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Commit | Line | Data |
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1da177e4 LT |
1 | /* |
2 | * fs/nfs/nfs4proc.c | |
3 | * | |
4 | * Client-side procedure declarations for NFSv4. | |
5 | * | |
6 | * Copyright (c) 2002 The Regents of the University of Michigan. | |
7 | * All rights reserved. | |
8 | * | |
9 | * Kendrick Smith <kmsmith@umich.edu> | |
10 | * Andy Adamson <andros@umich.edu> | |
11 | * | |
12 | * Redistribution and use in source and binary forms, with or without | |
13 | * modification, are permitted provided that the following conditions | |
14 | * are met: | |
15 | * | |
16 | * 1. Redistributions of source code must retain the above copyright | |
17 | * notice, this list of conditions and the following disclaimer. | |
18 | * 2. Redistributions in binary form must reproduce the above copyright | |
19 | * notice, this list of conditions and the following disclaimer in the | |
20 | * documentation and/or other materials provided with the distribution. | |
21 | * 3. Neither the name of the University nor the names of its | |
22 | * contributors may be used to endorse or promote products derived | |
23 | * from this software without specific prior written permission. | |
24 | * | |
25 | * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED | |
26 | * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF | |
27 | * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE | |
28 | * DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE | |
29 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR | |
30 | * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF | |
31 | * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR | |
32 | * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF | |
33 | * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING | |
34 | * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS | |
35 | * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |
36 | */ | |
37 | ||
38 | #include <linux/mm.h> | |
1da177e4 LT |
39 | #include <linux/delay.h> |
40 | #include <linux/errno.h> | |
41 | #include <linux/string.h> | |
652f89f6 TM |
42 | #include <linux/ratelimit.h> |
43 | #include <linux/printk.h> | |
5a0e3ad6 | 44 | #include <linux/slab.h> |
1da177e4 LT |
45 | #include <linux/sunrpc/clnt.h> |
46 | #include <linux/nfs.h> | |
47 | #include <linux/nfs4.h> | |
48 | #include <linux/nfs_fs.h> | |
49 | #include <linux/nfs_page.h> | |
9b7160c5 | 50 | #include <linux/nfs_mount.h> |
1da177e4 | 51 | #include <linux/namei.h> |
02a913a7 | 52 | #include <linux/mount.h> |
99fe60d0 | 53 | #include <linux/module.h> |
64c2ce8b | 54 | #include <linux/xattr.h> |
c7a360b0 | 55 | #include <linux/utsname.h> |
d310310c | 56 | #include <linux/freezer.h> |
1eb5d98f | 57 | #include <linux/iversion.h> |
1da177e4 | 58 | |
4ce79717 | 59 | #include "nfs4_fs.h" |
1da177e4 | 60 | #include "delegation.h" |
101070ca | 61 | #include "internal.h" |
006ea73e | 62 | #include "iostat.h" |
fc931582 | 63 | #include "callback.h" |
b1f69b75 | 64 | #include "pnfs.h" |
f092075d | 65 | #include "netns.h" |
39d43d16 | 66 | #include "sysfs.h" |
40c64c26 | 67 | #include "nfs4idmap.h" |
73e39aaa | 68 | #include "nfs4session.h" |
de242c0b | 69 | #include "fscache.h" |
012a211a | 70 | #include "nfs42.h" |
1da177e4 | 71 | |
c6d01c6f TM |
72 | #include "nfs4trace.h" |
73 | ||
1da177e4 LT |
74 | #define NFSDBG_FACILITY NFSDBG_PROC |
75 | ||
30846df0 TM |
76 | #define NFS4_BITMASK_SZ 3 |
77 | ||
2066fe89 | 78 | #define NFS4_POLL_RETRY_MIN (HZ/10) |
1da177e4 LT |
79 | #define NFS4_POLL_RETRY_MAX (15*HZ) |
80 | ||
a1d1c4f1 TM |
81 | /* file attributes which can be mapped to nfs attributes */ |
82 | #define NFS4_VALID_ATTRS (ATTR_MODE \ | |
83 | | ATTR_UID \ | |
84 | | ATTR_GID \ | |
85 | | ATTR_SIZE \ | |
86 | | ATTR_ATIME \ | |
87 | | ATTR_MTIME \ | |
88 | | ATTR_CTIME \ | |
89 | | ATTR_ATIME_SET \ | |
90 | | ATTR_MTIME_SET) | |
91 | ||
cdd4e68b | 92 | struct nfs4_opendata; |
b257957e | 93 | static int _nfs4_recover_proc_open(struct nfs4_opendata *data); |
1da177e4 | 94 | static int nfs4_do_fsinfo(struct nfs_server *, struct nfs_fh *, struct nfs_fsinfo *); |
81934ddb | 95 | static void nfs_fixup_referral_attributes(struct nfs_fattr *fattr); |
a841b54d | 96 | static int _nfs4_proc_getattr(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fattr *fattr, struct nfs4_label *label, struct inode *inode); |
a52458b4 | 97 | static int nfs4_do_setattr(struct inode *inode, const struct cred *cred, |
0ab64e0e | 98 | struct nfs_fattr *fattr, struct iattr *sattr, |
29b59f94 | 99 | struct nfs_open_context *ctx, struct nfs4_label *ilabel, |
1775fd3e | 100 | struct nfs4_label *olabel); |
f062eb6c | 101 | #ifdef CONFIG_NFS_V4_1 |
3be0f80b | 102 | static struct rpc_task *_nfs41_proc_sequence(struct nfs_client *clp, |
a52458b4 | 103 | const struct cred *cred, |
3be0f80b TM |
104 | struct nfs4_slot *slot, |
105 | bool is_privileged); | |
ab7cb0df | 106 | static int nfs41_test_stateid(struct nfs_server *, nfs4_stateid *, |
a52458b4 | 107 | const struct cred *); |
f0b0bf88 | 108 | static int nfs41_free_stateid(struct nfs_server *, const nfs4_stateid *, |
a52458b4 | 109 | const struct cred *, bool); |
f062eb6c | 110 | #endif |
332d1a03 TM |
111 | static void nfs4_bitmask_set(__u32 bitmask[NFS4_BITMASK_SZ], |
112 | const __u32 *src, struct inode *inode, | |
113 | struct nfs_server *server, | |
114 | struct nfs4_label *label); | |
aa9c2669 DQ |
115 | |
116 | #ifdef CONFIG_NFS_V4_SECURITY_LABEL | |
117 | static inline struct nfs4_label * | |
118 | nfs4_label_init_security(struct inode *dir, struct dentry *dentry, | |
119 | struct iattr *sattr, struct nfs4_label *label) | |
120 | { | |
121 | int err; | |
122 | ||
123 | if (label == NULL) | |
124 | return NULL; | |
125 | ||
126 | if (nfs_server_capable(dir, NFS_CAP_SECURITY_LABEL) == 0) | |
127 | return NULL; | |
128 | ||
aa9c2669 DQ |
129 | err = security_dentry_init_security(dentry, sattr->ia_mode, |
130 | &dentry->d_name, (void **)&label->label, &label->len); | |
131 | if (err == 0) | |
132 | return label; | |
133 | ||
134 | return NULL; | |
135 | } | |
136 | static inline void | |
137 | nfs4_label_release_security(struct nfs4_label *label) | |
138 | { | |
b1393bc0 CS |
139 | struct lsmcontext scaff; /* scaffolding */ |
140 | ||
141 | if (label) { | |
142 | lsmcontext_init(&scaff, label->label, label->len, 0); | |
143 | security_release_secctx(&scaff); | |
144 | } | |
aa9c2669 DQ |
145 | } |
146 | static inline u32 *nfs4_bitmask(struct nfs_server *server, struct nfs4_label *label) | |
147 | { | |
148 | if (label) | |
149 | return server->attr_bitmask; | |
150 | ||
151 | return server->attr_bitmask_nl; | |
152 | } | |
153 | #else | |
154 | static inline struct nfs4_label * | |
155 | nfs4_label_init_security(struct inode *dir, struct dentry *dentry, | |
156 | struct iattr *sattr, struct nfs4_label *l) | |
157 | { return NULL; } | |
158 | static inline void | |
159 | nfs4_label_release_security(struct nfs4_label *label) | |
160 | { return; } | |
161 | static inline u32 * | |
162 | nfs4_bitmask(struct nfs_server *server, struct nfs4_label *label) | |
163 | { return server->attr_bitmask; } | |
164 | #endif | |
165 | ||
1da177e4 | 166 | /* Prevent leaks of NFSv4 errors into userland */ |
46f72f57 | 167 | static int nfs4_map_errors(int err) |
1da177e4 | 168 | { |
52567b03 TM |
169 | if (err >= -1000) |
170 | return err; | |
171 | switch (err) { | |
172 | case -NFS4ERR_RESOURCE: | |
30005121 WAA |
173 | case -NFS4ERR_LAYOUTTRYLATER: |
174 | case -NFS4ERR_RECALLCONFLICT: | |
52567b03 | 175 | return -EREMOTEIO; |
7ebb9315 | 176 | case -NFS4ERR_WRONGSEC: |
8897538e | 177 | case -NFS4ERR_WRONG_CRED: |
7ebb9315 | 178 | return -EPERM; |
3ddeb7c5 TM |
179 | case -NFS4ERR_BADOWNER: |
180 | case -NFS4ERR_BADNAME: | |
181 | return -EINVAL; | |
fb13bfa7 TM |
182 | case -NFS4ERR_SHARE_DENIED: |
183 | return -EACCES; | |
f25efd85 SD |
184 | case -NFS4ERR_MINOR_VERS_MISMATCH: |
185 | return -EPROTONOSUPPORT; | |
6e3cf241 TM |
186 | case -NFS4ERR_FILE_OPEN: |
187 | return -EBUSY; | |
9fff59ed TM |
188 | case -NFS4ERR_NOT_SAME: |
189 | return -ENOTSYNC; | |
52567b03 | 190 | default: |
1da177e4 | 191 | dprintk("%s could not handle NFSv4 error %d\n", |
3110ff80 | 192 | __func__, -err); |
52567b03 | 193 | break; |
1da177e4 | 194 | } |
52567b03 | 195 | return -EIO; |
1da177e4 LT |
196 | } |
197 | ||
198 | /* | |
199 | * This is our standard bitmap for GETATTR requests. | |
200 | */ | |
1549210f | 201 | const u32 nfs4_fattr_bitmap[3] = { |
1da177e4 LT |
202 | FATTR4_WORD0_TYPE |
203 | | FATTR4_WORD0_CHANGE | |
204 | | FATTR4_WORD0_SIZE | |
205 | | FATTR4_WORD0_FSID | |
206 | | FATTR4_WORD0_FILEID, | |
207 | FATTR4_WORD1_MODE | |
208 | | FATTR4_WORD1_NUMLINKS | |
209 | | FATTR4_WORD1_OWNER | |
210 | | FATTR4_WORD1_OWNER_GROUP | |
211 | | FATTR4_WORD1_RAWDEV | |
212 | | FATTR4_WORD1_SPACE_USED | |
213 | | FATTR4_WORD1_TIME_ACCESS | |
214 | | FATTR4_WORD1_TIME_METADATA | |
ea96d1ec AS |
215 | | FATTR4_WORD1_TIME_MODIFY |
216 | | FATTR4_WORD1_MOUNTED_ON_FILEID, | |
aa9c2669 DQ |
217 | #ifdef CONFIG_NFS_V4_SECURITY_LABEL |
218 | FATTR4_WORD2_SECURITY_LABEL | |
219 | #endif | |
1da177e4 LT |
220 | }; |
221 | ||
1549210f TM |
222 | static const u32 nfs4_pnfs_open_bitmap[3] = { |
223 | FATTR4_WORD0_TYPE | |
224 | | FATTR4_WORD0_CHANGE | |
225 | | FATTR4_WORD0_SIZE | |
226 | | FATTR4_WORD0_FSID | |
227 | | FATTR4_WORD0_FILEID, | |
228 | FATTR4_WORD1_MODE | |
229 | | FATTR4_WORD1_NUMLINKS | |
230 | | FATTR4_WORD1_OWNER | |
231 | | FATTR4_WORD1_OWNER_GROUP | |
232 | | FATTR4_WORD1_RAWDEV | |
233 | | FATTR4_WORD1_SPACE_USED | |
234 | | FATTR4_WORD1_TIME_ACCESS | |
235 | | FATTR4_WORD1_TIME_METADATA | |
236 | | FATTR4_WORD1_TIME_MODIFY, | |
237 | FATTR4_WORD2_MDSTHRESHOLD | |
95864c91 TM |
238 | #ifdef CONFIG_NFS_V4_SECURITY_LABEL |
239 | | FATTR4_WORD2_SECURITY_LABEL | |
240 | #endif | |
1549210f TM |
241 | }; |
242 | ||
e23008ec AA |
243 | static const u32 nfs4_open_noattr_bitmap[3] = { |
244 | FATTR4_WORD0_TYPE | |
e23008ec AA |
245 | | FATTR4_WORD0_FILEID, |
246 | }; | |
247 | ||
a09df2ca | 248 | const u32 nfs4_statfs_bitmap[3] = { |
1da177e4 LT |
249 | FATTR4_WORD0_FILES_AVAIL |
250 | | FATTR4_WORD0_FILES_FREE | |
251 | | FATTR4_WORD0_FILES_TOTAL, | |
252 | FATTR4_WORD1_SPACE_AVAIL | |
253 | | FATTR4_WORD1_SPACE_FREE | |
254 | | FATTR4_WORD1_SPACE_TOTAL | |
255 | }; | |
256 | ||
a09df2ca | 257 | const u32 nfs4_pathconf_bitmap[3] = { |
1da177e4 LT |
258 | FATTR4_WORD0_MAXLINK |
259 | | FATTR4_WORD0_MAXNAME, | |
260 | 0 | |
261 | }; | |
262 | ||
dae100c2 | 263 | const u32 nfs4_fsinfo_bitmap[3] = { FATTR4_WORD0_MAXFILESIZE |
1da177e4 LT |
264 | | FATTR4_WORD0_MAXREAD |
265 | | FATTR4_WORD0_MAXWRITE | |
266 | | FATTR4_WORD0_LEASE_TIME, | |
55b6e774 | 267 | FATTR4_WORD1_TIME_DELTA |
dae100c2 FI |
268 | | FATTR4_WORD1_FS_LAYOUT_TYPES, |
269 | FATTR4_WORD2_LAYOUT_BLKSIZE | |
2a92ee92 | 270 | | FATTR4_WORD2_CLONE_BLKSIZE |
7f08a335 | 271 | | FATTR4_WORD2_CHANGE_ATTR_TYPE |
b78ef845 | 272 | | FATTR4_WORD2_XATTR_SUPPORT |
1da177e4 LT |
273 | }; |
274 | ||
a09df2ca | 275 | const u32 nfs4_fs_locations_bitmap[3] = { |
c05cefcc | 276 | FATTR4_WORD0_CHANGE |
830b8e33 MN |
277 | | FATTR4_WORD0_SIZE |
278 | | FATTR4_WORD0_FSID | |
279 | | FATTR4_WORD0_FILEID | |
280 | | FATTR4_WORD0_FS_LOCATIONS, | |
c05cefcc | 281 | FATTR4_WORD1_OWNER |
830b8e33 MN |
282 | | FATTR4_WORD1_OWNER_GROUP |
283 | | FATTR4_WORD1_RAWDEV | |
284 | | FATTR4_WORD1_SPACE_USED | |
285 | | FATTR4_WORD1_TIME_ACCESS | |
286 | | FATTR4_WORD1_TIME_METADATA | |
287 | | FATTR4_WORD1_TIME_MODIFY | |
a09df2ca | 288 | | FATTR4_WORD1_MOUNTED_ON_FILEID, |
830b8e33 MN |
289 | }; |
290 | ||
30846df0 | 291 | static void nfs4_bitmap_copy_adjust(__u32 *dst, const __u32 *src, |
a71029b8 | 292 | struct inode *inode, unsigned long flags) |
30846df0 TM |
293 | { |
294 | unsigned long cache_validity; | |
295 | ||
296 | memcpy(dst, src, NFS4_BITMASK_SZ*sizeof(*dst)); | |
297 | if (!inode || !nfs4_have_delegation(inode, FMODE_READ)) | |
298 | return; | |
299 | ||
a71029b8 | 300 | cache_validity = READ_ONCE(NFS_I(inode)->cache_validity) | flags; |
30846df0 | 301 | |
a71029b8 TM |
302 | /* Remove the attributes over which we have full control */ |
303 | dst[1] &= ~FATTR4_WORD1_RAWDEV; | |
30846df0 TM |
304 | if (!(cache_validity & NFS_INO_INVALID_SIZE)) |
305 | dst[0] &= ~FATTR4_WORD0_SIZE; | |
306 | ||
307 | if (!(cache_validity & NFS_INO_INVALID_CHANGE)) | |
308 | dst[0] &= ~FATTR4_WORD0_CHANGE; | |
30846df0 | 309 | |
720869eb TM |
310 | if (!(cache_validity & NFS_INO_INVALID_MODE)) |
311 | dst[1] &= ~FATTR4_WORD1_MODE; | |
a71029b8 | 312 | if (!(cache_validity & NFS_INO_INVALID_OTHER)) |
720869eb | 313 | dst[1] &= ~(FATTR4_WORD1_OWNER | FATTR4_WORD1_OWNER_GROUP); |
30846df0 TM |
314 | } |
315 | ||
bc4785cd | 316 | static void nfs4_setup_readdir(u64 cookie, __be32 *verifier, struct dentry *dentry, |
1da177e4 LT |
317 | struct nfs4_readdir_arg *readdir) |
318 | { | |
18fe6a23 | 319 | unsigned int attrs = FATTR4_WORD0_FILEID | FATTR4_WORD0_TYPE; |
0dbb4c67 | 320 | __be32 *start, *p; |
1da177e4 | 321 | |
1da177e4 | 322 | if (cookie > 2) { |
b7ef1956 | 323 | readdir->cookie = cookie; |
1da177e4 LT |
324 | memcpy(&readdir->verifier, verifier, sizeof(readdir->verifier)); |
325 | return; | |
326 | } | |
327 | ||
328 | readdir->cookie = 0; | |
329 | memset(&readdir->verifier, 0, sizeof(readdir->verifier)); | |
330 | if (cookie == 2) | |
331 | return; | |
332 | ||
333 | /* | |
334 | * NFSv4 servers do not return entries for '.' and '..' | |
335 | * Therefore, we fake these entries here. We let '.' | |
336 | * have cookie 0 and '..' have cookie 1. Note that | |
337 | * when talking to the server, we always send cookie 0 | |
338 | * instead of 1 or 2. | |
339 | */ | |
2b86ce2d | 340 | start = p = kmap_atomic(*readdir->pages); |
1da177e4 LT |
341 | |
342 | if (cookie == 0) { | |
343 | *p++ = xdr_one; /* next */ | |
344 | *p++ = xdr_zero; /* cookie, first word */ | |
345 | *p++ = xdr_one; /* cookie, second word */ | |
346 | *p++ = xdr_one; /* entry len */ | |
347 | memcpy(p, ".\0\0\0", 4); /* entry */ | |
348 | p++; | |
349 | *p++ = xdr_one; /* bitmap length */ | |
18fe6a23 AS |
350 | *p++ = htonl(attrs); /* bitmap */ |
351 | *p++ = htonl(12); /* attribute buffer length */ | |
352 | *p++ = htonl(NF4DIR); | |
2b0143b5 | 353 | p = xdr_encode_hyper(p, NFS_FILEID(d_inode(dentry))); |
1da177e4 LT |
354 | } |
355 | ||
356 | *p++ = xdr_one; /* next */ | |
357 | *p++ = xdr_zero; /* cookie, first word */ | |
358 | *p++ = xdr_two; /* cookie, second word */ | |
359 | *p++ = xdr_two; /* entry len */ | |
360 | memcpy(p, "..\0\0", 4); /* entry */ | |
361 | p++; | |
362 | *p++ = xdr_one; /* bitmap length */ | |
18fe6a23 AS |
363 | *p++ = htonl(attrs); /* bitmap */ |
364 | *p++ = htonl(12); /* attribute buffer length */ | |
365 | *p++ = htonl(NF4DIR); | |
2b0143b5 | 366 | p = xdr_encode_hyper(p, NFS_FILEID(d_inode(dentry->d_parent))); |
1da177e4 LT |
367 | |
368 | readdir->pgbase = (char *)p - (char *)start; | |
369 | readdir->count -= readdir->pgbase; | |
2b86ce2d | 370 | kunmap_atomic(start); |
1da177e4 LT |
371 | } |
372 | ||
26d36301 TM |
373 | static void nfs4_test_and_free_stateid(struct nfs_server *server, |
374 | nfs4_stateid *stateid, | |
a52458b4 | 375 | const struct cred *cred) |
26d36301 TM |
376 | { |
377 | const struct nfs4_minor_version_ops *ops = server->nfs_client->cl_mvops; | |
378 | ||
379 | ops->test_and_free_expired(server, stateid, cred); | |
380 | } | |
381 | ||
382 | static void __nfs4_free_revoked_stateid(struct nfs_server *server, | |
383 | nfs4_stateid *stateid, | |
a52458b4 | 384 | const struct cred *cred) |
26d36301 TM |
385 | { |
386 | stateid->type = NFS4_REVOKED_STATEID_TYPE; | |
387 | nfs4_test_and_free_stateid(server, stateid, cred); | |
388 | } | |
389 | ||
390 | static void nfs4_free_revoked_stateid(struct nfs_server *server, | |
391 | const nfs4_stateid *stateid, | |
a52458b4 | 392 | const struct cred *cred) |
26d36301 TM |
393 | { |
394 | nfs4_stateid tmp; | |
395 | ||
396 | nfs4_stateid_copy(&tmp, stateid); | |
397 | __nfs4_free_revoked_stateid(server, &tmp, cred); | |
398 | } | |
399 | ||
8478eaa1 N |
400 | static long nfs4_update_delay(long *timeout) |
401 | { | |
402 | long ret; | |
403 | if (!timeout) | |
404 | return NFS4_POLL_RETRY_MAX; | |
405 | if (*timeout <= 0) | |
406 | *timeout = NFS4_POLL_RETRY_MIN; | |
407 | if (*timeout > NFS4_POLL_RETRY_MAX) | |
408 | *timeout = NFS4_POLL_RETRY_MAX; | |
409 | ret = *timeout; | |
410 | *timeout <<= 1; | |
411 | return ret; | |
412 | } | |
413 | ||
0688e64b | 414 | static int nfs4_delay_killable(long *timeout) |
65de872e | 415 | { |
65de872e TM |
416 | might_sleep(); |
417 | ||
8478eaa1 N |
418 | freezable_schedule_timeout_killable_unsafe( |
419 | nfs4_update_delay(timeout)); | |
0688e64b TM |
420 | if (!__fatal_signal_pending(current)) |
421 | return 0; | |
422 | return -EINTR; | |
423 | } | |
424 | ||
425 | static int nfs4_delay_interruptible(long *timeout) | |
426 | { | |
427 | might_sleep(); | |
428 | ||
59679d99 | 429 | freezable_schedule_timeout_interruptible_unsafe(nfs4_update_delay(timeout)); |
0688e64b TM |
430 | if (!signal_pending(current)) |
431 | return 0; | |
432 | return __fatal_signal_pending(current) ? -EINTR :-ERESTARTSYS; | |
433 | } | |
434 | ||
435 | static int nfs4_delay(long *timeout, bool interruptible) | |
436 | { | |
437 | if (interruptible) | |
438 | return nfs4_delay_interruptible(timeout); | |
439 | return nfs4_delay_killable(timeout); | |
65de872e TM |
440 | } |
441 | ||
50c80007 TM |
442 | static const nfs4_stateid * |
443 | nfs4_recoverable_stateid(const nfs4_stateid *stateid) | |
444 | { | |
445 | if (!stateid) | |
446 | return NULL; | |
447 | switch (stateid->type) { | |
448 | case NFS4_OPEN_STATEID_TYPE: | |
449 | case NFS4_LOCK_STATEID_TYPE: | |
450 | case NFS4_DELEGATION_STATEID_TYPE: | |
451 | return stateid; | |
452 | default: | |
453 | break; | |
454 | } | |
455 | return NULL; | |
456 | } | |
457 | ||
65de872e TM |
458 | /* This is the error handling routine for processes that are allowed |
459 | * to sleep. | |
460 | */ | |
b3c2aa07 TM |
461 | static int nfs4_do_handle_exception(struct nfs_server *server, |
462 | int errorcode, struct nfs4_exception *exception) | |
65de872e TM |
463 | { |
464 | struct nfs_client *clp = server->nfs_client; | |
9e33bed5 | 465 | struct nfs4_state *state = exception->state; |
50c80007 | 466 | const nfs4_stateid *stateid; |
3114ea7a | 467 | struct inode *inode = exception->inode; |
65de872e TM |
468 | int ret = errorcode; |
469 | ||
b3c2aa07 TM |
470 | exception->delay = 0; |
471 | exception->recovering = 0; | |
65de872e | 472 | exception->retry = 0; |
272289a3 | 473 | |
50c80007 | 474 | stateid = nfs4_recoverable_stateid(exception->stateid); |
272289a3 | 475 | if (stateid == NULL && state != NULL) |
50c80007 | 476 | stateid = nfs4_recoverable_stateid(&state->stateid); |
272289a3 | 477 | |
65de872e TM |
478 | switch(errorcode) { |
479 | case 0: | |
480 | return 0; | |
cf61eb26 TM |
481 | case -NFS4ERR_BADHANDLE: |
482 | case -ESTALE: | |
483 | if (inode != NULL && S_ISREG(inode->i_mode)) | |
484 | pnfs_destroy_layout(NFS_I(inode)); | |
485 | break; | |
5ba12443 TM |
486 | case -NFS4ERR_DELEG_REVOKED: |
487 | case -NFS4ERR_ADMIN_REVOKED: | |
272289a3 | 488 | case -NFS4ERR_EXPIRED: |
5ba12443 | 489 | case -NFS4ERR_BAD_STATEID: |
fefa1a81 | 490 | case -NFS4ERR_PARTNER_NO_AUTH: |
272289a3 TM |
491 | if (inode != NULL && stateid != NULL) { |
492 | nfs_inode_find_state_and_recover(inode, | |
493 | stateid); | |
494 | goto wait_on_recovery; | |
495 | } | |
df561f66 | 496 | fallthrough; |
272289a3 | 497 | case -NFS4ERR_OPENMODE: |
8487c479 TM |
498 | if (inode) { |
499 | int err; | |
500 | ||
501 | err = nfs_async_inode_return_delegation(inode, | |
502 | stateid); | |
503 | if (err == 0) | |
504 | goto wait_on_recovery; | |
505 | if (stateid != NULL && stateid->type == NFS4_DELEGATION_STATEID_TYPE) { | |
506 | exception->retry = 1; | |
507 | break; | |
508 | } | |
509 | } | |
3114ea7a TM |
510 | if (state == NULL) |
511 | break; | |
5d422301 TM |
512 | ret = nfs4_schedule_stateid_recovery(server, state); |
513 | if (ret < 0) | |
514 | break; | |
3114ea7a | 515 | goto wait_on_recovery; |
65de872e | 516 | case -NFS4ERR_STALE_STATEID: |
a2c0b9e2 | 517 | case -NFS4ERR_STALE_CLIENTID: |
0400a6b0 TM |
518 | nfs4_schedule_lease_recovery(clp); |
519 | goto wait_on_recovery; | |
519ae255 CL |
520 | case -NFS4ERR_MOVED: |
521 | ret = nfs4_schedule_migration_recovery(server); | |
522 | if (ret < 0) | |
523 | break; | |
524 | goto wait_on_recovery; | |
8ef2f8d4 CL |
525 | case -NFS4ERR_LEASE_MOVED: |
526 | nfs4_schedule_lease_moved_recovery(clp); | |
527 | goto wait_on_recovery; | |
03391693 | 528 | #if defined(CONFIG_NFS_V4_1) |
4745e315 AA |
529 | case -NFS4ERR_BADSESSION: |
530 | case -NFS4ERR_BADSLOT: | |
531 | case -NFS4ERR_BAD_HIGH_SLOT: | |
532 | case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION: | |
533 | case -NFS4ERR_DEADSESSION: | |
534 | case -NFS4ERR_SEQ_FALSE_RETRY: | |
535 | case -NFS4ERR_SEQ_MISORDERED: | |
5c441544 | 536 | /* Handled in nfs41_sequence_process() */ |
399f11c3 | 537 | goto wait_on_recovery; |
03391693 | 538 | #endif /* defined(CONFIG_NFS_V4_1) */ |
65de872e | 539 | case -NFS4ERR_FILE_OPEN: |
44ed3556 N |
540 | if (exception->timeout > HZ) { |
541 | /* We have retried a decent amount, time to | |
542 | * fail | |
543 | */ | |
544 | ret = -EBUSY; | |
545 | break; | |
546 | } | |
df561f66 | 547 | fallthrough; |
65de872e | 548 | case -NFS4ERR_DELAY: |
2598ed34 | 549 | nfs_inc_server_stats(server, NFSIOS_DELAY); |
df561f66 | 550 | fallthrough; |
2598ed34 | 551 | case -NFS4ERR_GRACE: |
e85d7ee4 | 552 | case -NFS4ERR_LAYOUTTRYLATER: |
183d9e7b | 553 | case -NFS4ERR_RECALLCONFLICT: |
b3c2aa07 TM |
554 | exception->delay = 1; |
555 | return 0; | |
556 | ||
a8a4ae3a | 557 | case -NFS4ERR_RETRY_UNCACHED_REP: |
65de872e TM |
558 | case -NFS4ERR_OLD_STATEID: |
559 | exception->retry = 1; | |
b064eca2 TM |
560 | break; |
561 | case -NFS4ERR_BADOWNER: | |
562 | /* The following works around a Linux server bug! */ | |
563 | case -NFS4ERR_BADNAME: | |
564 | if (server->caps & NFS_CAP_UIDGID_NOMAP) { | |
565 | server->caps &= ~NFS_CAP_UIDGID_NOMAP; | |
566 | exception->retry = 1; | |
567 | printk(KERN_WARNING "NFS: v4 server %s " | |
568 | "does not accept raw " | |
569 | "uid/gids. " | |
570 | "Reenabling the idmapper.\n", | |
571 | server->nfs_client->cl_hostname); | |
572 | } | |
65de872e TM |
573 | } |
574 | /* We failed to handle the error */ | |
575 | return nfs4_map_errors(ret); | |
0400a6b0 | 576 | wait_on_recovery: |
b3c2aa07 TM |
577 | exception->recovering = 1; |
578 | return 0; | |
579 | } | |
580 | ||
581 | /* This is the error handling routine for processes that are allowed | |
582 | * to sleep. | |
583 | */ | |
584 | int nfs4_handle_exception(struct nfs_server *server, int errorcode, struct nfs4_exception *exception) | |
585 | { | |
586 | struct nfs_client *clp = server->nfs_client; | |
587 | int ret; | |
588 | ||
589 | ret = nfs4_do_handle_exception(server, errorcode, exception); | |
590 | if (exception->delay) { | |
0688e64b TM |
591 | ret = nfs4_delay(&exception->timeout, |
592 | exception->interruptible); | |
b3c2aa07 TM |
593 | goto out_retry; |
594 | } | |
595 | if (exception->recovering) { | |
dfe1fe75 TM |
596 | if (exception->task_is_privileged) |
597 | return -EDEADLOCK; | |
b3c2aa07 TM |
598 | ret = nfs4_wait_clnt_recover(clp); |
599 | if (test_bit(NFS_MIG_FAILED, &server->mig_status)) | |
600 | return -EIO; | |
601 | goto out_retry; | |
602 | } | |
603 | return ret; | |
604 | out_retry: | |
a2c0b9e2 TM |
605 | if (ret == 0) |
606 | exception->retry = 1; | |
607 | return ret; | |
65de872e TM |
608 | } |
609 | ||
037fc980 TM |
610 | static int |
611 | nfs4_async_handle_exception(struct rpc_task *task, struct nfs_server *server, | |
612 | int errorcode, struct nfs4_exception *exception) | |
613 | { | |
614 | struct nfs_client *clp = server->nfs_client; | |
615 | int ret; | |
616 | ||
617 | ret = nfs4_do_handle_exception(server, errorcode, exception); | |
618 | if (exception->delay) { | |
619 | rpc_delay(task, nfs4_update_delay(&exception->timeout)); | |
620 | goto out_retry; | |
621 | } | |
622 | if (exception->recovering) { | |
dfe1fe75 TM |
623 | if (exception->task_is_privileged) |
624 | return -EDEADLOCK; | |
037fc980 TM |
625 | rpc_sleep_on(&clp->cl_rpcwaitq, task, NULL); |
626 | if (test_bit(NFS4CLNT_MANAGER_RUNNING, &clp->cl_state) == 0) | |
627 | rpc_wake_up_queued_task(&clp->cl_rpcwaitq, task); | |
628 | goto out_retry; | |
629 | } | |
519ae255 | 630 | if (test_bit(NFS_MIG_FAILED, &server->mig_status)) |
037fc980 TM |
631 | ret = -EIO; |
632 | return ret; | |
633 | out_retry: | |
0f90be13 | 634 | if (ret == 0) { |
a2c0b9e2 | 635 | exception->retry = 1; |
0f90be13 BB |
636 | /* |
637 | * For NFS4ERR_MOVED, the client transport will need to | |
638 | * be recomputed after migration recovery has completed. | |
639 | */ | |
640 | if (errorcode == -NFS4ERR_MOVED) | |
641 | rpc_task_release_transport(task); | |
642 | } | |
a2c0b9e2 | 643 | return ret; |
65de872e TM |
644 | } |
645 | ||
0f913a57 | 646 | int |
037fc980 TM |
647 | nfs4_async_handle_error(struct rpc_task *task, struct nfs_server *server, |
648 | struct nfs4_state *state, long *timeout) | |
649 | { | |
650 | struct nfs4_exception exception = { | |
651 | .state = state, | |
652 | }; | |
653 | ||
654 | if (task->tk_status >= 0) | |
655 | return 0; | |
656 | if (timeout) | |
657 | exception.timeout = *timeout; | |
658 | task->tk_status = nfs4_async_handle_exception(task, server, | |
659 | task->tk_status, | |
660 | &exception); | |
661 | if (exception.delay && timeout) | |
662 | *timeout = exception.timeout; | |
663 | if (exception.retry) | |
664 | return -EAGAIN; | |
665 | return 0; | |
666 | } | |
667 | ||
a5250def WAA |
668 | /* |
669 | * Return 'true' if 'clp' is using an rpc_client that is integrity protected | |
670 | * or 'false' otherwise. | |
671 | */ | |
672 | static bool _nfs4_is_integrity_protected(struct nfs_client *clp) | |
673 | { | |
674 | rpc_authflavor_t flavor = clp->cl_rpcclient->cl_auth->au_flavor; | |
eeea5361 | 675 | return (flavor == RPC_AUTH_GSS_KRB5I) || (flavor == RPC_AUTH_GSS_KRB5P); |
a5250def | 676 | } |
65de872e | 677 | |
452e9352 | 678 | static void do_renew_lease(struct nfs_client *clp, unsigned long timestamp) |
1da177e4 | 679 | { |
1da177e4 LT |
680 | spin_lock(&clp->cl_lock); |
681 | if (time_before(clp->cl_last_renewal,timestamp)) | |
682 | clp->cl_last_renewal = timestamp; | |
683 | spin_unlock(&clp->cl_lock); | |
684 | } | |
685 | ||
452e9352 TM |
686 | static void renew_lease(const struct nfs_server *server, unsigned long timestamp) |
687 | { | |
be824167 TM |
688 | struct nfs_client *clp = server->nfs_client; |
689 | ||
690 | if (!nfs4_has_session(clp)) | |
691 | do_renew_lease(clp, timestamp); | |
452e9352 TM |
692 | } |
693 | ||
2a3eb2b9 CL |
694 | struct nfs4_call_sync_data { |
695 | const struct nfs_server *seq_server; | |
696 | struct nfs4_sequence_args *seq_args; | |
697 | struct nfs4_sequence_res *seq_res; | |
698 | }; | |
699 | ||
be3a5d23 | 700 | void nfs4_init_sequence(struct nfs4_sequence_args *args, |
fba83f34 AS |
701 | struct nfs4_sequence_res *res, int cache_reply, |
702 | int privileged) | |
a9c92d6b CL |
703 | { |
704 | args->sa_slot = NULL; | |
705 | args->sa_cache_this = cache_reply; | |
fba83f34 | 706 | args->sa_privileged = privileged; |
a9c92d6b CL |
707 | |
708 | res->sr_slot = NULL; | |
709 | } | |
710 | ||
2e80dbe7 | 711 | static void nfs40_sequence_free_slot(struct nfs4_sequence_res *res) |
3bd2384a CL |
712 | { |
713 | struct nfs4_slot *slot = res->sr_slot; | |
714 | struct nfs4_slot_table *tbl; | |
715 | ||
3bd2384a CL |
716 | tbl = slot->table; |
717 | spin_lock(&tbl->slot_tbl_lock); | |
718 | if (!nfs41_wake_and_assign_slot(tbl, slot)) | |
719 | nfs4_free_slot(tbl, slot); | |
720 | spin_unlock(&tbl->slot_tbl_lock); | |
721 | ||
722 | res->sr_slot = NULL; | |
2e80dbe7 TM |
723 | } |
724 | ||
725 | static int nfs40_sequence_done(struct rpc_task *task, | |
726 | struct nfs4_sequence_res *res) | |
727 | { | |
728 | if (res->sr_slot != NULL) | |
729 | nfs40_sequence_free_slot(res); | |
3bd2384a CL |
730 | return 1; |
731 | } | |
732 | ||
cccef3b9 AA |
733 | #if defined(CONFIG_NFS_V4_1) |
734 | ||
3be0f80b | 735 | static void nfs41_release_slot(struct nfs4_slot *slot) |
13615871 | 736 | { |
e3725ec0 | 737 | struct nfs4_session *session; |
13615871 | 738 | struct nfs4_slot_table *tbl; |
c10e4498 | 739 | bool send_new_highest_used_slotid = false; |
13615871 | 740 | |
3be0f80b TM |
741 | if (!slot) |
742 | return; | |
a13ce7c6 | 743 | tbl = slot->table; |
e3725ec0 | 744 | session = tbl->session; |
ea028ac9 | 745 | |
07e8dcbd TM |
746 | /* Bump the slot sequence number */ |
747 | if (slot->seq_done) | |
748 | slot->seq_nr++; | |
749 | slot->seq_done = 0; | |
750 | ||
35dc1d74 | 751 | spin_lock(&tbl->slot_tbl_lock); |
c10e4498 TM |
752 | /* Be nice to the server: try to ensure that the last transmitted |
753 | * value for highest_user_slotid <= target_highest_slotid | |
754 | */ | |
755 | if (tbl->highest_used_slotid > tbl->target_highest_slotid) | |
756 | send_new_highest_used_slotid = true; | |
757 | ||
a13ce7c6 | 758 | if (nfs41_wake_and_assign_slot(tbl, slot)) { |
b75ad4cd TM |
759 | send_new_highest_used_slotid = false; |
760 | goto out_unlock; | |
761 | } | |
a13ce7c6 | 762 | nfs4_free_slot(tbl, slot); |
c10e4498 TM |
763 | |
764 | if (tbl->highest_used_slotid != NFS4_NO_SLOT) | |
765 | send_new_highest_used_slotid = false; | |
b75ad4cd | 766 | out_unlock: |
35dc1d74 | 767 | spin_unlock(&tbl->slot_tbl_lock); |
c10e4498 | 768 | if (send_new_highest_used_slotid) |
3f10a6af | 769 | nfs41_notify_server(session->clp); |
045d2a6d TM |
770 | if (waitqueue_active(&tbl->slot_waitq)) |
771 | wake_up_all(&tbl->slot_waitq); | |
13615871 AA |
772 | } |
773 | ||
3be0f80b TM |
774 | static void nfs41_sequence_free_slot(struct nfs4_sequence_res *res) |
775 | { | |
776 | nfs41_release_slot(res->sr_slot); | |
777 | res->sr_slot = NULL; | |
778 | } | |
779 | ||
3453d570 TM |
780 | static void nfs4_slot_sequence_record_sent(struct nfs4_slot *slot, |
781 | u32 seqnr) | |
782 | { | |
783 | if ((s32)(seqnr - slot->seq_nr_highest_sent) > 0) | |
784 | slot->seq_nr_highest_sent = seqnr; | |
785 | } | |
786 | static void nfs4_slot_sequence_acked(struct nfs4_slot *slot, | |
787 | u32 seqnr) | |
788 | { | |
789 | slot->seq_nr_highest_sent = seqnr; | |
790 | slot->seq_nr_last_acked = seqnr; | |
791 | } | |
792 | ||
913fadc5 AS |
793 | static void nfs4_probe_sequence(struct nfs_client *client, const struct cred *cred, |
794 | struct nfs4_slot *slot) | |
795 | { | |
796 | struct rpc_task *task = _nfs41_proc_sequence(client, cred, slot, true); | |
797 | if (!IS_ERR(task)) | |
798 | rpc_put_task_async(task); | |
799 | } | |
800 | ||
2e80dbe7 TM |
801 | static int nfs41_sequence_process(struct rpc_task *task, |
802 | struct nfs4_sequence_res *res) | |
b0df806c | 803 | { |
e3725ec0 | 804 | struct nfs4_session *session; |
a13ce7c6 | 805 | struct nfs4_slot *slot = res->sr_slot; |
14516c3a | 806 | struct nfs_client *clp; |
5c441544 | 807 | int status; |
85563073 | 808 | int ret = 1; |
b0df806c | 809 | |
a13ce7c6 TM |
810 | if (slot == NULL) |
811 | goto out_noaction; | |
468f8613 | 812 | /* don't increment the sequence number if the task wasn't sent */ |
c71c46f0 | 813 | if (!RPC_WAS_SENT(task) || slot->seq_done) |
b0df806c AA |
814 | goto out; |
815 | ||
e3725ec0 | 816 | session = slot->table->session; |
913fadc5 | 817 | clp = session->clp; |
933602e3 | 818 | |
2f92ae34 | 819 | trace_nfs4_sequence_done(session, res); |
5c441544 TM |
820 | |
821 | status = res->sr_status; | |
822 | if (task->tk_status == -NFS4ERR_DEADSESSION) | |
823 | status = -NFS4ERR_DEADSESSION; | |
824 | ||
691daf3b | 825 | /* Check the SEQUENCE operation status */ |
5c441544 | 826 | switch (status) { |
14516c3a | 827 | case 0: |
3453d570 TM |
828 | /* Mark this sequence number as having been acked */ |
829 | nfs4_slot_sequence_acked(slot, slot->seq_nr); | |
b0df806c | 830 | /* Update the slot's sequence and clientid lease timer */ |
07e8dcbd | 831 | slot->seq_done = 1; |
8e63b6a8 | 832 | do_renew_lease(clp, res->sr_timestamp); |
0629e370 | 833 | /* Check sequence flags */ |
0a014a44 TM |
834 | nfs41_handle_sequence_flag_errors(clp, res->sr_status_flags, |
835 | !!slot->privileged); | |
464ee9f9 | 836 | nfs41_update_target_slotid(slot->table, slot, res); |
14516c3a | 837 | break; |
ac20d163 TM |
838 | case 1: |
839 | /* | |
840 | * sr_status remains 1 if an RPC level error occurred. | |
841 | * The server may or may not have processed the sequence | |
842 | * operation.. | |
ac20d163 | 843 | */ |
3453d570 TM |
844 | nfs4_slot_sequence_record_sent(slot, slot->seq_nr); |
845 | slot->seq_done = 1; | |
ac20d163 | 846 | goto out; |
14516c3a TM |
847 | case -NFS4ERR_DELAY: |
848 | /* The server detected a resend of the RPC call and | |
849 | * returned NFS4ERR_DELAY as per Section 2.10.6.2 | |
850 | * of RFC5661. | |
851 | */ | |
df2fabff | 852 | dprintk("%s: slot=%u seq=%u: Operation in progress\n", |
dfb4f309 | 853 | __func__, |
df2fabff | 854 | slot->slot_nr, |
933602e3 | 855 | slot->seq_nr); |
3453d570 | 856 | nfs4_slot_sequence_acked(slot, slot->seq_nr); |
14516c3a | 857 | goto out_retry; |
f9312a54 TM |
858 | case -NFS4ERR_RETRY_UNCACHED_REP: |
859 | case -NFS4ERR_SEQ_FALSE_RETRY: | |
860 | /* | |
861 | * The server thinks we tried to replay a request. | |
862 | * Retry the call after bumping the sequence ID. | |
863 | */ | |
3453d570 | 864 | nfs4_slot_sequence_acked(slot, slot->seq_nr); |
f9312a54 | 865 | goto retry_new_seq; |
85563073 TM |
866 | case -NFS4ERR_BADSLOT: |
867 | /* | |
868 | * The slot id we used was probably retired. Try again | |
869 | * using a different slot id. | |
870 | */ | |
99589100 | 871 | if (slot->slot_nr < slot->table->target_highest_slotid) |
3be0f80b | 872 | goto session_recover; |
e8794440 TM |
873 | goto retry_nowait; |
874 | case -NFS4ERR_SEQ_MISORDERED: | |
3453d570 | 875 | nfs4_slot_sequence_record_sent(slot, slot->seq_nr); |
ac20d163 | 876 | /* |
3453d570 TM |
877 | * Were one or more calls using this slot interrupted? |
878 | * If the server never received the request, then our | |
913fadc5 AS |
879 | * transmitted slot sequence number may be too high. However, |
880 | * if the server did receive the request then it might | |
881 | * accidentally give us a reply with a mismatched operation. | |
882 | * We can sort this out by sending a lone sequence operation | |
883 | * to the server on the same slot. | |
e8794440 | 884 | */ |
3453d570 TM |
885 | if ((s32)(slot->seq_nr - slot->seq_nr_last_acked) > 1) { |
886 | slot->seq_nr--; | |
913fadc5 AS |
887 | if (task->tk_msg.rpc_proc != &nfs4_procedures[NFSPROC4_CLNT_SEQUENCE]) { |
888 | nfs4_probe_sequence(clp, task->tk_msg.rpc_cred, slot); | |
889 | res->sr_slot = NULL; | |
890 | } | |
8e63b6a8 TM |
891 | goto retry_nowait; |
892 | } | |
3453d570 TM |
893 | /* |
894 | * RFC5661: | |
895 | * A retry might be sent while the original request is | |
896 | * still in progress on the replier. The replier SHOULD | |
897 | * deal with the issue by returning NFS4ERR_DELAY as the | |
898 | * reply to SEQUENCE or CB_SEQUENCE operation, but | |
899 | * implementations MAY return NFS4ERR_SEQ_MISORDERED. | |
900 | * | |
901 | * Restart the search after a delay. | |
902 | */ | |
903 | slot->seq_nr = slot->seq_nr_highest_sent; | |
904 | goto out_retry; | |
5c441544 TM |
905 | case -NFS4ERR_BADSESSION: |
906 | case -NFS4ERR_DEADSESSION: | |
907 | case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION: | |
908 | goto session_recover; | |
14516c3a TM |
909 | default: |
910 | /* Just update the slot sequence no. */ | |
07e8dcbd | 911 | slot->seq_done = 1; |
b0df806c AA |
912 | } |
913 | out: | |
914 | /* The session may be reset by one of the error handlers. */ | |
915 | dprintk("%s: Error %d free the slot \n", __func__, res->sr_status); | |
a13ce7c6 | 916 | out_noaction: |
85563073 | 917 | return ret; |
3be0f80b | 918 | session_recover: |
5c441544 TM |
919 | nfs4_schedule_session_recovery(session, status); |
920 | dprintk("%s ERROR: %d Reset session\n", __func__, status); | |
921 | nfs41_sequence_free_slot(res); | |
922 | goto out; | |
3be0f80b TM |
923 | retry_new_seq: |
924 | ++slot->seq_nr; | |
e8794440 TM |
925 | retry_nowait: |
926 | if (rpc_restart_call_prepare(task)) { | |
2e80dbe7 | 927 | nfs41_sequence_free_slot(res); |
e8794440 TM |
928 | task->tk_status = 0; |
929 | ret = 0; | |
930 | } | |
931 | goto out; | |
14516c3a | 932 | out_retry: |
d05dd4e9 | 933 | if (!rpc_restart_call(task)) |
14516c3a TM |
934 | goto out; |
935 | rpc_delay(task, NFS4_POLL_RETRY_MAX); | |
936 | return 0; | |
b0df806c | 937 | } |
2e80dbe7 TM |
938 | |
939 | int nfs41_sequence_done(struct rpc_task *task, struct nfs4_sequence_res *res) | |
940 | { | |
941 | if (!nfs41_sequence_process(task, res)) | |
942 | return 0; | |
943 | if (res->sr_slot != NULL) | |
944 | nfs41_sequence_free_slot(res); | |
945 | return 1; | |
946 | ||
947 | } | |
f9c96fcc | 948 | EXPORT_SYMBOL_GPL(nfs41_sequence_done); |
b0df806c | 949 | |
2e80dbe7 TM |
950 | static int nfs4_sequence_process(struct rpc_task *task, struct nfs4_sequence_res *res) |
951 | { | |
952 | if (res->sr_slot == NULL) | |
953 | return 1; | |
954 | if (res->sr_slot->table->session != NULL) | |
955 | return nfs41_sequence_process(task, res); | |
956 | return nfs40_sequence_done(task, res); | |
957 | } | |
958 | ||
959 | static void nfs4_sequence_free_slot(struct nfs4_sequence_res *res) | |
960 | { | |
961 | if (res->sr_slot != NULL) { | |
962 | if (res->sr_slot->table->session != NULL) | |
963 | nfs41_sequence_free_slot(res); | |
964 | else | |
965 | nfs40_sequence_free_slot(res); | |
966 | } | |
967 | } | |
968 | ||
2c4b131d | 969 | int nfs4_sequence_done(struct rpc_task *task, struct nfs4_sequence_res *res) |
df896455 | 970 | { |
e3725ec0 | 971 | if (res->sr_slot == NULL) |
14516c3a | 972 | return 1; |
3bd2384a CL |
973 | if (!res->sr_slot->table->session) |
974 | return nfs40_sequence_done(task, res); | |
14516c3a | 975 | return nfs41_sequence_done(task, res); |
df896455 | 976 | } |
2c4b131d | 977 | EXPORT_SYMBOL_GPL(nfs4_sequence_done); |
df896455 | 978 | |
ce5039c1 AA |
979 | static void nfs41_call_sync_prepare(struct rpc_task *task, void *calldata) |
980 | { | |
2a3eb2b9 | 981 | struct nfs4_call_sync_data *data = calldata; |
ce5039c1 | 982 | |
035168ab TM |
983 | dprintk("--> %s data->seq_server %p\n", __func__, data->seq_server); |
984 | ||
7981c8a6 AS |
985 | nfs4_setup_sequence(data->seq_server->nfs_client, |
986 | data->seq_args, data->seq_res, task); | |
ce5039c1 AA |
987 | } |
988 | ||
69ab40c4 AA |
989 | static void nfs41_call_sync_done(struct rpc_task *task, void *calldata) |
990 | { | |
2a3eb2b9 | 991 | struct nfs4_call_sync_data *data = calldata; |
69ab40c4 | 992 | |
14516c3a | 993 | nfs41_sequence_done(task, data->seq_res); |
69ab40c4 AA |
994 | } |
995 | ||
17280175 | 996 | static const struct rpc_call_ops nfs41_call_sync_ops = { |
ce5039c1 | 997 | .rpc_call_prepare = nfs41_call_sync_prepare, |
69ab40c4 | 998 | .rpc_call_done = nfs41_call_sync_done, |
ce5039c1 AA |
999 | }; |
1000 | ||
3bd2384a CL |
1001 | #else /* !CONFIG_NFS_V4_1 */ |
1002 | ||
2e80dbe7 TM |
1003 | static int nfs4_sequence_process(struct rpc_task *task, struct nfs4_sequence_res *res) |
1004 | { | |
1005 | return nfs40_sequence_done(task, res); | |
1006 | } | |
1007 | ||
1008 | static void nfs4_sequence_free_slot(struct nfs4_sequence_res *res) | |
1009 | { | |
1010 | if (res->sr_slot != NULL) | |
1011 | nfs40_sequence_free_slot(res); | |
1012 | } | |
1013 | ||
2c4b131d PT |
1014 | int nfs4_sequence_done(struct rpc_task *task, |
1015 | struct nfs4_sequence_res *res) | |
9915ea7e | 1016 | { |
3bd2384a | 1017 | return nfs40_sequence_done(task, res); |
9915ea7e | 1018 | } |
2c4b131d | 1019 | EXPORT_SYMBOL_GPL(nfs4_sequence_done); |
3bd2384a CL |
1020 | |
1021 | #endif /* !CONFIG_NFS_V4_1 */ | |
9915ea7e | 1022 | |
c1dffe0b TM |
1023 | static void nfs41_sequence_res_init(struct nfs4_sequence_res *res) |
1024 | { | |
1025 | res->sr_timestamp = jiffies; | |
1026 | res->sr_status_flags = 0; | |
1027 | res->sr_status = 1; | |
1028 | } | |
1029 | ||
3be0f80b TM |
1030 | static |
1031 | void nfs4_sequence_attach_slot(struct nfs4_sequence_args *args, | |
1032 | struct nfs4_sequence_res *res, | |
1033 | struct nfs4_slot *slot) | |
1034 | { | |
1035 | if (!slot) | |
1036 | return; | |
1037 | slot->privileged = args->sa_privileged ? 1 : 0; | |
1038 | args->sa_slot = slot; | |
1039 | ||
1040 | res->sr_slot = slot; | |
3be0f80b TM |
1041 | } |
1042 | ||
1043 | int nfs4_setup_sequence(struct nfs_client *client, | |
7981c8a6 AS |
1044 | struct nfs4_sequence_args *args, |
1045 | struct nfs4_sequence_res *res, | |
1046 | struct rpc_task *task) | |
1047 | { | |
7981c8a6 | 1048 | struct nfs4_session *session = nfs4_get_session(client); |
76ee0354 | 1049 | struct nfs4_slot_table *tbl = client->cl_slot_tbl; |
3d35808b | 1050 | struct nfs4_slot *slot; |
7981c8a6 | 1051 | |
9dd9107f AS |
1052 | /* slot already allocated? */ |
1053 | if (res->sr_slot != NULL) | |
1054 | goto out_start; | |
1055 | ||
6b2e6856 | 1056 | if (session) |
76ee0354 | 1057 | tbl = &session->fc_slot_table; |
76ee0354 | 1058 | |
3453d570 TM |
1059 | spin_lock(&tbl->slot_tbl_lock); |
1060 | /* The state manager will wait until the slot table is empty */ | |
1061 | if (nfs4_slot_tbl_draining(tbl) && !args->sa_privileged) | |
1062 | goto out_sleep; | |
1063 | ||
1064 | slot = nfs4_alloc_slot(tbl); | |
1065 | if (IS_ERR(slot)) { | |
3453d570 | 1066 | if (slot == ERR_PTR(-ENOMEM)) |
6b2e6856 | 1067 | goto out_sleep_timeout; |
3453d570 | 1068 | goto out_sleep; |
3d35808b | 1069 | } |
3453d570 | 1070 | spin_unlock(&tbl->slot_tbl_lock); |
3d35808b | 1071 | |
3be0f80b | 1072 | nfs4_sequence_attach_slot(args, res, slot); |
3d35808b | 1073 | |
ad05cc0f | 1074 | trace_nfs4_setup_sequence(session, args); |
9dd9107f | 1075 | out_start: |
c1dffe0b | 1076 | nfs41_sequence_res_init(res); |
9dd9107f AS |
1077 | rpc_call_start(task); |
1078 | return 0; | |
6b2e6856 TM |
1079 | out_sleep_timeout: |
1080 | /* Try again in 1/4 second */ | |
1081 | if (args->sa_privileged) | |
1082 | rpc_sleep_on_priority_timeout(&tbl->slot_tbl_waitq, task, | |
1083 | jiffies + (HZ >> 2), RPC_PRIORITY_PRIVILEGED); | |
1084 | else | |
1085 | rpc_sleep_on_timeout(&tbl->slot_tbl_waitq, task, | |
1086 | NULL, jiffies + (HZ >> 2)); | |
1087 | spin_unlock(&tbl->slot_tbl_lock); | |
1088 | return -EAGAIN; | |
0dcee8bb AS |
1089 | out_sleep: |
1090 | if (args->sa_privileged) | |
1091 | rpc_sleep_on_priority(&tbl->slot_tbl_waitq, task, | |
8357a9b6 | 1092 | RPC_PRIORITY_PRIVILEGED); |
0dcee8bb AS |
1093 | else |
1094 | rpc_sleep_on(&tbl->slot_tbl_waitq, task, NULL); | |
1095 | spin_unlock(&tbl->slot_tbl_lock); | |
1096 | return -EAGAIN; | |
7981c8a6 AS |
1097 | } |
1098 | EXPORT_SYMBOL_GPL(nfs4_setup_sequence); | |
1099 | ||
9915ea7e CL |
1100 | static void nfs40_call_sync_prepare(struct rpc_task *task, void *calldata) |
1101 | { | |
1102 | struct nfs4_call_sync_data *data = calldata; | |
42e1cca7 | 1103 | nfs4_setup_sequence(data->seq_server->nfs_client, |
9915ea7e CL |
1104 | data->seq_args, data->seq_res, task); |
1105 | } | |
1106 | ||
1107 | static void nfs40_call_sync_done(struct rpc_task *task, void *calldata) | |
1108 | { | |
1109 | struct nfs4_call_sync_data *data = calldata; | |
1110 | nfs4_sequence_done(task, data->seq_res); | |
1111 | } | |
1112 | ||
1113 | static const struct rpc_call_ops nfs40_call_sync_ops = { | |
1114 | .rpc_call_prepare = nfs40_call_sync_prepare, | |
1115 | .rpc_call_done = nfs40_call_sync_done, | |
1116 | }; | |
1117 | ||
48c05854 AS |
1118 | static int nfs4_call_sync_custom(struct rpc_task_setup *task_setup) |
1119 | { | |
1120 | int ret; | |
1121 | struct rpc_task *task; | |
1122 | ||
1123 | task = rpc_run_task(task_setup); | |
1124 | if (IS_ERR(task)) | |
1125 | return PTR_ERR(task); | |
1126 | ||
1127 | ret = task->tk_status; | |
1128 | rpc_put_task(task); | |
1129 | return ret; | |
1130 | } | |
1131 | ||
c74dfe97 TM |
1132 | static int nfs4_do_call_sync(struct rpc_clnt *clnt, |
1133 | struct nfs_server *server, | |
1134 | struct rpc_message *msg, | |
1135 | struct nfs4_sequence_args *args, | |
1136 | struct nfs4_sequence_res *res, | |
1137 | unsigned short task_flags) | |
ce5039c1 | 1138 | { |
9915ea7e | 1139 | struct nfs_client *clp = server->nfs_client; |
2a3eb2b9 | 1140 | struct nfs4_call_sync_data data = { |
035168ab | 1141 | .seq_server = server, |
ce5039c1 AA |
1142 | .seq_args = args, |
1143 | .seq_res = res, | |
ce5039c1 AA |
1144 | }; |
1145 | struct rpc_task_setup task_setup = { | |
7c513058 | 1146 | .rpc_client = clnt, |
ce5039c1 | 1147 | .rpc_message = msg, |
9915ea7e | 1148 | .callback_ops = clp->cl_mvops->call_sync_ops, |
c74dfe97 TM |
1149 | .callback_data = &data, |
1150 | .flags = task_flags, | |
ce5039c1 AA |
1151 | }; |
1152 | ||
48c05854 | 1153 | return nfs4_call_sync_custom(&task_setup); |
ce5039c1 AA |
1154 | } |
1155 | ||
c74dfe97 TM |
1156 | static int nfs4_call_sync_sequence(struct rpc_clnt *clnt, |
1157 | struct nfs_server *server, | |
1158 | struct rpc_message *msg, | |
1159 | struct nfs4_sequence_args *args, | |
1160 | struct nfs4_sequence_res *res) | |
1161 | { | |
85e39fee OK |
1162 | unsigned short task_flags = 0; |
1163 | ||
1164 | if (server->nfs_client->cl_minorversion) | |
1165 | task_flags = RPC_TASK_MOVEABLE; | |
1166 | return nfs4_do_call_sync(clnt, server, msg, args, res, task_flags); | |
c74dfe97 TM |
1167 | } |
1168 | ||
1169 | ||
7c513058 BS |
1170 | int nfs4_call_sync(struct rpc_clnt *clnt, |
1171 | struct nfs_server *server, | |
e73b83f2 BS |
1172 | struct rpc_message *msg, |
1173 | struct nfs4_sequence_args *args, | |
1174 | struct nfs4_sequence_res *res, | |
1175 | int cache_reply) | |
1176 | { | |
fba83f34 | 1177 | nfs4_init_sequence(args, res, cache_reply, 0); |
9915ea7e | 1178 | return nfs4_call_sync_sequence(clnt, server, msg, args, res); |
e73b83f2 | 1179 | } |
cccef3b9 | 1180 | |
3c591175 TM |
1181 | static void |
1182 | nfs4_inc_nlink_locked(struct inode *inode) | |
1183 | { | |
82eae5a4 TM |
1184 | nfs_set_cache_invalid(inode, NFS_INO_INVALID_CHANGE | |
1185 | NFS_INO_INVALID_CTIME | | |
1186 | NFS_INO_INVALID_NLINK); | |
3c591175 TM |
1187 | inc_nlink(inode); |
1188 | } | |
1189 | ||
1301e421 TM |
1190 | static void |
1191 | nfs4_inc_nlink(struct inode *inode) | |
1192 | { | |
1193 | spin_lock(&inode->i_lock); | |
1194 | nfs4_inc_nlink_locked(inode); | |
1195 | spin_unlock(&inode->i_lock); | |
1196 | } | |
1197 | ||
3c591175 TM |
1198 | static void |
1199 | nfs4_dec_nlink_locked(struct inode *inode) | |
1200 | { | |
82eae5a4 TM |
1201 | nfs_set_cache_invalid(inode, NFS_INO_INVALID_CHANGE | |
1202 | NFS_INO_INVALID_CTIME | | |
1203 | NFS_INO_INVALID_NLINK); | |
3c591175 TM |
1204 | drop_nlink(inode); |
1205 | } | |
1206 | ||
1207 | static void | |
1b523ca9 FL |
1208 | nfs4_update_changeattr_locked(struct inode *inode, |
1209 | struct nfs4_change_info *cinfo, | |
5636ec4e | 1210 | unsigned long timestamp, unsigned long cache_validity) |
1da177e4 | 1211 | { |
1b523ca9 | 1212 | struct nfs_inode *nfsi = NFS_I(inode); |
6f9be83d | 1213 | u64 change_attr = inode_peek_iversion_raw(inode); |
1da177e4 | 1214 | |
b6f80a2e | 1215 | cache_validity |= NFS_INO_INVALID_CTIME | NFS_INO_INVALID_MTIME; |
20cf7d4e TM |
1216 | if (S_ISDIR(inode->i_mode)) |
1217 | cache_validity |= NFS_INO_INVALID_DATA; | |
1b523ca9 | 1218 | |
6f9be83d TM |
1219 | switch (NFS_SERVER(inode)->change_attr_type) { |
1220 | case NFS4_CHANGE_TYPE_IS_UNDEFINED: | |
20cf7d4e | 1221 | if (cinfo->after == change_attr) |
6f9be83d TM |
1222 | goto out; |
1223 | break; | |
1224 | default: | |
1225 | if ((s64)(change_attr - cinfo->after) >= 0) | |
1226 | goto out; | |
1227 | } | |
1228 | ||
20cf7d4e TM |
1229 | inode_set_iversion_raw(inode, cinfo->after); |
1230 | if (!cinfo->atomic || cinfo->before != change_attr) { | |
1231 | if (S_ISDIR(inode->i_mode)) | |
1b523ca9 | 1232 | nfs_force_lookup_revalidate(inode); |
1b523ca9 | 1233 | |
20cf7d4e TM |
1234 | if (!NFS_PROTO(inode)->have_delegation(inode, FMODE_READ)) |
1235 | cache_validity |= | |
1236 | NFS_INO_INVALID_ACCESS | NFS_INO_INVALID_ACL | | |
1237 | NFS_INO_INVALID_SIZE | NFS_INO_INVALID_OTHER | | |
1238 | NFS_INO_INVALID_BLOCKS | NFS_INO_INVALID_NLINK | | |
b47f7b5d | 1239 | NFS_INO_INVALID_MODE | NFS_INO_INVALID_XATTR; |
20cf7d4e | 1240 | nfsi->attrtimeo = NFS_MINATTRTIMEO(inode); |
e603a4c1 | 1241 | } |
20cf7d4e | 1242 | nfsi->attrtimeo_timestamp = jiffies; |
d3129ef6 | 1243 | nfsi->read_cache_jiffies = timestamp; |
3235b403 | 1244 | nfsi->attr_gencount = nfs_inc_attr_generation_counter(); |
c8d07159 | 1245 | nfsi->cache_validity &= ~NFS_INO_INVALID_CHANGE; |
6f9be83d TM |
1246 | out: |
1247 | nfs_set_cache_invalid(inode, cache_validity); | |
3c591175 TM |
1248 | } |
1249 | ||
1b523ca9 FL |
1250 | void |
1251 | nfs4_update_changeattr(struct inode *dir, struct nfs4_change_info *cinfo, | |
5636ec4e | 1252 | unsigned long timestamp, unsigned long cache_validity) |
3c591175 TM |
1253 | { |
1254 | spin_lock(&dir->i_lock); | |
1b523ca9 | 1255 | nfs4_update_changeattr_locked(dir, cinfo, timestamp, cache_validity); |
38478b24 | 1256 | spin_unlock(&dir->i_lock); |
1da177e4 LT |
1257 | } |
1258 | ||
8fd1ab74 TM |
1259 | struct nfs4_open_createattrs { |
1260 | struct nfs4_label *label; | |
1261 | struct iattr *sattr; | |
1262 | const __u32 verf[2]; | |
1263 | }; | |
1264 | ||
49f9a0fa TM |
1265 | static bool nfs4_clear_cap_atomic_open_v1(struct nfs_server *server, |
1266 | int err, struct nfs4_exception *exception) | |
1267 | { | |
1268 | if (err != -EINVAL) | |
1269 | return false; | |
1270 | if (!(server->caps & NFS_CAP_ATOMIC_OPEN_V1)) | |
1271 | return false; | |
1272 | server->caps &= ~NFS_CAP_ATOMIC_OPEN_V1; | |
1273 | exception->retry = 1; | |
1274 | return true; | |
1275 | } | |
1276 | ||
1bf85d8c TM |
1277 | static fmode_t _nfs4_ctx_to_accessmode(const struct nfs_open_context *ctx) |
1278 | { | |
1279 | return ctx->mode & (FMODE_READ|FMODE_WRITE|FMODE_EXEC); | |
1280 | } | |
1281 | ||
1282 | static fmode_t _nfs4_ctx_to_openmode(const struct nfs_open_context *ctx) | |
1283 | { | |
1284 | fmode_t ret = ctx->mode & (FMODE_READ|FMODE_WRITE); | |
1285 | ||
1286 | return (ctx->mode & FMODE_EXEC) ? FMODE_READ | ret : ret; | |
1287 | } | |
1288 | ||
6ae37339 TM |
1289 | static u32 |
1290 | nfs4_map_atomic_open_share(struct nfs_server *server, | |
1291 | fmode_t fmode, int openflags) | |
1292 | { | |
1293 | u32 res = 0; | |
1294 | ||
1295 | switch (fmode & (FMODE_READ | FMODE_WRITE)) { | |
1296 | case FMODE_READ: | |
1297 | res = NFS4_SHARE_ACCESS_READ; | |
1298 | break; | |
1299 | case FMODE_WRITE: | |
1300 | res = NFS4_SHARE_ACCESS_WRITE; | |
1301 | break; | |
1302 | case FMODE_READ|FMODE_WRITE: | |
1303 | res = NFS4_SHARE_ACCESS_BOTH; | |
1304 | } | |
1305 | if (!(server->caps & NFS_CAP_ATOMIC_OPEN_V1)) | |
1306 | goto out; | |
1307 | /* Want no delegation if we're using O_DIRECT */ | |
1308 | if (openflags & O_DIRECT) | |
1309 | res |= NFS4_SHARE_WANT_NO_DELEG; | |
1310 | out: | |
1311 | return res; | |
1312 | } | |
1313 | ||
49f9a0fa TM |
1314 | static enum open_claim_type4 |
1315 | nfs4_map_atomic_open_claim(struct nfs_server *server, | |
1316 | enum open_claim_type4 claim) | |
1317 | { | |
1318 | if (server->caps & NFS_CAP_ATOMIC_OPEN_V1) | |
1319 | return claim; | |
1320 | switch (claim) { | |
1321 | default: | |
1322 | return claim; | |
1323 | case NFS4_OPEN_CLAIM_FH: | |
1324 | return NFS4_OPEN_CLAIM_NULL; | |
1325 | case NFS4_OPEN_CLAIM_DELEG_CUR_FH: | |
1326 | return NFS4_OPEN_CLAIM_DELEGATE_CUR; | |
1327 | case NFS4_OPEN_CLAIM_DELEG_PREV_FH: | |
1328 | return NFS4_OPEN_CLAIM_DELEGATE_PREV; | |
1329 | } | |
1330 | } | |
2ced46c2 TM |
1331 | |
1332 | static void nfs4_init_opendata_res(struct nfs4_opendata *p) | |
1333 | { | |
1334 | p->o_res.f_attr = &p->f_attr; | |
1775fd3e | 1335 | p->o_res.f_label = p->f_label; |
c1d51931 TM |
1336 | p->o_res.seqid = p->o_arg.seqid; |
1337 | p->c_res.seqid = p->c_arg.seqid; | |
2ced46c2 | 1338 | p->o_res.server = p->o_arg.server; |
5f657530 | 1339 | p->o_res.access_request = p->o_arg.access; |
2ced46c2 | 1340 | nfs_fattr_init(&p->f_attr); |
6926afd1 | 1341 | nfs_fattr_init_names(&p->f_attr, &p->owner_name, &p->group_name); |
2ced46c2 TM |
1342 | } |
1343 | ||
82a2c1b7 | 1344 | static struct nfs4_opendata *nfs4_opendata_alloc(struct dentry *dentry, |
dc0b027d | 1345 | struct nfs4_state_owner *sp, fmode_t fmode, int flags, |
8fd1ab74 | 1346 | const struct nfs4_open_createattrs *c, |
4a1c0893 | 1347 | enum open_claim_type4 claim, |
8535b2be | 1348 | gfp_t gfp_mask) |
e56e0b78 | 1349 | { |
82a2c1b7 | 1350 | struct dentry *parent = dget_parent(dentry); |
2b0143b5 | 1351 | struct inode *dir = d_inode(parent); |
e56e0b78 | 1352 | struct nfs_server *server = NFS_SERVER(dir); |
63f5f796 | 1353 | struct nfs_seqid *(*alloc_seqid)(struct nfs_seqid_counter *, gfp_t); |
8fd1ab74 | 1354 | struct nfs4_label *label = (c != NULL) ? c->label : NULL; |
e56e0b78 TM |
1355 | struct nfs4_opendata *p; |
1356 | ||
8535b2be | 1357 | p = kzalloc(sizeof(*p), gfp_mask); |
e56e0b78 TM |
1358 | if (p == NULL) |
1359 | goto err; | |
14c43f76 DQ |
1360 | |
1361 | p->f_label = nfs4_label_alloc(server, gfp_mask); | |
1362 | if (IS_ERR(p->f_label)) | |
1363 | goto err_free_p; | |
1364 | ||
a49c2691 KM |
1365 | p->a_label = nfs4_label_alloc(server, gfp_mask); |
1366 | if (IS_ERR(p->a_label)) | |
1367 | goto err_free_f; | |
1368 | ||
63f5f796 TM |
1369 | alloc_seqid = server->nfs_client->cl_mvops->alloc_seqid; |
1370 | p->o_arg.seqid = alloc_seqid(&sp->so_seqid, gfp_mask); | |
badc76dd | 1371 | if (IS_ERR(p->o_arg.seqid)) |
14c43f76 | 1372 | goto err_free_label; |
82a2c1b7 AV |
1373 | nfs_sb_active(dentry->d_sb); |
1374 | p->dentry = dget(dentry); | |
e56e0b78 TM |
1375 | p->dir = parent; |
1376 | p->owner = sp; | |
1377 | atomic_inc(&sp->so_count); | |
dc0b027d TM |
1378 | p->o_arg.open_flags = flags; |
1379 | p->o_arg.fmode = fmode & (FMODE_READ|FMODE_WRITE); | |
536585cc | 1380 | p->o_arg.claim = nfs4_map_atomic_open_claim(server, claim); |
6ae37339 TM |
1381 | p->o_arg.share_access = nfs4_map_atomic_open_share(server, |
1382 | fmode, flags); | |
90910519 BC |
1383 | if (flags & O_CREAT) { |
1384 | p->o_arg.umask = current_umask(); | |
1385 | p->o_arg.label = nfs4_label_copy(p->a_label, label); | |
1386 | if (c->sattr != NULL && c->sattr->ia_valid != 0) { | |
1387 | p->o_arg.u.attrs = &p->attrs; | |
1388 | memcpy(&p->attrs, c->sattr, sizeof(p->attrs)); | |
1389 | ||
1390 | memcpy(p->o_arg.u.verifier.data, c->verf, | |
1391 | sizeof(p->o_arg.u.verifier.data)); | |
1392 | } | |
1393 | } | |
ae2bb032 WAA |
1394 | /* don't put an ACCESS op in OPEN compound if O_EXCL, because ACCESS |
1395 | * will return permission denied for all bits until close */ | |
1396 | if (!(flags & O_EXCL)) { | |
1397 | /* ask server to check for all possible rights as results | |
1398 | * are cached */ | |
536585cc TM |
1399 | switch (p->o_arg.claim) { |
1400 | default: | |
1401 | break; | |
1402 | case NFS4_OPEN_CLAIM_NULL: | |
1403 | case NFS4_OPEN_CLAIM_FH: | |
1404 | p->o_arg.access = NFS4_ACCESS_READ | | |
1405 | NFS4_ACCESS_MODIFY | | |
1406 | NFS4_ACCESS_EXTEND | | |
1407 | NFS4_ACCESS_EXECUTE; | |
72832a24 FL |
1408 | #ifdef CONFIG_NFS_V4_2 |
1409 | if (server->caps & NFS_CAP_XATTR) | |
1410 | p->o_arg.access |= NFS4_ACCESS_XAREAD | | |
1411 | NFS4_ACCESS_XAWRITE | | |
1412 | NFS4_ACCESS_XALIST; | |
1413 | #endif | |
536585cc | 1414 | } |
ae2bb032 | 1415 | } |
7539bbab | 1416 | p->o_arg.clientid = server->nfs_client->cl_clientid; |
95b72eb0 TM |
1417 | p->o_arg.id.create_time = ktime_to_ns(sp->so_seqid.create_time); |
1418 | p->o_arg.id.uniquifier = sp->so_seqid.owner_id; | |
82a2c1b7 | 1419 | p->o_arg.name = &dentry->d_name; |
e56e0b78 | 1420 | p->o_arg.server = server; |
aa9c2669 | 1421 | p->o_arg.bitmask = nfs4_bitmask(server, label); |
1549210f | 1422 | p->o_arg.open_bitmap = &nfs4_fattr_bitmap[0]; |
49f9a0fa | 1423 | switch (p->o_arg.claim) { |
4a1c0893 TM |
1424 | case NFS4_OPEN_CLAIM_NULL: |
1425 | case NFS4_OPEN_CLAIM_DELEGATE_CUR: | |
1426 | case NFS4_OPEN_CLAIM_DELEGATE_PREV: | |
1427 | p->o_arg.fh = NFS_FH(dir); | |
1428 | break; | |
1429 | case NFS4_OPEN_CLAIM_PREVIOUS: | |
1430 | case NFS4_OPEN_CLAIM_FH: | |
1431 | case NFS4_OPEN_CLAIM_DELEG_CUR_FH: | |
1432 | case NFS4_OPEN_CLAIM_DELEG_PREV_FH: | |
2b0143b5 | 1433 | p->o_arg.fh = NFS_FH(d_inode(dentry)); |
4a1c0893 | 1434 | } |
cdd4e68b TM |
1435 | p->c_arg.fh = &p->o_res.fh; |
1436 | p->c_arg.stateid = &p->o_res.stateid; | |
1437 | p->c_arg.seqid = p->o_arg.seqid; | |
2ced46c2 | 1438 | nfs4_init_opendata_res(p); |
c6d00e63 | 1439 | kref_init(&p->kref); |
e56e0b78 | 1440 | return p; |
14c43f76 DQ |
1441 | |
1442 | err_free_label: | |
a49c2691 KM |
1443 | nfs4_label_free(p->a_label); |
1444 | err_free_f: | |
14c43f76 DQ |
1445 | nfs4_label_free(p->f_label); |
1446 | err_free_p: | |
e56e0b78 TM |
1447 | kfree(p); |
1448 | err: | |
1449 | dput(parent); | |
1450 | return NULL; | |
1451 | } | |
1452 | ||
c6d00e63 | 1453 | static void nfs4_opendata_free(struct kref *kref) |
e56e0b78 | 1454 | { |
c6d00e63 TM |
1455 | struct nfs4_opendata *p = container_of(kref, |
1456 | struct nfs4_opendata, kref); | |
82a2c1b7 | 1457 | struct super_block *sb = p->dentry->d_sb; |
c6d00e63 | 1458 | |
30ae2412 | 1459 | nfs4_lgopen_release(p->lgp); |
c6d00e63 | 1460 | nfs_free_seqid(p->o_arg.seqid); |
2e80dbe7 | 1461 | nfs4_sequence_free_slot(&p->o_res.seq_res); |
aac00a8d TM |
1462 | if (p->state != NULL) |
1463 | nfs4_put_open_state(p->state); | |
c6d00e63 | 1464 | nfs4_put_state_owner(p->owner); |
14c43f76 | 1465 | |
a49c2691 | 1466 | nfs4_label_free(p->a_label); |
14c43f76 DQ |
1467 | nfs4_label_free(p->f_label); |
1468 | ||
c6d00e63 | 1469 | dput(p->dir); |
82a2c1b7 AV |
1470 | dput(p->dentry); |
1471 | nfs_sb_deactive(sb); | |
6926afd1 | 1472 | nfs_fattr_free_names(&p->f_attr); |
e911b815 | 1473 | kfree(p->f_attr.mdsthreshold); |
c6d00e63 TM |
1474 | kfree(p); |
1475 | } | |
1476 | ||
1477 | static void nfs4_opendata_put(struct nfs4_opendata *p) | |
1478 | { | |
1479 | if (p != NULL) | |
1480 | kref_put(&p->kref, nfs4_opendata_free); | |
e56e0b78 TM |
1481 | } |
1482 | ||
24311f88 TM |
1483 | static bool nfs4_mode_match_open_stateid(struct nfs4_state *state, |
1484 | fmode_t fmode) | |
1485 | { | |
1486 | switch(fmode & (FMODE_READ|FMODE_WRITE)) { | |
1487 | case FMODE_READ|FMODE_WRITE: | |
1488 | return state->n_rdwr != 0; | |
1489 | case FMODE_WRITE: | |
1490 | return state->n_wronly != 0; | |
1491 | case FMODE_READ: | |
1492 | return state->n_rdonly != 0; | |
1493 | } | |
1494 | WARN_ON_ONCE(1); | |
1495 | return false; | |
1496 | } | |
1497 | ||
be189f7e TM |
1498 | static int can_open_cached(struct nfs4_state *state, fmode_t mode, |
1499 | int open_mode, enum open_claim_type4 claim) | |
6ee41268 TM |
1500 | { |
1501 | int ret = 0; | |
dc0b027d | 1502 | |
536e43d1 | 1503 | if (open_mode & (O_EXCL|O_TRUNC)) |
dc0b027d | 1504 | goto out; |
be189f7e TM |
1505 | switch (claim) { |
1506 | case NFS4_OPEN_CLAIM_NULL: | |
1507 | case NFS4_OPEN_CLAIM_FH: | |
1508 | goto out; | |
1509 | default: | |
1510 | break; | |
1511 | } | |
dc0b027d | 1512 | switch (mode & (FMODE_READ|FMODE_WRITE)) { |
6ee41268 | 1513 | case FMODE_READ: |
88069f77 TM |
1514 | ret |= test_bit(NFS_O_RDONLY_STATE, &state->flags) != 0 |
1515 | && state->n_rdonly != 0; | |
6ee41268 TM |
1516 | break; |
1517 | case FMODE_WRITE: | |
88069f77 TM |
1518 | ret |= test_bit(NFS_O_WRONLY_STATE, &state->flags) != 0 |
1519 | && state->n_wronly != 0; | |
6ee41268 TM |
1520 | break; |
1521 | case FMODE_READ|FMODE_WRITE: | |
88069f77 TM |
1522 | ret |= test_bit(NFS_O_RDWR_STATE, &state->flags) != 0 |
1523 | && state->n_rdwr != 0; | |
6ee41268 | 1524 | } |
dc0b027d | 1525 | out: |
6ee41268 TM |
1526 | return ret; |
1527 | } | |
1528 | ||
2a606188 TM |
1529 | static int can_open_delegated(struct nfs_delegation *delegation, fmode_t fmode, |
1530 | enum open_claim_type4 claim) | |
aac00a8d | 1531 | { |
652f89f6 TM |
1532 | if (delegation == NULL) |
1533 | return 0; | |
dc0b027d | 1534 | if ((delegation->type & fmode) != fmode) |
aac00a8d | 1535 | return 0; |
2a606188 TM |
1536 | switch (claim) { |
1537 | case NFS4_OPEN_CLAIM_NULL: | |
1538 | case NFS4_OPEN_CLAIM_FH: | |
1539 | break; | |
1540 | case NFS4_OPEN_CLAIM_PREVIOUS: | |
1541 | if (!test_bit(NFS_DELEGATION_NEED_RECLAIM, &delegation->flags)) | |
1542 | break; | |
df561f66 | 1543 | fallthrough; |
2a606188 TM |
1544 | default: |
1545 | return 0; | |
1546 | } | |
b7391f44 | 1547 | nfs_mark_delegation_referenced(delegation); |
aac00a8d TM |
1548 | return 1; |
1549 | } | |
1550 | ||
dc0b027d | 1551 | static void update_open_stateflags(struct nfs4_state *state, fmode_t fmode) |
e7616923 | 1552 | { |
dc0b027d | 1553 | switch (fmode) { |
e7616923 TM |
1554 | case FMODE_WRITE: |
1555 | state->n_wronly++; | |
1556 | break; | |
1557 | case FMODE_READ: | |
1558 | state->n_rdonly++; | |
1559 | break; | |
1560 | case FMODE_READ|FMODE_WRITE: | |
1561 | state->n_rdwr++; | |
1562 | } | |
dc0b027d | 1563 | nfs4_state_set_mode_locked(state, state->state | fmode); |
003707c7 TM |
1564 | } |
1565 | ||
8a64c4ef TM |
1566 | #ifdef CONFIG_NFS_V4_1 |
1567 | static bool nfs_open_stateid_recover_openmode(struct nfs4_state *state) | |
1568 | { | |
1569 | if (state->n_rdonly && !test_bit(NFS_O_RDONLY_STATE, &state->flags)) | |
1570 | return true; | |
1571 | if (state->n_wronly && !test_bit(NFS_O_WRONLY_STATE, &state->flags)) | |
1572 | return true; | |
1573 | if (state->n_rdwr && !test_bit(NFS_O_RDWR_STATE, &state->flags)) | |
1574 | return true; | |
1575 | return false; | |
1576 | } | |
1577 | #endif /* CONFIG_NFS_V4_1 */ | |
1578 | ||
c9399f21 TM |
1579 | static void nfs_state_log_update_open_stateid(struct nfs4_state *state) |
1580 | { | |
1581 | if (test_and_clear_bit(NFS_STATE_CHANGE_WAIT, &state->flags)) | |
1582 | wake_up_all(&state->waitq); | |
1583 | } | |
1584 | ||
4f14c194 TM |
1585 | static void nfs_test_and_clear_all_open_stateid(struct nfs4_state *state) |
1586 | { | |
1587 | struct nfs_client *clp = state->owner->so_server->nfs_client; | |
1588 | bool need_recover = false; | |
1589 | ||
1590 | if (test_and_clear_bit(NFS_O_RDONLY_STATE, &state->flags) && state->n_rdonly) | |
1591 | need_recover = true; | |
1592 | if (test_and_clear_bit(NFS_O_WRONLY_STATE, &state->flags) && state->n_wronly) | |
1593 | need_recover = true; | |
1594 | if (test_and_clear_bit(NFS_O_RDWR_STATE, &state->flags) && state->n_rdwr) | |
1595 | need_recover = true; | |
1596 | if (need_recover) | |
1597 | nfs4_state_mark_reclaim_nograce(clp, state); | |
1598 | } | |
1599 | ||
c9399f21 TM |
1600 | /* |
1601 | * Check for whether or not the caller may update the open stateid | |
1602 | * to the value passed in by stateid. | |
1603 | * | |
1604 | * Note: This function relies heavily on the server implementing | |
1605 | * RFC7530 Section 9.1.4.2, and RFC5661 Section 8.2.2 | |
1606 | * correctly. | |
1607 | * i.e. The stateid seqids have to be initialised to 1, and | |
1608 | * are then incremented on every state transition. | |
1609 | */ | |
b4868b44 | 1610 | static bool nfs_stateid_is_sequential(struct nfs4_state *state, |
c9399f21 | 1611 | const nfs4_stateid *stateid) |
e999e80e | 1612 | { |
b4868b44 BC |
1613 | if (test_bit(NFS_OPEN_STATE, &state->flags)) { |
1614 | /* The common case - we're updating to a new sequence number */ | |
f7b76545 TM |
1615 | if (nfs4_stateid_match_other(stateid, &state->open_stateid)) { |
1616 | if (nfs4_stateid_is_next(&state->open_stateid, stateid)) | |
1617 | return true; | |
1618 | return false; | |
b4868b44 | 1619 | } |
f7b76545 | 1620 | /* The server returned a new stateid */ |
c9399f21 | 1621 | } |
f7b76545 TM |
1622 | /* This is the first OPEN in this generation */ |
1623 | if (stateid->seqid == cpu_to_be32(1)) | |
1624 | return true; | |
e999e80e TM |
1625 | return false; |
1626 | } | |
1627 | ||
f95549cf TM |
1628 | static void nfs_resync_open_stateid_locked(struct nfs4_state *state) |
1629 | { | |
3c38cbe2 TM |
1630 | if (!(state->n_wronly || state->n_rdonly || state->n_rdwr)) |
1631 | return; | |
f95549cf TM |
1632 | if (state->n_wronly) |
1633 | set_bit(NFS_O_WRONLY_STATE, &state->flags); | |
1634 | if (state->n_rdonly) | |
1635 | set_bit(NFS_O_RDONLY_STATE, &state->flags); | |
1636 | if (state->n_rdwr) | |
1637 | set_bit(NFS_O_RDWR_STATE, &state->flags); | |
3c38cbe2 | 1638 | set_bit(NFS_OPEN_STATE, &state->flags); |
f95549cf TM |
1639 | } |
1640 | ||
226056c5 TM |
1641 | static void nfs_clear_open_stateid_locked(struct nfs4_state *state, |
1642 | nfs4_stateid *stateid, fmode_t fmode) | |
003707c7 | 1643 | { |
226056c5 TM |
1644 | clear_bit(NFS_O_RDWR_STATE, &state->flags); |
1645 | switch (fmode & (FMODE_READ|FMODE_WRITE)) { | |
1646 | case FMODE_WRITE: | |
1647 | clear_bit(NFS_O_RDONLY_STATE, &state->flags); | |
1648 | break; | |
1649 | case FMODE_READ: | |
1650 | clear_bit(NFS_O_WRONLY_STATE, &state->flags); | |
1651 | break; | |
1652 | case 0: | |
1653 | clear_bit(NFS_O_RDONLY_STATE, &state->flags); | |
1654 | clear_bit(NFS_O_WRONLY_STATE, &state->flags); | |
1655 | clear_bit(NFS_OPEN_STATE, &state->flags); | |
1656 | } | |
1657 | if (stateid == NULL) | |
1658 | return; | |
3e7dfb16 TM |
1659 | /* Handle OPEN+OPEN_DOWNGRADE races */ |
1660 | if (nfs4_stateid_match_other(stateid, &state->open_stateid) && | |
1661 | !nfs4_stateid_is_newer(stateid, &state->open_stateid)) { | |
f95549cf | 1662 | nfs_resync_open_stateid_locked(state); |
c9399f21 | 1663 | goto out; |
f95549cf | 1664 | } |
003707c7 | 1665 | if (test_bit(NFS_DELEGATED_STATE, &state->flags) == 0) |
f597c537 TM |
1666 | nfs4_stateid_copy(&state->stateid, stateid); |
1667 | nfs4_stateid_copy(&state->open_stateid, stateid); | |
ad9e02dc | 1668 | trace_nfs4_open_stateid_update(state->inode, stateid, 0); |
c9399f21 TM |
1669 | out: |
1670 | nfs_state_log_update_open_stateid(state); | |
226056c5 TM |
1671 | } |
1672 | ||
4a1e2feb TM |
1673 | static void nfs_clear_open_stateid(struct nfs4_state *state, |
1674 | nfs4_stateid *arg_stateid, | |
1675 | nfs4_stateid *stateid, fmode_t fmode) | |
226056c5 TM |
1676 | { |
1677 | write_seqlock(&state->seqlock); | |
3e7dfb16 TM |
1678 | /* Ignore, if the CLOSE argment doesn't match the current stateid */ |
1679 | if (nfs4_state_match_open_stateid_other(state, arg_stateid)) | |
1680 | nfs_clear_open_stateid_locked(state, stateid, fmode); | |
226056c5 | 1681 | write_sequnlock(&state->seqlock); |
4f14c194 TM |
1682 | if (test_bit(NFS_STATE_RECLAIM_NOGRACE, &state->flags)) |
1683 | nfs4_schedule_state_manager(state->owner->so_server->nfs_client); | |
226056c5 TM |
1684 | } |
1685 | ||
1393d961 | 1686 | static void nfs_set_open_stateid_locked(struct nfs4_state *state, |
c9399f21 | 1687 | const nfs4_stateid *stateid, nfs4_stateid *freeme) |
e9acf210 TM |
1688 | __must_hold(&state->owner->so_lock) |
1689 | __must_hold(&state->seqlock) | |
1690 | __must_hold(RCU) | |
1691 | ||
003707c7 | 1692 | { |
c9399f21 TM |
1693 | DEFINE_WAIT(wait); |
1694 | int status = 0; | |
1695 | for (;;) { | |
1696 | ||
b4868b44 | 1697 | if (nfs_stateid_is_sequential(state, stateid)) |
003707c7 | 1698 | break; |
b4868b44 | 1699 | |
c9399f21 | 1700 | if (status) |
003707c7 | 1701 | break; |
c9399f21 TM |
1702 | /* Rely on seqids for serialisation with NFSv4.0 */ |
1703 | if (!nfs4_has_session(NFS_SERVER(state->inode)->nfs_client)) | |
1704 | break; | |
1705 | ||
b4868b44 | 1706 | set_bit(NFS_STATE_CHANGE_WAIT, &state->flags); |
c9399f21 TM |
1707 | prepare_to_wait(&state->waitq, &wait, TASK_KILLABLE); |
1708 | /* | |
1709 | * Ensure we process the state changes in the same order | |
1710 | * in which the server processed them by delaying the | |
1711 | * update of the stateid until we are in sequence. | |
1712 | */ | |
1713 | write_sequnlock(&state->seqlock); | |
1714 | spin_unlock(&state->owner->so_lock); | |
1715 | rcu_read_unlock(); | |
ad9e02dc | 1716 | trace_nfs4_open_stateid_update_wait(state->inode, stateid, 0); |
b4868b44 | 1717 | |
bb002388 | 1718 | if (!fatal_signal_pending(current)) { |
c9399f21 TM |
1719 | if (schedule_timeout(5*HZ) == 0) |
1720 | status = -EAGAIN; | |
1721 | else | |
1722 | status = 0; | |
1723 | } else | |
1724 | status = -EINTR; | |
1725 | finish_wait(&state->waitq, &wait); | |
1726 | rcu_read_lock(); | |
1727 | spin_lock(&state->owner->so_lock); | |
1728 | write_seqlock(&state->seqlock); | |
003707c7 | 1729 | } |
c9399f21 | 1730 | |
e1fff5df TM |
1731 | if (test_bit(NFS_OPEN_STATE, &state->flags) && |
1732 | !nfs4_stateid_match_other(stateid, &state->open_stateid)) { | |
c9399f21 TM |
1733 | nfs4_stateid_copy(freeme, &state->open_stateid); |
1734 | nfs_test_and_clear_all_open_stateid(state); | |
1735 | } | |
1736 | ||
e999e80e TM |
1737 | if (test_bit(NFS_DELEGATED_STATE, &state->flags) == 0) |
1738 | nfs4_stateid_copy(&state->stateid, stateid); | |
1739 | nfs4_stateid_copy(&state->open_stateid, stateid); | |
ad9e02dc | 1740 | trace_nfs4_open_stateid_update(state->inode, stateid, status); |
c9399f21 | 1741 | nfs_state_log_update_open_stateid(state); |
003707c7 TM |
1742 | } |
1743 | ||
c9399f21 | 1744 | static void nfs_state_set_open_stateid(struct nfs4_state *state, |
1393d961 | 1745 | const nfs4_stateid *open_stateid, |
1393d961 TM |
1746 | fmode_t fmode, |
1747 | nfs4_stateid *freeme) | |
1da177e4 | 1748 | { |
8bda4e4c TM |
1749 | /* |
1750 | * Protect the call to nfs4_state_set_mode_locked and | |
1751 | * serialise the stateid update | |
1752 | */ | |
1753 | write_seqlock(&state->seqlock); | |
c9399f21 TM |
1754 | nfs_set_open_stateid_locked(state, open_stateid, freeme); |
1755 | switch (fmode) { | |
1756 | case FMODE_READ: | |
1757 | set_bit(NFS_O_RDONLY_STATE, &state->flags); | |
1758 | break; | |
1759 | case FMODE_WRITE: | |
1760 | set_bit(NFS_O_WRONLY_STATE, &state->flags); | |
1761 | break; | |
1762 | case FMODE_READ|FMODE_WRITE: | |
1763 | set_bit(NFS_O_RDWR_STATE, &state->flags); | |
003707c7 | 1764 | } |
c9399f21 TM |
1765 | set_bit(NFS_OPEN_STATE, &state->flags); |
1766 | write_sequnlock(&state->seqlock); | |
1767 | } | |
1768 | ||
27a30cf6 TM |
1769 | static void nfs_state_clear_open_state_flags(struct nfs4_state *state) |
1770 | { | |
1771 | clear_bit(NFS_O_RDWR_STATE, &state->flags); | |
1772 | clear_bit(NFS_O_WRONLY_STATE, &state->flags); | |
1773 | clear_bit(NFS_O_RDONLY_STATE, &state->flags); | |
1774 | clear_bit(NFS_OPEN_STATE, &state->flags); | |
1775 | } | |
1776 | ||
c9399f21 TM |
1777 | static void nfs_state_set_delegation(struct nfs4_state *state, |
1778 | const nfs4_stateid *deleg_stateid, | |
1779 | fmode_t fmode) | |
1780 | { | |
1781 | /* | |
1782 | * Protect the call to nfs4_state_set_mode_locked and | |
1783 | * serialise the stateid update | |
1784 | */ | |
1785 | write_seqlock(&state->seqlock); | |
1786 | nfs4_stateid_copy(&state->stateid, deleg_stateid); | |
1787 | set_bit(NFS_DELEGATED_STATE, &state->flags); | |
8bda4e4c | 1788 | write_sequnlock(&state->seqlock); |
1da177e4 LT |
1789 | } |
1790 | ||
9f0c5124 TM |
1791 | static void nfs_state_clear_delegation(struct nfs4_state *state) |
1792 | { | |
1793 | write_seqlock(&state->seqlock); | |
1794 | nfs4_stateid_copy(&state->stateid, &state->open_stateid); | |
1795 | clear_bit(NFS_DELEGATED_STATE, &state->flags); | |
1796 | write_sequnlock(&state->seqlock); | |
1797 | } | |
1798 | ||
ec4b0925 | 1799 | int update_open_stateid(struct nfs4_state *state, |
1393d961 TM |
1800 | const nfs4_stateid *open_stateid, |
1801 | const nfs4_stateid *delegation, | |
1802 | fmode_t fmode) | |
34310430 | 1803 | { |
1393d961 TM |
1804 | struct nfs_server *server = NFS_SERVER(state->inode); |
1805 | struct nfs_client *clp = server->nfs_client; | |
34310430 TM |
1806 | struct nfs_inode *nfsi = NFS_I(state->inode); |
1807 | struct nfs_delegation *deleg_cur; | |
83aa3e0f | 1808 | nfs4_stateid freeme = { }; |
34310430 TM |
1809 | int ret = 0; |
1810 | ||
dc0b027d | 1811 | fmode &= (FMODE_READ|FMODE_WRITE); |
34310430 TM |
1812 | |
1813 | rcu_read_lock(); | |
c9399f21 TM |
1814 | spin_lock(&state->owner->so_lock); |
1815 | if (open_stateid != NULL) { | |
1816 | nfs_state_set_open_stateid(state, open_stateid, fmode, &freeme); | |
1817 | ret = 1; | |
1818 | } | |
1819 | ||
333ac786 | 1820 | deleg_cur = nfs4_get_valid_delegation(state->inode); |
34310430 TM |
1821 | if (deleg_cur == NULL) |
1822 | goto no_delegation; | |
1823 | ||
1824 | spin_lock(&deleg_cur->lock); | |
17f26b12 | 1825 | if (rcu_dereference(nfsi->delegation) != deleg_cur || |
d25be546 | 1826 | test_bit(NFS_DELEGATION_RETURNING, &deleg_cur->flags) || |
dc0b027d | 1827 | (deleg_cur->type & fmode) != fmode) |
34310430 TM |
1828 | goto no_delegation_unlock; |
1829 | ||
1830 | if (delegation == NULL) | |
1831 | delegation = &deleg_cur->stateid; | |
333ac786 | 1832 | else if (!nfs4_stateid_match_other(&deleg_cur->stateid, delegation)) |
34310430 TM |
1833 | goto no_delegation_unlock; |
1834 | ||
b7391f44 | 1835 | nfs_mark_delegation_referenced(deleg_cur); |
c9399f21 | 1836 | nfs_state_set_delegation(state, &deleg_cur->stateid, fmode); |
34310430 TM |
1837 | ret = 1; |
1838 | no_delegation_unlock: | |
1839 | spin_unlock(&deleg_cur->lock); | |
1840 | no_delegation: | |
c9399f21 TM |
1841 | if (ret) |
1842 | update_open_stateflags(state, fmode); | |
1843 | spin_unlock(&state->owner->so_lock); | |
34310430 TM |
1844 | rcu_read_unlock(); |
1845 | ||
4f14c194 | 1846 | if (test_bit(NFS_STATE_RECLAIM_NOGRACE, &state->flags)) |
1393d961 TM |
1847 | nfs4_schedule_state_manager(clp); |
1848 | if (freeme.type != 0) | |
1849 | nfs4_test_and_free_stateid(server, &freeme, | |
1850 | state->owner->so_cred); | |
34310430 TM |
1851 | |
1852 | return ret; | |
1853 | } | |
1854 | ||
39071e6f TM |
1855 | static bool nfs4_update_lock_stateid(struct nfs4_lock_state *lsp, |
1856 | const nfs4_stateid *stateid) | |
1857 | { | |
1858 | struct nfs4_state *state = lsp->ls_state; | |
1859 | bool ret = false; | |
1860 | ||
1861 | spin_lock(&state->state_lock); | |
1862 | if (!nfs4_stateid_match_other(stateid, &lsp->ls_stateid)) | |
1863 | goto out_noupdate; | |
1864 | if (!nfs4_stateid_is_newer(stateid, &lsp->ls_stateid)) | |
1865 | goto out_noupdate; | |
1866 | nfs4_stateid_copy(&lsp->ls_stateid, stateid); | |
1867 | ret = true; | |
1868 | out_noupdate: | |
1869 | spin_unlock(&state->state_lock); | |
1870 | return ret; | |
1871 | } | |
34310430 | 1872 | |
dc0b027d | 1873 | static void nfs4_return_incompatible_delegation(struct inode *inode, fmode_t fmode) |
aac00a8d TM |
1874 | { |
1875 | struct nfs_delegation *delegation; | |
1876 | ||
f5086242 | 1877 | fmode &= FMODE_READ|FMODE_WRITE; |
aac00a8d | 1878 | rcu_read_lock(); |
40e6aa10 | 1879 | delegation = nfs4_get_valid_delegation(inode); |
dc0b027d | 1880 | if (delegation == NULL || (delegation->type & fmode) == fmode) { |
aac00a8d TM |
1881 | rcu_read_unlock(); |
1882 | return; | |
1883 | } | |
1884 | rcu_read_unlock(); | |
57ec14c5 | 1885 | nfs4_inode_return_delegation(inode); |
aac00a8d TM |
1886 | } |
1887 | ||
6ee41268 | 1888 | static struct nfs4_state *nfs4_try_open_cached(struct nfs4_opendata *opendata) |
aac00a8d TM |
1889 | { |
1890 | struct nfs4_state *state = opendata->state; | |
aac00a8d | 1891 | struct nfs_delegation *delegation; |
f448badd | 1892 | int open_mode = opendata->o_arg.open_flags; |
dc0b027d | 1893 | fmode_t fmode = opendata->o_arg.fmode; |
2a606188 | 1894 | enum open_claim_type4 claim = opendata->o_arg.claim; |
aac00a8d TM |
1895 | nfs4_stateid stateid; |
1896 | int ret = -EAGAIN; | |
1897 | ||
aac00a8d | 1898 | for (;;) { |
61beef75 | 1899 | spin_lock(&state->owner->so_lock); |
be189f7e | 1900 | if (can_open_cached(state, fmode, open_mode, claim)) { |
61beef75 | 1901 | update_open_stateflags(state, fmode); |
6ee41268 | 1902 | spin_unlock(&state->owner->so_lock); |
61beef75 | 1903 | goto out_return_state; |
6ee41268 | 1904 | } |
61beef75 | 1905 | spin_unlock(&state->owner->so_lock); |
34310430 | 1906 | rcu_read_lock(); |
be3df3dd | 1907 | delegation = nfs4_get_valid_delegation(state->inode); |
2a606188 | 1908 | if (!can_open_delegated(delegation, fmode, claim)) { |
34310430 | 1909 | rcu_read_unlock(); |
aac00a8d | 1910 | break; |
34310430 | 1911 | } |
aac00a8d | 1912 | /* Save the delegation */ |
f597c537 | 1913 | nfs4_stateid_copy(&stateid, &delegation->stateid); |
aac00a8d | 1914 | rcu_read_unlock(); |
fa332941 | 1915 | nfs_release_seqid(opendata->o_arg.seqid); |
bdeca1b7 TM |
1916 | if (!opendata->is_recover) { |
1917 | ret = nfs_may_open(state->inode, state->owner->so_cred, open_mode); | |
1918 | if (ret != 0) | |
1919 | goto out; | |
1920 | } | |
aac00a8d | 1921 | ret = -EAGAIN; |
34310430 TM |
1922 | |
1923 | /* Try to update the stateid using the delegation */ | |
dc0b027d | 1924 | if (update_open_stateid(state, NULL, &stateid, fmode)) |
34310430 | 1925 | goto out_return_state; |
aac00a8d | 1926 | } |
aac00a8d TM |
1927 | out: |
1928 | return ERR_PTR(ret); | |
1929 | out_return_state: | |
ace9fad4 | 1930 | refcount_inc(&state->count); |
aac00a8d TM |
1931 | return state; |
1932 | } | |
1933 | ||
e23008ec AA |
1934 | static void |
1935 | nfs4_opendata_check_deleg(struct nfs4_opendata *data, struct nfs4_state *state) | |
1936 | { | |
1937 | struct nfs_client *clp = NFS_SERVER(state->inode)->nfs_client; | |
1938 | struct nfs_delegation *delegation; | |
1939 | int delegation_flags = 0; | |
1940 | ||
1941 | rcu_read_lock(); | |
1942 | delegation = rcu_dereference(NFS_I(state->inode)->delegation); | |
1943 | if (delegation) | |
1944 | delegation_flags = delegation->flags; | |
1945 | rcu_read_unlock(); | |
72d79ff8 TM |
1946 | switch (data->o_arg.claim) { |
1947 | default: | |
1948 | break; | |
1949 | case NFS4_OPEN_CLAIM_DELEGATE_CUR: | |
1950 | case NFS4_OPEN_CLAIM_DELEG_CUR_FH: | |
e23008ec AA |
1951 | pr_err_ratelimited("NFS: Broken NFSv4 server %s is " |
1952 | "returning a delegation for " | |
1953 | "OPEN(CLAIM_DELEGATE_CUR)\n", | |
1954 | clp->cl_hostname); | |
72d79ff8 TM |
1955 | return; |
1956 | } | |
1957 | if ((delegation_flags & 1UL<<NFS_DELEGATION_NEED_RECLAIM) == 0) | |
e23008ec | 1958 | nfs_inode_set_delegation(state->inode, |
35156bff TM |
1959 | data->owner->so_cred, |
1960 | data->o_res.delegation_type, | |
1961 | &data->o_res.delegation, | |
1962 | data->o_res.pagemod_limit); | |
e23008ec AA |
1963 | else |
1964 | nfs_inode_reclaim_delegation(state->inode, | |
35156bff TM |
1965 | data->owner->so_cred, |
1966 | data->o_res.delegation_type, | |
1967 | &data->o_res.delegation, | |
1968 | data->o_res.pagemod_limit); | |
8b199e58 JL |
1969 | |
1970 | if (data->o_res.do_recall) | |
1971 | nfs_async_inode_return_delegation(state->inode, | |
1972 | &data->o_res.delegation); | |
e23008ec AA |
1973 | } |
1974 | ||
1975 | /* | |
1976 | * Check the inode attributes against the CLAIM_PREVIOUS returned attributes | |
1977 | * and update the nfs4_state. | |
1978 | */ | |
1979 | static struct nfs4_state * | |
1980 | _nfs4_opendata_reclaim_to_nfs4_state(struct nfs4_opendata *data) | |
1981 | { | |
1982 | struct inode *inode = data->state->inode; | |
1983 | struct nfs4_state *state = data->state; | |
1984 | int ret; | |
1985 | ||
d2bfda2e | 1986 | if (!data->rpc_done) { |
37a8484a AS |
1987 | if (data->rpc_status) |
1988 | return ERR_PTR(data->rpc_status); | |
d2bfda2e WAA |
1989 | /* cached opens have already been processed */ |
1990 | goto update; | |
e23008ec AA |
1991 | } |
1992 | ||
e23008ec AA |
1993 | ret = nfs_refresh_inode(inode, &data->f_attr); |
1994 | if (ret) | |
37a8484a | 1995 | return ERR_PTR(ret); |
e23008ec AA |
1996 | |
1997 | if (data->o_res.delegation_type != 0) | |
1998 | nfs4_opendata_check_deleg(data, state); | |
d2bfda2e | 1999 | update: |
e3c8dc76 TM |
2000 | if (!update_open_stateid(state, &data->o_res.stateid, |
2001 | NULL, data->o_arg.fmode)) | |
2002 | return ERR_PTR(-EAGAIN); | |
ace9fad4 | 2003 | refcount_inc(&state->count); |
e23008ec AA |
2004 | |
2005 | return state; | |
e23008ec AA |
2006 | } |
2007 | ||
4e2fcac7 TM |
2008 | static struct inode * |
2009 | nfs4_opendata_get_inode(struct nfs4_opendata *data) | |
2010 | { | |
2011 | struct inode *inode; | |
2012 | ||
2013 | switch (data->o_arg.claim) { | |
2014 | case NFS4_OPEN_CLAIM_NULL: | |
2015 | case NFS4_OPEN_CLAIM_DELEGATE_CUR: | |
2016 | case NFS4_OPEN_CLAIM_DELEGATE_PREV: | |
2017 | if (!(data->f_attr.valid & NFS_ATTR_FATTR)) | |
2018 | return ERR_PTR(-EAGAIN); | |
2019 | inode = nfs_fhget(data->dir->d_sb, &data->o_res.fh, | |
2020 | &data->f_attr, data->f_label); | |
2021 | break; | |
2022 | default: | |
2023 | inode = d_inode(data->dentry); | |
2024 | ihold(inode); | |
2025 | nfs_refresh_inode(inode, &data->f_attr); | |
2026 | } | |
2027 | return inode; | |
2028 | } | |
2029 | ||
e23008ec | 2030 | static struct nfs4_state * |
75e8c48b | 2031 | nfs4_opendata_find_nfs4_state(struct nfs4_opendata *data) |
24ac23ab | 2032 | { |
75e8c48b | 2033 | struct nfs4_state *state; |
24ac23ab | 2034 | struct inode *inode; |
75e8c48b TM |
2035 | |
2036 | inode = nfs4_opendata_get_inode(data); | |
2037 | if (IS_ERR(inode)) | |
2038 | return ERR_CAST(inode); | |
2039 | if (data->state != NULL && data->state->inode == inode) { | |
2040 | state = data->state; | |
ace9fad4 | 2041 | refcount_inc(&state->count); |
75e8c48b TM |
2042 | } else |
2043 | state = nfs4_get_open_state(inode, data->owner); | |
2044 | iput(inode); | |
2045 | if (state == NULL) | |
2046 | state = ERR_PTR(-ENOMEM); | |
2047 | return state; | |
2048 | } | |
2049 | ||
2050 | static struct nfs4_state * | |
2051 | _nfs4_opendata_to_nfs4_state(struct nfs4_opendata *data) | |
2052 | { | |
2053 | struct nfs4_state *state; | |
24ac23ab | 2054 | |
aac00a8d | 2055 | if (!data->rpc_done) { |
6ee41268 | 2056 | state = nfs4_try_open_cached(data); |
9759b0fb | 2057 | trace_nfs4_cached_open(data->state); |
aac00a8d TM |
2058 | goto out; |
2059 | } | |
2060 | ||
75e8c48b TM |
2061 | state = nfs4_opendata_find_nfs4_state(data); |
2062 | if (IS_ERR(state)) | |
2063 | goto out; | |
2064 | ||
e23008ec AA |
2065 | if (data->o_res.delegation_type != 0) |
2066 | nfs4_opendata_check_deleg(data, state); | |
e3c8dc76 TM |
2067 | if (!update_open_stateid(state, &data->o_res.stateid, |
2068 | NULL, data->o_arg.fmode)) { | |
2069 | nfs4_put_open_state(state); | |
2070 | state = ERR_PTR(-EAGAIN); | |
2071 | } | |
aac00a8d | 2072 | out: |
7aa262b5 | 2073 | nfs_release_seqid(data->o_arg.seqid); |
24ac23ab TM |
2074 | return state; |
2075 | } | |
2076 | ||
e23008ec AA |
2077 | static struct nfs4_state * |
2078 | nfs4_opendata_to_nfs4_state(struct nfs4_opendata *data) | |
2079 | { | |
2e80dbe7 TM |
2080 | struct nfs4_state *ret; |
2081 | ||
e23008ec | 2082 | if (data->o_arg.claim == NFS4_OPEN_CLAIM_PREVIOUS) |
2e80dbe7 TM |
2083 | ret =_nfs4_opendata_reclaim_to_nfs4_state(data); |
2084 | else | |
2085 | ret = _nfs4_opendata_to_nfs4_state(data); | |
2086 | nfs4_sequence_free_slot(&data->o_res.seq_res); | |
2087 | return ret; | |
e23008ec AA |
2088 | } |
2089 | ||
0de43976 TM |
2090 | static struct nfs_open_context * |
2091 | nfs4_state_find_open_context_mode(struct nfs4_state *state, fmode_t mode) | |
864472e9 TM |
2092 | { |
2093 | struct nfs_inode *nfsi = NFS_I(state->inode); | |
2094 | struct nfs_open_context *ctx; | |
2095 | ||
0de43976 TM |
2096 | rcu_read_lock(); |
2097 | list_for_each_entry_rcu(ctx, &nfsi->open_files, list) { | |
864472e9 TM |
2098 | if (ctx->state != state) |
2099 | continue; | |
0de43976 TM |
2100 | if ((ctx->mode & mode) != mode) |
2101 | continue; | |
2102 | if (!get_nfs_open_context(ctx)) | |
2103 | continue; | |
2104 | rcu_read_unlock(); | |
864472e9 TM |
2105 | return ctx; |
2106 | } | |
0de43976 | 2107 | rcu_read_unlock(); |
864472e9 TM |
2108 | return ERR_PTR(-ENOENT); |
2109 | } | |
2110 | ||
0de43976 TM |
2111 | static struct nfs_open_context * |
2112 | nfs4_state_find_open_context(struct nfs4_state *state) | |
2113 | { | |
2114 | struct nfs_open_context *ctx; | |
2115 | ||
2116 | ctx = nfs4_state_find_open_context_mode(state, FMODE_READ|FMODE_WRITE); | |
2117 | if (!IS_ERR(ctx)) | |
2118 | return ctx; | |
2119 | ctx = nfs4_state_find_open_context_mode(state, FMODE_WRITE); | |
2120 | if (!IS_ERR(ctx)) | |
2121 | return ctx; | |
2122 | return nfs4_state_find_open_context_mode(state, FMODE_READ); | |
2123 | } | |
2124 | ||
4a1c0893 TM |
2125 | static struct nfs4_opendata *nfs4_open_recoverdata_alloc(struct nfs_open_context *ctx, |
2126 | struct nfs4_state *state, enum open_claim_type4 claim) | |
6f220ed5 TM |
2127 | { |
2128 | struct nfs4_opendata *opendata; | |
2129 | ||
4a1c0893 | 2130 | opendata = nfs4_opendata_alloc(ctx->dentry, state->owner, 0, 0, |
8fd1ab74 | 2131 | NULL, claim, GFP_NOFS); |
6f220ed5 TM |
2132 | if (opendata == NULL) |
2133 | return ERR_PTR(-ENOMEM); | |
2134 | opendata->state = state; | |
ace9fad4 | 2135 | refcount_inc(&state->count); |
6f220ed5 TM |
2136 | return opendata; |
2137 | } | |
2138 | ||
24311f88 TM |
2139 | static int nfs4_open_recover_helper(struct nfs4_opendata *opendata, |
2140 | fmode_t fmode) | |
864472e9 | 2141 | { |
2ced46c2 | 2142 | struct nfs4_state *newstate; |
864472e9 TM |
2143 | int ret; |
2144 | ||
24311f88 | 2145 | if (!nfs4_mode_match_open_stateid(opendata->state, fmode)) |
39f897fd | 2146 | return 0; |
dc0b027d TM |
2147 | opendata->o_arg.open_flags = 0; |
2148 | opendata->o_arg.fmode = fmode; | |
be36e185 TM |
2149 | opendata->o_arg.share_access = nfs4_map_atomic_open_share( |
2150 | NFS_SB(opendata->dentry->d_sb), | |
2151 | fmode, 0); | |
2ced46c2 TM |
2152 | memset(&opendata->o_res, 0, sizeof(opendata->o_res)); |
2153 | memset(&opendata->c_res, 0, sizeof(opendata->c_res)); | |
2154 | nfs4_init_opendata_res(opendata); | |
b257957e | 2155 | ret = _nfs4_recover_proc_open(opendata); |
864472e9 TM |
2156 | if (ret != 0) |
2157 | return ret; | |
2ced46c2 | 2158 | newstate = nfs4_opendata_to_nfs4_state(opendata); |
1b370bc2 TM |
2159 | if (IS_ERR(newstate)) |
2160 | return PTR_ERR(newstate); | |
24311f88 TM |
2161 | if (newstate != opendata->state) |
2162 | ret = -ESTALE; | |
643168c2 | 2163 | nfs4_close_state(newstate, fmode); |
24311f88 | 2164 | return ret; |
864472e9 TM |
2165 | } |
2166 | ||
2167 | static int nfs4_open_recover(struct nfs4_opendata *opendata, struct nfs4_state *state) | |
2168 | { | |
864472e9 TM |
2169 | int ret; |
2170 | ||
2171 | /* memory barrier prior to reading state->n_* */ | |
2172 | smp_rmb(); | |
24311f88 TM |
2173 | ret = nfs4_open_recover_helper(opendata, FMODE_READ|FMODE_WRITE); |
2174 | if (ret != 0) | |
2175 | return ret; | |
2176 | ret = nfs4_open_recover_helper(opendata, FMODE_WRITE); | |
2177 | if (ret != 0) | |
2178 | return ret; | |
2179 | ret = nfs4_open_recover_helper(opendata, FMODE_READ); | |
2180 | if (ret != 0) | |
2181 | return ret; | |
1ac7e2fd TM |
2182 | /* |
2183 | * We may have performed cached opens for all three recoveries. | |
2184 | * Check if we need to update the current stateid. | |
2185 | */ | |
2186 | if (test_bit(NFS_DELEGATED_STATE, &state->flags) == 0 && | |
f597c537 | 2187 | !nfs4_stateid_match(&state->stateid, &state->open_stateid)) { |
8bda4e4c | 2188 | write_seqlock(&state->seqlock); |
1ac7e2fd | 2189 | if (test_bit(NFS_DELEGATED_STATE, &state->flags) == 0) |
f597c537 | 2190 | nfs4_stateid_copy(&state->stateid, &state->open_stateid); |
8bda4e4c | 2191 | write_sequnlock(&state->seqlock); |
1ac7e2fd | 2192 | } |
864472e9 TM |
2193 | return 0; |
2194 | } | |
2195 | ||
1da177e4 LT |
2196 | /* |
2197 | * OPEN_RECLAIM: | |
2198 | * reclaim state on the server after a reboot. | |
1da177e4 | 2199 | */ |
539cd03a | 2200 | static int _nfs4_do_open_reclaim(struct nfs_open_context *ctx, struct nfs4_state *state) |
1da177e4 | 2201 | { |
1ac7e2fd | 2202 | struct nfs_delegation *delegation; |
864472e9 | 2203 | struct nfs4_opendata *opendata; |
dc0b027d | 2204 | fmode_t delegation_type = 0; |
1da177e4 LT |
2205 | int status; |
2206 | ||
4a1c0893 TM |
2207 | opendata = nfs4_open_recoverdata_alloc(ctx, state, |
2208 | NFS4_OPEN_CLAIM_PREVIOUS); | |
6f220ed5 TM |
2209 | if (IS_ERR(opendata)) |
2210 | return PTR_ERR(opendata); | |
1ac7e2fd TM |
2211 | rcu_read_lock(); |
2212 | delegation = rcu_dereference(NFS_I(state->inode)->delegation); | |
15c831bf | 2213 | if (delegation != NULL && test_bit(NFS_DELEGATION_NEED_RECLAIM, &delegation->flags) != 0) |
65bbf6bd | 2214 | delegation_type = delegation->type; |
1ac7e2fd | 2215 | rcu_read_unlock(); |
864472e9 TM |
2216 | opendata->o_arg.u.delegation_type = delegation_type; |
2217 | status = nfs4_open_recover(opendata, state); | |
c6d00e63 | 2218 | nfs4_opendata_put(opendata); |
1da177e4 LT |
2219 | return status; |
2220 | } | |
2221 | ||
539cd03a | 2222 | static int nfs4_do_open_reclaim(struct nfs_open_context *ctx, struct nfs4_state *state) |
1da177e4 LT |
2223 | { |
2224 | struct nfs_server *server = NFS_SERVER(state->inode); | |
2225 | struct nfs4_exception exception = { }; | |
2226 | int err; | |
2227 | do { | |
539cd03a | 2228 | err = _nfs4_do_open_reclaim(ctx, state); |
42113a75 | 2229 | trace_nfs4_open_reclaim(ctx, 0, err); |
49f9a0fa TM |
2230 | if (nfs4_clear_cap_atomic_open_v1(server, err, &exception)) |
2231 | continue; | |
168667c4 | 2232 | if (err != -NFS4ERR_DELAY) |
202b50dc TM |
2233 | break; |
2234 | nfs4_handle_exception(server, err, &exception); | |
1da177e4 LT |
2235 | } while (exception.retry); |
2236 | return err; | |
2237 | } | |
2238 | ||
864472e9 TM |
2239 | static int nfs4_open_reclaim(struct nfs4_state_owner *sp, struct nfs4_state *state) |
2240 | { | |
2241 | struct nfs_open_context *ctx; | |
2242 | int ret; | |
2243 | ||
2244 | ctx = nfs4_state_find_open_context(state); | |
2245 | if (IS_ERR(ctx)) | |
91876b13 | 2246 | return -EAGAIN; |
27a30cf6 TM |
2247 | clear_bit(NFS_DELEGATED_STATE, &state->flags); |
2248 | nfs_state_clear_open_state_flags(state); | |
539cd03a | 2249 | ret = nfs4_do_open_reclaim(ctx, state); |
864472e9 TM |
2250 | put_nfs_open_context(ctx); |
2251 | return ret; | |
2252 | } | |
2253 | ||
dce2630c | 2254 | static int nfs4_handle_delegation_recall_error(struct nfs_server *server, struct nfs4_state *state, const nfs4_stateid *stateid, struct file_lock *fl, int err) |
1da177e4 | 2255 | { |
be76b5b6 TM |
2256 | switch (err) { |
2257 | default: | |
2258 | printk(KERN_ERR "NFS: %s: unhandled error " | |
2259 | "%d.\n", __func__, err); | |
ffb81717 | 2260 | fallthrough; |
be76b5b6 TM |
2261 | case 0: |
2262 | case -ENOENT: | |
8eee52af | 2263 | case -EAGAIN: |
be76b5b6 | 2264 | case -ESTALE: |
67e7b52d | 2265 | case -ETIMEDOUT: |
be76b5b6 TM |
2266 | break; |
2267 | case -NFS4ERR_BADSESSION: | |
2268 | case -NFS4ERR_BADSLOT: | |
2269 | case -NFS4ERR_BAD_HIGH_SLOT: | |
2270 | case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION: | |
2271 | case -NFS4ERR_DEADSESSION: | |
be76b5b6 TM |
2272 | return -EAGAIN; |
2273 | case -NFS4ERR_STALE_CLIENTID: | |
2274 | case -NFS4ERR_STALE_STATEID: | |
be76b5b6 TM |
2275 | /* Don't recall a delegation if it was lost */ |
2276 | nfs4_schedule_lease_recovery(server->nfs_client); | |
2277 | return -EAGAIN; | |
352297b9 CL |
2278 | case -NFS4ERR_MOVED: |
2279 | nfs4_schedule_migration_recovery(server); | |
2280 | return -EAGAIN; | |
8ef2f8d4 CL |
2281 | case -NFS4ERR_LEASE_MOVED: |
2282 | nfs4_schedule_lease_moved_recovery(server->nfs_client); | |
2283 | return -EAGAIN; | |
be76b5b6 TM |
2284 | case -NFS4ERR_DELEG_REVOKED: |
2285 | case -NFS4ERR_ADMIN_REVOKED: | |
404ea356 | 2286 | case -NFS4ERR_EXPIRED: |
be76b5b6 | 2287 | case -NFS4ERR_BAD_STATEID: |
db4f2e63 | 2288 | case -NFS4ERR_OPENMODE: |
be76b5b6 TM |
2289 | nfs_inode_find_state_and_recover(state->inode, |
2290 | stateid); | |
2291 | nfs4_schedule_stateid_recovery(server, state); | |
869f9dfa | 2292 | return -EAGAIN; |
be76b5b6 TM |
2293 | case -NFS4ERR_DELAY: |
2294 | case -NFS4ERR_GRACE: | |
be76b5b6 TM |
2295 | ssleep(1); |
2296 | return -EAGAIN; | |
db4f2e63 TM |
2297 | case -ENOMEM: |
2298 | case -NFS4ERR_DENIED: | |
dce2630c N |
2299 | if (fl) { |
2300 | struct nfs4_lock_state *lsp = fl->fl_u.nfs4_fl.owner; | |
2301 | if (lsp) | |
2302 | set_bit(NFS_LOCK_LOST, &lsp->ls_flags); | |
2303 | } | |
db4f2e63 | 2304 | return 0; |
be76b5b6 | 2305 | } |
1da177e4 LT |
2306 | return err; |
2307 | } | |
2308 | ||
24311f88 | 2309 | int nfs4_open_delegation_recall(struct nfs_open_context *ctx, |
5eb8d18c | 2310 | struct nfs4_state *state, const nfs4_stateid *stateid) |
db4f2e63 TM |
2311 | { |
2312 | struct nfs_server *server = NFS_SERVER(state->inode); | |
2313 | struct nfs4_opendata *opendata; | |
24311f88 | 2314 | int err = 0; |
db4f2e63 TM |
2315 | |
2316 | opendata = nfs4_open_recoverdata_alloc(ctx, state, | |
2317 | NFS4_OPEN_CLAIM_DELEG_CUR_FH); | |
2318 | if (IS_ERR(opendata)) | |
2319 | return PTR_ERR(opendata); | |
2320 | nfs4_stateid_copy(&opendata->o_arg.u.delegation, stateid); | |
5eb8d18c | 2321 | if (!test_bit(NFS_O_RDWR_STATE, &state->flags)) { |
24311f88 TM |
2322 | err = nfs4_open_recover_helper(opendata, FMODE_READ|FMODE_WRITE); |
2323 | if (err) | |
5eb8d18c TM |
2324 | goto out; |
2325 | } | |
2326 | if (!test_bit(NFS_O_WRONLY_STATE, &state->flags)) { | |
24311f88 TM |
2327 | err = nfs4_open_recover_helper(opendata, FMODE_WRITE); |
2328 | if (err) | |
5eb8d18c TM |
2329 | goto out; |
2330 | } | |
2331 | if (!test_bit(NFS_O_RDONLY_STATE, &state->flags)) { | |
24311f88 | 2332 | err = nfs4_open_recover_helper(opendata, FMODE_READ); |
5eb8d18c TM |
2333 | if (err) |
2334 | goto out; | |
24311f88 | 2335 | } |
5eb8d18c TM |
2336 | nfs_state_clear_delegation(state); |
2337 | out: | |
db4f2e63 | 2338 | nfs4_opendata_put(opendata); |
dce2630c | 2339 | return nfs4_handle_delegation_recall_error(server, state, stateid, NULL, err); |
db4f2e63 TM |
2340 | } |
2341 | ||
be05c860 CL |
2342 | static void nfs4_open_confirm_prepare(struct rpc_task *task, void *calldata) |
2343 | { | |
2344 | struct nfs4_opendata *data = calldata; | |
2345 | ||
7981c8a6 AS |
2346 | nfs4_setup_sequence(data->o_arg.server->nfs_client, |
2347 | &data->c_arg.seq_args, &data->c_res.seq_res, task); | |
be05c860 CL |
2348 | } |
2349 | ||
cdd4e68b TM |
2350 | static void nfs4_open_confirm_done(struct rpc_task *task, void *calldata) |
2351 | { | |
2352 | struct nfs4_opendata *data = calldata; | |
2353 | ||
17ead6c8 | 2354 | nfs40_sequence_done(task, &data->c_res.seq_res); |
be05c860 | 2355 | |
cdd4e68b | 2356 | data->rpc_status = task->tk_status; |
26e976a8 | 2357 | if (data->rpc_status == 0) { |
f597c537 | 2358 | nfs4_stateid_copy(&data->o_res.stateid, &data->c_res.stateid); |
bb22629e | 2359 | nfs_confirm_seqid(&data->owner->so_seqid, 0); |
26e976a8 | 2360 | renew_lease(data->o_res.server, data->timestamp); |
a7a3b1e9 | 2361 | data->rpc_done = true; |
26e976a8 | 2362 | } |
cdd4e68b TM |
2363 | } |
2364 | ||
2365 | static void nfs4_open_confirm_release(void *calldata) | |
2366 | { | |
2367 | struct nfs4_opendata *data = calldata; | |
2368 | struct nfs4_state *state = NULL; | |
2369 | ||
2370 | /* If this request hasn't been cancelled, do nothing */ | |
a7a3b1e9 | 2371 | if (!data->cancelled) |
cdd4e68b TM |
2372 | goto out_free; |
2373 | /* In case of error, no cleanup! */ | |
3e309914 | 2374 | if (!data->rpc_done) |
cdd4e68b | 2375 | goto out_free; |
cdd4e68b | 2376 | state = nfs4_opendata_to_nfs4_state(data); |
1b370bc2 | 2377 | if (!IS_ERR(state)) |
643168c2 | 2378 | nfs4_close_state(state, data->o_arg.fmode); |
cdd4e68b | 2379 | out_free: |
c6d00e63 | 2380 | nfs4_opendata_put(data); |
cdd4e68b TM |
2381 | } |
2382 | ||
2383 | static const struct rpc_call_ops nfs4_open_confirm_ops = { | |
be05c860 | 2384 | .rpc_call_prepare = nfs4_open_confirm_prepare, |
cdd4e68b TM |
2385 | .rpc_call_done = nfs4_open_confirm_done, |
2386 | .rpc_release = nfs4_open_confirm_release, | |
2387 | }; | |
2388 | ||
2389 | /* | |
2390 | * Note: On error, nfs4_proc_open_confirm will free the struct nfs4_opendata | |
2391 | */ | |
2392 | static int _nfs4_proc_open_confirm(struct nfs4_opendata *data) | |
2393 | { | |
2b0143b5 | 2394 | struct nfs_server *server = NFS_SERVER(d_inode(data->dir)); |
cdd4e68b | 2395 | struct rpc_task *task; |
5138fde0 TM |
2396 | struct rpc_message msg = { |
2397 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN_CONFIRM], | |
2398 | .rpc_argp = &data->c_arg, | |
2399 | .rpc_resp = &data->c_res, | |
2400 | .rpc_cred = data->owner->so_cred, | |
2401 | }; | |
c970aa85 TM |
2402 | struct rpc_task_setup task_setup_data = { |
2403 | .rpc_client = server->client, | |
5138fde0 | 2404 | .rpc_message = &msg, |
c970aa85 TM |
2405 | .callback_ops = &nfs4_open_confirm_ops, |
2406 | .callback_data = data, | |
101070ca | 2407 | .workqueue = nfsiod_workqueue, |
61296507 | 2408 | .flags = RPC_TASK_ASYNC | RPC_TASK_CRED_NOREF, |
c970aa85 | 2409 | }; |
1da177e4 LT |
2410 | int status; |
2411 | ||
fba83f34 AS |
2412 | nfs4_init_sequence(&data->c_arg.seq_args, &data->c_res.seq_res, 1, |
2413 | data->is_recover); | |
c6d00e63 | 2414 | kref_get(&data->kref); |
a7a3b1e9 | 2415 | data->rpc_done = false; |
3e309914 | 2416 | data->rpc_status = 0; |
5138fde0 | 2417 | data->timestamp = jiffies; |
c970aa85 | 2418 | task = rpc_run_task(&task_setup_data); |
7a1218a2 | 2419 | if (IS_ERR(task)) |
cdd4e68b | 2420 | return PTR_ERR(task); |
820bf85c | 2421 | status = rpc_wait_for_completion_task(task); |
cdd4e68b | 2422 | if (status != 0) { |
a7a3b1e9 | 2423 | data->cancelled = true; |
cdd4e68b TM |
2424 | smp_wmb(); |
2425 | } else | |
2426 | status = data->rpc_status; | |
e6b3c4db | 2427 | rpc_put_task(task); |
1da177e4 LT |
2428 | return status; |
2429 | } | |
2430 | ||
24ac23ab | 2431 | static void nfs4_open_prepare(struct rpc_task *task, void *calldata) |
1da177e4 | 2432 | { |
24ac23ab TM |
2433 | struct nfs4_opendata *data = calldata; |
2434 | struct nfs4_state_owner *sp = data->owner; | |
549b19cc | 2435 | struct nfs_client *clp = sp->so_server->nfs_client; |
2a606188 | 2436 | enum open_claim_type4 claim = data->o_arg.claim; |
5138fde0 | 2437 | |
24ac23ab | 2438 | if (nfs_wait_on_sequence(data->o_arg.seqid, task) != 0) |
c8da19b9 | 2439 | goto out_wait; |
aac00a8d TM |
2440 | /* |
2441 | * Check if we still need to send an OPEN call, or if we can use | |
2442 | * a delegation instead. | |
2443 | */ | |
2444 | if (data->state != NULL) { | |
2445 | struct nfs_delegation *delegation; | |
2446 | ||
be189f7e TM |
2447 | if (can_open_cached(data->state, data->o_arg.fmode, |
2448 | data->o_arg.open_flags, claim)) | |
6ee41268 | 2449 | goto out_no_action; |
aac00a8d | 2450 | rcu_read_lock(); |
be3df3dd | 2451 | delegation = nfs4_get_valid_delegation(data->state->inode); |
2a606188 | 2452 | if (can_open_delegated(delegation, data->o_arg.fmode, claim)) |
652f89f6 | 2453 | goto unlock_no_action; |
aac00a8d TM |
2454 | rcu_read_unlock(); |
2455 | } | |
95b72eb0 | 2456 | /* Update client id. */ |
549b19cc | 2457 | data->o_arg.clientid = clp->cl_clientid; |
2a606188 TM |
2458 | switch (claim) { |
2459 | default: | |
2460 | break; | |
8188df17 TM |
2461 | case NFS4_OPEN_CLAIM_PREVIOUS: |
2462 | case NFS4_OPEN_CLAIM_DELEG_CUR_FH: | |
2463 | case NFS4_OPEN_CLAIM_DELEG_PREV_FH: | |
e23008ec | 2464 | data->o_arg.open_bitmap = &nfs4_open_noattr_bitmap[0]; |
df561f66 | 2465 | fallthrough; |
8188df17 TM |
2466 | case NFS4_OPEN_CLAIM_FH: |
2467 | task->tk_msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN_NOATTR]; | |
6f220ed5 | 2468 | } |
26e976a8 | 2469 | data->timestamp = jiffies; |
42e1cca7 | 2470 | if (nfs4_setup_sequence(data->o_arg.server->nfs_client, |
d898528c | 2471 | &data->o_arg.seq_args, |
2240a9e2 TM |
2472 | &data->o_res.seq_res, |
2473 | task) != 0) | |
2474 | nfs_release_seqid(data->o_arg.seqid); | |
549b19cc TM |
2475 | |
2476 | /* Set the create mode (note dependency on the session type) */ | |
2477 | data->o_arg.createmode = NFS4_CREATE_UNCHECKED; | |
2478 | if (data->o_arg.open_flags & O_EXCL) { | |
2479 | data->o_arg.createmode = NFS4_CREATE_EXCLUSIVE; | |
2480 | if (nfs4_has_persistent_session(clp)) | |
2481 | data->o_arg.createmode = NFS4_CREATE_GUARDED; | |
2482 | else if (clp->cl_mvops->minor_version > 0) | |
2483 | data->o_arg.createmode = NFS4_CREATE_EXCLUSIVE4_1; | |
2484 | } | |
6ee41268 | 2485 | return; |
652f89f6 | 2486 | unlock_no_action: |
9759b0fb | 2487 | trace_nfs4_cached_open(data->state); |
652f89f6 | 2488 | rcu_read_unlock(); |
6ee41268 TM |
2489 | out_no_action: |
2490 | task->tk_action = NULL; | |
c8da19b9 | 2491 | out_wait: |
b75ad4cd | 2492 | nfs4_sequence_done(task, &data->o_res.seq_res); |
b257957e AB |
2493 | } |
2494 | ||
24ac23ab TM |
2495 | static void nfs4_open_done(struct rpc_task *task, void *calldata) |
2496 | { | |
2497 | struct nfs4_opendata *data = calldata; | |
1da177e4 | 2498 | |
24ac23ab | 2499 | data->rpc_status = task->tk_status; |
d898528c | 2500 | |
2e80dbe7 | 2501 | if (!nfs4_sequence_process(task, &data->o_res.seq_res)) |
14516c3a | 2502 | return; |
d898528c | 2503 | |
24ac23ab | 2504 | if (task->tk_status == 0) { |
807d66d8 TM |
2505 | if (data->o_res.f_attr->valid & NFS_ATTR_FATTR_TYPE) { |
2506 | switch (data->o_res.f_attr->mode & S_IFMT) { | |
6f926b5b TM |
2507 | case S_IFREG: |
2508 | break; | |
2509 | case S_IFLNK: | |
24ac23ab | 2510 | data->rpc_status = -ELOOP; |
6f926b5b TM |
2511 | break; |
2512 | case S_IFDIR: | |
24ac23ab | 2513 | data->rpc_status = -EISDIR; |
6f926b5b TM |
2514 | break; |
2515 | default: | |
24ac23ab | 2516 | data->rpc_status = -ENOTDIR; |
807d66d8 | 2517 | } |
6f926b5b | 2518 | } |
26e976a8 | 2519 | renew_lease(data->o_res.server, data->timestamp); |
0f9f95e0 TM |
2520 | if (!(data->o_res.rflags & NFS4_OPEN_RESULT_CONFIRM)) |
2521 | nfs_confirm_seqid(&data->owner->so_seqid, 0); | |
6f926b5b | 2522 | } |
a7a3b1e9 | 2523 | data->rpc_done = true; |
24ac23ab | 2524 | } |
6f926b5b | 2525 | |
24ac23ab TM |
2526 | static void nfs4_open_release(void *calldata) |
2527 | { | |
2528 | struct nfs4_opendata *data = calldata; | |
2529 | struct nfs4_state *state = NULL; | |
2530 | ||
2531 | /* If this request hasn't been cancelled, do nothing */ | |
a7a3b1e9 | 2532 | if (!data->cancelled) |
24ac23ab TM |
2533 | goto out_free; |
2534 | /* In case of error, no cleanup! */ | |
3e309914 | 2535 | if (data->rpc_status != 0 || !data->rpc_done) |
24ac23ab TM |
2536 | goto out_free; |
2537 | /* In case we need an open_confirm, no cleanup! */ | |
2538 | if (data->o_res.rflags & NFS4_OPEN_RESULT_CONFIRM) | |
2539 | goto out_free; | |
24ac23ab | 2540 | state = nfs4_opendata_to_nfs4_state(data); |
1b370bc2 | 2541 | if (!IS_ERR(state)) |
643168c2 | 2542 | nfs4_close_state(state, data->o_arg.fmode); |
24ac23ab | 2543 | out_free: |
c6d00e63 | 2544 | nfs4_opendata_put(data); |
24ac23ab TM |
2545 | } |
2546 | ||
2547 | static const struct rpc_call_ops nfs4_open_ops = { | |
2548 | .rpc_call_prepare = nfs4_open_prepare, | |
2549 | .rpc_call_done = nfs4_open_done, | |
2550 | .rpc_release = nfs4_open_release, | |
2551 | }; | |
2552 | ||
3b65a30d FI |
2553 | static int nfs4_run_open_task(struct nfs4_opendata *data, |
2554 | struct nfs_open_context *ctx) | |
24ac23ab | 2555 | { |
2b0143b5 | 2556 | struct inode *dir = d_inode(data->dir); |
24ac23ab TM |
2557 | struct nfs_server *server = NFS_SERVER(dir); |
2558 | struct nfs_openargs *o_arg = &data->o_arg; | |
2559 | struct nfs_openres *o_res = &data->o_res; | |
2560 | struct rpc_task *task; | |
5138fde0 TM |
2561 | struct rpc_message msg = { |
2562 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN], | |
2563 | .rpc_argp = o_arg, | |
2564 | .rpc_resp = o_res, | |
2565 | .rpc_cred = data->owner->so_cred, | |
2566 | }; | |
c970aa85 TM |
2567 | struct rpc_task_setup task_setup_data = { |
2568 | .rpc_client = server->client, | |
5138fde0 | 2569 | .rpc_message = &msg, |
c970aa85 TM |
2570 | .callback_ops = &nfs4_open_ops, |
2571 | .callback_data = data, | |
101070ca | 2572 | .workqueue = nfsiod_workqueue, |
61296507 | 2573 | .flags = RPC_TASK_ASYNC | RPC_TASK_CRED_NOREF, |
c970aa85 | 2574 | }; |
24ac23ab TM |
2575 | int status; |
2576 | ||
85e39fee OK |
2577 | if (server->nfs_client->cl_minorversion) |
2578 | task_setup_data.flags |= RPC_TASK_MOVEABLE; | |
2579 | ||
c6d00e63 | 2580 | kref_get(&data->kref); |
a7a3b1e9 | 2581 | data->rpc_done = false; |
3e309914 | 2582 | data->rpc_status = 0; |
a7a3b1e9 BC |
2583 | data->cancelled = false; |
2584 | data->is_recover = false; | |
3b65a30d FI |
2585 | if (!ctx) { |
2586 | nfs4_init_sequence(&o_arg->seq_args, &o_res->seq_res, 1, 1); | |
a7a3b1e9 | 2587 | data->is_recover = true; |
67e7b52d | 2588 | task_setup_data.flags |= RPC_TASK_TIMEOUT; |
2409a976 | 2589 | } else { |
3b65a30d | 2590 | nfs4_init_sequence(&o_arg->seq_args, &o_res->seq_res, 1, 0); |
2409a976 FI |
2591 | pnfs_lgopen_prepare(data, ctx); |
2592 | } | |
c970aa85 | 2593 | task = rpc_run_task(&task_setup_data); |
d9b67e1e AS |
2594 | if (IS_ERR(task)) |
2595 | return PTR_ERR(task); | |
820bf85c | 2596 | status = rpc_wait_for_completion_task(task); |
d9b67e1e | 2597 | if (status != 0) { |
a7a3b1e9 | 2598 | data->cancelled = true; |
d9b67e1e AS |
2599 | smp_wmb(); |
2600 | } else | |
2601 | status = data->rpc_status; | |
2602 | rpc_put_task(task); | |
b257957e AB |
2603 | |
2604 | return status; | |
2605 | } | |
2606 | ||
2607 | static int _nfs4_recover_proc_open(struct nfs4_opendata *data) | |
2608 | { | |
2b0143b5 | 2609 | struct inode *dir = d_inode(data->dir); |
b257957e | 2610 | struct nfs_openres *o_res = &data->o_res; |
d9b67e1e | 2611 | int status; |
b257957e | 2612 | |
3b65a30d | 2613 | status = nfs4_run_open_task(data, NULL); |
b257957e AB |
2614 | if (status != 0 || !data->rpc_done) |
2615 | return status; | |
2616 | ||
6926afd1 TM |
2617 | nfs_fattr_map_and_free_names(NFS_SERVER(dir), &data->f_attr); |
2618 | ||
d7e98258 | 2619 | if (o_res->rflags & NFS4_OPEN_RESULT_CONFIRM) |
b257957e | 2620 | status = _nfs4_proc_open_confirm(data); |
b257957e AB |
2621 | |
2622 | return status; | |
2623 | } | |
2624 | ||
f3792d63 TM |
2625 | /* |
2626 | * Additional permission checks in order to distinguish between an | |
2627 | * open for read, and an open for execute. This works around the | |
2628 | * fact that NFSv4 OPEN treats read and execute permissions as being | |
2629 | * the same. | |
2630 | * Note that in the non-execute case, we want to turn off permission | |
2631 | * checking if we just created a new file (POSIX open() semantics). | |
2632 | */ | |
a52458b4 | 2633 | static int nfs4_opendata_access(const struct cred *cred, |
6168f62c | 2634 | struct nfs4_opendata *opendata, |
f8d9a897 WAA |
2635 | struct nfs4_state *state, fmode_t fmode, |
2636 | int openflags) | |
6168f62c WAA |
2637 | { |
2638 | struct nfs_access_entry cache; | |
1e6f2095 | 2639 | u32 mask, flags; |
6168f62c WAA |
2640 | |
2641 | /* access call failed or for some reason the server doesn't | |
2642 | * support any access modes -- defer access call until later */ | |
2643 | if (opendata->o_res.access_supported == 0) | |
2644 | return 0; | |
2645 | ||
2646 | mask = 0; | |
f3792d63 TM |
2647 | /* |
2648 | * Use openflags to check for exec, because fmode won't | |
2649 | * always have FMODE_EXEC set when file open for exec. | |
2650 | */ | |
f8d9a897 WAA |
2651 | if (openflags & __FMODE_EXEC) { |
2652 | /* ONLY check for exec rights */ | |
1e6f2095 AS |
2653 | if (S_ISDIR(state->inode->i_mode)) |
2654 | mask = NFS4_ACCESS_LOOKUP; | |
2655 | else | |
2656 | mask = NFS4_ACCESS_EXECUTE; | |
f3792d63 | 2657 | } else if ((fmode & FMODE_READ) && !opendata->file_created) |
1e6f2095 | 2658 | mask = NFS4_ACCESS_READ; |
6168f62c WAA |
2659 | |
2660 | cache.cred = cred; | |
6168f62c WAA |
2661 | nfs_access_set_mask(&cache, opendata->o_res.access_result); |
2662 | nfs_access_add_cache(state->inode, &cache); | |
2663 | ||
1e6f2095 AS |
2664 | flags = NFS4_ACCESS_READ | NFS4_ACCESS_EXECUTE | NFS4_ACCESS_LOOKUP; |
2665 | if ((mask & ~cache.mask & flags) == 0) | |
6168f62c WAA |
2666 | return 0; |
2667 | ||
998f40b5 | 2668 | return -EACCES; |
6168f62c WAA |
2669 | } |
2670 | ||
b257957e AB |
2671 | /* |
2672 | * Note: On error, nfs4_proc_open will free the struct nfs4_opendata | |
2673 | */ | |
3b65a30d FI |
2674 | static int _nfs4_proc_open(struct nfs4_opendata *data, |
2675 | struct nfs_open_context *ctx) | |
b257957e | 2676 | { |
2b0143b5 | 2677 | struct inode *dir = d_inode(data->dir); |
b257957e AB |
2678 | struct nfs_server *server = NFS_SERVER(dir); |
2679 | struct nfs_openargs *o_arg = &data->o_arg; | |
2680 | struct nfs_openres *o_res = &data->o_res; | |
2681 | int status; | |
2682 | ||
3b65a30d | 2683 | status = nfs4_run_open_task(data, ctx); |
08ef7bd3 TM |
2684 | if (!data->rpc_done) |
2685 | return status; | |
2686 | if (status != 0) { | |
2687 | if (status == -NFS4ERR_BADNAME && | |
2688 | !(o_arg->open_flags & O_CREAT)) | |
2689 | return -ENOENT; | |
24ac23ab | 2690 | return status; |
08ef7bd3 | 2691 | } |
24ac23ab | 2692 | |
6926afd1 TM |
2693 | nfs_fattr_map_and_free_names(server, &data->f_attr); |
2694 | ||
5bc2afc2 | 2695 | if (o_arg->open_flags & O_CREAT) { |
5bc2afc2 | 2696 | if (o_arg->open_flags & O_EXCL) |
a7a3b1e9 | 2697 | data->file_created = true; |
5bc2afc2 | 2698 | else if (o_res->cinfo.before != o_res->cinfo.after) |
a7a3b1e9 | 2699 | data->file_created = true; |
1eb5d98f JL |
2700 | if (data->file_created || |
2701 | inode_peek_iversion_raw(dir) != o_res->cinfo.after) | |
1b523ca9 FL |
2702 | nfs4_update_changeattr(dir, &o_res->cinfo, |
2703 | o_res->f_attr->time_start, | |
2704 | NFS_INO_INVALID_DATA); | |
5bc2afc2 | 2705 | } |
0df5dd4a TM |
2706 | if ((o_res->rflags & NFS4_OPEN_RESULT_LOCKTYPE_POSIX) == 0) |
2707 | server->caps &= ~NFS_CAP_POSIX_LOCK; | |
1da177e4 | 2708 | if(o_res->rflags & NFS4_OPEN_RESULT_CONFIRM) { |
cdd4e68b | 2709 | status = _nfs4_proc_open_confirm(data); |
1da177e4 | 2710 | if (status != 0) |
24ac23ab | 2711 | return status; |
1da177e4 | 2712 | } |
56e0d71e TM |
2713 | if (!(o_res->f_attr->valid & NFS_ATTR_FATTR)) { |
2714 | nfs4_sequence_free_slot(&o_res->seq_res); | |
a841b54d TM |
2715 | nfs4_proc_getattr(server, &o_res->fh, o_res->f_attr, |
2716 | o_res->f_label, NULL); | |
56e0d71e | 2717 | } |
24ac23ab | 2718 | return 0; |
1da177e4 LT |
2719 | } |
2720 | ||
1da177e4 LT |
2721 | /* |
2722 | * OPEN_EXPIRED: | |
2723 | * reclaim state on the server after a network partition. | |
2724 | * Assumes caller holds the appropriate lock | |
2725 | */ | |
539cd03a | 2726 | static int _nfs4_open_expired(struct nfs_open_context *ctx, struct nfs4_state *state) |
1da177e4 | 2727 | { |
e56e0b78 | 2728 | struct nfs4_opendata *opendata; |
864472e9 | 2729 | int ret; |
1da177e4 | 2730 | |
4a1c0893 | 2731 | opendata = nfs4_open_recoverdata_alloc(ctx, state, |
49f9a0fa | 2732 | NFS4_OPEN_CLAIM_FH); |
6f220ed5 TM |
2733 | if (IS_ERR(opendata)) |
2734 | return PTR_ERR(opendata); | |
864472e9 | 2735 | ret = nfs4_open_recover(opendata, state); |
35d05778 | 2736 | if (ret == -ESTALE) |
3d4ff43d | 2737 | d_drop(ctx->dentry); |
c6d00e63 | 2738 | nfs4_opendata_put(opendata); |
864472e9 | 2739 | return ret; |
1da177e4 LT |
2740 | } |
2741 | ||
a9ed2e25 | 2742 | static int nfs4_do_open_expired(struct nfs_open_context *ctx, struct nfs4_state *state) |
202b50dc | 2743 | { |
539cd03a | 2744 | struct nfs_server *server = NFS_SERVER(state->inode); |
202b50dc TM |
2745 | struct nfs4_exception exception = { }; |
2746 | int err; | |
2747 | ||
2748 | do { | |
539cd03a | 2749 | err = _nfs4_open_expired(ctx, state); |
42113a75 | 2750 | trace_nfs4_open_expired(ctx, 0, err); |
49f9a0fa TM |
2751 | if (nfs4_clear_cap_atomic_open_v1(server, err, &exception)) |
2752 | continue; | |
a9ed2e25 TM |
2753 | switch (err) { |
2754 | default: | |
2755 | goto out; | |
2756 | case -NFS4ERR_GRACE: | |
2757 | case -NFS4ERR_DELAY: | |
2758 | nfs4_handle_exception(server, err, &exception); | |
2759 | err = 0; | |
2760 | } | |
202b50dc | 2761 | } while (exception.retry); |
a9ed2e25 | 2762 | out: |
202b50dc TM |
2763 | return err; |
2764 | } | |
2765 | ||
1da177e4 LT |
2766 | static int nfs4_open_expired(struct nfs4_state_owner *sp, struct nfs4_state *state) |
2767 | { | |
1da177e4 | 2768 | struct nfs_open_context *ctx; |
864472e9 | 2769 | int ret; |
1da177e4 | 2770 | |
864472e9 TM |
2771 | ctx = nfs4_state_find_open_context(state); |
2772 | if (IS_ERR(ctx)) | |
91876b13 | 2773 | return -EAGAIN; |
539cd03a | 2774 | ret = nfs4_do_open_expired(ctx, state); |
864472e9 TM |
2775 | put_nfs_open_context(ctx); |
2776 | return ret; | |
1da177e4 LT |
2777 | } |
2778 | ||
41020b67 TM |
2779 | static void nfs_finish_clear_delegation_stateid(struct nfs4_state *state, |
2780 | const nfs4_stateid *stateid) | |
4dfd4f7a | 2781 | { |
41020b67 | 2782 | nfs_remove_bad_delegation(state->inode, stateid); |
9f0c5124 | 2783 | nfs_state_clear_delegation(state); |
4dfd4f7a TM |
2784 | } |
2785 | ||
2786 | static void nfs40_clear_delegation_stateid(struct nfs4_state *state) | |
2787 | { | |
2788 | if (rcu_access_pointer(NFS_I(state->inode)->delegation) != NULL) | |
41020b67 | 2789 | nfs_finish_clear_delegation_stateid(state, NULL); |
4dfd4f7a TM |
2790 | } |
2791 | ||
2792 | static int nfs40_open_expired(struct nfs4_state_owner *sp, struct nfs4_state *state) | |
2793 | { | |
2794 | /* NFSv4.0 doesn't allow for delegation recovery on open expire */ | |
2795 | nfs40_clear_delegation_stateid(state); | |
27a30cf6 | 2796 | nfs_state_clear_open_state_flags(state); |
4dfd4f7a TM |
2797 | return nfs4_open_expired(sp, state); |
2798 | } | |
2799 | ||
45870d69 TM |
2800 | static int nfs40_test_and_free_expired_stateid(struct nfs_server *server, |
2801 | nfs4_stateid *stateid, | |
a52458b4 | 2802 | const struct cred *cred) |
45870d69 TM |
2803 | { |
2804 | return -NFS4ERR_BAD_STATEID; | |
2805 | } | |
2806 | ||
f062eb6c | 2807 | #if defined(CONFIG_NFS_V4_1) |
4586f6e2 TM |
2808 | static int nfs41_test_and_free_expired_stateid(struct nfs_server *server, |
2809 | nfs4_stateid *stateid, | |
a52458b4 | 2810 | const struct cred *cred) |
4586f6e2 TM |
2811 | { |
2812 | int status; | |
2813 | ||
f7a62ada TM |
2814 | switch (stateid->type) { |
2815 | default: | |
2816 | break; | |
2817 | case NFS4_INVALID_STATEID_TYPE: | |
2818 | case NFS4_SPECIAL_STATEID_TYPE: | |
2819 | return -NFS4ERR_BAD_STATEID; | |
2820 | case NFS4_REVOKED_STATEID_TYPE: | |
2821 | goto out_free; | |
2822 | } | |
4586f6e2 | 2823 | |
f7a62ada | 2824 | status = nfs41_test_stateid(server, stateid, cred); |
4586f6e2 TM |
2825 | switch (status) { |
2826 | case -NFS4ERR_EXPIRED: | |
2827 | case -NFS4ERR_ADMIN_REVOKED: | |
2828 | case -NFS4ERR_DELEG_REVOKED: | |
f7a62ada TM |
2829 | break; |
2830 | default: | |
4586f6e2 TM |
2831 | return status; |
2832 | } | |
f7a62ada TM |
2833 | out_free: |
2834 | /* Ack the revoked state to the server */ | |
f0b0bf88 | 2835 | nfs41_free_stateid(server, stateid, cred, true); |
f7a62ada | 2836 | return -NFS4ERR_EXPIRED; |
4586f6e2 TM |
2837 | } |
2838 | ||
27a30cf6 | 2839 | static int nfs41_check_delegation_stateid(struct nfs4_state *state) |
f062eb6c | 2840 | { |
f062eb6c | 2841 | struct nfs_server *server = NFS_SERVER(state->inode); |
0c116cad | 2842 | nfs4_stateid stateid; |
ab7cb0df | 2843 | struct nfs_delegation *delegation; |
a52458b4 | 2844 | const struct cred *cred = NULL; |
27a30cf6 | 2845 | int status, ret = NFS_OK; |
3e60ffdd | 2846 | |
ab7cb0df TM |
2847 | /* Get the delegation credential for use by test/free_stateid */ |
2848 | rcu_read_lock(); | |
2849 | delegation = rcu_dereference(NFS_I(state->inode)->delegation); | |
0c116cad | 2850 | if (delegation == NULL) { |
ab7cb0df | 2851 | rcu_read_unlock(); |
9f0c5124 | 2852 | nfs_state_clear_delegation(state); |
27a30cf6 | 2853 | return NFS_OK; |
0c116cad TM |
2854 | } |
2855 | ||
fc51b1cf | 2856 | spin_lock(&delegation->lock); |
0c116cad | 2857 | nfs4_stateid_copy(&stateid, &delegation->stateid); |
0c116cad | 2858 | |
994b15b9 TM |
2859 | if (!test_and_clear_bit(NFS_DELEGATION_TEST_EXPIRED, |
2860 | &delegation->flags)) { | |
fc51b1cf | 2861 | spin_unlock(&delegation->lock); |
4c8e5447 | 2862 | rcu_read_unlock(); |
27a30cf6 | 2863 | return NFS_OK; |
4c8e5447 | 2864 | } |
0c116cad | 2865 | |
a52458b4 N |
2866 | if (delegation->cred) |
2867 | cred = get_cred(delegation->cred); | |
fc51b1cf | 2868 | spin_unlock(&delegation->lock); |
0c116cad | 2869 | rcu_read_unlock(); |
4586f6e2 | 2870 | status = nfs41_test_and_free_expired_stateid(server, &stateid, cred); |
0c116cad | 2871 | trace_nfs4_test_delegation_stateid(state, NULL, status); |
f7a62ada | 2872 | if (status == -NFS4ERR_EXPIRED || status == -NFS4ERR_BAD_STATEID) |
41020b67 | 2873 | nfs_finish_clear_delegation_stateid(state, &stateid); |
27a30cf6 TM |
2874 | else |
2875 | ret = status; | |
ab7cb0df | 2876 | |
8c39a39e | 2877 | put_cred(cred); |
27a30cf6 TM |
2878 | return ret; |
2879 | } | |
2880 | ||
2881 | static void nfs41_delegation_recover_stateid(struct nfs4_state *state) | |
2882 | { | |
2883 | nfs4_stateid tmp; | |
2884 | ||
2885 | if (test_bit(NFS_DELEGATED_STATE, &state->flags) && | |
2886 | nfs4_copy_delegation_stateid(state->inode, state->state, | |
2887 | &tmp, NULL) && | |
2888 | nfs4_stateid_match_other(&state->stateid, &tmp)) | |
2889 | nfs_state_set_delegation(state, &tmp, state->state); | |
2890 | else | |
2891 | nfs_state_clear_delegation(state); | |
3e60ffdd CL |
2892 | } |
2893 | ||
c5896fc8 TM |
2894 | /** |
2895 | * nfs41_check_expired_locks - possibly free a lock stateid | |
2896 | * | |
2897 | * @state: NFSv4 state for an inode | |
2898 | * | |
2899 | * Returns NFS_OK if recovery for this stateid is now finished. | |
2900 | * Otherwise a negative NFS4ERR value is returned. | |
2901 | */ | |
2902 | static int nfs41_check_expired_locks(struct nfs4_state *state) | |
2903 | { | |
2904 | int status, ret = NFS_OK; | |
d75a6a0e | 2905 | struct nfs4_lock_state *lsp, *prev = NULL; |
c5896fc8 TM |
2906 | struct nfs_server *server = NFS_SERVER(state->inode); |
2907 | ||
2908 | if (!test_bit(LK_STATE_IN_USE, &state->flags)) | |
2909 | goto out; | |
d75a6a0e BC |
2910 | |
2911 | spin_lock(&state->state_lock); | |
c5896fc8 TM |
2912 | list_for_each_entry(lsp, &state->lock_states, ls_locks) { |
2913 | if (test_bit(NFS_LOCK_INITIALIZED, &lsp->ls_flags)) { | |
a52458b4 | 2914 | const struct cred *cred = lsp->ls_state->owner->so_cred; |
c5896fc8 | 2915 | |
194bc1f4 | 2916 | refcount_inc(&lsp->ls_count); |
d75a6a0e BC |
2917 | spin_unlock(&state->state_lock); |
2918 | ||
2919 | nfs4_put_lock_state(prev); | |
2920 | prev = lsp; | |
2921 | ||
c5896fc8 TM |
2922 | status = nfs41_test_and_free_expired_stateid(server, |
2923 | &lsp->ls_stateid, | |
2924 | cred); | |
2925 | trace_nfs4_test_lock_stateid(state, lsp, status); | |
2926 | if (status == -NFS4ERR_EXPIRED || | |
2927 | status == -NFS4ERR_BAD_STATEID) { | |
2928 | clear_bit(NFS_LOCK_INITIALIZED, &lsp->ls_flags); | |
67dd4830 | 2929 | lsp->ls_stateid.type = NFS4_INVALID_STATEID_TYPE; |
c5896fc8 TM |
2930 | if (!recover_lost_locks) |
2931 | set_bit(NFS_LOCK_LOST, &lsp->ls_flags); | |
2932 | } else if (status != NFS_OK) { | |
2933 | ret = status; | |
d75a6a0e BC |
2934 | nfs4_put_lock_state(prev); |
2935 | goto out; | |
c5896fc8 | 2936 | } |
d75a6a0e | 2937 | spin_lock(&state->state_lock); |
c5896fc8 | 2938 | } |
d75a6a0e BC |
2939 | } |
2940 | spin_unlock(&state->state_lock); | |
2941 | nfs4_put_lock_state(prev); | |
c5896fc8 TM |
2942 | out: |
2943 | return ret; | |
2944 | } | |
2945 | ||
3e60ffdd CL |
2946 | /** |
2947 | * nfs41_check_open_stateid - possibly free an open stateid | |
2948 | * | |
2949 | * @state: NFSv4 state for an inode | |
2950 | * | |
2951 | * Returns NFS_OK if recovery for this stateid is now finished. | |
2952 | * Otherwise a negative NFS4ERR value is returned. | |
2953 | */ | |
2954 | static int nfs41_check_open_stateid(struct nfs4_state *state) | |
2955 | { | |
2956 | struct nfs_server *server = NFS_SERVER(state->inode); | |
fcb6d9c6 | 2957 | nfs4_stateid *stateid = &state->open_stateid; |
a52458b4 | 2958 | const struct cred *cred = state->owner->so_cred; |
3e60ffdd CL |
2959 | int status; |
2960 | ||
27a30cf6 | 2961 | if (test_bit(NFS_OPEN_STATE, &state->flags) == 0) |
3e60ffdd | 2962 | return -NFS4ERR_BAD_STATEID; |
4586f6e2 | 2963 | status = nfs41_test_and_free_expired_stateid(server, stateid, cred); |
08cb47fa | 2964 | trace_nfs4_test_open_stateid(state, NULL, status); |
f7a62ada | 2965 | if (status == -NFS4ERR_EXPIRED || status == -NFS4ERR_BAD_STATEID) { |
27a30cf6 | 2966 | nfs_state_clear_open_state_flags(state); |
67dd4830 | 2967 | stateid->type = NFS4_INVALID_STATEID_TYPE; |
8a64c4ef | 2968 | return status; |
c0ca0e59 | 2969 | } |
8a64c4ef TM |
2970 | if (nfs_open_stateid_recover_openmode(state)) |
2971 | return -NFS4ERR_OPENMODE; | |
2972 | return NFS_OK; | |
b01dd1d8 BS |
2973 | } |
2974 | ||
2975 | static int nfs41_open_expired(struct nfs4_state_owner *sp, struct nfs4_state *state) | |
2976 | { | |
eb64cf96 | 2977 | int status; |
b01dd1d8 | 2978 | |
27a30cf6 TM |
2979 | status = nfs41_check_delegation_stateid(state); |
2980 | if (status != NFS_OK) | |
2981 | return status; | |
2982 | nfs41_delegation_recover_stateid(state); | |
2983 | ||
c5896fc8 TM |
2984 | status = nfs41_check_expired_locks(state); |
2985 | if (status != NFS_OK) | |
2986 | return status; | |
3e60ffdd | 2987 | status = nfs41_check_open_stateid(state); |
eb64cf96 CL |
2988 | if (status != NFS_OK) |
2989 | status = nfs4_open_expired(sp, state); | |
2990 | return status; | |
f062eb6c BS |
2991 | } |
2992 | #endif | |
2993 | ||
aa53ed54 JL |
2994 | /* |
2995 | * on an EXCLUSIVE create, the server should send back a bitmask with FATTR4-* | |
2996 | * fields corresponding to attributes that were used to store the verifier. | |
2997 | * Make sure we clobber those fields in the later setattr call | |
2998 | */ | |
609339c1 | 2999 | static unsigned nfs4_exclusive_attrset(struct nfs4_opendata *opendata, |
5334c5bd | 3000 | struct iattr *sattr, struct nfs4_label **label) |
aa53ed54 | 3001 | { |
609339c1 TM |
3002 | const __u32 *bitmask = opendata->o_arg.server->exclcreat_bitmask; |
3003 | __u32 attrset[3]; | |
3004 | unsigned ret; | |
3005 | unsigned i; | |
5334c5bd | 3006 | |
609339c1 TM |
3007 | for (i = 0; i < ARRAY_SIZE(attrset); i++) { |
3008 | attrset[i] = opendata->o_res.attrset[i]; | |
3009 | if (opendata->o_arg.createmode == NFS4_CREATE_EXCLUSIVE4_1) | |
3010 | attrset[i] &= ~bitmask[i]; | |
3011 | } | |
3012 | ||
3013 | ret = (opendata->o_arg.createmode == NFS4_CREATE_EXCLUSIVE) ? | |
3014 | sattr->ia_valid : 0; | |
aa53ed54 | 3015 | |
609339c1 TM |
3016 | if ((attrset[1] & (FATTR4_WORD1_TIME_ACCESS|FATTR4_WORD1_TIME_ACCESS_SET))) { |
3017 | if (sattr->ia_valid & ATTR_ATIME_SET) | |
3018 | ret |= ATTR_ATIME_SET; | |
3019 | else | |
3020 | ret |= ATTR_ATIME; | |
3021 | } | |
5334c5bd | 3022 | |
609339c1 TM |
3023 | if ((attrset[1] & (FATTR4_WORD1_TIME_MODIFY|FATTR4_WORD1_TIME_MODIFY_SET))) { |
3024 | if (sattr->ia_valid & ATTR_MTIME_SET) | |
3025 | ret |= ATTR_MTIME_SET; | |
3026 | else | |
3027 | ret |= ATTR_MTIME; | |
3028 | } | |
5334c5bd | 3029 | |
609339c1 | 3030 | if (!(attrset[2] & FATTR4_WORD2_SECURITY_LABEL)) |
5334c5bd | 3031 | *label = NULL; |
609339c1 | 3032 | return ret; |
aa53ed54 JL |
3033 | } |
3034 | ||
c21443c2 | 3035 | static int _nfs4_open_and_get_state(struct nfs4_opendata *opendata, |
1bf85d8c | 3036 | int flags, struct nfs_open_context *ctx) |
c21443c2 TM |
3037 | { |
3038 | struct nfs4_state_owner *sp = opendata->owner; | |
3039 | struct nfs_server *server = sp->so_server; | |
275bb307 | 3040 | struct dentry *dentry; |
c21443c2 | 3041 | struct nfs4_state *state; |
1bf85d8c | 3042 | fmode_t acc_mode = _nfs4_ctx_to_accessmode(ctx); |
cf5b4059 TM |
3043 | struct inode *dir = d_inode(opendata->dir); |
3044 | unsigned long dir_verifier; | |
c21443c2 TM |
3045 | unsigned int seq; |
3046 | int ret; | |
3047 | ||
3048 | seq = raw_seqcount_begin(&sp->so_reclaim_seqcount); | |
cf5b4059 | 3049 | dir_verifier = nfs_save_change_attribute(dir); |
c21443c2 | 3050 | |
3b65a30d | 3051 | ret = _nfs4_proc_open(opendata, ctx); |
dca78001 | 3052 | if (ret != 0) |
c21443c2 TM |
3053 | goto out; |
3054 | ||
ae55e59d | 3055 | state = _nfs4_opendata_to_nfs4_state(opendata); |
c21443c2 TM |
3056 | ret = PTR_ERR(state); |
3057 | if (IS_ERR(state)) | |
3058 | goto out; | |
a974deee | 3059 | ctx->state = state; |
c21443c2 TM |
3060 | if (server->caps & NFS_CAP_POSIX_LOCK) |
3061 | set_bit(NFS_STATE_POSIX_LOCKS, &state->flags); | |
a8ce377a JL |
3062 | if (opendata->o_res.rflags & NFS4_OPEN_RESULT_MAY_NOTIFY_LOCK) |
3063 | set_bit(NFS_STATE_MAY_NOTIFY_LOCK, &state->flags); | |
c21443c2 | 3064 | |
275bb307 | 3065 | dentry = opendata->dentry; |
2b0143b5 | 3066 | if (d_really_is_negative(dentry)) { |
668d0cd5 | 3067 | struct dentry *alias; |
275bb307 | 3068 | d_drop(dentry); |
668d0cd5 AV |
3069 | alias = d_exact_alias(dentry, state->inode); |
3070 | if (!alias) | |
3071 | alias = d_splice_alias(igrab(state->inode), dentry); | |
3072 | /* d_splice_alias() can't fail here - it's a non-directory */ | |
3073 | if (alias) { | |
275bb307 | 3074 | dput(ctx->dentry); |
668d0cd5 | 3075 | ctx->dentry = dentry = alias; |
275bb307 | 3076 | } |
cf5b4059 TM |
3077 | } |
3078 | ||
3079 | switch(opendata->o_arg.claim) { | |
3080 | default: | |
3081 | break; | |
3082 | case NFS4_OPEN_CLAIM_NULL: | |
3083 | case NFS4_OPEN_CLAIM_DELEGATE_CUR: | |
3084 | case NFS4_OPEN_CLAIM_DELEGATE_PREV: | |
3085 | if (!opendata->rpc_done) | |
3086 | break; | |
3087 | if (opendata->o_res.delegation_type != 0) | |
3088 | dir_verifier = nfs_save_change_attribute(dir); | |
3089 | nfs_set_verifier(dentry, dir_verifier); | |
275bb307 TM |
3090 | } |
3091 | ||
af9b6d75 TM |
3092 | /* Parse layoutget results before we check for access */ |
3093 | pnfs_parse_lgopen(state->inode, opendata->lgp, ctx); | |
3094 | ||
1bf85d8c TM |
3095 | ret = nfs4_opendata_access(sp->so_cred, opendata, state, |
3096 | acc_mode, flags); | |
c21443c2 TM |
3097 | if (ret != 0) |
3098 | goto out; | |
3099 | ||
2b0143b5 | 3100 | if (d_inode(dentry) == state->inode) { |
c45ffdd2 TM |
3101 | nfs_inode_attach_open_context(ctx); |
3102 | if (read_seqcount_retry(&sp->so_reclaim_seqcount, seq)) | |
3103 | nfs4_schedule_stateid_recovery(server, state); | |
3104 | } | |
2409a976 | 3105 | |
c21443c2 | 3106 | out: |
0cb98abb OK |
3107 | if (!opendata->cancelled) |
3108 | nfs4_sequence_free_slot(&opendata->o_res.seq_res); | |
c21443c2 TM |
3109 | return ret; |
3110 | } | |
3111 | ||
1da177e4 | 3112 | /* |
24ac23ab | 3113 | * Returns a referenced nfs4_state |
1da177e4 | 3114 | */ |
82be417a | 3115 | static int _nfs4_do_open(struct inode *dir, |
4197a055 | 3116 | struct nfs_open_context *ctx, |
82be417a | 3117 | int flags, |
8fd1ab74 | 3118 | const struct nfs4_open_createattrs *c, |
5bc2afc2 | 3119 | int *opened) |
1da177e4 LT |
3120 | { |
3121 | struct nfs4_state_owner *sp; | |
3122 | struct nfs4_state *state = NULL; | |
3123 | struct nfs_server *server = NFS_SERVER(dir); | |
e56e0b78 | 3124 | struct nfs4_opendata *opendata; |
4197a055 | 3125 | struct dentry *dentry = ctx->dentry; |
a52458b4 | 3126 | const struct cred *cred = ctx->cred; |
4197a055 | 3127 | struct nfs4_threshold **ctx_th = &ctx->mdsthreshold; |
1bf85d8c | 3128 | fmode_t fmode = _nfs4_ctx_to_openmode(ctx); |
49f9a0fa | 3129 | enum open_claim_type4 claim = NFS4_OPEN_CLAIM_NULL; |
8fd1ab74 TM |
3130 | struct iattr *sattr = c->sattr; |
3131 | struct nfs4_label *label = c->label; | |
1775fd3e | 3132 | struct nfs4_label *olabel = NULL; |
aac00a8d | 3133 | int status; |
1da177e4 LT |
3134 | |
3135 | /* Protect against reboot recovery conflicts */ | |
1da177e4 | 3136 | status = -ENOMEM; |
d1e284d5 TM |
3137 | sp = nfs4_get_state_owner(server, cred, GFP_KERNEL); |
3138 | if (sp == NULL) { | |
1da177e4 LT |
3139 | dprintk("nfs4_do_open: nfs4_get_state_owner failed!\n"); |
3140 | goto out_err; | |
3141 | } | |
334f87dd | 3142 | status = nfs4_client_recover_expired_lease(server->nfs_client); |
58d9714a | 3143 | if (status != 0) |
b4454fe1 | 3144 | goto err_put_state_owner; |
2b0143b5 DH |
3145 | if (d_really_is_positive(dentry)) |
3146 | nfs4_return_incompatible_delegation(d_inode(dentry), fmode); | |
58d9714a | 3147 | status = -ENOMEM; |
2b0143b5 | 3148 | if (d_really_is_positive(dentry)) |
49f9a0fa | 3149 | claim = NFS4_OPEN_CLAIM_FH; |
8fd1ab74 TM |
3150 | opendata = nfs4_opendata_alloc(dentry, sp, fmode, flags, |
3151 | c, claim, GFP_KERNEL); | |
e56e0b78 | 3152 | if (opendata == NULL) |
95d35cb4 | 3153 | goto err_put_state_owner; |
1da177e4 | 3154 | |
14c43f76 DQ |
3155 | if (label) { |
3156 | olabel = nfs4_label_alloc(server, GFP_KERNEL); | |
3157 | if (IS_ERR(olabel)) { | |
3158 | status = PTR_ERR(olabel); | |
3159 | goto err_opendata_put; | |
3160 | } | |
3161 | } | |
3162 | ||
e911b815 TM |
3163 | if (server->attr_bitmask[2] & FATTR4_WORD2_MDSTHRESHOLD) { |
3164 | if (!opendata->f_attr.mdsthreshold) { | |
3165 | opendata->f_attr.mdsthreshold = pnfs_mdsthreshold_alloc(); | |
3166 | if (!opendata->f_attr.mdsthreshold) | |
3167 | goto err_free_label; | |
3168 | } | |
1549210f | 3169 | opendata->o_arg.open_bitmap = &nfs4_pnfs_open_bitmap[0]; |
82be417a | 3170 | } |
2b0143b5 DH |
3171 | if (d_really_is_positive(dentry)) |
3172 | opendata->state = nfs4_get_open_state(d_inode(dentry), sp); | |
aac00a8d | 3173 | |
1bf85d8c | 3174 | status = _nfs4_open_and_get_state(opendata, flags, ctx); |
6168f62c | 3175 | if (status != 0) |
14c43f76 | 3176 | goto err_free_label; |
3efb9722 | 3177 | state = ctx->state; |
6168f62c | 3178 | |
efcbc04e | 3179 | if ((opendata->o_arg.open_flags & (O_CREAT|O_EXCL)) == (O_CREAT|O_EXCL) && |
549b19cc | 3180 | (opendata->o_arg.createmode != NFS4_CREATE_GUARDED)) { |
609339c1 | 3181 | unsigned attrs = nfs4_exclusive_attrset(opendata, sattr, &label); |
a1d1c4f1 TM |
3182 | /* |
3183 | * send create attributes which was not set by open | |
3184 | * with an extra setattr. | |
3185 | */ | |
609339c1 TM |
3186 | if (attrs || label) { |
3187 | unsigned ia_old = sattr->ia_valid; | |
3188 | ||
3189 | sattr->ia_valid = attrs; | |
a1d1c4f1 TM |
3190 | nfs_fattr_init(opendata->o_res.f_attr); |
3191 | status = nfs4_do_setattr(state->inode, cred, | |
3192 | opendata->o_res.f_attr, sattr, | |
29b59f94 | 3193 | ctx, label, olabel); |
a1d1c4f1 TM |
3194 | if (status == 0) { |
3195 | nfs_setattr_update_inode(state->inode, sattr, | |
3196 | opendata->o_res.f_attr); | |
3197 | nfs_setsecurity(state->inode, opendata->o_res.f_attr, olabel); | |
3198 | } | |
609339c1 | 3199 | sattr->ia_valid = ia_old; |
1775fd3e | 3200 | } |
0ab64e0e | 3201 | } |
c5c3fb5f | 3202 | if (opened && opendata->file_created) |
73a09dd9 | 3203 | *opened = 1; |
82be417a | 3204 | |
e911b815 | 3205 | if (pnfs_use_threshold(ctx_th, opendata->f_attr.mdsthreshold, server)) { |
82be417a | 3206 | *ctx_th = opendata->f_attr.mdsthreshold; |
e911b815 TM |
3207 | opendata->f_attr.mdsthreshold = NULL; |
3208 | } | |
82be417a | 3209 | |
14c43f76 DQ |
3210 | nfs4_label_free(olabel); |
3211 | ||
c6d00e63 | 3212 | nfs4_opendata_put(opendata); |
1da177e4 | 3213 | nfs4_put_state_owner(sp); |
1da177e4 | 3214 | return 0; |
14c43f76 DQ |
3215 | err_free_label: |
3216 | nfs4_label_free(olabel); | |
c6d00e63 TM |
3217 | err_opendata_put: |
3218 | nfs4_opendata_put(opendata); | |
e56e0b78 TM |
3219 | err_put_state_owner: |
3220 | nfs4_put_state_owner(sp); | |
1da177e4 | 3221 | out_err: |
1da177e4 LT |
3222 | return status; |
3223 | } | |
3224 | ||
3225 | ||
82be417a | 3226 | static struct nfs4_state *nfs4_do_open(struct inode *dir, |
4197a055 | 3227 | struct nfs_open_context *ctx, |
82be417a AA |
3228 | int flags, |
3229 | struct iattr *sattr, | |
5bc2afc2 TM |
3230 | struct nfs4_label *label, |
3231 | int *opened) | |
1da177e4 | 3232 | { |
49f9a0fa | 3233 | struct nfs_server *server = NFS_SERVER(dir); |
0688e64b TM |
3234 | struct nfs4_exception exception = { |
3235 | .interruptible = true, | |
3236 | }; | |
1da177e4 | 3237 | struct nfs4_state *res; |
8fd1ab74 TM |
3238 | struct nfs4_open_createattrs c = { |
3239 | .label = label, | |
3240 | .sattr = sattr, | |
3241 | .verf = { | |
3242 | [0] = (__u32)jiffies, | |
3243 | [1] = (__u32)current->pid, | |
3244 | }, | |
3245 | }; | |
1da177e4 LT |
3246 | int status; |
3247 | ||
3248 | do { | |
8fd1ab74 | 3249 | status = _nfs4_do_open(dir, ctx, flags, &c, opened); |
3efb9722 | 3250 | res = ctx->state; |
42113a75 | 3251 | trace_nfs4_open_file(ctx, flags, status); |
1da177e4 LT |
3252 | if (status == 0) |
3253 | break; | |
3254 | /* NOTE: BAD_SEQID means the server and client disagree about the | |
3255 | * book-keeping w.r.t. state-changing operations | |
3256 | * (OPEN/CLOSE/LOCK/LOCKU...) | |
3257 | * It is actually a sign of a bug on the client or on the server. | |
3258 | * | |
3259 | * If we receive a BAD_SEQID error in the particular case of | |
cee54fc9 | 3260 | * doing an OPEN, we assume that nfs_increment_open_seqid() will |
1da177e4 LT |
3261 | * have unhashed the old state_owner for us, and that we can |
3262 | * therefore safely retry using a new one. We should still warn | |
3263 | * the user though... | |
3264 | */ | |
3265 | if (status == -NFS4ERR_BAD_SEQID) { | |
9a3ba432 | 3266 | pr_warn_ratelimited("NFS: v4 server %s " |
6f43ddcc TM |
3267 | " returned a bad sequence-id error!\n", |
3268 | NFS_SERVER(dir)->nfs_client->cl_hostname); | |
1da177e4 LT |
3269 | exception.retry = 1; |
3270 | continue; | |
3271 | } | |
550f5747 TM |
3272 | /* |
3273 | * BAD_STATEID on OPEN means that the server cancelled our | |
3274 | * state before it received the OPEN_CONFIRM. | |
3275 | * Recover by retrying the request as per the discussion | |
3276 | * on Page 181 of RFC3530. | |
3277 | */ | |
3278 | if (status == -NFS4ERR_BAD_STATEID) { | |
3279 | exception.retry = 1; | |
3280 | continue; | |
3281 | } | |
924491f2 RM |
3282 | if (status == -NFS4ERR_EXPIRED) { |
3283 | nfs4_schedule_lease_recovery(server->nfs_client); | |
3284 | exception.retry = 1; | |
3285 | continue; | |
3286 | } | |
aac00a8d TM |
3287 | if (status == -EAGAIN) { |
3288 | /* We must have found a delegation */ | |
3289 | exception.retry = 1; | |
3290 | continue; | |
3291 | } | |
49f9a0fa TM |
3292 | if (nfs4_clear_cap_atomic_open_v1(server, status, &exception)) |
3293 | continue; | |
3294 | res = ERR_PTR(nfs4_handle_exception(server, | |
1da177e4 LT |
3295 | status, &exception)); |
3296 | } while (exception.retry); | |
3297 | return res; | |
3298 | } | |
3299 | ||
8487c479 TM |
3300 | static int _nfs4_do_setattr(struct inode *inode, |
3301 | struct nfs_setattrargs *arg, | |
3302 | struct nfs_setattrres *res, | |
a52458b4 | 3303 | const struct cred *cred, |
29b59f94 | 3304 | struct nfs_open_context *ctx) |
1da177e4 | 3305 | { |
3e4f6290 | 3306 | struct nfs_server *server = NFS_SERVER(inode); |
d9b67e1e | 3307 | struct rpc_message msg = { |
659bfcd6 | 3308 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SETATTR], |
8487c479 TM |
3309 | .rpc_argp = arg, |
3310 | .rpc_resp = res, | |
659bfcd6 | 3311 | .rpc_cred = cred, |
d9b67e1e | 3312 | }; |
a52458b4 | 3313 | const struct cred *delegation_cred = NULL; |
26e976a8 | 3314 | unsigned long timestamp = jiffies; |
ee3ae84e | 3315 | bool truncate; |
65e4308d | 3316 | int status; |
1da177e4 | 3317 | |
8487c479 | 3318 | nfs_fattr_init(res->fattr); |
1da177e4 | 3319 | |
ee3ae84e | 3320 | /* Servers should only apply open mode checks for file size changes */ |
8487c479 | 3321 | truncate = (arg->iap->ia_valid & ATTR_SIZE) ? true : false; |
644c9f40 CL |
3322 | if (!truncate) { |
3323 | nfs4_inode_make_writeable(inode); | |
991eedb1 | 3324 | goto zero_stateid; |
644c9f40 | 3325 | } |
ee3ae84e | 3326 | |
991eedb1 | 3327 | if (nfs4_copy_delegation_stateid(inode, FMODE_WRITE, &arg->stateid, &delegation_cred)) { |
ee3ae84e | 3328 | /* Use that stateid */ |
09a54f0e | 3329 | } else if (ctx != NULL && ctx->state) { |
17393475 | 3330 | struct nfs_lock_context *l_ctx; |
29b59f94 | 3331 | if (!nfs4_valid_open_stateid(ctx->state)) |
0418dae1 | 3332 | return -EBADF; |
17393475 N |
3333 | l_ctx = nfs_get_lock_context(ctx); |
3334 | if (IS_ERR(l_ctx)) | |
3335 | return PTR_ERR(l_ctx); | |
7a0566b3 N |
3336 | status = nfs4_select_rw_stateid(ctx->state, FMODE_WRITE, l_ctx, |
3337 | &arg->stateid, &delegation_cred); | |
3338 | nfs_put_lock_context(l_ctx); | |
3339 | if (status == -EIO) | |
0418dae1 | 3340 | return -EBADF; |
d826e5b8 OK |
3341 | else if (status == -EAGAIN) |
3342 | goto zero_stateid; | |
991eedb1 TM |
3343 | } else { |
3344 | zero_stateid: | |
8487c479 | 3345 | nfs4_stateid_copy(&arg->stateid, &zero_stateid); |
991eedb1 | 3346 | } |
abf4e13c TM |
3347 | if (delegation_cred) |
3348 | msg.rpc_cred = delegation_cred; | |
1da177e4 | 3349 | |
8487c479 | 3350 | status = nfs4_call_sync(server->client, server, &msg, &arg->seq_args, &res->seq_res, 1); |
abf4e13c | 3351 | |
a52458b4 | 3352 | put_cred(delegation_cred); |
29b59f94 | 3353 | if (status == 0 && ctx != NULL) |
26e976a8 | 3354 | renew_lease(server, timestamp); |
8487c479 | 3355 | trace_nfs4_setattr(inode, &arg->stateid, status); |
65e4308d | 3356 | return status; |
1da177e4 LT |
3357 | } |
3358 | ||
a52458b4 | 3359 | static int nfs4_do_setattr(struct inode *inode, const struct cred *cred, |
659bfcd6 | 3360 | struct nfs_fattr *fattr, struct iattr *sattr, |
29b59f94 | 3361 | struct nfs_open_context *ctx, struct nfs4_label *ilabel, |
1775fd3e | 3362 | struct nfs4_label *olabel) |
1da177e4 | 3363 | { |
3e4f6290 | 3364 | struct nfs_server *server = NFS_SERVER(inode); |
30846df0 | 3365 | __u32 bitmask[NFS4_BITMASK_SZ]; |
29b59f94 | 3366 | struct nfs4_state *state = ctx ? ctx->state : NULL; |
d9b67e1e AS |
3367 | struct nfs_setattrargs arg = { |
3368 | .fh = NFS_FH(inode), | |
3369 | .iap = sattr, | |
8487c479 | 3370 | .server = server, |
30846df0 | 3371 | .bitmask = bitmask, |
8487c479 | 3372 | .label = ilabel, |
d9b67e1e AS |
3373 | }; |
3374 | struct nfs_setattrres res = { | |
8487c479 TM |
3375 | .fattr = fattr, |
3376 | .label = olabel, | |
3377 | .server = server, | |
d9b67e1e | 3378 | }; |
a1d0b5ee TM |
3379 | struct nfs4_exception exception = { |
3380 | .state = state, | |
3114ea7a | 3381 | .inode = inode, |
8487c479 | 3382 | .stateid = &arg.stateid, |
a1d0b5ee | 3383 | }; |
a71029b8 | 3384 | unsigned long adjust_flags = NFS_INO_INVALID_CHANGE; |
1da177e4 | 3385 | int err; |
8487c479 | 3386 | |
720869eb TM |
3387 | if (sattr->ia_valid & (ATTR_MODE | ATTR_KILL_SUID | ATTR_KILL_SGID)) |
3388 | adjust_flags |= NFS_INO_INVALID_MODE; | |
3389 | if (sattr->ia_valid & (ATTR_UID | ATTR_GID)) | |
a71029b8 TM |
3390 | adjust_flags |= NFS_INO_INVALID_OTHER; |
3391 | ||
1da177e4 | 3392 | do { |
a71029b8 TM |
3393 | nfs4_bitmap_copy_adjust(bitmask, nfs4_bitmask(server, olabel), |
3394 | inode, adjust_flags); | |
30846df0 | 3395 | |
29b59f94 | 3396 | err = _nfs4_do_setattr(inode, &arg, &res, cred, ctx); |
451146be TM |
3397 | switch (err) { |
3398 | case -NFS4ERR_OPENMODE: | |
721ccfb7 TM |
3399 | if (!(sattr->ia_valid & ATTR_SIZE)) { |
3400 | pr_warn_once("NFSv4: server %s is incorrectly " | |
3401 | "applying open mode checks to " | |
3402 | "a SETATTR that is not " | |
3403 | "changing file size.\n", | |
3404 | server->nfs_client->cl_hostname); | |
3405 | } | |
451146be TM |
3406 | if (state && !(state->state & FMODE_WRITE)) { |
3407 | err = -EBADF; | |
3408 | if (sattr->ia_valid & ATTR_OPEN) | |
3409 | err = -EACCES; | |
3410 | goto out; | |
3411 | } | |
3412 | } | |
3413 | err = nfs4_handle_exception(server, err, &exception); | |
1da177e4 | 3414 | } while (exception.retry); |
451146be | 3415 | out: |
1da177e4 LT |
3416 | return err; |
3417 | } | |
3418 | ||
500d701f PT |
3419 | static bool |
3420 | nfs4_wait_on_layoutreturn(struct inode *inode, struct rpc_task *task) | |
3421 | { | |
3422 | if (inode == NULL || !nfs_have_layout(inode)) | |
3423 | return false; | |
3424 | ||
3425 | return pnfs_wait_on_layoutreturn(inode, task); | |
3426 | } | |
3427 | ||
0e0cb35b TM |
3428 | /* |
3429 | * Update the seqid of an open stateid | |
3430 | */ | |
3431 | static void nfs4_sync_open_stateid(nfs4_stateid *dst, | |
3432 | struct nfs4_state *state) | |
3433 | { | |
3434 | __be32 seqid_open; | |
3435 | u32 dst_seqid; | |
3436 | int seq; | |
3437 | ||
3438 | for (;;) { | |
3439 | if (!nfs4_valid_open_stateid(state)) | |
3440 | break; | |
3441 | seq = read_seqbegin(&state->seqlock); | |
3442 | if (!nfs4_state_match_open_stateid_other(state, dst)) { | |
3443 | nfs4_stateid_copy(dst, &state->open_stateid); | |
3444 | if (read_seqretry(&state->seqlock, seq)) | |
3445 | continue; | |
3446 | break; | |
3447 | } | |
3448 | seqid_open = state->open_stateid.seqid; | |
3449 | if (read_seqretry(&state->seqlock, seq)) | |
3450 | continue; | |
3451 | ||
3452 | dst_seqid = be32_to_cpu(dst->seqid); | |
3453 | if ((s32)(dst_seqid - be32_to_cpu(seqid_open)) < 0) | |
3454 | dst->seqid = seqid_open; | |
3455 | break; | |
3456 | } | |
3457 | } | |
3458 | ||
3459 | /* | |
3460 | * Update the seqid of an open stateid after receiving | |
3461 | * NFS4ERR_OLD_STATEID | |
3462 | */ | |
3463 | static bool nfs4_refresh_open_old_stateid(nfs4_stateid *dst, | |
3464 | struct nfs4_state *state) | |
3465 | { | |
3466 | __be32 seqid_open; | |
3467 | u32 dst_seqid; | |
3468 | bool ret; | |
b4868b44 BC |
3469 | int seq, status = -EAGAIN; |
3470 | DEFINE_WAIT(wait); | |
0e0cb35b TM |
3471 | |
3472 | for (;;) { | |
3473 | ret = false; | |
3474 | if (!nfs4_valid_open_stateid(state)) | |
3475 | break; | |
3476 | seq = read_seqbegin(&state->seqlock); | |
3477 | if (!nfs4_state_match_open_stateid_other(state, dst)) { | |
3478 | if (read_seqretry(&state->seqlock, seq)) | |
3479 | continue; | |
3480 | break; | |
3481 | } | |
b4868b44 BC |
3482 | |
3483 | write_seqlock(&state->seqlock); | |
0e0cb35b | 3484 | seqid_open = state->open_stateid.seqid; |
0e0cb35b TM |
3485 | |
3486 | dst_seqid = be32_to_cpu(dst->seqid); | |
b4868b44 BC |
3487 | |
3488 | /* Did another OPEN bump the state's seqid? try again: */ | |
3489 | if ((s32)(be32_to_cpu(seqid_open) - dst_seqid) > 0) { | |
0e0cb35b | 3490 | dst->seqid = seqid_open; |
b4868b44 BC |
3491 | write_sequnlock(&state->seqlock); |
3492 | ret = true; | |
3493 | break; | |
3494 | } | |
3495 | ||
3496 | /* server says we're behind but we haven't seen the update yet */ | |
3497 | set_bit(NFS_STATE_CHANGE_WAIT, &state->flags); | |
3498 | prepare_to_wait(&state->waitq, &wait, TASK_KILLABLE); | |
3499 | write_sequnlock(&state->seqlock); | |
3500 | trace_nfs4_close_stateid_update_wait(state->inode, dst, 0); | |
3501 | ||
bb002388 | 3502 | if (fatal_signal_pending(current)) |
b4868b44 BC |
3503 | status = -EINTR; |
3504 | else | |
3505 | if (schedule_timeout(5*HZ) != 0) | |
3506 | status = 0; | |
3507 | ||
3508 | finish_wait(&state->waitq, &wait); | |
3509 | ||
3510 | if (!status) | |
3511 | continue; | |
3512 | if (status == -EINTR) | |
3513 | break; | |
3514 | ||
3515 | /* we slept the whole 5 seconds, we must have lost a seqid */ | |
3516 | dst->seqid = cpu_to_be32(dst_seqid + 1); | |
0e0cb35b TM |
3517 | ret = true; |
3518 | break; | |
3519 | } | |
3520 | ||
3521 | return ret; | |
3522 | } | |
3523 | ||
1da177e4 LT |
3524 | struct nfs4_closedata { |
3525 | struct inode *inode; | |
3526 | struct nfs4_state *state; | |
3527 | struct nfs_closeargs arg; | |
3528 | struct nfs_closeres res; | |
cf805165 TM |
3529 | struct { |
3530 | struct nfs4_layoutreturn_args arg; | |
3531 | struct nfs4_layoutreturn_res res; | |
4d796d75 | 3532 | struct nfs4_xdr_opaque_data ld_private; |
cf805165 TM |
3533 | u32 roc_barrier; |
3534 | bool roc; | |
3535 | } lr; | |
516a6af6 | 3536 | struct nfs_fattr fattr; |
26e976a8 | 3537 | unsigned long timestamp; |
1da177e4 LT |
3538 | }; |
3539 | ||
963d8fe5 | 3540 | static void nfs4_free_closedata(void *data) |
9512135d | 3541 | { |
963d8fe5 TM |
3542 | struct nfs4_closedata *calldata = data; |
3543 | struct nfs4_state_owner *sp = calldata->state->owner; | |
643168c2 | 3544 | struct super_block *sb = calldata->state->inode->i_sb; |
9512135d | 3545 | |
cf805165 | 3546 | if (calldata->lr.roc) |
1c5bd76d TM |
3547 | pnfs_roc_release(&calldata->lr.arg, &calldata->lr.res, |
3548 | calldata->res.lr_ret); | |
9512135d TM |
3549 | nfs4_put_open_state(calldata->state); |
3550 | nfs_free_seqid(calldata->arg.seqid); | |
9512135d | 3551 | nfs4_put_state_owner(sp); |
322b2b90 | 3552 | nfs_sb_deactive(sb); |
9512135d TM |
3553 | kfree(calldata); |
3554 | } | |
3555 | ||
963d8fe5 | 3556 | static void nfs4_close_done(struct rpc_task *task, void *data) |
1da177e4 | 3557 | { |
963d8fe5 | 3558 | struct nfs4_closedata *calldata = data; |
1da177e4 | 3559 | struct nfs4_state *state = calldata->state; |
1da177e4 | 3560 | struct nfs_server *server = NFS_SERVER(calldata->inode); |
412f6c4c | 3561 | nfs4_stateid *res_stateid = NULL; |
b8b8d221 TM |
3562 | struct nfs4_exception exception = { |
3563 | .state = state, | |
3564 | .inode = calldata->inode, | |
3565 | .stateid = &calldata->arg.stateid, | |
3566 | }; | |
1da177e4 | 3567 | |
a3ca5651 | 3568 | dprintk("%s: begin!\n", __func__); |
14516c3a TM |
3569 | if (!nfs4_sequence_done(task, &calldata->res.seq_res)) |
3570 | return; | |
42113a75 | 3571 | trace_nfs4_close(state, &calldata->arg, &calldata->res, task->tk_status); |
cf805165 TM |
3572 | |
3573 | /* Handle Layoutreturn errors */ | |
078000d0 TM |
3574 | if (pnfs_roc_done(task, &calldata->arg.lr_args, &calldata->res.lr_res, |
3575 | &calldata->res.lr_ret) == -EAGAIN) | |
287a9c55 | 3576 | goto out_restart; |
cf805165 | 3577 | |
d9b67e1e | 3578 | /* hmm. we are done with the inode, and in the process of freeing |
1da177e4 LT |
3579 | * the state_owner. we keep this around to process errors |
3580 | */ | |
1da177e4 LT |
3581 | switch (task->tk_status) { |
3582 | case 0: | |
412f6c4c | 3583 | res_stateid = &calldata->res.stateid; |
26e976a8 | 3584 | renew_lease(server, calldata->timestamp); |
412f6c4c | 3585 | break; |
f07d4a31 TM |
3586 | case -NFS4ERR_ACCESS: |
3587 | if (calldata->arg.bitmask != NULL) { | |
3588 | calldata->arg.bitmask = NULL; | |
3589 | calldata->res.fattr = NULL; | |
91b30d2e | 3590 | goto out_restart; |
f07d4a31 TM |
3591 | |
3592 | } | |
3593 | break; | |
12f275cd TM |
3594 | case -NFS4ERR_OLD_STATEID: |
3595 | /* Did we race with OPEN? */ | |
0e0cb35b | 3596 | if (nfs4_refresh_open_old_stateid(&calldata->arg.stateid, |
91b30d2e TM |
3597 | state)) |
3598 | goto out_restart; | |
12f275cd | 3599 | goto out_release; |
69794ad7 | 3600 | case -NFS4ERR_ADMIN_REVOKED: |
1da177e4 | 3601 | case -NFS4ERR_STALE_STATEID: |
26d36301 TM |
3602 | case -NFS4ERR_EXPIRED: |
3603 | nfs4_free_revoked_stateid(server, | |
3604 | &calldata->arg.stateid, | |
3605 | task->tk_msg.rpc_cred); | |
df561f66 | 3606 | fallthrough; |
9e33bed5 | 3607 | case -NFS4ERR_BAD_STATEID: |
e217e825 TM |
3608 | if (calldata->arg.fmode == 0) |
3609 | break; | |
df561f66 | 3610 | fallthrough; |
1da177e4 | 3611 | default: |
b8b8d221 TM |
3612 | task->tk_status = nfs4_async_handle_exception(task, |
3613 | server, task->tk_status, &exception); | |
3614 | if (exception.retry) | |
91b30d2e | 3615 | goto out_restart; |
1da177e4 | 3616 | } |
4a1e2feb TM |
3617 | nfs_clear_open_stateid(state, &calldata->arg.stateid, |
3618 | res_stateid, calldata->arg.fmode); | |
69794ad7 | 3619 | out_release: |
91b30d2e | 3620 | task->tk_status = 0; |
72211dbe | 3621 | nfs_release_seqid(calldata->arg.seqid); |
d8d84983 | 3622 | nfs_refresh_inode(calldata->inode, &calldata->fattr); |
a3ca5651 | 3623 | dprintk("%s: done, ret = %d!\n", __func__, task->tk_status); |
91b30d2e | 3624 | return; |
91b30d2e TM |
3625 | out_restart: |
3626 | task->tk_status = 0; | |
3627 | rpc_restart_call_prepare(task); | |
3628 | goto out_release; | |
1da177e4 LT |
3629 | } |
3630 | ||
4ce70ada | 3631 | static void nfs4_close_prepare(struct rpc_task *task, void *data) |
1da177e4 | 3632 | { |
4ce70ada | 3633 | struct nfs4_closedata *calldata = data; |
9512135d | 3634 | struct nfs4_state *state = calldata->state; |
7fdab069 | 3635 | struct inode *inode = calldata->inode; |
332d1a03 | 3636 | struct nfs_server *server = NFS_SERVER(inode); |
c8bf7073 | 3637 | struct pnfs_layout_hdr *lo; |
aee7af35 | 3638 | bool is_rdonly, is_wronly, is_rdwr; |
88069f77 | 3639 | int call_close = 0; |
9512135d | 3640 | |
a3ca5651 | 3641 | dprintk("%s: begin!\n", __func__); |
963d8fe5 | 3642 | if (nfs_wait_on_sequence(calldata->arg.seqid, task) != 0) |
c8da19b9 | 3643 | goto out_wait; |
003707c7 | 3644 | |
88069f77 | 3645 | task->tk_msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN_DOWNGRADE]; |
4cecb76f | 3646 | spin_lock(&state->owner->so_lock); |
aee7af35 TM |
3647 | is_rdwr = test_bit(NFS_O_RDWR_STATE, &state->flags); |
3648 | is_rdonly = test_bit(NFS_O_RDONLY_STATE, &state->flags); | |
3649 | is_wronly = test_bit(NFS_O_WRONLY_STATE, &state->flags); | |
003707c7 | 3650 | /* Calculate the change in open mode */ |
cd9288ff | 3651 | calldata->arg.fmode = 0; |
e7616923 | 3652 | if (state->n_rdwr == 0) { |
cd9288ff TM |
3653 | if (state->n_rdonly == 0) |
3654 | call_close |= is_rdonly; | |
3655 | else if (is_rdonly) | |
3656 | calldata->arg.fmode |= FMODE_READ; | |
3657 | if (state->n_wronly == 0) | |
3658 | call_close |= is_wronly; | |
3659 | else if (is_wronly) | |
3660 | calldata->arg.fmode |= FMODE_WRITE; | |
e547f262 TM |
3661 | if (calldata->arg.fmode != (FMODE_READ|FMODE_WRITE)) |
3662 | call_close |= is_rdwr; | |
cd9288ff TM |
3663 | } else if (is_rdwr) |
3664 | calldata->arg.fmode |= FMODE_READ|FMODE_WRITE; | |
3665 | ||
0e0cb35b TM |
3666 | nfs4_sync_open_stateid(&calldata->arg.stateid, state); |
3667 | if (!nfs4_valid_open_stateid(state)) | |
5d422301 | 3668 | call_close = 0; |
4cecb76f | 3669 | spin_unlock(&state->owner->so_lock); |
88069f77 TM |
3670 | |
3671 | if (!call_close) { | |
963d8fe5 | 3672 | /* Note: exit _without_ calling nfs4_close_done */ |
c8da19b9 | 3673 | goto out_no_action; |
9512135d | 3674 | } |
88069f77 | 3675 | |
1c5bd76d | 3676 | if (!calldata->lr.roc && nfs4_wait_on_layoutreturn(inode, task)) { |
500d701f PT |
3677 | nfs_release_seqid(calldata->arg.seqid); |
3678 | goto out_wait; | |
3679 | } | |
3680 | ||
c8bf7073 TM |
3681 | lo = calldata->arg.lr_args ? calldata->arg.lr_args->layout : NULL; |
3682 | if (lo && !pnfs_layout_is_valid(lo)) { | |
3683 | calldata->arg.lr_args = NULL; | |
3684 | calldata->res.lr_res = NULL; | |
3685 | } | |
3686 | ||
9413a1a1 | 3687 | if (calldata->arg.fmode == 0) |
88069f77 | 3688 | task->tk_msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_CLOSE]; |
3ecefc92 | 3689 | |
9413a1a1 | 3690 | if (calldata->arg.fmode == 0 || calldata->arg.fmode == FMODE_READ) { |
3ecefc92 | 3691 | /* Close-to-open cache consistency revalidation */ |
76bd5c01 | 3692 | if (!nfs4_have_delegation(inode, FMODE_READ)) { |
332d1a03 TM |
3693 | nfs4_bitmask_set(calldata->arg.bitmask_store, |
3694 | server->cache_consistency_bitmask, | |
3695 | inode, server, NULL); | |
3696 | calldata->arg.bitmask = calldata->arg.bitmask_store; | |
76bd5c01 | 3697 | } else |
3ecefc92 TM |
3698 | calldata->arg.bitmask = NULL; |
3699 | } | |
3c13cb5b | 3700 | |
6ae37339 TM |
3701 | calldata->arg.share_access = |
3702 | nfs4_map_atomic_open_share(NFS_SERVER(inode), | |
3703 | calldata->arg.fmode, 0); | |
88069f77 | 3704 | |
d8d84983 TM |
3705 | if (calldata->res.fattr == NULL) |
3706 | calldata->arg.bitmask = NULL; | |
3707 | else if (calldata->arg.bitmask == NULL) | |
3708 | calldata->res.fattr = NULL; | |
26e976a8 | 3709 | calldata->timestamp = jiffies; |
42e1cca7 | 3710 | if (nfs4_setup_sequence(NFS_SERVER(inode)->nfs_client, |
9d12b216 TM |
3711 | &calldata->arg.seq_args, |
3712 | &calldata->res.seq_res, | |
2240a9e2 TM |
3713 | task) != 0) |
3714 | nfs_release_seqid(calldata->arg.seqid); | |
a3ca5651 | 3715 | dprintk("%s: done!\n", __func__); |
c8da19b9 TM |
3716 | return; |
3717 | out_no_action: | |
3718 | task->tk_action = NULL; | |
3719 | out_wait: | |
3720 | nfs4_sequence_done(task, &calldata->res.seq_res); | |
1da177e4 LT |
3721 | } |
3722 | ||
963d8fe5 | 3723 | static const struct rpc_call_ops nfs4_close_ops = { |
4ce70ada | 3724 | .rpc_call_prepare = nfs4_close_prepare, |
963d8fe5 TM |
3725 | .rpc_call_done = nfs4_close_done, |
3726 | .rpc_release = nfs4_free_closedata, | |
3727 | }; | |
3728 | ||
1da177e4 LT |
3729 | /* |
3730 | * It is possible for data to be read/written from a mem-mapped file | |
3731 | * after the sys_close call (which hits the vfs layer as a flush). | |
3732 | * This means that we can't safely call nfsv4 close on a file until | |
3733 | * the inode is cleared. This in turn means that we are not good | |
3734 | * NFSv4 citizens - we do not indicate to the server to update the file's | |
3735 | * share state even when we are done with one of the three share | |
3736 | * stateid's in the inode. | |
3737 | * | |
3738 | * NOTE: Caller must be holding the sp->so_owner semaphore! | |
3739 | */ | |
1f7977c1 | 3740 | int nfs4_do_close(struct nfs4_state *state, gfp_t gfp_mask, int wait) |
1da177e4 | 3741 | { |
4a35bd41 | 3742 | struct nfs_server *server = NFS_SERVER(state->inode); |
63f5f796 | 3743 | struct nfs_seqid *(*alloc_seqid)(struct nfs_seqid_counter *, gfp_t); |
1da177e4 | 3744 | struct nfs4_closedata *calldata; |
b39e625b TM |
3745 | struct nfs4_state_owner *sp = state->owner; |
3746 | struct rpc_task *task; | |
5138fde0 TM |
3747 | struct rpc_message msg = { |
3748 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_CLOSE], | |
3749 | .rpc_cred = state->owner->so_cred, | |
3750 | }; | |
c970aa85 TM |
3751 | struct rpc_task_setup task_setup_data = { |
3752 | .rpc_client = server->client, | |
5138fde0 | 3753 | .rpc_message = &msg, |
c970aa85 | 3754 | .callback_ops = &nfs4_close_ops, |
101070ca | 3755 | .workqueue = nfsiod_workqueue, |
61296507 | 3756 | .flags = RPC_TASK_ASYNC | RPC_TASK_CRED_NOREF, |
c970aa85 | 3757 | }; |
9512135d | 3758 | int status = -ENOMEM; |
1da177e4 | 3759 | |
85e39fee OK |
3760 | if (server->nfs_client->cl_minorversion) |
3761 | task_setup_data.flags |= RPC_TASK_MOVEABLE; | |
3762 | ||
fa940720 WAA |
3763 | nfs4_state_protect(server->nfs_client, NFS_SP4_MACH_CRED_CLEANUP, |
3764 | &task_setup_data.rpc_client, &msg); | |
3765 | ||
8535b2be | 3766 | calldata = kzalloc(sizeof(*calldata), gfp_mask); |
1da177e4 | 3767 | if (calldata == NULL) |
9512135d | 3768 | goto out; |
fba83f34 | 3769 | nfs4_init_sequence(&calldata->arg.seq_args, &calldata->res.seq_res, 1, 0); |
4a35bd41 | 3770 | calldata->inode = state->inode; |
1da177e4 | 3771 | calldata->state = state; |
4a35bd41 | 3772 | calldata->arg.fh = NFS_FH(state->inode); |
c82bac6f TM |
3773 | if (!nfs4_copy_open_stateid(&calldata->arg.stateid, state)) |
3774 | goto out_free_calldata; | |
1da177e4 | 3775 | /* Serialization for the sequence id */ |
63f5f796 TM |
3776 | alloc_seqid = server->nfs_client->cl_mvops->alloc_seqid; |
3777 | calldata->arg.seqid = alloc_seqid(&state->owner->so_seqid, gfp_mask); | |
badc76dd | 3778 | if (IS_ERR(calldata->arg.seqid)) |
9512135d | 3779 | goto out_free_calldata; |
d8d84983 | 3780 | nfs_fattr_init(&calldata->fattr); |
dc0b027d | 3781 | calldata->arg.fmode = 0; |
4d796d75 | 3782 | calldata->lr.arg.ld_private = &calldata->lr.ld_private; |
516a6af6 | 3783 | calldata->res.fattr = &calldata->fattr; |
c1d51931 | 3784 | calldata->res.seqid = calldata->arg.seqid; |
516a6af6 | 3785 | calldata->res.server = server; |
cf805165 | 3786 | calldata->res.lr_ret = -NFS4ERR_NOMATCHING_LAYOUT; |
1c5bd76d TM |
3787 | calldata->lr.roc = pnfs_roc(state->inode, |
3788 | &calldata->lr.arg, &calldata->lr.res, msg.rpc_cred); | |
3789 | if (calldata->lr.roc) { | |
3790 | calldata->arg.lr_args = &calldata->lr.arg; | |
3791 | calldata->res.lr_res = &calldata->lr.res; | |
3792 | } | |
643168c2 | 3793 | nfs_sb_active(calldata->inode->i_sb); |
9512135d | 3794 | |
1174dd1f TM |
3795 | msg.rpc_argp = &calldata->arg; |
3796 | msg.rpc_resp = &calldata->res; | |
c970aa85 TM |
3797 | task_setup_data.callback_data = calldata; |
3798 | task = rpc_run_task(&task_setup_data); | |
b39e625b TM |
3799 | if (IS_ERR(task)) |
3800 | return PTR_ERR(task); | |
a49c3c77 TM |
3801 | status = 0; |
3802 | if (wait) | |
3803 | status = rpc_wait_for_completion_task(task); | |
b39e625b | 3804 | rpc_put_task(task); |
a49c3c77 | 3805 | return status; |
9512135d TM |
3806 | out_free_calldata: |
3807 | kfree(calldata); | |
3808 | out: | |
b39e625b TM |
3809 | nfs4_put_open_state(state); |
3810 | nfs4_put_state_owner(sp); | |
9512135d | 3811 | return status; |
1da177e4 LT |
3812 | } |
3813 | ||
2b484297 | 3814 | static struct inode * |
5bc2afc2 TM |
3815 | nfs4_atomic_open(struct inode *dir, struct nfs_open_context *ctx, |
3816 | int open_flags, struct iattr *attr, int *opened) | |
1da177e4 | 3817 | { |
1da177e4 | 3818 | struct nfs4_state *state; |
aa9c2669 DQ |
3819 | struct nfs4_label l = {0, 0, 0, NULL}, *label = NULL; |
3820 | ||
3821 | label = nfs4_label_init_security(dir, ctx->dentry, attr, &l); | |
1da177e4 | 3822 | |
565277f6 | 3823 | /* Protect against concurrent sillydeletes */ |
5bc2afc2 | 3824 | state = nfs4_do_open(dir, ctx, open_flags, attr, label, opened); |
aa9c2669 DQ |
3825 | |
3826 | nfs4_label_release_security(label); | |
3827 | ||
f46e0bd3 TM |
3828 | if (IS_ERR(state)) |
3829 | return ERR_CAST(state); | |
275bb307 | 3830 | return state->inode; |
1da177e4 LT |
3831 | } |
3832 | ||
1185a552 | 3833 | static void nfs4_close_context(struct nfs_open_context *ctx, int is_sync) |
7fe5c398 TM |
3834 | { |
3835 | if (ctx->state == NULL) | |
3836 | return; | |
3837 | if (is_sync) | |
1bf85d8c | 3838 | nfs4_close_sync(ctx->state, _nfs4_ctx_to_openmode(ctx)); |
7fe5c398 | 3839 | else |
1bf85d8c | 3840 | nfs4_close_state(ctx->state, _nfs4_ctx_to_openmode(ctx)); |
7fe5c398 | 3841 | } |
1da177e4 | 3842 | |
b944dba3 TM |
3843 | #define FATTR4_WORD1_NFS40_MASK (2*FATTR4_WORD1_MOUNTED_ON_FILEID - 1UL) |
3844 | #define FATTR4_WORD2_NFS41_MASK (2*FATTR4_WORD2_SUPPATTR_EXCLCREAT - 1UL) | |
b78ef845 | 3845 | #define FATTR4_WORD2_NFS42_MASK (2*FATTR4_WORD2_XATTR_SUPPORT - 1UL) |
b944dba3 | 3846 | |
1da177e4 LT |
3847 | static int _nfs4_server_capabilities(struct nfs_server *server, struct nfs_fh *fhandle) |
3848 | { | |
8c61282f | 3849 | u32 bitmask[3] = {}, minorversion = server->nfs_client->cl_minorversion; |
43652ad5 BH |
3850 | struct nfs4_server_caps_arg args = { |
3851 | .fhandle = fhandle, | |
8c61282f | 3852 | .bitmask = bitmask, |
43652ad5 | 3853 | }; |
1da177e4 LT |
3854 | struct nfs4_server_caps_res res = {}; |
3855 | struct rpc_message msg = { | |
3856 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SERVER_CAPS], | |
43652ad5 | 3857 | .rpc_argp = &args, |
1da177e4 LT |
3858 | .rpc_resp = &res, |
3859 | }; | |
3860 | int status; | |
f4b23de3 | 3861 | int i; |
1da177e4 | 3862 | |
8c61282f KM |
3863 | bitmask[0] = FATTR4_WORD0_SUPPORTED_ATTRS | |
3864 | FATTR4_WORD0_FH_EXPIRE_TYPE | | |
3865 | FATTR4_WORD0_LINK_SUPPORT | | |
3866 | FATTR4_WORD0_SYMLINK_SUPPORT | | |
3867 | FATTR4_WORD0_ACLSUPPORT; | |
3868 | if (minorversion) | |
3869 | bitmask[2] = FATTR4_WORD2_SUPPATTR_EXCLCREAT; | |
3870 | ||
7c513058 | 3871 | status = nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 | 3872 | if (status == 0) { |
b944dba3 | 3873 | /* Sanity check the server answers */ |
8c61282f | 3874 | switch (minorversion) { |
b944dba3 TM |
3875 | case 0: |
3876 | res.attr_bitmask[1] &= FATTR4_WORD1_NFS40_MASK; | |
3877 | res.attr_bitmask[2] = 0; | |
3878 | break; | |
3879 | case 1: | |
3880 | res.attr_bitmask[2] &= FATTR4_WORD2_NFS41_MASK; | |
3881 | break; | |
3882 | case 2: | |
3883 | res.attr_bitmask[2] &= FATTR4_WORD2_NFS42_MASK; | |
3884 | } | |
1da177e4 | 3885 | memcpy(server->attr_bitmask, res.attr_bitmask, sizeof(server->attr_bitmask)); |
ce62b114 TM |
3886 | server->caps &= ~(NFS_CAP_ACLS | NFS_CAP_HARDLINKS | |
3887 | NFS_CAP_SYMLINKS| NFS_CAP_SECURITY_LABEL); | |
3888 | server->fattr_valid = NFS_ATTR_FATTR_V4; | |
7dd7d959 MN |
3889 | if (res.attr_bitmask[0] & FATTR4_WORD0_ACL && |
3890 | res.acl_bitmask & ACL4_SUPPORT_ALLOW_ACL) | |
1da177e4 LT |
3891 | server->caps |= NFS_CAP_ACLS; |
3892 | if (res.has_links != 0) | |
3893 | server->caps |= NFS_CAP_HARDLINKS; | |
3894 | if (res.has_symlinks != 0) | |
3895 | server->caps |= NFS_CAP_SYMLINKS; | |
0b4f132b SM |
3896 | #ifdef CONFIG_NFS_V4_SECURITY_LABEL |
3897 | if (res.attr_bitmask[2] & FATTR4_WORD2_SECURITY_LABEL) | |
3898 | server->caps |= NFS_CAP_SECURITY_LABEL; | |
3899 | #endif | |
90d98ad8 OK |
3900 | if (res.attr_bitmask[0] & FATTR4_WORD0_FS_LOCATIONS) |
3901 | server->caps |= NFS_CAP_FS_LOCATIONS; | |
ce62b114 TM |
3902 | if (!(res.attr_bitmask[0] & FATTR4_WORD0_FILEID)) |
3903 | server->fattr_valid &= ~NFS_ATTR_FATTR_FILEID; | |
3904 | if (!(res.attr_bitmask[1] & FATTR4_WORD1_MODE)) | |
3905 | server->fattr_valid &= ~NFS_ATTR_FATTR_MODE; | |
3906 | if (!(res.attr_bitmask[1] & FATTR4_WORD1_NUMLINKS)) | |
3907 | server->fattr_valid &= ~NFS_ATTR_FATTR_NLINK; | |
3908 | if (!(res.attr_bitmask[1] & FATTR4_WORD1_OWNER)) | |
3909 | server->fattr_valid &= ~(NFS_ATTR_FATTR_OWNER | | |
3910 | NFS_ATTR_FATTR_OWNER_NAME); | |
3911 | if (!(res.attr_bitmask[1] & FATTR4_WORD1_OWNER_GROUP)) | |
3912 | server->fattr_valid &= ~(NFS_ATTR_FATTR_GROUP | | |
3913 | NFS_ATTR_FATTR_GROUP_NAME); | |
3914 | if (!(res.attr_bitmask[1] & FATTR4_WORD1_SPACE_USED)) | |
3915 | server->fattr_valid &= ~NFS_ATTR_FATTR_SPACE_USED; | |
3916 | if (!(res.attr_bitmask[1] & FATTR4_WORD1_TIME_ACCESS)) | |
3917 | server->fattr_valid &= ~NFS_ATTR_FATTR_ATIME; | |
3918 | if (!(res.attr_bitmask[1] & FATTR4_WORD1_TIME_METADATA)) | |
3919 | server->fattr_valid &= ~NFS_ATTR_FATTR_CTIME; | |
3920 | if (!(res.attr_bitmask[1] & FATTR4_WORD1_TIME_MODIFY)) | |
3921 | server->fattr_valid &= ~NFS_ATTR_FATTR_MTIME; | |
aa9c2669 DQ |
3922 | memcpy(server->attr_bitmask_nl, res.attr_bitmask, |
3923 | sizeof(server->attr_bitmask)); | |
b944dba3 | 3924 | server->attr_bitmask_nl[2] &= ~FATTR4_WORD2_SECURITY_LABEL; |
62ab460c | 3925 | |
a65318bf TM |
3926 | memcpy(server->cache_consistency_bitmask, res.attr_bitmask, sizeof(server->cache_consistency_bitmask)); |
3927 | server->cache_consistency_bitmask[0] &= FATTR4_WORD0_CHANGE|FATTR4_WORD0_SIZE; | |
3928 | server->cache_consistency_bitmask[1] &= FATTR4_WORD1_TIME_METADATA|FATTR4_WORD1_TIME_MODIFY; | |
b944dba3 | 3929 | server->cache_consistency_bitmask[2] = 0; |
f4b23de3 TM |
3930 | |
3931 | /* Avoid a regression due to buggy server */ | |
3932 | for (i = 0; i < ARRAY_SIZE(res.exclcreat_bitmask); i++) | |
3933 | res.exclcreat_bitmask[i] &= res.attr_bitmask[i]; | |
8c61282f KM |
3934 | memcpy(server->exclcreat_bitmask, res.exclcreat_bitmask, |
3935 | sizeof(server->exclcreat_bitmask)); | |
f4b23de3 | 3936 | |
1da177e4 | 3937 | server->acl_bitmask = res.acl_bitmask; |
264e6351 | 3938 | server->fh_expire_type = res.fh_expire_type; |
1da177e4 | 3939 | } |
cccef3b9 | 3940 | |
1da177e4 LT |
3941 | return status; |
3942 | } | |
3943 | ||
55a97593 | 3944 | int nfs4_server_capabilities(struct nfs_server *server, struct nfs_fh *fhandle) |
1da177e4 | 3945 | { |
0688e64b TM |
3946 | struct nfs4_exception exception = { |
3947 | .interruptible = true, | |
3948 | }; | |
1da177e4 LT |
3949 | int err; |
3950 | do { | |
3951 | err = nfs4_handle_exception(server, | |
3952 | _nfs4_server_capabilities(server, fhandle), | |
3953 | &exception); | |
3954 | } while (exception.retry); | |
3955 | return err; | |
3956 | } | |
3957 | ||
bdab4fd5 OK |
3958 | static int _nfs4_discover_trunking(struct nfs_server *server, |
3959 | struct nfs_fh *fhandle) | |
3960 | { | |
3961 | struct nfs4_fs_locations *locations = NULL; | |
3962 | struct page *page; | |
3963 | const struct cred *cred; | |
3964 | struct nfs_client *clp = server->nfs_client; | |
3965 | const struct nfs4_state_maintenance_ops *ops = | |
3966 | clp->cl_mvops->state_renewal_ops; | |
3967 | int status = -ENOMEM; | |
3968 | ||
3969 | cred = ops->get_state_renewal_cred(clp); | |
3970 | if (cred == NULL) { | |
3971 | cred = nfs4_get_clid_cred(clp); | |
3972 | if (cred == NULL) | |
3973 | return -ENOKEY; | |
3974 | } | |
3975 | ||
3976 | page = alloc_page(GFP_KERNEL); | |
3977 | locations = kmalloc(sizeof(struct nfs4_fs_locations), GFP_KERNEL); | |
3978 | if (page == NULL || locations == NULL) | |
3979 | goto out; | |
3980 | ||
3981 | status = nfs4_proc_get_locations(server, fhandle, locations, page, | |
3982 | cred); | |
3983 | if (status) | |
3984 | goto out; | |
3985 | out: | |
3986 | if (page) | |
3987 | __free_page(page); | |
3988 | kfree(locations); | |
3989 | return status; | |
3990 | } | |
3991 | ||
3992 | static int nfs4_discover_trunking(struct nfs_server *server, | |
3993 | struct nfs_fh *fhandle) | |
3994 | { | |
3995 | struct nfs4_exception exception = { | |
3996 | .interruptible = true, | |
3997 | }; | |
3998 | struct nfs_client *clp = server->nfs_client; | |
3999 | int err = 0; | |
4000 | ||
4001 | if (!nfs4_has_session(clp)) | |
4002 | goto out; | |
4003 | do { | |
4004 | err = nfs4_handle_exception(server, | |
4005 | _nfs4_discover_trunking(server, fhandle), | |
4006 | &exception); | |
4007 | } while (exception.retry); | |
4008 | out: | |
4009 | return err; | |
4010 | } | |
4011 | ||
1da177e4 LT |
4012 | static int _nfs4_lookup_root(struct nfs_server *server, struct nfs_fh *fhandle, |
4013 | struct nfs_fsinfo *info) | |
4014 | { | |
aa9c2669 | 4015 | u32 bitmask[3]; |
1da177e4 | 4016 | struct nfs4_lookup_root_arg args = { |
aa9c2669 | 4017 | .bitmask = bitmask, |
1da177e4 LT |
4018 | }; |
4019 | struct nfs4_lookup_res res = { | |
4020 | .server = server, | |
0e574af1 | 4021 | .fattr = info->fattr, |
1da177e4 LT |
4022 | .fh = fhandle, |
4023 | }; | |
4024 | struct rpc_message msg = { | |
4025 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOOKUP_ROOT], | |
4026 | .rpc_argp = &args, | |
4027 | .rpc_resp = &res, | |
4028 | }; | |
008f55d0 | 4029 | |
aa9c2669 DQ |
4030 | bitmask[0] = nfs4_fattr_bitmap[0]; |
4031 | bitmask[1] = nfs4_fattr_bitmap[1]; | |
4032 | /* | |
4033 | * Process the label in the upcoming getfattr | |
4034 | */ | |
4035 | bitmask[2] = nfs4_fattr_bitmap[2] & ~FATTR4_WORD2_SECURITY_LABEL; | |
4036 | ||
0e574af1 | 4037 | nfs_fattr_init(info->fattr); |
7c513058 | 4038 | return nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
4039 | } |
4040 | ||
4041 | static int nfs4_lookup_root(struct nfs_server *server, struct nfs_fh *fhandle, | |
4042 | struct nfs_fsinfo *info) | |
4043 | { | |
0688e64b TM |
4044 | struct nfs4_exception exception = { |
4045 | .interruptible = true, | |
4046 | }; | |
1da177e4 LT |
4047 | int err; |
4048 | do { | |
fb8a5ba8 | 4049 | err = _nfs4_lookup_root(server, fhandle, info); |
b5f875a9 | 4050 | trace_nfs4_lookup_root(server, fhandle, info->fattr, err); |
fb8a5ba8 BS |
4051 | switch (err) { |
4052 | case 0: | |
4053 | case -NFS4ERR_WRONGSEC: | |
05e9cfb4 | 4054 | goto out; |
fb8a5ba8 BS |
4055 | default: |
4056 | err = nfs4_handle_exception(server, err, &exception); | |
4057 | } | |
1da177e4 | 4058 | } while (exception.retry); |
05e9cfb4 | 4059 | out: |
1da177e4 LT |
4060 | return err; |
4061 | } | |
4062 | ||
8f70e95f BS |
4063 | static int nfs4_lookup_root_sec(struct nfs_server *server, struct nfs_fh *fhandle, |
4064 | struct nfs_fsinfo *info, rpc_authflavor_t flavor) | |
4065 | { | |
c2190661 TM |
4066 | struct rpc_auth_create_args auth_args = { |
4067 | .pseudoflavor = flavor, | |
4068 | }; | |
8f70e95f | 4069 | struct rpc_auth *auth; |
8f70e95f | 4070 | |
c2190661 | 4071 | auth = rpcauth_create(&auth_args, server->client); |
9df1336c AS |
4072 | if (IS_ERR(auth)) |
4073 | return -EACCES; | |
4074 | return nfs4_lookup_root(server, fhandle, info); | |
8f70e95f BS |
4075 | } |
4076 | ||
9a744ba3 CL |
4077 | /* |
4078 | * Retry pseudoroot lookup with various security flavors. We do this when: | |
4079 | * | |
4080 | * NFSv4.0: the PUTROOTFH operation returns NFS4ERR_WRONGSEC | |
4081 | * NFSv4.1: the server does not support the SECINFO_NO_NAME operation | |
4082 | * | |
4083 | * Returns zero on success, or a negative NFS4ERR value, or a | |
4084 | * negative errno value. | |
4085 | */ | |
801a16dc | 4086 | static int nfs4_find_root_sec(struct nfs_server *server, struct nfs_fh *fhandle, |
54ceac45 | 4087 | struct nfs_fsinfo *info) |
1da177e4 | 4088 | { |
9a744ba3 CL |
4089 | /* Per 3530bis 15.33.5 */ |
4090 | static const rpc_authflavor_t flav_array[] = { | |
4091 | RPC_AUTH_GSS_KRB5P, | |
4092 | RPC_AUTH_GSS_KRB5I, | |
4093 | RPC_AUTH_GSS_KRB5, | |
c4eafe11 | 4094 | RPC_AUTH_UNIX, /* courtesy */ |
9a744ba3 CL |
4095 | RPC_AUTH_NULL, |
4096 | }; | |
4097 | int status = -EPERM; | |
4098 | size_t i; | |
6a1a1e34 | 4099 | |
4d4b69dd WAA |
4100 | if (server->auth_info.flavor_len > 0) { |
4101 | /* try each flavor specified by user */ | |
4102 | for (i = 0; i < server->auth_info.flavor_len; i++) { | |
4103 | status = nfs4_lookup_root_sec(server, fhandle, info, | |
4104 | server->auth_info.flavors[i]); | |
4105 | if (status == -NFS4ERR_WRONGSEC || status == -EACCES) | |
4106 | continue; | |
4107 | break; | |
4108 | } | |
4109 | } else { | |
4110 | /* no flavors specified by user, try default list */ | |
4111 | for (i = 0; i < ARRAY_SIZE(flav_array); i++) { | |
4112 | status = nfs4_lookup_root_sec(server, fhandle, info, | |
4113 | flav_array[i]); | |
4114 | if (status == -NFS4ERR_WRONGSEC || status == -EACCES) | |
4115 | continue; | |
4116 | break; | |
4117 | } | |
8f70e95f | 4118 | } |
9a744ba3 | 4119 | |
fb8a5ba8 | 4120 | /* |
d3787af2 | 4121 | * -EACCES could mean that the user doesn't have correct permissions |
fb8a5ba8 BS |
4122 | * to access the mount. It could also mean that we tried to mount |
4123 | * with a gss auth flavor, but rpc.gssd isn't running. Either way, | |
4124 | * existing mount programs don't handle -EACCES very well so it should | |
4125 | * be mapped to -EPERM instead. | |
4126 | */ | |
4127 | if (status == -EACCES) | |
4128 | status = -EPERM; | |
801a16dc BS |
4129 | return status; |
4130 | } | |
4131 | ||
2ed4b95b CL |
4132 | /** |
4133 | * nfs4_proc_get_rootfh - get file handle for server's pseudoroot | |
4134 | * @server: initialized nfs_server handle | |
4135 | * @fhandle: we fill in the pseudo-fs root file handle | |
4136 | * @info: we fill in an FSINFO struct | |
5e6b1990 | 4137 | * @auth_probe: probe the auth flavours |
2ed4b95b CL |
4138 | * |
4139 | * Returns zero on success, or a negative errno. | |
801a16dc | 4140 | */ |
3028eb2b | 4141 | int nfs4_proc_get_rootfh(struct nfs_server *server, struct nfs_fh *fhandle, |
5e6b1990 TM |
4142 | struct nfs_fsinfo *info, |
4143 | bool auth_probe) | |
801a16dc | 4144 | { |
c7757074 | 4145 | int status = 0; |
2ed4b95b | 4146 | |
c7757074 | 4147 | if (!auth_probe) |
5e6b1990 | 4148 | status = nfs4_lookup_root(server, fhandle, info); |
c7757074 AP |
4149 | |
4150 | if (auth_probe || status == NFS4ERR_WRONGSEC) | |
698c937b TM |
4151 | status = server->nfs_client->cl_mvops->find_root_sec(server, |
4152 | fhandle, info); | |
2ed4b95b | 4153 | |
1da177e4 LT |
4154 | if (status == 0) |
4155 | status = nfs4_server_capabilities(server, fhandle); | |
4156 | if (status == 0) | |
4157 | status = nfs4_do_fsinfo(server, fhandle, info); | |
2ed4b95b | 4158 | |
c12e87f4 | 4159 | return nfs4_map_errors(status); |
1da177e4 LT |
4160 | } |
4161 | ||
bae36241 BS |
4162 | static int nfs4_proc_get_root(struct nfs_server *server, struct nfs_fh *mntfh, |
4163 | struct nfs_fsinfo *info) | |
4164 | { | |
4165 | int error; | |
4166 | struct nfs_fattr *fattr = info->fattr; | |
779df6a5 | 4167 | struct nfs4_label *label = fattr->label; |
bae36241 BS |
4168 | |
4169 | error = nfs4_server_capabilities(server, mntfh); | |
4170 | if (error < 0) { | |
4171 | dprintk("nfs4_get_root: getcaps error = %d\n", -error); | |
4172 | return error; | |
4173 | } | |
4174 | ||
a841b54d | 4175 | error = nfs4_proc_getattr(server, mntfh, fattr, label, NULL); |
bae36241 BS |
4176 | if (error < 0) { |
4177 | dprintk("nfs4_get_root: getattr error = %d\n", -error); | |
779df6a5 | 4178 | goto out; |
bae36241 BS |
4179 | } |
4180 | ||
4181 | if (fattr->valid & NFS_ATTR_FATTR_FSID && | |
4182 | !nfs_fsid_equal(&server->fsid, &fattr->fsid)) | |
4183 | memcpy(&server->fsid, &fattr->fsid, sizeof(server->fsid)); | |
4184 | ||
779df6a5 | 4185 | out: |
bae36241 BS |
4186 | return error; |
4187 | } | |
4188 | ||
6b97fd3d MN |
4189 | /* |
4190 | * Get locations and (maybe) other attributes of a referral. | |
4191 | * Note that we'll actually follow the referral later when | |
4192 | * we detect fsid mismatch in inode revalidation | |
4193 | */ | |
f05d147f BS |
4194 | static int nfs4_get_referral(struct rpc_clnt *client, struct inode *dir, |
4195 | const struct qstr *name, struct nfs_fattr *fattr, | |
4196 | struct nfs_fh *fhandle) | |
6b97fd3d MN |
4197 | { |
4198 | int status = -ENOMEM; | |
4199 | struct page *page = NULL; | |
4200 | struct nfs4_fs_locations *locations = NULL; | |
6b97fd3d MN |
4201 | |
4202 | page = alloc_page(GFP_KERNEL); | |
4203 | if (page == NULL) | |
4204 | goto out; | |
4205 | locations = kmalloc(sizeof(struct nfs4_fs_locations), GFP_KERNEL); | |
4206 | if (locations == NULL) | |
4207 | goto out; | |
4208 | ||
f05d147f | 4209 | status = nfs4_proc_fs_locations(client, dir, name, locations, page); |
6b97fd3d MN |
4210 | if (status != 0) |
4211 | goto out; | |
519ae255 CL |
4212 | |
4213 | /* | |
4214 | * If the fsid didn't change, this is a migration event, not a | |
4215 | * referral. Cause us to drop into the exception handler, which | |
4216 | * will kick off migration recovery. | |
4217 | */ | |
6b97fd3d | 4218 | if (nfs_fsid_equal(&NFS_SERVER(dir)->fsid, &locations->fattr.fsid)) { |
533eb461 AA |
4219 | dprintk("%s: server did not return a different fsid for" |
4220 | " a referral at %s\n", __func__, name->name); | |
519ae255 | 4221 | status = -NFS4ERR_MOVED; |
6b97fd3d MN |
4222 | goto out; |
4223 | } | |
533eb461 AA |
4224 | /* Fixup attributes for the nfs_lookup() call to nfs_fhget() */ |
4225 | nfs_fixup_referral_attributes(&locations->fattr); | |
6b97fd3d | 4226 | |
533eb461 | 4227 | /* replace the lookup nfs_fattr with the locations nfs_fattr */ |
6b97fd3d | 4228 | memcpy(fattr, &locations->fattr, sizeof(struct nfs_fattr)); |
6b97fd3d MN |
4229 | memset(fhandle, 0, sizeof(struct nfs_fh)); |
4230 | out: | |
4231 | if (page) | |
4232 | __free_page(page); | |
5d7ca35a | 4233 | kfree(locations); |
6b97fd3d MN |
4234 | return status; |
4235 | } | |
4236 | ||
1775fd3e | 4237 | static int _nfs4_proc_getattr(struct nfs_server *server, struct nfs_fh *fhandle, |
a841b54d TM |
4238 | struct nfs_fattr *fattr, struct nfs4_label *label, |
4239 | struct inode *inode) | |
1da177e4 | 4240 | { |
771734f2 | 4241 | __u32 bitmask[NFS4_BITMASK_SZ]; |
1da177e4 LT |
4242 | struct nfs4_getattr_arg args = { |
4243 | .fh = fhandle, | |
771734f2 | 4244 | .bitmask = bitmask, |
1da177e4 LT |
4245 | }; |
4246 | struct nfs4_getattr_res res = { | |
4247 | .fattr = fattr, | |
1775fd3e | 4248 | .label = label, |
1da177e4 LT |
4249 | .server = server, |
4250 | }; | |
4251 | struct rpc_message msg = { | |
4252 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GETATTR], | |
4253 | .rpc_argp = &args, | |
4254 | .rpc_resp = &res, | |
4255 | }; | |
c74dfe97 TM |
4256 | unsigned short task_flags = 0; |
4257 | ||
85e39fee OK |
4258 | if (nfs4_has_session(server->nfs_client)) |
4259 | task_flags = RPC_TASK_MOVEABLE; | |
4260 | ||
c74dfe97 TM |
4261 | /* Is this is an attribute revalidation, subject to softreval? */ |
4262 | if (inode && (server->flags & NFS_MOUNT_SOFTREVAL)) | |
4263 | task_flags |= RPC_TASK_TIMEOUT; | |
aa9c2669 | 4264 | |
a71029b8 | 4265 | nfs4_bitmap_copy_adjust(bitmask, nfs4_bitmask(server, label), inode, 0); |
0e574af1 | 4266 | nfs_fattr_init(fattr); |
c74dfe97 TM |
4267 | nfs4_init_sequence(&args.seq_args, &res.seq_res, 0, 0); |
4268 | return nfs4_do_call_sync(server->client, server, &msg, | |
4269 | &args.seq_args, &res.seq_res, task_flags); | |
1da177e4 LT |
4270 | } |
4271 | ||
ec4b0925 | 4272 | int nfs4_proc_getattr(struct nfs_server *server, struct nfs_fh *fhandle, |
a841b54d TM |
4273 | struct nfs_fattr *fattr, struct nfs4_label *label, |
4274 | struct inode *inode) | |
1da177e4 | 4275 | { |
0688e64b TM |
4276 | struct nfs4_exception exception = { |
4277 | .interruptible = true, | |
4278 | }; | |
1da177e4 LT |
4279 | int err; |
4280 | do { | |
a841b54d | 4281 | err = _nfs4_proc_getattr(server, fhandle, fattr, label, inode); |
b5f875a9 TM |
4282 | trace_nfs4_getattr(server, fhandle, fattr, err); |
4283 | err = nfs4_handle_exception(server, err, | |
1da177e4 LT |
4284 | &exception); |
4285 | } while (exception.retry); | |
4286 | return err; | |
4287 | } | |
4288 | ||
4289 | /* | |
4290 | * The file is not closed if it is opened due to the a request to change | |
4291 | * the size of the file. The open call will not be needed once the | |
4292 | * VFS layer lookup-intents are implemented. | |
4293 | * | |
4294 | * Close is called when the inode is destroyed. | |
4295 | * If we haven't opened the file for O_WRONLY, we | |
4296 | * need to in the size_change case to obtain a stateid. | |
4297 | * | |
4298 | * Got race? | |
4299 | * Because OPEN is always done by name in nfsv4, it is | |
4300 | * possible that we opened a different file by the same | |
4301 | * name. We can recognize this race condition, but we | |
4302 | * can't do anything about it besides returning an error. | |
4303 | * | |
4304 | * This will be fixed with VFS changes (lookup-intent). | |
4305 | */ | |
4306 | static int | |
4307 | nfs4_proc_setattr(struct dentry *dentry, struct nfs_fattr *fattr, | |
4308 | struct iattr *sattr) | |
4309 | { | |
2b0143b5 | 4310 | struct inode *inode = d_inode(dentry); |
a52458b4 | 4311 | const struct cred *cred = NULL; |
29b59f94 | 4312 | struct nfs_open_context *ctx = NULL; |
14c43f76 | 4313 | struct nfs4_label *label = NULL; |
1da177e4 LT |
4314 | int status; |
4315 | ||
88ac815c PT |
4316 | if (pnfs_ld_layoutret_on_setattr(inode) && |
4317 | sattr->ia_valid & ATTR_SIZE && | |
4318 | sattr->ia_size < i_size_read(inode)) | |
24028672 | 4319 | pnfs_commit_and_return_layout(inode); |
8a1636c4 | 4320 | |
0e574af1 | 4321 | nfs_fattr_init(fattr); |
1da177e4 | 4322 | |
2669940d AA |
4323 | /* Deal with open(O_TRUNC) */ |
4324 | if (sattr->ia_valid & ATTR_OPEN) | |
cc7936f9 | 4325 | sattr->ia_valid &= ~(ATTR_MTIME|ATTR_CTIME); |
2669940d AA |
4326 | |
4327 | /* Optimization: if the end result is no change, don't RPC */ | |
cc7936f9 | 4328 | if ((sattr->ia_valid & ~(ATTR_FILE|ATTR_OPEN)) == 0) |
2669940d AA |
4329 | return 0; |
4330 | ||
d530838b | 4331 | /* Search for an existing open(O_WRITE) file */ |
659bfcd6 | 4332 | if (sattr->ia_valid & ATTR_FILE) { |
659bfcd6 TM |
4333 | |
4334 | ctx = nfs_file_open_context(sattr->ia_file); | |
29b59f94 | 4335 | if (ctx) |
504e5189 | 4336 | cred = ctx->cred; |
659bfcd6 | 4337 | } |
08e9eac4 | 4338 | |
14c43f76 DQ |
4339 | label = nfs4_label_alloc(NFS_SERVER(inode), GFP_KERNEL); |
4340 | if (IS_ERR(label)) | |
4341 | return PTR_ERR(label); | |
4342 | ||
199366f0 TM |
4343 | /* Return any delegations if we're going to change ACLs */ |
4344 | if ((sattr->ia_valid & (ATTR_MODE|ATTR_UID|ATTR_GID)) != 0) | |
c01d3645 | 4345 | nfs4_inode_make_writeable(inode); |
199366f0 | 4346 | |
29b59f94 | 4347 | status = nfs4_do_setattr(inode, cred, fattr, sattr, ctx, NULL, label); |
aa9c2669 | 4348 | if (status == 0) { |
f044636d | 4349 | nfs_setattr_update_inode(inode, sattr, fattr); |
aa9c2669 DQ |
4350 | nfs_setsecurity(inode, fattr, label); |
4351 | } | |
14c43f76 | 4352 | nfs4_label_free(label); |
1da177e4 LT |
4353 | return status; |
4354 | } | |
4355 | ||
0c2e53f1 | 4356 | static int _nfs4_proc_lookup(struct rpc_clnt *clnt, struct inode *dir, |
f7b37b8b | 4357 | struct dentry *dentry, struct nfs_fh *fhandle, |
1775fd3e | 4358 | struct nfs_fattr *fattr, struct nfs4_label *label) |
2b3de441 | 4359 | { |
0c2e53f1 | 4360 | struct nfs_server *server = NFS_SERVER(dir); |
2b3de441 DH |
4361 | int status; |
4362 | struct nfs4_lookup_arg args = { | |
4363 | .bitmask = server->attr_bitmask, | |
0c2e53f1 | 4364 | .dir_fh = NFS_FH(dir), |
f7b37b8b | 4365 | .name = &dentry->d_name, |
2b3de441 DH |
4366 | }; |
4367 | struct nfs4_lookup_res res = { | |
4368 | .server = server, | |
4369 | .fattr = fattr, | |
aa9c2669 | 4370 | .label = label, |
2b3de441 DH |
4371 | .fh = fhandle, |
4372 | }; | |
4373 | struct rpc_message msg = { | |
4374 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOOKUP], | |
4375 | .rpc_argp = &args, | |
4376 | .rpc_resp = &res, | |
4377 | }; | |
f7b37b8b TM |
4378 | unsigned short task_flags = 0; |
4379 | ||
85e39fee OK |
4380 | if (server->nfs_client->cl_minorversion) |
4381 | task_flags = RPC_TASK_MOVEABLE; | |
4382 | ||
f7b37b8b TM |
4383 | /* Is this is an attribute revalidation, subject to softreval? */ |
4384 | if (nfs_lookup_is_soft_revalidate(dentry)) | |
4385 | task_flags |= RPC_TASK_TIMEOUT; | |
2b3de441 | 4386 | |
aa9c2669 DQ |
4387 | args.bitmask = nfs4_bitmask(server, label); |
4388 | ||
2b3de441 DH |
4389 | nfs_fattr_init(fattr); |
4390 | ||
f7b37b8b TM |
4391 | dprintk("NFS call lookup %pd2\n", dentry); |
4392 | nfs4_init_sequence(&args.seq_args, &res.seq_res, 0, 0); | |
4393 | status = nfs4_do_call_sync(clnt, server, &msg, | |
4394 | &args.seq_args, &res.seq_res, task_flags); | |
1da177e4 LT |
4395 | dprintk("NFS reply lookup: %d\n", status); |
4396 | return status; | |
4397 | } | |
4398 | ||
72de53ec | 4399 | static void nfs_fixup_secinfo_attributes(struct nfs_fattr *fattr) |
7ebb9315 | 4400 | { |
7ebb9315 | 4401 | fattr->valid |= NFS_ATTR_FATTR_TYPE | NFS_ATTR_FATTR_MODE | |
72de53ec | 4402 | NFS_ATTR_FATTR_NLINK | NFS_ATTR_FATTR_MOUNTPOINT; |
7ebb9315 BS |
4403 | fattr->mode = S_IFDIR | S_IRUGO | S_IXUGO; |
4404 | fattr->nlink = 2; | |
4405 | } | |
4406 | ||
72de53ec | 4407 | static int nfs4_proc_lookup_common(struct rpc_clnt **clnt, struct inode *dir, |
f7b37b8b | 4408 | struct dentry *dentry, struct nfs_fh *fhandle, |
1775fd3e | 4409 | struct nfs_fattr *fattr, struct nfs4_label *label) |
1da177e4 | 4410 | { |
0688e64b TM |
4411 | struct nfs4_exception exception = { |
4412 | .interruptible = true, | |
4413 | }; | |
72de53ec | 4414 | struct rpc_clnt *client = *clnt; |
f7b37b8b | 4415 | const struct qstr *name = &dentry->d_name; |
1da177e4 LT |
4416 | int err; |
4417 | do { | |
f7b37b8b | 4418 | err = _nfs4_proc_lookup(client, dir, dentry, fhandle, fattr, label); |
078ea3df | 4419 | trace_nfs4_lookup(dir, name, err); |
72de53ec | 4420 | switch (err) { |
08ef7bd3 | 4421 | case -NFS4ERR_BADNAME: |
72de53ec BS |
4422 | err = -ENOENT; |
4423 | goto out; | |
0c2e53f1 | 4424 | case -NFS4ERR_MOVED: |
f05d147f | 4425 | err = nfs4_get_referral(client, dir, name, fattr, fhandle); |
c86c90c6 DM |
4426 | if (err == -NFS4ERR_MOVED) |
4427 | err = nfs4_handle_exception(NFS_SERVER(dir), err, &exception); | |
72de53ec | 4428 | goto out; |
0c2e53f1 | 4429 | case -NFS4ERR_WRONGSEC: |
72de53ec BS |
4430 | err = -EPERM; |
4431 | if (client != *clnt) | |
4432 | goto out; | |
66b06860 | 4433 | client = nfs4_negotiate_security(client, dir, name); |
72de53ec BS |
4434 | if (IS_ERR(client)) |
4435 | return PTR_ERR(client); | |
4436 | ||
4437 | exception.retry = 1; | |
4438 | break; | |
4439 | default: | |
4440 | err = nfs4_handle_exception(NFS_SERVER(dir), err, &exception); | |
0c2e53f1 | 4441 | } |
1da177e4 | 4442 | } while (exception.retry); |
72de53ec BS |
4443 | |
4444 | out: | |
4445 | if (err == 0) | |
4446 | *clnt = client; | |
4447 | else if (client != *clnt) | |
4448 | rpc_shutdown_client(client); | |
4449 | ||
1da177e4 LT |
4450 | return err; |
4451 | } | |
4452 | ||
f7b37b8b | 4453 | static int nfs4_proc_lookup(struct inode *dir, struct dentry *dentry, |
1775fd3e DQ |
4454 | struct nfs_fh *fhandle, struct nfs_fattr *fattr, |
4455 | struct nfs4_label *label) | |
72de53ec BS |
4456 | { |
4457 | int status; | |
4458 | struct rpc_clnt *client = NFS_CLIENT(dir); | |
4459 | ||
f7b37b8b | 4460 | status = nfs4_proc_lookup_common(&client, dir, dentry, fhandle, fattr, label); |
72de53ec BS |
4461 | if (client != NFS_CLIENT(dir)) { |
4462 | rpc_shutdown_client(client); | |
4463 | nfs_fixup_secinfo_attributes(fattr); | |
4464 | } | |
4465 | return status; | |
4466 | } | |
4467 | ||
f05d147f | 4468 | struct rpc_clnt * |
f7b37b8b | 4469 | nfs4_proc_lookup_mountpoint(struct inode *dir, struct dentry *dentry, |
f05d147f BS |
4470 | struct nfs_fh *fhandle, struct nfs_fattr *fattr) |
4471 | { | |
b72888cb | 4472 | struct rpc_clnt *client = NFS_CLIENT(dir); |
f05d147f | 4473 | int status; |
f05d147f | 4474 | |
f7b37b8b | 4475 | status = nfs4_proc_lookup_common(&client, dir, dentry, fhandle, fattr, NULL); |
b72888cb | 4476 | if (status < 0) |
f05d147f | 4477 | return ERR_PTR(status); |
b72888cb | 4478 | return (client == NFS_CLIENT(dir)) ? rpc_clone_client(client) : client; |
f05d147f BS |
4479 | } |
4480 | ||
5b5faaf6 JL |
4481 | static int _nfs4_proc_lookupp(struct inode *inode, |
4482 | struct nfs_fh *fhandle, struct nfs_fattr *fattr, | |
4483 | struct nfs4_label *label) | |
4484 | { | |
4485 | struct rpc_clnt *clnt = NFS_CLIENT(inode); | |
4486 | struct nfs_server *server = NFS_SERVER(inode); | |
4487 | int status; | |
4488 | struct nfs4_lookupp_arg args = { | |
4489 | .bitmask = server->attr_bitmask, | |
4490 | .fh = NFS_FH(inode), | |
4491 | }; | |
4492 | struct nfs4_lookupp_res res = { | |
4493 | .server = server, | |
4494 | .fattr = fattr, | |
4495 | .label = label, | |
4496 | .fh = fhandle, | |
4497 | }; | |
4498 | struct rpc_message msg = { | |
4499 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOOKUPP], | |
4500 | .rpc_argp = &args, | |
4501 | .rpc_resp = &res, | |
4502 | }; | |
76998ebb TM |
4503 | unsigned short task_flags = 0; |
4504 | ||
4505 | if (NFS_SERVER(inode)->flags & NFS_MOUNT_SOFTREVAL) | |
4506 | task_flags |= RPC_TASK_TIMEOUT; | |
5b5faaf6 JL |
4507 | |
4508 | args.bitmask = nfs4_bitmask(server, label); | |
4509 | ||
4510 | nfs_fattr_init(fattr); | |
4511 | ||
4512 | dprintk("NFS call lookupp ino=0x%lx\n", inode->i_ino); | |
4513 | status = nfs4_call_sync(clnt, server, &msg, &args.seq_args, | |
76998ebb | 4514 | &res.seq_res, task_flags); |
5b5faaf6 JL |
4515 | dprintk("NFS reply lookupp: %d\n", status); |
4516 | return status; | |
4517 | } | |
4518 | ||
4519 | static int nfs4_proc_lookupp(struct inode *inode, struct nfs_fh *fhandle, | |
4520 | struct nfs_fattr *fattr, struct nfs4_label *label) | |
4521 | { | |
0688e64b TM |
4522 | struct nfs4_exception exception = { |
4523 | .interruptible = true, | |
4524 | }; | |
5b5faaf6 JL |
4525 | int err; |
4526 | do { | |
4527 | err = _nfs4_proc_lookupp(inode, fhandle, fattr, label); | |
4528 | trace_nfs4_lookupp(inode, err); | |
4529 | err = nfs4_handle_exception(NFS_SERVER(inode), err, | |
4530 | &exception); | |
4531 | } while (exception.retry); | |
4532 | return err; | |
4533 | } | |
4534 | ||
1da177e4 LT |
4535 | static int _nfs4_proc_access(struct inode *inode, struct nfs_access_entry *entry) |
4536 | { | |
76b32999 | 4537 | struct nfs_server *server = NFS_SERVER(inode); |
1da177e4 LT |
4538 | struct nfs4_accessargs args = { |
4539 | .fh = NFS_FH(inode), | |
1750d929 | 4540 | .access = entry->mask, |
76b32999 TM |
4541 | }; |
4542 | struct nfs4_accessres res = { | |
4543 | .server = server, | |
1da177e4 | 4544 | }; |
1da177e4 LT |
4545 | struct rpc_message msg = { |
4546 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_ACCESS], | |
4547 | .rpc_argp = &args, | |
4548 | .rpc_resp = &res, | |
4549 | .rpc_cred = entry->cred, | |
4550 | }; | |
aa9c2669 | 4551 | int status = 0; |
1da177e4 | 4552 | |
7c672654 | 4553 | if (!nfs4_have_delegation(inode, FMODE_READ)) { |
8bcbe7d9 TM |
4554 | res.fattr = nfs_alloc_fattr(); |
4555 | if (res.fattr == NULL) | |
4556 | return -ENOMEM; | |
4557 | args.bitmask = server->cache_consistency_bitmask; | |
4558 | } | |
7c513058 | 4559 | status = nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 | 4560 | if (!status) { |
6168f62c | 4561 | nfs_access_set_mask(entry, res.access); |
8bcbe7d9 TM |
4562 | if (res.fattr) |
4563 | nfs_refresh_inode(inode, res.fattr); | |
1da177e4 | 4564 | } |
c407d41a | 4565 | nfs_free_fattr(res.fattr); |
1da177e4 LT |
4566 | return status; |
4567 | } | |
4568 | ||
4569 | static int nfs4_proc_access(struct inode *inode, struct nfs_access_entry *entry) | |
4570 | { | |
0688e64b TM |
4571 | struct nfs4_exception exception = { |
4572 | .interruptible = true, | |
4573 | }; | |
1da177e4 LT |
4574 | int err; |
4575 | do { | |
c1578b76 TM |
4576 | err = _nfs4_proc_access(inode, entry); |
4577 | trace_nfs4_access(inode, err); | |
4578 | err = nfs4_handle_exception(NFS_SERVER(inode), err, | |
1da177e4 LT |
4579 | &exception); |
4580 | } while (exception.retry); | |
4581 | return err; | |
4582 | } | |
4583 | ||
4584 | /* | |
4585 | * TODO: For the time being, we don't try to get any attributes | |
4586 | * along with any of the zero-copy operations READ, READDIR, | |
4587 | * READLINK, WRITE. | |
4588 | * | |
4589 | * In the case of the first three, we want to put the GETATTR | |
4590 | * after the read-type operation -- this is because it is hard | |
4591 | * to predict the length of a GETATTR response in v4, and thus | |
4592 | * align the READ data correctly. This means that the GETATTR | |
4593 | * may end up partially falling into the page cache, and we should | |
4594 | * shift it into the 'tail' of the xdr_buf before processing. | |
4595 | * To do this efficiently, we need to know the total length | |
4596 | * of data received, which doesn't seem to be available outside | |
4597 | * of the RPC layer. | |
4598 | * | |
4599 | * In the case of WRITE, we also want to put the GETATTR after | |
4600 | * the operation -- in this case because we want to make sure | |
140150db | 4601 | * we get the post-operation mtime and size. |
1da177e4 LT |
4602 | * |
4603 | * Both of these changes to the XDR layer would in fact be quite | |
4604 | * minor, but I decided to leave them for a subsequent patch. | |
4605 | */ | |
4606 | static int _nfs4_proc_readlink(struct inode *inode, struct page *page, | |
4607 | unsigned int pgbase, unsigned int pglen) | |
4608 | { | |
4609 | struct nfs4_readlink args = { | |
4610 | .fh = NFS_FH(inode), | |
4611 | .pgbase = pgbase, | |
4612 | .pglen = pglen, | |
4613 | .pages = &page, | |
4614 | }; | |
f50c7000 | 4615 | struct nfs4_readlink_res res; |
1da177e4 LT |
4616 | struct rpc_message msg = { |
4617 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_READLINK], | |
4618 | .rpc_argp = &args, | |
f50c7000 | 4619 | .rpc_resp = &res, |
1da177e4 LT |
4620 | }; |
4621 | ||
7c513058 | 4622 | return nfs4_call_sync(NFS_SERVER(inode)->client, NFS_SERVER(inode), &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
4623 | } |
4624 | ||
4625 | static int nfs4_proc_readlink(struct inode *inode, struct page *page, | |
4626 | unsigned int pgbase, unsigned int pglen) | |
4627 | { | |
0688e64b TM |
4628 | struct nfs4_exception exception = { |
4629 | .interruptible = true, | |
4630 | }; | |
1da177e4 LT |
4631 | int err; |
4632 | do { | |
c1578b76 TM |
4633 | err = _nfs4_proc_readlink(inode, page, pgbase, pglen); |
4634 | trace_nfs4_readlink(inode, err); | |
4635 | err = nfs4_handle_exception(NFS_SERVER(inode), err, | |
1da177e4 LT |
4636 | &exception); |
4637 | } while (exception.retry); | |
4638 | return err; | |
4639 | } | |
4640 | ||
1da177e4 | 4641 | /* |
8867fe58 | 4642 | * This is just for mknod. open(O_CREAT) will always do ->open_context(). |
1da177e4 | 4643 | */ |
1da177e4 LT |
4644 | static int |
4645 | nfs4_proc_create(struct inode *dir, struct dentry *dentry, struct iattr *sattr, | |
8867fe58 | 4646 | int flags) |
1da177e4 | 4647 | { |
dff25ddb | 4648 | struct nfs_server *server = NFS_SERVER(dir); |
aa9c2669 | 4649 | struct nfs4_label l, *ilabel = NULL; |
8867fe58 | 4650 | struct nfs_open_context *ctx; |
1da177e4 | 4651 | struct nfs4_state *state; |
1da177e4 LT |
4652 | int status = 0; |
4653 | ||
532d4def | 4654 | ctx = alloc_nfs_open_context(dentry, FMODE_READ, NULL); |
8867fe58 MS |
4655 | if (IS_ERR(ctx)) |
4656 | return PTR_ERR(ctx); | |
4657 | ||
aa9c2669 DQ |
4658 | ilabel = nfs4_label_init_security(dir, dentry, sattr, &l); |
4659 | ||
dff25ddb AG |
4660 | if (!(server->attr_bitmask[2] & FATTR4_WORD2_MODE_UMASK)) |
4661 | sattr->ia_mode &= ~current_umask(); | |
c5c3fb5f | 4662 | state = nfs4_do_open(dir, ctx, flags, sattr, ilabel, NULL); |
1da177e4 LT |
4663 | if (IS_ERR(state)) { |
4664 | status = PTR_ERR(state); | |
c0204fd2 | 4665 | goto out; |
1da177e4 | 4666 | } |
1da177e4 | 4667 | out: |
aa9c2669 | 4668 | nfs4_label_release_security(ilabel); |
8867fe58 | 4669 | put_nfs_open_context(ctx); |
1da177e4 LT |
4670 | return status; |
4671 | } | |
4672 | ||
3c591175 TM |
4673 | static int |
4674 | _nfs4_proc_remove(struct inode *dir, const struct qstr *name, u32 ftype) | |
1da177e4 | 4675 | { |
16e42959 | 4676 | struct nfs_server *server = NFS_SERVER(dir); |
4fdc17b2 | 4677 | struct nfs_removeargs args = { |
1da177e4 | 4678 | .fh = NFS_FH(dir), |
26fe5750 | 4679 | .name = *name, |
16e42959 | 4680 | }; |
4fdc17b2 | 4681 | struct nfs_removeres res = { |
16e42959 | 4682 | .server = server, |
1da177e4 | 4683 | }; |
1da177e4 | 4684 | struct rpc_message msg = { |
4fdc17b2 TM |
4685 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_REMOVE], |
4686 | .rpc_argp = &args, | |
4687 | .rpc_resp = &res, | |
1da177e4 | 4688 | }; |
d3129ef6 | 4689 | unsigned long timestamp = jiffies; |
778d2817 | 4690 | int status; |
1da177e4 | 4691 | |
7c513058 | 4692 | status = nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 1); |
3c591175 TM |
4693 | if (status == 0) { |
4694 | spin_lock(&dir->i_lock); | |
3c591175 TM |
4695 | /* Removing a directory decrements nlink in the parent */ |
4696 | if (ftype == NF4DIR && dir->i_nlink > 2) | |
4697 | nfs4_dec_nlink_locked(dir); | |
82eae5a4 TM |
4698 | nfs4_update_changeattr_locked(dir, &res.cinfo, timestamp, |
4699 | NFS_INO_INVALID_DATA); | |
3c591175 TM |
4700 | spin_unlock(&dir->i_lock); |
4701 | } | |
1da177e4 LT |
4702 | return status; |
4703 | } | |
4704 | ||
912678db | 4705 | static int nfs4_proc_remove(struct inode *dir, struct dentry *dentry) |
1da177e4 | 4706 | { |
0688e64b TM |
4707 | struct nfs4_exception exception = { |
4708 | .interruptible = true, | |
4709 | }; | |
912678db | 4710 | struct inode *inode = d_inode(dentry); |
1da177e4 | 4711 | int err; |
912678db | 4712 | |
c01d3645 TM |
4713 | if (inode) { |
4714 | if (inode->i_nlink == 1) | |
4715 | nfs4_inode_return_delegation(inode); | |
4716 | else | |
4717 | nfs4_inode_make_writeable(inode); | |
4718 | } | |
912678db | 4719 | do { |
3c591175 | 4720 | err = _nfs4_proc_remove(dir, &dentry->d_name, NF4REG); |
912678db TM |
4721 | trace_nfs4_remove(dir, &dentry->d_name, err); |
4722 | err = nfs4_handle_exception(NFS_SERVER(dir), err, | |
4723 | &exception); | |
4724 | } while (exception.retry); | |
4725 | return err; | |
4726 | } | |
4727 | ||
4728 | static int nfs4_proc_rmdir(struct inode *dir, const struct qstr *name) | |
4729 | { | |
0688e64b TM |
4730 | struct nfs4_exception exception = { |
4731 | .interruptible = true, | |
4732 | }; | |
912678db TM |
4733 | int err; |
4734 | ||
1da177e4 | 4735 | do { |
3c591175 | 4736 | err = _nfs4_proc_remove(dir, name, NF4DIR); |
078ea3df TM |
4737 | trace_nfs4_remove(dir, name, err); |
4738 | err = nfs4_handle_exception(NFS_SERVER(dir), err, | |
1da177e4 LT |
4739 | &exception); |
4740 | } while (exception.retry); | |
4741 | return err; | |
4742 | } | |
4743 | ||
ed7e9ad0 TM |
4744 | static void nfs4_proc_unlink_setup(struct rpc_message *msg, |
4745 | struct dentry *dentry, | |
4746 | struct inode *inode) | |
1da177e4 | 4747 | { |
e4eff1a6 TM |
4748 | struct nfs_removeargs *args = msg->rpc_argp; |
4749 | struct nfs_removeres *res = msg->rpc_resp; | |
1da177e4 | 4750 | |
977fcc2b | 4751 | res->server = NFS_SB(dentry->d_sb); |
1da177e4 | 4752 | msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_REMOVE]; |
fba83f34 | 4753 | nfs4_init_sequence(&args->seq_args, &res->seq_res, 1, 0); |
aa9c2669 DQ |
4754 | |
4755 | nfs_fattr_init(res->dir_attr); | |
977fcc2b TM |
4756 | |
4757 | if (inode) | |
4758 | nfs4_inode_return_delegation(inode); | |
1da177e4 LT |
4759 | } |
4760 | ||
34e137cc BS |
4761 | static void nfs4_proc_unlink_rpc_prepare(struct rpc_task *task, struct nfs_unlinkdata *data) |
4762 | { | |
42e1cca7 | 4763 | nfs4_setup_sequence(NFS_SB(data->dentry->d_sb)->nfs_client, |
d9afbd1b TM |
4764 | &data->args.seq_args, |
4765 | &data->res.seq_res, | |
4766 | task); | |
1da177e4 LT |
4767 | } |
4768 | ||
e4eff1a6 | 4769 | static int nfs4_proc_unlink_done(struct rpc_task *task, struct inode *dir) |
1da177e4 | 4770 | { |
078ea3df TM |
4771 | struct nfs_unlinkdata *data = task->tk_calldata; |
4772 | struct nfs_removeres *res = &data->res; | |
e4eff1a6 | 4773 | |
14516c3a TM |
4774 | if (!nfs4_sequence_done(task, &res->seq_res)) |
4775 | return 0; | |
8478eaa1 N |
4776 | if (nfs4_async_handle_error(task, res->server, NULL, |
4777 | &data->timeout) == -EAGAIN) | |
e4eff1a6 | 4778 | return 0; |
c40d52fe | 4779 | if (task->tk_status == 0) |
1b523ca9 FL |
4780 | nfs4_update_changeattr(dir, &res->cinfo, |
4781 | res->dir_attr->time_start, | |
4782 | NFS_INO_INVALID_DATA); | |
e4eff1a6 | 4783 | return 1; |
1da177e4 LT |
4784 | } |
4785 | ||
f2c2c552 TM |
4786 | static void nfs4_proc_rename_setup(struct rpc_message *msg, |
4787 | struct dentry *old_dentry, | |
4788 | struct dentry *new_dentry) | |
d3d4152a | 4789 | { |
d3d4152a JL |
4790 | struct nfs_renameargs *arg = msg->rpc_argp; |
4791 | struct nfs_renameres *res = msg->rpc_resp; | |
f2c2c552 TM |
4792 | struct inode *old_inode = d_inode(old_dentry); |
4793 | struct inode *new_inode = d_inode(new_dentry); | |
d3d4152a | 4794 | |
f2c2c552 | 4795 | if (old_inode) |
c01d3645 | 4796 | nfs4_inode_make_writeable(old_inode); |
f2c2c552 TM |
4797 | if (new_inode) |
4798 | nfs4_inode_return_delegation(new_inode); | |
d3d4152a | 4799 | msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RENAME]; |
f2c2c552 | 4800 | res->server = NFS_SB(old_dentry->d_sb); |
fba83f34 | 4801 | nfs4_init_sequence(&arg->seq_args, &res->seq_res, 1, 0); |
d3d4152a JL |
4802 | } |
4803 | ||
c6bfa1a1 BS |
4804 | static void nfs4_proc_rename_rpc_prepare(struct rpc_task *task, struct nfs_renamedata *data) |
4805 | { | |
42e1cca7 | 4806 | nfs4_setup_sequence(NFS_SERVER(data->old_dir)->nfs_client, |
d9afbd1b TM |
4807 | &data->args.seq_args, |
4808 | &data->res.seq_res, | |
4809 | task); | |
d3d4152a JL |
4810 | } |
4811 | ||
4812 | static int nfs4_proc_rename_done(struct rpc_task *task, struct inode *old_dir, | |
4813 | struct inode *new_dir) | |
4814 | { | |
fbc6f7c2 TM |
4815 | struct nfs_renamedata *data = task->tk_calldata; |
4816 | struct nfs_renameres *res = &data->res; | |
d3d4152a JL |
4817 | |
4818 | if (!nfs4_sequence_done(task, &res->seq_res)) | |
4819 | return 0; | |
8478eaa1 | 4820 | if (nfs4_async_handle_error(task, res->server, NULL, &data->timeout) == -EAGAIN) |
d3d4152a JL |
4821 | return 0; |
4822 | ||
c733c49c | 4823 | if (task->tk_status == 0) { |
5636ec4e TM |
4824 | if (new_dir != old_dir) { |
4825 | /* Note: If we moved a directory, nlink will change */ | |
1b523ca9 | 4826 | nfs4_update_changeattr(old_dir, &res->old_cinfo, |
5636ec4e | 4827 | res->old_fattr->time_start, |
fabf2b34 | 4828 | NFS_INO_INVALID_NLINK | |
1b523ca9 FL |
4829 | NFS_INO_INVALID_DATA); |
4830 | nfs4_update_changeattr(new_dir, &res->new_cinfo, | |
5636ec4e | 4831 | res->new_fattr->time_start, |
fabf2b34 | 4832 | NFS_INO_INVALID_NLINK | |
1b523ca9 | 4833 | NFS_INO_INVALID_DATA); |
5636ec4e | 4834 | } else |
1b523ca9 | 4835 | nfs4_update_changeattr(old_dir, &res->old_cinfo, |
5636ec4e | 4836 | res->old_fattr->time_start, |
1b523ca9 | 4837 | NFS_INO_INVALID_DATA); |
c733c49c | 4838 | } |
d3d4152a JL |
4839 | return 1; |
4840 | } | |
4841 | ||
beffb8fe | 4842 | static int _nfs4_proc_link(struct inode *inode, struct inode *dir, const struct qstr *name) |
1da177e4 | 4843 | { |
91ba2eee | 4844 | struct nfs_server *server = NFS_SERVER(inode); |
2f28dc38 | 4845 | __u32 bitmask[NFS4_BITMASK_SZ]; |
1da177e4 LT |
4846 | struct nfs4_link_arg arg = { |
4847 | .fh = NFS_FH(inode), | |
4848 | .dir_fh = NFS_FH(dir), | |
4849 | .name = name, | |
2f28dc38 | 4850 | .bitmask = bitmask, |
91ba2eee | 4851 | }; |
91ba2eee TM |
4852 | struct nfs4_link_res res = { |
4853 | .server = server, | |
1775fd3e | 4854 | .label = NULL, |
1da177e4 | 4855 | }; |
1da177e4 LT |
4856 | struct rpc_message msg = { |
4857 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LINK], | |
4858 | .rpc_argp = &arg, | |
91ba2eee | 4859 | .rpc_resp = &res, |
1da177e4 | 4860 | }; |
136f2627 TM |
4861 | int status = -ENOMEM; |
4862 | ||
4863 | res.fattr = nfs_alloc_fattr(); | |
778d2817 | 4864 | if (res.fattr == NULL) |
136f2627 | 4865 | goto out; |
1da177e4 | 4866 | |
14c43f76 DQ |
4867 | res.label = nfs4_label_alloc(server, GFP_KERNEL); |
4868 | if (IS_ERR(res.label)) { | |
4869 | status = PTR_ERR(res.label); | |
4870 | goto out; | |
4871 | } | |
4872 | ||
c01d3645 | 4873 | nfs4_inode_make_writeable(inode); |
a71029b8 TM |
4874 | nfs4_bitmap_copy_adjust(bitmask, nfs4_bitmask(server, res.label), inode, |
4875 | NFS_INO_INVALID_CHANGE); | |
7c513058 | 4876 | status = nfs4_call_sync(server->client, server, &msg, &arg.seq_args, &res.seq_res, 1); |
91ba2eee | 4877 | if (!status) { |
1b523ca9 FL |
4878 | nfs4_update_changeattr(dir, &res.cinfo, res.fattr->time_start, |
4879 | NFS_INO_INVALID_DATA); | |
1301e421 | 4880 | nfs4_inc_nlink(inode); |
aa9c2669 DQ |
4881 | status = nfs_post_op_update_inode(inode, res.fattr); |
4882 | if (!status) | |
4883 | nfs_setsecurity(inode, res.fattr, res.label); | |
91ba2eee | 4884 | } |
14c43f76 DQ |
4885 | |
4886 | ||
4887 | nfs4_label_free(res.label); | |
4888 | ||
136f2627 | 4889 | out: |
136f2627 | 4890 | nfs_free_fattr(res.fattr); |
1da177e4 LT |
4891 | return status; |
4892 | } | |
4893 | ||
beffb8fe | 4894 | static int nfs4_proc_link(struct inode *inode, struct inode *dir, const struct qstr *name) |
1da177e4 | 4895 | { |
0688e64b TM |
4896 | struct nfs4_exception exception = { |
4897 | .interruptible = true, | |
4898 | }; | |
1da177e4 LT |
4899 | int err; |
4900 | do { | |
4901 | err = nfs4_handle_exception(NFS_SERVER(inode), | |
4902 | _nfs4_proc_link(inode, dir, name), | |
4903 | &exception); | |
4904 | } while (exception.retry); | |
4905 | return err; | |
4906 | } | |
4907 | ||
57dc9a57 TM |
4908 | struct nfs4_createdata { |
4909 | struct rpc_message msg; | |
4910 | struct nfs4_create_arg arg; | |
4911 | struct nfs4_create_res res; | |
4912 | struct nfs_fh fh; | |
4913 | struct nfs_fattr fattr; | |
1775fd3e | 4914 | struct nfs4_label *label; |
57dc9a57 TM |
4915 | }; |
4916 | ||
4917 | static struct nfs4_createdata *nfs4_alloc_createdata(struct inode *dir, | |
beffb8fe | 4918 | const struct qstr *name, struct iattr *sattr, u32 ftype) |
57dc9a57 TM |
4919 | { |
4920 | struct nfs4_createdata *data; | |
4921 | ||
4922 | data = kzalloc(sizeof(*data), GFP_KERNEL); | |
4923 | if (data != NULL) { | |
4924 | struct nfs_server *server = NFS_SERVER(dir); | |
4925 | ||
14c43f76 DQ |
4926 | data->label = nfs4_label_alloc(server, GFP_KERNEL); |
4927 | if (IS_ERR(data->label)) | |
4928 | goto out_free; | |
4929 | ||
57dc9a57 TM |
4930 | data->msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_CREATE]; |
4931 | data->msg.rpc_argp = &data->arg; | |
4932 | data->msg.rpc_resp = &data->res; | |
4933 | data->arg.dir_fh = NFS_FH(dir); | |
4934 | data->arg.server = server; | |
4935 | data->arg.name = name; | |
4936 | data->arg.attrs = sattr; | |
4937 | data->arg.ftype = ftype; | |
aa9c2669 | 4938 | data->arg.bitmask = nfs4_bitmask(server, data->label); |
dff25ddb | 4939 | data->arg.umask = current_umask(); |
57dc9a57 TM |
4940 | data->res.server = server; |
4941 | data->res.fh = &data->fh; | |
4942 | data->res.fattr = &data->fattr; | |
1775fd3e | 4943 | data->res.label = data->label; |
57dc9a57 | 4944 | nfs_fattr_init(data->res.fattr); |
57dc9a57 TM |
4945 | } |
4946 | return data; | |
14c43f76 DQ |
4947 | out_free: |
4948 | kfree(data); | |
4949 | return NULL; | |
57dc9a57 TM |
4950 | } |
4951 | ||
4952 | static int nfs4_do_create(struct inode *dir, struct dentry *dentry, struct nfs4_createdata *data) | |
4953 | { | |
7c513058 | 4954 | int status = nfs4_call_sync(NFS_SERVER(dir)->client, NFS_SERVER(dir), &data->msg, |
e73b83f2 | 4955 | &data->arg.seq_args, &data->res.seq_res, 1); |
57dc9a57 | 4956 | if (status == 0) { |
3c591175 | 4957 | spin_lock(&dir->i_lock); |
3c591175 TM |
4958 | /* Creating a directory bumps nlink in the parent */ |
4959 | if (data->arg.ftype == NF4DIR) | |
4960 | nfs4_inc_nlink_locked(dir); | |
82eae5a4 TM |
4961 | nfs4_update_changeattr_locked(dir, &data->res.dir_cinfo, |
4962 | data->res.fattr->time_start, | |
4963 | NFS_INO_INVALID_DATA); | |
3c591175 | 4964 | spin_unlock(&dir->i_lock); |
1775fd3e | 4965 | status = nfs_instantiate(dentry, data->res.fh, data->res.fattr, data->res.label); |
57dc9a57 TM |
4966 | } |
4967 | return status; | |
4968 | } | |
4969 | ||
4970 | static void nfs4_free_createdata(struct nfs4_createdata *data) | |
4971 | { | |
14c43f76 | 4972 | nfs4_label_free(data->label); |
57dc9a57 TM |
4973 | kfree(data); |
4974 | } | |
4975 | ||
4f390c15 | 4976 | static int _nfs4_proc_symlink(struct inode *dir, struct dentry *dentry, |
1775fd3e DQ |
4977 | struct page *page, unsigned int len, struct iattr *sattr, |
4978 | struct nfs4_label *label) | |
1da177e4 | 4979 | { |
57dc9a57 TM |
4980 | struct nfs4_createdata *data; |
4981 | int status = -ENAMETOOLONG; | |
1da177e4 | 4982 | |
94a6d753 | 4983 | if (len > NFS4_MAXPATHLEN) |
57dc9a57 | 4984 | goto out; |
4f390c15 | 4985 | |
57dc9a57 TM |
4986 | status = -ENOMEM; |
4987 | data = nfs4_alloc_createdata(dir, &dentry->d_name, sattr, NF4LNK); | |
4988 | if (data == NULL) | |
4989 | goto out; | |
4990 | ||
4991 | data->msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SYMLINK]; | |
4992 | data->arg.u.symlink.pages = &page; | |
4993 | data->arg.u.symlink.len = len; | |
1775fd3e | 4994 | data->arg.label = label; |
1da177e4 | 4995 | |
57dc9a57 TM |
4996 | status = nfs4_do_create(dir, dentry, data); |
4997 | ||
4998 | nfs4_free_createdata(data); | |
4999 | out: | |
1da177e4 LT |
5000 | return status; |
5001 | } | |
5002 | ||
4f390c15 | 5003 | static int nfs4_proc_symlink(struct inode *dir, struct dentry *dentry, |
94a6d753 | 5004 | struct page *page, unsigned int len, struct iattr *sattr) |
1da177e4 | 5005 | { |
0688e64b TM |
5006 | struct nfs4_exception exception = { |
5007 | .interruptible = true, | |
5008 | }; | |
aa9c2669 | 5009 | struct nfs4_label l, *label = NULL; |
1da177e4 | 5010 | int err; |
aa9c2669 DQ |
5011 | |
5012 | label = nfs4_label_init_security(dir, dentry, sattr, &l); | |
5013 | ||
1da177e4 | 5014 | do { |
078ea3df TM |
5015 | err = _nfs4_proc_symlink(dir, dentry, page, len, sattr, label); |
5016 | trace_nfs4_symlink(dir, &dentry->d_name, err); | |
5017 | err = nfs4_handle_exception(NFS_SERVER(dir), err, | |
1da177e4 LT |
5018 | &exception); |
5019 | } while (exception.retry); | |
aa9c2669 DQ |
5020 | |
5021 | nfs4_label_release_security(label); | |
1da177e4 LT |
5022 | return err; |
5023 | } | |
5024 | ||
5025 | static int _nfs4_proc_mkdir(struct inode *dir, struct dentry *dentry, | |
1775fd3e | 5026 | struct iattr *sattr, struct nfs4_label *label) |
1da177e4 | 5027 | { |
57dc9a57 TM |
5028 | struct nfs4_createdata *data; |
5029 | int status = -ENOMEM; | |
1da177e4 | 5030 | |
57dc9a57 TM |
5031 | data = nfs4_alloc_createdata(dir, &dentry->d_name, sattr, NF4DIR); |
5032 | if (data == NULL) | |
5033 | goto out; | |
5034 | ||
1775fd3e | 5035 | data->arg.label = label; |
57dc9a57 TM |
5036 | status = nfs4_do_create(dir, dentry, data); |
5037 | ||
5038 | nfs4_free_createdata(data); | |
5039 | out: | |
1da177e4 LT |
5040 | return status; |
5041 | } | |
5042 | ||
5043 | static int nfs4_proc_mkdir(struct inode *dir, struct dentry *dentry, | |
5044 | struct iattr *sattr) | |
5045 | { | |
dff25ddb | 5046 | struct nfs_server *server = NFS_SERVER(dir); |
0688e64b TM |
5047 | struct nfs4_exception exception = { |
5048 | .interruptible = true, | |
5049 | }; | |
aa9c2669 | 5050 | struct nfs4_label l, *label = NULL; |
1da177e4 | 5051 | int err; |
a8a5da99 | 5052 | |
aa9c2669 DQ |
5053 | label = nfs4_label_init_security(dir, dentry, sattr, &l); |
5054 | ||
dff25ddb AG |
5055 | if (!(server->attr_bitmask[2] & FATTR4_WORD2_MODE_UMASK)) |
5056 | sattr->ia_mode &= ~current_umask(); | |
1da177e4 | 5057 | do { |
078ea3df TM |
5058 | err = _nfs4_proc_mkdir(dir, dentry, sattr, label); |
5059 | trace_nfs4_mkdir(dir, &dentry->d_name, err); | |
5060 | err = nfs4_handle_exception(NFS_SERVER(dir), err, | |
1da177e4 LT |
5061 | &exception); |
5062 | } while (exception.retry); | |
aa9c2669 DQ |
5063 | nfs4_label_release_security(label); |
5064 | ||
1da177e4 LT |
5065 | return err; |
5066 | } | |
5067 | ||
82e22a5e TM |
5068 | static int _nfs4_proc_readdir(struct nfs_readdir_arg *nr_arg, |
5069 | struct nfs_readdir_res *nr_res) | |
1da177e4 | 5070 | { |
82e22a5e | 5071 | struct inode *dir = d_inode(nr_arg->dentry); |
05ad9175 | 5072 | struct nfs_server *server = NFS_SERVER(dir); |
1da177e4 LT |
5073 | struct nfs4_readdir_arg args = { |
5074 | .fh = NFS_FH(dir), | |
82e22a5e | 5075 | .pages = nr_arg->pages, |
1da177e4 | 5076 | .pgbase = 0, |
82e22a5e TM |
5077 | .count = nr_arg->page_len, |
5078 | .plus = nr_arg->plus, | |
1da177e4 LT |
5079 | }; |
5080 | struct nfs4_readdir_res res; | |
5081 | struct rpc_message msg = { | |
5082 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_READDIR], | |
5083 | .rpc_argp = &args, | |
5084 | .rpc_resp = &res, | |
82e22a5e | 5085 | .rpc_cred = nr_arg->cred, |
1da177e4 LT |
5086 | }; |
5087 | int status; | |
5088 | ||
82e22a5e TM |
5089 | dprintk("%s: dentry = %pd2, cookie = %llu\n", __func__, |
5090 | nr_arg->dentry, (unsigned long long)nr_arg->cookie); | |
05ad9175 OK |
5091 | if (!(server->caps & NFS_CAP_SECURITY_LABEL)) |
5092 | args.bitmask = server->attr_bitmask_nl; | |
5093 | else | |
5094 | args.bitmask = server->attr_bitmask; | |
5095 | ||
82e22a5e | 5096 | nfs4_setup_readdir(nr_arg->cookie, nr_arg->verf, nr_arg->dentry, &args); |
1da177e4 | 5097 | res.pgbase = args.pgbase; |
05ad9175 OK |
5098 | status = nfs4_call_sync(server->client, server, &msg, &args.seq_args, |
5099 | &res.seq_res, 0); | |
ac396128 | 5100 | if (status >= 0) { |
82e22a5e | 5101 | memcpy(nr_res->verf, res.verifier.data, NFS4_VERIFIER_SIZE); |
ac396128 TM |
5102 | status += args.pgbase; |
5103 | } | |
c4812998 TM |
5104 | |
5105 | nfs_invalidate_atime(dir); | |
5106 | ||
3110ff80 | 5107 | dprintk("%s: returns %d\n", __func__, status); |
1da177e4 LT |
5108 | return status; |
5109 | } | |
5110 | ||
82e22a5e TM |
5111 | static int nfs4_proc_readdir(struct nfs_readdir_arg *arg, |
5112 | struct nfs_readdir_res *res) | |
1da177e4 | 5113 | { |
0688e64b TM |
5114 | struct nfs4_exception exception = { |
5115 | .interruptible = true, | |
5116 | }; | |
1da177e4 LT |
5117 | int err; |
5118 | do { | |
82e22a5e TM |
5119 | err = _nfs4_proc_readdir(arg, res); |
5120 | trace_nfs4_readdir(d_inode(arg->dentry), err); | |
5121 | err = nfs4_handle_exception(NFS_SERVER(d_inode(arg->dentry)), | |
5122 | err, &exception); | |
1da177e4 LT |
5123 | } while (exception.retry); |
5124 | return err; | |
5125 | } | |
5126 | ||
5127 | static int _nfs4_proc_mknod(struct inode *dir, struct dentry *dentry, | |
aa9c2669 | 5128 | struct iattr *sattr, struct nfs4_label *label, dev_t rdev) |
1da177e4 | 5129 | { |
57dc9a57 TM |
5130 | struct nfs4_createdata *data; |
5131 | int mode = sattr->ia_mode; | |
5132 | int status = -ENOMEM; | |
1da177e4 | 5133 | |
57dc9a57 TM |
5134 | data = nfs4_alloc_createdata(dir, &dentry->d_name, sattr, NF4SOCK); |
5135 | if (data == NULL) | |
5136 | goto out; | |
5137 | ||
1da177e4 | 5138 | if (S_ISFIFO(mode)) |
57dc9a57 | 5139 | data->arg.ftype = NF4FIFO; |
1da177e4 | 5140 | else if (S_ISBLK(mode)) { |
57dc9a57 TM |
5141 | data->arg.ftype = NF4BLK; |
5142 | data->arg.u.device.specdata1 = MAJOR(rdev); | |
5143 | data->arg.u.device.specdata2 = MINOR(rdev); | |
1da177e4 LT |
5144 | } |
5145 | else if (S_ISCHR(mode)) { | |
57dc9a57 TM |
5146 | data->arg.ftype = NF4CHR; |
5147 | data->arg.u.device.specdata1 = MAJOR(rdev); | |
5148 | data->arg.u.device.specdata2 = MINOR(rdev); | |
4ea8fed5 TM |
5149 | } else if (!S_ISSOCK(mode)) { |
5150 | status = -EINVAL; | |
5151 | goto out_free; | |
1da177e4 | 5152 | } |
1775fd3e | 5153 | |
aa9c2669 | 5154 | data->arg.label = label; |
57dc9a57 | 5155 | status = nfs4_do_create(dir, dentry, data); |
4ea8fed5 | 5156 | out_free: |
57dc9a57 TM |
5157 | nfs4_free_createdata(data); |
5158 | out: | |
1da177e4 LT |
5159 | return status; |
5160 | } | |
5161 | ||
5162 | static int nfs4_proc_mknod(struct inode *dir, struct dentry *dentry, | |
5163 | struct iattr *sattr, dev_t rdev) | |
5164 | { | |
dff25ddb | 5165 | struct nfs_server *server = NFS_SERVER(dir); |
0688e64b TM |
5166 | struct nfs4_exception exception = { |
5167 | .interruptible = true, | |
5168 | }; | |
aa9c2669 | 5169 | struct nfs4_label l, *label = NULL; |
1da177e4 | 5170 | int err; |
a8a5da99 | 5171 | |
aa9c2669 DQ |
5172 | label = nfs4_label_init_security(dir, dentry, sattr, &l); |
5173 | ||
dff25ddb AG |
5174 | if (!(server->attr_bitmask[2] & FATTR4_WORD2_MODE_UMASK)) |
5175 | sattr->ia_mode &= ~current_umask(); | |
1da177e4 | 5176 | do { |
078ea3df TM |
5177 | err = _nfs4_proc_mknod(dir, dentry, sattr, label, rdev); |
5178 | trace_nfs4_mknod(dir, &dentry->d_name, err); | |
5179 | err = nfs4_handle_exception(NFS_SERVER(dir), err, | |
1da177e4 LT |
5180 | &exception); |
5181 | } while (exception.retry); | |
aa9c2669 DQ |
5182 | |
5183 | nfs4_label_release_security(label); | |
5184 | ||
1da177e4 LT |
5185 | return err; |
5186 | } | |
5187 | ||
5188 | static int _nfs4_proc_statfs(struct nfs_server *server, struct nfs_fh *fhandle, | |
5189 | struct nfs_fsstat *fsstat) | |
5190 | { | |
5191 | struct nfs4_statfs_arg args = { | |
5192 | .fh = fhandle, | |
5193 | .bitmask = server->attr_bitmask, | |
5194 | }; | |
24ad148a BH |
5195 | struct nfs4_statfs_res res = { |
5196 | .fsstat = fsstat, | |
5197 | }; | |
1da177e4 LT |
5198 | struct rpc_message msg = { |
5199 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_STATFS], | |
5200 | .rpc_argp = &args, | |
24ad148a | 5201 | .rpc_resp = &res, |
1da177e4 LT |
5202 | }; |
5203 | ||
0e574af1 | 5204 | nfs_fattr_init(fsstat->fattr); |
7c513058 | 5205 | return nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
5206 | } |
5207 | ||
5208 | static int nfs4_proc_statfs(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fsstat *fsstat) | |
5209 | { | |
0688e64b TM |
5210 | struct nfs4_exception exception = { |
5211 | .interruptible = true, | |
5212 | }; | |
1da177e4 LT |
5213 | int err; |
5214 | do { | |
5215 | err = nfs4_handle_exception(server, | |
5216 | _nfs4_proc_statfs(server, fhandle, fsstat), | |
5217 | &exception); | |
5218 | } while (exception.retry); | |
5219 | return err; | |
5220 | } | |
5221 | ||
5222 | static int _nfs4_do_fsinfo(struct nfs_server *server, struct nfs_fh *fhandle, | |
5223 | struct nfs_fsinfo *fsinfo) | |
5224 | { | |
5225 | struct nfs4_fsinfo_arg args = { | |
5226 | .fh = fhandle, | |
5227 | .bitmask = server->attr_bitmask, | |
5228 | }; | |
3dda5e43 BH |
5229 | struct nfs4_fsinfo_res res = { |
5230 | .fsinfo = fsinfo, | |
5231 | }; | |
1da177e4 LT |
5232 | struct rpc_message msg = { |
5233 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_FSINFO], | |
5234 | .rpc_argp = &args, | |
3dda5e43 | 5235 | .rpc_resp = &res, |
1da177e4 LT |
5236 | }; |
5237 | ||
7c513058 | 5238 | return nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
5239 | } |
5240 | ||
5241 | static int nfs4_do_fsinfo(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fsinfo *fsinfo) | |
5242 | { | |
0688e64b TM |
5243 | struct nfs4_exception exception = { |
5244 | .interruptible = true, | |
5245 | }; | |
1da177e4 LT |
5246 | int err; |
5247 | ||
5248 | do { | |
83ca7f5a | 5249 | err = _nfs4_do_fsinfo(server, fhandle, fsinfo); |
b5f875a9 | 5250 | trace_nfs4_fsinfo(server, fhandle, fsinfo->fattr, err); |
83ca7f5a | 5251 | if (err == 0) { |
7dc2993a | 5252 | nfs4_set_lease_period(server->nfs_client, fsinfo->lease_time * HZ); |
83ca7f5a CL |
5253 | break; |
5254 | } | |
5255 | err = nfs4_handle_exception(server, err, &exception); | |
1da177e4 LT |
5256 | } while (exception.retry); |
5257 | return err; | |
5258 | } | |
5259 | ||
5260 | static int nfs4_proc_fsinfo(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fsinfo *fsinfo) | |
5261 | { | |
e38eb650 BS |
5262 | int error; |
5263 | ||
0e574af1 | 5264 | nfs_fattr_init(fsinfo->fattr); |
e38eb650 | 5265 | error = nfs4_do_fsinfo(server, fhandle, fsinfo); |
dc182549 PT |
5266 | if (error == 0) { |
5267 | /* block layout checks this! */ | |
5268 | server->pnfs_blksize = fsinfo->blksize; | |
ca440c38 | 5269 | set_pnfs_layoutdriver(server, fhandle, fsinfo); |
dc182549 | 5270 | } |
e38eb650 BS |
5271 | |
5272 | return error; | |
1da177e4 LT |
5273 | } |
5274 | ||
5275 | static int _nfs4_proc_pathconf(struct nfs_server *server, struct nfs_fh *fhandle, | |
5276 | struct nfs_pathconf *pathconf) | |
5277 | { | |
5278 | struct nfs4_pathconf_arg args = { | |
5279 | .fh = fhandle, | |
5280 | .bitmask = server->attr_bitmask, | |
5281 | }; | |
d45b2989 BH |
5282 | struct nfs4_pathconf_res res = { |
5283 | .pathconf = pathconf, | |
5284 | }; | |
1da177e4 LT |
5285 | struct rpc_message msg = { |
5286 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_PATHCONF], | |
5287 | .rpc_argp = &args, | |
d45b2989 | 5288 | .rpc_resp = &res, |
1da177e4 LT |
5289 | }; |
5290 | ||
5291 | /* None of the pathconf attributes are mandatory to implement */ | |
5292 | if ((args.bitmask[0] & nfs4_pathconf_bitmap[0]) == 0) { | |
5293 | memset(pathconf, 0, sizeof(*pathconf)); | |
5294 | return 0; | |
5295 | } | |
5296 | ||
0e574af1 | 5297 | nfs_fattr_init(pathconf->fattr); |
7c513058 | 5298 | return nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
5299 | } |
5300 | ||
5301 | static int nfs4_proc_pathconf(struct nfs_server *server, struct nfs_fh *fhandle, | |
5302 | struct nfs_pathconf *pathconf) | |
5303 | { | |
0688e64b TM |
5304 | struct nfs4_exception exception = { |
5305 | .interruptible = true, | |
5306 | }; | |
1da177e4 LT |
5307 | int err; |
5308 | ||
5309 | do { | |
5310 | err = nfs4_handle_exception(server, | |
5311 | _nfs4_proc_pathconf(server, fhandle, pathconf), | |
5312 | &exception); | |
5313 | } while (exception.retry); | |
5314 | return err; | |
5315 | } | |
5316 | ||
5521abfd | 5317 | int nfs4_set_rw_stateid(nfs4_stateid *stateid, |
9b206149 TM |
5318 | const struct nfs_open_context *ctx, |
5319 | const struct nfs_lock_context *l_ctx, | |
5320 | fmode_t fmode) | |
5321 | { | |
17393475 | 5322 | return nfs4_select_rw_stateid(ctx->state, fmode, l_ctx, stateid, NULL); |
9b206149 TM |
5323 | } |
5324 | EXPORT_SYMBOL_GPL(nfs4_set_rw_stateid); | |
5325 | ||
5521abfd TM |
5326 | static bool nfs4_stateid_is_current(nfs4_stateid *stateid, |
5327 | const struct nfs_open_context *ctx, | |
5328 | const struct nfs_lock_context *l_ctx, | |
5329 | fmode_t fmode) | |
5330 | { | |
d49dd117 | 5331 | nfs4_stateid _current_stateid; |
5521abfd | 5332 | |
e1253be0 | 5333 | /* If the current stateid represents a lost lock, then exit */ |
d49dd117 | 5334 | if (nfs4_set_rw_stateid(&_current_stateid, ctx, l_ctx, fmode) == -EIO) |
e1253be0 | 5335 | return true; |
d49dd117 | 5336 | return nfs4_stateid_match(stateid, &_current_stateid); |
5521abfd TM |
5337 | } |
5338 | ||
5339 | static bool nfs4_error_stateid_expired(int err) | |
5340 | { | |
5341 | switch (err) { | |
5342 | case -NFS4ERR_DELEG_REVOKED: | |
5343 | case -NFS4ERR_ADMIN_REVOKED: | |
5344 | case -NFS4ERR_BAD_STATEID: | |
5345 | case -NFS4ERR_STALE_STATEID: | |
5346 | case -NFS4ERR_OLD_STATEID: | |
5347 | case -NFS4ERR_OPENMODE: | |
5348 | case -NFS4ERR_EXPIRED: | |
5349 | return true; | |
5350 | } | |
5351 | return false; | |
5352 | } | |
5353 | ||
d45f60c6 | 5354 | static int nfs4_read_done_cb(struct rpc_task *task, struct nfs_pgio_header *hdr) |
1da177e4 | 5355 | { |
d45f60c6 | 5356 | struct nfs_server *server = NFS_SERVER(hdr->inode); |
1da177e4 | 5357 | |
d45f60c6 | 5358 | trace_nfs4_read(hdr, task->tk_status); |
9c27869d TM |
5359 | if (task->tk_status < 0) { |
5360 | struct nfs4_exception exception = { | |
5361 | .inode = hdr->inode, | |
5362 | .state = hdr->args.context->state, | |
5363 | .stateid = &hdr->args.stateid, | |
5364 | }; | |
5365 | task->tk_status = nfs4_async_handle_exception(task, | |
5366 | server, task->tk_status, &exception); | |
5367 | if (exception.retry) { | |
5368 | rpc_restart_call_prepare(task); | |
5369 | return -EAGAIN; | |
5370 | } | |
1da177e4 | 5371 | } |
8850df99 | 5372 | |
1da177e4 | 5373 | if (task->tk_status > 0) |
d45f60c6 | 5374 | renew_lease(server, hdr->timestamp); |
ec06c096 | 5375 | return 0; |
1da177e4 LT |
5376 | } |
5377 | ||
5521abfd | 5378 | static bool nfs4_read_stateid_changed(struct rpc_task *task, |
3c6b899c | 5379 | struct nfs_pgio_args *args) |
5521abfd TM |
5380 | { |
5381 | ||
5382 | if (!nfs4_error_stateid_expired(task->tk_status) || | |
5383 | nfs4_stateid_is_current(&args->stateid, | |
5384 | args->context, | |
5385 | args->lock_context, | |
5386 | FMODE_READ)) | |
5387 | return false; | |
5388 | rpc_restart_call_prepare(task); | |
5389 | return true; | |
5390 | } | |
5391 | ||
c5675526 AS |
5392 | static bool nfs4_read_plus_not_supported(struct rpc_task *task, |
5393 | struct nfs_pgio_header *hdr) | |
cbdabc7f | 5394 | { |
c5675526 AS |
5395 | struct nfs_server *server = NFS_SERVER(hdr->inode); |
5396 | struct rpc_message *msg = &task->tk_msg; | |
cbdabc7f | 5397 | |
c5675526 AS |
5398 | if (msg->rpc_proc == &nfs4_procedures[NFSPROC4_CLNT_READ_PLUS] && |
5399 | server->caps & NFS_CAP_READ_PLUS && task->tk_status == -ENOTSUPP) { | |
5400 | server->caps &= ~NFS_CAP_READ_PLUS; | |
5401 | msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_READ]; | |
5402 | rpc_restart_call_prepare(task); | |
5403 | return true; | |
5404 | } | |
5405 | return false; | |
5406 | } | |
5407 | ||
5408 | static int nfs4_read_done(struct rpc_task *task, struct nfs_pgio_header *hdr) | |
5409 | { | |
cbdabc7f AA |
5410 | dprintk("--> %s\n", __func__); |
5411 | ||
d45f60c6 | 5412 | if (!nfs4_sequence_done(task, &hdr->res.seq_res)) |
cbdabc7f | 5413 | return -EAGAIN; |
d45f60c6 | 5414 | if (nfs4_read_stateid_changed(task, &hdr->args)) |
5521abfd | 5415 | return -EAGAIN; |
c5675526 AS |
5416 | if (nfs4_read_plus_not_supported(task, hdr)) |
5417 | return -EAGAIN; | |
bfc505de TM |
5418 | if (task->tk_status > 0) |
5419 | nfs_invalidate_atime(hdr->inode); | |
d45f60c6 WAA |
5420 | return hdr->pgio_done_cb ? hdr->pgio_done_cb(task, hdr) : |
5421 | nfs4_read_done_cb(task, hdr); | |
cbdabc7f AA |
5422 | } |
5423 | ||
21e31401 | 5424 | #if defined CONFIG_NFS_V4_2 && defined CONFIG_NFS_V4_2_READ_PLUS |
5c3485bb TM |
5425 | static void nfs42_read_plus_support(struct nfs_pgio_header *hdr, |
5426 | struct rpc_message *msg) | |
c5675526 | 5427 | { |
5c3485bb TM |
5428 | /* Note: We don't use READ_PLUS with pNFS yet */ |
5429 | if (nfs_server_capable(hdr->inode, NFS_CAP_READ_PLUS) && !hdr->ds_clp) | |
c5675526 | 5430 | msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_READ_PLUS]; |
c5675526 AS |
5431 | } |
5432 | #else | |
5c3485bb TM |
5433 | static void nfs42_read_plus_support(struct nfs_pgio_header *hdr, |
5434 | struct rpc_message *msg) | |
c5675526 | 5435 | { |
c5675526 AS |
5436 | } |
5437 | #endif /* CONFIG_NFS_V4_2 */ | |
5438 | ||
d45f60c6 WAA |
5439 | static void nfs4_proc_read_setup(struct nfs_pgio_header *hdr, |
5440 | struct rpc_message *msg) | |
1da177e4 | 5441 | { |
d45f60c6 | 5442 | hdr->timestamp = jiffies; |
ca857cc1 TM |
5443 | if (!hdr->pgio_done_cb) |
5444 | hdr->pgio_done_cb = nfs4_read_done_cb; | |
5c3485bb TM |
5445 | msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_READ]; |
5446 | nfs42_read_plus_support(hdr, msg); | |
fba83f34 | 5447 | nfs4_init_sequence(&hdr->args.seq_args, &hdr->res.seq_res, 0, 0); |
1da177e4 LT |
5448 | } |
5449 | ||
d45f60c6 WAA |
5450 | static int nfs4_proc_pgio_rpc_prepare(struct rpc_task *task, |
5451 | struct nfs_pgio_header *hdr) | |
ea7c3303 | 5452 | { |
42e1cca7 | 5453 | if (nfs4_setup_sequence(NFS_SERVER(hdr->inode)->nfs_client, |
d45f60c6 WAA |
5454 | &hdr->args.seq_args, |
5455 | &hdr->res.seq_res, | |
9b206149 | 5456 | task)) |
ef1820f9 | 5457 | return 0; |
d45f60c6 WAA |
5458 | if (nfs4_set_rw_stateid(&hdr->args.stateid, hdr->args.context, |
5459 | hdr->args.lock_context, | |
fbe77c30 | 5460 | hdr->rw_mode) == -EIO) |
ef1820f9 | 5461 | return -EIO; |
d45f60c6 | 5462 | if (unlikely(test_bit(NFS_CONTEXT_BAD, &hdr->args.context->flags))) |
ef1820f9 N |
5463 | return -EIO; |
5464 | return 0; | |
1da177e4 LT |
5465 | } |
5466 | ||
d45f60c6 WAA |
5467 | static int nfs4_write_done_cb(struct rpc_task *task, |
5468 | struct nfs_pgio_header *hdr) | |
1da177e4 | 5469 | { |
d45f60c6 | 5470 | struct inode *inode = hdr->inode; |
8478eaa1 | 5471 | |
d45f60c6 | 5472 | trace_nfs4_write(hdr, task->tk_status); |
9c27869d TM |
5473 | if (task->tk_status < 0) { |
5474 | struct nfs4_exception exception = { | |
5475 | .inode = hdr->inode, | |
5476 | .state = hdr->args.context->state, | |
5477 | .stateid = &hdr->args.stateid, | |
5478 | }; | |
5479 | task->tk_status = nfs4_async_handle_exception(task, | |
5480 | NFS_SERVER(inode), task->tk_status, | |
5481 | &exception); | |
5482 | if (exception.retry) { | |
5483 | rpc_restart_call_prepare(task); | |
5484 | return -EAGAIN; | |
5485 | } | |
1da177e4 | 5486 | } |
4f9838c7 | 5487 | if (task->tk_status >= 0) { |
d45f60c6 | 5488 | renew_lease(NFS_SERVER(inode), hdr->timestamp); |
a08a8cd3 | 5489 | nfs_writeback_update_inode(hdr); |
4f9838c7 | 5490 | } |
788e7a89 | 5491 | return 0; |
1da177e4 LT |
5492 | } |
5493 | ||
5521abfd | 5494 | static bool nfs4_write_stateid_changed(struct rpc_task *task, |
3c6b899c | 5495 | struct nfs_pgio_args *args) |
5521abfd TM |
5496 | { |
5497 | ||
5498 | if (!nfs4_error_stateid_expired(task->tk_status) || | |
5499 | nfs4_stateid_is_current(&args->stateid, | |
5500 | args->context, | |
5501 | args->lock_context, | |
5502 | FMODE_WRITE)) | |
5503 | return false; | |
5504 | rpc_restart_call_prepare(task); | |
5505 | return true; | |
5506 | } | |
5507 | ||
d45f60c6 | 5508 | static int nfs4_write_done(struct rpc_task *task, struct nfs_pgio_header *hdr) |
b029bc9b | 5509 | { |
d45f60c6 | 5510 | if (!nfs4_sequence_done(task, &hdr->res.seq_res)) |
b029bc9b | 5511 | return -EAGAIN; |
d45f60c6 | 5512 | if (nfs4_write_stateid_changed(task, &hdr->args)) |
5521abfd | 5513 | return -EAGAIN; |
d45f60c6 WAA |
5514 | return hdr->pgio_done_cb ? hdr->pgio_done_cb(task, hdr) : |
5515 | nfs4_write_done_cb(task, hdr); | |
b029bc9b FI |
5516 | } |
5517 | ||
5a37f851 | 5518 | static |
d45f60c6 | 5519 | bool nfs4_write_need_cache_consistency_data(struct nfs_pgio_header *hdr) |
a69aef14 | 5520 | { |
5a37f851 | 5521 | /* Don't request attributes for pNFS or O_DIRECT writes */ |
d45f60c6 | 5522 | if (hdr->ds_clp != NULL || hdr->dreq != NULL) |
5a37f851 TM |
5523 | return false; |
5524 | /* Otherwise, request attributes if and only if we don't hold | |
5525 | * a delegation | |
5526 | */ | |
011e2a7f | 5527 | return nfs4_have_delegation(hdr->inode, FMODE_READ) == 0; |
a69aef14 | 5528 | } |
a69aef14 | 5529 | |
332d1a03 TM |
5530 | static void nfs4_bitmask_set(__u32 bitmask[NFS4_BITMASK_SZ], const __u32 *src, |
5531 | struct inode *inode, struct nfs_server *server, | |
5532 | struct nfs4_label *label) | |
76bd5c01 | 5533 | { |
76bd5c01 | 5534 | unsigned long cache_validity = READ_ONCE(NFS_I(inode)->cache_validity); |
332d1a03 | 5535 | unsigned int i; |
76bd5c01 | 5536 | |
332d1a03 | 5537 | memcpy(bitmask, src, sizeof(*bitmask) * NFS4_BITMASK_SZ); |
76bd5c01 | 5538 | |
13c0b082 | 5539 | if (cache_validity & NFS_INO_INVALID_CHANGE) |
332d1a03 | 5540 | bitmask[0] |= FATTR4_WORD0_CHANGE; |
76bd5c01 OK |
5541 | if (cache_validity & NFS_INO_INVALID_ATIME) |
5542 | bitmask[1] |= FATTR4_WORD1_TIME_ACCESS; | |
720869eb TM |
5543 | if (cache_validity & NFS_INO_INVALID_MODE) |
5544 | bitmask[1] |= FATTR4_WORD1_MODE; | |
45901a23 | 5545 | if (cache_validity & NFS_INO_INVALID_OTHER) |
720869eb | 5546 | bitmask[1] |= FATTR4_WORD1_OWNER | FATTR4_WORD1_OWNER_GROUP; |
fabf2b34 TM |
5547 | if (cache_validity & NFS_INO_INVALID_NLINK) |
5548 | bitmask[1] |= FATTR4_WORD1_NUMLINKS; | |
45901a23 | 5549 | if (label && label->len && cache_validity & NFS_INO_INVALID_LABEL) |
76bd5c01 | 5550 | bitmask[2] |= FATTR4_WORD2_SECURITY_LABEL; |
45901a23 TM |
5551 | if (cache_validity & NFS_INO_INVALID_CTIME) |
5552 | bitmask[1] |= FATTR4_WORD1_TIME_METADATA; | |
76bd5c01 OK |
5553 | if (cache_validity & NFS_INO_INVALID_MTIME) |
5554 | bitmask[1] |= FATTR4_WORD1_TIME_MODIFY; | |
76bd5c01 OK |
5555 | if (cache_validity & NFS_INO_INVALID_BLOCKS) |
5556 | bitmask[1] |= FATTR4_WORD1_SPACE_USED; | |
332d1a03 | 5557 | |
cc7f2dae | 5558 | if (cache_validity & NFS_INO_INVALID_SIZE) |
332d1a03 TM |
5559 | bitmask[0] |= FATTR4_WORD0_SIZE; |
5560 | ||
5561 | for (i = 0; i < NFS4_BITMASK_SZ; i++) | |
5562 | bitmask[i] &= server->attr_bitmask[i]; | |
76bd5c01 OK |
5563 | } |
5564 | ||
d45f60c6 | 5565 | static void nfs4_proc_write_setup(struct nfs_pgio_header *hdr, |
fb91fb0e AS |
5566 | struct rpc_message *msg, |
5567 | struct rpc_clnt **clnt) | |
1da177e4 | 5568 | { |
d45f60c6 | 5569 | struct nfs_server *server = NFS_SERVER(hdr->inode); |
bdc7f021 | 5570 | |
d45f60c6 WAA |
5571 | if (!nfs4_write_need_cache_consistency_data(hdr)) { |
5572 | hdr->args.bitmask = NULL; | |
5573 | hdr->res.fattr = NULL; | |
76bd5c01 | 5574 | } else { |
332d1a03 TM |
5575 | nfs4_bitmask_set(hdr->args.bitmask_store, |
5576 | server->cache_consistency_bitmask, | |
5577 | hdr->inode, server, NULL); | |
5578 | hdr->args.bitmask = hdr->args.bitmask_store; | |
76bd5c01 | 5579 | } |
5a37f851 | 5580 | |
d45f60c6 WAA |
5581 | if (!hdr->pgio_done_cb) |
5582 | hdr->pgio_done_cb = nfs4_write_done_cb; | |
5583 | hdr->res.server = server; | |
5584 | hdr->timestamp = jiffies; | |
1da177e4 | 5585 | |
bdc7f021 | 5586 | msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_WRITE]; |
cd1b659d | 5587 | nfs4_init_sequence(&hdr->args.seq_args, &hdr->res.seq_res, 0, 0); |
fb91fb0e | 5588 | nfs4_state_protect_write(server->nfs_client, clnt, msg, hdr); |
1da177e4 LT |
5589 | } |
5590 | ||
0b7c0153 | 5591 | static void nfs4_proc_commit_rpc_prepare(struct rpc_task *task, struct nfs_commit_data *data) |
c6cb80d0 | 5592 | { |
42e1cca7 | 5593 | nfs4_setup_sequence(NFS_SERVER(data->inode)->nfs_client, |
d9afbd1b TM |
5594 | &data->args.seq_args, |
5595 | &data->res.seq_res, | |
5596 | task); | |
1da177e4 LT |
5597 | } |
5598 | ||
0b7c0153 | 5599 | static int nfs4_commit_done_cb(struct rpc_task *task, struct nfs_commit_data *data) |
1da177e4 | 5600 | { |
1da177e4 | 5601 | struct inode *inode = data->inode; |
14516c3a | 5602 | |
cc668ab3 | 5603 | trace_nfs4_commit(data, task->tk_status); |
8478eaa1 N |
5604 | if (nfs4_async_handle_error(task, NFS_SERVER(inode), |
5605 | NULL, NULL) == -EAGAIN) { | |
d00c5d43 | 5606 | rpc_restart_call_prepare(task); |
788e7a89 | 5607 | return -EAGAIN; |
1da177e4 | 5608 | } |
788e7a89 | 5609 | return 0; |
1da177e4 LT |
5610 | } |
5611 | ||
0b7c0153 | 5612 | static int nfs4_commit_done(struct rpc_task *task, struct nfs_commit_data *data) |
5f452431 FI |
5613 | { |
5614 | if (!nfs4_sequence_done(task, &data->res.seq_res)) | |
5615 | return -EAGAIN; | |
0b7c0153 | 5616 | return data->commit_done_cb(task, data); |
5f452431 FI |
5617 | } |
5618 | ||
e9ae1ee2 AS |
5619 | static void nfs4_proc_commit_setup(struct nfs_commit_data *data, struct rpc_message *msg, |
5620 | struct rpc_clnt **clnt) | |
1da177e4 | 5621 | { |
788e7a89 | 5622 | struct nfs_server *server = NFS_SERVER(data->inode); |
988b6dce | 5623 | |
0b7c0153 FI |
5624 | if (data->commit_done_cb == NULL) |
5625 | data->commit_done_cb = nfs4_commit_done_cb; | |
4f9838c7 | 5626 | data->res.server = server; |
bdc7f021 | 5627 | msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_COMMIT]; |
fba83f34 | 5628 | nfs4_init_sequence(&data->args.seq_args, &data->res.seq_res, 1, 0); |
e9ae1ee2 | 5629 | nfs4_state_protect(server->nfs_client, NFS_SP4_MACH_CRED_COMMIT, clnt, msg); |
1da177e4 LT |
5630 | } |
5631 | ||
6b8d84e2 OK |
5632 | static int _nfs4_proc_commit(struct file *dst, struct nfs_commitargs *args, |
5633 | struct nfs_commitres *res) | |
5634 | { | |
5635 | struct inode *dst_inode = file_inode(dst); | |
5636 | struct nfs_server *server = NFS_SERVER(dst_inode); | |
5637 | struct rpc_message msg = { | |
5638 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_COMMIT], | |
5639 | .rpc_argp = args, | |
5640 | .rpc_resp = res, | |
5641 | }; | |
5642 | ||
5643 | args->fh = NFS_FH(dst_inode); | |
5644 | return nfs4_call_sync(server->client, server, &msg, | |
5645 | &args->seq_args, &res->seq_res, 1); | |
5646 | } | |
5647 | ||
5648 | int nfs4_proc_commit(struct file *dst, __u64 offset, __u32 count, struct nfs_commitres *res) | |
5649 | { | |
5650 | struct nfs_commitargs args = { | |
5651 | .offset = offset, | |
5652 | .count = count, | |
5653 | }; | |
5654 | struct nfs_server *dst_server = NFS_SERVER(file_inode(dst)); | |
5655 | struct nfs4_exception exception = { }; | |
5656 | int status; | |
5657 | ||
5658 | do { | |
5659 | status = _nfs4_proc_commit(dst, &args, res); | |
5660 | status = nfs4_handle_exception(dst_server, status, &exception); | |
5661 | } while (exception.retry); | |
5662 | ||
5663 | return status; | |
5664 | } | |
5665 | ||
9bc4e3ca CL |
5666 | struct nfs4_renewdata { |
5667 | struct nfs_client *client; | |
5668 | unsigned long timestamp; | |
5669 | }; | |
5670 | ||
1da177e4 LT |
5671 | /* |
5672 | * nfs4_proc_async_renew(): This is not one of the nfs_rpc_ops; it is a special | |
5673 | * standalone procedure for queueing an asynchronous RENEW. | |
5674 | */ | |
9bc4e3ca | 5675 | static void nfs4_renew_release(void *calldata) |
dc96aef9 | 5676 | { |
9bc4e3ca CL |
5677 | struct nfs4_renewdata *data = calldata; |
5678 | struct nfs_client *clp = data->client; | |
dc96aef9 | 5679 | |
212bf41d | 5680 | if (refcount_read(&clp->cl_count) > 1) |
0851de06 AB |
5681 | nfs4_schedule_state_renewal(clp); |
5682 | nfs_put_client(clp); | |
9bc4e3ca | 5683 | kfree(data); |
dc96aef9 AB |
5684 | } |
5685 | ||
9bc4e3ca | 5686 | static void nfs4_renew_done(struct rpc_task *task, void *calldata) |
1da177e4 | 5687 | { |
9bc4e3ca CL |
5688 | struct nfs4_renewdata *data = calldata; |
5689 | struct nfs_client *clp = data->client; | |
5690 | unsigned long timestamp = data->timestamp; | |
1da177e4 | 5691 | |
c6d01c6f | 5692 | trace_nfs4_renew_async(clp, task->tk_status); |
f8aba1e8 CL |
5693 | switch (task->tk_status) { |
5694 | case 0: | |
5695 | break; | |
5696 | case -NFS4ERR_LEASE_MOVED: | |
5697 | nfs4_schedule_lease_moved_recovery(clp); | |
5698 | break; | |
5699 | default: | |
95baa25c | 5700 | /* Unless we're shutting down, schedule state recovery! */ |
042b60be TM |
5701 | if (test_bit(NFS_CS_RENEWD, &clp->cl_res_state) == 0) |
5702 | return; | |
5703 | if (task->tk_status != NFS4ERR_CB_PATH_DOWN) { | |
0400a6b0 | 5704 | nfs4_schedule_lease_recovery(clp); |
042b60be TM |
5705 | return; |
5706 | } | |
5707 | nfs4_schedule_path_down_recovery(clp); | |
1da177e4 | 5708 | } |
452e9352 | 5709 | do_renew_lease(clp, timestamp); |
1da177e4 LT |
5710 | } |
5711 | ||
963d8fe5 TM |
5712 | static const struct rpc_call_ops nfs4_renew_ops = { |
5713 | .rpc_call_done = nfs4_renew_done, | |
dc96aef9 | 5714 | .rpc_release = nfs4_renew_release, |
963d8fe5 TM |
5715 | }; |
5716 | ||
a52458b4 | 5717 | static int nfs4_proc_async_renew(struct nfs_client *clp, const struct cred *cred, unsigned renew_flags) |
1da177e4 LT |
5718 | { |
5719 | struct rpc_message msg = { | |
5720 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RENEW], | |
5721 | .rpc_argp = clp, | |
b4454fe1 | 5722 | .rpc_cred = cred, |
1da177e4 | 5723 | }; |
9bc4e3ca | 5724 | struct nfs4_renewdata *data; |
1da177e4 | 5725 | |
2f60ea6b TM |
5726 | if (renew_flags == 0) |
5727 | return 0; | |
212bf41d | 5728 | if (!refcount_inc_not_zero(&clp->cl_count)) |
0851de06 | 5729 | return -EIO; |
b569ad34 | 5730 | data = kmalloc(sizeof(*data), GFP_NOFS); |
5c737cb2 DW |
5731 | if (data == NULL) { |
5732 | nfs_put_client(clp); | |
9bc4e3ca | 5733 | return -ENOMEM; |
5c737cb2 | 5734 | } |
9bc4e3ca CL |
5735 | data->client = clp; |
5736 | data->timestamp = jiffies; | |
bc7a05ca | 5737 | return rpc_call_async(clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT, |
9bc4e3ca | 5738 | &nfs4_renew_ops, data); |
1da177e4 LT |
5739 | } |
5740 | ||
a52458b4 | 5741 | static int nfs4_proc_renew(struct nfs_client *clp, const struct cred *cred) |
1da177e4 LT |
5742 | { |
5743 | struct rpc_message msg = { | |
5744 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RENEW], | |
5745 | .rpc_argp = clp, | |
b4454fe1 | 5746 | .rpc_cred = cred, |
1da177e4 LT |
5747 | }; |
5748 | unsigned long now = jiffies; | |
5749 | int status; | |
5750 | ||
bc7a05ca | 5751 | status = rpc_call_sync(clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT); |
1da177e4 LT |
5752 | if (status < 0) |
5753 | return status; | |
452e9352 | 5754 | do_renew_lease(clp, now); |
1da177e4 LT |
5755 | return 0; |
5756 | } | |
5757 | ||
aa1870af BF |
5758 | static inline int nfs4_server_supports_acls(struct nfs_server *server) |
5759 | { | |
7dd7d959 | 5760 | return server->caps & NFS_CAP_ACLS; |
aa1870af BF |
5761 | } |
5762 | ||
21f498c2 TM |
5763 | /* Assuming that XATTR_SIZE_MAX is a multiple of PAGE_SIZE, and that |
5764 | * it's OK to put sizeof(void) * (XATTR_SIZE_MAX/PAGE_SIZE) bytes on | |
aa1870af BF |
5765 | * the stack. |
5766 | */ | |
21f498c2 | 5767 | #define NFS4ACL_MAXPAGES DIV_ROUND_UP(XATTR_SIZE_MAX, PAGE_SIZE) |
aa1870af | 5768 | |
ccde1e9c | 5769 | int nfs4_buf_to_pages_noslab(const void *buf, size_t buflen, |
8fbcf237 | 5770 | struct page **pages) |
e9e3d724 NH |
5771 | { |
5772 | struct page *newpage, **spages; | |
5773 | int rc = 0; | |
5774 | size_t len; | |
5775 | spages = pages; | |
5776 | ||
5777 | do { | |
21f498c2 | 5778 | len = min_t(size_t, PAGE_SIZE, buflen); |
e9e3d724 NH |
5779 | newpage = alloc_page(GFP_KERNEL); |
5780 | ||
5781 | if (newpage == NULL) | |
5782 | goto unwind; | |
5783 | memcpy(page_address(newpage), buf, len); | |
d9b67e1e AS |
5784 | buf += len; |
5785 | buflen -= len; | |
e9e3d724 NH |
5786 | *pages++ = newpage; |
5787 | rc++; | |
5788 | } while (buflen != 0); | |
5789 | ||
5790 | return rc; | |
5791 | ||
5792 | unwind: | |
5793 | for(; rc > 0; rc--) | |
5794 | __free_page(spages[rc-1]); | |
5795 | return -ENOMEM; | |
5796 | } | |
5797 | ||
e50a1c2e BF |
5798 | struct nfs4_cached_acl { |
5799 | int cached; | |
5800 | size_t len; | |
5601cda8 | 5801 | char data[]; |
e50a1c2e BF |
5802 | }; |
5803 | ||
5804 | static void nfs4_set_cached_acl(struct inode *inode, struct nfs4_cached_acl *acl) | |
5805 | { | |
5806 | struct nfs_inode *nfsi = NFS_I(inode); | |
5807 | ||
5808 | spin_lock(&inode->i_lock); | |
5809 | kfree(nfsi->nfs4_acl); | |
5810 | nfsi->nfs4_acl = acl; | |
5811 | spin_unlock(&inode->i_lock); | |
5812 | } | |
5813 | ||
5814 | static void nfs4_zap_acl_attr(struct inode *inode) | |
5815 | { | |
5816 | nfs4_set_cached_acl(inode, NULL); | |
5817 | } | |
5818 | ||
5819 | static inline ssize_t nfs4_read_cached_acl(struct inode *inode, char *buf, size_t buflen) | |
5820 | { | |
5821 | struct nfs_inode *nfsi = NFS_I(inode); | |
5822 | struct nfs4_cached_acl *acl; | |
5823 | int ret = -ENOENT; | |
5824 | ||
5825 | spin_lock(&inode->i_lock); | |
5826 | acl = nfsi->nfs4_acl; | |
5827 | if (acl == NULL) | |
5828 | goto out; | |
5829 | if (buf == NULL) /* user is just asking for length */ | |
5830 | goto out_len; | |
5831 | if (acl->cached == 0) | |
5832 | goto out; | |
5833 | ret = -ERANGE; /* see getxattr(2) man page */ | |
5834 | if (acl->len > buflen) | |
5835 | goto out; | |
5836 | memcpy(buf, acl->data, acl->len); | |
5837 | out_len: | |
5838 | ret = acl->len; | |
5839 | out: | |
5840 | spin_unlock(&inode->i_lock); | |
5841 | return ret; | |
5842 | } | |
5843 | ||
5794d21e | 5844 | static void nfs4_write_cached_acl(struct inode *inode, struct page **pages, size_t pgbase, size_t acl_len) |
e50a1c2e BF |
5845 | { |
5846 | struct nfs4_cached_acl *acl; | |
b291f1b1 | 5847 | size_t buflen = sizeof(*acl) + acl_len; |
e50a1c2e | 5848 | |
1f1ea6c2 | 5849 | if (buflen <= PAGE_SIZE) { |
b291f1b1 | 5850 | acl = kmalloc(buflen, GFP_KERNEL); |
e50a1c2e BF |
5851 | if (acl == NULL) |
5852 | goto out; | |
5853 | acl->cached = 1; | |
5794d21e | 5854 | _copy_from_pages(acl->data, pages, pgbase, acl_len); |
e50a1c2e BF |
5855 | } else { |
5856 | acl = kmalloc(sizeof(*acl), GFP_KERNEL); | |
5857 | if (acl == NULL) | |
5858 | goto out; | |
5859 | acl->cached = 0; | |
5860 | } | |
5861 | acl->len = acl_len; | |
5862 | out: | |
5863 | nfs4_set_cached_acl(inode, acl); | |
5864 | } | |
5865 | ||
bf118a34 AA |
5866 | /* |
5867 | * The getxattr API returns the required buffer length when called with a | |
5868 | * NULL buf. The NFSv4 acl tool then calls getxattr again after allocating | |
5869 | * the required buf. On a NULL buf, we send a page of data to the server | |
5870 | * guessing that the ACL request can be serviced by a page. If so, we cache | |
5871 | * up to the page of ACL data, and the 2nd call to getxattr is serviced by | |
5872 | * the cache. If not so, we throw away the page, and cache the required | |
5873 | * length. The next getxattr call will then produce another round trip to | |
5874 | * the server, this time with the input buf of the required size. | |
5875 | */ | |
16b4289c | 5876 | static ssize_t __nfs4_get_acl_uncached(struct inode *inode, void *buf, size_t buflen) |
aa1870af | 5877 | { |
62a1573f | 5878 | struct page **pages; |
aa1870af BF |
5879 | struct nfs_getaclargs args = { |
5880 | .fh = NFS_FH(inode), | |
aa1870af BF |
5881 | .acl_len = buflen, |
5882 | }; | |
663c79b3 BH |
5883 | struct nfs_getaclres res = { |
5884 | .acl_len = buflen, | |
5885 | }; | |
aa1870af BF |
5886 | struct rpc_message msg = { |
5887 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GETACL], | |
5888 | .rpc_argp = &args, | |
663c79b3 | 5889 | .rpc_resp = &res, |
aa1870af | 5890 | }; |
62a1573f | 5891 | unsigned int npages; |
21f498c2 | 5892 | int ret = -ENOMEM, i; |
62a1573f OK |
5893 | struct nfs_server *server = NFS_SERVER(inode); |
5894 | ||
5895 | if (buflen == 0) | |
5896 | buflen = server->rsize; | |
5897 | ||
5898 | npages = DIV_ROUND_UP(buflen, PAGE_SIZE) + 1; | |
5899 | pages = kmalloc_array(npages, sizeof(struct page *), GFP_NOFS); | |
5900 | if (!pages) | |
5901 | return -ENOMEM; | |
aa1870af | 5902 | |
62a1573f | 5903 | args.acl_pages = pages; |
5a006899 | 5904 | |
bf118a34 AA |
5905 | for (i = 0; i < npages; i++) { |
5906 | pages[i] = alloc_page(GFP_KERNEL); | |
5907 | if (!pages[i]) | |
5908 | goto out_free; | |
e50a1c2e | 5909 | } |
5a006899 SP |
5910 | |
5911 | /* for decoding across pages */ | |
5912 | res.acl_scratch = alloc_page(GFP_KERNEL); | |
5913 | if (!res.acl_scratch) | |
5914 | goto out_free; | |
5915 | ||
bf118a34 | 5916 | args.acl_len = npages * PAGE_SIZE; |
5a006899 | 5917 | |
de040bec | 5918 | dprintk("%s buf %p buflen %zu npages %d args.acl_len %zu\n", |
bf118a34 AA |
5919 | __func__, buf, buflen, npages, args.acl_len); |
5920 | ret = nfs4_call_sync(NFS_SERVER(inode)->client, NFS_SERVER(inode), | |
5921 | &msg, &args.seq_args, &res.seq_res, 0); | |
e50a1c2e BF |
5922 | if (ret) |
5923 | goto out_free; | |
bf118a34 | 5924 | |
1f1ea6c2 TM |
5925 | /* Handle the case where the passed-in buffer is too short */ |
5926 | if (res.acl_flags & NFS4_ACL_TRUNC) { | |
5927 | /* Did the user only issue a request for the acl length? */ | |
5928 | if (buf == NULL) | |
5929 | goto out_ok; | |
e50a1c2e | 5930 | ret = -ERANGE; |
1f1ea6c2 | 5931 | goto out_free; |
e50a1c2e | 5932 | } |
1f1ea6c2 | 5933 | nfs4_write_cached_acl(inode, pages, res.acl_data_offset, res.acl_len); |
7d3e91a8 SW |
5934 | if (buf) { |
5935 | if (res.acl_len > buflen) { | |
5936 | ret = -ERANGE; | |
5937 | goto out_free; | |
5938 | } | |
1f1ea6c2 | 5939 | _copy_from_pages(buf, pages, res.acl_data_offset, res.acl_len); |
7d3e91a8 | 5940 | } |
1f1ea6c2 TM |
5941 | out_ok: |
5942 | ret = res.acl_len; | |
e50a1c2e | 5943 | out_free: |
bf118a34 AA |
5944 | for (i = 0; i < npages; i++) |
5945 | if (pages[i]) | |
5946 | __free_page(pages[i]); | |
331818f1 TM |
5947 | if (res.acl_scratch) |
5948 | __free_page(res.acl_scratch); | |
62a1573f | 5949 | kfree(pages); |
aa1870af BF |
5950 | return ret; |
5951 | } | |
5952 | ||
16b4289c TM |
5953 | static ssize_t nfs4_get_acl_uncached(struct inode *inode, void *buf, size_t buflen) |
5954 | { | |
0688e64b TM |
5955 | struct nfs4_exception exception = { |
5956 | .interruptible = true, | |
5957 | }; | |
16b4289c TM |
5958 | ssize_t ret; |
5959 | do { | |
5960 | ret = __nfs4_get_acl_uncached(inode, buf, buflen); | |
c1578b76 | 5961 | trace_nfs4_get_acl(inode, ret); |
16b4289c TM |
5962 | if (ret >= 0) |
5963 | break; | |
5964 | ret = nfs4_handle_exception(NFS_SERVER(inode), ret, &exception); | |
5965 | } while (exception.retry); | |
5966 | return ret; | |
5967 | } | |
5968 | ||
e50a1c2e BF |
5969 | static ssize_t nfs4_proc_get_acl(struct inode *inode, void *buf, size_t buflen) |
5970 | { | |
5971 | struct nfs_server *server = NFS_SERVER(inode); | |
5972 | int ret; | |
5973 | ||
5974 | if (!nfs4_server_supports_acls(server)) | |
5975 | return -EOPNOTSUPP; | |
1f3208b2 | 5976 | ret = nfs_revalidate_inode(inode, NFS_INO_INVALID_CHANGE); |
e50a1c2e BF |
5977 | if (ret < 0) |
5978 | return ret; | |
08a22b39 AK |
5979 | if (NFS_I(inode)->cache_validity & NFS_INO_INVALID_ACL) |
5980 | nfs_zap_acl_cache(inode); | |
e50a1c2e BF |
5981 | ret = nfs4_read_cached_acl(inode, buf, buflen); |
5982 | if (ret != -ENOENT) | |
bf118a34 AA |
5983 | /* -ENOENT is returned if there is no ACL or if there is an ACL |
5984 | * but no cached acl data, just the acl length */ | |
e50a1c2e BF |
5985 | return ret; |
5986 | return nfs4_get_acl_uncached(inode, buf, buflen); | |
5987 | } | |
5988 | ||
16b4289c | 5989 | static int __nfs4_proc_set_acl(struct inode *inode, const void *buf, size_t buflen) |
4b580ee3 BF |
5990 | { |
5991 | struct nfs_server *server = NFS_SERVER(inode); | |
5992 | struct page *pages[NFS4ACL_MAXPAGES]; | |
5993 | struct nfs_setaclargs arg = { | |
5994 | .fh = NFS_FH(inode), | |
5995 | .acl_pages = pages, | |
5996 | .acl_len = buflen, | |
5997 | }; | |
73c403a9 | 5998 | struct nfs_setaclres res; |
4b580ee3 BF |
5999 | struct rpc_message msg = { |
6000 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SETACL], | |
6001 | .rpc_argp = &arg, | |
73c403a9 | 6002 | .rpc_resp = &res, |
4b580ee3 | 6003 | }; |
21f498c2 | 6004 | unsigned int npages = DIV_ROUND_UP(buflen, PAGE_SIZE); |
e9e3d724 | 6005 | int ret, i; |
4b580ee3 | 6006 | |
4f8be1f5 BF |
6007 | /* You can't remove system.nfs4_acl: */ |
6008 | if (buflen == 0) | |
6009 | return -EINVAL; | |
4b580ee3 BF |
6010 | if (!nfs4_server_supports_acls(server)) |
6011 | return -EOPNOTSUPP; | |
21f498c2 TM |
6012 | if (npages > ARRAY_SIZE(pages)) |
6013 | return -ERANGE; | |
ccde1e9c | 6014 | i = nfs4_buf_to_pages_noslab(buf, buflen, arg.acl_pages); |
e9e3d724 NH |
6015 | if (i < 0) |
6016 | return i; | |
c01d3645 | 6017 | nfs4_inode_make_writeable(inode); |
7c513058 | 6018 | ret = nfs4_call_sync(server->client, server, &msg, &arg.seq_args, &res.seq_res, 1); |
e9e3d724 NH |
6019 | |
6020 | /* | |
6021 | * Free each page after tx, so the only ref left is | |
6022 | * held by the network stack | |
6023 | */ | |
6024 | for (; i > 0; i--) | |
6025 | put_page(pages[i-1]); | |
6026 | ||
08a22b39 AK |
6027 | /* |
6028 | * Acl update can result in inode attribute update. | |
6029 | * so mark the attribute cache invalid. | |
6030 | */ | |
6031 | spin_lock(&inode->i_lock); | |
b6f80a2e TM |
6032 | nfs_set_cache_invalid(inode, NFS_INO_INVALID_CHANGE | |
6033 | NFS_INO_INVALID_CTIME | | |
6034 | NFS_INO_REVAL_FORCED); | |
08a22b39 | 6035 | spin_unlock(&inode->i_lock); |
f41f7418 TM |
6036 | nfs_access_zap_cache(inode); |
6037 | nfs_zap_acl_cache(inode); | |
4b580ee3 BF |
6038 | return ret; |
6039 | } | |
6040 | ||
16b4289c TM |
6041 | static int nfs4_proc_set_acl(struct inode *inode, const void *buf, size_t buflen) |
6042 | { | |
6043 | struct nfs4_exception exception = { }; | |
6044 | int err; | |
6045 | do { | |
c1578b76 TM |
6046 | err = __nfs4_proc_set_acl(inode, buf, buflen); |
6047 | trace_nfs4_set_acl(inode, err); | |
f8849e20 DN |
6048 | if (err == -NFS4ERR_BADOWNER || err == -NFS4ERR_BADNAME) { |
6049 | /* | |
6050 | * no need to retry since the kernel | |
6051 | * isn't involved in encoding the ACEs. | |
6052 | */ | |
6053 | err = -EINVAL; | |
6054 | break; | |
6055 | } | |
c1578b76 | 6056 | err = nfs4_handle_exception(NFS_SERVER(inode), err, |
16b4289c TM |
6057 | &exception); |
6058 | } while (exception.retry); | |
6059 | return err; | |
6060 | } | |
6061 | ||
aa9c2669 DQ |
6062 | #ifdef CONFIG_NFS_V4_SECURITY_LABEL |
6063 | static int _nfs4_get_security_label(struct inode *inode, void *buf, | |
6064 | size_t buflen) | |
6065 | { | |
6066 | struct nfs_server *server = NFS_SERVER(inode); | |
6067 | struct nfs_fattr fattr; | |
6068 | struct nfs4_label label = {0, 0, buflen, buf}; | |
6069 | ||
6070 | u32 bitmask[3] = { 0, 0, FATTR4_WORD2_SECURITY_LABEL }; | |
fcb63a9b | 6071 | struct nfs4_getattr_arg arg = { |
aa9c2669 DQ |
6072 | .fh = NFS_FH(inode), |
6073 | .bitmask = bitmask, | |
6074 | }; | |
6075 | struct nfs4_getattr_res res = { | |
6076 | .fattr = &fattr, | |
6077 | .label = &label, | |
6078 | .server = server, | |
6079 | }; | |
6080 | struct rpc_message msg = { | |
6081 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GETATTR], | |
fcb63a9b | 6082 | .rpc_argp = &arg, |
aa9c2669 DQ |
6083 | .rpc_resp = &res, |
6084 | }; | |
6085 | int ret; | |
6086 | ||
6087 | nfs_fattr_init(&fattr); | |
6088 | ||
fcb63a9b | 6089 | ret = nfs4_call_sync(server->client, server, &msg, &arg.seq_args, &res.seq_res, 0); |
aa9c2669 DQ |
6090 | if (ret) |
6091 | return ret; | |
6092 | if (!(fattr.valid & NFS_ATTR_FATTR_V4_SECURITY_LABEL)) | |
6093 | return -ENOENT; | |
53cb2454 | 6094 | return label.len; |
aa9c2669 DQ |
6095 | } |
6096 | ||
6097 | static int nfs4_get_security_label(struct inode *inode, void *buf, | |
6098 | size_t buflen) | |
6099 | { | |
0688e64b TM |
6100 | struct nfs4_exception exception = { |
6101 | .interruptible = true, | |
6102 | }; | |
aa9c2669 DQ |
6103 | int err; |
6104 | ||
6105 | if (!nfs_server_capable(inode, NFS_CAP_SECURITY_LABEL)) | |
6106 | return -EOPNOTSUPP; | |
6107 | ||
6108 | do { | |
c1578b76 TM |
6109 | err = _nfs4_get_security_label(inode, buf, buflen); |
6110 | trace_nfs4_get_security_label(inode, err); | |
6111 | err = nfs4_handle_exception(NFS_SERVER(inode), err, | |
aa9c2669 DQ |
6112 | &exception); |
6113 | } while (exception.retry); | |
6114 | return err; | |
6115 | } | |
6116 | ||
6117 | static int _nfs4_do_set_security_label(struct inode *inode, | |
6118 | struct nfs4_label *ilabel, | |
6119 | struct nfs_fattr *fattr, | |
6120 | struct nfs4_label *olabel) | |
6121 | { | |
6122 | ||
6123 | struct iattr sattr = {0}; | |
6124 | struct nfs_server *server = NFS_SERVER(inode); | |
6125 | const u32 bitmask[3] = { 0, 0, FATTR4_WORD2_SECURITY_LABEL }; | |
12207f69 | 6126 | struct nfs_setattrargs arg = { |
d9b67e1e AS |
6127 | .fh = NFS_FH(inode), |
6128 | .iap = &sattr, | |
aa9c2669 DQ |
6129 | .server = server, |
6130 | .bitmask = bitmask, | |
6131 | .label = ilabel, | |
6132 | }; | |
6133 | struct nfs_setattrres res = { | |
6134 | .fattr = fattr, | |
6135 | .label = olabel, | |
6136 | .server = server, | |
6137 | }; | |
6138 | struct rpc_message msg = { | |
d9b67e1e AS |
6139 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SETATTR], |
6140 | .rpc_argp = &arg, | |
6141 | .rpc_resp = &res, | |
aa9c2669 DQ |
6142 | }; |
6143 | int status; | |
6144 | ||
12207f69 | 6145 | nfs4_stateid_copy(&arg.stateid, &zero_stateid); |
aa9c2669 | 6146 | |
12207f69 | 6147 | status = nfs4_call_sync(server->client, server, &msg, &arg.seq_args, &res.seq_res, 1); |
aa9c2669 DQ |
6148 | if (status) |
6149 | dprintk("%s failed: %d\n", __func__, status); | |
6150 | ||
6151 | return status; | |
6152 | } | |
6153 | ||
6154 | static int nfs4_do_set_security_label(struct inode *inode, | |
6155 | struct nfs4_label *ilabel, | |
6156 | struct nfs_fattr *fattr, | |
6157 | struct nfs4_label *olabel) | |
6158 | { | |
6159 | struct nfs4_exception exception = { }; | |
6160 | int err; | |
6161 | ||
6162 | do { | |
c1578b76 TM |
6163 | err = _nfs4_do_set_security_label(inode, ilabel, |
6164 | fattr, olabel); | |
6165 | trace_nfs4_set_security_label(inode, err); | |
6166 | err = nfs4_handle_exception(NFS_SERVER(inode), err, | |
aa9c2669 DQ |
6167 | &exception); |
6168 | } while (exception.retry); | |
6169 | return err; | |
6170 | } | |
6171 | ||
6172 | static int | |
59301226 | 6173 | nfs4_set_security_label(struct inode *inode, const void *buf, size_t buflen) |
aa9c2669 DQ |
6174 | { |
6175 | struct nfs4_label ilabel, *olabel = NULL; | |
6176 | struct nfs_fattr fattr; | |
aa9c2669 DQ |
6177 | int status; |
6178 | ||
6179 | if (!nfs_server_capable(inode, NFS_CAP_SECURITY_LABEL)) | |
6180 | return -EOPNOTSUPP; | |
6181 | ||
6182 | nfs_fattr_init(&fattr); | |
6183 | ||
6184 | ilabel.pi = 0; | |
6185 | ilabel.lfs = 0; | |
6186 | ilabel.label = (char *)buf; | |
6187 | ilabel.len = buflen; | |
6188 | ||
aa9c2669 DQ |
6189 | olabel = nfs4_label_alloc(NFS_SERVER(inode), GFP_KERNEL); |
6190 | if (IS_ERR(olabel)) { | |
6191 | status = -PTR_ERR(olabel); | |
6192 | goto out; | |
6193 | } | |
6194 | ||
6195 | status = nfs4_do_set_security_label(inode, &ilabel, &fattr, olabel); | |
6196 | if (status == 0) | |
6197 | nfs_setsecurity(inode, &fattr, olabel); | |
6198 | ||
6199 | nfs4_label_free(olabel); | |
6200 | out: | |
aa9c2669 DQ |
6201 | return status; |
6202 | } | |
6203 | #endif /* CONFIG_NFS_V4_SECURITY_LABEL */ | |
6204 | ||
6205 | ||
f092075d CL |
6206 | static void nfs4_init_boot_verifier(const struct nfs_client *clp, |
6207 | nfs4_verifier *bootverf) | |
cd93710e CL |
6208 | { |
6209 | __be32 verf[2]; | |
6210 | ||
2c820d9a CL |
6211 | if (test_bit(NFS4CLNT_PURGE_STATE, &clp->cl_state)) { |
6212 | /* An impossible timestamp guarantees this value | |
6213 | * will never match a generated boot time. */ | |
2f86e091 DD |
6214 | verf[0] = cpu_to_be32(U32_MAX); |
6215 | verf[1] = cpu_to_be32(U32_MAX); | |
2c820d9a | 6216 | } else { |
f092075d | 6217 | struct nfs_net *nn = net_generic(clp->cl_net, nfs_net_id); |
2f86e091 DD |
6218 | u64 ns = ktime_to_ns(nn->boot_time); |
6219 | ||
6220 | verf[0] = cpu_to_be32(ns >> 32); | |
6221 | verf[1] = cpu_to_be32(ns); | |
2c820d9a | 6222 | } |
cd93710e CL |
6223 | memcpy(bootverf->data, verf, sizeof(bootverf->data)); |
6224 | } | |
6225 | ||
1aee5513 | 6226 | static size_t |
39d43d16 | 6227 | nfs4_get_uniquifier(struct nfs_client *clp, char *buf, size_t buflen) |
1aee5513 | 6228 | { |
39d43d16 TM |
6229 | struct nfs_net *nn = net_generic(clp->cl_net, nfs_net_id); |
6230 | struct nfs_netns_client *nn_clp = nn->nfs_client; | |
6231 | const char *id; | |
6232 | ||
1aee5513 TM |
6233 | buf[0] = '\0'; |
6234 | ||
39d43d16 TM |
6235 | if (nn_clp) { |
6236 | rcu_read_lock(); | |
6237 | id = rcu_dereference(nn_clp->identifier); | |
6238 | if (id) | |
6239 | strscpy(buf, id, buflen); | |
6240 | rcu_read_unlock(); | |
6241 | } | |
6242 | ||
6243 | if (nfs4_client_id_uniquifier[0] != '\0' && buf[0] == '\0') | |
1aee5513 TM |
6244 | strscpy(buf, nfs4_client_id_uniquifier, buflen); |
6245 | ||
6246 | return strlen(buf); | |
6247 | } | |
6248 | ||
a3192688 JL |
6249 | static int |
6250 | nfs4_init_nonuniform_client_string(struct nfs_client *clp) | |
e984a55a | 6251 | { |
1aee5513 TM |
6252 | char buf[NFS4_CLIENT_ID_UNIQ_LEN]; |
6253 | size_t buflen; | |
a3192688 JL |
6254 | size_t len; |
6255 | char *str; | |
e984a55a | 6256 | |
ceb3a16c | 6257 | if (clp->cl_owner_id != NULL) |
a3192688 | 6258 | return 0; |
4a3e5779 | 6259 | |
a3192688 | 6260 | rcu_read_lock(); |
848a4eb2 CL |
6261 | len = 14 + |
6262 | strlen(clp->cl_rpcclient->cl_nodename) + | |
6263 | 1 + | |
a3192688 | 6264 | strlen(rpc_peeraddr2str(clp->cl_rpcclient, RPC_DISPLAY_ADDR)) + |
a3192688 JL |
6265 | 1; |
6266 | rcu_read_unlock(); | |
1aee5513 | 6267 | |
39d43d16 | 6268 | buflen = nfs4_get_uniquifier(clp, buf, sizeof(buf)); |
1aee5513 TM |
6269 | if (buflen) |
6270 | len += buflen + 1; | |
6271 | ||
a3192688 JL |
6272 | if (len > NFS4_OPAQUE_LIMIT + 1) |
6273 | return -EINVAL; | |
6274 | ||
6275 | /* | |
6276 | * Since this string is allocated at mount time, and held until the | |
6277 | * nfs_client is destroyed, we can use GFP_KERNEL here w/o worrying | |
6278 | * about a memory-reclaim deadlock. | |
6279 | */ | |
6280 | str = kmalloc(len, GFP_KERNEL); | |
6281 | if (!str) | |
6282 | return -ENOMEM; | |
ceb3a16c | 6283 | |
e984a55a | 6284 | rcu_read_lock(); |
1aee5513 | 6285 | if (buflen) |
025bb9f8 | 6286 | scnprintf(str, len, "Linux NFSv4.0 %s/%s/%s", |
1aee5513 | 6287 | clp->cl_rpcclient->cl_nodename, buf, |
848a4eb2 | 6288 | rpc_peeraddr2str(clp->cl_rpcclient, |
025bb9f8 | 6289 | RPC_DISPLAY_ADDR)); |
848a4eb2 | 6290 | else |
025bb9f8 | 6291 | scnprintf(str, len, "Linux NFSv4.0 %s/%s", |
848a4eb2 CL |
6292 | clp->cl_rpcclient->cl_nodename, |
6293 | rpc_peeraddr2str(clp->cl_rpcclient, | |
025bb9f8 | 6294 | RPC_DISPLAY_ADDR)); |
e984a55a | 6295 | rcu_read_unlock(); |
a3192688 | 6296 | |
a3192688 JL |
6297 | clp->cl_owner_id = str; |
6298 | return 0; | |
e984a55a CL |
6299 | } |
6300 | ||
873e3851 JL |
6301 | static int |
6302 | nfs4_init_uniform_client_string(struct nfs_client *clp) | |
e984a55a | 6303 | { |
1aee5513 TM |
6304 | char buf[NFS4_CLIENT_ID_UNIQ_LEN]; |
6305 | size_t buflen; | |
873e3851 JL |
6306 | size_t len; |
6307 | char *str; | |
ceb3a16c TM |
6308 | |
6309 | if (clp->cl_owner_id != NULL) | |
873e3851 | 6310 | return 0; |
6f2ea7f2 | 6311 | |
873e3851 JL |
6312 | len = 10 + 10 + 1 + 10 + 1 + |
6313 | strlen(clp->cl_rpcclient->cl_nodename) + 1; | |
6314 | ||
39d43d16 | 6315 | buflen = nfs4_get_uniquifier(clp, buf, sizeof(buf)); |
1aee5513 TM |
6316 | if (buflen) |
6317 | len += buflen + 1; | |
6318 | ||
873e3851 JL |
6319 | if (len > NFS4_OPAQUE_LIMIT + 1) |
6320 | return -EINVAL; | |
6321 | ||
6322 | /* | |
6323 | * Since this string is allocated at mount time, and held until the | |
6324 | * nfs_client is destroyed, we can use GFP_KERNEL here w/o worrying | |
6325 | * about a memory-reclaim deadlock. | |
6326 | */ | |
6327 | str = kmalloc(len, GFP_KERNEL); | |
6328 | if (!str) | |
6329 | return -ENOMEM; | |
6330 | ||
1aee5513 TM |
6331 | if (buflen) |
6332 | scnprintf(str, len, "Linux NFSv%u.%u %s/%s", | |
6333 | clp->rpc_ops->version, clp->cl_minorversion, | |
6334 | buf, clp->cl_rpcclient->cl_nodename); | |
6335 | else | |
6336 | scnprintf(str, len, "Linux NFSv%u.%u %s", | |
6337 | clp->rpc_ops->version, clp->cl_minorversion, | |
6338 | clp->cl_rpcclient->cl_nodename); | |
873e3851 JL |
6339 | clp->cl_owner_id = str; |
6340 | return 0; | |
e984a55a CL |
6341 | } |
6342 | ||
706cb8db CL |
6343 | /* |
6344 | * nfs4_callback_up_net() starts only "tcp" and "tcp6" callback | |
6345 | * services. Advertise one based on the address family of the | |
6346 | * clientaddr. | |
6347 | */ | |
6348 | static unsigned int | |
6349 | nfs4_init_callback_netid(const struct nfs_client *clp, char *buf, size_t len) | |
6350 | { | |
6351 | if (strchr(clp->cl_ipaddr, ':') != NULL) | |
6352 | return scnprintf(buf, len, "tcp6"); | |
6353 | else | |
6354 | return scnprintf(buf, len, "tcp"); | |
6355 | } | |
6356 | ||
f11b2a1c JL |
6357 | static void nfs4_setclientid_done(struct rpc_task *task, void *calldata) |
6358 | { | |
6359 | struct nfs4_setclientid *sc = calldata; | |
6360 | ||
6361 | if (task->tk_status == 0) | |
6362 | sc->sc_cred = get_rpccred(task->tk_rqstp->rq_cred); | |
6363 | } | |
6364 | ||
6365 | static const struct rpc_call_ops nfs4_setclientid_ops = { | |
6366 | .rpc_call_done = nfs4_setclientid_done, | |
6367 | }; | |
6368 | ||
6bbb4ae8 CL |
6369 | /** |
6370 | * nfs4_proc_setclientid - Negotiate client ID | |
6371 | * @clp: state data structure | |
6372 | * @program: RPC program for NFSv4 callback service | |
6373 | * @port: IP port number for NFS4 callback service | |
a52458b4 | 6374 | * @cred: credential to use for this call |
6bbb4ae8 CL |
6375 | * @res: where to place the result |
6376 | * | |
6377 | * Returns zero, a negative errno, or a negative NFS4ERR status code. | |
6378 | */ | |
bb8b27e5 | 6379 | int nfs4_proc_setclientid(struct nfs_client *clp, u32 program, |
a52458b4 | 6380 | unsigned short port, const struct cred *cred, |
bb8b27e5 | 6381 | struct nfs4_setclientid_res *res) |
1da177e4 LT |
6382 | { |
6383 | nfs4_verifier sc_verifier; | |
6384 | struct nfs4_setclientid setclientid = { | |
6385 | .sc_verifier = &sc_verifier, | |
6386 | .sc_prog = program, | |
3a6bb738 | 6387 | .sc_clnt = clp, |
1da177e4 LT |
6388 | }; |
6389 | struct rpc_message msg = { | |
6390 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SETCLIENTID], | |
6391 | .rpc_argp = &setclientid, | |
bb8b27e5 | 6392 | .rpc_resp = res, |
286d7d6a | 6393 | .rpc_cred = cred, |
1da177e4 | 6394 | }; |
f11b2a1c JL |
6395 | struct rpc_task_setup task_setup_data = { |
6396 | .rpc_client = clp->cl_rpcclient, | |
6397 | .rpc_message = &msg, | |
6398 | .callback_ops = &nfs4_setclientid_ops, | |
6399 | .callback_data = &setclientid, | |
5a0c257f | 6400 | .flags = RPC_TASK_TIMEOUT | RPC_TASK_NO_ROUND_ROBIN, |
f11b2a1c | 6401 | }; |
7dc2993a | 6402 | unsigned long now = jiffies; |
6bbb4ae8 | 6403 | int status; |
1da177e4 | 6404 | |
de734831 | 6405 | /* nfs_client_id4 */ |
f092075d | 6406 | nfs4_init_boot_verifier(clp, &sc_verifier); |
873e3851 JL |
6407 | |
6408 | if (test_bit(NFS_CS_MIGRATION, &clp->cl_flags)) | |
6409 | status = nfs4_init_uniform_client_string(clp); | |
6410 | else | |
a3192688 | 6411 | status = nfs4_init_nonuniform_client_string(clp); |
873e3851 JL |
6412 | |
6413 | if (status) | |
6414 | goto out; | |
3a6bb738 | 6415 | |
de734831 | 6416 | /* cb_client4 */ |
706cb8db CL |
6417 | setclientid.sc_netid_len = |
6418 | nfs4_init_callback_netid(clp, | |
6419 | setclientid.sc_netid, | |
6420 | sizeof(setclientid.sc_netid)); | |
de734831 | 6421 | setclientid.sc_uaddr_len = scnprintf(setclientid.sc_uaddr, |
d4d3c507 | 6422 | sizeof(setclientid.sc_uaddr), "%s.%u.%u", |
1da177e4 LT |
6423 | clp->cl_ipaddr, port >> 8, port & 255); |
6424 | ||
3a6bb738 | 6425 | dprintk("NFS call setclientid auth=%s, '%s'\n", |
6bbb4ae8 | 6426 | clp->cl_rpcclient->cl_auth->au_ops->au_name, |
3a6bb738 | 6427 | clp->cl_owner_id); |
dae40965 AS |
6428 | |
6429 | status = nfs4_call_sync_custom(&task_setup_data); | |
f11b2a1c | 6430 | if (setclientid.sc_cred) { |
1047ec86 | 6431 | kfree(clp->cl_acceptor); |
f11b2a1c JL |
6432 | clp->cl_acceptor = rpcauth_stringify_acceptor(setclientid.sc_cred); |
6433 | put_rpccred(setclientid.sc_cred); | |
6434 | } | |
7dc2993a RM |
6435 | |
6436 | if (status == 0) | |
6437 | do_renew_lease(clp, now); | |
f11b2a1c | 6438 | out: |
c6d01c6f | 6439 | trace_nfs4_setclientid(clp, status); |
6bbb4ae8 CL |
6440 | dprintk("NFS reply setclientid: %d\n", status); |
6441 | return status; | |
1da177e4 LT |
6442 | } |
6443 | ||
6bbb4ae8 CL |
6444 | /** |
6445 | * nfs4_proc_setclientid_confirm - Confirm client ID | |
6446 | * @clp: state data structure | |
302fad7b | 6447 | * @arg: result of a previous SETCLIENTID |
a52458b4 | 6448 | * @cred: credential to use for this call |
6bbb4ae8 CL |
6449 | * |
6450 | * Returns zero, a negative errno, or a negative NFS4ERR status code. | |
6451 | */ | |
fd954ae1 | 6452 | int nfs4_proc_setclientid_confirm(struct nfs_client *clp, |
bb8b27e5 | 6453 | struct nfs4_setclientid_res *arg, |
a52458b4 | 6454 | const struct cred *cred) |
1da177e4 | 6455 | { |
1da177e4 LT |
6456 | struct rpc_message msg = { |
6457 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SETCLIENTID_CONFIRM], | |
bb8b27e5 | 6458 | .rpc_argp = arg, |
286d7d6a | 6459 | .rpc_cred = cred, |
1da177e4 | 6460 | }; |
1da177e4 LT |
6461 | int status; |
6462 | ||
6bbb4ae8 CL |
6463 | dprintk("NFS call setclientid_confirm auth=%s, (client ID %llx)\n", |
6464 | clp->cl_rpcclient->cl_auth->au_ops->au_name, | |
6465 | clp->cl_clientid); | |
5a0c257f N |
6466 | status = rpc_call_sync(clp->cl_rpcclient, &msg, |
6467 | RPC_TASK_TIMEOUT | RPC_TASK_NO_ROUND_ROBIN); | |
c6d01c6f | 6468 | trace_nfs4_setclientid_confirm(clp, status); |
6bbb4ae8 | 6469 | dprintk("NFS reply setclientid_confirm: %d\n", status); |
1da177e4 LT |
6470 | return status; |
6471 | } | |
6472 | ||
fe650407 TM |
6473 | struct nfs4_delegreturndata { |
6474 | struct nfs4_delegreturnargs args; | |
fa178f29 | 6475 | struct nfs4_delegreturnres res; |
fe650407 TM |
6476 | struct nfs_fh fh; |
6477 | nfs4_stateid stateid; | |
26e976a8 | 6478 | unsigned long timestamp; |
586f1c39 TM |
6479 | struct { |
6480 | struct nfs4_layoutreturn_args arg; | |
6481 | struct nfs4_layoutreturn_res res; | |
4d796d75 | 6482 | struct nfs4_xdr_opaque_data ld_private; |
586f1c39 TM |
6483 | u32 roc_barrier; |
6484 | bool roc; | |
6485 | } lr; | |
fa178f29 | 6486 | struct nfs_fattr fattr; |
fe650407 | 6487 | int rpc_status; |
039b756a | 6488 | struct inode *inode; |
fe650407 TM |
6489 | }; |
6490 | ||
fe650407 TM |
6491 | static void nfs4_delegreturn_done(struct rpc_task *task, void *calldata) |
6492 | { | |
6493 | struct nfs4_delegreturndata *data = calldata; | |
e0dba012 TM |
6494 | struct nfs4_exception exception = { |
6495 | .inode = data->inode, | |
6496 | .stateid = &data->stateid, | |
dfe1fe75 | 6497 | .task_is_privileged = data->args.seq_args.sa_privileged, |
e0dba012 | 6498 | }; |
938e1010 | 6499 | |
14516c3a TM |
6500 | if (!nfs4_sequence_done(task, &data->res.seq_res)) |
6501 | return; | |
938e1010 | 6502 | |
ca8acf8d | 6503 | trace_nfs4_delegreturn_exit(&data->args, &data->res, task->tk_status); |
586f1c39 TM |
6504 | |
6505 | /* Handle Layoutreturn errors */ | |
078000d0 TM |
6506 | if (pnfs_roc_done(task, &data->args.lr_args, &data->res.lr_res, |
6507 | &data->res.lr_ret) == -EAGAIN) | |
287a9c55 | 6508 | goto out_restart; |
586f1c39 | 6509 | |
79708861 | 6510 | switch (task->tk_status) { |
79708861 | 6511 | case 0: |
fa178f29 | 6512 | renew_lease(data->res.server, data->timestamp); |
23ea44c2 | 6513 | break; |
c97cf606 TM |
6514 | case -NFS4ERR_ADMIN_REVOKED: |
6515 | case -NFS4ERR_DELEG_REVOKED: | |
26d36301 TM |
6516 | case -NFS4ERR_EXPIRED: |
6517 | nfs4_free_revoked_stateid(data->res.server, | |
6518 | data->args.stateid, | |
6519 | task->tk_msg.rpc_cred); | |
df561f66 | 6520 | fallthrough; |
c97cf606 | 6521 | case -NFS4ERR_BAD_STATEID: |
c97cf606 | 6522 | case -NFS4ERR_STALE_STATEID: |
244fcd2f | 6523 | case -ETIMEDOUT: |
c97cf606 TM |
6524 | task->tk_status = 0; |
6525 | break; | |
12f275cd | 6526 | case -NFS4ERR_OLD_STATEID: |
246afc0a TM |
6527 | if (!nfs4_refresh_delegation_stateid(&data->stateid, data->inode)) |
6528 | nfs4_stateid_seqid_inc(&data->stateid); | |
70d136b2 TM |
6529 | if (data->args.bitmask) { |
6530 | data->args.bitmask = NULL; | |
6531 | data->res.fattr = NULL; | |
6532 | } | |
246afc0a | 6533 | goto out_restart; |
8ac2b422 TM |
6534 | case -NFS4ERR_ACCESS: |
6535 | if (data->args.bitmask) { | |
6536 | data->args.bitmask = NULL; | |
6537 | data->res.fattr = NULL; | |
140087fd | 6538 | goto out_restart; |
8ac2b422 | 6539 | } |
df561f66 | 6540 | fallthrough; |
79708861 | 6541 | default: |
e0dba012 TM |
6542 | task->tk_status = nfs4_async_handle_exception(task, |
6543 | data->res.server, task->tk_status, | |
6544 | &exception); | |
6545 | if (exception.retry) | |
140087fd | 6546 | goto out_restart; |
79708861 | 6547 | } |
d51f91d2 | 6548 | nfs_delegation_mark_returned(data->inode, data->args.stateid); |
79708861 | 6549 | data->rpc_status = task->tk_status; |
140087fd | 6550 | return; |
140087fd TM |
6551 | out_restart: |
6552 | task->tk_status = 0; | |
6553 | rpc_restart_call_prepare(task); | |
fe650407 TM |
6554 | } |
6555 | ||
6556 | static void nfs4_delegreturn_release(void *calldata) | |
6557 | { | |
039b756a | 6558 | struct nfs4_delegreturndata *data = calldata; |
ea7c38fe | 6559 | struct inode *inode = data->inode; |
039b756a | 6560 | |
078000d0 TM |
6561 | if (data->lr.roc) |
6562 | pnfs_roc_release(&data->lr.arg, &data->lr.res, | |
6563 | data->res.lr_ret); | |
ea7c38fe | 6564 | if (inode) { |
0bc2c9b4 | 6565 | nfs_post_op_update_inode_force_wcc(inode, &data->fattr); |
ea7c38fe TM |
6566 | nfs_iput_and_deactive(inode); |
6567 | } | |
fe650407 TM |
6568 | kfree(calldata); |
6569 | } | |
6570 | ||
938e1010 AA |
6571 | static void nfs4_delegreturn_prepare(struct rpc_task *task, void *data) |
6572 | { | |
6573 | struct nfs4_delegreturndata *d_data; | |
c8bf7073 | 6574 | struct pnfs_layout_hdr *lo; |
938e1010 AA |
6575 | |
6576 | d_data = (struct nfs4_delegreturndata *)data; | |
6577 | ||
5326de9e TM |
6578 | if (!d_data->lr.roc && nfs4_wait_on_layoutreturn(d_data->inode, task)) { |
6579 | nfs4_sequence_done(task, &d_data->res.seq_res); | |
500d701f | 6580 | return; |
5326de9e | 6581 | } |
500d701f | 6582 | |
c8bf7073 TM |
6583 | lo = d_data->args.lr_args ? d_data->args.lr_args->layout : NULL; |
6584 | if (lo && !pnfs_layout_is_valid(lo)) { | |
6585 | d_data->args.lr_args = NULL; | |
6586 | d_data->res.lr_res = NULL; | |
6587 | } | |
6588 | ||
42e1cca7 | 6589 | nfs4_setup_sequence(d_data->res.server->nfs_client, |
d9afbd1b TM |
6590 | &d_data->args.seq_args, |
6591 | &d_data->res.seq_res, | |
6592 | task); | |
938e1010 | 6593 | } |
938e1010 | 6594 | |
c8d149f3 | 6595 | static const struct rpc_call_ops nfs4_delegreturn_ops = { |
938e1010 | 6596 | .rpc_call_prepare = nfs4_delegreturn_prepare, |
fe650407 TM |
6597 | .rpc_call_done = nfs4_delegreturn_done, |
6598 | .rpc_release = nfs4_delegreturn_release, | |
6599 | }; | |
6600 | ||
a52458b4 | 6601 | static int _nfs4_proc_delegreturn(struct inode *inode, const struct cred *cred, const nfs4_stateid *stateid, int issync) |
fe650407 TM |
6602 | { |
6603 | struct nfs4_delegreturndata *data; | |
fa178f29 | 6604 | struct nfs_server *server = NFS_SERVER(inode); |
fe650407 | 6605 | struct rpc_task *task; |
5138fde0 TM |
6606 | struct rpc_message msg = { |
6607 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_DELEGRETURN], | |
6608 | .rpc_cred = cred, | |
6609 | }; | |
c970aa85 TM |
6610 | struct rpc_task_setup task_setup_data = { |
6611 | .rpc_client = server->client, | |
5138fde0 | 6612 | .rpc_message = &msg, |
c970aa85 | 6613 | .callback_ops = &nfs4_delegreturn_ops, |
85e39fee | 6614 | .flags = RPC_TASK_ASYNC | RPC_TASK_TIMEOUT | RPC_TASK_MOVEABLE, |
c970aa85 | 6615 | }; |
e6f81075 | 6616 | int status = 0; |
fe650407 | 6617 | |
8535b2be | 6618 | data = kzalloc(sizeof(*data), GFP_NOFS); |
fe650407 TM |
6619 | if (data == NULL) |
6620 | return -ENOMEM; | |
99ade3c7 AE |
6621 | |
6622 | nfs4_state_protect(server->nfs_client, | |
6623 | NFS_SP4_MACH_CRED_CLEANUP, | |
6624 | &task_setup_data.rpc_client, &msg); | |
6625 | ||
fe650407 TM |
6626 | data->args.fhandle = &data->fh; |
6627 | data->args.stateid = &data->stateid; | |
332d1a03 TM |
6628 | nfs4_bitmask_set(data->args.bitmask_store, |
6629 | server->cache_consistency_bitmask, inode, server, | |
6630 | NULL); | |
6631 | data->args.bitmask = data->args.bitmask_store; | |
fe650407 | 6632 | nfs_copy_fh(&data->fh, NFS_FH(inode)); |
f597c537 | 6633 | nfs4_stateid_copy(&data->stateid, stateid); |
fa178f29 TM |
6634 | data->res.fattr = &data->fattr; |
6635 | data->res.server = server; | |
586f1c39 | 6636 | data->res.lr_ret = -NFS4ERR_NOMATCHING_LAYOUT; |
4d796d75 | 6637 | data->lr.arg.ld_private = &data->lr.ld_private; |
5138fde0 | 6638 | nfs_fattr_init(data->res.fattr); |
26e976a8 | 6639 | data->timestamp = jiffies; |
fe650407 | 6640 | data->rpc_status = 0; |
ea7c38fe | 6641 | data->inode = nfs_igrab_and_active(inode); |
078000d0 TM |
6642 | if (data->inode || issync) { |
6643 | data->lr.roc = pnfs_roc(inode, &data->lr.arg, &data->lr.res, | |
6644 | cred); | |
1c5bd76d TM |
6645 | if (data->lr.roc) { |
6646 | data->args.lr_args = &data->lr.arg; | |
6647 | data->res.lr_res = &data->lr.res; | |
6648 | } | |
6649 | } | |
fe650407 | 6650 | |
dfe1fe75 TM |
6651 | if (!data->inode) |
6652 | nfs4_init_sequence(&data->args.seq_args, &data->res.seq_res, 1, | |
6653 | 1); | |
6654 | else | |
6655 | nfs4_init_sequence(&data->args.seq_args, &data->res.seq_res, 1, | |
6656 | 0); | |
c970aa85 | 6657 | task_setup_data.callback_data = data; |
1174dd1f TM |
6658 | msg.rpc_argp = &data->args; |
6659 | msg.rpc_resp = &data->res; | |
c970aa85 | 6660 | task = rpc_run_task(&task_setup_data); |
7a1218a2 | 6661 | if (IS_ERR(task)) |
fe650407 | 6662 | return PTR_ERR(task); |
e6f81075 TM |
6663 | if (!issync) |
6664 | goto out; | |
820bf85c | 6665 | status = rpc_wait_for_completion_task(task); |
e6f81075 TM |
6666 | if (status != 0) |
6667 | goto out; | |
6668 | status = data->rpc_status; | |
e6f81075 | 6669 | out: |
e6b3c4db | 6670 | rpc_put_task(task); |
fe650407 | 6671 | return status; |
1da177e4 LT |
6672 | } |
6673 | ||
a52458b4 | 6674 | int nfs4_proc_delegreturn(struct inode *inode, const struct cred *cred, const nfs4_stateid *stateid, int issync) |
1da177e4 LT |
6675 | { |
6676 | struct nfs_server *server = NFS_SERVER(inode); | |
6677 | struct nfs4_exception exception = { }; | |
6678 | int err; | |
6679 | do { | |
e6f81075 | 6680 | err = _nfs4_proc_delegreturn(inode, cred, stateid, issync); |
48c9579a | 6681 | trace_nfs4_delegreturn(inode, stateid, err); |
1da177e4 LT |
6682 | switch (err) { |
6683 | case -NFS4ERR_STALE_STATEID: | |
6684 | case -NFS4ERR_EXPIRED: | |
1da177e4 LT |
6685 | case 0: |
6686 | return 0; | |
6687 | } | |
6688 | err = nfs4_handle_exception(server, err, &exception); | |
6689 | } while (exception.retry); | |
6690 | return err; | |
6691 | } | |
6692 | ||
1da177e4 LT |
6693 | static int _nfs4_proc_getlk(struct nfs4_state *state, int cmd, struct file_lock *request) |
6694 | { | |
6695 | struct inode *inode = state->inode; | |
6696 | struct nfs_server *server = NFS_SERVER(inode); | |
7539bbab | 6697 | struct nfs_client *clp = server->nfs_client; |
911d1aaf | 6698 | struct nfs_lockt_args arg = { |
1da177e4 | 6699 | .fh = NFS_FH(inode), |
911d1aaf | 6700 | .fl = request, |
1da177e4 | 6701 | }; |
911d1aaf TM |
6702 | struct nfs_lockt_res res = { |
6703 | .denied = request, | |
1da177e4 LT |
6704 | }; |
6705 | struct rpc_message msg = { | |
6706 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOCKT], | |
d9b67e1e AS |
6707 | .rpc_argp = &arg, |
6708 | .rpc_resp = &res, | |
1da177e4 LT |
6709 | .rpc_cred = state->owner->so_cred, |
6710 | }; | |
1da177e4 LT |
6711 | struct nfs4_lock_state *lsp; |
6712 | int status; | |
6713 | ||
911d1aaf | 6714 | arg.lock_owner.clientid = clp->cl_clientid; |
8d0a8a9d TM |
6715 | status = nfs4_set_lock_state(state, request); |
6716 | if (status != 0) | |
6717 | goto out; | |
6718 | lsp = request->fl_u.nfs4_fl.owner; | |
48c22eb2 | 6719 | arg.lock_owner.id = lsp->ls_seqid.owner_id; |
d035c36c | 6720 | arg.lock_owner.s_dev = server->s_dev; |
7c513058 | 6721 | status = nfs4_call_sync(server->client, server, &msg, &arg.seq_args, &res.seq_res, 1); |
911d1aaf TM |
6722 | switch (status) { |
6723 | case 0: | |
6724 | request->fl_type = F_UNLCK; | |
6725 | break; | |
6726 | case -NFS4ERR_DENIED: | |
6727 | status = 0; | |
1da177e4 | 6728 | } |
70cc6487 | 6729 | request->fl_ops->fl_release_private(request); |
a6f951dd | 6730 | request->fl_ops = NULL; |
8d0a8a9d | 6731 | out: |
1da177e4 LT |
6732 | return status; |
6733 | } | |
6734 | ||
6735 | static int nfs4_proc_getlk(struct nfs4_state *state, int cmd, struct file_lock *request) | |
6736 | { | |
0688e64b TM |
6737 | struct nfs4_exception exception = { |
6738 | .interruptible = true, | |
6739 | }; | |
1da177e4 LT |
6740 | int err; |
6741 | ||
6742 | do { | |
d1b748a5 TM |
6743 | err = _nfs4_proc_getlk(state, cmd, request); |
6744 | trace_nfs4_get_lock(request, state, cmd, err); | |
6745 | err = nfs4_handle_exception(NFS_SERVER(state->inode), err, | |
1da177e4 LT |
6746 | &exception); |
6747 | } while (exception.retry); | |
6748 | return err; | |
6749 | } | |
6750 | ||
32c6e7ee TM |
6751 | /* |
6752 | * Update the seqid of a lock stateid after receiving | |
6753 | * NFS4ERR_OLD_STATEID | |
6754 | */ | |
6755 | static bool nfs4_refresh_lock_old_stateid(nfs4_stateid *dst, | |
6756 | struct nfs4_lock_state *lsp) | |
6757 | { | |
6758 | struct nfs4_state *state = lsp->ls_state; | |
6759 | bool ret = false; | |
6760 | ||
6761 | spin_lock(&state->state_lock); | |
6762 | if (!nfs4_stateid_match_other(dst, &lsp->ls_stateid)) | |
6763 | goto out; | |
6764 | if (!nfs4_stateid_is_newer(&lsp->ls_stateid, dst)) | |
6765 | nfs4_stateid_seqid_inc(dst); | |
6766 | else | |
6767 | dst->seqid = lsp->ls_stateid.seqid; | |
6768 | ret = true; | |
6769 | out: | |
6770 | spin_unlock(&state->state_lock); | |
6771 | return ret; | |
6772 | } | |
6773 | ||
6774 | static bool nfs4_sync_lock_stateid(nfs4_stateid *dst, | |
6775 | struct nfs4_lock_state *lsp) | |
6776 | { | |
6777 | struct nfs4_state *state = lsp->ls_state; | |
6778 | bool ret; | |
6779 | ||
6780 | spin_lock(&state->state_lock); | |
6781 | ret = !nfs4_stateid_match_other(dst, &lsp->ls_stateid); | |
6782 | nfs4_stateid_copy(dst, &lsp->ls_stateid); | |
6783 | spin_unlock(&state->state_lock); | |
6784 | return ret; | |
6785 | } | |
6786 | ||
faf5f49c | 6787 | struct nfs4_unlockdata { |
911d1aaf TM |
6788 | struct nfs_locku_args arg; |
6789 | struct nfs_locku_res res; | |
faf5f49c TM |
6790 | struct nfs4_lock_state *lsp; |
6791 | struct nfs_open_context *ctx; | |
f30cb757 | 6792 | struct nfs_lock_context *l_ctx; |
911d1aaf | 6793 | struct file_lock fl; |
516285eb | 6794 | struct nfs_server *server; |
26e976a8 | 6795 | unsigned long timestamp; |
faf5f49c TM |
6796 | }; |
6797 | ||
911d1aaf TM |
6798 | static struct nfs4_unlockdata *nfs4_alloc_unlockdata(struct file_lock *fl, |
6799 | struct nfs_open_context *ctx, | |
6800 | struct nfs4_lock_state *lsp, | |
6801 | struct nfs_seqid *seqid) | |
6802 | { | |
6803 | struct nfs4_unlockdata *p; | |
32c6e7ee TM |
6804 | struct nfs4_state *state = lsp->ls_state; |
6805 | struct inode *inode = state->inode; | |
911d1aaf | 6806 | |
8535b2be | 6807 | p = kzalloc(sizeof(*p), GFP_NOFS); |
911d1aaf TM |
6808 | if (p == NULL) |
6809 | return NULL; | |
6810 | p->arg.fh = NFS_FH(inode); | |
6811 | p->arg.fl = &p->fl; | |
6812 | p->arg.seqid = seqid; | |
c1d51931 | 6813 | p->res.seqid = seqid; |
911d1aaf | 6814 | p->lsp = lsp; |
911d1aaf TM |
6815 | /* Ensure we don't close file until we're done freeing locks! */ |
6816 | p->ctx = get_nfs_open_context(ctx); | |
f30cb757 | 6817 | p->l_ctx = nfs_get_lock_context(ctx); |
7b587e1a N |
6818 | locks_init_lock(&p->fl); |
6819 | locks_copy_lock(&p->fl, fl); | |
911d1aaf | 6820 | p->server = NFS_SERVER(inode); |
32c6e7ee TM |
6821 | spin_lock(&state->state_lock); |
6822 | nfs4_stateid_copy(&p->arg.stateid, &lsp->ls_stateid); | |
6823 | spin_unlock(&state->state_lock); | |
911d1aaf TM |
6824 | return p; |
6825 | } | |
6826 | ||
06f814a3 | 6827 | static void nfs4_locku_release_calldata(void *data) |
faf5f49c | 6828 | { |
963d8fe5 | 6829 | struct nfs4_unlockdata *calldata = data; |
911d1aaf | 6830 | nfs_free_seqid(calldata->arg.seqid); |
06f814a3 | 6831 | nfs4_put_lock_state(calldata->lsp); |
f30cb757 | 6832 | nfs_put_lock_context(calldata->l_ctx); |
06f814a3 TM |
6833 | put_nfs_open_context(calldata->ctx); |
6834 | kfree(calldata); | |
faf5f49c TM |
6835 | } |
6836 | ||
963d8fe5 | 6837 | static void nfs4_locku_done(struct rpc_task *task, void *data) |
faf5f49c | 6838 | { |
963d8fe5 | 6839 | struct nfs4_unlockdata *calldata = data; |
82571552 TM |
6840 | struct nfs4_exception exception = { |
6841 | .inode = calldata->lsp->ls_state->inode, | |
6842 | .stateid = &calldata->arg.stateid, | |
6843 | }; | |
faf5f49c | 6844 | |
14516c3a TM |
6845 | if (!nfs4_sequence_done(task, &calldata->res.seq_res)) |
6846 | return; | |
faf5f49c TM |
6847 | switch (task->tk_status) { |
6848 | case 0: | |
26e976a8 | 6849 | renew_lease(calldata->server, calldata->timestamp); |
75575ddf | 6850 | locks_lock_inode_wait(calldata->lsp->ls_state->inode, &calldata->fl); |
c69899a1 TM |
6851 | if (nfs4_update_lock_stateid(calldata->lsp, |
6852 | &calldata->res.stateid)) | |
6853 | break; | |
df561f66 | 6854 | fallthrough; |
26d36301 TM |
6855 | case -NFS4ERR_ADMIN_REVOKED: |
6856 | case -NFS4ERR_EXPIRED: | |
6857 | nfs4_free_revoked_stateid(calldata->server, | |
6858 | &calldata->arg.stateid, | |
6859 | task->tk_msg.rpc_cred); | |
df561f66 | 6860 | fallthrough; |
9e33bed5 | 6861 | case -NFS4ERR_BAD_STATEID: |
faf5f49c | 6862 | case -NFS4ERR_STALE_STATEID: |
32c6e7ee TM |
6863 | if (nfs4_sync_lock_stateid(&calldata->arg.stateid, |
6864 | calldata->lsp)) | |
6865 | rpc_restart_call_prepare(task); | |
6866 | break; | |
6867 | case -NFS4ERR_OLD_STATEID: | |
6868 | if (nfs4_refresh_lock_old_stateid(&calldata->arg.stateid, | |
6869 | calldata->lsp)) | |
425c1d4e | 6870 | rpc_restart_call_prepare(task); |
faf5f49c TM |
6871 | break; |
6872 | default: | |
82571552 TM |
6873 | task->tk_status = nfs4_async_handle_exception(task, |
6874 | calldata->server, task->tk_status, | |
6875 | &exception); | |
6876 | if (exception.retry) | |
d00c5d43 | 6877 | rpc_restart_call_prepare(task); |
faf5f49c | 6878 | } |
2b1bc308 | 6879 | nfs_release_seqid(calldata->arg.seqid); |
faf5f49c TM |
6880 | } |
6881 | ||
4ce70ada | 6882 | static void nfs4_locku_prepare(struct rpc_task *task, void *data) |
faf5f49c | 6883 | { |
4ce70ada | 6884 | struct nfs4_unlockdata *calldata = data; |
faf5f49c | 6885 | |
f30cb757 BC |
6886 | if (test_bit(NFS_CONTEXT_UNLOCK, &calldata->l_ctx->open_context->flags) && |
6887 | nfs_async_iocounter_wait(task, calldata->l_ctx)) | |
6888 | return; | |
6889 | ||
911d1aaf | 6890 | if (nfs_wait_on_sequence(calldata->arg.seqid, task) != 0) |
c8da19b9 | 6891 | goto out_wait; |
795a88c9 | 6892 | if (test_bit(NFS_LOCK_INITIALIZED, &calldata->lsp->ls_flags) == 0) { |
963d8fe5 | 6893 | /* Note: exit _without_ running nfs4_locku_done */ |
c8da19b9 | 6894 | goto out_no_action; |
faf5f49c | 6895 | } |
26e976a8 | 6896 | calldata->timestamp = jiffies; |
42e1cca7 | 6897 | if (nfs4_setup_sequence(calldata->server->nfs_client, |
a893693c | 6898 | &calldata->arg.seq_args, |
2240a9e2 TM |
6899 | &calldata->res.seq_res, |
6900 | task) != 0) | |
6901 | nfs_release_seqid(calldata->arg.seqid); | |
c8da19b9 TM |
6902 | return; |
6903 | out_no_action: | |
6904 | task->tk_action = NULL; | |
6905 | out_wait: | |
6906 | nfs4_sequence_done(task, &calldata->res.seq_res); | |
faf5f49c TM |
6907 | } |
6908 | ||
963d8fe5 | 6909 | static const struct rpc_call_ops nfs4_locku_ops = { |
4ce70ada | 6910 | .rpc_call_prepare = nfs4_locku_prepare, |
963d8fe5 | 6911 | .rpc_call_done = nfs4_locku_done, |
06f814a3 | 6912 | .rpc_release = nfs4_locku_release_calldata, |
963d8fe5 TM |
6913 | }; |
6914 | ||
a5d16a4d TM |
6915 | static struct rpc_task *nfs4_do_unlck(struct file_lock *fl, |
6916 | struct nfs_open_context *ctx, | |
6917 | struct nfs4_lock_state *lsp, | |
6918 | struct nfs_seqid *seqid) | |
6919 | { | |
6920 | struct nfs4_unlockdata *data; | |
5138fde0 TM |
6921 | struct rpc_message msg = { |
6922 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOCKU], | |
6923 | .rpc_cred = ctx->cred, | |
6924 | }; | |
c970aa85 TM |
6925 | struct rpc_task_setup task_setup_data = { |
6926 | .rpc_client = NFS_CLIENT(lsp->ls_state->inode), | |
5138fde0 | 6927 | .rpc_message = &msg, |
c970aa85 | 6928 | .callback_ops = &nfs4_locku_ops, |
101070ca | 6929 | .workqueue = nfsiod_workqueue, |
c970aa85 TM |
6930 | .flags = RPC_TASK_ASYNC, |
6931 | }; | |
85e39fee OK |
6932 | struct nfs_client *client = |
6933 | NFS_SERVER(lsp->ls_state->inode)->nfs_client; | |
6934 | ||
6935 | if (client->cl_minorversion) | |
6936 | task_setup_data.flags |= RPC_TASK_MOVEABLE; | |
a5d16a4d | 6937 | |
fa940720 WAA |
6938 | nfs4_state_protect(NFS_SERVER(lsp->ls_state->inode)->nfs_client, |
6939 | NFS_SP4_MACH_CRED_CLEANUP, &task_setup_data.rpc_client, &msg); | |
6940 | ||
137d6aca FF |
6941 | /* Ensure this is an unlock - when canceling a lock, the |
6942 | * canceled lock is passed in, and it won't be an unlock. | |
6943 | */ | |
6944 | fl->fl_type = F_UNLCK; | |
f30cb757 BC |
6945 | if (fl->fl_flags & FL_CLOSE) |
6946 | set_bit(NFS_CONTEXT_UNLOCK, &ctx->flags); | |
137d6aca | 6947 | |
a5d16a4d TM |
6948 | data = nfs4_alloc_unlockdata(fl, ctx, lsp, seqid); |
6949 | if (data == NULL) { | |
6950 | nfs_free_seqid(seqid); | |
6951 | return ERR_PTR(-ENOMEM); | |
6952 | } | |
6953 | ||
fba83f34 | 6954 | nfs4_init_sequence(&data->arg.seq_args, &data->res.seq_res, 1, 0); |
1174dd1f TM |
6955 | msg.rpc_argp = &data->arg; |
6956 | msg.rpc_resp = &data->res; | |
c970aa85 TM |
6957 | task_setup_data.callback_data = data; |
6958 | return rpc_run_task(&task_setup_data); | |
a5d16a4d TM |
6959 | } |
6960 | ||
faf5f49c TM |
6961 | static int nfs4_proc_unlck(struct nfs4_state *state, int cmd, struct file_lock *request) |
6962 | { | |
65b62a29 TM |
6963 | struct inode *inode = state->inode; |
6964 | struct nfs4_state_owner *sp = state->owner; | |
6965 | struct nfs_inode *nfsi = NFS_I(inode); | |
911d1aaf | 6966 | struct nfs_seqid *seqid; |
1da177e4 | 6967 | struct nfs4_lock_state *lsp; |
06f814a3 | 6968 | struct rpc_task *task; |
b4019c0e | 6969 | struct nfs_seqid *(*alloc_seqid)(struct nfs_seqid_counter *, gfp_t); |
06f814a3 | 6970 | int status = 0; |
536ff0f8 | 6971 | unsigned char fl_flags = request->fl_flags; |
faf5f49c | 6972 | |
8d0a8a9d | 6973 | status = nfs4_set_lock_state(state, request); |
9b073574 TM |
6974 | /* Unlock _before_ we do the RPC call */ |
6975 | request->fl_flags |= FL_EXISTS; | |
65b62a29 TM |
6976 | /* Exclude nfs_delegation_claim_locks() */ |
6977 | mutex_lock(&sp->so_delegreturn_mutex); | |
6978 | /* Exclude nfs4_reclaim_open_stateid() - note nesting! */ | |
19e03c57 | 6979 | down_read(&nfsi->rwsem); |
75575ddf | 6980 | if (locks_lock_inode_wait(inode, request) == -ENOENT) { |
19e03c57 | 6981 | up_read(&nfsi->rwsem); |
65b62a29 | 6982 | mutex_unlock(&sp->so_delegreturn_mutex); |
9b073574 | 6983 | goto out; |
19e03c57 TM |
6984 | } |
6985 | up_read(&nfsi->rwsem); | |
65b62a29 | 6986 | mutex_unlock(&sp->so_delegreturn_mutex); |
8d0a8a9d | 6987 | if (status != 0) |
9b073574 TM |
6988 | goto out; |
6989 | /* Is this a delegated lock? */ | |
8d0a8a9d | 6990 | lsp = request->fl_u.nfs4_fl.owner; |
c5a2a15f TM |
6991 | if (test_bit(NFS_LOCK_INITIALIZED, &lsp->ls_flags) == 0) |
6992 | goto out; | |
b4019c0e TM |
6993 | alloc_seqid = NFS_SERVER(inode)->nfs_client->cl_mvops->alloc_seqid; |
6994 | seqid = alloc_seqid(&lsp->ls_seqid, GFP_KERNEL); | |
9b073574 | 6995 | status = -ENOMEM; |
badc76dd | 6996 | if (IS_ERR(seqid)) |
9b073574 | 6997 | goto out; |
cd3758e3 | 6998 | task = nfs4_do_unlck(request, nfs_file_open_context(request->fl_file), lsp, seqid); |
a5d16a4d TM |
6999 | status = PTR_ERR(task); |
7000 | if (IS_ERR(task)) | |
9b073574 | 7001 | goto out; |
820bf85c | 7002 | status = rpc_wait_for_completion_task(task); |
e6b3c4db | 7003 | rpc_put_task(task); |
9b073574 | 7004 | out: |
536ff0f8 | 7005 | request->fl_flags = fl_flags; |
d1b748a5 | 7006 | trace_nfs4_unlock(request, state, F_SETLK, status); |
1da177e4 LT |
7007 | return status; |
7008 | } | |
7009 | ||
a5d16a4d TM |
7010 | struct nfs4_lockdata { |
7011 | struct nfs_lock_args arg; | |
7012 | struct nfs_lock_res res; | |
7013 | struct nfs4_lock_state *lsp; | |
7014 | struct nfs_open_context *ctx; | |
7015 | struct file_lock fl; | |
26e976a8 | 7016 | unsigned long timestamp; |
a5d16a4d TM |
7017 | int rpc_status; |
7018 | int cancelled; | |
66179efe | 7019 | struct nfs_server *server; |
a5d16a4d TM |
7020 | }; |
7021 | ||
7022 | static struct nfs4_lockdata *nfs4_alloc_lockdata(struct file_lock *fl, | |
8535b2be TM |
7023 | struct nfs_open_context *ctx, struct nfs4_lock_state *lsp, |
7024 | gfp_t gfp_mask) | |
1da177e4 | 7025 | { |
a5d16a4d TM |
7026 | struct nfs4_lockdata *p; |
7027 | struct inode *inode = lsp->ls_state->inode; | |
1da177e4 | 7028 | struct nfs_server *server = NFS_SERVER(inode); |
b4019c0e | 7029 | struct nfs_seqid *(*alloc_seqid)(struct nfs_seqid_counter *, gfp_t); |
a5d16a4d | 7030 | |
8535b2be | 7031 | p = kzalloc(sizeof(*p), gfp_mask); |
a5d16a4d TM |
7032 | if (p == NULL) |
7033 | return NULL; | |
7034 | ||
7035 | p->arg.fh = NFS_FH(inode); | |
7036 | p->arg.fl = &p->fl; | |
8535b2be | 7037 | p->arg.open_seqid = nfs_alloc_seqid(&lsp->ls_state->owner->so_seqid, gfp_mask); |
badc76dd | 7038 | if (IS_ERR(p->arg.open_seqid)) |
2f74c0a0 | 7039 | goto out_free; |
b4019c0e TM |
7040 | alloc_seqid = server->nfs_client->cl_mvops->alloc_seqid; |
7041 | p->arg.lock_seqid = alloc_seqid(&lsp->ls_seqid, gfp_mask); | |
badc76dd | 7042 | if (IS_ERR(p->arg.lock_seqid)) |
2f74c0a0 | 7043 | goto out_free_seqid; |
7539bbab | 7044 | p->arg.lock_owner.clientid = server->nfs_client->cl_clientid; |
48c22eb2 | 7045 | p->arg.lock_owner.id = lsp->ls_seqid.owner_id; |
d035c36c | 7046 | p->arg.lock_owner.s_dev = server->s_dev; |
c1d51931 | 7047 | p->res.lock_seqid = p->arg.lock_seqid; |
a5d16a4d | 7048 | p->lsp = lsp; |
66179efe | 7049 | p->server = server; |
a5d16a4d | 7050 | p->ctx = get_nfs_open_context(ctx); |
7b587e1a N |
7051 | locks_init_lock(&p->fl); |
7052 | locks_copy_lock(&p->fl, fl); | |
a5d16a4d | 7053 | return p; |
2f74c0a0 TM |
7054 | out_free_seqid: |
7055 | nfs_free_seqid(p->arg.open_seqid); | |
a5d16a4d TM |
7056 | out_free: |
7057 | kfree(p); | |
7058 | return NULL; | |
7059 | } | |
7060 | ||
7061 | static void nfs4_lock_prepare(struct rpc_task *task, void *calldata) | |
7062 | { | |
7063 | struct nfs4_lockdata *data = calldata; | |
7064 | struct nfs4_state *state = data->lsp->ls_state; | |
06735b34 | 7065 | |
3110ff80 | 7066 | dprintk("%s: begin!\n", __func__); |
2f74c0a0 | 7067 | if (nfs_wait_on_sequence(data->arg.lock_seqid, task) != 0) |
c8da19b9 | 7068 | goto out_wait; |
a5d16a4d | 7069 | /* Do we need to do an open_to_lock_owner? */ |
6b447539 | 7070 | if (!test_bit(NFS_LOCK_INITIALIZED, &data->lsp->ls_flags)) { |
8fe72bac | 7071 | if (nfs_wait_on_sequence(data->arg.open_seqid, task) != 0) { |
2240a9e2 | 7072 | goto out_release_lock_seqid; |
8fe72bac | 7073 | } |
425c1d4e TM |
7074 | nfs4_stateid_copy(&data->arg.open_stateid, |
7075 | &state->open_stateid); | |
a5d16a4d | 7076 | data->arg.new_lock_owner = 1; |
c1d51931 | 7077 | data->res.open_seqid = data->arg.open_seqid; |
425c1d4e | 7078 | } else { |
2f74c0a0 | 7079 | data->arg.new_lock_owner = 0; |
425c1d4e TM |
7080 | nfs4_stateid_copy(&data->arg.lock_stateid, |
7081 | &data->lsp->ls_stateid); | |
7082 | } | |
5d422301 TM |
7083 | if (!nfs4_valid_open_stateid(state)) { |
7084 | data->rpc_status = -EBADF; | |
7085 | task->tk_action = NULL; | |
7086 | goto out_release_open_seqid; | |
7087 | } | |
26e976a8 | 7088 | data->timestamp = jiffies; |
42e1cca7 | 7089 | if (nfs4_setup_sequence(data->server->nfs_client, |
035168ab | 7090 | &data->arg.seq_args, |
2240a9e2 | 7091 | &data->res.seq_res, |
d9afbd1b | 7092 | task) == 0) |
66179efe | 7093 | return; |
5d422301 | 7094 | out_release_open_seqid: |
2240a9e2 TM |
7095 | nfs_release_seqid(data->arg.open_seqid); |
7096 | out_release_lock_seqid: | |
7097 | nfs_release_seqid(data->arg.lock_seqid); | |
c8da19b9 TM |
7098 | out_wait: |
7099 | nfs4_sequence_done(task, &data->res.seq_res); | |
8fe72bac | 7100 | dprintk("%s: done!, ret = %d\n", __func__, data->rpc_status); |
b257957e AB |
7101 | } |
7102 | ||
a5d16a4d TM |
7103 | static void nfs4_lock_done(struct rpc_task *task, void *calldata) |
7104 | { | |
7105 | struct nfs4_lockdata *data = calldata; | |
39071e6f | 7106 | struct nfs4_lock_state *lsp = data->lsp; |
a5d16a4d | 7107 | |
3110ff80 | 7108 | dprintk("%s: begin!\n", __func__); |
a5d16a4d | 7109 | |
14516c3a TM |
7110 | if (!nfs4_sequence_done(task, &data->res.seq_res)) |
7111 | return; | |
66179efe | 7112 | |
a5d16a4d | 7113 | data->rpc_status = task->tk_status; |
425c1d4e TM |
7114 | switch (task->tk_status) { |
7115 | case 0: | |
2b0143b5 | 7116 | renew_lease(NFS_SERVER(d_inode(data->ctx->dentry)), |
39071e6f | 7117 | data->timestamp); |
a3cf9bca | 7118 | if (data->arg.new_lock && !data->cancelled) { |
c69899a1 | 7119 | data->fl.fl_flags &= ~(FL_SLEEP | FL_ACCESS); |
a3cf9bca | 7120 | if (locks_lock_inode_wait(lsp->ls_state->inode, &data->fl) < 0) |
6ea76bf5 | 7121 | goto out_restart; |
c69899a1 | 7122 | } |
39071e6f TM |
7123 | if (data->arg.new_lock_owner != 0) { |
7124 | nfs_confirm_seqid(&lsp->ls_seqid, 0); | |
7125 | nfs4_stateid_copy(&lsp->ls_stateid, &data->res.stateid); | |
7126 | set_bit(NFS_LOCK_INITIALIZED, &lsp->ls_flags); | |
6ea76bf5 TM |
7127 | } else if (!nfs4_update_lock_stateid(lsp, &data->res.stateid)) |
7128 | goto out_restart; | |
425c1d4e TM |
7129 | break; |
7130 | case -NFS4ERR_BAD_STATEID: | |
7131 | case -NFS4ERR_OLD_STATEID: | |
7132 | case -NFS4ERR_STALE_STATEID: | |
7133 | case -NFS4ERR_EXPIRED: | |
7134 | if (data->arg.new_lock_owner != 0) { | |
6ea76bf5 | 7135 | if (!nfs4_stateid_match(&data->arg.open_stateid, |
425c1d4e | 7136 | &lsp->ls_state->open_stateid)) |
6ea76bf5 TM |
7137 | goto out_restart; |
7138 | } else if (!nfs4_stateid_match(&data->arg.lock_stateid, | |
425c1d4e | 7139 | &lsp->ls_stateid)) |
6ea76bf5 | 7140 | goto out_restart; |
a5d16a4d | 7141 | } |
a3cf9bca | 7142 | out_done: |
3110ff80 | 7143 | dprintk("%s: done, ret = %d!\n", __func__, data->rpc_status); |
6ea76bf5 TM |
7144 | return; |
7145 | out_restart: | |
7146 | if (!data->cancelled) | |
7147 | rpc_restart_call_prepare(task); | |
7148 | goto out_done; | |
a5d16a4d TM |
7149 | } |
7150 | ||
7151 | static void nfs4_lock_release(void *calldata) | |
7152 | { | |
7153 | struct nfs4_lockdata *data = calldata; | |
7154 | ||
3110ff80 | 7155 | dprintk("%s: begin!\n", __func__); |
2f74c0a0 | 7156 | nfs_free_seqid(data->arg.open_seqid); |
6ea76bf5 | 7157 | if (data->cancelled && data->rpc_status == 0) { |
a5d16a4d TM |
7158 | struct rpc_task *task; |
7159 | task = nfs4_do_unlck(&data->fl, data->ctx, data->lsp, | |
7160 | data->arg.lock_seqid); | |
7161 | if (!IS_ERR(task)) | |
bf294b41 | 7162 | rpc_put_task_async(task); |
3110ff80 | 7163 | dprintk("%s: cancelling lock!\n", __func__); |
a5d16a4d TM |
7164 | } else |
7165 | nfs_free_seqid(data->arg.lock_seqid); | |
7166 | nfs4_put_lock_state(data->lsp); | |
7167 | put_nfs_open_context(data->ctx); | |
7168 | kfree(data); | |
3110ff80 | 7169 | dprintk("%s: done!\n", __func__); |
a5d16a4d TM |
7170 | } |
7171 | ||
7172 | static const struct rpc_call_ops nfs4_lock_ops = { | |
7173 | .rpc_call_prepare = nfs4_lock_prepare, | |
7174 | .rpc_call_done = nfs4_lock_done, | |
7175 | .rpc_release = nfs4_lock_release, | |
7176 | }; | |
7177 | ||
2bee72a6 TM |
7178 | static void nfs4_handle_setlk_error(struct nfs_server *server, struct nfs4_lock_state *lsp, int new_lock_owner, int error) |
7179 | { | |
2bee72a6 TM |
7180 | switch (error) { |
7181 | case -NFS4ERR_ADMIN_REVOKED: | |
d7f3e4bf | 7182 | case -NFS4ERR_EXPIRED: |
2bee72a6 | 7183 | case -NFS4ERR_BAD_STATEID: |
ecac799a | 7184 | lsp->ls_seqid.flags &= ~NFS_SEQID_CONFIRMED; |
2bee72a6 | 7185 | if (new_lock_owner != 0 || |
795a88c9 | 7186 | test_bit(NFS_LOCK_INITIALIZED, &lsp->ls_flags) != 0) |
ecac799a | 7187 | nfs4_schedule_stateid_recovery(server, lsp->ls_state); |
a2c0b9e2 TM |
7188 | break; |
7189 | case -NFS4ERR_STALE_STATEID: | |
a2c0b9e2 | 7190 | lsp->ls_seqid.flags &= ~NFS_SEQID_CONFIRMED; |
ecac799a | 7191 | nfs4_schedule_lease_recovery(server->nfs_client); |
8b98a532 | 7192 | } |
2bee72a6 TM |
7193 | } |
7194 | ||
afe6c27c | 7195 | static int _nfs4_do_setlk(struct nfs4_state *state, int cmd, struct file_lock *fl, int recovery_type) |
a5d16a4d TM |
7196 | { |
7197 | struct nfs4_lockdata *data; | |
7198 | struct rpc_task *task; | |
5138fde0 TM |
7199 | struct rpc_message msg = { |
7200 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOCK], | |
7201 | .rpc_cred = state->owner->so_cred, | |
7202 | }; | |
c970aa85 TM |
7203 | struct rpc_task_setup task_setup_data = { |
7204 | .rpc_client = NFS_CLIENT(state->inode), | |
5138fde0 | 7205 | .rpc_message = &msg, |
c970aa85 | 7206 | .callback_ops = &nfs4_lock_ops, |
101070ca | 7207 | .workqueue = nfsiod_workqueue, |
61296507 | 7208 | .flags = RPC_TASK_ASYNC | RPC_TASK_CRED_NOREF, |
c970aa85 | 7209 | }; |
a5d16a4d | 7210 | int ret; |
85e39fee OK |
7211 | struct nfs_client *client = NFS_SERVER(state->inode)->nfs_client; |
7212 | ||
7213 | if (client->cl_minorversion) | |
7214 | task_setup_data.flags |= RPC_TASK_MOVEABLE; | |
a5d16a4d | 7215 | |
3110ff80 | 7216 | dprintk("%s: begin!\n", __func__); |
cd3758e3 | 7217 | data = nfs4_alloc_lockdata(fl, nfs_file_open_context(fl->fl_file), |
8535b2be TM |
7218 | fl->fl_u.nfs4_fl.owner, |
7219 | recovery_type == NFS_LOCK_NEW ? GFP_KERNEL : GFP_NOFS); | |
a5d16a4d TM |
7220 | if (data == NULL) |
7221 | return -ENOMEM; | |
7222 | if (IS_SETLKW(cmd)) | |
7223 | data->arg.block = 1; | |
fba83f34 AS |
7224 | nfs4_init_sequence(&data->arg.seq_args, &data->res.seq_res, 1, |
7225 | recovery_type > NFS_LOCK_NEW); | |
1174dd1f TM |
7226 | msg.rpc_argp = &data->arg; |
7227 | msg.rpc_resp = &data->res; | |
c970aa85 | 7228 | task_setup_data.callback_data = data; |
8fe72bac TM |
7229 | if (recovery_type > NFS_LOCK_NEW) { |
7230 | if (recovery_type == NFS_LOCK_RECLAIM) | |
7231 | data->arg.reclaim = NFS_LOCK_RECLAIM; | |
c69899a1 TM |
7232 | } else |
7233 | data->arg.new_lock = 1; | |
c970aa85 | 7234 | task = rpc_run_task(&task_setup_data); |
7a1218a2 | 7235 | if (IS_ERR(task)) |
a5d16a4d | 7236 | return PTR_ERR(task); |
820bf85c | 7237 | ret = rpc_wait_for_completion_task(task); |
a5d16a4d TM |
7238 | if (ret == 0) { |
7239 | ret = data->rpc_status; | |
2bee72a6 TM |
7240 | if (ret) |
7241 | nfs4_handle_setlk_error(data->server, data->lsp, | |
7242 | data->arg.new_lock_owner, ret); | |
a5d16a4d | 7243 | } else |
a7a3b1e9 | 7244 | data->cancelled = true; |
3d1a90ab | 7245 | trace_nfs4_set_lock(fl, state, &data->res.stateid, cmd, ret); |
e6b3c4db | 7246 | rpc_put_task(task); |
3110ff80 | 7247 | dprintk("%s: done, ret = %d!\n", __func__, ret); |
a5d16a4d | 7248 | return ret; |
1da177e4 LT |
7249 | } |
7250 | ||
7251 | static int nfs4_lock_reclaim(struct nfs4_state *state, struct file_lock *request) | |
7252 | { | |
202b50dc | 7253 | struct nfs_server *server = NFS_SERVER(state->inode); |
05ffe24f TM |
7254 | struct nfs4_exception exception = { |
7255 | .inode = state->inode, | |
7256 | }; | |
202b50dc TM |
7257 | int err; |
7258 | ||
7259 | do { | |
42a2d13e TM |
7260 | /* Cache the lock if possible... */ |
7261 | if (test_bit(NFS_DELEGATED_STATE, &state->flags) != 0) | |
7262 | return 0; | |
afe6c27c | 7263 | err = _nfs4_do_setlk(state, F_SETLK, request, NFS_LOCK_RECLAIM); |
168667c4 | 7264 | if (err != -NFS4ERR_DELAY) |
202b50dc TM |
7265 | break; |
7266 | nfs4_handle_exception(server, err, &exception); | |
7267 | } while (exception.retry); | |
7268 | return err; | |
1da177e4 LT |
7269 | } |
7270 | ||
7271 | static int nfs4_lock_expired(struct nfs4_state *state, struct file_lock *request) | |
7272 | { | |
202b50dc | 7273 | struct nfs_server *server = NFS_SERVER(state->inode); |
05ffe24f TM |
7274 | struct nfs4_exception exception = { |
7275 | .inode = state->inode, | |
7276 | }; | |
202b50dc TM |
7277 | int err; |
7278 | ||
6bfc93ef TM |
7279 | err = nfs4_set_lock_state(state, request); |
7280 | if (err != 0) | |
7281 | return err; | |
f6de7a39 | 7282 | if (!recover_lost_locks) { |
ef1820f9 N |
7283 | set_bit(NFS_LOCK_LOST, &request->fl_u.nfs4_fl.owner->ls_flags); |
7284 | return 0; | |
7285 | } | |
202b50dc | 7286 | do { |
42a2d13e TM |
7287 | if (test_bit(NFS_DELEGATED_STATE, &state->flags) != 0) |
7288 | return 0; | |
afe6c27c | 7289 | err = _nfs4_do_setlk(state, F_SETLK, request, NFS_LOCK_EXPIRED); |
a9ed2e25 TM |
7290 | switch (err) { |
7291 | default: | |
7292 | goto out; | |
7293 | case -NFS4ERR_GRACE: | |
7294 | case -NFS4ERR_DELAY: | |
7295 | nfs4_handle_exception(server, err, &exception); | |
7296 | err = 0; | |
7297 | } | |
202b50dc | 7298 | } while (exception.retry); |
a9ed2e25 | 7299 | out: |
202b50dc | 7300 | return err; |
1da177e4 LT |
7301 | } |
7302 | ||
f062eb6c | 7303 | #if defined(CONFIG_NFS_V4_1) |
b01dd1d8 BS |
7304 | static int nfs41_lock_expired(struct nfs4_state *state, struct file_lock *request) |
7305 | { | |
c5896fc8 TM |
7306 | struct nfs4_lock_state *lsp; |
7307 | int status; | |
b01dd1d8 | 7308 | |
c5896fc8 TM |
7309 | status = nfs4_set_lock_state(state, request); |
7310 | if (status != 0) | |
7311 | return status; | |
7312 | lsp = request->fl_u.nfs4_fl.owner; | |
7313 | if (test_bit(NFS_LOCK_INITIALIZED, &lsp->ls_flags) || | |
7314 | test_bit(NFS_LOCK_LOST, &lsp->ls_flags)) | |
7315 | return 0; | |
81b68de4 | 7316 | return nfs4_lock_expired(state, request); |
f062eb6c BS |
7317 | } |
7318 | #endif | |
7319 | ||
1da177e4 LT |
7320 | static int _nfs4_proc_setlk(struct nfs4_state *state, int cmd, struct file_lock *request) |
7321 | { | |
19e03c57 | 7322 | struct nfs_inode *nfsi = NFS_I(state->inode); |
11476e9d | 7323 | struct nfs4_state_owner *sp = state->owner; |
01c3b861 | 7324 | unsigned char fl_flags = request->fl_flags; |
1ea67dbd | 7325 | int status; |
1da177e4 | 7326 | |
01c3b861 | 7327 | request->fl_flags |= FL_ACCESS; |
75575ddf | 7328 | status = locks_lock_inode_wait(state->inode, request); |
01c3b861 TM |
7329 | if (status < 0) |
7330 | goto out; | |
11476e9d | 7331 | mutex_lock(&sp->so_delegreturn_mutex); |
19e03c57 | 7332 | down_read(&nfsi->rwsem); |
01c3b861 | 7333 | if (test_bit(NFS_DELEGATED_STATE, &state->flags)) { |
01c3b861 | 7334 | /* Yes: cache locks! */ |
01c3b861 | 7335 | /* ...but avoid races with delegation recall... */ |
19e03c57 | 7336 | request->fl_flags = fl_flags & ~FL_SLEEP; |
75575ddf | 7337 | status = locks_lock_inode_wait(state->inode, request); |
c69899a1 | 7338 | up_read(&nfsi->rwsem); |
11476e9d | 7339 | mutex_unlock(&sp->so_delegreturn_mutex); |
9a99af49 | 7340 | goto out; |
9a99af49 | 7341 | } |
19e03c57 | 7342 | up_read(&nfsi->rwsem); |
11476e9d | 7343 | mutex_unlock(&sp->so_delegreturn_mutex); |
c69899a1 | 7344 | status = _nfs4_do_setlk(state, cmd, request, NFS_LOCK_NEW); |
01c3b861 TM |
7345 | out: |
7346 | request->fl_flags = fl_flags; | |
1da177e4 LT |
7347 | return status; |
7348 | } | |
7349 | ||
7350 | static int nfs4_proc_setlk(struct nfs4_state *state, int cmd, struct file_lock *request) | |
7351 | { | |
a1d0b5ee TM |
7352 | struct nfs4_exception exception = { |
7353 | .state = state, | |
05ffe24f | 7354 | .inode = state->inode, |
0688e64b | 7355 | .interruptible = true, |
a1d0b5ee | 7356 | }; |
1da177e4 LT |
7357 | int err; |
7358 | ||
7359 | do { | |
965b5d67 TM |
7360 | err = _nfs4_proc_setlk(state, cmd, request); |
7361 | if (err == -NFS4ERR_DENIED) | |
7362 | err = -EAGAIN; | |
1da177e4 | 7363 | err = nfs4_handle_exception(NFS_SERVER(state->inode), |
965b5d67 | 7364 | err, &exception); |
1da177e4 LT |
7365 | } while (exception.retry); |
7366 | return err; | |
7367 | } | |
7368 | ||
d2f3a7f9 JL |
7369 | #define NFS4_LOCK_MINTIMEOUT (1 * HZ) |
7370 | #define NFS4_LOCK_MAXTIMEOUT (30 * HZ) | |
7371 | ||
7372 | static int | |
a1d617d8 JL |
7373 | nfs4_retry_setlk_simple(struct nfs4_state *state, int cmd, |
7374 | struct file_lock *request) | |
d2f3a7f9 JL |
7375 | { |
7376 | int status = -ERESTARTSYS; | |
7377 | unsigned long timeout = NFS4_LOCK_MINTIMEOUT; | |
7378 | ||
7379 | while(!signalled()) { | |
7380 | status = nfs4_proc_setlk(state, cmd, request); | |
7381 | if ((status != -EAGAIN) || IS_SETLK(cmd)) | |
7382 | break; | |
7383 | freezable_schedule_timeout_interruptible(timeout); | |
7384 | timeout *= 2; | |
7385 | timeout = min_t(unsigned long, NFS4_LOCK_MAXTIMEOUT, timeout); | |
7386 | status = -ERESTARTSYS; | |
7387 | } | |
7388 | return status; | |
7389 | } | |
7390 | ||
a1d617d8 JL |
7391 | #ifdef CONFIG_NFS_V4_1 |
7392 | struct nfs4_lock_waiter { | |
a1d617d8 | 7393 | struct inode *inode; |
86438186 TM |
7394 | struct nfs_lowner owner; |
7395 | wait_queue_entry_t wait; | |
a1d617d8 JL |
7396 | }; |
7397 | ||
7398 | static int | |
ac6424b9 | 7399 | nfs4_wake_lock_waiter(wait_queue_entry_t *wait, unsigned int mode, int flags, void *key) |
a1d617d8 | 7400 | { |
86438186 TM |
7401 | struct nfs4_lock_waiter *waiter = |
7402 | container_of(wait, struct nfs4_lock_waiter, wait); | |
a1d617d8 | 7403 | |
57174593 JL |
7404 | /* NULL key means to wake up everyone */ |
7405 | if (key) { | |
7406 | struct cb_notify_lock_args *cbnl = key; | |
7407 | struct nfs_lowner *lowner = &cbnl->cbnl_owner, | |
86438186 | 7408 | *wowner = &waiter->owner; |
a1d617d8 | 7409 | |
57174593 JL |
7410 | /* Only wake if the callback was for the same owner. */ |
7411 | if (lowner->id != wowner->id || lowner->s_dev != wowner->s_dev) | |
7412 | return 0; | |
a1d617d8 | 7413 | |
57174593 JL |
7414 | /* Make sure it's for the right inode */ |
7415 | if (nfs_compare_fh(NFS_FH(waiter->inode), &cbnl->cbnl_fh)) | |
7416 | return 0; | |
57174593 | 7417 | } |
a1d617d8 | 7418 | |
86438186 | 7419 | return woken_wake_function(wait, mode, flags, key); |
a1d617d8 JL |
7420 | } |
7421 | ||
7422 | static int | |
7423 | nfs4_retry_setlk(struct nfs4_state *state, int cmd, struct file_lock *request) | |
7424 | { | |
a1d617d8 JL |
7425 | struct nfs4_lock_state *lsp = request->fl_u.nfs4_fl.owner; |
7426 | struct nfs_server *server = NFS_SERVER(state->inode); | |
7427 | struct nfs_client *clp = server->nfs_client; | |
7428 | wait_queue_head_t *q = &clp->cl_lock_waitq; | |
86438186 TM |
7429 | struct nfs4_lock_waiter waiter = { |
7430 | .inode = state->inode, | |
7431 | .owner = { .clientid = clp->cl_clientid, | |
7432 | .id = lsp->ls_seqid.owner_id, | |
7433 | .s_dev = server->s_dev }, | |
7434 | }; | |
7435 | int status; | |
a1d617d8 JL |
7436 | |
7437 | /* Don't bother with waitqueue if we don't expect a callback */ | |
7438 | if (!test_bit(NFS_STATE_MAY_NOTIFY_LOCK, &state->flags)) | |
7439 | return nfs4_retry_setlk_simple(state, cmd, request); | |
7440 | ||
86438186 TM |
7441 | init_wait(&waiter.wait); |
7442 | waiter.wait.func = nfs4_wake_lock_waiter; | |
7443 | add_wait_queue(q, &waiter.wait); | |
a1d617d8 | 7444 | |
86438186 | 7445 | do { |
a1d617d8 | 7446 | status = nfs4_proc_setlk(state, cmd, request); |
86438186 | 7447 | if (status != -EAGAIN || IS_SETLK(cmd)) |
a1d617d8 JL |
7448 | break; |
7449 | ||
7450 | status = -ERESTARTSYS; | |
52b042ab | 7451 | freezer_do_not_count(); |
86438186 TM |
7452 | wait_woken(&waiter.wait, TASK_INTERRUPTIBLE, |
7453 | NFS4_LOCK_MAXTIMEOUT); | |
52b042ab | 7454 | freezer_count(); |
86438186 TM |
7455 | } while (!signalled()); |
7456 | ||
7457 | remove_wait_queue(q, &waiter.wait); | |
a1d617d8 | 7458 | |
a1d617d8 JL |
7459 | return status; |
7460 | } | |
7461 | #else /* !CONFIG_NFS_V4_1 */ | |
7462 | static inline int | |
7463 | nfs4_retry_setlk(struct nfs4_state *state, int cmd, struct file_lock *request) | |
7464 | { | |
7465 | return nfs4_retry_setlk_simple(state, cmd, request); | |
7466 | } | |
7467 | #endif | |
7468 | ||
1da177e4 LT |
7469 | static int |
7470 | nfs4_proc_lock(struct file *filp, int cmd, struct file_lock *request) | |
7471 | { | |
7472 | struct nfs_open_context *ctx; | |
7473 | struct nfs4_state *state; | |
1da177e4 LT |
7474 | int status; |
7475 | ||
7476 | /* verify open state */ | |
cd3758e3 | 7477 | ctx = nfs_file_open_context(filp); |
1da177e4 LT |
7478 | state = ctx->state; |
7479 | ||
d953126a TM |
7480 | if (IS_GETLK(cmd)) { |
7481 | if (state != NULL) | |
7482 | return nfs4_proc_getlk(state, F_GETLK, request); | |
7483 | return 0; | |
7484 | } | |
1da177e4 LT |
7485 | |
7486 | if (!(IS_SETLK(cmd) || IS_SETLKW(cmd))) | |
7487 | return -EINVAL; | |
7488 | ||
d953126a TM |
7489 | if (request->fl_type == F_UNLCK) { |
7490 | if (state != NULL) | |
7491 | return nfs4_proc_unlck(state, cmd, request); | |
7492 | return 0; | |
7493 | } | |
1da177e4 | 7494 | |
d953126a TM |
7495 | if (state == NULL) |
7496 | return -ENOLCK; | |
1ea67dbd JL |
7497 | |
7498 | if ((request->fl_flags & FL_POSIX) && | |
7499 | !test_bit(NFS_STATE_POSIX_LOCKS, &state->flags)) | |
7500 | return -ENOLCK; | |
7501 | ||
fcfa4470 BC |
7502 | /* |
7503 | * Don't rely on the VFS having checked the file open mode, | |
7504 | * since it won't do this for flock() locks. | |
7505 | */ | |
7506 | switch (request->fl_type) { | |
7507 | case F_RDLCK: | |
7508 | if (!(filp->f_mode & FMODE_READ)) | |
7509 | return -EBADF; | |
7510 | break; | |
7511 | case F_WRLCK: | |
7512 | if (!(filp->f_mode & FMODE_WRITE)) | |
7513 | return -EBADF; | |
7514 | } | |
7515 | ||
1ea67dbd JL |
7516 | status = nfs4_set_lock_state(state, request); |
7517 | if (status != 0) | |
7518 | return status; | |
7519 | ||
d2f3a7f9 | 7520 | return nfs4_retry_setlk(state, cmd, request); |
1da177e4 LT |
7521 | } |
7522 | ||
e93a5e93 TM |
7523 | static int nfs4_delete_lease(struct file *file, void **priv) |
7524 | { | |
7525 | return generic_setlease(file, F_UNLCK, NULL, priv); | |
7526 | } | |
7527 | ||
7528 | static int nfs4_add_lease(struct file *file, long arg, struct file_lock **lease, | |
7529 | void **priv) | |
7530 | { | |
7531 | struct inode *inode = file_inode(file); | |
7532 | fmode_t type = arg == F_RDLCK ? FMODE_READ : FMODE_WRITE; | |
7533 | int ret; | |
7534 | ||
7535 | /* No delegation, no lease */ | |
7536 | if (!nfs4_have_delegation(inode, type)) | |
df2c7b95 | 7537 | return -EAGAIN; |
e93a5e93 TM |
7538 | ret = generic_setlease(file, arg, lease, priv); |
7539 | if (ret || nfs4_have_delegation(inode, type)) | |
7540 | return ret; | |
7541 | /* We raced with a delegation return */ | |
7542 | nfs4_delete_lease(file, priv); | |
df2c7b95 | 7543 | return -EAGAIN; |
e93a5e93 TM |
7544 | } |
7545 | ||
7546 | int nfs4_proc_setlease(struct file *file, long arg, struct file_lock **lease, | |
7547 | void **priv) | |
7548 | { | |
7549 | switch (arg) { | |
7550 | case F_RDLCK: | |
7551 | case F_WRLCK: | |
7552 | return nfs4_add_lease(file, arg, lease, priv); | |
7553 | case F_UNLCK: | |
7554 | return nfs4_delete_lease(file, priv); | |
7555 | default: | |
7556 | return -EINVAL; | |
7557 | } | |
7558 | } | |
7559 | ||
db4f2e63 | 7560 | int nfs4_lock_delegation_recall(struct file_lock *fl, struct nfs4_state *state, const nfs4_stateid *stateid) |
888e694c TM |
7561 | { |
7562 | struct nfs_server *server = NFS_SERVER(state->inode); | |
888e694c TM |
7563 | int err; |
7564 | ||
7565 | err = nfs4_set_lock_state(state, fl); | |
7566 | if (err != 0) | |
db4f2e63 | 7567 | return err; |
3d7a9520 OK |
7568 | do { |
7569 | err = _nfs4_do_setlk(state, F_SETLK, fl, NFS_LOCK_NEW); | |
7570 | if (err != -NFS4ERR_DELAY) | |
7571 | break; | |
7572 | ssleep(1); | |
7573 | } while (err == -NFS4ERR_DELAY); | |
dce2630c | 7574 | return nfs4_handle_delegation_recall_error(server, state, stateid, fl, err); |
888e694c | 7575 | } |
6b3b5496 | 7576 | |
cf470c3e TM |
7577 | struct nfs_release_lockowner_data { |
7578 | struct nfs4_lock_state *lsp; | |
5ae67c4f | 7579 | struct nfs_server *server; |
cf470c3e | 7580 | struct nfs_release_lockowner_args args; |
b7e63a10 | 7581 | struct nfs_release_lockowner_res res; |
60ea6812 | 7582 | unsigned long timestamp; |
cf470c3e TM |
7583 | }; |
7584 | ||
fbd4bfd1 CL |
7585 | static void nfs4_release_lockowner_prepare(struct rpc_task *task, void *calldata) |
7586 | { | |
7587 | struct nfs_release_lockowner_data *data = calldata; | |
5b53dc88 | 7588 | struct nfs_server *server = data->server; |
7981c8a6 AS |
7589 | nfs4_setup_sequence(server->nfs_client, &data->args.seq_args, |
7590 | &data->res.seq_res, task); | |
5b53dc88 | 7591 | data->args.lock_owner.clientid = server->nfs_client->cl_clientid; |
60ea6812 | 7592 | data->timestamp = jiffies; |
fbd4bfd1 CL |
7593 | } |
7594 | ||
7595 | static void nfs4_release_lockowner_done(struct rpc_task *task, void *calldata) | |
7596 | { | |
7597 | struct nfs_release_lockowner_data *data = calldata; | |
60ea6812 CL |
7598 | struct nfs_server *server = data->server; |
7599 | ||
b7e63a10 | 7600 | nfs40_sequence_done(task, &data->res.seq_res); |
60ea6812 CL |
7601 | |
7602 | switch (task->tk_status) { | |
7603 | case 0: | |
7604 | renew_lease(server, data->timestamp); | |
7605 | break; | |
7606 | case -NFS4ERR_STALE_CLIENTID: | |
7607 | case -NFS4ERR_EXPIRED: | |
5b53dc88 KM |
7608 | nfs4_schedule_lease_recovery(server->nfs_client); |
7609 | break; | |
60ea6812 CL |
7610 | case -NFS4ERR_LEASE_MOVED: |
7611 | case -NFS4ERR_DELAY: | |
8478eaa1 N |
7612 | if (nfs4_async_handle_error(task, server, |
7613 | NULL, NULL) == -EAGAIN) | |
60ea6812 CL |
7614 | rpc_restart_call_prepare(task); |
7615 | } | |
fbd4bfd1 CL |
7616 | } |
7617 | ||
d3c7b7cc TM |
7618 | static void nfs4_release_lockowner_release(void *calldata) |
7619 | { | |
cf470c3e | 7620 | struct nfs_release_lockowner_data *data = calldata; |
5ae67c4f | 7621 | nfs4_free_lock_state(data->server, data->lsp); |
d3c7b7cc TM |
7622 | kfree(calldata); |
7623 | } | |
7624 | ||
17280175 | 7625 | static const struct rpc_call_ops nfs4_release_lockowner_ops = { |
fbd4bfd1 CL |
7626 | .rpc_call_prepare = nfs4_release_lockowner_prepare, |
7627 | .rpc_call_done = nfs4_release_lockowner_done, | |
d3c7b7cc TM |
7628 | .rpc_release = nfs4_release_lockowner_release, |
7629 | }; | |
7630 | ||
f1cdae87 JL |
7631 | static void |
7632 | nfs4_release_lockowner(struct nfs_server *server, struct nfs4_lock_state *lsp) | |
d3c7b7cc | 7633 | { |
cf470c3e | 7634 | struct nfs_release_lockowner_data *data; |
d3c7b7cc TM |
7635 | struct rpc_message msg = { |
7636 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RELEASE_LOCKOWNER], | |
7637 | }; | |
7638 | ||
7639 | if (server->nfs_client->cl_mvops->minor_version != 0) | |
f1cdae87 | 7640 | return; |
fbd4bfd1 | 7641 | |
cf470c3e TM |
7642 | data = kmalloc(sizeof(*data), GFP_NOFS); |
7643 | if (!data) | |
f1cdae87 | 7644 | return; |
cf470c3e | 7645 | data->lsp = lsp; |
5ae67c4f | 7646 | data->server = server; |
cf470c3e TM |
7647 | data->args.lock_owner.clientid = server->nfs_client->cl_clientid; |
7648 | data->args.lock_owner.id = lsp->ls_seqid.owner_id; | |
7649 | data->args.lock_owner.s_dev = server->s_dev; | |
fbd4bfd1 | 7650 | |
cf470c3e | 7651 | msg.rpc_argp = &data->args; |
b7e63a10 | 7652 | msg.rpc_resp = &data->res; |
fba83f34 | 7653 | nfs4_init_sequence(&data->args.seq_args, &data->res.seq_res, 0, 0); |
cf470c3e | 7654 | rpc_call_async(server->client, &msg, 0, &nfs4_release_lockowner_ops, data); |
d3c7b7cc TM |
7655 | } |
7656 | ||
aa1870af BF |
7657 | #define XATTR_NAME_NFSV4_ACL "system.nfs4_acl" |
7658 | ||
d9a82a04 | 7659 | static int nfs4_xattr_set_nfs4_acl(const struct xattr_handler *handler, |
e65ce2a5 | 7660 | struct user_namespace *mnt_userns, |
59301226 AV |
7661 | struct dentry *unused, struct inode *inode, |
7662 | const char *key, const void *buf, | |
7663 | size_t buflen, int flags) | |
6b3b5496 | 7664 | { |
59301226 | 7665 | return nfs4_proc_set_acl(inode, buf, buflen); |
6b3b5496 BF |
7666 | } |
7667 | ||
d9a82a04 | 7668 | static int nfs4_xattr_get_nfs4_acl(const struct xattr_handler *handler, |
b296821a AV |
7669 | struct dentry *unused, struct inode *inode, |
7670 | const char *key, void *buf, size_t buflen) | |
6b3b5496 | 7671 | { |
b296821a | 7672 | return nfs4_proc_get_acl(inode, buf, buflen); |
6b3b5496 BF |
7673 | } |
7674 | ||
764a5c6b | 7675 | static bool nfs4_xattr_list_nfs4_acl(struct dentry *dentry) |
6b3b5496 | 7676 | { |
764a5c6b | 7677 | return nfs4_server_supports_acls(NFS_SERVER(d_inode(dentry))); |
6b3b5496 BF |
7678 | } |
7679 | ||
c9bccef6 | 7680 | #ifdef CONFIG_NFS_V4_SECURITY_LABEL |
c9bccef6 | 7681 | |
d9a82a04 | 7682 | static int nfs4_xattr_set_nfs4_label(const struct xattr_handler *handler, |
e65ce2a5 | 7683 | struct user_namespace *mnt_userns, |
59301226 AV |
7684 | struct dentry *unused, struct inode *inode, |
7685 | const char *key, const void *buf, | |
7686 | size_t buflen, int flags) | |
c9bccef6 DQ |
7687 | { |
7688 | if (security_ismaclabel(key)) | |
59301226 | 7689 | return nfs4_set_security_label(inode, buf, buflen); |
c9bccef6 DQ |
7690 | |
7691 | return -EOPNOTSUPP; | |
7692 | } | |
7693 | ||
d9a82a04 | 7694 | static int nfs4_xattr_get_nfs4_label(const struct xattr_handler *handler, |
b296821a AV |
7695 | struct dentry *unused, struct inode *inode, |
7696 | const char *key, void *buf, size_t buflen) | |
c9bccef6 DQ |
7697 | { |
7698 | if (security_ismaclabel(key)) | |
b296821a | 7699 | return nfs4_get_security_label(inode, buf, buflen); |
c9bccef6 DQ |
7700 | return -EOPNOTSUPP; |
7701 | } | |
7702 | ||
c4803c49 AG |
7703 | static ssize_t |
7704 | nfs4_listxattr_nfs4_label(struct inode *inode, char *list, size_t list_len) | |
c9bccef6 | 7705 | { |
c4803c49 | 7706 | int len = 0; |
c9bccef6 | 7707 | |
c4803c49 AG |
7708 | if (nfs_server_capable(inode, NFS_CAP_SECURITY_LABEL)) { |
7709 | len = security_inode_listsecurity(inode, list, list_len); | |
82c596eb | 7710 | if (len >= 0 && list_len && len > list_len) |
c4803c49 | 7711 | return -ERANGE; |
c9bccef6 DQ |
7712 | } |
7713 | return len; | |
7714 | } | |
7715 | ||
7716 | static const struct xattr_handler nfs4_xattr_nfs4_label_handler = { | |
7717 | .prefix = XATTR_SECURITY_PREFIX, | |
c9bccef6 DQ |
7718 | .get = nfs4_xattr_get_nfs4_label, |
7719 | .set = nfs4_xattr_set_nfs4_label, | |
7720 | }; | |
c9bccef6 | 7721 | |
c4803c49 AG |
7722 | #else |
7723 | ||
7724 | static ssize_t | |
7725 | nfs4_listxattr_nfs4_label(struct inode *inode, char *list, size_t list_len) | |
7726 | { | |
7727 | return 0; | |
7728 | } | |
7729 | ||
7730 | #endif | |
c9bccef6 | 7731 | |
012a211a FL |
7732 | #ifdef CONFIG_NFS_V4_2 |
7733 | static int nfs4_xattr_set_nfs4_user(const struct xattr_handler *handler, | |
e65ce2a5 | 7734 | struct user_namespace *mnt_userns, |
012a211a FL |
7735 | struct dentry *unused, struct inode *inode, |
7736 | const char *key, const void *buf, | |
7737 | size_t buflen, int flags) | |
7738 | { | |
0ddcf42b | 7739 | u32 mask; |
95ad37f9 | 7740 | int ret; |
012a211a FL |
7741 | |
7742 | if (!nfs_server_capable(inode, NFS_CAP_XATTR)) | |
7743 | return -EOPNOTSUPP; | |
7744 | ||
7745 | /* | |
7746 | * There is no mapping from the MAY_* flags to the NFS_ACCESS_XA* | |
7747 | * flags right now. Handling of xattr operations use the normal | |
7748 | * file read/write permissions. | |
7749 | * | |
7750 | * Just in case the server has other ideas (which RFC 8276 allows), | |
7751 | * do a cached access check for the XA* flags to possibly avoid | |
7752 | * doing an RPC and getting EACCES back. | |
7753 | */ | |
0ddcf42b N |
7754 | if (!nfs_access_get_cached(inode, current_cred(), &mask, true)) { |
7755 | if (!(mask & NFS_ACCESS_XAWRITE)) | |
012a211a FL |
7756 | return -EACCES; |
7757 | } | |
7758 | ||
95ad37f9 FL |
7759 | if (buf == NULL) { |
7760 | ret = nfs42_proc_removexattr(inode, key); | |
7761 | if (!ret) | |
7762 | nfs4_xattr_cache_remove(inode, key); | |
7763 | } else { | |
7764 | ret = nfs42_proc_setxattr(inode, key, buf, buflen, flags); | |
7765 | if (!ret) | |
7766 | nfs4_xattr_cache_add(inode, key, buf, NULL, buflen); | |
7767 | } | |
7768 | ||
7769 | return ret; | |
012a211a FL |
7770 | } |
7771 | ||
7772 | static int nfs4_xattr_get_nfs4_user(const struct xattr_handler *handler, | |
7773 | struct dentry *unused, struct inode *inode, | |
7774 | const char *key, void *buf, size_t buflen) | |
7775 | { | |
0ddcf42b | 7776 | u32 mask; |
95ad37f9 | 7777 | ssize_t ret; |
012a211a FL |
7778 | |
7779 | if (!nfs_server_capable(inode, NFS_CAP_XATTR)) | |
7780 | return -EOPNOTSUPP; | |
7781 | ||
0ddcf42b N |
7782 | if (!nfs_access_get_cached(inode, current_cred(), &mask, true)) { |
7783 | if (!(mask & NFS_ACCESS_XAREAD)) | |
012a211a FL |
7784 | return -EACCES; |
7785 | } | |
7786 | ||
1f3208b2 | 7787 | ret = nfs_revalidate_inode(inode, NFS_INO_INVALID_CHANGE); |
95ad37f9 FL |
7788 | if (ret) |
7789 | return ret; | |
7790 | ||
7791 | ret = nfs4_xattr_cache_get(inode, key, buf, buflen); | |
7792 | if (ret >= 0 || (ret < 0 && ret != -ENOENT)) | |
7793 | return ret; | |
7794 | ||
7795 | ret = nfs42_proc_getxattr(inode, key, buf, buflen); | |
7796 | ||
7797 | return ret; | |
012a211a FL |
7798 | } |
7799 | ||
7800 | static ssize_t | |
7801 | nfs4_listxattr_nfs4_user(struct inode *inode, char *list, size_t list_len) | |
7802 | { | |
7803 | u64 cookie; | |
7804 | bool eof; | |
95ad37f9 | 7805 | ssize_t ret, size; |
012a211a FL |
7806 | char *buf; |
7807 | size_t buflen; | |
0ddcf42b | 7808 | u32 mask; |
012a211a FL |
7809 | |
7810 | if (!nfs_server_capable(inode, NFS_CAP_XATTR)) | |
7811 | return 0; | |
7812 | ||
0ddcf42b N |
7813 | if (!nfs_access_get_cached(inode, current_cred(), &mask, true)) { |
7814 | if (!(mask & NFS_ACCESS_XALIST)) | |
012a211a FL |
7815 | return 0; |
7816 | } | |
7817 | ||
1f3208b2 | 7818 | ret = nfs_revalidate_inode(inode, NFS_INO_INVALID_CHANGE); |
95ad37f9 FL |
7819 | if (ret) |
7820 | return ret; | |
7821 | ||
7822 | ret = nfs4_xattr_cache_list(inode, list, list_len); | |
7823 | if (ret >= 0 || (ret < 0 && ret != -ENOENT)) | |
7824 | return ret; | |
7825 | ||
012a211a FL |
7826 | cookie = 0; |
7827 | eof = false; | |
7828 | buflen = list_len ? list_len : XATTR_LIST_MAX; | |
7829 | buf = list_len ? list : NULL; | |
7830 | size = 0; | |
7831 | ||
7832 | while (!eof) { | |
7833 | ret = nfs42_proc_listxattrs(inode, buf, buflen, | |
7834 | &cookie, &eof); | |
7835 | if (ret < 0) | |
7836 | return ret; | |
7837 | ||
7838 | if (list_len) { | |
7839 | buf += ret; | |
7840 | buflen -= ret; | |
7841 | } | |
7842 | size += ret; | |
7843 | } | |
7844 | ||
95ad37f9 FL |
7845 | if (list_len) |
7846 | nfs4_xattr_cache_set_list(inode, list, size); | |
7847 | ||
012a211a FL |
7848 | return size; |
7849 | } | |
7850 | ||
7851 | #else | |
7852 | ||
7853 | static ssize_t | |
7854 | nfs4_listxattr_nfs4_user(struct inode *inode, char *list, size_t list_len) | |
7855 | { | |
7856 | return 0; | |
7857 | } | |
7858 | #endif /* CONFIG_NFS_V4_2 */ | |
7859 | ||
533eb461 AA |
7860 | /* |
7861 | * nfs_fhget will use either the mounted_on_fileid or the fileid | |
7862 | */ | |
69aaaae1 TM |
7863 | static void nfs_fixup_referral_attributes(struct nfs_fattr *fattr) |
7864 | { | |
533eb461 AA |
7865 | if (!(((fattr->valid & NFS_ATTR_FATTR_MOUNTED_ON_FILEID) || |
7866 | (fattr->valid & NFS_ATTR_FATTR_FILEID)) && | |
7867 | (fattr->valid & NFS_ATTR_FATTR_FSID) && | |
81934ddb | 7868 | (fattr->valid & NFS_ATTR_FATTR_V4_LOCATIONS))) |
69aaaae1 TM |
7869 | return; |
7870 | ||
7871 | fattr->valid |= NFS_ATTR_FATTR_TYPE | NFS_ATTR_FATTR_MODE | | |
81934ddb | 7872 | NFS_ATTR_FATTR_NLINK | NFS_ATTR_FATTR_V4_REFERRAL; |
69aaaae1 TM |
7873 | fattr->mode = S_IFDIR | S_IRUGO | S_IXUGO; |
7874 | fattr->nlink = 2; | |
7875 | } | |
7876 | ||
f05d147f BS |
7877 | static int _nfs4_proc_fs_locations(struct rpc_clnt *client, struct inode *dir, |
7878 | const struct qstr *name, | |
7879 | struct nfs4_fs_locations *fs_locations, | |
7880 | struct page *page) | |
683b57b4 TM |
7881 | { |
7882 | struct nfs_server *server = NFS_SERVER(dir); | |
c05cefcc | 7883 | u32 bitmask[3]; |
683b57b4 TM |
7884 | struct nfs4_fs_locations_arg args = { |
7885 | .dir_fh = NFS_FH(dir), | |
c228fd3a | 7886 | .name = name, |
683b57b4 TM |
7887 | .page = page, |
7888 | .bitmask = bitmask, | |
7889 | }; | |
22958463 BH |
7890 | struct nfs4_fs_locations_res res = { |
7891 | .fs_locations = fs_locations, | |
7892 | }; | |
683b57b4 TM |
7893 | struct rpc_message msg = { |
7894 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_FS_LOCATIONS], | |
7895 | .rpc_argp = &args, | |
22958463 | 7896 | .rpc_resp = &res, |
683b57b4 TM |
7897 | }; |
7898 | int status; | |
7899 | ||
3110ff80 | 7900 | dprintk("%s: start\n", __func__); |
533eb461 | 7901 | |
c05cefcc CL |
7902 | bitmask[0] = nfs4_fattr_bitmap[0] | FATTR4_WORD0_FS_LOCATIONS; |
7903 | bitmask[1] = nfs4_fattr_bitmap[1]; | |
7904 | ||
533eb461 AA |
7905 | /* Ask for the fileid of the absent filesystem if mounted_on_fileid |
7906 | * is not supported */ | |
7907 | if (NFS_SERVER(dir)->attr_bitmask[1] & FATTR4_WORD1_MOUNTED_ON_FILEID) | |
c05cefcc | 7908 | bitmask[0] &= ~FATTR4_WORD0_FILEID; |
533eb461 | 7909 | else |
c05cefcc | 7910 | bitmask[1] &= ~FATTR4_WORD1_MOUNTED_ON_FILEID; |
533eb461 | 7911 | |
c228fd3a | 7912 | nfs_fattr_init(&fs_locations->fattr); |
683b57b4 | 7913 | fs_locations->server = server; |
830b8e33 | 7914 | fs_locations->nlocations = 0; |
f05d147f | 7915 | status = nfs4_call_sync(client, server, &msg, &args.seq_args, &res.seq_res, 0); |
3110ff80 | 7916 | dprintk("%s: returned status = %d\n", __func__, status); |
683b57b4 TM |
7917 | return status; |
7918 | } | |
7919 | ||
f05d147f BS |
7920 | int nfs4_proc_fs_locations(struct rpc_clnt *client, struct inode *dir, |
7921 | const struct qstr *name, | |
7922 | struct nfs4_fs_locations *fs_locations, | |
7923 | struct page *page) | |
db0a9593 | 7924 | { |
0688e64b TM |
7925 | struct nfs4_exception exception = { |
7926 | .interruptible = true, | |
7927 | }; | |
db0a9593 BS |
7928 | int err; |
7929 | do { | |
078ea3df TM |
7930 | err = _nfs4_proc_fs_locations(client, dir, name, |
7931 | fs_locations, page); | |
7932 | trace_nfs4_get_fs_locations(dir, name, err); | |
7933 | err = nfs4_handle_exception(NFS_SERVER(dir), err, | |
db0a9593 BS |
7934 | &exception); |
7935 | } while (exception.retry); | |
7936 | return err; | |
7937 | } | |
7938 | ||
b03d735b CL |
7939 | /* |
7940 | * This operation also signals the server that this client is | |
7941 | * performing migration recovery. The server can stop returning | |
7942 | * NFS4ERR_LEASE_MOVED to this client. A RENEW operation is | |
7943 | * appended to this compound to identify the client ID which is | |
7944 | * performing recovery. | |
7945 | */ | |
bdab4fd5 OK |
7946 | static int _nfs40_proc_get_locations(struct nfs_server *server, |
7947 | struct nfs_fh *fhandle, | |
b03d735b | 7948 | struct nfs4_fs_locations *locations, |
a52458b4 | 7949 | struct page *page, const struct cred *cred) |
b03d735b | 7950 | { |
b03d735b CL |
7951 | struct rpc_clnt *clnt = server->client; |
7952 | u32 bitmask[2] = { | |
7953 | [0] = FATTR4_WORD0_FSID | FATTR4_WORD0_FS_LOCATIONS, | |
7954 | }; | |
7955 | struct nfs4_fs_locations_arg args = { | |
7956 | .clientid = server->nfs_client->cl_clientid, | |
bdab4fd5 | 7957 | .fh = fhandle, |
b03d735b CL |
7958 | .page = page, |
7959 | .bitmask = bitmask, | |
7960 | .migration = 1, /* skip LOOKUP */ | |
7961 | .renew = 1, /* append RENEW */ | |
7962 | }; | |
7963 | struct nfs4_fs_locations_res res = { | |
7964 | .fs_locations = locations, | |
7965 | .migration = 1, | |
7966 | .renew = 1, | |
7967 | }; | |
7968 | struct rpc_message msg = { | |
7969 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_FS_LOCATIONS], | |
7970 | .rpc_argp = &args, | |
7971 | .rpc_resp = &res, | |
7972 | .rpc_cred = cred, | |
7973 | }; | |
7974 | unsigned long now = jiffies; | |
7975 | int status; | |
7976 | ||
7977 | nfs_fattr_init(&locations->fattr); | |
7978 | locations->server = server; | |
7979 | locations->nlocations = 0; | |
7980 | ||
fba83f34 | 7981 | nfs4_init_sequence(&args.seq_args, &res.seq_res, 0, 1); |
b03d735b CL |
7982 | status = nfs4_call_sync_sequence(clnt, server, &msg, |
7983 | &args.seq_args, &res.seq_res); | |
7984 | if (status) | |
7985 | return status; | |
7986 | ||
7987 | renew_lease(server, now); | |
7988 | return 0; | |
7989 | } | |
7990 | ||
7991 | #ifdef CONFIG_NFS_V4_1 | |
7992 | ||
7993 | /* | |
7994 | * This operation also signals the server that this client is | |
7995 | * performing migration recovery. The server can stop asserting | |
7996 | * SEQ4_STATUS_LEASE_MOVED for this client. The client ID | |
7997 | * performing this operation is identified in the SEQUENCE | |
7998 | * operation in this compound. | |
7999 | * | |
8000 | * When the client supports GETATTR(fs_locations_info), it can | |
8001 | * be plumbed in here. | |
8002 | */ | |
bdab4fd5 OK |
8003 | static int _nfs41_proc_get_locations(struct nfs_server *server, |
8004 | struct nfs_fh *fhandle, | |
b03d735b | 8005 | struct nfs4_fs_locations *locations, |
a52458b4 | 8006 | struct page *page, const struct cred *cred) |
b03d735b | 8007 | { |
b03d735b CL |
8008 | struct rpc_clnt *clnt = server->client; |
8009 | u32 bitmask[2] = { | |
8010 | [0] = FATTR4_WORD0_FSID | FATTR4_WORD0_FS_LOCATIONS, | |
8011 | }; | |
8012 | struct nfs4_fs_locations_arg args = { | |
bdab4fd5 | 8013 | .fh = fhandle, |
b03d735b CL |
8014 | .page = page, |
8015 | .bitmask = bitmask, | |
8016 | .migration = 1, /* skip LOOKUP */ | |
8017 | }; | |
8018 | struct nfs4_fs_locations_res res = { | |
8019 | .fs_locations = locations, | |
8020 | .migration = 1, | |
8021 | }; | |
8022 | struct rpc_message msg = { | |
8023 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_FS_LOCATIONS], | |
8024 | .rpc_argp = &args, | |
8025 | .rpc_resp = &res, | |
8026 | .rpc_cred = cred, | |
8027 | }; | |
8028 | int status; | |
8029 | ||
8030 | nfs_fattr_init(&locations->fattr); | |
8031 | locations->server = server; | |
8032 | locations->nlocations = 0; | |
8033 | ||
fba83f34 | 8034 | nfs4_init_sequence(&args.seq_args, &res.seq_res, 0, 1); |
b03d735b CL |
8035 | status = nfs4_call_sync_sequence(clnt, server, &msg, |
8036 | &args.seq_args, &res.seq_res); | |
8037 | if (status == NFS4_OK && | |
8038 | res.seq_res.sr_status_flags & SEQ4_STATUS_LEASE_MOVED) | |
8039 | status = -NFS4ERR_LEASE_MOVED; | |
8040 | return status; | |
8041 | } | |
8042 | ||
8043 | #endif /* CONFIG_NFS_V4_1 */ | |
8044 | ||
8045 | /** | |
8046 | * nfs4_proc_get_locations - discover locations for a migrated FSID | |
8047 | * @inode: inode on FSID that is migrating | |
8048 | * @locations: result of query | |
8049 | * @page: buffer | |
8050 | * @cred: credential to use for this operation | |
8051 | * | |
8052 | * Returns NFS4_OK on success, a negative NFS4ERR status code if the | |
8053 | * operation failed, or a negative errno if a local error occurred. | |
8054 | * | |
8055 | * On success, "locations" is filled in, but if the server has | |
8056 | * no locations information, NFS_ATTR_FATTR_V4_LOCATIONS is not | |
8057 | * asserted. | |
8058 | * | |
8059 | * -NFS4ERR_LEASE_MOVED is returned if the server still has leases | |
8060 | * from this client that require migration recovery. | |
8061 | */ | |
bdab4fd5 OK |
8062 | int nfs4_proc_get_locations(struct nfs_server *server, |
8063 | struct nfs_fh *fhandle, | |
b03d735b | 8064 | struct nfs4_fs_locations *locations, |
a52458b4 | 8065 | struct page *page, const struct cred *cred) |
b03d735b | 8066 | { |
b03d735b CL |
8067 | struct nfs_client *clp = server->nfs_client; |
8068 | const struct nfs4_mig_recovery_ops *ops = | |
8069 | clp->cl_mvops->mig_recovery_ops; | |
0688e64b TM |
8070 | struct nfs4_exception exception = { |
8071 | .interruptible = true, | |
8072 | }; | |
b03d735b CL |
8073 | int status; |
8074 | ||
8075 | dprintk("%s: FSID %llx:%llx on \"%s\"\n", __func__, | |
8076 | (unsigned long long)server->fsid.major, | |
8077 | (unsigned long long)server->fsid.minor, | |
8078 | clp->cl_hostname); | |
bdab4fd5 | 8079 | nfs_display_fhandle(fhandle, __func__); |
b03d735b CL |
8080 | |
8081 | do { | |
bdab4fd5 OK |
8082 | status = ops->get_locations(server, fhandle, locations, page, |
8083 | cred); | |
b03d735b CL |
8084 | if (status != -NFS4ERR_DELAY) |
8085 | break; | |
8086 | nfs4_handle_exception(server, status, &exception); | |
8087 | } while (exception.retry); | |
8088 | return status; | |
8089 | } | |
8090 | ||
44c99933 CL |
8091 | /* |
8092 | * This operation also signals the server that this client is | |
8093 | * performing "lease moved" recovery. The server can stop | |
8094 | * returning NFS4ERR_LEASE_MOVED to this client. A RENEW operation | |
8095 | * is appended to this compound to identify the client ID which is | |
8096 | * performing recovery. | |
8097 | */ | |
a52458b4 | 8098 | static int _nfs40_proc_fsid_present(struct inode *inode, const struct cred *cred) |
44c99933 CL |
8099 | { |
8100 | struct nfs_server *server = NFS_SERVER(inode); | |
8101 | struct nfs_client *clp = NFS_SERVER(inode)->nfs_client; | |
8102 | struct rpc_clnt *clnt = server->client; | |
8103 | struct nfs4_fsid_present_arg args = { | |
8104 | .fh = NFS_FH(inode), | |
8105 | .clientid = clp->cl_clientid, | |
8106 | .renew = 1, /* append RENEW */ | |
8107 | }; | |
8108 | struct nfs4_fsid_present_res res = { | |
8109 | .renew = 1, | |
8110 | }; | |
8111 | struct rpc_message msg = { | |
8112 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_FSID_PRESENT], | |
8113 | .rpc_argp = &args, | |
8114 | .rpc_resp = &res, | |
8115 | .rpc_cred = cred, | |
8116 | }; | |
8117 | unsigned long now = jiffies; | |
8118 | int status; | |
8119 | ||
8120 | res.fh = nfs_alloc_fhandle(); | |
8121 | if (res.fh == NULL) | |
8122 | return -ENOMEM; | |
8123 | ||
fba83f34 | 8124 | nfs4_init_sequence(&args.seq_args, &res.seq_res, 0, 1); |
44c99933 CL |
8125 | status = nfs4_call_sync_sequence(clnt, server, &msg, |
8126 | &args.seq_args, &res.seq_res); | |
8127 | nfs_free_fhandle(res.fh); | |
8128 | if (status) | |
8129 | return status; | |
8130 | ||
8131 | do_renew_lease(clp, now); | |
8132 | return 0; | |
8133 | } | |
8134 | ||
8135 | #ifdef CONFIG_NFS_V4_1 | |
8136 | ||
8137 | /* | |
8138 | * This operation also signals the server that this client is | |
8139 | * performing "lease moved" recovery. The server can stop asserting | |
8140 | * SEQ4_STATUS_LEASE_MOVED for this client. The client ID performing | |
8141 | * this operation is identified in the SEQUENCE operation in this | |
8142 | * compound. | |
8143 | */ | |
a52458b4 | 8144 | static int _nfs41_proc_fsid_present(struct inode *inode, const struct cred *cred) |
44c99933 CL |
8145 | { |
8146 | struct nfs_server *server = NFS_SERVER(inode); | |
8147 | struct rpc_clnt *clnt = server->client; | |
8148 | struct nfs4_fsid_present_arg args = { | |
8149 | .fh = NFS_FH(inode), | |
8150 | }; | |
8151 | struct nfs4_fsid_present_res res = { | |
8152 | }; | |
8153 | struct rpc_message msg = { | |
8154 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_FSID_PRESENT], | |
8155 | .rpc_argp = &args, | |
8156 | .rpc_resp = &res, | |
8157 | .rpc_cred = cred, | |
8158 | }; | |
8159 | int status; | |
8160 | ||
8161 | res.fh = nfs_alloc_fhandle(); | |
8162 | if (res.fh == NULL) | |
8163 | return -ENOMEM; | |
8164 | ||
fba83f34 | 8165 | nfs4_init_sequence(&args.seq_args, &res.seq_res, 0, 1); |
44c99933 CL |
8166 | status = nfs4_call_sync_sequence(clnt, server, &msg, |
8167 | &args.seq_args, &res.seq_res); | |
8168 | nfs_free_fhandle(res.fh); | |
8169 | if (status == NFS4_OK && | |
8170 | res.seq_res.sr_status_flags & SEQ4_STATUS_LEASE_MOVED) | |
8171 | status = -NFS4ERR_LEASE_MOVED; | |
8172 | return status; | |
8173 | } | |
8174 | ||
8175 | #endif /* CONFIG_NFS_V4_1 */ | |
8176 | ||
8177 | /** | |
8178 | * nfs4_proc_fsid_present - Is this FSID present or absent on server? | |
8179 | * @inode: inode on FSID to check | |
8180 | * @cred: credential to use for this operation | |
8181 | * | |
8182 | * Server indicates whether the FSID is present, moved, or not | |
8183 | * recognized. This operation is necessary to clear a LEASE_MOVED | |
8184 | * condition for this client ID. | |
8185 | * | |
8186 | * Returns NFS4_OK if the FSID is present on this server, | |
8187 | * -NFS4ERR_MOVED if the FSID is no longer present, a negative | |
8188 | * NFS4ERR code if some error occurred on the server, or a | |
8189 | * negative errno if a local failure occurred. | |
8190 | */ | |
a52458b4 | 8191 | int nfs4_proc_fsid_present(struct inode *inode, const struct cred *cred) |
44c99933 CL |
8192 | { |
8193 | struct nfs_server *server = NFS_SERVER(inode); | |
8194 | struct nfs_client *clp = server->nfs_client; | |
8195 | const struct nfs4_mig_recovery_ops *ops = | |
8196 | clp->cl_mvops->mig_recovery_ops; | |
0688e64b TM |
8197 | struct nfs4_exception exception = { |
8198 | .interruptible = true, | |
8199 | }; | |
44c99933 CL |
8200 | int status; |
8201 | ||
8202 | dprintk("%s: FSID %llx:%llx on \"%s\"\n", __func__, | |
8203 | (unsigned long long)server->fsid.major, | |
8204 | (unsigned long long)server->fsid.minor, | |
8205 | clp->cl_hostname); | |
8206 | nfs_display_fhandle(NFS_FH(inode), __func__); | |
8207 | ||
8208 | do { | |
8209 | status = ops->fsid_present(inode, cred); | |
8210 | if (status != -NFS4ERR_DELAY) | |
8211 | break; | |
8212 | nfs4_handle_exception(server, status, &exception); | |
8213 | } while (exception.retry); | |
8214 | return status; | |
8215 | } | |
8216 | ||
302fad7b | 8217 | /* |
a5250def WAA |
8218 | * If 'use_integrity' is true and the state managment nfs_client |
8219 | * cl_rpcclient is using krb5i/p, use the integrity protected cl_rpcclient | |
8220 | * and the machine credential as per RFC3530bis and RFC5661 Security | |
8221 | * Considerations sections. Otherwise, just use the user cred with the | |
8222 | * filesystem's rpc_client. | |
5ec16a85 | 8223 | */ |
a5250def | 8224 | static int _nfs4_proc_secinfo(struct inode *dir, const struct qstr *name, struct nfs4_secinfo_flavors *flavors, bool use_integrity) |
5a5ea0d4 BS |
8225 | { |
8226 | int status; | |
50493364 AS |
8227 | struct rpc_clnt *clnt = NFS_SERVER(dir)->client; |
8228 | struct nfs_client *clp = NFS_SERVER(dir)->nfs_client; | |
5a5ea0d4 BS |
8229 | struct nfs4_secinfo_arg args = { |
8230 | .dir_fh = NFS_FH(dir), | |
8231 | .name = name, | |
8232 | }; | |
8233 | struct nfs4_secinfo_res res = { | |
8234 | .flavors = flavors, | |
8235 | }; | |
8236 | struct rpc_message msg = { | |
8237 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SECINFO], | |
8238 | .rpc_argp = &args, | |
8239 | .rpc_resp = &res, | |
8240 | }; | |
50493364 AS |
8241 | struct nfs4_call_sync_data data = { |
8242 | .seq_server = NFS_SERVER(dir), | |
8243 | .seq_args = &args.seq_args, | |
8244 | .seq_res = &res.seq_res, | |
8245 | }; | |
8246 | struct rpc_task_setup task_setup = { | |
8247 | .rpc_client = clnt, | |
8248 | .rpc_message = &msg, | |
8249 | .callback_ops = clp->cl_mvops->call_sync_ops, | |
8250 | .callback_data = &data, | |
8251 | .flags = RPC_TASK_NO_ROUND_ROBIN, | |
8252 | }; | |
a52458b4 | 8253 | const struct cred *cred = NULL; |
a5250def WAA |
8254 | |
8255 | if (use_integrity) { | |
50493364 AS |
8256 | clnt = clp->cl_rpcclient; |
8257 | task_setup.rpc_client = clnt; | |
8258 | ||
8259 | cred = nfs4_get_clid_cred(clp); | |
7cb852df | 8260 | msg.rpc_cred = cred; |
a5250def | 8261 | } |
5a5ea0d4 BS |
8262 | |
8263 | dprintk("NFS call secinfo %s\n", name->name); | |
8b5bee2e | 8264 | |
50493364 AS |
8265 | nfs4_state_protect(clp, NFS_SP4_MACH_CRED_SECINFO, &clnt, &msg); |
8266 | nfs4_init_sequence(&args.seq_args, &res.seq_res, 0, 0); | |
8267 | status = nfs4_call_sync_custom(&task_setup); | |
8b5bee2e | 8268 | |
5a5ea0d4 | 8269 | dprintk("NFS reply secinfo: %d\n", status); |
a5250def | 8270 | |
a52458b4 | 8271 | put_cred(cred); |
5a5ea0d4 BS |
8272 | return status; |
8273 | } | |
8274 | ||
72de53ec BS |
8275 | int nfs4_proc_secinfo(struct inode *dir, const struct qstr *name, |
8276 | struct nfs4_secinfo_flavors *flavors) | |
5a5ea0d4 | 8277 | { |
0688e64b TM |
8278 | struct nfs4_exception exception = { |
8279 | .interruptible = true, | |
8280 | }; | |
5a5ea0d4 BS |
8281 | int err; |
8282 | do { | |
a5250def WAA |
8283 | err = -NFS4ERR_WRONGSEC; |
8284 | ||
8285 | /* try to use integrity protection with machine cred */ | |
8286 | if (_nfs4_is_integrity_protected(NFS_SERVER(dir)->nfs_client)) | |
8287 | err = _nfs4_proc_secinfo(dir, name, flavors, true); | |
8288 | ||
8289 | /* | |
8290 | * if unable to use integrity protection, or SECINFO with | |
8291 | * integrity protection returns NFS4ERR_WRONGSEC (which is | |
8292 | * disallowed by spec, but exists in deployed servers) use | |
8293 | * the current filesystem's rpc_client and the user cred. | |
8294 | */ | |
8295 | if (err == -NFS4ERR_WRONGSEC) | |
8296 | err = _nfs4_proc_secinfo(dir, name, flavors, false); | |
8297 | ||
078ea3df TM |
8298 | trace_nfs4_secinfo(dir, name, err); |
8299 | err = nfs4_handle_exception(NFS_SERVER(dir), err, | |
5a5ea0d4 BS |
8300 | &exception); |
8301 | } while (exception.retry); | |
8302 | return err; | |
8303 | } | |
8304 | ||
557134a3 | 8305 | #ifdef CONFIG_NFS_V4_1 |
357f54d6 AA |
8306 | /* |
8307 | * Check the exchange flags returned by the server for invalid flags, having | |
8308 | * both PNFS and NON_PNFS flags set, and not having one of NON_PNFS, PNFS, or | |
8309 | * DS flags set. | |
8310 | */ | |
8c39076c | 8311 | static int nfs4_check_cl_exchange_flags(u32 flags, u32 version) |
357f54d6 | 8312 | { |
8c39076c OK |
8313 | if (version >= 2 && (flags & ~EXCHGID4_2_FLAG_MASK_R)) |
8314 | goto out_inval; | |
8315 | else if (version < 2 && (flags & ~EXCHGID4_FLAG_MASK_R)) | |
357f54d6 AA |
8316 | goto out_inval; |
8317 | if ((flags & EXCHGID4_FLAG_USE_PNFS_MDS) && | |
8318 | (flags & EXCHGID4_FLAG_USE_NON_PNFS)) | |
8319 | goto out_inval; | |
8320 | if (!(flags & (EXCHGID4_FLAG_MASK_PNFS))) | |
8321 | goto out_inval; | |
8322 | return NFS_OK; | |
8323 | out_inval: | |
8324 | return -NFS4ERR_INVAL; | |
8325 | } | |
8326 | ||
78fe0f41 | 8327 | static bool |
79d4e1f0 CL |
8328 | nfs41_same_server_scope(struct nfs41_server_scope *a, |
8329 | struct nfs41_server_scope *b) | |
78fe0f41 | 8330 | { |
49ad0145 AS |
8331 | if (a->server_scope_sz != b->server_scope_sz) |
8332 | return false; | |
8333 | return memcmp(a->server_scope, b->server_scope, a->server_scope_sz) == 0; | |
78fe0f41 WAA |
8334 | } |
8335 | ||
02a95dee AA |
8336 | static void |
8337 | nfs4_bind_one_conn_to_session_done(struct rpc_task *task, void *calldata) | |
8338 | { | |
5c441544 | 8339 | struct nfs41_bind_conn_to_session_args *args = task->tk_msg.rpc_argp; |
dff58530 | 8340 | struct nfs41_bind_conn_to_session_res *res = task->tk_msg.rpc_resp; |
5c441544 TM |
8341 | struct nfs_client *clp = args->client; |
8342 | ||
8343 | switch (task->tk_status) { | |
8344 | case -NFS4ERR_BADSESSION: | |
8345 | case -NFS4ERR_DEADSESSION: | |
8346 | nfs4_schedule_session_recovery(clp->cl_session, | |
8347 | task->tk_status); | |
495b9746 | 8348 | return; |
5c441544 | 8349 | } |
dff58530 OK |
8350 | if (args->dir == NFS4_CDFC4_FORE_OR_BOTH && |
8351 | res->dir != NFS4_CDFS4_BOTH) { | |
8352 | rpc_task_close_connection(task); | |
8353 | if (args->retries++ < MAX_BIND_CONN_TO_SESSION_RETRIES) | |
8354 | rpc_restart_call(task); | |
8355 | } | |
02a95dee AA |
8356 | } |
8357 | ||
8358 | static const struct rpc_call_ops nfs4_bind_one_conn_to_session_ops = { | |
1c709b76 | 8359 | .rpc_call_done = nfs4_bind_one_conn_to_session_done, |
02a95dee AA |
8360 | }; |
8361 | ||
7c44f1ae | 8362 | /* |
d9ddbf5d | 8363 | * nfs4_proc_bind_one_conn_to_session() |
7c44f1ae WAA |
8364 | * |
8365 | * The 4.1 client currently uses the same TCP connection for the | |
8366 | * fore and backchannel. | |
8367 | */ | |
d9ddbf5d TM |
8368 | static |
8369 | int nfs4_proc_bind_one_conn_to_session(struct rpc_clnt *clnt, | |
8370 | struct rpc_xprt *xprt, | |
8371 | struct nfs_client *clp, | |
a52458b4 | 8372 | const struct cred *cred) |
7c44f1ae WAA |
8373 | { |
8374 | int status; | |
71a097c6 TM |
8375 | struct nfs41_bind_conn_to_session_args args = { |
8376 | .client = clp, | |
8377 | .dir = NFS4_CDFC4_FORE_OR_BOTH, | |
dff58530 | 8378 | .retries = 0, |
71a097c6 | 8379 | }; |
7c44f1ae WAA |
8380 | struct nfs41_bind_conn_to_session_res res; |
8381 | struct rpc_message msg = { | |
8382 | .rpc_proc = | |
8383 | &nfs4_procedures[NFSPROC4_CLNT_BIND_CONN_TO_SESSION], | |
71a097c6 | 8384 | .rpc_argp = &args, |
7c44f1ae | 8385 | .rpc_resp = &res, |
2cf047c9 | 8386 | .rpc_cred = cred, |
7c44f1ae | 8387 | }; |
d9ddbf5d TM |
8388 | struct rpc_task_setup task_setup_data = { |
8389 | .rpc_client = clnt, | |
8390 | .rpc_xprt = xprt, | |
02a95dee | 8391 | .callback_ops = &nfs4_bind_one_conn_to_session_ops, |
d9ddbf5d TM |
8392 | .rpc_message = &msg, |
8393 | .flags = RPC_TASK_TIMEOUT, | |
8394 | }; | |
8395 | struct rpc_task *task; | |
7c44f1ae | 8396 | |
71a097c6 TM |
8397 | nfs4_copy_sessionid(&args.sessionid, &clp->cl_session->sess_id); |
8398 | if (!(clp->cl_session->flags & SESSION4_BACK_CHAN)) | |
8399 | args.dir = NFS4_CDFC4_FORE; | |
7c44f1ae | 8400 | |
d9ddbf5d TM |
8401 | /* Do not set the backchannel flag unless this is clnt->cl_xprt */ |
8402 | if (xprt != rcu_access_pointer(clnt->cl_xprt)) | |
8403 | args.dir = NFS4_CDFC4_FORE; | |
8404 | ||
8405 | task = rpc_run_task(&task_setup_data); | |
8406 | if (!IS_ERR(task)) { | |
8407 | status = task->tk_status; | |
8408 | rpc_put_task(task); | |
8409 | } else | |
8410 | status = PTR_ERR(task); | |
c6d01c6f | 8411 | trace_nfs4_bind_conn_to_session(clp, status); |
7c44f1ae | 8412 | if (status == 0) { |
71a097c6 | 8413 | if (memcmp(res.sessionid.data, |
7c44f1ae WAA |
8414 | clp->cl_session->sess_id.data, NFS4_MAX_SESSIONID_LEN)) { |
8415 | dprintk("NFS: %s: Session ID mismatch\n", __func__); | |
c7ae7639 | 8416 | return -EIO; |
7c44f1ae | 8417 | } |
71a097c6 | 8418 | if ((res.dir & args.dir) != res.dir || res.dir == 0) { |
7c44f1ae WAA |
8419 | dprintk("NFS: %s: Unexpected direction from server\n", |
8420 | __func__); | |
c7ae7639 | 8421 | return -EIO; |
7c44f1ae | 8422 | } |
71a097c6 | 8423 | if (res.use_conn_in_rdma_mode != args.use_conn_in_rdma_mode) { |
7c44f1ae WAA |
8424 | dprintk("NFS: %s: Server returned RDMA mode = true\n", |
8425 | __func__); | |
c7ae7639 | 8426 | return -EIO; |
7c44f1ae WAA |
8427 | } |
8428 | } | |
c7ae7639 | 8429 | |
7c44f1ae WAA |
8430 | return status; |
8431 | } | |
8432 | ||
d9ddbf5d TM |
8433 | struct rpc_bind_conn_calldata { |
8434 | struct nfs_client *clp; | |
a52458b4 | 8435 | const struct cred *cred; |
d9ddbf5d TM |
8436 | }; |
8437 | ||
8438 | static int | |
8439 | nfs4_proc_bind_conn_to_session_callback(struct rpc_clnt *clnt, | |
8440 | struct rpc_xprt *xprt, | |
8441 | void *calldata) | |
8442 | { | |
8443 | struct rpc_bind_conn_calldata *p = calldata; | |
8444 | ||
8445 | return nfs4_proc_bind_one_conn_to_session(clnt, xprt, p->clp, p->cred); | |
8446 | } | |
8447 | ||
a52458b4 | 8448 | int nfs4_proc_bind_conn_to_session(struct nfs_client *clp, const struct cred *cred) |
d9ddbf5d TM |
8449 | { |
8450 | struct rpc_bind_conn_calldata data = { | |
8451 | .clp = clp, | |
8452 | .cred = cred, | |
8453 | }; | |
8454 | return rpc_clnt_iterate_for_each_xprt(clp->cl_rpcclient, | |
8455 | nfs4_proc_bind_conn_to_session_callback, &data); | |
8456 | } | |
8457 | ||
99fe60d0 | 8458 | /* |
fa940720 WAA |
8459 | * Minimum set of SP4_MACH_CRED operations from RFC 5661 in the enforce map |
8460 | * and operations we'd like to see to enable certain features in the allow map | |
2031cd1a WAA |
8461 | */ |
8462 | static const struct nfs41_state_protection nfs4_sp4_mach_cred_request = { | |
8463 | .how = SP4_MACH_CRED, | |
8464 | .enforce.u.words = { | |
8465 | [1] = 1 << (OP_BIND_CONN_TO_SESSION - 32) | | |
8466 | 1 << (OP_EXCHANGE_ID - 32) | | |
8467 | 1 << (OP_CREATE_SESSION - 32) | | |
8468 | 1 << (OP_DESTROY_SESSION - 32) | | |
8469 | 1 << (OP_DESTROY_CLIENTID - 32) | |
fa940720 WAA |
8470 | }, |
8471 | .allow.u.words = { | |
8472 | [0] = 1 << (OP_CLOSE) | | |
99ade3c7 | 8473 | 1 << (OP_OPEN_DOWNGRADE) | |
a0279625 | 8474 | 1 << (OP_LOCKU) | |
99ade3c7 | 8475 | 1 << (OP_DELEGRETURN) | |
a0279625 | 8476 | 1 << (OP_COMMIT), |
8b5bee2e | 8477 | [1] = 1 << (OP_SECINFO - 32) | |
3787d506 | 8478 | 1 << (OP_SECINFO_NO_NAME - 32) | |
99ade3c7 | 8479 | 1 << (OP_LAYOUTRETURN - 32) | |
3787d506 | 8480 | 1 << (OP_TEST_STATEID - 32) | |
a0279625 WAA |
8481 | 1 << (OP_FREE_STATEID - 32) | |
8482 | 1 << (OP_WRITE - 32) | |
2031cd1a WAA |
8483 | } |
8484 | }; | |
8485 | ||
8486 | /* | |
8487 | * Select the state protection mode for client `clp' given the server results | |
8488 | * from exchange_id in `sp'. | |
99fe60d0 | 8489 | * |
2031cd1a WAA |
8490 | * Returns 0 on success, negative errno otherwise. |
8491 | */ | |
8492 | static int nfs4_sp4_select_mode(struct nfs_client *clp, | |
8493 | struct nfs41_state_protection *sp) | |
8494 | { | |
8495 | static const u32 supported_enforce[NFS4_OP_MAP_NUM_WORDS] = { | |
8496 | [1] = 1 << (OP_BIND_CONN_TO_SESSION - 32) | | |
8497 | 1 << (OP_EXCHANGE_ID - 32) | | |
8498 | 1 << (OP_CREATE_SESSION - 32) | | |
8499 | 1 << (OP_DESTROY_SESSION - 32) | | |
8500 | 1 << (OP_DESTROY_CLIENTID - 32) | |
8501 | }; | |
937e3133 | 8502 | unsigned long flags = 0; |
2031cd1a | 8503 | unsigned int i; |
937e3133 | 8504 | int ret = 0; |
2031cd1a WAA |
8505 | |
8506 | if (sp->how == SP4_MACH_CRED) { | |
8507 | /* Print state protect result */ | |
8508 | dfprintk(MOUNT, "Server SP4_MACH_CRED support:\n"); | |
8509 | for (i = 0; i <= LAST_NFS4_OP; i++) { | |
8510 | if (test_bit(i, sp->enforce.u.longs)) | |
8511 | dfprintk(MOUNT, " enforce op %d\n", i); | |
8512 | if (test_bit(i, sp->allow.u.longs)) | |
8513 | dfprintk(MOUNT, " allow op %d\n", i); | |
8514 | } | |
8515 | ||
8516 | /* make sure nothing is on enforce list that isn't supported */ | |
8517 | for (i = 0; i < NFS4_OP_MAP_NUM_WORDS; i++) { | |
8518 | if (sp->enforce.u.words[i] & ~supported_enforce[i]) { | |
8519 | dfprintk(MOUNT, "sp4_mach_cred: disabled\n"); | |
937e3133 TM |
8520 | ret = -EINVAL; |
8521 | goto out; | |
2031cd1a WAA |
8522 | } |
8523 | } | |
8524 | ||
8525 | /* | |
8526 | * Minimal mode - state operations are allowed to use machine | |
8527 | * credential. Note this already happens by default, so the | |
8528 | * client doesn't have to do anything more than the negotiation. | |
8529 | * | |
8530 | * NOTE: we don't care if EXCHANGE_ID is in the list - | |
8531 | * we're already using the machine cred for exchange_id | |
8532 | * and will never use a different cred. | |
8533 | */ | |
8534 | if (test_bit(OP_BIND_CONN_TO_SESSION, sp->enforce.u.longs) && | |
8535 | test_bit(OP_CREATE_SESSION, sp->enforce.u.longs) && | |
8536 | test_bit(OP_DESTROY_SESSION, sp->enforce.u.longs) && | |
8537 | test_bit(OP_DESTROY_CLIENTID, sp->enforce.u.longs)) { | |
8538 | dfprintk(MOUNT, "sp4_mach_cred:\n"); | |
8539 | dfprintk(MOUNT, " minimal mode enabled\n"); | |
937e3133 | 8540 | __set_bit(NFS_SP4_MACH_CRED_MINIMAL, &flags); |
2031cd1a WAA |
8541 | } else { |
8542 | dfprintk(MOUNT, "sp4_mach_cred: disabled\n"); | |
937e3133 TM |
8543 | ret = -EINVAL; |
8544 | goto out; | |
2031cd1a | 8545 | } |
fa940720 WAA |
8546 | |
8547 | if (test_bit(OP_CLOSE, sp->allow.u.longs) && | |
99ade3c7 AE |
8548 | test_bit(OP_OPEN_DOWNGRADE, sp->allow.u.longs) && |
8549 | test_bit(OP_DELEGRETURN, sp->allow.u.longs) && | |
fa940720 WAA |
8550 | test_bit(OP_LOCKU, sp->allow.u.longs)) { |
8551 | dfprintk(MOUNT, " cleanup mode enabled\n"); | |
937e3133 | 8552 | __set_bit(NFS_SP4_MACH_CRED_CLEANUP, &flags); |
fa940720 | 8553 | } |
8b5bee2e | 8554 | |
99ade3c7 AE |
8555 | if (test_bit(OP_LAYOUTRETURN, sp->allow.u.longs)) { |
8556 | dfprintk(MOUNT, " pnfs cleanup mode enabled\n"); | |
937e3133 | 8557 | __set_bit(NFS_SP4_MACH_CRED_PNFS_CLEANUP, &flags); |
99ade3c7 AE |
8558 | } |
8559 | ||
8b5bee2e WAA |
8560 | if (test_bit(OP_SECINFO, sp->allow.u.longs) && |
8561 | test_bit(OP_SECINFO_NO_NAME, sp->allow.u.longs)) { | |
8562 | dfprintk(MOUNT, " secinfo mode enabled\n"); | |
937e3133 | 8563 | __set_bit(NFS_SP4_MACH_CRED_SECINFO, &flags); |
8b5bee2e | 8564 | } |
3787d506 WAA |
8565 | |
8566 | if (test_bit(OP_TEST_STATEID, sp->allow.u.longs) && | |
8567 | test_bit(OP_FREE_STATEID, sp->allow.u.longs)) { | |
8568 | dfprintk(MOUNT, " stateid mode enabled\n"); | |
937e3133 | 8569 | __set_bit(NFS_SP4_MACH_CRED_STATEID, &flags); |
3787d506 | 8570 | } |
8c21c62c WAA |
8571 | |
8572 | if (test_bit(OP_WRITE, sp->allow.u.longs)) { | |
8573 | dfprintk(MOUNT, " write mode enabled\n"); | |
937e3133 | 8574 | __set_bit(NFS_SP4_MACH_CRED_WRITE, &flags); |
8c21c62c WAA |
8575 | } |
8576 | ||
8577 | if (test_bit(OP_COMMIT, sp->allow.u.longs)) { | |
8578 | dfprintk(MOUNT, " commit mode enabled\n"); | |
937e3133 | 8579 | __set_bit(NFS_SP4_MACH_CRED_COMMIT, &flags); |
8c21c62c | 8580 | } |
2031cd1a | 8581 | } |
937e3133 TM |
8582 | out: |
8583 | clp->cl_sp4_flags = flags; | |
72bf75cf | 8584 | return ret; |
2031cd1a WAA |
8585 | } |
8586 | ||
8d89bd70 AA |
8587 | struct nfs41_exchange_id_data { |
8588 | struct nfs41_exchange_id_res res; | |
8589 | struct nfs41_exchange_id_args args; | |
8d89bd70 AA |
8590 | }; |
8591 | ||
8d89bd70 AA |
8592 | static void nfs4_exchange_id_release(void *data) |
8593 | { | |
8594 | struct nfs41_exchange_id_data *cdata = | |
8595 | (struct nfs41_exchange_id_data *)data; | |
8596 | ||
63513232 | 8597 | nfs_put_client(cdata->args.client); |
8d89bd70 AA |
8598 | kfree(cdata->res.impl_id); |
8599 | kfree(cdata->res.server_scope); | |
8600 | kfree(cdata->res.server_owner); | |
8601 | kfree(cdata); | |
8602 | } | |
8603 | ||
8604 | static const struct rpc_call_ops nfs4_exchange_id_call_ops = { | |
8d89bd70 AA |
8605 | .rpc_release = nfs4_exchange_id_release, |
8606 | }; | |
8607 | ||
2031cd1a WAA |
8608 | /* |
8609 | * _nfs4_proc_exchange_id() | |
6bbb4ae8 | 8610 | * |
2031cd1a | 8611 | * Wrapper for EXCHANGE_ID operation. |
99fe60d0 | 8612 | */ |
9c760d1f | 8613 | static struct rpc_task * |
a52458b4 | 8614 | nfs4_run_exchange_id(struct nfs_client *clp, const struct cred *cred, |
ad0849a7 | 8615 | u32 sp4_how, struct rpc_xprt *xprt) |
99fe60d0 | 8616 | { |
99fe60d0 BH |
8617 | struct rpc_message msg = { |
8618 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_EXCHANGE_ID], | |
99fe60d0 BH |
8619 | .rpc_cred = cred, |
8620 | }; | |
8d89bd70 AA |
8621 | struct rpc_task_setup task_setup_data = { |
8622 | .rpc_client = clp->cl_rpcclient, | |
8623 | .callback_ops = &nfs4_exchange_id_call_ops, | |
8624 | .rpc_message = &msg, | |
5a0c257f | 8625 | .flags = RPC_TASK_TIMEOUT | RPC_TASK_NO_ROUND_ROBIN, |
8d89bd70 AA |
8626 | }; |
8627 | struct nfs41_exchange_id_data *calldata; | |
e917f0d1 | 8628 | int status; |
8d89bd70 | 8629 | |
212bf41d | 8630 | if (!refcount_inc_not_zero(&clp->cl_count)) |
9c760d1f | 8631 | return ERR_PTR(-EIO); |
8d89bd70 | 8632 | |
9c760d1f | 8633 | status = -ENOMEM; |
8d89bd70 | 8634 | calldata = kzalloc(sizeof(*calldata), GFP_NOFS); |
9c760d1f TM |
8635 | if (!calldata) |
8636 | goto out; | |
99fe60d0 | 8637 | |
fd40559c | 8638 | nfs4_init_boot_verifier(clp, &calldata->args.verifier); |
873e3851 JL |
8639 | |
8640 | status = nfs4_init_uniform_client_string(clp); | |
8641 | if (status) | |
8d89bd70 | 8642 | goto out_calldata; |
3a6bb738 | 8643 | |
8d89bd70 AA |
8644 | calldata->res.server_owner = kzalloc(sizeof(struct nfs41_server_owner), |
8645 | GFP_NOFS); | |
8646 | status = -ENOMEM; | |
8647 | if (unlikely(calldata->res.server_owner == NULL)) | |
8648 | goto out_calldata; | |
78fe0f41 | 8649 | |
8d89bd70 | 8650 | calldata->res.server_scope = kzalloc(sizeof(struct nfs41_server_scope), |
bbafffd2 | 8651 | GFP_NOFS); |
8d89bd70 | 8652 | if (unlikely(calldata->res.server_scope == NULL)) |
acdeb69d | 8653 | goto out_server_owner; |
78fe0f41 | 8654 | |
8d89bd70 AA |
8655 | calldata->res.impl_id = kzalloc(sizeof(struct nfs41_impl_id), GFP_NOFS); |
8656 | if (unlikely(calldata->res.impl_id == NULL)) | |
7d2ed9ac | 8657 | goto out_server_scope; |
7d2ed9ac | 8658 | |
2031cd1a WAA |
8659 | switch (sp4_how) { |
8660 | case SP4_NONE: | |
8d89bd70 | 8661 | calldata->args.state_protect.how = SP4_NONE; |
2031cd1a WAA |
8662 | break; |
8663 | ||
8664 | case SP4_MACH_CRED: | |
8d89bd70 | 8665 | calldata->args.state_protect = nfs4_sp4_mach_cred_request; |
2031cd1a WAA |
8666 | break; |
8667 | ||
8668 | default: | |
8669 | /* unsupported! */ | |
8670 | WARN_ON_ONCE(1); | |
8671 | status = -EINVAL; | |
6b55970b | 8672 | goto out_impl_id; |
2031cd1a | 8673 | } |
ad0849a7 | 8674 | if (xprt) { |
ad0849a7 | 8675 | task_setup_data.rpc_xprt = xprt; |
d9cb7330 | 8676 | task_setup_data.flags |= RPC_TASK_SOFTCONN; |
fd40559c TM |
8677 | memcpy(calldata->args.verifier.data, clp->cl_confirm.data, |
8678 | sizeof(calldata->args.verifier.data)); | |
ad0849a7 | 8679 | } |
8d89bd70 | 8680 | calldata->args.client = clp; |
8d89bd70 | 8681 | calldata->args.flags = EXCHGID4_FLAG_SUPP_MOVED_REFER | |
bfab2817 TM |
8682 | EXCHGID4_FLAG_BIND_PRINC_STATEID; |
8683 | #ifdef CONFIG_NFS_V4_1_MIGRATION | |
8684 | calldata->args.flags |= EXCHGID4_FLAG_SUPP_MOVED_MIGR; | |
8d89bd70 AA |
8685 | #endif |
8686 | msg.rpc_argp = &calldata->args; | |
8687 | msg.rpc_resp = &calldata->res; | |
8688 | task_setup_data.callback_data = calldata; | |
2031cd1a | 8689 | |
9c760d1f | 8690 | return rpc_run_task(&task_setup_data); |
8d89bd70 AA |
8691 | |
8692 | out_impl_id: | |
8693 | kfree(calldata->res.impl_id); | |
8694 | out_server_scope: | |
8695 | kfree(calldata->res.server_scope); | |
8696 | out_server_owner: | |
8697 | kfree(calldata->res.server_owner); | |
8698 | out_calldata: | |
8699 | kfree(calldata); | |
9c760d1f | 8700 | out: |
63513232 | 8701 | nfs_put_client(clp); |
9c760d1f TM |
8702 | return ERR_PTR(status); |
8703 | } | |
8704 | ||
8705 | /* | |
8706 | * _nfs4_proc_exchange_id() | |
8707 | * | |
8708 | * Wrapper for EXCHANGE_ID operation. | |
8709 | */ | |
a52458b4 | 8710 | static int _nfs4_proc_exchange_id(struct nfs_client *clp, const struct cred *cred, |
9c760d1f TM |
8711 | u32 sp4_how) |
8712 | { | |
8713 | struct rpc_task *task; | |
8714 | struct nfs41_exchange_id_args *argp; | |
8715 | struct nfs41_exchange_id_res *resp; | |
7dc2993a | 8716 | unsigned long now = jiffies; |
9c760d1f TM |
8717 | int status; |
8718 | ||
8719 | task = nfs4_run_exchange_id(clp, cred, sp4_how, NULL); | |
8720 | if (IS_ERR(task)) | |
8721 | return PTR_ERR(task); | |
8722 | ||
8723 | argp = task->tk_msg.rpc_argp; | |
8724 | resp = task->tk_msg.rpc_resp; | |
8725 | status = task->tk_status; | |
8726 | if (status != 0) | |
8727 | goto out; | |
8728 | ||
8c39076c OK |
8729 | status = nfs4_check_cl_exchange_flags(resp->flags, |
8730 | clp->cl_mvops->minor_version); | |
9c760d1f TM |
8731 | if (status != 0) |
8732 | goto out; | |
8733 | ||
8734 | status = nfs4_sp4_select_mode(clp, &resp->state_protect); | |
8735 | if (status != 0) | |
8736 | goto out; | |
8737 | ||
7dc2993a RM |
8738 | do_renew_lease(clp, now); |
8739 | ||
9c760d1f TM |
8740 | clp->cl_clientid = resp->clientid; |
8741 | clp->cl_exchange_flags = resp->flags; | |
8742 | clp->cl_seqid = resp->seqid; | |
8743 | /* Client ID is not confirmed */ | |
8744 | if (!(resp->flags & EXCHGID4_FLAG_CONFIRMED_R)) | |
8745 | clear_bit(NFS4_SESSION_ESTABLISHED, | |
8746 | &clp->cl_session->session_state); | |
8747 | ||
8748 | if (clp->cl_serverscope != NULL && | |
8749 | !nfs41_same_server_scope(clp->cl_serverscope, | |
8750 | resp->server_scope)) { | |
8751 | dprintk("%s: server_scope mismatch detected\n", | |
8752 | __func__); | |
8753 | set_bit(NFS4CLNT_SERVER_SCOPE_MISMATCH, &clp->cl_state); | |
8754 | } | |
8755 | ||
8756 | swap(clp->cl_serverowner, resp->server_owner); | |
8757 | swap(clp->cl_serverscope, resp->server_scope); | |
8758 | swap(clp->cl_implid, resp->impl_id); | |
8759 | ||
8760 | /* Save the EXCHANGE_ID verifier session trunk tests */ | |
8761 | memcpy(clp->cl_confirm.data, argp->verifier.data, | |
8762 | sizeof(clp->cl_confirm.data)); | |
8763 | out: | |
8764 | trace_nfs4_exchange_id(clp, status); | |
8765 | rpc_put_task(task); | |
8766 | return status; | |
99fe60d0 BH |
8767 | } |
8768 | ||
2031cd1a WAA |
8769 | /* |
8770 | * nfs4_proc_exchange_id() | |
8771 | * | |
8772 | * Returns zero, a negative errno, or a negative NFS4ERR status code. | |
8773 | * | |
8774 | * Since the clientid has expired, all compounds using sessions | |
8775 | * associated with the stale clientid will be returning | |
8776 | * NFS4ERR_BADSESSION in the sequence operation, and will therefore | |
8777 | * be in some phase of session reset. | |
8778 | * | |
8779 | * Will attempt to negotiate SP4_MACH_CRED if krb5i / krb5p auth is used. | |
8780 | */ | |
a52458b4 | 8781 | int nfs4_proc_exchange_id(struct nfs_client *clp, const struct cred *cred) |
2031cd1a WAA |
8782 | { |
8783 | rpc_authflavor_t authflavor = clp->cl_rpcclient->cl_auth->au_flavor; | |
8784 | int status; | |
8785 | ||
8786 | /* try SP4_MACH_CRED if krb5i/p */ | |
8787 | if (authflavor == RPC_AUTH_GSS_KRB5I || | |
8788 | authflavor == RPC_AUTH_GSS_KRB5P) { | |
9c760d1f | 8789 | status = _nfs4_proc_exchange_id(clp, cred, SP4_MACH_CRED); |
2031cd1a WAA |
8790 | if (!status) |
8791 | return 0; | |
8792 | } | |
8793 | ||
8794 | /* try SP4_NONE */ | |
9c760d1f | 8795 | return _nfs4_proc_exchange_id(clp, cred, SP4_NONE); |
2031cd1a WAA |
8796 | } |
8797 | ||
04fa2c6b AA |
8798 | /** |
8799 | * nfs4_test_session_trunk | |
8800 | * | |
8801 | * This is an add_xprt_test() test function called from | |
8802 | * rpc_clnt_setup_test_and_add_xprt. | |
8803 | * | |
8804 | * The rpc_xprt_switch is referrenced by rpc_clnt_setup_test_and_add_xprt | |
8805 | * and is dereferrenced in nfs4_exchange_id_release | |
8806 | * | |
8807 | * Upon success, add the new transport to the rpc_clnt | |
8808 | * | |
8809 | * @clnt: struct rpc_clnt to get new transport | |
8810 | * @xprt: the rpc_xprt to test | |
8811 | * @data: call data for _nfs4_proc_exchange_id. | |
8812 | */ | |
10e037d1 | 8813 | void nfs4_test_session_trunk(struct rpc_clnt *clnt, struct rpc_xprt *xprt, |
04fa2c6b AA |
8814 | void *data) |
8815 | { | |
8816 | struct nfs4_add_xprt_data *adata = (struct nfs4_add_xprt_data *)data; | |
9c760d1f TM |
8817 | struct rpc_task *task; |
8818 | int status; | |
8819 | ||
04fa2c6b AA |
8820 | u32 sp4_how; |
8821 | ||
8822 | dprintk("--> %s try %s\n", __func__, | |
8823 | xprt->address_strings[RPC_DISPLAY_ADDR]); | |
8824 | ||
8825 | sp4_how = (adata->clp->cl_sp4_flags == 0 ? SP4_NONE : SP4_MACH_CRED); | |
8826 | ||
8827 | /* Test connection for session trunking. Async exchange_id call */ | |
9c760d1f TM |
8828 | task = nfs4_run_exchange_id(adata->clp, adata->cred, sp4_how, xprt); |
8829 | if (IS_ERR(task)) | |
10e037d1 | 8830 | return; |
9c760d1f TM |
8831 | |
8832 | status = task->tk_status; | |
8833 | if (status == 0) | |
8834 | status = nfs4_detect_session_trunking(adata->clp, | |
8835 | task->tk_msg.rpc_resp, xprt); | |
8836 | ||
10e037d1 S |
8837 | if (status == 0) |
8838 | rpc_clnt_xprt_switch_add_xprt(clnt, xprt); | |
8839 | ||
9c760d1f | 8840 | rpc_put_task(task); |
2031cd1a | 8841 | } |
04fa2c6b | 8842 | EXPORT_SYMBOL_GPL(nfs4_test_session_trunk); |
2031cd1a | 8843 | |
66245539 | 8844 | static int _nfs4_proc_destroy_clientid(struct nfs_client *clp, |
a52458b4 | 8845 | const struct cred *cred) |
66245539 TM |
8846 | { |
8847 | struct rpc_message msg = { | |
8848 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_DESTROY_CLIENTID], | |
8849 | .rpc_argp = clp, | |
8850 | .rpc_cred = cred, | |
8851 | }; | |
8852 | int status; | |
8853 | ||
5a0c257f N |
8854 | status = rpc_call_sync(clp->cl_rpcclient, &msg, |
8855 | RPC_TASK_TIMEOUT | RPC_TASK_NO_ROUND_ROBIN); | |
c6d01c6f | 8856 | trace_nfs4_destroy_clientid(clp, status); |
66245539 | 8857 | if (status) |
02c67525 | 8858 | dprintk("NFS: Got error %d from the server %s on " |
66245539 TM |
8859 | "DESTROY_CLIENTID.", status, clp->cl_hostname); |
8860 | return status; | |
8861 | } | |
8862 | ||
8863 | static int nfs4_proc_destroy_clientid(struct nfs_client *clp, | |
a52458b4 | 8864 | const struct cred *cred) |
66245539 TM |
8865 | { |
8866 | unsigned int loop; | |
8867 | int ret; | |
8868 | ||
8869 | for (loop = NFS4_MAX_LOOP_ON_RECOVER; loop != 0; loop--) { | |
8870 | ret = _nfs4_proc_destroy_clientid(clp, cred); | |
8871 | switch (ret) { | |
8872 | case -NFS4ERR_DELAY: | |
8873 | case -NFS4ERR_CLIENTID_BUSY: | |
8874 | ssleep(1); | |
8875 | break; | |
8876 | default: | |
8877 | return ret; | |
8878 | } | |
8879 | } | |
8880 | return 0; | |
8881 | } | |
8882 | ||
8883 | int nfs4_destroy_clientid(struct nfs_client *clp) | |
8884 | { | |
a52458b4 | 8885 | const struct cred *cred; |
66245539 TM |
8886 | int ret = 0; |
8887 | ||
8888 | if (clp->cl_mvops->minor_version < 1) | |
8889 | goto out; | |
8890 | if (clp->cl_exchange_flags == 0) | |
8891 | goto out; | |
05f4c350 CL |
8892 | if (clp->cl_preserve_clid) |
8893 | goto out; | |
73d8bde5 | 8894 | cred = nfs4_get_clid_cred(clp); |
66245539 | 8895 | ret = nfs4_proc_destroy_clientid(clp, cred); |
a52458b4 | 8896 | put_cred(cred); |
66245539 TM |
8897 | switch (ret) { |
8898 | case 0: | |
8899 | case -NFS4ERR_STALE_CLIENTID: | |
8900 | clp->cl_exchange_flags = 0; | |
8901 | } | |
8902 | out: | |
8903 | return ret; | |
8904 | } | |
8905 | ||
0efb01b2 DB |
8906 | #endif /* CONFIG_NFS_V4_1 */ |
8907 | ||
2050f0cc AA |
8908 | struct nfs4_get_lease_time_data { |
8909 | struct nfs4_get_lease_time_args *args; | |
8910 | struct nfs4_get_lease_time_res *res; | |
8911 | struct nfs_client *clp; | |
8912 | }; | |
8913 | ||
8914 | static void nfs4_get_lease_time_prepare(struct rpc_task *task, | |
8915 | void *calldata) | |
8916 | { | |
2050f0cc AA |
8917 | struct nfs4_get_lease_time_data *data = |
8918 | (struct nfs4_get_lease_time_data *)calldata; | |
8919 | ||
8920 | dprintk("--> %s\n", __func__); | |
8921 | /* just setup sequence, do not trigger session recovery | |
8922 | since we're invoked within one */ | |
7981c8a6 | 8923 | nfs4_setup_sequence(data->clp, |
d9afbd1b TM |
8924 | &data->args->la_seq_args, |
8925 | &data->res->lr_seq_res, | |
8926 | task); | |
2050f0cc AA |
8927 | dprintk("<-- %s\n", __func__); |
8928 | } | |
8929 | ||
8930 | /* | |
8931 | * Called from nfs4_state_manager thread for session setup, so don't recover | |
8932 | * from sequence operation or clientid errors. | |
8933 | */ | |
8934 | static void nfs4_get_lease_time_done(struct rpc_task *task, void *calldata) | |
8935 | { | |
8936 | struct nfs4_get_lease_time_data *data = | |
8937 | (struct nfs4_get_lease_time_data *)calldata; | |
8938 | ||
8939 | dprintk("--> %s\n", __func__); | |
0efb01b2 | 8940 | if (!nfs4_sequence_done(task, &data->res->lr_seq_res)) |
14516c3a | 8941 | return; |
2050f0cc AA |
8942 | switch (task->tk_status) { |
8943 | case -NFS4ERR_DELAY: | |
8944 | case -NFS4ERR_GRACE: | |
8945 | dprintk("%s Retry: tk_status %d\n", __func__, task->tk_status); | |
8946 | rpc_delay(task, NFS4_POLL_RETRY_MIN); | |
8947 | task->tk_status = 0; | |
df561f66 | 8948 | fallthrough; |
a8a4ae3a | 8949 | case -NFS4ERR_RETRY_UNCACHED_REP: |
d00c5d43 | 8950 | rpc_restart_call_prepare(task); |
2050f0cc AA |
8951 | return; |
8952 | } | |
2050f0cc AA |
8953 | dprintk("<-- %s\n", __func__); |
8954 | } | |
8955 | ||
17280175 | 8956 | static const struct rpc_call_ops nfs4_get_lease_time_ops = { |
2050f0cc AA |
8957 | .rpc_call_prepare = nfs4_get_lease_time_prepare, |
8958 | .rpc_call_done = nfs4_get_lease_time_done, | |
8959 | }; | |
8960 | ||
8961 | int nfs4_proc_get_lease_time(struct nfs_client *clp, struct nfs_fsinfo *fsinfo) | |
8962 | { | |
2050f0cc AA |
8963 | struct nfs4_get_lease_time_args args; |
8964 | struct nfs4_get_lease_time_res res = { | |
8965 | .lr_fsinfo = fsinfo, | |
8966 | }; | |
8967 | struct nfs4_get_lease_time_data data = { | |
8968 | .args = &args, | |
8969 | .res = &res, | |
8970 | .clp = clp, | |
8971 | }; | |
8972 | struct rpc_message msg = { | |
8973 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GET_LEASE_TIME], | |
8974 | .rpc_argp = &args, | |
8975 | .rpc_resp = &res, | |
8976 | }; | |
8977 | struct rpc_task_setup task_setup = { | |
8978 | .rpc_client = clp->cl_rpcclient, | |
8979 | .rpc_message = &msg, | |
8980 | .callback_ops = &nfs4_get_lease_time_ops, | |
1bd714f2 TM |
8981 | .callback_data = &data, |
8982 | .flags = RPC_TASK_TIMEOUT, | |
2050f0cc | 8983 | }; |
2050f0cc | 8984 | |
fba83f34 | 8985 | nfs4_init_sequence(&args.la_seq_args, &res.lr_seq_res, 0, 1); |
f836b27e | 8986 | return nfs4_call_sync_custom(&task_setup); |
2050f0cc AA |
8987 | } |
8988 | ||
0efb01b2 DB |
8989 | #ifdef CONFIG_NFS_V4_1 |
8990 | ||
fc931582 AA |
8991 | /* |
8992 | * Initialize the values to be used by the client in CREATE_SESSION | |
8993 | * If nfs4_init_session set the fore channel request and response sizes, | |
8994 | * use them. | |
8995 | * | |
8996 | * Set the back channel max_resp_sz_cached to zero to force the client to | |
8997 | * always set csa_cachethis to FALSE because the current implementation | |
8998 | * of the back channel DRC only supports caching the CB_SEQUENCE operation. | |
8999 | */ | |
6b26cc8c CL |
9000 | static void nfs4_init_channel_attrs(struct nfs41_create_session_args *args, |
9001 | struct rpc_clnt *clnt) | |
fc931582 | 9002 | { |
18aad3d5 | 9003 | unsigned int max_rqst_sz, max_resp_sz; |
6b26cc8c | 9004 | unsigned int max_bc_payload = rpc_max_bc_payload(clnt); |
7402a4fe | 9005 | unsigned int max_bc_slots = rpc_num_bc_slots(clnt); |
18aad3d5 AA |
9006 | |
9007 | max_rqst_sz = NFS_MAX_FILE_IO_SIZE + nfs41_maxwrite_overhead; | |
9008 | max_resp_sz = NFS_MAX_FILE_IO_SIZE + nfs41_maxread_overhead; | |
fc931582 | 9009 | |
fc931582 | 9010 | /* Fore channel attributes */ |
18aad3d5 AA |
9011 | args->fc_attrs.max_rqst_sz = max_rqst_sz; |
9012 | args->fc_attrs.max_resp_sz = max_resp_sz; | |
fc931582 | 9013 | args->fc_attrs.max_ops = NFS4_MAX_OPS; |
ef159e91 | 9014 | args->fc_attrs.max_reqs = max_session_slots; |
fc931582 AA |
9015 | |
9016 | dprintk("%s: Fore Channel : max_rqst_sz=%u max_resp_sz=%u " | |
8e0d46e1 | 9017 | "max_ops=%u max_reqs=%u\n", |
fc931582 AA |
9018 | __func__, |
9019 | args->fc_attrs.max_rqst_sz, args->fc_attrs.max_resp_sz, | |
8e0d46e1 | 9020 | args->fc_attrs.max_ops, args->fc_attrs.max_reqs); |
fc931582 AA |
9021 | |
9022 | /* Back channel attributes */ | |
6b26cc8c CL |
9023 | args->bc_attrs.max_rqst_sz = max_bc_payload; |
9024 | args->bc_attrs.max_resp_sz = max_bc_payload; | |
fc931582 AA |
9025 | args->bc_attrs.max_resp_sz_cached = 0; |
9026 | args->bc_attrs.max_ops = NFS4_MAX_BACK_CHANNEL_OPS; | |
62421cd9 | 9027 | args->bc_attrs.max_reqs = max_t(unsigned short, max_session_cb_slots, 1); |
7402a4fe TM |
9028 | if (args->bc_attrs.max_reqs > max_bc_slots) |
9029 | args->bc_attrs.max_reqs = max_bc_slots; | |
fc931582 AA |
9030 | |
9031 | dprintk("%s: Back Channel : max_rqst_sz=%u max_resp_sz=%u " | |
9032 | "max_resp_sz_cached=%u max_ops=%u max_reqs=%u\n", | |
9033 | __func__, | |
9034 | args->bc_attrs.max_rqst_sz, args->bc_attrs.max_resp_sz, | |
9035 | args->bc_attrs.max_resp_sz_cached, args->bc_attrs.max_ops, | |
9036 | args->bc_attrs.max_reqs); | |
9037 | } | |
9038 | ||
79969dd1 TM |
9039 | static int nfs4_verify_fore_channel_attrs(struct nfs41_create_session_args *args, |
9040 | struct nfs41_create_session_res *res) | |
8d35301d | 9041 | { |
43c2e885 | 9042 | struct nfs4_channel_attrs *sent = &args->fc_attrs; |
79969dd1 | 9043 | struct nfs4_channel_attrs *rcvd = &res->fc_attrs; |
43c2e885 | 9044 | |
43c2e885 BF |
9045 | if (rcvd->max_resp_sz > sent->max_resp_sz) |
9046 | return -EINVAL; | |
9047 | /* | |
9048 | * Our requested max_ops is the minimum we need; we're not | |
9049 | * prepared to break up compounds into smaller pieces than that. | |
9050 | * So, no point even trying to continue if the server won't | |
9051 | * cooperate: | |
9052 | */ | |
9053 | if (rcvd->max_ops < sent->max_ops) | |
9054 | return -EINVAL; | |
9055 | if (rcvd->max_reqs == 0) | |
9056 | return -EINVAL; | |
b4b9a0c1 VG |
9057 | if (rcvd->max_reqs > NFS4_MAX_SLOT_TABLE) |
9058 | rcvd->max_reqs = NFS4_MAX_SLOT_TABLE; | |
43c2e885 | 9059 | return 0; |
8d35301d AA |
9060 | } |
9061 | ||
79969dd1 TM |
9062 | static int nfs4_verify_back_channel_attrs(struct nfs41_create_session_args *args, |
9063 | struct nfs41_create_session_res *res) | |
43c2e885 BF |
9064 | { |
9065 | struct nfs4_channel_attrs *sent = &args->bc_attrs; | |
79969dd1 | 9066 | struct nfs4_channel_attrs *rcvd = &res->bc_attrs; |
8d35301d | 9067 | |
b1c0df5f TM |
9068 | if (!(res->flags & SESSION4_BACK_CHAN)) |
9069 | goto out; | |
43c2e885 BF |
9070 | if (rcvd->max_rqst_sz > sent->max_rqst_sz) |
9071 | return -EINVAL; | |
9072 | if (rcvd->max_resp_sz < sent->max_resp_sz) | |
9073 | return -EINVAL; | |
9074 | if (rcvd->max_resp_sz_cached > sent->max_resp_sz_cached) | |
9075 | return -EINVAL; | |
5405fc44 | 9076 | if (rcvd->max_ops > sent->max_ops) |
43c2e885 | 9077 | return -EINVAL; |
5405fc44 | 9078 | if (rcvd->max_reqs > sent->max_reqs) |
43c2e885 | 9079 | return -EINVAL; |
b1c0df5f | 9080 | out: |
43c2e885 BF |
9081 | return 0; |
9082 | } | |
8d35301d | 9083 | |
8d35301d | 9084 | static int nfs4_verify_channel_attrs(struct nfs41_create_session_args *args, |
79969dd1 | 9085 | struct nfs41_create_session_res *res) |
8d35301d | 9086 | { |
43c2e885 | 9087 | int ret; |
8d35301d | 9088 | |
79969dd1 | 9089 | ret = nfs4_verify_fore_channel_attrs(args, res); |
43c2e885 BF |
9090 | if (ret) |
9091 | return ret; | |
79969dd1 TM |
9092 | return nfs4_verify_back_channel_attrs(args, res); |
9093 | } | |
9094 | ||
9095 | static void nfs4_update_session(struct nfs4_session *session, | |
9096 | struct nfs41_create_session_res *res) | |
9097 | { | |
9098 | nfs4_copy_sessionid(&session->sess_id, &res->sessionid); | |
e11259f9 TM |
9099 | /* Mark client id and session as being confirmed */ |
9100 | session->clp->cl_exchange_flags |= EXCHGID4_FLAG_CONFIRMED_R; | |
9101 | set_bit(NFS4_SESSION_ESTABLISHED, &session->session_state); | |
79969dd1 TM |
9102 | session->flags = res->flags; |
9103 | memcpy(&session->fc_attrs, &res->fc_attrs, sizeof(session->fc_attrs)); | |
b1c0df5f TM |
9104 | if (res->flags & SESSION4_BACK_CHAN) |
9105 | memcpy(&session->bc_attrs, &res->bc_attrs, | |
9106 | sizeof(session->bc_attrs)); | |
8d35301d AA |
9107 | } |
9108 | ||
848f5bda | 9109 | static int _nfs4_proc_create_session(struct nfs_client *clp, |
a52458b4 | 9110 | const struct cred *cred) |
fc931582 AA |
9111 | { |
9112 | struct nfs4_session *session = clp->cl_session; | |
9113 | struct nfs41_create_session_args args = { | |
9114 | .client = clp, | |
79969dd1 TM |
9115 | .clientid = clp->cl_clientid, |
9116 | .seqid = clp->cl_seqid, | |
fc931582 AA |
9117 | .cb_program = NFS4_CALLBACK, |
9118 | }; | |
79969dd1 TM |
9119 | struct nfs41_create_session_res res; |
9120 | ||
fc931582 AA |
9121 | struct rpc_message msg = { |
9122 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_CREATE_SESSION], | |
9123 | .rpc_argp = &args, | |
9124 | .rpc_resp = &res, | |
848f5bda | 9125 | .rpc_cred = cred, |
fc931582 AA |
9126 | }; |
9127 | int status; | |
9128 | ||
6b26cc8c | 9129 | nfs4_init_channel_attrs(&args, clp->cl_rpcclient); |
0f91421e | 9130 | args.flags = (SESSION4_PERSIST | SESSION4_BACK_CHAN); |
fc931582 | 9131 | |
5a0c257f N |
9132 | status = rpc_call_sync(session->clp->cl_rpcclient, &msg, |
9133 | RPC_TASK_TIMEOUT | RPC_TASK_NO_ROUND_ROBIN); | |
c6d01c6f | 9134 | trace_nfs4_create_session(clp, status); |
fc931582 | 9135 | |
b519d408 TM |
9136 | switch (status) { |
9137 | case -NFS4ERR_STALE_CLIENTID: | |
9138 | case -NFS4ERR_DELAY: | |
9139 | case -ETIMEDOUT: | |
9140 | case -EACCES: | |
9141 | case -EAGAIN: | |
9142 | goto out; | |
8b98a532 | 9143 | } |
b519d408 TM |
9144 | |
9145 | clp->cl_seqid++; | |
43095d39 | 9146 | if (!status) { |
8d35301d | 9147 | /* Verify the session's negotiated channel_attrs values */ |
79969dd1 | 9148 | status = nfs4_verify_channel_attrs(&args, &res); |
fc931582 | 9149 | /* Increment the clientid slot sequence id */ |
79969dd1 TM |
9150 | if (status) |
9151 | goto out; | |
9152 | nfs4_update_session(session, &res); | |
fc931582 | 9153 | } |
79969dd1 | 9154 | out: |
fc931582 AA |
9155 | return status; |
9156 | } | |
9157 | ||
9158 | /* | |
9159 | * Issues a CREATE_SESSION operation to the server. | |
9160 | * It is the responsibility of the caller to verify the session is | |
9161 | * expired before calling this routine. | |
9162 | */ | |
a52458b4 | 9163 | int nfs4_proc_create_session(struct nfs_client *clp, const struct cred *cred) |
fc931582 AA |
9164 | { |
9165 | int status; | |
9166 | unsigned *ptr; | |
fc931582 AA |
9167 | struct nfs4_session *session = clp->cl_session; |
9168 | ||
9169 | dprintk("--> %s clp=%p session=%p\n", __func__, clp, session); | |
9170 | ||
848f5bda | 9171 | status = _nfs4_proc_create_session(clp, cred); |
fc931582 AA |
9172 | if (status) |
9173 | goto out; | |
9174 | ||
aacd5537 AA |
9175 | /* Init or reset the session slot tables */ |
9176 | status = nfs4_setup_session_slot_tables(session); | |
9177 | dprintk("slot table setup returned %d\n", status); | |
fc931582 AA |
9178 | if (status) |
9179 | goto out; | |
9180 | ||
9181 | ptr = (unsigned *)&session->sess_id.data[0]; | |
9182 | dprintk("%s client>seqid %d sessionid %u:%u:%u:%u\n", __func__, | |
9183 | clp->cl_seqid, ptr[0], ptr[1], ptr[2], ptr[3]); | |
fc931582 AA |
9184 | out: |
9185 | dprintk("<-- %s\n", __func__); | |
9186 | return status; | |
9187 | } | |
9188 | ||
0f3e66c6 AA |
9189 | /* |
9190 | * Issue the over-the-wire RPC DESTROY_SESSION. | |
9191 | * The caller must serialize access to this routine. | |
9192 | */ | |
848f5bda | 9193 | int nfs4_proc_destroy_session(struct nfs4_session *session, |
a52458b4 | 9194 | const struct cred *cred) |
0f3e66c6 | 9195 | { |
848f5bda TM |
9196 | struct rpc_message msg = { |
9197 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_DESTROY_SESSION], | |
9198 | .rpc_argp = session, | |
9199 | .rpc_cred = cred, | |
9200 | }; | |
0f3e66c6 | 9201 | int status = 0; |
0f3e66c6 AA |
9202 | |
9203 | dprintk("--> nfs4_proc_destroy_session\n"); | |
9204 | ||
9205 | /* session is still being setup */ | |
e11259f9 TM |
9206 | if (!test_and_clear_bit(NFS4_SESSION_ESTABLISHED, &session->session_state)) |
9207 | return 0; | |
0f3e66c6 | 9208 | |
5a0c257f N |
9209 | status = rpc_call_sync(session->clp->cl_rpcclient, &msg, |
9210 | RPC_TASK_TIMEOUT | RPC_TASK_NO_ROUND_ROBIN); | |
c6d01c6f | 9211 | trace_nfs4_destroy_session(session->clp, status); |
0f3e66c6 AA |
9212 | |
9213 | if (status) | |
08106ac7 | 9214 | dprintk("NFS: Got error %d from the server on DESTROY_SESSION. " |
0f3e66c6 AA |
9215 | "Session has been destroyed regardless...\n", status); |
9216 | ||
9217 | dprintk("<-- nfs4_proc_destroy_session\n"); | |
9218 | return status; | |
9219 | } | |
9220 | ||
fc01cea9 AA |
9221 | /* |
9222 | * Renew the cl_session lease. | |
9223 | */ | |
d5f8d3fe TM |
9224 | struct nfs4_sequence_data { |
9225 | struct nfs_client *clp; | |
9226 | struct nfs4_sequence_args args; | |
9227 | struct nfs4_sequence_res res; | |
9228 | }; | |
9229 | ||
dc96aef9 AB |
9230 | static void nfs41_sequence_release(void *data) |
9231 | { | |
d5f8d3fe TM |
9232 | struct nfs4_sequence_data *calldata = data; |
9233 | struct nfs_client *clp = calldata->clp; | |
dc96aef9 | 9234 | |
212bf41d | 9235 | if (refcount_read(&clp->cl_count) > 1) |
7135840f AB |
9236 | nfs4_schedule_state_renewal(clp); |
9237 | nfs_put_client(clp); | |
d5f8d3fe | 9238 | kfree(calldata); |
dc96aef9 AB |
9239 | } |
9240 | ||
aa5190d0 TM |
9241 | static int nfs41_sequence_handle_errors(struct rpc_task *task, struct nfs_client *clp) |
9242 | { | |
9243 | switch(task->tk_status) { | |
9244 | case -NFS4ERR_DELAY: | |
aa5190d0 TM |
9245 | rpc_delay(task, NFS4_POLL_RETRY_MAX); |
9246 | return -EAGAIN; | |
9247 | default: | |
0400a6b0 | 9248 | nfs4_schedule_lease_recovery(clp); |
aa5190d0 TM |
9249 | } |
9250 | return 0; | |
9251 | } | |
9252 | ||
dc96aef9 | 9253 | static void nfs41_sequence_call_done(struct rpc_task *task, void *data) |
fc01cea9 | 9254 | { |
d5f8d3fe TM |
9255 | struct nfs4_sequence_data *calldata = data; |
9256 | struct nfs_client *clp = calldata->clp; | |
fc01cea9 | 9257 | |
14516c3a TM |
9258 | if (!nfs41_sequence_done(task, task->tk_msg.rpc_resp)) |
9259 | return; | |
fc01cea9 | 9260 | |
c6d01c6f | 9261 | trace_nfs4_sequence(clp, task->tk_status); |
fc01cea9 AA |
9262 | if (task->tk_status < 0) { |
9263 | dprintk("%s ERROR %d\n", __func__, task->tk_status); | |
212bf41d | 9264 | if (refcount_read(&clp->cl_count) == 1) |
7135840f | 9265 | goto out; |
fc01cea9 | 9266 | |
aa5190d0 TM |
9267 | if (nfs41_sequence_handle_errors(task, clp) == -EAGAIN) { |
9268 | rpc_restart_call_prepare(task); | |
fc01cea9 AA |
9269 | return; |
9270 | } | |
9271 | } | |
fc01cea9 | 9272 | dprintk("%s rpc_cred %p\n", __func__, task->tk_msg.rpc_cred); |
7135840f | 9273 | out: |
fc01cea9 AA |
9274 | dprintk("<-- %s\n", __func__); |
9275 | } | |
9276 | ||
9277 | static void nfs41_sequence_prepare(struct rpc_task *task, void *data) | |
9278 | { | |
d5f8d3fe TM |
9279 | struct nfs4_sequence_data *calldata = data; |
9280 | struct nfs_client *clp = calldata->clp; | |
fc01cea9 AA |
9281 | struct nfs4_sequence_args *args; |
9282 | struct nfs4_sequence_res *res; | |
9283 | ||
fc01cea9 AA |
9284 | args = task->tk_msg.rpc_argp; |
9285 | res = task->tk_msg.rpc_resp; | |
9286 | ||
7981c8a6 | 9287 | nfs4_setup_sequence(clp, args, res, task); |
fc01cea9 AA |
9288 | } |
9289 | ||
9290 | static const struct rpc_call_ops nfs41_sequence_ops = { | |
9291 | .rpc_call_done = nfs41_sequence_call_done, | |
9292 | .rpc_call_prepare = nfs41_sequence_prepare, | |
dc96aef9 | 9293 | .rpc_release = nfs41_sequence_release, |
fc01cea9 AA |
9294 | }; |
9295 | ||
8fe72bac | 9296 | static struct rpc_task *_nfs41_proc_sequence(struct nfs_client *clp, |
a52458b4 | 9297 | const struct cred *cred, |
3be0f80b | 9298 | struct nfs4_slot *slot, |
8fe72bac | 9299 | bool is_privileged) |
fc01cea9 | 9300 | { |
d5f8d3fe | 9301 | struct nfs4_sequence_data *calldata; |
fc01cea9 AA |
9302 | struct rpc_message msg = { |
9303 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SEQUENCE], | |
9304 | .rpc_cred = cred, | |
9305 | }; | |
71ac6da9 TM |
9306 | struct rpc_task_setup task_setup_data = { |
9307 | .rpc_client = clp->cl_rpcclient, | |
9308 | .rpc_message = &msg, | |
8fe72bac | 9309 | .callback_ops = &nfs41_sequence_ops, |
85e39fee | 9310 | .flags = RPC_TASK_ASYNC | RPC_TASK_TIMEOUT | RPC_TASK_MOVEABLE, |
71ac6da9 | 9311 | }; |
3be0f80b | 9312 | struct rpc_task *ret; |
fc01cea9 | 9313 | |
3be0f80b | 9314 | ret = ERR_PTR(-EIO); |
212bf41d | 9315 | if (!refcount_inc_not_zero(&clp->cl_count)) |
3be0f80b TM |
9316 | goto out_err; |
9317 | ||
9318 | ret = ERR_PTR(-ENOMEM); | |
dfb4f309 | 9319 | calldata = kzalloc(sizeof(*calldata), GFP_NOFS); |
3be0f80b TM |
9320 | if (calldata == NULL) |
9321 | goto out_put_clp; | |
fba83f34 | 9322 | nfs4_init_sequence(&calldata->args, &calldata->res, 0, is_privileged); |
3be0f80b | 9323 | nfs4_sequence_attach_slot(&calldata->args, &calldata->res, slot); |
d5f8d3fe TM |
9324 | msg.rpc_argp = &calldata->args; |
9325 | msg.rpc_resp = &calldata->res; | |
9326 | calldata->clp = clp; | |
71ac6da9 | 9327 | task_setup_data.callback_data = calldata; |
fc01cea9 | 9328 | |
3be0f80b TM |
9329 | ret = rpc_run_task(&task_setup_data); |
9330 | if (IS_ERR(ret)) | |
9331 | goto out_err; | |
9332 | return ret; | |
9333 | out_put_clp: | |
9334 | nfs_put_client(clp); | |
9335 | out_err: | |
9336 | nfs41_release_slot(slot); | |
9337 | return ret; | |
71ac6da9 TM |
9338 | } |
9339 | ||
a52458b4 | 9340 | static int nfs41_proc_async_sequence(struct nfs_client *clp, const struct cred *cred, unsigned renew_flags) |
71ac6da9 TM |
9341 | { |
9342 | struct rpc_task *task; | |
9343 | int ret = 0; | |
9344 | ||
2f60ea6b | 9345 | if ((renew_flags & NFS4_RENEW_TIMEOUT) == 0) |
d1f456b0 | 9346 | return -EAGAIN; |
3be0f80b | 9347 | task = _nfs41_proc_sequence(clp, cred, NULL, false); |
71ac6da9 TM |
9348 | if (IS_ERR(task)) |
9349 | ret = PTR_ERR(task); | |
9350 | else | |
bf294b41 | 9351 | rpc_put_task_async(task); |
71ac6da9 TM |
9352 | dprintk("<-- %s status=%d\n", __func__, ret); |
9353 | return ret; | |
9354 | } | |
9355 | ||
a52458b4 | 9356 | static int nfs4_proc_sequence(struct nfs_client *clp, const struct cred *cred) |
71ac6da9 TM |
9357 | { |
9358 | struct rpc_task *task; | |
9359 | int ret; | |
9360 | ||
3be0f80b | 9361 | task = _nfs41_proc_sequence(clp, cred, NULL, true); |
71ac6da9 TM |
9362 | if (IS_ERR(task)) { |
9363 | ret = PTR_ERR(task); | |
9364 | goto out; | |
9365 | } | |
9366 | ret = rpc_wait_for_completion_task(task); | |
be824167 | 9367 | if (!ret) |
71ac6da9 TM |
9368 | ret = task->tk_status; |
9369 | rpc_put_task(task); | |
9370 | out: | |
9371 | dprintk("<-- %s status=%d\n", __func__, ret); | |
9372 | return ret; | |
fc01cea9 AA |
9373 | } |
9374 | ||
fce5c838 RL |
9375 | struct nfs4_reclaim_complete_data { |
9376 | struct nfs_client *clp; | |
9377 | struct nfs41_reclaim_complete_args arg; | |
9378 | struct nfs41_reclaim_complete_res res; | |
9379 | }; | |
9380 | ||
9381 | static void nfs4_reclaim_complete_prepare(struct rpc_task *task, void *data) | |
9382 | { | |
9383 | struct nfs4_reclaim_complete_data *calldata = data; | |
9384 | ||
7981c8a6 | 9385 | nfs4_setup_sequence(calldata->clp, |
d9afbd1b TM |
9386 | &calldata->arg.seq_args, |
9387 | &calldata->res.seq_res, | |
9388 | task); | |
fce5c838 RL |
9389 | } |
9390 | ||
aa5190d0 TM |
9391 | static int nfs41_reclaim_complete_handle_errors(struct rpc_task *task, struct nfs_client *clp) |
9392 | { | |
9393 | switch(task->tk_status) { | |
9394 | case 0: | |
57174593 | 9395 | wake_up_all(&clp->cl_lock_waitq); |
df561f66 | 9396 | fallthrough; |
aa5190d0 TM |
9397 | case -NFS4ERR_COMPLETE_ALREADY: |
9398 | case -NFS4ERR_WRONG_CRED: /* What to do here? */ | |
9399 | break; | |
9400 | case -NFS4ERR_DELAY: | |
aa5190d0 | 9401 | rpc_delay(task, NFS4_POLL_RETRY_MAX); |
df561f66 | 9402 | fallthrough; |
a8a4ae3a | 9403 | case -NFS4ERR_RETRY_UNCACHED_REP: |
aa5190d0 | 9404 | return -EAGAIN; |
0048fdd0 TM |
9405 | case -NFS4ERR_BADSESSION: |
9406 | case -NFS4ERR_DEADSESSION: | |
9407 | case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION: | |
0048fdd0 | 9408 | break; |
aa5190d0 | 9409 | default: |
0400a6b0 | 9410 | nfs4_schedule_lease_recovery(clp); |
aa5190d0 TM |
9411 | } |
9412 | return 0; | |
9413 | } | |
9414 | ||
fce5c838 RL |
9415 | static void nfs4_reclaim_complete_done(struct rpc_task *task, void *data) |
9416 | { | |
9417 | struct nfs4_reclaim_complete_data *calldata = data; | |
9418 | struct nfs_client *clp = calldata->clp; | |
9419 | struct nfs4_sequence_res *res = &calldata->res.seq_res; | |
9420 | ||
9421 | dprintk("--> %s\n", __func__); | |
14516c3a TM |
9422 | if (!nfs41_sequence_done(task, res)) |
9423 | return; | |
fce5c838 | 9424 | |
c6d01c6f | 9425 | trace_nfs4_reclaim_complete(clp, task->tk_status); |
aa5190d0 TM |
9426 | if (nfs41_reclaim_complete_handle_errors(task, clp) == -EAGAIN) { |
9427 | rpc_restart_call_prepare(task); | |
9428 | return; | |
9429 | } | |
fce5c838 RL |
9430 | dprintk("<-- %s\n", __func__); |
9431 | } | |
9432 | ||
9433 | static void nfs4_free_reclaim_complete_data(void *data) | |
9434 | { | |
9435 | struct nfs4_reclaim_complete_data *calldata = data; | |
9436 | ||
9437 | kfree(calldata); | |
9438 | } | |
9439 | ||
9440 | static const struct rpc_call_ops nfs4_reclaim_complete_call_ops = { | |
9441 | .rpc_call_prepare = nfs4_reclaim_complete_prepare, | |
9442 | .rpc_call_done = nfs4_reclaim_complete_done, | |
9443 | .rpc_release = nfs4_free_reclaim_complete_data, | |
9444 | }; | |
9445 | ||
9446 | /* | |
9447 | * Issue a global reclaim complete. | |
9448 | */ | |
965e9c23 | 9449 | static int nfs41_proc_reclaim_complete(struct nfs_client *clp, |
a52458b4 | 9450 | const struct cred *cred) |
fce5c838 RL |
9451 | { |
9452 | struct nfs4_reclaim_complete_data *calldata; | |
fce5c838 RL |
9453 | struct rpc_message msg = { |
9454 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RECLAIM_COMPLETE], | |
965e9c23 | 9455 | .rpc_cred = cred, |
fce5c838 RL |
9456 | }; |
9457 | struct rpc_task_setup task_setup_data = { | |
9458 | .rpc_client = clp->cl_rpcclient, | |
9459 | .rpc_message = &msg, | |
9460 | .callback_ops = &nfs4_reclaim_complete_call_ops, | |
4c952e3d | 9461 | .flags = RPC_TASK_NO_ROUND_ROBIN, |
fce5c838 RL |
9462 | }; |
9463 | int status = -ENOMEM; | |
9464 | ||
9465 | dprintk("--> %s\n", __func__); | |
8535b2be | 9466 | calldata = kzalloc(sizeof(*calldata), GFP_NOFS); |
fce5c838 RL |
9467 | if (calldata == NULL) |
9468 | goto out; | |
9469 | calldata->clp = clp; | |
9470 | calldata->arg.one_fs = 0; | |
fce5c838 | 9471 | |
fba83f34 | 9472 | nfs4_init_sequence(&calldata->arg.seq_args, &calldata->res.seq_res, 0, 1); |
fce5c838 RL |
9473 | msg.rpc_argp = &calldata->arg; |
9474 | msg.rpc_resp = &calldata->res; | |
9475 | task_setup_data.callback_data = calldata; | |
4c952e3d | 9476 | status = nfs4_call_sync_custom(&task_setup_data); |
fce5c838 RL |
9477 | out: |
9478 | dprintk("<-- %s status=%d\n", __func__, status); | |
9479 | return status; | |
9480 | } | |
b1f69b75 AA |
9481 | |
9482 | static void | |
9483 | nfs4_layoutget_prepare(struct rpc_task *task, void *calldata) | |
9484 | { | |
9485 | struct nfs4_layoutget *lgp = calldata; | |
c31663d4 | 9486 | struct nfs_server *server = NFS_SERVER(lgp->args.inode); |
b1f69b75 AA |
9487 | |
9488 | dprintk("--> %s\n", __func__); | |
7981c8a6 | 9489 | nfs4_setup_sequence(server->nfs_client, &lgp->args.seq_args, |
183d9e7b JL |
9490 | &lgp->res.seq_res, task); |
9491 | dprintk("<-- %s\n", __func__); | |
b1f69b75 AA |
9492 | } |
9493 | ||
9494 | static void nfs4_layoutget_done(struct rpc_task *task, void *calldata) | |
9495 | { | |
9496 | struct nfs4_layoutget *lgp = calldata; | |
183d9e7b JL |
9497 | |
9498 | dprintk("--> %s\n", __func__); | |
2e80dbe7 | 9499 | nfs41_sequence_process(task, &lgp->res.seq_res); |
183d9e7b JL |
9500 | dprintk("<-- %s\n", __func__); |
9501 | } | |
9502 | ||
9503 | static int | |
9504 | nfs4_layoutget_handle_exception(struct rpc_task *task, | |
9505 | struct nfs4_layoutget *lgp, struct nfs4_exception *exception) | |
9506 | { | |
ee314c2a TM |
9507 | struct inode *inode = lgp->args.inode; |
9508 | struct nfs_server *server = NFS_SERVER(inode); | |
b4e89bcb | 9509 | struct pnfs_layout_hdr *lo = lgp->lo; |
e85d7ee4 TM |
9510 | int nfs4err = task->tk_status; |
9511 | int err, status = 0; | |
f7db0b28 | 9512 | LIST_HEAD(head); |
b1f69b75 | 9513 | |
ed7e5423 | 9514 | dprintk("--> %s tk_status => %d\n", __func__, -task->tk_status); |
b1f69b75 | 9515 | |
2dbf8dff TM |
9516 | nfs4_sequence_free_slot(&lgp->res.seq_res); |
9517 | ||
e85d7ee4 | 9518 | switch (nfs4err) { |
b1f69b75 | 9519 | case 0: |
ee314c2a | 9520 | goto out; |
7c1e6e58 PT |
9521 | |
9522 | /* | |
9523 | * NFS4ERR_LAYOUTUNAVAILABLE means we are not supposed to use pnfs | |
9524 | * on the file. set tk_status to -ENODATA to tell upper layer to | |
9525 | * retry go inband. | |
9526 | */ | |
9527 | case -NFS4ERR_LAYOUTUNAVAILABLE: | |
183d9e7b | 9528 | status = -ENODATA; |
7c1e6e58 | 9529 | goto out; |
21b874c8 TM |
9530 | /* |
9531 | * NFS4ERR_BADLAYOUT means the MDS cannot return a layout of | |
9532 | * length lgp->args.minlength != 0 (see RFC5661 section 18.43.3). | |
9533 | */ | |
9534 | case -NFS4ERR_BADLAYOUT: | |
183d9e7b JL |
9535 | status = -EOVERFLOW; |
9536 | goto out; | |
ed7e5423 BH |
9537 | /* |
9538 | * NFS4ERR_LAYOUTTRYLATER is a conflict with another client | |
21b874c8 TM |
9539 | * (or clients) writing to the same RAID stripe except when |
9540 | * the minlength argument is 0 (see RFC5661 section 18.43.3). | |
183d9e7b JL |
9541 | * |
9542 | * Treat it like we would RECALLCONFLICT -- we retry for a little | |
9543 | * while, and then eventually give up. | |
ed7e5423 | 9544 | */ |
b1f69b75 | 9545 | case -NFS4ERR_LAYOUTTRYLATER: |
183d9e7b JL |
9546 | if (lgp->args.minlength == 0) { |
9547 | status = -EOVERFLOW; | |
9548 | goto out; | |
ed7e5423 | 9549 | } |
e85d7ee4 TM |
9550 | status = -EBUSY; |
9551 | break; | |
183d9e7b | 9552 | case -NFS4ERR_RECALLCONFLICT: |
183d9e7b | 9553 | status = -ERECALLCONFLICT; |
e85d7ee4 | 9554 | break; |
26f47443 TM |
9555 | case -NFS4ERR_DELEG_REVOKED: |
9556 | case -NFS4ERR_ADMIN_REVOKED: | |
ee314c2a TM |
9557 | case -NFS4ERR_EXPIRED: |
9558 | case -NFS4ERR_BAD_STATEID: | |
183d9e7b | 9559 | exception->timeout = 0; |
ee314c2a | 9560 | spin_lock(&inode->i_lock); |
f7db0b28 TM |
9561 | /* If the open stateid was bad, then recover it. */ |
9562 | if (!lo || test_bit(NFS_LAYOUT_INVALID_STID, &lo->plh_flags) || | |
e8fa33a6 | 9563 | !nfs4_stateid_match_other(&lgp->args.stateid, &lo->plh_stateid)) { |
ee314c2a | 9564 | spin_unlock(&inode->i_lock); |
183d9e7b | 9565 | exception->state = lgp->args.ctx->state; |
26f47443 | 9566 | exception->stateid = &lgp->args.stateid; |
2259f960 TM |
9567 | break; |
9568 | } | |
f7db0b28 TM |
9569 | |
9570 | /* | |
9571 | * Mark the bad layout state as invalid, then retry | |
9572 | */ | |
668f455d | 9573 | pnfs_mark_layout_stateid_invalid(lo, &head); |
f7db0b28 | 9574 | spin_unlock(&inode->i_lock); |
1f18b82c | 9575 | nfs_commit_inode(inode, 0); |
f7db0b28 TM |
9576 | pnfs_free_lseg_list(&head); |
9577 | status = -EAGAIN; | |
9578 | goto out; | |
b1f69b75 | 9579 | } |
183d9e7b | 9580 | |
e85d7ee4 TM |
9581 | err = nfs4_handle_exception(server, nfs4err, exception); |
9582 | if (!status) { | |
9583 | if (exception->retry) | |
9584 | status = -EAGAIN; | |
9585 | else | |
9586 | status = err; | |
9587 | } | |
ee314c2a | 9588 | out: |
b1f69b75 | 9589 | dprintk("<-- %s\n", __func__); |
183d9e7b | 9590 | return status; |
b1f69b75 AA |
9591 | } |
9592 | ||
dacb452d | 9593 | size_t max_response_pages(struct nfs_server *server) |
8554116e IK |
9594 | { |
9595 | u32 max_resp_sz = server->nfs_client->cl_session->fc_attrs.max_resp_sz; | |
9596 | return nfs_page_array_len(0, max_resp_sz); | |
9597 | } | |
9598 | ||
b1f69b75 AA |
9599 | static void nfs4_layoutget_release(void *calldata) |
9600 | { | |
9601 | struct nfs4_layoutget *lgp = calldata; | |
9602 | ||
9603 | dprintk("--> %s\n", __func__); | |
bd171930 | 9604 | nfs4_sequence_free_slot(&lgp->res.seq_res); |
29a8bfe5 | 9605 | pnfs_layoutget_free(lgp); |
b1f69b75 AA |
9606 | dprintk("<-- %s\n", __func__); |
9607 | } | |
9608 | ||
9609 | static const struct rpc_call_ops nfs4_layoutget_call_ops = { | |
9610 | .rpc_call_prepare = nfs4_layoutget_prepare, | |
9611 | .rpc_call_done = nfs4_layoutget_done, | |
9612 | .rpc_release = nfs4_layoutget_release, | |
9613 | }; | |
9614 | ||
a0b0a6e3 | 9615 | struct pnfs_layout_segment * |
dacb452d | 9616 | nfs4_proc_layoutget(struct nfs4_layoutget *lgp, long *timeout) |
b1f69b75 | 9617 | { |
a47970ff WAA |
9618 | struct inode *inode = lgp->args.inode; |
9619 | struct nfs_server *server = NFS_SERVER(inode); | |
b1f69b75 AA |
9620 | struct rpc_task *task; |
9621 | struct rpc_message msg = { | |
9622 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LAYOUTGET], | |
9623 | .rpc_argp = &lgp->args, | |
9624 | .rpc_resp = &lgp->res, | |
6ab59344 | 9625 | .rpc_cred = lgp->cred, |
b1f69b75 AA |
9626 | }; |
9627 | struct rpc_task_setup task_setup_data = { | |
9628 | .rpc_client = server->client, | |
9629 | .rpc_message = &msg, | |
9630 | .callback_ops = &nfs4_layoutget_call_ops, | |
9631 | .callback_data = lgp, | |
85e39fee OK |
9632 | .flags = RPC_TASK_ASYNC | RPC_TASK_CRED_NOREF | |
9633 | RPC_TASK_MOVEABLE, | |
b1f69b75 | 9634 | }; |
a0b0a6e3 | 9635 | struct pnfs_layout_segment *lseg = NULL; |
bc23676c TM |
9636 | struct nfs4_exception exception = { |
9637 | .inode = inode, | |
9638 | .timeout = *timeout, | |
9639 | }; | |
b1f69b75 AA |
9640 | int status = 0; |
9641 | ||
9642 | dprintk("--> %s\n", __func__); | |
9643 | ||
fba83f34 | 9644 | nfs4_init_sequence(&lgp->args.seq_args, &lgp->res.seq_res, 0, 0); |
a47970ff | 9645 | |
b1f69b75 | 9646 | task = rpc_run_task(&task_setup_data); |
6e47666e | 9647 | |
820bf85c | 9648 | status = rpc_wait_for_completion_task(task); |
2dbf8dff TM |
9649 | if (status != 0) |
9650 | goto out; | |
9651 | ||
18c0778a | 9652 | if (task->tk_status < 0) { |
183d9e7b JL |
9653 | status = nfs4_layoutget_handle_exception(task, lgp, &exception); |
9654 | *timeout = exception.timeout; | |
18c0778a TM |
9655 | } else if (lgp->res.layoutp->len == 0) { |
9656 | status = -EAGAIN; | |
9657 | *timeout = nfs4_update_delay(&exception.timeout); | |
2dbf8dff TM |
9658 | } else |
9659 | lseg = pnfs_layout_process(lgp); | |
9660 | out: | |
1037e6ea TM |
9661 | trace_nfs4_layoutget(lgp->args.ctx, |
9662 | &lgp->args.range, | |
9663 | &lgp->res.range, | |
48c9579a | 9664 | &lgp->res.stateid, |
1037e6ea | 9665 | status); |
183d9e7b | 9666 | |
b1f69b75 AA |
9667 | rpc_put_task(task); |
9668 | dprintk("<-- %s status=%d\n", __func__, status); | |
a0b0a6e3 TM |
9669 | if (status) |
9670 | return ERR_PTR(status); | |
9671 | return lseg; | |
b1f69b75 AA |
9672 | } |
9673 | ||
cbe82603 BH |
9674 | static void |
9675 | nfs4_layoutreturn_prepare(struct rpc_task *task, void *calldata) | |
9676 | { | |
9677 | struct nfs4_layoutreturn *lrp = calldata; | |
9678 | ||
9679 | dprintk("--> %s\n", __func__); | |
7981c8a6 | 9680 | nfs4_setup_sequence(lrp->clp, |
d9afbd1b TM |
9681 | &lrp->args.seq_args, |
9682 | &lrp->res.seq_res, | |
9683 | task); | |
c8bf7073 TM |
9684 | if (!pnfs_layout_is_valid(lrp->args.layout)) |
9685 | rpc_exit(task, 0); | |
cbe82603 BH |
9686 | } |
9687 | ||
9688 | static void nfs4_layoutreturn_done(struct rpc_task *task, void *calldata) | |
9689 | { | |
9690 | struct nfs4_layoutreturn *lrp = calldata; | |
9691 | struct nfs_server *server; | |
9692 | ||
9693 | dprintk("--> %s\n", __func__); | |
9694 | ||
2e80dbe7 | 9695 | if (!nfs41_sequence_process(task, &lrp->res.seq_res)) |
cbe82603 BH |
9696 | return; |
9697 | ||
6109bcf7 TM |
9698 | /* |
9699 | * Was there an RPC level error? Assume the call succeeded, | |
9700 | * and that we need to release the layout | |
9701 | */ | |
9702 | if (task->tk_rpc_status != 0 && RPC_WAS_SENT(task)) { | |
9703 | lrp->res.lrs_present = 0; | |
9704 | return; | |
9705 | } | |
9706 | ||
cbe82603 | 9707 | server = NFS_SERVER(lrp->args.inode); |
f22e5edd | 9708 | switch (task->tk_status) { |
ff90514e | 9709 | case -NFS4ERR_OLD_STATEID: |
30cb3ee2 | 9710 | if (nfs4_layout_refresh_old_stateid(&lrp->args.stateid, |
ecf84026 | 9711 | &lrp->args.range, |
ff90514e TM |
9712 | lrp->args.inode)) |
9713 | goto out_restart; | |
df561f66 | 9714 | fallthrough; |
f22e5edd TM |
9715 | default: |
9716 | task->tk_status = 0; | |
df561f66 | 9717 | fallthrough; |
f22e5edd TM |
9718 | case 0: |
9719 | break; | |
9720 | case -NFS4ERR_DELAY: | |
8478eaa1 | 9721 | if (nfs4_async_handle_error(task, server, NULL, NULL) != -EAGAIN) |
f22e5edd | 9722 | break; |
ff90514e | 9723 | goto out_restart; |
cbe82603 | 9724 | } |
cbe82603 | 9725 | dprintk("<-- %s\n", __func__); |
ff90514e TM |
9726 | return; |
9727 | out_restart: | |
9728 | task->tk_status = 0; | |
9729 | nfs4_sequence_free_slot(&lrp->res.seq_res); | |
9730 | rpc_restart_call_prepare(task); | |
cbe82603 BH |
9731 | } |
9732 | ||
9733 | static void nfs4_layoutreturn_release(void *calldata) | |
9734 | { | |
9735 | struct nfs4_layoutreturn *lrp = calldata; | |
849b286f | 9736 | struct pnfs_layout_hdr *lo = lrp->args.layout; |
cbe82603 BH |
9737 | |
9738 | dprintk("--> %s\n", __func__); | |
2a974425 | 9739 | pnfs_layoutreturn_free_lsegs(lo, &lrp->args.stateid, &lrp->args.range, |
68f74479 | 9740 | lrp->res.lrs_present ? &lrp->res.stateid : NULL); |
2e80dbe7 | 9741 | nfs4_sequence_free_slot(&lrp->res.seq_res); |
4d796d75 TM |
9742 | if (lrp->ld_private.ops && lrp->ld_private.ops->free) |
9743 | lrp->ld_private.ops->free(&lrp->ld_private); | |
2f065ddb TM |
9744 | pnfs_put_layout_hdr(lrp->args.layout); |
9745 | nfs_iput_and_deactive(lrp->inode); | |
44ea8dfc | 9746 | put_cred(lrp->cred); |
cbe82603 BH |
9747 | kfree(calldata); |
9748 | dprintk("<-- %s\n", __func__); | |
9749 | } | |
9750 | ||
9751 | static const struct rpc_call_ops nfs4_layoutreturn_call_ops = { | |
9752 | .rpc_call_prepare = nfs4_layoutreturn_prepare, | |
9753 | .rpc_call_done = nfs4_layoutreturn_done, | |
9754 | .rpc_release = nfs4_layoutreturn_release, | |
9755 | }; | |
9756 | ||
6c16605d | 9757 | int nfs4_proc_layoutreturn(struct nfs4_layoutreturn *lrp, bool sync) |
cbe82603 BH |
9758 | { |
9759 | struct rpc_task *task; | |
9760 | struct rpc_message msg = { | |
9761 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LAYOUTRETURN], | |
9762 | .rpc_argp = &lrp->args, | |
9763 | .rpc_resp = &lrp->res, | |
9556000d | 9764 | .rpc_cred = lrp->cred, |
cbe82603 BH |
9765 | }; |
9766 | struct rpc_task_setup task_setup_data = { | |
1771c577 | 9767 | .rpc_client = NFS_SERVER(lrp->args.inode)->client, |
cbe82603 BH |
9768 | .rpc_message = &msg, |
9769 | .callback_ops = &nfs4_layoutreturn_call_ops, | |
9770 | .callback_data = lrp, | |
85e39fee | 9771 | .flags = RPC_TASK_MOVEABLE, |
cbe82603 | 9772 | }; |
6c16605d | 9773 | int status = 0; |
cbe82603 | 9774 | |
99ade3c7 AE |
9775 | nfs4_state_protect(NFS_SERVER(lrp->args.inode)->nfs_client, |
9776 | NFS_SP4_MACH_CRED_PNFS_CLEANUP, | |
9777 | &task_setup_data.rpc_client, &msg); | |
9778 | ||
cbe82603 | 9779 | dprintk("--> %s\n", __func__); |
c3aba897 | 9780 | lrp->inode = nfs_igrab_and_active(lrp->args.inode); |
5a0ec8ac | 9781 | if (!sync) { |
5a0ec8ac TM |
9782 | if (!lrp->inode) { |
9783 | nfs4_layoutreturn_release(lrp); | |
9784 | return -EAGAIN; | |
9785 | } | |
9786 | task_setup_data.flags |= RPC_TASK_ASYNC; | |
9787 | } | |
c3aba897 TM |
9788 | if (!lrp->inode) |
9789 | nfs4_init_sequence(&lrp->args.seq_args, &lrp->res.seq_res, 1, | |
9790 | 1); | |
9791 | else | |
9792 | nfs4_init_sequence(&lrp->args.seq_args, &lrp->res.seq_res, 1, | |
9793 | 0); | |
cbe82603 BH |
9794 | task = rpc_run_task(&task_setup_data); |
9795 | if (IS_ERR(task)) | |
9796 | return PTR_ERR(task); | |
5a0ec8ac TM |
9797 | if (sync) |
9798 | status = task->tk_status; | |
48c9579a | 9799 | trace_nfs4_layoutreturn(lrp->args.inode, &lrp->args.stateid, status); |
cbe82603 BH |
9800 | dprintk("<-- %s status=%d\n", __func__, status); |
9801 | rpc_put_task(task); | |
9802 | return status; | |
9803 | } | |
9804 | ||
b1f69b75 | 9805 | static int |
cd5875fe TM |
9806 | _nfs4_proc_getdeviceinfo(struct nfs_server *server, |
9807 | struct pnfs_device *pdev, | |
a52458b4 | 9808 | const struct cred *cred) |
b1f69b75 AA |
9809 | { |
9810 | struct nfs4_getdeviceinfo_args args = { | |
9811 | .pdev = pdev, | |
4e590803 TM |
9812 | .notify_types = NOTIFY_DEVICEID4_CHANGE | |
9813 | NOTIFY_DEVICEID4_DELETE, | |
b1f69b75 AA |
9814 | }; |
9815 | struct nfs4_getdeviceinfo_res res = { | |
9816 | .pdev = pdev, | |
9817 | }; | |
9818 | struct rpc_message msg = { | |
9819 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GETDEVICEINFO], | |
9820 | .rpc_argp = &args, | |
9821 | .rpc_resp = &res, | |
cd5875fe | 9822 | .rpc_cred = cred, |
b1f69b75 AA |
9823 | }; |
9824 | int status; | |
9825 | ||
9826 | dprintk("--> %s\n", __func__); | |
7c513058 | 9827 | status = nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
4e590803 TM |
9828 | if (res.notification & ~args.notify_types) |
9829 | dprintk("%s: unsupported notification\n", __func__); | |
df52699e TM |
9830 | if (res.notification != args.notify_types) |
9831 | pdev->nocache = 1; | |
4e590803 | 9832 | |
cac1d3a2 TM |
9833 | trace_nfs4_getdeviceinfo(server, &pdev->dev_id, status); |
9834 | ||
b1f69b75 AA |
9835 | dprintk("<-- %s status=%d\n", __func__, status); |
9836 | ||
9837 | return status; | |
9838 | } | |
9839 | ||
cd5875fe TM |
9840 | int nfs4_proc_getdeviceinfo(struct nfs_server *server, |
9841 | struct pnfs_device *pdev, | |
a52458b4 | 9842 | const struct cred *cred) |
b1f69b75 AA |
9843 | { |
9844 | struct nfs4_exception exception = { }; | |
9845 | int err; | |
9846 | ||
9847 | do { | |
9848 | err = nfs4_handle_exception(server, | |
cd5875fe | 9849 | _nfs4_proc_getdeviceinfo(server, pdev, cred), |
b1f69b75 AA |
9850 | &exception); |
9851 | } while (exception.retry); | |
9852 | return err; | |
9853 | } | |
9854 | EXPORT_SYMBOL_GPL(nfs4_proc_getdeviceinfo); | |
9855 | ||
863a3c6c AA |
9856 | static void nfs4_layoutcommit_prepare(struct rpc_task *task, void *calldata) |
9857 | { | |
9858 | struct nfs4_layoutcommit_data *data = calldata; | |
9859 | struct nfs_server *server = NFS_SERVER(data->args.inode); | |
9860 | ||
7981c8a6 | 9861 | nfs4_setup_sequence(server->nfs_client, |
d9afbd1b TM |
9862 | &data->args.seq_args, |
9863 | &data->res.seq_res, | |
9864 | task); | |
863a3c6c AA |
9865 | } |
9866 | ||
9867 | static void | |
9868 | nfs4_layoutcommit_done(struct rpc_task *task, void *calldata) | |
9869 | { | |
9870 | struct nfs4_layoutcommit_data *data = calldata; | |
9871 | struct nfs_server *server = NFS_SERVER(data->args.inode); | |
9872 | ||
6ba7db34 | 9873 | if (!nfs41_sequence_done(task, &data->res.seq_res)) |
863a3c6c AA |
9874 | return; |
9875 | ||
9876 | switch (task->tk_status) { /* Just ignore these failures */ | |
e59d27e0 TM |
9877 | case -NFS4ERR_DELEG_REVOKED: /* layout was recalled */ |
9878 | case -NFS4ERR_BADIOMODE: /* no IOMODE_RW layout for range */ | |
9879 | case -NFS4ERR_BADLAYOUT: /* no layout */ | |
9880 | case -NFS4ERR_GRACE: /* loca_recalim always false */ | |
863a3c6c | 9881 | task->tk_status = 0; |
ffb81717 | 9882 | break; |
e59d27e0 | 9883 | case 0: |
e59d27e0 TM |
9884 | break; |
9885 | default: | |
8478eaa1 | 9886 | if (nfs4_async_handle_error(task, server, NULL, NULL) == -EAGAIN) { |
e59d27e0 TM |
9887 | rpc_restart_call_prepare(task); |
9888 | return; | |
9889 | } | |
9890 | } | |
863a3c6c AA |
9891 | } |
9892 | ||
9893 | static void nfs4_layoutcommit_release(void *calldata) | |
9894 | { | |
9895 | struct nfs4_layoutcommit_data *data = calldata; | |
9896 | ||
db29c089 | 9897 | pnfs_cleanup_layoutcommit(data); |
d8c951c3 TM |
9898 | nfs_post_op_update_inode_force_wcc(data->args.inode, |
9899 | data->res.fattr); | |
a52458b4 | 9900 | put_cred(data->cred); |
472e2594 | 9901 | nfs_iput_and_deactive(data->inode); |
863a3c6c AA |
9902 | kfree(data); |
9903 | } | |
9904 | ||
9905 | static const struct rpc_call_ops nfs4_layoutcommit_ops = { | |
9906 | .rpc_call_prepare = nfs4_layoutcommit_prepare, | |
9907 | .rpc_call_done = nfs4_layoutcommit_done, | |
9908 | .rpc_release = nfs4_layoutcommit_release, | |
9909 | }; | |
9910 | ||
9911 | int | |
ef311537 | 9912 | nfs4_proc_layoutcommit(struct nfs4_layoutcommit_data *data, bool sync) |
863a3c6c AA |
9913 | { |
9914 | struct rpc_message msg = { | |
9915 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LAYOUTCOMMIT], | |
9916 | .rpc_argp = &data->args, | |
9917 | .rpc_resp = &data->res, | |
9918 | .rpc_cred = data->cred, | |
9919 | }; | |
9920 | struct rpc_task_setup task_setup_data = { | |
9921 | .task = &data->task, | |
9922 | .rpc_client = NFS_CLIENT(data->args.inode), | |
9923 | .rpc_message = &msg, | |
9924 | .callback_ops = &nfs4_layoutcommit_ops, | |
9925 | .callback_data = data, | |
85e39fee | 9926 | .flags = RPC_TASK_MOVEABLE, |
863a3c6c AA |
9927 | }; |
9928 | struct rpc_task *task; | |
9929 | int status = 0; | |
9930 | ||
b4839ebe KM |
9931 | dprintk("NFS: initiating layoutcommit call. sync %d " |
9932 | "lbw: %llu inode %lu\n", sync, | |
863a3c6c AA |
9933 | data->args.lastbytewritten, |
9934 | data->args.inode->i_ino); | |
9935 | ||
472e2594 TM |
9936 | if (!sync) { |
9937 | data->inode = nfs_igrab_and_active(data->args.inode); | |
9938 | if (data->inode == NULL) { | |
9939 | nfs4_layoutcommit_release(data); | |
9940 | return -EAGAIN; | |
9941 | } | |
9942 | task_setup_data.flags = RPC_TASK_ASYNC; | |
9943 | } | |
fba83f34 | 9944 | nfs4_init_sequence(&data->args.seq_args, &data->res.seq_res, 1, 0); |
863a3c6c AA |
9945 | task = rpc_run_task(&task_setup_data); |
9946 | if (IS_ERR(task)) | |
9947 | return PTR_ERR(task); | |
472e2594 TM |
9948 | if (sync) |
9949 | status = task->tk_status; | |
48c9579a | 9950 | trace_nfs4_layoutcommit(data->args.inode, &data->args.stateid, status); |
863a3c6c AA |
9951 | dprintk("%s: status %d\n", __func__, status); |
9952 | rpc_put_task(task); | |
9953 | return status; | |
9954 | } | |
fca78d6d | 9955 | |
302fad7b | 9956 | /* |
97431204 AA |
9957 | * Use the state managment nfs_client cl_rpcclient, which uses krb5i (if |
9958 | * possible) as per RFC3530bis and RFC5661 Security Considerations sections | |
9959 | */ | |
fca78d6d BS |
9960 | static int |
9961 | _nfs41_proc_secinfo_no_name(struct nfs_server *server, struct nfs_fh *fhandle, | |
b1b3e136 WAA |
9962 | struct nfs_fsinfo *info, |
9963 | struct nfs4_secinfo_flavors *flavors, bool use_integrity) | |
fca78d6d BS |
9964 | { |
9965 | struct nfs41_secinfo_no_name_args args = { | |
9966 | .style = SECINFO_STYLE_CURRENT_FH, | |
9967 | }; | |
9968 | struct nfs4_secinfo_res res = { | |
9969 | .flavors = flavors, | |
9970 | }; | |
9971 | struct rpc_message msg = { | |
9972 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SECINFO_NO_NAME], | |
9973 | .rpc_argp = &args, | |
9974 | .rpc_resp = &res, | |
9975 | }; | |
cc15e24a AS |
9976 | struct nfs4_call_sync_data data = { |
9977 | .seq_server = server, | |
9978 | .seq_args = &args.seq_args, | |
9979 | .seq_res = &res.seq_res, | |
9980 | }; | |
9981 | struct rpc_task_setup task_setup = { | |
9982 | .rpc_client = server->client, | |
9983 | .rpc_message = &msg, | |
9984 | .callback_ops = server->nfs_client->cl_mvops->call_sync_ops, | |
9985 | .callback_data = &data, | |
9986 | .flags = RPC_TASK_NO_ROUND_ROBIN, | |
9987 | }; | |
a52458b4 | 9988 | const struct cred *cred = NULL; |
b1b3e136 WAA |
9989 | int status; |
9990 | ||
9991 | if (use_integrity) { | |
48bb6ec1 | 9992 | task_setup.rpc_client = server->nfs_client->cl_rpcclient; |
cc15e24a | 9993 | |
7cb852df WAA |
9994 | cred = nfs4_get_clid_cred(server->nfs_client); |
9995 | msg.rpc_cred = cred; | |
b1b3e136 WAA |
9996 | } |
9997 | ||
9998 | dprintk("--> %s\n", __func__); | |
cc15e24a AS |
9999 | nfs4_init_sequence(&args.seq_args, &res.seq_res, 0, 0); |
10000 | status = nfs4_call_sync_custom(&task_setup); | |
b1b3e136 WAA |
10001 | dprintk("<-- %s status=%d\n", __func__, status); |
10002 | ||
a52458b4 | 10003 | put_cred(cred); |
b1b3e136 WAA |
10004 | |
10005 | return status; | |
fca78d6d BS |
10006 | } |
10007 | ||
10008 | static int | |
10009 | nfs41_proc_secinfo_no_name(struct nfs_server *server, struct nfs_fh *fhandle, | |
10010 | struct nfs_fsinfo *info, struct nfs4_secinfo_flavors *flavors) | |
10011 | { | |
0688e64b TM |
10012 | struct nfs4_exception exception = { |
10013 | .interruptible = true, | |
10014 | }; | |
fca78d6d BS |
10015 | int err; |
10016 | do { | |
b1b3e136 WAA |
10017 | /* first try using integrity protection */ |
10018 | err = -NFS4ERR_WRONGSEC; | |
10019 | ||
10020 | /* try to use integrity protection with machine cred */ | |
10021 | if (_nfs4_is_integrity_protected(server->nfs_client)) | |
10022 | err = _nfs41_proc_secinfo_no_name(server, fhandle, info, | |
10023 | flavors, true); | |
10024 | ||
10025 | /* | |
10026 | * if unable to use integrity protection, or SECINFO with | |
10027 | * integrity protection returns NFS4ERR_WRONGSEC (which is | |
10028 | * disallowed by spec, but exists in deployed servers) use | |
10029 | * the current filesystem's rpc_client and the user cred. | |
10030 | */ | |
10031 | if (err == -NFS4ERR_WRONGSEC) | |
10032 | err = _nfs41_proc_secinfo_no_name(server, fhandle, info, | |
10033 | flavors, false); | |
10034 | ||
fca78d6d BS |
10035 | switch (err) { |
10036 | case 0: | |
10037 | case -NFS4ERR_WRONGSEC: | |
78b19bae | 10038 | case -ENOTSUPP: |
05e9cfb4 | 10039 | goto out; |
fca78d6d BS |
10040 | default: |
10041 | err = nfs4_handle_exception(server, err, &exception); | |
10042 | } | |
10043 | } while (exception.retry); | |
05e9cfb4 | 10044 | out: |
fca78d6d BS |
10045 | return err; |
10046 | } | |
10047 | ||
10048 | static int | |
10049 | nfs41_find_root_sec(struct nfs_server *server, struct nfs_fh *fhandle, | |
10050 | struct nfs_fsinfo *info) | |
10051 | { | |
10052 | int err; | |
10053 | struct page *page; | |
367156d9 | 10054 | rpc_authflavor_t flavor = RPC_AUTH_MAXFLAVOR; |
fca78d6d | 10055 | struct nfs4_secinfo_flavors *flavors; |
58a8cf12 WAA |
10056 | struct nfs4_secinfo4 *secinfo; |
10057 | int i; | |
fca78d6d BS |
10058 | |
10059 | page = alloc_page(GFP_KERNEL); | |
10060 | if (!page) { | |
10061 | err = -ENOMEM; | |
10062 | goto out; | |
10063 | } | |
10064 | ||
10065 | flavors = page_address(page); | |
10066 | err = nfs41_proc_secinfo_no_name(server, fhandle, info, flavors); | |
10067 | ||
10068 | /* | |
10069 | * Fall back on "guess and check" method if | |
10070 | * the server doesn't support SECINFO_NO_NAME | |
10071 | */ | |
78b19bae | 10072 | if (err == -NFS4ERR_WRONGSEC || err == -ENOTSUPP) { |
fca78d6d BS |
10073 | err = nfs4_find_root_sec(server, fhandle, info); |
10074 | goto out_freepage; | |
10075 | } | |
10076 | if (err) | |
10077 | goto out_freepage; | |
10078 | ||
58a8cf12 WAA |
10079 | for (i = 0; i < flavors->num_flavors; i++) { |
10080 | secinfo = &flavors->flavors[i]; | |
10081 | ||
10082 | switch (secinfo->flavor) { | |
10083 | case RPC_AUTH_NULL: | |
10084 | case RPC_AUTH_UNIX: | |
10085 | case RPC_AUTH_GSS: | |
10086 | flavor = rpcauth_get_pseudoflavor(secinfo->flavor, | |
10087 | &secinfo->flavor_info); | |
10088 | break; | |
10089 | default: | |
10090 | flavor = RPC_AUTH_MAXFLAVOR; | |
10091 | break; | |
10092 | } | |
10093 | ||
4d4b69dd WAA |
10094 | if (!nfs_auth_info_match(&server->auth_info, flavor)) |
10095 | flavor = RPC_AUTH_MAXFLAVOR; | |
10096 | ||
58a8cf12 WAA |
10097 | if (flavor != RPC_AUTH_MAXFLAVOR) { |
10098 | err = nfs4_lookup_root_sec(server, fhandle, | |
10099 | info, flavor); | |
10100 | if (!err) | |
10101 | break; | |
10102 | } | |
10103 | } | |
10104 | ||
10105 | if (flavor == RPC_AUTH_MAXFLAVOR) | |
10106 | err = -EPERM; | |
fca78d6d BS |
10107 | |
10108 | out_freepage: | |
10109 | put_page(page); | |
10110 | if (err == -EACCES) | |
10111 | return -EPERM; | |
10112 | out: | |
10113 | return err; | |
10114 | } | |
1cab0652 | 10115 | |
ab7cb0df TM |
10116 | static int _nfs41_test_stateid(struct nfs_server *server, |
10117 | nfs4_stateid *stateid, | |
a52458b4 | 10118 | const struct cred *cred) |
7d974794 BS |
10119 | { |
10120 | int status; | |
10121 | struct nfs41_test_stateid_args args = { | |
1cab0652 | 10122 | .stateid = stateid, |
7d974794 BS |
10123 | }; |
10124 | struct nfs41_test_stateid_res res; | |
10125 | struct rpc_message msg = { | |
10126 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_TEST_STATEID], | |
10127 | .rpc_argp = &args, | |
10128 | .rpc_resp = &res, | |
ab7cb0df | 10129 | .rpc_cred = cred, |
7d974794 | 10130 | }; |
3787d506 WAA |
10131 | struct rpc_clnt *rpc_client = server->client; |
10132 | ||
10133 | nfs4_state_protect(server->nfs_client, NFS_SP4_MACH_CRED_STATEID, | |
10134 | &rpc_client, &msg); | |
1cab0652 | 10135 | |
38527b15 | 10136 | dprintk("NFS call test_stateid %p\n", stateid); |
fba83f34 | 10137 | nfs4_init_sequence(&args.seq_args, &res.seq_res, 0, 1); |
3787d506 | 10138 | status = nfs4_call_sync_sequence(rpc_client, server, &msg, |
8fe72bac | 10139 | &args.seq_args, &res.seq_res); |
38527b15 CL |
10140 | if (status != NFS_OK) { |
10141 | dprintk("NFS reply test_stateid: failed, %d\n", status); | |
377e507d | 10142 | return status; |
38527b15 CL |
10143 | } |
10144 | dprintk("NFS reply test_stateid: succeeded, %d\n", -res.status); | |
377e507d | 10145 | return -res.status; |
7d974794 BS |
10146 | } |
10147 | ||
43912bbb TM |
10148 | static void nfs4_handle_delay_or_session_error(struct nfs_server *server, |
10149 | int err, struct nfs4_exception *exception) | |
10150 | { | |
10151 | exception->retry = 0; | |
10152 | switch(err) { | |
10153 | case -NFS4ERR_DELAY: | |
76e8a1bd | 10154 | case -NFS4ERR_RETRY_UNCACHED_REP: |
43912bbb TM |
10155 | nfs4_handle_exception(server, err, exception); |
10156 | break; | |
10157 | case -NFS4ERR_BADSESSION: | |
10158 | case -NFS4ERR_BADSLOT: | |
10159 | case -NFS4ERR_BAD_HIGH_SLOT: | |
10160 | case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION: | |
10161 | case -NFS4ERR_DEADSESSION: | |
10162 | nfs4_do_handle_exception(server, err, exception); | |
10163 | } | |
10164 | } | |
10165 | ||
38527b15 CL |
10166 | /** |
10167 | * nfs41_test_stateid - perform a TEST_STATEID operation | |
10168 | * | |
10169 | * @server: server / transport on which to perform the operation | |
10170 | * @stateid: state ID to test | |
ab7cb0df | 10171 | * @cred: credential |
38527b15 CL |
10172 | * |
10173 | * Returns NFS_OK if the server recognizes that "stateid" is valid. | |
10174 | * Otherwise a negative NFS4ERR value is returned if the operation | |
10175 | * failed or the state ID is not currently valid. | |
10176 | */ | |
ab7cb0df TM |
10177 | static int nfs41_test_stateid(struct nfs_server *server, |
10178 | nfs4_stateid *stateid, | |
a52458b4 | 10179 | const struct cred *cred) |
7d974794 | 10180 | { |
0688e64b TM |
10181 | struct nfs4_exception exception = { |
10182 | .interruptible = true, | |
10183 | }; | |
7d974794 BS |
10184 | int err; |
10185 | do { | |
ab7cb0df | 10186 | err = _nfs41_test_stateid(server, stateid, cred); |
43912bbb | 10187 | nfs4_handle_delay_or_session_error(server, err, &exception); |
7d974794 BS |
10188 | } while (exception.retry); |
10189 | return err; | |
10190 | } | |
9aeda35f | 10191 | |
7c1d5fae TM |
10192 | struct nfs_free_stateid_data { |
10193 | struct nfs_server *server; | |
10194 | struct nfs41_free_stateid_args args; | |
9aeda35f | 10195 | struct nfs41_free_stateid_res res; |
7c1d5fae TM |
10196 | }; |
10197 | ||
10198 | static void nfs41_free_stateid_prepare(struct rpc_task *task, void *calldata) | |
10199 | { | |
10200 | struct nfs_free_stateid_data *data = calldata; | |
7981c8a6 | 10201 | nfs4_setup_sequence(data->server->nfs_client, |
7c1d5fae TM |
10202 | &data->args.seq_args, |
10203 | &data->res.seq_res, | |
10204 | task); | |
10205 | } | |
10206 | ||
10207 | static void nfs41_free_stateid_done(struct rpc_task *task, void *calldata) | |
10208 | { | |
10209 | struct nfs_free_stateid_data *data = calldata; | |
10210 | ||
10211 | nfs41_sequence_done(task, &data->res.seq_res); | |
10212 | ||
10213 | switch (task->tk_status) { | |
10214 | case -NFS4ERR_DELAY: | |
8478eaa1 | 10215 | if (nfs4_async_handle_error(task, data->server, NULL, NULL) == -EAGAIN) |
7c1d5fae TM |
10216 | rpc_restart_call_prepare(task); |
10217 | } | |
10218 | } | |
10219 | ||
10220 | static void nfs41_free_stateid_release(void *calldata) | |
10221 | { | |
10222 | kfree(calldata); | |
10223 | } | |
10224 | ||
17f26b12 | 10225 | static const struct rpc_call_ops nfs41_free_stateid_ops = { |
7c1d5fae TM |
10226 | .rpc_call_prepare = nfs41_free_stateid_prepare, |
10227 | .rpc_call_done = nfs41_free_stateid_done, | |
10228 | .rpc_release = nfs41_free_stateid_release, | |
10229 | }; | |
10230 | ||
2f261020 AS |
10231 | /** |
10232 | * nfs41_free_stateid - perform a FREE_STATEID operation | |
10233 | * | |
10234 | * @server: server / transport on which to perform the operation | |
10235 | * @stateid: state ID to release | |
10236 | * @cred: credential | |
302fad7b | 10237 | * @privileged: set to true if this call needs to be privileged |
2f261020 AS |
10238 | * |
10239 | * Note: this function is always asynchronous. | |
10240 | */ | |
10241 | static int nfs41_free_stateid(struct nfs_server *server, | |
f0b0bf88 | 10242 | const nfs4_stateid *stateid, |
a52458b4 | 10243 | const struct cred *cred, |
7c1d5fae TM |
10244 | bool privileged) |
10245 | { | |
9aeda35f BS |
10246 | struct rpc_message msg = { |
10247 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_FREE_STATEID], | |
ab7cb0df | 10248 | .rpc_cred = cred, |
9aeda35f | 10249 | }; |
7c1d5fae TM |
10250 | struct rpc_task_setup task_setup = { |
10251 | .rpc_client = server->client, | |
10252 | .rpc_message = &msg, | |
10253 | .callback_ops = &nfs41_free_stateid_ops, | |
85e39fee | 10254 | .flags = RPC_TASK_ASYNC | RPC_TASK_MOVEABLE, |
7c1d5fae TM |
10255 | }; |
10256 | struct nfs_free_stateid_data *data; | |
2f261020 | 10257 | struct rpc_task *task; |
9aeda35f | 10258 | |
3787d506 WAA |
10259 | nfs4_state_protect(server->nfs_client, NFS_SP4_MACH_CRED_STATEID, |
10260 | &task_setup.rpc_client, &msg); | |
10261 | ||
38527b15 | 10262 | dprintk("NFS call free_stateid %p\n", stateid); |
7c1d5fae TM |
10263 | data = kmalloc(sizeof(*data), GFP_NOFS); |
10264 | if (!data) | |
2f261020 | 10265 | return -ENOMEM; |
7c1d5fae TM |
10266 | data->server = server; |
10267 | nfs4_stateid_copy(&data->args.stateid, stateid); | |
10268 | ||
10269 | task_setup.callback_data = data; | |
10270 | ||
10271 | msg.rpc_argp = &data->args; | |
10272 | msg.rpc_resp = &data->res; | |
fba83f34 | 10273 | nfs4_init_sequence(&data->args.seq_args, &data->res.seq_res, 1, privileged); |
2f261020 | 10274 | task = rpc_run_task(&task_setup); |
7c1d5fae TM |
10275 | if (IS_ERR(task)) |
10276 | return PTR_ERR(task); | |
7c1d5fae | 10277 | rpc_put_task(task); |
f0b0bf88 | 10278 | return 0; |
9aeda35f | 10279 | } |
36281caa | 10280 | |
f1cdae87 JL |
10281 | static void |
10282 | nfs41_free_lock_state(struct nfs_server *server, struct nfs4_lock_state *lsp) | |
c8b2d0bf | 10283 | { |
a52458b4 | 10284 | const struct cred *cred = lsp->ls_state->owner->so_cred; |
c8b2d0bf | 10285 | |
f0b0bf88 | 10286 | nfs41_free_stateid(server, &lsp->ls_stateid, cred, false); |
c8b2d0bf | 10287 | nfs4_free_lock_state(server, lsp); |
c8b2d0bf TM |
10288 | } |
10289 | ||
36281caa TM |
10290 | static bool nfs41_match_stateid(const nfs4_stateid *s1, |
10291 | const nfs4_stateid *s2) | |
10292 | { | |
93b717fd TM |
10293 | if (s1->type != s2->type) |
10294 | return false; | |
10295 | ||
2d2f24ad | 10296 | if (memcmp(s1->other, s2->other, sizeof(s1->other)) != 0) |
36281caa TM |
10297 | return false; |
10298 | ||
2d2f24ad | 10299 | if (s1->seqid == s2->seqid) |
36281caa | 10300 | return true; |
36281caa | 10301 | |
045c5519 | 10302 | return s1->seqid == 0 || s2->seqid == 0; |
36281caa TM |
10303 | } |
10304 | ||
557134a3 AA |
10305 | #endif /* CONFIG_NFS_V4_1 */ |
10306 | ||
36281caa TM |
10307 | static bool nfs4_match_stateid(const nfs4_stateid *s1, |
10308 | const nfs4_stateid *s2) | |
10309 | { | |
f597c537 | 10310 | return nfs4_stateid_match(s1, s2); |
36281caa TM |
10311 | } |
10312 | ||
10313 | ||
17280175 | 10314 | static const struct nfs4_state_recovery_ops nfs40_reboot_recovery_ops = { |
7eff03ae | 10315 | .owner_flag_bit = NFS_OWNER_RECLAIM_REBOOT, |
b79a4a1b | 10316 | .state_flag_bit = NFS_STATE_RECLAIM_REBOOT, |
1da177e4 LT |
10317 | .recover_open = nfs4_open_reclaim, |
10318 | .recover_lock = nfs4_lock_reclaim, | |
591d71cb | 10319 | .establish_clid = nfs4_init_clientid, |
05f4c350 | 10320 | .detect_trunking = nfs40_discover_server_trunking, |
1da177e4 LT |
10321 | }; |
10322 | ||
591d71cb | 10323 | #if defined(CONFIG_NFS_V4_1) |
17280175 | 10324 | static const struct nfs4_state_recovery_ops nfs41_reboot_recovery_ops = { |
591d71cb AA |
10325 | .owner_flag_bit = NFS_OWNER_RECLAIM_REBOOT, |
10326 | .state_flag_bit = NFS_STATE_RECLAIM_REBOOT, | |
10327 | .recover_open = nfs4_open_reclaim, | |
10328 | .recover_lock = nfs4_lock_reclaim, | |
4d643d1d | 10329 | .establish_clid = nfs41_init_clientid, |
fce5c838 | 10330 | .reclaim_complete = nfs41_proc_reclaim_complete, |
05f4c350 | 10331 | .detect_trunking = nfs41_discover_server_trunking, |
591d71cb AA |
10332 | }; |
10333 | #endif /* CONFIG_NFS_V4_1 */ | |
10334 | ||
17280175 | 10335 | static const struct nfs4_state_recovery_ops nfs40_nograce_recovery_ops = { |
591d71cb AA |
10336 | .owner_flag_bit = NFS_OWNER_RECLAIM_NOGRACE, |
10337 | .state_flag_bit = NFS_STATE_RECLAIM_NOGRACE, | |
4dfd4f7a | 10338 | .recover_open = nfs40_open_expired, |
591d71cb AA |
10339 | .recover_lock = nfs4_lock_expired, |
10340 | .establish_clid = nfs4_init_clientid, | |
10341 | }; | |
10342 | ||
10343 | #if defined(CONFIG_NFS_V4_1) | |
17280175 | 10344 | static const struct nfs4_state_recovery_ops nfs41_nograce_recovery_ops = { |
7eff03ae | 10345 | .owner_flag_bit = NFS_OWNER_RECLAIM_NOGRACE, |
b79a4a1b | 10346 | .state_flag_bit = NFS_STATE_RECLAIM_NOGRACE, |
f062eb6c BS |
10347 | .recover_open = nfs41_open_expired, |
10348 | .recover_lock = nfs41_lock_expired, | |
4d643d1d | 10349 | .establish_clid = nfs41_init_clientid, |
1da177e4 | 10350 | }; |
591d71cb | 10351 | #endif /* CONFIG_NFS_V4_1 */ |
1da177e4 | 10352 | |
17280175 | 10353 | static const struct nfs4_state_maintenance_ops nfs40_state_renewal_ops = { |
29fba38b | 10354 | .sched_state_renewal = nfs4_proc_async_renew, |
f15e1e8b | 10355 | .get_state_renewal_cred = nfs4_get_renew_cred, |
8e69514f | 10356 | .renew_lease = nfs4_proc_renew, |
29fba38b BH |
10357 | }; |
10358 | ||
10359 | #if defined(CONFIG_NFS_V4_1) | |
17280175 | 10360 | static const struct nfs4_state_maintenance_ops nfs41_state_renewal_ops = { |
29fba38b | 10361 | .sched_state_renewal = nfs41_proc_async_sequence, |
f15e1e8b | 10362 | .get_state_renewal_cred = nfs4_get_machine_cred, |
8e69514f | 10363 | .renew_lease = nfs4_proc_sequence, |
29fba38b BH |
10364 | }; |
10365 | #endif | |
10366 | ||
ec011fe8 | 10367 | static const struct nfs4_mig_recovery_ops nfs40_mig_recovery_ops = { |
b03d735b | 10368 | .get_locations = _nfs40_proc_get_locations, |
44c99933 | 10369 | .fsid_present = _nfs40_proc_fsid_present, |
ec011fe8 CL |
10370 | }; |
10371 | ||
10372 | #if defined(CONFIG_NFS_V4_1) | |
10373 | static const struct nfs4_mig_recovery_ops nfs41_mig_recovery_ops = { | |
b03d735b | 10374 | .get_locations = _nfs41_proc_get_locations, |
44c99933 | 10375 | .fsid_present = _nfs41_proc_fsid_present, |
ec011fe8 CL |
10376 | }; |
10377 | #endif /* CONFIG_NFS_V4_1 */ | |
10378 | ||
97dc1359 TM |
10379 | static const struct nfs4_minor_version_ops nfs_v4_0_minor_ops = { |
10380 | .minor_version = 0, | |
39c6daae TM |
10381 | .init_caps = NFS_CAP_READDIRPLUS |
10382 | | NFS_CAP_ATOMIC_OPEN | |
39c6daae | 10383 | | NFS_CAP_POSIX_LOCK, |
abf79bb3 CL |
10384 | .init_client = nfs40_init_client, |
10385 | .shutdown_client = nfs40_shutdown_client, | |
36281caa | 10386 | .match_stateid = nfs4_match_stateid, |
fca78d6d | 10387 | .find_root_sec = nfs4_find_root_sec, |
c8b2d0bf | 10388 | .free_lock_state = nfs4_release_lockowner, |
45870d69 | 10389 | .test_and_free_expired = nfs40_test_and_free_expired_stateid, |
63f5f796 | 10390 | .alloc_seqid = nfs_alloc_seqid, |
9915ea7e | 10391 | .call_sync_ops = &nfs40_call_sync_ops, |
c48f4f35 TM |
10392 | .reboot_recovery_ops = &nfs40_reboot_recovery_ops, |
10393 | .nograce_recovery_ops = &nfs40_nograce_recovery_ops, | |
10394 | .state_renewal_ops = &nfs40_state_renewal_ops, | |
ec011fe8 | 10395 | .mig_recovery_ops = &nfs40_mig_recovery_ops, |
97dc1359 TM |
10396 | }; |
10397 | ||
10398 | #if defined(CONFIG_NFS_V4_1) | |
63f5f796 TM |
10399 | static struct nfs_seqid * |
10400 | nfs_alloc_no_seqid(struct nfs_seqid_counter *arg1, gfp_t arg2) | |
10401 | { | |
10402 | return NULL; | |
10403 | } | |
10404 | ||
97dc1359 TM |
10405 | static const struct nfs4_minor_version_ops nfs_v4_1_minor_ops = { |
10406 | .minor_version = 1, | |
39c6daae TM |
10407 | .init_caps = NFS_CAP_READDIRPLUS |
10408 | | NFS_CAP_ATOMIC_OPEN | |
3b66486c | 10409 | | NFS_CAP_POSIX_LOCK |
49f9a0fa | 10410 | | NFS_CAP_STATEID_NFSV41 |
6e01260c FI |
10411 | | NFS_CAP_ATOMIC_OPEN_V1 |
10412 | | NFS_CAP_LGOPEN, | |
abf79bb3 CL |
10413 | .init_client = nfs41_init_client, |
10414 | .shutdown_client = nfs41_shutdown_client, | |
36281caa | 10415 | .match_stateid = nfs41_match_stateid, |
fca78d6d | 10416 | .find_root_sec = nfs41_find_root_sec, |
c8b2d0bf | 10417 | .free_lock_state = nfs41_free_lock_state, |
45870d69 | 10418 | .test_and_free_expired = nfs41_test_and_free_expired_stateid, |
63f5f796 | 10419 | .alloc_seqid = nfs_alloc_no_seqid, |
04fa2c6b | 10420 | .session_trunk = nfs4_test_session_trunk, |
9915ea7e | 10421 | .call_sync_ops = &nfs41_call_sync_ops, |
c48f4f35 TM |
10422 | .reboot_recovery_ops = &nfs41_reboot_recovery_ops, |
10423 | .nograce_recovery_ops = &nfs41_nograce_recovery_ops, | |
10424 | .state_renewal_ops = &nfs41_state_renewal_ops, | |
ec011fe8 | 10425 | .mig_recovery_ops = &nfs41_mig_recovery_ops, |
97dc1359 TM |
10426 | }; |
10427 | #endif | |
10428 | ||
42c2c424 SD |
10429 | #if defined(CONFIG_NFS_V4_2) |
10430 | static const struct nfs4_minor_version_ops nfs_v4_2_minor_ops = { | |
10431 | .minor_version = 2, | |
7017310a BS |
10432 | .init_caps = NFS_CAP_READDIRPLUS |
10433 | | NFS_CAP_ATOMIC_OPEN | |
7017310a BS |
10434 | | NFS_CAP_POSIX_LOCK |
10435 | | NFS_CAP_STATEID_NFSV41 | |
e983120e | 10436 | | NFS_CAP_ATOMIC_OPEN_V1 |
6e01260c | 10437 | | NFS_CAP_LGOPEN |
f4ac1674 | 10438 | | NFS_CAP_ALLOCATE |
2e72448b | 10439 | | NFS_CAP_COPY |
cb95deea | 10440 | | NFS_CAP_OFFLOAD_CANCEL |
0491567b | 10441 | | NFS_CAP_COPY_NOTIFY |
624bd5b7 | 10442 | | NFS_CAP_DEALLOCATE |
6c5a0d89 | 10443 | | NFS_CAP_SEEK |
e5341f3a | 10444 | | NFS_CAP_LAYOUTSTATS |
3eb86093 | 10445 | | NFS_CAP_CLONE |
c5675526 AS |
10446 | | NFS_CAP_LAYOUTERROR |
10447 | | NFS_CAP_READ_PLUS, | |
abf79bb3 CL |
10448 | .init_client = nfs41_init_client, |
10449 | .shutdown_client = nfs41_shutdown_client, | |
42c2c424 SD |
10450 | .match_stateid = nfs41_match_stateid, |
10451 | .find_root_sec = nfs41_find_root_sec, | |
7017310a | 10452 | .free_lock_state = nfs41_free_lock_state, |
9915ea7e | 10453 | .call_sync_ops = &nfs41_call_sync_ops, |
45870d69 | 10454 | .test_and_free_expired = nfs41_test_and_free_expired_stateid, |
63f5f796 | 10455 | .alloc_seqid = nfs_alloc_no_seqid, |
04fa2c6b | 10456 | .session_trunk = nfs4_test_session_trunk, |
42c2c424 SD |
10457 | .reboot_recovery_ops = &nfs41_reboot_recovery_ops, |
10458 | .nograce_recovery_ops = &nfs41_nograce_recovery_ops, | |
10459 | .state_renewal_ops = &nfs41_state_renewal_ops, | |
18e3b739 | 10460 | .mig_recovery_ops = &nfs41_mig_recovery_ops, |
42c2c424 SD |
10461 | }; |
10462 | #endif | |
10463 | ||
97dc1359 TM |
10464 | const struct nfs4_minor_version_ops *nfs_v4_minor_ops[] = { |
10465 | [0] = &nfs_v4_0_minor_ops, | |
10466 | #if defined(CONFIG_NFS_V4_1) | |
10467 | [1] = &nfs_v4_1_minor_ops, | |
10468 | #endif | |
42c2c424 SD |
10469 | #if defined(CONFIG_NFS_V4_2) |
10470 | [2] = &nfs_v4_2_minor_ops, | |
10471 | #endif | |
97dc1359 TM |
10472 | }; |
10473 | ||
13997823 | 10474 | static ssize_t nfs4_listxattr(struct dentry *dentry, char *list, size_t size) |
c4803c49 | 10475 | { |
012a211a | 10476 | ssize_t error, error2, error3; |
c4803c49 AG |
10477 | |
10478 | error = generic_listxattr(dentry, list, size); | |
10479 | if (error < 0) | |
10480 | return error; | |
10481 | if (list) { | |
10482 | list += error; | |
10483 | size -= error; | |
10484 | } | |
10485 | ||
10486 | error2 = nfs4_listxattr_nfs4_label(d_inode(dentry), list, size); | |
10487 | if (error2 < 0) | |
10488 | return error2; | |
012a211a FL |
10489 | |
10490 | if (list) { | |
10491 | list += error2; | |
10492 | size -= error2; | |
10493 | } | |
10494 | ||
10495 | error3 = nfs4_listxattr_nfs4_user(d_inode(dentry), list, size); | |
10496 | if (error3 < 0) | |
10497 | return error3; | |
10498 | ||
10499 | return error + error2 + error3; | |
c4803c49 AG |
10500 | } |
10501 | ||
17f26b12 | 10502 | static const struct inode_operations nfs4_dir_inode_operations = { |
73a79706 BS |
10503 | .create = nfs_create, |
10504 | .lookup = nfs_lookup, | |
10505 | .atomic_open = nfs_atomic_open, | |
10506 | .link = nfs_link, | |
10507 | .unlink = nfs_unlink, | |
10508 | .symlink = nfs_symlink, | |
10509 | .mkdir = nfs_mkdir, | |
10510 | .rmdir = nfs_rmdir, | |
10511 | .mknod = nfs_mknod, | |
10512 | .rename = nfs_rename, | |
10513 | .permission = nfs_permission, | |
10514 | .getattr = nfs_getattr, | |
10515 | .setattr = nfs_setattr, | |
c4803c49 | 10516 | .listxattr = nfs4_listxattr, |
73a79706 BS |
10517 | }; |
10518 | ||
92e1d5be | 10519 | static const struct inode_operations nfs4_file_inode_operations = { |
6b3b5496 BF |
10520 | .permission = nfs_permission, |
10521 | .getattr = nfs_getattr, | |
10522 | .setattr = nfs_setattr, | |
c4803c49 | 10523 | .listxattr = nfs4_listxattr, |
6b3b5496 BF |
10524 | }; |
10525 | ||
509de811 | 10526 | const struct nfs_rpc_ops nfs_v4_clientops = { |
1da177e4 LT |
10527 | .version = 4, /* protocol version */ |
10528 | .dentry_ops = &nfs4_dentry_operations, | |
10529 | .dir_inode_ops = &nfs4_dir_inode_operations, | |
6b3b5496 | 10530 | .file_inode_ops = &nfs4_file_inode_operations, |
1788ea6e | 10531 | .file_ops = &nfs4_file_operations, |
1da177e4 | 10532 | .getroot = nfs4_proc_get_root, |
281cad46 | 10533 | .submount = nfs4_submount, |
f2aedb71 | 10534 | .try_get_tree = nfs4_try_get_tree, |
1da177e4 LT |
10535 | .getattr = nfs4_proc_getattr, |
10536 | .setattr = nfs4_proc_setattr, | |
10537 | .lookup = nfs4_proc_lookup, | |
5b5faaf6 | 10538 | .lookupp = nfs4_proc_lookupp, |
1da177e4 LT |
10539 | .access = nfs4_proc_access, |
10540 | .readlink = nfs4_proc_readlink, | |
1da177e4 LT |
10541 | .create = nfs4_proc_create, |
10542 | .remove = nfs4_proc_remove, | |
10543 | .unlink_setup = nfs4_proc_unlink_setup, | |
34e137cc | 10544 | .unlink_rpc_prepare = nfs4_proc_unlink_rpc_prepare, |
1da177e4 | 10545 | .unlink_done = nfs4_proc_unlink_done, |
d3d4152a | 10546 | .rename_setup = nfs4_proc_rename_setup, |
c6bfa1a1 | 10547 | .rename_rpc_prepare = nfs4_proc_rename_rpc_prepare, |
d3d4152a | 10548 | .rename_done = nfs4_proc_rename_done, |
1da177e4 LT |
10549 | .link = nfs4_proc_link, |
10550 | .symlink = nfs4_proc_symlink, | |
10551 | .mkdir = nfs4_proc_mkdir, | |
912678db | 10552 | .rmdir = nfs4_proc_rmdir, |
1da177e4 LT |
10553 | .readdir = nfs4_proc_readdir, |
10554 | .mknod = nfs4_proc_mknod, | |
10555 | .statfs = nfs4_proc_statfs, | |
10556 | .fsinfo = nfs4_proc_fsinfo, | |
10557 | .pathconf = nfs4_proc_pathconf, | |
e9326dca | 10558 | .set_capabilities = nfs4_server_capabilities, |
1da177e4 | 10559 | .decode_dirent = nfs4_decode_dirent, |
a4cdda59 | 10560 | .pgio_rpc_prepare = nfs4_proc_pgio_rpc_prepare, |
1da177e4 | 10561 | .read_setup = nfs4_proc_read_setup, |
ec06c096 | 10562 | .read_done = nfs4_read_done, |
1da177e4 | 10563 | .write_setup = nfs4_proc_write_setup, |
788e7a89 | 10564 | .write_done = nfs4_write_done, |
1da177e4 | 10565 | .commit_setup = nfs4_proc_commit_setup, |
0b7c0153 | 10566 | .commit_rpc_prepare = nfs4_proc_commit_rpc_prepare, |
788e7a89 | 10567 | .commit_done = nfs4_commit_done, |
1da177e4 | 10568 | .lock = nfs4_proc_lock, |
e50a1c2e | 10569 | .clear_acl_cache = nfs4_zap_acl_attr, |
7fe5c398 | 10570 | .close_context = nfs4_close_context, |
2b484297 | 10571 | .open_context = nfs4_atomic_open, |
011e2a7f | 10572 | .have_delegation = nfs4_have_delegation, |
6663ee7f | 10573 | .alloc_client = nfs4_alloc_client, |
45a52a02 | 10574 | .init_client = nfs4_init_client, |
cdb7eced | 10575 | .free_client = nfs4_free_client, |
1179acc6 BS |
10576 | .create_server = nfs4_create_server, |
10577 | .clone_server = nfs_clone_server, | |
bdab4fd5 | 10578 | .discover_trunking = nfs4_discover_trunking, |
1da177e4 LT |
10579 | }; |
10580 | ||
64c2ce8b | 10581 | static const struct xattr_handler nfs4_xattr_nfs4_acl_handler = { |
98e9cb57 | 10582 | .name = XATTR_NAME_NFSV4_ACL, |
64c2ce8b AK |
10583 | .list = nfs4_xattr_list_nfs4_acl, |
10584 | .get = nfs4_xattr_get_nfs4_acl, | |
10585 | .set = nfs4_xattr_set_nfs4_acl, | |
10586 | }; | |
10587 | ||
012a211a FL |
10588 | #ifdef CONFIG_NFS_V4_2 |
10589 | static const struct xattr_handler nfs4_xattr_nfs4_user_handler = { | |
10590 | .prefix = XATTR_USER_PREFIX, | |
10591 | .get = nfs4_xattr_get_nfs4_user, | |
10592 | .set = nfs4_xattr_set_nfs4_user, | |
10593 | }; | |
10594 | #endif | |
10595 | ||
64c2ce8b AK |
10596 | const struct xattr_handler *nfs4_xattr_handlers[] = { |
10597 | &nfs4_xattr_nfs4_acl_handler, | |
c9bccef6 DQ |
10598 | #ifdef CONFIG_NFS_V4_SECURITY_LABEL |
10599 | &nfs4_xattr_nfs4_label_handler, | |
012a211a FL |
10600 | #endif |
10601 | #ifdef CONFIG_NFS_V4_2 | |
10602 | &nfs4_xattr_nfs4_user_handler, | |
c9bccef6 | 10603 | #endif |
64c2ce8b AK |
10604 | NULL |
10605 | }; |