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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> | |
39 | #include <linux/utsname.h> | |
40 | #include <linux/delay.h> | |
41 | #include <linux/errno.h> | |
42 | #include <linux/string.h> | |
43 | #include <linux/sunrpc/clnt.h> | |
44 | #include <linux/nfs.h> | |
45 | #include <linux/nfs4.h> | |
46 | #include <linux/nfs_fs.h> | |
47 | #include <linux/nfs_page.h> | |
48 | #include <linux/smp_lock.h> | |
49 | #include <linux/namei.h> | |
02a913a7 | 50 | #include <linux/mount.h> |
1da177e4 | 51 | |
4ce79717 | 52 | #include "nfs4_fs.h" |
1da177e4 | 53 | #include "delegation.h" |
006ea73e | 54 | #include "iostat.h" |
1da177e4 LT |
55 | |
56 | #define NFSDBG_FACILITY NFSDBG_PROC | |
57 | ||
2066fe89 | 58 | #define NFS4_POLL_RETRY_MIN (HZ/10) |
1da177e4 LT |
59 | #define NFS4_POLL_RETRY_MAX (15*HZ) |
60 | ||
cdd4e68b | 61 | struct nfs4_opendata; |
864472e9 | 62 | static int _nfs4_proc_open(struct nfs4_opendata *data); |
1da177e4 | 63 | static int nfs4_do_fsinfo(struct nfs_server *, struct nfs_fh *, struct nfs_fsinfo *); |
faf5f49c | 64 | static int nfs4_async_handle_error(struct rpc_task *, const struct nfs_server *); |
faf5f49c | 65 | static int nfs4_handle_exception(const struct nfs_server *server, int errorcode, struct nfs4_exception *exception); |
adfa6f98 | 66 | static int nfs4_wait_clnt_recover(struct rpc_clnt *clnt, struct nfs_client *clp); |
9936781d TM |
67 | static int _nfs4_proc_lookup(struct inode *dir, const struct qstr *name, struct nfs_fh *fhandle, struct nfs_fattr *fattr); |
68 | static int _nfs4_proc_getattr(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fattr *fattr); | |
1da177e4 | 69 | |
1da177e4 LT |
70 | /* Prevent leaks of NFSv4 errors into userland */ |
71 | int nfs4_map_errors(int err) | |
72 | { | |
73 | if (err < -1000) { | |
74 | dprintk("%s could not handle NFSv4 error %d\n", | |
75 | __FUNCTION__, -err); | |
76 | return -EIO; | |
77 | } | |
78 | return err; | |
79 | } | |
80 | ||
81 | /* | |
82 | * This is our standard bitmap for GETATTR requests. | |
83 | */ | |
84 | const u32 nfs4_fattr_bitmap[2] = { | |
85 | FATTR4_WORD0_TYPE | |
86 | | FATTR4_WORD0_CHANGE | |
87 | | FATTR4_WORD0_SIZE | |
88 | | FATTR4_WORD0_FSID | |
89 | | FATTR4_WORD0_FILEID, | |
90 | FATTR4_WORD1_MODE | |
91 | | FATTR4_WORD1_NUMLINKS | |
92 | | FATTR4_WORD1_OWNER | |
93 | | FATTR4_WORD1_OWNER_GROUP | |
94 | | FATTR4_WORD1_RAWDEV | |
95 | | FATTR4_WORD1_SPACE_USED | |
96 | | FATTR4_WORD1_TIME_ACCESS | |
97 | | FATTR4_WORD1_TIME_METADATA | |
98 | | FATTR4_WORD1_TIME_MODIFY | |
99 | }; | |
100 | ||
101 | const u32 nfs4_statfs_bitmap[2] = { | |
102 | FATTR4_WORD0_FILES_AVAIL | |
103 | | FATTR4_WORD0_FILES_FREE | |
104 | | FATTR4_WORD0_FILES_TOTAL, | |
105 | FATTR4_WORD1_SPACE_AVAIL | |
106 | | FATTR4_WORD1_SPACE_FREE | |
107 | | FATTR4_WORD1_SPACE_TOTAL | |
108 | }; | |
109 | ||
4ce79717 | 110 | const u32 nfs4_pathconf_bitmap[2] = { |
1da177e4 LT |
111 | FATTR4_WORD0_MAXLINK |
112 | | FATTR4_WORD0_MAXNAME, | |
113 | 0 | |
114 | }; | |
115 | ||
116 | const u32 nfs4_fsinfo_bitmap[2] = { FATTR4_WORD0_MAXFILESIZE | |
117 | | FATTR4_WORD0_MAXREAD | |
118 | | FATTR4_WORD0_MAXWRITE | |
119 | | FATTR4_WORD0_LEASE_TIME, | |
120 | 0 | |
121 | }; | |
122 | ||
830b8e33 MN |
123 | const u32 nfs4_fs_locations_bitmap[2] = { |
124 | FATTR4_WORD0_TYPE | |
125 | | FATTR4_WORD0_CHANGE | |
126 | | FATTR4_WORD0_SIZE | |
127 | | FATTR4_WORD0_FSID | |
128 | | FATTR4_WORD0_FILEID | |
129 | | FATTR4_WORD0_FS_LOCATIONS, | |
130 | FATTR4_WORD1_MODE | |
131 | | FATTR4_WORD1_NUMLINKS | |
132 | | FATTR4_WORD1_OWNER | |
133 | | FATTR4_WORD1_OWNER_GROUP | |
134 | | FATTR4_WORD1_RAWDEV | |
135 | | FATTR4_WORD1_SPACE_USED | |
136 | | FATTR4_WORD1_TIME_ACCESS | |
137 | | FATTR4_WORD1_TIME_METADATA | |
138 | | FATTR4_WORD1_TIME_MODIFY | |
139 | | FATTR4_WORD1_MOUNTED_ON_FILEID | |
140 | }; | |
141 | ||
bc4785cd | 142 | static void nfs4_setup_readdir(u64 cookie, __be32 *verifier, struct dentry *dentry, |
1da177e4 LT |
143 | struct nfs4_readdir_arg *readdir) |
144 | { | |
0dbb4c67 | 145 | __be32 *start, *p; |
1da177e4 LT |
146 | |
147 | BUG_ON(readdir->count < 80); | |
148 | if (cookie > 2) { | |
b7ef1956 | 149 | readdir->cookie = cookie; |
1da177e4 LT |
150 | memcpy(&readdir->verifier, verifier, sizeof(readdir->verifier)); |
151 | return; | |
152 | } | |
153 | ||
154 | readdir->cookie = 0; | |
155 | memset(&readdir->verifier, 0, sizeof(readdir->verifier)); | |
156 | if (cookie == 2) | |
157 | return; | |
158 | ||
159 | /* | |
160 | * NFSv4 servers do not return entries for '.' and '..' | |
161 | * Therefore, we fake these entries here. We let '.' | |
162 | * have cookie 0 and '..' have cookie 1. Note that | |
163 | * when talking to the server, we always send cookie 0 | |
164 | * instead of 1 or 2. | |
165 | */ | |
0dbb4c67 | 166 | start = p = kmap_atomic(*readdir->pages, KM_USER0); |
1da177e4 LT |
167 | |
168 | if (cookie == 0) { | |
169 | *p++ = xdr_one; /* next */ | |
170 | *p++ = xdr_zero; /* cookie, first word */ | |
171 | *p++ = xdr_one; /* cookie, second word */ | |
172 | *p++ = xdr_one; /* entry len */ | |
173 | memcpy(p, ".\0\0\0", 4); /* entry */ | |
174 | p++; | |
175 | *p++ = xdr_one; /* bitmap length */ | |
176 | *p++ = htonl(FATTR4_WORD0_FILEID); /* bitmap */ | |
177 | *p++ = htonl(8); /* attribute buffer length */ | |
4e769b93 | 178 | p = xdr_encode_hyper(p, NFS_FILEID(dentry->d_inode)); |
1da177e4 LT |
179 | } |
180 | ||
181 | *p++ = xdr_one; /* next */ | |
182 | *p++ = xdr_zero; /* cookie, first word */ | |
183 | *p++ = xdr_two; /* cookie, second word */ | |
184 | *p++ = xdr_two; /* entry len */ | |
185 | memcpy(p, "..\0\0", 4); /* entry */ | |
186 | p++; | |
187 | *p++ = xdr_one; /* bitmap length */ | |
188 | *p++ = htonl(FATTR4_WORD0_FILEID); /* bitmap */ | |
189 | *p++ = htonl(8); /* attribute buffer length */ | |
4e769b93 | 190 | p = xdr_encode_hyper(p, NFS_FILEID(dentry->d_parent->d_inode)); |
1da177e4 LT |
191 | |
192 | readdir->pgbase = (char *)p - (char *)start; | |
193 | readdir->count -= readdir->pgbase; | |
194 | kunmap_atomic(start, KM_USER0); | |
195 | } | |
196 | ||
26e976a8 | 197 | static void renew_lease(const struct nfs_server *server, unsigned long timestamp) |
1da177e4 | 198 | { |
7539bbab | 199 | struct nfs_client *clp = server->nfs_client; |
1da177e4 LT |
200 | spin_lock(&clp->cl_lock); |
201 | if (time_before(clp->cl_last_renewal,timestamp)) | |
202 | clp->cl_last_renewal = timestamp; | |
203 | spin_unlock(&clp->cl_lock); | |
204 | } | |
205 | ||
38478b24 | 206 | static void update_changeattr(struct inode *dir, struct nfs4_change_info *cinfo) |
1da177e4 | 207 | { |
38478b24 | 208 | struct nfs_inode *nfsi = NFS_I(dir); |
1da177e4 | 209 | |
38478b24 | 210 | spin_lock(&dir->i_lock); |
40d24704 TM |
211 | nfsi->cache_validity |= NFS_INO_INVALID_ATTR|NFS_INO_REVAL_PAGECACHE|NFS_INO_INVALID_DATA; |
212 | if (!cinfo->atomic || cinfo->before != nfsi->change_attr) | |
213 | nfsi->cache_change_attribute = jiffies; | |
214 | nfsi->change_attr = cinfo->after; | |
38478b24 | 215 | spin_unlock(&dir->i_lock); |
1da177e4 LT |
216 | } |
217 | ||
e56e0b78 | 218 | struct nfs4_opendata { |
c6d00e63 | 219 | struct kref kref; |
e56e0b78 TM |
220 | struct nfs_openargs o_arg; |
221 | struct nfs_openres o_res; | |
cdd4e68b TM |
222 | struct nfs_open_confirmargs c_arg; |
223 | struct nfs_open_confirmres c_res; | |
e56e0b78 TM |
224 | struct nfs_fattr f_attr; |
225 | struct nfs_fattr dir_attr; | |
ad389da7 | 226 | struct path path; |
e56e0b78 TM |
227 | struct dentry *dir; |
228 | struct nfs4_state_owner *owner; | |
aac00a8d | 229 | struct nfs4_state *state; |
e56e0b78 | 230 | struct iattr attrs; |
26e976a8 | 231 | unsigned long timestamp; |
3e309914 | 232 | unsigned int rpc_done : 1; |
24ac23ab TM |
233 | int rpc_status; |
234 | int cancelled; | |
e56e0b78 TM |
235 | }; |
236 | ||
2ced46c2 TM |
237 | |
238 | static void nfs4_init_opendata_res(struct nfs4_opendata *p) | |
239 | { | |
240 | p->o_res.f_attr = &p->f_attr; | |
241 | p->o_res.dir_attr = &p->dir_attr; | |
242 | p->o_res.server = p->o_arg.server; | |
243 | nfs_fattr_init(&p->f_attr); | |
244 | nfs_fattr_init(&p->dir_attr); | |
245 | } | |
246 | ||
ad389da7 | 247 | static struct nfs4_opendata *nfs4_opendata_alloc(struct path *path, |
e56e0b78 TM |
248 | struct nfs4_state_owner *sp, int flags, |
249 | const struct iattr *attrs) | |
250 | { | |
ad389da7 | 251 | struct dentry *parent = dget_parent(path->dentry); |
e56e0b78 TM |
252 | struct inode *dir = parent->d_inode; |
253 | struct nfs_server *server = NFS_SERVER(dir); | |
254 | struct nfs4_opendata *p; | |
255 | ||
256 | p = kzalloc(sizeof(*p), GFP_KERNEL); | |
257 | if (p == NULL) | |
258 | goto err; | |
259 | p->o_arg.seqid = nfs_alloc_seqid(&sp->so_seqid); | |
260 | if (p->o_arg.seqid == NULL) | |
261 | goto err_free; | |
ad389da7 TM |
262 | p->path.mnt = mntget(path->mnt); |
263 | p->path.dentry = dget(path->dentry); | |
e56e0b78 TM |
264 | p->dir = parent; |
265 | p->owner = sp; | |
266 | atomic_inc(&sp->so_count); | |
267 | p->o_arg.fh = NFS_FH(dir); | |
268 | p->o_arg.open_flags = flags, | |
7539bbab | 269 | p->o_arg.clientid = server->nfs_client->cl_clientid; |
9f958ab8 | 270 | p->o_arg.id = sp->so_owner_id.id; |
ad389da7 | 271 | p->o_arg.name = &p->path.dentry->d_name; |
e56e0b78 TM |
272 | p->o_arg.server = server; |
273 | p->o_arg.bitmask = server->attr_bitmask; | |
274 | p->o_arg.claim = NFS4_OPEN_CLAIM_NULL; | |
e56e0b78 TM |
275 | if (flags & O_EXCL) { |
276 | u32 *s = (u32 *) p->o_arg.u.verifier.data; | |
277 | s[0] = jiffies; | |
278 | s[1] = current->pid; | |
279 | } else if (flags & O_CREAT) { | |
280 | p->o_arg.u.attrs = &p->attrs; | |
281 | memcpy(&p->attrs, attrs, sizeof(p->attrs)); | |
282 | } | |
cdd4e68b TM |
283 | p->c_arg.fh = &p->o_res.fh; |
284 | p->c_arg.stateid = &p->o_res.stateid; | |
285 | p->c_arg.seqid = p->o_arg.seqid; | |
2ced46c2 | 286 | nfs4_init_opendata_res(p); |
c6d00e63 | 287 | kref_init(&p->kref); |
e56e0b78 TM |
288 | return p; |
289 | err_free: | |
290 | kfree(p); | |
291 | err: | |
292 | dput(parent); | |
293 | return NULL; | |
294 | } | |
295 | ||
c6d00e63 | 296 | static void nfs4_opendata_free(struct kref *kref) |
e56e0b78 | 297 | { |
c6d00e63 TM |
298 | struct nfs4_opendata *p = container_of(kref, |
299 | struct nfs4_opendata, kref); | |
300 | ||
301 | nfs_free_seqid(p->o_arg.seqid); | |
aac00a8d TM |
302 | if (p->state != NULL) |
303 | nfs4_put_open_state(p->state); | |
c6d00e63 TM |
304 | nfs4_put_state_owner(p->owner); |
305 | dput(p->dir); | |
306 | dput(p->path.dentry); | |
307 | mntput(p->path.mnt); | |
308 | kfree(p); | |
309 | } | |
310 | ||
311 | static void nfs4_opendata_put(struct nfs4_opendata *p) | |
312 | { | |
313 | if (p != NULL) | |
314 | kref_put(&p->kref, nfs4_opendata_free); | |
e56e0b78 TM |
315 | } |
316 | ||
06f814a3 TM |
317 | static int nfs4_wait_for_completion_rpc_task(struct rpc_task *task) |
318 | { | |
319 | sigset_t oldset; | |
320 | int ret; | |
321 | ||
322 | rpc_clnt_sigmask(task->tk_client, &oldset); | |
323 | ret = rpc_wait_for_completion_task(task); | |
324 | rpc_clnt_sigunmask(task->tk_client, &oldset); | |
325 | return ret; | |
326 | } | |
327 | ||
6ee41268 TM |
328 | static int can_open_cached(struct nfs4_state *state, int mode) |
329 | { | |
330 | int ret = 0; | |
331 | switch (mode & (FMODE_READ|FMODE_WRITE|O_EXCL)) { | |
332 | case FMODE_READ: | |
333 | ret |= test_bit(NFS_O_RDONLY_STATE, &state->flags) != 0; | |
6ee41268 TM |
334 | break; |
335 | case FMODE_WRITE: | |
336 | ret |= test_bit(NFS_O_WRONLY_STATE, &state->flags) != 0; | |
6ee41268 TM |
337 | break; |
338 | case FMODE_READ|FMODE_WRITE: | |
339 | ret |= test_bit(NFS_O_RDWR_STATE, &state->flags) != 0; | |
340 | } | |
341 | return ret; | |
342 | } | |
343 | ||
aac00a8d TM |
344 | static int can_open_delegated(struct nfs_delegation *delegation, mode_t open_flags) |
345 | { | |
346 | if ((delegation->type & open_flags) != open_flags) | |
347 | return 0; | |
348 | if (delegation->flags & NFS_DELEGATION_NEED_RECLAIM) | |
349 | return 0; | |
350 | return 1; | |
351 | } | |
352 | ||
003707c7 | 353 | static void update_open_stateflags(struct nfs4_state *state, mode_t open_flags) |
e7616923 TM |
354 | { |
355 | switch (open_flags) { | |
356 | case FMODE_WRITE: | |
357 | state->n_wronly++; | |
358 | break; | |
359 | case FMODE_READ: | |
360 | state->n_rdonly++; | |
361 | break; | |
362 | case FMODE_READ|FMODE_WRITE: | |
363 | state->n_rdwr++; | |
364 | } | |
003707c7 TM |
365 | nfs4_state_set_mode_locked(state, state->state | open_flags); |
366 | } | |
367 | ||
368 | static void nfs_set_open_stateid_locked(struct nfs4_state *state, nfs4_stateid *stateid, int open_flags) | |
369 | { | |
370 | if (test_bit(NFS_DELEGATED_STATE, &state->flags) == 0) | |
371 | memcpy(state->stateid.data, stateid->data, sizeof(state->stateid.data)); | |
372 | memcpy(state->open_stateid.data, stateid->data, sizeof(state->open_stateid.data)); | |
373 | switch (open_flags) { | |
374 | case FMODE_READ: | |
375 | set_bit(NFS_O_RDONLY_STATE, &state->flags); | |
376 | break; | |
377 | case FMODE_WRITE: | |
378 | set_bit(NFS_O_WRONLY_STATE, &state->flags); | |
379 | break; | |
380 | case FMODE_READ|FMODE_WRITE: | |
381 | set_bit(NFS_O_RDWR_STATE, &state->flags); | |
382 | } | |
e7616923 TM |
383 | } |
384 | ||
003707c7 TM |
385 | static void nfs_set_open_stateid(struct nfs4_state *state, nfs4_stateid *stateid, int open_flags) |
386 | { | |
8bda4e4c | 387 | write_seqlock(&state->seqlock); |
003707c7 | 388 | nfs_set_open_stateid_locked(state, stateid, open_flags); |
8bda4e4c | 389 | write_sequnlock(&state->seqlock); |
003707c7 TM |
390 | } |
391 | ||
392 | static void update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stateid, nfs4_stateid *deleg_stateid, int open_flags) | |
1da177e4 | 393 | { |
1da177e4 | 394 | open_flags &= (FMODE_READ|FMODE_WRITE); |
8bda4e4c TM |
395 | /* |
396 | * Protect the call to nfs4_state_set_mode_locked and | |
397 | * serialise the stateid update | |
398 | */ | |
399 | write_seqlock(&state->seqlock); | |
003707c7 TM |
400 | if (deleg_stateid != NULL) { |
401 | memcpy(state->stateid.data, deleg_stateid->data, sizeof(state->stateid.data)); | |
402 | set_bit(NFS_DELEGATED_STATE, &state->flags); | |
403 | } | |
404 | if (open_stateid != NULL) | |
405 | nfs_set_open_stateid_locked(state, open_stateid, open_flags); | |
8bda4e4c TM |
406 | write_sequnlock(&state->seqlock); |
407 | spin_lock(&state->owner->so_lock); | |
e7616923 | 408 | update_open_stateflags(state, open_flags); |
ec073428 | 409 | spin_unlock(&state->owner->so_lock); |
1da177e4 LT |
410 | } |
411 | ||
aac00a8d TM |
412 | static void nfs4_return_incompatible_delegation(struct inode *inode, mode_t open_flags) |
413 | { | |
414 | struct nfs_delegation *delegation; | |
415 | ||
416 | rcu_read_lock(); | |
417 | delegation = rcu_dereference(NFS_I(inode)->delegation); | |
418 | if (delegation == NULL || (delegation->type & open_flags) == open_flags) { | |
419 | rcu_read_unlock(); | |
420 | return; | |
421 | } | |
422 | rcu_read_unlock(); | |
423 | nfs_inode_return_delegation(inode); | |
424 | } | |
425 | ||
6ee41268 | 426 | static struct nfs4_state *nfs4_try_open_cached(struct nfs4_opendata *opendata) |
aac00a8d TM |
427 | { |
428 | struct nfs4_state *state = opendata->state; | |
429 | struct nfs_inode *nfsi = NFS_I(state->inode); | |
430 | struct nfs_delegation *delegation; | |
431 | int open_mode = opendata->o_arg.open_flags & (FMODE_READ|FMODE_WRITE|O_EXCL); | |
432 | nfs4_stateid stateid; | |
433 | int ret = -EAGAIN; | |
434 | ||
435 | rcu_read_lock(); | |
436 | delegation = rcu_dereference(nfsi->delegation); | |
aac00a8d | 437 | for (;;) { |
6ee41268 TM |
438 | if (can_open_cached(state, open_mode)) { |
439 | spin_lock(&state->owner->so_lock); | |
440 | if (can_open_cached(state, open_mode)) { | |
441 | update_open_stateflags(state, open_mode); | |
442 | spin_unlock(&state->owner->so_lock); | |
443 | rcu_read_unlock(); | |
444 | goto out_return_state; | |
445 | } | |
446 | spin_unlock(&state->owner->so_lock); | |
447 | } | |
448 | if (delegation == NULL) | |
449 | break; | |
aac00a8d TM |
450 | if (!can_open_delegated(delegation, open_mode)) |
451 | break; | |
452 | /* Save the delegation */ | |
453 | memcpy(stateid.data, delegation->stateid.data, sizeof(stateid.data)); | |
454 | rcu_read_unlock(); | |
455 | lock_kernel(); | |
af22f94a | 456 | ret = nfs_may_open(state->inode, state->owner->so_cred, open_mode); |
aac00a8d TM |
457 | unlock_kernel(); |
458 | if (ret != 0) | |
459 | goto out; | |
460 | ret = -EAGAIN; | |
461 | rcu_read_lock(); | |
462 | delegation = rcu_dereference(nfsi->delegation); | |
6ee41268 | 463 | /* If no delegation, try a cached open */ |
aac00a8d | 464 | if (delegation == NULL) |
6ee41268 | 465 | continue; |
aac00a8d TM |
466 | /* Is the delegation still valid? */ |
467 | if (memcmp(stateid.data, delegation->stateid.data, sizeof(stateid.data)) != 0) | |
468 | continue; | |
469 | rcu_read_unlock(); | |
470 | update_open_stateid(state, NULL, &stateid, open_mode); | |
471 | goto out_return_state; | |
472 | } | |
aac00a8d TM |
473 | rcu_read_unlock(); |
474 | out: | |
475 | return ERR_PTR(ret); | |
476 | out_return_state: | |
477 | atomic_inc(&state->count); | |
478 | return state; | |
479 | } | |
480 | ||
24ac23ab TM |
481 | static struct nfs4_state *nfs4_opendata_to_nfs4_state(struct nfs4_opendata *data) |
482 | { | |
483 | struct inode *inode; | |
484 | struct nfs4_state *state = NULL; | |
003707c7 TM |
485 | struct nfs_delegation *delegation; |
486 | nfs4_stateid *deleg_stateid = NULL; | |
1b370bc2 | 487 | int ret; |
24ac23ab | 488 | |
aac00a8d | 489 | if (!data->rpc_done) { |
6ee41268 | 490 | state = nfs4_try_open_cached(data); |
aac00a8d TM |
491 | goto out; |
492 | } | |
493 | ||
1b370bc2 | 494 | ret = -EAGAIN; |
24ac23ab | 495 | if (!(data->f_attr.valid & NFS_ATTR_FATTR)) |
1b370bc2 | 496 | goto err; |
24ac23ab | 497 | inode = nfs_fhget(data->dir->d_sb, &data->o_res.fh, &data->f_attr); |
1b370bc2 | 498 | ret = PTR_ERR(inode); |
03f28e3a | 499 | if (IS_ERR(inode)) |
1b370bc2 TM |
500 | goto err; |
501 | ret = -ENOMEM; | |
24ac23ab TM |
502 | state = nfs4_get_open_state(inode, data->owner); |
503 | if (state == NULL) | |
1b370bc2 | 504 | goto err_put_inode; |
549d6ed5 | 505 | if (data->o_res.delegation_type != 0) { |
549d6ed5 TM |
506 | int delegation_flags = 0; |
507 | ||
003707c7 TM |
508 | rcu_read_lock(); |
509 | delegation = rcu_dereference(NFS_I(inode)->delegation); | |
510 | if (delegation) | |
511 | delegation_flags = delegation->flags; | |
512 | rcu_read_unlock(); | |
549d6ed5 TM |
513 | if (!(delegation_flags & NFS_DELEGATION_NEED_RECLAIM)) |
514 | nfs_inode_set_delegation(state->inode, | |
515 | data->owner->so_cred, | |
516 | &data->o_res); | |
517 | else | |
518 | nfs_inode_reclaim_delegation(state->inode, | |
519 | data->owner->so_cred, | |
520 | &data->o_res); | |
521 | } | |
003707c7 TM |
522 | rcu_read_lock(); |
523 | delegation = rcu_dereference(NFS_I(inode)->delegation); | |
524 | if (delegation != NULL) | |
525 | deleg_stateid = &delegation->stateid; | |
526 | update_open_stateid(state, &data->o_res.stateid, deleg_stateid, data->o_arg.open_flags); | |
527 | rcu_read_unlock(); | |
24ac23ab | 528 | iput(inode); |
aac00a8d | 529 | out: |
24ac23ab | 530 | return state; |
1b370bc2 TM |
531 | err_put_inode: |
532 | iput(inode); | |
533 | err: | |
534 | return ERR_PTR(ret); | |
24ac23ab TM |
535 | } |
536 | ||
864472e9 TM |
537 | static struct nfs_open_context *nfs4_state_find_open_context(struct nfs4_state *state) |
538 | { | |
539 | struct nfs_inode *nfsi = NFS_I(state->inode); | |
540 | struct nfs_open_context *ctx; | |
541 | ||
542 | spin_lock(&state->inode->i_lock); | |
543 | list_for_each_entry(ctx, &nfsi->open_files, list) { | |
544 | if (ctx->state != state) | |
545 | continue; | |
546 | get_nfs_open_context(ctx); | |
547 | spin_unlock(&state->inode->i_lock); | |
548 | return ctx; | |
549 | } | |
550 | spin_unlock(&state->inode->i_lock); | |
551 | return ERR_PTR(-ENOENT); | |
552 | } | |
553 | ||
6f220ed5 TM |
554 | static struct nfs4_opendata *nfs4_open_recoverdata_alloc(struct nfs_open_context *ctx, struct nfs4_state *state) |
555 | { | |
556 | struct nfs4_opendata *opendata; | |
557 | ||
558 | opendata = nfs4_opendata_alloc(&ctx->path, state->owner, 0, NULL); | |
559 | if (opendata == NULL) | |
560 | return ERR_PTR(-ENOMEM); | |
561 | opendata->state = state; | |
562 | atomic_inc(&state->count); | |
563 | return opendata; | |
564 | } | |
565 | ||
2ced46c2 | 566 | static int nfs4_open_recover_helper(struct nfs4_opendata *opendata, mode_t openflags, struct nfs4_state **res) |
864472e9 | 567 | { |
2ced46c2 | 568 | struct nfs4_state *newstate; |
864472e9 TM |
569 | int ret; |
570 | ||
571 | opendata->o_arg.open_flags = openflags; | |
2ced46c2 TM |
572 | memset(&opendata->o_res, 0, sizeof(opendata->o_res)); |
573 | memset(&opendata->c_res, 0, sizeof(opendata->c_res)); | |
574 | nfs4_init_opendata_res(opendata); | |
864472e9 TM |
575 | ret = _nfs4_proc_open(opendata); |
576 | if (ret != 0) | |
577 | return ret; | |
2ced46c2 | 578 | newstate = nfs4_opendata_to_nfs4_state(opendata); |
1b370bc2 TM |
579 | if (IS_ERR(newstate)) |
580 | return PTR_ERR(newstate); | |
581 | nfs4_close_state(&opendata->path, newstate, openflags); | |
2ced46c2 | 582 | *res = newstate; |
864472e9 TM |
583 | return 0; |
584 | } | |
585 | ||
586 | static int nfs4_open_recover(struct nfs4_opendata *opendata, struct nfs4_state *state) | |
587 | { | |
864472e9 | 588 | struct nfs4_state *newstate; |
864472e9 TM |
589 | int ret; |
590 | ||
591 | /* memory barrier prior to reading state->n_* */ | |
2ced46c2 | 592 | clear_bit(NFS_DELEGATED_STATE, &state->flags); |
864472e9 TM |
593 | smp_rmb(); |
594 | if (state->n_rdwr != 0) { | |
2ced46c2 | 595 | ret = nfs4_open_recover_helper(opendata, FMODE_READ|FMODE_WRITE, &newstate); |
864472e9 TM |
596 | if (ret != 0) |
597 | return ret; | |
2ced46c2 TM |
598 | if (newstate != state) |
599 | return -ESTALE; | |
864472e9 TM |
600 | } |
601 | if (state->n_wronly != 0) { | |
2ced46c2 | 602 | ret = nfs4_open_recover_helper(opendata, FMODE_WRITE, &newstate); |
864472e9 TM |
603 | if (ret != 0) |
604 | return ret; | |
2ced46c2 TM |
605 | if (newstate != state) |
606 | return -ESTALE; | |
864472e9 TM |
607 | } |
608 | if (state->n_rdonly != 0) { | |
2ced46c2 | 609 | ret = nfs4_open_recover_helper(opendata, FMODE_READ, &newstate); |
864472e9 TM |
610 | if (ret != 0) |
611 | return ret; | |
2ced46c2 TM |
612 | if (newstate != state) |
613 | return -ESTALE; | |
864472e9 | 614 | } |
1ac7e2fd TM |
615 | /* |
616 | * We may have performed cached opens for all three recoveries. | |
617 | * Check if we need to update the current stateid. | |
618 | */ | |
619 | if (test_bit(NFS_DELEGATED_STATE, &state->flags) == 0 && | |
620 | memcmp(state->stateid.data, state->open_stateid.data, sizeof(state->stateid.data)) != 0) { | |
8bda4e4c | 621 | write_seqlock(&state->seqlock); |
1ac7e2fd TM |
622 | if (test_bit(NFS_DELEGATED_STATE, &state->flags) == 0) |
623 | memcpy(state->stateid.data, state->open_stateid.data, sizeof(state->stateid.data)); | |
8bda4e4c | 624 | write_sequnlock(&state->seqlock); |
1ac7e2fd | 625 | } |
864472e9 TM |
626 | return 0; |
627 | } | |
628 | ||
1da177e4 LT |
629 | /* |
630 | * OPEN_RECLAIM: | |
631 | * reclaim state on the server after a reboot. | |
1da177e4 | 632 | */ |
539cd03a | 633 | static int _nfs4_do_open_reclaim(struct nfs_open_context *ctx, struct nfs4_state *state) |
1da177e4 | 634 | { |
1ac7e2fd | 635 | struct nfs_delegation *delegation; |
864472e9 TM |
636 | struct nfs4_opendata *opendata; |
637 | int delegation_type = 0; | |
1da177e4 LT |
638 | int status; |
639 | ||
6f220ed5 TM |
640 | opendata = nfs4_open_recoverdata_alloc(ctx, state); |
641 | if (IS_ERR(opendata)) | |
642 | return PTR_ERR(opendata); | |
864472e9 TM |
643 | opendata->o_arg.claim = NFS4_OPEN_CLAIM_PREVIOUS; |
644 | opendata->o_arg.fh = NFS_FH(state->inode); | |
1ac7e2fd TM |
645 | rcu_read_lock(); |
646 | delegation = rcu_dereference(NFS_I(state->inode)->delegation); | |
647 | if (delegation != NULL && (delegation->flags & NFS_DELEGATION_NEED_RECLAIM) != 0) | |
65bbf6bd | 648 | delegation_type = delegation->type; |
1ac7e2fd | 649 | rcu_read_unlock(); |
864472e9 TM |
650 | opendata->o_arg.u.delegation_type = delegation_type; |
651 | status = nfs4_open_recover(opendata, state); | |
c6d00e63 | 652 | nfs4_opendata_put(opendata); |
1da177e4 LT |
653 | return status; |
654 | } | |
655 | ||
539cd03a | 656 | static int nfs4_do_open_reclaim(struct nfs_open_context *ctx, struct nfs4_state *state) |
1da177e4 LT |
657 | { |
658 | struct nfs_server *server = NFS_SERVER(state->inode); | |
659 | struct nfs4_exception exception = { }; | |
660 | int err; | |
661 | do { | |
539cd03a | 662 | err = _nfs4_do_open_reclaim(ctx, state); |
202b50dc TM |
663 | if (err != -NFS4ERR_DELAY) |
664 | break; | |
665 | nfs4_handle_exception(server, err, &exception); | |
1da177e4 LT |
666 | } while (exception.retry); |
667 | return err; | |
668 | } | |
669 | ||
864472e9 TM |
670 | static int nfs4_open_reclaim(struct nfs4_state_owner *sp, struct nfs4_state *state) |
671 | { | |
672 | struct nfs_open_context *ctx; | |
673 | int ret; | |
674 | ||
675 | ctx = nfs4_state_find_open_context(state); | |
676 | if (IS_ERR(ctx)) | |
677 | return PTR_ERR(ctx); | |
539cd03a | 678 | ret = nfs4_do_open_reclaim(ctx, state); |
864472e9 TM |
679 | put_nfs_open_context(ctx); |
680 | return ret; | |
681 | } | |
682 | ||
13437e12 | 683 | static int _nfs4_open_delegation_recall(struct nfs_open_context *ctx, struct nfs4_state *state, const nfs4_stateid *stateid) |
1da177e4 | 684 | { |
e56e0b78 | 685 | struct nfs4_opendata *opendata; |
864472e9 | 686 | int ret; |
1da177e4 | 687 | |
6f220ed5 TM |
688 | opendata = nfs4_open_recoverdata_alloc(ctx, state); |
689 | if (IS_ERR(opendata)) | |
690 | return PTR_ERR(opendata); | |
e56e0b78 | 691 | opendata->o_arg.claim = NFS4_OPEN_CLAIM_DELEGATE_CUR; |
13437e12 | 692 | memcpy(opendata->o_arg.u.delegation.data, stateid->data, |
e56e0b78 | 693 | sizeof(opendata->o_arg.u.delegation.data)); |
864472e9 | 694 | ret = nfs4_open_recover(opendata, state); |
c6d00e63 | 695 | nfs4_opendata_put(opendata); |
864472e9 | 696 | return ret; |
1da177e4 LT |
697 | } |
698 | ||
13437e12 | 699 | int nfs4_open_delegation_recall(struct nfs_open_context *ctx, struct nfs4_state *state, const nfs4_stateid *stateid) |
1da177e4 LT |
700 | { |
701 | struct nfs4_exception exception = { }; | |
539cd03a | 702 | struct nfs_server *server = NFS_SERVER(state->inode); |
1da177e4 LT |
703 | int err; |
704 | do { | |
13437e12 | 705 | err = _nfs4_open_delegation_recall(ctx, state, stateid); |
1da177e4 LT |
706 | switch (err) { |
707 | case 0: | |
708 | return err; | |
709 | case -NFS4ERR_STALE_CLIENTID: | |
710 | case -NFS4ERR_STALE_STATEID: | |
711 | case -NFS4ERR_EXPIRED: | |
712 | /* Don't recall a delegation if it was lost */ | |
7539bbab | 713 | nfs4_schedule_state_recovery(server->nfs_client); |
1da177e4 LT |
714 | return err; |
715 | } | |
716 | err = nfs4_handle_exception(server, err, &exception); | |
717 | } while (exception.retry); | |
718 | return err; | |
719 | } | |
720 | ||
cdd4e68b | 721 | static void nfs4_open_confirm_prepare(struct rpc_task *task, void *calldata) |
1da177e4 | 722 | { |
cdd4e68b TM |
723 | struct nfs4_opendata *data = calldata; |
724 | struct rpc_message msg = { | |
725 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN_CONFIRM], | |
726 | .rpc_argp = &data->c_arg, | |
727 | .rpc_resp = &data->c_res, | |
728 | .rpc_cred = data->owner->so_cred, | |
1da177e4 | 729 | }; |
26e976a8 | 730 | data->timestamp = jiffies; |
cdd4e68b TM |
731 | rpc_call_setup(task, &msg, 0); |
732 | } | |
733 | ||
734 | static void nfs4_open_confirm_done(struct rpc_task *task, void *calldata) | |
735 | { | |
736 | struct nfs4_opendata *data = calldata; | |
737 | ||
738 | data->rpc_status = task->tk_status; | |
739 | if (RPC_ASSASSINATED(task)) | |
740 | return; | |
26e976a8 | 741 | if (data->rpc_status == 0) { |
cdd4e68b TM |
742 | memcpy(data->o_res.stateid.data, data->c_res.stateid.data, |
743 | sizeof(data->o_res.stateid.data)); | |
bb22629e | 744 | nfs_confirm_seqid(&data->owner->so_seqid, 0); |
26e976a8 | 745 | renew_lease(data->o_res.server, data->timestamp); |
3e309914 | 746 | data->rpc_done = 1; |
26e976a8 | 747 | } |
0f9f95e0 | 748 | nfs_increment_open_seqid(data->rpc_status, data->c_arg.seqid); |
cdd4e68b TM |
749 | } |
750 | ||
751 | static void nfs4_open_confirm_release(void *calldata) | |
752 | { | |
753 | struct nfs4_opendata *data = calldata; | |
754 | struct nfs4_state *state = NULL; | |
755 | ||
756 | /* If this request hasn't been cancelled, do nothing */ | |
757 | if (data->cancelled == 0) | |
758 | goto out_free; | |
759 | /* In case of error, no cleanup! */ | |
3e309914 | 760 | if (!data->rpc_done) |
cdd4e68b | 761 | goto out_free; |
cdd4e68b | 762 | state = nfs4_opendata_to_nfs4_state(data); |
1b370bc2 | 763 | if (!IS_ERR(state)) |
4a35bd41 | 764 | nfs4_close_state(&data->path, state, data->o_arg.open_flags); |
cdd4e68b | 765 | out_free: |
c6d00e63 | 766 | nfs4_opendata_put(data); |
cdd4e68b TM |
767 | } |
768 | ||
769 | static const struct rpc_call_ops nfs4_open_confirm_ops = { | |
770 | .rpc_call_prepare = nfs4_open_confirm_prepare, | |
771 | .rpc_call_done = nfs4_open_confirm_done, | |
772 | .rpc_release = nfs4_open_confirm_release, | |
773 | }; | |
774 | ||
775 | /* | |
776 | * Note: On error, nfs4_proc_open_confirm will free the struct nfs4_opendata | |
777 | */ | |
778 | static int _nfs4_proc_open_confirm(struct nfs4_opendata *data) | |
779 | { | |
780 | struct nfs_server *server = NFS_SERVER(data->dir->d_inode); | |
781 | struct rpc_task *task; | |
c970aa85 TM |
782 | struct rpc_task_setup task_setup_data = { |
783 | .rpc_client = server->client, | |
784 | .callback_ops = &nfs4_open_confirm_ops, | |
785 | .callback_data = data, | |
786 | .flags = RPC_TASK_ASYNC, | |
787 | }; | |
1da177e4 LT |
788 | int status; |
789 | ||
c6d00e63 | 790 | kref_get(&data->kref); |
3e309914 TM |
791 | data->rpc_done = 0; |
792 | data->rpc_status = 0; | |
c970aa85 | 793 | task = rpc_run_task(&task_setup_data); |
7a1218a2 | 794 | if (IS_ERR(task)) |
cdd4e68b | 795 | return PTR_ERR(task); |
cdd4e68b TM |
796 | status = nfs4_wait_for_completion_rpc_task(task); |
797 | if (status != 0) { | |
798 | data->cancelled = 1; | |
799 | smp_wmb(); | |
800 | } else | |
801 | status = data->rpc_status; | |
e6b3c4db | 802 | rpc_put_task(task); |
1da177e4 LT |
803 | return status; |
804 | } | |
805 | ||
24ac23ab | 806 | static void nfs4_open_prepare(struct rpc_task *task, void *calldata) |
1da177e4 | 807 | { |
24ac23ab TM |
808 | struct nfs4_opendata *data = calldata; |
809 | struct nfs4_state_owner *sp = data->owner; | |
1da177e4 LT |
810 | struct rpc_message msg = { |
811 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN], | |
24ac23ab TM |
812 | .rpc_argp = &data->o_arg, |
813 | .rpc_resp = &data->o_res, | |
1da177e4 LT |
814 | .rpc_cred = sp->so_cred, |
815 | }; | |
24ac23ab TM |
816 | |
817 | if (nfs_wait_on_sequence(data->o_arg.seqid, task) != 0) | |
818 | return; | |
aac00a8d TM |
819 | /* |
820 | * Check if we still need to send an OPEN call, or if we can use | |
821 | * a delegation instead. | |
822 | */ | |
823 | if (data->state != NULL) { | |
824 | struct nfs_delegation *delegation; | |
825 | ||
6ee41268 TM |
826 | if (can_open_cached(data->state, data->o_arg.open_flags & (FMODE_READ|FMODE_WRITE|O_EXCL))) |
827 | goto out_no_action; | |
aac00a8d TM |
828 | rcu_read_lock(); |
829 | delegation = rcu_dereference(NFS_I(data->state->inode)->delegation); | |
830 | if (delegation != NULL && | |
831 | (delegation->flags & NFS_DELEGATION_NEED_RECLAIM) == 0) { | |
832 | rcu_read_unlock(); | |
6ee41268 | 833 | goto out_no_action; |
aac00a8d TM |
834 | } |
835 | rcu_read_unlock(); | |
836 | } | |
24ac23ab | 837 | /* Update sequence id. */ |
9f958ab8 | 838 | data->o_arg.id = sp->so_owner_id.id; |
24ac23ab | 839 | data->o_arg.clientid = sp->so_client->cl_clientid; |
6f220ed5 | 840 | if (data->o_arg.claim == NFS4_OPEN_CLAIM_PREVIOUS) { |
864472e9 | 841 | msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN_NOATTR]; |
6f220ed5 TM |
842 | nfs_copy_fh(&data->o_res.fh, data->o_arg.fh); |
843 | } | |
26e976a8 | 844 | data->timestamp = jiffies; |
24ac23ab | 845 | rpc_call_setup(task, &msg, 0); |
6ee41268 TM |
846 | return; |
847 | out_no_action: | |
848 | task->tk_action = NULL; | |
849 | ||
24ac23ab | 850 | } |
1da177e4 | 851 | |
24ac23ab TM |
852 | static void nfs4_open_done(struct rpc_task *task, void *calldata) |
853 | { | |
854 | struct nfs4_opendata *data = calldata; | |
1da177e4 | 855 | |
24ac23ab TM |
856 | data->rpc_status = task->tk_status; |
857 | if (RPC_ASSASSINATED(task)) | |
858 | return; | |
859 | if (task->tk_status == 0) { | |
860 | switch (data->o_res.f_attr->mode & S_IFMT) { | |
6f926b5b TM |
861 | case S_IFREG: |
862 | break; | |
863 | case S_IFLNK: | |
24ac23ab | 864 | data->rpc_status = -ELOOP; |
6f926b5b TM |
865 | break; |
866 | case S_IFDIR: | |
24ac23ab | 867 | data->rpc_status = -EISDIR; |
6f926b5b TM |
868 | break; |
869 | default: | |
24ac23ab | 870 | data->rpc_status = -ENOTDIR; |
6f926b5b | 871 | } |
26e976a8 | 872 | renew_lease(data->o_res.server, data->timestamp); |
0f9f95e0 TM |
873 | if (!(data->o_res.rflags & NFS4_OPEN_RESULT_CONFIRM)) |
874 | nfs_confirm_seqid(&data->owner->so_seqid, 0); | |
6f926b5b | 875 | } |
24ac23ab | 876 | nfs_increment_open_seqid(data->rpc_status, data->o_arg.seqid); |
3e309914 | 877 | data->rpc_done = 1; |
24ac23ab | 878 | } |
6f926b5b | 879 | |
24ac23ab TM |
880 | static void nfs4_open_release(void *calldata) |
881 | { | |
882 | struct nfs4_opendata *data = calldata; | |
883 | struct nfs4_state *state = NULL; | |
884 | ||
885 | /* If this request hasn't been cancelled, do nothing */ | |
886 | if (data->cancelled == 0) | |
887 | goto out_free; | |
888 | /* In case of error, no cleanup! */ | |
3e309914 | 889 | if (data->rpc_status != 0 || !data->rpc_done) |
24ac23ab TM |
890 | goto out_free; |
891 | /* In case we need an open_confirm, no cleanup! */ | |
892 | if (data->o_res.rflags & NFS4_OPEN_RESULT_CONFIRM) | |
893 | goto out_free; | |
24ac23ab | 894 | state = nfs4_opendata_to_nfs4_state(data); |
1b370bc2 | 895 | if (!IS_ERR(state)) |
4a35bd41 | 896 | nfs4_close_state(&data->path, state, data->o_arg.open_flags); |
24ac23ab | 897 | out_free: |
c6d00e63 | 898 | nfs4_opendata_put(data); |
24ac23ab TM |
899 | } |
900 | ||
901 | static const struct rpc_call_ops nfs4_open_ops = { | |
902 | .rpc_call_prepare = nfs4_open_prepare, | |
903 | .rpc_call_done = nfs4_open_done, | |
904 | .rpc_release = nfs4_open_release, | |
905 | }; | |
906 | ||
907 | /* | |
908 | * Note: On error, nfs4_proc_open will free the struct nfs4_opendata | |
909 | */ | |
910 | static int _nfs4_proc_open(struct nfs4_opendata *data) | |
911 | { | |
912 | struct inode *dir = data->dir->d_inode; | |
913 | struct nfs_server *server = NFS_SERVER(dir); | |
914 | struct nfs_openargs *o_arg = &data->o_arg; | |
915 | struct nfs_openres *o_res = &data->o_res; | |
916 | struct rpc_task *task; | |
c970aa85 TM |
917 | struct rpc_task_setup task_setup_data = { |
918 | .rpc_client = server->client, | |
919 | .callback_ops = &nfs4_open_ops, | |
920 | .callback_data = data, | |
921 | .flags = RPC_TASK_ASYNC, | |
922 | }; | |
24ac23ab TM |
923 | int status; |
924 | ||
c6d00e63 | 925 | kref_get(&data->kref); |
3e309914 TM |
926 | data->rpc_done = 0; |
927 | data->rpc_status = 0; | |
2ced46c2 | 928 | data->cancelled = 0; |
c970aa85 | 929 | task = rpc_run_task(&task_setup_data); |
7a1218a2 | 930 | if (IS_ERR(task)) |
24ac23ab | 931 | return PTR_ERR(task); |
24ac23ab TM |
932 | status = nfs4_wait_for_completion_rpc_task(task); |
933 | if (status != 0) { | |
934 | data->cancelled = 1; | |
935 | smp_wmb(); | |
936 | } else | |
937 | status = data->rpc_status; | |
e6b3c4db | 938 | rpc_put_task(task); |
3e309914 | 939 | if (status != 0 || !data->rpc_done) |
24ac23ab TM |
940 | return status; |
941 | ||
9936781d TM |
942 | if (o_res->fh.size == 0) |
943 | _nfs4_proc_lookup(dir, o_arg->name, &o_res->fh, o_res->f_attr); | |
944 | ||
56ae19f3 TM |
945 | if (o_arg->open_flags & O_CREAT) { |
946 | update_changeattr(dir, &o_res->cinfo); | |
947 | nfs_post_op_update_inode(dir, o_res->dir_attr); | |
948 | } else | |
949 | nfs_refresh_inode(dir, o_res->dir_attr); | |
1da177e4 | 950 | if(o_res->rflags & NFS4_OPEN_RESULT_CONFIRM) { |
cdd4e68b | 951 | status = _nfs4_proc_open_confirm(data); |
1da177e4 | 952 | if (status != 0) |
24ac23ab | 953 | return status; |
1da177e4 LT |
954 | } |
955 | if (!(o_res->f_attr->valid & NFS_ATTR_FATTR)) | |
9936781d | 956 | _nfs4_proc_getattr(server, &o_res->fh, o_res->f_attr); |
24ac23ab | 957 | return 0; |
1da177e4 LT |
958 | } |
959 | ||
10afec90 | 960 | static int nfs4_recover_expired_lease(struct nfs_server *server) |
58d9714a | 961 | { |
7539bbab | 962 | struct nfs_client *clp = server->nfs_client; |
6b30954e | 963 | int ret; |
58d9714a | 964 | |
6b30954e TM |
965 | for (;;) { |
966 | ret = nfs4_wait_clnt_recover(server->client, clp); | |
967 | if (ret != 0) | |
968 | return ret; | |
969 | if (!test_and_clear_bit(NFS4CLNT_LEASE_EXPIRED, &clp->cl_state)) | |
970 | break; | |
58d9714a | 971 | nfs4_schedule_state_recovery(clp); |
6b30954e TM |
972 | } |
973 | return 0; | |
58d9714a TM |
974 | } |
975 | ||
1da177e4 LT |
976 | /* |
977 | * OPEN_EXPIRED: | |
978 | * reclaim state on the server after a network partition. | |
979 | * Assumes caller holds the appropriate lock | |
980 | */ | |
539cd03a | 981 | static int _nfs4_open_expired(struct nfs_open_context *ctx, struct nfs4_state *state) |
1da177e4 | 982 | { |
e56e0b78 | 983 | struct nfs4_opendata *opendata; |
864472e9 | 984 | int ret; |
1da177e4 | 985 | |
6f220ed5 TM |
986 | opendata = nfs4_open_recoverdata_alloc(ctx, state); |
987 | if (IS_ERR(opendata)) | |
988 | return PTR_ERR(opendata); | |
864472e9 TM |
989 | ret = nfs4_open_recover(opendata, state); |
990 | if (ret == -ESTALE) { | |
991 | /* Invalidate the state owner so we don't ever use it again */ | |
539cd03a TM |
992 | nfs4_drop_state_owner(state->owner); |
993 | d_drop(ctx->path.dentry); | |
1da177e4 | 994 | } |
c6d00e63 | 995 | nfs4_opendata_put(opendata); |
864472e9 | 996 | return ret; |
1da177e4 LT |
997 | } |
998 | ||
539cd03a | 999 | static inline int nfs4_do_open_expired(struct nfs_open_context *ctx, struct nfs4_state *state) |
202b50dc | 1000 | { |
539cd03a | 1001 | struct nfs_server *server = NFS_SERVER(state->inode); |
202b50dc TM |
1002 | struct nfs4_exception exception = { }; |
1003 | int err; | |
1004 | ||
1005 | do { | |
539cd03a | 1006 | err = _nfs4_open_expired(ctx, state); |
202b50dc TM |
1007 | if (err == -NFS4ERR_DELAY) |
1008 | nfs4_handle_exception(server, err, &exception); | |
1009 | } while (exception.retry); | |
1010 | return err; | |
1011 | } | |
1012 | ||
1da177e4 LT |
1013 | static int nfs4_open_expired(struct nfs4_state_owner *sp, struct nfs4_state *state) |
1014 | { | |
1da177e4 | 1015 | struct nfs_open_context *ctx; |
864472e9 | 1016 | int ret; |
1da177e4 | 1017 | |
864472e9 TM |
1018 | ctx = nfs4_state_find_open_context(state); |
1019 | if (IS_ERR(ctx)) | |
1020 | return PTR_ERR(ctx); | |
539cd03a | 1021 | ret = nfs4_do_open_expired(ctx, state); |
864472e9 TM |
1022 | put_nfs_open_context(ctx); |
1023 | return ret; | |
1da177e4 LT |
1024 | } |
1025 | ||
aa53ed54 JL |
1026 | /* |
1027 | * on an EXCLUSIVE create, the server should send back a bitmask with FATTR4-* | |
1028 | * fields corresponding to attributes that were used to store the verifier. | |
1029 | * Make sure we clobber those fields in the later setattr call | |
1030 | */ | |
1031 | static inline void nfs4_exclusive_attrset(struct nfs4_opendata *opendata, struct iattr *sattr) | |
1032 | { | |
1033 | if ((opendata->o_res.attrset[1] & FATTR4_WORD1_TIME_ACCESS) && | |
1034 | !(sattr->ia_valid & ATTR_ATIME_SET)) | |
1035 | sattr->ia_valid |= ATTR_ATIME; | |
1036 | ||
1037 | if ((opendata->o_res.attrset[1] & FATTR4_WORD1_TIME_MODIFY) && | |
1038 | !(sattr->ia_valid & ATTR_MTIME_SET)) | |
1039 | sattr->ia_valid |= ATTR_MTIME; | |
1040 | } | |
1041 | ||
1da177e4 | 1042 | /* |
24ac23ab | 1043 | * Returns a referenced nfs4_state |
1da177e4 | 1044 | */ |
ad389da7 | 1045 | static int _nfs4_do_open(struct inode *dir, struct path *path, int flags, struct iattr *sattr, struct rpc_cred *cred, struct nfs4_state **res) |
1da177e4 LT |
1046 | { |
1047 | struct nfs4_state_owner *sp; | |
1048 | struct nfs4_state *state = NULL; | |
1049 | struct nfs_server *server = NFS_SERVER(dir); | |
7539bbab | 1050 | struct nfs_client *clp = server->nfs_client; |
e56e0b78 | 1051 | struct nfs4_opendata *opendata; |
aac00a8d | 1052 | int status; |
1da177e4 LT |
1053 | |
1054 | /* Protect against reboot recovery conflicts */ | |
1da177e4 LT |
1055 | status = -ENOMEM; |
1056 | if (!(sp = nfs4_get_state_owner(server, cred))) { | |
1057 | dprintk("nfs4_do_open: nfs4_get_state_owner failed!\n"); | |
1058 | goto out_err; | |
1059 | } | |
58d9714a TM |
1060 | status = nfs4_recover_expired_lease(server); |
1061 | if (status != 0) | |
b4454fe1 | 1062 | goto err_put_state_owner; |
aac00a8d TM |
1063 | if (path->dentry->d_inode != NULL) |
1064 | nfs4_return_incompatible_delegation(path->dentry->d_inode, flags & (FMODE_READ|FMODE_WRITE)); | |
58d9714a TM |
1065 | down_read(&clp->cl_sem); |
1066 | status = -ENOMEM; | |
ad389da7 | 1067 | opendata = nfs4_opendata_alloc(path, sp, flags, sattr); |
e56e0b78 | 1068 | if (opendata == NULL) |
76723de0 | 1069 | goto err_release_rwsem; |
1da177e4 | 1070 | |
aac00a8d TM |
1071 | if (path->dentry->d_inode != NULL) |
1072 | opendata->state = nfs4_get_open_state(path->dentry->d_inode, sp); | |
1073 | ||
24ac23ab | 1074 | status = _nfs4_proc_open(opendata); |
1da177e4 | 1075 | if (status != 0) |
c6d00e63 | 1076 | goto err_opendata_put; |
1da177e4 | 1077 | |
aa53ed54 JL |
1078 | if (opendata->o_arg.open_flags & O_EXCL) |
1079 | nfs4_exclusive_attrset(opendata, sattr); | |
1080 | ||
24ac23ab | 1081 | state = nfs4_opendata_to_nfs4_state(opendata); |
1b370bc2 TM |
1082 | status = PTR_ERR(state); |
1083 | if (IS_ERR(state)) | |
c6d00e63 | 1084 | goto err_opendata_put; |
c6d00e63 | 1085 | nfs4_opendata_put(opendata); |
1da177e4 LT |
1086 | nfs4_put_state_owner(sp); |
1087 | up_read(&clp->cl_sem); | |
1088 | *res = state; | |
1089 | return 0; | |
c6d00e63 TM |
1090 | err_opendata_put: |
1091 | nfs4_opendata_put(opendata); | |
76723de0 TM |
1092 | err_release_rwsem: |
1093 | up_read(&clp->cl_sem); | |
e56e0b78 TM |
1094 | err_put_state_owner: |
1095 | nfs4_put_state_owner(sp); | |
1da177e4 | 1096 | out_err: |
1da177e4 LT |
1097 | *res = NULL; |
1098 | return status; | |
1099 | } | |
1100 | ||
1101 | ||
ad389da7 | 1102 | static struct nfs4_state *nfs4_do_open(struct inode *dir, struct path *path, int flags, struct iattr *sattr, struct rpc_cred *cred) |
1da177e4 LT |
1103 | { |
1104 | struct nfs4_exception exception = { }; | |
1105 | struct nfs4_state *res; | |
1106 | int status; | |
1107 | ||
1108 | do { | |
ad389da7 | 1109 | status = _nfs4_do_open(dir, path, flags, sattr, cred, &res); |
1da177e4 LT |
1110 | if (status == 0) |
1111 | break; | |
1112 | /* NOTE: BAD_SEQID means the server and client disagree about the | |
1113 | * book-keeping w.r.t. state-changing operations | |
1114 | * (OPEN/CLOSE/LOCK/LOCKU...) | |
1115 | * It is actually a sign of a bug on the client or on the server. | |
1116 | * | |
1117 | * If we receive a BAD_SEQID error in the particular case of | |
cee54fc9 | 1118 | * doing an OPEN, we assume that nfs_increment_open_seqid() will |
1da177e4 LT |
1119 | * have unhashed the old state_owner for us, and that we can |
1120 | * therefore safely retry using a new one. We should still warn | |
1121 | * the user though... | |
1122 | */ | |
1123 | if (status == -NFS4ERR_BAD_SEQID) { | |
6f43ddcc TM |
1124 | printk(KERN_WARNING "NFS: v4 server %s " |
1125 | " returned a bad sequence-id error!\n", | |
1126 | NFS_SERVER(dir)->nfs_client->cl_hostname); | |
1da177e4 LT |
1127 | exception.retry = 1; |
1128 | continue; | |
1129 | } | |
550f5747 TM |
1130 | /* |
1131 | * BAD_STATEID on OPEN means that the server cancelled our | |
1132 | * state before it received the OPEN_CONFIRM. | |
1133 | * Recover by retrying the request as per the discussion | |
1134 | * on Page 181 of RFC3530. | |
1135 | */ | |
1136 | if (status == -NFS4ERR_BAD_STATEID) { | |
1137 | exception.retry = 1; | |
1138 | continue; | |
1139 | } | |
aac00a8d TM |
1140 | if (status == -EAGAIN) { |
1141 | /* We must have found a delegation */ | |
1142 | exception.retry = 1; | |
1143 | continue; | |
1144 | } | |
1da177e4 LT |
1145 | res = ERR_PTR(nfs4_handle_exception(NFS_SERVER(dir), |
1146 | status, &exception)); | |
1147 | } while (exception.retry); | |
1148 | return res; | |
1149 | } | |
1150 | ||
3e4f6290 TM |
1151 | static int _nfs4_do_setattr(struct inode *inode, struct nfs_fattr *fattr, |
1152 | struct iattr *sattr, struct nfs4_state *state) | |
1da177e4 | 1153 | { |
3e4f6290 | 1154 | struct nfs_server *server = NFS_SERVER(inode); |
1da177e4 | 1155 | struct nfs_setattrargs arg = { |
3e4f6290 | 1156 | .fh = NFS_FH(inode), |
1da177e4 LT |
1157 | .iap = sattr, |
1158 | .server = server, | |
1159 | .bitmask = server->attr_bitmask, | |
1160 | }; | |
1161 | struct nfs_setattrres res = { | |
1162 | .fattr = fattr, | |
1163 | .server = server, | |
1164 | }; | |
1165 | struct rpc_message msg = { | |
1166 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SETATTR], | |
1167 | .rpc_argp = &arg, | |
1168 | .rpc_resp = &res, | |
1169 | }; | |
26e976a8 | 1170 | unsigned long timestamp = jiffies; |
65e4308d | 1171 | int status; |
1da177e4 | 1172 | |
0e574af1 | 1173 | nfs_fattr_init(fattr); |
1da177e4 | 1174 | |
3e4f6290 TM |
1175 | if (nfs4_copy_delegation_stateid(&arg.stateid, inode)) { |
1176 | /* Use that stateid */ | |
1177 | } else if (state != NULL) { | |
1da177e4 | 1178 | msg.rpc_cred = state->owner->so_cred; |
08e9eac4 TM |
1179 | nfs4_copy_stateid(&arg.stateid, state, current->files); |
1180 | } else | |
1da177e4 LT |
1181 | memcpy(&arg.stateid, &zero_stateid, sizeof(arg.stateid)); |
1182 | ||
65e4308d | 1183 | status = rpc_call_sync(server->client, &msg, 0); |
26e976a8 TM |
1184 | if (status == 0 && state != NULL) |
1185 | renew_lease(server, timestamp); | |
65e4308d | 1186 | return status; |
1da177e4 LT |
1187 | } |
1188 | ||
3e4f6290 TM |
1189 | static int nfs4_do_setattr(struct inode *inode, struct nfs_fattr *fattr, |
1190 | struct iattr *sattr, struct nfs4_state *state) | |
1da177e4 | 1191 | { |
3e4f6290 | 1192 | struct nfs_server *server = NFS_SERVER(inode); |
1da177e4 LT |
1193 | struct nfs4_exception exception = { }; |
1194 | int err; | |
1195 | do { | |
1196 | err = nfs4_handle_exception(server, | |
3e4f6290 | 1197 | _nfs4_do_setattr(inode, fattr, sattr, state), |
1da177e4 LT |
1198 | &exception); |
1199 | } while (exception.retry); | |
1200 | return err; | |
1201 | } | |
1202 | ||
1203 | struct nfs4_closedata { | |
4a35bd41 | 1204 | struct path path; |
1da177e4 LT |
1205 | struct inode *inode; |
1206 | struct nfs4_state *state; | |
1207 | struct nfs_closeargs arg; | |
1208 | struct nfs_closeres res; | |
516a6af6 | 1209 | struct nfs_fattr fattr; |
26e976a8 | 1210 | unsigned long timestamp; |
1da177e4 LT |
1211 | }; |
1212 | ||
963d8fe5 | 1213 | static void nfs4_free_closedata(void *data) |
9512135d | 1214 | { |
963d8fe5 TM |
1215 | struct nfs4_closedata *calldata = data; |
1216 | struct nfs4_state_owner *sp = calldata->state->owner; | |
9512135d TM |
1217 | |
1218 | nfs4_put_open_state(calldata->state); | |
1219 | nfs_free_seqid(calldata->arg.seqid); | |
9512135d | 1220 | nfs4_put_state_owner(sp); |
4a35bd41 TM |
1221 | dput(calldata->path.dentry); |
1222 | mntput(calldata->path.mnt); | |
9512135d TM |
1223 | kfree(calldata); |
1224 | } | |
1225 | ||
963d8fe5 | 1226 | static void nfs4_close_done(struct rpc_task *task, void *data) |
1da177e4 | 1227 | { |
963d8fe5 | 1228 | struct nfs4_closedata *calldata = data; |
1da177e4 | 1229 | struct nfs4_state *state = calldata->state; |
1da177e4 LT |
1230 | struct nfs_server *server = NFS_SERVER(calldata->inode); |
1231 | ||
4ce70ada TM |
1232 | if (RPC_ASSASSINATED(task)) |
1233 | return; | |
1da177e4 LT |
1234 | /* hmm. we are done with the inode, and in the process of freeing |
1235 | * the state_owner. we keep this around to process errors | |
1236 | */ | |
cee54fc9 | 1237 | nfs_increment_open_seqid(task->tk_status, calldata->arg.seqid); |
1da177e4 LT |
1238 | switch (task->tk_status) { |
1239 | case 0: | |
45328c35 | 1240 | nfs_set_open_stateid(state, &calldata->res.stateid, 0); |
26e976a8 | 1241 | renew_lease(server, calldata->timestamp); |
1da177e4 LT |
1242 | break; |
1243 | case -NFS4ERR_STALE_STATEID: | |
1244 | case -NFS4ERR_EXPIRED: | |
1da177e4 LT |
1245 | break; |
1246 | default: | |
1247 | if (nfs4_async_handle_error(task, server) == -EAGAIN) { | |
1248 | rpc_restart_call(task); | |
1249 | return; | |
1250 | } | |
1251 | } | |
516a6af6 | 1252 | nfs_refresh_inode(calldata->inode, calldata->res.fattr); |
1da177e4 LT |
1253 | } |
1254 | ||
4ce70ada | 1255 | static void nfs4_close_prepare(struct rpc_task *task, void *data) |
1da177e4 | 1256 | { |
4ce70ada | 1257 | struct nfs4_closedata *calldata = data; |
9512135d | 1258 | struct nfs4_state *state = calldata->state; |
1da177e4 LT |
1259 | struct rpc_message msg = { |
1260 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_CLOSE], | |
1261 | .rpc_argp = &calldata->arg, | |
1262 | .rpc_resp = &calldata->res, | |
9512135d | 1263 | .rpc_cred = state->owner->so_cred, |
1da177e4 | 1264 | }; |
003707c7 | 1265 | int clear_rd, clear_wr, clear_rdwr; |
9512135d | 1266 | |
963d8fe5 | 1267 | if (nfs_wait_on_sequence(calldata->arg.seqid, task) != 0) |
9512135d | 1268 | return; |
003707c7 | 1269 | |
003707c7 | 1270 | clear_rd = clear_wr = clear_rdwr = 0; |
4cecb76f | 1271 | spin_lock(&state->owner->so_lock); |
003707c7 | 1272 | /* Calculate the change in open mode */ |
e7616923 | 1273 | if (state->n_rdwr == 0) { |
003707c7 | 1274 | if (state->n_rdonly == 0) { |
003707c7 TM |
1275 | clear_rd |= test_and_clear_bit(NFS_O_RDONLY_STATE, &state->flags); |
1276 | clear_rdwr |= test_and_clear_bit(NFS_O_RDWR_STATE, &state->flags); | |
1277 | } | |
1278 | if (state->n_wronly == 0) { | |
003707c7 TM |
1279 | clear_wr |= test_and_clear_bit(NFS_O_WRONLY_STATE, &state->flags); |
1280 | clear_rdwr |= test_and_clear_bit(NFS_O_RDWR_STATE, &state->flags); | |
1281 | } | |
e7616923 | 1282 | } |
4cecb76f | 1283 | spin_unlock(&state->owner->so_lock); |
003707c7 | 1284 | if (!clear_rd && !clear_wr && !clear_rdwr) { |
963d8fe5 TM |
1285 | /* Note: exit _without_ calling nfs4_close_done */ |
1286 | task->tk_action = NULL; | |
9512135d TM |
1287 | return; |
1288 | } | |
516a6af6 | 1289 | nfs_fattr_init(calldata->res.fattr); |
45328c35 | 1290 | if (test_bit(NFS_O_RDONLY_STATE, &state->flags) != 0) { |
1da177e4 | 1291 | msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN_DOWNGRADE]; |
45328c35 TM |
1292 | calldata->arg.open_flags = FMODE_READ; |
1293 | } else if (test_bit(NFS_O_WRONLY_STATE, &state->flags) != 0) { | |
1294 | msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN_DOWNGRADE]; | |
1295 | calldata->arg.open_flags = FMODE_WRITE; | |
1296 | } | |
26e976a8 | 1297 | calldata->timestamp = jiffies; |
9512135d | 1298 | rpc_call_setup(task, &msg, 0); |
1da177e4 LT |
1299 | } |
1300 | ||
963d8fe5 | 1301 | static const struct rpc_call_ops nfs4_close_ops = { |
4ce70ada | 1302 | .rpc_call_prepare = nfs4_close_prepare, |
963d8fe5 TM |
1303 | .rpc_call_done = nfs4_close_done, |
1304 | .rpc_release = nfs4_free_closedata, | |
1305 | }; | |
1306 | ||
1da177e4 LT |
1307 | /* |
1308 | * It is possible for data to be read/written from a mem-mapped file | |
1309 | * after the sys_close call (which hits the vfs layer as a flush). | |
1310 | * This means that we can't safely call nfsv4 close on a file until | |
1311 | * the inode is cleared. This in turn means that we are not good | |
1312 | * NFSv4 citizens - we do not indicate to the server to update the file's | |
1313 | * share state even when we are done with one of the three share | |
1314 | * stateid's in the inode. | |
1315 | * | |
1316 | * NOTE: Caller must be holding the sp->so_owner semaphore! | |
1317 | */ | |
a49c3c77 | 1318 | int nfs4_do_close(struct path *path, struct nfs4_state *state, int wait) |
1da177e4 | 1319 | { |
4a35bd41 | 1320 | struct nfs_server *server = NFS_SERVER(state->inode); |
1da177e4 | 1321 | struct nfs4_closedata *calldata; |
b39e625b TM |
1322 | struct nfs4_state_owner *sp = state->owner; |
1323 | struct rpc_task *task; | |
c970aa85 TM |
1324 | struct rpc_task_setup task_setup_data = { |
1325 | .rpc_client = server->client, | |
1326 | .callback_ops = &nfs4_close_ops, | |
1327 | .flags = RPC_TASK_ASYNC, | |
1328 | }; | |
9512135d | 1329 | int status = -ENOMEM; |
1da177e4 | 1330 | |
9512135d | 1331 | calldata = kmalloc(sizeof(*calldata), GFP_KERNEL); |
1da177e4 | 1332 | if (calldata == NULL) |
9512135d | 1333 | goto out; |
4a35bd41 | 1334 | calldata->inode = state->inode; |
1da177e4 | 1335 | calldata->state = state; |
4a35bd41 | 1336 | calldata->arg.fh = NFS_FH(state->inode); |
003707c7 | 1337 | calldata->arg.stateid = &state->open_stateid; |
1da177e4 | 1338 | /* Serialization for the sequence id */ |
cee54fc9 | 1339 | calldata->arg.seqid = nfs_alloc_seqid(&state->owner->so_seqid); |
9512135d TM |
1340 | if (calldata->arg.seqid == NULL) |
1341 | goto out_free_calldata; | |
516a6af6 TM |
1342 | calldata->arg.bitmask = server->attr_bitmask; |
1343 | calldata->res.fattr = &calldata->fattr; | |
1344 | calldata->res.server = server; | |
4a35bd41 TM |
1345 | calldata->path.mnt = mntget(path->mnt); |
1346 | calldata->path.dentry = dget(path->dentry); | |
9512135d | 1347 | |
c970aa85 TM |
1348 | task_setup_data.callback_data = calldata; |
1349 | task = rpc_run_task(&task_setup_data); | |
b39e625b TM |
1350 | if (IS_ERR(task)) |
1351 | return PTR_ERR(task); | |
a49c3c77 TM |
1352 | status = 0; |
1353 | if (wait) | |
1354 | status = rpc_wait_for_completion_task(task); | |
b39e625b | 1355 | rpc_put_task(task); |
a49c3c77 | 1356 | return status; |
9512135d TM |
1357 | out_free_calldata: |
1358 | kfree(calldata); | |
1359 | out: | |
b39e625b TM |
1360 | nfs4_put_open_state(state); |
1361 | nfs4_put_state_owner(sp); | |
9512135d | 1362 | return status; |
1da177e4 LT |
1363 | } |
1364 | ||
4a35bd41 | 1365 | static int nfs4_intent_set_file(struct nameidata *nd, struct path *path, struct nfs4_state *state) |
02a913a7 TM |
1366 | { |
1367 | struct file *filp; | |
1b45c46c | 1368 | int ret; |
02a913a7 | 1369 | |
1b45c46c TM |
1370 | /* If the open_intent is for execute, we have an extra check to make */ |
1371 | if (nd->intent.open.flags & FMODE_EXEC) { | |
af22f94a | 1372 | ret = nfs_may_open(state->inode, |
1b45c46c TM |
1373 | state->owner->so_cred, |
1374 | nd->intent.open.flags); | |
1375 | if (ret < 0) | |
1376 | goto out_close; | |
1377 | } | |
4a35bd41 | 1378 | filp = lookup_instantiate_filp(nd, path->dentry, NULL); |
02a913a7 TM |
1379 | if (!IS_ERR(filp)) { |
1380 | struct nfs_open_context *ctx; | |
cd3758e3 | 1381 | ctx = nfs_file_open_context(filp); |
02a913a7 | 1382 | ctx->state = state; |
95cf959b TM |
1383 | return 0; |
1384 | } | |
1b45c46c TM |
1385 | ret = PTR_ERR(filp); |
1386 | out_close: | |
a49c3c77 | 1387 | nfs4_close_sync(path, state, nd->intent.open.flags); |
1b45c46c | 1388 | return ret; |
02a913a7 TM |
1389 | } |
1390 | ||
1391 | struct dentry * | |
1da177e4 LT |
1392 | nfs4_atomic_open(struct inode *dir, struct dentry *dentry, struct nameidata *nd) |
1393 | { | |
565277f6 | 1394 | struct dentry *parent; |
ad389da7 TM |
1395 | struct path path = { |
1396 | .mnt = nd->mnt, | |
1397 | .dentry = dentry, | |
1398 | }; | |
1da177e4 LT |
1399 | struct iattr attr; |
1400 | struct rpc_cred *cred; | |
1401 | struct nfs4_state *state; | |
02a913a7 | 1402 | struct dentry *res; |
1da177e4 LT |
1403 | |
1404 | if (nd->flags & LOOKUP_CREATE) { | |
1405 | attr.ia_mode = nd->intent.open.create_mode; | |
1406 | attr.ia_valid = ATTR_MODE; | |
1407 | if (!IS_POSIXACL(dir)) | |
1408 | attr.ia_mode &= ~current->fs->umask; | |
1409 | } else { | |
1410 | attr.ia_valid = 0; | |
1411 | BUG_ON(nd->intent.open.flags & O_CREAT); | |
1412 | } | |
1413 | ||
1f163415 | 1414 | cred = rpcauth_lookupcred(NFS_CLIENT(dir)->cl_auth, 0); |
1da177e4 | 1415 | if (IS_ERR(cred)) |
02a913a7 | 1416 | return (struct dentry *)cred; |
565277f6 TM |
1417 | parent = dentry->d_parent; |
1418 | /* Protect against concurrent sillydeletes */ | |
1419 | nfs_block_sillyrename(parent); | |
ad389da7 | 1420 | state = nfs4_do_open(dir, &path, nd->intent.open.flags, &attr, cred); |
1da177e4 | 1421 | put_rpccred(cred); |
02a913a7 | 1422 | if (IS_ERR(state)) { |
d75340cc | 1423 | if (PTR_ERR(state) == -ENOENT) { |
02a913a7 | 1424 | d_add(dentry, NULL); |
d75340cc TM |
1425 | nfs_set_verifier(dentry, nfs_save_change_attribute(dir)); |
1426 | } | |
565277f6 | 1427 | nfs_unblock_sillyrename(parent); |
02a913a7 TM |
1428 | return (struct dentry *)state; |
1429 | } | |
24ac23ab | 1430 | res = d_add_unique(dentry, igrab(state->inode)); |
02a913a7 | 1431 | if (res != NULL) |
deee9369 | 1432 | path.dentry = res; |
d75340cc | 1433 | nfs_set_verifier(path.dentry, nfs_save_change_attribute(dir)); |
565277f6 | 1434 | nfs_unblock_sillyrename(parent); |
4a35bd41 | 1435 | nfs4_intent_set_file(nd, &path, state); |
02a913a7 | 1436 | return res; |
1da177e4 LT |
1437 | } |
1438 | ||
1439 | int | |
02a913a7 | 1440 | nfs4_open_revalidate(struct inode *dir, struct dentry *dentry, int openflags, struct nameidata *nd) |
1da177e4 | 1441 | { |
ad389da7 TM |
1442 | struct path path = { |
1443 | .mnt = nd->mnt, | |
1444 | .dentry = dentry, | |
1445 | }; | |
1da177e4 LT |
1446 | struct rpc_cred *cred; |
1447 | struct nfs4_state *state; | |
1da177e4 | 1448 | |
1f163415 | 1449 | cred = rpcauth_lookupcred(NFS_CLIENT(dir)->cl_auth, 0); |
1da177e4 LT |
1450 | if (IS_ERR(cred)) |
1451 | return PTR_ERR(cred); | |
aac00a8d | 1452 | state = nfs4_do_open(dir, &path, openflags, NULL, cred); |
1da177e4 | 1453 | put_rpccred(cred); |
02a913a7 TM |
1454 | if (IS_ERR(state)) { |
1455 | switch (PTR_ERR(state)) { | |
1456 | case -EPERM: | |
1457 | case -EACCES: | |
1458 | case -EDQUOT: | |
1459 | case -ENOSPC: | |
1460 | case -EROFS: | |
1461 | lookup_instantiate_filp(nd, (struct dentry *)state, NULL); | |
1462 | return 1; | |
b87c0adf CL |
1463 | default: |
1464 | goto out_drop; | |
02a913a7 | 1465 | } |
02a913a7 | 1466 | } |
24ac23ab | 1467 | if (state->inode == dentry->d_inode) { |
d75340cc | 1468 | nfs_set_verifier(dentry, nfs_save_change_attribute(dir)); |
4a35bd41 | 1469 | nfs4_intent_set_file(nd, &path, state); |
1da177e4 LT |
1470 | return 1; |
1471 | } | |
a49c3c77 | 1472 | nfs4_close_sync(&path, state, openflags); |
02a913a7 TM |
1473 | out_drop: |
1474 | d_drop(dentry); | |
1da177e4 LT |
1475 | return 0; |
1476 | } | |
1477 | ||
1478 | ||
1479 | static int _nfs4_server_capabilities(struct nfs_server *server, struct nfs_fh *fhandle) | |
1480 | { | |
1481 | struct nfs4_server_caps_res res = {}; | |
1482 | struct rpc_message msg = { | |
1483 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SERVER_CAPS], | |
1484 | .rpc_argp = fhandle, | |
1485 | .rpc_resp = &res, | |
1486 | }; | |
1487 | int status; | |
1488 | ||
1489 | status = rpc_call_sync(server->client, &msg, 0); | |
1490 | if (status == 0) { | |
1491 | memcpy(server->attr_bitmask, res.attr_bitmask, sizeof(server->attr_bitmask)); | |
1492 | if (res.attr_bitmask[0] & FATTR4_WORD0_ACL) | |
1493 | server->caps |= NFS_CAP_ACLS; | |
1494 | if (res.has_links != 0) | |
1495 | server->caps |= NFS_CAP_HARDLINKS; | |
1496 | if (res.has_symlinks != 0) | |
1497 | server->caps |= NFS_CAP_SYMLINKS; | |
1498 | server->acl_bitmask = res.acl_bitmask; | |
1499 | } | |
1500 | return status; | |
1501 | } | |
1502 | ||
55a97593 | 1503 | int nfs4_server_capabilities(struct nfs_server *server, struct nfs_fh *fhandle) |
1da177e4 LT |
1504 | { |
1505 | struct nfs4_exception exception = { }; | |
1506 | int err; | |
1507 | do { | |
1508 | err = nfs4_handle_exception(server, | |
1509 | _nfs4_server_capabilities(server, fhandle), | |
1510 | &exception); | |
1511 | } while (exception.retry); | |
1512 | return err; | |
1513 | } | |
1514 | ||
1515 | static int _nfs4_lookup_root(struct nfs_server *server, struct nfs_fh *fhandle, | |
1516 | struct nfs_fsinfo *info) | |
1517 | { | |
1da177e4 LT |
1518 | struct nfs4_lookup_root_arg args = { |
1519 | .bitmask = nfs4_fattr_bitmap, | |
1520 | }; | |
1521 | struct nfs4_lookup_res res = { | |
1522 | .server = server, | |
0e574af1 | 1523 | .fattr = info->fattr, |
1da177e4 LT |
1524 | .fh = fhandle, |
1525 | }; | |
1526 | struct rpc_message msg = { | |
1527 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOOKUP_ROOT], | |
1528 | .rpc_argp = &args, | |
1529 | .rpc_resp = &res, | |
1530 | }; | |
0e574af1 | 1531 | nfs_fattr_init(info->fattr); |
1da177e4 LT |
1532 | return rpc_call_sync(server->client, &msg, 0); |
1533 | } | |
1534 | ||
1535 | static int nfs4_lookup_root(struct nfs_server *server, struct nfs_fh *fhandle, | |
1536 | struct nfs_fsinfo *info) | |
1537 | { | |
1538 | struct nfs4_exception exception = { }; | |
1539 | int err; | |
1540 | do { | |
1541 | err = nfs4_handle_exception(server, | |
1542 | _nfs4_lookup_root(server, fhandle, info), | |
1543 | &exception); | |
1544 | } while (exception.retry); | |
1545 | return err; | |
1546 | } | |
1547 | ||
54ceac45 DH |
1548 | /* |
1549 | * get the file handle for the "/" directory on the server | |
1550 | */ | |
1da177e4 | 1551 | static int nfs4_proc_get_root(struct nfs_server *server, struct nfs_fh *fhandle, |
54ceac45 | 1552 | struct nfs_fsinfo *info) |
1da177e4 | 1553 | { |
1da177e4 LT |
1554 | int status; |
1555 | ||
1da177e4 | 1556 | status = nfs4_lookup_root(server, fhandle, info); |
1da177e4 LT |
1557 | if (status == 0) |
1558 | status = nfs4_server_capabilities(server, fhandle); | |
1559 | if (status == 0) | |
1560 | status = nfs4_do_fsinfo(server, fhandle, info); | |
c12e87f4 | 1561 | return nfs4_map_errors(status); |
1da177e4 LT |
1562 | } |
1563 | ||
6b97fd3d MN |
1564 | /* |
1565 | * Get locations and (maybe) other attributes of a referral. | |
1566 | * Note that we'll actually follow the referral later when | |
1567 | * we detect fsid mismatch in inode revalidation | |
1568 | */ | |
56659e99 | 1569 | static int nfs4_get_referral(struct inode *dir, const struct qstr *name, struct nfs_fattr *fattr, struct nfs_fh *fhandle) |
6b97fd3d MN |
1570 | { |
1571 | int status = -ENOMEM; | |
1572 | struct page *page = NULL; | |
1573 | struct nfs4_fs_locations *locations = NULL; | |
6b97fd3d MN |
1574 | |
1575 | page = alloc_page(GFP_KERNEL); | |
1576 | if (page == NULL) | |
1577 | goto out; | |
1578 | locations = kmalloc(sizeof(struct nfs4_fs_locations), GFP_KERNEL); | |
1579 | if (locations == NULL) | |
1580 | goto out; | |
1581 | ||
c228fd3a | 1582 | status = nfs4_proc_fs_locations(dir, name, locations, page); |
6b97fd3d MN |
1583 | if (status != 0) |
1584 | goto out; | |
1585 | /* Make sure server returned a different fsid for the referral */ | |
1586 | if (nfs_fsid_equal(&NFS_SERVER(dir)->fsid, &locations->fattr.fsid)) { | |
1587 | dprintk("%s: server did not return a different fsid for a referral at %s\n", __FUNCTION__, name->name); | |
1588 | status = -EIO; | |
1589 | goto out; | |
1590 | } | |
1591 | ||
1592 | memcpy(fattr, &locations->fattr, sizeof(struct nfs_fattr)); | |
1593 | fattr->valid |= NFS_ATTR_FATTR_V4_REFERRAL; | |
1594 | if (!fattr->mode) | |
1595 | fattr->mode = S_IFDIR; | |
1596 | memset(fhandle, 0, sizeof(struct nfs_fh)); | |
1597 | out: | |
1598 | if (page) | |
1599 | __free_page(page); | |
1600 | if (locations) | |
1601 | kfree(locations); | |
1602 | return status; | |
1603 | } | |
1604 | ||
1da177e4 LT |
1605 | static int _nfs4_proc_getattr(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fattr *fattr) |
1606 | { | |
1607 | struct nfs4_getattr_arg args = { | |
1608 | .fh = fhandle, | |
1609 | .bitmask = server->attr_bitmask, | |
1610 | }; | |
1611 | struct nfs4_getattr_res res = { | |
1612 | .fattr = fattr, | |
1613 | .server = server, | |
1614 | }; | |
1615 | struct rpc_message msg = { | |
1616 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GETATTR], | |
1617 | .rpc_argp = &args, | |
1618 | .rpc_resp = &res, | |
1619 | }; | |
1620 | ||
0e574af1 | 1621 | nfs_fattr_init(fattr); |
1da177e4 LT |
1622 | return rpc_call_sync(server->client, &msg, 0); |
1623 | } | |
1624 | ||
1625 | static int nfs4_proc_getattr(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fattr *fattr) | |
1626 | { | |
1627 | struct nfs4_exception exception = { }; | |
1628 | int err; | |
1629 | do { | |
1630 | err = nfs4_handle_exception(server, | |
1631 | _nfs4_proc_getattr(server, fhandle, fattr), | |
1632 | &exception); | |
1633 | } while (exception.retry); | |
1634 | return err; | |
1635 | } | |
1636 | ||
1637 | /* | |
1638 | * The file is not closed if it is opened due to the a request to change | |
1639 | * the size of the file. The open call will not be needed once the | |
1640 | * VFS layer lookup-intents are implemented. | |
1641 | * | |
1642 | * Close is called when the inode is destroyed. | |
1643 | * If we haven't opened the file for O_WRONLY, we | |
1644 | * need to in the size_change case to obtain a stateid. | |
1645 | * | |
1646 | * Got race? | |
1647 | * Because OPEN is always done by name in nfsv4, it is | |
1648 | * possible that we opened a different file by the same | |
1649 | * name. We can recognize this race condition, but we | |
1650 | * can't do anything about it besides returning an error. | |
1651 | * | |
1652 | * This will be fixed with VFS changes (lookup-intent). | |
1653 | */ | |
1654 | static int | |
1655 | nfs4_proc_setattr(struct dentry *dentry, struct nfs_fattr *fattr, | |
1656 | struct iattr *sattr) | |
1657 | { | |
08e9eac4 TM |
1658 | struct rpc_cred *cred; |
1659 | struct inode *inode = dentry->d_inode; | |
d530838b TM |
1660 | struct nfs_open_context *ctx; |
1661 | struct nfs4_state *state = NULL; | |
1da177e4 LT |
1662 | int status; |
1663 | ||
0e574af1 | 1664 | nfs_fattr_init(fattr); |
1da177e4 | 1665 | |
1f163415 | 1666 | cred = rpcauth_lookupcred(NFS_CLIENT(inode)->cl_auth, 0); |
08e9eac4 TM |
1667 | if (IS_ERR(cred)) |
1668 | return PTR_ERR(cred); | |
d530838b TM |
1669 | |
1670 | /* Search for an existing open(O_WRITE) file */ | |
1671 | ctx = nfs_find_open_context(inode, cred, FMODE_WRITE); | |
1672 | if (ctx != NULL) | |
1673 | state = ctx->state; | |
08e9eac4 | 1674 | |
3e4f6290 | 1675 | status = nfs4_do_setattr(inode, fattr, sattr, state); |
65e4308d TM |
1676 | if (status == 0) |
1677 | nfs_setattr_update_inode(inode, sattr); | |
d530838b TM |
1678 | if (ctx != NULL) |
1679 | put_nfs_open_context(ctx); | |
08e9eac4 | 1680 | put_rpccred(cred); |
1da177e4 LT |
1681 | return status; |
1682 | } | |
1683 | ||
56659e99 TM |
1684 | static int _nfs4_proc_lookupfh(struct nfs_server *server, const struct nfs_fh *dirfh, |
1685 | const struct qstr *name, struct nfs_fh *fhandle, | |
2b3de441 DH |
1686 | struct nfs_fattr *fattr) |
1687 | { | |
1688 | int status; | |
1689 | struct nfs4_lookup_arg args = { | |
1690 | .bitmask = server->attr_bitmask, | |
1691 | .dir_fh = dirfh, | |
1692 | .name = name, | |
1693 | }; | |
1694 | struct nfs4_lookup_res res = { | |
1695 | .server = server, | |
1696 | .fattr = fattr, | |
1697 | .fh = fhandle, | |
1698 | }; | |
1699 | struct rpc_message msg = { | |
1700 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOOKUP], | |
1701 | .rpc_argp = &args, | |
1702 | .rpc_resp = &res, | |
1703 | }; | |
1704 | ||
1705 | nfs_fattr_init(fattr); | |
1706 | ||
1707 | dprintk("NFS call lookupfh %s\n", name->name); | |
1708 | status = rpc_call_sync(server->client, &msg, 0); | |
1709 | dprintk("NFS reply lookupfh: %d\n", status); | |
2b3de441 DH |
1710 | return status; |
1711 | } | |
1712 | ||
1713 | static int nfs4_proc_lookupfh(struct nfs_server *server, struct nfs_fh *dirfh, | |
1714 | struct qstr *name, struct nfs_fh *fhandle, | |
1715 | struct nfs_fattr *fattr) | |
1716 | { | |
1717 | struct nfs4_exception exception = { }; | |
1718 | int err; | |
1719 | do { | |
4e56e082 TM |
1720 | err = _nfs4_proc_lookupfh(server, dirfh, name, fhandle, fattr); |
1721 | /* FIXME: !!!! */ | |
1722 | if (err == -NFS4ERR_MOVED) { | |
1723 | err = -EREMOTE; | |
1724 | break; | |
1725 | } | |
1726 | err = nfs4_handle_exception(server, err, &exception); | |
2b3de441 DH |
1727 | } while (exception.retry); |
1728 | return err; | |
1729 | } | |
1730 | ||
56659e99 | 1731 | static int _nfs4_proc_lookup(struct inode *dir, const struct qstr *name, |
1da177e4 LT |
1732 | struct nfs_fh *fhandle, struct nfs_fattr *fattr) |
1733 | { | |
4e56e082 | 1734 | int status; |
1da177e4 LT |
1735 | |
1736 | dprintk("NFS call lookup %s\n", name->name); | |
4e56e082 | 1737 | status = _nfs4_proc_lookupfh(NFS_SERVER(dir), NFS_FH(dir), name, fhandle, fattr); |
6b97fd3d MN |
1738 | if (status == -NFS4ERR_MOVED) |
1739 | status = nfs4_get_referral(dir, name, fattr, fhandle); | |
1da177e4 LT |
1740 | dprintk("NFS reply lookup: %d\n", status); |
1741 | return status; | |
1742 | } | |
1743 | ||
1744 | static int nfs4_proc_lookup(struct inode *dir, struct qstr *name, struct nfs_fh *fhandle, struct nfs_fattr *fattr) | |
1745 | { | |
1746 | struct nfs4_exception exception = { }; | |
1747 | int err; | |
1748 | do { | |
1749 | err = nfs4_handle_exception(NFS_SERVER(dir), | |
1750 | _nfs4_proc_lookup(dir, name, fhandle, fattr), | |
1751 | &exception); | |
1752 | } while (exception.retry); | |
1753 | return err; | |
1754 | } | |
1755 | ||
1756 | static int _nfs4_proc_access(struct inode *inode, struct nfs_access_entry *entry) | |
1757 | { | |
76b32999 TM |
1758 | struct nfs_server *server = NFS_SERVER(inode); |
1759 | struct nfs_fattr fattr; | |
1da177e4 LT |
1760 | struct nfs4_accessargs args = { |
1761 | .fh = NFS_FH(inode), | |
76b32999 TM |
1762 | .bitmask = server->attr_bitmask, |
1763 | }; | |
1764 | struct nfs4_accessres res = { | |
1765 | .server = server, | |
1766 | .fattr = &fattr, | |
1da177e4 | 1767 | }; |
1da177e4 LT |
1768 | struct rpc_message msg = { |
1769 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_ACCESS], | |
1770 | .rpc_argp = &args, | |
1771 | .rpc_resp = &res, | |
1772 | .rpc_cred = entry->cred, | |
1773 | }; | |
1774 | int mode = entry->mask; | |
1775 | int status; | |
1776 | ||
1777 | /* | |
1778 | * Determine which access bits we want to ask for... | |
1779 | */ | |
1780 | if (mode & MAY_READ) | |
1781 | args.access |= NFS4_ACCESS_READ; | |
1782 | if (S_ISDIR(inode->i_mode)) { | |
1783 | if (mode & MAY_WRITE) | |
1784 | args.access |= NFS4_ACCESS_MODIFY | NFS4_ACCESS_EXTEND | NFS4_ACCESS_DELETE; | |
1785 | if (mode & MAY_EXEC) | |
1786 | args.access |= NFS4_ACCESS_LOOKUP; | |
1787 | } else { | |
1788 | if (mode & MAY_WRITE) | |
1789 | args.access |= NFS4_ACCESS_MODIFY | NFS4_ACCESS_EXTEND; | |
1790 | if (mode & MAY_EXEC) | |
1791 | args.access |= NFS4_ACCESS_EXECUTE; | |
1792 | } | |
76b32999 | 1793 | nfs_fattr_init(&fattr); |
1da177e4 LT |
1794 | status = rpc_call_sync(NFS_CLIENT(inode), &msg, 0); |
1795 | if (!status) { | |
1796 | entry->mask = 0; | |
1797 | if (res.access & NFS4_ACCESS_READ) | |
1798 | entry->mask |= MAY_READ; | |
1799 | if (res.access & (NFS4_ACCESS_MODIFY | NFS4_ACCESS_EXTEND | NFS4_ACCESS_DELETE)) | |
1800 | entry->mask |= MAY_WRITE; | |
1801 | if (res.access & (NFS4_ACCESS_LOOKUP|NFS4_ACCESS_EXECUTE)) | |
1802 | entry->mask |= MAY_EXEC; | |
76b32999 | 1803 | nfs_refresh_inode(inode, &fattr); |
1da177e4 LT |
1804 | } |
1805 | return status; | |
1806 | } | |
1807 | ||
1808 | static int nfs4_proc_access(struct inode *inode, struct nfs_access_entry *entry) | |
1809 | { | |
1810 | struct nfs4_exception exception = { }; | |
1811 | int err; | |
1812 | do { | |
1813 | err = nfs4_handle_exception(NFS_SERVER(inode), | |
1814 | _nfs4_proc_access(inode, entry), | |
1815 | &exception); | |
1816 | } while (exception.retry); | |
1817 | return err; | |
1818 | } | |
1819 | ||
1820 | /* | |
1821 | * TODO: For the time being, we don't try to get any attributes | |
1822 | * along with any of the zero-copy operations READ, READDIR, | |
1823 | * READLINK, WRITE. | |
1824 | * | |
1825 | * In the case of the first three, we want to put the GETATTR | |
1826 | * after the read-type operation -- this is because it is hard | |
1827 | * to predict the length of a GETATTR response in v4, and thus | |
1828 | * align the READ data correctly. This means that the GETATTR | |
1829 | * may end up partially falling into the page cache, and we should | |
1830 | * shift it into the 'tail' of the xdr_buf before processing. | |
1831 | * To do this efficiently, we need to know the total length | |
1832 | * of data received, which doesn't seem to be available outside | |
1833 | * of the RPC layer. | |
1834 | * | |
1835 | * In the case of WRITE, we also want to put the GETATTR after | |
1836 | * the operation -- in this case because we want to make sure | |
1837 | * we get the post-operation mtime and size. This means that | |
1838 | * we can't use xdr_encode_pages() as written: we need a variant | |
1839 | * of it which would leave room in the 'tail' iovec. | |
1840 | * | |
1841 | * Both of these changes to the XDR layer would in fact be quite | |
1842 | * minor, but I decided to leave them for a subsequent patch. | |
1843 | */ | |
1844 | static int _nfs4_proc_readlink(struct inode *inode, struct page *page, | |
1845 | unsigned int pgbase, unsigned int pglen) | |
1846 | { | |
1847 | struct nfs4_readlink args = { | |
1848 | .fh = NFS_FH(inode), | |
1849 | .pgbase = pgbase, | |
1850 | .pglen = pglen, | |
1851 | .pages = &page, | |
1852 | }; | |
1853 | struct rpc_message msg = { | |
1854 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_READLINK], | |
1855 | .rpc_argp = &args, | |
1856 | .rpc_resp = NULL, | |
1857 | }; | |
1858 | ||
1859 | return rpc_call_sync(NFS_CLIENT(inode), &msg, 0); | |
1860 | } | |
1861 | ||
1862 | static int nfs4_proc_readlink(struct inode *inode, struct page *page, | |
1863 | unsigned int pgbase, unsigned int pglen) | |
1864 | { | |
1865 | struct nfs4_exception exception = { }; | |
1866 | int err; | |
1867 | do { | |
1868 | err = nfs4_handle_exception(NFS_SERVER(inode), | |
1869 | _nfs4_proc_readlink(inode, page, pgbase, pglen), | |
1870 | &exception); | |
1871 | } while (exception.retry); | |
1872 | return err; | |
1873 | } | |
1874 | ||
1da177e4 LT |
1875 | /* |
1876 | * Got race? | |
1877 | * We will need to arrange for the VFS layer to provide an atomic open. | |
1878 | * Until then, this create/open method is prone to inefficiency and race | |
1879 | * conditions due to the lookup, create, and open VFS calls from sys_open() | |
1880 | * placed on the wire. | |
1881 | * | |
1882 | * Given the above sorry state of affairs, I'm simply sending an OPEN. | |
1883 | * The file will be opened again in the subsequent VFS open call | |
1884 | * (nfs4_proc_file_open). | |
1885 | * | |
1886 | * The open for read will just hang around to be used by any process that | |
1887 | * opens the file O_RDONLY. This will all be resolved with the VFS changes. | |
1888 | */ | |
1889 | ||
1890 | static int | |
1891 | nfs4_proc_create(struct inode *dir, struct dentry *dentry, struct iattr *sattr, | |
02a913a7 | 1892 | int flags, struct nameidata *nd) |
1da177e4 | 1893 | { |
ad389da7 TM |
1894 | struct path path = { |
1895 | .mnt = nd->mnt, | |
1896 | .dentry = dentry, | |
1897 | }; | |
1da177e4 LT |
1898 | struct nfs4_state *state; |
1899 | struct rpc_cred *cred; | |
1900 | int status = 0; | |
1901 | ||
1f163415 | 1902 | cred = rpcauth_lookupcred(NFS_CLIENT(dir)->cl_auth, 0); |
1da177e4 LT |
1903 | if (IS_ERR(cred)) { |
1904 | status = PTR_ERR(cred); | |
1905 | goto out; | |
1906 | } | |
ad389da7 | 1907 | state = nfs4_do_open(dir, &path, flags, sattr, cred); |
1da177e4 | 1908 | put_rpccred(cred); |
d4d9cdcb | 1909 | d_drop(dentry); |
1da177e4 LT |
1910 | if (IS_ERR(state)) { |
1911 | status = PTR_ERR(state); | |
1912 | goto out; | |
1913 | } | |
d4d9cdcb | 1914 | d_add(dentry, igrab(state->inode)); |
d75340cc | 1915 | nfs_set_verifier(dentry, nfs_save_change_attribute(dir)); |
1da177e4 LT |
1916 | if (flags & O_EXCL) { |
1917 | struct nfs_fattr fattr; | |
3e4f6290 | 1918 | status = nfs4_do_setattr(state->inode, &fattr, sattr, state); |
02a913a7 | 1919 | if (status == 0) |
65e4308d | 1920 | nfs_setattr_update_inode(state->inode, sattr); |
aa53ed54 | 1921 | nfs_post_op_update_inode(state->inode, &fattr); |
02a913a7 | 1922 | } |
ad389da7 | 1923 | if (status == 0 && (nd->flags & LOOKUP_OPEN) != 0) |
4a35bd41 | 1924 | status = nfs4_intent_set_file(nd, &path, state); |
02a913a7 | 1925 | else |
a49c3c77 | 1926 | nfs4_close_sync(&path, state, flags); |
1da177e4 LT |
1927 | out: |
1928 | return status; | |
1929 | } | |
1930 | ||
1931 | static int _nfs4_proc_remove(struct inode *dir, struct qstr *name) | |
1932 | { | |
16e42959 | 1933 | struct nfs_server *server = NFS_SERVER(dir); |
4fdc17b2 | 1934 | struct nfs_removeargs args = { |
1da177e4 | 1935 | .fh = NFS_FH(dir), |
4fdc17b2 TM |
1936 | .name.len = name->len, |
1937 | .name.name = name->name, | |
16e42959 TM |
1938 | .bitmask = server->attr_bitmask, |
1939 | }; | |
4fdc17b2 | 1940 | struct nfs_removeres res = { |
16e42959 | 1941 | .server = server, |
1da177e4 | 1942 | }; |
1da177e4 | 1943 | struct rpc_message msg = { |
4fdc17b2 TM |
1944 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_REMOVE], |
1945 | .rpc_argp = &args, | |
1946 | .rpc_resp = &res, | |
1da177e4 LT |
1947 | }; |
1948 | int status; | |
1949 | ||
4fdc17b2 | 1950 | nfs_fattr_init(&res.dir_attr); |
16e42959 TM |
1951 | status = rpc_call_sync(server->client, &msg, 0); |
1952 | if (status == 0) { | |
1953 | update_changeattr(dir, &res.cinfo); | |
4fdc17b2 | 1954 | nfs_post_op_update_inode(dir, &res.dir_attr); |
16e42959 | 1955 | } |
1da177e4 LT |
1956 | return status; |
1957 | } | |
1958 | ||
1959 | static int nfs4_proc_remove(struct inode *dir, struct qstr *name) | |
1960 | { | |
1961 | struct nfs4_exception exception = { }; | |
1962 | int err; | |
1963 | do { | |
1964 | err = nfs4_handle_exception(NFS_SERVER(dir), | |
1965 | _nfs4_proc_remove(dir, name), | |
1966 | &exception); | |
1967 | } while (exception.retry); | |
1968 | return err; | |
1969 | } | |
1970 | ||
e4eff1a6 | 1971 | static void nfs4_proc_unlink_setup(struct rpc_message *msg, struct inode *dir) |
1da177e4 | 1972 | { |
e4eff1a6 TM |
1973 | struct nfs_server *server = NFS_SERVER(dir); |
1974 | struct nfs_removeargs *args = msg->rpc_argp; | |
1975 | struct nfs_removeres *res = msg->rpc_resp; | |
1da177e4 | 1976 | |
e4eff1a6 TM |
1977 | args->bitmask = server->attr_bitmask; |
1978 | res->server = server; | |
1da177e4 | 1979 | msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_REMOVE]; |
1da177e4 LT |
1980 | } |
1981 | ||
e4eff1a6 | 1982 | static int nfs4_proc_unlink_done(struct rpc_task *task, struct inode *dir) |
1da177e4 | 1983 | { |
e4eff1a6 TM |
1984 | struct nfs_removeres *res = task->tk_msg.rpc_resp; |
1985 | ||
1986 | if (nfs4_async_handle_error(task, res->server) == -EAGAIN) | |
1987 | return 0; | |
1988 | update_changeattr(dir, &res->cinfo); | |
1989 | nfs_post_op_update_inode(dir, &res->dir_attr); | |
1990 | return 1; | |
1da177e4 LT |
1991 | } |
1992 | ||
1993 | static int _nfs4_proc_rename(struct inode *old_dir, struct qstr *old_name, | |
1994 | struct inode *new_dir, struct qstr *new_name) | |
1995 | { | |
6caf2c82 | 1996 | struct nfs_server *server = NFS_SERVER(old_dir); |
1da177e4 LT |
1997 | struct nfs4_rename_arg arg = { |
1998 | .old_dir = NFS_FH(old_dir), | |
1999 | .new_dir = NFS_FH(new_dir), | |
2000 | .old_name = old_name, | |
2001 | .new_name = new_name, | |
6caf2c82 TM |
2002 | .bitmask = server->attr_bitmask, |
2003 | }; | |
2004 | struct nfs_fattr old_fattr, new_fattr; | |
2005 | struct nfs4_rename_res res = { | |
2006 | .server = server, | |
2007 | .old_fattr = &old_fattr, | |
2008 | .new_fattr = &new_fattr, | |
1da177e4 | 2009 | }; |
1da177e4 LT |
2010 | struct rpc_message msg = { |
2011 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RENAME], | |
2012 | .rpc_argp = &arg, | |
2013 | .rpc_resp = &res, | |
2014 | }; | |
2015 | int status; | |
2016 | ||
6caf2c82 TM |
2017 | nfs_fattr_init(res.old_fattr); |
2018 | nfs_fattr_init(res.new_fattr); | |
2019 | status = rpc_call_sync(server->client, &msg, 0); | |
1da177e4 LT |
2020 | |
2021 | if (!status) { | |
2022 | update_changeattr(old_dir, &res.old_cinfo); | |
6caf2c82 | 2023 | nfs_post_op_update_inode(old_dir, res.old_fattr); |
1da177e4 | 2024 | update_changeattr(new_dir, &res.new_cinfo); |
6caf2c82 | 2025 | nfs_post_op_update_inode(new_dir, res.new_fattr); |
1da177e4 LT |
2026 | } |
2027 | return status; | |
2028 | } | |
2029 | ||
2030 | static int nfs4_proc_rename(struct inode *old_dir, struct qstr *old_name, | |
2031 | struct inode *new_dir, struct qstr *new_name) | |
2032 | { | |
2033 | struct nfs4_exception exception = { }; | |
2034 | int err; | |
2035 | do { | |
2036 | err = nfs4_handle_exception(NFS_SERVER(old_dir), | |
2037 | _nfs4_proc_rename(old_dir, old_name, | |
2038 | new_dir, new_name), | |
2039 | &exception); | |
2040 | } while (exception.retry); | |
2041 | return err; | |
2042 | } | |
2043 | ||
2044 | static int _nfs4_proc_link(struct inode *inode, struct inode *dir, struct qstr *name) | |
2045 | { | |
91ba2eee | 2046 | struct nfs_server *server = NFS_SERVER(inode); |
1da177e4 LT |
2047 | struct nfs4_link_arg arg = { |
2048 | .fh = NFS_FH(inode), | |
2049 | .dir_fh = NFS_FH(dir), | |
2050 | .name = name, | |
91ba2eee TM |
2051 | .bitmask = server->attr_bitmask, |
2052 | }; | |
2053 | struct nfs_fattr fattr, dir_attr; | |
2054 | struct nfs4_link_res res = { | |
2055 | .server = server, | |
2056 | .fattr = &fattr, | |
2057 | .dir_attr = &dir_attr, | |
1da177e4 | 2058 | }; |
1da177e4 LT |
2059 | struct rpc_message msg = { |
2060 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LINK], | |
2061 | .rpc_argp = &arg, | |
91ba2eee | 2062 | .rpc_resp = &res, |
1da177e4 LT |
2063 | }; |
2064 | int status; | |
2065 | ||
91ba2eee TM |
2066 | nfs_fattr_init(res.fattr); |
2067 | nfs_fattr_init(res.dir_attr); | |
2068 | status = rpc_call_sync(server->client, &msg, 0); | |
2069 | if (!status) { | |
2070 | update_changeattr(dir, &res.cinfo); | |
2071 | nfs_post_op_update_inode(dir, res.dir_attr); | |
73a3d07c | 2072 | nfs_post_op_update_inode(inode, res.fattr); |
91ba2eee | 2073 | } |
1da177e4 LT |
2074 | |
2075 | return status; | |
2076 | } | |
2077 | ||
2078 | static int nfs4_proc_link(struct inode *inode, struct inode *dir, struct qstr *name) | |
2079 | { | |
2080 | struct nfs4_exception exception = { }; | |
2081 | int err; | |
2082 | do { | |
2083 | err = nfs4_handle_exception(NFS_SERVER(inode), | |
2084 | _nfs4_proc_link(inode, dir, name), | |
2085 | &exception); | |
2086 | } while (exception.retry); | |
2087 | return err; | |
2088 | } | |
2089 | ||
4f390c15 | 2090 | static int _nfs4_proc_symlink(struct inode *dir, struct dentry *dentry, |
94a6d753 | 2091 | struct page *page, unsigned int len, struct iattr *sattr) |
1da177e4 LT |
2092 | { |
2093 | struct nfs_server *server = NFS_SERVER(dir); | |
4f390c15 CL |
2094 | struct nfs_fh fhandle; |
2095 | struct nfs_fattr fattr, dir_fattr; | |
1da177e4 LT |
2096 | struct nfs4_create_arg arg = { |
2097 | .dir_fh = NFS_FH(dir), | |
2098 | .server = server, | |
4f390c15 | 2099 | .name = &dentry->d_name, |
1da177e4 LT |
2100 | .attrs = sattr, |
2101 | .ftype = NF4LNK, | |
2102 | .bitmask = server->attr_bitmask, | |
2103 | }; | |
2104 | struct nfs4_create_res res = { | |
2105 | .server = server, | |
4f390c15 CL |
2106 | .fh = &fhandle, |
2107 | .fattr = &fattr, | |
56ae19f3 | 2108 | .dir_fattr = &dir_fattr, |
1da177e4 LT |
2109 | }; |
2110 | struct rpc_message msg = { | |
2111 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SYMLINK], | |
2112 | .rpc_argp = &arg, | |
2113 | .rpc_resp = &res, | |
2114 | }; | |
2115 | int status; | |
2116 | ||
94a6d753 | 2117 | if (len > NFS4_MAXPATHLEN) |
1da177e4 | 2118 | return -ENAMETOOLONG; |
4f390c15 | 2119 | |
94a6d753 CL |
2120 | arg.u.symlink.pages = &page; |
2121 | arg.u.symlink.len = len; | |
4f390c15 | 2122 | nfs_fattr_init(&fattr); |
56ae19f3 | 2123 | nfs_fattr_init(&dir_fattr); |
1da177e4 LT |
2124 | |
2125 | status = rpc_call_sync(NFS_CLIENT(dir), &msg, 0); | |
4f390c15 | 2126 | if (!status) { |
1da177e4 | 2127 | update_changeattr(dir, &res.dir_cinfo); |
4f390c15 CL |
2128 | nfs_post_op_update_inode(dir, res.dir_fattr); |
2129 | status = nfs_instantiate(dentry, &fhandle, &fattr); | |
2130 | } | |
1da177e4 LT |
2131 | return status; |
2132 | } | |
2133 | ||
4f390c15 | 2134 | static int nfs4_proc_symlink(struct inode *dir, struct dentry *dentry, |
94a6d753 | 2135 | struct page *page, unsigned int len, struct iattr *sattr) |
1da177e4 LT |
2136 | { |
2137 | struct nfs4_exception exception = { }; | |
2138 | int err; | |
2139 | do { | |
2140 | err = nfs4_handle_exception(NFS_SERVER(dir), | |
94a6d753 CL |
2141 | _nfs4_proc_symlink(dir, dentry, page, |
2142 | len, sattr), | |
1da177e4 LT |
2143 | &exception); |
2144 | } while (exception.retry); | |
2145 | return err; | |
2146 | } | |
2147 | ||
2148 | static int _nfs4_proc_mkdir(struct inode *dir, struct dentry *dentry, | |
2149 | struct iattr *sattr) | |
2150 | { | |
2151 | struct nfs_server *server = NFS_SERVER(dir); | |
2152 | struct nfs_fh fhandle; | |
56ae19f3 | 2153 | struct nfs_fattr fattr, dir_fattr; |
1da177e4 LT |
2154 | struct nfs4_create_arg arg = { |
2155 | .dir_fh = NFS_FH(dir), | |
2156 | .server = server, | |
2157 | .name = &dentry->d_name, | |
2158 | .attrs = sattr, | |
2159 | .ftype = NF4DIR, | |
2160 | .bitmask = server->attr_bitmask, | |
2161 | }; | |
2162 | struct nfs4_create_res res = { | |
2163 | .server = server, | |
2164 | .fh = &fhandle, | |
2165 | .fattr = &fattr, | |
56ae19f3 | 2166 | .dir_fattr = &dir_fattr, |
1da177e4 LT |
2167 | }; |
2168 | struct rpc_message msg = { | |
2169 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_CREATE], | |
2170 | .rpc_argp = &arg, | |
2171 | .rpc_resp = &res, | |
2172 | }; | |
2173 | int status; | |
2174 | ||
0e574af1 | 2175 | nfs_fattr_init(&fattr); |
56ae19f3 | 2176 | nfs_fattr_init(&dir_fattr); |
1da177e4 LT |
2177 | |
2178 | status = rpc_call_sync(NFS_CLIENT(dir), &msg, 0); | |
2179 | if (!status) { | |
2180 | update_changeattr(dir, &res.dir_cinfo); | |
56ae19f3 | 2181 | nfs_post_op_update_inode(dir, res.dir_fattr); |
1da177e4 LT |
2182 | status = nfs_instantiate(dentry, &fhandle, &fattr); |
2183 | } | |
2184 | return status; | |
2185 | } | |
2186 | ||
2187 | static int nfs4_proc_mkdir(struct inode *dir, struct dentry *dentry, | |
2188 | struct iattr *sattr) | |
2189 | { | |
2190 | struct nfs4_exception exception = { }; | |
2191 | int err; | |
2192 | do { | |
2193 | err = nfs4_handle_exception(NFS_SERVER(dir), | |
2194 | _nfs4_proc_mkdir(dir, dentry, sattr), | |
2195 | &exception); | |
2196 | } while (exception.retry); | |
2197 | return err; | |
2198 | } | |
2199 | ||
2200 | static int _nfs4_proc_readdir(struct dentry *dentry, struct rpc_cred *cred, | |
2201 | u64 cookie, struct page *page, unsigned int count, int plus) | |
2202 | { | |
2203 | struct inode *dir = dentry->d_inode; | |
2204 | struct nfs4_readdir_arg args = { | |
2205 | .fh = NFS_FH(dir), | |
2206 | .pages = &page, | |
2207 | .pgbase = 0, | |
2208 | .count = count, | |
2209 | .bitmask = NFS_SERVER(dentry->d_inode)->attr_bitmask, | |
2210 | }; | |
2211 | struct nfs4_readdir_res res; | |
2212 | struct rpc_message msg = { | |
2213 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_READDIR], | |
2214 | .rpc_argp = &args, | |
2215 | .rpc_resp = &res, | |
2216 | .rpc_cred = cred, | |
2217 | }; | |
2218 | int status; | |
2219 | ||
eadf4598 TM |
2220 | dprintk("%s: dentry = %s/%s, cookie = %Lu\n", __FUNCTION__, |
2221 | dentry->d_parent->d_name.name, | |
2222 | dentry->d_name.name, | |
2223 | (unsigned long long)cookie); | |
1da177e4 LT |
2224 | nfs4_setup_readdir(cookie, NFS_COOKIEVERF(dir), dentry, &args); |
2225 | res.pgbase = args.pgbase; | |
2226 | status = rpc_call_sync(NFS_CLIENT(dir), &msg, 0); | |
2227 | if (status == 0) | |
2228 | memcpy(NFS_COOKIEVERF(dir), res.verifier.data, NFS4_VERIFIER_SIZE); | |
c4812998 TM |
2229 | |
2230 | nfs_invalidate_atime(dir); | |
2231 | ||
eadf4598 | 2232 | dprintk("%s: returns %d\n", __FUNCTION__, status); |
1da177e4 LT |
2233 | return status; |
2234 | } | |
2235 | ||
2236 | static int nfs4_proc_readdir(struct dentry *dentry, struct rpc_cred *cred, | |
2237 | u64 cookie, struct page *page, unsigned int count, int plus) | |
2238 | { | |
2239 | struct nfs4_exception exception = { }; | |
2240 | int err; | |
2241 | do { | |
2242 | err = nfs4_handle_exception(NFS_SERVER(dentry->d_inode), | |
2243 | _nfs4_proc_readdir(dentry, cred, cookie, | |
2244 | page, count, plus), | |
2245 | &exception); | |
2246 | } while (exception.retry); | |
2247 | return err; | |
2248 | } | |
2249 | ||
2250 | static int _nfs4_proc_mknod(struct inode *dir, struct dentry *dentry, | |
2251 | struct iattr *sattr, dev_t rdev) | |
2252 | { | |
2253 | struct nfs_server *server = NFS_SERVER(dir); | |
2254 | struct nfs_fh fh; | |
56ae19f3 | 2255 | struct nfs_fattr fattr, dir_fattr; |
1da177e4 LT |
2256 | struct nfs4_create_arg arg = { |
2257 | .dir_fh = NFS_FH(dir), | |
2258 | .server = server, | |
2259 | .name = &dentry->d_name, | |
2260 | .attrs = sattr, | |
2261 | .bitmask = server->attr_bitmask, | |
2262 | }; | |
2263 | struct nfs4_create_res res = { | |
2264 | .server = server, | |
2265 | .fh = &fh, | |
2266 | .fattr = &fattr, | |
56ae19f3 | 2267 | .dir_fattr = &dir_fattr, |
1da177e4 LT |
2268 | }; |
2269 | struct rpc_message msg = { | |
2270 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_CREATE], | |
2271 | .rpc_argp = &arg, | |
2272 | .rpc_resp = &res, | |
2273 | }; | |
2274 | int status; | |
2275 | int mode = sattr->ia_mode; | |
2276 | ||
0e574af1 | 2277 | nfs_fattr_init(&fattr); |
56ae19f3 | 2278 | nfs_fattr_init(&dir_fattr); |
1da177e4 LT |
2279 | |
2280 | BUG_ON(!(sattr->ia_valid & ATTR_MODE)); | |
2281 | BUG_ON(!S_ISFIFO(mode) && !S_ISBLK(mode) && !S_ISCHR(mode) && !S_ISSOCK(mode)); | |
2282 | if (S_ISFIFO(mode)) | |
2283 | arg.ftype = NF4FIFO; | |
2284 | else if (S_ISBLK(mode)) { | |
2285 | arg.ftype = NF4BLK; | |
2286 | arg.u.device.specdata1 = MAJOR(rdev); | |
2287 | arg.u.device.specdata2 = MINOR(rdev); | |
2288 | } | |
2289 | else if (S_ISCHR(mode)) { | |
2290 | arg.ftype = NF4CHR; | |
2291 | arg.u.device.specdata1 = MAJOR(rdev); | |
2292 | arg.u.device.specdata2 = MINOR(rdev); | |
2293 | } | |
2294 | else | |
2295 | arg.ftype = NF4SOCK; | |
2296 | ||
2297 | status = rpc_call_sync(NFS_CLIENT(dir), &msg, 0); | |
2298 | if (status == 0) { | |
2299 | update_changeattr(dir, &res.dir_cinfo); | |
56ae19f3 | 2300 | nfs_post_op_update_inode(dir, res.dir_fattr); |
1da177e4 LT |
2301 | status = nfs_instantiate(dentry, &fh, &fattr); |
2302 | } | |
2303 | return status; | |
2304 | } | |
2305 | ||
2306 | static int nfs4_proc_mknod(struct inode *dir, struct dentry *dentry, | |
2307 | struct iattr *sattr, dev_t rdev) | |
2308 | { | |
2309 | struct nfs4_exception exception = { }; | |
2310 | int err; | |
2311 | do { | |
2312 | err = nfs4_handle_exception(NFS_SERVER(dir), | |
2313 | _nfs4_proc_mknod(dir, dentry, sattr, rdev), | |
2314 | &exception); | |
2315 | } while (exception.retry); | |
2316 | return err; | |
2317 | } | |
2318 | ||
2319 | static int _nfs4_proc_statfs(struct nfs_server *server, struct nfs_fh *fhandle, | |
2320 | struct nfs_fsstat *fsstat) | |
2321 | { | |
2322 | struct nfs4_statfs_arg args = { | |
2323 | .fh = fhandle, | |
2324 | .bitmask = server->attr_bitmask, | |
2325 | }; | |
2326 | struct rpc_message msg = { | |
2327 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_STATFS], | |
2328 | .rpc_argp = &args, | |
2329 | .rpc_resp = fsstat, | |
2330 | }; | |
2331 | ||
0e574af1 | 2332 | nfs_fattr_init(fsstat->fattr); |
1da177e4 LT |
2333 | return rpc_call_sync(server->client, &msg, 0); |
2334 | } | |
2335 | ||
2336 | static int nfs4_proc_statfs(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fsstat *fsstat) | |
2337 | { | |
2338 | struct nfs4_exception exception = { }; | |
2339 | int err; | |
2340 | do { | |
2341 | err = nfs4_handle_exception(server, | |
2342 | _nfs4_proc_statfs(server, fhandle, fsstat), | |
2343 | &exception); | |
2344 | } while (exception.retry); | |
2345 | return err; | |
2346 | } | |
2347 | ||
2348 | static int _nfs4_do_fsinfo(struct nfs_server *server, struct nfs_fh *fhandle, | |
2349 | struct nfs_fsinfo *fsinfo) | |
2350 | { | |
2351 | struct nfs4_fsinfo_arg args = { | |
2352 | .fh = fhandle, | |
2353 | .bitmask = server->attr_bitmask, | |
2354 | }; | |
2355 | struct rpc_message msg = { | |
2356 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_FSINFO], | |
2357 | .rpc_argp = &args, | |
2358 | .rpc_resp = fsinfo, | |
2359 | }; | |
2360 | ||
2361 | return rpc_call_sync(server->client, &msg, 0); | |
2362 | } | |
2363 | ||
2364 | static int nfs4_do_fsinfo(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fsinfo *fsinfo) | |
2365 | { | |
2366 | struct nfs4_exception exception = { }; | |
2367 | int err; | |
2368 | ||
2369 | do { | |
2370 | err = nfs4_handle_exception(server, | |
2371 | _nfs4_do_fsinfo(server, fhandle, fsinfo), | |
2372 | &exception); | |
2373 | } while (exception.retry); | |
2374 | return err; | |
2375 | } | |
2376 | ||
2377 | static int nfs4_proc_fsinfo(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fsinfo *fsinfo) | |
2378 | { | |
0e574af1 | 2379 | nfs_fattr_init(fsinfo->fattr); |
1da177e4 LT |
2380 | return nfs4_do_fsinfo(server, fhandle, fsinfo); |
2381 | } | |
2382 | ||
2383 | static int _nfs4_proc_pathconf(struct nfs_server *server, struct nfs_fh *fhandle, | |
2384 | struct nfs_pathconf *pathconf) | |
2385 | { | |
2386 | struct nfs4_pathconf_arg args = { | |
2387 | .fh = fhandle, | |
2388 | .bitmask = server->attr_bitmask, | |
2389 | }; | |
2390 | struct rpc_message msg = { | |
2391 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_PATHCONF], | |
2392 | .rpc_argp = &args, | |
2393 | .rpc_resp = pathconf, | |
2394 | }; | |
2395 | ||
2396 | /* None of the pathconf attributes are mandatory to implement */ | |
2397 | if ((args.bitmask[0] & nfs4_pathconf_bitmap[0]) == 0) { | |
2398 | memset(pathconf, 0, sizeof(*pathconf)); | |
2399 | return 0; | |
2400 | } | |
2401 | ||
0e574af1 | 2402 | nfs_fattr_init(pathconf->fattr); |
1da177e4 LT |
2403 | return rpc_call_sync(server->client, &msg, 0); |
2404 | } | |
2405 | ||
2406 | static int nfs4_proc_pathconf(struct nfs_server *server, struct nfs_fh *fhandle, | |
2407 | struct nfs_pathconf *pathconf) | |
2408 | { | |
2409 | struct nfs4_exception exception = { }; | |
2410 | int err; | |
2411 | ||
2412 | do { | |
2413 | err = nfs4_handle_exception(server, | |
2414 | _nfs4_proc_pathconf(server, fhandle, pathconf), | |
2415 | &exception); | |
2416 | } while (exception.retry); | |
2417 | return err; | |
2418 | } | |
2419 | ||
ec06c096 | 2420 | static int nfs4_read_done(struct rpc_task *task, struct nfs_read_data *data) |
1da177e4 | 2421 | { |
ec06c096 | 2422 | struct nfs_server *server = NFS_SERVER(data->inode); |
1da177e4 | 2423 | |
ec06c096 | 2424 | if (nfs4_async_handle_error(task, server) == -EAGAIN) { |
1da177e4 | 2425 | rpc_restart_call(task); |
ec06c096 | 2426 | return -EAGAIN; |
1da177e4 | 2427 | } |
8850df99 TM |
2428 | |
2429 | nfs_invalidate_atime(data->inode); | |
1da177e4 | 2430 | if (task->tk_status > 0) |
ec06c096 TM |
2431 | renew_lease(server, data->timestamp); |
2432 | return 0; | |
1da177e4 LT |
2433 | } |
2434 | ||
ec06c096 | 2435 | static void nfs4_proc_read_setup(struct nfs_read_data *data) |
1da177e4 | 2436 | { |
1da177e4 LT |
2437 | struct rpc_message msg = { |
2438 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_READ], | |
2439 | .rpc_argp = &data->args, | |
2440 | .rpc_resp = &data->res, | |
2441 | .rpc_cred = data->cred, | |
2442 | }; | |
1da177e4 LT |
2443 | |
2444 | data->timestamp = jiffies; | |
2445 | ||
ec06c096 | 2446 | rpc_call_setup(&data->task, &msg, 0); |
1da177e4 LT |
2447 | } |
2448 | ||
788e7a89 | 2449 | static int nfs4_write_done(struct rpc_task *task, struct nfs_write_data *data) |
1da177e4 | 2450 | { |
1da177e4 LT |
2451 | struct inode *inode = data->inode; |
2452 | ||
2453 | if (nfs4_async_handle_error(task, NFS_SERVER(inode)) == -EAGAIN) { | |
2454 | rpc_restart_call(task); | |
788e7a89 | 2455 | return -EAGAIN; |
1da177e4 | 2456 | } |
4f9838c7 | 2457 | if (task->tk_status >= 0) { |
1da177e4 | 2458 | renew_lease(NFS_SERVER(inode), data->timestamp); |
70ca8852 | 2459 | nfs_post_op_update_inode_force_wcc(inode, data->res.fattr); |
4f9838c7 | 2460 | } |
788e7a89 | 2461 | return 0; |
1da177e4 LT |
2462 | } |
2463 | ||
788e7a89 | 2464 | static void nfs4_proc_write_setup(struct nfs_write_data *data, int how) |
1da177e4 | 2465 | { |
1da177e4 LT |
2466 | struct rpc_message msg = { |
2467 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_WRITE], | |
2468 | .rpc_argp = &data->args, | |
2469 | .rpc_resp = &data->res, | |
2470 | .rpc_cred = data->cred, | |
2471 | }; | |
2472 | struct inode *inode = data->inode; | |
4f9838c7 | 2473 | struct nfs_server *server = NFS_SERVER(inode); |
1da177e4 | 2474 | int stable; |
1da177e4 LT |
2475 | |
2476 | if (how & FLUSH_STABLE) { | |
2477 | if (!NFS_I(inode)->ncommit) | |
2478 | stable = NFS_FILE_SYNC; | |
2479 | else | |
2480 | stable = NFS_DATA_SYNC; | |
2481 | } else | |
2482 | stable = NFS_UNSTABLE; | |
2483 | data->args.stable = stable; | |
4f9838c7 TM |
2484 | data->args.bitmask = server->attr_bitmask; |
2485 | data->res.server = server; | |
1da177e4 LT |
2486 | |
2487 | data->timestamp = jiffies; | |
2488 | ||
1da177e4 | 2489 | /* Finalize the task. */ |
788e7a89 | 2490 | rpc_call_setup(&data->task, &msg, 0); |
1da177e4 LT |
2491 | } |
2492 | ||
788e7a89 | 2493 | static int nfs4_commit_done(struct rpc_task *task, struct nfs_write_data *data) |
1da177e4 | 2494 | { |
1da177e4 LT |
2495 | struct inode *inode = data->inode; |
2496 | ||
2497 | if (nfs4_async_handle_error(task, NFS_SERVER(inode)) == -EAGAIN) { | |
2498 | rpc_restart_call(task); | |
788e7a89 | 2499 | return -EAGAIN; |
1da177e4 | 2500 | } |
9e08a3c5 | 2501 | nfs_refresh_inode(inode, data->res.fattr); |
788e7a89 | 2502 | return 0; |
1da177e4 LT |
2503 | } |
2504 | ||
788e7a89 | 2505 | static void nfs4_proc_commit_setup(struct nfs_write_data *data, int how) |
1da177e4 | 2506 | { |
1da177e4 LT |
2507 | struct rpc_message msg = { |
2508 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_COMMIT], | |
2509 | .rpc_argp = &data->args, | |
2510 | .rpc_resp = &data->res, | |
2511 | .rpc_cred = data->cred, | |
2512 | }; | |
788e7a89 | 2513 | struct nfs_server *server = NFS_SERVER(data->inode); |
1da177e4 | 2514 | |
4f9838c7 TM |
2515 | data->args.bitmask = server->attr_bitmask; |
2516 | data->res.server = server; | |
2517 | ||
788e7a89 | 2518 | rpc_call_setup(&data->task, &msg, 0); |
1da177e4 LT |
2519 | } |
2520 | ||
2521 | /* | |
2522 | * nfs4_proc_async_renew(): This is not one of the nfs_rpc_ops; it is a special | |
2523 | * standalone procedure for queueing an asynchronous RENEW. | |
2524 | */ | |
963d8fe5 | 2525 | static void nfs4_renew_done(struct rpc_task *task, void *data) |
1da177e4 | 2526 | { |
adfa6f98 | 2527 | struct nfs_client *clp = (struct nfs_client *)task->tk_msg.rpc_argp; |
963d8fe5 | 2528 | unsigned long timestamp = (unsigned long)data; |
1da177e4 LT |
2529 | |
2530 | if (task->tk_status < 0) { | |
2531 | switch (task->tk_status) { | |
2532 | case -NFS4ERR_STALE_CLIENTID: | |
2533 | case -NFS4ERR_EXPIRED: | |
2534 | case -NFS4ERR_CB_PATH_DOWN: | |
2535 | nfs4_schedule_state_recovery(clp); | |
2536 | } | |
2537 | return; | |
2538 | } | |
2539 | spin_lock(&clp->cl_lock); | |
2540 | if (time_before(clp->cl_last_renewal,timestamp)) | |
2541 | clp->cl_last_renewal = timestamp; | |
2542 | spin_unlock(&clp->cl_lock); | |
2543 | } | |
2544 | ||
963d8fe5 TM |
2545 | static const struct rpc_call_ops nfs4_renew_ops = { |
2546 | .rpc_call_done = nfs4_renew_done, | |
2547 | }; | |
2548 | ||
adfa6f98 | 2549 | int nfs4_proc_async_renew(struct nfs_client *clp, struct rpc_cred *cred) |
1da177e4 LT |
2550 | { |
2551 | struct rpc_message msg = { | |
2552 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RENEW], | |
2553 | .rpc_argp = clp, | |
b4454fe1 | 2554 | .rpc_cred = cred, |
1da177e4 LT |
2555 | }; |
2556 | ||
2557 | return rpc_call_async(clp->cl_rpcclient, &msg, RPC_TASK_SOFT, | |
963d8fe5 | 2558 | &nfs4_renew_ops, (void *)jiffies); |
1da177e4 LT |
2559 | } |
2560 | ||
adfa6f98 | 2561 | int nfs4_proc_renew(struct nfs_client *clp, struct rpc_cred *cred) |
1da177e4 LT |
2562 | { |
2563 | struct rpc_message msg = { | |
2564 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RENEW], | |
2565 | .rpc_argp = clp, | |
b4454fe1 | 2566 | .rpc_cred = cred, |
1da177e4 LT |
2567 | }; |
2568 | unsigned long now = jiffies; | |
2569 | int status; | |
2570 | ||
2571 | status = rpc_call_sync(clp->cl_rpcclient, &msg, 0); | |
2572 | if (status < 0) | |
2573 | return status; | |
2574 | spin_lock(&clp->cl_lock); | |
2575 | if (time_before(clp->cl_last_renewal,now)) | |
2576 | clp->cl_last_renewal = now; | |
2577 | spin_unlock(&clp->cl_lock); | |
2578 | return 0; | |
2579 | } | |
2580 | ||
aa1870af BF |
2581 | static inline int nfs4_server_supports_acls(struct nfs_server *server) |
2582 | { | |
2583 | return (server->caps & NFS_CAP_ACLS) | |
2584 | && (server->acl_bitmask & ACL4_SUPPORT_ALLOW_ACL) | |
2585 | && (server->acl_bitmask & ACL4_SUPPORT_DENY_ACL); | |
2586 | } | |
2587 | ||
2588 | /* Assuming that XATTR_SIZE_MAX is a multiple of PAGE_CACHE_SIZE, and that | |
2589 | * it's OK to put sizeof(void) * (XATTR_SIZE_MAX/PAGE_CACHE_SIZE) bytes on | |
2590 | * the stack. | |
2591 | */ | |
2592 | #define NFS4ACL_MAXPAGES (XATTR_SIZE_MAX >> PAGE_CACHE_SHIFT) | |
2593 | ||
2594 | static void buf_to_pages(const void *buf, size_t buflen, | |
2595 | struct page **pages, unsigned int *pgbase) | |
2596 | { | |
2597 | const void *p = buf; | |
2598 | ||
2599 | *pgbase = offset_in_page(buf); | |
2600 | p -= *pgbase; | |
2601 | while (p < buf + buflen) { | |
2602 | *(pages++) = virt_to_page(p); | |
2603 | p += PAGE_CACHE_SIZE; | |
2604 | } | |
2605 | } | |
2606 | ||
e50a1c2e BF |
2607 | struct nfs4_cached_acl { |
2608 | int cached; | |
2609 | size_t len; | |
3e9d4154 | 2610 | char data[0]; |
e50a1c2e BF |
2611 | }; |
2612 | ||
2613 | static void nfs4_set_cached_acl(struct inode *inode, struct nfs4_cached_acl *acl) | |
2614 | { | |
2615 | struct nfs_inode *nfsi = NFS_I(inode); | |
2616 | ||
2617 | spin_lock(&inode->i_lock); | |
2618 | kfree(nfsi->nfs4_acl); | |
2619 | nfsi->nfs4_acl = acl; | |
2620 | spin_unlock(&inode->i_lock); | |
2621 | } | |
2622 | ||
2623 | static void nfs4_zap_acl_attr(struct inode *inode) | |
2624 | { | |
2625 | nfs4_set_cached_acl(inode, NULL); | |
2626 | } | |
2627 | ||
2628 | static inline ssize_t nfs4_read_cached_acl(struct inode *inode, char *buf, size_t buflen) | |
2629 | { | |
2630 | struct nfs_inode *nfsi = NFS_I(inode); | |
2631 | struct nfs4_cached_acl *acl; | |
2632 | int ret = -ENOENT; | |
2633 | ||
2634 | spin_lock(&inode->i_lock); | |
2635 | acl = nfsi->nfs4_acl; | |
2636 | if (acl == NULL) | |
2637 | goto out; | |
2638 | if (buf == NULL) /* user is just asking for length */ | |
2639 | goto out_len; | |
2640 | if (acl->cached == 0) | |
2641 | goto out; | |
2642 | ret = -ERANGE; /* see getxattr(2) man page */ | |
2643 | if (acl->len > buflen) | |
2644 | goto out; | |
2645 | memcpy(buf, acl->data, acl->len); | |
2646 | out_len: | |
2647 | ret = acl->len; | |
2648 | out: | |
2649 | spin_unlock(&inode->i_lock); | |
2650 | return ret; | |
2651 | } | |
2652 | ||
2653 | static void nfs4_write_cached_acl(struct inode *inode, const char *buf, size_t acl_len) | |
2654 | { | |
2655 | struct nfs4_cached_acl *acl; | |
2656 | ||
2657 | if (buf && acl_len <= PAGE_SIZE) { | |
2658 | acl = kmalloc(sizeof(*acl) + acl_len, GFP_KERNEL); | |
2659 | if (acl == NULL) | |
2660 | goto out; | |
2661 | acl->cached = 1; | |
2662 | memcpy(acl->data, buf, acl_len); | |
2663 | } else { | |
2664 | acl = kmalloc(sizeof(*acl), GFP_KERNEL); | |
2665 | if (acl == NULL) | |
2666 | goto out; | |
2667 | acl->cached = 0; | |
2668 | } | |
2669 | acl->len = acl_len; | |
2670 | out: | |
2671 | nfs4_set_cached_acl(inode, acl); | |
2672 | } | |
2673 | ||
16b4289c | 2674 | static ssize_t __nfs4_get_acl_uncached(struct inode *inode, void *buf, size_t buflen) |
aa1870af | 2675 | { |
aa1870af BF |
2676 | struct page *pages[NFS4ACL_MAXPAGES]; |
2677 | struct nfs_getaclargs args = { | |
2678 | .fh = NFS_FH(inode), | |
2679 | .acl_pages = pages, | |
2680 | .acl_len = buflen, | |
2681 | }; | |
2682 | size_t resp_len = buflen; | |
e50a1c2e | 2683 | void *resp_buf; |
aa1870af BF |
2684 | struct rpc_message msg = { |
2685 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GETACL], | |
2686 | .rpc_argp = &args, | |
2687 | .rpc_resp = &resp_len, | |
2688 | }; | |
e50a1c2e | 2689 | struct page *localpage = NULL; |
aa1870af BF |
2690 | int ret; |
2691 | ||
e50a1c2e BF |
2692 | if (buflen < PAGE_SIZE) { |
2693 | /* As long as we're doing a round trip to the server anyway, | |
2694 | * let's be prepared for a page of acl data. */ | |
2695 | localpage = alloc_page(GFP_KERNEL); | |
2696 | resp_buf = page_address(localpage); | |
2697 | if (localpage == NULL) | |
2698 | return -ENOMEM; | |
2699 | args.acl_pages[0] = localpage; | |
2700 | args.acl_pgbase = 0; | |
1d95db8e | 2701 | resp_len = args.acl_len = PAGE_SIZE; |
e50a1c2e BF |
2702 | } else { |
2703 | resp_buf = buf; | |
2704 | buf_to_pages(buf, buflen, args.acl_pages, &args.acl_pgbase); | |
2705 | } | |
aa1870af | 2706 | ret = rpc_call_sync(NFS_CLIENT(inode), &msg, 0); |
e50a1c2e BF |
2707 | if (ret) |
2708 | goto out_free; | |
2709 | if (resp_len > args.acl_len) | |
2710 | nfs4_write_cached_acl(inode, NULL, resp_len); | |
2711 | else | |
2712 | nfs4_write_cached_acl(inode, resp_buf, resp_len); | |
2713 | if (buf) { | |
2714 | ret = -ERANGE; | |
2715 | if (resp_len > buflen) | |
2716 | goto out_free; | |
2717 | if (localpage) | |
2718 | memcpy(buf, resp_buf, resp_len); | |
2719 | } | |
2720 | ret = resp_len; | |
2721 | out_free: | |
2722 | if (localpage) | |
2723 | __free_page(localpage); | |
aa1870af BF |
2724 | return ret; |
2725 | } | |
2726 | ||
16b4289c TM |
2727 | static ssize_t nfs4_get_acl_uncached(struct inode *inode, void *buf, size_t buflen) |
2728 | { | |
2729 | struct nfs4_exception exception = { }; | |
2730 | ssize_t ret; | |
2731 | do { | |
2732 | ret = __nfs4_get_acl_uncached(inode, buf, buflen); | |
2733 | if (ret >= 0) | |
2734 | break; | |
2735 | ret = nfs4_handle_exception(NFS_SERVER(inode), ret, &exception); | |
2736 | } while (exception.retry); | |
2737 | return ret; | |
2738 | } | |
2739 | ||
e50a1c2e BF |
2740 | static ssize_t nfs4_proc_get_acl(struct inode *inode, void *buf, size_t buflen) |
2741 | { | |
2742 | struct nfs_server *server = NFS_SERVER(inode); | |
2743 | int ret; | |
2744 | ||
2745 | if (!nfs4_server_supports_acls(server)) | |
2746 | return -EOPNOTSUPP; | |
2747 | ret = nfs_revalidate_inode(server, inode); | |
2748 | if (ret < 0) | |
2749 | return ret; | |
2750 | ret = nfs4_read_cached_acl(inode, buf, buflen); | |
2751 | if (ret != -ENOENT) | |
2752 | return ret; | |
2753 | return nfs4_get_acl_uncached(inode, buf, buflen); | |
2754 | } | |
2755 | ||
16b4289c | 2756 | static int __nfs4_proc_set_acl(struct inode *inode, const void *buf, size_t buflen) |
4b580ee3 BF |
2757 | { |
2758 | struct nfs_server *server = NFS_SERVER(inode); | |
2759 | struct page *pages[NFS4ACL_MAXPAGES]; | |
2760 | struct nfs_setaclargs arg = { | |
2761 | .fh = NFS_FH(inode), | |
2762 | .acl_pages = pages, | |
2763 | .acl_len = buflen, | |
2764 | }; | |
2765 | struct rpc_message msg = { | |
2766 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SETACL], | |
2767 | .rpc_argp = &arg, | |
2768 | .rpc_resp = NULL, | |
2769 | }; | |
2770 | int ret; | |
2771 | ||
2772 | if (!nfs4_server_supports_acls(server)) | |
2773 | return -EOPNOTSUPP; | |
642ac549 | 2774 | nfs_inode_return_delegation(inode); |
4b580ee3 | 2775 | buf_to_pages(buf, buflen, arg.acl_pages, &arg.acl_pgbase); |
1f163415 | 2776 | ret = rpc_call_sync(NFS_CLIENT(inode), &msg, 0); |
08efa202 | 2777 | nfs_zap_caches(inode); |
4b580ee3 BF |
2778 | return ret; |
2779 | } | |
2780 | ||
16b4289c TM |
2781 | static int nfs4_proc_set_acl(struct inode *inode, const void *buf, size_t buflen) |
2782 | { | |
2783 | struct nfs4_exception exception = { }; | |
2784 | int err; | |
2785 | do { | |
2786 | err = nfs4_handle_exception(NFS_SERVER(inode), | |
2787 | __nfs4_proc_set_acl(inode, buf, buflen), | |
2788 | &exception); | |
2789 | } while (exception.retry); | |
2790 | return err; | |
2791 | } | |
2792 | ||
1da177e4 | 2793 | static int |
faf5f49c | 2794 | nfs4_async_handle_error(struct rpc_task *task, const struct nfs_server *server) |
1da177e4 | 2795 | { |
7539bbab | 2796 | struct nfs_client *clp = server->nfs_client; |
1da177e4 LT |
2797 | |
2798 | if (!clp || task->tk_status >= 0) | |
2799 | return 0; | |
2800 | switch(task->tk_status) { | |
2801 | case -NFS4ERR_STALE_CLIENTID: | |
2802 | case -NFS4ERR_STALE_STATEID: | |
2803 | case -NFS4ERR_EXPIRED: | |
2804 | rpc_sleep_on(&clp->cl_rpcwaitq, task, NULL, NULL); | |
2805 | nfs4_schedule_state_recovery(clp); | |
433fbe4c | 2806 | if (test_bit(NFS4CLNT_STATE_RECOVER, &clp->cl_state) == 0) |
1da177e4 LT |
2807 | rpc_wake_up_task(task); |
2808 | task->tk_status = 0; | |
2809 | return -EAGAIN; | |
1da177e4 | 2810 | case -NFS4ERR_DELAY: |
006ea73e CL |
2811 | nfs_inc_server_stats((struct nfs_server *) server, |
2812 | NFSIOS_DELAY); | |
2813 | case -NFS4ERR_GRACE: | |
1da177e4 LT |
2814 | rpc_delay(task, NFS4_POLL_RETRY_MAX); |
2815 | task->tk_status = 0; | |
2816 | return -EAGAIN; | |
2817 | case -NFS4ERR_OLD_STATEID: | |
2818 | task->tk_status = 0; | |
2819 | return -EAGAIN; | |
2820 | } | |
2821 | task->tk_status = nfs4_map_errors(task->tk_status); | |
2822 | return 0; | |
2823 | } | |
2824 | ||
433fbe4c TM |
2825 | static int nfs4_wait_bit_interruptible(void *word) |
2826 | { | |
2827 | if (signal_pending(current)) | |
2828 | return -ERESTARTSYS; | |
2829 | schedule(); | |
2830 | return 0; | |
2831 | } | |
2832 | ||
adfa6f98 | 2833 | static int nfs4_wait_clnt_recover(struct rpc_clnt *clnt, struct nfs_client *clp) |
1da177e4 | 2834 | { |
1da177e4 | 2835 | sigset_t oldset; |
433fbe4c | 2836 | int res; |
1da177e4 LT |
2837 | |
2838 | might_sleep(); | |
2839 | ||
e148582e TM |
2840 | rwsem_acquire(&clp->cl_sem.dep_map, 0, 0, _RET_IP_); |
2841 | ||
1da177e4 | 2842 | rpc_clnt_sigmask(clnt, &oldset); |
433fbe4c TM |
2843 | res = wait_on_bit(&clp->cl_state, NFS4CLNT_STATE_RECOVER, |
2844 | nfs4_wait_bit_interruptible, | |
2845 | TASK_INTERRUPTIBLE); | |
1da177e4 | 2846 | rpc_clnt_sigunmask(clnt, &oldset); |
e148582e TM |
2847 | |
2848 | rwsem_release(&clp->cl_sem.dep_map, 1, _RET_IP_); | |
1da177e4 LT |
2849 | return res; |
2850 | } | |
2851 | ||
2852 | static int nfs4_delay(struct rpc_clnt *clnt, long *timeout) | |
2853 | { | |
2854 | sigset_t oldset; | |
2855 | int res = 0; | |
2856 | ||
2857 | might_sleep(); | |
2858 | ||
2859 | if (*timeout <= 0) | |
2860 | *timeout = NFS4_POLL_RETRY_MIN; | |
2861 | if (*timeout > NFS4_POLL_RETRY_MAX) | |
2862 | *timeout = NFS4_POLL_RETRY_MAX; | |
2863 | rpc_clnt_sigmask(clnt, &oldset); | |
2864 | if (clnt->cl_intr) { | |
041e0e3b | 2865 | schedule_timeout_interruptible(*timeout); |
1da177e4 LT |
2866 | if (signalled()) |
2867 | res = -ERESTARTSYS; | |
041e0e3b NA |
2868 | } else |
2869 | schedule_timeout_uninterruptible(*timeout); | |
1da177e4 LT |
2870 | rpc_clnt_sigunmask(clnt, &oldset); |
2871 | *timeout <<= 1; | |
2872 | return res; | |
2873 | } | |
2874 | ||
2875 | /* This is the error handling routine for processes that are allowed | |
2876 | * to sleep. | |
2877 | */ | |
10afec90 | 2878 | static int nfs4_handle_exception(const struct nfs_server *server, int errorcode, struct nfs4_exception *exception) |
1da177e4 | 2879 | { |
7539bbab | 2880 | struct nfs_client *clp = server->nfs_client; |
1da177e4 LT |
2881 | int ret = errorcode; |
2882 | ||
2883 | exception->retry = 0; | |
2884 | switch(errorcode) { | |
2885 | case 0: | |
2886 | return 0; | |
2887 | case -NFS4ERR_STALE_CLIENTID: | |
2888 | case -NFS4ERR_STALE_STATEID: | |
2889 | case -NFS4ERR_EXPIRED: | |
433fbe4c | 2890 | nfs4_schedule_state_recovery(clp); |
1da177e4 LT |
2891 | ret = nfs4_wait_clnt_recover(server->client, clp); |
2892 | if (ret == 0) | |
2893 | exception->retry = 1; | |
2894 | break; | |
c514983d | 2895 | case -NFS4ERR_FILE_OPEN: |
1da177e4 LT |
2896 | case -NFS4ERR_GRACE: |
2897 | case -NFS4ERR_DELAY: | |
2898 | ret = nfs4_delay(server->client, &exception->timeout); | |
2c56617d TM |
2899 | if (ret != 0) |
2900 | break; | |
1da177e4 | 2901 | case -NFS4ERR_OLD_STATEID: |
2c56617d | 2902 | exception->retry = 1; |
1da177e4 LT |
2903 | } |
2904 | /* We failed to handle the error */ | |
2905 | return nfs4_map_errors(ret); | |
2906 | } | |
2907 | ||
adfa6f98 | 2908 | int nfs4_proc_setclientid(struct nfs_client *clp, u32 program, unsigned short port, struct rpc_cred *cred) |
1da177e4 LT |
2909 | { |
2910 | nfs4_verifier sc_verifier; | |
2911 | struct nfs4_setclientid setclientid = { | |
2912 | .sc_verifier = &sc_verifier, | |
2913 | .sc_prog = program, | |
2914 | }; | |
2915 | struct rpc_message msg = { | |
2916 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SETCLIENTID], | |
2917 | .rpc_argp = &setclientid, | |
2918 | .rpc_resp = clp, | |
286d7d6a | 2919 | .rpc_cred = cred, |
1da177e4 | 2920 | }; |
bc4785cd | 2921 | __be32 *p; |
1da177e4 LT |
2922 | int loop = 0; |
2923 | int status; | |
2924 | ||
bc4785cd | 2925 | p = (__be32*)sc_verifier.data; |
1da177e4 LT |
2926 | *p++ = htonl((u32)clp->cl_boot_time.tv_sec); |
2927 | *p = htonl((u32)clp->cl_boot_time.tv_nsec); | |
2928 | ||
2929 | for(;;) { | |
2930 | setclientid.sc_name_len = scnprintf(setclientid.sc_name, | |
2931 | sizeof(setclientid.sc_name), "%s/%u.%u.%u.%u %s %u", | |
24c8dbbb | 2932 | clp->cl_ipaddr, NIPQUAD(clp->cl_addr.sin_addr), |
286d7d6a | 2933 | cred->cr_ops->cr_name, |
1da177e4 LT |
2934 | clp->cl_id_uniquifier); |
2935 | setclientid.sc_netid_len = scnprintf(setclientid.sc_netid, | |
2936 | sizeof(setclientid.sc_netid), "tcp"); | |
2937 | setclientid.sc_uaddr_len = scnprintf(setclientid.sc_uaddr, | |
2938 | sizeof(setclientid.sc_uaddr), "%s.%d.%d", | |
2939 | clp->cl_ipaddr, port >> 8, port & 255); | |
2940 | ||
2941 | status = rpc_call_sync(clp->cl_rpcclient, &msg, 0); | |
2942 | if (status != -NFS4ERR_CLID_INUSE) | |
2943 | break; | |
2944 | if (signalled()) | |
2945 | break; | |
2946 | if (loop++ & 1) | |
2947 | ssleep(clp->cl_lease_time + 1); | |
2948 | else | |
2949 | if (++clp->cl_id_uniquifier == 0) | |
2950 | break; | |
2951 | } | |
2952 | return status; | |
2953 | } | |
2954 | ||
adfa6f98 | 2955 | static int _nfs4_proc_setclientid_confirm(struct nfs_client *clp, struct rpc_cred *cred) |
1da177e4 LT |
2956 | { |
2957 | struct nfs_fsinfo fsinfo; | |
2958 | struct rpc_message msg = { | |
2959 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SETCLIENTID_CONFIRM], | |
2960 | .rpc_argp = clp, | |
2961 | .rpc_resp = &fsinfo, | |
286d7d6a | 2962 | .rpc_cred = cred, |
1da177e4 LT |
2963 | }; |
2964 | unsigned long now; | |
2965 | int status; | |
2966 | ||
2967 | now = jiffies; | |
2968 | status = rpc_call_sync(clp->cl_rpcclient, &msg, 0); | |
2969 | if (status == 0) { | |
2970 | spin_lock(&clp->cl_lock); | |
2971 | clp->cl_lease_time = fsinfo.lease_time * HZ; | |
2972 | clp->cl_last_renewal = now; | |
58d9714a | 2973 | clear_bit(NFS4CLNT_LEASE_EXPIRED, &clp->cl_state); |
1da177e4 LT |
2974 | spin_unlock(&clp->cl_lock); |
2975 | } | |
2976 | return status; | |
2977 | } | |
2978 | ||
adfa6f98 | 2979 | int nfs4_proc_setclientid_confirm(struct nfs_client *clp, struct rpc_cred *cred) |
51581f3b TM |
2980 | { |
2981 | long timeout; | |
2982 | int err; | |
2983 | do { | |
2984 | err = _nfs4_proc_setclientid_confirm(clp, cred); | |
2985 | switch (err) { | |
2986 | case 0: | |
2987 | return err; | |
2988 | case -NFS4ERR_RESOURCE: | |
2989 | /* The IBM lawyers misread another document! */ | |
2990 | case -NFS4ERR_DELAY: | |
2991 | err = nfs4_delay(clp->cl_rpcclient, &timeout); | |
2992 | } | |
2993 | } while (err == 0); | |
2994 | return err; | |
2995 | } | |
2996 | ||
fe650407 TM |
2997 | struct nfs4_delegreturndata { |
2998 | struct nfs4_delegreturnargs args; | |
fa178f29 | 2999 | struct nfs4_delegreturnres res; |
fe650407 TM |
3000 | struct nfs_fh fh; |
3001 | nfs4_stateid stateid; | |
3002 | struct rpc_cred *cred; | |
26e976a8 | 3003 | unsigned long timestamp; |
fa178f29 | 3004 | struct nfs_fattr fattr; |
fe650407 TM |
3005 | int rpc_status; |
3006 | }; | |
3007 | ||
3008 | static void nfs4_delegreturn_prepare(struct rpc_task *task, void *calldata) | |
1da177e4 | 3009 | { |
fe650407 | 3010 | struct nfs4_delegreturndata *data = calldata; |
1da177e4 LT |
3011 | struct rpc_message msg = { |
3012 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_DELEGRETURN], | |
fe650407 | 3013 | .rpc_argp = &data->args, |
fa178f29 | 3014 | .rpc_resp = &data->res, |
fe650407 | 3015 | .rpc_cred = data->cred, |
1da177e4 | 3016 | }; |
fa178f29 | 3017 | nfs_fattr_init(data->res.fattr); |
fe650407 TM |
3018 | rpc_call_setup(task, &msg, 0); |
3019 | } | |
1da177e4 | 3020 | |
fe650407 TM |
3021 | static void nfs4_delegreturn_done(struct rpc_task *task, void *calldata) |
3022 | { | |
3023 | struct nfs4_delegreturndata *data = calldata; | |
3024 | data->rpc_status = task->tk_status; | |
26e976a8 | 3025 | if (data->rpc_status == 0) |
fa178f29 | 3026 | renew_lease(data->res.server, data->timestamp); |
fe650407 TM |
3027 | } |
3028 | ||
3029 | static void nfs4_delegreturn_release(void *calldata) | |
3030 | { | |
3031 | struct nfs4_delegreturndata *data = calldata; | |
3032 | ||
3033 | put_rpccred(data->cred); | |
3034 | kfree(calldata); | |
3035 | } | |
3036 | ||
c8d149f3 | 3037 | static const struct rpc_call_ops nfs4_delegreturn_ops = { |
fe650407 TM |
3038 | .rpc_call_prepare = nfs4_delegreturn_prepare, |
3039 | .rpc_call_done = nfs4_delegreturn_done, | |
3040 | .rpc_release = nfs4_delegreturn_release, | |
3041 | }; | |
3042 | ||
3043 | static int _nfs4_proc_delegreturn(struct inode *inode, struct rpc_cred *cred, const nfs4_stateid *stateid) | |
3044 | { | |
3045 | struct nfs4_delegreturndata *data; | |
fa178f29 | 3046 | struct nfs_server *server = NFS_SERVER(inode); |
fe650407 | 3047 | struct rpc_task *task; |
c970aa85 TM |
3048 | struct rpc_task_setup task_setup_data = { |
3049 | .rpc_client = server->client, | |
3050 | .callback_ops = &nfs4_delegreturn_ops, | |
3051 | .flags = RPC_TASK_ASYNC, | |
3052 | }; | |
fe650407 TM |
3053 | int status; |
3054 | ||
3055 | data = kmalloc(sizeof(*data), GFP_KERNEL); | |
3056 | if (data == NULL) | |
3057 | return -ENOMEM; | |
3058 | data->args.fhandle = &data->fh; | |
3059 | data->args.stateid = &data->stateid; | |
fa178f29 | 3060 | data->args.bitmask = server->attr_bitmask; |
fe650407 TM |
3061 | nfs_copy_fh(&data->fh, NFS_FH(inode)); |
3062 | memcpy(&data->stateid, stateid, sizeof(data->stateid)); | |
fa178f29 TM |
3063 | data->res.fattr = &data->fattr; |
3064 | data->res.server = server; | |
fe650407 | 3065 | data->cred = get_rpccred(cred); |
26e976a8 | 3066 | data->timestamp = jiffies; |
fe650407 TM |
3067 | data->rpc_status = 0; |
3068 | ||
c970aa85 TM |
3069 | task_setup_data.callback_data = data; |
3070 | task = rpc_run_task(&task_setup_data); | |
7a1218a2 | 3071 | if (IS_ERR(task)) |
fe650407 | 3072 | return PTR_ERR(task); |
fe650407 | 3073 | status = nfs4_wait_for_completion_rpc_task(task); |
fa178f29 | 3074 | if (status == 0) { |
fe650407 | 3075 | status = data->rpc_status; |
fa178f29 | 3076 | if (status == 0) |
9e08a3c5 | 3077 | nfs_refresh_inode(inode, &data->fattr); |
fa178f29 | 3078 | } |
e6b3c4db | 3079 | rpc_put_task(task); |
fe650407 | 3080 | return status; |
1da177e4 LT |
3081 | } |
3082 | ||
3083 | int nfs4_proc_delegreturn(struct inode *inode, struct rpc_cred *cred, const nfs4_stateid *stateid) | |
3084 | { | |
3085 | struct nfs_server *server = NFS_SERVER(inode); | |
3086 | struct nfs4_exception exception = { }; | |
3087 | int err; | |
3088 | do { | |
3089 | err = _nfs4_proc_delegreturn(inode, cred, stateid); | |
3090 | switch (err) { | |
3091 | case -NFS4ERR_STALE_STATEID: | |
3092 | case -NFS4ERR_EXPIRED: | |
1da177e4 LT |
3093 | case 0: |
3094 | return 0; | |
3095 | } | |
3096 | err = nfs4_handle_exception(server, err, &exception); | |
3097 | } while (exception.retry); | |
3098 | return err; | |
3099 | } | |
3100 | ||
3101 | #define NFS4_LOCK_MINTIMEOUT (1 * HZ) | |
3102 | #define NFS4_LOCK_MAXTIMEOUT (30 * HZ) | |
3103 | ||
3104 | /* | |
3105 | * sleep, with exponential backoff, and retry the LOCK operation. | |
3106 | */ | |
3107 | static unsigned long | |
3108 | nfs4_set_lock_task_retry(unsigned long timeout) | |
3109 | { | |
041e0e3b | 3110 | schedule_timeout_interruptible(timeout); |
1da177e4 LT |
3111 | timeout <<= 1; |
3112 | if (timeout > NFS4_LOCK_MAXTIMEOUT) | |
3113 | return NFS4_LOCK_MAXTIMEOUT; | |
3114 | return timeout; | |
3115 | } | |
3116 | ||
1da177e4 LT |
3117 | static int _nfs4_proc_getlk(struct nfs4_state *state, int cmd, struct file_lock *request) |
3118 | { | |
3119 | struct inode *inode = state->inode; | |
3120 | struct nfs_server *server = NFS_SERVER(inode); | |
7539bbab | 3121 | struct nfs_client *clp = server->nfs_client; |
911d1aaf | 3122 | struct nfs_lockt_args arg = { |
1da177e4 | 3123 | .fh = NFS_FH(inode), |
911d1aaf | 3124 | .fl = request, |
1da177e4 | 3125 | }; |
911d1aaf TM |
3126 | struct nfs_lockt_res res = { |
3127 | .denied = request, | |
1da177e4 LT |
3128 | }; |
3129 | struct rpc_message msg = { | |
3130 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOCKT], | |
3131 | .rpc_argp = &arg, | |
3132 | .rpc_resp = &res, | |
3133 | .rpc_cred = state->owner->so_cred, | |
3134 | }; | |
1da177e4 LT |
3135 | struct nfs4_lock_state *lsp; |
3136 | int status; | |
3137 | ||
3138 | down_read(&clp->cl_sem); | |
911d1aaf | 3139 | arg.lock_owner.clientid = clp->cl_clientid; |
8d0a8a9d TM |
3140 | status = nfs4_set_lock_state(state, request); |
3141 | if (status != 0) | |
3142 | goto out; | |
3143 | lsp = request->fl_u.nfs4_fl.owner; | |
9f958ab8 | 3144 | arg.lock_owner.id = lsp->ls_id.id; |
1da177e4 | 3145 | status = rpc_call_sync(server->client, &msg, 0); |
911d1aaf TM |
3146 | switch (status) { |
3147 | case 0: | |
3148 | request->fl_type = F_UNLCK; | |
3149 | break; | |
3150 | case -NFS4ERR_DENIED: | |
3151 | status = 0; | |
1da177e4 | 3152 | } |
70cc6487 | 3153 | request->fl_ops->fl_release_private(request); |
8d0a8a9d | 3154 | out: |
1da177e4 LT |
3155 | up_read(&clp->cl_sem); |
3156 | return status; | |
3157 | } | |
3158 | ||
3159 | static int nfs4_proc_getlk(struct nfs4_state *state, int cmd, struct file_lock *request) | |
3160 | { | |
3161 | struct nfs4_exception exception = { }; | |
3162 | int err; | |
3163 | ||
3164 | do { | |
3165 | err = nfs4_handle_exception(NFS_SERVER(state->inode), | |
3166 | _nfs4_proc_getlk(state, cmd, request), | |
3167 | &exception); | |
3168 | } while (exception.retry); | |
3169 | return err; | |
3170 | } | |
3171 | ||
3172 | static int do_vfs_lock(struct file *file, struct file_lock *fl) | |
3173 | { | |
3174 | int res = 0; | |
3175 | switch (fl->fl_flags & (FL_POSIX|FL_FLOCK)) { | |
3176 | case FL_POSIX: | |
3177 | res = posix_lock_file_wait(file, fl); | |
3178 | break; | |
3179 | case FL_FLOCK: | |
3180 | res = flock_lock_file_wait(file, fl); | |
3181 | break; | |
3182 | default: | |
3183 | BUG(); | |
3184 | } | |
1da177e4 LT |
3185 | return res; |
3186 | } | |
3187 | ||
faf5f49c | 3188 | struct nfs4_unlockdata { |
911d1aaf TM |
3189 | struct nfs_locku_args arg; |
3190 | struct nfs_locku_res res; | |
faf5f49c TM |
3191 | struct nfs4_lock_state *lsp; |
3192 | struct nfs_open_context *ctx; | |
911d1aaf TM |
3193 | struct file_lock fl; |
3194 | const struct nfs_server *server; | |
26e976a8 | 3195 | unsigned long timestamp; |
faf5f49c TM |
3196 | }; |
3197 | ||
911d1aaf TM |
3198 | static struct nfs4_unlockdata *nfs4_alloc_unlockdata(struct file_lock *fl, |
3199 | struct nfs_open_context *ctx, | |
3200 | struct nfs4_lock_state *lsp, | |
3201 | struct nfs_seqid *seqid) | |
3202 | { | |
3203 | struct nfs4_unlockdata *p; | |
3204 | struct inode *inode = lsp->ls_state->inode; | |
3205 | ||
3206 | p = kmalloc(sizeof(*p), GFP_KERNEL); | |
3207 | if (p == NULL) | |
3208 | return NULL; | |
3209 | p->arg.fh = NFS_FH(inode); | |
3210 | p->arg.fl = &p->fl; | |
3211 | p->arg.seqid = seqid; | |
3212 | p->arg.stateid = &lsp->ls_stateid; | |
3213 | p->lsp = lsp; | |
3214 | atomic_inc(&lsp->ls_count); | |
3215 | /* Ensure we don't close file until we're done freeing locks! */ | |
3216 | p->ctx = get_nfs_open_context(ctx); | |
3217 | memcpy(&p->fl, fl, sizeof(p->fl)); | |
3218 | p->server = NFS_SERVER(inode); | |
3219 | return p; | |
3220 | } | |
3221 | ||
06f814a3 | 3222 | static void nfs4_locku_release_calldata(void *data) |
faf5f49c | 3223 | { |
963d8fe5 | 3224 | struct nfs4_unlockdata *calldata = data; |
911d1aaf | 3225 | nfs_free_seqid(calldata->arg.seqid); |
06f814a3 TM |
3226 | nfs4_put_lock_state(calldata->lsp); |
3227 | put_nfs_open_context(calldata->ctx); | |
3228 | kfree(calldata); | |
faf5f49c TM |
3229 | } |
3230 | ||
963d8fe5 | 3231 | static void nfs4_locku_done(struct rpc_task *task, void *data) |
faf5f49c | 3232 | { |
963d8fe5 | 3233 | struct nfs4_unlockdata *calldata = data; |
faf5f49c | 3234 | |
06f814a3 TM |
3235 | if (RPC_ASSASSINATED(task)) |
3236 | return; | |
911d1aaf | 3237 | nfs_increment_lock_seqid(task->tk_status, calldata->arg.seqid); |
faf5f49c TM |
3238 | switch (task->tk_status) { |
3239 | case 0: | |
3240 | memcpy(calldata->lsp->ls_stateid.data, | |
911d1aaf | 3241 | calldata->res.stateid.data, |
faf5f49c | 3242 | sizeof(calldata->lsp->ls_stateid.data)); |
26e976a8 | 3243 | renew_lease(calldata->server, calldata->timestamp); |
faf5f49c TM |
3244 | break; |
3245 | case -NFS4ERR_STALE_STATEID: | |
3246 | case -NFS4ERR_EXPIRED: | |
faf5f49c TM |
3247 | break; |
3248 | default: | |
a6a352e9 | 3249 | if (nfs4_async_handle_error(task, calldata->server) == -EAGAIN) |
faf5f49c | 3250 | rpc_restart_call(task); |
faf5f49c | 3251 | } |
faf5f49c TM |
3252 | } |
3253 | ||
4ce70ada | 3254 | static void nfs4_locku_prepare(struct rpc_task *task, void *data) |
faf5f49c | 3255 | { |
4ce70ada | 3256 | struct nfs4_unlockdata *calldata = data; |
1da177e4 LT |
3257 | struct rpc_message msg = { |
3258 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOCKU], | |
faf5f49c TM |
3259 | .rpc_argp = &calldata->arg, |
3260 | .rpc_resp = &calldata->res, | |
3261 | .rpc_cred = calldata->lsp->ls_state->owner->so_cred, | |
1da177e4 | 3262 | }; |
faf5f49c | 3263 | |
911d1aaf | 3264 | if (nfs_wait_on_sequence(calldata->arg.seqid, task) != 0) |
faf5f49c TM |
3265 | return; |
3266 | if ((calldata->lsp->ls_flags & NFS_LOCK_INITIALIZED) == 0) { | |
963d8fe5 TM |
3267 | /* Note: exit _without_ running nfs4_locku_done */ |
3268 | task->tk_action = NULL; | |
faf5f49c TM |
3269 | return; |
3270 | } | |
26e976a8 | 3271 | calldata->timestamp = jiffies; |
faf5f49c TM |
3272 | rpc_call_setup(task, &msg, 0); |
3273 | } | |
3274 | ||
963d8fe5 | 3275 | static const struct rpc_call_ops nfs4_locku_ops = { |
4ce70ada | 3276 | .rpc_call_prepare = nfs4_locku_prepare, |
963d8fe5 | 3277 | .rpc_call_done = nfs4_locku_done, |
06f814a3 | 3278 | .rpc_release = nfs4_locku_release_calldata, |
963d8fe5 TM |
3279 | }; |
3280 | ||
a5d16a4d TM |
3281 | static struct rpc_task *nfs4_do_unlck(struct file_lock *fl, |
3282 | struct nfs_open_context *ctx, | |
3283 | struct nfs4_lock_state *lsp, | |
3284 | struct nfs_seqid *seqid) | |
3285 | { | |
3286 | struct nfs4_unlockdata *data; | |
c970aa85 TM |
3287 | struct rpc_task_setup task_setup_data = { |
3288 | .rpc_client = NFS_CLIENT(lsp->ls_state->inode), | |
3289 | .callback_ops = &nfs4_locku_ops, | |
3290 | .flags = RPC_TASK_ASYNC, | |
3291 | }; | |
a5d16a4d | 3292 | |
137d6aca FF |
3293 | /* Ensure this is an unlock - when canceling a lock, the |
3294 | * canceled lock is passed in, and it won't be an unlock. | |
3295 | */ | |
3296 | fl->fl_type = F_UNLCK; | |
3297 | ||
a5d16a4d TM |
3298 | data = nfs4_alloc_unlockdata(fl, ctx, lsp, seqid); |
3299 | if (data == NULL) { | |
3300 | nfs_free_seqid(seqid); | |
3301 | return ERR_PTR(-ENOMEM); | |
3302 | } | |
3303 | ||
c970aa85 TM |
3304 | task_setup_data.callback_data = data; |
3305 | return rpc_run_task(&task_setup_data); | |
a5d16a4d TM |
3306 | } |
3307 | ||
faf5f49c TM |
3308 | static int nfs4_proc_unlck(struct nfs4_state *state, int cmd, struct file_lock *request) |
3309 | { | |
911d1aaf | 3310 | struct nfs_seqid *seqid; |
1da177e4 | 3311 | struct nfs4_lock_state *lsp; |
06f814a3 TM |
3312 | struct rpc_task *task; |
3313 | int status = 0; | |
faf5f49c | 3314 | |
8d0a8a9d | 3315 | status = nfs4_set_lock_state(state, request); |
9b073574 TM |
3316 | /* Unlock _before_ we do the RPC call */ |
3317 | request->fl_flags |= FL_EXISTS; | |
3318 | if (do_vfs_lock(request->fl_file, request) == -ENOENT) | |
3319 | goto out; | |
8d0a8a9d | 3320 | if (status != 0) |
9b073574 TM |
3321 | goto out; |
3322 | /* Is this a delegated lock? */ | |
3323 | if (test_bit(NFS_DELEGATED_STATE, &state->flags)) | |
3324 | goto out; | |
8d0a8a9d | 3325 | lsp = request->fl_u.nfs4_fl.owner; |
911d1aaf | 3326 | seqid = nfs_alloc_seqid(&lsp->ls_seqid); |
9b073574 | 3327 | status = -ENOMEM; |
911d1aaf | 3328 | if (seqid == NULL) |
9b073574 | 3329 | goto out; |
cd3758e3 | 3330 | task = nfs4_do_unlck(request, nfs_file_open_context(request->fl_file), lsp, seqid); |
a5d16a4d TM |
3331 | status = PTR_ERR(task); |
3332 | if (IS_ERR(task)) | |
9b073574 | 3333 | goto out; |
a5d16a4d | 3334 | status = nfs4_wait_for_completion_rpc_task(task); |
e6b3c4db | 3335 | rpc_put_task(task); |
9b073574 | 3336 | out: |
1da177e4 LT |
3337 | return status; |
3338 | } | |
3339 | ||
a5d16a4d TM |
3340 | struct nfs4_lockdata { |
3341 | struct nfs_lock_args arg; | |
3342 | struct nfs_lock_res res; | |
3343 | struct nfs4_lock_state *lsp; | |
3344 | struct nfs_open_context *ctx; | |
3345 | struct file_lock fl; | |
26e976a8 | 3346 | unsigned long timestamp; |
a5d16a4d TM |
3347 | int rpc_status; |
3348 | int cancelled; | |
3349 | }; | |
3350 | ||
3351 | static struct nfs4_lockdata *nfs4_alloc_lockdata(struct file_lock *fl, | |
3352 | struct nfs_open_context *ctx, struct nfs4_lock_state *lsp) | |
1da177e4 | 3353 | { |
a5d16a4d TM |
3354 | struct nfs4_lockdata *p; |
3355 | struct inode *inode = lsp->ls_state->inode; | |
1da177e4 | 3356 | struct nfs_server *server = NFS_SERVER(inode); |
a5d16a4d TM |
3357 | |
3358 | p = kzalloc(sizeof(*p), GFP_KERNEL); | |
3359 | if (p == NULL) | |
3360 | return NULL; | |
3361 | ||
3362 | p->arg.fh = NFS_FH(inode); | |
3363 | p->arg.fl = &p->fl; | |
2f74c0a0 TM |
3364 | p->arg.open_seqid = nfs_alloc_seqid(&lsp->ls_state->owner->so_seqid); |
3365 | if (p->arg.open_seqid == NULL) | |
3366 | goto out_free; | |
a5d16a4d TM |
3367 | p->arg.lock_seqid = nfs_alloc_seqid(&lsp->ls_seqid); |
3368 | if (p->arg.lock_seqid == NULL) | |
2f74c0a0 | 3369 | goto out_free_seqid; |
a5d16a4d | 3370 | p->arg.lock_stateid = &lsp->ls_stateid; |
7539bbab | 3371 | p->arg.lock_owner.clientid = server->nfs_client->cl_clientid; |
9f958ab8 | 3372 | p->arg.lock_owner.id = lsp->ls_id.id; |
a5d16a4d TM |
3373 | p->lsp = lsp; |
3374 | atomic_inc(&lsp->ls_count); | |
3375 | p->ctx = get_nfs_open_context(ctx); | |
3376 | memcpy(&p->fl, fl, sizeof(p->fl)); | |
3377 | return p; | |
2f74c0a0 TM |
3378 | out_free_seqid: |
3379 | nfs_free_seqid(p->arg.open_seqid); | |
a5d16a4d TM |
3380 | out_free: |
3381 | kfree(p); | |
3382 | return NULL; | |
3383 | } | |
3384 | ||
3385 | static void nfs4_lock_prepare(struct rpc_task *task, void *calldata) | |
3386 | { | |
3387 | struct nfs4_lockdata *data = calldata; | |
3388 | struct nfs4_state *state = data->lsp->ls_state; | |
3389 | struct nfs4_state_owner *sp = state->owner; | |
1da177e4 | 3390 | struct rpc_message msg = { |
a5d16a4d TM |
3391 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOCK], |
3392 | .rpc_argp = &data->arg, | |
3393 | .rpc_resp = &data->res, | |
3394 | .rpc_cred = sp->so_cred, | |
1da177e4 | 3395 | }; |
06735b34 | 3396 | |
a5d16a4d | 3397 | dprintk("%s: begin!\n", __FUNCTION__); |
2f74c0a0 TM |
3398 | if (nfs_wait_on_sequence(data->arg.lock_seqid, task) != 0) |
3399 | return; | |
a5d16a4d TM |
3400 | /* Do we need to do an open_to_lock_owner? */ |
3401 | if (!(data->arg.lock_seqid->sequence->flags & NFS_SEQID_CONFIRMED)) { | |
e6e21970 TM |
3402 | if (nfs_wait_on_sequence(data->arg.open_seqid, task) != 0) |
3403 | return; | |
a5d16a4d TM |
3404 | data->arg.open_stateid = &state->stateid; |
3405 | data->arg.new_lock_owner = 1; | |
2f74c0a0 TM |
3406 | } else |
3407 | data->arg.new_lock_owner = 0; | |
26e976a8 | 3408 | data->timestamp = jiffies; |
a5d16a4d | 3409 | rpc_call_setup(task, &msg, 0); |
a5d16a4d TM |
3410 | dprintk("%s: done!, ret = %d\n", __FUNCTION__, data->rpc_status); |
3411 | } | |
3412 | ||
3413 | static void nfs4_lock_done(struct rpc_task *task, void *calldata) | |
3414 | { | |
3415 | struct nfs4_lockdata *data = calldata; | |
3416 | ||
3417 | dprintk("%s: begin!\n", __FUNCTION__); | |
3418 | ||
3419 | data->rpc_status = task->tk_status; | |
3420 | if (RPC_ASSASSINATED(task)) | |
3421 | goto out; | |
3422 | if (data->arg.new_lock_owner != 0) { | |
3423 | nfs_increment_open_seqid(data->rpc_status, data->arg.open_seqid); | |
3424 | if (data->rpc_status == 0) | |
3425 | nfs_confirm_seqid(&data->lsp->ls_seqid, 0); | |
3426 | else | |
3427 | goto out; | |
3428 | } | |
3429 | if (data->rpc_status == 0) { | |
3430 | memcpy(data->lsp->ls_stateid.data, data->res.stateid.data, | |
3431 | sizeof(data->lsp->ls_stateid.data)); | |
3432 | data->lsp->ls_flags |= NFS_LOCK_INITIALIZED; | |
88be9f99 | 3433 | renew_lease(NFS_SERVER(data->ctx->path.dentry->d_inode), data->timestamp); |
a5d16a4d TM |
3434 | } |
3435 | nfs_increment_lock_seqid(data->rpc_status, data->arg.lock_seqid); | |
3436 | out: | |
3437 | dprintk("%s: done, ret = %d!\n", __FUNCTION__, data->rpc_status); | |
3438 | } | |
3439 | ||
3440 | static void nfs4_lock_release(void *calldata) | |
3441 | { | |
3442 | struct nfs4_lockdata *data = calldata; | |
3443 | ||
3444 | dprintk("%s: begin!\n", __FUNCTION__); | |
2f74c0a0 | 3445 | nfs_free_seqid(data->arg.open_seqid); |
a5d16a4d TM |
3446 | if (data->cancelled != 0) { |
3447 | struct rpc_task *task; | |
3448 | task = nfs4_do_unlck(&data->fl, data->ctx, data->lsp, | |
3449 | data->arg.lock_seqid); | |
3450 | if (!IS_ERR(task)) | |
e6b3c4db | 3451 | rpc_put_task(task); |
a5d16a4d TM |
3452 | dprintk("%s: cancelling lock!\n", __FUNCTION__); |
3453 | } else | |
3454 | nfs_free_seqid(data->arg.lock_seqid); | |
3455 | nfs4_put_lock_state(data->lsp); | |
3456 | put_nfs_open_context(data->ctx); | |
3457 | kfree(data); | |
3458 | dprintk("%s: done!\n", __FUNCTION__); | |
3459 | } | |
3460 | ||
3461 | static const struct rpc_call_ops nfs4_lock_ops = { | |
3462 | .rpc_call_prepare = nfs4_lock_prepare, | |
3463 | .rpc_call_done = nfs4_lock_done, | |
3464 | .rpc_release = nfs4_lock_release, | |
3465 | }; | |
3466 | ||
3467 | static int _nfs4_do_setlk(struct nfs4_state *state, int cmd, struct file_lock *fl, int reclaim) | |
3468 | { | |
3469 | struct nfs4_lockdata *data; | |
3470 | struct rpc_task *task; | |
c970aa85 TM |
3471 | struct rpc_task_setup task_setup_data = { |
3472 | .rpc_client = NFS_CLIENT(state->inode), | |
3473 | .callback_ops = &nfs4_lock_ops, | |
3474 | .flags = RPC_TASK_ASYNC, | |
3475 | }; | |
a5d16a4d TM |
3476 | int ret; |
3477 | ||
3478 | dprintk("%s: begin!\n", __FUNCTION__); | |
cd3758e3 | 3479 | data = nfs4_alloc_lockdata(fl, nfs_file_open_context(fl->fl_file), |
a5d16a4d TM |
3480 | fl->fl_u.nfs4_fl.owner); |
3481 | if (data == NULL) | |
3482 | return -ENOMEM; | |
3483 | if (IS_SETLKW(cmd)) | |
3484 | data->arg.block = 1; | |
3485 | if (reclaim != 0) | |
3486 | data->arg.reclaim = 1; | |
c970aa85 TM |
3487 | task_setup_data.callback_data = data; |
3488 | task = rpc_run_task(&task_setup_data); | |
7a1218a2 | 3489 | if (IS_ERR(task)) |
a5d16a4d | 3490 | return PTR_ERR(task); |
a5d16a4d TM |
3491 | ret = nfs4_wait_for_completion_rpc_task(task); |
3492 | if (ret == 0) { | |
3493 | ret = data->rpc_status; | |
3494 | if (ret == -NFS4ERR_DENIED) | |
3495 | ret = -EAGAIN; | |
3496 | } else | |
3497 | data->cancelled = 1; | |
e6b3c4db | 3498 | rpc_put_task(task); |
a5d16a4d TM |
3499 | dprintk("%s: done, ret = %d!\n", __FUNCTION__, ret); |
3500 | return ret; | |
1da177e4 LT |
3501 | } |
3502 | ||
3503 | static int nfs4_lock_reclaim(struct nfs4_state *state, struct file_lock *request) | |
3504 | { | |
202b50dc TM |
3505 | struct nfs_server *server = NFS_SERVER(state->inode); |
3506 | struct nfs4_exception exception = { }; | |
3507 | int err; | |
3508 | ||
3509 | do { | |
42a2d13e TM |
3510 | /* Cache the lock if possible... */ |
3511 | if (test_bit(NFS_DELEGATED_STATE, &state->flags) != 0) | |
3512 | return 0; | |
202b50dc TM |
3513 | err = _nfs4_do_setlk(state, F_SETLK, request, 1); |
3514 | if (err != -NFS4ERR_DELAY) | |
3515 | break; | |
3516 | nfs4_handle_exception(server, err, &exception); | |
3517 | } while (exception.retry); | |
3518 | return err; | |
1da177e4 LT |
3519 | } |
3520 | ||
3521 | static int nfs4_lock_expired(struct nfs4_state *state, struct file_lock *request) | |
3522 | { | |
202b50dc TM |
3523 | struct nfs_server *server = NFS_SERVER(state->inode); |
3524 | struct nfs4_exception exception = { }; | |
3525 | int err; | |
3526 | ||
6bfc93ef TM |
3527 | err = nfs4_set_lock_state(state, request); |
3528 | if (err != 0) | |
3529 | return err; | |
202b50dc | 3530 | do { |
42a2d13e TM |
3531 | if (test_bit(NFS_DELEGATED_STATE, &state->flags) != 0) |
3532 | return 0; | |
202b50dc TM |
3533 | err = _nfs4_do_setlk(state, F_SETLK, request, 0); |
3534 | if (err != -NFS4ERR_DELAY) | |
3535 | break; | |
3536 | nfs4_handle_exception(server, err, &exception); | |
3537 | } while (exception.retry); | |
3538 | return err; | |
1da177e4 LT |
3539 | } |
3540 | ||
3541 | static int _nfs4_proc_setlk(struct nfs4_state *state, int cmd, struct file_lock *request) | |
3542 | { | |
adfa6f98 | 3543 | struct nfs_client *clp = state->owner->so_client; |
01c3b861 | 3544 | unsigned char fl_flags = request->fl_flags; |
1da177e4 LT |
3545 | int status; |
3546 | ||
6bfc93ef | 3547 | /* Is this a delegated open? */ |
6bfc93ef TM |
3548 | status = nfs4_set_lock_state(state, request); |
3549 | if (status != 0) | |
3550 | goto out; | |
01c3b861 TM |
3551 | request->fl_flags |= FL_ACCESS; |
3552 | status = do_vfs_lock(request->fl_file, request); | |
3553 | if (status < 0) | |
3554 | goto out; | |
3555 | down_read(&clp->cl_sem); | |
3556 | if (test_bit(NFS_DELEGATED_STATE, &state->flags)) { | |
3557 | struct nfs_inode *nfsi = NFS_I(state->inode); | |
3558 | /* Yes: cache locks! */ | |
3559 | down_read(&nfsi->rwsem); | |
3560 | /* ...but avoid races with delegation recall... */ | |
3561 | if (test_bit(NFS_DELEGATED_STATE, &state->flags)) { | |
3562 | request->fl_flags = fl_flags & ~FL_SLEEP; | |
3563 | status = do_vfs_lock(request->fl_file, request); | |
3564 | up_read(&nfsi->rwsem); | |
3565 | goto out_unlock; | |
3566 | } | |
3567 | up_read(&nfsi->rwsem); | |
3568 | } | |
6bfc93ef TM |
3569 | status = _nfs4_do_setlk(state, cmd, request, 0); |
3570 | if (status != 0) | |
01c3b861 | 3571 | goto out_unlock; |
6bfc93ef | 3572 | /* Note: we always want to sleep here! */ |
01c3b861 | 3573 | request->fl_flags = fl_flags | FL_SLEEP; |
6bfc93ef TM |
3574 | if (do_vfs_lock(request->fl_file, request) < 0) |
3575 | printk(KERN_WARNING "%s: VFS is out of sync with lock manager!\n", __FUNCTION__); | |
01c3b861 | 3576 | out_unlock: |
1da177e4 | 3577 | up_read(&clp->cl_sem); |
01c3b861 TM |
3578 | out: |
3579 | request->fl_flags = fl_flags; | |
1da177e4 LT |
3580 | return status; |
3581 | } | |
3582 | ||
3583 | static int nfs4_proc_setlk(struct nfs4_state *state, int cmd, struct file_lock *request) | |
3584 | { | |
3585 | struct nfs4_exception exception = { }; | |
3586 | int err; | |
3587 | ||
3588 | do { | |
3589 | err = nfs4_handle_exception(NFS_SERVER(state->inode), | |
3590 | _nfs4_proc_setlk(state, cmd, request), | |
3591 | &exception); | |
3592 | } while (exception.retry); | |
3593 | return err; | |
3594 | } | |
3595 | ||
3596 | static int | |
3597 | nfs4_proc_lock(struct file *filp, int cmd, struct file_lock *request) | |
3598 | { | |
3599 | struct nfs_open_context *ctx; | |
3600 | struct nfs4_state *state; | |
3601 | unsigned long timeout = NFS4_LOCK_MINTIMEOUT; | |
3602 | int status; | |
3603 | ||
3604 | /* verify open state */ | |
cd3758e3 | 3605 | ctx = nfs_file_open_context(filp); |
1da177e4 LT |
3606 | state = ctx->state; |
3607 | ||
3608 | if (request->fl_start < 0 || request->fl_end < 0) | |
3609 | return -EINVAL; | |
3610 | ||
3611 | if (IS_GETLK(cmd)) | |
3612 | return nfs4_proc_getlk(state, F_GETLK, request); | |
3613 | ||
3614 | if (!(IS_SETLK(cmd) || IS_SETLKW(cmd))) | |
3615 | return -EINVAL; | |
3616 | ||
3617 | if (request->fl_type == F_UNLCK) | |
3618 | return nfs4_proc_unlck(state, cmd, request); | |
3619 | ||
3620 | do { | |
3621 | status = nfs4_proc_setlk(state, cmd, request); | |
3622 | if ((status != -EAGAIN) || IS_SETLK(cmd)) | |
3623 | break; | |
3624 | timeout = nfs4_set_lock_task_retry(timeout); | |
3625 | status = -ERESTARTSYS; | |
3626 | if (signalled()) | |
3627 | break; | |
3628 | } while(status < 0); | |
1da177e4 LT |
3629 | return status; |
3630 | } | |
3631 | ||
888e694c TM |
3632 | int nfs4_lock_delegation_recall(struct nfs4_state *state, struct file_lock *fl) |
3633 | { | |
3634 | struct nfs_server *server = NFS_SERVER(state->inode); | |
3635 | struct nfs4_exception exception = { }; | |
3636 | int err; | |
3637 | ||
3638 | err = nfs4_set_lock_state(state, fl); | |
3639 | if (err != 0) | |
3640 | goto out; | |
3641 | do { | |
3642 | err = _nfs4_do_setlk(state, F_SETLK, fl, 0); | |
3643 | if (err != -NFS4ERR_DELAY) | |
3644 | break; | |
3645 | err = nfs4_handle_exception(server, err, &exception); | |
3646 | } while (exception.retry); | |
3647 | out: | |
3648 | return err; | |
3649 | } | |
6b3b5496 | 3650 | |
aa1870af BF |
3651 | #define XATTR_NAME_NFSV4_ACL "system.nfs4_acl" |
3652 | ||
6b3b5496 BF |
3653 | int nfs4_setxattr(struct dentry *dentry, const char *key, const void *buf, |
3654 | size_t buflen, int flags) | |
3655 | { | |
4b580ee3 BF |
3656 | struct inode *inode = dentry->d_inode; |
3657 | ||
3658 | if (strcmp(key, XATTR_NAME_NFSV4_ACL) != 0) | |
3659 | return -EOPNOTSUPP; | |
3660 | ||
3661 | if (!S_ISREG(inode->i_mode) && | |
3662 | (!S_ISDIR(inode->i_mode) || inode->i_mode & S_ISVTX)) | |
3663 | return -EPERM; | |
3664 | ||
3665 | return nfs4_proc_set_acl(inode, buf, buflen); | |
6b3b5496 BF |
3666 | } |
3667 | ||
3668 | /* The getxattr man page suggests returning -ENODATA for unknown attributes, | |
3669 | * and that's what we'll do for e.g. user attributes that haven't been set. | |
3670 | * But we'll follow ext2/ext3's lead by returning -EOPNOTSUPP for unsupported | |
3671 | * attributes in kernel-managed attribute namespaces. */ | |
3672 | ssize_t nfs4_getxattr(struct dentry *dentry, const char *key, void *buf, | |
3673 | size_t buflen) | |
3674 | { | |
aa1870af BF |
3675 | struct inode *inode = dentry->d_inode; |
3676 | ||
3677 | if (strcmp(key, XATTR_NAME_NFSV4_ACL) != 0) | |
3678 | return -EOPNOTSUPP; | |
3679 | ||
3680 | return nfs4_proc_get_acl(inode, buf, buflen); | |
6b3b5496 BF |
3681 | } |
3682 | ||
3683 | ssize_t nfs4_listxattr(struct dentry *dentry, char *buf, size_t buflen) | |
3684 | { | |
aa1870af | 3685 | size_t len = strlen(XATTR_NAME_NFSV4_ACL) + 1; |
6b3b5496 | 3686 | |
096455a2 BF |
3687 | if (!nfs4_server_supports_acls(NFS_SERVER(dentry->d_inode))) |
3688 | return 0; | |
6b3b5496 BF |
3689 | if (buf && buflen < len) |
3690 | return -ERANGE; | |
3691 | if (buf) | |
aa1870af BF |
3692 | memcpy(buf, XATTR_NAME_NFSV4_ACL, len); |
3693 | return len; | |
6b3b5496 BF |
3694 | } |
3695 | ||
56659e99 | 3696 | int nfs4_proc_fs_locations(struct inode *dir, const struct qstr *name, |
7aaa0b3b | 3697 | struct nfs4_fs_locations *fs_locations, struct page *page) |
683b57b4 TM |
3698 | { |
3699 | struct nfs_server *server = NFS_SERVER(dir); | |
3700 | u32 bitmask[2] = { | |
361e624f MN |
3701 | [0] = FATTR4_WORD0_FSID | FATTR4_WORD0_FS_LOCATIONS, |
3702 | [1] = FATTR4_WORD1_MOUNTED_ON_FILEID, | |
683b57b4 TM |
3703 | }; |
3704 | struct nfs4_fs_locations_arg args = { | |
3705 | .dir_fh = NFS_FH(dir), | |
c228fd3a | 3706 | .name = name, |
683b57b4 TM |
3707 | .page = page, |
3708 | .bitmask = bitmask, | |
3709 | }; | |
3710 | struct rpc_message msg = { | |
3711 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_FS_LOCATIONS], | |
3712 | .rpc_argp = &args, | |
7aaa0b3b | 3713 | .rpc_resp = fs_locations, |
683b57b4 TM |
3714 | }; |
3715 | int status; | |
3716 | ||
3717 | dprintk("%s: start\n", __FUNCTION__); | |
c228fd3a | 3718 | nfs_fattr_init(&fs_locations->fattr); |
683b57b4 | 3719 | fs_locations->server = server; |
830b8e33 | 3720 | fs_locations->nlocations = 0; |
683b57b4 TM |
3721 | status = rpc_call_sync(server->client, &msg, 0); |
3722 | dprintk("%s: returned status = %d\n", __FUNCTION__, status); | |
3723 | return status; | |
3724 | } | |
3725 | ||
1da177e4 LT |
3726 | struct nfs4_state_recovery_ops nfs4_reboot_recovery_ops = { |
3727 | .recover_open = nfs4_open_reclaim, | |
3728 | .recover_lock = nfs4_lock_reclaim, | |
3729 | }; | |
3730 | ||
3731 | struct nfs4_state_recovery_ops nfs4_network_partition_recovery_ops = { | |
3732 | .recover_open = nfs4_open_expired, | |
3733 | .recover_lock = nfs4_lock_expired, | |
3734 | }; | |
3735 | ||
92e1d5be | 3736 | static const struct inode_operations nfs4_file_inode_operations = { |
6b3b5496 BF |
3737 | .permission = nfs_permission, |
3738 | .getattr = nfs_getattr, | |
3739 | .setattr = nfs_setattr, | |
3740 | .getxattr = nfs4_getxattr, | |
3741 | .setxattr = nfs4_setxattr, | |
3742 | .listxattr = nfs4_listxattr, | |
3743 | }; | |
3744 | ||
509de811 | 3745 | const struct nfs_rpc_ops nfs_v4_clientops = { |
1da177e4 LT |
3746 | .version = 4, /* protocol version */ |
3747 | .dentry_ops = &nfs4_dentry_operations, | |
3748 | .dir_inode_ops = &nfs4_dir_inode_operations, | |
6b3b5496 | 3749 | .file_inode_ops = &nfs4_file_inode_operations, |
1da177e4 LT |
3750 | .getroot = nfs4_proc_get_root, |
3751 | .getattr = nfs4_proc_getattr, | |
3752 | .setattr = nfs4_proc_setattr, | |
2b3de441 | 3753 | .lookupfh = nfs4_proc_lookupfh, |
1da177e4 LT |
3754 | .lookup = nfs4_proc_lookup, |
3755 | .access = nfs4_proc_access, | |
3756 | .readlink = nfs4_proc_readlink, | |
1da177e4 LT |
3757 | .create = nfs4_proc_create, |
3758 | .remove = nfs4_proc_remove, | |
3759 | .unlink_setup = nfs4_proc_unlink_setup, | |
3760 | .unlink_done = nfs4_proc_unlink_done, | |
3761 | .rename = nfs4_proc_rename, | |
3762 | .link = nfs4_proc_link, | |
3763 | .symlink = nfs4_proc_symlink, | |
3764 | .mkdir = nfs4_proc_mkdir, | |
3765 | .rmdir = nfs4_proc_remove, | |
3766 | .readdir = nfs4_proc_readdir, | |
3767 | .mknod = nfs4_proc_mknod, | |
3768 | .statfs = nfs4_proc_statfs, | |
3769 | .fsinfo = nfs4_proc_fsinfo, | |
3770 | .pathconf = nfs4_proc_pathconf, | |
e9326dca | 3771 | .set_capabilities = nfs4_server_capabilities, |
1da177e4 LT |
3772 | .decode_dirent = nfs4_decode_dirent, |
3773 | .read_setup = nfs4_proc_read_setup, | |
ec06c096 | 3774 | .read_done = nfs4_read_done, |
1da177e4 | 3775 | .write_setup = nfs4_proc_write_setup, |
788e7a89 | 3776 | .write_done = nfs4_write_done, |
1da177e4 | 3777 | .commit_setup = nfs4_proc_commit_setup, |
788e7a89 | 3778 | .commit_done = nfs4_commit_done, |
02a913a7 TM |
3779 | .file_open = nfs_open, |
3780 | .file_release = nfs_release, | |
1da177e4 | 3781 | .lock = nfs4_proc_lock, |
e50a1c2e | 3782 | .clear_acl_cache = nfs4_zap_acl_attr, |
1da177e4 LT |
3783 | }; |
3784 | ||
3785 | /* | |
3786 | * Local variables: | |
3787 | * c-basic-offset: 8 | |
3788 | * End: | |
3789 | */ |