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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 *); |
1da177e4 | 65 | static int _nfs4_proc_access(struct inode *inode, struct nfs_access_entry *entry); |
faf5f49c | 66 | static int nfs4_handle_exception(const struct nfs_server *server, int errorcode, struct nfs4_exception *exception); |
adfa6f98 | 67 | static int nfs4_wait_clnt_recover(struct rpc_clnt *clnt, struct nfs_client *clp); |
aac00a8d | 68 | static int _nfs4_do_access(struct inode *inode, struct rpc_cred *cred, int openflags); |
9936781d TM |
69 | static int _nfs4_proc_lookup(struct inode *dir, const struct qstr *name, struct nfs_fh *fhandle, struct nfs_fattr *fattr); |
70 | static int _nfs4_proc_getattr(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fattr *fattr); | |
1da177e4 | 71 | |
1da177e4 LT |
72 | /* Prevent leaks of NFSv4 errors into userland */ |
73 | int nfs4_map_errors(int err) | |
74 | { | |
75 | if (err < -1000) { | |
76 | dprintk("%s could not handle NFSv4 error %d\n", | |
77 | __FUNCTION__, -err); | |
78 | return -EIO; | |
79 | } | |
80 | return err; | |
81 | } | |
82 | ||
83 | /* | |
84 | * This is our standard bitmap for GETATTR requests. | |
85 | */ | |
86 | const u32 nfs4_fattr_bitmap[2] = { | |
87 | FATTR4_WORD0_TYPE | |
88 | | FATTR4_WORD0_CHANGE | |
89 | | FATTR4_WORD0_SIZE | |
90 | | FATTR4_WORD0_FSID | |
91 | | FATTR4_WORD0_FILEID, | |
92 | FATTR4_WORD1_MODE | |
93 | | FATTR4_WORD1_NUMLINKS | |
94 | | FATTR4_WORD1_OWNER | |
95 | | FATTR4_WORD1_OWNER_GROUP | |
96 | | FATTR4_WORD1_RAWDEV | |
97 | | FATTR4_WORD1_SPACE_USED | |
98 | | FATTR4_WORD1_TIME_ACCESS | |
99 | | FATTR4_WORD1_TIME_METADATA | |
100 | | FATTR4_WORD1_TIME_MODIFY | |
101 | }; | |
102 | ||
103 | const u32 nfs4_statfs_bitmap[2] = { | |
104 | FATTR4_WORD0_FILES_AVAIL | |
105 | | FATTR4_WORD0_FILES_FREE | |
106 | | FATTR4_WORD0_FILES_TOTAL, | |
107 | FATTR4_WORD1_SPACE_AVAIL | |
108 | | FATTR4_WORD1_SPACE_FREE | |
109 | | FATTR4_WORD1_SPACE_TOTAL | |
110 | }; | |
111 | ||
4ce79717 | 112 | const u32 nfs4_pathconf_bitmap[2] = { |
1da177e4 LT |
113 | FATTR4_WORD0_MAXLINK |
114 | | FATTR4_WORD0_MAXNAME, | |
115 | 0 | |
116 | }; | |
117 | ||
118 | const u32 nfs4_fsinfo_bitmap[2] = { FATTR4_WORD0_MAXFILESIZE | |
119 | | FATTR4_WORD0_MAXREAD | |
120 | | FATTR4_WORD0_MAXWRITE | |
121 | | FATTR4_WORD0_LEASE_TIME, | |
122 | 0 | |
123 | }; | |
124 | ||
830b8e33 MN |
125 | const u32 nfs4_fs_locations_bitmap[2] = { |
126 | FATTR4_WORD0_TYPE | |
127 | | FATTR4_WORD0_CHANGE | |
128 | | FATTR4_WORD0_SIZE | |
129 | | FATTR4_WORD0_FSID | |
130 | | FATTR4_WORD0_FILEID | |
131 | | FATTR4_WORD0_FS_LOCATIONS, | |
132 | FATTR4_WORD1_MODE | |
133 | | FATTR4_WORD1_NUMLINKS | |
134 | | FATTR4_WORD1_OWNER | |
135 | | FATTR4_WORD1_OWNER_GROUP | |
136 | | FATTR4_WORD1_RAWDEV | |
137 | | FATTR4_WORD1_SPACE_USED | |
138 | | FATTR4_WORD1_TIME_ACCESS | |
139 | | FATTR4_WORD1_TIME_METADATA | |
140 | | FATTR4_WORD1_TIME_MODIFY | |
141 | | FATTR4_WORD1_MOUNTED_ON_FILEID | |
142 | }; | |
143 | ||
bc4785cd | 144 | static void nfs4_setup_readdir(u64 cookie, __be32 *verifier, struct dentry *dentry, |
1da177e4 LT |
145 | struct nfs4_readdir_arg *readdir) |
146 | { | |
0dbb4c67 | 147 | __be32 *start, *p; |
1da177e4 LT |
148 | |
149 | BUG_ON(readdir->count < 80); | |
150 | if (cookie > 2) { | |
b7ef1956 | 151 | readdir->cookie = cookie; |
1da177e4 LT |
152 | memcpy(&readdir->verifier, verifier, sizeof(readdir->verifier)); |
153 | return; | |
154 | } | |
155 | ||
156 | readdir->cookie = 0; | |
157 | memset(&readdir->verifier, 0, sizeof(readdir->verifier)); | |
158 | if (cookie == 2) | |
159 | return; | |
160 | ||
161 | /* | |
162 | * NFSv4 servers do not return entries for '.' and '..' | |
163 | * Therefore, we fake these entries here. We let '.' | |
164 | * have cookie 0 and '..' have cookie 1. Note that | |
165 | * when talking to the server, we always send cookie 0 | |
166 | * instead of 1 or 2. | |
167 | */ | |
0dbb4c67 | 168 | start = p = kmap_atomic(*readdir->pages, KM_USER0); |
1da177e4 LT |
169 | |
170 | if (cookie == 0) { | |
171 | *p++ = xdr_one; /* next */ | |
172 | *p++ = xdr_zero; /* cookie, first word */ | |
173 | *p++ = xdr_one; /* cookie, second word */ | |
174 | *p++ = xdr_one; /* entry len */ | |
175 | memcpy(p, ".\0\0\0", 4); /* entry */ | |
176 | p++; | |
177 | *p++ = xdr_one; /* bitmap length */ | |
178 | *p++ = htonl(FATTR4_WORD0_FILEID); /* bitmap */ | |
179 | *p++ = htonl(8); /* attribute buffer length */ | |
180 | p = xdr_encode_hyper(p, dentry->d_inode->i_ino); | |
181 | } | |
182 | ||
183 | *p++ = xdr_one; /* next */ | |
184 | *p++ = xdr_zero; /* cookie, first word */ | |
185 | *p++ = xdr_two; /* cookie, second word */ | |
186 | *p++ = xdr_two; /* entry len */ | |
187 | memcpy(p, "..\0\0", 4); /* entry */ | |
188 | p++; | |
189 | *p++ = xdr_one; /* bitmap length */ | |
190 | *p++ = htonl(FATTR4_WORD0_FILEID); /* bitmap */ | |
191 | *p++ = htonl(8); /* attribute buffer length */ | |
192 | p = xdr_encode_hyper(p, dentry->d_parent->d_inode->i_ino); | |
193 | ||
194 | readdir->pgbase = (char *)p - (char *)start; | |
195 | readdir->count -= readdir->pgbase; | |
196 | kunmap_atomic(start, KM_USER0); | |
197 | } | |
198 | ||
26e976a8 | 199 | static void renew_lease(const struct nfs_server *server, unsigned long timestamp) |
1da177e4 | 200 | { |
7539bbab | 201 | struct nfs_client *clp = server->nfs_client; |
1da177e4 LT |
202 | spin_lock(&clp->cl_lock); |
203 | if (time_before(clp->cl_last_renewal,timestamp)) | |
204 | clp->cl_last_renewal = timestamp; | |
205 | spin_unlock(&clp->cl_lock); | |
206 | } | |
207 | ||
38478b24 | 208 | static void update_changeattr(struct inode *dir, struct nfs4_change_info *cinfo) |
1da177e4 | 209 | { |
38478b24 | 210 | struct nfs_inode *nfsi = NFS_I(dir); |
1da177e4 | 211 | |
38478b24 TM |
212 | spin_lock(&dir->i_lock); |
213 | nfsi->cache_validity |= NFS_INO_INVALID_ATTR|NFS_INO_REVAL_PAGECACHE|NFS_INO_INVALID_DATA; | |
1da177e4 LT |
214 | if (cinfo->before == nfsi->change_attr && cinfo->atomic) |
215 | nfsi->change_attr = cinfo->after; | |
38478b24 | 216 | spin_unlock(&dir->i_lock); |
1da177e4 LT |
217 | } |
218 | ||
e56e0b78 | 219 | struct nfs4_opendata { |
c6d00e63 | 220 | struct kref kref; |
e56e0b78 TM |
221 | struct nfs_openargs o_arg; |
222 | struct nfs_openres o_res; | |
cdd4e68b TM |
223 | struct nfs_open_confirmargs c_arg; |
224 | struct nfs_open_confirmres c_res; | |
e56e0b78 TM |
225 | struct nfs_fattr f_attr; |
226 | struct nfs_fattr dir_attr; | |
ad389da7 | 227 | struct path path; |
e56e0b78 TM |
228 | struct dentry *dir; |
229 | struct nfs4_state_owner *owner; | |
aac00a8d | 230 | struct nfs4_state *state; |
e56e0b78 | 231 | struct iattr attrs; |
26e976a8 | 232 | unsigned long timestamp; |
3e309914 | 233 | unsigned int rpc_done : 1; |
24ac23ab TM |
234 | int rpc_status; |
235 | int cancelled; | |
e56e0b78 TM |
236 | }; |
237 | ||
2ced46c2 TM |
238 | |
239 | static void nfs4_init_opendata_res(struct nfs4_opendata *p) | |
240 | { | |
241 | p->o_res.f_attr = &p->f_attr; | |
242 | p->o_res.dir_attr = &p->dir_attr; | |
243 | p->o_res.server = p->o_arg.server; | |
244 | nfs_fattr_init(&p->f_attr); | |
245 | nfs_fattr_init(&p->dir_attr); | |
246 | } | |
247 | ||
ad389da7 | 248 | static struct nfs4_opendata *nfs4_opendata_alloc(struct path *path, |
e56e0b78 TM |
249 | struct nfs4_state_owner *sp, int flags, |
250 | const struct iattr *attrs) | |
251 | { | |
ad389da7 | 252 | struct dentry *parent = dget_parent(path->dentry); |
e56e0b78 TM |
253 | struct inode *dir = parent->d_inode; |
254 | struct nfs_server *server = NFS_SERVER(dir); | |
255 | struct nfs4_opendata *p; | |
256 | ||
257 | p = kzalloc(sizeof(*p), GFP_KERNEL); | |
258 | if (p == NULL) | |
259 | goto err; | |
260 | p->o_arg.seqid = nfs_alloc_seqid(&sp->so_seqid); | |
261 | if (p->o_arg.seqid == NULL) | |
262 | goto err_free; | |
ad389da7 TM |
263 | p->path.mnt = mntget(path->mnt); |
264 | p->path.dentry = dget(path->dentry); | |
e56e0b78 TM |
265 | p->dir = parent; |
266 | p->owner = sp; | |
267 | atomic_inc(&sp->so_count); | |
268 | p->o_arg.fh = NFS_FH(dir); | |
269 | p->o_arg.open_flags = flags, | |
7539bbab | 270 | p->o_arg.clientid = server->nfs_client->cl_clientid; |
9f958ab8 | 271 | p->o_arg.id = sp->so_owner_id.id; |
ad389da7 | 272 | p->o_arg.name = &p->path.dentry->d_name; |
e56e0b78 TM |
273 | p->o_arg.server = server; |
274 | p->o_arg.bitmask = server->attr_bitmask; | |
275 | p->o_arg.claim = NFS4_OPEN_CLAIM_NULL; | |
e56e0b78 TM |
276 | if (flags & O_EXCL) { |
277 | u32 *s = (u32 *) p->o_arg.u.verifier.data; | |
278 | s[0] = jiffies; | |
279 | s[1] = current->pid; | |
280 | } else if (flags & O_CREAT) { | |
281 | p->o_arg.u.attrs = &p->attrs; | |
282 | memcpy(&p->attrs, attrs, sizeof(p->attrs)); | |
283 | } | |
cdd4e68b TM |
284 | p->c_arg.fh = &p->o_res.fh; |
285 | p->c_arg.stateid = &p->o_res.stateid; | |
286 | p->c_arg.seqid = p->o_arg.seqid; | |
2ced46c2 | 287 | nfs4_init_opendata_res(p); |
c6d00e63 | 288 | kref_init(&p->kref); |
e56e0b78 TM |
289 | return p; |
290 | err_free: | |
291 | kfree(p); | |
292 | err: | |
293 | dput(parent); | |
294 | return NULL; | |
295 | } | |
296 | ||
c6d00e63 | 297 | static void nfs4_opendata_free(struct kref *kref) |
e56e0b78 | 298 | { |
c6d00e63 TM |
299 | struct nfs4_opendata *p = container_of(kref, |
300 | struct nfs4_opendata, kref); | |
301 | ||
302 | nfs_free_seqid(p->o_arg.seqid); | |
aac00a8d TM |
303 | if (p->state != NULL) |
304 | nfs4_put_open_state(p->state); | |
c6d00e63 TM |
305 | nfs4_put_state_owner(p->owner); |
306 | dput(p->dir); | |
307 | dput(p->path.dentry); | |
308 | mntput(p->path.mnt); | |
309 | kfree(p); | |
310 | } | |
311 | ||
312 | static void nfs4_opendata_put(struct nfs4_opendata *p) | |
313 | { | |
314 | if (p != NULL) | |
315 | kref_put(&p->kref, nfs4_opendata_free); | |
e56e0b78 TM |
316 | } |
317 | ||
06f814a3 TM |
318 | static int nfs4_wait_for_completion_rpc_task(struct rpc_task *task) |
319 | { | |
320 | sigset_t oldset; | |
321 | int ret; | |
322 | ||
323 | rpc_clnt_sigmask(task->tk_client, &oldset); | |
324 | ret = rpc_wait_for_completion_task(task); | |
325 | rpc_clnt_sigunmask(task->tk_client, &oldset); | |
326 | return ret; | |
327 | } | |
328 | ||
6ee41268 TM |
329 | static int can_open_cached(struct nfs4_state *state, int mode) |
330 | { | |
331 | int ret = 0; | |
332 | switch (mode & (FMODE_READ|FMODE_WRITE|O_EXCL)) { | |
333 | case FMODE_READ: | |
334 | ret |= test_bit(NFS_O_RDONLY_STATE, &state->flags) != 0; | |
6ee41268 TM |
335 | break; |
336 | case FMODE_WRITE: | |
337 | ret |= test_bit(NFS_O_WRONLY_STATE, &state->flags) != 0; | |
6ee41268 TM |
338 | break; |
339 | case FMODE_READ|FMODE_WRITE: | |
340 | ret |= test_bit(NFS_O_RDWR_STATE, &state->flags) != 0; | |
341 | } | |
342 | return ret; | |
343 | } | |
344 | ||
aac00a8d TM |
345 | static int can_open_delegated(struct nfs_delegation *delegation, mode_t open_flags) |
346 | { | |
347 | if ((delegation->type & open_flags) != open_flags) | |
348 | return 0; | |
349 | if (delegation->flags & NFS_DELEGATION_NEED_RECLAIM) | |
350 | return 0; | |
351 | return 1; | |
352 | } | |
353 | ||
003707c7 | 354 | static void update_open_stateflags(struct nfs4_state *state, mode_t open_flags) |
e7616923 TM |
355 | { |
356 | switch (open_flags) { | |
357 | case FMODE_WRITE: | |
358 | state->n_wronly++; | |
359 | break; | |
360 | case FMODE_READ: | |
361 | state->n_rdonly++; | |
362 | break; | |
363 | case FMODE_READ|FMODE_WRITE: | |
364 | state->n_rdwr++; | |
365 | } | |
003707c7 TM |
366 | nfs4_state_set_mode_locked(state, state->state | open_flags); |
367 | } | |
368 | ||
369 | static void nfs_set_open_stateid_locked(struct nfs4_state *state, nfs4_stateid *stateid, int open_flags) | |
370 | { | |
371 | if (test_bit(NFS_DELEGATED_STATE, &state->flags) == 0) | |
372 | memcpy(state->stateid.data, stateid->data, sizeof(state->stateid.data)); | |
373 | memcpy(state->open_stateid.data, stateid->data, sizeof(state->open_stateid.data)); | |
374 | switch (open_flags) { | |
375 | case FMODE_READ: | |
376 | set_bit(NFS_O_RDONLY_STATE, &state->flags); | |
377 | break; | |
378 | case FMODE_WRITE: | |
379 | set_bit(NFS_O_WRONLY_STATE, &state->flags); | |
380 | break; | |
381 | case FMODE_READ|FMODE_WRITE: | |
382 | set_bit(NFS_O_RDWR_STATE, &state->flags); | |
383 | } | |
e7616923 TM |
384 | } |
385 | ||
003707c7 TM |
386 | static void nfs_set_open_stateid(struct nfs4_state *state, nfs4_stateid *stateid, int open_flags) |
387 | { | |
8bda4e4c | 388 | write_seqlock(&state->seqlock); |
003707c7 | 389 | nfs_set_open_stateid_locked(state, stateid, open_flags); |
8bda4e4c | 390 | write_sequnlock(&state->seqlock); |
003707c7 TM |
391 | } |
392 | ||
393 | static void update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stateid, nfs4_stateid *deleg_stateid, int open_flags) | |
1da177e4 | 394 | { |
1da177e4 | 395 | open_flags &= (FMODE_READ|FMODE_WRITE); |
8bda4e4c TM |
396 | /* |
397 | * Protect the call to nfs4_state_set_mode_locked and | |
398 | * serialise the stateid update | |
399 | */ | |
400 | write_seqlock(&state->seqlock); | |
003707c7 TM |
401 | if (deleg_stateid != NULL) { |
402 | memcpy(state->stateid.data, deleg_stateid->data, sizeof(state->stateid.data)); | |
403 | set_bit(NFS_DELEGATED_STATE, &state->flags); | |
404 | } | |
405 | if (open_stateid != NULL) | |
406 | nfs_set_open_stateid_locked(state, open_stateid, open_flags); | |
8bda4e4c TM |
407 | write_sequnlock(&state->seqlock); |
408 | spin_lock(&state->owner->so_lock); | |
e7616923 | 409 | update_open_stateflags(state, open_flags); |
ec073428 | 410 | spin_unlock(&state->owner->so_lock); |
1da177e4 LT |
411 | } |
412 | ||
aac00a8d TM |
413 | static void nfs4_return_incompatible_delegation(struct inode *inode, mode_t open_flags) |
414 | { | |
415 | struct nfs_delegation *delegation; | |
416 | ||
417 | rcu_read_lock(); | |
418 | delegation = rcu_dereference(NFS_I(inode)->delegation); | |
419 | if (delegation == NULL || (delegation->type & open_flags) == open_flags) { | |
420 | rcu_read_unlock(); | |
421 | return; | |
422 | } | |
423 | rcu_read_unlock(); | |
424 | nfs_inode_return_delegation(inode); | |
425 | } | |
426 | ||
6ee41268 | 427 | static struct nfs4_state *nfs4_try_open_cached(struct nfs4_opendata *opendata) |
aac00a8d TM |
428 | { |
429 | struct nfs4_state *state = opendata->state; | |
430 | struct nfs_inode *nfsi = NFS_I(state->inode); | |
431 | struct nfs_delegation *delegation; | |
432 | int open_mode = opendata->o_arg.open_flags & (FMODE_READ|FMODE_WRITE|O_EXCL); | |
433 | nfs4_stateid stateid; | |
434 | int ret = -EAGAIN; | |
435 | ||
436 | rcu_read_lock(); | |
437 | delegation = rcu_dereference(nfsi->delegation); | |
aac00a8d | 438 | for (;;) { |
6ee41268 TM |
439 | if (can_open_cached(state, open_mode)) { |
440 | spin_lock(&state->owner->so_lock); | |
441 | if (can_open_cached(state, open_mode)) { | |
442 | update_open_stateflags(state, open_mode); | |
443 | spin_unlock(&state->owner->so_lock); | |
444 | rcu_read_unlock(); | |
445 | goto out_return_state; | |
446 | } | |
447 | spin_unlock(&state->owner->so_lock); | |
448 | } | |
449 | if (delegation == NULL) | |
450 | break; | |
aac00a8d TM |
451 | if (!can_open_delegated(delegation, open_mode)) |
452 | break; | |
453 | /* Save the delegation */ | |
454 | memcpy(stateid.data, delegation->stateid.data, sizeof(stateid.data)); | |
455 | rcu_read_unlock(); | |
456 | lock_kernel(); | |
457 | ret = _nfs4_do_access(state->inode, state->owner->so_cred, open_mode); | |
458 | unlock_kernel(); | |
459 | if (ret != 0) | |
460 | goto out; | |
461 | ret = -EAGAIN; | |
462 | rcu_read_lock(); | |
463 | delegation = rcu_dereference(nfsi->delegation); | |
6ee41268 | 464 | /* If no delegation, try a cached open */ |
aac00a8d | 465 | if (delegation == NULL) |
6ee41268 | 466 | continue; |
aac00a8d TM |
467 | /* Is the delegation still valid? */ |
468 | if (memcmp(stateid.data, delegation->stateid.data, sizeof(stateid.data)) != 0) | |
469 | continue; | |
470 | rcu_read_unlock(); | |
471 | update_open_stateid(state, NULL, &stateid, open_mode); | |
472 | goto out_return_state; | |
473 | } | |
aac00a8d TM |
474 | rcu_read_unlock(); |
475 | out: | |
476 | return ERR_PTR(ret); | |
477 | out_return_state: | |
478 | atomic_inc(&state->count); | |
479 | return state; | |
480 | } | |
481 | ||
24ac23ab TM |
482 | static struct nfs4_state *nfs4_opendata_to_nfs4_state(struct nfs4_opendata *data) |
483 | { | |
484 | struct inode *inode; | |
485 | struct nfs4_state *state = NULL; | |
003707c7 TM |
486 | struct nfs_delegation *delegation; |
487 | nfs4_stateid *deleg_stateid = NULL; | |
1b370bc2 | 488 | int ret; |
24ac23ab | 489 | |
aac00a8d | 490 | if (!data->rpc_done) { |
6ee41268 | 491 | state = nfs4_try_open_cached(data); |
aac00a8d TM |
492 | goto out; |
493 | } | |
494 | ||
1b370bc2 | 495 | ret = -EAGAIN; |
24ac23ab | 496 | if (!(data->f_attr.valid & NFS_ATTR_FATTR)) |
1b370bc2 | 497 | goto err; |
24ac23ab | 498 | inode = nfs_fhget(data->dir->d_sb, &data->o_res.fh, &data->f_attr); |
1b370bc2 | 499 | ret = PTR_ERR(inode); |
03f28e3a | 500 | if (IS_ERR(inode)) |
1b370bc2 TM |
501 | goto err; |
502 | ret = -ENOMEM; | |
24ac23ab TM |
503 | state = nfs4_get_open_state(inode, data->owner); |
504 | if (state == NULL) | |
1b370bc2 | 505 | goto err_put_inode; |
549d6ed5 | 506 | if (data->o_res.delegation_type != 0) { |
549d6ed5 TM |
507 | int delegation_flags = 0; |
508 | ||
003707c7 TM |
509 | rcu_read_lock(); |
510 | delegation = rcu_dereference(NFS_I(inode)->delegation); | |
511 | if (delegation) | |
512 | delegation_flags = delegation->flags; | |
513 | rcu_read_unlock(); | |
549d6ed5 TM |
514 | if (!(delegation_flags & NFS_DELEGATION_NEED_RECLAIM)) |
515 | nfs_inode_set_delegation(state->inode, | |
516 | data->owner->so_cred, | |
517 | &data->o_res); | |
518 | else | |
519 | nfs_inode_reclaim_delegation(state->inode, | |
520 | data->owner->so_cred, | |
521 | &data->o_res); | |
522 | } | |
003707c7 TM |
523 | rcu_read_lock(); |
524 | delegation = rcu_dereference(NFS_I(inode)->delegation); | |
525 | if (delegation != NULL) | |
526 | deleg_stateid = &delegation->stateid; | |
527 | update_open_stateid(state, &data->o_res.stateid, deleg_stateid, data->o_arg.open_flags); | |
528 | rcu_read_unlock(); | |
24ac23ab | 529 | iput(inode); |
aac00a8d | 530 | out: |
24ac23ab | 531 | return state; |
1b370bc2 TM |
532 | err_put_inode: |
533 | iput(inode); | |
534 | err: | |
535 | return ERR_PTR(ret); | |
24ac23ab TM |
536 | } |
537 | ||
864472e9 TM |
538 | static struct nfs_open_context *nfs4_state_find_open_context(struct nfs4_state *state) |
539 | { | |
540 | struct nfs_inode *nfsi = NFS_I(state->inode); | |
541 | struct nfs_open_context *ctx; | |
542 | ||
543 | spin_lock(&state->inode->i_lock); | |
544 | list_for_each_entry(ctx, &nfsi->open_files, list) { | |
545 | if (ctx->state != state) | |
546 | continue; | |
547 | get_nfs_open_context(ctx); | |
548 | spin_unlock(&state->inode->i_lock); | |
549 | return ctx; | |
550 | } | |
551 | spin_unlock(&state->inode->i_lock); | |
552 | return ERR_PTR(-ENOENT); | |
553 | } | |
554 | ||
6f220ed5 TM |
555 | static struct nfs4_opendata *nfs4_open_recoverdata_alloc(struct nfs_open_context *ctx, struct nfs4_state *state) |
556 | { | |
557 | struct nfs4_opendata *opendata; | |
558 | ||
559 | opendata = nfs4_opendata_alloc(&ctx->path, state->owner, 0, NULL); | |
560 | if (opendata == NULL) | |
561 | return ERR_PTR(-ENOMEM); | |
562 | opendata->state = state; | |
563 | atomic_inc(&state->count); | |
564 | return opendata; | |
565 | } | |
566 | ||
2ced46c2 | 567 | static int nfs4_open_recover_helper(struct nfs4_opendata *opendata, mode_t openflags, struct nfs4_state **res) |
864472e9 | 568 | { |
2ced46c2 | 569 | struct nfs4_state *newstate; |
864472e9 TM |
570 | int ret; |
571 | ||
572 | opendata->o_arg.open_flags = openflags; | |
2ced46c2 TM |
573 | memset(&opendata->o_res, 0, sizeof(opendata->o_res)); |
574 | memset(&opendata->c_res, 0, sizeof(opendata->c_res)); | |
575 | nfs4_init_opendata_res(opendata); | |
864472e9 TM |
576 | ret = _nfs4_proc_open(opendata); |
577 | if (ret != 0) | |
578 | return ret; | |
2ced46c2 | 579 | newstate = nfs4_opendata_to_nfs4_state(opendata); |
1b370bc2 TM |
580 | if (IS_ERR(newstate)) |
581 | return PTR_ERR(newstate); | |
582 | nfs4_close_state(&opendata->path, newstate, openflags); | |
2ced46c2 | 583 | *res = newstate; |
864472e9 TM |
584 | return 0; |
585 | } | |
586 | ||
587 | static int nfs4_open_recover(struct nfs4_opendata *opendata, struct nfs4_state *state) | |
588 | { | |
864472e9 | 589 | struct nfs4_state *newstate; |
864472e9 TM |
590 | int ret; |
591 | ||
592 | /* memory barrier prior to reading state->n_* */ | |
2ced46c2 | 593 | clear_bit(NFS_DELEGATED_STATE, &state->flags); |
864472e9 TM |
594 | smp_rmb(); |
595 | if (state->n_rdwr != 0) { | |
2ced46c2 | 596 | ret = nfs4_open_recover_helper(opendata, FMODE_READ|FMODE_WRITE, &newstate); |
864472e9 TM |
597 | if (ret != 0) |
598 | return ret; | |
2ced46c2 TM |
599 | if (newstate != state) |
600 | return -ESTALE; | |
864472e9 TM |
601 | } |
602 | if (state->n_wronly != 0) { | |
2ced46c2 | 603 | ret = nfs4_open_recover_helper(opendata, FMODE_WRITE, &newstate); |
864472e9 TM |
604 | if (ret != 0) |
605 | return ret; | |
2ced46c2 TM |
606 | if (newstate != state) |
607 | return -ESTALE; | |
864472e9 TM |
608 | } |
609 | if (state->n_rdonly != 0) { | |
2ced46c2 | 610 | ret = nfs4_open_recover_helper(opendata, FMODE_READ, &newstate); |
864472e9 TM |
611 | if (ret != 0) |
612 | return ret; | |
2ced46c2 TM |
613 | if (newstate != state) |
614 | return -ESTALE; | |
864472e9 | 615 | } |
1ac7e2fd TM |
616 | /* |
617 | * We may have performed cached opens for all three recoveries. | |
618 | * Check if we need to update the current stateid. | |
619 | */ | |
620 | if (test_bit(NFS_DELEGATED_STATE, &state->flags) == 0 && | |
621 | memcmp(state->stateid.data, state->open_stateid.data, sizeof(state->stateid.data)) != 0) { | |
8bda4e4c | 622 | write_seqlock(&state->seqlock); |
1ac7e2fd TM |
623 | if (test_bit(NFS_DELEGATED_STATE, &state->flags) == 0) |
624 | memcpy(state->stateid.data, state->open_stateid.data, sizeof(state->stateid.data)); | |
8bda4e4c | 625 | write_sequnlock(&state->seqlock); |
1ac7e2fd | 626 | } |
864472e9 TM |
627 | return 0; |
628 | } | |
629 | ||
1da177e4 LT |
630 | /* |
631 | * OPEN_RECLAIM: | |
632 | * reclaim state on the server after a reboot. | |
1da177e4 | 633 | */ |
539cd03a | 634 | static int _nfs4_do_open_reclaim(struct nfs_open_context *ctx, struct nfs4_state *state) |
1da177e4 | 635 | { |
1ac7e2fd | 636 | struct nfs_delegation *delegation; |
864472e9 TM |
637 | struct nfs4_opendata *opendata; |
638 | int delegation_type = 0; | |
1da177e4 LT |
639 | int status; |
640 | ||
6f220ed5 TM |
641 | opendata = nfs4_open_recoverdata_alloc(ctx, state); |
642 | if (IS_ERR(opendata)) | |
643 | return PTR_ERR(opendata); | |
864472e9 TM |
644 | opendata->o_arg.claim = NFS4_OPEN_CLAIM_PREVIOUS; |
645 | opendata->o_arg.fh = NFS_FH(state->inode); | |
1ac7e2fd TM |
646 | rcu_read_lock(); |
647 | delegation = rcu_dereference(NFS_I(state->inode)->delegation); | |
648 | if (delegation != NULL && (delegation->flags & NFS_DELEGATION_NEED_RECLAIM) != 0) | |
65bbf6bd | 649 | delegation_type = delegation->type; |
1ac7e2fd | 650 | rcu_read_unlock(); |
864472e9 TM |
651 | opendata->o_arg.u.delegation_type = delegation_type; |
652 | status = nfs4_open_recover(opendata, state); | |
c6d00e63 | 653 | nfs4_opendata_put(opendata); |
1da177e4 LT |
654 | return status; |
655 | } | |
656 | ||
539cd03a | 657 | static int nfs4_do_open_reclaim(struct nfs_open_context *ctx, struct nfs4_state *state) |
1da177e4 LT |
658 | { |
659 | struct nfs_server *server = NFS_SERVER(state->inode); | |
660 | struct nfs4_exception exception = { }; | |
661 | int err; | |
662 | do { | |
539cd03a | 663 | err = _nfs4_do_open_reclaim(ctx, state); |
202b50dc TM |
664 | if (err != -NFS4ERR_DELAY) |
665 | break; | |
666 | nfs4_handle_exception(server, err, &exception); | |
1da177e4 LT |
667 | } while (exception.retry); |
668 | return err; | |
669 | } | |
670 | ||
864472e9 TM |
671 | static int nfs4_open_reclaim(struct nfs4_state_owner *sp, struct nfs4_state *state) |
672 | { | |
673 | struct nfs_open_context *ctx; | |
674 | int ret; | |
675 | ||
676 | ctx = nfs4_state_find_open_context(state); | |
677 | if (IS_ERR(ctx)) | |
678 | return PTR_ERR(ctx); | |
539cd03a | 679 | ret = nfs4_do_open_reclaim(ctx, state); |
864472e9 TM |
680 | put_nfs_open_context(ctx); |
681 | return ret; | |
682 | } | |
683 | ||
13437e12 | 684 | static int _nfs4_open_delegation_recall(struct nfs_open_context *ctx, struct nfs4_state *state, const nfs4_stateid *stateid) |
1da177e4 | 685 | { |
e56e0b78 | 686 | struct nfs4_opendata *opendata; |
864472e9 | 687 | int ret; |
1da177e4 | 688 | |
6f220ed5 TM |
689 | opendata = nfs4_open_recoverdata_alloc(ctx, state); |
690 | if (IS_ERR(opendata)) | |
691 | return PTR_ERR(opendata); | |
e56e0b78 | 692 | opendata->o_arg.claim = NFS4_OPEN_CLAIM_DELEGATE_CUR; |
13437e12 | 693 | memcpy(opendata->o_arg.u.delegation.data, stateid->data, |
e56e0b78 | 694 | sizeof(opendata->o_arg.u.delegation.data)); |
864472e9 | 695 | ret = nfs4_open_recover(opendata, state); |
c6d00e63 | 696 | nfs4_opendata_put(opendata); |
864472e9 | 697 | return ret; |
1da177e4 LT |
698 | } |
699 | ||
13437e12 | 700 | int nfs4_open_delegation_recall(struct nfs_open_context *ctx, struct nfs4_state *state, const nfs4_stateid *stateid) |
1da177e4 LT |
701 | { |
702 | struct nfs4_exception exception = { }; | |
539cd03a | 703 | struct nfs_server *server = NFS_SERVER(state->inode); |
1da177e4 LT |
704 | int err; |
705 | do { | |
13437e12 | 706 | err = _nfs4_open_delegation_recall(ctx, state, stateid); |
1da177e4 LT |
707 | switch (err) { |
708 | case 0: | |
709 | return err; | |
710 | case -NFS4ERR_STALE_CLIENTID: | |
711 | case -NFS4ERR_STALE_STATEID: | |
712 | case -NFS4ERR_EXPIRED: | |
713 | /* Don't recall a delegation if it was lost */ | |
7539bbab | 714 | nfs4_schedule_state_recovery(server->nfs_client); |
1da177e4 LT |
715 | return err; |
716 | } | |
717 | err = nfs4_handle_exception(server, err, &exception); | |
718 | } while (exception.retry); | |
719 | return err; | |
720 | } | |
721 | ||
cdd4e68b | 722 | static void nfs4_open_confirm_prepare(struct rpc_task *task, void *calldata) |
1da177e4 | 723 | { |
cdd4e68b TM |
724 | struct nfs4_opendata *data = calldata; |
725 | struct rpc_message msg = { | |
726 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN_CONFIRM], | |
727 | .rpc_argp = &data->c_arg, | |
728 | .rpc_resp = &data->c_res, | |
729 | .rpc_cred = data->owner->so_cred, | |
1da177e4 | 730 | }; |
26e976a8 | 731 | data->timestamp = jiffies; |
cdd4e68b TM |
732 | rpc_call_setup(task, &msg, 0); |
733 | } | |
734 | ||
735 | static void nfs4_open_confirm_done(struct rpc_task *task, void *calldata) | |
736 | { | |
737 | struct nfs4_opendata *data = calldata; | |
738 | ||
739 | data->rpc_status = task->tk_status; | |
740 | if (RPC_ASSASSINATED(task)) | |
741 | return; | |
26e976a8 | 742 | if (data->rpc_status == 0) { |
cdd4e68b TM |
743 | memcpy(data->o_res.stateid.data, data->c_res.stateid.data, |
744 | sizeof(data->o_res.stateid.data)); | |
26e976a8 | 745 | renew_lease(data->o_res.server, data->timestamp); |
3e309914 | 746 | data->rpc_done = 1; |
26e976a8 | 747 | } |
cdd4e68b | 748 | nfs_confirm_seqid(&data->owner->so_seqid, data->rpc_status); |
0f9f95e0 | 749 | nfs_increment_open_seqid(data->rpc_status, data->c_arg.seqid); |
cdd4e68b TM |
750 | } |
751 | ||
752 | static void nfs4_open_confirm_release(void *calldata) | |
753 | { | |
754 | struct nfs4_opendata *data = calldata; | |
755 | struct nfs4_state *state = NULL; | |
756 | ||
757 | /* If this request hasn't been cancelled, do nothing */ | |
758 | if (data->cancelled == 0) | |
759 | goto out_free; | |
760 | /* In case of error, no cleanup! */ | |
3e309914 | 761 | if (!data->rpc_done) |
cdd4e68b TM |
762 | goto out_free; |
763 | nfs_confirm_seqid(&data->owner->so_seqid, 0); | |
764 | state = nfs4_opendata_to_nfs4_state(data); | |
1b370bc2 | 765 | if (!IS_ERR(state)) |
4a35bd41 | 766 | nfs4_close_state(&data->path, state, data->o_arg.open_flags); |
cdd4e68b | 767 | out_free: |
c6d00e63 | 768 | nfs4_opendata_put(data); |
cdd4e68b TM |
769 | } |
770 | ||
771 | static const struct rpc_call_ops nfs4_open_confirm_ops = { | |
772 | .rpc_call_prepare = nfs4_open_confirm_prepare, | |
773 | .rpc_call_done = nfs4_open_confirm_done, | |
774 | .rpc_release = nfs4_open_confirm_release, | |
775 | }; | |
776 | ||
777 | /* | |
778 | * Note: On error, nfs4_proc_open_confirm will free the struct nfs4_opendata | |
779 | */ | |
780 | static int _nfs4_proc_open_confirm(struct nfs4_opendata *data) | |
781 | { | |
782 | struct nfs_server *server = NFS_SERVER(data->dir->d_inode); | |
783 | struct rpc_task *task; | |
1da177e4 LT |
784 | int status; |
785 | ||
c6d00e63 | 786 | kref_get(&data->kref); |
3e309914 TM |
787 | data->rpc_done = 0; |
788 | data->rpc_status = 0; | |
cdd4e68b | 789 | task = rpc_run_task(server->client, RPC_TASK_ASYNC, &nfs4_open_confirm_ops, data); |
7a1218a2 | 790 | if (IS_ERR(task)) |
cdd4e68b | 791 | return PTR_ERR(task); |
cdd4e68b TM |
792 | status = nfs4_wait_for_completion_rpc_task(task); |
793 | if (status != 0) { | |
794 | data->cancelled = 1; | |
795 | smp_wmb(); | |
796 | } else | |
797 | status = data->rpc_status; | |
e6b3c4db | 798 | rpc_put_task(task); |
1da177e4 LT |
799 | return status; |
800 | } | |
801 | ||
24ac23ab | 802 | static void nfs4_open_prepare(struct rpc_task *task, void *calldata) |
1da177e4 | 803 | { |
24ac23ab TM |
804 | struct nfs4_opendata *data = calldata; |
805 | struct nfs4_state_owner *sp = data->owner; | |
1da177e4 LT |
806 | struct rpc_message msg = { |
807 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN], | |
24ac23ab TM |
808 | .rpc_argp = &data->o_arg, |
809 | .rpc_resp = &data->o_res, | |
1da177e4 LT |
810 | .rpc_cred = sp->so_cred, |
811 | }; | |
24ac23ab TM |
812 | |
813 | if (nfs_wait_on_sequence(data->o_arg.seqid, task) != 0) | |
814 | return; | |
aac00a8d TM |
815 | /* |
816 | * Check if we still need to send an OPEN call, or if we can use | |
817 | * a delegation instead. | |
818 | */ | |
819 | if (data->state != NULL) { | |
820 | struct nfs_delegation *delegation; | |
821 | ||
6ee41268 TM |
822 | if (can_open_cached(data->state, data->o_arg.open_flags & (FMODE_READ|FMODE_WRITE|O_EXCL))) |
823 | goto out_no_action; | |
aac00a8d TM |
824 | rcu_read_lock(); |
825 | delegation = rcu_dereference(NFS_I(data->state->inode)->delegation); | |
826 | if (delegation != NULL && | |
827 | (delegation->flags & NFS_DELEGATION_NEED_RECLAIM) == 0) { | |
828 | rcu_read_unlock(); | |
6ee41268 | 829 | goto out_no_action; |
aac00a8d TM |
830 | } |
831 | rcu_read_unlock(); | |
832 | } | |
24ac23ab | 833 | /* Update sequence id. */ |
9f958ab8 | 834 | data->o_arg.id = sp->so_owner_id.id; |
24ac23ab | 835 | data->o_arg.clientid = sp->so_client->cl_clientid; |
6f220ed5 | 836 | if (data->o_arg.claim == NFS4_OPEN_CLAIM_PREVIOUS) { |
864472e9 | 837 | msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN_NOATTR]; |
6f220ed5 TM |
838 | nfs_copy_fh(&data->o_res.fh, data->o_arg.fh); |
839 | } | |
26e976a8 | 840 | data->timestamp = jiffies; |
24ac23ab | 841 | rpc_call_setup(task, &msg, 0); |
6ee41268 TM |
842 | return; |
843 | out_no_action: | |
844 | task->tk_action = NULL; | |
845 | ||
24ac23ab | 846 | } |
1da177e4 | 847 | |
24ac23ab TM |
848 | static void nfs4_open_done(struct rpc_task *task, void *calldata) |
849 | { | |
850 | struct nfs4_opendata *data = calldata; | |
1da177e4 | 851 | |
24ac23ab TM |
852 | data->rpc_status = task->tk_status; |
853 | if (RPC_ASSASSINATED(task)) | |
854 | return; | |
855 | if (task->tk_status == 0) { | |
856 | switch (data->o_res.f_attr->mode & S_IFMT) { | |
6f926b5b TM |
857 | case S_IFREG: |
858 | break; | |
859 | case S_IFLNK: | |
24ac23ab | 860 | data->rpc_status = -ELOOP; |
6f926b5b TM |
861 | break; |
862 | case S_IFDIR: | |
24ac23ab | 863 | data->rpc_status = -EISDIR; |
6f926b5b TM |
864 | break; |
865 | default: | |
24ac23ab | 866 | data->rpc_status = -ENOTDIR; |
6f926b5b | 867 | } |
26e976a8 | 868 | renew_lease(data->o_res.server, data->timestamp); |
0f9f95e0 TM |
869 | if (!(data->o_res.rflags & NFS4_OPEN_RESULT_CONFIRM)) |
870 | nfs_confirm_seqid(&data->owner->so_seqid, 0); | |
6f926b5b | 871 | } |
24ac23ab | 872 | nfs_increment_open_seqid(data->rpc_status, data->o_arg.seqid); |
3e309914 | 873 | data->rpc_done = 1; |
24ac23ab | 874 | } |
6f926b5b | 875 | |
24ac23ab TM |
876 | static void nfs4_open_release(void *calldata) |
877 | { | |
878 | struct nfs4_opendata *data = calldata; | |
879 | struct nfs4_state *state = NULL; | |
880 | ||
881 | /* If this request hasn't been cancelled, do nothing */ | |
882 | if (data->cancelled == 0) | |
883 | goto out_free; | |
884 | /* In case of error, no cleanup! */ | |
3e309914 | 885 | if (data->rpc_status != 0 || !data->rpc_done) |
24ac23ab TM |
886 | goto out_free; |
887 | /* In case we need an open_confirm, no cleanup! */ | |
888 | if (data->o_res.rflags & NFS4_OPEN_RESULT_CONFIRM) | |
889 | goto out_free; | |
890 | nfs_confirm_seqid(&data->owner->so_seqid, 0); | |
891 | state = nfs4_opendata_to_nfs4_state(data); | |
1b370bc2 | 892 | if (!IS_ERR(state)) |
4a35bd41 | 893 | nfs4_close_state(&data->path, state, data->o_arg.open_flags); |
24ac23ab | 894 | out_free: |
c6d00e63 | 895 | nfs4_opendata_put(data); |
24ac23ab TM |
896 | } |
897 | ||
898 | static const struct rpc_call_ops nfs4_open_ops = { | |
899 | .rpc_call_prepare = nfs4_open_prepare, | |
900 | .rpc_call_done = nfs4_open_done, | |
901 | .rpc_release = nfs4_open_release, | |
902 | }; | |
903 | ||
904 | /* | |
905 | * Note: On error, nfs4_proc_open will free the struct nfs4_opendata | |
906 | */ | |
907 | static int _nfs4_proc_open(struct nfs4_opendata *data) | |
908 | { | |
909 | struct inode *dir = data->dir->d_inode; | |
910 | struct nfs_server *server = NFS_SERVER(dir); | |
911 | struct nfs_openargs *o_arg = &data->o_arg; | |
912 | struct nfs_openres *o_res = &data->o_res; | |
913 | struct rpc_task *task; | |
914 | int status; | |
915 | ||
c6d00e63 | 916 | kref_get(&data->kref); |
3e309914 TM |
917 | data->rpc_done = 0; |
918 | data->rpc_status = 0; | |
2ced46c2 | 919 | data->cancelled = 0; |
24ac23ab | 920 | task = rpc_run_task(server->client, RPC_TASK_ASYNC, &nfs4_open_ops, data); |
7a1218a2 | 921 | if (IS_ERR(task)) |
24ac23ab | 922 | return PTR_ERR(task); |
24ac23ab TM |
923 | status = nfs4_wait_for_completion_rpc_task(task); |
924 | if (status != 0) { | |
925 | data->cancelled = 1; | |
926 | smp_wmb(); | |
927 | } else | |
928 | status = data->rpc_status; | |
e6b3c4db | 929 | rpc_put_task(task); |
3e309914 | 930 | if (status != 0 || !data->rpc_done) |
24ac23ab TM |
931 | return status; |
932 | ||
9936781d TM |
933 | if (o_res->fh.size == 0) |
934 | _nfs4_proc_lookup(dir, o_arg->name, &o_res->fh, o_res->f_attr); | |
935 | ||
56ae19f3 TM |
936 | if (o_arg->open_flags & O_CREAT) { |
937 | update_changeattr(dir, &o_res->cinfo); | |
938 | nfs_post_op_update_inode(dir, o_res->dir_attr); | |
939 | } else | |
940 | nfs_refresh_inode(dir, o_res->dir_attr); | |
1da177e4 | 941 | if(o_res->rflags & NFS4_OPEN_RESULT_CONFIRM) { |
cdd4e68b | 942 | status = _nfs4_proc_open_confirm(data); |
1da177e4 | 943 | if (status != 0) |
24ac23ab | 944 | return status; |
1da177e4 LT |
945 | } |
946 | if (!(o_res->f_attr->valid & NFS_ATTR_FATTR)) | |
9936781d | 947 | _nfs4_proc_getattr(server, &o_res->fh, o_res->f_attr); |
24ac23ab | 948 | return 0; |
1da177e4 LT |
949 | } |
950 | ||
951 | static int _nfs4_do_access(struct inode *inode, struct rpc_cred *cred, int openflags) | |
952 | { | |
953 | struct nfs_access_entry cache; | |
954 | int mask = 0; | |
955 | int status; | |
956 | ||
957 | if (openflags & FMODE_READ) | |
958 | mask |= MAY_READ; | |
959 | if (openflags & FMODE_WRITE) | |
960 | mask |= MAY_WRITE; | |
1b45c46c TM |
961 | if (openflags & FMODE_EXEC) |
962 | mask |= MAY_EXEC; | |
1da177e4 LT |
963 | status = nfs_access_get_cached(inode, cred, &cache); |
964 | if (status == 0) | |
965 | goto out; | |
966 | ||
967 | /* Be clever: ask server to check for all possible rights */ | |
968 | cache.mask = MAY_EXEC | MAY_WRITE | MAY_READ; | |
969 | cache.cred = cred; | |
970 | cache.jiffies = jiffies; | |
971 | status = _nfs4_proc_access(inode, &cache); | |
972 | if (status != 0) | |
973 | return status; | |
974 | nfs_access_add_cache(inode, &cache); | |
975 | out: | |
976 | if ((cache.mask & mask) == mask) | |
977 | return 0; | |
978 | return -EACCES; | |
979 | } | |
980 | ||
10afec90 | 981 | static int nfs4_recover_expired_lease(struct nfs_server *server) |
58d9714a | 982 | { |
7539bbab | 983 | struct nfs_client *clp = server->nfs_client; |
6b30954e | 984 | int ret; |
58d9714a | 985 | |
6b30954e TM |
986 | for (;;) { |
987 | ret = nfs4_wait_clnt_recover(server->client, clp); | |
988 | if (ret != 0) | |
989 | return ret; | |
990 | if (!test_and_clear_bit(NFS4CLNT_LEASE_EXPIRED, &clp->cl_state)) | |
991 | break; | |
58d9714a | 992 | nfs4_schedule_state_recovery(clp); |
6b30954e TM |
993 | } |
994 | return 0; | |
58d9714a TM |
995 | } |
996 | ||
1da177e4 LT |
997 | /* |
998 | * OPEN_EXPIRED: | |
999 | * reclaim state on the server after a network partition. | |
1000 | * Assumes caller holds the appropriate lock | |
1001 | */ | |
539cd03a | 1002 | static int _nfs4_open_expired(struct nfs_open_context *ctx, struct nfs4_state *state) |
1da177e4 | 1003 | { |
e56e0b78 | 1004 | struct nfs4_opendata *opendata; |
864472e9 | 1005 | int ret; |
1da177e4 | 1006 | |
6f220ed5 TM |
1007 | opendata = nfs4_open_recoverdata_alloc(ctx, state); |
1008 | if (IS_ERR(opendata)) | |
1009 | return PTR_ERR(opendata); | |
864472e9 TM |
1010 | ret = nfs4_open_recover(opendata, state); |
1011 | if (ret == -ESTALE) { | |
1012 | /* Invalidate the state owner so we don't ever use it again */ | |
539cd03a TM |
1013 | nfs4_drop_state_owner(state->owner); |
1014 | d_drop(ctx->path.dentry); | |
1da177e4 | 1015 | } |
c6d00e63 | 1016 | nfs4_opendata_put(opendata); |
864472e9 | 1017 | return ret; |
1da177e4 LT |
1018 | } |
1019 | ||
539cd03a | 1020 | static inline int nfs4_do_open_expired(struct nfs_open_context *ctx, struct nfs4_state *state) |
202b50dc | 1021 | { |
539cd03a | 1022 | struct nfs_server *server = NFS_SERVER(state->inode); |
202b50dc TM |
1023 | struct nfs4_exception exception = { }; |
1024 | int err; | |
1025 | ||
1026 | do { | |
539cd03a | 1027 | err = _nfs4_open_expired(ctx, state); |
202b50dc TM |
1028 | if (err == -NFS4ERR_DELAY) |
1029 | nfs4_handle_exception(server, err, &exception); | |
1030 | } while (exception.retry); | |
1031 | return err; | |
1032 | } | |
1033 | ||
1da177e4 LT |
1034 | static int nfs4_open_expired(struct nfs4_state_owner *sp, struct nfs4_state *state) |
1035 | { | |
1da177e4 | 1036 | struct nfs_open_context *ctx; |
864472e9 | 1037 | int ret; |
1da177e4 | 1038 | |
864472e9 TM |
1039 | ctx = nfs4_state_find_open_context(state); |
1040 | if (IS_ERR(ctx)) | |
1041 | return PTR_ERR(ctx); | |
539cd03a | 1042 | ret = nfs4_do_open_expired(ctx, state); |
864472e9 TM |
1043 | put_nfs_open_context(ctx); |
1044 | return ret; | |
1da177e4 LT |
1045 | } |
1046 | ||
aa53ed54 JL |
1047 | /* |
1048 | * on an EXCLUSIVE create, the server should send back a bitmask with FATTR4-* | |
1049 | * fields corresponding to attributes that were used to store the verifier. | |
1050 | * Make sure we clobber those fields in the later setattr call | |
1051 | */ | |
1052 | static inline void nfs4_exclusive_attrset(struct nfs4_opendata *opendata, struct iattr *sattr) | |
1053 | { | |
1054 | if ((opendata->o_res.attrset[1] & FATTR4_WORD1_TIME_ACCESS) && | |
1055 | !(sattr->ia_valid & ATTR_ATIME_SET)) | |
1056 | sattr->ia_valid |= ATTR_ATIME; | |
1057 | ||
1058 | if ((opendata->o_res.attrset[1] & FATTR4_WORD1_TIME_MODIFY) && | |
1059 | !(sattr->ia_valid & ATTR_MTIME_SET)) | |
1060 | sattr->ia_valid |= ATTR_MTIME; | |
1061 | } | |
1062 | ||
1da177e4 | 1063 | /* |
24ac23ab | 1064 | * Returns a referenced nfs4_state |
1da177e4 | 1065 | */ |
ad389da7 | 1066 | 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 |
1067 | { |
1068 | struct nfs4_state_owner *sp; | |
1069 | struct nfs4_state *state = NULL; | |
1070 | struct nfs_server *server = NFS_SERVER(dir); | |
7539bbab | 1071 | struct nfs_client *clp = server->nfs_client; |
e56e0b78 | 1072 | struct nfs4_opendata *opendata; |
aac00a8d | 1073 | int status; |
1da177e4 LT |
1074 | |
1075 | /* Protect against reboot recovery conflicts */ | |
1da177e4 LT |
1076 | status = -ENOMEM; |
1077 | if (!(sp = nfs4_get_state_owner(server, cred))) { | |
1078 | dprintk("nfs4_do_open: nfs4_get_state_owner failed!\n"); | |
1079 | goto out_err; | |
1080 | } | |
58d9714a TM |
1081 | status = nfs4_recover_expired_lease(server); |
1082 | if (status != 0) | |
b4454fe1 | 1083 | goto err_put_state_owner; |
aac00a8d TM |
1084 | if (path->dentry->d_inode != NULL) |
1085 | nfs4_return_incompatible_delegation(path->dentry->d_inode, flags & (FMODE_READ|FMODE_WRITE)); | |
58d9714a TM |
1086 | down_read(&clp->cl_sem); |
1087 | status = -ENOMEM; | |
ad389da7 | 1088 | opendata = nfs4_opendata_alloc(path, sp, flags, sattr); |
e56e0b78 | 1089 | if (opendata == NULL) |
76723de0 | 1090 | goto err_release_rwsem; |
1da177e4 | 1091 | |
aac00a8d TM |
1092 | if (path->dentry->d_inode != NULL) |
1093 | opendata->state = nfs4_get_open_state(path->dentry->d_inode, sp); | |
1094 | ||
24ac23ab | 1095 | status = _nfs4_proc_open(opendata); |
1da177e4 | 1096 | if (status != 0) |
c6d00e63 | 1097 | goto err_opendata_put; |
1da177e4 | 1098 | |
aa53ed54 JL |
1099 | if (opendata->o_arg.open_flags & O_EXCL) |
1100 | nfs4_exclusive_attrset(opendata, sattr); | |
1101 | ||
24ac23ab | 1102 | state = nfs4_opendata_to_nfs4_state(opendata); |
1b370bc2 TM |
1103 | status = PTR_ERR(state); |
1104 | if (IS_ERR(state)) | |
c6d00e63 | 1105 | goto err_opendata_put; |
c6d00e63 | 1106 | nfs4_opendata_put(opendata); |
1da177e4 LT |
1107 | nfs4_put_state_owner(sp); |
1108 | up_read(&clp->cl_sem); | |
1109 | *res = state; | |
1110 | return 0; | |
c6d00e63 TM |
1111 | err_opendata_put: |
1112 | nfs4_opendata_put(opendata); | |
76723de0 TM |
1113 | err_release_rwsem: |
1114 | up_read(&clp->cl_sem); | |
e56e0b78 TM |
1115 | err_put_state_owner: |
1116 | nfs4_put_state_owner(sp); | |
1da177e4 | 1117 | out_err: |
1da177e4 LT |
1118 | *res = NULL; |
1119 | return status; | |
1120 | } | |
1121 | ||
1122 | ||
ad389da7 | 1123 | static struct nfs4_state *nfs4_do_open(struct inode *dir, struct path *path, int flags, struct iattr *sattr, struct rpc_cred *cred) |
1da177e4 LT |
1124 | { |
1125 | struct nfs4_exception exception = { }; | |
1126 | struct nfs4_state *res; | |
1127 | int status; | |
1128 | ||
1129 | do { | |
ad389da7 | 1130 | status = _nfs4_do_open(dir, path, flags, sattr, cred, &res); |
1da177e4 LT |
1131 | if (status == 0) |
1132 | break; | |
1133 | /* NOTE: BAD_SEQID means the server and client disagree about the | |
1134 | * book-keeping w.r.t. state-changing operations | |
1135 | * (OPEN/CLOSE/LOCK/LOCKU...) | |
1136 | * It is actually a sign of a bug on the client or on the server. | |
1137 | * | |
1138 | * If we receive a BAD_SEQID error in the particular case of | |
cee54fc9 | 1139 | * doing an OPEN, we assume that nfs_increment_open_seqid() will |
1da177e4 LT |
1140 | * have unhashed the old state_owner for us, and that we can |
1141 | * therefore safely retry using a new one. We should still warn | |
1142 | * the user though... | |
1143 | */ | |
1144 | if (status == -NFS4ERR_BAD_SEQID) { | |
6f43ddcc TM |
1145 | printk(KERN_WARNING "NFS: v4 server %s " |
1146 | " returned a bad sequence-id error!\n", | |
1147 | NFS_SERVER(dir)->nfs_client->cl_hostname); | |
1da177e4 LT |
1148 | exception.retry = 1; |
1149 | continue; | |
1150 | } | |
550f5747 TM |
1151 | /* |
1152 | * BAD_STATEID on OPEN means that the server cancelled our | |
1153 | * state before it received the OPEN_CONFIRM. | |
1154 | * Recover by retrying the request as per the discussion | |
1155 | * on Page 181 of RFC3530. | |
1156 | */ | |
1157 | if (status == -NFS4ERR_BAD_STATEID) { | |
1158 | exception.retry = 1; | |
1159 | continue; | |
1160 | } | |
aac00a8d TM |
1161 | if (status == -EAGAIN) { |
1162 | /* We must have found a delegation */ | |
1163 | exception.retry = 1; | |
1164 | continue; | |
1165 | } | |
1da177e4 LT |
1166 | res = ERR_PTR(nfs4_handle_exception(NFS_SERVER(dir), |
1167 | status, &exception)); | |
1168 | } while (exception.retry); | |
1169 | return res; | |
1170 | } | |
1171 | ||
3e4f6290 TM |
1172 | static int _nfs4_do_setattr(struct inode *inode, struct nfs_fattr *fattr, |
1173 | struct iattr *sattr, struct nfs4_state *state) | |
1da177e4 | 1174 | { |
3e4f6290 | 1175 | struct nfs_server *server = NFS_SERVER(inode); |
1da177e4 | 1176 | struct nfs_setattrargs arg = { |
3e4f6290 | 1177 | .fh = NFS_FH(inode), |
1da177e4 LT |
1178 | .iap = sattr, |
1179 | .server = server, | |
1180 | .bitmask = server->attr_bitmask, | |
1181 | }; | |
1182 | struct nfs_setattrres res = { | |
1183 | .fattr = fattr, | |
1184 | .server = server, | |
1185 | }; | |
1186 | struct rpc_message msg = { | |
1187 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SETATTR], | |
1188 | .rpc_argp = &arg, | |
1189 | .rpc_resp = &res, | |
1190 | }; | |
26e976a8 | 1191 | unsigned long timestamp = jiffies; |
65e4308d | 1192 | int status; |
1da177e4 | 1193 | |
0e574af1 | 1194 | nfs_fattr_init(fattr); |
1da177e4 | 1195 | |
3e4f6290 TM |
1196 | if (nfs4_copy_delegation_stateid(&arg.stateid, inode)) { |
1197 | /* Use that stateid */ | |
1198 | } else if (state != NULL) { | |
1da177e4 | 1199 | msg.rpc_cred = state->owner->so_cred; |
08e9eac4 TM |
1200 | nfs4_copy_stateid(&arg.stateid, state, current->files); |
1201 | } else | |
1da177e4 LT |
1202 | memcpy(&arg.stateid, &zero_stateid, sizeof(arg.stateid)); |
1203 | ||
65e4308d | 1204 | status = rpc_call_sync(server->client, &msg, 0); |
26e976a8 TM |
1205 | if (status == 0 && state != NULL) |
1206 | renew_lease(server, timestamp); | |
65e4308d | 1207 | return status; |
1da177e4 LT |
1208 | } |
1209 | ||
3e4f6290 TM |
1210 | static int nfs4_do_setattr(struct inode *inode, struct nfs_fattr *fattr, |
1211 | struct iattr *sattr, struct nfs4_state *state) | |
1da177e4 | 1212 | { |
3e4f6290 | 1213 | struct nfs_server *server = NFS_SERVER(inode); |
1da177e4 LT |
1214 | struct nfs4_exception exception = { }; |
1215 | int err; | |
1216 | do { | |
1217 | err = nfs4_handle_exception(server, | |
3e4f6290 | 1218 | _nfs4_do_setattr(inode, fattr, sattr, state), |
1da177e4 LT |
1219 | &exception); |
1220 | } while (exception.retry); | |
1221 | return err; | |
1222 | } | |
1223 | ||
1224 | struct nfs4_closedata { | |
4a35bd41 | 1225 | struct path path; |
1da177e4 LT |
1226 | struct inode *inode; |
1227 | struct nfs4_state *state; | |
1228 | struct nfs_closeargs arg; | |
1229 | struct nfs_closeres res; | |
516a6af6 | 1230 | struct nfs_fattr fattr; |
26e976a8 | 1231 | unsigned long timestamp; |
1da177e4 LT |
1232 | }; |
1233 | ||
963d8fe5 | 1234 | static void nfs4_free_closedata(void *data) |
9512135d | 1235 | { |
963d8fe5 TM |
1236 | struct nfs4_closedata *calldata = data; |
1237 | struct nfs4_state_owner *sp = calldata->state->owner; | |
9512135d TM |
1238 | |
1239 | nfs4_put_open_state(calldata->state); | |
1240 | nfs_free_seqid(calldata->arg.seqid); | |
9512135d | 1241 | nfs4_put_state_owner(sp); |
4a35bd41 TM |
1242 | dput(calldata->path.dentry); |
1243 | mntput(calldata->path.mnt); | |
9512135d TM |
1244 | kfree(calldata); |
1245 | } | |
1246 | ||
963d8fe5 | 1247 | static void nfs4_close_done(struct rpc_task *task, void *data) |
1da177e4 | 1248 | { |
963d8fe5 | 1249 | struct nfs4_closedata *calldata = data; |
1da177e4 | 1250 | struct nfs4_state *state = calldata->state; |
1da177e4 LT |
1251 | struct nfs_server *server = NFS_SERVER(calldata->inode); |
1252 | ||
4ce70ada TM |
1253 | if (RPC_ASSASSINATED(task)) |
1254 | return; | |
1da177e4 LT |
1255 | /* hmm. we are done with the inode, and in the process of freeing |
1256 | * the state_owner. we keep this around to process errors | |
1257 | */ | |
cee54fc9 | 1258 | nfs_increment_open_seqid(task->tk_status, calldata->arg.seqid); |
1da177e4 LT |
1259 | switch (task->tk_status) { |
1260 | case 0: | |
45328c35 | 1261 | nfs_set_open_stateid(state, &calldata->res.stateid, 0); |
26e976a8 | 1262 | renew_lease(server, calldata->timestamp); |
1da177e4 LT |
1263 | break; |
1264 | case -NFS4ERR_STALE_STATEID: | |
1265 | case -NFS4ERR_EXPIRED: | |
1da177e4 LT |
1266 | break; |
1267 | default: | |
1268 | if (nfs4_async_handle_error(task, server) == -EAGAIN) { | |
1269 | rpc_restart_call(task); | |
1270 | return; | |
1271 | } | |
1272 | } | |
516a6af6 | 1273 | nfs_refresh_inode(calldata->inode, calldata->res.fattr); |
1da177e4 LT |
1274 | } |
1275 | ||
4ce70ada | 1276 | static void nfs4_close_prepare(struct rpc_task *task, void *data) |
1da177e4 | 1277 | { |
4ce70ada | 1278 | struct nfs4_closedata *calldata = data; |
9512135d | 1279 | struct nfs4_state *state = calldata->state; |
1da177e4 LT |
1280 | struct rpc_message msg = { |
1281 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_CLOSE], | |
1282 | .rpc_argp = &calldata->arg, | |
1283 | .rpc_resp = &calldata->res, | |
9512135d | 1284 | .rpc_cred = state->owner->so_cred, |
1da177e4 | 1285 | }; |
003707c7 | 1286 | int clear_rd, clear_wr, clear_rdwr; |
9512135d | 1287 | |
963d8fe5 | 1288 | if (nfs_wait_on_sequence(calldata->arg.seqid, task) != 0) |
9512135d | 1289 | return; |
003707c7 | 1290 | |
003707c7 | 1291 | clear_rd = clear_wr = clear_rdwr = 0; |
4cecb76f | 1292 | spin_lock(&state->owner->so_lock); |
003707c7 | 1293 | /* Calculate the change in open mode */ |
e7616923 | 1294 | if (state->n_rdwr == 0) { |
003707c7 | 1295 | if (state->n_rdonly == 0) { |
003707c7 TM |
1296 | clear_rd |= test_and_clear_bit(NFS_O_RDONLY_STATE, &state->flags); |
1297 | clear_rdwr |= test_and_clear_bit(NFS_O_RDWR_STATE, &state->flags); | |
1298 | } | |
1299 | if (state->n_wronly == 0) { | |
003707c7 TM |
1300 | clear_wr |= test_and_clear_bit(NFS_O_WRONLY_STATE, &state->flags); |
1301 | clear_rdwr |= test_and_clear_bit(NFS_O_RDWR_STATE, &state->flags); | |
1302 | } | |
e7616923 | 1303 | } |
4cecb76f | 1304 | spin_unlock(&state->owner->so_lock); |
003707c7 | 1305 | if (!clear_rd && !clear_wr && !clear_rdwr) { |
963d8fe5 TM |
1306 | /* Note: exit _without_ calling nfs4_close_done */ |
1307 | task->tk_action = NULL; | |
9512135d TM |
1308 | return; |
1309 | } | |
516a6af6 | 1310 | nfs_fattr_init(calldata->res.fattr); |
45328c35 | 1311 | if (test_bit(NFS_O_RDONLY_STATE, &state->flags) != 0) { |
1da177e4 | 1312 | msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN_DOWNGRADE]; |
45328c35 TM |
1313 | calldata->arg.open_flags = FMODE_READ; |
1314 | } else if (test_bit(NFS_O_WRONLY_STATE, &state->flags) != 0) { | |
1315 | msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN_DOWNGRADE]; | |
1316 | calldata->arg.open_flags = FMODE_WRITE; | |
1317 | } | |
26e976a8 | 1318 | calldata->timestamp = jiffies; |
9512135d | 1319 | rpc_call_setup(task, &msg, 0); |
1da177e4 LT |
1320 | } |
1321 | ||
963d8fe5 | 1322 | static const struct rpc_call_ops nfs4_close_ops = { |
4ce70ada | 1323 | .rpc_call_prepare = nfs4_close_prepare, |
963d8fe5 TM |
1324 | .rpc_call_done = nfs4_close_done, |
1325 | .rpc_release = nfs4_free_closedata, | |
1326 | }; | |
1327 | ||
1da177e4 LT |
1328 | /* |
1329 | * It is possible for data to be read/written from a mem-mapped file | |
1330 | * after the sys_close call (which hits the vfs layer as a flush). | |
1331 | * This means that we can't safely call nfsv4 close on a file until | |
1332 | * the inode is cleared. This in turn means that we are not good | |
1333 | * NFSv4 citizens - we do not indicate to the server to update the file's | |
1334 | * share state even when we are done with one of the three share | |
1335 | * stateid's in the inode. | |
1336 | * | |
1337 | * NOTE: Caller must be holding the sp->so_owner semaphore! | |
1338 | */ | |
4a35bd41 | 1339 | int nfs4_do_close(struct path *path, struct nfs4_state *state) |
1da177e4 | 1340 | { |
4a35bd41 | 1341 | struct nfs_server *server = NFS_SERVER(state->inode); |
1da177e4 | 1342 | struct nfs4_closedata *calldata; |
b39e625b TM |
1343 | struct nfs4_state_owner *sp = state->owner; |
1344 | struct rpc_task *task; | |
9512135d | 1345 | int status = -ENOMEM; |
1da177e4 | 1346 | |
9512135d | 1347 | calldata = kmalloc(sizeof(*calldata), GFP_KERNEL); |
1da177e4 | 1348 | if (calldata == NULL) |
9512135d | 1349 | goto out; |
4a35bd41 | 1350 | calldata->inode = state->inode; |
1da177e4 | 1351 | calldata->state = state; |
4a35bd41 | 1352 | calldata->arg.fh = NFS_FH(state->inode); |
003707c7 | 1353 | calldata->arg.stateid = &state->open_stateid; |
1da177e4 | 1354 | /* Serialization for the sequence id */ |
cee54fc9 | 1355 | calldata->arg.seqid = nfs_alloc_seqid(&state->owner->so_seqid); |
9512135d TM |
1356 | if (calldata->arg.seqid == NULL) |
1357 | goto out_free_calldata; | |
516a6af6 TM |
1358 | calldata->arg.bitmask = server->attr_bitmask; |
1359 | calldata->res.fattr = &calldata->fattr; | |
1360 | calldata->res.server = server; | |
4a35bd41 TM |
1361 | calldata->path.mnt = mntget(path->mnt); |
1362 | calldata->path.dentry = dget(path->dentry); | |
9512135d | 1363 | |
b39e625b TM |
1364 | task = rpc_run_task(server->client, RPC_TASK_ASYNC, &nfs4_close_ops, calldata); |
1365 | if (IS_ERR(task)) | |
1366 | return PTR_ERR(task); | |
1367 | rpc_put_task(task); | |
1368 | return 0; | |
9512135d TM |
1369 | out_free_calldata: |
1370 | kfree(calldata); | |
1371 | out: | |
b39e625b TM |
1372 | nfs4_put_open_state(state); |
1373 | nfs4_put_state_owner(sp); | |
9512135d | 1374 | return status; |
1da177e4 LT |
1375 | } |
1376 | ||
4a35bd41 | 1377 | static int nfs4_intent_set_file(struct nameidata *nd, struct path *path, struct nfs4_state *state) |
02a913a7 TM |
1378 | { |
1379 | struct file *filp; | |
1b45c46c | 1380 | int ret; |
02a913a7 | 1381 | |
1b45c46c TM |
1382 | /* If the open_intent is for execute, we have an extra check to make */ |
1383 | if (nd->intent.open.flags & FMODE_EXEC) { | |
1384 | ret = _nfs4_do_access(state->inode, | |
1385 | state->owner->so_cred, | |
1386 | nd->intent.open.flags); | |
1387 | if (ret < 0) | |
1388 | goto out_close; | |
1389 | } | |
4a35bd41 | 1390 | filp = lookup_instantiate_filp(nd, path->dentry, NULL); |
02a913a7 TM |
1391 | if (!IS_ERR(filp)) { |
1392 | struct nfs_open_context *ctx; | |
1393 | ctx = (struct nfs_open_context *)filp->private_data; | |
1394 | ctx->state = state; | |
95cf959b TM |
1395 | return 0; |
1396 | } | |
1b45c46c TM |
1397 | ret = PTR_ERR(filp); |
1398 | out_close: | |
4a35bd41 | 1399 | nfs4_close_state(path, state, nd->intent.open.flags); |
1b45c46c | 1400 | return ret; |
02a913a7 TM |
1401 | } |
1402 | ||
1403 | struct dentry * | |
1da177e4 LT |
1404 | nfs4_atomic_open(struct inode *dir, struct dentry *dentry, struct nameidata *nd) |
1405 | { | |
ad389da7 TM |
1406 | struct path path = { |
1407 | .mnt = nd->mnt, | |
1408 | .dentry = dentry, | |
1409 | }; | |
1da177e4 LT |
1410 | struct iattr attr; |
1411 | struct rpc_cred *cred; | |
1412 | struct nfs4_state *state; | |
02a913a7 | 1413 | struct dentry *res; |
1da177e4 LT |
1414 | |
1415 | if (nd->flags & LOOKUP_CREATE) { | |
1416 | attr.ia_mode = nd->intent.open.create_mode; | |
1417 | attr.ia_valid = ATTR_MODE; | |
1418 | if (!IS_POSIXACL(dir)) | |
1419 | attr.ia_mode &= ~current->fs->umask; | |
1420 | } else { | |
1421 | attr.ia_valid = 0; | |
1422 | BUG_ON(nd->intent.open.flags & O_CREAT); | |
1423 | } | |
1424 | ||
1f163415 | 1425 | cred = rpcauth_lookupcred(NFS_CLIENT(dir)->cl_auth, 0); |
1da177e4 | 1426 | if (IS_ERR(cred)) |
02a913a7 | 1427 | return (struct dentry *)cred; |
ad389da7 | 1428 | state = nfs4_do_open(dir, &path, nd->intent.open.flags, &attr, cred); |
1da177e4 | 1429 | put_rpccred(cred); |
02a913a7 TM |
1430 | if (IS_ERR(state)) { |
1431 | if (PTR_ERR(state) == -ENOENT) | |
1432 | d_add(dentry, NULL); | |
1433 | return (struct dentry *)state; | |
1434 | } | |
24ac23ab | 1435 | res = d_add_unique(dentry, igrab(state->inode)); |
02a913a7 | 1436 | if (res != NULL) |
deee9369 | 1437 | path.dentry = res; |
4a35bd41 | 1438 | nfs4_intent_set_file(nd, &path, state); |
02a913a7 | 1439 | return res; |
1da177e4 LT |
1440 | } |
1441 | ||
1442 | int | |
02a913a7 | 1443 | nfs4_open_revalidate(struct inode *dir, struct dentry *dentry, int openflags, struct nameidata *nd) |
1da177e4 | 1444 | { |
ad389da7 TM |
1445 | struct path path = { |
1446 | .mnt = nd->mnt, | |
1447 | .dentry = dentry, | |
1448 | }; | |
1da177e4 LT |
1449 | struct rpc_cred *cred; |
1450 | struct nfs4_state *state; | |
1da177e4 | 1451 | |
1f163415 | 1452 | cred = rpcauth_lookupcred(NFS_CLIENT(dir)->cl_auth, 0); |
1da177e4 LT |
1453 | if (IS_ERR(cred)) |
1454 | return PTR_ERR(cred); | |
aac00a8d | 1455 | state = nfs4_do_open(dir, &path, openflags, NULL, cred); |
1da177e4 | 1456 | put_rpccred(cred); |
02a913a7 TM |
1457 | if (IS_ERR(state)) { |
1458 | switch (PTR_ERR(state)) { | |
1459 | case -EPERM: | |
1460 | case -EACCES: | |
1461 | case -EDQUOT: | |
1462 | case -ENOSPC: | |
1463 | case -EROFS: | |
1464 | lookup_instantiate_filp(nd, (struct dentry *)state, NULL); | |
1465 | return 1; | |
b87c0adf CL |
1466 | default: |
1467 | goto out_drop; | |
02a913a7 | 1468 | } |
02a913a7 | 1469 | } |
24ac23ab | 1470 | if (state->inode == dentry->d_inode) { |
4a35bd41 | 1471 | nfs4_intent_set_file(nd, &path, state); |
1da177e4 LT |
1472 | return 1; |
1473 | } | |
4a35bd41 | 1474 | nfs4_close_state(&path, state, openflags); |
02a913a7 TM |
1475 | out_drop: |
1476 | d_drop(dentry); | |
1da177e4 LT |
1477 | return 0; |
1478 | } | |
1479 | ||
1480 | ||
1481 | static int _nfs4_server_capabilities(struct nfs_server *server, struct nfs_fh *fhandle) | |
1482 | { | |
1483 | struct nfs4_server_caps_res res = {}; | |
1484 | struct rpc_message msg = { | |
1485 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SERVER_CAPS], | |
1486 | .rpc_argp = fhandle, | |
1487 | .rpc_resp = &res, | |
1488 | }; | |
1489 | int status; | |
1490 | ||
1491 | status = rpc_call_sync(server->client, &msg, 0); | |
1492 | if (status == 0) { | |
1493 | memcpy(server->attr_bitmask, res.attr_bitmask, sizeof(server->attr_bitmask)); | |
1494 | if (res.attr_bitmask[0] & FATTR4_WORD0_ACL) | |
1495 | server->caps |= NFS_CAP_ACLS; | |
1496 | if (res.has_links != 0) | |
1497 | server->caps |= NFS_CAP_HARDLINKS; | |
1498 | if (res.has_symlinks != 0) | |
1499 | server->caps |= NFS_CAP_SYMLINKS; | |
1500 | server->acl_bitmask = res.acl_bitmask; | |
1501 | } | |
1502 | return status; | |
1503 | } | |
1504 | ||
55a97593 | 1505 | int nfs4_server_capabilities(struct nfs_server *server, struct nfs_fh *fhandle) |
1da177e4 LT |
1506 | { |
1507 | struct nfs4_exception exception = { }; | |
1508 | int err; | |
1509 | do { | |
1510 | err = nfs4_handle_exception(server, | |
1511 | _nfs4_server_capabilities(server, fhandle), | |
1512 | &exception); | |
1513 | } while (exception.retry); | |
1514 | return err; | |
1515 | } | |
1516 | ||
1517 | static int _nfs4_lookup_root(struct nfs_server *server, struct nfs_fh *fhandle, | |
1518 | struct nfs_fsinfo *info) | |
1519 | { | |
1da177e4 LT |
1520 | struct nfs4_lookup_root_arg args = { |
1521 | .bitmask = nfs4_fattr_bitmap, | |
1522 | }; | |
1523 | struct nfs4_lookup_res res = { | |
1524 | .server = server, | |
0e574af1 | 1525 | .fattr = info->fattr, |
1da177e4 LT |
1526 | .fh = fhandle, |
1527 | }; | |
1528 | struct rpc_message msg = { | |
1529 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOOKUP_ROOT], | |
1530 | .rpc_argp = &args, | |
1531 | .rpc_resp = &res, | |
1532 | }; | |
0e574af1 | 1533 | nfs_fattr_init(info->fattr); |
1da177e4 LT |
1534 | return rpc_call_sync(server->client, &msg, 0); |
1535 | } | |
1536 | ||
1537 | static int nfs4_lookup_root(struct nfs_server *server, struct nfs_fh *fhandle, | |
1538 | struct nfs_fsinfo *info) | |
1539 | { | |
1540 | struct nfs4_exception exception = { }; | |
1541 | int err; | |
1542 | do { | |
1543 | err = nfs4_handle_exception(server, | |
1544 | _nfs4_lookup_root(server, fhandle, info), | |
1545 | &exception); | |
1546 | } while (exception.retry); | |
1547 | return err; | |
1548 | } | |
1549 | ||
54ceac45 DH |
1550 | /* |
1551 | * get the file handle for the "/" directory on the server | |
1552 | */ | |
1da177e4 | 1553 | static int nfs4_proc_get_root(struct nfs_server *server, struct nfs_fh *fhandle, |
54ceac45 | 1554 | struct nfs_fsinfo *info) |
1da177e4 | 1555 | { |
1da177e4 LT |
1556 | int status; |
1557 | ||
1da177e4 | 1558 | status = nfs4_lookup_root(server, fhandle, info); |
1da177e4 LT |
1559 | if (status == 0) |
1560 | status = nfs4_server_capabilities(server, fhandle); | |
1561 | if (status == 0) | |
1562 | status = nfs4_do_fsinfo(server, fhandle, info); | |
c12e87f4 | 1563 | return nfs4_map_errors(status); |
1da177e4 LT |
1564 | } |
1565 | ||
6b97fd3d MN |
1566 | /* |
1567 | * Get locations and (maybe) other attributes of a referral. | |
1568 | * Note that we'll actually follow the referral later when | |
1569 | * we detect fsid mismatch in inode revalidation | |
1570 | */ | |
56659e99 | 1571 | static int nfs4_get_referral(struct inode *dir, const struct qstr *name, struct nfs_fattr *fattr, struct nfs_fh *fhandle) |
6b97fd3d MN |
1572 | { |
1573 | int status = -ENOMEM; | |
1574 | struct page *page = NULL; | |
1575 | struct nfs4_fs_locations *locations = NULL; | |
6b97fd3d MN |
1576 | |
1577 | page = alloc_page(GFP_KERNEL); | |
1578 | if (page == NULL) | |
1579 | goto out; | |
1580 | locations = kmalloc(sizeof(struct nfs4_fs_locations), GFP_KERNEL); | |
1581 | if (locations == NULL) | |
1582 | goto out; | |
1583 | ||
c228fd3a | 1584 | status = nfs4_proc_fs_locations(dir, name, locations, page); |
6b97fd3d MN |
1585 | if (status != 0) |
1586 | goto out; | |
1587 | /* Make sure server returned a different fsid for the referral */ | |
1588 | if (nfs_fsid_equal(&NFS_SERVER(dir)->fsid, &locations->fattr.fsid)) { | |
1589 | dprintk("%s: server did not return a different fsid for a referral at %s\n", __FUNCTION__, name->name); | |
1590 | status = -EIO; | |
1591 | goto out; | |
1592 | } | |
1593 | ||
1594 | memcpy(fattr, &locations->fattr, sizeof(struct nfs_fattr)); | |
1595 | fattr->valid |= NFS_ATTR_FATTR_V4_REFERRAL; | |
1596 | if (!fattr->mode) | |
1597 | fattr->mode = S_IFDIR; | |
1598 | memset(fhandle, 0, sizeof(struct nfs_fh)); | |
1599 | out: | |
1600 | if (page) | |
1601 | __free_page(page); | |
1602 | if (locations) | |
1603 | kfree(locations); | |
1604 | return status; | |
1605 | } | |
1606 | ||
1da177e4 LT |
1607 | static int _nfs4_proc_getattr(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fattr *fattr) |
1608 | { | |
1609 | struct nfs4_getattr_arg args = { | |
1610 | .fh = fhandle, | |
1611 | .bitmask = server->attr_bitmask, | |
1612 | }; | |
1613 | struct nfs4_getattr_res res = { | |
1614 | .fattr = fattr, | |
1615 | .server = server, | |
1616 | }; | |
1617 | struct rpc_message msg = { | |
1618 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GETATTR], | |
1619 | .rpc_argp = &args, | |
1620 | .rpc_resp = &res, | |
1621 | }; | |
1622 | ||
0e574af1 | 1623 | nfs_fattr_init(fattr); |
1da177e4 LT |
1624 | return rpc_call_sync(server->client, &msg, 0); |
1625 | } | |
1626 | ||
1627 | static int nfs4_proc_getattr(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fattr *fattr) | |
1628 | { | |
1629 | struct nfs4_exception exception = { }; | |
1630 | int err; | |
1631 | do { | |
1632 | err = nfs4_handle_exception(server, | |
1633 | _nfs4_proc_getattr(server, fhandle, fattr), | |
1634 | &exception); | |
1635 | } while (exception.retry); | |
1636 | return err; | |
1637 | } | |
1638 | ||
1639 | /* | |
1640 | * The file is not closed if it is opened due to the a request to change | |
1641 | * the size of the file. The open call will not be needed once the | |
1642 | * VFS layer lookup-intents are implemented. | |
1643 | * | |
1644 | * Close is called when the inode is destroyed. | |
1645 | * If we haven't opened the file for O_WRONLY, we | |
1646 | * need to in the size_change case to obtain a stateid. | |
1647 | * | |
1648 | * Got race? | |
1649 | * Because OPEN is always done by name in nfsv4, it is | |
1650 | * possible that we opened a different file by the same | |
1651 | * name. We can recognize this race condition, but we | |
1652 | * can't do anything about it besides returning an error. | |
1653 | * | |
1654 | * This will be fixed with VFS changes (lookup-intent). | |
1655 | */ | |
1656 | static int | |
1657 | nfs4_proc_setattr(struct dentry *dentry, struct nfs_fattr *fattr, | |
1658 | struct iattr *sattr) | |
1659 | { | |
08e9eac4 TM |
1660 | struct rpc_cred *cred; |
1661 | struct inode *inode = dentry->d_inode; | |
d530838b TM |
1662 | struct nfs_open_context *ctx; |
1663 | struct nfs4_state *state = NULL; | |
1da177e4 LT |
1664 | int status; |
1665 | ||
0e574af1 | 1666 | nfs_fattr_init(fattr); |
1da177e4 | 1667 | |
1f163415 | 1668 | cred = rpcauth_lookupcred(NFS_CLIENT(inode)->cl_auth, 0); |
08e9eac4 TM |
1669 | if (IS_ERR(cred)) |
1670 | return PTR_ERR(cred); | |
d530838b TM |
1671 | |
1672 | /* Search for an existing open(O_WRITE) file */ | |
1673 | ctx = nfs_find_open_context(inode, cred, FMODE_WRITE); | |
1674 | if (ctx != NULL) | |
1675 | state = ctx->state; | |
08e9eac4 | 1676 | |
3e4f6290 | 1677 | status = nfs4_do_setattr(inode, fattr, sattr, state); |
65e4308d TM |
1678 | if (status == 0) |
1679 | nfs_setattr_update_inode(inode, sattr); | |
d530838b TM |
1680 | if (ctx != NULL) |
1681 | put_nfs_open_context(ctx); | |
08e9eac4 | 1682 | put_rpccred(cred); |
1da177e4 LT |
1683 | return status; |
1684 | } | |
1685 | ||
56659e99 TM |
1686 | static int _nfs4_proc_lookupfh(struct nfs_server *server, const struct nfs_fh *dirfh, |
1687 | const struct qstr *name, struct nfs_fh *fhandle, | |
2b3de441 DH |
1688 | struct nfs_fattr *fattr) |
1689 | { | |
1690 | int status; | |
1691 | struct nfs4_lookup_arg args = { | |
1692 | .bitmask = server->attr_bitmask, | |
1693 | .dir_fh = dirfh, | |
1694 | .name = name, | |
1695 | }; | |
1696 | struct nfs4_lookup_res res = { | |
1697 | .server = server, | |
1698 | .fattr = fattr, | |
1699 | .fh = fhandle, | |
1700 | }; | |
1701 | struct rpc_message msg = { | |
1702 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOOKUP], | |
1703 | .rpc_argp = &args, | |
1704 | .rpc_resp = &res, | |
1705 | }; | |
1706 | ||
1707 | nfs_fattr_init(fattr); | |
1708 | ||
1709 | dprintk("NFS call lookupfh %s\n", name->name); | |
1710 | status = rpc_call_sync(server->client, &msg, 0); | |
1711 | dprintk("NFS reply lookupfh: %d\n", status); | |
2b3de441 DH |
1712 | return status; |
1713 | } | |
1714 | ||
1715 | static int nfs4_proc_lookupfh(struct nfs_server *server, struct nfs_fh *dirfh, | |
1716 | struct qstr *name, struct nfs_fh *fhandle, | |
1717 | struct nfs_fattr *fattr) | |
1718 | { | |
1719 | struct nfs4_exception exception = { }; | |
1720 | int err; | |
1721 | do { | |
4e56e082 TM |
1722 | err = _nfs4_proc_lookupfh(server, dirfh, name, fhandle, fattr); |
1723 | /* FIXME: !!!! */ | |
1724 | if (err == -NFS4ERR_MOVED) { | |
1725 | err = -EREMOTE; | |
1726 | break; | |
1727 | } | |
1728 | err = nfs4_handle_exception(server, err, &exception); | |
2b3de441 DH |
1729 | } while (exception.retry); |
1730 | return err; | |
1731 | } | |
1732 | ||
56659e99 | 1733 | static int _nfs4_proc_lookup(struct inode *dir, const struct qstr *name, |
1da177e4 LT |
1734 | struct nfs_fh *fhandle, struct nfs_fattr *fattr) |
1735 | { | |
4e56e082 | 1736 | int status; |
1da177e4 LT |
1737 | |
1738 | dprintk("NFS call lookup %s\n", name->name); | |
4e56e082 | 1739 | status = _nfs4_proc_lookupfh(NFS_SERVER(dir), NFS_FH(dir), name, fhandle, fattr); |
6b97fd3d MN |
1740 | if (status == -NFS4ERR_MOVED) |
1741 | status = nfs4_get_referral(dir, name, fattr, fhandle); | |
1da177e4 LT |
1742 | dprintk("NFS reply lookup: %d\n", status); |
1743 | return status; | |
1744 | } | |
1745 | ||
1746 | static int nfs4_proc_lookup(struct inode *dir, struct qstr *name, struct nfs_fh *fhandle, struct nfs_fattr *fattr) | |
1747 | { | |
1748 | struct nfs4_exception exception = { }; | |
1749 | int err; | |
1750 | do { | |
1751 | err = nfs4_handle_exception(NFS_SERVER(dir), | |
1752 | _nfs4_proc_lookup(dir, name, fhandle, fattr), | |
1753 | &exception); | |
1754 | } while (exception.retry); | |
1755 | return err; | |
1756 | } | |
1757 | ||
1758 | static int _nfs4_proc_access(struct inode *inode, struct nfs_access_entry *entry) | |
1759 | { | |
1760 | struct nfs4_accessargs args = { | |
1761 | .fh = NFS_FH(inode), | |
1762 | }; | |
1763 | struct nfs4_accessres res = { 0 }; | |
1764 | struct rpc_message msg = { | |
1765 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_ACCESS], | |
1766 | .rpc_argp = &args, | |
1767 | .rpc_resp = &res, | |
1768 | .rpc_cred = entry->cred, | |
1769 | }; | |
1770 | int mode = entry->mask; | |
1771 | int status; | |
1772 | ||
1773 | /* | |
1774 | * Determine which access bits we want to ask for... | |
1775 | */ | |
1776 | if (mode & MAY_READ) | |
1777 | args.access |= NFS4_ACCESS_READ; | |
1778 | if (S_ISDIR(inode->i_mode)) { | |
1779 | if (mode & MAY_WRITE) | |
1780 | args.access |= NFS4_ACCESS_MODIFY | NFS4_ACCESS_EXTEND | NFS4_ACCESS_DELETE; | |
1781 | if (mode & MAY_EXEC) | |
1782 | args.access |= NFS4_ACCESS_LOOKUP; | |
1783 | } else { | |
1784 | if (mode & MAY_WRITE) | |
1785 | args.access |= NFS4_ACCESS_MODIFY | NFS4_ACCESS_EXTEND; | |
1786 | if (mode & MAY_EXEC) | |
1787 | args.access |= NFS4_ACCESS_EXECUTE; | |
1788 | } | |
1789 | status = rpc_call_sync(NFS_CLIENT(inode), &msg, 0); | |
1790 | if (!status) { | |
1791 | entry->mask = 0; | |
1792 | if (res.access & NFS4_ACCESS_READ) | |
1793 | entry->mask |= MAY_READ; | |
1794 | if (res.access & (NFS4_ACCESS_MODIFY | NFS4_ACCESS_EXTEND | NFS4_ACCESS_DELETE)) | |
1795 | entry->mask |= MAY_WRITE; | |
1796 | if (res.access & (NFS4_ACCESS_LOOKUP|NFS4_ACCESS_EXECUTE)) | |
1797 | entry->mask |= MAY_EXEC; | |
1798 | } | |
1799 | return status; | |
1800 | } | |
1801 | ||
1802 | static int nfs4_proc_access(struct inode *inode, struct nfs_access_entry *entry) | |
1803 | { | |
1804 | struct nfs4_exception exception = { }; | |
1805 | int err; | |
1806 | do { | |
1807 | err = nfs4_handle_exception(NFS_SERVER(inode), | |
1808 | _nfs4_proc_access(inode, entry), | |
1809 | &exception); | |
1810 | } while (exception.retry); | |
1811 | return err; | |
1812 | } | |
1813 | ||
1814 | /* | |
1815 | * TODO: For the time being, we don't try to get any attributes | |
1816 | * along with any of the zero-copy operations READ, READDIR, | |
1817 | * READLINK, WRITE. | |
1818 | * | |
1819 | * In the case of the first three, we want to put the GETATTR | |
1820 | * after the read-type operation -- this is because it is hard | |
1821 | * to predict the length of a GETATTR response in v4, and thus | |
1822 | * align the READ data correctly. This means that the GETATTR | |
1823 | * may end up partially falling into the page cache, and we should | |
1824 | * shift it into the 'tail' of the xdr_buf before processing. | |
1825 | * To do this efficiently, we need to know the total length | |
1826 | * of data received, which doesn't seem to be available outside | |
1827 | * of the RPC layer. | |
1828 | * | |
1829 | * In the case of WRITE, we also want to put the GETATTR after | |
1830 | * the operation -- in this case because we want to make sure | |
1831 | * we get the post-operation mtime and size. This means that | |
1832 | * we can't use xdr_encode_pages() as written: we need a variant | |
1833 | * of it which would leave room in the 'tail' iovec. | |
1834 | * | |
1835 | * Both of these changes to the XDR layer would in fact be quite | |
1836 | * minor, but I decided to leave them for a subsequent patch. | |
1837 | */ | |
1838 | static int _nfs4_proc_readlink(struct inode *inode, struct page *page, | |
1839 | unsigned int pgbase, unsigned int pglen) | |
1840 | { | |
1841 | struct nfs4_readlink args = { | |
1842 | .fh = NFS_FH(inode), | |
1843 | .pgbase = pgbase, | |
1844 | .pglen = pglen, | |
1845 | .pages = &page, | |
1846 | }; | |
1847 | struct rpc_message msg = { | |
1848 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_READLINK], | |
1849 | .rpc_argp = &args, | |
1850 | .rpc_resp = NULL, | |
1851 | }; | |
1852 | ||
1853 | return rpc_call_sync(NFS_CLIENT(inode), &msg, 0); | |
1854 | } | |
1855 | ||
1856 | static int nfs4_proc_readlink(struct inode *inode, struct page *page, | |
1857 | unsigned int pgbase, unsigned int pglen) | |
1858 | { | |
1859 | struct nfs4_exception exception = { }; | |
1860 | int err; | |
1861 | do { | |
1862 | err = nfs4_handle_exception(NFS_SERVER(inode), | |
1863 | _nfs4_proc_readlink(inode, page, pgbase, pglen), | |
1864 | &exception); | |
1865 | } while (exception.retry); | |
1866 | return err; | |
1867 | } | |
1868 | ||
1da177e4 LT |
1869 | /* |
1870 | * Got race? | |
1871 | * We will need to arrange for the VFS layer to provide an atomic open. | |
1872 | * Until then, this create/open method is prone to inefficiency and race | |
1873 | * conditions due to the lookup, create, and open VFS calls from sys_open() | |
1874 | * placed on the wire. | |
1875 | * | |
1876 | * Given the above sorry state of affairs, I'm simply sending an OPEN. | |
1877 | * The file will be opened again in the subsequent VFS open call | |
1878 | * (nfs4_proc_file_open). | |
1879 | * | |
1880 | * The open for read will just hang around to be used by any process that | |
1881 | * opens the file O_RDONLY. This will all be resolved with the VFS changes. | |
1882 | */ | |
1883 | ||
1884 | static int | |
1885 | nfs4_proc_create(struct inode *dir, struct dentry *dentry, struct iattr *sattr, | |
02a913a7 | 1886 | int flags, struct nameidata *nd) |
1da177e4 | 1887 | { |
ad389da7 TM |
1888 | struct path path = { |
1889 | .mnt = nd->mnt, | |
1890 | .dentry = dentry, | |
1891 | }; | |
1da177e4 LT |
1892 | struct nfs4_state *state; |
1893 | struct rpc_cred *cred; | |
1894 | int status = 0; | |
1895 | ||
1f163415 | 1896 | cred = rpcauth_lookupcred(NFS_CLIENT(dir)->cl_auth, 0); |
1da177e4 LT |
1897 | if (IS_ERR(cred)) { |
1898 | status = PTR_ERR(cred); | |
1899 | goto out; | |
1900 | } | |
ad389da7 | 1901 | state = nfs4_do_open(dir, &path, flags, sattr, cred); |
1da177e4 LT |
1902 | put_rpccred(cred); |
1903 | if (IS_ERR(state)) { | |
1904 | status = PTR_ERR(state); | |
1905 | goto out; | |
1906 | } | |
24ac23ab | 1907 | d_instantiate(dentry, igrab(state->inode)); |
1da177e4 LT |
1908 | if (flags & O_EXCL) { |
1909 | struct nfs_fattr fattr; | |
3e4f6290 | 1910 | status = nfs4_do_setattr(state->inode, &fattr, sattr, state); |
02a913a7 | 1911 | if (status == 0) |
65e4308d | 1912 | nfs_setattr_update_inode(state->inode, sattr); |
aa53ed54 | 1913 | nfs_post_op_update_inode(state->inode, &fattr); |
02a913a7 | 1914 | } |
ad389da7 | 1915 | if (status == 0 && (nd->flags & LOOKUP_OPEN) != 0) |
4a35bd41 | 1916 | status = nfs4_intent_set_file(nd, &path, state); |
02a913a7 | 1917 | else |
4a35bd41 | 1918 | nfs4_close_state(&path, state, flags); |
1da177e4 LT |
1919 | out: |
1920 | return status; | |
1921 | } | |
1922 | ||
1923 | static int _nfs4_proc_remove(struct inode *dir, struct qstr *name) | |
1924 | { | |
16e42959 | 1925 | struct nfs_server *server = NFS_SERVER(dir); |
4fdc17b2 | 1926 | struct nfs_removeargs args = { |
1da177e4 | 1927 | .fh = NFS_FH(dir), |
4fdc17b2 TM |
1928 | .name.len = name->len, |
1929 | .name.name = name->name, | |
16e42959 TM |
1930 | .bitmask = server->attr_bitmask, |
1931 | }; | |
4fdc17b2 | 1932 | struct nfs_removeres res = { |
16e42959 | 1933 | .server = server, |
1da177e4 | 1934 | }; |
1da177e4 | 1935 | struct rpc_message msg = { |
4fdc17b2 TM |
1936 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_REMOVE], |
1937 | .rpc_argp = &args, | |
1938 | .rpc_resp = &res, | |
1da177e4 LT |
1939 | }; |
1940 | int status; | |
1941 | ||
4fdc17b2 | 1942 | nfs_fattr_init(&res.dir_attr); |
16e42959 TM |
1943 | status = rpc_call_sync(server->client, &msg, 0); |
1944 | if (status == 0) { | |
1945 | update_changeattr(dir, &res.cinfo); | |
4fdc17b2 | 1946 | nfs_post_op_update_inode(dir, &res.dir_attr); |
16e42959 | 1947 | } |
1da177e4 LT |
1948 | return status; |
1949 | } | |
1950 | ||
1951 | static int nfs4_proc_remove(struct inode *dir, struct qstr *name) | |
1952 | { | |
1953 | struct nfs4_exception exception = { }; | |
1954 | int err; | |
1955 | do { | |
1956 | err = nfs4_handle_exception(NFS_SERVER(dir), | |
1957 | _nfs4_proc_remove(dir, name), | |
1958 | &exception); | |
1959 | } while (exception.retry); | |
1960 | return err; | |
1961 | } | |
1962 | ||
e4eff1a6 | 1963 | static void nfs4_proc_unlink_setup(struct rpc_message *msg, struct inode *dir) |
1da177e4 | 1964 | { |
e4eff1a6 TM |
1965 | struct nfs_server *server = NFS_SERVER(dir); |
1966 | struct nfs_removeargs *args = msg->rpc_argp; | |
1967 | struct nfs_removeres *res = msg->rpc_resp; | |
1da177e4 | 1968 | |
e4eff1a6 TM |
1969 | args->bitmask = server->attr_bitmask; |
1970 | res->server = server; | |
1da177e4 | 1971 | msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_REMOVE]; |
1da177e4 LT |
1972 | } |
1973 | ||
e4eff1a6 | 1974 | static int nfs4_proc_unlink_done(struct rpc_task *task, struct inode *dir) |
1da177e4 | 1975 | { |
e4eff1a6 TM |
1976 | struct nfs_removeres *res = task->tk_msg.rpc_resp; |
1977 | ||
1978 | if (nfs4_async_handle_error(task, res->server) == -EAGAIN) | |
1979 | return 0; | |
1980 | update_changeattr(dir, &res->cinfo); | |
1981 | nfs_post_op_update_inode(dir, &res->dir_attr); | |
1982 | return 1; | |
1da177e4 LT |
1983 | } |
1984 | ||
1985 | static int _nfs4_proc_rename(struct inode *old_dir, struct qstr *old_name, | |
1986 | struct inode *new_dir, struct qstr *new_name) | |
1987 | { | |
6caf2c82 | 1988 | struct nfs_server *server = NFS_SERVER(old_dir); |
1da177e4 LT |
1989 | struct nfs4_rename_arg arg = { |
1990 | .old_dir = NFS_FH(old_dir), | |
1991 | .new_dir = NFS_FH(new_dir), | |
1992 | .old_name = old_name, | |
1993 | .new_name = new_name, | |
6caf2c82 TM |
1994 | .bitmask = server->attr_bitmask, |
1995 | }; | |
1996 | struct nfs_fattr old_fattr, new_fattr; | |
1997 | struct nfs4_rename_res res = { | |
1998 | .server = server, | |
1999 | .old_fattr = &old_fattr, | |
2000 | .new_fattr = &new_fattr, | |
1da177e4 | 2001 | }; |
1da177e4 LT |
2002 | struct rpc_message msg = { |
2003 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RENAME], | |
2004 | .rpc_argp = &arg, | |
2005 | .rpc_resp = &res, | |
2006 | }; | |
2007 | int status; | |
2008 | ||
6caf2c82 TM |
2009 | nfs_fattr_init(res.old_fattr); |
2010 | nfs_fattr_init(res.new_fattr); | |
2011 | status = rpc_call_sync(server->client, &msg, 0); | |
1da177e4 LT |
2012 | |
2013 | if (!status) { | |
2014 | update_changeattr(old_dir, &res.old_cinfo); | |
6caf2c82 | 2015 | nfs_post_op_update_inode(old_dir, res.old_fattr); |
1da177e4 | 2016 | update_changeattr(new_dir, &res.new_cinfo); |
6caf2c82 | 2017 | nfs_post_op_update_inode(new_dir, res.new_fattr); |
1da177e4 LT |
2018 | } |
2019 | return status; | |
2020 | } | |
2021 | ||
2022 | static int nfs4_proc_rename(struct inode *old_dir, struct qstr *old_name, | |
2023 | struct inode *new_dir, struct qstr *new_name) | |
2024 | { | |
2025 | struct nfs4_exception exception = { }; | |
2026 | int err; | |
2027 | do { | |
2028 | err = nfs4_handle_exception(NFS_SERVER(old_dir), | |
2029 | _nfs4_proc_rename(old_dir, old_name, | |
2030 | new_dir, new_name), | |
2031 | &exception); | |
2032 | } while (exception.retry); | |
2033 | return err; | |
2034 | } | |
2035 | ||
2036 | static int _nfs4_proc_link(struct inode *inode, struct inode *dir, struct qstr *name) | |
2037 | { | |
91ba2eee | 2038 | struct nfs_server *server = NFS_SERVER(inode); |
1da177e4 LT |
2039 | struct nfs4_link_arg arg = { |
2040 | .fh = NFS_FH(inode), | |
2041 | .dir_fh = NFS_FH(dir), | |
2042 | .name = name, | |
91ba2eee TM |
2043 | .bitmask = server->attr_bitmask, |
2044 | }; | |
2045 | struct nfs_fattr fattr, dir_attr; | |
2046 | struct nfs4_link_res res = { | |
2047 | .server = server, | |
2048 | .fattr = &fattr, | |
2049 | .dir_attr = &dir_attr, | |
1da177e4 | 2050 | }; |
1da177e4 LT |
2051 | struct rpc_message msg = { |
2052 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LINK], | |
2053 | .rpc_argp = &arg, | |
91ba2eee | 2054 | .rpc_resp = &res, |
1da177e4 LT |
2055 | }; |
2056 | int status; | |
2057 | ||
91ba2eee TM |
2058 | nfs_fattr_init(res.fattr); |
2059 | nfs_fattr_init(res.dir_attr); | |
2060 | status = rpc_call_sync(server->client, &msg, 0); | |
2061 | if (!status) { | |
2062 | update_changeattr(dir, &res.cinfo); | |
2063 | nfs_post_op_update_inode(dir, res.dir_attr); | |
73a3d07c | 2064 | nfs_post_op_update_inode(inode, res.fattr); |
91ba2eee | 2065 | } |
1da177e4 LT |
2066 | |
2067 | return status; | |
2068 | } | |
2069 | ||
2070 | static int nfs4_proc_link(struct inode *inode, struct inode *dir, struct qstr *name) | |
2071 | { | |
2072 | struct nfs4_exception exception = { }; | |
2073 | int err; | |
2074 | do { | |
2075 | err = nfs4_handle_exception(NFS_SERVER(inode), | |
2076 | _nfs4_proc_link(inode, dir, name), | |
2077 | &exception); | |
2078 | } while (exception.retry); | |
2079 | return err; | |
2080 | } | |
2081 | ||
4f390c15 | 2082 | static int _nfs4_proc_symlink(struct inode *dir, struct dentry *dentry, |
94a6d753 | 2083 | struct page *page, unsigned int len, struct iattr *sattr) |
1da177e4 LT |
2084 | { |
2085 | struct nfs_server *server = NFS_SERVER(dir); | |
4f390c15 CL |
2086 | struct nfs_fh fhandle; |
2087 | struct nfs_fattr fattr, dir_fattr; | |
1da177e4 LT |
2088 | struct nfs4_create_arg arg = { |
2089 | .dir_fh = NFS_FH(dir), | |
2090 | .server = server, | |
4f390c15 | 2091 | .name = &dentry->d_name, |
1da177e4 LT |
2092 | .attrs = sattr, |
2093 | .ftype = NF4LNK, | |
2094 | .bitmask = server->attr_bitmask, | |
2095 | }; | |
2096 | struct nfs4_create_res res = { | |
2097 | .server = server, | |
4f390c15 CL |
2098 | .fh = &fhandle, |
2099 | .fattr = &fattr, | |
56ae19f3 | 2100 | .dir_fattr = &dir_fattr, |
1da177e4 LT |
2101 | }; |
2102 | struct rpc_message msg = { | |
2103 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SYMLINK], | |
2104 | .rpc_argp = &arg, | |
2105 | .rpc_resp = &res, | |
2106 | }; | |
2107 | int status; | |
2108 | ||
94a6d753 | 2109 | if (len > NFS4_MAXPATHLEN) |
1da177e4 | 2110 | return -ENAMETOOLONG; |
4f390c15 | 2111 | |
94a6d753 CL |
2112 | arg.u.symlink.pages = &page; |
2113 | arg.u.symlink.len = len; | |
4f390c15 | 2114 | nfs_fattr_init(&fattr); |
56ae19f3 | 2115 | nfs_fattr_init(&dir_fattr); |
1da177e4 LT |
2116 | |
2117 | status = rpc_call_sync(NFS_CLIENT(dir), &msg, 0); | |
4f390c15 | 2118 | if (!status) { |
1da177e4 | 2119 | update_changeattr(dir, &res.dir_cinfo); |
4f390c15 CL |
2120 | nfs_post_op_update_inode(dir, res.dir_fattr); |
2121 | status = nfs_instantiate(dentry, &fhandle, &fattr); | |
2122 | } | |
1da177e4 LT |
2123 | return status; |
2124 | } | |
2125 | ||
4f390c15 | 2126 | static int nfs4_proc_symlink(struct inode *dir, struct dentry *dentry, |
94a6d753 | 2127 | struct page *page, unsigned int len, struct iattr *sattr) |
1da177e4 LT |
2128 | { |
2129 | struct nfs4_exception exception = { }; | |
2130 | int err; | |
2131 | do { | |
2132 | err = nfs4_handle_exception(NFS_SERVER(dir), | |
94a6d753 CL |
2133 | _nfs4_proc_symlink(dir, dentry, page, |
2134 | len, sattr), | |
1da177e4 LT |
2135 | &exception); |
2136 | } while (exception.retry); | |
2137 | return err; | |
2138 | } | |
2139 | ||
2140 | static int _nfs4_proc_mkdir(struct inode *dir, struct dentry *dentry, | |
2141 | struct iattr *sattr) | |
2142 | { | |
2143 | struct nfs_server *server = NFS_SERVER(dir); | |
2144 | struct nfs_fh fhandle; | |
56ae19f3 | 2145 | struct nfs_fattr fattr, dir_fattr; |
1da177e4 LT |
2146 | struct nfs4_create_arg arg = { |
2147 | .dir_fh = NFS_FH(dir), | |
2148 | .server = server, | |
2149 | .name = &dentry->d_name, | |
2150 | .attrs = sattr, | |
2151 | .ftype = NF4DIR, | |
2152 | .bitmask = server->attr_bitmask, | |
2153 | }; | |
2154 | struct nfs4_create_res res = { | |
2155 | .server = server, | |
2156 | .fh = &fhandle, | |
2157 | .fattr = &fattr, | |
56ae19f3 | 2158 | .dir_fattr = &dir_fattr, |
1da177e4 LT |
2159 | }; |
2160 | struct rpc_message msg = { | |
2161 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_CREATE], | |
2162 | .rpc_argp = &arg, | |
2163 | .rpc_resp = &res, | |
2164 | }; | |
2165 | int status; | |
2166 | ||
0e574af1 | 2167 | nfs_fattr_init(&fattr); |
56ae19f3 | 2168 | nfs_fattr_init(&dir_fattr); |
1da177e4 LT |
2169 | |
2170 | status = rpc_call_sync(NFS_CLIENT(dir), &msg, 0); | |
2171 | if (!status) { | |
2172 | update_changeattr(dir, &res.dir_cinfo); | |
56ae19f3 | 2173 | nfs_post_op_update_inode(dir, res.dir_fattr); |
1da177e4 LT |
2174 | status = nfs_instantiate(dentry, &fhandle, &fattr); |
2175 | } | |
2176 | return status; | |
2177 | } | |
2178 | ||
2179 | static int nfs4_proc_mkdir(struct inode *dir, struct dentry *dentry, | |
2180 | struct iattr *sattr) | |
2181 | { | |
2182 | struct nfs4_exception exception = { }; | |
2183 | int err; | |
2184 | do { | |
2185 | err = nfs4_handle_exception(NFS_SERVER(dir), | |
2186 | _nfs4_proc_mkdir(dir, dentry, sattr), | |
2187 | &exception); | |
2188 | } while (exception.retry); | |
2189 | return err; | |
2190 | } | |
2191 | ||
2192 | static int _nfs4_proc_readdir(struct dentry *dentry, struct rpc_cred *cred, | |
2193 | u64 cookie, struct page *page, unsigned int count, int plus) | |
2194 | { | |
2195 | struct inode *dir = dentry->d_inode; | |
2196 | struct nfs4_readdir_arg args = { | |
2197 | .fh = NFS_FH(dir), | |
2198 | .pages = &page, | |
2199 | .pgbase = 0, | |
2200 | .count = count, | |
2201 | .bitmask = NFS_SERVER(dentry->d_inode)->attr_bitmask, | |
2202 | }; | |
2203 | struct nfs4_readdir_res res; | |
2204 | struct rpc_message msg = { | |
2205 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_READDIR], | |
2206 | .rpc_argp = &args, | |
2207 | .rpc_resp = &res, | |
2208 | .rpc_cred = cred, | |
2209 | }; | |
2210 | int status; | |
2211 | ||
eadf4598 TM |
2212 | dprintk("%s: dentry = %s/%s, cookie = %Lu\n", __FUNCTION__, |
2213 | dentry->d_parent->d_name.name, | |
2214 | dentry->d_name.name, | |
2215 | (unsigned long long)cookie); | |
1da177e4 LT |
2216 | nfs4_setup_readdir(cookie, NFS_COOKIEVERF(dir), dentry, &args); |
2217 | res.pgbase = args.pgbase; | |
2218 | status = rpc_call_sync(NFS_CLIENT(dir), &msg, 0); | |
2219 | if (status == 0) | |
2220 | memcpy(NFS_COOKIEVERF(dir), res.verifier.data, NFS4_VERIFIER_SIZE); | |
eadf4598 | 2221 | dprintk("%s: returns %d\n", __FUNCTION__, status); |
1da177e4 LT |
2222 | return status; |
2223 | } | |
2224 | ||
2225 | static int nfs4_proc_readdir(struct dentry *dentry, struct rpc_cred *cred, | |
2226 | u64 cookie, struct page *page, unsigned int count, int plus) | |
2227 | { | |
2228 | struct nfs4_exception exception = { }; | |
2229 | int err; | |
2230 | do { | |
2231 | err = nfs4_handle_exception(NFS_SERVER(dentry->d_inode), | |
2232 | _nfs4_proc_readdir(dentry, cred, cookie, | |
2233 | page, count, plus), | |
2234 | &exception); | |
2235 | } while (exception.retry); | |
2236 | return err; | |
2237 | } | |
2238 | ||
2239 | static int _nfs4_proc_mknod(struct inode *dir, struct dentry *dentry, | |
2240 | struct iattr *sattr, dev_t rdev) | |
2241 | { | |
2242 | struct nfs_server *server = NFS_SERVER(dir); | |
2243 | struct nfs_fh fh; | |
56ae19f3 | 2244 | struct nfs_fattr fattr, dir_fattr; |
1da177e4 LT |
2245 | struct nfs4_create_arg arg = { |
2246 | .dir_fh = NFS_FH(dir), | |
2247 | .server = server, | |
2248 | .name = &dentry->d_name, | |
2249 | .attrs = sattr, | |
2250 | .bitmask = server->attr_bitmask, | |
2251 | }; | |
2252 | struct nfs4_create_res res = { | |
2253 | .server = server, | |
2254 | .fh = &fh, | |
2255 | .fattr = &fattr, | |
56ae19f3 | 2256 | .dir_fattr = &dir_fattr, |
1da177e4 LT |
2257 | }; |
2258 | struct rpc_message msg = { | |
2259 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_CREATE], | |
2260 | .rpc_argp = &arg, | |
2261 | .rpc_resp = &res, | |
2262 | }; | |
2263 | int status; | |
2264 | int mode = sattr->ia_mode; | |
2265 | ||
0e574af1 | 2266 | nfs_fattr_init(&fattr); |
56ae19f3 | 2267 | nfs_fattr_init(&dir_fattr); |
1da177e4 LT |
2268 | |
2269 | BUG_ON(!(sattr->ia_valid & ATTR_MODE)); | |
2270 | BUG_ON(!S_ISFIFO(mode) && !S_ISBLK(mode) && !S_ISCHR(mode) && !S_ISSOCK(mode)); | |
2271 | if (S_ISFIFO(mode)) | |
2272 | arg.ftype = NF4FIFO; | |
2273 | else if (S_ISBLK(mode)) { | |
2274 | arg.ftype = NF4BLK; | |
2275 | arg.u.device.specdata1 = MAJOR(rdev); | |
2276 | arg.u.device.specdata2 = MINOR(rdev); | |
2277 | } | |
2278 | else if (S_ISCHR(mode)) { | |
2279 | arg.ftype = NF4CHR; | |
2280 | arg.u.device.specdata1 = MAJOR(rdev); | |
2281 | arg.u.device.specdata2 = MINOR(rdev); | |
2282 | } | |
2283 | else | |
2284 | arg.ftype = NF4SOCK; | |
2285 | ||
2286 | status = rpc_call_sync(NFS_CLIENT(dir), &msg, 0); | |
2287 | if (status == 0) { | |
2288 | update_changeattr(dir, &res.dir_cinfo); | |
56ae19f3 | 2289 | nfs_post_op_update_inode(dir, res.dir_fattr); |
1da177e4 LT |
2290 | status = nfs_instantiate(dentry, &fh, &fattr); |
2291 | } | |
2292 | return status; | |
2293 | } | |
2294 | ||
2295 | static int nfs4_proc_mknod(struct inode *dir, struct dentry *dentry, | |
2296 | struct iattr *sattr, dev_t rdev) | |
2297 | { | |
2298 | struct nfs4_exception exception = { }; | |
2299 | int err; | |
2300 | do { | |
2301 | err = nfs4_handle_exception(NFS_SERVER(dir), | |
2302 | _nfs4_proc_mknod(dir, dentry, sattr, rdev), | |
2303 | &exception); | |
2304 | } while (exception.retry); | |
2305 | return err; | |
2306 | } | |
2307 | ||
2308 | static int _nfs4_proc_statfs(struct nfs_server *server, struct nfs_fh *fhandle, | |
2309 | struct nfs_fsstat *fsstat) | |
2310 | { | |
2311 | struct nfs4_statfs_arg args = { | |
2312 | .fh = fhandle, | |
2313 | .bitmask = server->attr_bitmask, | |
2314 | }; | |
2315 | struct rpc_message msg = { | |
2316 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_STATFS], | |
2317 | .rpc_argp = &args, | |
2318 | .rpc_resp = fsstat, | |
2319 | }; | |
2320 | ||
0e574af1 | 2321 | nfs_fattr_init(fsstat->fattr); |
1da177e4 LT |
2322 | return rpc_call_sync(server->client, &msg, 0); |
2323 | } | |
2324 | ||
2325 | static int nfs4_proc_statfs(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fsstat *fsstat) | |
2326 | { | |
2327 | struct nfs4_exception exception = { }; | |
2328 | int err; | |
2329 | do { | |
2330 | err = nfs4_handle_exception(server, | |
2331 | _nfs4_proc_statfs(server, fhandle, fsstat), | |
2332 | &exception); | |
2333 | } while (exception.retry); | |
2334 | return err; | |
2335 | } | |
2336 | ||
2337 | static int _nfs4_do_fsinfo(struct nfs_server *server, struct nfs_fh *fhandle, | |
2338 | struct nfs_fsinfo *fsinfo) | |
2339 | { | |
2340 | struct nfs4_fsinfo_arg args = { | |
2341 | .fh = fhandle, | |
2342 | .bitmask = server->attr_bitmask, | |
2343 | }; | |
2344 | struct rpc_message msg = { | |
2345 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_FSINFO], | |
2346 | .rpc_argp = &args, | |
2347 | .rpc_resp = fsinfo, | |
2348 | }; | |
2349 | ||
2350 | return rpc_call_sync(server->client, &msg, 0); | |
2351 | } | |
2352 | ||
2353 | static int nfs4_do_fsinfo(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fsinfo *fsinfo) | |
2354 | { | |
2355 | struct nfs4_exception exception = { }; | |
2356 | int err; | |
2357 | ||
2358 | do { | |
2359 | err = nfs4_handle_exception(server, | |
2360 | _nfs4_do_fsinfo(server, fhandle, fsinfo), | |
2361 | &exception); | |
2362 | } while (exception.retry); | |
2363 | return err; | |
2364 | } | |
2365 | ||
2366 | static int nfs4_proc_fsinfo(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fsinfo *fsinfo) | |
2367 | { | |
0e574af1 | 2368 | nfs_fattr_init(fsinfo->fattr); |
1da177e4 LT |
2369 | return nfs4_do_fsinfo(server, fhandle, fsinfo); |
2370 | } | |
2371 | ||
2372 | static int _nfs4_proc_pathconf(struct nfs_server *server, struct nfs_fh *fhandle, | |
2373 | struct nfs_pathconf *pathconf) | |
2374 | { | |
2375 | struct nfs4_pathconf_arg args = { | |
2376 | .fh = fhandle, | |
2377 | .bitmask = server->attr_bitmask, | |
2378 | }; | |
2379 | struct rpc_message msg = { | |
2380 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_PATHCONF], | |
2381 | .rpc_argp = &args, | |
2382 | .rpc_resp = pathconf, | |
2383 | }; | |
2384 | ||
2385 | /* None of the pathconf attributes are mandatory to implement */ | |
2386 | if ((args.bitmask[0] & nfs4_pathconf_bitmap[0]) == 0) { | |
2387 | memset(pathconf, 0, sizeof(*pathconf)); | |
2388 | return 0; | |
2389 | } | |
2390 | ||
0e574af1 | 2391 | nfs_fattr_init(pathconf->fattr); |
1da177e4 LT |
2392 | return rpc_call_sync(server->client, &msg, 0); |
2393 | } | |
2394 | ||
2395 | static int nfs4_proc_pathconf(struct nfs_server *server, struct nfs_fh *fhandle, | |
2396 | struct nfs_pathconf *pathconf) | |
2397 | { | |
2398 | struct nfs4_exception exception = { }; | |
2399 | int err; | |
2400 | ||
2401 | do { | |
2402 | err = nfs4_handle_exception(server, | |
2403 | _nfs4_proc_pathconf(server, fhandle, pathconf), | |
2404 | &exception); | |
2405 | } while (exception.retry); | |
2406 | return err; | |
2407 | } | |
2408 | ||
ec06c096 | 2409 | static int nfs4_read_done(struct rpc_task *task, struct nfs_read_data *data) |
1da177e4 | 2410 | { |
ec06c096 | 2411 | struct nfs_server *server = NFS_SERVER(data->inode); |
1da177e4 | 2412 | |
ec06c096 | 2413 | if (nfs4_async_handle_error(task, server) == -EAGAIN) { |
1da177e4 | 2414 | rpc_restart_call(task); |
ec06c096 | 2415 | return -EAGAIN; |
1da177e4 LT |
2416 | } |
2417 | if (task->tk_status > 0) | |
ec06c096 TM |
2418 | renew_lease(server, data->timestamp); |
2419 | return 0; | |
1da177e4 LT |
2420 | } |
2421 | ||
ec06c096 | 2422 | static void nfs4_proc_read_setup(struct nfs_read_data *data) |
1da177e4 | 2423 | { |
1da177e4 LT |
2424 | struct rpc_message msg = { |
2425 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_READ], | |
2426 | .rpc_argp = &data->args, | |
2427 | .rpc_resp = &data->res, | |
2428 | .rpc_cred = data->cred, | |
2429 | }; | |
1da177e4 LT |
2430 | |
2431 | data->timestamp = jiffies; | |
2432 | ||
ec06c096 | 2433 | rpc_call_setup(&data->task, &msg, 0); |
1da177e4 LT |
2434 | } |
2435 | ||
788e7a89 | 2436 | static int nfs4_write_done(struct rpc_task *task, struct nfs_write_data *data) |
1da177e4 | 2437 | { |
1da177e4 LT |
2438 | struct inode *inode = data->inode; |
2439 | ||
2440 | if (nfs4_async_handle_error(task, NFS_SERVER(inode)) == -EAGAIN) { | |
2441 | rpc_restart_call(task); | |
788e7a89 | 2442 | return -EAGAIN; |
1da177e4 | 2443 | } |
4f9838c7 | 2444 | if (task->tk_status >= 0) { |
1da177e4 | 2445 | renew_lease(NFS_SERVER(inode), data->timestamp); |
4f9838c7 TM |
2446 | nfs_post_op_update_inode(inode, data->res.fattr); |
2447 | } | |
788e7a89 | 2448 | return 0; |
1da177e4 LT |
2449 | } |
2450 | ||
788e7a89 | 2451 | static void nfs4_proc_write_setup(struct nfs_write_data *data, int how) |
1da177e4 | 2452 | { |
1da177e4 LT |
2453 | struct rpc_message msg = { |
2454 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_WRITE], | |
2455 | .rpc_argp = &data->args, | |
2456 | .rpc_resp = &data->res, | |
2457 | .rpc_cred = data->cred, | |
2458 | }; | |
2459 | struct inode *inode = data->inode; | |
4f9838c7 | 2460 | struct nfs_server *server = NFS_SERVER(inode); |
1da177e4 | 2461 | int stable; |
1da177e4 LT |
2462 | |
2463 | if (how & FLUSH_STABLE) { | |
2464 | if (!NFS_I(inode)->ncommit) | |
2465 | stable = NFS_FILE_SYNC; | |
2466 | else | |
2467 | stable = NFS_DATA_SYNC; | |
2468 | } else | |
2469 | stable = NFS_UNSTABLE; | |
2470 | data->args.stable = stable; | |
4f9838c7 TM |
2471 | data->args.bitmask = server->attr_bitmask; |
2472 | data->res.server = server; | |
1da177e4 LT |
2473 | |
2474 | data->timestamp = jiffies; | |
2475 | ||
1da177e4 | 2476 | /* Finalize the task. */ |
788e7a89 | 2477 | rpc_call_setup(&data->task, &msg, 0); |
1da177e4 LT |
2478 | } |
2479 | ||
788e7a89 | 2480 | static int nfs4_commit_done(struct rpc_task *task, struct nfs_write_data *data) |
1da177e4 | 2481 | { |
1da177e4 LT |
2482 | struct inode *inode = data->inode; |
2483 | ||
2484 | if (nfs4_async_handle_error(task, NFS_SERVER(inode)) == -EAGAIN) { | |
2485 | rpc_restart_call(task); | |
788e7a89 | 2486 | return -EAGAIN; |
1da177e4 | 2487 | } |
4f9838c7 TM |
2488 | if (task->tk_status >= 0) |
2489 | nfs_post_op_update_inode(inode, data->res.fattr); | |
788e7a89 | 2490 | return 0; |
1da177e4 LT |
2491 | } |
2492 | ||
788e7a89 | 2493 | static void nfs4_proc_commit_setup(struct nfs_write_data *data, int how) |
1da177e4 | 2494 | { |
1da177e4 LT |
2495 | struct rpc_message msg = { |
2496 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_COMMIT], | |
2497 | .rpc_argp = &data->args, | |
2498 | .rpc_resp = &data->res, | |
2499 | .rpc_cred = data->cred, | |
2500 | }; | |
788e7a89 | 2501 | struct nfs_server *server = NFS_SERVER(data->inode); |
1da177e4 | 2502 | |
4f9838c7 TM |
2503 | data->args.bitmask = server->attr_bitmask; |
2504 | data->res.server = server; | |
2505 | ||
788e7a89 | 2506 | rpc_call_setup(&data->task, &msg, 0); |
1da177e4 LT |
2507 | } |
2508 | ||
2509 | /* | |
2510 | * nfs4_proc_async_renew(): This is not one of the nfs_rpc_ops; it is a special | |
2511 | * standalone procedure for queueing an asynchronous RENEW. | |
2512 | */ | |
963d8fe5 | 2513 | static void nfs4_renew_done(struct rpc_task *task, void *data) |
1da177e4 | 2514 | { |
adfa6f98 | 2515 | struct nfs_client *clp = (struct nfs_client *)task->tk_msg.rpc_argp; |
963d8fe5 | 2516 | unsigned long timestamp = (unsigned long)data; |
1da177e4 LT |
2517 | |
2518 | if (task->tk_status < 0) { | |
2519 | switch (task->tk_status) { | |
2520 | case -NFS4ERR_STALE_CLIENTID: | |
2521 | case -NFS4ERR_EXPIRED: | |
2522 | case -NFS4ERR_CB_PATH_DOWN: | |
2523 | nfs4_schedule_state_recovery(clp); | |
2524 | } | |
2525 | return; | |
2526 | } | |
2527 | spin_lock(&clp->cl_lock); | |
2528 | if (time_before(clp->cl_last_renewal,timestamp)) | |
2529 | clp->cl_last_renewal = timestamp; | |
2530 | spin_unlock(&clp->cl_lock); | |
2531 | } | |
2532 | ||
963d8fe5 TM |
2533 | static const struct rpc_call_ops nfs4_renew_ops = { |
2534 | .rpc_call_done = nfs4_renew_done, | |
2535 | }; | |
2536 | ||
adfa6f98 | 2537 | int nfs4_proc_async_renew(struct nfs_client *clp, struct rpc_cred *cred) |
1da177e4 LT |
2538 | { |
2539 | struct rpc_message msg = { | |
2540 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RENEW], | |
2541 | .rpc_argp = clp, | |
b4454fe1 | 2542 | .rpc_cred = cred, |
1da177e4 LT |
2543 | }; |
2544 | ||
2545 | return rpc_call_async(clp->cl_rpcclient, &msg, RPC_TASK_SOFT, | |
963d8fe5 | 2546 | &nfs4_renew_ops, (void *)jiffies); |
1da177e4 LT |
2547 | } |
2548 | ||
adfa6f98 | 2549 | int nfs4_proc_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 | unsigned long now = jiffies; | |
2557 | int status; | |
2558 | ||
2559 | status = rpc_call_sync(clp->cl_rpcclient, &msg, 0); | |
2560 | if (status < 0) | |
2561 | return status; | |
2562 | spin_lock(&clp->cl_lock); | |
2563 | if (time_before(clp->cl_last_renewal,now)) | |
2564 | clp->cl_last_renewal = now; | |
2565 | spin_unlock(&clp->cl_lock); | |
2566 | return 0; | |
2567 | } | |
2568 | ||
aa1870af BF |
2569 | static inline int nfs4_server_supports_acls(struct nfs_server *server) |
2570 | { | |
2571 | return (server->caps & NFS_CAP_ACLS) | |
2572 | && (server->acl_bitmask & ACL4_SUPPORT_ALLOW_ACL) | |
2573 | && (server->acl_bitmask & ACL4_SUPPORT_DENY_ACL); | |
2574 | } | |
2575 | ||
2576 | /* Assuming that XATTR_SIZE_MAX is a multiple of PAGE_CACHE_SIZE, and that | |
2577 | * it's OK to put sizeof(void) * (XATTR_SIZE_MAX/PAGE_CACHE_SIZE) bytes on | |
2578 | * the stack. | |
2579 | */ | |
2580 | #define NFS4ACL_MAXPAGES (XATTR_SIZE_MAX >> PAGE_CACHE_SHIFT) | |
2581 | ||
2582 | static void buf_to_pages(const void *buf, size_t buflen, | |
2583 | struct page **pages, unsigned int *pgbase) | |
2584 | { | |
2585 | const void *p = buf; | |
2586 | ||
2587 | *pgbase = offset_in_page(buf); | |
2588 | p -= *pgbase; | |
2589 | while (p < buf + buflen) { | |
2590 | *(pages++) = virt_to_page(p); | |
2591 | p += PAGE_CACHE_SIZE; | |
2592 | } | |
2593 | } | |
2594 | ||
e50a1c2e BF |
2595 | struct nfs4_cached_acl { |
2596 | int cached; | |
2597 | size_t len; | |
3e9d4154 | 2598 | char data[0]; |
e50a1c2e BF |
2599 | }; |
2600 | ||
2601 | static void nfs4_set_cached_acl(struct inode *inode, struct nfs4_cached_acl *acl) | |
2602 | { | |
2603 | struct nfs_inode *nfsi = NFS_I(inode); | |
2604 | ||
2605 | spin_lock(&inode->i_lock); | |
2606 | kfree(nfsi->nfs4_acl); | |
2607 | nfsi->nfs4_acl = acl; | |
2608 | spin_unlock(&inode->i_lock); | |
2609 | } | |
2610 | ||
2611 | static void nfs4_zap_acl_attr(struct inode *inode) | |
2612 | { | |
2613 | nfs4_set_cached_acl(inode, NULL); | |
2614 | } | |
2615 | ||
2616 | static inline ssize_t nfs4_read_cached_acl(struct inode *inode, char *buf, size_t buflen) | |
2617 | { | |
2618 | struct nfs_inode *nfsi = NFS_I(inode); | |
2619 | struct nfs4_cached_acl *acl; | |
2620 | int ret = -ENOENT; | |
2621 | ||
2622 | spin_lock(&inode->i_lock); | |
2623 | acl = nfsi->nfs4_acl; | |
2624 | if (acl == NULL) | |
2625 | goto out; | |
2626 | if (buf == NULL) /* user is just asking for length */ | |
2627 | goto out_len; | |
2628 | if (acl->cached == 0) | |
2629 | goto out; | |
2630 | ret = -ERANGE; /* see getxattr(2) man page */ | |
2631 | if (acl->len > buflen) | |
2632 | goto out; | |
2633 | memcpy(buf, acl->data, acl->len); | |
2634 | out_len: | |
2635 | ret = acl->len; | |
2636 | out: | |
2637 | spin_unlock(&inode->i_lock); | |
2638 | return ret; | |
2639 | } | |
2640 | ||
2641 | static void nfs4_write_cached_acl(struct inode *inode, const char *buf, size_t acl_len) | |
2642 | { | |
2643 | struct nfs4_cached_acl *acl; | |
2644 | ||
2645 | if (buf && acl_len <= PAGE_SIZE) { | |
2646 | acl = kmalloc(sizeof(*acl) + acl_len, GFP_KERNEL); | |
2647 | if (acl == NULL) | |
2648 | goto out; | |
2649 | acl->cached = 1; | |
2650 | memcpy(acl->data, buf, acl_len); | |
2651 | } else { | |
2652 | acl = kmalloc(sizeof(*acl), GFP_KERNEL); | |
2653 | if (acl == NULL) | |
2654 | goto out; | |
2655 | acl->cached = 0; | |
2656 | } | |
2657 | acl->len = acl_len; | |
2658 | out: | |
2659 | nfs4_set_cached_acl(inode, acl); | |
2660 | } | |
2661 | ||
16b4289c | 2662 | static ssize_t __nfs4_get_acl_uncached(struct inode *inode, void *buf, size_t buflen) |
aa1870af | 2663 | { |
aa1870af BF |
2664 | struct page *pages[NFS4ACL_MAXPAGES]; |
2665 | struct nfs_getaclargs args = { | |
2666 | .fh = NFS_FH(inode), | |
2667 | .acl_pages = pages, | |
2668 | .acl_len = buflen, | |
2669 | }; | |
2670 | size_t resp_len = buflen; | |
e50a1c2e | 2671 | void *resp_buf; |
aa1870af BF |
2672 | struct rpc_message msg = { |
2673 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GETACL], | |
2674 | .rpc_argp = &args, | |
2675 | .rpc_resp = &resp_len, | |
2676 | }; | |
e50a1c2e | 2677 | struct page *localpage = NULL; |
aa1870af BF |
2678 | int ret; |
2679 | ||
e50a1c2e BF |
2680 | if (buflen < PAGE_SIZE) { |
2681 | /* As long as we're doing a round trip to the server anyway, | |
2682 | * let's be prepared for a page of acl data. */ | |
2683 | localpage = alloc_page(GFP_KERNEL); | |
2684 | resp_buf = page_address(localpage); | |
2685 | if (localpage == NULL) | |
2686 | return -ENOMEM; | |
2687 | args.acl_pages[0] = localpage; | |
2688 | args.acl_pgbase = 0; | |
1d95db8e | 2689 | resp_len = args.acl_len = PAGE_SIZE; |
e50a1c2e BF |
2690 | } else { |
2691 | resp_buf = buf; | |
2692 | buf_to_pages(buf, buflen, args.acl_pages, &args.acl_pgbase); | |
2693 | } | |
aa1870af | 2694 | ret = rpc_call_sync(NFS_CLIENT(inode), &msg, 0); |
e50a1c2e BF |
2695 | if (ret) |
2696 | goto out_free; | |
2697 | if (resp_len > args.acl_len) | |
2698 | nfs4_write_cached_acl(inode, NULL, resp_len); | |
2699 | else | |
2700 | nfs4_write_cached_acl(inode, resp_buf, resp_len); | |
2701 | if (buf) { | |
2702 | ret = -ERANGE; | |
2703 | if (resp_len > buflen) | |
2704 | goto out_free; | |
2705 | if (localpage) | |
2706 | memcpy(buf, resp_buf, resp_len); | |
2707 | } | |
2708 | ret = resp_len; | |
2709 | out_free: | |
2710 | if (localpage) | |
2711 | __free_page(localpage); | |
aa1870af BF |
2712 | return ret; |
2713 | } | |
2714 | ||
16b4289c TM |
2715 | static ssize_t nfs4_get_acl_uncached(struct inode *inode, void *buf, size_t buflen) |
2716 | { | |
2717 | struct nfs4_exception exception = { }; | |
2718 | ssize_t ret; | |
2719 | do { | |
2720 | ret = __nfs4_get_acl_uncached(inode, buf, buflen); | |
2721 | if (ret >= 0) | |
2722 | break; | |
2723 | ret = nfs4_handle_exception(NFS_SERVER(inode), ret, &exception); | |
2724 | } while (exception.retry); | |
2725 | return ret; | |
2726 | } | |
2727 | ||
e50a1c2e BF |
2728 | static ssize_t nfs4_proc_get_acl(struct inode *inode, void *buf, size_t buflen) |
2729 | { | |
2730 | struct nfs_server *server = NFS_SERVER(inode); | |
2731 | int ret; | |
2732 | ||
2733 | if (!nfs4_server_supports_acls(server)) | |
2734 | return -EOPNOTSUPP; | |
2735 | ret = nfs_revalidate_inode(server, inode); | |
2736 | if (ret < 0) | |
2737 | return ret; | |
2738 | ret = nfs4_read_cached_acl(inode, buf, buflen); | |
2739 | if (ret != -ENOENT) | |
2740 | return ret; | |
2741 | return nfs4_get_acl_uncached(inode, buf, buflen); | |
2742 | } | |
2743 | ||
16b4289c | 2744 | static int __nfs4_proc_set_acl(struct inode *inode, const void *buf, size_t buflen) |
4b580ee3 BF |
2745 | { |
2746 | struct nfs_server *server = NFS_SERVER(inode); | |
2747 | struct page *pages[NFS4ACL_MAXPAGES]; | |
2748 | struct nfs_setaclargs arg = { | |
2749 | .fh = NFS_FH(inode), | |
2750 | .acl_pages = pages, | |
2751 | .acl_len = buflen, | |
2752 | }; | |
2753 | struct rpc_message msg = { | |
2754 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SETACL], | |
2755 | .rpc_argp = &arg, | |
2756 | .rpc_resp = NULL, | |
2757 | }; | |
2758 | int ret; | |
2759 | ||
2760 | if (!nfs4_server_supports_acls(server)) | |
2761 | return -EOPNOTSUPP; | |
642ac549 | 2762 | nfs_inode_return_delegation(inode); |
4b580ee3 | 2763 | buf_to_pages(buf, buflen, arg.acl_pages, &arg.acl_pgbase); |
1f163415 | 2764 | ret = rpc_call_sync(NFS_CLIENT(inode), &msg, 0); |
08efa202 | 2765 | nfs_zap_caches(inode); |
4b580ee3 BF |
2766 | return ret; |
2767 | } | |
2768 | ||
16b4289c TM |
2769 | static int nfs4_proc_set_acl(struct inode *inode, const void *buf, size_t buflen) |
2770 | { | |
2771 | struct nfs4_exception exception = { }; | |
2772 | int err; | |
2773 | do { | |
2774 | err = nfs4_handle_exception(NFS_SERVER(inode), | |
2775 | __nfs4_proc_set_acl(inode, buf, buflen), | |
2776 | &exception); | |
2777 | } while (exception.retry); | |
2778 | return err; | |
2779 | } | |
2780 | ||
1da177e4 | 2781 | static int |
faf5f49c | 2782 | nfs4_async_handle_error(struct rpc_task *task, const struct nfs_server *server) |
1da177e4 | 2783 | { |
7539bbab | 2784 | struct nfs_client *clp = server->nfs_client; |
1da177e4 LT |
2785 | |
2786 | if (!clp || task->tk_status >= 0) | |
2787 | return 0; | |
2788 | switch(task->tk_status) { | |
2789 | case -NFS4ERR_STALE_CLIENTID: | |
2790 | case -NFS4ERR_STALE_STATEID: | |
2791 | case -NFS4ERR_EXPIRED: | |
2792 | rpc_sleep_on(&clp->cl_rpcwaitq, task, NULL, NULL); | |
2793 | nfs4_schedule_state_recovery(clp); | |
433fbe4c | 2794 | if (test_bit(NFS4CLNT_STATE_RECOVER, &clp->cl_state) == 0) |
1da177e4 LT |
2795 | rpc_wake_up_task(task); |
2796 | task->tk_status = 0; | |
2797 | return -EAGAIN; | |
1da177e4 | 2798 | case -NFS4ERR_DELAY: |
006ea73e CL |
2799 | nfs_inc_server_stats((struct nfs_server *) server, |
2800 | NFSIOS_DELAY); | |
2801 | case -NFS4ERR_GRACE: | |
1da177e4 LT |
2802 | rpc_delay(task, NFS4_POLL_RETRY_MAX); |
2803 | task->tk_status = 0; | |
2804 | return -EAGAIN; | |
2805 | case -NFS4ERR_OLD_STATEID: | |
2806 | task->tk_status = 0; | |
2807 | return -EAGAIN; | |
2808 | } | |
2809 | task->tk_status = nfs4_map_errors(task->tk_status); | |
2810 | return 0; | |
2811 | } | |
2812 | ||
433fbe4c TM |
2813 | static int nfs4_wait_bit_interruptible(void *word) |
2814 | { | |
2815 | if (signal_pending(current)) | |
2816 | return -ERESTARTSYS; | |
2817 | schedule(); | |
2818 | return 0; | |
2819 | } | |
2820 | ||
adfa6f98 | 2821 | static int nfs4_wait_clnt_recover(struct rpc_clnt *clnt, struct nfs_client *clp) |
1da177e4 | 2822 | { |
1da177e4 | 2823 | sigset_t oldset; |
433fbe4c | 2824 | int res; |
1da177e4 LT |
2825 | |
2826 | might_sleep(); | |
2827 | ||
e148582e TM |
2828 | rwsem_acquire(&clp->cl_sem.dep_map, 0, 0, _RET_IP_); |
2829 | ||
1da177e4 | 2830 | rpc_clnt_sigmask(clnt, &oldset); |
433fbe4c TM |
2831 | res = wait_on_bit(&clp->cl_state, NFS4CLNT_STATE_RECOVER, |
2832 | nfs4_wait_bit_interruptible, | |
2833 | TASK_INTERRUPTIBLE); | |
1da177e4 | 2834 | rpc_clnt_sigunmask(clnt, &oldset); |
e148582e TM |
2835 | |
2836 | rwsem_release(&clp->cl_sem.dep_map, 1, _RET_IP_); | |
1da177e4 LT |
2837 | return res; |
2838 | } | |
2839 | ||
2840 | static int nfs4_delay(struct rpc_clnt *clnt, long *timeout) | |
2841 | { | |
2842 | sigset_t oldset; | |
2843 | int res = 0; | |
2844 | ||
2845 | might_sleep(); | |
2846 | ||
2847 | if (*timeout <= 0) | |
2848 | *timeout = NFS4_POLL_RETRY_MIN; | |
2849 | if (*timeout > NFS4_POLL_RETRY_MAX) | |
2850 | *timeout = NFS4_POLL_RETRY_MAX; | |
2851 | rpc_clnt_sigmask(clnt, &oldset); | |
2852 | if (clnt->cl_intr) { | |
041e0e3b | 2853 | schedule_timeout_interruptible(*timeout); |
1da177e4 LT |
2854 | if (signalled()) |
2855 | res = -ERESTARTSYS; | |
041e0e3b NA |
2856 | } else |
2857 | schedule_timeout_uninterruptible(*timeout); | |
1da177e4 LT |
2858 | rpc_clnt_sigunmask(clnt, &oldset); |
2859 | *timeout <<= 1; | |
2860 | return res; | |
2861 | } | |
2862 | ||
2863 | /* This is the error handling routine for processes that are allowed | |
2864 | * to sleep. | |
2865 | */ | |
10afec90 | 2866 | static int nfs4_handle_exception(const struct nfs_server *server, int errorcode, struct nfs4_exception *exception) |
1da177e4 | 2867 | { |
7539bbab | 2868 | struct nfs_client *clp = server->nfs_client; |
1da177e4 LT |
2869 | int ret = errorcode; |
2870 | ||
2871 | exception->retry = 0; | |
2872 | switch(errorcode) { | |
2873 | case 0: | |
2874 | return 0; | |
2875 | case -NFS4ERR_STALE_CLIENTID: | |
2876 | case -NFS4ERR_STALE_STATEID: | |
2877 | case -NFS4ERR_EXPIRED: | |
433fbe4c | 2878 | nfs4_schedule_state_recovery(clp); |
1da177e4 LT |
2879 | ret = nfs4_wait_clnt_recover(server->client, clp); |
2880 | if (ret == 0) | |
2881 | exception->retry = 1; | |
2882 | break; | |
c514983d | 2883 | case -NFS4ERR_FILE_OPEN: |
1da177e4 LT |
2884 | case -NFS4ERR_GRACE: |
2885 | case -NFS4ERR_DELAY: | |
2886 | ret = nfs4_delay(server->client, &exception->timeout); | |
2c56617d TM |
2887 | if (ret != 0) |
2888 | break; | |
1da177e4 | 2889 | case -NFS4ERR_OLD_STATEID: |
2c56617d | 2890 | exception->retry = 1; |
1da177e4 LT |
2891 | } |
2892 | /* We failed to handle the error */ | |
2893 | return nfs4_map_errors(ret); | |
2894 | } | |
2895 | ||
adfa6f98 | 2896 | int nfs4_proc_setclientid(struct nfs_client *clp, u32 program, unsigned short port, struct rpc_cred *cred) |
1da177e4 LT |
2897 | { |
2898 | nfs4_verifier sc_verifier; | |
2899 | struct nfs4_setclientid setclientid = { | |
2900 | .sc_verifier = &sc_verifier, | |
2901 | .sc_prog = program, | |
2902 | }; | |
2903 | struct rpc_message msg = { | |
2904 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SETCLIENTID], | |
2905 | .rpc_argp = &setclientid, | |
2906 | .rpc_resp = clp, | |
286d7d6a | 2907 | .rpc_cred = cred, |
1da177e4 | 2908 | }; |
bc4785cd | 2909 | __be32 *p; |
1da177e4 LT |
2910 | int loop = 0; |
2911 | int status; | |
2912 | ||
bc4785cd | 2913 | p = (__be32*)sc_verifier.data; |
1da177e4 LT |
2914 | *p++ = htonl((u32)clp->cl_boot_time.tv_sec); |
2915 | *p = htonl((u32)clp->cl_boot_time.tv_nsec); | |
2916 | ||
2917 | for(;;) { | |
2918 | setclientid.sc_name_len = scnprintf(setclientid.sc_name, | |
2919 | sizeof(setclientid.sc_name), "%s/%u.%u.%u.%u %s %u", | |
24c8dbbb | 2920 | clp->cl_ipaddr, NIPQUAD(clp->cl_addr.sin_addr), |
286d7d6a | 2921 | cred->cr_ops->cr_name, |
1da177e4 LT |
2922 | clp->cl_id_uniquifier); |
2923 | setclientid.sc_netid_len = scnprintf(setclientid.sc_netid, | |
2924 | sizeof(setclientid.sc_netid), "tcp"); | |
2925 | setclientid.sc_uaddr_len = scnprintf(setclientid.sc_uaddr, | |
2926 | sizeof(setclientid.sc_uaddr), "%s.%d.%d", | |
2927 | clp->cl_ipaddr, port >> 8, port & 255); | |
2928 | ||
2929 | status = rpc_call_sync(clp->cl_rpcclient, &msg, 0); | |
2930 | if (status != -NFS4ERR_CLID_INUSE) | |
2931 | break; | |
2932 | if (signalled()) | |
2933 | break; | |
2934 | if (loop++ & 1) | |
2935 | ssleep(clp->cl_lease_time + 1); | |
2936 | else | |
2937 | if (++clp->cl_id_uniquifier == 0) | |
2938 | break; | |
2939 | } | |
2940 | return status; | |
2941 | } | |
2942 | ||
adfa6f98 | 2943 | static int _nfs4_proc_setclientid_confirm(struct nfs_client *clp, struct rpc_cred *cred) |
1da177e4 LT |
2944 | { |
2945 | struct nfs_fsinfo fsinfo; | |
2946 | struct rpc_message msg = { | |
2947 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SETCLIENTID_CONFIRM], | |
2948 | .rpc_argp = clp, | |
2949 | .rpc_resp = &fsinfo, | |
286d7d6a | 2950 | .rpc_cred = cred, |
1da177e4 LT |
2951 | }; |
2952 | unsigned long now; | |
2953 | int status; | |
2954 | ||
2955 | now = jiffies; | |
2956 | status = rpc_call_sync(clp->cl_rpcclient, &msg, 0); | |
2957 | if (status == 0) { | |
2958 | spin_lock(&clp->cl_lock); | |
2959 | clp->cl_lease_time = fsinfo.lease_time * HZ; | |
2960 | clp->cl_last_renewal = now; | |
58d9714a | 2961 | clear_bit(NFS4CLNT_LEASE_EXPIRED, &clp->cl_state); |
1da177e4 LT |
2962 | spin_unlock(&clp->cl_lock); |
2963 | } | |
2964 | return status; | |
2965 | } | |
2966 | ||
adfa6f98 | 2967 | int nfs4_proc_setclientid_confirm(struct nfs_client *clp, struct rpc_cred *cred) |
51581f3b TM |
2968 | { |
2969 | long timeout; | |
2970 | int err; | |
2971 | do { | |
2972 | err = _nfs4_proc_setclientid_confirm(clp, cred); | |
2973 | switch (err) { | |
2974 | case 0: | |
2975 | return err; | |
2976 | case -NFS4ERR_RESOURCE: | |
2977 | /* The IBM lawyers misread another document! */ | |
2978 | case -NFS4ERR_DELAY: | |
2979 | err = nfs4_delay(clp->cl_rpcclient, &timeout); | |
2980 | } | |
2981 | } while (err == 0); | |
2982 | return err; | |
2983 | } | |
2984 | ||
fe650407 TM |
2985 | struct nfs4_delegreturndata { |
2986 | struct nfs4_delegreturnargs args; | |
fa178f29 | 2987 | struct nfs4_delegreturnres res; |
fe650407 TM |
2988 | struct nfs_fh fh; |
2989 | nfs4_stateid stateid; | |
2990 | struct rpc_cred *cred; | |
26e976a8 | 2991 | unsigned long timestamp; |
fa178f29 | 2992 | struct nfs_fattr fattr; |
fe650407 TM |
2993 | int rpc_status; |
2994 | }; | |
2995 | ||
2996 | static void nfs4_delegreturn_prepare(struct rpc_task *task, void *calldata) | |
1da177e4 | 2997 | { |
fe650407 | 2998 | struct nfs4_delegreturndata *data = calldata; |
1da177e4 LT |
2999 | struct rpc_message msg = { |
3000 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_DELEGRETURN], | |
fe650407 | 3001 | .rpc_argp = &data->args, |
fa178f29 | 3002 | .rpc_resp = &data->res, |
fe650407 | 3003 | .rpc_cred = data->cred, |
1da177e4 | 3004 | }; |
fa178f29 | 3005 | nfs_fattr_init(data->res.fattr); |
fe650407 TM |
3006 | rpc_call_setup(task, &msg, 0); |
3007 | } | |
1da177e4 | 3008 | |
fe650407 TM |
3009 | static void nfs4_delegreturn_done(struct rpc_task *task, void *calldata) |
3010 | { | |
3011 | struct nfs4_delegreturndata *data = calldata; | |
3012 | data->rpc_status = task->tk_status; | |
26e976a8 | 3013 | if (data->rpc_status == 0) |
fa178f29 | 3014 | renew_lease(data->res.server, data->timestamp); |
fe650407 TM |
3015 | } |
3016 | ||
3017 | static void nfs4_delegreturn_release(void *calldata) | |
3018 | { | |
3019 | struct nfs4_delegreturndata *data = calldata; | |
3020 | ||
3021 | put_rpccred(data->cred); | |
3022 | kfree(calldata); | |
3023 | } | |
3024 | ||
c8d149f3 | 3025 | static const struct rpc_call_ops nfs4_delegreturn_ops = { |
fe650407 TM |
3026 | .rpc_call_prepare = nfs4_delegreturn_prepare, |
3027 | .rpc_call_done = nfs4_delegreturn_done, | |
3028 | .rpc_release = nfs4_delegreturn_release, | |
3029 | }; | |
3030 | ||
3031 | static int _nfs4_proc_delegreturn(struct inode *inode, struct rpc_cred *cred, const nfs4_stateid *stateid) | |
3032 | { | |
3033 | struct nfs4_delegreturndata *data; | |
fa178f29 | 3034 | struct nfs_server *server = NFS_SERVER(inode); |
fe650407 TM |
3035 | struct rpc_task *task; |
3036 | int status; | |
3037 | ||
3038 | data = kmalloc(sizeof(*data), GFP_KERNEL); | |
3039 | if (data == NULL) | |
3040 | return -ENOMEM; | |
3041 | data->args.fhandle = &data->fh; | |
3042 | data->args.stateid = &data->stateid; | |
fa178f29 | 3043 | data->args.bitmask = server->attr_bitmask; |
fe650407 TM |
3044 | nfs_copy_fh(&data->fh, NFS_FH(inode)); |
3045 | memcpy(&data->stateid, stateid, sizeof(data->stateid)); | |
fa178f29 TM |
3046 | data->res.fattr = &data->fattr; |
3047 | data->res.server = server; | |
fe650407 | 3048 | data->cred = get_rpccred(cred); |
26e976a8 | 3049 | data->timestamp = jiffies; |
fe650407 TM |
3050 | data->rpc_status = 0; |
3051 | ||
3052 | task = rpc_run_task(NFS_CLIENT(inode), RPC_TASK_ASYNC, &nfs4_delegreturn_ops, data); | |
7a1218a2 | 3053 | if (IS_ERR(task)) |
fe650407 | 3054 | return PTR_ERR(task); |
fe650407 | 3055 | status = nfs4_wait_for_completion_rpc_task(task); |
fa178f29 | 3056 | if (status == 0) { |
fe650407 | 3057 | status = data->rpc_status; |
fa178f29 TM |
3058 | if (status == 0) |
3059 | nfs_post_op_update_inode(inode, &data->fattr); | |
3060 | } | |
e6b3c4db | 3061 | rpc_put_task(task); |
fe650407 | 3062 | return status; |
1da177e4 LT |
3063 | } |
3064 | ||
3065 | int nfs4_proc_delegreturn(struct inode *inode, struct rpc_cred *cred, const nfs4_stateid *stateid) | |
3066 | { | |
3067 | struct nfs_server *server = NFS_SERVER(inode); | |
3068 | struct nfs4_exception exception = { }; | |
3069 | int err; | |
3070 | do { | |
3071 | err = _nfs4_proc_delegreturn(inode, cred, stateid); | |
3072 | switch (err) { | |
3073 | case -NFS4ERR_STALE_STATEID: | |
3074 | case -NFS4ERR_EXPIRED: | |
1da177e4 LT |
3075 | case 0: |
3076 | return 0; | |
3077 | } | |
3078 | err = nfs4_handle_exception(server, err, &exception); | |
3079 | } while (exception.retry); | |
3080 | return err; | |
3081 | } | |
3082 | ||
3083 | #define NFS4_LOCK_MINTIMEOUT (1 * HZ) | |
3084 | #define NFS4_LOCK_MAXTIMEOUT (30 * HZ) | |
3085 | ||
3086 | /* | |
3087 | * sleep, with exponential backoff, and retry the LOCK operation. | |
3088 | */ | |
3089 | static unsigned long | |
3090 | nfs4_set_lock_task_retry(unsigned long timeout) | |
3091 | { | |
041e0e3b | 3092 | schedule_timeout_interruptible(timeout); |
1da177e4 LT |
3093 | timeout <<= 1; |
3094 | if (timeout > NFS4_LOCK_MAXTIMEOUT) | |
3095 | return NFS4_LOCK_MAXTIMEOUT; | |
3096 | return timeout; | |
3097 | } | |
3098 | ||
1da177e4 LT |
3099 | static int _nfs4_proc_getlk(struct nfs4_state *state, int cmd, struct file_lock *request) |
3100 | { | |
3101 | struct inode *inode = state->inode; | |
3102 | struct nfs_server *server = NFS_SERVER(inode); | |
7539bbab | 3103 | struct nfs_client *clp = server->nfs_client; |
911d1aaf | 3104 | struct nfs_lockt_args arg = { |
1da177e4 | 3105 | .fh = NFS_FH(inode), |
911d1aaf | 3106 | .fl = request, |
1da177e4 | 3107 | }; |
911d1aaf TM |
3108 | struct nfs_lockt_res res = { |
3109 | .denied = request, | |
1da177e4 LT |
3110 | }; |
3111 | struct rpc_message msg = { | |
3112 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOCKT], | |
3113 | .rpc_argp = &arg, | |
3114 | .rpc_resp = &res, | |
3115 | .rpc_cred = state->owner->so_cred, | |
3116 | }; | |
1da177e4 LT |
3117 | struct nfs4_lock_state *lsp; |
3118 | int status; | |
3119 | ||
3120 | down_read(&clp->cl_sem); | |
911d1aaf | 3121 | arg.lock_owner.clientid = clp->cl_clientid; |
8d0a8a9d TM |
3122 | status = nfs4_set_lock_state(state, request); |
3123 | if (status != 0) | |
3124 | goto out; | |
3125 | lsp = request->fl_u.nfs4_fl.owner; | |
9f958ab8 | 3126 | arg.lock_owner.id = lsp->ls_id.id; |
1da177e4 | 3127 | status = rpc_call_sync(server->client, &msg, 0); |
911d1aaf TM |
3128 | switch (status) { |
3129 | case 0: | |
3130 | request->fl_type = F_UNLCK; | |
3131 | break; | |
3132 | case -NFS4ERR_DENIED: | |
3133 | status = 0; | |
1da177e4 | 3134 | } |
70cc6487 | 3135 | request->fl_ops->fl_release_private(request); |
8d0a8a9d | 3136 | out: |
1da177e4 LT |
3137 | up_read(&clp->cl_sem); |
3138 | return status; | |
3139 | } | |
3140 | ||
3141 | static int nfs4_proc_getlk(struct nfs4_state *state, int cmd, struct file_lock *request) | |
3142 | { | |
3143 | struct nfs4_exception exception = { }; | |
3144 | int err; | |
3145 | ||
3146 | do { | |
3147 | err = nfs4_handle_exception(NFS_SERVER(state->inode), | |
3148 | _nfs4_proc_getlk(state, cmd, request), | |
3149 | &exception); | |
3150 | } while (exception.retry); | |
3151 | return err; | |
3152 | } | |
3153 | ||
3154 | static int do_vfs_lock(struct file *file, struct file_lock *fl) | |
3155 | { | |
3156 | int res = 0; | |
3157 | switch (fl->fl_flags & (FL_POSIX|FL_FLOCK)) { | |
3158 | case FL_POSIX: | |
3159 | res = posix_lock_file_wait(file, fl); | |
3160 | break; | |
3161 | case FL_FLOCK: | |
3162 | res = flock_lock_file_wait(file, fl); | |
3163 | break; | |
3164 | default: | |
3165 | BUG(); | |
3166 | } | |
1da177e4 LT |
3167 | return res; |
3168 | } | |
3169 | ||
faf5f49c | 3170 | struct nfs4_unlockdata { |
911d1aaf TM |
3171 | struct nfs_locku_args arg; |
3172 | struct nfs_locku_res res; | |
faf5f49c TM |
3173 | struct nfs4_lock_state *lsp; |
3174 | struct nfs_open_context *ctx; | |
911d1aaf TM |
3175 | struct file_lock fl; |
3176 | const struct nfs_server *server; | |
26e976a8 | 3177 | unsigned long timestamp; |
faf5f49c TM |
3178 | }; |
3179 | ||
911d1aaf TM |
3180 | static struct nfs4_unlockdata *nfs4_alloc_unlockdata(struct file_lock *fl, |
3181 | struct nfs_open_context *ctx, | |
3182 | struct nfs4_lock_state *lsp, | |
3183 | struct nfs_seqid *seqid) | |
3184 | { | |
3185 | struct nfs4_unlockdata *p; | |
3186 | struct inode *inode = lsp->ls_state->inode; | |
3187 | ||
3188 | p = kmalloc(sizeof(*p), GFP_KERNEL); | |
3189 | if (p == NULL) | |
3190 | return NULL; | |
3191 | p->arg.fh = NFS_FH(inode); | |
3192 | p->arg.fl = &p->fl; | |
3193 | p->arg.seqid = seqid; | |
3194 | p->arg.stateid = &lsp->ls_stateid; | |
3195 | p->lsp = lsp; | |
3196 | atomic_inc(&lsp->ls_count); | |
3197 | /* Ensure we don't close file until we're done freeing locks! */ | |
3198 | p->ctx = get_nfs_open_context(ctx); | |
3199 | memcpy(&p->fl, fl, sizeof(p->fl)); | |
3200 | p->server = NFS_SERVER(inode); | |
3201 | return p; | |
3202 | } | |
3203 | ||
06f814a3 | 3204 | static void nfs4_locku_release_calldata(void *data) |
faf5f49c | 3205 | { |
963d8fe5 | 3206 | struct nfs4_unlockdata *calldata = data; |
911d1aaf | 3207 | nfs_free_seqid(calldata->arg.seqid); |
06f814a3 TM |
3208 | nfs4_put_lock_state(calldata->lsp); |
3209 | put_nfs_open_context(calldata->ctx); | |
3210 | kfree(calldata); | |
faf5f49c TM |
3211 | } |
3212 | ||
963d8fe5 | 3213 | static void nfs4_locku_done(struct rpc_task *task, void *data) |
faf5f49c | 3214 | { |
963d8fe5 | 3215 | struct nfs4_unlockdata *calldata = data; |
faf5f49c | 3216 | |
06f814a3 TM |
3217 | if (RPC_ASSASSINATED(task)) |
3218 | return; | |
911d1aaf | 3219 | nfs_increment_lock_seqid(task->tk_status, calldata->arg.seqid); |
faf5f49c TM |
3220 | switch (task->tk_status) { |
3221 | case 0: | |
3222 | memcpy(calldata->lsp->ls_stateid.data, | |
911d1aaf | 3223 | calldata->res.stateid.data, |
faf5f49c | 3224 | sizeof(calldata->lsp->ls_stateid.data)); |
26e976a8 | 3225 | renew_lease(calldata->server, calldata->timestamp); |
faf5f49c TM |
3226 | break; |
3227 | case -NFS4ERR_STALE_STATEID: | |
3228 | case -NFS4ERR_EXPIRED: | |
faf5f49c TM |
3229 | break; |
3230 | default: | |
a6a352e9 | 3231 | if (nfs4_async_handle_error(task, calldata->server) == -EAGAIN) |
faf5f49c | 3232 | rpc_restart_call(task); |
faf5f49c | 3233 | } |
faf5f49c TM |
3234 | } |
3235 | ||
4ce70ada | 3236 | static void nfs4_locku_prepare(struct rpc_task *task, void *data) |
faf5f49c | 3237 | { |
4ce70ada | 3238 | struct nfs4_unlockdata *calldata = data; |
1da177e4 LT |
3239 | struct rpc_message msg = { |
3240 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOCKU], | |
faf5f49c TM |
3241 | .rpc_argp = &calldata->arg, |
3242 | .rpc_resp = &calldata->res, | |
3243 | .rpc_cred = calldata->lsp->ls_state->owner->so_cred, | |
1da177e4 | 3244 | }; |
faf5f49c | 3245 | |
911d1aaf | 3246 | if (nfs_wait_on_sequence(calldata->arg.seqid, task) != 0) |
faf5f49c TM |
3247 | return; |
3248 | if ((calldata->lsp->ls_flags & NFS_LOCK_INITIALIZED) == 0) { | |
963d8fe5 TM |
3249 | /* Note: exit _without_ running nfs4_locku_done */ |
3250 | task->tk_action = NULL; | |
faf5f49c TM |
3251 | return; |
3252 | } | |
26e976a8 | 3253 | calldata->timestamp = jiffies; |
faf5f49c TM |
3254 | rpc_call_setup(task, &msg, 0); |
3255 | } | |
3256 | ||
963d8fe5 | 3257 | static const struct rpc_call_ops nfs4_locku_ops = { |
4ce70ada | 3258 | .rpc_call_prepare = nfs4_locku_prepare, |
963d8fe5 | 3259 | .rpc_call_done = nfs4_locku_done, |
06f814a3 | 3260 | .rpc_release = nfs4_locku_release_calldata, |
963d8fe5 TM |
3261 | }; |
3262 | ||
a5d16a4d TM |
3263 | static struct rpc_task *nfs4_do_unlck(struct file_lock *fl, |
3264 | struct nfs_open_context *ctx, | |
3265 | struct nfs4_lock_state *lsp, | |
3266 | struct nfs_seqid *seqid) | |
3267 | { | |
3268 | struct nfs4_unlockdata *data; | |
a5d16a4d | 3269 | |
137d6aca FF |
3270 | /* Ensure this is an unlock - when canceling a lock, the |
3271 | * canceled lock is passed in, and it won't be an unlock. | |
3272 | */ | |
3273 | fl->fl_type = F_UNLCK; | |
3274 | ||
a5d16a4d TM |
3275 | data = nfs4_alloc_unlockdata(fl, ctx, lsp, seqid); |
3276 | if (data == NULL) { | |
3277 | nfs_free_seqid(seqid); | |
3278 | return ERR_PTR(-ENOMEM); | |
3279 | } | |
3280 | ||
7a1218a2 | 3281 | return rpc_run_task(NFS_CLIENT(lsp->ls_state->inode), RPC_TASK_ASYNC, &nfs4_locku_ops, data); |
a5d16a4d TM |
3282 | } |
3283 | ||
faf5f49c TM |
3284 | static int nfs4_proc_unlck(struct nfs4_state *state, int cmd, struct file_lock *request) |
3285 | { | |
911d1aaf | 3286 | struct nfs_seqid *seqid; |
1da177e4 | 3287 | struct nfs4_lock_state *lsp; |
06f814a3 TM |
3288 | struct rpc_task *task; |
3289 | int status = 0; | |
faf5f49c | 3290 | |
8d0a8a9d | 3291 | status = nfs4_set_lock_state(state, request); |
9b073574 TM |
3292 | /* Unlock _before_ we do the RPC call */ |
3293 | request->fl_flags |= FL_EXISTS; | |
3294 | if (do_vfs_lock(request->fl_file, request) == -ENOENT) | |
3295 | goto out; | |
8d0a8a9d | 3296 | if (status != 0) |
9b073574 TM |
3297 | goto out; |
3298 | /* Is this a delegated lock? */ | |
3299 | if (test_bit(NFS_DELEGATED_STATE, &state->flags)) | |
3300 | goto out; | |
8d0a8a9d | 3301 | lsp = request->fl_u.nfs4_fl.owner; |
911d1aaf | 3302 | seqid = nfs_alloc_seqid(&lsp->ls_seqid); |
9b073574 | 3303 | status = -ENOMEM; |
911d1aaf | 3304 | if (seqid == NULL) |
9b073574 | 3305 | goto out; |
a5d16a4d TM |
3306 | task = nfs4_do_unlck(request, request->fl_file->private_data, lsp, seqid); |
3307 | status = PTR_ERR(task); | |
3308 | if (IS_ERR(task)) | |
9b073574 | 3309 | goto out; |
a5d16a4d | 3310 | status = nfs4_wait_for_completion_rpc_task(task); |
e6b3c4db | 3311 | rpc_put_task(task); |
9b073574 | 3312 | out: |
1da177e4 LT |
3313 | return status; |
3314 | } | |
3315 | ||
a5d16a4d TM |
3316 | struct nfs4_lockdata { |
3317 | struct nfs_lock_args arg; | |
3318 | struct nfs_lock_res res; | |
3319 | struct nfs4_lock_state *lsp; | |
3320 | struct nfs_open_context *ctx; | |
3321 | struct file_lock fl; | |
26e976a8 | 3322 | unsigned long timestamp; |
a5d16a4d TM |
3323 | int rpc_status; |
3324 | int cancelled; | |
3325 | }; | |
3326 | ||
3327 | static struct nfs4_lockdata *nfs4_alloc_lockdata(struct file_lock *fl, | |
3328 | struct nfs_open_context *ctx, struct nfs4_lock_state *lsp) | |
1da177e4 | 3329 | { |
a5d16a4d TM |
3330 | struct nfs4_lockdata *p; |
3331 | struct inode *inode = lsp->ls_state->inode; | |
1da177e4 | 3332 | struct nfs_server *server = NFS_SERVER(inode); |
a5d16a4d TM |
3333 | |
3334 | p = kzalloc(sizeof(*p), GFP_KERNEL); | |
3335 | if (p == NULL) | |
3336 | return NULL; | |
3337 | ||
3338 | p->arg.fh = NFS_FH(inode); | |
3339 | p->arg.fl = &p->fl; | |
3340 | p->arg.lock_seqid = nfs_alloc_seqid(&lsp->ls_seqid); | |
3341 | if (p->arg.lock_seqid == NULL) | |
3342 | goto out_free; | |
3343 | p->arg.lock_stateid = &lsp->ls_stateid; | |
7539bbab | 3344 | p->arg.lock_owner.clientid = server->nfs_client->cl_clientid; |
9f958ab8 | 3345 | p->arg.lock_owner.id = lsp->ls_id.id; |
a5d16a4d TM |
3346 | p->lsp = lsp; |
3347 | atomic_inc(&lsp->ls_count); | |
3348 | p->ctx = get_nfs_open_context(ctx); | |
3349 | memcpy(&p->fl, fl, sizeof(p->fl)); | |
3350 | return p; | |
3351 | out_free: | |
3352 | kfree(p); | |
3353 | return NULL; | |
3354 | } | |
3355 | ||
3356 | static void nfs4_lock_prepare(struct rpc_task *task, void *calldata) | |
3357 | { | |
3358 | struct nfs4_lockdata *data = calldata; | |
3359 | struct nfs4_state *state = data->lsp->ls_state; | |
3360 | struct nfs4_state_owner *sp = state->owner; | |
1da177e4 | 3361 | struct rpc_message msg = { |
a5d16a4d TM |
3362 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOCK], |
3363 | .rpc_argp = &data->arg, | |
3364 | .rpc_resp = &data->res, | |
3365 | .rpc_cred = sp->so_cred, | |
1da177e4 | 3366 | }; |
06735b34 | 3367 | |
a5d16a4d TM |
3368 | if (nfs_wait_on_sequence(data->arg.lock_seqid, task) != 0) |
3369 | return; | |
3370 | dprintk("%s: begin!\n", __FUNCTION__); | |
3371 | /* Do we need to do an open_to_lock_owner? */ | |
3372 | if (!(data->arg.lock_seqid->sequence->flags & NFS_SEQID_CONFIRMED)) { | |
3373 | data->arg.open_seqid = nfs_alloc_seqid(&sp->so_seqid); | |
3374 | if (data->arg.open_seqid == NULL) { | |
3375 | data->rpc_status = -ENOMEM; | |
3376 | task->tk_action = NULL; | |
06735b34 | 3377 | goto out; |
8d0a8a9d | 3378 | } |
a5d16a4d TM |
3379 | data->arg.open_stateid = &state->stateid; |
3380 | data->arg.new_lock_owner = 1; | |
3381 | } | |
26e976a8 | 3382 | data->timestamp = jiffies; |
a5d16a4d | 3383 | rpc_call_setup(task, &msg, 0); |
06735b34 | 3384 | out: |
a5d16a4d TM |
3385 | dprintk("%s: done!, ret = %d\n", __FUNCTION__, data->rpc_status); |
3386 | } | |
3387 | ||
3388 | static void nfs4_lock_done(struct rpc_task *task, void *calldata) | |
3389 | { | |
3390 | struct nfs4_lockdata *data = calldata; | |
3391 | ||
3392 | dprintk("%s: begin!\n", __FUNCTION__); | |
3393 | ||
3394 | data->rpc_status = task->tk_status; | |
3395 | if (RPC_ASSASSINATED(task)) | |
3396 | goto out; | |
3397 | if (data->arg.new_lock_owner != 0) { | |
3398 | nfs_increment_open_seqid(data->rpc_status, data->arg.open_seqid); | |
3399 | if (data->rpc_status == 0) | |
3400 | nfs_confirm_seqid(&data->lsp->ls_seqid, 0); | |
3401 | else | |
3402 | goto out; | |
3403 | } | |
3404 | if (data->rpc_status == 0) { | |
3405 | memcpy(data->lsp->ls_stateid.data, data->res.stateid.data, | |
3406 | sizeof(data->lsp->ls_stateid.data)); | |
3407 | data->lsp->ls_flags |= NFS_LOCK_INITIALIZED; | |
88be9f99 | 3408 | renew_lease(NFS_SERVER(data->ctx->path.dentry->d_inode), data->timestamp); |
a5d16a4d TM |
3409 | } |
3410 | nfs_increment_lock_seqid(data->rpc_status, data->arg.lock_seqid); | |
3411 | out: | |
3412 | dprintk("%s: done, ret = %d!\n", __FUNCTION__, data->rpc_status); | |
3413 | } | |
3414 | ||
3415 | static void nfs4_lock_release(void *calldata) | |
3416 | { | |
3417 | struct nfs4_lockdata *data = calldata; | |
3418 | ||
3419 | dprintk("%s: begin!\n", __FUNCTION__); | |
3420 | if (data->arg.open_seqid != NULL) | |
3421 | nfs_free_seqid(data->arg.open_seqid); | |
3422 | if (data->cancelled != 0) { | |
3423 | struct rpc_task *task; | |
3424 | task = nfs4_do_unlck(&data->fl, data->ctx, data->lsp, | |
3425 | data->arg.lock_seqid); | |
3426 | if (!IS_ERR(task)) | |
e6b3c4db | 3427 | rpc_put_task(task); |
a5d16a4d TM |
3428 | dprintk("%s: cancelling lock!\n", __FUNCTION__); |
3429 | } else | |
3430 | nfs_free_seqid(data->arg.lock_seqid); | |
3431 | nfs4_put_lock_state(data->lsp); | |
3432 | put_nfs_open_context(data->ctx); | |
3433 | kfree(data); | |
3434 | dprintk("%s: done!\n", __FUNCTION__); | |
3435 | } | |
3436 | ||
3437 | static const struct rpc_call_ops nfs4_lock_ops = { | |
3438 | .rpc_call_prepare = nfs4_lock_prepare, | |
3439 | .rpc_call_done = nfs4_lock_done, | |
3440 | .rpc_release = nfs4_lock_release, | |
3441 | }; | |
3442 | ||
3443 | static int _nfs4_do_setlk(struct nfs4_state *state, int cmd, struct file_lock *fl, int reclaim) | |
3444 | { | |
3445 | struct nfs4_lockdata *data; | |
3446 | struct rpc_task *task; | |
3447 | int ret; | |
3448 | ||
3449 | dprintk("%s: begin!\n", __FUNCTION__); | |
3450 | data = nfs4_alloc_lockdata(fl, fl->fl_file->private_data, | |
3451 | fl->fl_u.nfs4_fl.owner); | |
3452 | if (data == NULL) | |
3453 | return -ENOMEM; | |
3454 | if (IS_SETLKW(cmd)) | |
3455 | data->arg.block = 1; | |
3456 | if (reclaim != 0) | |
3457 | data->arg.reclaim = 1; | |
3458 | task = rpc_run_task(NFS_CLIENT(state->inode), RPC_TASK_ASYNC, | |
3459 | &nfs4_lock_ops, data); | |
7a1218a2 | 3460 | if (IS_ERR(task)) |
a5d16a4d | 3461 | return PTR_ERR(task); |
a5d16a4d TM |
3462 | ret = nfs4_wait_for_completion_rpc_task(task); |
3463 | if (ret == 0) { | |
3464 | ret = data->rpc_status; | |
3465 | if (ret == -NFS4ERR_DENIED) | |
3466 | ret = -EAGAIN; | |
3467 | } else | |
3468 | data->cancelled = 1; | |
e6b3c4db | 3469 | rpc_put_task(task); |
a5d16a4d TM |
3470 | dprintk("%s: done, ret = %d!\n", __FUNCTION__, ret); |
3471 | return ret; | |
1da177e4 LT |
3472 | } |
3473 | ||
3474 | static int nfs4_lock_reclaim(struct nfs4_state *state, struct file_lock *request) | |
3475 | { | |
202b50dc TM |
3476 | struct nfs_server *server = NFS_SERVER(state->inode); |
3477 | struct nfs4_exception exception = { }; | |
3478 | int err; | |
3479 | ||
3480 | do { | |
42a2d13e TM |
3481 | /* Cache the lock if possible... */ |
3482 | if (test_bit(NFS_DELEGATED_STATE, &state->flags) != 0) | |
3483 | return 0; | |
202b50dc TM |
3484 | err = _nfs4_do_setlk(state, F_SETLK, request, 1); |
3485 | if (err != -NFS4ERR_DELAY) | |
3486 | break; | |
3487 | nfs4_handle_exception(server, err, &exception); | |
3488 | } while (exception.retry); | |
3489 | return err; | |
1da177e4 LT |
3490 | } |
3491 | ||
3492 | static int nfs4_lock_expired(struct nfs4_state *state, struct file_lock *request) | |
3493 | { | |
202b50dc TM |
3494 | struct nfs_server *server = NFS_SERVER(state->inode); |
3495 | struct nfs4_exception exception = { }; | |
3496 | int err; | |
3497 | ||
6bfc93ef TM |
3498 | err = nfs4_set_lock_state(state, request); |
3499 | if (err != 0) | |
3500 | return err; | |
202b50dc | 3501 | do { |
42a2d13e TM |
3502 | if (test_bit(NFS_DELEGATED_STATE, &state->flags) != 0) |
3503 | return 0; | |
202b50dc TM |
3504 | err = _nfs4_do_setlk(state, F_SETLK, request, 0); |
3505 | if (err != -NFS4ERR_DELAY) | |
3506 | break; | |
3507 | nfs4_handle_exception(server, err, &exception); | |
3508 | } while (exception.retry); | |
3509 | return err; | |
1da177e4 LT |
3510 | } |
3511 | ||
3512 | static int _nfs4_proc_setlk(struct nfs4_state *state, int cmd, struct file_lock *request) | |
3513 | { | |
adfa6f98 | 3514 | struct nfs_client *clp = state->owner->so_client; |
01c3b861 | 3515 | unsigned char fl_flags = request->fl_flags; |
1da177e4 LT |
3516 | int status; |
3517 | ||
6bfc93ef | 3518 | /* Is this a delegated open? */ |
6bfc93ef TM |
3519 | status = nfs4_set_lock_state(state, request); |
3520 | if (status != 0) | |
3521 | goto out; | |
01c3b861 TM |
3522 | request->fl_flags |= FL_ACCESS; |
3523 | status = do_vfs_lock(request->fl_file, request); | |
3524 | if (status < 0) | |
3525 | goto out; | |
3526 | down_read(&clp->cl_sem); | |
3527 | if (test_bit(NFS_DELEGATED_STATE, &state->flags)) { | |
3528 | struct nfs_inode *nfsi = NFS_I(state->inode); | |
3529 | /* Yes: cache locks! */ | |
3530 | down_read(&nfsi->rwsem); | |
3531 | /* ...but avoid races with delegation recall... */ | |
3532 | if (test_bit(NFS_DELEGATED_STATE, &state->flags)) { | |
3533 | request->fl_flags = fl_flags & ~FL_SLEEP; | |
3534 | status = do_vfs_lock(request->fl_file, request); | |
3535 | up_read(&nfsi->rwsem); | |
3536 | goto out_unlock; | |
3537 | } | |
3538 | up_read(&nfsi->rwsem); | |
3539 | } | |
6bfc93ef TM |
3540 | status = _nfs4_do_setlk(state, cmd, request, 0); |
3541 | if (status != 0) | |
01c3b861 | 3542 | goto out_unlock; |
6bfc93ef | 3543 | /* Note: we always want to sleep here! */ |
01c3b861 | 3544 | request->fl_flags = fl_flags | FL_SLEEP; |
6bfc93ef TM |
3545 | if (do_vfs_lock(request->fl_file, request) < 0) |
3546 | printk(KERN_WARNING "%s: VFS is out of sync with lock manager!\n", __FUNCTION__); | |
01c3b861 | 3547 | out_unlock: |
1da177e4 | 3548 | up_read(&clp->cl_sem); |
01c3b861 TM |
3549 | out: |
3550 | request->fl_flags = fl_flags; | |
1da177e4 LT |
3551 | return status; |
3552 | } | |
3553 | ||
3554 | static int nfs4_proc_setlk(struct nfs4_state *state, int cmd, struct file_lock *request) | |
3555 | { | |
3556 | struct nfs4_exception exception = { }; | |
3557 | int err; | |
3558 | ||
3559 | do { | |
3560 | err = nfs4_handle_exception(NFS_SERVER(state->inode), | |
3561 | _nfs4_proc_setlk(state, cmd, request), | |
3562 | &exception); | |
3563 | } while (exception.retry); | |
3564 | return err; | |
3565 | } | |
3566 | ||
3567 | static int | |
3568 | nfs4_proc_lock(struct file *filp, int cmd, struct file_lock *request) | |
3569 | { | |
3570 | struct nfs_open_context *ctx; | |
3571 | struct nfs4_state *state; | |
3572 | unsigned long timeout = NFS4_LOCK_MINTIMEOUT; | |
3573 | int status; | |
3574 | ||
3575 | /* verify open state */ | |
3576 | ctx = (struct nfs_open_context *)filp->private_data; | |
3577 | state = ctx->state; | |
3578 | ||
3579 | if (request->fl_start < 0 || request->fl_end < 0) | |
3580 | return -EINVAL; | |
3581 | ||
3582 | if (IS_GETLK(cmd)) | |
3583 | return nfs4_proc_getlk(state, F_GETLK, request); | |
3584 | ||
3585 | if (!(IS_SETLK(cmd) || IS_SETLKW(cmd))) | |
3586 | return -EINVAL; | |
3587 | ||
3588 | if (request->fl_type == F_UNLCK) | |
3589 | return nfs4_proc_unlck(state, cmd, request); | |
3590 | ||
3591 | do { | |
3592 | status = nfs4_proc_setlk(state, cmd, request); | |
3593 | if ((status != -EAGAIN) || IS_SETLK(cmd)) | |
3594 | break; | |
3595 | timeout = nfs4_set_lock_task_retry(timeout); | |
3596 | status = -ERESTARTSYS; | |
3597 | if (signalled()) | |
3598 | break; | |
3599 | } while(status < 0); | |
1da177e4 LT |
3600 | return status; |
3601 | } | |
3602 | ||
888e694c TM |
3603 | int nfs4_lock_delegation_recall(struct nfs4_state *state, struct file_lock *fl) |
3604 | { | |
3605 | struct nfs_server *server = NFS_SERVER(state->inode); | |
3606 | struct nfs4_exception exception = { }; | |
3607 | int err; | |
3608 | ||
3609 | err = nfs4_set_lock_state(state, fl); | |
3610 | if (err != 0) | |
3611 | goto out; | |
3612 | do { | |
3613 | err = _nfs4_do_setlk(state, F_SETLK, fl, 0); | |
3614 | if (err != -NFS4ERR_DELAY) | |
3615 | break; | |
3616 | err = nfs4_handle_exception(server, err, &exception); | |
3617 | } while (exception.retry); | |
3618 | out: | |
3619 | return err; | |
3620 | } | |
6b3b5496 | 3621 | |
aa1870af BF |
3622 | #define XATTR_NAME_NFSV4_ACL "system.nfs4_acl" |
3623 | ||
6b3b5496 BF |
3624 | int nfs4_setxattr(struct dentry *dentry, const char *key, const void *buf, |
3625 | size_t buflen, int flags) | |
3626 | { | |
4b580ee3 BF |
3627 | struct inode *inode = dentry->d_inode; |
3628 | ||
3629 | if (strcmp(key, XATTR_NAME_NFSV4_ACL) != 0) | |
3630 | return -EOPNOTSUPP; | |
3631 | ||
3632 | if (!S_ISREG(inode->i_mode) && | |
3633 | (!S_ISDIR(inode->i_mode) || inode->i_mode & S_ISVTX)) | |
3634 | return -EPERM; | |
3635 | ||
3636 | return nfs4_proc_set_acl(inode, buf, buflen); | |
6b3b5496 BF |
3637 | } |
3638 | ||
3639 | /* The getxattr man page suggests returning -ENODATA for unknown attributes, | |
3640 | * and that's what we'll do for e.g. user attributes that haven't been set. | |
3641 | * But we'll follow ext2/ext3's lead by returning -EOPNOTSUPP for unsupported | |
3642 | * attributes in kernel-managed attribute namespaces. */ | |
3643 | ssize_t nfs4_getxattr(struct dentry *dentry, const char *key, void *buf, | |
3644 | size_t buflen) | |
3645 | { | |
aa1870af BF |
3646 | struct inode *inode = dentry->d_inode; |
3647 | ||
3648 | if (strcmp(key, XATTR_NAME_NFSV4_ACL) != 0) | |
3649 | return -EOPNOTSUPP; | |
3650 | ||
3651 | return nfs4_proc_get_acl(inode, buf, buflen); | |
6b3b5496 BF |
3652 | } |
3653 | ||
3654 | ssize_t nfs4_listxattr(struct dentry *dentry, char *buf, size_t buflen) | |
3655 | { | |
aa1870af | 3656 | size_t len = strlen(XATTR_NAME_NFSV4_ACL) + 1; |
6b3b5496 | 3657 | |
096455a2 BF |
3658 | if (!nfs4_server_supports_acls(NFS_SERVER(dentry->d_inode))) |
3659 | return 0; | |
6b3b5496 BF |
3660 | if (buf && buflen < len) |
3661 | return -ERANGE; | |
3662 | if (buf) | |
aa1870af BF |
3663 | memcpy(buf, XATTR_NAME_NFSV4_ACL, len); |
3664 | return len; | |
6b3b5496 BF |
3665 | } |
3666 | ||
56659e99 | 3667 | int nfs4_proc_fs_locations(struct inode *dir, const struct qstr *name, |
7aaa0b3b | 3668 | struct nfs4_fs_locations *fs_locations, struct page *page) |
683b57b4 TM |
3669 | { |
3670 | struct nfs_server *server = NFS_SERVER(dir); | |
3671 | u32 bitmask[2] = { | |
361e624f MN |
3672 | [0] = FATTR4_WORD0_FSID | FATTR4_WORD0_FS_LOCATIONS, |
3673 | [1] = FATTR4_WORD1_MOUNTED_ON_FILEID, | |
683b57b4 TM |
3674 | }; |
3675 | struct nfs4_fs_locations_arg args = { | |
3676 | .dir_fh = NFS_FH(dir), | |
c228fd3a | 3677 | .name = name, |
683b57b4 TM |
3678 | .page = page, |
3679 | .bitmask = bitmask, | |
3680 | }; | |
3681 | struct rpc_message msg = { | |
3682 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_FS_LOCATIONS], | |
3683 | .rpc_argp = &args, | |
7aaa0b3b | 3684 | .rpc_resp = fs_locations, |
683b57b4 TM |
3685 | }; |
3686 | int status; | |
3687 | ||
3688 | dprintk("%s: start\n", __FUNCTION__); | |
c228fd3a | 3689 | nfs_fattr_init(&fs_locations->fattr); |
683b57b4 | 3690 | fs_locations->server = server; |
830b8e33 | 3691 | fs_locations->nlocations = 0; |
683b57b4 TM |
3692 | status = rpc_call_sync(server->client, &msg, 0); |
3693 | dprintk("%s: returned status = %d\n", __FUNCTION__, status); | |
3694 | return status; | |
3695 | } | |
3696 | ||
1da177e4 LT |
3697 | struct nfs4_state_recovery_ops nfs4_reboot_recovery_ops = { |
3698 | .recover_open = nfs4_open_reclaim, | |
3699 | .recover_lock = nfs4_lock_reclaim, | |
3700 | }; | |
3701 | ||
3702 | struct nfs4_state_recovery_ops nfs4_network_partition_recovery_ops = { | |
3703 | .recover_open = nfs4_open_expired, | |
3704 | .recover_lock = nfs4_lock_expired, | |
3705 | }; | |
3706 | ||
92e1d5be | 3707 | static const struct inode_operations nfs4_file_inode_operations = { |
6b3b5496 BF |
3708 | .permission = nfs_permission, |
3709 | .getattr = nfs_getattr, | |
3710 | .setattr = nfs_setattr, | |
3711 | .getxattr = nfs4_getxattr, | |
3712 | .setxattr = nfs4_setxattr, | |
3713 | .listxattr = nfs4_listxattr, | |
3714 | }; | |
3715 | ||
509de811 | 3716 | const struct nfs_rpc_ops nfs_v4_clientops = { |
1da177e4 LT |
3717 | .version = 4, /* protocol version */ |
3718 | .dentry_ops = &nfs4_dentry_operations, | |
3719 | .dir_inode_ops = &nfs4_dir_inode_operations, | |
6b3b5496 | 3720 | .file_inode_ops = &nfs4_file_inode_operations, |
1da177e4 LT |
3721 | .getroot = nfs4_proc_get_root, |
3722 | .getattr = nfs4_proc_getattr, | |
3723 | .setattr = nfs4_proc_setattr, | |
2b3de441 | 3724 | .lookupfh = nfs4_proc_lookupfh, |
1da177e4 LT |
3725 | .lookup = nfs4_proc_lookup, |
3726 | .access = nfs4_proc_access, | |
3727 | .readlink = nfs4_proc_readlink, | |
1da177e4 LT |
3728 | .create = nfs4_proc_create, |
3729 | .remove = nfs4_proc_remove, | |
3730 | .unlink_setup = nfs4_proc_unlink_setup, | |
3731 | .unlink_done = nfs4_proc_unlink_done, | |
3732 | .rename = nfs4_proc_rename, | |
3733 | .link = nfs4_proc_link, | |
3734 | .symlink = nfs4_proc_symlink, | |
3735 | .mkdir = nfs4_proc_mkdir, | |
3736 | .rmdir = nfs4_proc_remove, | |
3737 | .readdir = nfs4_proc_readdir, | |
3738 | .mknod = nfs4_proc_mknod, | |
3739 | .statfs = nfs4_proc_statfs, | |
3740 | .fsinfo = nfs4_proc_fsinfo, | |
3741 | .pathconf = nfs4_proc_pathconf, | |
e9326dca | 3742 | .set_capabilities = nfs4_server_capabilities, |
1da177e4 LT |
3743 | .decode_dirent = nfs4_decode_dirent, |
3744 | .read_setup = nfs4_proc_read_setup, | |
ec06c096 | 3745 | .read_done = nfs4_read_done, |
1da177e4 | 3746 | .write_setup = nfs4_proc_write_setup, |
788e7a89 | 3747 | .write_done = nfs4_write_done, |
1da177e4 | 3748 | .commit_setup = nfs4_proc_commit_setup, |
788e7a89 | 3749 | .commit_done = nfs4_commit_done, |
02a913a7 TM |
3750 | .file_open = nfs_open, |
3751 | .file_release = nfs_release, | |
1da177e4 | 3752 | .lock = nfs4_proc_lock, |
e50a1c2e | 3753 | .clear_acl_cache = nfs4_zap_acl_attr, |
1da177e4 LT |
3754 | }; |
3755 | ||
3756 | /* | |
3757 | * Local variables: | |
3758 | * c-basic-offset: 8 | |
3759 | * End: | |
3760 | */ |