Commit | Line | Data |
---|---|---|
1da177e4 LT |
1 | /* |
2 | * fs/nfs/nfs4proc.c | |
3 | * | |
4 | * Client-side procedure declarations for NFSv4. | |
5 | * | |
6 | * Copyright (c) 2002 The Regents of the University of Michigan. | |
7 | * All rights reserved. | |
8 | * | |
9 | * Kendrick Smith <kmsmith@umich.edu> | |
10 | * Andy Adamson <andros@umich.edu> | |
11 | * | |
12 | * Redistribution and use in source and binary forms, with or without | |
13 | * modification, are permitted provided that the following conditions | |
14 | * are met: | |
15 | * | |
16 | * 1. Redistributions of source code must retain the above copyright | |
17 | * notice, this list of conditions and the following disclaimer. | |
18 | * 2. Redistributions in binary form must reproduce the above copyright | |
19 | * notice, this list of conditions and the following disclaimer in the | |
20 | * documentation and/or other materials provided with the distribution. | |
21 | * 3. Neither the name of the University nor the names of its | |
22 | * contributors may be used to endorse or promote products derived | |
23 | * from this software without specific prior written permission. | |
24 | * | |
25 | * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED | |
26 | * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF | |
27 | * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE | |
28 | * DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE | |
29 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR | |
30 | * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF | |
31 | * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR | |
32 | * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF | |
33 | * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING | |
34 | * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS | |
35 | * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |
36 | */ | |
37 | ||
38 | #include <linux/mm.h> | |
39 | #include <linux/utsname.h> | |
40 | #include <linux/delay.h> | |
41 | #include <linux/errno.h> | |
42 | #include <linux/string.h> | |
43 | #include <linux/sunrpc/clnt.h> | |
44 | #include <linux/nfs.h> | |
45 | #include <linux/nfs4.h> | |
46 | #include <linux/nfs_fs.h> | |
47 | #include <linux/nfs_page.h> | |
48 | #include <linux/smp_lock.h> | |
49 | #include <linux/namei.h> | |
02a913a7 | 50 | #include <linux/mount.h> |
1da177e4 | 51 | |
4ce79717 | 52 | #include "nfs4_fs.h" |
1da177e4 | 53 | #include "delegation.h" |
006ea73e | 54 | #include "iostat.h" |
1da177e4 LT |
55 | |
56 | #define NFSDBG_FACILITY NFSDBG_PROC | |
57 | ||
2066fe89 | 58 | #define NFS4_POLL_RETRY_MIN (HZ/10) |
1da177e4 LT |
59 | #define NFS4_POLL_RETRY_MAX (15*HZ) |
60 | ||
cdd4e68b | 61 | struct nfs4_opendata; |
864472e9 | 62 | static int _nfs4_proc_open(struct nfs4_opendata *data); |
1da177e4 | 63 | static int nfs4_do_fsinfo(struct nfs_server *, struct nfs_fh *, struct nfs_fsinfo *); |
faf5f49c | 64 | static int nfs4_async_handle_error(struct rpc_task *, const struct nfs_server *); |
faf5f49c | 65 | static int nfs4_handle_exception(const struct nfs_server *server, int errorcode, struct nfs4_exception *exception); |
adfa6f98 | 66 | static int nfs4_wait_clnt_recover(struct rpc_clnt *clnt, struct nfs_client *clp); |
9936781d TM |
67 | static int _nfs4_proc_lookup(struct inode *dir, const struct qstr *name, struct nfs_fh *fhandle, struct nfs_fattr *fattr); |
68 | static int _nfs4_proc_getattr(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fattr *fattr); | |
1da177e4 | 69 | |
1da177e4 LT |
70 | /* Prevent leaks of NFSv4 errors into userland */ |
71 | int nfs4_map_errors(int err) | |
72 | { | |
73 | if (err < -1000) { | |
74 | dprintk("%s could not handle NFSv4 error %d\n", | |
75 | __FUNCTION__, -err); | |
76 | return -EIO; | |
77 | } | |
78 | return err; | |
79 | } | |
80 | ||
81 | /* | |
82 | * This is our standard bitmap for GETATTR requests. | |
83 | */ | |
84 | const u32 nfs4_fattr_bitmap[2] = { | |
85 | FATTR4_WORD0_TYPE | |
86 | | FATTR4_WORD0_CHANGE | |
87 | | FATTR4_WORD0_SIZE | |
88 | | FATTR4_WORD0_FSID | |
89 | | FATTR4_WORD0_FILEID, | |
90 | FATTR4_WORD1_MODE | |
91 | | FATTR4_WORD1_NUMLINKS | |
92 | | FATTR4_WORD1_OWNER | |
93 | | FATTR4_WORD1_OWNER_GROUP | |
94 | | FATTR4_WORD1_RAWDEV | |
95 | | FATTR4_WORD1_SPACE_USED | |
96 | | FATTR4_WORD1_TIME_ACCESS | |
97 | | FATTR4_WORD1_TIME_METADATA | |
98 | | FATTR4_WORD1_TIME_MODIFY | |
99 | }; | |
100 | ||
101 | const u32 nfs4_statfs_bitmap[2] = { | |
102 | FATTR4_WORD0_FILES_AVAIL | |
103 | | FATTR4_WORD0_FILES_FREE | |
104 | | FATTR4_WORD0_FILES_TOTAL, | |
105 | FATTR4_WORD1_SPACE_AVAIL | |
106 | | FATTR4_WORD1_SPACE_FREE | |
107 | | FATTR4_WORD1_SPACE_TOTAL | |
108 | }; | |
109 | ||
4ce79717 | 110 | const u32 nfs4_pathconf_bitmap[2] = { |
1da177e4 LT |
111 | FATTR4_WORD0_MAXLINK |
112 | | FATTR4_WORD0_MAXNAME, | |
113 | 0 | |
114 | }; | |
115 | ||
116 | const u32 nfs4_fsinfo_bitmap[2] = { FATTR4_WORD0_MAXFILESIZE | |
117 | | FATTR4_WORD0_MAXREAD | |
118 | | FATTR4_WORD0_MAXWRITE | |
119 | | FATTR4_WORD0_LEASE_TIME, | |
120 | 0 | |
121 | }; | |
122 | ||
830b8e33 MN |
123 | const u32 nfs4_fs_locations_bitmap[2] = { |
124 | FATTR4_WORD0_TYPE | |
125 | | FATTR4_WORD0_CHANGE | |
126 | | FATTR4_WORD0_SIZE | |
127 | | FATTR4_WORD0_FSID | |
128 | | FATTR4_WORD0_FILEID | |
129 | | FATTR4_WORD0_FS_LOCATIONS, | |
130 | FATTR4_WORD1_MODE | |
131 | | FATTR4_WORD1_NUMLINKS | |
132 | | FATTR4_WORD1_OWNER | |
133 | | FATTR4_WORD1_OWNER_GROUP | |
134 | | FATTR4_WORD1_RAWDEV | |
135 | | FATTR4_WORD1_SPACE_USED | |
136 | | FATTR4_WORD1_TIME_ACCESS | |
137 | | FATTR4_WORD1_TIME_METADATA | |
138 | | FATTR4_WORD1_TIME_MODIFY | |
139 | | FATTR4_WORD1_MOUNTED_ON_FILEID | |
140 | }; | |
141 | ||
bc4785cd | 142 | static void nfs4_setup_readdir(u64 cookie, __be32 *verifier, struct dentry *dentry, |
1da177e4 LT |
143 | struct nfs4_readdir_arg *readdir) |
144 | { | |
0dbb4c67 | 145 | __be32 *start, *p; |
1da177e4 LT |
146 | |
147 | BUG_ON(readdir->count < 80); | |
148 | if (cookie > 2) { | |
b7ef1956 | 149 | readdir->cookie = cookie; |
1da177e4 LT |
150 | memcpy(&readdir->verifier, verifier, sizeof(readdir->verifier)); |
151 | return; | |
152 | } | |
153 | ||
154 | readdir->cookie = 0; | |
155 | memset(&readdir->verifier, 0, sizeof(readdir->verifier)); | |
156 | if (cookie == 2) | |
157 | return; | |
158 | ||
159 | /* | |
160 | * NFSv4 servers do not return entries for '.' and '..' | |
161 | * Therefore, we fake these entries here. We let '.' | |
162 | * have cookie 0 and '..' have cookie 1. Note that | |
163 | * when talking to the server, we always send cookie 0 | |
164 | * instead of 1 or 2. | |
165 | */ | |
0dbb4c67 | 166 | start = p = kmap_atomic(*readdir->pages, KM_USER0); |
1da177e4 LT |
167 | |
168 | if (cookie == 0) { | |
169 | *p++ = xdr_one; /* next */ | |
170 | *p++ = xdr_zero; /* cookie, first word */ | |
171 | *p++ = xdr_one; /* cookie, second word */ | |
172 | *p++ = xdr_one; /* entry len */ | |
173 | memcpy(p, ".\0\0\0", 4); /* entry */ | |
174 | p++; | |
175 | *p++ = xdr_one; /* bitmap length */ | |
176 | *p++ = htonl(FATTR4_WORD0_FILEID); /* bitmap */ | |
177 | *p++ = htonl(8); /* attribute buffer length */ | |
4e769b93 | 178 | p = xdr_encode_hyper(p, NFS_FILEID(dentry->d_inode)); |
1da177e4 LT |
179 | } |
180 | ||
181 | *p++ = xdr_one; /* next */ | |
182 | *p++ = xdr_zero; /* cookie, first word */ | |
183 | *p++ = xdr_two; /* cookie, second word */ | |
184 | *p++ = xdr_two; /* entry len */ | |
185 | memcpy(p, "..\0\0", 4); /* entry */ | |
186 | p++; | |
187 | *p++ = xdr_one; /* bitmap length */ | |
188 | *p++ = htonl(FATTR4_WORD0_FILEID); /* bitmap */ | |
189 | *p++ = htonl(8); /* attribute buffer length */ | |
4e769b93 | 190 | p = xdr_encode_hyper(p, NFS_FILEID(dentry->d_parent->d_inode)); |
1da177e4 LT |
191 | |
192 | readdir->pgbase = (char *)p - (char *)start; | |
193 | readdir->count -= readdir->pgbase; | |
194 | kunmap_atomic(start, KM_USER0); | |
195 | } | |
196 | ||
26e976a8 | 197 | static void renew_lease(const struct nfs_server *server, unsigned long timestamp) |
1da177e4 | 198 | { |
7539bbab | 199 | struct nfs_client *clp = server->nfs_client; |
1da177e4 LT |
200 | spin_lock(&clp->cl_lock); |
201 | if (time_before(clp->cl_last_renewal,timestamp)) | |
202 | clp->cl_last_renewal = timestamp; | |
203 | spin_unlock(&clp->cl_lock); | |
204 | } | |
205 | ||
38478b24 | 206 | static void update_changeattr(struct inode *dir, struct nfs4_change_info *cinfo) |
1da177e4 | 207 | { |
38478b24 | 208 | struct nfs_inode *nfsi = NFS_I(dir); |
1da177e4 | 209 | |
38478b24 | 210 | spin_lock(&dir->i_lock); |
40d24704 TM |
211 | nfsi->cache_validity |= NFS_INO_INVALID_ATTR|NFS_INO_REVAL_PAGECACHE|NFS_INO_INVALID_DATA; |
212 | if (!cinfo->atomic || cinfo->before != nfsi->change_attr) | |
bfc69a45 | 213 | nfs_force_lookup_revalidate(dir); |
40d24704 | 214 | nfsi->change_attr = cinfo->after; |
38478b24 | 215 | spin_unlock(&dir->i_lock); |
1da177e4 LT |
216 | } |
217 | ||
e56e0b78 | 218 | struct nfs4_opendata { |
c6d00e63 | 219 | struct kref kref; |
e56e0b78 TM |
220 | struct nfs_openargs o_arg; |
221 | struct nfs_openres o_res; | |
cdd4e68b TM |
222 | struct nfs_open_confirmargs c_arg; |
223 | struct nfs_open_confirmres c_res; | |
e56e0b78 TM |
224 | struct nfs_fattr f_attr; |
225 | struct nfs_fattr dir_attr; | |
ad389da7 | 226 | struct path path; |
e56e0b78 TM |
227 | struct dentry *dir; |
228 | struct nfs4_state_owner *owner; | |
aac00a8d | 229 | struct nfs4_state *state; |
e56e0b78 | 230 | struct iattr attrs; |
26e976a8 | 231 | unsigned long timestamp; |
3e309914 | 232 | unsigned int rpc_done : 1; |
24ac23ab TM |
233 | int rpc_status; |
234 | int cancelled; | |
e56e0b78 TM |
235 | }; |
236 | ||
2ced46c2 TM |
237 | |
238 | static void nfs4_init_opendata_res(struct nfs4_opendata *p) | |
239 | { | |
240 | p->o_res.f_attr = &p->f_attr; | |
241 | p->o_res.dir_attr = &p->dir_attr; | |
242 | p->o_res.server = p->o_arg.server; | |
243 | nfs_fattr_init(&p->f_attr); | |
244 | nfs_fattr_init(&p->dir_attr); | |
245 | } | |
246 | ||
ad389da7 | 247 | static struct nfs4_opendata *nfs4_opendata_alloc(struct path *path, |
e56e0b78 TM |
248 | struct nfs4_state_owner *sp, int flags, |
249 | const struct iattr *attrs) | |
250 | { | |
ad389da7 | 251 | struct dentry *parent = dget_parent(path->dentry); |
e56e0b78 TM |
252 | struct inode *dir = parent->d_inode; |
253 | struct nfs_server *server = NFS_SERVER(dir); | |
254 | struct nfs4_opendata *p; | |
255 | ||
256 | p = kzalloc(sizeof(*p), GFP_KERNEL); | |
257 | if (p == NULL) | |
258 | goto err; | |
259 | p->o_arg.seqid = nfs_alloc_seqid(&sp->so_seqid); | |
260 | if (p->o_arg.seqid == NULL) | |
261 | goto err_free; | |
ad389da7 TM |
262 | p->path.mnt = mntget(path->mnt); |
263 | p->path.dentry = dget(path->dentry); | |
e56e0b78 TM |
264 | p->dir = parent; |
265 | p->owner = sp; | |
266 | atomic_inc(&sp->so_count); | |
267 | p->o_arg.fh = NFS_FH(dir); | |
268 | p->o_arg.open_flags = flags, | |
7539bbab | 269 | p->o_arg.clientid = server->nfs_client->cl_clientid; |
9f958ab8 | 270 | p->o_arg.id = sp->so_owner_id.id; |
ad389da7 | 271 | p->o_arg.name = &p->path.dentry->d_name; |
e56e0b78 TM |
272 | p->o_arg.server = server; |
273 | p->o_arg.bitmask = server->attr_bitmask; | |
274 | p->o_arg.claim = NFS4_OPEN_CLAIM_NULL; | |
e56e0b78 TM |
275 | if (flags & O_EXCL) { |
276 | u32 *s = (u32 *) p->o_arg.u.verifier.data; | |
277 | s[0] = jiffies; | |
278 | s[1] = current->pid; | |
279 | } else if (flags & O_CREAT) { | |
280 | p->o_arg.u.attrs = &p->attrs; | |
281 | memcpy(&p->attrs, attrs, sizeof(p->attrs)); | |
282 | } | |
cdd4e68b TM |
283 | p->c_arg.fh = &p->o_res.fh; |
284 | p->c_arg.stateid = &p->o_res.stateid; | |
285 | p->c_arg.seqid = p->o_arg.seqid; | |
2ced46c2 | 286 | nfs4_init_opendata_res(p); |
c6d00e63 | 287 | kref_init(&p->kref); |
e56e0b78 TM |
288 | return p; |
289 | err_free: | |
290 | kfree(p); | |
291 | err: | |
292 | dput(parent); | |
293 | return NULL; | |
294 | } | |
295 | ||
c6d00e63 | 296 | static void nfs4_opendata_free(struct kref *kref) |
e56e0b78 | 297 | { |
c6d00e63 TM |
298 | struct nfs4_opendata *p = container_of(kref, |
299 | struct nfs4_opendata, kref); | |
300 | ||
301 | nfs_free_seqid(p->o_arg.seqid); | |
aac00a8d TM |
302 | if (p->state != NULL) |
303 | nfs4_put_open_state(p->state); | |
c6d00e63 TM |
304 | nfs4_put_state_owner(p->owner); |
305 | dput(p->dir); | |
306 | dput(p->path.dentry); | |
307 | mntput(p->path.mnt); | |
308 | kfree(p); | |
309 | } | |
310 | ||
311 | static void nfs4_opendata_put(struct nfs4_opendata *p) | |
312 | { | |
313 | if (p != NULL) | |
314 | kref_put(&p->kref, nfs4_opendata_free); | |
e56e0b78 TM |
315 | } |
316 | ||
06f814a3 TM |
317 | static int nfs4_wait_for_completion_rpc_task(struct rpc_task *task) |
318 | { | |
06f814a3 TM |
319 | int ret; |
320 | ||
06f814a3 | 321 | ret = rpc_wait_for_completion_task(task); |
06f814a3 TM |
322 | return ret; |
323 | } | |
324 | ||
6ee41268 TM |
325 | static int can_open_cached(struct nfs4_state *state, int mode) |
326 | { | |
327 | int ret = 0; | |
328 | switch (mode & (FMODE_READ|FMODE_WRITE|O_EXCL)) { | |
329 | case FMODE_READ: | |
330 | ret |= test_bit(NFS_O_RDONLY_STATE, &state->flags) != 0; | |
6ee41268 TM |
331 | break; |
332 | case FMODE_WRITE: | |
333 | ret |= test_bit(NFS_O_WRONLY_STATE, &state->flags) != 0; | |
6ee41268 TM |
334 | break; |
335 | case FMODE_READ|FMODE_WRITE: | |
336 | ret |= test_bit(NFS_O_RDWR_STATE, &state->flags) != 0; | |
337 | } | |
338 | return ret; | |
339 | } | |
340 | ||
aac00a8d TM |
341 | static int can_open_delegated(struct nfs_delegation *delegation, mode_t open_flags) |
342 | { | |
343 | if ((delegation->type & open_flags) != open_flags) | |
344 | return 0; | |
345 | if (delegation->flags & NFS_DELEGATION_NEED_RECLAIM) | |
346 | return 0; | |
347 | return 1; | |
348 | } | |
349 | ||
003707c7 | 350 | static void update_open_stateflags(struct nfs4_state *state, mode_t open_flags) |
e7616923 TM |
351 | { |
352 | switch (open_flags) { | |
353 | case FMODE_WRITE: | |
354 | state->n_wronly++; | |
355 | break; | |
356 | case FMODE_READ: | |
357 | state->n_rdonly++; | |
358 | break; | |
359 | case FMODE_READ|FMODE_WRITE: | |
360 | state->n_rdwr++; | |
361 | } | |
003707c7 TM |
362 | nfs4_state_set_mode_locked(state, state->state | open_flags); |
363 | } | |
364 | ||
365 | static void nfs_set_open_stateid_locked(struct nfs4_state *state, nfs4_stateid *stateid, int open_flags) | |
366 | { | |
367 | if (test_bit(NFS_DELEGATED_STATE, &state->flags) == 0) | |
368 | memcpy(state->stateid.data, stateid->data, sizeof(state->stateid.data)); | |
369 | memcpy(state->open_stateid.data, stateid->data, sizeof(state->open_stateid.data)); | |
370 | switch (open_flags) { | |
371 | case FMODE_READ: | |
372 | set_bit(NFS_O_RDONLY_STATE, &state->flags); | |
373 | break; | |
374 | case FMODE_WRITE: | |
375 | set_bit(NFS_O_WRONLY_STATE, &state->flags); | |
376 | break; | |
377 | case FMODE_READ|FMODE_WRITE: | |
378 | set_bit(NFS_O_RDWR_STATE, &state->flags); | |
379 | } | |
e7616923 TM |
380 | } |
381 | ||
003707c7 TM |
382 | static void nfs_set_open_stateid(struct nfs4_state *state, nfs4_stateid *stateid, int open_flags) |
383 | { | |
8bda4e4c | 384 | write_seqlock(&state->seqlock); |
003707c7 | 385 | nfs_set_open_stateid_locked(state, stateid, open_flags); |
8bda4e4c | 386 | write_sequnlock(&state->seqlock); |
003707c7 TM |
387 | } |
388 | ||
389 | static void update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stateid, nfs4_stateid *deleg_stateid, int open_flags) | |
1da177e4 | 390 | { |
1da177e4 | 391 | open_flags &= (FMODE_READ|FMODE_WRITE); |
8bda4e4c TM |
392 | /* |
393 | * Protect the call to nfs4_state_set_mode_locked and | |
394 | * serialise the stateid update | |
395 | */ | |
396 | write_seqlock(&state->seqlock); | |
003707c7 TM |
397 | if (deleg_stateid != NULL) { |
398 | memcpy(state->stateid.data, deleg_stateid->data, sizeof(state->stateid.data)); | |
399 | set_bit(NFS_DELEGATED_STATE, &state->flags); | |
400 | } | |
401 | if (open_stateid != NULL) | |
402 | nfs_set_open_stateid_locked(state, open_stateid, open_flags); | |
8bda4e4c TM |
403 | write_sequnlock(&state->seqlock); |
404 | spin_lock(&state->owner->so_lock); | |
e7616923 | 405 | update_open_stateflags(state, open_flags); |
ec073428 | 406 | spin_unlock(&state->owner->so_lock); |
1da177e4 LT |
407 | } |
408 | ||
aac00a8d TM |
409 | static void nfs4_return_incompatible_delegation(struct inode *inode, mode_t open_flags) |
410 | { | |
411 | struct nfs_delegation *delegation; | |
412 | ||
413 | rcu_read_lock(); | |
414 | delegation = rcu_dereference(NFS_I(inode)->delegation); | |
415 | if (delegation == NULL || (delegation->type & open_flags) == open_flags) { | |
416 | rcu_read_unlock(); | |
417 | return; | |
418 | } | |
419 | rcu_read_unlock(); | |
420 | nfs_inode_return_delegation(inode); | |
421 | } | |
422 | ||
6ee41268 | 423 | static struct nfs4_state *nfs4_try_open_cached(struct nfs4_opendata *opendata) |
aac00a8d TM |
424 | { |
425 | struct nfs4_state *state = opendata->state; | |
426 | struct nfs_inode *nfsi = NFS_I(state->inode); | |
427 | struct nfs_delegation *delegation; | |
428 | int open_mode = opendata->o_arg.open_flags & (FMODE_READ|FMODE_WRITE|O_EXCL); | |
429 | nfs4_stateid stateid; | |
430 | int ret = -EAGAIN; | |
431 | ||
432 | rcu_read_lock(); | |
433 | delegation = rcu_dereference(nfsi->delegation); | |
aac00a8d | 434 | for (;;) { |
6ee41268 TM |
435 | if (can_open_cached(state, open_mode)) { |
436 | spin_lock(&state->owner->so_lock); | |
437 | if (can_open_cached(state, open_mode)) { | |
438 | update_open_stateflags(state, open_mode); | |
439 | spin_unlock(&state->owner->so_lock); | |
440 | rcu_read_unlock(); | |
441 | goto out_return_state; | |
442 | } | |
443 | spin_unlock(&state->owner->so_lock); | |
444 | } | |
445 | if (delegation == NULL) | |
446 | break; | |
aac00a8d TM |
447 | if (!can_open_delegated(delegation, open_mode)) |
448 | break; | |
449 | /* Save the delegation */ | |
450 | memcpy(stateid.data, delegation->stateid.data, sizeof(stateid.data)); | |
451 | rcu_read_unlock(); | |
452 | lock_kernel(); | |
af22f94a | 453 | ret = nfs_may_open(state->inode, state->owner->so_cred, open_mode); |
aac00a8d TM |
454 | unlock_kernel(); |
455 | if (ret != 0) | |
456 | goto out; | |
457 | ret = -EAGAIN; | |
458 | rcu_read_lock(); | |
459 | delegation = rcu_dereference(nfsi->delegation); | |
6ee41268 | 460 | /* If no delegation, try a cached open */ |
aac00a8d | 461 | if (delegation == NULL) |
6ee41268 | 462 | continue; |
aac00a8d TM |
463 | /* Is the delegation still valid? */ |
464 | if (memcmp(stateid.data, delegation->stateid.data, sizeof(stateid.data)) != 0) | |
465 | continue; | |
466 | rcu_read_unlock(); | |
467 | update_open_stateid(state, NULL, &stateid, open_mode); | |
468 | goto out_return_state; | |
469 | } | |
aac00a8d TM |
470 | rcu_read_unlock(); |
471 | out: | |
472 | return ERR_PTR(ret); | |
473 | out_return_state: | |
474 | atomic_inc(&state->count); | |
475 | return state; | |
476 | } | |
477 | ||
24ac23ab TM |
478 | static struct nfs4_state *nfs4_opendata_to_nfs4_state(struct nfs4_opendata *data) |
479 | { | |
480 | struct inode *inode; | |
481 | struct nfs4_state *state = NULL; | |
003707c7 TM |
482 | struct nfs_delegation *delegation; |
483 | nfs4_stateid *deleg_stateid = NULL; | |
1b370bc2 | 484 | int ret; |
24ac23ab | 485 | |
aac00a8d | 486 | if (!data->rpc_done) { |
6ee41268 | 487 | state = nfs4_try_open_cached(data); |
aac00a8d TM |
488 | goto out; |
489 | } | |
490 | ||
1b370bc2 | 491 | ret = -EAGAIN; |
24ac23ab | 492 | if (!(data->f_attr.valid & NFS_ATTR_FATTR)) |
1b370bc2 | 493 | goto err; |
24ac23ab | 494 | inode = nfs_fhget(data->dir->d_sb, &data->o_res.fh, &data->f_attr); |
1b370bc2 | 495 | ret = PTR_ERR(inode); |
03f28e3a | 496 | if (IS_ERR(inode)) |
1b370bc2 TM |
497 | goto err; |
498 | ret = -ENOMEM; | |
24ac23ab TM |
499 | state = nfs4_get_open_state(inode, data->owner); |
500 | if (state == NULL) | |
1b370bc2 | 501 | goto err_put_inode; |
549d6ed5 | 502 | if (data->o_res.delegation_type != 0) { |
549d6ed5 TM |
503 | int delegation_flags = 0; |
504 | ||
003707c7 TM |
505 | rcu_read_lock(); |
506 | delegation = rcu_dereference(NFS_I(inode)->delegation); | |
507 | if (delegation) | |
508 | delegation_flags = delegation->flags; | |
509 | rcu_read_unlock(); | |
549d6ed5 TM |
510 | if (!(delegation_flags & NFS_DELEGATION_NEED_RECLAIM)) |
511 | nfs_inode_set_delegation(state->inode, | |
512 | data->owner->so_cred, | |
513 | &data->o_res); | |
514 | else | |
515 | nfs_inode_reclaim_delegation(state->inode, | |
516 | data->owner->so_cred, | |
517 | &data->o_res); | |
518 | } | |
003707c7 TM |
519 | rcu_read_lock(); |
520 | delegation = rcu_dereference(NFS_I(inode)->delegation); | |
521 | if (delegation != NULL) | |
522 | deleg_stateid = &delegation->stateid; | |
523 | update_open_stateid(state, &data->o_res.stateid, deleg_stateid, data->o_arg.open_flags); | |
524 | rcu_read_unlock(); | |
24ac23ab | 525 | iput(inode); |
aac00a8d | 526 | out: |
24ac23ab | 527 | return state; |
1b370bc2 TM |
528 | err_put_inode: |
529 | iput(inode); | |
530 | err: | |
531 | return ERR_PTR(ret); | |
24ac23ab TM |
532 | } |
533 | ||
864472e9 TM |
534 | static struct nfs_open_context *nfs4_state_find_open_context(struct nfs4_state *state) |
535 | { | |
536 | struct nfs_inode *nfsi = NFS_I(state->inode); | |
537 | struct nfs_open_context *ctx; | |
538 | ||
539 | spin_lock(&state->inode->i_lock); | |
540 | list_for_each_entry(ctx, &nfsi->open_files, list) { | |
541 | if (ctx->state != state) | |
542 | continue; | |
543 | get_nfs_open_context(ctx); | |
544 | spin_unlock(&state->inode->i_lock); | |
545 | return ctx; | |
546 | } | |
547 | spin_unlock(&state->inode->i_lock); | |
548 | return ERR_PTR(-ENOENT); | |
549 | } | |
550 | ||
6f220ed5 TM |
551 | static struct nfs4_opendata *nfs4_open_recoverdata_alloc(struct nfs_open_context *ctx, struct nfs4_state *state) |
552 | { | |
553 | struct nfs4_opendata *opendata; | |
554 | ||
555 | opendata = nfs4_opendata_alloc(&ctx->path, state->owner, 0, NULL); | |
556 | if (opendata == NULL) | |
557 | return ERR_PTR(-ENOMEM); | |
558 | opendata->state = state; | |
559 | atomic_inc(&state->count); | |
560 | return opendata; | |
561 | } | |
562 | ||
2ced46c2 | 563 | static int nfs4_open_recover_helper(struct nfs4_opendata *opendata, mode_t openflags, struct nfs4_state **res) |
864472e9 | 564 | { |
2ced46c2 | 565 | struct nfs4_state *newstate; |
864472e9 TM |
566 | int ret; |
567 | ||
568 | opendata->o_arg.open_flags = openflags; | |
2ced46c2 TM |
569 | memset(&opendata->o_res, 0, sizeof(opendata->o_res)); |
570 | memset(&opendata->c_res, 0, sizeof(opendata->c_res)); | |
571 | nfs4_init_opendata_res(opendata); | |
864472e9 TM |
572 | ret = _nfs4_proc_open(opendata); |
573 | if (ret != 0) | |
574 | return ret; | |
2ced46c2 | 575 | newstate = nfs4_opendata_to_nfs4_state(opendata); |
1b370bc2 TM |
576 | if (IS_ERR(newstate)) |
577 | return PTR_ERR(newstate); | |
578 | nfs4_close_state(&opendata->path, newstate, openflags); | |
2ced46c2 | 579 | *res = newstate; |
864472e9 TM |
580 | return 0; |
581 | } | |
582 | ||
583 | static int nfs4_open_recover(struct nfs4_opendata *opendata, struct nfs4_state *state) | |
584 | { | |
864472e9 | 585 | struct nfs4_state *newstate; |
864472e9 TM |
586 | int ret; |
587 | ||
588 | /* memory barrier prior to reading state->n_* */ | |
2ced46c2 | 589 | clear_bit(NFS_DELEGATED_STATE, &state->flags); |
864472e9 TM |
590 | smp_rmb(); |
591 | if (state->n_rdwr != 0) { | |
2ced46c2 | 592 | ret = nfs4_open_recover_helper(opendata, FMODE_READ|FMODE_WRITE, &newstate); |
864472e9 TM |
593 | if (ret != 0) |
594 | return ret; | |
2ced46c2 TM |
595 | if (newstate != state) |
596 | return -ESTALE; | |
864472e9 TM |
597 | } |
598 | if (state->n_wronly != 0) { | |
2ced46c2 | 599 | ret = nfs4_open_recover_helper(opendata, FMODE_WRITE, &newstate); |
864472e9 TM |
600 | if (ret != 0) |
601 | return ret; | |
2ced46c2 TM |
602 | if (newstate != state) |
603 | return -ESTALE; | |
864472e9 TM |
604 | } |
605 | if (state->n_rdonly != 0) { | |
2ced46c2 | 606 | ret = nfs4_open_recover_helper(opendata, FMODE_READ, &newstate); |
864472e9 TM |
607 | if (ret != 0) |
608 | return ret; | |
2ced46c2 TM |
609 | if (newstate != state) |
610 | return -ESTALE; | |
864472e9 | 611 | } |
1ac7e2fd TM |
612 | /* |
613 | * We may have performed cached opens for all three recoveries. | |
614 | * Check if we need to update the current stateid. | |
615 | */ | |
616 | if (test_bit(NFS_DELEGATED_STATE, &state->flags) == 0 && | |
617 | memcmp(state->stateid.data, state->open_stateid.data, sizeof(state->stateid.data)) != 0) { | |
8bda4e4c | 618 | write_seqlock(&state->seqlock); |
1ac7e2fd TM |
619 | if (test_bit(NFS_DELEGATED_STATE, &state->flags) == 0) |
620 | memcpy(state->stateid.data, state->open_stateid.data, sizeof(state->stateid.data)); | |
8bda4e4c | 621 | write_sequnlock(&state->seqlock); |
1ac7e2fd | 622 | } |
864472e9 TM |
623 | return 0; |
624 | } | |
625 | ||
1da177e4 LT |
626 | /* |
627 | * OPEN_RECLAIM: | |
628 | * reclaim state on the server after a reboot. | |
1da177e4 | 629 | */ |
539cd03a | 630 | static int _nfs4_do_open_reclaim(struct nfs_open_context *ctx, struct nfs4_state *state) |
1da177e4 | 631 | { |
1ac7e2fd | 632 | struct nfs_delegation *delegation; |
864472e9 TM |
633 | struct nfs4_opendata *opendata; |
634 | int delegation_type = 0; | |
1da177e4 LT |
635 | int status; |
636 | ||
6f220ed5 TM |
637 | opendata = nfs4_open_recoverdata_alloc(ctx, state); |
638 | if (IS_ERR(opendata)) | |
639 | return PTR_ERR(opendata); | |
864472e9 TM |
640 | opendata->o_arg.claim = NFS4_OPEN_CLAIM_PREVIOUS; |
641 | opendata->o_arg.fh = NFS_FH(state->inode); | |
1ac7e2fd TM |
642 | rcu_read_lock(); |
643 | delegation = rcu_dereference(NFS_I(state->inode)->delegation); | |
644 | if (delegation != NULL && (delegation->flags & NFS_DELEGATION_NEED_RECLAIM) != 0) | |
65bbf6bd | 645 | delegation_type = delegation->type; |
1ac7e2fd | 646 | rcu_read_unlock(); |
864472e9 TM |
647 | opendata->o_arg.u.delegation_type = delegation_type; |
648 | status = nfs4_open_recover(opendata, state); | |
c6d00e63 | 649 | nfs4_opendata_put(opendata); |
1da177e4 LT |
650 | return status; |
651 | } | |
652 | ||
539cd03a | 653 | static int nfs4_do_open_reclaim(struct nfs_open_context *ctx, struct nfs4_state *state) |
1da177e4 LT |
654 | { |
655 | struct nfs_server *server = NFS_SERVER(state->inode); | |
656 | struct nfs4_exception exception = { }; | |
657 | int err; | |
658 | do { | |
539cd03a | 659 | err = _nfs4_do_open_reclaim(ctx, state); |
202b50dc TM |
660 | if (err != -NFS4ERR_DELAY) |
661 | break; | |
662 | nfs4_handle_exception(server, err, &exception); | |
1da177e4 LT |
663 | } while (exception.retry); |
664 | return err; | |
665 | } | |
666 | ||
864472e9 TM |
667 | static int nfs4_open_reclaim(struct nfs4_state_owner *sp, struct nfs4_state *state) |
668 | { | |
669 | struct nfs_open_context *ctx; | |
670 | int ret; | |
671 | ||
672 | ctx = nfs4_state_find_open_context(state); | |
673 | if (IS_ERR(ctx)) | |
674 | return PTR_ERR(ctx); | |
539cd03a | 675 | ret = nfs4_do_open_reclaim(ctx, state); |
864472e9 TM |
676 | put_nfs_open_context(ctx); |
677 | return ret; | |
678 | } | |
679 | ||
13437e12 | 680 | static int _nfs4_open_delegation_recall(struct nfs_open_context *ctx, struct nfs4_state *state, const nfs4_stateid *stateid) |
1da177e4 | 681 | { |
e56e0b78 | 682 | struct nfs4_opendata *opendata; |
864472e9 | 683 | int ret; |
1da177e4 | 684 | |
6f220ed5 TM |
685 | opendata = nfs4_open_recoverdata_alloc(ctx, state); |
686 | if (IS_ERR(opendata)) | |
687 | return PTR_ERR(opendata); | |
e56e0b78 | 688 | opendata->o_arg.claim = NFS4_OPEN_CLAIM_DELEGATE_CUR; |
13437e12 | 689 | memcpy(opendata->o_arg.u.delegation.data, stateid->data, |
e56e0b78 | 690 | sizeof(opendata->o_arg.u.delegation.data)); |
864472e9 | 691 | ret = nfs4_open_recover(opendata, state); |
c6d00e63 | 692 | nfs4_opendata_put(opendata); |
864472e9 | 693 | return ret; |
1da177e4 LT |
694 | } |
695 | ||
13437e12 | 696 | int nfs4_open_delegation_recall(struct nfs_open_context *ctx, struct nfs4_state *state, const nfs4_stateid *stateid) |
1da177e4 LT |
697 | { |
698 | struct nfs4_exception exception = { }; | |
539cd03a | 699 | struct nfs_server *server = NFS_SERVER(state->inode); |
1da177e4 LT |
700 | int err; |
701 | do { | |
13437e12 | 702 | err = _nfs4_open_delegation_recall(ctx, state, stateid); |
1da177e4 LT |
703 | switch (err) { |
704 | case 0: | |
705 | return err; | |
706 | case -NFS4ERR_STALE_CLIENTID: | |
707 | case -NFS4ERR_STALE_STATEID: | |
708 | case -NFS4ERR_EXPIRED: | |
709 | /* Don't recall a delegation if it was lost */ | |
7539bbab | 710 | nfs4_schedule_state_recovery(server->nfs_client); |
1da177e4 LT |
711 | return err; |
712 | } | |
713 | err = nfs4_handle_exception(server, err, &exception); | |
714 | } while (exception.retry); | |
715 | return err; | |
716 | } | |
717 | ||
cdd4e68b TM |
718 | static void nfs4_open_confirm_done(struct rpc_task *task, void *calldata) |
719 | { | |
720 | struct nfs4_opendata *data = calldata; | |
721 | ||
722 | data->rpc_status = task->tk_status; | |
723 | if (RPC_ASSASSINATED(task)) | |
724 | return; | |
26e976a8 | 725 | if (data->rpc_status == 0) { |
cdd4e68b TM |
726 | memcpy(data->o_res.stateid.data, data->c_res.stateid.data, |
727 | sizeof(data->o_res.stateid.data)); | |
bb22629e | 728 | nfs_confirm_seqid(&data->owner->so_seqid, 0); |
26e976a8 | 729 | renew_lease(data->o_res.server, data->timestamp); |
3e309914 | 730 | data->rpc_done = 1; |
26e976a8 | 731 | } |
0f9f95e0 | 732 | nfs_increment_open_seqid(data->rpc_status, data->c_arg.seqid); |
cdd4e68b TM |
733 | } |
734 | ||
735 | static void nfs4_open_confirm_release(void *calldata) | |
736 | { | |
737 | struct nfs4_opendata *data = calldata; | |
738 | struct nfs4_state *state = NULL; | |
739 | ||
740 | /* If this request hasn't been cancelled, do nothing */ | |
741 | if (data->cancelled == 0) | |
742 | goto out_free; | |
743 | /* In case of error, no cleanup! */ | |
3e309914 | 744 | if (!data->rpc_done) |
cdd4e68b | 745 | goto out_free; |
cdd4e68b | 746 | state = nfs4_opendata_to_nfs4_state(data); |
1b370bc2 | 747 | if (!IS_ERR(state)) |
4a35bd41 | 748 | nfs4_close_state(&data->path, state, data->o_arg.open_flags); |
cdd4e68b | 749 | out_free: |
c6d00e63 | 750 | nfs4_opendata_put(data); |
cdd4e68b TM |
751 | } |
752 | ||
753 | static const struct rpc_call_ops nfs4_open_confirm_ops = { | |
cdd4e68b TM |
754 | .rpc_call_done = nfs4_open_confirm_done, |
755 | .rpc_release = nfs4_open_confirm_release, | |
756 | }; | |
757 | ||
758 | /* | |
759 | * Note: On error, nfs4_proc_open_confirm will free the struct nfs4_opendata | |
760 | */ | |
761 | static int _nfs4_proc_open_confirm(struct nfs4_opendata *data) | |
762 | { | |
763 | struct nfs_server *server = NFS_SERVER(data->dir->d_inode); | |
764 | struct rpc_task *task; | |
5138fde0 TM |
765 | struct rpc_message msg = { |
766 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN_CONFIRM], | |
767 | .rpc_argp = &data->c_arg, | |
768 | .rpc_resp = &data->c_res, | |
769 | .rpc_cred = data->owner->so_cred, | |
770 | }; | |
c970aa85 TM |
771 | struct rpc_task_setup task_setup_data = { |
772 | .rpc_client = server->client, | |
5138fde0 | 773 | .rpc_message = &msg, |
c970aa85 TM |
774 | .callback_ops = &nfs4_open_confirm_ops, |
775 | .callback_data = data, | |
776 | .flags = RPC_TASK_ASYNC, | |
777 | }; | |
1da177e4 LT |
778 | int status; |
779 | ||
c6d00e63 | 780 | kref_get(&data->kref); |
3e309914 TM |
781 | data->rpc_done = 0; |
782 | data->rpc_status = 0; | |
5138fde0 | 783 | data->timestamp = jiffies; |
c970aa85 | 784 | task = rpc_run_task(&task_setup_data); |
7a1218a2 | 785 | if (IS_ERR(task)) |
cdd4e68b | 786 | return PTR_ERR(task); |
cdd4e68b TM |
787 | status = nfs4_wait_for_completion_rpc_task(task); |
788 | if (status != 0) { | |
789 | data->cancelled = 1; | |
790 | smp_wmb(); | |
791 | } else | |
792 | status = data->rpc_status; | |
e6b3c4db | 793 | rpc_put_task(task); |
1da177e4 LT |
794 | return status; |
795 | } | |
796 | ||
24ac23ab | 797 | static void nfs4_open_prepare(struct rpc_task *task, void *calldata) |
1da177e4 | 798 | { |
24ac23ab TM |
799 | struct nfs4_opendata *data = calldata; |
800 | struct nfs4_state_owner *sp = data->owner; | |
5138fde0 | 801 | |
24ac23ab TM |
802 | if (nfs_wait_on_sequence(data->o_arg.seqid, task) != 0) |
803 | return; | |
aac00a8d TM |
804 | /* |
805 | * Check if we still need to send an OPEN call, or if we can use | |
806 | * a delegation instead. | |
807 | */ | |
808 | if (data->state != NULL) { | |
809 | struct nfs_delegation *delegation; | |
810 | ||
6ee41268 TM |
811 | if (can_open_cached(data->state, data->o_arg.open_flags & (FMODE_READ|FMODE_WRITE|O_EXCL))) |
812 | goto out_no_action; | |
aac00a8d TM |
813 | rcu_read_lock(); |
814 | delegation = rcu_dereference(NFS_I(data->state->inode)->delegation); | |
815 | if (delegation != NULL && | |
816 | (delegation->flags & NFS_DELEGATION_NEED_RECLAIM) == 0) { | |
817 | rcu_read_unlock(); | |
6ee41268 | 818 | goto out_no_action; |
aac00a8d TM |
819 | } |
820 | rcu_read_unlock(); | |
821 | } | |
24ac23ab | 822 | /* Update sequence id. */ |
9f958ab8 | 823 | data->o_arg.id = sp->so_owner_id.id; |
24ac23ab | 824 | data->o_arg.clientid = sp->so_client->cl_clientid; |
6f220ed5 | 825 | if (data->o_arg.claim == NFS4_OPEN_CLAIM_PREVIOUS) { |
5138fde0 | 826 | task->tk_msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN_NOATTR]; |
6f220ed5 TM |
827 | nfs_copy_fh(&data->o_res.fh, data->o_arg.fh); |
828 | } | |
26e976a8 | 829 | data->timestamp = jiffies; |
5138fde0 | 830 | rpc_call_start(task); |
6ee41268 TM |
831 | return; |
832 | out_no_action: | |
833 | task->tk_action = NULL; | |
834 | ||
24ac23ab | 835 | } |
1da177e4 | 836 | |
24ac23ab TM |
837 | static void nfs4_open_done(struct rpc_task *task, void *calldata) |
838 | { | |
839 | struct nfs4_opendata *data = calldata; | |
1da177e4 | 840 | |
24ac23ab TM |
841 | data->rpc_status = task->tk_status; |
842 | if (RPC_ASSASSINATED(task)) | |
843 | return; | |
844 | if (task->tk_status == 0) { | |
845 | switch (data->o_res.f_attr->mode & S_IFMT) { | |
6f926b5b TM |
846 | case S_IFREG: |
847 | break; | |
848 | case S_IFLNK: | |
24ac23ab | 849 | data->rpc_status = -ELOOP; |
6f926b5b TM |
850 | break; |
851 | case S_IFDIR: | |
24ac23ab | 852 | data->rpc_status = -EISDIR; |
6f926b5b TM |
853 | break; |
854 | default: | |
24ac23ab | 855 | data->rpc_status = -ENOTDIR; |
6f926b5b | 856 | } |
26e976a8 | 857 | renew_lease(data->o_res.server, data->timestamp); |
0f9f95e0 TM |
858 | if (!(data->o_res.rflags & NFS4_OPEN_RESULT_CONFIRM)) |
859 | nfs_confirm_seqid(&data->owner->so_seqid, 0); | |
6f926b5b | 860 | } |
24ac23ab | 861 | nfs_increment_open_seqid(data->rpc_status, data->o_arg.seqid); |
3e309914 | 862 | data->rpc_done = 1; |
24ac23ab | 863 | } |
6f926b5b | 864 | |
24ac23ab TM |
865 | static void nfs4_open_release(void *calldata) |
866 | { | |
867 | struct nfs4_opendata *data = calldata; | |
868 | struct nfs4_state *state = NULL; | |
869 | ||
870 | /* If this request hasn't been cancelled, do nothing */ | |
871 | if (data->cancelled == 0) | |
872 | goto out_free; | |
873 | /* In case of error, no cleanup! */ | |
3e309914 | 874 | if (data->rpc_status != 0 || !data->rpc_done) |
24ac23ab TM |
875 | goto out_free; |
876 | /* In case we need an open_confirm, no cleanup! */ | |
877 | if (data->o_res.rflags & NFS4_OPEN_RESULT_CONFIRM) | |
878 | goto out_free; | |
24ac23ab | 879 | state = nfs4_opendata_to_nfs4_state(data); |
1b370bc2 | 880 | if (!IS_ERR(state)) |
4a35bd41 | 881 | nfs4_close_state(&data->path, state, data->o_arg.open_flags); |
24ac23ab | 882 | out_free: |
c6d00e63 | 883 | nfs4_opendata_put(data); |
24ac23ab TM |
884 | } |
885 | ||
886 | static const struct rpc_call_ops nfs4_open_ops = { | |
887 | .rpc_call_prepare = nfs4_open_prepare, | |
888 | .rpc_call_done = nfs4_open_done, | |
889 | .rpc_release = nfs4_open_release, | |
890 | }; | |
891 | ||
892 | /* | |
893 | * Note: On error, nfs4_proc_open will free the struct nfs4_opendata | |
894 | */ | |
895 | static int _nfs4_proc_open(struct nfs4_opendata *data) | |
896 | { | |
897 | struct inode *dir = data->dir->d_inode; | |
898 | struct nfs_server *server = NFS_SERVER(dir); | |
899 | struct nfs_openargs *o_arg = &data->o_arg; | |
900 | struct nfs_openres *o_res = &data->o_res; | |
901 | struct rpc_task *task; | |
5138fde0 TM |
902 | struct rpc_message msg = { |
903 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN], | |
904 | .rpc_argp = o_arg, | |
905 | .rpc_resp = o_res, | |
906 | .rpc_cred = data->owner->so_cred, | |
907 | }; | |
c970aa85 TM |
908 | struct rpc_task_setup task_setup_data = { |
909 | .rpc_client = server->client, | |
5138fde0 | 910 | .rpc_message = &msg, |
c970aa85 TM |
911 | .callback_ops = &nfs4_open_ops, |
912 | .callback_data = data, | |
913 | .flags = RPC_TASK_ASYNC, | |
914 | }; | |
24ac23ab TM |
915 | int status; |
916 | ||
c6d00e63 | 917 | kref_get(&data->kref); |
3e309914 TM |
918 | data->rpc_done = 0; |
919 | data->rpc_status = 0; | |
2ced46c2 | 920 | data->cancelled = 0; |
c970aa85 | 921 | task = rpc_run_task(&task_setup_data); |
7a1218a2 | 922 | if (IS_ERR(task)) |
24ac23ab | 923 | return PTR_ERR(task); |
24ac23ab TM |
924 | status = nfs4_wait_for_completion_rpc_task(task); |
925 | if (status != 0) { | |
926 | data->cancelled = 1; | |
927 | smp_wmb(); | |
928 | } else | |
929 | status = data->rpc_status; | |
e6b3c4db | 930 | rpc_put_task(task); |
3e309914 | 931 | if (status != 0 || !data->rpc_done) |
24ac23ab TM |
932 | return status; |
933 | ||
9936781d TM |
934 | if (o_res->fh.size == 0) |
935 | _nfs4_proc_lookup(dir, o_arg->name, &o_res->fh, o_res->f_attr); | |
936 | ||
56ae19f3 TM |
937 | if (o_arg->open_flags & O_CREAT) { |
938 | update_changeattr(dir, &o_res->cinfo); | |
939 | nfs_post_op_update_inode(dir, o_res->dir_attr); | |
940 | } else | |
941 | nfs_refresh_inode(dir, o_res->dir_attr); | |
1da177e4 | 942 | if(o_res->rflags & NFS4_OPEN_RESULT_CONFIRM) { |
cdd4e68b | 943 | status = _nfs4_proc_open_confirm(data); |
1da177e4 | 944 | if (status != 0) |
24ac23ab | 945 | return status; |
1da177e4 LT |
946 | } |
947 | if (!(o_res->f_attr->valid & NFS_ATTR_FATTR)) | |
9936781d | 948 | _nfs4_proc_getattr(server, &o_res->fh, o_res->f_attr); |
24ac23ab | 949 | return 0; |
1da177e4 LT |
950 | } |
951 | ||
10afec90 | 952 | static int nfs4_recover_expired_lease(struct nfs_server *server) |
58d9714a | 953 | { |
7539bbab | 954 | struct nfs_client *clp = server->nfs_client; |
6b30954e | 955 | int ret; |
58d9714a | 956 | |
6b30954e TM |
957 | for (;;) { |
958 | ret = nfs4_wait_clnt_recover(server->client, clp); | |
959 | if (ret != 0) | |
960 | return ret; | |
961 | if (!test_and_clear_bit(NFS4CLNT_LEASE_EXPIRED, &clp->cl_state)) | |
962 | break; | |
58d9714a | 963 | nfs4_schedule_state_recovery(clp); |
6b30954e TM |
964 | } |
965 | return 0; | |
58d9714a TM |
966 | } |
967 | ||
1da177e4 LT |
968 | /* |
969 | * OPEN_EXPIRED: | |
970 | * reclaim state on the server after a network partition. | |
971 | * Assumes caller holds the appropriate lock | |
972 | */ | |
539cd03a | 973 | static int _nfs4_open_expired(struct nfs_open_context *ctx, struct nfs4_state *state) |
1da177e4 | 974 | { |
e56e0b78 | 975 | struct nfs4_opendata *opendata; |
864472e9 | 976 | int ret; |
1da177e4 | 977 | |
6f220ed5 TM |
978 | opendata = nfs4_open_recoverdata_alloc(ctx, state); |
979 | if (IS_ERR(opendata)) | |
980 | return PTR_ERR(opendata); | |
864472e9 TM |
981 | ret = nfs4_open_recover(opendata, state); |
982 | if (ret == -ESTALE) { | |
983 | /* Invalidate the state owner so we don't ever use it again */ | |
539cd03a TM |
984 | nfs4_drop_state_owner(state->owner); |
985 | d_drop(ctx->path.dentry); | |
1da177e4 | 986 | } |
c6d00e63 | 987 | nfs4_opendata_put(opendata); |
864472e9 | 988 | return ret; |
1da177e4 LT |
989 | } |
990 | ||
539cd03a | 991 | static inline int nfs4_do_open_expired(struct nfs_open_context *ctx, struct nfs4_state *state) |
202b50dc | 992 | { |
539cd03a | 993 | struct nfs_server *server = NFS_SERVER(state->inode); |
202b50dc TM |
994 | struct nfs4_exception exception = { }; |
995 | int err; | |
996 | ||
997 | do { | |
539cd03a | 998 | err = _nfs4_open_expired(ctx, state); |
202b50dc TM |
999 | if (err == -NFS4ERR_DELAY) |
1000 | nfs4_handle_exception(server, err, &exception); | |
1001 | } while (exception.retry); | |
1002 | return err; | |
1003 | } | |
1004 | ||
1da177e4 LT |
1005 | static int nfs4_open_expired(struct nfs4_state_owner *sp, struct nfs4_state *state) |
1006 | { | |
1da177e4 | 1007 | struct nfs_open_context *ctx; |
864472e9 | 1008 | int ret; |
1da177e4 | 1009 | |
864472e9 TM |
1010 | ctx = nfs4_state_find_open_context(state); |
1011 | if (IS_ERR(ctx)) | |
1012 | return PTR_ERR(ctx); | |
539cd03a | 1013 | ret = nfs4_do_open_expired(ctx, state); |
864472e9 TM |
1014 | put_nfs_open_context(ctx); |
1015 | return ret; | |
1da177e4 LT |
1016 | } |
1017 | ||
aa53ed54 JL |
1018 | /* |
1019 | * on an EXCLUSIVE create, the server should send back a bitmask with FATTR4-* | |
1020 | * fields corresponding to attributes that were used to store the verifier. | |
1021 | * Make sure we clobber those fields in the later setattr call | |
1022 | */ | |
1023 | static inline void nfs4_exclusive_attrset(struct nfs4_opendata *opendata, struct iattr *sattr) | |
1024 | { | |
1025 | if ((opendata->o_res.attrset[1] & FATTR4_WORD1_TIME_ACCESS) && | |
1026 | !(sattr->ia_valid & ATTR_ATIME_SET)) | |
1027 | sattr->ia_valid |= ATTR_ATIME; | |
1028 | ||
1029 | if ((opendata->o_res.attrset[1] & FATTR4_WORD1_TIME_MODIFY) && | |
1030 | !(sattr->ia_valid & ATTR_MTIME_SET)) | |
1031 | sattr->ia_valid |= ATTR_MTIME; | |
1032 | } | |
1033 | ||
1da177e4 | 1034 | /* |
24ac23ab | 1035 | * Returns a referenced nfs4_state |
1da177e4 | 1036 | */ |
ad389da7 | 1037 | 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 |
1038 | { |
1039 | struct nfs4_state_owner *sp; | |
1040 | struct nfs4_state *state = NULL; | |
1041 | struct nfs_server *server = NFS_SERVER(dir); | |
7539bbab | 1042 | struct nfs_client *clp = server->nfs_client; |
e56e0b78 | 1043 | struct nfs4_opendata *opendata; |
aac00a8d | 1044 | int status; |
1da177e4 LT |
1045 | |
1046 | /* Protect against reboot recovery conflicts */ | |
1da177e4 LT |
1047 | status = -ENOMEM; |
1048 | if (!(sp = nfs4_get_state_owner(server, cred))) { | |
1049 | dprintk("nfs4_do_open: nfs4_get_state_owner failed!\n"); | |
1050 | goto out_err; | |
1051 | } | |
58d9714a TM |
1052 | status = nfs4_recover_expired_lease(server); |
1053 | if (status != 0) | |
b4454fe1 | 1054 | goto err_put_state_owner; |
aac00a8d TM |
1055 | if (path->dentry->d_inode != NULL) |
1056 | nfs4_return_incompatible_delegation(path->dentry->d_inode, flags & (FMODE_READ|FMODE_WRITE)); | |
58d9714a TM |
1057 | down_read(&clp->cl_sem); |
1058 | status = -ENOMEM; | |
ad389da7 | 1059 | opendata = nfs4_opendata_alloc(path, sp, flags, sattr); |
e56e0b78 | 1060 | if (opendata == NULL) |
76723de0 | 1061 | goto err_release_rwsem; |
1da177e4 | 1062 | |
aac00a8d TM |
1063 | if (path->dentry->d_inode != NULL) |
1064 | opendata->state = nfs4_get_open_state(path->dentry->d_inode, sp); | |
1065 | ||
24ac23ab | 1066 | status = _nfs4_proc_open(opendata); |
1da177e4 | 1067 | if (status != 0) |
c6d00e63 | 1068 | goto err_opendata_put; |
1da177e4 | 1069 | |
aa53ed54 JL |
1070 | if (opendata->o_arg.open_flags & O_EXCL) |
1071 | nfs4_exclusive_attrset(opendata, sattr); | |
1072 | ||
24ac23ab | 1073 | state = nfs4_opendata_to_nfs4_state(opendata); |
1b370bc2 TM |
1074 | status = PTR_ERR(state); |
1075 | if (IS_ERR(state)) | |
c6d00e63 | 1076 | goto err_opendata_put; |
c6d00e63 | 1077 | nfs4_opendata_put(opendata); |
1da177e4 LT |
1078 | nfs4_put_state_owner(sp); |
1079 | up_read(&clp->cl_sem); | |
1080 | *res = state; | |
1081 | return 0; | |
c6d00e63 TM |
1082 | err_opendata_put: |
1083 | nfs4_opendata_put(opendata); | |
76723de0 TM |
1084 | err_release_rwsem: |
1085 | up_read(&clp->cl_sem); | |
e56e0b78 TM |
1086 | err_put_state_owner: |
1087 | nfs4_put_state_owner(sp); | |
1da177e4 | 1088 | out_err: |
1da177e4 LT |
1089 | *res = NULL; |
1090 | return status; | |
1091 | } | |
1092 | ||
1093 | ||
ad389da7 | 1094 | static struct nfs4_state *nfs4_do_open(struct inode *dir, struct path *path, int flags, struct iattr *sattr, struct rpc_cred *cred) |
1da177e4 LT |
1095 | { |
1096 | struct nfs4_exception exception = { }; | |
1097 | struct nfs4_state *res; | |
1098 | int status; | |
1099 | ||
1100 | do { | |
ad389da7 | 1101 | status = _nfs4_do_open(dir, path, flags, sattr, cred, &res); |
1da177e4 LT |
1102 | if (status == 0) |
1103 | break; | |
1104 | /* NOTE: BAD_SEQID means the server and client disagree about the | |
1105 | * book-keeping w.r.t. state-changing operations | |
1106 | * (OPEN/CLOSE/LOCK/LOCKU...) | |
1107 | * It is actually a sign of a bug on the client or on the server. | |
1108 | * | |
1109 | * If we receive a BAD_SEQID error in the particular case of | |
cee54fc9 | 1110 | * doing an OPEN, we assume that nfs_increment_open_seqid() will |
1da177e4 LT |
1111 | * have unhashed the old state_owner for us, and that we can |
1112 | * therefore safely retry using a new one. We should still warn | |
1113 | * the user though... | |
1114 | */ | |
1115 | if (status == -NFS4ERR_BAD_SEQID) { | |
6f43ddcc TM |
1116 | printk(KERN_WARNING "NFS: v4 server %s " |
1117 | " returned a bad sequence-id error!\n", | |
1118 | NFS_SERVER(dir)->nfs_client->cl_hostname); | |
1da177e4 LT |
1119 | exception.retry = 1; |
1120 | continue; | |
1121 | } | |
550f5747 TM |
1122 | /* |
1123 | * BAD_STATEID on OPEN means that the server cancelled our | |
1124 | * state before it received the OPEN_CONFIRM. | |
1125 | * Recover by retrying the request as per the discussion | |
1126 | * on Page 181 of RFC3530. | |
1127 | */ | |
1128 | if (status == -NFS4ERR_BAD_STATEID) { | |
1129 | exception.retry = 1; | |
1130 | continue; | |
1131 | } | |
aac00a8d TM |
1132 | if (status == -EAGAIN) { |
1133 | /* We must have found a delegation */ | |
1134 | exception.retry = 1; | |
1135 | continue; | |
1136 | } | |
1da177e4 LT |
1137 | res = ERR_PTR(nfs4_handle_exception(NFS_SERVER(dir), |
1138 | status, &exception)); | |
1139 | } while (exception.retry); | |
1140 | return res; | |
1141 | } | |
1142 | ||
3e4f6290 TM |
1143 | static int _nfs4_do_setattr(struct inode *inode, struct nfs_fattr *fattr, |
1144 | struct iattr *sattr, struct nfs4_state *state) | |
1da177e4 | 1145 | { |
3e4f6290 | 1146 | struct nfs_server *server = NFS_SERVER(inode); |
1da177e4 | 1147 | struct nfs_setattrargs arg = { |
3e4f6290 | 1148 | .fh = NFS_FH(inode), |
1da177e4 LT |
1149 | .iap = sattr, |
1150 | .server = server, | |
1151 | .bitmask = server->attr_bitmask, | |
1152 | }; | |
1153 | struct nfs_setattrres res = { | |
1154 | .fattr = fattr, | |
1155 | .server = server, | |
1156 | }; | |
1157 | struct rpc_message msg = { | |
1158 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SETATTR], | |
1159 | .rpc_argp = &arg, | |
1160 | .rpc_resp = &res, | |
1161 | }; | |
26e976a8 | 1162 | unsigned long timestamp = jiffies; |
65e4308d | 1163 | int status; |
1da177e4 | 1164 | |
0e574af1 | 1165 | nfs_fattr_init(fattr); |
1da177e4 | 1166 | |
3e4f6290 TM |
1167 | if (nfs4_copy_delegation_stateid(&arg.stateid, inode)) { |
1168 | /* Use that stateid */ | |
1169 | } else if (state != NULL) { | |
1da177e4 | 1170 | msg.rpc_cred = state->owner->so_cred; |
08e9eac4 TM |
1171 | nfs4_copy_stateid(&arg.stateid, state, current->files); |
1172 | } else | |
1da177e4 LT |
1173 | memcpy(&arg.stateid, &zero_stateid, sizeof(arg.stateid)); |
1174 | ||
65e4308d | 1175 | status = rpc_call_sync(server->client, &msg, 0); |
26e976a8 TM |
1176 | if (status == 0 && state != NULL) |
1177 | renew_lease(server, timestamp); | |
65e4308d | 1178 | return status; |
1da177e4 LT |
1179 | } |
1180 | ||
3e4f6290 TM |
1181 | static int nfs4_do_setattr(struct inode *inode, struct nfs_fattr *fattr, |
1182 | struct iattr *sattr, struct nfs4_state *state) | |
1da177e4 | 1183 | { |
3e4f6290 | 1184 | struct nfs_server *server = NFS_SERVER(inode); |
1da177e4 LT |
1185 | struct nfs4_exception exception = { }; |
1186 | int err; | |
1187 | do { | |
1188 | err = nfs4_handle_exception(server, | |
3e4f6290 | 1189 | _nfs4_do_setattr(inode, fattr, sattr, state), |
1da177e4 LT |
1190 | &exception); |
1191 | } while (exception.retry); | |
1192 | return err; | |
1193 | } | |
1194 | ||
1195 | struct nfs4_closedata { | |
4a35bd41 | 1196 | struct path path; |
1da177e4 LT |
1197 | struct inode *inode; |
1198 | struct nfs4_state *state; | |
1199 | struct nfs_closeargs arg; | |
1200 | struct nfs_closeres res; | |
516a6af6 | 1201 | struct nfs_fattr fattr; |
26e976a8 | 1202 | unsigned long timestamp; |
1da177e4 LT |
1203 | }; |
1204 | ||
963d8fe5 | 1205 | static void nfs4_free_closedata(void *data) |
9512135d | 1206 | { |
963d8fe5 TM |
1207 | struct nfs4_closedata *calldata = data; |
1208 | struct nfs4_state_owner *sp = calldata->state->owner; | |
9512135d TM |
1209 | |
1210 | nfs4_put_open_state(calldata->state); | |
1211 | nfs_free_seqid(calldata->arg.seqid); | |
9512135d | 1212 | nfs4_put_state_owner(sp); |
4a35bd41 TM |
1213 | dput(calldata->path.dentry); |
1214 | mntput(calldata->path.mnt); | |
9512135d TM |
1215 | kfree(calldata); |
1216 | } | |
1217 | ||
963d8fe5 | 1218 | static void nfs4_close_done(struct rpc_task *task, void *data) |
1da177e4 | 1219 | { |
963d8fe5 | 1220 | struct nfs4_closedata *calldata = data; |
1da177e4 | 1221 | struct nfs4_state *state = calldata->state; |
1da177e4 LT |
1222 | struct nfs_server *server = NFS_SERVER(calldata->inode); |
1223 | ||
4ce70ada TM |
1224 | if (RPC_ASSASSINATED(task)) |
1225 | return; | |
1da177e4 LT |
1226 | /* hmm. we are done with the inode, and in the process of freeing |
1227 | * the state_owner. we keep this around to process errors | |
1228 | */ | |
cee54fc9 | 1229 | nfs_increment_open_seqid(task->tk_status, calldata->arg.seqid); |
1da177e4 LT |
1230 | switch (task->tk_status) { |
1231 | case 0: | |
45328c35 | 1232 | nfs_set_open_stateid(state, &calldata->res.stateid, 0); |
26e976a8 | 1233 | renew_lease(server, calldata->timestamp); |
1da177e4 LT |
1234 | break; |
1235 | case -NFS4ERR_STALE_STATEID: | |
1236 | case -NFS4ERR_EXPIRED: | |
1da177e4 LT |
1237 | break; |
1238 | default: | |
1239 | if (nfs4_async_handle_error(task, server) == -EAGAIN) { | |
1240 | rpc_restart_call(task); | |
1241 | return; | |
1242 | } | |
1243 | } | |
516a6af6 | 1244 | nfs_refresh_inode(calldata->inode, calldata->res.fattr); |
1da177e4 LT |
1245 | } |
1246 | ||
4ce70ada | 1247 | static void nfs4_close_prepare(struct rpc_task *task, void *data) |
1da177e4 | 1248 | { |
4ce70ada | 1249 | struct nfs4_closedata *calldata = data; |
9512135d | 1250 | struct nfs4_state *state = calldata->state; |
003707c7 | 1251 | int clear_rd, clear_wr, clear_rdwr; |
9512135d | 1252 | |
963d8fe5 | 1253 | if (nfs_wait_on_sequence(calldata->arg.seqid, task) != 0) |
9512135d | 1254 | return; |
003707c7 | 1255 | |
003707c7 | 1256 | clear_rd = clear_wr = clear_rdwr = 0; |
4cecb76f | 1257 | spin_lock(&state->owner->so_lock); |
003707c7 | 1258 | /* Calculate the change in open mode */ |
e7616923 | 1259 | if (state->n_rdwr == 0) { |
003707c7 | 1260 | if (state->n_rdonly == 0) { |
003707c7 TM |
1261 | clear_rd |= test_and_clear_bit(NFS_O_RDONLY_STATE, &state->flags); |
1262 | clear_rdwr |= test_and_clear_bit(NFS_O_RDWR_STATE, &state->flags); | |
1263 | } | |
1264 | if (state->n_wronly == 0) { | |
003707c7 TM |
1265 | clear_wr |= test_and_clear_bit(NFS_O_WRONLY_STATE, &state->flags); |
1266 | clear_rdwr |= test_and_clear_bit(NFS_O_RDWR_STATE, &state->flags); | |
1267 | } | |
e7616923 | 1268 | } |
4cecb76f | 1269 | spin_unlock(&state->owner->so_lock); |
003707c7 | 1270 | if (!clear_rd && !clear_wr && !clear_rdwr) { |
963d8fe5 TM |
1271 | /* Note: exit _without_ calling nfs4_close_done */ |
1272 | task->tk_action = NULL; | |
9512135d TM |
1273 | return; |
1274 | } | |
516a6af6 | 1275 | nfs_fattr_init(calldata->res.fattr); |
45328c35 | 1276 | if (test_bit(NFS_O_RDONLY_STATE, &state->flags) != 0) { |
5138fde0 | 1277 | task->tk_msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN_DOWNGRADE]; |
45328c35 TM |
1278 | calldata->arg.open_flags = FMODE_READ; |
1279 | } else if (test_bit(NFS_O_WRONLY_STATE, &state->flags) != 0) { | |
5138fde0 | 1280 | task->tk_msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN_DOWNGRADE]; |
45328c35 TM |
1281 | calldata->arg.open_flags = FMODE_WRITE; |
1282 | } | |
26e976a8 | 1283 | calldata->timestamp = jiffies; |
5138fde0 | 1284 | rpc_call_start(task); |
1da177e4 LT |
1285 | } |
1286 | ||
963d8fe5 | 1287 | static const struct rpc_call_ops nfs4_close_ops = { |
4ce70ada | 1288 | .rpc_call_prepare = nfs4_close_prepare, |
963d8fe5 TM |
1289 | .rpc_call_done = nfs4_close_done, |
1290 | .rpc_release = nfs4_free_closedata, | |
1291 | }; | |
1292 | ||
1da177e4 LT |
1293 | /* |
1294 | * It is possible for data to be read/written from a mem-mapped file | |
1295 | * after the sys_close call (which hits the vfs layer as a flush). | |
1296 | * This means that we can't safely call nfsv4 close on a file until | |
1297 | * the inode is cleared. This in turn means that we are not good | |
1298 | * NFSv4 citizens - we do not indicate to the server to update the file's | |
1299 | * share state even when we are done with one of the three share | |
1300 | * stateid's in the inode. | |
1301 | * | |
1302 | * NOTE: Caller must be holding the sp->so_owner semaphore! | |
1303 | */ | |
a49c3c77 | 1304 | int nfs4_do_close(struct path *path, struct nfs4_state *state, int wait) |
1da177e4 | 1305 | { |
4a35bd41 | 1306 | struct nfs_server *server = NFS_SERVER(state->inode); |
1da177e4 | 1307 | struct nfs4_closedata *calldata; |
b39e625b TM |
1308 | struct nfs4_state_owner *sp = state->owner; |
1309 | struct rpc_task *task; | |
5138fde0 TM |
1310 | struct rpc_message msg = { |
1311 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_CLOSE], | |
1312 | .rpc_cred = state->owner->so_cred, | |
1313 | }; | |
c970aa85 TM |
1314 | struct rpc_task_setup task_setup_data = { |
1315 | .rpc_client = server->client, | |
5138fde0 | 1316 | .rpc_message = &msg, |
c970aa85 TM |
1317 | .callback_ops = &nfs4_close_ops, |
1318 | .flags = RPC_TASK_ASYNC, | |
1319 | }; | |
9512135d | 1320 | int status = -ENOMEM; |
1da177e4 | 1321 | |
9512135d | 1322 | calldata = kmalloc(sizeof(*calldata), GFP_KERNEL); |
1da177e4 | 1323 | if (calldata == NULL) |
9512135d | 1324 | goto out; |
4a35bd41 | 1325 | calldata->inode = state->inode; |
1da177e4 | 1326 | calldata->state = state; |
4a35bd41 | 1327 | calldata->arg.fh = NFS_FH(state->inode); |
003707c7 | 1328 | calldata->arg.stateid = &state->open_stateid; |
1da177e4 | 1329 | /* Serialization for the sequence id */ |
cee54fc9 | 1330 | calldata->arg.seqid = nfs_alloc_seqid(&state->owner->so_seqid); |
9512135d TM |
1331 | if (calldata->arg.seqid == NULL) |
1332 | goto out_free_calldata; | |
516a6af6 TM |
1333 | calldata->arg.bitmask = server->attr_bitmask; |
1334 | calldata->res.fattr = &calldata->fattr; | |
1335 | calldata->res.server = server; | |
4a35bd41 TM |
1336 | calldata->path.mnt = mntget(path->mnt); |
1337 | calldata->path.dentry = dget(path->dentry); | |
9512135d | 1338 | |
5138fde0 TM |
1339 | msg.rpc_argp = &calldata->arg, |
1340 | msg.rpc_resp = &calldata->res, | |
c970aa85 TM |
1341 | task_setup_data.callback_data = calldata; |
1342 | task = rpc_run_task(&task_setup_data); | |
b39e625b TM |
1343 | if (IS_ERR(task)) |
1344 | return PTR_ERR(task); | |
a49c3c77 TM |
1345 | status = 0; |
1346 | if (wait) | |
1347 | status = rpc_wait_for_completion_task(task); | |
b39e625b | 1348 | rpc_put_task(task); |
a49c3c77 | 1349 | return status; |
9512135d TM |
1350 | out_free_calldata: |
1351 | kfree(calldata); | |
1352 | out: | |
b39e625b TM |
1353 | nfs4_put_open_state(state); |
1354 | nfs4_put_state_owner(sp); | |
9512135d | 1355 | return status; |
1da177e4 LT |
1356 | } |
1357 | ||
4a35bd41 | 1358 | static int nfs4_intent_set_file(struct nameidata *nd, struct path *path, struct nfs4_state *state) |
02a913a7 TM |
1359 | { |
1360 | struct file *filp; | |
1b45c46c | 1361 | int ret; |
02a913a7 | 1362 | |
1b45c46c TM |
1363 | /* If the open_intent is for execute, we have an extra check to make */ |
1364 | if (nd->intent.open.flags & FMODE_EXEC) { | |
af22f94a | 1365 | ret = nfs_may_open(state->inode, |
1b45c46c TM |
1366 | state->owner->so_cred, |
1367 | nd->intent.open.flags); | |
1368 | if (ret < 0) | |
1369 | goto out_close; | |
1370 | } | |
4a35bd41 | 1371 | filp = lookup_instantiate_filp(nd, path->dentry, NULL); |
02a913a7 TM |
1372 | if (!IS_ERR(filp)) { |
1373 | struct nfs_open_context *ctx; | |
cd3758e3 | 1374 | ctx = nfs_file_open_context(filp); |
02a913a7 | 1375 | ctx->state = state; |
95cf959b TM |
1376 | return 0; |
1377 | } | |
1b45c46c TM |
1378 | ret = PTR_ERR(filp); |
1379 | out_close: | |
a49c3c77 | 1380 | nfs4_close_sync(path, state, nd->intent.open.flags); |
1b45c46c | 1381 | return ret; |
02a913a7 TM |
1382 | } |
1383 | ||
1384 | struct dentry * | |
1da177e4 LT |
1385 | nfs4_atomic_open(struct inode *dir, struct dentry *dentry, struct nameidata *nd) |
1386 | { | |
565277f6 | 1387 | struct dentry *parent; |
ad389da7 TM |
1388 | struct path path = { |
1389 | .mnt = nd->mnt, | |
1390 | .dentry = dentry, | |
1391 | }; | |
1da177e4 LT |
1392 | struct iattr attr; |
1393 | struct rpc_cred *cred; | |
1394 | struct nfs4_state *state; | |
02a913a7 | 1395 | struct dentry *res; |
1da177e4 LT |
1396 | |
1397 | if (nd->flags & LOOKUP_CREATE) { | |
1398 | attr.ia_mode = nd->intent.open.create_mode; | |
1399 | attr.ia_valid = ATTR_MODE; | |
1400 | if (!IS_POSIXACL(dir)) | |
1401 | attr.ia_mode &= ~current->fs->umask; | |
1402 | } else { | |
1403 | attr.ia_valid = 0; | |
1404 | BUG_ON(nd->intent.open.flags & O_CREAT); | |
1405 | } | |
1406 | ||
1f163415 | 1407 | cred = rpcauth_lookupcred(NFS_CLIENT(dir)->cl_auth, 0); |
1da177e4 | 1408 | if (IS_ERR(cred)) |
02a913a7 | 1409 | return (struct dentry *)cred; |
565277f6 TM |
1410 | parent = dentry->d_parent; |
1411 | /* Protect against concurrent sillydeletes */ | |
1412 | nfs_block_sillyrename(parent); | |
ad389da7 | 1413 | state = nfs4_do_open(dir, &path, nd->intent.open.flags, &attr, cred); |
1da177e4 | 1414 | put_rpccred(cred); |
02a913a7 | 1415 | if (IS_ERR(state)) { |
d75340cc | 1416 | if (PTR_ERR(state) == -ENOENT) { |
02a913a7 | 1417 | d_add(dentry, NULL); |
d75340cc TM |
1418 | nfs_set_verifier(dentry, nfs_save_change_attribute(dir)); |
1419 | } | |
565277f6 | 1420 | nfs_unblock_sillyrename(parent); |
02a913a7 TM |
1421 | return (struct dentry *)state; |
1422 | } | |
24ac23ab | 1423 | res = d_add_unique(dentry, igrab(state->inode)); |
02a913a7 | 1424 | if (res != NULL) |
deee9369 | 1425 | path.dentry = res; |
d75340cc | 1426 | nfs_set_verifier(path.dentry, nfs_save_change_attribute(dir)); |
565277f6 | 1427 | nfs_unblock_sillyrename(parent); |
4a35bd41 | 1428 | nfs4_intent_set_file(nd, &path, state); |
02a913a7 | 1429 | return res; |
1da177e4 LT |
1430 | } |
1431 | ||
1432 | int | |
02a913a7 | 1433 | nfs4_open_revalidate(struct inode *dir, struct dentry *dentry, int openflags, struct nameidata *nd) |
1da177e4 | 1434 | { |
ad389da7 TM |
1435 | struct path path = { |
1436 | .mnt = nd->mnt, | |
1437 | .dentry = dentry, | |
1438 | }; | |
1da177e4 LT |
1439 | struct rpc_cred *cred; |
1440 | struct nfs4_state *state; | |
1da177e4 | 1441 | |
1f163415 | 1442 | cred = rpcauth_lookupcred(NFS_CLIENT(dir)->cl_auth, 0); |
1da177e4 LT |
1443 | if (IS_ERR(cred)) |
1444 | return PTR_ERR(cred); | |
aac00a8d | 1445 | state = nfs4_do_open(dir, &path, openflags, NULL, cred); |
1da177e4 | 1446 | put_rpccred(cred); |
02a913a7 TM |
1447 | if (IS_ERR(state)) { |
1448 | switch (PTR_ERR(state)) { | |
1449 | case -EPERM: | |
1450 | case -EACCES: | |
1451 | case -EDQUOT: | |
1452 | case -ENOSPC: | |
1453 | case -EROFS: | |
1454 | lookup_instantiate_filp(nd, (struct dentry *)state, NULL); | |
1455 | return 1; | |
b87c0adf CL |
1456 | default: |
1457 | goto out_drop; | |
02a913a7 | 1458 | } |
02a913a7 | 1459 | } |
24ac23ab | 1460 | if (state->inode == dentry->d_inode) { |
d75340cc | 1461 | nfs_set_verifier(dentry, nfs_save_change_attribute(dir)); |
4a35bd41 | 1462 | nfs4_intent_set_file(nd, &path, state); |
1da177e4 LT |
1463 | return 1; |
1464 | } | |
a49c3c77 | 1465 | nfs4_close_sync(&path, state, openflags); |
02a913a7 TM |
1466 | out_drop: |
1467 | d_drop(dentry); | |
1da177e4 LT |
1468 | return 0; |
1469 | } | |
1470 | ||
1471 | ||
1472 | static int _nfs4_server_capabilities(struct nfs_server *server, struct nfs_fh *fhandle) | |
1473 | { | |
1474 | struct nfs4_server_caps_res res = {}; | |
1475 | struct rpc_message msg = { | |
1476 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SERVER_CAPS], | |
1477 | .rpc_argp = fhandle, | |
1478 | .rpc_resp = &res, | |
1479 | }; | |
1480 | int status; | |
1481 | ||
1482 | status = rpc_call_sync(server->client, &msg, 0); | |
1483 | if (status == 0) { | |
1484 | memcpy(server->attr_bitmask, res.attr_bitmask, sizeof(server->attr_bitmask)); | |
1485 | if (res.attr_bitmask[0] & FATTR4_WORD0_ACL) | |
1486 | server->caps |= NFS_CAP_ACLS; | |
1487 | if (res.has_links != 0) | |
1488 | server->caps |= NFS_CAP_HARDLINKS; | |
1489 | if (res.has_symlinks != 0) | |
1490 | server->caps |= NFS_CAP_SYMLINKS; | |
1491 | server->acl_bitmask = res.acl_bitmask; | |
1492 | } | |
1493 | return status; | |
1494 | } | |
1495 | ||
55a97593 | 1496 | int nfs4_server_capabilities(struct nfs_server *server, struct nfs_fh *fhandle) |
1da177e4 LT |
1497 | { |
1498 | struct nfs4_exception exception = { }; | |
1499 | int err; | |
1500 | do { | |
1501 | err = nfs4_handle_exception(server, | |
1502 | _nfs4_server_capabilities(server, fhandle), | |
1503 | &exception); | |
1504 | } while (exception.retry); | |
1505 | return err; | |
1506 | } | |
1507 | ||
1508 | static int _nfs4_lookup_root(struct nfs_server *server, struct nfs_fh *fhandle, | |
1509 | struct nfs_fsinfo *info) | |
1510 | { | |
1da177e4 LT |
1511 | struct nfs4_lookup_root_arg args = { |
1512 | .bitmask = nfs4_fattr_bitmap, | |
1513 | }; | |
1514 | struct nfs4_lookup_res res = { | |
1515 | .server = server, | |
0e574af1 | 1516 | .fattr = info->fattr, |
1da177e4 LT |
1517 | .fh = fhandle, |
1518 | }; | |
1519 | struct rpc_message msg = { | |
1520 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOOKUP_ROOT], | |
1521 | .rpc_argp = &args, | |
1522 | .rpc_resp = &res, | |
1523 | }; | |
0e574af1 | 1524 | nfs_fattr_init(info->fattr); |
1da177e4 LT |
1525 | return rpc_call_sync(server->client, &msg, 0); |
1526 | } | |
1527 | ||
1528 | static int nfs4_lookup_root(struct nfs_server *server, struct nfs_fh *fhandle, | |
1529 | struct nfs_fsinfo *info) | |
1530 | { | |
1531 | struct nfs4_exception exception = { }; | |
1532 | int err; | |
1533 | do { | |
1534 | err = nfs4_handle_exception(server, | |
1535 | _nfs4_lookup_root(server, fhandle, info), | |
1536 | &exception); | |
1537 | } while (exception.retry); | |
1538 | return err; | |
1539 | } | |
1540 | ||
54ceac45 DH |
1541 | /* |
1542 | * get the file handle for the "/" directory on the server | |
1543 | */ | |
1da177e4 | 1544 | static int nfs4_proc_get_root(struct nfs_server *server, struct nfs_fh *fhandle, |
54ceac45 | 1545 | struct nfs_fsinfo *info) |
1da177e4 | 1546 | { |
1da177e4 LT |
1547 | int status; |
1548 | ||
1da177e4 | 1549 | status = nfs4_lookup_root(server, fhandle, info); |
1da177e4 LT |
1550 | if (status == 0) |
1551 | status = nfs4_server_capabilities(server, fhandle); | |
1552 | if (status == 0) | |
1553 | status = nfs4_do_fsinfo(server, fhandle, info); | |
c12e87f4 | 1554 | return nfs4_map_errors(status); |
1da177e4 LT |
1555 | } |
1556 | ||
6b97fd3d MN |
1557 | /* |
1558 | * Get locations and (maybe) other attributes of a referral. | |
1559 | * Note that we'll actually follow the referral later when | |
1560 | * we detect fsid mismatch in inode revalidation | |
1561 | */ | |
56659e99 | 1562 | static int nfs4_get_referral(struct inode *dir, const struct qstr *name, struct nfs_fattr *fattr, struct nfs_fh *fhandle) |
6b97fd3d MN |
1563 | { |
1564 | int status = -ENOMEM; | |
1565 | struct page *page = NULL; | |
1566 | struct nfs4_fs_locations *locations = NULL; | |
6b97fd3d MN |
1567 | |
1568 | page = alloc_page(GFP_KERNEL); | |
1569 | if (page == NULL) | |
1570 | goto out; | |
1571 | locations = kmalloc(sizeof(struct nfs4_fs_locations), GFP_KERNEL); | |
1572 | if (locations == NULL) | |
1573 | goto out; | |
1574 | ||
c228fd3a | 1575 | status = nfs4_proc_fs_locations(dir, name, locations, page); |
6b97fd3d MN |
1576 | if (status != 0) |
1577 | goto out; | |
1578 | /* Make sure server returned a different fsid for the referral */ | |
1579 | if (nfs_fsid_equal(&NFS_SERVER(dir)->fsid, &locations->fattr.fsid)) { | |
1580 | dprintk("%s: server did not return a different fsid for a referral at %s\n", __FUNCTION__, name->name); | |
1581 | status = -EIO; | |
1582 | goto out; | |
1583 | } | |
1584 | ||
1585 | memcpy(fattr, &locations->fattr, sizeof(struct nfs_fattr)); | |
1586 | fattr->valid |= NFS_ATTR_FATTR_V4_REFERRAL; | |
1587 | if (!fattr->mode) | |
1588 | fattr->mode = S_IFDIR; | |
1589 | memset(fhandle, 0, sizeof(struct nfs_fh)); | |
1590 | out: | |
1591 | if (page) | |
1592 | __free_page(page); | |
1593 | if (locations) | |
1594 | kfree(locations); | |
1595 | return status; | |
1596 | } | |
1597 | ||
1da177e4 LT |
1598 | static int _nfs4_proc_getattr(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fattr *fattr) |
1599 | { | |
1600 | struct nfs4_getattr_arg args = { | |
1601 | .fh = fhandle, | |
1602 | .bitmask = server->attr_bitmask, | |
1603 | }; | |
1604 | struct nfs4_getattr_res res = { | |
1605 | .fattr = fattr, | |
1606 | .server = server, | |
1607 | }; | |
1608 | struct rpc_message msg = { | |
1609 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GETATTR], | |
1610 | .rpc_argp = &args, | |
1611 | .rpc_resp = &res, | |
1612 | }; | |
1613 | ||
0e574af1 | 1614 | nfs_fattr_init(fattr); |
1da177e4 LT |
1615 | return rpc_call_sync(server->client, &msg, 0); |
1616 | } | |
1617 | ||
1618 | static int nfs4_proc_getattr(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fattr *fattr) | |
1619 | { | |
1620 | struct nfs4_exception exception = { }; | |
1621 | int err; | |
1622 | do { | |
1623 | err = nfs4_handle_exception(server, | |
1624 | _nfs4_proc_getattr(server, fhandle, fattr), | |
1625 | &exception); | |
1626 | } while (exception.retry); | |
1627 | return err; | |
1628 | } | |
1629 | ||
1630 | /* | |
1631 | * The file is not closed if it is opened due to the a request to change | |
1632 | * the size of the file. The open call will not be needed once the | |
1633 | * VFS layer lookup-intents are implemented. | |
1634 | * | |
1635 | * Close is called when the inode is destroyed. | |
1636 | * If we haven't opened the file for O_WRONLY, we | |
1637 | * need to in the size_change case to obtain a stateid. | |
1638 | * | |
1639 | * Got race? | |
1640 | * Because OPEN is always done by name in nfsv4, it is | |
1641 | * possible that we opened a different file by the same | |
1642 | * name. We can recognize this race condition, but we | |
1643 | * can't do anything about it besides returning an error. | |
1644 | * | |
1645 | * This will be fixed with VFS changes (lookup-intent). | |
1646 | */ | |
1647 | static int | |
1648 | nfs4_proc_setattr(struct dentry *dentry, struct nfs_fattr *fattr, | |
1649 | struct iattr *sattr) | |
1650 | { | |
08e9eac4 TM |
1651 | struct rpc_cred *cred; |
1652 | struct inode *inode = dentry->d_inode; | |
d530838b TM |
1653 | struct nfs_open_context *ctx; |
1654 | struct nfs4_state *state = NULL; | |
1da177e4 LT |
1655 | int status; |
1656 | ||
0e574af1 | 1657 | nfs_fattr_init(fattr); |
1da177e4 | 1658 | |
1f163415 | 1659 | cred = rpcauth_lookupcred(NFS_CLIENT(inode)->cl_auth, 0); |
08e9eac4 TM |
1660 | if (IS_ERR(cred)) |
1661 | return PTR_ERR(cred); | |
d530838b TM |
1662 | |
1663 | /* Search for an existing open(O_WRITE) file */ | |
1664 | ctx = nfs_find_open_context(inode, cred, FMODE_WRITE); | |
1665 | if (ctx != NULL) | |
1666 | state = ctx->state; | |
08e9eac4 | 1667 | |
3e4f6290 | 1668 | status = nfs4_do_setattr(inode, fattr, sattr, state); |
65e4308d TM |
1669 | if (status == 0) |
1670 | nfs_setattr_update_inode(inode, sattr); | |
d530838b TM |
1671 | if (ctx != NULL) |
1672 | put_nfs_open_context(ctx); | |
08e9eac4 | 1673 | put_rpccred(cred); |
1da177e4 LT |
1674 | return status; |
1675 | } | |
1676 | ||
56659e99 TM |
1677 | static int _nfs4_proc_lookupfh(struct nfs_server *server, const struct nfs_fh *dirfh, |
1678 | const struct qstr *name, struct nfs_fh *fhandle, | |
2b3de441 DH |
1679 | struct nfs_fattr *fattr) |
1680 | { | |
1681 | int status; | |
1682 | struct nfs4_lookup_arg args = { | |
1683 | .bitmask = server->attr_bitmask, | |
1684 | .dir_fh = dirfh, | |
1685 | .name = name, | |
1686 | }; | |
1687 | struct nfs4_lookup_res res = { | |
1688 | .server = server, | |
1689 | .fattr = fattr, | |
1690 | .fh = fhandle, | |
1691 | }; | |
1692 | struct rpc_message msg = { | |
1693 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOOKUP], | |
1694 | .rpc_argp = &args, | |
1695 | .rpc_resp = &res, | |
1696 | }; | |
1697 | ||
1698 | nfs_fattr_init(fattr); | |
1699 | ||
1700 | dprintk("NFS call lookupfh %s\n", name->name); | |
1701 | status = rpc_call_sync(server->client, &msg, 0); | |
1702 | dprintk("NFS reply lookupfh: %d\n", status); | |
2b3de441 DH |
1703 | return status; |
1704 | } | |
1705 | ||
1706 | static int nfs4_proc_lookupfh(struct nfs_server *server, struct nfs_fh *dirfh, | |
1707 | struct qstr *name, struct nfs_fh *fhandle, | |
1708 | struct nfs_fattr *fattr) | |
1709 | { | |
1710 | struct nfs4_exception exception = { }; | |
1711 | int err; | |
1712 | do { | |
4e56e082 TM |
1713 | err = _nfs4_proc_lookupfh(server, dirfh, name, fhandle, fattr); |
1714 | /* FIXME: !!!! */ | |
1715 | if (err == -NFS4ERR_MOVED) { | |
1716 | err = -EREMOTE; | |
1717 | break; | |
1718 | } | |
1719 | err = nfs4_handle_exception(server, err, &exception); | |
2b3de441 DH |
1720 | } while (exception.retry); |
1721 | return err; | |
1722 | } | |
1723 | ||
56659e99 | 1724 | static int _nfs4_proc_lookup(struct inode *dir, const struct qstr *name, |
1da177e4 LT |
1725 | struct nfs_fh *fhandle, struct nfs_fattr *fattr) |
1726 | { | |
4e56e082 | 1727 | int status; |
1da177e4 LT |
1728 | |
1729 | dprintk("NFS call lookup %s\n", name->name); | |
4e56e082 | 1730 | status = _nfs4_proc_lookupfh(NFS_SERVER(dir), NFS_FH(dir), name, fhandle, fattr); |
6b97fd3d MN |
1731 | if (status == -NFS4ERR_MOVED) |
1732 | status = nfs4_get_referral(dir, name, fattr, fhandle); | |
1da177e4 LT |
1733 | dprintk("NFS reply lookup: %d\n", status); |
1734 | return status; | |
1735 | } | |
1736 | ||
1737 | static int nfs4_proc_lookup(struct inode *dir, struct qstr *name, struct nfs_fh *fhandle, struct nfs_fattr *fattr) | |
1738 | { | |
1739 | struct nfs4_exception exception = { }; | |
1740 | int err; | |
1741 | do { | |
1742 | err = nfs4_handle_exception(NFS_SERVER(dir), | |
1743 | _nfs4_proc_lookup(dir, name, fhandle, fattr), | |
1744 | &exception); | |
1745 | } while (exception.retry); | |
1746 | return err; | |
1747 | } | |
1748 | ||
1749 | static int _nfs4_proc_access(struct inode *inode, struct nfs_access_entry *entry) | |
1750 | { | |
76b32999 TM |
1751 | struct nfs_server *server = NFS_SERVER(inode); |
1752 | struct nfs_fattr fattr; | |
1da177e4 LT |
1753 | struct nfs4_accessargs args = { |
1754 | .fh = NFS_FH(inode), | |
76b32999 TM |
1755 | .bitmask = server->attr_bitmask, |
1756 | }; | |
1757 | struct nfs4_accessres res = { | |
1758 | .server = server, | |
1759 | .fattr = &fattr, | |
1da177e4 | 1760 | }; |
1da177e4 LT |
1761 | struct rpc_message msg = { |
1762 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_ACCESS], | |
1763 | .rpc_argp = &args, | |
1764 | .rpc_resp = &res, | |
1765 | .rpc_cred = entry->cred, | |
1766 | }; | |
1767 | int mode = entry->mask; | |
1768 | int status; | |
1769 | ||
1770 | /* | |
1771 | * Determine which access bits we want to ask for... | |
1772 | */ | |
1773 | if (mode & MAY_READ) | |
1774 | args.access |= NFS4_ACCESS_READ; | |
1775 | if (S_ISDIR(inode->i_mode)) { | |
1776 | if (mode & MAY_WRITE) | |
1777 | args.access |= NFS4_ACCESS_MODIFY | NFS4_ACCESS_EXTEND | NFS4_ACCESS_DELETE; | |
1778 | if (mode & MAY_EXEC) | |
1779 | args.access |= NFS4_ACCESS_LOOKUP; | |
1780 | } else { | |
1781 | if (mode & MAY_WRITE) | |
1782 | args.access |= NFS4_ACCESS_MODIFY | NFS4_ACCESS_EXTEND; | |
1783 | if (mode & MAY_EXEC) | |
1784 | args.access |= NFS4_ACCESS_EXECUTE; | |
1785 | } | |
76b32999 | 1786 | nfs_fattr_init(&fattr); |
1da177e4 LT |
1787 | status = rpc_call_sync(NFS_CLIENT(inode), &msg, 0); |
1788 | if (!status) { | |
1789 | entry->mask = 0; | |
1790 | if (res.access & NFS4_ACCESS_READ) | |
1791 | entry->mask |= MAY_READ; | |
1792 | if (res.access & (NFS4_ACCESS_MODIFY | NFS4_ACCESS_EXTEND | NFS4_ACCESS_DELETE)) | |
1793 | entry->mask |= MAY_WRITE; | |
1794 | if (res.access & (NFS4_ACCESS_LOOKUP|NFS4_ACCESS_EXECUTE)) | |
1795 | entry->mask |= MAY_EXEC; | |
76b32999 | 1796 | nfs_refresh_inode(inode, &fattr); |
1da177e4 LT |
1797 | } |
1798 | return status; | |
1799 | } | |
1800 | ||
1801 | static int nfs4_proc_access(struct inode *inode, struct nfs_access_entry *entry) | |
1802 | { | |
1803 | struct nfs4_exception exception = { }; | |
1804 | int err; | |
1805 | do { | |
1806 | err = nfs4_handle_exception(NFS_SERVER(inode), | |
1807 | _nfs4_proc_access(inode, entry), | |
1808 | &exception); | |
1809 | } while (exception.retry); | |
1810 | return err; | |
1811 | } | |
1812 | ||
1813 | /* | |
1814 | * TODO: For the time being, we don't try to get any attributes | |
1815 | * along with any of the zero-copy operations READ, READDIR, | |
1816 | * READLINK, WRITE. | |
1817 | * | |
1818 | * In the case of the first three, we want to put the GETATTR | |
1819 | * after the read-type operation -- this is because it is hard | |
1820 | * to predict the length of a GETATTR response in v4, and thus | |
1821 | * align the READ data correctly. This means that the GETATTR | |
1822 | * may end up partially falling into the page cache, and we should | |
1823 | * shift it into the 'tail' of the xdr_buf before processing. | |
1824 | * To do this efficiently, we need to know the total length | |
1825 | * of data received, which doesn't seem to be available outside | |
1826 | * of the RPC layer. | |
1827 | * | |
1828 | * In the case of WRITE, we also want to put the GETATTR after | |
1829 | * the operation -- in this case because we want to make sure | |
1830 | * we get the post-operation mtime and size. This means that | |
1831 | * we can't use xdr_encode_pages() as written: we need a variant | |
1832 | * of it which would leave room in the 'tail' iovec. | |
1833 | * | |
1834 | * Both of these changes to the XDR layer would in fact be quite | |
1835 | * minor, but I decided to leave them for a subsequent patch. | |
1836 | */ | |
1837 | static int _nfs4_proc_readlink(struct inode *inode, struct page *page, | |
1838 | unsigned int pgbase, unsigned int pglen) | |
1839 | { | |
1840 | struct nfs4_readlink args = { | |
1841 | .fh = NFS_FH(inode), | |
1842 | .pgbase = pgbase, | |
1843 | .pglen = pglen, | |
1844 | .pages = &page, | |
1845 | }; | |
1846 | struct rpc_message msg = { | |
1847 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_READLINK], | |
1848 | .rpc_argp = &args, | |
1849 | .rpc_resp = NULL, | |
1850 | }; | |
1851 | ||
1852 | return rpc_call_sync(NFS_CLIENT(inode), &msg, 0); | |
1853 | } | |
1854 | ||
1855 | static int nfs4_proc_readlink(struct inode *inode, struct page *page, | |
1856 | unsigned int pgbase, unsigned int pglen) | |
1857 | { | |
1858 | struct nfs4_exception exception = { }; | |
1859 | int err; | |
1860 | do { | |
1861 | err = nfs4_handle_exception(NFS_SERVER(inode), | |
1862 | _nfs4_proc_readlink(inode, page, pgbase, pglen), | |
1863 | &exception); | |
1864 | } while (exception.retry); | |
1865 | return err; | |
1866 | } | |
1867 | ||
1da177e4 LT |
1868 | /* |
1869 | * Got race? | |
1870 | * We will need to arrange for the VFS layer to provide an atomic open. | |
1871 | * Until then, this create/open method is prone to inefficiency and race | |
1872 | * conditions due to the lookup, create, and open VFS calls from sys_open() | |
1873 | * placed on the wire. | |
1874 | * | |
1875 | * Given the above sorry state of affairs, I'm simply sending an OPEN. | |
1876 | * The file will be opened again in the subsequent VFS open call | |
1877 | * (nfs4_proc_file_open). | |
1878 | * | |
1879 | * The open for read will just hang around to be used by any process that | |
1880 | * opens the file O_RDONLY. This will all be resolved with the VFS changes. | |
1881 | */ | |
1882 | ||
1883 | static int | |
1884 | nfs4_proc_create(struct inode *dir, struct dentry *dentry, struct iattr *sattr, | |
02a913a7 | 1885 | int flags, struct nameidata *nd) |
1da177e4 | 1886 | { |
ad389da7 TM |
1887 | struct path path = { |
1888 | .mnt = nd->mnt, | |
1889 | .dentry = dentry, | |
1890 | }; | |
1da177e4 LT |
1891 | struct nfs4_state *state; |
1892 | struct rpc_cred *cred; | |
1893 | int status = 0; | |
1894 | ||
1f163415 | 1895 | cred = rpcauth_lookupcred(NFS_CLIENT(dir)->cl_auth, 0); |
1da177e4 LT |
1896 | if (IS_ERR(cred)) { |
1897 | status = PTR_ERR(cred); | |
1898 | goto out; | |
1899 | } | |
ad389da7 | 1900 | state = nfs4_do_open(dir, &path, flags, sattr, cred); |
1da177e4 | 1901 | put_rpccred(cred); |
d4d9cdcb | 1902 | d_drop(dentry); |
1da177e4 LT |
1903 | if (IS_ERR(state)) { |
1904 | status = PTR_ERR(state); | |
1905 | goto out; | |
1906 | } | |
d4d9cdcb | 1907 | d_add(dentry, igrab(state->inode)); |
d75340cc | 1908 | nfs_set_verifier(dentry, nfs_save_change_attribute(dir)); |
1da177e4 LT |
1909 | if (flags & O_EXCL) { |
1910 | struct nfs_fattr fattr; | |
3e4f6290 | 1911 | status = nfs4_do_setattr(state->inode, &fattr, sattr, state); |
02a913a7 | 1912 | if (status == 0) |
65e4308d | 1913 | nfs_setattr_update_inode(state->inode, sattr); |
aa53ed54 | 1914 | nfs_post_op_update_inode(state->inode, &fattr); |
02a913a7 | 1915 | } |
ad389da7 | 1916 | if (status == 0 && (nd->flags & LOOKUP_OPEN) != 0) |
4a35bd41 | 1917 | status = nfs4_intent_set_file(nd, &path, state); |
02a913a7 | 1918 | else |
a49c3c77 | 1919 | nfs4_close_sync(&path, state, flags); |
1da177e4 LT |
1920 | out: |
1921 | return status; | |
1922 | } | |
1923 | ||
1924 | static int _nfs4_proc_remove(struct inode *dir, struct qstr *name) | |
1925 | { | |
16e42959 | 1926 | struct nfs_server *server = NFS_SERVER(dir); |
4fdc17b2 | 1927 | struct nfs_removeargs args = { |
1da177e4 | 1928 | .fh = NFS_FH(dir), |
4fdc17b2 TM |
1929 | .name.len = name->len, |
1930 | .name.name = name->name, | |
16e42959 TM |
1931 | .bitmask = server->attr_bitmask, |
1932 | }; | |
4fdc17b2 | 1933 | struct nfs_removeres res = { |
16e42959 | 1934 | .server = server, |
1da177e4 | 1935 | }; |
1da177e4 | 1936 | struct rpc_message msg = { |
4fdc17b2 TM |
1937 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_REMOVE], |
1938 | .rpc_argp = &args, | |
1939 | .rpc_resp = &res, | |
1da177e4 LT |
1940 | }; |
1941 | int status; | |
1942 | ||
4fdc17b2 | 1943 | nfs_fattr_init(&res.dir_attr); |
16e42959 TM |
1944 | status = rpc_call_sync(server->client, &msg, 0); |
1945 | if (status == 0) { | |
1946 | update_changeattr(dir, &res.cinfo); | |
4fdc17b2 | 1947 | nfs_post_op_update_inode(dir, &res.dir_attr); |
16e42959 | 1948 | } |
1da177e4 LT |
1949 | return status; |
1950 | } | |
1951 | ||
1952 | static int nfs4_proc_remove(struct inode *dir, struct qstr *name) | |
1953 | { | |
1954 | struct nfs4_exception exception = { }; | |
1955 | int err; | |
1956 | do { | |
1957 | err = nfs4_handle_exception(NFS_SERVER(dir), | |
1958 | _nfs4_proc_remove(dir, name), | |
1959 | &exception); | |
1960 | } while (exception.retry); | |
1961 | return err; | |
1962 | } | |
1963 | ||
e4eff1a6 | 1964 | static void nfs4_proc_unlink_setup(struct rpc_message *msg, struct inode *dir) |
1da177e4 | 1965 | { |
e4eff1a6 TM |
1966 | struct nfs_server *server = NFS_SERVER(dir); |
1967 | struct nfs_removeargs *args = msg->rpc_argp; | |
1968 | struct nfs_removeres *res = msg->rpc_resp; | |
1da177e4 | 1969 | |
e4eff1a6 TM |
1970 | args->bitmask = server->attr_bitmask; |
1971 | res->server = server; | |
1da177e4 | 1972 | msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_REMOVE]; |
1da177e4 LT |
1973 | } |
1974 | ||
e4eff1a6 | 1975 | static int nfs4_proc_unlink_done(struct rpc_task *task, struct inode *dir) |
1da177e4 | 1976 | { |
e4eff1a6 TM |
1977 | struct nfs_removeres *res = task->tk_msg.rpc_resp; |
1978 | ||
1979 | if (nfs4_async_handle_error(task, res->server) == -EAGAIN) | |
1980 | return 0; | |
1981 | update_changeattr(dir, &res->cinfo); | |
1982 | nfs_post_op_update_inode(dir, &res->dir_attr); | |
1983 | return 1; | |
1da177e4 LT |
1984 | } |
1985 | ||
1986 | static int _nfs4_proc_rename(struct inode *old_dir, struct qstr *old_name, | |
1987 | struct inode *new_dir, struct qstr *new_name) | |
1988 | { | |
6caf2c82 | 1989 | struct nfs_server *server = NFS_SERVER(old_dir); |
1da177e4 LT |
1990 | struct nfs4_rename_arg arg = { |
1991 | .old_dir = NFS_FH(old_dir), | |
1992 | .new_dir = NFS_FH(new_dir), | |
1993 | .old_name = old_name, | |
1994 | .new_name = new_name, | |
6caf2c82 TM |
1995 | .bitmask = server->attr_bitmask, |
1996 | }; | |
1997 | struct nfs_fattr old_fattr, new_fattr; | |
1998 | struct nfs4_rename_res res = { | |
1999 | .server = server, | |
2000 | .old_fattr = &old_fattr, | |
2001 | .new_fattr = &new_fattr, | |
1da177e4 | 2002 | }; |
1da177e4 LT |
2003 | struct rpc_message msg = { |
2004 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RENAME], | |
2005 | .rpc_argp = &arg, | |
2006 | .rpc_resp = &res, | |
2007 | }; | |
2008 | int status; | |
2009 | ||
6caf2c82 TM |
2010 | nfs_fattr_init(res.old_fattr); |
2011 | nfs_fattr_init(res.new_fattr); | |
2012 | status = rpc_call_sync(server->client, &msg, 0); | |
1da177e4 LT |
2013 | |
2014 | if (!status) { | |
2015 | update_changeattr(old_dir, &res.old_cinfo); | |
6caf2c82 | 2016 | nfs_post_op_update_inode(old_dir, res.old_fattr); |
1da177e4 | 2017 | update_changeattr(new_dir, &res.new_cinfo); |
6caf2c82 | 2018 | nfs_post_op_update_inode(new_dir, res.new_fattr); |
1da177e4 LT |
2019 | } |
2020 | return status; | |
2021 | } | |
2022 | ||
2023 | static int nfs4_proc_rename(struct inode *old_dir, struct qstr *old_name, | |
2024 | struct inode *new_dir, struct qstr *new_name) | |
2025 | { | |
2026 | struct nfs4_exception exception = { }; | |
2027 | int err; | |
2028 | do { | |
2029 | err = nfs4_handle_exception(NFS_SERVER(old_dir), | |
2030 | _nfs4_proc_rename(old_dir, old_name, | |
2031 | new_dir, new_name), | |
2032 | &exception); | |
2033 | } while (exception.retry); | |
2034 | return err; | |
2035 | } | |
2036 | ||
2037 | static int _nfs4_proc_link(struct inode *inode, struct inode *dir, struct qstr *name) | |
2038 | { | |
91ba2eee | 2039 | struct nfs_server *server = NFS_SERVER(inode); |
1da177e4 LT |
2040 | struct nfs4_link_arg arg = { |
2041 | .fh = NFS_FH(inode), | |
2042 | .dir_fh = NFS_FH(dir), | |
2043 | .name = name, | |
91ba2eee TM |
2044 | .bitmask = server->attr_bitmask, |
2045 | }; | |
2046 | struct nfs_fattr fattr, dir_attr; | |
2047 | struct nfs4_link_res res = { | |
2048 | .server = server, | |
2049 | .fattr = &fattr, | |
2050 | .dir_attr = &dir_attr, | |
1da177e4 | 2051 | }; |
1da177e4 LT |
2052 | struct rpc_message msg = { |
2053 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LINK], | |
2054 | .rpc_argp = &arg, | |
91ba2eee | 2055 | .rpc_resp = &res, |
1da177e4 LT |
2056 | }; |
2057 | int status; | |
2058 | ||
91ba2eee TM |
2059 | nfs_fattr_init(res.fattr); |
2060 | nfs_fattr_init(res.dir_attr); | |
2061 | status = rpc_call_sync(server->client, &msg, 0); | |
2062 | if (!status) { | |
2063 | update_changeattr(dir, &res.cinfo); | |
2064 | nfs_post_op_update_inode(dir, res.dir_attr); | |
73a3d07c | 2065 | nfs_post_op_update_inode(inode, res.fattr); |
91ba2eee | 2066 | } |
1da177e4 LT |
2067 | |
2068 | return status; | |
2069 | } | |
2070 | ||
2071 | static int nfs4_proc_link(struct inode *inode, struct inode *dir, struct qstr *name) | |
2072 | { | |
2073 | struct nfs4_exception exception = { }; | |
2074 | int err; | |
2075 | do { | |
2076 | err = nfs4_handle_exception(NFS_SERVER(inode), | |
2077 | _nfs4_proc_link(inode, dir, name), | |
2078 | &exception); | |
2079 | } while (exception.retry); | |
2080 | return err; | |
2081 | } | |
2082 | ||
4f390c15 | 2083 | static int _nfs4_proc_symlink(struct inode *dir, struct dentry *dentry, |
94a6d753 | 2084 | struct page *page, unsigned int len, struct iattr *sattr) |
1da177e4 LT |
2085 | { |
2086 | struct nfs_server *server = NFS_SERVER(dir); | |
4f390c15 CL |
2087 | struct nfs_fh fhandle; |
2088 | struct nfs_fattr fattr, dir_fattr; | |
1da177e4 LT |
2089 | struct nfs4_create_arg arg = { |
2090 | .dir_fh = NFS_FH(dir), | |
2091 | .server = server, | |
4f390c15 | 2092 | .name = &dentry->d_name, |
1da177e4 LT |
2093 | .attrs = sattr, |
2094 | .ftype = NF4LNK, | |
2095 | .bitmask = server->attr_bitmask, | |
2096 | }; | |
2097 | struct nfs4_create_res res = { | |
2098 | .server = server, | |
4f390c15 CL |
2099 | .fh = &fhandle, |
2100 | .fattr = &fattr, | |
56ae19f3 | 2101 | .dir_fattr = &dir_fattr, |
1da177e4 LT |
2102 | }; |
2103 | struct rpc_message msg = { | |
2104 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SYMLINK], | |
2105 | .rpc_argp = &arg, | |
2106 | .rpc_resp = &res, | |
2107 | }; | |
2108 | int status; | |
2109 | ||
94a6d753 | 2110 | if (len > NFS4_MAXPATHLEN) |
1da177e4 | 2111 | return -ENAMETOOLONG; |
4f390c15 | 2112 | |
94a6d753 CL |
2113 | arg.u.symlink.pages = &page; |
2114 | arg.u.symlink.len = len; | |
4f390c15 | 2115 | nfs_fattr_init(&fattr); |
56ae19f3 | 2116 | nfs_fattr_init(&dir_fattr); |
1da177e4 LT |
2117 | |
2118 | status = rpc_call_sync(NFS_CLIENT(dir), &msg, 0); | |
4f390c15 | 2119 | if (!status) { |
1da177e4 | 2120 | update_changeattr(dir, &res.dir_cinfo); |
4f390c15 CL |
2121 | nfs_post_op_update_inode(dir, res.dir_fattr); |
2122 | status = nfs_instantiate(dentry, &fhandle, &fattr); | |
2123 | } | |
1da177e4 LT |
2124 | return status; |
2125 | } | |
2126 | ||
4f390c15 | 2127 | static int nfs4_proc_symlink(struct inode *dir, struct dentry *dentry, |
94a6d753 | 2128 | struct page *page, unsigned int len, struct iattr *sattr) |
1da177e4 LT |
2129 | { |
2130 | struct nfs4_exception exception = { }; | |
2131 | int err; | |
2132 | do { | |
2133 | err = nfs4_handle_exception(NFS_SERVER(dir), | |
94a6d753 CL |
2134 | _nfs4_proc_symlink(dir, dentry, page, |
2135 | len, sattr), | |
1da177e4 LT |
2136 | &exception); |
2137 | } while (exception.retry); | |
2138 | return err; | |
2139 | } | |
2140 | ||
2141 | static int _nfs4_proc_mkdir(struct inode *dir, struct dentry *dentry, | |
2142 | struct iattr *sattr) | |
2143 | { | |
2144 | struct nfs_server *server = NFS_SERVER(dir); | |
2145 | struct nfs_fh fhandle; | |
56ae19f3 | 2146 | struct nfs_fattr fattr, dir_fattr; |
1da177e4 LT |
2147 | struct nfs4_create_arg arg = { |
2148 | .dir_fh = NFS_FH(dir), | |
2149 | .server = server, | |
2150 | .name = &dentry->d_name, | |
2151 | .attrs = sattr, | |
2152 | .ftype = NF4DIR, | |
2153 | .bitmask = server->attr_bitmask, | |
2154 | }; | |
2155 | struct nfs4_create_res res = { | |
2156 | .server = server, | |
2157 | .fh = &fhandle, | |
2158 | .fattr = &fattr, | |
56ae19f3 | 2159 | .dir_fattr = &dir_fattr, |
1da177e4 LT |
2160 | }; |
2161 | struct rpc_message msg = { | |
2162 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_CREATE], | |
2163 | .rpc_argp = &arg, | |
2164 | .rpc_resp = &res, | |
2165 | }; | |
2166 | int status; | |
2167 | ||
0e574af1 | 2168 | nfs_fattr_init(&fattr); |
56ae19f3 | 2169 | nfs_fattr_init(&dir_fattr); |
1da177e4 LT |
2170 | |
2171 | status = rpc_call_sync(NFS_CLIENT(dir), &msg, 0); | |
2172 | if (!status) { | |
2173 | update_changeattr(dir, &res.dir_cinfo); | |
56ae19f3 | 2174 | nfs_post_op_update_inode(dir, res.dir_fattr); |
1da177e4 LT |
2175 | status = nfs_instantiate(dentry, &fhandle, &fattr); |
2176 | } | |
2177 | return status; | |
2178 | } | |
2179 | ||
2180 | static int nfs4_proc_mkdir(struct inode *dir, struct dentry *dentry, | |
2181 | struct iattr *sattr) | |
2182 | { | |
2183 | struct nfs4_exception exception = { }; | |
2184 | int err; | |
2185 | do { | |
2186 | err = nfs4_handle_exception(NFS_SERVER(dir), | |
2187 | _nfs4_proc_mkdir(dir, dentry, sattr), | |
2188 | &exception); | |
2189 | } while (exception.retry); | |
2190 | return err; | |
2191 | } | |
2192 | ||
2193 | static int _nfs4_proc_readdir(struct dentry *dentry, struct rpc_cred *cred, | |
2194 | u64 cookie, struct page *page, unsigned int count, int plus) | |
2195 | { | |
2196 | struct inode *dir = dentry->d_inode; | |
2197 | struct nfs4_readdir_arg args = { | |
2198 | .fh = NFS_FH(dir), | |
2199 | .pages = &page, | |
2200 | .pgbase = 0, | |
2201 | .count = count, | |
2202 | .bitmask = NFS_SERVER(dentry->d_inode)->attr_bitmask, | |
2203 | }; | |
2204 | struct nfs4_readdir_res res; | |
2205 | struct rpc_message msg = { | |
2206 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_READDIR], | |
2207 | .rpc_argp = &args, | |
2208 | .rpc_resp = &res, | |
2209 | .rpc_cred = cred, | |
2210 | }; | |
2211 | int status; | |
2212 | ||
eadf4598 TM |
2213 | dprintk("%s: dentry = %s/%s, cookie = %Lu\n", __FUNCTION__, |
2214 | dentry->d_parent->d_name.name, | |
2215 | dentry->d_name.name, | |
2216 | (unsigned long long)cookie); | |
1da177e4 LT |
2217 | nfs4_setup_readdir(cookie, NFS_COOKIEVERF(dir), dentry, &args); |
2218 | res.pgbase = args.pgbase; | |
2219 | status = rpc_call_sync(NFS_CLIENT(dir), &msg, 0); | |
2220 | if (status == 0) | |
2221 | memcpy(NFS_COOKIEVERF(dir), res.verifier.data, NFS4_VERIFIER_SIZE); | |
c4812998 TM |
2222 | |
2223 | nfs_invalidate_atime(dir); | |
2224 | ||
eadf4598 | 2225 | dprintk("%s: returns %d\n", __FUNCTION__, status); |
1da177e4 LT |
2226 | return status; |
2227 | } | |
2228 | ||
2229 | static int nfs4_proc_readdir(struct dentry *dentry, struct rpc_cred *cred, | |
2230 | u64 cookie, struct page *page, unsigned int count, int plus) | |
2231 | { | |
2232 | struct nfs4_exception exception = { }; | |
2233 | int err; | |
2234 | do { | |
2235 | err = nfs4_handle_exception(NFS_SERVER(dentry->d_inode), | |
2236 | _nfs4_proc_readdir(dentry, cred, cookie, | |
2237 | page, count, plus), | |
2238 | &exception); | |
2239 | } while (exception.retry); | |
2240 | return err; | |
2241 | } | |
2242 | ||
2243 | static int _nfs4_proc_mknod(struct inode *dir, struct dentry *dentry, | |
2244 | struct iattr *sattr, dev_t rdev) | |
2245 | { | |
2246 | struct nfs_server *server = NFS_SERVER(dir); | |
2247 | struct nfs_fh fh; | |
56ae19f3 | 2248 | struct nfs_fattr fattr, dir_fattr; |
1da177e4 LT |
2249 | struct nfs4_create_arg arg = { |
2250 | .dir_fh = NFS_FH(dir), | |
2251 | .server = server, | |
2252 | .name = &dentry->d_name, | |
2253 | .attrs = sattr, | |
2254 | .bitmask = server->attr_bitmask, | |
2255 | }; | |
2256 | struct nfs4_create_res res = { | |
2257 | .server = server, | |
2258 | .fh = &fh, | |
2259 | .fattr = &fattr, | |
56ae19f3 | 2260 | .dir_fattr = &dir_fattr, |
1da177e4 LT |
2261 | }; |
2262 | struct rpc_message msg = { | |
2263 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_CREATE], | |
2264 | .rpc_argp = &arg, | |
2265 | .rpc_resp = &res, | |
2266 | }; | |
2267 | int status; | |
2268 | int mode = sattr->ia_mode; | |
2269 | ||
0e574af1 | 2270 | nfs_fattr_init(&fattr); |
56ae19f3 | 2271 | nfs_fattr_init(&dir_fattr); |
1da177e4 LT |
2272 | |
2273 | BUG_ON(!(sattr->ia_valid & ATTR_MODE)); | |
2274 | BUG_ON(!S_ISFIFO(mode) && !S_ISBLK(mode) && !S_ISCHR(mode) && !S_ISSOCK(mode)); | |
2275 | if (S_ISFIFO(mode)) | |
2276 | arg.ftype = NF4FIFO; | |
2277 | else if (S_ISBLK(mode)) { | |
2278 | arg.ftype = NF4BLK; | |
2279 | arg.u.device.specdata1 = MAJOR(rdev); | |
2280 | arg.u.device.specdata2 = MINOR(rdev); | |
2281 | } | |
2282 | else if (S_ISCHR(mode)) { | |
2283 | arg.ftype = NF4CHR; | |
2284 | arg.u.device.specdata1 = MAJOR(rdev); | |
2285 | arg.u.device.specdata2 = MINOR(rdev); | |
2286 | } | |
2287 | else | |
2288 | arg.ftype = NF4SOCK; | |
2289 | ||
2290 | status = rpc_call_sync(NFS_CLIENT(dir), &msg, 0); | |
2291 | if (status == 0) { | |
2292 | update_changeattr(dir, &res.dir_cinfo); | |
56ae19f3 | 2293 | nfs_post_op_update_inode(dir, res.dir_fattr); |
1da177e4 LT |
2294 | status = nfs_instantiate(dentry, &fh, &fattr); |
2295 | } | |
2296 | return status; | |
2297 | } | |
2298 | ||
2299 | static int nfs4_proc_mknod(struct inode *dir, struct dentry *dentry, | |
2300 | struct iattr *sattr, dev_t rdev) | |
2301 | { | |
2302 | struct nfs4_exception exception = { }; | |
2303 | int err; | |
2304 | do { | |
2305 | err = nfs4_handle_exception(NFS_SERVER(dir), | |
2306 | _nfs4_proc_mknod(dir, dentry, sattr, rdev), | |
2307 | &exception); | |
2308 | } while (exception.retry); | |
2309 | return err; | |
2310 | } | |
2311 | ||
2312 | static int _nfs4_proc_statfs(struct nfs_server *server, struct nfs_fh *fhandle, | |
2313 | struct nfs_fsstat *fsstat) | |
2314 | { | |
2315 | struct nfs4_statfs_arg args = { | |
2316 | .fh = fhandle, | |
2317 | .bitmask = server->attr_bitmask, | |
2318 | }; | |
2319 | struct rpc_message msg = { | |
2320 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_STATFS], | |
2321 | .rpc_argp = &args, | |
2322 | .rpc_resp = fsstat, | |
2323 | }; | |
2324 | ||
0e574af1 | 2325 | nfs_fattr_init(fsstat->fattr); |
1da177e4 LT |
2326 | return rpc_call_sync(server->client, &msg, 0); |
2327 | } | |
2328 | ||
2329 | static int nfs4_proc_statfs(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fsstat *fsstat) | |
2330 | { | |
2331 | struct nfs4_exception exception = { }; | |
2332 | int err; | |
2333 | do { | |
2334 | err = nfs4_handle_exception(server, | |
2335 | _nfs4_proc_statfs(server, fhandle, fsstat), | |
2336 | &exception); | |
2337 | } while (exception.retry); | |
2338 | return err; | |
2339 | } | |
2340 | ||
2341 | static int _nfs4_do_fsinfo(struct nfs_server *server, struct nfs_fh *fhandle, | |
2342 | struct nfs_fsinfo *fsinfo) | |
2343 | { | |
2344 | struct nfs4_fsinfo_arg args = { | |
2345 | .fh = fhandle, | |
2346 | .bitmask = server->attr_bitmask, | |
2347 | }; | |
2348 | struct rpc_message msg = { | |
2349 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_FSINFO], | |
2350 | .rpc_argp = &args, | |
2351 | .rpc_resp = fsinfo, | |
2352 | }; | |
2353 | ||
2354 | return rpc_call_sync(server->client, &msg, 0); | |
2355 | } | |
2356 | ||
2357 | static int nfs4_do_fsinfo(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fsinfo *fsinfo) | |
2358 | { | |
2359 | struct nfs4_exception exception = { }; | |
2360 | int err; | |
2361 | ||
2362 | do { | |
2363 | err = nfs4_handle_exception(server, | |
2364 | _nfs4_do_fsinfo(server, fhandle, fsinfo), | |
2365 | &exception); | |
2366 | } while (exception.retry); | |
2367 | return err; | |
2368 | } | |
2369 | ||
2370 | static int nfs4_proc_fsinfo(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fsinfo *fsinfo) | |
2371 | { | |
0e574af1 | 2372 | nfs_fattr_init(fsinfo->fattr); |
1da177e4 LT |
2373 | return nfs4_do_fsinfo(server, fhandle, fsinfo); |
2374 | } | |
2375 | ||
2376 | static int _nfs4_proc_pathconf(struct nfs_server *server, struct nfs_fh *fhandle, | |
2377 | struct nfs_pathconf *pathconf) | |
2378 | { | |
2379 | struct nfs4_pathconf_arg args = { | |
2380 | .fh = fhandle, | |
2381 | .bitmask = server->attr_bitmask, | |
2382 | }; | |
2383 | struct rpc_message msg = { | |
2384 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_PATHCONF], | |
2385 | .rpc_argp = &args, | |
2386 | .rpc_resp = pathconf, | |
2387 | }; | |
2388 | ||
2389 | /* None of the pathconf attributes are mandatory to implement */ | |
2390 | if ((args.bitmask[0] & nfs4_pathconf_bitmap[0]) == 0) { | |
2391 | memset(pathconf, 0, sizeof(*pathconf)); | |
2392 | return 0; | |
2393 | } | |
2394 | ||
0e574af1 | 2395 | nfs_fattr_init(pathconf->fattr); |
1da177e4 LT |
2396 | return rpc_call_sync(server->client, &msg, 0); |
2397 | } | |
2398 | ||
2399 | static int nfs4_proc_pathconf(struct nfs_server *server, struct nfs_fh *fhandle, | |
2400 | struct nfs_pathconf *pathconf) | |
2401 | { | |
2402 | struct nfs4_exception exception = { }; | |
2403 | int err; | |
2404 | ||
2405 | do { | |
2406 | err = nfs4_handle_exception(server, | |
2407 | _nfs4_proc_pathconf(server, fhandle, pathconf), | |
2408 | &exception); | |
2409 | } while (exception.retry); | |
2410 | return err; | |
2411 | } | |
2412 | ||
ec06c096 | 2413 | static int nfs4_read_done(struct rpc_task *task, struct nfs_read_data *data) |
1da177e4 | 2414 | { |
ec06c096 | 2415 | struct nfs_server *server = NFS_SERVER(data->inode); |
1da177e4 | 2416 | |
ec06c096 | 2417 | if (nfs4_async_handle_error(task, server) == -EAGAIN) { |
1da177e4 | 2418 | rpc_restart_call(task); |
ec06c096 | 2419 | return -EAGAIN; |
1da177e4 | 2420 | } |
8850df99 TM |
2421 | |
2422 | nfs_invalidate_atime(data->inode); | |
1da177e4 | 2423 | if (task->tk_status > 0) |
ec06c096 TM |
2424 | renew_lease(server, data->timestamp); |
2425 | return 0; | |
1da177e4 LT |
2426 | } |
2427 | ||
bdc7f021 | 2428 | static void nfs4_proc_read_setup(struct nfs_read_data *data, struct rpc_message *msg) |
1da177e4 | 2429 | { |
1da177e4 | 2430 | data->timestamp = jiffies; |
bdc7f021 | 2431 | msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_READ]; |
1da177e4 LT |
2432 | } |
2433 | ||
788e7a89 | 2434 | static int nfs4_write_done(struct rpc_task *task, struct nfs_write_data *data) |
1da177e4 | 2435 | { |
1da177e4 LT |
2436 | struct inode *inode = data->inode; |
2437 | ||
2438 | if (nfs4_async_handle_error(task, NFS_SERVER(inode)) == -EAGAIN) { | |
2439 | rpc_restart_call(task); | |
788e7a89 | 2440 | return -EAGAIN; |
1da177e4 | 2441 | } |
4f9838c7 | 2442 | if (task->tk_status >= 0) { |
1da177e4 | 2443 | renew_lease(NFS_SERVER(inode), data->timestamp); |
70ca8852 | 2444 | nfs_post_op_update_inode_force_wcc(inode, data->res.fattr); |
4f9838c7 | 2445 | } |
788e7a89 | 2446 | return 0; |
1da177e4 LT |
2447 | } |
2448 | ||
bdc7f021 | 2449 | static void nfs4_proc_write_setup(struct nfs_write_data *data, struct rpc_message *msg) |
1da177e4 | 2450 | { |
bdc7f021 TM |
2451 | struct nfs_server *server = NFS_SERVER(data->inode); |
2452 | ||
4f9838c7 TM |
2453 | data->args.bitmask = server->attr_bitmask; |
2454 | data->res.server = server; | |
1da177e4 LT |
2455 | data->timestamp = jiffies; |
2456 | ||
bdc7f021 | 2457 | msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_WRITE]; |
1da177e4 LT |
2458 | } |
2459 | ||
788e7a89 | 2460 | static int nfs4_commit_done(struct rpc_task *task, struct nfs_write_data *data) |
1da177e4 | 2461 | { |
1da177e4 LT |
2462 | struct inode *inode = data->inode; |
2463 | ||
2464 | if (nfs4_async_handle_error(task, NFS_SERVER(inode)) == -EAGAIN) { | |
2465 | rpc_restart_call(task); | |
788e7a89 | 2466 | return -EAGAIN; |
1da177e4 | 2467 | } |
9e08a3c5 | 2468 | nfs_refresh_inode(inode, data->res.fattr); |
788e7a89 | 2469 | return 0; |
1da177e4 LT |
2470 | } |
2471 | ||
bdc7f021 | 2472 | static void nfs4_proc_commit_setup(struct nfs_write_data *data, struct rpc_message *msg) |
1da177e4 | 2473 | { |
788e7a89 | 2474 | struct nfs_server *server = NFS_SERVER(data->inode); |
1da177e4 | 2475 | |
4f9838c7 TM |
2476 | data->args.bitmask = server->attr_bitmask; |
2477 | data->res.server = server; | |
bdc7f021 | 2478 | msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_COMMIT]; |
1da177e4 LT |
2479 | } |
2480 | ||
2481 | /* | |
2482 | * nfs4_proc_async_renew(): This is not one of the nfs_rpc_ops; it is a special | |
2483 | * standalone procedure for queueing an asynchronous RENEW. | |
2484 | */ | |
963d8fe5 | 2485 | static void nfs4_renew_done(struct rpc_task *task, void *data) |
1da177e4 | 2486 | { |
adfa6f98 | 2487 | struct nfs_client *clp = (struct nfs_client *)task->tk_msg.rpc_argp; |
963d8fe5 | 2488 | unsigned long timestamp = (unsigned long)data; |
1da177e4 LT |
2489 | |
2490 | if (task->tk_status < 0) { | |
2491 | switch (task->tk_status) { | |
2492 | case -NFS4ERR_STALE_CLIENTID: | |
2493 | case -NFS4ERR_EXPIRED: | |
2494 | case -NFS4ERR_CB_PATH_DOWN: | |
2495 | nfs4_schedule_state_recovery(clp); | |
2496 | } | |
2497 | return; | |
2498 | } | |
2499 | spin_lock(&clp->cl_lock); | |
2500 | if (time_before(clp->cl_last_renewal,timestamp)) | |
2501 | clp->cl_last_renewal = timestamp; | |
2502 | spin_unlock(&clp->cl_lock); | |
2503 | } | |
2504 | ||
963d8fe5 TM |
2505 | static const struct rpc_call_ops nfs4_renew_ops = { |
2506 | .rpc_call_done = nfs4_renew_done, | |
2507 | }; | |
2508 | ||
adfa6f98 | 2509 | int nfs4_proc_async_renew(struct nfs_client *clp, struct rpc_cred *cred) |
1da177e4 LT |
2510 | { |
2511 | struct rpc_message msg = { | |
2512 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RENEW], | |
2513 | .rpc_argp = clp, | |
b4454fe1 | 2514 | .rpc_cred = cred, |
1da177e4 LT |
2515 | }; |
2516 | ||
2517 | return rpc_call_async(clp->cl_rpcclient, &msg, RPC_TASK_SOFT, | |
963d8fe5 | 2518 | &nfs4_renew_ops, (void *)jiffies); |
1da177e4 LT |
2519 | } |
2520 | ||
adfa6f98 | 2521 | int nfs4_proc_renew(struct nfs_client *clp, struct rpc_cred *cred) |
1da177e4 LT |
2522 | { |
2523 | struct rpc_message msg = { | |
2524 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RENEW], | |
2525 | .rpc_argp = clp, | |
b4454fe1 | 2526 | .rpc_cred = cred, |
1da177e4 LT |
2527 | }; |
2528 | unsigned long now = jiffies; | |
2529 | int status; | |
2530 | ||
2531 | status = rpc_call_sync(clp->cl_rpcclient, &msg, 0); | |
2532 | if (status < 0) | |
2533 | return status; | |
2534 | spin_lock(&clp->cl_lock); | |
2535 | if (time_before(clp->cl_last_renewal,now)) | |
2536 | clp->cl_last_renewal = now; | |
2537 | spin_unlock(&clp->cl_lock); | |
2538 | return 0; | |
2539 | } | |
2540 | ||
aa1870af BF |
2541 | static inline int nfs4_server_supports_acls(struct nfs_server *server) |
2542 | { | |
2543 | return (server->caps & NFS_CAP_ACLS) | |
2544 | && (server->acl_bitmask & ACL4_SUPPORT_ALLOW_ACL) | |
2545 | && (server->acl_bitmask & ACL4_SUPPORT_DENY_ACL); | |
2546 | } | |
2547 | ||
2548 | /* Assuming that XATTR_SIZE_MAX is a multiple of PAGE_CACHE_SIZE, and that | |
2549 | * it's OK to put sizeof(void) * (XATTR_SIZE_MAX/PAGE_CACHE_SIZE) bytes on | |
2550 | * the stack. | |
2551 | */ | |
2552 | #define NFS4ACL_MAXPAGES (XATTR_SIZE_MAX >> PAGE_CACHE_SHIFT) | |
2553 | ||
2554 | static void buf_to_pages(const void *buf, size_t buflen, | |
2555 | struct page **pages, unsigned int *pgbase) | |
2556 | { | |
2557 | const void *p = buf; | |
2558 | ||
2559 | *pgbase = offset_in_page(buf); | |
2560 | p -= *pgbase; | |
2561 | while (p < buf + buflen) { | |
2562 | *(pages++) = virt_to_page(p); | |
2563 | p += PAGE_CACHE_SIZE; | |
2564 | } | |
2565 | } | |
2566 | ||
e50a1c2e BF |
2567 | struct nfs4_cached_acl { |
2568 | int cached; | |
2569 | size_t len; | |
3e9d4154 | 2570 | char data[0]; |
e50a1c2e BF |
2571 | }; |
2572 | ||
2573 | static void nfs4_set_cached_acl(struct inode *inode, struct nfs4_cached_acl *acl) | |
2574 | { | |
2575 | struct nfs_inode *nfsi = NFS_I(inode); | |
2576 | ||
2577 | spin_lock(&inode->i_lock); | |
2578 | kfree(nfsi->nfs4_acl); | |
2579 | nfsi->nfs4_acl = acl; | |
2580 | spin_unlock(&inode->i_lock); | |
2581 | } | |
2582 | ||
2583 | static void nfs4_zap_acl_attr(struct inode *inode) | |
2584 | { | |
2585 | nfs4_set_cached_acl(inode, NULL); | |
2586 | } | |
2587 | ||
2588 | static inline ssize_t nfs4_read_cached_acl(struct inode *inode, char *buf, size_t buflen) | |
2589 | { | |
2590 | struct nfs_inode *nfsi = NFS_I(inode); | |
2591 | struct nfs4_cached_acl *acl; | |
2592 | int ret = -ENOENT; | |
2593 | ||
2594 | spin_lock(&inode->i_lock); | |
2595 | acl = nfsi->nfs4_acl; | |
2596 | if (acl == NULL) | |
2597 | goto out; | |
2598 | if (buf == NULL) /* user is just asking for length */ | |
2599 | goto out_len; | |
2600 | if (acl->cached == 0) | |
2601 | goto out; | |
2602 | ret = -ERANGE; /* see getxattr(2) man page */ | |
2603 | if (acl->len > buflen) | |
2604 | goto out; | |
2605 | memcpy(buf, acl->data, acl->len); | |
2606 | out_len: | |
2607 | ret = acl->len; | |
2608 | out: | |
2609 | spin_unlock(&inode->i_lock); | |
2610 | return ret; | |
2611 | } | |
2612 | ||
2613 | static void nfs4_write_cached_acl(struct inode *inode, const char *buf, size_t acl_len) | |
2614 | { | |
2615 | struct nfs4_cached_acl *acl; | |
2616 | ||
2617 | if (buf && acl_len <= PAGE_SIZE) { | |
2618 | acl = kmalloc(sizeof(*acl) + acl_len, GFP_KERNEL); | |
2619 | if (acl == NULL) | |
2620 | goto out; | |
2621 | acl->cached = 1; | |
2622 | memcpy(acl->data, buf, acl_len); | |
2623 | } else { | |
2624 | acl = kmalloc(sizeof(*acl), GFP_KERNEL); | |
2625 | if (acl == NULL) | |
2626 | goto out; | |
2627 | acl->cached = 0; | |
2628 | } | |
2629 | acl->len = acl_len; | |
2630 | out: | |
2631 | nfs4_set_cached_acl(inode, acl); | |
2632 | } | |
2633 | ||
16b4289c | 2634 | static ssize_t __nfs4_get_acl_uncached(struct inode *inode, void *buf, size_t buflen) |
aa1870af | 2635 | { |
aa1870af BF |
2636 | struct page *pages[NFS4ACL_MAXPAGES]; |
2637 | struct nfs_getaclargs args = { | |
2638 | .fh = NFS_FH(inode), | |
2639 | .acl_pages = pages, | |
2640 | .acl_len = buflen, | |
2641 | }; | |
2642 | size_t resp_len = buflen; | |
e50a1c2e | 2643 | void *resp_buf; |
aa1870af BF |
2644 | struct rpc_message msg = { |
2645 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GETACL], | |
2646 | .rpc_argp = &args, | |
2647 | .rpc_resp = &resp_len, | |
2648 | }; | |
e50a1c2e | 2649 | struct page *localpage = NULL; |
aa1870af BF |
2650 | int ret; |
2651 | ||
e50a1c2e BF |
2652 | if (buflen < PAGE_SIZE) { |
2653 | /* As long as we're doing a round trip to the server anyway, | |
2654 | * let's be prepared for a page of acl data. */ | |
2655 | localpage = alloc_page(GFP_KERNEL); | |
2656 | resp_buf = page_address(localpage); | |
2657 | if (localpage == NULL) | |
2658 | return -ENOMEM; | |
2659 | args.acl_pages[0] = localpage; | |
2660 | args.acl_pgbase = 0; | |
1d95db8e | 2661 | resp_len = args.acl_len = PAGE_SIZE; |
e50a1c2e BF |
2662 | } else { |
2663 | resp_buf = buf; | |
2664 | buf_to_pages(buf, buflen, args.acl_pages, &args.acl_pgbase); | |
2665 | } | |
aa1870af | 2666 | ret = rpc_call_sync(NFS_CLIENT(inode), &msg, 0); |
e50a1c2e BF |
2667 | if (ret) |
2668 | goto out_free; | |
2669 | if (resp_len > args.acl_len) | |
2670 | nfs4_write_cached_acl(inode, NULL, resp_len); | |
2671 | else | |
2672 | nfs4_write_cached_acl(inode, resp_buf, resp_len); | |
2673 | if (buf) { | |
2674 | ret = -ERANGE; | |
2675 | if (resp_len > buflen) | |
2676 | goto out_free; | |
2677 | if (localpage) | |
2678 | memcpy(buf, resp_buf, resp_len); | |
2679 | } | |
2680 | ret = resp_len; | |
2681 | out_free: | |
2682 | if (localpage) | |
2683 | __free_page(localpage); | |
aa1870af BF |
2684 | return ret; |
2685 | } | |
2686 | ||
16b4289c TM |
2687 | static ssize_t nfs4_get_acl_uncached(struct inode *inode, void *buf, size_t buflen) |
2688 | { | |
2689 | struct nfs4_exception exception = { }; | |
2690 | ssize_t ret; | |
2691 | do { | |
2692 | ret = __nfs4_get_acl_uncached(inode, buf, buflen); | |
2693 | if (ret >= 0) | |
2694 | break; | |
2695 | ret = nfs4_handle_exception(NFS_SERVER(inode), ret, &exception); | |
2696 | } while (exception.retry); | |
2697 | return ret; | |
2698 | } | |
2699 | ||
e50a1c2e BF |
2700 | static ssize_t nfs4_proc_get_acl(struct inode *inode, void *buf, size_t buflen) |
2701 | { | |
2702 | struct nfs_server *server = NFS_SERVER(inode); | |
2703 | int ret; | |
2704 | ||
2705 | if (!nfs4_server_supports_acls(server)) | |
2706 | return -EOPNOTSUPP; | |
2707 | ret = nfs_revalidate_inode(server, inode); | |
2708 | if (ret < 0) | |
2709 | return ret; | |
2710 | ret = nfs4_read_cached_acl(inode, buf, buflen); | |
2711 | if (ret != -ENOENT) | |
2712 | return ret; | |
2713 | return nfs4_get_acl_uncached(inode, buf, buflen); | |
2714 | } | |
2715 | ||
16b4289c | 2716 | static int __nfs4_proc_set_acl(struct inode *inode, const void *buf, size_t buflen) |
4b580ee3 BF |
2717 | { |
2718 | struct nfs_server *server = NFS_SERVER(inode); | |
2719 | struct page *pages[NFS4ACL_MAXPAGES]; | |
2720 | struct nfs_setaclargs arg = { | |
2721 | .fh = NFS_FH(inode), | |
2722 | .acl_pages = pages, | |
2723 | .acl_len = buflen, | |
2724 | }; | |
2725 | struct rpc_message msg = { | |
2726 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SETACL], | |
2727 | .rpc_argp = &arg, | |
2728 | .rpc_resp = NULL, | |
2729 | }; | |
2730 | int ret; | |
2731 | ||
2732 | if (!nfs4_server_supports_acls(server)) | |
2733 | return -EOPNOTSUPP; | |
642ac549 | 2734 | nfs_inode_return_delegation(inode); |
4b580ee3 | 2735 | buf_to_pages(buf, buflen, arg.acl_pages, &arg.acl_pgbase); |
1f163415 | 2736 | ret = rpc_call_sync(NFS_CLIENT(inode), &msg, 0); |
08efa202 | 2737 | nfs_zap_caches(inode); |
4b580ee3 BF |
2738 | return ret; |
2739 | } | |
2740 | ||
16b4289c TM |
2741 | static int nfs4_proc_set_acl(struct inode *inode, const void *buf, size_t buflen) |
2742 | { | |
2743 | struct nfs4_exception exception = { }; | |
2744 | int err; | |
2745 | do { | |
2746 | err = nfs4_handle_exception(NFS_SERVER(inode), | |
2747 | __nfs4_proc_set_acl(inode, buf, buflen), | |
2748 | &exception); | |
2749 | } while (exception.retry); | |
2750 | return err; | |
2751 | } | |
2752 | ||
1da177e4 | 2753 | static int |
faf5f49c | 2754 | nfs4_async_handle_error(struct rpc_task *task, const struct nfs_server *server) |
1da177e4 | 2755 | { |
7539bbab | 2756 | struct nfs_client *clp = server->nfs_client; |
1da177e4 LT |
2757 | |
2758 | if (!clp || task->tk_status >= 0) | |
2759 | return 0; | |
2760 | switch(task->tk_status) { | |
2761 | case -NFS4ERR_STALE_CLIENTID: | |
2762 | case -NFS4ERR_STALE_STATEID: | |
2763 | case -NFS4ERR_EXPIRED: | |
2764 | rpc_sleep_on(&clp->cl_rpcwaitq, task, NULL, NULL); | |
2765 | nfs4_schedule_state_recovery(clp); | |
433fbe4c | 2766 | if (test_bit(NFS4CLNT_STATE_RECOVER, &clp->cl_state) == 0) |
1da177e4 LT |
2767 | rpc_wake_up_task(task); |
2768 | task->tk_status = 0; | |
2769 | return -EAGAIN; | |
1da177e4 | 2770 | case -NFS4ERR_DELAY: |
006ea73e CL |
2771 | nfs_inc_server_stats((struct nfs_server *) server, |
2772 | NFSIOS_DELAY); | |
2773 | case -NFS4ERR_GRACE: | |
1da177e4 LT |
2774 | rpc_delay(task, NFS4_POLL_RETRY_MAX); |
2775 | task->tk_status = 0; | |
2776 | return -EAGAIN; | |
2777 | case -NFS4ERR_OLD_STATEID: | |
2778 | task->tk_status = 0; | |
2779 | return -EAGAIN; | |
2780 | } | |
2781 | task->tk_status = nfs4_map_errors(task->tk_status); | |
2782 | return 0; | |
2783 | } | |
2784 | ||
150030b7 | 2785 | static int nfs4_wait_bit_killable(void *word) |
433fbe4c | 2786 | { |
150030b7 | 2787 | if (fatal_signal_pending(current)) |
433fbe4c TM |
2788 | return -ERESTARTSYS; |
2789 | schedule(); | |
2790 | return 0; | |
2791 | } | |
2792 | ||
adfa6f98 | 2793 | static int nfs4_wait_clnt_recover(struct rpc_clnt *clnt, struct nfs_client *clp) |
1da177e4 | 2794 | { |
433fbe4c | 2795 | int res; |
1da177e4 LT |
2796 | |
2797 | might_sleep(); | |
2798 | ||
e148582e TM |
2799 | rwsem_acquire(&clp->cl_sem.dep_map, 0, 0, _RET_IP_); |
2800 | ||
433fbe4c | 2801 | res = wait_on_bit(&clp->cl_state, NFS4CLNT_STATE_RECOVER, |
150030b7 | 2802 | nfs4_wait_bit_killable, TASK_KILLABLE); |
e148582e TM |
2803 | |
2804 | rwsem_release(&clp->cl_sem.dep_map, 1, _RET_IP_); | |
1da177e4 LT |
2805 | return res; |
2806 | } | |
2807 | ||
2808 | static int nfs4_delay(struct rpc_clnt *clnt, long *timeout) | |
2809 | { | |
1da177e4 LT |
2810 | int res = 0; |
2811 | ||
2812 | might_sleep(); | |
2813 | ||
2814 | if (*timeout <= 0) | |
2815 | *timeout = NFS4_POLL_RETRY_MIN; | |
2816 | if (*timeout > NFS4_POLL_RETRY_MAX) | |
2817 | *timeout = NFS4_POLL_RETRY_MAX; | |
150030b7 MW |
2818 | schedule_timeout_killable(*timeout); |
2819 | if (fatal_signal_pending(current)) | |
2820 | res = -ERESTARTSYS; | |
1da177e4 LT |
2821 | *timeout <<= 1; |
2822 | return res; | |
2823 | } | |
2824 | ||
2825 | /* This is the error handling routine for processes that are allowed | |
2826 | * to sleep. | |
2827 | */ | |
10afec90 | 2828 | static int nfs4_handle_exception(const struct nfs_server *server, int errorcode, struct nfs4_exception *exception) |
1da177e4 | 2829 | { |
7539bbab | 2830 | struct nfs_client *clp = server->nfs_client; |
1da177e4 LT |
2831 | int ret = errorcode; |
2832 | ||
2833 | exception->retry = 0; | |
2834 | switch(errorcode) { | |
2835 | case 0: | |
2836 | return 0; | |
2837 | case -NFS4ERR_STALE_CLIENTID: | |
2838 | case -NFS4ERR_STALE_STATEID: | |
2839 | case -NFS4ERR_EXPIRED: | |
433fbe4c | 2840 | nfs4_schedule_state_recovery(clp); |
1da177e4 LT |
2841 | ret = nfs4_wait_clnt_recover(server->client, clp); |
2842 | if (ret == 0) | |
2843 | exception->retry = 1; | |
2844 | break; | |
c514983d | 2845 | case -NFS4ERR_FILE_OPEN: |
1da177e4 LT |
2846 | case -NFS4ERR_GRACE: |
2847 | case -NFS4ERR_DELAY: | |
2848 | ret = nfs4_delay(server->client, &exception->timeout); | |
2c56617d TM |
2849 | if (ret != 0) |
2850 | break; | |
1da177e4 | 2851 | case -NFS4ERR_OLD_STATEID: |
2c56617d | 2852 | exception->retry = 1; |
1da177e4 LT |
2853 | } |
2854 | /* We failed to handle the error */ | |
2855 | return nfs4_map_errors(ret); | |
2856 | } | |
2857 | ||
adfa6f98 | 2858 | int nfs4_proc_setclientid(struct nfs_client *clp, u32 program, unsigned short port, struct rpc_cred *cred) |
1da177e4 LT |
2859 | { |
2860 | nfs4_verifier sc_verifier; | |
2861 | struct nfs4_setclientid setclientid = { | |
2862 | .sc_verifier = &sc_verifier, | |
2863 | .sc_prog = program, | |
2864 | }; | |
2865 | struct rpc_message msg = { | |
2866 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SETCLIENTID], | |
2867 | .rpc_argp = &setclientid, | |
2868 | .rpc_resp = clp, | |
286d7d6a | 2869 | .rpc_cred = cred, |
1da177e4 | 2870 | }; |
bc4785cd | 2871 | __be32 *p; |
1da177e4 LT |
2872 | int loop = 0; |
2873 | int status; | |
2874 | ||
bc4785cd | 2875 | p = (__be32*)sc_verifier.data; |
1da177e4 LT |
2876 | *p++ = htonl((u32)clp->cl_boot_time.tv_sec); |
2877 | *p = htonl((u32)clp->cl_boot_time.tv_nsec); | |
2878 | ||
2879 | for(;;) { | |
2880 | setclientid.sc_name_len = scnprintf(setclientid.sc_name, | |
69dd716c | 2881 | sizeof(setclientid.sc_name), "%s/%s %s %s %u", |
d4d3c507 CL |
2882 | clp->cl_ipaddr, |
2883 | rpc_peeraddr2str(clp->cl_rpcclient, | |
2884 | RPC_DISPLAY_ADDR), | |
69dd716c TM |
2885 | rpc_peeraddr2str(clp->cl_rpcclient, |
2886 | RPC_DISPLAY_PROTO), | |
286d7d6a | 2887 | cred->cr_ops->cr_name, |
1da177e4 LT |
2888 | clp->cl_id_uniquifier); |
2889 | setclientid.sc_netid_len = scnprintf(setclientid.sc_netid, | |
d4d3c507 CL |
2890 | sizeof(setclientid.sc_netid), |
2891 | rpc_peeraddr2str(clp->cl_rpcclient, | |
2892 | RPC_DISPLAY_NETID)); | |
1da177e4 | 2893 | setclientid.sc_uaddr_len = scnprintf(setclientid.sc_uaddr, |
d4d3c507 | 2894 | sizeof(setclientid.sc_uaddr), "%s.%u.%u", |
1da177e4 LT |
2895 | clp->cl_ipaddr, port >> 8, port & 255); |
2896 | ||
2897 | status = rpc_call_sync(clp->cl_rpcclient, &msg, 0); | |
2898 | if (status != -NFS4ERR_CLID_INUSE) | |
2899 | break; | |
2900 | if (signalled()) | |
2901 | break; | |
2902 | if (loop++ & 1) | |
2903 | ssleep(clp->cl_lease_time + 1); | |
2904 | else | |
2905 | if (++clp->cl_id_uniquifier == 0) | |
2906 | break; | |
2907 | } | |
2908 | return status; | |
2909 | } | |
2910 | ||
adfa6f98 | 2911 | static int _nfs4_proc_setclientid_confirm(struct nfs_client *clp, struct rpc_cred *cred) |
1da177e4 LT |
2912 | { |
2913 | struct nfs_fsinfo fsinfo; | |
2914 | struct rpc_message msg = { | |
2915 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SETCLIENTID_CONFIRM], | |
2916 | .rpc_argp = clp, | |
2917 | .rpc_resp = &fsinfo, | |
286d7d6a | 2918 | .rpc_cred = cred, |
1da177e4 LT |
2919 | }; |
2920 | unsigned long now; | |
2921 | int status; | |
2922 | ||
2923 | now = jiffies; | |
2924 | status = rpc_call_sync(clp->cl_rpcclient, &msg, 0); | |
2925 | if (status == 0) { | |
2926 | spin_lock(&clp->cl_lock); | |
2927 | clp->cl_lease_time = fsinfo.lease_time * HZ; | |
2928 | clp->cl_last_renewal = now; | |
58d9714a | 2929 | clear_bit(NFS4CLNT_LEASE_EXPIRED, &clp->cl_state); |
1da177e4 LT |
2930 | spin_unlock(&clp->cl_lock); |
2931 | } | |
2932 | return status; | |
2933 | } | |
2934 | ||
adfa6f98 | 2935 | int nfs4_proc_setclientid_confirm(struct nfs_client *clp, struct rpc_cred *cred) |
51581f3b TM |
2936 | { |
2937 | long timeout; | |
2938 | int err; | |
2939 | do { | |
2940 | err = _nfs4_proc_setclientid_confirm(clp, cred); | |
2941 | switch (err) { | |
2942 | case 0: | |
2943 | return err; | |
2944 | case -NFS4ERR_RESOURCE: | |
2945 | /* The IBM lawyers misread another document! */ | |
2946 | case -NFS4ERR_DELAY: | |
2947 | err = nfs4_delay(clp->cl_rpcclient, &timeout); | |
2948 | } | |
2949 | } while (err == 0); | |
2950 | return err; | |
2951 | } | |
2952 | ||
fe650407 TM |
2953 | struct nfs4_delegreturndata { |
2954 | struct nfs4_delegreturnargs args; | |
fa178f29 | 2955 | struct nfs4_delegreturnres res; |
fe650407 TM |
2956 | struct nfs_fh fh; |
2957 | nfs4_stateid stateid; | |
26e976a8 | 2958 | unsigned long timestamp; |
fa178f29 | 2959 | struct nfs_fattr fattr; |
fe650407 TM |
2960 | int rpc_status; |
2961 | }; | |
2962 | ||
fe650407 TM |
2963 | static void nfs4_delegreturn_done(struct rpc_task *task, void *calldata) |
2964 | { | |
2965 | struct nfs4_delegreturndata *data = calldata; | |
2966 | data->rpc_status = task->tk_status; | |
26e976a8 | 2967 | if (data->rpc_status == 0) |
fa178f29 | 2968 | renew_lease(data->res.server, data->timestamp); |
fe650407 TM |
2969 | } |
2970 | ||
2971 | static void nfs4_delegreturn_release(void *calldata) | |
2972 | { | |
fe650407 TM |
2973 | kfree(calldata); |
2974 | } | |
2975 | ||
c8d149f3 | 2976 | static const struct rpc_call_ops nfs4_delegreturn_ops = { |
fe650407 TM |
2977 | .rpc_call_done = nfs4_delegreturn_done, |
2978 | .rpc_release = nfs4_delegreturn_release, | |
2979 | }; | |
2980 | ||
e6f81075 | 2981 | static int _nfs4_proc_delegreturn(struct inode *inode, struct rpc_cred *cred, const nfs4_stateid *stateid, int issync) |
fe650407 TM |
2982 | { |
2983 | struct nfs4_delegreturndata *data; | |
fa178f29 | 2984 | struct nfs_server *server = NFS_SERVER(inode); |
fe650407 | 2985 | struct rpc_task *task; |
5138fde0 TM |
2986 | struct rpc_message msg = { |
2987 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_DELEGRETURN], | |
2988 | .rpc_cred = cred, | |
2989 | }; | |
c970aa85 TM |
2990 | struct rpc_task_setup task_setup_data = { |
2991 | .rpc_client = server->client, | |
5138fde0 | 2992 | .rpc_message = &msg, |
c970aa85 TM |
2993 | .callback_ops = &nfs4_delegreturn_ops, |
2994 | .flags = RPC_TASK_ASYNC, | |
2995 | }; | |
e6f81075 | 2996 | int status = 0; |
fe650407 TM |
2997 | |
2998 | data = kmalloc(sizeof(*data), GFP_KERNEL); | |
2999 | if (data == NULL) | |
3000 | return -ENOMEM; | |
3001 | data->args.fhandle = &data->fh; | |
3002 | data->args.stateid = &data->stateid; | |
fa178f29 | 3003 | data->args.bitmask = server->attr_bitmask; |
fe650407 TM |
3004 | nfs_copy_fh(&data->fh, NFS_FH(inode)); |
3005 | memcpy(&data->stateid, stateid, sizeof(data->stateid)); | |
fa178f29 TM |
3006 | data->res.fattr = &data->fattr; |
3007 | data->res.server = server; | |
5138fde0 | 3008 | nfs_fattr_init(data->res.fattr); |
26e976a8 | 3009 | data->timestamp = jiffies; |
fe650407 TM |
3010 | data->rpc_status = 0; |
3011 | ||
c970aa85 | 3012 | task_setup_data.callback_data = data; |
5138fde0 TM |
3013 | msg.rpc_argp = &data->args, |
3014 | msg.rpc_resp = &data->res, | |
c970aa85 | 3015 | task = rpc_run_task(&task_setup_data); |
7a1218a2 | 3016 | if (IS_ERR(task)) |
fe650407 | 3017 | return PTR_ERR(task); |
e6f81075 TM |
3018 | if (!issync) |
3019 | goto out; | |
fe650407 | 3020 | status = nfs4_wait_for_completion_rpc_task(task); |
e6f81075 TM |
3021 | if (status != 0) |
3022 | goto out; | |
3023 | status = data->rpc_status; | |
3024 | if (status != 0) | |
3025 | goto out; | |
3026 | nfs_refresh_inode(inode, &data->fattr); | |
3027 | out: | |
e6b3c4db | 3028 | rpc_put_task(task); |
fe650407 | 3029 | return status; |
1da177e4 LT |
3030 | } |
3031 | ||
e6f81075 | 3032 | int nfs4_proc_delegreturn(struct inode *inode, struct rpc_cred *cred, const nfs4_stateid *stateid, int issync) |
1da177e4 LT |
3033 | { |
3034 | struct nfs_server *server = NFS_SERVER(inode); | |
3035 | struct nfs4_exception exception = { }; | |
3036 | int err; | |
3037 | do { | |
e6f81075 | 3038 | err = _nfs4_proc_delegreturn(inode, cred, stateid, issync); |
1da177e4 LT |
3039 | switch (err) { |
3040 | case -NFS4ERR_STALE_STATEID: | |
3041 | case -NFS4ERR_EXPIRED: | |
1da177e4 LT |
3042 | case 0: |
3043 | return 0; | |
3044 | } | |
3045 | err = nfs4_handle_exception(server, err, &exception); | |
3046 | } while (exception.retry); | |
3047 | return err; | |
3048 | } | |
3049 | ||
3050 | #define NFS4_LOCK_MINTIMEOUT (1 * HZ) | |
3051 | #define NFS4_LOCK_MAXTIMEOUT (30 * HZ) | |
3052 | ||
3053 | /* | |
3054 | * sleep, with exponential backoff, and retry the LOCK operation. | |
3055 | */ | |
3056 | static unsigned long | |
3057 | nfs4_set_lock_task_retry(unsigned long timeout) | |
3058 | { | |
150030b7 | 3059 | schedule_timeout_killable(timeout); |
1da177e4 LT |
3060 | timeout <<= 1; |
3061 | if (timeout > NFS4_LOCK_MAXTIMEOUT) | |
3062 | return NFS4_LOCK_MAXTIMEOUT; | |
3063 | return timeout; | |
3064 | } | |
3065 | ||
1da177e4 LT |
3066 | static int _nfs4_proc_getlk(struct nfs4_state *state, int cmd, struct file_lock *request) |
3067 | { | |
3068 | struct inode *inode = state->inode; | |
3069 | struct nfs_server *server = NFS_SERVER(inode); | |
7539bbab | 3070 | struct nfs_client *clp = server->nfs_client; |
911d1aaf | 3071 | struct nfs_lockt_args arg = { |
1da177e4 | 3072 | .fh = NFS_FH(inode), |
911d1aaf | 3073 | .fl = request, |
1da177e4 | 3074 | }; |
911d1aaf TM |
3075 | struct nfs_lockt_res res = { |
3076 | .denied = request, | |
1da177e4 LT |
3077 | }; |
3078 | struct rpc_message msg = { | |
3079 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOCKT], | |
3080 | .rpc_argp = &arg, | |
3081 | .rpc_resp = &res, | |
3082 | .rpc_cred = state->owner->so_cred, | |
3083 | }; | |
1da177e4 LT |
3084 | struct nfs4_lock_state *lsp; |
3085 | int status; | |
3086 | ||
3087 | down_read(&clp->cl_sem); | |
911d1aaf | 3088 | arg.lock_owner.clientid = clp->cl_clientid; |
8d0a8a9d TM |
3089 | status = nfs4_set_lock_state(state, request); |
3090 | if (status != 0) | |
3091 | goto out; | |
3092 | lsp = request->fl_u.nfs4_fl.owner; | |
9f958ab8 | 3093 | arg.lock_owner.id = lsp->ls_id.id; |
1da177e4 | 3094 | status = rpc_call_sync(server->client, &msg, 0); |
911d1aaf TM |
3095 | switch (status) { |
3096 | case 0: | |
3097 | request->fl_type = F_UNLCK; | |
3098 | break; | |
3099 | case -NFS4ERR_DENIED: | |
3100 | status = 0; | |
1da177e4 | 3101 | } |
70cc6487 | 3102 | request->fl_ops->fl_release_private(request); |
8d0a8a9d | 3103 | out: |
1da177e4 LT |
3104 | up_read(&clp->cl_sem); |
3105 | return status; | |
3106 | } | |
3107 | ||
3108 | static int nfs4_proc_getlk(struct nfs4_state *state, int cmd, struct file_lock *request) | |
3109 | { | |
3110 | struct nfs4_exception exception = { }; | |
3111 | int err; | |
3112 | ||
3113 | do { | |
3114 | err = nfs4_handle_exception(NFS_SERVER(state->inode), | |
3115 | _nfs4_proc_getlk(state, cmd, request), | |
3116 | &exception); | |
3117 | } while (exception.retry); | |
3118 | return err; | |
3119 | } | |
3120 | ||
3121 | static int do_vfs_lock(struct file *file, struct file_lock *fl) | |
3122 | { | |
3123 | int res = 0; | |
3124 | switch (fl->fl_flags & (FL_POSIX|FL_FLOCK)) { | |
3125 | case FL_POSIX: | |
3126 | res = posix_lock_file_wait(file, fl); | |
3127 | break; | |
3128 | case FL_FLOCK: | |
3129 | res = flock_lock_file_wait(file, fl); | |
3130 | break; | |
3131 | default: | |
3132 | BUG(); | |
3133 | } | |
1da177e4 LT |
3134 | return res; |
3135 | } | |
3136 | ||
faf5f49c | 3137 | struct nfs4_unlockdata { |
911d1aaf TM |
3138 | struct nfs_locku_args arg; |
3139 | struct nfs_locku_res res; | |
faf5f49c TM |
3140 | struct nfs4_lock_state *lsp; |
3141 | struct nfs_open_context *ctx; | |
911d1aaf TM |
3142 | struct file_lock fl; |
3143 | const struct nfs_server *server; | |
26e976a8 | 3144 | unsigned long timestamp; |
faf5f49c TM |
3145 | }; |
3146 | ||
911d1aaf TM |
3147 | static struct nfs4_unlockdata *nfs4_alloc_unlockdata(struct file_lock *fl, |
3148 | struct nfs_open_context *ctx, | |
3149 | struct nfs4_lock_state *lsp, | |
3150 | struct nfs_seqid *seqid) | |
3151 | { | |
3152 | struct nfs4_unlockdata *p; | |
3153 | struct inode *inode = lsp->ls_state->inode; | |
3154 | ||
3155 | p = kmalloc(sizeof(*p), GFP_KERNEL); | |
3156 | if (p == NULL) | |
3157 | return NULL; | |
3158 | p->arg.fh = NFS_FH(inode); | |
3159 | p->arg.fl = &p->fl; | |
3160 | p->arg.seqid = seqid; | |
3161 | p->arg.stateid = &lsp->ls_stateid; | |
3162 | p->lsp = lsp; | |
3163 | atomic_inc(&lsp->ls_count); | |
3164 | /* Ensure we don't close file until we're done freeing locks! */ | |
3165 | p->ctx = get_nfs_open_context(ctx); | |
3166 | memcpy(&p->fl, fl, sizeof(p->fl)); | |
3167 | p->server = NFS_SERVER(inode); | |
3168 | return p; | |
3169 | } | |
3170 | ||
06f814a3 | 3171 | static void nfs4_locku_release_calldata(void *data) |
faf5f49c | 3172 | { |
963d8fe5 | 3173 | struct nfs4_unlockdata *calldata = data; |
911d1aaf | 3174 | nfs_free_seqid(calldata->arg.seqid); |
06f814a3 TM |
3175 | nfs4_put_lock_state(calldata->lsp); |
3176 | put_nfs_open_context(calldata->ctx); | |
3177 | kfree(calldata); | |
faf5f49c TM |
3178 | } |
3179 | ||
963d8fe5 | 3180 | static void nfs4_locku_done(struct rpc_task *task, void *data) |
faf5f49c | 3181 | { |
963d8fe5 | 3182 | struct nfs4_unlockdata *calldata = data; |
faf5f49c | 3183 | |
06f814a3 TM |
3184 | if (RPC_ASSASSINATED(task)) |
3185 | return; | |
911d1aaf | 3186 | nfs_increment_lock_seqid(task->tk_status, calldata->arg.seqid); |
faf5f49c TM |
3187 | switch (task->tk_status) { |
3188 | case 0: | |
3189 | memcpy(calldata->lsp->ls_stateid.data, | |
911d1aaf | 3190 | calldata->res.stateid.data, |
faf5f49c | 3191 | sizeof(calldata->lsp->ls_stateid.data)); |
26e976a8 | 3192 | renew_lease(calldata->server, calldata->timestamp); |
faf5f49c TM |
3193 | break; |
3194 | case -NFS4ERR_STALE_STATEID: | |
3195 | case -NFS4ERR_EXPIRED: | |
faf5f49c TM |
3196 | break; |
3197 | default: | |
a6a352e9 | 3198 | if (nfs4_async_handle_error(task, calldata->server) == -EAGAIN) |
faf5f49c | 3199 | rpc_restart_call(task); |
faf5f49c | 3200 | } |
faf5f49c TM |
3201 | } |
3202 | ||
4ce70ada | 3203 | static void nfs4_locku_prepare(struct rpc_task *task, void *data) |
faf5f49c | 3204 | { |
4ce70ada | 3205 | struct nfs4_unlockdata *calldata = data; |
faf5f49c | 3206 | |
911d1aaf | 3207 | if (nfs_wait_on_sequence(calldata->arg.seqid, task) != 0) |
faf5f49c TM |
3208 | return; |
3209 | if ((calldata->lsp->ls_flags & NFS_LOCK_INITIALIZED) == 0) { | |
963d8fe5 TM |
3210 | /* Note: exit _without_ running nfs4_locku_done */ |
3211 | task->tk_action = NULL; | |
faf5f49c TM |
3212 | return; |
3213 | } | |
26e976a8 | 3214 | calldata->timestamp = jiffies; |
5138fde0 | 3215 | rpc_call_start(task); |
faf5f49c TM |
3216 | } |
3217 | ||
963d8fe5 | 3218 | static const struct rpc_call_ops nfs4_locku_ops = { |
4ce70ada | 3219 | .rpc_call_prepare = nfs4_locku_prepare, |
963d8fe5 | 3220 | .rpc_call_done = nfs4_locku_done, |
06f814a3 | 3221 | .rpc_release = nfs4_locku_release_calldata, |
963d8fe5 TM |
3222 | }; |
3223 | ||
a5d16a4d TM |
3224 | static struct rpc_task *nfs4_do_unlck(struct file_lock *fl, |
3225 | struct nfs_open_context *ctx, | |
3226 | struct nfs4_lock_state *lsp, | |
3227 | struct nfs_seqid *seqid) | |
3228 | { | |
3229 | struct nfs4_unlockdata *data; | |
5138fde0 TM |
3230 | struct rpc_message msg = { |
3231 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOCKU], | |
3232 | .rpc_cred = ctx->cred, | |
3233 | }; | |
c970aa85 TM |
3234 | struct rpc_task_setup task_setup_data = { |
3235 | .rpc_client = NFS_CLIENT(lsp->ls_state->inode), | |
5138fde0 | 3236 | .rpc_message = &msg, |
c970aa85 TM |
3237 | .callback_ops = &nfs4_locku_ops, |
3238 | .flags = RPC_TASK_ASYNC, | |
3239 | }; | |
a5d16a4d | 3240 | |
137d6aca FF |
3241 | /* Ensure this is an unlock - when canceling a lock, the |
3242 | * canceled lock is passed in, and it won't be an unlock. | |
3243 | */ | |
3244 | fl->fl_type = F_UNLCK; | |
3245 | ||
a5d16a4d TM |
3246 | data = nfs4_alloc_unlockdata(fl, ctx, lsp, seqid); |
3247 | if (data == NULL) { | |
3248 | nfs_free_seqid(seqid); | |
3249 | return ERR_PTR(-ENOMEM); | |
3250 | } | |
3251 | ||
5138fde0 TM |
3252 | msg.rpc_argp = &data->arg, |
3253 | msg.rpc_resp = &data->res, | |
c970aa85 TM |
3254 | task_setup_data.callback_data = data; |
3255 | return rpc_run_task(&task_setup_data); | |
a5d16a4d TM |
3256 | } |
3257 | ||
faf5f49c TM |
3258 | static int nfs4_proc_unlck(struct nfs4_state *state, int cmd, struct file_lock *request) |
3259 | { | |
911d1aaf | 3260 | struct nfs_seqid *seqid; |
1da177e4 | 3261 | struct nfs4_lock_state *lsp; |
06f814a3 TM |
3262 | struct rpc_task *task; |
3263 | int status = 0; | |
faf5f49c | 3264 | |
8d0a8a9d | 3265 | status = nfs4_set_lock_state(state, request); |
9b073574 TM |
3266 | /* Unlock _before_ we do the RPC call */ |
3267 | request->fl_flags |= FL_EXISTS; | |
3268 | if (do_vfs_lock(request->fl_file, request) == -ENOENT) | |
3269 | goto out; | |
8d0a8a9d | 3270 | if (status != 0) |
9b073574 TM |
3271 | goto out; |
3272 | /* Is this a delegated lock? */ | |
3273 | if (test_bit(NFS_DELEGATED_STATE, &state->flags)) | |
3274 | goto out; | |
8d0a8a9d | 3275 | lsp = request->fl_u.nfs4_fl.owner; |
911d1aaf | 3276 | seqid = nfs_alloc_seqid(&lsp->ls_seqid); |
9b073574 | 3277 | status = -ENOMEM; |
911d1aaf | 3278 | if (seqid == NULL) |
9b073574 | 3279 | goto out; |
cd3758e3 | 3280 | task = nfs4_do_unlck(request, nfs_file_open_context(request->fl_file), lsp, seqid); |
a5d16a4d TM |
3281 | status = PTR_ERR(task); |
3282 | if (IS_ERR(task)) | |
9b073574 | 3283 | goto out; |
a5d16a4d | 3284 | status = nfs4_wait_for_completion_rpc_task(task); |
e6b3c4db | 3285 | rpc_put_task(task); |
9b073574 | 3286 | out: |
1da177e4 LT |
3287 | return status; |
3288 | } | |
3289 | ||
a5d16a4d TM |
3290 | struct nfs4_lockdata { |
3291 | struct nfs_lock_args arg; | |
3292 | struct nfs_lock_res res; | |
3293 | struct nfs4_lock_state *lsp; | |
3294 | struct nfs_open_context *ctx; | |
3295 | struct file_lock fl; | |
26e976a8 | 3296 | unsigned long timestamp; |
a5d16a4d TM |
3297 | int rpc_status; |
3298 | int cancelled; | |
3299 | }; | |
3300 | ||
3301 | static struct nfs4_lockdata *nfs4_alloc_lockdata(struct file_lock *fl, | |
3302 | struct nfs_open_context *ctx, struct nfs4_lock_state *lsp) | |
1da177e4 | 3303 | { |
a5d16a4d TM |
3304 | struct nfs4_lockdata *p; |
3305 | struct inode *inode = lsp->ls_state->inode; | |
1da177e4 | 3306 | struct nfs_server *server = NFS_SERVER(inode); |
a5d16a4d TM |
3307 | |
3308 | p = kzalloc(sizeof(*p), GFP_KERNEL); | |
3309 | if (p == NULL) | |
3310 | return NULL; | |
3311 | ||
3312 | p->arg.fh = NFS_FH(inode); | |
3313 | p->arg.fl = &p->fl; | |
2f74c0a0 TM |
3314 | p->arg.open_seqid = nfs_alloc_seqid(&lsp->ls_state->owner->so_seqid); |
3315 | if (p->arg.open_seqid == NULL) | |
3316 | goto out_free; | |
a5d16a4d TM |
3317 | p->arg.lock_seqid = nfs_alloc_seqid(&lsp->ls_seqid); |
3318 | if (p->arg.lock_seqid == NULL) | |
2f74c0a0 | 3319 | goto out_free_seqid; |
a5d16a4d | 3320 | p->arg.lock_stateid = &lsp->ls_stateid; |
7539bbab | 3321 | p->arg.lock_owner.clientid = server->nfs_client->cl_clientid; |
9f958ab8 | 3322 | p->arg.lock_owner.id = lsp->ls_id.id; |
a5d16a4d TM |
3323 | p->lsp = lsp; |
3324 | atomic_inc(&lsp->ls_count); | |
3325 | p->ctx = get_nfs_open_context(ctx); | |
3326 | memcpy(&p->fl, fl, sizeof(p->fl)); | |
3327 | return p; | |
2f74c0a0 TM |
3328 | out_free_seqid: |
3329 | nfs_free_seqid(p->arg.open_seqid); | |
a5d16a4d TM |
3330 | out_free: |
3331 | kfree(p); | |
3332 | return NULL; | |
3333 | } | |
3334 | ||
3335 | static void nfs4_lock_prepare(struct rpc_task *task, void *calldata) | |
3336 | { | |
3337 | struct nfs4_lockdata *data = calldata; | |
3338 | struct nfs4_state *state = data->lsp->ls_state; | |
06735b34 | 3339 | |
a5d16a4d | 3340 | dprintk("%s: begin!\n", __FUNCTION__); |
2f74c0a0 TM |
3341 | if (nfs_wait_on_sequence(data->arg.lock_seqid, task) != 0) |
3342 | return; | |
a5d16a4d TM |
3343 | /* Do we need to do an open_to_lock_owner? */ |
3344 | if (!(data->arg.lock_seqid->sequence->flags & NFS_SEQID_CONFIRMED)) { | |
e6e21970 TM |
3345 | if (nfs_wait_on_sequence(data->arg.open_seqid, task) != 0) |
3346 | return; | |
a5d16a4d TM |
3347 | data->arg.open_stateid = &state->stateid; |
3348 | data->arg.new_lock_owner = 1; | |
2f74c0a0 TM |
3349 | } else |
3350 | data->arg.new_lock_owner = 0; | |
26e976a8 | 3351 | data->timestamp = jiffies; |
5138fde0 | 3352 | rpc_call_start(task); |
a5d16a4d TM |
3353 | dprintk("%s: done!, ret = %d\n", __FUNCTION__, data->rpc_status); |
3354 | } | |
3355 | ||
3356 | static void nfs4_lock_done(struct rpc_task *task, void *calldata) | |
3357 | { | |
3358 | struct nfs4_lockdata *data = calldata; | |
3359 | ||
3360 | dprintk("%s: begin!\n", __FUNCTION__); | |
3361 | ||
3362 | data->rpc_status = task->tk_status; | |
3363 | if (RPC_ASSASSINATED(task)) | |
3364 | goto out; | |
3365 | if (data->arg.new_lock_owner != 0) { | |
3366 | nfs_increment_open_seqid(data->rpc_status, data->arg.open_seqid); | |
3367 | if (data->rpc_status == 0) | |
3368 | nfs_confirm_seqid(&data->lsp->ls_seqid, 0); | |
3369 | else | |
3370 | goto out; | |
3371 | } | |
3372 | if (data->rpc_status == 0) { | |
3373 | memcpy(data->lsp->ls_stateid.data, data->res.stateid.data, | |
3374 | sizeof(data->lsp->ls_stateid.data)); | |
3375 | data->lsp->ls_flags |= NFS_LOCK_INITIALIZED; | |
88be9f99 | 3376 | renew_lease(NFS_SERVER(data->ctx->path.dentry->d_inode), data->timestamp); |
a5d16a4d TM |
3377 | } |
3378 | nfs_increment_lock_seqid(data->rpc_status, data->arg.lock_seqid); | |
3379 | out: | |
3380 | dprintk("%s: done, ret = %d!\n", __FUNCTION__, data->rpc_status); | |
3381 | } | |
3382 | ||
3383 | static void nfs4_lock_release(void *calldata) | |
3384 | { | |
3385 | struct nfs4_lockdata *data = calldata; | |
3386 | ||
3387 | dprintk("%s: begin!\n", __FUNCTION__); | |
2f74c0a0 | 3388 | nfs_free_seqid(data->arg.open_seqid); |
a5d16a4d TM |
3389 | if (data->cancelled != 0) { |
3390 | struct rpc_task *task; | |
3391 | task = nfs4_do_unlck(&data->fl, data->ctx, data->lsp, | |
3392 | data->arg.lock_seqid); | |
3393 | if (!IS_ERR(task)) | |
e6b3c4db | 3394 | rpc_put_task(task); |
a5d16a4d TM |
3395 | dprintk("%s: cancelling lock!\n", __FUNCTION__); |
3396 | } else | |
3397 | nfs_free_seqid(data->arg.lock_seqid); | |
3398 | nfs4_put_lock_state(data->lsp); | |
3399 | put_nfs_open_context(data->ctx); | |
3400 | kfree(data); | |
3401 | dprintk("%s: done!\n", __FUNCTION__); | |
3402 | } | |
3403 | ||
3404 | static const struct rpc_call_ops nfs4_lock_ops = { | |
3405 | .rpc_call_prepare = nfs4_lock_prepare, | |
3406 | .rpc_call_done = nfs4_lock_done, | |
3407 | .rpc_release = nfs4_lock_release, | |
3408 | }; | |
3409 | ||
3410 | static int _nfs4_do_setlk(struct nfs4_state *state, int cmd, struct file_lock *fl, int reclaim) | |
3411 | { | |
3412 | struct nfs4_lockdata *data; | |
3413 | struct rpc_task *task; | |
5138fde0 TM |
3414 | struct rpc_message msg = { |
3415 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOCK], | |
3416 | .rpc_cred = state->owner->so_cred, | |
3417 | }; | |
c970aa85 TM |
3418 | struct rpc_task_setup task_setup_data = { |
3419 | .rpc_client = NFS_CLIENT(state->inode), | |
5138fde0 | 3420 | .rpc_message = &msg, |
c970aa85 TM |
3421 | .callback_ops = &nfs4_lock_ops, |
3422 | .flags = RPC_TASK_ASYNC, | |
3423 | }; | |
a5d16a4d TM |
3424 | int ret; |
3425 | ||
3426 | dprintk("%s: begin!\n", __FUNCTION__); | |
cd3758e3 | 3427 | data = nfs4_alloc_lockdata(fl, nfs_file_open_context(fl->fl_file), |
a5d16a4d TM |
3428 | fl->fl_u.nfs4_fl.owner); |
3429 | if (data == NULL) | |
3430 | return -ENOMEM; | |
3431 | if (IS_SETLKW(cmd)) | |
3432 | data->arg.block = 1; | |
3433 | if (reclaim != 0) | |
3434 | data->arg.reclaim = 1; | |
5138fde0 TM |
3435 | msg.rpc_argp = &data->arg, |
3436 | msg.rpc_resp = &data->res, | |
c970aa85 TM |
3437 | task_setup_data.callback_data = data; |
3438 | task = rpc_run_task(&task_setup_data); | |
7a1218a2 | 3439 | if (IS_ERR(task)) |
a5d16a4d | 3440 | return PTR_ERR(task); |
a5d16a4d TM |
3441 | ret = nfs4_wait_for_completion_rpc_task(task); |
3442 | if (ret == 0) { | |
3443 | ret = data->rpc_status; | |
3444 | if (ret == -NFS4ERR_DENIED) | |
3445 | ret = -EAGAIN; | |
3446 | } else | |
3447 | data->cancelled = 1; | |
e6b3c4db | 3448 | rpc_put_task(task); |
a5d16a4d TM |
3449 | dprintk("%s: done, ret = %d!\n", __FUNCTION__, ret); |
3450 | return ret; | |
1da177e4 LT |
3451 | } |
3452 | ||
3453 | static int nfs4_lock_reclaim(struct nfs4_state *state, struct file_lock *request) | |
3454 | { | |
202b50dc TM |
3455 | struct nfs_server *server = NFS_SERVER(state->inode); |
3456 | struct nfs4_exception exception = { }; | |
3457 | int err; | |
3458 | ||
3459 | do { | |
42a2d13e TM |
3460 | /* Cache the lock if possible... */ |
3461 | if (test_bit(NFS_DELEGATED_STATE, &state->flags) != 0) | |
3462 | return 0; | |
202b50dc TM |
3463 | err = _nfs4_do_setlk(state, F_SETLK, request, 1); |
3464 | if (err != -NFS4ERR_DELAY) | |
3465 | break; | |
3466 | nfs4_handle_exception(server, err, &exception); | |
3467 | } while (exception.retry); | |
3468 | return err; | |
1da177e4 LT |
3469 | } |
3470 | ||
3471 | static int nfs4_lock_expired(struct nfs4_state *state, struct file_lock *request) | |
3472 | { | |
202b50dc TM |
3473 | struct nfs_server *server = NFS_SERVER(state->inode); |
3474 | struct nfs4_exception exception = { }; | |
3475 | int err; | |
3476 | ||
6bfc93ef TM |
3477 | err = nfs4_set_lock_state(state, request); |
3478 | if (err != 0) | |
3479 | return err; | |
202b50dc | 3480 | do { |
42a2d13e TM |
3481 | if (test_bit(NFS_DELEGATED_STATE, &state->flags) != 0) |
3482 | return 0; | |
202b50dc TM |
3483 | err = _nfs4_do_setlk(state, F_SETLK, request, 0); |
3484 | if (err != -NFS4ERR_DELAY) | |
3485 | break; | |
3486 | nfs4_handle_exception(server, err, &exception); | |
3487 | } while (exception.retry); | |
3488 | return err; | |
1da177e4 LT |
3489 | } |
3490 | ||
3491 | static int _nfs4_proc_setlk(struct nfs4_state *state, int cmd, struct file_lock *request) | |
3492 | { | |
adfa6f98 | 3493 | struct nfs_client *clp = state->owner->so_client; |
01c3b861 | 3494 | unsigned char fl_flags = request->fl_flags; |
1da177e4 LT |
3495 | int status; |
3496 | ||
6bfc93ef | 3497 | /* Is this a delegated open? */ |
6bfc93ef TM |
3498 | status = nfs4_set_lock_state(state, request); |
3499 | if (status != 0) | |
3500 | goto out; | |
01c3b861 TM |
3501 | request->fl_flags |= FL_ACCESS; |
3502 | status = do_vfs_lock(request->fl_file, request); | |
3503 | if (status < 0) | |
3504 | goto out; | |
3505 | down_read(&clp->cl_sem); | |
3506 | if (test_bit(NFS_DELEGATED_STATE, &state->flags)) { | |
3507 | struct nfs_inode *nfsi = NFS_I(state->inode); | |
3508 | /* Yes: cache locks! */ | |
3509 | down_read(&nfsi->rwsem); | |
3510 | /* ...but avoid races with delegation recall... */ | |
3511 | if (test_bit(NFS_DELEGATED_STATE, &state->flags)) { | |
3512 | request->fl_flags = fl_flags & ~FL_SLEEP; | |
3513 | status = do_vfs_lock(request->fl_file, request); | |
3514 | up_read(&nfsi->rwsem); | |
3515 | goto out_unlock; | |
3516 | } | |
3517 | up_read(&nfsi->rwsem); | |
3518 | } | |
6bfc93ef TM |
3519 | status = _nfs4_do_setlk(state, cmd, request, 0); |
3520 | if (status != 0) | |
01c3b861 | 3521 | goto out_unlock; |
6bfc93ef | 3522 | /* Note: we always want to sleep here! */ |
01c3b861 | 3523 | request->fl_flags = fl_flags | FL_SLEEP; |
6bfc93ef TM |
3524 | if (do_vfs_lock(request->fl_file, request) < 0) |
3525 | printk(KERN_WARNING "%s: VFS is out of sync with lock manager!\n", __FUNCTION__); | |
01c3b861 | 3526 | out_unlock: |
1da177e4 | 3527 | up_read(&clp->cl_sem); |
01c3b861 TM |
3528 | out: |
3529 | request->fl_flags = fl_flags; | |
1da177e4 LT |
3530 | return status; |
3531 | } | |
3532 | ||
3533 | static int nfs4_proc_setlk(struct nfs4_state *state, int cmd, struct file_lock *request) | |
3534 | { | |
3535 | struct nfs4_exception exception = { }; | |
3536 | int err; | |
3537 | ||
3538 | do { | |
3539 | err = nfs4_handle_exception(NFS_SERVER(state->inode), | |
3540 | _nfs4_proc_setlk(state, cmd, request), | |
3541 | &exception); | |
3542 | } while (exception.retry); | |
3543 | return err; | |
3544 | } | |
3545 | ||
3546 | static int | |
3547 | nfs4_proc_lock(struct file *filp, int cmd, struct file_lock *request) | |
3548 | { | |
3549 | struct nfs_open_context *ctx; | |
3550 | struct nfs4_state *state; | |
3551 | unsigned long timeout = NFS4_LOCK_MINTIMEOUT; | |
3552 | int status; | |
3553 | ||
3554 | /* verify open state */ | |
cd3758e3 | 3555 | ctx = nfs_file_open_context(filp); |
1da177e4 LT |
3556 | state = ctx->state; |
3557 | ||
3558 | if (request->fl_start < 0 || request->fl_end < 0) | |
3559 | return -EINVAL; | |
3560 | ||
3561 | if (IS_GETLK(cmd)) | |
3562 | return nfs4_proc_getlk(state, F_GETLK, request); | |
3563 | ||
3564 | if (!(IS_SETLK(cmd) || IS_SETLKW(cmd))) | |
3565 | return -EINVAL; | |
3566 | ||
3567 | if (request->fl_type == F_UNLCK) | |
3568 | return nfs4_proc_unlck(state, cmd, request); | |
3569 | ||
3570 | do { | |
3571 | status = nfs4_proc_setlk(state, cmd, request); | |
3572 | if ((status != -EAGAIN) || IS_SETLK(cmd)) | |
3573 | break; | |
3574 | timeout = nfs4_set_lock_task_retry(timeout); | |
3575 | status = -ERESTARTSYS; | |
3576 | if (signalled()) | |
3577 | break; | |
3578 | } while(status < 0); | |
1da177e4 LT |
3579 | return status; |
3580 | } | |
3581 | ||
888e694c TM |
3582 | int nfs4_lock_delegation_recall(struct nfs4_state *state, struct file_lock *fl) |
3583 | { | |
3584 | struct nfs_server *server = NFS_SERVER(state->inode); | |
3585 | struct nfs4_exception exception = { }; | |
3586 | int err; | |
3587 | ||
3588 | err = nfs4_set_lock_state(state, fl); | |
3589 | if (err != 0) | |
3590 | goto out; | |
3591 | do { | |
3592 | err = _nfs4_do_setlk(state, F_SETLK, fl, 0); | |
3593 | if (err != -NFS4ERR_DELAY) | |
3594 | break; | |
3595 | err = nfs4_handle_exception(server, err, &exception); | |
3596 | } while (exception.retry); | |
3597 | out: | |
3598 | return err; | |
3599 | } | |
6b3b5496 | 3600 | |
aa1870af BF |
3601 | #define XATTR_NAME_NFSV4_ACL "system.nfs4_acl" |
3602 | ||
6b3b5496 BF |
3603 | int nfs4_setxattr(struct dentry *dentry, const char *key, const void *buf, |
3604 | size_t buflen, int flags) | |
3605 | { | |
4b580ee3 BF |
3606 | struct inode *inode = dentry->d_inode; |
3607 | ||
3608 | if (strcmp(key, XATTR_NAME_NFSV4_ACL) != 0) | |
3609 | return -EOPNOTSUPP; | |
3610 | ||
4b580ee3 | 3611 | return nfs4_proc_set_acl(inode, buf, buflen); |
6b3b5496 BF |
3612 | } |
3613 | ||
3614 | /* The getxattr man page suggests returning -ENODATA for unknown attributes, | |
3615 | * and that's what we'll do for e.g. user attributes that haven't been set. | |
3616 | * But we'll follow ext2/ext3's lead by returning -EOPNOTSUPP for unsupported | |
3617 | * attributes in kernel-managed attribute namespaces. */ | |
3618 | ssize_t nfs4_getxattr(struct dentry *dentry, const char *key, void *buf, | |
3619 | size_t buflen) | |
3620 | { | |
aa1870af BF |
3621 | struct inode *inode = dentry->d_inode; |
3622 | ||
3623 | if (strcmp(key, XATTR_NAME_NFSV4_ACL) != 0) | |
3624 | return -EOPNOTSUPP; | |
3625 | ||
3626 | return nfs4_proc_get_acl(inode, buf, buflen); | |
6b3b5496 BF |
3627 | } |
3628 | ||
3629 | ssize_t nfs4_listxattr(struct dentry *dentry, char *buf, size_t buflen) | |
3630 | { | |
aa1870af | 3631 | size_t len = strlen(XATTR_NAME_NFSV4_ACL) + 1; |
6b3b5496 | 3632 | |
096455a2 BF |
3633 | if (!nfs4_server_supports_acls(NFS_SERVER(dentry->d_inode))) |
3634 | return 0; | |
6b3b5496 BF |
3635 | if (buf && buflen < len) |
3636 | return -ERANGE; | |
3637 | if (buf) | |
aa1870af BF |
3638 | memcpy(buf, XATTR_NAME_NFSV4_ACL, len); |
3639 | return len; | |
6b3b5496 BF |
3640 | } |
3641 | ||
56659e99 | 3642 | int nfs4_proc_fs_locations(struct inode *dir, const struct qstr *name, |
7aaa0b3b | 3643 | struct nfs4_fs_locations *fs_locations, struct page *page) |
683b57b4 TM |
3644 | { |
3645 | struct nfs_server *server = NFS_SERVER(dir); | |
3646 | u32 bitmask[2] = { | |
361e624f MN |
3647 | [0] = FATTR4_WORD0_FSID | FATTR4_WORD0_FS_LOCATIONS, |
3648 | [1] = FATTR4_WORD1_MOUNTED_ON_FILEID, | |
683b57b4 TM |
3649 | }; |
3650 | struct nfs4_fs_locations_arg args = { | |
3651 | .dir_fh = NFS_FH(dir), | |
c228fd3a | 3652 | .name = name, |
683b57b4 TM |
3653 | .page = page, |
3654 | .bitmask = bitmask, | |
3655 | }; | |
3656 | struct rpc_message msg = { | |
3657 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_FS_LOCATIONS], | |
3658 | .rpc_argp = &args, | |
7aaa0b3b | 3659 | .rpc_resp = fs_locations, |
683b57b4 TM |
3660 | }; |
3661 | int status; | |
3662 | ||
3663 | dprintk("%s: start\n", __FUNCTION__); | |
c228fd3a | 3664 | nfs_fattr_init(&fs_locations->fattr); |
683b57b4 | 3665 | fs_locations->server = server; |
830b8e33 | 3666 | fs_locations->nlocations = 0; |
683b57b4 TM |
3667 | status = rpc_call_sync(server->client, &msg, 0); |
3668 | dprintk("%s: returned status = %d\n", __FUNCTION__, status); | |
3669 | return status; | |
3670 | } | |
3671 | ||
1da177e4 LT |
3672 | struct nfs4_state_recovery_ops nfs4_reboot_recovery_ops = { |
3673 | .recover_open = nfs4_open_reclaim, | |
3674 | .recover_lock = nfs4_lock_reclaim, | |
3675 | }; | |
3676 | ||
3677 | struct nfs4_state_recovery_ops nfs4_network_partition_recovery_ops = { | |
3678 | .recover_open = nfs4_open_expired, | |
3679 | .recover_lock = nfs4_lock_expired, | |
3680 | }; | |
3681 | ||
92e1d5be | 3682 | static const struct inode_operations nfs4_file_inode_operations = { |
6b3b5496 BF |
3683 | .permission = nfs_permission, |
3684 | .getattr = nfs_getattr, | |
3685 | .setattr = nfs_setattr, | |
3686 | .getxattr = nfs4_getxattr, | |
3687 | .setxattr = nfs4_setxattr, | |
3688 | .listxattr = nfs4_listxattr, | |
3689 | }; | |
3690 | ||
509de811 | 3691 | const struct nfs_rpc_ops nfs_v4_clientops = { |
1da177e4 LT |
3692 | .version = 4, /* protocol version */ |
3693 | .dentry_ops = &nfs4_dentry_operations, | |
3694 | .dir_inode_ops = &nfs4_dir_inode_operations, | |
6b3b5496 | 3695 | .file_inode_ops = &nfs4_file_inode_operations, |
1da177e4 LT |
3696 | .getroot = nfs4_proc_get_root, |
3697 | .getattr = nfs4_proc_getattr, | |
3698 | .setattr = nfs4_proc_setattr, | |
2b3de441 | 3699 | .lookupfh = nfs4_proc_lookupfh, |
1da177e4 LT |
3700 | .lookup = nfs4_proc_lookup, |
3701 | .access = nfs4_proc_access, | |
3702 | .readlink = nfs4_proc_readlink, | |
1da177e4 LT |
3703 | .create = nfs4_proc_create, |
3704 | .remove = nfs4_proc_remove, | |
3705 | .unlink_setup = nfs4_proc_unlink_setup, | |
3706 | .unlink_done = nfs4_proc_unlink_done, | |
3707 | .rename = nfs4_proc_rename, | |
3708 | .link = nfs4_proc_link, | |
3709 | .symlink = nfs4_proc_symlink, | |
3710 | .mkdir = nfs4_proc_mkdir, | |
3711 | .rmdir = nfs4_proc_remove, | |
3712 | .readdir = nfs4_proc_readdir, | |
3713 | .mknod = nfs4_proc_mknod, | |
3714 | .statfs = nfs4_proc_statfs, | |
3715 | .fsinfo = nfs4_proc_fsinfo, | |
3716 | .pathconf = nfs4_proc_pathconf, | |
e9326dca | 3717 | .set_capabilities = nfs4_server_capabilities, |
1da177e4 LT |
3718 | .decode_dirent = nfs4_decode_dirent, |
3719 | .read_setup = nfs4_proc_read_setup, | |
ec06c096 | 3720 | .read_done = nfs4_read_done, |
1da177e4 | 3721 | .write_setup = nfs4_proc_write_setup, |
788e7a89 | 3722 | .write_done = nfs4_write_done, |
1da177e4 | 3723 | .commit_setup = nfs4_proc_commit_setup, |
788e7a89 | 3724 | .commit_done = nfs4_commit_done, |
02a913a7 TM |
3725 | .file_open = nfs_open, |
3726 | .file_release = nfs_release, | |
1da177e4 | 3727 | .lock = nfs4_proc_lock, |
e50a1c2e | 3728 | .clear_acl_cache = nfs4_zap_acl_attr, |
1da177e4 LT |
3729 | }; |
3730 | ||
3731 | /* | |
3732 | * Local variables: | |
3733 | * c-basic-offset: 8 | |
3734 | * End: | |
3735 | */ |