Commit | Line | Data |
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1da177e4 LT |
1 | /* |
2 | * fs/nfs/nfs4proc.c | |
3 | * | |
4 | * Client-side procedure declarations for NFSv4. | |
5 | * | |
6 | * Copyright (c) 2002 The Regents of the University of Michigan. | |
7 | * All rights reserved. | |
8 | * | |
9 | * Kendrick Smith <kmsmith@umich.edu> | |
10 | * Andy Adamson <andros@umich.edu> | |
11 | * | |
12 | * Redistribution and use in source and binary forms, with or without | |
13 | * modification, are permitted provided that the following conditions | |
14 | * are met: | |
15 | * | |
16 | * 1. Redistributions of source code must retain the above copyright | |
17 | * notice, this list of conditions and the following disclaimer. | |
18 | * 2. Redistributions in binary form must reproduce the above copyright | |
19 | * notice, this list of conditions and the following disclaimer in the | |
20 | * documentation and/or other materials provided with the distribution. | |
21 | * 3. Neither the name of the University nor the names of its | |
22 | * contributors may be used to endorse or promote products derived | |
23 | * from this software without specific prior written permission. | |
24 | * | |
25 | * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED | |
26 | * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF | |
27 | * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE | |
28 | * DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE | |
29 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR | |
30 | * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF | |
31 | * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR | |
32 | * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF | |
33 | * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING | |
34 | * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS | |
35 | * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |
36 | */ | |
37 | ||
38 | #include <linux/mm.h> | |
39 | #include <linux/utsname.h> | |
40 | #include <linux/delay.h> | |
41 | #include <linux/errno.h> | |
42 | #include <linux/string.h> | |
43 | #include <linux/sunrpc/clnt.h> | |
44 | #include <linux/nfs.h> | |
45 | #include <linux/nfs4.h> | |
46 | #include <linux/nfs_fs.h> | |
47 | #include <linux/nfs_page.h> | |
48 | #include <linux/smp_lock.h> | |
49 | #include <linux/namei.h> | |
02a913a7 | 50 | #include <linux/mount.h> |
1da177e4 | 51 | |
4ce79717 | 52 | #include "nfs4_fs.h" |
1da177e4 | 53 | #include "delegation.h" |
101070ca | 54 | #include "internal.h" |
006ea73e | 55 | #include "iostat.h" |
1da177e4 LT |
56 | |
57 | #define NFSDBG_FACILITY NFSDBG_PROC | |
58 | ||
2066fe89 | 59 | #define NFS4_POLL_RETRY_MIN (HZ/10) |
1da177e4 LT |
60 | #define NFS4_POLL_RETRY_MAX (15*HZ) |
61 | ||
cdd4e68b | 62 | struct nfs4_opendata; |
864472e9 | 63 | static int _nfs4_proc_open(struct nfs4_opendata *data); |
1da177e4 | 64 | static int nfs4_do_fsinfo(struct nfs_server *, struct nfs_fh *, struct nfs_fsinfo *); |
faf5f49c | 65 | static int nfs4_async_handle_error(struct rpc_task *, const struct nfs_server *); |
faf5f49c | 66 | static int nfs4_handle_exception(const struct nfs_server *server, int errorcode, struct nfs4_exception *exception); |
adfa6f98 | 67 | static int nfs4_wait_clnt_recover(struct rpc_clnt *clnt, struct nfs_client *clp); |
9936781d TM |
68 | static int _nfs4_proc_lookup(struct inode *dir, const struct qstr *name, struct nfs_fh *fhandle, struct nfs_fattr *fattr); |
69 | static int _nfs4_proc_getattr(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fattr *fattr); | |
1da177e4 | 70 | |
1da177e4 LT |
71 | /* Prevent leaks of NFSv4 errors into userland */ |
72 | int nfs4_map_errors(int err) | |
73 | { | |
74 | if (err < -1000) { | |
75 | dprintk("%s could not handle NFSv4 error %d\n", | |
3110ff80 | 76 | __func__, -err); |
1da177e4 LT |
77 | return -EIO; |
78 | } | |
79 | return err; | |
80 | } | |
81 | ||
82 | /* | |
83 | * This is our standard bitmap for GETATTR requests. | |
84 | */ | |
85 | const u32 nfs4_fattr_bitmap[2] = { | |
86 | FATTR4_WORD0_TYPE | |
87 | | FATTR4_WORD0_CHANGE | |
88 | | FATTR4_WORD0_SIZE | |
89 | | FATTR4_WORD0_FSID | |
90 | | FATTR4_WORD0_FILEID, | |
91 | FATTR4_WORD1_MODE | |
92 | | FATTR4_WORD1_NUMLINKS | |
93 | | FATTR4_WORD1_OWNER | |
94 | | FATTR4_WORD1_OWNER_GROUP | |
95 | | FATTR4_WORD1_RAWDEV | |
96 | | FATTR4_WORD1_SPACE_USED | |
97 | | FATTR4_WORD1_TIME_ACCESS | |
98 | | FATTR4_WORD1_TIME_METADATA | |
99 | | FATTR4_WORD1_TIME_MODIFY | |
100 | }; | |
101 | ||
102 | const u32 nfs4_statfs_bitmap[2] = { | |
103 | FATTR4_WORD0_FILES_AVAIL | |
104 | | FATTR4_WORD0_FILES_FREE | |
105 | | FATTR4_WORD0_FILES_TOTAL, | |
106 | FATTR4_WORD1_SPACE_AVAIL | |
107 | | FATTR4_WORD1_SPACE_FREE | |
108 | | FATTR4_WORD1_SPACE_TOTAL | |
109 | }; | |
110 | ||
4ce79717 | 111 | const u32 nfs4_pathconf_bitmap[2] = { |
1da177e4 LT |
112 | FATTR4_WORD0_MAXLINK |
113 | | FATTR4_WORD0_MAXNAME, | |
114 | 0 | |
115 | }; | |
116 | ||
117 | const u32 nfs4_fsinfo_bitmap[2] = { FATTR4_WORD0_MAXFILESIZE | |
118 | | FATTR4_WORD0_MAXREAD | |
119 | | FATTR4_WORD0_MAXWRITE | |
120 | | FATTR4_WORD0_LEASE_TIME, | |
121 | 0 | |
122 | }; | |
123 | ||
830b8e33 MN |
124 | const u32 nfs4_fs_locations_bitmap[2] = { |
125 | FATTR4_WORD0_TYPE | |
126 | | FATTR4_WORD0_CHANGE | |
127 | | FATTR4_WORD0_SIZE | |
128 | | FATTR4_WORD0_FSID | |
129 | | FATTR4_WORD0_FILEID | |
130 | | FATTR4_WORD0_FS_LOCATIONS, | |
131 | FATTR4_WORD1_MODE | |
132 | | FATTR4_WORD1_NUMLINKS | |
133 | | FATTR4_WORD1_OWNER | |
134 | | FATTR4_WORD1_OWNER_GROUP | |
135 | | FATTR4_WORD1_RAWDEV | |
136 | | FATTR4_WORD1_SPACE_USED | |
137 | | FATTR4_WORD1_TIME_ACCESS | |
138 | | FATTR4_WORD1_TIME_METADATA | |
139 | | FATTR4_WORD1_TIME_MODIFY | |
140 | | FATTR4_WORD1_MOUNTED_ON_FILEID | |
141 | }; | |
142 | ||
bc4785cd | 143 | static void nfs4_setup_readdir(u64 cookie, __be32 *verifier, struct dentry *dentry, |
1da177e4 LT |
144 | struct nfs4_readdir_arg *readdir) |
145 | { | |
0dbb4c67 | 146 | __be32 *start, *p; |
1da177e4 LT |
147 | |
148 | BUG_ON(readdir->count < 80); | |
149 | if (cookie > 2) { | |
b7ef1956 | 150 | readdir->cookie = cookie; |
1da177e4 LT |
151 | memcpy(&readdir->verifier, verifier, sizeof(readdir->verifier)); |
152 | return; | |
153 | } | |
154 | ||
155 | readdir->cookie = 0; | |
156 | memset(&readdir->verifier, 0, sizeof(readdir->verifier)); | |
157 | if (cookie == 2) | |
158 | return; | |
159 | ||
160 | /* | |
161 | * NFSv4 servers do not return entries for '.' and '..' | |
162 | * Therefore, we fake these entries here. We let '.' | |
163 | * have cookie 0 and '..' have cookie 1. Note that | |
164 | * when talking to the server, we always send cookie 0 | |
165 | * instead of 1 or 2. | |
166 | */ | |
0dbb4c67 | 167 | start = p = kmap_atomic(*readdir->pages, KM_USER0); |
1da177e4 LT |
168 | |
169 | if (cookie == 0) { | |
170 | *p++ = xdr_one; /* next */ | |
171 | *p++ = xdr_zero; /* cookie, first word */ | |
172 | *p++ = xdr_one; /* cookie, second word */ | |
173 | *p++ = xdr_one; /* entry len */ | |
174 | memcpy(p, ".\0\0\0", 4); /* entry */ | |
175 | p++; | |
176 | *p++ = xdr_one; /* bitmap length */ | |
177 | *p++ = htonl(FATTR4_WORD0_FILEID); /* bitmap */ | |
178 | *p++ = htonl(8); /* attribute buffer length */ | |
4e769b93 | 179 | p = xdr_encode_hyper(p, NFS_FILEID(dentry->d_inode)); |
1da177e4 LT |
180 | } |
181 | ||
182 | *p++ = xdr_one; /* next */ | |
183 | *p++ = xdr_zero; /* cookie, first word */ | |
184 | *p++ = xdr_two; /* cookie, second word */ | |
185 | *p++ = xdr_two; /* entry len */ | |
186 | memcpy(p, "..\0\0", 4); /* entry */ | |
187 | p++; | |
188 | *p++ = xdr_one; /* bitmap length */ | |
189 | *p++ = htonl(FATTR4_WORD0_FILEID); /* bitmap */ | |
190 | *p++ = htonl(8); /* attribute buffer length */ | |
4e769b93 | 191 | p = xdr_encode_hyper(p, NFS_FILEID(dentry->d_parent->d_inode)); |
1da177e4 LT |
192 | |
193 | readdir->pgbase = (char *)p - (char *)start; | |
194 | readdir->count -= readdir->pgbase; | |
195 | kunmap_atomic(start, KM_USER0); | |
196 | } | |
197 | ||
26e976a8 | 198 | static void renew_lease(const struct nfs_server *server, unsigned long timestamp) |
1da177e4 | 199 | { |
7539bbab | 200 | struct nfs_client *clp = server->nfs_client; |
1da177e4 LT |
201 | spin_lock(&clp->cl_lock); |
202 | if (time_before(clp->cl_last_renewal,timestamp)) | |
203 | clp->cl_last_renewal = timestamp; | |
204 | spin_unlock(&clp->cl_lock); | |
205 | } | |
206 | ||
38478b24 | 207 | static void update_changeattr(struct inode *dir, struct nfs4_change_info *cinfo) |
1da177e4 | 208 | { |
38478b24 | 209 | struct nfs_inode *nfsi = NFS_I(dir); |
1da177e4 | 210 | |
38478b24 | 211 | spin_lock(&dir->i_lock); |
40d24704 TM |
212 | nfsi->cache_validity |= NFS_INO_INVALID_ATTR|NFS_INO_REVAL_PAGECACHE|NFS_INO_INVALID_DATA; |
213 | if (!cinfo->atomic || cinfo->before != nfsi->change_attr) | |
bfc69a45 | 214 | nfs_force_lookup_revalidate(dir); |
40d24704 | 215 | nfsi->change_attr = cinfo->after; |
38478b24 | 216 | spin_unlock(&dir->i_lock); |
1da177e4 LT |
217 | } |
218 | ||
e56e0b78 | 219 | struct nfs4_opendata { |
c6d00e63 | 220 | struct kref kref; |
e56e0b78 TM |
221 | struct nfs_openargs o_arg; |
222 | struct nfs_openres o_res; | |
cdd4e68b TM |
223 | struct nfs_open_confirmargs c_arg; |
224 | struct nfs_open_confirmres c_res; | |
e56e0b78 TM |
225 | struct nfs_fattr f_attr; |
226 | struct nfs_fattr dir_attr; | |
ad389da7 | 227 | struct path path; |
e56e0b78 TM |
228 | struct dentry *dir; |
229 | struct nfs4_state_owner *owner; | |
aac00a8d | 230 | struct nfs4_state *state; |
e56e0b78 | 231 | struct iattr attrs; |
26e976a8 | 232 | unsigned long timestamp; |
3e309914 | 233 | unsigned int rpc_done : 1; |
24ac23ab TM |
234 | int rpc_status; |
235 | int cancelled; | |
e56e0b78 TM |
236 | }; |
237 | ||
2ced46c2 TM |
238 | |
239 | static void nfs4_init_opendata_res(struct nfs4_opendata *p) | |
240 | { | |
241 | p->o_res.f_attr = &p->f_attr; | |
242 | p->o_res.dir_attr = &p->dir_attr; | |
c1d51931 TM |
243 | p->o_res.seqid = p->o_arg.seqid; |
244 | p->c_res.seqid = p->c_arg.seqid; | |
2ced46c2 TM |
245 | p->o_res.server = p->o_arg.server; |
246 | nfs_fattr_init(&p->f_attr); | |
247 | nfs_fattr_init(&p->dir_attr); | |
248 | } | |
249 | ||
ad389da7 | 250 | static struct nfs4_opendata *nfs4_opendata_alloc(struct path *path, |
e56e0b78 TM |
251 | struct nfs4_state_owner *sp, int flags, |
252 | const struct iattr *attrs) | |
253 | { | |
ad389da7 | 254 | struct dentry *parent = dget_parent(path->dentry); |
e56e0b78 TM |
255 | struct inode *dir = parent->d_inode; |
256 | struct nfs_server *server = NFS_SERVER(dir); | |
257 | struct nfs4_opendata *p; | |
258 | ||
259 | p = kzalloc(sizeof(*p), GFP_KERNEL); | |
260 | if (p == NULL) | |
261 | goto err; | |
262 | p->o_arg.seqid = nfs_alloc_seqid(&sp->so_seqid); | |
263 | if (p->o_arg.seqid == NULL) | |
264 | goto err_free; | |
ad389da7 TM |
265 | p->path.mnt = mntget(path->mnt); |
266 | p->path.dentry = dget(path->dentry); | |
e56e0b78 TM |
267 | p->dir = parent; |
268 | p->owner = sp; | |
269 | atomic_inc(&sp->so_count); | |
270 | p->o_arg.fh = NFS_FH(dir); | |
271 | p->o_arg.open_flags = flags, | |
7539bbab | 272 | p->o_arg.clientid = server->nfs_client->cl_clientid; |
9f958ab8 | 273 | p->o_arg.id = sp->so_owner_id.id; |
ad389da7 | 274 | p->o_arg.name = &p->path.dentry->d_name; |
e56e0b78 TM |
275 | p->o_arg.server = server; |
276 | p->o_arg.bitmask = server->attr_bitmask; | |
277 | p->o_arg.claim = NFS4_OPEN_CLAIM_NULL; | |
e56e0b78 TM |
278 | if (flags & O_EXCL) { |
279 | u32 *s = (u32 *) p->o_arg.u.verifier.data; | |
280 | s[0] = jiffies; | |
281 | s[1] = current->pid; | |
282 | } else if (flags & O_CREAT) { | |
283 | p->o_arg.u.attrs = &p->attrs; | |
284 | memcpy(&p->attrs, attrs, sizeof(p->attrs)); | |
285 | } | |
cdd4e68b TM |
286 | p->c_arg.fh = &p->o_res.fh; |
287 | p->c_arg.stateid = &p->o_res.stateid; | |
288 | p->c_arg.seqid = p->o_arg.seqid; | |
2ced46c2 | 289 | nfs4_init_opendata_res(p); |
c6d00e63 | 290 | kref_init(&p->kref); |
e56e0b78 TM |
291 | return p; |
292 | err_free: | |
293 | kfree(p); | |
294 | err: | |
295 | dput(parent); | |
296 | return NULL; | |
297 | } | |
298 | ||
c6d00e63 | 299 | static void nfs4_opendata_free(struct kref *kref) |
e56e0b78 | 300 | { |
c6d00e63 TM |
301 | struct nfs4_opendata *p = container_of(kref, |
302 | struct nfs4_opendata, kref); | |
303 | ||
304 | nfs_free_seqid(p->o_arg.seqid); | |
aac00a8d TM |
305 | if (p->state != NULL) |
306 | nfs4_put_open_state(p->state); | |
c6d00e63 TM |
307 | nfs4_put_state_owner(p->owner); |
308 | dput(p->dir); | |
31f31db1 | 309 | path_put(&p->path); |
c6d00e63 TM |
310 | kfree(p); |
311 | } | |
312 | ||
313 | static void nfs4_opendata_put(struct nfs4_opendata *p) | |
314 | { | |
315 | if (p != NULL) | |
316 | kref_put(&p->kref, nfs4_opendata_free); | |
e56e0b78 TM |
317 | } |
318 | ||
06f814a3 TM |
319 | static int nfs4_wait_for_completion_rpc_task(struct rpc_task *task) |
320 | { | |
06f814a3 TM |
321 | int ret; |
322 | ||
06f814a3 | 323 | ret = rpc_wait_for_completion_task(task); |
06f814a3 TM |
324 | return ret; |
325 | } | |
326 | ||
6ee41268 TM |
327 | static int can_open_cached(struct nfs4_state *state, int mode) |
328 | { | |
329 | int ret = 0; | |
330 | switch (mode & (FMODE_READ|FMODE_WRITE|O_EXCL)) { | |
331 | case FMODE_READ: | |
332 | ret |= test_bit(NFS_O_RDONLY_STATE, &state->flags) != 0; | |
6ee41268 TM |
333 | break; |
334 | case FMODE_WRITE: | |
335 | ret |= test_bit(NFS_O_WRONLY_STATE, &state->flags) != 0; | |
6ee41268 TM |
336 | break; |
337 | case FMODE_READ|FMODE_WRITE: | |
338 | ret |= test_bit(NFS_O_RDWR_STATE, &state->flags) != 0; | |
339 | } | |
340 | return ret; | |
341 | } | |
342 | ||
aac00a8d TM |
343 | static int can_open_delegated(struct nfs_delegation *delegation, mode_t open_flags) |
344 | { | |
345 | if ((delegation->type & open_flags) != open_flags) | |
346 | return 0; | |
15c831bf | 347 | if (test_bit(NFS_DELEGATION_NEED_RECLAIM, &delegation->flags)) |
aac00a8d TM |
348 | return 0; |
349 | return 1; | |
350 | } | |
351 | ||
003707c7 | 352 | static void update_open_stateflags(struct nfs4_state *state, mode_t open_flags) |
e7616923 TM |
353 | { |
354 | switch (open_flags) { | |
355 | case FMODE_WRITE: | |
356 | state->n_wronly++; | |
357 | break; | |
358 | case FMODE_READ: | |
359 | state->n_rdonly++; | |
360 | break; | |
361 | case FMODE_READ|FMODE_WRITE: | |
362 | state->n_rdwr++; | |
363 | } | |
003707c7 TM |
364 | nfs4_state_set_mode_locked(state, state->state | open_flags); |
365 | } | |
366 | ||
367 | static void nfs_set_open_stateid_locked(struct nfs4_state *state, nfs4_stateid *stateid, int open_flags) | |
368 | { | |
369 | if (test_bit(NFS_DELEGATED_STATE, &state->flags) == 0) | |
370 | memcpy(state->stateid.data, stateid->data, sizeof(state->stateid.data)); | |
371 | memcpy(state->open_stateid.data, stateid->data, sizeof(state->open_stateid.data)); | |
372 | switch (open_flags) { | |
373 | case FMODE_READ: | |
374 | set_bit(NFS_O_RDONLY_STATE, &state->flags); | |
375 | break; | |
376 | case FMODE_WRITE: | |
377 | set_bit(NFS_O_WRONLY_STATE, &state->flags); | |
378 | break; | |
379 | case FMODE_READ|FMODE_WRITE: | |
380 | set_bit(NFS_O_RDWR_STATE, &state->flags); | |
381 | } | |
e7616923 TM |
382 | } |
383 | ||
003707c7 TM |
384 | static void nfs_set_open_stateid(struct nfs4_state *state, nfs4_stateid *stateid, int open_flags) |
385 | { | |
8bda4e4c | 386 | write_seqlock(&state->seqlock); |
003707c7 | 387 | nfs_set_open_stateid_locked(state, stateid, open_flags); |
8bda4e4c | 388 | write_sequnlock(&state->seqlock); |
003707c7 TM |
389 | } |
390 | ||
34310430 | 391 | static void __update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stateid, const nfs4_stateid *deleg_stateid, int open_flags) |
1da177e4 | 392 | { |
8bda4e4c TM |
393 | /* |
394 | * Protect the call to nfs4_state_set_mode_locked and | |
395 | * serialise the stateid update | |
396 | */ | |
397 | write_seqlock(&state->seqlock); | |
003707c7 TM |
398 | if (deleg_stateid != NULL) { |
399 | memcpy(state->stateid.data, deleg_stateid->data, sizeof(state->stateid.data)); | |
400 | set_bit(NFS_DELEGATED_STATE, &state->flags); | |
401 | } | |
402 | if (open_stateid != NULL) | |
403 | nfs_set_open_stateid_locked(state, open_stateid, open_flags); | |
8bda4e4c TM |
404 | write_sequnlock(&state->seqlock); |
405 | spin_lock(&state->owner->so_lock); | |
e7616923 | 406 | update_open_stateflags(state, open_flags); |
ec073428 | 407 | spin_unlock(&state->owner->so_lock); |
1da177e4 LT |
408 | } |
409 | ||
34310430 TM |
410 | static int update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stateid, nfs4_stateid *delegation, int open_flags) |
411 | { | |
412 | struct nfs_inode *nfsi = NFS_I(state->inode); | |
413 | struct nfs_delegation *deleg_cur; | |
414 | int ret = 0; | |
415 | ||
416 | open_flags &= (FMODE_READ|FMODE_WRITE); | |
417 | ||
418 | rcu_read_lock(); | |
419 | deleg_cur = rcu_dereference(nfsi->delegation); | |
420 | if (deleg_cur == NULL) | |
421 | goto no_delegation; | |
422 | ||
423 | spin_lock(&deleg_cur->lock); | |
424 | if (nfsi->delegation != deleg_cur || | |
425 | (deleg_cur->type & open_flags) != open_flags) | |
426 | goto no_delegation_unlock; | |
427 | ||
428 | if (delegation == NULL) | |
429 | delegation = &deleg_cur->stateid; | |
430 | else if (memcmp(deleg_cur->stateid.data, delegation->data, NFS4_STATEID_SIZE) != 0) | |
431 | goto no_delegation_unlock; | |
432 | ||
433 | __update_open_stateid(state, open_stateid, &deleg_cur->stateid, open_flags); | |
434 | ret = 1; | |
435 | no_delegation_unlock: | |
436 | spin_unlock(&deleg_cur->lock); | |
437 | no_delegation: | |
438 | rcu_read_unlock(); | |
439 | ||
440 | if (!ret && open_stateid != NULL) { | |
441 | __update_open_stateid(state, open_stateid, NULL, open_flags); | |
442 | ret = 1; | |
443 | } | |
444 | ||
445 | return ret; | |
446 | } | |
447 | ||
448 | ||
aac00a8d TM |
449 | static void nfs4_return_incompatible_delegation(struct inode *inode, mode_t open_flags) |
450 | { | |
451 | struct nfs_delegation *delegation; | |
452 | ||
453 | rcu_read_lock(); | |
454 | delegation = rcu_dereference(NFS_I(inode)->delegation); | |
455 | if (delegation == NULL || (delegation->type & open_flags) == open_flags) { | |
456 | rcu_read_unlock(); | |
457 | return; | |
458 | } | |
459 | rcu_read_unlock(); | |
460 | nfs_inode_return_delegation(inode); | |
461 | } | |
462 | ||
6ee41268 | 463 | static struct nfs4_state *nfs4_try_open_cached(struct nfs4_opendata *opendata) |
aac00a8d TM |
464 | { |
465 | struct nfs4_state *state = opendata->state; | |
466 | struct nfs_inode *nfsi = NFS_I(state->inode); | |
467 | struct nfs_delegation *delegation; | |
468 | int open_mode = opendata->o_arg.open_flags & (FMODE_READ|FMODE_WRITE|O_EXCL); | |
469 | nfs4_stateid stateid; | |
470 | int ret = -EAGAIN; | |
471 | ||
aac00a8d | 472 | for (;;) { |
6ee41268 TM |
473 | if (can_open_cached(state, open_mode)) { |
474 | spin_lock(&state->owner->so_lock); | |
475 | if (can_open_cached(state, open_mode)) { | |
476 | update_open_stateflags(state, open_mode); | |
477 | spin_unlock(&state->owner->so_lock); | |
6ee41268 TM |
478 | goto out_return_state; |
479 | } | |
480 | spin_unlock(&state->owner->so_lock); | |
481 | } | |
34310430 TM |
482 | rcu_read_lock(); |
483 | delegation = rcu_dereference(nfsi->delegation); | |
484 | if (delegation == NULL || | |
485 | !can_open_delegated(delegation, open_mode)) { | |
486 | rcu_read_unlock(); | |
aac00a8d | 487 | break; |
34310430 | 488 | } |
aac00a8d TM |
489 | /* Save the delegation */ |
490 | memcpy(stateid.data, delegation->stateid.data, sizeof(stateid.data)); | |
491 | rcu_read_unlock(); | |
af22f94a | 492 | ret = nfs_may_open(state->inode, state->owner->so_cred, open_mode); |
aac00a8d TM |
493 | if (ret != 0) |
494 | goto out; | |
495 | ret = -EAGAIN; | |
34310430 TM |
496 | |
497 | /* Try to update the stateid using the delegation */ | |
498 | if (update_open_stateid(state, NULL, &stateid, open_mode)) | |
499 | goto out_return_state; | |
aac00a8d | 500 | } |
aac00a8d TM |
501 | out: |
502 | return ERR_PTR(ret); | |
503 | out_return_state: | |
504 | atomic_inc(&state->count); | |
505 | return state; | |
506 | } | |
507 | ||
24ac23ab TM |
508 | static struct nfs4_state *nfs4_opendata_to_nfs4_state(struct nfs4_opendata *data) |
509 | { | |
510 | struct inode *inode; | |
511 | struct nfs4_state *state = NULL; | |
003707c7 | 512 | struct nfs_delegation *delegation; |
1b370bc2 | 513 | int ret; |
24ac23ab | 514 | |
aac00a8d | 515 | if (!data->rpc_done) { |
6ee41268 | 516 | state = nfs4_try_open_cached(data); |
aac00a8d TM |
517 | goto out; |
518 | } | |
519 | ||
1b370bc2 | 520 | ret = -EAGAIN; |
24ac23ab | 521 | if (!(data->f_attr.valid & NFS_ATTR_FATTR)) |
1b370bc2 | 522 | goto err; |
24ac23ab | 523 | inode = nfs_fhget(data->dir->d_sb, &data->o_res.fh, &data->f_attr); |
1b370bc2 | 524 | ret = PTR_ERR(inode); |
03f28e3a | 525 | if (IS_ERR(inode)) |
1b370bc2 TM |
526 | goto err; |
527 | ret = -ENOMEM; | |
24ac23ab TM |
528 | state = nfs4_get_open_state(inode, data->owner); |
529 | if (state == NULL) | |
1b370bc2 | 530 | goto err_put_inode; |
549d6ed5 | 531 | if (data->o_res.delegation_type != 0) { |
549d6ed5 TM |
532 | int delegation_flags = 0; |
533 | ||
003707c7 TM |
534 | rcu_read_lock(); |
535 | delegation = rcu_dereference(NFS_I(inode)->delegation); | |
536 | if (delegation) | |
537 | delegation_flags = delegation->flags; | |
538 | rcu_read_unlock(); | |
15c831bf | 539 | if ((delegation_flags & 1UL<<NFS_DELEGATION_NEED_RECLAIM) == 0) |
549d6ed5 TM |
540 | nfs_inode_set_delegation(state->inode, |
541 | data->owner->so_cred, | |
542 | &data->o_res); | |
543 | else | |
544 | nfs_inode_reclaim_delegation(state->inode, | |
545 | data->owner->so_cred, | |
546 | &data->o_res); | |
547 | } | |
34310430 TM |
548 | |
549 | update_open_stateid(state, &data->o_res.stateid, NULL, | |
550 | data->o_arg.open_flags); | |
24ac23ab | 551 | iput(inode); |
aac00a8d | 552 | out: |
24ac23ab | 553 | return state; |
1b370bc2 TM |
554 | err_put_inode: |
555 | iput(inode); | |
556 | err: | |
557 | return ERR_PTR(ret); | |
24ac23ab TM |
558 | } |
559 | ||
864472e9 TM |
560 | static struct nfs_open_context *nfs4_state_find_open_context(struct nfs4_state *state) |
561 | { | |
562 | struct nfs_inode *nfsi = NFS_I(state->inode); | |
563 | struct nfs_open_context *ctx; | |
564 | ||
565 | spin_lock(&state->inode->i_lock); | |
566 | list_for_each_entry(ctx, &nfsi->open_files, list) { | |
567 | if (ctx->state != state) | |
568 | continue; | |
569 | get_nfs_open_context(ctx); | |
570 | spin_unlock(&state->inode->i_lock); | |
571 | return ctx; | |
572 | } | |
573 | spin_unlock(&state->inode->i_lock); | |
574 | return ERR_PTR(-ENOENT); | |
575 | } | |
576 | ||
6f220ed5 TM |
577 | static struct nfs4_opendata *nfs4_open_recoverdata_alloc(struct nfs_open_context *ctx, struct nfs4_state *state) |
578 | { | |
579 | struct nfs4_opendata *opendata; | |
580 | ||
581 | opendata = nfs4_opendata_alloc(&ctx->path, state->owner, 0, NULL); | |
582 | if (opendata == NULL) | |
583 | return ERR_PTR(-ENOMEM); | |
584 | opendata->state = state; | |
585 | atomic_inc(&state->count); | |
586 | return opendata; | |
587 | } | |
588 | ||
2ced46c2 | 589 | static int nfs4_open_recover_helper(struct nfs4_opendata *opendata, mode_t openflags, struct nfs4_state **res) |
864472e9 | 590 | { |
2ced46c2 | 591 | struct nfs4_state *newstate; |
864472e9 TM |
592 | int ret; |
593 | ||
594 | opendata->o_arg.open_flags = openflags; | |
2ced46c2 TM |
595 | memset(&opendata->o_res, 0, sizeof(opendata->o_res)); |
596 | memset(&opendata->c_res, 0, sizeof(opendata->c_res)); | |
597 | nfs4_init_opendata_res(opendata); | |
864472e9 TM |
598 | ret = _nfs4_proc_open(opendata); |
599 | if (ret != 0) | |
600 | return ret; | |
2ced46c2 | 601 | newstate = nfs4_opendata_to_nfs4_state(opendata); |
1b370bc2 TM |
602 | if (IS_ERR(newstate)) |
603 | return PTR_ERR(newstate); | |
604 | nfs4_close_state(&opendata->path, newstate, openflags); | |
2ced46c2 | 605 | *res = newstate; |
864472e9 TM |
606 | return 0; |
607 | } | |
608 | ||
609 | static int nfs4_open_recover(struct nfs4_opendata *opendata, struct nfs4_state *state) | |
610 | { | |
864472e9 | 611 | struct nfs4_state *newstate; |
864472e9 TM |
612 | int ret; |
613 | ||
614 | /* memory barrier prior to reading state->n_* */ | |
2ced46c2 | 615 | clear_bit(NFS_DELEGATED_STATE, &state->flags); |
864472e9 TM |
616 | smp_rmb(); |
617 | if (state->n_rdwr != 0) { | |
2ced46c2 | 618 | ret = nfs4_open_recover_helper(opendata, FMODE_READ|FMODE_WRITE, &newstate); |
864472e9 TM |
619 | if (ret != 0) |
620 | return ret; | |
2ced46c2 TM |
621 | if (newstate != state) |
622 | return -ESTALE; | |
864472e9 TM |
623 | } |
624 | if (state->n_wronly != 0) { | |
2ced46c2 | 625 | ret = nfs4_open_recover_helper(opendata, FMODE_WRITE, &newstate); |
864472e9 TM |
626 | if (ret != 0) |
627 | return ret; | |
2ced46c2 TM |
628 | if (newstate != state) |
629 | return -ESTALE; | |
864472e9 TM |
630 | } |
631 | if (state->n_rdonly != 0) { | |
2ced46c2 | 632 | ret = nfs4_open_recover_helper(opendata, FMODE_READ, &newstate); |
864472e9 TM |
633 | if (ret != 0) |
634 | return ret; | |
2ced46c2 TM |
635 | if (newstate != state) |
636 | return -ESTALE; | |
864472e9 | 637 | } |
1ac7e2fd TM |
638 | /* |
639 | * We may have performed cached opens for all three recoveries. | |
640 | * Check if we need to update the current stateid. | |
641 | */ | |
642 | if (test_bit(NFS_DELEGATED_STATE, &state->flags) == 0 && | |
643 | memcmp(state->stateid.data, state->open_stateid.data, sizeof(state->stateid.data)) != 0) { | |
8bda4e4c | 644 | write_seqlock(&state->seqlock); |
1ac7e2fd TM |
645 | if (test_bit(NFS_DELEGATED_STATE, &state->flags) == 0) |
646 | memcpy(state->stateid.data, state->open_stateid.data, sizeof(state->stateid.data)); | |
8bda4e4c | 647 | write_sequnlock(&state->seqlock); |
1ac7e2fd | 648 | } |
864472e9 TM |
649 | return 0; |
650 | } | |
651 | ||
1da177e4 LT |
652 | /* |
653 | * OPEN_RECLAIM: | |
654 | * reclaim state on the server after a reboot. | |
1da177e4 | 655 | */ |
539cd03a | 656 | static int _nfs4_do_open_reclaim(struct nfs_open_context *ctx, struct nfs4_state *state) |
1da177e4 | 657 | { |
1ac7e2fd | 658 | struct nfs_delegation *delegation; |
864472e9 TM |
659 | struct nfs4_opendata *opendata; |
660 | int delegation_type = 0; | |
1da177e4 LT |
661 | int status; |
662 | ||
6f220ed5 TM |
663 | opendata = nfs4_open_recoverdata_alloc(ctx, state); |
664 | if (IS_ERR(opendata)) | |
665 | return PTR_ERR(opendata); | |
864472e9 TM |
666 | opendata->o_arg.claim = NFS4_OPEN_CLAIM_PREVIOUS; |
667 | opendata->o_arg.fh = NFS_FH(state->inode); | |
1ac7e2fd TM |
668 | rcu_read_lock(); |
669 | delegation = rcu_dereference(NFS_I(state->inode)->delegation); | |
15c831bf | 670 | if (delegation != NULL && test_bit(NFS_DELEGATION_NEED_RECLAIM, &delegation->flags) != 0) |
65bbf6bd | 671 | delegation_type = delegation->type; |
1ac7e2fd | 672 | rcu_read_unlock(); |
864472e9 TM |
673 | opendata->o_arg.u.delegation_type = delegation_type; |
674 | status = nfs4_open_recover(opendata, state); | |
c6d00e63 | 675 | nfs4_opendata_put(opendata); |
1da177e4 LT |
676 | return status; |
677 | } | |
678 | ||
539cd03a | 679 | static int nfs4_do_open_reclaim(struct nfs_open_context *ctx, struct nfs4_state *state) |
1da177e4 LT |
680 | { |
681 | struct nfs_server *server = NFS_SERVER(state->inode); | |
682 | struct nfs4_exception exception = { }; | |
683 | int err; | |
684 | do { | |
539cd03a | 685 | err = _nfs4_do_open_reclaim(ctx, state); |
202b50dc TM |
686 | if (err != -NFS4ERR_DELAY) |
687 | break; | |
688 | nfs4_handle_exception(server, err, &exception); | |
1da177e4 LT |
689 | } while (exception.retry); |
690 | return err; | |
691 | } | |
692 | ||
864472e9 TM |
693 | static int nfs4_open_reclaim(struct nfs4_state_owner *sp, struct nfs4_state *state) |
694 | { | |
695 | struct nfs_open_context *ctx; | |
696 | int ret; | |
697 | ||
698 | ctx = nfs4_state_find_open_context(state); | |
699 | if (IS_ERR(ctx)) | |
700 | return PTR_ERR(ctx); | |
539cd03a | 701 | ret = nfs4_do_open_reclaim(ctx, state); |
864472e9 TM |
702 | put_nfs_open_context(ctx); |
703 | return ret; | |
704 | } | |
705 | ||
13437e12 | 706 | static int _nfs4_open_delegation_recall(struct nfs_open_context *ctx, struct nfs4_state *state, const nfs4_stateid *stateid) |
1da177e4 | 707 | { |
e56e0b78 | 708 | struct nfs4_opendata *opendata; |
864472e9 | 709 | int ret; |
1da177e4 | 710 | |
6f220ed5 TM |
711 | opendata = nfs4_open_recoverdata_alloc(ctx, state); |
712 | if (IS_ERR(opendata)) | |
713 | return PTR_ERR(opendata); | |
e56e0b78 | 714 | opendata->o_arg.claim = NFS4_OPEN_CLAIM_DELEGATE_CUR; |
13437e12 | 715 | memcpy(opendata->o_arg.u.delegation.data, stateid->data, |
e56e0b78 | 716 | sizeof(opendata->o_arg.u.delegation.data)); |
864472e9 | 717 | ret = nfs4_open_recover(opendata, state); |
c6d00e63 | 718 | nfs4_opendata_put(opendata); |
864472e9 | 719 | return ret; |
1da177e4 LT |
720 | } |
721 | ||
13437e12 | 722 | int nfs4_open_delegation_recall(struct nfs_open_context *ctx, struct nfs4_state *state, const nfs4_stateid *stateid) |
1da177e4 LT |
723 | { |
724 | struct nfs4_exception exception = { }; | |
539cd03a | 725 | struct nfs_server *server = NFS_SERVER(state->inode); |
1da177e4 LT |
726 | int err; |
727 | do { | |
13437e12 | 728 | err = _nfs4_open_delegation_recall(ctx, state, stateid); |
1da177e4 LT |
729 | switch (err) { |
730 | case 0: | |
731 | return err; | |
732 | case -NFS4ERR_STALE_CLIENTID: | |
733 | case -NFS4ERR_STALE_STATEID: | |
734 | case -NFS4ERR_EXPIRED: | |
735 | /* Don't recall a delegation if it was lost */ | |
7539bbab | 736 | nfs4_schedule_state_recovery(server->nfs_client); |
1da177e4 LT |
737 | return err; |
738 | } | |
739 | err = nfs4_handle_exception(server, err, &exception); | |
740 | } while (exception.retry); | |
741 | return err; | |
742 | } | |
743 | ||
cdd4e68b TM |
744 | static void nfs4_open_confirm_done(struct rpc_task *task, void *calldata) |
745 | { | |
746 | struct nfs4_opendata *data = calldata; | |
747 | ||
748 | data->rpc_status = task->tk_status; | |
749 | if (RPC_ASSASSINATED(task)) | |
750 | return; | |
26e976a8 | 751 | if (data->rpc_status == 0) { |
cdd4e68b TM |
752 | memcpy(data->o_res.stateid.data, data->c_res.stateid.data, |
753 | sizeof(data->o_res.stateid.data)); | |
bb22629e | 754 | nfs_confirm_seqid(&data->owner->so_seqid, 0); |
26e976a8 | 755 | renew_lease(data->o_res.server, data->timestamp); |
3e309914 | 756 | data->rpc_done = 1; |
26e976a8 | 757 | } |
cdd4e68b TM |
758 | } |
759 | ||
760 | static void nfs4_open_confirm_release(void *calldata) | |
761 | { | |
762 | struct nfs4_opendata *data = calldata; | |
763 | struct nfs4_state *state = NULL; | |
764 | ||
765 | /* If this request hasn't been cancelled, do nothing */ | |
766 | if (data->cancelled == 0) | |
767 | goto out_free; | |
768 | /* In case of error, no cleanup! */ | |
3e309914 | 769 | if (!data->rpc_done) |
cdd4e68b | 770 | goto out_free; |
cdd4e68b | 771 | state = nfs4_opendata_to_nfs4_state(data); |
1b370bc2 | 772 | if (!IS_ERR(state)) |
4a35bd41 | 773 | nfs4_close_state(&data->path, state, data->o_arg.open_flags); |
cdd4e68b | 774 | out_free: |
c6d00e63 | 775 | nfs4_opendata_put(data); |
cdd4e68b TM |
776 | } |
777 | ||
778 | static const struct rpc_call_ops nfs4_open_confirm_ops = { | |
cdd4e68b TM |
779 | .rpc_call_done = nfs4_open_confirm_done, |
780 | .rpc_release = nfs4_open_confirm_release, | |
781 | }; | |
782 | ||
783 | /* | |
784 | * Note: On error, nfs4_proc_open_confirm will free the struct nfs4_opendata | |
785 | */ | |
786 | static int _nfs4_proc_open_confirm(struct nfs4_opendata *data) | |
787 | { | |
788 | struct nfs_server *server = NFS_SERVER(data->dir->d_inode); | |
789 | struct rpc_task *task; | |
5138fde0 TM |
790 | struct rpc_message msg = { |
791 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN_CONFIRM], | |
792 | .rpc_argp = &data->c_arg, | |
793 | .rpc_resp = &data->c_res, | |
794 | .rpc_cred = data->owner->so_cred, | |
795 | }; | |
c970aa85 TM |
796 | struct rpc_task_setup task_setup_data = { |
797 | .rpc_client = server->client, | |
5138fde0 | 798 | .rpc_message = &msg, |
c970aa85 TM |
799 | .callback_ops = &nfs4_open_confirm_ops, |
800 | .callback_data = data, | |
101070ca | 801 | .workqueue = nfsiod_workqueue, |
c970aa85 TM |
802 | .flags = RPC_TASK_ASYNC, |
803 | }; | |
1da177e4 LT |
804 | int status; |
805 | ||
c6d00e63 | 806 | kref_get(&data->kref); |
3e309914 TM |
807 | data->rpc_done = 0; |
808 | data->rpc_status = 0; | |
5138fde0 | 809 | data->timestamp = jiffies; |
c970aa85 | 810 | task = rpc_run_task(&task_setup_data); |
7a1218a2 | 811 | if (IS_ERR(task)) |
cdd4e68b | 812 | return PTR_ERR(task); |
cdd4e68b TM |
813 | status = nfs4_wait_for_completion_rpc_task(task); |
814 | if (status != 0) { | |
815 | data->cancelled = 1; | |
816 | smp_wmb(); | |
817 | } else | |
818 | status = data->rpc_status; | |
e6b3c4db | 819 | rpc_put_task(task); |
1da177e4 LT |
820 | return status; |
821 | } | |
822 | ||
24ac23ab | 823 | static void nfs4_open_prepare(struct rpc_task *task, void *calldata) |
1da177e4 | 824 | { |
24ac23ab TM |
825 | struct nfs4_opendata *data = calldata; |
826 | struct nfs4_state_owner *sp = data->owner; | |
5138fde0 | 827 | |
24ac23ab TM |
828 | if (nfs_wait_on_sequence(data->o_arg.seqid, task) != 0) |
829 | return; | |
aac00a8d TM |
830 | /* |
831 | * Check if we still need to send an OPEN call, or if we can use | |
832 | * a delegation instead. | |
833 | */ | |
834 | if (data->state != NULL) { | |
835 | struct nfs_delegation *delegation; | |
836 | ||
6ee41268 TM |
837 | if (can_open_cached(data->state, data->o_arg.open_flags & (FMODE_READ|FMODE_WRITE|O_EXCL))) |
838 | goto out_no_action; | |
aac00a8d TM |
839 | rcu_read_lock(); |
840 | delegation = rcu_dereference(NFS_I(data->state->inode)->delegation); | |
841 | if (delegation != NULL && | |
15c831bf | 842 | test_bit(NFS_DELEGATION_NEED_RECLAIM, &delegation->flags) == 0) { |
aac00a8d | 843 | rcu_read_unlock(); |
6ee41268 | 844 | goto out_no_action; |
aac00a8d TM |
845 | } |
846 | rcu_read_unlock(); | |
847 | } | |
24ac23ab | 848 | /* Update sequence id. */ |
9f958ab8 | 849 | data->o_arg.id = sp->so_owner_id.id; |
24ac23ab | 850 | data->o_arg.clientid = sp->so_client->cl_clientid; |
6f220ed5 | 851 | if (data->o_arg.claim == NFS4_OPEN_CLAIM_PREVIOUS) { |
5138fde0 | 852 | task->tk_msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN_NOATTR]; |
6f220ed5 TM |
853 | nfs_copy_fh(&data->o_res.fh, data->o_arg.fh); |
854 | } | |
26e976a8 | 855 | data->timestamp = jiffies; |
5138fde0 | 856 | rpc_call_start(task); |
6ee41268 TM |
857 | return; |
858 | out_no_action: | |
859 | task->tk_action = NULL; | |
860 | ||
24ac23ab | 861 | } |
1da177e4 | 862 | |
24ac23ab TM |
863 | static void nfs4_open_done(struct rpc_task *task, void *calldata) |
864 | { | |
865 | struct nfs4_opendata *data = calldata; | |
1da177e4 | 866 | |
24ac23ab TM |
867 | data->rpc_status = task->tk_status; |
868 | if (RPC_ASSASSINATED(task)) | |
869 | return; | |
870 | if (task->tk_status == 0) { | |
871 | switch (data->o_res.f_attr->mode & S_IFMT) { | |
6f926b5b TM |
872 | case S_IFREG: |
873 | break; | |
874 | case S_IFLNK: | |
24ac23ab | 875 | data->rpc_status = -ELOOP; |
6f926b5b TM |
876 | break; |
877 | case S_IFDIR: | |
24ac23ab | 878 | data->rpc_status = -EISDIR; |
6f926b5b TM |
879 | break; |
880 | default: | |
24ac23ab | 881 | data->rpc_status = -ENOTDIR; |
6f926b5b | 882 | } |
26e976a8 | 883 | renew_lease(data->o_res.server, data->timestamp); |
0f9f95e0 TM |
884 | if (!(data->o_res.rflags & NFS4_OPEN_RESULT_CONFIRM)) |
885 | nfs_confirm_seqid(&data->owner->so_seqid, 0); | |
6f926b5b | 886 | } |
3e309914 | 887 | data->rpc_done = 1; |
24ac23ab | 888 | } |
6f926b5b | 889 | |
24ac23ab TM |
890 | static void nfs4_open_release(void *calldata) |
891 | { | |
892 | struct nfs4_opendata *data = calldata; | |
893 | struct nfs4_state *state = NULL; | |
894 | ||
895 | /* If this request hasn't been cancelled, do nothing */ | |
896 | if (data->cancelled == 0) | |
897 | goto out_free; | |
898 | /* In case of error, no cleanup! */ | |
3e309914 | 899 | if (data->rpc_status != 0 || !data->rpc_done) |
24ac23ab TM |
900 | goto out_free; |
901 | /* In case we need an open_confirm, no cleanup! */ | |
902 | if (data->o_res.rflags & NFS4_OPEN_RESULT_CONFIRM) | |
903 | goto out_free; | |
24ac23ab | 904 | state = nfs4_opendata_to_nfs4_state(data); |
1b370bc2 | 905 | if (!IS_ERR(state)) |
4a35bd41 | 906 | nfs4_close_state(&data->path, state, data->o_arg.open_flags); |
24ac23ab | 907 | out_free: |
c6d00e63 | 908 | nfs4_opendata_put(data); |
24ac23ab TM |
909 | } |
910 | ||
911 | static const struct rpc_call_ops nfs4_open_ops = { | |
912 | .rpc_call_prepare = nfs4_open_prepare, | |
913 | .rpc_call_done = nfs4_open_done, | |
914 | .rpc_release = nfs4_open_release, | |
915 | }; | |
916 | ||
917 | /* | |
918 | * Note: On error, nfs4_proc_open will free the struct nfs4_opendata | |
919 | */ | |
920 | static int _nfs4_proc_open(struct nfs4_opendata *data) | |
921 | { | |
922 | struct inode *dir = data->dir->d_inode; | |
923 | struct nfs_server *server = NFS_SERVER(dir); | |
924 | struct nfs_openargs *o_arg = &data->o_arg; | |
925 | struct nfs_openres *o_res = &data->o_res; | |
926 | struct rpc_task *task; | |
5138fde0 TM |
927 | struct rpc_message msg = { |
928 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN], | |
929 | .rpc_argp = o_arg, | |
930 | .rpc_resp = o_res, | |
931 | .rpc_cred = data->owner->so_cred, | |
932 | }; | |
c970aa85 TM |
933 | struct rpc_task_setup task_setup_data = { |
934 | .rpc_client = server->client, | |
5138fde0 | 935 | .rpc_message = &msg, |
c970aa85 TM |
936 | .callback_ops = &nfs4_open_ops, |
937 | .callback_data = data, | |
101070ca | 938 | .workqueue = nfsiod_workqueue, |
c970aa85 TM |
939 | .flags = RPC_TASK_ASYNC, |
940 | }; | |
24ac23ab TM |
941 | int status; |
942 | ||
c6d00e63 | 943 | kref_get(&data->kref); |
3e309914 TM |
944 | data->rpc_done = 0; |
945 | data->rpc_status = 0; | |
2ced46c2 | 946 | data->cancelled = 0; |
c970aa85 | 947 | task = rpc_run_task(&task_setup_data); |
7a1218a2 | 948 | if (IS_ERR(task)) |
24ac23ab | 949 | return PTR_ERR(task); |
24ac23ab TM |
950 | status = nfs4_wait_for_completion_rpc_task(task); |
951 | if (status != 0) { | |
952 | data->cancelled = 1; | |
953 | smp_wmb(); | |
954 | } else | |
955 | status = data->rpc_status; | |
e6b3c4db | 956 | rpc_put_task(task); |
3e309914 | 957 | if (status != 0 || !data->rpc_done) |
24ac23ab TM |
958 | return status; |
959 | ||
9936781d TM |
960 | if (o_res->fh.size == 0) |
961 | _nfs4_proc_lookup(dir, o_arg->name, &o_res->fh, o_res->f_attr); | |
962 | ||
56ae19f3 TM |
963 | if (o_arg->open_flags & O_CREAT) { |
964 | update_changeattr(dir, &o_res->cinfo); | |
965 | nfs_post_op_update_inode(dir, o_res->dir_attr); | |
966 | } else | |
967 | nfs_refresh_inode(dir, o_res->dir_attr); | |
1da177e4 | 968 | if(o_res->rflags & NFS4_OPEN_RESULT_CONFIRM) { |
cdd4e68b | 969 | status = _nfs4_proc_open_confirm(data); |
1da177e4 | 970 | if (status != 0) |
24ac23ab | 971 | return status; |
1da177e4 LT |
972 | } |
973 | if (!(o_res->f_attr->valid & NFS_ATTR_FATTR)) | |
9936781d | 974 | _nfs4_proc_getattr(server, &o_res->fh, o_res->f_attr); |
24ac23ab | 975 | return 0; |
1da177e4 LT |
976 | } |
977 | ||
10afec90 | 978 | static int nfs4_recover_expired_lease(struct nfs_server *server) |
58d9714a | 979 | { |
7539bbab | 980 | struct nfs_client *clp = server->nfs_client; |
6b30954e | 981 | int ret; |
58d9714a | 982 | |
6b30954e TM |
983 | for (;;) { |
984 | ret = nfs4_wait_clnt_recover(server->client, clp); | |
985 | if (ret != 0) | |
986 | return ret; | |
987 | if (!test_and_clear_bit(NFS4CLNT_LEASE_EXPIRED, &clp->cl_state)) | |
988 | break; | |
58d9714a | 989 | nfs4_schedule_state_recovery(clp); |
6b30954e TM |
990 | } |
991 | return 0; | |
58d9714a TM |
992 | } |
993 | ||
1da177e4 LT |
994 | /* |
995 | * OPEN_EXPIRED: | |
996 | * reclaim state on the server after a network partition. | |
997 | * Assumes caller holds the appropriate lock | |
998 | */ | |
539cd03a | 999 | static int _nfs4_open_expired(struct nfs_open_context *ctx, struct nfs4_state *state) |
1da177e4 | 1000 | { |
e56e0b78 | 1001 | struct nfs4_opendata *opendata; |
864472e9 | 1002 | int ret; |
1da177e4 | 1003 | |
6f220ed5 TM |
1004 | opendata = nfs4_open_recoverdata_alloc(ctx, state); |
1005 | if (IS_ERR(opendata)) | |
1006 | return PTR_ERR(opendata); | |
864472e9 | 1007 | ret = nfs4_open_recover(opendata, state); |
35d05778 | 1008 | if (ret == -ESTALE) |
539cd03a | 1009 | d_drop(ctx->path.dentry); |
c6d00e63 | 1010 | nfs4_opendata_put(opendata); |
864472e9 | 1011 | return ret; |
1da177e4 LT |
1012 | } |
1013 | ||
539cd03a | 1014 | static inline int nfs4_do_open_expired(struct nfs_open_context *ctx, struct nfs4_state *state) |
202b50dc | 1015 | { |
539cd03a | 1016 | struct nfs_server *server = NFS_SERVER(state->inode); |
202b50dc TM |
1017 | struct nfs4_exception exception = { }; |
1018 | int err; | |
1019 | ||
1020 | do { | |
539cd03a | 1021 | err = _nfs4_open_expired(ctx, state); |
202b50dc TM |
1022 | if (err == -NFS4ERR_DELAY) |
1023 | nfs4_handle_exception(server, err, &exception); | |
1024 | } while (exception.retry); | |
1025 | return err; | |
1026 | } | |
1027 | ||
1da177e4 LT |
1028 | static int nfs4_open_expired(struct nfs4_state_owner *sp, struct nfs4_state *state) |
1029 | { | |
1da177e4 | 1030 | struct nfs_open_context *ctx; |
864472e9 | 1031 | int ret; |
1da177e4 | 1032 | |
864472e9 TM |
1033 | ctx = nfs4_state_find_open_context(state); |
1034 | if (IS_ERR(ctx)) | |
1035 | return PTR_ERR(ctx); | |
539cd03a | 1036 | ret = nfs4_do_open_expired(ctx, state); |
864472e9 TM |
1037 | put_nfs_open_context(ctx); |
1038 | return ret; | |
1da177e4 LT |
1039 | } |
1040 | ||
aa53ed54 JL |
1041 | /* |
1042 | * on an EXCLUSIVE create, the server should send back a bitmask with FATTR4-* | |
1043 | * fields corresponding to attributes that were used to store the verifier. | |
1044 | * Make sure we clobber those fields in the later setattr call | |
1045 | */ | |
1046 | static inline void nfs4_exclusive_attrset(struct nfs4_opendata *opendata, struct iattr *sattr) | |
1047 | { | |
1048 | if ((opendata->o_res.attrset[1] & FATTR4_WORD1_TIME_ACCESS) && | |
1049 | !(sattr->ia_valid & ATTR_ATIME_SET)) | |
1050 | sattr->ia_valid |= ATTR_ATIME; | |
1051 | ||
1052 | if ((opendata->o_res.attrset[1] & FATTR4_WORD1_TIME_MODIFY) && | |
1053 | !(sattr->ia_valid & ATTR_MTIME_SET)) | |
1054 | sattr->ia_valid |= ATTR_MTIME; | |
1055 | } | |
1056 | ||
1da177e4 | 1057 | /* |
24ac23ab | 1058 | * Returns a referenced nfs4_state |
1da177e4 | 1059 | */ |
ad389da7 | 1060 | 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 |
1061 | { |
1062 | struct nfs4_state_owner *sp; | |
1063 | struct nfs4_state *state = NULL; | |
1064 | struct nfs_server *server = NFS_SERVER(dir); | |
7539bbab | 1065 | struct nfs_client *clp = server->nfs_client; |
e56e0b78 | 1066 | struct nfs4_opendata *opendata; |
aac00a8d | 1067 | int status; |
1da177e4 LT |
1068 | |
1069 | /* Protect against reboot recovery conflicts */ | |
1da177e4 LT |
1070 | status = -ENOMEM; |
1071 | if (!(sp = nfs4_get_state_owner(server, cred))) { | |
1072 | dprintk("nfs4_do_open: nfs4_get_state_owner failed!\n"); | |
1073 | goto out_err; | |
1074 | } | |
58d9714a TM |
1075 | status = nfs4_recover_expired_lease(server); |
1076 | if (status != 0) | |
b4454fe1 | 1077 | goto err_put_state_owner; |
aac00a8d TM |
1078 | if (path->dentry->d_inode != NULL) |
1079 | nfs4_return_incompatible_delegation(path->dentry->d_inode, flags & (FMODE_READ|FMODE_WRITE)); | |
58d9714a TM |
1080 | down_read(&clp->cl_sem); |
1081 | status = -ENOMEM; | |
ad389da7 | 1082 | opendata = nfs4_opendata_alloc(path, sp, flags, sattr); |
e56e0b78 | 1083 | if (opendata == NULL) |
76723de0 | 1084 | goto err_release_rwsem; |
1da177e4 | 1085 | |
aac00a8d TM |
1086 | if (path->dentry->d_inode != NULL) |
1087 | opendata->state = nfs4_get_open_state(path->dentry->d_inode, sp); | |
1088 | ||
24ac23ab | 1089 | status = _nfs4_proc_open(opendata); |
1da177e4 | 1090 | if (status != 0) |
c6d00e63 | 1091 | goto err_opendata_put; |
1da177e4 | 1092 | |
aa53ed54 JL |
1093 | if (opendata->o_arg.open_flags & O_EXCL) |
1094 | nfs4_exclusive_attrset(opendata, sattr); | |
1095 | ||
24ac23ab | 1096 | state = nfs4_opendata_to_nfs4_state(opendata); |
1b370bc2 TM |
1097 | status = PTR_ERR(state); |
1098 | if (IS_ERR(state)) | |
c6d00e63 | 1099 | goto err_opendata_put; |
c6d00e63 | 1100 | nfs4_opendata_put(opendata); |
1da177e4 LT |
1101 | nfs4_put_state_owner(sp); |
1102 | up_read(&clp->cl_sem); | |
1103 | *res = state; | |
1104 | return 0; | |
c6d00e63 TM |
1105 | err_opendata_put: |
1106 | nfs4_opendata_put(opendata); | |
76723de0 TM |
1107 | err_release_rwsem: |
1108 | up_read(&clp->cl_sem); | |
e56e0b78 TM |
1109 | err_put_state_owner: |
1110 | nfs4_put_state_owner(sp); | |
1da177e4 | 1111 | out_err: |
1da177e4 LT |
1112 | *res = NULL; |
1113 | return status; | |
1114 | } | |
1115 | ||
1116 | ||
ad389da7 | 1117 | static struct nfs4_state *nfs4_do_open(struct inode *dir, struct path *path, int flags, struct iattr *sattr, struct rpc_cred *cred) |
1da177e4 LT |
1118 | { |
1119 | struct nfs4_exception exception = { }; | |
1120 | struct nfs4_state *res; | |
1121 | int status; | |
1122 | ||
1123 | do { | |
ad389da7 | 1124 | status = _nfs4_do_open(dir, path, flags, sattr, cred, &res); |
1da177e4 LT |
1125 | if (status == 0) |
1126 | break; | |
1127 | /* NOTE: BAD_SEQID means the server and client disagree about the | |
1128 | * book-keeping w.r.t. state-changing operations | |
1129 | * (OPEN/CLOSE/LOCK/LOCKU...) | |
1130 | * It is actually a sign of a bug on the client or on the server. | |
1131 | * | |
1132 | * If we receive a BAD_SEQID error in the particular case of | |
cee54fc9 | 1133 | * doing an OPEN, we assume that nfs_increment_open_seqid() will |
1da177e4 LT |
1134 | * have unhashed the old state_owner for us, and that we can |
1135 | * therefore safely retry using a new one. We should still warn | |
1136 | * the user though... | |
1137 | */ | |
1138 | if (status == -NFS4ERR_BAD_SEQID) { | |
6f43ddcc TM |
1139 | printk(KERN_WARNING "NFS: v4 server %s " |
1140 | " returned a bad sequence-id error!\n", | |
1141 | NFS_SERVER(dir)->nfs_client->cl_hostname); | |
1da177e4 LT |
1142 | exception.retry = 1; |
1143 | continue; | |
1144 | } | |
550f5747 TM |
1145 | /* |
1146 | * BAD_STATEID on OPEN means that the server cancelled our | |
1147 | * state before it received the OPEN_CONFIRM. | |
1148 | * Recover by retrying the request as per the discussion | |
1149 | * on Page 181 of RFC3530. | |
1150 | */ | |
1151 | if (status == -NFS4ERR_BAD_STATEID) { | |
1152 | exception.retry = 1; | |
1153 | continue; | |
1154 | } | |
aac00a8d TM |
1155 | if (status == -EAGAIN) { |
1156 | /* We must have found a delegation */ | |
1157 | exception.retry = 1; | |
1158 | continue; | |
1159 | } | |
1da177e4 LT |
1160 | res = ERR_PTR(nfs4_handle_exception(NFS_SERVER(dir), |
1161 | status, &exception)); | |
1162 | } while (exception.retry); | |
1163 | return res; | |
1164 | } | |
1165 | ||
659bfcd6 TM |
1166 | static int _nfs4_do_setattr(struct inode *inode, struct rpc_cred *cred, |
1167 | struct nfs_fattr *fattr, struct iattr *sattr, | |
1168 | struct nfs4_state *state) | |
1da177e4 | 1169 | { |
3e4f6290 | 1170 | struct nfs_server *server = NFS_SERVER(inode); |
1da177e4 | 1171 | struct nfs_setattrargs arg = { |
3e4f6290 | 1172 | .fh = NFS_FH(inode), |
1da177e4 LT |
1173 | .iap = sattr, |
1174 | .server = server, | |
1175 | .bitmask = server->attr_bitmask, | |
1176 | }; | |
1177 | struct nfs_setattrres res = { | |
1178 | .fattr = fattr, | |
1179 | .server = server, | |
1180 | }; | |
1181 | struct rpc_message msg = { | |
659bfcd6 TM |
1182 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SETATTR], |
1183 | .rpc_argp = &arg, | |
1184 | .rpc_resp = &res, | |
1185 | .rpc_cred = cred, | |
1da177e4 | 1186 | }; |
26e976a8 | 1187 | unsigned long timestamp = jiffies; |
65e4308d | 1188 | int status; |
1da177e4 | 1189 | |
0e574af1 | 1190 | nfs_fattr_init(fattr); |
1da177e4 | 1191 | |
3e4f6290 TM |
1192 | if (nfs4_copy_delegation_stateid(&arg.stateid, inode)) { |
1193 | /* Use that stateid */ | |
1194 | } else if (state != NULL) { | |
08e9eac4 TM |
1195 | nfs4_copy_stateid(&arg.stateid, state, current->files); |
1196 | } else | |
1da177e4 LT |
1197 | memcpy(&arg.stateid, &zero_stateid, sizeof(arg.stateid)); |
1198 | ||
65e4308d | 1199 | status = rpc_call_sync(server->client, &msg, 0); |
26e976a8 TM |
1200 | if (status == 0 && state != NULL) |
1201 | renew_lease(server, timestamp); | |
65e4308d | 1202 | return status; |
1da177e4 LT |
1203 | } |
1204 | ||
659bfcd6 TM |
1205 | static int nfs4_do_setattr(struct inode *inode, struct rpc_cred *cred, |
1206 | struct nfs_fattr *fattr, struct iattr *sattr, | |
1207 | struct nfs4_state *state) | |
1da177e4 | 1208 | { |
3e4f6290 | 1209 | struct nfs_server *server = NFS_SERVER(inode); |
1da177e4 LT |
1210 | struct nfs4_exception exception = { }; |
1211 | int err; | |
1212 | do { | |
1213 | err = nfs4_handle_exception(server, | |
659bfcd6 | 1214 | _nfs4_do_setattr(inode, cred, fattr, sattr, state), |
1da177e4 LT |
1215 | &exception); |
1216 | } while (exception.retry); | |
1217 | return err; | |
1218 | } | |
1219 | ||
1220 | struct nfs4_closedata { | |
4a35bd41 | 1221 | struct path path; |
1da177e4 LT |
1222 | struct inode *inode; |
1223 | struct nfs4_state *state; | |
1224 | struct nfs_closeargs arg; | |
1225 | struct nfs_closeres res; | |
516a6af6 | 1226 | struct nfs_fattr fattr; |
26e976a8 | 1227 | unsigned long timestamp; |
1da177e4 LT |
1228 | }; |
1229 | ||
963d8fe5 | 1230 | static void nfs4_free_closedata(void *data) |
9512135d | 1231 | { |
963d8fe5 TM |
1232 | struct nfs4_closedata *calldata = data; |
1233 | struct nfs4_state_owner *sp = calldata->state->owner; | |
9512135d TM |
1234 | |
1235 | nfs4_put_open_state(calldata->state); | |
1236 | nfs_free_seqid(calldata->arg.seqid); | |
9512135d | 1237 | nfs4_put_state_owner(sp); |
31f31db1 | 1238 | path_put(&calldata->path); |
9512135d TM |
1239 | kfree(calldata); |
1240 | } | |
1241 | ||
963d8fe5 | 1242 | static void nfs4_close_done(struct rpc_task *task, void *data) |
1da177e4 | 1243 | { |
963d8fe5 | 1244 | struct nfs4_closedata *calldata = data; |
1da177e4 | 1245 | struct nfs4_state *state = calldata->state; |
1da177e4 LT |
1246 | struct nfs_server *server = NFS_SERVER(calldata->inode); |
1247 | ||
4ce70ada TM |
1248 | if (RPC_ASSASSINATED(task)) |
1249 | return; | |
1da177e4 LT |
1250 | /* hmm. we are done with the inode, and in the process of freeing |
1251 | * the state_owner. we keep this around to process errors | |
1252 | */ | |
1da177e4 LT |
1253 | switch (task->tk_status) { |
1254 | case 0: | |
45328c35 | 1255 | nfs_set_open_stateid(state, &calldata->res.stateid, 0); |
26e976a8 | 1256 | renew_lease(server, calldata->timestamp); |
1da177e4 LT |
1257 | break; |
1258 | case -NFS4ERR_STALE_STATEID: | |
1259 | case -NFS4ERR_EXPIRED: | |
1da177e4 LT |
1260 | break; |
1261 | default: | |
1262 | if (nfs4_async_handle_error(task, server) == -EAGAIN) { | |
1263 | rpc_restart_call(task); | |
1264 | return; | |
1265 | } | |
1266 | } | |
516a6af6 | 1267 | nfs_refresh_inode(calldata->inode, calldata->res.fattr); |
1da177e4 LT |
1268 | } |
1269 | ||
4ce70ada | 1270 | static void nfs4_close_prepare(struct rpc_task *task, void *data) |
1da177e4 | 1271 | { |
4ce70ada | 1272 | struct nfs4_closedata *calldata = data; |
9512135d | 1273 | struct nfs4_state *state = calldata->state; |
003707c7 | 1274 | int clear_rd, clear_wr, clear_rdwr; |
9512135d | 1275 | |
963d8fe5 | 1276 | if (nfs_wait_on_sequence(calldata->arg.seqid, task) != 0) |
9512135d | 1277 | return; |
003707c7 | 1278 | |
003707c7 | 1279 | clear_rd = clear_wr = clear_rdwr = 0; |
4cecb76f | 1280 | spin_lock(&state->owner->so_lock); |
003707c7 | 1281 | /* Calculate the change in open mode */ |
e7616923 | 1282 | if (state->n_rdwr == 0) { |
003707c7 | 1283 | if (state->n_rdonly == 0) { |
003707c7 TM |
1284 | clear_rd |= test_and_clear_bit(NFS_O_RDONLY_STATE, &state->flags); |
1285 | clear_rdwr |= test_and_clear_bit(NFS_O_RDWR_STATE, &state->flags); | |
1286 | } | |
1287 | if (state->n_wronly == 0) { | |
003707c7 TM |
1288 | clear_wr |= test_and_clear_bit(NFS_O_WRONLY_STATE, &state->flags); |
1289 | clear_rdwr |= test_and_clear_bit(NFS_O_RDWR_STATE, &state->flags); | |
1290 | } | |
e7616923 | 1291 | } |
4cecb76f | 1292 | spin_unlock(&state->owner->so_lock); |
003707c7 | 1293 | if (!clear_rd && !clear_wr && !clear_rdwr) { |
963d8fe5 TM |
1294 | /* Note: exit _without_ calling nfs4_close_done */ |
1295 | task->tk_action = NULL; | |
9512135d TM |
1296 | return; |
1297 | } | |
516a6af6 | 1298 | nfs_fattr_init(calldata->res.fattr); |
45328c35 | 1299 | if (test_bit(NFS_O_RDONLY_STATE, &state->flags) != 0) { |
5138fde0 | 1300 | task->tk_msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN_DOWNGRADE]; |
45328c35 TM |
1301 | calldata->arg.open_flags = FMODE_READ; |
1302 | } else if (test_bit(NFS_O_WRONLY_STATE, &state->flags) != 0) { | |
5138fde0 | 1303 | task->tk_msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN_DOWNGRADE]; |
45328c35 TM |
1304 | calldata->arg.open_flags = FMODE_WRITE; |
1305 | } | |
26e976a8 | 1306 | calldata->timestamp = jiffies; |
5138fde0 | 1307 | rpc_call_start(task); |
1da177e4 LT |
1308 | } |
1309 | ||
963d8fe5 | 1310 | static const struct rpc_call_ops nfs4_close_ops = { |
4ce70ada | 1311 | .rpc_call_prepare = nfs4_close_prepare, |
963d8fe5 TM |
1312 | .rpc_call_done = nfs4_close_done, |
1313 | .rpc_release = nfs4_free_closedata, | |
1314 | }; | |
1315 | ||
1da177e4 LT |
1316 | /* |
1317 | * It is possible for data to be read/written from a mem-mapped file | |
1318 | * after the sys_close call (which hits the vfs layer as a flush). | |
1319 | * This means that we can't safely call nfsv4 close on a file until | |
1320 | * the inode is cleared. This in turn means that we are not good | |
1321 | * NFSv4 citizens - we do not indicate to the server to update the file's | |
1322 | * share state even when we are done with one of the three share | |
1323 | * stateid's in the inode. | |
1324 | * | |
1325 | * NOTE: Caller must be holding the sp->so_owner semaphore! | |
1326 | */ | |
a49c3c77 | 1327 | int nfs4_do_close(struct path *path, struct nfs4_state *state, int wait) |
1da177e4 | 1328 | { |
4a35bd41 | 1329 | struct nfs_server *server = NFS_SERVER(state->inode); |
1da177e4 | 1330 | struct nfs4_closedata *calldata; |
b39e625b TM |
1331 | struct nfs4_state_owner *sp = state->owner; |
1332 | struct rpc_task *task; | |
5138fde0 TM |
1333 | struct rpc_message msg = { |
1334 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_CLOSE], | |
1335 | .rpc_cred = state->owner->so_cred, | |
1336 | }; | |
c970aa85 TM |
1337 | struct rpc_task_setup task_setup_data = { |
1338 | .rpc_client = server->client, | |
5138fde0 | 1339 | .rpc_message = &msg, |
c970aa85 | 1340 | .callback_ops = &nfs4_close_ops, |
101070ca | 1341 | .workqueue = nfsiod_workqueue, |
c970aa85 TM |
1342 | .flags = RPC_TASK_ASYNC, |
1343 | }; | |
9512135d | 1344 | int status = -ENOMEM; |
1da177e4 | 1345 | |
9512135d | 1346 | calldata = kmalloc(sizeof(*calldata), GFP_KERNEL); |
1da177e4 | 1347 | if (calldata == NULL) |
9512135d | 1348 | goto out; |
4a35bd41 | 1349 | calldata->inode = state->inode; |
1da177e4 | 1350 | calldata->state = state; |
4a35bd41 | 1351 | calldata->arg.fh = NFS_FH(state->inode); |
003707c7 | 1352 | calldata->arg.stateid = &state->open_stateid; |
1da177e4 | 1353 | /* Serialization for the sequence id */ |
cee54fc9 | 1354 | calldata->arg.seqid = nfs_alloc_seqid(&state->owner->so_seqid); |
9512135d TM |
1355 | if (calldata->arg.seqid == NULL) |
1356 | goto out_free_calldata; | |
516a6af6 TM |
1357 | calldata->arg.bitmask = server->attr_bitmask; |
1358 | calldata->res.fattr = &calldata->fattr; | |
c1d51931 | 1359 | calldata->res.seqid = calldata->arg.seqid; |
516a6af6 | 1360 | calldata->res.server = server; |
4a35bd41 TM |
1361 | calldata->path.mnt = mntget(path->mnt); |
1362 | calldata->path.dentry = dget(path->dentry); | |
9512135d | 1363 | |
5138fde0 TM |
1364 | msg.rpc_argp = &calldata->arg, |
1365 | msg.rpc_resp = &calldata->res, | |
c970aa85 TM |
1366 | task_setup_data.callback_data = calldata; |
1367 | task = rpc_run_task(&task_setup_data); | |
b39e625b TM |
1368 | if (IS_ERR(task)) |
1369 | return PTR_ERR(task); | |
a49c3c77 TM |
1370 | status = 0; |
1371 | if (wait) | |
1372 | status = rpc_wait_for_completion_task(task); | |
b39e625b | 1373 | rpc_put_task(task); |
a49c3c77 | 1374 | return status; |
9512135d TM |
1375 | out_free_calldata: |
1376 | kfree(calldata); | |
1377 | out: | |
b39e625b TM |
1378 | nfs4_put_open_state(state); |
1379 | nfs4_put_state_owner(sp); | |
9512135d | 1380 | return status; |
1da177e4 LT |
1381 | } |
1382 | ||
4a35bd41 | 1383 | static int nfs4_intent_set_file(struct nameidata *nd, struct path *path, struct nfs4_state *state) |
02a913a7 TM |
1384 | { |
1385 | struct file *filp; | |
1b45c46c | 1386 | int ret; |
02a913a7 | 1387 | |
1b45c46c TM |
1388 | /* If the open_intent is for execute, we have an extra check to make */ |
1389 | if (nd->intent.open.flags & FMODE_EXEC) { | |
af22f94a | 1390 | ret = nfs_may_open(state->inode, |
1b45c46c TM |
1391 | state->owner->so_cred, |
1392 | nd->intent.open.flags); | |
1393 | if (ret < 0) | |
1394 | goto out_close; | |
1395 | } | |
4a35bd41 | 1396 | filp = lookup_instantiate_filp(nd, path->dentry, NULL); |
02a913a7 TM |
1397 | if (!IS_ERR(filp)) { |
1398 | struct nfs_open_context *ctx; | |
cd3758e3 | 1399 | ctx = nfs_file_open_context(filp); |
02a913a7 | 1400 | ctx->state = state; |
95cf959b TM |
1401 | return 0; |
1402 | } | |
1b45c46c TM |
1403 | ret = PTR_ERR(filp); |
1404 | out_close: | |
a49c3c77 | 1405 | nfs4_close_sync(path, state, nd->intent.open.flags); |
1b45c46c | 1406 | return ret; |
02a913a7 TM |
1407 | } |
1408 | ||
1409 | struct dentry * | |
1da177e4 LT |
1410 | nfs4_atomic_open(struct inode *dir, struct dentry *dentry, struct nameidata *nd) |
1411 | { | |
ad389da7 | 1412 | struct path path = { |
4ac91378 | 1413 | .mnt = nd->path.mnt, |
ad389da7 TM |
1414 | .dentry = dentry, |
1415 | }; | |
4ac91378 | 1416 | struct dentry *parent; |
1da177e4 LT |
1417 | struct iattr attr; |
1418 | struct rpc_cred *cred; | |
1419 | struct nfs4_state *state; | |
02a913a7 | 1420 | struct dentry *res; |
1da177e4 LT |
1421 | |
1422 | if (nd->flags & LOOKUP_CREATE) { | |
1423 | attr.ia_mode = nd->intent.open.create_mode; | |
1424 | attr.ia_valid = ATTR_MODE; | |
1425 | if (!IS_POSIXACL(dir)) | |
1426 | attr.ia_mode &= ~current->fs->umask; | |
1427 | } else { | |
1428 | attr.ia_valid = 0; | |
1429 | BUG_ON(nd->intent.open.flags & O_CREAT); | |
1430 | } | |
1431 | ||
98a8e323 | 1432 | cred = rpc_lookup_cred(); |
1da177e4 | 1433 | if (IS_ERR(cred)) |
02a913a7 | 1434 | return (struct dentry *)cred; |
565277f6 TM |
1435 | parent = dentry->d_parent; |
1436 | /* Protect against concurrent sillydeletes */ | |
1437 | nfs_block_sillyrename(parent); | |
ad389da7 | 1438 | state = nfs4_do_open(dir, &path, nd->intent.open.flags, &attr, cred); |
1da177e4 | 1439 | put_rpccred(cred); |
02a913a7 | 1440 | if (IS_ERR(state)) { |
d75340cc | 1441 | if (PTR_ERR(state) == -ENOENT) { |
02a913a7 | 1442 | d_add(dentry, NULL); |
d75340cc TM |
1443 | nfs_set_verifier(dentry, nfs_save_change_attribute(dir)); |
1444 | } | |
565277f6 | 1445 | nfs_unblock_sillyrename(parent); |
02a913a7 TM |
1446 | return (struct dentry *)state; |
1447 | } | |
24ac23ab | 1448 | res = d_add_unique(dentry, igrab(state->inode)); |
02a913a7 | 1449 | if (res != NULL) |
deee9369 | 1450 | path.dentry = res; |
d75340cc | 1451 | nfs_set_verifier(path.dentry, nfs_save_change_attribute(dir)); |
565277f6 | 1452 | nfs_unblock_sillyrename(parent); |
4a35bd41 | 1453 | nfs4_intent_set_file(nd, &path, state); |
02a913a7 | 1454 | return res; |
1da177e4 LT |
1455 | } |
1456 | ||
1457 | int | |
02a913a7 | 1458 | nfs4_open_revalidate(struct inode *dir, struct dentry *dentry, int openflags, struct nameidata *nd) |
1da177e4 | 1459 | { |
ad389da7 | 1460 | struct path path = { |
4ac91378 | 1461 | .mnt = nd->path.mnt, |
ad389da7 TM |
1462 | .dentry = dentry, |
1463 | }; | |
1da177e4 LT |
1464 | struct rpc_cred *cred; |
1465 | struct nfs4_state *state; | |
1da177e4 | 1466 | |
98a8e323 | 1467 | cred = rpc_lookup_cred(); |
1da177e4 LT |
1468 | if (IS_ERR(cred)) |
1469 | return PTR_ERR(cred); | |
aac00a8d | 1470 | state = nfs4_do_open(dir, &path, openflags, NULL, cred); |
1da177e4 | 1471 | put_rpccred(cred); |
02a913a7 TM |
1472 | if (IS_ERR(state)) { |
1473 | switch (PTR_ERR(state)) { | |
1474 | case -EPERM: | |
1475 | case -EACCES: | |
1476 | case -EDQUOT: | |
1477 | case -ENOSPC: | |
1478 | case -EROFS: | |
1479 | lookup_instantiate_filp(nd, (struct dentry *)state, NULL); | |
1480 | return 1; | |
b87c0adf CL |
1481 | default: |
1482 | goto out_drop; | |
02a913a7 | 1483 | } |
02a913a7 | 1484 | } |
24ac23ab | 1485 | if (state->inode == dentry->d_inode) { |
d75340cc | 1486 | nfs_set_verifier(dentry, nfs_save_change_attribute(dir)); |
4a35bd41 | 1487 | nfs4_intent_set_file(nd, &path, state); |
1da177e4 LT |
1488 | return 1; |
1489 | } | |
a49c3c77 | 1490 | nfs4_close_sync(&path, state, openflags); |
02a913a7 TM |
1491 | out_drop: |
1492 | d_drop(dentry); | |
1da177e4 LT |
1493 | return 0; |
1494 | } | |
1495 | ||
1496 | ||
1497 | static int _nfs4_server_capabilities(struct nfs_server *server, struct nfs_fh *fhandle) | |
1498 | { | |
1499 | struct nfs4_server_caps_res res = {}; | |
1500 | struct rpc_message msg = { | |
1501 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SERVER_CAPS], | |
1502 | .rpc_argp = fhandle, | |
1503 | .rpc_resp = &res, | |
1504 | }; | |
1505 | int status; | |
1506 | ||
1507 | status = rpc_call_sync(server->client, &msg, 0); | |
1508 | if (status == 0) { | |
1509 | memcpy(server->attr_bitmask, res.attr_bitmask, sizeof(server->attr_bitmask)); | |
1510 | if (res.attr_bitmask[0] & FATTR4_WORD0_ACL) | |
1511 | server->caps |= NFS_CAP_ACLS; | |
1512 | if (res.has_links != 0) | |
1513 | server->caps |= NFS_CAP_HARDLINKS; | |
1514 | if (res.has_symlinks != 0) | |
1515 | server->caps |= NFS_CAP_SYMLINKS; | |
1516 | server->acl_bitmask = res.acl_bitmask; | |
1517 | } | |
1518 | return status; | |
1519 | } | |
1520 | ||
55a97593 | 1521 | int nfs4_server_capabilities(struct nfs_server *server, struct nfs_fh *fhandle) |
1da177e4 LT |
1522 | { |
1523 | struct nfs4_exception exception = { }; | |
1524 | int err; | |
1525 | do { | |
1526 | err = nfs4_handle_exception(server, | |
1527 | _nfs4_server_capabilities(server, fhandle), | |
1528 | &exception); | |
1529 | } while (exception.retry); | |
1530 | return err; | |
1531 | } | |
1532 | ||
1533 | static int _nfs4_lookup_root(struct nfs_server *server, struct nfs_fh *fhandle, | |
1534 | struct nfs_fsinfo *info) | |
1535 | { | |
1da177e4 LT |
1536 | struct nfs4_lookup_root_arg args = { |
1537 | .bitmask = nfs4_fattr_bitmap, | |
1538 | }; | |
1539 | struct nfs4_lookup_res res = { | |
1540 | .server = server, | |
0e574af1 | 1541 | .fattr = info->fattr, |
1da177e4 LT |
1542 | .fh = fhandle, |
1543 | }; | |
1544 | struct rpc_message msg = { | |
1545 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOOKUP_ROOT], | |
1546 | .rpc_argp = &args, | |
1547 | .rpc_resp = &res, | |
1548 | }; | |
0e574af1 | 1549 | nfs_fattr_init(info->fattr); |
1da177e4 LT |
1550 | return rpc_call_sync(server->client, &msg, 0); |
1551 | } | |
1552 | ||
1553 | static int nfs4_lookup_root(struct nfs_server *server, struct nfs_fh *fhandle, | |
1554 | struct nfs_fsinfo *info) | |
1555 | { | |
1556 | struct nfs4_exception exception = { }; | |
1557 | int err; | |
1558 | do { | |
1559 | err = nfs4_handle_exception(server, | |
1560 | _nfs4_lookup_root(server, fhandle, info), | |
1561 | &exception); | |
1562 | } while (exception.retry); | |
1563 | return err; | |
1564 | } | |
1565 | ||
54ceac45 DH |
1566 | /* |
1567 | * get the file handle for the "/" directory on the server | |
1568 | */ | |
1da177e4 | 1569 | static int nfs4_proc_get_root(struct nfs_server *server, struct nfs_fh *fhandle, |
54ceac45 | 1570 | struct nfs_fsinfo *info) |
1da177e4 | 1571 | { |
1da177e4 LT |
1572 | int status; |
1573 | ||
1da177e4 | 1574 | status = nfs4_lookup_root(server, fhandle, info); |
1da177e4 LT |
1575 | if (status == 0) |
1576 | status = nfs4_server_capabilities(server, fhandle); | |
1577 | if (status == 0) | |
1578 | status = nfs4_do_fsinfo(server, fhandle, info); | |
c12e87f4 | 1579 | return nfs4_map_errors(status); |
1da177e4 LT |
1580 | } |
1581 | ||
6b97fd3d MN |
1582 | /* |
1583 | * Get locations and (maybe) other attributes of a referral. | |
1584 | * Note that we'll actually follow the referral later when | |
1585 | * we detect fsid mismatch in inode revalidation | |
1586 | */ | |
56659e99 | 1587 | static int nfs4_get_referral(struct inode *dir, const struct qstr *name, struct nfs_fattr *fattr, struct nfs_fh *fhandle) |
6b97fd3d MN |
1588 | { |
1589 | int status = -ENOMEM; | |
1590 | struct page *page = NULL; | |
1591 | struct nfs4_fs_locations *locations = NULL; | |
6b97fd3d MN |
1592 | |
1593 | page = alloc_page(GFP_KERNEL); | |
1594 | if (page == NULL) | |
1595 | goto out; | |
1596 | locations = kmalloc(sizeof(struct nfs4_fs_locations), GFP_KERNEL); | |
1597 | if (locations == NULL) | |
1598 | goto out; | |
1599 | ||
c228fd3a | 1600 | status = nfs4_proc_fs_locations(dir, name, locations, page); |
6b97fd3d MN |
1601 | if (status != 0) |
1602 | goto out; | |
1603 | /* Make sure server returned a different fsid for the referral */ | |
1604 | if (nfs_fsid_equal(&NFS_SERVER(dir)->fsid, &locations->fattr.fsid)) { | |
3110ff80 | 1605 | dprintk("%s: server did not return a different fsid for a referral at %s\n", __func__, name->name); |
6b97fd3d MN |
1606 | status = -EIO; |
1607 | goto out; | |
1608 | } | |
1609 | ||
1610 | memcpy(fattr, &locations->fattr, sizeof(struct nfs_fattr)); | |
1611 | fattr->valid |= NFS_ATTR_FATTR_V4_REFERRAL; | |
1612 | if (!fattr->mode) | |
1613 | fattr->mode = S_IFDIR; | |
1614 | memset(fhandle, 0, sizeof(struct nfs_fh)); | |
1615 | out: | |
1616 | if (page) | |
1617 | __free_page(page); | |
1618 | if (locations) | |
1619 | kfree(locations); | |
1620 | return status; | |
1621 | } | |
1622 | ||
1da177e4 LT |
1623 | static int _nfs4_proc_getattr(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fattr *fattr) |
1624 | { | |
1625 | struct nfs4_getattr_arg args = { | |
1626 | .fh = fhandle, | |
1627 | .bitmask = server->attr_bitmask, | |
1628 | }; | |
1629 | struct nfs4_getattr_res res = { | |
1630 | .fattr = fattr, | |
1631 | .server = server, | |
1632 | }; | |
1633 | struct rpc_message msg = { | |
1634 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GETATTR], | |
1635 | .rpc_argp = &args, | |
1636 | .rpc_resp = &res, | |
1637 | }; | |
1638 | ||
0e574af1 | 1639 | nfs_fattr_init(fattr); |
1da177e4 LT |
1640 | return rpc_call_sync(server->client, &msg, 0); |
1641 | } | |
1642 | ||
1643 | static int nfs4_proc_getattr(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fattr *fattr) | |
1644 | { | |
1645 | struct nfs4_exception exception = { }; | |
1646 | int err; | |
1647 | do { | |
1648 | err = nfs4_handle_exception(server, | |
1649 | _nfs4_proc_getattr(server, fhandle, fattr), | |
1650 | &exception); | |
1651 | } while (exception.retry); | |
1652 | return err; | |
1653 | } | |
1654 | ||
1655 | /* | |
1656 | * The file is not closed if it is opened due to the a request to change | |
1657 | * the size of the file. The open call will not be needed once the | |
1658 | * VFS layer lookup-intents are implemented. | |
1659 | * | |
1660 | * Close is called when the inode is destroyed. | |
1661 | * If we haven't opened the file for O_WRONLY, we | |
1662 | * need to in the size_change case to obtain a stateid. | |
1663 | * | |
1664 | * Got race? | |
1665 | * Because OPEN is always done by name in nfsv4, it is | |
1666 | * possible that we opened a different file by the same | |
1667 | * name. We can recognize this race condition, but we | |
1668 | * can't do anything about it besides returning an error. | |
1669 | * | |
1670 | * This will be fixed with VFS changes (lookup-intent). | |
1671 | */ | |
1672 | static int | |
1673 | nfs4_proc_setattr(struct dentry *dentry, struct nfs_fattr *fattr, | |
1674 | struct iattr *sattr) | |
1675 | { | |
08e9eac4 | 1676 | struct inode *inode = dentry->d_inode; |
659bfcd6 | 1677 | struct rpc_cred *cred = NULL; |
d530838b | 1678 | struct nfs4_state *state = NULL; |
1da177e4 LT |
1679 | int status; |
1680 | ||
0e574af1 | 1681 | nfs_fattr_init(fattr); |
1da177e4 | 1682 | |
d530838b | 1683 | /* Search for an existing open(O_WRITE) file */ |
659bfcd6 TM |
1684 | if (sattr->ia_valid & ATTR_FILE) { |
1685 | struct nfs_open_context *ctx; | |
1686 | ||
1687 | ctx = nfs_file_open_context(sattr->ia_file); | |
504e5189 NB |
1688 | if (ctx) { |
1689 | cred = ctx->cred; | |
1690 | state = ctx->state; | |
1691 | } | |
659bfcd6 | 1692 | } |
08e9eac4 | 1693 | |
659bfcd6 | 1694 | status = nfs4_do_setattr(inode, cred, fattr, sattr, state); |
65e4308d TM |
1695 | if (status == 0) |
1696 | nfs_setattr_update_inode(inode, sattr); | |
1da177e4 LT |
1697 | return status; |
1698 | } | |
1699 | ||
56659e99 TM |
1700 | static int _nfs4_proc_lookupfh(struct nfs_server *server, const struct nfs_fh *dirfh, |
1701 | const struct qstr *name, struct nfs_fh *fhandle, | |
2b3de441 DH |
1702 | struct nfs_fattr *fattr) |
1703 | { | |
1704 | int status; | |
1705 | struct nfs4_lookup_arg args = { | |
1706 | .bitmask = server->attr_bitmask, | |
1707 | .dir_fh = dirfh, | |
1708 | .name = name, | |
1709 | }; | |
1710 | struct nfs4_lookup_res res = { | |
1711 | .server = server, | |
1712 | .fattr = fattr, | |
1713 | .fh = fhandle, | |
1714 | }; | |
1715 | struct rpc_message msg = { | |
1716 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOOKUP], | |
1717 | .rpc_argp = &args, | |
1718 | .rpc_resp = &res, | |
1719 | }; | |
1720 | ||
1721 | nfs_fattr_init(fattr); | |
1722 | ||
1723 | dprintk("NFS call lookupfh %s\n", name->name); | |
1724 | status = rpc_call_sync(server->client, &msg, 0); | |
1725 | dprintk("NFS reply lookupfh: %d\n", status); | |
2b3de441 DH |
1726 | return status; |
1727 | } | |
1728 | ||
1729 | static int nfs4_proc_lookupfh(struct nfs_server *server, struct nfs_fh *dirfh, | |
1730 | struct qstr *name, struct nfs_fh *fhandle, | |
1731 | struct nfs_fattr *fattr) | |
1732 | { | |
1733 | struct nfs4_exception exception = { }; | |
1734 | int err; | |
1735 | do { | |
4e56e082 TM |
1736 | err = _nfs4_proc_lookupfh(server, dirfh, name, fhandle, fattr); |
1737 | /* FIXME: !!!! */ | |
1738 | if (err == -NFS4ERR_MOVED) { | |
1739 | err = -EREMOTE; | |
1740 | break; | |
1741 | } | |
1742 | err = nfs4_handle_exception(server, err, &exception); | |
2b3de441 DH |
1743 | } while (exception.retry); |
1744 | return err; | |
1745 | } | |
1746 | ||
56659e99 | 1747 | static int _nfs4_proc_lookup(struct inode *dir, const struct qstr *name, |
1da177e4 LT |
1748 | struct nfs_fh *fhandle, struct nfs_fattr *fattr) |
1749 | { | |
4e56e082 | 1750 | int status; |
1da177e4 LT |
1751 | |
1752 | dprintk("NFS call lookup %s\n", name->name); | |
4e56e082 | 1753 | status = _nfs4_proc_lookupfh(NFS_SERVER(dir), NFS_FH(dir), name, fhandle, fattr); |
6b97fd3d MN |
1754 | if (status == -NFS4ERR_MOVED) |
1755 | status = nfs4_get_referral(dir, name, fattr, fhandle); | |
1da177e4 LT |
1756 | dprintk("NFS reply lookup: %d\n", status); |
1757 | return status; | |
1758 | } | |
1759 | ||
1760 | static int nfs4_proc_lookup(struct inode *dir, struct qstr *name, struct nfs_fh *fhandle, struct nfs_fattr *fattr) | |
1761 | { | |
1762 | struct nfs4_exception exception = { }; | |
1763 | int err; | |
1764 | do { | |
1765 | err = nfs4_handle_exception(NFS_SERVER(dir), | |
1766 | _nfs4_proc_lookup(dir, name, fhandle, fattr), | |
1767 | &exception); | |
1768 | } while (exception.retry); | |
1769 | return err; | |
1770 | } | |
1771 | ||
1772 | static int _nfs4_proc_access(struct inode *inode, struct nfs_access_entry *entry) | |
1773 | { | |
76b32999 TM |
1774 | struct nfs_server *server = NFS_SERVER(inode); |
1775 | struct nfs_fattr fattr; | |
1da177e4 LT |
1776 | struct nfs4_accessargs args = { |
1777 | .fh = NFS_FH(inode), | |
76b32999 TM |
1778 | .bitmask = server->attr_bitmask, |
1779 | }; | |
1780 | struct nfs4_accessres res = { | |
1781 | .server = server, | |
1782 | .fattr = &fattr, | |
1da177e4 | 1783 | }; |
1da177e4 LT |
1784 | struct rpc_message msg = { |
1785 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_ACCESS], | |
1786 | .rpc_argp = &args, | |
1787 | .rpc_resp = &res, | |
1788 | .rpc_cred = entry->cred, | |
1789 | }; | |
1790 | int mode = entry->mask; | |
1791 | int status; | |
1792 | ||
1793 | /* | |
1794 | * Determine which access bits we want to ask for... | |
1795 | */ | |
1796 | if (mode & MAY_READ) | |
1797 | args.access |= NFS4_ACCESS_READ; | |
1798 | if (S_ISDIR(inode->i_mode)) { | |
1799 | if (mode & MAY_WRITE) | |
1800 | args.access |= NFS4_ACCESS_MODIFY | NFS4_ACCESS_EXTEND | NFS4_ACCESS_DELETE; | |
1801 | if (mode & MAY_EXEC) | |
1802 | args.access |= NFS4_ACCESS_LOOKUP; | |
1803 | } else { | |
1804 | if (mode & MAY_WRITE) | |
1805 | args.access |= NFS4_ACCESS_MODIFY | NFS4_ACCESS_EXTEND; | |
1806 | if (mode & MAY_EXEC) | |
1807 | args.access |= NFS4_ACCESS_EXECUTE; | |
1808 | } | |
76b32999 | 1809 | nfs_fattr_init(&fattr); |
1da177e4 LT |
1810 | status = rpc_call_sync(NFS_CLIENT(inode), &msg, 0); |
1811 | if (!status) { | |
1812 | entry->mask = 0; | |
1813 | if (res.access & NFS4_ACCESS_READ) | |
1814 | entry->mask |= MAY_READ; | |
1815 | if (res.access & (NFS4_ACCESS_MODIFY | NFS4_ACCESS_EXTEND | NFS4_ACCESS_DELETE)) | |
1816 | entry->mask |= MAY_WRITE; | |
1817 | if (res.access & (NFS4_ACCESS_LOOKUP|NFS4_ACCESS_EXECUTE)) | |
1818 | entry->mask |= MAY_EXEC; | |
76b32999 | 1819 | nfs_refresh_inode(inode, &fattr); |
1da177e4 LT |
1820 | } |
1821 | return status; | |
1822 | } | |
1823 | ||
1824 | static int nfs4_proc_access(struct inode *inode, struct nfs_access_entry *entry) | |
1825 | { | |
1826 | struct nfs4_exception exception = { }; | |
1827 | int err; | |
1828 | do { | |
1829 | err = nfs4_handle_exception(NFS_SERVER(inode), | |
1830 | _nfs4_proc_access(inode, entry), | |
1831 | &exception); | |
1832 | } while (exception.retry); | |
1833 | return err; | |
1834 | } | |
1835 | ||
1836 | /* | |
1837 | * TODO: For the time being, we don't try to get any attributes | |
1838 | * along with any of the zero-copy operations READ, READDIR, | |
1839 | * READLINK, WRITE. | |
1840 | * | |
1841 | * In the case of the first three, we want to put the GETATTR | |
1842 | * after the read-type operation -- this is because it is hard | |
1843 | * to predict the length of a GETATTR response in v4, and thus | |
1844 | * align the READ data correctly. This means that the GETATTR | |
1845 | * may end up partially falling into the page cache, and we should | |
1846 | * shift it into the 'tail' of the xdr_buf before processing. | |
1847 | * To do this efficiently, we need to know the total length | |
1848 | * of data received, which doesn't seem to be available outside | |
1849 | * of the RPC layer. | |
1850 | * | |
1851 | * In the case of WRITE, we also want to put the GETATTR after | |
1852 | * the operation -- in this case because we want to make sure | |
1853 | * we get the post-operation mtime and size. This means that | |
1854 | * we can't use xdr_encode_pages() as written: we need a variant | |
1855 | * of it which would leave room in the 'tail' iovec. | |
1856 | * | |
1857 | * Both of these changes to the XDR layer would in fact be quite | |
1858 | * minor, but I decided to leave them for a subsequent patch. | |
1859 | */ | |
1860 | static int _nfs4_proc_readlink(struct inode *inode, struct page *page, | |
1861 | unsigned int pgbase, unsigned int pglen) | |
1862 | { | |
1863 | struct nfs4_readlink args = { | |
1864 | .fh = NFS_FH(inode), | |
1865 | .pgbase = pgbase, | |
1866 | .pglen = pglen, | |
1867 | .pages = &page, | |
1868 | }; | |
1869 | struct rpc_message msg = { | |
1870 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_READLINK], | |
1871 | .rpc_argp = &args, | |
1872 | .rpc_resp = NULL, | |
1873 | }; | |
1874 | ||
1875 | return rpc_call_sync(NFS_CLIENT(inode), &msg, 0); | |
1876 | } | |
1877 | ||
1878 | static int nfs4_proc_readlink(struct inode *inode, struct page *page, | |
1879 | unsigned int pgbase, unsigned int pglen) | |
1880 | { | |
1881 | struct nfs4_exception exception = { }; | |
1882 | int err; | |
1883 | do { | |
1884 | err = nfs4_handle_exception(NFS_SERVER(inode), | |
1885 | _nfs4_proc_readlink(inode, page, pgbase, pglen), | |
1886 | &exception); | |
1887 | } while (exception.retry); | |
1888 | return err; | |
1889 | } | |
1890 | ||
1da177e4 LT |
1891 | /* |
1892 | * Got race? | |
1893 | * We will need to arrange for the VFS layer to provide an atomic open. | |
1894 | * Until then, this create/open method is prone to inefficiency and race | |
1895 | * conditions due to the lookup, create, and open VFS calls from sys_open() | |
1896 | * placed on the wire. | |
1897 | * | |
1898 | * Given the above sorry state of affairs, I'm simply sending an OPEN. | |
1899 | * The file will be opened again in the subsequent VFS open call | |
1900 | * (nfs4_proc_file_open). | |
1901 | * | |
1902 | * The open for read will just hang around to be used by any process that | |
1903 | * opens the file O_RDONLY. This will all be resolved with the VFS changes. | |
1904 | */ | |
1905 | ||
1906 | static int | |
1907 | nfs4_proc_create(struct inode *dir, struct dentry *dentry, struct iattr *sattr, | |
02a913a7 | 1908 | int flags, struct nameidata *nd) |
1da177e4 | 1909 | { |
ad389da7 | 1910 | struct path path = { |
4ac91378 | 1911 | .mnt = nd->path.mnt, |
ad389da7 TM |
1912 | .dentry = dentry, |
1913 | }; | |
1da177e4 LT |
1914 | struct nfs4_state *state; |
1915 | struct rpc_cred *cred; | |
1916 | int status = 0; | |
1917 | ||
98a8e323 | 1918 | cred = rpc_lookup_cred(); |
1da177e4 LT |
1919 | if (IS_ERR(cred)) { |
1920 | status = PTR_ERR(cred); | |
1921 | goto out; | |
1922 | } | |
ad389da7 | 1923 | state = nfs4_do_open(dir, &path, flags, sattr, cred); |
d4d9cdcb | 1924 | d_drop(dentry); |
1da177e4 LT |
1925 | if (IS_ERR(state)) { |
1926 | status = PTR_ERR(state); | |
659bfcd6 | 1927 | goto out_putcred; |
1da177e4 | 1928 | } |
d4d9cdcb | 1929 | d_add(dentry, igrab(state->inode)); |
d75340cc | 1930 | nfs_set_verifier(dentry, nfs_save_change_attribute(dir)); |
1da177e4 LT |
1931 | if (flags & O_EXCL) { |
1932 | struct nfs_fattr fattr; | |
659bfcd6 | 1933 | status = nfs4_do_setattr(state->inode, cred, &fattr, sattr, state); |
02a913a7 | 1934 | if (status == 0) |
65e4308d | 1935 | nfs_setattr_update_inode(state->inode, sattr); |
aa53ed54 | 1936 | nfs_post_op_update_inode(state->inode, &fattr); |
02a913a7 | 1937 | } |
ad389da7 | 1938 | if (status == 0 && (nd->flags & LOOKUP_OPEN) != 0) |
4a35bd41 | 1939 | status = nfs4_intent_set_file(nd, &path, state); |
02a913a7 | 1940 | else |
a49c3c77 | 1941 | nfs4_close_sync(&path, state, flags); |
659bfcd6 TM |
1942 | out_putcred: |
1943 | put_rpccred(cred); | |
1da177e4 LT |
1944 | out: |
1945 | return status; | |
1946 | } | |
1947 | ||
1948 | static int _nfs4_proc_remove(struct inode *dir, struct qstr *name) | |
1949 | { | |
16e42959 | 1950 | struct nfs_server *server = NFS_SERVER(dir); |
4fdc17b2 | 1951 | struct nfs_removeargs args = { |
1da177e4 | 1952 | .fh = NFS_FH(dir), |
4fdc17b2 TM |
1953 | .name.len = name->len, |
1954 | .name.name = name->name, | |
16e42959 TM |
1955 | .bitmask = server->attr_bitmask, |
1956 | }; | |
4fdc17b2 | 1957 | struct nfs_removeres res = { |
16e42959 | 1958 | .server = server, |
1da177e4 | 1959 | }; |
1da177e4 | 1960 | struct rpc_message msg = { |
4fdc17b2 TM |
1961 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_REMOVE], |
1962 | .rpc_argp = &args, | |
1963 | .rpc_resp = &res, | |
1da177e4 LT |
1964 | }; |
1965 | int status; | |
1966 | ||
4fdc17b2 | 1967 | nfs_fattr_init(&res.dir_attr); |
16e42959 TM |
1968 | status = rpc_call_sync(server->client, &msg, 0); |
1969 | if (status == 0) { | |
1970 | update_changeattr(dir, &res.cinfo); | |
4fdc17b2 | 1971 | nfs_post_op_update_inode(dir, &res.dir_attr); |
16e42959 | 1972 | } |
1da177e4 LT |
1973 | return status; |
1974 | } | |
1975 | ||
1976 | static int nfs4_proc_remove(struct inode *dir, struct qstr *name) | |
1977 | { | |
1978 | struct nfs4_exception exception = { }; | |
1979 | int err; | |
1980 | do { | |
1981 | err = nfs4_handle_exception(NFS_SERVER(dir), | |
1982 | _nfs4_proc_remove(dir, name), | |
1983 | &exception); | |
1984 | } while (exception.retry); | |
1985 | return err; | |
1986 | } | |
1987 | ||
e4eff1a6 | 1988 | static void nfs4_proc_unlink_setup(struct rpc_message *msg, struct inode *dir) |
1da177e4 | 1989 | { |
e4eff1a6 TM |
1990 | struct nfs_server *server = NFS_SERVER(dir); |
1991 | struct nfs_removeargs *args = msg->rpc_argp; | |
1992 | struct nfs_removeres *res = msg->rpc_resp; | |
1da177e4 | 1993 | |
e4eff1a6 TM |
1994 | args->bitmask = server->attr_bitmask; |
1995 | res->server = server; | |
1da177e4 | 1996 | msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_REMOVE]; |
1da177e4 LT |
1997 | } |
1998 | ||
e4eff1a6 | 1999 | static int nfs4_proc_unlink_done(struct rpc_task *task, struct inode *dir) |
1da177e4 | 2000 | { |
e4eff1a6 TM |
2001 | struct nfs_removeres *res = task->tk_msg.rpc_resp; |
2002 | ||
2003 | if (nfs4_async_handle_error(task, res->server) == -EAGAIN) | |
2004 | return 0; | |
2005 | update_changeattr(dir, &res->cinfo); | |
2006 | nfs_post_op_update_inode(dir, &res->dir_attr); | |
2007 | return 1; | |
1da177e4 LT |
2008 | } |
2009 | ||
2010 | static int _nfs4_proc_rename(struct inode *old_dir, struct qstr *old_name, | |
2011 | struct inode *new_dir, struct qstr *new_name) | |
2012 | { | |
6caf2c82 | 2013 | struct nfs_server *server = NFS_SERVER(old_dir); |
1da177e4 LT |
2014 | struct nfs4_rename_arg arg = { |
2015 | .old_dir = NFS_FH(old_dir), | |
2016 | .new_dir = NFS_FH(new_dir), | |
2017 | .old_name = old_name, | |
2018 | .new_name = new_name, | |
6caf2c82 TM |
2019 | .bitmask = server->attr_bitmask, |
2020 | }; | |
2021 | struct nfs_fattr old_fattr, new_fattr; | |
2022 | struct nfs4_rename_res res = { | |
2023 | .server = server, | |
2024 | .old_fattr = &old_fattr, | |
2025 | .new_fattr = &new_fattr, | |
1da177e4 | 2026 | }; |
1da177e4 LT |
2027 | struct rpc_message msg = { |
2028 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RENAME], | |
2029 | .rpc_argp = &arg, | |
2030 | .rpc_resp = &res, | |
2031 | }; | |
2032 | int status; | |
2033 | ||
6caf2c82 TM |
2034 | nfs_fattr_init(res.old_fattr); |
2035 | nfs_fattr_init(res.new_fattr); | |
2036 | status = rpc_call_sync(server->client, &msg, 0); | |
1da177e4 LT |
2037 | |
2038 | if (!status) { | |
2039 | update_changeattr(old_dir, &res.old_cinfo); | |
6caf2c82 | 2040 | nfs_post_op_update_inode(old_dir, res.old_fattr); |
1da177e4 | 2041 | update_changeattr(new_dir, &res.new_cinfo); |
6caf2c82 | 2042 | nfs_post_op_update_inode(new_dir, res.new_fattr); |
1da177e4 LT |
2043 | } |
2044 | return status; | |
2045 | } | |
2046 | ||
2047 | static int nfs4_proc_rename(struct inode *old_dir, struct qstr *old_name, | |
2048 | struct inode *new_dir, struct qstr *new_name) | |
2049 | { | |
2050 | struct nfs4_exception exception = { }; | |
2051 | int err; | |
2052 | do { | |
2053 | err = nfs4_handle_exception(NFS_SERVER(old_dir), | |
2054 | _nfs4_proc_rename(old_dir, old_name, | |
2055 | new_dir, new_name), | |
2056 | &exception); | |
2057 | } while (exception.retry); | |
2058 | return err; | |
2059 | } | |
2060 | ||
2061 | static int _nfs4_proc_link(struct inode *inode, struct inode *dir, struct qstr *name) | |
2062 | { | |
91ba2eee | 2063 | struct nfs_server *server = NFS_SERVER(inode); |
1da177e4 LT |
2064 | struct nfs4_link_arg arg = { |
2065 | .fh = NFS_FH(inode), | |
2066 | .dir_fh = NFS_FH(dir), | |
2067 | .name = name, | |
91ba2eee TM |
2068 | .bitmask = server->attr_bitmask, |
2069 | }; | |
2070 | struct nfs_fattr fattr, dir_attr; | |
2071 | struct nfs4_link_res res = { | |
2072 | .server = server, | |
2073 | .fattr = &fattr, | |
2074 | .dir_attr = &dir_attr, | |
1da177e4 | 2075 | }; |
1da177e4 LT |
2076 | struct rpc_message msg = { |
2077 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LINK], | |
2078 | .rpc_argp = &arg, | |
91ba2eee | 2079 | .rpc_resp = &res, |
1da177e4 LT |
2080 | }; |
2081 | int status; | |
2082 | ||
91ba2eee TM |
2083 | nfs_fattr_init(res.fattr); |
2084 | nfs_fattr_init(res.dir_attr); | |
2085 | status = rpc_call_sync(server->client, &msg, 0); | |
2086 | if (!status) { | |
2087 | update_changeattr(dir, &res.cinfo); | |
2088 | nfs_post_op_update_inode(dir, res.dir_attr); | |
73a3d07c | 2089 | nfs_post_op_update_inode(inode, res.fattr); |
91ba2eee | 2090 | } |
1da177e4 LT |
2091 | |
2092 | return status; | |
2093 | } | |
2094 | ||
2095 | static int nfs4_proc_link(struct inode *inode, struct inode *dir, struct qstr *name) | |
2096 | { | |
2097 | struct nfs4_exception exception = { }; | |
2098 | int err; | |
2099 | do { | |
2100 | err = nfs4_handle_exception(NFS_SERVER(inode), | |
2101 | _nfs4_proc_link(inode, dir, name), | |
2102 | &exception); | |
2103 | } while (exception.retry); | |
2104 | return err; | |
2105 | } | |
2106 | ||
57dc9a57 TM |
2107 | struct nfs4_createdata { |
2108 | struct rpc_message msg; | |
2109 | struct nfs4_create_arg arg; | |
2110 | struct nfs4_create_res res; | |
2111 | struct nfs_fh fh; | |
2112 | struct nfs_fattr fattr; | |
2113 | struct nfs_fattr dir_fattr; | |
2114 | }; | |
2115 | ||
2116 | static struct nfs4_createdata *nfs4_alloc_createdata(struct inode *dir, | |
2117 | struct qstr *name, struct iattr *sattr, u32 ftype) | |
2118 | { | |
2119 | struct nfs4_createdata *data; | |
2120 | ||
2121 | data = kzalloc(sizeof(*data), GFP_KERNEL); | |
2122 | if (data != NULL) { | |
2123 | struct nfs_server *server = NFS_SERVER(dir); | |
2124 | ||
2125 | data->msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_CREATE]; | |
2126 | data->msg.rpc_argp = &data->arg; | |
2127 | data->msg.rpc_resp = &data->res; | |
2128 | data->arg.dir_fh = NFS_FH(dir); | |
2129 | data->arg.server = server; | |
2130 | data->arg.name = name; | |
2131 | data->arg.attrs = sattr; | |
2132 | data->arg.ftype = ftype; | |
2133 | data->arg.bitmask = server->attr_bitmask; | |
2134 | data->res.server = server; | |
2135 | data->res.fh = &data->fh; | |
2136 | data->res.fattr = &data->fattr; | |
2137 | data->res.dir_fattr = &data->dir_fattr; | |
2138 | nfs_fattr_init(data->res.fattr); | |
2139 | nfs_fattr_init(data->res.dir_fattr); | |
2140 | } | |
2141 | return data; | |
2142 | } | |
2143 | ||
2144 | static int nfs4_do_create(struct inode *dir, struct dentry *dentry, struct nfs4_createdata *data) | |
2145 | { | |
2146 | int status = rpc_call_sync(NFS_CLIENT(dir), &data->msg, 0); | |
2147 | if (status == 0) { | |
2148 | update_changeattr(dir, &data->res.dir_cinfo); | |
2149 | nfs_post_op_update_inode(dir, data->res.dir_fattr); | |
2150 | status = nfs_instantiate(dentry, data->res.fh, data->res.fattr); | |
2151 | } | |
2152 | return status; | |
2153 | } | |
2154 | ||
2155 | static void nfs4_free_createdata(struct nfs4_createdata *data) | |
2156 | { | |
2157 | kfree(data); | |
2158 | } | |
2159 | ||
4f390c15 | 2160 | static int _nfs4_proc_symlink(struct inode *dir, struct dentry *dentry, |
94a6d753 | 2161 | struct page *page, unsigned int len, struct iattr *sattr) |
1da177e4 | 2162 | { |
57dc9a57 TM |
2163 | struct nfs4_createdata *data; |
2164 | int status = -ENAMETOOLONG; | |
1da177e4 | 2165 | |
94a6d753 | 2166 | if (len > NFS4_MAXPATHLEN) |
57dc9a57 | 2167 | goto out; |
4f390c15 | 2168 | |
57dc9a57 TM |
2169 | status = -ENOMEM; |
2170 | data = nfs4_alloc_createdata(dir, &dentry->d_name, sattr, NF4LNK); | |
2171 | if (data == NULL) | |
2172 | goto out; | |
2173 | ||
2174 | data->msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SYMLINK]; | |
2175 | data->arg.u.symlink.pages = &page; | |
2176 | data->arg.u.symlink.len = len; | |
1da177e4 | 2177 | |
57dc9a57 TM |
2178 | status = nfs4_do_create(dir, dentry, data); |
2179 | ||
2180 | nfs4_free_createdata(data); | |
2181 | out: | |
1da177e4 LT |
2182 | return status; |
2183 | } | |
2184 | ||
4f390c15 | 2185 | static int nfs4_proc_symlink(struct inode *dir, struct dentry *dentry, |
94a6d753 | 2186 | struct page *page, unsigned int len, struct iattr *sattr) |
1da177e4 LT |
2187 | { |
2188 | struct nfs4_exception exception = { }; | |
2189 | int err; | |
2190 | do { | |
2191 | err = nfs4_handle_exception(NFS_SERVER(dir), | |
94a6d753 CL |
2192 | _nfs4_proc_symlink(dir, dentry, page, |
2193 | len, sattr), | |
1da177e4 LT |
2194 | &exception); |
2195 | } while (exception.retry); | |
2196 | return err; | |
2197 | } | |
2198 | ||
2199 | static int _nfs4_proc_mkdir(struct inode *dir, struct dentry *dentry, | |
2200 | struct iattr *sattr) | |
2201 | { | |
57dc9a57 TM |
2202 | struct nfs4_createdata *data; |
2203 | int status = -ENOMEM; | |
1da177e4 | 2204 | |
57dc9a57 TM |
2205 | data = nfs4_alloc_createdata(dir, &dentry->d_name, sattr, NF4DIR); |
2206 | if (data == NULL) | |
2207 | goto out; | |
2208 | ||
2209 | status = nfs4_do_create(dir, dentry, data); | |
2210 | ||
2211 | nfs4_free_createdata(data); | |
2212 | out: | |
1da177e4 LT |
2213 | return status; |
2214 | } | |
2215 | ||
2216 | static int nfs4_proc_mkdir(struct inode *dir, struct dentry *dentry, | |
2217 | struct iattr *sattr) | |
2218 | { | |
2219 | struct nfs4_exception exception = { }; | |
2220 | int err; | |
2221 | do { | |
2222 | err = nfs4_handle_exception(NFS_SERVER(dir), | |
2223 | _nfs4_proc_mkdir(dir, dentry, sattr), | |
2224 | &exception); | |
2225 | } while (exception.retry); | |
2226 | return err; | |
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 inode *dir = dentry->d_inode; | |
2233 | struct nfs4_readdir_arg args = { | |
2234 | .fh = NFS_FH(dir), | |
2235 | .pages = &page, | |
2236 | .pgbase = 0, | |
2237 | .count = count, | |
2238 | .bitmask = NFS_SERVER(dentry->d_inode)->attr_bitmask, | |
2239 | }; | |
2240 | struct nfs4_readdir_res res; | |
2241 | struct rpc_message msg = { | |
2242 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_READDIR], | |
2243 | .rpc_argp = &args, | |
2244 | .rpc_resp = &res, | |
2245 | .rpc_cred = cred, | |
2246 | }; | |
2247 | int status; | |
2248 | ||
3110ff80 | 2249 | dprintk("%s: dentry = %s/%s, cookie = %Lu\n", __func__, |
eadf4598 TM |
2250 | dentry->d_parent->d_name.name, |
2251 | dentry->d_name.name, | |
2252 | (unsigned long long)cookie); | |
1da177e4 LT |
2253 | nfs4_setup_readdir(cookie, NFS_COOKIEVERF(dir), dentry, &args); |
2254 | res.pgbase = args.pgbase; | |
2255 | status = rpc_call_sync(NFS_CLIENT(dir), &msg, 0); | |
2256 | if (status == 0) | |
2257 | memcpy(NFS_COOKIEVERF(dir), res.verifier.data, NFS4_VERIFIER_SIZE); | |
c4812998 TM |
2258 | |
2259 | nfs_invalidate_atime(dir); | |
2260 | ||
3110ff80 | 2261 | dprintk("%s: returns %d\n", __func__, status); |
1da177e4 LT |
2262 | return status; |
2263 | } | |
2264 | ||
2265 | static int nfs4_proc_readdir(struct dentry *dentry, struct rpc_cred *cred, | |
2266 | u64 cookie, struct page *page, unsigned int count, int plus) | |
2267 | { | |
2268 | struct nfs4_exception exception = { }; | |
2269 | int err; | |
2270 | do { | |
2271 | err = nfs4_handle_exception(NFS_SERVER(dentry->d_inode), | |
2272 | _nfs4_proc_readdir(dentry, cred, cookie, | |
2273 | page, count, plus), | |
2274 | &exception); | |
2275 | } while (exception.retry); | |
2276 | return err; | |
2277 | } | |
2278 | ||
2279 | static int _nfs4_proc_mknod(struct inode *dir, struct dentry *dentry, | |
2280 | struct iattr *sattr, dev_t rdev) | |
2281 | { | |
57dc9a57 TM |
2282 | struct nfs4_createdata *data; |
2283 | int mode = sattr->ia_mode; | |
2284 | int status = -ENOMEM; | |
1da177e4 LT |
2285 | |
2286 | BUG_ON(!(sattr->ia_valid & ATTR_MODE)); | |
2287 | BUG_ON(!S_ISFIFO(mode) && !S_ISBLK(mode) && !S_ISCHR(mode) && !S_ISSOCK(mode)); | |
57dc9a57 TM |
2288 | |
2289 | data = nfs4_alloc_createdata(dir, &dentry->d_name, sattr, NF4SOCK); | |
2290 | if (data == NULL) | |
2291 | goto out; | |
2292 | ||
1da177e4 | 2293 | if (S_ISFIFO(mode)) |
57dc9a57 | 2294 | data->arg.ftype = NF4FIFO; |
1da177e4 | 2295 | else if (S_ISBLK(mode)) { |
57dc9a57 TM |
2296 | data->arg.ftype = NF4BLK; |
2297 | data->arg.u.device.specdata1 = MAJOR(rdev); | |
2298 | data->arg.u.device.specdata2 = MINOR(rdev); | |
1da177e4 LT |
2299 | } |
2300 | else if (S_ISCHR(mode)) { | |
57dc9a57 TM |
2301 | data->arg.ftype = NF4CHR; |
2302 | data->arg.u.device.specdata1 = MAJOR(rdev); | |
2303 | data->arg.u.device.specdata2 = MINOR(rdev); | |
1da177e4 | 2304 | } |
1da177e4 | 2305 | |
57dc9a57 TM |
2306 | status = nfs4_do_create(dir, dentry, data); |
2307 | ||
2308 | nfs4_free_createdata(data); | |
2309 | out: | |
1da177e4 LT |
2310 | return status; |
2311 | } | |
2312 | ||
2313 | static int nfs4_proc_mknod(struct inode *dir, struct dentry *dentry, | |
2314 | struct iattr *sattr, dev_t rdev) | |
2315 | { | |
2316 | struct nfs4_exception exception = { }; | |
2317 | int err; | |
2318 | do { | |
2319 | err = nfs4_handle_exception(NFS_SERVER(dir), | |
2320 | _nfs4_proc_mknod(dir, dentry, sattr, rdev), | |
2321 | &exception); | |
2322 | } while (exception.retry); | |
2323 | return err; | |
2324 | } | |
2325 | ||
2326 | static int _nfs4_proc_statfs(struct nfs_server *server, struct nfs_fh *fhandle, | |
2327 | struct nfs_fsstat *fsstat) | |
2328 | { | |
2329 | struct nfs4_statfs_arg args = { | |
2330 | .fh = fhandle, | |
2331 | .bitmask = server->attr_bitmask, | |
2332 | }; | |
2333 | struct rpc_message msg = { | |
2334 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_STATFS], | |
2335 | .rpc_argp = &args, | |
2336 | .rpc_resp = fsstat, | |
2337 | }; | |
2338 | ||
0e574af1 | 2339 | nfs_fattr_init(fsstat->fattr); |
1da177e4 LT |
2340 | return rpc_call_sync(server->client, &msg, 0); |
2341 | } | |
2342 | ||
2343 | static int nfs4_proc_statfs(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fsstat *fsstat) | |
2344 | { | |
2345 | struct nfs4_exception exception = { }; | |
2346 | int err; | |
2347 | do { | |
2348 | err = nfs4_handle_exception(server, | |
2349 | _nfs4_proc_statfs(server, fhandle, fsstat), | |
2350 | &exception); | |
2351 | } while (exception.retry); | |
2352 | return err; | |
2353 | } | |
2354 | ||
2355 | static int _nfs4_do_fsinfo(struct nfs_server *server, struct nfs_fh *fhandle, | |
2356 | struct nfs_fsinfo *fsinfo) | |
2357 | { | |
2358 | struct nfs4_fsinfo_arg args = { | |
2359 | .fh = fhandle, | |
2360 | .bitmask = server->attr_bitmask, | |
2361 | }; | |
2362 | struct rpc_message msg = { | |
2363 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_FSINFO], | |
2364 | .rpc_argp = &args, | |
2365 | .rpc_resp = fsinfo, | |
2366 | }; | |
2367 | ||
2368 | return rpc_call_sync(server->client, &msg, 0); | |
2369 | } | |
2370 | ||
2371 | static int nfs4_do_fsinfo(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fsinfo *fsinfo) | |
2372 | { | |
2373 | struct nfs4_exception exception = { }; | |
2374 | int err; | |
2375 | ||
2376 | do { | |
2377 | err = nfs4_handle_exception(server, | |
2378 | _nfs4_do_fsinfo(server, fhandle, fsinfo), | |
2379 | &exception); | |
2380 | } while (exception.retry); | |
2381 | return err; | |
2382 | } | |
2383 | ||
2384 | static int nfs4_proc_fsinfo(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fsinfo *fsinfo) | |
2385 | { | |
0e574af1 | 2386 | nfs_fattr_init(fsinfo->fattr); |
1da177e4 LT |
2387 | return nfs4_do_fsinfo(server, fhandle, fsinfo); |
2388 | } | |
2389 | ||
2390 | static int _nfs4_proc_pathconf(struct nfs_server *server, struct nfs_fh *fhandle, | |
2391 | struct nfs_pathconf *pathconf) | |
2392 | { | |
2393 | struct nfs4_pathconf_arg args = { | |
2394 | .fh = fhandle, | |
2395 | .bitmask = server->attr_bitmask, | |
2396 | }; | |
2397 | struct rpc_message msg = { | |
2398 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_PATHCONF], | |
2399 | .rpc_argp = &args, | |
2400 | .rpc_resp = pathconf, | |
2401 | }; | |
2402 | ||
2403 | /* None of the pathconf attributes are mandatory to implement */ | |
2404 | if ((args.bitmask[0] & nfs4_pathconf_bitmap[0]) == 0) { | |
2405 | memset(pathconf, 0, sizeof(*pathconf)); | |
2406 | return 0; | |
2407 | } | |
2408 | ||
0e574af1 | 2409 | nfs_fattr_init(pathconf->fattr); |
1da177e4 LT |
2410 | return rpc_call_sync(server->client, &msg, 0); |
2411 | } | |
2412 | ||
2413 | static int nfs4_proc_pathconf(struct nfs_server *server, struct nfs_fh *fhandle, | |
2414 | struct nfs_pathconf *pathconf) | |
2415 | { | |
2416 | struct nfs4_exception exception = { }; | |
2417 | int err; | |
2418 | ||
2419 | do { | |
2420 | err = nfs4_handle_exception(server, | |
2421 | _nfs4_proc_pathconf(server, fhandle, pathconf), | |
2422 | &exception); | |
2423 | } while (exception.retry); | |
2424 | return err; | |
2425 | } | |
2426 | ||
ec06c096 | 2427 | static int nfs4_read_done(struct rpc_task *task, struct nfs_read_data *data) |
1da177e4 | 2428 | { |
ec06c096 | 2429 | struct nfs_server *server = NFS_SERVER(data->inode); |
1da177e4 | 2430 | |
ec06c096 | 2431 | if (nfs4_async_handle_error(task, server) == -EAGAIN) { |
1da177e4 | 2432 | rpc_restart_call(task); |
ec06c096 | 2433 | return -EAGAIN; |
1da177e4 | 2434 | } |
8850df99 TM |
2435 | |
2436 | nfs_invalidate_atime(data->inode); | |
1da177e4 | 2437 | if (task->tk_status > 0) |
ec06c096 TM |
2438 | renew_lease(server, data->timestamp); |
2439 | return 0; | |
1da177e4 LT |
2440 | } |
2441 | ||
bdc7f021 | 2442 | static void nfs4_proc_read_setup(struct nfs_read_data *data, struct rpc_message *msg) |
1da177e4 | 2443 | { |
1da177e4 | 2444 | data->timestamp = jiffies; |
bdc7f021 | 2445 | msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_READ]; |
1da177e4 LT |
2446 | } |
2447 | ||
788e7a89 | 2448 | static int nfs4_write_done(struct rpc_task *task, struct nfs_write_data *data) |
1da177e4 | 2449 | { |
1da177e4 LT |
2450 | struct inode *inode = data->inode; |
2451 | ||
2452 | if (nfs4_async_handle_error(task, NFS_SERVER(inode)) == -EAGAIN) { | |
2453 | rpc_restart_call(task); | |
788e7a89 | 2454 | return -EAGAIN; |
1da177e4 | 2455 | } |
4f9838c7 | 2456 | if (task->tk_status >= 0) { |
1da177e4 | 2457 | renew_lease(NFS_SERVER(inode), data->timestamp); |
70ca8852 | 2458 | nfs_post_op_update_inode_force_wcc(inode, data->res.fattr); |
4f9838c7 | 2459 | } |
788e7a89 | 2460 | return 0; |
1da177e4 LT |
2461 | } |
2462 | ||
bdc7f021 | 2463 | static void nfs4_proc_write_setup(struct nfs_write_data *data, struct rpc_message *msg) |
1da177e4 | 2464 | { |
bdc7f021 TM |
2465 | struct nfs_server *server = NFS_SERVER(data->inode); |
2466 | ||
4f9838c7 TM |
2467 | data->args.bitmask = server->attr_bitmask; |
2468 | data->res.server = server; | |
1da177e4 LT |
2469 | data->timestamp = jiffies; |
2470 | ||
bdc7f021 | 2471 | msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_WRITE]; |
1da177e4 LT |
2472 | } |
2473 | ||
788e7a89 | 2474 | static int nfs4_commit_done(struct rpc_task *task, struct nfs_write_data *data) |
1da177e4 | 2475 | { |
1da177e4 LT |
2476 | struct inode *inode = data->inode; |
2477 | ||
2478 | if (nfs4_async_handle_error(task, NFS_SERVER(inode)) == -EAGAIN) { | |
2479 | rpc_restart_call(task); | |
788e7a89 | 2480 | return -EAGAIN; |
1da177e4 | 2481 | } |
9e08a3c5 | 2482 | nfs_refresh_inode(inode, data->res.fattr); |
788e7a89 | 2483 | return 0; |
1da177e4 LT |
2484 | } |
2485 | ||
bdc7f021 | 2486 | static void nfs4_proc_commit_setup(struct nfs_write_data *data, struct rpc_message *msg) |
1da177e4 | 2487 | { |
788e7a89 | 2488 | struct nfs_server *server = NFS_SERVER(data->inode); |
1da177e4 | 2489 | |
4f9838c7 TM |
2490 | data->args.bitmask = server->attr_bitmask; |
2491 | data->res.server = server; | |
bdc7f021 | 2492 | msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_COMMIT]; |
1da177e4 LT |
2493 | } |
2494 | ||
2495 | /* | |
2496 | * nfs4_proc_async_renew(): This is not one of the nfs_rpc_ops; it is a special | |
2497 | * standalone procedure for queueing an asynchronous RENEW. | |
2498 | */ | |
963d8fe5 | 2499 | static void nfs4_renew_done(struct rpc_task *task, void *data) |
1da177e4 | 2500 | { |
adfa6f98 | 2501 | struct nfs_client *clp = (struct nfs_client *)task->tk_msg.rpc_argp; |
963d8fe5 | 2502 | unsigned long timestamp = (unsigned long)data; |
1da177e4 LT |
2503 | |
2504 | if (task->tk_status < 0) { | |
2505 | switch (task->tk_status) { | |
2506 | case -NFS4ERR_STALE_CLIENTID: | |
2507 | case -NFS4ERR_EXPIRED: | |
2508 | case -NFS4ERR_CB_PATH_DOWN: | |
2509 | nfs4_schedule_state_recovery(clp); | |
2510 | } | |
2511 | return; | |
2512 | } | |
2513 | spin_lock(&clp->cl_lock); | |
2514 | if (time_before(clp->cl_last_renewal,timestamp)) | |
2515 | clp->cl_last_renewal = timestamp; | |
2516 | spin_unlock(&clp->cl_lock); | |
2517 | } | |
2518 | ||
963d8fe5 TM |
2519 | static const struct rpc_call_ops nfs4_renew_ops = { |
2520 | .rpc_call_done = nfs4_renew_done, | |
2521 | }; | |
2522 | ||
adfa6f98 | 2523 | int nfs4_proc_async_renew(struct nfs_client *clp, struct rpc_cred *cred) |
1da177e4 LT |
2524 | { |
2525 | struct rpc_message msg = { | |
2526 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RENEW], | |
2527 | .rpc_argp = clp, | |
b4454fe1 | 2528 | .rpc_cred = cred, |
1da177e4 LT |
2529 | }; |
2530 | ||
2531 | return rpc_call_async(clp->cl_rpcclient, &msg, RPC_TASK_SOFT, | |
963d8fe5 | 2532 | &nfs4_renew_ops, (void *)jiffies); |
1da177e4 LT |
2533 | } |
2534 | ||
adfa6f98 | 2535 | int nfs4_proc_renew(struct nfs_client *clp, struct rpc_cred *cred) |
1da177e4 LT |
2536 | { |
2537 | struct rpc_message msg = { | |
2538 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RENEW], | |
2539 | .rpc_argp = clp, | |
b4454fe1 | 2540 | .rpc_cred = cred, |
1da177e4 LT |
2541 | }; |
2542 | unsigned long now = jiffies; | |
2543 | int status; | |
2544 | ||
2545 | status = rpc_call_sync(clp->cl_rpcclient, &msg, 0); | |
2546 | if (status < 0) | |
2547 | return status; | |
2548 | spin_lock(&clp->cl_lock); | |
2549 | if (time_before(clp->cl_last_renewal,now)) | |
2550 | clp->cl_last_renewal = now; | |
2551 | spin_unlock(&clp->cl_lock); | |
2552 | return 0; | |
2553 | } | |
2554 | ||
aa1870af BF |
2555 | static inline int nfs4_server_supports_acls(struct nfs_server *server) |
2556 | { | |
2557 | return (server->caps & NFS_CAP_ACLS) | |
2558 | && (server->acl_bitmask & ACL4_SUPPORT_ALLOW_ACL) | |
2559 | && (server->acl_bitmask & ACL4_SUPPORT_DENY_ACL); | |
2560 | } | |
2561 | ||
2562 | /* Assuming that XATTR_SIZE_MAX is a multiple of PAGE_CACHE_SIZE, and that | |
2563 | * it's OK to put sizeof(void) * (XATTR_SIZE_MAX/PAGE_CACHE_SIZE) bytes on | |
2564 | * the stack. | |
2565 | */ | |
2566 | #define NFS4ACL_MAXPAGES (XATTR_SIZE_MAX >> PAGE_CACHE_SHIFT) | |
2567 | ||
2568 | static void buf_to_pages(const void *buf, size_t buflen, | |
2569 | struct page **pages, unsigned int *pgbase) | |
2570 | { | |
2571 | const void *p = buf; | |
2572 | ||
2573 | *pgbase = offset_in_page(buf); | |
2574 | p -= *pgbase; | |
2575 | while (p < buf + buflen) { | |
2576 | *(pages++) = virt_to_page(p); | |
2577 | p += PAGE_CACHE_SIZE; | |
2578 | } | |
2579 | } | |
2580 | ||
e50a1c2e BF |
2581 | struct nfs4_cached_acl { |
2582 | int cached; | |
2583 | size_t len; | |
3e9d4154 | 2584 | char data[0]; |
e50a1c2e BF |
2585 | }; |
2586 | ||
2587 | static void nfs4_set_cached_acl(struct inode *inode, struct nfs4_cached_acl *acl) | |
2588 | { | |
2589 | struct nfs_inode *nfsi = NFS_I(inode); | |
2590 | ||
2591 | spin_lock(&inode->i_lock); | |
2592 | kfree(nfsi->nfs4_acl); | |
2593 | nfsi->nfs4_acl = acl; | |
2594 | spin_unlock(&inode->i_lock); | |
2595 | } | |
2596 | ||
2597 | static void nfs4_zap_acl_attr(struct inode *inode) | |
2598 | { | |
2599 | nfs4_set_cached_acl(inode, NULL); | |
2600 | } | |
2601 | ||
2602 | static inline ssize_t nfs4_read_cached_acl(struct inode *inode, char *buf, size_t buflen) | |
2603 | { | |
2604 | struct nfs_inode *nfsi = NFS_I(inode); | |
2605 | struct nfs4_cached_acl *acl; | |
2606 | int ret = -ENOENT; | |
2607 | ||
2608 | spin_lock(&inode->i_lock); | |
2609 | acl = nfsi->nfs4_acl; | |
2610 | if (acl == NULL) | |
2611 | goto out; | |
2612 | if (buf == NULL) /* user is just asking for length */ | |
2613 | goto out_len; | |
2614 | if (acl->cached == 0) | |
2615 | goto out; | |
2616 | ret = -ERANGE; /* see getxattr(2) man page */ | |
2617 | if (acl->len > buflen) | |
2618 | goto out; | |
2619 | memcpy(buf, acl->data, acl->len); | |
2620 | out_len: | |
2621 | ret = acl->len; | |
2622 | out: | |
2623 | spin_unlock(&inode->i_lock); | |
2624 | return ret; | |
2625 | } | |
2626 | ||
2627 | static void nfs4_write_cached_acl(struct inode *inode, const char *buf, size_t acl_len) | |
2628 | { | |
2629 | struct nfs4_cached_acl *acl; | |
2630 | ||
2631 | if (buf && acl_len <= PAGE_SIZE) { | |
2632 | acl = kmalloc(sizeof(*acl) + acl_len, GFP_KERNEL); | |
2633 | if (acl == NULL) | |
2634 | goto out; | |
2635 | acl->cached = 1; | |
2636 | memcpy(acl->data, buf, acl_len); | |
2637 | } else { | |
2638 | acl = kmalloc(sizeof(*acl), GFP_KERNEL); | |
2639 | if (acl == NULL) | |
2640 | goto out; | |
2641 | acl->cached = 0; | |
2642 | } | |
2643 | acl->len = acl_len; | |
2644 | out: | |
2645 | nfs4_set_cached_acl(inode, acl); | |
2646 | } | |
2647 | ||
16b4289c | 2648 | static ssize_t __nfs4_get_acl_uncached(struct inode *inode, void *buf, size_t buflen) |
aa1870af | 2649 | { |
aa1870af BF |
2650 | struct page *pages[NFS4ACL_MAXPAGES]; |
2651 | struct nfs_getaclargs args = { | |
2652 | .fh = NFS_FH(inode), | |
2653 | .acl_pages = pages, | |
2654 | .acl_len = buflen, | |
2655 | }; | |
2656 | size_t resp_len = buflen; | |
e50a1c2e | 2657 | void *resp_buf; |
aa1870af BF |
2658 | struct rpc_message msg = { |
2659 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GETACL], | |
2660 | .rpc_argp = &args, | |
2661 | .rpc_resp = &resp_len, | |
2662 | }; | |
e50a1c2e | 2663 | struct page *localpage = NULL; |
aa1870af BF |
2664 | int ret; |
2665 | ||
e50a1c2e BF |
2666 | if (buflen < PAGE_SIZE) { |
2667 | /* As long as we're doing a round trip to the server anyway, | |
2668 | * let's be prepared for a page of acl data. */ | |
2669 | localpage = alloc_page(GFP_KERNEL); | |
2670 | resp_buf = page_address(localpage); | |
2671 | if (localpage == NULL) | |
2672 | return -ENOMEM; | |
2673 | args.acl_pages[0] = localpage; | |
2674 | args.acl_pgbase = 0; | |
1d95db8e | 2675 | resp_len = args.acl_len = PAGE_SIZE; |
e50a1c2e BF |
2676 | } else { |
2677 | resp_buf = buf; | |
2678 | buf_to_pages(buf, buflen, args.acl_pages, &args.acl_pgbase); | |
2679 | } | |
aa1870af | 2680 | ret = rpc_call_sync(NFS_CLIENT(inode), &msg, 0); |
e50a1c2e BF |
2681 | if (ret) |
2682 | goto out_free; | |
2683 | if (resp_len > args.acl_len) | |
2684 | nfs4_write_cached_acl(inode, NULL, resp_len); | |
2685 | else | |
2686 | nfs4_write_cached_acl(inode, resp_buf, resp_len); | |
2687 | if (buf) { | |
2688 | ret = -ERANGE; | |
2689 | if (resp_len > buflen) | |
2690 | goto out_free; | |
2691 | if (localpage) | |
2692 | memcpy(buf, resp_buf, resp_len); | |
2693 | } | |
2694 | ret = resp_len; | |
2695 | out_free: | |
2696 | if (localpage) | |
2697 | __free_page(localpage); | |
aa1870af BF |
2698 | return ret; |
2699 | } | |
2700 | ||
16b4289c TM |
2701 | static ssize_t nfs4_get_acl_uncached(struct inode *inode, void *buf, size_t buflen) |
2702 | { | |
2703 | struct nfs4_exception exception = { }; | |
2704 | ssize_t ret; | |
2705 | do { | |
2706 | ret = __nfs4_get_acl_uncached(inode, buf, buflen); | |
2707 | if (ret >= 0) | |
2708 | break; | |
2709 | ret = nfs4_handle_exception(NFS_SERVER(inode), ret, &exception); | |
2710 | } while (exception.retry); | |
2711 | return ret; | |
2712 | } | |
2713 | ||
e50a1c2e BF |
2714 | static ssize_t nfs4_proc_get_acl(struct inode *inode, void *buf, size_t buflen) |
2715 | { | |
2716 | struct nfs_server *server = NFS_SERVER(inode); | |
2717 | int ret; | |
2718 | ||
2719 | if (!nfs4_server_supports_acls(server)) | |
2720 | return -EOPNOTSUPP; | |
2721 | ret = nfs_revalidate_inode(server, inode); | |
2722 | if (ret < 0) | |
2723 | return ret; | |
f41f7418 TM |
2724 | if (NFS_I(inode)->cache_validity & NFS_INO_INVALID_ACL) |
2725 | nfs_zap_acl_cache(inode); | |
e50a1c2e BF |
2726 | ret = nfs4_read_cached_acl(inode, buf, buflen); |
2727 | if (ret != -ENOENT) | |
2728 | return ret; | |
2729 | return nfs4_get_acl_uncached(inode, buf, buflen); | |
2730 | } | |
2731 | ||
16b4289c | 2732 | static int __nfs4_proc_set_acl(struct inode *inode, const void *buf, size_t buflen) |
4b580ee3 BF |
2733 | { |
2734 | struct nfs_server *server = NFS_SERVER(inode); | |
2735 | struct page *pages[NFS4ACL_MAXPAGES]; | |
2736 | struct nfs_setaclargs arg = { | |
2737 | .fh = NFS_FH(inode), | |
2738 | .acl_pages = pages, | |
2739 | .acl_len = buflen, | |
2740 | }; | |
2741 | struct rpc_message msg = { | |
2742 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SETACL], | |
2743 | .rpc_argp = &arg, | |
2744 | .rpc_resp = NULL, | |
2745 | }; | |
2746 | int ret; | |
2747 | ||
2748 | if (!nfs4_server_supports_acls(server)) | |
2749 | return -EOPNOTSUPP; | |
642ac549 | 2750 | nfs_inode_return_delegation(inode); |
4b580ee3 | 2751 | buf_to_pages(buf, buflen, arg.acl_pages, &arg.acl_pgbase); |
1f163415 | 2752 | ret = rpc_call_sync(NFS_CLIENT(inode), &msg, 0); |
f41f7418 TM |
2753 | nfs_access_zap_cache(inode); |
2754 | nfs_zap_acl_cache(inode); | |
4b580ee3 BF |
2755 | return ret; |
2756 | } | |
2757 | ||
16b4289c TM |
2758 | static int nfs4_proc_set_acl(struct inode *inode, const void *buf, size_t buflen) |
2759 | { | |
2760 | struct nfs4_exception exception = { }; | |
2761 | int err; | |
2762 | do { | |
2763 | err = nfs4_handle_exception(NFS_SERVER(inode), | |
2764 | __nfs4_proc_set_acl(inode, buf, buflen), | |
2765 | &exception); | |
2766 | } while (exception.retry); | |
2767 | return err; | |
2768 | } | |
2769 | ||
1da177e4 | 2770 | static int |
faf5f49c | 2771 | nfs4_async_handle_error(struct rpc_task *task, const struct nfs_server *server) |
1da177e4 | 2772 | { |
7539bbab | 2773 | struct nfs_client *clp = server->nfs_client; |
1da177e4 LT |
2774 | |
2775 | if (!clp || task->tk_status >= 0) | |
2776 | return 0; | |
2777 | switch(task->tk_status) { | |
2778 | case -NFS4ERR_STALE_CLIENTID: | |
2779 | case -NFS4ERR_STALE_STATEID: | |
2780 | case -NFS4ERR_EXPIRED: | |
5d00837b | 2781 | rpc_sleep_on(&clp->cl_rpcwaitq, task, NULL); |
1da177e4 | 2782 | nfs4_schedule_state_recovery(clp); |
433fbe4c | 2783 | if (test_bit(NFS4CLNT_STATE_RECOVER, &clp->cl_state) == 0) |
fda13939 | 2784 | rpc_wake_up_queued_task(&clp->cl_rpcwaitq, task); |
1da177e4 LT |
2785 | task->tk_status = 0; |
2786 | return -EAGAIN; | |
1da177e4 | 2787 | case -NFS4ERR_DELAY: |
2e96d286 | 2788 | nfs_inc_server_stats(server, NFSIOS_DELAY); |
006ea73e | 2789 | case -NFS4ERR_GRACE: |
1da177e4 LT |
2790 | rpc_delay(task, NFS4_POLL_RETRY_MAX); |
2791 | task->tk_status = 0; | |
2792 | return -EAGAIN; | |
2793 | case -NFS4ERR_OLD_STATEID: | |
2794 | task->tk_status = 0; | |
2795 | return -EAGAIN; | |
2796 | } | |
2797 | task->tk_status = nfs4_map_errors(task->tk_status); | |
2798 | return 0; | |
2799 | } | |
2800 | ||
150030b7 | 2801 | static int nfs4_wait_bit_killable(void *word) |
433fbe4c | 2802 | { |
150030b7 | 2803 | if (fatal_signal_pending(current)) |
433fbe4c TM |
2804 | return -ERESTARTSYS; |
2805 | schedule(); | |
2806 | return 0; | |
2807 | } | |
2808 | ||
adfa6f98 | 2809 | static int nfs4_wait_clnt_recover(struct rpc_clnt *clnt, struct nfs_client *clp) |
1da177e4 | 2810 | { |
433fbe4c | 2811 | int res; |
1da177e4 LT |
2812 | |
2813 | might_sleep(); | |
2814 | ||
e148582e TM |
2815 | rwsem_acquire(&clp->cl_sem.dep_map, 0, 0, _RET_IP_); |
2816 | ||
433fbe4c | 2817 | res = wait_on_bit(&clp->cl_state, NFS4CLNT_STATE_RECOVER, |
150030b7 | 2818 | nfs4_wait_bit_killable, TASK_KILLABLE); |
e148582e TM |
2819 | |
2820 | rwsem_release(&clp->cl_sem.dep_map, 1, _RET_IP_); | |
1da177e4 LT |
2821 | return res; |
2822 | } | |
2823 | ||
2824 | static int nfs4_delay(struct rpc_clnt *clnt, long *timeout) | |
2825 | { | |
1da177e4 LT |
2826 | int res = 0; |
2827 | ||
2828 | might_sleep(); | |
2829 | ||
2830 | if (*timeout <= 0) | |
2831 | *timeout = NFS4_POLL_RETRY_MIN; | |
2832 | if (*timeout > NFS4_POLL_RETRY_MAX) | |
2833 | *timeout = NFS4_POLL_RETRY_MAX; | |
150030b7 MW |
2834 | schedule_timeout_killable(*timeout); |
2835 | if (fatal_signal_pending(current)) | |
2836 | res = -ERESTARTSYS; | |
1da177e4 LT |
2837 | *timeout <<= 1; |
2838 | return res; | |
2839 | } | |
2840 | ||
2841 | /* This is the error handling routine for processes that are allowed | |
2842 | * to sleep. | |
2843 | */ | |
10afec90 | 2844 | static int nfs4_handle_exception(const struct nfs_server *server, int errorcode, struct nfs4_exception *exception) |
1da177e4 | 2845 | { |
7539bbab | 2846 | struct nfs_client *clp = server->nfs_client; |
1da177e4 LT |
2847 | int ret = errorcode; |
2848 | ||
2849 | exception->retry = 0; | |
2850 | switch(errorcode) { | |
2851 | case 0: | |
2852 | return 0; | |
2853 | case -NFS4ERR_STALE_CLIENTID: | |
2854 | case -NFS4ERR_STALE_STATEID: | |
2855 | case -NFS4ERR_EXPIRED: | |
433fbe4c | 2856 | nfs4_schedule_state_recovery(clp); |
1da177e4 LT |
2857 | ret = nfs4_wait_clnt_recover(server->client, clp); |
2858 | if (ret == 0) | |
2859 | exception->retry = 1; | |
2860 | break; | |
c514983d | 2861 | case -NFS4ERR_FILE_OPEN: |
1da177e4 LT |
2862 | case -NFS4ERR_GRACE: |
2863 | case -NFS4ERR_DELAY: | |
2864 | ret = nfs4_delay(server->client, &exception->timeout); | |
2c56617d TM |
2865 | if (ret != 0) |
2866 | break; | |
1da177e4 | 2867 | case -NFS4ERR_OLD_STATEID: |
2c56617d | 2868 | exception->retry = 1; |
1da177e4 LT |
2869 | } |
2870 | /* We failed to handle the error */ | |
2871 | return nfs4_map_errors(ret); | |
2872 | } | |
2873 | ||
adfa6f98 | 2874 | int nfs4_proc_setclientid(struct nfs_client *clp, u32 program, unsigned short port, struct rpc_cred *cred) |
1da177e4 LT |
2875 | { |
2876 | nfs4_verifier sc_verifier; | |
2877 | struct nfs4_setclientid setclientid = { | |
2878 | .sc_verifier = &sc_verifier, | |
2879 | .sc_prog = program, | |
2880 | }; | |
2881 | struct rpc_message msg = { | |
2882 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SETCLIENTID], | |
2883 | .rpc_argp = &setclientid, | |
2884 | .rpc_resp = clp, | |
286d7d6a | 2885 | .rpc_cred = cred, |
1da177e4 | 2886 | }; |
bc4785cd | 2887 | __be32 *p; |
1da177e4 LT |
2888 | int loop = 0; |
2889 | int status; | |
2890 | ||
bc4785cd | 2891 | p = (__be32*)sc_verifier.data; |
1da177e4 LT |
2892 | *p++ = htonl((u32)clp->cl_boot_time.tv_sec); |
2893 | *p = htonl((u32)clp->cl_boot_time.tv_nsec); | |
2894 | ||
2895 | for(;;) { | |
2896 | setclientid.sc_name_len = scnprintf(setclientid.sc_name, | |
69dd716c | 2897 | sizeof(setclientid.sc_name), "%s/%s %s %s %u", |
d4d3c507 CL |
2898 | clp->cl_ipaddr, |
2899 | rpc_peeraddr2str(clp->cl_rpcclient, | |
2900 | RPC_DISPLAY_ADDR), | |
69dd716c TM |
2901 | rpc_peeraddr2str(clp->cl_rpcclient, |
2902 | RPC_DISPLAY_PROTO), | |
78ea323b | 2903 | clp->cl_rpcclient->cl_auth->au_ops->au_name, |
1da177e4 LT |
2904 | clp->cl_id_uniquifier); |
2905 | setclientid.sc_netid_len = scnprintf(setclientid.sc_netid, | |
d4d3c507 CL |
2906 | sizeof(setclientid.sc_netid), |
2907 | rpc_peeraddr2str(clp->cl_rpcclient, | |
2908 | RPC_DISPLAY_NETID)); | |
1da177e4 | 2909 | setclientid.sc_uaddr_len = scnprintf(setclientid.sc_uaddr, |
d4d3c507 | 2910 | sizeof(setclientid.sc_uaddr), "%s.%u.%u", |
1da177e4 LT |
2911 | clp->cl_ipaddr, port >> 8, port & 255); |
2912 | ||
2913 | status = rpc_call_sync(clp->cl_rpcclient, &msg, 0); | |
2914 | if (status != -NFS4ERR_CLID_INUSE) | |
2915 | break; | |
2916 | if (signalled()) | |
2917 | break; | |
2918 | if (loop++ & 1) | |
2919 | ssleep(clp->cl_lease_time + 1); | |
2920 | else | |
2921 | if (++clp->cl_id_uniquifier == 0) | |
2922 | break; | |
2923 | } | |
2924 | return status; | |
2925 | } | |
2926 | ||
adfa6f98 | 2927 | static int _nfs4_proc_setclientid_confirm(struct nfs_client *clp, struct rpc_cred *cred) |
1da177e4 LT |
2928 | { |
2929 | struct nfs_fsinfo fsinfo; | |
2930 | struct rpc_message msg = { | |
2931 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SETCLIENTID_CONFIRM], | |
2932 | .rpc_argp = clp, | |
2933 | .rpc_resp = &fsinfo, | |
286d7d6a | 2934 | .rpc_cred = cred, |
1da177e4 LT |
2935 | }; |
2936 | unsigned long now; | |
2937 | int status; | |
2938 | ||
2939 | now = jiffies; | |
2940 | status = rpc_call_sync(clp->cl_rpcclient, &msg, 0); | |
2941 | if (status == 0) { | |
2942 | spin_lock(&clp->cl_lock); | |
2943 | clp->cl_lease_time = fsinfo.lease_time * HZ; | |
2944 | clp->cl_last_renewal = now; | |
58d9714a | 2945 | clear_bit(NFS4CLNT_LEASE_EXPIRED, &clp->cl_state); |
1da177e4 LT |
2946 | spin_unlock(&clp->cl_lock); |
2947 | } | |
2948 | return status; | |
2949 | } | |
2950 | ||
adfa6f98 | 2951 | int nfs4_proc_setclientid_confirm(struct nfs_client *clp, struct rpc_cred *cred) |
51581f3b | 2952 | { |
77e03677 | 2953 | long timeout = 0; |
51581f3b TM |
2954 | int err; |
2955 | do { | |
2956 | err = _nfs4_proc_setclientid_confirm(clp, cred); | |
2957 | switch (err) { | |
2958 | case 0: | |
2959 | return err; | |
2960 | case -NFS4ERR_RESOURCE: | |
2961 | /* The IBM lawyers misread another document! */ | |
2962 | case -NFS4ERR_DELAY: | |
2963 | err = nfs4_delay(clp->cl_rpcclient, &timeout); | |
2964 | } | |
2965 | } while (err == 0); | |
2966 | return err; | |
2967 | } | |
2968 | ||
fe650407 TM |
2969 | struct nfs4_delegreturndata { |
2970 | struct nfs4_delegreturnargs args; | |
fa178f29 | 2971 | struct nfs4_delegreturnres res; |
fe650407 TM |
2972 | struct nfs_fh fh; |
2973 | nfs4_stateid stateid; | |
26e976a8 | 2974 | unsigned long timestamp; |
fa178f29 | 2975 | struct nfs_fattr fattr; |
fe650407 TM |
2976 | int rpc_status; |
2977 | }; | |
2978 | ||
fe650407 TM |
2979 | static void nfs4_delegreturn_done(struct rpc_task *task, void *calldata) |
2980 | { | |
2981 | struct nfs4_delegreturndata *data = calldata; | |
2982 | data->rpc_status = task->tk_status; | |
26e976a8 | 2983 | if (data->rpc_status == 0) |
fa178f29 | 2984 | renew_lease(data->res.server, data->timestamp); |
fe650407 TM |
2985 | } |
2986 | ||
2987 | static void nfs4_delegreturn_release(void *calldata) | |
2988 | { | |
fe650407 TM |
2989 | kfree(calldata); |
2990 | } | |
2991 | ||
c8d149f3 | 2992 | static const struct rpc_call_ops nfs4_delegreturn_ops = { |
fe650407 TM |
2993 | .rpc_call_done = nfs4_delegreturn_done, |
2994 | .rpc_release = nfs4_delegreturn_release, | |
2995 | }; | |
2996 | ||
e6f81075 | 2997 | static int _nfs4_proc_delegreturn(struct inode *inode, struct rpc_cred *cred, const nfs4_stateid *stateid, int issync) |
fe650407 TM |
2998 | { |
2999 | struct nfs4_delegreturndata *data; | |
fa178f29 | 3000 | struct nfs_server *server = NFS_SERVER(inode); |
fe650407 | 3001 | struct rpc_task *task; |
5138fde0 TM |
3002 | struct rpc_message msg = { |
3003 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_DELEGRETURN], | |
3004 | .rpc_cred = cred, | |
3005 | }; | |
c970aa85 TM |
3006 | struct rpc_task_setup task_setup_data = { |
3007 | .rpc_client = server->client, | |
5138fde0 | 3008 | .rpc_message = &msg, |
c970aa85 TM |
3009 | .callback_ops = &nfs4_delegreturn_ops, |
3010 | .flags = RPC_TASK_ASYNC, | |
3011 | }; | |
e6f81075 | 3012 | int status = 0; |
fe650407 TM |
3013 | |
3014 | data = kmalloc(sizeof(*data), GFP_KERNEL); | |
3015 | if (data == NULL) | |
3016 | return -ENOMEM; | |
3017 | data->args.fhandle = &data->fh; | |
3018 | data->args.stateid = &data->stateid; | |
fa178f29 | 3019 | data->args.bitmask = server->attr_bitmask; |
fe650407 TM |
3020 | nfs_copy_fh(&data->fh, NFS_FH(inode)); |
3021 | memcpy(&data->stateid, stateid, sizeof(data->stateid)); | |
fa178f29 TM |
3022 | data->res.fattr = &data->fattr; |
3023 | data->res.server = server; | |
5138fde0 | 3024 | nfs_fattr_init(data->res.fattr); |
26e976a8 | 3025 | data->timestamp = jiffies; |
fe650407 TM |
3026 | data->rpc_status = 0; |
3027 | ||
c970aa85 | 3028 | task_setup_data.callback_data = data; |
5138fde0 TM |
3029 | msg.rpc_argp = &data->args, |
3030 | msg.rpc_resp = &data->res, | |
c970aa85 | 3031 | task = rpc_run_task(&task_setup_data); |
7a1218a2 | 3032 | if (IS_ERR(task)) |
fe650407 | 3033 | return PTR_ERR(task); |
e6f81075 TM |
3034 | if (!issync) |
3035 | goto out; | |
fe650407 | 3036 | status = nfs4_wait_for_completion_rpc_task(task); |
e6f81075 TM |
3037 | if (status != 0) |
3038 | goto out; | |
3039 | status = data->rpc_status; | |
3040 | if (status != 0) | |
3041 | goto out; | |
3042 | nfs_refresh_inode(inode, &data->fattr); | |
3043 | out: | |
e6b3c4db | 3044 | rpc_put_task(task); |
fe650407 | 3045 | return status; |
1da177e4 LT |
3046 | } |
3047 | ||
e6f81075 | 3048 | int nfs4_proc_delegreturn(struct inode *inode, struct rpc_cred *cred, const nfs4_stateid *stateid, int issync) |
1da177e4 LT |
3049 | { |
3050 | struct nfs_server *server = NFS_SERVER(inode); | |
3051 | struct nfs4_exception exception = { }; | |
3052 | int err; | |
3053 | do { | |
e6f81075 | 3054 | err = _nfs4_proc_delegreturn(inode, cred, stateid, issync); |
1da177e4 LT |
3055 | switch (err) { |
3056 | case -NFS4ERR_STALE_STATEID: | |
3057 | case -NFS4ERR_EXPIRED: | |
1da177e4 LT |
3058 | case 0: |
3059 | return 0; | |
3060 | } | |
3061 | err = nfs4_handle_exception(server, err, &exception); | |
3062 | } while (exception.retry); | |
3063 | return err; | |
3064 | } | |
3065 | ||
3066 | #define NFS4_LOCK_MINTIMEOUT (1 * HZ) | |
3067 | #define NFS4_LOCK_MAXTIMEOUT (30 * HZ) | |
3068 | ||
3069 | /* | |
3070 | * sleep, with exponential backoff, and retry the LOCK operation. | |
3071 | */ | |
3072 | static unsigned long | |
3073 | nfs4_set_lock_task_retry(unsigned long timeout) | |
3074 | { | |
150030b7 | 3075 | schedule_timeout_killable(timeout); |
1da177e4 LT |
3076 | timeout <<= 1; |
3077 | if (timeout > NFS4_LOCK_MAXTIMEOUT) | |
3078 | return NFS4_LOCK_MAXTIMEOUT; | |
3079 | return timeout; | |
3080 | } | |
3081 | ||
1da177e4 LT |
3082 | static int _nfs4_proc_getlk(struct nfs4_state *state, int cmd, struct file_lock *request) |
3083 | { | |
3084 | struct inode *inode = state->inode; | |
3085 | struct nfs_server *server = NFS_SERVER(inode); | |
7539bbab | 3086 | struct nfs_client *clp = server->nfs_client; |
911d1aaf | 3087 | struct nfs_lockt_args arg = { |
1da177e4 | 3088 | .fh = NFS_FH(inode), |
911d1aaf | 3089 | .fl = request, |
1da177e4 | 3090 | }; |
911d1aaf TM |
3091 | struct nfs_lockt_res res = { |
3092 | .denied = request, | |
1da177e4 LT |
3093 | }; |
3094 | struct rpc_message msg = { | |
3095 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOCKT], | |
3096 | .rpc_argp = &arg, | |
3097 | .rpc_resp = &res, | |
3098 | .rpc_cred = state->owner->so_cred, | |
3099 | }; | |
1da177e4 LT |
3100 | struct nfs4_lock_state *lsp; |
3101 | int status; | |
3102 | ||
3103 | down_read(&clp->cl_sem); | |
911d1aaf | 3104 | arg.lock_owner.clientid = clp->cl_clientid; |
8d0a8a9d TM |
3105 | status = nfs4_set_lock_state(state, request); |
3106 | if (status != 0) | |
3107 | goto out; | |
3108 | lsp = request->fl_u.nfs4_fl.owner; | |
9f958ab8 | 3109 | arg.lock_owner.id = lsp->ls_id.id; |
1da177e4 | 3110 | status = rpc_call_sync(server->client, &msg, 0); |
911d1aaf TM |
3111 | switch (status) { |
3112 | case 0: | |
3113 | request->fl_type = F_UNLCK; | |
3114 | break; | |
3115 | case -NFS4ERR_DENIED: | |
3116 | status = 0; | |
1da177e4 | 3117 | } |
70cc6487 | 3118 | request->fl_ops->fl_release_private(request); |
8d0a8a9d | 3119 | out: |
1da177e4 LT |
3120 | up_read(&clp->cl_sem); |
3121 | return status; | |
3122 | } | |
3123 | ||
3124 | static int nfs4_proc_getlk(struct nfs4_state *state, int cmd, struct file_lock *request) | |
3125 | { | |
3126 | struct nfs4_exception exception = { }; | |
3127 | int err; | |
3128 | ||
3129 | do { | |
3130 | err = nfs4_handle_exception(NFS_SERVER(state->inode), | |
3131 | _nfs4_proc_getlk(state, cmd, request), | |
3132 | &exception); | |
3133 | } while (exception.retry); | |
3134 | return err; | |
3135 | } | |
3136 | ||
3137 | static int do_vfs_lock(struct file *file, struct file_lock *fl) | |
3138 | { | |
3139 | int res = 0; | |
3140 | switch (fl->fl_flags & (FL_POSIX|FL_FLOCK)) { | |
3141 | case FL_POSIX: | |
3142 | res = posix_lock_file_wait(file, fl); | |
3143 | break; | |
3144 | case FL_FLOCK: | |
3145 | res = flock_lock_file_wait(file, fl); | |
3146 | break; | |
3147 | default: | |
3148 | BUG(); | |
3149 | } | |
1da177e4 LT |
3150 | return res; |
3151 | } | |
3152 | ||
faf5f49c | 3153 | struct nfs4_unlockdata { |
911d1aaf TM |
3154 | struct nfs_locku_args arg; |
3155 | struct nfs_locku_res res; | |
faf5f49c TM |
3156 | struct nfs4_lock_state *lsp; |
3157 | struct nfs_open_context *ctx; | |
911d1aaf TM |
3158 | struct file_lock fl; |
3159 | const struct nfs_server *server; | |
26e976a8 | 3160 | unsigned long timestamp; |
faf5f49c TM |
3161 | }; |
3162 | ||
911d1aaf TM |
3163 | static struct nfs4_unlockdata *nfs4_alloc_unlockdata(struct file_lock *fl, |
3164 | struct nfs_open_context *ctx, | |
3165 | struct nfs4_lock_state *lsp, | |
3166 | struct nfs_seqid *seqid) | |
3167 | { | |
3168 | struct nfs4_unlockdata *p; | |
3169 | struct inode *inode = lsp->ls_state->inode; | |
3170 | ||
3171 | p = kmalloc(sizeof(*p), GFP_KERNEL); | |
3172 | if (p == NULL) | |
3173 | return NULL; | |
3174 | p->arg.fh = NFS_FH(inode); | |
3175 | p->arg.fl = &p->fl; | |
3176 | p->arg.seqid = seqid; | |
c1d51931 | 3177 | p->res.seqid = seqid; |
911d1aaf TM |
3178 | p->arg.stateid = &lsp->ls_stateid; |
3179 | p->lsp = lsp; | |
3180 | atomic_inc(&lsp->ls_count); | |
3181 | /* Ensure we don't close file until we're done freeing locks! */ | |
3182 | p->ctx = get_nfs_open_context(ctx); | |
3183 | memcpy(&p->fl, fl, sizeof(p->fl)); | |
3184 | p->server = NFS_SERVER(inode); | |
3185 | return p; | |
3186 | } | |
3187 | ||
06f814a3 | 3188 | static void nfs4_locku_release_calldata(void *data) |
faf5f49c | 3189 | { |
963d8fe5 | 3190 | struct nfs4_unlockdata *calldata = data; |
911d1aaf | 3191 | nfs_free_seqid(calldata->arg.seqid); |
06f814a3 TM |
3192 | nfs4_put_lock_state(calldata->lsp); |
3193 | put_nfs_open_context(calldata->ctx); | |
3194 | kfree(calldata); | |
faf5f49c TM |
3195 | } |
3196 | ||
963d8fe5 | 3197 | static void nfs4_locku_done(struct rpc_task *task, void *data) |
faf5f49c | 3198 | { |
963d8fe5 | 3199 | struct nfs4_unlockdata *calldata = data; |
faf5f49c | 3200 | |
06f814a3 TM |
3201 | if (RPC_ASSASSINATED(task)) |
3202 | return; | |
faf5f49c TM |
3203 | switch (task->tk_status) { |
3204 | case 0: | |
3205 | memcpy(calldata->lsp->ls_stateid.data, | |
911d1aaf | 3206 | calldata->res.stateid.data, |
faf5f49c | 3207 | sizeof(calldata->lsp->ls_stateid.data)); |
26e976a8 | 3208 | renew_lease(calldata->server, calldata->timestamp); |
faf5f49c TM |
3209 | break; |
3210 | case -NFS4ERR_STALE_STATEID: | |
3211 | case -NFS4ERR_EXPIRED: | |
faf5f49c TM |
3212 | break; |
3213 | default: | |
a6a352e9 | 3214 | if (nfs4_async_handle_error(task, calldata->server) == -EAGAIN) |
faf5f49c | 3215 | rpc_restart_call(task); |
faf5f49c | 3216 | } |
faf5f49c TM |
3217 | } |
3218 | ||
4ce70ada | 3219 | static void nfs4_locku_prepare(struct rpc_task *task, void *data) |
faf5f49c | 3220 | { |
4ce70ada | 3221 | struct nfs4_unlockdata *calldata = data; |
faf5f49c | 3222 | |
911d1aaf | 3223 | if (nfs_wait_on_sequence(calldata->arg.seqid, task) != 0) |
faf5f49c TM |
3224 | return; |
3225 | if ((calldata->lsp->ls_flags & NFS_LOCK_INITIALIZED) == 0) { | |
963d8fe5 TM |
3226 | /* Note: exit _without_ running nfs4_locku_done */ |
3227 | task->tk_action = NULL; | |
faf5f49c TM |
3228 | return; |
3229 | } | |
26e976a8 | 3230 | calldata->timestamp = jiffies; |
5138fde0 | 3231 | rpc_call_start(task); |
faf5f49c TM |
3232 | } |
3233 | ||
963d8fe5 | 3234 | static const struct rpc_call_ops nfs4_locku_ops = { |
4ce70ada | 3235 | .rpc_call_prepare = nfs4_locku_prepare, |
963d8fe5 | 3236 | .rpc_call_done = nfs4_locku_done, |
06f814a3 | 3237 | .rpc_release = nfs4_locku_release_calldata, |
963d8fe5 TM |
3238 | }; |
3239 | ||
a5d16a4d TM |
3240 | static struct rpc_task *nfs4_do_unlck(struct file_lock *fl, |
3241 | struct nfs_open_context *ctx, | |
3242 | struct nfs4_lock_state *lsp, | |
3243 | struct nfs_seqid *seqid) | |
3244 | { | |
3245 | struct nfs4_unlockdata *data; | |
5138fde0 TM |
3246 | struct rpc_message msg = { |
3247 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOCKU], | |
3248 | .rpc_cred = ctx->cred, | |
3249 | }; | |
c970aa85 TM |
3250 | struct rpc_task_setup task_setup_data = { |
3251 | .rpc_client = NFS_CLIENT(lsp->ls_state->inode), | |
5138fde0 | 3252 | .rpc_message = &msg, |
c970aa85 | 3253 | .callback_ops = &nfs4_locku_ops, |
101070ca | 3254 | .workqueue = nfsiod_workqueue, |
c970aa85 TM |
3255 | .flags = RPC_TASK_ASYNC, |
3256 | }; | |
a5d16a4d | 3257 | |
137d6aca FF |
3258 | /* Ensure this is an unlock - when canceling a lock, the |
3259 | * canceled lock is passed in, and it won't be an unlock. | |
3260 | */ | |
3261 | fl->fl_type = F_UNLCK; | |
3262 | ||
a5d16a4d TM |
3263 | data = nfs4_alloc_unlockdata(fl, ctx, lsp, seqid); |
3264 | if (data == NULL) { | |
3265 | nfs_free_seqid(seqid); | |
3266 | return ERR_PTR(-ENOMEM); | |
3267 | } | |
3268 | ||
5138fde0 TM |
3269 | msg.rpc_argp = &data->arg, |
3270 | msg.rpc_resp = &data->res, | |
c970aa85 TM |
3271 | task_setup_data.callback_data = data; |
3272 | return rpc_run_task(&task_setup_data); | |
a5d16a4d TM |
3273 | } |
3274 | ||
faf5f49c TM |
3275 | static int nfs4_proc_unlck(struct nfs4_state *state, int cmd, struct file_lock *request) |
3276 | { | |
911d1aaf | 3277 | struct nfs_seqid *seqid; |
1da177e4 | 3278 | struct nfs4_lock_state *lsp; |
06f814a3 TM |
3279 | struct rpc_task *task; |
3280 | int status = 0; | |
536ff0f8 | 3281 | unsigned char fl_flags = request->fl_flags; |
faf5f49c | 3282 | |
8d0a8a9d | 3283 | status = nfs4_set_lock_state(state, request); |
9b073574 TM |
3284 | /* Unlock _before_ we do the RPC call */ |
3285 | request->fl_flags |= FL_EXISTS; | |
3286 | if (do_vfs_lock(request->fl_file, request) == -ENOENT) | |
3287 | goto out; | |
8d0a8a9d | 3288 | if (status != 0) |
9b073574 TM |
3289 | goto out; |
3290 | /* Is this a delegated lock? */ | |
3291 | if (test_bit(NFS_DELEGATED_STATE, &state->flags)) | |
3292 | goto out; | |
8d0a8a9d | 3293 | lsp = request->fl_u.nfs4_fl.owner; |
911d1aaf | 3294 | seqid = nfs_alloc_seqid(&lsp->ls_seqid); |
9b073574 | 3295 | status = -ENOMEM; |
911d1aaf | 3296 | if (seqid == NULL) |
9b073574 | 3297 | goto out; |
cd3758e3 | 3298 | task = nfs4_do_unlck(request, nfs_file_open_context(request->fl_file), lsp, seqid); |
a5d16a4d TM |
3299 | status = PTR_ERR(task); |
3300 | if (IS_ERR(task)) | |
9b073574 | 3301 | goto out; |
a5d16a4d | 3302 | status = nfs4_wait_for_completion_rpc_task(task); |
e6b3c4db | 3303 | rpc_put_task(task); |
9b073574 | 3304 | out: |
536ff0f8 | 3305 | request->fl_flags = fl_flags; |
1da177e4 LT |
3306 | return status; |
3307 | } | |
3308 | ||
a5d16a4d TM |
3309 | struct nfs4_lockdata { |
3310 | struct nfs_lock_args arg; | |
3311 | struct nfs_lock_res res; | |
3312 | struct nfs4_lock_state *lsp; | |
3313 | struct nfs_open_context *ctx; | |
3314 | struct file_lock fl; | |
26e976a8 | 3315 | unsigned long timestamp; |
a5d16a4d TM |
3316 | int rpc_status; |
3317 | int cancelled; | |
3318 | }; | |
3319 | ||
3320 | static struct nfs4_lockdata *nfs4_alloc_lockdata(struct file_lock *fl, | |
3321 | struct nfs_open_context *ctx, struct nfs4_lock_state *lsp) | |
1da177e4 | 3322 | { |
a5d16a4d TM |
3323 | struct nfs4_lockdata *p; |
3324 | struct inode *inode = lsp->ls_state->inode; | |
1da177e4 | 3325 | struct nfs_server *server = NFS_SERVER(inode); |
a5d16a4d TM |
3326 | |
3327 | p = kzalloc(sizeof(*p), GFP_KERNEL); | |
3328 | if (p == NULL) | |
3329 | return NULL; | |
3330 | ||
3331 | p->arg.fh = NFS_FH(inode); | |
3332 | p->arg.fl = &p->fl; | |
2f74c0a0 TM |
3333 | p->arg.open_seqid = nfs_alloc_seqid(&lsp->ls_state->owner->so_seqid); |
3334 | if (p->arg.open_seqid == NULL) | |
3335 | goto out_free; | |
a5d16a4d TM |
3336 | p->arg.lock_seqid = nfs_alloc_seqid(&lsp->ls_seqid); |
3337 | if (p->arg.lock_seqid == NULL) | |
2f74c0a0 | 3338 | goto out_free_seqid; |
a5d16a4d | 3339 | p->arg.lock_stateid = &lsp->ls_stateid; |
7539bbab | 3340 | p->arg.lock_owner.clientid = server->nfs_client->cl_clientid; |
9f958ab8 | 3341 | p->arg.lock_owner.id = lsp->ls_id.id; |
c1d51931 | 3342 | p->res.lock_seqid = p->arg.lock_seqid; |
a5d16a4d TM |
3343 | p->lsp = lsp; |
3344 | atomic_inc(&lsp->ls_count); | |
3345 | p->ctx = get_nfs_open_context(ctx); | |
3346 | memcpy(&p->fl, fl, sizeof(p->fl)); | |
3347 | return p; | |
2f74c0a0 TM |
3348 | out_free_seqid: |
3349 | nfs_free_seqid(p->arg.open_seqid); | |
a5d16a4d TM |
3350 | out_free: |
3351 | kfree(p); | |
3352 | return NULL; | |
3353 | } | |
3354 | ||
3355 | static void nfs4_lock_prepare(struct rpc_task *task, void *calldata) | |
3356 | { | |
3357 | struct nfs4_lockdata *data = calldata; | |
3358 | struct nfs4_state *state = data->lsp->ls_state; | |
06735b34 | 3359 | |
3110ff80 | 3360 | dprintk("%s: begin!\n", __func__); |
2f74c0a0 TM |
3361 | if (nfs_wait_on_sequence(data->arg.lock_seqid, task) != 0) |
3362 | return; | |
a5d16a4d TM |
3363 | /* Do we need to do an open_to_lock_owner? */ |
3364 | if (!(data->arg.lock_seqid->sequence->flags & NFS_SEQID_CONFIRMED)) { | |
e6e21970 TM |
3365 | if (nfs_wait_on_sequence(data->arg.open_seqid, task) != 0) |
3366 | return; | |
a5d16a4d TM |
3367 | data->arg.open_stateid = &state->stateid; |
3368 | data->arg.new_lock_owner = 1; | |
c1d51931 | 3369 | data->res.open_seqid = data->arg.open_seqid; |
2f74c0a0 TM |
3370 | } else |
3371 | data->arg.new_lock_owner = 0; | |
26e976a8 | 3372 | data->timestamp = jiffies; |
5138fde0 | 3373 | rpc_call_start(task); |
3110ff80 | 3374 | dprintk("%s: done!, ret = %d\n", __func__, data->rpc_status); |
a5d16a4d TM |
3375 | } |
3376 | ||
3377 | static void nfs4_lock_done(struct rpc_task *task, void *calldata) | |
3378 | { | |
3379 | struct nfs4_lockdata *data = calldata; | |
3380 | ||
3110ff80 | 3381 | dprintk("%s: begin!\n", __func__); |
a5d16a4d TM |
3382 | |
3383 | data->rpc_status = task->tk_status; | |
3384 | if (RPC_ASSASSINATED(task)) | |
3385 | goto out; | |
3386 | if (data->arg.new_lock_owner != 0) { | |
a5d16a4d TM |
3387 | if (data->rpc_status == 0) |
3388 | nfs_confirm_seqid(&data->lsp->ls_seqid, 0); | |
3389 | else | |
3390 | goto out; | |
3391 | } | |
3392 | if (data->rpc_status == 0) { | |
3393 | memcpy(data->lsp->ls_stateid.data, data->res.stateid.data, | |
3394 | sizeof(data->lsp->ls_stateid.data)); | |
3395 | data->lsp->ls_flags |= NFS_LOCK_INITIALIZED; | |
88be9f99 | 3396 | renew_lease(NFS_SERVER(data->ctx->path.dentry->d_inode), data->timestamp); |
a5d16a4d | 3397 | } |
a5d16a4d | 3398 | out: |
3110ff80 | 3399 | dprintk("%s: done, ret = %d!\n", __func__, data->rpc_status); |
a5d16a4d TM |
3400 | } |
3401 | ||
3402 | static void nfs4_lock_release(void *calldata) | |
3403 | { | |
3404 | struct nfs4_lockdata *data = calldata; | |
3405 | ||
3110ff80 | 3406 | dprintk("%s: begin!\n", __func__); |
2f74c0a0 | 3407 | nfs_free_seqid(data->arg.open_seqid); |
a5d16a4d TM |
3408 | if (data->cancelled != 0) { |
3409 | struct rpc_task *task; | |
3410 | task = nfs4_do_unlck(&data->fl, data->ctx, data->lsp, | |
3411 | data->arg.lock_seqid); | |
3412 | if (!IS_ERR(task)) | |
e6b3c4db | 3413 | rpc_put_task(task); |
3110ff80 | 3414 | dprintk("%s: cancelling lock!\n", __func__); |
a5d16a4d TM |
3415 | } else |
3416 | nfs_free_seqid(data->arg.lock_seqid); | |
3417 | nfs4_put_lock_state(data->lsp); | |
3418 | put_nfs_open_context(data->ctx); | |
3419 | kfree(data); | |
3110ff80 | 3420 | dprintk("%s: done!\n", __func__); |
a5d16a4d TM |
3421 | } |
3422 | ||
3423 | static const struct rpc_call_ops nfs4_lock_ops = { | |
3424 | .rpc_call_prepare = nfs4_lock_prepare, | |
3425 | .rpc_call_done = nfs4_lock_done, | |
3426 | .rpc_release = nfs4_lock_release, | |
3427 | }; | |
3428 | ||
3429 | static int _nfs4_do_setlk(struct nfs4_state *state, int cmd, struct file_lock *fl, int reclaim) | |
3430 | { | |
3431 | struct nfs4_lockdata *data; | |
3432 | struct rpc_task *task; | |
5138fde0 TM |
3433 | struct rpc_message msg = { |
3434 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOCK], | |
3435 | .rpc_cred = state->owner->so_cred, | |
3436 | }; | |
c970aa85 TM |
3437 | struct rpc_task_setup task_setup_data = { |
3438 | .rpc_client = NFS_CLIENT(state->inode), | |
5138fde0 | 3439 | .rpc_message = &msg, |
c970aa85 | 3440 | .callback_ops = &nfs4_lock_ops, |
101070ca | 3441 | .workqueue = nfsiod_workqueue, |
c970aa85 TM |
3442 | .flags = RPC_TASK_ASYNC, |
3443 | }; | |
a5d16a4d TM |
3444 | int ret; |
3445 | ||
3110ff80 | 3446 | dprintk("%s: begin!\n", __func__); |
cd3758e3 | 3447 | data = nfs4_alloc_lockdata(fl, nfs_file_open_context(fl->fl_file), |
a5d16a4d TM |
3448 | fl->fl_u.nfs4_fl.owner); |
3449 | if (data == NULL) | |
3450 | return -ENOMEM; | |
3451 | if (IS_SETLKW(cmd)) | |
3452 | data->arg.block = 1; | |
3453 | if (reclaim != 0) | |
3454 | data->arg.reclaim = 1; | |
5138fde0 TM |
3455 | msg.rpc_argp = &data->arg, |
3456 | msg.rpc_resp = &data->res, | |
c970aa85 TM |
3457 | task_setup_data.callback_data = data; |
3458 | task = rpc_run_task(&task_setup_data); | |
7a1218a2 | 3459 | if (IS_ERR(task)) |
a5d16a4d | 3460 | return PTR_ERR(task); |
a5d16a4d TM |
3461 | ret = nfs4_wait_for_completion_rpc_task(task); |
3462 | if (ret == 0) { | |
3463 | ret = data->rpc_status; | |
3464 | if (ret == -NFS4ERR_DENIED) | |
3465 | ret = -EAGAIN; | |
3466 | } else | |
3467 | data->cancelled = 1; | |
e6b3c4db | 3468 | rpc_put_task(task); |
3110ff80 | 3469 | dprintk("%s: done, ret = %d!\n", __func__, ret); |
a5d16a4d | 3470 | return ret; |
1da177e4 LT |
3471 | } |
3472 | ||
3473 | static int nfs4_lock_reclaim(struct nfs4_state *state, struct file_lock *request) | |
3474 | { | |
202b50dc TM |
3475 | struct nfs_server *server = NFS_SERVER(state->inode); |
3476 | struct nfs4_exception exception = { }; | |
3477 | int err; | |
3478 | ||
3479 | do { | |
42a2d13e TM |
3480 | /* Cache the lock if possible... */ |
3481 | if (test_bit(NFS_DELEGATED_STATE, &state->flags) != 0) | |
3482 | return 0; | |
202b50dc TM |
3483 | err = _nfs4_do_setlk(state, F_SETLK, request, 1); |
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_lock_expired(struct nfs4_state *state, struct file_lock *request) | |
3492 | { | |
202b50dc TM |
3493 | struct nfs_server *server = NFS_SERVER(state->inode); |
3494 | struct nfs4_exception exception = { }; | |
3495 | int err; | |
3496 | ||
6bfc93ef TM |
3497 | err = nfs4_set_lock_state(state, request); |
3498 | if (err != 0) | |
3499 | return err; | |
202b50dc | 3500 | do { |
42a2d13e TM |
3501 | if (test_bit(NFS_DELEGATED_STATE, &state->flags) != 0) |
3502 | return 0; | |
202b50dc TM |
3503 | err = _nfs4_do_setlk(state, F_SETLK, request, 0); |
3504 | if (err != -NFS4ERR_DELAY) | |
3505 | break; | |
3506 | nfs4_handle_exception(server, err, &exception); | |
3507 | } while (exception.retry); | |
3508 | return err; | |
1da177e4 LT |
3509 | } |
3510 | ||
3511 | static int _nfs4_proc_setlk(struct nfs4_state *state, int cmd, struct file_lock *request) | |
3512 | { | |
adfa6f98 | 3513 | struct nfs_client *clp = state->owner->so_client; |
01c3b861 | 3514 | unsigned char fl_flags = request->fl_flags; |
1da177e4 LT |
3515 | int status; |
3516 | ||
6bfc93ef | 3517 | /* Is this a delegated open? */ |
6bfc93ef TM |
3518 | status = nfs4_set_lock_state(state, request); |
3519 | if (status != 0) | |
3520 | goto out; | |
01c3b861 TM |
3521 | request->fl_flags |= FL_ACCESS; |
3522 | status = do_vfs_lock(request->fl_file, request); | |
3523 | if (status < 0) | |
3524 | goto out; | |
3525 | down_read(&clp->cl_sem); | |
3526 | if (test_bit(NFS_DELEGATED_STATE, &state->flags)) { | |
3527 | struct nfs_inode *nfsi = NFS_I(state->inode); | |
3528 | /* Yes: cache locks! */ | |
3529 | down_read(&nfsi->rwsem); | |
3530 | /* ...but avoid races with delegation recall... */ | |
3531 | if (test_bit(NFS_DELEGATED_STATE, &state->flags)) { | |
3532 | request->fl_flags = fl_flags & ~FL_SLEEP; | |
3533 | status = do_vfs_lock(request->fl_file, request); | |
3534 | up_read(&nfsi->rwsem); | |
3535 | goto out_unlock; | |
3536 | } | |
3537 | up_read(&nfsi->rwsem); | |
3538 | } | |
6bfc93ef TM |
3539 | status = _nfs4_do_setlk(state, cmd, request, 0); |
3540 | if (status != 0) | |
01c3b861 | 3541 | goto out_unlock; |
6bfc93ef | 3542 | /* Note: we always want to sleep here! */ |
01c3b861 | 3543 | request->fl_flags = fl_flags | FL_SLEEP; |
6bfc93ef | 3544 | if (do_vfs_lock(request->fl_file, request) < 0) |
3110ff80 | 3545 | printk(KERN_WARNING "%s: VFS is out of sync with lock manager!\n", __func__); |
01c3b861 | 3546 | out_unlock: |
1da177e4 | 3547 | up_read(&clp->cl_sem); |
01c3b861 TM |
3548 | out: |
3549 | request->fl_flags = fl_flags; | |
1da177e4 LT |
3550 | return status; |
3551 | } | |
3552 | ||
3553 | static int nfs4_proc_setlk(struct nfs4_state *state, int cmd, struct file_lock *request) | |
3554 | { | |
3555 | struct nfs4_exception exception = { }; | |
3556 | int err; | |
3557 | ||
3558 | do { | |
3559 | err = nfs4_handle_exception(NFS_SERVER(state->inode), | |
3560 | _nfs4_proc_setlk(state, cmd, request), | |
3561 | &exception); | |
3562 | } while (exception.retry); | |
3563 | return err; | |
3564 | } | |
3565 | ||
3566 | static int | |
3567 | nfs4_proc_lock(struct file *filp, int cmd, struct file_lock *request) | |
3568 | { | |
3569 | struct nfs_open_context *ctx; | |
3570 | struct nfs4_state *state; | |
3571 | unsigned long timeout = NFS4_LOCK_MINTIMEOUT; | |
3572 | int status; | |
3573 | ||
3574 | /* verify open state */ | |
cd3758e3 | 3575 | ctx = nfs_file_open_context(filp); |
1da177e4 LT |
3576 | state = ctx->state; |
3577 | ||
3578 | if (request->fl_start < 0 || request->fl_end < 0) | |
3579 | return -EINVAL; | |
3580 | ||
3581 | if (IS_GETLK(cmd)) | |
3582 | return nfs4_proc_getlk(state, F_GETLK, request); | |
3583 | ||
3584 | if (!(IS_SETLK(cmd) || IS_SETLKW(cmd))) | |
3585 | return -EINVAL; | |
3586 | ||
3587 | if (request->fl_type == F_UNLCK) | |
3588 | return nfs4_proc_unlck(state, cmd, request); | |
3589 | ||
3590 | do { | |
3591 | status = nfs4_proc_setlk(state, cmd, request); | |
3592 | if ((status != -EAGAIN) || IS_SETLK(cmd)) | |
3593 | break; | |
3594 | timeout = nfs4_set_lock_task_retry(timeout); | |
3595 | status = -ERESTARTSYS; | |
3596 | if (signalled()) | |
3597 | break; | |
3598 | } while(status < 0); | |
1da177e4 LT |
3599 | return status; |
3600 | } | |
3601 | ||
888e694c TM |
3602 | int nfs4_lock_delegation_recall(struct nfs4_state *state, struct file_lock *fl) |
3603 | { | |
3604 | struct nfs_server *server = NFS_SERVER(state->inode); | |
3605 | struct nfs4_exception exception = { }; | |
3606 | int err; | |
3607 | ||
3608 | err = nfs4_set_lock_state(state, fl); | |
3609 | if (err != 0) | |
3610 | goto out; | |
3611 | do { | |
3612 | err = _nfs4_do_setlk(state, F_SETLK, fl, 0); | |
3613 | if (err != -NFS4ERR_DELAY) | |
3614 | break; | |
3615 | err = nfs4_handle_exception(server, err, &exception); | |
3616 | } while (exception.retry); | |
3617 | out: | |
3618 | return err; | |
3619 | } | |
6b3b5496 | 3620 | |
aa1870af BF |
3621 | #define XATTR_NAME_NFSV4_ACL "system.nfs4_acl" |
3622 | ||
6b3b5496 BF |
3623 | int nfs4_setxattr(struct dentry *dentry, const char *key, const void *buf, |
3624 | size_t buflen, int flags) | |
3625 | { | |
4b580ee3 BF |
3626 | struct inode *inode = dentry->d_inode; |
3627 | ||
3628 | if (strcmp(key, XATTR_NAME_NFSV4_ACL) != 0) | |
3629 | return -EOPNOTSUPP; | |
3630 | ||
4b580ee3 | 3631 | return nfs4_proc_set_acl(inode, buf, buflen); |
6b3b5496 BF |
3632 | } |
3633 | ||
3634 | /* The getxattr man page suggests returning -ENODATA for unknown attributes, | |
3635 | * and that's what we'll do for e.g. user attributes that haven't been set. | |
3636 | * But we'll follow ext2/ext3's lead by returning -EOPNOTSUPP for unsupported | |
3637 | * attributes in kernel-managed attribute namespaces. */ | |
3638 | ssize_t nfs4_getxattr(struct dentry *dentry, const char *key, void *buf, | |
3639 | size_t buflen) | |
3640 | { | |
aa1870af BF |
3641 | struct inode *inode = dentry->d_inode; |
3642 | ||
3643 | if (strcmp(key, XATTR_NAME_NFSV4_ACL) != 0) | |
3644 | return -EOPNOTSUPP; | |
3645 | ||
3646 | return nfs4_proc_get_acl(inode, buf, buflen); | |
6b3b5496 BF |
3647 | } |
3648 | ||
3649 | ssize_t nfs4_listxattr(struct dentry *dentry, char *buf, size_t buflen) | |
3650 | { | |
aa1870af | 3651 | size_t len = strlen(XATTR_NAME_NFSV4_ACL) + 1; |
6b3b5496 | 3652 | |
096455a2 BF |
3653 | if (!nfs4_server_supports_acls(NFS_SERVER(dentry->d_inode))) |
3654 | return 0; | |
6b3b5496 BF |
3655 | if (buf && buflen < len) |
3656 | return -ERANGE; | |
3657 | if (buf) | |
aa1870af BF |
3658 | memcpy(buf, XATTR_NAME_NFSV4_ACL, len); |
3659 | return len; | |
6b3b5496 BF |
3660 | } |
3661 | ||
56659e99 | 3662 | int nfs4_proc_fs_locations(struct inode *dir, const struct qstr *name, |
7aaa0b3b | 3663 | struct nfs4_fs_locations *fs_locations, struct page *page) |
683b57b4 TM |
3664 | { |
3665 | struct nfs_server *server = NFS_SERVER(dir); | |
3666 | u32 bitmask[2] = { | |
361e624f MN |
3667 | [0] = FATTR4_WORD0_FSID | FATTR4_WORD0_FS_LOCATIONS, |
3668 | [1] = FATTR4_WORD1_MOUNTED_ON_FILEID, | |
683b57b4 TM |
3669 | }; |
3670 | struct nfs4_fs_locations_arg args = { | |
3671 | .dir_fh = NFS_FH(dir), | |
c228fd3a | 3672 | .name = name, |
683b57b4 TM |
3673 | .page = page, |
3674 | .bitmask = bitmask, | |
3675 | }; | |
3676 | struct rpc_message msg = { | |
3677 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_FS_LOCATIONS], | |
3678 | .rpc_argp = &args, | |
7aaa0b3b | 3679 | .rpc_resp = fs_locations, |
683b57b4 TM |
3680 | }; |
3681 | int status; | |
3682 | ||
3110ff80 | 3683 | dprintk("%s: start\n", __func__); |
c228fd3a | 3684 | nfs_fattr_init(&fs_locations->fattr); |
683b57b4 | 3685 | fs_locations->server = server; |
830b8e33 | 3686 | fs_locations->nlocations = 0; |
683b57b4 | 3687 | status = rpc_call_sync(server->client, &msg, 0); |
3110ff80 | 3688 | dprintk("%s: returned status = %d\n", __func__, status); |
683b57b4 TM |
3689 | return status; |
3690 | } | |
3691 | ||
1da177e4 LT |
3692 | struct nfs4_state_recovery_ops nfs4_reboot_recovery_ops = { |
3693 | .recover_open = nfs4_open_reclaim, | |
3694 | .recover_lock = nfs4_lock_reclaim, | |
3695 | }; | |
3696 | ||
3697 | struct nfs4_state_recovery_ops nfs4_network_partition_recovery_ops = { | |
3698 | .recover_open = nfs4_open_expired, | |
3699 | .recover_lock = nfs4_lock_expired, | |
3700 | }; | |
3701 | ||
92e1d5be | 3702 | static const struct inode_operations nfs4_file_inode_operations = { |
6b3b5496 BF |
3703 | .permission = nfs_permission, |
3704 | .getattr = nfs_getattr, | |
3705 | .setattr = nfs_setattr, | |
3706 | .getxattr = nfs4_getxattr, | |
3707 | .setxattr = nfs4_setxattr, | |
3708 | .listxattr = nfs4_listxattr, | |
3709 | }; | |
3710 | ||
509de811 | 3711 | const struct nfs_rpc_ops nfs_v4_clientops = { |
1da177e4 LT |
3712 | .version = 4, /* protocol version */ |
3713 | .dentry_ops = &nfs4_dentry_operations, | |
3714 | .dir_inode_ops = &nfs4_dir_inode_operations, | |
6b3b5496 | 3715 | .file_inode_ops = &nfs4_file_inode_operations, |
1da177e4 LT |
3716 | .getroot = nfs4_proc_get_root, |
3717 | .getattr = nfs4_proc_getattr, | |
3718 | .setattr = nfs4_proc_setattr, | |
2b3de441 | 3719 | .lookupfh = nfs4_proc_lookupfh, |
1da177e4 LT |
3720 | .lookup = nfs4_proc_lookup, |
3721 | .access = nfs4_proc_access, | |
3722 | .readlink = nfs4_proc_readlink, | |
1da177e4 LT |
3723 | .create = nfs4_proc_create, |
3724 | .remove = nfs4_proc_remove, | |
3725 | .unlink_setup = nfs4_proc_unlink_setup, | |
3726 | .unlink_done = nfs4_proc_unlink_done, | |
3727 | .rename = nfs4_proc_rename, | |
3728 | .link = nfs4_proc_link, | |
3729 | .symlink = nfs4_proc_symlink, | |
3730 | .mkdir = nfs4_proc_mkdir, | |
3731 | .rmdir = nfs4_proc_remove, | |
3732 | .readdir = nfs4_proc_readdir, | |
3733 | .mknod = nfs4_proc_mknod, | |
3734 | .statfs = nfs4_proc_statfs, | |
3735 | .fsinfo = nfs4_proc_fsinfo, | |
3736 | .pathconf = nfs4_proc_pathconf, | |
e9326dca | 3737 | .set_capabilities = nfs4_server_capabilities, |
1da177e4 LT |
3738 | .decode_dirent = nfs4_decode_dirent, |
3739 | .read_setup = nfs4_proc_read_setup, | |
ec06c096 | 3740 | .read_done = nfs4_read_done, |
1da177e4 | 3741 | .write_setup = nfs4_proc_write_setup, |
788e7a89 | 3742 | .write_done = nfs4_write_done, |
1da177e4 | 3743 | .commit_setup = nfs4_proc_commit_setup, |
788e7a89 | 3744 | .commit_done = nfs4_commit_done, |
1da177e4 | 3745 | .lock = nfs4_proc_lock, |
e50a1c2e | 3746 | .clear_acl_cache = nfs4_zap_acl_attr, |
1da177e4 LT |
3747 | }; |
3748 | ||
3749 | /* | |
3750 | * Local variables: | |
3751 | * c-basic-offset: 8 | |
3752 | * End: | |
3753 | */ |