Commit | Line | Data |
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1da177e4 LT |
1 | /* |
2 | * fs/nfs/nfs4proc.c | |
3 | * | |
4 | * Client-side procedure declarations for NFSv4. | |
5 | * | |
6 | * Copyright (c) 2002 The Regents of the University of Michigan. | |
7 | * All rights reserved. | |
8 | * | |
9 | * Kendrick Smith <kmsmith@umich.edu> | |
10 | * Andy Adamson <andros@umich.edu> | |
11 | * | |
12 | * Redistribution and use in source and binary forms, with or without | |
13 | * modification, are permitted provided that the following conditions | |
14 | * are met: | |
15 | * | |
16 | * 1. Redistributions of source code must retain the above copyright | |
17 | * notice, this list of conditions and the following disclaimer. | |
18 | * 2. Redistributions in binary form must reproduce the above copyright | |
19 | * notice, this list of conditions and the following disclaimer in the | |
20 | * documentation and/or other materials provided with the distribution. | |
21 | * 3. Neither the name of the University nor the names of its | |
22 | * contributors may be used to endorse or promote products derived | |
23 | * from this software without specific prior written permission. | |
24 | * | |
25 | * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED | |
26 | * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF | |
27 | * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE | |
28 | * DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE | |
29 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR | |
30 | * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF | |
31 | * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR | |
32 | * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF | |
33 | * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING | |
34 | * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS | |
35 | * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |
36 | */ | |
37 | ||
38 | #include <linux/mm.h> | |
39 | #include <linux/utsname.h> | |
40 | #include <linux/delay.h> | |
41 | #include <linux/errno.h> | |
42 | #include <linux/string.h> | |
43 | #include <linux/sunrpc/clnt.h> | |
44 | #include <linux/nfs.h> | |
45 | #include <linux/nfs4.h> | |
46 | #include <linux/nfs_fs.h> | |
47 | #include <linux/nfs_page.h> | |
48 | #include <linux/smp_lock.h> | |
49 | #include <linux/namei.h> | |
02a913a7 | 50 | #include <linux/mount.h> |
1da177e4 | 51 | |
4ce79717 | 52 | #include "nfs4_fs.h" |
1da177e4 | 53 | #include "delegation.h" |
006ea73e | 54 | #include "iostat.h" |
1da177e4 LT |
55 | |
56 | #define NFSDBG_FACILITY NFSDBG_PROC | |
57 | ||
2066fe89 | 58 | #define NFS4_POLL_RETRY_MIN (HZ/10) |
1da177e4 LT |
59 | #define NFS4_POLL_RETRY_MAX (15*HZ) |
60 | ||
cdd4e68b | 61 | struct nfs4_opendata; |
864472e9 | 62 | static int _nfs4_proc_open(struct nfs4_opendata *data); |
1da177e4 | 63 | static int nfs4_do_fsinfo(struct nfs_server *, struct nfs_fh *, struct nfs_fsinfo *); |
faf5f49c | 64 | static int nfs4_async_handle_error(struct rpc_task *, const struct nfs_server *); |
1da177e4 | 65 | static int _nfs4_proc_access(struct inode *inode, struct nfs_access_entry *entry); |
faf5f49c | 66 | static int nfs4_handle_exception(const struct nfs_server *server, int errorcode, struct nfs4_exception *exception); |
adfa6f98 | 67 | static int nfs4_wait_clnt_recover(struct rpc_clnt *clnt, struct nfs_client *clp); |
aac00a8d | 68 | static int _nfs4_do_access(struct inode *inode, struct rpc_cred *cred, int openflags); |
9936781d TM |
69 | static int _nfs4_proc_lookup(struct inode *dir, const struct qstr *name, struct nfs_fh *fhandle, struct nfs_fattr *fattr); |
70 | static int _nfs4_proc_getattr(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fattr *fattr); | |
1da177e4 | 71 | |
1da177e4 LT |
72 | /* Prevent leaks of NFSv4 errors into userland */ |
73 | int nfs4_map_errors(int err) | |
74 | { | |
75 | if (err < -1000) { | |
76 | dprintk("%s could not handle NFSv4 error %d\n", | |
77 | __FUNCTION__, -err); | |
78 | return -EIO; | |
79 | } | |
80 | return err; | |
81 | } | |
82 | ||
83 | /* | |
84 | * This is our standard bitmap for GETATTR requests. | |
85 | */ | |
86 | const u32 nfs4_fattr_bitmap[2] = { | |
87 | FATTR4_WORD0_TYPE | |
88 | | FATTR4_WORD0_CHANGE | |
89 | | FATTR4_WORD0_SIZE | |
90 | | FATTR4_WORD0_FSID | |
91 | | FATTR4_WORD0_FILEID, | |
92 | FATTR4_WORD1_MODE | |
93 | | FATTR4_WORD1_NUMLINKS | |
94 | | FATTR4_WORD1_OWNER | |
95 | | FATTR4_WORD1_OWNER_GROUP | |
96 | | FATTR4_WORD1_RAWDEV | |
97 | | FATTR4_WORD1_SPACE_USED | |
98 | | FATTR4_WORD1_TIME_ACCESS | |
99 | | FATTR4_WORD1_TIME_METADATA | |
100 | | FATTR4_WORD1_TIME_MODIFY | |
101 | }; | |
102 | ||
103 | const u32 nfs4_statfs_bitmap[2] = { | |
104 | FATTR4_WORD0_FILES_AVAIL | |
105 | | FATTR4_WORD0_FILES_FREE | |
106 | | FATTR4_WORD0_FILES_TOTAL, | |
107 | FATTR4_WORD1_SPACE_AVAIL | |
108 | | FATTR4_WORD1_SPACE_FREE | |
109 | | FATTR4_WORD1_SPACE_TOTAL | |
110 | }; | |
111 | ||
4ce79717 | 112 | const u32 nfs4_pathconf_bitmap[2] = { |
1da177e4 LT |
113 | FATTR4_WORD0_MAXLINK |
114 | | FATTR4_WORD0_MAXNAME, | |
115 | 0 | |
116 | }; | |
117 | ||
118 | const u32 nfs4_fsinfo_bitmap[2] = { FATTR4_WORD0_MAXFILESIZE | |
119 | | FATTR4_WORD0_MAXREAD | |
120 | | FATTR4_WORD0_MAXWRITE | |
121 | | FATTR4_WORD0_LEASE_TIME, | |
122 | 0 | |
123 | }; | |
124 | ||
830b8e33 MN |
125 | const u32 nfs4_fs_locations_bitmap[2] = { |
126 | FATTR4_WORD0_TYPE | |
127 | | FATTR4_WORD0_CHANGE | |
128 | | FATTR4_WORD0_SIZE | |
129 | | FATTR4_WORD0_FSID | |
130 | | FATTR4_WORD0_FILEID | |
131 | | FATTR4_WORD0_FS_LOCATIONS, | |
132 | FATTR4_WORD1_MODE | |
133 | | FATTR4_WORD1_NUMLINKS | |
134 | | FATTR4_WORD1_OWNER | |
135 | | FATTR4_WORD1_OWNER_GROUP | |
136 | | FATTR4_WORD1_RAWDEV | |
137 | | FATTR4_WORD1_SPACE_USED | |
138 | | FATTR4_WORD1_TIME_ACCESS | |
139 | | FATTR4_WORD1_TIME_METADATA | |
140 | | FATTR4_WORD1_TIME_MODIFY | |
141 | | FATTR4_WORD1_MOUNTED_ON_FILEID | |
142 | }; | |
143 | ||
bc4785cd | 144 | static void nfs4_setup_readdir(u64 cookie, __be32 *verifier, struct dentry *dentry, |
1da177e4 LT |
145 | struct nfs4_readdir_arg *readdir) |
146 | { | |
0dbb4c67 | 147 | __be32 *start, *p; |
1da177e4 LT |
148 | |
149 | BUG_ON(readdir->count < 80); | |
150 | if (cookie > 2) { | |
b7ef1956 | 151 | readdir->cookie = cookie; |
1da177e4 LT |
152 | memcpy(&readdir->verifier, verifier, sizeof(readdir->verifier)); |
153 | return; | |
154 | } | |
155 | ||
156 | readdir->cookie = 0; | |
157 | memset(&readdir->verifier, 0, sizeof(readdir->verifier)); | |
158 | if (cookie == 2) | |
159 | return; | |
160 | ||
161 | /* | |
162 | * NFSv4 servers do not return entries for '.' and '..' | |
163 | * Therefore, we fake these entries here. We let '.' | |
164 | * have cookie 0 and '..' have cookie 1. Note that | |
165 | * when talking to the server, we always send cookie 0 | |
166 | * instead of 1 or 2. | |
167 | */ | |
0dbb4c67 | 168 | start = p = kmap_atomic(*readdir->pages, KM_USER0); |
1da177e4 LT |
169 | |
170 | if (cookie == 0) { | |
171 | *p++ = xdr_one; /* next */ | |
172 | *p++ = xdr_zero; /* cookie, first word */ | |
173 | *p++ = xdr_one; /* cookie, second word */ | |
174 | *p++ = xdr_one; /* entry len */ | |
175 | memcpy(p, ".\0\0\0", 4); /* entry */ | |
176 | p++; | |
177 | *p++ = xdr_one; /* bitmap length */ | |
178 | *p++ = htonl(FATTR4_WORD0_FILEID); /* bitmap */ | |
179 | *p++ = htonl(8); /* attribute buffer length */ | |
180 | p = xdr_encode_hyper(p, dentry->d_inode->i_ino); | |
181 | } | |
182 | ||
183 | *p++ = xdr_one; /* next */ | |
184 | *p++ = xdr_zero; /* cookie, first word */ | |
185 | *p++ = xdr_two; /* cookie, second word */ | |
186 | *p++ = xdr_two; /* entry len */ | |
187 | memcpy(p, "..\0\0", 4); /* entry */ | |
188 | p++; | |
189 | *p++ = xdr_one; /* bitmap length */ | |
190 | *p++ = htonl(FATTR4_WORD0_FILEID); /* bitmap */ | |
191 | *p++ = htonl(8); /* attribute buffer length */ | |
192 | p = xdr_encode_hyper(p, dentry->d_parent->d_inode->i_ino); | |
193 | ||
194 | readdir->pgbase = (char *)p - (char *)start; | |
195 | readdir->count -= readdir->pgbase; | |
196 | kunmap_atomic(start, KM_USER0); | |
197 | } | |
198 | ||
26e976a8 | 199 | static void renew_lease(const struct nfs_server *server, unsigned long timestamp) |
1da177e4 | 200 | { |
7539bbab | 201 | struct nfs_client *clp = server->nfs_client; |
1da177e4 LT |
202 | spin_lock(&clp->cl_lock); |
203 | if (time_before(clp->cl_last_renewal,timestamp)) | |
204 | clp->cl_last_renewal = timestamp; | |
205 | spin_unlock(&clp->cl_lock); | |
206 | } | |
207 | ||
38478b24 | 208 | static void update_changeattr(struct inode *dir, struct nfs4_change_info *cinfo) |
1da177e4 | 209 | { |
38478b24 | 210 | struct nfs_inode *nfsi = NFS_I(dir); |
1da177e4 | 211 | |
38478b24 TM |
212 | spin_lock(&dir->i_lock); |
213 | nfsi->cache_validity |= NFS_INO_INVALID_ATTR|NFS_INO_REVAL_PAGECACHE|NFS_INO_INVALID_DATA; | |
1da177e4 LT |
214 | if (cinfo->before == nfsi->change_attr && cinfo->atomic) |
215 | nfsi->change_attr = cinfo->after; | |
38478b24 | 216 | spin_unlock(&dir->i_lock); |
1da177e4 LT |
217 | } |
218 | ||
e56e0b78 | 219 | struct nfs4_opendata { |
c6d00e63 | 220 | struct kref kref; |
e56e0b78 TM |
221 | struct nfs_openargs o_arg; |
222 | struct nfs_openres o_res; | |
cdd4e68b TM |
223 | struct nfs_open_confirmargs c_arg; |
224 | struct nfs_open_confirmres c_res; | |
e56e0b78 TM |
225 | struct nfs_fattr f_attr; |
226 | struct nfs_fattr dir_attr; | |
ad389da7 | 227 | struct path path; |
e56e0b78 TM |
228 | struct dentry *dir; |
229 | struct nfs4_state_owner *owner; | |
aac00a8d | 230 | struct nfs4_state *state; |
e56e0b78 | 231 | struct iattr attrs; |
26e976a8 | 232 | unsigned long timestamp; |
3e309914 | 233 | unsigned int rpc_done : 1; |
24ac23ab TM |
234 | int rpc_status; |
235 | int cancelled; | |
e56e0b78 TM |
236 | }; |
237 | ||
2ced46c2 TM |
238 | |
239 | static void nfs4_init_opendata_res(struct nfs4_opendata *p) | |
240 | { | |
241 | p->o_res.f_attr = &p->f_attr; | |
242 | p->o_res.dir_attr = &p->dir_attr; | |
243 | p->o_res.server = p->o_arg.server; | |
244 | nfs_fattr_init(&p->f_attr); | |
245 | nfs_fattr_init(&p->dir_attr); | |
246 | } | |
247 | ||
ad389da7 | 248 | static struct nfs4_opendata *nfs4_opendata_alloc(struct path *path, |
e56e0b78 TM |
249 | struct nfs4_state_owner *sp, int flags, |
250 | const struct iattr *attrs) | |
251 | { | |
ad389da7 | 252 | struct dentry *parent = dget_parent(path->dentry); |
e56e0b78 TM |
253 | struct inode *dir = parent->d_inode; |
254 | struct nfs_server *server = NFS_SERVER(dir); | |
255 | struct nfs4_opendata *p; | |
256 | ||
257 | p = kzalloc(sizeof(*p), GFP_KERNEL); | |
258 | if (p == NULL) | |
259 | goto err; | |
260 | p->o_arg.seqid = nfs_alloc_seqid(&sp->so_seqid); | |
261 | if (p->o_arg.seqid == NULL) | |
262 | goto err_free; | |
ad389da7 TM |
263 | p->path.mnt = mntget(path->mnt); |
264 | p->path.dentry = dget(path->dentry); | |
e56e0b78 TM |
265 | p->dir = parent; |
266 | p->owner = sp; | |
267 | atomic_inc(&sp->so_count); | |
268 | p->o_arg.fh = NFS_FH(dir); | |
269 | p->o_arg.open_flags = flags, | |
7539bbab | 270 | p->o_arg.clientid = server->nfs_client->cl_clientid; |
9f958ab8 | 271 | p->o_arg.id = sp->so_owner_id.id; |
ad389da7 | 272 | p->o_arg.name = &p->path.dentry->d_name; |
e56e0b78 TM |
273 | p->o_arg.server = server; |
274 | p->o_arg.bitmask = server->attr_bitmask; | |
275 | p->o_arg.claim = NFS4_OPEN_CLAIM_NULL; | |
e56e0b78 TM |
276 | if (flags & O_EXCL) { |
277 | u32 *s = (u32 *) p->o_arg.u.verifier.data; | |
278 | s[0] = jiffies; | |
279 | s[1] = current->pid; | |
280 | } else if (flags & O_CREAT) { | |
281 | p->o_arg.u.attrs = &p->attrs; | |
282 | memcpy(&p->attrs, attrs, sizeof(p->attrs)); | |
283 | } | |
cdd4e68b TM |
284 | p->c_arg.fh = &p->o_res.fh; |
285 | p->c_arg.stateid = &p->o_res.stateid; | |
286 | p->c_arg.seqid = p->o_arg.seqid; | |
2ced46c2 | 287 | nfs4_init_opendata_res(p); |
c6d00e63 | 288 | kref_init(&p->kref); |
e56e0b78 TM |
289 | return p; |
290 | err_free: | |
291 | kfree(p); | |
292 | err: | |
293 | dput(parent); | |
294 | return NULL; | |
295 | } | |
296 | ||
c6d00e63 | 297 | static void nfs4_opendata_free(struct kref *kref) |
e56e0b78 | 298 | { |
c6d00e63 TM |
299 | struct nfs4_opendata *p = container_of(kref, |
300 | struct nfs4_opendata, kref); | |
301 | ||
302 | nfs_free_seqid(p->o_arg.seqid); | |
aac00a8d TM |
303 | if (p->state != NULL) |
304 | nfs4_put_open_state(p->state); | |
c6d00e63 TM |
305 | nfs4_put_state_owner(p->owner); |
306 | dput(p->dir); | |
307 | dput(p->path.dentry); | |
308 | mntput(p->path.mnt); | |
309 | kfree(p); | |
310 | } | |
311 | ||
312 | static void nfs4_opendata_put(struct nfs4_opendata *p) | |
313 | { | |
314 | if (p != NULL) | |
315 | kref_put(&p->kref, nfs4_opendata_free); | |
e56e0b78 TM |
316 | } |
317 | ||
06f814a3 TM |
318 | static int nfs4_wait_for_completion_rpc_task(struct rpc_task *task) |
319 | { | |
320 | sigset_t oldset; | |
321 | int ret; | |
322 | ||
323 | rpc_clnt_sigmask(task->tk_client, &oldset); | |
324 | ret = rpc_wait_for_completion_task(task); | |
325 | rpc_clnt_sigunmask(task->tk_client, &oldset); | |
326 | return ret; | |
327 | } | |
328 | ||
6ee41268 TM |
329 | static int can_open_cached(struct nfs4_state *state, int mode) |
330 | { | |
331 | int ret = 0; | |
332 | switch (mode & (FMODE_READ|FMODE_WRITE|O_EXCL)) { | |
333 | case FMODE_READ: | |
334 | ret |= test_bit(NFS_O_RDONLY_STATE, &state->flags) != 0; | |
335 | ret |= test_bit(NFS_O_RDWR_STATE, &state->flags) != 0; | |
336 | break; | |
337 | case FMODE_WRITE: | |
338 | ret |= test_bit(NFS_O_WRONLY_STATE, &state->flags) != 0; | |
339 | ret |= test_bit(NFS_O_RDWR_STATE, &state->flags) != 0; | |
340 | break; | |
341 | case FMODE_READ|FMODE_WRITE: | |
342 | ret |= test_bit(NFS_O_RDWR_STATE, &state->flags) != 0; | |
343 | } | |
344 | return ret; | |
345 | } | |
346 | ||
aac00a8d TM |
347 | static int can_open_delegated(struct nfs_delegation *delegation, mode_t open_flags) |
348 | { | |
349 | if ((delegation->type & open_flags) != open_flags) | |
350 | return 0; | |
351 | if (delegation->flags & NFS_DELEGATION_NEED_RECLAIM) | |
352 | return 0; | |
353 | return 1; | |
354 | } | |
355 | ||
003707c7 | 356 | static void update_open_stateflags(struct nfs4_state *state, mode_t open_flags) |
e7616923 TM |
357 | { |
358 | switch (open_flags) { | |
359 | case FMODE_WRITE: | |
360 | state->n_wronly++; | |
361 | break; | |
362 | case FMODE_READ: | |
363 | state->n_rdonly++; | |
364 | break; | |
365 | case FMODE_READ|FMODE_WRITE: | |
366 | state->n_rdwr++; | |
367 | } | |
003707c7 TM |
368 | nfs4_state_set_mode_locked(state, state->state | open_flags); |
369 | } | |
370 | ||
371 | static void nfs_set_open_stateid_locked(struct nfs4_state *state, nfs4_stateid *stateid, int open_flags) | |
372 | { | |
373 | if (test_bit(NFS_DELEGATED_STATE, &state->flags) == 0) | |
374 | memcpy(state->stateid.data, stateid->data, sizeof(state->stateid.data)); | |
375 | memcpy(state->open_stateid.data, stateid->data, sizeof(state->open_stateid.data)); | |
376 | switch (open_flags) { | |
377 | case FMODE_READ: | |
378 | set_bit(NFS_O_RDONLY_STATE, &state->flags); | |
379 | break; | |
380 | case FMODE_WRITE: | |
381 | set_bit(NFS_O_WRONLY_STATE, &state->flags); | |
382 | break; | |
383 | case FMODE_READ|FMODE_WRITE: | |
384 | set_bit(NFS_O_RDWR_STATE, &state->flags); | |
385 | } | |
e7616923 TM |
386 | } |
387 | ||
003707c7 TM |
388 | static void nfs_set_open_stateid(struct nfs4_state *state, nfs4_stateid *stateid, int open_flags) |
389 | { | |
8bda4e4c | 390 | write_seqlock(&state->seqlock); |
003707c7 | 391 | nfs_set_open_stateid_locked(state, stateid, open_flags); |
8bda4e4c | 392 | write_sequnlock(&state->seqlock); |
003707c7 TM |
393 | } |
394 | ||
395 | static void update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stateid, nfs4_stateid *deleg_stateid, int open_flags) | |
1da177e4 | 396 | { |
1da177e4 | 397 | open_flags &= (FMODE_READ|FMODE_WRITE); |
8bda4e4c TM |
398 | /* |
399 | * Protect the call to nfs4_state_set_mode_locked and | |
400 | * serialise the stateid update | |
401 | */ | |
402 | write_seqlock(&state->seqlock); | |
003707c7 TM |
403 | if (deleg_stateid != NULL) { |
404 | memcpy(state->stateid.data, deleg_stateid->data, sizeof(state->stateid.data)); | |
405 | set_bit(NFS_DELEGATED_STATE, &state->flags); | |
406 | } | |
407 | if (open_stateid != NULL) | |
408 | nfs_set_open_stateid_locked(state, open_stateid, open_flags); | |
8bda4e4c TM |
409 | write_sequnlock(&state->seqlock); |
410 | spin_lock(&state->owner->so_lock); | |
e7616923 | 411 | update_open_stateflags(state, open_flags); |
ec073428 | 412 | spin_unlock(&state->owner->so_lock); |
1da177e4 LT |
413 | } |
414 | ||
aac00a8d TM |
415 | static void nfs4_return_incompatible_delegation(struct inode *inode, mode_t open_flags) |
416 | { | |
417 | struct nfs_delegation *delegation; | |
418 | ||
419 | rcu_read_lock(); | |
420 | delegation = rcu_dereference(NFS_I(inode)->delegation); | |
421 | if (delegation == NULL || (delegation->type & open_flags) == open_flags) { | |
422 | rcu_read_unlock(); | |
423 | return; | |
424 | } | |
425 | rcu_read_unlock(); | |
426 | nfs_inode_return_delegation(inode); | |
427 | } | |
428 | ||
6ee41268 | 429 | static struct nfs4_state *nfs4_try_open_cached(struct nfs4_opendata *opendata) |
aac00a8d TM |
430 | { |
431 | struct nfs4_state *state = opendata->state; | |
432 | struct nfs_inode *nfsi = NFS_I(state->inode); | |
433 | struct nfs_delegation *delegation; | |
434 | int open_mode = opendata->o_arg.open_flags & (FMODE_READ|FMODE_WRITE|O_EXCL); | |
435 | nfs4_stateid stateid; | |
436 | int ret = -EAGAIN; | |
437 | ||
438 | rcu_read_lock(); | |
439 | delegation = rcu_dereference(nfsi->delegation); | |
aac00a8d | 440 | for (;;) { |
6ee41268 TM |
441 | if (can_open_cached(state, open_mode)) { |
442 | spin_lock(&state->owner->so_lock); | |
443 | if (can_open_cached(state, open_mode)) { | |
444 | update_open_stateflags(state, open_mode); | |
445 | spin_unlock(&state->owner->so_lock); | |
446 | rcu_read_unlock(); | |
447 | goto out_return_state; | |
448 | } | |
449 | spin_unlock(&state->owner->so_lock); | |
450 | } | |
451 | if (delegation == NULL) | |
452 | break; | |
aac00a8d TM |
453 | if (!can_open_delegated(delegation, open_mode)) |
454 | break; | |
455 | /* Save the delegation */ | |
456 | memcpy(stateid.data, delegation->stateid.data, sizeof(stateid.data)); | |
457 | rcu_read_unlock(); | |
458 | lock_kernel(); | |
459 | ret = _nfs4_do_access(state->inode, state->owner->so_cred, open_mode); | |
460 | unlock_kernel(); | |
461 | if (ret != 0) | |
462 | goto out; | |
463 | ret = -EAGAIN; | |
464 | rcu_read_lock(); | |
465 | delegation = rcu_dereference(nfsi->delegation); | |
6ee41268 | 466 | /* If no delegation, try a cached open */ |
aac00a8d | 467 | if (delegation == NULL) |
6ee41268 | 468 | continue; |
aac00a8d TM |
469 | /* Is the delegation still valid? */ |
470 | if (memcmp(stateid.data, delegation->stateid.data, sizeof(stateid.data)) != 0) | |
471 | continue; | |
472 | rcu_read_unlock(); | |
473 | update_open_stateid(state, NULL, &stateid, open_mode); | |
474 | goto out_return_state; | |
475 | } | |
aac00a8d TM |
476 | rcu_read_unlock(); |
477 | out: | |
478 | return ERR_PTR(ret); | |
479 | out_return_state: | |
480 | atomic_inc(&state->count); | |
481 | return state; | |
482 | } | |
483 | ||
24ac23ab TM |
484 | static struct nfs4_state *nfs4_opendata_to_nfs4_state(struct nfs4_opendata *data) |
485 | { | |
486 | struct inode *inode; | |
487 | struct nfs4_state *state = NULL; | |
003707c7 TM |
488 | struct nfs_delegation *delegation; |
489 | nfs4_stateid *deleg_stateid = NULL; | |
1b370bc2 | 490 | int ret; |
24ac23ab | 491 | |
aac00a8d | 492 | if (!data->rpc_done) { |
6ee41268 | 493 | state = nfs4_try_open_cached(data); |
aac00a8d TM |
494 | goto out; |
495 | } | |
496 | ||
1b370bc2 | 497 | ret = -EAGAIN; |
24ac23ab | 498 | if (!(data->f_attr.valid & NFS_ATTR_FATTR)) |
1b370bc2 | 499 | goto err; |
24ac23ab | 500 | inode = nfs_fhget(data->dir->d_sb, &data->o_res.fh, &data->f_attr); |
1b370bc2 | 501 | ret = PTR_ERR(inode); |
03f28e3a | 502 | if (IS_ERR(inode)) |
1b370bc2 TM |
503 | goto err; |
504 | ret = -ENOMEM; | |
24ac23ab TM |
505 | state = nfs4_get_open_state(inode, data->owner); |
506 | if (state == NULL) | |
1b370bc2 | 507 | goto err_put_inode; |
549d6ed5 | 508 | if (data->o_res.delegation_type != 0) { |
549d6ed5 TM |
509 | int delegation_flags = 0; |
510 | ||
003707c7 TM |
511 | rcu_read_lock(); |
512 | delegation = rcu_dereference(NFS_I(inode)->delegation); | |
513 | if (delegation) | |
514 | delegation_flags = delegation->flags; | |
515 | rcu_read_unlock(); | |
549d6ed5 TM |
516 | if (!(delegation_flags & NFS_DELEGATION_NEED_RECLAIM)) |
517 | nfs_inode_set_delegation(state->inode, | |
518 | data->owner->so_cred, | |
519 | &data->o_res); | |
520 | else | |
521 | nfs_inode_reclaim_delegation(state->inode, | |
522 | data->owner->so_cred, | |
523 | &data->o_res); | |
524 | } | |
003707c7 TM |
525 | rcu_read_lock(); |
526 | delegation = rcu_dereference(NFS_I(inode)->delegation); | |
527 | if (delegation != NULL) | |
528 | deleg_stateid = &delegation->stateid; | |
529 | update_open_stateid(state, &data->o_res.stateid, deleg_stateid, data->o_arg.open_flags); | |
530 | rcu_read_unlock(); | |
24ac23ab | 531 | iput(inode); |
aac00a8d | 532 | out: |
24ac23ab | 533 | return state; |
1b370bc2 TM |
534 | err_put_inode: |
535 | iput(inode); | |
536 | err: | |
537 | return ERR_PTR(ret); | |
24ac23ab TM |
538 | } |
539 | ||
864472e9 TM |
540 | static struct nfs_open_context *nfs4_state_find_open_context(struct nfs4_state *state) |
541 | { | |
542 | struct nfs_inode *nfsi = NFS_I(state->inode); | |
543 | struct nfs_open_context *ctx; | |
544 | ||
545 | spin_lock(&state->inode->i_lock); | |
546 | list_for_each_entry(ctx, &nfsi->open_files, list) { | |
547 | if (ctx->state != state) | |
548 | continue; | |
549 | get_nfs_open_context(ctx); | |
550 | spin_unlock(&state->inode->i_lock); | |
551 | return ctx; | |
552 | } | |
553 | spin_unlock(&state->inode->i_lock); | |
554 | return ERR_PTR(-ENOENT); | |
555 | } | |
556 | ||
6f220ed5 TM |
557 | static struct nfs4_opendata *nfs4_open_recoverdata_alloc(struct nfs_open_context *ctx, struct nfs4_state *state) |
558 | { | |
559 | struct nfs4_opendata *opendata; | |
560 | ||
561 | opendata = nfs4_opendata_alloc(&ctx->path, state->owner, 0, NULL); | |
562 | if (opendata == NULL) | |
563 | return ERR_PTR(-ENOMEM); | |
564 | opendata->state = state; | |
565 | atomic_inc(&state->count); | |
566 | return opendata; | |
567 | } | |
568 | ||
2ced46c2 | 569 | static int nfs4_open_recover_helper(struct nfs4_opendata *opendata, mode_t openflags, struct nfs4_state **res) |
864472e9 | 570 | { |
2ced46c2 | 571 | struct nfs4_state *newstate; |
864472e9 TM |
572 | int ret; |
573 | ||
574 | opendata->o_arg.open_flags = openflags; | |
2ced46c2 TM |
575 | memset(&opendata->o_res, 0, sizeof(opendata->o_res)); |
576 | memset(&opendata->c_res, 0, sizeof(opendata->c_res)); | |
577 | nfs4_init_opendata_res(opendata); | |
864472e9 TM |
578 | ret = _nfs4_proc_open(opendata); |
579 | if (ret != 0) | |
580 | return ret; | |
2ced46c2 | 581 | newstate = nfs4_opendata_to_nfs4_state(opendata); |
1b370bc2 TM |
582 | if (IS_ERR(newstate)) |
583 | return PTR_ERR(newstate); | |
584 | nfs4_close_state(&opendata->path, newstate, openflags); | |
2ced46c2 | 585 | *res = newstate; |
864472e9 TM |
586 | return 0; |
587 | } | |
588 | ||
589 | static int nfs4_open_recover(struct nfs4_opendata *opendata, struct nfs4_state *state) | |
590 | { | |
864472e9 | 591 | struct nfs4_state *newstate; |
864472e9 TM |
592 | int ret; |
593 | ||
594 | /* memory barrier prior to reading state->n_* */ | |
2ced46c2 | 595 | clear_bit(NFS_DELEGATED_STATE, &state->flags); |
864472e9 TM |
596 | smp_rmb(); |
597 | if (state->n_rdwr != 0) { | |
2ced46c2 | 598 | ret = nfs4_open_recover_helper(opendata, FMODE_READ|FMODE_WRITE, &newstate); |
864472e9 TM |
599 | if (ret != 0) |
600 | return ret; | |
2ced46c2 TM |
601 | if (newstate != state) |
602 | return -ESTALE; | |
864472e9 TM |
603 | } |
604 | if (state->n_wronly != 0) { | |
2ced46c2 | 605 | ret = nfs4_open_recover_helper(opendata, FMODE_WRITE, &newstate); |
864472e9 TM |
606 | if (ret != 0) |
607 | return ret; | |
2ced46c2 TM |
608 | if (newstate != state) |
609 | return -ESTALE; | |
864472e9 TM |
610 | } |
611 | if (state->n_rdonly != 0) { | |
2ced46c2 | 612 | ret = nfs4_open_recover_helper(opendata, FMODE_READ, &newstate); |
864472e9 TM |
613 | if (ret != 0) |
614 | return ret; | |
2ced46c2 TM |
615 | if (newstate != state) |
616 | return -ESTALE; | |
864472e9 | 617 | } |
1ac7e2fd TM |
618 | /* |
619 | * We may have performed cached opens for all three recoveries. | |
620 | * Check if we need to update the current stateid. | |
621 | */ | |
622 | if (test_bit(NFS_DELEGATED_STATE, &state->flags) == 0 && | |
623 | memcmp(state->stateid.data, state->open_stateid.data, sizeof(state->stateid.data)) != 0) { | |
8bda4e4c | 624 | write_seqlock(&state->seqlock); |
1ac7e2fd TM |
625 | if (test_bit(NFS_DELEGATED_STATE, &state->flags) == 0) |
626 | memcpy(state->stateid.data, state->open_stateid.data, sizeof(state->stateid.data)); | |
8bda4e4c | 627 | write_sequnlock(&state->seqlock); |
1ac7e2fd | 628 | } |
864472e9 TM |
629 | return 0; |
630 | } | |
631 | ||
1da177e4 LT |
632 | /* |
633 | * OPEN_RECLAIM: | |
634 | * reclaim state on the server after a reboot. | |
1da177e4 | 635 | */ |
539cd03a | 636 | static int _nfs4_do_open_reclaim(struct nfs_open_context *ctx, struct nfs4_state *state) |
1da177e4 | 637 | { |
1ac7e2fd | 638 | struct nfs_delegation *delegation; |
864472e9 TM |
639 | struct nfs4_opendata *opendata; |
640 | int delegation_type = 0; | |
1da177e4 LT |
641 | int status; |
642 | ||
6f220ed5 TM |
643 | opendata = nfs4_open_recoverdata_alloc(ctx, state); |
644 | if (IS_ERR(opendata)) | |
645 | return PTR_ERR(opendata); | |
864472e9 TM |
646 | opendata->o_arg.claim = NFS4_OPEN_CLAIM_PREVIOUS; |
647 | opendata->o_arg.fh = NFS_FH(state->inode); | |
1ac7e2fd TM |
648 | rcu_read_lock(); |
649 | delegation = rcu_dereference(NFS_I(state->inode)->delegation); | |
650 | if (delegation != NULL && (delegation->flags & NFS_DELEGATION_NEED_RECLAIM) != 0) | |
651 | delegation_type = delegation->flags; | |
652 | rcu_read_unlock(); | |
864472e9 TM |
653 | opendata->o_arg.u.delegation_type = delegation_type; |
654 | status = nfs4_open_recover(opendata, state); | |
c6d00e63 | 655 | nfs4_opendata_put(opendata); |
1da177e4 LT |
656 | return status; |
657 | } | |
658 | ||
539cd03a | 659 | static int nfs4_do_open_reclaim(struct nfs_open_context *ctx, struct nfs4_state *state) |
1da177e4 LT |
660 | { |
661 | struct nfs_server *server = NFS_SERVER(state->inode); | |
662 | struct nfs4_exception exception = { }; | |
663 | int err; | |
664 | do { | |
539cd03a | 665 | err = _nfs4_do_open_reclaim(ctx, state); |
202b50dc TM |
666 | if (err != -NFS4ERR_DELAY) |
667 | break; | |
668 | nfs4_handle_exception(server, err, &exception); | |
1da177e4 LT |
669 | } while (exception.retry); |
670 | return err; | |
671 | } | |
672 | ||
864472e9 TM |
673 | static int nfs4_open_reclaim(struct nfs4_state_owner *sp, struct nfs4_state *state) |
674 | { | |
675 | struct nfs_open_context *ctx; | |
676 | int ret; | |
677 | ||
678 | ctx = nfs4_state_find_open_context(state); | |
679 | if (IS_ERR(ctx)) | |
680 | return PTR_ERR(ctx); | |
539cd03a | 681 | ret = nfs4_do_open_reclaim(ctx, state); |
864472e9 TM |
682 | put_nfs_open_context(ctx); |
683 | return ret; | |
684 | } | |
685 | ||
13437e12 | 686 | static int _nfs4_open_delegation_recall(struct nfs_open_context *ctx, struct nfs4_state *state, const nfs4_stateid *stateid) |
1da177e4 | 687 | { |
e56e0b78 | 688 | struct nfs4_opendata *opendata; |
864472e9 | 689 | int ret; |
1da177e4 | 690 | |
6f220ed5 TM |
691 | opendata = nfs4_open_recoverdata_alloc(ctx, state); |
692 | if (IS_ERR(opendata)) | |
693 | return PTR_ERR(opendata); | |
e56e0b78 | 694 | opendata->o_arg.claim = NFS4_OPEN_CLAIM_DELEGATE_CUR; |
13437e12 | 695 | memcpy(opendata->o_arg.u.delegation.data, stateid->data, |
e56e0b78 | 696 | sizeof(opendata->o_arg.u.delegation.data)); |
864472e9 | 697 | ret = nfs4_open_recover(opendata, state); |
c6d00e63 | 698 | nfs4_opendata_put(opendata); |
864472e9 | 699 | return ret; |
1da177e4 LT |
700 | } |
701 | ||
13437e12 | 702 | int nfs4_open_delegation_recall(struct nfs_open_context *ctx, struct nfs4_state *state, const nfs4_stateid *stateid) |
1da177e4 LT |
703 | { |
704 | struct nfs4_exception exception = { }; | |
539cd03a | 705 | struct nfs_server *server = NFS_SERVER(state->inode); |
1da177e4 LT |
706 | int err; |
707 | do { | |
13437e12 | 708 | err = _nfs4_open_delegation_recall(ctx, state, stateid); |
1da177e4 LT |
709 | switch (err) { |
710 | case 0: | |
711 | return err; | |
712 | case -NFS4ERR_STALE_CLIENTID: | |
713 | case -NFS4ERR_STALE_STATEID: | |
714 | case -NFS4ERR_EXPIRED: | |
715 | /* Don't recall a delegation if it was lost */ | |
7539bbab | 716 | nfs4_schedule_state_recovery(server->nfs_client); |
1da177e4 LT |
717 | return err; |
718 | } | |
719 | err = nfs4_handle_exception(server, err, &exception); | |
720 | } while (exception.retry); | |
721 | return err; | |
722 | } | |
723 | ||
cdd4e68b | 724 | static void nfs4_open_confirm_prepare(struct rpc_task *task, void *calldata) |
1da177e4 | 725 | { |
cdd4e68b TM |
726 | struct nfs4_opendata *data = calldata; |
727 | struct rpc_message msg = { | |
728 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN_CONFIRM], | |
729 | .rpc_argp = &data->c_arg, | |
730 | .rpc_resp = &data->c_res, | |
731 | .rpc_cred = data->owner->so_cred, | |
1da177e4 | 732 | }; |
26e976a8 | 733 | data->timestamp = jiffies; |
cdd4e68b TM |
734 | rpc_call_setup(task, &msg, 0); |
735 | } | |
736 | ||
737 | static void nfs4_open_confirm_done(struct rpc_task *task, void *calldata) | |
738 | { | |
739 | struct nfs4_opendata *data = calldata; | |
740 | ||
741 | data->rpc_status = task->tk_status; | |
742 | if (RPC_ASSASSINATED(task)) | |
743 | return; | |
26e976a8 | 744 | if (data->rpc_status == 0) { |
cdd4e68b TM |
745 | memcpy(data->o_res.stateid.data, data->c_res.stateid.data, |
746 | sizeof(data->o_res.stateid.data)); | |
26e976a8 | 747 | renew_lease(data->o_res.server, data->timestamp); |
3e309914 | 748 | data->rpc_done = 1; |
26e976a8 | 749 | } |
cdd4e68b | 750 | nfs_confirm_seqid(&data->owner->so_seqid, data->rpc_status); |
0f9f95e0 | 751 | nfs_increment_open_seqid(data->rpc_status, data->c_arg.seqid); |
cdd4e68b TM |
752 | } |
753 | ||
754 | static void nfs4_open_confirm_release(void *calldata) | |
755 | { | |
756 | struct nfs4_opendata *data = calldata; | |
757 | struct nfs4_state *state = NULL; | |
758 | ||
759 | /* If this request hasn't been cancelled, do nothing */ | |
760 | if (data->cancelled == 0) | |
761 | goto out_free; | |
762 | /* In case of error, no cleanup! */ | |
3e309914 | 763 | if (!data->rpc_done) |
cdd4e68b TM |
764 | goto out_free; |
765 | nfs_confirm_seqid(&data->owner->so_seqid, 0); | |
766 | state = nfs4_opendata_to_nfs4_state(data); | |
1b370bc2 | 767 | if (!IS_ERR(state)) |
4a35bd41 | 768 | nfs4_close_state(&data->path, state, data->o_arg.open_flags); |
cdd4e68b | 769 | out_free: |
c6d00e63 | 770 | nfs4_opendata_put(data); |
cdd4e68b TM |
771 | } |
772 | ||
773 | static const struct rpc_call_ops nfs4_open_confirm_ops = { | |
774 | .rpc_call_prepare = nfs4_open_confirm_prepare, | |
775 | .rpc_call_done = nfs4_open_confirm_done, | |
776 | .rpc_release = nfs4_open_confirm_release, | |
777 | }; | |
778 | ||
779 | /* | |
780 | * Note: On error, nfs4_proc_open_confirm will free the struct nfs4_opendata | |
781 | */ | |
782 | static int _nfs4_proc_open_confirm(struct nfs4_opendata *data) | |
783 | { | |
784 | struct nfs_server *server = NFS_SERVER(data->dir->d_inode); | |
785 | struct rpc_task *task; | |
1da177e4 LT |
786 | int status; |
787 | ||
c6d00e63 | 788 | kref_get(&data->kref); |
3e309914 TM |
789 | data->rpc_done = 0; |
790 | data->rpc_status = 0; | |
cdd4e68b | 791 | task = rpc_run_task(server->client, RPC_TASK_ASYNC, &nfs4_open_confirm_ops, data); |
7a1218a2 | 792 | if (IS_ERR(task)) |
cdd4e68b | 793 | return PTR_ERR(task); |
cdd4e68b TM |
794 | status = nfs4_wait_for_completion_rpc_task(task); |
795 | if (status != 0) { | |
796 | data->cancelled = 1; | |
797 | smp_wmb(); | |
798 | } else | |
799 | status = data->rpc_status; | |
e6b3c4db | 800 | rpc_put_task(task); |
1da177e4 LT |
801 | return status; |
802 | } | |
803 | ||
24ac23ab | 804 | static void nfs4_open_prepare(struct rpc_task *task, void *calldata) |
1da177e4 | 805 | { |
24ac23ab TM |
806 | struct nfs4_opendata *data = calldata; |
807 | struct nfs4_state_owner *sp = data->owner; | |
1da177e4 LT |
808 | struct rpc_message msg = { |
809 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN], | |
24ac23ab TM |
810 | .rpc_argp = &data->o_arg, |
811 | .rpc_resp = &data->o_res, | |
1da177e4 LT |
812 | .rpc_cred = sp->so_cred, |
813 | }; | |
24ac23ab TM |
814 | |
815 | if (nfs_wait_on_sequence(data->o_arg.seqid, task) != 0) | |
816 | return; | |
aac00a8d TM |
817 | /* |
818 | * Check if we still need to send an OPEN call, or if we can use | |
819 | * a delegation instead. | |
820 | */ | |
821 | if (data->state != NULL) { | |
822 | struct nfs_delegation *delegation; | |
823 | ||
6ee41268 TM |
824 | if (can_open_cached(data->state, data->o_arg.open_flags & (FMODE_READ|FMODE_WRITE|O_EXCL))) |
825 | goto out_no_action; | |
aac00a8d TM |
826 | rcu_read_lock(); |
827 | delegation = rcu_dereference(NFS_I(data->state->inode)->delegation); | |
828 | if (delegation != NULL && | |
829 | (delegation->flags & NFS_DELEGATION_NEED_RECLAIM) == 0) { | |
830 | rcu_read_unlock(); | |
6ee41268 | 831 | goto out_no_action; |
aac00a8d TM |
832 | } |
833 | rcu_read_unlock(); | |
834 | } | |
24ac23ab | 835 | /* Update sequence id. */ |
9f958ab8 | 836 | data->o_arg.id = sp->so_owner_id.id; |
24ac23ab | 837 | data->o_arg.clientid = sp->so_client->cl_clientid; |
6f220ed5 | 838 | if (data->o_arg.claim == NFS4_OPEN_CLAIM_PREVIOUS) { |
864472e9 | 839 | msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN_NOATTR]; |
6f220ed5 TM |
840 | nfs_copy_fh(&data->o_res.fh, data->o_arg.fh); |
841 | } | |
26e976a8 | 842 | data->timestamp = jiffies; |
24ac23ab | 843 | rpc_call_setup(task, &msg, 0); |
6ee41268 TM |
844 | return; |
845 | out_no_action: | |
846 | task->tk_action = NULL; | |
847 | ||
24ac23ab | 848 | } |
1da177e4 | 849 | |
24ac23ab TM |
850 | static void nfs4_open_done(struct rpc_task *task, void *calldata) |
851 | { | |
852 | struct nfs4_opendata *data = calldata; | |
1da177e4 | 853 | |
24ac23ab TM |
854 | data->rpc_status = task->tk_status; |
855 | if (RPC_ASSASSINATED(task)) | |
856 | return; | |
857 | if (task->tk_status == 0) { | |
858 | switch (data->o_res.f_attr->mode & S_IFMT) { | |
6f926b5b TM |
859 | case S_IFREG: |
860 | break; | |
861 | case S_IFLNK: | |
24ac23ab | 862 | data->rpc_status = -ELOOP; |
6f926b5b TM |
863 | break; |
864 | case S_IFDIR: | |
24ac23ab | 865 | data->rpc_status = -EISDIR; |
6f926b5b TM |
866 | break; |
867 | default: | |
24ac23ab | 868 | data->rpc_status = -ENOTDIR; |
6f926b5b | 869 | } |
26e976a8 | 870 | renew_lease(data->o_res.server, data->timestamp); |
0f9f95e0 TM |
871 | if (!(data->o_res.rflags & NFS4_OPEN_RESULT_CONFIRM)) |
872 | nfs_confirm_seqid(&data->owner->so_seqid, 0); | |
6f926b5b | 873 | } |
24ac23ab | 874 | nfs_increment_open_seqid(data->rpc_status, data->o_arg.seqid); |
3e309914 | 875 | data->rpc_done = 1; |
24ac23ab | 876 | } |
6f926b5b | 877 | |
24ac23ab TM |
878 | static void nfs4_open_release(void *calldata) |
879 | { | |
880 | struct nfs4_opendata *data = calldata; | |
881 | struct nfs4_state *state = NULL; | |
882 | ||
883 | /* If this request hasn't been cancelled, do nothing */ | |
884 | if (data->cancelled == 0) | |
885 | goto out_free; | |
886 | /* In case of error, no cleanup! */ | |
3e309914 | 887 | if (data->rpc_status != 0 || !data->rpc_done) |
24ac23ab TM |
888 | goto out_free; |
889 | /* In case we need an open_confirm, no cleanup! */ | |
890 | if (data->o_res.rflags & NFS4_OPEN_RESULT_CONFIRM) | |
891 | goto out_free; | |
892 | nfs_confirm_seqid(&data->owner->so_seqid, 0); | |
893 | state = nfs4_opendata_to_nfs4_state(data); | |
1b370bc2 | 894 | if (!IS_ERR(state)) |
4a35bd41 | 895 | nfs4_close_state(&data->path, state, data->o_arg.open_flags); |
24ac23ab | 896 | out_free: |
c6d00e63 | 897 | nfs4_opendata_put(data); |
24ac23ab TM |
898 | } |
899 | ||
900 | static const struct rpc_call_ops nfs4_open_ops = { | |
901 | .rpc_call_prepare = nfs4_open_prepare, | |
902 | .rpc_call_done = nfs4_open_done, | |
903 | .rpc_release = nfs4_open_release, | |
904 | }; | |
905 | ||
906 | /* | |
907 | * Note: On error, nfs4_proc_open will free the struct nfs4_opendata | |
908 | */ | |
909 | static int _nfs4_proc_open(struct nfs4_opendata *data) | |
910 | { | |
911 | struct inode *dir = data->dir->d_inode; | |
912 | struct nfs_server *server = NFS_SERVER(dir); | |
913 | struct nfs_openargs *o_arg = &data->o_arg; | |
914 | struct nfs_openres *o_res = &data->o_res; | |
915 | struct rpc_task *task; | |
916 | int status; | |
917 | ||
c6d00e63 | 918 | kref_get(&data->kref); |
3e309914 TM |
919 | data->rpc_done = 0; |
920 | data->rpc_status = 0; | |
2ced46c2 | 921 | data->cancelled = 0; |
24ac23ab | 922 | task = rpc_run_task(server->client, RPC_TASK_ASYNC, &nfs4_open_ops, data); |
7a1218a2 | 923 | if (IS_ERR(task)) |
24ac23ab | 924 | return PTR_ERR(task); |
24ac23ab TM |
925 | status = nfs4_wait_for_completion_rpc_task(task); |
926 | if (status != 0) { | |
927 | data->cancelled = 1; | |
928 | smp_wmb(); | |
929 | } else | |
930 | status = data->rpc_status; | |
e6b3c4db | 931 | rpc_put_task(task); |
3e309914 | 932 | if (status != 0 || !data->rpc_done) |
24ac23ab TM |
933 | return status; |
934 | ||
9936781d TM |
935 | if (o_res->fh.size == 0) |
936 | _nfs4_proc_lookup(dir, o_arg->name, &o_res->fh, o_res->f_attr); | |
937 | ||
56ae19f3 TM |
938 | if (o_arg->open_flags & O_CREAT) { |
939 | update_changeattr(dir, &o_res->cinfo); | |
940 | nfs_post_op_update_inode(dir, o_res->dir_attr); | |
941 | } else | |
942 | nfs_refresh_inode(dir, o_res->dir_attr); | |
1da177e4 | 943 | if(o_res->rflags & NFS4_OPEN_RESULT_CONFIRM) { |
cdd4e68b | 944 | status = _nfs4_proc_open_confirm(data); |
1da177e4 | 945 | if (status != 0) |
24ac23ab | 946 | return status; |
1da177e4 LT |
947 | } |
948 | if (!(o_res->f_attr->valid & NFS_ATTR_FATTR)) | |
9936781d | 949 | _nfs4_proc_getattr(server, &o_res->fh, o_res->f_attr); |
24ac23ab | 950 | return 0; |
1da177e4 LT |
951 | } |
952 | ||
953 | static int _nfs4_do_access(struct inode *inode, struct rpc_cred *cred, int openflags) | |
954 | { | |
955 | struct nfs_access_entry cache; | |
956 | int mask = 0; | |
957 | int status; | |
958 | ||
959 | if (openflags & FMODE_READ) | |
960 | mask |= MAY_READ; | |
961 | if (openflags & FMODE_WRITE) | |
962 | mask |= MAY_WRITE; | |
1b45c46c TM |
963 | if (openflags & FMODE_EXEC) |
964 | mask |= MAY_EXEC; | |
1da177e4 LT |
965 | status = nfs_access_get_cached(inode, cred, &cache); |
966 | if (status == 0) | |
967 | goto out; | |
968 | ||
969 | /* Be clever: ask server to check for all possible rights */ | |
970 | cache.mask = MAY_EXEC | MAY_WRITE | MAY_READ; | |
971 | cache.cred = cred; | |
972 | cache.jiffies = jiffies; | |
973 | status = _nfs4_proc_access(inode, &cache); | |
974 | if (status != 0) | |
975 | return status; | |
976 | nfs_access_add_cache(inode, &cache); | |
977 | out: | |
978 | if ((cache.mask & mask) == mask) | |
979 | return 0; | |
980 | return -EACCES; | |
981 | } | |
982 | ||
10afec90 | 983 | static int nfs4_recover_expired_lease(struct nfs_server *server) |
58d9714a | 984 | { |
7539bbab | 985 | struct nfs_client *clp = server->nfs_client; |
6b30954e | 986 | int ret; |
58d9714a | 987 | |
6b30954e TM |
988 | for (;;) { |
989 | ret = nfs4_wait_clnt_recover(server->client, clp); | |
990 | if (ret != 0) | |
991 | return ret; | |
992 | if (!test_and_clear_bit(NFS4CLNT_LEASE_EXPIRED, &clp->cl_state)) | |
993 | break; | |
58d9714a | 994 | nfs4_schedule_state_recovery(clp); |
6b30954e TM |
995 | } |
996 | return 0; | |
58d9714a TM |
997 | } |
998 | ||
1da177e4 LT |
999 | /* |
1000 | * OPEN_EXPIRED: | |
1001 | * reclaim state on the server after a network partition. | |
1002 | * Assumes caller holds the appropriate lock | |
1003 | */ | |
539cd03a | 1004 | static int _nfs4_open_expired(struct nfs_open_context *ctx, struct nfs4_state *state) |
1da177e4 | 1005 | { |
e56e0b78 | 1006 | struct nfs4_opendata *opendata; |
864472e9 | 1007 | int ret; |
1da177e4 | 1008 | |
6f220ed5 TM |
1009 | opendata = nfs4_open_recoverdata_alloc(ctx, state); |
1010 | if (IS_ERR(opendata)) | |
1011 | return PTR_ERR(opendata); | |
864472e9 TM |
1012 | ret = nfs4_open_recover(opendata, state); |
1013 | if (ret == -ESTALE) { | |
1014 | /* Invalidate the state owner so we don't ever use it again */ | |
539cd03a TM |
1015 | nfs4_drop_state_owner(state->owner); |
1016 | d_drop(ctx->path.dentry); | |
1da177e4 | 1017 | } |
c6d00e63 | 1018 | nfs4_opendata_put(opendata); |
864472e9 | 1019 | return ret; |
1da177e4 LT |
1020 | } |
1021 | ||
539cd03a | 1022 | static inline int nfs4_do_open_expired(struct nfs_open_context *ctx, struct nfs4_state *state) |
202b50dc | 1023 | { |
539cd03a | 1024 | struct nfs_server *server = NFS_SERVER(state->inode); |
202b50dc TM |
1025 | struct nfs4_exception exception = { }; |
1026 | int err; | |
1027 | ||
1028 | do { | |
539cd03a | 1029 | err = _nfs4_open_expired(ctx, state); |
202b50dc TM |
1030 | if (err == -NFS4ERR_DELAY) |
1031 | nfs4_handle_exception(server, err, &exception); | |
1032 | } while (exception.retry); | |
1033 | return err; | |
1034 | } | |
1035 | ||
1da177e4 LT |
1036 | static int nfs4_open_expired(struct nfs4_state_owner *sp, struct nfs4_state *state) |
1037 | { | |
1da177e4 | 1038 | struct nfs_open_context *ctx; |
864472e9 | 1039 | int ret; |
1da177e4 | 1040 | |
864472e9 TM |
1041 | ctx = nfs4_state_find_open_context(state); |
1042 | if (IS_ERR(ctx)) | |
1043 | return PTR_ERR(ctx); | |
539cd03a | 1044 | ret = nfs4_do_open_expired(ctx, state); |
864472e9 TM |
1045 | put_nfs_open_context(ctx); |
1046 | return ret; | |
1da177e4 LT |
1047 | } |
1048 | ||
aa53ed54 JL |
1049 | /* |
1050 | * on an EXCLUSIVE create, the server should send back a bitmask with FATTR4-* | |
1051 | * fields corresponding to attributes that were used to store the verifier. | |
1052 | * Make sure we clobber those fields in the later setattr call | |
1053 | */ | |
1054 | static inline void nfs4_exclusive_attrset(struct nfs4_opendata *opendata, struct iattr *sattr) | |
1055 | { | |
1056 | if ((opendata->o_res.attrset[1] & FATTR4_WORD1_TIME_ACCESS) && | |
1057 | !(sattr->ia_valid & ATTR_ATIME_SET)) | |
1058 | sattr->ia_valid |= ATTR_ATIME; | |
1059 | ||
1060 | if ((opendata->o_res.attrset[1] & FATTR4_WORD1_TIME_MODIFY) && | |
1061 | !(sattr->ia_valid & ATTR_MTIME_SET)) | |
1062 | sattr->ia_valid |= ATTR_MTIME; | |
1063 | } | |
1064 | ||
1da177e4 | 1065 | /* |
24ac23ab | 1066 | * Returns a referenced nfs4_state |
1da177e4 | 1067 | */ |
ad389da7 | 1068 | 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 |
1069 | { |
1070 | struct nfs4_state_owner *sp; | |
1071 | struct nfs4_state *state = NULL; | |
1072 | struct nfs_server *server = NFS_SERVER(dir); | |
7539bbab | 1073 | struct nfs_client *clp = server->nfs_client; |
e56e0b78 | 1074 | struct nfs4_opendata *opendata; |
aac00a8d | 1075 | int status; |
1da177e4 LT |
1076 | |
1077 | /* Protect against reboot recovery conflicts */ | |
1da177e4 LT |
1078 | status = -ENOMEM; |
1079 | if (!(sp = nfs4_get_state_owner(server, cred))) { | |
1080 | dprintk("nfs4_do_open: nfs4_get_state_owner failed!\n"); | |
1081 | goto out_err; | |
1082 | } | |
58d9714a TM |
1083 | status = nfs4_recover_expired_lease(server); |
1084 | if (status != 0) | |
b4454fe1 | 1085 | goto err_put_state_owner; |
aac00a8d TM |
1086 | if (path->dentry->d_inode != NULL) |
1087 | nfs4_return_incompatible_delegation(path->dentry->d_inode, flags & (FMODE_READ|FMODE_WRITE)); | |
58d9714a TM |
1088 | down_read(&clp->cl_sem); |
1089 | status = -ENOMEM; | |
ad389da7 | 1090 | opendata = nfs4_opendata_alloc(path, sp, flags, sattr); |
e56e0b78 | 1091 | if (opendata == NULL) |
76723de0 | 1092 | goto err_release_rwsem; |
1da177e4 | 1093 | |
aac00a8d TM |
1094 | if (path->dentry->d_inode != NULL) |
1095 | opendata->state = nfs4_get_open_state(path->dentry->d_inode, sp); | |
1096 | ||
24ac23ab | 1097 | status = _nfs4_proc_open(opendata); |
1da177e4 | 1098 | if (status != 0) |
c6d00e63 | 1099 | goto err_opendata_put; |
1da177e4 | 1100 | |
aa53ed54 JL |
1101 | if (opendata->o_arg.open_flags & O_EXCL) |
1102 | nfs4_exclusive_attrset(opendata, sattr); | |
1103 | ||
24ac23ab | 1104 | state = nfs4_opendata_to_nfs4_state(opendata); |
1b370bc2 TM |
1105 | status = PTR_ERR(state); |
1106 | if (IS_ERR(state)) | |
c6d00e63 | 1107 | goto err_opendata_put; |
c6d00e63 | 1108 | nfs4_opendata_put(opendata); |
1da177e4 LT |
1109 | nfs4_put_state_owner(sp); |
1110 | up_read(&clp->cl_sem); | |
1111 | *res = state; | |
1112 | return 0; | |
c6d00e63 TM |
1113 | err_opendata_put: |
1114 | nfs4_opendata_put(opendata); | |
76723de0 TM |
1115 | err_release_rwsem: |
1116 | up_read(&clp->cl_sem); | |
e56e0b78 TM |
1117 | err_put_state_owner: |
1118 | nfs4_put_state_owner(sp); | |
1da177e4 | 1119 | out_err: |
1da177e4 LT |
1120 | *res = NULL; |
1121 | return status; | |
1122 | } | |
1123 | ||
1124 | ||
ad389da7 | 1125 | static struct nfs4_state *nfs4_do_open(struct inode *dir, struct path *path, int flags, struct iattr *sattr, struct rpc_cred *cred) |
1da177e4 LT |
1126 | { |
1127 | struct nfs4_exception exception = { }; | |
1128 | struct nfs4_state *res; | |
1129 | int status; | |
1130 | ||
1131 | do { | |
ad389da7 | 1132 | status = _nfs4_do_open(dir, path, flags, sattr, cred, &res); |
1da177e4 LT |
1133 | if (status == 0) |
1134 | break; | |
1135 | /* NOTE: BAD_SEQID means the server and client disagree about the | |
1136 | * book-keeping w.r.t. state-changing operations | |
1137 | * (OPEN/CLOSE/LOCK/LOCKU...) | |
1138 | * It is actually a sign of a bug on the client or on the server. | |
1139 | * | |
1140 | * If we receive a BAD_SEQID error in the particular case of | |
cee54fc9 | 1141 | * doing an OPEN, we assume that nfs_increment_open_seqid() will |
1da177e4 LT |
1142 | * have unhashed the old state_owner for us, and that we can |
1143 | * therefore safely retry using a new one. We should still warn | |
1144 | * the user though... | |
1145 | */ | |
1146 | if (status == -NFS4ERR_BAD_SEQID) { | |
6f43ddcc TM |
1147 | printk(KERN_WARNING "NFS: v4 server %s " |
1148 | " returned a bad sequence-id error!\n", | |
1149 | NFS_SERVER(dir)->nfs_client->cl_hostname); | |
1da177e4 LT |
1150 | exception.retry = 1; |
1151 | continue; | |
1152 | } | |
550f5747 TM |
1153 | /* |
1154 | * BAD_STATEID on OPEN means that the server cancelled our | |
1155 | * state before it received the OPEN_CONFIRM. | |
1156 | * Recover by retrying the request as per the discussion | |
1157 | * on Page 181 of RFC3530. | |
1158 | */ | |
1159 | if (status == -NFS4ERR_BAD_STATEID) { | |
1160 | exception.retry = 1; | |
1161 | continue; | |
1162 | } | |
aac00a8d TM |
1163 | if (status == -EAGAIN) { |
1164 | /* We must have found a delegation */ | |
1165 | exception.retry = 1; | |
1166 | continue; | |
1167 | } | |
1da177e4 LT |
1168 | res = ERR_PTR(nfs4_handle_exception(NFS_SERVER(dir), |
1169 | status, &exception)); | |
1170 | } while (exception.retry); | |
1171 | return res; | |
1172 | } | |
1173 | ||
3e4f6290 TM |
1174 | static int _nfs4_do_setattr(struct inode *inode, struct nfs_fattr *fattr, |
1175 | struct iattr *sattr, struct nfs4_state *state) | |
1da177e4 | 1176 | { |
3e4f6290 | 1177 | struct nfs_server *server = NFS_SERVER(inode); |
1da177e4 | 1178 | struct nfs_setattrargs arg = { |
3e4f6290 | 1179 | .fh = NFS_FH(inode), |
1da177e4 LT |
1180 | .iap = sattr, |
1181 | .server = server, | |
1182 | .bitmask = server->attr_bitmask, | |
1183 | }; | |
1184 | struct nfs_setattrres res = { | |
1185 | .fattr = fattr, | |
1186 | .server = server, | |
1187 | }; | |
1188 | struct rpc_message msg = { | |
1189 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SETATTR], | |
1190 | .rpc_argp = &arg, | |
1191 | .rpc_resp = &res, | |
1192 | }; | |
26e976a8 | 1193 | unsigned long timestamp = jiffies; |
65e4308d | 1194 | int status; |
1da177e4 | 1195 | |
0e574af1 | 1196 | nfs_fattr_init(fattr); |
1da177e4 | 1197 | |
3e4f6290 TM |
1198 | if (nfs4_copy_delegation_stateid(&arg.stateid, inode)) { |
1199 | /* Use that stateid */ | |
1200 | } else if (state != NULL) { | |
1da177e4 | 1201 | msg.rpc_cred = state->owner->so_cred; |
08e9eac4 TM |
1202 | nfs4_copy_stateid(&arg.stateid, state, current->files); |
1203 | } else | |
1da177e4 LT |
1204 | memcpy(&arg.stateid, &zero_stateid, sizeof(arg.stateid)); |
1205 | ||
65e4308d | 1206 | status = rpc_call_sync(server->client, &msg, 0); |
26e976a8 TM |
1207 | if (status == 0 && state != NULL) |
1208 | renew_lease(server, timestamp); | |
65e4308d | 1209 | return status; |
1da177e4 LT |
1210 | } |
1211 | ||
3e4f6290 TM |
1212 | static int nfs4_do_setattr(struct inode *inode, struct nfs_fattr *fattr, |
1213 | struct iattr *sattr, struct nfs4_state *state) | |
1da177e4 | 1214 | { |
3e4f6290 | 1215 | struct nfs_server *server = NFS_SERVER(inode); |
1da177e4 LT |
1216 | struct nfs4_exception exception = { }; |
1217 | int err; | |
1218 | do { | |
1219 | err = nfs4_handle_exception(server, | |
3e4f6290 | 1220 | _nfs4_do_setattr(inode, fattr, sattr, state), |
1da177e4 LT |
1221 | &exception); |
1222 | } while (exception.retry); | |
1223 | return err; | |
1224 | } | |
1225 | ||
1226 | struct nfs4_closedata { | |
4a35bd41 | 1227 | struct path path; |
1da177e4 LT |
1228 | struct inode *inode; |
1229 | struct nfs4_state *state; | |
1230 | struct nfs_closeargs arg; | |
1231 | struct nfs_closeres res; | |
516a6af6 | 1232 | struct nfs_fattr fattr; |
26e976a8 | 1233 | unsigned long timestamp; |
1da177e4 LT |
1234 | }; |
1235 | ||
963d8fe5 | 1236 | static void nfs4_free_closedata(void *data) |
9512135d | 1237 | { |
963d8fe5 TM |
1238 | struct nfs4_closedata *calldata = data; |
1239 | struct nfs4_state_owner *sp = calldata->state->owner; | |
9512135d TM |
1240 | |
1241 | nfs4_put_open_state(calldata->state); | |
1242 | nfs_free_seqid(calldata->arg.seqid); | |
9512135d | 1243 | nfs4_put_state_owner(sp); |
4a35bd41 TM |
1244 | dput(calldata->path.dentry); |
1245 | mntput(calldata->path.mnt); | |
9512135d TM |
1246 | kfree(calldata); |
1247 | } | |
1248 | ||
963d8fe5 | 1249 | static void nfs4_close_done(struct rpc_task *task, void *data) |
1da177e4 | 1250 | { |
963d8fe5 | 1251 | struct nfs4_closedata *calldata = data; |
1da177e4 | 1252 | struct nfs4_state *state = calldata->state; |
1da177e4 LT |
1253 | struct nfs_server *server = NFS_SERVER(calldata->inode); |
1254 | ||
4ce70ada TM |
1255 | if (RPC_ASSASSINATED(task)) |
1256 | return; | |
1da177e4 LT |
1257 | /* hmm. we are done with the inode, and in the process of freeing |
1258 | * the state_owner. we keep this around to process errors | |
1259 | */ | |
cee54fc9 | 1260 | nfs_increment_open_seqid(task->tk_status, calldata->arg.seqid); |
1da177e4 LT |
1261 | switch (task->tk_status) { |
1262 | case 0: | |
003707c7 | 1263 | nfs_set_open_stateid(state, &calldata->res.stateid, calldata->arg.open_flags); |
26e976a8 | 1264 | renew_lease(server, calldata->timestamp); |
1da177e4 LT |
1265 | break; |
1266 | case -NFS4ERR_STALE_STATEID: | |
1267 | case -NFS4ERR_EXPIRED: | |
1da177e4 LT |
1268 | break; |
1269 | default: | |
1270 | if (nfs4_async_handle_error(task, server) == -EAGAIN) { | |
1271 | rpc_restart_call(task); | |
1272 | return; | |
1273 | } | |
1274 | } | |
516a6af6 | 1275 | nfs_refresh_inode(calldata->inode, calldata->res.fattr); |
1da177e4 LT |
1276 | } |
1277 | ||
4ce70ada | 1278 | static void nfs4_close_prepare(struct rpc_task *task, void *data) |
1da177e4 | 1279 | { |
4ce70ada | 1280 | struct nfs4_closedata *calldata = data; |
9512135d | 1281 | struct nfs4_state *state = calldata->state; |
1da177e4 LT |
1282 | struct rpc_message msg = { |
1283 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_CLOSE], | |
1284 | .rpc_argp = &calldata->arg, | |
1285 | .rpc_resp = &calldata->res, | |
9512135d | 1286 | .rpc_cred = state->owner->so_cred, |
1da177e4 | 1287 | }; |
003707c7 TM |
1288 | int clear_rd, clear_wr, clear_rdwr; |
1289 | int mode; | |
9512135d | 1290 | |
963d8fe5 | 1291 | if (nfs_wait_on_sequence(calldata->arg.seqid, task) != 0) |
9512135d | 1292 | return; |
003707c7 TM |
1293 | |
1294 | mode = FMODE_READ|FMODE_WRITE; | |
1295 | clear_rd = clear_wr = clear_rdwr = 0; | |
4cecb76f | 1296 | spin_lock(&state->owner->so_lock); |
003707c7 | 1297 | /* Calculate the change in open mode */ |
e7616923 | 1298 | if (state->n_rdwr == 0) { |
003707c7 | 1299 | if (state->n_rdonly == 0) { |
e7616923 | 1300 | mode &= ~FMODE_READ; |
003707c7 TM |
1301 | clear_rd |= test_and_clear_bit(NFS_O_RDONLY_STATE, &state->flags); |
1302 | clear_rdwr |= test_and_clear_bit(NFS_O_RDWR_STATE, &state->flags); | |
1303 | } | |
1304 | if (state->n_wronly == 0) { | |
e7616923 | 1305 | mode &= ~FMODE_WRITE; |
003707c7 TM |
1306 | clear_wr |= test_and_clear_bit(NFS_O_WRONLY_STATE, &state->flags); |
1307 | clear_rdwr |= test_and_clear_bit(NFS_O_RDWR_STATE, &state->flags); | |
1308 | } | |
e7616923 | 1309 | } |
4cecb76f | 1310 | spin_unlock(&state->owner->so_lock); |
003707c7 | 1311 | if (!clear_rd && !clear_wr && !clear_rdwr) { |
963d8fe5 TM |
1312 | /* Note: exit _without_ calling nfs4_close_done */ |
1313 | task->tk_action = NULL; | |
9512135d TM |
1314 | return; |
1315 | } | |
516a6af6 | 1316 | nfs_fattr_init(calldata->res.fattr); |
9512135d | 1317 | if (mode != 0) |
1da177e4 | 1318 | msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN_DOWNGRADE]; |
9512135d | 1319 | calldata->arg.open_flags = mode; |
26e976a8 | 1320 | calldata->timestamp = jiffies; |
9512135d | 1321 | rpc_call_setup(task, &msg, 0); |
1da177e4 LT |
1322 | } |
1323 | ||
963d8fe5 | 1324 | static const struct rpc_call_ops nfs4_close_ops = { |
4ce70ada | 1325 | .rpc_call_prepare = nfs4_close_prepare, |
963d8fe5 TM |
1326 | .rpc_call_done = nfs4_close_done, |
1327 | .rpc_release = nfs4_free_closedata, | |
1328 | }; | |
1329 | ||
1da177e4 LT |
1330 | /* |
1331 | * It is possible for data to be read/written from a mem-mapped file | |
1332 | * after the sys_close call (which hits the vfs layer as a flush). | |
1333 | * This means that we can't safely call nfsv4 close on a file until | |
1334 | * the inode is cleared. This in turn means that we are not good | |
1335 | * NFSv4 citizens - we do not indicate to the server to update the file's | |
1336 | * share state even when we are done with one of the three share | |
1337 | * stateid's in the inode. | |
1338 | * | |
1339 | * NOTE: Caller must be holding the sp->so_owner semaphore! | |
1340 | */ | |
4a35bd41 | 1341 | int nfs4_do_close(struct path *path, struct nfs4_state *state) |
1da177e4 | 1342 | { |
4a35bd41 | 1343 | struct nfs_server *server = NFS_SERVER(state->inode); |
1da177e4 | 1344 | struct nfs4_closedata *calldata; |
b39e625b TM |
1345 | struct nfs4_state_owner *sp = state->owner; |
1346 | struct rpc_task *task; | |
9512135d | 1347 | int status = -ENOMEM; |
1da177e4 | 1348 | |
9512135d | 1349 | calldata = kmalloc(sizeof(*calldata), GFP_KERNEL); |
1da177e4 | 1350 | if (calldata == NULL) |
9512135d | 1351 | goto out; |
4a35bd41 | 1352 | calldata->inode = state->inode; |
1da177e4 | 1353 | calldata->state = state; |
4a35bd41 | 1354 | calldata->arg.fh = NFS_FH(state->inode); |
003707c7 | 1355 | calldata->arg.stateid = &state->open_stateid; |
1da177e4 | 1356 | /* Serialization for the sequence id */ |
cee54fc9 | 1357 | calldata->arg.seqid = nfs_alloc_seqid(&state->owner->so_seqid); |
9512135d TM |
1358 | if (calldata->arg.seqid == NULL) |
1359 | goto out_free_calldata; | |
516a6af6 TM |
1360 | calldata->arg.bitmask = server->attr_bitmask; |
1361 | calldata->res.fattr = &calldata->fattr; | |
1362 | calldata->res.server = server; | |
4a35bd41 TM |
1363 | calldata->path.mnt = mntget(path->mnt); |
1364 | calldata->path.dentry = dget(path->dentry); | |
9512135d | 1365 | |
b39e625b TM |
1366 | task = rpc_run_task(server->client, RPC_TASK_ASYNC, &nfs4_close_ops, calldata); |
1367 | if (IS_ERR(task)) | |
1368 | return PTR_ERR(task); | |
1369 | rpc_put_task(task); | |
1370 | return 0; | |
9512135d TM |
1371 | out_free_calldata: |
1372 | kfree(calldata); | |
1373 | out: | |
b39e625b TM |
1374 | nfs4_put_open_state(state); |
1375 | nfs4_put_state_owner(sp); | |
9512135d | 1376 | return status; |
1da177e4 LT |
1377 | } |
1378 | ||
4a35bd41 | 1379 | static int nfs4_intent_set_file(struct nameidata *nd, struct path *path, struct nfs4_state *state) |
02a913a7 TM |
1380 | { |
1381 | struct file *filp; | |
1b45c46c | 1382 | int ret; |
02a913a7 | 1383 | |
1b45c46c TM |
1384 | /* If the open_intent is for execute, we have an extra check to make */ |
1385 | if (nd->intent.open.flags & FMODE_EXEC) { | |
1386 | ret = _nfs4_do_access(state->inode, | |
1387 | state->owner->so_cred, | |
1388 | nd->intent.open.flags); | |
1389 | if (ret < 0) | |
1390 | goto out_close; | |
1391 | } | |
4a35bd41 | 1392 | filp = lookup_instantiate_filp(nd, path->dentry, NULL); |
02a913a7 TM |
1393 | if (!IS_ERR(filp)) { |
1394 | struct nfs_open_context *ctx; | |
1395 | ctx = (struct nfs_open_context *)filp->private_data; | |
1396 | ctx->state = state; | |
95cf959b TM |
1397 | return 0; |
1398 | } | |
1b45c46c TM |
1399 | ret = PTR_ERR(filp); |
1400 | out_close: | |
4a35bd41 | 1401 | nfs4_close_state(path, state, nd->intent.open.flags); |
1b45c46c | 1402 | return ret; |
02a913a7 TM |
1403 | } |
1404 | ||
1405 | struct dentry * | |
1da177e4 LT |
1406 | nfs4_atomic_open(struct inode *dir, struct dentry *dentry, struct nameidata *nd) |
1407 | { | |
ad389da7 TM |
1408 | struct path path = { |
1409 | .mnt = nd->mnt, | |
1410 | .dentry = dentry, | |
1411 | }; | |
1da177e4 LT |
1412 | struct iattr attr; |
1413 | struct rpc_cred *cred; | |
1414 | struct nfs4_state *state; | |
02a913a7 | 1415 | struct dentry *res; |
1da177e4 LT |
1416 | |
1417 | if (nd->flags & LOOKUP_CREATE) { | |
1418 | attr.ia_mode = nd->intent.open.create_mode; | |
1419 | attr.ia_valid = ATTR_MODE; | |
1420 | if (!IS_POSIXACL(dir)) | |
1421 | attr.ia_mode &= ~current->fs->umask; | |
1422 | } else { | |
1423 | attr.ia_valid = 0; | |
1424 | BUG_ON(nd->intent.open.flags & O_CREAT); | |
1425 | } | |
1426 | ||
1f163415 | 1427 | cred = rpcauth_lookupcred(NFS_CLIENT(dir)->cl_auth, 0); |
1da177e4 | 1428 | if (IS_ERR(cred)) |
02a913a7 | 1429 | return (struct dentry *)cred; |
ad389da7 | 1430 | state = nfs4_do_open(dir, &path, nd->intent.open.flags, &attr, cred); |
1da177e4 | 1431 | put_rpccred(cred); |
02a913a7 TM |
1432 | if (IS_ERR(state)) { |
1433 | if (PTR_ERR(state) == -ENOENT) | |
1434 | d_add(dentry, NULL); | |
1435 | return (struct dentry *)state; | |
1436 | } | |
24ac23ab | 1437 | res = d_add_unique(dentry, igrab(state->inode)); |
02a913a7 TM |
1438 | if (res != NULL) |
1439 | dentry = res; | |
4a35bd41 | 1440 | nfs4_intent_set_file(nd, &path, state); |
02a913a7 | 1441 | return res; |
1da177e4 LT |
1442 | } |
1443 | ||
1444 | int | |
02a913a7 | 1445 | nfs4_open_revalidate(struct inode *dir, struct dentry *dentry, int openflags, struct nameidata *nd) |
1da177e4 | 1446 | { |
ad389da7 TM |
1447 | struct path path = { |
1448 | .mnt = nd->mnt, | |
1449 | .dentry = dentry, | |
1450 | }; | |
1da177e4 LT |
1451 | struct rpc_cred *cred; |
1452 | struct nfs4_state *state; | |
1da177e4 | 1453 | |
1f163415 | 1454 | cred = rpcauth_lookupcred(NFS_CLIENT(dir)->cl_auth, 0); |
1da177e4 LT |
1455 | if (IS_ERR(cred)) |
1456 | return PTR_ERR(cred); | |
aac00a8d | 1457 | state = nfs4_do_open(dir, &path, openflags, NULL, cred); |
1da177e4 | 1458 | put_rpccred(cred); |
02a913a7 TM |
1459 | if (IS_ERR(state)) { |
1460 | switch (PTR_ERR(state)) { | |
1461 | case -EPERM: | |
1462 | case -EACCES: | |
1463 | case -EDQUOT: | |
1464 | case -ENOSPC: | |
1465 | case -EROFS: | |
1466 | lookup_instantiate_filp(nd, (struct dentry *)state, NULL); | |
1467 | return 1; | |
b87c0adf CL |
1468 | default: |
1469 | goto out_drop; | |
02a913a7 | 1470 | } |
02a913a7 | 1471 | } |
24ac23ab | 1472 | if (state->inode == dentry->d_inode) { |
4a35bd41 | 1473 | nfs4_intent_set_file(nd, &path, state); |
1da177e4 LT |
1474 | return 1; |
1475 | } | |
4a35bd41 | 1476 | nfs4_close_state(&path, state, openflags); |
02a913a7 TM |
1477 | out_drop: |
1478 | d_drop(dentry); | |
1da177e4 LT |
1479 | return 0; |
1480 | } | |
1481 | ||
1482 | ||
1483 | static int _nfs4_server_capabilities(struct nfs_server *server, struct nfs_fh *fhandle) | |
1484 | { | |
1485 | struct nfs4_server_caps_res res = {}; | |
1486 | struct rpc_message msg = { | |
1487 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SERVER_CAPS], | |
1488 | .rpc_argp = fhandle, | |
1489 | .rpc_resp = &res, | |
1490 | }; | |
1491 | int status; | |
1492 | ||
1493 | status = rpc_call_sync(server->client, &msg, 0); | |
1494 | if (status == 0) { | |
1495 | memcpy(server->attr_bitmask, res.attr_bitmask, sizeof(server->attr_bitmask)); | |
1496 | if (res.attr_bitmask[0] & FATTR4_WORD0_ACL) | |
1497 | server->caps |= NFS_CAP_ACLS; | |
1498 | if (res.has_links != 0) | |
1499 | server->caps |= NFS_CAP_HARDLINKS; | |
1500 | if (res.has_symlinks != 0) | |
1501 | server->caps |= NFS_CAP_SYMLINKS; | |
1502 | server->acl_bitmask = res.acl_bitmask; | |
1503 | } | |
1504 | return status; | |
1505 | } | |
1506 | ||
55a97593 | 1507 | int nfs4_server_capabilities(struct nfs_server *server, struct nfs_fh *fhandle) |
1da177e4 LT |
1508 | { |
1509 | struct nfs4_exception exception = { }; | |
1510 | int err; | |
1511 | do { | |
1512 | err = nfs4_handle_exception(server, | |
1513 | _nfs4_server_capabilities(server, fhandle), | |
1514 | &exception); | |
1515 | } while (exception.retry); | |
1516 | return err; | |
1517 | } | |
1518 | ||
1519 | static int _nfs4_lookup_root(struct nfs_server *server, struct nfs_fh *fhandle, | |
1520 | struct nfs_fsinfo *info) | |
1521 | { | |
1da177e4 LT |
1522 | struct nfs4_lookup_root_arg args = { |
1523 | .bitmask = nfs4_fattr_bitmap, | |
1524 | }; | |
1525 | struct nfs4_lookup_res res = { | |
1526 | .server = server, | |
0e574af1 | 1527 | .fattr = info->fattr, |
1da177e4 LT |
1528 | .fh = fhandle, |
1529 | }; | |
1530 | struct rpc_message msg = { | |
1531 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOOKUP_ROOT], | |
1532 | .rpc_argp = &args, | |
1533 | .rpc_resp = &res, | |
1534 | }; | |
0e574af1 | 1535 | nfs_fattr_init(info->fattr); |
1da177e4 LT |
1536 | return rpc_call_sync(server->client, &msg, 0); |
1537 | } | |
1538 | ||
1539 | static int nfs4_lookup_root(struct nfs_server *server, struct nfs_fh *fhandle, | |
1540 | struct nfs_fsinfo *info) | |
1541 | { | |
1542 | struct nfs4_exception exception = { }; | |
1543 | int err; | |
1544 | do { | |
1545 | err = nfs4_handle_exception(server, | |
1546 | _nfs4_lookup_root(server, fhandle, info), | |
1547 | &exception); | |
1548 | } while (exception.retry); | |
1549 | return err; | |
1550 | } | |
1551 | ||
54ceac45 DH |
1552 | /* |
1553 | * get the file handle for the "/" directory on the server | |
1554 | */ | |
1da177e4 | 1555 | static int nfs4_proc_get_root(struct nfs_server *server, struct nfs_fh *fhandle, |
54ceac45 | 1556 | struct nfs_fsinfo *info) |
1da177e4 | 1557 | { |
1da177e4 LT |
1558 | int status; |
1559 | ||
1da177e4 | 1560 | status = nfs4_lookup_root(server, fhandle, info); |
1da177e4 LT |
1561 | if (status == 0) |
1562 | status = nfs4_server_capabilities(server, fhandle); | |
1563 | if (status == 0) | |
1564 | status = nfs4_do_fsinfo(server, fhandle, info); | |
c12e87f4 | 1565 | return nfs4_map_errors(status); |
1da177e4 LT |
1566 | } |
1567 | ||
6b97fd3d MN |
1568 | /* |
1569 | * Get locations and (maybe) other attributes of a referral. | |
1570 | * Note that we'll actually follow the referral later when | |
1571 | * we detect fsid mismatch in inode revalidation | |
1572 | */ | |
56659e99 | 1573 | static int nfs4_get_referral(struct inode *dir, const struct qstr *name, struct nfs_fattr *fattr, struct nfs_fh *fhandle) |
6b97fd3d MN |
1574 | { |
1575 | int status = -ENOMEM; | |
1576 | struct page *page = NULL; | |
1577 | struct nfs4_fs_locations *locations = NULL; | |
6b97fd3d MN |
1578 | |
1579 | page = alloc_page(GFP_KERNEL); | |
1580 | if (page == NULL) | |
1581 | goto out; | |
1582 | locations = kmalloc(sizeof(struct nfs4_fs_locations), GFP_KERNEL); | |
1583 | if (locations == NULL) | |
1584 | goto out; | |
1585 | ||
c228fd3a | 1586 | status = nfs4_proc_fs_locations(dir, name, locations, page); |
6b97fd3d MN |
1587 | if (status != 0) |
1588 | goto out; | |
1589 | /* Make sure server returned a different fsid for the referral */ | |
1590 | if (nfs_fsid_equal(&NFS_SERVER(dir)->fsid, &locations->fattr.fsid)) { | |
1591 | dprintk("%s: server did not return a different fsid for a referral at %s\n", __FUNCTION__, name->name); | |
1592 | status = -EIO; | |
1593 | goto out; | |
1594 | } | |
1595 | ||
1596 | memcpy(fattr, &locations->fattr, sizeof(struct nfs_fattr)); | |
1597 | fattr->valid |= NFS_ATTR_FATTR_V4_REFERRAL; | |
1598 | if (!fattr->mode) | |
1599 | fattr->mode = S_IFDIR; | |
1600 | memset(fhandle, 0, sizeof(struct nfs_fh)); | |
1601 | out: | |
1602 | if (page) | |
1603 | __free_page(page); | |
1604 | if (locations) | |
1605 | kfree(locations); | |
1606 | return status; | |
1607 | } | |
1608 | ||
1da177e4 LT |
1609 | static int _nfs4_proc_getattr(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fattr *fattr) |
1610 | { | |
1611 | struct nfs4_getattr_arg args = { | |
1612 | .fh = fhandle, | |
1613 | .bitmask = server->attr_bitmask, | |
1614 | }; | |
1615 | struct nfs4_getattr_res res = { | |
1616 | .fattr = fattr, | |
1617 | .server = server, | |
1618 | }; | |
1619 | struct rpc_message msg = { | |
1620 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GETATTR], | |
1621 | .rpc_argp = &args, | |
1622 | .rpc_resp = &res, | |
1623 | }; | |
1624 | ||
0e574af1 | 1625 | nfs_fattr_init(fattr); |
1da177e4 LT |
1626 | return rpc_call_sync(server->client, &msg, 0); |
1627 | } | |
1628 | ||
1629 | static int nfs4_proc_getattr(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fattr *fattr) | |
1630 | { | |
1631 | struct nfs4_exception exception = { }; | |
1632 | int err; | |
1633 | do { | |
1634 | err = nfs4_handle_exception(server, | |
1635 | _nfs4_proc_getattr(server, fhandle, fattr), | |
1636 | &exception); | |
1637 | } while (exception.retry); | |
1638 | return err; | |
1639 | } | |
1640 | ||
1641 | /* | |
1642 | * The file is not closed if it is opened due to the a request to change | |
1643 | * the size of the file. The open call will not be needed once the | |
1644 | * VFS layer lookup-intents are implemented. | |
1645 | * | |
1646 | * Close is called when the inode is destroyed. | |
1647 | * If we haven't opened the file for O_WRONLY, we | |
1648 | * need to in the size_change case to obtain a stateid. | |
1649 | * | |
1650 | * Got race? | |
1651 | * Because OPEN is always done by name in nfsv4, it is | |
1652 | * possible that we opened a different file by the same | |
1653 | * name. We can recognize this race condition, but we | |
1654 | * can't do anything about it besides returning an error. | |
1655 | * | |
1656 | * This will be fixed with VFS changes (lookup-intent). | |
1657 | */ | |
1658 | static int | |
1659 | nfs4_proc_setattr(struct dentry *dentry, struct nfs_fattr *fattr, | |
1660 | struct iattr *sattr) | |
1661 | { | |
08e9eac4 TM |
1662 | struct rpc_cred *cred; |
1663 | struct inode *inode = dentry->d_inode; | |
d530838b TM |
1664 | struct nfs_open_context *ctx; |
1665 | struct nfs4_state *state = NULL; | |
1da177e4 LT |
1666 | int status; |
1667 | ||
0e574af1 | 1668 | nfs_fattr_init(fattr); |
1da177e4 | 1669 | |
1f163415 | 1670 | cred = rpcauth_lookupcred(NFS_CLIENT(inode)->cl_auth, 0); |
08e9eac4 TM |
1671 | if (IS_ERR(cred)) |
1672 | return PTR_ERR(cred); | |
d530838b TM |
1673 | |
1674 | /* Search for an existing open(O_WRITE) file */ | |
1675 | ctx = nfs_find_open_context(inode, cred, FMODE_WRITE); | |
1676 | if (ctx != NULL) | |
1677 | state = ctx->state; | |
08e9eac4 | 1678 | |
3e4f6290 | 1679 | status = nfs4_do_setattr(inode, fattr, sattr, state); |
65e4308d TM |
1680 | if (status == 0) |
1681 | nfs_setattr_update_inode(inode, sattr); | |
d530838b TM |
1682 | if (ctx != NULL) |
1683 | put_nfs_open_context(ctx); | |
08e9eac4 | 1684 | put_rpccred(cred); |
1da177e4 LT |
1685 | return status; |
1686 | } | |
1687 | ||
56659e99 TM |
1688 | static int _nfs4_proc_lookupfh(struct nfs_server *server, const struct nfs_fh *dirfh, |
1689 | const struct qstr *name, struct nfs_fh *fhandle, | |
2b3de441 DH |
1690 | struct nfs_fattr *fattr) |
1691 | { | |
1692 | int status; | |
1693 | struct nfs4_lookup_arg args = { | |
1694 | .bitmask = server->attr_bitmask, | |
1695 | .dir_fh = dirfh, | |
1696 | .name = name, | |
1697 | }; | |
1698 | struct nfs4_lookup_res res = { | |
1699 | .server = server, | |
1700 | .fattr = fattr, | |
1701 | .fh = fhandle, | |
1702 | }; | |
1703 | struct rpc_message msg = { | |
1704 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOOKUP], | |
1705 | .rpc_argp = &args, | |
1706 | .rpc_resp = &res, | |
1707 | }; | |
1708 | ||
1709 | nfs_fattr_init(fattr); | |
1710 | ||
1711 | dprintk("NFS call lookupfh %s\n", name->name); | |
1712 | status = rpc_call_sync(server->client, &msg, 0); | |
1713 | dprintk("NFS reply lookupfh: %d\n", status); | |
2b3de441 DH |
1714 | return status; |
1715 | } | |
1716 | ||
1717 | static int nfs4_proc_lookupfh(struct nfs_server *server, struct nfs_fh *dirfh, | |
1718 | struct qstr *name, struct nfs_fh *fhandle, | |
1719 | struct nfs_fattr *fattr) | |
1720 | { | |
1721 | struct nfs4_exception exception = { }; | |
1722 | int err; | |
1723 | do { | |
4e56e082 TM |
1724 | err = _nfs4_proc_lookupfh(server, dirfh, name, fhandle, fattr); |
1725 | /* FIXME: !!!! */ | |
1726 | if (err == -NFS4ERR_MOVED) { | |
1727 | err = -EREMOTE; | |
1728 | break; | |
1729 | } | |
1730 | err = nfs4_handle_exception(server, err, &exception); | |
2b3de441 DH |
1731 | } while (exception.retry); |
1732 | return err; | |
1733 | } | |
1734 | ||
56659e99 | 1735 | static int _nfs4_proc_lookup(struct inode *dir, const struct qstr *name, |
1da177e4 LT |
1736 | struct nfs_fh *fhandle, struct nfs_fattr *fattr) |
1737 | { | |
4e56e082 | 1738 | int status; |
1da177e4 LT |
1739 | |
1740 | dprintk("NFS call lookup %s\n", name->name); | |
4e56e082 | 1741 | status = _nfs4_proc_lookupfh(NFS_SERVER(dir), NFS_FH(dir), name, fhandle, fattr); |
6b97fd3d MN |
1742 | if (status == -NFS4ERR_MOVED) |
1743 | status = nfs4_get_referral(dir, name, fattr, fhandle); | |
1da177e4 LT |
1744 | dprintk("NFS reply lookup: %d\n", status); |
1745 | return status; | |
1746 | } | |
1747 | ||
1748 | static int nfs4_proc_lookup(struct inode *dir, struct qstr *name, struct nfs_fh *fhandle, struct nfs_fattr *fattr) | |
1749 | { | |
1750 | struct nfs4_exception exception = { }; | |
1751 | int err; | |
1752 | do { | |
1753 | err = nfs4_handle_exception(NFS_SERVER(dir), | |
1754 | _nfs4_proc_lookup(dir, name, fhandle, fattr), | |
1755 | &exception); | |
1756 | } while (exception.retry); | |
1757 | return err; | |
1758 | } | |
1759 | ||
1760 | static int _nfs4_proc_access(struct inode *inode, struct nfs_access_entry *entry) | |
1761 | { | |
1762 | struct nfs4_accessargs args = { | |
1763 | .fh = NFS_FH(inode), | |
1764 | }; | |
1765 | struct nfs4_accessres res = { 0 }; | |
1766 | struct rpc_message msg = { | |
1767 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_ACCESS], | |
1768 | .rpc_argp = &args, | |
1769 | .rpc_resp = &res, | |
1770 | .rpc_cred = entry->cred, | |
1771 | }; | |
1772 | int mode = entry->mask; | |
1773 | int status; | |
1774 | ||
1775 | /* | |
1776 | * Determine which access bits we want to ask for... | |
1777 | */ | |
1778 | if (mode & MAY_READ) | |
1779 | args.access |= NFS4_ACCESS_READ; | |
1780 | if (S_ISDIR(inode->i_mode)) { | |
1781 | if (mode & MAY_WRITE) | |
1782 | args.access |= NFS4_ACCESS_MODIFY | NFS4_ACCESS_EXTEND | NFS4_ACCESS_DELETE; | |
1783 | if (mode & MAY_EXEC) | |
1784 | args.access |= NFS4_ACCESS_LOOKUP; | |
1785 | } else { | |
1786 | if (mode & MAY_WRITE) | |
1787 | args.access |= NFS4_ACCESS_MODIFY | NFS4_ACCESS_EXTEND; | |
1788 | if (mode & MAY_EXEC) | |
1789 | args.access |= NFS4_ACCESS_EXECUTE; | |
1790 | } | |
1791 | status = rpc_call_sync(NFS_CLIENT(inode), &msg, 0); | |
1792 | if (!status) { | |
1793 | entry->mask = 0; | |
1794 | if (res.access & NFS4_ACCESS_READ) | |
1795 | entry->mask |= MAY_READ; | |
1796 | if (res.access & (NFS4_ACCESS_MODIFY | NFS4_ACCESS_EXTEND | NFS4_ACCESS_DELETE)) | |
1797 | entry->mask |= MAY_WRITE; | |
1798 | if (res.access & (NFS4_ACCESS_LOOKUP|NFS4_ACCESS_EXECUTE)) | |
1799 | entry->mask |= MAY_EXEC; | |
1800 | } | |
1801 | return status; | |
1802 | } | |
1803 | ||
1804 | static int nfs4_proc_access(struct inode *inode, struct nfs_access_entry *entry) | |
1805 | { | |
1806 | struct nfs4_exception exception = { }; | |
1807 | int err; | |
1808 | do { | |
1809 | err = nfs4_handle_exception(NFS_SERVER(inode), | |
1810 | _nfs4_proc_access(inode, entry), | |
1811 | &exception); | |
1812 | } while (exception.retry); | |
1813 | return err; | |
1814 | } | |
1815 | ||
1816 | /* | |
1817 | * TODO: For the time being, we don't try to get any attributes | |
1818 | * along with any of the zero-copy operations READ, READDIR, | |
1819 | * READLINK, WRITE. | |
1820 | * | |
1821 | * In the case of the first three, we want to put the GETATTR | |
1822 | * after the read-type operation -- this is because it is hard | |
1823 | * to predict the length of a GETATTR response in v4, and thus | |
1824 | * align the READ data correctly. This means that the GETATTR | |
1825 | * may end up partially falling into the page cache, and we should | |
1826 | * shift it into the 'tail' of the xdr_buf before processing. | |
1827 | * To do this efficiently, we need to know the total length | |
1828 | * of data received, which doesn't seem to be available outside | |
1829 | * of the RPC layer. | |
1830 | * | |
1831 | * In the case of WRITE, we also want to put the GETATTR after | |
1832 | * the operation -- in this case because we want to make sure | |
1833 | * we get the post-operation mtime and size. This means that | |
1834 | * we can't use xdr_encode_pages() as written: we need a variant | |
1835 | * of it which would leave room in the 'tail' iovec. | |
1836 | * | |
1837 | * Both of these changes to the XDR layer would in fact be quite | |
1838 | * minor, but I decided to leave them for a subsequent patch. | |
1839 | */ | |
1840 | static int _nfs4_proc_readlink(struct inode *inode, struct page *page, | |
1841 | unsigned int pgbase, unsigned int pglen) | |
1842 | { | |
1843 | struct nfs4_readlink args = { | |
1844 | .fh = NFS_FH(inode), | |
1845 | .pgbase = pgbase, | |
1846 | .pglen = pglen, | |
1847 | .pages = &page, | |
1848 | }; | |
1849 | struct rpc_message msg = { | |
1850 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_READLINK], | |
1851 | .rpc_argp = &args, | |
1852 | .rpc_resp = NULL, | |
1853 | }; | |
1854 | ||
1855 | return rpc_call_sync(NFS_CLIENT(inode), &msg, 0); | |
1856 | } | |
1857 | ||
1858 | static int nfs4_proc_readlink(struct inode *inode, struct page *page, | |
1859 | unsigned int pgbase, unsigned int pglen) | |
1860 | { | |
1861 | struct nfs4_exception exception = { }; | |
1862 | int err; | |
1863 | do { | |
1864 | err = nfs4_handle_exception(NFS_SERVER(inode), | |
1865 | _nfs4_proc_readlink(inode, page, pgbase, pglen), | |
1866 | &exception); | |
1867 | } while (exception.retry); | |
1868 | return err; | |
1869 | } | |
1870 | ||
1da177e4 LT |
1871 | /* |
1872 | * Got race? | |
1873 | * We will need to arrange for the VFS layer to provide an atomic open. | |
1874 | * Until then, this create/open method is prone to inefficiency and race | |
1875 | * conditions due to the lookup, create, and open VFS calls from sys_open() | |
1876 | * placed on the wire. | |
1877 | * | |
1878 | * Given the above sorry state of affairs, I'm simply sending an OPEN. | |
1879 | * The file will be opened again in the subsequent VFS open call | |
1880 | * (nfs4_proc_file_open). | |
1881 | * | |
1882 | * The open for read will just hang around to be used by any process that | |
1883 | * opens the file O_RDONLY. This will all be resolved with the VFS changes. | |
1884 | */ | |
1885 | ||
1886 | static int | |
1887 | nfs4_proc_create(struct inode *dir, struct dentry *dentry, struct iattr *sattr, | |
02a913a7 | 1888 | int flags, struct nameidata *nd) |
1da177e4 | 1889 | { |
ad389da7 TM |
1890 | struct path path = { |
1891 | .mnt = nd->mnt, | |
1892 | .dentry = dentry, | |
1893 | }; | |
1da177e4 LT |
1894 | struct nfs4_state *state; |
1895 | struct rpc_cred *cred; | |
1896 | int status = 0; | |
1897 | ||
1f163415 | 1898 | cred = rpcauth_lookupcred(NFS_CLIENT(dir)->cl_auth, 0); |
1da177e4 LT |
1899 | if (IS_ERR(cred)) { |
1900 | status = PTR_ERR(cred); | |
1901 | goto out; | |
1902 | } | |
ad389da7 | 1903 | state = nfs4_do_open(dir, &path, flags, sattr, cred); |
1da177e4 LT |
1904 | put_rpccred(cred); |
1905 | if (IS_ERR(state)) { | |
1906 | status = PTR_ERR(state); | |
1907 | goto out; | |
1908 | } | |
24ac23ab | 1909 | d_instantiate(dentry, igrab(state->inode)); |
1da177e4 LT |
1910 | if (flags & O_EXCL) { |
1911 | struct nfs_fattr fattr; | |
3e4f6290 | 1912 | status = nfs4_do_setattr(state->inode, &fattr, sattr, state); |
02a913a7 | 1913 | if (status == 0) |
65e4308d | 1914 | nfs_setattr_update_inode(state->inode, sattr); |
aa53ed54 | 1915 | nfs_post_op_update_inode(state->inode, &fattr); |
02a913a7 | 1916 | } |
ad389da7 | 1917 | if (status == 0 && (nd->flags & LOOKUP_OPEN) != 0) |
4a35bd41 | 1918 | status = nfs4_intent_set_file(nd, &path, state); |
02a913a7 | 1919 | else |
4a35bd41 | 1920 | nfs4_close_state(&path, state, flags); |
1da177e4 LT |
1921 | out: |
1922 | return status; | |
1923 | } | |
1924 | ||
1925 | static int _nfs4_proc_remove(struct inode *dir, struct qstr *name) | |
1926 | { | |
16e42959 | 1927 | struct nfs_server *server = NFS_SERVER(dir); |
1da177e4 LT |
1928 | struct nfs4_remove_arg args = { |
1929 | .fh = NFS_FH(dir), | |
1930 | .name = name, | |
16e42959 TM |
1931 | .bitmask = server->attr_bitmask, |
1932 | }; | |
1933 | struct nfs_fattr dir_attr; | |
1934 | struct nfs4_remove_res res = { | |
1935 | .server = server, | |
1936 | .dir_attr = &dir_attr, | |
1da177e4 | 1937 | }; |
1da177e4 LT |
1938 | struct rpc_message msg = { |
1939 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_REMOVE], | |
1940 | .rpc_argp = &args, | |
1941 | .rpc_resp = &res, | |
1942 | }; | |
1943 | int status; | |
1944 | ||
16e42959 TM |
1945 | nfs_fattr_init(res.dir_attr); |
1946 | status = rpc_call_sync(server->client, &msg, 0); | |
1947 | if (status == 0) { | |
1948 | update_changeattr(dir, &res.cinfo); | |
1949 | nfs_post_op_update_inode(dir, res.dir_attr); | |
1950 | } | |
1da177e4 LT |
1951 | return status; |
1952 | } | |
1953 | ||
1954 | static int nfs4_proc_remove(struct inode *dir, struct qstr *name) | |
1955 | { | |
1956 | struct nfs4_exception exception = { }; | |
1957 | int err; | |
1958 | do { | |
1959 | err = nfs4_handle_exception(NFS_SERVER(dir), | |
1960 | _nfs4_proc_remove(dir, name), | |
1961 | &exception); | |
1962 | } while (exception.retry); | |
1963 | return err; | |
1964 | } | |
1965 | ||
1966 | struct unlink_desc { | |
1967 | struct nfs4_remove_arg args; | |
16e42959 TM |
1968 | struct nfs4_remove_res res; |
1969 | struct nfs_fattr dir_attr; | |
1da177e4 LT |
1970 | }; |
1971 | ||
1972 | static int nfs4_proc_unlink_setup(struct rpc_message *msg, struct dentry *dir, | |
1973 | struct qstr *name) | |
1974 | { | |
16e42959 | 1975 | struct nfs_server *server = NFS_SERVER(dir->d_inode); |
1da177e4 LT |
1976 | struct unlink_desc *up; |
1977 | ||
5cbded58 | 1978 | up = kmalloc(sizeof(*up), GFP_KERNEL); |
1da177e4 LT |
1979 | if (!up) |
1980 | return -ENOMEM; | |
1981 | ||
1982 | up->args.fh = NFS_FH(dir->d_inode); | |
1983 | up->args.name = name; | |
16e42959 TM |
1984 | up->args.bitmask = server->attr_bitmask; |
1985 | up->res.server = server; | |
1986 | up->res.dir_attr = &up->dir_attr; | |
1da177e4 LT |
1987 | |
1988 | msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_REMOVE]; | |
1989 | msg->rpc_argp = &up->args; | |
1990 | msg->rpc_resp = &up->res; | |
1991 | return 0; | |
1992 | } | |
1993 | ||
1994 | static int nfs4_proc_unlink_done(struct dentry *dir, struct rpc_task *task) | |
1995 | { | |
1996 | struct rpc_message *msg = &task->tk_msg; | |
1997 | struct unlink_desc *up; | |
1998 | ||
1999 | if (msg->rpc_resp != NULL) { | |
2000 | up = container_of(msg->rpc_resp, struct unlink_desc, res); | |
16e42959 TM |
2001 | update_changeattr(dir->d_inode, &up->res.cinfo); |
2002 | nfs_post_op_update_inode(dir->d_inode, up->res.dir_attr); | |
1da177e4 LT |
2003 | kfree(up); |
2004 | msg->rpc_resp = NULL; | |
2005 | msg->rpc_argp = NULL; | |
2006 | } | |
2007 | return 0; | |
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 | ||
4f390c15 | 2107 | static int _nfs4_proc_symlink(struct inode *dir, struct dentry *dentry, |
94a6d753 | 2108 | struct page *page, unsigned int len, struct iattr *sattr) |
1da177e4 LT |
2109 | { |
2110 | struct nfs_server *server = NFS_SERVER(dir); | |
4f390c15 CL |
2111 | struct nfs_fh fhandle; |
2112 | struct nfs_fattr fattr, dir_fattr; | |
1da177e4 LT |
2113 | struct nfs4_create_arg arg = { |
2114 | .dir_fh = NFS_FH(dir), | |
2115 | .server = server, | |
4f390c15 | 2116 | .name = &dentry->d_name, |
1da177e4 LT |
2117 | .attrs = sattr, |
2118 | .ftype = NF4LNK, | |
2119 | .bitmask = server->attr_bitmask, | |
2120 | }; | |
2121 | struct nfs4_create_res res = { | |
2122 | .server = server, | |
4f390c15 CL |
2123 | .fh = &fhandle, |
2124 | .fattr = &fattr, | |
56ae19f3 | 2125 | .dir_fattr = &dir_fattr, |
1da177e4 LT |
2126 | }; |
2127 | struct rpc_message msg = { | |
2128 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SYMLINK], | |
2129 | .rpc_argp = &arg, | |
2130 | .rpc_resp = &res, | |
2131 | }; | |
2132 | int status; | |
2133 | ||
94a6d753 | 2134 | if (len > NFS4_MAXPATHLEN) |
1da177e4 | 2135 | return -ENAMETOOLONG; |
4f390c15 | 2136 | |
94a6d753 CL |
2137 | arg.u.symlink.pages = &page; |
2138 | arg.u.symlink.len = len; | |
4f390c15 | 2139 | nfs_fattr_init(&fattr); |
56ae19f3 | 2140 | nfs_fattr_init(&dir_fattr); |
1da177e4 LT |
2141 | |
2142 | status = rpc_call_sync(NFS_CLIENT(dir), &msg, 0); | |
4f390c15 | 2143 | if (!status) { |
1da177e4 | 2144 | update_changeattr(dir, &res.dir_cinfo); |
4f390c15 CL |
2145 | nfs_post_op_update_inode(dir, res.dir_fattr); |
2146 | status = nfs_instantiate(dentry, &fhandle, &fattr); | |
2147 | } | |
1da177e4 LT |
2148 | return status; |
2149 | } | |
2150 | ||
4f390c15 | 2151 | static int nfs4_proc_symlink(struct inode *dir, struct dentry *dentry, |
94a6d753 | 2152 | struct page *page, unsigned int len, struct iattr *sattr) |
1da177e4 LT |
2153 | { |
2154 | struct nfs4_exception exception = { }; | |
2155 | int err; | |
2156 | do { | |
2157 | err = nfs4_handle_exception(NFS_SERVER(dir), | |
94a6d753 CL |
2158 | _nfs4_proc_symlink(dir, dentry, page, |
2159 | len, sattr), | |
1da177e4 LT |
2160 | &exception); |
2161 | } while (exception.retry); | |
2162 | return err; | |
2163 | } | |
2164 | ||
2165 | static int _nfs4_proc_mkdir(struct inode *dir, struct dentry *dentry, | |
2166 | struct iattr *sattr) | |
2167 | { | |
2168 | struct nfs_server *server = NFS_SERVER(dir); | |
2169 | struct nfs_fh fhandle; | |
56ae19f3 | 2170 | struct nfs_fattr fattr, dir_fattr; |
1da177e4 LT |
2171 | struct nfs4_create_arg arg = { |
2172 | .dir_fh = NFS_FH(dir), | |
2173 | .server = server, | |
2174 | .name = &dentry->d_name, | |
2175 | .attrs = sattr, | |
2176 | .ftype = NF4DIR, | |
2177 | .bitmask = server->attr_bitmask, | |
2178 | }; | |
2179 | struct nfs4_create_res res = { | |
2180 | .server = server, | |
2181 | .fh = &fhandle, | |
2182 | .fattr = &fattr, | |
56ae19f3 | 2183 | .dir_fattr = &dir_fattr, |
1da177e4 LT |
2184 | }; |
2185 | struct rpc_message msg = { | |
2186 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_CREATE], | |
2187 | .rpc_argp = &arg, | |
2188 | .rpc_resp = &res, | |
2189 | }; | |
2190 | int status; | |
2191 | ||
0e574af1 | 2192 | nfs_fattr_init(&fattr); |
56ae19f3 | 2193 | nfs_fattr_init(&dir_fattr); |
1da177e4 LT |
2194 | |
2195 | status = rpc_call_sync(NFS_CLIENT(dir), &msg, 0); | |
2196 | if (!status) { | |
2197 | update_changeattr(dir, &res.dir_cinfo); | |
56ae19f3 | 2198 | nfs_post_op_update_inode(dir, res.dir_fattr); |
1da177e4 LT |
2199 | status = nfs_instantiate(dentry, &fhandle, &fattr); |
2200 | } | |
2201 | return status; | |
2202 | } | |
2203 | ||
2204 | static int nfs4_proc_mkdir(struct inode *dir, struct dentry *dentry, | |
2205 | struct iattr *sattr) | |
2206 | { | |
2207 | struct nfs4_exception exception = { }; | |
2208 | int err; | |
2209 | do { | |
2210 | err = nfs4_handle_exception(NFS_SERVER(dir), | |
2211 | _nfs4_proc_mkdir(dir, dentry, sattr), | |
2212 | &exception); | |
2213 | } while (exception.retry); | |
2214 | return err; | |
2215 | } | |
2216 | ||
2217 | static int _nfs4_proc_readdir(struct dentry *dentry, struct rpc_cred *cred, | |
2218 | u64 cookie, struct page *page, unsigned int count, int plus) | |
2219 | { | |
2220 | struct inode *dir = dentry->d_inode; | |
2221 | struct nfs4_readdir_arg args = { | |
2222 | .fh = NFS_FH(dir), | |
2223 | .pages = &page, | |
2224 | .pgbase = 0, | |
2225 | .count = count, | |
2226 | .bitmask = NFS_SERVER(dentry->d_inode)->attr_bitmask, | |
2227 | }; | |
2228 | struct nfs4_readdir_res res; | |
2229 | struct rpc_message msg = { | |
2230 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_READDIR], | |
2231 | .rpc_argp = &args, | |
2232 | .rpc_resp = &res, | |
2233 | .rpc_cred = cred, | |
2234 | }; | |
2235 | int status; | |
2236 | ||
eadf4598 TM |
2237 | dprintk("%s: dentry = %s/%s, cookie = %Lu\n", __FUNCTION__, |
2238 | dentry->d_parent->d_name.name, | |
2239 | dentry->d_name.name, | |
2240 | (unsigned long long)cookie); | |
1da177e4 LT |
2241 | nfs4_setup_readdir(cookie, NFS_COOKIEVERF(dir), dentry, &args); |
2242 | res.pgbase = args.pgbase; | |
2243 | status = rpc_call_sync(NFS_CLIENT(dir), &msg, 0); | |
2244 | if (status == 0) | |
2245 | memcpy(NFS_COOKIEVERF(dir), res.verifier.data, NFS4_VERIFIER_SIZE); | |
eadf4598 | 2246 | dprintk("%s: returns %d\n", __FUNCTION__, status); |
1da177e4 LT |
2247 | return status; |
2248 | } | |
2249 | ||
2250 | static int nfs4_proc_readdir(struct dentry *dentry, struct rpc_cred *cred, | |
2251 | u64 cookie, struct page *page, unsigned int count, int plus) | |
2252 | { | |
2253 | struct nfs4_exception exception = { }; | |
2254 | int err; | |
2255 | do { | |
2256 | err = nfs4_handle_exception(NFS_SERVER(dentry->d_inode), | |
2257 | _nfs4_proc_readdir(dentry, cred, cookie, | |
2258 | page, count, plus), | |
2259 | &exception); | |
2260 | } while (exception.retry); | |
2261 | return err; | |
2262 | } | |
2263 | ||
2264 | static int _nfs4_proc_mknod(struct inode *dir, struct dentry *dentry, | |
2265 | struct iattr *sattr, dev_t rdev) | |
2266 | { | |
2267 | struct nfs_server *server = NFS_SERVER(dir); | |
2268 | struct nfs_fh fh; | |
56ae19f3 | 2269 | struct nfs_fattr fattr, dir_fattr; |
1da177e4 LT |
2270 | struct nfs4_create_arg arg = { |
2271 | .dir_fh = NFS_FH(dir), | |
2272 | .server = server, | |
2273 | .name = &dentry->d_name, | |
2274 | .attrs = sattr, | |
2275 | .bitmask = server->attr_bitmask, | |
2276 | }; | |
2277 | struct nfs4_create_res res = { | |
2278 | .server = server, | |
2279 | .fh = &fh, | |
2280 | .fattr = &fattr, | |
56ae19f3 | 2281 | .dir_fattr = &dir_fattr, |
1da177e4 LT |
2282 | }; |
2283 | struct rpc_message msg = { | |
2284 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_CREATE], | |
2285 | .rpc_argp = &arg, | |
2286 | .rpc_resp = &res, | |
2287 | }; | |
2288 | int status; | |
2289 | int mode = sattr->ia_mode; | |
2290 | ||
0e574af1 | 2291 | nfs_fattr_init(&fattr); |
56ae19f3 | 2292 | nfs_fattr_init(&dir_fattr); |
1da177e4 LT |
2293 | |
2294 | BUG_ON(!(sattr->ia_valid & ATTR_MODE)); | |
2295 | BUG_ON(!S_ISFIFO(mode) && !S_ISBLK(mode) && !S_ISCHR(mode) && !S_ISSOCK(mode)); | |
2296 | if (S_ISFIFO(mode)) | |
2297 | arg.ftype = NF4FIFO; | |
2298 | else if (S_ISBLK(mode)) { | |
2299 | arg.ftype = NF4BLK; | |
2300 | arg.u.device.specdata1 = MAJOR(rdev); | |
2301 | arg.u.device.specdata2 = MINOR(rdev); | |
2302 | } | |
2303 | else if (S_ISCHR(mode)) { | |
2304 | arg.ftype = NF4CHR; | |
2305 | arg.u.device.specdata1 = MAJOR(rdev); | |
2306 | arg.u.device.specdata2 = MINOR(rdev); | |
2307 | } | |
2308 | else | |
2309 | arg.ftype = NF4SOCK; | |
2310 | ||
2311 | status = rpc_call_sync(NFS_CLIENT(dir), &msg, 0); | |
2312 | if (status == 0) { | |
2313 | update_changeattr(dir, &res.dir_cinfo); | |
56ae19f3 | 2314 | nfs_post_op_update_inode(dir, res.dir_fattr); |
1da177e4 LT |
2315 | status = nfs_instantiate(dentry, &fh, &fattr); |
2316 | } | |
2317 | return status; | |
2318 | } | |
2319 | ||
2320 | static int nfs4_proc_mknod(struct inode *dir, struct dentry *dentry, | |
2321 | struct iattr *sattr, dev_t rdev) | |
2322 | { | |
2323 | struct nfs4_exception exception = { }; | |
2324 | int err; | |
2325 | do { | |
2326 | err = nfs4_handle_exception(NFS_SERVER(dir), | |
2327 | _nfs4_proc_mknod(dir, dentry, sattr, rdev), | |
2328 | &exception); | |
2329 | } while (exception.retry); | |
2330 | return err; | |
2331 | } | |
2332 | ||
2333 | static int _nfs4_proc_statfs(struct nfs_server *server, struct nfs_fh *fhandle, | |
2334 | struct nfs_fsstat *fsstat) | |
2335 | { | |
2336 | struct nfs4_statfs_arg args = { | |
2337 | .fh = fhandle, | |
2338 | .bitmask = server->attr_bitmask, | |
2339 | }; | |
2340 | struct rpc_message msg = { | |
2341 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_STATFS], | |
2342 | .rpc_argp = &args, | |
2343 | .rpc_resp = fsstat, | |
2344 | }; | |
2345 | ||
0e574af1 | 2346 | nfs_fattr_init(fsstat->fattr); |
1da177e4 LT |
2347 | return rpc_call_sync(server->client, &msg, 0); |
2348 | } | |
2349 | ||
2350 | static int nfs4_proc_statfs(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fsstat *fsstat) | |
2351 | { | |
2352 | struct nfs4_exception exception = { }; | |
2353 | int err; | |
2354 | do { | |
2355 | err = nfs4_handle_exception(server, | |
2356 | _nfs4_proc_statfs(server, fhandle, fsstat), | |
2357 | &exception); | |
2358 | } while (exception.retry); | |
2359 | return err; | |
2360 | } | |
2361 | ||
2362 | static int _nfs4_do_fsinfo(struct nfs_server *server, struct nfs_fh *fhandle, | |
2363 | struct nfs_fsinfo *fsinfo) | |
2364 | { | |
2365 | struct nfs4_fsinfo_arg args = { | |
2366 | .fh = fhandle, | |
2367 | .bitmask = server->attr_bitmask, | |
2368 | }; | |
2369 | struct rpc_message msg = { | |
2370 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_FSINFO], | |
2371 | .rpc_argp = &args, | |
2372 | .rpc_resp = fsinfo, | |
2373 | }; | |
2374 | ||
2375 | return rpc_call_sync(server->client, &msg, 0); | |
2376 | } | |
2377 | ||
2378 | static int nfs4_do_fsinfo(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fsinfo *fsinfo) | |
2379 | { | |
2380 | struct nfs4_exception exception = { }; | |
2381 | int err; | |
2382 | ||
2383 | do { | |
2384 | err = nfs4_handle_exception(server, | |
2385 | _nfs4_do_fsinfo(server, fhandle, fsinfo), | |
2386 | &exception); | |
2387 | } while (exception.retry); | |
2388 | return err; | |
2389 | } | |
2390 | ||
2391 | static int nfs4_proc_fsinfo(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fsinfo *fsinfo) | |
2392 | { | |
0e574af1 | 2393 | nfs_fattr_init(fsinfo->fattr); |
1da177e4 LT |
2394 | return nfs4_do_fsinfo(server, fhandle, fsinfo); |
2395 | } | |
2396 | ||
2397 | static int _nfs4_proc_pathconf(struct nfs_server *server, struct nfs_fh *fhandle, | |
2398 | struct nfs_pathconf *pathconf) | |
2399 | { | |
2400 | struct nfs4_pathconf_arg args = { | |
2401 | .fh = fhandle, | |
2402 | .bitmask = server->attr_bitmask, | |
2403 | }; | |
2404 | struct rpc_message msg = { | |
2405 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_PATHCONF], | |
2406 | .rpc_argp = &args, | |
2407 | .rpc_resp = pathconf, | |
2408 | }; | |
2409 | ||
2410 | /* None of the pathconf attributes are mandatory to implement */ | |
2411 | if ((args.bitmask[0] & nfs4_pathconf_bitmap[0]) == 0) { | |
2412 | memset(pathconf, 0, sizeof(*pathconf)); | |
2413 | return 0; | |
2414 | } | |
2415 | ||
0e574af1 | 2416 | nfs_fattr_init(pathconf->fattr); |
1da177e4 LT |
2417 | return rpc_call_sync(server->client, &msg, 0); |
2418 | } | |
2419 | ||
2420 | static int nfs4_proc_pathconf(struct nfs_server *server, struct nfs_fh *fhandle, | |
2421 | struct nfs_pathconf *pathconf) | |
2422 | { | |
2423 | struct nfs4_exception exception = { }; | |
2424 | int err; | |
2425 | ||
2426 | do { | |
2427 | err = nfs4_handle_exception(server, | |
2428 | _nfs4_proc_pathconf(server, fhandle, pathconf), | |
2429 | &exception); | |
2430 | } while (exception.retry); | |
2431 | return err; | |
2432 | } | |
2433 | ||
ec06c096 | 2434 | static int nfs4_read_done(struct rpc_task *task, struct nfs_read_data *data) |
1da177e4 | 2435 | { |
ec06c096 | 2436 | struct nfs_server *server = NFS_SERVER(data->inode); |
1da177e4 | 2437 | |
ec06c096 | 2438 | if (nfs4_async_handle_error(task, server) == -EAGAIN) { |
1da177e4 | 2439 | rpc_restart_call(task); |
ec06c096 | 2440 | return -EAGAIN; |
1da177e4 LT |
2441 | } |
2442 | if (task->tk_status > 0) | |
ec06c096 TM |
2443 | renew_lease(server, data->timestamp); |
2444 | return 0; | |
1da177e4 LT |
2445 | } |
2446 | ||
ec06c096 | 2447 | static void nfs4_proc_read_setup(struct nfs_read_data *data) |
1da177e4 | 2448 | { |
1da177e4 LT |
2449 | struct rpc_message msg = { |
2450 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_READ], | |
2451 | .rpc_argp = &data->args, | |
2452 | .rpc_resp = &data->res, | |
2453 | .rpc_cred = data->cred, | |
2454 | }; | |
1da177e4 LT |
2455 | |
2456 | data->timestamp = jiffies; | |
2457 | ||
ec06c096 | 2458 | rpc_call_setup(&data->task, &msg, 0); |
1da177e4 LT |
2459 | } |
2460 | ||
788e7a89 | 2461 | static int nfs4_write_done(struct rpc_task *task, struct nfs_write_data *data) |
1da177e4 | 2462 | { |
1da177e4 LT |
2463 | struct inode *inode = data->inode; |
2464 | ||
2465 | if (nfs4_async_handle_error(task, NFS_SERVER(inode)) == -EAGAIN) { | |
2466 | rpc_restart_call(task); | |
788e7a89 | 2467 | return -EAGAIN; |
1da177e4 | 2468 | } |
4f9838c7 | 2469 | if (task->tk_status >= 0) { |
1da177e4 | 2470 | renew_lease(NFS_SERVER(inode), data->timestamp); |
4f9838c7 TM |
2471 | nfs_post_op_update_inode(inode, data->res.fattr); |
2472 | } | |
788e7a89 | 2473 | return 0; |
1da177e4 LT |
2474 | } |
2475 | ||
788e7a89 | 2476 | static void nfs4_proc_write_setup(struct nfs_write_data *data, int how) |
1da177e4 | 2477 | { |
1da177e4 LT |
2478 | struct rpc_message msg = { |
2479 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_WRITE], | |
2480 | .rpc_argp = &data->args, | |
2481 | .rpc_resp = &data->res, | |
2482 | .rpc_cred = data->cred, | |
2483 | }; | |
2484 | struct inode *inode = data->inode; | |
4f9838c7 | 2485 | struct nfs_server *server = NFS_SERVER(inode); |
1da177e4 | 2486 | int stable; |
1da177e4 LT |
2487 | |
2488 | if (how & FLUSH_STABLE) { | |
2489 | if (!NFS_I(inode)->ncommit) | |
2490 | stable = NFS_FILE_SYNC; | |
2491 | else | |
2492 | stable = NFS_DATA_SYNC; | |
2493 | } else | |
2494 | stable = NFS_UNSTABLE; | |
2495 | data->args.stable = stable; | |
4f9838c7 TM |
2496 | data->args.bitmask = server->attr_bitmask; |
2497 | data->res.server = server; | |
1da177e4 LT |
2498 | |
2499 | data->timestamp = jiffies; | |
2500 | ||
1da177e4 | 2501 | /* Finalize the task. */ |
788e7a89 | 2502 | rpc_call_setup(&data->task, &msg, 0); |
1da177e4 LT |
2503 | } |
2504 | ||
788e7a89 | 2505 | static int nfs4_commit_done(struct rpc_task *task, struct nfs_write_data *data) |
1da177e4 | 2506 | { |
1da177e4 LT |
2507 | struct inode *inode = data->inode; |
2508 | ||
2509 | if (nfs4_async_handle_error(task, NFS_SERVER(inode)) == -EAGAIN) { | |
2510 | rpc_restart_call(task); | |
788e7a89 | 2511 | return -EAGAIN; |
1da177e4 | 2512 | } |
4f9838c7 TM |
2513 | if (task->tk_status >= 0) |
2514 | nfs_post_op_update_inode(inode, data->res.fattr); | |
788e7a89 | 2515 | return 0; |
1da177e4 LT |
2516 | } |
2517 | ||
788e7a89 | 2518 | static void nfs4_proc_commit_setup(struct nfs_write_data *data, int how) |
1da177e4 | 2519 | { |
1da177e4 LT |
2520 | struct rpc_message msg = { |
2521 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_COMMIT], | |
2522 | .rpc_argp = &data->args, | |
2523 | .rpc_resp = &data->res, | |
2524 | .rpc_cred = data->cred, | |
2525 | }; | |
788e7a89 | 2526 | struct nfs_server *server = NFS_SERVER(data->inode); |
1da177e4 | 2527 | |
4f9838c7 TM |
2528 | data->args.bitmask = server->attr_bitmask; |
2529 | data->res.server = server; | |
2530 | ||
788e7a89 | 2531 | rpc_call_setup(&data->task, &msg, 0); |
1da177e4 LT |
2532 | } |
2533 | ||
2534 | /* | |
2535 | * nfs4_proc_async_renew(): This is not one of the nfs_rpc_ops; it is a special | |
2536 | * standalone procedure for queueing an asynchronous RENEW. | |
2537 | */ | |
963d8fe5 | 2538 | static void nfs4_renew_done(struct rpc_task *task, void *data) |
1da177e4 | 2539 | { |
adfa6f98 | 2540 | struct nfs_client *clp = (struct nfs_client *)task->tk_msg.rpc_argp; |
963d8fe5 | 2541 | unsigned long timestamp = (unsigned long)data; |
1da177e4 LT |
2542 | |
2543 | if (task->tk_status < 0) { | |
2544 | switch (task->tk_status) { | |
2545 | case -NFS4ERR_STALE_CLIENTID: | |
2546 | case -NFS4ERR_EXPIRED: | |
2547 | case -NFS4ERR_CB_PATH_DOWN: | |
2548 | nfs4_schedule_state_recovery(clp); | |
2549 | } | |
2550 | return; | |
2551 | } | |
2552 | spin_lock(&clp->cl_lock); | |
2553 | if (time_before(clp->cl_last_renewal,timestamp)) | |
2554 | clp->cl_last_renewal = timestamp; | |
2555 | spin_unlock(&clp->cl_lock); | |
2556 | } | |
2557 | ||
963d8fe5 TM |
2558 | static const struct rpc_call_ops nfs4_renew_ops = { |
2559 | .rpc_call_done = nfs4_renew_done, | |
2560 | }; | |
2561 | ||
adfa6f98 | 2562 | int nfs4_proc_async_renew(struct nfs_client *clp, struct rpc_cred *cred) |
1da177e4 LT |
2563 | { |
2564 | struct rpc_message msg = { | |
2565 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RENEW], | |
2566 | .rpc_argp = clp, | |
b4454fe1 | 2567 | .rpc_cred = cred, |
1da177e4 LT |
2568 | }; |
2569 | ||
2570 | return rpc_call_async(clp->cl_rpcclient, &msg, RPC_TASK_SOFT, | |
963d8fe5 | 2571 | &nfs4_renew_ops, (void *)jiffies); |
1da177e4 LT |
2572 | } |
2573 | ||
adfa6f98 | 2574 | int nfs4_proc_renew(struct nfs_client *clp, struct rpc_cred *cred) |
1da177e4 LT |
2575 | { |
2576 | struct rpc_message msg = { | |
2577 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RENEW], | |
2578 | .rpc_argp = clp, | |
b4454fe1 | 2579 | .rpc_cred = cred, |
1da177e4 LT |
2580 | }; |
2581 | unsigned long now = jiffies; | |
2582 | int status; | |
2583 | ||
2584 | status = rpc_call_sync(clp->cl_rpcclient, &msg, 0); | |
2585 | if (status < 0) | |
2586 | return status; | |
2587 | spin_lock(&clp->cl_lock); | |
2588 | if (time_before(clp->cl_last_renewal,now)) | |
2589 | clp->cl_last_renewal = now; | |
2590 | spin_unlock(&clp->cl_lock); | |
2591 | return 0; | |
2592 | } | |
2593 | ||
aa1870af BF |
2594 | static inline int nfs4_server_supports_acls(struct nfs_server *server) |
2595 | { | |
2596 | return (server->caps & NFS_CAP_ACLS) | |
2597 | && (server->acl_bitmask & ACL4_SUPPORT_ALLOW_ACL) | |
2598 | && (server->acl_bitmask & ACL4_SUPPORT_DENY_ACL); | |
2599 | } | |
2600 | ||
2601 | /* Assuming that XATTR_SIZE_MAX is a multiple of PAGE_CACHE_SIZE, and that | |
2602 | * it's OK to put sizeof(void) * (XATTR_SIZE_MAX/PAGE_CACHE_SIZE) bytes on | |
2603 | * the stack. | |
2604 | */ | |
2605 | #define NFS4ACL_MAXPAGES (XATTR_SIZE_MAX >> PAGE_CACHE_SHIFT) | |
2606 | ||
2607 | static void buf_to_pages(const void *buf, size_t buflen, | |
2608 | struct page **pages, unsigned int *pgbase) | |
2609 | { | |
2610 | const void *p = buf; | |
2611 | ||
2612 | *pgbase = offset_in_page(buf); | |
2613 | p -= *pgbase; | |
2614 | while (p < buf + buflen) { | |
2615 | *(pages++) = virt_to_page(p); | |
2616 | p += PAGE_CACHE_SIZE; | |
2617 | } | |
2618 | } | |
2619 | ||
e50a1c2e BF |
2620 | struct nfs4_cached_acl { |
2621 | int cached; | |
2622 | size_t len; | |
3e9d4154 | 2623 | char data[0]; |
e50a1c2e BF |
2624 | }; |
2625 | ||
2626 | static void nfs4_set_cached_acl(struct inode *inode, struct nfs4_cached_acl *acl) | |
2627 | { | |
2628 | struct nfs_inode *nfsi = NFS_I(inode); | |
2629 | ||
2630 | spin_lock(&inode->i_lock); | |
2631 | kfree(nfsi->nfs4_acl); | |
2632 | nfsi->nfs4_acl = acl; | |
2633 | spin_unlock(&inode->i_lock); | |
2634 | } | |
2635 | ||
2636 | static void nfs4_zap_acl_attr(struct inode *inode) | |
2637 | { | |
2638 | nfs4_set_cached_acl(inode, NULL); | |
2639 | } | |
2640 | ||
2641 | static inline ssize_t nfs4_read_cached_acl(struct inode *inode, char *buf, size_t buflen) | |
2642 | { | |
2643 | struct nfs_inode *nfsi = NFS_I(inode); | |
2644 | struct nfs4_cached_acl *acl; | |
2645 | int ret = -ENOENT; | |
2646 | ||
2647 | spin_lock(&inode->i_lock); | |
2648 | acl = nfsi->nfs4_acl; | |
2649 | if (acl == NULL) | |
2650 | goto out; | |
2651 | if (buf == NULL) /* user is just asking for length */ | |
2652 | goto out_len; | |
2653 | if (acl->cached == 0) | |
2654 | goto out; | |
2655 | ret = -ERANGE; /* see getxattr(2) man page */ | |
2656 | if (acl->len > buflen) | |
2657 | goto out; | |
2658 | memcpy(buf, acl->data, acl->len); | |
2659 | out_len: | |
2660 | ret = acl->len; | |
2661 | out: | |
2662 | spin_unlock(&inode->i_lock); | |
2663 | return ret; | |
2664 | } | |
2665 | ||
2666 | static void nfs4_write_cached_acl(struct inode *inode, const char *buf, size_t acl_len) | |
2667 | { | |
2668 | struct nfs4_cached_acl *acl; | |
2669 | ||
2670 | if (buf && acl_len <= PAGE_SIZE) { | |
2671 | acl = kmalloc(sizeof(*acl) + acl_len, GFP_KERNEL); | |
2672 | if (acl == NULL) | |
2673 | goto out; | |
2674 | acl->cached = 1; | |
2675 | memcpy(acl->data, buf, acl_len); | |
2676 | } else { | |
2677 | acl = kmalloc(sizeof(*acl), GFP_KERNEL); | |
2678 | if (acl == NULL) | |
2679 | goto out; | |
2680 | acl->cached = 0; | |
2681 | } | |
2682 | acl->len = acl_len; | |
2683 | out: | |
2684 | nfs4_set_cached_acl(inode, acl); | |
2685 | } | |
2686 | ||
16b4289c | 2687 | static ssize_t __nfs4_get_acl_uncached(struct inode *inode, void *buf, size_t buflen) |
aa1870af | 2688 | { |
aa1870af BF |
2689 | struct page *pages[NFS4ACL_MAXPAGES]; |
2690 | struct nfs_getaclargs args = { | |
2691 | .fh = NFS_FH(inode), | |
2692 | .acl_pages = pages, | |
2693 | .acl_len = buflen, | |
2694 | }; | |
2695 | size_t resp_len = buflen; | |
e50a1c2e | 2696 | void *resp_buf; |
aa1870af BF |
2697 | struct rpc_message msg = { |
2698 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GETACL], | |
2699 | .rpc_argp = &args, | |
2700 | .rpc_resp = &resp_len, | |
2701 | }; | |
e50a1c2e | 2702 | struct page *localpage = NULL; |
aa1870af BF |
2703 | int ret; |
2704 | ||
e50a1c2e BF |
2705 | if (buflen < PAGE_SIZE) { |
2706 | /* As long as we're doing a round trip to the server anyway, | |
2707 | * let's be prepared for a page of acl data. */ | |
2708 | localpage = alloc_page(GFP_KERNEL); | |
2709 | resp_buf = page_address(localpage); | |
2710 | if (localpage == NULL) | |
2711 | return -ENOMEM; | |
2712 | args.acl_pages[0] = localpage; | |
2713 | args.acl_pgbase = 0; | |
1d95db8e | 2714 | resp_len = args.acl_len = PAGE_SIZE; |
e50a1c2e BF |
2715 | } else { |
2716 | resp_buf = buf; | |
2717 | buf_to_pages(buf, buflen, args.acl_pages, &args.acl_pgbase); | |
2718 | } | |
aa1870af | 2719 | ret = rpc_call_sync(NFS_CLIENT(inode), &msg, 0); |
e50a1c2e BF |
2720 | if (ret) |
2721 | goto out_free; | |
2722 | if (resp_len > args.acl_len) | |
2723 | nfs4_write_cached_acl(inode, NULL, resp_len); | |
2724 | else | |
2725 | nfs4_write_cached_acl(inode, resp_buf, resp_len); | |
2726 | if (buf) { | |
2727 | ret = -ERANGE; | |
2728 | if (resp_len > buflen) | |
2729 | goto out_free; | |
2730 | if (localpage) | |
2731 | memcpy(buf, resp_buf, resp_len); | |
2732 | } | |
2733 | ret = resp_len; | |
2734 | out_free: | |
2735 | if (localpage) | |
2736 | __free_page(localpage); | |
aa1870af BF |
2737 | return ret; |
2738 | } | |
2739 | ||
16b4289c TM |
2740 | static ssize_t nfs4_get_acl_uncached(struct inode *inode, void *buf, size_t buflen) |
2741 | { | |
2742 | struct nfs4_exception exception = { }; | |
2743 | ssize_t ret; | |
2744 | do { | |
2745 | ret = __nfs4_get_acl_uncached(inode, buf, buflen); | |
2746 | if (ret >= 0) | |
2747 | break; | |
2748 | ret = nfs4_handle_exception(NFS_SERVER(inode), ret, &exception); | |
2749 | } while (exception.retry); | |
2750 | return ret; | |
2751 | } | |
2752 | ||
e50a1c2e BF |
2753 | static ssize_t nfs4_proc_get_acl(struct inode *inode, void *buf, size_t buflen) |
2754 | { | |
2755 | struct nfs_server *server = NFS_SERVER(inode); | |
2756 | int ret; | |
2757 | ||
2758 | if (!nfs4_server_supports_acls(server)) | |
2759 | return -EOPNOTSUPP; | |
2760 | ret = nfs_revalidate_inode(server, inode); | |
2761 | if (ret < 0) | |
2762 | return ret; | |
2763 | ret = nfs4_read_cached_acl(inode, buf, buflen); | |
2764 | if (ret != -ENOENT) | |
2765 | return ret; | |
2766 | return nfs4_get_acl_uncached(inode, buf, buflen); | |
2767 | } | |
2768 | ||
16b4289c | 2769 | static int __nfs4_proc_set_acl(struct inode *inode, const void *buf, size_t buflen) |
4b580ee3 BF |
2770 | { |
2771 | struct nfs_server *server = NFS_SERVER(inode); | |
2772 | struct page *pages[NFS4ACL_MAXPAGES]; | |
2773 | struct nfs_setaclargs arg = { | |
2774 | .fh = NFS_FH(inode), | |
2775 | .acl_pages = pages, | |
2776 | .acl_len = buflen, | |
2777 | }; | |
2778 | struct rpc_message msg = { | |
2779 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SETACL], | |
2780 | .rpc_argp = &arg, | |
2781 | .rpc_resp = NULL, | |
2782 | }; | |
2783 | int ret; | |
2784 | ||
2785 | if (!nfs4_server_supports_acls(server)) | |
2786 | return -EOPNOTSUPP; | |
642ac549 | 2787 | nfs_inode_return_delegation(inode); |
4b580ee3 | 2788 | buf_to_pages(buf, buflen, arg.acl_pages, &arg.acl_pgbase); |
1f163415 | 2789 | ret = rpc_call_sync(NFS_CLIENT(inode), &msg, 0); |
08efa202 | 2790 | nfs_zap_caches(inode); |
4b580ee3 BF |
2791 | return ret; |
2792 | } | |
2793 | ||
16b4289c TM |
2794 | static int nfs4_proc_set_acl(struct inode *inode, const void *buf, size_t buflen) |
2795 | { | |
2796 | struct nfs4_exception exception = { }; | |
2797 | int err; | |
2798 | do { | |
2799 | err = nfs4_handle_exception(NFS_SERVER(inode), | |
2800 | __nfs4_proc_set_acl(inode, buf, buflen), | |
2801 | &exception); | |
2802 | } while (exception.retry); | |
2803 | return err; | |
2804 | } | |
2805 | ||
1da177e4 | 2806 | static int |
faf5f49c | 2807 | nfs4_async_handle_error(struct rpc_task *task, const struct nfs_server *server) |
1da177e4 | 2808 | { |
7539bbab | 2809 | struct nfs_client *clp = server->nfs_client; |
1da177e4 LT |
2810 | |
2811 | if (!clp || task->tk_status >= 0) | |
2812 | return 0; | |
2813 | switch(task->tk_status) { | |
2814 | case -NFS4ERR_STALE_CLIENTID: | |
2815 | case -NFS4ERR_STALE_STATEID: | |
2816 | case -NFS4ERR_EXPIRED: | |
2817 | rpc_sleep_on(&clp->cl_rpcwaitq, task, NULL, NULL); | |
2818 | nfs4_schedule_state_recovery(clp); | |
433fbe4c | 2819 | if (test_bit(NFS4CLNT_STATE_RECOVER, &clp->cl_state) == 0) |
1da177e4 LT |
2820 | rpc_wake_up_task(task); |
2821 | task->tk_status = 0; | |
2822 | return -EAGAIN; | |
1da177e4 | 2823 | case -NFS4ERR_DELAY: |
006ea73e CL |
2824 | nfs_inc_server_stats((struct nfs_server *) server, |
2825 | NFSIOS_DELAY); | |
2826 | case -NFS4ERR_GRACE: | |
1da177e4 LT |
2827 | rpc_delay(task, NFS4_POLL_RETRY_MAX); |
2828 | task->tk_status = 0; | |
2829 | return -EAGAIN; | |
2830 | case -NFS4ERR_OLD_STATEID: | |
2831 | task->tk_status = 0; | |
2832 | return -EAGAIN; | |
2833 | } | |
2834 | task->tk_status = nfs4_map_errors(task->tk_status); | |
2835 | return 0; | |
2836 | } | |
2837 | ||
433fbe4c TM |
2838 | static int nfs4_wait_bit_interruptible(void *word) |
2839 | { | |
2840 | if (signal_pending(current)) | |
2841 | return -ERESTARTSYS; | |
2842 | schedule(); | |
2843 | return 0; | |
2844 | } | |
2845 | ||
adfa6f98 | 2846 | static int nfs4_wait_clnt_recover(struct rpc_clnt *clnt, struct nfs_client *clp) |
1da177e4 | 2847 | { |
1da177e4 | 2848 | sigset_t oldset; |
433fbe4c | 2849 | int res; |
1da177e4 LT |
2850 | |
2851 | might_sleep(); | |
2852 | ||
e148582e TM |
2853 | rwsem_acquire(&clp->cl_sem.dep_map, 0, 0, _RET_IP_); |
2854 | ||
1da177e4 | 2855 | rpc_clnt_sigmask(clnt, &oldset); |
433fbe4c TM |
2856 | res = wait_on_bit(&clp->cl_state, NFS4CLNT_STATE_RECOVER, |
2857 | nfs4_wait_bit_interruptible, | |
2858 | TASK_INTERRUPTIBLE); | |
1da177e4 | 2859 | rpc_clnt_sigunmask(clnt, &oldset); |
e148582e TM |
2860 | |
2861 | rwsem_release(&clp->cl_sem.dep_map, 1, _RET_IP_); | |
1da177e4 LT |
2862 | return res; |
2863 | } | |
2864 | ||
2865 | static int nfs4_delay(struct rpc_clnt *clnt, long *timeout) | |
2866 | { | |
2867 | sigset_t oldset; | |
2868 | int res = 0; | |
2869 | ||
2870 | might_sleep(); | |
2871 | ||
2872 | if (*timeout <= 0) | |
2873 | *timeout = NFS4_POLL_RETRY_MIN; | |
2874 | if (*timeout > NFS4_POLL_RETRY_MAX) | |
2875 | *timeout = NFS4_POLL_RETRY_MAX; | |
2876 | rpc_clnt_sigmask(clnt, &oldset); | |
2877 | if (clnt->cl_intr) { | |
041e0e3b | 2878 | schedule_timeout_interruptible(*timeout); |
1da177e4 LT |
2879 | if (signalled()) |
2880 | res = -ERESTARTSYS; | |
041e0e3b NA |
2881 | } else |
2882 | schedule_timeout_uninterruptible(*timeout); | |
1da177e4 LT |
2883 | rpc_clnt_sigunmask(clnt, &oldset); |
2884 | *timeout <<= 1; | |
2885 | return res; | |
2886 | } | |
2887 | ||
2888 | /* This is the error handling routine for processes that are allowed | |
2889 | * to sleep. | |
2890 | */ | |
10afec90 | 2891 | static int nfs4_handle_exception(const struct nfs_server *server, int errorcode, struct nfs4_exception *exception) |
1da177e4 | 2892 | { |
7539bbab | 2893 | struct nfs_client *clp = server->nfs_client; |
1da177e4 LT |
2894 | int ret = errorcode; |
2895 | ||
2896 | exception->retry = 0; | |
2897 | switch(errorcode) { | |
2898 | case 0: | |
2899 | return 0; | |
2900 | case -NFS4ERR_STALE_CLIENTID: | |
2901 | case -NFS4ERR_STALE_STATEID: | |
2902 | case -NFS4ERR_EXPIRED: | |
433fbe4c | 2903 | nfs4_schedule_state_recovery(clp); |
1da177e4 LT |
2904 | ret = nfs4_wait_clnt_recover(server->client, clp); |
2905 | if (ret == 0) | |
2906 | exception->retry = 1; | |
2907 | break; | |
c514983d | 2908 | case -NFS4ERR_FILE_OPEN: |
1da177e4 LT |
2909 | case -NFS4ERR_GRACE: |
2910 | case -NFS4ERR_DELAY: | |
2911 | ret = nfs4_delay(server->client, &exception->timeout); | |
2c56617d TM |
2912 | if (ret != 0) |
2913 | break; | |
1da177e4 | 2914 | case -NFS4ERR_OLD_STATEID: |
2c56617d | 2915 | exception->retry = 1; |
1da177e4 LT |
2916 | } |
2917 | /* We failed to handle the error */ | |
2918 | return nfs4_map_errors(ret); | |
2919 | } | |
2920 | ||
adfa6f98 | 2921 | int nfs4_proc_setclientid(struct nfs_client *clp, u32 program, unsigned short port, struct rpc_cred *cred) |
1da177e4 LT |
2922 | { |
2923 | nfs4_verifier sc_verifier; | |
2924 | struct nfs4_setclientid setclientid = { | |
2925 | .sc_verifier = &sc_verifier, | |
2926 | .sc_prog = program, | |
2927 | }; | |
2928 | struct rpc_message msg = { | |
2929 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SETCLIENTID], | |
2930 | .rpc_argp = &setclientid, | |
2931 | .rpc_resp = clp, | |
286d7d6a | 2932 | .rpc_cred = cred, |
1da177e4 | 2933 | }; |
bc4785cd | 2934 | __be32 *p; |
1da177e4 LT |
2935 | int loop = 0; |
2936 | int status; | |
2937 | ||
bc4785cd | 2938 | p = (__be32*)sc_verifier.data; |
1da177e4 LT |
2939 | *p++ = htonl((u32)clp->cl_boot_time.tv_sec); |
2940 | *p = htonl((u32)clp->cl_boot_time.tv_nsec); | |
2941 | ||
2942 | for(;;) { | |
2943 | setclientid.sc_name_len = scnprintf(setclientid.sc_name, | |
2944 | sizeof(setclientid.sc_name), "%s/%u.%u.%u.%u %s %u", | |
24c8dbbb | 2945 | clp->cl_ipaddr, NIPQUAD(clp->cl_addr.sin_addr), |
286d7d6a | 2946 | cred->cr_ops->cr_name, |
1da177e4 LT |
2947 | clp->cl_id_uniquifier); |
2948 | setclientid.sc_netid_len = scnprintf(setclientid.sc_netid, | |
2949 | sizeof(setclientid.sc_netid), "tcp"); | |
2950 | setclientid.sc_uaddr_len = scnprintf(setclientid.sc_uaddr, | |
2951 | sizeof(setclientid.sc_uaddr), "%s.%d.%d", | |
2952 | clp->cl_ipaddr, port >> 8, port & 255); | |
2953 | ||
2954 | status = rpc_call_sync(clp->cl_rpcclient, &msg, 0); | |
2955 | if (status != -NFS4ERR_CLID_INUSE) | |
2956 | break; | |
2957 | if (signalled()) | |
2958 | break; | |
2959 | if (loop++ & 1) | |
2960 | ssleep(clp->cl_lease_time + 1); | |
2961 | else | |
2962 | if (++clp->cl_id_uniquifier == 0) | |
2963 | break; | |
2964 | } | |
2965 | return status; | |
2966 | } | |
2967 | ||
adfa6f98 | 2968 | static int _nfs4_proc_setclientid_confirm(struct nfs_client *clp, struct rpc_cred *cred) |
1da177e4 LT |
2969 | { |
2970 | struct nfs_fsinfo fsinfo; | |
2971 | struct rpc_message msg = { | |
2972 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SETCLIENTID_CONFIRM], | |
2973 | .rpc_argp = clp, | |
2974 | .rpc_resp = &fsinfo, | |
286d7d6a | 2975 | .rpc_cred = cred, |
1da177e4 LT |
2976 | }; |
2977 | unsigned long now; | |
2978 | int status; | |
2979 | ||
2980 | now = jiffies; | |
2981 | status = rpc_call_sync(clp->cl_rpcclient, &msg, 0); | |
2982 | if (status == 0) { | |
2983 | spin_lock(&clp->cl_lock); | |
2984 | clp->cl_lease_time = fsinfo.lease_time * HZ; | |
2985 | clp->cl_last_renewal = now; | |
58d9714a | 2986 | clear_bit(NFS4CLNT_LEASE_EXPIRED, &clp->cl_state); |
1da177e4 LT |
2987 | spin_unlock(&clp->cl_lock); |
2988 | } | |
2989 | return status; | |
2990 | } | |
2991 | ||
adfa6f98 | 2992 | int nfs4_proc_setclientid_confirm(struct nfs_client *clp, struct rpc_cred *cred) |
51581f3b TM |
2993 | { |
2994 | long timeout; | |
2995 | int err; | |
2996 | do { | |
2997 | err = _nfs4_proc_setclientid_confirm(clp, cred); | |
2998 | switch (err) { | |
2999 | case 0: | |
3000 | return err; | |
3001 | case -NFS4ERR_RESOURCE: | |
3002 | /* The IBM lawyers misread another document! */ | |
3003 | case -NFS4ERR_DELAY: | |
3004 | err = nfs4_delay(clp->cl_rpcclient, &timeout); | |
3005 | } | |
3006 | } while (err == 0); | |
3007 | return err; | |
3008 | } | |
3009 | ||
fe650407 TM |
3010 | struct nfs4_delegreturndata { |
3011 | struct nfs4_delegreturnargs args; | |
fa178f29 | 3012 | struct nfs4_delegreturnres res; |
fe650407 TM |
3013 | struct nfs_fh fh; |
3014 | nfs4_stateid stateid; | |
3015 | struct rpc_cred *cred; | |
26e976a8 | 3016 | unsigned long timestamp; |
fa178f29 | 3017 | struct nfs_fattr fattr; |
fe650407 TM |
3018 | int rpc_status; |
3019 | }; | |
3020 | ||
3021 | static void nfs4_delegreturn_prepare(struct rpc_task *task, void *calldata) | |
1da177e4 | 3022 | { |
fe650407 | 3023 | struct nfs4_delegreturndata *data = calldata; |
1da177e4 LT |
3024 | struct rpc_message msg = { |
3025 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_DELEGRETURN], | |
fe650407 | 3026 | .rpc_argp = &data->args, |
fa178f29 | 3027 | .rpc_resp = &data->res, |
fe650407 | 3028 | .rpc_cred = data->cred, |
1da177e4 | 3029 | }; |
fa178f29 | 3030 | nfs_fattr_init(data->res.fattr); |
fe650407 TM |
3031 | rpc_call_setup(task, &msg, 0); |
3032 | } | |
1da177e4 | 3033 | |
fe650407 TM |
3034 | static void nfs4_delegreturn_done(struct rpc_task *task, void *calldata) |
3035 | { | |
3036 | struct nfs4_delegreturndata *data = calldata; | |
3037 | data->rpc_status = task->tk_status; | |
26e976a8 | 3038 | if (data->rpc_status == 0) |
fa178f29 | 3039 | renew_lease(data->res.server, data->timestamp); |
fe650407 TM |
3040 | } |
3041 | ||
3042 | static void nfs4_delegreturn_release(void *calldata) | |
3043 | { | |
3044 | struct nfs4_delegreturndata *data = calldata; | |
3045 | ||
3046 | put_rpccred(data->cred); | |
3047 | kfree(calldata); | |
3048 | } | |
3049 | ||
c8d149f3 | 3050 | static const struct rpc_call_ops nfs4_delegreturn_ops = { |
fe650407 TM |
3051 | .rpc_call_prepare = nfs4_delegreturn_prepare, |
3052 | .rpc_call_done = nfs4_delegreturn_done, | |
3053 | .rpc_release = nfs4_delegreturn_release, | |
3054 | }; | |
3055 | ||
3056 | static int _nfs4_proc_delegreturn(struct inode *inode, struct rpc_cred *cred, const nfs4_stateid *stateid) | |
3057 | { | |
3058 | struct nfs4_delegreturndata *data; | |
fa178f29 | 3059 | struct nfs_server *server = NFS_SERVER(inode); |
fe650407 TM |
3060 | struct rpc_task *task; |
3061 | int status; | |
3062 | ||
3063 | data = kmalloc(sizeof(*data), GFP_KERNEL); | |
3064 | if (data == NULL) | |
3065 | return -ENOMEM; | |
3066 | data->args.fhandle = &data->fh; | |
3067 | data->args.stateid = &data->stateid; | |
fa178f29 | 3068 | data->args.bitmask = server->attr_bitmask; |
fe650407 TM |
3069 | nfs_copy_fh(&data->fh, NFS_FH(inode)); |
3070 | memcpy(&data->stateid, stateid, sizeof(data->stateid)); | |
fa178f29 TM |
3071 | data->res.fattr = &data->fattr; |
3072 | data->res.server = server; | |
fe650407 | 3073 | data->cred = get_rpccred(cred); |
26e976a8 | 3074 | data->timestamp = jiffies; |
fe650407 TM |
3075 | data->rpc_status = 0; |
3076 | ||
3077 | task = rpc_run_task(NFS_CLIENT(inode), RPC_TASK_ASYNC, &nfs4_delegreturn_ops, data); | |
7a1218a2 | 3078 | if (IS_ERR(task)) |
fe650407 | 3079 | return PTR_ERR(task); |
fe650407 | 3080 | status = nfs4_wait_for_completion_rpc_task(task); |
fa178f29 | 3081 | if (status == 0) { |
fe650407 | 3082 | status = data->rpc_status; |
fa178f29 TM |
3083 | if (status == 0) |
3084 | nfs_post_op_update_inode(inode, &data->fattr); | |
3085 | } | |
e6b3c4db | 3086 | rpc_put_task(task); |
fe650407 | 3087 | return status; |
1da177e4 LT |
3088 | } |
3089 | ||
3090 | int nfs4_proc_delegreturn(struct inode *inode, struct rpc_cred *cred, const nfs4_stateid *stateid) | |
3091 | { | |
3092 | struct nfs_server *server = NFS_SERVER(inode); | |
3093 | struct nfs4_exception exception = { }; | |
3094 | int err; | |
3095 | do { | |
3096 | err = _nfs4_proc_delegreturn(inode, cred, stateid); | |
3097 | switch (err) { | |
3098 | case -NFS4ERR_STALE_STATEID: | |
3099 | case -NFS4ERR_EXPIRED: | |
1da177e4 LT |
3100 | case 0: |
3101 | return 0; | |
3102 | } | |
3103 | err = nfs4_handle_exception(server, err, &exception); | |
3104 | } while (exception.retry); | |
3105 | return err; | |
3106 | } | |
3107 | ||
3108 | #define NFS4_LOCK_MINTIMEOUT (1 * HZ) | |
3109 | #define NFS4_LOCK_MAXTIMEOUT (30 * HZ) | |
3110 | ||
3111 | /* | |
3112 | * sleep, with exponential backoff, and retry the LOCK operation. | |
3113 | */ | |
3114 | static unsigned long | |
3115 | nfs4_set_lock_task_retry(unsigned long timeout) | |
3116 | { | |
041e0e3b | 3117 | schedule_timeout_interruptible(timeout); |
1da177e4 LT |
3118 | timeout <<= 1; |
3119 | if (timeout > NFS4_LOCK_MAXTIMEOUT) | |
3120 | return NFS4_LOCK_MAXTIMEOUT; | |
3121 | return timeout; | |
3122 | } | |
3123 | ||
1da177e4 LT |
3124 | static int _nfs4_proc_getlk(struct nfs4_state *state, int cmd, struct file_lock *request) |
3125 | { | |
3126 | struct inode *inode = state->inode; | |
3127 | struct nfs_server *server = NFS_SERVER(inode); | |
7539bbab | 3128 | struct nfs_client *clp = server->nfs_client; |
911d1aaf | 3129 | struct nfs_lockt_args arg = { |
1da177e4 | 3130 | .fh = NFS_FH(inode), |
911d1aaf | 3131 | .fl = request, |
1da177e4 | 3132 | }; |
911d1aaf TM |
3133 | struct nfs_lockt_res res = { |
3134 | .denied = request, | |
1da177e4 LT |
3135 | }; |
3136 | struct rpc_message msg = { | |
3137 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOCKT], | |
3138 | .rpc_argp = &arg, | |
3139 | .rpc_resp = &res, | |
3140 | .rpc_cred = state->owner->so_cred, | |
3141 | }; | |
1da177e4 LT |
3142 | struct nfs4_lock_state *lsp; |
3143 | int status; | |
3144 | ||
3145 | down_read(&clp->cl_sem); | |
911d1aaf | 3146 | arg.lock_owner.clientid = clp->cl_clientid; |
8d0a8a9d TM |
3147 | status = nfs4_set_lock_state(state, request); |
3148 | if (status != 0) | |
3149 | goto out; | |
3150 | lsp = request->fl_u.nfs4_fl.owner; | |
9f958ab8 | 3151 | arg.lock_owner.id = lsp->ls_id.id; |
1da177e4 | 3152 | status = rpc_call_sync(server->client, &msg, 0); |
911d1aaf TM |
3153 | switch (status) { |
3154 | case 0: | |
3155 | request->fl_type = F_UNLCK; | |
3156 | break; | |
3157 | case -NFS4ERR_DENIED: | |
3158 | status = 0; | |
1da177e4 | 3159 | } |
70cc6487 | 3160 | request->fl_ops->fl_release_private(request); |
8d0a8a9d | 3161 | out: |
1da177e4 LT |
3162 | up_read(&clp->cl_sem); |
3163 | return status; | |
3164 | } | |
3165 | ||
3166 | static int nfs4_proc_getlk(struct nfs4_state *state, int cmd, struct file_lock *request) | |
3167 | { | |
3168 | struct nfs4_exception exception = { }; | |
3169 | int err; | |
3170 | ||
3171 | do { | |
3172 | err = nfs4_handle_exception(NFS_SERVER(state->inode), | |
3173 | _nfs4_proc_getlk(state, cmd, request), | |
3174 | &exception); | |
3175 | } while (exception.retry); | |
3176 | return err; | |
3177 | } | |
3178 | ||
3179 | static int do_vfs_lock(struct file *file, struct file_lock *fl) | |
3180 | { | |
3181 | int res = 0; | |
3182 | switch (fl->fl_flags & (FL_POSIX|FL_FLOCK)) { | |
3183 | case FL_POSIX: | |
3184 | res = posix_lock_file_wait(file, fl); | |
3185 | break; | |
3186 | case FL_FLOCK: | |
3187 | res = flock_lock_file_wait(file, fl); | |
3188 | break; | |
3189 | default: | |
3190 | BUG(); | |
3191 | } | |
1da177e4 LT |
3192 | return res; |
3193 | } | |
3194 | ||
faf5f49c | 3195 | struct nfs4_unlockdata { |
911d1aaf TM |
3196 | struct nfs_locku_args arg; |
3197 | struct nfs_locku_res res; | |
faf5f49c TM |
3198 | struct nfs4_lock_state *lsp; |
3199 | struct nfs_open_context *ctx; | |
911d1aaf TM |
3200 | struct file_lock fl; |
3201 | const struct nfs_server *server; | |
26e976a8 | 3202 | unsigned long timestamp; |
faf5f49c TM |
3203 | }; |
3204 | ||
911d1aaf TM |
3205 | static struct nfs4_unlockdata *nfs4_alloc_unlockdata(struct file_lock *fl, |
3206 | struct nfs_open_context *ctx, | |
3207 | struct nfs4_lock_state *lsp, | |
3208 | struct nfs_seqid *seqid) | |
3209 | { | |
3210 | struct nfs4_unlockdata *p; | |
3211 | struct inode *inode = lsp->ls_state->inode; | |
3212 | ||
3213 | p = kmalloc(sizeof(*p), GFP_KERNEL); | |
3214 | if (p == NULL) | |
3215 | return NULL; | |
3216 | p->arg.fh = NFS_FH(inode); | |
3217 | p->arg.fl = &p->fl; | |
3218 | p->arg.seqid = seqid; | |
3219 | p->arg.stateid = &lsp->ls_stateid; | |
3220 | p->lsp = lsp; | |
3221 | atomic_inc(&lsp->ls_count); | |
3222 | /* Ensure we don't close file until we're done freeing locks! */ | |
3223 | p->ctx = get_nfs_open_context(ctx); | |
3224 | memcpy(&p->fl, fl, sizeof(p->fl)); | |
3225 | p->server = NFS_SERVER(inode); | |
3226 | return p; | |
3227 | } | |
3228 | ||
06f814a3 | 3229 | static void nfs4_locku_release_calldata(void *data) |
faf5f49c | 3230 | { |
963d8fe5 | 3231 | struct nfs4_unlockdata *calldata = data; |
911d1aaf | 3232 | nfs_free_seqid(calldata->arg.seqid); |
06f814a3 TM |
3233 | nfs4_put_lock_state(calldata->lsp); |
3234 | put_nfs_open_context(calldata->ctx); | |
3235 | kfree(calldata); | |
faf5f49c TM |
3236 | } |
3237 | ||
963d8fe5 | 3238 | static void nfs4_locku_done(struct rpc_task *task, void *data) |
faf5f49c | 3239 | { |
963d8fe5 | 3240 | struct nfs4_unlockdata *calldata = data; |
faf5f49c | 3241 | |
06f814a3 TM |
3242 | if (RPC_ASSASSINATED(task)) |
3243 | return; | |
911d1aaf | 3244 | nfs_increment_lock_seqid(task->tk_status, calldata->arg.seqid); |
faf5f49c TM |
3245 | switch (task->tk_status) { |
3246 | case 0: | |
3247 | memcpy(calldata->lsp->ls_stateid.data, | |
911d1aaf | 3248 | calldata->res.stateid.data, |
faf5f49c | 3249 | sizeof(calldata->lsp->ls_stateid.data)); |
26e976a8 | 3250 | renew_lease(calldata->server, calldata->timestamp); |
faf5f49c TM |
3251 | break; |
3252 | case -NFS4ERR_STALE_STATEID: | |
3253 | case -NFS4ERR_EXPIRED: | |
faf5f49c TM |
3254 | break; |
3255 | default: | |
a6a352e9 | 3256 | if (nfs4_async_handle_error(task, calldata->server) == -EAGAIN) |
faf5f49c | 3257 | rpc_restart_call(task); |
faf5f49c | 3258 | } |
faf5f49c TM |
3259 | } |
3260 | ||
4ce70ada | 3261 | static void nfs4_locku_prepare(struct rpc_task *task, void *data) |
faf5f49c | 3262 | { |
4ce70ada | 3263 | struct nfs4_unlockdata *calldata = data; |
1da177e4 LT |
3264 | struct rpc_message msg = { |
3265 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOCKU], | |
faf5f49c TM |
3266 | .rpc_argp = &calldata->arg, |
3267 | .rpc_resp = &calldata->res, | |
3268 | .rpc_cred = calldata->lsp->ls_state->owner->so_cred, | |
1da177e4 | 3269 | }; |
faf5f49c | 3270 | |
911d1aaf | 3271 | if (nfs_wait_on_sequence(calldata->arg.seqid, task) != 0) |
faf5f49c TM |
3272 | return; |
3273 | if ((calldata->lsp->ls_flags & NFS_LOCK_INITIALIZED) == 0) { | |
963d8fe5 TM |
3274 | /* Note: exit _without_ running nfs4_locku_done */ |
3275 | task->tk_action = NULL; | |
faf5f49c TM |
3276 | return; |
3277 | } | |
26e976a8 | 3278 | calldata->timestamp = jiffies; |
faf5f49c TM |
3279 | rpc_call_setup(task, &msg, 0); |
3280 | } | |
3281 | ||
963d8fe5 | 3282 | static const struct rpc_call_ops nfs4_locku_ops = { |
4ce70ada | 3283 | .rpc_call_prepare = nfs4_locku_prepare, |
963d8fe5 | 3284 | .rpc_call_done = nfs4_locku_done, |
06f814a3 | 3285 | .rpc_release = nfs4_locku_release_calldata, |
963d8fe5 TM |
3286 | }; |
3287 | ||
a5d16a4d TM |
3288 | static struct rpc_task *nfs4_do_unlck(struct file_lock *fl, |
3289 | struct nfs_open_context *ctx, | |
3290 | struct nfs4_lock_state *lsp, | |
3291 | struct nfs_seqid *seqid) | |
3292 | { | |
3293 | struct nfs4_unlockdata *data; | |
a5d16a4d | 3294 | |
137d6aca FF |
3295 | /* Ensure this is an unlock - when canceling a lock, the |
3296 | * canceled lock is passed in, and it won't be an unlock. | |
3297 | */ | |
3298 | fl->fl_type = F_UNLCK; | |
3299 | ||
a5d16a4d TM |
3300 | data = nfs4_alloc_unlockdata(fl, ctx, lsp, seqid); |
3301 | if (data == NULL) { | |
3302 | nfs_free_seqid(seqid); | |
3303 | return ERR_PTR(-ENOMEM); | |
3304 | } | |
3305 | ||
7a1218a2 | 3306 | return rpc_run_task(NFS_CLIENT(lsp->ls_state->inode), RPC_TASK_ASYNC, &nfs4_locku_ops, data); |
a5d16a4d TM |
3307 | } |
3308 | ||
faf5f49c TM |
3309 | static int nfs4_proc_unlck(struct nfs4_state *state, int cmd, struct file_lock *request) |
3310 | { | |
911d1aaf | 3311 | struct nfs_seqid *seqid; |
1da177e4 | 3312 | struct nfs4_lock_state *lsp; |
06f814a3 TM |
3313 | struct rpc_task *task; |
3314 | int status = 0; | |
faf5f49c | 3315 | |
8d0a8a9d | 3316 | status = nfs4_set_lock_state(state, request); |
9b073574 TM |
3317 | /* Unlock _before_ we do the RPC call */ |
3318 | request->fl_flags |= FL_EXISTS; | |
3319 | if (do_vfs_lock(request->fl_file, request) == -ENOENT) | |
3320 | goto out; | |
8d0a8a9d | 3321 | if (status != 0) |
9b073574 TM |
3322 | goto out; |
3323 | /* Is this a delegated lock? */ | |
3324 | if (test_bit(NFS_DELEGATED_STATE, &state->flags)) | |
3325 | goto out; | |
8d0a8a9d | 3326 | lsp = request->fl_u.nfs4_fl.owner; |
911d1aaf | 3327 | seqid = nfs_alloc_seqid(&lsp->ls_seqid); |
9b073574 | 3328 | status = -ENOMEM; |
911d1aaf | 3329 | if (seqid == NULL) |
9b073574 | 3330 | goto out; |
a5d16a4d TM |
3331 | task = nfs4_do_unlck(request, request->fl_file->private_data, lsp, seqid); |
3332 | status = PTR_ERR(task); | |
3333 | if (IS_ERR(task)) | |
9b073574 | 3334 | goto out; |
a5d16a4d | 3335 | status = nfs4_wait_for_completion_rpc_task(task); |
e6b3c4db | 3336 | rpc_put_task(task); |
9b073574 | 3337 | out: |
1da177e4 LT |
3338 | return status; |
3339 | } | |
3340 | ||
a5d16a4d TM |
3341 | struct nfs4_lockdata { |
3342 | struct nfs_lock_args arg; | |
3343 | struct nfs_lock_res res; | |
3344 | struct nfs4_lock_state *lsp; | |
3345 | struct nfs_open_context *ctx; | |
3346 | struct file_lock fl; | |
26e976a8 | 3347 | unsigned long timestamp; |
a5d16a4d TM |
3348 | int rpc_status; |
3349 | int cancelled; | |
3350 | }; | |
3351 | ||
3352 | static struct nfs4_lockdata *nfs4_alloc_lockdata(struct file_lock *fl, | |
3353 | struct nfs_open_context *ctx, struct nfs4_lock_state *lsp) | |
1da177e4 | 3354 | { |
a5d16a4d TM |
3355 | struct nfs4_lockdata *p; |
3356 | struct inode *inode = lsp->ls_state->inode; | |
1da177e4 | 3357 | struct nfs_server *server = NFS_SERVER(inode); |
a5d16a4d TM |
3358 | |
3359 | p = kzalloc(sizeof(*p), GFP_KERNEL); | |
3360 | if (p == NULL) | |
3361 | return NULL; | |
3362 | ||
3363 | p->arg.fh = NFS_FH(inode); | |
3364 | p->arg.fl = &p->fl; | |
3365 | p->arg.lock_seqid = nfs_alloc_seqid(&lsp->ls_seqid); | |
3366 | if (p->arg.lock_seqid == NULL) | |
3367 | goto out_free; | |
3368 | p->arg.lock_stateid = &lsp->ls_stateid; | |
7539bbab | 3369 | p->arg.lock_owner.clientid = server->nfs_client->cl_clientid; |
9f958ab8 | 3370 | p->arg.lock_owner.id = lsp->ls_id.id; |
a5d16a4d TM |
3371 | p->lsp = lsp; |
3372 | atomic_inc(&lsp->ls_count); | |
3373 | p->ctx = get_nfs_open_context(ctx); | |
3374 | memcpy(&p->fl, fl, sizeof(p->fl)); | |
3375 | return p; | |
3376 | out_free: | |
3377 | kfree(p); | |
3378 | return NULL; | |
3379 | } | |
3380 | ||
3381 | static void nfs4_lock_prepare(struct rpc_task *task, void *calldata) | |
3382 | { | |
3383 | struct nfs4_lockdata *data = calldata; | |
3384 | struct nfs4_state *state = data->lsp->ls_state; | |
3385 | struct nfs4_state_owner *sp = state->owner; | |
1da177e4 | 3386 | struct rpc_message msg = { |
a5d16a4d TM |
3387 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOCK], |
3388 | .rpc_argp = &data->arg, | |
3389 | .rpc_resp = &data->res, | |
3390 | .rpc_cred = sp->so_cred, | |
1da177e4 | 3391 | }; |
06735b34 | 3392 | |
a5d16a4d TM |
3393 | if (nfs_wait_on_sequence(data->arg.lock_seqid, task) != 0) |
3394 | return; | |
3395 | dprintk("%s: begin!\n", __FUNCTION__); | |
3396 | /* Do we need to do an open_to_lock_owner? */ | |
3397 | if (!(data->arg.lock_seqid->sequence->flags & NFS_SEQID_CONFIRMED)) { | |
3398 | data->arg.open_seqid = nfs_alloc_seqid(&sp->so_seqid); | |
3399 | if (data->arg.open_seqid == NULL) { | |
3400 | data->rpc_status = -ENOMEM; | |
3401 | task->tk_action = NULL; | |
06735b34 | 3402 | goto out; |
8d0a8a9d | 3403 | } |
a5d16a4d TM |
3404 | data->arg.open_stateid = &state->stateid; |
3405 | data->arg.new_lock_owner = 1; | |
3406 | } | |
26e976a8 | 3407 | data->timestamp = jiffies; |
a5d16a4d | 3408 | rpc_call_setup(task, &msg, 0); |
06735b34 | 3409 | out: |
a5d16a4d TM |
3410 | dprintk("%s: done!, ret = %d\n", __FUNCTION__, data->rpc_status); |
3411 | } | |
3412 | ||
3413 | static void nfs4_lock_done(struct rpc_task *task, void *calldata) | |
3414 | { | |
3415 | struct nfs4_lockdata *data = calldata; | |
3416 | ||
3417 | dprintk("%s: begin!\n", __FUNCTION__); | |
3418 | ||
3419 | data->rpc_status = task->tk_status; | |
3420 | if (RPC_ASSASSINATED(task)) | |
3421 | goto out; | |
3422 | if (data->arg.new_lock_owner != 0) { | |
3423 | nfs_increment_open_seqid(data->rpc_status, data->arg.open_seqid); | |
3424 | if (data->rpc_status == 0) | |
3425 | nfs_confirm_seqid(&data->lsp->ls_seqid, 0); | |
3426 | else | |
3427 | goto out; | |
3428 | } | |
3429 | if (data->rpc_status == 0) { | |
3430 | memcpy(data->lsp->ls_stateid.data, data->res.stateid.data, | |
3431 | sizeof(data->lsp->ls_stateid.data)); | |
3432 | data->lsp->ls_flags |= NFS_LOCK_INITIALIZED; | |
88be9f99 | 3433 | renew_lease(NFS_SERVER(data->ctx->path.dentry->d_inode), data->timestamp); |
a5d16a4d TM |
3434 | } |
3435 | nfs_increment_lock_seqid(data->rpc_status, data->arg.lock_seqid); | |
3436 | out: | |
3437 | dprintk("%s: done, ret = %d!\n", __FUNCTION__, data->rpc_status); | |
3438 | } | |
3439 | ||
3440 | static void nfs4_lock_release(void *calldata) | |
3441 | { | |
3442 | struct nfs4_lockdata *data = calldata; | |
3443 | ||
3444 | dprintk("%s: begin!\n", __FUNCTION__); | |
3445 | if (data->arg.open_seqid != NULL) | |
3446 | nfs_free_seqid(data->arg.open_seqid); | |
3447 | if (data->cancelled != 0) { | |
3448 | struct rpc_task *task; | |
3449 | task = nfs4_do_unlck(&data->fl, data->ctx, data->lsp, | |
3450 | data->arg.lock_seqid); | |
3451 | if (!IS_ERR(task)) | |
e6b3c4db | 3452 | rpc_put_task(task); |
a5d16a4d TM |
3453 | dprintk("%s: cancelling lock!\n", __FUNCTION__); |
3454 | } else | |
3455 | nfs_free_seqid(data->arg.lock_seqid); | |
3456 | nfs4_put_lock_state(data->lsp); | |
3457 | put_nfs_open_context(data->ctx); | |
3458 | kfree(data); | |
3459 | dprintk("%s: done!\n", __FUNCTION__); | |
3460 | } | |
3461 | ||
3462 | static const struct rpc_call_ops nfs4_lock_ops = { | |
3463 | .rpc_call_prepare = nfs4_lock_prepare, | |
3464 | .rpc_call_done = nfs4_lock_done, | |
3465 | .rpc_release = nfs4_lock_release, | |
3466 | }; | |
3467 | ||
3468 | static int _nfs4_do_setlk(struct nfs4_state *state, int cmd, struct file_lock *fl, int reclaim) | |
3469 | { | |
3470 | struct nfs4_lockdata *data; | |
3471 | struct rpc_task *task; | |
3472 | int ret; | |
3473 | ||
3474 | dprintk("%s: begin!\n", __FUNCTION__); | |
3475 | data = nfs4_alloc_lockdata(fl, fl->fl_file->private_data, | |
3476 | fl->fl_u.nfs4_fl.owner); | |
3477 | if (data == NULL) | |
3478 | return -ENOMEM; | |
3479 | if (IS_SETLKW(cmd)) | |
3480 | data->arg.block = 1; | |
3481 | if (reclaim != 0) | |
3482 | data->arg.reclaim = 1; | |
3483 | task = rpc_run_task(NFS_CLIENT(state->inode), RPC_TASK_ASYNC, | |
3484 | &nfs4_lock_ops, data); | |
7a1218a2 | 3485 | if (IS_ERR(task)) |
a5d16a4d | 3486 | return PTR_ERR(task); |
a5d16a4d TM |
3487 | ret = nfs4_wait_for_completion_rpc_task(task); |
3488 | if (ret == 0) { | |
3489 | ret = data->rpc_status; | |
3490 | if (ret == -NFS4ERR_DENIED) | |
3491 | ret = -EAGAIN; | |
3492 | } else | |
3493 | data->cancelled = 1; | |
e6b3c4db | 3494 | rpc_put_task(task); |
a5d16a4d TM |
3495 | dprintk("%s: done, ret = %d!\n", __FUNCTION__, ret); |
3496 | return ret; | |
1da177e4 LT |
3497 | } |
3498 | ||
3499 | static int nfs4_lock_reclaim(struct nfs4_state *state, struct file_lock *request) | |
3500 | { | |
202b50dc TM |
3501 | struct nfs_server *server = NFS_SERVER(state->inode); |
3502 | struct nfs4_exception exception = { }; | |
3503 | int err; | |
3504 | ||
3505 | do { | |
42a2d13e TM |
3506 | /* Cache the lock if possible... */ |
3507 | if (test_bit(NFS_DELEGATED_STATE, &state->flags) != 0) | |
3508 | return 0; | |
202b50dc TM |
3509 | err = _nfs4_do_setlk(state, F_SETLK, request, 1); |
3510 | if (err != -NFS4ERR_DELAY) | |
3511 | break; | |
3512 | nfs4_handle_exception(server, err, &exception); | |
3513 | } while (exception.retry); | |
3514 | return err; | |
1da177e4 LT |
3515 | } |
3516 | ||
3517 | static int nfs4_lock_expired(struct nfs4_state *state, struct file_lock *request) | |
3518 | { | |
202b50dc TM |
3519 | struct nfs_server *server = NFS_SERVER(state->inode); |
3520 | struct nfs4_exception exception = { }; | |
3521 | int err; | |
3522 | ||
6bfc93ef TM |
3523 | err = nfs4_set_lock_state(state, request); |
3524 | if (err != 0) | |
3525 | return err; | |
202b50dc | 3526 | do { |
42a2d13e TM |
3527 | if (test_bit(NFS_DELEGATED_STATE, &state->flags) != 0) |
3528 | return 0; | |
202b50dc TM |
3529 | err = _nfs4_do_setlk(state, F_SETLK, request, 0); |
3530 | if (err != -NFS4ERR_DELAY) | |
3531 | break; | |
3532 | nfs4_handle_exception(server, err, &exception); | |
3533 | } while (exception.retry); | |
3534 | return err; | |
1da177e4 LT |
3535 | } |
3536 | ||
3537 | static int _nfs4_proc_setlk(struct nfs4_state *state, int cmd, struct file_lock *request) | |
3538 | { | |
adfa6f98 | 3539 | struct nfs_client *clp = state->owner->so_client; |
01c3b861 | 3540 | unsigned char fl_flags = request->fl_flags; |
1da177e4 LT |
3541 | int status; |
3542 | ||
6bfc93ef | 3543 | /* Is this a delegated open? */ |
6bfc93ef TM |
3544 | status = nfs4_set_lock_state(state, request); |
3545 | if (status != 0) | |
3546 | goto out; | |
01c3b861 TM |
3547 | request->fl_flags |= FL_ACCESS; |
3548 | status = do_vfs_lock(request->fl_file, request); | |
3549 | if (status < 0) | |
3550 | goto out; | |
3551 | down_read(&clp->cl_sem); | |
3552 | if (test_bit(NFS_DELEGATED_STATE, &state->flags)) { | |
3553 | struct nfs_inode *nfsi = NFS_I(state->inode); | |
3554 | /* Yes: cache locks! */ | |
3555 | down_read(&nfsi->rwsem); | |
3556 | /* ...but avoid races with delegation recall... */ | |
3557 | if (test_bit(NFS_DELEGATED_STATE, &state->flags)) { | |
3558 | request->fl_flags = fl_flags & ~FL_SLEEP; | |
3559 | status = do_vfs_lock(request->fl_file, request); | |
3560 | up_read(&nfsi->rwsem); | |
3561 | goto out_unlock; | |
3562 | } | |
3563 | up_read(&nfsi->rwsem); | |
3564 | } | |
6bfc93ef TM |
3565 | status = _nfs4_do_setlk(state, cmd, request, 0); |
3566 | if (status != 0) | |
01c3b861 | 3567 | goto out_unlock; |
6bfc93ef | 3568 | /* Note: we always want to sleep here! */ |
01c3b861 | 3569 | request->fl_flags = fl_flags | FL_SLEEP; |
6bfc93ef TM |
3570 | if (do_vfs_lock(request->fl_file, request) < 0) |
3571 | printk(KERN_WARNING "%s: VFS is out of sync with lock manager!\n", __FUNCTION__); | |
01c3b861 | 3572 | out_unlock: |
1da177e4 | 3573 | up_read(&clp->cl_sem); |
01c3b861 TM |
3574 | out: |
3575 | request->fl_flags = fl_flags; | |
1da177e4 LT |
3576 | return status; |
3577 | } | |
3578 | ||
3579 | static int nfs4_proc_setlk(struct nfs4_state *state, int cmd, struct file_lock *request) | |
3580 | { | |
3581 | struct nfs4_exception exception = { }; | |
3582 | int err; | |
3583 | ||
3584 | do { | |
3585 | err = nfs4_handle_exception(NFS_SERVER(state->inode), | |
3586 | _nfs4_proc_setlk(state, cmd, request), | |
3587 | &exception); | |
3588 | } while (exception.retry); | |
3589 | return err; | |
3590 | } | |
3591 | ||
3592 | static int | |
3593 | nfs4_proc_lock(struct file *filp, int cmd, struct file_lock *request) | |
3594 | { | |
3595 | struct nfs_open_context *ctx; | |
3596 | struct nfs4_state *state; | |
3597 | unsigned long timeout = NFS4_LOCK_MINTIMEOUT; | |
3598 | int status; | |
3599 | ||
3600 | /* verify open state */ | |
3601 | ctx = (struct nfs_open_context *)filp->private_data; | |
3602 | state = ctx->state; | |
3603 | ||
3604 | if (request->fl_start < 0 || request->fl_end < 0) | |
3605 | return -EINVAL; | |
3606 | ||
3607 | if (IS_GETLK(cmd)) | |
3608 | return nfs4_proc_getlk(state, F_GETLK, request); | |
3609 | ||
3610 | if (!(IS_SETLK(cmd) || IS_SETLKW(cmd))) | |
3611 | return -EINVAL; | |
3612 | ||
3613 | if (request->fl_type == F_UNLCK) | |
3614 | return nfs4_proc_unlck(state, cmd, request); | |
3615 | ||
3616 | do { | |
3617 | status = nfs4_proc_setlk(state, cmd, request); | |
3618 | if ((status != -EAGAIN) || IS_SETLK(cmd)) | |
3619 | break; | |
3620 | timeout = nfs4_set_lock_task_retry(timeout); | |
3621 | status = -ERESTARTSYS; | |
3622 | if (signalled()) | |
3623 | break; | |
3624 | } while(status < 0); | |
1da177e4 LT |
3625 | return status; |
3626 | } | |
3627 | ||
888e694c TM |
3628 | int nfs4_lock_delegation_recall(struct nfs4_state *state, struct file_lock *fl) |
3629 | { | |
3630 | struct nfs_server *server = NFS_SERVER(state->inode); | |
3631 | struct nfs4_exception exception = { }; | |
3632 | int err; | |
3633 | ||
3634 | err = nfs4_set_lock_state(state, fl); | |
3635 | if (err != 0) | |
3636 | goto out; | |
3637 | do { | |
3638 | err = _nfs4_do_setlk(state, F_SETLK, fl, 0); | |
3639 | if (err != -NFS4ERR_DELAY) | |
3640 | break; | |
3641 | err = nfs4_handle_exception(server, err, &exception); | |
3642 | } while (exception.retry); | |
3643 | out: | |
3644 | return err; | |
3645 | } | |
6b3b5496 | 3646 | |
aa1870af BF |
3647 | #define XATTR_NAME_NFSV4_ACL "system.nfs4_acl" |
3648 | ||
6b3b5496 BF |
3649 | int nfs4_setxattr(struct dentry *dentry, const char *key, const void *buf, |
3650 | size_t buflen, int flags) | |
3651 | { | |
4b580ee3 BF |
3652 | struct inode *inode = dentry->d_inode; |
3653 | ||
3654 | if (strcmp(key, XATTR_NAME_NFSV4_ACL) != 0) | |
3655 | return -EOPNOTSUPP; | |
3656 | ||
3657 | if (!S_ISREG(inode->i_mode) && | |
3658 | (!S_ISDIR(inode->i_mode) || inode->i_mode & S_ISVTX)) | |
3659 | return -EPERM; | |
3660 | ||
3661 | return nfs4_proc_set_acl(inode, buf, buflen); | |
6b3b5496 BF |
3662 | } |
3663 | ||
3664 | /* The getxattr man page suggests returning -ENODATA for unknown attributes, | |
3665 | * and that's what we'll do for e.g. user attributes that haven't been set. | |
3666 | * But we'll follow ext2/ext3's lead by returning -EOPNOTSUPP for unsupported | |
3667 | * attributes in kernel-managed attribute namespaces. */ | |
3668 | ssize_t nfs4_getxattr(struct dentry *dentry, const char *key, void *buf, | |
3669 | size_t buflen) | |
3670 | { | |
aa1870af BF |
3671 | struct inode *inode = dentry->d_inode; |
3672 | ||
3673 | if (strcmp(key, XATTR_NAME_NFSV4_ACL) != 0) | |
3674 | return -EOPNOTSUPP; | |
3675 | ||
3676 | return nfs4_proc_get_acl(inode, buf, buflen); | |
6b3b5496 BF |
3677 | } |
3678 | ||
3679 | ssize_t nfs4_listxattr(struct dentry *dentry, char *buf, size_t buflen) | |
3680 | { | |
aa1870af | 3681 | size_t len = strlen(XATTR_NAME_NFSV4_ACL) + 1; |
6b3b5496 | 3682 | |
096455a2 BF |
3683 | if (!nfs4_server_supports_acls(NFS_SERVER(dentry->d_inode))) |
3684 | return 0; | |
6b3b5496 BF |
3685 | if (buf && buflen < len) |
3686 | return -ERANGE; | |
3687 | if (buf) | |
aa1870af BF |
3688 | memcpy(buf, XATTR_NAME_NFSV4_ACL, len); |
3689 | return len; | |
6b3b5496 BF |
3690 | } |
3691 | ||
56659e99 | 3692 | int nfs4_proc_fs_locations(struct inode *dir, const struct qstr *name, |
7aaa0b3b | 3693 | struct nfs4_fs_locations *fs_locations, struct page *page) |
683b57b4 TM |
3694 | { |
3695 | struct nfs_server *server = NFS_SERVER(dir); | |
3696 | u32 bitmask[2] = { | |
361e624f MN |
3697 | [0] = FATTR4_WORD0_FSID | FATTR4_WORD0_FS_LOCATIONS, |
3698 | [1] = FATTR4_WORD1_MOUNTED_ON_FILEID, | |
683b57b4 TM |
3699 | }; |
3700 | struct nfs4_fs_locations_arg args = { | |
3701 | .dir_fh = NFS_FH(dir), | |
c228fd3a | 3702 | .name = name, |
683b57b4 TM |
3703 | .page = page, |
3704 | .bitmask = bitmask, | |
3705 | }; | |
3706 | struct rpc_message msg = { | |
3707 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_FS_LOCATIONS], | |
3708 | .rpc_argp = &args, | |
7aaa0b3b | 3709 | .rpc_resp = fs_locations, |
683b57b4 TM |
3710 | }; |
3711 | int status; | |
3712 | ||
3713 | dprintk("%s: start\n", __FUNCTION__); | |
c228fd3a | 3714 | nfs_fattr_init(&fs_locations->fattr); |
683b57b4 | 3715 | fs_locations->server = server; |
830b8e33 | 3716 | fs_locations->nlocations = 0; |
683b57b4 TM |
3717 | status = rpc_call_sync(server->client, &msg, 0); |
3718 | dprintk("%s: returned status = %d\n", __FUNCTION__, status); | |
3719 | return status; | |
3720 | } | |
3721 | ||
1da177e4 LT |
3722 | struct nfs4_state_recovery_ops nfs4_reboot_recovery_ops = { |
3723 | .recover_open = nfs4_open_reclaim, | |
3724 | .recover_lock = nfs4_lock_reclaim, | |
3725 | }; | |
3726 | ||
3727 | struct nfs4_state_recovery_ops nfs4_network_partition_recovery_ops = { | |
3728 | .recover_open = nfs4_open_expired, | |
3729 | .recover_lock = nfs4_lock_expired, | |
3730 | }; | |
3731 | ||
92e1d5be | 3732 | static const struct inode_operations nfs4_file_inode_operations = { |
6b3b5496 BF |
3733 | .permission = nfs_permission, |
3734 | .getattr = nfs_getattr, | |
3735 | .setattr = nfs_setattr, | |
3736 | .getxattr = nfs4_getxattr, | |
3737 | .setxattr = nfs4_setxattr, | |
3738 | .listxattr = nfs4_listxattr, | |
3739 | }; | |
3740 | ||
509de811 | 3741 | const struct nfs_rpc_ops nfs_v4_clientops = { |
1da177e4 LT |
3742 | .version = 4, /* protocol version */ |
3743 | .dentry_ops = &nfs4_dentry_operations, | |
3744 | .dir_inode_ops = &nfs4_dir_inode_operations, | |
6b3b5496 | 3745 | .file_inode_ops = &nfs4_file_inode_operations, |
1da177e4 LT |
3746 | .getroot = nfs4_proc_get_root, |
3747 | .getattr = nfs4_proc_getattr, | |
3748 | .setattr = nfs4_proc_setattr, | |
2b3de441 | 3749 | .lookupfh = nfs4_proc_lookupfh, |
1da177e4 LT |
3750 | .lookup = nfs4_proc_lookup, |
3751 | .access = nfs4_proc_access, | |
3752 | .readlink = nfs4_proc_readlink, | |
1da177e4 LT |
3753 | .create = nfs4_proc_create, |
3754 | .remove = nfs4_proc_remove, | |
3755 | .unlink_setup = nfs4_proc_unlink_setup, | |
3756 | .unlink_done = nfs4_proc_unlink_done, | |
3757 | .rename = nfs4_proc_rename, | |
3758 | .link = nfs4_proc_link, | |
3759 | .symlink = nfs4_proc_symlink, | |
3760 | .mkdir = nfs4_proc_mkdir, | |
3761 | .rmdir = nfs4_proc_remove, | |
3762 | .readdir = nfs4_proc_readdir, | |
3763 | .mknod = nfs4_proc_mknod, | |
3764 | .statfs = nfs4_proc_statfs, | |
3765 | .fsinfo = nfs4_proc_fsinfo, | |
3766 | .pathconf = nfs4_proc_pathconf, | |
e9326dca | 3767 | .set_capabilities = nfs4_server_capabilities, |
1da177e4 LT |
3768 | .decode_dirent = nfs4_decode_dirent, |
3769 | .read_setup = nfs4_proc_read_setup, | |
ec06c096 | 3770 | .read_done = nfs4_read_done, |
1da177e4 | 3771 | .write_setup = nfs4_proc_write_setup, |
788e7a89 | 3772 | .write_done = nfs4_write_done, |
1da177e4 | 3773 | .commit_setup = nfs4_proc_commit_setup, |
788e7a89 | 3774 | .commit_done = nfs4_commit_done, |
02a913a7 TM |
3775 | .file_open = nfs_open, |
3776 | .file_release = nfs_release, | |
1da177e4 | 3777 | .lock = nfs4_proc_lock, |
e50a1c2e | 3778 | .clear_acl_cache = nfs4_zap_acl_attr, |
1da177e4 LT |
3779 | }; |
3780 | ||
3781 | /* | |
3782 | * Local variables: | |
3783 | * c-basic-offset: 8 | |
3784 | * End: | |
3785 | */ |