4 * Client-side procedure declarations for NFSv4.
6 * Copyright (c) 2002 The Regents of the University of Michigan.
9 * Kendrick Smith <kmsmith@umich.edu>
10 * Andy Adamson <andros@umich.edu>
12 * Redistribution and use in source and binary forms, with or without
13 * modification, are permitted provided that the following conditions
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.
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.
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>
50 #include <linux/mount.h>
51 #include <linux/module.h>
54 #include "delegation.h"
58 #define NFSDBG_FACILITY NFSDBG_PROC
60 #define NFS4_POLL_RETRY_MIN (HZ/10)
61 #define NFS4_POLL_RETRY_MAX (15*HZ)
64 static int _nfs4_proc_open(struct nfs4_opendata
*data
);
65 static int nfs4_do_fsinfo(struct nfs_server
*, struct nfs_fh
*, struct nfs_fsinfo
*);
66 static int nfs4_async_handle_error(struct rpc_task
*, const struct nfs_server
*, struct nfs4_state
*);
67 static int _nfs4_proc_lookup(struct inode
*dir
, const struct qstr
*name
, struct nfs_fh
*fhandle
, struct nfs_fattr
*fattr
);
68 static int _nfs4_proc_getattr(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fattr
*fattr
);
70 /* Prevent leaks of NFSv4 errors into userland */
71 static int nfs4_map_errors(int err
)
74 dprintk("%s could not handle NFSv4 error %d\n",
82 * This is our standard bitmap for GETATTR requests.
84 const u32 nfs4_fattr_bitmap
[2] = {
89 | FATTR4_WORD0_FILEID
,
91 | FATTR4_WORD1_NUMLINKS
93 | FATTR4_WORD1_OWNER_GROUP
95 | FATTR4_WORD1_SPACE_USED
96 | FATTR4_WORD1_TIME_ACCESS
97 | FATTR4_WORD1_TIME_METADATA
98 | FATTR4_WORD1_TIME_MODIFY
101 const u32 nfs4_statfs_bitmap
[2] = {
102 FATTR4_WORD0_FILES_AVAIL
103 | FATTR4_WORD0_FILES_FREE
104 | FATTR4_WORD0_FILES_TOTAL
,
105 FATTR4_WORD1_SPACE_AVAIL
106 | FATTR4_WORD1_SPACE_FREE
107 | FATTR4_WORD1_SPACE_TOTAL
110 const u32 nfs4_pathconf_bitmap
[2] = {
112 | FATTR4_WORD0_MAXNAME
,
116 const u32 nfs4_fsinfo_bitmap
[2] = { FATTR4_WORD0_MAXFILESIZE
117 | FATTR4_WORD0_MAXREAD
118 | FATTR4_WORD0_MAXWRITE
119 | FATTR4_WORD0_LEASE_TIME
,
123 const u32 nfs4_fs_locations_bitmap
[2] = {
125 | FATTR4_WORD0_CHANGE
128 | FATTR4_WORD0_FILEID
129 | FATTR4_WORD0_FS_LOCATIONS
,
131 | FATTR4_WORD1_NUMLINKS
133 | FATTR4_WORD1_OWNER_GROUP
134 | FATTR4_WORD1_RAWDEV
135 | FATTR4_WORD1_SPACE_USED
136 | FATTR4_WORD1_TIME_ACCESS
137 | FATTR4_WORD1_TIME_METADATA
138 | FATTR4_WORD1_TIME_MODIFY
139 | FATTR4_WORD1_MOUNTED_ON_FILEID
142 static void nfs4_setup_readdir(u64 cookie
, __be32
*verifier
, struct dentry
*dentry
,
143 struct nfs4_readdir_arg
*readdir
)
147 BUG_ON(readdir
->count
< 80);
149 readdir
->cookie
= cookie
;
150 memcpy(&readdir
->verifier
, verifier
, sizeof(readdir
->verifier
));
155 memset(&readdir
->verifier
, 0, sizeof(readdir
->verifier
));
160 * NFSv4 servers do not return entries for '.' and '..'
161 * Therefore, we fake these entries here. We let '.'
162 * have cookie 0 and '..' have cookie 1. Note that
163 * when talking to the server, we always send cookie 0
166 start
= p
= kmap_atomic(*readdir
->pages
, KM_USER0
);
169 *p
++ = xdr_one
; /* next */
170 *p
++ = xdr_zero
; /* cookie, first word */
171 *p
++ = xdr_one
; /* cookie, second word */
172 *p
++ = xdr_one
; /* entry len */
173 memcpy(p
, ".\0\0\0", 4); /* entry */
175 *p
++ = xdr_one
; /* bitmap length */
176 *p
++ = htonl(FATTR4_WORD0_FILEID
); /* bitmap */
177 *p
++ = htonl(8); /* attribute buffer length */
178 p
= xdr_encode_hyper(p
, NFS_FILEID(dentry
->d_inode
));
181 *p
++ = xdr_one
; /* next */
182 *p
++ = xdr_zero
; /* cookie, first word */
183 *p
++ = xdr_two
; /* cookie, second word */
184 *p
++ = xdr_two
; /* entry len */
185 memcpy(p
, "..\0\0", 4); /* entry */
187 *p
++ = xdr_one
; /* bitmap length */
188 *p
++ = htonl(FATTR4_WORD0_FILEID
); /* bitmap */
189 *p
++ = htonl(8); /* attribute buffer length */
190 p
= xdr_encode_hyper(p
, NFS_FILEID(dentry
->d_parent
->d_inode
));
192 readdir
->pgbase
= (char *)p
- (char *)start
;
193 readdir
->count
-= readdir
->pgbase
;
194 kunmap_atomic(start
, KM_USER0
);
197 static int nfs4_wait_clnt_recover(struct nfs_client
*clp
)
203 res
= wait_on_bit(&clp
->cl_state
, NFS4CLNT_MANAGER_RUNNING
,
204 nfs_wait_bit_killable
, TASK_KILLABLE
);
208 static int nfs4_delay(struct rpc_clnt
*clnt
, long *timeout
)
215 *timeout
= NFS4_POLL_RETRY_MIN
;
216 if (*timeout
> NFS4_POLL_RETRY_MAX
)
217 *timeout
= NFS4_POLL_RETRY_MAX
;
218 schedule_timeout_killable(*timeout
);
219 if (fatal_signal_pending(current
))
225 /* This is the error handling routine for processes that are allowed
228 static int nfs4_handle_exception(const struct nfs_server
*server
, int errorcode
, struct nfs4_exception
*exception
)
230 struct nfs_client
*clp
= server
->nfs_client
;
231 struct nfs4_state
*state
= exception
->state
;
234 exception
->retry
= 0;
238 case -NFS4ERR_ADMIN_REVOKED
:
239 case -NFS4ERR_BAD_STATEID
:
240 case -NFS4ERR_OPENMODE
:
243 nfs4_state_mark_reclaim_nograce(clp
, state
);
244 case -NFS4ERR_STALE_CLIENTID
:
245 case -NFS4ERR_STALE_STATEID
:
246 case -NFS4ERR_EXPIRED
:
247 nfs4_schedule_state_recovery(clp
);
248 ret
= nfs4_wait_clnt_recover(clp
);
250 exception
->retry
= 1;
252 case -NFS4ERR_FILE_OPEN
:
255 ret
= nfs4_delay(server
->client
, &exception
->timeout
);
258 case -NFS4ERR_OLD_STATEID
:
259 exception
->retry
= 1;
261 /* We failed to handle the error */
262 return nfs4_map_errors(ret
);
266 static void renew_lease(const struct nfs_server
*server
, unsigned long timestamp
)
268 struct nfs_client
*clp
= server
->nfs_client
;
269 spin_lock(&clp
->cl_lock
);
270 if (time_before(clp
->cl_last_renewal
,timestamp
))
271 clp
->cl_last_renewal
= timestamp
;
272 spin_unlock(&clp
->cl_lock
);
275 #if defined(CONFIG_NFS_V4_1)
278 * nfs4_free_slot - free a slot and efficiently update slot table.
280 * freeing a slot is trivially done by clearing its respective bit
282 * If the freed slotid equals highest_used_slotid we want to update it
283 * so that the server would be able to size down the slot table if needed,
284 * otherwise we know that the highest_used_slotid is still in use.
285 * When updating highest_used_slotid there may be "holes" in the bitmap
286 * so we need to scan down from highest_used_slotid to 0 looking for the now
287 * highest slotid in use.
288 * If none found, highest_used_slotid is set to -1.
291 nfs4_free_slot(struct nfs4_slot_table
*tbl
, u8 free_slotid
)
293 int slotid
= free_slotid
;
295 spin_lock(&tbl
->slot_tbl_lock
);
296 /* clear used bit in bitmap */
297 __clear_bit(slotid
, tbl
->used_slots
);
299 /* update highest_used_slotid when it is freed */
300 if (slotid
== tbl
->highest_used_slotid
) {
301 slotid
= find_last_bit(tbl
->used_slots
, tbl
->max_slots
);
302 if (slotid
>= 0 && slotid
< tbl
->max_slots
)
303 tbl
->highest_used_slotid
= slotid
;
305 tbl
->highest_used_slotid
= -1;
307 rpc_wake_up_next(&tbl
->slot_tbl_waitq
);
308 spin_unlock(&tbl
->slot_tbl_lock
);
309 dprintk("%s: free_slotid %u highest_used_slotid %d\n", __func__
,
310 free_slotid
, tbl
->highest_used_slotid
);
313 void nfs41_sequence_free_slot(const struct nfs_client
*clp
,
314 struct nfs4_sequence_res
*res
)
316 struct nfs4_slot_table
*tbl
;
318 if (!nfs4_has_session(clp
)) {
319 dprintk("%s: No session\n", __func__
);
322 tbl
= &clp
->cl_session
->fc_slot_table
;
323 if (res
->sr_slotid
== NFS4_MAX_SLOT_TABLE
) {
324 dprintk("%s: No slot\n", __func__
);
325 /* just wake up the next guy waiting since
326 * we may have not consumed a slot after all */
327 rpc_wake_up_next(&tbl
->slot_tbl_waitq
);
330 nfs4_free_slot(tbl
, res
->sr_slotid
);
331 res
->sr_slotid
= NFS4_MAX_SLOT_TABLE
;
334 static void nfs41_sequence_done(struct nfs_client
*clp
,
335 struct nfs4_sequence_res
*res
,
338 unsigned long timestamp
;
339 struct nfs4_slot_table
*tbl
;
340 struct nfs4_slot
*slot
;
343 * sr_status remains 1 if an RPC level error occurred. The server
344 * may or may not have processed the sequence operation..
345 * Proceed as if the server received and processed the sequence
348 if (res
->sr_status
== 1)
349 res
->sr_status
= NFS_OK
;
351 /* -ERESTARTSYS can result in skipping nfs41_sequence_setup */
352 if (res
->sr_slotid
== NFS4_MAX_SLOT_TABLE
)
355 tbl
= &clp
->cl_session
->fc_slot_table
;
356 slot
= tbl
->slots
+ res
->sr_slotid
;
358 if (res
->sr_status
== 0) {
359 /* Update the slot's sequence and clientid lease timer */
361 timestamp
= res
->sr_renewal_time
;
362 spin_lock(&clp
->cl_lock
);
363 if (time_before(clp
->cl_last_renewal
, timestamp
))
364 clp
->cl_last_renewal
= timestamp
;
365 spin_unlock(&clp
->cl_lock
);
369 /* The session may be reset by one of the error handlers. */
370 dprintk("%s: Error %d free the slot \n", __func__
, res
->sr_status
);
371 nfs41_sequence_free_slot(clp
, res
);
375 * nfs4_find_slot - efficiently look for a free slot
377 * nfs4_find_slot looks for an unset bit in the used_slots bitmap.
378 * If found, we mark the slot as used, update the highest_used_slotid,
379 * and respectively set up the sequence operation args.
380 * The slot number is returned if found, or NFS4_MAX_SLOT_TABLE otherwise.
382 * Note: must be called with under the slot_tbl_lock.
385 nfs4_find_slot(struct nfs4_slot_table
*tbl
, struct rpc_task
*task
)
388 u8 ret_id
= NFS4_MAX_SLOT_TABLE
;
389 BUILD_BUG_ON((u8
)NFS4_MAX_SLOT_TABLE
!= (int)NFS4_MAX_SLOT_TABLE
);
391 dprintk("--> %s used_slots=%04lx highest_used=%d max_slots=%d\n",
392 __func__
, tbl
->used_slots
[0], tbl
->highest_used_slotid
,
394 slotid
= find_first_zero_bit(tbl
->used_slots
, tbl
->max_slots
);
395 if (slotid
>= tbl
->max_slots
)
397 __set_bit(slotid
, tbl
->used_slots
);
398 if (slotid
> tbl
->highest_used_slotid
)
399 tbl
->highest_used_slotid
= slotid
;
402 dprintk("<-- %s used_slots=%04lx highest_used=%d slotid=%d \n",
403 __func__
, tbl
->used_slots
[0], tbl
->highest_used_slotid
, ret_id
);
407 static int nfs41_setup_sequence(struct nfs4_session
*session
,
408 struct nfs4_sequence_args
*args
,
409 struct nfs4_sequence_res
*res
,
411 struct rpc_task
*task
)
413 struct nfs4_slot
*slot
;
414 struct nfs4_slot_table
*tbl
;
417 dprintk("--> %s\n", __func__
);
418 /* slot already allocated? */
419 if (res
->sr_slotid
!= NFS4_MAX_SLOT_TABLE
)
422 memset(res
, 0, sizeof(*res
));
423 res
->sr_slotid
= NFS4_MAX_SLOT_TABLE
;
424 tbl
= &session
->fc_slot_table
;
426 spin_lock(&tbl
->slot_tbl_lock
);
427 slotid
= nfs4_find_slot(tbl
, task
);
428 if (slotid
== NFS4_MAX_SLOT_TABLE
) {
429 rpc_sleep_on(&tbl
->slot_tbl_waitq
, task
, NULL
);
430 spin_unlock(&tbl
->slot_tbl_lock
);
431 dprintk("<-- %s: no free slots\n", __func__
);
434 spin_unlock(&tbl
->slot_tbl_lock
);
436 slot
= tbl
->slots
+ slotid
;
437 args
->sa_session
= session
;
438 args
->sa_slotid
= slotid
;
439 args
->sa_cache_this
= cache_reply
;
441 dprintk("<-- %s slotid=%d seqid=%d\n", __func__
, slotid
, slot
->seq_nr
);
443 res
->sr_session
= session
;
444 res
->sr_slotid
= slotid
;
445 res
->sr_renewal_time
= jiffies
;
447 * sr_status is only set in decode_sequence, and so will remain
448 * set to 1 if an rpc level failure occurs.
454 int nfs4_setup_sequence(struct nfs_client
*clp
,
455 struct nfs4_sequence_args
*args
,
456 struct nfs4_sequence_res
*res
,
458 struct rpc_task
*task
)
462 dprintk("--> %s clp %p session %p sr_slotid %d\n",
463 __func__
, clp
, clp
->cl_session
, res
->sr_slotid
);
465 if (!nfs4_has_session(clp
))
467 ret
= nfs41_setup_sequence(clp
->cl_session
, args
, res
, cache_reply
,
469 if (ret
!= -EAGAIN
) {
470 /* terminate rpc task */
471 task
->tk_status
= ret
;
472 task
->tk_action
= NULL
;
475 dprintk("<-- %s status=%d\n", __func__
, ret
);
479 struct nfs41_call_sync_data
{
480 struct nfs_client
*clp
;
481 struct nfs4_sequence_args
*seq_args
;
482 struct nfs4_sequence_res
*seq_res
;
486 static void nfs41_call_sync_prepare(struct rpc_task
*task
, void *calldata
)
488 struct nfs41_call_sync_data
*data
= calldata
;
490 dprintk("--> %s data->clp->cl_session %p\n", __func__
,
491 data
->clp
->cl_session
);
492 if (nfs4_setup_sequence(data
->clp
, data
->seq_args
,
493 data
->seq_res
, data
->cache_reply
, task
))
495 rpc_call_start(task
);
498 static void nfs41_call_sync_done(struct rpc_task
*task
, void *calldata
)
500 struct nfs41_call_sync_data
*data
= calldata
;
502 nfs41_sequence_done(data
->clp
, data
->seq_res
, task
->tk_status
);
503 nfs41_sequence_free_slot(data
->clp
, data
->seq_res
);
506 struct rpc_call_ops nfs41_call_sync_ops
= {
507 .rpc_call_prepare
= nfs41_call_sync_prepare
,
508 .rpc_call_done
= nfs41_call_sync_done
,
511 static int nfs4_call_sync_sequence(struct nfs_client
*clp
,
512 struct rpc_clnt
*clnt
,
513 struct rpc_message
*msg
,
514 struct nfs4_sequence_args
*args
,
515 struct nfs4_sequence_res
*res
,
519 struct rpc_task
*task
;
520 struct nfs41_call_sync_data data
= {
524 .cache_reply
= cache_reply
,
526 struct rpc_task_setup task_setup
= {
529 .callback_ops
= &nfs41_call_sync_ops
,
530 .callback_data
= &data
533 res
->sr_slotid
= NFS4_MAX_SLOT_TABLE
;
534 task
= rpc_run_task(&task_setup
);
538 ret
= task
->tk_status
;
544 int _nfs4_call_sync_session(struct nfs_server
*server
,
545 struct rpc_message
*msg
,
546 struct nfs4_sequence_args
*args
,
547 struct nfs4_sequence_res
*res
,
550 return nfs4_call_sync_sequence(server
->nfs_client
, server
->client
,
551 msg
, args
, res
, cache_reply
);
554 #endif /* CONFIG_NFS_V4_1 */
556 int _nfs4_call_sync(struct nfs_server
*server
,
557 struct rpc_message
*msg
,
558 struct nfs4_sequence_args
*args
,
559 struct nfs4_sequence_res
*res
,
562 args
->sa_session
= res
->sr_session
= NULL
;
563 return rpc_call_sync(server
->client
, msg
, 0);
566 #define nfs4_call_sync(server, msg, args, res, cache_reply) \
567 (server)->nfs_client->cl_call_sync((server), (msg), &(args)->seq_args, \
568 &(res)->seq_res, (cache_reply))
570 static void nfs4_sequence_done(const struct nfs_server
*server
,
571 struct nfs4_sequence_res
*res
, int rpc_status
)
573 #ifdef CONFIG_NFS_V4_1
574 if (nfs4_has_session(server
->nfs_client
))
575 nfs41_sequence_done(server
->nfs_client
, res
, rpc_status
);
576 #endif /* CONFIG_NFS_V4_1 */
579 /* no restart, therefore free slot here */
580 static void nfs4_sequence_done_free_slot(const struct nfs_server
*server
,
581 struct nfs4_sequence_res
*res
,
584 nfs4_sequence_done(server
, res
, rpc_status
);
585 nfs4_sequence_free_slot(server
->nfs_client
, res
);
588 static void update_changeattr(struct inode
*dir
, struct nfs4_change_info
*cinfo
)
590 struct nfs_inode
*nfsi
= NFS_I(dir
);
592 spin_lock(&dir
->i_lock
);
593 nfsi
->cache_validity
|= NFS_INO_INVALID_ATTR
|NFS_INO_REVAL_PAGECACHE
|NFS_INO_INVALID_DATA
;
594 if (!cinfo
->atomic
|| cinfo
->before
!= nfsi
->change_attr
)
595 nfs_force_lookup_revalidate(dir
);
596 nfsi
->change_attr
= cinfo
->after
;
597 spin_unlock(&dir
->i_lock
);
600 struct nfs4_opendata
{
602 struct nfs_openargs o_arg
;
603 struct nfs_openres o_res
;
604 struct nfs_open_confirmargs c_arg
;
605 struct nfs_open_confirmres c_res
;
606 struct nfs_fattr f_attr
;
607 struct nfs_fattr dir_attr
;
610 struct nfs4_state_owner
*owner
;
611 struct nfs4_state
*state
;
613 unsigned long timestamp
;
614 unsigned int rpc_done
: 1;
620 static void nfs4_init_opendata_res(struct nfs4_opendata
*p
)
622 p
->o_res
.f_attr
= &p
->f_attr
;
623 p
->o_res
.dir_attr
= &p
->dir_attr
;
624 p
->o_res
.seqid
= p
->o_arg
.seqid
;
625 p
->c_res
.seqid
= p
->c_arg
.seqid
;
626 p
->o_res
.server
= p
->o_arg
.server
;
627 nfs_fattr_init(&p
->f_attr
);
628 nfs_fattr_init(&p
->dir_attr
);
631 static struct nfs4_opendata
*nfs4_opendata_alloc(struct path
*path
,
632 struct nfs4_state_owner
*sp
, fmode_t fmode
, int flags
,
633 const struct iattr
*attrs
)
635 struct dentry
*parent
= dget_parent(path
->dentry
);
636 struct inode
*dir
= parent
->d_inode
;
637 struct nfs_server
*server
= NFS_SERVER(dir
);
638 struct nfs4_opendata
*p
;
640 p
= kzalloc(sizeof(*p
), GFP_KERNEL
);
643 p
->o_arg
.seqid
= nfs_alloc_seqid(&sp
->so_seqid
);
644 if (p
->o_arg
.seqid
== NULL
)
646 p
->path
.mnt
= mntget(path
->mnt
);
647 p
->path
.dentry
= dget(path
->dentry
);
650 atomic_inc(&sp
->so_count
);
651 p
->o_arg
.fh
= NFS_FH(dir
);
652 p
->o_arg
.open_flags
= flags
;
653 p
->o_arg
.fmode
= fmode
& (FMODE_READ
|FMODE_WRITE
);
654 p
->o_arg
.clientid
= server
->nfs_client
->cl_clientid
;
655 p
->o_arg
.id
= sp
->so_owner_id
.id
;
656 p
->o_arg
.name
= &p
->path
.dentry
->d_name
;
657 p
->o_arg
.server
= server
;
658 p
->o_arg
.bitmask
= server
->attr_bitmask
;
659 p
->o_arg
.claim
= NFS4_OPEN_CLAIM_NULL
;
660 p
->o_res
.seq_res
.sr_slotid
= NFS4_MAX_SLOT_TABLE
;
661 if (flags
& O_EXCL
) {
662 u32
*s
= (u32
*) p
->o_arg
.u
.verifier
.data
;
665 } else if (flags
& O_CREAT
) {
666 p
->o_arg
.u
.attrs
= &p
->attrs
;
667 memcpy(&p
->attrs
, attrs
, sizeof(p
->attrs
));
669 p
->c_arg
.fh
= &p
->o_res
.fh
;
670 p
->c_arg
.stateid
= &p
->o_res
.stateid
;
671 p
->c_arg
.seqid
= p
->o_arg
.seqid
;
672 nfs4_init_opendata_res(p
);
682 static void nfs4_opendata_free(struct kref
*kref
)
684 struct nfs4_opendata
*p
= container_of(kref
,
685 struct nfs4_opendata
, kref
);
687 nfs_free_seqid(p
->o_arg
.seqid
);
688 if (p
->state
!= NULL
)
689 nfs4_put_open_state(p
->state
);
690 nfs4_put_state_owner(p
->owner
);
696 static void nfs4_opendata_put(struct nfs4_opendata
*p
)
699 kref_put(&p
->kref
, nfs4_opendata_free
);
702 static int nfs4_wait_for_completion_rpc_task(struct rpc_task
*task
)
706 ret
= rpc_wait_for_completion_task(task
);
710 static int can_open_cached(struct nfs4_state
*state
, fmode_t mode
, int open_mode
)
714 if (open_mode
& O_EXCL
)
716 switch (mode
& (FMODE_READ
|FMODE_WRITE
)) {
718 ret
|= test_bit(NFS_O_RDONLY_STATE
, &state
->flags
) != 0;
721 ret
|= test_bit(NFS_O_WRONLY_STATE
, &state
->flags
) != 0;
723 case FMODE_READ
|FMODE_WRITE
:
724 ret
|= test_bit(NFS_O_RDWR_STATE
, &state
->flags
) != 0;
730 static int can_open_delegated(struct nfs_delegation
*delegation
, fmode_t fmode
)
732 if ((delegation
->type
& fmode
) != fmode
)
734 if (test_bit(NFS_DELEGATION_NEED_RECLAIM
, &delegation
->flags
))
736 nfs_mark_delegation_referenced(delegation
);
740 static void update_open_stateflags(struct nfs4_state
*state
, fmode_t fmode
)
749 case FMODE_READ
|FMODE_WRITE
:
752 nfs4_state_set_mode_locked(state
, state
->state
| fmode
);
755 static void nfs_set_open_stateid_locked(struct nfs4_state
*state
, nfs4_stateid
*stateid
, fmode_t fmode
)
757 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) == 0)
758 memcpy(state
->stateid
.data
, stateid
->data
, sizeof(state
->stateid
.data
));
759 memcpy(state
->open_stateid
.data
, stateid
->data
, sizeof(state
->open_stateid
.data
));
762 set_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
765 set_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
767 case FMODE_READ
|FMODE_WRITE
:
768 set_bit(NFS_O_RDWR_STATE
, &state
->flags
);
772 static void nfs_set_open_stateid(struct nfs4_state
*state
, nfs4_stateid
*stateid
, fmode_t fmode
)
774 write_seqlock(&state
->seqlock
);
775 nfs_set_open_stateid_locked(state
, stateid
, fmode
);
776 write_sequnlock(&state
->seqlock
);
779 static void __update_open_stateid(struct nfs4_state
*state
, nfs4_stateid
*open_stateid
, const nfs4_stateid
*deleg_stateid
, fmode_t fmode
)
782 * Protect the call to nfs4_state_set_mode_locked and
783 * serialise the stateid update
785 write_seqlock(&state
->seqlock
);
786 if (deleg_stateid
!= NULL
) {
787 memcpy(state
->stateid
.data
, deleg_stateid
->data
, sizeof(state
->stateid
.data
));
788 set_bit(NFS_DELEGATED_STATE
, &state
->flags
);
790 if (open_stateid
!= NULL
)
791 nfs_set_open_stateid_locked(state
, open_stateid
, fmode
);
792 write_sequnlock(&state
->seqlock
);
793 spin_lock(&state
->owner
->so_lock
);
794 update_open_stateflags(state
, fmode
);
795 spin_unlock(&state
->owner
->so_lock
);
798 static int update_open_stateid(struct nfs4_state
*state
, nfs4_stateid
*open_stateid
, nfs4_stateid
*delegation
, fmode_t fmode
)
800 struct nfs_inode
*nfsi
= NFS_I(state
->inode
);
801 struct nfs_delegation
*deleg_cur
;
804 fmode
&= (FMODE_READ
|FMODE_WRITE
);
807 deleg_cur
= rcu_dereference(nfsi
->delegation
);
808 if (deleg_cur
== NULL
)
811 spin_lock(&deleg_cur
->lock
);
812 if (nfsi
->delegation
!= deleg_cur
||
813 (deleg_cur
->type
& fmode
) != fmode
)
814 goto no_delegation_unlock
;
816 if (delegation
== NULL
)
817 delegation
= &deleg_cur
->stateid
;
818 else if (memcmp(deleg_cur
->stateid
.data
, delegation
->data
, NFS4_STATEID_SIZE
) != 0)
819 goto no_delegation_unlock
;
821 nfs_mark_delegation_referenced(deleg_cur
);
822 __update_open_stateid(state
, open_stateid
, &deleg_cur
->stateid
, fmode
);
824 no_delegation_unlock
:
825 spin_unlock(&deleg_cur
->lock
);
829 if (!ret
&& open_stateid
!= NULL
) {
830 __update_open_stateid(state
, open_stateid
, NULL
, fmode
);
838 static void nfs4_return_incompatible_delegation(struct inode
*inode
, fmode_t fmode
)
840 struct nfs_delegation
*delegation
;
843 delegation
= rcu_dereference(NFS_I(inode
)->delegation
);
844 if (delegation
== NULL
|| (delegation
->type
& fmode
) == fmode
) {
849 nfs_inode_return_delegation(inode
);
852 static struct nfs4_state
*nfs4_try_open_cached(struct nfs4_opendata
*opendata
)
854 struct nfs4_state
*state
= opendata
->state
;
855 struct nfs_inode
*nfsi
= NFS_I(state
->inode
);
856 struct nfs_delegation
*delegation
;
857 int open_mode
= opendata
->o_arg
.open_flags
& O_EXCL
;
858 fmode_t fmode
= opendata
->o_arg
.fmode
;
859 nfs4_stateid stateid
;
863 if (can_open_cached(state
, fmode
, open_mode
)) {
864 spin_lock(&state
->owner
->so_lock
);
865 if (can_open_cached(state
, fmode
, open_mode
)) {
866 update_open_stateflags(state
, fmode
);
867 spin_unlock(&state
->owner
->so_lock
);
868 goto out_return_state
;
870 spin_unlock(&state
->owner
->so_lock
);
873 delegation
= rcu_dereference(nfsi
->delegation
);
874 if (delegation
== NULL
||
875 !can_open_delegated(delegation
, fmode
)) {
879 /* Save the delegation */
880 memcpy(stateid
.data
, delegation
->stateid
.data
, sizeof(stateid
.data
));
882 ret
= nfs_may_open(state
->inode
, state
->owner
->so_cred
, open_mode
);
887 /* Try to update the stateid using the delegation */
888 if (update_open_stateid(state
, NULL
, &stateid
, fmode
))
889 goto out_return_state
;
894 atomic_inc(&state
->count
);
898 static struct nfs4_state
*nfs4_opendata_to_nfs4_state(struct nfs4_opendata
*data
)
901 struct nfs4_state
*state
= NULL
;
902 struct nfs_delegation
*delegation
;
905 if (!data
->rpc_done
) {
906 state
= nfs4_try_open_cached(data
);
911 if (!(data
->f_attr
.valid
& NFS_ATTR_FATTR
))
913 inode
= nfs_fhget(data
->dir
->d_sb
, &data
->o_res
.fh
, &data
->f_attr
);
914 ret
= PTR_ERR(inode
);
918 state
= nfs4_get_open_state(inode
, data
->owner
);
921 if (data
->o_res
.delegation_type
!= 0) {
922 int delegation_flags
= 0;
925 delegation
= rcu_dereference(NFS_I(inode
)->delegation
);
927 delegation_flags
= delegation
->flags
;
929 if ((delegation_flags
& 1UL<<NFS_DELEGATION_NEED_RECLAIM
) == 0)
930 nfs_inode_set_delegation(state
->inode
,
931 data
->owner
->so_cred
,
934 nfs_inode_reclaim_delegation(state
->inode
,
935 data
->owner
->so_cred
,
939 update_open_stateid(state
, &data
->o_res
.stateid
, NULL
,
950 static struct nfs_open_context
*nfs4_state_find_open_context(struct nfs4_state
*state
)
952 struct nfs_inode
*nfsi
= NFS_I(state
->inode
);
953 struct nfs_open_context
*ctx
;
955 spin_lock(&state
->inode
->i_lock
);
956 list_for_each_entry(ctx
, &nfsi
->open_files
, list
) {
957 if (ctx
->state
!= state
)
959 get_nfs_open_context(ctx
);
960 spin_unlock(&state
->inode
->i_lock
);
963 spin_unlock(&state
->inode
->i_lock
);
964 return ERR_PTR(-ENOENT
);
967 static struct nfs4_opendata
*nfs4_open_recoverdata_alloc(struct nfs_open_context
*ctx
, struct nfs4_state
*state
)
969 struct nfs4_opendata
*opendata
;
971 opendata
= nfs4_opendata_alloc(&ctx
->path
, state
->owner
, 0, 0, NULL
);
972 if (opendata
== NULL
)
973 return ERR_PTR(-ENOMEM
);
974 opendata
->state
= state
;
975 atomic_inc(&state
->count
);
979 static int nfs4_open_recover_helper(struct nfs4_opendata
*opendata
, fmode_t fmode
, struct nfs4_state
**res
)
981 struct nfs4_state
*newstate
;
984 opendata
->o_arg
.open_flags
= 0;
985 opendata
->o_arg
.fmode
= fmode
;
986 memset(&opendata
->o_res
, 0, sizeof(opendata
->o_res
));
987 memset(&opendata
->c_res
, 0, sizeof(opendata
->c_res
));
988 nfs4_init_opendata_res(opendata
);
989 ret
= _nfs4_proc_open(opendata
);
992 newstate
= nfs4_opendata_to_nfs4_state(opendata
);
993 if (IS_ERR(newstate
))
994 return PTR_ERR(newstate
);
995 nfs4_close_state(&opendata
->path
, newstate
, fmode
);
1000 static int nfs4_open_recover(struct nfs4_opendata
*opendata
, struct nfs4_state
*state
)
1002 struct nfs4_state
*newstate
;
1005 /* memory barrier prior to reading state->n_* */
1006 clear_bit(NFS_DELEGATED_STATE
, &state
->flags
);
1008 if (state
->n_rdwr
!= 0) {
1009 ret
= nfs4_open_recover_helper(opendata
, FMODE_READ
|FMODE_WRITE
, &newstate
);
1012 if (newstate
!= state
)
1015 if (state
->n_wronly
!= 0) {
1016 ret
= nfs4_open_recover_helper(opendata
, FMODE_WRITE
, &newstate
);
1019 if (newstate
!= state
)
1022 if (state
->n_rdonly
!= 0) {
1023 ret
= nfs4_open_recover_helper(opendata
, FMODE_READ
, &newstate
);
1026 if (newstate
!= state
)
1030 * We may have performed cached opens for all three recoveries.
1031 * Check if we need to update the current stateid.
1033 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) == 0 &&
1034 memcmp(state
->stateid
.data
, state
->open_stateid
.data
, sizeof(state
->stateid
.data
)) != 0) {
1035 write_seqlock(&state
->seqlock
);
1036 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) == 0)
1037 memcpy(state
->stateid
.data
, state
->open_stateid
.data
, sizeof(state
->stateid
.data
));
1038 write_sequnlock(&state
->seqlock
);
1045 * reclaim state on the server after a reboot.
1047 static int _nfs4_do_open_reclaim(struct nfs_open_context
*ctx
, struct nfs4_state
*state
)
1049 struct nfs_delegation
*delegation
;
1050 struct nfs4_opendata
*opendata
;
1051 fmode_t delegation_type
= 0;
1054 opendata
= nfs4_open_recoverdata_alloc(ctx
, state
);
1055 if (IS_ERR(opendata
))
1056 return PTR_ERR(opendata
);
1057 opendata
->o_arg
.claim
= NFS4_OPEN_CLAIM_PREVIOUS
;
1058 opendata
->o_arg
.fh
= NFS_FH(state
->inode
);
1060 delegation
= rcu_dereference(NFS_I(state
->inode
)->delegation
);
1061 if (delegation
!= NULL
&& test_bit(NFS_DELEGATION_NEED_RECLAIM
, &delegation
->flags
) != 0)
1062 delegation_type
= delegation
->type
;
1064 opendata
->o_arg
.u
.delegation_type
= delegation_type
;
1065 status
= nfs4_open_recover(opendata
, state
);
1066 nfs4_opendata_put(opendata
);
1070 static int nfs4_do_open_reclaim(struct nfs_open_context
*ctx
, struct nfs4_state
*state
)
1072 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
1073 struct nfs4_exception exception
= { };
1076 err
= _nfs4_do_open_reclaim(ctx
, state
);
1077 if (err
!= -NFS4ERR_DELAY
)
1079 nfs4_handle_exception(server
, err
, &exception
);
1080 } while (exception
.retry
);
1084 static int nfs4_open_reclaim(struct nfs4_state_owner
*sp
, struct nfs4_state
*state
)
1086 struct nfs_open_context
*ctx
;
1089 ctx
= nfs4_state_find_open_context(state
);
1091 return PTR_ERR(ctx
);
1092 ret
= nfs4_do_open_reclaim(ctx
, state
);
1093 put_nfs_open_context(ctx
);
1097 static int _nfs4_open_delegation_recall(struct nfs_open_context
*ctx
, struct nfs4_state
*state
, const nfs4_stateid
*stateid
)
1099 struct nfs4_opendata
*opendata
;
1102 opendata
= nfs4_open_recoverdata_alloc(ctx
, state
);
1103 if (IS_ERR(opendata
))
1104 return PTR_ERR(opendata
);
1105 opendata
->o_arg
.claim
= NFS4_OPEN_CLAIM_DELEGATE_CUR
;
1106 memcpy(opendata
->o_arg
.u
.delegation
.data
, stateid
->data
,
1107 sizeof(opendata
->o_arg
.u
.delegation
.data
));
1108 ret
= nfs4_open_recover(opendata
, state
);
1109 nfs4_opendata_put(opendata
);
1113 int nfs4_open_delegation_recall(struct nfs_open_context
*ctx
, struct nfs4_state
*state
, const nfs4_stateid
*stateid
)
1115 struct nfs4_exception exception
= { };
1116 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
1119 err
= _nfs4_open_delegation_recall(ctx
, state
, stateid
);
1123 case -NFS4ERR_STALE_CLIENTID
:
1124 case -NFS4ERR_STALE_STATEID
:
1125 case -NFS4ERR_EXPIRED
:
1126 /* Don't recall a delegation if it was lost */
1127 nfs4_schedule_state_recovery(server
->nfs_client
);
1130 err
= nfs4_handle_exception(server
, err
, &exception
);
1131 } while (exception
.retry
);
1135 static void nfs4_open_confirm_done(struct rpc_task
*task
, void *calldata
)
1137 struct nfs4_opendata
*data
= calldata
;
1139 data
->rpc_status
= task
->tk_status
;
1140 if (RPC_ASSASSINATED(task
))
1142 if (data
->rpc_status
== 0) {
1143 memcpy(data
->o_res
.stateid
.data
, data
->c_res
.stateid
.data
,
1144 sizeof(data
->o_res
.stateid
.data
));
1145 nfs_confirm_seqid(&data
->owner
->so_seqid
, 0);
1146 renew_lease(data
->o_res
.server
, data
->timestamp
);
1151 static void nfs4_open_confirm_release(void *calldata
)
1153 struct nfs4_opendata
*data
= calldata
;
1154 struct nfs4_state
*state
= NULL
;
1156 /* If this request hasn't been cancelled, do nothing */
1157 if (data
->cancelled
== 0)
1159 /* In case of error, no cleanup! */
1160 if (!data
->rpc_done
)
1162 state
= nfs4_opendata_to_nfs4_state(data
);
1164 nfs4_close_state(&data
->path
, state
, data
->o_arg
.fmode
);
1166 nfs4_opendata_put(data
);
1169 static const struct rpc_call_ops nfs4_open_confirm_ops
= {
1170 .rpc_call_done
= nfs4_open_confirm_done
,
1171 .rpc_release
= nfs4_open_confirm_release
,
1175 * Note: On error, nfs4_proc_open_confirm will free the struct nfs4_opendata
1177 static int _nfs4_proc_open_confirm(struct nfs4_opendata
*data
)
1179 struct nfs_server
*server
= NFS_SERVER(data
->dir
->d_inode
);
1180 struct rpc_task
*task
;
1181 struct rpc_message msg
= {
1182 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_OPEN_CONFIRM
],
1183 .rpc_argp
= &data
->c_arg
,
1184 .rpc_resp
= &data
->c_res
,
1185 .rpc_cred
= data
->owner
->so_cred
,
1187 struct rpc_task_setup task_setup_data
= {
1188 .rpc_client
= server
->client
,
1189 .rpc_message
= &msg
,
1190 .callback_ops
= &nfs4_open_confirm_ops
,
1191 .callback_data
= data
,
1192 .workqueue
= nfsiod_workqueue
,
1193 .flags
= RPC_TASK_ASYNC
,
1197 kref_get(&data
->kref
);
1199 data
->rpc_status
= 0;
1200 data
->timestamp
= jiffies
;
1201 task
= rpc_run_task(&task_setup_data
);
1203 return PTR_ERR(task
);
1204 status
= nfs4_wait_for_completion_rpc_task(task
);
1206 data
->cancelled
= 1;
1209 status
= data
->rpc_status
;
1214 static void nfs4_open_prepare(struct rpc_task
*task
, void *calldata
)
1216 struct nfs4_opendata
*data
= calldata
;
1217 struct nfs4_state_owner
*sp
= data
->owner
;
1219 if (nfs_wait_on_sequence(data
->o_arg
.seqid
, task
) != 0)
1222 * Check if we still need to send an OPEN call, or if we can use
1223 * a delegation instead.
1225 if (data
->state
!= NULL
) {
1226 struct nfs_delegation
*delegation
;
1228 if (can_open_cached(data
->state
, data
->o_arg
.fmode
, data
->o_arg
.open_flags
))
1231 delegation
= rcu_dereference(NFS_I(data
->state
->inode
)->delegation
);
1232 if (delegation
!= NULL
&&
1233 test_bit(NFS_DELEGATION_NEED_RECLAIM
, &delegation
->flags
) == 0) {
1239 /* Update sequence id. */
1240 data
->o_arg
.id
= sp
->so_owner_id
.id
;
1241 data
->o_arg
.clientid
= sp
->so_client
->cl_clientid
;
1242 if (data
->o_arg
.claim
== NFS4_OPEN_CLAIM_PREVIOUS
) {
1243 task
->tk_msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_OPEN_NOATTR
];
1244 nfs_copy_fh(&data
->o_res
.fh
, data
->o_arg
.fh
);
1246 data
->timestamp
= jiffies
;
1247 if (nfs4_setup_sequence(data
->o_arg
.server
->nfs_client
,
1248 &data
->o_arg
.seq_args
,
1249 &data
->o_res
.seq_res
, 1, task
))
1251 rpc_call_start(task
);
1254 task
->tk_action
= NULL
;
1258 static void nfs4_open_done(struct rpc_task
*task
, void *calldata
)
1260 struct nfs4_opendata
*data
= calldata
;
1262 data
->rpc_status
= task
->tk_status
;
1264 nfs4_sequence_done_free_slot(data
->o_arg
.server
, &data
->o_res
.seq_res
,
1267 if (RPC_ASSASSINATED(task
))
1269 if (task
->tk_status
== 0) {
1270 switch (data
->o_res
.f_attr
->mode
& S_IFMT
) {
1274 data
->rpc_status
= -ELOOP
;
1277 data
->rpc_status
= -EISDIR
;
1280 data
->rpc_status
= -ENOTDIR
;
1282 renew_lease(data
->o_res
.server
, data
->timestamp
);
1283 if (!(data
->o_res
.rflags
& NFS4_OPEN_RESULT_CONFIRM
))
1284 nfs_confirm_seqid(&data
->owner
->so_seqid
, 0);
1289 static void nfs4_open_release(void *calldata
)
1291 struct nfs4_opendata
*data
= calldata
;
1292 struct nfs4_state
*state
= NULL
;
1294 /* If this request hasn't been cancelled, do nothing */
1295 if (data
->cancelled
== 0)
1297 /* In case of error, no cleanup! */
1298 if (data
->rpc_status
!= 0 || !data
->rpc_done
)
1300 /* In case we need an open_confirm, no cleanup! */
1301 if (data
->o_res
.rflags
& NFS4_OPEN_RESULT_CONFIRM
)
1303 state
= nfs4_opendata_to_nfs4_state(data
);
1305 nfs4_close_state(&data
->path
, state
, data
->o_arg
.fmode
);
1307 nfs4_opendata_put(data
);
1310 static const struct rpc_call_ops nfs4_open_ops
= {
1311 .rpc_call_prepare
= nfs4_open_prepare
,
1312 .rpc_call_done
= nfs4_open_done
,
1313 .rpc_release
= nfs4_open_release
,
1317 * Note: On error, nfs4_proc_open will free the struct nfs4_opendata
1319 static int _nfs4_proc_open(struct nfs4_opendata
*data
)
1321 struct inode
*dir
= data
->dir
->d_inode
;
1322 struct nfs_server
*server
= NFS_SERVER(dir
);
1323 struct nfs_openargs
*o_arg
= &data
->o_arg
;
1324 struct nfs_openres
*o_res
= &data
->o_res
;
1325 struct rpc_task
*task
;
1326 struct rpc_message msg
= {
1327 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_OPEN
],
1330 .rpc_cred
= data
->owner
->so_cred
,
1332 struct rpc_task_setup task_setup_data
= {
1333 .rpc_client
= server
->client
,
1334 .rpc_message
= &msg
,
1335 .callback_ops
= &nfs4_open_ops
,
1336 .callback_data
= data
,
1337 .workqueue
= nfsiod_workqueue
,
1338 .flags
= RPC_TASK_ASYNC
,
1342 kref_get(&data
->kref
);
1344 data
->rpc_status
= 0;
1345 data
->cancelled
= 0;
1346 task
= rpc_run_task(&task_setup_data
);
1348 return PTR_ERR(task
);
1349 status
= nfs4_wait_for_completion_rpc_task(task
);
1351 data
->cancelled
= 1;
1354 status
= data
->rpc_status
;
1356 if (status
!= 0 || !data
->rpc_done
)
1359 if (o_res
->fh
.size
== 0)
1360 _nfs4_proc_lookup(dir
, o_arg
->name
, &o_res
->fh
, o_res
->f_attr
);
1362 if (o_arg
->open_flags
& O_CREAT
) {
1363 update_changeattr(dir
, &o_res
->cinfo
);
1364 nfs_post_op_update_inode(dir
, o_res
->dir_attr
);
1366 nfs_refresh_inode(dir
, o_res
->dir_attr
);
1367 if(o_res
->rflags
& NFS4_OPEN_RESULT_CONFIRM
) {
1368 status
= _nfs4_proc_open_confirm(data
);
1372 if (!(o_res
->f_attr
->valid
& NFS_ATTR_FATTR
))
1373 _nfs4_proc_getattr(server
, &o_res
->fh
, o_res
->f_attr
);
1377 static int nfs4_recover_expired_lease(struct nfs_server
*server
)
1379 struct nfs_client
*clp
= server
->nfs_client
;
1383 ret
= nfs4_wait_clnt_recover(clp
);
1386 if (!test_bit(NFS4CLNT_LEASE_EXPIRED
, &clp
->cl_state
) &&
1387 !test_bit(NFS4CLNT_CHECK_LEASE
,&clp
->cl_state
))
1389 nfs4_schedule_state_recovery(clp
);
1396 * reclaim state on the server after a network partition.
1397 * Assumes caller holds the appropriate lock
1399 static int _nfs4_open_expired(struct nfs_open_context
*ctx
, struct nfs4_state
*state
)
1401 struct nfs4_opendata
*opendata
;
1404 opendata
= nfs4_open_recoverdata_alloc(ctx
, state
);
1405 if (IS_ERR(opendata
))
1406 return PTR_ERR(opendata
);
1407 ret
= nfs4_open_recover(opendata
, state
);
1409 d_drop(ctx
->path
.dentry
);
1410 nfs4_opendata_put(opendata
);
1414 static inline int nfs4_do_open_expired(struct nfs_open_context
*ctx
, struct nfs4_state
*state
)
1416 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
1417 struct nfs4_exception exception
= { };
1421 err
= _nfs4_open_expired(ctx
, state
);
1422 if (err
!= -NFS4ERR_DELAY
)
1424 nfs4_handle_exception(server
, err
, &exception
);
1425 } while (exception
.retry
);
1429 static int nfs4_open_expired(struct nfs4_state_owner
*sp
, struct nfs4_state
*state
)
1431 struct nfs_open_context
*ctx
;
1434 ctx
= nfs4_state_find_open_context(state
);
1436 return PTR_ERR(ctx
);
1437 ret
= nfs4_do_open_expired(ctx
, state
);
1438 put_nfs_open_context(ctx
);
1443 * on an EXCLUSIVE create, the server should send back a bitmask with FATTR4-*
1444 * fields corresponding to attributes that were used to store the verifier.
1445 * Make sure we clobber those fields in the later setattr call
1447 static inline void nfs4_exclusive_attrset(struct nfs4_opendata
*opendata
, struct iattr
*sattr
)
1449 if ((opendata
->o_res
.attrset
[1] & FATTR4_WORD1_TIME_ACCESS
) &&
1450 !(sattr
->ia_valid
& ATTR_ATIME_SET
))
1451 sattr
->ia_valid
|= ATTR_ATIME
;
1453 if ((opendata
->o_res
.attrset
[1] & FATTR4_WORD1_TIME_MODIFY
) &&
1454 !(sattr
->ia_valid
& ATTR_MTIME_SET
))
1455 sattr
->ia_valid
|= ATTR_MTIME
;
1459 * Returns a referenced nfs4_state
1461 static int _nfs4_do_open(struct inode
*dir
, struct path
*path
, fmode_t fmode
, int flags
, struct iattr
*sattr
, struct rpc_cred
*cred
, struct nfs4_state
**res
)
1463 struct nfs4_state_owner
*sp
;
1464 struct nfs4_state
*state
= NULL
;
1465 struct nfs_server
*server
= NFS_SERVER(dir
);
1466 struct nfs4_opendata
*opendata
;
1469 /* Protect against reboot recovery conflicts */
1471 if (!(sp
= nfs4_get_state_owner(server
, cred
))) {
1472 dprintk("nfs4_do_open: nfs4_get_state_owner failed!\n");
1475 status
= nfs4_recover_expired_lease(server
);
1477 goto err_put_state_owner
;
1478 if (path
->dentry
->d_inode
!= NULL
)
1479 nfs4_return_incompatible_delegation(path
->dentry
->d_inode
, fmode
);
1481 opendata
= nfs4_opendata_alloc(path
, sp
, fmode
, flags
, sattr
);
1482 if (opendata
== NULL
)
1483 goto err_put_state_owner
;
1485 if (path
->dentry
->d_inode
!= NULL
)
1486 opendata
->state
= nfs4_get_open_state(path
->dentry
->d_inode
, sp
);
1488 status
= _nfs4_proc_open(opendata
);
1490 goto err_opendata_put
;
1492 if (opendata
->o_arg
.open_flags
& O_EXCL
)
1493 nfs4_exclusive_attrset(opendata
, sattr
);
1495 state
= nfs4_opendata_to_nfs4_state(opendata
);
1496 status
= PTR_ERR(state
);
1498 goto err_opendata_put
;
1499 nfs4_opendata_put(opendata
);
1500 nfs4_put_state_owner(sp
);
1504 nfs4_opendata_put(opendata
);
1505 err_put_state_owner
:
1506 nfs4_put_state_owner(sp
);
1513 static struct nfs4_state
*nfs4_do_open(struct inode
*dir
, struct path
*path
, fmode_t fmode
, int flags
, struct iattr
*sattr
, struct rpc_cred
*cred
)
1515 struct nfs4_exception exception
= { };
1516 struct nfs4_state
*res
;
1520 status
= _nfs4_do_open(dir
, path
, fmode
, flags
, sattr
, cred
, &res
);
1523 /* NOTE: BAD_SEQID means the server and client disagree about the
1524 * book-keeping w.r.t. state-changing operations
1525 * (OPEN/CLOSE/LOCK/LOCKU...)
1526 * It is actually a sign of a bug on the client or on the server.
1528 * If we receive a BAD_SEQID error in the particular case of
1529 * doing an OPEN, we assume that nfs_increment_open_seqid() will
1530 * have unhashed the old state_owner for us, and that we can
1531 * therefore safely retry using a new one. We should still warn
1532 * the user though...
1534 if (status
== -NFS4ERR_BAD_SEQID
) {
1535 printk(KERN_WARNING
"NFS: v4 server %s "
1536 " returned a bad sequence-id error!\n",
1537 NFS_SERVER(dir
)->nfs_client
->cl_hostname
);
1538 exception
.retry
= 1;
1542 * BAD_STATEID on OPEN means that the server cancelled our
1543 * state before it received the OPEN_CONFIRM.
1544 * Recover by retrying the request as per the discussion
1545 * on Page 181 of RFC3530.
1547 if (status
== -NFS4ERR_BAD_STATEID
) {
1548 exception
.retry
= 1;
1551 if (status
== -EAGAIN
) {
1552 /* We must have found a delegation */
1553 exception
.retry
= 1;
1556 res
= ERR_PTR(nfs4_handle_exception(NFS_SERVER(dir
),
1557 status
, &exception
));
1558 } while (exception
.retry
);
1562 static int _nfs4_do_setattr(struct inode
*inode
, struct rpc_cred
*cred
,
1563 struct nfs_fattr
*fattr
, struct iattr
*sattr
,
1564 struct nfs4_state
*state
)
1566 struct nfs_server
*server
= NFS_SERVER(inode
);
1567 struct nfs_setattrargs arg
= {
1568 .fh
= NFS_FH(inode
),
1571 .bitmask
= server
->attr_bitmask
,
1573 struct nfs_setattrres res
= {
1577 struct rpc_message msg
= {
1578 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETATTR
],
1583 unsigned long timestamp
= jiffies
;
1586 nfs_fattr_init(fattr
);
1588 if (nfs4_copy_delegation_stateid(&arg
.stateid
, inode
)) {
1589 /* Use that stateid */
1590 } else if (state
!= NULL
) {
1591 nfs4_copy_stateid(&arg
.stateid
, state
, current
->files
);
1593 memcpy(&arg
.stateid
, &zero_stateid
, sizeof(arg
.stateid
));
1595 status
= nfs4_call_sync(server
, &msg
, &arg
, &res
, 1);
1596 if (status
== 0 && state
!= NULL
)
1597 renew_lease(server
, timestamp
);
1601 static int nfs4_do_setattr(struct inode
*inode
, struct rpc_cred
*cred
,
1602 struct nfs_fattr
*fattr
, struct iattr
*sattr
,
1603 struct nfs4_state
*state
)
1605 struct nfs_server
*server
= NFS_SERVER(inode
);
1606 struct nfs4_exception exception
= { };
1609 err
= nfs4_handle_exception(server
,
1610 _nfs4_do_setattr(inode
, cred
, fattr
, sattr
, state
),
1612 } while (exception
.retry
);
1616 struct nfs4_closedata
{
1618 struct inode
*inode
;
1619 struct nfs4_state
*state
;
1620 struct nfs_closeargs arg
;
1621 struct nfs_closeres res
;
1622 struct nfs_fattr fattr
;
1623 unsigned long timestamp
;
1626 static void nfs4_free_closedata(void *data
)
1628 struct nfs4_closedata
*calldata
= data
;
1629 struct nfs4_state_owner
*sp
= calldata
->state
->owner
;
1631 nfs4_put_open_state(calldata
->state
);
1632 nfs_free_seqid(calldata
->arg
.seqid
);
1633 nfs4_put_state_owner(sp
);
1634 path_put(&calldata
->path
);
1638 static void nfs4_close_done(struct rpc_task
*task
, void *data
)
1640 struct nfs4_closedata
*calldata
= data
;
1641 struct nfs4_state
*state
= calldata
->state
;
1642 struct nfs_server
*server
= NFS_SERVER(calldata
->inode
);
1644 nfs4_sequence_done(server
, &calldata
->res
.seq_res
, task
->tk_status
);
1645 if (RPC_ASSASSINATED(task
))
1647 /* hmm. we are done with the inode, and in the process of freeing
1648 * the state_owner. we keep this around to process errors
1650 switch (task
->tk_status
) {
1652 nfs_set_open_stateid(state
, &calldata
->res
.stateid
, 0);
1653 renew_lease(server
, calldata
->timestamp
);
1655 case -NFS4ERR_STALE_STATEID
:
1656 case -NFS4ERR_OLD_STATEID
:
1657 case -NFS4ERR_BAD_STATEID
:
1658 case -NFS4ERR_EXPIRED
:
1659 if (calldata
->arg
.fmode
== 0)
1662 if (nfs4_async_handle_error(task
, server
, state
) == -EAGAIN
) {
1663 rpc_restart_call(task
);
1667 nfs4_sequence_free_slot(server
->nfs_client
, &calldata
->res
.seq_res
);
1668 nfs_refresh_inode(calldata
->inode
, calldata
->res
.fattr
);
1671 static void nfs4_close_prepare(struct rpc_task
*task
, void *data
)
1673 struct nfs4_closedata
*calldata
= data
;
1674 struct nfs4_state
*state
= calldata
->state
;
1675 int clear_rd
, clear_wr
, clear_rdwr
;
1677 if (nfs_wait_on_sequence(calldata
->arg
.seqid
, task
) != 0)
1680 clear_rd
= clear_wr
= clear_rdwr
= 0;
1681 spin_lock(&state
->owner
->so_lock
);
1682 /* Calculate the change in open mode */
1683 if (state
->n_rdwr
== 0) {
1684 if (state
->n_rdonly
== 0) {
1685 clear_rd
|= test_and_clear_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
1686 clear_rdwr
|= test_and_clear_bit(NFS_O_RDWR_STATE
, &state
->flags
);
1688 if (state
->n_wronly
== 0) {
1689 clear_wr
|= test_and_clear_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
1690 clear_rdwr
|= test_and_clear_bit(NFS_O_RDWR_STATE
, &state
->flags
);
1693 spin_unlock(&state
->owner
->so_lock
);
1694 if (!clear_rd
&& !clear_wr
&& !clear_rdwr
) {
1695 /* Note: exit _without_ calling nfs4_close_done */
1696 task
->tk_action
= NULL
;
1699 nfs_fattr_init(calldata
->res
.fattr
);
1700 if (test_bit(NFS_O_RDONLY_STATE
, &state
->flags
) != 0) {
1701 task
->tk_msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_OPEN_DOWNGRADE
];
1702 calldata
->arg
.fmode
= FMODE_READ
;
1703 } else if (test_bit(NFS_O_WRONLY_STATE
, &state
->flags
) != 0) {
1704 task
->tk_msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_OPEN_DOWNGRADE
];
1705 calldata
->arg
.fmode
= FMODE_WRITE
;
1707 calldata
->timestamp
= jiffies
;
1708 if (nfs4_setup_sequence((NFS_SERVER(calldata
->inode
))->nfs_client
,
1709 &calldata
->arg
.seq_args
, &calldata
->res
.seq_res
,
1712 rpc_call_start(task
);
1715 static const struct rpc_call_ops nfs4_close_ops
= {
1716 .rpc_call_prepare
= nfs4_close_prepare
,
1717 .rpc_call_done
= nfs4_close_done
,
1718 .rpc_release
= nfs4_free_closedata
,
1722 * It is possible for data to be read/written from a mem-mapped file
1723 * after the sys_close call (which hits the vfs layer as a flush).
1724 * This means that we can't safely call nfsv4 close on a file until
1725 * the inode is cleared. This in turn means that we are not good
1726 * NFSv4 citizens - we do not indicate to the server to update the file's
1727 * share state even when we are done with one of the three share
1728 * stateid's in the inode.
1730 * NOTE: Caller must be holding the sp->so_owner semaphore!
1732 int nfs4_do_close(struct path
*path
, struct nfs4_state
*state
, int wait
)
1734 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
1735 struct nfs4_closedata
*calldata
;
1736 struct nfs4_state_owner
*sp
= state
->owner
;
1737 struct rpc_task
*task
;
1738 struct rpc_message msg
= {
1739 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_CLOSE
],
1740 .rpc_cred
= state
->owner
->so_cred
,
1742 struct rpc_task_setup task_setup_data
= {
1743 .rpc_client
= server
->client
,
1744 .rpc_message
= &msg
,
1745 .callback_ops
= &nfs4_close_ops
,
1746 .workqueue
= nfsiod_workqueue
,
1747 .flags
= RPC_TASK_ASYNC
,
1749 int status
= -ENOMEM
;
1751 calldata
= kzalloc(sizeof(*calldata
), GFP_KERNEL
);
1752 if (calldata
== NULL
)
1754 calldata
->inode
= state
->inode
;
1755 calldata
->state
= state
;
1756 calldata
->arg
.fh
= NFS_FH(state
->inode
);
1757 calldata
->arg
.stateid
= &state
->open_stateid
;
1758 /* Serialization for the sequence id */
1759 calldata
->arg
.seqid
= nfs_alloc_seqid(&state
->owner
->so_seqid
);
1760 if (calldata
->arg
.seqid
== NULL
)
1761 goto out_free_calldata
;
1762 calldata
->arg
.fmode
= 0;
1763 calldata
->arg
.bitmask
= server
->cache_consistency_bitmask
;
1764 calldata
->res
.fattr
= &calldata
->fattr
;
1765 calldata
->res
.seqid
= calldata
->arg
.seqid
;
1766 calldata
->res
.server
= server
;
1767 calldata
->res
.seq_res
.sr_slotid
= NFS4_MAX_SLOT_TABLE
;
1768 calldata
->path
.mnt
= mntget(path
->mnt
);
1769 calldata
->path
.dentry
= dget(path
->dentry
);
1771 msg
.rpc_argp
= &calldata
->arg
,
1772 msg
.rpc_resp
= &calldata
->res
,
1773 task_setup_data
.callback_data
= calldata
;
1774 task
= rpc_run_task(&task_setup_data
);
1776 return PTR_ERR(task
);
1779 status
= rpc_wait_for_completion_task(task
);
1785 nfs4_put_open_state(state
);
1786 nfs4_put_state_owner(sp
);
1790 static int nfs4_intent_set_file(struct nameidata
*nd
, struct path
*path
, struct nfs4_state
*state
, fmode_t fmode
)
1795 /* If the open_intent is for execute, we have an extra check to make */
1796 if (fmode
& FMODE_EXEC
) {
1797 ret
= nfs_may_open(state
->inode
,
1798 state
->owner
->so_cred
,
1799 nd
->intent
.open
.flags
);
1803 filp
= lookup_instantiate_filp(nd
, path
->dentry
, NULL
);
1804 if (!IS_ERR(filp
)) {
1805 struct nfs_open_context
*ctx
;
1806 ctx
= nfs_file_open_context(filp
);
1810 ret
= PTR_ERR(filp
);
1812 nfs4_close_sync(path
, state
, fmode
& (FMODE_READ
|FMODE_WRITE
));
1817 nfs4_atomic_open(struct inode
*dir
, struct dentry
*dentry
, struct nameidata
*nd
)
1819 struct path path
= {
1820 .mnt
= nd
->path
.mnt
,
1823 struct dentry
*parent
;
1825 struct rpc_cred
*cred
;
1826 struct nfs4_state
*state
;
1828 fmode_t fmode
= nd
->intent
.open
.flags
& (FMODE_READ
| FMODE_WRITE
| FMODE_EXEC
);
1830 if (nd
->flags
& LOOKUP_CREATE
) {
1831 attr
.ia_mode
= nd
->intent
.open
.create_mode
;
1832 attr
.ia_valid
= ATTR_MODE
;
1833 if (!IS_POSIXACL(dir
))
1834 attr
.ia_mode
&= ~current_umask();
1837 BUG_ON(nd
->intent
.open
.flags
& O_CREAT
);
1840 cred
= rpc_lookup_cred();
1842 return (struct dentry
*)cred
;
1843 parent
= dentry
->d_parent
;
1844 /* Protect against concurrent sillydeletes */
1845 nfs_block_sillyrename(parent
);
1846 state
= nfs4_do_open(dir
, &path
, fmode
, nd
->intent
.open
.flags
, &attr
, cred
);
1848 if (IS_ERR(state
)) {
1849 if (PTR_ERR(state
) == -ENOENT
) {
1850 d_add(dentry
, NULL
);
1851 nfs_set_verifier(dentry
, nfs_save_change_attribute(dir
));
1853 nfs_unblock_sillyrename(parent
);
1854 return (struct dentry
*)state
;
1856 res
= d_add_unique(dentry
, igrab(state
->inode
));
1859 nfs_set_verifier(path
.dentry
, nfs_save_change_attribute(dir
));
1860 nfs_unblock_sillyrename(parent
);
1861 nfs4_intent_set_file(nd
, &path
, state
, fmode
);
1866 nfs4_open_revalidate(struct inode
*dir
, struct dentry
*dentry
, int openflags
, struct nameidata
*nd
)
1868 struct path path
= {
1869 .mnt
= nd
->path
.mnt
,
1872 struct rpc_cred
*cred
;
1873 struct nfs4_state
*state
;
1874 fmode_t fmode
= openflags
& (FMODE_READ
| FMODE_WRITE
);
1876 cred
= rpc_lookup_cred();
1878 return PTR_ERR(cred
);
1879 state
= nfs4_do_open(dir
, &path
, fmode
, openflags
, NULL
, cred
);
1881 if (IS_ERR(state
)) {
1882 switch (PTR_ERR(state
)) {
1888 lookup_instantiate_filp(nd
, (struct dentry
*)state
, NULL
);
1894 if (state
->inode
== dentry
->d_inode
) {
1895 nfs_set_verifier(dentry
, nfs_save_change_attribute(dir
));
1896 nfs4_intent_set_file(nd
, &path
, state
, fmode
);
1899 nfs4_close_sync(&path
, state
, fmode
);
1905 void nfs4_close_context(struct nfs_open_context
*ctx
, int is_sync
)
1907 if (ctx
->state
== NULL
)
1910 nfs4_close_sync(&ctx
->path
, ctx
->state
, ctx
->mode
);
1912 nfs4_close_state(&ctx
->path
, ctx
->state
, ctx
->mode
);
1915 static int _nfs4_server_capabilities(struct nfs_server
*server
, struct nfs_fh
*fhandle
)
1917 struct nfs4_server_caps_arg args
= {
1920 struct nfs4_server_caps_res res
= {};
1921 struct rpc_message msg
= {
1922 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SERVER_CAPS
],
1928 status
= nfs4_call_sync(server
, &msg
, &args
, &res
, 0);
1930 memcpy(server
->attr_bitmask
, res
.attr_bitmask
, sizeof(server
->attr_bitmask
));
1931 if (res
.attr_bitmask
[0] & FATTR4_WORD0_ACL
)
1932 server
->caps
|= NFS_CAP_ACLS
;
1933 if (res
.has_links
!= 0)
1934 server
->caps
|= NFS_CAP_HARDLINKS
;
1935 if (res
.has_symlinks
!= 0)
1936 server
->caps
|= NFS_CAP_SYMLINKS
;
1937 memcpy(server
->cache_consistency_bitmask
, res
.attr_bitmask
, sizeof(server
->cache_consistency_bitmask
));
1938 server
->cache_consistency_bitmask
[0] &= FATTR4_WORD0_CHANGE
|FATTR4_WORD0_SIZE
;
1939 server
->cache_consistency_bitmask
[1] &= FATTR4_WORD1_TIME_METADATA
|FATTR4_WORD1_TIME_MODIFY
;
1940 server
->acl_bitmask
= res
.acl_bitmask
;
1946 int nfs4_server_capabilities(struct nfs_server
*server
, struct nfs_fh
*fhandle
)
1948 struct nfs4_exception exception
= { };
1951 err
= nfs4_handle_exception(server
,
1952 _nfs4_server_capabilities(server
, fhandle
),
1954 } while (exception
.retry
);
1958 static int _nfs4_lookup_root(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
1959 struct nfs_fsinfo
*info
)
1961 struct nfs4_lookup_root_arg args
= {
1962 .bitmask
= nfs4_fattr_bitmap
,
1964 struct nfs4_lookup_res res
= {
1966 .fattr
= info
->fattr
,
1969 struct rpc_message msg
= {
1970 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOOKUP_ROOT
],
1974 nfs_fattr_init(info
->fattr
);
1975 return nfs4_call_sync(server
, &msg
, &args
, &res
, 0);
1978 static int nfs4_lookup_root(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
1979 struct nfs_fsinfo
*info
)
1981 struct nfs4_exception exception
= { };
1984 err
= nfs4_handle_exception(server
,
1985 _nfs4_lookup_root(server
, fhandle
, info
),
1987 } while (exception
.retry
);
1992 * get the file handle for the "/" directory on the server
1994 static int nfs4_proc_get_root(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
1995 struct nfs_fsinfo
*info
)
1999 status
= nfs4_lookup_root(server
, fhandle
, info
);
2001 status
= nfs4_server_capabilities(server
, fhandle
);
2003 status
= nfs4_do_fsinfo(server
, fhandle
, info
);
2004 return nfs4_map_errors(status
);
2008 * Get locations and (maybe) other attributes of a referral.
2009 * Note that we'll actually follow the referral later when
2010 * we detect fsid mismatch in inode revalidation
2012 static int nfs4_get_referral(struct inode
*dir
, const struct qstr
*name
, struct nfs_fattr
*fattr
, struct nfs_fh
*fhandle
)
2014 int status
= -ENOMEM
;
2015 struct page
*page
= NULL
;
2016 struct nfs4_fs_locations
*locations
= NULL
;
2018 page
= alloc_page(GFP_KERNEL
);
2021 locations
= kmalloc(sizeof(struct nfs4_fs_locations
), GFP_KERNEL
);
2022 if (locations
== NULL
)
2025 status
= nfs4_proc_fs_locations(dir
, name
, locations
, page
);
2028 /* Make sure server returned a different fsid for the referral */
2029 if (nfs_fsid_equal(&NFS_SERVER(dir
)->fsid
, &locations
->fattr
.fsid
)) {
2030 dprintk("%s: server did not return a different fsid for a referral at %s\n", __func__
, name
->name
);
2035 memcpy(fattr
, &locations
->fattr
, sizeof(struct nfs_fattr
));
2036 fattr
->valid
|= NFS_ATTR_FATTR_V4_REFERRAL
;
2038 fattr
->mode
= S_IFDIR
;
2039 memset(fhandle
, 0, sizeof(struct nfs_fh
));
2048 static int _nfs4_proc_getattr(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fattr
*fattr
)
2050 struct nfs4_getattr_arg args
= {
2052 .bitmask
= server
->attr_bitmask
,
2054 struct nfs4_getattr_res res
= {
2058 struct rpc_message msg
= {
2059 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GETATTR
],
2064 nfs_fattr_init(fattr
);
2065 return nfs4_call_sync(server
, &msg
, &args
, &res
, 0);
2068 static int nfs4_proc_getattr(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fattr
*fattr
)
2070 struct nfs4_exception exception
= { };
2073 err
= nfs4_handle_exception(server
,
2074 _nfs4_proc_getattr(server
, fhandle
, fattr
),
2076 } while (exception
.retry
);
2081 * The file is not closed if it is opened due to the a request to change
2082 * the size of the file. The open call will not be needed once the
2083 * VFS layer lookup-intents are implemented.
2085 * Close is called when the inode is destroyed.
2086 * If we haven't opened the file for O_WRONLY, we
2087 * need to in the size_change case to obtain a stateid.
2090 * Because OPEN is always done by name in nfsv4, it is
2091 * possible that we opened a different file by the same
2092 * name. We can recognize this race condition, but we
2093 * can't do anything about it besides returning an error.
2095 * This will be fixed with VFS changes (lookup-intent).
2098 nfs4_proc_setattr(struct dentry
*dentry
, struct nfs_fattr
*fattr
,
2099 struct iattr
*sattr
)
2101 struct inode
*inode
= dentry
->d_inode
;
2102 struct rpc_cred
*cred
= NULL
;
2103 struct nfs4_state
*state
= NULL
;
2106 nfs_fattr_init(fattr
);
2108 /* Search for an existing open(O_WRITE) file */
2109 if (sattr
->ia_valid
& ATTR_FILE
) {
2110 struct nfs_open_context
*ctx
;
2112 ctx
= nfs_file_open_context(sattr
->ia_file
);
2119 status
= nfs4_do_setattr(inode
, cred
, fattr
, sattr
, state
);
2121 nfs_setattr_update_inode(inode
, sattr
);
2125 static int _nfs4_proc_lookupfh(struct nfs_server
*server
, const struct nfs_fh
*dirfh
,
2126 const struct qstr
*name
, struct nfs_fh
*fhandle
,
2127 struct nfs_fattr
*fattr
)
2130 struct nfs4_lookup_arg args
= {
2131 .bitmask
= server
->attr_bitmask
,
2135 struct nfs4_lookup_res res
= {
2140 struct rpc_message msg
= {
2141 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOOKUP
],
2146 nfs_fattr_init(fattr
);
2148 dprintk("NFS call lookupfh %s\n", name
->name
);
2149 status
= nfs4_call_sync(server
, &msg
, &args
, &res
, 0);
2150 dprintk("NFS reply lookupfh: %d\n", status
);
2154 static int nfs4_proc_lookupfh(struct nfs_server
*server
, struct nfs_fh
*dirfh
,
2155 struct qstr
*name
, struct nfs_fh
*fhandle
,
2156 struct nfs_fattr
*fattr
)
2158 struct nfs4_exception exception
= { };
2161 err
= _nfs4_proc_lookupfh(server
, dirfh
, name
, fhandle
, fattr
);
2163 if (err
== -NFS4ERR_MOVED
) {
2167 err
= nfs4_handle_exception(server
, err
, &exception
);
2168 } while (exception
.retry
);
2172 static int _nfs4_proc_lookup(struct inode
*dir
, const struct qstr
*name
,
2173 struct nfs_fh
*fhandle
, struct nfs_fattr
*fattr
)
2177 dprintk("NFS call lookup %s\n", name
->name
);
2178 status
= _nfs4_proc_lookupfh(NFS_SERVER(dir
), NFS_FH(dir
), name
, fhandle
, fattr
);
2179 if (status
== -NFS4ERR_MOVED
)
2180 status
= nfs4_get_referral(dir
, name
, fattr
, fhandle
);
2181 dprintk("NFS reply lookup: %d\n", status
);
2185 static int nfs4_proc_lookup(struct inode
*dir
, struct qstr
*name
, struct nfs_fh
*fhandle
, struct nfs_fattr
*fattr
)
2187 struct nfs4_exception exception
= { };
2190 err
= nfs4_handle_exception(NFS_SERVER(dir
),
2191 _nfs4_proc_lookup(dir
, name
, fhandle
, fattr
),
2193 } while (exception
.retry
);
2197 static int _nfs4_proc_access(struct inode
*inode
, struct nfs_access_entry
*entry
)
2199 struct nfs_server
*server
= NFS_SERVER(inode
);
2200 struct nfs_fattr fattr
;
2201 struct nfs4_accessargs args
= {
2202 .fh
= NFS_FH(inode
),
2203 .bitmask
= server
->attr_bitmask
,
2205 struct nfs4_accessres res
= {
2209 struct rpc_message msg
= {
2210 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_ACCESS
],
2213 .rpc_cred
= entry
->cred
,
2215 int mode
= entry
->mask
;
2219 * Determine which access bits we want to ask for...
2221 if (mode
& MAY_READ
)
2222 args
.access
|= NFS4_ACCESS_READ
;
2223 if (S_ISDIR(inode
->i_mode
)) {
2224 if (mode
& MAY_WRITE
)
2225 args
.access
|= NFS4_ACCESS_MODIFY
| NFS4_ACCESS_EXTEND
| NFS4_ACCESS_DELETE
;
2226 if (mode
& MAY_EXEC
)
2227 args
.access
|= NFS4_ACCESS_LOOKUP
;
2229 if (mode
& MAY_WRITE
)
2230 args
.access
|= NFS4_ACCESS_MODIFY
| NFS4_ACCESS_EXTEND
;
2231 if (mode
& MAY_EXEC
)
2232 args
.access
|= NFS4_ACCESS_EXECUTE
;
2234 nfs_fattr_init(&fattr
);
2235 status
= nfs4_call_sync(server
, &msg
, &args
, &res
, 0);
2238 if (res
.access
& NFS4_ACCESS_READ
)
2239 entry
->mask
|= MAY_READ
;
2240 if (res
.access
& (NFS4_ACCESS_MODIFY
| NFS4_ACCESS_EXTEND
| NFS4_ACCESS_DELETE
))
2241 entry
->mask
|= MAY_WRITE
;
2242 if (res
.access
& (NFS4_ACCESS_LOOKUP
|NFS4_ACCESS_EXECUTE
))
2243 entry
->mask
|= MAY_EXEC
;
2244 nfs_refresh_inode(inode
, &fattr
);
2249 static int nfs4_proc_access(struct inode
*inode
, struct nfs_access_entry
*entry
)
2251 struct nfs4_exception exception
= { };
2254 err
= nfs4_handle_exception(NFS_SERVER(inode
),
2255 _nfs4_proc_access(inode
, entry
),
2257 } while (exception
.retry
);
2262 * TODO: For the time being, we don't try to get any attributes
2263 * along with any of the zero-copy operations READ, READDIR,
2266 * In the case of the first three, we want to put the GETATTR
2267 * after the read-type operation -- this is because it is hard
2268 * to predict the length of a GETATTR response in v4, and thus
2269 * align the READ data correctly. This means that the GETATTR
2270 * may end up partially falling into the page cache, and we should
2271 * shift it into the 'tail' of the xdr_buf before processing.
2272 * To do this efficiently, we need to know the total length
2273 * of data received, which doesn't seem to be available outside
2276 * In the case of WRITE, we also want to put the GETATTR after
2277 * the operation -- in this case because we want to make sure
2278 * we get the post-operation mtime and size. This means that
2279 * we can't use xdr_encode_pages() as written: we need a variant
2280 * of it which would leave room in the 'tail' iovec.
2282 * Both of these changes to the XDR layer would in fact be quite
2283 * minor, but I decided to leave them for a subsequent patch.
2285 static int _nfs4_proc_readlink(struct inode
*inode
, struct page
*page
,
2286 unsigned int pgbase
, unsigned int pglen
)
2288 struct nfs4_readlink args
= {
2289 .fh
= NFS_FH(inode
),
2294 struct nfs4_readlink_res res
;
2295 struct rpc_message msg
= {
2296 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_READLINK
],
2301 return nfs4_call_sync(NFS_SERVER(inode
), &msg
, &args
, &res
, 0);
2304 static int nfs4_proc_readlink(struct inode
*inode
, struct page
*page
,
2305 unsigned int pgbase
, unsigned int pglen
)
2307 struct nfs4_exception exception
= { };
2310 err
= nfs4_handle_exception(NFS_SERVER(inode
),
2311 _nfs4_proc_readlink(inode
, page
, pgbase
, pglen
),
2313 } while (exception
.retry
);
2319 * We will need to arrange for the VFS layer to provide an atomic open.
2320 * Until then, this create/open method is prone to inefficiency and race
2321 * conditions due to the lookup, create, and open VFS calls from sys_open()
2322 * placed on the wire.
2324 * Given the above sorry state of affairs, I'm simply sending an OPEN.
2325 * The file will be opened again in the subsequent VFS open call
2326 * (nfs4_proc_file_open).
2328 * The open for read will just hang around to be used by any process that
2329 * opens the file O_RDONLY. This will all be resolved with the VFS changes.
2333 nfs4_proc_create(struct inode
*dir
, struct dentry
*dentry
, struct iattr
*sattr
,
2334 int flags
, struct nameidata
*nd
)
2336 struct path path
= {
2337 .mnt
= nd
->path
.mnt
,
2340 struct nfs4_state
*state
;
2341 struct rpc_cred
*cred
;
2342 fmode_t fmode
= flags
& (FMODE_READ
| FMODE_WRITE
);
2345 cred
= rpc_lookup_cred();
2347 status
= PTR_ERR(cred
);
2350 state
= nfs4_do_open(dir
, &path
, fmode
, flags
, sattr
, cred
);
2352 if (IS_ERR(state
)) {
2353 status
= PTR_ERR(state
);
2356 d_add(dentry
, igrab(state
->inode
));
2357 nfs_set_verifier(dentry
, nfs_save_change_attribute(dir
));
2358 if (flags
& O_EXCL
) {
2359 struct nfs_fattr fattr
;
2360 status
= nfs4_do_setattr(state
->inode
, cred
, &fattr
, sattr
, state
);
2362 nfs_setattr_update_inode(state
->inode
, sattr
);
2363 nfs_post_op_update_inode(state
->inode
, &fattr
);
2365 if (status
== 0 && (nd
->flags
& LOOKUP_OPEN
) != 0)
2366 status
= nfs4_intent_set_file(nd
, &path
, state
, fmode
);
2368 nfs4_close_sync(&path
, state
, fmode
);
2375 static int _nfs4_proc_remove(struct inode
*dir
, struct qstr
*name
)
2377 struct nfs_server
*server
= NFS_SERVER(dir
);
2378 struct nfs_removeargs args
= {
2380 .name
.len
= name
->len
,
2381 .name
.name
= name
->name
,
2382 .bitmask
= server
->attr_bitmask
,
2384 struct nfs_removeres res
= {
2387 struct rpc_message msg
= {
2388 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_REMOVE
],
2394 nfs_fattr_init(&res
.dir_attr
);
2395 status
= nfs4_call_sync(server
, &msg
, &args
, &res
, 1);
2397 update_changeattr(dir
, &res
.cinfo
);
2398 nfs_post_op_update_inode(dir
, &res
.dir_attr
);
2403 static int nfs4_proc_remove(struct inode
*dir
, struct qstr
*name
)
2405 struct nfs4_exception exception
= { };
2408 err
= nfs4_handle_exception(NFS_SERVER(dir
),
2409 _nfs4_proc_remove(dir
, name
),
2411 } while (exception
.retry
);
2415 static void nfs4_proc_unlink_setup(struct rpc_message
*msg
, struct inode
*dir
)
2417 struct nfs_server
*server
= NFS_SERVER(dir
);
2418 struct nfs_removeargs
*args
= msg
->rpc_argp
;
2419 struct nfs_removeres
*res
= msg
->rpc_resp
;
2421 args
->bitmask
= server
->cache_consistency_bitmask
;
2422 res
->server
= server
;
2423 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_REMOVE
];
2426 static int nfs4_proc_unlink_done(struct rpc_task
*task
, struct inode
*dir
)
2428 struct nfs_removeres
*res
= task
->tk_msg
.rpc_resp
;
2430 nfs4_sequence_done(res
->server
, &res
->seq_res
, task
->tk_status
);
2431 if (nfs4_async_handle_error(task
, res
->server
, NULL
) == -EAGAIN
)
2433 nfs4_sequence_free_slot(res
->server
->nfs_client
, &res
->seq_res
);
2434 update_changeattr(dir
, &res
->cinfo
);
2435 nfs_post_op_update_inode(dir
, &res
->dir_attr
);
2439 static int _nfs4_proc_rename(struct inode
*old_dir
, struct qstr
*old_name
,
2440 struct inode
*new_dir
, struct qstr
*new_name
)
2442 struct nfs_server
*server
= NFS_SERVER(old_dir
);
2443 struct nfs4_rename_arg arg
= {
2444 .old_dir
= NFS_FH(old_dir
),
2445 .new_dir
= NFS_FH(new_dir
),
2446 .old_name
= old_name
,
2447 .new_name
= new_name
,
2448 .bitmask
= server
->attr_bitmask
,
2450 struct nfs_fattr old_fattr
, new_fattr
;
2451 struct nfs4_rename_res res
= {
2453 .old_fattr
= &old_fattr
,
2454 .new_fattr
= &new_fattr
,
2456 struct rpc_message msg
= {
2457 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RENAME
],
2463 nfs_fattr_init(res
.old_fattr
);
2464 nfs_fattr_init(res
.new_fattr
);
2465 status
= nfs4_call_sync(server
, &msg
, &arg
, &res
, 1);
2468 update_changeattr(old_dir
, &res
.old_cinfo
);
2469 nfs_post_op_update_inode(old_dir
, res
.old_fattr
);
2470 update_changeattr(new_dir
, &res
.new_cinfo
);
2471 nfs_post_op_update_inode(new_dir
, res
.new_fattr
);
2476 static int nfs4_proc_rename(struct inode
*old_dir
, struct qstr
*old_name
,
2477 struct inode
*new_dir
, struct qstr
*new_name
)
2479 struct nfs4_exception exception
= { };
2482 err
= nfs4_handle_exception(NFS_SERVER(old_dir
),
2483 _nfs4_proc_rename(old_dir
, old_name
,
2486 } while (exception
.retry
);
2490 static int _nfs4_proc_link(struct inode
*inode
, struct inode
*dir
, struct qstr
*name
)
2492 struct nfs_server
*server
= NFS_SERVER(inode
);
2493 struct nfs4_link_arg arg
= {
2494 .fh
= NFS_FH(inode
),
2495 .dir_fh
= NFS_FH(dir
),
2497 .bitmask
= server
->attr_bitmask
,
2499 struct nfs_fattr fattr
, dir_attr
;
2500 struct nfs4_link_res res
= {
2503 .dir_attr
= &dir_attr
,
2505 struct rpc_message msg
= {
2506 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LINK
],
2512 nfs_fattr_init(res
.fattr
);
2513 nfs_fattr_init(res
.dir_attr
);
2514 status
= nfs4_call_sync(server
, &msg
, &arg
, &res
, 1);
2516 update_changeattr(dir
, &res
.cinfo
);
2517 nfs_post_op_update_inode(dir
, res
.dir_attr
);
2518 nfs_post_op_update_inode(inode
, res
.fattr
);
2524 static int nfs4_proc_link(struct inode
*inode
, struct inode
*dir
, struct qstr
*name
)
2526 struct nfs4_exception exception
= { };
2529 err
= nfs4_handle_exception(NFS_SERVER(inode
),
2530 _nfs4_proc_link(inode
, dir
, name
),
2532 } while (exception
.retry
);
2536 struct nfs4_createdata
{
2537 struct rpc_message msg
;
2538 struct nfs4_create_arg arg
;
2539 struct nfs4_create_res res
;
2541 struct nfs_fattr fattr
;
2542 struct nfs_fattr dir_fattr
;
2545 static struct nfs4_createdata
*nfs4_alloc_createdata(struct inode
*dir
,
2546 struct qstr
*name
, struct iattr
*sattr
, u32 ftype
)
2548 struct nfs4_createdata
*data
;
2550 data
= kzalloc(sizeof(*data
), GFP_KERNEL
);
2552 struct nfs_server
*server
= NFS_SERVER(dir
);
2554 data
->msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_CREATE
];
2555 data
->msg
.rpc_argp
= &data
->arg
;
2556 data
->msg
.rpc_resp
= &data
->res
;
2557 data
->arg
.dir_fh
= NFS_FH(dir
);
2558 data
->arg
.server
= server
;
2559 data
->arg
.name
= name
;
2560 data
->arg
.attrs
= sattr
;
2561 data
->arg
.ftype
= ftype
;
2562 data
->arg
.bitmask
= server
->attr_bitmask
;
2563 data
->res
.server
= server
;
2564 data
->res
.fh
= &data
->fh
;
2565 data
->res
.fattr
= &data
->fattr
;
2566 data
->res
.dir_fattr
= &data
->dir_fattr
;
2567 nfs_fattr_init(data
->res
.fattr
);
2568 nfs_fattr_init(data
->res
.dir_fattr
);
2573 static int nfs4_do_create(struct inode
*dir
, struct dentry
*dentry
, struct nfs4_createdata
*data
)
2575 int status
= nfs4_call_sync(NFS_SERVER(dir
), &data
->msg
,
2576 &data
->arg
, &data
->res
, 1);
2578 update_changeattr(dir
, &data
->res
.dir_cinfo
);
2579 nfs_post_op_update_inode(dir
, data
->res
.dir_fattr
);
2580 status
= nfs_instantiate(dentry
, data
->res
.fh
, data
->res
.fattr
);
2585 static void nfs4_free_createdata(struct nfs4_createdata
*data
)
2590 static int _nfs4_proc_symlink(struct inode
*dir
, struct dentry
*dentry
,
2591 struct page
*page
, unsigned int len
, struct iattr
*sattr
)
2593 struct nfs4_createdata
*data
;
2594 int status
= -ENAMETOOLONG
;
2596 if (len
> NFS4_MAXPATHLEN
)
2600 data
= nfs4_alloc_createdata(dir
, &dentry
->d_name
, sattr
, NF4LNK
);
2604 data
->msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SYMLINK
];
2605 data
->arg
.u
.symlink
.pages
= &page
;
2606 data
->arg
.u
.symlink
.len
= len
;
2608 status
= nfs4_do_create(dir
, dentry
, data
);
2610 nfs4_free_createdata(data
);
2615 static int nfs4_proc_symlink(struct inode
*dir
, struct dentry
*dentry
,
2616 struct page
*page
, unsigned int len
, struct iattr
*sattr
)
2618 struct nfs4_exception exception
= { };
2621 err
= nfs4_handle_exception(NFS_SERVER(dir
),
2622 _nfs4_proc_symlink(dir
, dentry
, page
,
2625 } while (exception
.retry
);
2629 static int _nfs4_proc_mkdir(struct inode
*dir
, struct dentry
*dentry
,
2630 struct iattr
*sattr
)
2632 struct nfs4_createdata
*data
;
2633 int status
= -ENOMEM
;
2635 data
= nfs4_alloc_createdata(dir
, &dentry
->d_name
, sattr
, NF4DIR
);
2639 status
= nfs4_do_create(dir
, dentry
, data
);
2641 nfs4_free_createdata(data
);
2646 static int nfs4_proc_mkdir(struct inode
*dir
, struct dentry
*dentry
,
2647 struct iattr
*sattr
)
2649 struct nfs4_exception exception
= { };
2652 err
= nfs4_handle_exception(NFS_SERVER(dir
),
2653 _nfs4_proc_mkdir(dir
, dentry
, sattr
),
2655 } while (exception
.retry
);
2659 static int _nfs4_proc_readdir(struct dentry
*dentry
, struct rpc_cred
*cred
,
2660 u64 cookie
, struct page
*page
, unsigned int count
, int plus
)
2662 struct inode
*dir
= dentry
->d_inode
;
2663 struct nfs4_readdir_arg args
= {
2668 .bitmask
= NFS_SERVER(dentry
->d_inode
)->cache_consistency_bitmask
,
2670 struct nfs4_readdir_res res
;
2671 struct rpc_message msg
= {
2672 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_READDIR
],
2679 dprintk("%s: dentry = %s/%s, cookie = %Lu\n", __func__
,
2680 dentry
->d_parent
->d_name
.name
,
2681 dentry
->d_name
.name
,
2682 (unsigned long long)cookie
);
2683 nfs4_setup_readdir(cookie
, NFS_COOKIEVERF(dir
), dentry
, &args
);
2684 res
.pgbase
= args
.pgbase
;
2685 status
= nfs4_call_sync(NFS_SERVER(dir
), &msg
, &args
, &res
, 0);
2687 memcpy(NFS_COOKIEVERF(dir
), res
.verifier
.data
, NFS4_VERIFIER_SIZE
);
2689 nfs_invalidate_atime(dir
);
2691 dprintk("%s: returns %d\n", __func__
, status
);
2695 static int nfs4_proc_readdir(struct dentry
*dentry
, struct rpc_cred
*cred
,
2696 u64 cookie
, struct page
*page
, unsigned int count
, int plus
)
2698 struct nfs4_exception exception
= { };
2701 err
= nfs4_handle_exception(NFS_SERVER(dentry
->d_inode
),
2702 _nfs4_proc_readdir(dentry
, cred
, cookie
,
2705 } while (exception
.retry
);
2709 static int _nfs4_proc_mknod(struct inode
*dir
, struct dentry
*dentry
,
2710 struct iattr
*sattr
, dev_t rdev
)
2712 struct nfs4_createdata
*data
;
2713 int mode
= sattr
->ia_mode
;
2714 int status
= -ENOMEM
;
2716 BUG_ON(!(sattr
->ia_valid
& ATTR_MODE
));
2717 BUG_ON(!S_ISFIFO(mode
) && !S_ISBLK(mode
) && !S_ISCHR(mode
) && !S_ISSOCK(mode
));
2719 data
= nfs4_alloc_createdata(dir
, &dentry
->d_name
, sattr
, NF4SOCK
);
2724 data
->arg
.ftype
= NF4FIFO
;
2725 else if (S_ISBLK(mode
)) {
2726 data
->arg
.ftype
= NF4BLK
;
2727 data
->arg
.u
.device
.specdata1
= MAJOR(rdev
);
2728 data
->arg
.u
.device
.specdata2
= MINOR(rdev
);
2730 else if (S_ISCHR(mode
)) {
2731 data
->arg
.ftype
= NF4CHR
;
2732 data
->arg
.u
.device
.specdata1
= MAJOR(rdev
);
2733 data
->arg
.u
.device
.specdata2
= MINOR(rdev
);
2736 status
= nfs4_do_create(dir
, dentry
, data
);
2738 nfs4_free_createdata(data
);
2743 static int nfs4_proc_mknod(struct inode
*dir
, struct dentry
*dentry
,
2744 struct iattr
*sattr
, dev_t rdev
)
2746 struct nfs4_exception exception
= { };
2749 err
= nfs4_handle_exception(NFS_SERVER(dir
),
2750 _nfs4_proc_mknod(dir
, dentry
, sattr
, rdev
),
2752 } while (exception
.retry
);
2756 static int _nfs4_proc_statfs(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
2757 struct nfs_fsstat
*fsstat
)
2759 struct nfs4_statfs_arg args
= {
2761 .bitmask
= server
->attr_bitmask
,
2763 struct nfs4_statfs_res res
= {
2766 struct rpc_message msg
= {
2767 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_STATFS
],
2772 nfs_fattr_init(fsstat
->fattr
);
2773 return nfs4_call_sync(server
, &msg
, &args
, &res
, 0);
2776 static int nfs4_proc_statfs(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fsstat
*fsstat
)
2778 struct nfs4_exception exception
= { };
2781 err
= nfs4_handle_exception(server
,
2782 _nfs4_proc_statfs(server
, fhandle
, fsstat
),
2784 } while (exception
.retry
);
2788 static int _nfs4_do_fsinfo(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
2789 struct nfs_fsinfo
*fsinfo
)
2791 struct nfs4_fsinfo_arg args
= {
2793 .bitmask
= server
->attr_bitmask
,
2795 struct nfs4_fsinfo_res res
= {
2798 struct rpc_message msg
= {
2799 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_FSINFO
],
2804 return nfs4_call_sync(server
, &msg
, &args
, &res
, 0);
2807 static int nfs4_do_fsinfo(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fsinfo
*fsinfo
)
2809 struct nfs4_exception exception
= { };
2813 err
= nfs4_handle_exception(server
,
2814 _nfs4_do_fsinfo(server
, fhandle
, fsinfo
),
2816 } while (exception
.retry
);
2820 static int nfs4_proc_fsinfo(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fsinfo
*fsinfo
)
2822 nfs_fattr_init(fsinfo
->fattr
);
2823 return nfs4_do_fsinfo(server
, fhandle
, fsinfo
);
2826 static int _nfs4_proc_pathconf(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
2827 struct nfs_pathconf
*pathconf
)
2829 struct nfs4_pathconf_arg args
= {
2831 .bitmask
= server
->attr_bitmask
,
2833 struct nfs4_pathconf_res res
= {
2834 .pathconf
= pathconf
,
2836 struct rpc_message msg
= {
2837 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_PATHCONF
],
2842 /* None of the pathconf attributes are mandatory to implement */
2843 if ((args
.bitmask
[0] & nfs4_pathconf_bitmap
[0]) == 0) {
2844 memset(pathconf
, 0, sizeof(*pathconf
));
2848 nfs_fattr_init(pathconf
->fattr
);
2849 return nfs4_call_sync(server
, &msg
, &args
, &res
, 0);
2852 static int nfs4_proc_pathconf(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
2853 struct nfs_pathconf
*pathconf
)
2855 struct nfs4_exception exception
= { };
2859 err
= nfs4_handle_exception(server
,
2860 _nfs4_proc_pathconf(server
, fhandle
, pathconf
),
2862 } while (exception
.retry
);
2866 static int nfs4_read_done(struct rpc_task
*task
, struct nfs_read_data
*data
)
2868 struct nfs_server
*server
= NFS_SERVER(data
->inode
);
2870 dprintk("--> %s\n", __func__
);
2872 /* nfs4_sequence_free_slot called in the read rpc_call_done */
2873 nfs4_sequence_done(server
, &data
->res
.seq_res
, task
->tk_status
);
2875 if (nfs4_async_handle_error(task
, server
, data
->args
.context
->state
) == -EAGAIN
) {
2876 rpc_restart_call(task
);
2880 nfs_invalidate_atime(data
->inode
);
2881 if (task
->tk_status
> 0)
2882 renew_lease(server
, data
->timestamp
);
2886 static void nfs4_proc_read_setup(struct nfs_read_data
*data
, struct rpc_message
*msg
)
2888 data
->timestamp
= jiffies
;
2889 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_READ
];
2892 static int nfs4_write_done(struct rpc_task
*task
, struct nfs_write_data
*data
)
2894 struct inode
*inode
= data
->inode
;
2896 /* slot is freed in nfs_writeback_done */
2897 nfs4_sequence_done(NFS_SERVER(inode
), &data
->res
.seq_res
,
2900 if (nfs4_async_handle_error(task
, NFS_SERVER(inode
), data
->args
.context
->state
) == -EAGAIN
) {
2901 rpc_restart_call(task
);
2904 if (task
->tk_status
>= 0) {
2905 renew_lease(NFS_SERVER(inode
), data
->timestamp
);
2906 nfs_post_op_update_inode_force_wcc(inode
, data
->res
.fattr
);
2911 static void nfs4_proc_write_setup(struct nfs_write_data
*data
, struct rpc_message
*msg
)
2913 struct nfs_server
*server
= NFS_SERVER(data
->inode
);
2915 data
->args
.bitmask
= server
->cache_consistency_bitmask
;
2916 data
->res
.server
= server
;
2917 data
->timestamp
= jiffies
;
2919 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_WRITE
];
2922 static int nfs4_commit_done(struct rpc_task
*task
, struct nfs_write_data
*data
)
2924 struct inode
*inode
= data
->inode
;
2926 nfs4_sequence_done(NFS_SERVER(inode
), &data
->res
.seq_res
,
2928 if (nfs4_async_handle_error(task
, NFS_SERVER(inode
), NULL
) == -EAGAIN
) {
2929 rpc_restart_call(task
);
2932 nfs4_sequence_free_slot(NFS_SERVER(inode
)->nfs_client
,
2933 &data
->res
.seq_res
);
2934 nfs_refresh_inode(inode
, data
->res
.fattr
);
2938 static void nfs4_proc_commit_setup(struct nfs_write_data
*data
, struct rpc_message
*msg
)
2940 struct nfs_server
*server
= NFS_SERVER(data
->inode
);
2942 data
->args
.bitmask
= server
->cache_consistency_bitmask
;
2943 data
->res
.server
= server
;
2944 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_COMMIT
];
2948 * nfs4_proc_async_renew(): This is not one of the nfs_rpc_ops; it is a special
2949 * standalone procedure for queueing an asynchronous RENEW.
2951 static void nfs4_renew_done(struct rpc_task
*task
, void *data
)
2953 struct nfs_client
*clp
= (struct nfs_client
*)task
->tk_msg
.rpc_argp
;
2954 unsigned long timestamp
= (unsigned long)data
;
2956 if (task
->tk_status
< 0) {
2957 /* Unless we're shutting down, schedule state recovery! */
2958 if (test_bit(NFS_CS_RENEWD
, &clp
->cl_res_state
) != 0)
2959 nfs4_schedule_state_recovery(clp
);
2962 spin_lock(&clp
->cl_lock
);
2963 if (time_before(clp
->cl_last_renewal
,timestamp
))
2964 clp
->cl_last_renewal
= timestamp
;
2965 spin_unlock(&clp
->cl_lock
);
2968 static const struct rpc_call_ops nfs4_renew_ops
= {
2969 .rpc_call_done
= nfs4_renew_done
,
2972 int nfs4_proc_async_renew(struct nfs_client
*clp
, struct rpc_cred
*cred
)
2974 struct rpc_message msg
= {
2975 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RENEW
],
2980 return rpc_call_async(clp
->cl_rpcclient
, &msg
, RPC_TASK_SOFT
,
2981 &nfs4_renew_ops
, (void *)jiffies
);
2984 int nfs4_proc_renew(struct nfs_client
*clp
, struct rpc_cred
*cred
)
2986 struct rpc_message msg
= {
2987 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RENEW
],
2991 unsigned long now
= jiffies
;
2994 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, 0);
2997 spin_lock(&clp
->cl_lock
);
2998 if (time_before(clp
->cl_last_renewal
,now
))
2999 clp
->cl_last_renewal
= now
;
3000 spin_unlock(&clp
->cl_lock
);
3004 static inline int nfs4_server_supports_acls(struct nfs_server
*server
)
3006 return (server
->caps
& NFS_CAP_ACLS
)
3007 && (server
->acl_bitmask
& ACL4_SUPPORT_ALLOW_ACL
)
3008 && (server
->acl_bitmask
& ACL4_SUPPORT_DENY_ACL
);
3011 /* Assuming that XATTR_SIZE_MAX is a multiple of PAGE_CACHE_SIZE, and that
3012 * it's OK to put sizeof(void) * (XATTR_SIZE_MAX/PAGE_CACHE_SIZE) bytes on
3015 #define NFS4ACL_MAXPAGES (XATTR_SIZE_MAX >> PAGE_CACHE_SHIFT)
3017 static void buf_to_pages(const void *buf
, size_t buflen
,
3018 struct page
**pages
, unsigned int *pgbase
)
3020 const void *p
= buf
;
3022 *pgbase
= offset_in_page(buf
);
3024 while (p
< buf
+ buflen
) {
3025 *(pages
++) = virt_to_page(p
);
3026 p
+= PAGE_CACHE_SIZE
;
3030 struct nfs4_cached_acl
{
3036 static void nfs4_set_cached_acl(struct inode
*inode
, struct nfs4_cached_acl
*acl
)
3038 struct nfs_inode
*nfsi
= NFS_I(inode
);
3040 spin_lock(&inode
->i_lock
);
3041 kfree(nfsi
->nfs4_acl
);
3042 nfsi
->nfs4_acl
= acl
;
3043 spin_unlock(&inode
->i_lock
);
3046 static void nfs4_zap_acl_attr(struct inode
*inode
)
3048 nfs4_set_cached_acl(inode
, NULL
);
3051 static inline ssize_t
nfs4_read_cached_acl(struct inode
*inode
, char *buf
, size_t buflen
)
3053 struct nfs_inode
*nfsi
= NFS_I(inode
);
3054 struct nfs4_cached_acl
*acl
;
3057 spin_lock(&inode
->i_lock
);
3058 acl
= nfsi
->nfs4_acl
;
3061 if (buf
== NULL
) /* user is just asking for length */
3063 if (acl
->cached
== 0)
3065 ret
= -ERANGE
; /* see getxattr(2) man page */
3066 if (acl
->len
> buflen
)
3068 memcpy(buf
, acl
->data
, acl
->len
);
3072 spin_unlock(&inode
->i_lock
);
3076 static void nfs4_write_cached_acl(struct inode
*inode
, const char *buf
, size_t acl_len
)
3078 struct nfs4_cached_acl
*acl
;
3080 if (buf
&& acl_len
<= PAGE_SIZE
) {
3081 acl
= kmalloc(sizeof(*acl
) + acl_len
, GFP_KERNEL
);
3085 memcpy(acl
->data
, buf
, acl_len
);
3087 acl
= kmalloc(sizeof(*acl
), GFP_KERNEL
);
3094 nfs4_set_cached_acl(inode
, acl
);
3097 static ssize_t
__nfs4_get_acl_uncached(struct inode
*inode
, void *buf
, size_t buflen
)
3099 struct page
*pages
[NFS4ACL_MAXPAGES
];
3100 struct nfs_getaclargs args
= {
3101 .fh
= NFS_FH(inode
),
3105 struct nfs_getaclres res
= {
3109 struct rpc_message msg
= {
3110 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GETACL
],
3114 struct page
*localpage
= NULL
;
3117 if (buflen
< PAGE_SIZE
) {
3118 /* As long as we're doing a round trip to the server anyway,
3119 * let's be prepared for a page of acl data. */
3120 localpage
= alloc_page(GFP_KERNEL
);
3121 resp_buf
= page_address(localpage
);
3122 if (localpage
== NULL
)
3124 args
.acl_pages
[0] = localpage
;
3125 args
.acl_pgbase
= 0;
3126 args
.acl_len
= PAGE_SIZE
;
3129 buf_to_pages(buf
, buflen
, args
.acl_pages
, &args
.acl_pgbase
);
3131 ret
= nfs4_call_sync(NFS_SERVER(inode
), &msg
, &args
, &res
, 0);
3134 if (res
.acl_len
> args
.acl_len
)
3135 nfs4_write_cached_acl(inode
, NULL
, res
.acl_len
);
3137 nfs4_write_cached_acl(inode
, resp_buf
, res
.acl_len
);
3140 if (res
.acl_len
> buflen
)
3143 memcpy(buf
, resp_buf
, res
.acl_len
);
3148 __free_page(localpage
);
3152 static ssize_t
nfs4_get_acl_uncached(struct inode
*inode
, void *buf
, size_t buflen
)
3154 struct nfs4_exception exception
= { };
3157 ret
= __nfs4_get_acl_uncached(inode
, buf
, buflen
);
3160 ret
= nfs4_handle_exception(NFS_SERVER(inode
), ret
, &exception
);
3161 } while (exception
.retry
);
3165 static ssize_t
nfs4_proc_get_acl(struct inode
*inode
, void *buf
, size_t buflen
)
3167 struct nfs_server
*server
= NFS_SERVER(inode
);
3170 if (!nfs4_server_supports_acls(server
))
3172 ret
= nfs_revalidate_inode(server
, inode
);
3175 if (NFS_I(inode
)->cache_validity
& NFS_INO_INVALID_ACL
)
3176 nfs_zap_acl_cache(inode
);
3177 ret
= nfs4_read_cached_acl(inode
, buf
, buflen
);
3180 return nfs4_get_acl_uncached(inode
, buf
, buflen
);
3183 static int __nfs4_proc_set_acl(struct inode
*inode
, const void *buf
, size_t buflen
)
3185 struct nfs_server
*server
= NFS_SERVER(inode
);
3186 struct page
*pages
[NFS4ACL_MAXPAGES
];
3187 struct nfs_setaclargs arg
= {
3188 .fh
= NFS_FH(inode
),
3192 struct nfs_setaclres res
;
3193 struct rpc_message msg
= {
3194 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETACL
],
3200 if (!nfs4_server_supports_acls(server
))
3202 nfs_inode_return_delegation(inode
);
3203 buf_to_pages(buf
, buflen
, arg
.acl_pages
, &arg
.acl_pgbase
);
3204 ret
= nfs4_call_sync(server
, &msg
, &arg
, &res
, 1);
3205 nfs_access_zap_cache(inode
);
3206 nfs_zap_acl_cache(inode
);
3210 static int nfs4_proc_set_acl(struct inode
*inode
, const void *buf
, size_t buflen
)
3212 struct nfs4_exception exception
= { };
3215 err
= nfs4_handle_exception(NFS_SERVER(inode
),
3216 __nfs4_proc_set_acl(inode
, buf
, buflen
),
3218 } while (exception
.retry
);
3223 nfs4_async_handle_error(struct rpc_task
*task
, const struct nfs_server
*server
, struct nfs4_state
*state
)
3225 struct nfs_client
*clp
= server
->nfs_client
;
3227 if (!clp
|| task
->tk_status
>= 0)
3229 switch(task
->tk_status
) {
3230 case -NFS4ERR_ADMIN_REVOKED
:
3231 case -NFS4ERR_BAD_STATEID
:
3232 case -NFS4ERR_OPENMODE
:
3235 nfs4_state_mark_reclaim_nograce(clp
, state
);
3236 case -NFS4ERR_STALE_CLIENTID
:
3237 case -NFS4ERR_STALE_STATEID
:
3238 case -NFS4ERR_EXPIRED
:
3239 rpc_sleep_on(&clp
->cl_rpcwaitq
, task
, NULL
);
3240 nfs4_schedule_state_recovery(clp
);
3241 if (test_bit(NFS4CLNT_MANAGER_RUNNING
, &clp
->cl_state
) == 0)
3242 rpc_wake_up_queued_task(&clp
->cl_rpcwaitq
, task
);
3243 task
->tk_status
= 0;
3245 case -NFS4ERR_DELAY
:
3246 nfs_inc_server_stats(server
, NFSIOS_DELAY
);
3247 case -NFS4ERR_GRACE
:
3248 rpc_delay(task
, NFS4_POLL_RETRY_MAX
);
3249 task
->tk_status
= 0;
3251 case -NFS4ERR_OLD_STATEID
:
3252 task
->tk_status
= 0;
3255 task
->tk_status
= nfs4_map_errors(task
->tk_status
);
3259 int nfs4_proc_setclientid(struct nfs_client
*clp
, u32 program
, unsigned short port
, struct rpc_cred
*cred
)
3261 nfs4_verifier sc_verifier
;
3262 struct nfs4_setclientid setclientid
= {
3263 .sc_verifier
= &sc_verifier
,
3266 struct rpc_message msg
= {
3267 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETCLIENTID
],
3268 .rpc_argp
= &setclientid
,
3276 p
= (__be32
*)sc_verifier
.data
;
3277 *p
++ = htonl((u32
)clp
->cl_boot_time
.tv_sec
);
3278 *p
= htonl((u32
)clp
->cl_boot_time
.tv_nsec
);
3281 setclientid
.sc_name_len
= scnprintf(setclientid
.sc_name
,
3282 sizeof(setclientid
.sc_name
), "%s/%s %s %s %u",
3284 rpc_peeraddr2str(clp
->cl_rpcclient
,
3286 rpc_peeraddr2str(clp
->cl_rpcclient
,
3288 clp
->cl_rpcclient
->cl_auth
->au_ops
->au_name
,
3289 clp
->cl_id_uniquifier
);
3290 setclientid
.sc_netid_len
= scnprintf(setclientid
.sc_netid
,
3291 sizeof(setclientid
.sc_netid
),
3292 rpc_peeraddr2str(clp
->cl_rpcclient
,
3293 RPC_DISPLAY_NETID
));
3294 setclientid
.sc_uaddr_len
= scnprintf(setclientid
.sc_uaddr
,
3295 sizeof(setclientid
.sc_uaddr
), "%s.%u.%u",
3296 clp
->cl_ipaddr
, port
>> 8, port
& 255);
3298 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, 0);
3299 if (status
!= -NFS4ERR_CLID_INUSE
)
3304 ssleep(clp
->cl_lease_time
+ 1);
3306 if (++clp
->cl_id_uniquifier
== 0)
3312 static int _nfs4_proc_setclientid_confirm(struct nfs_client
*clp
, struct rpc_cred
*cred
)
3314 struct nfs_fsinfo fsinfo
;
3315 struct rpc_message msg
= {
3316 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETCLIENTID_CONFIRM
],
3318 .rpc_resp
= &fsinfo
,
3325 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, 0);
3327 spin_lock(&clp
->cl_lock
);
3328 clp
->cl_lease_time
= fsinfo
.lease_time
* HZ
;
3329 clp
->cl_last_renewal
= now
;
3330 spin_unlock(&clp
->cl_lock
);
3335 int nfs4_proc_setclientid_confirm(struct nfs_client
*clp
, struct rpc_cred
*cred
)
3340 err
= _nfs4_proc_setclientid_confirm(clp
, cred
);
3344 case -NFS4ERR_RESOURCE
:
3345 /* The IBM lawyers misread another document! */
3346 case -NFS4ERR_DELAY
:
3347 err
= nfs4_delay(clp
->cl_rpcclient
, &timeout
);
3353 struct nfs4_delegreturndata
{
3354 struct nfs4_delegreturnargs args
;
3355 struct nfs4_delegreturnres res
;
3357 nfs4_stateid stateid
;
3358 unsigned long timestamp
;
3359 struct nfs_fattr fattr
;
3363 static void nfs4_delegreturn_done(struct rpc_task
*task
, void *calldata
)
3365 struct nfs4_delegreturndata
*data
= calldata
;
3367 nfs4_sequence_done_free_slot(data
->res
.server
, &data
->res
.seq_res
,
3370 data
->rpc_status
= task
->tk_status
;
3371 if (data
->rpc_status
== 0)
3372 renew_lease(data
->res
.server
, data
->timestamp
);
3375 static void nfs4_delegreturn_release(void *calldata
)
3380 #if defined(CONFIG_NFS_V4_1)
3381 static void nfs4_delegreturn_prepare(struct rpc_task
*task
, void *data
)
3383 struct nfs4_delegreturndata
*d_data
;
3385 d_data
= (struct nfs4_delegreturndata
*)data
;
3387 if (nfs4_setup_sequence(d_data
->res
.server
->nfs_client
,
3388 &d_data
->args
.seq_args
,
3389 &d_data
->res
.seq_res
, 1, task
))
3391 rpc_call_start(task
);
3393 #endif /* CONFIG_NFS_V4_1 */
3395 static const struct rpc_call_ops nfs4_delegreturn_ops
= {
3396 #if defined(CONFIG_NFS_V4_1)
3397 .rpc_call_prepare
= nfs4_delegreturn_prepare
,
3398 #endif /* CONFIG_NFS_V4_1 */
3399 .rpc_call_done
= nfs4_delegreturn_done
,
3400 .rpc_release
= nfs4_delegreturn_release
,
3403 static int _nfs4_proc_delegreturn(struct inode
*inode
, struct rpc_cred
*cred
, const nfs4_stateid
*stateid
, int issync
)
3405 struct nfs4_delegreturndata
*data
;
3406 struct nfs_server
*server
= NFS_SERVER(inode
);
3407 struct rpc_task
*task
;
3408 struct rpc_message msg
= {
3409 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_DELEGRETURN
],
3412 struct rpc_task_setup task_setup_data
= {
3413 .rpc_client
= server
->client
,
3414 .rpc_message
= &msg
,
3415 .callback_ops
= &nfs4_delegreturn_ops
,
3416 .flags
= RPC_TASK_ASYNC
,
3420 data
= kzalloc(sizeof(*data
), GFP_KERNEL
);
3423 data
->args
.fhandle
= &data
->fh
;
3424 data
->args
.stateid
= &data
->stateid
;
3425 data
->args
.bitmask
= server
->attr_bitmask
;
3426 nfs_copy_fh(&data
->fh
, NFS_FH(inode
));
3427 memcpy(&data
->stateid
, stateid
, sizeof(data
->stateid
));
3428 data
->res
.fattr
= &data
->fattr
;
3429 data
->res
.server
= server
;
3430 data
->res
.seq_res
.sr_slotid
= NFS4_MAX_SLOT_TABLE
;
3431 nfs_fattr_init(data
->res
.fattr
);
3432 data
->timestamp
= jiffies
;
3433 data
->rpc_status
= 0;
3435 task_setup_data
.callback_data
= data
;
3436 msg
.rpc_argp
= &data
->args
,
3437 msg
.rpc_resp
= &data
->res
,
3438 task
= rpc_run_task(&task_setup_data
);
3440 return PTR_ERR(task
);
3443 status
= nfs4_wait_for_completion_rpc_task(task
);
3446 status
= data
->rpc_status
;
3449 nfs_refresh_inode(inode
, &data
->fattr
);
3455 int nfs4_proc_delegreturn(struct inode
*inode
, struct rpc_cred
*cred
, const nfs4_stateid
*stateid
, int issync
)
3457 struct nfs_server
*server
= NFS_SERVER(inode
);
3458 struct nfs4_exception exception
= { };
3461 err
= _nfs4_proc_delegreturn(inode
, cred
, stateid
, issync
);
3463 case -NFS4ERR_STALE_STATEID
:
3464 case -NFS4ERR_EXPIRED
:
3468 err
= nfs4_handle_exception(server
, err
, &exception
);
3469 } while (exception
.retry
);
3473 #define NFS4_LOCK_MINTIMEOUT (1 * HZ)
3474 #define NFS4_LOCK_MAXTIMEOUT (30 * HZ)
3477 * sleep, with exponential backoff, and retry the LOCK operation.
3479 static unsigned long
3480 nfs4_set_lock_task_retry(unsigned long timeout
)
3482 schedule_timeout_killable(timeout
);
3484 if (timeout
> NFS4_LOCK_MAXTIMEOUT
)
3485 return NFS4_LOCK_MAXTIMEOUT
;
3489 static int _nfs4_proc_getlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
3491 struct inode
*inode
= state
->inode
;
3492 struct nfs_server
*server
= NFS_SERVER(inode
);
3493 struct nfs_client
*clp
= server
->nfs_client
;
3494 struct nfs_lockt_args arg
= {
3495 .fh
= NFS_FH(inode
),
3498 struct nfs_lockt_res res
= {
3501 struct rpc_message msg
= {
3502 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOCKT
],
3505 .rpc_cred
= state
->owner
->so_cred
,
3507 struct nfs4_lock_state
*lsp
;
3510 arg
.lock_owner
.clientid
= clp
->cl_clientid
;
3511 status
= nfs4_set_lock_state(state
, request
);
3514 lsp
= request
->fl_u
.nfs4_fl
.owner
;
3515 arg
.lock_owner
.id
= lsp
->ls_id
.id
;
3516 status
= nfs4_call_sync(server
, &msg
, &arg
, &res
, 1);
3519 request
->fl_type
= F_UNLCK
;
3521 case -NFS4ERR_DENIED
:
3524 request
->fl_ops
->fl_release_private(request
);
3529 static int nfs4_proc_getlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
3531 struct nfs4_exception exception
= { };
3535 err
= nfs4_handle_exception(NFS_SERVER(state
->inode
),
3536 _nfs4_proc_getlk(state
, cmd
, request
),
3538 } while (exception
.retry
);
3542 static int do_vfs_lock(struct file
*file
, struct file_lock
*fl
)
3545 switch (fl
->fl_flags
& (FL_POSIX
|FL_FLOCK
)) {
3547 res
= posix_lock_file_wait(file
, fl
);
3550 res
= flock_lock_file_wait(file
, fl
);
3558 struct nfs4_unlockdata
{
3559 struct nfs_locku_args arg
;
3560 struct nfs_locku_res res
;
3561 struct nfs4_lock_state
*lsp
;
3562 struct nfs_open_context
*ctx
;
3563 struct file_lock fl
;
3564 const struct nfs_server
*server
;
3565 unsigned long timestamp
;
3568 static struct nfs4_unlockdata
*nfs4_alloc_unlockdata(struct file_lock
*fl
,
3569 struct nfs_open_context
*ctx
,
3570 struct nfs4_lock_state
*lsp
,
3571 struct nfs_seqid
*seqid
)
3573 struct nfs4_unlockdata
*p
;
3574 struct inode
*inode
= lsp
->ls_state
->inode
;
3576 p
= kzalloc(sizeof(*p
), GFP_KERNEL
);
3579 p
->arg
.fh
= NFS_FH(inode
);
3581 p
->arg
.seqid
= seqid
;
3582 p
->res
.seqid
= seqid
;
3583 p
->res
.seq_res
.sr_slotid
= NFS4_MAX_SLOT_TABLE
;
3584 p
->arg
.stateid
= &lsp
->ls_stateid
;
3586 atomic_inc(&lsp
->ls_count
);
3587 /* Ensure we don't close file until we're done freeing locks! */
3588 p
->ctx
= get_nfs_open_context(ctx
);
3589 memcpy(&p
->fl
, fl
, sizeof(p
->fl
));
3590 p
->server
= NFS_SERVER(inode
);
3594 static void nfs4_locku_release_calldata(void *data
)
3596 struct nfs4_unlockdata
*calldata
= data
;
3597 nfs_free_seqid(calldata
->arg
.seqid
);
3598 nfs4_put_lock_state(calldata
->lsp
);
3599 put_nfs_open_context(calldata
->ctx
);
3603 static void nfs4_locku_done(struct rpc_task
*task
, void *data
)
3605 struct nfs4_unlockdata
*calldata
= data
;
3607 nfs4_sequence_done(calldata
->server
, &calldata
->res
.seq_res
,
3609 if (RPC_ASSASSINATED(task
))
3611 switch (task
->tk_status
) {
3613 memcpy(calldata
->lsp
->ls_stateid
.data
,
3614 calldata
->res
.stateid
.data
,
3615 sizeof(calldata
->lsp
->ls_stateid
.data
));
3616 renew_lease(calldata
->server
, calldata
->timestamp
);
3618 case -NFS4ERR_BAD_STATEID
:
3619 case -NFS4ERR_OLD_STATEID
:
3620 case -NFS4ERR_STALE_STATEID
:
3621 case -NFS4ERR_EXPIRED
:
3624 if (nfs4_async_handle_error(task
, calldata
->server
, NULL
) == -EAGAIN
)
3625 rpc_restart_call(task
);
3627 nfs4_sequence_free_slot(calldata
->server
->nfs_client
,
3628 &calldata
->res
.seq_res
);
3631 static void nfs4_locku_prepare(struct rpc_task
*task
, void *data
)
3633 struct nfs4_unlockdata
*calldata
= data
;
3635 if (nfs_wait_on_sequence(calldata
->arg
.seqid
, task
) != 0)
3637 if ((calldata
->lsp
->ls_flags
& NFS_LOCK_INITIALIZED
) == 0) {
3638 /* Note: exit _without_ running nfs4_locku_done */
3639 task
->tk_action
= NULL
;
3642 calldata
->timestamp
= jiffies
;
3643 if (nfs4_setup_sequence(calldata
->server
->nfs_client
,
3644 &calldata
->arg
.seq_args
,
3645 &calldata
->res
.seq_res
, 1, task
))
3647 rpc_call_start(task
);
3650 static const struct rpc_call_ops nfs4_locku_ops
= {
3651 .rpc_call_prepare
= nfs4_locku_prepare
,
3652 .rpc_call_done
= nfs4_locku_done
,
3653 .rpc_release
= nfs4_locku_release_calldata
,
3656 static struct rpc_task
*nfs4_do_unlck(struct file_lock
*fl
,
3657 struct nfs_open_context
*ctx
,
3658 struct nfs4_lock_state
*lsp
,
3659 struct nfs_seqid
*seqid
)
3661 struct nfs4_unlockdata
*data
;
3662 struct rpc_message msg
= {
3663 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOCKU
],
3664 .rpc_cred
= ctx
->cred
,
3666 struct rpc_task_setup task_setup_data
= {
3667 .rpc_client
= NFS_CLIENT(lsp
->ls_state
->inode
),
3668 .rpc_message
= &msg
,
3669 .callback_ops
= &nfs4_locku_ops
,
3670 .workqueue
= nfsiod_workqueue
,
3671 .flags
= RPC_TASK_ASYNC
,
3674 /* Ensure this is an unlock - when canceling a lock, the
3675 * canceled lock is passed in, and it won't be an unlock.
3677 fl
->fl_type
= F_UNLCK
;
3679 data
= nfs4_alloc_unlockdata(fl
, ctx
, lsp
, seqid
);
3681 nfs_free_seqid(seqid
);
3682 return ERR_PTR(-ENOMEM
);
3685 msg
.rpc_argp
= &data
->arg
,
3686 msg
.rpc_resp
= &data
->res
,
3687 task_setup_data
.callback_data
= data
;
3688 return rpc_run_task(&task_setup_data
);
3691 static int nfs4_proc_unlck(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
3693 struct nfs_inode
*nfsi
= NFS_I(state
->inode
);
3694 struct nfs_seqid
*seqid
;
3695 struct nfs4_lock_state
*lsp
;
3696 struct rpc_task
*task
;
3698 unsigned char fl_flags
= request
->fl_flags
;
3700 status
= nfs4_set_lock_state(state
, request
);
3701 /* Unlock _before_ we do the RPC call */
3702 request
->fl_flags
|= FL_EXISTS
;
3703 down_read(&nfsi
->rwsem
);
3704 if (do_vfs_lock(request
->fl_file
, request
) == -ENOENT
) {
3705 up_read(&nfsi
->rwsem
);
3708 up_read(&nfsi
->rwsem
);
3711 /* Is this a delegated lock? */
3712 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
))
3714 lsp
= request
->fl_u
.nfs4_fl
.owner
;
3715 seqid
= nfs_alloc_seqid(&lsp
->ls_seqid
);
3719 task
= nfs4_do_unlck(request
, nfs_file_open_context(request
->fl_file
), lsp
, seqid
);
3720 status
= PTR_ERR(task
);
3723 status
= nfs4_wait_for_completion_rpc_task(task
);
3726 request
->fl_flags
= fl_flags
;
3730 struct nfs4_lockdata
{
3731 struct nfs_lock_args arg
;
3732 struct nfs_lock_res res
;
3733 struct nfs4_lock_state
*lsp
;
3734 struct nfs_open_context
*ctx
;
3735 struct file_lock fl
;
3736 unsigned long timestamp
;
3739 struct nfs_server
*server
;
3742 static struct nfs4_lockdata
*nfs4_alloc_lockdata(struct file_lock
*fl
,
3743 struct nfs_open_context
*ctx
, struct nfs4_lock_state
*lsp
)
3745 struct nfs4_lockdata
*p
;
3746 struct inode
*inode
= lsp
->ls_state
->inode
;
3747 struct nfs_server
*server
= NFS_SERVER(inode
);
3749 p
= kzalloc(sizeof(*p
), GFP_KERNEL
);
3753 p
->arg
.fh
= NFS_FH(inode
);
3755 p
->arg
.open_seqid
= nfs_alloc_seqid(&lsp
->ls_state
->owner
->so_seqid
);
3756 if (p
->arg
.open_seqid
== NULL
)
3758 p
->arg
.lock_seqid
= nfs_alloc_seqid(&lsp
->ls_seqid
);
3759 if (p
->arg
.lock_seqid
== NULL
)
3760 goto out_free_seqid
;
3761 p
->arg
.lock_stateid
= &lsp
->ls_stateid
;
3762 p
->arg
.lock_owner
.clientid
= server
->nfs_client
->cl_clientid
;
3763 p
->arg
.lock_owner
.id
= lsp
->ls_id
.id
;
3764 p
->res
.lock_seqid
= p
->arg
.lock_seqid
;
3765 p
->res
.seq_res
.sr_slotid
= NFS4_MAX_SLOT_TABLE
;
3768 atomic_inc(&lsp
->ls_count
);
3769 p
->ctx
= get_nfs_open_context(ctx
);
3770 memcpy(&p
->fl
, fl
, sizeof(p
->fl
));
3773 nfs_free_seqid(p
->arg
.open_seqid
);
3779 static void nfs4_lock_prepare(struct rpc_task
*task
, void *calldata
)
3781 struct nfs4_lockdata
*data
= calldata
;
3782 struct nfs4_state
*state
= data
->lsp
->ls_state
;
3784 dprintk("%s: begin!\n", __func__
);
3785 if (nfs_wait_on_sequence(data
->arg
.lock_seqid
, task
) != 0)
3787 /* Do we need to do an open_to_lock_owner? */
3788 if (!(data
->arg
.lock_seqid
->sequence
->flags
& NFS_SEQID_CONFIRMED
)) {
3789 if (nfs_wait_on_sequence(data
->arg
.open_seqid
, task
) != 0)
3791 data
->arg
.open_stateid
= &state
->stateid
;
3792 data
->arg
.new_lock_owner
= 1;
3793 data
->res
.open_seqid
= data
->arg
.open_seqid
;
3795 data
->arg
.new_lock_owner
= 0;
3796 data
->timestamp
= jiffies
;
3797 if (nfs4_setup_sequence(data
->server
->nfs_client
, &data
->arg
.seq_args
,
3798 &data
->res
.seq_res
, 1, task
))
3800 rpc_call_start(task
);
3801 dprintk("%s: done!, ret = %d\n", __func__
, data
->rpc_status
);
3804 static void nfs4_lock_done(struct rpc_task
*task
, void *calldata
)
3806 struct nfs4_lockdata
*data
= calldata
;
3808 dprintk("%s: begin!\n", __func__
);
3810 nfs4_sequence_done_free_slot(data
->server
, &data
->res
.seq_res
,
3813 data
->rpc_status
= task
->tk_status
;
3814 if (RPC_ASSASSINATED(task
))
3816 if (data
->arg
.new_lock_owner
!= 0) {
3817 if (data
->rpc_status
== 0)
3818 nfs_confirm_seqid(&data
->lsp
->ls_seqid
, 0);
3822 if (data
->rpc_status
== 0) {
3823 memcpy(data
->lsp
->ls_stateid
.data
, data
->res
.stateid
.data
,
3824 sizeof(data
->lsp
->ls_stateid
.data
));
3825 data
->lsp
->ls_flags
|= NFS_LOCK_INITIALIZED
;
3826 renew_lease(NFS_SERVER(data
->ctx
->path
.dentry
->d_inode
), data
->timestamp
);
3829 dprintk("%s: done, ret = %d!\n", __func__
, data
->rpc_status
);
3832 static void nfs4_lock_release(void *calldata
)
3834 struct nfs4_lockdata
*data
= calldata
;
3836 dprintk("%s: begin!\n", __func__
);
3837 nfs_free_seqid(data
->arg
.open_seqid
);
3838 if (data
->cancelled
!= 0) {
3839 struct rpc_task
*task
;
3840 task
= nfs4_do_unlck(&data
->fl
, data
->ctx
, data
->lsp
,
3841 data
->arg
.lock_seqid
);
3844 dprintk("%s: cancelling lock!\n", __func__
);
3846 nfs_free_seqid(data
->arg
.lock_seqid
);
3847 nfs4_put_lock_state(data
->lsp
);
3848 put_nfs_open_context(data
->ctx
);
3850 dprintk("%s: done!\n", __func__
);
3853 static const struct rpc_call_ops nfs4_lock_ops
= {
3854 .rpc_call_prepare
= nfs4_lock_prepare
,
3855 .rpc_call_done
= nfs4_lock_done
,
3856 .rpc_release
= nfs4_lock_release
,
3859 static int _nfs4_do_setlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*fl
, int reclaim
)
3861 struct nfs4_lockdata
*data
;
3862 struct rpc_task
*task
;
3863 struct rpc_message msg
= {
3864 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOCK
],
3865 .rpc_cred
= state
->owner
->so_cred
,
3867 struct rpc_task_setup task_setup_data
= {
3868 .rpc_client
= NFS_CLIENT(state
->inode
),
3869 .rpc_message
= &msg
,
3870 .callback_ops
= &nfs4_lock_ops
,
3871 .workqueue
= nfsiod_workqueue
,
3872 .flags
= RPC_TASK_ASYNC
,
3876 dprintk("%s: begin!\n", __func__
);
3877 data
= nfs4_alloc_lockdata(fl
, nfs_file_open_context(fl
->fl_file
),
3878 fl
->fl_u
.nfs4_fl
.owner
);
3882 data
->arg
.block
= 1;
3884 data
->arg
.reclaim
= 1;
3885 msg
.rpc_argp
= &data
->arg
,
3886 msg
.rpc_resp
= &data
->res
,
3887 task_setup_data
.callback_data
= data
;
3888 task
= rpc_run_task(&task_setup_data
);
3890 return PTR_ERR(task
);
3891 ret
= nfs4_wait_for_completion_rpc_task(task
);
3893 ret
= data
->rpc_status
;
3894 if (ret
== -NFS4ERR_DENIED
)
3897 data
->cancelled
= 1;
3899 dprintk("%s: done, ret = %d!\n", __func__
, ret
);
3903 static int nfs4_lock_reclaim(struct nfs4_state
*state
, struct file_lock
*request
)
3905 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
3906 struct nfs4_exception exception
= { };
3910 /* Cache the lock if possible... */
3911 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) != 0)
3913 err
= _nfs4_do_setlk(state
, F_SETLK
, request
, 1);
3914 if (err
!= -NFS4ERR_DELAY
)
3916 nfs4_handle_exception(server
, err
, &exception
);
3917 } while (exception
.retry
);
3921 static int nfs4_lock_expired(struct nfs4_state
*state
, struct file_lock
*request
)
3923 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
3924 struct nfs4_exception exception
= { };
3927 err
= nfs4_set_lock_state(state
, request
);
3931 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) != 0)
3933 err
= _nfs4_do_setlk(state
, F_SETLK
, request
, 0);
3934 if (err
!= -NFS4ERR_DELAY
)
3936 nfs4_handle_exception(server
, err
, &exception
);
3937 } while (exception
.retry
);
3941 static int _nfs4_proc_setlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
3943 struct nfs_inode
*nfsi
= NFS_I(state
->inode
);
3944 unsigned char fl_flags
= request
->fl_flags
;
3947 /* Is this a delegated open? */
3948 status
= nfs4_set_lock_state(state
, request
);
3951 request
->fl_flags
|= FL_ACCESS
;
3952 status
= do_vfs_lock(request
->fl_file
, request
);
3955 down_read(&nfsi
->rwsem
);
3956 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
)) {
3957 /* Yes: cache locks! */
3958 /* ...but avoid races with delegation recall... */
3959 request
->fl_flags
= fl_flags
& ~FL_SLEEP
;
3960 status
= do_vfs_lock(request
->fl_file
, request
);
3963 status
= _nfs4_do_setlk(state
, cmd
, request
, 0);
3966 /* Note: we always want to sleep here! */
3967 request
->fl_flags
= fl_flags
| FL_SLEEP
;
3968 if (do_vfs_lock(request
->fl_file
, request
) < 0)
3969 printk(KERN_WARNING
"%s: VFS is out of sync with lock manager!\n", __func__
);
3971 up_read(&nfsi
->rwsem
);
3973 request
->fl_flags
= fl_flags
;
3977 static int nfs4_proc_setlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
3979 struct nfs4_exception exception
= { };
3983 err
= nfs4_handle_exception(NFS_SERVER(state
->inode
),
3984 _nfs4_proc_setlk(state
, cmd
, request
),
3986 } while (exception
.retry
);
3991 nfs4_proc_lock(struct file
*filp
, int cmd
, struct file_lock
*request
)
3993 struct nfs_open_context
*ctx
;
3994 struct nfs4_state
*state
;
3995 unsigned long timeout
= NFS4_LOCK_MINTIMEOUT
;
3998 /* verify open state */
3999 ctx
= nfs_file_open_context(filp
);
4002 if (request
->fl_start
< 0 || request
->fl_end
< 0)
4006 return nfs4_proc_getlk(state
, F_GETLK
, request
);
4008 if (!(IS_SETLK(cmd
) || IS_SETLKW(cmd
)))
4011 if (request
->fl_type
== F_UNLCK
)
4012 return nfs4_proc_unlck(state
, cmd
, request
);
4015 status
= nfs4_proc_setlk(state
, cmd
, request
);
4016 if ((status
!= -EAGAIN
) || IS_SETLK(cmd
))
4018 timeout
= nfs4_set_lock_task_retry(timeout
);
4019 status
= -ERESTARTSYS
;
4022 } while(status
< 0);
4026 int nfs4_lock_delegation_recall(struct nfs4_state
*state
, struct file_lock
*fl
)
4028 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
4029 struct nfs4_exception exception
= { };
4032 err
= nfs4_set_lock_state(state
, fl
);
4036 err
= _nfs4_do_setlk(state
, F_SETLK
, fl
, 0);
4037 if (err
!= -NFS4ERR_DELAY
)
4039 err
= nfs4_handle_exception(server
, err
, &exception
);
4040 } while (exception
.retry
);
4045 #define XATTR_NAME_NFSV4_ACL "system.nfs4_acl"
4047 int nfs4_setxattr(struct dentry
*dentry
, const char *key
, const void *buf
,
4048 size_t buflen
, int flags
)
4050 struct inode
*inode
= dentry
->d_inode
;
4052 if (strcmp(key
, XATTR_NAME_NFSV4_ACL
) != 0)
4055 return nfs4_proc_set_acl(inode
, buf
, buflen
);
4058 /* The getxattr man page suggests returning -ENODATA for unknown attributes,
4059 * and that's what we'll do for e.g. user attributes that haven't been set.
4060 * But we'll follow ext2/ext3's lead by returning -EOPNOTSUPP for unsupported
4061 * attributes in kernel-managed attribute namespaces. */
4062 ssize_t
nfs4_getxattr(struct dentry
*dentry
, const char *key
, void *buf
,
4065 struct inode
*inode
= dentry
->d_inode
;
4067 if (strcmp(key
, XATTR_NAME_NFSV4_ACL
) != 0)
4070 return nfs4_proc_get_acl(inode
, buf
, buflen
);
4073 ssize_t
nfs4_listxattr(struct dentry
*dentry
, char *buf
, size_t buflen
)
4075 size_t len
= strlen(XATTR_NAME_NFSV4_ACL
) + 1;
4077 if (!nfs4_server_supports_acls(NFS_SERVER(dentry
->d_inode
)))
4079 if (buf
&& buflen
< len
)
4082 memcpy(buf
, XATTR_NAME_NFSV4_ACL
, len
);
4086 static void nfs_fixup_referral_attributes(struct nfs_fattr
*fattr
)
4088 if (!((fattr
->valid
& NFS_ATTR_FATTR_FILEID
) &&
4089 (fattr
->valid
& NFS_ATTR_FATTR_FSID
) &&
4090 (fattr
->valid
& NFS_ATTR_FATTR_V4_REFERRAL
)))
4093 fattr
->valid
|= NFS_ATTR_FATTR_TYPE
| NFS_ATTR_FATTR_MODE
|
4094 NFS_ATTR_FATTR_NLINK
;
4095 fattr
->mode
= S_IFDIR
| S_IRUGO
| S_IXUGO
;
4099 int nfs4_proc_fs_locations(struct inode
*dir
, const struct qstr
*name
,
4100 struct nfs4_fs_locations
*fs_locations
, struct page
*page
)
4102 struct nfs_server
*server
= NFS_SERVER(dir
);
4104 [0] = FATTR4_WORD0_FSID
| FATTR4_WORD0_FS_LOCATIONS
,
4105 [1] = FATTR4_WORD1_MOUNTED_ON_FILEID
,
4107 struct nfs4_fs_locations_arg args
= {
4108 .dir_fh
= NFS_FH(dir
),
4113 struct nfs4_fs_locations_res res
= {
4114 .fs_locations
= fs_locations
,
4116 struct rpc_message msg
= {
4117 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_FS_LOCATIONS
],
4123 dprintk("%s: start\n", __func__
);
4124 nfs_fattr_init(&fs_locations
->fattr
);
4125 fs_locations
->server
= server
;
4126 fs_locations
->nlocations
= 0;
4127 status
= nfs4_call_sync(server
, &msg
, &args
, &res
, 0);
4128 nfs_fixup_referral_attributes(&fs_locations
->fattr
);
4129 dprintk("%s: returned status = %d\n", __func__
, status
);
4133 #ifdef CONFIG_NFS_V4_1
4135 * nfs4_proc_exchange_id()
4137 * Since the clientid has expired, all compounds using sessions
4138 * associated with the stale clientid will be returning
4139 * NFS4ERR_BADSESSION in the sequence operation, and will therefore
4140 * be in some phase of session reset.
4142 static int nfs4_proc_exchange_id(struct nfs_client
*clp
, struct rpc_cred
*cred
)
4144 nfs4_verifier verifier
;
4145 struct nfs41_exchange_id_args args
= {
4147 .flags
= clp
->cl_exchange_flags
,
4149 struct nfs41_exchange_id_res res
= {
4153 struct rpc_message msg
= {
4154 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_EXCHANGE_ID
],
4161 dprintk("--> %s\n", __func__
);
4162 BUG_ON(clp
== NULL
);
4163 p
= (u32
*)verifier
.data
;
4164 *p
++ = htonl((u32
)clp
->cl_boot_time
.tv_sec
);
4165 *p
= htonl((u32
)clp
->cl_boot_time
.tv_nsec
);
4166 args
.verifier
= &verifier
;
4169 args
.id_len
= scnprintf(args
.id
, sizeof(args
.id
),
4172 rpc_peeraddr2str(clp
->cl_rpcclient
,
4174 clp
->cl_id_uniquifier
);
4176 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, 0);
4178 if (status
!= NFS4ERR_CLID_INUSE
)
4184 if (++clp
->cl_id_uniquifier
== 0)
4188 dprintk("<-- %s status= %d\n", __func__
, status
);
4192 struct nfs4_get_lease_time_data
{
4193 struct nfs4_get_lease_time_args
*args
;
4194 struct nfs4_get_lease_time_res
*res
;
4195 struct nfs_client
*clp
;
4198 static void nfs4_get_lease_time_prepare(struct rpc_task
*task
,
4202 struct nfs4_get_lease_time_data
*data
=
4203 (struct nfs4_get_lease_time_data
*)calldata
;
4205 dprintk("--> %s\n", __func__
);
4206 /* just setup sequence, do not trigger session recovery
4207 since we're invoked within one */
4208 ret
= nfs41_setup_sequence(data
->clp
->cl_session
,
4209 &data
->args
->la_seq_args
,
4210 &data
->res
->lr_seq_res
, 0, task
);
4212 BUG_ON(ret
== -EAGAIN
);
4213 rpc_call_start(task
);
4214 dprintk("<-- %s\n", __func__
);
4218 * Called from nfs4_state_manager thread for session setup, so don't recover
4219 * from sequence operation or clientid errors.
4221 static void nfs4_get_lease_time_done(struct rpc_task
*task
, void *calldata
)
4223 struct nfs4_get_lease_time_data
*data
=
4224 (struct nfs4_get_lease_time_data
*)calldata
;
4226 dprintk("--> %s\n", __func__
);
4227 nfs41_sequence_done(data
->clp
, &data
->res
->lr_seq_res
, task
->tk_status
);
4228 switch (task
->tk_status
) {
4229 case -NFS4ERR_DELAY
:
4230 case -NFS4ERR_GRACE
:
4231 dprintk("%s Retry: tk_status %d\n", __func__
, task
->tk_status
);
4232 rpc_delay(task
, NFS4_POLL_RETRY_MIN
);
4233 task
->tk_status
= 0;
4234 rpc_restart_call(task
);
4237 nfs41_sequence_free_slot(data
->clp
, &data
->res
->lr_seq_res
);
4238 dprintk("<-- %s\n", __func__
);
4241 struct rpc_call_ops nfs4_get_lease_time_ops
= {
4242 .rpc_call_prepare
= nfs4_get_lease_time_prepare
,
4243 .rpc_call_done
= nfs4_get_lease_time_done
,
4246 int nfs4_proc_get_lease_time(struct nfs_client
*clp
, struct nfs_fsinfo
*fsinfo
)
4248 struct rpc_task
*task
;
4249 struct nfs4_get_lease_time_args args
;
4250 struct nfs4_get_lease_time_res res
= {
4251 .lr_fsinfo
= fsinfo
,
4253 struct nfs4_get_lease_time_data data
= {
4258 struct rpc_message msg
= {
4259 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GET_LEASE_TIME
],
4263 struct rpc_task_setup task_setup
= {
4264 .rpc_client
= clp
->cl_rpcclient
,
4265 .rpc_message
= &msg
,
4266 .callback_ops
= &nfs4_get_lease_time_ops
,
4267 .callback_data
= &data
4271 res
.lr_seq_res
.sr_slotid
= NFS4_MAX_SLOT_TABLE
;
4272 dprintk("--> %s\n", __func__
);
4273 task
= rpc_run_task(&task_setup
);
4276 status
= PTR_ERR(task
);
4278 status
= task
->tk_status
;
4281 dprintk("<-- %s return %d\n", __func__
, status
);
4286 /* Destroy the slot table */
4287 static void nfs4_destroy_slot_table(struct nfs4_session
*session
)
4289 if (session
->fc_slot_table
.slots
== NULL
)
4291 kfree(session
->fc_slot_table
.slots
);
4292 session
->fc_slot_table
.slots
= NULL
;
4296 struct nfs4_session
*nfs4_alloc_session(struct nfs_client
*clp
)
4298 struct nfs4_session
*session
;
4299 struct nfs4_slot_table
*tbl
;
4301 session
= kzalloc(sizeof(struct nfs4_session
), GFP_KERNEL
);
4304 tbl
= &session
->fc_slot_table
;
4305 spin_lock_init(&tbl
->slot_tbl_lock
);
4306 rpc_init_wait_queue(&tbl
->slot_tbl_waitq
, "Slot table");
4311 void nfs4_destroy_session(struct nfs4_session
*session
)
4313 nfs4_destroy_slot_table(session
);
4317 #endif /* CONFIG_NFS_V4_1 */
4319 struct nfs4_state_recovery_ops nfs4_reboot_recovery_ops
= {
4320 .owner_flag_bit
= NFS_OWNER_RECLAIM_REBOOT
,
4321 .state_flag_bit
= NFS_STATE_RECLAIM_REBOOT
,
4322 .recover_open
= nfs4_open_reclaim
,
4323 .recover_lock
= nfs4_lock_reclaim
,
4326 struct nfs4_state_recovery_ops nfs4_nograce_recovery_ops
= {
4327 .owner_flag_bit
= NFS_OWNER_RECLAIM_NOGRACE
,
4328 .state_flag_bit
= NFS_STATE_RECLAIM_NOGRACE
,
4329 .recover_open
= nfs4_open_expired
,
4330 .recover_lock
= nfs4_lock_expired
,
4333 static const struct inode_operations nfs4_file_inode_operations
= {
4334 .permission
= nfs_permission
,
4335 .getattr
= nfs_getattr
,
4336 .setattr
= nfs_setattr
,
4337 .getxattr
= nfs4_getxattr
,
4338 .setxattr
= nfs4_setxattr
,
4339 .listxattr
= nfs4_listxattr
,
4342 const struct nfs_rpc_ops nfs_v4_clientops
= {
4343 .version
= 4, /* protocol version */
4344 .dentry_ops
= &nfs4_dentry_operations
,
4345 .dir_inode_ops
= &nfs4_dir_inode_operations
,
4346 .file_inode_ops
= &nfs4_file_inode_operations
,
4347 .getroot
= nfs4_proc_get_root
,
4348 .getattr
= nfs4_proc_getattr
,
4349 .setattr
= nfs4_proc_setattr
,
4350 .lookupfh
= nfs4_proc_lookupfh
,
4351 .lookup
= nfs4_proc_lookup
,
4352 .access
= nfs4_proc_access
,
4353 .readlink
= nfs4_proc_readlink
,
4354 .create
= nfs4_proc_create
,
4355 .remove
= nfs4_proc_remove
,
4356 .unlink_setup
= nfs4_proc_unlink_setup
,
4357 .unlink_done
= nfs4_proc_unlink_done
,
4358 .rename
= nfs4_proc_rename
,
4359 .link
= nfs4_proc_link
,
4360 .symlink
= nfs4_proc_symlink
,
4361 .mkdir
= nfs4_proc_mkdir
,
4362 .rmdir
= nfs4_proc_remove
,
4363 .readdir
= nfs4_proc_readdir
,
4364 .mknod
= nfs4_proc_mknod
,
4365 .statfs
= nfs4_proc_statfs
,
4366 .fsinfo
= nfs4_proc_fsinfo
,
4367 .pathconf
= nfs4_proc_pathconf
,
4368 .set_capabilities
= nfs4_server_capabilities
,
4369 .decode_dirent
= nfs4_decode_dirent
,
4370 .read_setup
= nfs4_proc_read_setup
,
4371 .read_done
= nfs4_read_done
,
4372 .write_setup
= nfs4_proc_write_setup
,
4373 .write_done
= nfs4_write_done
,
4374 .commit_setup
= nfs4_proc_commit_setup
,
4375 .commit_done
= nfs4_commit_done
,
4376 .lock
= nfs4_proc_lock
,
4377 .clear_acl_cache
= nfs4_zap_acl_attr
,
4378 .close_context
= nfs4_close_context
,