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/delay.h>
40 #include <linux/errno.h>
41 #include <linux/string.h>
42 #include <linux/sunrpc/clnt.h>
43 #include <linux/nfs.h>
44 #include <linux/nfs4.h>
45 #include <linux/nfs_fs.h>
46 #include <linux/nfs_page.h>
47 #include <linux/namei.h>
48 #include <linux/mount.h>
49 #include <linux/module.h>
50 #include <linux/sunrpc/bc_xprt.h>
53 #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)
63 #define NFS4_MAX_LOOP_ON_RECOVER (10)
66 static int _nfs4_proc_open(struct nfs4_opendata
*data
);
67 static int nfs4_do_fsinfo(struct nfs_server
*, struct nfs_fh
*, struct nfs_fsinfo
*);
68 static int nfs4_async_handle_error(struct rpc_task
*, const struct nfs_server
*, struct nfs4_state
*);
69 static int _nfs4_proc_lookup(struct inode
*dir
, const struct qstr
*name
, struct nfs_fh
*fhandle
, struct nfs_fattr
*fattr
);
70 static int _nfs4_proc_getattr(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fattr
*fattr
);
72 /* Prevent leaks of NFSv4 errors into userland */
73 static int nfs4_map_errors(int err
)
78 case -NFS4ERR_RESOURCE
:
81 dprintk("%s could not handle NFSv4 error %d\n",
89 * This is our standard bitmap for GETATTR requests.
91 const u32 nfs4_fattr_bitmap
[2] = {
96 | FATTR4_WORD0_FILEID
,
98 | FATTR4_WORD1_NUMLINKS
100 | FATTR4_WORD1_OWNER_GROUP
101 | FATTR4_WORD1_RAWDEV
102 | FATTR4_WORD1_SPACE_USED
103 | FATTR4_WORD1_TIME_ACCESS
104 | FATTR4_WORD1_TIME_METADATA
105 | FATTR4_WORD1_TIME_MODIFY
108 const u32 nfs4_statfs_bitmap
[2] = {
109 FATTR4_WORD0_FILES_AVAIL
110 | FATTR4_WORD0_FILES_FREE
111 | FATTR4_WORD0_FILES_TOTAL
,
112 FATTR4_WORD1_SPACE_AVAIL
113 | FATTR4_WORD1_SPACE_FREE
114 | FATTR4_WORD1_SPACE_TOTAL
117 const u32 nfs4_pathconf_bitmap
[2] = {
119 | FATTR4_WORD0_MAXNAME
,
123 const u32 nfs4_fsinfo_bitmap
[2] = { FATTR4_WORD0_MAXFILESIZE
124 | FATTR4_WORD0_MAXREAD
125 | FATTR4_WORD0_MAXWRITE
126 | FATTR4_WORD0_LEASE_TIME
,
130 const u32 nfs4_fs_locations_bitmap
[2] = {
132 | FATTR4_WORD0_CHANGE
135 | FATTR4_WORD0_FILEID
136 | FATTR4_WORD0_FS_LOCATIONS
,
138 | FATTR4_WORD1_NUMLINKS
140 | FATTR4_WORD1_OWNER_GROUP
141 | FATTR4_WORD1_RAWDEV
142 | FATTR4_WORD1_SPACE_USED
143 | FATTR4_WORD1_TIME_ACCESS
144 | FATTR4_WORD1_TIME_METADATA
145 | FATTR4_WORD1_TIME_MODIFY
146 | FATTR4_WORD1_MOUNTED_ON_FILEID
149 static void nfs4_setup_readdir(u64 cookie
, __be32
*verifier
, struct dentry
*dentry
,
150 struct nfs4_readdir_arg
*readdir
)
154 BUG_ON(readdir
->count
< 80);
156 readdir
->cookie
= cookie
;
157 memcpy(&readdir
->verifier
, verifier
, sizeof(readdir
->verifier
));
162 memset(&readdir
->verifier
, 0, sizeof(readdir
->verifier
));
167 * NFSv4 servers do not return entries for '.' and '..'
168 * Therefore, we fake these entries here. We let '.'
169 * have cookie 0 and '..' have cookie 1. Note that
170 * when talking to the server, we always send cookie 0
173 start
= p
= kmap_atomic(*readdir
->pages
, KM_USER0
);
176 *p
++ = xdr_one
; /* next */
177 *p
++ = xdr_zero
; /* cookie, first word */
178 *p
++ = xdr_one
; /* cookie, second word */
179 *p
++ = xdr_one
; /* entry len */
180 memcpy(p
, ".\0\0\0", 4); /* entry */
182 *p
++ = xdr_one
; /* bitmap length */
183 *p
++ = htonl(FATTR4_WORD0_FILEID
); /* bitmap */
184 *p
++ = htonl(8); /* attribute buffer length */
185 p
= xdr_encode_hyper(p
, NFS_FILEID(dentry
->d_inode
));
188 *p
++ = xdr_one
; /* next */
189 *p
++ = xdr_zero
; /* cookie, first word */
190 *p
++ = xdr_two
; /* cookie, second word */
191 *p
++ = xdr_two
; /* entry len */
192 memcpy(p
, "..\0\0", 4); /* entry */
194 *p
++ = xdr_one
; /* bitmap length */
195 *p
++ = htonl(FATTR4_WORD0_FILEID
); /* bitmap */
196 *p
++ = htonl(8); /* attribute buffer length */
197 p
= xdr_encode_hyper(p
, NFS_FILEID(dentry
->d_parent
->d_inode
));
199 readdir
->pgbase
= (char *)p
- (char *)start
;
200 readdir
->count
-= readdir
->pgbase
;
201 kunmap_atomic(start
, KM_USER0
);
204 static int nfs4_wait_clnt_recover(struct nfs_client
*clp
)
210 res
= wait_on_bit(&clp
->cl_state
, NFS4CLNT_MANAGER_RUNNING
,
211 nfs_wait_bit_killable
, TASK_KILLABLE
);
215 static int nfs4_delay(struct rpc_clnt
*clnt
, long *timeout
)
222 *timeout
= NFS4_POLL_RETRY_MIN
;
223 if (*timeout
> NFS4_POLL_RETRY_MAX
)
224 *timeout
= NFS4_POLL_RETRY_MAX
;
225 schedule_timeout_killable(*timeout
);
226 if (fatal_signal_pending(current
))
232 /* This is the error handling routine for processes that are allowed
235 static int nfs4_handle_exception(const struct nfs_server
*server
, int errorcode
, struct nfs4_exception
*exception
)
237 struct nfs_client
*clp
= server
->nfs_client
;
238 struct nfs4_state
*state
= exception
->state
;
241 exception
->retry
= 0;
245 case -NFS4ERR_ADMIN_REVOKED
:
246 case -NFS4ERR_BAD_STATEID
:
247 case -NFS4ERR_OPENMODE
:
250 nfs4_state_mark_reclaim_nograce(clp
, state
);
251 case -NFS4ERR_STALE_CLIENTID
:
252 case -NFS4ERR_STALE_STATEID
:
253 case -NFS4ERR_EXPIRED
:
254 nfs4_schedule_state_recovery(clp
);
255 ret
= nfs4_wait_clnt_recover(clp
);
257 exception
->retry
= 1;
258 #if !defined(CONFIG_NFS_V4_1)
260 #else /* !defined(CONFIG_NFS_V4_1) */
261 if (!nfs4_has_session(server
->nfs_client
))
264 case -NFS4ERR_BADSESSION
:
265 case -NFS4ERR_BADSLOT
:
266 case -NFS4ERR_BAD_HIGH_SLOT
:
267 case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION
:
268 case -NFS4ERR_DEADSESSION
:
269 case -NFS4ERR_SEQ_FALSE_RETRY
:
270 case -NFS4ERR_SEQ_MISORDERED
:
271 dprintk("%s ERROR: %d Reset session\n", __func__
,
273 nfs4_schedule_state_recovery(clp
);
274 exception
->retry
= 1;
276 #endif /* !defined(CONFIG_NFS_V4_1) */
277 case -NFS4ERR_FILE_OPEN
:
278 if (exception
->timeout
> HZ
) {
279 /* We have retried a decent amount, time to
287 ret
= nfs4_delay(server
->client
, &exception
->timeout
);
290 case -NFS4ERR_OLD_STATEID
:
291 exception
->retry
= 1;
293 /* We failed to handle the error */
294 return nfs4_map_errors(ret
);
298 static void renew_lease(const struct nfs_server
*server
, unsigned long timestamp
)
300 struct nfs_client
*clp
= server
->nfs_client
;
301 spin_lock(&clp
->cl_lock
);
302 if (time_before(clp
->cl_last_renewal
,timestamp
))
303 clp
->cl_last_renewal
= timestamp
;
304 spin_unlock(&clp
->cl_lock
);
307 #if defined(CONFIG_NFS_V4_1)
310 * nfs4_free_slot - free a slot and efficiently update slot table.
312 * freeing a slot is trivially done by clearing its respective bit
314 * If the freed slotid equals highest_used_slotid we want to update it
315 * so that the server would be able to size down the slot table if needed,
316 * otherwise we know that the highest_used_slotid is still in use.
317 * When updating highest_used_slotid there may be "holes" in the bitmap
318 * so we need to scan down from highest_used_slotid to 0 looking for the now
319 * highest slotid in use.
320 * If none found, highest_used_slotid is set to -1.
322 * Must be called while holding tbl->slot_tbl_lock
325 nfs4_free_slot(struct nfs4_slot_table
*tbl
, u8 free_slotid
)
327 int slotid
= free_slotid
;
329 /* clear used bit in bitmap */
330 __clear_bit(slotid
, tbl
->used_slots
);
332 /* update highest_used_slotid when it is freed */
333 if (slotid
== tbl
->highest_used_slotid
) {
334 slotid
= find_last_bit(tbl
->used_slots
, tbl
->max_slots
);
335 if (slotid
< tbl
->max_slots
)
336 tbl
->highest_used_slotid
= slotid
;
338 tbl
->highest_used_slotid
= -1;
340 dprintk("%s: free_slotid %u highest_used_slotid %d\n", __func__
,
341 free_slotid
, tbl
->highest_used_slotid
);
344 static void nfs41_sequence_free_slot(const struct nfs_client
*clp
,
345 struct nfs4_sequence_res
*res
)
347 struct nfs4_slot_table
*tbl
;
349 tbl
= &clp
->cl_session
->fc_slot_table
;
350 if (res
->sr_slotid
== NFS4_MAX_SLOT_TABLE
) {
351 /* just wake up the next guy waiting since
352 * we may have not consumed a slot after all */
353 dprintk("%s: No slot\n", __func__
);
357 spin_lock(&tbl
->slot_tbl_lock
);
358 nfs4_free_slot(tbl
, res
->sr_slotid
);
360 /* Signal state manager thread if session is drained */
361 if (test_bit(NFS4CLNT_SESSION_DRAINING
, &clp
->cl_state
)) {
362 if (tbl
->highest_used_slotid
== -1) {
363 dprintk("%s COMPLETE: Session Drained\n", __func__
);
364 complete(&clp
->cl_session
->complete
);
367 rpc_wake_up_next(&tbl
->slot_tbl_waitq
);
368 spin_unlock(&tbl
->slot_tbl_lock
);
369 res
->sr_slotid
= NFS4_MAX_SLOT_TABLE
;
372 static void nfs41_sequence_done(struct nfs_client
*clp
,
373 struct nfs4_sequence_res
*res
,
376 unsigned long timestamp
;
377 struct nfs4_slot_table
*tbl
;
378 struct nfs4_slot
*slot
;
381 * sr_status remains 1 if an RPC level error occurred. The server
382 * may or may not have processed the sequence operation..
383 * Proceed as if the server received and processed the sequence
386 if (res
->sr_status
== 1)
387 res
->sr_status
= NFS_OK
;
389 /* -ERESTARTSYS can result in skipping nfs41_sequence_setup */
390 if (res
->sr_slotid
== NFS4_MAX_SLOT_TABLE
)
393 /* Check the SEQUENCE operation status */
394 if (res
->sr_status
== 0) {
395 tbl
= &clp
->cl_session
->fc_slot_table
;
396 slot
= tbl
->slots
+ res
->sr_slotid
;
397 /* Update the slot's sequence and clientid lease timer */
399 timestamp
= res
->sr_renewal_time
;
400 spin_lock(&clp
->cl_lock
);
401 if (time_before(clp
->cl_last_renewal
, timestamp
))
402 clp
->cl_last_renewal
= timestamp
;
403 spin_unlock(&clp
->cl_lock
);
404 /* Check sequence flags */
405 nfs41_handle_sequence_flag_errors(clp
, res
->sr_status_flags
);
408 /* The session may be reset by one of the error handlers. */
409 dprintk("%s: Error %d free the slot \n", __func__
, res
->sr_status
);
410 nfs41_sequence_free_slot(clp
, res
);
414 * nfs4_find_slot - efficiently look for a free slot
416 * nfs4_find_slot looks for an unset bit in the used_slots bitmap.
417 * If found, we mark the slot as used, update the highest_used_slotid,
418 * and respectively set up the sequence operation args.
419 * The slot number is returned if found, or NFS4_MAX_SLOT_TABLE otherwise.
421 * Note: must be called with under the slot_tbl_lock.
424 nfs4_find_slot(struct nfs4_slot_table
*tbl
, struct rpc_task
*task
)
427 u8 ret_id
= NFS4_MAX_SLOT_TABLE
;
428 BUILD_BUG_ON((u8
)NFS4_MAX_SLOT_TABLE
!= (int)NFS4_MAX_SLOT_TABLE
);
430 dprintk("--> %s used_slots=%04lx highest_used=%d max_slots=%d\n",
431 __func__
, tbl
->used_slots
[0], tbl
->highest_used_slotid
,
433 slotid
= find_first_zero_bit(tbl
->used_slots
, tbl
->max_slots
);
434 if (slotid
>= tbl
->max_slots
)
436 __set_bit(slotid
, tbl
->used_slots
);
437 if (slotid
> tbl
->highest_used_slotid
)
438 tbl
->highest_used_slotid
= slotid
;
441 dprintk("<-- %s used_slots=%04lx highest_used=%d slotid=%d \n",
442 __func__
, tbl
->used_slots
[0], tbl
->highest_used_slotid
, ret_id
);
446 static int nfs41_setup_sequence(struct nfs4_session
*session
,
447 struct nfs4_sequence_args
*args
,
448 struct nfs4_sequence_res
*res
,
450 struct rpc_task
*task
)
452 struct nfs4_slot
*slot
;
453 struct nfs4_slot_table
*tbl
;
456 dprintk("--> %s\n", __func__
);
457 /* slot already allocated? */
458 if (res
->sr_slotid
!= NFS4_MAX_SLOT_TABLE
)
461 memset(res
, 0, sizeof(*res
));
462 res
->sr_slotid
= NFS4_MAX_SLOT_TABLE
;
463 tbl
= &session
->fc_slot_table
;
465 spin_lock(&tbl
->slot_tbl_lock
);
466 if (test_bit(NFS4CLNT_SESSION_DRAINING
, &session
->clp
->cl_state
)) {
468 * The state manager will wait until the slot table is empty.
469 * Schedule the reset thread
471 rpc_sleep_on(&tbl
->slot_tbl_waitq
, task
, NULL
);
472 spin_unlock(&tbl
->slot_tbl_lock
);
473 dprintk("%s Schedule Session Reset\n", __func__
);
477 slotid
= nfs4_find_slot(tbl
, task
);
478 if (slotid
== NFS4_MAX_SLOT_TABLE
) {
479 rpc_sleep_on(&tbl
->slot_tbl_waitq
, task
, NULL
);
480 spin_unlock(&tbl
->slot_tbl_lock
);
481 dprintk("<-- %s: no free slots\n", __func__
);
484 spin_unlock(&tbl
->slot_tbl_lock
);
486 slot
= tbl
->slots
+ slotid
;
487 args
->sa_session
= session
;
488 args
->sa_slotid
= slotid
;
489 args
->sa_cache_this
= cache_reply
;
491 dprintk("<-- %s slotid=%d seqid=%d\n", __func__
, slotid
, slot
->seq_nr
);
493 res
->sr_session
= session
;
494 res
->sr_slotid
= slotid
;
495 res
->sr_renewal_time
= jiffies
;
497 * sr_status is only set in decode_sequence, and so will remain
498 * set to 1 if an rpc level failure occurs.
504 int nfs4_setup_sequence(struct nfs_client
*clp
,
505 struct nfs4_sequence_args
*args
,
506 struct nfs4_sequence_res
*res
,
508 struct rpc_task
*task
)
512 dprintk("--> %s clp %p session %p sr_slotid %d\n",
513 __func__
, clp
, clp
->cl_session
, res
->sr_slotid
);
515 if (!nfs4_has_session(clp
))
517 ret
= nfs41_setup_sequence(clp
->cl_session
, args
, res
, cache_reply
,
519 if (ret
&& ret
!= -EAGAIN
) {
520 /* terminate rpc task */
521 task
->tk_status
= ret
;
522 task
->tk_action
= NULL
;
525 dprintk("<-- %s status=%d\n", __func__
, ret
);
529 struct nfs41_call_sync_data
{
530 struct nfs_client
*clp
;
531 struct nfs4_sequence_args
*seq_args
;
532 struct nfs4_sequence_res
*seq_res
;
536 static void nfs41_call_sync_prepare(struct rpc_task
*task
, void *calldata
)
538 struct nfs41_call_sync_data
*data
= calldata
;
540 dprintk("--> %s data->clp->cl_session %p\n", __func__
,
541 data
->clp
->cl_session
);
542 if (nfs4_setup_sequence(data
->clp
, data
->seq_args
,
543 data
->seq_res
, data
->cache_reply
, task
))
545 rpc_call_start(task
);
548 static void nfs41_call_sync_done(struct rpc_task
*task
, void *calldata
)
550 struct nfs41_call_sync_data
*data
= calldata
;
552 nfs41_sequence_done(data
->clp
, data
->seq_res
, task
->tk_status
);
555 struct rpc_call_ops nfs41_call_sync_ops
= {
556 .rpc_call_prepare
= nfs41_call_sync_prepare
,
557 .rpc_call_done
= nfs41_call_sync_done
,
560 static int nfs4_call_sync_sequence(struct nfs_client
*clp
,
561 struct rpc_clnt
*clnt
,
562 struct rpc_message
*msg
,
563 struct nfs4_sequence_args
*args
,
564 struct nfs4_sequence_res
*res
,
568 struct rpc_task
*task
;
569 struct nfs41_call_sync_data data
= {
573 .cache_reply
= cache_reply
,
575 struct rpc_task_setup task_setup
= {
578 .callback_ops
= &nfs41_call_sync_ops
,
579 .callback_data
= &data
582 res
->sr_slotid
= NFS4_MAX_SLOT_TABLE
;
583 task
= rpc_run_task(&task_setup
);
587 ret
= task
->tk_status
;
593 int _nfs4_call_sync_session(struct nfs_server
*server
,
594 struct rpc_message
*msg
,
595 struct nfs4_sequence_args
*args
,
596 struct nfs4_sequence_res
*res
,
599 return nfs4_call_sync_sequence(server
->nfs_client
, server
->client
,
600 msg
, args
, res
, cache_reply
);
603 #endif /* CONFIG_NFS_V4_1 */
605 int _nfs4_call_sync(struct nfs_server
*server
,
606 struct rpc_message
*msg
,
607 struct nfs4_sequence_args
*args
,
608 struct nfs4_sequence_res
*res
,
611 args
->sa_session
= res
->sr_session
= NULL
;
612 return rpc_call_sync(server
->client
, msg
, 0);
615 #define nfs4_call_sync(server, msg, args, res, cache_reply) \
616 (server)->nfs_client->cl_call_sync((server), (msg), &(args)->seq_args, \
617 &(res)->seq_res, (cache_reply))
619 static void nfs4_sequence_done(const struct nfs_server
*server
,
620 struct nfs4_sequence_res
*res
, int rpc_status
)
622 #ifdef CONFIG_NFS_V4_1
623 if (nfs4_has_session(server
->nfs_client
))
624 nfs41_sequence_done(server
->nfs_client
, res
, rpc_status
);
625 #endif /* CONFIG_NFS_V4_1 */
628 static void update_changeattr(struct inode
*dir
, struct nfs4_change_info
*cinfo
)
630 struct nfs_inode
*nfsi
= NFS_I(dir
);
632 spin_lock(&dir
->i_lock
);
633 nfsi
->cache_validity
|= NFS_INO_INVALID_ATTR
|NFS_INO_REVAL_PAGECACHE
|NFS_INO_INVALID_DATA
;
634 if (!cinfo
->atomic
|| cinfo
->before
!= nfsi
->change_attr
)
635 nfs_force_lookup_revalidate(dir
);
636 nfsi
->change_attr
= cinfo
->after
;
637 spin_unlock(&dir
->i_lock
);
640 struct nfs4_opendata
{
642 struct nfs_openargs o_arg
;
643 struct nfs_openres o_res
;
644 struct nfs_open_confirmargs c_arg
;
645 struct nfs_open_confirmres c_res
;
646 struct nfs_fattr f_attr
;
647 struct nfs_fattr dir_attr
;
650 struct nfs4_state_owner
*owner
;
651 struct nfs4_state
*state
;
653 unsigned long timestamp
;
654 unsigned int rpc_done
: 1;
660 static void nfs4_init_opendata_res(struct nfs4_opendata
*p
)
662 p
->o_res
.f_attr
= &p
->f_attr
;
663 p
->o_res
.dir_attr
= &p
->dir_attr
;
664 p
->o_res
.seqid
= p
->o_arg
.seqid
;
665 p
->c_res
.seqid
= p
->c_arg
.seqid
;
666 p
->o_res
.server
= p
->o_arg
.server
;
667 nfs_fattr_init(&p
->f_attr
);
668 nfs_fattr_init(&p
->dir_attr
);
669 p
->o_res
.seq_res
.sr_slotid
= NFS4_MAX_SLOT_TABLE
;
672 static struct nfs4_opendata
*nfs4_opendata_alloc(struct path
*path
,
673 struct nfs4_state_owner
*sp
, fmode_t fmode
, int flags
,
674 const struct iattr
*attrs
)
676 struct dentry
*parent
= dget_parent(path
->dentry
);
677 struct inode
*dir
= parent
->d_inode
;
678 struct nfs_server
*server
= NFS_SERVER(dir
);
679 struct nfs4_opendata
*p
;
681 p
= kzalloc(sizeof(*p
), GFP_KERNEL
);
684 p
->o_arg
.seqid
= nfs_alloc_seqid(&sp
->so_seqid
);
685 if (p
->o_arg
.seqid
== NULL
)
687 p
->path
.mnt
= mntget(path
->mnt
);
688 p
->path
.dentry
= dget(path
->dentry
);
691 atomic_inc(&sp
->so_count
);
692 p
->o_arg
.fh
= NFS_FH(dir
);
693 p
->o_arg
.open_flags
= flags
;
694 p
->o_arg
.fmode
= fmode
& (FMODE_READ
|FMODE_WRITE
);
695 p
->o_arg
.clientid
= server
->nfs_client
->cl_clientid
;
696 p
->o_arg
.id
= sp
->so_owner_id
.id
;
697 p
->o_arg
.name
= &p
->path
.dentry
->d_name
;
698 p
->o_arg
.server
= server
;
699 p
->o_arg
.bitmask
= server
->attr_bitmask
;
700 p
->o_arg
.claim
= NFS4_OPEN_CLAIM_NULL
;
701 if (flags
& O_EXCL
) {
702 if (nfs4_has_persistent_session(server
->nfs_client
)) {
704 p
->o_arg
.u
.attrs
= &p
->attrs
;
705 memcpy(&p
->attrs
, attrs
, sizeof(p
->attrs
));
706 } else { /* EXCLUSIVE4_1 */
707 u32
*s
= (u32
*) p
->o_arg
.u
.verifier
.data
;
711 } else if (flags
& O_CREAT
) {
712 p
->o_arg
.u
.attrs
= &p
->attrs
;
713 memcpy(&p
->attrs
, attrs
, sizeof(p
->attrs
));
715 p
->c_arg
.fh
= &p
->o_res
.fh
;
716 p
->c_arg
.stateid
= &p
->o_res
.stateid
;
717 p
->c_arg
.seqid
= p
->o_arg
.seqid
;
718 nfs4_init_opendata_res(p
);
728 static void nfs4_opendata_free(struct kref
*kref
)
730 struct nfs4_opendata
*p
= container_of(kref
,
731 struct nfs4_opendata
, kref
);
733 nfs_free_seqid(p
->o_arg
.seqid
);
734 if (p
->state
!= NULL
)
735 nfs4_put_open_state(p
->state
);
736 nfs4_put_state_owner(p
->owner
);
742 static void nfs4_opendata_put(struct nfs4_opendata
*p
)
745 kref_put(&p
->kref
, nfs4_opendata_free
);
748 static int nfs4_wait_for_completion_rpc_task(struct rpc_task
*task
)
752 ret
= rpc_wait_for_completion_task(task
);
756 static int can_open_cached(struct nfs4_state
*state
, fmode_t mode
, int open_mode
)
760 if (open_mode
& O_EXCL
)
762 switch (mode
& (FMODE_READ
|FMODE_WRITE
)) {
764 ret
|= test_bit(NFS_O_RDONLY_STATE
, &state
->flags
) != 0
765 && state
->n_rdonly
!= 0;
768 ret
|= test_bit(NFS_O_WRONLY_STATE
, &state
->flags
) != 0
769 && state
->n_wronly
!= 0;
771 case FMODE_READ
|FMODE_WRITE
:
772 ret
|= test_bit(NFS_O_RDWR_STATE
, &state
->flags
) != 0
773 && state
->n_rdwr
!= 0;
779 static int can_open_delegated(struct nfs_delegation
*delegation
, fmode_t fmode
)
781 if ((delegation
->type
& fmode
) != fmode
)
783 if (test_bit(NFS_DELEGATION_NEED_RECLAIM
, &delegation
->flags
))
785 nfs_mark_delegation_referenced(delegation
);
789 static void update_open_stateflags(struct nfs4_state
*state
, fmode_t fmode
)
798 case FMODE_READ
|FMODE_WRITE
:
801 nfs4_state_set_mode_locked(state
, state
->state
| fmode
);
804 static void nfs_set_open_stateid_locked(struct nfs4_state
*state
, nfs4_stateid
*stateid
, fmode_t fmode
)
806 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) == 0)
807 memcpy(state
->stateid
.data
, stateid
->data
, sizeof(state
->stateid
.data
));
808 memcpy(state
->open_stateid
.data
, stateid
->data
, sizeof(state
->open_stateid
.data
));
811 set_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
814 set_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
816 case FMODE_READ
|FMODE_WRITE
:
817 set_bit(NFS_O_RDWR_STATE
, &state
->flags
);
821 static void nfs_set_open_stateid(struct nfs4_state
*state
, nfs4_stateid
*stateid
, fmode_t fmode
)
823 write_seqlock(&state
->seqlock
);
824 nfs_set_open_stateid_locked(state
, stateid
, fmode
);
825 write_sequnlock(&state
->seqlock
);
828 static void __update_open_stateid(struct nfs4_state
*state
, nfs4_stateid
*open_stateid
, const nfs4_stateid
*deleg_stateid
, fmode_t fmode
)
831 * Protect the call to nfs4_state_set_mode_locked and
832 * serialise the stateid update
834 write_seqlock(&state
->seqlock
);
835 if (deleg_stateid
!= NULL
) {
836 memcpy(state
->stateid
.data
, deleg_stateid
->data
, sizeof(state
->stateid
.data
));
837 set_bit(NFS_DELEGATED_STATE
, &state
->flags
);
839 if (open_stateid
!= NULL
)
840 nfs_set_open_stateid_locked(state
, open_stateid
, fmode
);
841 write_sequnlock(&state
->seqlock
);
842 spin_lock(&state
->owner
->so_lock
);
843 update_open_stateflags(state
, fmode
);
844 spin_unlock(&state
->owner
->so_lock
);
847 static int update_open_stateid(struct nfs4_state
*state
, nfs4_stateid
*open_stateid
, nfs4_stateid
*delegation
, fmode_t fmode
)
849 struct nfs_inode
*nfsi
= NFS_I(state
->inode
);
850 struct nfs_delegation
*deleg_cur
;
853 fmode
&= (FMODE_READ
|FMODE_WRITE
);
856 deleg_cur
= rcu_dereference(nfsi
->delegation
);
857 if (deleg_cur
== NULL
)
860 spin_lock(&deleg_cur
->lock
);
861 if (nfsi
->delegation
!= deleg_cur
||
862 (deleg_cur
->type
& fmode
) != fmode
)
863 goto no_delegation_unlock
;
865 if (delegation
== NULL
)
866 delegation
= &deleg_cur
->stateid
;
867 else if (memcmp(deleg_cur
->stateid
.data
, delegation
->data
, NFS4_STATEID_SIZE
) != 0)
868 goto no_delegation_unlock
;
870 nfs_mark_delegation_referenced(deleg_cur
);
871 __update_open_stateid(state
, open_stateid
, &deleg_cur
->stateid
, fmode
);
873 no_delegation_unlock
:
874 spin_unlock(&deleg_cur
->lock
);
878 if (!ret
&& open_stateid
!= NULL
) {
879 __update_open_stateid(state
, open_stateid
, NULL
, fmode
);
887 static void nfs4_return_incompatible_delegation(struct inode
*inode
, fmode_t fmode
)
889 struct nfs_delegation
*delegation
;
892 delegation
= rcu_dereference(NFS_I(inode
)->delegation
);
893 if (delegation
== NULL
|| (delegation
->type
& fmode
) == fmode
) {
898 nfs_inode_return_delegation(inode
);
901 static struct nfs4_state
*nfs4_try_open_cached(struct nfs4_opendata
*opendata
)
903 struct nfs4_state
*state
= opendata
->state
;
904 struct nfs_inode
*nfsi
= NFS_I(state
->inode
);
905 struct nfs_delegation
*delegation
;
906 int open_mode
= opendata
->o_arg
.open_flags
& O_EXCL
;
907 fmode_t fmode
= opendata
->o_arg
.fmode
;
908 nfs4_stateid stateid
;
912 if (can_open_cached(state
, fmode
, open_mode
)) {
913 spin_lock(&state
->owner
->so_lock
);
914 if (can_open_cached(state
, fmode
, open_mode
)) {
915 update_open_stateflags(state
, fmode
);
916 spin_unlock(&state
->owner
->so_lock
);
917 goto out_return_state
;
919 spin_unlock(&state
->owner
->so_lock
);
922 delegation
= rcu_dereference(nfsi
->delegation
);
923 if (delegation
== NULL
||
924 !can_open_delegated(delegation
, fmode
)) {
928 /* Save the delegation */
929 memcpy(stateid
.data
, delegation
->stateid
.data
, sizeof(stateid
.data
));
931 ret
= nfs_may_open(state
->inode
, state
->owner
->so_cred
, open_mode
);
936 /* Try to update the stateid using the delegation */
937 if (update_open_stateid(state
, NULL
, &stateid
, fmode
))
938 goto out_return_state
;
943 atomic_inc(&state
->count
);
947 static struct nfs4_state
*nfs4_opendata_to_nfs4_state(struct nfs4_opendata
*data
)
950 struct nfs4_state
*state
= NULL
;
951 struct nfs_delegation
*delegation
;
954 if (!data
->rpc_done
) {
955 state
= nfs4_try_open_cached(data
);
960 if (!(data
->f_attr
.valid
& NFS_ATTR_FATTR
))
962 inode
= nfs_fhget(data
->dir
->d_sb
, &data
->o_res
.fh
, &data
->f_attr
);
963 ret
= PTR_ERR(inode
);
967 state
= nfs4_get_open_state(inode
, data
->owner
);
970 if (data
->o_res
.delegation_type
!= 0) {
971 int delegation_flags
= 0;
974 delegation
= rcu_dereference(NFS_I(inode
)->delegation
);
976 delegation_flags
= delegation
->flags
;
978 if ((delegation_flags
& 1UL<<NFS_DELEGATION_NEED_RECLAIM
) == 0)
979 nfs_inode_set_delegation(state
->inode
,
980 data
->owner
->so_cred
,
983 nfs_inode_reclaim_delegation(state
->inode
,
984 data
->owner
->so_cred
,
988 update_open_stateid(state
, &data
->o_res
.stateid
, NULL
,
999 static struct nfs_open_context
*nfs4_state_find_open_context(struct nfs4_state
*state
)
1001 struct nfs_inode
*nfsi
= NFS_I(state
->inode
);
1002 struct nfs_open_context
*ctx
;
1004 spin_lock(&state
->inode
->i_lock
);
1005 list_for_each_entry(ctx
, &nfsi
->open_files
, list
) {
1006 if (ctx
->state
!= state
)
1008 get_nfs_open_context(ctx
);
1009 spin_unlock(&state
->inode
->i_lock
);
1012 spin_unlock(&state
->inode
->i_lock
);
1013 return ERR_PTR(-ENOENT
);
1016 static struct nfs4_opendata
*nfs4_open_recoverdata_alloc(struct nfs_open_context
*ctx
, struct nfs4_state
*state
)
1018 struct nfs4_opendata
*opendata
;
1020 opendata
= nfs4_opendata_alloc(&ctx
->path
, state
->owner
, 0, 0, NULL
);
1021 if (opendata
== NULL
)
1022 return ERR_PTR(-ENOMEM
);
1023 opendata
->state
= state
;
1024 atomic_inc(&state
->count
);
1028 static int nfs4_open_recover_helper(struct nfs4_opendata
*opendata
, fmode_t fmode
, struct nfs4_state
**res
)
1030 struct nfs4_state
*newstate
;
1033 opendata
->o_arg
.open_flags
= 0;
1034 opendata
->o_arg
.fmode
= fmode
;
1035 memset(&opendata
->o_res
, 0, sizeof(opendata
->o_res
));
1036 memset(&opendata
->c_res
, 0, sizeof(opendata
->c_res
));
1037 nfs4_init_opendata_res(opendata
);
1038 ret
= _nfs4_proc_open(opendata
);
1041 newstate
= nfs4_opendata_to_nfs4_state(opendata
);
1042 if (IS_ERR(newstate
))
1043 return PTR_ERR(newstate
);
1044 nfs4_close_state(&opendata
->path
, newstate
, fmode
);
1049 static int nfs4_open_recover(struct nfs4_opendata
*opendata
, struct nfs4_state
*state
)
1051 struct nfs4_state
*newstate
;
1054 /* memory barrier prior to reading state->n_* */
1055 clear_bit(NFS_DELEGATED_STATE
, &state
->flags
);
1057 if (state
->n_rdwr
!= 0) {
1058 ret
= nfs4_open_recover_helper(opendata
, FMODE_READ
|FMODE_WRITE
, &newstate
);
1061 if (newstate
!= state
)
1064 if (state
->n_wronly
!= 0) {
1065 ret
= nfs4_open_recover_helper(opendata
, FMODE_WRITE
, &newstate
);
1068 if (newstate
!= state
)
1071 if (state
->n_rdonly
!= 0) {
1072 ret
= nfs4_open_recover_helper(opendata
, FMODE_READ
, &newstate
);
1075 if (newstate
!= state
)
1079 * We may have performed cached opens for all three recoveries.
1080 * Check if we need to update the current stateid.
1082 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) == 0 &&
1083 memcmp(state
->stateid
.data
, state
->open_stateid
.data
, sizeof(state
->stateid
.data
)) != 0) {
1084 write_seqlock(&state
->seqlock
);
1085 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) == 0)
1086 memcpy(state
->stateid
.data
, state
->open_stateid
.data
, sizeof(state
->stateid
.data
));
1087 write_sequnlock(&state
->seqlock
);
1094 * reclaim state on the server after a reboot.
1096 static int _nfs4_do_open_reclaim(struct nfs_open_context
*ctx
, struct nfs4_state
*state
)
1098 struct nfs_delegation
*delegation
;
1099 struct nfs4_opendata
*opendata
;
1100 fmode_t delegation_type
= 0;
1103 opendata
= nfs4_open_recoverdata_alloc(ctx
, state
);
1104 if (IS_ERR(opendata
))
1105 return PTR_ERR(opendata
);
1106 opendata
->o_arg
.claim
= NFS4_OPEN_CLAIM_PREVIOUS
;
1107 opendata
->o_arg
.fh
= NFS_FH(state
->inode
);
1109 delegation
= rcu_dereference(NFS_I(state
->inode
)->delegation
);
1110 if (delegation
!= NULL
&& test_bit(NFS_DELEGATION_NEED_RECLAIM
, &delegation
->flags
) != 0)
1111 delegation_type
= delegation
->type
;
1113 opendata
->o_arg
.u
.delegation_type
= delegation_type
;
1114 status
= nfs4_open_recover(opendata
, state
);
1115 nfs4_opendata_put(opendata
);
1119 static int nfs4_do_open_reclaim(struct nfs_open_context
*ctx
, struct nfs4_state
*state
)
1121 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
1122 struct nfs4_exception exception
= { };
1125 err
= _nfs4_do_open_reclaim(ctx
, state
);
1126 if (err
!= -NFS4ERR_DELAY
)
1128 nfs4_handle_exception(server
, err
, &exception
);
1129 } while (exception
.retry
);
1133 static int nfs4_open_reclaim(struct nfs4_state_owner
*sp
, struct nfs4_state
*state
)
1135 struct nfs_open_context
*ctx
;
1138 ctx
= nfs4_state_find_open_context(state
);
1140 return PTR_ERR(ctx
);
1141 ret
= nfs4_do_open_reclaim(ctx
, state
);
1142 put_nfs_open_context(ctx
);
1146 static int _nfs4_open_delegation_recall(struct nfs_open_context
*ctx
, struct nfs4_state
*state
, const nfs4_stateid
*stateid
)
1148 struct nfs4_opendata
*opendata
;
1151 opendata
= nfs4_open_recoverdata_alloc(ctx
, state
);
1152 if (IS_ERR(opendata
))
1153 return PTR_ERR(opendata
);
1154 opendata
->o_arg
.claim
= NFS4_OPEN_CLAIM_DELEGATE_CUR
;
1155 memcpy(opendata
->o_arg
.u
.delegation
.data
, stateid
->data
,
1156 sizeof(opendata
->o_arg
.u
.delegation
.data
));
1157 ret
= nfs4_open_recover(opendata
, state
);
1158 nfs4_opendata_put(opendata
);
1162 int nfs4_open_delegation_recall(struct nfs_open_context
*ctx
, struct nfs4_state
*state
, const nfs4_stateid
*stateid
)
1164 struct nfs4_exception exception
= { };
1165 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
1168 err
= _nfs4_open_delegation_recall(ctx
, state
, stateid
);
1174 case -NFS4ERR_BADSESSION
:
1175 case -NFS4ERR_BADSLOT
:
1176 case -NFS4ERR_BAD_HIGH_SLOT
:
1177 case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION
:
1178 case -NFS4ERR_DEADSESSION
:
1179 nfs4_schedule_state_recovery(
1180 server
->nfs_client
);
1182 case -NFS4ERR_STALE_CLIENTID
:
1183 case -NFS4ERR_STALE_STATEID
:
1184 case -NFS4ERR_EXPIRED
:
1185 /* Don't recall a delegation if it was lost */
1186 nfs4_schedule_state_recovery(server
->nfs_client
);
1190 * The show must go on: exit, but mark the
1191 * stateid as needing recovery.
1193 case -NFS4ERR_ADMIN_REVOKED
:
1194 case -NFS4ERR_BAD_STATEID
:
1195 nfs4_state_mark_reclaim_nograce(server
->nfs_client
, state
);
1200 err
= nfs4_handle_exception(server
, err
, &exception
);
1201 } while (exception
.retry
);
1206 static void nfs4_open_confirm_done(struct rpc_task
*task
, void *calldata
)
1208 struct nfs4_opendata
*data
= calldata
;
1210 data
->rpc_status
= task
->tk_status
;
1211 if (RPC_ASSASSINATED(task
))
1213 if (data
->rpc_status
== 0) {
1214 memcpy(data
->o_res
.stateid
.data
, data
->c_res
.stateid
.data
,
1215 sizeof(data
->o_res
.stateid
.data
));
1216 nfs_confirm_seqid(&data
->owner
->so_seqid
, 0);
1217 renew_lease(data
->o_res
.server
, data
->timestamp
);
1222 static void nfs4_open_confirm_release(void *calldata
)
1224 struct nfs4_opendata
*data
= calldata
;
1225 struct nfs4_state
*state
= NULL
;
1227 /* If this request hasn't been cancelled, do nothing */
1228 if (data
->cancelled
== 0)
1230 /* In case of error, no cleanup! */
1231 if (!data
->rpc_done
)
1233 state
= nfs4_opendata_to_nfs4_state(data
);
1235 nfs4_close_state(&data
->path
, state
, data
->o_arg
.fmode
);
1237 nfs4_opendata_put(data
);
1240 static const struct rpc_call_ops nfs4_open_confirm_ops
= {
1241 .rpc_call_done
= nfs4_open_confirm_done
,
1242 .rpc_release
= nfs4_open_confirm_release
,
1246 * Note: On error, nfs4_proc_open_confirm will free the struct nfs4_opendata
1248 static int _nfs4_proc_open_confirm(struct nfs4_opendata
*data
)
1250 struct nfs_server
*server
= NFS_SERVER(data
->dir
->d_inode
);
1251 struct rpc_task
*task
;
1252 struct rpc_message msg
= {
1253 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_OPEN_CONFIRM
],
1254 .rpc_argp
= &data
->c_arg
,
1255 .rpc_resp
= &data
->c_res
,
1256 .rpc_cred
= data
->owner
->so_cred
,
1258 struct rpc_task_setup task_setup_data
= {
1259 .rpc_client
= server
->client
,
1260 .rpc_message
= &msg
,
1261 .callback_ops
= &nfs4_open_confirm_ops
,
1262 .callback_data
= data
,
1263 .workqueue
= nfsiod_workqueue
,
1264 .flags
= RPC_TASK_ASYNC
,
1268 kref_get(&data
->kref
);
1270 data
->rpc_status
= 0;
1271 data
->timestamp
= jiffies
;
1272 task
= rpc_run_task(&task_setup_data
);
1274 return PTR_ERR(task
);
1275 status
= nfs4_wait_for_completion_rpc_task(task
);
1277 data
->cancelled
= 1;
1280 status
= data
->rpc_status
;
1285 static void nfs4_open_prepare(struct rpc_task
*task
, void *calldata
)
1287 struct nfs4_opendata
*data
= calldata
;
1288 struct nfs4_state_owner
*sp
= data
->owner
;
1290 if (nfs_wait_on_sequence(data
->o_arg
.seqid
, task
) != 0)
1293 * Check if we still need to send an OPEN call, or if we can use
1294 * a delegation instead.
1296 if (data
->state
!= NULL
) {
1297 struct nfs_delegation
*delegation
;
1299 if (can_open_cached(data
->state
, data
->o_arg
.fmode
, data
->o_arg
.open_flags
))
1302 delegation
= rcu_dereference(NFS_I(data
->state
->inode
)->delegation
);
1303 if (delegation
!= NULL
&&
1304 test_bit(NFS_DELEGATION_NEED_RECLAIM
, &delegation
->flags
) == 0) {
1310 /* Update sequence id. */
1311 data
->o_arg
.id
= sp
->so_owner_id
.id
;
1312 data
->o_arg
.clientid
= sp
->so_client
->cl_clientid
;
1313 if (data
->o_arg
.claim
== NFS4_OPEN_CLAIM_PREVIOUS
) {
1314 task
->tk_msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_OPEN_NOATTR
];
1315 nfs_copy_fh(&data
->o_res
.fh
, data
->o_arg
.fh
);
1317 data
->timestamp
= jiffies
;
1318 if (nfs4_setup_sequence(data
->o_arg
.server
->nfs_client
,
1319 &data
->o_arg
.seq_args
,
1320 &data
->o_res
.seq_res
, 1, task
))
1322 rpc_call_start(task
);
1325 task
->tk_action
= NULL
;
1329 static void nfs4_open_done(struct rpc_task
*task
, void *calldata
)
1331 struct nfs4_opendata
*data
= calldata
;
1333 data
->rpc_status
= task
->tk_status
;
1335 nfs4_sequence_done(data
->o_arg
.server
, &data
->o_res
.seq_res
,
1338 if (RPC_ASSASSINATED(task
))
1340 if (task
->tk_status
== 0) {
1341 switch (data
->o_res
.f_attr
->mode
& S_IFMT
) {
1345 data
->rpc_status
= -ELOOP
;
1348 data
->rpc_status
= -EISDIR
;
1351 data
->rpc_status
= -ENOTDIR
;
1353 renew_lease(data
->o_res
.server
, data
->timestamp
);
1354 if (!(data
->o_res
.rflags
& NFS4_OPEN_RESULT_CONFIRM
))
1355 nfs_confirm_seqid(&data
->owner
->so_seqid
, 0);
1360 static void nfs4_open_release(void *calldata
)
1362 struct nfs4_opendata
*data
= calldata
;
1363 struct nfs4_state
*state
= NULL
;
1365 /* If this request hasn't been cancelled, do nothing */
1366 if (data
->cancelled
== 0)
1368 /* In case of error, no cleanup! */
1369 if (data
->rpc_status
!= 0 || !data
->rpc_done
)
1371 /* In case we need an open_confirm, no cleanup! */
1372 if (data
->o_res
.rflags
& NFS4_OPEN_RESULT_CONFIRM
)
1374 state
= nfs4_opendata_to_nfs4_state(data
);
1376 nfs4_close_state(&data
->path
, state
, data
->o_arg
.fmode
);
1378 nfs4_opendata_put(data
);
1381 static const struct rpc_call_ops nfs4_open_ops
= {
1382 .rpc_call_prepare
= nfs4_open_prepare
,
1383 .rpc_call_done
= nfs4_open_done
,
1384 .rpc_release
= nfs4_open_release
,
1388 * Note: On error, nfs4_proc_open will free the struct nfs4_opendata
1390 static int _nfs4_proc_open(struct nfs4_opendata
*data
)
1392 struct inode
*dir
= data
->dir
->d_inode
;
1393 struct nfs_server
*server
= NFS_SERVER(dir
);
1394 struct nfs_openargs
*o_arg
= &data
->o_arg
;
1395 struct nfs_openres
*o_res
= &data
->o_res
;
1396 struct rpc_task
*task
;
1397 struct rpc_message msg
= {
1398 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_OPEN
],
1401 .rpc_cred
= data
->owner
->so_cred
,
1403 struct rpc_task_setup task_setup_data
= {
1404 .rpc_client
= server
->client
,
1405 .rpc_message
= &msg
,
1406 .callback_ops
= &nfs4_open_ops
,
1407 .callback_data
= data
,
1408 .workqueue
= nfsiod_workqueue
,
1409 .flags
= RPC_TASK_ASYNC
,
1413 kref_get(&data
->kref
);
1415 data
->rpc_status
= 0;
1416 data
->cancelled
= 0;
1417 task
= rpc_run_task(&task_setup_data
);
1419 return PTR_ERR(task
);
1420 status
= nfs4_wait_for_completion_rpc_task(task
);
1422 data
->cancelled
= 1;
1425 status
= data
->rpc_status
;
1427 if (status
!= 0 || !data
->rpc_done
)
1430 if (o_res
->fh
.size
== 0)
1431 _nfs4_proc_lookup(dir
, o_arg
->name
, &o_res
->fh
, o_res
->f_attr
);
1433 if (o_arg
->open_flags
& O_CREAT
) {
1434 update_changeattr(dir
, &o_res
->cinfo
);
1435 nfs_post_op_update_inode(dir
, o_res
->dir_attr
);
1437 nfs_refresh_inode(dir
, o_res
->dir_attr
);
1438 if(o_res
->rflags
& NFS4_OPEN_RESULT_CONFIRM
) {
1439 status
= _nfs4_proc_open_confirm(data
);
1443 if (!(o_res
->f_attr
->valid
& NFS_ATTR_FATTR
))
1444 _nfs4_proc_getattr(server
, &o_res
->fh
, o_res
->f_attr
);
1448 static int nfs4_recover_expired_lease(struct nfs_server
*server
)
1450 struct nfs_client
*clp
= server
->nfs_client
;
1454 for (loop
= NFS4_MAX_LOOP_ON_RECOVER
; loop
!= 0; loop
--) {
1455 ret
= nfs4_wait_clnt_recover(clp
);
1458 if (!test_bit(NFS4CLNT_LEASE_EXPIRED
, &clp
->cl_state
) &&
1459 !test_bit(NFS4CLNT_CHECK_LEASE
,&clp
->cl_state
))
1461 nfs4_schedule_state_recovery(clp
);
1469 * reclaim state on the server after a network partition.
1470 * Assumes caller holds the appropriate lock
1472 static int _nfs4_open_expired(struct nfs_open_context
*ctx
, struct nfs4_state
*state
)
1474 struct nfs4_opendata
*opendata
;
1477 opendata
= nfs4_open_recoverdata_alloc(ctx
, state
);
1478 if (IS_ERR(opendata
))
1479 return PTR_ERR(opendata
);
1480 ret
= nfs4_open_recover(opendata
, state
);
1482 d_drop(ctx
->path
.dentry
);
1483 nfs4_opendata_put(opendata
);
1487 static int nfs4_do_open_expired(struct nfs_open_context
*ctx
, struct nfs4_state
*state
)
1489 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
1490 struct nfs4_exception exception
= { };
1494 err
= _nfs4_open_expired(ctx
, state
);
1498 case -NFS4ERR_GRACE
:
1499 case -NFS4ERR_DELAY
:
1500 nfs4_handle_exception(server
, err
, &exception
);
1503 } while (exception
.retry
);
1508 static int nfs4_open_expired(struct nfs4_state_owner
*sp
, struct nfs4_state
*state
)
1510 struct nfs_open_context
*ctx
;
1513 ctx
= nfs4_state_find_open_context(state
);
1515 return PTR_ERR(ctx
);
1516 ret
= nfs4_do_open_expired(ctx
, state
);
1517 put_nfs_open_context(ctx
);
1522 * on an EXCLUSIVE create, the server should send back a bitmask with FATTR4-*
1523 * fields corresponding to attributes that were used to store the verifier.
1524 * Make sure we clobber those fields in the later setattr call
1526 static inline void nfs4_exclusive_attrset(struct nfs4_opendata
*opendata
, struct iattr
*sattr
)
1528 if ((opendata
->o_res
.attrset
[1] & FATTR4_WORD1_TIME_ACCESS
) &&
1529 !(sattr
->ia_valid
& ATTR_ATIME_SET
))
1530 sattr
->ia_valid
|= ATTR_ATIME
;
1532 if ((opendata
->o_res
.attrset
[1] & FATTR4_WORD1_TIME_MODIFY
) &&
1533 !(sattr
->ia_valid
& ATTR_MTIME_SET
))
1534 sattr
->ia_valid
|= ATTR_MTIME
;
1538 * Returns a referenced nfs4_state
1540 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
)
1542 struct nfs4_state_owner
*sp
;
1543 struct nfs4_state
*state
= NULL
;
1544 struct nfs_server
*server
= NFS_SERVER(dir
);
1545 struct nfs4_opendata
*opendata
;
1548 /* Protect against reboot recovery conflicts */
1550 if (!(sp
= nfs4_get_state_owner(server
, cred
))) {
1551 dprintk("nfs4_do_open: nfs4_get_state_owner failed!\n");
1554 status
= nfs4_recover_expired_lease(server
);
1556 goto err_put_state_owner
;
1557 if (path
->dentry
->d_inode
!= NULL
)
1558 nfs4_return_incompatible_delegation(path
->dentry
->d_inode
, fmode
);
1560 opendata
= nfs4_opendata_alloc(path
, sp
, fmode
, flags
, sattr
);
1561 if (opendata
== NULL
)
1562 goto err_put_state_owner
;
1564 if (path
->dentry
->d_inode
!= NULL
)
1565 opendata
->state
= nfs4_get_open_state(path
->dentry
->d_inode
, sp
);
1567 status
= _nfs4_proc_open(opendata
);
1569 goto err_opendata_put
;
1571 if (opendata
->o_arg
.open_flags
& O_EXCL
)
1572 nfs4_exclusive_attrset(opendata
, sattr
);
1574 state
= nfs4_opendata_to_nfs4_state(opendata
);
1575 status
= PTR_ERR(state
);
1577 goto err_opendata_put
;
1578 nfs4_opendata_put(opendata
);
1579 nfs4_put_state_owner(sp
);
1583 nfs4_opendata_put(opendata
);
1584 err_put_state_owner
:
1585 nfs4_put_state_owner(sp
);
1592 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
)
1594 struct nfs4_exception exception
= { };
1595 struct nfs4_state
*res
;
1599 status
= _nfs4_do_open(dir
, path
, fmode
, flags
, sattr
, cred
, &res
);
1602 /* NOTE: BAD_SEQID means the server and client disagree about the
1603 * book-keeping w.r.t. state-changing operations
1604 * (OPEN/CLOSE/LOCK/LOCKU...)
1605 * It is actually a sign of a bug on the client or on the server.
1607 * If we receive a BAD_SEQID error in the particular case of
1608 * doing an OPEN, we assume that nfs_increment_open_seqid() will
1609 * have unhashed the old state_owner for us, and that we can
1610 * therefore safely retry using a new one. We should still warn
1611 * the user though...
1613 if (status
== -NFS4ERR_BAD_SEQID
) {
1614 printk(KERN_WARNING
"NFS: v4 server %s "
1615 " returned a bad sequence-id error!\n",
1616 NFS_SERVER(dir
)->nfs_client
->cl_hostname
);
1617 exception
.retry
= 1;
1621 * BAD_STATEID on OPEN means that the server cancelled our
1622 * state before it received the OPEN_CONFIRM.
1623 * Recover by retrying the request as per the discussion
1624 * on Page 181 of RFC3530.
1626 if (status
== -NFS4ERR_BAD_STATEID
) {
1627 exception
.retry
= 1;
1630 if (status
== -EAGAIN
) {
1631 /* We must have found a delegation */
1632 exception
.retry
= 1;
1635 res
= ERR_PTR(nfs4_handle_exception(NFS_SERVER(dir
),
1636 status
, &exception
));
1637 } while (exception
.retry
);
1641 static int _nfs4_do_setattr(struct inode
*inode
, struct rpc_cred
*cred
,
1642 struct nfs_fattr
*fattr
, struct iattr
*sattr
,
1643 struct nfs4_state
*state
)
1645 struct nfs_server
*server
= NFS_SERVER(inode
);
1646 struct nfs_setattrargs arg
= {
1647 .fh
= NFS_FH(inode
),
1650 .bitmask
= server
->attr_bitmask
,
1652 struct nfs_setattrres res
= {
1656 struct rpc_message msg
= {
1657 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETATTR
],
1662 unsigned long timestamp
= jiffies
;
1665 nfs_fattr_init(fattr
);
1667 if (nfs4_copy_delegation_stateid(&arg
.stateid
, inode
)) {
1668 /* Use that stateid */
1669 } else if (state
!= NULL
) {
1670 nfs4_copy_stateid(&arg
.stateid
, state
, current
->files
);
1672 memcpy(&arg
.stateid
, &zero_stateid
, sizeof(arg
.stateid
));
1674 status
= nfs4_call_sync(server
, &msg
, &arg
, &res
, 1);
1675 if (status
== 0 && state
!= NULL
)
1676 renew_lease(server
, timestamp
);
1680 static int nfs4_do_setattr(struct inode
*inode
, struct rpc_cred
*cred
,
1681 struct nfs_fattr
*fattr
, struct iattr
*sattr
,
1682 struct nfs4_state
*state
)
1684 struct nfs_server
*server
= NFS_SERVER(inode
);
1685 struct nfs4_exception exception
= { };
1688 err
= nfs4_handle_exception(server
,
1689 _nfs4_do_setattr(inode
, cred
, fattr
, sattr
, state
),
1691 } while (exception
.retry
);
1695 struct nfs4_closedata
{
1697 struct inode
*inode
;
1698 struct nfs4_state
*state
;
1699 struct nfs_closeargs arg
;
1700 struct nfs_closeres res
;
1701 struct nfs_fattr fattr
;
1702 unsigned long timestamp
;
1705 static void nfs4_free_closedata(void *data
)
1707 struct nfs4_closedata
*calldata
= data
;
1708 struct nfs4_state_owner
*sp
= calldata
->state
->owner
;
1710 nfs4_put_open_state(calldata
->state
);
1711 nfs_free_seqid(calldata
->arg
.seqid
);
1712 nfs4_put_state_owner(sp
);
1713 path_put(&calldata
->path
);
1717 static void nfs4_close_clear_stateid_flags(struct nfs4_state
*state
,
1720 spin_lock(&state
->owner
->so_lock
);
1721 if (!(fmode
& FMODE_READ
))
1722 clear_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
1723 if (!(fmode
& FMODE_WRITE
))
1724 clear_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
1725 clear_bit(NFS_O_RDWR_STATE
, &state
->flags
);
1726 spin_unlock(&state
->owner
->so_lock
);
1729 static void nfs4_close_done(struct rpc_task
*task
, void *data
)
1731 struct nfs4_closedata
*calldata
= data
;
1732 struct nfs4_state
*state
= calldata
->state
;
1733 struct nfs_server
*server
= NFS_SERVER(calldata
->inode
);
1735 nfs4_sequence_done(server
, &calldata
->res
.seq_res
, task
->tk_status
);
1736 if (RPC_ASSASSINATED(task
))
1738 /* hmm. we are done with the inode, and in the process of freeing
1739 * the state_owner. we keep this around to process errors
1741 switch (task
->tk_status
) {
1743 nfs_set_open_stateid(state
, &calldata
->res
.stateid
, 0);
1744 renew_lease(server
, calldata
->timestamp
);
1745 nfs4_close_clear_stateid_flags(state
,
1746 calldata
->arg
.fmode
);
1748 case -NFS4ERR_STALE_STATEID
:
1749 case -NFS4ERR_OLD_STATEID
:
1750 case -NFS4ERR_BAD_STATEID
:
1751 case -NFS4ERR_EXPIRED
:
1752 if (calldata
->arg
.fmode
== 0)
1755 if (nfs4_async_handle_error(task
, server
, state
) == -EAGAIN
) {
1756 nfs_restart_rpc(task
, server
->nfs_client
);
1760 nfs_refresh_inode(calldata
->inode
, calldata
->res
.fattr
);
1763 static void nfs4_close_prepare(struct rpc_task
*task
, void *data
)
1765 struct nfs4_closedata
*calldata
= data
;
1766 struct nfs4_state
*state
= calldata
->state
;
1769 if (nfs_wait_on_sequence(calldata
->arg
.seqid
, task
) != 0)
1772 task
->tk_msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_OPEN_DOWNGRADE
];
1773 calldata
->arg
.fmode
= FMODE_READ
|FMODE_WRITE
;
1774 spin_lock(&state
->owner
->so_lock
);
1775 /* Calculate the change in open mode */
1776 if (state
->n_rdwr
== 0) {
1777 if (state
->n_rdonly
== 0) {
1778 call_close
|= test_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
1779 call_close
|= test_bit(NFS_O_RDWR_STATE
, &state
->flags
);
1780 calldata
->arg
.fmode
&= ~FMODE_READ
;
1782 if (state
->n_wronly
== 0) {
1783 call_close
|= test_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
1784 call_close
|= test_bit(NFS_O_RDWR_STATE
, &state
->flags
);
1785 calldata
->arg
.fmode
&= ~FMODE_WRITE
;
1788 spin_unlock(&state
->owner
->so_lock
);
1791 /* Note: exit _without_ calling nfs4_close_done */
1792 task
->tk_action
= NULL
;
1796 if (calldata
->arg
.fmode
== 0)
1797 task
->tk_msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_CLOSE
];
1799 nfs_fattr_init(calldata
->res
.fattr
);
1800 calldata
->timestamp
= jiffies
;
1801 if (nfs4_setup_sequence((NFS_SERVER(calldata
->inode
))->nfs_client
,
1802 &calldata
->arg
.seq_args
, &calldata
->res
.seq_res
,
1805 rpc_call_start(task
);
1808 static const struct rpc_call_ops nfs4_close_ops
= {
1809 .rpc_call_prepare
= nfs4_close_prepare
,
1810 .rpc_call_done
= nfs4_close_done
,
1811 .rpc_release
= nfs4_free_closedata
,
1815 * It is possible for data to be read/written from a mem-mapped file
1816 * after the sys_close call (which hits the vfs layer as a flush).
1817 * This means that we can't safely call nfsv4 close on a file until
1818 * the inode is cleared. This in turn means that we are not good
1819 * NFSv4 citizens - we do not indicate to the server to update the file's
1820 * share state even when we are done with one of the three share
1821 * stateid's in the inode.
1823 * NOTE: Caller must be holding the sp->so_owner semaphore!
1825 int nfs4_do_close(struct path
*path
, struct nfs4_state
*state
, int wait
)
1827 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
1828 struct nfs4_closedata
*calldata
;
1829 struct nfs4_state_owner
*sp
= state
->owner
;
1830 struct rpc_task
*task
;
1831 struct rpc_message msg
= {
1832 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_CLOSE
],
1833 .rpc_cred
= state
->owner
->so_cred
,
1835 struct rpc_task_setup task_setup_data
= {
1836 .rpc_client
= server
->client
,
1837 .rpc_message
= &msg
,
1838 .callback_ops
= &nfs4_close_ops
,
1839 .workqueue
= nfsiod_workqueue
,
1840 .flags
= RPC_TASK_ASYNC
,
1842 int status
= -ENOMEM
;
1844 calldata
= kzalloc(sizeof(*calldata
), GFP_KERNEL
);
1845 if (calldata
== NULL
)
1847 calldata
->inode
= state
->inode
;
1848 calldata
->state
= state
;
1849 calldata
->arg
.fh
= NFS_FH(state
->inode
);
1850 calldata
->arg
.stateid
= &state
->open_stateid
;
1851 if (nfs4_has_session(server
->nfs_client
))
1852 memset(calldata
->arg
.stateid
->data
, 0, 4); /* clear seqid */
1853 /* Serialization for the sequence id */
1854 calldata
->arg
.seqid
= nfs_alloc_seqid(&state
->owner
->so_seqid
);
1855 if (calldata
->arg
.seqid
== NULL
)
1856 goto out_free_calldata
;
1857 calldata
->arg
.fmode
= 0;
1858 calldata
->arg
.bitmask
= server
->cache_consistency_bitmask
;
1859 calldata
->res
.fattr
= &calldata
->fattr
;
1860 calldata
->res
.seqid
= calldata
->arg
.seqid
;
1861 calldata
->res
.server
= server
;
1862 calldata
->res
.seq_res
.sr_slotid
= NFS4_MAX_SLOT_TABLE
;
1863 calldata
->path
.mnt
= mntget(path
->mnt
);
1864 calldata
->path
.dentry
= dget(path
->dentry
);
1866 msg
.rpc_argp
= &calldata
->arg
,
1867 msg
.rpc_resp
= &calldata
->res
,
1868 task_setup_data
.callback_data
= calldata
;
1869 task
= rpc_run_task(&task_setup_data
);
1871 return PTR_ERR(task
);
1874 status
= rpc_wait_for_completion_task(task
);
1880 nfs4_put_open_state(state
);
1881 nfs4_put_state_owner(sp
);
1885 static int nfs4_intent_set_file(struct nameidata
*nd
, struct path
*path
, struct nfs4_state
*state
, fmode_t fmode
)
1890 /* If the open_intent is for execute, we have an extra check to make */
1891 if (fmode
& FMODE_EXEC
) {
1892 ret
= nfs_may_open(state
->inode
,
1893 state
->owner
->so_cred
,
1894 nd
->intent
.open
.flags
);
1898 filp
= lookup_instantiate_filp(nd
, path
->dentry
, NULL
);
1899 if (!IS_ERR(filp
)) {
1900 struct nfs_open_context
*ctx
;
1901 ctx
= nfs_file_open_context(filp
);
1905 ret
= PTR_ERR(filp
);
1907 nfs4_close_sync(path
, state
, fmode
& (FMODE_READ
|FMODE_WRITE
));
1912 nfs4_atomic_open(struct inode
*dir
, struct dentry
*dentry
, struct nameidata
*nd
)
1914 struct path path
= {
1915 .mnt
= nd
->path
.mnt
,
1918 struct dentry
*parent
;
1920 struct rpc_cred
*cred
;
1921 struct nfs4_state
*state
;
1923 fmode_t fmode
= nd
->intent
.open
.flags
& (FMODE_READ
| FMODE_WRITE
| FMODE_EXEC
);
1925 if (nd
->flags
& LOOKUP_CREATE
) {
1926 attr
.ia_mode
= nd
->intent
.open
.create_mode
;
1927 attr
.ia_valid
= ATTR_MODE
;
1928 if (!IS_POSIXACL(dir
))
1929 attr
.ia_mode
&= ~current_umask();
1932 BUG_ON(nd
->intent
.open
.flags
& O_CREAT
);
1935 cred
= rpc_lookup_cred();
1937 return (struct dentry
*)cred
;
1938 parent
= dentry
->d_parent
;
1939 /* Protect against concurrent sillydeletes */
1940 nfs_block_sillyrename(parent
);
1941 state
= nfs4_do_open(dir
, &path
, fmode
, nd
->intent
.open
.flags
, &attr
, cred
);
1943 if (IS_ERR(state
)) {
1944 if (PTR_ERR(state
) == -ENOENT
) {
1945 d_add(dentry
, NULL
);
1946 nfs_set_verifier(dentry
, nfs_save_change_attribute(dir
));
1948 nfs_unblock_sillyrename(parent
);
1949 return (struct dentry
*)state
;
1951 res
= d_add_unique(dentry
, igrab(state
->inode
));
1954 nfs_set_verifier(path
.dentry
, nfs_save_change_attribute(dir
));
1955 nfs_unblock_sillyrename(parent
);
1956 nfs4_intent_set_file(nd
, &path
, state
, fmode
);
1961 nfs4_open_revalidate(struct inode
*dir
, struct dentry
*dentry
, int openflags
, struct nameidata
*nd
)
1963 struct path path
= {
1964 .mnt
= nd
->path
.mnt
,
1967 struct rpc_cred
*cred
;
1968 struct nfs4_state
*state
;
1969 fmode_t fmode
= openflags
& (FMODE_READ
| FMODE_WRITE
);
1971 cred
= rpc_lookup_cred();
1973 return PTR_ERR(cred
);
1974 state
= nfs4_do_open(dir
, &path
, fmode
, openflags
, NULL
, cred
);
1976 if (IS_ERR(state
)) {
1977 switch (PTR_ERR(state
)) {
1983 lookup_instantiate_filp(nd
, (struct dentry
*)state
, NULL
);
1989 if (state
->inode
== dentry
->d_inode
) {
1990 nfs_set_verifier(dentry
, nfs_save_change_attribute(dir
));
1991 nfs4_intent_set_file(nd
, &path
, state
, fmode
);
1994 nfs4_close_sync(&path
, state
, fmode
);
2000 static void nfs4_close_context(struct nfs_open_context
*ctx
, int is_sync
)
2002 if (ctx
->state
== NULL
)
2005 nfs4_close_sync(&ctx
->path
, ctx
->state
, ctx
->mode
);
2007 nfs4_close_state(&ctx
->path
, ctx
->state
, ctx
->mode
);
2010 static int _nfs4_server_capabilities(struct nfs_server
*server
, struct nfs_fh
*fhandle
)
2012 struct nfs4_server_caps_arg args
= {
2015 struct nfs4_server_caps_res res
= {};
2016 struct rpc_message msg
= {
2017 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SERVER_CAPS
],
2023 status
= nfs4_call_sync(server
, &msg
, &args
, &res
, 0);
2025 memcpy(server
->attr_bitmask
, res
.attr_bitmask
, sizeof(server
->attr_bitmask
));
2026 server
->caps
&= ~(NFS_CAP_ACLS
|NFS_CAP_HARDLINKS
|
2027 NFS_CAP_SYMLINKS
|NFS_CAP_FILEID
|
2028 NFS_CAP_MODE
|NFS_CAP_NLINK
|NFS_CAP_OWNER
|
2029 NFS_CAP_OWNER_GROUP
|NFS_CAP_ATIME
|
2030 NFS_CAP_CTIME
|NFS_CAP_MTIME
);
2031 if (res
.attr_bitmask
[0] & FATTR4_WORD0_ACL
)
2032 server
->caps
|= NFS_CAP_ACLS
;
2033 if (res
.has_links
!= 0)
2034 server
->caps
|= NFS_CAP_HARDLINKS
;
2035 if (res
.has_symlinks
!= 0)
2036 server
->caps
|= NFS_CAP_SYMLINKS
;
2037 if (res
.attr_bitmask
[0] & FATTR4_WORD0_FILEID
)
2038 server
->caps
|= NFS_CAP_FILEID
;
2039 if (res
.attr_bitmask
[1] & FATTR4_WORD1_MODE
)
2040 server
->caps
|= NFS_CAP_MODE
;
2041 if (res
.attr_bitmask
[1] & FATTR4_WORD1_NUMLINKS
)
2042 server
->caps
|= NFS_CAP_NLINK
;
2043 if (res
.attr_bitmask
[1] & FATTR4_WORD1_OWNER
)
2044 server
->caps
|= NFS_CAP_OWNER
;
2045 if (res
.attr_bitmask
[1] & FATTR4_WORD1_OWNER_GROUP
)
2046 server
->caps
|= NFS_CAP_OWNER_GROUP
;
2047 if (res
.attr_bitmask
[1] & FATTR4_WORD1_TIME_ACCESS
)
2048 server
->caps
|= NFS_CAP_ATIME
;
2049 if (res
.attr_bitmask
[1] & FATTR4_WORD1_TIME_METADATA
)
2050 server
->caps
|= NFS_CAP_CTIME
;
2051 if (res
.attr_bitmask
[1] & FATTR4_WORD1_TIME_MODIFY
)
2052 server
->caps
|= NFS_CAP_MTIME
;
2054 memcpy(server
->cache_consistency_bitmask
, res
.attr_bitmask
, sizeof(server
->cache_consistency_bitmask
));
2055 server
->cache_consistency_bitmask
[0] &= FATTR4_WORD0_CHANGE
|FATTR4_WORD0_SIZE
;
2056 server
->cache_consistency_bitmask
[1] &= FATTR4_WORD1_TIME_METADATA
|FATTR4_WORD1_TIME_MODIFY
;
2057 server
->acl_bitmask
= res
.acl_bitmask
;
2063 int nfs4_server_capabilities(struct nfs_server
*server
, struct nfs_fh
*fhandle
)
2065 struct nfs4_exception exception
= { };
2068 err
= nfs4_handle_exception(server
,
2069 _nfs4_server_capabilities(server
, fhandle
),
2071 } while (exception
.retry
);
2075 static int _nfs4_lookup_root(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
2076 struct nfs_fsinfo
*info
)
2078 struct nfs4_lookup_root_arg args
= {
2079 .bitmask
= nfs4_fattr_bitmap
,
2081 struct nfs4_lookup_res res
= {
2083 .fattr
= info
->fattr
,
2086 struct rpc_message msg
= {
2087 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOOKUP_ROOT
],
2092 nfs_fattr_init(info
->fattr
);
2093 return nfs4_call_sync(server
, &msg
, &args
, &res
, 0);
2096 static int nfs4_lookup_root(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
2097 struct nfs_fsinfo
*info
)
2099 struct nfs4_exception exception
= { };
2102 err
= nfs4_handle_exception(server
,
2103 _nfs4_lookup_root(server
, fhandle
, info
),
2105 } while (exception
.retry
);
2110 * get the file handle for the "/" directory on the server
2112 static int nfs4_proc_get_root(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
2113 struct nfs_fsinfo
*info
)
2117 status
= nfs4_lookup_root(server
, fhandle
, info
);
2119 status
= nfs4_server_capabilities(server
, fhandle
);
2121 status
= nfs4_do_fsinfo(server
, fhandle
, info
);
2122 return nfs4_map_errors(status
);
2126 * Get locations and (maybe) other attributes of a referral.
2127 * Note that we'll actually follow the referral later when
2128 * we detect fsid mismatch in inode revalidation
2130 static int nfs4_get_referral(struct inode
*dir
, const struct qstr
*name
, struct nfs_fattr
*fattr
, struct nfs_fh
*fhandle
)
2132 int status
= -ENOMEM
;
2133 struct page
*page
= NULL
;
2134 struct nfs4_fs_locations
*locations
= NULL
;
2136 page
= alloc_page(GFP_KERNEL
);
2139 locations
= kmalloc(sizeof(struct nfs4_fs_locations
), GFP_KERNEL
);
2140 if (locations
== NULL
)
2143 status
= nfs4_proc_fs_locations(dir
, name
, locations
, page
);
2146 /* Make sure server returned a different fsid for the referral */
2147 if (nfs_fsid_equal(&NFS_SERVER(dir
)->fsid
, &locations
->fattr
.fsid
)) {
2148 dprintk("%s: server did not return a different fsid for a referral at %s\n", __func__
, name
->name
);
2153 memcpy(fattr
, &locations
->fattr
, sizeof(struct nfs_fattr
));
2154 fattr
->valid
|= NFS_ATTR_FATTR_V4_REFERRAL
;
2156 fattr
->mode
= S_IFDIR
;
2157 memset(fhandle
, 0, sizeof(struct nfs_fh
));
2166 static int _nfs4_proc_getattr(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fattr
*fattr
)
2168 struct nfs4_getattr_arg args
= {
2170 .bitmask
= server
->attr_bitmask
,
2172 struct nfs4_getattr_res res
= {
2176 struct rpc_message msg
= {
2177 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GETATTR
],
2182 nfs_fattr_init(fattr
);
2183 return nfs4_call_sync(server
, &msg
, &args
, &res
, 0);
2186 static int nfs4_proc_getattr(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fattr
*fattr
)
2188 struct nfs4_exception exception
= { };
2191 err
= nfs4_handle_exception(server
,
2192 _nfs4_proc_getattr(server
, fhandle
, fattr
),
2194 } while (exception
.retry
);
2199 * The file is not closed if it is opened due to the a request to change
2200 * the size of the file. The open call will not be needed once the
2201 * VFS layer lookup-intents are implemented.
2203 * Close is called when the inode is destroyed.
2204 * If we haven't opened the file for O_WRONLY, we
2205 * need to in the size_change case to obtain a stateid.
2208 * Because OPEN is always done by name in nfsv4, it is
2209 * possible that we opened a different file by the same
2210 * name. We can recognize this race condition, but we
2211 * can't do anything about it besides returning an error.
2213 * This will be fixed with VFS changes (lookup-intent).
2216 nfs4_proc_setattr(struct dentry
*dentry
, struct nfs_fattr
*fattr
,
2217 struct iattr
*sattr
)
2219 struct inode
*inode
= dentry
->d_inode
;
2220 struct rpc_cred
*cred
= NULL
;
2221 struct nfs4_state
*state
= NULL
;
2224 nfs_fattr_init(fattr
);
2226 /* Search for an existing open(O_WRITE) file */
2227 if (sattr
->ia_valid
& ATTR_FILE
) {
2228 struct nfs_open_context
*ctx
;
2230 ctx
= nfs_file_open_context(sattr
->ia_file
);
2237 status
= nfs4_do_setattr(inode
, cred
, fattr
, sattr
, state
);
2239 nfs_setattr_update_inode(inode
, sattr
);
2243 static int _nfs4_proc_lookupfh(struct nfs_server
*server
, const struct nfs_fh
*dirfh
,
2244 const struct qstr
*name
, struct nfs_fh
*fhandle
,
2245 struct nfs_fattr
*fattr
)
2248 struct nfs4_lookup_arg args
= {
2249 .bitmask
= server
->attr_bitmask
,
2253 struct nfs4_lookup_res res
= {
2258 struct rpc_message msg
= {
2259 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOOKUP
],
2264 nfs_fattr_init(fattr
);
2266 dprintk("NFS call lookupfh %s\n", name
->name
);
2267 status
= nfs4_call_sync(server
, &msg
, &args
, &res
, 0);
2268 dprintk("NFS reply lookupfh: %d\n", status
);
2272 static int nfs4_proc_lookupfh(struct nfs_server
*server
, struct nfs_fh
*dirfh
,
2273 struct qstr
*name
, struct nfs_fh
*fhandle
,
2274 struct nfs_fattr
*fattr
)
2276 struct nfs4_exception exception
= { };
2279 err
= _nfs4_proc_lookupfh(server
, dirfh
, name
, fhandle
, fattr
);
2281 if (err
== -NFS4ERR_MOVED
) {
2285 err
= nfs4_handle_exception(server
, err
, &exception
);
2286 } while (exception
.retry
);
2290 static int _nfs4_proc_lookup(struct inode
*dir
, const struct qstr
*name
,
2291 struct nfs_fh
*fhandle
, struct nfs_fattr
*fattr
)
2295 dprintk("NFS call lookup %s\n", name
->name
);
2296 status
= _nfs4_proc_lookupfh(NFS_SERVER(dir
), NFS_FH(dir
), name
, fhandle
, fattr
);
2297 if (status
== -NFS4ERR_MOVED
)
2298 status
= nfs4_get_referral(dir
, name
, fattr
, fhandle
);
2299 dprintk("NFS reply lookup: %d\n", status
);
2303 static int nfs4_proc_lookup(struct inode
*dir
, struct qstr
*name
, struct nfs_fh
*fhandle
, struct nfs_fattr
*fattr
)
2305 struct nfs4_exception exception
= { };
2308 err
= nfs4_handle_exception(NFS_SERVER(dir
),
2309 _nfs4_proc_lookup(dir
, name
, fhandle
, fattr
),
2311 } while (exception
.retry
);
2315 static int _nfs4_proc_access(struct inode
*inode
, struct nfs_access_entry
*entry
)
2317 struct nfs_server
*server
= NFS_SERVER(inode
);
2318 struct nfs_fattr fattr
;
2319 struct nfs4_accessargs args
= {
2320 .fh
= NFS_FH(inode
),
2321 .bitmask
= server
->attr_bitmask
,
2323 struct nfs4_accessres res
= {
2327 struct rpc_message msg
= {
2328 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_ACCESS
],
2331 .rpc_cred
= entry
->cred
,
2333 int mode
= entry
->mask
;
2337 * Determine which access bits we want to ask for...
2339 if (mode
& MAY_READ
)
2340 args
.access
|= NFS4_ACCESS_READ
;
2341 if (S_ISDIR(inode
->i_mode
)) {
2342 if (mode
& MAY_WRITE
)
2343 args
.access
|= NFS4_ACCESS_MODIFY
| NFS4_ACCESS_EXTEND
| NFS4_ACCESS_DELETE
;
2344 if (mode
& MAY_EXEC
)
2345 args
.access
|= NFS4_ACCESS_LOOKUP
;
2347 if (mode
& MAY_WRITE
)
2348 args
.access
|= NFS4_ACCESS_MODIFY
| NFS4_ACCESS_EXTEND
;
2349 if (mode
& MAY_EXEC
)
2350 args
.access
|= NFS4_ACCESS_EXECUTE
;
2352 nfs_fattr_init(&fattr
);
2353 status
= nfs4_call_sync(server
, &msg
, &args
, &res
, 0);
2356 if (res
.access
& NFS4_ACCESS_READ
)
2357 entry
->mask
|= MAY_READ
;
2358 if (res
.access
& (NFS4_ACCESS_MODIFY
| NFS4_ACCESS_EXTEND
| NFS4_ACCESS_DELETE
))
2359 entry
->mask
|= MAY_WRITE
;
2360 if (res
.access
& (NFS4_ACCESS_LOOKUP
|NFS4_ACCESS_EXECUTE
))
2361 entry
->mask
|= MAY_EXEC
;
2362 nfs_refresh_inode(inode
, &fattr
);
2367 static int nfs4_proc_access(struct inode
*inode
, struct nfs_access_entry
*entry
)
2369 struct nfs4_exception exception
= { };
2372 err
= nfs4_handle_exception(NFS_SERVER(inode
),
2373 _nfs4_proc_access(inode
, entry
),
2375 } while (exception
.retry
);
2380 * TODO: For the time being, we don't try to get any attributes
2381 * along with any of the zero-copy operations READ, READDIR,
2384 * In the case of the first three, we want to put the GETATTR
2385 * after the read-type operation -- this is because it is hard
2386 * to predict the length of a GETATTR response in v4, and thus
2387 * align the READ data correctly. This means that the GETATTR
2388 * may end up partially falling into the page cache, and we should
2389 * shift it into the 'tail' of the xdr_buf before processing.
2390 * To do this efficiently, we need to know the total length
2391 * of data received, which doesn't seem to be available outside
2394 * In the case of WRITE, we also want to put the GETATTR after
2395 * the operation -- in this case because we want to make sure
2396 * we get the post-operation mtime and size. This means that
2397 * we can't use xdr_encode_pages() as written: we need a variant
2398 * of it which would leave room in the 'tail' iovec.
2400 * Both of these changes to the XDR layer would in fact be quite
2401 * minor, but I decided to leave them for a subsequent patch.
2403 static int _nfs4_proc_readlink(struct inode
*inode
, struct page
*page
,
2404 unsigned int pgbase
, unsigned int pglen
)
2406 struct nfs4_readlink args
= {
2407 .fh
= NFS_FH(inode
),
2412 struct nfs4_readlink_res res
;
2413 struct rpc_message msg
= {
2414 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_READLINK
],
2419 return nfs4_call_sync(NFS_SERVER(inode
), &msg
, &args
, &res
, 0);
2422 static int nfs4_proc_readlink(struct inode
*inode
, struct page
*page
,
2423 unsigned int pgbase
, unsigned int pglen
)
2425 struct nfs4_exception exception
= { };
2428 err
= nfs4_handle_exception(NFS_SERVER(inode
),
2429 _nfs4_proc_readlink(inode
, page
, pgbase
, pglen
),
2431 } while (exception
.retry
);
2437 * We will need to arrange for the VFS layer to provide an atomic open.
2438 * Until then, this create/open method is prone to inefficiency and race
2439 * conditions due to the lookup, create, and open VFS calls from sys_open()
2440 * placed on the wire.
2442 * Given the above sorry state of affairs, I'm simply sending an OPEN.
2443 * The file will be opened again in the subsequent VFS open call
2444 * (nfs4_proc_file_open).
2446 * The open for read will just hang around to be used by any process that
2447 * opens the file O_RDONLY. This will all be resolved with the VFS changes.
2451 nfs4_proc_create(struct inode
*dir
, struct dentry
*dentry
, struct iattr
*sattr
,
2452 int flags
, struct nameidata
*nd
)
2454 struct path path
= {
2455 .mnt
= nd
->path
.mnt
,
2458 struct nfs4_state
*state
;
2459 struct rpc_cred
*cred
;
2460 fmode_t fmode
= flags
& (FMODE_READ
| FMODE_WRITE
);
2463 cred
= rpc_lookup_cred();
2465 status
= PTR_ERR(cred
);
2468 state
= nfs4_do_open(dir
, &path
, fmode
, flags
, sattr
, cred
);
2470 if (IS_ERR(state
)) {
2471 status
= PTR_ERR(state
);
2474 d_add(dentry
, igrab(state
->inode
));
2475 nfs_set_verifier(dentry
, nfs_save_change_attribute(dir
));
2476 if (flags
& O_EXCL
) {
2477 struct nfs_fattr fattr
;
2478 status
= nfs4_do_setattr(state
->inode
, cred
, &fattr
, sattr
, state
);
2480 nfs_setattr_update_inode(state
->inode
, sattr
);
2481 nfs_post_op_update_inode(state
->inode
, &fattr
);
2483 if (status
== 0 && (nd
->flags
& LOOKUP_OPEN
) != 0)
2484 status
= nfs4_intent_set_file(nd
, &path
, state
, fmode
);
2486 nfs4_close_sync(&path
, state
, fmode
);
2493 static int _nfs4_proc_remove(struct inode
*dir
, struct qstr
*name
)
2495 struct nfs_server
*server
= NFS_SERVER(dir
);
2496 struct nfs_removeargs args
= {
2498 .name
.len
= name
->len
,
2499 .name
.name
= name
->name
,
2500 .bitmask
= server
->attr_bitmask
,
2502 struct nfs_removeres res
= {
2505 struct rpc_message msg
= {
2506 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_REMOVE
],
2512 nfs_fattr_init(&res
.dir_attr
);
2513 status
= nfs4_call_sync(server
, &msg
, &args
, &res
, 1);
2515 update_changeattr(dir
, &res
.cinfo
);
2516 nfs_post_op_update_inode(dir
, &res
.dir_attr
);
2521 static int nfs4_proc_remove(struct inode
*dir
, struct qstr
*name
)
2523 struct nfs4_exception exception
= { };
2526 err
= nfs4_handle_exception(NFS_SERVER(dir
),
2527 _nfs4_proc_remove(dir
, name
),
2529 } while (exception
.retry
);
2533 static void nfs4_proc_unlink_setup(struct rpc_message
*msg
, struct inode
*dir
)
2535 struct nfs_server
*server
= NFS_SERVER(dir
);
2536 struct nfs_removeargs
*args
= msg
->rpc_argp
;
2537 struct nfs_removeres
*res
= msg
->rpc_resp
;
2539 args
->bitmask
= server
->cache_consistency_bitmask
;
2540 res
->server
= server
;
2541 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_REMOVE
];
2544 static int nfs4_proc_unlink_done(struct rpc_task
*task
, struct inode
*dir
)
2546 struct nfs_removeres
*res
= task
->tk_msg
.rpc_resp
;
2548 nfs4_sequence_done(res
->server
, &res
->seq_res
, task
->tk_status
);
2549 if (nfs4_async_handle_error(task
, res
->server
, NULL
) == -EAGAIN
)
2551 update_changeattr(dir
, &res
->cinfo
);
2552 nfs_post_op_update_inode(dir
, &res
->dir_attr
);
2556 static int _nfs4_proc_rename(struct inode
*old_dir
, struct qstr
*old_name
,
2557 struct inode
*new_dir
, struct qstr
*new_name
)
2559 struct nfs_server
*server
= NFS_SERVER(old_dir
);
2560 struct nfs4_rename_arg arg
= {
2561 .old_dir
= NFS_FH(old_dir
),
2562 .new_dir
= NFS_FH(new_dir
),
2563 .old_name
= old_name
,
2564 .new_name
= new_name
,
2565 .bitmask
= server
->attr_bitmask
,
2567 struct nfs_fattr old_fattr
, new_fattr
;
2568 struct nfs4_rename_res res
= {
2570 .old_fattr
= &old_fattr
,
2571 .new_fattr
= &new_fattr
,
2573 struct rpc_message msg
= {
2574 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RENAME
],
2580 nfs_fattr_init(res
.old_fattr
);
2581 nfs_fattr_init(res
.new_fattr
);
2582 status
= nfs4_call_sync(server
, &msg
, &arg
, &res
, 1);
2585 update_changeattr(old_dir
, &res
.old_cinfo
);
2586 nfs_post_op_update_inode(old_dir
, res
.old_fattr
);
2587 update_changeattr(new_dir
, &res
.new_cinfo
);
2588 nfs_post_op_update_inode(new_dir
, res
.new_fattr
);
2593 static int nfs4_proc_rename(struct inode
*old_dir
, struct qstr
*old_name
,
2594 struct inode
*new_dir
, struct qstr
*new_name
)
2596 struct nfs4_exception exception
= { };
2599 err
= nfs4_handle_exception(NFS_SERVER(old_dir
),
2600 _nfs4_proc_rename(old_dir
, old_name
,
2603 } while (exception
.retry
);
2607 static int _nfs4_proc_link(struct inode
*inode
, struct inode
*dir
, struct qstr
*name
)
2609 struct nfs_server
*server
= NFS_SERVER(inode
);
2610 struct nfs4_link_arg arg
= {
2611 .fh
= NFS_FH(inode
),
2612 .dir_fh
= NFS_FH(dir
),
2614 .bitmask
= server
->attr_bitmask
,
2616 struct nfs_fattr fattr
, dir_attr
;
2617 struct nfs4_link_res res
= {
2620 .dir_attr
= &dir_attr
,
2622 struct rpc_message msg
= {
2623 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LINK
],
2629 nfs_fattr_init(res
.fattr
);
2630 nfs_fattr_init(res
.dir_attr
);
2631 status
= nfs4_call_sync(server
, &msg
, &arg
, &res
, 1);
2633 update_changeattr(dir
, &res
.cinfo
);
2634 nfs_post_op_update_inode(dir
, res
.dir_attr
);
2635 nfs_post_op_update_inode(inode
, res
.fattr
);
2641 static int nfs4_proc_link(struct inode
*inode
, struct inode
*dir
, struct qstr
*name
)
2643 struct nfs4_exception exception
= { };
2646 err
= nfs4_handle_exception(NFS_SERVER(inode
),
2647 _nfs4_proc_link(inode
, dir
, name
),
2649 } while (exception
.retry
);
2653 struct nfs4_createdata
{
2654 struct rpc_message msg
;
2655 struct nfs4_create_arg arg
;
2656 struct nfs4_create_res res
;
2658 struct nfs_fattr fattr
;
2659 struct nfs_fattr dir_fattr
;
2662 static struct nfs4_createdata
*nfs4_alloc_createdata(struct inode
*dir
,
2663 struct qstr
*name
, struct iattr
*sattr
, u32 ftype
)
2665 struct nfs4_createdata
*data
;
2667 data
= kzalloc(sizeof(*data
), GFP_KERNEL
);
2669 struct nfs_server
*server
= NFS_SERVER(dir
);
2671 data
->msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_CREATE
];
2672 data
->msg
.rpc_argp
= &data
->arg
;
2673 data
->msg
.rpc_resp
= &data
->res
;
2674 data
->arg
.dir_fh
= NFS_FH(dir
);
2675 data
->arg
.server
= server
;
2676 data
->arg
.name
= name
;
2677 data
->arg
.attrs
= sattr
;
2678 data
->arg
.ftype
= ftype
;
2679 data
->arg
.bitmask
= server
->attr_bitmask
;
2680 data
->res
.server
= server
;
2681 data
->res
.fh
= &data
->fh
;
2682 data
->res
.fattr
= &data
->fattr
;
2683 data
->res
.dir_fattr
= &data
->dir_fattr
;
2684 nfs_fattr_init(data
->res
.fattr
);
2685 nfs_fattr_init(data
->res
.dir_fattr
);
2690 static int nfs4_do_create(struct inode
*dir
, struct dentry
*dentry
, struct nfs4_createdata
*data
)
2692 int status
= nfs4_call_sync(NFS_SERVER(dir
), &data
->msg
,
2693 &data
->arg
, &data
->res
, 1);
2695 update_changeattr(dir
, &data
->res
.dir_cinfo
);
2696 nfs_post_op_update_inode(dir
, data
->res
.dir_fattr
);
2697 status
= nfs_instantiate(dentry
, data
->res
.fh
, data
->res
.fattr
);
2702 static void nfs4_free_createdata(struct nfs4_createdata
*data
)
2707 static int _nfs4_proc_symlink(struct inode
*dir
, struct dentry
*dentry
,
2708 struct page
*page
, unsigned int len
, struct iattr
*sattr
)
2710 struct nfs4_createdata
*data
;
2711 int status
= -ENAMETOOLONG
;
2713 if (len
> NFS4_MAXPATHLEN
)
2717 data
= nfs4_alloc_createdata(dir
, &dentry
->d_name
, sattr
, NF4LNK
);
2721 data
->msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SYMLINK
];
2722 data
->arg
.u
.symlink
.pages
= &page
;
2723 data
->arg
.u
.symlink
.len
= len
;
2725 status
= nfs4_do_create(dir
, dentry
, data
);
2727 nfs4_free_createdata(data
);
2732 static int nfs4_proc_symlink(struct inode
*dir
, struct dentry
*dentry
,
2733 struct page
*page
, unsigned int len
, struct iattr
*sattr
)
2735 struct nfs4_exception exception
= { };
2738 err
= nfs4_handle_exception(NFS_SERVER(dir
),
2739 _nfs4_proc_symlink(dir
, dentry
, page
,
2742 } while (exception
.retry
);
2746 static int _nfs4_proc_mkdir(struct inode
*dir
, struct dentry
*dentry
,
2747 struct iattr
*sattr
)
2749 struct nfs4_createdata
*data
;
2750 int status
= -ENOMEM
;
2752 data
= nfs4_alloc_createdata(dir
, &dentry
->d_name
, sattr
, NF4DIR
);
2756 status
= nfs4_do_create(dir
, dentry
, data
);
2758 nfs4_free_createdata(data
);
2763 static int nfs4_proc_mkdir(struct inode
*dir
, struct dentry
*dentry
,
2764 struct iattr
*sattr
)
2766 struct nfs4_exception exception
= { };
2769 err
= nfs4_handle_exception(NFS_SERVER(dir
),
2770 _nfs4_proc_mkdir(dir
, dentry
, sattr
),
2772 } while (exception
.retry
);
2776 static int _nfs4_proc_readdir(struct dentry
*dentry
, struct rpc_cred
*cred
,
2777 u64 cookie
, struct page
*page
, unsigned int count
, int plus
)
2779 struct inode
*dir
= dentry
->d_inode
;
2780 struct nfs4_readdir_arg args
= {
2785 .bitmask
= NFS_SERVER(dentry
->d_inode
)->attr_bitmask
,
2787 struct nfs4_readdir_res res
;
2788 struct rpc_message msg
= {
2789 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_READDIR
],
2796 dprintk("%s: dentry = %s/%s, cookie = %Lu\n", __func__
,
2797 dentry
->d_parent
->d_name
.name
,
2798 dentry
->d_name
.name
,
2799 (unsigned long long)cookie
);
2800 nfs4_setup_readdir(cookie
, NFS_COOKIEVERF(dir
), dentry
, &args
);
2801 res
.pgbase
= args
.pgbase
;
2802 status
= nfs4_call_sync(NFS_SERVER(dir
), &msg
, &args
, &res
, 0);
2804 memcpy(NFS_COOKIEVERF(dir
), res
.verifier
.data
, NFS4_VERIFIER_SIZE
);
2806 nfs_invalidate_atime(dir
);
2808 dprintk("%s: returns %d\n", __func__
, status
);
2812 static int nfs4_proc_readdir(struct dentry
*dentry
, struct rpc_cred
*cred
,
2813 u64 cookie
, struct page
*page
, unsigned int count
, int plus
)
2815 struct nfs4_exception exception
= { };
2818 err
= nfs4_handle_exception(NFS_SERVER(dentry
->d_inode
),
2819 _nfs4_proc_readdir(dentry
, cred
, cookie
,
2822 } while (exception
.retry
);
2826 static int _nfs4_proc_mknod(struct inode
*dir
, struct dentry
*dentry
,
2827 struct iattr
*sattr
, dev_t rdev
)
2829 struct nfs4_createdata
*data
;
2830 int mode
= sattr
->ia_mode
;
2831 int status
= -ENOMEM
;
2833 BUG_ON(!(sattr
->ia_valid
& ATTR_MODE
));
2834 BUG_ON(!S_ISFIFO(mode
) && !S_ISBLK(mode
) && !S_ISCHR(mode
) && !S_ISSOCK(mode
));
2836 data
= nfs4_alloc_createdata(dir
, &dentry
->d_name
, sattr
, NF4SOCK
);
2841 data
->arg
.ftype
= NF4FIFO
;
2842 else if (S_ISBLK(mode
)) {
2843 data
->arg
.ftype
= NF4BLK
;
2844 data
->arg
.u
.device
.specdata1
= MAJOR(rdev
);
2845 data
->arg
.u
.device
.specdata2
= MINOR(rdev
);
2847 else if (S_ISCHR(mode
)) {
2848 data
->arg
.ftype
= NF4CHR
;
2849 data
->arg
.u
.device
.specdata1
= MAJOR(rdev
);
2850 data
->arg
.u
.device
.specdata2
= MINOR(rdev
);
2853 status
= nfs4_do_create(dir
, dentry
, data
);
2855 nfs4_free_createdata(data
);
2860 static int nfs4_proc_mknod(struct inode
*dir
, struct dentry
*dentry
,
2861 struct iattr
*sattr
, dev_t rdev
)
2863 struct nfs4_exception exception
= { };
2866 err
= nfs4_handle_exception(NFS_SERVER(dir
),
2867 _nfs4_proc_mknod(dir
, dentry
, sattr
, rdev
),
2869 } while (exception
.retry
);
2873 static int _nfs4_proc_statfs(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
2874 struct nfs_fsstat
*fsstat
)
2876 struct nfs4_statfs_arg args
= {
2878 .bitmask
= server
->attr_bitmask
,
2880 struct nfs4_statfs_res res
= {
2883 struct rpc_message msg
= {
2884 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_STATFS
],
2889 nfs_fattr_init(fsstat
->fattr
);
2890 return nfs4_call_sync(server
, &msg
, &args
, &res
, 0);
2893 static int nfs4_proc_statfs(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fsstat
*fsstat
)
2895 struct nfs4_exception exception
= { };
2898 err
= nfs4_handle_exception(server
,
2899 _nfs4_proc_statfs(server
, fhandle
, fsstat
),
2901 } while (exception
.retry
);
2905 static int _nfs4_do_fsinfo(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
2906 struct nfs_fsinfo
*fsinfo
)
2908 struct nfs4_fsinfo_arg args
= {
2910 .bitmask
= server
->attr_bitmask
,
2912 struct nfs4_fsinfo_res res
= {
2915 struct rpc_message msg
= {
2916 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_FSINFO
],
2921 return nfs4_call_sync(server
, &msg
, &args
, &res
, 0);
2924 static int nfs4_do_fsinfo(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fsinfo
*fsinfo
)
2926 struct nfs4_exception exception
= { };
2930 err
= nfs4_handle_exception(server
,
2931 _nfs4_do_fsinfo(server
, fhandle
, fsinfo
),
2933 } while (exception
.retry
);
2937 static int nfs4_proc_fsinfo(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fsinfo
*fsinfo
)
2939 nfs_fattr_init(fsinfo
->fattr
);
2940 return nfs4_do_fsinfo(server
, fhandle
, fsinfo
);
2943 static int _nfs4_proc_pathconf(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
2944 struct nfs_pathconf
*pathconf
)
2946 struct nfs4_pathconf_arg args
= {
2948 .bitmask
= server
->attr_bitmask
,
2950 struct nfs4_pathconf_res res
= {
2951 .pathconf
= pathconf
,
2953 struct rpc_message msg
= {
2954 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_PATHCONF
],
2959 /* None of the pathconf attributes are mandatory to implement */
2960 if ((args
.bitmask
[0] & nfs4_pathconf_bitmap
[0]) == 0) {
2961 memset(pathconf
, 0, sizeof(*pathconf
));
2965 nfs_fattr_init(pathconf
->fattr
);
2966 return nfs4_call_sync(server
, &msg
, &args
, &res
, 0);
2969 static int nfs4_proc_pathconf(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
2970 struct nfs_pathconf
*pathconf
)
2972 struct nfs4_exception exception
= { };
2976 err
= nfs4_handle_exception(server
,
2977 _nfs4_proc_pathconf(server
, fhandle
, pathconf
),
2979 } while (exception
.retry
);
2983 static int nfs4_read_done(struct rpc_task
*task
, struct nfs_read_data
*data
)
2985 struct nfs_server
*server
= NFS_SERVER(data
->inode
);
2987 dprintk("--> %s\n", __func__
);
2989 nfs4_sequence_done(server
, &data
->res
.seq_res
, task
->tk_status
);
2991 if (nfs4_async_handle_error(task
, server
, data
->args
.context
->state
) == -EAGAIN
) {
2992 nfs_restart_rpc(task
, server
->nfs_client
);
2996 nfs_invalidate_atime(data
->inode
);
2997 if (task
->tk_status
> 0)
2998 renew_lease(server
, data
->timestamp
);
3002 static void nfs4_proc_read_setup(struct nfs_read_data
*data
, struct rpc_message
*msg
)
3004 data
->timestamp
= jiffies
;
3005 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_READ
];
3008 static int nfs4_write_done(struct rpc_task
*task
, struct nfs_write_data
*data
)
3010 struct inode
*inode
= data
->inode
;
3012 nfs4_sequence_done(NFS_SERVER(inode
), &data
->res
.seq_res
,
3015 if (nfs4_async_handle_error(task
, NFS_SERVER(inode
), data
->args
.context
->state
) == -EAGAIN
) {
3016 nfs_restart_rpc(task
, NFS_SERVER(inode
)->nfs_client
);
3019 if (task
->tk_status
>= 0) {
3020 renew_lease(NFS_SERVER(inode
), data
->timestamp
);
3021 nfs_post_op_update_inode_force_wcc(inode
, data
->res
.fattr
);
3026 static void nfs4_proc_write_setup(struct nfs_write_data
*data
, struct rpc_message
*msg
)
3028 struct nfs_server
*server
= NFS_SERVER(data
->inode
);
3030 data
->args
.bitmask
= server
->cache_consistency_bitmask
;
3031 data
->res
.server
= server
;
3032 data
->timestamp
= jiffies
;
3034 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_WRITE
];
3037 static int nfs4_commit_done(struct rpc_task
*task
, struct nfs_write_data
*data
)
3039 struct inode
*inode
= data
->inode
;
3041 nfs4_sequence_done(NFS_SERVER(inode
), &data
->res
.seq_res
,
3043 if (nfs4_async_handle_error(task
, NFS_SERVER(inode
), NULL
) == -EAGAIN
) {
3044 nfs_restart_rpc(task
, NFS_SERVER(inode
)->nfs_client
);
3047 nfs_refresh_inode(inode
, data
->res
.fattr
);
3051 static void nfs4_proc_commit_setup(struct nfs_write_data
*data
, struct rpc_message
*msg
)
3053 struct nfs_server
*server
= NFS_SERVER(data
->inode
);
3055 data
->args
.bitmask
= server
->cache_consistency_bitmask
;
3056 data
->res
.server
= server
;
3057 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_COMMIT
];
3061 * nfs4_proc_async_renew(): This is not one of the nfs_rpc_ops; it is a special
3062 * standalone procedure for queueing an asynchronous RENEW.
3064 static void nfs4_renew_done(struct rpc_task
*task
, void *data
)
3066 struct nfs_client
*clp
= (struct nfs_client
*)task
->tk_msg
.rpc_argp
;
3067 unsigned long timestamp
= (unsigned long)data
;
3069 if (task
->tk_status
< 0) {
3070 /* Unless we're shutting down, schedule state recovery! */
3071 if (test_bit(NFS_CS_RENEWD
, &clp
->cl_res_state
) != 0)
3072 nfs4_schedule_state_recovery(clp
);
3075 spin_lock(&clp
->cl_lock
);
3076 if (time_before(clp
->cl_last_renewal
,timestamp
))
3077 clp
->cl_last_renewal
= timestamp
;
3078 spin_unlock(&clp
->cl_lock
);
3081 static const struct rpc_call_ops nfs4_renew_ops
= {
3082 .rpc_call_done
= nfs4_renew_done
,
3085 int nfs4_proc_async_renew(struct nfs_client
*clp
, struct rpc_cred
*cred
)
3087 struct rpc_message msg
= {
3088 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RENEW
],
3093 return rpc_call_async(clp
->cl_rpcclient
, &msg
, RPC_TASK_SOFT
,
3094 &nfs4_renew_ops
, (void *)jiffies
);
3097 int nfs4_proc_renew(struct nfs_client
*clp
, struct rpc_cred
*cred
)
3099 struct rpc_message msg
= {
3100 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RENEW
],
3104 unsigned long now
= jiffies
;
3107 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, 0);
3110 spin_lock(&clp
->cl_lock
);
3111 if (time_before(clp
->cl_last_renewal
,now
))
3112 clp
->cl_last_renewal
= now
;
3113 spin_unlock(&clp
->cl_lock
);
3117 static inline int nfs4_server_supports_acls(struct nfs_server
*server
)
3119 return (server
->caps
& NFS_CAP_ACLS
)
3120 && (server
->acl_bitmask
& ACL4_SUPPORT_ALLOW_ACL
)
3121 && (server
->acl_bitmask
& ACL4_SUPPORT_DENY_ACL
);
3124 /* Assuming that XATTR_SIZE_MAX is a multiple of PAGE_CACHE_SIZE, and that
3125 * it's OK to put sizeof(void) * (XATTR_SIZE_MAX/PAGE_CACHE_SIZE) bytes on
3128 #define NFS4ACL_MAXPAGES (XATTR_SIZE_MAX >> PAGE_CACHE_SHIFT)
3130 static void buf_to_pages(const void *buf
, size_t buflen
,
3131 struct page
**pages
, unsigned int *pgbase
)
3133 const void *p
= buf
;
3135 *pgbase
= offset_in_page(buf
);
3137 while (p
< buf
+ buflen
) {
3138 *(pages
++) = virt_to_page(p
);
3139 p
+= PAGE_CACHE_SIZE
;
3143 struct nfs4_cached_acl
{
3149 static void nfs4_set_cached_acl(struct inode
*inode
, struct nfs4_cached_acl
*acl
)
3151 struct nfs_inode
*nfsi
= NFS_I(inode
);
3153 spin_lock(&inode
->i_lock
);
3154 kfree(nfsi
->nfs4_acl
);
3155 nfsi
->nfs4_acl
= acl
;
3156 spin_unlock(&inode
->i_lock
);
3159 static void nfs4_zap_acl_attr(struct inode
*inode
)
3161 nfs4_set_cached_acl(inode
, NULL
);
3164 static inline ssize_t
nfs4_read_cached_acl(struct inode
*inode
, char *buf
, size_t buflen
)
3166 struct nfs_inode
*nfsi
= NFS_I(inode
);
3167 struct nfs4_cached_acl
*acl
;
3170 spin_lock(&inode
->i_lock
);
3171 acl
= nfsi
->nfs4_acl
;
3174 if (buf
== NULL
) /* user is just asking for length */
3176 if (acl
->cached
== 0)
3178 ret
= -ERANGE
; /* see getxattr(2) man page */
3179 if (acl
->len
> buflen
)
3181 memcpy(buf
, acl
->data
, acl
->len
);
3185 spin_unlock(&inode
->i_lock
);
3189 static void nfs4_write_cached_acl(struct inode
*inode
, const char *buf
, size_t acl_len
)
3191 struct nfs4_cached_acl
*acl
;
3193 if (buf
&& acl_len
<= PAGE_SIZE
) {
3194 acl
= kmalloc(sizeof(*acl
) + acl_len
, GFP_KERNEL
);
3198 memcpy(acl
->data
, buf
, acl_len
);
3200 acl
= kmalloc(sizeof(*acl
), GFP_KERNEL
);
3207 nfs4_set_cached_acl(inode
, acl
);
3210 static ssize_t
__nfs4_get_acl_uncached(struct inode
*inode
, void *buf
, size_t buflen
)
3212 struct page
*pages
[NFS4ACL_MAXPAGES
];
3213 struct nfs_getaclargs args
= {
3214 .fh
= NFS_FH(inode
),
3218 struct nfs_getaclres res
= {
3222 struct rpc_message msg
= {
3223 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GETACL
],
3227 struct page
*localpage
= NULL
;
3230 if (buflen
< PAGE_SIZE
) {
3231 /* As long as we're doing a round trip to the server anyway,
3232 * let's be prepared for a page of acl data. */
3233 localpage
= alloc_page(GFP_KERNEL
);
3234 resp_buf
= page_address(localpage
);
3235 if (localpage
== NULL
)
3237 args
.acl_pages
[0] = localpage
;
3238 args
.acl_pgbase
= 0;
3239 args
.acl_len
= PAGE_SIZE
;
3242 buf_to_pages(buf
, buflen
, args
.acl_pages
, &args
.acl_pgbase
);
3244 ret
= nfs4_call_sync(NFS_SERVER(inode
), &msg
, &args
, &res
, 0);
3247 if (res
.acl_len
> args
.acl_len
)
3248 nfs4_write_cached_acl(inode
, NULL
, res
.acl_len
);
3250 nfs4_write_cached_acl(inode
, resp_buf
, res
.acl_len
);
3253 if (res
.acl_len
> buflen
)
3256 memcpy(buf
, resp_buf
, res
.acl_len
);
3261 __free_page(localpage
);
3265 static ssize_t
nfs4_get_acl_uncached(struct inode
*inode
, void *buf
, size_t buflen
)
3267 struct nfs4_exception exception
= { };
3270 ret
= __nfs4_get_acl_uncached(inode
, buf
, buflen
);
3273 ret
= nfs4_handle_exception(NFS_SERVER(inode
), ret
, &exception
);
3274 } while (exception
.retry
);
3278 static ssize_t
nfs4_proc_get_acl(struct inode
*inode
, void *buf
, size_t buflen
)
3280 struct nfs_server
*server
= NFS_SERVER(inode
);
3283 if (!nfs4_server_supports_acls(server
))
3285 ret
= nfs_revalidate_inode(server
, inode
);
3288 ret
= nfs4_read_cached_acl(inode
, buf
, buflen
);
3291 return nfs4_get_acl_uncached(inode
, buf
, buflen
);
3294 static int __nfs4_proc_set_acl(struct inode
*inode
, const void *buf
, size_t buflen
)
3296 struct nfs_server
*server
= NFS_SERVER(inode
);
3297 struct page
*pages
[NFS4ACL_MAXPAGES
];
3298 struct nfs_setaclargs arg
= {
3299 .fh
= NFS_FH(inode
),
3303 struct nfs_setaclres res
;
3304 struct rpc_message msg
= {
3305 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETACL
],
3311 if (!nfs4_server_supports_acls(server
))
3313 nfs_inode_return_delegation(inode
);
3314 buf_to_pages(buf
, buflen
, arg
.acl_pages
, &arg
.acl_pgbase
);
3315 ret
= nfs4_call_sync(server
, &msg
, &arg
, &res
, 1);
3316 nfs_access_zap_cache(inode
);
3317 nfs_zap_acl_cache(inode
);
3321 static int nfs4_proc_set_acl(struct inode
*inode
, const void *buf
, size_t buflen
)
3323 struct nfs4_exception exception
= { };
3326 err
= nfs4_handle_exception(NFS_SERVER(inode
),
3327 __nfs4_proc_set_acl(inode
, buf
, buflen
),
3329 } while (exception
.retry
);
3334 _nfs4_async_handle_error(struct rpc_task
*task
, const struct nfs_server
*server
, struct nfs_client
*clp
, struct nfs4_state
*state
)
3336 if (!clp
|| task
->tk_status
>= 0)
3338 switch(task
->tk_status
) {
3339 case -NFS4ERR_ADMIN_REVOKED
:
3340 case -NFS4ERR_BAD_STATEID
:
3341 case -NFS4ERR_OPENMODE
:
3344 nfs4_state_mark_reclaim_nograce(clp
, state
);
3345 case -NFS4ERR_STALE_CLIENTID
:
3346 case -NFS4ERR_STALE_STATEID
:
3347 case -NFS4ERR_EXPIRED
:
3348 rpc_sleep_on(&clp
->cl_rpcwaitq
, task
, NULL
);
3349 nfs4_schedule_state_recovery(clp
);
3350 if (test_bit(NFS4CLNT_MANAGER_RUNNING
, &clp
->cl_state
) == 0)
3351 rpc_wake_up_queued_task(&clp
->cl_rpcwaitq
, task
);
3352 task
->tk_status
= 0;
3354 #if defined(CONFIG_NFS_V4_1)
3355 case -NFS4ERR_BADSESSION
:
3356 case -NFS4ERR_BADSLOT
:
3357 case -NFS4ERR_BAD_HIGH_SLOT
:
3358 case -NFS4ERR_DEADSESSION
:
3359 case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION
:
3360 case -NFS4ERR_SEQ_FALSE_RETRY
:
3361 case -NFS4ERR_SEQ_MISORDERED
:
3362 dprintk("%s ERROR %d, Reset session\n", __func__
,
3364 nfs4_schedule_state_recovery(clp
);
3365 task
->tk_status
= 0;
3367 #endif /* CONFIG_NFS_V4_1 */
3368 case -NFS4ERR_DELAY
:
3370 nfs_inc_server_stats(server
, NFSIOS_DELAY
);
3371 case -NFS4ERR_GRACE
:
3372 rpc_delay(task
, NFS4_POLL_RETRY_MAX
);
3373 task
->tk_status
= 0;
3375 case -NFS4ERR_OLD_STATEID
:
3376 task
->tk_status
= 0;
3379 task
->tk_status
= nfs4_map_errors(task
->tk_status
);
3384 nfs4_async_handle_error(struct rpc_task
*task
, const struct nfs_server
*server
, struct nfs4_state
*state
)
3386 return _nfs4_async_handle_error(task
, server
, server
->nfs_client
, state
);
3389 int nfs4_proc_setclientid(struct nfs_client
*clp
, u32 program
, unsigned short port
, struct rpc_cred
*cred
)
3391 nfs4_verifier sc_verifier
;
3392 struct nfs4_setclientid setclientid
= {
3393 .sc_verifier
= &sc_verifier
,
3396 struct rpc_message msg
= {
3397 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETCLIENTID
],
3398 .rpc_argp
= &setclientid
,
3406 p
= (__be32
*)sc_verifier
.data
;
3407 *p
++ = htonl((u32
)clp
->cl_boot_time
.tv_sec
);
3408 *p
= htonl((u32
)clp
->cl_boot_time
.tv_nsec
);
3411 setclientid
.sc_name_len
= scnprintf(setclientid
.sc_name
,
3412 sizeof(setclientid
.sc_name
), "%s/%s %s %s %u",
3414 rpc_peeraddr2str(clp
->cl_rpcclient
,
3416 rpc_peeraddr2str(clp
->cl_rpcclient
,
3418 clp
->cl_rpcclient
->cl_auth
->au_ops
->au_name
,
3419 clp
->cl_id_uniquifier
);
3420 setclientid
.sc_netid_len
= scnprintf(setclientid
.sc_netid
,
3421 sizeof(setclientid
.sc_netid
),
3422 rpc_peeraddr2str(clp
->cl_rpcclient
,
3423 RPC_DISPLAY_NETID
));
3424 setclientid
.sc_uaddr_len
= scnprintf(setclientid
.sc_uaddr
,
3425 sizeof(setclientid
.sc_uaddr
), "%s.%u.%u",
3426 clp
->cl_ipaddr
, port
>> 8, port
& 255);
3428 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, 0);
3429 if (status
!= -NFS4ERR_CLID_INUSE
)
3434 ssleep(clp
->cl_lease_time
+ 1);
3436 if (++clp
->cl_id_uniquifier
== 0)
3442 static int _nfs4_proc_setclientid_confirm(struct nfs_client
*clp
, struct rpc_cred
*cred
)
3444 struct nfs_fsinfo fsinfo
;
3445 struct rpc_message msg
= {
3446 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETCLIENTID_CONFIRM
],
3448 .rpc_resp
= &fsinfo
,
3455 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, 0);
3457 spin_lock(&clp
->cl_lock
);
3458 clp
->cl_lease_time
= fsinfo
.lease_time
* HZ
;
3459 clp
->cl_last_renewal
= now
;
3460 spin_unlock(&clp
->cl_lock
);
3465 int nfs4_proc_setclientid_confirm(struct nfs_client
*clp
, struct rpc_cred
*cred
)
3470 err
= _nfs4_proc_setclientid_confirm(clp
, cred
);
3474 case -NFS4ERR_RESOURCE
:
3475 /* The IBM lawyers misread another document! */
3476 case -NFS4ERR_DELAY
:
3477 err
= nfs4_delay(clp
->cl_rpcclient
, &timeout
);
3483 struct nfs4_delegreturndata
{
3484 struct nfs4_delegreturnargs args
;
3485 struct nfs4_delegreturnres res
;
3487 nfs4_stateid stateid
;
3488 unsigned long timestamp
;
3489 struct nfs_fattr fattr
;
3493 static void nfs4_delegreturn_done(struct rpc_task
*task
, void *calldata
)
3495 struct nfs4_delegreturndata
*data
= calldata
;
3497 nfs4_sequence_done(data
->res
.server
, &data
->res
.seq_res
,
3500 switch (task
->tk_status
) {
3501 case -NFS4ERR_STALE_STATEID
:
3502 case -NFS4ERR_EXPIRED
:
3504 renew_lease(data
->res
.server
, data
->timestamp
);
3507 if (nfs4_async_handle_error(task
, data
->res
.server
, NULL
) ==
3509 nfs_restart_rpc(task
, data
->res
.server
->nfs_client
);
3513 data
->rpc_status
= task
->tk_status
;
3516 static void nfs4_delegreturn_release(void *calldata
)
3521 #if defined(CONFIG_NFS_V4_1)
3522 static void nfs4_delegreturn_prepare(struct rpc_task
*task
, void *data
)
3524 struct nfs4_delegreturndata
*d_data
;
3526 d_data
= (struct nfs4_delegreturndata
*)data
;
3528 if (nfs4_setup_sequence(d_data
->res
.server
->nfs_client
,
3529 &d_data
->args
.seq_args
,
3530 &d_data
->res
.seq_res
, 1, task
))
3532 rpc_call_start(task
);
3534 #endif /* CONFIG_NFS_V4_1 */
3536 static const struct rpc_call_ops nfs4_delegreturn_ops
= {
3537 #if defined(CONFIG_NFS_V4_1)
3538 .rpc_call_prepare
= nfs4_delegreturn_prepare
,
3539 #endif /* CONFIG_NFS_V4_1 */
3540 .rpc_call_done
= nfs4_delegreturn_done
,
3541 .rpc_release
= nfs4_delegreturn_release
,
3544 static int _nfs4_proc_delegreturn(struct inode
*inode
, struct rpc_cred
*cred
, const nfs4_stateid
*stateid
, int issync
)
3546 struct nfs4_delegreturndata
*data
;
3547 struct nfs_server
*server
= NFS_SERVER(inode
);
3548 struct rpc_task
*task
;
3549 struct rpc_message msg
= {
3550 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_DELEGRETURN
],
3553 struct rpc_task_setup task_setup_data
= {
3554 .rpc_client
= server
->client
,
3555 .rpc_message
= &msg
,
3556 .callback_ops
= &nfs4_delegreturn_ops
,
3557 .flags
= RPC_TASK_ASYNC
,
3561 data
= kzalloc(sizeof(*data
), GFP_KERNEL
);
3564 data
->args
.fhandle
= &data
->fh
;
3565 data
->args
.stateid
= &data
->stateid
;
3566 data
->args
.bitmask
= server
->attr_bitmask
;
3567 nfs_copy_fh(&data
->fh
, NFS_FH(inode
));
3568 memcpy(&data
->stateid
, stateid
, sizeof(data
->stateid
));
3569 data
->res
.fattr
= &data
->fattr
;
3570 data
->res
.server
= server
;
3571 data
->res
.seq_res
.sr_slotid
= NFS4_MAX_SLOT_TABLE
;
3572 nfs_fattr_init(data
->res
.fattr
);
3573 data
->timestamp
= jiffies
;
3574 data
->rpc_status
= 0;
3576 task_setup_data
.callback_data
= data
;
3577 msg
.rpc_argp
= &data
->args
,
3578 msg
.rpc_resp
= &data
->res
,
3579 task
= rpc_run_task(&task_setup_data
);
3581 return PTR_ERR(task
);
3584 status
= nfs4_wait_for_completion_rpc_task(task
);
3587 status
= data
->rpc_status
;
3590 nfs_refresh_inode(inode
, &data
->fattr
);
3596 int nfs4_proc_delegreturn(struct inode
*inode
, struct rpc_cred
*cred
, const nfs4_stateid
*stateid
, int issync
)
3598 struct nfs_server
*server
= NFS_SERVER(inode
);
3599 struct nfs4_exception exception
= { };
3602 err
= _nfs4_proc_delegreturn(inode
, cred
, stateid
, issync
);
3604 case -NFS4ERR_STALE_STATEID
:
3605 case -NFS4ERR_EXPIRED
:
3609 err
= nfs4_handle_exception(server
, err
, &exception
);
3610 } while (exception
.retry
);
3614 #define NFS4_LOCK_MINTIMEOUT (1 * HZ)
3615 #define NFS4_LOCK_MAXTIMEOUT (30 * HZ)
3618 * sleep, with exponential backoff, and retry the LOCK operation.
3620 static unsigned long
3621 nfs4_set_lock_task_retry(unsigned long timeout
)
3623 schedule_timeout_killable(timeout
);
3625 if (timeout
> NFS4_LOCK_MAXTIMEOUT
)
3626 return NFS4_LOCK_MAXTIMEOUT
;
3630 static int _nfs4_proc_getlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
3632 struct inode
*inode
= state
->inode
;
3633 struct nfs_server
*server
= NFS_SERVER(inode
);
3634 struct nfs_client
*clp
= server
->nfs_client
;
3635 struct nfs_lockt_args arg
= {
3636 .fh
= NFS_FH(inode
),
3639 struct nfs_lockt_res res
= {
3642 struct rpc_message msg
= {
3643 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOCKT
],
3646 .rpc_cred
= state
->owner
->so_cred
,
3648 struct nfs4_lock_state
*lsp
;
3651 arg
.lock_owner
.clientid
= clp
->cl_clientid
;
3652 status
= nfs4_set_lock_state(state
, request
);
3655 lsp
= request
->fl_u
.nfs4_fl
.owner
;
3656 arg
.lock_owner
.id
= lsp
->ls_id
.id
;
3657 status
= nfs4_call_sync(server
, &msg
, &arg
, &res
, 1);
3660 request
->fl_type
= F_UNLCK
;
3662 case -NFS4ERR_DENIED
:
3665 request
->fl_ops
->fl_release_private(request
);
3670 static int nfs4_proc_getlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
3672 struct nfs4_exception exception
= { };
3676 err
= nfs4_handle_exception(NFS_SERVER(state
->inode
),
3677 _nfs4_proc_getlk(state
, cmd
, request
),
3679 } while (exception
.retry
);
3683 static int do_vfs_lock(struct file
*file
, struct file_lock
*fl
)
3686 switch (fl
->fl_flags
& (FL_POSIX
|FL_FLOCK
)) {
3688 res
= posix_lock_file_wait(file
, fl
);
3691 res
= flock_lock_file_wait(file
, fl
);
3699 struct nfs4_unlockdata
{
3700 struct nfs_locku_args arg
;
3701 struct nfs_locku_res res
;
3702 struct nfs4_lock_state
*lsp
;
3703 struct nfs_open_context
*ctx
;
3704 struct file_lock fl
;
3705 const struct nfs_server
*server
;
3706 unsigned long timestamp
;
3709 static struct nfs4_unlockdata
*nfs4_alloc_unlockdata(struct file_lock
*fl
,
3710 struct nfs_open_context
*ctx
,
3711 struct nfs4_lock_state
*lsp
,
3712 struct nfs_seqid
*seqid
)
3714 struct nfs4_unlockdata
*p
;
3715 struct inode
*inode
= lsp
->ls_state
->inode
;
3717 p
= kzalloc(sizeof(*p
), GFP_KERNEL
);
3720 p
->arg
.fh
= NFS_FH(inode
);
3722 p
->arg
.seqid
= seqid
;
3723 p
->res
.seqid
= seqid
;
3724 p
->res
.seq_res
.sr_slotid
= NFS4_MAX_SLOT_TABLE
;
3725 p
->arg
.stateid
= &lsp
->ls_stateid
;
3727 atomic_inc(&lsp
->ls_count
);
3728 /* Ensure we don't close file until we're done freeing locks! */
3729 p
->ctx
= get_nfs_open_context(ctx
);
3730 memcpy(&p
->fl
, fl
, sizeof(p
->fl
));
3731 p
->server
= NFS_SERVER(inode
);
3735 static void nfs4_locku_release_calldata(void *data
)
3737 struct nfs4_unlockdata
*calldata
= data
;
3738 nfs_free_seqid(calldata
->arg
.seqid
);
3739 nfs4_put_lock_state(calldata
->lsp
);
3740 put_nfs_open_context(calldata
->ctx
);
3744 static void nfs4_locku_done(struct rpc_task
*task
, void *data
)
3746 struct nfs4_unlockdata
*calldata
= data
;
3748 nfs4_sequence_done(calldata
->server
, &calldata
->res
.seq_res
,
3750 if (RPC_ASSASSINATED(task
))
3752 switch (task
->tk_status
) {
3754 memcpy(calldata
->lsp
->ls_stateid
.data
,
3755 calldata
->res
.stateid
.data
,
3756 sizeof(calldata
->lsp
->ls_stateid
.data
));
3757 renew_lease(calldata
->server
, calldata
->timestamp
);
3759 case -NFS4ERR_BAD_STATEID
:
3760 case -NFS4ERR_OLD_STATEID
:
3761 case -NFS4ERR_STALE_STATEID
:
3762 case -NFS4ERR_EXPIRED
:
3765 if (nfs4_async_handle_error(task
, calldata
->server
, NULL
) == -EAGAIN
)
3766 nfs_restart_rpc(task
,
3767 calldata
->server
->nfs_client
);
3771 static void nfs4_locku_prepare(struct rpc_task
*task
, void *data
)
3773 struct nfs4_unlockdata
*calldata
= data
;
3775 if (nfs_wait_on_sequence(calldata
->arg
.seqid
, task
) != 0)
3777 if ((calldata
->lsp
->ls_flags
& NFS_LOCK_INITIALIZED
) == 0) {
3778 /* Note: exit _without_ running nfs4_locku_done */
3779 task
->tk_action
= NULL
;
3782 calldata
->timestamp
= jiffies
;
3783 if (nfs4_setup_sequence(calldata
->server
->nfs_client
,
3784 &calldata
->arg
.seq_args
,
3785 &calldata
->res
.seq_res
, 1, task
))
3787 rpc_call_start(task
);
3790 static const struct rpc_call_ops nfs4_locku_ops
= {
3791 .rpc_call_prepare
= nfs4_locku_prepare
,
3792 .rpc_call_done
= nfs4_locku_done
,
3793 .rpc_release
= nfs4_locku_release_calldata
,
3796 static struct rpc_task
*nfs4_do_unlck(struct file_lock
*fl
,
3797 struct nfs_open_context
*ctx
,
3798 struct nfs4_lock_state
*lsp
,
3799 struct nfs_seqid
*seqid
)
3801 struct nfs4_unlockdata
*data
;
3802 struct rpc_message msg
= {
3803 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOCKU
],
3804 .rpc_cred
= ctx
->cred
,
3806 struct rpc_task_setup task_setup_data
= {
3807 .rpc_client
= NFS_CLIENT(lsp
->ls_state
->inode
),
3808 .rpc_message
= &msg
,
3809 .callback_ops
= &nfs4_locku_ops
,
3810 .workqueue
= nfsiod_workqueue
,
3811 .flags
= RPC_TASK_ASYNC
,
3814 /* Ensure this is an unlock - when canceling a lock, the
3815 * canceled lock is passed in, and it won't be an unlock.
3817 fl
->fl_type
= F_UNLCK
;
3819 data
= nfs4_alloc_unlockdata(fl
, ctx
, lsp
, seqid
);
3821 nfs_free_seqid(seqid
);
3822 return ERR_PTR(-ENOMEM
);
3825 msg
.rpc_argp
= &data
->arg
,
3826 msg
.rpc_resp
= &data
->res
,
3827 task_setup_data
.callback_data
= data
;
3828 return rpc_run_task(&task_setup_data
);
3831 static int nfs4_proc_unlck(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
3833 struct nfs_inode
*nfsi
= NFS_I(state
->inode
);
3834 struct nfs_seqid
*seqid
;
3835 struct nfs4_lock_state
*lsp
;
3836 struct rpc_task
*task
;
3838 unsigned char fl_flags
= request
->fl_flags
;
3840 status
= nfs4_set_lock_state(state
, request
);
3841 /* Unlock _before_ we do the RPC call */
3842 request
->fl_flags
|= FL_EXISTS
;
3843 down_read(&nfsi
->rwsem
);
3844 if (do_vfs_lock(request
->fl_file
, request
) == -ENOENT
) {
3845 up_read(&nfsi
->rwsem
);
3848 up_read(&nfsi
->rwsem
);
3851 /* Is this a delegated lock? */
3852 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
))
3854 lsp
= request
->fl_u
.nfs4_fl
.owner
;
3855 seqid
= nfs_alloc_seqid(&lsp
->ls_seqid
);
3859 task
= nfs4_do_unlck(request
, nfs_file_open_context(request
->fl_file
), lsp
, seqid
);
3860 status
= PTR_ERR(task
);
3863 status
= nfs4_wait_for_completion_rpc_task(task
);
3866 request
->fl_flags
= fl_flags
;
3870 struct nfs4_lockdata
{
3871 struct nfs_lock_args arg
;
3872 struct nfs_lock_res res
;
3873 struct nfs4_lock_state
*lsp
;
3874 struct nfs_open_context
*ctx
;
3875 struct file_lock fl
;
3876 unsigned long timestamp
;
3879 struct nfs_server
*server
;
3882 static struct nfs4_lockdata
*nfs4_alloc_lockdata(struct file_lock
*fl
,
3883 struct nfs_open_context
*ctx
, struct nfs4_lock_state
*lsp
)
3885 struct nfs4_lockdata
*p
;
3886 struct inode
*inode
= lsp
->ls_state
->inode
;
3887 struct nfs_server
*server
= NFS_SERVER(inode
);
3889 p
= kzalloc(sizeof(*p
), GFP_KERNEL
);
3893 p
->arg
.fh
= NFS_FH(inode
);
3895 p
->arg
.open_seqid
= nfs_alloc_seqid(&lsp
->ls_state
->owner
->so_seqid
);
3896 if (p
->arg
.open_seqid
== NULL
)
3898 p
->arg
.lock_seqid
= nfs_alloc_seqid(&lsp
->ls_seqid
);
3899 if (p
->arg
.lock_seqid
== NULL
)
3900 goto out_free_seqid
;
3901 p
->arg
.lock_stateid
= &lsp
->ls_stateid
;
3902 p
->arg
.lock_owner
.clientid
= server
->nfs_client
->cl_clientid
;
3903 p
->arg
.lock_owner
.id
= lsp
->ls_id
.id
;
3904 p
->res
.lock_seqid
= p
->arg
.lock_seqid
;
3905 p
->res
.seq_res
.sr_slotid
= NFS4_MAX_SLOT_TABLE
;
3908 atomic_inc(&lsp
->ls_count
);
3909 p
->ctx
= get_nfs_open_context(ctx
);
3910 memcpy(&p
->fl
, fl
, sizeof(p
->fl
));
3913 nfs_free_seqid(p
->arg
.open_seqid
);
3919 static void nfs4_lock_prepare(struct rpc_task
*task
, void *calldata
)
3921 struct nfs4_lockdata
*data
= calldata
;
3922 struct nfs4_state
*state
= data
->lsp
->ls_state
;
3924 dprintk("%s: begin!\n", __func__
);
3925 if (nfs_wait_on_sequence(data
->arg
.lock_seqid
, task
) != 0)
3927 /* Do we need to do an open_to_lock_owner? */
3928 if (!(data
->arg
.lock_seqid
->sequence
->flags
& NFS_SEQID_CONFIRMED
)) {
3929 if (nfs_wait_on_sequence(data
->arg
.open_seqid
, task
) != 0)
3931 data
->arg
.open_stateid
= &state
->stateid
;
3932 data
->arg
.new_lock_owner
= 1;
3933 data
->res
.open_seqid
= data
->arg
.open_seqid
;
3935 data
->arg
.new_lock_owner
= 0;
3936 data
->timestamp
= jiffies
;
3937 if (nfs4_setup_sequence(data
->server
->nfs_client
, &data
->arg
.seq_args
,
3938 &data
->res
.seq_res
, 1, task
))
3940 rpc_call_start(task
);
3941 dprintk("%s: done!, ret = %d\n", __func__
, data
->rpc_status
);
3944 static void nfs4_lock_done(struct rpc_task
*task
, void *calldata
)
3946 struct nfs4_lockdata
*data
= calldata
;
3948 dprintk("%s: begin!\n", __func__
);
3950 nfs4_sequence_done(data
->server
, &data
->res
.seq_res
,
3953 data
->rpc_status
= task
->tk_status
;
3954 if (RPC_ASSASSINATED(task
))
3956 if (data
->arg
.new_lock_owner
!= 0) {
3957 if (data
->rpc_status
== 0)
3958 nfs_confirm_seqid(&data
->lsp
->ls_seqid
, 0);
3962 if (data
->rpc_status
== 0) {
3963 memcpy(data
->lsp
->ls_stateid
.data
, data
->res
.stateid
.data
,
3964 sizeof(data
->lsp
->ls_stateid
.data
));
3965 data
->lsp
->ls_flags
|= NFS_LOCK_INITIALIZED
;
3966 renew_lease(NFS_SERVER(data
->ctx
->path
.dentry
->d_inode
), data
->timestamp
);
3969 dprintk("%s: done, ret = %d!\n", __func__
, data
->rpc_status
);
3972 static void nfs4_lock_release(void *calldata
)
3974 struct nfs4_lockdata
*data
= calldata
;
3976 dprintk("%s: begin!\n", __func__
);
3977 nfs_free_seqid(data
->arg
.open_seqid
);
3978 if (data
->cancelled
!= 0) {
3979 struct rpc_task
*task
;
3980 task
= nfs4_do_unlck(&data
->fl
, data
->ctx
, data
->lsp
,
3981 data
->arg
.lock_seqid
);
3984 dprintk("%s: cancelling lock!\n", __func__
);
3986 nfs_free_seqid(data
->arg
.lock_seqid
);
3987 nfs4_put_lock_state(data
->lsp
);
3988 put_nfs_open_context(data
->ctx
);
3990 dprintk("%s: done!\n", __func__
);
3993 static const struct rpc_call_ops nfs4_lock_ops
= {
3994 .rpc_call_prepare
= nfs4_lock_prepare
,
3995 .rpc_call_done
= nfs4_lock_done
,
3996 .rpc_release
= nfs4_lock_release
,
3999 static int _nfs4_do_setlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*fl
, int reclaim
)
4001 struct nfs4_lockdata
*data
;
4002 struct rpc_task
*task
;
4003 struct rpc_message msg
= {
4004 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOCK
],
4005 .rpc_cred
= state
->owner
->so_cred
,
4007 struct rpc_task_setup task_setup_data
= {
4008 .rpc_client
= NFS_CLIENT(state
->inode
),
4009 .rpc_message
= &msg
,
4010 .callback_ops
= &nfs4_lock_ops
,
4011 .workqueue
= nfsiod_workqueue
,
4012 .flags
= RPC_TASK_ASYNC
,
4016 dprintk("%s: begin!\n", __func__
);
4017 data
= nfs4_alloc_lockdata(fl
, nfs_file_open_context(fl
->fl_file
),
4018 fl
->fl_u
.nfs4_fl
.owner
);
4022 data
->arg
.block
= 1;
4024 data
->arg
.reclaim
= 1;
4025 msg
.rpc_argp
= &data
->arg
,
4026 msg
.rpc_resp
= &data
->res
,
4027 task_setup_data
.callback_data
= data
;
4028 task
= rpc_run_task(&task_setup_data
);
4030 return PTR_ERR(task
);
4031 ret
= nfs4_wait_for_completion_rpc_task(task
);
4033 ret
= data
->rpc_status
;
4035 data
->cancelled
= 1;
4037 dprintk("%s: done, ret = %d!\n", __func__
, ret
);
4041 static int nfs4_lock_reclaim(struct nfs4_state
*state
, struct file_lock
*request
)
4043 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
4044 struct nfs4_exception exception
= { };
4048 /* Cache the lock if possible... */
4049 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) != 0)
4051 err
= _nfs4_do_setlk(state
, F_SETLK
, request
, 1);
4052 if (err
!= -NFS4ERR_DELAY
)
4054 nfs4_handle_exception(server
, err
, &exception
);
4055 } while (exception
.retry
);
4059 static int nfs4_lock_expired(struct nfs4_state
*state
, struct file_lock
*request
)
4061 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
4062 struct nfs4_exception exception
= { };
4065 err
= nfs4_set_lock_state(state
, request
);
4069 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) != 0)
4071 err
= _nfs4_do_setlk(state
, F_SETLK
, request
, 0);
4075 case -NFS4ERR_GRACE
:
4076 case -NFS4ERR_DELAY
:
4077 nfs4_handle_exception(server
, err
, &exception
);
4080 } while (exception
.retry
);
4085 static int _nfs4_proc_setlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
4087 struct nfs_inode
*nfsi
= NFS_I(state
->inode
);
4088 unsigned char fl_flags
= request
->fl_flags
;
4091 /* Is this a delegated open? */
4092 status
= nfs4_set_lock_state(state
, request
);
4095 request
->fl_flags
|= FL_ACCESS
;
4096 status
= do_vfs_lock(request
->fl_file
, request
);
4099 down_read(&nfsi
->rwsem
);
4100 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
)) {
4101 /* Yes: cache locks! */
4102 /* ...but avoid races with delegation recall... */
4103 request
->fl_flags
= fl_flags
& ~FL_SLEEP
;
4104 status
= do_vfs_lock(request
->fl_file
, request
);
4107 status
= _nfs4_do_setlk(state
, cmd
, request
, 0);
4110 /* Note: we always want to sleep here! */
4111 request
->fl_flags
= fl_flags
| FL_SLEEP
;
4112 if (do_vfs_lock(request
->fl_file
, request
) < 0)
4113 printk(KERN_WARNING
"%s: VFS is out of sync with lock manager!\n", __func__
);
4115 up_read(&nfsi
->rwsem
);
4117 request
->fl_flags
= fl_flags
;
4121 static int nfs4_proc_setlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
4123 struct nfs4_exception exception
= { };
4127 err
= _nfs4_proc_setlk(state
, cmd
, request
);
4128 if (err
== -NFS4ERR_DENIED
)
4130 err
= nfs4_handle_exception(NFS_SERVER(state
->inode
),
4132 } while (exception
.retry
);
4137 nfs4_proc_lock(struct file
*filp
, int cmd
, struct file_lock
*request
)
4139 struct nfs_open_context
*ctx
;
4140 struct nfs4_state
*state
;
4141 unsigned long timeout
= NFS4_LOCK_MINTIMEOUT
;
4144 /* verify open state */
4145 ctx
= nfs_file_open_context(filp
);
4148 if (request
->fl_start
< 0 || request
->fl_end
< 0)
4151 if (IS_GETLK(cmd
)) {
4153 return nfs4_proc_getlk(state
, F_GETLK
, request
);
4157 if (!(IS_SETLK(cmd
) || IS_SETLKW(cmd
)))
4160 if (request
->fl_type
== F_UNLCK
) {
4162 return nfs4_proc_unlck(state
, cmd
, request
);
4169 status
= nfs4_proc_setlk(state
, cmd
, request
);
4170 if ((status
!= -EAGAIN
) || IS_SETLK(cmd
))
4172 timeout
= nfs4_set_lock_task_retry(timeout
);
4173 status
= -ERESTARTSYS
;
4176 } while(status
< 0);
4180 int nfs4_lock_delegation_recall(struct nfs4_state
*state
, struct file_lock
*fl
)
4182 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
4183 struct nfs4_exception exception
= { };
4186 err
= nfs4_set_lock_state(state
, fl
);
4190 err
= _nfs4_do_setlk(state
, F_SETLK
, fl
, 0);
4193 printk(KERN_ERR
"%s: unhandled error %d.\n",
4198 case -NFS4ERR_EXPIRED
:
4199 case -NFS4ERR_STALE_CLIENTID
:
4200 case -NFS4ERR_STALE_STATEID
:
4201 case -NFS4ERR_BADSESSION
:
4202 case -NFS4ERR_BADSLOT
:
4203 case -NFS4ERR_BAD_HIGH_SLOT
:
4204 case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION
:
4205 case -NFS4ERR_DEADSESSION
:
4206 nfs4_schedule_state_recovery(server
->nfs_client
);
4210 * The show must go on: exit, but mark the
4211 * stateid as needing recovery.
4213 case -NFS4ERR_ADMIN_REVOKED
:
4214 case -NFS4ERR_BAD_STATEID
:
4215 case -NFS4ERR_OPENMODE
:
4216 nfs4_state_mark_reclaim_nograce(server
->nfs_client
, state
);
4220 case -NFS4ERR_DENIED
:
4221 /* kill_proc(fl->fl_pid, SIGLOST, 1); */
4224 case -NFS4ERR_DELAY
:
4227 err
= nfs4_handle_exception(server
, err
, &exception
);
4228 } while (exception
.retry
);
4233 #define XATTR_NAME_NFSV4_ACL "system.nfs4_acl"
4235 int nfs4_setxattr(struct dentry
*dentry
, const char *key
, const void *buf
,
4236 size_t buflen
, int flags
)
4238 struct inode
*inode
= dentry
->d_inode
;
4240 if (strcmp(key
, XATTR_NAME_NFSV4_ACL
) != 0)
4243 return nfs4_proc_set_acl(inode
, buf
, buflen
);
4246 /* The getxattr man page suggests returning -ENODATA for unknown attributes,
4247 * and that's what we'll do for e.g. user attributes that haven't been set.
4248 * But we'll follow ext2/ext3's lead by returning -EOPNOTSUPP for unsupported
4249 * attributes in kernel-managed attribute namespaces. */
4250 ssize_t
nfs4_getxattr(struct dentry
*dentry
, const char *key
, void *buf
,
4253 struct inode
*inode
= dentry
->d_inode
;
4255 if (strcmp(key
, XATTR_NAME_NFSV4_ACL
) != 0)
4258 return nfs4_proc_get_acl(inode
, buf
, buflen
);
4261 ssize_t
nfs4_listxattr(struct dentry
*dentry
, char *buf
, size_t buflen
)
4263 size_t len
= strlen(XATTR_NAME_NFSV4_ACL
) + 1;
4265 if (!nfs4_server_supports_acls(NFS_SERVER(dentry
->d_inode
)))
4267 if (buf
&& buflen
< len
)
4270 memcpy(buf
, XATTR_NAME_NFSV4_ACL
, len
);
4274 static void nfs_fixup_referral_attributes(struct nfs_fattr
*fattr
)
4276 if (!((fattr
->valid
& NFS_ATTR_FATTR_FILEID
) &&
4277 (fattr
->valid
& NFS_ATTR_FATTR_FSID
) &&
4278 (fattr
->valid
& NFS_ATTR_FATTR_V4_REFERRAL
)))
4281 fattr
->valid
|= NFS_ATTR_FATTR_TYPE
| NFS_ATTR_FATTR_MODE
|
4282 NFS_ATTR_FATTR_NLINK
;
4283 fattr
->mode
= S_IFDIR
| S_IRUGO
| S_IXUGO
;
4287 int nfs4_proc_fs_locations(struct inode
*dir
, const struct qstr
*name
,
4288 struct nfs4_fs_locations
*fs_locations
, struct page
*page
)
4290 struct nfs_server
*server
= NFS_SERVER(dir
);
4292 [0] = FATTR4_WORD0_FSID
| FATTR4_WORD0_FS_LOCATIONS
,
4293 [1] = FATTR4_WORD1_MOUNTED_ON_FILEID
,
4295 struct nfs4_fs_locations_arg args
= {
4296 .dir_fh
= NFS_FH(dir
),
4301 struct nfs4_fs_locations_res res
= {
4302 .fs_locations
= fs_locations
,
4304 struct rpc_message msg
= {
4305 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_FS_LOCATIONS
],
4311 dprintk("%s: start\n", __func__
);
4312 nfs_fattr_init(&fs_locations
->fattr
);
4313 fs_locations
->server
= server
;
4314 fs_locations
->nlocations
= 0;
4315 status
= nfs4_call_sync(server
, &msg
, &args
, &res
, 0);
4316 nfs_fixup_referral_attributes(&fs_locations
->fattr
);
4317 dprintk("%s: returned status = %d\n", __func__
, status
);
4321 #ifdef CONFIG_NFS_V4_1
4323 * nfs4_proc_exchange_id()
4325 * Since the clientid has expired, all compounds using sessions
4326 * associated with the stale clientid will be returning
4327 * NFS4ERR_BADSESSION in the sequence operation, and will therefore
4328 * be in some phase of session reset.
4330 int nfs4_proc_exchange_id(struct nfs_client
*clp
, struct rpc_cred
*cred
)
4332 nfs4_verifier verifier
;
4333 struct nfs41_exchange_id_args args
= {
4335 .flags
= clp
->cl_exchange_flags
,
4337 struct nfs41_exchange_id_res res
= {
4341 struct rpc_message msg
= {
4342 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_EXCHANGE_ID
],
4349 dprintk("--> %s\n", __func__
);
4350 BUG_ON(clp
== NULL
);
4352 /* Remove server-only flags */
4353 args
.flags
&= ~EXCHGID4_FLAG_CONFIRMED_R
;
4355 p
= (u32
*)verifier
.data
;
4356 *p
++ = htonl((u32
)clp
->cl_boot_time
.tv_sec
);
4357 *p
= htonl((u32
)clp
->cl_boot_time
.tv_nsec
);
4358 args
.verifier
= &verifier
;
4361 args
.id_len
= scnprintf(args
.id
, sizeof(args
.id
),
4364 rpc_peeraddr2str(clp
->cl_rpcclient
,
4366 clp
->cl_id_uniquifier
);
4368 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, 0);
4370 if (status
!= NFS4ERR_CLID_INUSE
)
4376 if (++clp
->cl_id_uniquifier
== 0)
4380 dprintk("<-- %s status= %d\n", __func__
, status
);
4384 struct nfs4_get_lease_time_data
{
4385 struct nfs4_get_lease_time_args
*args
;
4386 struct nfs4_get_lease_time_res
*res
;
4387 struct nfs_client
*clp
;
4390 static void nfs4_get_lease_time_prepare(struct rpc_task
*task
,
4394 struct nfs4_get_lease_time_data
*data
=
4395 (struct nfs4_get_lease_time_data
*)calldata
;
4397 dprintk("--> %s\n", __func__
);
4398 /* just setup sequence, do not trigger session recovery
4399 since we're invoked within one */
4400 ret
= nfs41_setup_sequence(data
->clp
->cl_session
,
4401 &data
->args
->la_seq_args
,
4402 &data
->res
->lr_seq_res
, 0, task
);
4404 BUG_ON(ret
== -EAGAIN
);
4405 rpc_call_start(task
);
4406 dprintk("<-- %s\n", __func__
);
4410 * Called from nfs4_state_manager thread for session setup, so don't recover
4411 * from sequence operation or clientid errors.
4413 static void nfs4_get_lease_time_done(struct rpc_task
*task
, void *calldata
)
4415 struct nfs4_get_lease_time_data
*data
=
4416 (struct nfs4_get_lease_time_data
*)calldata
;
4418 dprintk("--> %s\n", __func__
);
4419 nfs41_sequence_done(data
->clp
, &data
->res
->lr_seq_res
, task
->tk_status
);
4420 switch (task
->tk_status
) {
4421 case -NFS4ERR_DELAY
:
4422 case -NFS4ERR_GRACE
:
4423 dprintk("%s Retry: tk_status %d\n", __func__
, task
->tk_status
);
4424 rpc_delay(task
, NFS4_POLL_RETRY_MIN
);
4425 task
->tk_status
= 0;
4426 nfs_restart_rpc(task
, data
->clp
);
4429 dprintk("<-- %s\n", __func__
);
4432 struct rpc_call_ops nfs4_get_lease_time_ops
= {
4433 .rpc_call_prepare
= nfs4_get_lease_time_prepare
,
4434 .rpc_call_done
= nfs4_get_lease_time_done
,
4437 int nfs4_proc_get_lease_time(struct nfs_client
*clp
, struct nfs_fsinfo
*fsinfo
)
4439 struct rpc_task
*task
;
4440 struct nfs4_get_lease_time_args args
;
4441 struct nfs4_get_lease_time_res res
= {
4442 .lr_fsinfo
= fsinfo
,
4444 struct nfs4_get_lease_time_data data
= {
4449 struct rpc_message msg
= {
4450 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GET_LEASE_TIME
],
4454 struct rpc_task_setup task_setup
= {
4455 .rpc_client
= clp
->cl_rpcclient
,
4456 .rpc_message
= &msg
,
4457 .callback_ops
= &nfs4_get_lease_time_ops
,
4458 .callback_data
= &data
4462 res
.lr_seq_res
.sr_slotid
= NFS4_MAX_SLOT_TABLE
;
4463 dprintk("--> %s\n", __func__
);
4464 task
= rpc_run_task(&task_setup
);
4467 status
= PTR_ERR(task
);
4469 status
= task
->tk_status
;
4472 dprintk("<-- %s return %d\n", __func__
, status
);
4478 * Reset a slot table
4480 static int nfs4_reset_slot_table(struct nfs4_slot_table
*tbl
, int max_slots
,
4481 int old_max_slots
, int ivalue
)
4486 dprintk("--> %s: max_reqs=%u, tbl %p\n", __func__
, max_slots
, tbl
);
4489 * Until we have dynamic slot table adjustment, insist
4490 * upon the same slot table size
4492 if (max_slots
!= old_max_slots
) {
4493 dprintk("%s reset slot table does't match old\n",
4495 ret
= -EINVAL
; /*XXX NFS4ERR_REQ_TOO_BIG ? */
4498 spin_lock(&tbl
->slot_tbl_lock
);
4499 for (i
= 0; i
< max_slots
; ++i
)
4500 tbl
->slots
[i
].seq_nr
= ivalue
;
4501 spin_unlock(&tbl
->slot_tbl_lock
);
4502 dprintk("%s: tbl=%p slots=%p max_slots=%d\n", __func__
,
4503 tbl
, tbl
->slots
, tbl
->max_slots
);
4505 dprintk("<-- %s: return %d\n", __func__
, ret
);
4510 * Reset the forechannel and backchannel slot tables
4512 static int nfs4_reset_slot_tables(struct nfs4_session
*session
)
4516 status
= nfs4_reset_slot_table(&session
->fc_slot_table
,
4517 session
->fc_attrs
.max_reqs
,
4518 session
->fc_slot_table
.max_slots
,
4523 status
= nfs4_reset_slot_table(&session
->bc_slot_table
,
4524 session
->bc_attrs
.max_reqs
,
4525 session
->bc_slot_table
.max_slots
,
4530 /* Destroy the slot table */
4531 static void nfs4_destroy_slot_tables(struct nfs4_session
*session
)
4533 if (session
->fc_slot_table
.slots
!= NULL
) {
4534 kfree(session
->fc_slot_table
.slots
);
4535 session
->fc_slot_table
.slots
= NULL
;
4537 if (session
->bc_slot_table
.slots
!= NULL
) {
4538 kfree(session
->bc_slot_table
.slots
);
4539 session
->bc_slot_table
.slots
= NULL
;
4545 * Initialize slot table
4547 static int nfs4_init_slot_table(struct nfs4_slot_table
*tbl
,
4548 int max_slots
, int ivalue
)
4550 struct nfs4_slot
*slot
;
4553 BUG_ON(max_slots
> NFS4_MAX_SLOT_TABLE
);
4555 dprintk("--> %s: max_reqs=%u\n", __func__
, max_slots
);
4557 slot
= kcalloc(max_slots
, sizeof(struct nfs4_slot
), GFP_KERNEL
);
4562 spin_lock(&tbl
->slot_tbl_lock
);
4563 tbl
->max_slots
= max_slots
;
4565 tbl
->highest_used_slotid
= -1; /* no slot is currently used */
4566 spin_unlock(&tbl
->slot_tbl_lock
);
4567 dprintk("%s: tbl=%p slots=%p max_slots=%d\n", __func__
,
4568 tbl
, tbl
->slots
, tbl
->max_slots
);
4570 dprintk("<-- %s: return %d\n", __func__
, ret
);
4575 * Initialize the forechannel and backchannel tables
4577 static int nfs4_init_slot_tables(struct nfs4_session
*session
)
4579 struct nfs4_slot_table
*tbl
;
4582 tbl
= &session
->fc_slot_table
;
4583 if (tbl
->slots
== NULL
) {
4584 status
= nfs4_init_slot_table(tbl
,
4585 session
->fc_attrs
.max_reqs
, 1);
4590 tbl
= &session
->bc_slot_table
;
4591 if (tbl
->slots
== NULL
) {
4592 status
= nfs4_init_slot_table(tbl
,
4593 session
->bc_attrs
.max_reqs
, 0);
4595 nfs4_destroy_slot_tables(session
);
4601 struct nfs4_session
*nfs4_alloc_session(struct nfs_client
*clp
)
4603 struct nfs4_session
*session
;
4604 struct nfs4_slot_table
*tbl
;
4606 session
= kzalloc(sizeof(struct nfs4_session
), GFP_KERNEL
);
4611 * The create session reply races with the server back
4612 * channel probe. Mark the client NFS_CS_SESSION_INITING
4613 * so that the client back channel can find the
4616 clp
->cl_cons_state
= NFS_CS_SESSION_INITING
;
4617 init_completion(&session
->complete
);
4619 tbl
= &session
->fc_slot_table
;
4620 tbl
->highest_used_slotid
= -1;
4621 spin_lock_init(&tbl
->slot_tbl_lock
);
4622 rpc_init_wait_queue(&tbl
->slot_tbl_waitq
, "ForeChannel Slot table");
4624 tbl
= &session
->bc_slot_table
;
4625 tbl
->highest_used_slotid
= -1;
4626 spin_lock_init(&tbl
->slot_tbl_lock
);
4627 rpc_init_wait_queue(&tbl
->slot_tbl_waitq
, "BackChannel Slot table");
4633 void nfs4_destroy_session(struct nfs4_session
*session
)
4635 nfs4_proc_destroy_session(session
);
4636 dprintk("%s Destroy backchannel for xprt %p\n",
4637 __func__
, session
->clp
->cl_rpcclient
->cl_xprt
);
4638 xprt_destroy_backchannel(session
->clp
->cl_rpcclient
->cl_xprt
,
4639 NFS41_BC_MIN_CALLBACKS
);
4640 nfs4_destroy_slot_tables(session
);
4645 * Initialize the values to be used by the client in CREATE_SESSION
4646 * If nfs4_init_session set the fore channel request and response sizes,
4649 * Set the back channel max_resp_sz_cached to zero to force the client to
4650 * always set csa_cachethis to FALSE because the current implementation
4651 * of the back channel DRC only supports caching the CB_SEQUENCE operation.
4653 static void nfs4_init_channel_attrs(struct nfs41_create_session_args
*args
)
4655 struct nfs4_session
*session
= args
->client
->cl_session
;
4656 unsigned int mxrqst_sz
= session
->fc_attrs
.max_rqst_sz
,
4657 mxresp_sz
= session
->fc_attrs
.max_resp_sz
;
4660 mxrqst_sz
= NFS_MAX_FILE_IO_SIZE
;
4662 mxresp_sz
= NFS_MAX_FILE_IO_SIZE
;
4663 /* Fore channel attributes */
4664 args
->fc_attrs
.headerpadsz
= 0;
4665 args
->fc_attrs
.max_rqst_sz
= mxrqst_sz
;
4666 args
->fc_attrs
.max_resp_sz
= mxresp_sz
;
4667 args
->fc_attrs
.max_resp_sz_cached
= mxresp_sz
;
4668 args
->fc_attrs
.max_ops
= NFS4_MAX_OPS
;
4669 args
->fc_attrs
.max_reqs
= session
->clp
->cl_rpcclient
->cl_xprt
->max_reqs
;
4671 dprintk("%s: Fore Channel : max_rqst_sz=%u max_resp_sz=%u "
4672 "max_resp_sz_cached=%u max_ops=%u max_reqs=%u\n",
4674 args
->fc_attrs
.max_rqst_sz
, args
->fc_attrs
.max_resp_sz
,
4675 args
->fc_attrs
.max_resp_sz_cached
, args
->fc_attrs
.max_ops
,
4676 args
->fc_attrs
.max_reqs
);
4678 /* Back channel attributes */
4679 args
->bc_attrs
.headerpadsz
= 0;
4680 args
->bc_attrs
.max_rqst_sz
= PAGE_SIZE
;
4681 args
->bc_attrs
.max_resp_sz
= PAGE_SIZE
;
4682 args
->bc_attrs
.max_resp_sz_cached
= 0;
4683 args
->bc_attrs
.max_ops
= NFS4_MAX_BACK_CHANNEL_OPS
;
4684 args
->bc_attrs
.max_reqs
= 1;
4686 dprintk("%s: Back Channel : max_rqst_sz=%u max_resp_sz=%u "
4687 "max_resp_sz_cached=%u max_ops=%u max_reqs=%u\n",
4689 args
->bc_attrs
.max_rqst_sz
, args
->bc_attrs
.max_resp_sz
,
4690 args
->bc_attrs
.max_resp_sz_cached
, args
->bc_attrs
.max_ops
,
4691 args
->bc_attrs
.max_reqs
);
4694 static int _verify_channel_attr(char *chan
, char *attr_name
, u32 sent
, u32 rcvd
)
4698 printk(KERN_WARNING
"%s: Session INVALID: %s channel %s increased. "
4699 "sent=%u rcvd=%u\n", __func__
, chan
, attr_name
, sent
, rcvd
);
4703 #define _verify_fore_channel_attr(_name_) \
4704 _verify_channel_attr("fore", #_name_, \
4705 args->fc_attrs._name_, \
4706 session->fc_attrs._name_)
4708 #define _verify_back_channel_attr(_name_) \
4709 _verify_channel_attr("back", #_name_, \
4710 args->bc_attrs._name_, \
4711 session->bc_attrs._name_)
4714 * The server is not allowed to increase the fore channel header pad size,
4715 * maximum response size, or maximum number of operations.
4717 * The back channel attributes are only negotiatied down: We send what the
4718 * (back channel) server insists upon.
4720 static int nfs4_verify_channel_attrs(struct nfs41_create_session_args
*args
,
4721 struct nfs4_session
*session
)
4725 ret
|= _verify_fore_channel_attr(headerpadsz
);
4726 ret
|= _verify_fore_channel_attr(max_resp_sz
);
4727 ret
|= _verify_fore_channel_attr(max_ops
);
4729 ret
|= _verify_back_channel_attr(headerpadsz
);
4730 ret
|= _verify_back_channel_attr(max_rqst_sz
);
4731 ret
|= _verify_back_channel_attr(max_resp_sz
);
4732 ret
|= _verify_back_channel_attr(max_resp_sz_cached
);
4733 ret
|= _verify_back_channel_attr(max_ops
);
4734 ret
|= _verify_back_channel_attr(max_reqs
);
4739 static int _nfs4_proc_create_session(struct nfs_client
*clp
)
4741 struct nfs4_session
*session
= clp
->cl_session
;
4742 struct nfs41_create_session_args args
= {
4744 .cb_program
= NFS4_CALLBACK
,
4746 struct nfs41_create_session_res res
= {
4749 struct rpc_message msg
= {
4750 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_CREATE_SESSION
],
4756 nfs4_init_channel_attrs(&args
);
4757 args
.flags
= (SESSION4_PERSIST
| SESSION4_BACK_CHAN
);
4759 status
= rpc_call_sync(session
->clp
->cl_rpcclient
, &msg
, 0);
4762 /* Verify the session's negotiated channel_attrs values */
4763 status
= nfs4_verify_channel_attrs(&args
, session
);
4765 /* Increment the clientid slot sequence id */
4773 * Issues a CREATE_SESSION operation to the server.
4774 * It is the responsibility of the caller to verify the session is
4775 * expired before calling this routine.
4777 int nfs4_proc_create_session(struct nfs_client
*clp
)
4781 struct nfs4_session
*session
= clp
->cl_session
;
4783 dprintk("--> %s clp=%p session=%p\n", __func__
, clp
, session
);
4785 status
= _nfs4_proc_create_session(clp
);
4789 /* Init and reset the fore channel */
4790 status
= nfs4_init_slot_tables(session
);
4791 dprintk("slot table initialization returned %d\n", status
);
4794 status
= nfs4_reset_slot_tables(session
);
4795 dprintk("slot table reset returned %d\n", status
);
4799 ptr
= (unsigned *)&session
->sess_id
.data
[0];
4800 dprintk("%s client>seqid %d sessionid %u:%u:%u:%u\n", __func__
,
4801 clp
->cl_seqid
, ptr
[0], ptr
[1], ptr
[2], ptr
[3]);
4803 dprintk("<-- %s\n", __func__
);
4808 * Issue the over-the-wire RPC DESTROY_SESSION.
4809 * The caller must serialize access to this routine.
4811 int nfs4_proc_destroy_session(struct nfs4_session
*session
)
4814 struct rpc_message msg
;
4816 dprintk("--> nfs4_proc_destroy_session\n");
4818 /* session is still being setup */
4819 if (session
->clp
->cl_cons_state
!= NFS_CS_READY
)
4822 msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_DESTROY_SESSION
];
4823 msg
.rpc_argp
= session
;
4824 msg
.rpc_resp
= NULL
;
4825 msg
.rpc_cred
= NULL
;
4826 status
= rpc_call_sync(session
->clp
->cl_rpcclient
, &msg
, 0);
4830 "Got error %d from the server on DESTROY_SESSION. "
4831 "Session has been destroyed regardless...\n", status
);
4833 dprintk("<-- nfs4_proc_destroy_session\n");
4837 int nfs4_init_session(struct nfs_server
*server
)
4839 struct nfs_client
*clp
= server
->nfs_client
;
4840 struct nfs4_session
*session
;
4843 if (!nfs4_has_session(clp
))
4846 session
= clp
->cl_session
;
4847 session
->fc_attrs
.max_rqst_sz
= server
->wsize
+ nfs41_maxwrite_overhead
;
4848 session
->fc_attrs
.max_resp_sz
= server
->rsize
+ nfs41_maxread_overhead
;
4850 ret
= nfs4_recover_expired_lease(server
);
4852 ret
= nfs4_check_client_ready(clp
);
4857 * Renew the cl_session lease.
4859 static int nfs4_proc_sequence(struct nfs_client
*clp
, struct rpc_cred
*cred
)
4861 struct nfs4_sequence_args args
;
4862 struct nfs4_sequence_res res
;
4864 struct rpc_message msg
= {
4865 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SEQUENCE
],
4871 args
.sa_cache_this
= 0;
4873 return nfs4_call_sync_sequence(clp
, clp
->cl_rpcclient
, &msg
, &args
,
4877 void nfs41_sequence_call_done(struct rpc_task
*task
, void *data
)
4879 struct nfs_client
*clp
= (struct nfs_client
*)data
;
4881 nfs41_sequence_done(clp
, task
->tk_msg
.rpc_resp
, task
->tk_status
);
4883 if (task
->tk_status
< 0) {
4884 dprintk("%s ERROR %d\n", __func__
, task
->tk_status
);
4886 if (_nfs4_async_handle_error(task
, NULL
, clp
, NULL
)
4888 nfs_restart_rpc(task
, clp
);
4892 dprintk("%s rpc_cred %p\n", __func__
, task
->tk_msg
.rpc_cred
);
4894 kfree(task
->tk_msg
.rpc_argp
);
4895 kfree(task
->tk_msg
.rpc_resp
);
4897 dprintk("<-- %s\n", __func__
);
4900 static void nfs41_sequence_prepare(struct rpc_task
*task
, void *data
)
4902 struct nfs_client
*clp
;
4903 struct nfs4_sequence_args
*args
;
4904 struct nfs4_sequence_res
*res
;
4906 clp
= (struct nfs_client
*)data
;
4907 args
= task
->tk_msg
.rpc_argp
;
4908 res
= task
->tk_msg
.rpc_resp
;
4910 if (nfs4_setup_sequence(clp
, args
, res
, 0, task
))
4912 rpc_call_start(task
);
4915 static const struct rpc_call_ops nfs41_sequence_ops
= {
4916 .rpc_call_done
= nfs41_sequence_call_done
,
4917 .rpc_call_prepare
= nfs41_sequence_prepare
,
4920 static int nfs41_proc_async_sequence(struct nfs_client
*clp
,
4921 struct rpc_cred
*cred
)
4923 struct nfs4_sequence_args
*args
;
4924 struct nfs4_sequence_res
*res
;
4925 struct rpc_message msg
= {
4926 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SEQUENCE
],
4930 args
= kzalloc(sizeof(*args
), GFP_KERNEL
);
4933 res
= kzalloc(sizeof(*res
), GFP_KERNEL
);
4938 res
->sr_slotid
= NFS4_MAX_SLOT_TABLE
;
4939 msg
.rpc_argp
= args
;
4942 return rpc_call_async(clp
->cl_rpcclient
, &msg
, RPC_TASK_SOFT
,
4943 &nfs41_sequence_ops
, (void *)clp
);
4946 struct nfs4_reclaim_complete_data
{
4947 struct nfs_client
*clp
;
4948 struct nfs41_reclaim_complete_args arg
;
4949 struct nfs41_reclaim_complete_res res
;
4952 static void nfs4_reclaim_complete_prepare(struct rpc_task
*task
, void *data
)
4954 struct nfs4_reclaim_complete_data
*calldata
= data
;
4956 if (nfs4_setup_sequence(calldata
->clp
, &calldata
->arg
.seq_args
,
4957 &calldata
->res
.seq_res
, 0, task
))
4960 rpc_call_start(task
);
4963 static void nfs4_reclaim_complete_done(struct rpc_task
*task
, void *data
)
4965 struct nfs4_reclaim_complete_data
*calldata
= data
;
4966 struct nfs_client
*clp
= calldata
->clp
;
4967 struct nfs4_sequence_res
*res
= &calldata
->res
.seq_res
;
4969 dprintk("--> %s\n", __func__
);
4970 nfs41_sequence_done(clp
, res
, task
->tk_status
);
4971 switch (task
->tk_status
) {
4973 case -NFS4ERR_COMPLETE_ALREADY
:
4975 case -NFS4ERR_BADSESSION
:
4976 case -NFS4ERR_DEADSESSION
:
4978 * Handle the session error, but do not retry the operation, as
4979 * we have no way of telling whether the clientid had to be
4980 * reset before we got our reply. If reset, a new wave of
4981 * reclaim operations will follow, containing their own reclaim
4982 * complete. We don't want our retry to get on the way of
4983 * recovery by incorrectly indicating to the server that we're
4984 * done reclaiming state since the process had to be restarted.
4986 _nfs4_async_handle_error(task
, NULL
, clp
, NULL
);
4989 if (_nfs4_async_handle_error(
4990 task
, NULL
, clp
, NULL
) == -EAGAIN
) {
4991 rpc_restart_call_prepare(task
);
4996 dprintk("<-- %s\n", __func__
);
4999 static void nfs4_free_reclaim_complete_data(void *data
)
5001 struct nfs4_reclaim_complete_data
*calldata
= data
;
5006 static const struct rpc_call_ops nfs4_reclaim_complete_call_ops
= {
5007 .rpc_call_prepare
= nfs4_reclaim_complete_prepare
,
5008 .rpc_call_done
= nfs4_reclaim_complete_done
,
5009 .rpc_release
= nfs4_free_reclaim_complete_data
,
5013 * Issue a global reclaim complete.
5015 static int nfs41_proc_reclaim_complete(struct nfs_client
*clp
)
5017 struct nfs4_reclaim_complete_data
*calldata
;
5018 struct rpc_task
*task
;
5019 struct rpc_message msg
= {
5020 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RECLAIM_COMPLETE
],
5022 struct rpc_task_setup task_setup_data
= {
5023 .rpc_client
= clp
->cl_rpcclient
,
5024 .rpc_message
= &msg
,
5025 .callback_ops
= &nfs4_reclaim_complete_call_ops
,
5026 .flags
= RPC_TASK_ASYNC
,
5028 int status
= -ENOMEM
;
5030 dprintk("--> %s\n", __func__
);
5031 calldata
= kzalloc(sizeof(*calldata
), GFP_KERNEL
);
5032 if (calldata
== NULL
)
5034 calldata
->clp
= clp
;
5035 calldata
->arg
.one_fs
= 0;
5036 calldata
->res
.seq_res
.sr_slotid
= NFS4_MAX_SLOT_TABLE
;
5038 msg
.rpc_argp
= &calldata
->arg
;
5039 msg
.rpc_resp
= &calldata
->res
;
5040 task_setup_data
.callback_data
= calldata
;
5041 task
= rpc_run_task(&task_setup_data
);
5043 status
= PTR_ERR(task
);
5046 dprintk("<-- %s status=%d\n", __func__
, status
);
5049 #endif /* CONFIG_NFS_V4_1 */
5051 struct nfs4_state_recovery_ops nfs40_reboot_recovery_ops
= {
5052 .owner_flag_bit
= NFS_OWNER_RECLAIM_REBOOT
,
5053 .state_flag_bit
= NFS_STATE_RECLAIM_REBOOT
,
5054 .recover_open
= nfs4_open_reclaim
,
5055 .recover_lock
= nfs4_lock_reclaim
,
5056 .establish_clid
= nfs4_init_clientid
,
5057 .get_clid_cred
= nfs4_get_setclientid_cred
,
5060 #if defined(CONFIG_NFS_V4_1)
5061 struct nfs4_state_recovery_ops nfs41_reboot_recovery_ops
= {
5062 .owner_flag_bit
= NFS_OWNER_RECLAIM_REBOOT
,
5063 .state_flag_bit
= NFS_STATE_RECLAIM_REBOOT
,
5064 .recover_open
= nfs4_open_reclaim
,
5065 .recover_lock
= nfs4_lock_reclaim
,
5066 .establish_clid
= nfs41_init_clientid
,
5067 .get_clid_cred
= nfs4_get_exchange_id_cred
,
5068 .reclaim_complete
= nfs41_proc_reclaim_complete
,
5070 #endif /* CONFIG_NFS_V4_1 */
5072 struct nfs4_state_recovery_ops nfs40_nograce_recovery_ops
= {
5073 .owner_flag_bit
= NFS_OWNER_RECLAIM_NOGRACE
,
5074 .state_flag_bit
= NFS_STATE_RECLAIM_NOGRACE
,
5075 .recover_open
= nfs4_open_expired
,
5076 .recover_lock
= nfs4_lock_expired
,
5077 .establish_clid
= nfs4_init_clientid
,
5078 .get_clid_cred
= nfs4_get_setclientid_cred
,
5081 #if defined(CONFIG_NFS_V4_1)
5082 struct nfs4_state_recovery_ops nfs41_nograce_recovery_ops
= {
5083 .owner_flag_bit
= NFS_OWNER_RECLAIM_NOGRACE
,
5084 .state_flag_bit
= NFS_STATE_RECLAIM_NOGRACE
,
5085 .recover_open
= nfs4_open_expired
,
5086 .recover_lock
= nfs4_lock_expired
,
5087 .establish_clid
= nfs41_init_clientid
,
5088 .get_clid_cred
= nfs4_get_exchange_id_cred
,
5090 #endif /* CONFIG_NFS_V4_1 */
5092 struct nfs4_state_maintenance_ops nfs40_state_renewal_ops
= {
5093 .sched_state_renewal
= nfs4_proc_async_renew
,
5094 .get_state_renewal_cred_locked
= nfs4_get_renew_cred_locked
,
5095 .renew_lease
= nfs4_proc_renew
,
5098 #if defined(CONFIG_NFS_V4_1)
5099 struct nfs4_state_maintenance_ops nfs41_state_renewal_ops
= {
5100 .sched_state_renewal
= nfs41_proc_async_sequence
,
5101 .get_state_renewal_cred_locked
= nfs4_get_machine_cred_locked
,
5102 .renew_lease
= nfs4_proc_sequence
,
5107 * Per minor version reboot and network partition recovery ops
5110 struct nfs4_state_recovery_ops
*nfs4_reboot_recovery_ops
[] = {
5111 &nfs40_reboot_recovery_ops
,
5112 #if defined(CONFIG_NFS_V4_1)
5113 &nfs41_reboot_recovery_ops
,
5117 struct nfs4_state_recovery_ops
*nfs4_nograce_recovery_ops
[] = {
5118 &nfs40_nograce_recovery_ops
,
5119 #if defined(CONFIG_NFS_V4_1)
5120 &nfs41_nograce_recovery_ops
,
5124 struct nfs4_state_maintenance_ops
*nfs4_state_renewal_ops
[] = {
5125 &nfs40_state_renewal_ops
,
5126 #if defined(CONFIG_NFS_V4_1)
5127 &nfs41_state_renewal_ops
,
5131 static const struct inode_operations nfs4_file_inode_operations
= {
5132 .permission
= nfs_permission
,
5133 .getattr
= nfs_getattr
,
5134 .setattr
= nfs_setattr
,
5135 .getxattr
= nfs4_getxattr
,
5136 .setxattr
= nfs4_setxattr
,
5137 .listxattr
= nfs4_listxattr
,
5140 const struct nfs_rpc_ops nfs_v4_clientops
= {
5141 .version
= 4, /* protocol version */
5142 .dentry_ops
= &nfs4_dentry_operations
,
5143 .dir_inode_ops
= &nfs4_dir_inode_operations
,
5144 .file_inode_ops
= &nfs4_file_inode_operations
,
5145 .getroot
= nfs4_proc_get_root
,
5146 .getattr
= nfs4_proc_getattr
,
5147 .setattr
= nfs4_proc_setattr
,
5148 .lookupfh
= nfs4_proc_lookupfh
,
5149 .lookup
= nfs4_proc_lookup
,
5150 .access
= nfs4_proc_access
,
5151 .readlink
= nfs4_proc_readlink
,
5152 .create
= nfs4_proc_create
,
5153 .remove
= nfs4_proc_remove
,
5154 .unlink_setup
= nfs4_proc_unlink_setup
,
5155 .unlink_done
= nfs4_proc_unlink_done
,
5156 .rename
= nfs4_proc_rename
,
5157 .link
= nfs4_proc_link
,
5158 .symlink
= nfs4_proc_symlink
,
5159 .mkdir
= nfs4_proc_mkdir
,
5160 .rmdir
= nfs4_proc_remove
,
5161 .readdir
= nfs4_proc_readdir
,
5162 .mknod
= nfs4_proc_mknod
,
5163 .statfs
= nfs4_proc_statfs
,
5164 .fsinfo
= nfs4_proc_fsinfo
,
5165 .pathconf
= nfs4_proc_pathconf
,
5166 .set_capabilities
= nfs4_server_capabilities
,
5167 .decode_dirent
= nfs4_decode_dirent
,
5168 .read_setup
= nfs4_proc_read_setup
,
5169 .read_done
= nfs4_read_done
,
5170 .write_setup
= nfs4_proc_write_setup
,
5171 .write_done
= nfs4_write_done
,
5172 .commit_setup
= nfs4_proc_commit_setup
,
5173 .commit_done
= nfs4_commit_done
,
5174 .lock
= nfs4_proc_lock
,
5175 .clear_acl_cache
= nfs4_zap_acl_attr
,
5176 .close_context
= nfs4_close_context
,