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 set_bit(NFS4CLNT_SESSION_SETUP
, &clp
->cl_state
);
274 exception
->retry
= 1;
276 #endif /* !defined(CONFIG_NFS_V4_1) */
277 case -NFS4ERR_FILE_OPEN
:
280 ret
= nfs4_delay(server
->client
, &exception
->timeout
);
283 case -NFS4ERR_OLD_STATEID
:
284 exception
->retry
= 1;
286 /* We failed to handle the error */
287 return nfs4_map_errors(ret
);
291 static void renew_lease(const struct nfs_server
*server
, unsigned long timestamp
)
293 struct nfs_client
*clp
= server
->nfs_client
;
294 spin_lock(&clp
->cl_lock
);
295 if (time_before(clp
->cl_last_renewal
,timestamp
))
296 clp
->cl_last_renewal
= timestamp
;
297 spin_unlock(&clp
->cl_lock
);
300 #if defined(CONFIG_NFS_V4_1)
303 * nfs4_free_slot - free a slot and efficiently update slot table.
305 * freeing a slot is trivially done by clearing its respective bit
307 * If the freed slotid equals highest_used_slotid we want to update it
308 * so that the server would be able to size down the slot table if needed,
309 * otherwise we know that the highest_used_slotid is still in use.
310 * When updating highest_used_slotid there may be "holes" in the bitmap
311 * so we need to scan down from highest_used_slotid to 0 looking for the now
312 * highest slotid in use.
313 * If none found, highest_used_slotid is set to -1.
316 nfs4_free_slot(struct nfs4_slot_table
*tbl
, u8 free_slotid
)
318 int slotid
= free_slotid
;
320 spin_lock(&tbl
->slot_tbl_lock
);
321 /* clear used bit in bitmap */
322 __clear_bit(slotid
, tbl
->used_slots
);
324 /* update highest_used_slotid when it is freed */
325 if (slotid
== tbl
->highest_used_slotid
) {
326 slotid
= find_last_bit(tbl
->used_slots
, tbl
->max_slots
);
327 if (slotid
>= 0 && slotid
< tbl
->max_slots
)
328 tbl
->highest_used_slotid
= slotid
;
330 tbl
->highest_used_slotid
= -1;
332 rpc_wake_up_next(&tbl
->slot_tbl_waitq
);
333 spin_unlock(&tbl
->slot_tbl_lock
);
334 dprintk("%s: free_slotid %u highest_used_slotid %d\n", __func__
,
335 free_slotid
, tbl
->highest_used_slotid
);
338 void nfs41_sequence_free_slot(const struct nfs_client
*clp
,
339 struct nfs4_sequence_res
*res
)
341 struct nfs4_slot_table
*tbl
;
343 if (!nfs4_has_session(clp
)) {
344 dprintk("%s: No session\n", __func__
);
347 tbl
= &clp
->cl_session
->fc_slot_table
;
348 if (res
->sr_slotid
== NFS4_MAX_SLOT_TABLE
) {
349 dprintk("%s: No slot\n", __func__
);
350 /* just wake up the next guy waiting since
351 * we may have not consumed a slot after all */
352 rpc_wake_up_next(&tbl
->slot_tbl_waitq
);
355 nfs4_free_slot(tbl
, res
->sr_slotid
);
356 res
->sr_slotid
= NFS4_MAX_SLOT_TABLE
;
359 static void nfs41_sequence_done(struct nfs_client
*clp
,
360 struct nfs4_sequence_res
*res
,
363 unsigned long timestamp
;
364 struct nfs4_slot_table
*tbl
;
365 struct nfs4_slot
*slot
;
368 * sr_status remains 1 if an RPC level error occurred. The server
369 * may or may not have processed the sequence operation..
370 * Proceed as if the server received and processed the sequence
373 if (res
->sr_status
== 1)
374 res
->sr_status
= NFS_OK
;
376 /* -ERESTARTSYS can result in skipping nfs41_sequence_setup */
377 if (res
->sr_slotid
== NFS4_MAX_SLOT_TABLE
)
380 tbl
= &clp
->cl_session
->fc_slot_table
;
381 slot
= tbl
->slots
+ res
->sr_slotid
;
383 if (res
->sr_status
== 0) {
384 /* Update the slot's sequence and clientid lease timer */
386 timestamp
= res
->sr_renewal_time
;
387 spin_lock(&clp
->cl_lock
);
388 if (time_before(clp
->cl_last_renewal
, timestamp
))
389 clp
->cl_last_renewal
= timestamp
;
390 spin_unlock(&clp
->cl_lock
);
394 /* The session may be reset by one of the error handlers. */
395 dprintk("%s: Error %d free the slot \n", __func__
, res
->sr_status
);
396 nfs41_sequence_free_slot(clp
, res
);
400 * nfs4_find_slot - efficiently look for a free slot
402 * nfs4_find_slot looks for an unset bit in the used_slots bitmap.
403 * If found, we mark the slot as used, update the highest_used_slotid,
404 * and respectively set up the sequence operation args.
405 * The slot number is returned if found, or NFS4_MAX_SLOT_TABLE otherwise.
407 * Note: must be called with under the slot_tbl_lock.
410 nfs4_find_slot(struct nfs4_slot_table
*tbl
, struct rpc_task
*task
)
413 u8 ret_id
= NFS4_MAX_SLOT_TABLE
;
414 BUILD_BUG_ON((u8
)NFS4_MAX_SLOT_TABLE
!= (int)NFS4_MAX_SLOT_TABLE
);
416 dprintk("--> %s used_slots=%04lx highest_used=%d max_slots=%d\n",
417 __func__
, tbl
->used_slots
[0], tbl
->highest_used_slotid
,
419 slotid
= find_first_zero_bit(tbl
->used_slots
, tbl
->max_slots
);
420 if (slotid
>= tbl
->max_slots
)
422 __set_bit(slotid
, tbl
->used_slots
);
423 if (slotid
> tbl
->highest_used_slotid
)
424 tbl
->highest_used_slotid
= slotid
;
427 dprintk("<-- %s used_slots=%04lx highest_used=%d slotid=%d \n",
428 __func__
, tbl
->used_slots
[0], tbl
->highest_used_slotid
, ret_id
);
432 static int nfs4_recover_session(struct nfs4_session
*session
)
434 struct nfs_client
*clp
= session
->clp
;
438 for (loop
= NFS4_MAX_LOOP_ON_RECOVER
; loop
!= 0; loop
--) {
439 ret
= nfs4_wait_clnt_recover(clp
);
442 if (!test_bit(NFS4CLNT_SESSION_SETUP
, &clp
->cl_state
))
444 nfs4_schedule_state_manager(clp
);
450 static int nfs41_setup_sequence(struct nfs4_session
*session
,
451 struct nfs4_sequence_args
*args
,
452 struct nfs4_sequence_res
*res
,
454 struct rpc_task
*task
)
456 struct nfs4_slot
*slot
;
457 struct nfs4_slot_table
*tbl
;
461 dprintk("--> %s\n", __func__
);
462 /* slot already allocated? */
463 if (res
->sr_slotid
!= NFS4_MAX_SLOT_TABLE
)
466 memset(res
, 0, sizeof(*res
));
467 res
->sr_slotid
= NFS4_MAX_SLOT_TABLE
;
468 tbl
= &session
->fc_slot_table
;
470 spin_lock(&tbl
->slot_tbl_lock
);
471 if (test_bit(NFS4CLNT_SESSION_SETUP
, &session
->clp
->cl_state
)) {
472 if (tbl
->highest_used_slotid
!= -1) {
473 rpc_sleep_on(&tbl
->slot_tbl_waitq
, task
, NULL
);
474 spin_unlock(&tbl
->slot_tbl_lock
);
475 dprintk("<-- %s: Session reset: draining\n", __func__
);
479 /* The slot table is empty; start the reset thread */
480 dprintk("%s Session Reset\n", __func__
);
481 spin_unlock(&tbl
->slot_tbl_lock
);
482 status
= nfs4_recover_session(session
);
485 spin_lock(&tbl
->slot_tbl_lock
);
488 slotid
= nfs4_find_slot(tbl
, task
);
489 if (slotid
== NFS4_MAX_SLOT_TABLE
) {
490 rpc_sleep_on(&tbl
->slot_tbl_waitq
, task
, NULL
);
491 spin_unlock(&tbl
->slot_tbl_lock
);
492 dprintk("<-- %s: no free slots\n", __func__
);
495 spin_unlock(&tbl
->slot_tbl_lock
);
497 slot
= tbl
->slots
+ slotid
;
498 args
->sa_session
= session
;
499 args
->sa_slotid
= slotid
;
500 args
->sa_cache_this
= cache_reply
;
502 dprintk("<-- %s slotid=%d seqid=%d\n", __func__
, slotid
, slot
->seq_nr
);
504 res
->sr_session
= session
;
505 res
->sr_slotid
= slotid
;
506 res
->sr_renewal_time
= jiffies
;
508 * sr_status is only set in decode_sequence, and so will remain
509 * set to 1 if an rpc level failure occurs.
515 int nfs4_setup_sequence(struct nfs_client
*clp
,
516 struct nfs4_sequence_args
*args
,
517 struct nfs4_sequence_res
*res
,
519 struct rpc_task
*task
)
523 dprintk("--> %s clp %p session %p sr_slotid %d\n",
524 __func__
, clp
, clp
->cl_session
, res
->sr_slotid
);
526 if (!nfs4_has_session(clp
))
528 ret
= nfs41_setup_sequence(clp
->cl_session
, args
, res
, cache_reply
,
530 if (ret
!= -EAGAIN
) {
531 /* terminate rpc task */
532 task
->tk_status
= ret
;
533 task
->tk_action
= NULL
;
536 dprintk("<-- %s status=%d\n", __func__
, ret
);
540 struct nfs41_call_sync_data
{
541 struct nfs_client
*clp
;
542 struct nfs4_sequence_args
*seq_args
;
543 struct nfs4_sequence_res
*seq_res
;
547 static void nfs41_call_sync_prepare(struct rpc_task
*task
, void *calldata
)
549 struct nfs41_call_sync_data
*data
= calldata
;
551 dprintk("--> %s data->clp->cl_session %p\n", __func__
,
552 data
->clp
->cl_session
);
553 if (nfs4_setup_sequence(data
->clp
, data
->seq_args
,
554 data
->seq_res
, data
->cache_reply
, task
))
556 rpc_call_start(task
);
559 static void nfs41_call_sync_done(struct rpc_task
*task
, void *calldata
)
561 struct nfs41_call_sync_data
*data
= calldata
;
563 nfs41_sequence_done(data
->clp
, data
->seq_res
, task
->tk_status
);
564 nfs41_sequence_free_slot(data
->clp
, data
->seq_res
);
567 struct rpc_call_ops nfs41_call_sync_ops
= {
568 .rpc_call_prepare
= nfs41_call_sync_prepare
,
569 .rpc_call_done
= nfs41_call_sync_done
,
572 static int nfs4_call_sync_sequence(struct nfs_client
*clp
,
573 struct rpc_clnt
*clnt
,
574 struct rpc_message
*msg
,
575 struct nfs4_sequence_args
*args
,
576 struct nfs4_sequence_res
*res
,
580 struct rpc_task
*task
;
581 struct nfs41_call_sync_data data
= {
585 .cache_reply
= cache_reply
,
587 struct rpc_task_setup task_setup
= {
590 .callback_ops
= &nfs41_call_sync_ops
,
591 .callback_data
= &data
594 res
->sr_slotid
= NFS4_MAX_SLOT_TABLE
;
595 task
= rpc_run_task(&task_setup
);
599 ret
= task
->tk_status
;
605 int _nfs4_call_sync_session(struct nfs_server
*server
,
606 struct rpc_message
*msg
,
607 struct nfs4_sequence_args
*args
,
608 struct nfs4_sequence_res
*res
,
611 return nfs4_call_sync_sequence(server
->nfs_client
, server
->client
,
612 msg
, args
, res
, cache_reply
);
615 #endif /* CONFIG_NFS_V4_1 */
617 int _nfs4_call_sync(struct nfs_server
*server
,
618 struct rpc_message
*msg
,
619 struct nfs4_sequence_args
*args
,
620 struct nfs4_sequence_res
*res
,
623 args
->sa_session
= res
->sr_session
= NULL
;
624 return rpc_call_sync(server
->client
, msg
, 0);
627 #define nfs4_call_sync(server, msg, args, res, cache_reply) \
628 (server)->nfs_client->cl_call_sync((server), (msg), &(args)->seq_args, \
629 &(res)->seq_res, (cache_reply))
631 static void nfs4_sequence_done(const struct nfs_server
*server
,
632 struct nfs4_sequence_res
*res
, int rpc_status
)
634 #ifdef CONFIG_NFS_V4_1
635 if (nfs4_has_session(server
->nfs_client
))
636 nfs41_sequence_done(server
->nfs_client
, res
, rpc_status
);
637 #endif /* CONFIG_NFS_V4_1 */
640 /* no restart, therefore free slot here */
641 static void nfs4_sequence_done_free_slot(const struct nfs_server
*server
,
642 struct nfs4_sequence_res
*res
,
645 nfs4_sequence_done(server
, res
, rpc_status
);
646 nfs4_sequence_free_slot(server
->nfs_client
, res
);
649 static void update_changeattr(struct inode
*dir
, struct nfs4_change_info
*cinfo
)
651 struct nfs_inode
*nfsi
= NFS_I(dir
);
653 spin_lock(&dir
->i_lock
);
654 nfsi
->cache_validity
|= NFS_INO_INVALID_ATTR
|NFS_INO_REVAL_PAGECACHE
|NFS_INO_INVALID_DATA
;
655 if (!cinfo
->atomic
|| cinfo
->before
!= nfsi
->change_attr
)
656 nfs_force_lookup_revalidate(dir
);
657 nfsi
->change_attr
= cinfo
->after
;
658 spin_unlock(&dir
->i_lock
);
661 struct nfs4_opendata
{
663 struct nfs_openargs o_arg
;
664 struct nfs_openres o_res
;
665 struct nfs_open_confirmargs c_arg
;
666 struct nfs_open_confirmres c_res
;
667 struct nfs_fattr f_attr
;
668 struct nfs_fattr dir_attr
;
671 struct nfs4_state_owner
*owner
;
672 struct nfs4_state
*state
;
674 unsigned long timestamp
;
675 unsigned int rpc_done
: 1;
681 static void nfs4_init_opendata_res(struct nfs4_opendata
*p
)
683 p
->o_res
.f_attr
= &p
->f_attr
;
684 p
->o_res
.dir_attr
= &p
->dir_attr
;
685 p
->o_res
.seqid
= p
->o_arg
.seqid
;
686 p
->c_res
.seqid
= p
->c_arg
.seqid
;
687 p
->o_res
.server
= p
->o_arg
.server
;
688 nfs_fattr_init(&p
->f_attr
);
689 nfs_fattr_init(&p
->dir_attr
);
690 p
->o_res
.seq_res
.sr_slotid
= NFS4_MAX_SLOT_TABLE
;
693 static struct nfs4_opendata
*nfs4_opendata_alloc(struct path
*path
,
694 struct nfs4_state_owner
*sp
, fmode_t fmode
, int flags
,
695 const struct iattr
*attrs
)
697 struct dentry
*parent
= dget_parent(path
->dentry
);
698 struct inode
*dir
= parent
->d_inode
;
699 struct nfs_server
*server
= NFS_SERVER(dir
);
700 struct nfs4_opendata
*p
;
702 p
= kzalloc(sizeof(*p
), GFP_KERNEL
);
705 p
->o_arg
.seqid
= nfs_alloc_seqid(&sp
->so_seqid
);
706 if (p
->o_arg
.seqid
== NULL
)
708 p
->path
.mnt
= mntget(path
->mnt
);
709 p
->path
.dentry
= dget(path
->dentry
);
712 atomic_inc(&sp
->so_count
);
713 p
->o_arg
.fh
= NFS_FH(dir
);
714 p
->o_arg
.open_flags
= flags
;
715 p
->o_arg
.fmode
= fmode
& (FMODE_READ
|FMODE_WRITE
);
716 p
->o_arg
.clientid
= server
->nfs_client
->cl_clientid
;
717 p
->o_arg
.id
= sp
->so_owner_id
.id
;
718 p
->o_arg
.name
= &p
->path
.dentry
->d_name
;
719 p
->o_arg
.server
= server
;
720 p
->o_arg
.bitmask
= server
->attr_bitmask
;
721 p
->o_arg
.claim
= NFS4_OPEN_CLAIM_NULL
;
722 if (flags
& O_EXCL
) {
723 u32
*s
= (u32
*) p
->o_arg
.u
.verifier
.data
;
726 } else if (flags
& O_CREAT
) {
727 p
->o_arg
.u
.attrs
= &p
->attrs
;
728 memcpy(&p
->attrs
, attrs
, sizeof(p
->attrs
));
730 p
->c_arg
.fh
= &p
->o_res
.fh
;
731 p
->c_arg
.stateid
= &p
->o_res
.stateid
;
732 p
->c_arg
.seqid
= p
->o_arg
.seqid
;
733 nfs4_init_opendata_res(p
);
743 static void nfs4_opendata_free(struct kref
*kref
)
745 struct nfs4_opendata
*p
= container_of(kref
,
746 struct nfs4_opendata
, kref
);
748 nfs_free_seqid(p
->o_arg
.seqid
);
749 if (p
->state
!= NULL
)
750 nfs4_put_open_state(p
->state
);
751 nfs4_put_state_owner(p
->owner
);
757 static void nfs4_opendata_put(struct nfs4_opendata
*p
)
760 kref_put(&p
->kref
, nfs4_opendata_free
);
763 static int nfs4_wait_for_completion_rpc_task(struct rpc_task
*task
)
767 ret
= rpc_wait_for_completion_task(task
);
771 static int can_open_cached(struct nfs4_state
*state
, fmode_t mode
, int open_mode
)
775 if (open_mode
& O_EXCL
)
777 switch (mode
& (FMODE_READ
|FMODE_WRITE
)) {
779 ret
|= test_bit(NFS_O_RDONLY_STATE
, &state
->flags
) != 0;
782 ret
|= test_bit(NFS_O_WRONLY_STATE
, &state
->flags
) != 0;
784 case FMODE_READ
|FMODE_WRITE
:
785 ret
|= test_bit(NFS_O_RDWR_STATE
, &state
->flags
) != 0;
791 static int can_open_delegated(struct nfs_delegation
*delegation
, fmode_t fmode
)
793 if ((delegation
->type
& fmode
) != fmode
)
795 if (test_bit(NFS_DELEGATION_NEED_RECLAIM
, &delegation
->flags
))
797 nfs_mark_delegation_referenced(delegation
);
801 static void update_open_stateflags(struct nfs4_state
*state
, fmode_t fmode
)
810 case FMODE_READ
|FMODE_WRITE
:
813 nfs4_state_set_mode_locked(state
, state
->state
| fmode
);
816 static void nfs_set_open_stateid_locked(struct nfs4_state
*state
, nfs4_stateid
*stateid
, fmode_t fmode
)
818 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) == 0)
819 memcpy(state
->stateid
.data
, stateid
->data
, sizeof(state
->stateid
.data
));
820 memcpy(state
->open_stateid
.data
, stateid
->data
, sizeof(state
->open_stateid
.data
));
823 set_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
826 set_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
828 case FMODE_READ
|FMODE_WRITE
:
829 set_bit(NFS_O_RDWR_STATE
, &state
->flags
);
833 static void nfs_set_open_stateid(struct nfs4_state
*state
, nfs4_stateid
*stateid
, fmode_t fmode
)
835 write_seqlock(&state
->seqlock
);
836 nfs_set_open_stateid_locked(state
, stateid
, fmode
);
837 write_sequnlock(&state
->seqlock
);
840 static void __update_open_stateid(struct nfs4_state
*state
, nfs4_stateid
*open_stateid
, const nfs4_stateid
*deleg_stateid
, fmode_t fmode
)
843 * Protect the call to nfs4_state_set_mode_locked and
844 * serialise the stateid update
846 write_seqlock(&state
->seqlock
);
847 if (deleg_stateid
!= NULL
) {
848 memcpy(state
->stateid
.data
, deleg_stateid
->data
, sizeof(state
->stateid
.data
));
849 set_bit(NFS_DELEGATED_STATE
, &state
->flags
);
851 if (open_stateid
!= NULL
)
852 nfs_set_open_stateid_locked(state
, open_stateid
, fmode
);
853 write_sequnlock(&state
->seqlock
);
854 spin_lock(&state
->owner
->so_lock
);
855 update_open_stateflags(state
, fmode
);
856 spin_unlock(&state
->owner
->so_lock
);
859 static int update_open_stateid(struct nfs4_state
*state
, nfs4_stateid
*open_stateid
, nfs4_stateid
*delegation
, fmode_t fmode
)
861 struct nfs_inode
*nfsi
= NFS_I(state
->inode
);
862 struct nfs_delegation
*deleg_cur
;
865 fmode
&= (FMODE_READ
|FMODE_WRITE
);
868 deleg_cur
= rcu_dereference(nfsi
->delegation
);
869 if (deleg_cur
== NULL
)
872 spin_lock(&deleg_cur
->lock
);
873 if (nfsi
->delegation
!= deleg_cur
||
874 (deleg_cur
->type
& fmode
) != fmode
)
875 goto no_delegation_unlock
;
877 if (delegation
== NULL
)
878 delegation
= &deleg_cur
->stateid
;
879 else if (memcmp(deleg_cur
->stateid
.data
, delegation
->data
, NFS4_STATEID_SIZE
) != 0)
880 goto no_delegation_unlock
;
882 nfs_mark_delegation_referenced(deleg_cur
);
883 __update_open_stateid(state
, open_stateid
, &deleg_cur
->stateid
, fmode
);
885 no_delegation_unlock
:
886 spin_unlock(&deleg_cur
->lock
);
890 if (!ret
&& open_stateid
!= NULL
) {
891 __update_open_stateid(state
, open_stateid
, NULL
, fmode
);
899 static void nfs4_return_incompatible_delegation(struct inode
*inode
, fmode_t fmode
)
901 struct nfs_delegation
*delegation
;
904 delegation
= rcu_dereference(NFS_I(inode
)->delegation
);
905 if (delegation
== NULL
|| (delegation
->type
& fmode
) == fmode
) {
910 nfs_inode_return_delegation(inode
);
913 static struct nfs4_state
*nfs4_try_open_cached(struct nfs4_opendata
*opendata
)
915 struct nfs4_state
*state
= opendata
->state
;
916 struct nfs_inode
*nfsi
= NFS_I(state
->inode
);
917 struct nfs_delegation
*delegation
;
918 int open_mode
= opendata
->o_arg
.open_flags
& O_EXCL
;
919 fmode_t fmode
= opendata
->o_arg
.fmode
;
920 nfs4_stateid stateid
;
924 if (can_open_cached(state
, fmode
, open_mode
)) {
925 spin_lock(&state
->owner
->so_lock
);
926 if (can_open_cached(state
, fmode
, open_mode
)) {
927 update_open_stateflags(state
, fmode
);
928 spin_unlock(&state
->owner
->so_lock
);
929 goto out_return_state
;
931 spin_unlock(&state
->owner
->so_lock
);
934 delegation
= rcu_dereference(nfsi
->delegation
);
935 if (delegation
== NULL
||
936 !can_open_delegated(delegation
, fmode
)) {
940 /* Save the delegation */
941 memcpy(stateid
.data
, delegation
->stateid
.data
, sizeof(stateid
.data
));
943 ret
= nfs_may_open(state
->inode
, state
->owner
->so_cred
, open_mode
);
948 /* Try to update the stateid using the delegation */
949 if (update_open_stateid(state
, NULL
, &stateid
, fmode
))
950 goto out_return_state
;
955 atomic_inc(&state
->count
);
959 static struct nfs4_state
*nfs4_opendata_to_nfs4_state(struct nfs4_opendata
*data
)
962 struct nfs4_state
*state
= NULL
;
963 struct nfs_delegation
*delegation
;
966 if (!data
->rpc_done
) {
967 state
= nfs4_try_open_cached(data
);
972 if (!(data
->f_attr
.valid
& NFS_ATTR_FATTR
))
974 inode
= nfs_fhget(data
->dir
->d_sb
, &data
->o_res
.fh
, &data
->f_attr
);
975 ret
= PTR_ERR(inode
);
979 state
= nfs4_get_open_state(inode
, data
->owner
);
982 if (data
->o_res
.delegation_type
!= 0) {
983 int delegation_flags
= 0;
986 delegation
= rcu_dereference(NFS_I(inode
)->delegation
);
988 delegation_flags
= delegation
->flags
;
990 if ((delegation_flags
& 1UL<<NFS_DELEGATION_NEED_RECLAIM
) == 0)
991 nfs_inode_set_delegation(state
->inode
,
992 data
->owner
->so_cred
,
995 nfs_inode_reclaim_delegation(state
->inode
,
996 data
->owner
->so_cred
,
1000 update_open_stateid(state
, &data
->o_res
.stateid
, NULL
,
1008 return ERR_PTR(ret
);
1011 static struct nfs_open_context
*nfs4_state_find_open_context(struct nfs4_state
*state
)
1013 struct nfs_inode
*nfsi
= NFS_I(state
->inode
);
1014 struct nfs_open_context
*ctx
;
1016 spin_lock(&state
->inode
->i_lock
);
1017 list_for_each_entry(ctx
, &nfsi
->open_files
, list
) {
1018 if (ctx
->state
!= state
)
1020 get_nfs_open_context(ctx
);
1021 spin_unlock(&state
->inode
->i_lock
);
1024 spin_unlock(&state
->inode
->i_lock
);
1025 return ERR_PTR(-ENOENT
);
1028 static struct nfs4_opendata
*nfs4_open_recoverdata_alloc(struct nfs_open_context
*ctx
, struct nfs4_state
*state
)
1030 struct nfs4_opendata
*opendata
;
1032 opendata
= nfs4_opendata_alloc(&ctx
->path
, state
->owner
, 0, 0, NULL
);
1033 if (opendata
== NULL
)
1034 return ERR_PTR(-ENOMEM
);
1035 opendata
->state
= state
;
1036 atomic_inc(&state
->count
);
1040 static int nfs4_open_recover_helper(struct nfs4_opendata
*opendata
, fmode_t fmode
, struct nfs4_state
**res
)
1042 struct nfs4_state
*newstate
;
1045 opendata
->o_arg
.open_flags
= 0;
1046 opendata
->o_arg
.fmode
= fmode
;
1047 memset(&opendata
->o_res
, 0, sizeof(opendata
->o_res
));
1048 memset(&opendata
->c_res
, 0, sizeof(opendata
->c_res
));
1049 nfs4_init_opendata_res(opendata
);
1050 ret
= _nfs4_proc_open(opendata
);
1053 newstate
= nfs4_opendata_to_nfs4_state(opendata
);
1054 if (IS_ERR(newstate
))
1055 return PTR_ERR(newstate
);
1056 nfs4_close_state(&opendata
->path
, newstate
, fmode
);
1061 static int nfs4_open_recover(struct nfs4_opendata
*opendata
, struct nfs4_state
*state
)
1063 struct nfs4_state
*newstate
;
1066 /* memory barrier prior to reading state->n_* */
1067 clear_bit(NFS_DELEGATED_STATE
, &state
->flags
);
1069 if (state
->n_rdwr
!= 0) {
1070 ret
= nfs4_open_recover_helper(opendata
, FMODE_READ
|FMODE_WRITE
, &newstate
);
1073 if (newstate
!= state
)
1076 if (state
->n_wronly
!= 0) {
1077 ret
= nfs4_open_recover_helper(opendata
, FMODE_WRITE
, &newstate
);
1080 if (newstate
!= state
)
1083 if (state
->n_rdonly
!= 0) {
1084 ret
= nfs4_open_recover_helper(opendata
, FMODE_READ
, &newstate
);
1087 if (newstate
!= state
)
1091 * We may have performed cached opens for all three recoveries.
1092 * Check if we need to update the current stateid.
1094 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) == 0 &&
1095 memcmp(state
->stateid
.data
, state
->open_stateid
.data
, sizeof(state
->stateid
.data
)) != 0) {
1096 write_seqlock(&state
->seqlock
);
1097 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) == 0)
1098 memcpy(state
->stateid
.data
, state
->open_stateid
.data
, sizeof(state
->stateid
.data
));
1099 write_sequnlock(&state
->seqlock
);
1106 * reclaim state on the server after a reboot.
1108 static int _nfs4_do_open_reclaim(struct nfs_open_context
*ctx
, struct nfs4_state
*state
)
1110 struct nfs_delegation
*delegation
;
1111 struct nfs4_opendata
*opendata
;
1112 fmode_t delegation_type
= 0;
1115 opendata
= nfs4_open_recoverdata_alloc(ctx
, state
);
1116 if (IS_ERR(opendata
))
1117 return PTR_ERR(opendata
);
1118 opendata
->o_arg
.claim
= NFS4_OPEN_CLAIM_PREVIOUS
;
1119 opendata
->o_arg
.fh
= NFS_FH(state
->inode
);
1121 delegation
= rcu_dereference(NFS_I(state
->inode
)->delegation
);
1122 if (delegation
!= NULL
&& test_bit(NFS_DELEGATION_NEED_RECLAIM
, &delegation
->flags
) != 0)
1123 delegation_type
= delegation
->type
;
1125 opendata
->o_arg
.u
.delegation_type
= delegation_type
;
1126 status
= nfs4_open_recover(opendata
, state
);
1127 nfs4_opendata_put(opendata
);
1131 static int nfs4_do_open_reclaim(struct nfs_open_context
*ctx
, struct nfs4_state
*state
)
1133 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
1134 struct nfs4_exception exception
= { };
1137 err
= _nfs4_do_open_reclaim(ctx
, state
);
1138 if (err
!= -NFS4ERR_DELAY
)
1140 nfs4_handle_exception(server
, err
, &exception
);
1141 } while (exception
.retry
);
1145 static int nfs4_open_reclaim(struct nfs4_state_owner
*sp
, struct nfs4_state
*state
)
1147 struct nfs_open_context
*ctx
;
1150 ctx
= nfs4_state_find_open_context(state
);
1152 return PTR_ERR(ctx
);
1153 ret
= nfs4_do_open_reclaim(ctx
, state
);
1154 put_nfs_open_context(ctx
);
1158 static int _nfs4_open_delegation_recall(struct nfs_open_context
*ctx
, struct nfs4_state
*state
, const nfs4_stateid
*stateid
)
1160 struct nfs4_opendata
*opendata
;
1163 opendata
= nfs4_open_recoverdata_alloc(ctx
, state
);
1164 if (IS_ERR(opendata
))
1165 return PTR_ERR(opendata
);
1166 opendata
->o_arg
.claim
= NFS4_OPEN_CLAIM_DELEGATE_CUR
;
1167 memcpy(opendata
->o_arg
.u
.delegation
.data
, stateid
->data
,
1168 sizeof(opendata
->o_arg
.u
.delegation
.data
));
1169 ret
= nfs4_open_recover(opendata
, state
);
1170 nfs4_opendata_put(opendata
);
1174 int nfs4_open_delegation_recall(struct nfs_open_context
*ctx
, struct nfs4_state
*state
, const nfs4_stateid
*stateid
)
1176 struct nfs4_exception exception
= { };
1177 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
1180 err
= _nfs4_open_delegation_recall(ctx
, state
, stateid
);
1186 case -NFS4ERR_STALE_CLIENTID
:
1187 case -NFS4ERR_STALE_STATEID
:
1188 case -NFS4ERR_EXPIRED
:
1189 /* Don't recall a delegation if it was lost */
1190 nfs4_schedule_state_recovery(server
->nfs_client
);
1194 * The show must go on: exit, but mark the
1195 * stateid as needing recovery.
1197 case -NFS4ERR_ADMIN_REVOKED
:
1198 case -NFS4ERR_BAD_STATEID
:
1199 nfs4_state_mark_reclaim_nograce(server
->nfs_client
, state
);
1204 err
= nfs4_handle_exception(server
, err
, &exception
);
1205 } while (exception
.retry
);
1210 static void nfs4_open_confirm_done(struct rpc_task
*task
, void *calldata
)
1212 struct nfs4_opendata
*data
= calldata
;
1214 data
->rpc_status
= task
->tk_status
;
1215 if (RPC_ASSASSINATED(task
))
1217 if (data
->rpc_status
== 0) {
1218 memcpy(data
->o_res
.stateid
.data
, data
->c_res
.stateid
.data
,
1219 sizeof(data
->o_res
.stateid
.data
));
1220 nfs_confirm_seqid(&data
->owner
->so_seqid
, 0);
1221 renew_lease(data
->o_res
.server
, data
->timestamp
);
1226 static void nfs4_open_confirm_release(void *calldata
)
1228 struct nfs4_opendata
*data
= calldata
;
1229 struct nfs4_state
*state
= NULL
;
1231 /* If this request hasn't been cancelled, do nothing */
1232 if (data
->cancelled
== 0)
1234 /* In case of error, no cleanup! */
1235 if (!data
->rpc_done
)
1237 state
= nfs4_opendata_to_nfs4_state(data
);
1239 nfs4_close_state(&data
->path
, state
, data
->o_arg
.fmode
);
1241 nfs4_opendata_put(data
);
1244 static const struct rpc_call_ops nfs4_open_confirm_ops
= {
1245 .rpc_call_done
= nfs4_open_confirm_done
,
1246 .rpc_release
= nfs4_open_confirm_release
,
1250 * Note: On error, nfs4_proc_open_confirm will free the struct nfs4_opendata
1252 static int _nfs4_proc_open_confirm(struct nfs4_opendata
*data
)
1254 struct nfs_server
*server
= NFS_SERVER(data
->dir
->d_inode
);
1255 struct rpc_task
*task
;
1256 struct rpc_message msg
= {
1257 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_OPEN_CONFIRM
],
1258 .rpc_argp
= &data
->c_arg
,
1259 .rpc_resp
= &data
->c_res
,
1260 .rpc_cred
= data
->owner
->so_cred
,
1262 struct rpc_task_setup task_setup_data
= {
1263 .rpc_client
= server
->client
,
1264 .rpc_message
= &msg
,
1265 .callback_ops
= &nfs4_open_confirm_ops
,
1266 .callback_data
= data
,
1267 .workqueue
= nfsiod_workqueue
,
1268 .flags
= RPC_TASK_ASYNC
,
1272 kref_get(&data
->kref
);
1274 data
->rpc_status
= 0;
1275 data
->timestamp
= jiffies
;
1276 task
= rpc_run_task(&task_setup_data
);
1278 return PTR_ERR(task
);
1279 status
= nfs4_wait_for_completion_rpc_task(task
);
1281 data
->cancelled
= 1;
1284 status
= data
->rpc_status
;
1289 static void nfs4_open_prepare(struct rpc_task
*task
, void *calldata
)
1291 struct nfs4_opendata
*data
= calldata
;
1292 struct nfs4_state_owner
*sp
= data
->owner
;
1294 if (nfs_wait_on_sequence(data
->o_arg
.seqid
, task
) != 0)
1297 * Check if we still need to send an OPEN call, or if we can use
1298 * a delegation instead.
1300 if (data
->state
!= NULL
) {
1301 struct nfs_delegation
*delegation
;
1303 if (can_open_cached(data
->state
, data
->o_arg
.fmode
, data
->o_arg
.open_flags
))
1306 delegation
= rcu_dereference(NFS_I(data
->state
->inode
)->delegation
);
1307 if (delegation
!= NULL
&&
1308 test_bit(NFS_DELEGATION_NEED_RECLAIM
, &delegation
->flags
) == 0) {
1314 /* Update sequence id. */
1315 data
->o_arg
.id
= sp
->so_owner_id
.id
;
1316 data
->o_arg
.clientid
= sp
->so_client
->cl_clientid
;
1317 if (data
->o_arg
.claim
== NFS4_OPEN_CLAIM_PREVIOUS
) {
1318 task
->tk_msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_OPEN_NOATTR
];
1319 nfs_copy_fh(&data
->o_res
.fh
, data
->o_arg
.fh
);
1321 data
->timestamp
= jiffies
;
1322 if (nfs4_setup_sequence(data
->o_arg
.server
->nfs_client
,
1323 &data
->o_arg
.seq_args
,
1324 &data
->o_res
.seq_res
, 1, task
))
1326 rpc_call_start(task
);
1329 task
->tk_action
= NULL
;
1333 static void nfs4_open_done(struct rpc_task
*task
, void *calldata
)
1335 struct nfs4_opendata
*data
= calldata
;
1337 data
->rpc_status
= task
->tk_status
;
1339 nfs4_sequence_done_free_slot(data
->o_arg
.server
, &data
->o_res
.seq_res
,
1342 if (RPC_ASSASSINATED(task
))
1344 if (task
->tk_status
== 0) {
1345 switch (data
->o_res
.f_attr
->mode
& S_IFMT
) {
1349 data
->rpc_status
= -ELOOP
;
1352 data
->rpc_status
= -EISDIR
;
1355 data
->rpc_status
= -ENOTDIR
;
1357 renew_lease(data
->o_res
.server
, data
->timestamp
);
1358 if (!(data
->o_res
.rflags
& NFS4_OPEN_RESULT_CONFIRM
))
1359 nfs_confirm_seqid(&data
->owner
->so_seqid
, 0);
1364 static void nfs4_open_release(void *calldata
)
1366 struct nfs4_opendata
*data
= calldata
;
1367 struct nfs4_state
*state
= NULL
;
1369 /* If this request hasn't been cancelled, do nothing */
1370 if (data
->cancelled
== 0)
1372 /* In case of error, no cleanup! */
1373 if (data
->rpc_status
!= 0 || !data
->rpc_done
)
1375 /* In case we need an open_confirm, no cleanup! */
1376 if (data
->o_res
.rflags
& NFS4_OPEN_RESULT_CONFIRM
)
1378 state
= nfs4_opendata_to_nfs4_state(data
);
1380 nfs4_close_state(&data
->path
, state
, data
->o_arg
.fmode
);
1382 nfs4_opendata_put(data
);
1385 static const struct rpc_call_ops nfs4_open_ops
= {
1386 .rpc_call_prepare
= nfs4_open_prepare
,
1387 .rpc_call_done
= nfs4_open_done
,
1388 .rpc_release
= nfs4_open_release
,
1392 * Note: On error, nfs4_proc_open will free the struct nfs4_opendata
1394 static int _nfs4_proc_open(struct nfs4_opendata
*data
)
1396 struct inode
*dir
= data
->dir
->d_inode
;
1397 struct nfs_server
*server
= NFS_SERVER(dir
);
1398 struct nfs_openargs
*o_arg
= &data
->o_arg
;
1399 struct nfs_openres
*o_res
= &data
->o_res
;
1400 struct rpc_task
*task
;
1401 struct rpc_message msg
= {
1402 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_OPEN
],
1405 .rpc_cred
= data
->owner
->so_cred
,
1407 struct rpc_task_setup task_setup_data
= {
1408 .rpc_client
= server
->client
,
1409 .rpc_message
= &msg
,
1410 .callback_ops
= &nfs4_open_ops
,
1411 .callback_data
= data
,
1412 .workqueue
= nfsiod_workqueue
,
1413 .flags
= RPC_TASK_ASYNC
,
1417 kref_get(&data
->kref
);
1419 data
->rpc_status
= 0;
1420 data
->cancelled
= 0;
1421 task
= rpc_run_task(&task_setup_data
);
1423 return PTR_ERR(task
);
1424 status
= nfs4_wait_for_completion_rpc_task(task
);
1426 data
->cancelled
= 1;
1429 status
= data
->rpc_status
;
1431 if (status
!= 0 || !data
->rpc_done
)
1434 if (o_res
->fh
.size
== 0)
1435 _nfs4_proc_lookup(dir
, o_arg
->name
, &o_res
->fh
, o_res
->f_attr
);
1437 if (o_arg
->open_flags
& O_CREAT
) {
1438 update_changeattr(dir
, &o_res
->cinfo
);
1439 nfs_post_op_update_inode(dir
, o_res
->dir_attr
);
1441 nfs_refresh_inode(dir
, o_res
->dir_attr
);
1442 if(o_res
->rflags
& NFS4_OPEN_RESULT_CONFIRM
) {
1443 status
= _nfs4_proc_open_confirm(data
);
1447 if (!(o_res
->f_attr
->valid
& NFS_ATTR_FATTR
))
1448 _nfs4_proc_getattr(server
, &o_res
->fh
, o_res
->f_attr
);
1452 static int nfs4_recover_expired_lease(struct nfs_server
*server
)
1454 struct nfs_client
*clp
= server
->nfs_client
;
1458 for (loop
= NFS4_MAX_LOOP_ON_RECOVER
; loop
!= 0; loop
--) {
1459 ret
= nfs4_wait_clnt_recover(clp
);
1462 if (!test_bit(NFS4CLNT_LEASE_EXPIRED
, &clp
->cl_state
) &&
1463 !test_bit(NFS4CLNT_CHECK_LEASE
,&clp
->cl_state
))
1465 nfs4_schedule_state_recovery(clp
);
1473 * reclaim state on the server after a network partition.
1474 * Assumes caller holds the appropriate lock
1476 static int _nfs4_open_expired(struct nfs_open_context
*ctx
, struct nfs4_state
*state
)
1478 struct nfs4_opendata
*opendata
;
1481 opendata
= nfs4_open_recoverdata_alloc(ctx
, state
);
1482 if (IS_ERR(opendata
))
1483 return PTR_ERR(opendata
);
1484 ret
= nfs4_open_recover(opendata
, state
);
1486 d_drop(ctx
->path
.dentry
);
1487 nfs4_opendata_put(opendata
);
1491 static inline int nfs4_do_open_expired(struct nfs_open_context
*ctx
, struct nfs4_state
*state
)
1493 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
1494 struct nfs4_exception exception
= { };
1498 err
= _nfs4_open_expired(ctx
, state
);
1499 if (err
!= -NFS4ERR_DELAY
)
1501 nfs4_handle_exception(server
, err
, &exception
);
1502 } while (exception
.retry
);
1506 static int nfs4_open_expired(struct nfs4_state_owner
*sp
, struct nfs4_state
*state
)
1508 struct nfs_open_context
*ctx
;
1511 ctx
= nfs4_state_find_open_context(state
);
1513 return PTR_ERR(ctx
);
1514 ret
= nfs4_do_open_expired(ctx
, state
);
1515 put_nfs_open_context(ctx
);
1520 * on an EXCLUSIVE create, the server should send back a bitmask with FATTR4-*
1521 * fields corresponding to attributes that were used to store the verifier.
1522 * Make sure we clobber those fields in the later setattr call
1524 static inline void nfs4_exclusive_attrset(struct nfs4_opendata
*opendata
, struct iattr
*sattr
)
1526 if ((opendata
->o_res
.attrset
[1] & FATTR4_WORD1_TIME_ACCESS
) &&
1527 !(sattr
->ia_valid
& ATTR_ATIME_SET
))
1528 sattr
->ia_valid
|= ATTR_ATIME
;
1530 if ((opendata
->o_res
.attrset
[1] & FATTR4_WORD1_TIME_MODIFY
) &&
1531 !(sattr
->ia_valid
& ATTR_MTIME_SET
))
1532 sattr
->ia_valid
|= ATTR_MTIME
;
1536 * Returns a referenced nfs4_state
1538 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
)
1540 struct nfs4_state_owner
*sp
;
1541 struct nfs4_state
*state
= NULL
;
1542 struct nfs_server
*server
= NFS_SERVER(dir
);
1543 struct nfs4_opendata
*opendata
;
1546 /* Protect against reboot recovery conflicts */
1548 if (!(sp
= nfs4_get_state_owner(server
, cred
))) {
1549 dprintk("nfs4_do_open: nfs4_get_state_owner failed!\n");
1552 status
= nfs4_recover_expired_lease(server
);
1554 goto err_put_state_owner
;
1555 if (path
->dentry
->d_inode
!= NULL
)
1556 nfs4_return_incompatible_delegation(path
->dentry
->d_inode
, fmode
);
1558 opendata
= nfs4_opendata_alloc(path
, sp
, fmode
, flags
, sattr
);
1559 if (opendata
== NULL
)
1560 goto err_put_state_owner
;
1562 if (path
->dentry
->d_inode
!= NULL
)
1563 opendata
->state
= nfs4_get_open_state(path
->dentry
->d_inode
, sp
);
1565 status
= _nfs4_proc_open(opendata
);
1567 goto err_opendata_put
;
1569 if (opendata
->o_arg
.open_flags
& O_EXCL
)
1570 nfs4_exclusive_attrset(opendata
, sattr
);
1572 state
= nfs4_opendata_to_nfs4_state(opendata
);
1573 status
= PTR_ERR(state
);
1575 goto err_opendata_put
;
1576 if ((opendata
->o_res
.rflags
& NFS4_OPEN_RESULT_LOCKTYPE_POSIX
) != 0)
1577 set_bit(NFS_STATE_POSIX_LOCKS
, &state
->flags
);
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_done(struct rpc_task
*task
, void *data
)
1719 struct nfs4_closedata
*calldata
= data
;
1720 struct nfs4_state
*state
= calldata
->state
;
1721 struct nfs_server
*server
= NFS_SERVER(calldata
->inode
);
1723 nfs4_sequence_done(server
, &calldata
->res
.seq_res
, task
->tk_status
);
1724 if (RPC_ASSASSINATED(task
))
1726 /* hmm. we are done with the inode, and in the process of freeing
1727 * the state_owner. we keep this around to process errors
1729 switch (task
->tk_status
) {
1731 nfs_set_open_stateid(state
, &calldata
->res
.stateid
, 0);
1732 renew_lease(server
, calldata
->timestamp
);
1734 case -NFS4ERR_STALE_STATEID
:
1735 case -NFS4ERR_OLD_STATEID
:
1736 case -NFS4ERR_BAD_STATEID
:
1737 case -NFS4ERR_EXPIRED
:
1738 if (calldata
->arg
.fmode
== 0)
1741 if (nfs4_async_handle_error(task
, server
, state
) == -EAGAIN
) {
1742 nfs4_restart_rpc(task
, server
->nfs_client
);
1746 nfs4_sequence_free_slot(server
->nfs_client
, &calldata
->res
.seq_res
);
1747 nfs_refresh_inode(calldata
->inode
, calldata
->res
.fattr
);
1750 static void nfs4_close_prepare(struct rpc_task
*task
, void *data
)
1752 struct nfs4_closedata
*calldata
= data
;
1753 struct nfs4_state
*state
= calldata
->state
;
1754 int clear_rd
, clear_wr
, clear_rdwr
;
1756 if (nfs_wait_on_sequence(calldata
->arg
.seqid
, task
) != 0)
1759 clear_rd
= clear_wr
= clear_rdwr
= 0;
1760 spin_lock(&state
->owner
->so_lock
);
1761 /* Calculate the change in open mode */
1762 if (state
->n_rdwr
== 0) {
1763 if (state
->n_rdonly
== 0) {
1764 clear_rd
|= test_and_clear_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
1765 clear_rdwr
|= test_and_clear_bit(NFS_O_RDWR_STATE
, &state
->flags
);
1767 if (state
->n_wronly
== 0) {
1768 clear_wr
|= test_and_clear_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
1769 clear_rdwr
|= test_and_clear_bit(NFS_O_RDWR_STATE
, &state
->flags
);
1772 spin_unlock(&state
->owner
->so_lock
);
1773 if (!clear_rd
&& !clear_wr
&& !clear_rdwr
) {
1774 /* Note: exit _without_ calling nfs4_close_done */
1775 task
->tk_action
= NULL
;
1778 nfs_fattr_init(calldata
->res
.fattr
);
1779 if (test_bit(NFS_O_RDONLY_STATE
, &state
->flags
) != 0) {
1780 task
->tk_msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_OPEN_DOWNGRADE
];
1781 calldata
->arg
.fmode
= FMODE_READ
;
1782 } else if (test_bit(NFS_O_WRONLY_STATE
, &state
->flags
) != 0) {
1783 task
->tk_msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_OPEN_DOWNGRADE
];
1784 calldata
->arg
.fmode
= FMODE_WRITE
;
1786 calldata
->timestamp
= jiffies
;
1787 if (nfs4_setup_sequence((NFS_SERVER(calldata
->inode
))->nfs_client
,
1788 &calldata
->arg
.seq_args
, &calldata
->res
.seq_res
,
1791 rpc_call_start(task
);
1794 static const struct rpc_call_ops nfs4_close_ops
= {
1795 .rpc_call_prepare
= nfs4_close_prepare
,
1796 .rpc_call_done
= nfs4_close_done
,
1797 .rpc_release
= nfs4_free_closedata
,
1801 * It is possible for data to be read/written from a mem-mapped file
1802 * after the sys_close call (which hits the vfs layer as a flush).
1803 * This means that we can't safely call nfsv4 close on a file until
1804 * the inode is cleared. This in turn means that we are not good
1805 * NFSv4 citizens - we do not indicate to the server to update the file's
1806 * share state even when we are done with one of the three share
1807 * stateid's in the inode.
1809 * NOTE: Caller must be holding the sp->so_owner semaphore!
1811 int nfs4_do_close(struct path
*path
, struct nfs4_state
*state
, int wait
)
1813 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
1814 struct nfs4_closedata
*calldata
;
1815 struct nfs4_state_owner
*sp
= state
->owner
;
1816 struct rpc_task
*task
;
1817 struct rpc_message msg
= {
1818 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_CLOSE
],
1819 .rpc_cred
= state
->owner
->so_cred
,
1821 struct rpc_task_setup task_setup_data
= {
1822 .rpc_client
= server
->client
,
1823 .rpc_message
= &msg
,
1824 .callback_ops
= &nfs4_close_ops
,
1825 .workqueue
= nfsiod_workqueue
,
1826 .flags
= RPC_TASK_ASYNC
,
1828 int status
= -ENOMEM
;
1830 calldata
= kzalloc(sizeof(*calldata
), GFP_KERNEL
);
1831 if (calldata
== NULL
)
1833 calldata
->inode
= state
->inode
;
1834 calldata
->state
= state
;
1835 calldata
->arg
.fh
= NFS_FH(state
->inode
);
1836 calldata
->arg
.stateid
= &state
->open_stateid
;
1837 if (nfs4_has_session(server
->nfs_client
))
1838 memset(calldata
->arg
.stateid
->data
, 0, 4); /* clear seqid */
1839 /* Serialization for the sequence id */
1840 calldata
->arg
.seqid
= nfs_alloc_seqid(&state
->owner
->so_seqid
);
1841 if (calldata
->arg
.seqid
== NULL
)
1842 goto out_free_calldata
;
1843 calldata
->arg
.fmode
= 0;
1844 calldata
->arg
.bitmask
= server
->cache_consistency_bitmask
;
1845 calldata
->res
.fattr
= &calldata
->fattr
;
1846 calldata
->res
.seqid
= calldata
->arg
.seqid
;
1847 calldata
->res
.server
= server
;
1848 calldata
->res
.seq_res
.sr_slotid
= NFS4_MAX_SLOT_TABLE
;
1849 calldata
->path
.mnt
= mntget(path
->mnt
);
1850 calldata
->path
.dentry
= dget(path
->dentry
);
1852 msg
.rpc_argp
= &calldata
->arg
,
1853 msg
.rpc_resp
= &calldata
->res
,
1854 task_setup_data
.callback_data
= calldata
;
1855 task
= rpc_run_task(&task_setup_data
);
1857 return PTR_ERR(task
);
1860 status
= rpc_wait_for_completion_task(task
);
1866 nfs4_put_open_state(state
);
1867 nfs4_put_state_owner(sp
);
1871 static int nfs4_intent_set_file(struct nameidata
*nd
, struct path
*path
, struct nfs4_state
*state
, fmode_t fmode
)
1876 /* If the open_intent is for execute, we have an extra check to make */
1877 if (fmode
& FMODE_EXEC
) {
1878 ret
= nfs_may_open(state
->inode
,
1879 state
->owner
->so_cred
,
1880 nd
->intent
.open
.flags
);
1884 filp
= lookup_instantiate_filp(nd
, path
->dentry
, NULL
);
1885 if (!IS_ERR(filp
)) {
1886 struct nfs_open_context
*ctx
;
1887 ctx
= nfs_file_open_context(filp
);
1891 ret
= PTR_ERR(filp
);
1893 nfs4_close_sync(path
, state
, fmode
& (FMODE_READ
|FMODE_WRITE
));
1898 nfs4_atomic_open(struct inode
*dir
, struct dentry
*dentry
, struct nameidata
*nd
)
1900 struct path path
= {
1901 .mnt
= nd
->path
.mnt
,
1904 struct dentry
*parent
;
1906 struct rpc_cred
*cred
;
1907 struct nfs4_state
*state
;
1909 fmode_t fmode
= nd
->intent
.open
.flags
& (FMODE_READ
| FMODE_WRITE
| FMODE_EXEC
);
1911 if (nd
->flags
& LOOKUP_CREATE
) {
1912 attr
.ia_mode
= nd
->intent
.open
.create_mode
;
1913 attr
.ia_valid
= ATTR_MODE
;
1914 if (!IS_POSIXACL(dir
))
1915 attr
.ia_mode
&= ~current_umask();
1918 BUG_ON(nd
->intent
.open
.flags
& O_CREAT
);
1921 cred
= rpc_lookup_cred();
1923 return (struct dentry
*)cred
;
1924 parent
= dentry
->d_parent
;
1925 /* Protect against concurrent sillydeletes */
1926 nfs_block_sillyrename(parent
);
1927 state
= nfs4_do_open(dir
, &path
, fmode
, nd
->intent
.open
.flags
, &attr
, cred
);
1929 if (IS_ERR(state
)) {
1930 if (PTR_ERR(state
) == -ENOENT
) {
1931 d_add(dentry
, NULL
);
1932 nfs_set_verifier(dentry
, nfs_save_change_attribute(dir
));
1934 nfs_unblock_sillyrename(parent
);
1935 return (struct dentry
*)state
;
1937 res
= d_add_unique(dentry
, igrab(state
->inode
));
1940 nfs_set_verifier(path
.dentry
, nfs_save_change_attribute(dir
));
1941 nfs_unblock_sillyrename(parent
);
1942 nfs4_intent_set_file(nd
, &path
, state
, fmode
);
1947 nfs4_open_revalidate(struct inode
*dir
, struct dentry
*dentry
, int openflags
, struct nameidata
*nd
)
1949 struct path path
= {
1950 .mnt
= nd
->path
.mnt
,
1953 struct rpc_cred
*cred
;
1954 struct nfs4_state
*state
;
1955 fmode_t fmode
= openflags
& (FMODE_READ
| FMODE_WRITE
);
1957 cred
= rpc_lookup_cred();
1959 return PTR_ERR(cred
);
1960 state
= nfs4_do_open(dir
, &path
, fmode
, openflags
, NULL
, cred
);
1962 if (IS_ERR(state
)) {
1963 switch (PTR_ERR(state
)) {
1969 lookup_instantiate_filp(nd
, (struct dentry
*)state
, NULL
);
1975 if (state
->inode
== dentry
->d_inode
) {
1976 nfs_set_verifier(dentry
, nfs_save_change_attribute(dir
));
1977 nfs4_intent_set_file(nd
, &path
, state
, fmode
);
1980 nfs4_close_sync(&path
, state
, fmode
);
1986 void nfs4_close_context(struct nfs_open_context
*ctx
, int is_sync
)
1988 if (ctx
->state
== NULL
)
1991 nfs4_close_sync(&ctx
->path
, ctx
->state
, ctx
->mode
);
1993 nfs4_close_state(&ctx
->path
, ctx
->state
, ctx
->mode
);
1996 static int _nfs4_server_capabilities(struct nfs_server
*server
, struct nfs_fh
*fhandle
)
1998 struct nfs4_server_caps_arg args
= {
2001 struct nfs4_server_caps_res res
= {};
2002 struct rpc_message msg
= {
2003 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SERVER_CAPS
],
2009 status
= nfs4_call_sync(server
, &msg
, &args
, &res
, 0);
2011 memcpy(server
->attr_bitmask
, res
.attr_bitmask
, sizeof(server
->attr_bitmask
));
2012 server
->caps
&= ~(NFS_CAP_ACLS
|NFS_CAP_HARDLINKS
|
2013 NFS_CAP_SYMLINKS
|NFS_CAP_FILEID
|
2014 NFS_CAP_MODE
|NFS_CAP_NLINK
|NFS_CAP_OWNER
|
2015 NFS_CAP_OWNER_GROUP
|NFS_CAP_ATIME
|
2016 NFS_CAP_CTIME
|NFS_CAP_MTIME
);
2017 if (res
.attr_bitmask
[0] & FATTR4_WORD0_ACL
)
2018 server
->caps
|= NFS_CAP_ACLS
;
2019 if (res
.has_links
!= 0)
2020 server
->caps
|= NFS_CAP_HARDLINKS
;
2021 if (res
.has_symlinks
!= 0)
2022 server
->caps
|= NFS_CAP_SYMLINKS
;
2023 if (res
.attr_bitmask
[0] & FATTR4_WORD0_FILEID
)
2024 server
->caps
|= NFS_CAP_FILEID
;
2025 if (res
.attr_bitmask
[1] & FATTR4_WORD1_MODE
)
2026 server
->caps
|= NFS_CAP_MODE
;
2027 if (res
.attr_bitmask
[1] & FATTR4_WORD1_NUMLINKS
)
2028 server
->caps
|= NFS_CAP_NLINK
;
2029 if (res
.attr_bitmask
[1] & FATTR4_WORD1_OWNER
)
2030 server
->caps
|= NFS_CAP_OWNER
;
2031 if (res
.attr_bitmask
[1] & FATTR4_WORD1_OWNER_GROUP
)
2032 server
->caps
|= NFS_CAP_OWNER_GROUP
;
2033 if (res
.attr_bitmask
[1] & FATTR4_WORD1_TIME_ACCESS
)
2034 server
->caps
|= NFS_CAP_ATIME
;
2035 if (res
.attr_bitmask
[1] & FATTR4_WORD1_TIME_METADATA
)
2036 server
->caps
|= NFS_CAP_CTIME
;
2037 if (res
.attr_bitmask
[1] & FATTR4_WORD1_TIME_MODIFY
)
2038 server
->caps
|= NFS_CAP_MTIME
;
2040 memcpy(server
->cache_consistency_bitmask
, res
.attr_bitmask
, sizeof(server
->cache_consistency_bitmask
));
2041 server
->cache_consistency_bitmask
[0] &= FATTR4_WORD0_CHANGE
|FATTR4_WORD0_SIZE
;
2042 server
->cache_consistency_bitmask
[1] &= FATTR4_WORD1_TIME_METADATA
|FATTR4_WORD1_TIME_MODIFY
;
2043 server
->acl_bitmask
= res
.acl_bitmask
;
2049 int nfs4_server_capabilities(struct nfs_server
*server
, struct nfs_fh
*fhandle
)
2051 struct nfs4_exception exception
= { };
2054 err
= nfs4_handle_exception(server
,
2055 _nfs4_server_capabilities(server
, fhandle
),
2057 } while (exception
.retry
);
2061 static int _nfs4_lookup_root(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
2062 struct nfs_fsinfo
*info
)
2064 struct nfs4_lookup_root_arg args
= {
2065 .bitmask
= nfs4_fattr_bitmap
,
2067 struct nfs4_lookup_res res
= {
2069 .fattr
= info
->fattr
,
2072 struct rpc_message msg
= {
2073 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOOKUP_ROOT
],
2078 nfs_fattr_init(info
->fattr
);
2079 return nfs4_call_sync(server
, &msg
, &args
, &res
, 0);
2082 static int nfs4_lookup_root(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
2083 struct nfs_fsinfo
*info
)
2085 struct nfs4_exception exception
= { };
2088 err
= nfs4_handle_exception(server
,
2089 _nfs4_lookup_root(server
, fhandle
, info
),
2091 } while (exception
.retry
);
2096 * get the file handle for the "/" directory on the server
2098 static int nfs4_proc_get_root(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
2099 struct nfs_fsinfo
*info
)
2103 status
= nfs4_lookup_root(server
, fhandle
, info
);
2105 status
= nfs4_server_capabilities(server
, fhandle
);
2107 status
= nfs4_do_fsinfo(server
, fhandle
, info
);
2108 return nfs4_map_errors(status
);
2112 * Get locations and (maybe) other attributes of a referral.
2113 * Note that we'll actually follow the referral later when
2114 * we detect fsid mismatch in inode revalidation
2116 static int nfs4_get_referral(struct inode
*dir
, const struct qstr
*name
, struct nfs_fattr
*fattr
, struct nfs_fh
*fhandle
)
2118 int status
= -ENOMEM
;
2119 struct page
*page
= NULL
;
2120 struct nfs4_fs_locations
*locations
= NULL
;
2122 page
= alloc_page(GFP_KERNEL
);
2125 locations
= kmalloc(sizeof(struct nfs4_fs_locations
), GFP_KERNEL
);
2126 if (locations
== NULL
)
2129 status
= nfs4_proc_fs_locations(dir
, name
, locations
, page
);
2132 /* Make sure server returned a different fsid for the referral */
2133 if (nfs_fsid_equal(&NFS_SERVER(dir
)->fsid
, &locations
->fattr
.fsid
)) {
2134 dprintk("%s: server did not return a different fsid for a referral at %s\n", __func__
, name
->name
);
2139 memcpy(fattr
, &locations
->fattr
, sizeof(struct nfs_fattr
));
2140 fattr
->valid
|= NFS_ATTR_FATTR_V4_REFERRAL
;
2142 fattr
->mode
= S_IFDIR
;
2143 memset(fhandle
, 0, sizeof(struct nfs_fh
));
2152 static int _nfs4_proc_getattr(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fattr
*fattr
)
2154 struct nfs4_getattr_arg args
= {
2156 .bitmask
= server
->attr_bitmask
,
2158 struct nfs4_getattr_res res
= {
2162 struct rpc_message msg
= {
2163 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GETATTR
],
2168 nfs_fattr_init(fattr
);
2169 return nfs4_call_sync(server
, &msg
, &args
, &res
, 0);
2172 static int nfs4_proc_getattr(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fattr
*fattr
)
2174 struct nfs4_exception exception
= { };
2177 err
= nfs4_handle_exception(server
,
2178 _nfs4_proc_getattr(server
, fhandle
, fattr
),
2180 } while (exception
.retry
);
2185 * The file is not closed if it is opened due to the a request to change
2186 * the size of the file. The open call will not be needed once the
2187 * VFS layer lookup-intents are implemented.
2189 * Close is called when the inode is destroyed.
2190 * If we haven't opened the file for O_WRONLY, we
2191 * need to in the size_change case to obtain a stateid.
2194 * Because OPEN is always done by name in nfsv4, it is
2195 * possible that we opened a different file by the same
2196 * name. We can recognize this race condition, but we
2197 * can't do anything about it besides returning an error.
2199 * This will be fixed with VFS changes (lookup-intent).
2202 nfs4_proc_setattr(struct dentry
*dentry
, struct nfs_fattr
*fattr
,
2203 struct iattr
*sattr
)
2205 struct inode
*inode
= dentry
->d_inode
;
2206 struct rpc_cred
*cred
= NULL
;
2207 struct nfs4_state
*state
= NULL
;
2210 nfs_fattr_init(fattr
);
2212 /* Search for an existing open(O_WRITE) file */
2213 if (sattr
->ia_valid
& ATTR_FILE
) {
2214 struct nfs_open_context
*ctx
;
2216 ctx
= nfs_file_open_context(sattr
->ia_file
);
2223 status
= nfs4_do_setattr(inode
, cred
, fattr
, sattr
, state
);
2225 nfs_setattr_update_inode(inode
, sattr
);
2229 static int _nfs4_proc_lookupfh(struct nfs_server
*server
, const struct nfs_fh
*dirfh
,
2230 const struct qstr
*name
, struct nfs_fh
*fhandle
,
2231 struct nfs_fattr
*fattr
)
2234 struct nfs4_lookup_arg args
= {
2235 .bitmask
= server
->attr_bitmask
,
2239 struct nfs4_lookup_res res
= {
2244 struct rpc_message msg
= {
2245 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOOKUP
],
2250 nfs_fattr_init(fattr
);
2252 dprintk("NFS call lookupfh %s\n", name
->name
);
2253 status
= nfs4_call_sync(server
, &msg
, &args
, &res
, 0);
2254 dprintk("NFS reply lookupfh: %d\n", status
);
2258 static int nfs4_proc_lookupfh(struct nfs_server
*server
, struct nfs_fh
*dirfh
,
2259 struct qstr
*name
, struct nfs_fh
*fhandle
,
2260 struct nfs_fattr
*fattr
)
2262 struct nfs4_exception exception
= { };
2265 err
= _nfs4_proc_lookupfh(server
, dirfh
, name
, fhandle
, fattr
);
2267 if (err
== -NFS4ERR_MOVED
) {
2271 err
= nfs4_handle_exception(server
, err
, &exception
);
2272 } while (exception
.retry
);
2276 static int _nfs4_proc_lookup(struct inode
*dir
, const struct qstr
*name
,
2277 struct nfs_fh
*fhandle
, struct nfs_fattr
*fattr
)
2281 dprintk("NFS call lookup %s\n", name
->name
);
2282 status
= _nfs4_proc_lookupfh(NFS_SERVER(dir
), NFS_FH(dir
), name
, fhandle
, fattr
);
2283 if (status
== -NFS4ERR_MOVED
)
2284 status
= nfs4_get_referral(dir
, name
, fattr
, fhandle
);
2285 dprintk("NFS reply lookup: %d\n", status
);
2289 static int nfs4_proc_lookup(struct inode
*dir
, struct qstr
*name
, struct nfs_fh
*fhandle
, struct nfs_fattr
*fattr
)
2291 struct nfs4_exception exception
= { };
2294 err
= nfs4_handle_exception(NFS_SERVER(dir
),
2295 _nfs4_proc_lookup(dir
, name
, fhandle
, fattr
),
2297 } while (exception
.retry
);
2301 static int _nfs4_proc_access(struct inode
*inode
, struct nfs_access_entry
*entry
)
2303 struct nfs_server
*server
= NFS_SERVER(inode
);
2304 struct nfs_fattr fattr
;
2305 struct nfs4_accessargs args
= {
2306 .fh
= NFS_FH(inode
),
2307 .bitmask
= server
->attr_bitmask
,
2309 struct nfs4_accessres res
= {
2313 struct rpc_message msg
= {
2314 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_ACCESS
],
2317 .rpc_cred
= entry
->cred
,
2319 int mode
= entry
->mask
;
2323 * Determine which access bits we want to ask for...
2325 if (mode
& MAY_READ
)
2326 args
.access
|= NFS4_ACCESS_READ
;
2327 if (S_ISDIR(inode
->i_mode
)) {
2328 if (mode
& MAY_WRITE
)
2329 args
.access
|= NFS4_ACCESS_MODIFY
| NFS4_ACCESS_EXTEND
| NFS4_ACCESS_DELETE
;
2330 if (mode
& MAY_EXEC
)
2331 args
.access
|= NFS4_ACCESS_LOOKUP
;
2333 if (mode
& MAY_WRITE
)
2334 args
.access
|= NFS4_ACCESS_MODIFY
| NFS4_ACCESS_EXTEND
;
2335 if (mode
& MAY_EXEC
)
2336 args
.access
|= NFS4_ACCESS_EXECUTE
;
2338 nfs_fattr_init(&fattr
);
2339 status
= nfs4_call_sync(server
, &msg
, &args
, &res
, 0);
2342 if (res
.access
& NFS4_ACCESS_READ
)
2343 entry
->mask
|= MAY_READ
;
2344 if (res
.access
& (NFS4_ACCESS_MODIFY
| NFS4_ACCESS_EXTEND
| NFS4_ACCESS_DELETE
))
2345 entry
->mask
|= MAY_WRITE
;
2346 if (res
.access
& (NFS4_ACCESS_LOOKUP
|NFS4_ACCESS_EXECUTE
))
2347 entry
->mask
|= MAY_EXEC
;
2348 nfs_refresh_inode(inode
, &fattr
);
2353 static int nfs4_proc_access(struct inode
*inode
, struct nfs_access_entry
*entry
)
2355 struct nfs4_exception exception
= { };
2358 err
= nfs4_handle_exception(NFS_SERVER(inode
),
2359 _nfs4_proc_access(inode
, entry
),
2361 } while (exception
.retry
);
2366 * TODO: For the time being, we don't try to get any attributes
2367 * along with any of the zero-copy operations READ, READDIR,
2370 * In the case of the first three, we want to put the GETATTR
2371 * after the read-type operation -- this is because it is hard
2372 * to predict the length of a GETATTR response in v4, and thus
2373 * align the READ data correctly. This means that the GETATTR
2374 * may end up partially falling into the page cache, and we should
2375 * shift it into the 'tail' of the xdr_buf before processing.
2376 * To do this efficiently, we need to know the total length
2377 * of data received, which doesn't seem to be available outside
2380 * In the case of WRITE, we also want to put the GETATTR after
2381 * the operation -- in this case because we want to make sure
2382 * we get the post-operation mtime and size. This means that
2383 * we can't use xdr_encode_pages() as written: we need a variant
2384 * of it which would leave room in the 'tail' iovec.
2386 * Both of these changes to the XDR layer would in fact be quite
2387 * minor, but I decided to leave them for a subsequent patch.
2389 static int _nfs4_proc_readlink(struct inode
*inode
, struct page
*page
,
2390 unsigned int pgbase
, unsigned int pglen
)
2392 struct nfs4_readlink args
= {
2393 .fh
= NFS_FH(inode
),
2398 struct nfs4_readlink_res res
;
2399 struct rpc_message msg
= {
2400 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_READLINK
],
2405 return nfs4_call_sync(NFS_SERVER(inode
), &msg
, &args
, &res
, 0);
2408 static int nfs4_proc_readlink(struct inode
*inode
, struct page
*page
,
2409 unsigned int pgbase
, unsigned int pglen
)
2411 struct nfs4_exception exception
= { };
2414 err
= nfs4_handle_exception(NFS_SERVER(inode
),
2415 _nfs4_proc_readlink(inode
, page
, pgbase
, pglen
),
2417 } while (exception
.retry
);
2423 * We will need to arrange for the VFS layer to provide an atomic open.
2424 * Until then, this create/open method is prone to inefficiency and race
2425 * conditions due to the lookup, create, and open VFS calls from sys_open()
2426 * placed on the wire.
2428 * Given the above sorry state of affairs, I'm simply sending an OPEN.
2429 * The file will be opened again in the subsequent VFS open call
2430 * (nfs4_proc_file_open).
2432 * The open for read will just hang around to be used by any process that
2433 * opens the file O_RDONLY. This will all be resolved with the VFS changes.
2437 nfs4_proc_create(struct inode
*dir
, struct dentry
*dentry
, struct iattr
*sattr
,
2438 int flags
, struct nameidata
*nd
)
2440 struct path path
= {
2441 .mnt
= nd
->path
.mnt
,
2444 struct nfs4_state
*state
;
2445 struct rpc_cred
*cred
;
2446 fmode_t fmode
= flags
& (FMODE_READ
| FMODE_WRITE
);
2449 cred
= rpc_lookup_cred();
2451 status
= PTR_ERR(cred
);
2454 state
= nfs4_do_open(dir
, &path
, fmode
, flags
, sattr
, cred
);
2456 if (IS_ERR(state
)) {
2457 status
= PTR_ERR(state
);
2460 d_add(dentry
, igrab(state
->inode
));
2461 nfs_set_verifier(dentry
, nfs_save_change_attribute(dir
));
2462 if (flags
& O_EXCL
) {
2463 struct nfs_fattr fattr
;
2464 status
= nfs4_do_setattr(state
->inode
, cred
, &fattr
, sattr
, state
);
2466 nfs_setattr_update_inode(state
->inode
, sattr
);
2467 nfs_post_op_update_inode(state
->inode
, &fattr
);
2469 if (status
== 0 && (nd
->flags
& LOOKUP_OPEN
) != 0)
2470 status
= nfs4_intent_set_file(nd
, &path
, state
, fmode
);
2472 nfs4_close_sync(&path
, state
, fmode
);
2479 static int _nfs4_proc_remove(struct inode
*dir
, struct qstr
*name
)
2481 struct nfs_server
*server
= NFS_SERVER(dir
);
2482 struct nfs_removeargs args
= {
2484 .name
.len
= name
->len
,
2485 .name
.name
= name
->name
,
2486 .bitmask
= server
->attr_bitmask
,
2488 struct nfs_removeres res
= {
2491 struct rpc_message msg
= {
2492 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_REMOVE
],
2498 nfs_fattr_init(&res
.dir_attr
);
2499 status
= nfs4_call_sync(server
, &msg
, &args
, &res
, 1);
2501 update_changeattr(dir
, &res
.cinfo
);
2502 nfs_post_op_update_inode(dir
, &res
.dir_attr
);
2507 static int nfs4_proc_remove(struct inode
*dir
, struct qstr
*name
)
2509 struct nfs4_exception exception
= { };
2512 err
= nfs4_handle_exception(NFS_SERVER(dir
),
2513 _nfs4_proc_remove(dir
, name
),
2515 } while (exception
.retry
);
2519 static void nfs4_proc_unlink_setup(struct rpc_message
*msg
, struct inode
*dir
)
2521 struct nfs_server
*server
= NFS_SERVER(dir
);
2522 struct nfs_removeargs
*args
= msg
->rpc_argp
;
2523 struct nfs_removeres
*res
= msg
->rpc_resp
;
2525 args
->bitmask
= server
->cache_consistency_bitmask
;
2526 res
->server
= server
;
2527 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_REMOVE
];
2530 static int nfs4_proc_unlink_done(struct rpc_task
*task
, struct inode
*dir
)
2532 struct nfs_removeres
*res
= task
->tk_msg
.rpc_resp
;
2534 nfs4_sequence_done(res
->server
, &res
->seq_res
, task
->tk_status
);
2535 if (nfs4_async_handle_error(task
, res
->server
, NULL
) == -EAGAIN
)
2537 nfs4_sequence_free_slot(res
->server
->nfs_client
, &res
->seq_res
);
2538 update_changeattr(dir
, &res
->cinfo
);
2539 nfs_post_op_update_inode(dir
, &res
->dir_attr
);
2543 static int _nfs4_proc_rename(struct inode
*old_dir
, struct qstr
*old_name
,
2544 struct inode
*new_dir
, struct qstr
*new_name
)
2546 struct nfs_server
*server
= NFS_SERVER(old_dir
);
2547 struct nfs4_rename_arg arg
= {
2548 .old_dir
= NFS_FH(old_dir
),
2549 .new_dir
= NFS_FH(new_dir
),
2550 .old_name
= old_name
,
2551 .new_name
= new_name
,
2552 .bitmask
= server
->attr_bitmask
,
2554 struct nfs_fattr old_fattr
, new_fattr
;
2555 struct nfs4_rename_res res
= {
2557 .old_fattr
= &old_fattr
,
2558 .new_fattr
= &new_fattr
,
2560 struct rpc_message msg
= {
2561 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RENAME
],
2567 nfs_fattr_init(res
.old_fattr
);
2568 nfs_fattr_init(res
.new_fattr
);
2569 status
= nfs4_call_sync(server
, &msg
, &arg
, &res
, 1);
2572 update_changeattr(old_dir
, &res
.old_cinfo
);
2573 nfs_post_op_update_inode(old_dir
, res
.old_fattr
);
2574 update_changeattr(new_dir
, &res
.new_cinfo
);
2575 nfs_post_op_update_inode(new_dir
, res
.new_fattr
);
2580 static int nfs4_proc_rename(struct inode
*old_dir
, struct qstr
*old_name
,
2581 struct inode
*new_dir
, struct qstr
*new_name
)
2583 struct nfs4_exception exception
= { };
2586 err
= nfs4_handle_exception(NFS_SERVER(old_dir
),
2587 _nfs4_proc_rename(old_dir
, old_name
,
2590 } while (exception
.retry
);
2594 static int _nfs4_proc_link(struct inode
*inode
, struct inode
*dir
, struct qstr
*name
)
2596 struct nfs_server
*server
= NFS_SERVER(inode
);
2597 struct nfs4_link_arg arg
= {
2598 .fh
= NFS_FH(inode
),
2599 .dir_fh
= NFS_FH(dir
),
2601 .bitmask
= server
->attr_bitmask
,
2603 struct nfs_fattr fattr
, dir_attr
;
2604 struct nfs4_link_res res
= {
2607 .dir_attr
= &dir_attr
,
2609 struct rpc_message msg
= {
2610 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LINK
],
2616 nfs_fattr_init(res
.fattr
);
2617 nfs_fattr_init(res
.dir_attr
);
2618 status
= nfs4_call_sync(server
, &msg
, &arg
, &res
, 1);
2620 update_changeattr(dir
, &res
.cinfo
);
2621 nfs_post_op_update_inode(dir
, res
.dir_attr
);
2622 nfs_post_op_update_inode(inode
, res
.fattr
);
2628 static int nfs4_proc_link(struct inode
*inode
, struct inode
*dir
, struct qstr
*name
)
2630 struct nfs4_exception exception
= { };
2633 err
= nfs4_handle_exception(NFS_SERVER(inode
),
2634 _nfs4_proc_link(inode
, dir
, name
),
2636 } while (exception
.retry
);
2640 struct nfs4_createdata
{
2641 struct rpc_message msg
;
2642 struct nfs4_create_arg arg
;
2643 struct nfs4_create_res res
;
2645 struct nfs_fattr fattr
;
2646 struct nfs_fattr dir_fattr
;
2649 static struct nfs4_createdata
*nfs4_alloc_createdata(struct inode
*dir
,
2650 struct qstr
*name
, struct iattr
*sattr
, u32 ftype
)
2652 struct nfs4_createdata
*data
;
2654 data
= kzalloc(sizeof(*data
), GFP_KERNEL
);
2656 struct nfs_server
*server
= NFS_SERVER(dir
);
2658 data
->msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_CREATE
];
2659 data
->msg
.rpc_argp
= &data
->arg
;
2660 data
->msg
.rpc_resp
= &data
->res
;
2661 data
->arg
.dir_fh
= NFS_FH(dir
);
2662 data
->arg
.server
= server
;
2663 data
->arg
.name
= name
;
2664 data
->arg
.attrs
= sattr
;
2665 data
->arg
.ftype
= ftype
;
2666 data
->arg
.bitmask
= server
->attr_bitmask
;
2667 data
->res
.server
= server
;
2668 data
->res
.fh
= &data
->fh
;
2669 data
->res
.fattr
= &data
->fattr
;
2670 data
->res
.dir_fattr
= &data
->dir_fattr
;
2671 nfs_fattr_init(data
->res
.fattr
);
2672 nfs_fattr_init(data
->res
.dir_fattr
);
2677 static int nfs4_do_create(struct inode
*dir
, struct dentry
*dentry
, struct nfs4_createdata
*data
)
2679 int status
= nfs4_call_sync(NFS_SERVER(dir
), &data
->msg
,
2680 &data
->arg
, &data
->res
, 1);
2682 update_changeattr(dir
, &data
->res
.dir_cinfo
);
2683 nfs_post_op_update_inode(dir
, data
->res
.dir_fattr
);
2684 status
= nfs_instantiate(dentry
, data
->res
.fh
, data
->res
.fattr
);
2689 static void nfs4_free_createdata(struct nfs4_createdata
*data
)
2694 static int _nfs4_proc_symlink(struct inode
*dir
, struct dentry
*dentry
,
2695 struct page
*page
, unsigned int len
, struct iattr
*sattr
)
2697 struct nfs4_createdata
*data
;
2698 int status
= -ENAMETOOLONG
;
2700 if (len
> NFS4_MAXPATHLEN
)
2704 data
= nfs4_alloc_createdata(dir
, &dentry
->d_name
, sattr
, NF4LNK
);
2708 data
->msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SYMLINK
];
2709 data
->arg
.u
.symlink
.pages
= &page
;
2710 data
->arg
.u
.symlink
.len
= len
;
2712 status
= nfs4_do_create(dir
, dentry
, data
);
2714 nfs4_free_createdata(data
);
2719 static int nfs4_proc_symlink(struct inode
*dir
, struct dentry
*dentry
,
2720 struct page
*page
, unsigned int len
, struct iattr
*sattr
)
2722 struct nfs4_exception exception
= { };
2725 err
= nfs4_handle_exception(NFS_SERVER(dir
),
2726 _nfs4_proc_symlink(dir
, dentry
, page
,
2729 } while (exception
.retry
);
2733 static int _nfs4_proc_mkdir(struct inode
*dir
, struct dentry
*dentry
,
2734 struct iattr
*sattr
)
2736 struct nfs4_createdata
*data
;
2737 int status
= -ENOMEM
;
2739 data
= nfs4_alloc_createdata(dir
, &dentry
->d_name
, sattr
, NF4DIR
);
2743 status
= nfs4_do_create(dir
, dentry
, data
);
2745 nfs4_free_createdata(data
);
2750 static int nfs4_proc_mkdir(struct inode
*dir
, struct dentry
*dentry
,
2751 struct iattr
*sattr
)
2753 struct nfs4_exception exception
= { };
2756 err
= nfs4_handle_exception(NFS_SERVER(dir
),
2757 _nfs4_proc_mkdir(dir
, dentry
, sattr
),
2759 } while (exception
.retry
);
2763 static int _nfs4_proc_readdir(struct dentry
*dentry
, struct rpc_cred
*cred
,
2764 u64 cookie
, struct page
*page
, unsigned int count
, int plus
)
2766 struct inode
*dir
= dentry
->d_inode
;
2767 struct nfs4_readdir_arg args
= {
2772 .bitmask
= NFS_SERVER(dentry
->d_inode
)->attr_bitmask
,
2774 struct nfs4_readdir_res res
;
2775 struct rpc_message msg
= {
2776 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_READDIR
],
2783 dprintk("%s: dentry = %s/%s, cookie = %Lu\n", __func__
,
2784 dentry
->d_parent
->d_name
.name
,
2785 dentry
->d_name
.name
,
2786 (unsigned long long)cookie
);
2787 nfs4_setup_readdir(cookie
, NFS_COOKIEVERF(dir
), dentry
, &args
);
2788 res
.pgbase
= args
.pgbase
;
2789 status
= nfs4_call_sync(NFS_SERVER(dir
), &msg
, &args
, &res
, 0);
2791 memcpy(NFS_COOKIEVERF(dir
), res
.verifier
.data
, NFS4_VERIFIER_SIZE
);
2793 nfs_invalidate_atime(dir
);
2795 dprintk("%s: returns %d\n", __func__
, status
);
2799 static int nfs4_proc_readdir(struct dentry
*dentry
, struct rpc_cred
*cred
,
2800 u64 cookie
, struct page
*page
, unsigned int count
, int plus
)
2802 struct nfs4_exception exception
= { };
2805 err
= nfs4_handle_exception(NFS_SERVER(dentry
->d_inode
),
2806 _nfs4_proc_readdir(dentry
, cred
, cookie
,
2809 } while (exception
.retry
);
2813 static int _nfs4_proc_mknod(struct inode
*dir
, struct dentry
*dentry
,
2814 struct iattr
*sattr
, dev_t rdev
)
2816 struct nfs4_createdata
*data
;
2817 int mode
= sattr
->ia_mode
;
2818 int status
= -ENOMEM
;
2820 BUG_ON(!(sattr
->ia_valid
& ATTR_MODE
));
2821 BUG_ON(!S_ISFIFO(mode
) && !S_ISBLK(mode
) && !S_ISCHR(mode
) && !S_ISSOCK(mode
));
2823 data
= nfs4_alloc_createdata(dir
, &dentry
->d_name
, sattr
, NF4SOCK
);
2828 data
->arg
.ftype
= NF4FIFO
;
2829 else if (S_ISBLK(mode
)) {
2830 data
->arg
.ftype
= NF4BLK
;
2831 data
->arg
.u
.device
.specdata1
= MAJOR(rdev
);
2832 data
->arg
.u
.device
.specdata2
= MINOR(rdev
);
2834 else if (S_ISCHR(mode
)) {
2835 data
->arg
.ftype
= NF4CHR
;
2836 data
->arg
.u
.device
.specdata1
= MAJOR(rdev
);
2837 data
->arg
.u
.device
.specdata2
= MINOR(rdev
);
2840 status
= nfs4_do_create(dir
, dentry
, data
);
2842 nfs4_free_createdata(data
);
2847 static int nfs4_proc_mknod(struct inode
*dir
, struct dentry
*dentry
,
2848 struct iattr
*sattr
, dev_t rdev
)
2850 struct nfs4_exception exception
= { };
2853 err
= nfs4_handle_exception(NFS_SERVER(dir
),
2854 _nfs4_proc_mknod(dir
, dentry
, sattr
, rdev
),
2856 } while (exception
.retry
);
2860 static int _nfs4_proc_statfs(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
2861 struct nfs_fsstat
*fsstat
)
2863 struct nfs4_statfs_arg args
= {
2865 .bitmask
= server
->attr_bitmask
,
2867 struct nfs4_statfs_res res
= {
2870 struct rpc_message msg
= {
2871 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_STATFS
],
2876 nfs_fattr_init(fsstat
->fattr
);
2877 return nfs4_call_sync(server
, &msg
, &args
, &res
, 0);
2880 static int nfs4_proc_statfs(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fsstat
*fsstat
)
2882 struct nfs4_exception exception
= { };
2885 err
= nfs4_handle_exception(server
,
2886 _nfs4_proc_statfs(server
, fhandle
, fsstat
),
2888 } while (exception
.retry
);
2892 static int _nfs4_do_fsinfo(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
2893 struct nfs_fsinfo
*fsinfo
)
2895 struct nfs4_fsinfo_arg args
= {
2897 .bitmask
= server
->attr_bitmask
,
2899 struct nfs4_fsinfo_res res
= {
2902 struct rpc_message msg
= {
2903 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_FSINFO
],
2908 return nfs4_call_sync(server
, &msg
, &args
, &res
, 0);
2911 static int nfs4_do_fsinfo(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fsinfo
*fsinfo
)
2913 struct nfs4_exception exception
= { };
2917 err
= nfs4_handle_exception(server
,
2918 _nfs4_do_fsinfo(server
, fhandle
, fsinfo
),
2920 } while (exception
.retry
);
2924 static int nfs4_proc_fsinfo(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fsinfo
*fsinfo
)
2926 nfs_fattr_init(fsinfo
->fattr
);
2927 return nfs4_do_fsinfo(server
, fhandle
, fsinfo
);
2930 static int _nfs4_proc_pathconf(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
2931 struct nfs_pathconf
*pathconf
)
2933 struct nfs4_pathconf_arg args
= {
2935 .bitmask
= server
->attr_bitmask
,
2937 struct nfs4_pathconf_res res
= {
2938 .pathconf
= pathconf
,
2940 struct rpc_message msg
= {
2941 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_PATHCONF
],
2946 /* None of the pathconf attributes are mandatory to implement */
2947 if ((args
.bitmask
[0] & nfs4_pathconf_bitmap
[0]) == 0) {
2948 memset(pathconf
, 0, sizeof(*pathconf
));
2952 nfs_fattr_init(pathconf
->fattr
);
2953 return nfs4_call_sync(server
, &msg
, &args
, &res
, 0);
2956 static int nfs4_proc_pathconf(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
2957 struct nfs_pathconf
*pathconf
)
2959 struct nfs4_exception exception
= { };
2963 err
= nfs4_handle_exception(server
,
2964 _nfs4_proc_pathconf(server
, fhandle
, pathconf
),
2966 } while (exception
.retry
);
2970 static int nfs4_read_done(struct rpc_task
*task
, struct nfs_read_data
*data
)
2972 struct nfs_server
*server
= NFS_SERVER(data
->inode
);
2974 dprintk("--> %s\n", __func__
);
2976 /* nfs4_sequence_free_slot called in the read rpc_call_done */
2977 nfs4_sequence_done(server
, &data
->res
.seq_res
, task
->tk_status
);
2979 if (nfs4_async_handle_error(task
, server
, data
->args
.context
->state
) == -EAGAIN
) {
2980 nfs4_restart_rpc(task
, server
->nfs_client
);
2984 nfs_invalidate_atime(data
->inode
);
2985 if (task
->tk_status
> 0)
2986 renew_lease(server
, data
->timestamp
);
2990 static void nfs4_proc_read_setup(struct nfs_read_data
*data
, struct rpc_message
*msg
)
2992 data
->timestamp
= jiffies
;
2993 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_READ
];
2996 static int nfs4_write_done(struct rpc_task
*task
, struct nfs_write_data
*data
)
2998 struct inode
*inode
= data
->inode
;
3000 /* slot is freed in nfs_writeback_done */
3001 nfs4_sequence_done(NFS_SERVER(inode
), &data
->res
.seq_res
,
3004 if (nfs4_async_handle_error(task
, NFS_SERVER(inode
), data
->args
.context
->state
) == -EAGAIN
) {
3005 nfs4_restart_rpc(task
, NFS_SERVER(inode
)->nfs_client
);
3008 if (task
->tk_status
>= 0) {
3009 renew_lease(NFS_SERVER(inode
), data
->timestamp
);
3010 nfs_post_op_update_inode_force_wcc(inode
, data
->res
.fattr
);
3015 static void nfs4_proc_write_setup(struct nfs_write_data
*data
, struct rpc_message
*msg
)
3017 struct nfs_server
*server
= NFS_SERVER(data
->inode
);
3019 data
->args
.bitmask
= server
->cache_consistency_bitmask
;
3020 data
->res
.server
= server
;
3021 data
->timestamp
= jiffies
;
3023 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_WRITE
];
3026 static int nfs4_commit_done(struct rpc_task
*task
, struct nfs_write_data
*data
)
3028 struct inode
*inode
= data
->inode
;
3030 nfs4_sequence_done(NFS_SERVER(inode
), &data
->res
.seq_res
,
3032 if (nfs4_async_handle_error(task
, NFS_SERVER(inode
), NULL
) == -EAGAIN
) {
3033 nfs4_restart_rpc(task
, NFS_SERVER(inode
)->nfs_client
);
3036 nfs4_sequence_free_slot(NFS_SERVER(inode
)->nfs_client
,
3037 &data
->res
.seq_res
);
3038 nfs_refresh_inode(inode
, data
->res
.fattr
);
3042 static void nfs4_proc_commit_setup(struct nfs_write_data
*data
, struct rpc_message
*msg
)
3044 struct nfs_server
*server
= NFS_SERVER(data
->inode
);
3046 data
->args
.bitmask
= server
->cache_consistency_bitmask
;
3047 data
->res
.server
= server
;
3048 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_COMMIT
];
3052 * nfs4_proc_async_renew(): This is not one of the nfs_rpc_ops; it is a special
3053 * standalone procedure for queueing an asynchronous RENEW.
3055 static void nfs4_renew_done(struct rpc_task
*task
, void *data
)
3057 struct nfs_client
*clp
= (struct nfs_client
*)task
->tk_msg
.rpc_argp
;
3058 unsigned long timestamp
= (unsigned long)data
;
3060 if (task
->tk_status
< 0) {
3061 /* Unless we're shutting down, schedule state recovery! */
3062 if (test_bit(NFS_CS_RENEWD
, &clp
->cl_res_state
) != 0)
3063 nfs4_schedule_state_recovery(clp
);
3066 spin_lock(&clp
->cl_lock
);
3067 if (time_before(clp
->cl_last_renewal
,timestamp
))
3068 clp
->cl_last_renewal
= timestamp
;
3069 spin_unlock(&clp
->cl_lock
);
3072 static const struct rpc_call_ops nfs4_renew_ops
= {
3073 .rpc_call_done
= nfs4_renew_done
,
3076 int nfs4_proc_async_renew(struct nfs_client
*clp
, struct rpc_cred
*cred
)
3078 struct rpc_message msg
= {
3079 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RENEW
],
3084 return rpc_call_async(clp
->cl_rpcclient
, &msg
, RPC_TASK_SOFT
,
3085 &nfs4_renew_ops
, (void *)jiffies
);
3088 int nfs4_proc_renew(struct nfs_client
*clp
, struct rpc_cred
*cred
)
3090 struct rpc_message msg
= {
3091 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RENEW
],
3095 unsigned long now
= jiffies
;
3098 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, 0);
3101 spin_lock(&clp
->cl_lock
);
3102 if (time_before(clp
->cl_last_renewal
,now
))
3103 clp
->cl_last_renewal
= now
;
3104 spin_unlock(&clp
->cl_lock
);
3108 static inline int nfs4_server_supports_acls(struct nfs_server
*server
)
3110 return (server
->caps
& NFS_CAP_ACLS
)
3111 && (server
->acl_bitmask
& ACL4_SUPPORT_ALLOW_ACL
)
3112 && (server
->acl_bitmask
& ACL4_SUPPORT_DENY_ACL
);
3115 /* Assuming that XATTR_SIZE_MAX is a multiple of PAGE_CACHE_SIZE, and that
3116 * it's OK to put sizeof(void) * (XATTR_SIZE_MAX/PAGE_CACHE_SIZE) bytes on
3119 #define NFS4ACL_MAXPAGES (XATTR_SIZE_MAX >> PAGE_CACHE_SHIFT)
3121 static void buf_to_pages(const void *buf
, size_t buflen
,
3122 struct page
**pages
, unsigned int *pgbase
)
3124 const void *p
= buf
;
3126 *pgbase
= offset_in_page(buf
);
3128 while (p
< buf
+ buflen
) {
3129 *(pages
++) = virt_to_page(p
);
3130 p
+= PAGE_CACHE_SIZE
;
3134 struct nfs4_cached_acl
{
3140 static void nfs4_set_cached_acl(struct inode
*inode
, struct nfs4_cached_acl
*acl
)
3142 struct nfs_inode
*nfsi
= NFS_I(inode
);
3144 spin_lock(&inode
->i_lock
);
3145 kfree(nfsi
->nfs4_acl
);
3146 nfsi
->nfs4_acl
= acl
;
3147 spin_unlock(&inode
->i_lock
);
3150 static void nfs4_zap_acl_attr(struct inode
*inode
)
3152 nfs4_set_cached_acl(inode
, NULL
);
3155 static inline ssize_t
nfs4_read_cached_acl(struct inode
*inode
, char *buf
, size_t buflen
)
3157 struct nfs_inode
*nfsi
= NFS_I(inode
);
3158 struct nfs4_cached_acl
*acl
;
3161 spin_lock(&inode
->i_lock
);
3162 acl
= nfsi
->nfs4_acl
;
3165 if (buf
== NULL
) /* user is just asking for length */
3167 if (acl
->cached
== 0)
3169 ret
= -ERANGE
; /* see getxattr(2) man page */
3170 if (acl
->len
> buflen
)
3172 memcpy(buf
, acl
->data
, acl
->len
);
3176 spin_unlock(&inode
->i_lock
);
3180 static void nfs4_write_cached_acl(struct inode
*inode
, const char *buf
, size_t acl_len
)
3182 struct nfs4_cached_acl
*acl
;
3184 if (buf
&& acl_len
<= PAGE_SIZE
) {
3185 acl
= kmalloc(sizeof(*acl
) + acl_len
, GFP_KERNEL
);
3189 memcpy(acl
->data
, buf
, acl_len
);
3191 acl
= kmalloc(sizeof(*acl
), GFP_KERNEL
);
3198 nfs4_set_cached_acl(inode
, acl
);
3201 static ssize_t
__nfs4_get_acl_uncached(struct inode
*inode
, void *buf
, size_t buflen
)
3203 struct page
*pages
[NFS4ACL_MAXPAGES
];
3204 struct nfs_getaclargs args
= {
3205 .fh
= NFS_FH(inode
),
3209 struct nfs_getaclres res
= {
3213 struct rpc_message msg
= {
3214 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GETACL
],
3218 struct page
*localpage
= NULL
;
3221 if (buflen
< PAGE_SIZE
) {
3222 /* As long as we're doing a round trip to the server anyway,
3223 * let's be prepared for a page of acl data. */
3224 localpage
= alloc_page(GFP_KERNEL
);
3225 resp_buf
= page_address(localpage
);
3226 if (localpage
== NULL
)
3228 args
.acl_pages
[0] = localpage
;
3229 args
.acl_pgbase
= 0;
3230 args
.acl_len
= PAGE_SIZE
;
3233 buf_to_pages(buf
, buflen
, args
.acl_pages
, &args
.acl_pgbase
);
3235 ret
= nfs4_call_sync(NFS_SERVER(inode
), &msg
, &args
, &res
, 0);
3238 if (res
.acl_len
> args
.acl_len
)
3239 nfs4_write_cached_acl(inode
, NULL
, res
.acl_len
);
3241 nfs4_write_cached_acl(inode
, resp_buf
, res
.acl_len
);
3244 if (res
.acl_len
> buflen
)
3247 memcpy(buf
, resp_buf
, res
.acl_len
);
3252 __free_page(localpage
);
3256 static ssize_t
nfs4_get_acl_uncached(struct inode
*inode
, void *buf
, size_t buflen
)
3258 struct nfs4_exception exception
= { };
3261 ret
= __nfs4_get_acl_uncached(inode
, buf
, buflen
);
3264 ret
= nfs4_handle_exception(NFS_SERVER(inode
), ret
, &exception
);
3265 } while (exception
.retry
);
3269 static ssize_t
nfs4_proc_get_acl(struct inode
*inode
, void *buf
, size_t buflen
)
3271 struct nfs_server
*server
= NFS_SERVER(inode
);
3274 if (!nfs4_server_supports_acls(server
))
3276 ret
= nfs_revalidate_inode(server
, inode
);
3279 ret
= nfs4_read_cached_acl(inode
, buf
, buflen
);
3282 return nfs4_get_acl_uncached(inode
, buf
, buflen
);
3285 static int __nfs4_proc_set_acl(struct inode
*inode
, const void *buf
, size_t buflen
)
3287 struct nfs_server
*server
= NFS_SERVER(inode
);
3288 struct page
*pages
[NFS4ACL_MAXPAGES
];
3289 struct nfs_setaclargs arg
= {
3290 .fh
= NFS_FH(inode
),
3294 struct nfs_setaclres res
;
3295 struct rpc_message msg
= {
3296 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETACL
],
3302 if (!nfs4_server_supports_acls(server
))
3304 nfs_inode_return_delegation(inode
);
3305 buf_to_pages(buf
, buflen
, arg
.acl_pages
, &arg
.acl_pgbase
);
3306 ret
= nfs4_call_sync(server
, &msg
, &arg
, &res
, 1);
3307 nfs_access_zap_cache(inode
);
3308 nfs_zap_acl_cache(inode
);
3312 static int nfs4_proc_set_acl(struct inode
*inode
, const void *buf
, size_t buflen
)
3314 struct nfs4_exception exception
= { };
3317 err
= nfs4_handle_exception(NFS_SERVER(inode
),
3318 __nfs4_proc_set_acl(inode
, buf
, buflen
),
3320 } while (exception
.retry
);
3325 _nfs4_async_handle_error(struct rpc_task
*task
, const struct nfs_server
*server
, struct nfs_client
*clp
, struct nfs4_state
*state
)
3327 if (!clp
|| task
->tk_status
>= 0)
3329 switch(task
->tk_status
) {
3330 case -NFS4ERR_ADMIN_REVOKED
:
3331 case -NFS4ERR_BAD_STATEID
:
3332 case -NFS4ERR_OPENMODE
:
3335 nfs4_state_mark_reclaim_nograce(clp
, state
);
3336 case -NFS4ERR_STALE_CLIENTID
:
3337 case -NFS4ERR_STALE_STATEID
:
3338 case -NFS4ERR_EXPIRED
:
3339 rpc_sleep_on(&clp
->cl_rpcwaitq
, task
, NULL
);
3340 nfs4_schedule_state_recovery(clp
);
3341 if (test_bit(NFS4CLNT_MANAGER_RUNNING
, &clp
->cl_state
) == 0)
3342 rpc_wake_up_queued_task(&clp
->cl_rpcwaitq
, task
);
3343 task
->tk_status
= 0;
3345 #if defined(CONFIG_NFS_V4_1)
3346 case -NFS4ERR_BADSESSION
:
3347 case -NFS4ERR_BADSLOT
:
3348 case -NFS4ERR_BAD_HIGH_SLOT
:
3349 case -NFS4ERR_DEADSESSION
:
3350 case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION
:
3351 case -NFS4ERR_SEQ_FALSE_RETRY
:
3352 case -NFS4ERR_SEQ_MISORDERED
:
3353 dprintk("%s ERROR %d, Reset session\n", __func__
,
3355 set_bit(NFS4CLNT_SESSION_SETUP
, &clp
->cl_state
);
3356 task
->tk_status
= 0;
3358 #endif /* CONFIG_NFS_V4_1 */
3359 case -NFS4ERR_DELAY
:
3361 nfs_inc_server_stats(server
, NFSIOS_DELAY
);
3362 case -NFS4ERR_GRACE
:
3363 rpc_delay(task
, NFS4_POLL_RETRY_MAX
);
3364 task
->tk_status
= 0;
3366 case -NFS4ERR_OLD_STATEID
:
3367 task
->tk_status
= 0;
3370 task
->tk_status
= nfs4_map_errors(task
->tk_status
);
3375 nfs4_async_handle_error(struct rpc_task
*task
, const struct nfs_server
*server
, struct nfs4_state
*state
)
3377 return _nfs4_async_handle_error(task
, server
, server
->nfs_client
, state
);
3380 int nfs4_proc_setclientid(struct nfs_client
*clp
, u32 program
, unsigned short port
, struct rpc_cred
*cred
)
3382 nfs4_verifier sc_verifier
;
3383 struct nfs4_setclientid setclientid
= {
3384 .sc_verifier
= &sc_verifier
,
3387 struct rpc_message msg
= {
3388 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETCLIENTID
],
3389 .rpc_argp
= &setclientid
,
3397 p
= (__be32
*)sc_verifier
.data
;
3398 *p
++ = htonl((u32
)clp
->cl_boot_time
.tv_sec
);
3399 *p
= htonl((u32
)clp
->cl_boot_time
.tv_nsec
);
3402 setclientid
.sc_name_len
= scnprintf(setclientid
.sc_name
,
3403 sizeof(setclientid
.sc_name
), "%s/%s %s %s %u",
3405 rpc_peeraddr2str(clp
->cl_rpcclient
,
3407 rpc_peeraddr2str(clp
->cl_rpcclient
,
3409 clp
->cl_rpcclient
->cl_auth
->au_ops
->au_name
,
3410 clp
->cl_id_uniquifier
);
3411 setclientid
.sc_netid_len
= scnprintf(setclientid
.sc_netid
,
3412 sizeof(setclientid
.sc_netid
),
3413 rpc_peeraddr2str(clp
->cl_rpcclient
,
3414 RPC_DISPLAY_NETID
));
3415 setclientid
.sc_uaddr_len
= scnprintf(setclientid
.sc_uaddr
,
3416 sizeof(setclientid
.sc_uaddr
), "%s.%u.%u",
3417 clp
->cl_ipaddr
, port
>> 8, port
& 255);
3419 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, 0);
3420 if (status
!= -NFS4ERR_CLID_INUSE
)
3425 ssleep(clp
->cl_lease_time
+ 1);
3427 if (++clp
->cl_id_uniquifier
== 0)
3433 static int _nfs4_proc_setclientid_confirm(struct nfs_client
*clp
, struct rpc_cred
*cred
)
3435 struct nfs_fsinfo fsinfo
;
3436 struct rpc_message msg
= {
3437 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETCLIENTID_CONFIRM
],
3439 .rpc_resp
= &fsinfo
,
3446 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, 0);
3448 spin_lock(&clp
->cl_lock
);
3449 clp
->cl_lease_time
= fsinfo
.lease_time
* HZ
;
3450 clp
->cl_last_renewal
= now
;
3451 spin_unlock(&clp
->cl_lock
);
3456 int nfs4_proc_setclientid_confirm(struct nfs_client
*clp
, struct rpc_cred
*cred
)
3461 err
= _nfs4_proc_setclientid_confirm(clp
, cred
);
3465 case -NFS4ERR_RESOURCE
:
3466 /* The IBM lawyers misread another document! */
3467 case -NFS4ERR_DELAY
:
3468 err
= nfs4_delay(clp
->cl_rpcclient
, &timeout
);
3474 struct nfs4_delegreturndata
{
3475 struct nfs4_delegreturnargs args
;
3476 struct nfs4_delegreturnres res
;
3478 nfs4_stateid stateid
;
3479 unsigned long timestamp
;
3480 struct nfs_fattr fattr
;
3484 static void nfs4_delegreturn_done(struct rpc_task
*task
, void *calldata
)
3486 struct nfs4_delegreturndata
*data
= calldata
;
3488 nfs4_sequence_done_free_slot(data
->res
.server
, &data
->res
.seq_res
,
3491 data
->rpc_status
= task
->tk_status
;
3492 if (data
->rpc_status
== 0)
3493 renew_lease(data
->res
.server
, data
->timestamp
);
3496 static void nfs4_delegreturn_release(void *calldata
)
3501 #if defined(CONFIG_NFS_V4_1)
3502 static void nfs4_delegreturn_prepare(struct rpc_task
*task
, void *data
)
3504 struct nfs4_delegreturndata
*d_data
;
3506 d_data
= (struct nfs4_delegreturndata
*)data
;
3508 if (nfs4_setup_sequence(d_data
->res
.server
->nfs_client
,
3509 &d_data
->args
.seq_args
,
3510 &d_data
->res
.seq_res
, 1, task
))
3512 rpc_call_start(task
);
3514 #endif /* CONFIG_NFS_V4_1 */
3516 static const struct rpc_call_ops nfs4_delegreturn_ops
= {
3517 #if defined(CONFIG_NFS_V4_1)
3518 .rpc_call_prepare
= nfs4_delegreturn_prepare
,
3519 #endif /* CONFIG_NFS_V4_1 */
3520 .rpc_call_done
= nfs4_delegreturn_done
,
3521 .rpc_release
= nfs4_delegreturn_release
,
3524 static int _nfs4_proc_delegreturn(struct inode
*inode
, struct rpc_cred
*cred
, const nfs4_stateid
*stateid
, int issync
)
3526 struct nfs4_delegreturndata
*data
;
3527 struct nfs_server
*server
= NFS_SERVER(inode
);
3528 struct rpc_task
*task
;
3529 struct rpc_message msg
= {
3530 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_DELEGRETURN
],
3533 struct rpc_task_setup task_setup_data
= {
3534 .rpc_client
= server
->client
,
3535 .rpc_message
= &msg
,
3536 .callback_ops
= &nfs4_delegreturn_ops
,
3537 .flags
= RPC_TASK_ASYNC
,
3541 data
= kzalloc(sizeof(*data
), GFP_KERNEL
);
3544 data
->args
.fhandle
= &data
->fh
;
3545 data
->args
.stateid
= &data
->stateid
;
3546 data
->args
.bitmask
= server
->attr_bitmask
;
3547 nfs_copy_fh(&data
->fh
, NFS_FH(inode
));
3548 memcpy(&data
->stateid
, stateid
, sizeof(data
->stateid
));
3549 data
->res
.fattr
= &data
->fattr
;
3550 data
->res
.server
= server
;
3551 data
->res
.seq_res
.sr_slotid
= NFS4_MAX_SLOT_TABLE
;
3552 nfs_fattr_init(data
->res
.fattr
);
3553 data
->timestamp
= jiffies
;
3554 data
->rpc_status
= 0;
3556 task_setup_data
.callback_data
= data
;
3557 msg
.rpc_argp
= &data
->args
,
3558 msg
.rpc_resp
= &data
->res
,
3559 task
= rpc_run_task(&task_setup_data
);
3561 return PTR_ERR(task
);
3564 status
= nfs4_wait_for_completion_rpc_task(task
);
3567 status
= data
->rpc_status
;
3570 nfs_refresh_inode(inode
, &data
->fattr
);
3576 int nfs4_proc_delegreturn(struct inode
*inode
, struct rpc_cred
*cred
, const nfs4_stateid
*stateid
, int issync
)
3578 struct nfs_server
*server
= NFS_SERVER(inode
);
3579 struct nfs4_exception exception
= { };
3582 err
= _nfs4_proc_delegreturn(inode
, cred
, stateid
, issync
);
3584 case -NFS4ERR_STALE_STATEID
:
3585 case -NFS4ERR_EXPIRED
:
3589 err
= nfs4_handle_exception(server
, err
, &exception
);
3590 } while (exception
.retry
);
3594 #define NFS4_LOCK_MINTIMEOUT (1 * HZ)
3595 #define NFS4_LOCK_MAXTIMEOUT (30 * HZ)
3598 * sleep, with exponential backoff, and retry the LOCK operation.
3600 static unsigned long
3601 nfs4_set_lock_task_retry(unsigned long timeout
)
3603 schedule_timeout_killable(timeout
);
3605 if (timeout
> NFS4_LOCK_MAXTIMEOUT
)
3606 return NFS4_LOCK_MAXTIMEOUT
;
3610 static int _nfs4_proc_getlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
3612 struct inode
*inode
= state
->inode
;
3613 struct nfs_server
*server
= NFS_SERVER(inode
);
3614 struct nfs_client
*clp
= server
->nfs_client
;
3615 struct nfs_lockt_args arg
= {
3616 .fh
= NFS_FH(inode
),
3619 struct nfs_lockt_res res
= {
3622 struct rpc_message msg
= {
3623 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOCKT
],
3626 .rpc_cred
= state
->owner
->so_cred
,
3628 struct nfs4_lock_state
*lsp
;
3631 arg
.lock_owner
.clientid
= clp
->cl_clientid
;
3632 status
= nfs4_set_lock_state(state
, request
);
3635 lsp
= request
->fl_u
.nfs4_fl
.owner
;
3636 arg
.lock_owner
.id
= lsp
->ls_id
.id
;
3637 status
= nfs4_call_sync(server
, &msg
, &arg
, &res
, 1);
3640 request
->fl_type
= F_UNLCK
;
3642 case -NFS4ERR_DENIED
:
3645 request
->fl_ops
->fl_release_private(request
);
3650 static int nfs4_proc_getlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
3652 struct nfs4_exception exception
= { };
3656 err
= nfs4_handle_exception(NFS_SERVER(state
->inode
),
3657 _nfs4_proc_getlk(state
, cmd
, request
),
3659 } while (exception
.retry
);
3663 static int do_vfs_lock(struct file
*file
, struct file_lock
*fl
)
3666 switch (fl
->fl_flags
& (FL_POSIX
|FL_FLOCK
)) {
3668 res
= posix_lock_file_wait(file
, fl
);
3671 res
= flock_lock_file_wait(file
, fl
);
3679 struct nfs4_unlockdata
{
3680 struct nfs_locku_args arg
;
3681 struct nfs_locku_res res
;
3682 struct nfs4_lock_state
*lsp
;
3683 struct nfs_open_context
*ctx
;
3684 struct file_lock fl
;
3685 const struct nfs_server
*server
;
3686 unsigned long timestamp
;
3689 static struct nfs4_unlockdata
*nfs4_alloc_unlockdata(struct file_lock
*fl
,
3690 struct nfs_open_context
*ctx
,
3691 struct nfs4_lock_state
*lsp
,
3692 struct nfs_seqid
*seqid
)
3694 struct nfs4_unlockdata
*p
;
3695 struct inode
*inode
= lsp
->ls_state
->inode
;
3697 p
= kzalloc(sizeof(*p
), GFP_KERNEL
);
3700 p
->arg
.fh
= NFS_FH(inode
);
3702 p
->arg
.seqid
= seqid
;
3703 p
->res
.seqid
= seqid
;
3704 p
->res
.seq_res
.sr_slotid
= NFS4_MAX_SLOT_TABLE
;
3705 p
->arg
.stateid
= &lsp
->ls_stateid
;
3707 atomic_inc(&lsp
->ls_count
);
3708 /* Ensure we don't close file until we're done freeing locks! */
3709 p
->ctx
= get_nfs_open_context(ctx
);
3710 memcpy(&p
->fl
, fl
, sizeof(p
->fl
));
3711 p
->server
= NFS_SERVER(inode
);
3715 static void nfs4_locku_release_calldata(void *data
)
3717 struct nfs4_unlockdata
*calldata
= data
;
3718 nfs_free_seqid(calldata
->arg
.seqid
);
3719 nfs4_put_lock_state(calldata
->lsp
);
3720 put_nfs_open_context(calldata
->ctx
);
3724 static void nfs4_locku_done(struct rpc_task
*task
, void *data
)
3726 struct nfs4_unlockdata
*calldata
= data
;
3728 nfs4_sequence_done(calldata
->server
, &calldata
->res
.seq_res
,
3730 if (RPC_ASSASSINATED(task
))
3732 switch (task
->tk_status
) {
3734 memcpy(calldata
->lsp
->ls_stateid
.data
,
3735 calldata
->res
.stateid
.data
,
3736 sizeof(calldata
->lsp
->ls_stateid
.data
));
3737 renew_lease(calldata
->server
, calldata
->timestamp
);
3739 case -NFS4ERR_BAD_STATEID
:
3740 case -NFS4ERR_OLD_STATEID
:
3741 case -NFS4ERR_STALE_STATEID
:
3742 case -NFS4ERR_EXPIRED
:
3745 if (nfs4_async_handle_error(task
, calldata
->server
, NULL
) == -EAGAIN
)
3746 nfs4_restart_rpc(task
,
3747 calldata
->server
->nfs_client
);
3749 nfs4_sequence_free_slot(calldata
->server
->nfs_client
,
3750 &calldata
->res
.seq_res
);
3753 static void nfs4_locku_prepare(struct rpc_task
*task
, void *data
)
3755 struct nfs4_unlockdata
*calldata
= data
;
3757 if (nfs_wait_on_sequence(calldata
->arg
.seqid
, task
) != 0)
3759 if ((calldata
->lsp
->ls_flags
& NFS_LOCK_INITIALIZED
) == 0) {
3760 /* Note: exit _without_ running nfs4_locku_done */
3761 task
->tk_action
= NULL
;
3764 calldata
->timestamp
= jiffies
;
3765 if (nfs4_setup_sequence(calldata
->server
->nfs_client
,
3766 &calldata
->arg
.seq_args
,
3767 &calldata
->res
.seq_res
, 1, task
))
3769 rpc_call_start(task
);
3772 static const struct rpc_call_ops nfs4_locku_ops
= {
3773 .rpc_call_prepare
= nfs4_locku_prepare
,
3774 .rpc_call_done
= nfs4_locku_done
,
3775 .rpc_release
= nfs4_locku_release_calldata
,
3778 static struct rpc_task
*nfs4_do_unlck(struct file_lock
*fl
,
3779 struct nfs_open_context
*ctx
,
3780 struct nfs4_lock_state
*lsp
,
3781 struct nfs_seqid
*seqid
)
3783 struct nfs4_unlockdata
*data
;
3784 struct rpc_message msg
= {
3785 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOCKU
],
3786 .rpc_cred
= ctx
->cred
,
3788 struct rpc_task_setup task_setup_data
= {
3789 .rpc_client
= NFS_CLIENT(lsp
->ls_state
->inode
),
3790 .rpc_message
= &msg
,
3791 .callback_ops
= &nfs4_locku_ops
,
3792 .workqueue
= nfsiod_workqueue
,
3793 .flags
= RPC_TASK_ASYNC
,
3796 /* Ensure this is an unlock - when canceling a lock, the
3797 * canceled lock is passed in, and it won't be an unlock.
3799 fl
->fl_type
= F_UNLCK
;
3801 data
= nfs4_alloc_unlockdata(fl
, ctx
, lsp
, seqid
);
3803 nfs_free_seqid(seqid
);
3804 return ERR_PTR(-ENOMEM
);
3807 msg
.rpc_argp
= &data
->arg
,
3808 msg
.rpc_resp
= &data
->res
,
3809 task_setup_data
.callback_data
= data
;
3810 return rpc_run_task(&task_setup_data
);
3813 static int nfs4_proc_unlck(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
3815 struct nfs_inode
*nfsi
= NFS_I(state
->inode
);
3816 struct nfs_seqid
*seqid
;
3817 struct nfs4_lock_state
*lsp
;
3818 struct rpc_task
*task
;
3820 unsigned char fl_flags
= request
->fl_flags
;
3822 status
= nfs4_set_lock_state(state
, request
);
3823 /* Unlock _before_ we do the RPC call */
3824 request
->fl_flags
|= FL_EXISTS
;
3825 down_read(&nfsi
->rwsem
);
3826 if (do_vfs_lock(request
->fl_file
, request
) == -ENOENT
) {
3827 up_read(&nfsi
->rwsem
);
3830 up_read(&nfsi
->rwsem
);
3833 /* Is this a delegated lock? */
3834 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
))
3836 lsp
= request
->fl_u
.nfs4_fl
.owner
;
3837 seqid
= nfs_alloc_seqid(&lsp
->ls_seqid
);
3841 task
= nfs4_do_unlck(request
, nfs_file_open_context(request
->fl_file
), lsp
, seqid
);
3842 status
= PTR_ERR(task
);
3845 status
= nfs4_wait_for_completion_rpc_task(task
);
3848 request
->fl_flags
= fl_flags
;
3852 struct nfs4_lockdata
{
3853 struct nfs_lock_args arg
;
3854 struct nfs_lock_res res
;
3855 struct nfs4_lock_state
*lsp
;
3856 struct nfs_open_context
*ctx
;
3857 struct file_lock fl
;
3858 unsigned long timestamp
;
3861 struct nfs_server
*server
;
3864 static struct nfs4_lockdata
*nfs4_alloc_lockdata(struct file_lock
*fl
,
3865 struct nfs_open_context
*ctx
, struct nfs4_lock_state
*lsp
)
3867 struct nfs4_lockdata
*p
;
3868 struct inode
*inode
= lsp
->ls_state
->inode
;
3869 struct nfs_server
*server
= NFS_SERVER(inode
);
3871 p
= kzalloc(sizeof(*p
), GFP_KERNEL
);
3875 p
->arg
.fh
= NFS_FH(inode
);
3877 p
->arg
.open_seqid
= nfs_alloc_seqid(&lsp
->ls_state
->owner
->so_seqid
);
3878 if (p
->arg
.open_seqid
== NULL
)
3880 p
->arg
.lock_seqid
= nfs_alloc_seqid(&lsp
->ls_seqid
);
3881 if (p
->arg
.lock_seqid
== NULL
)
3882 goto out_free_seqid
;
3883 p
->arg
.lock_stateid
= &lsp
->ls_stateid
;
3884 p
->arg
.lock_owner
.clientid
= server
->nfs_client
->cl_clientid
;
3885 p
->arg
.lock_owner
.id
= lsp
->ls_id
.id
;
3886 p
->res
.lock_seqid
= p
->arg
.lock_seqid
;
3887 p
->res
.seq_res
.sr_slotid
= NFS4_MAX_SLOT_TABLE
;
3890 atomic_inc(&lsp
->ls_count
);
3891 p
->ctx
= get_nfs_open_context(ctx
);
3892 memcpy(&p
->fl
, fl
, sizeof(p
->fl
));
3895 nfs_free_seqid(p
->arg
.open_seqid
);
3901 static void nfs4_lock_prepare(struct rpc_task
*task
, void *calldata
)
3903 struct nfs4_lockdata
*data
= calldata
;
3904 struct nfs4_state
*state
= data
->lsp
->ls_state
;
3906 dprintk("%s: begin!\n", __func__
);
3907 if (nfs_wait_on_sequence(data
->arg
.lock_seqid
, task
) != 0)
3909 /* Do we need to do an open_to_lock_owner? */
3910 if (!(data
->arg
.lock_seqid
->sequence
->flags
& NFS_SEQID_CONFIRMED
)) {
3911 if (nfs_wait_on_sequence(data
->arg
.open_seqid
, task
) != 0)
3913 data
->arg
.open_stateid
= &state
->stateid
;
3914 data
->arg
.new_lock_owner
= 1;
3915 data
->res
.open_seqid
= data
->arg
.open_seqid
;
3917 data
->arg
.new_lock_owner
= 0;
3918 data
->timestamp
= jiffies
;
3919 if (nfs4_setup_sequence(data
->server
->nfs_client
, &data
->arg
.seq_args
,
3920 &data
->res
.seq_res
, 1, task
))
3922 rpc_call_start(task
);
3923 dprintk("%s: done!, ret = %d\n", __func__
, data
->rpc_status
);
3926 static void nfs4_lock_done(struct rpc_task
*task
, void *calldata
)
3928 struct nfs4_lockdata
*data
= calldata
;
3930 dprintk("%s: begin!\n", __func__
);
3932 nfs4_sequence_done_free_slot(data
->server
, &data
->res
.seq_res
,
3935 data
->rpc_status
= task
->tk_status
;
3936 if (RPC_ASSASSINATED(task
))
3938 if (data
->arg
.new_lock_owner
!= 0) {
3939 if (data
->rpc_status
== 0)
3940 nfs_confirm_seqid(&data
->lsp
->ls_seqid
, 0);
3944 if (data
->rpc_status
== 0) {
3945 memcpy(data
->lsp
->ls_stateid
.data
, data
->res
.stateid
.data
,
3946 sizeof(data
->lsp
->ls_stateid
.data
));
3947 data
->lsp
->ls_flags
|= NFS_LOCK_INITIALIZED
;
3948 renew_lease(NFS_SERVER(data
->ctx
->path
.dentry
->d_inode
), data
->timestamp
);
3951 dprintk("%s: done, ret = %d!\n", __func__
, data
->rpc_status
);
3954 static void nfs4_lock_release(void *calldata
)
3956 struct nfs4_lockdata
*data
= calldata
;
3958 dprintk("%s: begin!\n", __func__
);
3959 nfs_free_seqid(data
->arg
.open_seqid
);
3960 if (data
->cancelled
!= 0) {
3961 struct rpc_task
*task
;
3962 task
= nfs4_do_unlck(&data
->fl
, data
->ctx
, data
->lsp
,
3963 data
->arg
.lock_seqid
);
3966 dprintk("%s: cancelling lock!\n", __func__
);
3968 nfs_free_seqid(data
->arg
.lock_seqid
);
3969 nfs4_put_lock_state(data
->lsp
);
3970 put_nfs_open_context(data
->ctx
);
3972 dprintk("%s: done!\n", __func__
);
3975 static const struct rpc_call_ops nfs4_lock_ops
= {
3976 .rpc_call_prepare
= nfs4_lock_prepare
,
3977 .rpc_call_done
= nfs4_lock_done
,
3978 .rpc_release
= nfs4_lock_release
,
3981 static void nfs4_handle_setlk_error(struct nfs_server
*server
, struct nfs4_lock_state
*lsp
, int new_lock_owner
, int error
)
3983 struct nfs_client
*clp
= server
->nfs_client
;
3984 struct nfs4_state
*state
= lsp
->ls_state
;
3987 case -NFS4ERR_ADMIN_REVOKED
:
3988 case -NFS4ERR_BAD_STATEID
:
3989 case -NFS4ERR_EXPIRED
:
3990 if (new_lock_owner
!= 0 ||
3991 (lsp
->ls_flags
& NFS_LOCK_INITIALIZED
) != 0)
3992 nfs4_state_mark_reclaim_nograce(clp
, state
);
3993 lsp
->ls_seqid
.flags
&= ~NFS_SEQID_CONFIRMED
;
3997 static int _nfs4_do_setlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*fl
, int reclaim
)
3999 struct nfs4_lockdata
*data
;
4000 struct rpc_task
*task
;
4001 struct rpc_message msg
= {
4002 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOCK
],
4003 .rpc_cred
= state
->owner
->so_cred
,
4005 struct rpc_task_setup task_setup_data
= {
4006 .rpc_client
= NFS_CLIENT(state
->inode
),
4007 .rpc_message
= &msg
,
4008 .callback_ops
= &nfs4_lock_ops
,
4009 .workqueue
= nfsiod_workqueue
,
4010 .flags
= RPC_TASK_ASYNC
,
4014 dprintk("%s: begin!\n", __func__
);
4015 data
= nfs4_alloc_lockdata(fl
, nfs_file_open_context(fl
->fl_file
),
4016 fl
->fl_u
.nfs4_fl
.owner
);
4020 data
->arg
.block
= 1;
4022 data
->arg
.reclaim
= 1;
4023 msg
.rpc_argp
= &data
->arg
,
4024 msg
.rpc_resp
= &data
->res
,
4025 task_setup_data
.callback_data
= data
;
4026 task
= rpc_run_task(&task_setup_data
);
4028 return PTR_ERR(task
);
4029 ret
= nfs4_wait_for_completion_rpc_task(task
);
4031 ret
= data
->rpc_status
;
4033 nfs4_handle_setlk_error(data
->server
, data
->lsp
,
4034 data
->arg
.new_lock_owner
, ret
);
4036 data
->cancelled
= 1;
4038 dprintk("%s: done, ret = %d!\n", __func__
, ret
);
4042 static int nfs4_lock_reclaim(struct nfs4_state
*state
, struct file_lock
*request
)
4044 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
4045 struct nfs4_exception exception
= { };
4049 /* Cache the lock if possible... */
4050 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) != 0)
4052 err
= _nfs4_do_setlk(state
, F_SETLK
, request
, 1);
4053 if (err
!= -NFS4ERR_DELAY
)
4055 nfs4_handle_exception(server
, err
, &exception
);
4056 } while (exception
.retry
);
4060 static int nfs4_lock_expired(struct nfs4_state
*state
, struct file_lock
*request
)
4062 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
4063 struct nfs4_exception exception
= { };
4066 err
= nfs4_set_lock_state(state
, request
);
4070 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) != 0)
4072 err
= _nfs4_do_setlk(state
, F_SETLK
, request
, 0);
4073 if (err
!= -NFS4ERR_DELAY
)
4075 nfs4_handle_exception(server
, err
, &exception
);
4076 } while (exception
.retry
);
4080 static int _nfs4_proc_setlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
4082 struct nfs_inode
*nfsi
= NFS_I(state
->inode
);
4083 unsigned char fl_flags
= request
->fl_flags
;
4084 int status
= -ENOLCK
;
4086 if ((fl_flags
& FL_POSIX
) &&
4087 !test_bit(NFS_STATE_POSIX_LOCKS
, &state
->flags
))
4089 /* Is this a delegated open? */
4090 status
= nfs4_set_lock_state(state
, request
);
4093 request
->fl_flags
|= FL_ACCESS
;
4094 status
= do_vfs_lock(request
->fl_file
, request
);
4097 down_read(&nfsi
->rwsem
);
4098 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
)) {
4099 /* Yes: cache locks! */
4100 /* ...but avoid races with delegation recall... */
4101 request
->fl_flags
= fl_flags
& ~FL_SLEEP
;
4102 status
= do_vfs_lock(request
->fl_file
, request
);
4105 status
= _nfs4_do_setlk(state
, cmd
, request
, 0);
4108 /* Note: we always want to sleep here! */
4109 request
->fl_flags
= fl_flags
| FL_SLEEP
;
4110 if (do_vfs_lock(request
->fl_file
, request
) < 0)
4111 printk(KERN_WARNING
"%s: VFS is out of sync with lock manager!\n", __func__
);
4113 up_read(&nfsi
->rwsem
);
4115 request
->fl_flags
= fl_flags
;
4119 static int nfs4_proc_setlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
4121 struct nfs4_exception exception
= { };
4125 err
= _nfs4_proc_setlk(state
, cmd
, request
);
4126 if (err
== -NFS4ERR_DENIED
)
4128 err
= nfs4_handle_exception(NFS_SERVER(state
->inode
),
4130 } while (exception
.retry
);
4135 nfs4_proc_lock(struct file
*filp
, int cmd
, struct file_lock
*request
)
4137 struct nfs_open_context
*ctx
;
4138 struct nfs4_state
*state
;
4139 unsigned long timeout
= NFS4_LOCK_MINTIMEOUT
;
4142 /* verify open state */
4143 ctx
= nfs_file_open_context(filp
);
4146 if (request
->fl_start
< 0 || request
->fl_end
< 0)
4149 if (IS_GETLK(cmd
)) {
4151 return nfs4_proc_getlk(state
, F_GETLK
, request
);
4155 if (!(IS_SETLK(cmd
) || IS_SETLKW(cmd
)))
4158 if (request
->fl_type
== F_UNLCK
) {
4160 return nfs4_proc_unlck(state
, cmd
, request
);
4167 status
= nfs4_proc_setlk(state
, cmd
, request
);
4168 if ((status
!= -EAGAIN
) || IS_SETLK(cmd
))
4170 timeout
= nfs4_set_lock_task_retry(timeout
);
4171 status
= -ERESTARTSYS
;
4174 } while(status
< 0);
4178 int nfs4_lock_delegation_recall(struct nfs4_state
*state
, struct file_lock
*fl
)
4180 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
4181 struct nfs4_exception exception
= { };
4184 err
= nfs4_set_lock_state(state
, fl
);
4188 err
= _nfs4_do_setlk(state
, F_SETLK
, fl
, 0);
4191 printk(KERN_ERR
"%s: unhandled error %d.\n",
4196 case -NFS4ERR_EXPIRED
:
4197 case -NFS4ERR_STALE_CLIENTID
:
4198 case -NFS4ERR_STALE_STATEID
:
4199 nfs4_schedule_state_recovery(server
->nfs_client
);
4203 * The show must go on: exit, but mark the
4204 * stateid as needing recovery.
4206 case -NFS4ERR_ADMIN_REVOKED
:
4207 case -NFS4ERR_BAD_STATEID
:
4208 case -NFS4ERR_OPENMODE
:
4209 nfs4_state_mark_reclaim_nograce(server
->nfs_client
, state
);
4213 case -NFS4ERR_DENIED
:
4214 /* kill_proc(fl->fl_pid, SIGLOST, 1); */
4217 case -NFS4ERR_DELAY
:
4220 err
= nfs4_handle_exception(server
, err
, &exception
);
4221 } while (exception
.retry
);
4226 #define XATTR_NAME_NFSV4_ACL "system.nfs4_acl"
4228 int nfs4_setxattr(struct dentry
*dentry
, const char *key
, const void *buf
,
4229 size_t buflen
, int flags
)
4231 struct inode
*inode
= dentry
->d_inode
;
4233 if (strcmp(key
, XATTR_NAME_NFSV4_ACL
) != 0)
4236 return nfs4_proc_set_acl(inode
, buf
, buflen
);
4239 /* The getxattr man page suggests returning -ENODATA for unknown attributes,
4240 * and that's what we'll do for e.g. user attributes that haven't been set.
4241 * But we'll follow ext2/ext3's lead by returning -EOPNOTSUPP for unsupported
4242 * attributes in kernel-managed attribute namespaces. */
4243 ssize_t
nfs4_getxattr(struct dentry
*dentry
, const char *key
, void *buf
,
4246 struct inode
*inode
= dentry
->d_inode
;
4248 if (strcmp(key
, XATTR_NAME_NFSV4_ACL
) != 0)
4251 return nfs4_proc_get_acl(inode
, buf
, buflen
);
4254 ssize_t
nfs4_listxattr(struct dentry
*dentry
, char *buf
, size_t buflen
)
4256 size_t len
= strlen(XATTR_NAME_NFSV4_ACL
) + 1;
4258 if (!nfs4_server_supports_acls(NFS_SERVER(dentry
->d_inode
)))
4260 if (buf
&& buflen
< len
)
4263 memcpy(buf
, XATTR_NAME_NFSV4_ACL
, len
);
4267 static void nfs_fixup_referral_attributes(struct nfs_fattr
*fattr
)
4269 if (!((fattr
->valid
& NFS_ATTR_FATTR_FILEID
) &&
4270 (fattr
->valid
& NFS_ATTR_FATTR_FSID
) &&
4271 (fattr
->valid
& NFS_ATTR_FATTR_V4_REFERRAL
)))
4274 fattr
->valid
|= NFS_ATTR_FATTR_TYPE
| NFS_ATTR_FATTR_MODE
|
4275 NFS_ATTR_FATTR_NLINK
;
4276 fattr
->mode
= S_IFDIR
| S_IRUGO
| S_IXUGO
;
4280 int nfs4_proc_fs_locations(struct inode
*dir
, const struct qstr
*name
,
4281 struct nfs4_fs_locations
*fs_locations
, struct page
*page
)
4283 struct nfs_server
*server
= NFS_SERVER(dir
);
4285 [0] = FATTR4_WORD0_FSID
| FATTR4_WORD0_FS_LOCATIONS
,
4286 [1] = FATTR4_WORD1_MOUNTED_ON_FILEID
,
4288 struct nfs4_fs_locations_arg args
= {
4289 .dir_fh
= NFS_FH(dir
),
4294 struct nfs4_fs_locations_res res
= {
4295 .fs_locations
= fs_locations
,
4297 struct rpc_message msg
= {
4298 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_FS_LOCATIONS
],
4304 dprintk("%s: start\n", __func__
);
4305 nfs_fattr_init(&fs_locations
->fattr
);
4306 fs_locations
->server
= server
;
4307 fs_locations
->nlocations
= 0;
4308 status
= nfs4_call_sync(server
, &msg
, &args
, &res
, 0);
4309 nfs_fixup_referral_attributes(&fs_locations
->fattr
);
4310 dprintk("%s: returned status = %d\n", __func__
, status
);
4314 #ifdef CONFIG_NFS_V4_1
4316 * nfs4_proc_exchange_id()
4318 * Since the clientid has expired, all compounds using sessions
4319 * associated with the stale clientid will be returning
4320 * NFS4ERR_BADSESSION in the sequence operation, and will therefore
4321 * be in some phase of session reset.
4323 static int nfs4_proc_exchange_id(struct nfs_client
*clp
, struct rpc_cred
*cred
)
4325 nfs4_verifier verifier
;
4326 struct nfs41_exchange_id_args args
= {
4328 .flags
= clp
->cl_exchange_flags
,
4330 struct nfs41_exchange_id_res res
= {
4334 struct rpc_message msg
= {
4335 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_EXCHANGE_ID
],
4342 dprintk("--> %s\n", __func__
);
4343 BUG_ON(clp
== NULL
);
4345 p
= (u32
*)verifier
.data
;
4346 *p
++ = htonl((u32
)clp
->cl_boot_time
.tv_sec
);
4347 *p
= htonl((u32
)clp
->cl_boot_time
.tv_nsec
);
4348 args
.verifier
= &verifier
;
4351 args
.id_len
= scnprintf(args
.id
, sizeof(args
.id
),
4354 rpc_peeraddr2str(clp
->cl_rpcclient
,
4356 clp
->cl_id_uniquifier
);
4358 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, 0);
4360 if (status
!= NFS4ERR_CLID_INUSE
)
4366 if (++clp
->cl_id_uniquifier
== 0)
4370 dprintk("<-- %s status= %d\n", __func__
, status
);
4374 struct nfs4_get_lease_time_data
{
4375 struct nfs4_get_lease_time_args
*args
;
4376 struct nfs4_get_lease_time_res
*res
;
4377 struct nfs_client
*clp
;
4380 static void nfs4_get_lease_time_prepare(struct rpc_task
*task
,
4384 struct nfs4_get_lease_time_data
*data
=
4385 (struct nfs4_get_lease_time_data
*)calldata
;
4387 dprintk("--> %s\n", __func__
);
4388 /* just setup sequence, do not trigger session recovery
4389 since we're invoked within one */
4390 ret
= nfs41_setup_sequence(data
->clp
->cl_session
,
4391 &data
->args
->la_seq_args
,
4392 &data
->res
->lr_seq_res
, 0, task
);
4394 BUG_ON(ret
== -EAGAIN
);
4395 rpc_call_start(task
);
4396 dprintk("<-- %s\n", __func__
);
4400 * Called from nfs4_state_manager thread for session setup, so don't recover
4401 * from sequence operation or clientid errors.
4403 static void nfs4_get_lease_time_done(struct rpc_task
*task
, void *calldata
)
4405 struct nfs4_get_lease_time_data
*data
=
4406 (struct nfs4_get_lease_time_data
*)calldata
;
4408 dprintk("--> %s\n", __func__
);
4409 nfs41_sequence_done(data
->clp
, &data
->res
->lr_seq_res
, task
->tk_status
);
4410 switch (task
->tk_status
) {
4411 case -NFS4ERR_DELAY
:
4412 case -NFS4ERR_GRACE
:
4413 dprintk("%s Retry: tk_status %d\n", __func__
, task
->tk_status
);
4414 rpc_delay(task
, NFS4_POLL_RETRY_MIN
);
4415 task
->tk_status
= 0;
4416 nfs4_restart_rpc(task
, data
->clp
);
4419 nfs41_sequence_free_slot(data
->clp
, &data
->res
->lr_seq_res
);
4420 dprintk("<-- %s\n", __func__
);
4423 struct rpc_call_ops nfs4_get_lease_time_ops
= {
4424 .rpc_call_prepare
= nfs4_get_lease_time_prepare
,
4425 .rpc_call_done
= nfs4_get_lease_time_done
,
4428 int nfs4_proc_get_lease_time(struct nfs_client
*clp
, struct nfs_fsinfo
*fsinfo
)
4430 struct rpc_task
*task
;
4431 struct nfs4_get_lease_time_args args
;
4432 struct nfs4_get_lease_time_res res
= {
4433 .lr_fsinfo
= fsinfo
,
4435 struct nfs4_get_lease_time_data data
= {
4440 struct rpc_message msg
= {
4441 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GET_LEASE_TIME
],
4445 struct rpc_task_setup task_setup
= {
4446 .rpc_client
= clp
->cl_rpcclient
,
4447 .rpc_message
= &msg
,
4448 .callback_ops
= &nfs4_get_lease_time_ops
,
4449 .callback_data
= &data
4453 res
.lr_seq_res
.sr_slotid
= NFS4_MAX_SLOT_TABLE
;
4454 dprintk("--> %s\n", __func__
);
4455 task
= rpc_run_task(&task_setup
);
4458 status
= PTR_ERR(task
);
4460 status
= task
->tk_status
;
4463 dprintk("<-- %s return %d\n", __func__
, status
);
4469 * Reset a slot table
4471 static int nfs4_reset_slot_table(struct nfs4_slot_table
*tbl
, int max_slots
,
4472 int old_max_slots
, int ivalue
)
4477 dprintk("--> %s: max_reqs=%u, tbl %p\n", __func__
, max_slots
, tbl
);
4480 * Until we have dynamic slot table adjustment, insist
4481 * upon the same slot table size
4483 if (max_slots
!= old_max_slots
) {
4484 dprintk("%s reset slot table does't match old\n",
4486 ret
= -EINVAL
; /*XXX NFS4ERR_REQ_TOO_BIG ? */
4489 spin_lock(&tbl
->slot_tbl_lock
);
4490 for (i
= 0; i
< max_slots
; ++i
)
4491 tbl
->slots
[i
].seq_nr
= ivalue
;
4492 tbl
->highest_used_slotid
= -1;
4493 spin_unlock(&tbl
->slot_tbl_lock
);
4494 dprintk("%s: tbl=%p slots=%p max_slots=%d\n", __func__
,
4495 tbl
, tbl
->slots
, tbl
->max_slots
);
4497 dprintk("<-- %s: return %d\n", __func__
, ret
);
4502 * Reset the forechannel and backchannel slot tables
4504 static int nfs4_reset_slot_tables(struct nfs4_session
*session
)
4508 status
= nfs4_reset_slot_table(&session
->fc_slot_table
,
4509 session
->fc_attrs
.max_reqs
,
4510 session
->fc_slot_table
.max_slots
,
4515 status
= nfs4_reset_slot_table(&session
->bc_slot_table
,
4516 session
->bc_attrs
.max_reqs
,
4517 session
->bc_slot_table
.max_slots
,
4522 /* Destroy the slot table */
4523 static void nfs4_destroy_slot_tables(struct nfs4_session
*session
)
4525 if (session
->fc_slot_table
.slots
!= NULL
) {
4526 kfree(session
->fc_slot_table
.slots
);
4527 session
->fc_slot_table
.slots
= NULL
;
4529 if (session
->bc_slot_table
.slots
!= NULL
) {
4530 kfree(session
->bc_slot_table
.slots
);
4531 session
->bc_slot_table
.slots
= NULL
;
4537 * Initialize slot table
4539 static int nfs4_init_slot_table(struct nfs4_slot_table
*tbl
,
4540 int max_slots
, int ivalue
)
4543 struct nfs4_slot
*slot
;
4546 BUG_ON(max_slots
> NFS4_MAX_SLOT_TABLE
);
4548 dprintk("--> %s: max_reqs=%u\n", __func__
, max_slots
);
4550 slot
= kcalloc(max_slots
, sizeof(struct nfs4_slot
), GFP_KERNEL
);
4553 for (i
= 0; i
< max_slots
; ++i
)
4554 slot
[i
].seq_nr
= ivalue
;
4557 spin_lock(&tbl
->slot_tbl_lock
);
4558 if (tbl
->slots
!= NULL
) {
4559 spin_unlock(&tbl
->slot_tbl_lock
);
4560 dprintk("%s: slot table already initialized. tbl=%p slots=%p\n",
4561 __func__
, tbl
, tbl
->slots
);
4565 tbl
->max_slots
= max_slots
;
4567 tbl
->highest_used_slotid
= -1; /* no slot is currently used */
4568 spin_unlock(&tbl
->slot_tbl_lock
);
4569 dprintk("%s: tbl=%p slots=%p max_slots=%d\n", __func__
,
4570 tbl
, tbl
->slots
, tbl
->max_slots
);
4572 dprintk("<-- %s: return %d\n", __func__
, ret
);
4581 * Initialize the forechannel and backchannel tables
4583 static int nfs4_init_slot_tables(struct nfs4_session
*session
)
4587 status
= nfs4_init_slot_table(&session
->fc_slot_table
,
4588 session
->fc_attrs
.max_reqs
, 1);
4592 status
= nfs4_init_slot_table(&session
->bc_slot_table
,
4593 session
->bc_attrs
.max_reqs
, 0);
4595 nfs4_destroy_slot_tables(session
);
4600 struct nfs4_session
*nfs4_alloc_session(struct nfs_client
*clp
)
4602 struct nfs4_session
*session
;
4603 struct nfs4_slot_table
*tbl
;
4605 session
= kzalloc(sizeof(struct nfs4_session
), GFP_KERNEL
);
4609 set_bit(NFS4CLNT_SESSION_SETUP
, &clp
->cl_state
);
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
;
4618 tbl
= &session
->fc_slot_table
;
4619 spin_lock_init(&tbl
->slot_tbl_lock
);
4620 rpc_init_wait_queue(&tbl
->slot_tbl_waitq
, "ForeChannel Slot table");
4622 tbl
= &session
->bc_slot_table
;
4623 spin_lock_init(&tbl
->slot_tbl_lock
);
4624 rpc_init_wait_queue(&tbl
->slot_tbl_waitq
, "BackChannel Slot table");
4630 void nfs4_destroy_session(struct nfs4_session
*session
)
4632 nfs4_proc_destroy_session(session
);
4633 dprintk("%s Destroy backchannel for xprt %p\n",
4634 __func__
, session
->clp
->cl_rpcclient
->cl_xprt
);
4635 xprt_destroy_backchannel(session
->clp
->cl_rpcclient
->cl_xprt
,
4636 NFS41_BC_MIN_CALLBACKS
);
4637 nfs4_destroy_slot_tables(session
);
4642 * Initialize the values to be used by the client in CREATE_SESSION
4643 * If nfs4_init_session set the fore channel request and response sizes,
4646 * Set the back channel max_resp_sz_cached to zero to force the client to
4647 * always set csa_cachethis to FALSE because the current implementation
4648 * of the back channel DRC only supports caching the CB_SEQUENCE operation.
4650 static void nfs4_init_channel_attrs(struct nfs41_create_session_args
*args
)
4652 struct nfs4_session
*session
= args
->client
->cl_session
;
4653 unsigned int mxrqst_sz
= session
->fc_attrs
.max_rqst_sz
,
4654 mxresp_sz
= session
->fc_attrs
.max_resp_sz
;
4657 mxrqst_sz
= NFS_MAX_FILE_IO_SIZE
;
4659 mxresp_sz
= NFS_MAX_FILE_IO_SIZE
;
4660 /* Fore channel attributes */
4661 args
->fc_attrs
.headerpadsz
= 0;
4662 args
->fc_attrs
.max_rqst_sz
= mxrqst_sz
;
4663 args
->fc_attrs
.max_resp_sz
= mxresp_sz
;
4664 args
->fc_attrs
.max_resp_sz_cached
= mxresp_sz
;
4665 args
->fc_attrs
.max_ops
= NFS4_MAX_OPS
;
4666 args
->fc_attrs
.max_reqs
= session
->clp
->cl_rpcclient
->cl_xprt
->max_reqs
;
4668 dprintk("%s: Fore Channel : max_rqst_sz=%u max_resp_sz=%u "
4669 "max_resp_sz_cached=%u max_ops=%u max_reqs=%u\n",
4671 args
->fc_attrs
.max_rqst_sz
, args
->fc_attrs
.max_resp_sz
,
4672 args
->fc_attrs
.max_resp_sz_cached
, args
->fc_attrs
.max_ops
,
4673 args
->fc_attrs
.max_reqs
);
4675 /* Back channel attributes */
4676 args
->bc_attrs
.headerpadsz
= 0;
4677 args
->bc_attrs
.max_rqst_sz
= PAGE_SIZE
;
4678 args
->bc_attrs
.max_resp_sz
= PAGE_SIZE
;
4679 args
->bc_attrs
.max_resp_sz_cached
= 0;
4680 args
->bc_attrs
.max_ops
= NFS4_MAX_BACK_CHANNEL_OPS
;
4681 args
->bc_attrs
.max_reqs
= 1;
4683 dprintk("%s: Back Channel : max_rqst_sz=%u max_resp_sz=%u "
4684 "max_resp_sz_cached=%u max_ops=%u max_reqs=%u\n",
4686 args
->bc_attrs
.max_rqst_sz
, args
->bc_attrs
.max_resp_sz
,
4687 args
->bc_attrs
.max_resp_sz_cached
, args
->bc_attrs
.max_ops
,
4688 args
->bc_attrs
.max_reqs
);
4691 static int _verify_channel_attr(char *chan
, char *attr_name
, u32 sent
, u32 rcvd
)
4695 printk(KERN_WARNING
"%s: Session INVALID: %s channel %s increased. "
4696 "sent=%u rcvd=%u\n", __func__
, chan
, attr_name
, sent
, rcvd
);
4700 #define _verify_fore_channel_attr(_name_) \
4701 _verify_channel_attr("fore", #_name_, \
4702 args->fc_attrs._name_, \
4703 session->fc_attrs._name_)
4705 #define _verify_back_channel_attr(_name_) \
4706 _verify_channel_attr("back", #_name_, \
4707 args->bc_attrs._name_, \
4708 session->bc_attrs._name_)
4711 * The server is not allowed to increase the fore channel header pad size,
4712 * maximum response size, or maximum number of operations.
4714 * The back channel attributes are only negotiatied down: We send what the
4715 * (back channel) server insists upon.
4717 static int nfs4_verify_channel_attrs(struct nfs41_create_session_args
*args
,
4718 struct nfs4_session
*session
)
4722 ret
|= _verify_fore_channel_attr(headerpadsz
);
4723 ret
|= _verify_fore_channel_attr(max_resp_sz
);
4724 ret
|= _verify_fore_channel_attr(max_ops
);
4726 ret
|= _verify_back_channel_attr(headerpadsz
);
4727 ret
|= _verify_back_channel_attr(max_rqst_sz
);
4728 ret
|= _verify_back_channel_attr(max_resp_sz
);
4729 ret
|= _verify_back_channel_attr(max_resp_sz_cached
);
4730 ret
|= _verify_back_channel_attr(max_ops
);
4731 ret
|= _verify_back_channel_attr(max_reqs
);
4736 static int _nfs4_proc_create_session(struct nfs_client
*clp
)
4738 struct nfs4_session
*session
= clp
->cl_session
;
4739 struct nfs41_create_session_args args
= {
4741 .cb_program
= NFS4_CALLBACK
,
4743 struct nfs41_create_session_res res
= {
4746 struct rpc_message msg
= {
4747 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_CREATE_SESSION
],
4753 nfs4_init_channel_attrs(&args
);
4754 args
.flags
= (SESSION4_PERSIST
| SESSION4_BACK_CHAN
);
4756 status
= rpc_call_sync(session
->clp
->cl_rpcclient
, &msg
, 0);
4759 /* Verify the session's negotiated channel_attrs values */
4760 status
= nfs4_verify_channel_attrs(&args
, session
);
4762 /* Increment the clientid slot sequence id */
4770 * Issues a CREATE_SESSION operation to the server.
4771 * It is the responsibility of the caller to verify the session is
4772 * expired before calling this routine.
4774 int nfs4_proc_create_session(struct nfs_client
*clp
, int reset
)
4778 struct nfs_fsinfo fsinfo
;
4779 struct nfs4_session
*session
= clp
->cl_session
;
4781 dprintk("--> %s clp=%p session=%p\n", __func__
, clp
, session
);
4783 status
= _nfs4_proc_create_session(clp
);
4787 /* Init or reset the fore channel */
4789 status
= nfs4_reset_slot_tables(session
);
4791 status
= nfs4_init_slot_tables(session
);
4792 dprintk("fore channel slot table initialization returned %d\n", status
);
4796 ptr
= (unsigned *)&session
->sess_id
.data
[0];
4797 dprintk("%s client>seqid %d sessionid %u:%u:%u:%u\n", __func__
,
4798 clp
->cl_seqid
, ptr
[0], ptr
[1], ptr
[2], ptr
[3]);
4801 /* Lease time is aleady set */
4804 /* Get the lease time */
4805 status
= nfs4_proc_get_lease_time(clp
, &fsinfo
);
4807 /* Update lease time and schedule renewal */
4808 spin_lock(&clp
->cl_lock
);
4809 clp
->cl_lease_time
= fsinfo
.lease_time
* HZ
;
4810 clp
->cl_last_renewal
= jiffies
;
4811 clear_bit(NFS4CLNT_LEASE_EXPIRED
, &clp
->cl_state
);
4812 spin_unlock(&clp
->cl_lock
);
4814 nfs4_schedule_state_renewal(clp
);
4817 dprintk("<-- %s\n", __func__
);
4822 * Issue the over-the-wire RPC DESTROY_SESSION.
4823 * The caller must serialize access to this routine.
4825 int nfs4_proc_destroy_session(struct nfs4_session
*session
)
4828 struct rpc_message msg
;
4830 dprintk("--> nfs4_proc_destroy_session\n");
4832 /* session is still being setup */
4833 if (session
->clp
->cl_cons_state
!= NFS_CS_READY
)
4836 msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_DESTROY_SESSION
];
4837 msg
.rpc_argp
= session
;
4838 msg
.rpc_resp
= NULL
;
4839 msg
.rpc_cred
= NULL
;
4840 status
= rpc_call_sync(session
->clp
->cl_rpcclient
, &msg
, 0);
4844 "Got error %d from the server on DESTROY_SESSION. "
4845 "Session has been destroyed regardless...\n", status
);
4847 dprintk("<-- nfs4_proc_destroy_session\n");
4851 int nfs4_init_session(struct nfs_server
*server
)
4853 struct nfs_client
*clp
= server
->nfs_client
;
4856 if (!nfs4_has_session(clp
))
4859 clp
->cl_session
->fc_attrs
.max_rqst_sz
= server
->wsize
;
4860 clp
->cl_session
->fc_attrs
.max_resp_sz
= server
->rsize
;
4861 ret
= nfs4_recover_expired_lease(server
);
4863 ret
= nfs4_check_client_ready(clp
);
4868 * Renew the cl_session lease.
4870 static int nfs4_proc_sequence(struct nfs_client
*clp
, struct rpc_cred
*cred
)
4872 struct nfs4_sequence_args args
;
4873 struct nfs4_sequence_res res
;
4875 struct rpc_message msg
= {
4876 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SEQUENCE
],
4882 args
.sa_cache_this
= 0;
4884 return nfs4_call_sync_sequence(clp
, clp
->cl_rpcclient
, &msg
, &args
,
4888 void nfs41_sequence_call_done(struct rpc_task
*task
, void *data
)
4890 struct nfs_client
*clp
= (struct nfs_client
*)data
;
4892 nfs41_sequence_done(clp
, task
->tk_msg
.rpc_resp
, task
->tk_status
);
4894 if (task
->tk_status
< 0) {
4895 dprintk("%s ERROR %d\n", __func__
, task
->tk_status
);
4897 if (_nfs4_async_handle_error(task
, NULL
, clp
, NULL
)
4899 nfs4_restart_rpc(task
, clp
);
4903 nfs41_sequence_free_slot(clp
, task
->tk_msg
.rpc_resp
);
4904 dprintk("%s rpc_cred %p\n", __func__
, task
->tk_msg
.rpc_cred
);
4906 kfree(task
->tk_msg
.rpc_argp
);
4907 kfree(task
->tk_msg
.rpc_resp
);
4909 dprintk("<-- %s\n", __func__
);
4912 static void nfs41_sequence_prepare(struct rpc_task
*task
, void *data
)
4914 struct nfs_client
*clp
;
4915 struct nfs4_sequence_args
*args
;
4916 struct nfs4_sequence_res
*res
;
4918 clp
= (struct nfs_client
*)data
;
4919 args
= task
->tk_msg
.rpc_argp
;
4920 res
= task
->tk_msg
.rpc_resp
;
4922 if (nfs4_setup_sequence(clp
, args
, res
, 0, task
))
4924 rpc_call_start(task
);
4927 static const struct rpc_call_ops nfs41_sequence_ops
= {
4928 .rpc_call_done
= nfs41_sequence_call_done
,
4929 .rpc_call_prepare
= nfs41_sequence_prepare
,
4932 static int nfs41_proc_async_sequence(struct nfs_client
*clp
,
4933 struct rpc_cred
*cred
)
4935 struct nfs4_sequence_args
*args
;
4936 struct nfs4_sequence_res
*res
;
4937 struct rpc_message msg
= {
4938 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SEQUENCE
],
4942 args
= kzalloc(sizeof(*args
), GFP_KERNEL
);
4945 res
= kzalloc(sizeof(*res
), GFP_KERNEL
);
4950 res
->sr_slotid
= NFS4_MAX_SLOT_TABLE
;
4951 msg
.rpc_argp
= args
;
4954 return rpc_call_async(clp
->cl_rpcclient
, &msg
, RPC_TASK_SOFT
,
4955 &nfs41_sequence_ops
, (void *)clp
);
4958 #endif /* CONFIG_NFS_V4_1 */
4960 struct nfs4_state_recovery_ops nfs40_reboot_recovery_ops
= {
4961 .owner_flag_bit
= NFS_OWNER_RECLAIM_REBOOT
,
4962 .state_flag_bit
= NFS_STATE_RECLAIM_REBOOT
,
4963 .recover_open
= nfs4_open_reclaim
,
4964 .recover_lock
= nfs4_lock_reclaim
,
4965 .establish_clid
= nfs4_init_clientid
,
4966 .get_clid_cred
= nfs4_get_setclientid_cred
,
4969 #if defined(CONFIG_NFS_V4_1)
4970 struct nfs4_state_recovery_ops nfs41_reboot_recovery_ops
= {
4971 .owner_flag_bit
= NFS_OWNER_RECLAIM_REBOOT
,
4972 .state_flag_bit
= NFS_STATE_RECLAIM_REBOOT
,
4973 .recover_open
= nfs4_open_reclaim
,
4974 .recover_lock
= nfs4_lock_reclaim
,
4975 .establish_clid
= nfs4_proc_exchange_id
,
4976 .get_clid_cred
= nfs4_get_exchange_id_cred
,
4978 #endif /* CONFIG_NFS_V4_1 */
4980 struct nfs4_state_recovery_ops nfs40_nograce_recovery_ops
= {
4981 .owner_flag_bit
= NFS_OWNER_RECLAIM_NOGRACE
,
4982 .state_flag_bit
= NFS_STATE_RECLAIM_NOGRACE
,
4983 .recover_open
= nfs4_open_expired
,
4984 .recover_lock
= nfs4_lock_expired
,
4985 .establish_clid
= nfs4_init_clientid
,
4986 .get_clid_cred
= nfs4_get_setclientid_cred
,
4989 #if defined(CONFIG_NFS_V4_1)
4990 struct nfs4_state_recovery_ops nfs41_nograce_recovery_ops
= {
4991 .owner_flag_bit
= NFS_OWNER_RECLAIM_NOGRACE
,
4992 .state_flag_bit
= NFS_STATE_RECLAIM_NOGRACE
,
4993 .recover_open
= nfs4_open_expired
,
4994 .recover_lock
= nfs4_lock_expired
,
4995 .establish_clid
= nfs4_proc_exchange_id
,
4996 .get_clid_cred
= nfs4_get_exchange_id_cred
,
4998 #endif /* CONFIG_NFS_V4_1 */
5000 struct nfs4_state_maintenance_ops nfs40_state_renewal_ops
= {
5001 .sched_state_renewal
= nfs4_proc_async_renew
,
5002 .get_state_renewal_cred_locked
= nfs4_get_renew_cred_locked
,
5003 .renew_lease
= nfs4_proc_renew
,
5006 #if defined(CONFIG_NFS_V4_1)
5007 struct nfs4_state_maintenance_ops nfs41_state_renewal_ops
= {
5008 .sched_state_renewal
= nfs41_proc_async_sequence
,
5009 .get_state_renewal_cred_locked
= nfs4_get_machine_cred_locked
,
5010 .renew_lease
= nfs4_proc_sequence
,
5015 * Per minor version reboot and network partition recovery ops
5018 struct nfs4_state_recovery_ops
*nfs4_reboot_recovery_ops
[] = {
5019 &nfs40_reboot_recovery_ops
,
5020 #if defined(CONFIG_NFS_V4_1)
5021 &nfs41_reboot_recovery_ops
,
5025 struct nfs4_state_recovery_ops
*nfs4_nograce_recovery_ops
[] = {
5026 &nfs40_nograce_recovery_ops
,
5027 #if defined(CONFIG_NFS_V4_1)
5028 &nfs41_nograce_recovery_ops
,
5032 struct nfs4_state_maintenance_ops
*nfs4_state_renewal_ops
[] = {
5033 &nfs40_state_renewal_ops
,
5034 #if defined(CONFIG_NFS_V4_1)
5035 &nfs41_state_renewal_ops
,
5039 static const struct inode_operations nfs4_file_inode_operations
= {
5040 .permission
= nfs_permission
,
5041 .getattr
= nfs_getattr
,
5042 .setattr
= nfs_setattr
,
5043 .getxattr
= nfs4_getxattr
,
5044 .setxattr
= nfs4_setxattr
,
5045 .listxattr
= nfs4_listxattr
,
5048 const struct nfs_rpc_ops nfs_v4_clientops
= {
5049 .version
= 4, /* protocol version */
5050 .dentry_ops
= &nfs4_dentry_operations
,
5051 .dir_inode_ops
= &nfs4_dir_inode_operations
,
5052 .file_inode_ops
= &nfs4_file_inode_operations
,
5053 .getroot
= nfs4_proc_get_root
,
5054 .getattr
= nfs4_proc_getattr
,
5055 .setattr
= nfs4_proc_setattr
,
5056 .lookupfh
= nfs4_proc_lookupfh
,
5057 .lookup
= nfs4_proc_lookup
,
5058 .access
= nfs4_proc_access
,
5059 .readlink
= nfs4_proc_readlink
,
5060 .create
= nfs4_proc_create
,
5061 .remove
= nfs4_proc_remove
,
5062 .unlink_setup
= nfs4_proc_unlink_setup
,
5063 .unlink_done
= nfs4_proc_unlink_done
,
5064 .rename
= nfs4_proc_rename
,
5065 .link
= nfs4_proc_link
,
5066 .symlink
= nfs4_proc_symlink
,
5067 .mkdir
= nfs4_proc_mkdir
,
5068 .rmdir
= nfs4_proc_remove
,
5069 .readdir
= nfs4_proc_readdir
,
5070 .mknod
= nfs4_proc_mknod
,
5071 .statfs
= nfs4_proc_statfs
,
5072 .fsinfo
= nfs4_proc_fsinfo
,
5073 .pathconf
= nfs4_proc_pathconf
,
5074 .set_capabilities
= nfs4_server_capabilities
,
5075 .decode_dirent
= nfs4_decode_dirent
,
5076 .read_setup
= nfs4_proc_read_setup
,
5077 .read_done
= nfs4_read_done
,
5078 .write_setup
= nfs4_proc_write_setup
,
5079 .write_done
= nfs4_write_done
,
5080 .commit_setup
= nfs4_proc_commit_setup
,
5081 .commit_done
= nfs4_commit_done
,
5082 .lock
= nfs4_proc_lock
,
5083 .clear_acl_cache
= nfs4_zap_acl_attr
,
5084 .close_context
= nfs4_close_context
,