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_RESET
, &clp
->cl_state
);
274 exception
->retry
= 1;
276 #endif /* !defined(CONFIG_NFS_V4_1) */
277 case -NFS4ERR_FILE_OPEN
:
278 if (exception
->timeout
> HZ
) {
279 /* We have retried a decent amount, time to
287 ret
= nfs4_delay(server
->client
, &exception
->timeout
);
290 case -NFS4ERR_OLD_STATEID
:
291 exception
->retry
= 1;
293 /* We failed to handle the error */
294 return nfs4_map_errors(ret
);
298 static void renew_lease(const struct nfs_server
*server
, unsigned long timestamp
)
300 struct nfs_client
*clp
= server
->nfs_client
;
301 spin_lock(&clp
->cl_lock
);
302 if (time_before(clp
->cl_last_renewal
,timestamp
))
303 clp
->cl_last_renewal
= timestamp
;
304 spin_unlock(&clp
->cl_lock
);
307 #if defined(CONFIG_NFS_V4_1)
310 * nfs4_free_slot - free a slot and efficiently update slot table.
312 * freeing a slot is trivially done by clearing its respective bit
314 * If the freed slotid equals highest_used_slotid we want to update it
315 * so that the server would be able to size down the slot table if needed,
316 * otherwise we know that the highest_used_slotid is still in use.
317 * When updating highest_used_slotid there may be "holes" in the bitmap
318 * so we need to scan down from highest_used_slotid to 0 looking for the now
319 * highest slotid in use.
320 * If none found, highest_used_slotid is set to -1.
323 nfs4_free_slot(struct nfs4_slot_table
*tbl
, u8 free_slotid
)
325 int slotid
= free_slotid
;
327 spin_lock(&tbl
->slot_tbl_lock
);
328 /* clear used bit in bitmap */
329 __clear_bit(slotid
, tbl
->used_slots
);
331 /* update highest_used_slotid when it is freed */
332 if (slotid
== tbl
->highest_used_slotid
) {
333 slotid
= find_last_bit(tbl
->used_slots
, tbl
->max_slots
);
334 if (slotid
>= 0 && slotid
< tbl
->max_slots
)
335 tbl
->highest_used_slotid
= slotid
;
337 tbl
->highest_used_slotid
= -1;
339 rpc_wake_up_next(&tbl
->slot_tbl_waitq
);
340 spin_unlock(&tbl
->slot_tbl_lock
);
341 dprintk("%s: free_slotid %u highest_used_slotid %d\n", __func__
,
342 free_slotid
, tbl
->highest_used_slotid
);
345 void nfs41_sequence_free_slot(const struct nfs_client
*clp
,
346 struct nfs4_sequence_res
*res
)
348 struct nfs4_slot_table
*tbl
;
350 if (!nfs4_has_session(clp
)) {
351 dprintk("%s: No session\n", __func__
);
354 tbl
= &clp
->cl_session
->fc_slot_table
;
355 if (res
->sr_slotid
== NFS4_MAX_SLOT_TABLE
) {
356 dprintk("%s: No slot\n", __func__
);
357 /* just wake up the next guy waiting since
358 * we may have not consumed a slot after all */
359 rpc_wake_up_next(&tbl
->slot_tbl_waitq
);
362 nfs4_free_slot(tbl
, res
->sr_slotid
);
363 res
->sr_slotid
= NFS4_MAX_SLOT_TABLE
;
366 static void nfs41_sequence_done(struct nfs_client
*clp
,
367 struct nfs4_sequence_res
*res
,
370 unsigned long timestamp
;
371 struct nfs4_slot_table
*tbl
;
372 struct nfs4_slot
*slot
;
375 * sr_status remains 1 if an RPC level error occurred. The server
376 * may or may not have processed the sequence operation..
377 * Proceed as if the server received and processed the sequence
380 if (res
->sr_status
== 1)
381 res
->sr_status
= NFS_OK
;
383 /* -ERESTARTSYS can result in skipping nfs41_sequence_setup */
384 if (res
->sr_slotid
== NFS4_MAX_SLOT_TABLE
)
387 tbl
= &clp
->cl_session
->fc_slot_table
;
388 slot
= tbl
->slots
+ res
->sr_slotid
;
390 if (res
->sr_status
== 0) {
391 /* Update the slot's sequence and clientid lease timer */
393 timestamp
= res
->sr_renewal_time
;
394 spin_lock(&clp
->cl_lock
);
395 if (time_before(clp
->cl_last_renewal
, timestamp
))
396 clp
->cl_last_renewal
= timestamp
;
397 spin_unlock(&clp
->cl_lock
);
401 /* The session may be reset by one of the error handlers. */
402 dprintk("%s: Error %d free the slot \n", __func__
, res
->sr_status
);
403 nfs41_sequence_free_slot(clp
, res
);
407 * nfs4_find_slot - efficiently look for a free slot
409 * nfs4_find_slot looks for an unset bit in the used_slots bitmap.
410 * If found, we mark the slot as used, update the highest_used_slotid,
411 * and respectively set up the sequence operation args.
412 * The slot number is returned if found, or NFS4_MAX_SLOT_TABLE otherwise.
414 * Note: must be called with under the slot_tbl_lock.
417 nfs4_find_slot(struct nfs4_slot_table
*tbl
, struct rpc_task
*task
)
420 u8 ret_id
= NFS4_MAX_SLOT_TABLE
;
421 BUILD_BUG_ON((u8
)NFS4_MAX_SLOT_TABLE
!= (int)NFS4_MAX_SLOT_TABLE
);
423 dprintk("--> %s used_slots=%04lx highest_used=%d max_slots=%d\n",
424 __func__
, tbl
->used_slots
[0], tbl
->highest_used_slotid
,
426 slotid
= find_first_zero_bit(tbl
->used_slots
, tbl
->max_slots
);
427 if (slotid
>= tbl
->max_slots
)
429 __set_bit(slotid
, tbl
->used_slots
);
430 if (slotid
> tbl
->highest_used_slotid
)
431 tbl
->highest_used_slotid
= slotid
;
434 dprintk("<-- %s used_slots=%04lx highest_used=%d slotid=%d \n",
435 __func__
, tbl
->used_slots
[0], tbl
->highest_used_slotid
, ret_id
);
439 static int nfs4_recover_session(struct nfs4_session
*session
)
441 struct nfs_client
*clp
= session
->clp
;
445 for (loop
= NFS4_MAX_LOOP_ON_RECOVER
; loop
!= 0; loop
--) {
446 ret
= nfs4_wait_clnt_recover(clp
);
449 if (!test_bit(NFS4CLNT_SESSION_RESET
, &clp
->cl_state
))
451 nfs4_schedule_state_manager(clp
);
457 static int nfs41_setup_sequence(struct nfs4_session
*session
,
458 struct nfs4_sequence_args
*args
,
459 struct nfs4_sequence_res
*res
,
461 struct rpc_task
*task
)
463 struct nfs4_slot
*slot
;
464 struct nfs4_slot_table
*tbl
;
468 dprintk("--> %s\n", __func__
);
469 /* slot already allocated? */
470 if (res
->sr_slotid
!= NFS4_MAX_SLOT_TABLE
)
473 memset(res
, 0, sizeof(*res
));
474 res
->sr_slotid
= NFS4_MAX_SLOT_TABLE
;
475 tbl
= &session
->fc_slot_table
;
477 spin_lock(&tbl
->slot_tbl_lock
);
478 if (test_bit(NFS4CLNT_SESSION_RESET
, &session
->clp
->cl_state
)) {
479 if (tbl
->highest_used_slotid
!= -1) {
480 rpc_sleep_on(&tbl
->slot_tbl_waitq
, task
, NULL
);
481 spin_unlock(&tbl
->slot_tbl_lock
);
482 dprintk("<-- %s: Session reset: draining\n", __func__
);
486 /* The slot table is empty; start the reset thread */
487 dprintk("%s Session Reset\n", __func__
);
488 spin_unlock(&tbl
->slot_tbl_lock
);
489 status
= nfs4_recover_session(session
);
492 spin_lock(&tbl
->slot_tbl_lock
);
495 slotid
= nfs4_find_slot(tbl
, task
);
496 if (slotid
== NFS4_MAX_SLOT_TABLE
) {
497 rpc_sleep_on(&tbl
->slot_tbl_waitq
, task
, NULL
);
498 spin_unlock(&tbl
->slot_tbl_lock
);
499 dprintk("<-- %s: no free slots\n", __func__
);
502 spin_unlock(&tbl
->slot_tbl_lock
);
504 slot
= tbl
->slots
+ slotid
;
505 args
->sa_session
= session
;
506 args
->sa_slotid
= slotid
;
507 args
->sa_cache_this
= cache_reply
;
509 dprintk("<-- %s slotid=%d seqid=%d\n", __func__
, slotid
, slot
->seq_nr
);
511 res
->sr_session
= session
;
512 res
->sr_slotid
= slotid
;
513 res
->sr_renewal_time
= jiffies
;
515 * sr_status is only set in decode_sequence, and so will remain
516 * set to 1 if an rpc level failure occurs.
522 int nfs4_setup_sequence(struct nfs_client
*clp
,
523 struct nfs4_sequence_args
*args
,
524 struct nfs4_sequence_res
*res
,
526 struct rpc_task
*task
)
530 dprintk("--> %s clp %p session %p sr_slotid %d\n",
531 __func__
, clp
, clp
->cl_session
, res
->sr_slotid
);
533 if (!nfs4_has_session(clp
))
535 ret
= nfs41_setup_sequence(clp
->cl_session
, args
, res
, cache_reply
,
537 if (ret
!= -EAGAIN
) {
538 /* terminate rpc task */
539 task
->tk_status
= ret
;
540 task
->tk_action
= NULL
;
543 dprintk("<-- %s status=%d\n", __func__
, ret
);
547 struct nfs41_call_sync_data
{
548 struct nfs_client
*clp
;
549 struct nfs4_sequence_args
*seq_args
;
550 struct nfs4_sequence_res
*seq_res
;
554 static void nfs41_call_sync_prepare(struct rpc_task
*task
, void *calldata
)
556 struct nfs41_call_sync_data
*data
= calldata
;
558 dprintk("--> %s data->clp->cl_session %p\n", __func__
,
559 data
->clp
->cl_session
);
560 if (nfs4_setup_sequence(data
->clp
, data
->seq_args
,
561 data
->seq_res
, data
->cache_reply
, task
))
563 rpc_call_start(task
);
566 static void nfs41_call_sync_done(struct rpc_task
*task
, void *calldata
)
568 struct nfs41_call_sync_data
*data
= calldata
;
570 nfs41_sequence_done(data
->clp
, data
->seq_res
, task
->tk_status
);
571 nfs41_sequence_free_slot(data
->clp
, data
->seq_res
);
574 struct rpc_call_ops nfs41_call_sync_ops
= {
575 .rpc_call_prepare
= nfs41_call_sync_prepare
,
576 .rpc_call_done
= nfs41_call_sync_done
,
579 static int nfs4_call_sync_sequence(struct nfs_client
*clp
,
580 struct rpc_clnt
*clnt
,
581 struct rpc_message
*msg
,
582 struct nfs4_sequence_args
*args
,
583 struct nfs4_sequence_res
*res
,
587 struct rpc_task
*task
;
588 struct nfs41_call_sync_data data
= {
592 .cache_reply
= cache_reply
,
594 struct rpc_task_setup task_setup
= {
597 .callback_ops
= &nfs41_call_sync_ops
,
598 .callback_data
= &data
601 res
->sr_slotid
= NFS4_MAX_SLOT_TABLE
;
602 task
= rpc_run_task(&task_setup
);
606 ret
= task
->tk_status
;
612 int _nfs4_call_sync_session(struct nfs_server
*server
,
613 struct rpc_message
*msg
,
614 struct nfs4_sequence_args
*args
,
615 struct nfs4_sequence_res
*res
,
618 return nfs4_call_sync_sequence(server
->nfs_client
, server
->client
,
619 msg
, args
, res
, cache_reply
);
622 #endif /* CONFIG_NFS_V4_1 */
624 int _nfs4_call_sync(struct nfs_server
*server
,
625 struct rpc_message
*msg
,
626 struct nfs4_sequence_args
*args
,
627 struct nfs4_sequence_res
*res
,
630 args
->sa_session
= res
->sr_session
= NULL
;
631 return rpc_call_sync(server
->client
, msg
, 0);
634 #define nfs4_call_sync(server, msg, args, res, cache_reply) \
635 (server)->nfs_client->cl_call_sync((server), (msg), &(args)->seq_args, \
636 &(res)->seq_res, (cache_reply))
638 static void nfs4_sequence_done(const struct nfs_server
*server
,
639 struct nfs4_sequence_res
*res
, int rpc_status
)
641 #ifdef CONFIG_NFS_V4_1
642 if (nfs4_has_session(server
->nfs_client
))
643 nfs41_sequence_done(server
->nfs_client
, res
, rpc_status
);
644 #endif /* CONFIG_NFS_V4_1 */
647 void nfs4_restart_rpc(struct rpc_task
*task
, const struct nfs_client
*clp
,
648 struct nfs4_sequence_res
*res
)
650 #ifdef CONFIG_NFS_V4_1
651 if (nfs4_has_session(clp
)) {
652 nfs41_sequence_free_slot(clp
, res
);
653 rpc_restart_call_prepare(task
);
656 #endif /* CONFIG_NFS_V4_1 */
657 rpc_restart_call(task
);
660 /* no restart, therefore free slot here */
661 static void nfs4_sequence_done_free_slot(const struct nfs_server
*server
,
662 struct nfs4_sequence_res
*res
,
665 nfs4_sequence_done(server
, res
, rpc_status
);
666 nfs4_sequence_free_slot(server
->nfs_client
, res
);
669 static void update_changeattr(struct inode
*dir
, struct nfs4_change_info
*cinfo
)
671 struct nfs_inode
*nfsi
= NFS_I(dir
);
673 spin_lock(&dir
->i_lock
);
674 nfsi
->cache_validity
|= NFS_INO_INVALID_ATTR
|NFS_INO_REVAL_PAGECACHE
|NFS_INO_INVALID_DATA
;
675 if (!cinfo
->atomic
|| cinfo
->before
!= nfsi
->change_attr
)
676 nfs_force_lookup_revalidate(dir
);
677 nfsi
->change_attr
= cinfo
->after
;
678 spin_unlock(&dir
->i_lock
);
681 struct nfs4_opendata
{
683 struct nfs_openargs o_arg
;
684 struct nfs_openres o_res
;
685 struct nfs_open_confirmargs c_arg
;
686 struct nfs_open_confirmres c_res
;
687 struct nfs_fattr f_attr
;
688 struct nfs_fattr dir_attr
;
691 struct nfs4_state_owner
*owner
;
692 struct nfs4_state
*state
;
694 unsigned long timestamp
;
695 unsigned int rpc_done
: 1;
701 static void nfs4_init_opendata_res(struct nfs4_opendata
*p
)
703 p
->o_res
.f_attr
= &p
->f_attr
;
704 p
->o_res
.dir_attr
= &p
->dir_attr
;
705 p
->o_res
.seqid
= p
->o_arg
.seqid
;
706 p
->c_res
.seqid
= p
->c_arg
.seqid
;
707 p
->o_res
.server
= p
->o_arg
.server
;
708 nfs_fattr_init(&p
->f_attr
);
709 nfs_fattr_init(&p
->dir_attr
);
710 p
->o_res
.seq_res
.sr_slotid
= NFS4_MAX_SLOT_TABLE
;
713 static struct nfs4_opendata
*nfs4_opendata_alloc(struct path
*path
,
714 struct nfs4_state_owner
*sp
, fmode_t fmode
, int flags
,
715 const struct iattr
*attrs
)
717 struct dentry
*parent
= dget_parent(path
->dentry
);
718 struct inode
*dir
= parent
->d_inode
;
719 struct nfs_server
*server
= NFS_SERVER(dir
);
720 struct nfs4_opendata
*p
;
722 p
= kzalloc(sizeof(*p
), GFP_KERNEL
);
725 p
->o_arg
.seqid
= nfs_alloc_seqid(&sp
->so_seqid
);
726 if (p
->o_arg
.seqid
== NULL
)
728 p
->path
.mnt
= mntget(path
->mnt
);
729 p
->path
.dentry
= dget(path
->dentry
);
732 atomic_inc(&sp
->so_count
);
733 p
->o_arg
.fh
= NFS_FH(dir
);
734 p
->o_arg
.open_flags
= flags
;
735 p
->o_arg
.fmode
= fmode
& (FMODE_READ
|FMODE_WRITE
);
736 p
->o_arg
.clientid
= server
->nfs_client
->cl_clientid
;
737 p
->o_arg
.id
= sp
->so_owner_id
.id
;
738 p
->o_arg
.name
= &p
->path
.dentry
->d_name
;
739 p
->o_arg
.server
= server
;
740 p
->o_arg
.bitmask
= server
->attr_bitmask
;
741 p
->o_arg
.claim
= NFS4_OPEN_CLAIM_NULL
;
742 if (flags
& O_EXCL
) {
743 u32
*s
= (u32
*) p
->o_arg
.u
.verifier
.data
;
746 } else if (flags
& O_CREAT
) {
747 p
->o_arg
.u
.attrs
= &p
->attrs
;
748 memcpy(&p
->attrs
, attrs
, sizeof(p
->attrs
));
750 p
->c_arg
.fh
= &p
->o_res
.fh
;
751 p
->c_arg
.stateid
= &p
->o_res
.stateid
;
752 p
->c_arg
.seqid
= p
->o_arg
.seqid
;
753 nfs4_init_opendata_res(p
);
763 static void nfs4_opendata_free(struct kref
*kref
)
765 struct nfs4_opendata
*p
= container_of(kref
,
766 struct nfs4_opendata
, kref
);
768 nfs_free_seqid(p
->o_arg
.seqid
);
769 if (p
->state
!= NULL
)
770 nfs4_put_open_state(p
->state
);
771 nfs4_put_state_owner(p
->owner
);
777 static void nfs4_opendata_put(struct nfs4_opendata
*p
)
780 kref_put(&p
->kref
, nfs4_opendata_free
);
783 static int nfs4_wait_for_completion_rpc_task(struct rpc_task
*task
)
787 ret
= rpc_wait_for_completion_task(task
);
791 static int can_open_cached(struct nfs4_state
*state
, fmode_t mode
, int open_mode
)
795 if (open_mode
& O_EXCL
)
797 switch (mode
& (FMODE_READ
|FMODE_WRITE
)) {
799 ret
|= test_bit(NFS_O_RDONLY_STATE
, &state
->flags
) != 0;
802 ret
|= test_bit(NFS_O_WRONLY_STATE
, &state
->flags
) != 0;
804 case FMODE_READ
|FMODE_WRITE
:
805 ret
|= test_bit(NFS_O_RDWR_STATE
, &state
->flags
) != 0;
811 static int can_open_delegated(struct nfs_delegation
*delegation
, fmode_t fmode
)
813 if ((delegation
->type
& fmode
) != fmode
)
815 if (test_bit(NFS_DELEGATION_NEED_RECLAIM
, &delegation
->flags
))
817 nfs_mark_delegation_referenced(delegation
);
821 static void update_open_stateflags(struct nfs4_state
*state
, fmode_t fmode
)
830 case FMODE_READ
|FMODE_WRITE
:
833 nfs4_state_set_mode_locked(state
, state
->state
| fmode
);
836 static void nfs_set_open_stateid_locked(struct nfs4_state
*state
, nfs4_stateid
*stateid
, fmode_t fmode
)
838 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) == 0)
839 memcpy(state
->stateid
.data
, stateid
->data
, sizeof(state
->stateid
.data
));
840 memcpy(state
->open_stateid
.data
, stateid
->data
, sizeof(state
->open_stateid
.data
));
843 set_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
846 set_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
848 case FMODE_READ
|FMODE_WRITE
:
849 set_bit(NFS_O_RDWR_STATE
, &state
->flags
);
853 static void nfs_set_open_stateid(struct nfs4_state
*state
, nfs4_stateid
*stateid
, fmode_t fmode
)
855 write_seqlock(&state
->seqlock
);
856 nfs_set_open_stateid_locked(state
, stateid
, fmode
);
857 write_sequnlock(&state
->seqlock
);
860 static void __update_open_stateid(struct nfs4_state
*state
, nfs4_stateid
*open_stateid
, const nfs4_stateid
*deleg_stateid
, fmode_t fmode
)
863 * Protect the call to nfs4_state_set_mode_locked and
864 * serialise the stateid update
866 write_seqlock(&state
->seqlock
);
867 if (deleg_stateid
!= NULL
) {
868 memcpy(state
->stateid
.data
, deleg_stateid
->data
, sizeof(state
->stateid
.data
));
869 set_bit(NFS_DELEGATED_STATE
, &state
->flags
);
871 if (open_stateid
!= NULL
)
872 nfs_set_open_stateid_locked(state
, open_stateid
, fmode
);
873 write_sequnlock(&state
->seqlock
);
874 spin_lock(&state
->owner
->so_lock
);
875 update_open_stateflags(state
, fmode
);
876 spin_unlock(&state
->owner
->so_lock
);
879 static int update_open_stateid(struct nfs4_state
*state
, nfs4_stateid
*open_stateid
, nfs4_stateid
*delegation
, fmode_t fmode
)
881 struct nfs_inode
*nfsi
= NFS_I(state
->inode
);
882 struct nfs_delegation
*deleg_cur
;
885 fmode
&= (FMODE_READ
|FMODE_WRITE
);
888 deleg_cur
= rcu_dereference(nfsi
->delegation
);
889 if (deleg_cur
== NULL
)
892 spin_lock(&deleg_cur
->lock
);
893 if (nfsi
->delegation
!= deleg_cur
||
894 (deleg_cur
->type
& fmode
) != fmode
)
895 goto no_delegation_unlock
;
897 if (delegation
== NULL
)
898 delegation
= &deleg_cur
->stateid
;
899 else if (memcmp(deleg_cur
->stateid
.data
, delegation
->data
, NFS4_STATEID_SIZE
) != 0)
900 goto no_delegation_unlock
;
902 nfs_mark_delegation_referenced(deleg_cur
);
903 __update_open_stateid(state
, open_stateid
, &deleg_cur
->stateid
, fmode
);
905 no_delegation_unlock
:
906 spin_unlock(&deleg_cur
->lock
);
910 if (!ret
&& open_stateid
!= NULL
) {
911 __update_open_stateid(state
, open_stateid
, NULL
, fmode
);
919 static void nfs4_return_incompatible_delegation(struct inode
*inode
, fmode_t fmode
)
921 struct nfs_delegation
*delegation
;
924 delegation
= rcu_dereference(NFS_I(inode
)->delegation
);
925 if (delegation
== NULL
|| (delegation
->type
& fmode
) == fmode
) {
930 nfs_inode_return_delegation(inode
);
933 static struct nfs4_state
*nfs4_try_open_cached(struct nfs4_opendata
*opendata
)
935 struct nfs4_state
*state
= opendata
->state
;
936 struct nfs_inode
*nfsi
= NFS_I(state
->inode
);
937 struct nfs_delegation
*delegation
;
938 int open_mode
= opendata
->o_arg
.open_flags
& O_EXCL
;
939 fmode_t fmode
= opendata
->o_arg
.fmode
;
940 nfs4_stateid stateid
;
944 if (can_open_cached(state
, fmode
, open_mode
)) {
945 spin_lock(&state
->owner
->so_lock
);
946 if (can_open_cached(state
, fmode
, open_mode
)) {
947 update_open_stateflags(state
, fmode
);
948 spin_unlock(&state
->owner
->so_lock
);
949 goto out_return_state
;
951 spin_unlock(&state
->owner
->so_lock
);
954 delegation
= rcu_dereference(nfsi
->delegation
);
955 if (delegation
== NULL
||
956 !can_open_delegated(delegation
, fmode
)) {
960 /* Save the delegation */
961 memcpy(stateid
.data
, delegation
->stateid
.data
, sizeof(stateid
.data
));
963 ret
= nfs_may_open(state
->inode
, state
->owner
->so_cred
, open_mode
);
968 /* Try to update the stateid using the delegation */
969 if (update_open_stateid(state
, NULL
, &stateid
, fmode
))
970 goto out_return_state
;
975 atomic_inc(&state
->count
);
979 static struct nfs4_state
*nfs4_opendata_to_nfs4_state(struct nfs4_opendata
*data
)
982 struct nfs4_state
*state
= NULL
;
983 struct nfs_delegation
*delegation
;
986 if (!data
->rpc_done
) {
987 state
= nfs4_try_open_cached(data
);
992 if (!(data
->f_attr
.valid
& NFS_ATTR_FATTR
))
994 inode
= nfs_fhget(data
->dir
->d_sb
, &data
->o_res
.fh
, &data
->f_attr
);
995 ret
= PTR_ERR(inode
);
999 state
= nfs4_get_open_state(inode
, data
->owner
);
1002 if (data
->o_res
.delegation_type
!= 0) {
1003 int delegation_flags
= 0;
1006 delegation
= rcu_dereference(NFS_I(inode
)->delegation
);
1008 delegation_flags
= delegation
->flags
;
1010 if ((delegation_flags
& 1UL<<NFS_DELEGATION_NEED_RECLAIM
) == 0)
1011 nfs_inode_set_delegation(state
->inode
,
1012 data
->owner
->so_cred
,
1015 nfs_inode_reclaim_delegation(state
->inode
,
1016 data
->owner
->so_cred
,
1020 update_open_stateid(state
, &data
->o_res
.stateid
, NULL
,
1028 return ERR_PTR(ret
);
1031 static struct nfs_open_context
*nfs4_state_find_open_context(struct nfs4_state
*state
)
1033 struct nfs_inode
*nfsi
= NFS_I(state
->inode
);
1034 struct nfs_open_context
*ctx
;
1036 spin_lock(&state
->inode
->i_lock
);
1037 list_for_each_entry(ctx
, &nfsi
->open_files
, list
) {
1038 if (ctx
->state
!= state
)
1040 get_nfs_open_context(ctx
);
1041 spin_unlock(&state
->inode
->i_lock
);
1044 spin_unlock(&state
->inode
->i_lock
);
1045 return ERR_PTR(-ENOENT
);
1048 static struct nfs4_opendata
*nfs4_open_recoverdata_alloc(struct nfs_open_context
*ctx
, struct nfs4_state
*state
)
1050 struct nfs4_opendata
*opendata
;
1052 opendata
= nfs4_opendata_alloc(&ctx
->path
, state
->owner
, 0, 0, NULL
);
1053 if (opendata
== NULL
)
1054 return ERR_PTR(-ENOMEM
);
1055 opendata
->state
= state
;
1056 atomic_inc(&state
->count
);
1060 static int nfs4_open_recover_helper(struct nfs4_opendata
*opendata
, fmode_t fmode
, struct nfs4_state
**res
)
1062 struct nfs4_state
*newstate
;
1065 opendata
->o_arg
.open_flags
= 0;
1066 opendata
->o_arg
.fmode
= fmode
;
1067 memset(&opendata
->o_res
, 0, sizeof(opendata
->o_res
));
1068 memset(&opendata
->c_res
, 0, sizeof(opendata
->c_res
));
1069 nfs4_init_opendata_res(opendata
);
1070 ret
= _nfs4_proc_open(opendata
);
1073 newstate
= nfs4_opendata_to_nfs4_state(opendata
);
1074 if (IS_ERR(newstate
))
1075 return PTR_ERR(newstate
);
1076 nfs4_close_state(&opendata
->path
, newstate
, fmode
);
1081 static int nfs4_open_recover(struct nfs4_opendata
*opendata
, struct nfs4_state
*state
)
1083 struct nfs4_state
*newstate
;
1086 /* memory barrier prior to reading state->n_* */
1087 clear_bit(NFS_DELEGATED_STATE
, &state
->flags
);
1089 if (state
->n_rdwr
!= 0) {
1090 ret
= nfs4_open_recover_helper(opendata
, FMODE_READ
|FMODE_WRITE
, &newstate
);
1093 if (newstate
!= state
)
1096 if (state
->n_wronly
!= 0) {
1097 ret
= nfs4_open_recover_helper(opendata
, FMODE_WRITE
, &newstate
);
1100 if (newstate
!= state
)
1103 if (state
->n_rdonly
!= 0) {
1104 ret
= nfs4_open_recover_helper(opendata
, FMODE_READ
, &newstate
);
1107 if (newstate
!= state
)
1111 * We may have performed cached opens for all three recoveries.
1112 * Check if we need to update the current stateid.
1114 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) == 0 &&
1115 memcmp(state
->stateid
.data
, state
->open_stateid
.data
, sizeof(state
->stateid
.data
)) != 0) {
1116 write_seqlock(&state
->seqlock
);
1117 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) == 0)
1118 memcpy(state
->stateid
.data
, state
->open_stateid
.data
, sizeof(state
->stateid
.data
));
1119 write_sequnlock(&state
->seqlock
);
1126 * reclaim state on the server after a reboot.
1128 static int _nfs4_do_open_reclaim(struct nfs_open_context
*ctx
, struct nfs4_state
*state
)
1130 struct nfs_delegation
*delegation
;
1131 struct nfs4_opendata
*opendata
;
1132 fmode_t delegation_type
= 0;
1135 opendata
= nfs4_open_recoverdata_alloc(ctx
, state
);
1136 if (IS_ERR(opendata
))
1137 return PTR_ERR(opendata
);
1138 opendata
->o_arg
.claim
= NFS4_OPEN_CLAIM_PREVIOUS
;
1139 opendata
->o_arg
.fh
= NFS_FH(state
->inode
);
1141 delegation
= rcu_dereference(NFS_I(state
->inode
)->delegation
);
1142 if (delegation
!= NULL
&& test_bit(NFS_DELEGATION_NEED_RECLAIM
, &delegation
->flags
) != 0)
1143 delegation_type
= delegation
->type
;
1145 opendata
->o_arg
.u
.delegation_type
= delegation_type
;
1146 status
= nfs4_open_recover(opendata
, state
);
1147 nfs4_opendata_put(opendata
);
1151 static int nfs4_do_open_reclaim(struct nfs_open_context
*ctx
, struct nfs4_state
*state
)
1153 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
1154 struct nfs4_exception exception
= { };
1157 err
= _nfs4_do_open_reclaim(ctx
, state
);
1158 if (err
!= -NFS4ERR_DELAY
)
1160 nfs4_handle_exception(server
, err
, &exception
);
1161 } while (exception
.retry
);
1165 static int nfs4_open_reclaim(struct nfs4_state_owner
*sp
, struct nfs4_state
*state
)
1167 struct nfs_open_context
*ctx
;
1170 ctx
= nfs4_state_find_open_context(state
);
1172 return PTR_ERR(ctx
);
1173 ret
= nfs4_do_open_reclaim(ctx
, state
);
1174 put_nfs_open_context(ctx
);
1178 static int _nfs4_open_delegation_recall(struct nfs_open_context
*ctx
, struct nfs4_state
*state
, const nfs4_stateid
*stateid
)
1180 struct nfs4_opendata
*opendata
;
1183 opendata
= nfs4_open_recoverdata_alloc(ctx
, state
);
1184 if (IS_ERR(opendata
))
1185 return PTR_ERR(opendata
);
1186 opendata
->o_arg
.claim
= NFS4_OPEN_CLAIM_DELEGATE_CUR
;
1187 memcpy(opendata
->o_arg
.u
.delegation
.data
, stateid
->data
,
1188 sizeof(opendata
->o_arg
.u
.delegation
.data
));
1189 ret
= nfs4_open_recover(opendata
, state
);
1190 nfs4_opendata_put(opendata
);
1194 int nfs4_open_delegation_recall(struct nfs_open_context
*ctx
, struct nfs4_state
*state
, const nfs4_stateid
*stateid
)
1196 struct nfs4_exception exception
= { };
1197 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
1200 err
= _nfs4_open_delegation_recall(ctx
, state
, stateid
);
1206 case -NFS4ERR_STALE_CLIENTID
:
1207 case -NFS4ERR_STALE_STATEID
:
1208 case -NFS4ERR_EXPIRED
:
1209 /* Don't recall a delegation if it was lost */
1210 nfs4_schedule_state_recovery(server
->nfs_client
);
1214 * The show must go on: exit, but mark the
1215 * stateid as needing recovery.
1217 case -NFS4ERR_ADMIN_REVOKED
:
1218 case -NFS4ERR_BAD_STATEID
:
1219 nfs4_state_mark_reclaim_nograce(server
->nfs_client
, state
);
1224 err
= nfs4_handle_exception(server
, err
, &exception
);
1225 } while (exception
.retry
);
1230 static void nfs4_open_confirm_done(struct rpc_task
*task
, void *calldata
)
1232 struct nfs4_opendata
*data
= calldata
;
1234 data
->rpc_status
= task
->tk_status
;
1235 if (RPC_ASSASSINATED(task
))
1237 if (data
->rpc_status
== 0) {
1238 memcpy(data
->o_res
.stateid
.data
, data
->c_res
.stateid
.data
,
1239 sizeof(data
->o_res
.stateid
.data
));
1240 nfs_confirm_seqid(&data
->owner
->so_seqid
, 0);
1241 renew_lease(data
->o_res
.server
, data
->timestamp
);
1246 static void nfs4_open_confirm_release(void *calldata
)
1248 struct nfs4_opendata
*data
= calldata
;
1249 struct nfs4_state
*state
= NULL
;
1251 /* If this request hasn't been cancelled, do nothing */
1252 if (data
->cancelled
== 0)
1254 /* In case of error, no cleanup! */
1255 if (!data
->rpc_done
)
1257 state
= nfs4_opendata_to_nfs4_state(data
);
1259 nfs4_close_state(&data
->path
, state
, data
->o_arg
.fmode
);
1261 nfs4_opendata_put(data
);
1264 static const struct rpc_call_ops nfs4_open_confirm_ops
= {
1265 .rpc_call_done
= nfs4_open_confirm_done
,
1266 .rpc_release
= nfs4_open_confirm_release
,
1270 * Note: On error, nfs4_proc_open_confirm will free the struct nfs4_opendata
1272 static int _nfs4_proc_open_confirm(struct nfs4_opendata
*data
)
1274 struct nfs_server
*server
= NFS_SERVER(data
->dir
->d_inode
);
1275 struct rpc_task
*task
;
1276 struct rpc_message msg
= {
1277 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_OPEN_CONFIRM
],
1278 .rpc_argp
= &data
->c_arg
,
1279 .rpc_resp
= &data
->c_res
,
1280 .rpc_cred
= data
->owner
->so_cred
,
1282 struct rpc_task_setup task_setup_data
= {
1283 .rpc_client
= server
->client
,
1284 .rpc_message
= &msg
,
1285 .callback_ops
= &nfs4_open_confirm_ops
,
1286 .callback_data
= data
,
1287 .workqueue
= nfsiod_workqueue
,
1288 .flags
= RPC_TASK_ASYNC
,
1292 kref_get(&data
->kref
);
1294 data
->rpc_status
= 0;
1295 data
->timestamp
= jiffies
;
1296 task
= rpc_run_task(&task_setup_data
);
1298 return PTR_ERR(task
);
1299 status
= nfs4_wait_for_completion_rpc_task(task
);
1301 data
->cancelled
= 1;
1304 status
= data
->rpc_status
;
1309 static void nfs4_open_prepare(struct rpc_task
*task
, void *calldata
)
1311 struct nfs4_opendata
*data
= calldata
;
1312 struct nfs4_state_owner
*sp
= data
->owner
;
1314 if (nfs_wait_on_sequence(data
->o_arg
.seqid
, task
) != 0)
1317 * Check if we still need to send an OPEN call, or if we can use
1318 * a delegation instead.
1320 if (data
->state
!= NULL
) {
1321 struct nfs_delegation
*delegation
;
1323 if (can_open_cached(data
->state
, data
->o_arg
.fmode
, data
->o_arg
.open_flags
))
1326 delegation
= rcu_dereference(NFS_I(data
->state
->inode
)->delegation
);
1327 if (delegation
!= NULL
&&
1328 test_bit(NFS_DELEGATION_NEED_RECLAIM
, &delegation
->flags
) == 0) {
1334 /* Update sequence id. */
1335 data
->o_arg
.id
= sp
->so_owner_id
.id
;
1336 data
->o_arg
.clientid
= sp
->so_client
->cl_clientid
;
1337 if (data
->o_arg
.claim
== NFS4_OPEN_CLAIM_PREVIOUS
) {
1338 task
->tk_msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_OPEN_NOATTR
];
1339 nfs_copy_fh(&data
->o_res
.fh
, data
->o_arg
.fh
);
1341 data
->timestamp
= jiffies
;
1342 if (nfs4_setup_sequence(data
->o_arg
.server
->nfs_client
,
1343 &data
->o_arg
.seq_args
,
1344 &data
->o_res
.seq_res
, 1, task
))
1346 rpc_call_start(task
);
1349 task
->tk_action
= NULL
;
1353 static void nfs4_open_done(struct rpc_task
*task
, void *calldata
)
1355 struct nfs4_opendata
*data
= calldata
;
1357 data
->rpc_status
= task
->tk_status
;
1359 nfs4_sequence_done_free_slot(data
->o_arg
.server
, &data
->o_res
.seq_res
,
1362 if (RPC_ASSASSINATED(task
))
1364 if (task
->tk_status
== 0) {
1365 switch (data
->o_res
.f_attr
->mode
& S_IFMT
) {
1369 data
->rpc_status
= -ELOOP
;
1372 data
->rpc_status
= -EISDIR
;
1375 data
->rpc_status
= -ENOTDIR
;
1377 renew_lease(data
->o_res
.server
, data
->timestamp
);
1378 if (!(data
->o_res
.rflags
& NFS4_OPEN_RESULT_CONFIRM
))
1379 nfs_confirm_seqid(&data
->owner
->so_seqid
, 0);
1384 static void nfs4_open_release(void *calldata
)
1386 struct nfs4_opendata
*data
= calldata
;
1387 struct nfs4_state
*state
= NULL
;
1389 /* If this request hasn't been cancelled, do nothing */
1390 if (data
->cancelled
== 0)
1392 /* In case of error, no cleanup! */
1393 if (data
->rpc_status
!= 0 || !data
->rpc_done
)
1395 /* In case we need an open_confirm, no cleanup! */
1396 if (data
->o_res
.rflags
& NFS4_OPEN_RESULT_CONFIRM
)
1398 state
= nfs4_opendata_to_nfs4_state(data
);
1400 nfs4_close_state(&data
->path
, state
, data
->o_arg
.fmode
);
1402 nfs4_opendata_put(data
);
1405 static const struct rpc_call_ops nfs4_open_ops
= {
1406 .rpc_call_prepare
= nfs4_open_prepare
,
1407 .rpc_call_done
= nfs4_open_done
,
1408 .rpc_release
= nfs4_open_release
,
1412 * Note: On error, nfs4_proc_open will free the struct nfs4_opendata
1414 static int _nfs4_proc_open(struct nfs4_opendata
*data
)
1416 struct inode
*dir
= data
->dir
->d_inode
;
1417 struct nfs_server
*server
= NFS_SERVER(dir
);
1418 struct nfs_openargs
*o_arg
= &data
->o_arg
;
1419 struct nfs_openres
*o_res
= &data
->o_res
;
1420 struct rpc_task
*task
;
1421 struct rpc_message msg
= {
1422 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_OPEN
],
1425 .rpc_cred
= data
->owner
->so_cred
,
1427 struct rpc_task_setup task_setup_data
= {
1428 .rpc_client
= server
->client
,
1429 .rpc_message
= &msg
,
1430 .callback_ops
= &nfs4_open_ops
,
1431 .callback_data
= data
,
1432 .workqueue
= nfsiod_workqueue
,
1433 .flags
= RPC_TASK_ASYNC
,
1437 kref_get(&data
->kref
);
1439 data
->rpc_status
= 0;
1440 data
->cancelled
= 0;
1441 task
= rpc_run_task(&task_setup_data
);
1443 return PTR_ERR(task
);
1444 status
= nfs4_wait_for_completion_rpc_task(task
);
1446 data
->cancelled
= 1;
1449 status
= data
->rpc_status
;
1451 if (status
!= 0 || !data
->rpc_done
)
1454 if (o_res
->fh
.size
== 0)
1455 _nfs4_proc_lookup(dir
, o_arg
->name
, &o_res
->fh
, o_res
->f_attr
);
1457 if (o_arg
->open_flags
& O_CREAT
) {
1458 update_changeattr(dir
, &o_res
->cinfo
);
1459 nfs_post_op_update_inode(dir
, o_res
->dir_attr
);
1461 nfs_refresh_inode(dir
, o_res
->dir_attr
);
1462 if(o_res
->rflags
& NFS4_OPEN_RESULT_CONFIRM
) {
1463 status
= _nfs4_proc_open_confirm(data
);
1467 if (!(o_res
->f_attr
->valid
& NFS_ATTR_FATTR
))
1468 _nfs4_proc_getattr(server
, &o_res
->fh
, o_res
->f_attr
);
1472 static int nfs4_recover_expired_lease(struct nfs_server
*server
)
1474 struct nfs_client
*clp
= server
->nfs_client
;
1478 for (loop
= NFS4_MAX_LOOP_ON_RECOVER
; loop
!= 0; loop
--) {
1479 ret
= nfs4_wait_clnt_recover(clp
);
1482 if (!test_bit(NFS4CLNT_LEASE_EXPIRED
, &clp
->cl_state
) &&
1483 !test_bit(NFS4CLNT_CHECK_LEASE
,&clp
->cl_state
))
1485 nfs4_schedule_state_recovery(clp
);
1493 * reclaim state on the server after a network partition.
1494 * Assumes caller holds the appropriate lock
1496 static int _nfs4_open_expired(struct nfs_open_context
*ctx
, struct nfs4_state
*state
)
1498 struct nfs4_opendata
*opendata
;
1501 opendata
= nfs4_open_recoverdata_alloc(ctx
, state
);
1502 if (IS_ERR(opendata
))
1503 return PTR_ERR(opendata
);
1504 ret
= nfs4_open_recover(opendata
, state
);
1506 d_drop(ctx
->path
.dentry
);
1507 nfs4_opendata_put(opendata
);
1511 static int nfs4_do_open_expired(struct nfs_open_context
*ctx
, struct nfs4_state
*state
)
1513 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
1514 struct nfs4_exception exception
= { };
1518 err
= _nfs4_open_expired(ctx
, state
);
1522 case -NFS4ERR_GRACE
:
1523 case -NFS4ERR_DELAY
:
1524 nfs4_handle_exception(server
, err
, &exception
);
1527 } while (exception
.retry
);
1532 static int nfs4_open_expired(struct nfs4_state_owner
*sp
, struct nfs4_state
*state
)
1534 struct nfs_open_context
*ctx
;
1537 ctx
= nfs4_state_find_open_context(state
);
1539 return PTR_ERR(ctx
);
1540 ret
= nfs4_do_open_expired(ctx
, state
);
1541 put_nfs_open_context(ctx
);
1546 * on an EXCLUSIVE create, the server should send back a bitmask with FATTR4-*
1547 * fields corresponding to attributes that were used to store the verifier.
1548 * Make sure we clobber those fields in the later setattr call
1550 static inline void nfs4_exclusive_attrset(struct nfs4_opendata
*opendata
, struct iattr
*sattr
)
1552 if ((opendata
->o_res
.attrset
[1] & FATTR4_WORD1_TIME_ACCESS
) &&
1553 !(sattr
->ia_valid
& ATTR_ATIME_SET
))
1554 sattr
->ia_valid
|= ATTR_ATIME
;
1556 if ((opendata
->o_res
.attrset
[1] & FATTR4_WORD1_TIME_MODIFY
) &&
1557 !(sattr
->ia_valid
& ATTR_MTIME_SET
))
1558 sattr
->ia_valid
|= ATTR_MTIME
;
1562 * Returns a referenced nfs4_state
1564 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
)
1566 struct nfs4_state_owner
*sp
;
1567 struct nfs4_state
*state
= NULL
;
1568 struct nfs_server
*server
= NFS_SERVER(dir
);
1569 struct nfs4_opendata
*opendata
;
1572 /* Protect against reboot recovery conflicts */
1574 if (!(sp
= nfs4_get_state_owner(server
, cred
))) {
1575 dprintk("nfs4_do_open: nfs4_get_state_owner failed!\n");
1578 status
= nfs4_recover_expired_lease(server
);
1580 goto err_put_state_owner
;
1581 if (path
->dentry
->d_inode
!= NULL
)
1582 nfs4_return_incompatible_delegation(path
->dentry
->d_inode
, fmode
);
1584 opendata
= nfs4_opendata_alloc(path
, sp
, fmode
, flags
, sattr
);
1585 if (opendata
== NULL
)
1586 goto err_put_state_owner
;
1588 if (path
->dentry
->d_inode
!= NULL
)
1589 opendata
->state
= nfs4_get_open_state(path
->dentry
->d_inode
, sp
);
1591 status
= _nfs4_proc_open(opendata
);
1593 goto err_opendata_put
;
1595 if (opendata
->o_arg
.open_flags
& O_EXCL
)
1596 nfs4_exclusive_attrset(opendata
, sattr
);
1598 state
= nfs4_opendata_to_nfs4_state(opendata
);
1599 status
= PTR_ERR(state
);
1601 goto err_opendata_put
;
1602 nfs4_opendata_put(opendata
);
1603 nfs4_put_state_owner(sp
);
1607 nfs4_opendata_put(opendata
);
1608 err_put_state_owner
:
1609 nfs4_put_state_owner(sp
);
1616 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
)
1618 struct nfs4_exception exception
= { };
1619 struct nfs4_state
*res
;
1623 status
= _nfs4_do_open(dir
, path
, fmode
, flags
, sattr
, cred
, &res
);
1626 /* NOTE: BAD_SEQID means the server and client disagree about the
1627 * book-keeping w.r.t. state-changing operations
1628 * (OPEN/CLOSE/LOCK/LOCKU...)
1629 * It is actually a sign of a bug on the client or on the server.
1631 * If we receive a BAD_SEQID error in the particular case of
1632 * doing an OPEN, we assume that nfs_increment_open_seqid() will
1633 * have unhashed the old state_owner for us, and that we can
1634 * therefore safely retry using a new one. We should still warn
1635 * the user though...
1637 if (status
== -NFS4ERR_BAD_SEQID
) {
1638 printk(KERN_WARNING
"NFS: v4 server %s "
1639 " returned a bad sequence-id error!\n",
1640 NFS_SERVER(dir
)->nfs_client
->cl_hostname
);
1641 exception
.retry
= 1;
1645 * BAD_STATEID on OPEN means that the server cancelled our
1646 * state before it received the OPEN_CONFIRM.
1647 * Recover by retrying the request as per the discussion
1648 * on Page 181 of RFC3530.
1650 if (status
== -NFS4ERR_BAD_STATEID
) {
1651 exception
.retry
= 1;
1654 if (status
== -EAGAIN
) {
1655 /* We must have found a delegation */
1656 exception
.retry
= 1;
1659 res
= ERR_PTR(nfs4_handle_exception(NFS_SERVER(dir
),
1660 status
, &exception
));
1661 } while (exception
.retry
);
1665 static int _nfs4_do_setattr(struct inode
*inode
, struct rpc_cred
*cred
,
1666 struct nfs_fattr
*fattr
, struct iattr
*sattr
,
1667 struct nfs4_state
*state
)
1669 struct nfs_server
*server
= NFS_SERVER(inode
);
1670 struct nfs_setattrargs arg
= {
1671 .fh
= NFS_FH(inode
),
1674 .bitmask
= server
->attr_bitmask
,
1676 struct nfs_setattrres res
= {
1680 struct rpc_message msg
= {
1681 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETATTR
],
1686 unsigned long timestamp
= jiffies
;
1689 nfs_fattr_init(fattr
);
1691 if (nfs4_copy_delegation_stateid(&arg
.stateid
, inode
)) {
1692 /* Use that stateid */
1693 } else if (state
!= NULL
) {
1694 nfs4_copy_stateid(&arg
.stateid
, state
, current
->files
);
1696 memcpy(&arg
.stateid
, &zero_stateid
, sizeof(arg
.stateid
));
1698 status
= nfs4_call_sync(server
, &msg
, &arg
, &res
, 1);
1699 if (status
== 0 && state
!= NULL
)
1700 renew_lease(server
, timestamp
);
1704 static int nfs4_do_setattr(struct inode
*inode
, struct rpc_cred
*cred
,
1705 struct nfs_fattr
*fattr
, struct iattr
*sattr
,
1706 struct nfs4_state
*state
)
1708 struct nfs_server
*server
= NFS_SERVER(inode
);
1709 struct nfs4_exception exception
= { };
1712 err
= nfs4_handle_exception(server
,
1713 _nfs4_do_setattr(inode
, cred
, fattr
, sattr
, state
),
1715 } while (exception
.retry
);
1719 struct nfs4_closedata
{
1721 struct inode
*inode
;
1722 struct nfs4_state
*state
;
1723 struct nfs_closeargs arg
;
1724 struct nfs_closeres res
;
1725 struct nfs_fattr fattr
;
1726 unsigned long timestamp
;
1729 static void nfs4_free_closedata(void *data
)
1731 struct nfs4_closedata
*calldata
= data
;
1732 struct nfs4_state_owner
*sp
= calldata
->state
->owner
;
1734 nfs4_put_open_state(calldata
->state
);
1735 nfs_free_seqid(calldata
->arg
.seqid
);
1736 nfs4_put_state_owner(sp
);
1737 path_put(&calldata
->path
);
1741 static void nfs4_close_done(struct rpc_task
*task
, void *data
)
1743 struct nfs4_closedata
*calldata
= data
;
1744 struct nfs4_state
*state
= calldata
->state
;
1745 struct nfs_server
*server
= NFS_SERVER(calldata
->inode
);
1747 nfs4_sequence_done(server
, &calldata
->res
.seq_res
, task
->tk_status
);
1748 if (RPC_ASSASSINATED(task
))
1750 /* hmm. we are done with the inode, and in the process of freeing
1751 * the state_owner. we keep this around to process errors
1753 switch (task
->tk_status
) {
1755 nfs_set_open_stateid(state
, &calldata
->res
.stateid
, 0);
1756 renew_lease(server
, calldata
->timestamp
);
1758 case -NFS4ERR_STALE_STATEID
:
1759 case -NFS4ERR_OLD_STATEID
:
1760 case -NFS4ERR_BAD_STATEID
:
1761 case -NFS4ERR_EXPIRED
:
1762 if (calldata
->arg
.fmode
== 0)
1765 if (nfs4_async_handle_error(task
, server
, state
) == -EAGAIN
) {
1766 nfs4_restart_rpc(task
, server
->nfs_client
,
1767 &calldata
->res
.seq_res
);
1771 nfs4_sequence_free_slot(server
->nfs_client
, &calldata
->res
.seq_res
);
1772 nfs_refresh_inode(calldata
->inode
, calldata
->res
.fattr
);
1775 static void nfs4_close_prepare(struct rpc_task
*task
, void *data
)
1777 struct nfs4_closedata
*calldata
= data
;
1778 struct nfs4_state
*state
= calldata
->state
;
1779 int clear_rd
, clear_wr
, clear_rdwr
;
1781 if (nfs_wait_on_sequence(calldata
->arg
.seqid
, task
) != 0)
1784 clear_rd
= clear_wr
= clear_rdwr
= 0;
1785 spin_lock(&state
->owner
->so_lock
);
1786 /* Calculate the change in open mode */
1787 if (state
->n_rdwr
== 0) {
1788 if (state
->n_rdonly
== 0) {
1789 clear_rd
|= test_and_clear_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
1790 clear_rdwr
|= test_and_clear_bit(NFS_O_RDWR_STATE
, &state
->flags
);
1792 if (state
->n_wronly
== 0) {
1793 clear_wr
|= test_and_clear_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
1794 clear_rdwr
|= test_and_clear_bit(NFS_O_RDWR_STATE
, &state
->flags
);
1797 spin_unlock(&state
->owner
->so_lock
);
1798 if (!clear_rd
&& !clear_wr
&& !clear_rdwr
) {
1799 /* Note: exit _without_ calling nfs4_close_done */
1800 task
->tk_action
= NULL
;
1803 nfs_fattr_init(calldata
->res
.fattr
);
1804 if (test_bit(NFS_O_RDONLY_STATE
, &state
->flags
) != 0) {
1805 task
->tk_msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_OPEN_DOWNGRADE
];
1806 calldata
->arg
.fmode
= FMODE_READ
;
1807 } else if (test_bit(NFS_O_WRONLY_STATE
, &state
->flags
) != 0) {
1808 task
->tk_msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_OPEN_DOWNGRADE
];
1809 calldata
->arg
.fmode
= FMODE_WRITE
;
1811 calldata
->timestamp
= jiffies
;
1812 if (nfs4_setup_sequence((NFS_SERVER(calldata
->inode
))->nfs_client
,
1813 &calldata
->arg
.seq_args
, &calldata
->res
.seq_res
,
1816 rpc_call_start(task
);
1819 static const struct rpc_call_ops nfs4_close_ops
= {
1820 .rpc_call_prepare
= nfs4_close_prepare
,
1821 .rpc_call_done
= nfs4_close_done
,
1822 .rpc_release
= nfs4_free_closedata
,
1826 * It is possible for data to be read/written from a mem-mapped file
1827 * after the sys_close call (which hits the vfs layer as a flush).
1828 * This means that we can't safely call nfsv4 close on a file until
1829 * the inode is cleared. This in turn means that we are not good
1830 * NFSv4 citizens - we do not indicate to the server to update the file's
1831 * share state even when we are done with one of the three share
1832 * stateid's in the inode.
1834 * NOTE: Caller must be holding the sp->so_owner semaphore!
1836 int nfs4_do_close(struct path
*path
, struct nfs4_state
*state
, int wait
)
1838 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
1839 struct nfs4_closedata
*calldata
;
1840 struct nfs4_state_owner
*sp
= state
->owner
;
1841 struct rpc_task
*task
;
1842 struct rpc_message msg
= {
1843 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_CLOSE
],
1844 .rpc_cred
= state
->owner
->so_cred
,
1846 struct rpc_task_setup task_setup_data
= {
1847 .rpc_client
= server
->client
,
1848 .rpc_message
= &msg
,
1849 .callback_ops
= &nfs4_close_ops
,
1850 .workqueue
= nfsiod_workqueue
,
1851 .flags
= RPC_TASK_ASYNC
,
1853 int status
= -ENOMEM
;
1855 calldata
= kzalloc(sizeof(*calldata
), GFP_KERNEL
);
1856 if (calldata
== NULL
)
1858 calldata
->inode
= state
->inode
;
1859 calldata
->state
= state
;
1860 calldata
->arg
.fh
= NFS_FH(state
->inode
);
1861 calldata
->arg
.stateid
= &state
->open_stateid
;
1862 if (nfs4_has_session(server
->nfs_client
))
1863 memset(calldata
->arg
.stateid
->data
, 0, 4); /* clear seqid */
1864 /* Serialization for the sequence id */
1865 calldata
->arg
.seqid
= nfs_alloc_seqid(&state
->owner
->so_seqid
);
1866 if (calldata
->arg
.seqid
== NULL
)
1867 goto out_free_calldata
;
1868 calldata
->arg
.fmode
= 0;
1869 calldata
->arg
.bitmask
= server
->cache_consistency_bitmask
;
1870 calldata
->res
.fattr
= &calldata
->fattr
;
1871 calldata
->res
.seqid
= calldata
->arg
.seqid
;
1872 calldata
->res
.server
= server
;
1873 calldata
->res
.seq_res
.sr_slotid
= NFS4_MAX_SLOT_TABLE
;
1874 calldata
->path
.mnt
= mntget(path
->mnt
);
1875 calldata
->path
.dentry
= dget(path
->dentry
);
1877 msg
.rpc_argp
= &calldata
->arg
,
1878 msg
.rpc_resp
= &calldata
->res
,
1879 task_setup_data
.callback_data
= calldata
;
1880 task
= rpc_run_task(&task_setup_data
);
1882 return PTR_ERR(task
);
1885 status
= rpc_wait_for_completion_task(task
);
1891 nfs4_put_open_state(state
);
1892 nfs4_put_state_owner(sp
);
1896 static int nfs4_intent_set_file(struct nameidata
*nd
, struct path
*path
, struct nfs4_state
*state
, fmode_t fmode
)
1901 /* If the open_intent is for execute, we have an extra check to make */
1902 if (fmode
& FMODE_EXEC
) {
1903 ret
= nfs_may_open(state
->inode
,
1904 state
->owner
->so_cred
,
1905 nd
->intent
.open
.flags
);
1909 filp
= lookup_instantiate_filp(nd
, path
->dentry
, NULL
);
1910 if (!IS_ERR(filp
)) {
1911 struct nfs_open_context
*ctx
;
1912 ctx
= nfs_file_open_context(filp
);
1916 ret
= PTR_ERR(filp
);
1918 nfs4_close_sync(path
, state
, fmode
& (FMODE_READ
|FMODE_WRITE
));
1923 nfs4_atomic_open(struct inode
*dir
, struct dentry
*dentry
, struct nameidata
*nd
)
1925 struct path path
= {
1926 .mnt
= nd
->path
.mnt
,
1929 struct dentry
*parent
;
1931 struct rpc_cred
*cred
;
1932 struct nfs4_state
*state
;
1934 fmode_t fmode
= nd
->intent
.open
.flags
& (FMODE_READ
| FMODE_WRITE
| FMODE_EXEC
);
1936 if (nd
->flags
& LOOKUP_CREATE
) {
1937 attr
.ia_mode
= nd
->intent
.open
.create_mode
;
1938 attr
.ia_valid
= ATTR_MODE
;
1939 if (!IS_POSIXACL(dir
))
1940 attr
.ia_mode
&= ~current_umask();
1943 BUG_ON(nd
->intent
.open
.flags
& O_CREAT
);
1946 cred
= rpc_lookup_cred();
1948 return (struct dentry
*)cred
;
1949 parent
= dentry
->d_parent
;
1950 /* Protect against concurrent sillydeletes */
1951 nfs_block_sillyrename(parent
);
1952 state
= nfs4_do_open(dir
, &path
, fmode
, nd
->intent
.open
.flags
, &attr
, cred
);
1954 if (IS_ERR(state
)) {
1955 if (PTR_ERR(state
) == -ENOENT
) {
1956 d_add(dentry
, NULL
);
1957 nfs_set_verifier(dentry
, nfs_save_change_attribute(dir
));
1959 nfs_unblock_sillyrename(parent
);
1960 return (struct dentry
*)state
;
1962 res
= d_add_unique(dentry
, igrab(state
->inode
));
1965 nfs_set_verifier(path
.dentry
, nfs_save_change_attribute(dir
));
1966 nfs_unblock_sillyrename(parent
);
1967 nfs4_intent_set_file(nd
, &path
, state
, fmode
);
1972 nfs4_open_revalidate(struct inode
*dir
, struct dentry
*dentry
, int openflags
, struct nameidata
*nd
)
1974 struct path path
= {
1975 .mnt
= nd
->path
.mnt
,
1978 struct rpc_cred
*cred
;
1979 struct nfs4_state
*state
;
1980 fmode_t fmode
= openflags
& (FMODE_READ
| FMODE_WRITE
);
1982 cred
= rpc_lookup_cred();
1984 return PTR_ERR(cred
);
1985 state
= nfs4_do_open(dir
, &path
, fmode
, openflags
, NULL
, cred
);
1987 if (IS_ERR(state
)) {
1988 switch (PTR_ERR(state
)) {
1994 lookup_instantiate_filp(nd
, (struct dentry
*)state
, NULL
);
2000 if (state
->inode
== dentry
->d_inode
) {
2001 nfs_set_verifier(dentry
, nfs_save_change_attribute(dir
));
2002 nfs4_intent_set_file(nd
, &path
, state
, fmode
);
2005 nfs4_close_sync(&path
, state
, fmode
);
2011 static void nfs4_close_context(struct nfs_open_context
*ctx
, int is_sync
)
2013 if (ctx
->state
== NULL
)
2016 nfs4_close_sync(&ctx
->path
, ctx
->state
, ctx
->mode
);
2018 nfs4_close_state(&ctx
->path
, ctx
->state
, ctx
->mode
);
2021 static int _nfs4_server_capabilities(struct nfs_server
*server
, struct nfs_fh
*fhandle
)
2023 struct nfs4_server_caps_arg args
= {
2026 struct nfs4_server_caps_res res
= {};
2027 struct rpc_message msg
= {
2028 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SERVER_CAPS
],
2034 status
= nfs4_call_sync(server
, &msg
, &args
, &res
, 0);
2036 memcpy(server
->attr_bitmask
, res
.attr_bitmask
, sizeof(server
->attr_bitmask
));
2037 server
->caps
&= ~(NFS_CAP_ACLS
|NFS_CAP_HARDLINKS
|
2038 NFS_CAP_SYMLINKS
|NFS_CAP_FILEID
|
2039 NFS_CAP_MODE
|NFS_CAP_NLINK
|NFS_CAP_OWNER
|
2040 NFS_CAP_OWNER_GROUP
|NFS_CAP_ATIME
|
2041 NFS_CAP_CTIME
|NFS_CAP_MTIME
);
2042 if (res
.attr_bitmask
[0] & FATTR4_WORD0_ACL
)
2043 server
->caps
|= NFS_CAP_ACLS
;
2044 if (res
.has_links
!= 0)
2045 server
->caps
|= NFS_CAP_HARDLINKS
;
2046 if (res
.has_symlinks
!= 0)
2047 server
->caps
|= NFS_CAP_SYMLINKS
;
2048 if (res
.attr_bitmask
[0] & FATTR4_WORD0_FILEID
)
2049 server
->caps
|= NFS_CAP_FILEID
;
2050 if (res
.attr_bitmask
[1] & FATTR4_WORD1_MODE
)
2051 server
->caps
|= NFS_CAP_MODE
;
2052 if (res
.attr_bitmask
[1] & FATTR4_WORD1_NUMLINKS
)
2053 server
->caps
|= NFS_CAP_NLINK
;
2054 if (res
.attr_bitmask
[1] & FATTR4_WORD1_OWNER
)
2055 server
->caps
|= NFS_CAP_OWNER
;
2056 if (res
.attr_bitmask
[1] & FATTR4_WORD1_OWNER_GROUP
)
2057 server
->caps
|= NFS_CAP_OWNER_GROUP
;
2058 if (res
.attr_bitmask
[1] & FATTR4_WORD1_TIME_ACCESS
)
2059 server
->caps
|= NFS_CAP_ATIME
;
2060 if (res
.attr_bitmask
[1] & FATTR4_WORD1_TIME_METADATA
)
2061 server
->caps
|= NFS_CAP_CTIME
;
2062 if (res
.attr_bitmask
[1] & FATTR4_WORD1_TIME_MODIFY
)
2063 server
->caps
|= NFS_CAP_MTIME
;
2065 memcpy(server
->cache_consistency_bitmask
, res
.attr_bitmask
, sizeof(server
->cache_consistency_bitmask
));
2066 server
->cache_consistency_bitmask
[0] &= FATTR4_WORD0_CHANGE
|FATTR4_WORD0_SIZE
;
2067 server
->cache_consistency_bitmask
[1] &= FATTR4_WORD1_TIME_METADATA
|FATTR4_WORD1_TIME_MODIFY
;
2068 server
->acl_bitmask
= res
.acl_bitmask
;
2074 int nfs4_server_capabilities(struct nfs_server
*server
, struct nfs_fh
*fhandle
)
2076 struct nfs4_exception exception
= { };
2079 err
= nfs4_handle_exception(server
,
2080 _nfs4_server_capabilities(server
, fhandle
),
2082 } while (exception
.retry
);
2086 static int _nfs4_lookup_root(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
2087 struct nfs_fsinfo
*info
)
2089 struct nfs4_lookup_root_arg args
= {
2090 .bitmask
= nfs4_fattr_bitmap
,
2092 struct nfs4_lookup_res res
= {
2094 .fattr
= info
->fattr
,
2097 struct rpc_message msg
= {
2098 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOOKUP_ROOT
],
2103 nfs_fattr_init(info
->fattr
);
2104 return nfs4_call_sync(server
, &msg
, &args
, &res
, 0);
2107 static int nfs4_lookup_root(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
2108 struct nfs_fsinfo
*info
)
2110 struct nfs4_exception exception
= { };
2113 err
= nfs4_handle_exception(server
,
2114 _nfs4_lookup_root(server
, fhandle
, info
),
2116 } while (exception
.retry
);
2121 * get the file handle for the "/" directory on the server
2123 static int nfs4_proc_get_root(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
2124 struct nfs_fsinfo
*info
)
2128 status
= nfs4_lookup_root(server
, fhandle
, info
);
2130 status
= nfs4_server_capabilities(server
, fhandle
);
2132 status
= nfs4_do_fsinfo(server
, fhandle
, info
);
2133 return nfs4_map_errors(status
);
2137 * Get locations and (maybe) other attributes of a referral.
2138 * Note that we'll actually follow the referral later when
2139 * we detect fsid mismatch in inode revalidation
2141 static int nfs4_get_referral(struct inode
*dir
, const struct qstr
*name
, struct nfs_fattr
*fattr
, struct nfs_fh
*fhandle
)
2143 int status
= -ENOMEM
;
2144 struct page
*page
= NULL
;
2145 struct nfs4_fs_locations
*locations
= NULL
;
2147 page
= alloc_page(GFP_KERNEL
);
2150 locations
= kmalloc(sizeof(struct nfs4_fs_locations
), GFP_KERNEL
);
2151 if (locations
== NULL
)
2154 status
= nfs4_proc_fs_locations(dir
, name
, locations
, page
);
2157 /* Make sure server returned a different fsid for the referral */
2158 if (nfs_fsid_equal(&NFS_SERVER(dir
)->fsid
, &locations
->fattr
.fsid
)) {
2159 dprintk("%s: server did not return a different fsid for a referral at %s\n", __func__
, name
->name
);
2164 memcpy(fattr
, &locations
->fattr
, sizeof(struct nfs_fattr
));
2165 fattr
->valid
|= NFS_ATTR_FATTR_V4_REFERRAL
;
2167 fattr
->mode
= S_IFDIR
;
2168 memset(fhandle
, 0, sizeof(struct nfs_fh
));
2177 static int _nfs4_proc_getattr(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fattr
*fattr
)
2179 struct nfs4_getattr_arg args
= {
2181 .bitmask
= server
->attr_bitmask
,
2183 struct nfs4_getattr_res res
= {
2187 struct rpc_message msg
= {
2188 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GETATTR
],
2193 nfs_fattr_init(fattr
);
2194 return nfs4_call_sync(server
, &msg
, &args
, &res
, 0);
2197 static int nfs4_proc_getattr(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fattr
*fattr
)
2199 struct nfs4_exception exception
= { };
2202 err
= nfs4_handle_exception(server
,
2203 _nfs4_proc_getattr(server
, fhandle
, fattr
),
2205 } while (exception
.retry
);
2210 * The file is not closed if it is opened due to the a request to change
2211 * the size of the file. The open call will not be needed once the
2212 * VFS layer lookup-intents are implemented.
2214 * Close is called when the inode is destroyed.
2215 * If we haven't opened the file for O_WRONLY, we
2216 * need to in the size_change case to obtain a stateid.
2219 * Because OPEN is always done by name in nfsv4, it is
2220 * possible that we opened a different file by the same
2221 * name. We can recognize this race condition, but we
2222 * can't do anything about it besides returning an error.
2224 * This will be fixed with VFS changes (lookup-intent).
2227 nfs4_proc_setattr(struct dentry
*dentry
, struct nfs_fattr
*fattr
,
2228 struct iattr
*sattr
)
2230 struct inode
*inode
= dentry
->d_inode
;
2231 struct rpc_cred
*cred
= NULL
;
2232 struct nfs4_state
*state
= NULL
;
2235 nfs_fattr_init(fattr
);
2237 /* Search for an existing open(O_WRITE) file */
2238 if (sattr
->ia_valid
& ATTR_FILE
) {
2239 struct nfs_open_context
*ctx
;
2241 ctx
= nfs_file_open_context(sattr
->ia_file
);
2248 status
= nfs4_do_setattr(inode
, cred
, fattr
, sattr
, state
);
2250 nfs_setattr_update_inode(inode
, sattr
);
2254 static int _nfs4_proc_lookupfh(struct nfs_server
*server
, const struct nfs_fh
*dirfh
,
2255 const struct qstr
*name
, struct nfs_fh
*fhandle
,
2256 struct nfs_fattr
*fattr
)
2259 struct nfs4_lookup_arg args
= {
2260 .bitmask
= server
->attr_bitmask
,
2264 struct nfs4_lookup_res res
= {
2269 struct rpc_message msg
= {
2270 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOOKUP
],
2275 nfs_fattr_init(fattr
);
2277 dprintk("NFS call lookupfh %s\n", name
->name
);
2278 status
= nfs4_call_sync(server
, &msg
, &args
, &res
, 0);
2279 dprintk("NFS reply lookupfh: %d\n", status
);
2283 static int nfs4_proc_lookupfh(struct nfs_server
*server
, struct nfs_fh
*dirfh
,
2284 struct qstr
*name
, struct nfs_fh
*fhandle
,
2285 struct nfs_fattr
*fattr
)
2287 struct nfs4_exception exception
= { };
2290 err
= _nfs4_proc_lookupfh(server
, dirfh
, name
, fhandle
, fattr
);
2292 if (err
== -NFS4ERR_MOVED
) {
2296 err
= nfs4_handle_exception(server
, err
, &exception
);
2297 } while (exception
.retry
);
2301 static int _nfs4_proc_lookup(struct inode
*dir
, const struct qstr
*name
,
2302 struct nfs_fh
*fhandle
, struct nfs_fattr
*fattr
)
2306 dprintk("NFS call lookup %s\n", name
->name
);
2307 status
= _nfs4_proc_lookupfh(NFS_SERVER(dir
), NFS_FH(dir
), name
, fhandle
, fattr
);
2308 if (status
== -NFS4ERR_MOVED
)
2309 status
= nfs4_get_referral(dir
, name
, fattr
, fhandle
);
2310 dprintk("NFS reply lookup: %d\n", status
);
2314 static int nfs4_proc_lookup(struct inode
*dir
, struct qstr
*name
, struct nfs_fh
*fhandle
, struct nfs_fattr
*fattr
)
2316 struct nfs4_exception exception
= { };
2319 err
= nfs4_handle_exception(NFS_SERVER(dir
),
2320 _nfs4_proc_lookup(dir
, name
, fhandle
, fattr
),
2322 } while (exception
.retry
);
2326 static int _nfs4_proc_access(struct inode
*inode
, struct nfs_access_entry
*entry
)
2328 struct nfs_server
*server
= NFS_SERVER(inode
);
2329 struct nfs_fattr fattr
;
2330 struct nfs4_accessargs args
= {
2331 .fh
= NFS_FH(inode
),
2332 .bitmask
= server
->attr_bitmask
,
2334 struct nfs4_accessres res
= {
2338 struct rpc_message msg
= {
2339 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_ACCESS
],
2342 .rpc_cred
= entry
->cred
,
2344 int mode
= entry
->mask
;
2348 * Determine which access bits we want to ask for...
2350 if (mode
& MAY_READ
)
2351 args
.access
|= NFS4_ACCESS_READ
;
2352 if (S_ISDIR(inode
->i_mode
)) {
2353 if (mode
& MAY_WRITE
)
2354 args
.access
|= NFS4_ACCESS_MODIFY
| NFS4_ACCESS_EXTEND
| NFS4_ACCESS_DELETE
;
2355 if (mode
& MAY_EXEC
)
2356 args
.access
|= NFS4_ACCESS_LOOKUP
;
2358 if (mode
& MAY_WRITE
)
2359 args
.access
|= NFS4_ACCESS_MODIFY
| NFS4_ACCESS_EXTEND
;
2360 if (mode
& MAY_EXEC
)
2361 args
.access
|= NFS4_ACCESS_EXECUTE
;
2363 nfs_fattr_init(&fattr
);
2364 status
= nfs4_call_sync(server
, &msg
, &args
, &res
, 0);
2367 if (res
.access
& NFS4_ACCESS_READ
)
2368 entry
->mask
|= MAY_READ
;
2369 if (res
.access
& (NFS4_ACCESS_MODIFY
| NFS4_ACCESS_EXTEND
| NFS4_ACCESS_DELETE
))
2370 entry
->mask
|= MAY_WRITE
;
2371 if (res
.access
& (NFS4_ACCESS_LOOKUP
|NFS4_ACCESS_EXECUTE
))
2372 entry
->mask
|= MAY_EXEC
;
2373 nfs_refresh_inode(inode
, &fattr
);
2378 static int nfs4_proc_access(struct inode
*inode
, struct nfs_access_entry
*entry
)
2380 struct nfs4_exception exception
= { };
2383 err
= nfs4_handle_exception(NFS_SERVER(inode
),
2384 _nfs4_proc_access(inode
, entry
),
2386 } while (exception
.retry
);
2391 * TODO: For the time being, we don't try to get any attributes
2392 * along with any of the zero-copy operations READ, READDIR,
2395 * In the case of the first three, we want to put the GETATTR
2396 * after the read-type operation -- this is because it is hard
2397 * to predict the length of a GETATTR response in v4, and thus
2398 * align the READ data correctly. This means that the GETATTR
2399 * may end up partially falling into the page cache, and we should
2400 * shift it into the 'tail' of the xdr_buf before processing.
2401 * To do this efficiently, we need to know the total length
2402 * of data received, which doesn't seem to be available outside
2405 * In the case of WRITE, we also want to put the GETATTR after
2406 * the operation -- in this case because we want to make sure
2407 * we get the post-operation mtime and size. This means that
2408 * we can't use xdr_encode_pages() as written: we need a variant
2409 * of it which would leave room in the 'tail' iovec.
2411 * Both of these changes to the XDR layer would in fact be quite
2412 * minor, but I decided to leave them for a subsequent patch.
2414 static int _nfs4_proc_readlink(struct inode
*inode
, struct page
*page
,
2415 unsigned int pgbase
, unsigned int pglen
)
2417 struct nfs4_readlink args
= {
2418 .fh
= NFS_FH(inode
),
2423 struct nfs4_readlink_res res
;
2424 struct rpc_message msg
= {
2425 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_READLINK
],
2430 return nfs4_call_sync(NFS_SERVER(inode
), &msg
, &args
, &res
, 0);
2433 static int nfs4_proc_readlink(struct inode
*inode
, struct page
*page
,
2434 unsigned int pgbase
, unsigned int pglen
)
2436 struct nfs4_exception exception
= { };
2439 err
= nfs4_handle_exception(NFS_SERVER(inode
),
2440 _nfs4_proc_readlink(inode
, page
, pgbase
, pglen
),
2442 } while (exception
.retry
);
2448 * We will need to arrange for the VFS layer to provide an atomic open.
2449 * Until then, this create/open method is prone to inefficiency and race
2450 * conditions due to the lookup, create, and open VFS calls from sys_open()
2451 * placed on the wire.
2453 * Given the above sorry state of affairs, I'm simply sending an OPEN.
2454 * The file will be opened again in the subsequent VFS open call
2455 * (nfs4_proc_file_open).
2457 * The open for read will just hang around to be used by any process that
2458 * opens the file O_RDONLY. This will all be resolved with the VFS changes.
2462 nfs4_proc_create(struct inode
*dir
, struct dentry
*dentry
, struct iattr
*sattr
,
2463 int flags
, struct nameidata
*nd
)
2465 struct path path
= {
2466 .mnt
= nd
->path
.mnt
,
2469 struct nfs4_state
*state
;
2470 struct rpc_cred
*cred
;
2471 fmode_t fmode
= flags
& (FMODE_READ
| FMODE_WRITE
);
2474 cred
= rpc_lookup_cred();
2476 status
= PTR_ERR(cred
);
2479 state
= nfs4_do_open(dir
, &path
, fmode
, flags
, sattr
, cred
);
2481 if (IS_ERR(state
)) {
2482 status
= PTR_ERR(state
);
2485 d_add(dentry
, igrab(state
->inode
));
2486 nfs_set_verifier(dentry
, nfs_save_change_attribute(dir
));
2487 if (flags
& O_EXCL
) {
2488 struct nfs_fattr fattr
;
2489 status
= nfs4_do_setattr(state
->inode
, cred
, &fattr
, sattr
, state
);
2491 nfs_setattr_update_inode(state
->inode
, sattr
);
2492 nfs_post_op_update_inode(state
->inode
, &fattr
);
2494 if (status
== 0 && (nd
->flags
& LOOKUP_OPEN
) != 0)
2495 status
= nfs4_intent_set_file(nd
, &path
, state
, fmode
);
2497 nfs4_close_sync(&path
, state
, fmode
);
2504 static int _nfs4_proc_remove(struct inode
*dir
, struct qstr
*name
)
2506 struct nfs_server
*server
= NFS_SERVER(dir
);
2507 struct nfs_removeargs args
= {
2509 .name
.len
= name
->len
,
2510 .name
.name
= name
->name
,
2511 .bitmask
= server
->attr_bitmask
,
2513 struct nfs_removeres res
= {
2516 struct rpc_message msg
= {
2517 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_REMOVE
],
2523 nfs_fattr_init(&res
.dir_attr
);
2524 status
= nfs4_call_sync(server
, &msg
, &args
, &res
, 1);
2526 update_changeattr(dir
, &res
.cinfo
);
2527 nfs_post_op_update_inode(dir
, &res
.dir_attr
);
2532 static int nfs4_proc_remove(struct inode
*dir
, struct qstr
*name
)
2534 struct nfs4_exception exception
= { };
2537 err
= nfs4_handle_exception(NFS_SERVER(dir
),
2538 _nfs4_proc_remove(dir
, name
),
2540 } while (exception
.retry
);
2544 static void nfs4_proc_unlink_setup(struct rpc_message
*msg
, struct inode
*dir
)
2546 struct nfs_server
*server
= NFS_SERVER(dir
);
2547 struct nfs_removeargs
*args
= msg
->rpc_argp
;
2548 struct nfs_removeres
*res
= msg
->rpc_resp
;
2550 args
->bitmask
= server
->cache_consistency_bitmask
;
2551 res
->server
= server
;
2552 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_REMOVE
];
2555 static int nfs4_proc_unlink_done(struct rpc_task
*task
, struct inode
*dir
)
2557 struct nfs_removeres
*res
= task
->tk_msg
.rpc_resp
;
2559 nfs4_sequence_done(res
->server
, &res
->seq_res
, task
->tk_status
);
2560 if (nfs4_async_handle_error(task
, res
->server
, NULL
) == -EAGAIN
)
2562 nfs4_sequence_free_slot(res
->server
->nfs_client
, &res
->seq_res
);
2563 update_changeattr(dir
, &res
->cinfo
);
2564 nfs_post_op_update_inode(dir
, &res
->dir_attr
);
2568 static int _nfs4_proc_rename(struct inode
*old_dir
, struct qstr
*old_name
,
2569 struct inode
*new_dir
, struct qstr
*new_name
)
2571 struct nfs_server
*server
= NFS_SERVER(old_dir
);
2572 struct nfs4_rename_arg arg
= {
2573 .old_dir
= NFS_FH(old_dir
),
2574 .new_dir
= NFS_FH(new_dir
),
2575 .old_name
= old_name
,
2576 .new_name
= new_name
,
2577 .bitmask
= server
->attr_bitmask
,
2579 struct nfs_fattr old_fattr
, new_fattr
;
2580 struct nfs4_rename_res res
= {
2582 .old_fattr
= &old_fattr
,
2583 .new_fattr
= &new_fattr
,
2585 struct rpc_message msg
= {
2586 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RENAME
],
2592 nfs_fattr_init(res
.old_fattr
);
2593 nfs_fattr_init(res
.new_fattr
);
2594 status
= nfs4_call_sync(server
, &msg
, &arg
, &res
, 1);
2597 update_changeattr(old_dir
, &res
.old_cinfo
);
2598 nfs_post_op_update_inode(old_dir
, res
.old_fattr
);
2599 update_changeattr(new_dir
, &res
.new_cinfo
);
2600 nfs_post_op_update_inode(new_dir
, res
.new_fattr
);
2605 static int nfs4_proc_rename(struct inode
*old_dir
, struct qstr
*old_name
,
2606 struct inode
*new_dir
, struct qstr
*new_name
)
2608 struct nfs4_exception exception
= { };
2611 err
= nfs4_handle_exception(NFS_SERVER(old_dir
),
2612 _nfs4_proc_rename(old_dir
, old_name
,
2615 } while (exception
.retry
);
2619 static int _nfs4_proc_link(struct inode
*inode
, struct inode
*dir
, struct qstr
*name
)
2621 struct nfs_server
*server
= NFS_SERVER(inode
);
2622 struct nfs4_link_arg arg
= {
2623 .fh
= NFS_FH(inode
),
2624 .dir_fh
= NFS_FH(dir
),
2626 .bitmask
= server
->attr_bitmask
,
2628 struct nfs_fattr fattr
, dir_attr
;
2629 struct nfs4_link_res res
= {
2632 .dir_attr
= &dir_attr
,
2634 struct rpc_message msg
= {
2635 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LINK
],
2641 nfs_fattr_init(res
.fattr
);
2642 nfs_fattr_init(res
.dir_attr
);
2643 status
= nfs4_call_sync(server
, &msg
, &arg
, &res
, 1);
2645 update_changeattr(dir
, &res
.cinfo
);
2646 nfs_post_op_update_inode(dir
, res
.dir_attr
);
2647 nfs_post_op_update_inode(inode
, res
.fattr
);
2653 static int nfs4_proc_link(struct inode
*inode
, struct inode
*dir
, struct qstr
*name
)
2655 struct nfs4_exception exception
= { };
2658 err
= nfs4_handle_exception(NFS_SERVER(inode
),
2659 _nfs4_proc_link(inode
, dir
, name
),
2661 } while (exception
.retry
);
2665 struct nfs4_createdata
{
2666 struct rpc_message msg
;
2667 struct nfs4_create_arg arg
;
2668 struct nfs4_create_res res
;
2670 struct nfs_fattr fattr
;
2671 struct nfs_fattr dir_fattr
;
2674 static struct nfs4_createdata
*nfs4_alloc_createdata(struct inode
*dir
,
2675 struct qstr
*name
, struct iattr
*sattr
, u32 ftype
)
2677 struct nfs4_createdata
*data
;
2679 data
= kzalloc(sizeof(*data
), GFP_KERNEL
);
2681 struct nfs_server
*server
= NFS_SERVER(dir
);
2683 data
->msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_CREATE
];
2684 data
->msg
.rpc_argp
= &data
->arg
;
2685 data
->msg
.rpc_resp
= &data
->res
;
2686 data
->arg
.dir_fh
= NFS_FH(dir
);
2687 data
->arg
.server
= server
;
2688 data
->arg
.name
= name
;
2689 data
->arg
.attrs
= sattr
;
2690 data
->arg
.ftype
= ftype
;
2691 data
->arg
.bitmask
= server
->attr_bitmask
;
2692 data
->res
.server
= server
;
2693 data
->res
.fh
= &data
->fh
;
2694 data
->res
.fattr
= &data
->fattr
;
2695 data
->res
.dir_fattr
= &data
->dir_fattr
;
2696 nfs_fattr_init(data
->res
.fattr
);
2697 nfs_fattr_init(data
->res
.dir_fattr
);
2702 static int nfs4_do_create(struct inode
*dir
, struct dentry
*dentry
, struct nfs4_createdata
*data
)
2704 int status
= nfs4_call_sync(NFS_SERVER(dir
), &data
->msg
,
2705 &data
->arg
, &data
->res
, 1);
2707 update_changeattr(dir
, &data
->res
.dir_cinfo
);
2708 nfs_post_op_update_inode(dir
, data
->res
.dir_fattr
);
2709 status
= nfs_instantiate(dentry
, data
->res
.fh
, data
->res
.fattr
);
2714 static void nfs4_free_createdata(struct nfs4_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_createdata
*data
;
2723 int status
= -ENAMETOOLONG
;
2725 if (len
> NFS4_MAXPATHLEN
)
2729 data
= nfs4_alloc_createdata(dir
, &dentry
->d_name
, sattr
, NF4LNK
);
2733 data
->msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SYMLINK
];
2734 data
->arg
.u
.symlink
.pages
= &page
;
2735 data
->arg
.u
.symlink
.len
= len
;
2737 status
= nfs4_do_create(dir
, dentry
, data
);
2739 nfs4_free_createdata(data
);
2744 static int nfs4_proc_symlink(struct inode
*dir
, struct dentry
*dentry
,
2745 struct page
*page
, unsigned int len
, struct iattr
*sattr
)
2747 struct nfs4_exception exception
= { };
2750 err
= nfs4_handle_exception(NFS_SERVER(dir
),
2751 _nfs4_proc_symlink(dir
, dentry
, page
,
2754 } while (exception
.retry
);
2758 static int _nfs4_proc_mkdir(struct inode
*dir
, struct dentry
*dentry
,
2759 struct iattr
*sattr
)
2761 struct nfs4_createdata
*data
;
2762 int status
= -ENOMEM
;
2764 data
= nfs4_alloc_createdata(dir
, &dentry
->d_name
, sattr
, NF4DIR
);
2768 status
= nfs4_do_create(dir
, dentry
, data
);
2770 nfs4_free_createdata(data
);
2775 static int nfs4_proc_mkdir(struct inode
*dir
, struct dentry
*dentry
,
2776 struct iattr
*sattr
)
2778 struct nfs4_exception exception
= { };
2781 err
= nfs4_handle_exception(NFS_SERVER(dir
),
2782 _nfs4_proc_mkdir(dir
, dentry
, sattr
),
2784 } while (exception
.retry
);
2788 static int _nfs4_proc_readdir(struct dentry
*dentry
, struct rpc_cred
*cred
,
2789 u64 cookie
, struct page
*page
, unsigned int count
, int plus
)
2791 struct inode
*dir
= dentry
->d_inode
;
2792 struct nfs4_readdir_arg args
= {
2797 .bitmask
= NFS_SERVER(dentry
->d_inode
)->attr_bitmask
,
2799 struct nfs4_readdir_res res
;
2800 struct rpc_message msg
= {
2801 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_READDIR
],
2808 dprintk("%s: dentry = %s/%s, cookie = %Lu\n", __func__
,
2809 dentry
->d_parent
->d_name
.name
,
2810 dentry
->d_name
.name
,
2811 (unsigned long long)cookie
);
2812 nfs4_setup_readdir(cookie
, NFS_COOKIEVERF(dir
), dentry
, &args
);
2813 res
.pgbase
= args
.pgbase
;
2814 status
= nfs4_call_sync(NFS_SERVER(dir
), &msg
, &args
, &res
, 0);
2816 memcpy(NFS_COOKIEVERF(dir
), res
.verifier
.data
, NFS4_VERIFIER_SIZE
);
2818 nfs_invalidate_atime(dir
);
2820 dprintk("%s: returns %d\n", __func__
, status
);
2824 static int nfs4_proc_readdir(struct dentry
*dentry
, struct rpc_cred
*cred
,
2825 u64 cookie
, struct page
*page
, unsigned int count
, int plus
)
2827 struct nfs4_exception exception
= { };
2830 err
= nfs4_handle_exception(NFS_SERVER(dentry
->d_inode
),
2831 _nfs4_proc_readdir(dentry
, cred
, cookie
,
2834 } while (exception
.retry
);
2838 static int _nfs4_proc_mknod(struct inode
*dir
, struct dentry
*dentry
,
2839 struct iattr
*sattr
, dev_t rdev
)
2841 struct nfs4_createdata
*data
;
2842 int mode
= sattr
->ia_mode
;
2843 int status
= -ENOMEM
;
2845 BUG_ON(!(sattr
->ia_valid
& ATTR_MODE
));
2846 BUG_ON(!S_ISFIFO(mode
) && !S_ISBLK(mode
) && !S_ISCHR(mode
) && !S_ISSOCK(mode
));
2848 data
= nfs4_alloc_createdata(dir
, &dentry
->d_name
, sattr
, NF4SOCK
);
2853 data
->arg
.ftype
= NF4FIFO
;
2854 else if (S_ISBLK(mode
)) {
2855 data
->arg
.ftype
= NF4BLK
;
2856 data
->arg
.u
.device
.specdata1
= MAJOR(rdev
);
2857 data
->arg
.u
.device
.specdata2
= MINOR(rdev
);
2859 else if (S_ISCHR(mode
)) {
2860 data
->arg
.ftype
= NF4CHR
;
2861 data
->arg
.u
.device
.specdata1
= MAJOR(rdev
);
2862 data
->arg
.u
.device
.specdata2
= MINOR(rdev
);
2865 status
= nfs4_do_create(dir
, dentry
, data
);
2867 nfs4_free_createdata(data
);
2872 static int nfs4_proc_mknod(struct inode
*dir
, struct dentry
*dentry
,
2873 struct iattr
*sattr
, dev_t rdev
)
2875 struct nfs4_exception exception
= { };
2878 err
= nfs4_handle_exception(NFS_SERVER(dir
),
2879 _nfs4_proc_mknod(dir
, dentry
, sattr
, rdev
),
2881 } while (exception
.retry
);
2885 static int _nfs4_proc_statfs(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
2886 struct nfs_fsstat
*fsstat
)
2888 struct nfs4_statfs_arg args
= {
2890 .bitmask
= server
->attr_bitmask
,
2892 struct nfs4_statfs_res res
= {
2895 struct rpc_message msg
= {
2896 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_STATFS
],
2901 nfs_fattr_init(fsstat
->fattr
);
2902 return nfs4_call_sync(server
, &msg
, &args
, &res
, 0);
2905 static int nfs4_proc_statfs(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fsstat
*fsstat
)
2907 struct nfs4_exception exception
= { };
2910 err
= nfs4_handle_exception(server
,
2911 _nfs4_proc_statfs(server
, fhandle
, fsstat
),
2913 } while (exception
.retry
);
2917 static int _nfs4_do_fsinfo(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
2918 struct nfs_fsinfo
*fsinfo
)
2920 struct nfs4_fsinfo_arg args
= {
2922 .bitmask
= server
->attr_bitmask
,
2924 struct nfs4_fsinfo_res res
= {
2927 struct rpc_message msg
= {
2928 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_FSINFO
],
2933 return nfs4_call_sync(server
, &msg
, &args
, &res
, 0);
2936 static int nfs4_do_fsinfo(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fsinfo
*fsinfo
)
2938 struct nfs4_exception exception
= { };
2942 err
= nfs4_handle_exception(server
,
2943 _nfs4_do_fsinfo(server
, fhandle
, fsinfo
),
2945 } while (exception
.retry
);
2949 static int nfs4_proc_fsinfo(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fsinfo
*fsinfo
)
2951 nfs_fattr_init(fsinfo
->fattr
);
2952 return nfs4_do_fsinfo(server
, fhandle
, fsinfo
);
2955 static int _nfs4_proc_pathconf(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
2956 struct nfs_pathconf
*pathconf
)
2958 struct nfs4_pathconf_arg args
= {
2960 .bitmask
= server
->attr_bitmask
,
2962 struct nfs4_pathconf_res res
= {
2963 .pathconf
= pathconf
,
2965 struct rpc_message msg
= {
2966 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_PATHCONF
],
2971 /* None of the pathconf attributes are mandatory to implement */
2972 if ((args
.bitmask
[0] & nfs4_pathconf_bitmap
[0]) == 0) {
2973 memset(pathconf
, 0, sizeof(*pathconf
));
2977 nfs_fattr_init(pathconf
->fattr
);
2978 return nfs4_call_sync(server
, &msg
, &args
, &res
, 0);
2981 static int nfs4_proc_pathconf(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
2982 struct nfs_pathconf
*pathconf
)
2984 struct nfs4_exception exception
= { };
2988 err
= nfs4_handle_exception(server
,
2989 _nfs4_proc_pathconf(server
, fhandle
, pathconf
),
2991 } while (exception
.retry
);
2995 static int nfs4_read_done(struct rpc_task
*task
, struct nfs_read_data
*data
)
2997 struct nfs_server
*server
= NFS_SERVER(data
->inode
);
2999 dprintk("--> %s\n", __func__
);
3001 /* nfs4_sequence_free_slot called in the read rpc_call_done */
3002 nfs4_sequence_done(server
, &data
->res
.seq_res
, task
->tk_status
);
3004 if (nfs4_async_handle_error(task
, server
, data
->args
.context
->state
) == -EAGAIN
) {
3005 nfs4_restart_rpc(task
, server
->nfs_client
, &data
->res
.seq_res
);
3009 nfs_invalidate_atime(data
->inode
);
3010 if (task
->tk_status
> 0)
3011 renew_lease(server
, data
->timestamp
);
3015 static void nfs4_proc_read_setup(struct nfs_read_data
*data
, struct rpc_message
*msg
)
3017 data
->timestamp
= jiffies
;
3018 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_READ
];
3021 static int nfs4_write_done(struct rpc_task
*task
, struct nfs_write_data
*data
)
3023 struct inode
*inode
= data
->inode
;
3025 /* slot is freed in nfs_writeback_done */
3026 nfs4_sequence_done(NFS_SERVER(inode
), &data
->res
.seq_res
,
3029 if (nfs4_async_handle_error(task
, NFS_SERVER(inode
), data
->args
.context
->state
) == -EAGAIN
) {
3030 nfs4_restart_rpc(task
, NFS_SERVER(inode
)->nfs_client
,
3031 &data
->res
.seq_res
);
3034 if (task
->tk_status
>= 0) {
3035 renew_lease(NFS_SERVER(inode
), data
->timestamp
);
3036 nfs_post_op_update_inode_force_wcc(inode
, data
->res
.fattr
);
3041 static void nfs4_proc_write_setup(struct nfs_write_data
*data
, struct rpc_message
*msg
)
3043 struct nfs_server
*server
= NFS_SERVER(data
->inode
);
3045 data
->args
.bitmask
= server
->cache_consistency_bitmask
;
3046 data
->res
.server
= server
;
3047 data
->timestamp
= jiffies
;
3049 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_WRITE
];
3052 static int nfs4_commit_done(struct rpc_task
*task
, struct nfs_write_data
*data
)
3054 struct inode
*inode
= data
->inode
;
3056 nfs4_sequence_done(NFS_SERVER(inode
), &data
->res
.seq_res
,
3058 if (nfs4_async_handle_error(task
, NFS_SERVER(inode
), NULL
) == -EAGAIN
) {
3059 nfs4_restart_rpc(task
, NFS_SERVER(inode
)->nfs_client
,
3060 &data
->res
.seq_res
);
3063 nfs4_sequence_free_slot(NFS_SERVER(inode
)->nfs_client
,
3064 &data
->res
.seq_res
);
3065 nfs_refresh_inode(inode
, data
->res
.fattr
);
3069 static void nfs4_proc_commit_setup(struct nfs_write_data
*data
, struct rpc_message
*msg
)
3071 struct nfs_server
*server
= NFS_SERVER(data
->inode
);
3073 data
->args
.bitmask
= server
->cache_consistency_bitmask
;
3074 data
->res
.server
= server
;
3075 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_COMMIT
];
3079 * nfs4_proc_async_renew(): This is not one of the nfs_rpc_ops; it is a special
3080 * standalone procedure for queueing an asynchronous RENEW.
3082 static void nfs4_renew_done(struct rpc_task
*task
, void *data
)
3084 struct nfs_client
*clp
= (struct nfs_client
*)task
->tk_msg
.rpc_argp
;
3085 unsigned long timestamp
= (unsigned long)data
;
3087 if (task
->tk_status
< 0) {
3088 /* Unless we're shutting down, schedule state recovery! */
3089 if (test_bit(NFS_CS_RENEWD
, &clp
->cl_res_state
) != 0)
3090 nfs4_schedule_state_recovery(clp
);
3093 spin_lock(&clp
->cl_lock
);
3094 if (time_before(clp
->cl_last_renewal
,timestamp
))
3095 clp
->cl_last_renewal
= timestamp
;
3096 spin_unlock(&clp
->cl_lock
);
3099 static const struct rpc_call_ops nfs4_renew_ops
= {
3100 .rpc_call_done
= nfs4_renew_done
,
3103 int nfs4_proc_async_renew(struct nfs_client
*clp
, struct rpc_cred
*cred
)
3105 struct rpc_message msg
= {
3106 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RENEW
],
3111 return rpc_call_async(clp
->cl_rpcclient
, &msg
, RPC_TASK_SOFT
,
3112 &nfs4_renew_ops
, (void *)jiffies
);
3115 int nfs4_proc_renew(struct nfs_client
*clp
, struct rpc_cred
*cred
)
3117 struct rpc_message msg
= {
3118 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RENEW
],
3122 unsigned long now
= jiffies
;
3125 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, 0);
3128 spin_lock(&clp
->cl_lock
);
3129 if (time_before(clp
->cl_last_renewal
,now
))
3130 clp
->cl_last_renewal
= now
;
3131 spin_unlock(&clp
->cl_lock
);
3135 static inline int nfs4_server_supports_acls(struct nfs_server
*server
)
3137 return (server
->caps
& NFS_CAP_ACLS
)
3138 && (server
->acl_bitmask
& ACL4_SUPPORT_ALLOW_ACL
)
3139 && (server
->acl_bitmask
& ACL4_SUPPORT_DENY_ACL
);
3142 /* Assuming that XATTR_SIZE_MAX is a multiple of PAGE_CACHE_SIZE, and that
3143 * it's OK to put sizeof(void) * (XATTR_SIZE_MAX/PAGE_CACHE_SIZE) bytes on
3146 #define NFS4ACL_MAXPAGES (XATTR_SIZE_MAX >> PAGE_CACHE_SHIFT)
3148 static void buf_to_pages(const void *buf
, size_t buflen
,
3149 struct page
**pages
, unsigned int *pgbase
)
3151 const void *p
= buf
;
3153 *pgbase
= offset_in_page(buf
);
3155 while (p
< buf
+ buflen
) {
3156 *(pages
++) = virt_to_page(p
);
3157 p
+= PAGE_CACHE_SIZE
;
3161 struct nfs4_cached_acl
{
3167 static void nfs4_set_cached_acl(struct inode
*inode
, struct nfs4_cached_acl
*acl
)
3169 struct nfs_inode
*nfsi
= NFS_I(inode
);
3171 spin_lock(&inode
->i_lock
);
3172 kfree(nfsi
->nfs4_acl
);
3173 nfsi
->nfs4_acl
= acl
;
3174 spin_unlock(&inode
->i_lock
);
3177 static void nfs4_zap_acl_attr(struct inode
*inode
)
3179 nfs4_set_cached_acl(inode
, NULL
);
3182 static inline ssize_t
nfs4_read_cached_acl(struct inode
*inode
, char *buf
, size_t buflen
)
3184 struct nfs_inode
*nfsi
= NFS_I(inode
);
3185 struct nfs4_cached_acl
*acl
;
3188 spin_lock(&inode
->i_lock
);
3189 acl
= nfsi
->nfs4_acl
;
3192 if (buf
== NULL
) /* user is just asking for length */
3194 if (acl
->cached
== 0)
3196 ret
= -ERANGE
; /* see getxattr(2) man page */
3197 if (acl
->len
> buflen
)
3199 memcpy(buf
, acl
->data
, acl
->len
);
3203 spin_unlock(&inode
->i_lock
);
3207 static void nfs4_write_cached_acl(struct inode
*inode
, const char *buf
, size_t acl_len
)
3209 struct nfs4_cached_acl
*acl
;
3211 if (buf
&& acl_len
<= PAGE_SIZE
) {
3212 acl
= kmalloc(sizeof(*acl
) + acl_len
, GFP_KERNEL
);
3216 memcpy(acl
->data
, buf
, acl_len
);
3218 acl
= kmalloc(sizeof(*acl
), GFP_KERNEL
);
3225 nfs4_set_cached_acl(inode
, acl
);
3228 static ssize_t
__nfs4_get_acl_uncached(struct inode
*inode
, void *buf
, size_t buflen
)
3230 struct page
*pages
[NFS4ACL_MAXPAGES
];
3231 struct nfs_getaclargs args
= {
3232 .fh
= NFS_FH(inode
),
3236 struct nfs_getaclres res
= {
3240 struct rpc_message msg
= {
3241 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GETACL
],
3245 struct page
*localpage
= NULL
;
3248 if (buflen
< PAGE_SIZE
) {
3249 /* As long as we're doing a round trip to the server anyway,
3250 * let's be prepared for a page of acl data. */
3251 localpage
= alloc_page(GFP_KERNEL
);
3252 resp_buf
= page_address(localpage
);
3253 if (localpage
== NULL
)
3255 args
.acl_pages
[0] = localpage
;
3256 args
.acl_pgbase
= 0;
3257 args
.acl_len
= PAGE_SIZE
;
3260 buf_to_pages(buf
, buflen
, args
.acl_pages
, &args
.acl_pgbase
);
3262 ret
= nfs4_call_sync(NFS_SERVER(inode
), &msg
, &args
, &res
, 0);
3265 if (res
.acl_len
> args
.acl_len
)
3266 nfs4_write_cached_acl(inode
, NULL
, res
.acl_len
);
3268 nfs4_write_cached_acl(inode
, resp_buf
, res
.acl_len
);
3271 if (res
.acl_len
> buflen
)
3274 memcpy(buf
, resp_buf
, res
.acl_len
);
3279 __free_page(localpage
);
3283 static ssize_t
nfs4_get_acl_uncached(struct inode
*inode
, void *buf
, size_t buflen
)
3285 struct nfs4_exception exception
= { };
3288 ret
= __nfs4_get_acl_uncached(inode
, buf
, buflen
);
3291 ret
= nfs4_handle_exception(NFS_SERVER(inode
), ret
, &exception
);
3292 } while (exception
.retry
);
3296 static ssize_t
nfs4_proc_get_acl(struct inode
*inode
, void *buf
, size_t buflen
)
3298 struct nfs_server
*server
= NFS_SERVER(inode
);
3301 if (!nfs4_server_supports_acls(server
))
3303 ret
= nfs_revalidate_inode(server
, inode
);
3306 ret
= nfs4_read_cached_acl(inode
, buf
, buflen
);
3309 return nfs4_get_acl_uncached(inode
, buf
, buflen
);
3312 static int __nfs4_proc_set_acl(struct inode
*inode
, const void *buf
, size_t buflen
)
3314 struct nfs_server
*server
= NFS_SERVER(inode
);
3315 struct page
*pages
[NFS4ACL_MAXPAGES
];
3316 struct nfs_setaclargs arg
= {
3317 .fh
= NFS_FH(inode
),
3321 struct nfs_setaclres res
;
3322 struct rpc_message msg
= {
3323 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETACL
],
3329 if (!nfs4_server_supports_acls(server
))
3331 nfs_inode_return_delegation(inode
);
3332 buf_to_pages(buf
, buflen
, arg
.acl_pages
, &arg
.acl_pgbase
);
3333 ret
= nfs4_call_sync(server
, &msg
, &arg
, &res
, 1);
3334 nfs_access_zap_cache(inode
);
3335 nfs_zap_acl_cache(inode
);
3339 static int nfs4_proc_set_acl(struct inode
*inode
, const void *buf
, size_t buflen
)
3341 struct nfs4_exception exception
= { };
3344 err
= nfs4_handle_exception(NFS_SERVER(inode
),
3345 __nfs4_proc_set_acl(inode
, buf
, buflen
),
3347 } while (exception
.retry
);
3352 _nfs4_async_handle_error(struct rpc_task
*task
, const struct nfs_server
*server
, struct nfs_client
*clp
, struct nfs4_state
*state
)
3354 if (!clp
|| task
->tk_status
>= 0)
3356 switch(task
->tk_status
) {
3357 case -NFS4ERR_ADMIN_REVOKED
:
3358 case -NFS4ERR_BAD_STATEID
:
3359 case -NFS4ERR_OPENMODE
:
3362 nfs4_state_mark_reclaim_nograce(clp
, state
);
3363 case -NFS4ERR_STALE_CLIENTID
:
3364 case -NFS4ERR_STALE_STATEID
:
3365 case -NFS4ERR_EXPIRED
:
3366 rpc_sleep_on(&clp
->cl_rpcwaitq
, task
, NULL
);
3367 nfs4_schedule_state_recovery(clp
);
3368 if (test_bit(NFS4CLNT_MANAGER_RUNNING
, &clp
->cl_state
) == 0)
3369 rpc_wake_up_queued_task(&clp
->cl_rpcwaitq
, task
);
3370 task
->tk_status
= 0;
3372 #if defined(CONFIG_NFS_V4_1)
3373 case -NFS4ERR_BADSESSION
:
3374 case -NFS4ERR_BADSLOT
:
3375 case -NFS4ERR_BAD_HIGH_SLOT
:
3376 case -NFS4ERR_DEADSESSION
:
3377 case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION
:
3378 case -NFS4ERR_SEQ_FALSE_RETRY
:
3379 case -NFS4ERR_SEQ_MISORDERED
:
3380 dprintk("%s ERROR %d, Reset session\n", __func__
,
3382 set_bit(NFS4CLNT_SESSION_RESET
, &clp
->cl_state
);
3383 task
->tk_status
= 0;
3385 #endif /* CONFIG_NFS_V4_1 */
3386 case -NFS4ERR_DELAY
:
3388 nfs_inc_server_stats(server
, NFSIOS_DELAY
);
3389 case -NFS4ERR_GRACE
:
3390 rpc_delay(task
, NFS4_POLL_RETRY_MAX
);
3391 task
->tk_status
= 0;
3393 case -NFS4ERR_OLD_STATEID
:
3394 task
->tk_status
= 0;
3397 task
->tk_status
= nfs4_map_errors(task
->tk_status
);
3402 nfs4_async_handle_error(struct rpc_task
*task
, const struct nfs_server
*server
, struct nfs4_state
*state
)
3404 return _nfs4_async_handle_error(task
, server
, server
->nfs_client
, state
);
3407 int nfs4_proc_setclientid(struct nfs_client
*clp
, u32 program
, unsigned short port
, struct rpc_cred
*cred
)
3409 nfs4_verifier sc_verifier
;
3410 struct nfs4_setclientid setclientid
= {
3411 .sc_verifier
= &sc_verifier
,
3414 struct rpc_message msg
= {
3415 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETCLIENTID
],
3416 .rpc_argp
= &setclientid
,
3424 p
= (__be32
*)sc_verifier
.data
;
3425 *p
++ = htonl((u32
)clp
->cl_boot_time
.tv_sec
);
3426 *p
= htonl((u32
)clp
->cl_boot_time
.tv_nsec
);
3429 setclientid
.sc_name_len
= scnprintf(setclientid
.sc_name
,
3430 sizeof(setclientid
.sc_name
), "%s/%s %s %s %u",
3432 rpc_peeraddr2str(clp
->cl_rpcclient
,
3434 rpc_peeraddr2str(clp
->cl_rpcclient
,
3436 clp
->cl_rpcclient
->cl_auth
->au_ops
->au_name
,
3437 clp
->cl_id_uniquifier
);
3438 setclientid
.sc_netid_len
= scnprintf(setclientid
.sc_netid
,
3439 sizeof(setclientid
.sc_netid
),
3440 rpc_peeraddr2str(clp
->cl_rpcclient
,
3441 RPC_DISPLAY_NETID
));
3442 setclientid
.sc_uaddr_len
= scnprintf(setclientid
.sc_uaddr
,
3443 sizeof(setclientid
.sc_uaddr
), "%s.%u.%u",
3444 clp
->cl_ipaddr
, port
>> 8, port
& 255);
3446 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, 0);
3447 if (status
!= -NFS4ERR_CLID_INUSE
)
3452 ssleep(clp
->cl_lease_time
+ 1);
3454 if (++clp
->cl_id_uniquifier
== 0)
3460 static int _nfs4_proc_setclientid_confirm(struct nfs_client
*clp
, struct rpc_cred
*cred
)
3462 struct nfs_fsinfo fsinfo
;
3463 struct rpc_message msg
= {
3464 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETCLIENTID_CONFIRM
],
3466 .rpc_resp
= &fsinfo
,
3473 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, 0);
3475 spin_lock(&clp
->cl_lock
);
3476 clp
->cl_lease_time
= fsinfo
.lease_time
* HZ
;
3477 clp
->cl_last_renewal
= now
;
3478 spin_unlock(&clp
->cl_lock
);
3483 int nfs4_proc_setclientid_confirm(struct nfs_client
*clp
, struct rpc_cred
*cred
)
3488 err
= _nfs4_proc_setclientid_confirm(clp
, cred
);
3492 case -NFS4ERR_RESOURCE
:
3493 /* The IBM lawyers misread another document! */
3494 case -NFS4ERR_DELAY
:
3495 err
= nfs4_delay(clp
->cl_rpcclient
, &timeout
);
3501 struct nfs4_delegreturndata
{
3502 struct nfs4_delegreturnargs args
;
3503 struct nfs4_delegreturnres res
;
3505 nfs4_stateid stateid
;
3506 unsigned long timestamp
;
3507 struct nfs_fattr fattr
;
3511 static void nfs4_delegreturn_done(struct rpc_task
*task
, void *calldata
)
3513 struct nfs4_delegreturndata
*data
= calldata
;
3515 nfs4_sequence_done_free_slot(data
->res
.server
, &data
->res
.seq_res
,
3518 data
->rpc_status
= task
->tk_status
;
3519 if (data
->rpc_status
== 0)
3520 renew_lease(data
->res
.server
, data
->timestamp
);
3523 static void nfs4_delegreturn_release(void *calldata
)
3528 #if defined(CONFIG_NFS_V4_1)
3529 static void nfs4_delegreturn_prepare(struct rpc_task
*task
, void *data
)
3531 struct nfs4_delegreturndata
*d_data
;
3533 d_data
= (struct nfs4_delegreturndata
*)data
;
3535 if (nfs4_setup_sequence(d_data
->res
.server
->nfs_client
,
3536 &d_data
->args
.seq_args
,
3537 &d_data
->res
.seq_res
, 1, task
))
3539 rpc_call_start(task
);
3541 #endif /* CONFIG_NFS_V4_1 */
3543 static const struct rpc_call_ops nfs4_delegreturn_ops
= {
3544 #if defined(CONFIG_NFS_V4_1)
3545 .rpc_call_prepare
= nfs4_delegreturn_prepare
,
3546 #endif /* CONFIG_NFS_V4_1 */
3547 .rpc_call_done
= nfs4_delegreturn_done
,
3548 .rpc_release
= nfs4_delegreturn_release
,
3551 static int _nfs4_proc_delegreturn(struct inode
*inode
, struct rpc_cred
*cred
, const nfs4_stateid
*stateid
, int issync
)
3553 struct nfs4_delegreturndata
*data
;
3554 struct nfs_server
*server
= NFS_SERVER(inode
);
3555 struct rpc_task
*task
;
3556 struct rpc_message msg
= {
3557 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_DELEGRETURN
],
3560 struct rpc_task_setup task_setup_data
= {
3561 .rpc_client
= server
->client
,
3562 .rpc_message
= &msg
,
3563 .callback_ops
= &nfs4_delegreturn_ops
,
3564 .flags
= RPC_TASK_ASYNC
,
3568 data
= kzalloc(sizeof(*data
), GFP_KERNEL
);
3571 data
->args
.fhandle
= &data
->fh
;
3572 data
->args
.stateid
= &data
->stateid
;
3573 data
->args
.bitmask
= server
->attr_bitmask
;
3574 nfs_copy_fh(&data
->fh
, NFS_FH(inode
));
3575 memcpy(&data
->stateid
, stateid
, sizeof(data
->stateid
));
3576 data
->res
.fattr
= &data
->fattr
;
3577 data
->res
.server
= server
;
3578 data
->res
.seq_res
.sr_slotid
= NFS4_MAX_SLOT_TABLE
;
3579 nfs_fattr_init(data
->res
.fattr
);
3580 data
->timestamp
= jiffies
;
3581 data
->rpc_status
= 0;
3583 task_setup_data
.callback_data
= data
;
3584 msg
.rpc_argp
= &data
->args
,
3585 msg
.rpc_resp
= &data
->res
,
3586 task
= rpc_run_task(&task_setup_data
);
3588 return PTR_ERR(task
);
3591 status
= nfs4_wait_for_completion_rpc_task(task
);
3594 status
= data
->rpc_status
;
3597 nfs_refresh_inode(inode
, &data
->fattr
);
3603 int nfs4_proc_delegreturn(struct inode
*inode
, struct rpc_cred
*cred
, const nfs4_stateid
*stateid
, int issync
)
3605 struct nfs_server
*server
= NFS_SERVER(inode
);
3606 struct nfs4_exception exception
= { };
3609 err
= _nfs4_proc_delegreturn(inode
, cred
, stateid
, issync
);
3611 case -NFS4ERR_STALE_STATEID
:
3612 case -NFS4ERR_EXPIRED
:
3616 err
= nfs4_handle_exception(server
, err
, &exception
);
3617 } while (exception
.retry
);
3621 #define NFS4_LOCK_MINTIMEOUT (1 * HZ)
3622 #define NFS4_LOCK_MAXTIMEOUT (30 * HZ)
3625 * sleep, with exponential backoff, and retry the LOCK operation.
3627 static unsigned long
3628 nfs4_set_lock_task_retry(unsigned long timeout
)
3630 schedule_timeout_killable(timeout
);
3632 if (timeout
> NFS4_LOCK_MAXTIMEOUT
)
3633 return NFS4_LOCK_MAXTIMEOUT
;
3637 static int _nfs4_proc_getlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
3639 struct inode
*inode
= state
->inode
;
3640 struct nfs_server
*server
= NFS_SERVER(inode
);
3641 struct nfs_client
*clp
= server
->nfs_client
;
3642 struct nfs_lockt_args arg
= {
3643 .fh
= NFS_FH(inode
),
3646 struct nfs_lockt_res res
= {
3649 struct rpc_message msg
= {
3650 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOCKT
],
3653 .rpc_cred
= state
->owner
->so_cred
,
3655 struct nfs4_lock_state
*lsp
;
3658 arg
.lock_owner
.clientid
= clp
->cl_clientid
;
3659 status
= nfs4_set_lock_state(state
, request
);
3662 lsp
= request
->fl_u
.nfs4_fl
.owner
;
3663 arg
.lock_owner
.id
= lsp
->ls_id
.id
;
3664 status
= nfs4_call_sync(server
, &msg
, &arg
, &res
, 1);
3667 request
->fl_type
= F_UNLCK
;
3669 case -NFS4ERR_DENIED
:
3672 request
->fl_ops
->fl_release_private(request
);
3677 static int nfs4_proc_getlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
3679 struct nfs4_exception exception
= { };
3683 err
= nfs4_handle_exception(NFS_SERVER(state
->inode
),
3684 _nfs4_proc_getlk(state
, cmd
, request
),
3686 } while (exception
.retry
);
3690 static int do_vfs_lock(struct file
*file
, struct file_lock
*fl
)
3693 switch (fl
->fl_flags
& (FL_POSIX
|FL_FLOCK
)) {
3695 res
= posix_lock_file_wait(file
, fl
);
3698 res
= flock_lock_file_wait(file
, fl
);
3706 struct nfs4_unlockdata
{
3707 struct nfs_locku_args arg
;
3708 struct nfs_locku_res res
;
3709 struct nfs4_lock_state
*lsp
;
3710 struct nfs_open_context
*ctx
;
3711 struct file_lock fl
;
3712 const struct nfs_server
*server
;
3713 unsigned long timestamp
;
3716 static struct nfs4_unlockdata
*nfs4_alloc_unlockdata(struct file_lock
*fl
,
3717 struct nfs_open_context
*ctx
,
3718 struct nfs4_lock_state
*lsp
,
3719 struct nfs_seqid
*seqid
)
3721 struct nfs4_unlockdata
*p
;
3722 struct inode
*inode
= lsp
->ls_state
->inode
;
3724 p
= kzalloc(sizeof(*p
), GFP_KERNEL
);
3727 p
->arg
.fh
= NFS_FH(inode
);
3729 p
->arg
.seqid
= seqid
;
3730 p
->res
.seqid
= seqid
;
3731 p
->res
.seq_res
.sr_slotid
= NFS4_MAX_SLOT_TABLE
;
3732 p
->arg
.stateid
= &lsp
->ls_stateid
;
3734 atomic_inc(&lsp
->ls_count
);
3735 /* Ensure we don't close file until we're done freeing locks! */
3736 p
->ctx
= get_nfs_open_context(ctx
);
3737 memcpy(&p
->fl
, fl
, sizeof(p
->fl
));
3738 p
->server
= NFS_SERVER(inode
);
3742 static void nfs4_locku_release_calldata(void *data
)
3744 struct nfs4_unlockdata
*calldata
= data
;
3745 nfs_free_seqid(calldata
->arg
.seqid
);
3746 nfs4_put_lock_state(calldata
->lsp
);
3747 put_nfs_open_context(calldata
->ctx
);
3751 static void nfs4_locku_done(struct rpc_task
*task
, void *data
)
3753 struct nfs4_unlockdata
*calldata
= data
;
3755 nfs4_sequence_done(calldata
->server
, &calldata
->res
.seq_res
,
3757 if (RPC_ASSASSINATED(task
))
3759 switch (task
->tk_status
) {
3761 memcpy(calldata
->lsp
->ls_stateid
.data
,
3762 calldata
->res
.stateid
.data
,
3763 sizeof(calldata
->lsp
->ls_stateid
.data
));
3764 renew_lease(calldata
->server
, calldata
->timestamp
);
3766 case -NFS4ERR_BAD_STATEID
:
3767 case -NFS4ERR_OLD_STATEID
:
3768 case -NFS4ERR_STALE_STATEID
:
3769 case -NFS4ERR_EXPIRED
:
3772 if (nfs4_async_handle_error(task
, calldata
->server
, NULL
) == -EAGAIN
)
3773 nfs4_restart_rpc(task
,
3774 calldata
->server
->nfs_client
,
3775 &calldata
->res
.seq_res
);
3777 nfs4_sequence_free_slot(calldata
->server
->nfs_client
,
3778 &calldata
->res
.seq_res
);
3781 static void nfs4_locku_prepare(struct rpc_task
*task
, void *data
)
3783 struct nfs4_unlockdata
*calldata
= data
;
3785 if (nfs_wait_on_sequence(calldata
->arg
.seqid
, task
) != 0)
3787 if ((calldata
->lsp
->ls_flags
& NFS_LOCK_INITIALIZED
) == 0) {
3788 /* Note: exit _without_ running nfs4_locku_done */
3789 task
->tk_action
= NULL
;
3792 calldata
->timestamp
= jiffies
;
3793 if (nfs4_setup_sequence(calldata
->server
->nfs_client
,
3794 &calldata
->arg
.seq_args
,
3795 &calldata
->res
.seq_res
, 1, task
))
3797 rpc_call_start(task
);
3800 static const struct rpc_call_ops nfs4_locku_ops
= {
3801 .rpc_call_prepare
= nfs4_locku_prepare
,
3802 .rpc_call_done
= nfs4_locku_done
,
3803 .rpc_release
= nfs4_locku_release_calldata
,
3806 static struct rpc_task
*nfs4_do_unlck(struct file_lock
*fl
,
3807 struct nfs_open_context
*ctx
,
3808 struct nfs4_lock_state
*lsp
,
3809 struct nfs_seqid
*seqid
)
3811 struct nfs4_unlockdata
*data
;
3812 struct rpc_message msg
= {
3813 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOCKU
],
3814 .rpc_cred
= ctx
->cred
,
3816 struct rpc_task_setup task_setup_data
= {
3817 .rpc_client
= NFS_CLIENT(lsp
->ls_state
->inode
),
3818 .rpc_message
= &msg
,
3819 .callback_ops
= &nfs4_locku_ops
,
3820 .workqueue
= nfsiod_workqueue
,
3821 .flags
= RPC_TASK_ASYNC
,
3824 /* Ensure this is an unlock - when canceling a lock, the
3825 * canceled lock is passed in, and it won't be an unlock.
3827 fl
->fl_type
= F_UNLCK
;
3829 data
= nfs4_alloc_unlockdata(fl
, ctx
, lsp
, seqid
);
3831 nfs_free_seqid(seqid
);
3832 return ERR_PTR(-ENOMEM
);
3835 msg
.rpc_argp
= &data
->arg
,
3836 msg
.rpc_resp
= &data
->res
,
3837 task_setup_data
.callback_data
= data
;
3838 return rpc_run_task(&task_setup_data
);
3841 static int nfs4_proc_unlck(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
3843 struct nfs_inode
*nfsi
= NFS_I(state
->inode
);
3844 struct nfs_seqid
*seqid
;
3845 struct nfs4_lock_state
*lsp
;
3846 struct rpc_task
*task
;
3848 unsigned char fl_flags
= request
->fl_flags
;
3850 status
= nfs4_set_lock_state(state
, request
);
3851 /* Unlock _before_ we do the RPC call */
3852 request
->fl_flags
|= FL_EXISTS
;
3853 down_read(&nfsi
->rwsem
);
3854 if (do_vfs_lock(request
->fl_file
, request
) == -ENOENT
) {
3855 up_read(&nfsi
->rwsem
);
3858 up_read(&nfsi
->rwsem
);
3861 /* Is this a delegated lock? */
3862 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
))
3864 lsp
= request
->fl_u
.nfs4_fl
.owner
;
3865 seqid
= nfs_alloc_seqid(&lsp
->ls_seqid
);
3869 task
= nfs4_do_unlck(request
, nfs_file_open_context(request
->fl_file
), lsp
, seqid
);
3870 status
= PTR_ERR(task
);
3873 status
= nfs4_wait_for_completion_rpc_task(task
);
3876 request
->fl_flags
= fl_flags
;
3880 struct nfs4_lockdata
{
3881 struct nfs_lock_args arg
;
3882 struct nfs_lock_res res
;
3883 struct nfs4_lock_state
*lsp
;
3884 struct nfs_open_context
*ctx
;
3885 struct file_lock fl
;
3886 unsigned long timestamp
;
3889 struct nfs_server
*server
;
3892 static struct nfs4_lockdata
*nfs4_alloc_lockdata(struct file_lock
*fl
,
3893 struct nfs_open_context
*ctx
, struct nfs4_lock_state
*lsp
)
3895 struct nfs4_lockdata
*p
;
3896 struct inode
*inode
= lsp
->ls_state
->inode
;
3897 struct nfs_server
*server
= NFS_SERVER(inode
);
3899 p
= kzalloc(sizeof(*p
), GFP_KERNEL
);
3903 p
->arg
.fh
= NFS_FH(inode
);
3905 p
->arg
.open_seqid
= nfs_alloc_seqid(&lsp
->ls_state
->owner
->so_seqid
);
3906 if (p
->arg
.open_seqid
== NULL
)
3908 p
->arg
.lock_seqid
= nfs_alloc_seqid(&lsp
->ls_seqid
);
3909 if (p
->arg
.lock_seqid
== NULL
)
3910 goto out_free_seqid
;
3911 p
->arg
.lock_stateid
= &lsp
->ls_stateid
;
3912 p
->arg
.lock_owner
.clientid
= server
->nfs_client
->cl_clientid
;
3913 p
->arg
.lock_owner
.id
= lsp
->ls_id
.id
;
3914 p
->res
.lock_seqid
= p
->arg
.lock_seqid
;
3915 p
->res
.seq_res
.sr_slotid
= NFS4_MAX_SLOT_TABLE
;
3918 atomic_inc(&lsp
->ls_count
);
3919 p
->ctx
= get_nfs_open_context(ctx
);
3920 memcpy(&p
->fl
, fl
, sizeof(p
->fl
));
3923 nfs_free_seqid(p
->arg
.open_seqid
);
3929 static void nfs4_lock_prepare(struct rpc_task
*task
, void *calldata
)
3931 struct nfs4_lockdata
*data
= calldata
;
3932 struct nfs4_state
*state
= data
->lsp
->ls_state
;
3934 dprintk("%s: begin!\n", __func__
);
3935 if (nfs_wait_on_sequence(data
->arg
.lock_seqid
, task
) != 0)
3937 /* Do we need to do an open_to_lock_owner? */
3938 if (!(data
->arg
.lock_seqid
->sequence
->flags
& NFS_SEQID_CONFIRMED
)) {
3939 if (nfs_wait_on_sequence(data
->arg
.open_seqid
, task
) != 0)
3941 data
->arg
.open_stateid
= &state
->stateid
;
3942 data
->arg
.new_lock_owner
= 1;
3943 data
->res
.open_seqid
= data
->arg
.open_seqid
;
3945 data
->arg
.new_lock_owner
= 0;
3946 data
->timestamp
= jiffies
;
3947 if (nfs4_setup_sequence(data
->server
->nfs_client
, &data
->arg
.seq_args
,
3948 &data
->res
.seq_res
, 1, task
))
3950 rpc_call_start(task
);
3951 dprintk("%s: done!, ret = %d\n", __func__
, data
->rpc_status
);
3954 static void nfs4_lock_done(struct rpc_task
*task
, void *calldata
)
3956 struct nfs4_lockdata
*data
= calldata
;
3958 dprintk("%s: begin!\n", __func__
);
3960 nfs4_sequence_done_free_slot(data
->server
, &data
->res
.seq_res
,
3963 data
->rpc_status
= task
->tk_status
;
3964 if (RPC_ASSASSINATED(task
))
3966 if (data
->arg
.new_lock_owner
!= 0) {
3967 if (data
->rpc_status
== 0)
3968 nfs_confirm_seqid(&data
->lsp
->ls_seqid
, 0);
3972 if (data
->rpc_status
== 0) {
3973 memcpy(data
->lsp
->ls_stateid
.data
, data
->res
.stateid
.data
,
3974 sizeof(data
->lsp
->ls_stateid
.data
));
3975 data
->lsp
->ls_flags
|= NFS_LOCK_INITIALIZED
;
3976 renew_lease(NFS_SERVER(data
->ctx
->path
.dentry
->d_inode
), data
->timestamp
);
3979 dprintk("%s: done, ret = %d!\n", __func__
, data
->rpc_status
);
3982 static void nfs4_lock_release(void *calldata
)
3984 struct nfs4_lockdata
*data
= calldata
;
3986 dprintk("%s: begin!\n", __func__
);
3987 nfs_free_seqid(data
->arg
.open_seqid
);
3988 if (data
->cancelled
!= 0) {
3989 struct rpc_task
*task
;
3990 task
= nfs4_do_unlck(&data
->fl
, data
->ctx
, data
->lsp
,
3991 data
->arg
.lock_seqid
);
3994 dprintk("%s: cancelling lock!\n", __func__
);
3996 nfs_free_seqid(data
->arg
.lock_seqid
);
3997 nfs4_put_lock_state(data
->lsp
);
3998 put_nfs_open_context(data
->ctx
);
4000 dprintk("%s: done!\n", __func__
);
4003 static const struct rpc_call_ops nfs4_lock_ops
= {
4004 .rpc_call_prepare
= nfs4_lock_prepare
,
4005 .rpc_call_done
= nfs4_lock_done
,
4006 .rpc_release
= nfs4_lock_release
,
4009 static int _nfs4_do_setlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*fl
, int reclaim
)
4011 struct nfs4_lockdata
*data
;
4012 struct rpc_task
*task
;
4013 struct rpc_message msg
= {
4014 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOCK
],
4015 .rpc_cred
= state
->owner
->so_cred
,
4017 struct rpc_task_setup task_setup_data
= {
4018 .rpc_client
= NFS_CLIENT(state
->inode
),
4019 .rpc_message
= &msg
,
4020 .callback_ops
= &nfs4_lock_ops
,
4021 .workqueue
= nfsiod_workqueue
,
4022 .flags
= RPC_TASK_ASYNC
,
4026 dprintk("%s: begin!\n", __func__
);
4027 data
= nfs4_alloc_lockdata(fl
, nfs_file_open_context(fl
->fl_file
),
4028 fl
->fl_u
.nfs4_fl
.owner
);
4032 data
->arg
.block
= 1;
4034 data
->arg
.reclaim
= 1;
4035 msg
.rpc_argp
= &data
->arg
,
4036 msg
.rpc_resp
= &data
->res
,
4037 task_setup_data
.callback_data
= data
;
4038 task
= rpc_run_task(&task_setup_data
);
4040 return PTR_ERR(task
);
4041 ret
= nfs4_wait_for_completion_rpc_task(task
);
4043 ret
= data
->rpc_status
;
4045 data
->cancelled
= 1;
4047 dprintk("%s: done, ret = %d!\n", __func__
, ret
);
4051 static int nfs4_lock_reclaim(struct nfs4_state
*state
, struct file_lock
*request
)
4053 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
4054 struct nfs4_exception exception
= { };
4058 /* Cache the lock if possible... */
4059 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) != 0)
4061 err
= _nfs4_do_setlk(state
, F_SETLK
, request
, 1);
4062 if (err
!= -NFS4ERR_DELAY
)
4064 nfs4_handle_exception(server
, err
, &exception
);
4065 } while (exception
.retry
);
4069 static int nfs4_lock_expired(struct nfs4_state
*state
, struct file_lock
*request
)
4071 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
4072 struct nfs4_exception exception
= { };
4075 err
= nfs4_set_lock_state(state
, request
);
4079 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) != 0)
4081 err
= _nfs4_do_setlk(state
, F_SETLK
, request
, 0);
4085 case -NFS4ERR_GRACE
:
4086 case -NFS4ERR_DELAY
:
4087 nfs4_handle_exception(server
, err
, &exception
);
4090 } while (exception
.retry
);
4095 static int _nfs4_proc_setlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
4097 struct nfs_inode
*nfsi
= NFS_I(state
->inode
);
4098 unsigned char fl_flags
= request
->fl_flags
;
4101 /* Is this a delegated open? */
4102 status
= nfs4_set_lock_state(state
, request
);
4105 request
->fl_flags
|= FL_ACCESS
;
4106 status
= do_vfs_lock(request
->fl_file
, request
);
4109 down_read(&nfsi
->rwsem
);
4110 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
)) {
4111 /* Yes: cache locks! */
4112 /* ...but avoid races with delegation recall... */
4113 request
->fl_flags
= fl_flags
& ~FL_SLEEP
;
4114 status
= do_vfs_lock(request
->fl_file
, request
);
4117 status
= _nfs4_do_setlk(state
, cmd
, request
, 0);
4120 /* Note: we always want to sleep here! */
4121 request
->fl_flags
= fl_flags
| FL_SLEEP
;
4122 if (do_vfs_lock(request
->fl_file
, request
) < 0)
4123 printk(KERN_WARNING
"%s: VFS is out of sync with lock manager!\n", __func__
);
4125 up_read(&nfsi
->rwsem
);
4127 request
->fl_flags
= fl_flags
;
4131 static int nfs4_proc_setlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
4133 struct nfs4_exception exception
= { };
4137 err
= _nfs4_proc_setlk(state
, cmd
, request
);
4138 if (err
== -NFS4ERR_DENIED
)
4140 err
= nfs4_handle_exception(NFS_SERVER(state
->inode
),
4142 } while (exception
.retry
);
4147 nfs4_proc_lock(struct file
*filp
, int cmd
, struct file_lock
*request
)
4149 struct nfs_open_context
*ctx
;
4150 struct nfs4_state
*state
;
4151 unsigned long timeout
= NFS4_LOCK_MINTIMEOUT
;
4154 /* verify open state */
4155 ctx
= nfs_file_open_context(filp
);
4158 if (request
->fl_start
< 0 || request
->fl_end
< 0)
4161 if (IS_GETLK(cmd
)) {
4163 return nfs4_proc_getlk(state
, F_GETLK
, request
);
4167 if (!(IS_SETLK(cmd
) || IS_SETLKW(cmd
)))
4170 if (request
->fl_type
== F_UNLCK
) {
4172 return nfs4_proc_unlck(state
, cmd
, request
);
4179 status
= nfs4_proc_setlk(state
, cmd
, request
);
4180 if ((status
!= -EAGAIN
) || IS_SETLK(cmd
))
4182 timeout
= nfs4_set_lock_task_retry(timeout
);
4183 status
= -ERESTARTSYS
;
4186 } while(status
< 0);
4190 int nfs4_lock_delegation_recall(struct nfs4_state
*state
, struct file_lock
*fl
)
4192 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
4193 struct nfs4_exception exception
= { };
4196 err
= nfs4_set_lock_state(state
, fl
);
4200 err
= _nfs4_do_setlk(state
, F_SETLK
, fl
, 0);
4203 printk(KERN_ERR
"%s: unhandled error %d.\n",
4208 case -NFS4ERR_EXPIRED
:
4209 case -NFS4ERR_STALE_CLIENTID
:
4210 case -NFS4ERR_STALE_STATEID
:
4211 nfs4_schedule_state_recovery(server
->nfs_client
);
4215 * The show must go on: exit, but mark the
4216 * stateid as needing recovery.
4218 case -NFS4ERR_ADMIN_REVOKED
:
4219 case -NFS4ERR_BAD_STATEID
:
4220 case -NFS4ERR_OPENMODE
:
4221 nfs4_state_mark_reclaim_nograce(server
->nfs_client
, state
);
4225 case -NFS4ERR_DENIED
:
4226 /* kill_proc(fl->fl_pid, SIGLOST, 1); */
4229 case -NFS4ERR_DELAY
:
4232 err
= nfs4_handle_exception(server
, err
, &exception
);
4233 } while (exception
.retry
);
4238 #define XATTR_NAME_NFSV4_ACL "system.nfs4_acl"
4240 int nfs4_setxattr(struct dentry
*dentry
, const char *key
, const void *buf
,
4241 size_t buflen
, int flags
)
4243 struct inode
*inode
= dentry
->d_inode
;
4245 if (strcmp(key
, XATTR_NAME_NFSV4_ACL
) != 0)
4248 return nfs4_proc_set_acl(inode
, buf
, buflen
);
4251 /* The getxattr man page suggests returning -ENODATA for unknown attributes,
4252 * and that's what we'll do for e.g. user attributes that haven't been set.
4253 * But we'll follow ext2/ext3's lead by returning -EOPNOTSUPP for unsupported
4254 * attributes in kernel-managed attribute namespaces. */
4255 ssize_t
nfs4_getxattr(struct dentry
*dentry
, const char *key
, void *buf
,
4258 struct inode
*inode
= dentry
->d_inode
;
4260 if (strcmp(key
, XATTR_NAME_NFSV4_ACL
) != 0)
4263 return nfs4_proc_get_acl(inode
, buf
, buflen
);
4266 ssize_t
nfs4_listxattr(struct dentry
*dentry
, char *buf
, size_t buflen
)
4268 size_t len
= strlen(XATTR_NAME_NFSV4_ACL
) + 1;
4270 if (!nfs4_server_supports_acls(NFS_SERVER(dentry
->d_inode
)))
4272 if (buf
&& buflen
< len
)
4275 memcpy(buf
, XATTR_NAME_NFSV4_ACL
, len
);
4279 static void nfs_fixup_referral_attributes(struct nfs_fattr
*fattr
)
4281 if (!((fattr
->valid
& NFS_ATTR_FATTR_FILEID
) &&
4282 (fattr
->valid
& NFS_ATTR_FATTR_FSID
) &&
4283 (fattr
->valid
& NFS_ATTR_FATTR_V4_REFERRAL
)))
4286 fattr
->valid
|= NFS_ATTR_FATTR_TYPE
| NFS_ATTR_FATTR_MODE
|
4287 NFS_ATTR_FATTR_NLINK
;
4288 fattr
->mode
= S_IFDIR
| S_IRUGO
| S_IXUGO
;
4292 int nfs4_proc_fs_locations(struct inode
*dir
, const struct qstr
*name
,
4293 struct nfs4_fs_locations
*fs_locations
, struct page
*page
)
4295 struct nfs_server
*server
= NFS_SERVER(dir
);
4297 [0] = FATTR4_WORD0_FSID
| FATTR4_WORD0_FS_LOCATIONS
,
4298 [1] = FATTR4_WORD1_MOUNTED_ON_FILEID
,
4300 struct nfs4_fs_locations_arg args
= {
4301 .dir_fh
= NFS_FH(dir
),
4306 struct nfs4_fs_locations_res res
= {
4307 .fs_locations
= fs_locations
,
4309 struct rpc_message msg
= {
4310 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_FS_LOCATIONS
],
4316 dprintk("%s: start\n", __func__
);
4317 nfs_fattr_init(&fs_locations
->fattr
);
4318 fs_locations
->server
= server
;
4319 fs_locations
->nlocations
= 0;
4320 status
= nfs4_call_sync(server
, &msg
, &args
, &res
, 0);
4321 nfs_fixup_referral_attributes(&fs_locations
->fattr
);
4322 dprintk("%s: returned status = %d\n", __func__
, status
);
4326 #ifdef CONFIG_NFS_V4_1
4328 * nfs4_proc_exchange_id()
4330 * Since the clientid has expired, all compounds using sessions
4331 * associated with the stale clientid will be returning
4332 * NFS4ERR_BADSESSION in the sequence operation, and will therefore
4333 * be in some phase of session reset.
4335 int nfs4_proc_exchange_id(struct nfs_client
*clp
, struct rpc_cred
*cred
)
4337 nfs4_verifier verifier
;
4338 struct nfs41_exchange_id_args args
= {
4340 .flags
= clp
->cl_exchange_flags
,
4342 struct nfs41_exchange_id_res res
= {
4346 struct rpc_message msg
= {
4347 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_EXCHANGE_ID
],
4354 dprintk("--> %s\n", __func__
);
4355 BUG_ON(clp
== NULL
);
4357 p
= (u32
*)verifier
.data
;
4358 *p
++ = htonl((u32
)clp
->cl_boot_time
.tv_sec
);
4359 *p
= htonl((u32
)clp
->cl_boot_time
.tv_nsec
);
4360 args
.verifier
= &verifier
;
4363 args
.id_len
= scnprintf(args
.id
, sizeof(args
.id
),
4366 rpc_peeraddr2str(clp
->cl_rpcclient
,
4368 clp
->cl_id_uniquifier
);
4370 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, 0);
4372 if (status
!= NFS4ERR_CLID_INUSE
)
4378 if (++clp
->cl_id_uniquifier
== 0)
4382 dprintk("<-- %s status= %d\n", __func__
, status
);
4386 struct nfs4_get_lease_time_data
{
4387 struct nfs4_get_lease_time_args
*args
;
4388 struct nfs4_get_lease_time_res
*res
;
4389 struct nfs_client
*clp
;
4392 static void nfs4_get_lease_time_prepare(struct rpc_task
*task
,
4396 struct nfs4_get_lease_time_data
*data
=
4397 (struct nfs4_get_lease_time_data
*)calldata
;
4399 dprintk("--> %s\n", __func__
);
4400 /* just setup sequence, do not trigger session recovery
4401 since we're invoked within one */
4402 ret
= nfs41_setup_sequence(data
->clp
->cl_session
,
4403 &data
->args
->la_seq_args
,
4404 &data
->res
->lr_seq_res
, 0, task
);
4406 BUG_ON(ret
== -EAGAIN
);
4407 rpc_call_start(task
);
4408 dprintk("<-- %s\n", __func__
);
4412 * Called from nfs4_state_manager thread for session setup, so don't recover
4413 * from sequence operation or clientid errors.
4415 static void nfs4_get_lease_time_done(struct rpc_task
*task
, void *calldata
)
4417 struct nfs4_get_lease_time_data
*data
=
4418 (struct nfs4_get_lease_time_data
*)calldata
;
4420 dprintk("--> %s\n", __func__
);
4421 nfs41_sequence_done(data
->clp
, &data
->res
->lr_seq_res
, task
->tk_status
);
4422 switch (task
->tk_status
) {
4423 case -NFS4ERR_DELAY
:
4424 case -NFS4ERR_GRACE
:
4425 dprintk("%s Retry: tk_status %d\n", __func__
, task
->tk_status
);
4426 rpc_delay(task
, NFS4_POLL_RETRY_MIN
);
4427 task
->tk_status
= 0;
4428 rpc_restart_call(task
);
4431 nfs41_sequence_free_slot(data
->clp
, &data
->res
->lr_seq_res
);
4432 dprintk("<-- %s\n", __func__
);
4435 struct rpc_call_ops nfs4_get_lease_time_ops
= {
4436 .rpc_call_prepare
= nfs4_get_lease_time_prepare
,
4437 .rpc_call_done
= nfs4_get_lease_time_done
,
4440 int nfs4_proc_get_lease_time(struct nfs_client
*clp
, struct nfs_fsinfo
*fsinfo
)
4442 struct rpc_task
*task
;
4443 struct nfs4_get_lease_time_args args
;
4444 struct nfs4_get_lease_time_res res
= {
4445 .lr_fsinfo
= fsinfo
,
4447 struct nfs4_get_lease_time_data data
= {
4452 struct rpc_message msg
= {
4453 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GET_LEASE_TIME
],
4457 struct rpc_task_setup task_setup
= {
4458 .rpc_client
= clp
->cl_rpcclient
,
4459 .rpc_message
= &msg
,
4460 .callback_ops
= &nfs4_get_lease_time_ops
,
4461 .callback_data
= &data
4465 res
.lr_seq_res
.sr_slotid
= NFS4_MAX_SLOT_TABLE
;
4466 dprintk("--> %s\n", __func__
);
4467 task
= rpc_run_task(&task_setup
);
4470 status
= PTR_ERR(task
);
4472 status
= task
->tk_status
;
4475 dprintk("<-- %s return %d\n", __func__
, status
);
4481 * Reset a slot table
4483 static int nfs4_reset_slot_table(struct nfs4_slot_table
*tbl
, int max_slots
,
4484 int old_max_slots
, int ivalue
)
4489 dprintk("--> %s: max_reqs=%u, tbl %p\n", __func__
, max_slots
, tbl
);
4492 * Until we have dynamic slot table adjustment, insist
4493 * upon the same slot table size
4495 if (max_slots
!= old_max_slots
) {
4496 dprintk("%s reset slot table does't match old\n",
4498 ret
= -EINVAL
; /*XXX NFS4ERR_REQ_TOO_BIG ? */
4501 spin_lock(&tbl
->slot_tbl_lock
);
4502 for (i
= 0; i
< max_slots
; ++i
)
4503 tbl
->slots
[i
].seq_nr
= ivalue
;
4504 tbl
->highest_used_slotid
= -1;
4505 spin_unlock(&tbl
->slot_tbl_lock
);
4506 dprintk("%s: tbl=%p slots=%p max_slots=%d\n", __func__
,
4507 tbl
, tbl
->slots
, tbl
->max_slots
);
4509 dprintk("<-- %s: return %d\n", __func__
, ret
);
4514 * Reset the forechannel and backchannel slot tables
4516 static int nfs4_reset_slot_tables(struct nfs4_session
*session
)
4520 status
= nfs4_reset_slot_table(&session
->fc_slot_table
,
4521 session
->fc_attrs
.max_reqs
,
4522 session
->fc_slot_table
.max_slots
,
4527 status
= nfs4_reset_slot_table(&session
->bc_slot_table
,
4528 session
->bc_attrs
.max_reqs
,
4529 session
->bc_slot_table
.max_slots
,
4534 /* Destroy the slot table */
4535 static void nfs4_destroy_slot_tables(struct nfs4_session
*session
)
4537 if (session
->fc_slot_table
.slots
!= NULL
) {
4538 kfree(session
->fc_slot_table
.slots
);
4539 session
->fc_slot_table
.slots
= NULL
;
4541 if (session
->bc_slot_table
.slots
!= NULL
) {
4542 kfree(session
->bc_slot_table
.slots
);
4543 session
->bc_slot_table
.slots
= NULL
;
4549 * Initialize slot table
4551 static int nfs4_init_slot_table(struct nfs4_slot_table
*tbl
,
4552 int max_slots
, int ivalue
)
4555 struct nfs4_slot
*slot
;
4558 BUG_ON(max_slots
> NFS4_MAX_SLOT_TABLE
);
4560 dprintk("--> %s: max_reqs=%u\n", __func__
, max_slots
);
4562 slot
= kcalloc(max_slots
, sizeof(struct nfs4_slot
), GFP_KERNEL
);
4565 for (i
= 0; i
< max_slots
; ++i
)
4566 slot
[i
].seq_nr
= ivalue
;
4569 spin_lock(&tbl
->slot_tbl_lock
);
4570 if (tbl
->slots
!= NULL
) {
4571 spin_unlock(&tbl
->slot_tbl_lock
);
4572 dprintk("%s: slot table already initialized. tbl=%p slots=%p\n",
4573 __func__
, tbl
, tbl
->slots
);
4577 tbl
->max_slots
= max_slots
;
4579 tbl
->highest_used_slotid
= -1; /* no slot is currently used */
4580 spin_unlock(&tbl
->slot_tbl_lock
);
4581 dprintk("%s: tbl=%p slots=%p max_slots=%d\n", __func__
,
4582 tbl
, tbl
->slots
, tbl
->max_slots
);
4584 dprintk("<-- %s: return %d\n", __func__
, ret
);
4593 * Initialize the forechannel and backchannel tables
4595 static int nfs4_init_slot_tables(struct nfs4_session
*session
)
4599 status
= nfs4_init_slot_table(&session
->fc_slot_table
,
4600 session
->fc_attrs
.max_reqs
, 1);
4604 status
= nfs4_init_slot_table(&session
->bc_slot_table
,
4605 session
->bc_attrs
.max_reqs
, 0);
4607 nfs4_destroy_slot_tables(session
);
4612 struct nfs4_session
*nfs4_alloc_session(struct nfs_client
*clp
)
4614 struct nfs4_session
*session
;
4615 struct nfs4_slot_table
*tbl
;
4617 session
= kzalloc(sizeof(struct nfs4_session
), GFP_KERNEL
);
4622 * The create session reply races with the server back
4623 * channel probe. Mark the client NFS_CS_SESSION_INITING
4624 * so that the client back channel can find the
4627 clp
->cl_cons_state
= NFS_CS_SESSION_INITING
;
4629 tbl
= &session
->fc_slot_table
;
4630 spin_lock_init(&tbl
->slot_tbl_lock
);
4631 rpc_init_wait_queue(&tbl
->slot_tbl_waitq
, "ForeChannel Slot table");
4633 tbl
= &session
->bc_slot_table
;
4634 spin_lock_init(&tbl
->slot_tbl_lock
);
4635 rpc_init_wait_queue(&tbl
->slot_tbl_waitq
, "BackChannel Slot table");
4641 void nfs4_destroy_session(struct nfs4_session
*session
)
4643 nfs4_proc_destroy_session(session
);
4644 dprintk("%s Destroy backchannel for xprt %p\n",
4645 __func__
, session
->clp
->cl_rpcclient
->cl_xprt
);
4646 xprt_destroy_backchannel(session
->clp
->cl_rpcclient
->cl_xprt
,
4647 NFS41_BC_MIN_CALLBACKS
);
4648 nfs4_destroy_slot_tables(session
);
4653 * Initialize the values to be used by the client in CREATE_SESSION
4654 * If nfs4_init_session set the fore channel request and response sizes,
4657 * Set the back channel max_resp_sz_cached to zero to force the client to
4658 * always set csa_cachethis to FALSE because the current implementation
4659 * of the back channel DRC only supports caching the CB_SEQUENCE operation.
4661 static void nfs4_init_channel_attrs(struct nfs41_create_session_args
*args
)
4663 struct nfs4_session
*session
= args
->client
->cl_session
;
4664 unsigned int mxrqst_sz
= session
->fc_attrs
.max_rqst_sz
,
4665 mxresp_sz
= session
->fc_attrs
.max_resp_sz
;
4668 mxrqst_sz
= NFS_MAX_FILE_IO_SIZE
;
4670 mxresp_sz
= NFS_MAX_FILE_IO_SIZE
;
4671 /* Fore channel attributes */
4672 args
->fc_attrs
.headerpadsz
= 0;
4673 args
->fc_attrs
.max_rqst_sz
= mxrqst_sz
;
4674 args
->fc_attrs
.max_resp_sz
= mxresp_sz
;
4675 args
->fc_attrs
.max_resp_sz_cached
= mxresp_sz
;
4676 args
->fc_attrs
.max_ops
= NFS4_MAX_OPS
;
4677 args
->fc_attrs
.max_reqs
= session
->clp
->cl_rpcclient
->cl_xprt
->max_reqs
;
4679 dprintk("%s: Fore Channel : max_rqst_sz=%u max_resp_sz=%u "
4680 "max_resp_sz_cached=%u max_ops=%u max_reqs=%u\n",
4682 args
->fc_attrs
.max_rqst_sz
, args
->fc_attrs
.max_resp_sz
,
4683 args
->fc_attrs
.max_resp_sz_cached
, args
->fc_attrs
.max_ops
,
4684 args
->fc_attrs
.max_reqs
);
4686 /* Back channel attributes */
4687 args
->bc_attrs
.headerpadsz
= 0;
4688 args
->bc_attrs
.max_rqst_sz
= PAGE_SIZE
;
4689 args
->bc_attrs
.max_resp_sz
= PAGE_SIZE
;
4690 args
->bc_attrs
.max_resp_sz_cached
= 0;
4691 args
->bc_attrs
.max_ops
= NFS4_MAX_BACK_CHANNEL_OPS
;
4692 args
->bc_attrs
.max_reqs
= 1;
4694 dprintk("%s: Back Channel : max_rqst_sz=%u max_resp_sz=%u "
4695 "max_resp_sz_cached=%u max_ops=%u max_reqs=%u\n",
4697 args
->bc_attrs
.max_rqst_sz
, args
->bc_attrs
.max_resp_sz
,
4698 args
->bc_attrs
.max_resp_sz_cached
, args
->bc_attrs
.max_ops
,
4699 args
->bc_attrs
.max_reqs
);
4702 static int _verify_channel_attr(char *chan
, char *attr_name
, u32 sent
, u32 rcvd
)
4706 printk(KERN_WARNING
"%s: Session INVALID: %s channel %s increased. "
4707 "sent=%u rcvd=%u\n", __func__
, chan
, attr_name
, sent
, rcvd
);
4711 #define _verify_fore_channel_attr(_name_) \
4712 _verify_channel_attr("fore", #_name_, \
4713 args->fc_attrs._name_, \
4714 session->fc_attrs._name_)
4716 #define _verify_back_channel_attr(_name_) \
4717 _verify_channel_attr("back", #_name_, \
4718 args->bc_attrs._name_, \
4719 session->bc_attrs._name_)
4722 * The server is not allowed to increase the fore channel header pad size,
4723 * maximum response size, or maximum number of operations.
4725 * The back channel attributes are only negotiatied down: We send what the
4726 * (back channel) server insists upon.
4728 static int nfs4_verify_channel_attrs(struct nfs41_create_session_args
*args
,
4729 struct nfs4_session
*session
)
4733 ret
|= _verify_fore_channel_attr(headerpadsz
);
4734 ret
|= _verify_fore_channel_attr(max_resp_sz
);
4735 ret
|= _verify_fore_channel_attr(max_ops
);
4737 ret
|= _verify_back_channel_attr(headerpadsz
);
4738 ret
|= _verify_back_channel_attr(max_rqst_sz
);
4739 ret
|= _verify_back_channel_attr(max_resp_sz
);
4740 ret
|= _verify_back_channel_attr(max_resp_sz_cached
);
4741 ret
|= _verify_back_channel_attr(max_ops
);
4742 ret
|= _verify_back_channel_attr(max_reqs
);
4747 static int _nfs4_proc_create_session(struct nfs_client
*clp
)
4749 struct nfs4_session
*session
= clp
->cl_session
;
4750 struct nfs41_create_session_args args
= {
4752 .cb_program
= NFS4_CALLBACK
,
4754 struct nfs41_create_session_res res
= {
4757 struct rpc_message msg
= {
4758 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_CREATE_SESSION
],
4764 nfs4_init_channel_attrs(&args
);
4765 args
.flags
= (SESSION4_PERSIST
| SESSION4_BACK_CHAN
);
4767 status
= rpc_call_sync(session
->clp
->cl_rpcclient
, &msg
, 0);
4770 /* Verify the session's negotiated channel_attrs values */
4771 status
= nfs4_verify_channel_attrs(&args
, session
);
4773 /* Increment the clientid slot sequence id */
4781 * Issues a CREATE_SESSION operation to the server.
4782 * It is the responsibility of the caller to verify the session is
4783 * expired before calling this routine.
4785 int nfs4_proc_create_session(struct nfs_client
*clp
, int reset
)
4789 struct nfs_fsinfo fsinfo
;
4790 struct nfs4_session
*session
= clp
->cl_session
;
4792 dprintk("--> %s clp=%p session=%p\n", __func__
, clp
, session
);
4794 status
= _nfs4_proc_create_session(clp
);
4798 /* Init or reset the fore channel */
4800 status
= nfs4_reset_slot_tables(session
);
4802 status
= nfs4_init_slot_tables(session
);
4803 dprintk("fore channel slot table initialization returned %d\n", status
);
4807 ptr
= (unsigned *)&session
->sess_id
.data
[0];
4808 dprintk("%s client>seqid %d sessionid %u:%u:%u:%u\n", __func__
,
4809 clp
->cl_seqid
, ptr
[0], ptr
[1], ptr
[2], ptr
[3]);
4812 /* Lease time is aleady set */
4815 /* Get the lease time */
4816 status
= nfs4_proc_get_lease_time(clp
, &fsinfo
);
4818 /* Update lease time and schedule renewal */
4819 spin_lock(&clp
->cl_lock
);
4820 clp
->cl_lease_time
= fsinfo
.lease_time
* HZ
;
4821 clp
->cl_last_renewal
= jiffies
;
4822 clear_bit(NFS4CLNT_LEASE_EXPIRED
, &clp
->cl_state
);
4823 spin_unlock(&clp
->cl_lock
);
4825 nfs4_schedule_state_renewal(clp
);
4828 dprintk("<-- %s\n", __func__
);
4833 * Issue the over-the-wire RPC DESTROY_SESSION.
4834 * The caller must serialize access to this routine.
4836 int nfs4_proc_destroy_session(struct nfs4_session
*session
)
4839 struct rpc_message msg
;
4841 dprintk("--> nfs4_proc_destroy_session\n");
4843 /* session is still being setup */
4844 if (session
->clp
->cl_cons_state
!= NFS_CS_READY
)
4847 msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_DESTROY_SESSION
];
4848 msg
.rpc_argp
= session
;
4849 msg
.rpc_resp
= NULL
;
4850 msg
.rpc_cred
= NULL
;
4851 status
= rpc_call_sync(session
->clp
->cl_rpcclient
, &msg
, 0);
4855 "Got error %d from the server on DESTROY_SESSION. "
4856 "Session has been destroyed regardless...\n", status
);
4858 dprintk("<-- nfs4_proc_destroy_session\n");
4862 int nfs4_init_session(struct nfs_server
*server
)
4864 struct nfs_client
*clp
= server
->nfs_client
;
4867 if (!nfs4_has_session(clp
))
4870 clp
->cl_session
->fc_attrs
.max_rqst_sz
= server
->wsize
;
4871 clp
->cl_session
->fc_attrs
.max_resp_sz
= server
->rsize
;
4872 ret
= nfs4_recover_expired_lease(server
);
4874 ret
= nfs4_check_client_ready(clp
);
4879 * Renew the cl_session lease.
4881 static int nfs4_proc_sequence(struct nfs_client
*clp
, struct rpc_cred
*cred
)
4883 struct nfs4_sequence_args args
;
4884 struct nfs4_sequence_res res
;
4886 struct rpc_message msg
= {
4887 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SEQUENCE
],
4893 args
.sa_cache_this
= 0;
4895 return nfs4_call_sync_sequence(clp
, clp
->cl_rpcclient
, &msg
, &args
,
4899 void nfs41_sequence_call_done(struct rpc_task
*task
, void *data
)
4901 struct nfs_client
*clp
= (struct nfs_client
*)data
;
4903 nfs41_sequence_done(clp
, task
->tk_msg
.rpc_resp
, task
->tk_status
);
4905 if (task
->tk_status
< 0) {
4906 dprintk("%s ERROR %d\n", __func__
, task
->tk_status
);
4908 if (_nfs4_async_handle_error(task
, NULL
, clp
, NULL
)
4910 nfs4_restart_rpc(task
, clp
, task
->tk_msg
.rpc_resp
);
4914 nfs41_sequence_free_slot(clp
, task
->tk_msg
.rpc_resp
);
4915 dprintk("%s rpc_cred %p\n", __func__
, task
->tk_msg
.rpc_cred
);
4917 kfree(task
->tk_msg
.rpc_argp
);
4918 kfree(task
->tk_msg
.rpc_resp
);
4920 dprintk("<-- %s\n", __func__
);
4923 static void nfs41_sequence_prepare(struct rpc_task
*task
, void *data
)
4925 struct nfs_client
*clp
;
4926 struct nfs4_sequence_args
*args
;
4927 struct nfs4_sequence_res
*res
;
4929 clp
= (struct nfs_client
*)data
;
4930 args
= task
->tk_msg
.rpc_argp
;
4931 res
= task
->tk_msg
.rpc_resp
;
4933 if (nfs4_setup_sequence(clp
, args
, res
, 0, task
))
4935 rpc_call_start(task
);
4938 static const struct rpc_call_ops nfs41_sequence_ops
= {
4939 .rpc_call_done
= nfs41_sequence_call_done
,
4940 .rpc_call_prepare
= nfs41_sequence_prepare
,
4943 static int nfs41_proc_async_sequence(struct nfs_client
*clp
,
4944 struct rpc_cred
*cred
)
4946 struct nfs4_sequence_args
*args
;
4947 struct nfs4_sequence_res
*res
;
4948 struct rpc_message msg
= {
4949 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SEQUENCE
],
4953 args
= kzalloc(sizeof(*args
), GFP_KERNEL
);
4956 res
= kzalloc(sizeof(*res
), GFP_KERNEL
);
4961 res
->sr_slotid
= NFS4_MAX_SLOT_TABLE
;
4962 msg
.rpc_argp
= args
;
4965 return rpc_call_async(clp
->cl_rpcclient
, &msg
, RPC_TASK_SOFT
,
4966 &nfs41_sequence_ops
, (void *)clp
);
4969 #endif /* CONFIG_NFS_V4_1 */
4971 struct nfs4_state_recovery_ops nfs40_reboot_recovery_ops
= {
4972 .owner_flag_bit
= NFS_OWNER_RECLAIM_REBOOT
,
4973 .state_flag_bit
= NFS_STATE_RECLAIM_REBOOT
,
4974 .recover_open
= nfs4_open_reclaim
,
4975 .recover_lock
= nfs4_lock_reclaim
,
4976 .establish_clid
= nfs4_init_clientid
,
4977 .get_clid_cred
= nfs4_get_setclientid_cred
,
4980 #if defined(CONFIG_NFS_V4_1)
4981 struct nfs4_state_recovery_ops nfs41_reboot_recovery_ops
= {
4982 .owner_flag_bit
= NFS_OWNER_RECLAIM_REBOOT
,
4983 .state_flag_bit
= NFS_STATE_RECLAIM_REBOOT
,
4984 .recover_open
= nfs4_open_reclaim
,
4985 .recover_lock
= nfs4_lock_reclaim
,
4986 .establish_clid
= nfs41_init_clientid
,
4987 .get_clid_cred
= nfs4_get_exchange_id_cred
,
4989 #endif /* CONFIG_NFS_V4_1 */
4991 struct nfs4_state_recovery_ops nfs40_nograce_recovery_ops
= {
4992 .owner_flag_bit
= NFS_OWNER_RECLAIM_NOGRACE
,
4993 .state_flag_bit
= NFS_STATE_RECLAIM_NOGRACE
,
4994 .recover_open
= nfs4_open_expired
,
4995 .recover_lock
= nfs4_lock_expired
,
4996 .establish_clid
= nfs4_init_clientid
,
4997 .get_clid_cred
= nfs4_get_setclientid_cred
,
5000 #if defined(CONFIG_NFS_V4_1)
5001 struct nfs4_state_recovery_ops nfs41_nograce_recovery_ops
= {
5002 .owner_flag_bit
= NFS_OWNER_RECLAIM_NOGRACE
,
5003 .state_flag_bit
= NFS_STATE_RECLAIM_NOGRACE
,
5004 .recover_open
= nfs4_open_expired
,
5005 .recover_lock
= nfs4_lock_expired
,
5006 .establish_clid
= nfs41_init_clientid
,
5007 .get_clid_cred
= nfs4_get_exchange_id_cred
,
5009 #endif /* CONFIG_NFS_V4_1 */
5011 struct nfs4_state_maintenance_ops nfs40_state_renewal_ops
= {
5012 .sched_state_renewal
= nfs4_proc_async_renew
,
5013 .get_state_renewal_cred_locked
= nfs4_get_renew_cred_locked
,
5014 .renew_lease
= nfs4_proc_renew
,
5017 #if defined(CONFIG_NFS_V4_1)
5018 struct nfs4_state_maintenance_ops nfs41_state_renewal_ops
= {
5019 .sched_state_renewal
= nfs41_proc_async_sequence
,
5020 .get_state_renewal_cred_locked
= nfs4_get_machine_cred_locked
,
5021 .renew_lease
= nfs4_proc_sequence
,
5026 * Per minor version reboot and network partition recovery ops
5029 struct nfs4_state_recovery_ops
*nfs4_reboot_recovery_ops
[] = {
5030 &nfs40_reboot_recovery_ops
,
5031 #if defined(CONFIG_NFS_V4_1)
5032 &nfs41_reboot_recovery_ops
,
5036 struct nfs4_state_recovery_ops
*nfs4_nograce_recovery_ops
[] = {
5037 &nfs40_nograce_recovery_ops
,
5038 #if defined(CONFIG_NFS_V4_1)
5039 &nfs41_nograce_recovery_ops
,
5043 struct nfs4_state_maintenance_ops
*nfs4_state_renewal_ops
[] = {
5044 &nfs40_state_renewal_ops
,
5045 #if defined(CONFIG_NFS_V4_1)
5046 &nfs41_state_renewal_ops
,
5050 static const struct inode_operations nfs4_file_inode_operations
= {
5051 .permission
= nfs_permission
,
5052 .getattr
= nfs_getattr
,
5053 .setattr
= nfs_setattr
,
5054 .getxattr
= nfs4_getxattr
,
5055 .setxattr
= nfs4_setxattr
,
5056 .listxattr
= nfs4_listxattr
,
5059 const struct nfs_rpc_ops nfs_v4_clientops
= {
5060 .version
= 4, /* protocol version */
5061 .dentry_ops
= &nfs4_dentry_operations
,
5062 .dir_inode_ops
= &nfs4_dir_inode_operations
,
5063 .file_inode_ops
= &nfs4_file_inode_operations
,
5064 .getroot
= nfs4_proc_get_root
,
5065 .getattr
= nfs4_proc_getattr
,
5066 .setattr
= nfs4_proc_setattr
,
5067 .lookupfh
= nfs4_proc_lookupfh
,
5068 .lookup
= nfs4_proc_lookup
,
5069 .access
= nfs4_proc_access
,
5070 .readlink
= nfs4_proc_readlink
,
5071 .create
= nfs4_proc_create
,
5072 .remove
= nfs4_proc_remove
,
5073 .unlink_setup
= nfs4_proc_unlink_setup
,
5074 .unlink_done
= nfs4_proc_unlink_done
,
5075 .rename
= nfs4_proc_rename
,
5076 .link
= nfs4_proc_link
,
5077 .symlink
= nfs4_proc_symlink
,
5078 .mkdir
= nfs4_proc_mkdir
,
5079 .rmdir
= nfs4_proc_remove
,
5080 .readdir
= nfs4_proc_readdir
,
5081 .mknod
= nfs4_proc_mknod
,
5082 .statfs
= nfs4_proc_statfs
,
5083 .fsinfo
= nfs4_proc_fsinfo
,
5084 .pathconf
= nfs4_proc_pathconf
,
5085 .set_capabilities
= nfs4_server_capabilities
,
5086 .decode_dirent
= nfs4_decode_dirent
,
5087 .read_setup
= nfs4_proc_read_setup
,
5088 .read_done
= nfs4_read_done
,
5089 .write_setup
= nfs4_proc_write_setup
,
5090 .write_done
= nfs4_write_done
,
5091 .commit_setup
= nfs4_proc_commit_setup
,
5092 .commit_done
= nfs4_commit_done
,
5093 .lock
= nfs4_proc_lock
,
5094 .clear_acl_cache
= nfs4_zap_acl_attr
,
5095 .close_context
= nfs4_close_context
,