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/slab.h>
43 #include <linux/sunrpc/clnt.h>
44 #include <linux/nfs.h>
45 #include <linux/nfs4.h>
46 #include <linux/nfs_fs.h>
47 #include <linux/nfs_page.h>
48 #include <linux/namei.h>
49 #include <linux/mount.h>
50 #include <linux/module.h>
51 #include <linux/sunrpc/bc_xprt.h>
54 #include "delegation.h"
59 #define NFSDBG_FACILITY NFSDBG_PROC
61 #define NFS4_POLL_RETRY_MIN (HZ/10)
62 #define NFS4_POLL_RETRY_MAX (15*HZ)
64 #define NFS4_MAX_LOOP_ON_RECOVER (10)
67 static int _nfs4_proc_open(struct nfs4_opendata
*data
);
68 static int _nfs4_recover_proc_open(struct nfs4_opendata
*data
);
69 static int nfs4_do_fsinfo(struct nfs_server
*, struct nfs_fh
*, struct nfs_fsinfo
*);
70 static int nfs4_async_handle_error(struct rpc_task
*, const struct nfs_server
*, struct nfs4_state
*);
71 static int _nfs4_proc_lookup(struct inode
*dir
, const struct qstr
*name
, struct nfs_fh
*fhandle
, struct nfs_fattr
*fattr
);
72 static int _nfs4_proc_getattr(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fattr
*fattr
);
73 static int nfs4_do_setattr(struct inode
*inode
, struct rpc_cred
*cred
,
74 struct nfs_fattr
*fattr
, struct iattr
*sattr
,
75 struct nfs4_state
*state
);
77 /* Prevent leaks of NFSv4 errors into userland */
78 static int nfs4_map_errors(int err
)
83 case -NFS4ERR_RESOURCE
:
86 dprintk("%s could not handle NFSv4 error %d\n",
94 * This is our standard bitmap for GETATTR requests.
96 const u32 nfs4_fattr_bitmap
[2] = {
101 | FATTR4_WORD0_FILEID
,
103 | FATTR4_WORD1_NUMLINKS
105 | FATTR4_WORD1_OWNER_GROUP
106 | FATTR4_WORD1_RAWDEV
107 | FATTR4_WORD1_SPACE_USED
108 | FATTR4_WORD1_TIME_ACCESS
109 | FATTR4_WORD1_TIME_METADATA
110 | FATTR4_WORD1_TIME_MODIFY
113 const u32 nfs4_statfs_bitmap
[2] = {
114 FATTR4_WORD0_FILES_AVAIL
115 | FATTR4_WORD0_FILES_FREE
116 | FATTR4_WORD0_FILES_TOTAL
,
117 FATTR4_WORD1_SPACE_AVAIL
118 | FATTR4_WORD1_SPACE_FREE
119 | FATTR4_WORD1_SPACE_TOTAL
122 const u32 nfs4_pathconf_bitmap
[2] = {
124 | FATTR4_WORD0_MAXNAME
,
128 const u32 nfs4_fsinfo_bitmap
[2] = { FATTR4_WORD0_MAXFILESIZE
129 | FATTR4_WORD0_MAXREAD
130 | FATTR4_WORD0_MAXWRITE
131 | FATTR4_WORD0_LEASE_TIME
,
135 const u32 nfs4_fs_locations_bitmap
[2] = {
137 | FATTR4_WORD0_CHANGE
140 | FATTR4_WORD0_FILEID
141 | FATTR4_WORD0_FS_LOCATIONS
,
143 | FATTR4_WORD1_NUMLINKS
145 | FATTR4_WORD1_OWNER_GROUP
146 | FATTR4_WORD1_RAWDEV
147 | FATTR4_WORD1_SPACE_USED
148 | FATTR4_WORD1_TIME_ACCESS
149 | FATTR4_WORD1_TIME_METADATA
150 | FATTR4_WORD1_TIME_MODIFY
151 | FATTR4_WORD1_MOUNTED_ON_FILEID
154 static void nfs4_setup_readdir(u64 cookie
, __be32
*verifier
, struct dentry
*dentry
,
155 struct nfs4_readdir_arg
*readdir
)
159 BUG_ON(readdir
->count
< 80);
161 readdir
->cookie
= cookie
;
162 memcpy(&readdir
->verifier
, verifier
, sizeof(readdir
->verifier
));
167 memset(&readdir
->verifier
, 0, sizeof(readdir
->verifier
));
172 * NFSv4 servers do not return entries for '.' and '..'
173 * Therefore, we fake these entries here. We let '.'
174 * have cookie 0 and '..' have cookie 1. Note that
175 * when talking to the server, we always send cookie 0
178 start
= p
= kmap_atomic(*readdir
->pages
, KM_USER0
);
181 *p
++ = xdr_one
; /* next */
182 *p
++ = xdr_zero
; /* cookie, first word */
183 *p
++ = xdr_one
; /* cookie, second word */
184 *p
++ = xdr_one
; /* entry len */
185 memcpy(p
, ".\0\0\0", 4); /* entry */
187 *p
++ = xdr_one
; /* bitmap length */
188 *p
++ = htonl(FATTR4_WORD0_FILEID
); /* bitmap */
189 *p
++ = htonl(8); /* attribute buffer length */
190 p
= xdr_encode_hyper(p
, NFS_FILEID(dentry
->d_inode
));
193 *p
++ = xdr_one
; /* next */
194 *p
++ = xdr_zero
; /* cookie, first word */
195 *p
++ = xdr_two
; /* cookie, second word */
196 *p
++ = xdr_two
; /* entry len */
197 memcpy(p
, "..\0\0", 4); /* entry */
199 *p
++ = xdr_one
; /* bitmap length */
200 *p
++ = htonl(FATTR4_WORD0_FILEID
); /* bitmap */
201 *p
++ = htonl(8); /* attribute buffer length */
202 p
= xdr_encode_hyper(p
, NFS_FILEID(dentry
->d_parent
->d_inode
));
204 readdir
->pgbase
= (char *)p
- (char *)start
;
205 readdir
->count
-= readdir
->pgbase
;
206 kunmap_atomic(start
, KM_USER0
);
209 static int nfs4_wait_clnt_recover(struct nfs_client
*clp
)
215 res
= wait_on_bit(&clp
->cl_state
, NFS4CLNT_MANAGER_RUNNING
,
216 nfs_wait_bit_killable
, TASK_KILLABLE
);
220 static int nfs4_delay(struct rpc_clnt
*clnt
, long *timeout
)
227 *timeout
= NFS4_POLL_RETRY_MIN
;
228 if (*timeout
> NFS4_POLL_RETRY_MAX
)
229 *timeout
= NFS4_POLL_RETRY_MAX
;
230 schedule_timeout_killable(*timeout
);
231 if (fatal_signal_pending(current
))
237 /* This is the error handling routine for processes that are allowed
240 static int nfs4_handle_exception(const struct nfs_server
*server
, int errorcode
, struct nfs4_exception
*exception
)
242 struct nfs_client
*clp
= server
->nfs_client
;
243 struct nfs4_state
*state
= exception
->state
;
246 exception
->retry
= 0;
250 case -NFS4ERR_ADMIN_REVOKED
:
251 case -NFS4ERR_BAD_STATEID
:
252 case -NFS4ERR_OPENMODE
:
255 nfs4_state_mark_reclaim_nograce(clp
, state
);
256 goto do_state_recovery
;
257 case -NFS4ERR_STALE_STATEID
:
258 case -NFS4ERR_STALE_CLIENTID
:
259 case -NFS4ERR_EXPIRED
:
260 goto do_state_recovery
;
261 #if defined(CONFIG_NFS_V4_1)
262 case -NFS4ERR_BADSESSION
:
263 case -NFS4ERR_BADSLOT
:
264 case -NFS4ERR_BAD_HIGH_SLOT
:
265 case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION
:
266 case -NFS4ERR_DEADSESSION
:
267 case -NFS4ERR_SEQ_FALSE_RETRY
:
268 case -NFS4ERR_SEQ_MISORDERED
:
269 dprintk("%s ERROR: %d Reset session\n", __func__
,
271 nfs4_schedule_state_recovery(clp
);
272 exception
->retry
= 1;
274 #endif /* defined(CONFIG_NFS_V4_1) */
275 case -NFS4ERR_FILE_OPEN
:
276 if (exception
->timeout
> HZ
) {
277 /* We have retried a decent amount, time to
286 ret
= nfs4_delay(server
->client
, &exception
->timeout
);
289 case -NFS4ERR_OLD_STATEID
:
290 exception
->retry
= 1;
292 /* We failed to handle the error */
293 return nfs4_map_errors(ret
);
295 nfs4_schedule_state_recovery(clp
);
296 ret
= nfs4_wait_clnt_recover(clp
);
298 exception
->retry
= 1;
303 static void do_renew_lease(struct nfs_client
*clp
, unsigned long timestamp
)
305 spin_lock(&clp
->cl_lock
);
306 if (time_before(clp
->cl_last_renewal
,timestamp
))
307 clp
->cl_last_renewal
= timestamp
;
308 spin_unlock(&clp
->cl_lock
);
311 static void renew_lease(const struct nfs_server
*server
, unsigned long timestamp
)
313 do_renew_lease(server
->nfs_client
, timestamp
);
316 #if defined(CONFIG_NFS_V4_1)
319 * nfs4_free_slot - free a slot and efficiently update slot table.
321 * freeing a slot is trivially done by clearing its respective bit
323 * If the freed slotid equals highest_used_slotid we want to update it
324 * so that the server would be able to size down the slot table if needed,
325 * otherwise we know that the highest_used_slotid is still in use.
326 * When updating highest_used_slotid there may be "holes" in the bitmap
327 * so we need to scan down from highest_used_slotid to 0 looking for the now
328 * highest slotid in use.
329 * If none found, highest_used_slotid is set to -1.
331 * Must be called while holding tbl->slot_tbl_lock
334 nfs4_free_slot(struct nfs4_slot_table
*tbl
, struct nfs4_slot
*free_slot
)
336 int free_slotid
= free_slot
- tbl
->slots
;
337 int slotid
= free_slotid
;
339 BUG_ON(slotid
< 0 || slotid
>= NFS4_MAX_SLOT_TABLE
);
340 /* clear used bit in bitmap */
341 __clear_bit(slotid
, tbl
->used_slots
);
343 /* update highest_used_slotid when it is freed */
344 if (slotid
== tbl
->highest_used_slotid
) {
345 slotid
= find_last_bit(tbl
->used_slots
, tbl
->max_slots
);
346 if (slotid
< tbl
->max_slots
)
347 tbl
->highest_used_slotid
= slotid
;
349 tbl
->highest_used_slotid
= -1;
351 dprintk("%s: free_slotid %u highest_used_slotid %d\n", __func__
,
352 free_slotid
, tbl
->highest_used_slotid
);
356 * Signal state manager thread if session is drained
358 static void nfs41_check_drain_session_complete(struct nfs4_session
*ses
)
360 struct rpc_task
*task
;
362 if (!test_bit(NFS4_SESSION_DRAINING
, &ses
->session_state
)) {
363 task
= rpc_wake_up_next(&ses
->fc_slot_table
.slot_tbl_waitq
);
365 rpc_task_set_priority(task
, RPC_PRIORITY_PRIVILEGED
);
369 if (ses
->fc_slot_table
.highest_used_slotid
!= -1)
372 dprintk("%s COMPLETE: Session Drained\n", __func__
);
373 complete(&ses
->complete
);
376 static void nfs41_sequence_free_slot(struct nfs4_sequence_res
*res
)
378 struct nfs4_slot_table
*tbl
;
380 tbl
= &res
->sr_session
->fc_slot_table
;
382 /* just wake up the next guy waiting since
383 * we may have not consumed a slot after all */
384 dprintk("%s: No slot\n", __func__
);
388 spin_lock(&tbl
->slot_tbl_lock
);
389 nfs4_free_slot(tbl
, res
->sr_slot
);
390 nfs41_check_drain_session_complete(res
->sr_session
);
391 spin_unlock(&tbl
->slot_tbl_lock
);
395 static int nfs41_sequence_done(struct rpc_task
*task
, struct nfs4_sequence_res
*res
)
397 unsigned long timestamp
;
398 struct nfs_client
*clp
;
401 * sr_status remains 1 if an RPC level error occurred. The server
402 * may or may not have processed the sequence operation..
403 * Proceed as if the server received and processed the sequence
406 if (res
->sr_status
== 1)
407 res
->sr_status
= NFS_OK
;
409 /* -ERESTARTSYS can result in skipping nfs41_sequence_setup */
413 /* Check the SEQUENCE operation status */
414 switch (res
->sr_status
) {
416 /* Update the slot's sequence and clientid lease timer */
417 ++res
->sr_slot
->seq_nr
;
418 timestamp
= res
->sr_renewal_time
;
419 clp
= res
->sr_session
->clp
;
420 do_renew_lease(clp
, timestamp
);
421 /* Check sequence flags */
422 if (atomic_read(&clp
->cl_count
) > 1)
423 nfs41_handle_sequence_flag_errors(clp
, res
->sr_status_flags
);
426 /* The server detected a resend of the RPC call and
427 * returned NFS4ERR_DELAY as per Section 2.10.6.2
430 dprintk("%s: slot=%ld seq=%d: Operation in progress\n",
432 res
->sr_slot
- res
->sr_session
->fc_slot_table
.slots
,
433 res
->sr_slot
->seq_nr
);
436 /* Just update the slot sequence no. */
437 ++res
->sr_slot
->seq_nr
;
440 /* The session may be reset by one of the error handlers. */
441 dprintk("%s: Error %d free the slot \n", __func__
, res
->sr_status
);
442 nfs41_sequence_free_slot(res
);
445 if (!rpc_restart_call(task
))
447 rpc_delay(task
, NFS4_POLL_RETRY_MAX
);
451 static int nfs4_sequence_done(struct rpc_task
*task
,
452 struct nfs4_sequence_res
*res
)
454 if (res
->sr_session
== NULL
)
456 return nfs41_sequence_done(task
, res
);
460 * nfs4_find_slot - efficiently look for a free slot
462 * nfs4_find_slot looks for an unset bit in the used_slots bitmap.
463 * If found, we mark the slot as used, update the highest_used_slotid,
464 * and respectively set up the sequence operation args.
465 * The slot number is returned if found, or NFS4_MAX_SLOT_TABLE otherwise.
467 * Note: must be called with under the slot_tbl_lock.
470 nfs4_find_slot(struct nfs4_slot_table
*tbl
)
473 u8 ret_id
= NFS4_MAX_SLOT_TABLE
;
474 BUILD_BUG_ON((u8
)NFS4_MAX_SLOT_TABLE
!= (int)NFS4_MAX_SLOT_TABLE
);
476 dprintk("--> %s used_slots=%04lx highest_used=%d max_slots=%d\n",
477 __func__
, tbl
->used_slots
[0], tbl
->highest_used_slotid
,
479 slotid
= find_first_zero_bit(tbl
->used_slots
, tbl
->max_slots
);
480 if (slotid
>= tbl
->max_slots
)
482 __set_bit(slotid
, tbl
->used_slots
);
483 if (slotid
> tbl
->highest_used_slotid
)
484 tbl
->highest_used_slotid
= slotid
;
487 dprintk("<-- %s used_slots=%04lx highest_used=%d slotid=%d \n",
488 __func__
, tbl
->used_slots
[0], tbl
->highest_used_slotid
, ret_id
);
492 static int nfs41_setup_sequence(struct nfs4_session
*session
,
493 struct nfs4_sequence_args
*args
,
494 struct nfs4_sequence_res
*res
,
496 struct rpc_task
*task
)
498 struct nfs4_slot
*slot
;
499 struct nfs4_slot_table
*tbl
;
502 dprintk("--> %s\n", __func__
);
503 /* slot already allocated? */
504 if (res
->sr_slot
!= NULL
)
507 tbl
= &session
->fc_slot_table
;
509 spin_lock(&tbl
->slot_tbl_lock
);
510 if (test_bit(NFS4_SESSION_DRAINING
, &session
->session_state
) &&
511 !rpc_task_has_priority(task
, RPC_PRIORITY_PRIVILEGED
)) {
513 * The state manager will wait until the slot table is empty.
514 * Schedule the reset thread
516 rpc_sleep_on(&tbl
->slot_tbl_waitq
, task
, NULL
);
517 spin_unlock(&tbl
->slot_tbl_lock
);
518 dprintk("%s Schedule Session Reset\n", __func__
);
522 if (!rpc_queue_empty(&tbl
->slot_tbl_waitq
) &&
523 !rpc_task_has_priority(task
, RPC_PRIORITY_PRIVILEGED
)) {
524 rpc_sleep_on(&tbl
->slot_tbl_waitq
, task
, NULL
);
525 spin_unlock(&tbl
->slot_tbl_lock
);
526 dprintk("%s enforce FIFO order\n", __func__
);
530 slotid
= nfs4_find_slot(tbl
);
531 if (slotid
== NFS4_MAX_SLOT_TABLE
) {
532 rpc_sleep_on(&tbl
->slot_tbl_waitq
, task
, NULL
);
533 spin_unlock(&tbl
->slot_tbl_lock
);
534 dprintk("<-- %s: no free slots\n", __func__
);
537 spin_unlock(&tbl
->slot_tbl_lock
);
539 rpc_task_set_priority(task
, RPC_PRIORITY_NORMAL
);
540 slot
= tbl
->slots
+ slotid
;
541 args
->sa_session
= session
;
542 args
->sa_slotid
= slotid
;
543 args
->sa_cache_this
= cache_reply
;
545 dprintk("<-- %s slotid=%d seqid=%d\n", __func__
, slotid
, slot
->seq_nr
);
547 res
->sr_session
= session
;
549 res
->sr_renewal_time
= jiffies
;
550 res
->sr_status_flags
= 0;
552 * sr_status is only set in decode_sequence, and so will remain
553 * set to 1 if an rpc level failure occurs.
559 int nfs4_setup_sequence(const struct nfs_server
*server
,
560 struct nfs4_sequence_args
*args
,
561 struct nfs4_sequence_res
*res
,
563 struct rpc_task
*task
)
565 struct nfs4_session
*session
= nfs4_get_session(server
);
568 if (session
== NULL
) {
569 args
->sa_session
= NULL
;
570 res
->sr_session
= NULL
;
574 dprintk("--> %s clp %p session %p sr_slot %ld\n",
575 __func__
, session
->clp
, session
, res
->sr_slot
?
576 res
->sr_slot
- session
->fc_slot_table
.slots
: -1);
578 ret
= nfs41_setup_sequence(session
, args
, res
, cache_reply
,
581 dprintk("<-- %s status=%d\n", __func__
, ret
);
585 struct nfs41_call_sync_data
{
586 const struct nfs_server
*seq_server
;
587 struct nfs4_sequence_args
*seq_args
;
588 struct nfs4_sequence_res
*seq_res
;
592 static void nfs41_call_sync_prepare(struct rpc_task
*task
, void *calldata
)
594 struct nfs41_call_sync_data
*data
= calldata
;
596 dprintk("--> %s data->seq_server %p\n", __func__
, data
->seq_server
);
598 if (nfs4_setup_sequence(data
->seq_server
, data
->seq_args
,
599 data
->seq_res
, data
->cache_reply
, task
))
601 rpc_call_start(task
);
604 static void nfs41_call_priv_sync_prepare(struct rpc_task
*task
, void *calldata
)
606 rpc_task_set_priority(task
, RPC_PRIORITY_PRIVILEGED
);
607 nfs41_call_sync_prepare(task
, calldata
);
610 static void nfs41_call_sync_done(struct rpc_task
*task
, void *calldata
)
612 struct nfs41_call_sync_data
*data
= calldata
;
614 nfs41_sequence_done(task
, data
->seq_res
);
617 struct rpc_call_ops nfs41_call_sync_ops
= {
618 .rpc_call_prepare
= nfs41_call_sync_prepare
,
619 .rpc_call_done
= nfs41_call_sync_done
,
622 struct rpc_call_ops nfs41_call_priv_sync_ops
= {
623 .rpc_call_prepare
= nfs41_call_priv_sync_prepare
,
624 .rpc_call_done
= nfs41_call_sync_done
,
627 static int nfs4_call_sync_sequence(struct nfs_server
*server
,
628 struct rpc_message
*msg
,
629 struct nfs4_sequence_args
*args
,
630 struct nfs4_sequence_res
*res
,
635 struct rpc_task
*task
;
636 struct nfs41_call_sync_data data
= {
637 .seq_server
= server
,
640 .cache_reply
= cache_reply
,
642 struct rpc_task_setup task_setup
= {
643 .rpc_client
= server
->client
,
645 .callback_ops
= &nfs41_call_sync_ops
,
646 .callback_data
= &data
651 task_setup
.callback_ops
= &nfs41_call_priv_sync_ops
;
652 task
= rpc_run_task(&task_setup
);
656 ret
= task
->tk_status
;
662 int _nfs4_call_sync_session(struct nfs_server
*server
,
663 struct rpc_message
*msg
,
664 struct nfs4_sequence_args
*args
,
665 struct nfs4_sequence_res
*res
,
668 return nfs4_call_sync_sequence(server
, msg
, args
, res
, cache_reply
, 0);
672 static int nfs4_sequence_done(struct rpc_task
*task
,
673 struct nfs4_sequence_res
*res
)
677 #endif /* CONFIG_NFS_V4_1 */
679 int _nfs4_call_sync(struct nfs_server
*server
,
680 struct rpc_message
*msg
,
681 struct nfs4_sequence_args
*args
,
682 struct nfs4_sequence_res
*res
,
685 args
->sa_session
= res
->sr_session
= NULL
;
686 return rpc_call_sync(server
->client
, msg
, 0);
689 #define nfs4_call_sync(server, msg, args, res, cache_reply) \
690 (server)->nfs_client->cl_mvops->call_sync((server), (msg), &(args)->seq_args, \
691 &(res)->seq_res, (cache_reply))
693 static void update_changeattr(struct inode
*dir
, struct nfs4_change_info
*cinfo
)
695 struct nfs_inode
*nfsi
= NFS_I(dir
);
697 spin_lock(&dir
->i_lock
);
698 nfsi
->cache_validity
|= NFS_INO_INVALID_ATTR
|NFS_INO_REVAL_PAGECACHE
|NFS_INO_INVALID_DATA
;
699 if (!cinfo
->atomic
|| cinfo
->before
!= nfsi
->change_attr
)
700 nfs_force_lookup_revalidate(dir
);
701 nfsi
->change_attr
= cinfo
->after
;
702 spin_unlock(&dir
->i_lock
);
705 struct nfs4_opendata
{
707 struct nfs_openargs o_arg
;
708 struct nfs_openres o_res
;
709 struct nfs_open_confirmargs c_arg
;
710 struct nfs_open_confirmres c_res
;
711 struct nfs_fattr f_attr
;
712 struct nfs_fattr dir_attr
;
715 struct nfs4_state_owner
*owner
;
716 struct nfs4_state
*state
;
718 unsigned long timestamp
;
719 unsigned int rpc_done
: 1;
725 static void nfs4_init_opendata_res(struct nfs4_opendata
*p
)
727 p
->o_res
.f_attr
= &p
->f_attr
;
728 p
->o_res
.dir_attr
= &p
->dir_attr
;
729 p
->o_res
.seqid
= p
->o_arg
.seqid
;
730 p
->c_res
.seqid
= p
->c_arg
.seqid
;
731 p
->o_res
.server
= p
->o_arg
.server
;
732 nfs_fattr_init(&p
->f_attr
);
733 nfs_fattr_init(&p
->dir_attr
);
736 static struct nfs4_opendata
*nfs4_opendata_alloc(struct path
*path
,
737 struct nfs4_state_owner
*sp
, fmode_t fmode
, int flags
,
738 const struct iattr
*attrs
,
741 struct dentry
*parent
= dget_parent(path
->dentry
);
742 struct inode
*dir
= parent
->d_inode
;
743 struct nfs_server
*server
= NFS_SERVER(dir
);
744 struct nfs4_opendata
*p
;
746 p
= kzalloc(sizeof(*p
), gfp_mask
);
749 p
->o_arg
.seqid
= nfs_alloc_seqid(&sp
->so_seqid
, gfp_mask
);
750 if (p
->o_arg
.seqid
== NULL
)
756 atomic_inc(&sp
->so_count
);
757 p
->o_arg
.fh
= NFS_FH(dir
);
758 p
->o_arg
.open_flags
= flags
;
759 p
->o_arg
.fmode
= fmode
& (FMODE_READ
|FMODE_WRITE
);
760 p
->o_arg
.clientid
= server
->nfs_client
->cl_clientid
;
761 p
->o_arg
.id
= sp
->so_owner_id
.id
;
762 p
->o_arg
.name
= &p
->path
.dentry
->d_name
;
763 p
->o_arg
.server
= server
;
764 p
->o_arg
.bitmask
= server
->attr_bitmask
;
765 p
->o_arg
.claim
= NFS4_OPEN_CLAIM_NULL
;
766 if (flags
& O_CREAT
) {
769 p
->o_arg
.u
.attrs
= &p
->attrs
;
770 memcpy(&p
->attrs
, attrs
, sizeof(p
->attrs
));
771 s
= (u32
*) p
->o_arg
.u
.verifier
.data
;
775 p
->c_arg
.fh
= &p
->o_res
.fh
;
776 p
->c_arg
.stateid
= &p
->o_res
.stateid
;
777 p
->c_arg
.seqid
= p
->o_arg
.seqid
;
778 nfs4_init_opendata_res(p
);
788 static void nfs4_opendata_free(struct kref
*kref
)
790 struct nfs4_opendata
*p
= container_of(kref
,
791 struct nfs4_opendata
, kref
);
793 nfs_free_seqid(p
->o_arg
.seqid
);
794 if (p
->state
!= NULL
)
795 nfs4_put_open_state(p
->state
);
796 nfs4_put_state_owner(p
->owner
);
802 static void nfs4_opendata_put(struct nfs4_opendata
*p
)
805 kref_put(&p
->kref
, nfs4_opendata_free
);
808 static int nfs4_wait_for_completion_rpc_task(struct rpc_task
*task
)
812 ret
= rpc_wait_for_completion_task(task
);
816 static int can_open_cached(struct nfs4_state
*state
, fmode_t mode
, int open_mode
)
820 if (open_mode
& O_EXCL
)
822 switch (mode
& (FMODE_READ
|FMODE_WRITE
)) {
824 ret
|= test_bit(NFS_O_RDONLY_STATE
, &state
->flags
) != 0
825 && state
->n_rdonly
!= 0;
828 ret
|= test_bit(NFS_O_WRONLY_STATE
, &state
->flags
) != 0
829 && state
->n_wronly
!= 0;
831 case FMODE_READ
|FMODE_WRITE
:
832 ret
|= test_bit(NFS_O_RDWR_STATE
, &state
->flags
) != 0
833 && state
->n_rdwr
!= 0;
839 static int can_open_delegated(struct nfs_delegation
*delegation
, fmode_t fmode
)
841 if ((delegation
->type
& fmode
) != fmode
)
843 if (test_bit(NFS_DELEGATION_NEED_RECLAIM
, &delegation
->flags
))
845 nfs_mark_delegation_referenced(delegation
);
849 static void update_open_stateflags(struct nfs4_state
*state
, fmode_t fmode
)
858 case FMODE_READ
|FMODE_WRITE
:
861 nfs4_state_set_mode_locked(state
, state
->state
| fmode
);
864 static void nfs_set_open_stateid_locked(struct nfs4_state
*state
, nfs4_stateid
*stateid
, fmode_t fmode
)
866 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) == 0)
867 memcpy(state
->stateid
.data
, stateid
->data
, sizeof(state
->stateid
.data
));
868 memcpy(state
->open_stateid
.data
, stateid
->data
, sizeof(state
->open_stateid
.data
));
871 set_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
874 set_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
876 case FMODE_READ
|FMODE_WRITE
:
877 set_bit(NFS_O_RDWR_STATE
, &state
->flags
);
881 static void nfs_set_open_stateid(struct nfs4_state
*state
, nfs4_stateid
*stateid
, fmode_t fmode
)
883 write_seqlock(&state
->seqlock
);
884 nfs_set_open_stateid_locked(state
, stateid
, fmode
);
885 write_sequnlock(&state
->seqlock
);
888 static void __update_open_stateid(struct nfs4_state
*state
, nfs4_stateid
*open_stateid
, const nfs4_stateid
*deleg_stateid
, fmode_t fmode
)
891 * Protect the call to nfs4_state_set_mode_locked and
892 * serialise the stateid update
894 write_seqlock(&state
->seqlock
);
895 if (deleg_stateid
!= NULL
) {
896 memcpy(state
->stateid
.data
, deleg_stateid
->data
, sizeof(state
->stateid
.data
));
897 set_bit(NFS_DELEGATED_STATE
, &state
->flags
);
899 if (open_stateid
!= NULL
)
900 nfs_set_open_stateid_locked(state
, open_stateid
, fmode
);
901 write_sequnlock(&state
->seqlock
);
902 spin_lock(&state
->owner
->so_lock
);
903 update_open_stateflags(state
, fmode
);
904 spin_unlock(&state
->owner
->so_lock
);
907 static int update_open_stateid(struct nfs4_state
*state
, nfs4_stateid
*open_stateid
, nfs4_stateid
*delegation
, fmode_t fmode
)
909 struct nfs_inode
*nfsi
= NFS_I(state
->inode
);
910 struct nfs_delegation
*deleg_cur
;
913 fmode
&= (FMODE_READ
|FMODE_WRITE
);
916 deleg_cur
= rcu_dereference(nfsi
->delegation
);
917 if (deleg_cur
== NULL
)
920 spin_lock(&deleg_cur
->lock
);
921 if (nfsi
->delegation
!= deleg_cur
||
922 (deleg_cur
->type
& fmode
) != fmode
)
923 goto no_delegation_unlock
;
925 if (delegation
== NULL
)
926 delegation
= &deleg_cur
->stateid
;
927 else if (memcmp(deleg_cur
->stateid
.data
, delegation
->data
, NFS4_STATEID_SIZE
) != 0)
928 goto no_delegation_unlock
;
930 nfs_mark_delegation_referenced(deleg_cur
);
931 __update_open_stateid(state
, open_stateid
, &deleg_cur
->stateid
, fmode
);
933 no_delegation_unlock
:
934 spin_unlock(&deleg_cur
->lock
);
938 if (!ret
&& open_stateid
!= NULL
) {
939 __update_open_stateid(state
, open_stateid
, NULL
, fmode
);
947 static void nfs4_return_incompatible_delegation(struct inode
*inode
, fmode_t fmode
)
949 struct nfs_delegation
*delegation
;
952 delegation
= rcu_dereference(NFS_I(inode
)->delegation
);
953 if (delegation
== NULL
|| (delegation
->type
& fmode
) == fmode
) {
958 nfs_inode_return_delegation(inode
);
961 static struct nfs4_state
*nfs4_try_open_cached(struct nfs4_opendata
*opendata
)
963 struct nfs4_state
*state
= opendata
->state
;
964 struct nfs_inode
*nfsi
= NFS_I(state
->inode
);
965 struct nfs_delegation
*delegation
;
966 int open_mode
= opendata
->o_arg
.open_flags
& O_EXCL
;
967 fmode_t fmode
= opendata
->o_arg
.fmode
;
968 nfs4_stateid stateid
;
972 if (can_open_cached(state
, fmode
, open_mode
)) {
973 spin_lock(&state
->owner
->so_lock
);
974 if (can_open_cached(state
, fmode
, open_mode
)) {
975 update_open_stateflags(state
, fmode
);
976 spin_unlock(&state
->owner
->so_lock
);
977 goto out_return_state
;
979 spin_unlock(&state
->owner
->so_lock
);
982 delegation
= rcu_dereference(nfsi
->delegation
);
983 if (delegation
== NULL
||
984 !can_open_delegated(delegation
, fmode
)) {
988 /* Save the delegation */
989 memcpy(stateid
.data
, delegation
->stateid
.data
, sizeof(stateid
.data
));
991 ret
= nfs_may_open(state
->inode
, state
->owner
->so_cred
, open_mode
);
996 /* Try to update the stateid using the delegation */
997 if (update_open_stateid(state
, NULL
, &stateid
, fmode
))
998 goto out_return_state
;
1001 return ERR_PTR(ret
);
1003 atomic_inc(&state
->count
);
1007 static struct nfs4_state
*nfs4_opendata_to_nfs4_state(struct nfs4_opendata
*data
)
1009 struct inode
*inode
;
1010 struct nfs4_state
*state
= NULL
;
1011 struct nfs_delegation
*delegation
;
1014 if (!data
->rpc_done
) {
1015 state
= nfs4_try_open_cached(data
);
1020 if (!(data
->f_attr
.valid
& NFS_ATTR_FATTR
))
1022 inode
= nfs_fhget(data
->dir
->d_sb
, &data
->o_res
.fh
, &data
->f_attr
);
1023 ret
= PTR_ERR(inode
);
1027 state
= nfs4_get_open_state(inode
, data
->owner
);
1030 if (data
->o_res
.delegation_type
!= 0) {
1031 int delegation_flags
= 0;
1034 delegation
= rcu_dereference(NFS_I(inode
)->delegation
);
1036 delegation_flags
= delegation
->flags
;
1038 if ((delegation_flags
& 1UL<<NFS_DELEGATION_NEED_RECLAIM
) == 0)
1039 nfs_inode_set_delegation(state
->inode
,
1040 data
->owner
->so_cred
,
1043 nfs_inode_reclaim_delegation(state
->inode
,
1044 data
->owner
->so_cred
,
1048 update_open_stateid(state
, &data
->o_res
.stateid
, NULL
,
1056 return ERR_PTR(ret
);
1059 static struct nfs_open_context
*nfs4_state_find_open_context(struct nfs4_state
*state
)
1061 struct nfs_inode
*nfsi
= NFS_I(state
->inode
);
1062 struct nfs_open_context
*ctx
;
1064 spin_lock(&state
->inode
->i_lock
);
1065 list_for_each_entry(ctx
, &nfsi
->open_files
, list
) {
1066 if (ctx
->state
!= state
)
1068 get_nfs_open_context(ctx
);
1069 spin_unlock(&state
->inode
->i_lock
);
1072 spin_unlock(&state
->inode
->i_lock
);
1073 return ERR_PTR(-ENOENT
);
1076 static struct nfs4_opendata
*nfs4_open_recoverdata_alloc(struct nfs_open_context
*ctx
, struct nfs4_state
*state
)
1078 struct nfs4_opendata
*opendata
;
1080 opendata
= nfs4_opendata_alloc(&ctx
->path
, state
->owner
, 0, 0, NULL
, GFP_NOFS
);
1081 if (opendata
== NULL
)
1082 return ERR_PTR(-ENOMEM
);
1083 opendata
->state
= state
;
1084 atomic_inc(&state
->count
);
1088 static int nfs4_open_recover_helper(struct nfs4_opendata
*opendata
, fmode_t fmode
, struct nfs4_state
**res
)
1090 struct nfs4_state
*newstate
;
1093 opendata
->o_arg
.open_flags
= 0;
1094 opendata
->o_arg
.fmode
= fmode
;
1095 memset(&opendata
->o_res
, 0, sizeof(opendata
->o_res
));
1096 memset(&opendata
->c_res
, 0, sizeof(opendata
->c_res
));
1097 nfs4_init_opendata_res(opendata
);
1098 ret
= _nfs4_recover_proc_open(opendata
);
1101 newstate
= nfs4_opendata_to_nfs4_state(opendata
);
1102 if (IS_ERR(newstate
))
1103 return PTR_ERR(newstate
);
1104 nfs4_close_state(&opendata
->path
, newstate
, fmode
);
1109 static int nfs4_open_recover(struct nfs4_opendata
*opendata
, struct nfs4_state
*state
)
1111 struct nfs4_state
*newstate
;
1114 /* memory barrier prior to reading state->n_* */
1115 clear_bit(NFS_DELEGATED_STATE
, &state
->flags
);
1117 if (state
->n_rdwr
!= 0) {
1118 clear_bit(NFS_O_RDWR_STATE
, &state
->flags
);
1119 ret
= nfs4_open_recover_helper(opendata
, FMODE_READ
|FMODE_WRITE
, &newstate
);
1122 if (newstate
!= state
)
1125 if (state
->n_wronly
!= 0) {
1126 clear_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
1127 ret
= nfs4_open_recover_helper(opendata
, FMODE_WRITE
, &newstate
);
1130 if (newstate
!= state
)
1133 if (state
->n_rdonly
!= 0) {
1134 clear_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
1135 ret
= nfs4_open_recover_helper(opendata
, FMODE_READ
, &newstate
);
1138 if (newstate
!= state
)
1142 * We may have performed cached opens for all three recoveries.
1143 * Check if we need to update the current stateid.
1145 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) == 0 &&
1146 memcmp(state
->stateid
.data
, state
->open_stateid
.data
, sizeof(state
->stateid
.data
)) != 0) {
1147 write_seqlock(&state
->seqlock
);
1148 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) == 0)
1149 memcpy(state
->stateid
.data
, state
->open_stateid
.data
, sizeof(state
->stateid
.data
));
1150 write_sequnlock(&state
->seqlock
);
1157 * reclaim state on the server after a reboot.
1159 static int _nfs4_do_open_reclaim(struct nfs_open_context
*ctx
, struct nfs4_state
*state
)
1161 struct nfs_delegation
*delegation
;
1162 struct nfs4_opendata
*opendata
;
1163 fmode_t delegation_type
= 0;
1166 opendata
= nfs4_open_recoverdata_alloc(ctx
, state
);
1167 if (IS_ERR(opendata
))
1168 return PTR_ERR(opendata
);
1169 opendata
->o_arg
.claim
= NFS4_OPEN_CLAIM_PREVIOUS
;
1170 opendata
->o_arg
.fh
= NFS_FH(state
->inode
);
1172 delegation
= rcu_dereference(NFS_I(state
->inode
)->delegation
);
1173 if (delegation
!= NULL
&& test_bit(NFS_DELEGATION_NEED_RECLAIM
, &delegation
->flags
) != 0)
1174 delegation_type
= delegation
->type
;
1176 opendata
->o_arg
.u
.delegation_type
= delegation_type
;
1177 status
= nfs4_open_recover(opendata
, state
);
1178 nfs4_opendata_put(opendata
);
1182 static int nfs4_do_open_reclaim(struct nfs_open_context
*ctx
, struct nfs4_state
*state
)
1184 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
1185 struct nfs4_exception exception
= { };
1188 err
= _nfs4_do_open_reclaim(ctx
, state
);
1189 if (err
!= -NFS4ERR_DELAY
)
1191 nfs4_handle_exception(server
, err
, &exception
);
1192 } while (exception
.retry
);
1196 static int nfs4_open_reclaim(struct nfs4_state_owner
*sp
, struct nfs4_state
*state
)
1198 struct nfs_open_context
*ctx
;
1201 ctx
= nfs4_state_find_open_context(state
);
1203 return PTR_ERR(ctx
);
1204 ret
= nfs4_do_open_reclaim(ctx
, state
);
1205 put_nfs_open_context(ctx
);
1209 static int _nfs4_open_delegation_recall(struct nfs_open_context
*ctx
, struct nfs4_state
*state
, const nfs4_stateid
*stateid
)
1211 struct nfs4_opendata
*opendata
;
1214 opendata
= nfs4_open_recoverdata_alloc(ctx
, state
);
1215 if (IS_ERR(opendata
))
1216 return PTR_ERR(opendata
);
1217 opendata
->o_arg
.claim
= NFS4_OPEN_CLAIM_DELEGATE_CUR
;
1218 memcpy(opendata
->o_arg
.u
.delegation
.data
, stateid
->data
,
1219 sizeof(opendata
->o_arg
.u
.delegation
.data
));
1220 ret
= nfs4_open_recover(opendata
, state
);
1221 nfs4_opendata_put(opendata
);
1225 int nfs4_open_delegation_recall(struct nfs_open_context
*ctx
, struct nfs4_state
*state
, const nfs4_stateid
*stateid
)
1227 struct nfs4_exception exception
= { };
1228 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
1231 err
= _nfs4_open_delegation_recall(ctx
, state
, stateid
);
1237 case -NFS4ERR_BADSESSION
:
1238 case -NFS4ERR_BADSLOT
:
1239 case -NFS4ERR_BAD_HIGH_SLOT
:
1240 case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION
:
1241 case -NFS4ERR_DEADSESSION
:
1242 nfs4_schedule_state_recovery(
1243 server
->nfs_client
);
1245 case -NFS4ERR_STALE_CLIENTID
:
1246 case -NFS4ERR_STALE_STATEID
:
1247 case -NFS4ERR_EXPIRED
:
1248 /* Don't recall a delegation if it was lost */
1249 nfs4_schedule_state_recovery(server
->nfs_client
);
1253 * The show must go on: exit, but mark the
1254 * stateid as needing recovery.
1256 case -NFS4ERR_ADMIN_REVOKED
:
1257 case -NFS4ERR_BAD_STATEID
:
1258 nfs4_state_mark_reclaim_nograce(server
->nfs_client
, state
);
1261 * User RPCSEC_GSS context has expired.
1262 * We cannot recover this stateid now, so
1263 * skip it and allow recovery thread to
1270 err
= nfs4_handle_exception(server
, err
, &exception
);
1271 } while (exception
.retry
);
1276 static void nfs4_open_confirm_done(struct rpc_task
*task
, void *calldata
)
1278 struct nfs4_opendata
*data
= calldata
;
1280 data
->rpc_status
= task
->tk_status
;
1281 if (data
->rpc_status
== 0) {
1282 memcpy(data
->o_res
.stateid
.data
, data
->c_res
.stateid
.data
,
1283 sizeof(data
->o_res
.stateid
.data
));
1284 nfs_confirm_seqid(&data
->owner
->so_seqid
, 0);
1285 renew_lease(data
->o_res
.server
, data
->timestamp
);
1290 static void nfs4_open_confirm_release(void *calldata
)
1292 struct nfs4_opendata
*data
= calldata
;
1293 struct nfs4_state
*state
= NULL
;
1295 /* If this request hasn't been cancelled, do nothing */
1296 if (data
->cancelled
== 0)
1298 /* In case of error, no cleanup! */
1299 if (!data
->rpc_done
)
1301 state
= nfs4_opendata_to_nfs4_state(data
);
1303 nfs4_close_state(&data
->path
, state
, data
->o_arg
.fmode
);
1305 nfs4_opendata_put(data
);
1308 static const struct rpc_call_ops nfs4_open_confirm_ops
= {
1309 .rpc_call_done
= nfs4_open_confirm_done
,
1310 .rpc_release
= nfs4_open_confirm_release
,
1314 * Note: On error, nfs4_proc_open_confirm will free the struct nfs4_opendata
1316 static int _nfs4_proc_open_confirm(struct nfs4_opendata
*data
)
1318 struct nfs_server
*server
= NFS_SERVER(data
->dir
->d_inode
);
1319 struct rpc_task
*task
;
1320 struct rpc_message msg
= {
1321 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_OPEN_CONFIRM
],
1322 .rpc_argp
= &data
->c_arg
,
1323 .rpc_resp
= &data
->c_res
,
1324 .rpc_cred
= data
->owner
->so_cred
,
1326 struct rpc_task_setup task_setup_data
= {
1327 .rpc_client
= server
->client
,
1328 .rpc_message
= &msg
,
1329 .callback_ops
= &nfs4_open_confirm_ops
,
1330 .callback_data
= data
,
1331 .workqueue
= nfsiod_workqueue
,
1332 .flags
= RPC_TASK_ASYNC
,
1336 kref_get(&data
->kref
);
1338 data
->rpc_status
= 0;
1339 data
->timestamp
= jiffies
;
1340 task
= rpc_run_task(&task_setup_data
);
1342 return PTR_ERR(task
);
1343 status
= nfs4_wait_for_completion_rpc_task(task
);
1345 data
->cancelled
= 1;
1348 status
= data
->rpc_status
;
1353 static void nfs4_open_prepare(struct rpc_task
*task
, void *calldata
)
1355 struct nfs4_opendata
*data
= calldata
;
1356 struct nfs4_state_owner
*sp
= data
->owner
;
1358 if (nfs_wait_on_sequence(data
->o_arg
.seqid
, task
) != 0)
1361 * Check if we still need to send an OPEN call, or if we can use
1362 * a delegation instead.
1364 if (data
->state
!= NULL
) {
1365 struct nfs_delegation
*delegation
;
1367 if (can_open_cached(data
->state
, data
->o_arg
.fmode
, data
->o_arg
.open_flags
))
1370 delegation
= rcu_dereference(NFS_I(data
->state
->inode
)->delegation
);
1371 if (delegation
!= NULL
&&
1372 test_bit(NFS_DELEGATION_NEED_RECLAIM
, &delegation
->flags
) == 0) {
1378 /* Update sequence id. */
1379 data
->o_arg
.id
= sp
->so_owner_id
.id
;
1380 data
->o_arg
.clientid
= sp
->so_server
->nfs_client
->cl_clientid
;
1381 if (data
->o_arg
.claim
== NFS4_OPEN_CLAIM_PREVIOUS
) {
1382 task
->tk_msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_OPEN_NOATTR
];
1383 nfs_copy_fh(&data
->o_res
.fh
, data
->o_arg
.fh
);
1385 data
->timestamp
= jiffies
;
1386 if (nfs4_setup_sequence(data
->o_arg
.server
,
1387 &data
->o_arg
.seq_args
,
1388 &data
->o_res
.seq_res
, 1, task
))
1390 rpc_call_start(task
);
1393 task
->tk_action
= NULL
;
1397 static void nfs4_recover_open_prepare(struct rpc_task
*task
, void *calldata
)
1399 rpc_task_set_priority(task
, RPC_PRIORITY_PRIVILEGED
);
1400 nfs4_open_prepare(task
, calldata
);
1403 static void nfs4_open_done(struct rpc_task
*task
, void *calldata
)
1405 struct nfs4_opendata
*data
= calldata
;
1407 data
->rpc_status
= task
->tk_status
;
1409 if (!nfs4_sequence_done(task
, &data
->o_res
.seq_res
))
1412 if (task
->tk_status
== 0) {
1413 switch (data
->o_res
.f_attr
->mode
& S_IFMT
) {
1417 data
->rpc_status
= -ELOOP
;
1420 data
->rpc_status
= -EISDIR
;
1423 data
->rpc_status
= -ENOTDIR
;
1425 renew_lease(data
->o_res
.server
, data
->timestamp
);
1426 if (!(data
->o_res
.rflags
& NFS4_OPEN_RESULT_CONFIRM
))
1427 nfs_confirm_seqid(&data
->owner
->so_seqid
, 0);
1432 static void nfs4_open_release(void *calldata
)
1434 struct nfs4_opendata
*data
= calldata
;
1435 struct nfs4_state
*state
= NULL
;
1437 /* If this request hasn't been cancelled, do nothing */
1438 if (data
->cancelled
== 0)
1440 /* In case of error, no cleanup! */
1441 if (data
->rpc_status
!= 0 || !data
->rpc_done
)
1443 /* In case we need an open_confirm, no cleanup! */
1444 if (data
->o_res
.rflags
& NFS4_OPEN_RESULT_CONFIRM
)
1446 state
= nfs4_opendata_to_nfs4_state(data
);
1448 nfs4_close_state(&data
->path
, state
, data
->o_arg
.fmode
);
1450 nfs4_opendata_put(data
);
1453 static const struct rpc_call_ops nfs4_open_ops
= {
1454 .rpc_call_prepare
= nfs4_open_prepare
,
1455 .rpc_call_done
= nfs4_open_done
,
1456 .rpc_release
= nfs4_open_release
,
1459 static const struct rpc_call_ops nfs4_recover_open_ops
= {
1460 .rpc_call_prepare
= nfs4_recover_open_prepare
,
1461 .rpc_call_done
= nfs4_open_done
,
1462 .rpc_release
= nfs4_open_release
,
1465 static int nfs4_run_open_task(struct nfs4_opendata
*data
, int isrecover
)
1467 struct inode
*dir
= data
->dir
->d_inode
;
1468 struct nfs_server
*server
= NFS_SERVER(dir
);
1469 struct nfs_openargs
*o_arg
= &data
->o_arg
;
1470 struct nfs_openres
*o_res
= &data
->o_res
;
1471 struct rpc_task
*task
;
1472 struct rpc_message msg
= {
1473 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_OPEN
],
1476 .rpc_cred
= data
->owner
->so_cred
,
1478 struct rpc_task_setup task_setup_data
= {
1479 .rpc_client
= server
->client
,
1480 .rpc_message
= &msg
,
1481 .callback_ops
= &nfs4_open_ops
,
1482 .callback_data
= data
,
1483 .workqueue
= nfsiod_workqueue
,
1484 .flags
= RPC_TASK_ASYNC
,
1488 kref_get(&data
->kref
);
1490 data
->rpc_status
= 0;
1491 data
->cancelled
= 0;
1493 task_setup_data
.callback_ops
= &nfs4_recover_open_ops
;
1494 task
= rpc_run_task(&task_setup_data
);
1496 return PTR_ERR(task
);
1497 status
= nfs4_wait_for_completion_rpc_task(task
);
1499 data
->cancelled
= 1;
1502 status
= data
->rpc_status
;
1508 static int _nfs4_recover_proc_open(struct nfs4_opendata
*data
)
1510 struct inode
*dir
= data
->dir
->d_inode
;
1511 struct nfs_openres
*o_res
= &data
->o_res
;
1514 status
= nfs4_run_open_task(data
, 1);
1515 if (status
!= 0 || !data
->rpc_done
)
1518 nfs_refresh_inode(dir
, o_res
->dir_attr
);
1520 if (o_res
->rflags
& NFS4_OPEN_RESULT_CONFIRM
) {
1521 status
= _nfs4_proc_open_confirm(data
);
1530 * Note: On error, nfs4_proc_open will free the struct nfs4_opendata
1532 static int _nfs4_proc_open(struct nfs4_opendata
*data
)
1534 struct inode
*dir
= data
->dir
->d_inode
;
1535 struct nfs_server
*server
= NFS_SERVER(dir
);
1536 struct nfs_openargs
*o_arg
= &data
->o_arg
;
1537 struct nfs_openres
*o_res
= &data
->o_res
;
1540 status
= nfs4_run_open_task(data
, 0);
1541 if (status
!= 0 || !data
->rpc_done
)
1544 if (o_arg
->open_flags
& O_CREAT
) {
1545 update_changeattr(dir
, &o_res
->cinfo
);
1546 nfs_post_op_update_inode(dir
, o_res
->dir_attr
);
1548 nfs_refresh_inode(dir
, o_res
->dir_attr
);
1549 if ((o_res
->rflags
& NFS4_OPEN_RESULT_LOCKTYPE_POSIX
) == 0)
1550 server
->caps
&= ~NFS_CAP_POSIX_LOCK
;
1551 if(o_res
->rflags
& NFS4_OPEN_RESULT_CONFIRM
) {
1552 status
= _nfs4_proc_open_confirm(data
);
1556 if (!(o_res
->f_attr
->valid
& NFS_ATTR_FATTR
))
1557 _nfs4_proc_getattr(server
, &o_res
->fh
, o_res
->f_attr
);
1561 static int nfs4_recover_expired_lease(struct nfs_server
*server
)
1563 struct nfs_client
*clp
= server
->nfs_client
;
1567 for (loop
= NFS4_MAX_LOOP_ON_RECOVER
; loop
!= 0; loop
--) {
1568 ret
= nfs4_wait_clnt_recover(clp
);
1571 if (!test_bit(NFS4CLNT_LEASE_EXPIRED
, &clp
->cl_state
) &&
1572 !test_bit(NFS4CLNT_CHECK_LEASE
,&clp
->cl_state
))
1574 nfs4_schedule_state_recovery(clp
);
1582 * reclaim state on the server after a network partition.
1583 * Assumes caller holds the appropriate lock
1585 static int _nfs4_open_expired(struct nfs_open_context
*ctx
, struct nfs4_state
*state
)
1587 struct nfs4_opendata
*opendata
;
1590 opendata
= nfs4_open_recoverdata_alloc(ctx
, state
);
1591 if (IS_ERR(opendata
))
1592 return PTR_ERR(opendata
);
1593 ret
= nfs4_open_recover(opendata
, state
);
1595 d_drop(ctx
->path
.dentry
);
1596 nfs4_opendata_put(opendata
);
1600 static int nfs4_do_open_expired(struct nfs_open_context
*ctx
, struct nfs4_state
*state
)
1602 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
1603 struct nfs4_exception exception
= { };
1607 err
= _nfs4_open_expired(ctx
, state
);
1611 case -NFS4ERR_GRACE
:
1612 case -NFS4ERR_DELAY
:
1613 nfs4_handle_exception(server
, err
, &exception
);
1616 } while (exception
.retry
);
1621 static int nfs4_open_expired(struct nfs4_state_owner
*sp
, struct nfs4_state
*state
)
1623 struct nfs_open_context
*ctx
;
1626 ctx
= nfs4_state_find_open_context(state
);
1628 return PTR_ERR(ctx
);
1629 ret
= nfs4_do_open_expired(ctx
, state
);
1630 put_nfs_open_context(ctx
);
1635 * on an EXCLUSIVE create, the server should send back a bitmask with FATTR4-*
1636 * fields corresponding to attributes that were used to store the verifier.
1637 * Make sure we clobber those fields in the later setattr call
1639 static inline void nfs4_exclusive_attrset(struct nfs4_opendata
*opendata
, struct iattr
*sattr
)
1641 if ((opendata
->o_res
.attrset
[1] & FATTR4_WORD1_TIME_ACCESS
) &&
1642 !(sattr
->ia_valid
& ATTR_ATIME_SET
))
1643 sattr
->ia_valid
|= ATTR_ATIME
;
1645 if ((opendata
->o_res
.attrset
[1] & FATTR4_WORD1_TIME_MODIFY
) &&
1646 !(sattr
->ia_valid
& ATTR_MTIME_SET
))
1647 sattr
->ia_valid
|= ATTR_MTIME
;
1651 * Returns a referenced nfs4_state
1653 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
)
1655 struct nfs4_state_owner
*sp
;
1656 struct nfs4_state
*state
= NULL
;
1657 struct nfs_server
*server
= NFS_SERVER(dir
);
1658 struct nfs4_opendata
*opendata
;
1661 /* Protect against reboot recovery conflicts */
1663 if (!(sp
= nfs4_get_state_owner(server
, cred
))) {
1664 dprintk("nfs4_do_open: nfs4_get_state_owner failed!\n");
1667 status
= nfs4_recover_expired_lease(server
);
1669 goto err_put_state_owner
;
1670 if (path
->dentry
->d_inode
!= NULL
)
1671 nfs4_return_incompatible_delegation(path
->dentry
->d_inode
, fmode
);
1673 opendata
= nfs4_opendata_alloc(path
, sp
, fmode
, flags
, sattr
, GFP_KERNEL
);
1674 if (opendata
== NULL
)
1675 goto err_put_state_owner
;
1677 if (path
->dentry
->d_inode
!= NULL
)
1678 opendata
->state
= nfs4_get_open_state(path
->dentry
->d_inode
, sp
);
1680 status
= _nfs4_proc_open(opendata
);
1682 goto err_opendata_put
;
1684 state
= nfs4_opendata_to_nfs4_state(opendata
);
1685 status
= PTR_ERR(state
);
1687 goto err_opendata_put
;
1688 if (server
->caps
& NFS_CAP_POSIX_LOCK
)
1689 set_bit(NFS_STATE_POSIX_LOCKS
, &state
->flags
);
1691 if (opendata
->o_arg
.open_flags
& O_EXCL
) {
1692 nfs4_exclusive_attrset(opendata
, sattr
);
1694 nfs_fattr_init(opendata
->o_res
.f_attr
);
1695 status
= nfs4_do_setattr(state
->inode
, cred
,
1696 opendata
->o_res
.f_attr
, sattr
,
1699 nfs_setattr_update_inode(state
->inode
, sattr
);
1700 nfs_post_op_update_inode(state
->inode
, opendata
->o_res
.f_attr
);
1702 nfs4_opendata_put(opendata
);
1703 nfs4_put_state_owner(sp
);
1707 nfs4_opendata_put(opendata
);
1708 err_put_state_owner
:
1709 nfs4_put_state_owner(sp
);
1716 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
)
1718 struct nfs4_exception exception
= { };
1719 struct nfs4_state
*res
;
1723 status
= _nfs4_do_open(dir
, path
, fmode
, flags
, sattr
, cred
, &res
);
1726 /* NOTE: BAD_SEQID means the server and client disagree about the
1727 * book-keeping w.r.t. state-changing operations
1728 * (OPEN/CLOSE/LOCK/LOCKU...)
1729 * It is actually a sign of a bug on the client or on the server.
1731 * If we receive a BAD_SEQID error in the particular case of
1732 * doing an OPEN, we assume that nfs_increment_open_seqid() will
1733 * have unhashed the old state_owner for us, and that we can
1734 * therefore safely retry using a new one. We should still warn
1735 * the user though...
1737 if (status
== -NFS4ERR_BAD_SEQID
) {
1738 printk(KERN_WARNING
"NFS: v4 server %s "
1739 " returned a bad sequence-id error!\n",
1740 NFS_SERVER(dir
)->nfs_client
->cl_hostname
);
1741 exception
.retry
= 1;
1745 * BAD_STATEID on OPEN means that the server cancelled our
1746 * state before it received the OPEN_CONFIRM.
1747 * Recover by retrying the request as per the discussion
1748 * on Page 181 of RFC3530.
1750 if (status
== -NFS4ERR_BAD_STATEID
) {
1751 exception
.retry
= 1;
1754 if (status
== -EAGAIN
) {
1755 /* We must have found a delegation */
1756 exception
.retry
= 1;
1759 res
= ERR_PTR(nfs4_handle_exception(NFS_SERVER(dir
),
1760 status
, &exception
));
1761 } while (exception
.retry
);
1765 static int _nfs4_do_setattr(struct inode
*inode
, struct rpc_cred
*cred
,
1766 struct nfs_fattr
*fattr
, struct iattr
*sattr
,
1767 struct nfs4_state
*state
)
1769 struct nfs_server
*server
= NFS_SERVER(inode
);
1770 struct nfs_setattrargs arg
= {
1771 .fh
= NFS_FH(inode
),
1774 .bitmask
= server
->attr_bitmask
,
1776 struct nfs_setattrres res
= {
1780 struct rpc_message msg
= {
1781 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETATTR
],
1786 unsigned long timestamp
= jiffies
;
1789 nfs_fattr_init(fattr
);
1791 if (nfs4_copy_delegation_stateid(&arg
.stateid
, inode
)) {
1792 /* Use that stateid */
1793 } else if (state
!= NULL
) {
1794 nfs4_copy_stateid(&arg
.stateid
, state
, current
->files
, current
->tgid
);
1796 memcpy(&arg
.stateid
, &zero_stateid
, sizeof(arg
.stateid
));
1798 status
= nfs4_call_sync(server
, &msg
, &arg
, &res
, 1);
1799 if (status
== 0 && state
!= NULL
)
1800 renew_lease(server
, timestamp
);
1804 static int nfs4_do_setattr(struct inode
*inode
, struct rpc_cred
*cred
,
1805 struct nfs_fattr
*fattr
, struct iattr
*sattr
,
1806 struct nfs4_state
*state
)
1808 struct nfs_server
*server
= NFS_SERVER(inode
);
1809 struct nfs4_exception exception
= { };
1812 err
= nfs4_handle_exception(server
,
1813 _nfs4_do_setattr(inode
, cred
, fattr
, sattr
, state
),
1815 } while (exception
.retry
);
1819 struct nfs4_closedata
{
1821 struct inode
*inode
;
1822 struct nfs4_state
*state
;
1823 struct nfs_closeargs arg
;
1824 struct nfs_closeres res
;
1825 struct nfs_fattr fattr
;
1826 unsigned long timestamp
;
1829 static void nfs4_free_closedata(void *data
)
1831 struct nfs4_closedata
*calldata
= data
;
1832 struct nfs4_state_owner
*sp
= calldata
->state
->owner
;
1834 nfs4_put_open_state(calldata
->state
);
1835 nfs_free_seqid(calldata
->arg
.seqid
);
1836 nfs4_put_state_owner(sp
);
1837 path_put(&calldata
->path
);
1841 static void nfs4_close_clear_stateid_flags(struct nfs4_state
*state
,
1844 spin_lock(&state
->owner
->so_lock
);
1845 if (!(fmode
& FMODE_READ
))
1846 clear_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
1847 if (!(fmode
& FMODE_WRITE
))
1848 clear_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
1849 clear_bit(NFS_O_RDWR_STATE
, &state
->flags
);
1850 spin_unlock(&state
->owner
->so_lock
);
1853 static void nfs4_close_done(struct rpc_task
*task
, void *data
)
1855 struct nfs4_closedata
*calldata
= data
;
1856 struct nfs4_state
*state
= calldata
->state
;
1857 struct nfs_server
*server
= NFS_SERVER(calldata
->inode
);
1859 if (!nfs4_sequence_done(task
, &calldata
->res
.seq_res
))
1861 /* hmm. we are done with the inode, and in the process of freeing
1862 * the state_owner. we keep this around to process errors
1864 switch (task
->tk_status
) {
1866 nfs_set_open_stateid(state
, &calldata
->res
.stateid
, 0);
1867 renew_lease(server
, calldata
->timestamp
);
1868 nfs4_close_clear_stateid_flags(state
,
1869 calldata
->arg
.fmode
);
1871 case -NFS4ERR_STALE_STATEID
:
1872 case -NFS4ERR_OLD_STATEID
:
1873 case -NFS4ERR_BAD_STATEID
:
1874 case -NFS4ERR_EXPIRED
:
1875 if (calldata
->arg
.fmode
== 0)
1878 if (nfs4_async_handle_error(task
, server
, state
) == -EAGAIN
)
1879 rpc_restart_call_prepare(task
);
1881 nfs_release_seqid(calldata
->arg
.seqid
);
1882 nfs_refresh_inode(calldata
->inode
, calldata
->res
.fattr
);
1885 static void nfs4_close_prepare(struct rpc_task
*task
, void *data
)
1887 struct nfs4_closedata
*calldata
= data
;
1888 struct nfs4_state
*state
= calldata
->state
;
1891 if (nfs_wait_on_sequence(calldata
->arg
.seqid
, task
) != 0)
1894 task
->tk_msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_OPEN_DOWNGRADE
];
1895 calldata
->arg
.fmode
= FMODE_READ
|FMODE_WRITE
;
1896 spin_lock(&state
->owner
->so_lock
);
1897 /* Calculate the change in open mode */
1898 if (state
->n_rdwr
== 0) {
1899 if (state
->n_rdonly
== 0) {
1900 call_close
|= test_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
1901 call_close
|= test_bit(NFS_O_RDWR_STATE
, &state
->flags
);
1902 calldata
->arg
.fmode
&= ~FMODE_READ
;
1904 if (state
->n_wronly
== 0) {
1905 call_close
|= test_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
1906 call_close
|= test_bit(NFS_O_RDWR_STATE
, &state
->flags
);
1907 calldata
->arg
.fmode
&= ~FMODE_WRITE
;
1910 spin_unlock(&state
->owner
->so_lock
);
1913 /* Note: exit _without_ calling nfs4_close_done */
1914 task
->tk_action
= NULL
;
1918 if (calldata
->arg
.fmode
== 0)
1919 task
->tk_msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_CLOSE
];
1921 nfs_fattr_init(calldata
->res
.fattr
);
1922 calldata
->timestamp
= jiffies
;
1923 if (nfs4_setup_sequence(NFS_SERVER(calldata
->inode
),
1924 &calldata
->arg
.seq_args
, &calldata
->res
.seq_res
,
1927 rpc_call_start(task
);
1930 static const struct rpc_call_ops nfs4_close_ops
= {
1931 .rpc_call_prepare
= nfs4_close_prepare
,
1932 .rpc_call_done
= nfs4_close_done
,
1933 .rpc_release
= nfs4_free_closedata
,
1937 * It is possible for data to be read/written from a mem-mapped file
1938 * after the sys_close call (which hits the vfs layer as a flush).
1939 * This means that we can't safely call nfsv4 close on a file until
1940 * the inode is cleared. This in turn means that we are not good
1941 * NFSv4 citizens - we do not indicate to the server to update the file's
1942 * share state even when we are done with one of the three share
1943 * stateid's in the inode.
1945 * NOTE: Caller must be holding the sp->so_owner semaphore!
1947 int nfs4_do_close(struct path
*path
, struct nfs4_state
*state
, gfp_t gfp_mask
, int wait
)
1949 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
1950 struct nfs4_closedata
*calldata
;
1951 struct nfs4_state_owner
*sp
= state
->owner
;
1952 struct rpc_task
*task
;
1953 struct rpc_message msg
= {
1954 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_CLOSE
],
1955 .rpc_cred
= state
->owner
->so_cred
,
1957 struct rpc_task_setup task_setup_data
= {
1958 .rpc_client
= server
->client
,
1959 .rpc_message
= &msg
,
1960 .callback_ops
= &nfs4_close_ops
,
1961 .workqueue
= nfsiod_workqueue
,
1962 .flags
= RPC_TASK_ASYNC
,
1964 int status
= -ENOMEM
;
1966 calldata
= kzalloc(sizeof(*calldata
), gfp_mask
);
1967 if (calldata
== NULL
)
1969 calldata
->inode
= state
->inode
;
1970 calldata
->state
= state
;
1971 calldata
->arg
.fh
= NFS_FH(state
->inode
);
1972 calldata
->arg
.stateid
= &state
->open_stateid
;
1973 /* Serialization for the sequence id */
1974 calldata
->arg
.seqid
= nfs_alloc_seqid(&state
->owner
->so_seqid
, gfp_mask
);
1975 if (calldata
->arg
.seqid
== NULL
)
1976 goto out_free_calldata
;
1977 calldata
->arg
.fmode
= 0;
1978 calldata
->arg
.bitmask
= server
->cache_consistency_bitmask
;
1979 calldata
->res
.fattr
= &calldata
->fattr
;
1980 calldata
->res
.seqid
= calldata
->arg
.seqid
;
1981 calldata
->res
.server
= server
;
1983 calldata
->path
= *path
;
1985 msg
.rpc_argp
= &calldata
->arg
,
1986 msg
.rpc_resp
= &calldata
->res
,
1987 task_setup_data
.callback_data
= calldata
;
1988 task
= rpc_run_task(&task_setup_data
);
1990 return PTR_ERR(task
);
1993 status
= rpc_wait_for_completion_task(task
);
1999 nfs4_put_open_state(state
);
2000 nfs4_put_state_owner(sp
);
2004 static struct inode
*
2005 nfs4_atomic_open(struct inode
*dir
, struct nfs_open_context
*ctx
, int open_flags
, struct iattr
*attr
)
2007 struct nfs4_state
*state
;
2009 /* Protect against concurrent sillydeletes */
2010 state
= nfs4_do_open(dir
, &ctx
->path
, ctx
->mode
, open_flags
, attr
, ctx
->cred
);
2012 return ERR_CAST(state
);
2014 return igrab(state
->inode
);
2017 static void nfs4_close_context(struct nfs_open_context
*ctx
, int is_sync
)
2019 if (ctx
->state
== NULL
)
2022 nfs4_close_sync(&ctx
->path
, ctx
->state
, ctx
->mode
);
2024 nfs4_close_state(&ctx
->path
, ctx
->state
, ctx
->mode
);
2027 static int _nfs4_server_capabilities(struct nfs_server
*server
, struct nfs_fh
*fhandle
)
2029 struct nfs4_server_caps_arg args
= {
2032 struct nfs4_server_caps_res res
= {};
2033 struct rpc_message msg
= {
2034 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SERVER_CAPS
],
2040 status
= nfs4_call_sync(server
, &msg
, &args
, &res
, 0);
2042 memcpy(server
->attr_bitmask
, res
.attr_bitmask
, sizeof(server
->attr_bitmask
));
2043 server
->caps
&= ~(NFS_CAP_ACLS
|NFS_CAP_HARDLINKS
|
2044 NFS_CAP_SYMLINKS
|NFS_CAP_FILEID
|
2045 NFS_CAP_MODE
|NFS_CAP_NLINK
|NFS_CAP_OWNER
|
2046 NFS_CAP_OWNER_GROUP
|NFS_CAP_ATIME
|
2047 NFS_CAP_CTIME
|NFS_CAP_MTIME
);
2048 if (res
.attr_bitmask
[0] & FATTR4_WORD0_ACL
)
2049 server
->caps
|= NFS_CAP_ACLS
;
2050 if (res
.has_links
!= 0)
2051 server
->caps
|= NFS_CAP_HARDLINKS
;
2052 if (res
.has_symlinks
!= 0)
2053 server
->caps
|= NFS_CAP_SYMLINKS
;
2054 if (res
.attr_bitmask
[0] & FATTR4_WORD0_FILEID
)
2055 server
->caps
|= NFS_CAP_FILEID
;
2056 if (res
.attr_bitmask
[1] & FATTR4_WORD1_MODE
)
2057 server
->caps
|= NFS_CAP_MODE
;
2058 if (res
.attr_bitmask
[1] & FATTR4_WORD1_NUMLINKS
)
2059 server
->caps
|= NFS_CAP_NLINK
;
2060 if (res
.attr_bitmask
[1] & FATTR4_WORD1_OWNER
)
2061 server
->caps
|= NFS_CAP_OWNER
;
2062 if (res
.attr_bitmask
[1] & FATTR4_WORD1_OWNER_GROUP
)
2063 server
->caps
|= NFS_CAP_OWNER_GROUP
;
2064 if (res
.attr_bitmask
[1] & FATTR4_WORD1_TIME_ACCESS
)
2065 server
->caps
|= NFS_CAP_ATIME
;
2066 if (res
.attr_bitmask
[1] & FATTR4_WORD1_TIME_METADATA
)
2067 server
->caps
|= NFS_CAP_CTIME
;
2068 if (res
.attr_bitmask
[1] & FATTR4_WORD1_TIME_MODIFY
)
2069 server
->caps
|= NFS_CAP_MTIME
;
2071 memcpy(server
->cache_consistency_bitmask
, res
.attr_bitmask
, sizeof(server
->cache_consistency_bitmask
));
2072 server
->cache_consistency_bitmask
[0] &= FATTR4_WORD0_CHANGE
|FATTR4_WORD0_SIZE
;
2073 server
->cache_consistency_bitmask
[1] &= FATTR4_WORD1_TIME_METADATA
|FATTR4_WORD1_TIME_MODIFY
;
2074 server
->acl_bitmask
= res
.acl_bitmask
;
2080 int nfs4_server_capabilities(struct nfs_server
*server
, struct nfs_fh
*fhandle
)
2082 struct nfs4_exception exception
= { };
2085 err
= nfs4_handle_exception(server
,
2086 _nfs4_server_capabilities(server
, fhandle
),
2088 } while (exception
.retry
);
2092 static int _nfs4_lookup_root(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
2093 struct nfs_fsinfo
*info
)
2095 struct nfs4_lookup_root_arg args
= {
2096 .bitmask
= nfs4_fattr_bitmap
,
2098 struct nfs4_lookup_res res
= {
2100 .fattr
= info
->fattr
,
2103 struct rpc_message msg
= {
2104 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOOKUP_ROOT
],
2109 nfs_fattr_init(info
->fattr
);
2110 return nfs4_call_sync(server
, &msg
, &args
, &res
, 0);
2113 static int nfs4_lookup_root(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
2114 struct nfs_fsinfo
*info
)
2116 struct nfs4_exception exception
= { };
2119 err
= nfs4_handle_exception(server
,
2120 _nfs4_lookup_root(server
, fhandle
, info
),
2122 } while (exception
.retry
);
2127 * get the file handle for the "/" directory on the server
2129 static int nfs4_proc_get_root(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
2130 struct nfs_fsinfo
*info
)
2134 status
= nfs4_lookup_root(server
, fhandle
, info
);
2136 status
= nfs4_server_capabilities(server
, fhandle
);
2138 status
= nfs4_do_fsinfo(server
, fhandle
, info
);
2139 return nfs4_map_errors(status
);
2143 * Get locations and (maybe) other attributes of a referral.
2144 * Note that we'll actually follow the referral later when
2145 * we detect fsid mismatch in inode revalidation
2147 static int nfs4_get_referral(struct inode
*dir
, const struct qstr
*name
, struct nfs_fattr
*fattr
, struct nfs_fh
*fhandle
)
2149 int status
= -ENOMEM
;
2150 struct page
*page
= NULL
;
2151 struct nfs4_fs_locations
*locations
= NULL
;
2153 page
= alloc_page(GFP_KERNEL
);
2156 locations
= kmalloc(sizeof(struct nfs4_fs_locations
), GFP_KERNEL
);
2157 if (locations
== NULL
)
2160 status
= nfs4_proc_fs_locations(dir
, name
, locations
, page
);
2163 /* Make sure server returned a different fsid for the referral */
2164 if (nfs_fsid_equal(&NFS_SERVER(dir
)->fsid
, &locations
->fattr
.fsid
)) {
2165 dprintk("%s: server did not return a different fsid for a referral at %s\n", __func__
, name
->name
);
2170 memcpy(fattr
, &locations
->fattr
, sizeof(struct nfs_fattr
));
2171 fattr
->valid
|= NFS_ATTR_FATTR_V4_REFERRAL
;
2173 fattr
->mode
= S_IFDIR
;
2174 memset(fhandle
, 0, sizeof(struct nfs_fh
));
2182 static int _nfs4_proc_getattr(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fattr
*fattr
)
2184 struct nfs4_getattr_arg args
= {
2186 .bitmask
= server
->attr_bitmask
,
2188 struct nfs4_getattr_res res
= {
2192 struct rpc_message msg
= {
2193 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GETATTR
],
2198 nfs_fattr_init(fattr
);
2199 return nfs4_call_sync(server
, &msg
, &args
, &res
, 0);
2202 static int nfs4_proc_getattr(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fattr
*fattr
)
2204 struct nfs4_exception exception
= { };
2207 err
= nfs4_handle_exception(server
,
2208 _nfs4_proc_getattr(server
, fhandle
, fattr
),
2210 } while (exception
.retry
);
2215 * The file is not closed if it is opened due to the a request to change
2216 * the size of the file. The open call will not be needed once the
2217 * VFS layer lookup-intents are implemented.
2219 * Close is called when the inode is destroyed.
2220 * If we haven't opened the file for O_WRONLY, we
2221 * need to in the size_change case to obtain a stateid.
2224 * Because OPEN is always done by name in nfsv4, it is
2225 * possible that we opened a different file by the same
2226 * name. We can recognize this race condition, but we
2227 * can't do anything about it besides returning an error.
2229 * This will be fixed with VFS changes (lookup-intent).
2232 nfs4_proc_setattr(struct dentry
*dentry
, struct nfs_fattr
*fattr
,
2233 struct iattr
*sattr
)
2235 struct inode
*inode
= dentry
->d_inode
;
2236 struct rpc_cred
*cred
= NULL
;
2237 struct nfs4_state
*state
= NULL
;
2240 nfs_fattr_init(fattr
);
2242 /* Search for an existing open(O_WRITE) file */
2243 if (sattr
->ia_valid
& ATTR_FILE
) {
2244 struct nfs_open_context
*ctx
;
2246 ctx
= nfs_file_open_context(sattr
->ia_file
);
2253 status
= nfs4_do_setattr(inode
, cred
, fattr
, sattr
, state
);
2255 nfs_setattr_update_inode(inode
, sattr
);
2259 static int _nfs4_proc_lookupfh(struct nfs_server
*server
, const struct nfs_fh
*dirfh
,
2260 const struct qstr
*name
, struct nfs_fh
*fhandle
,
2261 struct nfs_fattr
*fattr
)
2264 struct nfs4_lookup_arg args
= {
2265 .bitmask
= server
->attr_bitmask
,
2269 struct nfs4_lookup_res res
= {
2274 struct rpc_message msg
= {
2275 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOOKUP
],
2280 nfs_fattr_init(fattr
);
2282 dprintk("NFS call lookupfh %s\n", name
->name
);
2283 status
= nfs4_call_sync(server
, &msg
, &args
, &res
, 0);
2284 dprintk("NFS reply lookupfh: %d\n", status
);
2288 static int nfs4_proc_lookupfh(struct nfs_server
*server
, struct nfs_fh
*dirfh
,
2289 struct qstr
*name
, struct nfs_fh
*fhandle
,
2290 struct nfs_fattr
*fattr
)
2292 struct nfs4_exception exception
= { };
2295 err
= _nfs4_proc_lookupfh(server
, dirfh
, name
, fhandle
, fattr
);
2297 if (err
== -NFS4ERR_MOVED
) {
2301 err
= nfs4_handle_exception(server
, err
, &exception
);
2302 } while (exception
.retry
);
2306 static int _nfs4_proc_lookup(struct inode
*dir
, const struct qstr
*name
,
2307 struct nfs_fh
*fhandle
, struct nfs_fattr
*fattr
)
2311 dprintk("NFS call lookup %s\n", name
->name
);
2312 status
= _nfs4_proc_lookupfh(NFS_SERVER(dir
), NFS_FH(dir
), name
, fhandle
, fattr
);
2313 if (status
== -NFS4ERR_MOVED
)
2314 status
= nfs4_get_referral(dir
, name
, fattr
, fhandle
);
2315 dprintk("NFS reply lookup: %d\n", status
);
2319 static int nfs4_proc_lookup(struct inode
*dir
, struct qstr
*name
, struct nfs_fh
*fhandle
, struct nfs_fattr
*fattr
)
2321 struct nfs4_exception exception
= { };
2324 err
= nfs4_handle_exception(NFS_SERVER(dir
),
2325 _nfs4_proc_lookup(dir
, name
, fhandle
, fattr
),
2327 } while (exception
.retry
);
2331 static int _nfs4_proc_access(struct inode
*inode
, struct nfs_access_entry
*entry
)
2333 struct nfs_server
*server
= NFS_SERVER(inode
);
2334 struct nfs4_accessargs args
= {
2335 .fh
= NFS_FH(inode
),
2336 .bitmask
= server
->attr_bitmask
,
2338 struct nfs4_accessres res
= {
2341 struct rpc_message msg
= {
2342 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_ACCESS
],
2345 .rpc_cred
= entry
->cred
,
2347 int mode
= entry
->mask
;
2351 * Determine which access bits we want to ask for...
2353 if (mode
& MAY_READ
)
2354 args
.access
|= NFS4_ACCESS_READ
;
2355 if (S_ISDIR(inode
->i_mode
)) {
2356 if (mode
& MAY_WRITE
)
2357 args
.access
|= NFS4_ACCESS_MODIFY
| NFS4_ACCESS_EXTEND
| NFS4_ACCESS_DELETE
;
2358 if (mode
& MAY_EXEC
)
2359 args
.access
|= NFS4_ACCESS_LOOKUP
;
2361 if (mode
& MAY_WRITE
)
2362 args
.access
|= NFS4_ACCESS_MODIFY
| NFS4_ACCESS_EXTEND
;
2363 if (mode
& MAY_EXEC
)
2364 args
.access
|= NFS4_ACCESS_EXECUTE
;
2367 res
.fattr
= nfs_alloc_fattr();
2368 if (res
.fattr
== NULL
)
2371 status
= nfs4_call_sync(server
, &msg
, &args
, &res
, 0);
2374 if (res
.access
& NFS4_ACCESS_READ
)
2375 entry
->mask
|= MAY_READ
;
2376 if (res
.access
& (NFS4_ACCESS_MODIFY
| NFS4_ACCESS_EXTEND
| NFS4_ACCESS_DELETE
))
2377 entry
->mask
|= MAY_WRITE
;
2378 if (res
.access
& (NFS4_ACCESS_LOOKUP
|NFS4_ACCESS_EXECUTE
))
2379 entry
->mask
|= MAY_EXEC
;
2380 nfs_refresh_inode(inode
, res
.fattr
);
2382 nfs_free_fattr(res
.fattr
);
2386 static int nfs4_proc_access(struct inode
*inode
, struct nfs_access_entry
*entry
)
2388 struct nfs4_exception exception
= { };
2391 err
= nfs4_handle_exception(NFS_SERVER(inode
),
2392 _nfs4_proc_access(inode
, entry
),
2394 } while (exception
.retry
);
2399 * TODO: For the time being, we don't try to get any attributes
2400 * along with any of the zero-copy operations READ, READDIR,
2403 * In the case of the first three, we want to put the GETATTR
2404 * after the read-type operation -- this is because it is hard
2405 * to predict the length of a GETATTR response in v4, and thus
2406 * align the READ data correctly. This means that the GETATTR
2407 * may end up partially falling into the page cache, and we should
2408 * shift it into the 'tail' of the xdr_buf before processing.
2409 * To do this efficiently, we need to know the total length
2410 * of data received, which doesn't seem to be available outside
2413 * In the case of WRITE, we also want to put the GETATTR after
2414 * the operation -- in this case because we want to make sure
2415 * we get the post-operation mtime and size. This means that
2416 * we can't use xdr_encode_pages() as written: we need a variant
2417 * of it which would leave room in the 'tail' iovec.
2419 * Both of these changes to the XDR layer would in fact be quite
2420 * minor, but I decided to leave them for a subsequent patch.
2422 static int _nfs4_proc_readlink(struct inode
*inode
, struct page
*page
,
2423 unsigned int pgbase
, unsigned int pglen
)
2425 struct nfs4_readlink args
= {
2426 .fh
= NFS_FH(inode
),
2431 struct nfs4_readlink_res res
;
2432 struct rpc_message msg
= {
2433 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_READLINK
],
2438 return nfs4_call_sync(NFS_SERVER(inode
), &msg
, &args
, &res
, 0);
2441 static int nfs4_proc_readlink(struct inode
*inode
, struct page
*page
,
2442 unsigned int pgbase
, unsigned int pglen
)
2444 struct nfs4_exception exception
= { };
2447 err
= nfs4_handle_exception(NFS_SERVER(inode
),
2448 _nfs4_proc_readlink(inode
, page
, pgbase
, pglen
),
2450 } while (exception
.retry
);
2456 * We will need to arrange for the VFS layer to provide an atomic open.
2457 * Until then, this create/open method is prone to inefficiency and race
2458 * conditions due to the lookup, create, and open VFS calls from sys_open()
2459 * placed on the wire.
2461 * Given the above sorry state of affairs, I'm simply sending an OPEN.
2462 * The file will be opened again in the subsequent VFS open call
2463 * (nfs4_proc_file_open).
2465 * The open for read will just hang around to be used by any process that
2466 * opens the file O_RDONLY. This will all be resolved with the VFS changes.
2470 nfs4_proc_create(struct inode
*dir
, struct dentry
*dentry
, struct iattr
*sattr
,
2471 int flags
, struct nfs_open_context
*ctx
)
2473 struct path my_path
= {
2476 struct path
*path
= &my_path
;
2477 struct nfs4_state
*state
;
2478 struct rpc_cred
*cred
= NULL
;
2487 state
= nfs4_do_open(dir
, path
, fmode
, flags
, sattr
, cred
);
2489 if (IS_ERR(state
)) {
2490 status
= PTR_ERR(state
);
2493 d_add(dentry
, igrab(state
->inode
));
2494 nfs_set_verifier(dentry
, nfs_save_change_attribute(dir
));
2498 nfs4_close_sync(path
, state
, fmode
);
2503 static int _nfs4_proc_remove(struct inode
*dir
, struct qstr
*name
)
2505 struct nfs_server
*server
= NFS_SERVER(dir
);
2506 struct nfs_removeargs args
= {
2508 .name
.len
= name
->len
,
2509 .name
.name
= name
->name
,
2510 .bitmask
= server
->attr_bitmask
,
2512 struct nfs_removeres res
= {
2515 struct rpc_message msg
= {
2516 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_REMOVE
],
2520 int status
= -ENOMEM
;
2522 res
.dir_attr
= nfs_alloc_fattr();
2523 if (res
.dir_attr
== NULL
)
2526 status
= nfs4_call_sync(server
, &msg
, &args
, &res
, 1);
2528 update_changeattr(dir
, &res
.cinfo
);
2529 nfs_post_op_update_inode(dir
, res
.dir_attr
);
2531 nfs_free_fattr(res
.dir_attr
);
2536 static int nfs4_proc_remove(struct inode
*dir
, struct qstr
*name
)
2538 struct nfs4_exception exception
= { };
2541 err
= nfs4_handle_exception(NFS_SERVER(dir
),
2542 _nfs4_proc_remove(dir
, name
),
2544 } while (exception
.retry
);
2548 static void nfs4_proc_unlink_setup(struct rpc_message
*msg
, struct inode
*dir
)
2550 struct nfs_server
*server
= NFS_SERVER(dir
);
2551 struct nfs_removeargs
*args
= msg
->rpc_argp
;
2552 struct nfs_removeres
*res
= msg
->rpc_resp
;
2554 args
->bitmask
= server
->cache_consistency_bitmask
;
2555 res
->server
= server
;
2556 res
->seq_res
.sr_slot
= NULL
;
2557 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_REMOVE
];
2560 static int nfs4_proc_unlink_done(struct rpc_task
*task
, struct inode
*dir
)
2562 struct nfs_removeres
*res
= task
->tk_msg
.rpc_resp
;
2564 if (!nfs4_sequence_done(task
, &res
->seq_res
))
2566 if (nfs4_async_handle_error(task
, res
->server
, NULL
) == -EAGAIN
)
2568 update_changeattr(dir
, &res
->cinfo
);
2569 nfs_post_op_update_inode(dir
, res
->dir_attr
);
2573 static void nfs4_proc_rename_setup(struct rpc_message
*msg
, struct inode
*dir
)
2575 struct nfs_server
*server
= NFS_SERVER(dir
);
2576 struct nfs_renameargs
*arg
= msg
->rpc_argp
;
2577 struct nfs_renameres
*res
= msg
->rpc_resp
;
2579 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RENAME
];
2580 arg
->bitmask
= server
->attr_bitmask
;
2581 res
->server
= server
;
2584 static int nfs4_proc_rename_done(struct rpc_task
*task
, struct inode
*old_dir
,
2585 struct inode
*new_dir
)
2587 struct nfs_renameres
*res
= task
->tk_msg
.rpc_resp
;
2589 if (!nfs4_sequence_done(task
, &res
->seq_res
))
2591 if (nfs4_async_handle_error(task
, res
->server
, NULL
) == -EAGAIN
)
2594 update_changeattr(old_dir
, &res
->old_cinfo
);
2595 nfs_post_op_update_inode(old_dir
, res
->old_fattr
);
2596 update_changeattr(new_dir
, &res
->new_cinfo
);
2597 nfs_post_op_update_inode(new_dir
, res
->new_fattr
);
2601 static int _nfs4_proc_rename(struct inode
*old_dir
, struct qstr
*old_name
,
2602 struct inode
*new_dir
, struct qstr
*new_name
)
2604 struct nfs_server
*server
= NFS_SERVER(old_dir
);
2605 struct nfs_renameargs arg
= {
2606 .old_dir
= NFS_FH(old_dir
),
2607 .new_dir
= NFS_FH(new_dir
),
2608 .old_name
= old_name
,
2609 .new_name
= new_name
,
2610 .bitmask
= server
->attr_bitmask
,
2612 struct nfs_renameres res
= {
2615 struct rpc_message msg
= {
2616 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RENAME
],
2620 int status
= -ENOMEM
;
2622 res
.old_fattr
= nfs_alloc_fattr();
2623 res
.new_fattr
= nfs_alloc_fattr();
2624 if (res
.old_fattr
== NULL
|| res
.new_fattr
== NULL
)
2627 status
= nfs4_call_sync(server
, &msg
, &arg
, &res
, 1);
2629 update_changeattr(old_dir
, &res
.old_cinfo
);
2630 nfs_post_op_update_inode(old_dir
, res
.old_fattr
);
2631 update_changeattr(new_dir
, &res
.new_cinfo
);
2632 nfs_post_op_update_inode(new_dir
, res
.new_fattr
);
2635 nfs_free_fattr(res
.new_fattr
);
2636 nfs_free_fattr(res
.old_fattr
);
2640 static int nfs4_proc_rename(struct inode
*old_dir
, struct qstr
*old_name
,
2641 struct inode
*new_dir
, struct qstr
*new_name
)
2643 struct nfs4_exception exception
= { };
2646 err
= nfs4_handle_exception(NFS_SERVER(old_dir
),
2647 _nfs4_proc_rename(old_dir
, old_name
,
2650 } while (exception
.retry
);
2654 static int _nfs4_proc_link(struct inode
*inode
, struct inode
*dir
, struct qstr
*name
)
2656 struct nfs_server
*server
= NFS_SERVER(inode
);
2657 struct nfs4_link_arg arg
= {
2658 .fh
= NFS_FH(inode
),
2659 .dir_fh
= NFS_FH(dir
),
2661 .bitmask
= server
->attr_bitmask
,
2663 struct nfs4_link_res res
= {
2666 struct rpc_message msg
= {
2667 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LINK
],
2671 int status
= -ENOMEM
;
2673 res
.fattr
= nfs_alloc_fattr();
2674 res
.dir_attr
= nfs_alloc_fattr();
2675 if (res
.fattr
== NULL
|| res
.dir_attr
== NULL
)
2678 status
= nfs4_call_sync(server
, &msg
, &arg
, &res
, 1);
2680 update_changeattr(dir
, &res
.cinfo
);
2681 nfs_post_op_update_inode(dir
, res
.dir_attr
);
2682 nfs_post_op_update_inode(inode
, res
.fattr
);
2685 nfs_free_fattr(res
.dir_attr
);
2686 nfs_free_fattr(res
.fattr
);
2690 static int nfs4_proc_link(struct inode
*inode
, struct inode
*dir
, struct qstr
*name
)
2692 struct nfs4_exception exception
= { };
2695 err
= nfs4_handle_exception(NFS_SERVER(inode
),
2696 _nfs4_proc_link(inode
, dir
, name
),
2698 } while (exception
.retry
);
2702 struct nfs4_createdata
{
2703 struct rpc_message msg
;
2704 struct nfs4_create_arg arg
;
2705 struct nfs4_create_res res
;
2707 struct nfs_fattr fattr
;
2708 struct nfs_fattr dir_fattr
;
2711 static struct nfs4_createdata
*nfs4_alloc_createdata(struct inode
*dir
,
2712 struct qstr
*name
, struct iattr
*sattr
, u32 ftype
)
2714 struct nfs4_createdata
*data
;
2716 data
= kzalloc(sizeof(*data
), GFP_KERNEL
);
2718 struct nfs_server
*server
= NFS_SERVER(dir
);
2720 data
->msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_CREATE
];
2721 data
->msg
.rpc_argp
= &data
->arg
;
2722 data
->msg
.rpc_resp
= &data
->res
;
2723 data
->arg
.dir_fh
= NFS_FH(dir
);
2724 data
->arg
.server
= server
;
2725 data
->arg
.name
= name
;
2726 data
->arg
.attrs
= sattr
;
2727 data
->arg
.ftype
= ftype
;
2728 data
->arg
.bitmask
= server
->attr_bitmask
;
2729 data
->res
.server
= server
;
2730 data
->res
.fh
= &data
->fh
;
2731 data
->res
.fattr
= &data
->fattr
;
2732 data
->res
.dir_fattr
= &data
->dir_fattr
;
2733 nfs_fattr_init(data
->res
.fattr
);
2734 nfs_fattr_init(data
->res
.dir_fattr
);
2739 static int nfs4_do_create(struct inode
*dir
, struct dentry
*dentry
, struct nfs4_createdata
*data
)
2741 int status
= nfs4_call_sync(NFS_SERVER(dir
), &data
->msg
,
2742 &data
->arg
, &data
->res
, 1);
2744 update_changeattr(dir
, &data
->res
.dir_cinfo
);
2745 nfs_post_op_update_inode(dir
, data
->res
.dir_fattr
);
2746 status
= nfs_instantiate(dentry
, data
->res
.fh
, data
->res
.fattr
);
2751 static void nfs4_free_createdata(struct nfs4_createdata
*data
)
2756 static int _nfs4_proc_symlink(struct inode
*dir
, struct dentry
*dentry
,
2757 struct page
*page
, unsigned int len
, struct iattr
*sattr
)
2759 struct nfs4_createdata
*data
;
2760 int status
= -ENAMETOOLONG
;
2762 if (len
> NFS4_MAXPATHLEN
)
2766 data
= nfs4_alloc_createdata(dir
, &dentry
->d_name
, sattr
, NF4LNK
);
2770 data
->msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SYMLINK
];
2771 data
->arg
.u
.symlink
.pages
= &page
;
2772 data
->arg
.u
.symlink
.len
= len
;
2774 status
= nfs4_do_create(dir
, dentry
, data
);
2776 nfs4_free_createdata(data
);
2781 static int nfs4_proc_symlink(struct inode
*dir
, struct dentry
*dentry
,
2782 struct page
*page
, unsigned int len
, struct iattr
*sattr
)
2784 struct nfs4_exception exception
= { };
2787 err
= nfs4_handle_exception(NFS_SERVER(dir
),
2788 _nfs4_proc_symlink(dir
, dentry
, page
,
2791 } while (exception
.retry
);
2795 static int _nfs4_proc_mkdir(struct inode
*dir
, struct dentry
*dentry
,
2796 struct iattr
*sattr
)
2798 struct nfs4_createdata
*data
;
2799 int status
= -ENOMEM
;
2801 data
= nfs4_alloc_createdata(dir
, &dentry
->d_name
, sattr
, NF4DIR
);
2805 status
= nfs4_do_create(dir
, dentry
, data
);
2807 nfs4_free_createdata(data
);
2812 static int nfs4_proc_mkdir(struct inode
*dir
, struct dentry
*dentry
,
2813 struct iattr
*sattr
)
2815 struct nfs4_exception exception
= { };
2818 err
= nfs4_handle_exception(NFS_SERVER(dir
),
2819 _nfs4_proc_mkdir(dir
, dentry
, sattr
),
2821 } while (exception
.retry
);
2825 static int _nfs4_proc_readdir(struct dentry
*dentry
, struct rpc_cred
*cred
,
2826 u64 cookie
, struct page
**pages
, unsigned int count
, int plus
)
2828 struct inode
*dir
= dentry
->d_inode
;
2829 struct nfs4_readdir_arg args
= {
2834 .bitmask
= NFS_SERVER(dentry
->d_inode
)->attr_bitmask
,
2837 struct nfs4_readdir_res res
;
2838 struct rpc_message msg
= {
2839 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_READDIR
],
2846 dprintk("%s: dentry = %s/%s, cookie = %Lu\n", __func__
,
2847 dentry
->d_parent
->d_name
.name
,
2848 dentry
->d_name
.name
,
2849 (unsigned long long)cookie
);
2850 nfs4_setup_readdir(cookie
, NFS_COOKIEVERF(dir
), dentry
, &args
);
2851 res
.pgbase
= args
.pgbase
;
2852 status
= nfs4_call_sync(NFS_SERVER(dir
), &msg
, &args
, &res
, 0);
2854 memcpy(NFS_COOKIEVERF(dir
), res
.verifier
.data
, NFS4_VERIFIER_SIZE
);
2856 nfs_invalidate_atime(dir
);
2858 dprintk("%s: returns %d\n", __func__
, status
);
2862 static int nfs4_proc_readdir(struct dentry
*dentry
, struct rpc_cred
*cred
,
2863 u64 cookie
, struct page
**pages
, unsigned int count
, int plus
)
2865 struct nfs4_exception exception
= { };
2868 err
= nfs4_handle_exception(NFS_SERVER(dentry
->d_inode
),
2869 _nfs4_proc_readdir(dentry
, cred
, cookie
,
2870 pages
, count
, plus
),
2872 } while (exception
.retry
);
2876 static int _nfs4_proc_mknod(struct inode
*dir
, struct dentry
*dentry
,
2877 struct iattr
*sattr
, dev_t rdev
)
2879 struct nfs4_createdata
*data
;
2880 int mode
= sattr
->ia_mode
;
2881 int status
= -ENOMEM
;
2883 BUG_ON(!(sattr
->ia_valid
& ATTR_MODE
));
2884 BUG_ON(!S_ISFIFO(mode
) && !S_ISBLK(mode
) && !S_ISCHR(mode
) && !S_ISSOCK(mode
));
2886 data
= nfs4_alloc_createdata(dir
, &dentry
->d_name
, sattr
, NF4SOCK
);
2891 data
->arg
.ftype
= NF4FIFO
;
2892 else if (S_ISBLK(mode
)) {
2893 data
->arg
.ftype
= NF4BLK
;
2894 data
->arg
.u
.device
.specdata1
= MAJOR(rdev
);
2895 data
->arg
.u
.device
.specdata2
= MINOR(rdev
);
2897 else if (S_ISCHR(mode
)) {
2898 data
->arg
.ftype
= NF4CHR
;
2899 data
->arg
.u
.device
.specdata1
= MAJOR(rdev
);
2900 data
->arg
.u
.device
.specdata2
= MINOR(rdev
);
2903 status
= nfs4_do_create(dir
, dentry
, data
);
2905 nfs4_free_createdata(data
);
2910 static int nfs4_proc_mknod(struct inode
*dir
, struct dentry
*dentry
,
2911 struct iattr
*sattr
, dev_t rdev
)
2913 struct nfs4_exception exception
= { };
2916 err
= nfs4_handle_exception(NFS_SERVER(dir
),
2917 _nfs4_proc_mknod(dir
, dentry
, sattr
, rdev
),
2919 } while (exception
.retry
);
2923 static int _nfs4_proc_statfs(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
2924 struct nfs_fsstat
*fsstat
)
2926 struct nfs4_statfs_arg args
= {
2928 .bitmask
= server
->attr_bitmask
,
2930 struct nfs4_statfs_res res
= {
2933 struct rpc_message msg
= {
2934 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_STATFS
],
2939 nfs_fattr_init(fsstat
->fattr
);
2940 return nfs4_call_sync(server
, &msg
, &args
, &res
, 0);
2943 static int nfs4_proc_statfs(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fsstat
*fsstat
)
2945 struct nfs4_exception exception
= { };
2948 err
= nfs4_handle_exception(server
,
2949 _nfs4_proc_statfs(server
, fhandle
, fsstat
),
2951 } while (exception
.retry
);
2955 static int _nfs4_do_fsinfo(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
2956 struct nfs_fsinfo
*fsinfo
)
2958 struct nfs4_fsinfo_arg args
= {
2960 .bitmask
= server
->attr_bitmask
,
2962 struct nfs4_fsinfo_res res
= {
2965 struct rpc_message msg
= {
2966 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_FSINFO
],
2971 return nfs4_call_sync(server
, &msg
, &args
, &res
, 0);
2974 static int nfs4_do_fsinfo(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fsinfo
*fsinfo
)
2976 struct nfs4_exception exception
= { };
2980 err
= nfs4_handle_exception(server
,
2981 _nfs4_do_fsinfo(server
, fhandle
, fsinfo
),
2983 } while (exception
.retry
);
2987 static int nfs4_proc_fsinfo(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fsinfo
*fsinfo
)
2989 nfs_fattr_init(fsinfo
->fattr
);
2990 return nfs4_do_fsinfo(server
, fhandle
, fsinfo
);
2993 static int _nfs4_proc_pathconf(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
2994 struct nfs_pathconf
*pathconf
)
2996 struct nfs4_pathconf_arg args
= {
2998 .bitmask
= server
->attr_bitmask
,
3000 struct nfs4_pathconf_res res
= {
3001 .pathconf
= pathconf
,
3003 struct rpc_message msg
= {
3004 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_PATHCONF
],
3009 /* None of the pathconf attributes are mandatory to implement */
3010 if ((args
.bitmask
[0] & nfs4_pathconf_bitmap
[0]) == 0) {
3011 memset(pathconf
, 0, sizeof(*pathconf
));
3015 nfs_fattr_init(pathconf
->fattr
);
3016 return nfs4_call_sync(server
, &msg
, &args
, &res
, 0);
3019 static int nfs4_proc_pathconf(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
3020 struct nfs_pathconf
*pathconf
)
3022 struct nfs4_exception exception
= { };
3026 err
= nfs4_handle_exception(server
,
3027 _nfs4_proc_pathconf(server
, fhandle
, pathconf
),
3029 } while (exception
.retry
);
3033 static int nfs4_read_done(struct rpc_task
*task
, struct nfs_read_data
*data
)
3035 struct nfs_server
*server
= NFS_SERVER(data
->inode
);
3037 dprintk("--> %s\n", __func__
);
3039 if (!nfs4_sequence_done(task
, &data
->res
.seq_res
))
3042 if (nfs4_async_handle_error(task
, server
, data
->args
.context
->state
) == -EAGAIN
) {
3043 nfs_restart_rpc(task
, server
->nfs_client
);
3047 nfs_invalidate_atime(data
->inode
);
3048 if (task
->tk_status
> 0)
3049 renew_lease(server
, data
->timestamp
);
3053 static void nfs4_proc_read_setup(struct nfs_read_data
*data
, struct rpc_message
*msg
)
3055 data
->timestamp
= jiffies
;
3056 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_READ
];
3059 static int nfs4_write_done(struct rpc_task
*task
, struct nfs_write_data
*data
)
3061 struct inode
*inode
= data
->inode
;
3063 if (!nfs4_sequence_done(task
, &data
->res
.seq_res
))
3066 if (nfs4_async_handle_error(task
, NFS_SERVER(inode
), data
->args
.context
->state
) == -EAGAIN
) {
3067 nfs_restart_rpc(task
, NFS_SERVER(inode
)->nfs_client
);
3070 if (task
->tk_status
>= 0) {
3071 renew_lease(NFS_SERVER(inode
), data
->timestamp
);
3072 nfs_post_op_update_inode_force_wcc(inode
, data
->res
.fattr
);
3077 static void nfs4_proc_write_setup(struct nfs_write_data
*data
, struct rpc_message
*msg
)
3079 struct nfs_server
*server
= NFS_SERVER(data
->inode
);
3081 data
->args
.bitmask
= server
->cache_consistency_bitmask
;
3082 data
->res
.server
= server
;
3083 data
->timestamp
= jiffies
;
3085 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_WRITE
];
3088 static int nfs4_commit_done(struct rpc_task
*task
, struct nfs_write_data
*data
)
3090 struct inode
*inode
= data
->inode
;
3092 if (!nfs4_sequence_done(task
, &data
->res
.seq_res
))
3095 if (nfs4_async_handle_error(task
, NFS_SERVER(inode
), NULL
) == -EAGAIN
) {
3096 nfs_restart_rpc(task
, NFS_SERVER(inode
)->nfs_client
);
3099 nfs_refresh_inode(inode
, data
->res
.fattr
);
3103 static void nfs4_proc_commit_setup(struct nfs_write_data
*data
, struct rpc_message
*msg
)
3105 struct nfs_server
*server
= NFS_SERVER(data
->inode
);
3107 data
->args
.bitmask
= server
->cache_consistency_bitmask
;
3108 data
->res
.server
= server
;
3109 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_COMMIT
];
3112 struct nfs4_renewdata
{
3113 struct nfs_client
*client
;
3114 unsigned long timestamp
;
3118 * nfs4_proc_async_renew(): This is not one of the nfs_rpc_ops; it is a special
3119 * standalone procedure for queueing an asynchronous RENEW.
3121 static void nfs4_renew_release(void *calldata
)
3123 struct nfs4_renewdata
*data
= calldata
;
3124 struct nfs_client
*clp
= data
->client
;
3126 if (atomic_read(&clp
->cl_count
) > 1)
3127 nfs4_schedule_state_renewal(clp
);
3128 nfs_put_client(clp
);
3132 static void nfs4_renew_done(struct rpc_task
*task
, void *calldata
)
3134 struct nfs4_renewdata
*data
= calldata
;
3135 struct nfs_client
*clp
= data
->client
;
3136 unsigned long timestamp
= data
->timestamp
;
3138 if (task
->tk_status
< 0) {
3139 /* Unless we're shutting down, schedule state recovery! */
3140 if (test_bit(NFS_CS_RENEWD
, &clp
->cl_res_state
) != 0)
3141 nfs4_schedule_state_recovery(clp
);
3144 do_renew_lease(clp
, timestamp
);
3147 static const struct rpc_call_ops nfs4_renew_ops
= {
3148 .rpc_call_done
= nfs4_renew_done
,
3149 .rpc_release
= nfs4_renew_release
,
3152 int nfs4_proc_async_renew(struct nfs_client
*clp
, struct rpc_cred
*cred
)
3154 struct rpc_message msg
= {
3155 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RENEW
],
3159 struct nfs4_renewdata
*data
;
3161 if (!atomic_inc_not_zero(&clp
->cl_count
))
3163 data
= kmalloc(sizeof(*data
), GFP_KERNEL
);
3167 data
->timestamp
= jiffies
;
3168 return rpc_call_async(clp
->cl_rpcclient
, &msg
, RPC_TASK_SOFT
,
3169 &nfs4_renew_ops
, data
);
3172 int nfs4_proc_renew(struct nfs_client
*clp
, struct rpc_cred
*cred
)
3174 struct rpc_message msg
= {
3175 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RENEW
],
3179 unsigned long now
= jiffies
;
3182 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, 0);
3185 do_renew_lease(clp
, now
);
3189 static inline int nfs4_server_supports_acls(struct nfs_server
*server
)
3191 return (server
->caps
& NFS_CAP_ACLS
)
3192 && (server
->acl_bitmask
& ACL4_SUPPORT_ALLOW_ACL
)
3193 && (server
->acl_bitmask
& ACL4_SUPPORT_DENY_ACL
);
3196 /* Assuming that XATTR_SIZE_MAX is a multiple of PAGE_CACHE_SIZE, and that
3197 * it's OK to put sizeof(void) * (XATTR_SIZE_MAX/PAGE_CACHE_SIZE) bytes on
3200 #define NFS4ACL_MAXPAGES (XATTR_SIZE_MAX >> PAGE_CACHE_SHIFT)
3202 static void buf_to_pages(const void *buf
, size_t buflen
,
3203 struct page
**pages
, unsigned int *pgbase
)
3205 const void *p
= buf
;
3207 *pgbase
= offset_in_page(buf
);
3209 while (p
< buf
+ buflen
) {
3210 *(pages
++) = virt_to_page(p
);
3211 p
+= PAGE_CACHE_SIZE
;
3215 struct nfs4_cached_acl
{
3221 static void nfs4_set_cached_acl(struct inode
*inode
, struct nfs4_cached_acl
*acl
)
3223 struct nfs_inode
*nfsi
= NFS_I(inode
);
3225 spin_lock(&inode
->i_lock
);
3226 kfree(nfsi
->nfs4_acl
);
3227 nfsi
->nfs4_acl
= acl
;
3228 spin_unlock(&inode
->i_lock
);
3231 static void nfs4_zap_acl_attr(struct inode
*inode
)
3233 nfs4_set_cached_acl(inode
, NULL
);
3236 static inline ssize_t
nfs4_read_cached_acl(struct inode
*inode
, char *buf
, size_t buflen
)
3238 struct nfs_inode
*nfsi
= NFS_I(inode
);
3239 struct nfs4_cached_acl
*acl
;
3242 spin_lock(&inode
->i_lock
);
3243 acl
= nfsi
->nfs4_acl
;
3246 if (buf
== NULL
) /* user is just asking for length */
3248 if (acl
->cached
== 0)
3250 ret
= -ERANGE
; /* see getxattr(2) man page */
3251 if (acl
->len
> buflen
)
3253 memcpy(buf
, acl
->data
, acl
->len
);
3257 spin_unlock(&inode
->i_lock
);
3261 static void nfs4_write_cached_acl(struct inode
*inode
, const char *buf
, size_t acl_len
)
3263 struct nfs4_cached_acl
*acl
;
3265 if (buf
&& acl_len
<= PAGE_SIZE
) {
3266 acl
= kmalloc(sizeof(*acl
) + acl_len
, GFP_KERNEL
);
3270 memcpy(acl
->data
, buf
, acl_len
);
3272 acl
= kmalloc(sizeof(*acl
), GFP_KERNEL
);
3279 nfs4_set_cached_acl(inode
, acl
);
3282 static ssize_t
__nfs4_get_acl_uncached(struct inode
*inode
, void *buf
, size_t buflen
)
3284 struct page
*pages
[NFS4ACL_MAXPAGES
];
3285 struct nfs_getaclargs args
= {
3286 .fh
= NFS_FH(inode
),
3290 struct nfs_getaclres res
= {
3294 struct rpc_message msg
= {
3295 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GETACL
],
3299 struct page
*localpage
= NULL
;
3302 if (buflen
< PAGE_SIZE
) {
3303 /* As long as we're doing a round trip to the server anyway,
3304 * let's be prepared for a page of acl data. */
3305 localpage
= alloc_page(GFP_KERNEL
);
3306 resp_buf
= page_address(localpage
);
3307 if (localpage
== NULL
)
3309 args
.acl_pages
[0] = localpage
;
3310 args
.acl_pgbase
= 0;
3311 args
.acl_len
= PAGE_SIZE
;
3314 buf_to_pages(buf
, buflen
, args
.acl_pages
, &args
.acl_pgbase
);
3316 ret
= nfs4_call_sync(NFS_SERVER(inode
), &msg
, &args
, &res
, 0);
3319 if (res
.acl_len
> args
.acl_len
)
3320 nfs4_write_cached_acl(inode
, NULL
, res
.acl_len
);
3322 nfs4_write_cached_acl(inode
, resp_buf
, res
.acl_len
);
3325 if (res
.acl_len
> buflen
)
3328 memcpy(buf
, resp_buf
, res
.acl_len
);
3333 __free_page(localpage
);
3337 static ssize_t
nfs4_get_acl_uncached(struct inode
*inode
, void *buf
, size_t buflen
)
3339 struct nfs4_exception exception
= { };
3342 ret
= __nfs4_get_acl_uncached(inode
, buf
, buflen
);
3345 ret
= nfs4_handle_exception(NFS_SERVER(inode
), ret
, &exception
);
3346 } while (exception
.retry
);
3350 static ssize_t
nfs4_proc_get_acl(struct inode
*inode
, void *buf
, size_t buflen
)
3352 struct nfs_server
*server
= NFS_SERVER(inode
);
3355 if (!nfs4_server_supports_acls(server
))
3357 ret
= nfs_revalidate_inode(server
, inode
);
3360 ret
= nfs4_read_cached_acl(inode
, buf
, buflen
);
3363 return nfs4_get_acl_uncached(inode
, buf
, buflen
);
3366 static int __nfs4_proc_set_acl(struct inode
*inode
, const void *buf
, size_t buflen
)
3368 struct nfs_server
*server
= NFS_SERVER(inode
);
3369 struct page
*pages
[NFS4ACL_MAXPAGES
];
3370 struct nfs_setaclargs arg
= {
3371 .fh
= NFS_FH(inode
),
3375 struct nfs_setaclres res
;
3376 struct rpc_message msg
= {
3377 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETACL
],
3383 if (!nfs4_server_supports_acls(server
))
3385 nfs_inode_return_delegation(inode
);
3386 buf_to_pages(buf
, buflen
, arg
.acl_pages
, &arg
.acl_pgbase
);
3387 ret
= nfs4_call_sync(server
, &msg
, &arg
, &res
, 1);
3388 nfs_access_zap_cache(inode
);
3389 nfs_zap_acl_cache(inode
);
3393 static int nfs4_proc_set_acl(struct inode
*inode
, const void *buf
, size_t buflen
)
3395 struct nfs4_exception exception
= { };
3398 err
= nfs4_handle_exception(NFS_SERVER(inode
),
3399 __nfs4_proc_set_acl(inode
, buf
, buflen
),
3401 } while (exception
.retry
);
3406 nfs4_async_handle_error(struct rpc_task
*task
, const struct nfs_server
*server
, struct nfs4_state
*state
)
3408 struct nfs_client
*clp
= server
->nfs_client
;
3410 if (task
->tk_status
>= 0)
3412 switch(task
->tk_status
) {
3413 case -NFS4ERR_ADMIN_REVOKED
:
3414 case -NFS4ERR_BAD_STATEID
:
3415 case -NFS4ERR_OPENMODE
:
3418 nfs4_state_mark_reclaim_nograce(clp
, state
);
3419 goto do_state_recovery
;
3420 case -NFS4ERR_STALE_STATEID
:
3421 case -NFS4ERR_STALE_CLIENTID
:
3422 case -NFS4ERR_EXPIRED
:
3423 goto do_state_recovery
;
3424 #if defined(CONFIG_NFS_V4_1)
3425 case -NFS4ERR_BADSESSION
:
3426 case -NFS4ERR_BADSLOT
:
3427 case -NFS4ERR_BAD_HIGH_SLOT
:
3428 case -NFS4ERR_DEADSESSION
:
3429 case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION
:
3430 case -NFS4ERR_SEQ_FALSE_RETRY
:
3431 case -NFS4ERR_SEQ_MISORDERED
:
3432 dprintk("%s ERROR %d, Reset session\n", __func__
,
3434 nfs4_schedule_state_recovery(clp
);
3435 task
->tk_status
= 0;
3437 #endif /* CONFIG_NFS_V4_1 */
3438 case -NFS4ERR_DELAY
:
3439 nfs_inc_server_stats(server
, NFSIOS_DELAY
);
3440 case -NFS4ERR_GRACE
:
3442 rpc_delay(task
, NFS4_POLL_RETRY_MAX
);
3443 task
->tk_status
= 0;
3445 case -NFS4ERR_OLD_STATEID
:
3446 task
->tk_status
= 0;
3449 task
->tk_status
= nfs4_map_errors(task
->tk_status
);
3452 rpc_sleep_on(&clp
->cl_rpcwaitq
, task
, NULL
);
3453 nfs4_schedule_state_recovery(clp
);
3454 if (test_bit(NFS4CLNT_MANAGER_RUNNING
, &clp
->cl_state
) == 0)
3455 rpc_wake_up_queued_task(&clp
->cl_rpcwaitq
, task
);
3456 task
->tk_status
= 0;
3460 int nfs4_proc_setclientid(struct nfs_client
*clp
, u32 program
,
3461 unsigned short port
, struct rpc_cred
*cred
,
3462 struct nfs4_setclientid_res
*res
)
3464 nfs4_verifier sc_verifier
;
3465 struct nfs4_setclientid setclientid
= {
3466 .sc_verifier
= &sc_verifier
,
3469 struct rpc_message msg
= {
3470 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETCLIENTID
],
3471 .rpc_argp
= &setclientid
,
3479 p
= (__be32
*)sc_verifier
.data
;
3480 *p
++ = htonl((u32
)clp
->cl_boot_time
.tv_sec
);
3481 *p
= htonl((u32
)clp
->cl_boot_time
.tv_nsec
);
3484 setclientid
.sc_name_len
= scnprintf(setclientid
.sc_name
,
3485 sizeof(setclientid
.sc_name
), "%s/%s %s %s %u",
3487 rpc_peeraddr2str(clp
->cl_rpcclient
,
3489 rpc_peeraddr2str(clp
->cl_rpcclient
,
3491 clp
->cl_rpcclient
->cl_auth
->au_ops
->au_name
,
3492 clp
->cl_id_uniquifier
);
3493 setclientid
.sc_netid_len
= scnprintf(setclientid
.sc_netid
,
3494 sizeof(setclientid
.sc_netid
),
3495 rpc_peeraddr2str(clp
->cl_rpcclient
,
3496 RPC_DISPLAY_NETID
));
3497 setclientid
.sc_uaddr_len
= scnprintf(setclientid
.sc_uaddr
,
3498 sizeof(setclientid
.sc_uaddr
), "%s.%u.%u",
3499 clp
->cl_ipaddr
, port
>> 8, port
& 255);
3501 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, 0);
3502 if (status
!= -NFS4ERR_CLID_INUSE
)
3507 ssleep(clp
->cl_lease_time
+ 1);
3509 if (++clp
->cl_id_uniquifier
== 0)
3515 static int _nfs4_proc_setclientid_confirm(struct nfs_client
*clp
,
3516 struct nfs4_setclientid_res
*arg
,
3517 struct rpc_cred
*cred
)
3519 struct nfs_fsinfo fsinfo
;
3520 struct rpc_message msg
= {
3521 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETCLIENTID_CONFIRM
],
3523 .rpc_resp
= &fsinfo
,
3530 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, 0);
3532 spin_lock(&clp
->cl_lock
);
3533 clp
->cl_lease_time
= fsinfo
.lease_time
* HZ
;
3534 clp
->cl_last_renewal
= now
;
3535 spin_unlock(&clp
->cl_lock
);
3540 int nfs4_proc_setclientid_confirm(struct nfs_client
*clp
,
3541 struct nfs4_setclientid_res
*arg
,
3542 struct rpc_cred
*cred
)
3547 err
= _nfs4_proc_setclientid_confirm(clp
, arg
, cred
);
3551 case -NFS4ERR_RESOURCE
:
3552 /* The IBM lawyers misread another document! */
3553 case -NFS4ERR_DELAY
:
3554 err
= nfs4_delay(clp
->cl_rpcclient
, &timeout
);
3560 struct nfs4_delegreturndata
{
3561 struct nfs4_delegreturnargs args
;
3562 struct nfs4_delegreturnres res
;
3564 nfs4_stateid stateid
;
3565 unsigned long timestamp
;
3566 struct nfs_fattr fattr
;
3570 static void nfs4_delegreturn_done(struct rpc_task
*task
, void *calldata
)
3572 struct nfs4_delegreturndata
*data
= calldata
;
3574 if (!nfs4_sequence_done(task
, &data
->res
.seq_res
))
3577 switch (task
->tk_status
) {
3578 case -NFS4ERR_STALE_STATEID
:
3579 case -NFS4ERR_EXPIRED
:
3581 renew_lease(data
->res
.server
, data
->timestamp
);
3584 if (nfs4_async_handle_error(task
, data
->res
.server
, NULL
) ==
3586 nfs_restart_rpc(task
, data
->res
.server
->nfs_client
);
3590 data
->rpc_status
= task
->tk_status
;
3593 static void nfs4_delegreturn_release(void *calldata
)
3598 #if defined(CONFIG_NFS_V4_1)
3599 static void nfs4_delegreturn_prepare(struct rpc_task
*task
, void *data
)
3601 struct nfs4_delegreturndata
*d_data
;
3603 d_data
= (struct nfs4_delegreturndata
*)data
;
3605 if (nfs4_setup_sequence(d_data
->res
.server
,
3606 &d_data
->args
.seq_args
,
3607 &d_data
->res
.seq_res
, 1, task
))
3609 rpc_call_start(task
);
3611 #endif /* CONFIG_NFS_V4_1 */
3613 static const struct rpc_call_ops nfs4_delegreturn_ops
= {
3614 #if defined(CONFIG_NFS_V4_1)
3615 .rpc_call_prepare
= nfs4_delegreturn_prepare
,
3616 #endif /* CONFIG_NFS_V4_1 */
3617 .rpc_call_done
= nfs4_delegreturn_done
,
3618 .rpc_release
= nfs4_delegreturn_release
,
3621 static int _nfs4_proc_delegreturn(struct inode
*inode
, struct rpc_cred
*cred
, const nfs4_stateid
*stateid
, int issync
)
3623 struct nfs4_delegreturndata
*data
;
3624 struct nfs_server
*server
= NFS_SERVER(inode
);
3625 struct rpc_task
*task
;
3626 struct rpc_message msg
= {
3627 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_DELEGRETURN
],
3630 struct rpc_task_setup task_setup_data
= {
3631 .rpc_client
= server
->client
,
3632 .rpc_message
= &msg
,
3633 .callback_ops
= &nfs4_delegreturn_ops
,
3634 .flags
= RPC_TASK_ASYNC
,
3638 data
= kzalloc(sizeof(*data
), GFP_NOFS
);
3641 data
->args
.fhandle
= &data
->fh
;
3642 data
->args
.stateid
= &data
->stateid
;
3643 data
->args
.bitmask
= server
->attr_bitmask
;
3644 nfs_copy_fh(&data
->fh
, NFS_FH(inode
));
3645 memcpy(&data
->stateid
, stateid
, sizeof(data
->stateid
));
3646 data
->res
.fattr
= &data
->fattr
;
3647 data
->res
.server
= server
;
3648 nfs_fattr_init(data
->res
.fattr
);
3649 data
->timestamp
= jiffies
;
3650 data
->rpc_status
= 0;
3652 task_setup_data
.callback_data
= data
;
3653 msg
.rpc_argp
= &data
->args
,
3654 msg
.rpc_resp
= &data
->res
,
3655 task
= rpc_run_task(&task_setup_data
);
3657 return PTR_ERR(task
);
3660 status
= nfs4_wait_for_completion_rpc_task(task
);
3663 status
= data
->rpc_status
;
3666 nfs_refresh_inode(inode
, &data
->fattr
);
3672 int nfs4_proc_delegreturn(struct inode
*inode
, struct rpc_cred
*cred
, const nfs4_stateid
*stateid
, int issync
)
3674 struct nfs_server
*server
= NFS_SERVER(inode
);
3675 struct nfs4_exception exception
= { };
3678 err
= _nfs4_proc_delegreturn(inode
, cred
, stateid
, issync
);
3680 case -NFS4ERR_STALE_STATEID
:
3681 case -NFS4ERR_EXPIRED
:
3685 err
= nfs4_handle_exception(server
, err
, &exception
);
3686 } while (exception
.retry
);
3690 #define NFS4_LOCK_MINTIMEOUT (1 * HZ)
3691 #define NFS4_LOCK_MAXTIMEOUT (30 * HZ)
3694 * sleep, with exponential backoff, and retry the LOCK operation.
3696 static unsigned long
3697 nfs4_set_lock_task_retry(unsigned long timeout
)
3699 schedule_timeout_killable(timeout
);
3701 if (timeout
> NFS4_LOCK_MAXTIMEOUT
)
3702 return NFS4_LOCK_MAXTIMEOUT
;
3706 static int _nfs4_proc_getlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
3708 struct inode
*inode
= state
->inode
;
3709 struct nfs_server
*server
= NFS_SERVER(inode
);
3710 struct nfs_client
*clp
= server
->nfs_client
;
3711 struct nfs_lockt_args arg
= {
3712 .fh
= NFS_FH(inode
),
3715 struct nfs_lockt_res res
= {
3718 struct rpc_message msg
= {
3719 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOCKT
],
3722 .rpc_cred
= state
->owner
->so_cred
,
3724 struct nfs4_lock_state
*lsp
;
3727 arg
.lock_owner
.clientid
= clp
->cl_clientid
;
3728 status
= nfs4_set_lock_state(state
, request
);
3731 lsp
= request
->fl_u
.nfs4_fl
.owner
;
3732 arg
.lock_owner
.id
= lsp
->ls_id
.id
;
3733 status
= nfs4_call_sync(server
, &msg
, &arg
, &res
, 1);
3736 request
->fl_type
= F_UNLCK
;
3738 case -NFS4ERR_DENIED
:
3741 request
->fl_ops
->fl_release_private(request
);
3746 static int nfs4_proc_getlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
3748 struct nfs4_exception exception
= { };
3752 err
= nfs4_handle_exception(NFS_SERVER(state
->inode
),
3753 _nfs4_proc_getlk(state
, cmd
, request
),
3755 } while (exception
.retry
);
3759 static int do_vfs_lock(struct file
*file
, struct file_lock
*fl
)
3762 switch (fl
->fl_flags
& (FL_POSIX
|FL_FLOCK
)) {
3764 res
= posix_lock_file_wait(file
, fl
);
3767 res
= flock_lock_file_wait(file
, fl
);
3775 struct nfs4_unlockdata
{
3776 struct nfs_locku_args arg
;
3777 struct nfs_locku_res res
;
3778 struct nfs4_lock_state
*lsp
;
3779 struct nfs_open_context
*ctx
;
3780 struct file_lock fl
;
3781 const struct nfs_server
*server
;
3782 unsigned long timestamp
;
3785 static struct nfs4_unlockdata
*nfs4_alloc_unlockdata(struct file_lock
*fl
,
3786 struct nfs_open_context
*ctx
,
3787 struct nfs4_lock_state
*lsp
,
3788 struct nfs_seqid
*seqid
)
3790 struct nfs4_unlockdata
*p
;
3791 struct inode
*inode
= lsp
->ls_state
->inode
;
3793 p
= kzalloc(sizeof(*p
), GFP_NOFS
);
3796 p
->arg
.fh
= NFS_FH(inode
);
3798 p
->arg
.seqid
= seqid
;
3799 p
->res
.seqid
= seqid
;
3800 p
->arg
.stateid
= &lsp
->ls_stateid
;
3802 atomic_inc(&lsp
->ls_count
);
3803 /* Ensure we don't close file until we're done freeing locks! */
3804 p
->ctx
= get_nfs_open_context(ctx
);
3805 memcpy(&p
->fl
, fl
, sizeof(p
->fl
));
3806 p
->server
= NFS_SERVER(inode
);
3810 static void nfs4_locku_release_calldata(void *data
)
3812 struct nfs4_unlockdata
*calldata
= data
;
3813 nfs_free_seqid(calldata
->arg
.seqid
);
3814 nfs4_put_lock_state(calldata
->lsp
);
3815 put_nfs_open_context(calldata
->ctx
);
3819 static void nfs4_locku_done(struct rpc_task
*task
, void *data
)
3821 struct nfs4_unlockdata
*calldata
= data
;
3823 if (!nfs4_sequence_done(task
, &calldata
->res
.seq_res
))
3825 switch (task
->tk_status
) {
3827 memcpy(calldata
->lsp
->ls_stateid
.data
,
3828 calldata
->res
.stateid
.data
,
3829 sizeof(calldata
->lsp
->ls_stateid
.data
));
3830 renew_lease(calldata
->server
, calldata
->timestamp
);
3832 case -NFS4ERR_BAD_STATEID
:
3833 case -NFS4ERR_OLD_STATEID
:
3834 case -NFS4ERR_STALE_STATEID
:
3835 case -NFS4ERR_EXPIRED
:
3838 if (nfs4_async_handle_error(task
, calldata
->server
, NULL
) == -EAGAIN
)
3839 nfs_restart_rpc(task
,
3840 calldata
->server
->nfs_client
);
3844 static void nfs4_locku_prepare(struct rpc_task
*task
, void *data
)
3846 struct nfs4_unlockdata
*calldata
= data
;
3848 if (nfs_wait_on_sequence(calldata
->arg
.seqid
, task
) != 0)
3850 if ((calldata
->lsp
->ls_flags
& NFS_LOCK_INITIALIZED
) == 0) {
3851 /* Note: exit _without_ running nfs4_locku_done */
3852 task
->tk_action
= NULL
;
3855 calldata
->timestamp
= jiffies
;
3856 if (nfs4_setup_sequence(calldata
->server
,
3857 &calldata
->arg
.seq_args
,
3858 &calldata
->res
.seq_res
, 1, task
))
3860 rpc_call_start(task
);
3863 static const struct rpc_call_ops nfs4_locku_ops
= {
3864 .rpc_call_prepare
= nfs4_locku_prepare
,
3865 .rpc_call_done
= nfs4_locku_done
,
3866 .rpc_release
= nfs4_locku_release_calldata
,
3869 static struct rpc_task
*nfs4_do_unlck(struct file_lock
*fl
,
3870 struct nfs_open_context
*ctx
,
3871 struct nfs4_lock_state
*lsp
,
3872 struct nfs_seqid
*seqid
)
3874 struct nfs4_unlockdata
*data
;
3875 struct rpc_message msg
= {
3876 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOCKU
],
3877 .rpc_cred
= ctx
->cred
,
3879 struct rpc_task_setup task_setup_data
= {
3880 .rpc_client
= NFS_CLIENT(lsp
->ls_state
->inode
),
3881 .rpc_message
= &msg
,
3882 .callback_ops
= &nfs4_locku_ops
,
3883 .workqueue
= nfsiod_workqueue
,
3884 .flags
= RPC_TASK_ASYNC
,
3887 /* Ensure this is an unlock - when canceling a lock, the
3888 * canceled lock is passed in, and it won't be an unlock.
3890 fl
->fl_type
= F_UNLCK
;
3892 data
= nfs4_alloc_unlockdata(fl
, ctx
, lsp
, seqid
);
3894 nfs_free_seqid(seqid
);
3895 return ERR_PTR(-ENOMEM
);
3898 msg
.rpc_argp
= &data
->arg
,
3899 msg
.rpc_resp
= &data
->res
,
3900 task_setup_data
.callback_data
= data
;
3901 return rpc_run_task(&task_setup_data
);
3904 static int nfs4_proc_unlck(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
3906 struct nfs_inode
*nfsi
= NFS_I(state
->inode
);
3907 struct nfs_seqid
*seqid
;
3908 struct nfs4_lock_state
*lsp
;
3909 struct rpc_task
*task
;
3911 unsigned char fl_flags
= request
->fl_flags
;
3913 status
= nfs4_set_lock_state(state
, request
);
3914 /* Unlock _before_ we do the RPC call */
3915 request
->fl_flags
|= FL_EXISTS
;
3916 down_read(&nfsi
->rwsem
);
3917 if (do_vfs_lock(request
->fl_file
, request
) == -ENOENT
) {
3918 up_read(&nfsi
->rwsem
);
3921 up_read(&nfsi
->rwsem
);
3924 /* Is this a delegated lock? */
3925 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
))
3927 lsp
= request
->fl_u
.nfs4_fl
.owner
;
3928 seqid
= nfs_alloc_seqid(&lsp
->ls_seqid
, GFP_KERNEL
);
3932 task
= nfs4_do_unlck(request
, nfs_file_open_context(request
->fl_file
), lsp
, seqid
);
3933 status
= PTR_ERR(task
);
3936 status
= nfs4_wait_for_completion_rpc_task(task
);
3939 request
->fl_flags
= fl_flags
;
3943 struct nfs4_lockdata
{
3944 struct nfs_lock_args arg
;
3945 struct nfs_lock_res res
;
3946 struct nfs4_lock_state
*lsp
;
3947 struct nfs_open_context
*ctx
;
3948 struct file_lock fl
;
3949 unsigned long timestamp
;
3952 struct nfs_server
*server
;
3955 static struct nfs4_lockdata
*nfs4_alloc_lockdata(struct file_lock
*fl
,
3956 struct nfs_open_context
*ctx
, struct nfs4_lock_state
*lsp
,
3959 struct nfs4_lockdata
*p
;
3960 struct inode
*inode
= lsp
->ls_state
->inode
;
3961 struct nfs_server
*server
= NFS_SERVER(inode
);
3963 p
= kzalloc(sizeof(*p
), gfp_mask
);
3967 p
->arg
.fh
= NFS_FH(inode
);
3969 p
->arg
.open_seqid
= nfs_alloc_seqid(&lsp
->ls_state
->owner
->so_seqid
, gfp_mask
);
3970 if (p
->arg
.open_seqid
== NULL
)
3972 p
->arg
.lock_seqid
= nfs_alloc_seqid(&lsp
->ls_seqid
, gfp_mask
);
3973 if (p
->arg
.lock_seqid
== NULL
)
3974 goto out_free_seqid
;
3975 p
->arg
.lock_stateid
= &lsp
->ls_stateid
;
3976 p
->arg
.lock_owner
.clientid
= server
->nfs_client
->cl_clientid
;
3977 p
->arg
.lock_owner
.id
= lsp
->ls_id
.id
;
3978 p
->res
.lock_seqid
= p
->arg
.lock_seqid
;
3981 atomic_inc(&lsp
->ls_count
);
3982 p
->ctx
= get_nfs_open_context(ctx
);
3983 memcpy(&p
->fl
, fl
, sizeof(p
->fl
));
3986 nfs_free_seqid(p
->arg
.open_seqid
);
3992 static void nfs4_lock_prepare(struct rpc_task
*task
, void *calldata
)
3994 struct nfs4_lockdata
*data
= calldata
;
3995 struct nfs4_state
*state
= data
->lsp
->ls_state
;
3997 dprintk("%s: begin!\n", __func__
);
3998 if (nfs_wait_on_sequence(data
->arg
.lock_seqid
, task
) != 0)
4000 /* Do we need to do an open_to_lock_owner? */
4001 if (!(data
->arg
.lock_seqid
->sequence
->flags
& NFS_SEQID_CONFIRMED
)) {
4002 if (nfs_wait_on_sequence(data
->arg
.open_seqid
, task
) != 0)
4004 data
->arg
.open_stateid
= &state
->stateid
;
4005 data
->arg
.new_lock_owner
= 1;
4006 data
->res
.open_seqid
= data
->arg
.open_seqid
;
4008 data
->arg
.new_lock_owner
= 0;
4009 data
->timestamp
= jiffies
;
4010 if (nfs4_setup_sequence(data
->server
,
4011 &data
->arg
.seq_args
,
4012 &data
->res
.seq_res
, 1, task
))
4014 rpc_call_start(task
);
4015 dprintk("%s: done!, ret = %d\n", __func__
, data
->rpc_status
);
4018 static void nfs4_recover_lock_prepare(struct rpc_task
*task
, void *calldata
)
4020 rpc_task_set_priority(task
, RPC_PRIORITY_PRIVILEGED
);
4021 nfs4_lock_prepare(task
, calldata
);
4024 static void nfs4_lock_done(struct rpc_task
*task
, void *calldata
)
4026 struct nfs4_lockdata
*data
= calldata
;
4028 dprintk("%s: begin!\n", __func__
);
4030 if (!nfs4_sequence_done(task
, &data
->res
.seq_res
))
4033 data
->rpc_status
= task
->tk_status
;
4034 if (data
->arg
.new_lock_owner
!= 0) {
4035 if (data
->rpc_status
== 0)
4036 nfs_confirm_seqid(&data
->lsp
->ls_seqid
, 0);
4040 if (data
->rpc_status
== 0) {
4041 memcpy(data
->lsp
->ls_stateid
.data
, data
->res
.stateid
.data
,
4042 sizeof(data
->lsp
->ls_stateid
.data
));
4043 data
->lsp
->ls_flags
|= NFS_LOCK_INITIALIZED
;
4044 renew_lease(NFS_SERVER(data
->ctx
->path
.dentry
->d_inode
), data
->timestamp
);
4047 dprintk("%s: done, ret = %d!\n", __func__
, data
->rpc_status
);
4050 static void nfs4_lock_release(void *calldata
)
4052 struct nfs4_lockdata
*data
= calldata
;
4054 dprintk("%s: begin!\n", __func__
);
4055 nfs_free_seqid(data
->arg
.open_seqid
);
4056 if (data
->cancelled
!= 0) {
4057 struct rpc_task
*task
;
4058 task
= nfs4_do_unlck(&data
->fl
, data
->ctx
, data
->lsp
,
4059 data
->arg
.lock_seqid
);
4062 dprintk("%s: cancelling lock!\n", __func__
);
4064 nfs_free_seqid(data
->arg
.lock_seqid
);
4065 nfs4_put_lock_state(data
->lsp
);
4066 put_nfs_open_context(data
->ctx
);
4068 dprintk("%s: done!\n", __func__
);
4071 static const struct rpc_call_ops nfs4_lock_ops
= {
4072 .rpc_call_prepare
= nfs4_lock_prepare
,
4073 .rpc_call_done
= nfs4_lock_done
,
4074 .rpc_release
= nfs4_lock_release
,
4077 static const struct rpc_call_ops nfs4_recover_lock_ops
= {
4078 .rpc_call_prepare
= nfs4_recover_lock_prepare
,
4079 .rpc_call_done
= nfs4_lock_done
,
4080 .rpc_release
= nfs4_lock_release
,
4083 static void nfs4_handle_setlk_error(struct nfs_server
*server
, struct nfs4_lock_state
*lsp
, int new_lock_owner
, int error
)
4085 struct nfs_client
*clp
= server
->nfs_client
;
4086 struct nfs4_state
*state
= lsp
->ls_state
;
4089 case -NFS4ERR_ADMIN_REVOKED
:
4090 case -NFS4ERR_BAD_STATEID
:
4091 case -NFS4ERR_EXPIRED
:
4092 if (new_lock_owner
!= 0 ||
4093 (lsp
->ls_flags
& NFS_LOCK_INITIALIZED
) != 0)
4094 nfs4_state_mark_reclaim_nograce(clp
, state
);
4095 lsp
->ls_seqid
.flags
&= ~NFS_SEQID_CONFIRMED
;
4097 case -NFS4ERR_STALE_STATEID
:
4098 if (new_lock_owner
!= 0 ||
4099 (lsp
->ls_flags
& NFS_LOCK_INITIALIZED
) != 0)
4100 nfs4_state_mark_reclaim_reboot(clp
, state
);
4101 lsp
->ls_seqid
.flags
&= ~NFS_SEQID_CONFIRMED
;
4105 static int _nfs4_do_setlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*fl
, int recovery_type
)
4107 struct nfs4_lockdata
*data
;
4108 struct rpc_task
*task
;
4109 struct rpc_message msg
= {
4110 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOCK
],
4111 .rpc_cred
= state
->owner
->so_cred
,
4113 struct rpc_task_setup task_setup_data
= {
4114 .rpc_client
= NFS_CLIENT(state
->inode
),
4115 .rpc_message
= &msg
,
4116 .callback_ops
= &nfs4_lock_ops
,
4117 .workqueue
= nfsiod_workqueue
,
4118 .flags
= RPC_TASK_ASYNC
,
4122 dprintk("%s: begin!\n", __func__
);
4123 data
= nfs4_alloc_lockdata(fl
, nfs_file_open_context(fl
->fl_file
),
4124 fl
->fl_u
.nfs4_fl
.owner
,
4125 recovery_type
== NFS_LOCK_NEW
? GFP_KERNEL
: GFP_NOFS
);
4129 data
->arg
.block
= 1;
4130 if (recovery_type
> NFS_LOCK_NEW
) {
4131 if (recovery_type
== NFS_LOCK_RECLAIM
)
4132 data
->arg
.reclaim
= NFS_LOCK_RECLAIM
;
4133 task_setup_data
.callback_ops
= &nfs4_recover_lock_ops
;
4135 msg
.rpc_argp
= &data
->arg
,
4136 msg
.rpc_resp
= &data
->res
,
4137 task_setup_data
.callback_data
= data
;
4138 task
= rpc_run_task(&task_setup_data
);
4140 return PTR_ERR(task
);
4141 ret
= nfs4_wait_for_completion_rpc_task(task
);
4143 ret
= data
->rpc_status
;
4145 nfs4_handle_setlk_error(data
->server
, data
->lsp
,
4146 data
->arg
.new_lock_owner
, ret
);
4148 data
->cancelled
= 1;
4150 dprintk("%s: done, ret = %d!\n", __func__
, ret
);
4154 static int nfs4_lock_reclaim(struct nfs4_state
*state
, struct file_lock
*request
)
4156 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
4157 struct nfs4_exception exception
= { };
4161 /* Cache the lock if possible... */
4162 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) != 0)
4164 err
= _nfs4_do_setlk(state
, F_SETLK
, request
, NFS_LOCK_RECLAIM
);
4165 if (err
!= -NFS4ERR_DELAY
)
4167 nfs4_handle_exception(server
, err
, &exception
);
4168 } while (exception
.retry
);
4172 static int nfs4_lock_expired(struct nfs4_state
*state
, struct file_lock
*request
)
4174 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
4175 struct nfs4_exception exception
= { };
4178 err
= nfs4_set_lock_state(state
, request
);
4182 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) != 0)
4184 err
= _nfs4_do_setlk(state
, F_SETLK
, request
, NFS_LOCK_EXPIRED
);
4188 case -NFS4ERR_GRACE
:
4189 case -NFS4ERR_DELAY
:
4190 nfs4_handle_exception(server
, err
, &exception
);
4193 } while (exception
.retry
);
4198 static int _nfs4_proc_setlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
4200 struct nfs_inode
*nfsi
= NFS_I(state
->inode
);
4201 unsigned char fl_flags
= request
->fl_flags
;
4202 int status
= -ENOLCK
;
4204 if ((fl_flags
& FL_POSIX
) &&
4205 !test_bit(NFS_STATE_POSIX_LOCKS
, &state
->flags
))
4207 /* Is this a delegated open? */
4208 status
= nfs4_set_lock_state(state
, request
);
4211 request
->fl_flags
|= FL_ACCESS
;
4212 status
= do_vfs_lock(request
->fl_file
, request
);
4215 down_read(&nfsi
->rwsem
);
4216 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
)) {
4217 /* Yes: cache locks! */
4218 /* ...but avoid races with delegation recall... */
4219 request
->fl_flags
= fl_flags
& ~FL_SLEEP
;
4220 status
= do_vfs_lock(request
->fl_file
, request
);
4223 status
= _nfs4_do_setlk(state
, cmd
, request
, NFS_LOCK_NEW
);
4226 /* Note: we always want to sleep here! */
4227 request
->fl_flags
= fl_flags
| FL_SLEEP
;
4228 if (do_vfs_lock(request
->fl_file
, request
) < 0)
4229 printk(KERN_WARNING
"%s: VFS is out of sync with lock manager!\n", __func__
);
4231 up_read(&nfsi
->rwsem
);
4233 request
->fl_flags
= fl_flags
;
4237 static int nfs4_proc_setlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
4239 struct nfs4_exception exception
= { };
4243 err
= _nfs4_proc_setlk(state
, cmd
, request
);
4244 if (err
== -NFS4ERR_DENIED
)
4246 err
= nfs4_handle_exception(NFS_SERVER(state
->inode
),
4248 } while (exception
.retry
);
4253 nfs4_proc_lock(struct file
*filp
, int cmd
, struct file_lock
*request
)
4255 struct nfs_open_context
*ctx
;
4256 struct nfs4_state
*state
;
4257 unsigned long timeout
= NFS4_LOCK_MINTIMEOUT
;
4260 /* verify open state */
4261 ctx
= nfs_file_open_context(filp
);
4264 if (request
->fl_start
< 0 || request
->fl_end
< 0)
4267 if (IS_GETLK(cmd
)) {
4269 return nfs4_proc_getlk(state
, F_GETLK
, request
);
4273 if (!(IS_SETLK(cmd
) || IS_SETLKW(cmd
)))
4276 if (request
->fl_type
== F_UNLCK
) {
4278 return nfs4_proc_unlck(state
, cmd
, request
);
4285 status
= nfs4_proc_setlk(state
, cmd
, request
);
4286 if ((status
!= -EAGAIN
) || IS_SETLK(cmd
))
4288 timeout
= nfs4_set_lock_task_retry(timeout
);
4289 status
= -ERESTARTSYS
;
4292 } while(status
< 0);
4296 int nfs4_lock_delegation_recall(struct nfs4_state
*state
, struct file_lock
*fl
)
4298 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
4299 struct nfs4_exception exception
= { };
4302 err
= nfs4_set_lock_state(state
, fl
);
4306 err
= _nfs4_do_setlk(state
, F_SETLK
, fl
, NFS_LOCK_NEW
);
4309 printk(KERN_ERR
"%s: unhandled error %d.\n",
4314 case -NFS4ERR_EXPIRED
:
4315 case -NFS4ERR_STALE_CLIENTID
:
4316 case -NFS4ERR_STALE_STATEID
:
4317 case -NFS4ERR_BADSESSION
:
4318 case -NFS4ERR_BADSLOT
:
4319 case -NFS4ERR_BAD_HIGH_SLOT
:
4320 case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION
:
4321 case -NFS4ERR_DEADSESSION
:
4322 nfs4_schedule_state_recovery(server
->nfs_client
);
4326 * The show must go on: exit, but mark the
4327 * stateid as needing recovery.
4329 case -NFS4ERR_ADMIN_REVOKED
:
4330 case -NFS4ERR_BAD_STATEID
:
4331 case -NFS4ERR_OPENMODE
:
4332 nfs4_state_mark_reclaim_nograce(server
->nfs_client
, state
);
4337 * User RPCSEC_GSS context has expired.
4338 * We cannot recover this stateid now, so
4339 * skip it and allow recovery thread to
4345 case -NFS4ERR_DENIED
:
4346 /* kill_proc(fl->fl_pid, SIGLOST, 1); */
4349 case -NFS4ERR_DELAY
:
4352 err
= nfs4_handle_exception(server
, err
, &exception
);
4353 } while (exception
.retry
);
4358 static void nfs4_release_lockowner_release(void *calldata
)
4363 const struct rpc_call_ops nfs4_release_lockowner_ops
= {
4364 .rpc_release
= nfs4_release_lockowner_release
,
4367 void nfs4_release_lockowner(const struct nfs4_lock_state
*lsp
)
4369 struct nfs_server
*server
= lsp
->ls_state
->owner
->so_server
;
4370 struct nfs_release_lockowner_args
*args
;
4371 struct rpc_message msg
= {
4372 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RELEASE_LOCKOWNER
],
4375 if (server
->nfs_client
->cl_mvops
->minor_version
!= 0)
4377 args
= kmalloc(sizeof(*args
), GFP_NOFS
);
4380 args
->lock_owner
.clientid
= server
->nfs_client
->cl_clientid
;
4381 args
->lock_owner
.id
= lsp
->ls_id
.id
;
4382 msg
.rpc_argp
= args
;
4383 rpc_call_async(server
->client
, &msg
, 0, &nfs4_release_lockowner_ops
, args
);
4386 #define XATTR_NAME_NFSV4_ACL "system.nfs4_acl"
4388 int nfs4_setxattr(struct dentry
*dentry
, const char *key
, const void *buf
,
4389 size_t buflen
, int flags
)
4391 struct inode
*inode
= dentry
->d_inode
;
4393 if (strcmp(key
, XATTR_NAME_NFSV4_ACL
) != 0)
4396 return nfs4_proc_set_acl(inode
, buf
, buflen
);
4399 /* The getxattr man page suggests returning -ENODATA for unknown attributes,
4400 * and that's what we'll do for e.g. user attributes that haven't been set.
4401 * But we'll follow ext2/ext3's lead by returning -EOPNOTSUPP for unsupported
4402 * attributes in kernel-managed attribute namespaces. */
4403 ssize_t
nfs4_getxattr(struct dentry
*dentry
, const char *key
, void *buf
,
4406 struct inode
*inode
= dentry
->d_inode
;
4408 if (strcmp(key
, XATTR_NAME_NFSV4_ACL
) != 0)
4411 return nfs4_proc_get_acl(inode
, buf
, buflen
);
4414 ssize_t
nfs4_listxattr(struct dentry
*dentry
, char *buf
, size_t buflen
)
4416 size_t len
= strlen(XATTR_NAME_NFSV4_ACL
) + 1;
4418 if (!nfs4_server_supports_acls(NFS_SERVER(dentry
->d_inode
)))
4420 if (buf
&& buflen
< len
)
4423 memcpy(buf
, XATTR_NAME_NFSV4_ACL
, len
);
4427 static void nfs_fixup_referral_attributes(struct nfs_fattr
*fattr
)
4429 if (!((fattr
->valid
& NFS_ATTR_FATTR_FILEID
) &&
4430 (fattr
->valid
& NFS_ATTR_FATTR_FSID
) &&
4431 (fattr
->valid
& NFS_ATTR_FATTR_V4_REFERRAL
)))
4434 fattr
->valid
|= NFS_ATTR_FATTR_TYPE
| NFS_ATTR_FATTR_MODE
|
4435 NFS_ATTR_FATTR_NLINK
;
4436 fattr
->mode
= S_IFDIR
| S_IRUGO
| S_IXUGO
;
4440 int nfs4_proc_fs_locations(struct inode
*dir
, const struct qstr
*name
,
4441 struct nfs4_fs_locations
*fs_locations
, struct page
*page
)
4443 struct nfs_server
*server
= NFS_SERVER(dir
);
4445 [0] = FATTR4_WORD0_FSID
| FATTR4_WORD0_FS_LOCATIONS
,
4446 [1] = FATTR4_WORD1_MOUNTED_ON_FILEID
,
4448 struct nfs4_fs_locations_arg args
= {
4449 .dir_fh
= NFS_FH(dir
),
4454 struct nfs4_fs_locations_res res
= {
4455 .fs_locations
= fs_locations
,
4457 struct rpc_message msg
= {
4458 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_FS_LOCATIONS
],
4464 dprintk("%s: start\n", __func__
);
4465 nfs_fattr_init(&fs_locations
->fattr
);
4466 fs_locations
->server
= server
;
4467 fs_locations
->nlocations
= 0;
4468 status
= nfs4_call_sync(server
, &msg
, &args
, &res
, 0);
4469 nfs_fixup_referral_attributes(&fs_locations
->fattr
);
4470 dprintk("%s: returned status = %d\n", __func__
, status
);
4474 #ifdef CONFIG_NFS_V4_1
4476 * nfs4_proc_exchange_id()
4478 * Since the clientid has expired, all compounds using sessions
4479 * associated with the stale clientid will be returning
4480 * NFS4ERR_BADSESSION in the sequence operation, and will therefore
4481 * be in some phase of session reset.
4483 int nfs4_proc_exchange_id(struct nfs_client
*clp
, struct rpc_cred
*cred
)
4485 nfs4_verifier verifier
;
4486 struct nfs41_exchange_id_args args
= {
4488 .flags
= clp
->cl_exchange_flags
,
4490 struct nfs41_exchange_id_res res
= {
4494 struct rpc_message msg
= {
4495 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_EXCHANGE_ID
],
4502 dprintk("--> %s\n", __func__
);
4503 BUG_ON(clp
== NULL
);
4505 /* Remove server-only flags */
4506 args
.flags
&= ~EXCHGID4_FLAG_CONFIRMED_R
;
4508 p
= (u32
*)verifier
.data
;
4509 *p
++ = htonl((u32
)clp
->cl_boot_time
.tv_sec
);
4510 *p
= htonl((u32
)clp
->cl_boot_time
.tv_nsec
);
4511 args
.verifier
= &verifier
;
4514 args
.id_len
= scnprintf(args
.id
, sizeof(args
.id
),
4517 rpc_peeraddr2str(clp
->cl_rpcclient
,
4519 clp
->cl_id_uniquifier
);
4521 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, 0);
4523 if (status
!= -NFS4ERR_CLID_INUSE
)
4529 if (++clp
->cl_id_uniquifier
== 0)
4533 dprintk("<-- %s status= %d\n", __func__
, status
);
4537 struct nfs4_get_lease_time_data
{
4538 struct nfs4_get_lease_time_args
*args
;
4539 struct nfs4_get_lease_time_res
*res
;
4540 struct nfs_client
*clp
;
4543 static void nfs4_get_lease_time_prepare(struct rpc_task
*task
,
4547 struct nfs4_get_lease_time_data
*data
=
4548 (struct nfs4_get_lease_time_data
*)calldata
;
4550 dprintk("--> %s\n", __func__
);
4551 rpc_task_set_priority(task
, RPC_PRIORITY_PRIVILEGED
);
4552 /* just setup sequence, do not trigger session recovery
4553 since we're invoked within one */
4554 ret
= nfs41_setup_sequence(data
->clp
->cl_session
,
4555 &data
->args
->la_seq_args
,
4556 &data
->res
->lr_seq_res
, 0, task
);
4558 BUG_ON(ret
== -EAGAIN
);
4559 rpc_call_start(task
);
4560 dprintk("<-- %s\n", __func__
);
4564 * Called from nfs4_state_manager thread for session setup, so don't recover
4565 * from sequence operation or clientid errors.
4567 static void nfs4_get_lease_time_done(struct rpc_task
*task
, void *calldata
)
4569 struct nfs4_get_lease_time_data
*data
=
4570 (struct nfs4_get_lease_time_data
*)calldata
;
4572 dprintk("--> %s\n", __func__
);
4573 if (!nfs41_sequence_done(task
, &data
->res
->lr_seq_res
))
4575 switch (task
->tk_status
) {
4576 case -NFS4ERR_DELAY
:
4577 case -NFS4ERR_GRACE
:
4578 dprintk("%s Retry: tk_status %d\n", __func__
, task
->tk_status
);
4579 rpc_delay(task
, NFS4_POLL_RETRY_MIN
);
4580 task
->tk_status
= 0;
4581 nfs_restart_rpc(task
, data
->clp
);
4584 dprintk("<-- %s\n", __func__
);
4587 struct rpc_call_ops nfs4_get_lease_time_ops
= {
4588 .rpc_call_prepare
= nfs4_get_lease_time_prepare
,
4589 .rpc_call_done
= nfs4_get_lease_time_done
,
4592 int nfs4_proc_get_lease_time(struct nfs_client
*clp
, struct nfs_fsinfo
*fsinfo
)
4594 struct rpc_task
*task
;
4595 struct nfs4_get_lease_time_args args
;
4596 struct nfs4_get_lease_time_res res
= {
4597 .lr_fsinfo
= fsinfo
,
4599 struct nfs4_get_lease_time_data data
= {
4604 struct rpc_message msg
= {
4605 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GET_LEASE_TIME
],
4609 struct rpc_task_setup task_setup
= {
4610 .rpc_client
= clp
->cl_rpcclient
,
4611 .rpc_message
= &msg
,
4612 .callback_ops
= &nfs4_get_lease_time_ops
,
4613 .callback_data
= &data
4617 dprintk("--> %s\n", __func__
);
4618 task
= rpc_run_task(&task_setup
);
4621 status
= PTR_ERR(task
);
4623 status
= task
->tk_status
;
4626 dprintk("<-- %s return %d\n", __func__
, status
);
4632 * Reset a slot table
4634 static int nfs4_reset_slot_table(struct nfs4_slot_table
*tbl
, u32 max_reqs
,
4637 struct nfs4_slot
*new = NULL
;
4641 dprintk("--> %s: max_reqs=%u, tbl->max_slots %d\n", __func__
,
4642 max_reqs
, tbl
->max_slots
);
4644 /* Does the newly negotiated max_reqs match the existing slot table? */
4645 if (max_reqs
!= tbl
->max_slots
) {
4647 new = kmalloc(max_reqs
* sizeof(struct nfs4_slot
),
4654 spin_lock(&tbl
->slot_tbl_lock
);
4657 tbl
->max_slots
= max_reqs
;
4659 for (i
= 0; i
< tbl
->max_slots
; ++i
)
4660 tbl
->slots
[i
].seq_nr
= ivalue
;
4661 spin_unlock(&tbl
->slot_tbl_lock
);
4662 dprintk("%s: tbl=%p slots=%p max_slots=%d\n", __func__
,
4663 tbl
, tbl
->slots
, tbl
->max_slots
);
4665 dprintk("<-- %s: return %d\n", __func__
, ret
);
4670 * Reset the forechannel and backchannel slot tables
4672 static int nfs4_reset_slot_tables(struct nfs4_session
*session
)
4676 status
= nfs4_reset_slot_table(&session
->fc_slot_table
,
4677 session
->fc_attrs
.max_reqs
, 1);
4681 status
= nfs4_reset_slot_table(&session
->bc_slot_table
,
4682 session
->bc_attrs
.max_reqs
, 0);
4686 /* Destroy the slot table */
4687 static void nfs4_destroy_slot_tables(struct nfs4_session
*session
)
4689 if (session
->fc_slot_table
.slots
!= NULL
) {
4690 kfree(session
->fc_slot_table
.slots
);
4691 session
->fc_slot_table
.slots
= NULL
;
4693 if (session
->bc_slot_table
.slots
!= NULL
) {
4694 kfree(session
->bc_slot_table
.slots
);
4695 session
->bc_slot_table
.slots
= NULL
;
4701 * Initialize slot table
4703 static int nfs4_init_slot_table(struct nfs4_slot_table
*tbl
,
4704 int max_slots
, int ivalue
)
4706 struct nfs4_slot
*slot
;
4709 BUG_ON(max_slots
> NFS4_MAX_SLOT_TABLE
);
4711 dprintk("--> %s: max_reqs=%u\n", __func__
, max_slots
);
4713 slot
= kcalloc(max_slots
, sizeof(struct nfs4_slot
), GFP_NOFS
);
4718 spin_lock(&tbl
->slot_tbl_lock
);
4719 tbl
->max_slots
= max_slots
;
4721 tbl
->highest_used_slotid
= -1; /* no slot is currently used */
4722 spin_unlock(&tbl
->slot_tbl_lock
);
4723 dprintk("%s: tbl=%p slots=%p max_slots=%d\n", __func__
,
4724 tbl
, tbl
->slots
, tbl
->max_slots
);
4726 dprintk("<-- %s: return %d\n", __func__
, ret
);
4731 * Initialize the forechannel and backchannel tables
4733 static int nfs4_init_slot_tables(struct nfs4_session
*session
)
4735 struct nfs4_slot_table
*tbl
;
4738 tbl
= &session
->fc_slot_table
;
4739 if (tbl
->slots
== NULL
) {
4740 status
= nfs4_init_slot_table(tbl
,
4741 session
->fc_attrs
.max_reqs
, 1);
4746 tbl
= &session
->bc_slot_table
;
4747 if (tbl
->slots
== NULL
) {
4748 status
= nfs4_init_slot_table(tbl
,
4749 session
->bc_attrs
.max_reqs
, 0);
4751 nfs4_destroy_slot_tables(session
);
4757 struct nfs4_session
*nfs4_alloc_session(struct nfs_client
*clp
)
4759 struct nfs4_session
*session
;
4760 struct nfs4_slot_table
*tbl
;
4762 session
= kzalloc(sizeof(struct nfs4_session
), GFP_NOFS
);
4766 init_completion(&session
->complete
);
4768 tbl
= &session
->fc_slot_table
;
4769 tbl
->highest_used_slotid
= -1;
4770 spin_lock_init(&tbl
->slot_tbl_lock
);
4771 rpc_init_priority_wait_queue(&tbl
->slot_tbl_waitq
, "ForeChannel Slot table");
4773 tbl
= &session
->bc_slot_table
;
4774 tbl
->highest_used_slotid
= -1;
4775 spin_lock_init(&tbl
->slot_tbl_lock
);
4776 rpc_init_wait_queue(&tbl
->slot_tbl_waitq
, "BackChannel Slot table");
4778 session
->session_state
= 1<<NFS4_SESSION_INITING
;
4784 void nfs4_destroy_session(struct nfs4_session
*session
)
4786 nfs4_proc_destroy_session(session
);
4787 dprintk("%s Destroy backchannel for xprt %p\n",
4788 __func__
, session
->clp
->cl_rpcclient
->cl_xprt
);
4789 xprt_destroy_backchannel(session
->clp
->cl_rpcclient
->cl_xprt
,
4790 NFS41_BC_MIN_CALLBACKS
);
4791 nfs4_destroy_slot_tables(session
);
4796 * Initialize the values to be used by the client in CREATE_SESSION
4797 * If nfs4_init_session set the fore channel request and response sizes,
4800 * Set the back channel max_resp_sz_cached to zero to force the client to
4801 * always set csa_cachethis to FALSE because the current implementation
4802 * of the back channel DRC only supports caching the CB_SEQUENCE operation.
4804 static void nfs4_init_channel_attrs(struct nfs41_create_session_args
*args
)
4806 struct nfs4_session
*session
= args
->client
->cl_session
;
4807 unsigned int mxrqst_sz
= session
->fc_attrs
.max_rqst_sz
,
4808 mxresp_sz
= session
->fc_attrs
.max_resp_sz
;
4811 mxrqst_sz
= NFS_MAX_FILE_IO_SIZE
;
4813 mxresp_sz
= NFS_MAX_FILE_IO_SIZE
;
4814 /* Fore channel attributes */
4815 args
->fc_attrs
.headerpadsz
= 0;
4816 args
->fc_attrs
.max_rqst_sz
= mxrqst_sz
;
4817 args
->fc_attrs
.max_resp_sz
= mxresp_sz
;
4818 args
->fc_attrs
.max_ops
= NFS4_MAX_OPS
;
4819 args
->fc_attrs
.max_reqs
= session
->clp
->cl_rpcclient
->cl_xprt
->max_reqs
;
4821 dprintk("%s: Fore Channel : max_rqst_sz=%u max_resp_sz=%u "
4822 "max_ops=%u max_reqs=%u\n",
4824 args
->fc_attrs
.max_rqst_sz
, args
->fc_attrs
.max_resp_sz
,
4825 args
->fc_attrs
.max_ops
, args
->fc_attrs
.max_reqs
);
4827 /* Back channel attributes */
4828 args
->bc_attrs
.headerpadsz
= 0;
4829 args
->bc_attrs
.max_rqst_sz
= PAGE_SIZE
;
4830 args
->bc_attrs
.max_resp_sz
= PAGE_SIZE
;
4831 args
->bc_attrs
.max_resp_sz_cached
= 0;
4832 args
->bc_attrs
.max_ops
= NFS4_MAX_BACK_CHANNEL_OPS
;
4833 args
->bc_attrs
.max_reqs
= 1;
4835 dprintk("%s: Back Channel : max_rqst_sz=%u max_resp_sz=%u "
4836 "max_resp_sz_cached=%u max_ops=%u max_reqs=%u\n",
4838 args
->bc_attrs
.max_rqst_sz
, args
->bc_attrs
.max_resp_sz
,
4839 args
->bc_attrs
.max_resp_sz_cached
, args
->bc_attrs
.max_ops
,
4840 args
->bc_attrs
.max_reqs
);
4843 static int _verify_channel_attr(char *chan
, char *attr_name
, u32 sent
, u32 rcvd
)
4847 printk(KERN_WARNING
"%s: Session INVALID: %s channel %s increased. "
4848 "sent=%u rcvd=%u\n", __func__
, chan
, attr_name
, sent
, rcvd
);
4852 #define _verify_fore_channel_attr(_name_) \
4853 _verify_channel_attr("fore", #_name_, \
4854 args->fc_attrs._name_, \
4855 session->fc_attrs._name_)
4857 #define _verify_back_channel_attr(_name_) \
4858 _verify_channel_attr("back", #_name_, \
4859 args->bc_attrs._name_, \
4860 session->bc_attrs._name_)
4863 * The server is not allowed to increase the fore channel header pad size,
4864 * maximum response size, or maximum number of operations.
4866 * The back channel attributes are only negotiatied down: We send what the
4867 * (back channel) server insists upon.
4869 static int nfs4_verify_channel_attrs(struct nfs41_create_session_args
*args
,
4870 struct nfs4_session
*session
)
4874 ret
|= _verify_fore_channel_attr(headerpadsz
);
4875 ret
|= _verify_fore_channel_attr(max_resp_sz
);
4876 ret
|= _verify_fore_channel_attr(max_ops
);
4878 ret
|= _verify_back_channel_attr(headerpadsz
);
4879 ret
|= _verify_back_channel_attr(max_rqst_sz
);
4880 ret
|= _verify_back_channel_attr(max_resp_sz
);
4881 ret
|= _verify_back_channel_attr(max_resp_sz_cached
);
4882 ret
|= _verify_back_channel_attr(max_ops
);
4883 ret
|= _verify_back_channel_attr(max_reqs
);
4888 static int _nfs4_proc_create_session(struct nfs_client
*clp
)
4890 struct nfs4_session
*session
= clp
->cl_session
;
4891 struct nfs41_create_session_args args
= {
4893 .cb_program
= NFS4_CALLBACK
,
4895 struct nfs41_create_session_res res
= {
4898 struct rpc_message msg
= {
4899 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_CREATE_SESSION
],
4905 nfs4_init_channel_attrs(&args
);
4906 args
.flags
= (SESSION4_PERSIST
| SESSION4_BACK_CHAN
);
4908 status
= rpc_call_sync(session
->clp
->cl_rpcclient
, &msg
, 0);
4911 /* Verify the session's negotiated channel_attrs values */
4912 status
= nfs4_verify_channel_attrs(&args
, session
);
4914 /* Increment the clientid slot sequence id */
4922 * Issues a CREATE_SESSION operation to the server.
4923 * It is the responsibility of the caller to verify the session is
4924 * expired before calling this routine.
4926 int nfs4_proc_create_session(struct nfs_client
*clp
)
4930 struct nfs4_session
*session
= clp
->cl_session
;
4932 dprintk("--> %s clp=%p session=%p\n", __func__
, clp
, session
);
4934 status
= _nfs4_proc_create_session(clp
);
4938 /* Init and reset the fore channel */
4939 status
= nfs4_init_slot_tables(session
);
4940 dprintk("slot table initialization returned %d\n", status
);
4943 status
= nfs4_reset_slot_tables(session
);
4944 dprintk("slot table reset returned %d\n", status
);
4948 ptr
= (unsigned *)&session
->sess_id
.data
[0];
4949 dprintk("%s client>seqid %d sessionid %u:%u:%u:%u\n", __func__
,
4950 clp
->cl_seqid
, ptr
[0], ptr
[1], ptr
[2], ptr
[3]);
4952 dprintk("<-- %s\n", __func__
);
4957 * Issue the over-the-wire RPC DESTROY_SESSION.
4958 * The caller must serialize access to this routine.
4960 int nfs4_proc_destroy_session(struct nfs4_session
*session
)
4963 struct rpc_message msg
;
4965 dprintk("--> nfs4_proc_destroy_session\n");
4967 /* session is still being setup */
4968 if (session
->clp
->cl_cons_state
!= NFS_CS_READY
)
4971 msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_DESTROY_SESSION
];
4972 msg
.rpc_argp
= session
;
4973 msg
.rpc_resp
= NULL
;
4974 msg
.rpc_cred
= NULL
;
4975 status
= rpc_call_sync(session
->clp
->cl_rpcclient
, &msg
, 0);
4979 "Got error %d from the server on DESTROY_SESSION. "
4980 "Session has been destroyed regardless...\n", status
);
4982 dprintk("<-- nfs4_proc_destroy_session\n");
4986 int nfs4_init_session(struct nfs_server
*server
)
4988 struct nfs_client
*clp
= server
->nfs_client
;
4989 struct nfs4_session
*session
;
4990 unsigned int rsize
, wsize
;
4993 if (!nfs4_has_session(clp
))
4996 session
= clp
->cl_session
;
4997 if (!test_and_clear_bit(NFS4_SESSION_INITING
, &session
->session_state
))
5000 rsize
= server
->rsize
;
5002 rsize
= NFS_MAX_FILE_IO_SIZE
;
5003 wsize
= server
->wsize
;
5005 wsize
= NFS_MAX_FILE_IO_SIZE
;
5007 session
->fc_attrs
.max_rqst_sz
= wsize
+ nfs41_maxwrite_overhead
;
5008 session
->fc_attrs
.max_resp_sz
= rsize
+ nfs41_maxread_overhead
;
5010 ret
= nfs4_recover_expired_lease(server
);
5012 ret
= nfs4_check_client_ready(clp
);
5017 * Renew the cl_session lease.
5019 struct nfs4_sequence_data
{
5020 struct nfs_client
*clp
;
5021 struct nfs4_sequence_args args
;
5022 struct nfs4_sequence_res res
;
5025 static void nfs41_sequence_release(void *data
)
5027 struct nfs4_sequence_data
*calldata
= data
;
5028 struct nfs_client
*clp
= calldata
->clp
;
5030 if (atomic_read(&clp
->cl_count
) > 1)
5031 nfs4_schedule_state_renewal(clp
);
5032 nfs_put_client(clp
);
5036 static int nfs41_sequence_handle_errors(struct rpc_task
*task
, struct nfs_client
*clp
)
5038 switch(task
->tk_status
) {
5039 case -NFS4ERR_DELAY
:
5040 rpc_delay(task
, NFS4_POLL_RETRY_MAX
);
5043 nfs4_schedule_state_recovery(clp
);
5048 static void nfs41_sequence_call_done(struct rpc_task
*task
, void *data
)
5050 struct nfs4_sequence_data
*calldata
= data
;
5051 struct nfs_client
*clp
= calldata
->clp
;
5053 if (!nfs41_sequence_done(task
, task
->tk_msg
.rpc_resp
))
5056 if (task
->tk_status
< 0) {
5057 dprintk("%s ERROR %d\n", __func__
, task
->tk_status
);
5058 if (atomic_read(&clp
->cl_count
) == 1)
5061 if (nfs41_sequence_handle_errors(task
, clp
) == -EAGAIN
) {
5062 rpc_restart_call_prepare(task
);
5066 dprintk("%s rpc_cred %p\n", __func__
, task
->tk_msg
.rpc_cred
);
5068 dprintk("<-- %s\n", __func__
);
5071 static void nfs41_sequence_prepare(struct rpc_task
*task
, void *data
)
5073 struct nfs4_sequence_data
*calldata
= data
;
5074 struct nfs_client
*clp
= calldata
->clp
;
5075 struct nfs4_sequence_args
*args
;
5076 struct nfs4_sequence_res
*res
;
5078 args
= task
->tk_msg
.rpc_argp
;
5079 res
= task
->tk_msg
.rpc_resp
;
5081 if (nfs41_setup_sequence(clp
->cl_session
, args
, res
, 0, task
))
5083 rpc_call_start(task
);
5086 static const struct rpc_call_ops nfs41_sequence_ops
= {
5087 .rpc_call_done
= nfs41_sequence_call_done
,
5088 .rpc_call_prepare
= nfs41_sequence_prepare
,
5089 .rpc_release
= nfs41_sequence_release
,
5092 static struct rpc_task
*_nfs41_proc_sequence(struct nfs_client
*clp
, struct rpc_cred
*cred
)
5094 struct nfs4_sequence_data
*calldata
;
5095 struct rpc_message msg
= {
5096 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SEQUENCE
],
5099 struct rpc_task_setup task_setup_data
= {
5100 .rpc_client
= clp
->cl_rpcclient
,
5101 .rpc_message
= &msg
,
5102 .callback_ops
= &nfs41_sequence_ops
,
5103 .flags
= RPC_TASK_ASYNC
| RPC_TASK_SOFT
,
5106 if (!atomic_inc_not_zero(&clp
->cl_count
))
5107 return ERR_PTR(-EIO
);
5108 calldata
= kzalloc(sizeof(*calldata
), GFP_NOFS
);
5109 if (calldata
== NULL
) {
5110 nfs_put_client(clp
);
5111 return ERR_PTR(-ENOMEM
);
5113 msg
.rpc_argp
= &calldata
->args
;
5114 msg
.rpc_resp
= &calldata
->res
;
5115 calldata
->clp
= clp
;
5116 task_setup_data
.callback_data
= calldata
;
5118 return rpc_run_task(&task_setup_data
);
5121 static int nfs41_proc_async_sequence(struct nfs_client
*clp
, struct rpc_cred
*cred
)
5123 struct rpc_task
*task
;
5126 task
= _nfs41_proc_sequence(clp
, cred
);
5128 ret
= PTR_ERR(task
);
5131 dprintk("<-- %s status=%d\n", __func__
, ret
);
5135 static int nfs4_proc_sequence(struct nfs_client
*clp
, struct rpc_cred
*cred
)
5137 struct rpc_task
*task
;
5140 task
= _nfs41_proc_sequence(clp
, cred
);
5142 ret
= PTR_ERR(task
);
5145 ret
= rpc_wait_for_completion_task(task
);
5147 ret
= task
->tk_status
;
5150 dprintk("<-- %s status=%d\n", __func__
, ret
);
5154 struct nfs4_reclaim_complete_data
{
5155 struct nfs_client
*clp
;
5156 struct nfs41_reclaim_complete_args arg
;
5157 struct nfs41_reclaim_complete_res res
;
5160 static void nfs4_reclaim_complete_prepare(struct rpc_task
*task
, void *data
)
5162 struct nfs4_reclaim_complete_data
*calldata
= data
;
5164 rpc_task_set_priority(task
, RPC_PRIORITY_PRIVILEGED
);
5165 if (nfs41_setup_sequence(calldata
->clp
->cl_session
,
5166 &calldata
->arg
.seq_args
,
5167 &calldata
->res
.seq_res
, 0, task
))
5170 rpc_call_start(task
);
5173 static int nfs41_reclaim_complete_handle_errors(struct rpc_task
*task
, struct nfs_client
*clp
)
5175 switch(task
->tk_status
) {
5177 case -NFS4ERR_COMPLETE_ALREADY
:
5178 case -NFS4ERR_WRONG_CRED
: /* What to do here? */
5180 case -NFS4ERR_DELAY
:
5181 rpc_delay(task
, NFS4_POLL_RETRY_MAX
);
5184 nfs4_schedule_state_recovery(clp
);
5189 static void nfs4_reclaim_complete_done(struct rpc_task
*task
, void *data
)
5191 struct nfs4_reclaim_complete_data
*calldata
= data
;
5192 struct nfs_client
*clp
= calldata
->clp
;
5193 struct nfs4_sequence_res
*res
= &calldata
->res
.seq_res
;
5195 dprintk("--> %s\n", __func__
);
5196 if (!nfs41_sequence_done(task
, res
))
5199 if (nfs41_reclaim_complete_handle_errors(task
, clp
) == -EAGAIN
) {
5200 rpc_restart_call_prepare(task
);
5203 dprintk("<-- %s\n", __func__
);
5206 static void nfs4_free_reclaim_complete_data(void *data
)
5208 struct nfs4_reclaim_complete_data
*calldata
= data
;
5213 static const struct rpc_call_ops nfs4_reclaim_complete_call_ops
= {
5214 .rpc_call_prepare
= nfs4_reclaim_complete_prepare
,
5215 .rpc_call_done
= nfs4_reclaim_complete_done
,
5216 .rpc_release
= nfs4_free_reclaim_complete_data
,
5220 * Issue a global reclaim complete.
5222 static int nfs41_proc_reclaim_complete(struct nfs_client
*clp
)
5224 struct nfs4_reclaim_complete_data
*calldata
;
5225 struct rpc_task
*task
;
5226 struct rpc_message msg
= {
5227 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RECLAIM_COMPLETE
],
5229 struct rpc_task_setup task_setup_data
= {
5230 .rpc_client
= clp
->cl_rpcclient
,
5231 .rpc_message
= &msg
,
5232 .callback_ops
= &nfs4_reclaim_complete_call_ops
,
5233 .flags
= RPC_TASK_ASYNC
,
5235 int status
= -ENOMEM
;
5237 dprintk("--> %s\n", __func__
);
5238 calldata
= kzalloc(sizeof(*calldata
), GFP_NOFS
);
5239 if (calldata
== NULL
)
5241 calldata
->clp
= clp
;
5242 calldata
->arg
.one_fs
= 0;
5244 msg
.rpc_argp
= &calldata
->arg
;
5245 msg
.rpc_resp
= &calldata
->res
;
5246 task_setup_data
.callback_data
= calldata
;
5247 task
= rpc_run_task(&task_setup_data
);
5249 status
= PTR_ERR(task
);
5255 dprintk("<-- %s status=%d\n", __func__
, status
);
5258 #endif /* CONFIG_NFS_V4_1 */
5260 struct nfs4_state_recovery_ops nfs40_reboot_recovery_ops
= {
5261 .owner_flag_bit
= NFS_OWNER_RECLAIM_REBOOT
,
5262 .state_flag_bit
= NFS_STATE_RECLAIM_REBOOT
,
5263 .recover_open
= nfs4_open_reclaim
,
5264 .recover_lock
= nfs4_lock_reclaim
,
5265 .establish_clid
= nfs4_init_clientid
,
5266 .get_clid_cred
= nfs4_get_setclientid_cred
,
5269 #if defined(CONFIG_NFS_V4_1)
5270 struct nfs4_state_recovery_ops nfs41_reboot_recovery_ops
= {
5271 .owner_flag_bit
= NFS_OWNER_RECLAIM_REBOOT
,
5272 .state_flag_bit
= NFS_STATE_RECLAIM_REBOOT
,
5273 .recover_open
= nfs4_open_reclaim
,
5274 .recover_lock
= nfs4_lock_reclaim
,
5275 .establish_clid
= nfs41_init_clientid
,
5276 .get_clid_cred
= nfs4_get_exchange_id_cred
,
5277 .reclaim_complete
= nfs41_proc_reclaim_complete
,
5279 #endif /* CONFIG_NFS_V4_1 */
5281 struct nfs4_state_recovery_ops nfs40_nograce_recovery_ops
= {
5282 .owner_flag_bit
= NFS_OWNER_RECLAIM_NOGRACE
,
5283 .state_flag_bit
= NFS_STATE_RECLAIM_NOGRACE
,
5284 .recover_open
= nfs4_open_expired
,
5285 .recover_lock
= nfs4_lock_expired
,
5286 .establish_clid
= nfs4_init_clientid
,
5287 .get_clid_cred
= nfs4_get_setclientid_cred
,
5290 #if defined(CONFIG_NFS_V4_1)
5291 struct nfs4_state_recovery_ops nfs41_nograce_recovery_ops
= {
5292 .owner_flag_bit
= NFS_OWNER_RECLAIM_NOGRACE
,
5293 .state_flag_bit
= NFS_STATE_RECLAIM_NOGRACE
,
5294 .recover_open
= nfs4_open_expired
,
5295 .recover_lock
= nfs4_lock_expired
,
5296 .establish_clid
= nfs41_init_clientid
,
5297 .get_clid_cred
= nfs4_get_exchange_id_cred
,
5299 #endif /* CONFIG_NFS_V4_1 */
5301 struct nfs4_state_maintenance_ops nfs40_state_renewal_ops
= {
5302 .sched_state_renewal
= nfs4_proc_async_renew
,
5303 .get_state_renewal_cred_locked
= nfs4_get_renew_cred_locked
,
5304 .renew_lease
= nfs4_proc_renew
,
5307 #if defined(CONFIG_NFS_V4_1)
5308 struct nfs4_state_maintenance_ops nfs41_state_renewal_ops
= {
5309 .sched_state_renewal
= nfs41_proc_async_sequence
,
5310 .get_state_renewal_cred_locked
= nfs4_get_machine_cred_locked
,
5311 .renew_lease
= nfs4_proc_sequence
,
5315 static const struct nfs4_minor_version_ops nfs_v4_0_minor_ops
= {
5317 .call_sync
= _nfs4_call_sync
,
5318 .validate_stateid
= nfs4_validate_delegation_stateid
,
5319 .reboot_recovery_ops
= &nfs40_reboot_recovery_ops
,
5320 .nograce_recovery_ops
= &nfs40_nograce_recovery_ops
,
5321 .state_renewal_ops
= &nfs40_state_renewal_ops
,
5324 #if defined(CONFIG_NFS_V4_1)
5325 static const struct nfs4_minor_version_ops nfs_v4_1_minor_ops
= {
5327 .call_sync
= _nfs4_call_sync_session
,
5328 .validate_stateid
= nfs41_validate_delegation_stateid
,
5329 .reboot_recovery_ops
= &nfs41_reboot_recovery_ops
,
5330 .nograce_recovery_ops
= &nfs41_nograce_recovery_ops
,
5331 .state_renewal_ops
= &nfs41_state_renewal_ops
,
5335 const struct nfs4_minor_version_ops
*nfs_v4_minor_ops
[] = {
5336 [0] = &nfs_v4_0_minor_ops
,
5337 #if defined(CONFIG_NFS_V4_1)
5338 [1] = &nfs_v4_1_minor_ops
,
5342 static const struct inode_operations nfs4_file_inode_operations
= {
5343 .permission
= nfs_permission
,
5344 .getattr
= nfs_getattr
,
5345 .setattr
= nfs_setattr
,
5346 .getxattr
= nfs4_getxattr
,
5347 .setxattr
= nfs4_setxattr
,
5348 .listxattr
= nfs4_listxattr
,
5351 const struct nfs_rpc_ops nfs_v4_clientops
= {
5352 .version
= 4, /* protocol version */
5353 .dentry_ops
= &nfs4_dentry_operations
,
5354 .dir_inode_ops
= &nfs4_dir_inode_operations
,
5355 .file_inode_ops
= &nfs4_file_inode_operations
,
5356 .getroot
= nfs4_proc_get_root
,
5357 .getattr
= nfs4_proc_getattr
,
5358 .setattr
= nfs4_proc_setattr
,
5359 .lookupfh
= nfs4_proc_lookupfh
,
5360 .lookup
= nfs4_proc_lookup
,
5361 .access
= nfs4_proc_access
,
5362 .readlink
= nfs4_proc_readlink
,
5363 .create
= nfs4_proc_create
,
5364 .remove
= nfs4_proc_remove
,
5365 .unlink_setup
= nfs4_proc_unlink_setup
,
5366 .unlink_done
= nfs4_proc_unlink_done
,
5367 .rename
= nfs4_proc_rename
,
5368 .rename_setup
= nfs4_proc_rename_setup
,
5369 .rename_done
= nfs4_proc_rename_done
,
5370 .link
= nfs4_proc_link
,
5371 .symlink
= nfs4_proc_symlink
,
5372 .mkdir
= nfs4_proc_mkdir
,
5373 .rmdir
= nfs4_proc_remove
,
5374 .readdir
= nfs4_proc_readdir
,
5375 .mknod
= nfs4_proc_mknod
,
5376 .statfs
= nfs4_proc_statfs
,
5377 .fsinfo
= nfs4_proc_fsinfo
,
5378 .pathconf
= nfs4_proc_pathconf
,
5379 .set_capabilities
= nfs4_server_capabilities
,
5380 .decode_dirent
= nfs4_decode_dirent
,
5381 .read_setup
= nfs4_proc_read_setup
,
5382 .read_done
= nfs4_read_done
,
5383 .write_setup
= nfs4_proc_write_setup
,
5384 .write_done
= nfs4_write_done
,
5385 .commit_setup
= nfs4_proc_commit_setup
,
5386 .commit_done
= nfs4_commit_done
,
5387 .lock
= nfs4_proc_lock
,
5388 .clear_acl_cache
= nfs4_zap_acl_attr
,
5389 .close_context
= nfs4_close_context
,
5390 .open_context
= nfs4_atomic_open
,