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
:
260 nfs4_state_mark_reclaim_reboot(clp
, state
);
261 case -NFS4ERR_STALE_CLIENTID
:
262 case -NFS4ERR_EXPIRED
:
263 goto do_state_recovery
;
264 #if defined(CONFIG_NFS_V4_1)
265 case -NFS4ERR_BADSESSION
:
266 case -NFS4ERR_BADSLOT
:
267 case -NFS4ERR_BAD_HIGH_SLOT
:
268 case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION
:
269 case -NFS4ERR_DEADSESSION
:
270 case -NFS4ERR_SEQ_FALSE_RETRY
:
271 case -NFS4ERR_SEQ_MISORDERED
:
272 dprintk("%s ERROR: %d Reset session\n", __func__
,
274 nfs4_schedule_state_recovery(clp
);
275 exception
->retry
= 1;
277 #endif /* defined(CONFIG_NFS_V4_1) */
278 case -NFS4ERR_FILE_OPEN
:
279 if (exception
->timeout
> HZ
) {
280 /* We have retried a decent amount, time to
289 ret
= nfs4_delay(server
->client
, &exception
->timeout
);
292 case -NFS4ERR_OLD_STATEID
:
293 exception
->retry
= 1;
295 /* We failed to handle the error */
296 return nfs4_map_errors(ret
);
298 nfs4_schedule_state_recovery(clp
);
299 ret
= nfs4_wait_clnt_recover(clp
);
301 exception
->retry
= 1;
306 static void do_renew_lease(struct nfs_client
*clp
, unsigned long timestamp
)
308 spin_lock(&clp
->cl_lock
);
309 if (time_before(clp
->cl_last_renewal
,timestamp
))
310 clp
->cl_last_renewal
= timestamp
;
311 spin_unlock(&clp
->cl_lock
);
314 static void renew_lease(const struct nfs_server
*server
, unsigned long timestamp
)
316 do_renew_lease(server
->nfs_client
, timestamp
);
319 #if defined(CONFIG_NFS_V4_1)
322 * nfs4_free_slot - free a slot and efficiently update slot table.
324 * freeing a slot is trivially done by clearing its respective bit
326 * If the freed slotid equals highest_used_slotid we want to update it
327 * so that the server would be able to size down the slot table if needed,
328 * otherwise we know that the highest_used_slotid is still in use.
329 * When updating highest_used_slotid there may be "holes" in the bitmap
330 * so we need to scan down from highest_used_slotid to 0 looking for the now
331 * highest slotid in use.
332 * If none found, highest_used_slotid is set to -1.
334 * Must be called while holding tbl->slot_tbl_lock
337 nfs4_free_slot(struct nfs4_slot_table
*tbl
, u8 free_slotid
)
339 int slotid
= free_slotid
;
341 /* clear used bit in bitmap */
342 __clear_bit(slotid
, tbl
->used_slots
);
344 /* update highest_used_slotid when it is freed */
345 if (slotid
== tbl
->highest_used_slotid
) {
346 slotid
= find_last_bit(tbl
->used_slots
, tbl
->max_slots
);
347 if (slotid
< tbl
->max_slots
)
348 tbl
->highest_used_slotid
= slotid
;
350 tbl
->highest_used_slotid
= -1;
352 dprintk("%s: free_slotid %u highest_used_slotid %d\n", __func__
,
353 free_slotid
, tbl
->highest_used_slotid
);
357 * Signal state manager thread if session is drained
359 static void nfs41_check_drain_session_complete(struct nfs4_session
*ses
)
361 struct rpc_task
*task
;
363 if (!test_bit(NFS4_SESSION_DRAINING
, &ses
->session_state
)) {
364 task
= rpc_wake_up_next(&ses
->fc_slot_table
.slot_tbl_waitq
);
366 rpc_task_set_priority(task
, RPC_PRIORITY_PRIVILEGED
);
370 if (ses
->fc_slot_table
.highest_used_slotid
!= -1)
373 dprintk("%s COMPLETE: Session Drained\n", __func__
);
374 complete(&ses
->complete
);
377 static void nfs41_sequence_free_slot(struct nfs4_sequence_res
*res
)
379 struct nfs4_slot_table
*tbl
;
381 tbl
= &res
->sr_session
->fc_slot_table
;
382 if (res
->sr_slotid
== NFS4_MAX_SLOT_TABLE
) {
383 /* just wake up the next guy waiting since
384 * we may have not consumed a slot after all */
385 dprintk("%s: No slot\n", __func__
);
389 spin_lock(&tbl
->slot_tbl_lock
);
390 nfs4_free_slot(tbl
, res
->sr_slotid
);
391 nfs41_check_drain_session_complete(res
->sr_session
);
392 spin_unlock(&tbl
->slot_tbl_lock
);
393 res
->sr_slotid
= NFS4_MAX_SLOT_TABLE
;
396 static int nfs41_sequence_done(struct rpc_task
*task
, struct nfs4_sequence_res
*res
)
398 unsigned long timestamp
;
399 struct nfs4_slot_table
*tbl
;
400 struct nfs4_slot
*slot
;
401 struct nfs_client
*clp
;
404 * sr_status remains 1 if an RPC level error occurred. The server
405 * may or may not have processed the sequence operation..
406 * Proceed as if the server received and processed the sequence
409 if (res
->sr_status
== 1)
410 res
->sr_status
= NFS_OK
;
412 /* -ERESTARTSYS can result in skipping nfs41_sequence_setup */
413 if (res
->sr_slotid
== NFS4_MAX_SLOT_TABLE
)
416 tbl
= &res
->sr_session
->fc_slot_table
;
417 slot
= tbl
->slots
+ res
->sr_slotid
;
419 /* Check the SEQUENCE operation status */
420 switch (res
->sr_status
) {
422 /* Update the slot's sequence and clientid lease timer */
424 timestamp
= res
->sr_renewal_time
;
425 clp
= res
->sr_session
->clp
;
426 do_renew_lease(clp
, timestamp
);
427 /* Check sequence flags */
428 if (atomic_read(&clp
->cl_count
) > 1)
429 nfs41_handle_sequence_flag_errors(clp
, res
->sr_status_flags
);
432 /* The server detected a resend of the RPC call and
433 * returned NFS4ERR_DELAY as per Section 2.10.6.2
436 dprintk("%s: slot=%d seq=%d: Operation in progress\n",
437 __func__
, res
->sr_slotid
, slot
->seq_nr
);
440 /* Just update the slot sequence no. */
444 /* The session may be reset by one of the error handlers. */
445 dprintk("%s: Error %d free the slot \n", __func__
, res
->sr_status
);
446 nfs41_sequence_free_slot(res
);
449 if (!rpc_restart_call(task
))
451 rpc_delay(task
, NFS4_POLL_RETRY_MAX
);
455 static int nfs4_sequence_done(struct rpc_task
*task
,
456 struct nfs4_sequence_res
*res
)
458 if (res
->sr_session
== NULL
)
460 return nfs41_sequence_done(task
, res
);
464 * nfs4_find_slot - efficiently look for a free slot
466 * nfs4_find_slot looks for an unset bit in the used_slots bitmap.
467 * If found, we mark the slot as used, update the highest_used_slotid,
468 * and respectively set up the sequence operation args.
469 * The slot number is returned if found, or NFS4_MAX_SLOT_TABLE otherwise.
471 * Note: must be called with under the slot_tbl_lock.
474 nfs4_find_slot(struct nfs4_slot_table
*tbl
)
477 u8 ret_id
= NFS4_MAX_SLOT_TABLE
;
478 BUILD_BUG_ON((u8
)NFS4_MAX_SLOT_TABLE
!= (int)NFS4_MAX_SLOT_TABLE
);
480 dprintk("--> %s used_slots=%04lx highest_used=%d max_slots=%d\n",
481 __func__
, tbl
->used_slots
[0], tbl
->highest_used_slotid
,
483 slotid
= find_first_zero_bit(tbl
->used_slots
, tbl
->max_slots
);
484 if (slotid
>= tbl
->max_slots
)
486 __set_bit(slotid
, tbl
->used_slots
);
487 if (slotid
> tbl
->highest_used_slotid
)
488 tbl
->highest_used_slotid
= slotid
;
491 dprintk("<-- %s used_slots=%04lx highest_used=%d slotid=%d \n",
492 __func__
, tbl
->used_slots
[0], tbl
->highest_used_slotid
, ret_id
);
496 static int nfs41_setup_sequence(struct nfs4_session
*session
,
497 struct nfs4_sequence_args
*args
,
498 struct nfs4_sequence_res
*res
,
500 struct rpc_task
*task
)
502 struct nfs4_slot
*slot
;
503 struct nfs4_slot_table
*tbl
;
506 dprintk("--> %s\n", __func__
);
507 /* slot already allocated? */
508 if (res
->sr_slotid
!= NFS4_MAX_SLOT_TABLE
)
511 res
->sr_slotid
= NFS4_MAX_SLOT_TABLE
;
512 tbl
= &session
->fc_slot_table
;
514 spin_lock(&tbl
->slot_tbl_lock
);
515 if (test_bit(NFS4_SESSION_DRAINING
, &session
->session_state
) &&
516 !rpc_task_has_priority(task
, RPC_PRIORITY_PRIVILEGED
)) {
518 * The state manager will wait until the slot table is empty.
519 * Schedule the reset thread
521 rpc_sleep_on(&tbl
->slot_tbl_waitq
, task
, NULL
);
522 spin_unlock(&tbl
->slot_tbl_lock
);
523 dprintk("%s Schedule Session Reset\n", __func__
);
527 if (!rpc_queue_empty(&tbl
->slot_tbl_waitq
) &&
528 !rpc_task_has_priority(task
, RPC_PRIORITY_PRIVILEGED
)) {
529 rpc_sleep_on(&tbl
->slot_tbl_waitq
, task
, NULL
);
530 spin_unlock(&tbl
->slot_tbl_lock
);
531 dprintk("%s enforce FIFO order\n", __func__
);
535 slotid
= nfs4_find_slot(tbl
);
536 if (slotid
== NFS4_MAX_SLOT_TABLE
) {
537 rpc_sleep_on(&tbl
->slot_tbl_waitq
, task
, NULL
);
538 spin_unlock(&tbl
->slot_tbl_lock
);
539 dprintk("<-- %s: no free slots\n", __func__
);
542 spin_unlock(&tbl
->slot_tbl_lock
);
544 rpc_task_set_priority(task
, RPC_PRIORITY_NORMAL
);
545 slot
= tbl
->slots
+ slotid
;
546 args
->sa_session
= session
;
547 args
->sa_slotid
= slotid
;
548 args
->sa_cache_this
= cache_reply
;
550 dprintk("<-- %s slotid=%d seqid=%d\n", __func__
, slotid
, slot
->seq_nr
);
552 res
->sr_session
= session
;
553 res
->sr_slotid
= slotid
;
554 res
->sr_renewal_time
= jiffies
;
555 res
->sr_status_flags
= 0;
557 * sr_status is only set in decode_sequence, and so will remain
558 * set to 1 if an rpc level failure occurs.
564 int nfs4_setup_sequence(const struct nfs_server
*server
,
565 struct nfs4_sequence_args
*args
,
566 struct nfs4_sequence_res
*res
,
568 struct rpc_task
*task
)
570 struct nfs4_session
*session
= nfs4_get_session(server
);
573 if (session
== NULL
) {
574 args
->sa_session
= NULL
;
575 res
->sr_session
= NULL
;
579 dprintk("--> %s clp %p session %p sr_slotid %d\n",
580 __func__
, session
->clp
, session
, res
->sr_slotid
);
582 ret
= nfs41_setup_sequence(session
, args
, res
, cache_reply
,
585 dprintk("<-- %s status=%d\n", __func__
, ret
);
589 struct nfs41_call_sync_data
{
590 const struct nfs_server
*seq_server
;
591 struct nfs4_sequence_args
*seq_args
;
592 struct nfs4_sequence_res
*seq_res
;
596 static void nfs41_call_sync_prepare(struct rpc_task
*task
, void *calldata
)
598 struct nfs41_call_sync_data
*data
= calldata
;
600 dprintk("--> %s data->seq_server %p\n", __func__
, data
->seq_server
);
602 if (nfs4_setup_sequence(data
->seq_server
, data
->seq_args
,
603 data
->seq_res
, data
->cache_reply
, task
))
605 rpc_call_start(task
);
608 static void nfs41_call_priv_sync_prepare(struct rpc_task
*task
, void *calldata
)
610 rpc_task_set_priority(task
, RPC_PRIORITY_PRIVILEGED
);
611 nfs41_call_sync_prepare(task
, calldata
);
614 static void nfs41_call_sync_done(struct rpc_task
*task
, void *calldata
)
616 struct nfs41_call_sync_data
*data
= calldata
;
618 nfs41_sequence_done(task
, data
->seq_res
);
621 struct rpc_call_ops nfs41_call_sync_ops
= {
622 .rpc_call_prepare
= nfs41_call_sync_prepare
,
623 .rpc_call_done
= nfs41_call_sync_done
,
626 struct rpc_call_ops nfs41_call_priv_sync_ops
= {
627 .rpc_call_prepare
= nfs41_call_priv_sync_prepare
,
628 .rpc_call_done
= nfs41_call_sync_done
,
631 static int nfs4_call_sync_sequence(struct nfs_server
*server
,
632 struct rpc_message
*msg
,
633 struct nfs4_sequence_args
*args
,
634 struct nfs4_sequence_res
*res
,
639 struct rpc_task
*task
;
640 struct nfs41_call_sync_data data
= {
641 .seq_server
= server
,
644 .cache_reply
= cache_reply
,
646 struct rpc_task_setup task_setup
= {
647 .rpc_client
= server
->client
,
649 .callback_ops
= &nfs41_call_sync_ops
,
650 .callback_data
= &data
653 res
->sr_slotid
= NFS4_MAX_SLOT_TABLE
;
655 task_setup
.callback_ops
= &nfs41_call_priv_sync_ops
;
656 task
= rpc_run_task(&task_setup
);
660 ret
= task
->tk_status
;
666 int _nfs4_call_sync_session(struct nfs_server
*server
,
667 struct rpc_message
*msg
,
668 struct nfs4_sequence_args
*args
,
669 struct nfs4_sequence_res
*res
,
672 return nfs4_call_sync_sequence(server
, msg
, args
, res
, cache_reply
, 0);
676 static int nfs4_sequence_done(struct rpc_task
*task
,
677 struct nfs4_sequence_res
*res
)
681 #endif /* CONFIG_NFS_V4_1 */
683 int _nfs4_call_sync(struct nfs_server
*server
,
684 struct rpc_message
*msg
,
685 struct nfs4_sequence_args
*args
,
686 struct nfs4_sequence_res
*res
,
689 args
->sa_session
= res
->sr_session
= NULL
;
690 return rpc_call_sync(server
->client
, msg
, 0);
693 #define nfs4_call_sync(server, msg, args, res, cache_reply) \
694 (server)->nfs_client->cl_mvops->call_sync((server), (msg), &(args)->seq_args, \
695 &(res)->seq_res, (cache_reply))
697 static void update_changeattr(struct inode
*dir
, struct nfs4_change_info
*cinfo
)
699 struct nfs_inode
*nfsi
= NFS_I(dir
);
701 spin_lock(&dir
->i_lock
);
702 nfsi
->cache_validity
|= NFS_INO_INVALID_ATTR
|NFS_INO_REVAL_PAGECACHE
|NFS_INO_INVALID_DATA
;
703 if (!cinfo
->atomic
|| cinfo
->before
!= nfsi
->change_attr
)
704 nfs_force_lookup_revalidate(dir
);
705 nfsi
->change_attr
= cinfo
->after
;
706 spin_unlock(&dir
->i_lock
);
709 struct nfs4_opendata
{
711 struct nfs_openargs o_arg
;
712 struct nfs_openres o_res
;
713 struct nfs_open_confirmargs c_arg
;
714 struct nfs_open_confirmres c_res
;
715 struct nfs_fattr f_attr
;
716 struct nfs_fattr dir_attr
;
719 struct nfs4_state_owner
*owner
;
720 struct nfs4_state
*state
;
722 unsigned long timestamp
;
723 unsigned int rpc_done
: 1;
729 static void nfs4_init_opendata_res(struct nfs4_opendata
*p
)
731 p
->o_res
.f_attr
= &p
->f_attr
;
732 p
->o_res
.dir_attr
= &p
->dir_attr
;
733 p
->o_res
.seqid
= p
->o_arg
.seqid
;
734 p
->c_res
.seqid
= p
->c_arg
.seqid
;
735 p
->o_res
.server
= p
->o_arg
.server
;
736 nfs_fattr_init(&p
->f_attr
);
737 nfs_fattr_init(&p
->dir_attr
);
738 p
->o_res
.seq_res
.sr_slotid
= NFS4_MAX_SLOT_TABLE
;
741 static struct nfs4_opendata
*nfs4_opendata_alloc(struct path
*path
,
742 struct nfs4_state_owner
*sp
, fmode_t fmode
, int flags
,
743 const struct iattr
*attrs
,
746 struct dentry
*parent
= dget_parent(path
->dentry
);
747 struct inode
*dir
= parent
->d_inode
;
748 struct nfs_server
*server
= NFS_SERVER(dir
);
749 struct nfs4_opendata
*p
;
751 p
= kzalloc(sizeof(*p
), gfp_mask
);
754 p
->o_arg
.seqid
= nfs_alloc_seqid(&sp
->so_seqid
, gfp_mask
);
755 if (p
->o_arg
.seqid
== NULL
)
761 atomic_inc(&sp
->so_count
);
762 p
->o_arg
.fh
= NFS_FH(dir
);
763 p
->o_arg
.open_flags
= flags
;
764 p
->o_arg
.fmode
= fmode
& (FMODE_READ
|FMODE_WRITE
);
765 p
->o_arg
.clientid
= server
->nfs_client
->cl_clientid
;
766 p
->o_arg
.id
= sp
->so_owner_id
.id
;
767 p
->o_arg
.name
= &p
->path
.dentry
->d_name
;
768 p
->o_arg
.server
= server
;
769 p
->o_arg
.bitmask
= server
->attr_bitmask
;
770 p
->o_arg
.claim
= NFS4_OPEN_CLAIM_NULL
;
771 if (flags
& O_CREAT
) {
774 p
->o_arg
.u
.attrs
= &p
->attrs
;
775 memcpy(&p
->attrs
, attrs
, sizeof(p
->attrs
));
776 s
= (u32
*) p
->o_arg
.u
.verifier
.data
;
780 p
->c_arg
.fh
= &p
->o_res
.fh
;
781 p
->c_arg
.stateid
= &p
->o_res
.stateid
;
782 p
->c_arg
.seqid
= p
->o_arg
.seqid
;
783 nfs4_init_opendata_res(p
);
793 static void nfs4_opendata_free(struct kref
*kref
)
795 struct nfs4_opendata
*p
= container_of(kref
,
796 struct nfs4_opendata
, kref
);
798 nfs_free_seqid(p
->o_arg
.seqid
);
799 if (p
->state
!= NULL
)
800 nfs4_put_open_state(p
->state
);
801 nfs4_put_state_owner(p
->owner
);
807 static void nfs4_opendata_put(struct nfs4_opendata
*p
)
810 kref_put(&p
->kref
, nfs4_opendata_free
);
813 static int nfs4_wait_for_completion_rpc_task(struct rpc_task
*task
)
817 ret
= rpc_wait_for_completion_task(task
);
821 static int can_open_cached(struct nfs4_state
*state
, fmode_t mode
, int open_mode
)
825 if (open_mode
& O_EXCL
)
827 switch (mode
& (FMODE_READ
|FMODE_WRITE
)) {
829 ret
|= test_bit(NFS_O_RDONLY_STATE
, &state
->flags
) != 0
830 && state
->n_rdonly
!= 0;
833 ret
|= test_bit(NFS_O_WRONLY_STATE
, &state
->flags
) != 0
834 && state
->n_wronly
!= 0;
836 case FMODE_READ
|FMODE_WRITE
:
837 ret
|= test_bit(NFS_O_RDWR_STATE
, &state
->flags
) != 0
838 && state
->n_rdwr
!= 0;
844 static int can_open_delegated(struct nfs_delegation
*delegation
, fmode_t fmode
)
846 if ((delegation
->type
& fmode
) != fmode
)
848 if (test_bit(NFS_DELEGATION_NEED_RECLAIM
, &delegation
->flags
))
850 nfs_mark_delegation_referenced(delegation
);
854 static void update_open_stateflags(struct nfs4_state
*state
, fmode_t fmode
)
863 case FMODE_READ
|FMODE_WRITE
:
866 nfs4_state_set_mode_locked(state
, state
->state
| fmode
);
869 static void nfs_set_open_stateid_locked(struct nfs4_state
*state
, nfs4_stateid
*stateid
, fmode_t fmode
)
871 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) == 0)
872 memcpy(state
->stateid
.data
, stateid
->data
, sizeof(state
->stateid
.data
));
873 memcpy(state
->open_stateid
.data
, stateid
->data
, sizeof(state
->open_stateid
.data
));
876 set_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
879 set_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
881 case FMODE_READ
|FMODE_WRITE
:
882 set_bit(NFS_O_RDWR_STATE
, &state
->flags
);
886 static void nfs_set_open_stateid(struct nfs4_state
*state
, nfs4_stateid
*stateid
, fmode_t fmode
)
888 write_seqlock(&state
->seqlock
);
889 nfs_set_open_stateid_locked(state
, stateid
, fmode
);
890 write_sequnlock(&state
->seqlock
);
893 static void __update_open_stateid(struct nfs4_state
*state
, nfs4_stateid
*open_stateid
, const nfs4_stateid
*deleg_stateid
, fmode_t fmode
)
896 * Protect the call to nfs4_state_set_mode_locked and
897 * serialise the stateid update
899 write_seqlock(&state
->seqlock
);
900 if (deleg_stateid
!= NULL
) {
901 memcpy(state
->stateid
.data
, deleg_stateid
->data
, sizeof(state
->stateid
.data
));
902 set_bit(NFS_DELEGATED_STATE
, &state
->flags
);
904 if (open_stateid
!= NULL
)
905 nfs_set_open_stateid_locked(state
, open_stateid
, fmode
);
906 write_sequnlock(&state
->seqlock
);
907 spin_lock(&state
->owner
->so_lock
);
908 update_open_stateflags(state
, fmode
);
909 spin_unlock(&state
->owner
->so_lock
);
912 static int update_open_stateid(struct nfs4_state
*state
, nfs4_stateid
*open_stateid
, nfs4_stateid
*delegation
, fmode_t fmode
)
914 struct nfs_inode
*nfsi
= NFS_I(state
->inode
);
915 struct nfs_delegation
*deleg_cur
;
918 fmode
&= (FMODE_READ
|FMODE_WRITE
);
921 deleg_cur
= rcu_dereference(nfsi
->delegation
);
922 if (deleg_cur
== NULL
)
925 spin_lock(&deleg_cur
->lock
);
926 if (nfsi
->delegation
!= deleg_cur
||
927 (deleg_cur
->type
& fmode
) != fmode
)
928 goto no_delegation_unlock
;
930 if (delegation
== NULL
)
931 delegation
= &deleg_cur
->stateid
;
932 else if (memcmp(deleg_cur
->stateid
.data
, delegation
->data
, NFS4_STATEID_SIZE
) != 0)
933 goto no_delegation_unlock
;
935 nfs_mark_delegation_referenced(deleg_cur
);
936 __update_open_stateid(state
, open_stateid
, &deleg_cur
->stateid
, fmode
);
938 no_delegation_unlock
:
939 spin_unlock(&deleg_cur
->lock
);
943 if (!ret
&& open_stateid
!= NULL
) {
944 __update_open_stateid(state
, open_stateid
, NULL
, fmode
);
952 static void nfs4_return_incompatible_delegation(struct inode
*inode
, fmode_t fmode
)
954 struct nfs_delegation
*delegation
;
957 delegation
= rcu_dereference(NFS_I(inode
)->delegation
);
958 if (delegation
== NULL
|| (delegation
->type
& fmode
) == fmode
) {
963 nfs_inode_return_delegation(inode
);
966 static struct nfs4_state
*nfs4_try_open_cached(struct nfs4_opendata
*opendata
)
968 struct nfs4_state
*state
= opendata
->state
;
969 struct nfs_inode
*nfsi
= NFS_I(state
->inode
);
970 struct nfs_delegation
*delegation
;
971 int open_mode
= opendata
->o_arg
.open_flags
& O_EXCL
;
972 fmode_t fmode
= opendata
->o_arg
.fmode
;
973 nfs4_stateid stateid
;
977 if (can_open_cached(state
, fmode
, open_mode
)) {
978 spin_lock(&state
->owner
->so_lock
);
979 if (can_open_cached(state
, fmode
, open_mode
)) {
980 update_open_stateflags(state
, fmode
);
981 spin_unlock(&state
->owner
->so_lock
);
982 goto out_return_state
;
984 spin_unlock(&state
->owner
->so_lock
);
987 delegation
= rcu_dereference(nfsi
->delegation
);
988 if (delegation
== NULL
||
989 !can_open_delegated(delegation
, fmode
)) {
993 /* Save the delegation */
994 memcpy(stateid
.data
, delegation
->stateid
.data
, sizeof(stateid
.data
));
996 ret
= nfs_may_open(state
->inode
, state
->owner
->so_cred
, open_mode
);
1001 /* Try to update the stateid using the delegation */
1002 if (update_open_stateid(state
, NULL
, &stateid
, fmode
))
1003 goto out_return_state
;
1006 return ERR_PTR(ret
);
1008 atomic_inc(&state
->count
);
1012 static struct nfs4_state
*nfs4_opendata_to_nfs4_state(struct nfs4_opendata
*data
)
1014 struct inode
*inode
;
1015 struct nfs4_state
*state
= NULL
;
1016 struct nfs_delegation
*delegation
;
1019 if (!data
->rpc_done
) {
1020 state
= nfs4_try_open_cached(data
);
1025 if (!(data
->f_attr
.valid
& NFS_ATTR_FATTR
))
1027 inode
= nfs_fhget(data
->dir
->d_sb
, &data
->o_res
.fh
, &data
->f_attr
);
1028 ret
= PTR_ERR(inode
);
1032 state
= nfs4_get_open_state(inode
, data
->owner
);
1035 if (data
->o_res
.delegation_type
!= 0) {
1036 int delegation_flags
= 0;
1039 delegation
= rcu_dereference(NFS_I(inode
)->delegation
);
1041 delegation_flags
= delegation
->flags
;
1043 if ((delegation_flags
& 1UL<<NFS_DELEGATION_NEED_RECLAIM
) == 0)
1044 nfs_inode_set_delegation(state
->inode
,
1045 data
->owner
->so_cred
,
1048 nfs_inode_reclaim_delegation(state
->inode
,
1049 data
->owner
->so_cred
,
1053 update_open_stateid(state
, &data
->o_res
.stateid
, NULL
,
1061 return ERR_PTR(ret
);
1064 static struct nfs_open_context
*nfs4_state_find_open_context(struct nfs4_state
*state
)
1066 struct nfs_inode
*nfsi
= NFS_I(state
->inode
);
1067 struct nfs_open_context
*ctx
;
1069 spin_lock(&state
->inode
->i_lock
);
1070 list_for_each_entry(ctx
, &nfsi
->open_files
, list
) {
1071 if (ctx
->state
!= state
)
1073 get_nfs_open_context(ctx
);
1074 spin_unlock(&state
->inode
->i_lock
);
1077 spin_unlock(&state
->inode
->i_lock
);
1078 return ERR_PTR(-ENOENT
);
1081 static struct nfs4_opendata
*nfs4_open_recoverdata_alloc(struct nfs_open_context
*ctx
, struct nfs4_state
*state
)
1083 struct nfs4_opendata
*opendata
;
1085 opendata
= nfs4_opendata_alloc(&ctx
->path
, state
->owner
, 0, 0, NULL
, GFP_NOFS
);
1086 if (opendata
== NULL
)
1087 return ERR_PTR(-ENOMEM
);
1088 opendata
->state
= state
;
1089 atomic_inc(&state
->count
);
1093 static int nfs4_open_recover_helper(struct nfs4_opendata
*opendata
, fmode_t fmode
, struct nfs4_state
**res
)
1095 struct nfs4_state
*newstate
;
1098 opendata
->o_arg
.open_flags
= 0;
1099 opendata
->o_arg
.fmode
= fmode
;
1100 memset(&opendata
->o_res
, 0, sizeof(opendata
->o_res
));
1101 memset(&opendata
->c_res
, 0, sizeof(opendata
->c_res
));
1102 nfs4_init_opendata_res(opendata
);
1103 ret
= _nfs4_recover_proc_open(opendata
);
1106 newstate
= nfs4_opendata_to_nfs4_state(opendata
);
1107 if (IS_ERR(newstate
))
1108 return PTR_ERR(newstate
);
1109 nfs4_close_state(&opendata
->path
, newstate
, fmode
);
1114 static int nfs4_open_recover(struct nfs4_opendata
*opendata
, struct nfs4_state
*state
)
1116 struct nfs4_state
*newstate
;
1119 /* memory barrier prior to reading state->n_* */
1120 clear_bit(NFS_DELEGATED_STATE
, &state
->flags
);
1122 if (state
->n_rdwr
!= 0) {
1123 ret
= nfs4_open_recover_helper(opendata
, FMODE_READ
|FMODE_WRITE
, &newstate
);
1126 if (newstate
!= state
)
1129 if (state
->n_wronly
!= 0) {
1130 ret
= nfs4_open_recover_helper(opendata
, FMODE_WRITE
, &newstate
);
1133 if (newstate
!= state
)
1136 if (state
->n_rdonly
!= 0) {
1137 ret
= nfs4_open_recover_helper(opendata
, FMODE_READ
, &newstate
);
1140 if (newstate
!= state
)
1144 * We may have performed cached opens for all three recoveries.
1145 * Check if we need to update the current stateid.
1147 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) == 0 &&
1148 memcmp(state
->stateid
.data
, state
->open_stateid
.data
, sizeof(state
->stateid
.data
)) != 0) {
1149 write_seqlock(&state
->seqlock
);
1150 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) == 0)
1151 memcpy(state
->stateid
.data
, state
->open_stateid
.data
, sizeof(state
->stateid
.data
));
1152 write_sequnlock(&state
->seqlock
);
1159 * reclaim state on the server after a reboot.
1161 static int _nfs4_do_open_reclaim(struct nfs_open_context
*ctx
, struct nfs4_state
*state
)
1163 struct nfs_delegation
*delegation
;
1164 struct nfs4_opendata
*opendata
;
1165 fmode_t delegation_type
= 0;
1168 opendata
= nfs4_open_recoverdata_alloc(ctx
, state
);
1169 if (IS_ERR(opendata
))
1170 return PTR_ERR(opendata
);
1171 opendata
->o_arg
.claim
= NFS4_OPEN_CLAIM_PREVIOUS
;
1172 opendata
->o_arg
.fh
= NFS_FH(state
->inode
);
1174 delegation
= rcu_dereference(NFS_I(state
->inode
)->delegation
);
1175 if (delegation
!= NULL
&& test_bit(NFS_DELEGATION_NEED_RECLAIM
, &delegation
->flags
) != 0)
1176 delegation_type
= delegation
->type
;
1178 opendata
->o_arg
.u
.delegation_type
= delegation_type
;
1179 status
= nfs4_open_recover(opendata
, state
);
1180 nfs4_opendata_put(opendata
);
1184 static int nfs4_do_open_reclaim(struct nfs_open_context
*ctx
, struct nfs4_state
*state
)
1186 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
1187 struct nfs4_exception exception
= { };
1190 err
= _nfs4_do_open_reclaim(ctx
, state
);
1191 if (err
!= -NFS4ERR_DELAY
&& err
!= -EKEYEXPIRED
)
1193 nfs4_handle_exception(server
, err
, &exception
);
1194 } while (exception
.retry
);
1198 static int nfs4_open_reclaim(struct nfs4_state_owner
*sp
, struct nfs4_state
*state
)
1200 struct nfs_open_context
*ctx
;
1203 ctx
= nfs4_state_find_open_context(state
);
1205 return PTR_ERR(ctx
);
1206 ret
= nfs4_do_open_reclaim(ctx
, state
);
1207 put_nfs_open_context(ctx
);
1211 static int _nfs4_open_delegation_recall(struct nfs_open_context
*ctx
, struct nfs4_state
*state
, const nfs4_stateid
*stateid
)
1213 struct nfs4_opendata
*opendata
;
1216 opendata
= nfs4_open_recoverdata_alloc(ctx
, state
);
1217 if (IS_ERR(opendata
))
1218 return PTR_ERR(opendata
);
1219 opendata
->o_arg
.claim
= NFS4_OPEN_CLAIM_DELEGATE_CUR
;
1220 memcpy(opendata
->o_arg
.u
.delegation
.data
, stateid
->data
,
1221 sizeof(opendata
->o_arg
.u
.delegation
.data
));
1222 ret
= nfs4_open_recover(opendata
, state
);
1223 nfs4_opendata_put(opendata
);
1227 int nfs4_open_delegation_recall(struct nfs_open_context
*ctx
, struct nfs4_state
*state
, const nfs4_stateid
*stateid
)
1229 struct nfs4_exception exception
= { };
1230 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
1233 err
= _nfs4_open_delegation_recall(ctx
, state
, stateid
);
1239 case -NFS4ERR_BADSESSION
:
1240 case -NFS4ERR_BADSLOT
:
1241 case -NFS4ERR_BAD_HIGH_SLOT
:
1242 case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION
:
1243 case -NFS4ERR_DEADSESSION
:
1244 nfs4_schedule_state_recovery(
1245 server
->nfs_client
);
1247 case -NFS4ERR_STALE_CLIENTID
:
1248 case -NFS4ERR_STALE_STATEID
:
1249 case -NFS4ERR_EXPIRED
:
1250 /* Don't recall a delegation if it was lost */
1251 nfs4_schedule_state_recovery(server
->nfs_client
);
1255 * The show must go on: exit, but mark the
1256 * stateid as needing recovery.
1258 case -NFS4ERR_ADMIN_REVOKED
:
1259 case -NFS4ERR_BAD_STATEID
:
1260 nfs4_state_mark_reclaim_nograce(server
->nfs_client
, state
);
1265 err
= nfs4_handle_exception(server
, err
, &exception
);
1266 } while (exception
.retry
);
1271 static void nfs4_open_confirm_done(struct rpc_task
*task
, void *calldata
)
1273 struct nfs4_opendata
*data
= calldata
;
1275 data
->rpc_status
= task
->tk_status
;
1276 if (data
->rpc_status
== 0) {
1277 memcpy(data
->o_res
.stateid
.data
, data
->c_res
.stateid
.data
,
1278 sizeof(data
->o_res
.stateid
.data
));
1279 nfs_confirm_seqid(&data
->owner
->so_seqid
, 0);
1280 renew_lease(data
->o_res
.server
, data
->timestamp
);
1285 static void nfs4_open_confirm_release(void *calldata
)
1287 struct nfs4_opendata
*data
= calldata
;
1288 struct nfs4_state
*state
= NULL
;
1290 /* If this request hasn't been cancelled, do nothing */
1291 if (data
->cancelled
== 0)
1293 /* In case of error, no cleanup! */
1294 if (!data
->rpc_done
)
1296 state
= nfs4_opendata_to_nfs4_state(data
);
1298 nfs4_close_state(&data
->path
, state
, data
->o_arg
.fmode
);
1300 nfs4_opendata_put(data
);
1303 static const struct rpc_call_ops nfs4_open_confirm_ops
= {
1304 .rpc_call_done
= nfs4_open_confirm_done
,
1305 .rpc_release
= nfs4_open_confirm_release
,
1309 * Note: On error, nfs4_proc_open_confirm will free the struct nfs4_opendata
1311 static int _nfs4_proc_open_confirm(struct nfs4_opendata
*data
)
1313 struct nfs_server
*server
= NFS_SERVER(data
->dir
->d_inode
);
1314 struct rpc_task
*task
;
1315 struct rpc_message msg
= {
1316 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_OPEN_CONFIRM
],
1317 .rpc_argp
= &data
->c_arg
,
1318 .rpc_resp
= &data
->c_res
,
1319 .rpc_cred
= data
->owner
->so_cred
,
1321 struct rpc_task_setup task_setup_data
= {
1322 .rpc_client
= server
->client
,
1323 .rpc_message
= &msg
,
1324 .callback_ops
= &nfs4_open_confirm_ops
,
1325 .callback_data
= data
,
1326 .workqueue
= nfsiod_workqueue
,
1327 .flags
= RPC_TASK_ASYNC
,
1331 kref_get(&data
->kref
);
1333 data
->rpc_status
= 0;
1334 data
->timestamp
= jiffies
;
1335 task
= rpc_run_task(&task_setup_data
);
1337 return PTR_ERR(task
);
1338 status
= nfs4_wait_for_completion_rpc_task(task
);
1340 data
->cancelled
= 1;
1343 status
= data
->rpc_status
;
1348 static void nfs4_open_prepare(struct rpc_task
*task
, void *calldata
)
1350 struct nfs4_opendata
*data
= calldata
;
1351 struct nfs4_state_owner
*sp
= data
->owner
;
1353 if (nfs_wait_on_sequence(data
->o_arg
.seqid
, task
) != 0)
1356 * Check if we still need to send an OPEN call, or if we can use
1357 * a delegation instead.
1359 if (data
->state
!= NULL
) {
1360 struct nfs_delegation
*delegation
;
1362 if (can_open_cached(data
->state
, data
->o_arg
.fmode
, data
->o_arg
.open_flags
))
1365 delegation
= rcu_dereference(NFS_I(data
->state
->inode
)->delegation
);
1366 if (delegation
!= NULL
&&
1367 test_bit(NFS_DELEGATION_NEED_RECLAIM
, &delegation
->flags
) == 0) {
1373 /* Update sequence id. */
1374 data
->o_arg
.id
= sp
->so_owner_id
.id
;
1375 data
->o_arg
.clientid
= sp
->so_server
->nfs_client
->cl_clientid
;
1376 if (data
->o_arg
.claim
== NFS4_OPEN_CLAIM_PREVIOUS
) {
1377 task
->tk_msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_OPEN_NOATTR
];
1378 nfs_copy_fh(&data
->o_res
.fh
, data
->o_arg
.fh
);
1380 data
->timestamp
= jiffies
;
1381 if (nfs4_setup_sequence(data
->o_arg
.server
,
1382 &data
->o_arg
.seq_args
,
1383 &data
->o_res
.seq_res
, 1, task
))
1385 rpc_call_start(task
);
1388 task
->tk_action
= NULL
;
1392 static void nfs4_recover_open_prepare(struct rpc_task
*task
, void *calldata
)
1394 rpc_task_set_priority(task
, RPC_PRIORITY_PRIVILEGED
);
1395 nfs4_open_prepare(task
, calldata
);
1398 static void nfs4_open_done(struct rpc_task
*task
, void *calldata
)
1400 struct nfs4_opendata
*data
= calldata
;
1402 data
->rpc_status
= task
->tk_status
;
1404 if (!nfs4_sequence_done(task
, &data
->o_res
.seq_res
))
1407 if (task
->tk_status
== 0) {
1408 switch (data
->o_res
.f_attr
->mode
& S_IFMT
) {
1412 data
->rpc_status
= -ELOOP
;
1415 data
->rpc_status
= -EISDIR
;
1418 data
->rpc_status
= -ENOTDIR
;
1420 renew_lease(data
->o_res
.server
, data
->timestamp
);
1421 if (!(data
->o_res
.rflags
& NFS4_OPEN_RESULT_CONFIRM
))
1422 nfs_confirm_seqid(&data
->owner
->so_seqid
, 0);
1427 static void nfs4_open_release(void *calldata
)
1429 struct nfs4_opendata
*data
= calldata
;
1430 struct nfs4_state
*state
= NULL
;
1432 /* If this request hasn't been cancelled, do nothing */
1433 if (data
->cancelled
== 0)
1435 /* In case of error, no cleanup! */
1436 if (data
->rpc_status
!= 0 || !data
->rpc_done
)
1438 /* In case we need an open_confirm, no cleanup! */
1439 if (data
->o_res
.rflags
& NFS4_OPEN_RESULT_CONFIRM
)
1441 state
= nfs4_opendata_to_nfs4_state(data
);
1443 nfs4_close_state(&data
->path
, state
, data
->o_arg
.fmode
);
1445 nfs4_opendata_put(data
);
1448 static const struct rpc_call_ops nfs4_open_ops
= {
1449 .rpc_call_prepare
= nfs4_open_prepare
,
1450 .rpc_call_done
= nfs4_open_done
,
1451 .rpc_release
= nfs4_open_release
,
1454 static const struct rpc_call_ops nfs4_recover_open_ops
= {
1455 .rpc_call_prepare
= nfs4_recover_open_prepare
,
1456 .rpc_call_done
= nfs4_open_done
,
1457 .rpc_release
= nfs4_open_release
,
1460 static int nfs4_run_open_task(struct nfs4_opendata
*data
, int isrecover
)
1462 struct inode
*dir
= data
->dir
->d_inode
;
1463 struct nfs_server
*server
= NFS_SERVER(dir
);
1464 struct nfs_openargs
*o_arg
= &data
->o_arg
;
1465 struct nfs_openres
*o_res
= &data
->o_res
;
1466 struct rpc_task
*task
;
1467 struct rpc_message msg
= {
1468 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_OPEN
],
1471 .rpc_cred
= data
->owner
->so_cred
,
1473 struct rpc_task_setup task_setup_data
= {
1474 .rpc_client
= server
->client
,
1475 .rpc_message
= &msg
,
1476 .callback_ops
= &nfs4_open_ops
,
1477 .callback_data
= data
,
1478 .workqueue
= nfsiod_workqueue
,
1479 .flags
= RPC_TASK_ASYNC
,
1483 kref_get(&data
->kref
);
1485 data
->rpc_status
= 0;
1486 data
->cancelled
= 0;
1488 task_setup_data
.callback_ops
= &nfs4_recover_open_ops
;
1489 task
= rpc_run_task(&task_setup_data
);
1491 return PTR_ERR(task
);
1492 status
= nfs4_wait_for_completion_rpc_task(task
);
1494 data
->cancelled
= 1;
1497 status
= data
->rpc_status
;
1503 static int _nfs4_recover_proc_open(struct nfs4_opendata
*data
)
1505 struct inode
*dir
= data
->dir
->d_inode
;
1506 struct nfs_openres
*o_res
= &data
->o_res
;
1509 status
= nfs4_run_open_task(data
, 1);
1510 if (status
!= 0 || !data
->rpc_done
)
1513 nfs_refresh_inode(dir
, o_res
->dir_attr
);
1515 if (o_res
->rflags
& NFS4_OPEN_RESULT_CONFIRM
) {
1516 status
= _nfs4_proc_open_confirm(data
);
1525 * Note: On error, nfs4_proc_open will free the struct nfs4_opendata
1527 static int _nfs4_proc_open(struct nfs4_opendata
*data
)
1529 struct inode
*dir
= data
->dir
->d_inode
;
1530 struct nfs_server
*server
= NFS_SERVER(dir
);
1531 struct nfs_openargs
*o_arg
= &data
->o_arg
;
1532 struct nfs_openres
*o_res
= &data
->o_res
;
1535 status
= nfs4_run_open_task(data
, 0);
1536 if (status
!= 0 || !data
->rpc_done
)
1539 if (o_arg
->open_flags
& O_CREAT
) {
1540 update_changeattr(dir
, &o_res
->cinfo
);
1541 nfs_post_op_update_inode(dir
, o_res
->dir_attr
);
1543 nfs_refresh_inode(dir
, o_res
->dir_attr
);
1544 if ((o_res
->rflags
& NFS4_OPEN_RESULT_LOCKTYPE_POSIX
) == 0)
1545 server
->caps
&= ~NFS_CAP_POSIX_LOCK
;
1546 if(o_res
->rflags
& NFS4_OPEN_RESULT_CONFIRM
) {
1547 status
= _nfs4_proc_open_confirm(data
);
1551 if (!(o_res
->f_attr
->valid
& NFS_ATTR_FATTR
))
1552 _nfs4_proc_getattr(server
, &o_res
->fh
, o_res
->f_attr
);
1556 static int nfs4_recover_expired_lease(struct nfs_server
*server
)
1558 struct nfs_client
*clp
= server
->nfs_client
;
1562 for (loop
= NFS4_MAX_LOOP_ON_RECOVER
; loop
!= 0; loop
--) {
1563 ret
= nfs4_wait_clnt_recover(clp
);
1566 if (!test_bit(NFS4CLNT_LEASE_EXPIRED
, &clp
->cl_state
) &&
1567 !test_bit(NFS4CLNT_CHECK_LEASE
,&clp
->cl_state
))
1569 nfs4_schedule_state_recovery(clp
);
1577 * reclaim state on the server after a network partition.
1578 * Assumes caller holds the appropriate lock
1580 static int _nfs4_open_expired(struct nfs_open_context
*ctx
, struct nfs4_state
*state
)
1582 struct nfs4_opendata
*opendata
;
1585 opendata
= nfs4_open_recoverdata_alloc(ctx
, state
);
1586 if (IS_ERR(opendata
))
1587 return PTR_ERR(opendata
);
1588 ret
= nfs4_open_recover(opendata
, state
);
1590 d_drop(ctx
->path
.dentry
);
1591 nfs4_opendata_put(opendata
);
1595 static int nfs4_do_open_expired(struct nfs_open_context
*ctx
, struct nfs4_state
*state
)
1597 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
1598 struct nfs4_exception exception
= { };
1602 err
= _nfs4_open_expired(ctx
, state
);
1606 case -NFS4ERR_GRACE
:
1607 case -NFS4ERR_DELAY
:
1609 nfs4_handle_exception(server
, err
, &exception
);
1612 } while (exception
.retry
);
1617 static int nfs4_open_expired(struct nfs4_state_owner
*sp
, struct nfs4_state
*state
)
1619 struct nfs_open_context
*ctx
;
1622 ctx
= nfs4_state_find_open_context(state
);
1624 return PTR_ERR(ctx
);
1625 ret
= nfs4_do_open_expired(ctx
, state
);
1626 put_nfs_open_context(ctx
);
1631 * on an EXCLUSIVE create, the server should send back a bitmask with FATTR4-*
1632 * fields corresponding to attributes that were used to store the verifier.
1633 * Make sure we clobber those fields in the later setattr call
1635 static inline void nfs4_exclusive_attrset(struct nfs4_opendata
*opendata
, struct iattr
*sattr
)
1637 if ((opendata
->o_res
.attrset
[1] & FATTR4_WORD1_TIME_ACCESS
) &&
1638 !(sattr
->ia_valid
& ATTR_ATIME_SET
))
1639 sattr
->ia_valid
|= ATTR_ATIME
;
1641 if ((opendata
->o_res
.attrset
[1] & FATTR4_WORD1_TIME_MODIFY
) &&
1642 !(sattr
->ia_valid
& ATTR_MTIME_SET
))
1643 sattr
->ia_valid
|= ATTR_MTIME
;
1647 * Returns a referenced nfs4_state
1649 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
)
1651 struct nfs4_state_owner
*sp
;
1652 struct nfs4_state
*state
= NULL
;
1653 struct nfs_server
*server
= NFS_SERVER(dir
);
1654 struct nfs4_opendata
*opendata
;
1657 /* Protect against reboot recovery conflicts */
1659 if (!(sp
= nfs4_get_state_owner(server
, cred
))) {
1660 dprintk("nfs4_do_open: nfs4_get_state_owner failed!\n");
1663 status
= nfs4_recover_expired_lease(server
);
1665 goto err_put_state_owner
;
1666 if (path
->dentry
->d_inode
!= NULL
)
1667 nfs4_return_incompatible_delegation(path
->dentry
->d_inode
, fmode
);
1669 opendata
= nfs4_opendata_alloc(path
, sp
, fmode
, flags
, sattr
, GFP_KERNEL
);
1670 if (opendata
== NULL
)
1671 goto err_put_state_owner
;
1673 if (path
->dentry
->d_inode
!= NULL
)
1674 opendata
->state
= nfs4_get_open_state(path
->dentry
->d_inode
, sp
);
1676 status
= _nfs4_proc_open(opendata
);
1678 goto err_opendata_put
;
1680 state
= nfs4_opendata_to_nfs4_state(opendata
);
1681 status
= PTR_ERR(state
);
1683 goto err_opendata_put
;
1684 if (server
->caps
& NFS_CAP_POSIX_LOCK
)
1685 set_bit(NFS_STATE_POSIX_LOCKS
, &state
->flags
);
1687 if (opendata
->o_arg
.open_flags
& O_EXCL
) {
1688 nfs4_exclusive_attrset(opendata
, sattr
);
1690 nfs_fattr_init(opendata
->o_res
.f_attr
);
1691 status
= nfs4_do_setattr(state
->inode
, cred
,
1692 opendata
->o_res
.f_attr
, sattr
,
1695 nfs_setattr_update_inode(state
->inode
, sattr
);
1696 nfs_post_op_update_inode(state
->inode
, opendata
->o_res
.f_attr
);
1698 nfs4_opendata_put(opendata
);
1699 nfs4_put_state_owner(sp
);
1703 nfs4_opendata_put(opendata
);
1704 err_put_state_owner
:
1705 nfs4_put_state_owner(sp
);
1712 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
)
1714 struct nfs4_exception exception
= { };
1715 struct nfs4_state
*res
;
1719 status
= _nfs4_do_open(dir
, path
, fmode
, flags
, sattr
, cred
, &res
);
1722 /* NOTE: BAD_SEQID means the server and client disagree about the
1723 * book-keeping w.r.t. state-changing operations
1724 * (OPEN/CLOSE/LOCK/LOCKU...)
1725 * It is actually a sign of a bug on the client or on the server.
1727 * If we receive a BAD_SEQID error in the particular case of
1728 * doing an OPEN, we assume that nfs_increment_open_seqid() will
1729 * have unhashed the old state_owner for us, and that we can
1730 * therefore safely retry using a new one. We should still warn
1731 * the user though...
1733 if (status
== -NFS4ERR_BAD_SEQID
) {
1734 printk(KERN_WARNING
"NFS: v4 server %s "
1735 " returned a bad sequence-id error!\n",
1736 NFS_SERVER(dir
)->nfs_client
->cl_hostname
);
1737 exception
.retry
= 1;
1741 * BAD_STATEID on OPEN means that the server cancelled our
1742 * state before it received the OPEN_CONFIRM.
1743 * Recover by retrying the request as per the discussion
1744 * on Page 181 of RFC3530.
1746 if (status
== -NFS4ERR_BAD_STATEID
) {
1747 exception
.retry
= 1;
1750 if (status
== -EAGAIN
) {
1751 /* We must have found a delegation */
1752 exception
.retry
= 1;
1755 res
= ERR_PTR(nfs4_handle_exception(NFS_SERVER(dir
),
1756 status
, &exception
));
1757 } while (exception
.retry
);
1761 static int _nfs4_do_setattr(struct inode
*inode
, struct rpc_cred
*cred
,
1762 struct nfs_fattr
*fattr
, struct iattr
*sattr
,
1763 struct nfs4_state
*state
)
1765 struct nfs_server
*server
= NFS_SERVER(inode
);
1766 struct nfs_setattrargs arg
= {
1767 .fh
= NFS_FH(inode
),
1770 .bitmask
= server
->attr_bitmask
,
1772 struct nfs_setattrres res
= {
1776 struct rpc_message msg
= {
1777 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETATTR
],
1782 unsigned long timestamp
= jiffies
;
1785 nfs_fattr_init(fattr
);
1787 if (nfs4_copy_delegation_stateid(&arg
.stateid
, inode
)) {
1788 /* Use that stateid */
1789 } else if (state
!= NULL
) {
1790 nfs4_copy_stateid(&arg
.stateid
, state
, current
->files
, current
->tgid
);
1792 memcpy(&arg
.stateid
, &zero_stateid
, sizeof(arg
.stateid
));
1794 status
= nfs4_call_sync(server
, &msg
, &arg
, &res
, 1);
1795 if (status
== 0 && state
!= NULL
)
1796 renew_lease(server
, timestamp
);
1800 static int nfs4_do_setattr(struct inode
*inode
, struct rpc_cred
*cred
,
1801 struct nfs_fattr
*fattr
, struct iattr
*sattr
,
1802 struct nfs4_state
*state
)
1804 struct nfs_server
*server
= NFS_SERVER(inode
);
1805 struct nfs4_exception exception
= { };
1808 err
= nfs4_handle_exception(server
,
1809 _nfs4_do_setattr(inode
, cred
, fattr
, sattr
, state
),
1811 } while (exception
.retry
);
1815 struct nfs4_closedata
{
1817 struct inode
*inode
;
1818 struct nfs4_state
*state
;
1819 struct nfs_closeargs arg
;
1820 struct nfs_closeres res
;
1821 struct nfs_fattr fattr
;
1822 unsigned long timestamp
;
1825 static void nfs4_free_closedata(void *data
)
1827 struct nfs4_closedata
*calldata
= data
;
1828 struct nfs4_state_owner
*sp
= calldata
->state
->owner
;
1830 nfs4_put_open_state(calldata
->state
);
1831 nfs_free_seqid(calldata
->arg
.seqid
);
1832 nfs4_put_state_owner(sp
);
1833 path_put(&calldata
->path
);
1837 static void nfs4_close_clear_stateid_flags(struct nfs4_state
*state
,
1840 spin_lock(&state
->owner
->so_lock
);
1841 if (!(fmode
& FMODE_READ
))
1842 clear_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
1843 if (!(fmode
& FMODE_WRITE
))
1844 clear_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
1845 clear_bit(NFS_O_RDWR_STATE
, &state
->flags
);
1846 spin_unlock(&state
->owner
->so_lock
);
1849 static void nfs4_close_done(struct rpc_task
*task
, void *data
)
1851 struct nfs4_closedata
*calldata
= data
;
1852 struct nfs4_state
*state
= calldata
->state
;
1853 struct nfs_server
*server
= NFS_SERVER(calldata
->inode
);
1855 if (!nfs4_sequence_done(task
, &calldata
->res
.seq_res
))
1857 /* hmm. we are done with the inode, and in the process of freeing
1858 * the state_owner. we keep this around to process errors
1860 switch (task
->tk_status
) {
1862 nfs_set_open_stateid(state
, &calldata
->res
.stateid
, 0);
1863 renew_lease(server
, calldata
->timestamp
);
1864 nfs4_close_clear_stateid_flags(state
,
1865 calldata
->arg
.fmode
);
1867 case -NFS4ERR_STALE_STATEID
:
1868 case -NFS4ERR_OLD_STATEID
:
1869 case -NFS4ERR_BAD_STATEID
:
1870 case -NFS4ERR_EXPIRED
:
1871 if (calldata
->arg
.fmode
== 0)
1874 if (nfs4_async_handle_error(task
, server
, state
) == -EAGAIN
)
1875 rpc_restart_call_prepare(task
);
1877 nfs_release_seqid(calldata
->arg
.seqid
);
1878 nfs_refresh_inode(calldata
->inode
, calldata
->res
.fattr
);
1881 static void nfs4_close_prepare(struct rpc_task
*task
, void *data
)
1883 struct nfs4_closedata
*calldata
= data
;
1884 struct nfs4_state
*state
= calldata
->state
;
1887 if (nfs_wait_on_sequence(calldata
->arg
.seqid
, task
) != 0)
1890 task
->tk_msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_OPEN_DOWNGRADE
];
1891 calldata
->arg
.fmode
= FMODE_READ
|FMODE_WRITE
;
1892 spin_lock(&state
->owner
->so_lock
);
1893 /* Calculate the change in open mode */
1894 if (state
->n_rdwr
== 0) {
1895 if (state
->n_rdonly
== 0) {
1896 call_close
|= test_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
1897 call_close
|= test_bit(NFS_O_RDWR_STATE
, &state
->flags
);
1898 calldata
->arg
.fmode
&= ~FMODE_READ
;
1900 if (state
->n_wronly
== 0) {
1901 call_close
|= test_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
1902 call_close
|= test_bit(NFS_O_RDWR_STATE
, &state
->flags
);
1903 calldata
->arg
.fmode
&= ~FMODE_WRITE
;
1906 spin_unlock(&state
->owner
->so_lock
);
1909 /* Note: exit _without_ calling nfs4_close_done */
1910 task
->tk_action
= NULL
;
1914 if (calldata
->arg
.fmode
== 0)
1915 task
->tk_msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_CLOSE
];
1917 nfs_fattr_init(calldata
->res
.fattr
);
1918 calldata
->timestamp
= jiffies
;
1919 if (nfs4_setup_sequence(NFS_SERVER(calldata
->inode
),
1920 &calldata
->arg
.seq_args
, &calldata
->res
.seq_res
,
1923 rpc_call_start(task
);
1926 static const struct rpc_call_ops nfs4_close_ops
= {
1927 .rpc_call_prepare
= nfs4_close_prepare
,
1928 .rpc_call_done
= nfs4_close_done
,
1929 .rpc_release
= nfs4_free_closedata
,
1933 * It is possible for data to be read/written from a mem-mapped file
1934 * after the sys_close call (which hits the vfs layer as a flush).
1935 * This means that we can't safely call nfsv4 close on a file until
1936 * the inode is cleared. This in turn means that we are not good
1937 * NFSv4 citizens - we do not indicate to the server to update the file's
1938 * share state even when we are done with one of the three share
1939 * stateid's in the inode.
1941 * NOTE: Caller must be holding the sp->so_owner semaphore!
1943 int nfs4_do_close(struct path
*path
, struct nfs4_state
*state
, gfp_t gfp_mask
, int wait
)
1945 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
1946 struct nfs4_closedata
*calldata
;
1947 struct nfs4_state_owner
*sp
= state
->owner
;
1948 struct rpc_task
*task
;
1949 struct rpc_message msg
= {
1950 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_CLOSE
],
1951 .rpc_cred
= state
->owner
->so_cred
,
1953 struct rpc_task_setup task_setup_data
= {
1954 .rpc_client
= server
->client
,
1955 .rpc_message
= &msg
,
1956 .callback_ops
= &nfs4_close_ops
,
1957 .workqueue
= nfsiod_workqueue
,
1958 .flags
= RPC_TASK_ASYNC
,
1960 int status
= -ENOMEM
;
1962 calldata
= kzalloc(sizeof(*calldata
), gfp_mask
);
1963 if (calldata
== NULL
)
1965 calldata
->inode
= state
->inode
;
1966 calldata
->state
= state
;
1967 calldata
->arg
.fh
= NFS_FH(state
->inode
);
1968 calldata
->arg
.stateid
= &state
->open_stateid
;
1969 /* Serialization for the sequence id */
1970 calldata
->arg
.seqid
= nfs_alloc_seqid(&state
->owner
->so_seqid
, gfp_mask
);
1971 if (calldata
->arg
.seqid
== NULL
)
1972 goto out_free_calldata
;
1973 calldata
->arg
.fmode
= 0;
1974 calldata
->arg
.bitmask
= server
->cache_consistency_bitmask
;
1975 calldata
->res
.fattr
= &calldata
->fattr
;
1976 calldata
->res
.seqid
= calldata
->arg
.seqid
;
1977 calldata
->res
.server
= server
;
1978 calldata
->res
.seq_res
.sr_slotid
= NFS4_MAX_SLOT_TABLE
;
1980 calldata
->path
= *path
;
1982 msg
.rpc_argp
= &calldata
->arg
,
1983 msg
.rpc_resp
= &calldata
->res
,
1984 task_setup_data
.callback_data
= calldata
;
1985 task
= rpc_run_task(&task_setup_data
);
1987 return PTR_ERR(task
);
1990 status
= rpc_wait_for_completion_task(task
);
1996 nfs4_put_open_state(state
);
1997 nfs4_put_state_owner(sp
);
2001 static int nfs4_intent_set_file(struct nameidata
*nd
, struct path
*path
, struct nfs4_state
*state
, fmode_t fmode
)
2006 /* If the open_intent is for execute, we have an extra check to make */
2007 if (fmode
& FMODE_EXEC
) {
2008 ret
= nfs_may_open(state
->inode
,
2009 state
->owner
->so_cred
,
2010 nd
->intent
.open
.flags
);
2014 filp
= lookup_instantiate_filp(nd
, path
->dentry
, NULL
);
2015 if (!IS_ERR(filp
)) {
2016 struct nfs_open_context
*ctx
;
2017 ctx
= nfs_file_open_context(filp
);
2021 ret
= PTR_ERR(filp
);
2023 nfs4_close_sync(path
, state
, fmode
& (FMODE_READ
|FMODE_WRITE
));
2028 nfs4_atomic_open(struct inode
*dir
, struct nfs_open_context
*ctx
, int open_flags
, struct iattr
*attr
)
2030 struct nfs4_state
*state
;
2032 /* Protect against concurrent sillydeletes */
2033 state
= nfs4_do_open(dir
, &ctx
->path
, ctx
->mode
, open_flags
, attr
, ctx
->cred
);
2035 return ERR_CAST(state
);
2037 return igrab(state
->inode
);
2040 static void nfs4_close_context(struct nfs_open_context
*ctx
, int is_sync
)
2042 if (ctx
->state
== NULL
)
2045 nfs4_close_sync(&ctx
->path
, ctx
->state
, ctx
->mode
);
2047 nfs4_close_state(&ctx
->path
, ctx
->state
, ctx
->mode
);
2050 static int _nfs4_server_capabilities(struct nfs_server
*server
, struct nfs_fh
*fhandle
)
2052 struct nfs4_server_caps_arg args
= {
2055 struct nfs4_server_caps_res res
= {};
2056 struct rpc_message msg
= {
2057 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SERVER_CAPS
],
2063 status
= nfs4_call_sync(server
, &msg
, &args
, &res
, 0);
2065 memcpy(server
->attr_bitmask
, res
.attr_bitmask
, sizeof(server
->attr_bitmask
));
2066 server
->caps
&= ~(NFS_CAP_ACLS
|NFS_CAP_HARDLINKS
|
2067 NFS_CAP_SYMLINKS
|NFS_CAP_FILEID
|
2068 NFS_CAP_MODE
|NFS_CAP_NLINK
|NFS_CAP_OWNER
|
2069 NFS_CAP_OWNER_GROUP
|NFS_CAP_ATIME
|
2070 NFS_CAP_CTIME
|NFS_CAP_MTIME
);
2071 if (res
.attr_bitmask
[0] & FATTR4_WORD0_ACL
)
2072 server
->caps
|= NFS_CAP_ACLS
;
2073 if (res
.has_links
!= 0)
2074 server
->caps
|= NFS_CAP_HARDLINKS
;
2075 if (res
.has_symlinks
!= 0)
2076 server
->caps
|= NFS_CAP_SYMLINKS
;
2077 if (res
.attr_bitmask
[0] & FATTR4_WORD0_FILEID
)
2078 server
->caps
|= NFS_CAP_FILEID
;
2079 if (res
.attr_bitmask
[1] & FATTR4_WORD1_MODE
)
2080 server
->caps
|= NFS_CAP_MODE
;
2081 if (res
.attr_bitmask
[1] & FATTR4_WORD1_NUMLINKS
)
2082 server
->caps
|= NFS_CAP_NLINK
;
2083 if (res
.attr_bitmask
[1] & FATTR4_WORD1_OWNER
)
2084 server
->caps
|= NFS_CAP_OWNER
;
2085 if (res
.attr_bitmask
[1] & FATTR4_WORD1_OWNER_GROUP
)
2086 server
->caps
|= NFS_CAP_OWNER_GROUP
;
2087 if (res
.attr_bitmask
[1] & FATTR4_WORD1_TIME_ACCESS
)
2088 server
->caps
|= NFS_CAP_ATIME
;
2089 if (res
.attr_bitmask
[1] & FATTR4_WORD1_TIME_METADATA
)
2090 server
->caps
|= NFS_CAP_CTIME
;
2091 if (res
.attr_bitmask
[1] & FATTR4_WORD1_TIME_MODIFY
)
2092 server
->caps
|= NFS_CAP_MTIME
;
2094 memcpy(server
->cache_consistency_bitmask
, res
.attr_bitmask
, sizeof(server
->cache_consistency_bitmask
));
2095 server
->cache_consistency_bitmask
[0] &= FATTR4_WORD0_CHANGE
|FATTR4_WORD0_SIZE
;
2096 server
->cache_consistency_bitmask
[1] &= FATTR4_WORD1_TIME_METADATA
|FATTR4_WORD1_TIME_MODIFY
;
2097 server
->acl_bitmask
= res
.acl_bitmask
;
2103 int nfs4_server_capabilities(struct nfs_server
*server
, struct nfs_fh
*fhandle
)
2105 struct nfs4_exception exception
= { };
2108 err
= nfs4_handle_exception(server
,
2109 _nfs4_server_capabilities(server
, fhandle
),
2111 } while (exception
.retry
);
2115 static int _nfs4_lookup_root(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
2116 struct nfs_fsinfo
*info
)
2118 struct nfs4_lookup_root_arg args
= {
2119 .bitmask
= nfs4_fattr_bitmap
,
2121 struct nfs4_lookup_res res
= {
2123 .fattr
= info
->fattr
,
2126 struct rpc_message msg
= {
2127 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOOKUP_ROOT
],
2132 nfs_fattr_init(info
->fattr
);
2133 return nfs4_call_sync(server
, &msg
, &args
, &res
, 0);
2136 static int nfs4_lookup_root(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
2137 struct nfs_fsinfo
*info
)
2139 struct nfs4_exception exception
= { };
2142 err
= nfs4_handle_exception(server
,
2143 _nfs4_lookup_root(server
, fhandle
, info
),
2145 } while (exception
.retry
);
2150 * get the file handle for the "/" directory on the server
2152 static int nfs4_proc_get_root(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
2153 struct nfs_fsinfo
*info
)
2157 status
= nfs4_lookup_root(server
, fhandle
, info
);
2159 status
= nfs4_server_capabilities(server
, fhandle
);
2161 status
= nfs4_do_fsinfo(server
, fhandle
, info
);
2162 return nfs4_map_errors(status
);
2166 * Get locations and (maybe) other attributes of a referral.
2167 * Note that we'll actually follow the referral later when
2168 * we detect fsid mismatch in inode revalidation
2170 static int nfs4_get_referral(struct inode
*dir
, const struct qstr
*name
, struct nfs_fattr
*fattr
, struct nfs_fh
*fhandle
)
2172 int status
= -ENOMEM
;
2173 struct page
*page
= NULL
;
2174 struct nfs4_fs_locations
*locations
= NULL
;
2176 page
= alloc_page(GFP_KERNEL
);
2179 locations
= kmalloc(sizeof(struct nfs4_fs_locations
), GFP_KERNEL
);
2180 if (locations
== NULL
)
2183 status
= nfs4_proc_fs_locations(dir
, name
, locations
, page
);
2186 /* Make sure server returned a different fsid for the referral */
2187 if (nfs_fsid_equal(&NFS_SERVER(dir
)->fsid
, &locations
->fattr
.fsid
)) {
2188 dprintk("%s: server did not return a different fsid for a referral at %s\n", __func__
, name
->name
);
2193 memcpy(fattr
, &locations
->fattr
, sizeof(struct nfs_fattr
));
2194 fattr
->valid
|= NFS_ATTR_FATTR_V4_REFERRAL
;
2196 fattr
->mode
= S_IFDIR
;
2197 memset(fhandle
, 0, sizeof(struct nfs_fh
));
2205 static int _nfs4_proc_getattr(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fattr
*fattr
)
2207 struct nfs4_getattr_arg args
= {
2209 .bitmask
= server
->attr_bitmask
,
2211 struct nfs4_getattr_res res
= {
2215 struct rpc_message msg
= {
2216 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GETATTR
],
2221 nfs_fattr_init(fattr
);
2222 return nfs4_call_sync(server
, &msg
, &args
, &res
, 0);
2225 static int nfs4_proc_getattr(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fattr
*fattr
)
2227 struct nfs4_exception exception
= { };
2230 err
= nfs4_handle_exception(server
,
2231 _nfs4_proc_getattr(server
, fhandle
, fattr
),
2233 } while (exception
.retry
);
2238 * The file is not closed if it is opened due to the a request to change
2239 * the size of the file. The open call will not be needed once the
2240 * VFS layer lookup-intents are implemented.
2242 * Close is called when the inode is destroyed.
2243 * If we haven't opened the file for O_WRONLY, we
2244 * need to in the size_change case to obtain a stateid.
2247 * Because OPEN is always done by name in nfsv4, it is
2248 * possible that we opened a different file by the same
2249 * name. We can recognize this race condition, but we
2250 * can't do anything about it besides returning an error.
2252 * This will be fixed with VFS changes (lookup-intent).
2255 nfs4_proc_setattr(struct dentry
*dentry
, struct nfs_fattr
*fattr
,
2256 struct iattr
*sattr
)
2258 struct inode
*inode
= dentry
->d_inode
;
2259 struct rpc_cred
*cred
= NULL
;
2260 struct nfs4_state
*state
= NULL
;
2263 nfs_fattr_init(fattr
);
2265 /* Search for an existing open(O_WRITE) file */
2266 if (sattr
->ia_valid
& ATTR_FILE
) {
2267 struct nfs_open_context
*ctx
;
2269 ctx
= nfs_file_open_context(sattr
->ia_file
);
2276 status
= nfs4_do_setattr(inode
, cred
, fattr
, sattr
, state
);
2278 nfs_setattr_update_inode(inode
, sattr
);
2282 static int _nfs4_proc_lookupfh(struct nfs_server
*server
, const struct nfs_fh
*dirfh
,
2283 const struct qstr
*name
, struct nfs_fh
*fhandle
,
2284 struct nfs_fattr
*fattr
)
2287 struct nfs4_lookup_arg args
= {
2288 .bitmask
= server
->attr_bitmask
,
2292 struct nfs4_lookup_res res
= {
2297 struct rpc_message msg
= {
2298 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOOKUP
],
2303 nfs_fattr_init(fattr
);
2305 dprintk("NFS call lookupfh %s\n", name
->name
);
2306 status
= nfs4_call_sync(server
, &msg
, &args
, &res
, 0);
2307 dprintk("NFS reply lookupfh: %d\n", status
);
2311 static int nfs4_proc_lookupfh(struct nfs_server
*server
, struct nfs_fh
*dirfh
,
2312 struct qstr
*name
, struct nfs_fh
*fhandle
,
2313 struct nfs_fattr
*fattr
)
2315 struct nfs4_exception exception
= { };
2318 err
= _nfs4_proc_lookupfh(server
, dirfh
, name
, fhandle
, fattr
);
2320 if (err
== -NFS4ERR_MOVED
) {
2324 err
= nfs4_handle_exception(server
, err
, &exception
);
2325 } while (exception
.retry
);
2329 static int _nfs4_proc_lookup(struct inode
*dir
, const struct qstr
*name
,
2330 struct nfs_fh
*fhandle
, struct nfs_fattr
*fattr
)
2334 dprintk("NFS call lookup %s\n", name
->name
);
2335 status
= _nfs4_proc_lookupfh(NFS_SERVER(dir
), NFS_FH(dir
), name
, fhandle
, fattr
);
2336 if (status
== -NFS4ERR_MOVED
)
2337 status
= nfs4_get_referral(dir
, name
, fattr
, fhandle
);
2338 dprintk("NFS reply lookup: %d\n", status
);
2342 static int nfs4_proc_lookup(struct inode
*dir
, struct qstr
*name
, struct nfs_fh
*fhandle
, struct nfs_fattr
*fattr
)
2344 struct nfs4_exception exception
= { };
2347 err
= nfs4_handle_exception(NFS_SERVER(dir
),
2348 _nfs4_proc_lookup(dir
, name
, fhandle
, fattr
),
2350 } while (exception
.retry
);
2354 static int _nfs4_proc_access(struct inode
*inode
, struct nfs_access_entry
*entry
)
2356 struct nfs_server
*server
= NFS_SERVER(inode
);
2357 struct nfs4_accessargs args
= {
2358 .fh
= NFS_FH(inode
),
2359 .bitmask
= server
->attr_bitmask
,
2361 struct nfs4_accessres res
= {
2364 struct rpc_message msg
= {
2365 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_ACCESS
],
2368 .rpc_cred
= entry
->cred
,
2370 int mode
= entry
->mask
;
2374 * Determine which access bits we want to ask for...
2376 if (mode
& MAY_READ
)
2377 args
.access
|= NFS4_ACCESS_READ
;
2378 if (S_ISDIR(inode
->i_mode
)) {
2379 if (mode
& MAY_WRITE
)
2380 args
.access
|= NFS4_ACCESS_MODIFY
| NFS4_ACCESS_EXTEND
| NFS4_ACCESS_DELETE
;
2381 if (mode
& MAY_EXEC
)
2382 args
.access
|= NFS4_ACCESS_LOOKUP
;
2384 if (mode
& MAY_WRITE
)
2385 args
.access
|= NFS4_ACCESS_MODIFY
| NFS4_ACCESS_EXTEND
;
2386 if (mode
& MAY_EXEC
)
2387 args
.access
|= NFS4_ACCESS_EXECUTE
;
2390 res
.fattr
= nfs_alloc_fattr();
2391 if (res
.fattr
== NULL
)
2394 status
= nfs4_call_sync(server
, &msg
, &args
, &res
, 0);
2397 if (res
.access
& NFS4_ACCESS_READ
)
2398 entry
->mask
|= MAY_READ
;
2399 if (res
.access
& (NFS4_ACCESS_MODIFY
| NFS4_ACCESS_EXTEND
| NFS4_ACCESS_DELETE
))
2400 entry
->mask
|= MAY_WRITE
;
2401 if (res
.access
& (NFS4_ACCESS_LOOKUP
|NFS4_ACCESS_EXECUTE
))
2402 entry
->mask
|= MAY_EXEC
;
2403 nfs_refresh_inode(inode
, res
.fattr
);
2405 nfs_free_fattr(res
.fattr
);
2409 static int nfs4_proc_access(struct inode
*inode
, struct nfs_access_entry
*entry
)
2411 struct nfs4_exception exception
= { };
2414 err
= nfs4_handle_exception(NFS_SERVER(inode
),
2415 _nfs4_proc_access(inode
, entry
),
2417 } while (exception
.retry
);
2422 * TODO: For the time being, we don't try to get any attributes
2423 * along with any of the zero-copy operations READ, READDIR,
2426 * In the case of the first three, we want to put the GETATTR
2427 * after the read-type operation -- this is because it is hard
2428 * to predict the length of a GETATTR response in v4, and thus
2429 * align the READ data correctly. This means that the GETATTR
2430 * may end up partially falling into the page cache, and we should
2431 * shift it into the 'tail' of the xdr_buf before processing.
2432 * To do this efficiently, we need to know the total length
2433 * of data received, which doesn't seem to be available outside
2436 * In the case of WRITE, we also want to put the GETATTR after
2437 * the operation -- in this case because we want to make sure
2438 * we get the post-operation mtime and size. This means that
2439 * we can't use xdr_encode_pages() as written: we need a variant
2440 * of it which would leave room in the 'tail' iovec.
2442 * Both of these changes to the XDR layer would in fact be quite
2443 * minor, but I decided to leave them for a subsequent patch.
2445 static int _nfs4_proc_readlink(struct inode
*inode
, struct page
*page
,
2446 unsigned int pgbase
, unsigned int pglen
)
2448 struct nfs4_readlink args
= {
2449 .fh
= NFS_FH(inode
),
2454 struct nfs4_readlink_res res
;
2455 struct rpc_message msg
= {
2456 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_READLINK
],
2461 return nfs4_call_sync(NFS_SERVER(inode
), &msg
, &args
, &res
, 0);
2464 static int nfs4_proc_readlink(struct inode
*inode
, struct page
*page
,
2465 unsigned int pgbase
, unsigned int pglen
)
2467 struct nfs4_exception exception
= { };
2470 err
= nfs4_handle_exception(NFS_SERVER(inode
),
2471 _nfs4_proc_readlink(inode
, page
, pgbase
, pglen
),
2473 } while (exception
.retry
);
2479 * We will need to arrange for the VFS layer to provide an atomic open.
2480 * Until then, this create/open method is prone to inefficiency and race
2481 * conditions due to the lookup, create, and open VFS calls from sys_open()
2482 * placed on the wire.
2484 * Given the above sorry state of affairs, I'm simply sending an OPEN.
2485 * The file will be opened again in the subsequent VFS open call
2486 * (nfs4_proc_file_open).
2488 * The open for read will just hang around to be used by any process that
2489 * opens the file O_RDONLY. This will all be resolved with the VFS changes.
2493 nfs4_proc_create(struct inode
*dir
, struct dentry
*dentry
, struct iattr
*sattr
,
2494 int flags
, struct nameidata
*nd
)
2496 struct path path
= {
2497 .mnt
= nd
->path
.mnt
,
2500 struct nfs4_state
*state
;
2501 struct rpc_cred
*cred
;
2502 fmode_t fmode
= flags
& (FMODE_READ
| FMODE_WRITE
);
2505 cred
= rpc_lookup_cred();
2507 status
= PTR_ERR(cred
);
2510 state
= nfs4_do_open(dir
, &path
, fmode
, flags
, sattr
, cred
);
2512 if (IS_ERR(state
)) {
2513 status
= PTR_ERR(state
);
2516 d_add(dentry
, igrab(state
->inode
));
2517 nfs_set_verifier(dentry
, nfs_save_change_attribute(dir
));
2518 if (status
== 0 && (nd
->flags
& LOOKUP_OPEN
) != 0)
2519 status
= nfs4_intent_set_file(nd
, &path
, state
, fmode
);
2521 nfs4_close_sync(&path
, state
, fmode
);
2528 static int _nfs4_proc_remove(struct inode
*dir
, struct qstr
*name
)
2530 struct nfs_server
*server
= NFS_SERVER(dir
);
2531 struct nfs_removeargs args
= {
2533 .name
.len
= name
->len
,
2534 .name
.name
= name
->name
,
2535 .bitmask
= server
->attr_bitmask
,
2537 struct nfs_removeres res
= {
2540 struct rpc_message msg
= {
2541 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_REMOVE
],
2545 int status
= -ENOMEM
;
2547 res
.dir_attr
= nfs_alloc_fattr();
2548 if (res
.dir_attr
== NULL
)
2551 status
= nfs4_call_sync(server
, &msg
, &args
, &res
, 1);
2553 update_changeattr(dir
, &res
.cinfo
);
2554 nfs_post_op_update_inode(dir
, res
.dir_attr
);
2556 nfs_free_fattr(res
.dir_attr
);
2561 static int nfs4_proc_remove(struct inode
*dir
, struct qstr
*name
)
2563 struct nfs4_exception exception
= { };
2566 err
= nfs4_handle_exception(NFS_SERVER(dir
),
2567 _nfs4_proc_remove(dir
, name
),
2569 } while (exception
.retry
);
2573 static void nfs4_proc_unlink_setup(struct rpc_message
*msg
, struct inode
*dir
)
2575 struct nfs_server
*server
= NFS_SERVER(dir
);
2576 struct nfs_removeargs
*args
= msg
->rpc_argp
;
2577 struct nfs_removeres
*res
= msg
->rpc_resp
;
2579 args
->bitmask
= server
->cache_consistency_bitmask
;
2580 res
->server
= server
;
2581 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_REMOVE
];
2584 static int nfs4_proc_unlink_done(struct rpc_task
*task
, struct inode
*dir
)
2586 struct nfs_removeres
*res
= task
->tk_msg
.rpc_resp
;
2588 if (!nfs4_sequence_done(task
, &res
->seq_res
))
2590 if (nfs4_async_handle_error(task
, res
->server
, NULL
) == -EAGAIN
)
2592 update_changeattr(dir
, &res
->cinfo
);
2593 nfs_post_op_update_inode(dir
, res
->dir_attr
);
2597 static int _nfs4_proc_rename(struct inode
*old_dir
, struct qstr
*old_name
,
2598 struct inode
*new_dir
, struct qstr
*new_name
)
2600 struct nfs_server
*server
= NFS_SERVER(old_dir
);
2601 struct nfs4_rename_arg arg
= {
2602 .old_dir
= NFS_FH(old_dir
),
2603 .new_dir
= NFS_FH(new_dir
),
2604 .old_name
= old_name
,
2605 .new_name
= new_name
,
2606 .bitmask
= server
->attr_bitmask
,
2608 struct nfs4_rename_res res
= {
2611 struct rpc_message msg
= {
2612 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RENAME
],
2616 int status
= -ENOMEM
;
2618 res
.old_fattr
= nfs_alloc_fattr();
2619 res
.new_fattr
= nfs_alloc_fattr();
2620 if (res
.old_fattr
== NULL
|| res
.new_fattr
== NULL
)
2623 status
= nfs4_call_sync(server
, &msg
, &arg
, &res
, 1);
2625 update_changeattr(old_dir
, &res
.old_cinfo
);
2626 nfs_post_op_update_inode(old_dir
, res
.old_fattr
);
2627 update_changeattr(new_dir
, &res
.new_cinfo
);
2628 nfs_post_op_update_inode(new_dir
, res
.new_fattr
);
2631 nfs_free_fattr(res
.new_fattr
);
2632 nfs_free_fattr(res
.old_fattr
);
2636 static int nfs4_proc_rename(struct inode
*old_dir
, struct qstr
*old_name
,
2637 struct inode
*new_dir
, struct qstr
*new_name
)
2639 struct nfs4_exception exception
= { };
2642 err
= nfs4_handle_exception(NFS_SERVER(old_dir
),
2643 _nfs4_proc_rename(old_dir
, old_name
,
2646 } while (exception
.retry
);
2650 static int _nfs4_proc_link(struct inode
*inode
, struct inode
*dir
, struct qstr
*name
)
2652 struct nfs_server
*server
= NFS_SERVER(inode
);
2653 struct nfs4_link_arg arg
= {
2654 .fh
= NFS_FH(inode
),
2655 .dir_fh
= NFS_FH(dir
),
2657 .bitmask
= server
->attr_bitmask
,
2659 struct nfs4_link_res res
= {
2662 struct rpc_message msg
= {
2663 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LINK
],
2667 int status
= -ENOMEM
;
2669 res
.fattr
= nfs_alloc_fattr();
2670 res
.dir_attr
= nfs_alloc_fattr();
2671 if (res
.fattr
== NULL
|| res
.dir_attr
== NULL
)
2674 status
= nfs4_call_sync(server
, &msg
, &arg
, &res
, 1);
2676 update_changeattr(dir
, &res
.cinfo
);
2677 nfs_post_op_update_inode(dir
, res
.dir_attr
);
2678 nfs_post_op_update_inode(inode
, res
.fattr
);
2681 nfs_free_fattr(res
.dir_attr
);
2682 nfs_free_fattr(res
.fattr
);
2686 static int nfs4_proc_link(struct inode
*inode
, struct inode
*dir
, struct qstr
*name
)
2688 struct nfs4_exception exception
= { };
2691 err
= nfs4_handle_exception(NFS_SERVER(inode
),
2692 _nfs4_proc_link(inode
, dir
, name
),
2694 } while (exception
.retry
);
2698 struct nfs4_createdata
{
2699 struct rpc_message msg
;
2700 struct nfs4_create_arg arg
;
2701 struct nfs4_create_res res
;
2703 struct nfs_fattr fattr
;
2704 struct nfs_fattr dir_fattr
;
2707 static struct nfs4_createdata
*nfs4_alloc_createdata(struct inode
*dir
,
2708 struct qstr
*name
, struct iattr
*sattr
, u32 ftype
)
2710 struct nfs4_createdata
*data
;
2712 data
= kzalloc(sizeof(*data
), GFP_KERNEL
);
2714 struct nfs_server
*server
= NFS_SERVER(dir
);
2716 data
->msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_CREATE
];
2717 data
->msg
.rpc_argp
= &data
->arg
;
2718 data
->msg
.rpc_resp
= &data
->res
;
2719 data
->arg
.dir_fh
= NFS_FH(dir
);
2720 data
->arg
.server
= server
;
2721 data
->arg
.name
= name
;
2722 data
->arg
.attrs
= sattr
;
2723 data
->arg
.ftype
= ftype
;
2724 data
->arg
.bitmask
= server
->attr_bitmask
;
2725 data
->res
.server
= server
;
2726 data
->res
.fh
= &data
->fh
;
2727 data
->res
.fattr
= &data
->fattr
;
2728 data
->res
.dir_fattr
= &data
->dir_fattr
;
2729 nfs_fattr_init(data
->res
.fattr
);
2730 nfs_fattr_init(data
->res
.dir_fattr
);
2735 static int nfs4_do_create(struct inode
*dir
, struct dentry
*dentry
, struct nfs4_createdata
*data
)
2737 int status
= nfs4_call_sync(NFS_SERVER(dir
), &data
->msg
,
2738 &data
->arg
, &data
->res
, 1);
2740 update_changeattr(dir
, &data
->res
.dir_cinfo
);
2741 nfs_post_op_update_inode(dir
, data
->res
.dir_fattr
);
2742 status
= nfs_instantiate(dentry
, data
->res
.fh
, data
->res
.fattr
);
2747 static void nfs4_free_createdata(struct nfs4_createdata
*data
)
2752 static int _nfs4_proc_symlink(struct inode
*dir
, struct dentry
*dentry
,
2753 struct page
*page
, unsigned int len
, struct iattr
*sattr
)
2755 struct nfs4_createdata
*data
;
2756 int status
= -ENAMETOOLONG
;
2758 if (len
> NFS4_MAXPATHLEN
)
2762 data
= nfs4_alloc_createdata(dir
, &dentry
->d_name
, sattr
, NF4LNK
);
2766 data
->msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SYMLINK
];
2767 data
->arg
.u
.symlink
.pages
= &page
;
2768 data
->arg
.u
.symlink
.len
= len
;
2770 status
= nfs4_do_create(dir
, dentry
, data
);
2772 nfs4_free_createdata(data
);
2777 static int nfs4_proc_symlink(struct inode
*dir
, struct dentry
*dentry
,
2778 struct page
*page
, unsigned int len
, struct iattr
*sattr
)
2780 struct nfs4_exception exception
= { };
2783 err
= nfs4_handle_exception(NFS_SERVER(dir
),
2784 _nfs4_proc_symlink(dir
, dentry
, page
,
2787 } while (exception
.retry
);
2791 static int _nfs4_proc_mkdir(struct inode
*dir
, struct dentry
*dentry
,
2792 struct iattr
*sattr
)
2794 struct nfs4_createdata
*data
;
2795 int status
= -ENOMEM
;
2797 data
= nfs4_alloc_createdata(dir
, &dentry
->d_name
, sattr
, NF4DIR
);
2801 status
= nfs4_do_create(dir
, dentry
, data
);
2803 nfs4_free_createdata(data
);
2808 static int nfs4_proc_mkdir(struct inode
*dir
, struct dentry
*dentry
,
2809 struct iattr
*sattr
)
2811 struct nfs4_exception exception
= { };
2814 err
= nfs4_handle_exception(NFS_SERVER(dir
),
2815 _nfs4_proc_mkdir(dir
, dentry
, sattr
),
2817 } while (exception
.retry
);
2821 static int _nfs4_proc_readdir(struct dentry
*dentry
, struct rpc_cred
*cred
,
2822 u64 cookie
, struct page
*page
, unsigned int count
, int plus
)
2824 struct inode
*dir
= dentry
->d_inode
;
2825 struct nfs4_readdir_arg args
= {
2830 .bitmask
= NFS_SERVER(dentry
->d_inode
)->attr_bitmask
,
2832 struct nfs4_readdir_res res
;
2833 struct rpc_message msg
= {
2834 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_READDIR
],
2841 dprintk("%s: dentry = %s/%s, cookie = %Lu\n", __func__
,
2842 dentry
->d_parent
->d_name
.name
,
2843 dentry
->d_name
.name
,
2844 (unsigned long long)cookie
);
2845 nfs4_setup_readdir(cookie
, NFS_COOKIEVERF(dir
), dentry
, &args
);
2846 res
.pgbase
= args
.pgbase
;
2847 status
= nfs4_call_sync(NFS_SERVER(dir
), &msg
, &args
, &res
, 0);
2849 memcpy(NFS_COOKIEVERF(dir
), res
.verifier
.data
, NFS4_VERIFIER_SIZE
);
2851 nfs_invalidate_atime(dir
);
2853 dprintk("%s: returns %d\n", __func__
, status
);
2857 static int nfs4_proc_readdir(struct dentry
*dentry
, struct rpc_cred
*cred
,
2858 u64 cookie
, struct page
*page
, unsigned int count
, int plus
)
2860 struct nfs4_exception exception
= { };
2863 err
= nfs4_handle_exception(NFS_SERVER(dentry
->d_inode
),
2864 _nfs4_proc_readdir(dentry
, cred
, cookie
,
2867 } while (exception
.retry
);
2871 static int _nfs4_proc_mknod(struct inode
*dir
, struct dentry
*dentry
,
2872 struct iattr
*sattr
, dev_t rdev
)
2874 struct nfs4_createdata
*data
;
2875 int mode
= sattr
->ia_mode
;
2876 int status
= -ENOMEM
;
2878 BUG_ON(!(sattr
->ia_valid
& ATTR_MODE
));
2879 BUG_ON(!S_ISFIFO(mode
) && !S_ISBLK(mode
) && !S_ISCHR(mode
) && !S_ISSOCK(mode
));
2881 data
= nfs4_alloc_createdata(dir
, &dentry
->d_name
, sattr
, NF4SOCK
);
2886 data
->arg
.ftype
= NF4FIFO
;
2887 else if (S_ISBLK(mode
)) {
2888 data
->arg
.ftype
= NF4BLK
;
2889 data
->arg
.u
.device
.specdata1
= MAJOR(rdev
);
2890 data
->arg
.u
.device
.specdata2
= MINOR(rdev
);
2892 else if (S_ISCHR(mode
)) {
2893 data
->arg
.ftype
= NF4CHR
;
2894 data
->arg
.u
.device
.specdata1
= MAJOR(rdev
);
2895 data
->arg
.u
.device
.specdata2
= MINOR(rdev
);
2898 status
= nfs4_do_create(dir
, dentry
, data
);
2900 nfs4_free_createdata(data
);
2905 static int nfs4_proc_mknod(struct inode
*dir
, struct dentry
*dentry
,
2906 struct iattr
*sattr
, dev_t rdev
)
2908 struct nfs4_exception exception
= { };
2911 err
= nfs4_handle_exception(NFS_SERVER(dir
),
2912 _nfs4_proc_mknod(dir
, dentry
, sattr
, rdev
),
2914 } while (exception
.retry
);
2918 static int _nfs4_proc_statfs(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
2919 struct nfs_fsstat
*fsstat
)
2921 struct nfs4_statfs_arg args
= {
2923 .bitmask
= server
->attr_bitmask
,
2925 struct nfs4_statfs_res res
= {
2928 struct rpc_message msg
= {
2929 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_STATFS
],
2934 nfs_fattr_init(fsstat
->fattr
);
2935 return nfs4_call_sync(server
, &msg
, &args
, &res
, 0);
2938 static int nfs4_proc_statfs(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fsstat
*fsstat
)
2940 struct nfs4_exception exception
= { };
2943 err
= nfs4_handle_exception(server
,
2944 _nfs4_proc_statfs(server
, fhandle
, fsstat
),
2946 } while (exception
.retry
);
2950 static int _nfs4_do_fsinfo(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
2951 struct nfs_fsinfo
*fsinfo
)
2953 struct nfs4_fsinfo_arg args
= {
2955 .bitmask
= server
->attr_bitmask
,
2957 struct nfs4_fsinfo_res res
= {
2960 struct rpc_message msg
= {
2961 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_FSINFO
],
2966 return nfs4_call_sync(server
, &msg
, &args
, &res
, 0);
2969 static int nfs4_do_fsinfo(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fsinfo
*fsinfo
)
2971 struct nfs4_exception exception
= { };
2975 err
= nfs4_handle_exception(server
,
2976 _nfs4_do_fsinfo(server
, fhandle
, fsinfo
),
2978 } while (exception
.retry
);
2982 static int nfs4_proc_fsinfo(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fsinfo
*fsinfo
)
2984 nfs_fattr_init(fsinfo
->fattr
);
2985 return nfs4_do_fsinfo(server
, fhandle
, fsinfo
);
2988 static int _nfs4_proc_pathconf(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
2989 struct nfs_pathconf
*pathconf
)
2991 struct nfs4_pathconf_arg args
= {
2993 .bitmask
= server
->attr_bitmask
,
2995 struct nfs4_pathconf_res res
= {
2996 .pathconf
= pathconf
,
2998 struct rpc_message msg
= {
2999 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_PATHCONF
],
3004 /* None of the pathconf attributes are mandatory to implement */
3005 if ((args
.bitmask
[0] & nfs4_pathconf_bitmap
[0]) == 0) {
3006 memset(pathconf
, 0, sizeof(*pathconf
));
3010 nfs_fattr_init(pathconf
->fattr
);
3011 return nfs4_call_sync(server
, &msg
, &args
, &res
, 0);
3014 static int nfs4_proc_pathconf(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
3015 struct nfs_pathconf
*pathconf
)
3017 struct nfs4_exception exception
= { };
3021 err
= nfs4_handle_exception(server
,
3022 _nfs4_proc_pathconf(server
, fhandle
, pathconf
),
3024 } while (exception
.retry
);
3028 static int nfs4_read_done(struct rpc_task
*task
, struct nfs_read_data
*data
)
3030 struct nfs_server
*server
= NFS_SERVER(data
->inode
);
3032 dprintk("--> %s\n", __func__
);
3034 if (!nfs4_sequence_done(task
, &data
->res
.seq_res
))
3037 if (nfs4_async_handle_error(task
, server
, data
->args
.context
->state
) == -EAGAIN
) {
3038 nfs_restart_rpc(task
, server
->nfs_client
);
3042 nfs_invalidate_atime(data
->inode
);
3043 if (task
->tk_status
> 0)
3044 renew_lease(server
, data
->timestamp
);
3048 static void nfs4_proc_read_setup(struct nfs_read_data
*data
, struct rpc_message
*msg
)
3050 data
->timestamp
= jiffies
;
3051 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_READ
];
3054 static int nfs4_write_done(struct rpc_task
*task
, struct nfs_write_data
*data
)
3056 struct inode
*inode
= data
->inode
;
3058 if (!nfs4_sequence_done(task
, &data
->res
.seq_res
))
3061 if (nfs4_async_handle_error(task
, NFS_SERVER(inode
), data
->args
.context
->state
) == -EAGAIN
) {
3062 nfs_restart_rpc(task
, NFS_SERVER(inode
)->nfs_client
);
3065 if (task
->tk_status
>= 0) {
3066 renew_lease(NFS_SERVER(inode
), data
->timestamp
);
3067 nfs_post_op_update_inode_force_wcc(inode
, data
->res
.fattr
);
3072 static void nfs4_proc_write_setup(struct nfs_write_data
*data
, struct rpc_message
*msg
)
3074 struct nfs_server
*server
= NFS_SERVER(data
->inode
);
3076 data
->args
.bitmask
= server
->cache_consistency_bitmask
;
3077 data
->res
.server
= server
;
3078 data
->timestamp
= jiffies
;
3080 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_WRITE
];
3083 static int nfs4_commit_done(struct rpc_task
*task
, struct nfs_write_data
*data
)
3085 struct inode
*inode
= data
->inode
;
3087 if (!nfs4_sequence_done(task
, &data
->res
.seq_res
))
3090 if (nfs4_async_handle_error(task
, NFS_SERVER(inode
), NULL
) == -EAGAIN
) {
3091 nfs_restart_rpc(task
, NFS_SERVER(inode
)->nfs_client
);
3094 nfs_refresh_inode(inode
, data
->res
.fattr
);
3098 static void nfs4_proc_commit_setup(struct nfs_write_data
*data
, struct rpc_message
*msg
)
3100 struct nfs_server
*server
= NFS_SERVER(data
->inode
);
3102 data
->args
.bitmask
= server
->cache_consistency_bitmask
;
3103 data
->res
.server
= server
;
3104 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_COMMIT
];
3107 struct nfs4_renewdata
{
3108 struct nfs_client
*client
;
3109 unsigned long timestamp
;
3113 * nfs4_proc_async_renew(): This is not one of the nfs_rpc_ops; it is a special
3114 * standalone procedure for queueing an asynchronous RENEW.
3116 static void nfs4_renew_release(void *calldata
)
3118 struct nfs4_renewdata
*data
= calldata
;
3119 struct nfs_client
*clp
= data
->client
;
3121 if (atomic_read(&clp
->cl_count
) > 1)
3122 nfs4_schedule_state_renewal(clp
);
3123 nfs_put_client(clp
);
3127 static void nfs4_renew_done(struct rpc_task
*task
, void *calldata
)
3129 struct nfs4_renewdata
*data
= calldata
;
3130 struct nfs_client
*clp
= data
->client
;
3131 unsigned long timestamp
= data
->timestamp
;
3133 if (task
->tk_status
< 0) {
3134 /* Unless we're shutting down, schedule state recovery! */
3135 if (test_bit(NFS_CS_RENEWD
, &clp
->cl_res_state
) != 0)
3136 nfs4_schedule_state_recovery(clp
);
3139 do_renew_lease(clp
, timestamp
);
3142 static const struct rpc_call_ops nfs4_renew_ops
= {
3143 .rpc_call_done
= nfs4_renew_done
,
3144 .rpc_release
= nfs4_renew_release
,
3147 int nfs4_proc_async_renew(struct nfs_client
*clp
, struct rpc_cred
*cred
)
3149 struct rpc_message msg
= {
3150 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RENEW
],
3154 struct nfs4_renewdata
*data
;
3156 if (!atomic_inc_not_zero(&clp
->cl_count
))
3158 data
= kmalloc(sizeof(*data
), GFP_KERNEL
);
3162 data
->timestamp
= jiffies
;
3163 return rpc_call_async(clp
->cl_rpcclient
, &msg
, RPC_TASK_SOFT
,
3164 &nfs4_renew_ops
, data
);
3167 int nfs4_proc_renew(struct nfs_client
*clp
, struct rpc_cred
*cred
)
3169 struct rpc_message msg
= {
3170 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RENEW
],
3174 unsigned long now
= jiffies
;
3177 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, 0);
3180 do_renew_lease(clp
, now
);
3184 static inline int nfs4_server_supports_acls(struct nfs_server
*server
)
3186 return (server
->caps
& NFS_CAP_ACLS
)
3187 && (server
->acl_bitmask
& ACL4_SUPPORT_ALLOW_ACL
)
3188 && (server
->acl_bitmask
& ACL4_SUPPORT_DENY_ACL
);
3191 /* Assuming that XATTR_SIZE_MAX is a multiple of PAGE_CACHE_SIZE, and that
3192 * it's OK to put sizeof(void) * (XATTR_SIZE_MAX/PAGE_CACHE_SIZE) bytes on
3195 #define NFS4ACL_MAXPAGES (XATTR_SIZE_MAX >> PAGE_CACHE_SHIFT)
3197 static void buf_to_pages(const void *buf
, size_t buflen
,
3198 struct page
**pages
, unsigned int *pgbase
)
3200 const void *p
= buf
;
3202 *pgbase
= offset_in_page(buf
);
3204 while (p
< buf
+ buflen
) {
3205 *(pages
++) = virt_to_page(p
);
3206 p
+= PAGE_CACHE_SIZE
;
3210 struct nfs4_cached_acl
{
3216 static void nfs4_set_cached_acl(struct inode
*inode
, struct nfs4_cached_acl
*acl
)
3218 struct nfs_inode
*nfsi
= NFS_I(inode
);
3220 spin_lock(&inode
->i_lock
);
3221 kfree(nfsi
->nfs4_acl
);
3222 nfsi
->nfs4_acl
= acl
;
3223 spin_unlock(&inode
->i_lock
);
3226 static void nfs4_zap_acl_attr(struct inode
*inode
)
3228 nfs4_set_cached_acl(inode
, NULL
);
3231 static inline ssize_t
nfs4_read_cached_acl(struct inode
*inode
, char *buf
, size_t buflen
)
3233 struct nfs_inode
*nfsi
= NFS_I(inode
);
3234 struct nfs4_cached_acl
*acl
;
3237 spin_lock(&inode
->i_lock
);
3238 acl
= nfsi
->nfs4_acl
;
3241 if (buf
== NULL
) /* user is just asking for length */
3243 if (acl
->cached
== 0)
3245 ret
= -ERANGE
; /* see getxattr(2) man page */
3246 if (acl
->len
> buflen
)
3248 memcpy(buf
, acl
->data
, acl
->len
);
3252 spin_unlock(&inode
->i_lock
);
3256 static void nfs4_write_cached_acl(struct inode
*inode
, const char *buf
, size_t acl_len
)
3258 struct nfs4_cached_acl
*acl
;
3260 if (buf
&& acl_len
<= PAGE_SIZE
) {
3261 acl
= kmalloc(sizeof(*acl
) + acl_len
, GFP_KERNEL
);
3265 memcpy(acl
->data
, buf
, acl_len
);
3267 acl
= kmalloc(sizeof(*acl
), GFP_KERNEL
);
3274 nfs4_set_cached_acl(inode
, acl
);
3277 static ssize_t
__nfs4_get_acl_uncached(struct inode
*inode
, void *buf
, size_t buflen
)
3279 struct page
*pages
[NFS4ACL_MAXPAGES
];
3280 struct nfs_getaclargs args
= {
3281 .fh
= NFS_FH(inode
),
3285 struct nfs_getaclres res
= {
3289 struct rpc_message msg
= {
3290 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GETACL
],
3294 struct page
*localpage
= NULL
;
3297 if (buflen
< PAGE_SIZE
) {
3298 /* As long as we're doing a round trip to the server anyway,
3299 * let's be prepared for a page of acl data. */
3300 localpage
= alloc_page(GFP_KERNEL
);
3301 resp_buf
= page_address(localpage
);
3302 if (localpage
== NULL
)
3304 args
.acl_pages
[0] = localpage
;
3305 args
.acl_pgbase
= 0;
3306 args
.acl_len
= PAGE_SIZE
;
3309 buf_to_pages(buf
, buflen
, args
.acl_pages
, &args
.acl_pgbase
);
3311 ret
= nfs4_call_sync(NFS_SERVER(inode
), &msg
, &args
, &res
, 0);
3314 if (res
.acl_len
> args
.acl_len
)
3315 nfs4_write_cached_acl(inode
, NULL
, res
.acl_len
);
3317 nfs4_write_cached_acl(inode
, resp_buf
, res
.acl_len
);
3320 if (res
.acl_len
> buflen
)
3323 memcpy(buf
, resp_buf
, res
.acl_len
);
3328 __free_page(localpage
);
3332 static ssize_t
nfs4_get_acl_uncached(struct inode
*inode
, void *buf
, size_t buflen
)
3334 struct nfs4_exception exception
= { };
3337 ret
= __nfs4_get_acl_uncached(inode
, buf
, buflen
);
3340 ret
= nfs4_handle_exception(NFS_SERVER(inode
), ret
, &exception
);
3341 } while (exception
.retry
);
3345 static ssize_t
nfs4_proc_get_acl(struct inode
*inode
, void *buf
, size_t buflen
)
3347 struct nfs_server
*server
= NFS_SERVER(inode
);
3350 if (!nfs4_server_supports_acls(server
))
3352 ret
= nfs_revalidate_inode(server
, inode
);
3355 ret
= nfs4_read_cached_acl(inode
, buf
, buflen
);
3358 return nfs4_get_acl_uncached(inode
, buf
, buflen
);
3361 static int __nfs4_proc_set_acl(struct inode
*inode
, const void *buf
, size_t buflen
)
3363 struct nfs_server
*server
= NFS_SERVER(inode
);
3364 struct page
*pages
[NFS4ACL_MAXPAGES
];
3365 struct nfs_setaclargs arg
= {
3366 .fh
= NFS_FH(inode
),
3370 struct nfs_setaclres res
;
3371 struct rpc_message msg
= {
3372 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETACL
],
3378 if (!nfs4_server_supports_acls(server
))
3380 nfs_inode_return_delegation(inode
);
3381 buf_to_pages(buf
, buflen
, arg
.acl_pages
, &arg
.acl_pgbase
);
3382 ret
= nfs4_call_sync(server
, &msg
, &arg
, &res
, 1);
3383 nfs_access_zap_cache(inode
);
3384 nfs_zap_acl_cache(inode
);
3388 static int nfs4_proc_set_acl(struct inode
*inode
, const void *buf
, size_t buflen
)
3390 struct nfs4_exception exception
= { };
3393 err
= nfs4_handle_exception(NFS_SERVER(inode
),
3394 __nfs4_proc_set_acl(inode
, buf
, buflen
),
3396 } while (exception
.retry
);
3401 nfs4_async_handle_error(struct rpc_task
*task
, const struct nfs_server
*server
, struct nfs4_state
*state
)
3403 struct nfs_client
*clp
= server
->nfs_client
;
3405 if (task
->tk_status
>= 0)
3407 switch(task
->tk_status
) {
3408 case -NFS4ERR_ADMIN_REVOKED
:
3409 case -NFS4ERR_BAD_STATEID
:
3410 case -NFS4ERR_OPENMODE
:
3413 nfs4_state_mark_reclaim_nograce(clp
, state
);
3414 goto do_state_recovery
;
3415 case -NFS4ERR_STALE_STATEID
:
3418 nfs4_state_mark_reclaim_reboot(clp
, state
);
3419 case -NFS4ERR_STALE_CLIENTID
:
3420 case -NFS4ERR_EXPIRED
:
3421 goto do_state_recovery
;
3422 #if defined(CONFIG_NFS_V4_1)
3423 case -NFS4ERR_BADSESSION
:
3424 case -NFS4ERR_BADSLOT
:
3425 case -NFS4ERR_BAD_HIGH_SLOT
:
3426 case -NFS4ERR_DEADSESSION
:
3427 case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION
:
3428 case -NFS4ERR_SEQ_FALSE_RETRY
:
3429 case -NFS4ERR_SEQ_MISORDERED
:
3430 dprintk("%s ERROR %d, Reset session\n", __func__
,
3432 nfs4_schedule_state_recovery(clp
);
3433 task
->tk_status
= 0;
3435 #endif /* CONFIG_NFS_V4_1 */
3436 case -NFS4ERR_DELAY
:
3437 nfs_inc_server_stats(server
, NFSIOS_DELAY
);
3438 case -NFS4ERR_GRACE
:
3440 rpc_delay(task
, NFS4_POLL_RETRY_MAX
);
3441 task
->tk_status
= 0;
3443 case -NFS4ERR_OLD_STATEID
:
3444 task
->tk_status
= 0;
3447 task
->tk_status
= nfs4_map_errors(task
->tk_status
);
3450 rpc_sleep_on(&clp
->cl_rpcwaitq
, task
, NULL
);
3451 nfs4_schedule_state_recovery(clp
);
3452 if (test_bit(NFS4CLNT_MANAGER_RUNNING
, &clp
->cl_state
) == 0)
3453 rpc_wake_up_queued_task(&clp
->cl_rpcwaitq
, task
);
3454 task
->tk_status
= 0;
3458 int nfs4_proc_setclientid(struct nfs_client
*clp
, u32 program
,
3459 unsigned short port
, struct rpc_cred
*cred
,
3460 struct nfs4_setclientid_res
*res
)
3462 nfs4_verifier sc_verifier
;
3463 struct nfs4_setclientid setclientid
= {
3464 .sc_verifier
= &sc_verifier
,
3467 struct rpc_message msg
= {
3468 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETCLIENTID
],
3469 .rpc_argp
= &setclientid
,
3477 p
= (__be32
*)sc_verifier
.data
;
3478 *p
++ = htonl((u32
)clp
->cl_boot_time
.tv_sec
);
3479 *p
= htonl((u32
)clp
->cl_boot_time
.tv_nsec
);
3482 setclientid
.sc_name_len
= scnprintf(setclientid
.sc_name
,
3483 sizeof(setclientid
.sc_name
), "%s/%s %s %s %u",
3485 rpc_peeraddr2str(clp
->cl_rpcclient
,
3487 rpc_peeraddr2str(clp
->cl_rpcclient
,
3489 clp
->cl_rpcclient
->cl_auth
->au_ops
->au_name
,
3490 clp
->cl_id_uniquifier
);
3491 setclientid
.sc_netid_len
= scnprintf(setclientid
.sc_netid
,
3492 sizeof(setclientid
.sc_netid
),
3493 rpc_peeraddr2str(clp
->cl_rpcclient
,
3494 RPC_DISPLAY_NETID
));
3495 setclientid
.sc_uaddr_len
= scnprintf(setclientid
.sc_uaddr
,
3496 sizeof(setclientid
.sc_uaddr
), "%s.%u.%u",
3497 clp
->cl_ipaddr
, port
>> 8, port
& 255);
3499 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, 0);
3500 if (status
!= -NFS4ERR_CLID_INUSE
)
3505 ssleep(clp
->cl_lease_time
+ 1);
3507 if (++clp
->cl_id_uniquifier
== 0)
3513 static int _nfs4_proc_setclientid_confirm(struct nfs_client
*clp
,
3514 struct nfs4_setclientid_res
*arg
,
3515 struct rpc_cred
*cred
)
3517 struct nfs_fsinfo fsinfo
;
3518 struct rpc_message msg
= {
3519 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETCLIENTID_CONFIRM
],
3521 .rpc_resp
= &fsinfo
,
3528 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, 0);
3530 spin_lock(&clp
->cl_lock
);
3531 clp
->cl_lease_time
= fsinfo
.lease_time
* HZ
;
3532 clp
->cl_last_renewal
= now
;
3533 spin_unlock(&clp
->cl_lock
);
3538 int nfs4_proc_setclientid_confirm(struct nfs_client
*clp
,
3539 struct nfs4_setclientid_res
*arg
,
3540 struct rpc_cred
*cred
)
3545 err
= _nfs4_proc_setclientid_confirm(clp
, arg
, cred
);
3549 case -NFS4ERR_RESOURCE
:
3550 /* The IBM lawyers misread another document! */
3551 case -NFS4ERR_DELAY
:
3553 err
= nfs4_delay(clp
->cl_rpcclient
, &timeout
);
3559 struct nfs4_delegreturndata
{
3560 struct nfs4_delegreturnargs args
;
3561 struct nfs4_delegreturnres res
;
3563 nfs4_stateid stateid
;
3564 unsigned long timestamp
;
3565 struct nfs_fattr fattr
;
3569 static void nfs4_delegreturn_done(struct rpc_task
*task
, void *calldata
)
3571 struct nfs4_delegreturndata
*data
= calldata
;
3573 if (!nfs4_sequence_done(task
, &data
->res
.seq_res
))
3576 switch (task
->tk_status
) {
3577 case -NFS4ERR_STALE_STATEID
:
3578 case -NFS4ERR_EXPIRED
:
3580 renew_lease(data
->res
.server
, data
->timestamp
);
3583 if (nfs4_async_handle_error(task
, data
->res
.server
, NULL
) ==
3585 nfs_restart_rpc(task
, data
->res
.server
->nfs_client
);
3589 data
->rpc_status
= task
->tk_status
;
3592 static void nfs4_delegreturn_release(void *calldata
)
3597 #if defined(CONFIG_NFS_V4_1)
3598 static void nfs4_delegreturn_prepare(struct rpc_task
*task
, void *data
)
3600 struct nfs4_delegreturndata
*d_data
;
3602 d_data
= (struct nfs4_delegreturndata
*)data
;
3604 if (nfs4_setup_sequence(d_data
->res
.server
,
3605 &d_data
->args
.seq_args
,
3606 &d_data
->res
.seq_res
, 1, task
))
3608 rpc_call_start(task
);
3610 #endif /* CONFIG_NFS_V4_1 */
3612 static const struct rpc_call_ops nfs4_delegreturn_ops
= {
3613 #if defined(CONFIG_NFS_V4_1)
3614 .rpc_call_prepare
= nfs4_delegreturn_prepare
,
3615 #endif /* CONFIG_NFS_V4_1 */
3616 .rpc_call_done
= nfs4_delegreturn_done
,
3617 .rpc_release
= nfs4_delegreturn_release
,
3620 static int _nfs4_proc_delegreturn(struct inode
*inode
, struct rpc_cred
*cred
, const nfs4_stateid
*stateid
, int issync
)
3622 struct nfs4_delegreturndata
*data
;
3623 struct nfs_server
*server
= NFS_SERVER(inode
);
3624 struct rpc_task
*task
;
3625 struct rpc_message msg
= {
3626 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_DELEGRETURN
],
3629 struct rpc_task_setup task_setup_data
= {
3630 .rpc_client
= server
->client
,
3631 .rpc_message
= &msg
,
3632 .callback_ops
= &nfs4_delegreturn_ops
,
3633 .flags
= RPC_TASK_ASYNC
,
3637 data
= kzalloc(sizeof(*data
), GFP_NOFS
);
3640 data
->args
.fhandle
= &data
->fh
;
3641 data
->args
.stateid
= &data
->stateid
;
3642 data
->args
.bitmask
= server
->attr_bitmask
;
3643 nfs_copy_fh(&data
->fh
, NFS_FH(inode
));
3644 memcpy(&data
->stateid
, stateid
, sizeof(data
->stateid
));
3645 data
->res
.fattr
= &data
->fattr
;
3646 data
->res
.server
= server
;
3647 data
->res
.seq_res
.sr_slotid
= NFS4_MAX_SLOT_TABLE
;
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
->res
.seq_res
.sr_slotid
= NFS4_MAX_SLOT_TABLE
;
3801 p
->arg
.stateid
= &lsp
->ls_stateid
;
3803 atomic_inc(&lsp
->ls_count
);
3804 /* Ensure we don't close file until we're done freeing locks! */
3805 p
->ctx
= get_nfs_open_context(ctx
);
3806 memcpy(&p
->fl
, fl
, sizeof(p
->fl
));
3807 p
->server
= NFS_SERVER(inode
);
3811 static void nfs4_locku_release_calldata(void *data
)
3813 struct nfs4_unlockdata
*calldata
= data
;
3814 nfs_free_seqid(calldata
->arg
.seqid
);
3815 nfs4_put_lock_state(calldata
->lsp
);
3816 put_nfs_open_context(calldata
->ctx
);
3820 static void nfs4_locku_done(struct rpc_task
*task
, void *data
)
3822 struct nfs4_unlockdata
*calldata
= data
;
3824 if (!nfs4_sequence_done(task
, &calldata
->res
.seq_res
))
3826 switch (task
->tk_status
) {
3828 memcpy(calldata
->lsp
->ls_stateid
.data
,
3829 calldata
->res
.stateid
.data
,
3830 sizeof(calldata
->lsp
->ls_stateid
.data
));
3831 renew_lease(calldata
->server
, calldata
->timestamp
);
3833 case -NFS4ERR_BAD_STATEID
:
3834 case -NFS4ERR_OLD_STATEID
:
3835 case -NFS4ERR_STALE_STATEID
:
3836 case -NFS4ERR_EXPIRED
:
3839 if (nfs4_async_handle_error(task
, calldata
->server
, NULL
) == -EAGAIN
)
3840 nfs_restart_rpc(task
,
3841 calldata
->server
->nfs_client
);
3845 static void nfs4_locku_prepare(struct rpc_task
*task
, void *data
)
3847 struct nfs4_unlockdata
*calldata
= data
;
3849 if (nfs_wait_on_sequence(calldata
->arg
.seqid
, task
) != 0)
3851 if ((calldata
->lsp
->ls_flags
& NFS_LOCK_INITIALIZED
) == 0) {
3852 /* Note: exit _without_ running nfs4_locku_done */
3853 task
->tk_action
= NULL
;
3856 calldata
->timestamp
= jiffies
;
3857 if (nfs4_setup_sequence(calldata
->server
,
3858 &calldata
->arg
.seq_args
,
3859 &calldata
->res
.seq_res
, 1, task
))
3861 rpc_call_start(task
);
3864 static const struct rpc_call_ops nfs4_locku_ops
= {
3865 .rpc_call_prepare
= nfs4_locku_prepare
,
3866 .rpc_call_done
= nfs4_locku_done
,
3867 .rpc_release
= nfs4_locku_release_calldata
,
3870 static struct rpc_task
*nfs4_do_unlck(struct file_lock
*fl
,
3871 struct nfs_open_context
*ctx
,
3872 struct nfs4_lock_state
*lsp
,
3873 struct nfs_seqid
*seqid
)
3875 struct nfs4_unlockdata
*data
;
3876 struct rpc_message msg
= {
3877 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOCKU
],
3878 .rpc_cred
= ctx
->cred
,
3880 struct rpc_task_setup task_setup_data
= {
3881 .rpc_client
= NFS_CLIENT(lsp
->ls_state
->inode
),
3882 .rpc_message
= &msg
,
3883 .callback_ops
= &nfs4_locku_ops
,
3884 .workqueue
= nfsiod_workqueue
,
3885 .flags
= RPC_TASK_ASYNC
,
3888 /* Ensure this is an unlock - when canceling a lock, the
3889 * canceled lock is passed in, and it won't be an unlock.
3891 fl
->fl_type
= F_UNLCK
;
3893 data
= nfs4_alloc_unlockdata(fl
, ctx
, lsp
, seqid
);
3895 nfs_free_seqid(seqid
);
3896 return ERR_PTR(-ENOMEM
);
3899 msg
.rpc_argp
= &data
->arg
,
3900 msg
.rpc_resp
= &data
->res
,
3901 task_setup_data
.callback_data
= data
;
3902 return rpc_run_task(&task_setup_data
);
3905 static int nfs4_proc_unlck(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
3907 struct nfs_inode
*nfsi
= NFS_I(state
->inode
);
3908 struct nfs_seqid
*seqid
;
3909 struct nfs4_lock_state
*lsp
;
3910 struct rpc_task
*task
;
3912 unsigned char fl_flags
= request
->fl_flags
;
3914 status
= nfs4_set_lock_state(state
, request
);
3915 /* Unlock _before_ we do the RPC call */
3916 request
->fl_flags
|= FL_EXISTS
;
3917 down_read(&nfsi
->rwsem
);
3918 if (do_vfs_lock(request
->fl_file
, request
) == -ENOENT
) {
3919 up_read(&nfsi
->rwsem
);
3922 up_read(&nfsi
->rwsem
);
3925 /* Is this a delegated lock? */
3926 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
))
3928 lsp
= request
->fl_u
.nfs4_fl
.owner
;
3929 seqid
= nfs_alloc_seqid(&lsp
->ls_seqid
, GFP_KERNEL
);
3933 task
= nfs4_do_unlck(request
, nfs_file_open_context(request
->fl_file
), lsp
, seqid
);
3934 status
= PTR_ERR(task
);
3937 status
= nfs4_wait_for_completion_rpc_task(task
);
3940 request
->fl_flags
= fl_flags
;
3944 struct nfs4_lockdata
{
3945 struct nfs_lock_args arg
;
3946 struct nfs_lock_res res
;
3947 struct nfs4_lock_state
*lsp
;
3948 struct nfs_open_context
*ctx
;
3949 struct file_lock fl
;
3950 unsigned long timestamp
;
3953 struct nfs_server
*server
;
3956 static struct nfs4_lockdata
*nfs4_alloc_lockdata(struct file_lock
*fl
,
3957 struct nfs_open_context
*ctx
, struct nfs4_lock_state
*lsp
,
3960 struct nfs4_lockdata
*p
;
3961 struct inode
*inode
= lsp
->ls_state
->inode
;
3962 struct nfs_server
*server
= NFS_SERVER(inode
);
3964 p
= kzalloc(sizeof(*p
), gfp_mask
);
3968 p
->arg
.fh
= NFS_FH(inode
);
3970 p
->arg
.open_seqid
= nfs_alloc_seqid(&lsp
->ls_state
->owner
->so_seqid
, gfp_mask
);
3971 if (p
->arg
.open_seqid
== NULL
)
3973 p
->arg
.lock_seqid
= nfs_alloc_seqid(&lsp
->ls_seqid
, gfp_mask
);
3974 if (p
->arg
.lock_seqid
== NULL
)
3975 goto out_free_seqid
;
3976 p
->arg
.lock_stateid
= &lsp
->ls_stateid
;
3977 p
->arg
.lock_owner
.clientid
= server
->nfs_client
->cl_clientid
;
3978 p
->arg
.lock_owner
.id
= lsp
->ls_id
.id
;
3979 p
->res
.lock_seqid
= p
->arg
.lock_seqid
;
3980 p
->res
.seq_res
.sr_slotid
= NFS4_MAX_SLOT_TABLE
;
3983 atomic_inc(&lsp
->ls_count
);
3984 p
->ctx
= get_nfs_open_context(ctx
);
3985 memcpy(&p
->fl
, fl
, sizeof(p
->fl
));
3988 nfs_free_seqid(p
->arg
.open_seqid
);
3994 static void nfs4_lock_prepare(struct rpc_task
*task
, void *calldata
)
3996 struct nfs4_lockdata
*data
= calldata
;
3997 struct nfs4_state
*state
= data
->lsp
->ls_state
;
3999 dprintk("%s: begin!\n", __func__
);
4000 if (nfs_wait_on_sequence(data
->arg
.lock_seqid
, task
) != 0)
4002 /* Do we need to do an open_to_lock_owner? */
4003 if (!(data
->arg
.lock_seqid
->sequence
->flags
& NFS_SEQID_CONFIRMED
)) {
4004 if (nfs_wait_on_sequence(data
->arg
.open_seqid
, task
) != 0)
4006 data
->arg
.open_stateid
= &state
->stateid
;
4007 data
->arg
.new_lock_owner
= 1;
4008 data
->res
.open_seqid
= data
->arg
.open_seqid
;
4010 data
->arg
.new_lock_owner
= 0;
4011 data
->timestamp
= jiffies
;
4012 if (nfs4_setup_sequence(data
->server
,
4013 &data
->arg
.seq_args
,
4014 &data
->res
.seq_res
, 1, task
))
4016 rpc_call_start(task
);
4017 dprintk("%s: done!, ret = %d\n", __func__
, data
->rpc_status
);
4020 static void nfs4_recover_lock_prepare(struct rpc_task
*task
, void *calldata
)
4022 rpc_task_set_priority(task
, RPC_PRIORITY_PRIVILEGED
);
4023 nfs4_lock_prepare(task
, calldata
);
4026 static void nfs4_lock_done(struct rpc_task
*task
, void *calldata
)
4028 struct nfs4_lockdata
*data
= calldata
;
4030 dprintk("%s: begin!\n", __func__
);
4032 if (!nfs4_sequence_done(task
, &data
->res
.seq_res
))
4035 data
->rpc_status
= task
->tk_status
;
4036 if (data
->arg
.new_lock_owner
!= 0) {
4037 if (data
->rpc_status
== 0)
4038 nfs_confirm_seqid(&data
->lsp
->ls_seqid
, 0);
4042 if (data
->rpc_status
== 0) {
4043 memcpy(data
->lsp
->ls_stateid
.data
, data
->res
.stateid
.data
,
4044 sizeof(data
->lsp
->ls_stateid
.data
));
4045 data
->lsp
->ls_flags
|= NFS_LOCK_INITIALIZED
;
4046 renew_lease(NFS_SERVER(data
->ctx
->path
.dentry
->d_inode
), data
->timestamp
);
4049 dprintk("%s: done, ret = %d!\n", __func__
, data
->rpc_status
);
4052 static void nfs4_lock_release(void *calldata
)
4054 struct nfs4_lockdata
*data
= calldata
;
4056 dprintk("%s: begin!\n", __func__
);
4057 nfs_free_seqid(data
->arg
.open_seqid
);
4058 if (data
->cancelled
!= 0) {
4059 struct rpc_task
*task
;
4060 task
= nfs4_do_unlck(&data
->fl
, data
->ctx
, data
->lsp
,
4061 data
->arg
.lock_seqid
);
4064 dprintk("%s: cancelling lock!\n", __func__
);
4066 nfs_free_seqid(data
->arg
.lock_seqid
);
4067 nfs4_put_lock_state(data
->lsp
);
4068 put_nfs_open_context(data
->ctx
);
4070 dprintk("%s: done!\n", __func__
);
4073 static const struct rpc_call_ops nfs4_lock_ops
= {
4074 .rpc_call_prepare
= nfs4_lock_prepare
,
4075 .rpc_call_done
= nfs4_lock_done
,
4076 .rpc_release
= nfs4_lock_release
,
4079 static const struct rpc_call_ops nfs4_recover_lock_ops
= {
4080 .rpc_call_prepare
= nfs4_recover_lock_prepare
,
4081 .rpc_call_done
= nfs4_lock_done
,
4082 .rpc_release
= nfs4_lock_release
,
4085 static void nfs4_handle_setlk_error(struct nfs_server
*server
, struct nfs4_lock_state
*lsp
, int new_lock_owner
, int error
)
4087 struct nfs_client
*clp
= server
->nfs_client
;
4088 struct nfs4_state
*state
= lsp
->ls_state
;
4091 case -NFS4ERR_ADMIN_REVOKED
:
4092 case -NFS4ERR_BAD_STATEID
:
4093 case -NFS4ERR_EXPIRED
:
4094 if (new_lock_owner
!= 0 ||
4095 (lsp
->ls_flags
& NFS_LOCK_INITIALIZED
) != 0)
4096 nfs4_state_mark_reclaim_nograce(clp
, state
);
4097 lsp
->ls_seqid
.flags
&= ~NFS_SEQID_CONFIRMED
;
4099 case -NFS4ERR_STALE_STATEID
:
4100 if (new_lock_owner
!= 0 ||
4101 (lsp
->ls_flags
& NFS_LOCK_INITIALIZED
) != 0)
4102 nfs4_state_mark_reclaim_reboot(clp
, state
);
4103 lsp
->ls_seqid
.flags
&= ~NFS_SEQID_CONFIRMED
;
4107 static int _nfs4_do_setlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*fl
, int recovery_type
)
4109 struct nfs4_lockdata
*data
;
4110 struct rpc_task
*task
;
4111 struct rpc_message msg
= {
4112 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOCK
],
4113 .rpc_cred
= state
->owner
->so_cred
,
4115 struct rpc_task_setup task_setup_data
= {
4116 .rpc_client
= NFS_CLIENT(state
->inode
),
4117 .rpc_message
= &msg
,
4118 .callback_ops
= &nfs4_lock_ops
,
4119 .workqueue
= nfsiod_workqueue
,
4120 .flags
= RPC_TASK_ASYNC
,
4124 dprintk("%s: begin!\n", __func__
);
4125 data
= nfs4_alloc_lockdata(fl
, nfs_file_open_context(fl
->fl_file
),
4126 fl
->fl_u
.nfs4_fl
.owner
,
4127 recovery_type
== NFS_LOCK_NEW
? GFP_KERNEL
: GFP_NOFS
);
4131 data
->arg
.block
= 1;
4132 if (recovery_type
> NFS_LOCK_NEW
) {
4133 if (recovery_type
== NFS_LOCK_RECLAIM
)
4134 data
->arg
.reclaim
= NFS_LOCK_RECLAIM
;
4135 task_setup_data
.callback_ops
= &nfs4_recover_lock_ops
;
4137 msg
.rpc_argp
= &data
->arg
,
4138 msg
.rpc_resp
= &data
->res
,
4139 task_setup_data
.callback_data
= data
;
4140 task
= rpc_run_task(&task_setup_data
);
4142 return PTR_ERR(task
);
4143 ret
= nfs4_wait_for_completion_rpc_task(task
);
4145 ret
= data
->rpc_status
;
4147 nfs4_handle_setlk_error(data
->server
, data
->lsp
,
4148 data
->arg
.new_lock_owner
, ret
);
4150 data
->cancelled
= 1;
4152 dprintk("%s: done, ret = %d!\n", __func__
, ret
);
4156 static int nfs4_lock_reclaim(struct nfs4_state
*state
, struct file_lock
*request
)
4158 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
4159 struct nfs4_exception exception
= { };
4163 /* Cache the lock if possible... */
4164 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) != 0)
4166 err
= _nfs4_do_setlk(state
, F_SETLK
, request
, NFS_LOCK_RECLAIM
);
4167 if (err
!= -NFS4ERR_DELAY
&& err
!= -EKEYEXPIRED
)
4169 nfs4_handle_exception(server
, err
, &exception
);
4170 } while (exception
.retry
);
4174 static int nfs4_lock_expired(struct nfs4_state
*state
, struct file_lock
*request
)
4176 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
4177 struct nfs4_exception exception
= { };
4180 err
= nfs4_set_lock_state(state
, request
);
4184 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) != 0)
4186 err
= _nfs4_do_setlk(state
, F_SETLK
, request
, NFS_LOCK_EXPIRED
);
4190 case -NFS4ERR_GRACE
:
4191 case -NFS4ERR_DELAY
:
4193 nfs4_handle_exception(server
, err
, &exception
);
4196 } while (exception
.retry
);
4201 static int _nfs4_proc_setlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
4203 struct nfs_inode
*nfsi
= NFS_I(state
->inode
);
4204 unsigned char fl_flags
= request
->fl_flags
;
4205 int status
= -ENOLCK
;
4207 if ((fl_flags
& FL_POSIX
) &&
4208 !test_bit(NFS_STATE_POSIX_LOCKS
, &state
->flags
))
4210 /* Is this a delegated open? */
4211 status
= nfs4_set_lock_state(state
, request
);
4214 request
->fl_flags
|= FL_ACCESS
;
4215 status
= do_vfs_lock(request
->fl_file
, request
);
4218 down_read(&nfsi
->rwsem
);
4219 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
)) {
4220 /* Yes: cache locks! */
4221 /* ...but avoid races with delegation recall... */
4222 request
->fl_flags
= fl_flags
& ~FL_SLEEP
;
4223 status
= do_vfs_lock(request
->fl_file
, request
);
4226 status
= _nfs4_do_setlk(state
, cmd
, request
, NFS_LOCK_NEW
);
4229 /* Note: we always want to sleep here! */
4230 request
->fl_flags
= fl_flags
| FL_SLEEP
;
4231 if (do_vfs_lock(request
->fl_file
, request
) < 0)
4232 printk(KERN_WARNING
"%s: VFS is out of sync with lock manager!\n", __func__
);
4234 up_read(&nfsi
->rwsem
);
4236 request
->fl_flags
= fl_flags
;
4240 static int nfs4_proc_setlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
4242 struct nfs4_exception exception
= { };
4246 err
= _nfs4_proc_setlk(state
, cmd
, request
);
4247 if (err
== -NFS4ERR_DENIED
)
4249 err
= nfs4_handle_exception(NFS_SERVER(state
->inode
),
4251 } while (exception
.retry
);
4256 nfs4_proc_lock(struct file
*filp
, int cmd
, struct file_lock
*request
)
4258 struct nfs_open_context
*ctx
;
4259 struct nfs4_state
*state
;
4260 unsigned long timeout
= NFS4_LOCK_MINTIMEOUT
;
4263 /* verify open state */
4264 ctx
= nfs_file_open_context(filp
);
4267 if (request
->fl_start
< 0 || request
->fl_end
< 0)
4270 if (IS_GETLK(cmd
)) {
4272 return nfs4_proc_getlk(state
, F_GETLK
, request
);
4276 if (!(IS_SETLK(cmd
) || IS_SETLKW(cmd
)))
4279 if (request
->fl_type
== F_UNLCK
) {
4281 return nfs4_proc_unlck(state
, cmd
, request
);
4288 status
= nfs4_proc_setlk(state
, cmd
, request
);
4289 if ((status
!= -EAGAIN
) || IS_SETLK(cmd
))
4291 timeout
= nfs4_set_lock_task_retry(timeout
);
4292 status
= -ERESTARTSYS
;
4295 } while(status
< 0);
4299 int nfs4_lock_delegation_recall(struct nfs4_state
*state
, struct file_lock
*fl
)
4301 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
4302 struct nfs4_exception exception
= { };
4305 err
= nfs4_set_lock_state(state
, fl
);
4309 err
= _nfs4_do_setlk(state
, F_SETLK
, fl
, NFS_LOCK_NEW
);
4312 printk(KERN_ERR
"%s: unhandled error %d.\n",
4317 case -NFS4ERR_EXPIRED
:
4318 case -NFS4ERR_STALE_CLIENTID
:
4319 case -NFS4ERR_STALE_STATEID
:
4320 case -NFS4ERR_BADSESSION
:
4321 case -NFS4ERR_BADSLOT
:
4322 case -NFS4ERR_BAD_HIGH_SLOT
:
4323 case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION
:
4324 case -NFS4ERR_DEADSESSION
:
4325 nfs4_schedule_state_recovery(server
->nfs_client
);
4329 * The show must go on: exit, but mark the
4330 * stateid as needing recovery.
4332 case -NFS4ERR_ADMIN_REVOKED
:
4333 case -NFS4ERR_BAD_STATEID
:
4334 case -NFS4ERR_OPENMODE
:
4335 nfs4_state_mark_reclaim_nograce(server
->nfs_client
, state
);
4339 case -NFS4ERR_DENIED
:
4340 /* kill_proc(fl->fl_pid, SIGLOST, 1); */
4343 case -NFS4ERR_DELAY
:
4347 err
= nfs4_handle_exception(server
, err
, &exception
);
4348 } while (exception
.retry
);
4353 static void nfs4_release_lockowner_release(void *calldata
)
4358 const struct rpc_call_ops nfs4_release_lockowner_ops
= {
4359 .rpc_release
= nfs4_release_lockowner_release
,
4362 void nfs4_release_lockowner(const struct nfs4_lock_state
*lsp
)
4364 struct nfs_server
*server
= lsp
->ls_state
->owner
->so_server
;
4365 struct nfs_release_lockowner_args
*args
;
4366 struct rpc_message msg
= {
4367 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RELEASE_LOCKOWNER
],
4370 if (server
->nfs_client
->cl_mvops
->minor_version
!= 0)
4372 args
= kmalloc(sizeof(*args
), GFP_NOFS
);
4375 args
->lock_owner
.clientid
= server
->nfs_client
->cl_clientid
;
4376 args
->lock_owner
.id
= lsp
->ls_id
.id
;
4377 msg
.rpc_argp
= args
;
4378 rpc_call_async(server
->client
, &msg
, 0, &nfs4_release_lockowner_ops
, args
);
4381 #define XATTR_NAME_NFSV4_ACL "system.nfs4_acl"
4383 int nfs4_setxattr(struct dentry
*dentry
, const char *key
, const void *buf
,
4384 size_t buflen
, int flags
)
4386 struct inode
*inode
= dentry
->d_inode
;
4388 if (strcmp(key
, XATTR_NAME_NFSV4_ACL
) != 0)
4391 return nfs4_proc_set_acl(inode
, buf
, buflen
);
4394 /* The getxattr man page suggests returning -ENODATA for unknown attributes,
4395 * and that's what we'll do for e.g. user attributes that haven't been set.
4396 * But we'll follow ext2/ext3's lead by returning -EOPNOTSUPP for unsupported
4397 * attributes in kernel-managed attribute namespaces. */
4398 ssize_t
nfs4_getxattr(struct dentry
*dentry
, const char *key
, void *buf
,
4401 struct inode
*inode
= dentry
->d_inode
;
4403 if (strcmp(key
, XATTR_NAME_NFSV4_ACL
) != 0)
4406 return nfs4_proc_get_acl(inode
, buf
, buflen
);
4409 ssize_t
nfs4_listxattr(struct dentry
*dentry
, char *buf
, size_t buflen
)
4411 size_t len
= strlen(XATTR_NAME_NFSV4_ACL
) + 1;
4413 if (!nfs4_server_supports_acls(NFS_SERVER(dentry
->d_inode
)))
4415 if (buf
&& buflen
< len
)
4418 memcpy(buf
, XATTR_NAME_NFSV4_ACL
, len
);
4422 static void nfs_fixup_referral_attributes(struct nfs_fattr
*fattr
)
4424 if (!((fattr
->valid
& NFS_ATTR_FATTR_FILEID
) &&
4425 (fattr
->valid
& NFS_ATTR_FATTR_FSID
) &&
4426 (fattr
->valid
& NFS_ATTR_FATTR_V4_REFERRAL
)))
4429 fattr
->valid
|= NFS_ATTR_FATTR_TYPE
| NFS_ATTR_FATTR_MODE
|
4430 NFS_ATTR_FATTR_NLINK
;
4431 fattr
->mode
= S_IFDIR
| S_IRUGO
| S_IXUGO
;
4435 int nfs4_proc_fs_locations(struct inode
*dir
, const struct qstr
*name
,
4436 struct nfs4_fs_locations
*fs_locations
, struct page
*page
)
4438 struct nfs_server
*server
= NFS_SERVER(dir
);
4440 [0] = FATTR4_WORD0_FSID
| FATTR4_WORD0_FS_LOCATIONS
,
4441 [1] = FATTR4_WORD1_MOUNTED_ON_FILEID
,
4443 struct nfs4_fs_locations_arg args
= {
4444 .dir_fh
= NFS_FH(dir
),
4449 struct nfs4_fs_locations_res res
= {
4450 .fs_locations
= fs_locations
,
4452 struct rpc_message msg
= {
4453 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_FS_LOCATIONS
],
4459 dprintk("%s: start\n", __func__
);
4460 nfs_fattr_init(&fs_locations
->fattr
);
4461 fs_locations
->server
= server
;
4462 fs_locations
->nlocations
= 0;
4463 status
= nfs4_call_sync(server
, &msg
, &args
, &res
, 0);
4464 nfs_fixup_referral_attributes(&fs_locations
->fattr
);
4465 dprintk("%s: returned status = %d\n", __func__
, status
);
4469 #ifdef CONFIG_NFS_V4_1
4471 * nfs4_proc_exchange_id()
4473 * Since the clientid has expired, all compounds using sessions
4474 * associated with the stale clientid will be returning
4475 * NFS4ERR_BADSESSION in the sequence operation, and will therefore
4476 * be in some phase of session reset.
4478 int nfs4_proc_exchange_id(struct nfs_client
*clp
, struct rpc_cred
*cred
)
4480 nfs4_verifier verifier
;
4481 struct nfs41_exchange_id_args args
= {
4483 .flags
= clp
->cl_exchange_flags
,
4485 struct nfs41_exchange_id_res res
= {
4489 struct rpc_message msg
= {
4490 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_EXCHANGE_ID
],
4497 dprintk("--> %s\n", __func__
);
4498 BUG_ON(clp
== NULL
);
4500 /* Remove server-only flags */
4501 args
.flags
&= ~EXCHGID4_FLAG_CONFIRMED_R
;
4503 p
= (u32
*)verifier
.data
;
4504 *p
++ = htonl((u32
)clp
->cl_boot_time
.tv_sec
);
4505 *p
= htonl((u32
)clp
->cl_boot_time
.tv_nsec
);
4506 args
.verifier
= &verifier
;
4509 args
.id_len
= scnprintf(args
.id
, sizeof(args
.id
),
4512 rpc_peeraddr2str(clp
->cl_rpcclient
,
4514 clp
->cl_id_uniquifier
);
4516 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, 0);
4518 if (status
!= -NFS4ERR_CLID_INUSE
)
4524 if (++clp
->cl_id_uniquifier
== 0)
4528 dprintk("<-- %s status= %d\n", __func__
, status
);
4532 struct nfs4_get_lease_time_data
{
4533 struct nfs4_get_lease_time_args
*args
;
4534 struct nfs4_get_lease_time_res
*res
;
4535 struct nfs_client
*clp
;
4538 static void nfs4_get_lease_time_prepare(struct rpc_task
*task
,
4542 struct nfs4_get_lease_time_data
*data
=
4543 (struct nfs4_get_lease_time_data
*)calldata
;
4545 dprintk("--> %s\n", __func__
);
4546 rpc_task_set_priority(task
, RPC_PRIORITY_PRIVILEGED
);
4547 /* just setup sequence, do not trigger session recovery
4548 since we're invoked within one */
4549 ret
= nfs41_setup_sequence(data
->clp
->cl_session
,
4550 &data
->args
->la_seq_args
,
4551 &data
->res
->lr_seq_res
, 0, task
);
4553 BUG_ON(ret
== -EAGAIN
);
4554 rpc_call_start(task
);
4555 dprintk("<-- %s\n", __func__
);
4559 * Called from nfs4_state_manager thread for session setup, so don't recover
4560 * from sequence operation or clientid errors.
4562 static void nfs4_get_lease_time_done(struct rpc_task
*task
, void *calldata
)
4564 struct nfs4_get_lease_time_data
*data
=
4565 (struct nfs4_get_lease_time_data
*)calldata
;
4567 dprintk("--> %s\n", __func__
);
4568 if (!nfs41_sequence_done(task
, &data
->res
->lr_seq_res
))
4570 switch (task
->tk_status
) {
4571 case -NFS4ERR_DELAY
:
4572 case -NFS4ERR_GRACE
:
4574 dprintk("%s Retry: tk_status %d\n", __func__
, task
->tk_status
);
4575 rpc_delay(task
, NFS4_POLL_RETRY_MIN
);
4576 task
->tk_status
= 0;
4577 nfs_restart_rpc(task
, data
->clp
);
4580 dprintk("<-- %s\n", __func__
);
4583 struct rpc_call_ops nfs4_get_lease_time_ops
= {
4584 .rpc_call_prepare
= nfs4_get_lease_time_prepare
,
4585 .rpc_call_done
= nfs4_get_lease_time_done
,
4588 int nfs4_proc_get_lease_time(struct nfs_client
*clp
, struct nfs_fsinfo
*fsinfo
)
4590 struct rpc_task
*task
;
4591 struct nfs4_get_lease_time_args args
;
4592 struct nfs4_get_lease_time_res res
= {
4593 .lr_fsinfo
= fsinfo
,
4595 struct nfs4_get_lease_time_data data
= {
4600 struct rpc_message msg
= {
4601 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GET_LEASE_TIME
],
4605 struct rpc_task_setup task_setup
= {
4606 .rpc_client
= clp
->cl_rpcclient
,
4607 .rpc_message
= &msg
,
4608 .callback_ops
= &nfs4_get_lease_time_ops
,
4609 .callback_data
= &data
4613 res
.lr_seq_res
.sr_slotid
= NFS4_MAX_SLOT_TABLE
;
4614 dprintk("--> %s\n", __func__
);
4615 task
= rpc_run_task(&task_setup
);
4618 status
= PTR_ERR(task
);
4620 status
= task
->tk_status
;
4623 dprintk("<-- %s return %d\n", __func__
, status
);
4629 * Reset a slot table
4631 static int nfs4_reset_slot_table(struct nfs4_slot_table
*tbl
, u32 max_reqs
,
4634 struct nfs4_slot
*new = NULL
;
4638 dprintk("--> %s: max_reqs=%u, tbl->max_slots %d\n", __func__
,
4639 max_reqs
, tbl
->max_slots
);
4641 /* Does the newly negotiated max_reqs match the existing slot table? */
4642 if (max_reqs
!= tbl
->max_slots
) {
4644 new = kmalloc(max_reqs
* sizeof(struct nfs4_slot
),
4651 spin_lock(&tbl
->slot_tbl_lock
);
4654 tbl
->max_slots
= max_reqs
;
4656 for (i
= 0; i
< tbl
->max_slots
; ++i
)
4657 tbl
->slots
[i
].seq_nr
= ivalue
;
4658 spin_unlock(&tbl
->slot_tbl_lock
);
4659 dprintk("%s: tbl=%p slots=%p max_slots=%d\n", __func__
,
4660 tbl
, tbl
->slots
, tbl
->max_slots
);
4662 dprintk("<-- %s: return %d\n", __func__
, ret
);
4667 * Reset the forechannel and backchannel slot tables
4669 static int nfs4_reset_slot_tables(struct nfs4_session
*session
)
4673 status
= nfs4_reset_slot_table(&session
->fc_slot_table
,
4674 session
->fc_attrs
.max_reqs
, 1);
4678 status
= nfs4_reset_slot_table(&session
->bc_slot_table
,
4679 session
->bc_attrs
.max_reqs
, 0);
4683 /* Destroy the slot table */
4684 static void nfs4_destroy_slot_tables(struct nfs4_session
*session
)
4686 if (session
->fc_slot_table
.slots
!= NULL
) {
4687 kfree(session
->fc_slot_table
.slots
);
4688 session
->fc_slot_table
.slots
= NULL
;
4690 if (session
->bc_slot_table
.slots
!= NULL
) {
4691 kfree(session
->bc_slot_table
.slots
);
4692 session
->bc_slot_table
.slots
= NULL
;
4698 * Initialize slot table
4700 static int nfs4_init_slot_table(struct nfs4_slot_table
*tbl
,
4701 int max_slots
, int ivalue
)
4703 struct nfs4_slot
*slot
;
4706 BUG_ON(max_slots
> NFS4_MAX_SLOT_TABLE
);
4708 dprintk("--> %s: max_reqs=%u\n", __func__
, max_slots
);
4710 slot
= kcalloc(max_slots
, sizeof(struct nfs4_slot
), GFP_NOFS
);
4715 spin_lock(&tbl
->slot_tbl_lock
);
4716 tbl
->max_slots
= max_slots
;
4718 tbl
->highest_used_slotid
= -1; /* no slot is currently used */
4719 spin_unlock(&tbl
->slot_tbl_lock
);
4720 dprintk("%s: tbl=%p slots=%p max_slots=%d\n", __func__
,
4721 tbl
, tbl
->slots
, tbl
->max_slots
);
4723 dprintk("<-- %s: return %d\n", __func__
, ret
);
4728 * Initialize the forechannel and backchannel tables
4730 static int nfs4_init_slot_tables(struct nfs4_session
*session
)
4732 struct nfs4_slot_table
*tbl
;
4735 tbl
= &session
->fc_slot_table
;
4736 if (tbl
->slots
== NULL
) {
4737 status
= nfs4_init_slot_table(tbl
,
4738 session
->fc_attrs
.max_reqs
, 1);
4743 tbl
= &session
->bc_slot_table
;
4744 if (tbl
->slots
== NULL
) {
4745 status
= nfs4_init_slot_table(tbl
,
4746 session
->bc_attrs
.max_reqs
, 0);
4748 nfs4_destroy_slot_tables(session
);
4754 struct nfs4_session
*nfs4_alloc_session(struct nfs_client
*clp
)
4756 struct nfs4_session
*session
;
4757 struct nfs4_slot_table
*tbl
;
4759 session
= kzalloc(sizeof(struct nfs4_session
), GFP_NOFS
);
4763 init_completion(&session
->complete
);
4765 tbl
= &session
->fc_slot_table
;
4766 tbl
->highest_used_slotid
= -1;
4767 spin_lock_init(&tbl
->slot_tbl_lock
);
4768 rpc_init_priority_wait_queue(&tbl
->slot_tbl_waitq
, "ForeChannel Slot table");
4770 tbl
= &session
->bc_slot_table
;
4771 tbl
->highest_used_slotid
= -1;
4772 spin_lock_init(&tbl
->slot_tbl_lock
);
4773 rpc_init_wait_queue(&tbl
->slot_tbl_waitq
, "BackChannel Slot table");
4775 session
->session_state
= 1<<NFS4_SESSION_INITING
;
4781 void nfs4_destroy_session(struct nfs4_session
*session
)
4783 nfs4_proc_destroy_session(session
);
4784 dprintk("%s Destroy backchannel for xprt %p\n",
4785 __func__
, session
->clp
->cl_rpcclient
->cl_xprt
);
4786 xprt_destroy_backchannel(session
->clp
->cl_rpcclient
->cl_xprt
,
4787 NFS41_BC_MIN_CALLBACKS
);
4788 nfs4_destroy_slot_tables(session
);
4793 * Initialize the values to be used by the client in CREATE_SESSION
4794 * If nfs4_init_session set the fore channel request and response sizes,
4797 * Set the back channel max_resp_sz_cached to zero to force the client to
4798 * always set csa_cachethis to FALSE because the current implementation
4799 * of the back channel DRC only supports caching the CB_SEQUENCE operation.
4801 static void nfs4_init_channel_attrs(struct nfs41_create_session_args
*args
)
4803 struct nfs4_session
*session
= args
->client
->cl_session
;
4804 unsigned int mxrqst_sz
= session
->fc_attrs
.max_rqst_sz
,
4805 mxresp_sz
= session
->fc_attrs
.max_resp_sz
;
4808 mxrqst_sz
= NFS_MAX_FILE_IO_SIZE
;
4810 mxresp_sz
= NFS_MAX_FILE_IO_SIZE
;
4811 /* Fore channel attributes */
4812 args
->fc_attrs
.headerpadsz
= 0;
4813 args
->fc_attrs
.max_rqst_sz
= mxrqst_sz
;
4814 args
->fc_attrs
.max_resp_sz
= mxresp_sz
;
4815 args
->fc_attrs
.max_ops
= NFS4_MAX_OPS
;
4816 args
->fc_attrs
.max_reqs
= session
->clp
->cl_rpcclient
->cl_xprt
->max_reqs
;
4818 dprintk("%s: Fore Channel : max_rqst_sz=%u max_resp_sz=%u "
4819 "max_ops=%u max_reqs=%u\n",
4821 args
->fc_attrs
.max_rqst_sz
, args
->fc_attrs
.max_resp_sz
,
4822 args
->fc_attrs
.max_ops
, args
->fc_attrs
.max_reqs
);
4824 /* Back channel attributes */
4825 args
->bc_attrs
.headerpadsz
= 0;
4826 args
->bc_attrs
.max_rqst_sz
= PAGE_SIZE
;
4827 args
->bc_attrs
.max_resp_sz
= PAGE_SIZE
;
4828 args
->bc_attrs
.max_resp_sz_cached
= 0;
4829 args
->bc_attrs
.max_ops
= NFS4_MAX_BACK_CHANNEL_OPS
;
4830 args
->bc_attrs
.max_reqs
= 1;
4832 dprintk("%s: Back Channel : max_rqst_sz=%u max_resp_sz=%u "
4833 "max_resp_sz_cached=%u max_ops=%u max_reqs=%u\n",
4835 args
->bc_attrs
.max_rqst_sz
, args
->bc_attrs
.max_resp_sz
,
4836 args
->bc_attrs
.max_resp_sz_cached
, args
->bc_attrs
.max_ops
,
4837 args
->bc_attrs
.max_reqs
);
4840 static int _verify_channel_attr(char *chan
, char *attr_name
, u32 sent
, u32 rcvd
)
4844 printk(KERN_WARNING
"%s: Session INVALID: %s channel %s increased. "
4845 "sent=%u rcvd=%u\n", __func__
, chan
, attr_name
, sent
, rcvd
);
4849 #define _verify_fore_channel_attr(_name_) \
4850 _verify_channel_attr("fore", #_name_, \
4851 args->fc_attrs._name_, \
4852 session->fc_attrs._name_)
4854 #define _verify_back_channel_attr(_name_) \
4855 _verify_channel_attr("back", #_name_, \
4856 args->bc_attrs._name_, \
4857 session->bc_attrs._name_)
4860 * The server is not allowed to increase the fore channel header pad size,
4861 * maximum response size, or maximum number of operations.
4863 * The back channel attributes are only negotiatied down: We send what the
4864 * (back channel) server insists upon.
4866 static int nfs4_verify_channel_attrs(struct nfs41_create_session_args
*args
,
4867 struct nfs4_session
*session
)
4871 ret
|= _verify_fore_channel_attr(headerpadsz
);
4872 ret
|= _verify_fore_channel_attr(max_resp_sz
);
4873 ret
|= _verify_fore_channel_attr(max_ops
);
4875 ret
|= _verify_back_channel_attr(headerpadsz
);
4876 ret
|= _verify_back_channel_attr(max_rqst_sz
);
4877 ret
|= _verify_back_channel_attr(max_resp_sz
);
4878 ret
|= _verify_back_channel_attr(max_resp_sz_cached
);
4879 ret
|= _verify_back_channel_attr(max_ops
);
4880 ret
|= _verify_back_channel_attr(max_reqs
);
4885 static int _nfs4_proc_create_session(struct nfs_client
*clp
)
4887 struct nfs4_session
*session
= clp
->cl_session
;
4888 struct nfs41_create_session_args args
= {
4890 .cb_program
= NFS4_CALLBACK
,
4892 struct nfs41_create_session_res res
= {
4895 struct rpc_message msg
= {
4896 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_CREATE_SESSION
],
4902 nfs4_init_channel_attrs(&args
);
4903 args
.flags
= (SESSION4_PERSIST
| SESSION4_BACK_CHAN
);
4905 status
= rpc_call_sync(session
->clp
->cl_rpcclient
, &msg
, 0);
4908 /* Verify the session's negotiated channel_attrs values */
4909 status
= nfs4_verify_channel_attrs(&args
, session
);
4911 /* Increment the clientid slot sequence id */
4919 * Issues a CREATE_SESSION operation to the server.
4920 * It is the responsibility of the caller to verify the session is
4921 * expired before calling this routine.
4923 int nfs4_proc_create_session(struct nfs_client
*clp
)
4927 struct nfs4_session
*session
= clp
->cl_session
;
4929 dprintk("--> %s clp=%p session=%p\n", __func__
, clp
, session
);
4931 status
= _nfs4_proc_create_session(clp
);
4935 /* Init and reset the fore channel */
4936 status
= nfs4_init_slot_tables(session
);
4937 dprintk("slot table initialization returned %d\n", status
);
4940 status
= nfs4_reset_slot_tables(session
);
4941 dprintk("slot table reset returned %d\n", status
);
4945 ptr
= (unsigned *)&session
->sess_id
.data
[0];
4946 dprintk("%s client>seqid %d sessionid %u:%u:%u:%u\n", __func__
,
4947 clp
->cl_seqid
, ptr
[0], ptr
[1], ptr
[2], ptr
[3]);
4949 dprintk("<-- %s\n", __func__
);
4954 * Issue the over-the-wire RPC DESTROY_SESSION.
4955 * The caller must serialize access to this routine.
4957 int nfs4_proc_destroy_session(struct nfs4_session
*session
)
4960 struct rpc_message msg
;
4962 dprintk("--> nfs4_proc_destroy_session\n");
4964 /* session is still being setup */
4965 if (session
->clp
->cl_cons_state
!= NFS_CS_READY
)
4968 msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_DESTROY_SESSION
];
4969 msg
.rpc_argp
= session
;
4970 msg
.rpc_resp
= NULL
;
4971 msg
.rpc_cred
= NULL
;
4972 status
= rpc_call_sync(session
->clp
->cl_rpcclient
, &msg
, 0);
4976 "Got error %d from the server on DESTROY_SESSION. "
4977 "Session has been destroyed regardless...\n", status
);
4979 dprintk("<-- nfs4_proc_destroy_session\n");
4983 int nfs4_init_session(struct nfs_server
*server
)
4985 struct nfs_client
*clp
= server
->nfs_client
;
4986 struct nfs4_session
*session
;
4987 unsigned int rsize
, wsize
;
4990 if (!nfs4_has_session(clp
))
4993 session
= clp
->cl_session
;
4994 if (!test_and_clear_bit(NFS4_SESSION_INITING
, &session
->session_state
))
4997 rsize
= server
->rsize
;
4999 rsize
= NFS_MAX_FILE_IO_SIZE
;
5000 wsize
= server
->wsize
;
5002 wsize
= NFS_MAX_FILE_IO_SIZE
;
5004 session
->fc_attrs
.max_rqst_sz
= wsize
+ nfs41_maxwrite_overhead
;
5005 session
->fc_attrs
.max_resp_sz
= rsize
+ nfs41_maxread_overhead
;
5007 ret
= nfs4_recover_expired_lease(server
);
5009 ret
= nfs4_check_client_ready(clp
);
5014 * Renew the cl_session lease.
5016 struct nfs4_sequence_data
{
5017 struct nfs_client
*clp
;
5018 struct nfs4_sequence_args args
;
5019 struct nfs4_sequence_res res
;
5022 static void nfs41_sequence_release(void *data
)
5024 struct nfs4_sequence_data
*calldata
= data
;
5025 struct nfs_client
*clp
= calldata
->clp
;
5027 if (atomic_read(&clp
->cl_count
) > 1)
5028 nfs4_schedule_state_renewal(clp
);
5029 nfs_put_client(clp
);
5033 static int nfs41_sequence_handle_errors(struct rpc_task
*task
, struct nfs_client
*clp
)
5035 switch(task
->tk_status
) {
5036 case -NFS4ERR_DELAY
:
5038 rpc_delay(task
, NFS4_POLL_RETRY_MAX
);
5041 nfs4_schedule_state_recovery(clp
);
5046 static void nfs41_sequence_call_done(struct rpc_task
*task
, void *data
)
5048 struct nfs4_sequence_data
*calldata
= data
;
5049 struct nfs_client
*clp
= calldata
->clp
;
5051 if (!nfs41_sequence_done(task
, task
->tk_msg
.rpc_resp
))
5054 if (task
->tk_status
< 0) {
5055 dprintk("%s ERROR %d\n", __func__
, task
->tk_status
);
5056 if (atomic_read(&clp
->cl_count
) == 1)
5059 if (nfs41_sequence_handle_errors(task
, clp
) == -EAGAIN
) {
5060 rpc_restart_call_prepare(task
);
5064 dprintk("%s rpc_cred %p\n", __func__
, task
->tk_msg
.rpc_cred
);
5066 dprintk("<-- %s\n", __func__
);
5069 static void nfs41_sequence_prepare(struct rpc_task
*task
, void *data
)
5071 struct nfs4_sequence_data
*calldata
= data
;
5072 struct nfs_client
*clp
= calldata
->clp
;
5073 struct nfs4_sequence_args
*args
;
5074 struct nfs4_sequence_res
*res
;
5076 args
= task
->tk_msg
.rpc_argp
;
5077 res
= task
->tk_msg
.rpc_resp
;
5079 if (nfs41_setup_sequence(clp
->cl_session
, args
, res
, 0, task
))
5081 rpc_call_start(task
);
5084 static const struct rpc_call_ops nfs41_sequence_ops
= {
5085 .rpc_call_done
= nfs41_sequence_call_done
,
5086 .rpc_call_prepare
= nfs41_sequence_prepare
,
5087 .rpc_release
= nfs41_sequence_release
,
5090 static struct rpc_task
*_nfs41_proc_sequence(struct nfs_client
*clp
, struct rpc_cred
*cred
)
5092 struct nfs4_sequence_data
*calldata
;
5093 struct rpc_message msg
= {
5094 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SEQUENCE
],
5097 struct rpc_task_setup task_setup_data
= {
5098 .rpc_client
= clp
->cl_rpcclient
,
5099 .rpc_message
= &msg
,
5100 .callback_ops
= &nfs41_sequence_ops
,
5101 .flags
= RPC_TASK_ASYNC
| RPC_TASK_SOFT
,
5104 if (!atomic_inc_not_zero(&clp
->cl_count
))
5105 return ERR_PTR(-EIO
);
5106 calldata
= kmalloc(sizeof(*calldata
), GFP_NOFS
);
5107 if (calldata
== NULL
) {
5108 nfs_put_client(clp
);
5109 return ERR_PTR(-ENOMEM
);
5111 calldata
->res
.sr_slotid
= NFS4_MAX_SLOT_TABLE
;
5112 msg
.rpc_argp
= &calldata
->args
;
5113 msg
.rpc_resp
= &calldata
->res
;
5114 calldata
->clp
= clp
;
5115 task_setup_data
.callback_data
= calldata
;
5117 return rpc_run_task(&task_setup_data
);
5120 static int nfs41_proc_async_sequence(struct nfs_client
*clp
, struct rpc_cred
*cred
)
5122 struct rpc_task
*task
;
5125 task
= _nfs41_proc_sequence(clp
, cred
);
5127 ret
= PTR_ERR(task
);
5130 dprintk("<-- %s status=%d\n", __func__
, ret
);
5134 static int nfs4_proc_sequence(struct nfs_client
*clp
, struct rpc_cred
*cred
)
5136 struct rpc_task
*task
;
5139 task
= _nfs41_proc_sequence(clp
, cred
);
5141 ret
= PTR_ERR(task
);
5144 ret
= rpc_wait_for_completion_task(task
);
5146 ret
= task
->tk_status
;
5149 dprintk("<-- %s status=%d\n", __func__
, ret
);
5153 struct nfs4_reclaim_complete_data
{
5154 struct nfs_client
*clp
;
5155 struct nfs41_reclaim_complete_args arg
;
5156 struct nfs41_reclaim_complete_res res
;
5159 static void nfs4_reclaim_complete_prepare(struct rpc_task
*task
, void *data
)
5161 struct nfs4_reclaim_complete_data
*calldata
= data
;
5163 rpc_task_set_priority(task
, RPC_PRIORITY_PRIVILEGED
);
5164 if (nfs41_setup_sequence(calldata
->clp
->cl_session
,
5165 &calldata
->arg
.seq_args
,
5166 &calldata
->res
.seq_res
, 0, task
))
5169 rpc_call_start(task
);
5172 static int nfs41_reclaim_complete_handle_errors(struct rpc_task
*task
, struct nfs_client
*clp
)
5174 switch(task
->tk_status
) {
5176 case -NFS4ERR_COMPLETE_ALREADY
:
5177 case -NFS4ERR_WRONG_CRED
: /* What to do here? */
5179 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;
5243 calldata
->res
.seq_res
.sr_slotid
= NFS4_MAX_SLOT_TABLE
;
5245 msg
.rpc_argp
= &calldata
->arg
;
5246 msg
.rpc_resp
= &calldata
->res
;
5247 task_setup_data
.callback_data
= calldata
;
5248 task
= rpc_run_task(&task_setup_data
);
5250 status
= PTR_ERR(task
);
5256 dprintk("<-- %s status=%d\n", __func__
, status
);
5259 #endif /* CONFIG_NFS_V4_1 */
5261 struct nfs4_state_recovery_ops nfs40_reboot_recovery_ops
= {
5262 .owner_flag_bit
= NFS_OWNER_RECLAIM_REBOOT
,
5263 .state_flag_bit
= NFS_STATE_RECLAIM_REBOOT
,
5264 .recover_open
= nfs4_open_reclaim
,
5265 .recover_lock
= nfs4_lock_reclaim
,
5266 .establish_clid
= nfs4_init_clientid
,
5267 .get_clid_cred
= nfs4_get_setclientid_cred
,
5270 #if defined(CONFIG_NFS_V4_1)
5271 struct nfs4_state_recovery_ops nfs41_reboot_recovery_ops
= {
5272 .owner_flag_bit
= NFS_OWNER_RECLAIM_REBOOT
,
5273 .state_flag_bit
= NFS_STATE_RECLAIM_REBOOT
,
5274 .recover_open
= nfs4_open_reclaim
,
5275 .recover_lock
= nfs4_lock_reclaim
,
5276 .establish_clid
= nfs41_init_clientid
,
5277 .get_clid_cred
= nfs4_get_exchange_id_cred
,
5278 .reclaim_complete
= nfs41_proc_reclaim_complete
,
5280 #endif /* CONFIG_NFS_V4_1 */
5282 struct nfs4_state_recovery_ops nfs40_nograce_recovery_ops
= {
5283 .owner_flag_bit
= NFS_OWNER_RECLAIM_NOGRACE
,
5284 .state_flag_bit
= NFS_STATE_RECLAIM_NOGRACE
,
5285 .recover_open
= nfs4_open_expired
,
5286 .recover_lock
= nfs4_lock_expired
,
5287 .establish_clid
= nfs4_init_clientid
,
5288 .get_clid_cred
= nfs4_get_setclientid_cred
,
5291 #if defined(CONFIG_NFS_V4_1)
5292 struct nfs4_state_recovery_ops nfs41_nograce_recovery_ops
= {
5293 .owner_flag_bit
= NFS_OWNER_RECLAIM_NOGRACE
,
5294 .state_flag_bit
= NFS_STATE_RECLAIM_NOGRACE
,
5295 .recover_open
= nfs4_open_expired
,
5296 .recover_lock
= nfs4_lock_expired
,
5297 .establish_clid
= nfs41_init_clientid
,
5298 .get_clid_cred
= nfs4_get_exchange_id_cred
,
5300 #endif /* CONFIG_NFS_V4_1 */
5302 struct nfs4_state_maintenance_ops nfs40_state_renewal_ops
= {
5303 .sched_state_renewal
= nfs4_proc_async_renew
,
5304 .get_state_renewal_cred_locked
= nfs4_get_renew_cred_locked
,
5305 .renew_lease
= nfs4_proc_renew
,
5308 #if defined(CONFIG_NFS_V4_1)
5309 struct nfs4_state_maintenance_ops nfs41_state_renewal_ops
= {
5310 .sched_state_renewal
= nfs41_proc_async_sequence
,
5311 .get_state_renewal_cred_locked
= nfs4_get_machine_cred_locked
,
5312 .renew_lease
= nfs4_proc_sequence
,
5316 static const struct nfs4_minor_version_ops nfs_v4_0_minor_ops
= {
5318 .call_sync
= _nfs4_call_sync
,
5319 .validate_stateid
= nfs4_validate_delegation_stateid
,
5320 .reboot_recovery_ops
= &nfs40_reboot_recovery_ops
,
5321 .nograce_recovery_ops
= &nfs40_nograce_recovery_ops
,
5322 .state_renewal_ops
= &nfs40_state_renewal_ops
,
5325 #if defined(CONFIG_NFS_V4_1)
5326 static const struct nfs4_minor_version_ops nfs_v4_1_minor_ops
= {
5328 .call_sync
= _nfs4_call_sync_session
,
5329 .validate_stateid
= nfs41_validate_delegation_stateid
,
5330 .reboot_recovery_ops
= &nfs41_reboot_recovery_ops
,
5331 .nograce_recovery_ops
= &nfs41_nograce_recovery_ops
,
5332 .state_renewal_ops
= &nfs41_state_renewal_ops
,
5336 const struct nfs4_minor_version_ops
*nfs_v4_minor_ops
[] = {
5337 [0] = &nfs_v4_0_minor_ops
,
5338 #if defined(CONFIG_NFS_V4_1)
5339 [1] = &nfs_v4_1_minor_ops
,
5343 static const struct inode_operations nfs4_file_inode_operations
= {
5344 .permission
= nfs_permission
,
5345 .getattr
= nfs_getattr
,
5346 .setattr
= nfs_setattr
,
5347 .getxattr
= nfs4_getxattr
,
5348 .setxattr
= nfs4_setxattr
,
5349 .listxattr
= nfs4_listxattr
,
5352 const struct nfs_rpc_ops nfs_v4_clientops
= {
5353 .version
= 4, /* protocol version */
5354 .dentry_ops
= &nfs4_dentry_operations
,
5355 .dir_inode_ops
= &nfs4_dir_inode_operations
,
5356 .file_inode_ops
= &nfs4_file_inode_operations
,
5357 .getroot
= nfs4_proc_get_root
,
5358 .getattr
= nfs4_proc_getattr
,
5359 .setattr
= nfs4_proc_setattr
,
5360 .lookupfh
= nfs4_proc_lookupfh
,
5361 .lookup
= nfs4_proc_lookup
,
5362 .access
= nfs4_proc_access
,
5363 .readlink
= nfs4_proc_readlink
,
5364 .create
= nfs4_proc_create
,
5365 .remove
= nfs4_proc_remove
,
5366 .unlink_setup
= nfs4_proc_unlink_setup
,
5367 .unlink_done
= nfs4_proc_unlink_done
,
5368 .rename
= nfs4_proc_rename
,
5369 .link
= nfs4_proc_link
,
5370 .symlink
= nfs4_proc_symlink
,
5371 .mkdir
= nfs4_proc_mkdir
,
5372 .rmdir
= nfs4_proc_remove
,
5373 .readdir
= nfs4_proc_readdir
,
5374 .mknod
= nfs4_proc_mknod
,
5375 .statfs
= nfs4_proc_statfs
,
5376 .fsinfo
= nfs4_proc_fsinfo
,
5377 .pathconf
= nfs4_proc_pathconf
,
5378 .set_capabilities
= nfs4_server_capabilities
,
5379 .decode_dirent
= nfs4_decode_dirent
,
5380 .read_setup
= nfs4_proc_read_setup
,
5381 .read_done
= nfs4_read_done
,
5382 .write_setup
= nfs4_proc_write_setup
,
5383 .write_done
= nfs4_write_done
,
5384 .commit_setup
= nfs4_proc_commit_setup
,
5385 .commit_done
= nfs4_commit_done
,
5386 .lock
= nfs4_proc_lock
,
5387 .clear_acl_cache
= nfs4_zap_acl_attr
,
5388 .close_context
= nfs4_close_context
,