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/ratelimit.h>
43 #include <linux/printk.h>
44 #include <linux/slab.h>
45 #include <linux/sunrpc/clnt.h>
46 #include <linux/nfs.h>
47 #include <linux/nfs4.h>
48 #include <linux/nfs_fs.h>
49 #include <linux/nfs_page.h>
50 #include <linux/nfs_mount.h>
51 #include <linux/namei.h>
52 #include <linux/mount.h>
53 #include <linux/module.h>
54 #include <linux/nfs_idmap.h>
55 #include <linux/xattr.h>
56 #include <linux/utsname.h>
57 #include <linux/freezer.h>
60 #include "delegation.h"
66 #include "nfs4session.h"
69 #define NFSDBG_FACILITY NFSDBG_PROC
71 #define NFS4_POLL_RETRY_MIN (HZ/10)
72 #define NFS4_POLL_RETRY_MAX (15*HZ)
75 static int _nfs4_proc_open(struct nfs4_opendata
*data
);
76 static int _nfs4_recover_proc_open(struct nfs4_opendata
*data
);
77 static int nfs4_do_fsinfo(struct nfs_server
*, struct nfs_fh
*, struct nfs_fsinfo
*);
78 static int nfs4_async_handle_error(struct rpc_task
*, const struct nfs_server
*, struct nfs4_state
*);
79 static void nfs_fixup_referral_attributes(struct nfs_fattr
*fattr
);
80 static int nfs4_proc_getattr(struct nfs_server
*, struct nfs_fh
*, struct nfs_fattr
*);
81 static int _nfs4_proc_getattr(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fattr
*fattr
);
82 static int nfs4_do_setattr(struct inode
*inode
, struct rpc_cred
*cred
,
83 struct nfs_fattr
*fattr
, struct iattr
*sattr
,
84 struct nfs4_state
*state
);
85 #ifdef CONFIG_NFS_V4_1
86 static int nfs41_test_stateid(struct nfs_server
*, nfs4_stateid
*);
87 static int nfs41_free_stateid(struct nfs_server
*, nfs4_stateid
*);
89 /* Prevent leaks of NFSv4 errors into userland */
90 static int nfs4_map_errors(int err
)
95 case -NFS4ERR_RESOURCE
:
97 case -NFS4ERR_WRONGSEC
:
99 case -NFS4ERR_BADOWNER
:
100 case -NFS4ERR_BADNAME
:
102 case -NFS4ERR_SHARE_DENIED
:
104 case -NFS4ERR_MINOR_VERS_MISMATCH
:
105 return -EPROTONOSUPPORT
;
106 case -NFS4ERR_ACCESS
:
109 dprintk("%s could not handle NFSv4 error %d\n",
117 * This is our standard bitmap for GETATTR requests.
119 const u32 nfs4_fattr_bitmap
[3] = {
121 | FATTR4_WORD0_CHANGE
124 | FATTR4_WORD0_FILEID
,
126 | FATTR4_WORD1_NUMLINKS
128 | FATTR4_WORD1_OWNER_GROUP
129 | FATTR4_WORD1_RAWDEV
130 | FATTR4_WORD1_SPACE_USED
131 | FATTR4_WORD1_TIME_ACCESS
132 | FATTR4_WORD1_TIME_METADATA
133 | FATTR4_WORD1_TIME_MODIFY
136 static const u32 nfs4_pnfs_open_bitmap
[3] = {
138 | FATTR4_WORD0_CHANGE
141 | FATTR4_WORD0_FILEID
,
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_WORD2_MDSTHRESHOLD
154 static const u32 nfs4_open_noattr_bitmap
[3] = {
156 | FATTR4_WORD0_CHANGE
157 | FATTR4_WORD0_FILEID
,
160 const u32 nfs4_statfs_bitmap
[2] = {
161 FATTR4_WORD0_FILES_AVAIL
162 | FATTR4_WORD0_FILES_FREE
163 | FATTR4_WORD0_FILES_TOTAL
,
164 FATTR4_WORD1_SPACE_AVAIL
165 | FATTR4_WORD1_SPACE_FREE
166 | FATTR4_WORD1_SPACE_TOTAL
169 const u32 nfs4_pathconf_bitmap
[2] = {
171 | FATTR4_WORD0_MAXNAME
,
175 const u32 nfs4_fsinfo_bitmap
[3] = { FATTR4_WORD0_MAXFILESIZE
176 | FATTR4_WORD0_MAXREAD
177 | FATTR4_WORD0_MAXWRITE
178 | FATTR4_WORD0_LEASE_TIME
,
179 FATTR4_WORD1_TIME_DELTA
180 | FATTR4_WORD1_FS_LAYOUT_TYPES
,
181 FATTR4_WORD2_LAYOUT_BLKSIZE
184 const u32 nfs4_fs_locations_bitmap
[2] = {
186 | FATTR4_WORD0_CHANGE
189 | FATTR4_WORD0_FILEID
190 | FATTR4_WORD0_FS_LOCATIONS
,
192 | FATTR4_WORD1_NUMLINKS
194 | FATTR4_WORD1_OWNER_GROUP
195 | FATTR4_WORD1_RAWDEV
196 | FATTR4_WORD1_SPACE_USED
197 | FATTR4_WORD1_TIME_ACCESS
198 | FATTR4_WORD1_TIME_METADATA
199 | FATTR4_WORD1_TIME_MODIFY
200 | FATTR4_WORD1_MOUNTED_ON_FILEID
203 static void nfs4_setup_readdir(u64 cookie
, __be32
*verifier
, struct dentry
*dentry
,
204 struct nfs4_readdir_arg
*readdir
)
209 readdir
->cookie
= cookie
;
210 memcpy(&readdir
->verifier
, verifier
, sizeof(readdir
->verifier
));
215 memset(&readdir
->verifier
, 0, sizeof(readdir
->verifier
));
220 * NFSv4 servers do not return entries for '.' and '..'
221 * Therefore, we fake these entries here. We let '.'
222 * have cookie 0 and '..' have cookie 1. Note that
223 * when talking to the server, we always send cookie 0
226 start
= p
= kmap_atomic(*readdir
->pages
);
229 *p
++ = xdr_one
; /* next */
230 *p
++ = xdr_zero
; /* cookie, first word */
231 *p
++ = xdr_one
; /* cookie, second word */
232 *p
++ = xdr_one
; /* entry len */
233 memcpy(p
, ".\0\0\0", 4); /* entry */
235 *p
++ = xdr_one
; /* bitmap length */
236 *p
++ = htonl(FATTR4_WORD0_FILEID
); /* bitmap */
237 *p
++ = htonl(8); /* attribute buffer length */
238 p
= xdr_encode_hyper(p
, NFS_FILEID(dentry
->d_inode
));
241 *p
++ = xdr_one
; /* next */
242 *p
++ = xdr_zero
; /* cookie, first word */
243 *p
++ = xdr_two
; /* cookie, second word */
244 *p
++ = xdr_two
; /* entry len */
245 memcpy(p
, "..\0\0", 4); /* entry */
247 *p
++ = xdr_one
; /* bitmap length */
248 *p
++ = htonl(FATTR4_WORD0_FILEID
); /* bitmap */
249 *p
++ = htonl(8); /* attribute buffer length */
250 p
= xdr_encode_hyper(p
, NFS_FILEID(dentry
->d_parent
->d_inode
));
252 readdir
->pgbase
= (char *)p
- (char *)start
;
253 readdir
->count
-= readdir
->pgbase
;
254 kunmap_atomic(start
);
257 static int nfs4_delay(struct rpc_clnt
*clnt
, long *timeout
)
264 *timeout
= NFS4_POLL_RETRY_MIN
;
265 if (*timeout
> NFS4_POLL_RETRY_MAX
)
266 *timeout
= NFS4_POLL_RETRY_MAX
;
267 freezable_schedule_timeout_killable(*timeout
);
268 if (fatal_signal_pending(current
))
274 /* This is the error handling routine for processes that are allowed
277 static int nfs4_handle_exception(struct nfs_server
*server
, int errorcode
, struct nfs4_exception
*exception
)
279 struct nfs_client
*clp
= server
->nfs_client
;
280 struct nfs4_state
*state
= exception
->state
;
281 struct inode
*inode
= exception
->inode
;
284 exception
->retry
= 0;
288 case -NFS4ERR_OPENMODE
:
289 if (inode
&& nfs4_have_delegation(inode
, FMODE_READ
)) {
290 nfs4_inode_return_delegation(inode
);
291 exception
->retry
= 1;
296 nfs4_schedule_stateid_recovery(server
, state
);
297 goto wait_on_recovery
;
298 case -NFS4ERR_DELEG_REVOKED
:
299 case -NFS4ERR_ADMIN_REVOKED
:
300 case -NFS4ERR_BAD_STATEID
:
303 nfs_remove_bad_delegation(state
->inode
);
304 nfs4_schedule_stateid_recovery(server
, state
);
305 goto wait_on_recovery
;
306 case -NFS4ERR_EXPIRED
:
308 nfs4_schedule_stateid_recovery(server
, state
);
309 case -NFS4ERR_STALE_STATEID
:
310 case -NFS4ERR_STALE_CLIENTID
:
311 nfs4_schedule_lease_recovery(clp
);
312 goto wait_on_recovery
;
313 #if defined(CONFIG_NFS_V4_1)
314 case -NFS4ERR_BADSESSION
:
315 case -NFS4ERR_BADSLOT
:
316 case -NFS4ERR_BAD_HIGH_SLOT
:
317 case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION
:
318 case -NFS4ERR_DEADSESSION
:
319 case -NFS4ERR_SEQ_FALSE_RETRY
:
320 case -NFS4ERR_SEQ_MISORDERED
:
321 dprintk("%s ERROR: %d Reset session\n", __func__
,
323 nfs4_schedule_session_recovery(clp
->cl_session
, errorcode
);
324 goto wait_on_recovery
;
325 #endif /* defined(CONFIG_NFS_V4_1) */
326 case -NFS4ERR_FILE_OPEN
:
327 if (exception
->timeout
> HZ
) {
328 /* We have retried a decent amount, time to
336 ret
= nfs4_delay(server
->client
, &exception
->timeout
);
339 case -NFS4ERR_RETRY_UNCACHED_REP
:
340 case -NFS4ERR_OLD_STATEID
:
341 exception
->retry
= 1;
343 case -NFS4ERR_BADOWNER
:
344 /* The following works around a Linux server bug! */
345 case -NFS4ERR_BADNAME
:
346 if (server
->caps
& NFS_CAP_UIDGID_NOMAP
) {
347 server
->caps
&= ~NFS_CAP_UIDGID_NOMAP
;
348 exception
->retry
= 1;
349 printk(KERN_WARNING
"NFS: v4 server %s "
350 "does not accept raw "
352 "Reenabling the idmapper.\n",
353 server
->nfs_client
->cl_hostname
);
356 /* We failed to handle the error */
357 return nfs4_map_errors(ret
);
359 ret
= nfs4_wait_clnt_recover(clp
);
361 exception
->retry
= 1;
366 static void do_renew_lease(struct nfs_client
*clp
, unsigned long timestamp
)
368 spin_lock(&clp
->cl_lock
);
369 if (time_before(clp
->cl_last_renewal
,timestamp
))
370 clp
->cl_last_renewal
= timestamp
;
371 spin_unlock(&clp
->cl_lock
);
374 static void renew_lease(const struct nfs_server
*server
, unsigned long timestamp
)
376 do_renew_lease(server
->nfs_client
, timestamp
);
379 #if defined(CONFIG_NFS_V4_1)
381 static void nfs41_sequence_free_slot(struct nfs4_sequence_res
*res
)
383 struct nfs4_session
*session
;
384 struct nfs4_slot_table
*tbl
;
385 bool send_new_highest_used_slotid
= false;
388 /* just wake up the next guy waiting since
389 * we may have not consumed a slot after all */
390 dprintk("%s: No slot\n", __func__
);
393 tbl
= res
->sr_slot
->table
;
394 session
= tbl
->session
;
396 spin_lock(&tbl
->slot_tbl_lock
);
397 /* Be nice to the server: try to ensure that the last transmitted
398 * value for highest_user_slotid <= target_highest_slotid
400 if (tbl
->highest_used_slotid
> tbl
->target_highest_slotid
)
401 send_new_highest_used_slotid
= true;
403 if (nfs41_wake_and_assign_slot(tbl
, res
->sr_slot
)) {
404 send_new_highest_used_slotid
= false;
407 nfs4_free_slot(tbl
, res
->sr_slot
);
409 if (tbl
->highest_used_slotid
!= NFS4_NO_SLOT
)
410 send_new_highest_used_slotid
= false;
412 spin_unlock(&tbl
->slot_tbl_lock
);
414 if (send_new_highest_used_slotid
)
415 nfs41_server_notify_highest_slotid_update(session
->clp
);
418 static int nfs41_sequence_done(struct rpc_task
*task
, struct nfs4_sequence_res
*res
)
420 struct nfs4_session
*session
;
421 struct nfs4_slot
*slot
;
422 struct nfs_client
*clp
;
423 bool interrupted
= false;
426 /* don't increment the sequence number if the task wasn't sent */
427 if (!RPC_WAS_SENT(task
))
431 session
= slot
->table
->session
;
433 if (slot
->interrupted
) {
434 slot
->interrupted
= 0;
438 /* Check the SEQUENCE operation status */
439 switch (res
->sr_status
) {
441 /* Update the slot's sequence and clientid lease timer */
444 do_renew_lease(clp
, res
->sr_timestamp
);
445 /* Check sequence flags */
446 if (res
->sr_status_flags
!= 0)
447 nfs4_schedule_lease_recovery(clp
);
448 nfs41_update_target_slotid(slot
->table
, slot
, res
);
452 * sr_status remains 1 if an RPC level error occurred.
453 * The server may or may not have processed the sequence
455 * Mark the slot as having hosted an interrupted RPC call.
457 slot
->interrupted
= 1;
460 /* The server detected a resend of the RPC call and
461 * returned NFS4ERR_DELAY as per Section 2.10.6.2
464 dprintk("%s: slot=%u seq=%u: Operation in progress\n",
469 case -NFS4ERR_BADSLOT
:
471 * The slot id we used was probably retired. Try again
472 * using a different slot id.
475 case -NFS4ERR_SEQ_MISORDERED
:
477 * Was the last operation on this sequence interrupted?
478 * If so, retry after bumping the sequence number.
485 * Could this slot have been previously retired?
486 * If so, then the server may be expecting seq_nr = 1!
488 if (slot
->seq_nr
!= 1) {
493 case -NFS4ERR_SEQ_FALSE_RETRY
:
497 /* Just update the slot sequence no. */
501 /* The session may be reset by one of the error handlers. */
502 dprintk("%s: Error %d free the slot \n", __func__
, res
->sr_status
);
503 nfs41_sequence_free_slot(res
);
506 if (rpc_restart_call_prepare(task
)) {
512 if (!rpc_restart_call(task
))
514 rpc_delay(task
, NFS4_POLL_RETRY_MAX
);
518 static int nfs4_sequence_done(struct rpc_task
*task
,
519 struct nfs4_sequence_res
*res
)
521 if (res
->sr_slot
== NULL
)
523 return nfs41_sequence_done(task
, res
);
526 static void nfs41_init_sequence(struct nfs4_sequence_args
*args
,
527 struct nfs4_sequence_res
*res
, int cache_reply
)
529 args
->sa_slot
= NULL
;
530 args
->sa_cache_this
= 0;
531 args
->sa_privileged
= 0;
533 args
->sa_cache_this
= 1;
537 static void nfs4_set_sequence_privileged(struct nfs4_sequence_args
*args
)
539 args
->sa_privileged
= 1;
542 int nfs41_setup_sequence(struct nfs4_session
*session
,
543 struct nfs4_sequence_args
*args
,
544 struct nfs4_sequence_res
*res
,
545 struct rpc_task
*task
)
547 struct nfs4_slot
*slot
;
548 struct nfs4_slot_table
*tbl
;
550 dprintk("--> %s\n", __func__
);
551 /* slot already allocated? */
552 if (res
->sr_slot
!= NULL
)
555 tbl
= &session
->fc_slot_table
;
557 task
->tk_timeout
= 0;
559 spin_lock(&tbl
->slot_tbl_lock
);
560 if (test_bit(NFS4_SESSION_DRAINING
, &session
->session_state
) &&
561 !args
->sa_privileged
) {
562 /* The state manager will wait until the slot table is empty */
563 dprintk("%s session is draining\n", __func__
);
567 slot
= nfs4_alloc_slot(tbl
);
569 /* If out of memory, try again in 1/4 second */
570 if (slot
== ERR_PTR(-ENOMEM
))
571 task
->tk_timeout
= HZ
>> 2;
572 dprintk("<-- %s: no free slots\n", __func__
);
575 spin_unlock(&tbl
->slot_tbl_lock
);
577 args
->sa_slot
= slot
;
579 dprintk("<-- %s slotid=%d seqid=%d\n", __func__
,
580 slot
->slot_nr
, slot
->seq_nr
);
583 res
->sr_timestamp
= jiffies
;
584 res
->sr_status_flags
= 0;
586 * sr_status is only set in decode_sequence, and so will remain
587 * set to 1 if an rpc level failure occurs.
591 rpc_call_start(task
);
594 /* Privileged tasks are queued with top priority */
595 if (args
->sa_privileged
)
596 rpc_sleep_on_priority(&tbl
->slot_tbl_waitq
, task
,
597 NULL
, RPC_PRIORITY_PRIVILEGED
);
599 rpc_sleep_on(&tbl
->slot_tbl_waitq
, task
, NULL
);
600 spin_unlock(&tbl
->slot_tbl_lock
);
603 EXPORT_SYMBOL_GPL(nfs41_setup_sequence
);
605 int nfs4_setup_sequence(const struct nfs_server
*server
,
606 struct nfs4_sequence_args
*args
,
607 struct nfs4_sequence_res
*res
,
608 struct rpc_task
*task
)
610 struct nfs4_session
*session
= nfs4_get_session(server
);
613 if (session
== NULL
) {
614 rpc_call_start(task
);
618 dprintk("--> %s clp %p session %p sr_slot %d\n",
619 __func__
, session
->clp
, session
, res
->sr_slot
?
620 res
->sr_slot
->slot_nr
: -1);
622 ret
= nfs41_setup_sequence(session
, args
, res
, task
);
624 dprintk("<-- %s status=%d\n", __func__
, ret
);
628 struct nfs41_call_sync_data
{
629 const struct nfs_server
*seq_server
;
630 struct nfs4_sequence_args
*seq_args
;
631 struct nfs4_sequence_res
*seq_res
;
634 static void nfs41_call_sync_prepare(struct rpc_task
*task
, void *calldata
)
636 struct nfs41_call_sync_data
*data
= calldata
;
637 struct nfs4_session
*session
= nfs4_get_session(data
->seq_server
);
639 dprintk("--> %s data->seq_server %p\n", __func__
, data
->seq_server
);
641 nfs41_setup_sequence(session
, data
->seq_args
, data
->seq_res
, task
);
644 static void nfs41_call_sync_done(struct rpc_task
*task
, void *calldata
)
646 struct nfs41_call_sync_data
*data
= calldata
;
648 nfs41_sequence_done(task
, data
->seq_res
);
651 static const struct rpc_call_ops nfs41_call_sync_ops
= {
652 .rpc_call_prepare
= nfs41_call_sync_prepare
,
653 .rpc_call_done
= nfs41_call_sync_done
,
656 static int nfs4_call_sync_sequence(struct rpc_clnt
*clnt
,
657 struct nfs_server
*server
,
658 struct rpc_message
*msg
,
659 struct nfs4_sequence_args
*args
,
660 struct nfs4_sequence_res
*res
)
663 struct rpc_task
*task
;
664 struct nfs41_call_sync_data data
= {
665 .seq_server
= server
,
669 struct rpc_task_setup task_setup
= {
672 .callback_ops
= &nfs41_call_sync_ops
,
673 .callback_data
= &data
676 task
= rpc_run_task(&task_setup
);
680 ret
= task
->tk_status
;
688 void nfs41_init_sequence(struct nfs4_sequence_args
*args
,
689 struct nfs4_sequence_res
*res
, int cache_reply
)
693 static void nfs4_set_sequence_privileged(struct nfs4_sequence_args
*args
)
698 static int nfs4_sequence_done(struct rpc_task
*task
,
699 struct nfs4_sequence_res
*res
)
703 #endif /* CONFIG_NFS_V4_1 */
706 int _nfs4_call_sync(struct rpc_clnt
*clnt
,
707 struct nfs_server
*server
,
708 struct rpc_message
*msg
,
709 struct nfs4_sequence_args
*args
,
710 struct nfs4_sequence_res
*res
)
712 return rpc_call_sync(clnt
, msg
, 0);
716 int nfs4_call_sync(struct rpc_clnt
*clnt
,
717 struct nfs_server
*server
,
718 struct rpc_message
*msg
,
719 struct nfs4_sequence_args
*args
,
720 struct nfs4_sequence_res
*res
,
723 nfs41_init_sequence(args
, res
, cache_reply
);
724 return server
->nfs_client
->cl_mvops
->call_sync(clnt
, server
, msg
,
728 static void update_changeattr(struct inode
*dir
, struct nfs4_change_info
*cinfo
)
730 struct nfs_inode
*nfsi
= NFS_I(dir
);
732 spin_lock(&dir
->i_lock
);
733 nfsi
->cache_validity
|= NFS_INO_INVALID_ATTR
|NFS_INO_INVALID_DATA
;
734 if (!cinfo
->atomic
|| cinfo
->before
!= dir
->i_version
)
735 nfs_force_lookup_revalidate(dir
);
736 dir
->i_version
= cinfo
->after
;
737 nfs_fscache_invalidate(dir
);
738 spin_unlock(&dir
->i_lock
);
741 struct nfs4_opendata
{
743 struct nfs_openargs o_arg
;
744 struct nfs_openres o_res
;
745 struct nfs_open_confirmargs c_arg
;
746 struct nfs_open_confirmres c_res
;
747 struct nfs4_string owner_name
;
748 struct nfs4_string group_name
;
749 struct nfs_fattr f_attr
;
751 struct dentry
*dentry
;
752 struct nfs4_state_owner
*owner
;
753 struct nfs4_state
*state
;
755 unsigned long timestamp
;
756 unsigned int rpc_done
: 1;
762 static void nfs4_init_opendata_res(struct nfs4_opendata
*p
)
764 p
->o_res
.f_attr
= &p
->f_attr
;
765 p
->o_res
.seqid
= p
->o_arg
.seqid
;
766 p
->c_res
.seqid
= p
->c_arg
.seqid
;
767 p
->o_res
.server
= p
->o_arg
.server
;
768 p
->o_res
.access_request
= p
->o_arg
.access
;
769 nfs_fattr_init(&p
->f_attr
);
770 nfs_fattr_init_names(&p
->f_attr
, &p
->owner_name
, &p
->group_name
);
773 static struct nfs4_opendata
*nfs4_opendata_alloc(struct dentry
*dentry
,
774 struct nfs4_state_owner
*sp
, fmode_t fmode
, int flags
,
775 const struct iattr
*attrs
,
778 struct dentry
*parent
= dget_parent(dentry
);
779 struct inode
*dir
= parent
->d_inode
;
780 struct nfs_server
*server
= NFS_SERVER(dir
);
781 struct nfs4_opendata
*p
;
783 p
= kzalloc(sizeof(*p
), gfp_mask
);
786 p
->o_arg
.seqid
= nfs_alloc_seqid(&sp
->so_seqid
, gfp_mask
);
787 if (p
->o_arg
.seqid
== NULL
)
789 nfs_sb_active(dentry
->d_sb
);
790 p
->dentry
= dget(dentry
);
793 atomic_inc(&sp
->so_count
);
794 p
->o_arg
.fh
= NFS_FH(dir
);
795 p
->o_arg
.open_flags
= flags
;
796 p
->o_arg
.fmode
= fmode
& (FMODE_READ
|FMODE_WRITE
);
797 /* don't put an ACCESS op in OPEN compound if O_EXCL, because ACCESS
798 * will return permission denied for all bits until close */
799 if (!(flags
& O_EXCL
)) {
800 /* ask server to check for all possible rights as results
802 p
->o_arg
.access
= NFS4_ACCESS_READ
| NFS4_ACCESS_MODIFY
|
803 NFS4_ACCESS_EXTEND
| NFS4_ACCESS_EXECUTE
;
805 p
->o_arg
.clientid
= server
->nfs_client
->cl_clientid
;
806 p
->o_arg
.id
.create_time
= ktime_to_ns(sp
->so_seqid
.create_time
);
807 p
->o_arg
.id
.uniquifier
= sp
->so_seqid
.owner_id
;
808 p
->o_arg
.name
= &dentry
->d_name
;
809 p
->o_arg
.server
= server
;
810 p
->o_arg
.bitmask
= server
->attr_bitmask
;
811 p
->o_arg
.open_bitmap
= &nfs4_fattr_bitmap
[0];
812 p
->o_arg
.claim
= NFS4_OPEN_CLAIM_NULL
;
813 if (attrs
!= NULL
&& attrs
->ia_valid
!= 0) {
816 p
->o_arg
.u
.attrs
= &p
->attrs
;
817 memcpy(&p
->attrs
, attrs
, sizeof(p
->attrs
));
820 verf
[1] = current
->pid
;
821 memcpy(p
->o_arg
.u
.verifier
.data
, verf
,
822 sizeof(p
->o_arg
.u
.verifier
.data
));
824 p
->c_arg
.fh
= &p
->o_res
.fh
;
825 p
->c_arg
.stateid
= &p
->o_res
.stateid
;
826 p
->c_arg
.seqid
= p
->o_arg
.seqid
;
827 nfs4_init_opendata_res(p
);
837 static void nfs4_opendata_free(struct kref
*kref
)
839 struct nfs4_opendata
*p
= container_of(kref
,
840 struct nfs4_opendata
, kref
);
841 struct super_block
*sb
= p
->dentry
->d_sb
;
843 nfs_free_seqid(p
->o_arg
.seqid
);
844 if (p
->state
!= NULL
)
845 nfs4_put_open_state(p
->state
);
846 nfs4_put_state_owner(p
->owner
);
850 nfs_fattr_free_names(&p
->f_attr
);
854 static void nfs4_opendata_put(struct nfs4_opendata
*p
)
857 kref_put(&p
->kref
, nfs4_opendata_free
);
860 static int nfs4_wait_for_completion_rpc_task(struct rpc_task
*task
)
864 ret
= rpc_wait_for_completion_task(task
);
868 static int can_open_cached(struct nfs4_state
*state
, fmode_t mode
, int open_mode
)
872 if (open_mode
& (O_EXCL
|O_TRUNC
))
874 switch (mode
& (FMODE_READ
|FMODE_WRITE
)) {
876 ret
|= test_bit(NFS_O_RDONLY_STATE
, &state
->flags
) != 0
877 && state
->n_rdonly
!= 0;
880 ret
|= test_bit(NFS_O_WRONLY_STATE
, &state
->flags
) != 0
881 && state
->n_wronly
!= 0;
883 case FMODE_READ
|FMODE_WRITE
:
884 ret
|= test_bit(NFS_O_RDWR_STATE
, &state
->flags
) != 0
885 && state
->n_rdwr
!= 0;
891 static int can_open_delegated(struct nfs_delegation
*delegation
, fmode_t fmode
)
893 if (delegation
== NULL
)
895 if ((delegation
->type
& fmode
) != fmode
)
897 if (test_bit(NFS_DELEGATION_NEED_RECLAIM
, &delegation
->flags
))
899 if (test_bit(NFS_DELEGATION_RETURNING
, &delegation
->flags
))
901 nfs_mark_delegation_referenced(delegation
);
905 static void update_open_stateflags(struct nfs4_state
*state
, fmode_t fmode
)
914 case FMODE_READ
|FMODE_WRITE
:
917 nfs4_state_set_mode_locked(state
, state
->state
| fmode
);
920 static void nfs_set_open_stateid_locked(struct nfs4_state
*state
, nfs4_stateid
*stateid
, fmode_t fmode
)
922 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) == 0)
923 nfs4_stateid_copy(&state
->stateid
, stateid
);
924 nfs4_stateid_copy(&state
->open_stateid
, stateid
);
927 set_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
930 set_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
932 case FMODE_READ
|FMODE_WRITE
:
933 set_bit(NFS_O_RDWR_STATE
, &state
->flags
);
937 static void nfs_set_open_stateid(struct nfs4_state
*state
, nfs4_stateid
*stateid
, fmode_t fmode
)
939 write_seqlock(&state
->seqlock
);
940 nfs_set_open_stateid_locked(state
, stateid
, fmode
);
941 write_sequnlock(&state
->seqlock
);
944 static void __update_open_stateid(struct nfs4_state
*state
, nfs4_stateid
*open_stateid
, const nfs4_stateid
*deleg_stateid
, fmode_t fmode
)
947 * Protect the call to nfs4_state_set_mode_locked and
948 * serialise the stateid update
950 write_seqlock(&state
->seqlock
);
951 if (deleg_stateid
!= NULL
) {
952 nfs4_stateid_copy(&state
->stateid
, deleg_stateid
);
953 set_bit(NFS_DELEGATED_STATE
, &state
->flags
);
955 if (open_stateid
!= NULL
)
956 nfs_set_open_stateid_locked(state
, open_stateid
, fmode
);
957 write_sequnlock(&state
->seqlock
);
958 spin_lock(&state
->owner
->so_lock
);
959 update_open_stateflags(state
, fmode
);
960 spin_unlock(&state
->owner
->so_lock
);
963 static int update_open_stateid(struct nfs4_state
*state
, nfs4_stateid
*open_stateid
, nfs4_stateid
*delegation
, fmode_t fmode
)
965 struct nfs_inode
*nfsi
= NFS_I(state
->inode
);
966 struct nfs_delegation
*deleg_cur
;
969 fmode
&= (FMODE_READ
|FMODE_WRITE
);
972 deleg_cur
= rcu_dereference(nfsi
->delegation
);
973 if (deleg_cur
== NULL
)
976 spin_lock(&deleg_cur
->lock
);
977 if (nfsi
->delegation
!= deleg_cur
||
978 test_bit(NFS_DELEGATION_RETURNING
, &deleg_cur
->flags
) ||
979 (deleg_cur
->type
& fmode
) != fmode
)
980 goto no_delegation_unlock
;
982 if (delegation
== NULL
)
983 delegation
= &deleg_cur
->stateid
;
984 else if (!nfs4_stateid_match(&deleg_cur
->stateid
, delegation
))
985 goto no_delegation_unlock
;
987 nfs_mark_delegation_referenced(deleg_cur
);
988 __update_open_stateid(state
, open_stateid
, &deleg_cur
->stateid
, fmode
);
990 no_delegation_unlock
:
991 spin_unlock(&deleg_cur
->lock
);
995 if (!ret
&& open_stateid
!= NULL
) {
996 __update_open_stateid(state
, open_stateid
, NULL
, fmode
);
1004 static void nfs4_return_incompatible_delegation(struct inode
*inode
, fmode_t fmode
)
1006 struct nfs_delegation
*delegation
;
1009 delegation
= rcu_dereference(NFS_I(inode
)->delegation
);
1010 if (delegation
== NULL
|| (delegation
->type
& fmode
) == fmode
) {
1015 nfs4_inode_return_delegation(inode
);
1018 static struct nfs4_state
*nfs4_try_open_cached(struct nfs4_opendata
*opendata
)
1020 struct nfs4_state
*state
= opendata
->state
;
1021 struct nfs_inode
*nfsi
= NFS_I(state
->inode
);
1022 struct nfs_delegation
*delegation
;
1023 int open_mode
= opendata
->o_arg
.open_flags
& (O_EXCL
|O_TRUNC
);
1024 fmode_t fmode
= opendata
->o_arg
.fmode
;
1025 nfs4_stateid stateid
;
1029 if (can_open_cached(state
, fmode
, open_mode
)) {
1030 spin_lock(&state
->owner
->so_lock
);
1031 if (can_open_cached(state
, fmode
, open_mode
)) {
1032 update_open_stateflags(state
, fmode
);
1033 spin_unlock(&state
->owner
->so_lock
);
1034 goto out_return_state
;
1036 spin_unlock(&state
->owner
->so_lock
);
1039 delegation
= rcu_dereference(nfsi
->delegation
);
1040 if (!can_open_delegated(delegation
, fmode
)) {
1044 /* Save the delegation */
1045 nfs4_stateid_copy(&stateid
, &delegation
->stateid
);
1047 ret
= nfs_may_open(state
->inode
, state
->owner
->so_cred
, open_mode
);
1052 /* Try to update the stateid using the delegation */
1053 if (update_open_stateid(state
, NULL
, &stateid
, fmode
))
1054 goto out_return_state
;
1057 return ERR_PTR(ret
);
1059 atomic_inc(&state
->count
);
1064 nfs4_opendata_check_deleg(struct nfs4_opendata
*data
, struct nfs4_state
*state
)
1066 struct nfs_client
*clp
= NFS_SERVER(state
->inode
)->nfs_client
;
1067 struct nfs_delegation
*delegation
;
1068 int delegation_flags
= 0;
1071 delegation
= rcu_dereference(NFS_I(state
->inode
)->delegation
);
1073 delegation_flags
= delegation
->flags
;
1075 if (data
->o_arg
.claim
== NFS4_OPEN_CLAIM_DELEGATE_CUR
) {
1076 pr_err_ratelimited("NFS: Broken NFSv4 server %s is "
1077 "returning a delegation for "
1078 "OPEN(CLAIM_DELEGATE_CUR)\n",
1080 } else if ((delegation_flags
& 1UL<<NFS_DELEGATION_NEED_RECLAIM
) == 0)
1081 nfs_inode_set_delegation(state
->inode
,
1082 data
->owner
->so_cred
,
1085 nfs_inode_reclaim_delegation(state
->inode
,
1086 data
->owner
->so_cred
,
1091 * Check the inode attributes against the CLAIM_PREVIOUS returned attributes
1092 * and update the nfs4_state.
1094 static struct nfs4_state
*
1095 _nfs4_opendata_reclaim_to_nfs4_state(struct nfs4_opendata
*data
)
1097 struct inode
*inode
= data
->state
->inode
;
1098 struct nfs4_state
*state
= data
->state
;
1101 if (!data
->rpc_done
) {
1102 ret
= data
->rpc_status
;
1107 if (!(data
->f_attr
.valid
& NFS_ATTR_FATTR_TYPE
) ||
1108 !(data
->f_attr
.valid
& NFS_ATTR_FATTR_FILEID
) ||
1109 !(data
->f_attr
.valid
& NFS_ATTR_FATTR_CHANGE
))
1113 state
= nfs4_get_open_state(inode
, data
->owner
);
1117 ret
= nfs_refresh_inode(inode
, &data
->f_attr
);
1121 if (data
->o_res
.delegation_type
!= 0)
1122 nfs4_opendata_check_deleg(data
, state
);
1123 update_open_stateid(state
, &data
->o_res
.stateid
, NULL
,
1128 return ERR_PTR(ret
);
1132 static struct nfs4_state
*
1133 _nfs4_opendata_to_nfs4_state(struct nfs4_opendata
*data
)
1135 struct inode
*inode
;
1136 struct nfs4_state
*state
= NULL
;
1139 if (!data
->rpc_done
) {
1140 state
= nfs4_try_open_cached(data
);
1145 if (!(data
->f_attr
.valid
& NFS_ATTR_FATTR
))
1147 inode
= nfs_fhget(data
->dir
->d_sb
, &data
->o_res
.fh
, &data
->f_attr
);
1148 ret
= PTR_ERR(inode
);
1152 state
= nfs4_get_open_state(inode
, data
->owner
);
1155 if (data
->o_res
.delegation_type
!= 0)
1156 nfs4_opendata_check_deleg(data
, state
);
1157 update_open_stateid(state
, &data
->o_res
.stateid
, NULL
,
1161 nfs_release_seqid(data
->o_arg
.seqid
);
1166 return ERR_PTR(ret
);
1169 static struct nfs4_state
*
1170 nfs4_opendata_to_nfs4_state(struct nfs4_opendata
*data
)
1172 if (data
->o_arg
.claim
== NFS4_OPEN_CLAIM_PREVIOUS
)
1173 return _nfs4_opendata_reclaim_to_nfs4_state(data
);
1174 return _nfs4_opendata_to_nfs4_state(data
);
1177 static struct nfs_open_context
*nfs4_state_find_open_context(struct nfs4_state
*state
)
1179 struct nfs_inode
*nfsi
= NFS_I(state
->inode
);
1180 struct nfs_open_context
*ctx
;
1182 spin_lock(&state
->inode
->i_lock
);
1183 list_for_each_entry(ctx
, &nfsi
->open_files
, list
) {
1184 if (ctx
->state
!= state
)
1186 get_nfs_open_context(ctx
);
1187 spin_unlock(&state
->inode
->i_lock
);
1190 spin_unlock(&state
->inode
->i_lock
);
1191 return ERR_PTR(-ENOENT
);
1194 static struct nfs4_opendata
*nfs4_open_recoverdata_alloc(struct nfs_open_context
*ctx
, struct nfs4_state
*state
)
1196 struct nfs4_opendata
*opendata
;
1198 opendata
= nfs4_opendata_alloc(ctx
->dentry
, state
->owner
, 0, 0, NULL
, GFP_NOFS
);
1199 if (opendata
== NULL
)
1200 return ERR_PTR(-ENOMEM
);
1201 opendata
->state
= state
;
1202 atomic_inc(&state
->count
);
1206 static int nfs4_open_recover_helper(struct nfs4_opendata
*opendata
, fmode_t fmode
, struct nfs4_state
**res
)
1208 struct nfs4_state
*newstate
;
1211 opendata
->o_arg
.open_flags
= 0;
1212 opendata
->o_arg
.fmode
= fmode
;
1213 memset(&opendata
->o_res
, 0, sizeof(opendata
->o_res
));
1214 memset(&opendata
->c_res
, 0, sizeof(opendata
->c_res
));
1215 nfs4_init_opendata_res(opendata
);
1216 ret
= _nfs4_recover_proc_open(opendata
);
1219 newstate
= nfs4_opendata_to_nfs4_state(opendata
);
1220 if (IS_ERR(newstate
))
1221 return PTR_ERR(newstate
);
1222 nfs4_close_state(newstate
, fmode
);
1227 static int nfs4_open_recover(struct nfs4_opendata
*opendata
, struct nfs4_state
*state
)
1229 struct nfs4_state
*newstate
;
1232 /* memory barrier prior to reading state->n_* */
1233 clear_bit(NFS_DELEGATED_STATE
, &state
->flags
);
1235 if (state
->n_rdwr
!= 0) {
1236 clear_bit(NFS_O_RDWR_STATE
, &state
->flags
);
1237 ret
= nfs4_open_recover_helper(opendata
, FMODE_READ
|FMODE_WRITE
, &newstate
);
1240 if (newstate
!= state
)
1243 if (state
->n_wronly
!= 0) {
1244 clear_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
1245 ret
= nfs4_open_recover_helper(opendata
, FMODE_WRITE
, &newstate
);
1248 if (newstate
!= state
)
1251 if (state
->n_rdonly
!= 0) {
1252 clear_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
1253 ret
= nfs4_open_recover_helper(opendata
, FMODE_READ
, &newstate
);
1256 if (newstate
!= state
)
1260 * We may have performed cached opens for all three recoveries.
1261 * Check if we need to update the current stateid.
1263 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) == 0 &&
1264 !nfs4_stateid_match(&state
->stateid
, &state
->open_stateid
)) {
1265 write_seqlock(&state
->seqlock
);
1266 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) == 0)
1267 nfs4_stateid_copy(&state
->stateid
, &state
->open_stateid
);
1268 write_sequnlock(&state
->seqlock
);
1275 * reclaim state on the server after a reboot.
1277 static int _nfs4_do_open_reclaim(struct nfs_open_context
*ctx
, struct nfs4_state
*state
)
1279 struct nfs_delegation
*delegation
;
1280 struct nfs4_opendata
*opendata
;
1281 fmode_t delegation_type
= 0;
1284 opendata
= nfs4_open_recoverdata_alloc(ctx
, state
);
1285 if (IS_ERR(opendata
))
1286 return PTR_ERR(opendata
);
1287 opendata
->o_arg
.claim
= NFS4_OPEN_CLAIM_PREVIOUS
;
1288 opendata
->o_arg
.fh
= NFS_FH(state
->inode
);
1290 delegation
= rcu_dereference(NFS_I(state
->inode
)->delegation
);
1291 if (delegation
!= NULL
&& test_bit(NFS_DELEGATION_NEED_RECLAIM
, &delegation
->flags
) != 0)
1292 delegation_type
= delegation
->type
;
1294 opendata
->o_arg
.u
.delegation_type
= delegation_type
;
1295 status
= nfs4_open_recover(opendata
, state
);
1296 nfs4_opendata_put(opendata
);
1300 static int nfs4_do_open_reclaim(struct nfs_open_context
*ctx
, struct nfs4_state
*state
)
1302 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
1303 struct nfs4_exception exception
= { };
1306 err
= _nfs4_do_open_reclaim(ctx
, state
);
1307 if (err
!= -NFS4ERR_DELAY
)
1309 nfs4_handle_exception(server
, err
, &exception
);
1310 } while (exception
.retry
);
1314 static int nfs4_open_reclaim(struct nfs4_state_owner
*sp
, struct nfs4_state
*state
)
1316 struct nfs_open_context
*ctx
;
1319 ctx
= nfs4_state_find_open_context(state
);
1321 return PTR_ERR(ctx
);
1322 ret
= nfs4_do_open_reclaim(ctx
, state
);
1323 put_nfs_open_context(ctx
);
1327 static int _nfs4_open_delegation_recall(struct nfs_open_context
*ctx
, struct nfs4_state
*state
, const nfs4_stateid
*stateid
)
1329 struct nfs4_opendata
*opendata
;
1332 opendata
= nfs4_open_recoverdata_alloc(ctx
, state
);
1333 if (IS_ERR(opendata
))
1334 return PTR_ERR(opendata
);
1335 opendata
->o_arg
.claim
= NFS4_OPEN_CLAIM_DELEGATE_CUR
;
1336 nfs4_stateid_copy(&opendata
->o_arg
.u
.delegation
, stateid
);
1337 ret
= nfs4_open_recover(opendata
, state
);
1338 nfs4_opendata_put(opendata
);
1342 int nfs4_open_delegation_recall(struct nfs_open_context
*ctx
, struct nfs4_state
*state
, const nfs4_stateid
*stateid
)
1344 struct nfs4_exception exception
= { };
1345 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
1348 err
= _nfs4_open_delegation_recall(ctx
, state
, stateid
);
1354 case -NFS4ERR_BADSESSION
:
1355 case -NFS4ERR_BADSLOT
:
1356 case -NFS4ERR_BAD_HIGH_SLOT
:
1357 case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION
:
1358 case -NFS4ERR_DEADSESSION
:
1359 set_bit(NFS_DELEGATED_STATE
, &state
->flags
);
1360 nfs4_schedule_session_recovery(server
->nfs_client
->cl_session
, err
);
1363 case -NFS4ERR_STALE_CLIENTID
:
1364 case -NFS4ERR_STALE_STATEID
:
1365 set_bit(NFS_DELEGATED_STATE
, &state
->flags
);
1366 case -NFS4ERR_EXPIRED
:
1367 /* Don't recall a delegation if it was lost */
1368 nfs4_schedule_lease_recovery(server
->nfs_client
);
1371 case -NFS4ERR_DELEG_REVOKED
:
1372 case -NFS4ERR_ADMIN_REVOKED
:
1373 case -NFS4ERR_BAD_STATEID
:
1374 nfs_inode_find_state_and_recover(state
->inode
,
1376 nfs4_schedule_stateid_recovery(server
, state
);
1381 set_bit(NFS_DELEGATED_STATE
, &state
->flags
);
1382 err
= nfs4_handle_exception(server
, err
, &exception
);
1383 } while (exception
.retry
);
1388 static void nfs4_open_confirm_done(struct rpc_task
*task
, void *calldata
)
1390 struct nfs4_opendata
*data
= calldata
;
1392 data
->rpc_status
= task
->tk_status
;
1393 if (data
->rpc_status
== 0) {
1394 nfs4_stateid_copy(&data
->o_res
.stateid
, &data
->c_res
.stateid
);
1395 nfs_confirm_seqid(&data
->owner
->so_seqid
, 0);
1396 renew_lease(data
->o_res
.server
, data
->timestamp
);
1401 static void nfs4_open_confirm_release(void *calldata
)
1403 struct nfs4_opendata
*data
= calldata
;
1404 struct nfs4_state
*state
= NULL
;
1406 /* If this request hasn't been cancelled, do nothing */
1407 if (data
->cancelled
== 0)
1409 /* In case of error, no cleanup! */
1410 if (!data
->rpc_done
)
1412 state
= nfs4_opendata_to_nfs4_state(data
);
1414 nfs4_close_state(state
, data
->o_arg
.fmode
);
1416 nfs4_opendata_put(data
);
1419 static const struct rpc_call_ops nfs4_open_confirm_ops
= {
1420 .rpc_call_done
= nfs4_open_confirm_done
,
1421 .rpc_release
= nfs4_open_confirm_release
,
1425 * Note: On error, nfs4_proc_open_confirm will free the struct nfs4_opendata
1427 static int _nfs4_proc_open_confirm(struct nfs4_opendata
*data
)
1429 struct nfs_server
*server
= NFS_SERVER(data
->dir
->d_inode
);
1430 struct rpc_task
*task
;
1431 struct rpc_message msg
= {
1432 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_OPEN_CONFIRM
],
1433 .rpc_argp
= &data
->c_arg
,
1434 .rpc_resp
= &data
->c_res
,
1435 .rpc_cred
= data
->owner
->so_cred
,
1437 struct rpc_task_setup task_setup_data
= {
1438 .rpc_client
= server
->client
,
1439 .rpc_message
= &msg
,
1440 .callback_ops
= &nfs4_open_confirm_ops
,
1441 .callback_data
= data
,
1442 .workqueue
= nfsiod_workqueue
,
1443 .flags
= RPC_TASK_ASYNC
,
1447 kref_get(&data
->kref
);
1449 data
->rpc_status
= 0;
1450 data
->timestamp
= jiffies
;
1451 task
= rpc_run_task(&task_setup_data
);
1453 return PTR_ERR(task
);
1454 status
= nfs4_wait_for_completion_rpc_task(task
);
1456 data
->cancelled
= 1;
1459 status
= data
->rpc_status
;
1464 static void nfs4_open_prepare(struct rpc_task
*task
, void *calldata
)
1466 struct nfs4_opendata
*data
= calldata
;
1467 struct nfs4_state_owner
*sp
= data
->owner
;
1469 if (nfs_wait_on_sequence(data
->o_arg
.seqid
, task
) != 0)
1472 * Check if we still need to send an OPEN call, or if we can use
1473 * a delegation instead.
1475 if (data
->state
!= NULL
) {
1476 struct nfs_delegation
*delegation
;
1478 if (can_open_cached(data
->state
, data
->o_arg
.fmode
, data
->o_arg
.open_flags
))
1481 delegation
= rcu_dereference(NFS_I(data
->state
->inode
)->delegation
);
1482 if (data
->o_arg
.claim
!= NFS4_OPEN_CLAIM_DELEGATE_CUR
&&
1483 can_open_delegated(delegation
, data
->o_arg
.fmode
))
1484 goto unlock_no_action
;
1487 /* Update client id. */
1488 data
->o_arg
.clientid
= sp
->so_server
->nfs_client
->cl_clientid
;
1489 if (data
->o_arg
.claim
== NFS4_OPEN_CLAIM_PREVIOUS
) {
1490 task
->tk_msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_OPEN_NOATTR
];
1491 data
->o_arg
.open_bitmap
= &nfs4_open_noattr_bitmap
[0];
1492 nfs_copy_fh(&data
->o_res
.fh
, data
->o_arg
.fh
);
1494 data
->timestamp
= jiffies
;
1495 if (nfs4_setup_sequence(data
->o_arg
.server
,
1496 &data
->o_arg
.seq_args
,
1497 &data
->o_res
.seq_res
,
1499 nfs_release_seqid(data
->o_arg
.seqid
);
1504 task
->tk_action
= NULL
;
1506 nfs4_sequence_done(task
, &data
->o_res
.seq_res
);
1509 static void nfs4_open_done(struct rpc_task
*task
, void *calldata
)
1511 struct nfs4_opendata
*data
= calldata
;
1513 data
->rpc_status
= task
->tk_status
;
1515 if (!nfs4_sequence_done(task
, &data
->o_res
.seq_res
))
1518 if (task
->tk_status
== 0) {
1519 if (data
->o_res
.f_attr
->valid
& NFS_ATTR_FATTR_TYPE
) {
1520 switch (data
->o_res
.f_attr
->mode
& S_IFMT
) {
1524 data
->rpc_status
= -ELOOP
;
1527 data
->rpc_status
= -EISDIR
;
1530 data
->rpc_status
= -ENOTDIR
;
1533 renew_lease(data
->o_res
.server
, data
->timestamp
);
1534 if (!(data
->o_res
.rflags
& NFS4_OPEN_RESULT_CONFIRM
))
1535 nfs_confirm_seqid(&data
->owner
->so_seqid
, 0);
1540 static void nfs4_open_release(void *calldata
)
1542 struct nfs4_opendata
*data
= calldata
;
1543 struct nfs4_state
*state
= NULL
;
1545 /* If this request hasn't been cancelled, do nothing */
1546 if (data
->cancelled
== 0)
1548 /* In case of error, no cleanup! */
1549 if (data
->rpc_status
!= 0 || !data
->rpc_done
)
1551 /* In case we need an open_confirm, no cleanup! */
1552 if (data
->o_res
.rflags
& NFS4_OPEN_RESULT_CONFIRM
)
1554 state
= nfs4_opendata_to_nfs4_state(data
);
1556 nfs4_close_state(state
, data
->o_arg
.fmode
);
1558 nfs4_opendata_put(data
);
1561 static const struct rpc_call_ops nfs4_open_ops
= {
1562 .rpc_call_prepare
= nfs4_open_prepare
,
1563 .rpc_call_done
= nfs4_open_done
,
1564 .rpc_release
= nfs4_open_release
,
1567 static int nfs4_run_open_task(struct nfs4_opendata
*data
, int isrecover
)
1569 struct inode
*dir
= data
->dir
->d_inode
;
1570 struct nfs_server
*server
= NFS_SERVER(dir
);
1571 struct nfs_openargs
*o_arg
= &data
->o_arg
;
1572 struct nfs_openres
*o_res
= &data
->o_res
;
1573 struct rpc_task
*task
;
1574 struct rpc_message msg
= {
1575 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_OPEN
],
1578 .rpc_cred
= data
->owner
->so_cred
,
1580 struct rpc_task_setup task_setup_data
= {
1581 .rpc_client
= server
->client
,
1582 .rpc_message
= &msg
,
1583 .callback_ops
= &nfs4_open_ops
,
1584 .callback_data
= data
,
1585 .workqueue
= nfsiod_workqueue
,
1586 .flags
= RPC_TASK_ASYNC
,
1590 nfs41_init_sequence(&o_arg
->seq_args
, &o_res
->seq_res
, 1);
1591 kref_get(&data
->kref
);
1593 data
->rpc_status
= 0;
1594 data
->cancelled
= 0;
1596 nfs4_set_sequence_privileged(&o_arg
->seq_args
);
1597 task
= rpc_run_task(&task_setup_data
);
1599 return PTR_ERR(task
);
1600 status
= nfs4_wait_for_completion_rpc_task(task
);
1602 data
->cancelled
= 1;
1605 status
= data
->rpc_status
;
1611 static int _nfs4_recover_proc_open(struct nfs4_opendata
*data
)
1613 struct inode
*dir
= data
->dir
->d_inode
;
1614 struct nfs_openres
*o_res
= &data
->o_res
;
1617 status
= nfs4_run_open_task(data
, 1);
1618 if (status
!= 0 || !data
->rpc_done
)
1621 nfs_fattr_map_and_free_names(NFS_SERVER(dir
), &data
->f_attr
);
1623 if (o_res
->rflags
& NFS4_OPEN_RESULT_CONFIRM
) {
1624 status
= _nfs4_proc_open_confirm(data
);
1632 static int nfs4_opendata_access(struct rpc_cred
*cred
,
1633 struct nfs4_opendata
*opendata
,
1634 struct nfs4_state
*state
, fmode_t fmode
,
1637 struct nfs_access_entry cache
;
1640 /* access call failed or for some reason the server doesn't
1641 * support any access modes -- defer access call until later */
1642 if (opendata
->o_res
.access_supported
== 0)
1646 /* don't check MAY_WRITE - a newly created file may not have
1647 * write mode bits, but POSIX allows the creating process to write.
1648 * use openflags to check for exec, because fmode won't
1649 * always have FMODE_EXEC set when file open for exec. */
1650 if (openflags
& __FMODE_EXEC
) {
1651 /* ONLY check for exec rights */
1653 } else if (fmode
& FMODE_READ
)
1657 cache
.jiffies
= jiffies
;
1658 nfs_access_set_mask(&cache
, opendata
->o_res
.access_result
);
1659 nfs_access_add_cache(state
->inode
, &cache
);
1661 if ((mask
& ~cache
.mask
& (MAY_READ
| MAY_EXEC
)) == 0)
1664 /* even though OPEN succeeded, access is denied. Close the file */
1665 nfs4_close_state(state
, fmode
);
1670 * Note: On error, nfs4_proc_open will free the struct nfs4_opendata
1672 static int _nfs4_proc_open(struct nfs4_opendata
*data
)
1674 struct inode
*dir
= data
->dir
->d_inode
;
1675 struct nfs_server
*server
= NFS_SERVER(dir
);
1676 struct nfs_openargs
*o_arg
= &data
->o_arg
;
1677 struct nfs_openres
*o_res
= &data
->o_res
;
1680 status
= nfs4_run_open_task(data
, 0);
1681 if (!data
->rpc_done
)
1684 if (status
== -NFS4ERR_BADNAME
&&
1685 !(o_arg
->open_flags
& O_CREAT
))
1690 nfs_fattr_map_and_free_names(server
, &data
->f_attr
);
1692 if (o_arg
->open_flags
& O_CREAT
)
1693 update_changeattr(dir
, &o_res
->cinfo
);
1694 if ((o_res
->rflags
& NFS4_OPEN_RESULT_LOCKTYPE_POSIX
) == 0)
1695 server
->caps
&= ~NFS_CAP_POSIX_LOCK
;
1696 if(o_res
->rflags
& NFS4_OPEN_RESULT_CONFIRM
) {
1697 status
= _nfs4_proc_open_confirm(data
);
1701 if (!(o_res
->f_attr
->valid
& NFS_ATTR_FATTR
))
1702 _nfs4_proc_getattr(server
, &o_res
->fh
, o_res
->f_attr
);
1706 static int nfs4_recover_expired_lease(struct nfs_server
*server
)
1708 return nfs4_client_recover_expired_lease(server
->nfs_client
);
1713 * reclaim state on the server after a network partition.
1714 * Assumes caller holds the appropriate lock
1716 static int _nfs4_open_expired(struct nfs_open_context
*ctx
, struct nfs4_state
*state
)
1718 struct nfs4_opendata
*opendata
;
1721 opendata
= nfs4_open_recoverdata_alloc(ctx
, state
);
1722 if (IS_ERR(opendata
))
1723 return PTR_ERR(opendata
);
1724 ret
= nfs4_open_recover(opendata
, state
);
1726 d_drop(ctx
->dentry
);
1727 nfs4_opendata_put(opendata
);
1731 static int nfs4_do_open_expired(struct nfs_open_context
*ctx
, struct nfs4_state
*state
)
1733 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
1734 struct nfs4_exception exception
= { };
1738 err
= _nfs4_open_expired(ctx
, state
);
1742 case -NFS4ERR_GRACE
:
1743 case -NFS4ERR_DELAY
:
1744 nfs4_handle_exception(server
, err
, &exception
);
1747 } while (exception
.retry
);
1752 static int nfs4_open_expired(struct nfs4_state_owner
*sp
, struct nfs4_state
*state
)
1754 struct nfs_open_context
*ctx
;
1757 ctx
= nfs4_state_find_open_context(state
);
1759 return PTR_ERR(ctx
);
1760 ret
= nfs4_do_open_expired(ctx
, state
);
1761 put_nfs_open_context(ctx
);
1765 #if defined(CONFIG_NFS_V4_1)
1766 static void nfs41_clear_delegation_stateid(struct nfs4_state
*state
)
1768 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
1769 nfs4_stateid
*stateid
= &state
->stateid
;
1772 /* If a state reset has been done, test_stateid is unneeded */
1773 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) == 0)
1776 status
= nfs41_test_stateid(server
, stateid
);
1777 if (status
!= NFS_OK
) {
1778 /* Free the stateid unless the server explicitly
1779 * informs us the stateid is unrecognized. */
1780 if (status
!= -NFS4ERR_BAD_STATEID
)
1781 nfs41_free_stateid(server
, stateid
);
1782 nfs_remove_bad_delegation(state
->inode
);
1784 write_seqlock(&state
->seqlock
);
1785 nfs4_stateid_copy(&state
->stateid
, &state
->open_stateid
);
1786 write_sequnlock(&state
->seqlock
);
1787 clear_bit(NFS_DELEGATED_STATE
, &state
->flags
);
1792 * nfs41_check_open_stateid - possibly free an open stateid
1794 * @state: NFSv4 state for an inode
1796 * Returns NFS_OK if recovery for this stateid is now finished.
1797 * Otherwise a negative NFS4ERR value is returned.
1799 static int nfs41_check_open_stateid(struct nfs4_state
*state
)
1801 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
1802 nfs4_stateid
*stateid
= &state
->open_stateid
;
1805 /* If a state reset has been done, test_stateid is unneeded */
1806 if ((test_bit(NFS_O_RDONLY_STATE
, &state
->flags
) == 0) &&
1807 (test_bit(NFS_O_WRONLY_STATE
, &state
->flags
) == 0) &&
1808 (test_bit(NFS_O_RDWR_STATE
, &state
->flags
) == 0))
1809 return -NFS4ERR_BAD_STATEID
;
1811 status
= nfs41_test_stateid(server
, stateid
);
1812 if (status
!= NFS_OK
) {
1813 /* Free the stateid unless the server explicitly
1814 * informs us the stateid is unrecognized. */
1815 if (status
!= -NFS4ERR_BAD_STATEID
)
1816 nfs41_free_stateid(server
, stateid
);
1818 clear_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
1819 clear_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
1820 clear_bit(NFS_O_RDWR_STATE
, &state
->flags
);
1825 static int nfs41_open_expired(struct nfs4_state_owner
*sp
, struct nfs4_state
*state
)
1829 nfs41_clear_delegation_stateid(state
);
1830 status
= nfs41_check_open_stateid(state
);
1831 if (status
!= NFS_OK
)
1832 status
= nfs4_open_expired(sp
, state
);
1838 * on an EXCLUSIVE create, the server should send back a bitmask with FATTR4-*
1839 * fields corresponding to attributes that were used to store the verifier.
1840 * Make sure we clobber those fields in the later setattr call
1842 static inline void nfs4_exclusive_attrset(struct nfs4_opendata
*opendata
, struct iattr
*sattr
)
1844 if ((opendata
->o_res
.attrset
[1] & FATTR4_WORD1_TIME_ACCESS
) &&
1845 !(sattr
->ia_valid
& ATTR_ATIME_SET
))
1846 sattr
->ia_valid
|= ATTR_ATIME
;
1848 if ((opendata
->o_res
.attrset
[1] & FATTR4_WORD1_TIME_MODIFY
) &&
1849 !(sattr
->ia_valid
& ATTR_MTIME_SET
))
1850 sattr
->ia_valid
|= ATTR_MTIME
;
1853 static int _nfs4_open_and_get_state(struct nfs4_opendata
*opendata
,
1856 struct nfs4_state
**res
)
1858 struct nfs4_state_owner
*sp
= opendata
->owner
;
1859 struct nfs_server
*server
= sp
->so_server
;
1860 struct nfs4_state
*state
;
1864 seq
= raw_seqcount_begin(&sp
->so_reclaim_seqcount
);
1866 ret
= _nfs4_proc_open(opendata
);
1870 state
= nfs4_opendata_to_nfs4_state(opendata
);
1871 ret
= PTR_ERR(state
);
1874 if (server
->caps
& NFS_CAP_POSIX_LOCK
)
1875 set_bit(NFS_STATE_POSIX_LOCKS
, &state
->flags
);
1877 ret
= nfs4_opendata_access(sp
->so_cred
, opendata
, state
, fmode
, flags
);
1881 if (read_seqcount_retry(&sp
->so_reclaim_seqcount
, seq
)) {
1882 nfs4_schedule_stateid_recovery(server
, state
);
1883 nfs4_wait_clnt_recover(server
->nfs_client
);
1891 * Returns a referenced nfs4_state
1893 static int _nfs4_do_open(struct inode
*dir
,
1894 struct dentry
*dentry
,
1897 struct iattr
*sattr
,
1898 struct rpc_cred
*cred
,
1899 struct nfs4_state
**res
,
1900 struct nfs4_threshold
**ctx_th
)
1902 struct nfs4_state_owner
*sp
;
1903 struct nfs4_state
*state
= NULL
;
1904 struct nfs_server
*server
= NFS_SERVER(dir
);
1905 struct nfs4_opendata
*opendata
;
1908 /* Protect against reboot recovery conflicts */
1910 sp
= nfs4_get_state_owner(server
, cred
, GFP_KERNEL
);
1912 dprintk("nfs4_do_open: nfs4_get_state_owner failed!\n");
1915 status
= nfs4_recover_expired_lease(server
);
1917 goto err_put_state_owner
;
1918 if (dentry
->d_inode
!= NULL
)
1919 nfs4_return_incompatible_delegation(dentry
->d_inode
, fmode
);
1921 opendata
= nfs4_opendata_alloc(dentry
, sp
, fmode
, flags
, sattr
, GFP_KERNEL
);
1922 if (opendata
== NULL
)
1923 goto err_put_state_owner
;
1925 if (ctx_th
&& server
->attr_bitmask
[2] & FATTR4_WORD2_MDSTHRESHOLD
) {
1926 opendata
->f_attr
.mdsthreshold
= pnfs_mdsthreshold_alloc();
1927 if (!opendata
->f_attr
.mdsthreshold
)
1928 goto err_opendata_put
;
1929 opendata
->o_arg
.open_bitmap
= &nfs4_pnfs_open_bitmap
[0];
1931 if (dentry
->d_inode
!= NULL
)
1932 opendata
->state
= nfs4_get_open_state(dentry
->d_inode
, sp
);
1934 status
= _nfs4_open_and_get_state(opendata
, fmode
, flags
, &state
);
1936 goto err_opendata_put
;
1938 if (opendata
->o_arg
.open_flags
& O_EXCL
) {
1939 nfs4_exclusive_attrset(opendata
, sattr
);
1941 nfs_fattr_init(opendata
->o_res
.f_attr
);
1942 status
= nfs4_do_setattr(state
->inode
, cred
,
1943 opendata
->o_res
.f_attr
, sattr
,
1946 nfs_setattr_update_inode(state
->inode
, sattr
);
1947 nfs_post_op_update_inode(state
->inode
, opendata
->o_res
.f_attr
);
1950 if (pnfs_use_threshold(ctx_th
, opendata
->f_attr
.mdsthreshold
, server
))
1951 *ctx_th
= opendata
->f_attr
.mdsthreshold
;
1953 kfree(opendata
->f_attr
.mdsthreshold
);
1954 opendata
->f_attr
.mdsthreshold
= NULL
;
1956 nfs4_opendata_put(opendata
);
1957 nfs4_put_state_owner(sp
);
1961 kfree(opendata
->f_attr
.mdsthreshold
);
1962 nfs4_opendata_put(opendata
);
1963 err_put_state_owner
:
1964 nfs4_put_state_owner(sp
);
1971 static struct nfs4_state
*nfs4_do_open(struct inode
*dir
,
1972 struct dentry
*dentry
,
1975 struct iattr
*sattr
,
1976 struct rpc_cred
*cred
,
1977 struct nfs4_threshold
**ctx_th
)
1979 struct nfs4_exception exception
= { };
1980 struct nfs4_state
*res
;
1983 fmode
&= FMODE_READ
|FMODE_WRITE
|FMODE_EXEC
;
1985 status
= _nfs4_do_open(dir
, dentry
, fmode
, flags
, sattr
, cred
,
1989 /* NOTE: BAD_SEQID means the server and client disagree about the
1990 * book-keeping w.r.t. state-changing operations
1991 * (OPEN/CLOSE/LOCK/LOCKU...)
1992 * It is actually a sign of a bug on the client or on the server.
1994 * If we receive a BAD_SEQID error in the particular case of
1995 * doing an OPEN, we assume that nfs_increment_open_seqid() will
1996 * have unhashed the old state_owner for us, and that we can
1997 * therefore safely retry using a new one. We should still warn
1998 * the user though...
2000 if (status
== -NFS4ERR_BAD_SEQID
) {
2001 pr_warn_ratelimited("NFS: v4 server %s "
2002 " returned a bad sequence-id error!\n",
2003 NFS_SERVER(dir
)->nfs_client
->cl_hostname
);
2004 exception
.retry
= 1;
2008 * BAD_STATEID on OPEN means that the server cancelled our
2009 * state before it received the OPEN_CONFIRM.
2010 * Recover by retrying the request as per the discussion
2011 * on Page 181 of RFC3530.
2013 if (status
== -NFS4ERR_BAD_STATEID
) {
2014 exception
.retry
= 1;
2017 if (status
== -EAGAIN
) {
2018 /* We must have found a delegation */
2019 exception
.retry
= 1;
2022 res
= ERR_PTR(nfs4_handle_exception(NFS_SERVER(dir
),
2023 status
, &exception
));
2024 } while (exception
.retry
);
2028 static int _nfs4_do_setattr(struct inode
*inode
, struct rpc_cred
*cred
,
2029 struct nfs_fattr
*fattr
, struct iattr
*sattr
,
2030 struct nfs4_state
*state
)
2032 struct nfs_server
*server
= NFS_SERVER(inode
);
2033 struct nfs_setattrargs arg
= {
2034 .fh
= NFS_FH(inode
),
2037 .bitmask
= server
->attr_bitmask
,
2039 struct nfs_setattrres res
= {
2043 struct rpc_message msg
= {
2044 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETATTR
],
2049 unsigned long timestamp
= jiffies
;
2052 nfs_fattr_init(fattr
);
2054 if (state
!= NULL
) {
2055 struct nfs_lockowner lockowner
= {
2056 .l_owner
= current
->files
,
2057 .l_pid
= current
->tgid
,
2059 nfs4_select_rw_stateid(&arg
.stateid
, state
, FMODE_WRITE
,
2061 } else if (nfs4_copy_delegation_stateid(&arg
.stateid
, inode
,
2063 /* Use that stateid */
2065 nfs4_stateid_copy(&arg
.stateid
, &zero_stateid
);
2067 status
= nfs4_call_sync(server
->client
, server
, &msg
, &arg
.seq_args
, &res
.seq_res
, 1);
2068 if (status
== 0 && state
!= NULL
)
2069 renew_lease(server
, timestamp
);
2073 static int nfs4_do_setattr(struct inode
*inode
, struct rpc_cred
*cred
,
2074 struct nfs_fattr
*fattr
, struct iattr
*sattr
,
2075 struct nfs4_state
*state
)
2077 struct nfs_server
*server
= NFS_SERVER(inode
);
2078 struct nfs4_exception exception
= {
2084 err
= _nfs4_do_setattr(inode
, cred
, fattr
, sattr
, state
);
2086 case -NFS4ERR_OPENMODE
:
2087 if (state
&& !(state
->state
& FMODE_WRITE
)) {
2089 if (sattr
->ia_valid
& ATTR_OPEN
)
2094 err
= nfs4_handle_exception(server
, err
, &exception
);
2095 } while (exception
.retry
);
2100 struct nfs4_closedata
{
2101 struct inode
*inode
;
2102 struct nfs4_state
*state
;
2103 struct nfs_closeargs arg
;
2104 struct nfs_closeres res
;
2105 struct nfs_fattr fattr
;
2106 unsigned long timestamp
;
2111 static void nfs4_free_closedata(void *data
)
2113 struct nfs4_closedata
*calldata
= data
;
2114 struct nfs4_state_owner
*sp
= calldata
->state
->owner
;
2115 struct super_block
*sb
= calldata
->state
->inode
->i_sb
;
2118 pnfs_roc_release(calldata
->state
->inode
);
2119 nfs4_put_open_state(calldata
->state
);
2120 nfs_free_seqid(calldata
->arg
.seqid
);
2121 nfs4_put_state_owner(sp
);
2122 nfs_sb_deactive(sb
);
2126 static void nfs4_close_clear_stateid_flags(struct nfs4_state
*state
,
2129 spin_lock(&state
->owner
->so_lock
);
2130 if (!(fmode
& FMODE_READ
))
2131 clear_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
2132 if (!(fmode
& FMODE_WRITE
))
2133 clear_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
2134 clear_bit(NFS_O_RDWR_STATE
, &state
->flags
);
2135 spin_unlock(&state
->owner
->so_lock
);
2138 static void nfs4_close_done(struct rpc_task
*task
, void *data
)
2140 struct nfs4_closedata
*calldata
= data
;
2141 struct nfs4_state
*state
= calldata
->state
;
2142 struct nfs_server
*server
= NFS_SERVER(calldata
->inode
);
2144 dprintk("%s: begin!\n", __func__
);
2145 if (!nfs4_sequence_done(task
, &calldata
->res
.seq_res
))
2147 /* hmm. we are done with the inode, and in the process of freeing
2148 * the state_owner. we keep this around to process errors
2150 switch (task
->tk_status
) {
2153 pnfs_roc_set_barrier(state
->inode
,
2154 calldata
->roc_barrier
);
2155 nfs_set_open_stateid(state
, &calldata
->res
.stateid
, 0);
2156 renew_lease(server
, calldata
->timestamp
);
2157 nfs4_close_clear_stateid_flags(state
,
2158 calldata
->arg
.fmode
);
2160 case -NFS4ERR_STALE_STATEID
:
2161 case -NFS4ERR_OLD_STATEID
:
2162 case -NFS4ERR_BAD_STATEID
:
2163 case -NFS4ERR_EXPIRED
:
2164 if (calldata
->arg
.fmode
== 0)
2167 if (nfs4_async_handle_error(task
, server
, state
) == -EAGAIN
)
2168 rpc_restart_call_prepare(task
);
2170 nfs_release_seqid(calldata
->arg
.seqid
);
2171 nfs_refresh_inode(calldata
->inode
, calldata
->res
.fattr
);
2172 dprintk("%s: done, ret = %d!\n", __func__
, task
->tk_status
);
2175 static void nfs4_close_prepare(struct rpc_task
*task
, void *data
)
2177 struct nfs4_closedata
*calldata
= data
;
2178 struct nfs4_state
*state
= calldata
->state
;
2179 struct inode
*inode
= calldata
->inode
;
2182 dprintk("%s: begin!\n", __func__
);
2183 if (nfs_wait_on_sequence(calldata
->arg
.seqid
, task
) != 0)
2186 task
->tk_msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_OPEN_DOWNGRADE
];
2187 calldata
->arg
.fmode
= FMODE_READ
|FMODE_WRITE
;
2188 spin_lock(&state
->owner
->so_lock
);
2189 /* Calculate the change in open mode */
2190 if (state
->n_rdwr
== 0) {
2191 if (state
->n_rdonly
== 0) {
2192 call_close
|= test_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
2193 call_close
|= test_bit(NFS_O_RDWR_STATE
, &state
->flags
);
2194 calldata
->arg
.fmode
&= ~FMODE_READ
;
2196 if (state
->n_wronly
== 0) {
2197 call_close
|= test_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
2198 call_close
|= test_bit(NFS_O_RDWR_STATE
, &state
->flags
);
2199 calldata
->arg
.fmode
&= ~FMODE_WRITE
;
2202 spin_unlock(&state
->owner
->so_lock
);
2205 /* Note: exit _without_ calling nfs4_close_done */
2209 if (calldata
->arg
.fmode
== 0) {
2210 task
->tk_msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_CLOSE
];
2211 if (calldata
->roc
&&
2212 pnfs_roc_drain(inode
, &calldata
->roc_barrier
, task
))
2216 nfs_fattr_init(calldata
->res
.fattr
);
2217 calldata
->timestamp
= jiffies
;
2218 if (nfs4_setup_sequence(NFS_SERVER(inode
),
2219 &calldata
->arg
.seq_args
,
2220 &calldata
->res
.seq_res
,
2222 nfs_release_seqid(calldata
->arg
.seqid
);
2223 dprintk("%s: done!\n", __func__
);
2226 task
->tk_action
= NULL
;
2228 nfs4_sequence_done(task
, &calldata
->res
.seq_res
);
2231 static const struct rpc_call_ops nfs4_close_ops
= {
2232 .rpc_call_prepare
= nfs4_close_prepare
,
2233 .rpc_call_done
= nfs4_close_done
,
2234 .rpc_release
= nfs4_free_closedata
,
2238 * It is possible for data to be read/written from a mem-mapped file
2239 * after the sys_close call (which hits the vfs layer as a flush).
2240 * This means that we can't safely call nfsv4 close on a file until
2241 * the inode is cleared. This in turn means that we are not good
2242 * NFSv4 citizens - we do not indicate to the server to update the file's
2243 * share state even when we are done with one of the three share
2244 * stateid's in the inode.
2246 * NOTE: Caller must be holding the sp->so_owner semaphore!
2248 int nfs4_do_close(struct nfs4_state
*state
, gfp_t gfp_mask
, int wait
)
2250 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
2251 struct nfs4_closedata
*calldata
;
2252 struct nfs4_state_owner
*sp
= state
->owner
;
2253 struct rpc_task
*task
;
2254 struct rpc_message msg
= {
2255 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_CLOSE
],
2256 .rpc_cred
= state
->owner
->so_cred
,
2258 struct rpc_task_setup task_setup_data
= {
2259 .rpc_client
= server
->client
,
2260 .rpc_message
= &msg
,
2261 .callback_ops
= &nfs4_close_ops
,
2262 .workqueue
= nfsiod_workqueue
,
2263 .flags
= RPC_TASK_ASYNC
,
2265 int status
= -ENOMEM
;
2267 calldata
= kzalloc(sizeof(*calldata
), gfp_mask
);
2268 if (calldata
== NULL
)
2270 nfs41_init_sequence(&calldata
->arg
.seq_args
, &calldata
->res
.seq_res
, 1);
2271 calldata
->inode
= state
->inode
;
2272 calldata
->state
= state
;
2273 calldata
->arg
.fh
= NFS_FH(state
->inode
);
2274 calldata
->arg
.stateid
= &state
->open_stateid
;
2275 /* Serialization for the sequence id */
2276 calldata
->arg
.seqid
= nfs_alloc_seqid(&state
->owner
->so_seqid
, gfp_mask
);
2277 if (calldata
->arg
.seqid
== NULL
)
2278 goto out_free_calldata
;
2279 calldata
->arg
.fmode
= 0;
2280 calldata
->arg
.bitmask
= server
->cache_consistency_bitmask
;
2281 calldata
->res
.fattr
= &calldata
->fattr
;
2282 calldata
->res
.seqid
= calldata
->arg
.seqid
;
2283 calldata
->res
.server
= server
;
2284 calldata
->roc
= pnfs_roc(state
->inode
);
2285 nfs_sb_active(calldata
->inode
->i_sb
);
2287 msg
.rpc_argp
= &calldata
->arg
;
2288 msg
.rpc_resp
= &calldata
->res
;
2289 task_setup_data
.callback_data
= calldata
;
2290 task
= rpc_run_task(&task_setup_data
);
2292 return PTR_ERR(task
);
2295 status
= rpc_wait_for_completion_task(task
);
2301 nfs4_put_open_state(state
);
2302 nfs4_put_state_owner(sp
);
2306 static struct inode
*
2307 nfs4_atomic_open(struct inode
*dir
, struct nfs_open_context
*ctx
, int open_flags
, struct iattr
*attr
)
2309 struct nfs4_state
*state
;
2311 /* Protect against concurrent sillydeletes */
2312 state
= nfs4_do_open(dir
, ctx
->dentry
, ctx
->mode
, open_flags
, attr
,
2313 ctx
->cred
, &ctx
->mdsthreshold
);
2315 return ERR_CAST(state
);
2317 return igrab(state
->inode
);
2320 static void nfs4_close_context(struct nfs_open_context
*ctx
, int is_sync
)
2322 if (ctx
->state
== NULL
)
2325 nfs4_close_sync(ctx
->state
, ctx
->mode
);
2327 nfs4_close_state(ctx
->state
, ctx
->mode
);
2330 static int _nfs4_server_capabilities(struct nfs_server
*server
, struct nfs_fh
*fhandle
)
2332 struct nfs4_server_caps_arg args
= {
2335 struct nfs4_server_caps_res res
= {};
2336 struct rpc_message msg
= {
2337 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SERVER_CAPS
],
2343 status
= nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
2345 memcpy(server
->attr_bitmask
, res
.attr_bitmask
, sizeof(server
->attr_bitmask
));
2346 server
->caps
&= ~(NFS_CAP_ACLS
|NFS_CAP_HARDLINKS
|
2347 NFS_CAP_SYMLINKS
|NFS_CAP_FILEID
|
2348 NFS_CAP_MODE
|NFS_CAP_NLINK
|NFS_CAP_OWNER
|
2349 NFS_CAP_OWNER_GROUP
|NFS_CAP_ATIME
|
2350 NFS_CAP_CTIME
|NFS_CAP_MTIME
);
2351 if (res
.attr_bitmask
[0] & FATTR4_WORD0_ACL
)
2352 server
->caps
|= NFS_CAP_ACLS
;
2353 if (res
.has_links
!= 0)
2354 server
->caps
|= NFS_CAP_HARDLINKS
;
2355 if (res
.has_symlinks
!= 0)
2356 server
->caps
|= NFS_CAP_SYMLINKS
;
2357 if (res
.attr_bitmask
[0] & FATTR4_WORD0_FILEID
)
2358 server
->caps
|= NFS_CAP_FILEID
;
2359 if (res
.attr_bitmask
[1] & FATTR4_WORD1_MODE
)
2360 server
->caps
|= NFS_CAP_MODE
;
2361 if (res
.attr_bitmask
[1] & FATTR4_WORD1_NUMLINKS
)
2362 server
->caps
|= NFS_CAP_NLINK
;
2363 if (res
.attr_bitmask
[1] & FATTR4_WORD1_OWNER
)
2364 server
->caps
|= NFS_CAP_OWNER
;
2365 if (res
.attr_bitmask
[1] & FATTR4_WORD1_OWNER_GROUP
)
2366 server
->caps
|= NFS_CAP_OWNER_GROUP
;
2367 if (res
.attr_bitmask
[1] & FATTR4_WORD1_TIME_ACCESS
)
2368 server
->caps
|= NFS_CAP_ATIME
;
2369 if (res
.attr_bitmask
[1] & FATTR4_WORD1_TIME_METADATA
)
2370 server
->caps
|= NFS_CAP_CTIME
;
2371 if (res
.attr_bitmask
[1] & FATTR4_WORD1_TIME_MODIFY
)
2372 server
->caps
|= NFS_CAP_MTIME
;
2374 memcpy(server
->cache_consistency_bitmask
, res
.attr_bitmask
, sizeof(server
->cache_consistency_bitmask
));
2375 server
->cache_consistency_bitmask
[0] &= FATTR4_WORD0_CHANGE
|FATTR4_WORD0_SIZE
;
2376 server
->cache_consistency_bitmask
[1] &= FATTR4_WORD1_TIME_METADATA
|FATTR4_WORD1_TIME_MODIFY
;
2377 server
->acl_bitmask
= res
.acl_bitmask
;
2378 server
->fh_expire_type
= res
.fh_expire_type
;
2384 int nfs4_server_capabilities(struct nfs_server
*server
, struct nfs_fh
*fhandle
)
2386 struct nfs4_exception exception
= { };
2389 err
= nfs4_handle_exception(server
,
2390 _nfs4_server_capabilities(server
, fhandle
),
2392 } while (exception
.retry
);
2396 static int _nfs4_lookup_root(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
2397 struct nfs_fsinfo
*info
)
2399 struct nfs4_lookup_root_arg args
= {
2400 .bitmask
= nfs4_fattr_bitmap
,
2402 struct nfs4_lookup_res res
= {
2404 .fattr
= info
->fattr
,
2407 struct rpc_message msg
= {
2408 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOOKUP_ROOT
],
2413 nfs_fattr_init(info
->fattr
);
2414 return nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
2417 static int nfs4_lookup_root(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
2418 struct nfs_fsinfo
*info
)
2420 struct nfs4_exception exception
= { };
2423 err
= _nfs4_lookup_root(server
, fhandle
, info
);
2426 case -NFS4ERR_WRONGSEC
:
2429 err
= nfs4_handle_exception(server
, err
, &exception
);
2431 } while (exception
.retry
);
2436 static int nfs4_lookup_root_sec(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
2437 struct nfs_fsinfo
*info
, rpc_authflavor_t flavor
)
2439 struct rpc_auth
*auth
;
2442 auth
= rpcauth_create(flavor
, server
->client
);
2447 ret
= nfs4_lookup_root(server
, fhandle
, info
);
2452 static int nfs4_find_root_sec(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
2453 struct nfs_fsinfo
*info
)
2455 int i
, len
, status
= 0;
2456 rpc_authflavor_t flav_array
[NFS_MAX_SECFLAVORS
];
2458 len
= rpcauth_list_flavors(flav_array
, ARRAY_SIZE(flav_array
));
2462 for (i
= 0; i
< len
; i
++) {
2463 /* AUTH_UNIX is the default flavor if none was specified,
2464 * thus has already been tried. */
2465 if (flav_array
[i
] == RPC_AUTH_UNIX
)
2468 status
= nfs4_lookup_root_sec(server
, fhandle
, info
, flav_array
[i
]);
2469 if (status
== -NFS4ERR_WRONGSEC
|| status
== -EACCES
)
2474 * -EACCESS could mean that the user doesn't have correct permissions
2475 * to access the mount. It could also mean that we tried to mount
2476 * with a gss auth flavor, but rpc.gssd isn't running. Either way,
2477 * existing mount programs don't handle -EACCES very well so it should
2478 * be mapped to -EPERM instead.
2480 if (status
== -EACCES
)
2486 * get the file handle for the "/" directory on the server
2488 int nfs4_proc_get_rootfh(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
2489 struct nfs_fsinfo
*info
)
2491 int minor_version
= server
->nfs_client
->cl_minorversion
;
2492 int status
= nfs4_lookup_root(server
, fhandle
, info
);
2493 if ((status
== -NFS4ERR_WRONGSEC
) && !(server
->flags
& NFS_MOUNT_SECFLAVOUR
))
2495 * A status of -NFS4ERR_WRONGSEC will be mapped to -EPERM
2496 * by nfs4_map_errors() as this function exits.
2498 status
= nfs_v4_minor_ops
[minor_version
]->find_root_sec(server
, fhandle
, info
);
2500 status
= nfs4_server_capabilities(server
, fhandle
);
2502 status
= nfs4_do_fsinfo(server
, fhandle
, info
);
2503 return nfs4_map_errors(status
);
2506 static int nfs4_proc_get_root(struct nfs_server
*server
, struct nfs_fh
*mntfh
,
2507 struct nfs_fsinfo
*info
)
2510 struct nfs_fattr
*fattr
= info
->fattr
;
2512 error
= nfs4_server_capabilities(server
, mntfh
);
2514 dprintk("nfs4_get_root: getcaps error = %d\n", -error
);
2518 error
= nfs4_proc_getattr(server
, mntfh
, fattr
);
2520 dprintk("nfs4_get_root: getattr error = %d\n", -error
);
2524 if (fattr
->valid
& NFS_ATTR_FATTR_FSID
&&
2525 !nfs_fsid_equal(&server
->fsid
, &fattr
->fsid
))
2526 memcpy(&server
->fsid
, &fattr
->fsid
, sizeof(server
->fsid
));
2532 * Get locations and (maybe) other attributes of a referral.
2533 * Note that we'll actually follow the referral later when
2534 * we detect fsid mismatch in inode revalidation
2536 static int nfs4_get_referral(struct rpc_clnt
*client
, struct inode
*dir
,
2537 const struct qstr
*name
, struct nfs_fattr
*fattr
,
2538 struct nfs_fh
*fhandle
)
2540 int status
= -ENOMEM
;
2541 struct page
*page
= NULL
;
2542 struct nfs4_fs_locations
*locations
= NULL
;
2544 page
= alloc_page(GFP_KERNEL
);
2547 locations
= kmalloc(sizeof(struct nfs4_fs_locations
), GFP_KERNEL
);
2548 if (locations
== NULL
)
2551 status
= nfs4_proc_fs_locations(client
, dir
, name
, locations
, page
);
2554 /* Make sure server returned a different fsid for the referral */
2555 if (nfs_fsid_equal(&NFS_SERVER(dir
)->fsid
, &locations
->fattr
.fsid
)) {
2556 dprintk("%s: server did not return a different fsid for"
2557 " a referral at %s\n", __func__
, name
->name
);
2561 /* Fixup attributes for the nfs_lookup() call to nfs_fhget() */
2562 nfs_fixup_referral_attributes(&locations
->fattr
);
2564 /* replace the lookup nfs_fattr with the locations nfs_fattr */
2565 memcpy(fattr
, &locations
->fattr
, sizeof(struct nfs_fattr
));
2566 memset(fhandle
, 0, sizeof(struct nfs_fh
));
2574 static int _nfs4_proc_getattr(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fattr
*fattr
)
2576 struct nfs4_getattr_arg args
= {
2578 .bitmask
= server
->attr_bitmask
,
2580 struct nfs4_getattr_res res
= {
2584 struct rpc_message msg
= {
2585 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GETATTR
],
2590 nfs_fattr_init(fattr
);
2591 return nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
2594 static int nfs4_proc_getattr(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fattr
*fattr
)
2596 struct nfs4_exception exception
= { };
2599 err
= nfs4_handle_exception(server
,
2600 _nfs4_proc_getattr(server
, fhandle
, fattr
),
2602 } while (exception
.retry
);
2607 * The file is not closed if it is opened due to the a request to change
2608 * the size of the file. The open call will not be needed once the
2609 * VFS layer lookup-intents are implemented.
2611 * Close is called when the inode is destroyed.
2612 * If we haven't opened the file for O_WRONLY, we
2613 * need to in the size_change case to obtain a stateid.
2616 * Because OPEN is always done by name in nfsv4, it is
2617 * possible that we opened a different file by the same
2618 * name. We can recognize this race condition, but we
2619 * can't do anything about it besides returning an error.
2621 * This will be fixed with VFS changes (lookup-intent).
2624 nfs4_proc_setattr(struct dentry
*dentry
, struct nfs_fattr
*fattr
,
2625 struct iattr
*sattr
)
2627 struct inode
*inode
= dentry
->d_inode
;
2628 struct rpc_cred
*cred
= NULL
;
2629 struct nfs4_state
*state
= NULL
;
2632 if (pnfs_ld_layoutret_on_setattr(inode
))
2633 pnfs_return_layout(inode
);
2635 nfs_fattr_init(fattr
);
2637 /* Deal with open(O_TRUNC) */
2638 if (sattr
->ia_valid
& ATTR_OPEN
)
2639 sattr
->ia_valid
&= ~(ATTR_MTIME
|ATTR_CTIME
|ATTR_OPEN
);
2641 /* Optimization: if the end result is no change, don't RPC */
2642 if ((sattr
->ia_valid
& ~(ATTR_FILE
)) == 0)
2645 /* Search for an existing open(O_WRITE) file */
2646 if (sattr
->ia_valid
& ATTR_FILE
) {
2647 struct nfs_open_context
*ctx
;
2649 ctx
= nfs_file_open_context(sattr
->ia_file
);
2656 status
= nfs4_do_setattr(inode
, cred
, fattr
, sattr
, state
);
2658 nfs_setattr_update_inode(inode
, sattr
);
2662 static int _nfs4_proc_lookup(struct rpc_clnt
*clnt
, struct inode
*dir
,
2663 const struct qstr
*name
, struct nfs_fh
*fhandle
,
2664 struct nfs_fattr
*fattr
)
2666 struct nfs_server
*server
= NFS_SERVER(dir
);
2668 struct nfs4_lookup_arg args
= {
2669 .bitmask
= server
->attr_bitmask
,
2670 .dir_fh
= NFS_FH(dir
),
2673 struct nfs4_lookup_res res
= {
2678 struct rpc_message msg
= {
2679 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOOKUP
],
2684 nfs_fattr_init(fattr
);
2686 dprintk("NFS call lookup %s\n", name
->name
);
2687 status
= nfs4_call_sync(clnt
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
2688 dprintk("NFS reply lookup: %d\n", status
);
2692 static void nfs_fixup_secinfo_attributes(struct nfs_fattr
*fattr
)
2694 fattr
->valid
|= NFS_ATTR_FATTR_TYPE
| NFS_ATTR_FATTR_MODE
|
2695 NFS_ATTR_FATTR_NLINK
| NFS_ATTR_FATTR_MOUNTPOINT
;
2696 fattr
->mode
= S_IFDIR
| S_IRUGO
| S_IXUGO
;
2700 static int nfs4_proc_lookup_common(struct rpc_clnt
**clnt
, struct inode
*dir
,
2701 struct qstr
*name
, struct nfs_fh
*fhandle
,
2702 struct nfs_fattr
*fattr
)
2704 struct nfs4_exception exception
= { };
2705 struct rpc_clnt
*client
= *clnt
;
2708 err
= _nfs4_proc_lookup(client
, dir
, name
, fhandle
, fattr
);
2710 case -NFS4ERR_BADNAME
:
2713 case -NFS4ERR_MOVED
:
2714 err
= nfs4_get_referral(client
, dir
, name
, fattr
, fhandle
);
2716 case -NFS4ERR_WRONGSEC
:
2718 if (client
!= *clnt
)
2721 client
= nfs4_create_sec_client(client
, dir
, name
);
2723 return PTR_ERR(client
);
2725 exception
.retry
= 1;
2728 err
= nfs4_handle_exception(NFS_SERVER(dir
), err
, &exception
);
2730 } while (exception
.retry
);
2735 else if (client
!= *clnt
)
2736 rpc_shutdown_client(client
);
2741 static int nfs4_proc_lookup(struct inode
*dir
, struct qstr
*name
,
2742 struct nfs_fh
*fhandle
, struct nfs_fattr
*fattr
)
2745 struct rpc_clnt
*client
= NFS_CLIENT(dir
);
2747 status
= nfs4_proc_lookup_common(&client
, dir
, name
, fhandle
, fattr
);
2748 if (client
!= NFS_CLIENT(dir
)) {
2749 rpc_shutdown_client(client
);
2750 nfs_fixup_secinfo_attributes(fattr
);
2756 nfs4_proc_lookup_mountpoint(struct inode
*dir
, struct qstr
*name
,
2757 struct nfs_fh
*fhandle
, struct nfs_fattr
*fattr
)
2760 struct rpc_clnt
*client
= rpc_clone_client(NFS_CLIENT(dir
));
2762 status
= nfs4_proc_lookup_common(&client
, dir
, name
, fhandle
, fattr
);
2764 rpc_shutdown_client(client
);
2765 return ERR_PTR(status
);
2770 static int _nfs4_proc_access(struct inode
*inode
, struct nfs_access_entry
*entry
)
2772 struct nfs_server
*server
= NFS_SERVER(inode
);
2773 struct nfs4_accessargs args
= {
2774 .fh
= NFS_FH(inode
),
2775 .bitmask
= server
->cache_consistency_bitmask
,
2777 struct nfs4_accessres res
= {
2780 struct rpc_message msg
= {
2781 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_ACCESS
],
2784 .rpc_cred
= entry
->cred
,
2786 int mode
= entry
->mask
;
2790 * Determine which access bits we want to ask for...
2792 if (mode
& MAY_READ
)
2793 args
.access
|= NFS4_ACCESS_READ
;
2794 if (S_ISDIR(inode
->i_mode
)) {
2795 if (mode
& MAY_WRITE
)
2796 args
.access
|= NFS4_ACCESS_MODIFY
| NFS4_ACCESS_EXTEND
| NFS4_ACCESS_DELETE
;
2797 if (mode
& MAY_EXEC
)
2798 args
.access
|= NFS4_ACCESS_LOOKUP
;
2800 if (mode
& MAY_WRITE
)
2801 args
.access
|= NFS4_ACCESS_MODIFY
| NFS4_ACCESS_EXTEND
;
2802 if (mode
& MAY_EXEC
)
2803 args
.access
|= NFS4_ACCESS_EXECUTE
;
2806 res
.fattr
= nfs_alloc_fattr();
2807 if (res
.fattr
== NULL
)
2810 status
= nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
2812 nfs_access_set_mask(entry
, res
.access
);
2813 nfs_refresh_inode(inode
, res
.fattr
);
2815 nfs_free_fattr(res
.fattr
);
2819 static int nfs4_proc_access(struct inode
*inode
, struct nfs_access_entry
*entry
)
2821 struct nfs4_exception exception
= { };
2824 err
= nfs4_handle_exception(NFS_SERVER(inode
),
2825 _nfs4_proc_access(inode
, entry
),
2827 } while (exception
.retry
);
2832 * TODO: For the time being, we don't try to get any attributes
2833 * along with any of the zero-copy operations READ, READDIR,
2836 * In the case of the first three, we want to put the GETATTR
2837 * after the read-type operation -- this is because it is hard
2838 * to predict the length of a GETATTR response in v4, and thus
2839 * align the READ data correctly. This means that the GETATTR
2840 * may end up partially falling into the page cache, and we should
2841 * shift it into the 'tail' of the xdr_buf before processing.
2842 * To do this efficiently, we need to know the total length
2843 * of data received, which doesn't seem to be available outside
2846 * In the case of WRITE, we also want to put the GETATTR after
2847 * the operation -- in this case because we want to make sure
2848 * we get the post-operation mtime and size.
2850 * Both of these changes to the XDR layer would in fact be quite
2851 * minor, but I decided to leave them for a subsequent patch.
2853 static int _nfs4_proc_readlink(struct inode
*inode
, struct page
*page
,
2854 unsigned int pgbase
, unsigned int pglen
)
2856 struct nfs4_readlink args
= {
2857 .fh
= NFS_FH(inode
),
2862 struct nfs4_readlink_res res
;
2863 struct rpc_message msg
= {
2864 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_READLINK
],
2869 return nfs4_call_sync(NFS_SERVER(inode
)->client
, NFS_SERVER(inode
), &msg
, &args
.seq_args
, &res
.seq_res
, 0);
2872 static int nfs4_proc_readlink(struct inode
*inode
, struct page
*page
,
2873 unsigned int pgbase
, unsigned int pglen
)
2875 struct nfs4_exception exception
= { };
2878 err
= nfs4_handle_exception(NFS_SERVER(inode
),
2879 _nfs4_proc_readlink(inode
, page
, pgbase
, pglen
),
2881 } while (exception
.retry
);
2886 * This is just for mknod. open(O_CREAT) will always do ->open_context().
2889 nfs4_proc_create(struct inode
*dir
, struct dentry
*dentry
, struct iattr
*sattr
,
2892 struct nfs_open_context
*ctx
;
2893 struct nfs4_state
*state
;
2896 ctx
= alloc_nfs_open_context(dentry
, FMODE_READ
);
2898 return PTR_ERR(ctx
);
2900 sattr
->ia_mode
&= ~current_umask();
2901 state
= nfs4_do_open(dir
, dentry
, ctx
->mode
,
2902 flags
, sattr
, ctx
->cred
,
2903 &ctx
->mdsthreshold
);
2905 if (IS_ERR(state
)) {
2906 status
= PTR_ERR(state
);
2909 d_add(dentry
, igrab(state
->inode
));
2910 nfs_set_verifier(dentry
, nfs_save_change_attribute(dir
));
2913 put_nfs_open_context(ctx
);
2917 static int _nfs4_proc_remove(struct inode
*dir
, struct qstr
*name
)
2919 struct nfs_server
*server
= NFS_SERVER(dir
);
2920 struct nfs_removeargs args
= {
2924 struct nfs_removeres res
= {
2927 struct rpc_message msg
= {
2928 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_REMOVE
],
2934 status
= nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 1);
2936 update_changeattr(dir
, &res
.cinfo
);
2940 static int nfs4_proc_remove(struct inode
*dir
, struct qstr
*name
)
2942 struct nfs4_exception exception
= { };
2945 err
= nfs4_handle_exception(NFS_SERVER(dir
),
2946 _nfs4_proc_remove(dir
, name
),
2948 } while (exception
.retry
);
2952 static void nfs4_proc_unlink_setup(struct rpc_message
*msg
, struct inode
*dir
)
2954 struct nfs_server
*server
= NFS_SERVER(dir
);
2955 struct nfs_removeargs
*args
= msg
->rpc_argp
;
2956 struct nfs_removeres
*res
= msg
->rpc_resp
;
2958 res
->server
= server
;
2959 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_REMOVE
];
2960 nfs41_init_sequence(&args
->seq_args
, &res
->seq_res
, 1);
2963 static void nfs4_proc_unlink_rpc_prepare(struct rpc_task
*task
, struct nfs_unlinkdata
*data
)
2965 nfs4_setup_sequence(NFS_SERVER(data
->dir
),
2966 &data
->args
.seq_args
,
2971 static int nfs4_proc_unlink_done(struct rpc_task
*task
, struct inode
*dir
)
2973 struct nfs_removeres
*res
= task
->tk_msg
.rpc_resp
;
2975 if (!nfs4_sequence_done(task
, &res
->seq_res
))
2977 if (nfs4_async_handle_error(task
, res
->server
, NULL
) == -EAGAIN
)
2979 update_changeattr(dir
, &res
->cinfo
);
2983 static void nfs4_proc_rename_setup(struct rpc_message
*msg
, struct inode
*dir
)
2985 struct nfs_server
*server
= NFS_SERVER(dir
);
2986 struct nfs_renameargs
*arg
= msg
->rpc_argp
;
2987 struct nfs_renameres
*res
= msg
->rpc_resp
;
2989 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RENAME
];
2990 res
->server
= server
;
2991 nfs41_init_sequence(&arg
->seq_args
, &res
->seq_res
, 1);
2994 static void nfs4_proc_rename_rpc_prepare(struct rpc_task
*task
, struct nfs_renamedata
*data
)
2996 nfs4_setup_sequence(NFS_SERVER(data
->old_dir
),
2997 &data
->args
.seq_args
,
3002 static int nfs4_proc_rename_done(struct rpc_task
*task
, struct inode
*old_dir
,
3003 struct inode
*new_dir
)
3005 struct nfs_renameres
*res
= task
->tk_msg
.rpc_resp
;
3007 if (!nfs4_sequence_done(task
, &res
->seq_res
))
3009 if (nfs4_async_handle_error(task
, res
->server
, NULL
) == -EAGAIN
)
3012 update_changeattr(old_dir
, &res
->old_cinfo
);
3013 update_changeattr(new_dir
, &res
->new_cinfo
);
3017 static int _nfs4_proc_rename(struct inode
*old_dir
, struct qstr
*old_name
,
3018 struct inode
*new_dir
, struct qstr
*new_name
)
3020 struct nfs_server
*server
= NFS_SERVER(old_dir
);
3021 struct nfs_renameargs arg
= {
3022 .old_dir
= NFS_FH(old_dir
),
3023 .new_dir
= NFS_FH(new_dir
),
3024 .old_name
= old_name
,
3025 .new_name
= new_name
,
3027 struct nfs_renameres res
= {
3030 struct rpc_message msg
= {
3031 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RENAME
],
3035 int status
= -ENOMEM
;
3037 status
= nfs4_call_sync(server
->client
, server
, &msg
, &arg
.seq_args
, &res
.seq_res
, 1);
3039 update_changeattr(old_dir
, &res
.old_cinfo
);
3040 update_changeattr(new_dir
, &res
.new_cinfo
);
3045 static int nfs4_proc_rename(struct inode
*old_dir
, struct qstr
*old_name
,
3046 struct inode
*new_dir
, struct qstr
*new_name
)
3048 struct nfs4_exception exception
= { };
3051 err
= nfs4_handle_exception(NFS_SERVER(old_dir
),
3052 _nfs4_proc_rename(old_dir
, old_name
,
3055 } while (exception
.retry
);
3059 static int _nfs4_proc_link(struct inode
*inode
, struct inode
*dir
, struct qstr
*name
)
3061 struct nfs_server
*server
= NFS_SERVER(inode
);
3062 struct nfs4_link_arg arg
= {
3063 .fh
= NFS_FH(inode
),
3064 .dir_fh
= NFS_FH(dir
),
3066 .bitmask
= server
->attr_bitmask
,
3068 struct nfs4_link_res res
= {
3071 struct rpc_message msg
= {
3072 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LINK
],
3076 int status
= -ENOMEM
;
3078 res
.fattr
= nfs_alloc_fattr();
3079 if (res
.fattr
== NULL
)
3082 status
= nfs4_call_sync(server
->client
, server
, &msg
, &arg
.seq_args
, &res
.seq_res
, 1);
3084 update_changeattr(dir
, &res
.cinfo
);
3085 nfs_post_op_update_inode(inode
, res
.fattr
);
3088 nfs_free_fattr(res
.fattr
);
3092 static int nfs4_proc_link(struct inode
*inode
, struct inode
*dir
, struct qstr
*name
)
3094 struct nfs4_exception exception
= { };
3097 err
= nfs4_handle_exception(NFS_SERVER(inode
),
3098 _nfs4_proc_link(inode
, dir
, name
),
3100 } while (exception
.retry
);
3104 struct nfs4_createdata
{
3105 struct rpc_message msg
;
3106 struct nfs4_create_arg arg
;
3107 struct nfs4_create_res res
;
3109 struct nfs_fattr fattr
;
3112 static struct nfs4_createdata
*nfs4_alloc_createdata(struct inode
*dir
,
3113 struct qstr
*name
, struct iattr
*sattr
, u32 ftype
)
3115 struct nfs4_createdata
*data
;
3117 data
= kzalloc(sizeof(*data
), GFP_KERNEL
);
3119 struct nfs_server
*server
= NFS_SERVER(dir
);
3121 data
->msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_CREATE
];
3122 data
->msg
.rpc_argp
= &data
->arg
;
3123 data
->msg
.rpc_resp
= &data
->res
;
3124 data
->arg
.dir_fh
= NFS_FH(dir
);
3125 data
->arg
.server
= server
;
3126 data
->arg
.name
= name
;
3127 data
->arg
.attrs
= sattr
;
3128 data
->arg
.ftype
= ftype
;
3129 data
->arg
.bitmask
= server
->attr_bitmask
;
3130 data
->res
.server
= server
;
3131 data
->res
.fh
= &data
->fh
;
3132 data
->res
.fattr
= &data
->fattr
;
3133 nfs_fattr_init(data
->res
.fattr
);
3138 static int nfs4_do_create(struct inode
*dir
, struct dentry
*dentry
, struct nfs4_createdata
*data
)
3140 int status
= nfs4_call_sync(NFS_SERVER(dir
)->client
, NFS_SERVER(dir
), &data
->msg
,
3141 &data
->arg
.seq_args
, &data
->res
.seq_res
, 1);
3143 update_changeattr(dir
, &data
->res
.dir_cinfo
);
3144 status
= nfs_instantiate(dentry
, data
->res
.fh
, data
->res
.fattr
);
3149 static void nfs4_free_createdata(struct nfs4_createdata
*data
)
3154 static int _nfs4_proc_symlink(struct inode
*dir
, struct dentry
*dentry
,
3155 struct page
*page
, unsigned int len
, struct iattr
*sattr
)
3157 struct nfs4_createdata
*data
;
3158 int status
= -ENAMETOOLONG
;
3160 if (len
> NFS4_MAXPATHLEN
)
3164 data
= nfs4_alloc_createdata(dir
, &dentry
->d_name
, sattr
, NF4LNK
);
3168 data
->msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SYMLINK
];
3169 data
->arg
.u
.symlink
.pages
= &page
;
3170 data
->arg
.u
.symlink
.len
= len
;
3172 status
= nfs4_do_create(dir
, dentry
, data
);
3174 nfs4_free_createdata(data
);
3179 static int nfs4_proc_symlink(struct inode
*dir
, struct dentry
*dentry
,
3180 struct page
*page
, unsigned int len
, struct iattr
*sattr
)
3182 struct nfs4_exception exception
= { };
3185 err
= nfs4_handle_exception(NFS_SERVER(dir
),
3186 _nfs4_proc_symlink(dir
, dentry
, page
,
3189 } while (exception
.retry
);
3193 static int _nfs4_proc_mkdir(struct inode
*dir
, struct dentry
*dentry
,
3194 struct iattr
*sattr
)
3196 struct nfs4_createdata
*data
;
3197 int status
= -ENOMEM
;
3199 data
= nfs4_alloc_createdata(dir
, &dentry
->d_name
, sattr
, NF4DIR
);
3203 status
= nfs4_do_create(dir
, dentry
, data
);
3205 nfs4_free_createdata(data
);
3210 static int nfs4_proc_mkdir(struct inode
*dir
, struct dentry
*dentry
,
3211 struct iattr
*sattr
)
3213 struct nfs4_exception exception
= { };
3216 sattr
->ia_mode
&= ~current_umask();
3218 err
= nfs4_handle_exception(NFS_SERVER(dir
),
3219 _nfs4_proc_mkdir(dir
, dentry
, sattr
),
3221 } while (exception
.retry
);
3225 static int _nfs4_proc_readdir(struct dentry
*dentry
, struct rpc_cred
*cred
,
3226 u64 cookie
, struct page
**pages
, unsigned int count
, int plus
)
3228 struct inode
*dir
= dentry
->d_inode
;
3229 struct nfs4_readdir_arg args
= {
3234 .bitmask
= NFS_SERVER(dentry
->d_inode
)->attr_bitmask
,
3237 struct nfs4_readdir_res res
;
3238 struct rpc_message msg
= {
3239 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_READDIR
],
3246 dprintk("%s: dentry = %s/%s, cookie = %Lu\n", __func__
,
3247 dentry
->d_parent
->d_name
.name
,
3248 dentry
->d_name
.name
,
3249 (unsigned long long)cookie
);
3250 nfs4_setup_readdir(cookie
, NFS_I(dir
)->cookieverf
, dentry
, &args
);
3251 res
.pgbase
= args
.pgbase
;
3252 status
= nfs4_call_sync(NFS_SERVER(dir
)->client
, NFS_SERVER(dir
), &msg
, &args
.seq_args
, &res
.seq_res
, 0);
3254 memcpy(NFS_I(dir
)->cookieverf
, res
.verifier
.data
, NFS4_VERIFIER_SIZE
);
3255 status
+= args
.pgbase
;
3258 nfs_invalidate_atime(dir
);
3260 dprintk("%s: returns %d\n", __func__
, status
);
3264 static int nfs4_proc_readdir(struct dentry
*dentry
, struct rpc_cred
*cred
,
3265 u64 cookie
, struct page
**pages
, unsigned int count
, int plus
)
3267 struct nfs4_exception exception
= { };
3270 err
= nfs4_handle_exception(NFS_SERVER(dentry
->d_inode
),
3271 _nfs4_proc_readdir(dentry
, cred
, cookie
,
3272 pages
, count
, plus
),
3274 } while (exception
.retry
);
3278 static int _nfs4_proc_mknod(struct inode
*dir
, struct dentry
*dentry
,
3279 struct iattr
*sattr
, dev_t rdev
)
3281 struct nfs4_createdata
*data
;
3282 int mode
= sattr
->ia_mode
;
3283 int status
= -ENOMEM
;
3285 data
= nfs4_alloc_createdata(dir
, &dentry
->d_name
, sattr
, NF4SOCK
);
3290 data
->arg
.ftype
= NF4FIFO
;
3291 else if (S_ISBLK(mode
)) {
3292 data
->arg
.ftype
= NF4BLK
;
3293 data
->arg
.u
.device
.specdata1
= MAJOR(rdev
);
3294 data
->arg
.u
.device
.specdata2
= MINOR(rdev
);
3296 else if (S_ISCHR(mode
)) {
3297 data
->arg
.ftype
= NF4CHR
;
3298 data
->arg
.u
.device
.specdata1
= MAJOR(rdev
);
3299 data
->arg
.u
.device
.specdata2
= MINOR(rdev
);
3300 } else if (!S_ISSOCK(mode
)) {
3305 status
= nfs4_do_create(dir
, dentry
, data
);
3307 nfs4_free_createdata(data
);
3312 static int nfs4_proc_mknod(struct inode
*dir
, struct dentry
*dentry
,
3313 struct iattr
*sattr
, dev_t rdev
)
3315 struct nfs4_exception exception
= { };
3318 sattr
->ia_mode
&= ~current_umask();
3320 err
= nfs4_handle_exception(NFS_SERVER(dir
),
3321 _nfs4_proc_mknod(dir
, dentry
, sattr
, rdev
),
3323 } while (exception
.retry
);
3327 static int _nfs4_proc_statfs(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
3328 struct nfs_fsstat
*fsstat
)
3330 struct nfs4_statfs_arg args
= {
3332 .bitmask
= server
->attr_bitmask
,
3334 struct nfs4_statfs_res res
= {
3337 struct rpc_message msg
= {
3338 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_STATFS
],
3343 nfs_fattr_init(fsstat
->fattr
);
3344 return nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
3347 static int nfs4_proc_statfs(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fsstat
*fsstat
)
3349 struct nfs4_exception exception
= { };
3352 err
= nfs4_handle_exception(server
,
3353 _nfs4_proc_statfs(server
, fhandle
, fsstat
),
3355 } while (exception
.retry
);
3359 static int _nfs4_do_fsinfo(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
3360 struct nfs_fsinfo
*fsinfo
)
3362 struct nfs4_fsinfo_arg args
= {
3364 .bitmask
= server
->attr_bitmask
,
3366 struct nfs4_fsinfo_res res
= {
3369 struct rpc_message msg
= {
3370 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_FSINFO
],
3375 return nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
3378 static int nfs4_do_fsinfo(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fsinfo
*fsinfo
)
3380 struct nfs4_exception exception
= { };
3384 err
= nfs4_handle_exception(server
,
3385 _nfs4_do_fsinfo(server
, fhandle
, fsinfo
),
3387 } while (exception
.retry
);
3391 static int nfs4_proc_fsinfo(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fsinfo
*fsinfo
)
3395 nfs_fattr_init(fsinfo
->fattr
);
3396 error
= nfs4_do_fsinfo(server
, fhandle
, fsinfo
);
3398 /* block layout checks this! */
3399 server
->pnfs_blksize
= fsinfo
->blksize
;
3400 set_pnfs_layoutdriver(server
, fhandle
, fsinfo
->layouttype
);
3406 static int _nfs4_proc_pathconf(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
3407 struct nfs_pathconf
*pathconf
)
3409 struct nfs4_pathconf_arg args
= {
3411 .bitmask
= server
->attr_bitmask
,
3413 struct nfs4_pathconf_res res
= {
3414 .pathconf
= pathconf
,
3416 struct rpc_message msg
= {
3417 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_PATHCONF
],
3422 /* None of the pathconf attributes are mandatory to implement */
3423 if ((args
.bitmask
[0] & nfs4_pathconf_bitmap
[0]) == 0) {
3424 memset(pathconf
, 0, sizeof(*pathconf
));
3428 nfs_fattr_init(pathconf
->fattr
);
3429 return nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
3432 static int nfs4_proc_pathconf(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
3433 struct nfs_pathconf
*pathconf
)
3435 struct nfs4_exception exception
= { };
3439 err
= nfs4_handle_exception(server
,
3440 _nfs4_proc_pathconf(server
, fhandle
, pathconf
),
3442 } while (exception
.retry
);
3446 void __nfs4_read_done_cb(struct nfs_read_data
*data
)
3448 nfs_invalidate_atime(data
->header
->inode
);
3451 static int nfs4_read_done_cb(struct rpc_task
*task
, struct nfs_read_data
*data
)
3453 struct nfs_server
*server
= NFS_SERVER(data
->header
->inode
);
3455 if (nfs4_async_handle_error(task
, server
, data
->args
.context
->state
) == -EAGAIN
) {
3456 rpc_restart_call_prepare(task
);
3460 __nfs4_read_done_cb(data
);
3461 if (task
->tk_status
> 0)
3462 renew_lease(server
, data
->timestamp
);
3466 static int nfs4_read_done(struct rpc_task
*task
, struct nfs_read_data
*data
)
3469 dprintk("--> %s\n", __func__
);
3471 if (!nfs4_sequence_done(task
, &data
->res
.seq_res
))
3474 return data
->read_done_cb
? data
->read_done_cb(task
, data
) :
3475 nfs4_read_done_cb(task
, data
);
3478 static void nfs4_proc_read_setup(struct nfs_read_data
*data
, struct rpc_message
*msg
)
3480 data
->timestamp
= jiffies
;
3481 data
->read_done_cb
= nfs4_read_done_cb
;
3482 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_READ
];
3483 nfs41_init_sequence(&data
->args
.seq_args
, &data
->res
.seq_res
, 0);
3486 static void nfs4_proc_read_rpc_prepare(struct rpc_task
*task
, struct nfs_read_data
*data
)
3488 nfs4_setup_sequence(NFS_SERVER(data
->header
->inode
),
3489 &data
->args
.seq_args
,
3494 static int nfs4_write_done_cb(struct rpc_task
*task
, struct nfs_write_data
*data
)
3496 struct inode
*inode
= data
->header
->inode
;
3498 if (nfs4_async_handle_error(task
, NFS_SERVER(inode
), data
->args
.context
->state
) == -EAGAIN
) {
3499 rpc_restart_call_prepare(task
);
3502 if (task
->tk_status
>= 0) {
3503 renew_lease(NFS_SERVER(inode
), data
->timestamp
);
3504 nfs_post_op_update_inode_force_wcc(inode
, &data
->fattr
);
3509 static int nfs4_write_done(struct rpc_task
*task
, struct nfs_write_data
*data
)
3511 if (!nfs4_sequence_done(task
, &data
->res
.seq_res
))
3513 return data
->write_done_cb
? data
->write_done_cb(task
, data
) :
3514 nfs4_write_done_cb(task
, data
);
3518 bool nfs4_write_need_cache_consistency_data(const struct nfs_write_data
*data
)
3520 const struct nfs_pgio_header
*hdr
= data
->header
;
3522 /* Don't request attributes for pNFS or O_DIRECT writes */
3523 if (data
->ds_clp
!= NULL
|| hdr
->dreq
!= NULL
)
3525 /* Otherwise, request attributes if and only if we don't hold
3528 return nfs4_have_delegation(hdr
->inode
, FMODE_READ
) == 0;
3531 static void nfs4_proc_write_setup(struct nfs_write_data
*data
, struct rpc_message
*msg
)
3533 struct nfs_server
*server
= NFS_SERVER(data
->header
->inode
);
3535 if (!nfs4_write_need_cache_consistency_data(data
)) {
3536 data
->args
.bitmask
= NULL
;
3537 data
->res
.fattr
= NULL
;
3539 data
->args
.bitmask
= server
->cache_consistency_bitmask
;
3541 if (!data
->write_done_cb
)
3542 data
->write_done_cb
= nfs4_write_done_cb
;
3543 data
->res
.server
= server
;
3544 data
->timestamp
= jiffies
;
3546 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_WRITE
];
3547 nfs41_init_sequence(&data
->args
.seq_args
, &data
->res
.seq_res
, 1);
3550 static void nfs4_proc_write_rpc_prepare(struct rpc_task
*task
, struct nfs_write_data
*data
)
3552 nfs4_setup_sequence(NFS_SERVER(data
->header
->inode
),
3553 &data
->args
.seq_args
,
3558 static void nfs4_proc_commit_rpc_prepare(struct rpc_task
*task
, struct nfs_commit_data
*data
)
3560 nfs4_setup_sequence(NFS_SERVER(data
->inode
),
3561 &data
->args
.seq_args
,
3566 static int nfs4_commit_done_cb(struct rpc_task
*task
, struct nfs_commit_data
*data
)
3568 struct inode
*inode
= data
->inode
;
3570 if (nfs4_async_handle_error(task
, NFS_SERVER(inode
), NULL
) == -EAGAIN
) {
3571 rpc_restart_call_prepare(task
);
3577 static int nfs4_commit_done(struct rpc_task
*task
, struct nfs_commit_data
*data
)
3579 if (!nfs4_sequence_done(task
, &data
->res
.seq_res
))
3581 return data
->commit_done_cb(task
, data
);
3584 static void nfs4_proc_commit_setup(struct nfs_commit_data
*data
, struct rpc_message
*msg
)
3586 struct nfs_server
*server
= NFS_SERVER(data
->inode
);
3588 if (data
->commit_done_cb
== NULL
)
3589 data
->commit_done_cb
= nfs4_commit_done_cb
;
3590 data
->res
.server
= server
;
3591 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_COMMIT
];
3592 nfs41_init_sequence(&data
->args
.seq_args
, &data
->res
.seq_res
, 1);
3595 struct nfs4_renewdata
{
3596 struct nfs_client
*client
;
3597 unsigned long timestamp
;
3601 * nfs4_proc_async_renew(): This is not one of the nfs_rpc_ops; it is a special
3602 * standalone procedure for queueing an asynchronous RENEW.
3604 static void nfs4_renew_release(void *calldata
)
3606 struct nfs4_renewdata
*data
= calldata
;
3607 struct nfs_client
*clp
= data
->client
;
3609 if (atomic_read(&clp
->cl_count
) > 1)
3610 nfs4_schedule_state_renewal(clp
);
3611 nfs_put_client(clp
);
3615 static void nfs4_renew_done(struct rpc_task
*task
, void *calldata
)
3617 struct nfs4_renewdata
*data
= calldata
;
3618 struct nfs_client
*clp
= data
->client
;
3619 unsigned long timestamp
= data
->timestamp
;
3621 if (task
->tk_status
< 0) {
3622 /* Unless we're shutting down, schedule state recovery! */
3623 if (test_bit(NFS_CS_RENEWD
, &clp
->cl_res_state
) == 0)
3625 if (task
->tk_status
!= NFS4ERR_CB_PATH_DOWN
) {
3626 nfs4_schedule_lease_recovery(clp
);
3629 nfs4_schedule_path_down_recovery(clp
);
3631 do_renew_lease(clp
, timestamp
);
3634 static const struct rpc_call_ops nfs4_renew_ops
= {
3635 .rpc_call_done
= nfs4_renew_done
,
3636 .rpc_release
= nfs4_renew_release
,
3639 static int nfs4_proc_async_renew(struct nfs_client
*clp
, struct rpc_cred
*cred
, unsigned renew_flags
)
3641 struct rpc_message msg
= {
3642 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RENEW
],
3646 struct nfs4_renewdata
*data
;
3648 if (renew_flags
== 0)
3650 if (!atomic_inc_not_zero(&clp
->cl_count
))
3652 data
= kmalloc(sizeof(*data
), GFP_NOFS
);
3656 data
->timestamp
= jiffies
;
3657 return rpc_call_async(clp
->cl_rpcclient
, &msg
, RPC_TASK_SOFT
,
3658 &nfs4_renew_ops
, data
);
3661 static int nfs4_proc_renew(struct nfs_client
*clp
, struct rpc_cred
*cred
)
3663 struct rpc_message msg
= {
3664 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RENEW
],
3668 unsigned long now
= jiffies
;
3671 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, 0);
3674 do_renew_lease(clp
, now
);
3678 static inline int nfs4_server_supports_acls(struct nfs_server
*server
)
3680 return (server
->caps
& NFS_CAP_ACLS
)
3681 && (server
->acl_bitmask
& ACL4_SUPPORT_ALLOW_ACL
)
3682 && (server
->acl_bitmask
& ACL4_SUPPORT_DENY_ACL
);
3685 /* Assuming that XATTR_SIZE_MAX is a multiple of PAGE_SIZE, and that
3686 * it's OK to put sizeof(void) * (XATTR_SIZE_MAX/PAGE_SIZE) bytes on
3689 #define NFS4ACL_MAXPAGES DIV_ROUND_UP(XATTR_SIZE_MAX, PAGE_SIZE)
3691 static int buf_to_pages_noslab(const void *buf
, size_t buflen
,
3692 struct page
**pages
, unsigned int *pgbase
)
3694 struct page
*newpage
, **spages
;
3700 len
= min_t(size_t, PAGE_SIZE
, buflen
);
3701 newpage
= alloc_page(GFP_KERNEL
);
3703 if (newpage
== NULL
)
3705 memcpy(page_address(newpage
), buf
, len
);
3710 } while (buflen
!= 0);
3716 __free_page(spages
[rc
-1]);
3720 struct nfs4_cached_acl
{
3726 static void nfs4_set_cached_acl(struct inode
*inode
, struct nfs4_cached_acl
*acl
)
3728 struct nfs_inode
*nfsi
= NFS_I(inode
);
3730 spin_lock(&inode
->i_lock
);
3731 kfree(nfsi
->nfs4_acl
);
3732 nfsi
->nfs4_acl
= acl
;
3733 spin_unlock(&inode
->i_lock
);
3736 static void nfs4_zap_acl_attr(struct inode
*inode
)
3738 nfs4_set_cached_acl(inode
, NULL
);
3741 static inline ssize_t
nfs4_read_cached_acl(struct inode
*inode
, char *buf
, size_t buflen
)
3743 struct nfs_inode
*nfsi
= NFS_I(inode
);
3744 struct nfs4_cached_acl
*acl
;
3747 spin_lock(&inode
->i_lock
);
3748 acl
= nfsi
->nfs4_acl
;
3751 if (buf
== NULL
) /* user is just asking for length */
3753 if (acl
->cached
== 0)
3755 ret
= -ERANGE
; /* see getxattr(2) man page */
3756 if (acl
->len
> buflen
)
3758 memcpy(buf
, acl
->data
, acl
->len
);
3762 spin_unlock(&inode
->i_lock
);
3766 static void nfs4_write_cached_acl(struct inode
*inode
, struct page
**pages
, size_t pgbase
, size_t acl_len
)
3768 struct nfs4_cached_acl
*acl
;
3769 size_t buflen
= sizeof(*acl
) + acl_len
;
3771 if (buflen
<= PAGE_SIZE
) {
3772 acl
= kmalloc(buflen
, GFP_KERNEL
);
3776 _copy_from_pages(acl
->data
, pages
, pgbase
, acl_len
);
3778 acl
= kmalloc(sizeof(*acl
), GFP_KERNEL
);
3785 nfs4_set_cached_acl(inode
, acl
);
3789 * The getxattr API returns the required buffer length when called with a
3790 * NULL buf. The NFSv4 acl tool then calls getxattr again after allocating
3791 * the required buf. On a NULL buf, we send a page of data to the server
3792 * guessing that the ACL request can be serviced by a page. If so, we cache
3793 * up to the page of ACL data, and the 2nd call to getxattr is serviced by
3794 * the cache. If not so, we throw away the page, and cache the required
3795 * length. The next getxattr call will then produce another round trip to
3796 * the server, this time with the input buf of the required size.
3798 static ssize_t
__nfs4_get_acl_uncached(struct inode
*inode
, void *buf
, size_t buflen
)
3800 struct page
*pages
[NFS4ACL_MAXPAGES
] = {NULL
, };
3801 struct nfs_getaclargs args
= {
3802 .fh
= NFS_FH(inode
),
3806 struct nfs_getaclres res
= {
3809 struct rpc_message msg
= {
3810 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GETACL
],
3814 unsigned int npages
= DIV_ROUND_UP(buflen
, PAGE_SIZE
);
3815 int ret
= -ENOMEM
, i
;
3817 /* As long as we're doing a round trip to the server anyway,
3818 * let's be prepared for a page of acl data. */
3821 if (npages
> ARRAY_SIZE(pages
))
3824 for (i
= 0; i
< npages
; i
++) {
3825 pages
[i
] = alloc_page(GFP_KERNEL
);
3830 /* for decoding across pages */
3831 res
.acl_scratch
= alloc_page(GFP_KERNEL
);
3832 if (!res
.acl_scratch
)
3835 args
.acl_len
= npages
* PAGE_SIZE
;
3836 args
.acl_pgbase
= 0;
3838 dprintk("%s buf %p buflen %zu npages %d args.acl_len %zu\n",
3839 __func__
, buf
, buflen
, npages
, args
.acl_len
);
3840 ret
= nfs4_call_sync(NFS_SERVER(inode
)->client
, NFS_SERVER(inode
),
3841 &msg
, &args
.seq_args
, &res
.seq_res
, 0);
3845 /* Handle the case where the passed-in buffer is too short */
3846 if (res
.acl_flags
& NFS4_ACL_TRUNC
) {
3847 /* Did the user only issue a request for the acl length? */
3853 nfs4_write_cached_acl(inode
, pages
, res
.acl_data_offset
, res
.acl_len
);
3855 if (res
.acl_len
> buflen
) {
3859 _copy_from_pages(buf
, pages
, res
.acl_data_offset
, res
.acl_len
);
3864 for (i
= 0; i
< npages
; i
++)
3866 __free_page(pages
[i
]);
3867 if (res
.acl_scratch
)
3868 __free_page(res
.acl_scratch
);
3872 static ssize_t
nfs4_get_acl_uncached(struct inode
*inode
, void *buf
, size_t buflen
)
3874 struct nfs4_exception exception
= { };
3877 ret
= __nfs4_get_acl_uncached(inode
, buf
, buflen
);
3880 ret
= nfs4_handle_exception(NFS_SERVER(inode
), ret
, &exception
);
3881 } while (exception
.retry
);
3885 static ssize_t
nfs4_proc_get_acl(struct inode
*inode
, void *buf
, size_t buflen
)
3887 struct nfs_server
*server
= NFS_SERVER(inode
);
3890 if (!nfs4_server_supports_acls(server
))
3892 ret
= nfs_revalidate_inode(server
, inode
);
3895 if (NFS_I(inode
)->cache_validity
& NFS_INO_INVALID_ACL
)
3896 nfs_zap_acl_cache(inode
);
3897 ret
= nfs4_read_cached_acl(inode
, buf
, buflen
);
3899 /* -ENOENT is returned if there is no ACL or if there is an ACL
3900 * but no cached acl data, just the acl length */
3902 return nfs4_get_acl_uncached(inode
, buf
, buflen
);
3905 static int __nfs4_proc_set_acl(struct inode
*inode
, const void *buf
, size_t buflen
)
3907 struct nfs_server
*server
= NFS_SERVER(inode
);
3908 struct page
*pages
[NFS4ACL_MAXPAGES
];
3909 struct nfs_setaclargs arg
= {
3910 .fh
= NFS_FH(inode
),
3914 struct nfs_setaclres res
;
3915 struct rpc_message msg
= {
3916 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETACL
],
3920 unsigned int npages
= DIV_ROUND_UP(buflen
, PAGE_SIZE
);
3923 if (!nfs4_server_supports_acls(server
))
3925 if (npages
> ARRAY_SIZE(pages
))
3927 i
= buf_to_pages_noslab(buf
, buflen
, arg
.acl_pages
, &arg
.acl_pgbase
);
3930 nfs4_inode_return_delegation(inode
);
3931 ret
= nfs4_call_sync(server
->client
, server
, &msg
, &arg
.seq_args
, &res
.seq_res
, 1);
3934 * Free each page after tx, so the only ref left is
3935 * held by the network stack
3938 put_page(pages
[i
-1]);
3941 * Acl update can result in inode attribute update.
3942 * so mark the attribute cache invalid.
3944 spin_lock(&inode
->i_lock
);
3945 NFS_I(inode
)->cache_validity
|= NFS_INO_INVALID_ATTR
;
3946 spin_unlock(&inode
->i_lock
);
3947 nfs_access_zap_cache(inode
);
3948 nfs_zap_acl_cache(inode
);
3952 static int nfs4_proc_set_acl(struct inode
*inode
, const void *buf
, size_t buflen
)
3954 struct nfs4_exception exception
= { };
3957 err
= nfs4_handle_exception(NFS_SERVER(inode
),
3958 __nfs4_proc_set_acl(inode
, buf
, buflen
),
3960 } while (exception
.retry
);
3965 nfs4_async_handle_error(struct rpc_task
*task
, const struct nfs_server
*server
, struct nfs4_state
*state
)
3967 struct nfs_client
*clp
= server
->nfs_client
;
3969 if (task
->tk_status
>= 0)
3971 switch(task
->tk_status
) {
3972 case -NFS4ERR_DELEG_REVOKED
:
3973 case -NFS4ERR_ADMIN_REVOKED
:
3974 case -NFS4ERR_BAD_STATEID
:
3977 nfs_remove_bad_delegation(state
->inode
);
3978 case -NFS4ERR_OPENMODE
:
3981 nfs4_schedule_stateid_recovery(server
, state
);
3982 goto wait_on_recovery
;
3983 case -NFS4ERR_EXPIRED
:
3985 nfs4_schedule_stateid_recovery(server
, state
);
3986 case -NFS4ERR_STALE_STATEID
:
3987 case -NFS4ERR_STALE_CLIENTID
:
3988 nfs4_schedule_lease_recovery(clp
);
3989 goto wait_on_recovery
;
3990 #if defined(CONFIG_NFS_V4_1)
3991 case -NFS4ERR_BADSESSION
:
3992 case -NFS4ERR_BADSLOT
:
3993 case -NFS4ERR_BAD_HIGH_SLOT
:
3994 case -NFS4ERR_DEADSESSION
:
3995 case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION
:
3996 case -NFS4ERR_SEQ_FALSE_RETRY
:
3997 case -NFS4ERR_SEQ_MISORDERED
:
3998 dprintk("%s ERROR %d, Reset session\n", __func__
,
4000 nfs4_schedule_session_recovery(clp
->cl_session
, task
->tk_status
);
4001 task
->tk_status
= 0;
4003 #endif /* CONFIG_NFS_V4_1 */
4004 case -NFS4ERR_DELAY
:
4005 nfs_inc_server_stats(server
, NFSIOS_DELAY
);
4006 case -NFS4ERR_GRACE
:
4007 rpc_delay(task
, NFS4_POLL_RETRY_MAX
);
4008 task
->tk_status
= 0;
4010 case -NFS4ERR_RETRY_UNCACHED_REP
:
4011 case -NFS4ERR_OLD_STATEID
:
4012 task
->tk_status
= 0;
4015 task
->tk_status
= nfs4_map_errors(task
->tk_status
);
4018 rpc_sleep_on(&clp
->cl_rpcwaitq
, task
, NULL
);
4019 if (test_bit(NFS4CLNT_MANAGER_RUNNING
, &clp
->cl_state
) == 0)
4020 rpc_wake_up_queued_task(&clp
->cl_rpcwaitq
, task
);
4021 task
->tk_status
= 0;
4025 static void nfs4_init_boot_verifier(const struct nfs_client
*clp
,
4026 nfs4_verifier
*bootverf
)
4030 if (test_bit(NFS4CLNT_PURGE_STATE
, &clp
->cl_state
)) {
4031 /* An impossible timestamp guarantees this value
4032 * will never match a generated boot time. */
4034 verf
[1] = (__be32
)(NSEC_PER_SEC
+ 1);
4036 struct nfs_net
*nn
= net_generic(clp
->cl_net
, nfs_net_id
);
4037 verf
[0] = (__be32
)nn
->boot_time
.tv_sec
;
4038 verf
[1] = (__be32
)nn
->boot_time
.tv_nsec
;
4040 memcpy(bootverf
->data
, verf
, sizeof(bootverf
->data
));
4044 nfs4_init_nonuniform_client_string(const struct nfs_client
*clp
,
4045 char *buf
, size_t len
)
4047 unsigned int result
;
4050 result
= scnprintf(buf
, len
, "Linux NFSv4.0 %s/%s %s",
4052 rpc_peeraddr2str(clp
->cl_rpcclient
,
4054 rpc_peeraddr2str(clp
->cl_rpcclient
,
4055 RPC_DISPLAY_PROTO
));
4061 nfs4_init_uniform_client_string(const struct nfs_client
*clp
,
4062 char *buf
, size_t len
)
4064 char *nodename
= clp
->cl_rpcclient
->cl_nodename
;
4066 if (nfs4_client_id_uniquifier
[0] != '\0')
4067 nodename
= nfs4_client_id_uniquifier
;
4068 return scnprintf(buf
, len
, "Linux NFSv%u.%u %s",
4069 clp
->rpc_ops
->version
, clp
->cl_minorversion
,
4074 * nfs4_proc_setclientid - Negotiate client ID
4075 * @clp: state data structure
4076 * @program: RPC program for NFSv4 callback service
4077 * @port: IP port number for NFS4 callback service
4078 * @cred: RPC credential to use for this call
4079 * @res: where to place the result
4081 * Returns zero, a negative errno, or a negative NFS4ERR status code.
4083 int nfs4_proc_setclientid(struct nfs_client
*clp
, u32 program
,
4084 unsigned short port
, struct rpc_cred
*cred
,
4085 struct nfs4_setclientid_res
*res
)
4087 nfs4_verifier sc_verifier
;
4088 struct nfs4_setclientid setclientid
= {
4089 .sc_verifier
= &sc_verifier
,
4091 .sc_cb_ident
= clp
->cl_cb_ident
,
4093 struct rpc_message msg
= {
4094 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETCLIENTID
],
4095 .rpc_argp
= &setclientid
,
4101 /* nfs_client_id4 */
4102 nfs4_init_boot_verifier(clp
, &sc_verifier
);
4103 if (test_bit(NFS_CS_MIGRATION
, &clp
->cl_flags
))
4104 setclientid
.sc_name_len
=
4105 nfs4_init_uniform_client_string(clp
,
4106 setclientid
.sc_name
,
4107 sizeof(setclientid
.sc_name
));
4109 setclientid
.sc_name_len
=
4110 nfs4_init_nonuniform_client_string(clp
,
4111 setclientid
.sc_name
,
4112 sizeof(setclientid
.sc_name
));
4115 setclientid
.sc_netid_len
= scnprintf(setclientid
.sc_netid
,
4116 sizeof(setclientid
.sc_netid
),
4117 rpc_peeraddr2str(clp
->cl_rpcclient
,
4118 RPC_DISPLAY_NETID
));
4120 setclientid
.sc_uaddr_len
= scnprintf(setclientid
.sc_uaddr
,
4121 sizeof(setclientid
.sc_uaddr
), "%s.%u.%u",
4122 clp
->cl_ipaddr
, port
>> 8, port
& 255);
4124 dprintk("NFS call setclientid auth=%s, '%.*s'\n",
4125 clp
->cl_rpcclient
->cl_auth
->au_ops
->au_name
,
4126 setclientid
.sc_name_len
, setclientid
.sc_name
);
4127 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
4128 dprintk("NFS reply setclientid: %d\n", status
);
4133 * nfs4_proc_setclientid_confirm - Confirm client ID
4134 * @clp: state data structure
4135 * @res: result of a previous SETCLIENTID
4136 * @cred: RPC credential to use for this call
4138 * Returns zero, a negative errno, or a negative NFS4ERR status code.
4140 int nfs4_proc_setclientid_confirm(struct nfs_client
*clp
,
4141 struct nfs4_setclientid_res
*arg
,
4142 struct rpc_cred
*cred
)
4144 struct nfs_fsinfo fsinfo
;
4145 struct rpc_message msg
= {
4146 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETCLIENTID_CONFIRM
],
4148 .rpc_resp
= &fsinfo
,
4154 dprintk("NFS call setclientid_confirm auth=%s, (client ID %llx)\n",
4155 clp
->cl_rpcclient
->cl_auth
->au_ops
->au_name
,
4158 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
4160 spin_lock(&clp
->cl_lock
);
4161 clp
->cl_lease_time
= fsinfo
.lease_time
* HZ
;
4162 clp
->cl_last_renewal
= now
;
4163 spin_unlock(&clp
->cl_lock
);
4165 dprintk("NFS reply setclientid_confirm: %d\n", status
);
4169 struct nfs4_delegreturndata
{
4170 struct nfs4_delegreturnargs args
;
4171 struct nfs4_delegreturnres res
;
4173 nfs4_stateid stateid
;
4174 unsigned long timestamp
;
4175 struct nfs_fattr fattr
;
4179 static void nfs4_delegreturn_done(struct rpc_task
*task
, void *calldata
)
4181 struct nfs4_delegreturndata
*data
= calldata
;
4183 if (!nfs4_sequence_done(task
, &data
->res
.seq_res
))
4186 switch (task
->tk_status
) {
4187 case -NFS4ERR_STALE_STATEID
:
4188 case -NFS4ERR_EXPIRED
:
4190 renew_lease(data
->res
.server
, data
->timestamp
);
4193 if (nfs4_async_handle_error(task
, data
->res
.server
, NULL
) ==
4195 rpc_restart_call_prepare(task
);
4199 data
->rpc_status
= task
->tk_status
;
4202 static void nfs4_delegreturn_release(void *calldata
)
4207 #if defined(CONFIG_NFS_V4_1)
4208 static void nfs4_delegreturn_prepare(struct rpc_task
*task
, void *data
)
4210 struct nfs4_delegreturndata
*d_data
;
4212 d_data
= (struct nfs4_delegreturndata
*)data
;
4214 nfs4_setup_sequence(d_data
->res
.server
,
4215 &d_data
->args
.seq_args
,
4216 &d_data
->res
.seq_res
,
4219 #endif /* CONFIG_NFS_V4_1 */
4221 static const struct rpc_call_ops nfs4_delegreturn_ops
= {
4222 #if defined(CONFIG_NFS_V4_1)
4223 .rpc_call_prepare
= nfs4_delegreturn_prepare
,
4224 #endif /* CONFIG_NFS_V4_1 */
4225 .rpc_call_done
= nfs4_delegreturn_done
,
4226 .rpc_release
= nfs4_delegreturn_release
,
4229 static int _nfs4_proc_delegreturn(struct inode
*inode
, struct rpc_cred
*cred
, const nfs4_stateid
*stateid
, int issync
)
4231 struct nfs4_delegreturndata
*data
;
4232 struct nfs_server
*server
= NFS_SERVER(inode
);
4233 struct rpc_task
*task
;
4234 struct rpc_message msg
= {
4235 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_DELEGRETURN
],
4238 struct rpc_task_setup task_setup_data
= {
4239 .rpc_client
= server
->client
,
4240 .rpc_message
= &msg
,
4241 .callback_ops
= &nfs4_delegreturn_ops
,
4242 .flags
= RPC_TASK_ASYNC
,
4246 data
= kzalloc(sizeof(*data
), GFP_NOFS
);
4249 nfs41_init_sequence(&data
->args
.seq_args
, &data
->res
.seq_res
, 1);
4250 data
->args
.fhandle
= &data
->fh
;
4251 data
->args
.stateid
= &data
->stateid
;
4252 data
->args
.bitmask
= server
->cache_consistency_bitmask
;
4253 nfs_copy_fh(&data
->fh
, NFS_FH(inode
));
4254 nfs4_stateid_copy(&data
->stateid
, stateid
);
4255 data
->res
.fattr
= &data
->fattr
;
4256 data
->res
.server
= server
;
4257 nfs_fattr_init(data
->res
.fattr
);
4258 data
->timestamp
= jiffies
;
4259 data
->rpc_status
= 0;
4261 task_setup_data
.callback_data
= data
;
4262 msg
.rpc_argp
= &data
->args
;
4263 msg
.rpc_resp
= &data
->res
;
4264 task
= rpc_run_task(&task_setup_data
);
4266 return PTR_ERR(task
);
4269 status
= nfs4_wait_for_completion_rpc_task(task
);
4272 status
= data
->rpc_status
;
4274 nfs_post_op_update_inode_force_wcc(inode
, &data
->fattr
);
4276 nfs_refresh_inode(inode
, &data
->fattr
);
4282 int nfs4_proc_delegreturn(struct inode
*inode
, struct rpc_cred
*cred
, const nfs4_stateid
*stateid
, int issync
)
4284 struct nfs_server
*server
= NFS_SERVER(inode
);
4285 struct nfs4_exception exception
= { };
4288 err
= _nfs4_proc_delegreturn(inode
, cred
, stateid
, issync
);
4290 case -NFS4ERR_STALE_STATEID
:
4291 case -NFS4ERR_EXPIRED
:
4295 err
= nfs4_handle_exception(server
, err
, &exception
);
4296 } while (exception
.retry
);
4300 #define NFS4_LOCK_MINTIMEOUT (1 * HZ)
4301 #define NFS4_LOCK_MAXTIMEOUT (30 * HZ)
4304 * sleep, with exponential backoff, and retry the LOCK operation.
4306 static unsigned long
4307 nfs4_set_lock_task_retry(unsigned long timeout
)
4309 freezable_schedule_timeout_killable(timeout
);
4311 if (timeout
> NFS4_LOCK_MAXTIMEOUT
)
4312 return NFS4_LOCK_MAXTIMEOUT
;
4316 static int _nfs4_proc_getlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
4318 struct inode
*inode
= state
->inode
;
4319 struct nfs_server
*server
= NFS_SERVER(inode
);
4320 struct nfs_client
*clp
= server
->nfs_client
;
4321 struct nfs_lockt_args arg
= {
4322 .fh
= NFS_FH(inode
),
4325 struct nfs_lockt_res res
= {
4328 struct rpc_message msg
= {
4329 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOCKT
],
4332 .rpc_cred
= state
->owner
->so_cred
,
4334 struct nfs4_lock_state
*lsp
;
4337 arg
.lock_owner
.clientid
= clp
->cl_clientid
;
4338 status
= nfs4_set_lock_state(state
, request
);
4341 lsp
= request
->fl_u
.nfs4_fl
.owner
;
4342 arg
.lock_owner
.id
= lsp
->ls_seqid
.owner_id
;
4343 arg
.lock_owner
.s_dev
= server
->s_dev
;
4344 status
= nfs4_call_sync(server
->client
, server
, &msg
, &arg
.seq_args
, &res
.seq_res
, 1);
4347 request
->fl_type
= F_UNLCK
;
4349 case -NFS4ERR_DENIED
:
4352 request
->fl_ops
->fl_release_private(request
);
4357 static int nfs4_proc_getlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
4359 struct nfs4_exception exception
= { };
4363 err
= nfs4_handle_exception(NFS_SERVER(state
->inode
),
4364 _nfs4_proc_getlk(state
, cmd
, request
),
4366 } while (exception
.retry
);
4370 static int do_vfs_lock(struct file
*file
, struct file_lock
*fl
)
4373 switch (fl
->fl_flags
& (FL_POSIX
|FL_FLOCK
)) {
4375 res
= posix_lock_file_wait(file
, fl
);
4378 res
= flock_lock_file_wait(file
, fl
);
4386 struct nfs4_unlockdata
{
4387 struct nfs_locku_args arg
;
4388 struct nfs_locku_res res
;
4389 struct nfs4_lock_state
*lsp
;
4390 struct nfs_open_context
*ctx
;
4391 struct file_lock fl
;
4392 const struct nfs_server
*server
;
4393 unsigned long timestamp
;
4396 static struct nfs4_unlockdata
*nfs4_alloc_unlockdata(struct file_lock
*fl
,
4397 struct nfs_open_context
*ctx
,
4398 struct nfs4_lock_state
*lsp
,
4399 struct nfs_seqid
*seqid
)
4401 struct nfs4_unlockdata
*p
;
4402 struct inode
*inode
= lsp
->ls_state
->inode
;
4404 p
= kzalloc(sizeof(*p
), GFP_NOFS
);
4407 p
->arg
.fh
= NFS_FH(inode
);
4409 p
->arg
.seqid
= seqid
;
4410 p
->res
.seqid
= seqid
;
4411 p
->arg
.stateid
= &lsp
->ls_stateid
;
4413 atomic_inc(&lsp
->ls_count
);
4414 /* Ensure we don't close file until we're done freeing locks! */
4415 p
->ctx
= get_nfs_open_context(ctx
);
4416 memcpy(&p
->fl
, fl
, sizeof(p
->fl
));
4417 p
->server
= NFS_SERVER(inode
);
4421 static void nfs4_locku_release_calldata(void *data
)
4423 struct nfs4_unlockdata
*calldata
= data
;
4424 nfs_free_seqid(calldata
->arg
.seqid
);
4425 nfs4_put_lock_state(calldata
->lsp
);
4426 put_nfs_open_context(calldata
->ctx
);
4430 static void nfs4_locku_done(struct rpc_task
*task
, void *data
)
4432 struct nfs4_unlockdata
*calldata
= data
;
4434 if (!nfs4_sequence_done(task
, &calldata
->res
.seq_res
))
4436 switch (task
->tk_status
) {
4438 nfs4_stateid_copy(&calldata
->lsp
->ls_stateid
,
4439 &calldata
->res
.stateid
);
4440 renew_lease(calldata
->server
, calldata
->timestamp
);
4442 case -NFS4ERR_BAD_STATEID
:
4443 case -NFS4ERR_OLD_STATEID
:
4444 case -NFS4ERR_STALE_STATEID
:
4445 case -NFS4ERR_EXPIRED
:
4448 if (nfs4_async_handle_error(task
, calldata
->server
, NULL
) == -EAGAIN
)
4449 rpc_restart_call_prepare(task
);
4451 nfs_release_seqid(calldata
->arg
.seqid
);
4454 static void nfs4_locku_prepare(struct rpc_task
*task
, void *data
)
4456 struct nfs4_unlockdata
*calldata
= data
;
4458 if (nfs_wait_on_sequence(calldata
->arg
.seqid
, task
) != 0)
4460 if (test_bit(NFS_LOCK_INITIALIZED
, &calldata
->lsp
->ls_flags
) == 0) {
4461 /* Note: exit _without_ running nfs4_locku_done */
4464 calldata
->timestamp
= jiffies
;
4465 if (nfs4_setup_sequence(calldata
->server
,
4466 &calldata
->arg
.seq_args
,
4467 &calldata
->res
.seq_res
,
4469 nfs_release_seqid(calldata
->arg
.seqid
);
4472 task
->tk_action
= NULL
;
4474 nfs4_sequence_done(task
, &calldata
->res
.seq_res
);
4477 static const struct rpc_call_ops nfs4_locku_ops
= {
4478 .rpc_call_prepare
= nfs4_locku_prepare
,
4479 .rpc_call_done
= nfs4_locku_done
,
4480 .rpc_release
= nfs4_locku_release_calldata
,
4483 static struct rpc_task
*nfs4_do_unlck(struct file_lock
*fl
,
4484 struct nfs_open_context
*ctx
,
4485 struct nfs4_lock_state
*lsp
,
4486 struct nfs_seqid
*seqid
)
4488 struct nfs4_unlockdata
*data
;
4489 struct rpc_message msg
= {
4490 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOCKU
],
4491 .rpc_cred
= ctx
->cred
,
4493 struct rpc_task_setup task_setup_data
= {
4494 .rpc_client
= NFS_CLIENT(lsp
->ls_state
->inode
),
4495 .rpc_message
= &msg
,
4496 .callback_ops
= &nfs4_locku_ops
,
4497 .workqueue
= nfsiod_workqueue
,
4498 .flags
= RPC_TASK_ASYNC
,
4501 /* Ensure this is an unlock - when canceling a lock, the
4502 * canceled lock is passed in, and it won't be an unlock.
4504 fl
->fl_type
= F_UNLCK
;
4506 data
= nfs4_alloc_unlockdata(fl
, ctx
, lsp
, seqid
);
4508 nfs_free_seqid(seqid
);
4509 return ERR_PTR(-ENOMEM
);
4512 nfs41_init_sequence(&data
->arg
.seq_args
, &data
->res
.seq_res
, 1);
4513 msg
.rpc_argp
= &data
->arg
;
4514 msg
.rpc_resp
= &data
->res
;
4515 task_setup_data
.callback_data
= data
;
4516 return rpc_run_task(&task_setup_data
);
4519 static int nfs4_proc_unlck(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
4521 struct inode
*inode
= state
->inode
;
4522 struct nfs4_state_owner
*sp
= state
->owner
;
4523 struct nfs_inode
*nfsi
= NFS_I(inode
);
4524 struct nfs_seqid
*seqid
;
4525 struct nfs4_lock_state
*lsp
;
4526 struct rpc_task
*task
;
4528 unsigned char fl_flags
= request
->fl_flags
;
4530 status
= nfs4_set_lock_state(state
, request
);
4531 /* Unlock _before_ we do the RPC call */
4532 request
->fl_flags
|= FL_EXISTS
;
4533 /* Exclude nfs_delegation_claim_locks() */
4534 mutex_lock(&sp
->so_delegreturn_mutex
);
4535 /* Exclude nfs4_reclaim_open_stateid() - note nesting! */
4536 down_read(&nfsi
->rwsem
);
4537 if (do_vfs_lock(request
->fl_file
, request
) == -ENOENT
) {
4538 up_read(&nfsi
->rwsem
);
4539 mutex_unlock(&sp
->so_delegreturn_mutex
);
4542 up_read(&nfsi
->rwsem
);
4543 mutex_unlock(&sp
->so_delegreturn_mutex
);
4546 /* Is this a delegated lock? */
4547 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
))
4549 lsp
= request
->fl_u
.nfs4_fl
.owner
;
4550 seqid
= nfs_alloc_seqid(&lsp
->ls_seqid
, GFP_KERNEL
);
4554 task
= nfs4_do_unlck(request
, nfs_file_open_context(request
->fl_file
), lsp
, seqid
);
4555 status
= PTR_ERR(task
);
4558 status
= nfs4_wait_for_completion_rpc_task(task
);
4561 request
->fl_flags
= fl_flags
;
4565 struct nfs4_lockdata
{
4566 struct nfs_lock_args arg
;
4567 struct nfs_lock_res res
;
4568 struct nfs4_lock_state
*lsp
;
4569 struct nfs_open_context
*ctx
;
4570 struct file_lock fl
;
4571 unsigned long timestamp
;
4574 struct nfs_server
*server
;
4577 static struct nfs4_lockdata
*nfs4_alloc_lockdata(struct file_lock
*fl
,
4578 struct nfs_open_context
*ctx
, struct nfs4_lock_state
*lsp
,
4581 struct nfs4_lockdata
*p
;
4582 struct inode
*inode
= lsp
->ls_state
->inode
;
4583 struct nfs_server
*server
= NFS_SERVER(inode
);
4585 p
= kzalloc(sizeof(*p
), gfp_mask
);
4589 p
->arg
.fh
= NFS_FH(inode
);
4591 p
->arg
.open_seqid
= nfs_alloc_seqid(&lsp
->ls_state
->owner
->so_seqid
, gfp_mask
);
4592 if (p
->arg
.open_seqid
== NULL
)
4594 p
->arg
.lock_seqid
= nfs_alloc_seqid(&lsp
->ls_seqid
, gfp_mask
);
4595 if (p
->arg
.lock_seqid
== NULL
)
4596 goto out_free_seqid
;
4597 p
->arg
.lock_stateid
= &lsp
->ls_stateid
;
4598 p
->arg
.lock_owner
.clientid
= server
->nfs_client
->cl_clientid
;
4599 p
->arg
.lock_owner
.id
= lsp
->ls_seqid
.owner_id
;
4600 p
->arg
.lock_owner
.s_dev
= server
->s_dev
;
4601 p
->res
.lock_seqid
= p
->arg
.lock_seqid
;
4604 atomic_inc(&lsp
->ls_count
);
4605 p
->ctx
= get_nfs_open_context(ctx
);
4606 memcpy(&p
->fl
, fl
, sizeof(p
->fl
));
4609 nfs_free_seqid(p
->arg
.open_seqid
);
4615 static void nfs4_lock_prepare(struct rpc_task
*task
, void *calldata
)
4617 struct nfs4_lockdata
*data
= calldata
;
4618 struct nfs4_state
*state
= data
->lsp
->ls_state
;
4620 dprintk("%s: begin!\n", __func__
);
4621 if (nfs_wait_on_sequence(data
->arg
.lock_seqid
, task
) != 0)
4623 /* Do we need to do an open_to_lock_owner? */
4624 if (!(data
->arg
.lock_seqid
->sequence
->flags
& NFS_SEQID_CONFIRMED
)) {
4625 if (nfs_wait_on_sequence(data
->arg
.open_seqid
, task
) != 0) {
4626 goto out_release_lock_seqid
;
4628 data
->arg
.open_stateid
= &state
->stateid
;
4629 data
->arg
.new_lock_owner
= 1;
4630 data
->res
.open_seqid
= data
->arg
.open_seqid
;
4632 data
->arg
.new_lock_owner
= 0;
4633 data
->timestamp
= jiffies
;
4634 if (nfs4_setup_sequence(data
->server
,
4635 &data
->arg
.seq_args
,
4639 nfs_release_seqid(data
->arg
.open_seqid
);
4640 out_release_lock_seqid
:
4641 nfs_release_seqid(data
->arg
.lock_seqid
);
4643 nfs4_sequence_done(task
, &data
->res
.seq_res
);
4644 dprintk("%s: done!, ret = %d\n", __func__
, data
->rpc_status
);
4647 static void nfs4_lock_done(struct rpc_task
*task
, void *calldata
)
4649 struct nfs4_lockdata
*data
= calldata
;
4651 dprintk("%s: begin!\n", __func__
);
4653 if (!nfs4_sequence_done(task
, &data
->res
.seq_res
))
4656 data
->rpc_status
= task
->tk_status
;
4657 if (data
->arg
.new_lock_owner
!= 0) {
4658 if (data
->rpc_status
== 0)
4659 nfs_confirm_seqid(&data
->lsp
->ls_seqid
, 0);
4663 if (data
->rpc_status
== 0) {
4664 nfs4_stateid_copy(&data
->lsp
->ls_stateid
, &data
->res
.stateid
);
4665 set_bit(NFS_LOCK_INITIALIZED
, &data
->lsp
->ls_flags
);
4666 renew_lease(NFS_SERVER(data
->ctx
->dentry
->d_inode
), data
->timestamp
);
4669 dprintk("%s: done, ret = %d!\n", __func__
, data
->rpc_status
);
4672 static void nfs4_lock_release(void *calldata
)
4674 struct nfs4_lockdata
*data
= calldata
;
4676 dprintk("%s: begin!\n", __func__
);
4677 nfs_free_seqid(data
->arg
.open_seqid
);
4678 if (data
->cancelled
!= 0) {
4679 struct rpc_task
*task
;
4680 task
= nfs4_do_unlck(&data
->fl
, data
->ctx
, data
->lsp
,
4681 data
->arg
.lock_seqid
);
4683 rpc_put_task_async(task
);
4684 dprintk("%s: cancelling lock!\n", __func__
);
4686 nfs_free_seqid(data
->arg
.lock_seqid
);
4687 nfs4_put_lock_state(data
->lsp
);
4688 put_nfs_open_context(data
->ctx
);
4690 dprintk("%s: done!\n", __func__
);
4693 static const struct rpc_call_ops nfs4_lock_ops
= {
4694 .rpc_call_prepare
= nfs4_lock_prepare
,
4695 .rpc_call_done
= nfs4_lock_done
,
4696 .rpc_release
= nfs4_lock_release
,
4699 static void nfs4_handle_setlk_error(struct nfs_server
*server
, struct nfs4_lock_state
*lsp
, int new_lock_owner
, int error
)
4702 case -NFS4ERR_ADMIN_REVOKED
:
4703 case -NFS4ERR_BAD_STATEID
:
4704 lsp
->ls_seqid
.flags
&= ~NFS_SEQID_CONFIRMED
;
4705 if (new_lock_owner
!= 0 ||
4706 test_bit(NFS_LOCK_INITIALIZED
, &lsp
->ls_flags
) != 0)
4707 nfs4_schedule_stateid_recovery(server
, lsp
->ls_state
);
4709 case -NFS4ERR_STALE_STATEID
:
4710 lsp
->ls_seqid
.flags
&= ~NFS_SEQID_CONFIRMED
;
4711 case -NFS4ERR_EXPIRED
:
4712 nfs4_schedule_lease_recovery(server
->nfs_client
);
4716 static int _nfs4_do_setlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*fl
, int recovery_type
)
4718 struct nfs4_lockdata
*data
;
4719 struct rpc_task
*task
;
4720 struct rpc_message msg
= {
4721 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOCK
],
4722 .rpc_cred
= state
->owner
->so_cred
,
4724 struct rpc_task_setup task_setup_data
= {
4725 .rpc_client
= NFS_CLIENT(state
->inode
),
4726 .rpc_message
= &msg
,
4727 .callback_ops
= &nfs4_lock_ops
,
4728 .workqueue
= nfsiod_workqueue
,
4729 .flags
= RPC_TASK_ASYNC
,
4733 dprintk("%s: begin!\n", __func__
);
4734 data
= nfs4_alloc_lockdata(fl
, nfs_file_open_context(fl
->fl_file
),
4735 fl
->fl_u
.nfs4_fl
.owner
,
4736 recovery_type
== NFS_LOCK_NEW
? GFP_KERNEL
: GFP_NOFS
);
4740 data
->arg
.block
= 1;
4741 nfs41_init_sequence(&data
->arg
.seq_args
, &data
->res
.seq_res
, 1);
4742 msg
.rpc_argp
= &data
->arg
;
4743 msg
.rpc_resp
= &data
->res
;
4744 task_setup_data
.callback_data
= data
;
4745 if (recovery_type
> NFS_LOCK_NEW
) {
4746 if (recovery_type
== NFS_LOCK_RECLAIM
)
4747 data
->arg
.reclaim
= NFS_LOCK_RECLAIM
;
4748 nfs4_set_sequence_privileged(&data
->arg
.seq_args
);
4750 task
= rpc_run_task(&task_setup_data
);
4752 return PTR_ERR(task
);
4753 ret
= nfs4_wait_for_completion_rpc_task(task
);
4755 ret
= data
->rpc_status
;
4757 nfs4_handle_setlk_error(data
->server
, data
->lsp
,
4758 data
->arg
.new_lock_owner
, ret
);
4760 data
->cancelled
= 1;
4762 dprintk("%s: done, ret = %d!\n", __func__
, ret
);
4766 static int nfs4_lock_reclaim(struct nfs4_state
*state
, struct file_lock
*request
)
4768 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
4769 struct nfs4_exception exception
= {
4770 .inode
= state
->inode
,
4775 /* Cache the lock if possible... */
4776 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) != 0)
4778 err
= _nfs4_do_setlk(state
, F_SETLK
, request
, NFS_LOCK_RECLAIM
);
4779 if (err
!= -NFS4ERR_DELAY
)
4781 nfs4_handle_exception(server
, err
, &exception
);
4782 } while (exception
.retry
);
4786 static int nfs4_lock_expired(struct nfs4_state
*state
, struct file_lock
*request
)
4788 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
4789 struct nfs4_exception exception
= {
4790 .inode
= state
->inode
,
4794 err
= nfs4_set_lock_state(state
, request
);
4798 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) != 0)
4800 err
= _nfs4_do_setlk(state
, F_SETLK
, request
, NFS_LOCK_EXPIRED
);
4804 case -NFS4ERR_GRACE
:
4805 case -NFS4ERR_DELAY
:
4806 nfs4_handle_exception(server
, err
, &exception
);
4809 } while (exception
.retry
);
4814 #if defined(CONFIG_NFS_V4_1)
4816 * nfs41_check_expired_locks - possibly free a lock stateid
4818 * @state: NFSv4 state for an inode
4820 * Returns NFS_OK if recovery for this stateid is now finished.
4821 * Otherwise a negative NFS4ERR value is returned.
4823 static int nfs41_check_expired_locks(struct nfs4_state
*state
)
4825 int status
, ret
= -NFS4ERR_BAD_STATEID
;
4826 struct nfs4_lock_state
*lsp
;
4827 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
4829 list_for_each_entry(lsp
, &state
->lock_states
, ls_locks
) {
4830 if (test_bit(NFS_LOCK_INITIALIZED
, &lsp
->ls_flags
)) {
4831 status
= nfs41_test_stateid(server
, &lsp
->ls_stateid
);
4832 if (status
!= NFS_OK
) {
4833 /* Free the stateid unless the server
4834 * informs us the stateid is unrecognized. */
4835 if (status
!= -NFS4ERR_BAD_STATEID
)
4836 nfs41_free_stateid(server
,
4838 clear_bit(NFS_LOCK_INITIALIZED
, &lsp
->ls_flags
);
4847 static int nfs41_lock_expired(struct nfs4_state
*state
, struct file_lock
*request
)
4849 int status
= NFS_OK
;
4851 if (test_bit(LK_STATE_IN_USE
, &state
->flags
))
4852 status
= nfs41_check_expired_locks(state
);
4853 if (status
!= NFS_OK
)
4854 status
= nfs4_lock_expired(state
, request
);
4859 static int _nfs4_proc_setlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
4861 struct nfs4_state_owner
*sp
= state
->owner
;
4862 struct nfs_inode
*nfsi
= NFS_I(state
->inode
);
4863 unsigned char fl_flags
= request
->fl_flags
;
4865 int status
= -ENOLCK
;
4867 if ((fl_flags
& FL_POSIX
) &&
4868 !test_bit(NFS_STATE_POSIX_LOCKS
, &state
->flags
))
4870 /* Is this a delegated open? */
4871 status
= nfs4_set_lock_state(state
, request
);
4874 request
->fl_flags
|= FL_ACCESS
;
4875 status
= do_vfs_lock(request
->fl_file
, request
);
4878 down_read(&nfsi
->rwsem
);
4879 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
)) {
4880 /* Yes: cache locks! */
4881 /* ...but avoid races with delegation recall... */
4882 request
->fl_flags
= fl_flags
& ~FL_SLEEP
;
4883 status
= do_vfs_lock(request
->fl_file
, request
);
4886 seq
= raw_seqcount_begin(&sp
->so_reclaim_seqcount
);
4887 up_read(&nfsi
->rwsem
);
4888 status
= _nfs4_do_setlk(state
, cmd
, request
, NFS_LOCK_NEW
);
4891 down_read(&nfsi
->rwsem
);
4892 if (read_seqcount_retry(&sp
->so_reclaim_seqcount
, seq
)) {
4893 status
= -NFS4ERR_DELAY
;
4896 /* Note: we always want to sleep here! */
4897 request
->fl_flags
= fl_flags
| FL_SLEEP
;
4898 if (do_vfs_lock(request
->fl_file
, request
) < 0)
4899 printk(KERN_WARNING
"NFS: %s: VFS is out of sync with lock "
4900 "manager!\n", __func__
);
4902 up_read(&nfsi
->rwsem
);
4904 request
->fl_flags
= fl_flags
;
4908 static int nfs4_proc_setlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
4910 struct nfs4_exception exception
= {
4912 .inode
= state
->inode
,
4917 err
= _nfs4_proc_setlk(state
, cmd
, request
);
4918 if (err
== -NFS4ERR_DENIED
)
4920 err
= nfs4_handle_exception(NFS_SERVER(state
->inode
),
4922 } while (exception
.retry
);
4927 nfs4_proc_lock(struct file
*filp
, int cmd
, struct file_lock
*request
)
4929 struct nfs_open_context
*ctx
;
4930 struct nfs4_state
*state
;
4931 unsigned long timeout
= NFS4_LOCK_MINTIMEOUT
;
4934 /* verify open state */
4935 ctx
= nfs_file_open_context(filp
);
4938 if (request
->fl_start
< 0 || request
->fl_end
< 0)
4941 if (IS_GETLK(cmd
)) {
4943 return nfs4_proc_getlk(state
, F_GETLK
, request
);
4947 if (!(IS_SETLK(cmd
) || IS_SETLKW(cmd
)))
4950 if (request
->fl_type
== F_UNLCK
) {
4952 return nfs4_proc_unlck(state
, cmd
, request
);
4959 * Don't rely on the VFS having checked the file open mode,
4960 * since it won't do this for flock() locks.
4962 switch (request
->fl_type
) {
4964 if (!(filp
->f_mode
& FMODE_READ
))
4968 if (!(filp
->f_mode
& FMODE_WRITE
))
4973 status
= nfs4_proc_setlk(state
, cmd
, request
);
4974 if ((status
!= -EAGAIN
) || IS_SETLK(cmd
))
4976 timeout
= nfs4_set_lock_task_retry(timeout
);
4977 status
= -ERESTARTSYS
;
4980 } while(status
< 0);
4984 int nfs4_lock_delegation_recall(struct nfs4_state
*state
, struct file_lock
*fl
)
4986 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
4987 struct nfs4_exception exception
= { };
4990 err
= nfs4_set_lock_state(state
, fl
);
4994 err
= _nfs4_do_setlk(state
, F_SETLK
, fl
, NFS_LOCK_NEW
);
4997 printk(KERN_ERR
"NFS: %s: unhandled error "
4998 "%d.\n", __func__
, err
);
5002 case -NFS4ERR_STALE_CLIENTID
:
5003 case -NFS4ERR_STALE_STATEID
:
5004 set_bit(NFS_DELEGATED_STATE
, &state
->flags
);
5005 case -NFS4ERR_EXPIRED
:
5006 nfs4_schedule_lease_recovery(server
->nfs_client
);
5009 case -NFS4ERR_BADSESSION
:
5010 case -NFS4ERR_BADSLOT
:
5011 case -NFS4ERR_BAD_HIGH_SLOT
:
5012 case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION
:
5013 case -NFS4ERR_DEADSESSION
:
5014 set_bit(NFS_DELEGATED_STATE
, &state
->flags
);
5015 nfs4_schedule_session_recovery(server
->nfs_client
->cl_session
, err
);
5018 case -NFS4ERR_DELEG_REVOKED
:
5019 case -NFS4ERR_ADMIN_REVOKED
:
5020 case -NFS4ERR_BAD_STATEID
:
5021 case -NFS4ERR_OPENMODE
:
5022 nfs4_schedule_stateid_recovery(server
, state
);
5026 case -NFS4ERR_DENIED
:
5027 /* kill_proc(fl->fl_pid, SIGLOST, 1); */
5031 set_bit(NFS_DELEGATED_STATE
, &state
->flags
);
5032 err
= nfs4_handle_exception(server
, err
, &exception
);
5033 } while (exception
.retry
);
5038 struct nfs_release_lockowner_data
{
5039 struct nfs4_lock_state
*lsp
;
5040 struct nfs_server
*server
;
5041 struct nfs_release_lockowner_args args
;
5044 static void nfs4_release_lockowner_release(void *calldata
)
5046 struct nfs_release_lockowner_data
*data
= calldata
;
5047 nfs4_free_lock_state(data
->server
, data
->lsp
);
5051 static const struct rpc_call_ops nfs4_release_lockowner_ops
= {
5052 .rpc_release
= nfs4_release_lockowner_release
,
5055 int nfs4_release_lockowner(struct nfs4_lock_state
*lsp
)
5057 struct nfs_server
*server
= lsp
->ls_state
->owner
->so_server
;
5058 struct nfs_release_lockowner_data
*data
;
5059 struct rpc_message msg
= {
5060 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RELEASE_LOCKOWNER
],
5063 if (server
->nfs_client
->cl_mvops
->minor_version
!= 0)
5065 data
= kmalloc(sizeof(*data
), GFP_NOFS
);
5069 data
->server
= server
;
5070 data
->args
.lock_owner
.clientid
= server
->nfs_client
->cl_clientid
;
5071 data
->args
.lock_owner
.id
= lsp
->ls_seqid
.owner_id
;
5072 data
->args
.lock_owner
.s_dev
= server
->s_dev
;
5073 msg
.rpc_argp
= &data
->args
;
5074 rpc_call_async(server
->client
, &msg
, 0, &nfs4_release_lockowner_ops
, data
);
5078 #define XATTR_NAME_NFSV4_ACL "system.nfs4_acl"
5080 static int nfs4_xattr_set_nfs4_acl(struct dentry
*dentry
, const char *key
,
5081 const void *buf
, size_t buflen
,
5082 int flags
, int type
)
5084 if (strcmp(key
, "") != 0)
5087 return nfs4_proc_set_acl(dentry
->d_inode
, buf
, buflen
);
5090 static int nfs4_xattr_get_nfs4_acl(struct dentry
*dentry
, const char *key
,
5091 void *buf
, size_t buflen
, int type
)
5093 if (strcmp(key
, "") != 0)
5096 return nfs4_proc_get_acl(dentry
->d_inode
, buf
, buflen
);
5099 static size_t nfs4_xattr_list_nfs4_acl(struct dentry
*dentry
, char *list
,
5100 size_t list_len
, const char *name
,
5101 size_t name_len
, int type
)
5103 size_t len
= sizeof(XATTR_NAME_NFSV4_ACL
);
5105 if (!nfs4_server_supports_acls(NFS_SERVER(dentry
->d_inode
)))
5108 if (list
&& len
<= list_len
)
5109 memcpy(list
, XATTR_NAME_NFSV4_ACL
, len
);
5114 * nfs_fhget will use either the mounted_on_fileid or the fileid
5116 static void nfs_fixup_referral_attributes(struct nfs_fattr
*fattr
)
5118 if (!(((fattr
->valid
& NFS_ATTR_FATTR_MOUNTED_ON_FILEID
) ||
5119 (fattr
->valid
& NFS_ATTR_FATTR_FILEID
)) &&
5120 (fattr
->valid
& NFS_ATTR_FATTR_FSID
) &&
5121 (fattr
->valid
& NFS_ATTR_FATTR_V4_LOCATIONS
)))
5124 fattr
->valid
|= NFS_ATTR_FATTR_TYPE
| NFS_ATTR_FATTR_MODE
|
5125 NFS_ATTR_FATTR_NLINK
| NFS_ATTR_FATTR_V4_REFERRAL
;
5126 fattr
->mode
= S_IFDIR
| S_IRUGO
| S_IXUGO
;
5130 static int _nfs4_proc_fs_locations(struct rpc_clnt
*client
, struct inode
*dir
,
5131 const struct qstr
*name
,
5132 struct nfs4_fs_locations
*fs_locations
,
5135 struct nfs_server
*server
= NFS_SERVER(dir
);
5137 [0] = FATTR4_WORD0_FSID
| FATTR4_WORD0_FS_LOCATIONS
,
5139 struct nfs4_fs_locations_arg args
= {
5140 .dir_fh
= NFS_FH(dir
),
5145 struct nfs4_fs_locations_res res
= {
5146 .fs_locations
= fs_locations
,
5148 struct rpc_message msg
= {
5149 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_FS_LOCATIONS
],
5155 dprintk("%s: start\n", __func__
);
5157 /* Ask for the fileid of the absent filesystem if mounted_on_fileid
5158 * is not supported */
5159 if (NFS_SERVER(dir
)->attr_bitmask
[1] & FATTR4_WORD1_MOUNTED_ON_FILEID
)
5160 bitmask
[1] |= FATTR4_WORD1_MOUNTED_ON_FILEID
;
5162 bitmask
[0] |= FATTR4_WORD0_FILEID
;
5164 nfs_fattr_init(&fs_locations
->fattr
);
5165 fs_locations
->server
= server
;
5166 fs_locations
->nlocations
= 0;
5167 status
= nfs4_call_sync(client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
5168 dprintk("%s: returned status = %d\n", __func__
, status
);
5172 int nfs4_proc_fs_locations(struct rpc_clnt
*client
, struct inode
*dir
,
5173 const struct qstr
*name
,
5174 struct nfs4_fs_locations
*fs_locations
,
5177 struct nfs4_exception exception
= { };
5180 err
= nfs4_handle_exception(NFS_SERVER(dir
),
5181 _nfs4_proc_fs_locations(client
, dir
, name
, fs_locations
, page
),
5183 } while (exception
.retry
);
5187 static int _nfs4_proc_secinfo(struct inode
*dir
, const struct qstr
*name
, struct nfs4_secinfo_flavors
*flavors
)
5190 struct nfs4_secinfo_arg args
= {
5191 .dir_fh
= NFS_FH(dir
),
5194 struct nfs4_secinfo_res res
= {
5197 struct rpc_message msg
= {
5198 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SECINFO
],
5203 dprintk("NFS call secinfo %s\n", name
->name
);
5204 status
= nfs4_call_sync(NFS_SERVER(dir
)->client
, NFS_SERVER(dir
), &msg
, &args
.seq_args
, &res
.seq_res
, 0);
5205 dprintk("NFS reply secinfo: %d\n", status
);
5209 int nfs4_proc_secinfo(struct inode
*dir
, const struct qstr
*name
,
5210 struct nfs4_secinfo_flavors
*flavors
)
5212 struct nfs4_exception exception
= { };
5215 err
= nfs4_handle_exception(NFS_SERVER(dir
),
5216 _nfs4_proc_secinfo(dir
, name
, flavors
),
5218 } while (exception
.retry
);
5222 #ifdef CONFIG_NFS_V4_1
5224 * Check the exchange flags returned by the server for invalid flags, having
5225 * both PNFS and NON_PNFS flags set, and not having one of NON_PNFS, PNFS, or
5228 static int nfs4_check_cl_exchange_flags(u32 flags
)
5230 if (flags
& ~EXCHGID4_FLAG_MASK_R
)
5232 if ((flags
& EXCHGID4_FLAG_USE_PNFS_MDS
) &&
5233 (flags
& EXCHGID4_FLAG_USE_NON_PNFS
))
5235 if (!(flags
& (EXCHGID4_FLAG_MASK_PNFS
)))
5239 return -NFS4ERR_INVAL
;
5243 nfs41_same_server_scope(struct nfs41_server_scope
*a
,
5244 struct nfs41_server_scope
*b
)
5246 if (a
->server_scope_sz
== b
->server_scope_sz
&&
5247 memcmp(a
->server_scope
, b
->server_scope
, a
->server_scope_sz
) == 0)
5254 * nfs4_proc_bind_conn_to_session()
5256 * The 4.1 client currently uses the same TCP connection for the
5257 * fore and backchannel.
5259 int nfs4_proc_bind_conn_to_session(struct nfs_client
*clp
, struct rpc_cred
*cred
)
5262 struct nfs41_bind_conn_to_session_res res
;
5263 struct rpc_message msg
= {
5265 &nfs4_procedures
[NFSPROC4_CLNT_BIND_CONN_TO_SESSION
],
5271 dprintk("--> %s\n", __func__
);
5273 res
.session
= kzalloc(sizeof(struct nfs4_session
), GFP_NOFS
);
5274 if (unlikely(res
.session
== NULL
)) {
5279 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
5281 if (memcmp(res
.session
->sess_id
.data
,
5282 clp
->cl_session
->sess_id
.data
, NFS4_MAX_SESSIONID_LEN
)) {
5283 dprintk("NFS: %s: Session ID mismatch\n", __func__
);
5287 if (res
.dir
!= NFS4_CDFS4_BOTH
) {
5288 dprintk("NFS: %s: Unexpected direction from server\n",
5293 if (res
.use_conn_in_rdma_mode
) {
5294 dprintk("NFS: %s: Server returned RDMA mode = true\n",
5303 dprintk("<-- %s status= %d\n", __func__
, status
);
5308 * nfs4_proc_exchange_id()
5310 * Returns zero, a negative errno, or a negative NFS4ERR status code.
5312 * Since the clientid has expired, all compounds using sessions
5313 * associated with the stale clientid will be returning
5314 * NFS4ERR_BADSESSION in the sequence operation, and will therefore
5315 * be in some phase of session reset.
5317 int nfs4_proc_exchange_id(struct nfs_client
*clp
, struct rpc_cred
*cred
)
5319 nfs4_verifier verifier
;
5320 struct nfs41_exchange_id_args args
= {
5321 .verifier
= &verifier
,
5323 .flags
= EXCHGID4_FLAG_SUPP_MOVED_REFER
,
5325 struct nfs41_exchange_id_res res
= {
5329 struct rpc_message msg
= {
5330 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_EXCHANGE_ID
],
5336 nfs4_init_boot_verifier(clp
, &verifier
);
5337 args
.id_len
= nfs4_init_uniform_client_string(clp
, args
.id
,
5339 dprintk("NFS call exchange_id auth=%s, '%.*s'\n",
5340 clp
->cl_rpcclient
->cl_auth
->au_ops
->au_name
,
5341 args
.id_len
, args
.id
);
5343 res
.server_owner
= kzalloc(sizeof(struct nfs41_server_owner
),
5345 if (unlikely(res
.server_owner
== NULL
)) {
5350 res
.server_scope
= kzalloc(sizeof(struct nfs41_server_scope
),
5352 if (unlikely(res
.server_scope
== NULL
)) {
5354 goto out_server_owner
;
5357 res
.impl_id
= kzalloc(sizeof(struct nfs41_impl_id
), GFP_NOFS
);
5358 if (unlikely(res
.impl_id
== NULL
)) {
5360 goto out_server_scope
;
5363 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
5365 status
= nfs4_check_cl_exchange_flags(res
.flags
);
5368 clp
->cl_clientid
= res
.clientid
;
5369 clp
->cl_exchange_flags
= (res
.flags
& ~EXCHGID4_FLAG_CONFIRMED_R
);
5370 if (!(res
.flags
& EXCHGID4_FLAG_CONFIRMED_R
))
5371 clp
->cl_seqid
= res
.seqid
;
5373 kfree(clp
->cl_serverowner
);
5374 clp
->cl_serverowner
= res
.server_owner
;
5375 res
.server_owner
= NULL
;
5377 /* use the most recent implementation id */
5378 kfree(clp
->cl_implid
);
5379 clp
->cl_implid
= res
.impl_id
;
5381 if (clp
->cl_serverscope
!= NULL
&&
5382 !nfs41_same_server_scope(clp
->cl_serverscope
,
5383 res
.server_scope
)) {
5384 dprintk("%s: server_scope mismatch detected\n",
5386 set_bit(NFS4CLNT_SERVER_SCOPE_MISMATCH
, &clp
->cl_state
);
5387 kfree(clp
->cl_serverscope
);
5388 clp
->cl_serverscope
= NULL
;
5391 if (clp
->cl_serverscope
== NULL
) {
5392 clp
->cl_serverscope
= res
.server_scope
;
5399 kfree(res
.server_owner
);
5401 kfree(res
.server_scope
);
5403 if (clp
->cl_implid
!= NULL
)
5404 dprintk("NFS reply exchange_id: Server Implementation ID: "
5405 "domain: %s, name: %s, date: %llu,%u\n",
5406 clp
->cl_implid
->domain
, clp
->cl_implid
->name
,
5407 clp
->cl_implid
->date
.seconds
,
5408 clp
->cl_implid
->date
.nseconds
);
5409 dprintk("NFS reply exchange_id: %d\n", status
);
5413 static int _nfs4_proc_destroy_clientid(struct nfs_client
*clp
,
5414 struct rpc_cred
*cred
)
5416 struct rpc_message msg
= {
5417 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_DESTROY_CLIENTID
],
5423 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
5425 dprintk("NFS: Got error %d from the server %s on "
5426 "DESTROY_CLIENTID.", status
, clp
->cl_hostname
);
5430 static int nfs4_proc_destroy_clientid(struct nfs_client
*clp
,
5431 struct rpc_cred
*cred
)
5436 for (loop
= NFS4_MAX_LOOP_ON_RECOVER
; loop
!= 0; loop
--) {
5437 ret
= _nfs4_proc_destroy_clientid(clp
, cred
);
5439 case -NFS4ERR_DELAY
:
5440 case -NFS4ERR_CLIENTID_BUSY
:
5450 int nfs4_destroy_clientid(struct nfs_client
*clp
)
5452 struct rpc_cred
*cred
;
5455 if (clp
->cl_mvops
->minor_version
< 1)
5457 if (clp
->cl_exchange_flags
== 0)
5459 if (clp
->cl_preserve_clid
)
5461 cred
= nfs4_get_exchange_id_cred(clp
);
5462 ret
= nfs4_proc_destroy_clientid(clp
, cred
);
5467 case -NFS4ERR_STALE_CLIENTID
:
5468 clp
->cl_exchange_flags
= 0;
5474 struct nfs4_get_lease_time_data
{
5475 struct nfs4_get_lease_time_args
*args
;
5476 struct nfs4_get_lease_time_res
*res
;
5477 struct nfs_client
*clp
;
5480 static void nfs4_get_lease_time_prepare(struct rpc_task
*task
,
5483 struct nfs4_get_lease_time_data
*data
=
5484 (struct nfs4_get_lease_time_data
*)calldata
;
5486 dprintk("--> %s\n", __func__
);
5487 /* just setup sequence, do not trigger session recovery
5488 since we're invoked within one */
5489 nfs41_setup_sequence(data
->clp
->cl_session
,
5490 &data
->args
->la_seq_args
,
5491 &data
->res
->lr_seq_res
,
5493 dprintk("<-- %s\n", __func__
);
5497 * Called from nfs4_state_manager thread for session setup, so don't recover
5498 * from sequence operation or clientid errors.
5500 static void nfs4_get_lease_time_done(struct rpc_task
*task
, void *calldata
)
5502 struct nfs4_get_lease_time_data
*data
=
5503 (struct nfs4_get_lease_time_data
*)calldata
;
5505 dprintk("--> %s\n", __func__
);
5506 if (!nfs41_sequence_done(task
, &data
->res
->lr_seq_res
))
5508 switch (task
->tk_status
) {
5509 case -NFS4ERR_DELAY
:
5510 case -NFS4ERR_GRACE
:
5511 dprintk("%s Retry: tk_status %d\n", __func__
, task
->tk_status
);
5512 rpc_delay(task
, NFS4_POLL_RETRY_MIN
);
5513 task
->tk_status
= 0;
5515 case -NFS4ERR_RETRY_UNCACHED_REP
:
5516 rpc_restart_call_prepare(task
);
5519 dprintk("<-- %s\n", __func__
);
5522 static const struct rpc_call_ops nfs4_get_lease_time_ops
= {
5523 .rpc_call_prepare
= nfs4_get_lease_time_prepare
,
5524 .rpc_call_done
= nfs4_get_lease_time_done
,
5527 int nfs4_proc_get_lease_time(struct nfs_client
*clp
, struct nfs_fsinfo
*fsinfo
)
5529 struct rpc_task
*task
;
5530 struct nfs4_get_lease_time_args args
;
5531 struct nfs4_get_lease_time_res res
= {
5532 .lr_fsinfo
= fsinfo
,
5534 struct nfs4_get_lease_time_data data
= {
5539 struct rpc_message msg
= {
5540 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GET_LEASE_TIME
],
5544 struct rpc_task_setup task_setup
= {
5545 .rpc_client
= clp
->cl_rpcclient
,
5546 .rpc_message
= &msg
,
5547 .callback_ops
= &nfs4_get_lease_time_ops
,
5548 .callback_data
= &data
,
5549 .flags
= RPC_TASK_TIMEOUT
,
5553 nfs41_init_sequence(&args
.la_seq_args
, &res
.lr_seq_res
, 0);
5554 nfs4_set_sequence_privileged(&args
.la_seq_args
);
5555 dprintk("--> %s\n", __func__
);
5556 task
= rpc_run_task(&task_setup
);
5559 status
= PTR_ERR(task
);
5561 status
= task
->tk_status
;
5564 dprintk("<-- %s return %d\n", __func__
, status
);
5570 * Initialize the values to be used by the client in CREATE_SESSION
5571 * If nfs4_init_session set the fore channel request and response sizes,
5574 * Set the back channel max_resp_sz_cached to zero to force the client to
5575 * always set csa_cachethis to FALSE because the current implementation
5576 * of the back channel DRC only supports caching the CB_SEQUENCE operation.
5578 static void nfs4_init_channel_attrs(struct nfs41_create_session_args
*args
)
5580 struct nfs4_session
*session
= args
->client
->cl_session
;
5581 unsigned int mxrqst_sz
= session
->fc_target_max_rqst_sz
,
5582 mxresp_sz
= session
->fc_target_max_resp_sz
;
5585 mxrqst_sz
= NFS_MAX_FILE_IO_SIZE
;
5587 mxresp_sz
= NFS_MAX_FILE_IO_SIZE
;
5588 /* Fore channel attributes */
5589 args
->fc_attrs
.max_rqst_sz
= mxrqst_sz
;
5590 args
->fc_attrs
.max_resp_sz
= mxresp_sz
;
5591 args
->fc_attrs
.max_ops
= NFS4_MAX_OPS
;
5592 args
->fc_attrs
.max_reqs
= max_session_slots
;
5594 dprintk("%s: Fore Channel : max_rqst_sz=%u max_resp_sz=%u "
5595 "max_ops=%u max_reqs=%u\n",
5597 args
->fc_attrs
.max_rqst_sz
, args
->fc_attrs
.max_resp_sz
,
5598 args
->fc_attrs
.max_ops
, args
->fc_attrs
.max_reqs
);
5600 /* Back channel attributes */
5601 args
->bc_attrs
.max_rqst_sz
= PAGE_SIZE
;
5602 args
->bc_attrs
.max_resp_sz
= PAGE_SIZE
;
5603 args
->bc_attrs
.max_resp_sz_cached
= 0;
5604 args
->bc_attrs
.max_ops
= NFS4_MAX_BACK_CHANNEL_OPS
;
5605 args
->bc_attrs
.max_reqs
= 1;
5607 dprintk("%s: Back Channel : max_rqst_sz=%u max_resp_sz=%u "
5608 "max_resp_sz_cached=%u max_ops=%u max_reqs=%u\n",
5610 args
->bc_attrs
.max_rqst_sz
, args
->bc_attrs
.max_resp_sz
,
5611 args
->bc_attrs
.max_resp_sz_cached
, args
->bc_attrs
.max_ops
,
5612 args
->bc_attrs
.max_reqs
);
5615 static int nfs4_verify_fore_channel_attrs(struct nfs41_create_session_args
*args
, struct nfs4_session
*session
)
5617 struct nfs4_channel_attrs
*sent
= &args
->fc_attrs
;
5618 struct nfs4_channel_attrs
*rcvd
= &session
->fc_attrs
;
5620 if (rcvd
->max_resp_sz
> sent
->max_resp_sz
)
5623 * Our requested max_ops is the minimum we need; we're not
5624 * prepared to break up compounds into smaller pieces than that.
5625 * So, no point even trying to continue if the server won't
5628 if (rcvd
->max_ops
< sent
->max_ops
)
5630 if (rcvd
->max_reqs
== 0)
5632 if (rcvd
->max_reqs
> NFS4_MAX_SLOT_TABLE
)
5633 rcvd
->max_reqs
= NFS4_MAX_SLOT_TABLE
;
5637 static int nfs4_verify_back_channel_attrs(struct nfs41_create_session_args
*args
, struct nfs4_session
*session
)
5639 struct nfs4_channel_attrs
*sent
= &args
->bc_attrs
;
5640 struct nfs4_channel_attrs
*rcvd
= &session
->bc_attrs
;
5642 if (rcvd
->max_rqst_sz
> sent
->max_rqst_sz
)
5644 if (rcvd
->max_resp_sz
< sent
->max_resp_sz
)
5646 if (rcvd
->max_resp_sz_cached
> sent
->max_resp_sz_cached
)
5648 /* These would render the backchannel useless: */
5649 if (rcvd
->max_ops
!= sent
->max_ops
)
5651 if (rcvd
->max_reqs
!= sent
->max_reqs
)
5656 static int nfs4_verify_channel_attrs(struct nfs41_create_session_args
*args
,
5657 struct nfs4_session
*session
)
5661 ret
= nfs4_verify_fore_channel_attrs(args
, session
);
5664 return nfs4_verify_back_channel_attrs(args
, session
);
5667 static int _nfs4_proc_create_session(struct nfs_client
*clp
,
5668 struct rpc_cred
*cred
)
5670 struct nfs4_session
*session
= clp
->cl_session
;
5671 struct nfs41_create_session_args args
= {
5673 .cb_program
= NFS4_CALLBACK
,
5675 struct nfs41_create_session_res res
= {
5678 struct rpc_message msg
= {
5679 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_CREATE_SESSION
],
5686 nfs4_init_channel_attrs(&args
);
5687 args
.flags
= (SESSION4_PERSIST
| SESSION4_BACK_CHAN
);
5689 status
= rpc_call_sync(session
->clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
5692 /* Verify the session's negotiated channel_attrs values */
5693 status
= nfs4_verify_channel_attrs(&args
, session
);
5694 /* Increment the clientid slot sequence id */
5702 * Issues a CREATE_SESSION operation to the server.
5703 * It is the responsibility of the caller to verify the session is
5704 * expired before calling this routine.
5706 int nfs4_proc_create_session(struct nfs_client
*clp
, struct rpc_cred
*cred
)
5710 struct nfs4_session
*session
= clp
->cl_session
;
5712 dprintk("--> %s clp=%p session=%p\n", __func__
, clp
, session
);
5714 status
= _nfs4_proc_create_session(clp
, cred
);
5718 /* Init or reset the session slot tables */
5719 status
= nfs4_setup_session_slot_tables(session
);
5720 dprintk("slot table setup returned %d\n", status
);
5724 ptr
= (unsigned *)&session
->sess_id
.data
[0];
5725 dprintk("%s client>seqid %d sessionid %u:%u:%u:%u\n", __func__
,
5726 clp
->cl_seqid
, ptr
[0], ptr
[1], ptr
[2], ptr
[3]);
5728 dprintk("<-- %s\n", __func__
);
5733 * Issue the over-the-wire RPC DESTROY_SESSION.
5734 * The caller must serialize access to this routine.
5736 int nfs4_proc_destroy_session(struct nfs4_session
*session
,
5737 struct rpc_cred
*cred
)
5739 struct rpc_message msg
= {
5740 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_DESTROY_SESSION
],
5741 .rpc_argp
= session
,
5746 dprintk("--> nfs4_proc_destroy_session\n");
5748 /* session is still being setup */
5749 if (session
->clp
->cl_cons_state
!= NFS_CS_READY
)
5752 status
= rpc_call_sync(session
->clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
5755 dprintk("NFS: Got error %d from the server on DESTROY_SESSION. "
5756 "Session has been destroyed regardless...\n", status
);
5758 dprintk("<-- nfs4_proc_destroy_session\n");
5763 * Renew the cl_session lease.
5765 struct nfs4_sequence_data
{
5766 struct nfs_client
*clp
;
5767 struct nfs4_sequence_args args
;
5768 struct nfs4_sequence_res res
;
5771 static void nfs41_sequence_release(void *data
)
5773 struct nfs4_sequence_data
*calldata
= data
;
5774 struct nfs_client
*clp
= calldata
->clp
;
5776 if (atomic_read(&clp
->cl_count
) > 1)
5777 nfs4_schedule_state_renewal(clp
);
5778 nfs_put_client(clp
);
5782 static int nfs41_sequence_handle_errors(struct rpc_task
*task
, struct nfs_client
*clp
)
5784 switch(task
->tk_status
) {
5785 case -NFS4ERR_DELAY
:
5786 rpc_delay(task
, NFS4_POLL_RETRY_MAX
);
5789 nfs4_schedule_lease_recovery(clp
);
5794 static void nfs41_sequence_call_done(struct rpc_task
*task
, void *data
)
5796 struct nfs4_sequence_data
*calldata
= data
;
5797 struct nfs_client
*clp
= calldata
->clp
;
5799 if (!nfs41_sequence_done(task
, task
->tk_msg
.rpc_resp
))
5802 if (task
->tk_status
< 0) {
5803 dprintk("%s ERROR %d\n", __func__
, task
->tk_status
);
5804 if (atomic_read(&clp
->cl_count
) == 1)
5807 if (nfs41_sequence_handle_errors(task
, clp
) == -EAGAIN
) {
5808 rpc_restart_call_prepare(task
);
5812 dprintk("%s rpc_cred %p\n", __func__
, task
->tk_msg
.rpc_cred
);
5814 dprintk("<-- %s\n", __func__
);
5817 static void nfs41_sequence_prepare(struct rpc_task
*task
, void *data
)
5819 struct nfs4_sequence_data
*calldata
= data
;
5820 struct nfs_client
*clp
= calldata
->clp
;
5821 struct nfs4_sequence_args
*args
;
5822 struct nfs4_sequence_res
*res
;
5824 args
= task
->tk_msg
.rpc_argp
;
5825 res
= task
->tk_msg
.rpc_resp
;
5827 nfs41_setup_sequence(clp
->cl_session
, args
, res
, task
);
5830 static const struct rpc_call_ops nfs41_sequence_ops
= {
5831 .rpc_call_done
= nfs41_sequence_call_done
,
5832 .rpc_call_prepare
= nfs41_sequence_prepare
,
5833 .rpc_release
= nfs41_sequence_release
,
5836 static struct rpc_task
*_nfs41_proc_sequence(struct nfs_client
*clp
,
5837 struct rpc_cred
*cred
,
5840 struct nfs4_sequence_data
*calldata
;
5841 struct rpc_message msg
= {
5842 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SEQUENCE
],
5845 struct rpc_task_setup task_setup_data
= {
5846 .rpc_client
= clp
->cl_rpcclient
,
5847 .rpc_message
= &msg
,
5848 .callback_ops
= &nfs41_sequence_ops
,
5849 .flags
= RPC_TASK_ASYNC
| RPC_TASK_SOFT
,
5852 if (!atomic_inc_not_zero(&clp
->cl_count
))
5853 return ERR_PTR(-EIO
);
5854 calldata
= kzalloc(sizeof(*calldata
), GFP_NOFS
);
5855 if (calldata
== NULL
) {
5856 nfs_put_client(clp
);
5857 return ERR_PTR(-ENOMEM
);
5859 nfs41_init_sequence(&calldata
->args
, &calldata
->res
, 0);
5861 nfs4_set_sequence_privileged(&calldata
->args
);
5862 msg
.rpc_argp
= &calldata
->args
;
5863 msg
.rpc_resp
= &calldata
->res
;
5864 calldata
->clp
= clp
;
5865 task_setup_data
.callback_data
= calldata
;
5867 return rpc_run_task(&task_setup_data
);
5870 static int nfs41_proc_async_sequence(struct nfs_client
*clp
, struct rpc_cred
*cred
, unsigned renew_flags
)
5872 struct rpc_task
*task
;
5875 if ((renew_flags
& NFS4_RENEW_TIMEOUT
) == 0)
5877 task
= _nfs41_proc_sequence(clp
, cred
, false);
5879 ret
= PTR_ERR(task
);
5881 rpc_put_task_async(task
);
5882 dprintk("<-- %s status=%d\n", __func__
, ret
);
5886 static int nfs4_proc_sequence(struct nfs_client
*clp
, struct rpc_cred
*cred
)
5888 struct rpc_task
*task
;
5891 task
= _nfs41_proc_sequence(clp
, cred
, true);
5893 ret
= PTR_ERR(task
);
5896 ret
= rpc_wait_for_completion_task(task
);
5898 struct nfs4_sequence_res
*res
= task
->tk_msg
.rpc_resp
;
5900 if (task
->tk_status
== 0)
5901 nfs41_handle_sequence_flag_errors(clp
, res
->sr_status_flags
);
5902 ret
= task
->tk_status
;
5906 dprintk("<-- %s status=%d\n", __func__
, ret
);
5910 struct nfs4_reclaim_complete_data
{
5911 struct nfs_client
*clp
;
5912 struct nfs41_reclaim_complete_args arg
;
5913 struct nfs41_reclaim_complete_res res
;
5916 static void nfs4_reclaim_complete_prepare(struct rpc_task
*task
, void *data
)
5918 struct nfs4_reclaim_complete_data
*calldata
= data
;
5920 nfs41_setup_sequence(calldata
->clp
->cl_session
,
5921 &calldata
->arg
.seq_args
,
5922 &calldata
->res
.seq_res
,
5926 static int nfs41_reclaim_complete_handle_errors(struct rpc_task
*task
, struct nfs_client
*clp
)
5928 switch(task
->tk_status
) {
5930 case -NFS4ERR_COMPLETE_ALREADY
:
5931 case -NFS4ERR_WRONG_CRED
: /* What to do here? */
5933 case -NFS4ERR_DELAY
:
5934 rpc_delay(task
, NFS4_POLL_RETRY_MAX
);
5936 case -NFS4ERR_RETRY_UNCACHED_REP
:
5939 nfs4_schedule_lease_recovery(clp
);
5944 static void nfs4_reclaim_complete_done(struct rpc_task
*task
, void *data
)
5946 struct nfs4_reclaim_complete_data
*calldata
= data
;
5947 struct nfs_client
*clp
= calldata
->clp
;
5948 struct nfs4_sequence_res
*res
= &calldata
->res
.seq_res
;
5950 dprintk("--> %s\n", __func__
);
5951 if (!nfs41_sequence_done(task
, res
))
5954 if (nfs41_reclaim_complete_handle_errors(task
, clp
) == -EAGAIN
) {
5955 rpc_restart_call_prepare(task
);
5958 dprintk("<-- %s\n", __func__
);
5961 static void nfs4_free_reclaim_complete_data(void *data
)
5963 struct nfs4_reclaim_complete_data
*calldata
= data
;
5968 static const struct rpc_call_ops nfs4_reclaim_complete_call_ops
= {
5969 .rpc_call_prepare
= nfs4_reclaim_complete_prepare
,
5970 .rpc_call_done
= nfs4_reclaim_complete_done
,
5971 .rpc_release
= nfs4_free_reclaim_complete_data
,
5975 * Issue a global reclaim complete.
5977 static int nfs41_proc_reclaim_complete(struct nfs_client
*clp
)
5979 struct nfs4_reclaim_complete_data
*calldata
;
5980 struct rpc_task
*task
;
5981 struct rpc_message msg
= {
5982 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RECLAIM_COMPLETE
],
5984 struct rpc_task_setup task_setup_data
= {
5985 .rpc_client
= clp
->cl_rpcclient
,
5986 .rpc_message
= &msg
,
5987 .callback_ops
= &nfs4_reclaim_complete_call_ops
,
5988 .flags
= RPC_TASK_ASYNC
,
5990 int status
= -ENOMEM
;
5992 dprintk("--> %s\n", __func__
);
5993 calldata
= kzalloc(sizeof(*calldata
), GFP_NOFS
);
5994 if (calldata
== NULL
)
5996 calldata
->clp
= clp
;
5997 calldata
->arg
.one_fs
= 0;
5999 nfs41_init_sequence(&calldata
->arg
.seq_args
, &calldata
->res
.seq_res
, 0);
6000 nfs4_set_sequence_privileged(&calldata
->arg
.seq_args
);
6001 msg
.rpc_argp
= &calldata
->arg
;
6002 msg
.rpc_resp
= &calldata
->res
;
6003 task_setup_data
.callback_data
= calldata
;
6004 task
= rpc_run_task(&task_setup_data
);
6006 status
= PTR_ERR(task
);
6009 status
= nfs4_wait_for_completion_rpc_task(task
);
6011 status
= task
->tk_status
;
6015 dprintk("<-- %s status=%d\n", __func__
, status
);
6020 nfs4_layoutget_prepare(struct rpc_task
*task
, void *calldata
)
6022 struct nfs4_layoutget
*lgp
= calldata
;
6023 struct nfs_server
*server
= NFS_SERVER(lgp
->args
.inode
);
6024 struct nfs4_session
*session
= nfs4_get_session(server
);
6026 dprintk("--> %s\n", __func__
);
6027 /* Note the is a race here, where a CB_LAYOUTRECALL can come in
6028 * right now covering the LAYOUTGET we are about to send.
6029 * However, that is not so catastrophic, and there seems
6030 * to be no way to prevent it completely.
6032 if (nfs41_setup_sequence(session
, &lgp
->args
.seq_args
,
6033 &lgp
->res
.seq_res
, task
))
6035 if (pnfs_choose_layoutget_stateid(&lgp
->args
.stateid
,
6036 NFS_I(lgp
->args
.inode
)->layout
,
6037 lgp
->args
.ctx
->state
)) {
6038 rpc_exit(task
, NFS4_OK
);
6042 static void nfs4_layoutget_done(struct rpc_task
*task
, void *calldata
)
6044 struct nfs4_layoutget
*lgp
= calldata
;
6045 struct inode
*inode
= lgp
->args
.inode
;
6046 struct nfs_server
*server
= NFS_SERVER(inode
);
6047 struct pnfs_layout_hdr
*lo
;
6048 struct nfs4_state
*state
= NULL
;
6050 dprintk("--> %s\n", __func__
);
6052 if (!nfs41_sequence_done(task
, &lgp
->res
.seq_res
))
6055 switch (task
->tk_status
) {
6058 case -NFS4ERR_LAYOUTTRYLATER
:
6059 case -NFS4ERR_RECALLCONFLICT
:
6060 task
->tk_status
= -NFS4ERR_DELAY
;
6062 case -NFS4ERR_EXPIRED
:
6063 case -NFS4ERR_BAD_STATEID
:
6064 spin_lock(&inode
->i_lock
);
6065 lo
= NFS_I(inode
)->layout
;
6066 if (!lo
|| list_empty(&lo
->plh_segs
)) {
6067 spin_unlock(&inode
->i_lock
);
6068 /* If the open stateid was bad, then recover it. */
6069 state
= lgp
->args
.ctx
->state
;
6073 pnfs_mark_matching_lsegs_invalid(lo
, &head
, NULL
);
6074 spin_unlock(&inode
->i_lock
);
6075 /* Mark the bad layout state as invalid, then
6076 * retry using the open stateid. */
6077 pnfs_free_lseg_list(&head
);
6080 if (nfs4_async_handle_error(task
, server
, state
) == -EAGAIN
)
6081 rpc_restart_call_prepare(task
);
6083 dprintk("<-- %s\n", __func__
);
6086 static size_t max_response_pages(struct nfs_server
*server
)
6088 u32 max_resp_sz
= server
->nfs_client
->cl_session
->fc_attrs
.max_resp_sz
;
6089 return nfs_page_array_len(0, max_resp_sz
);
6092 static void nfs4_free_pages(struct page
**pages
, size_t size
)
6099 for (i
= 0; i
< size
; i
++) {
6102 __free_page(pages
[i
]);
6107 static struct page
**nfs4_alloc_pages(size_t size
, gfp_t gfp_flags
)
6109 struct page
**pages
;
6112 pages
= kcalloc(size
, sizeof(struct page
*), gfp_flags
);
6114 dprintk("%s: can't alloc array of %zu pages\n", __func__
, size
);
6118 for (i
= 0; i
< size
; i
++) {
6119 pages
[i
] = alloc_page(gfp_flags
);
6121 dprintk("%s: failed to allocate page\n", __func__
);
6122 nfs4_free_pages(pages
, size
);
6130 static void nfs4_layoutget_release(void *calldata
)
6132 struct nfs4_layoutget
*lgp
= calldata
;
6133 struct inode
*inode
= lgp
->args
.inode
;
6134 struct nfs_server
*server
= NFS_SERVER(inode
);
6135 size_t max_pages
= max_response_pages(server
);
6137 dprintk("--> %s\n", __func__
);
6138 nfs4_free_pages(lgp
->args
.layout
.pages
, max_pages
);
6139 pnfs_put_layout_hdr(NFS_I(inode
)->layout
);
6140 put_nfs_open_context(lgp
->args
.ctx
);
6142 dprintk("<-- %s\n", __func__
);
6145 static const struct rpc_call_ops nfs4_layoutget_call_ops
= {
6146 .rpc_call_prepare
= nfs4_layoutget_prepare
,
6147 .rpc_call_done
= nfs4_layoutget_done
,
6148 .rpc_release
= nfs4_layoutget_release
,
6151 struct pnfs_layout_segment
*
6152 nfs4_proc_layoutget(struct nfs4_layoutget
*lgp
, gfp_t gfp_flags
)
6154 struct inode
*inode
= lgp
->args
.inode
;
6155 struct nfs_server
*server
= NFS_SERVER(inode
);
6156 size_t max_pages
= max_response_pages(server
);
6157 struct rpc_task
*task
;
6158 struct rpc_message msg
= {
6159 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LAYOUTGET
],
6160 .rpc_argp
= &lgp
->args
,
6161 .rpc_resp
= &lgp
->res
,
6163 struct rpc_task_setup task_setup_data
= {
6164 .rpc_client
= server
->client
,
6165 .rpc_message
= &msg
,
6166 .callback_ops
= &nfs4_layoutget_call_ops
,
6167 .callback_data
= lgp
,
6168 .flags
= RPC_TASK_ASYNC
,
6170 struct pnfs_layout_segment
*lseg
= NULL
;
6173 dprintk("--> %s\n", __func__
);
6175 lgp
->args
.layout
.pages
= nfs4_alloc_pages(max_pages
, gfp_flags
);
6176 if (!lgp
->args
.layout
.pages
) {
6177 nfs4_layoutget_release(lgp
);
6178 return ERR_PTR(-ENOMEM
);
6180 lgp
->args
.layout
.pglen
= max_pages
* PAGE_SIZE
;
6182 lgp
->res
.layoutp
= &lgp
->args
.layout
;
6183 lgp
->res
.seq_res
.sr_slot
= NULL
;
6184 nfs41_init_sequence(&lgp
->args
.seq_args
, &lgp
->res
.seq_res
, 0);
6186 /* nfs4_layoutget_release calls pnfs_put_layout_hdr */
6187 pnfs_get_layout_hdr(NFS_I(inode
)->layout
);
6189 task
= rpc_run_task(&task_setup_data
);
6191 return ERR_CAST(task
);
6192 status
= nfs4_wait_for_completion_rpc_task(task
);
6194 status
= task
->tk_status
;
6195 /* if layoutp->len is 0, nfs4_layoutget_prepare called rpc_exit */
6196 if (status
== 0 && lgp
->res
.layoutp
->len
)
6197 lseg
= pnfs_layout_process(lgp
);
6199 dprintk("<-- %s status=%d\n", __func__
, status
);
6201 return ERR_PTR(status
);
6206 nfs4_layoutreturn_prepare(struct rpc_task
*task
, void *calldata
)
6208 struct nfs4_layoutreturn
*lrp
= calldata
;
6210 dprintk("--> %s\n", __func__
);
6211 nfs41_setup_sequence(lrp
->clp
->cl_session
,
6212 &lrp
->args
.seq_args
,
6217 static void nfs4_layoutreturn_done(struct rpc_task
*task
, void *calldata
)
6219 struct nfs4_layoutreturn
*lrp
= calldata
;
6220 struct nfs_server
*server
;
6222 dprintk("--> %s\n", __func__
);
6224 if (!nfs41_sequence_done(task
, &lrp
->res
.seq_res
))
6227 server
= NFS_SERVER(lrp
->args
.inode
);
6228 if (nfs4_async_handle_error(task
, server
, NULL
) == -EAGAIN
) {
6229 rpc_restart_call_prepare(task
);
6232 dprintk("<-- %s\n", __func__
);
6235 static void nfs4_layoutreturn_release(void *calldata
)
6237 struct nfs4_layoutreturn
*lrp
= calldata
;
6238 struct pnfs_layout_hdr
*lo
= lrp
->args
.layout
;
6240 dprintk("--> %s\n", __func__
);
6241 spin_lock(&lo
->plh_inode
->i_lock
);
6242 if (lrp
->res
.lrs_present
)
6243 pnfs_set_layout_stateid(lo
, &lrp
->res
.stateid
, true);
6244 lo
->plh_block_lgets
--;
6245 spin_unlock(&lo
->plh_inode
->i_lock
);
6246 pnfs_put_layout_hdr(lrp
->args
.layout
);
6248 dprintk("<-- %s\n", __func__
);
6251 static const struct rpc_call_ops nfs4_layoutreturn_call_ops
= {
6252 .rpc_call_prepare
= nfs4_layoutreturn_prepare
,
6253 .rpc_call_done
= nfs4_layoutreturn_done
,
6254 .rpc_release
= nfs4_layoutreturn_release
,
6257 int nfs4_proc_layoutreturn(struct nfs4_layoutreturn
*lrp
)
6259 struct rpc_task
*task
;
6260 struct rpc_message msg
= {
6261 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LAYOUTRETURN
],
6262 .rpc_argp
= &lrp
->args
,
6263 .rpc_resp
= &lrp
->res
,
6265 struct rpc_task_setup task_setup_data
= {
6266 .rpc_client
= lrp
->clp
->cl_rpcclient
,
6267 .rpc_message
= &msg
,
6268 .callback_ops
= &nfs4_layoutreturn_call_ops
,
6269 .callback_data
= lrp
,
6273 dprintk("--> %s\n", __func__
);
6274 nfs41_init_sequence(&lrp
->args
.seq_args
, &lrp
->res
.seq_res
, 1);
6275 task
= rpc_run_task(&task_setup_data
);
6277 return PTR_ERR(task
);
6278 status
= task
->tk_status
;
6279 dprintk("<-- %s status=%d\n", __func__
, status
);
6285 * Retrieve the list of Data Server devices from the MDS.
6287 static int _nfs4_getdevicelist(struct nfs_server
*server
,
6288 const struct nfs_fh
*fh
,
6289 struct pnfs_devicelist
*devlist
)
6291 struct nfs4_getdevicelist_args args
= {
6293 .layoutclass
= server
->pnfs_curr_ld
->id
,
6295 struct nfs4_getdevicelist_res res
= {
6298 struct rpc_message msg
= {
6299 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GETDEVICELIST
],
6305 dprintk("--> %s\n", __func__
);
6306 status
= nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
,
6308 dprintk("<-- %s status=%d\n", __func__
, status
);
6312 int nfs4_proc_getdevicelist(struct nfs_server
*server
,
6313 const struct nfs_fh
*fh
,
6314 struct pnfs_devicelist
*devlist
)
6316 struct nfs4_exception exception
= { };
6320 err
= nfs4_handle_exception(server
,
6321 _nfs4_getdevicelist(server
, fh
, devlist
),
6323 } while (exception
.retry
);
6325 dprintk("%s: err=%d, num_devs=%u\n", __func__
,
6326 err
, devlist
->num_devs
);
6330 EXPORT_SYMBOL_GPL(nfs4_proc_getdevicelist
);
6333 _nfs4_proc_getdeviceinfo(struct nfs_server
*server
, struct pnfs_device
*pdev
)
6335 struct nfs4_getdeviceinfo_args args
= {
6338 struct nfs4_getdeviceinfo_res res
= {
6341 struct rpc_message msg
= {
6342 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GETDEVICEINFO
],
6348 dprintk("--> %s\n", __func__
);
6349 status
= nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
6350 dprintk("<-- %s status=%d\n", __func__
, status
);
6355 int nfs4_proc_getdeviceinfo(struct nfs_server
*server
, struct pnfs_device
*pdev
)
6357 struct nfs4_exception exception
= { };
6361 err
= nfs4_handle_exception(server
,
6362 _nfs4_proc_getdeviceinfo(server
, pdev
),
6364 } while (exception
.retry
);
6367 EXPORT_SYMBOL_GPL(nfs4_proc_getdeviceinfo
);
6369 static void nfs4_layoutcommit_prepare(struct rpc_task
*task
, void *calldata
)
6371 struct nfs4_layoutcommit_data
*data
= calldata
;
6372 struct nfs_server
*server
= NFS_SERVER(data
->args
.inode
);
6373 struct nfs4_session
*session
= nfs4_get_session(server
);
6375 nfs41_setup_sequence(session
,
6376 &data
->args
.seq_args
,
6382 nfs4_layoutcommit_done(struct rpc_task
*task
, void *calldata
)
6384 struct nfs4_layoutcommit_data
*data
= calldata
;
6385 struct nfs_server
*server
= NFS_SERVER(data
->args
.inode
);
6387 if (!nfs41_sequence_done(task
, &data
->res
.seq_res
))
6390 switch (task
->tk_status
) { /* Just ignore these failures */
6391 case -NFS4ERR_DELEG_REVOKED
: /* layout was recalled */
6392 case -NFS4ERR_BADIOMODE
: /* no IOMODE_RW layout for range */
6393 case -NFS4ERR_BADLAYOUT
: /* no layout */
6394 case -NFS4ERR_GRACE
: /* loca_recalim always false */
6395 task
->tk_status
= 0;
6398 nfs_post_op_update_inode_force_wcc(data
->args
.inode
,
6402 if (nfs4_async_handle_error(task
, server
, NULL
) == -EAGAIN
) {
6403 rpc_restart_call_prepare(task
);
6409 static void nfs4_layoutcommit_release(void *calldata
)
6411 struct nfs4_layoutcommit_data
*data
= calldata
;
6412 struct pnfs_layout_segment
*lseg
, *tmp
;
6413 unsigned long *bitlock
= &NFS_I(data
->args
.inode
)->flags
;
6415 pnfs_cleanup_layoutcommit(data
);
6416 /* Matched by references in pnfs_set_layoutcommit */
6417 list_for_each_entry_safe(lseg
, tmp
, &data
->lseg_list
, pls_lc_list
) {
6418 list_del_init(&lseg
->pls_lc_list
);
6419 if (test_and_clear_bit(NFS_LSEG_LAYOUTCOMMIT
,
6421 pnfs_put_lseg(lseg
);
6424 clear_bit_unlock(NFS_INO_LAYOUTCOMMITTING
, bitlock
);
6425 smp_mb__after_clear_bit();
6426 wake_up_bit(bitlock
, NFS_INO_LAYOUTCOMMITTING
);
6428 put_rpccred(data
->cred
);
6432 static const struct rpc_call_ops nfs4_layoutcommit_ops
= {
6433 .rpc_call_prepare
= nfs4_layoutcommit_prepare
,
6434 .rpc_call_done
= nfs4_layoutcommit_done
,
6435 .rpc_release
= nfs4_layoutcommit_release
,
6439 nfs4_proc_layoutcommit(struct nfs4_layoutcommit_data
*data
, bool sync
)
6441 struct rpc_message msg
= {
6442 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LAYOUTCOMMIT
],
6443 .rpc_argp
= &data
->args
,
6444 .rpc_resp
= &data
->res
,
6445 .rpc_cred
= data
->cred
,
6447 struct rpc_task_setup task_setup_data
= {
6448 .task
= &data
->task
,
6449 .rpc_client
= NFS_CLIENT(data
->args
.inode
),
6450 .rpc_message
= &msg
,
6451 .callback_ops
= &nfs4_layoutcommit_ops
,
6452 .callback_data
= data
,
6453 .flags
= RPC_TASK_ASYNC
,
6455 struct rpc_task
*task
;
6458 dprintk("NFS: %4d initiating layoutcommit call. sync %d "
6459 "lbw: %llu inode %lu\n",
6460 data
->task
.tk_pid
, sync
,
6461 data
->args
.lastbytewritten
,
6462 data
->args
.inode
->i_ino
);
6464 nfs41_init_sequence(&data
->args
.seq_args
, &data
->res
.seq_res
, 1);
6465 task
= rpc_run_task(&task_setup_data
);
6467 return PTR_ERR(task
);
6470 status
= nfs4_wait_for_completion_rpc_task(task
);
6473 status
= task
->tk_status
;
6475 dprintk("%s: status %d\n", __func__
, status
);
6481 _nfs41_proc_secinfo_no_name(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
6482 struct nfs_fsinfo
*info
, struct nfs4_secinfo_flavors
*flavors
)
6484 struct nfs41_secinfo_no_name_args args
= {
6485 .style
= SECINFO_STYLE_CURRENT_FH
,
6487 struct nfs4_secinfo_res res
= {
6490 struct rpc_message msg
= {
6491 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SECINFO_NO_NAME
],
6495 return nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
6499 nfs41_proc_secinfo_no_name(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
6500 struct nfs_fsinfo
*info
, struct nfs4_secinfo_flavors
*flavors
)
6502 struct nfs4_exception exception
= { };
6505 err
= _nfs41_proc_secinfo_no_name(server
, fhandle
, info
, flavors
);
6508 case -NFS4ERR_WRONGSEC
:
6509 case -NFS4ERR_NOTSUPP
:
6512 err
= nfs4_handle_exception(server
, err
, &exception
);
6514 } while (exception
.retry
);
6520 nfs41_find_root_sec(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
6521 struct nfs_fsinfo
*info
)
6525 rpc_authflavor_t flavor
;
6526 struct nfs4_secinfo_flavors
*flavors
;
6528 page
= alloc_page(GFP_KERNEL
);
6534 flavors
= page_address(page
);
6535 err
= nfs41_proc_secinfo_no_name(server
, fhandle
, info
, flavors
);
6538 * Fall back on "guess and check" method if
6539 * the server doesn't support SECINFO_NO_NAME
6541 if (err
== -NFS4ERR_WRONGSEC
|| err
== -NFS4ERR_NOTSUPP
) {
6542 err
= nfs4_find_root_sec(server
, fhandle
, info
);
6548 flavor
= nfs_find_best_sec(flavors
);
6550 err
= nfs4_lookup_root_sec(server
, fhandle
, info
, flavor
);
6560 static int _nfs41_test_stateid(struct nfs_server
*server
, nfs4_stateid
*stateid
)
6563 struct nfs41_test_stateid_args args
= {
6566 struct nfs41_test_stateid_res res
;
6567 struct rpc_message msg
= {
6568 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_TEST_STATEID
],
6573 dprintk("NFS call test_stateid %p\n", stateid
);
6574 nfs41_init_sequence(&args
.seq_args
, &res
.seq_res
, 0);
6575 nfs4_set_sequence_privileged(&args
.seq_args
);
6576 status
= nfs4_call_sync_sequence(server
->client
, server
, &msg
,
6577 &args
.seq_args
, &res
.seq_res
);
6578 if (status
!= NFS_OK
) {
6579 dprintk("NFS reply test_stateid: failed, %d\n", status
);
6582 dprintk("NFS reply test_stateid: succeeded, %d\n", -res
.status
);
6587 * nfs41_test_stateid - perform a TEST_STATEID operation
6589 * @server: server / transport on which to perform the operation
6590 * @stateid: state ID to test
6592 * Returns NFS_OK if the server recognizes that "stateid" is valid.
6593 * Otherwise a negative NFS4ERR value is returned if the operation
6594 * failed or the state ID is not currently valid.
6596 static int nfs41_test_stateid(struct nfs_server
*server
, nfs4_stateid
*stateid
)
6598 struct nfs4_exception exception
= { };
6601 err
= _nfs41_test_stateid(server
, stateid
);
6602 if (err
!= -NFS4ERR_DELAY
)
6604 nfs4_handle_exception(server
, err
, &exception
);
6605 } while (exception
.retry
);
6609 static int _nfs4_free_stateid(struct nfs_server
*server
, nfs4_stateid
*stateid
)
6611 struct nfs41_free_stateid_args args
= {
6614 struct nfs41_free_stateid_res res
;
6615 struct rpc_message msg
= {
6616 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_FREE_STATEID
],
6622 dprintk("NFS call free_stateid %p\n", stateid
);
6623 nfs41_init_sequence(&args
.seq_args
, &res
.seq_res
, 0);
6624 nfs4_set_sequence_privileged(&args
.seq_args
);
6625 status
= nfs4_call_sync_sequence(server
->client
, server
, &msg
,
6626 &args
.seq_args
, &res
.seq_res
);
6627 dprintk("NFS reply free_stateid: %d\n", status
);
6632 * nfs41_free_stateid - perform a FREE_STATEID operation
6634 * @server: server / transport on which to perform the operation
6635 * @stateid: state ID to release
6637 * Returns NFS_OK if the server freed "stateid". Otherwise a
6638 * negative NFS4ERR value is returned.
6640 static int nfs41_free_stateid(struct nfs_server
*server
, nfs4_stateid
*stateid
)
6642 struct nfs4_exception exception
= { };
6645 err
= _nfs4_free_stateid(server
, stateid
);
6646 if (err
!= -NFS4ERR_DELAY
)
6648 nfs4_handle_exception(server
, err
, &exception
);
6649 } while (exception
.retry
);
6653 static bool nfs41_match_stateid(const nfs4_stateid
*s1
,
6654 const nfs4_stateid
*s2
)
6656 if (memcmp(s1
->other
, s2
->other
, sizeof(s1
->other
)) != 0)
6659 if (s1
->seqid
== s2
->seqid
)
6661 if (s1
->seqid
== 0 || s2
->seqid
== 0)
6667 #endif /* CONFIG_NFS_V4_1 */
6669 static bool nfs4_match_stateid(const nfs4_stateid
*s1
,
6670 const nfs4_stateid
*s2
)
6672 return nfs4_stateid_match(s1
, s2
);
6676 static const struct nfs4_state_recovery_ops nfs40_reboot_recovery_ops
= {
6677 .owner_flag_bit
= NFS_OWNER_RECLAIM_REBOOT
,
6678 .state_flag_bit
= NFS_STATE_RECLAIM_REBOOT
,
6679 .recover_open
= nfs4_open_reclaim
,
6680 .recover_lock
= nfs4_lock_reclaim
,
6681 .establish_clid
= nfs4_init_clientid
,
6682 .get_clid_cred
= nfs4_get_setclientid_cred
,
6683 .detect_trunking
= nfs40_discover_server_trunking
,
6686 #if defined(CONFIG_NFS_V4_1)
6687 static const struct nfs4_state_recovery_ops nfs41_reboot_recovery_ops
= {
6688 .owner_flag_bit
= NFS_OWNER_RECLAIM_REBOOT
,
6689 .state_flag_bit
= NFS_STATE_RECLAIM_REBOOT
,
6690 .recover_open
= nfs4_open_reclaim
,
6691 .recover_lock
= nfs4_lock_reclaim
,
6692 .establish_clid
= nfs41_init_clientid
,
6693 .get_clid_cred
= nfs4_get_exchange_id_cred
,
6694 .reclaim_complete
= nfs41_proc_reclaim_complete
,
6695 .detect_trunking
= nfs41_discover_server_trunking
,
6697 #endif /* CONFIG_NFS_V4_1 */
6699 static const struct nfs4_state_recovery_ops nfs40_nograce_recovery_ops
= {
6700 .owner_flag_bit
= NFS_OWNER_RECLAIM_NOGRACE
,
6701 .state_flag_bit
= NFS_STATE_RECLAIM_NOGRACE
,
6702 .recover_open
= nfs4_open_expired
,
6703 .recover_lock
= nfs4_lock_expired
,
6704 .establish_clid
= nfs4_init_clientid
,
6705 .get_clid_cred
= nfs4_get_setclientid_cred
,
6708 #if defined(CONFIG_NFS_V4_1)
6709 static const struct nfs4_state_recovery_ops nfs41_nograce_recovery_ops
= {
6710 .owner_flag_bit
= NFS_OWNER_RECLAIM_NOGRACE
,
6711 .state_flag_bit
= NFS_STATE_RECLAIM_NOGRACE
,
6712 .recover_open
= nfs41_open_expired
,
6713 .recover_lock
= nfs41_lock_expired
,
6714 .establish_clid
= nfs41_init_clientid
,
6715 .get_clid_cred
= nfs4_get_exchange_id_cred
,
6717 #endif /* CONFIG_NFS_V4_1 */
6719 static const struct nfs4_state_maintenance_ops nfs40_state_renewal_ops
= {
6720 .sched_state_renewal
= nfs4_proc_async_renew
,
6721 .get_state_renewal_cred_locked
= nfs4_get_renew_cred_locked
,
6722 .renew_lease
= nfs4_proc_renew
,
6725 #if defined(CONFIG_NFS_V4_1)
6726 static const struct nfs4_state_maintenance_ops nfs41_state_renewal_ops
= {
6727 .sched_state_renewal
= nfs41_proc_async_sequence
,
6728 .get_state_renewal_cred_locked
= nfs4_get_machine_cred_locked
,
6729 .renew_lease
= nfs4_proc_sequence
,
6733 static const struct nfs4_minor_version_ops nfs_v4_0_minor_ops
= {
6735 .call_sync
= _nfs4_call_sync
,
6736 .match_stateid
= nfs4_match_stateid
,
6737 .find_root_sec
= nfs4_find_root_sec
,
6738 .reboot_recovery_ops
= &nfs40_reboot_recovery_ops
,
6739 .nograce_recovery_ops
= &nfs40_nograce_recovery_ops
,
6740 .state_renewal_ops
= &nfs40_state_renewal_ops
,
6743 #if defined(CONFIG_NFS_V4_1)
6744 static const struct nfs4_minor_version_ops nfs_v4_1_minor_ops
= {
6746 .call_sync
= nfs4_call_sync_sequence
,
6747 .match_stateid
= nfs41_match_stateid
,
6748 .find_root_sec
= nfs41_find_root_sec
,
6749 .reboot_recovery_ops
= &nfs41_reboot_recovery_ops
,
6750 .nograce_recovery_ops
= &nfs41_nograce_recovery_ops
,
6751 .state_renewal_ops
= &nfs41_state_renewal_ops
,
6755 const struct nfs4_minor_version_ops
*nfs_v4_minor_ops
[] = {
6756 [0] = &nfs_v4_0_minor_ops
,
6757 #if defined(CONFIG_NFS_V4_1)
6758 [1] = &nfs_v4_1_minor_ops
,
6762 const struct inode_operations nfs4_dir_inode_operations
= {
6763 .create
= nfs_create
,
6764 .lookup
= nfs_lookup
,
6765 .atomic_open
= nfs_atomic_open
,
6767 .unlink
= nfs_unlink
,
6768 .symlink
= nfs_symlink
,
6772 .rename
= nfs_rename
,
6773 .permission
= nfs_permission
,
6774 .getattr
= nfs_getattr
,
6775 .setattr
= nfs_setattr
,
6776 .getxattr
= generic_getxattr
,
6777 .setxattr
= generic_setxattr
,
6778 .listxattr
= generic_listxattr
,
6779 .removexattr
= generic_removexattr
,
6782 static const struct inode_operations nfs4_file_inode_operations
= {
6783 .permission
= nfs_permission
,
6784 .getattr
= nfs_getattr
,
6785 .setattr
= nfs_setattr
,
6786 .getxattr
= generic_getxattr
,
6787 .setxattr
= generic_setxattr
,
6788 .listxattr
= generic_listxattr
,
6789 .removexattr
= generic_removexattr
,
6792 const struct nfs_rpc_ops nfs_v4_clientops
= {
6793 .version
= 4, /* protocol version */
6794 .dentry_ops
= &nfs4_dentry_operations
,
6795 .dir_inode_ops
= &nfs4_dir_inode_operations
,
6796 .file_inode_ops
= &nfs4_file_inode_operations
,
6797 .file_ops
= &nfs4_file_operations
,
6798 .getroot
= nfs4_proc_get_root
,
6799 .submount
= nfs4_submount
,
6800 .try_mount
= nfs4_try_mount
,
6801 .getattr
= nfs4_proc_getattr
,
6802 .setattr
= nfs4_proc_setattr
,
6803 .lookup
= nfs4_proc_lookup
,
6804 .access
= nfs4_proc_access
,
6805 .readlink
= nfs4_proc_readlink
,
6806 .create
= nfs4_proc_create
,
6807 .remove
= nfs4_proc_remove
,
6808 .unlink_setup
= nfs4_proc_unlink_setup
,
6809 .unlink_rpc_prepare
= nfs4_proc_unlink_rpc_prepare
,
6810 .unlink_done
= nfs4_proc_unlink_done
,
6811 .rename
= nfs4_proc_rename
,
6812 .rename_setup
= nfs4_proc_rename_setup
,
6813 .rename_rpc_prepare
= nfs4_proc_rename_rpc_prepare
,
6814 .rename_done
= nfs4_proc_rename_done
,
6815 .link
= nfs4_proc_link
,
6816 .symlink
= nfs4_proc_symlink
,
6817 .mkdir
= nfs4_proc_mkdir
,
6818 .rmdir
= nfs4_proc_remove
,
6819 .readdir
= nfs4_proc_readdir
,
6820 .mknod
= nfs4_proc_mknod
,
6821 .statfs
= nfs4_proc_statfs
,
6822 .fsinfo
= nfs4_proc_fsinfo
,
6823 .pathconf
= nfs4_proc_pathconf
,
6824 .set_capabilities
= nfs4_server_capabilities
,
6825 .decode_dirent
= nfs4_decode_dirent
,
6826 .read_setup
= nfs4_proc_read_setup
,
6827 .read_pageio_init
= pnfs_pageio_init_read
,
6828 .read_rpc_prepare
= nfs4_proc_read_rpc_prepare
,
6829 .read_done
= nfs4_read_done
,
6830 .write_setup
= nfs4_proc_write_setup
,
6831 .write_pageio_init
= pnfs_pageio_init_write
,
6832 .write_rpc_prepare
= nfs4_proc_write_rpc_prepare
,
6833 .write_done
= nfs4_write_done
,
6834 .commit_setup
= nfs4_proc_commit_setup
,
6835 .commit_rpc_prepare
= nfs4_proc_commit_rpc_prepare
,
6836 .commit_done
= nfs4_commit_done
,
6837 .lock
= nfs4_proc_lock
,
6838 .clear_acl_cache
= nfs4_zap_acl_attr
,
6839 .close_context
= nfs4_close_context
,
6840 .open_context
= nfs4_atomic_open
,
6841 .have_delegation
= nfs4_have_delegation
,
6842 .return_delegation
= nfs4_inode_return_delegation
,
6843 .alloc_client
= nfs4_alloc_client
,
6844 .init_client
= nfs4_init_client
,
6845 .free_client
= nfs4_free_client
,
6846 .create_server
= nfs4_create_server
,
6847 .clone_server
= nfs_clone_server
,
6850 static const struct xattr_handler nfs4_xattr_nfs4_acl_handler
= {
6851 .prefix
= XATTR_NAME_NFSV4_ACL
,
6852 .list
= nfs4_xattr_list_nfs4_acl
,
6853 .get
= nfs4_xattr_get_nfs4_acl
,
6854 .set
= nfs4_xattr_set_nfs4_acl
,
6857 const struct xattr_handler
*nfs4_xattr_handlers
[] = {
6858 &nfs4_xattr_nfs4_acl_handler
,