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/xattr.h>
55 #include <linux/utsname.h>
56 #include <linux/freezer.h>
59 #include "delegation.h"
65 #include "nfs4idmap.h"
66 #include "nfs4session.h"
69 #include "nfs4trace.h"
71 #define NFSDBG_FACILITY NFSDBG_PROC
73 #define NFS4_POLL_RETRY_MIN (HZ/10)
74 #define NFS4_POLL_RETRY_MAX (15*HZ)
76 /* file attributes which can be mapped to nfs attributes */
77 #define NFS4_VALID_ATTRS (ATTR_MODE \
88 static int _nfs4_proc_open(struct nfs4_opendata
*data
);
89 static int _nfs4_recover_proc_open(struct nfs4_opendata
*data
);
90 static int nfs4_do_fsinfo(struct nfs_server
*, struct nfs_fh
*, struct nfs_fsinfo
*);
91 static void nfs_fixup_referral_attributes(struct nfs_fattr
*fattr
);
92 static int nfs4_proc_getattr(struct nfs_server
*, struct nfs_fh
*, struct nfs_fattr
*, struct nfs4_label
*label
);
93 static int _nfs4_proc_getattr(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fattr
*fattr
, struct nfs4_label
*label
);
94 static int nfs4_do_setattr(struct inode
*inode
, struct rpc_cred
*cred
,
95 struct nfs_fattr
*fattr
, struct iattr
*sattr
,
96 struct nfs_open_context
*ctx
, struct nfs4_label
*ilabel
,
97 struct nfs4_label
*olabel
);
98 #ifdef CONFIG_NFS_V4_1
99 static int nfs41_test_stateid(struct nfs_server
*, nfs4_stateid
*,
101 static int nfs41_free_stateid(struct nfs_server
*, const nfs4_stateid
*,
102 struct rpc_cred
*, bool);
105 #ifdef CONFIG_NFS_V4_SECURITY_LABEL
106 static inline struct nfs4_label
*
107 nfs4_label_init_security(struct inode
*dir
, struct dentry
*dentry
,
108 struct iattr
*sattr
, struct nfs4_label
*label
)
115 if (nfs_server_capable(dir
, NFS_CAP_SECURITY_LABEL
) == 0)
118 err
= security_dentry_init_security(dentry
, sattr
->ia_mode
,
119 &dentry
->d_name
, (void **)&label
->label
, &label
->len
);
126 nfs4_label_release_security(struct nfs4_label
*label
)
129 security_release_secctx(label
->label
, label
->len
);
131 static inline u32
*nfs4_bitmask(struct nfs_server
*server
, struct nfs4_label
*label
)
134 return server
->attr_bitmask
;
136 return server
->attr_bitmask_nl
;
139 static inline struct nfs4_label
*
140 nfs4_label_init_security(struct inode
*dir
, struct dentry
*dentry
,
141 struct iattr
*sattr
, struct nfs4_label
*l
)
144 nfs4_label_release_security(struct nfs4_label
*label
)
147 nfs4_bitmask(struct nfs_server
*server
, struct nfs4_label
*label
)
148 { return server
->attr_bitmask
; }
151 /* Prevent leaks of NFSv4 errors into userland */
152 static int nfs4_map_errors(int err
)
157 case -NFS4ERR_RESOURCE
:
158 case -NFS4ERR_LAYOUTTRYLATER
:
159 case -NFS4ERR_RECALLCONFLICT
:
161 case -NFS4ERR_WRONGSEC
:
162 case -NFS4ERR_WRONG_CRED
:
164 case -NFS4ERR_BADOWNER
:
165 case -NFS4ERR_BADNAME
:
167 case -NFS4ERR_SHARE_DENIED
:
169 case -NFS4ERR_MINOR_VERS_MISMATCH
:
170 return -EPROTONOSUPPORT
;
171 case -NFS4ERR_FILE_OPEN
:
174 dprintk("%s could not handle NFSv4 error %d\n",
182 * This is our standard bitmap for GETATTR requests.
184 const u32 nfs4_fattr_bitmap
[3] = {
186 | FATTR4_WORD0_CHANGE
189 | FATTR4_WORD0_FILEID
,
191 | FATTR4_WORD1_NUMLINKS
193 | FATTR4_WORD1_OWNER_GROUP
194 | FATTR4_WORD1_RAWDEV
195 | FATTR4_WORD1_SPACE_USED
196 | FATTR4_WORD1_TIME_ACCESS
197 | FATTR4_WORD1_TIME_METADATA
198 | FATTR4_WORD1_TIME_MODIFY
199 | FATTR4_WORD1_MOUNTED_ON_FILEID
,
200 #ifdef CONFIG_NFS_V4_SECURITY_LABEL
201 FATTR4_WORD2_SECURITY_LABEL
205 static const u32 nfs4_pnfs_open_bitmap
[3] = {
207 | FATTR4_WORD0_CHANGE
210 | FATTR4_WORD0_FILEID
,
212 | FATTR4_WORD1_NUMLINKS
214 | FATTR4_WORD1_OWNER_GROUP
215 | FATTR4_WORD1_RAWDEV
216 | FATTR4_WORD1_SPACE_USED
217 | FATTR4_WORD1_TIME_ACCESS
218 | FATTR4_WORD1_TIME_METADATA
219 | FATTR4_WORD1_TIME_MODIFY
,
220 FATTR4_WORD2_MDSTHRESHOLD
221 #ifdef CONFIG_NFS_V4_SECURITY_LABEL
222 | FATTR4_WORD2_SECURITY_LABEL
226 static const u32 nfs4_open_noattr_bitmap
[3] = {
228 | FATTR4_WORD0_FILEID
,
231 const u32 nfs4_statfs_bitmap
[3] = {
232 FATTR4_WORD0_FILES_AVAIL
233 | FATTR4_WORD0_FILES_FREE
234 | FATTR4_WORD0_FILES_TOTAL
,
235 FATTR4_WORD1_SPACE_AVAIL
236 | FATTR4_WORD1_SPACE_FREE
237 | FATTR4_WORD1_SPACE_TOTAL
240 const u32 nfs4_pathconf_bitmap
[3] = {
242 | FATTR4_WORD0_MAXNAME
,
246 const u32 nfs4_fsinfo_bitmap
[3] = { FATTR4_WORD0_MAXFILESIZE
247 | FATTR4_WORD0_MAXREAD
248 | FATTR4_WORD0_MAXWRITE
249 | FATTR4_WORD0_LEASE_TIME
,
250 FATTR4_WORD1_TIME_DELTA
251 | FATTR4_WORD1_FS_LAYOUT_TYPES
,
252 FATTR4_WORD2_LAYOUT_BLKSIZE
253 | FATTR4_WORD2_CLONE_BLKSIZE
256 const u32 nfs4_fs_locations_bitmap
[3] = {
258 | FATTR4_WORD0_CHANGE
261 | FATTR4_WORD0_FILEID
262 | FATTR4_WORD0_FS_LOCATIONS
,
264 | FATTR4_WORD1_NUMLINKS
266 | FATTR4_WORD1_OWNER_GROUP
267 | FATTR4_WORD1_RAWDEV
268 | FATTR4_WORD1_SPACE_USED
269 | FATTR4_WORD1_TIME_ACCESS
270 | FATTR4_WORD1_TIME_METADATA
271 | FATTR4_WORD1_TIME_MODIFY
272 | FATTR4_WORD1_MOUNTED_ON_FILEID
,
275 static void nfs4_setup_readdir(u64 cookie
, __be32
*verifier
, struct dentry
*dentry
,
276 struct nfs4_readdir_arg
*readdir
)
281 readdir
->cookie
= cookie
;
282 memcpy(&readdir
->verifier
, verifier
, sizeof(readdir
->verifier
));
287 memset(&readdir
->verifier
, 0, sizeof(readdir
->verifier
));
292 * NFSv4 servers do not return entries for '.' and '..'
293 * Therefore, we fake these entries here. We let '.'
294 * have cookie 0 and '..' have cookie 1. Note that
295 * when talking to the server, we always send cookie 0
298 start
= p
= kmap_atomic(*readdir
->pages
);
301 *p
++ = xdr_one
; /* next */
302 *p
++ = xdr_zero
; /* cookie, first word */
303 *p
++ = xdr_one
; /* cookie, second word */
304 *p
++ = xdr_one
; /* entry len */
305 memcpy(p
, ".\0\0\0", 4); /* entry */
307 *p
++ = xdr_one
; /* bitmap length */
308 *p
++ = htonl(FATTR4_WORD0_FILEID
); /* bitmap */
309 *p
++ = htonl(8); /* attribute buffer length */
310 p
= xdr_encode_hyper(p
, NFS_FILEID(d_inode(dentry
)));
313 *p
++ = xdr_one
; /* next */
314 *p
++ = xdr_zero
; /* cookie, first word */
315 *p
++ = xdr_two
; /* cookie, second word */
316 *p
++ = xdr_two
; /* entry len */
317 memcpy(p
, "..\0\0", 4); /* entry */
319 *p
++ = xdr_one
; /* bitmap length */
320 *p
++ = htonl(FATTR4_WORD0_FILEID
); /* bitmap */
321 *p
++ = htonl(8); /* attribute buffer length */
322 p
= xdr_encode_hyper(p
, NFS_FILEID(d_inode(dentry
->d_parent
)));
324 readdir
->pgbase
= (char *)p
- (char *)start
;
325 readdir
->count
-= readdir
->pgbase
;
326 kunmap_atomic(start
);
329 static void nfs4_test_and_free_stateid(struct nfs_server
*server
,
330 nfs4_stateid
*stateid
,
331 struct rpc_cred
*cred
)
333 const struct nfs4_minor_version_ops
*ops
= server
->nfs_client
->cl_mvops
;
335 ops
->test_and_free_expired(server
, stateid
, cred
);
338 static void __nfs4_free_revoked_stateid(struct nfs_server
*server
,
339 nfs4_stateid
*stateid
,
340 struct rpc_cred
*cred
)
342 stateid
->type
= NFS4_REVOKED_STATEID_TYPE
;
343 nfs4_test_and_free_stateid(server
, stateid
, cred
);
346 static void nfs4_free_revoked_stateid(struct nfs_server
*server
,
347 const nfs4_stateid
*stateid
,
348 struct rpc_cred
*cred
)
352 nfs4_stateid_copy(&tmp
, stateid
);
353 __nfs4_free_revoked_stateid(server
, &tmp
, cred
);
356 static long nfs4_update_delay(long *timeout
)
360 return NFS4_POLL_RETRY_MAX
;
362 *timeout
= NFS4_POLL_RETRY_MIN
;
363 if (*timeout
> NFS4_POLL_RETRY_MAX
)
364 *timeout
= NFS4_POLL_RETRY_MAX
;
370 static int nfs4_delay(struct rpc_clnt
*clnt
, long *timeout
)
376 freezable_schedule_timeout_killable_unsafe(
377 nfs4_update_delay(timeout
));
378 if (fatal_signal_pending(current
))
383 /* This is the error handling routine for processes that are allowed
386 static int nfs4_do_handle_exception(struct nfs_server
*server
,
387 int errorcode
, struct nfs4_exception
*exception
)
389 struct nfs_client
*clp
= server
->nfs_client
;
390 struct nfs4_state
*state
= exception
->state
;
391 const nfs4_stateid
*stateid
= exception
->stateid
;
392 struct inode
*inode
= exception
->inode
;
395 exception
->delay
= 0;
396 exception
->recovering
= 0;
397 exception
->retry
= 0;
399 if (stateid
== NULL
&& state
!= NULL
)
400 stateid
= &state
->stateid
;
405 case -NFS4ERR_DELEG_REVOKED
:
406 case -NFS4ERR_ADMIN_REVOKED
:
407 case -NFS4ERR_EXPIRED
:
408 case -NFS4ERR_BAD_STATEID
:
409 if (inode
!= NULL
&& stateid
!= NULL
) {
410 nfs_inode_find_state_and_recover(inode
,
412 goto wait_on_recovery
;
414 case -NFS4ERR_OPENMODE
:
418 err
= nfs_async_inode_return_delegation(inode
,
421 goto wait_on_recovery
;
422 if (stateid
!= NULL
&& stateid
->type
== NFS4_DELEGATION_STATEID_TYPE
) {
423 exception
->retry
= 1;
429 ret
= nfs4_schedule_stateid_recovery(server
, state
);
432 goto wait_on_recovery
;
433 case -NFS4ERR_STALE_STATEID
:
434 case -NFS4ERR_STALE_CLIENTID
:
435 nfs4_schedule_lease_recovery(clp
);
436 goto wait_on_recovery
;
438 ret
= nfs4_schedule_migration_recovery(server
);
441 goto wait_on_recovery
;
442 case -NFS4ERR_LEASE_MOVED
:
443 nfs4_schedule_lease_moved_recovery(clp
);
444 goto wait_on_recovery
;
445 #if defined(CONFIG_NFS_V4_1)
446 case -NFS4ERR_BADSESSION
:
447 case -NFS4ERR_BADSLOT
:
448 case -NFS4ERR_BAD_HIGH_SLOT
:
449 case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION
:
450 case -NFS4ERR_DEADSESSION
:
451 case -NFS4ERR_SEQ_FALSE_RETRY
:
452 case -NFS4ERR_SEQ_MISORDERED
:
453 dprintk("%s ERROR: %d Reset session\n", __func__
,
455 nfs4_schedule_session_recovery(clp
->cl_session
, errorcode
);
456 goto wait_on_recovery
;
457 #endif /* defined(CONFIG_NFS_V4_1) */
458 case -NFS4ERR_FILE_OPEN
:
459 if (exception
->timeout
> HZ
) {
460 /* We have retried a decent amount, time to
467 nfs_inc_server_stats(server
, NFSIOS_DELAY
);
469 case -NFS4ERR_LAYOUTTRYLATER
:
470 case -NFS4ERR_RECALLCONFLICT
:
471 exception
->delay
= 1;
474 case -NFS4ERR_RETRY_UNCACHED_REP
:
475 case -NFS4ERR_OLD_STATEID
:
476 exception
->retry
= 1;
478 case -NFS4ERR_BADOWNER
:
479 /* The following works around a Linux server bug! */
480 case -NFS4ERR_BADNAME
:
481 if (server
->caps
& NFS_CAP_UIDGID_NOMAP
) {
482 server
->caps
&= ~NFS_CAP_UIDGID_NOMAP
;
483 exception
->retry
= 1;
484 printk(KERN_WARNING
"NFS: v4 server %s "
485 "does not accept raw "
487 "Reenabling the idmapper.\n",
488 server
->nfs_client
->cl_hostname
);
491 /* We failed to handle the error */
492 return nfs4_map_errors(ret
);
494 exception
->recovering
= 1;
498 /* This is the error handling routine for processes that are allowed
501 int nfs4_handle_exception(struct nfs_server
*server
, int errorcode
, struct nfs4_exception
*exception
)
503 struct nfs_client
*clp
= server
->nfs_client
;
506 ret
= nfs4_do_handle_exception(server
, errorcode
, exception
);
507 if (exception
->delay
) {
508 ret
= nfs4_delay(server
->client
, &exception
->timeout
);
511 if (exception
->recovering
) {
512 ret
= nfs4_wait_clnt_recover(clp
);
513 if (test_bit(NFS_MIG_FAILED
, &server
->mig_status
))
520 exception
->retry
= 1;
525 nfs4_async_handle_exception(struct rpc_task
*task
, struct nfs_server
*server
,
526 int errorcode
, struct nfs4_exception
*exception
)
528 struct nfs_client
*clp
= server
->nfs_client
;
531 ret
= nfs4_do_handle_exception(server
, errorcode
, exception
);
532 if (exception
->delay
) {
533 rpc_delay(task
, nfs4_update_delay(&exception
->timeout
));
536 if (exception
->recovering
) {
537 rpc_sleep_on(&clp
->cl_rpcwaitq
, task
, NULL
);
538 if (test_bit(NFS4CLNT_MANAGER_RUNNING
, &clp
->cl_state
) == 0)
539 rpc_wake_up_queued_task(&clp
->cl_rpcwaitq
, task
);
542 if (test_bit(NFS_MIG_FAILED
, &server
->mig_status
))
547 exception
->retry
= 1;
552 nfs4_async_handle_error(struct rpc_task
*task
, struct nfs_server
*server
,
553 struct nfs4_state
*state
, long *timeout
)
555 struct nfs4_exception exception
= {
559 if (task
->tk_status
>= 0)
562 exception
.timeout
= *timeout
;
563 task
->tk_status
= nfs4_async_handle_exception(task
, server
,
566 if (exception
.delay
&& timeout
)
567 *timeout
= exception
.timeout
;
574 * Return 'true' if 'clp' is using an rpc_client that is integrity protected
575 * or 'false' otherwise.
577 static bool _nfs4_is_integrity_protected(struct nfs_client
*clp
)
579 rpc_authflavor_t flavor
= clp
->cl_rpcclient
->cl_auth
->au_flavor
;
581 if (flavor
== RPC_AUTH_GSS_KRB5I
||
582 flavor
== RPC_AUTH_GSS_KRB5P
)
588 static void do_renew_lease(struct nfs_client
*clp
, unsigned long timestamp
)
590 spin_lock(&clp
->cl_lock
);
591 if (time_before(clp
->cl_last_renewal
,timestamp
))
592 clp
->cl_last_renewal
= timestamp
;
593 spin_unlock(&clp
->cl_lock
);
596 static void renew_lease(const struct nfs_server
*server
, unsigned long timestamp
)
598 struct nfs_client
*clp
= server
->nfs_client
;
600 if (!nfs4_has_session(clp
))
601 do_renew_lease(clp
, timestamp
);
604 struct nfs4_call_sync_data
{
605 const struct nfs_server
*seq_server
;
606 struct nfs4_sequence_args
*seq_args
;
607 struct nfs4_sequence_res
*seq_res
;
610 void nfs4_init_sequence(struct nfs4_sequence_args
*args
,
611 struct nfs4_sequence_res
*res
, int cache_reply
)
613 args
->sa_slot
= NULL
;
614 args
->sa_cache_this
= cache_reply
;
615 args
->sa_privileged
= 0;
620 static void nfs4_set_sequence_privileged(struct nfs4_sequence_args
*args
)
622 args
->sa_privileged
= 1;
625 int nfs40_setup_sequence(struct nfs4_slot_table
*tbl
,
626 struct nfs4_sequence_args
*args
,
627 struct nfs4_sequence_res
*res
,
628 struct rpc_task
*task
)
630 struct nfs4_slot
*slot
;
632 /* slot already allocated? */
633 if (res
->sr_slot
!= NULL
)
636 spin_lock(&tbl
->slot_tbl_lock
);
637 if (nfs4_slot_tbl_draining(tbl
) && !args
->sa_privileged
)
640 slot
= nfs4_alloc_slot(tbl
);
642 if (slot
== ERR_PTR(-ENOMEM
))
643 task
->tk_timeout
= HZ
>> 2;
646 spin_unlock(&tbl
->slot_tbl_lock
);
648 slot
->privileged
= args
->sa_privileged
? 1 : 0;
649 args
->sa_slot
= slot
;
653 rpc_call_start(task
);
657 if (args
->sa_privileged
)
658 rpc_sleep_on_priority(&tbl
->slot_tbl_waitq
, task
,
659 NULL
, RPC_PRIORITY_PRIVILEGED
);
661 rpc_sleep_on(&tbl
->slot_tbl_waitq
, task
, NULL
);
662 spin_unlock(&tbl
->slot_tbl_lock
);
665 EXPORT_SYMBOL_GPL(nfs40_setup_sequence
);
667 static void nfs40_sequence_free_slot(struct nfs4_sequence_res
*res
)
669 struct nfs4_slot
*slot
= res
->sr_slot
;
670 struct nfs4_slot_table
*tbl
;
673 spin_lock(&tbl
->slot_tbl_lock
);
674 if (!nfs41_wake_and_assign_slot(tbl
, slot
))
675 nfs4_free_slot(tbl
, slot
);
676 spin_unlock(&tbl
->slot_tbl_lock
);
681 static int nfs40_sequence_done(struct rpc_task
*task
,
682 struct nfs4_sequence_res
*res
)
684 if (res
->sr_slot
!= NULL
)
685 nfs40_sequence_free_slot(res
);
689 #if defined(CONFIG_NFS_V4_1)
691 static void nfs41_sequence_free_slot(struct nfs4_sequence_res
*res
)
693 struct nfs4_session
*session
;
694 struct nfs4_slot_table
*tbl
;
695 struct nfs4_slot
*slot
= res
->sr_slot
;
696 bool send_new_highest_used_slotid
= false;
699 session
= tbl
->session
;
701 /* Bump the slot sequence number */
706 spin_lock(&tbl
->slot_tbl_lock
);
707 /* Be nice to the server: try to ensure that the last transmitted
708 * value for highest_user_slotid <= target_highest_slotid
710 if (tbl
->highest_used_slotid
> tbl
->target_highest_slotid
)
711 send_new_highest_used_slotid
= true;
713 if (nfs41_wake_and_assign_slot(tbl
, slot
)) {
714 send_new_highest_used_slotid
= false;
717 nfs4_free_slot(tbl
, slot
);
719 if (tbl
->highest_used_slotid
!= NFS4_NO_SLOT
)
720 send_new_highest_used_slotid
= false;
722 spin_unlock(&tbl
->slot_tbl_lock
);
724 if (send_new_highest_used_slotid
)
725 nfs41_notify_server(session
->clp
);
726 if (waitqueue_active(&tbl
->slot_waitq
))
727 wake_up_all(&tbl
->slot_waitq
);
730 static int nfs41_sequence_process(struct rpc_task
*task
,
731 struct nfs4_sequence_res
*res
)
733 struct nfs4_session
*session
;
734 struct nfs4_slot
*slot
= res
->sr_slot
;
735 struct nfs_client
*clp
;
736 bool interrupted
= false;
741 /* don't increment the sequence number if the task wasn't sent */
742 if (!RPC_WAS_SENT(task
))
745 session
= slot
->table
->session
;
747 if (slot
->interrupted
) {
748 slot
->interrupted
= 0;
752 trace_nfs4_sequence_done(session
, res
);
753 /* Check the SEQUENCE operation status */
754 switch (res
->sr_status
) {
756 /* If previous op on slot was interrupted and we reused
757 * the seq# and got a reply from the cache, then retry
759 if (task
->tk_status
== -EREMOTEIO
&& interrupted
) {
763 /* Update the slot's sequence and clientid lease timer */
766 do_renew_lease(clp
, res
->sr_timestamp
);
767 /* Check sequence flags */
768 nfs41_handle_sequence_flag_errors(clp
, res
->sr_status_flags
,
770 nfs41_update_target_slotid(slot
->table
, slot
, res
);
774 * sr_status remains 1 if an RPC level error occurred.
775 * The server may or may not have processed the sequence
777 * Mark the slot as having hosted an interrupted RPC call.
779 slot
->interrupted
= 1;
782 /* The server detected a resend of the RPC call and
783 * returned NFS4ERR_DELAY as per Section 2.10.6.2
786 dprintk("%s: slot=%u seq=%u: Operation in progress\n",
791 case -NFS4ERR_BADSLOT
:
793 * The slot id we used was probably retired. Try again
794 * using a different slot id.
797 case -NFS4ERR_SEQ_MISORDERED
:
799 * Was the last operation on this sequence interrupted?
800 * If so, retry after bumping the sequence number.
807 * Could this slot have been previously retired?
808 * If so, then the server may be expecting seq_nr = 1!
810 if (slot
->seq_nr
!= 1) {
815 case -NFS4ERR_SEQ_FALSE_RETRY
:
818 case -NFS4ERR_DEADSESSION
:
819 case -NFS4ERR_BADSESSION
:
820 nfs4_schedule_session_recovery(session
, res
->sr_status
);
823 /* Just update the slot sequence no. */
827 /* The session may be reset by one of the error handlers. */
828 dprintk("%s: Error %d free the slot \n", __func__
, res
->sr_status
);
832 if (rpc_restart_call_prepare(task
)) {
833 nfs41_sequence_free_slot(res
);
839 if (!rpc_restart_call(task
))
841 rpc_delay(task
, NFS4_POLL_RETRY_MAX
);
845 int nfs41_sequence_done(struct rpc_task
*task
, struct nfs4_sequence_res
*res
)
847 if (!nfs41_sequence_process(task
, res
))
849 if (res
->sr_slot
!= NULL
)
850 nfs41_sequence_free_slot(res
);
854 EXPORT_SYMBOL_GPL(nfs41_sequence_done
);
856 static int nfs4_sequence_process(struct rpc_task
*task
, struct nfs4_sequence_res
*res
)
858 if (res
->sr_slot
== NULL
)
860 if (res
->sr_slot
->table
->session
!= NULL
)
861 return nfs41_sequence_process(task
, res
);
862 return nfs40_sequence_done(task
, res
);
865 static void nfs4_sequence_free_slot(struct nfs4_sequence_res
*res
)
867 if (res
->sr_slot
!= NULL
) {
868 if (res
->sr_slot
->table
->session
!= NULL
)
869 nfs41_sequence_free_slot(res
);
871 nfs40_sequence_free_slot(res
);
875 int nfs4_sequence_done(struct rpc_task
*task
, struct nfs4_sequence_res
*res
)
877 if (res
->sr_slot
== NULL
)
879 if (!res
->sr_slot
->table
->session
)
880 return nfs40_sequence_done(task
, res
);
881 return nfs41_sequence_done(task
, res
);
883 EXPORT_SYMBOL_GPL(nfs4_sequence_done
);
885 int nfs41_setup_sequence(struct nfs4_session
*session
,
886 struct nfs4_sequence_args
*args
,
887 struct nfs4_sequence_res
*res
,
888 struct rpc_task
*task
)
890 struct nfs4_slot
*slot
;
891 struct nfs4_slot_table
*tbl
;
893 dprintk("--> %s\n", __func__
);
894 /* slot already allocated? */
895 if (res
->sr_slot
!= NULL
)
898 tbl
= &session
->fc_slot_table
;
900 task
->tk_timeout
= 0;
902 spin_lock(&tbl
->slot_tbl_lock
);
903 if (test_bit(NFS4_SLOT_TBL_DRAINING
, &tbl
->slot_tbl_state
) &&
904 !args
->sa_privileged
) {
905 /* The state manager will wait until the slot table is empty */
906 dprintk("%s session is draining\n", __func__
);
910 slot
= nfs4_alloc_slot(tbl
);
912 /* If out of memory, try again in 1/4 second */
913 if (slot
== ERR_PTR(-ENOMEM
))
914 task
->tk_timeout
= HZ
>> 2;
915 dprintk("<-- %s: no free slots\n", __func__
);
918 spin_unlock(&tbl
->slot_tbl_lock
);
920 slot
->privileged
= args
->sa_privileged
? 1 : 0;
921 args
->sa_slot
= slot
;
923 dprintk("<-- %s slotid=%u seqid=%u\n", __func__
,
924 slot
->slot_nr
, slot
->seq_nr
);
927 res
->sr_timestamp
= jiffies
;
928 res
->sr_status_flags
= 0;
930 * sr_status is only set in decode_sequence, and so will remain
931 * set to 1 if an rpc level failure occurs.
934 trace_nfs4_setup_sequence(session
, args
);
936 rpc_call_start(task
);
939 /* Privileged tasks are queued with top priority */
940 if (args
->sa_privileged
)
941 rpc_sleep_on_priority(&tbl
->slot_tbl_waitq
, task
,
942 NULL
, RPC_PRIORITY_PRIVILEGED
);
944 rpc_sleep_on(&tbl
->slot_tbl_waitq
, task
, NULL
);
945 spin_unlock(&tbl
->slot_tbl_lock
);
948 EXPORT_SYMBOL_GPL(nfs41_setup_sequence
);
950 static int nfs4_setup_sequence(const struct nfs_server
*server
,
951 struct nfs4_sequence_args
*args
,
952 struct nfs4_sequence_res
*res
,
953 struct rpc_task
*task
)
955 struct nfs4_session
*session
= nfs4_get_session(server
);
959 return nfs40_setup_sequence(server
->nfs_client
->cl_slot_tbl
,
962 dprintk("--> %s clp %p session %p sr_slot %u\n",
963 __func__
, session
->clp
, session
, res
->sr_slot
?
964 res
->sr_slot
->slot_nr
: NFS4_NO_SLOT
);
966 ret
= nfs41_setup_sequence(session
, args
, res
, task
);
968 dprintk("<-- %s status=%d\n", __func__
, ret
);
972 static void nfs41_call_sync_prepare(struct rpc_task
*task
, void *calldata
)
974 struct nfs4_call_sync_data
*data
= calldata
;
975 struct nfs4_session
*session
= nfs4_get_session(data
->seq_server
);
977 dprintk("--> %s data->seq_server %p\n", __func__
, data
->seq_server
);
979 nfs41_setup_sequence(session
, data
->seq_args
, data
->seq_res
, task
);
982 static void nfs41_call_sync_done(struct rpc_task
*task
, void *calldata
)
984 struct nfs4_call_sync_data
*data
= calldata
;
986 nfs41_sequence_done(task
, data
->seq_res
);
989 static const struct rpc_call_ops nfs41_call_sync_ops
= {
990 .rpc_call_prepare
= nfs41_call_sync_prepare
,
991 .rpc_call_done
= nfs41_call_sync_done
,
994 #else /* !CONFIG_NFS_V4_1 */
996 static int nfs4_setup_sequence(const struct nfs_server
*server
,
997 struct nfs4_sequence_args
*args
,
998 struct nfs4_sequence_res
*res
,
999 struct rpc_task
*task
)
1001 return nfs40_setup_sequence(server
->nfs_client
->cl_slot_tbl
,
1005 static int nfs4_sequence_process(struct rpc_task
*task
, struct nfs4_sequence_res
*res
)
1007 return nfs40_sequence_done(task
, res
);
1010 static void nfs4_sequence_free_slot(struct nfs4_sequence_res
*res
)
1012 if (res
->sr_slot
!= NULL
)
1013 nfs40_sequence_free_slot(res
);
1016 int nfs4_sequence_done(struct rpc_task
*task
,
1017 struct nfs4_sequence_res
*res
)
1019 return nfs40_sequence_done(task
, res
);
1021 EXPORT_SYMBOL_GPL(nfs4_sequence_done
);
1023 #endif /* !CONFIG_NFS_V4_1 */
1025 static void nfs40_call_sync_prepare(struct rpc_task
*task
, void *calldata
)
1027 struct nfs4_call_sync_data
*data
= calldata
;
1028 nfs4_setup_sequence(data
->seq_server
,
1029 data
->seq_args
, data
->seq_res
, task
);
1032 static void nfs40_call_sync_done(struct rpc_task
*task
, void *calldata
)
1034 struct nfs4_call_sync_data
*data
= calldata
;
1035 nfs4_sequence_done(task
, data
->seq_res
);
1038 static const struct rpc_call_ops nfs40_call_sync_ops
= {
1039 .rpc_call_prepare
= nfs40_call_sync_prepare
,
1040 .rpc_call_done
= nfs40_call_sync_done
,
1043 static int nfs4_call_sync_sequence(struct rpc_clnt
*clnt
,
1044 struct nfs_server
*server
,
1045 struct rpc_message
*msg
,
1046 struct nfs4_sequence_args
*args
,
1047 struct nfs4_sequence_res
*res
)
1050 struct rpc_task
*task
;
1051 struct nfs_client
*clp
= server
->nfs_client
;
1052 struct nfs4_call_sync_data data
= {
1053 .seq_server
= server
,
1057 struct rpc_task_setup task_setup
= {
1060 .callback_ops
= clp
->cl_mvops
->call_sync_ops
,
1061 .callback_data
= &data
1064 task
= rpc_run_task(&task_setup
);
1066 ret
= PTR_ERR(task
);
1068 ret
= task
->tk_status
;
1074 int nfs4_call_sync(struct rpc_clnt
*clnt
,
1075 struct nfs_server
*server
,
1076 struct rpc_message
*msg
,
1077 struct nfs4_sequence_args
*args
,
1078 struct nfs4_sequence_res
*res
,
1081 nfs4_init_sequence(args
, res
, cache_reply
);
1082 return nfs4_call_sync_sequence(clnt
, server
, msg
, args
, res
);
1085 static void update_changeattr(struct inode
*dir
, struct nfs4_change_info
*cinfo
,
1086 unsigned long timestamp
)
1088 struct nfs_inode
*nfsi
= NFS_I(dir
);
1090 spin_lock(&dir
->i_lock
);
1091 nfsi
->cache_validity
|= NFS_INO_INVALID_ATTR
|NFS_INO_INVALID_DATA
;
1092 if (cinfo
->atomic
&& cinfo
->before
== dir
->i_version
) {
1093 nfsi
->cache_validity
&= ~NFS_INO_REVAL_PAGECACHE
;
1094 nfsi
->attrtimeo_timestamp
= jiffies
;
1096 nfs_force_lookup_revalidate(dir
);
1097 if (cinfo
->before
!= dir
->i_version
)
1098 nfsi
->cache_validity
|= NFS_INO_INVALID_ACCESS
|
1099 NFS_INO_INVALID_ACL
;
1101 dir
->i_version
= cinfo
->after
;
1102 nfsi
->read_cache_jiffies
= timestamp
;
1103 nfsi
->attr_gencount
= nfs_inc_attr_generation_counter();
1104 nfs_fscache_invalidate(dir
);
1105 spin_unlock(&dir
->i_lock
);
1108 struct nfs4_opendata
{
1110 struct nfs_openargs o_arg
;
1111 struct nfs_openres o_res
;
1112 struct nfs_open_confirmargs c_arg
;
1113 struct nfs_open_confirmres c_res
;
1114 struct nfs4_string owner_name
;
1115 struct nfs4_string group_name
;
1116 struct nfs4_label
*a_label
;
1117 struct nfs_fattr f_attr
;
1118 struct nfs4_label
*f_label
;
1120 struct dentry
*dentry
;
1121 struct nfs4_state_owner
*owner
;
1122 struct nfs4_state
*state
;
1124 unsigned long timestamp
;
1125 unsigned int rpc_done
: 1;
1126 unsigned int file_created
: 1;
1127 unsigned int is_recover
: 1;
1132 static bool nfs4_clear_cap_atomic_open_v1(struct nfs_server
*server
,
1133 int err
, struct nfs4_exception
*exception
)
1137 if (!(server
->caps
& NFS_CAP_ATOMIC_OPEN_V1
))
1139 server
->caps
&= ~NFS_CAP_ATOMIC_OPEN_V1
;
1140 exception
->retry
= 1;
1145 nfs4_map_atomic_open_share(struct nfs_server
*server
,
1146 fmode_t fmode
, int openflags
)
1150 switch (fmode
& (FMODE_READ
| FMODE_WRITE
)) {
1152 res
= NFS4_SHARE_ACCESS_READ
;
1155 res
= NFS4_SHARE_ACCESS_WRITE
;
1157 case FMODE_READ
|FMODE_WRITE
:
1158 res
= NFS4_SHARE_ACCESS_BOTH
;
1160 if (!(server
->caps
& NFS_CAP_ATOMIC_OPEN_V1
))
1162 /* Want no delegation if we're using O_DIRECT */
1163 if (openflags
& O_DIRECT
)
1164 res
|= NFS4_SHARE_WANT_NO_DELEG
;
1169 static enum open_claim_type4
1170 nfs4_map_atomic_open_claim(struct nfs_server
*server
,
1171 enum open_claim_type4 claim
)
1173 if (server
->caps
& NFS_CAP_ATOMIC_OPEN_V1
)
1178 case NFS4_OPEN_CLAIM_FH
:
1179 return NFS4_OPEN_CLAIM_NULL
;
1180 case NFS4_OPEN_CLAIM_DELEG_CUR_FH
:
1181 return NFS4_OPEN_CLAIM_DELEGATE_CUR
;
1182 case NFS4_OPEN_CLAIM_DELEG_PREV_FH
:
1183 return NFS4_OPEN_CLAIM_DELEGATE_PREV
;
1187 static void nfs4_init_opendata_res(struct nfs4_opendata
*p
)
1189 p
->o_res
.f_attr
= &p
->f_attr
;
1190 p
->o_res
.f_label
= p
->f_label
;
1191 p
->o_res
.seqid
= p
->o_arg
.seqid
;
1192 p
->c_res
.seqid
= p
->c_arg
.seqid
;
1193 p
->o_res
.server
= p
->o_arg
.server
;
1194 p
->o_res
.access_request
= p
->o_arg
.access
;
1195 nfs_fattr_init(&p
->f_attr
);
1196 nfs_fattr_init_names(&p
->f_attr
, &p
->owner_name
, &p
->group_name
);
1199 static struct nfs4_opendata
*nfs4_opendata_alloc(struct dentry
*dentry
,
1200 struct nfs4_state_owner
*sp
, fmode_t fmode
, int flags
,
1201 const struct iattr
*attrs
,
1202 struct nfs4_label
*label
,
1203 enum open_claim_type4 claim
,
1206 struct dentry
*parent
= dget_parent(dentry
);
1207 struct inode
*dir
= d_inode(parent
);
1208 struct nfs_server
*server
= NFS_SERVER(dir
);
1209 struct nfs_seqid
*(*alloc_seqid
)(struct nfs_seqid_counter
*, gfp_t
);
1210 struct nfs4_opendata
*p
;
1212 p
= kzalloc(sizeof(*p
), gfp_mask
);
1216 p
->f_label
= nfs4_label_alloc(server
, gfp_mask
);
1217 if (IS_ERR(p
->f_label
))
1220 p
->a_label
= nfs4_label_alloc(server
, gfp_mask
);
1221 if (IS_ERR(p
->a_label
))
1224 alloc_seqid
= server
->nfs_client
->cl_mvops
->alloc_seqid
;
1225 p
->o_arg
.seqid
= alloc_seqid(&sp
->so_seqid
, gfp_mask
);
1226 if (IS_ERR(p
->o_arg
.seqid
))
1227 goto err_free_label
;
1228 nfs_sb_active(dentry
->d_sb
);
1229 p
->dentry
= dget(dentry
);
1232 atomic_inc(&sp
->so_count
);
1233 p
->o_arg
.open_flags
= flags
;
1234 p
->o_arg
.fmode
= fmode
& (FMODE_READ
|FMODE_WRITE
);
1235 p
->o_arg
.umask
= current_umask();
1236 p
->o_arg
.claim
= nfs4_map_atomic_open_claim(server
, claim
);
1237 p
->o_arg
.share_access
= nfs4_map_atomic_open_share(server
,
1239 /* don't put an ACCESS op in OPEN compound if O_EXCL, because ACCESS
1240 * will return permission denied for all bits until close */
1241 if (!(flags
& O_EXCL
)) {
1242 /* ask server to check for all possible rights as results
1244 switch (p
->o_arg
.claim
) {
1247 case NFS4_OPEN_CLAIM_NULL
:
1248 case NFS4_OPEN_CLAIM_FH
:
1249 p
->o_arg
.access
= NFS4_ACCESS_READ
|
1250 NFS4_ACCESS_MODIFY
|
1251 NFS4_ACCESS_EXTEND
|
1252 NFS4_ACCESS_EXECUTE
;
1255 p
->o_arg
.clientid
= server
->nfs_client
->cl_clientid
;
1256 p
->o_arg
.id
.create_time
= ktime_to_ns(sp
->so_seqid
.create_time
);
1257 p
->o_arg
.id
.uniquifier
= sp
->so_seqid
.owner_id
;
1258 p
->o_arg
.name
= &dentry
->d_name
;
1259 p
->o_arg
.server
= server
;
1260 p
->o_arg
.bitmask
= nfs4_bitmask(server
, label
);
1261 p
->o_arg
.open_bitmap
= &nfs4_fattr_bitmap
[0];
1262 p
->o_arg
.label
= nfs4_label_copy(p
->a_label
, label
);
1263 switch (p
->o_arg
.claim
) {
1264 case NFS4_OPEN_CLAIM_NULL
:
1265 case NFS4_OPEN_CLAIM_DELEGATE_CUR
:
1266 case NFS4_OPEN_CLAIM_DELEGATE_PREV
:
1267 p
->o_arg
.fh
= NFS_FH(dir
);
1269 case NFS4_OPEN_CLAIM_PREVIOUS
:
1270 case NFS4_OPEN_CLAIM_FH
:
1271 case NFS4_OPEN_CLAIM_DELEG_CUR_FH
:
1272 case NFS4_OPEN_CLAIM_DELEG_PREV_FH
:
1273 p
->o_arg
.fh
= NFS_FH(d_inode(dentry
));
1275 if (attrs
!= NULL
&& attrs
->ia_valid
!= 0) {
1278 p
->o_arg
.u
.attrs
= &p
->attrs
;
1279 memcpy(&p
->attrs
, attrs
, sizeof(p
->attrs
));
1282 verf
[1] = current
->pid
;
1283 memcpy(p
->o_arg
.u
.verifier
.data
, verf
,
1284 sizeof(p
->o_arg
.u
.verifier
.data
));
1286 p
->c_arg
.fh
= &p
->o_res
.fh
;
1287 p
->c_arg
.stateid
= &p
->o_res
.stateid
;
1288 p
->c_arg
.seqid
= p
->o_arg
.seqid
;
1289 nfs4_init_opendata_res(p
);
1290 kref_init(&p
->kref
);
1294 nfs4_label_free(p
->a_label
);
1296 nfs4_label_free(p
->f_label
);
1304 static void nfs4_opendata_free(struct kref
*kref
)
1306 struct nfs4_opendata
*p
= container_of(kref
,
1307 struct nfs4_opendata
, kref
);
1308 struct super_block
*sb
= p
->dentry
->d_sb
;
1310 nfs_free_seqid(p
->o_arg
.seqid
);
1311 nfs4_sequence_free_slot(&p
->o_res
.seq_res
);
1312 if (p
->state
!= NULL
)
1313 nfs4_put_open_state(p
->state
);
1314 nfs4_put_state_owner(p
->owner
);
1316 nfs4_label_free(p
->a_label
);
1317 nfs4_label_free(p
->f_label
);
1321 nfs_sb_deactive(sb
);
1322 nfs_fattr_free_names(&p
->f_attr
);
1323 kfree(p
->f_attr
.mdsthreshold
);
1327 static void nfs4_opendata_put(struct nfs4_opendata
*p
)
1330 kref_put(&p
->kref
, nfs4_opendata_free
);
1333 static int nfs4_wait_for_completion_rpc_task(struct rpc_task
*task
)
1337 ret
= rpc_wait_for_completion_task(task
);
1341 static bool nfs4_mode_match_open_stateid(struct nfs4_state
*state
,
1344 switch(fmode
& (FMODE_READ
|FMODE_WRITE
)) {
1345 case FMODE_READ
|FMODE_WRITE
:
1346 return state
->n_rdwr
!= 0;
1348 return state
->n_wronly
!= 0;
1350 return state
->n_rdonly
!= 0;
1356 static int can_open_cached(struct nfs4_state
*state
, fmode_t mode
, int open_mode
)
1360 if (open_mode
& (O_EXCL
|O_TRUNC
))
1362 switch (mode
& (FMODE_READ
|FMODE_WRITE
)) {
1364 ret
|= test_bit(NFS_O_RDONLY_STATE
, &state
->flags
) != 0
1365 && state
->n_rdonly
!= 0;
1368 ret
|= test_bit(NFS_O_WRONLY_STATE
, &state
->flags
) != 0
1369 && state
->n_wronly
!= 0;
1371 case FMODE_READ
|FMODE_WRITE
:
1372 ret
|= test_bit(NFS_O_RDWR_STATE
, &state
->flags
) != 0
1373 && state
->n_rdwr
!= 0;
1379 static int can_open_delegated(struct nfs_delegation
*delegation
, fmode_t fmode
,
1380 enum open_claim_type4 claim
)
1382 if (delegation
== NULL
)
1384 if ((delegation
->type
& fmode
) != fmode
)
1386 if (test_bit(NFS_DELEGATION_RETURNING
, &delegation
->flags
))
1389 case NFS4_OPEN_CLAIM_NULL
:
1390 case NFS4_OPEN_CLAIM_FH
:
1392 case NFS4_OPEN_CLAIM_PREVIOUS
:
1393 if (!test_bit(NFS_DELEGATION_NEED_RECLAIM
, &delegation
->flags
))
1398 nfs_mark_delegation_referenced(delegation
);
1402 static void update_open_stateflags(struct nfs4_state
*state
, fmode_t fmode
)
1411 case FMODE_READ
|FMODE_WRITE
:
1414 nfs4_state_set_mode_locked(state
, state
->state
| fmode
);
1417 #ifdef CONFIG_NFS_V4_1
1418 static bool nfs_open_stateid_recover_openmode(struct nfs4_state
*state
)
1420 if (state
->n_rdonly
&& !test_bit(NFS_O_RDONLY_STATE
, &state
->flags
))
1422 if (state
->n_wronly
&& !test_bit(NFS_O_WRONLY_STATE
, &state
->flags
))
1424 if (state
->n_rdwr
&& !test_bit(NFS_O_RDWR_STATE
, &state
->flags
))
1428 #endif /* CONFIG_NFS_V4_1 */
1430 static void nfs_test_and_clear_all_open_stateid(struct nfs4_state
*state
)
1432 struct nfs_client
*clp
= state
->owner
->so_server
->nfs_client
;
1433 bool need_recover
= false;
1435 if (test_and_clear_bit(NFS_O_RDONLY_STATE
, &state
->flags
) && state
->n_rdonly
)
1436 need_recover
= true;
1437 if (test_and_clear_bit(NFS_O_WRONLY_STATE
, &state
->flags
) && state
->n_wronly
)
1438 need_recover
= true;
1439 if (test_and_clear_bit(NFS_O_RDWR_STATE
, &state
->flags
) && state
->n_rdwr
)
1440 need_recover
= true;
1442 nfs4_state_mark_reclaim_nograce(clp
, state
);
1445 static bool nfs_need_update_open_stateid(struct nfs4_state
*state
,
1446 const nfs4_stateid
*stateid
, nfs4_stateid
*freeme
)
1448 if (test_and_set_bit(NFS_OPEN_STATE
, &state
->flags
) == 0)
1450 if (!nfs4_stateid_match_other(stateid
, &state
->open_stateid
)) {
1451 nfs4_stateid_copy(freeme
, &state
->open_stateid
);
1452 nfs_test_and_clear_all_open_stateid(state
);
1455 if (nfs4_stateid_is_newer(stateid
, &state
->open_stateid
))
1460 static void nfs_resync_open_stateid_locked(struct nfs4_state
*state
)
1462 if (!(state
->n_wronly
|| state
->n_rdonly
|| state
->n_rdwr
))
1464 if (state
->n_wronly
)
1465 set_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
1466 if (state
->n_rdonly
)
1467 set_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
1469 set_bit(NFS_O_RDWR_STATE
, &state
->flags
);
1470 set_bit(NFS_OPEN_STATE
, &state
->flags
);
1473 static void nfs_clear_open_stateid_locked(struct nfs4_state
*state
,
1474 nfs4_stateid
*stateid
, fmode_t fmode
)
1476 clear_bit(NFS_O_RDWR_STATE
, &state
->flags
);
1477 switch (fmode
& (FMODE_READ
|FMODE_WRITE
)) {
1479 clear_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
1482 clear_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
1485 clear_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
1486 clear_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
1487 clear_bit(NFS_OPEN_STATE
, &state
->flags
);
1489 if (stateid
== NULL
)
1491 /* Handle OPEN+OPEN_DOWNGRADE races */
1492 if (nfs4_stateid_match_other(stateid
, &state
->open_stateid
) &&
1493 !nfs4_stateid_is_newer(stateid
, &state
->open_stateid
)) {
1494 nfs_resync_open_stateid_locked(state
);
1497 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) == 0)
1498 nfs4_stateid_copy(&state
->stateid
, stateid
);
1499 nfs4_stateid_copy(&state
->open_stateid
, stateid
);
1502 static void nfs_clear_open_stateid(struct nfs4_state
*state
,
1503 nfs4_stateid
*arg_stateid
,
1504 nfs4_stateid
*stateid
, fmode_t fmode
)
1506 write_seqlock(&state
->seqlock
);
1507 /* Ignore, if the CLOSE argment doesn't match the current stateid */
1508 if (nfs4_state_match_open_stateid_other(state
, arg_stateid
))
1509 nfs_clear_open_stateid_locked(state
, stateid
, fmode
);
1510 write_sequnlock(&state
->seqlock
);
1511 if (test_bit(NFS_STATE_RECLAIM_NOGRACE
, &state
->flags
))
1512 nfs4_schedule_state_manager(state
->owner
->so_server
->nfs_client
);
1515 static void nfs_set_open_stateid_locked(struct nfs4_state
*state
,
1516 const nfs4_stateid
*stateid
, fmode_t fmode
,
1517 nfs4_stateid
*freeme
)
1521 set_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
1524 set_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
1526 case FMODE_READ
|FMODE_WRITE
:
1527 set_bit(NFS_O_RDWR_STATE
, &state
->flags
);
1529 if (!nfs_need_update_open_stateid(state
, stateid
, freeme
))
1531 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) == 0)
1532 nfs4_stateid_copy(&state
->stateid
, stateid
);
1533 nfs4_stateid_copy(&state
->open_stateid
, stateid
);
1536 static void __update_open_stateid(struct nfs4_state
*state
,
1537 const nfs4_stateid
*open_stateid
,
1538 const nfs4_stateid
*deleg_stateid
,
1540 nfs4_stateid
*freeme
)
1543 * Protect the call to nfs4_state_set_mode_locked and
1544 * serialise the stateid update
1546 spin_lock(&state
->owner
->so_lock
);
1547 write_seqlock(&state
->seqlock
);
1548 if (deleg_stateid
!= NULL
) {
1549 nfs4_stateid_copy(&state
->stateid
, deleg_stateid
);
1550 set_bit(NFS_DELEGATED_STATE
, &state
->flags
);
1552 if (open_stateid
!= NULL
)
1553 nfs_set_open_stateid_locked(state
, open_stateid
, fmode
, freeme
);
1554 write_sequnlock(&state
->seqlock
);
1555 update_open_stateflags(state
, fmode
);
1556 spin_unlock(&state
->owner
->so_lock
);
1559 static int update_open_stateid(struct nfs4_state
*state
,
1560 const nfs4_stateid
*open_stateid
,
1561 const nfs4_stateid
*delegation
,
1564 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
1565 struct nfs_client
*clp
= server
->nfs_client
;
1566 struct nfs_inode
*nfsi
= NFS_I(state
->inode
);
1567 struct nfs_delegation
*deleg_cur
;
1568 nfs4_stateid freeme
= { };
1571 fmode
&= (FMODE_READ
|FMODE_WRITE
);
1574 deleg_cur
= rcu_dereference(nfsi
->delegation
);
1575 if (deleg_cur
== NULL
)
1578 spin_lock(&deleg_cur
->lock
);
1579 if (rcu_dereference(nfsi
->delegation
) != deleg_cur
||
1580 test_bit(NFS_DELEGATION_RETURNING
, &deleg_cur
->flags
) ||
1581 (deleg_cur
->type
& fmode
) != fmode
)
1582 goto no_delegation_unlock
;
1584 if (delegation
== NULL
)
1585 delegation
= &deleg_cur
->stateid
;
1586 else if (!nfs4_stateid_match(&deleg_cur
->stateid
, delegation
))
1587 goto no_delegation_unlock
;
1589 nfs_mark_delegation_referenced(deleg_cur
);
1590 __update_open_stateid(state
, open_stateid
, &deleg_cur
->stateid
,
1593 no_delegation_unlock
:
1594 spin_unlock(&deleg_cur
->lock
);
1598 if (!ret
&& open_stateid
!= NULL
) {
1599 __update_open_stateid(state
, open_stateid
, NULL
, fmode
, &freeme
);
1602 if (test_bit(NFS_STATE_RECLAIM_NOGRACE
, &state
->flags
))
1603 nfs4_schedule_state_manager(clp
);
1604 if (freeme
.type
!= 0)
1605 nfs4_test_and_free_stateid(server
, &freeme
,
1606 state
->owner
->so_cred
);
1611 static bool nfs4_update_lock_stateid(struct nfs4_lock_state
*lsp
,
1612 const nfs4_stateid
*stateid
)
1614 struct nfs4_state
*state
= lsp
->ls_state
;
1617 spin_lock(&state
->state_lock
);
1618 if (!nfs4_stateid_match_other(stateid
, &lsp
->ls_stateid
))
1620 if (!nfs4_stateid_is_newer(stateid
, &lsp
->ls_stateid
))
1622 nfs4_stateid_copy(&lsp
->ls_stateid
, stateid
);
1625 spin_unlock(&state
->state_lock
);
1629 static void nfs4_return_incompatible_delegation(struct inode
*inode
, fmode_t fmode
)
1631 struct nfs_delegation
*delegation
;
1634 delegation
= rcu_dereference(NFS_I(inode
)->delegation
);
1635 if (delegation
== NULL
|| (delegation
->type
& fmode
) == fmode
) {
1640 nfs4_inode_return_delegation(inode
);
1643 static struct nfs4_state
*nfs4_try_open_cached(struct nfs4_opendata
*opendata
)
1645 struct nfs4_state
*state
= opendata
->state
;
1646 struct nfs_inode
*nfsi
= NFS_I(state
->inode
);
1647 struct nfs_delegation
*delegation
;
1648 int open_mode
= opendata
->o_arg
.open_flags
;
1649 fmode_t fmode
= opendata
->o_arg
.fmode
;
1650 enum open_claim_type4 claim
= opendata
->o_arg
.claim
;
1651 nfs4_stateid stateid
;
1655 spin_lock(&state
->owner
->so_lock
);
1656 if (can_open_cached(state
, fmode
, open_mode
)) {
1657 update_open_stateflags(state
, fmode
);
1658 spin_unlock(&state
->owner
->so_lock
);
1659 goto out_return_state
;
1661 spin_unlock(&state
->owner
->so_lock
);
1663 delegation
= rcu_dereference(nfsi
->delegation
);
1664 if (!can_open_delegated(delegation
, fmode
, claim
)) {
1668 /* Save the delegation */
1669 nfs4_stateid_copy(&stateid
, &delegation
->stateid
);
1671 nfs_release_seqid(opendata
->o_arg
.seqid
);
1672 if (!opendata
->is_recover
) {
1673 ret
= nfs_may_open(state
->inode
, state
->owner
->so_cred
, open_mode
);
1679 /* Try to update the stateid using the delegation */
1680 if (update_open_stateid(state
, NULL
, &stateid
, fmode
))
1681 goto out_return_state
;
1684 return ERR_PTR(ret
);
1686 atomic_inc(&state
->count
);
1691 nfs4_opendata_check_deleg(struct nfs4_opendata
*data
, struct nfs4_state
*state
)
1693 struct nfs_client
*clp
= NFS_SERVER(state
->inode
)->nfs_client
;
1694 struct nfs_delegation
*delegation
;
1695 int delegation_flags
= 0;
1698 delegation
= rcu_dereference(NFS_I(state
->inode
)->delegation
);
1700 delegation_flags
= delegation
->flags
;
1702 switch (data
->o_arg
.claim
) {
1705 case NFS4_OPEN_CLAIM_DELEGATE_CUR
:
1706 case NFS4_OPEN_CLAIM_DELEG_CUR_FH
:
1707 pr_err_ratelimited("NFS: Broken NFSv4 server %s is "
1708 "returning a delegation for "
1709 "OPEN(CLAIM_DELEGATE_CUR)\n",
1713 if ((delegation_flags
& 1UL<<NFS_DELEGATION_NEED_RECLAIM
) == 0)
1714 nfs_inode_set_delegation(state
->inode
,
1715 data
->owner
->so_cred
,
1718 nfs_inode_reclaim_delegation(state
->inode
,
1719 data
->owner
->so_cred
,
1724 * Check the inode attributes against the CLAIM_PREVIOUS returned attributes
1725 * and update the nfs4_state.
1727 static struct nfs4_state
*
1728 _nfs4_opendata_reclaim_to_nfs4_state(struct nfs4_opendata
*data
)
1730 struct inode
*inode
= data
->state
->inode
;
1731 struct nfs4_state
*state
= data
->state
;
1734 if (!data
->rpc_done
) {
1735 if (data
->rpc_status
) {
1736 ret
= data
->rpc_status
;
1739 /* cached opens have already been processed */
1743 ret
= nfs_refresh_inode(inode
, &data
->f_attr
);
1747 if (data
->o_res
.delegation_type
!= 0)
1748 nfs4_opendata_check_deleg(data
, state
);
1750 update_open_stateid(state
, &data
->o_res
.stateid
, NULL
,
1752 atomic_inc(&state
->count
);
1756 return ERR_PTR(ret
);
1760 static struct nfs4_state
*
1761 _nfs4_opendata_to_nfs4_state(struct nfs4_opendata
*data
)
1763 struct inode
*inode
;
1764 struct nfs4_state
*state
= NULL
;
1767 if (!data
->rpc_done
) {
1768 state
= nfs4_try_open_cached(data
);
1769 trace_nfs4_cached_open(data
->state
);
1774 if (!(data
->f_attr
.valid
& NFS_ATTR_FATTR
))
1776 inode
= nfs_fhget(data
->dir
->d_sb
, &data
->o_res
.fh
, &data
->f_attr
, data
->f_label
);
1777 ret
= PTR_ERR(inode
);
1781 state
= nfs4_get_open_state(inode
, data
->owner
);
1784 if (data
->o_res
.delegation_type
!= 0)
1785 nfs4_opendata_check_deleg(data
, state
);
1786 update_open_stateid(state
, &data
->o_res
.stateid
, NULL
,
1790 nfs_release_seqid(data
->o_arg
.seqid
);
1795 return ERR_PTR(ret
);
1798 static struct nfs4_state
*
1799 nfs4_opendata_to_nfs4_state(struct nfs4_opendata
*data
)
1801 struct nfs4_state
*ret
;
1803 if (data
->o_arg
.claim
== NFS4_OPEN_CLAIM_PREVIOUS
)
1804 ret
=_nfs4_opendata_reclaim_to_nfs4_state(data
);
1806 ret
= _nfs4_opendata_to_nfs4_state(data
);
1807 nfs4_sequence_free_slot(&data
->o_res
.seq_res
);
1811 static struct nfs_open_context
*nfs4_state_find_open_context(struct nfs4_state
*state
)
1813 struct nfs_inode
*nfsi
= NFS_I(state
->inode
);
1814 struct nfs_open_context
*ctx
;
1816 spin_lock(&state
->inode
->i_lock
);
1817 list_for_each_entry(ctx
, &nfsi
->open_files
, list
) {
1818 if (ctx
->state
!= state
)
1820 get_nfs_open_context(ctx
);
1821 spin_unlock(&state
->inode
->i_lock
);
1824 spin_unlock(&state
->inode
->i_lock
);
1825 return ERR_PTR(-ENOENT
);
1828 static struct nfs4_opendata
*nfs4_open_recoverdata_alloc(struct nfs_open_context
*ctx
,
1829 struct nfs4_state
*state
, enum open_claim_type4 claim
)
1831 struct nfs4_opendata
*opendata
;
1833 opendata
= nfs4_opendata_alloc(ctx
->dentry
, state
->owner
, 0, 0,
1834 NULL
, NULL
, claim
, GFP_NOFS
);
1835 if (opendata
== NULL
)
1836 return ERR_PTR(-ENOMEM
);
1837 opendata
->state
= state
;
1838 atomic_inc(&state
->count
);
1842 static int nfs4_open_recover_helper(struct nfs4_opendata
*opendata
,
1845 struct nfs4_state
*newstate
;
1848 if (!nfs4_mode_match_open_stateid(opendata
->state
, fmode
))
1850 opendata
->o_arg
.open_flags
= 0;
1851 opendata
->o_arg
.fmode
= fmode
;
1852 opendata
->o_arg
.share_access
= nfs4_map_atomic_open_share(
1853 NFS_SB(opendata
->dentry
->d_sb
),
1855 memset(&opendata
->o_res
, 0, sizeof(opendata
->o_res
));
1856 memset(&opendata
->c_res
, 0, sizeof(opendata
->c_res
));
1857 nfs4_init_opendata_res(opendata
);
1858 ret
= _nfs4_recover_proc_open(opendata
);
1861 newstate
= nfs4_opendata_to_nfs4_state(opendata
);
1862 if (IS_ERR(newstate
))
1863 return PTR_ERR(newstate
);
1864 if (newstate
!= opendata
->state
)
1866 nfs4_close_state(newstate
, fmode
);
1870 static int nfs4_open_recover(struct nfs4_opendata
*opendata
, struct nfs4_state
*state
)
1874 /* Don't trigger recovery in nfs_test_and_clear_all_open_stateid */
1875 clear_bit(NFS_O_RDWR_STATE
, &state
->flags
);
1876 clear_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
1877 clear_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
1878 /* memory barrier prior to reading state->n_* */
1879 clear_bit(NFS_DELEGATED_STATE
, &state
->flags
);
1880 clear_bit(NFS_OPEN_STATE
, &state
->flags
);
1882 ret
= nfs4_open_recover_helper(opendata
, FMODE_READ
|FMODE_WRITE
);
1885 ret
= nfs4_open_recover_helper(opendata
, FMODE_WRITE
);
1888 ret
= nfs4_open_recover_helper(opendata
, FMODE_READ
);
1892 * We may have performed cached opens for all three recoveries.
1893 * Check if we need to update the current stateid.
1895 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) == 0 &&
1896 !nfs4_stateid_match(&state
->stateid
, &state
->open_stateid
)) {
1897 write_seqlock(&state
->seqlock
);
1898 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) == 0)
1899 nfs4_stateid_copy(&state
->stateid
, &state
->open_stateid
);
1900 write_sequnlock(&state
->seqlock
);
1907 * reclaim state on the server after a reboot.
1909 static int _nfs4_do_open_reclaim(struct nfs_open_context
*ctx
, struct nfs4_state
*state
)
1911 struct nfs_delegation
*delegation
;
1912 struct nfs4_opendata
*opendata
;
1913 fmode_t delegation_type
= 0;
1916 opendata
= nfs4_open_recoverdata_alloc(ctx
, state
,
1917 NFS4_OPEN_CLAIM_PREVIOUS
);
1918 if (IS_ERR(opendata
))
1919 return PTR_ERR(opendata
);
1921 delegation
= rcu_dereference(NFS_I(state
->inode
)->delegation
);
1922 if (delegation
!= NULL
&& test_bit(NFS_DELEGATION_NEED_RECLAIM
, &delegation
->flags
) != 0)
1923 delegation_type
= delegation
->type
;
1925 opendata
->o_arg
.u
.delegation_type
= delegation_type
;
1926 status
= nfs4_open_recover(opendata
, state
);
1927 nfs4_opendata_put(opendata
);
1931 static int nfs4_do_open_reclaim(struct nfs_open_context
*ctx
, struct nfs4_state
*state
)
1933 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
1934 struct nfs4_exception exception
= { };
1937 err
= _nfs4_do_open_reclaim(ctx
, state
);
1938 trace_nfs4_open_reclaim(ctx
, 0, err
);
1939 if (nfs4_clear_cap_atomic_open_v1(server
, err
, &exception
))
1941 if (err
!= -NFS4ERR_DELAY
)
1943 nfs4_handle_exception(server
, err
, &exception
);
1944 } while (exception
.retry
);
1948 static int nfs4_open_reclaim(struct nfs4_state_owner
*sp
, struct nfs4_state
*state
)
1950 struct nfs_open_context
*ctx
;
1953 ctx
= nfs4_state_find_open_context(state
);
1956 ret
= nfs4_do_open_reclaim(ctx
, state
);
1957 put_nfs_open_context(ctx
);
1961 static int nfs4_handle_delegation_recall_error(struct nfs_server
*server
, struct nfs4_state
*state
, const nfs4_stateid
*stateid
, int err
)
1965 printk(KERN_ERR
"NFS: %s: unhandled error "
1966 "%d.\n", __func__
, err
);
1972 case -NFS4ERR_BADSESSION
:
1973 case -NFS4ERR_BADSLOT
:
1974 case -NFS4ERR_BAD_HIGH_SLOT
:
1975 case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION
:
1976 case -NFS4ERR_DEADSESSION
:
1977 set_bit(NFS_DELEGATED_STATE
, &state
->flags
);
1978 nfs4_schedule_session_recovery(server
->nfs_client
->cl_session
, err
);
1980 case -NFS4ERR_STALE_CLIENTID
:
1981 case -NFS4ERR_STALE_STATEID
:
1982 set_bit(NFS_DELEGATED_STATE
, &state
->flags
);
1983 /* Don't recall a delegation if it was lost */
1984 nfs4_schedule_lease_recovery(server
->nfs_client
);
1986 case -NFS4ERR_MOVED
:
1987 nfs4_schedule_migration_recovery(server
);
1989 case -NFS4ERR_LEASE_MOVED
:
1990 nfs4_schedule_lease_moved_recovery(server
->nfs_client
);
1992 case -NFS4ERR_DELEG_REVOKED
:
1993 case -NFS4ERR_ADMIN_REVOKED
:
1994 case -NFS4ERR_EXPIRED
:
1995 case -NFS4ERR_BAD_STATEID
:
1996 case -NFS4ERR_OPENMODE
:
1997 nfs_inode_find_state_and_recover(state
->inode
,
1999 nfs4_schedule_stateid_recovery(server
, state
);
2001 case -NFS4ERR_DELAY
:
2002 case -NFS4ERR_GRACE
:
2003 set_bit(NFS_DELEGATED_STATE
, &state
->flags
);
2007 case -NFS4ERR_DENIED
:
2008 /* kill_proc(fl->fl_pid, SIGLOST, 1); */
2014 int nfs4_open_delegation_recall(struct nfs_open_context
*ctx
,
2015 struct nfs4_state
*state
, const nfs4_stateid
*stateid
,
2018 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
2019 struct nfs4_opendata
*opendata
;
2022 opendata
= nfs4_open_recoverdata_alloc(ctx
, state
,
2023 NFS4_OPEN_CLAIM_DELEG_CUR_FH
);
2024 if (IS_ERR(opendata
))
2025 return PTR_ERR(opendata
);
2026 nfs4_stateid_copy(&opendata
->o_arg
.u
.delegation
, stateid
);
2027 write_seqlock(&state
->seqlock
);
2028 nfs4_stateid_copy(&state
->stateid
, &state
->open_stateid
);
2029 write_sequnlock(&state
->seqlock
);
2030 clear_bit(NFS_DELEGATED_STATE
, &state
->flags
);
2031 switch (type
& (FMODE_READ
|FMODE_WRITE
)) {
2032 case FMODE_READ
|FMODE_WRITE
:
2034 err
= nfs4_open_recover_helper(opendata
, FMODE_READ
|FMODE_WRITE
);
2037 err
= nfs4_open_recover_helper(opendata
, FMODE_WRITE
);
2041 err
= nfs4_open_recover_helper(opendata
, FMODE_READ
);
2043 nfs4_opendata_put(opendata
);
2044 return nfs4_handle_delegation_recall_error(server
, state
, stateid
, err
);
2047 static void nfs4_open_confirm_prepare(struct rpc_task
*task
, void *calldata
)
2049 struct nfs4_opendata
*data
= calldata
;
2051 nfs40_setup_sequence(data
->o_arg
.server
->nfs_client
->cl_slot_tbl
,
2052 &data
->c_arg
.seq_args
, &data
->c_res
.seq_res
, task
);
2055 static void nfs4_open_confirm_done(struct rpc_task
*task
, void *calldata
)
2057 struct nfs4_opendata
*data
= calldata
;
2059 nfs40_sequence_done(task
, &data
->c_res
.seq_res
);
2061 data
->rpc_status
= task
->tk_status
;
2062 if (data
->rpc_status
== 0) {
2063 nfs4_stateid_copy(&data
->o_res
.stateid
, &data
->c_res
.stateid
);
2064 nfs_confirm_seqid(&data
->owner
->so_seqid
, 0);
2065 renew_lease(data
->o_res
.server
, data
->timestamp
);
2070 static void nfs4_open_confirm_release(void *calldata
)
2072 struct nfs4_opendata
*data
= calldata
;
2073 struct nfs4_state
*state
= NULL
;
2075 /* If this request hasn't been cancelled, do nothing */
2076 if (data
->cancelled
== 0)
2078 /* In case of error, no cleanup! */
2079 if (!data
->rpc_done
)
2081 state
= nfs4_opendata_to_nfs4_state(data
);
2083 nfs4_close_state(state
, data
->o_arg
.fmode
);
2085 nfs4_opendata_put(data
);
2088 static const struct rpc_call_ops nfs4_open_confirm_ops
= {
2089 .rpc_call_prepare
= nfs4_open_confirm_prepare
,
2090 .rpc_call_done
= nfs4_open_confirm_done
,
2091 .rpc_release
= nfs4_open_confirm_release
,
2095 * Note: On error, nfs4_proc_open_confirm will free the struct nfs4_opendata
2097 static int _nfs4_proc_open_confirm(struct nfs4_opendata
*data
)
2099 struct nfs_server
*server
= NFS_SERVER(d_inode(data
->dir
));
2100 struct rpc_task
*task
;
2101 struct rpc_message msg
= {
2102 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_OPEN_CONFIRM
],
2103 .rpc_argp
= &data
->c_arg
,
2104 .rpc_resp
= &data
->c_res
,
2105 .rpc_cred
= data
->owner
->so_cred
,
2107 struct rpc_task_setup task_setup_data
= {
2108 .rpc_client
= server
->client
,
2109 .rpc_message
= &msg
,
2110 .callback_ops
= &nfs4_open_confirm_ops
,
2111 .callback_data
= data
,
2112 .workqueue
= nfsiod_workqueue
,
2113 .flags
= RPC_TASK_ASYNC
,
2117 nfs4_init_sequence(&data
->c_arg
.seq_args
, &data
->c_res
.seq_res
, 1);
2118 kref_get(&data
->kref
);
2120 data
->rpc_status
= 0;
2121 data
->timestamp
= jiffies
;
2122 if (data
->is_recover
)
2123 nfs4_set_sequence_privileged(&data
->c_arg
.seq_args
);
2124 task
= rpc_run_task(&task_setup_data
);
2126 return PTR_ERR(task
);
2127 status
= nfs4_wait_for_completion_rpc_task(task
);
2129 data
->cancelled
= 1;
2132 status
= data
->rpc_status
;
2137 static void nfs4_open_prepare(struct rpc_task
*task
, void *calldata
)
2139 struct nfs4_opendata
*data
= calldata
;
2140 struct nfs4_state_owner
*sp
= data
->owner
;
2141 struct nfs_client
*clp
= sp
->so_server
->nfs_client
;
2142 enum open_claim_type4 claim
= data
->o_arg
.claim
;
2144 if (nfs_wait_on_sequence(data
->o_arg
.seqid
, task
) != 0)
2147 * Check if we still need to send an OPEN call, or if we can use
2148 * a delegation instead.
2150 if (data
->state
!= NULL
) {
2151 struct nfs_delegation
*delegation
;
2153 if (can_open_cached(data
->state
, data
->o_arg
.fmode
, data
->o_arg
.open_flags
))
2156 delegation
= rcu_dereference(NFS_I(data
->state
->inode
)->delegation
);
2157 if (can_open_delegated(delegation
, data
->o_arg
.fmode
, claim
))
2158 goto unlock_no_action
;
2161 /* Update client id. */
2162 data
->o_arg
.clientid
= clp
->cl_clientid
;
2166 case NFS4_OPEN_CLAIM_PREVIOUS
:
2167 case NFS4_OPEN_CLAIM_DELEG_CUR_FH
:
2168 case NFS4_OPEN_CLAIM_DELEG_PREV_FH
:
2169 data
->o_arg
.open_bitmap
= &nfs4_open_noattr_bitmap
[0];
2170 case NFS4_OPEN_CLAIM_FH
:
2171 task
->tk_msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_OPEN_NOATTR
];
2172 nfs_copy_fh(&data
->o_res
.fh
, data
->o_arg
.fh
);
2174 data
->timestamp
= jiffies
;
2175 if (nfs4_setup_sequence(data
->o_arg
.server
,
2176 &data
->o_arg
.seq_args
,
2177 &data
->o_res
.seq_res
,
2179 nfs_release_seqid(data
->o_arg
.seqid
);
2181 /* Set the create mode (note dependency on the session type) */
2182 data
->o_arg
.createmode
= NFS4_CREATE_UNCHECKED
;
2183 if (data
->o_arg
.open_flags
& O_EXCL
) {
2184 data
->o_arg
.createmode
= NFS4_CREATE_EXCLUSIVE
;
2185 if (nfs4_has_persistent_session(clp
))
2186 data
->o_arg
.createmode
= NFS4_CREATE_GUARDED
;
2187 else if (clp
->cl_mvops
->minor_version
> 0)
2188 data
->o_arg
.createmode
= NFS4_CREATE_EXCLUSIVE4_1
;
2192 trace_nfs4_cached_open(data
->state
);
2195 task
->tk_action
= NULL
;
2197 nfs4_sequence_done(task
, &data
->o_res
.seq_res
);
2200 static void nfs4_open_done(struct rpc_task
*task
, void *calldata
)
2202 struct nfs4_opendata
*data
= calldata
;
2204 data
->rpc_status
= task
->tk_status
;
2206 if (!nfs4_sequence_process(task
, &data
->o_res
.seq_res
))
2209 if (task
->tk_status
== 0) {
2210 if (data
->o_res
.f_attr
->valid
& NFS_ATTR_FATTR_TYPE
) {
2211 switch (data
->o_res
.f_attr
->mode
& S_IFMT
) {
2215 data
->rpc_status
= -ELOOP
;
2218 data
->rpc_status
= -EISDIR
;
2221 data
->rpc_status
= -ENOTDIR
;
2224 renew_lease(data
->o_res
.server
, data
->timestamp
);
2225 if (!(data
->o_res
.rflags
& NFS4_OPEN_RESULT_CONFIRM
))
2226 nfs_confirm_seqid(&data
->owner
->so_seqid
, 0);
2231 static void nfs4_open_release(void *calldata
)
2233 struct nfs4_opendata
*data
= calldata
;
2234 struct nfs4_state
*state
= NULL
;
2236 /* If this request hasn't been cancelled, do nothing */
2237 if (data
->cancelled
== 0)
2239 /* In case of error, no cleanup! */
2240 if (data
->rpc_status
!= 0 || !data
->rpc_done
)
2242 /* In case we need an open_confirm, no cleanup! */
2243 if (data
->o_res
.rflags
& NFS4_OPEN_RESULT_CONFIRM
)
2245 state
= nfs4_opendata_to_nfs4_state(data
);
2247 nfs4_close_state(state
, data
->o_arg
.fmode
);
2249 nfs4_opendata_put(data
);
2252 static const struct rpc_call_ops nfs4_open_ops
= {
2253 .rpc_call_prepare
= nfs4_open_prepare
,
2254 .rpc_call_done
= nfs4_open_done
,
2255 .rpc_release
= nfs4_open_release
,
2258 static int nfs4_run_open_task(struct nfs4_opendata
*data
, int isrecover
)
2260 struct inode
*dir
= d_inode(data
->dir
);
2261 struct nfs_server
*server
= NFS_SERVER(dir
);
2262 struct nfs_openargs
*o_arg
= &data
->o_arg
;
2263 struct nfs_openres
*o_res
= &data
->o_res
;
2264 struct rpc_task
*task
;
2265 struct rpc_message msg
= {
2266 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_OPEN
],
2269 .rpc_cred
= data
->owner
->so_cred
,
2271 struct rpc_task_setup task_setup_data
= {
2272 .rpc_client
= server
->client
,
2273 .rpc_message
= &msg
,
2274 .callback_ops
= &nfs4_open_ops
,
2275 .callback_data
= data
,
2276 .workqueue
= nfsiod_workqueue
,
2277 .flags
= RPC_TASK_ASYNC
,
2281 nfs4_init_sequence(&o_arg
->seq_args
, &o_res
->seq_res
, 1);
2282 kref_get(&data
->kref
);
2284 data
->rpc_status
= 0;
2285 data
->cancelled
= 0;
2286 data
->is_recover
= 0;
2288 nfs4_set_sequence_privileged(&o_arg
->seq_args
);
2289 data
->is_recover
= 1;
2291 task
= rpc_run_task(&task_setup_data
);
2293 return PTR_ERR(task
);
2294 status
= nfs4_wait_for_completion_rpc_task(task
);
2296 data
->cancelled
= 1;
2299 status
= data
->rpc_status
;
2305 static int _nfs4_recover_proc_open(struct nfs4_opendata
*data
)
2307 struct inode
*dir
= d_inode(data
->dir
);
2308 struct nfs_openres
*o_res
= &data
->o_res
;
2311 status
= nfs4_run_open_task(data
, 1);
2312 if (status
!= 0 || !data
->rpc_done
)
2315 nfs_fattr_map_and_free_names(NFS_SERVER(dir
), &data
->f_attr
);
2317 if (o_res
->rflags
& NFS4_OPEN_RESULT_CONFIRM
) {
2318 status
= _nfs4_proc_open_confirm(data
);
2327 * Additional permission checks in order to distinguish between an
2328 * open for read, and an open for execute. This works around the
2329 * fact that NFSv4 OPEN treats read and execute permissions as being
2331 * Note that in the non-execute case, we want to turn off permission
2332 * checking if we just created a new file (POSIX open() semantics).
2334 static int nfs4_opendata_access(struct rpc_cred
*cred
,
2335 struct nfs4_opendata
*opendata
,
2336 struct nfs4_state
*state
, fmode_t fmode
,
2339 struct nfs_access_entry cache
;
2342 /* access call failed or for some reason the server doesn't
2343 * support any access modes -- defer access call until later */
2344 if (opendata
->o_res
.access_supported
== 0)
2349 * Use openflags to check for exec, because fmode won't
2350 * always have FMODE_EXEC set when file open for exec.
2352 if (openflags
& __FMODE_EXEC
) {
2353 /* ONLY check for exec rights */
2355 } else if ((fmode
& FMODE_READ
) && !opendata
->file_created
)
2359 cache
.jiffies
= jiffies
;
2360 nfs_access_set_mask(&cache
, opendata
->o_res
.access_result
);
2361 nfs_access_add_cache(state
->inode
, &cache
);
2363 if ((mask
& ~cache
.mask
& (MAY_READ
| MAY_EXEC
)) == 0)
2366 /* even though OPEN succeeded, access is denied. Close the file */
2367 nfs4_close_state(state
, fmode
);
2372 * Note: On error, nfs4_proc_open will free the struct nfs4_opendata
2374 static int _nfs4_proc_open(struct nfs4_opendata
*data
)
2376 struct inode
*dir
= d_inode(data
->dir
);
2377 struct nfs_server
*server
= NFS_SERVER(dir
);
2378 struct nfs_openargs
*o_arg
= &data
->o_arg
;
2379 struct nfs_openres
*o_res
= &data
->o_res
;
2382 status
= nfs4_run_open_task(data
, 0);
2383 if (!data
->rpc_done
)
2386 if (status
== -NFS4ERR_BADNAME
&&
2387 !(o_arg
->open_flags
& O_CREAT
))
2392 nfs_fattr_map_and_free_names(server
, &data
->f_attr
);
2394 if (o_arg
->open_flags
& O_CREAT
) {
2395 if (o_arg
->open_flags
& O_EXCL
)
2396 data
->file_created
= 1;
2397 else if (o_res
->cinfo
.before
!= o_res
->cinfo
.after
)
2398 data
->file_created
= 1;
2399 if (data
->file_created
|| dir
->i_version
!= o_res
->cinfo
.after
)
2400 update_changeattr(dir
, &o_res
->cinfo
,
2401 o_res
->f_attr
->time_start
);
2403 if ((o_res
->rflags
& NFS4_OPEN_RESULT_LOCKTYPE_POSIX
) == 0)
2404 server
->caps
&= ~NFS_CAP_POSIX_LOCK
;
2405 if(o_res
->rflags
& NFS4_OPEN_RESULT_CONFIRM
) {
2406 status
= _nfs4_proc_open_confirm(data
);
2410 if (!(o_res
->f_attr
->valid
& NFS_ATTR_FATTR
))
2411 nfs4_proc_getattr(server
, &o_res
->fh
, o_res
->f_attr
, o_res
->f_label
);
2415 static int nfs4_recover_expired_lease(struct nfs_server
*server
)
2417 return nfs4_client_recover_expired_lease(server
->nfs_client
);
2422 * reclaim state on the server after a network partition.
2423 * Assumes caller holds the appropriate lock
2425 static int _nfs4_open_expired(struct nfs_open_context
*ctx
, struct nfs4_state
*state
)
2427 struct nfs4_opendata
*opendata
;
2430 opendata
= nfs4_open_recoverdata_alloc(ctx
, state
,
2431 NFS4_OPEN_CLAIM_FH
);
2432 if (IS_ERR(opendata
))
2433 return PTR_ERR(opendata
);
2434 ret
= nfs4_open_recover(opendata
, state
);
2436 d_drop(ctx
->dentry
);
2437 nfs4_opendata_put(opendata
);
2441 static int nfs4_do_open_expired(struct nfs_open_context
*ctx
, struct nfs4_state
*state
)
2443 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
2444 struct nfs4_exception exception
= { };
2448 err
= _nfs4_open_expired(ctx
, state
);
2449 trace_nfs4_open_expired(ctx
, 0, err
);
2450 if (nfs4_clear_cap_atomic_open_v1(server
, err
, &exception
))
2455 case -NFS4ERR_GRACE
:
2456 case -NFS4ERR_DELAY
:
2457 nfs4_handle_exception(server
, err
, &exception
);
2460 } while (exception
.retry
);
2465 static int nfs4_open_expired(struct nfs4_state_owner
*sp
, struct nfs4_state
*state
)
2467 struct nfs_open_context
*ctx
;
2470 ctx
= nfs4_state_find_open_context(state
);
2473 ret
= nfs4_do_open_expired(ctx
, state
);
2474 put_nfs_open_context(ctx
);
2478 static void nfs_finish_clear_delegation_stateid(struct nfs4_state
*state
,
2479 const nfs4_stateid
*stateid
)
2481 nfs_remove_bad_delegation(state
->inode
, stateid
);
2482 write_seqlock(&state
->seqlock
);
2483 nfs4_stateid_copy(&state
->stateid
, &state
->open_stateid
);
2484 write_sequnlock(&state
->seqlock
);
2485 clear_bit(NFS_DELEGATED_STATE
, &state
->flags
);
2488 static void nfs40_clear_delegation_stateid(struct nfs4_state
*state
)
2490 if (rcu_access_pointer(NFS_I(state
->inode
)->delegation
) != NULL
)
2491 nfs_finish_clear_delegation_stateid(state
, NULL
);
2494 static int nfs40_open_expired(struct nfs4_state_owner
*sp
, struct nfs4_state
*state
)
2496 /* NFSv4.0 doesn't allow for delegation recovery on open expire */
2497 nfs40_clear_delegation_stateid(state
);
2498 return nfs4_open_expired(sp
, state
);
2501 static int nfs40_test_and_free_expired_stateid(struct nfs_server
*server
,
2502 nfs4_stateid
*stateid
,
2503 struct rpc_cred
*cred
)
2505 return -NFS4ERR_BAD_STATEID
;
2508 #if defined(CONFIG_NFS_V4_1)
2509 static int nfs41_test_and_free_expired_stateid(struct nfs_server
*server
,
2510 nfs4_stateid
*stateid
,
2511 struct rpc_cred
*cred
)
2515 switch (stateid
->type
) {
2518 case NFS4_INVALID_STATEID_TYPE
:
2519 case NFS4_SPECIAL_STATEID_TYPE
:
2520 return -NFS4ERR_BAD_STATEID
;
2521 case NFS4_REVOKED_STATEID_TYPE
:
2525 status
= nfs41_test_stateid(server
, stateid
, cred
);
2527 case -NFS4ERR_EXPIRED
:
2528 case -NFS4ERR_ADMIN_REVOKED
:
2529 case -NFS4ERR_DELEG_REVOKED
:
2535 /* Ack the revoked state to the server */
2536 nfs41_free_stateid(server
, stateid
, cred
, true);
2537 return -NFS4ERR_EXPIRED
;
2540 static void nfs41_check_delegation_stateid(struct nfs4_state
*state
)
2542 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
2543 nfs4_stateid stateid
;
2544 struct nfs_delegation
*delegation
;
2545 struct rpc_cred
*cred
;
2548 /* Get the delegation credential for use by test/free_stateid */
2550 delegation
= rcu_dereference(NFS_I(state
->inode
)->delegation
);
2551 if (delegation
== NULL
) {
2556 nfs4_stateid_copy(&stateid
, &delegation
->stateid
);
2557 if (test_bit(NFS_DELEGATION_REVOKED
, &delegation
->flags
)) {
2559 nfs_finish_clear_delegation_stateid(state
, &stateid
);
2563 if (!test_and_clear_bit(NFS_DELEGATION_TEST_EXPIRED
, &delegation
->flags
)) {
2568 cred
= get_rpccred(delegation
->cred
);
2570 status
= nfs41_test_and_free_expired_stateid(server
, &stateid
, cred
);
2571 trace_nfs4_test_delegation_stateid(state
, NULL
, status
);
2572 if (status
== -NFS4ERR_EXPIRED
|| status
== -NFS4ERR_BAD_STATEID
)
2573 nfs_finish_clear_delegation_stateid(state
, &stateid
);
2579 * nfs41_check_expired_locks - possibly free a lock stateid
2581 * @state: NFSv4 state for an inode
2583 * Returns NFS_OK if recovery for this stateid is now finished.
2584 * Otherwise a negative NFS4ERR value is returned.
2586 static int nfs41_check_expired_locks(struct nfs4_state
*state
)
2588 int status
, ret
= NFS_OK
;
2589 struct nfs4_lock_state
*lsp
, *prev
= NULL
;
2590 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
2592 if (!test_bit(LK_STATE_IN_USE
, &state
->flags
))
2595 spin_lock(&state
->state_lock
);
2596 list_for_each_entry(lsp
, &state
->lock_states
, ls_locks
) {
2597 if (test_bit(NFS_LOCK_INITIALIZED
, &lsp
->ls_flags
)) {
2598 struct rpc_cred
*cred
= lsp
->ls_state
->owner
->so_cred
;
2600 atomic_inc(&lsp
->ls_count
);
2601 spin_unlock(&state
->state_lock
);
2603 nfs4_put_lock_state(prev
);
2606 status
= nfs41_test_and_free_expired_stateid(server
,
2609 trace_nfs4_test_lock_stateid(state
, lsp
, status
);
2610 if (status
== -NFS4ERR_EXPIRED
||
2611 status
== -NFS4ERR_BAD_STATEID
) {
2612 clear_bit(NFS_LOCK_INITIALIZED
, &lsp
->ls_flags
);
2613 lsp
->ls_stateid
.type
= NFS4_INVALID_STATEID_TYPE
;
2614 if (!recover_lost_locks
)
2615 set_bit(NFS_LOCK_LOST
, &lsp
->ls_flags
);
2616 } else if (status
!= NFS_OK
) {
2618 nfs4_put_lock_state(prev
);
2621 spin_lock(&state
->state_lock
);
2624 spin_unlock(&state
->state_lock
);
2625 nfs4_put_lock_state(prev
);
2631 * nfs41_check_open_stateid - possibly free an open stateid
2633 * @state: NFSv4 state for an inode
2635 * Returns NFS_OK if recovery for this stateid is now finished.
2636 * Otherwise a negative NFS4ERR value is returned.
2638 static int nfs41_check_open_stateid(struct nfs4_state
*state
)
2640 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
2641 nfs4_stateid
*stateid
= &state
->open_stateid
;
2642 struct rpc_cred
*cred
= state
->owner
->so_cred
;
2645 if (test_bit(NFS_OPEN_STATE
, &state
->flags
) == 0) {
2646 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) == 0) {
2647 if (nfs4_have_delegation(state
->inode
, state
->state
))
2649 return -NFS4ERR_OPENMODE
;
2651 return -NFS4ERR_BAD_STATEID
;
2653 status
= nfs41_test_and_free_expired_stateid(server
, stateid
, cred
);
2654 trace_nfs4_test_open_stateid(state
, NULL
, status
);
2655 if (status
== -NFS4ERR_EXPIRED
|| status
== -NFS4ERR_BAD_STATEID
) {
2656 clear_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
2657 clear_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
2658 clear_bit(NFS_O_RDWR_STATE
, &state
->flags
);
2659 clear_bit(NFS_OPEN_STATE
, &state
->flags
);
2660 stateid
->type
= NFS4_INVALID_STATEID_TYPE
;
2662 if (status
!= NFS_OK
)
2664 if (nfs_open_stateid_recover_openmode(state
))
2665 return -NFS4ERR_OPENMODE
;
2669 static int nfs41_open_expired(struct nfs4_state_owner
*sp
, struct nfs4_state
*state
)
2673 nfs41_check_delegation_stateid(state
);
2674 status
= nfs41_check_expired_locks(state
);
2675 if (status
!= NFS_OK
)
2677 status
= nfs41_check_open_stateid(state
);
2678 if (status
!= NFS_OK
)
2679 status
= nfs4_open_expired(sp
, state
);
2685 * on an EXCLUSIVE create, the server should send back a bitmask with FATTR4-*
2686 * fields corresponding to attributes that were used to store the verifier.
2687 * Make sure we clobber those fields in the later setattr call
2689 static inline void nfs4_exclusive_attrset(struct nfs4_opendata
*opendata
,
2690 struct iattr
*sattr
, struct nfs4_label
**label
)
2692 const u32
*attrset
= opendata
->o_res
.attrset
;
2694 if ((attrset
[1] & FATTR4_WORD1_TIME_ACCESS
) &&
2695 !(sattr
->ia_valid
& ATTR_ATIME_SET
))
2696 sattr
->ia_valid
|= ATTR_ATIME
;
2698 if ((attrset
[1] & FATTR4_WORD1_TIME_MODIFY
) &&
2699 !(sattr
->ia_valid
& ATTR_MTIME_SET
))
2700 sattr
->ia_valid
|= ATTR_MTIME
;
2702 /* Except MODE, it seems harmless of setting twice. */
2703 if ((attrset
[1] & FATTR4_WORD1_MODE
))
2704 sattr
->ia_valid
&= ~ATTR_MODE
;
2706 if (attrset
[2] & FATTR4_WORD2_SECURITY_LABEL
)
2710 static int _nfs4_open_and_get_state(struct nfs4_opendata
*opendata
,
2713 struct nfs_open_context
*ctx
)
2715 struct nfs4_state_owner
*sp
= opendata
->owner
;
2716 struct nfs_server
*server
= sp
->so_server
;
2717 struct dentry
*dentry
;
2718 struct nfs4_state
*state
;
2722 seq
= raw_seqcount_begin(&sp
->so_reclaim_seqcount
);
2724 ret
= _nfs4_proc_open(opendata
);
2728 state
= nfs4_opendata_to_nfs4_state(opendata
);
2729 ret
= PTR_ERR(state
);
2732 if (server
->caps
& NFS_CAP_POSIX_LOCK
)
2733 set_bit(NFS_STATE_POSIX_LOCKS
, &state
->flags
);
2734 if (opendata
->o_res
.rflags
& NFS4_OPEN_RESULT_MAY_NOTIFY_LOCK
)
2735 set_bit(NFS_STATE_MAY_NOTIFY_LOCK
, &state
->flags
);
2737 dentry
= opendata
->dentry
;
2738 if (d_really_is_negative(dentry
)) {
2739 struct dentry
*alias
;
2741 alias
= d_exact_alias(dentry
, state
->inode
);
2743 alias
= d_splice_alias(igrab(state
->inode
), dentry
);
2744 /* d_splice_alias() can't fail here - it's a non-directory */
2747 ctx
->dentry
= dentry
= alias
;
2749 nfs_set_verifier(dentry
,
2750 nfs_save_change_attribute(d_inode(opendata
->dir
)));
2753 ret
= nfs4_opendata_access(sp
->so_cred
, opendata
, state
, fmode
, flags
);
2758 if (d_inode(dentry
) == state
->inode
) {
2759 nfs_inode_attach_open_context(ctx
);
2760 if (read_seqcount_retry(&sp
->so_reclaim_seqcount
, seq
))
2761 nfs4_schedule_stateid_recovery(server
, state
);
2768 * Returns a referenced nfs4_state
2770 static int _nfs4_do_open(struct inode
*dir
,
2771 struct nfs_open_context
*ctx
,
2773 struct iattr
*sattr
,
2774 struct nfs4_label
*label
,
2777 struct nfs4_state_owner
*sp
;
2778 struct nfs4_state
*state
= NULL
;
2779 struct nfs_server
*server
= NFS_SERVER(dir
);
2780 struct nfs4_opendata
*opendata
;
2781 struct dentry
*dentry
= ctx
->dentry
;
2782 struct rpc_cred
*cred
= ctx
->cred
;
2783 struct nfs4_threshold
**ctx_th
= &ctx
->mdsthreshold
;
2784 fmode_t fmode
= ctx
->mode
& (FMODE_READ
|FMODE_WRITE
|FMODE_EXEC
);
2785 enum open_claim_type4 claim
= NFS4_OPEN_CLAIM_NULL
;
2786 struct nfs4_label
*olabel
= NULL
;
2789 /* Protect against reboot recovery conflicts */
2791 sp
= nfs4_get_state_owner(server
, cred
, GFP_KERNEL
);
2793 dprintk("nfs4_do_open: nfs4_get_state_owner failed!\n");
2796 status
= nfs4_recover_expired_lease(server
);
2798 goto err_put_state_owner
;
2799 if (d_really_is_positive(dentry
))
2800 nfs4_return_incompatible_delegation(d_inode(dentry
), fmode
);
2802 if (d_really_is_positive(dentry
))
2803 claim
= NFS4_OPEN_CLAIM_FH
;
2804 opendata
= nfs4_opendata_alloc(dentry
, sp
, fmode
, flags
, sattr
,
2805 label
, claim
, GFP_KERNEL
);
2806 if (opendata
== NULL
)
2807 goto err_put_state_owner
;
2810 olabel
= nfs4_label_alloc(server
, GFP_KERNEL
);
2811 if (IS_ERR(olabel
)) {
2812 status
= PTR_ERR(olabel
);
2813 goto err_opendata_put
;
2817 if (server
->attr_bitmask
[2] & FATTR4_WORD2_MDSTHRESHOLD
) {
2818 if (!opendata
->f_attr
.mdsthreshold
) {
2819 opendata
->f_attr
.mdsthreshold
= pnfs_mdsthreshold_alloc();
2820 if (!opendata
->f_attr
.mdsthreshold
)
2821 goto err_free_label
;
2823 opendata
->o_arg
.open_bitmap
= &nfs4_pnfs_open_bitmap
[0];
2825 if (d_really_is_positive(dentry
))
2826 opendata
->state
= nfs4_get_open_state(d_inode(dentry
), sp
);
2828 status
= _nfs4_open_and_get_state(opendata
, fmode
, flags
, ctx
);
2830 goto err_free_label
;
2833 if ((opendata
->o_arg
.open_flags
& (O_CREAT
|O_EXCL
)) == (O_CREAT
|O_EXCL
) &&
2834 (opendata
->o_arg
.createmode
!= NFS4_CREATE_GUARDED
)) {
2835 nfs4_exclusive_attrset(opendata
, sattr
, &label
);
2837 * send create attributes which was not set by open
2838 * with an extra setattr.
2840 if (sattr
->ia_valid
& NFS4_VALID_ATTRS
) {
2841 nfs_fattr_init(opendata
->o_res
.f_attr
);
2842 status
= nfs4_do_setattr(state
->inode
, cred
,
2843 opendata
->o_res
.f_attr
, sattr
,
2844 ctx
, label
, olabel
);
2846 nfs_setattr_update_inode(state
->inode
, sattr
,
2847 opendata
->o_res
.f_attr
);
2848 nfs_setsecurity(state
->inode
, opendata
->o_res
.f_attr
, olabel
);
2852 if (opened
&& opendata
->file_created
)
2853 *opened
|= FILE_CREATED
;
2855 if (pnfs_use_threshold(ctx_th
, opendata
->f_attr
.mdsthreshold
, server
)) {
2856 *ctx_th
= opendata
->f_attr
.mdsthreshold
;
2857 opendata
->f_attr
.mdsthreshold
= NULL
;
2860 nfs4_label_free(olabel
);
2862 nfs4_opendata_put(opendata
);
2863 nfs4_put_state_owner(sp
);
2866 nfs4_label_free(olabel
);
2868 nfs4_opendata_put(opendata
);
2869 err_put_state_owner
:
2870 nfs4_put_state_owner(sp
);
2876 static struct nfs4_state
*nfs4_do_open(struct inode
*dir
,
2877 struct nfs_open_context
*ctx
,
2879 struct iattr
*sattr
,
2880 struct nfs4_label
*label
,
2883 struct nfs_server
*server
= NFS_SERVER(dir
);
2884 struct nfs4_exception exception
= { };
2885 struct nfs4_state
*res
;
2889 status
= _nfs4_do_open(dir
, ctx
, flags
, sattr
, label
, opened
);
2891 trace_nfs4_open_file(ctx
, flags
, status
);
2894 /* NOTE: BAD_SEQID means the server and client disagree about the
2895 * book-keeping w.r.t. state-changing operations
2896 * (OPEN/CLOSE/LOCK/LOCKU...)
2897 * It is actually a sign of a bug on the client or on the server.
2899 * If we receive a BAD_SEQID error in the particular case of
2900 * doing an OPEN, we assume that nfs_increment_open_seqid() will
2901 * have unhashed the old state_owner for us, and that we can
2902 * therefore safely retry using a new one. We should still warn
2903 * the user though...
2905 if (status
== -NFS4ERR_BAD_SEQID
) {
2906 pr_warn_ratelimited("NFS: v4 server %s "
2907 " returned a bad sequence-id error!\n",
2908 NFS_SERVER(dir
)->nfs_client
->cl_hostname
);
2909 exception
.retry
= 1;
2913 * BAD_STATEID on OPEN means that the server cancelled our
2914 * state before it received the OPEN_CONFIRM.
2915 * Recover by retrying the request as per the discussion
2916 * on Page 181 of RFC3530.
2918 if (status
== -NFS4ERR_BAD_STATEID
) {
2919 exception
.retry
= 1;
2922 if (status
== -EAGAIN
) {
2923 /* We must have found a delegation */
2924 exception
.retry
= 1;
2927 if (nfs4_clear_cap_atomic_open_v1(server
, status
, &exception
))
2929 res
= ERR_PTR(nfs4_handle_exception(server
,
2930 status
, &exception
));
2931 } while (exception
.retry
);
2935 static int _nfs4_do_setattr(struct inode
*inode
,
2936 struct nfs_setattrargs
*arg
,
2937 struct nfs_setattrres
*res
,
2938 struct rpc_cred
*cred
,
2939 struct nfs_open_context
*ctx
)
2941 struct nfs_server
*server
= NFS_SERVER(inode
);
2942 struct rpc_message msg
= {
2943 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETATTR
],
2948 struct rpc_cred
*delegation_cred
= NULL
;
2949 unsigned long timestamp
= jiffies
;
2954 nfs_fattr_init(res
->fattr
);
2956 /* Servers should only apply open mode checks for file size changes */
2957 truncate
= (arg
->iap
->ia_valid
& ATTR_SIZE
) ? true : false;
2958 fmode
= truncate
? FMODE_WRITE
: FMODE_READ
;
2960 if (nfs4_copy_delegation_stateid(inode
, fmode
, &arg
->stateid
, &delegation_cred
)) {
2961 /* Use that stateid */
2962 } else if (truncate
&& ctx
!= NULL
) {
2963 struct nfs_lock_context
*l_ctx
;
2964 if (!nfs4_valid_open_stateid(ctx
->state
))
2966 l_ctx
= nfs_get_lock_context(ctx
);
2968 return PTR_ERR(l_ctx
);
2969 status
= nfs4_select_rw_stateid(ctx
->state
, FMODE_WRITE
, l_ctx
,
2970 &arg
->stateid
, &delegation_cred
);
2971 nfs_put_lock_context(l_ctx
);
2975 nfs4_stateid_copy(&arg
->stateid
, &zero_stateid
);
2976 if (delegation_cred
)
2977 msg
.rpc_cred
= delegation_cred
;
2979 status
= nfs4_call_sync(server
->client
, server
, &msg
, &arg
->seq_args
, &res
->seq_res
, 1);
2981 put_rpccred(delegation_cred
);
2982 if (status
== 0 && ctx
!= NULL
)
2983 renew_lease(server
, timestamp
);
2984 trace_nfs4_setattr(inode
, &arg
->stateid
, status
);
2988 static int nfs4_do_setattr(struct inode
*inode
, struct rpc_cred
*cred
,
2989 struct nfs_fattr
*fattr
, struct iattr
*sattr
,
2990 struct nfs_open_context
*ctx
, struct nfs4_label
*ilabel
,
2991 struct nfs4_label
*olabel
)
2993 struct nfs_server
*server
= NFS_SERVER(inode
);
2994 struct nfs4_state
*state
= ctx
? ctx
->state
: NULL
;
2995 struct nfs_setattrargs arg
= {
2996 .fh
= NFS_FH(inode
),
2999 .bitmask
= server
->attr_bitmask
,
3002 struct nfs_setattrres res
= {
3007 struct nfs4_exception exception
= {
3010 .stateid
= &arg
.stateid
,
3014 arg
.bitmask
= nfs4_bitmask(server
, ilabel
);
3016 arg
.bitmask
= nfs4_bitmask(server
, olabel
);
3019 err
= _nfs4_do_setattr(inode
, &arg
, &res
, cred
, ctx
);
3021 case -NFS4ERR_OPENMODE
:
3022 if (!(sattr
->ia_valid
& ATTR_SIZE
)) {
3023 pr_warn_once("NFSv4: server %s is incorrectly "
3024 "applying open mode checks to "
3025 "a SETATTR that is not "
3026 "changing file size.\n",
3027 server
->nfs_client
->cl_hostname
);
3029 if (state
&& !(state
->state
& FMODE_WRITE
)) {
3031 if (sattr
->ia_valid
& ATTR_OPEN
)
3036 err
= nfs4_handle_exception(server
, err
, &exception
);
3037 } while (exception
.retry
);
3043 nfs4_wait_on_layoutreturn(struct inode
*inode
, struct rpc_task
*task
)
3045 if (inode
== NULL
|| !nfs_have_layout(inode
))
3048 return pnfs_wait_on_layoutreturn(inode
, task
);
3051 struct nfs4_closedata
{
3052 struct inode
*inode
;
3053 struct nfs4_state
*state
;
3054 struct nfs_closeargs arg
;
3055 struct nfs_closeres res
;
3057 struct nfs4_layoutreturn_args arg
;
3058 struct nfs4_layoutreturn_res res
;
3059 struct nfs4_xdr_opaque_data ld_private
;
3063 struct nfs_fattr fattr
;
3064 unsigned long timestamp
;
3067 static void nfs4_free_closedata(void *data
)
3069 struct nfs4_closedata
*calldata
= data
;
3070 struct nfs4_state_owner
*sp
= calldata
->state
->owner
;
3071 struct super_block
*sb
= calldata
->state
->inode
->i_sb
;
3073 if (calldata
->lr
.roc
)
3074 pnfs_roc_release(&calldata
->lr
.arg
, &calldata
->lr
.res
,
3075 calldata
->res
.lr_ret
);
3076 nfs4_put_open_state(calldata
->state
);
3077 nfs_free_seqid(calldata
->arg
.seqid
);
3078 nfs4_put_state_owner(sp
);
3079 nfs_sb_deactive(sb
);
3083 static void nfs4_close_done(struct rpc_task
*task
, void *data
)
3085 struct nfs4_closedata
*calldata
= data
;
3086 struct nfs4_state
*state
= calldata
->state
;
3087 struct nfs_server
*server
= NFS_SERVER(calldata
->inode
);
3088 nfs4_stateid
*res_stateid
= NULL
;
3090 dprintk("%s: begin!\n", __func__
);
3091 if (!nfs4_sequence_done(task
, &calldata
->res
.seq_res
))
3093 trace_nfs4_close(state
, &calldata
->arg
, &calldata
->res
, task
->tk_status
);
3095 /* Handle Layoutreturn errors */
3096 if (calldata
->arg
.lr_args
&& task
->tk_status
!= 0) {
3097 switch (calldata
->res
.lr_ret
) {
3099 calldata
->res
.lr_ret
= -NFS4ERR_NOMATCHING_LAYOUT
;
3102 calldata
->arg
.lr_args
= NULL
;
3103 calldata
->res
.lr_res
= NULL
;
3105 case -NFS4ERR_ADMIN_REVOKED
:
3106 case -NFS4ERR_DELEG_REVOKED
:
3107 case -NFS4ERR_EXPIRED
:
3108 case -NFS4ERR_BAD_STATEID
:
3109 case -NFS4ERR_OLD_STATEID
:
3110 case -NFS4ERR_UNKNOWN_LAYOUTTYPE
:
3111 case -NFS4ERR_WRONG_CRED
:
3112 calldata
->arg
.lr_args
= NULL
;
3113 calldata
->res
.lr_res
= NULL
;
3114 calldata
->res
.lr_ret
= 0;
3115 rpc_restart_call_prepare(task
);
3120 /* hmm. we are done with the inode, and in the process of freeing
3121 * the state_owner. we keep this around to process errors
3123 switch (task
->tk_status
) {
3125 res_stateid
= &calldata
->res
.stateid
;
3126 renew_lease(server
, calldata
->timestamp
);
3128 case -NFS4ERR_ACCESS
:
3129 if (calldata
->arg
.bitmask
!= NULL
) {
3130 calldata
->arg
.bitmask
= NULL
;
3131 calldata
->res
.fattr
= NULL
;
3132 task
->tk_status
= 0;
3133 rpc_restart_call_prepare(task
);
3138 case -NFS4ERR_ADMIN_REVOKED
:
3139 case -NFS4ERR_STALE_STATEID
:
3140 case -NFS4ERR_EXPIRED
:
3141 nfs4_free_revoked_stateid(server
,
3142 &calldata
->arg
.stateid
,
3143 task
->tk_msg
.rpc_cred
);
3144 case -NFS4ERR_OLD_STATEID
:
3145 case -NFS4ERR_BAD_STATEID
:
3146 if (!nfs4_stateid_match(&calldata
->arg
.stateid
,
3147 &state
->open_stateid
)) {
3148 rpc_restart_call_prepare(task
);
3151 if (calldata
->arg
.fmode
== 0)
3154 if (nfs4_async_handle_error(task
, server
, state
, NULL
) == -EAGAIN
) {
3155 rpc_restart_call_prepare(task
);
3159 nfs_clear_open_stateid(state
, &calldata
->arg
.stateid
,
3160 res_stateid
, calldata
->arg
.fmode
);
3162 nfs_release_seqid(calldata
->arg
.seqid
);
3163 nfs_refresh_inode(calldata
->inode
, &calldata
->fattr
);
3164 dprintk("%s: done, ret = %d!\n", __func__
, task
->tk_status
);
3167 static void nfs4_close_prepare(struct rpc_task
*task
, void *data
)
3169 struct nfs4_closedata
*calldata
= data
;
3170 struct nfs4_state
*state
= calldata
->state
;
3171 struct inode
*inode
= calldata
->inode
;
3172 bool is_rdonly
, is_wronly
, is_rdwr
;
3175 dprintk("%s: begin!\n", __func__
);
3176 if (nfs_wait_on_sequence(calldata
->arg
.seqid
, task
) != 0)
3179 task
->tk_msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_OPEN_DOWNGRADE
];
3180 spin_lock(&state
->owner
->so_lock
);
3181 is_rdwr
= test_bit(NFS_O_RDWR_STATE
, &state
->flags
);
3182 is_rdonly
= test_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
3183 is_wronly
= test_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
3184 nfs4_stateid_copy(&calldata
->arg
.stateid
, &state
->open_stateid
);
3185 /* Calculate the change in open mode */
3186 calldata
->arg
.fmode
= 0;
3187 if (state
->n_rdwr
== 0) {
3188 if (state
->n_rdonly
== 0)
3189 call_close
|= is_rdonly
;
3191 calldata
->arg
.fmode
|= FMODE_READ
;
3192 if (state
->n_wronly
== 0)
3193 call_close
|= is_wronly
;
3195 calldata
->arg
.fmode
|= FMODE_WRITE
;
3196 if (calldata
->arg
.fmode
!= (FMODE_READ
|FMODE_WRITE
))
3197 call_close
|= is_rdwr
;
3199 calldata
->arg
.fmode
|= FMODE_READ
|FMODE_WRITE
;
3201 if (!nfs4_valid_open_stateid(state
) ||
3202 test_bit(NFS_OPEN_STATE
, &state
->flags
) == 0)
3204 spin_unlock(&state
->owner
->so_lock
);
3207 /* Note: exit _without_ calling nfs4_close_done */
3211 if (!calldata
->lr
.roc
&& nfs4_wait_on_layoutreturn(inode
, task
)) {
3212 nfs_release_seqid(calldata
->arg
.seqid
);
3216 if (calldata
->arg
.fmode
== 0)
3217 task
->tk_msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_CLOSE
];
3219 if (calldata
->arg
.fmode
== 0 || calldata
->arg
.fmode
== FMODE_READ
) {
3220 /* Close-to-open cache consistency revalidation */
3221 if (!nfs4_have_delegation(inode
, FMODE_READ
))
3222 calldata
->arg
.bitmask
= NFS_SERVER(inode
)->cache_consistency_bitmask
;
3224 calldata
->arg
.bitmask
= NULL
;
3227 calldata
->arg
.share_access
=
3228 nfs4_map_atomic_open_share(NFS_SERVER(inode
),
3229 calldata
->arg
.fmode
, 0);
3231 if (calldata
->res
.fattr
== NULL
)
3232 calldata
->arg
.bitmask
= NULL
;
3233 else if (calldata
->arg
.bitmask
== NULL
)
3234 calldata
->res
.fattr
= NULL
;
3235 calldata
->timestamp
= jiffies
;
3236 if (nfs4_setup_sequence(NFS_SERVER(inode
),
3237 &calldata
->arg
.seq_args
,
3238 &calldata
->res
.seq_res
,
3240 nfs_release_seqid(calldata
->arg
.seqid
);
3241 dprintk("%s: done!\n", __func__
);
3244 task
->tk_action
= NULL
;
3246 nfs4_sequence_done(task
, &calldata
->res
.seq_res
);
3249 static const struct rpc_call_ops nfs4_close_ops
= {
3250 .rpc_call_prepare
= nfs4_close_prepare
,
3251 .rpc_call_done
= nfs4_close_done
,
3252 .rpc_release
= nfs4_free_closedata
,
3256 * It is possible for data to be read/written from a mem-mapped file
3257 * after the sys_close call (which hits the vfs layer as a flush).
3258 * This means that we can't safely call nfsv4 close on a file until
3259 * the inode is cleared. This in turn means that we are not good
3260 * NFSv4 citizens - we do not indicate to the server to update the file's
3261 * share state even when we are done with one of the three share
3262 * stateid's in the inode.
3264 * NOTE: Caller must be holding the sp->so_owner semaphore!
3266 int nfs4_do_close(struct nfs4_state
*state
, gfp_t gfp_mask
, int wait
)
3268 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
3269 struct nfs_seqid
*(*alloc_seqid
)(struct nfs_seqid_counter
*, gfp_t
);
3270 struct nfs4_closedata
*calldata
;
3271 struct nfs4_state_owner
*sp
= state
->owner
;
3272 struct rpc_task
*task
;
3273 struct rpc_message msg
= {
3274 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_CLOSE
],
3275 .rpc_cred
= state
->owner
->so_cred
,
3277 struct rpc_task_setup task_setup_data
= {
3278 .rpc_client
= server
->client
,
3279 .rpc_message
= &msg
,
3280 .callback_ops
= &nfs4_close_ops
,
3281 .workqueue
= nfsiod_workqueue
,
3282 .flags
= RPC_TASK_ASYNC
,
3284 int status
= -ENOMEM
;
3286 nfs4_state_protect(server
->nfs_client
, NFS_SP4_MACH_CRED_CLEANUP
,
3287 &task_setup_data
.rpc_client
, &msg
);
3289 calldata
= kzalloc(sizeof(*calldata
), gfp_mask
);
3290 if (calldata
== NULL
)
3292 nfs4_init_sequence(&calldata
->arg
.seq_args
, &calldata
->res
.seq_res
, 1);
3293 calldata
->inode
= state
->inode
;
3294 calldata
->state
= state
;
3295 calldata
->arg
.fh
= NFS_FH(state
->inode
);
3296 /* Serialization for the sequence id */
3297 alloc_seqid
= server
->nfs_client
->cl_mvops
->alloc_seqid
;
3298 calldata
->arg
.seqid
= alloc_seqid(&state
->owner
->so_seqid
, gfp_mask
);
3299 if (IS_ERR(calldata
->arg
.seqid
))
3300 goto out_free_calldata
;
3301 nfs_fattr_init(&calldata
->fattr
);
3302 calldata
->arg
.fmode
= 0;
3303 calldata
->lr
.arg
.ld_private
= &calldata
->lr
.ld_private
;
3304 calldata
->res
.fattr
= &calldata
->fattr
;
3305 calldata
->res
.seqid
= calldata
->arg
.seqid
;
3306 calldata
->res
.server
= server
;
3307 calldata
->res
.lr_ret
= -NFS4ERR_NOMATCHING_LAYOUT
;
3308 calldata
->lr
.roc
= pnfs_roc(state
->inode
,
3309 &calldata
->lr
.arg
, &calldata
->lr
.res
, msg
.rpc_cred
);
3310 if (calldata
->lr
.roc
) {
3311 calldata
->arg
.lr_args
= &calldata
->lr
.arg
;
3312 calldata
->res
.lr_res
= &calldata
->lr
.res
;
3314 nfs_sb_active(calldata
->inode
->i_sb
);
3316 msg
.rpc_argp
= &calldata
->arg
;
3317 msg
.rpc_resp
= &calldata
->res
;
3318 task_setup_data
.callback_data
= calldata
;
3319 task
= rpc_run_task(&task_setup_data
);
3321 return PTR_ERR(task
);
3324 status
= rpc_wait_for_completion_task(task
);
3330 nfs4_put_open_state(state
);
3331 nfs4_put_state_owner(sp
);
3335 static struct inode
*
3336 nfs4_atomic_open(struct inode
*dir
, struct nfs_open_context
*ctx
,
3337 int open_flags
, struct iattr
*attr
, int *opened
)
3339 struct nfs4_state
*state
;
3340 struct nfs4_label l
= {0, 0, 0, NULL
}, *label
= NULL
;
3342 label
= nfs4_label_init_security(dir
, ctx
->dentry
, attr
, &l
);
3344 /* Protect against concurrent sillydeletes */
3345 state
= nfs4_do_open(dir
, ctx
, open_flags
, attr
, label
, opened
);
3347 nfs4_label_release_security(label
);
3350 return ERR_CAST(state
);
3351 return state
->inode
;
3354 static void nfs4_close_context(struct nfs_open_context
*ctx
, int is_sync
)
3356 if (ctx
->state
== NULL
)
3359 nfs4_close_sync(ctx
->state
, ctx
->mode
);
3361 nfs4_close_state(ctx
->state
, ctx
->mode
);
3364 #define FATTR4_WORD1_NFS40_MASK (2*FATTR4_WORD1_MOUNTED_ON_FILEID - 1UL)
3365 #define FATTR4_WORD2_NFS41_MASK (2*FATTR4_WORD2_SUPPATTR_EXCLCREAT - 1UL)
3366 #define FATTR4_WORD2_NFS42_MASK (2*FATTR4_WORD2_MODE_UMASK - 1UL)
3368 static int _nfs4_server_capabilities(struct nfs_server
*server
, struct nfs_fh
*fhandle
)
3370 u32 bitmask
[3] = {}, minorversion
= server
->nfs_client
->cl_minorversion
;
3371 struct nfs4_server_caps_arg args
= {
3375 struct nfs4_server_caps_res res
= {};
3376 struct rpc_message msg
= {
3377 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SERVER_CAPS
],
3383 bitmask
[0] = FATTR4_WORD0_SUPPORTED_ATTRS
|
3384 FATTR4_WORD0_FH_EXPIRE_TYPE
|
3385 FATTR4_WORD0_LINK_SUPPORT
|
3386 FATTR4_WORD0_SYMLINK_SUPPORT
|
3387 FATTR4_WORD0_ACLSUPPORT
;
3389 bitmask
[2] = FATTR4_WORD2_SUPPATTR_EXCLCREAT
;
3391 status
= nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
3393 /* Sanity check the server answers */
3394 switch (minorversion
) {
3396 res
.attr_bitmask
[1] &= FATTR4_WORD1_NFS40_MASK
;
3397 res
.attr_bitmask
[2] = 0;
3400 res
.attr_bitmask
[2] &= FATTR4_WORD2_NFS41_MASK
;
3403 res
.attr_bitmask
[2] &= FATTR4_WORD2_NFS42_MASK
;
3405 memcpy(server
->attr_bitmask
, res
.attr_bitmask
, sizeof(server
->attr_bitmask
));
3406 server
->caps
&= ~(NFS_CAP_ACLS
|NFS_CAP_HARDLINKS
|
3407 NFS_CAP_SYMLINKS
|NFS_CAP_FILEID
|
3408 NFS_CAP_MODE
|NFS_CAP_NLINK
|NFS_CAP_OWNER
|
3409 NFS_CAP_OWNER_GROUP
|NFS_CAP_ATIME
|
3410 NFS_CAP_CTIME
|NFS_CAP_MTIME
|
3411 NFS_CAP_SECURITY_LABEL
);
3412 if (res
.attr_bitmask
[0] & FATTR4_WORD0_ACL
&&
3413 res
.acl_bitmask
& ACL4_SUPPORT_ALLOW_ACL
)
3414 server
->caps
|= NFS_CAP_ACLS
;
3415 if (res
.has_links
!= 0)
3416 server
->caps
|= NFS_CAP_HARDLINKS
;
3417 if (res
.has_symlinks
!= 0)
3418 server
->caps
|= NFS_CAP_SYMLINKS
;
3419 if (res
.attr_bitmask
[0] & FATTR4_WORD0_FILEID
)
3420 server
->caps
|= NFS_CAP_FILEID
;
3421 if (res
.attr_bitmask
[1] & FATTR4_WORD1_MODE
)
3422 server
->caps
|= NFS_CAP_MODE
;
3423 if (res
.attr_bitmask
[1] & FATTR4_WORD1_NUMLINKS
)
3424 server
->caps
|= NFS_CAP_NLINK
;
3425 if (res
.attr_bitmask
[1] & FATTR4_WORD1_OWNER
)
3426 server
->caps
|= NFS_CAP_OWNER
;
3427 if (res
.attr_bitmask
[1] & FATTR4_WORD1_OWNER_GROUP
)
3428 server
->caps
|= NFS_CAP_OWNER_GROUP
;
3429 if (res
.attr_bitmask
[1] & FATTR4_WORD1_TIME_ACCESS
)
3430 server
->caps
|= NFS_CAP_ATIME
;
3431 if (res
.attr_bitmask
[1] & FATTR4_WORD1_TIME_METADATA
)
3432 server
->caps
|= NFS_CAP_CTIME
;
3433 if (res
.attr_bitmask
[1] & FATTR4_WORD1_TIME_MODIFY
)
3434 server
->caps
|= NFS_CAP_MTIME
;
3435 #ifdef CONFIG_NFS_V4_SECURITY_LABEL
3436 if (res
.attr_bitmask
[2] & FATTR4_WORD2_SECURITY_LABEL
)
3437 server
->caps
|= NFS_CAP_SECURITY_LABEL
;
3439 memcpy(server
->attr_bitmask_nl
, res
.attr_bitmask
,
3440 sizeof(server
->attr_bitmask
));
3441 server
->attr_bitmask_nl
[2] &= ~FATTR4_WORD2_SECURITY_LABEL
;
3443 memcpy(server
->cache_consistency_bitmask
, res
.attr_bitmask
, sizeof(server
->cache_consistency_bitmask
));
3444 server
->cache_consistency_bitmask
[0] &= FATTR4_WORD0_CHANGE
|FATTR4_WORD0_SIZE
;
3445 server
->cache_consistency_bitmask
[1] &= FATTR4_WORD1_TIME_METADATA
|FATTR4_WORD1_TIME_MODIFY
;
3446 server
->cache_consistency_bitmask
[2] = 0;
3447 memcpy(server
->exclcreat_bitmask
, res
.exclcreat_bitmask
,
3448 sizeof(server
->exclcreat_bitmask
));
3449 server
->acl_bitmask
= res
.acl_bitmask
;
3450 server
->fh_expire_type
= res
.fh_expire_type
;
3456 int nfs4_server_capabilities(struct nfs_server
*server
, struct nfs_fh
*fhandle
)
3458 struct nfs4_exception exception
= { };
3461 err
= nfs4_handle_exception(server
,
3462 _nfs4_server_capabilities(server
, fhandle
),
3464 } while (exception
.retry
);
3468 static int _nfs4_lookup_root(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
3469 struct nfs_fsinfo
*info
)
3472 struct nfs4_lookup_root_arg args
= {
3475 struct nfs4_lookup_res res
= {
3477 .fattr
= info
->fattr
,
3480 struct rpc_message msg
= {
3481 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOOKUP_ROOT
],
3486 bitmask
[0] = nfs4_fattr_bitmap
[0];
3487 bitmask
[1] = nfs4_fattr_bitmap
[1];
3489 * Process the label in the upcoming getfattr
3491 bitmask
[2] = nfs4_fattr_bitmap
[2] & ~FATTR4_WORD2_SECURITY_LABEL
;
3493 nfs_fattr_init(info
->fattr
);
3494 return nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
3497 static int nfs4_lookup_root(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
3498 struct nfs_fsinfo
*info
)
3500 struct nfs4_exception exception
= { };
3503 err
= _nfs4_lookup_root(server
, fhandle
, info
);
3504 trace_nfs4_lookup_root(server
, fhandle
, info
->fattr
, err
);
3507 case -NFS4ERR_WRONGSEC
:
3510 err
= nfs4_handle_exception(server
, err
, &exception
);
3512 } while (exception
.retry
);
3517 static int nfs4_lookup_root_sec(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
3518 struct nfs_fsinfo
*info
, rpc_authflavor_t flavor
)
3520 struct rpc_auth_create_args auth_args
= {
3521 .pseudoflavor
= flavor
,
3523 struct rpc_auth
*auth
;
3526 auth
= rpcauth_create(&auth_args
, server
->client
);
3531 ret
= nfs4_lookup_root(server
, fhandle
, info
);
3537 * Retry pseudoroot lookup with various security flavors. We do this when:
3539 * NFSv4.0: the PUTROOTFH operation returns NFS4ERR_WRONGSEC
3540 * NFSv4.1: the server does not support the SECINFO_NO_NAME operation
3542 * Returns zero on success, or a negative NFS4ERR value, or a
3543 * negative errno value.
3545 static int nfs4_find_root_sec(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
3546 struct nfs_fsinfo
*info
)
3548 /* Per 3530bis 15.33.5 */
3549 static const rpc_authflavor_t flav_array
[] = {
3553 RPC_AUTH_UNIX
, /* courtesy */
3556 int status
= -EPERM
;
3559 if (server
->auth_info
.flavor_len
> 0) {
3560 /* try each flavor specified by user */
3561 for (i
= 0; i
< server
->auth_info
.flavor_len
; i
++) {
3562 status
= nfs4_lookup_root_sec(server
, fhandle
, info
,
3563 server
->auth_info
.flavors
[i
]);
3564 if (status
== -NFS4ERR_WRONGSEC
|| status
== -EACCES
)
3569 /* no flavors specified by user, try default list */
3570 for (i
= 0; i
< ARRAY_SIZE(flav_array
); i
++) {
3571 status
= nfs4_lookup_root_sec(server
, fhandle
, info
,
3573 if (status
== -NFS4ERR_WRONGSEC
|| status
== -EACCES
)
3580 * -EACCESS could mean that the user doesn't have correct permissions
3581 * to access the mount. It could also mean that we tried to mount
3582 * with a gss auth flavor, but rpc.gssd isn't running. Either way,
3583 * existing mount programs don't handle -EACCES very well so it should
3584 * be mapped to -EPERM instead.
3586 if (status
== -EACCES
)
3592 * nfs4_proc_get_rootfh - get file handle for server's pseudoroot
3593 * @server: initialized nfs_server handle
3594 * @fhandle: we fill in the pseudo-fs root file handle
3595 * @info: we fill in an FSINFO struct
3596 * @auth_probe: probe the auth flavours
3598 * Returns zero on success, or a negative errno.
3600 int nfs4_proc_get_rootfh(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
3601 struct nfs_fsinfo
*info
,
3607 status
= nfs4_lookup_root(server
, fhandle
, info
);
3609 if (auth_probe
|| status
== NFS4ERR_WRONGSEC
)
3610 status
= server
->nfs_client
->cl_mvops
->find_root_sec(server
,
3614 status
= nfs4_server_capabilities(server
, fhandle
);
3616 status
= nfs4_do_fsinfo(server
, fhandle
, info
);
3618 return nfs4_map_errors(status
);
3621 static int nfs4_proc_get_root(struct nfs_server
*server
, struct nfs_fh
*mntfh
,
3622 struct nfs_fsinfo
*info
)
3625 struct nfs_fattr
*fattr
= info
->fattr
;
3626 struct nfs4_label
*label
= NULL
;
3628 error
= nfs4_server_capabilities(server
, mntfh
);
3630 dprintk("nfs4_get_root: getcaps error = %d\n", -error
);
3634 label
= nfs4_label_alloc(server
, GFP_KERNEL
);
3636 return PTR_ERR(label
);
3638 error
= nfs4_proc_getattr(server
, mntfh
, fattr
, label
);
3640 dprintk("nfs4_get_root: getattr error = %d\n", -error
);
3641 goto err_free_label
;
3644 if (fattr
->valid
& NFS_ATTR_FATTR_FSID
&&
3645 !nfs_fsid_equal(&server
->fsid
, &fattr
->fsid
))
3646 memcpy(&server
->fsid
, &fattr
->fsid
, sizeof(server
->fsid
));
3649 nfs4_label_free(label
);
3655 * Get locations and (maybe) other attributes of a referral.
3656 * Note that we'll actually follow the referral later when
3657 * we detect fsid mismatch in inode revalidation
3659 static int nfs4_get_referral(struct rpc_clnt
*client
, struct inode
*dir
,
3660 const struct qstr
*name
, struct nfs_fattr
*fattr
,
3661 struct nfs_fh
*fhandle
)
3663 int status
= -ENOMEM
;
3664 struct page
*page
= NULL
;
3665 struct nfs4_fs_locations
*locations
= NULL
;
3667 page
= alloc_page(GFP_KERNEL
);
3670 locations
= kmalloc(sizeof(struct nfs4_fs_locations
), GFP_KERNEL
);
3671 if (locations
== NULL
)
3674 status
= nfs4_proc_fs_locations(client
, dir
, name
, locations
, page
);
3679 * If the fsid didn't change, this is a migration event, not a
3680 * referral. Cause us to drop into the exception handler, which
3681 * will kick off migration recovery.
3683 if (nfs_fsid_equal(&NFS_SERVER(dir
)->fsid
, &locations
->fattr
.fsid
)) {
3684 dprintk("%s: server did not return a different fsid for"
3685 " a referral at %s\n", __func__
, name
->name
);
3686 status
= -NFS4ERR_MOVED
;
3689 /* Fixup attributes for the nfs_lookup() call to nfs_fhget() */
3690 nfs_fixup_referral_attributes(&locations
->fattr
);
3692 /* replace the lookup nfs_fattr with the locations nfs_fattr */
3693 memcpy(fattr
, &locations
->fattr
, sizeof(struct nfs_fattr
));
3694 memset(fhandle
, 0, sizeof(struct nfs_fh
));
3702 static int _nfs4_proc_getattr(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
3703 struct nfs_fattr
*fattr
, struct nfs4_label
*label
)
3705 struct nfs4_getattr_arg args
= {
3707 .bitmask
= server
->attr_bitmask
,
3709 struct nfs4_getattr_res res
= {
3714 struct rpc_message msg
= {
3715 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GETATTR
],
3720 args
.bitmask
= nfs4_bitmask(server
, label
);
3722 nfs_fattr_init(fattr
);
3723 return nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
3726 static int nfs4_proc_getattr(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
3727 struct nfs_fattr
*fattr
, struct nfs4_label
*label
)
3729 struct nfs4_exception exception
= { };
3732 err
= _nfs4_proc_getattr(server
, fhandle
, fattr
, label
);
3733 trace_nfs4_getattr(server
, fhandle
, fattr
, err
);
3734 err
= nfs4_handle_exception(server
, err
,
3736 } while (exception
.retry
);
3741 * The file is not closed if it is opened due to the a request to change
3742 * the size of the file. The open call will not be needed once the
3743 * VFS layer lookup-intents are implemented.
3745 * Close is called when the inode is destroyed.
3746 * If we haven't opened the file for O_WRONLY, we
3747 * need to in the size_change case to obtain a stateid.
3750 * Because OPEN is always done by name in nfsv4, it is
3751 * possible that we opened a different file by the same
3752 * name. We can recognize this race condition, but we
3753 * can't do anything about it besides returning an error.
3755 * This will be fixed with VFS changes (lookup-intent).
3758 nfs4_proc_setattr(struct dentry
*dentry
, struct nfs_fattr
*fattr
,
3759 struct iattr
*sattr
)
3761 struct inode
*inode
= d_inode(dentry
);
3762 struct rpc_cred
*cred
= NULL
;
3763 struct nfs_open_context
*ctx
= NULL
;
3764 struct nfs4_label
*label
= NULL
;
3767 if (pnfs_ld_layoutret_on_setattr(inode
) &&
3768 sattr
->ia_valid
& ATTR_SIZE
&&
3769 sattr
->ia_size
< i_size_read(inode
))
3770 pnfs_commit_and_return_layout(inode
);
3772 nfs_fattr_init(fattr
);
3774 /* Deal with open(O_TRUNC) */
3775 if (sattr
->ia_valid
& ATTR_OPEN
)
3776 sattr
->ia_valid
&= ~(ATTR_MTIME
|ATTR_CTIME
);
3778 /* Optimization: if the end result is no change, don't RPC */
3779 if ((sattr
->ia_valid
& ~(ATTR_FILE
|ATTR_OPEN
)) == 0)
3782 /* Search for an existing open(O_WRITE) file */
3783 if (sattr
->ia_valid
& ATTR_FILE
) {
3785 ctx
= nfs_file_open_context(sattr
->ia_file
);
3790 label
= nfs4_label_alloc(NFS_SERVER(inode
), GFP_KERNEL
);
3792 return PTR_ERR(label
);
3794 status
= nfs4_do_setattr(inode
, cred
, fattr
, sattr
, ctx
, NULL
, label
);
3796 nfs_setattr_update_inode(inode
, sattr
, fattr
);
3797 nfs_setsecurity(inode
, fattr
, label
);
3799 nfs4_label_free(label
);
3803 static int _nfs4_proc_lookup(struct rpc_clnt
*clnt
, struct inode
*dir
,
3804 const struct qstr
*name
, struct nfs_fh
*fhandle
,
3805 struct nfs_fattr
*fattr
, struct nfs4_label
*label
)
3807 struct nfs_server
*server
= NFS_SERVER(dir
);
3809 struct nfs4_lookup_arg args
= {
3810 .bitmask
= server
->attr_bitmask
,
3811 .dir_fh
= NFS_FH(dir
),
3814 struct nfs4_lookup_res res
= {
3820 struct rpc_message msg
= {
3821 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOOKUP
],
3826 args
.bitmask
= nfs4_bitmask(server
, label
);
3828 nfs_fattr_init(fattr
);
3830 dprintk("NFS call lookup %s\n", name
->name
);
3831 status
= nfs4_call_sync(clnt
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
3832 dprintk("NFS reply lookup: %d\n", status
);
3836 static void nfs_fixup_secinfo_attributes(struct nfs_fattr
*fattr
)
3838 fattr
->valid
|= NFS_ATTR_FATTR_TYPE
| NFS_ATTR_FATTR_MODE
|
3839 NFS_ATTR_FATTR_NLINK
| NFS_ATTR_FATTR_MOUNTPOINT
;
3840 fattr
->mode
= S_IFDIR
| S_IRUGO
| S_IXUGO
;
3844 static int nfs4_proc_lookup_common(struct rpc_clnt
**clnt
, struct inode
*dir
,
3845 const struct qstr
*name
, struct nfs_fh
*fhandle
,
3846 struct nfs_fattr
*fattr
, struct nfs4_label
*label
)
3848 struct nfs4_exception exception
= { };
3849 struct rpc_clnt
*client
= *clnt
;
3852 err
= _nfs4_proc_lookup(client
, dir
, name
, fhandle
, fattr
, label
);
3853 trace_nfs4_lookup(dir
, name
, err
);
3855 case -NFS4ERR_BADNAME
:
3858 case -NFS4ERR_MOVED
:
3859 err
= nfs4_get_referral(client
, dir
, name
, fattr
, fhandle
);
3860 if (err
== -NFS4ERR_MOVED
)
3861 err
= nfs4_handle_exception(NFS_SERVER(dir
), err
, &exception
);
3863 case -NFS4ERR_WRONGSEC
:
3865 if (client
!= *clnt
)
3867 client
= nfs4_negotiate_security(client
, dir
, name
);
3869 return PTR_ERR(client
);
3871 exception
.retry
= 1;
3874 err
= nfs4_handle_exception(NFS_SERVER(dir
), err
, &exception
);
3876 } while (exception
.retry
);
3881 else if (client
!= *clnt
)
3882 rpc_shutdown_client(client
);
3887 static int nfs4_proc_lookup(struct inode
*dir
, const struct qstr
*name
,
3888 struct nfs_fh
*fhandle
, struct nfs_fattr
*fattr
,
3889 struct nfs4_label
*label
)
3892 struct rpc_clnt
*client
= NFS_CLIENT(dir
);
3894 status
= nfs4_proc_lookup_common(&client
, dir
, name
, fhandle
, fattr
, label
);
3895 if (client
!= NFS_CLIENT(dir
)) {
3896 rpc_shutdown_client(client
);
3897 nfs_fixup_secinfo_attributes(fattr
);
3903 nfs4_proc_lookup_mountpoint(struct inode
*dir
, const struct qstr
*name
,
3904 struct nfs_fh
*fhandle
, struct nfs_fattr
*fattr
)
3906 struct rpc_clnt
*client
= NFS_CLIENT(dir
);
3909 status
= nfs4_proc_lookup_common(&client
, dir
, name
, fhandle
, fattr
, NULL
);
3911 return ERR_PTR(status
);
3912 return (client
== NFS_CLIENT(dir
)) ? rpc_clone_client(client
) : client
;
3915 static int _nfs4_proc_access(struct inode
*inode
, struct nfs_access_entry
*entry
)
3917 struct nfs_server
*server
= NFS_SERVER(inode
);
3918 struct nfs4_accessargs args
= {
3919 .fh
= NFS_FH(inode
),
3920 .bitmask
= server
->cache_consistency_bitmask
,
3922 struct nfs4_accessres res
= {
3925 struct rpc_message msg
= {
3926 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_ACCESS
],
3929 .rpc_cred
= entry
->cred
,
3931 int mode
= entry
->mask
;
3935 * Determine which access bits we want to ask for...
3937 if (mode
& MAY_READ
)
3938 args
.access
|= NFS4_ACCESS_READ
;
3939 if (S_ISDIR(inode
->i_mode
)) {
3940 if (mode
& MAY_WRITE
)
3941 args
.access
|= NFS4_ACCESS_MODIFY
| NFS4_ACCESS_EXTEND
| NFS4_ACCESS_DELETE
;
3942 if (mode
& MAY_EXEC
)
3943 args
.access
|= NFS4_ACCESS_LOOKUP
;
3945 if (mode
& MAY_WRITE
)
3946 args
.access
|= NFS4_ACCESS_MODIFY
| NFS4_ACCESS_EXTEND
;
3947 if (mode
& MAY_EXEC
)
3948 args
.access
|= NFS4_ACCESS_EXECUTE
;
3951 res
.fattr
= nfs_alloc_fattr();
3952 if (res
.fattr
== NULL
)
3955 status
= nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
3957 nfs_access_set_mask(entry
, res
.access
);
3958 nfs_refresh_inode(inode
, res
.fattr
);
3960 nfs_free_fattr(res
.fattr
);
3964 static int nfs4_proc_access(struct inode
*inode
, struct nfs_access_entry
*entry
)
3966 struct nfs4_exception exception
= { };
3969 err
= _nfs4_proc_access(inode
, entry
);
3970 trace_nfs4_access(inode
, err
);
3971 err
= nfs4_handle_exception(NFS_SERVER(inode
), err
,
3973 } while (exception
.retry
);
3978 * TODO: For the time being, we don't try to get any attributes
3979 * along with any of the zero-copy operations READ, READDIR,
3982 * In the case of the first three, we want to put the GETATTR
3983 * after the read-type operation -- this is because it is hard
3984 * to predict the length of a GETATTR response in v4, and thus
3985 * align the READ data correctly. This means that the GETATTR
3986 * may end up partially falling into the page cache, and we should
3987 * shift it into the 'tail' of the xdr_buf before processing.
3988 * To do this efficiently, we need to know the total length
3989 * of data received, which doesn't seem to be available outside
3992 * In the case of WRITE, we also want to put the GETATTR after
3993 * the operation -- in this case because we want to make sure
3994 * we get the post-operation mtime and size.
3996 * Both of these changes to the XDR layer would in fact be quite
3997 * minor, but I decided to leave them for a subsequent patch.
3999 static int _nfs4_proc_readlink(struct inode
*inode
, struct page
*page
,
4000 unsigned int pgbase
, unsigned int pglen
)
4002 struct nfs4_readlink args
= {
4003 .fh
= NFS_FH(inode
),
4008 struct nfs4_readlink_res res
;
4009 struct rpc_message msg
= {
4010 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_READLINK
],
4015 return nfs4_call_sync(NFS_SERVER(inode
)->client
, NFS_SERVER(inode
), &msg
, &args
.seq_args
, &res
.seq_res
, 0);
4018 static int nfs4_proc_readlink(struct inode
*inode
, struct page
*page
,
4019 unsigned int pgbase
, unsigned int pglen
)
4021 struct nfs4_exception exception
= { };
4024 err
= _nfs4_proc_readlink(inode
, page
, pgbase
, pglen
);
4025 trace_nfs4_readlink(inode
, err
);
4026 err
= nfs4_handle_exception(NFS_SERVER(inode
), err
,
4028 } while (exception
.retry
);
4033 * This is just for mknod. open(O_CREAT) will always do ->open_context().
4036 nfs4_proc_create(struct inode
*dir
, struct dentry
*dentry
, struct iattr
*sattr
,
4039 struct nfs_server
*server
= NFS_SERVER(dir
);
4040 struct nfs4_label l
, *ilabel
= NULL
;
4041 struct nfs_open_context
*ctx
;
4042 struct nfs4_state
*state
;
4045 ctx
= alloc_nfs_open_context(dentry
, FMODE_READ
, NULL
);
4047 return PTR_ERR(ctx
);
4049 ilabel
= nfs4_label_init_security(dir
, dentry
, sattr
, &l
);
4051 if (!(server
->attr_bitmask
[2] & FATTR4_WORD2_MODE_UMASK
))
4052 sattr
->ia_mode
&= ~current_umask();
4053 state
= nfs4_do_open(dir
, ctx
, flags
, sattr
, ilabel
, NULL
);
4054 if (IS_ERR(state
)) {
4055 status
= PTR_ERR(state
);
4059 nfs4_label_release_security(ilabel
);
4060 put_nfs_open_context(ctx
);
4064 static int _nfs4_proc_remove(struct inode
*dir
, const struct qstr
*name
)
4066 struct nfs_server
*server
= NFS_SERVER(dir
);
4067 struct nfs_removeargs args
= {
4071 struct nfs_removeres res
= {
4074 struct rpc_message msg
= {
4075 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_REMOVE
],
4079 unsigned long timestamp
= jiffies
;
4082 status
= nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 1);
4084 update_changeattr(dir
, &res
.cinfo
, timestamp
);
4088 static int nfs4_proc_remove(struct inode
*dir
, const struct qstr
*name
)
4090 struct nfs4_exception exception
= { };
4093 err
= _nfs4_proc_remove(dir
, name
);
4094 trace_nfs4_remove(dir
, name
, err
);
4095 err
= nfs4_handle_exception(NFS_SERVER(dir
), err
,
4097 } while (exception
.retry
);
4101 static void nfs4_proc_unlink_setup(struct rpc_message
*msg
, struct inode
*dir
)
4103 struct nfs_server
*server
= NFS_SERVER(dir
);
4104 struct nfs_removeargs
*args
= msg
->rpc_argp
;
4105 struct nfs_removeres
*res
= msg
->rpc_resp
;
4107 res
->server
= server
;
4108 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_REMOVE
];
4109 nfs4_init_sequence(&args
->seq_args
, &res
->seq_res
, 1);
4111 nfs_fattr_init(res
->dir_attr
);
4114 static void nfs4_proc_unlink_rpc_prepare(struct rpc_task
*task
, struct nfs_unlinkdata
*data
)
4116 nfs4_setup_sequence(NFS_SB(data
->dentry
->d_sb
),
4117 &data
->args
.seq_args
,
4122 static int nfs4_proc_unlink_done(struct rpc_task
*task
, struct inode
*dir
)
4124 struct nfs_unlinkdata
*data
= task
->tk_calldata
;
4125 struct nfs_removeres
*res
= &data
->res
;
4127 if (!nfs4_sequence_done(task
, &res
->seq_res
))
4129 if (nfs4_async_handle_error(task
, res
->server
, NULL
,
4130 &data
->timeout
) == -EAGAIN
)
4132 if (task
->tk_status
== 0)
4133 update_changeattr(dir
, &res
->cinfo
, res
->dir_attr
->time_start
);
4137 static void nfs4_proc_rename_setup(struct rpc_message
*msg
, struct inode
*dir
)
4139 struct nfs_server
*server
= NFS_SERVER(dir
);
4140 struct nfs_renameargs
*arg
= msg
->rpc_argp
;
4141 struct nfs_renameres
*res
= msg
->rpc_resp
;
4143 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RENAME
];
4144 res
->server
= server
;
4145 nfs4_init_sequence(&arg
->seq_args
, &res
->seq_res
, 1);
4148 static void nfs4_proc_rename_rpc_prepare(struct rpc_task
*task
, struct nfs_renamedata
*data
)
4150 nfs4_setup_sequence(NFS_SERVER(data
->old_dir
),
4151 &data
->args
.seq_args
,
4156 static int nfs4_proc_rename_done(struct rpc_task
*task
, struct inode
*old_dir
,
4157 struct inode
*new_dir
)
4159 struct nfs_renamedata
*data
= task
->tk_calldata
;
4160 struct nfs_renameres
*res
= &data
->res
;
4162 if (!nfs4_sequence_done(task
, &res
->seq_res
))
4164 if (nfs4_async_handle_error(task
, res
->server
, NULL
, &data
->timeout
) == -EAGAIN
)
4167 if (task
->tk_status
== 0) {
4168 update_changeattr(old_dir
, &res
->old_cinfo
, res
->old_fattr
->time_start
);
4169 if (new_dir
!= old_dir
)
4170 update_changeattr(new_dir
, &res
->new_cinfo
, res
->new_fattr
->time_start
);
4175 static int _nfs4_proc_link(struct inode
*inode
, struct inode
*dir
, const struct qstr
*name
)
4177 struct nfs_server
*server
= NFS_SERVER(inode
);
4178 struct nfs4_link_arg arg
= {
4179 .fh
= NFS_FH(inode
),
4180 .dir_fh
= NFS_FH(dir
),
4182 .bitmask
= server
->attr_bitmask
,
4184 struct nfs4_link_res res
= {
4188 struct rpc_message msg
= {
4189 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LINK
],
4193 int status
= -ENOMEM
;
4195 res
.fattr
= nfs_alloc_fattr();
4196 if (res
.fattr
== NULL
)
4199 res
.label
= nfs4_label_alloc(server
, GFP_KERNEL
);
4200 if (IS_ERR(res
.label
)) {
4201 status
= PTR_ERR(res
.label
);
4204 arg
.bitmask
= nfs4_bitmask(server
, res
.label
);
4206 status
= nfs4_call_sync(server
->client
, server
, &msg
, &arg
.seq_args
, &res
.seq_res
, 1);
4208 update_changeattr(dir
, &res
.cinfo
, res
.fattr
->time_start
);
4209 status
= nfs_post_op_update_inode(inode
, res
.fattr
);
4211 nfs_setsecurity(inode
, res
.fattr
, res
.label
);
4215 nfs4_label_free(res
.label
);
4218 nfs_free_fattr(res
.fattr
);
4222 static int nfs4_proc_link(struct inode
*inode
, struct inode
*dir
, const struct qstr
*name
)
4224 struct nfs4_exception exception
= { };
4227 err
= nfs4_handle_exception(NFS_SERVER(inode
),
4228 _nfs4_proc_link(inode
, dir
, name
),
4230 } while (exception
.retry
);
4234 struct nfs4_createdata
{
4235 struct rpc_message msg
;
4236 struct nfs4_create_arg arg
;
4237 struct nfs4_create_res res
;
4239 struct nfs_fattr fattr
;
4240 struct nfs4_label
*label
;
4243 static struct nfs4_createdata
*nfs4_alloc_createdata(struct inode
*dir
,
4244 const struct qstr
*name
, struct iattr
*sattr
, u32 ftype
)
4246 struct nfs4_createdata
*data
;
4248 data
= kzalloc(sizeof(*data
), GFP_KERNEL
);
4250 struct nfs_server
*server
= NFS_SERVER(dir
);
4252 data
->label
= nfs4_label_alloc(server
, GFP_KERNEL
);
4253 if (IS_ERR(data
->label
))
4256 data
->msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_CREATE
];
4257 data
->msg
.rpc_argp
= &data
->arg
;
4258 data
->msg
.rpc_resp
= &data
->res
;
4259 data
->arg
.dir_fh
= NFS_FH(dir
);
4260 data
->arg
.server
= server
;
4261 data
->arg
.name
= name
;
4262 data
->arg
.attrs
= sattr
;
4263 data
->arg
.ftype
= ftype
;
4264 data
->arg
.bitmask
= nfs4_bitmask(server
, data
->label
);
4265 data
->arg
.umask
= current_umask();
4266 data
->res
.server
= server
;
4267 data
->res
.fh
= &data
->fh
;
4268 data
->res
.fattr
= &data
->fattr
;
4269 data
->res
.label
= data
->label
;
4270 nfs_fattr_init(data
->res
.fattr
);
4278 static int nfs4_do_create(struct inode
*dir
, struct dentry
*dentry
, struct nfs4_createdata
*data
)
4280 int status
= nfs4_call_sync(NFS_SERVER(dir
)->client
, NFS_SERVER(dir
), &data
->msg
,
4281 &data
->arg
.seq_args
, &data
->res
.seq_res
, 1);
4283 update_changeattr(dir
, &data
->res
.dir_cinfo
,
4284 data
->res
.fattr
->time_start
);
4285 status
= nfs_instantiate(dentry
, data
->res
.fh
, data
->res
.fattr
, data
->res
.label
);
4290 static void nfs4_free_createdata(struct nfs4_createdata
*data
)
4292 nfs4_label_free(data
->label
);
4296 static int _nfs4_proc_symlink(struct inode
*dir
, struct dentry
*dentry
,
4297 struct page
*page
, unsigned int len
, struct iattr
*sattr
,
4298 struct nfs4_label
*label
)
4300 struct nfs4_createdata
*data
;
4301 int status
= -ENAMETOOLONG
;
4303 if (len
> NFS4_MAXPATHLEN
)
4307 data
= nfs4_alloc_createdata(dir
, &dentry
->d_name
, sattr
, NF4LNK
);
4311 data
->msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SYMLINK
];
4312 data
->arg
.u
.symlink
.pages
= &page
;
4313 data
->arg
.u
.symlink
.len
= len
;
4314 data
->arg
.label
= label
;
4316 status
= nfs4_do_create(dir
, dentry
, data
);
4318 nfs4_free_createdata(data
);
4323 static int nfs4_proc_symlink(struct inode
*dir
, struct dentry
*dentry
,
4324 struct page
*page
, unsigned int len
, struct iattr
*sattr
)
4326 struct nfs4_exception exception
= { };
4327 struct nfs4_label l
, *label
= NULL
;
4330 label
= nfs4_label_init_security(dir
, dentry
, sattr
, &l
);
4333 err
= _nfs4_proc_symlink(dir
, dentry
, page
, len
, sattr
, label
);
4334 trace_nfs4_symlink(dir
, &dentry
->d_name
, err
);
4335 err
= nfs4_handle_exception(NFS_SERVER(dir
), err
,
4337 } while (exception
.retry
);
4339 nfs4_label_release_security(label
);
4343 static int _nfs4_proc_mkdir(struct inode
*dir
, struct dentry
*dentry
,
4344 struct iattr
*sattr
, struct nfs4_label
*label
)
4346 struct nfs4_createdata
*data
;
4347 int status
= -ENOMEM
;
4349 data
= nfs4_alloc_createdata(dir
, &dentry
->d_name
, sattr
, NF4DIR
);
4353 data
->arg
.label
= label
;
4354 status
= nfs4_do_create(dir
, dentry
, data
);
4356 nfs4_free_createdata(data
);
4361 static int nfs4_proc_mkdir(struct inode
*dir
, struct dentry
*dentry
,
4362 struct iattr
*sattr
)
4364 struct nfs_server
*server
= NFS_SERVER(dir
);
4365 struct nfs4_exception exception
= { };
4366 struct nfs4_label l
, *label
= NULL
;
4369 label
= nfs4_label_init_security(dir
, dentry
, sattr
, &l
);
4371 if (!(server
->attr_bitmask
[2] & FATTR4_WORD2_MODE_UMASK
))
4372 sattr
->ia_mode
&= ~current_umask();
4374 err
= _nfs4_proc_mkdir(dir
, dentry
, sattr
, label
);
4375 trace_nfs4_mkdir(dir
, &dentry
->d_name
, err
);
4376 err
= nfs4_handle_exception(NFS_SERVER(dir
), err
,
4378 } while (exception
.retry
);
4379 nfs4_label_release_security(label
);
4384 static int _nfs4_proc_readdir(struct dentry
*dentry
, struct rpc_cred
*cred
,
4385 u64 cookie
, struct page
**pages
, unsigned int count
, int plus
)
4387 struct inode
*dir
= d_inode(dentry
);
4388 struct nfs4_readdir_arg args
= {
4393 .bitmask
= NFS_SERVER(d_inode(dentry
))->attr_bitmask
,
4396 struct nfs4_readdir_res res
;
4397 struct rpc_message msg
= {
4398 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_READDIR
],
4405 dprintk("%s: dentry = %pd2, cookie = %Lu\n", __func__
,
4407 (unsigned long long)cookie
);
4408 nfs4_setup_readdir(cookie
, NFS_I(dir
)->cookieverf
, dentry
, &args
);
4409 res
.pgbase
= args
.pgbase
;
4410 status
= nfs4_call_sync(NFS_SERVER(dir
)->client
, NFS_SERVER(dir
), &msg
, &args
.seq_args
, &res
.seq_res
, 0);
4412 memcpy(NFS_I(dir
)->cookieverf
, res
.verifier
.data
, NFS4_VERIFIER_SIZE
);
4413 status
+= args
.pgbase
;
4416 nfs_invalidate_atime(dir
);
4418 dprintk("%s: returns %d\n", __func__
, status
);
4422 static int nfs4_proc_readdir(struct dentry
*dentry
, struct rpc_cred
*cred
,
4423 u64 cookie
, struct page
**pages
, unsigned int count
, int plus
)
4425 struct nfs4_exception exception
= { };
4428 err
= _nfs4_proc_readdir(dentry
, cred
, cookie
,
4429 pages
, count
, plus
);
4430 trace_nfs4_readdir(d_inode(dentry
), err
);
4431 err
= nfs4_handle_exception(NFS_SERVER(d_inode(dentry
)), err
,
4433 } while (exception
.retry
);
4437 static int _nfs4_proc_mknod(struct inode
*dir
, struct dentry
*dentry
,
4438 struct iattr
*sattr
, struct nfs4_label
*label
, dev_t rdev
)
4440 struct nfs4_createdata
*data
;
4441 int mode
= sattr
->ia_mode
;
4442 int status
= -ENOMEM
;
4444 data
= nfs4_alloc_createdata(dir
, &dentry
->d_name
, sattr
, NF4SOCK
);
4449 data
->arg
.ftype
= NF4FIFO
;
4450 else if (S_ISBLK(mode
)) {
4451 data
->arg
.ftype
= NF4BLK
;
4452 data
->arg
.u
.device
.specdata1
= MAJOR(rdev
);
4453 data
->arg
.u
.device
.specdata2
= MINOR(rdev
);
4455 else if (S_ISCHR(mode
)) {
4456 data
->arg
.ftype
= NF4CHR
;
4457 data
->arg
.u
.device
.specdata1
= MAJOR(rdev
);
4458 data
->arg
.u
.device
.specdata2
= MINOR(rdev
);
4459 } else if (!S_ISSOCK(mode
)) {
4464 data
->arg
.label
= label
;
4465 status
= nfs4_do_create(dir
, dentry
, data
);
4467 nfs4_free_createdata(data
);
4472 static int nfs4_proc_mknod(struct inode
*dir
, struct dentry
*dentry
,
4473 struct iattr
*sattr
, dev_t rdev
)
4475 struct nfs_server
*server
= NFS_SERVER(dir
);
4476 struct nfs4_exception exception
= { };
4477 struct nfs4_label l
, *label
= NULL
;
4480 label
= nfs4_label_init_security(dir
, dentry
, sattr
, &l
);
4482 if (!(server
->attr_bitmask
[2] & FATTR4_WORD2_MODE_UMASK
))
4483 sattr
->ia_mode
&= ~current_umask();
4485 err
= _nfs4_proc_mknod(dir
, dentry
, sattr
, label
, rdev
);
4486 trace_nfs4_mknod(dir
, &dentry
->d_name
, err
);
4487 err
= nfs4_handle_exception(NFS_SERVER(dir
), err
,
4489 } while (exception
.retry
);
4491 nfs4_label_release_security(label
);
4496 static int _nfs4_proc_statfs(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
4497 struct nfs_fsstat
*fsstat
)
4499 struct nfs4_statfs_arg args
= {
4501 .bitmask
= server
->attr_bitmask
,
4503 struct nfs4_statfs_res res
= {
4506 struct rpc_message msg
= {
4507 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_STATFS
],
4512 nfs_fattr_init(fsstat
->fattr
);
4513 return nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
4516 static int nfs4_proc_statfs(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fsstat
*fsstat
)
4518 struct nfs4_exception exception
= { };
4521 err
= nfs4_handle_exception(server
,
4522 _nfs4_proc_statfs(server
, fhandle
, fsstat
),
4524 } while (exception
.retry
);
4528 static int _nfs4_do_fsinfo(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
4529 struct nfs_fsinfo
*fsinfo
)
4531 struct nfs4_fsinfo_arg args
= {
4533 .bitmask
= server
->attr_bitmask
,
4535 struct nfs4_fsinfo_res res
= {
4538 struct rpc_message msg
= {
4539 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_FSINFO
],
4544 return nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
4547 static int nfs4_do_fsinfo(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fsinfo
*fsinfo
)
4549 struct nfs4_exception exception
= { };
4550 unsigned long now
= jiffies
;
4554 err
= _nfs4_do_fsinfo(server
, fhandle
, fsinfo
);
4555 trace_nfs4_fsinfo(server
, fhandle
, fsinfo
->fattr
, err
);
4557 nfs4_set_lease_period(server
->nfs_client
,
4558 fsinfo
->lease_time
* HZ
,
4562 err
= nfs4_handle_exception(server
, err
, &exception
);
4563 } while (exception
.retry
);
4567 static int nfs4_proc_fsinfo(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fsinfo
*fsinfo
)
4571 nfs_fattr_init(fsinfo
->fattr
);
4572 error
= nfs4_do_fsinfo(server
, fhandle
, fsinfo
);
4574 /* block layout checks this! */
4575 server
->pnfs_blksize
= fsinfo
->blksize
;
4576 set_pnfs_layoutdriver(server
, fhandle
, fsinfo
);
4582 static int _nfs4_proc_pathconf(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
4583 struct nfs_pathconf
*pathconf
)
4585 struct nfs4_pathconf_arg args
= {
4587 .bitmask
= server
->attr_bitmask
,
4589 struct nfs4_pathconf_res res
= {
4590 .pathconf
= pathconf
,
4592 struct rpc_message msg
= {
4593 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_PATHCONF
],
4598 /* None of the pathconf attributes are mandatory to implement */
4599 if ((args
.bitmask
[0] & nfs4_pathconf_bitmap
[0]) == 0) {
4600 memset(pathconf
, 0, sizeof(*pathconf
));
4604 nfs_fattr_init(pathconf
->fattr
);
4605 return nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
4608 static int nfs4_proc_pathconf(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
4609 struct nfs_pathconf
*pathconf
)
4611 struct nfs4_exception exception
= { };
4615 err
= nfs4_handle_exception(server
,
4616 _nfs4_proc_pathconf(server
, fhandle
, pathconf
),
4618 } while (exception
.retry
);
4622 int nfs4_set_rw_stateid(nfs4_stateid
*stateid
,
4623 const struct nfs_open_context
*ctx
,
4624 const struct nfs_lock_context
*l_ctx
,
4627 return nfs4_select_rw_stateid(ctx
->state
, fmode
, l_ctx
, stateid
, NULL
);
4629 EXPORT_SYMBOL_GPL(nfs4_set_rw_stateid
);
4631 static bool nfs4_stateid_is_current(nfs4_stateid
*stateid
,
4632 const struct nfs_open_context
*ctx
,
4633 const struct nfs_lock_context
*l_ctx
,
4636 nfs4_stateid current_stateid
;
4638 /* If the current stateid represents a lost lock, then exit */
4639 if (nfs4_set_rw_stateid(¤t_stateid
, ctx
, l_ctx
, fmode
) == -EIO
)
4641 return nfs4_stateid_match(stateid
, ¤t_stateid
);
4644 static bool nfs4_error_stateid_expired(int err
)
4647 case -NFS4ERR_DELEG_REVOKED
:
4648 case -NFS4ERR_ADMIN_REVOKED
:
4649 case -NFS4ERR_BAD_STATEID
:
4650 case -NFS4ERR_STALE_STATEID
:
4651 case -NFS4ERR_OLD_STATEID
:
4652 case -NFS4ERR_OPENMODE
:
4653 case -NFS4ERR_EXPIRED
:
4659 static int nfs4_read_done_cb(struct rpc_task
*task
, struct nfs_pgio_header
*hdr
)
4661 struct nfs_server
*server
= NFS_SERVER(hdr
->inode
);
4663 trace_nfs4_read(hdr
, task
->tk_status
);
4664 if (task
->tk_status
< 0) {
4665 struct nfs4_exception exception
= {
4666 .inode
= hdr
->inode
,
4667 .state
= hdr
->args
.context
->state
,
4668 .stateid
= &hdr
->args
.stateid
,
4670 task
->tk_status
= nfs4_async_handle_exception(task
,
4671 server
, task
->tk_status
, &exception
);
4672 if (exception
.retry
) {
4673 rpc_restart_call_prepare(task
);
4678 if (task
->tk_status
> 0)
4679 renew_lease(server
, hdr
->timestamp
);
4683 static bool nfs4_read_stateid_changed(struct rpc_task
*task
,
4684 struct nfs_pgio_args
*args
)
4687 if (!nfs4_error_stateid_expired(task
->tk_status
) ||
4688 nfs4_stateid_is_current(&args
->stateid
,
4693 rpc_restart_call_prepare(task
);
4697 static int nfs4_read_done(struct rpc_task
*task
, struct nfs_pgio_header
*hdr
)
4700 dprintk("--> %s\n", __func__
);
4702 if (!nfs4_sequence_done(task
, &hdr
->res
.seq_res
))
4704 if (nfs4_read_stateid_changed(task
, &hdr
->args
))
4706 if (task
->tk_status
> 0)
4707 nfs_invalidate_atime(hdr
->inode
);
4708 return hdr
->pgio_done_cb
? hdr
->pgio_done_cb(task
, hdr
) :
4709 nfs4_read_done_cb(task
, hdr
);
4712 static void nfs4_proc_read_setup(struct nfs_pgio_header
*hdr
,
4713 struct rpc_message
*msg
)
4715 hdr
->timestamp
= jiffies
;
4716 if (!hdr
->pgio_done_cb
)
4717 hdr
->pgio_done_cb
= nfs4_read_done_cb
;
4718 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_READ
];
4719 nfs4_init_sequence(&hdr
->args
.seq_args
, &hdr
->res
.seq_res
, 0);
4722 static int nfs4_proc_pgio_rpc_prepare(struct rpc_task
*task
,
4723 struct nfs_pgio_header
*hdr
)
4725 if (nfs4_setup_sequence(NFS_SERVER(hdr
->inode
),
4726 &hdr
->args
.seq_args
,
4730 if (nfs4_set_rw_stateid(&hdr
->args
.stateid
, hdr
->args
.context
,
4731 hdr
->args
.lock_context
,
4732 hdr
->rw_ops
->rw_mode
) == -EIO
)
4734 if (unlikely(test_bit(NFS_CONTEXT_BAD
, &hdr
->args
.context
->flags
)))
4739 static int nfs4_write_done_cb(struct rpc_task
*task
,
4740 struct nfs_pgio_header
*hdr
)
4742 struct inode
*inode
= hdr
->inode
;
4744 trace_nfs4_write(hdr
, task
->tk_status
);
4745 if (task
->tk_status
< 0) {
4746 struct nfs4_exception exception
= {
4747 .inode
= hdr
->inode
,
4748 .state
= hdr
->args
.context
->state
,
4749 .stateid
= &hdr
->args
.stateid
,
4751 task
->tk_status
= nfs4_async_handle_exception(task
,
4752 NFS_SERVER(inode
), task
->tk_status
,
4754 if (exception
.retry
) {
4755 rpc_restart_call_prepare(task
);
4759 if (task
->tk_status
>= 0) {
4760 renew_lease(NFS_SERVER(inode
), hdr
->timestamp
);
4761 nfs_writeback_update_inode(hdr
);
4766 static bool nfs4_write_stateid_changed(struct rpc_task
*task
,
4767 struct nfs_pgio_args
*args
)
4770 if (!nfs4_error_stateid_expired(task
->tk_status
) ||
4771 nfs4_stateid_is_current(&args
->stateid
,
4776 rpc_restart_call_prepare(task
);
4780 static int nfs4_write_done(struct rpc_task
*task
, struct nfs_pgio_header
*hdr
)
4782 if (!nfs4_sequence_done(task
, &hdr
->res
.seq_res
))
4784 if (nfs4_write_stateid_changed(task
, &hdr
->args
))
4786 return hdr
->pgio_done_cb
? hdr
->pgio_done_cb(task
, hdr
) :
4787 nfs4_write_done_cb(task
, hdr
);
4791 bool nfs4_write_need_cache_consistency_data(struct nfs_pgio_header
*hdr
)
4793 /* Don't request attributes for pNFS or O_DIRECT writes */
4794 if (hdr
->ds_clp
!= NULL
|| hdr
->dreq
!= NULL
)
4796 /* Otherwise, request attributes if and only if we don't hold
4799 return nfs4_have_delegation(hdr
->inode
, FMODE_READ
) == 0;
4802 static void nfs4_proc_write_setup(struct nfs_pgio_header
*hdr
,
4803 struct rpc_message
*msg
)
4805 struct nfs_server
*server
= NFS_SERVER(hdr
->inode
);
4807 if (!nfs4_write_need_cache_consistency_data(hdr
)) {
4808 hdr
->args
.bitmask
= NULL
;
4809 hdr
->res
.fattr
= NULL
;
4811 hdr
->args
.bitmask
= server
->cache_consistency_bitmask
;
4813 if (!hdr
->pgio_done_cb
)
4814 hdr
->pgio_done_cb
= nfs4_write_done_cb
;
4815 hdr
->res
.server
= server
;
4816 hdr
->timestamp
= jiffies
;
4818 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_WRITE
];
4819 nfs4_init_sequence(&hdr
->args
.seq_args
, &hdr
->res
.seq_res
, 1);
4822 static void nfs4_proc_commit_rpc_prepare(struct rpc_task
*task
, struct nfs_commit_data
*data
)
4824 nfs4_setup_sequence(NFS_SERVER(data
->inode
),
4825 &data
->args
.seq_args
,
4830 static int nfs4_commit_done_cb(struct rpc_task
*task
, struct nfs_commit_data
*data
)
4832 struct inode
*inode
= data
->inode
;
4834 trace_nfs4_commit(data
, task
->tk_status
);
4835 if (nfs4_async_handle_error(task
, NFS_SERVER(inode
),
4836 NULL
, NULL
) == -EAGAIN
) {
4837 rpc_restart_call_prepare(task
);
4843 static int nfs4_commit_done(struct rpc_task
*task
, struct nfs_commit_data
*data
)
4845 if (!nfs4_sequence_done(task
, &data
->res
.seq_res
))
4847 return data
->commit_done_cb(task
, data
);
4850 static void nfs4_proc_commit_setup(struct nfs_commit_data
*data
, struct rpc_message
*msg
)
4852 struct nfs_server
*server
= NFS_SERVER(data
->inode
);
4854 if (data
->commit_done_cb
== NULL
)
4855 data
->commit_done_cb
= nfs4_commit_done_cb
;
4856 data
->res
.server
= server
;
4857 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_COMMIT
];
4858 nfs4_init_sequence(&data
->args
.seq_args
, &data
->res
.seq_res
, 1);
4861 struct nfs4_renewdata
{
4862 struct nfs_client
*client
;
4863 unsigned long timestamp
;
4867 * nfs4_proc_async_renew(): This is not one of the nfs_rpc_ops; it is a special
4868 * standalone procedure for queueing an asynchronous RENEW.
4870 static void nfs4_renew_release(void *calldata
)
4872 struct nfs4_renewdata
*data
= calldata
;
4873 struct nfs_client
*clp
= data
->client
;
4875 if (atomic_read(&clp
->cl_count
) > 1)
4876 nfs4_schedule_state_renewal(clp
);
4877 nfs_put_client(clp
);
4881 static void nfs4_renew_done(struct rpc_task
*task
, void *calldata
)
4883 struct nfs4_renewdata
*data
= calldata
;
4884 struct nfs_client
*clp
= data
->client
;
4885 unsigned long timestamp
= data
->timestamp
;
4887 trace_nfs4_renew_async(clp
, task
->tk_status
);
4888 switch (task
->tk_status
) {
4891 case -NFS4ERR_LEASE_MOVED
:
4892 nfs4_schedule_lease_moved_recovery(clp
);
4895 /* Unless we're shutting down, schedule state recovery! */
4896 if (test_bit(NFS_CS_RENEWD
, &clp
->cl_res_state
) == 0)
4898 if (task
->tk_status
!= NFS4ERR_CB_PATH_DOWN
) {
4899 nfs4_schedule_lease_recovery(clp
);
4902 nfs4_schedule_path_down_recovery(clp
);
4904 do_renew_lease(clp
, timestamp
);
4907 static const struct rpc_call_ops nfs4_renew_ops
= {
4908 .rpc_call_done
= nfs4_renew_done
,
4909 .rpc_release
= nfs4_renew_release
,
4912 static int nfs4_proc_async_renew(struct nfs_client
*clp
, struct rpc_cred
*cred
, unsigned renew_flags
)
4914 struct rpc_message msg
= {
4915 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RENEW
],
4919 struct nfs4_renewdata
*data
;
4921 if (renew_flags
== 0)
4923 if (!atomic_inc_not_zero(&clp
->cl_count
))
4925 data
= kmalloc(sizeof(*data
), GFP_NOFS
);
4929 data
->timestamp
= jiffies
;
4930 return rpc_call_async(clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
,
4931 &nfs4_renew_ops
, data
);
4934 static int nfs4_proc_renew(struct nfs_client
*clp
, struct rpc_cred
*cred
)
4936 struct rpc_message msg
= {
4937 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RENEW
],
4941 unsigned long now
= jiffies
;
4944 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
4947 do_renew_lease(clp
, now
);
4951 static inline int nfs4_server_supports_acls(struct nfs_server
*server
)
4953 return server
->caps
& NFS_CAP_ACLS
;
4956 /* Assuming that XATTR_SIZE_MAX is a multiple of PAGE_SIZE, and that
4957 * it's OK to put sizeof(void) * (XATTR_SIZE_MAX/PAGE_SIZE) bytes on
4960 #define NFS4ACL_MAXPAGES DIV_ROUND_UP(XATTR_SIZE_MAX, PAGE_SIZE)
4962 static int buf_to_pages_noslab(const void *buf
, size_t buflen
,
4963 struct page
**pages
)
4965 struct page
*newpage
, **spages
;
4971 len
= min_t(size_t, PAGE_SIZE
, buflen
);
4972 newpage
= alloc_page(GFP_KERNEL
);
4974 if (newpage
== NULL
)
4976 memcpy(page_address(newpage
), buf
, len
);
4981 } while (buflen
!= 0);
4987 __free_page(spages
[rc
-1]);
4991 struct nfs4_cached_acl
{
4997 static void nfs4_set_cached_acl(struct inode
*inode
, struct nfs4_cached_acl
*acl
)
4999 struct nfs_inode
*nfsi
= NFS_I(inode
);
5001 spin_lock(&inode
->i_lock
);
5002 kfree(nfsi
->nfs4_acl
);
5003 nfsi
->nfs4_acl
= acl
;
5004 spin_unlock(&inode
->i_lock
);
5007 static void nfs4_zap_acl_attr(struct inode
*inode
)
5009 nfs4_set_cached_acl(inode
, NULL
);
5012 static inline ssize_t
nfs4_read_cached_acl(struct inode
*inode
, char *buf
, size_t buflen
)
5014 struct nfs_inode
*nfsi
= NFS_I(inode
);
5015 struct nfs4_cached_acl
*acl
;
5018 spin_lock(&inode
->i_lock
);
5019 acl
= nfsi
->nfs4_acl
;
5022 if (buf
== NULL
) /* user is just asking for length */
5024 if (acl
->cached
== 0)
5026 ret
= -ERANGE
; /* see getxattr(2) man page */
5027 if (acl
->len
> buflen
)
5029 memcpy(buf
, acl
->data
, acl
->len
);
5033 spin_unlock(&inode
->i_lock
);
5037 static void nfs4_write_cached_acl(struct inode
*inode
, struct page
**pages
, size_t pgbase
, size_t acl_len
)
5039 struct nfs4_cached_acl
*acl
;
5040 size_t buflen
= sizeof(*acl
) + acl_len
;
5042 if (buflen
<= PAGE_SIZE
) {
5043 acl
= kmalloc(buflen
, GFP_KERNEL
);
5047 _copy_from_pages(acl
->data
, pages
, pgbase
, acl_len
);
5049 acl
= kmalloc(sizeof(*acl
), GFP_KERNEL
);
5056 nfs4_set_cached_acl(inode
, acl
);
5060 * The getxattr API returns the required buffer length when called with a
5061 * NULL buf. The NFSv4 acl tool then calls getxattr again after allocating
5062 * the required buf. On a NULL buf, we send a page of data to the server
5063 * guessing that the ACL request can be serviced by a page. If so, we cache
5064 * up to the page of ACL data, and the 2nd call to getxattr is serviced by
5065 * the cache. If not so, we throw away the page, and cache the required
5066 * length. The next getxattr call will then produce another round trip to
5067 * the server, this time with the input buf of the required size.
5069 static ssize_t
__nfs4_get_acl_uncached(struct inode
*inode
, void *buf
, size_t buflen
)
5071 struct page
*pages
[NFS4ACL_MAXPAGES
] = {NULL
, };
5072 struct nfs_getaclargs args
= {
5073 .fh
= NFS_FH(inode
),
5077 struct nfs_getaclres res
= {
5080 struct rpc_message msg
= {
5081 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GETACL
],
5085 unsigned int npages
= DIV_ROUND_UP(buflen
, PAGE_SIZE
);
5086 int ret
= -ENOMEM
, i
;
5088 /* As long as we're doing a round trip to the server anyway,
5089 * let's be prepared for a page of acl data. */
5092 if (npages
> ARRAY_SIZE(pages
))
5095 for (i
= 0; i
< npages
; i
++) {
5096 pages
[i
] = alloc_page(GFP_KERNEL
);
5101 /* for decoding across pages */
5102 res
.acl_scratch
= alloc_page(GFP_KERNEL
);
5103 if (!res
.acl_scratch
)
5106 args
.acl_len
= npages
* PAGE_SIZE
;
5108 dprintk("%s buf %p buflen %zu npages %d args.acl_len %zu\n",
5109 __func__
, buf
, buflen
, npages
, args
.acl_len
);
5110 ret
= nfs4_call_sync(NFS_SERVER(inode
)->client
, NFS_SERVER(inode
),
5111 &msg
, &args
.seq_args
, &res
.seq_res
, 0);
5115 /* Handle the case where the passed-in buffer is too short */
5116 if (res
.acl_flags
& NFS4_ACL_TRUNC
) {
5117 /* Did the user only issue a request for the acl length? */
5123 nfs4_write_cached_acl(inode
, pages
, res
.acl_data_offset
, res
.acl_len
);
5125 if (res
.acl_len
> buflen
) {
5129 _copy_from_pages(buf
, pages
, res
.acl_data_offset
, res
.acl_len
);
5134 for (i
= 0; i
< npages
; i
++)
5136 __free_page(pages
[i
]);
5137 if (res
.acl_scratch
)
5138 __free_page(res
.acl_scratch
);
5142 static ssize_t
nfs4_get_acl_uncached(struct inode
*inode
, void *buf
, size_t buflen
)
5144 struct nfs4_exception exception
= { };
5147 ret
= __nfs4_get_acl_uncached(inode
, buf
, buflen
);
5148 trace_nfs4_get_acl(inode
, ret
);
5151 ret
= nfs4_handle_exception(NFS_SERVER(inode
), ret
, &exception
);
5152 } while (exception
.retry
);
5156 static ssize_t
nfs4_proc_get_acl(struct inode
*inode
, void *buf
, size_t buflen
)
5158 struct nfs_server
*server
= NFS_SERVER(inode
);
5161 if (!nfs4_server_supports_acls(server
))
5163 ret
= nfs_revalidate_inode(server
, inode
);
5166 if (NFS_I(inode
)->cache_validity
& NFS_INO_INVALID_ACL
)
5167 nfs_zap_acl_cache(inode
);
5168 ret
= nfs4_read_cached_acl(inode
, buf
, buflen
);
5170 /* -ENOENT is returned if there is no ACL or if there is an ACL
5171 * but no cached acl data, just the acl length */
5173 return nfs4_get_acl_uncached(inode
, buf
, buflen
);
5176 static int __nfs4_proc_set_acl(struct inode
*inode
, const void *buf
, size_t buflen
)
5178 struct nfs_server
*server
= NFS_SERVER(inode
);
5179 struct page
*pages
[NFS4ACL_MAXPAGES
];
5180 struct nfs_setaclargs arg
= {
5181 .fh
= NFS_FH(inode
),
5185 struct nfs_setaclres res
;
5186 struct rpc_message msg
= {
5187 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETACL
],
5191 unsigned int npages
= DIV_ROUND_UP(buflen
, PAGE_SIZE
);
5194 if (!nfs4_server_supports_acls(server
))
5196 if (npages
> ARRAY_SIZE(pages
))
5198 i
= buf_to_pages_noslab(buf
, buflen
, arg
.acl_pages
);
5201 nfs4_inode_return_delegation(inode
);
5202 ret
= nfs4_call_sync(server
->client
, server
, &msg
, &arg
.seq_args
, &res
.seq_res
, 1);
5205 * Free each page after tx, so the only ref left is
5206 * held by the network stack
5209 put_page(pages
[i
-1]);
5212 * Acl update can result in inode attribute update.
5213 * so mark the attribute cache invalid.
5215 spin_lock(&inode
->i_lock
);
5216 NFS_I(inode
)->cache_validity
|= NFS_INO_INVALID_ATTR
;
5217 spin_unlock(&inode
->i_lock
);
5218 nfs_access_zap_cache(inode
);
5219 nfs_zap_acl_cache(inode
);
5223 static int nfs4_proc_set_acl(struct inode
*inode
, const void *buf
, size_t buflen
)
5225 struct nfs4_exception exception
= { };
5228 err
= __nfs4_proc_set_acl(inode
, buf
, buflen
);
5229 trace_nfs4_set_acl(inode
, err
);
5230 err
= nfs4_handle_exception(NFS_SERVER(inode
), err
,
5232 } while (exception
.retry
);
5236 #ifdef CONFIG_NFS_V4_SECURITY_LABEL
5237 static int _nfs4_get_security_label(struct inode
*inode
, void *buf
,
5240 struct nfs_server
*server
= NFS_SERVER(inode
);
5241 struct nfs_fattr fattr
;
5242 struct nfs4_label label
= {0, 0, buflen
, buf
};
5244 u32 bitmask
[3] = { 0, 0, FATTR4_WORD2_SECURITY_LABEL
};
5245 struct nfs4_getattr_arg arg
= {
5246 .fh
= NFS_FH(inode
),
5249 struct nfs4_getattr_res res
= {
5254 struct rpc_message msg
= {
5255 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GETATTR
],
5261 nfs_fattr_init(&fattr
);
5263 ret
= nfs4_call_sync(server
->client
, server
, &msg
, &arg
.seq_args
, &res
.seq_res
, 0);
5266 if (!(fattr
.valid
& NFS_ATTR_FATTR_V4_SECURITY_LABEL
))
5268 if (buflen
< label
.len
)
5273 static int nfs4_get_security_label(struct inode
*inode
, void *buf
,
5276 struct nfs4_exception exception
= { };
5279 if (!nfs_server_capable(inode
, NFS_CAP_SECURITY_LABEL
))
5283 err
= _nfs4_get_security_label(inode
, buf
, buflen
);
5284 trace_nfs4_get_security_label(inode
, err
);
5285 err
= nfs4_handle_exception(NFS_SERVER(inode
), err
,
5287 } while (exception
.retry
);
5291 static int _nfs4_do_set_security_label(struct inode
*inode
,
5292 struct nfs4_label
*ilabel
,
5293 struct nfs_fattr
*fattr
,
5294 struct nfs4_label
*olabel
)
5297 struct iattr sattr
= {0};
5298 struct nfs_server
*server
= NFS_SERVER(inode
);
5299 const u32 bitmask
[3] = { 0, 0, FATTR4_WORD2_SECURITY_LABEL
};
5300 struct nfs_setattrargs arg
= {
5301 .fh
= NFS_FH(inode
),
5307 struct nfs_setattrres res
= {
5312 struct rpc_message msg
= {
5313 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETATTR
],
5319 nfs4_stateid_copy(&arg
.stateid
, &zero_stateid
);
5321 status
= nfs4_call_sync(server
->client
, server
, &msg
, &arg
.seq_args
, &res
.seq_res
, 1);
5323 dprintk("%s failed: %d\n", __func__
, status
);
5328 static int nfs4_do_set_security_label(struct inode
*inode
,
5329 struct nfs4_label
*ilabel
,
5330 struct nfs_fattr
*fattr
,
5331 struct nfs4_label
*olabel
)
5333 struct nfs4_exception exception
= { };
5337 err
= _nfs4_do_set_security_label(inode
, ilabel
,
5339 trace_nfs4_set_security_label(inode
, err
);
5340 err
= nfs4_handle_exception(NFS_SERVER(inode
), err
,
5342 } while (exception
.retry
);
5347 nfs4_set_security_label(struct inode
*inode
, const void *buf
, size_t buflen
)
5349 struct nfs4_label ilabel
, *olabel
= NULL
;
5350 struct nfs_fattr fattr
;
5351 struct rpc_cred
*cred
;
5354 if (!nfs_server_capable(inode
, NFS_CAP_SECURITY_LABEL
))
5357 nfs_fattr_init(&fattr
);
5361 ilabel
.label
= (char *)buf
;
5362 ilabel
.len
= buflen
;
5364 cred
= rpc_lookup_cred();
5366 return PTR_ERR(cred
);
5368 olabel
= nfs4_label_alloc(NFS_SERVER(inode
), GFP_KERNEL
);
5369 if (IS_ERR(olabel
)) {
5370 status
= -PTR_ERR(olabel
);
5374 status
= nfs4_do_set_security_label(inode
, &ilabel
, &fattr
, olabel
);
5376 nfs_setsecurity(inode
, &fattr
, olabel
);
5378 nfs4_label_free(olabel
);
5383 #endif /* CONFIG_NFS_V4_SECURITY_LABEL */
5386 static void nfs4_init_boot_verifier(const struct nfs_client
*clp
,
5387 nfs4_verifier
*bootverf
)
5391 if (test_bit(NFS4CLNT_PURGE_STATE
, &clp
->cl_state
)) {
5392 /* An impossible timestamp guarantees this value
5393 * will never match a generated boot time. */
5394 verf
[0] = cpu_to_be32(U32_MAX
);
5395 verf
[1] = cpu_to_be32(U32_MAX
);
5397 struct nfs_net
*nn
= net_generic(clp
->cl_net
, nfs_net_id
);
5398 u64 ns
= ktime_to_ns(nn
->boot_time
);
5400 verf
[0] = cpu_to_be32(ns
>> 32);
5401 verf
[1] = cpu_to_be32(ns
);
5403 memcpy(bootverf
->data
, verf
, sizeof(bootverf
->data
));
5407 nfs4_init_nonuniform_client_string(struct nfs_client
*clp
)
5412 if (clp
->cl_owner_id
!= NULL
)
5416 len
= 14 + strlen(clp
->cl_ipaddr
) + 1 +
5417 strlen(rpc_peeraddr2str(clp
->cl_rpcclient
, RPC_DISPLAY_ADDR
)) +
5419 strlen(rpc_peeraddr2str(clp
->cl_rpcclient
, RPC_DISPLAY_PROTO
)) +
5423 if (len
> NFS4_OPAQUE_LIMIT
+ 1)
5427 * Since this string is allocated at mount time, and held until the
5428 * nfs_client is destroyed, we can use GFP_KERNEL here w/o worrying
5429 * about a memory-reclaim deadlock.
5431 str
= kmalloc(len
, GFP_KERNEL
);
5436 scnprintf(str
, len
, "Linux NFSv4.0 %s/%s %s",
5438 rpc_peeraddr2str(clp
->cl_rpcclient
, RPC_DISPLAY_ADDR
),
5439 rpc_peeraddr2str(clp
->cl_rpcclient
, RPC_DISPLAY_PROTO
));
5442 clp
->cl_owner_id
= str
;
5447 nfs4_init_uniquifier_client_string(struct nfs_client
*clp
)
5452 len
= 10 + 10 + 1 + 10 + 1 +
5453 strlen(nfs4_client_id_uniquifier
) + 1 +
5454 strlen(clp
->cl_rpcclient
->cl_nodename
) + 1;
5456 if (len
> NFS4_OPAQUE_LIMIT
+ 1)
5460 * Since this string is allocated at mount time, and held until the
5461 * nfs_client is destroyed, we can use GFP_KERNEL here w/o worrying
5462 * about a memory-reclaim deadlock.
5464 str
= kmalloc(len
, GFP_KERNEL
);
5468 scnprintf(str
, len
, "Linux NFSv%u.%u %s/%s",
5469 clp
->rpc_ops
->version
, clp
->cl_minorversion
,
5470 nfs4_client_id_uniquifier
,
5471 clp
->cl_rpcclient
->cl_nodename
);
5472 clp
->cl_owner_id
= str
;
5477 nfs4_init_uniform_client_string(struct nfs_client
*clp
)
5482 if (clp
->cl_owner_id
!= NULL
)
5485 if (nfs4_client_id_uniquifier
[0] != '\0')
5486 return nfs4_init_uniquifier_client_string(clp
);
5488 len
= 10 + 10 + 1 + 10 + 1 +
5489 strlen(clp
->cl_rpcclient
->cl_nodename
) + 1;
5491 if (len
> NFS4_OPAQUE_LIMIT
+ 1)
5495 * Since this string is allocated at mount time, and held until the
5496 * nfs_client is destroyed, we can use GFP_KERNEL here w/o worrying
5497 * about a memory-reclaim deadlock.
5499 str
= kmalloc(len
, GFP_KERNEL
);
5503 scnprintf(str
, len
, "Linux NFSv%u.%u %s",
5504 clp
->rpc_ops
->version
, clp
->cl_minorversion
,
5505 clp
->cl_rpcclient
->cl_nodename
);
5506 clp
->cl_owner_id
= str
;
5511 * nfs4_callback_up_net() starts only "tcp" and "tcp6" callback
5512 * services. Advertise one based on the address family of the
5516 nfs4_init_callback_netid(const struct nfs_client
*clp
, char *buf
, size_t len
)
5518 if (strchr(clp
->cl_ipaddr
, ':') != NULL
)
5519 return scnprintf(buf
, len
, "tcp6");
5521 return scnprintf(buf
, len
, "tcp");
5524 static void nfs4_setclientid_done(struct rpc_task
*task
, void *calldata
)
5526 struct nfs4_setclientid
*sc
= calldata
;
5528 if (task
->tk_status
== 0)
5529 sc
->sc_cred
= get_rpccred(task
->tk_rqstp
->rq_cred
);
5532 static const struct rpc_call_ops nfs4_setclientid_ops
= {
5533 .rpc_call_done
= nfs4_setclientid_done
,
5537 * nfs4_proc_setclientid - Negotiate client ID
5538 * @clp: state data structure
5539 * @program: RPC program for NFSv4 callback service
5540 * @port: IP port number for NFS4 callback service
5541 * @cred: RPC credential to use for this call
5542 * @res: where to place the result
5544 * Returns zero, a negative errno, or a negative NFS4ERR status code.
5546 int nfs4_proc_setclientid(struct nfs_client
*clp
, u32 program
,
5547 unsigned short port
, struct rpc_cred
*cred
,
5548 struct nfs4_setclientid_res
*res
)
5550 nfs4_verifier sc_verifier
;
5551 struct nfs4_setclientid setclientid
= {
5552 .sc_verifier
= &sc_verifier
,
5556 struct rpc_message msg
= {
5557 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETCLIENTID
],
5558 .rpc_argp
= &setclientid
,
5562 struct rpc_task
*task
;
5563 struct rpc_task_setup task_setup_data
= {
5564 .rpc_client
= clp
->cl_rpcclient
,
5565 .rpc_message
= &msg
,
5566 .callback_ops
= &nfs4_setclientid_ops
,
5567 .callback_data
= &setclientid
,
5568 .flags
= RPC_TASK_TIMEOUT
,
5572 /* nfs_client_id4 */
5573 nfs4_init_boot_verifier(clp
, &sc_verifier
);
5575 if (test_bit(NFS_CS_MIGRATION
, &clp
->cl_flags
))
5576 status
= nfs4_init_uniform_client_string(clp
);
5578 status
= nfs4_init_nonuniform_client_string(clp
);
5584 setclientid
.sc_netid_len
=
5585 nfs4_init_callback_netid(clp
,
5586 setclientid
.sc_netid
,
5587 sizeof(setclientid
.sc_netid
));
5588 setclientid
.sc_uaddr_len
= scnprintf(setclientid
.sc_uaddr
,
5589 sizeof(setclientid
.sc_uaddr
), "%s.%u.%u",
5590 clp
->cl_ipaddr
, port
>> 8, port
& 255);
5592 dprintk("NFS call setclientid auth=%s, '%s'\n",
5593 clp
->cl_rpcclient
->cl_auth
->au_ops
->au_name
,
5595 task
= rpc_run_task(&task_setup_data
);
5597 status
= PTR_ERR(task
);
5600 status
= task
->tk_status
;
5601 if (setclientid
.sc_cred
) {
5602 clp
->cl_acceptor
= rpcauth_stringify_acceptor(setclientid
.sc_cred
);
5603 put_rpccred(setclientid
.sc_cred
);
5607 trace_nfs4_setclientid(clp
, status
);
5608 dprintk("NFS reply setclientid: %d\n", status
);
5613 * nfs4_proc_setclientid_confirm - Confirm client ID
5614 * @clp: state data structure
5615 * @res: result of a previous SETCLIENTID
5616 * @cred: RPC credential to use for this call
5618 * Returns zero, a negative errno, or a negative NFS4ERR status code.
5620 int nfs4_proc_setclientid_confirm(struct nfs_client
*clp
,
5621 struct nfs4_setclientid_res
*arg
,
5622 struct rpc_cred
*cred
)
5624 struct rpc_message msg
= {
5625 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETCLIENTID_CONFIRM
],
5631 dprintk("NFS call setclientid_confirm auth=%s, (client ID %llx)\n",
5632 clp
->cl_rpcclient
->cl_auth
->au_ops
->au_name
,
5634 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
5635 trace_nfs4_setclientid_confirm(clp
, status
);
5636 dprintk("NFS reply setclientid_confirm: %d\n", status
);
5640 struct nfs4_delegreturndata
{
5641 struct nfs4_delegreturnargs args
;
5642 struct nfs4_delegreturnres res
;
5644 nfs4_stateid stateid
;
5645 unsigned long timestamp
;
5647 struct nfs4_layoutreturn_args arg
;
5648 struct nfs4_layoutreturn_res res
;
5649 struct nfs4_xdr_opaque_data ld_private
;
5653 struct nfs_fattr fattr
;
5655 struct inode
*inode
;
5658 static void nfs4_delegreturn_done(struct rpc_task
*task
, void *calldata
)
5660 struct nfs4_delegreturndata
*data
= calldata
;
5662 if (!nfs4_sequence_done(task
, &data
->res
.seq_res
))
5665 trace_nfs4_delegreturn_exit(&data
->args
, &data
->res
, task
->tk_status
);
5667 /* Handle Layoutreturn errors */
5668 if (data
->args
.lr_args
&& task
->tk_status
!= 0) {
5669 switch(data
->res
.lr_ret
) {
5671 data
->res
.lr_ret
= -NFS4ERR_NOMATCHING_LAYOUT
;
5674 data
->args
.lr_args
= NULL
;
5675 data
->res
.lr_res
= NULL
;
5677 case -NFS4ERR_ADMIN_REVOKED
:
5678 case -NFS4ERR_DELEG_REVOKED
:
5679 case -NFS4ERR_EXPIRED
:
5680 case -NFS4ERR_BAD_STATEID
:
5681 case -NFS4ERR_OLD_STATEID
:
5682 case -NFS4ERR_UNKNOWN_LAYOUTTYPE
:
5683 case -NFS4ERR_WRONG_CRED
:
5684 data
->args
.lr_args
= NULL
;
5685 data
->res
.lr_res
= NULL
;
5686 data
->res
.lr_ret
= 0;
5687 rpc_restart_call_prepare(task
);
5692 switch (task
->tk_status
) {
5694 renew_lease(data
->res
.server
, data
->timestamp
);
5696 case -NFS4ERR_ADMIN_REVOKED
:
5697 case -NFS4ERR_DELEG_REVOKED
:
5698 case -NFS4ERR_EXPIRED
:
5699 nfs4_free_revoked_stateid(data
->res
.server
,
5701 task
->tk_msg
.rpc_cred
);
5702 case -NFS4ERR_BAD_STATEID
:
5703 case -NFS4ERR_OLD_STATEID
:
5704 case -NFS4ERR_STALE_STATEID
:
5705 task
->tk_status
= 0;
5707 case -NFS4ERR_ACCESS
:
5708 if (data
->args
.bitmask
) {
5709 data
->args
.bitmask
= NULL
;
5710 data
->res
.fattr
= NULL
;
5711 task
->tk_status
= 0;
5712 rpc_restart_call_prepare(task
);
5716 if (nfs4_async_handle_error(task
, data
->res
.server
,
5717 NULL
, NULL
) == -EAGAIN
) {
5718 rpc_restart_call_prepare(task
);
5722 data
->rpc_status
= task
->tk_status
;
5725 static void nfs4_delegreturn_release(void *calldata
)
5727 struct nfs4_delegreturndata
*data
= calldata
;
5728 struct inode
*inode
= data
->inode
;
5732 pnfs_roc_release(&data
->lr
.arg
, &data
->lr
.res
,
5734 nfs_post_op_update_inode_force_wcc(inode
, &data
->fattr
);
5735 nfs_iput_and_deactive(inode
);
5740 static void nfs4_delegreturn_prepare(struct rpc_task
*task
, void *data
)
5742 struct nfs4_delegreturndata
*d_data
;
5744 d_data
= (struct nfs4_delegreturndata
*)data
;
5746 if (!d_data
->lr
.roc
&& nfs4_wait_on_layoutreturn(d_data
->inode
, task
))
5749 nfs4_setup_sequence(d_data
->res
.server
,
5750 &d_data
->args
.seq_args
,
5751 &d_data
->res
.seq_res
,
5755 static const struct rpc_call_ops nfs4_delegreturn_ops
= {
5756 .rpc_call_prepare
= nfs4_delegreturn_prepare
,
5757 .rpc_call_done
= nfs4_delegreturn_done
,
5758 .rpc_release
= nfs4_delegreturn_release
,
5761 static int _nfs4_proc_delegreturn(struct inode
*inode
, struct rpc_cred
*cred
, const nfs4_stateid
*stateid
, int issync
)
5763 struct nfs4_delegreturndata
*data
;
5764 struct nfs_server
*server
= NFS_SERVER(inode
);
5765 struct rpc_task
*task
;
5766 struct rpc_message msg
= {
5767 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_DELEGRETURN
],
5770 struct rpc_task_setup task_setup_data
= {
5771 .rpc_client
= server
->client
,
5772 .rpc_message
= &msg
,
5773 .callback_ops
= &nfs4_delegreturn_ops
,
5774 .flags
= RPC_TASK_ASYNC
,
5778 data
= kzalloc(sizeof(*data
), GFP_NOFS
);
5781 nfs4_init_sequence(&data
->args
.seq_args
, &data
->res
.seq_res
, 1);
5783 nfs4_state_protect(server
->nfs_client
,
5784 NFS_SP4_MACH_CRED_CLEANUP
,
5785 &task_setup_data
.rpc_client
, &msg
);
5787 data
->args
.fhandle
= &data
->fh
;
5788 data
->args
.stateid
= &data
->stateid
;
5789 data
->args
.bitmask
= server
->cache_consistency_bitmask
;
5790 nfs_copy_fh(&data
->fh
, NFS_FH(inode
));
5791 nfs4_stateid_copy(&data
->stateid
, stateid
);
5792 data
->res
.fattr
= &data
->fattr
;
5793 data
->res
.server
= server
;
5794 data
->res
.lr_ret
= -NFS4ERR_NOMATCHING_LAYOUT
;
5795 data
->lr
.arg
.ld_private
= &data
->lr
.ld_private
;
5796 nfs_fattr_init(data
->res
.fattr
);
5797 data
->timestamp
= jiffies
;
5798 data
->rpc_status
= 0;
5799 data
->lr
.roc
= pnfs_roc(inode
, &data
->lr
.arg
, &data
->lr
.res
, cred
);
5800 data
->inode
= nfs_igrab_and_active(inode
);
5803 data
->args
.lr_args
= &data
->lr
.arg
;
5804 data
->res
.lr_res
= &data
->lr
.res
;
5806 } else if (data
->lr
.roc
) {
5807 pnfs_roc_release(&data
->lr
.arg
, &data
->lr
.res
, 0);
5808 data
->lr
.roc
= false;
5811 task_setup_data
.callback_data
= data
;
5812 msg
.rpc_argp
= &data
->args
;
5813 msg
.rpc_resp
= &data
->res
;
5814 task
= rpc_run_task(&task_setup_data
);
5816 return PTR_ERR(task
);
5819 status
= nfs4_wait_for_completion_rpc_task(task
);
5822 status
= data
->rpc_status
;
5828 int nfs4_proc_delegreturn(struct inode
*inode
, struct rpc_cred
*cred
, const nfs4_stateid
*stateid
, int issync
)
5830 struct nfs_server
*server
= NFS_SERVER(inode
);
5831 struct nfs4_exception exception
= { };
5834 err
= _nfs4_proc_delegreturn(inode
, cred
, stateid
, issync
);
5835 trace_nfs4_delegreturn(inode
, stateid
, err
);
5837 case -NFS4ERR_STALE_STATEID
:
5838 case -NFS4ERR_EXPIRED
:
5842 err
= nfs4_handle_exception(server
, err
, &exception
);
5843 } while (exception
.retry
);
5847 static int _nfs4_proc_getlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
5849 struct inode
*inode
= state
->inode
;
5850 struct nfs_server
*server
= NFS_SERVER(inode
);
5851 struct nfs_client
*clp
= server
->nfs_client
;
5852 struct nfs_lockt_args arg
= {
5853 .fh
= NFS_FH(inode
),
5856 struct nfs_lockt_res res
= {
5859 struct rpc_message msg
= {
5860 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOCKT
],
5863 .rpc_cred
= state
->owner
->so_cred
,
5865 struct nfs4_lock_state
*lsp
;
5868 arg
.lock_owner
.clientid
= clp
->cl_clientid
;
5869 status
= nfs4_set_lock_state(state
, request
);
5872 lsp
= request
->fl_u
.nfs4_fl
.owner
;
5873 arg
.lock_owner
.id
= lsp
->ls_seqid
.owner_id
;
5874 arg
.lock_owner
.s_dev
= server
->s_dev
;
5875 status
= nfs4_call_sync(server
->client
, server
, &msg
, &arg
.seq_args
, &res
.seq_res
, 1);
5878 request
->fl_type
= F_UNLCK
;
5880 case -NFS4ERR_DENIED
:
5883 request
->fl_ops
->fl_release_private(request
);
5884 request
->fl_ops
= NULL
;
5889 static int nfs4_proc_getlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
5891 struct nfs4_exception exception
= { };
5895 err
= _nfs4_proc_getlk(state
, cmd
, request
);
5896 trace_nfs4_get_lock(request
, state
, cmd
, err
);
5897 err
= nfs4_handle_exception(NFS_SERVER(state
->inode
), err
,
5899 } while (exception
.retry
);
5903 struct nfs4_unlockdata
{
5904 struct nfs_locku_args arg
;
5905 struct nfs_locku_res res
;
5906 struct nfs4_lock_state
*lsp
;
5907 struct nfs_open_context
*ctx
;
5908 struct file_lock fl
;
5909 struct nfs_server
*server
;
5910 unsigned long timestamp
;
5913 static struct nfs4_unlockdata
*nfs4_alloc_unlockdata(struct file_lock
*fl
,
5914 struct nfs_open_context
*ctx
,
5915 struct nfs4_lock_state
*lsp
,
5916 struct nfs_seqid
*seqid
)
5918 struct nfs4_unlockdata
*p
;
5919 struct inode
*inode
= lsp
->ls_state
->inode
;
5921 p
= kzalloc(sizeof(*p
), GFP_NOFS
);
5924 p
->arg
.fh
= NFS_FH(inode
);
5926 p
->arg
.seqid
= seqid
;
5927 p
->res
.seqid
= seqid
;
5929 atomic_inc(&lsp
->ls_count
);
5930 /* Ensure we don't close file until we're done freeing locks! */
5931 p
->ctx
= get_nfs_open_context(ctx
);
5932 memcpy(&p
->fl
, fl
, sizeof(p
->fl
));
5933 p
->server
= NFS_SERVER(inode
);
5937 static void nfs4_locku_release_calldata(void *data
)
5939 struct nfs4_unlockdata
*calldata
= data
;
5940 nfs_free_seqid(calldata
->arg
.seqid
);
5941 nfs4_put_lock_state(calldata
->lsp
);
5942 put_nfs_open_context(calldata
->ctx
);
5946 static void nfs4_locku_done(struct rpc_task
*task
, void *data
)
5948 struct nfs4_unlockdata
*calldata
= data
;
5950 if (!nfs4_sequence_done(task
, &calldata
->res
.seq_res
))
5952 switch (task
->tk_status
) {
5954 renew_lease(calldata
->server
, calldata
->timestamp
);
5955 locks_lock_inode_wait(calldata
->lsp
->ls_state
->inode
, &calldata
->fl
);
5956 if (nfs4_update_lock_stateid(calldata
->lsp
,
5957 &calldata
->res
.stateid
))
5959 case -NFS4ERR_ADMIN_REVOKED
:
5960 case -NFS4ERR_EXPIRED
:
5961 nfs4_free_revoked_stateid(calldata
->server
,
5962 &calldata
->arg
.stateid
,
5963 task
->tk_msg
.rpc_cred
);
5964 case -NFS4ERR_BAD_STATEID
:
5965 case -NFS4ERR_OLD_STATEID
:
5966 case -NFS4ERR_STALE_STATEID
:
5967 if (!nfs4_stateid_match(&calldata
->arg
.stateid
,
5968 &calldata
->lsp
->ls_stateid
))
5969 rpc_restart_call_prepare(task
);
5972 if (nfs4_async_handle_error(task
, calldata
->server
,
5973 NULL
, NULL
) == -EAGAIN
)
5974 rpc_restart_call_prepare(task
);
5976 nfs_release_seqid(calldata
->arg
.seqid
);
5979 static void nfs4_locku_prepare(struct rpc_task
*task
, void *data
)
5981 struct nfs4_unlockdata
*calldata
= data
;
5983 if (nfs_wait_on_sequence(calldata
->arg
.seqid
, task
) != 0)
5985 nfs4_stateid_copy(&calldata
->arg
.stateid
, &calldata
->lsp
->ls_stateid
);
5986 if (test_bit(NFS_LOCK_INITIALIZED
, &calldata
->lsp
->ls_flags
) == 0) {
5987 /* Note: exit _without_ running nfs4_locku_done */
5990 calldata
->timestamp
= jiffies
;
5991 if (nfs4_setup_sequence(calldata
->server
,
5992 &calldata
->arg
.seq_args
,
5993 &calldata
->res
.seq_res
,
5995 nfs_release_seqid(calldata
->arg
.seqid
);
5998 task
->tk_action
= NULL
;
6000 nfs4_sequence_done(task
, &calldata
->res
.seq_res
);
6003 static const struct rpc_call_ops nfs4_locku_ops
= {
6004 .rpc_call_prepare
= nfs4_locku_prepare
,
6005 .rpc_call_done
= nfs4_locku_done
,
6006 .rpc_release
= nfs4_locku_release_calldata
,
6009 static struct rpc_task
*nfs4_do_unlck(struct file_lock
*fl
,
6010 struct nfs_open_context
*ctx
,
6011 struct nfs4_lock_state
*lsp
,
6012 struct nfs_seqid
*seqid
)
6014 struct nfs4_unlockdata
*data
;
6015 struct rpc_message msg
= {
6016 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOCKU
],
6017 .rpc_cred
= ctx
->cred
,
6019 struct rpc_task_setup task_setup_data
= {
6020 .rpc_client
= NFS_CLIENT(lsp
->ls_state
->inode
),
6021 .rpc_message
= &msg
,
6022 .callback_ops
= &nfs4_locku_ops
,
6023 .workqueue
= nfsiod_workqueue
,
6024 .flags
= RPC_TASK_ASYNC
,
6027 nfs4_state_protect(NFS_SERVER(lsp
->ls_state
->inode
)->nfs_client
,
6028 NFS_SP4_MACH_CRED_CLEANUP
, &task_setup_data
.rpc_client
, &msg
);
6030 /* Ensure this is an unlock - when canceling a lock, the
6031 * canceled lock is passed in, and it won't be an unlock.
6033 fl
->fl_type
= F_UNLCK
;
6035 data
= nfs4_alloc_unlockdata(fl
, ctx
, lsp
, seqid
);
6037 nfs_free_seqid(seqid
);
6038 return ERR_PTR(-ENOMEM
);
6041 nfs4_init_sequence(&data
->arg
.seq_args
, &data
->res
.seq_res
, 1);
6042 msg
.rpc_argp
= &data
->arg
;
6043 msg
.rpc_resp
= &data
->res
;
6044 task_setup_data
.callback_data
= data
;
6045 return rpc_run_task(&task_setup_data
);
6048 static int nfs4_proc_unlck(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
6050 struct inode
*inode
= state
->inode
;
6051 struct nfs4_state_owner
*sp
= state
->owner
;
6052 struct nfs_inode
*nfsi
= NFS_I(inode
);
6053 struct nfs_seqid
*seqid
;
6054 struct nfs4_lock_state
*lsp
;
6055 struct rpc_task
*task
;
6056 struct nfs_seqid
*(*alloc_seqid
)(struct nfs_seqid_counter
*, gfp_t
);
6058 unsigned char fl_flags
= request
->fl_flags
;
6060 status
= nfs4_set_lock_state(state
, request
);
6061 /* Unlock _before_ we do the RPC call */
6062 request
->fl_flags
|= FL_EXISTS
;
6063 /* Exclude nfs_delegation_claim_locks() */
6064 mutex_lock(&sp
->so_delegreturn_mutex
);
6065 /* Exclude nfs4_reclaim_open_stateid() - note nesting! */
6066 down_read(&nfsi
->rwsem
);
6067 if (locks_lock_inode_wait(inode
, request
) == -ENOENT
) {
6068 up_read(&nfsi
->rwsem
);
6069 mutex_unlock(&sp
->so_delegreturn_mutex
);
6072 up_read(&nfsi
->rwsem
);
6073 mutex_unlock(&sp
->so_delegreturn_mutex
);
6076 /* Is this a delegated lock? */
6077 lsp
= request
->fl_u
.nfs4_fl
.owner
;
6078 if (test_bit(NFS_LOCK_INITIALIZED
, &lsp
->ls_flags
) == 0)
6080 alloc_seqid
= NFS_SERVER(inode
)->nfs_client
->cl_mvops
->alloc_seqid
;
6081 seqid
= alloc_seqid(&lsp
->ls_seqid
, GFP_KERNEL
);
6085 task
= nfs4_do_unlck(request
, nfs_file_open_context(request
->fl_file
), lsp
, seqid
);
6086 status
= PTR_ERR(task
);
6089 status
= nfs4_wait_for_completion_rpc_task(task
);
6092 request
->fl_flags
= fl_flags
;
6093 trace_nfs4_unlock(request
, state
, F_SETLK
, status
);
6097 struct nfs4_lockdata
{
6098 struct nfs_lock_args arg
;
6099 struct nfs_lock_res res
;
6100 struct nfs4_lock_state
*lsp
;
6101 struct nfs_open_context
*ctx
;
6102 struct file_lock fl
;
6103 unsigned long timestamp
;
6106 struct nfs_server
*server
;
6109 static struct nfs4_lockdata
*nfs4_alloc_lockdata(struct file_lock
*fl
,
6110 struct nfs_open_context
*ctx
, struct nfs4_lock_state
*lsp
,
6113 struct nfs4_lockdata
*p
;
6114 struct inode
*inode
= lsp
->ls_state
->inode
;
6115 struct nfs_server
*server
= NFS_SERVER(inode
);
6116 struct nfs_seqid
*(*alloc_seqid
)(struct nfs_seqid_counter
*, gfp_t
);
6118 p
= kzalloc(sizeof(*p
), gfp_mask
);
6122 p
->arg
.fh
= NFS_FH(inode
);
6124 p
->arg
.open_seqid
= nfs_alloc_seqid(&lsp
->ls_state
->owner
->so_seqid
, gfp_mask
);
6125 if (IS_ERR(p
->arg
.open_seqid
))
6127 alloc_seqid
= server
->nfs_client
->cl_mvops
->alloc_seqid
;
6128 p
->arg
.lock_seqid
= alloc_seqid(&lsp
->ls_seqid
, gfp_mask
);
6129 if (IS_ERR(p
->arg
.lock_seqid
))
6130 goto out_free_seqid
;
6131 p
->arg
.lock_owner
.clientid
= server
->nfs_client
->cl_clientid
;
6132 p
->arg
.lock_owner
.id
= lsp
->ls_seqid
.owner_id
;
6133 p
->arg
.lock_owner
.s_dev
= server
->s_dev
;
6134 p
->res
.lock_seqid
= p
->arg
.lock_seqid
;
6137 atomic_inc(&lsp
->ls_count
);
6138 p
->ctx
= get_nfs_open_context(ctx
);
6139 memcpy(&p
->fl
, fl
, sizeof(p
->fl
));
6142 nfs_free_seqid(p
->arg
.open_seqid
);
6148 static void nfs4_lock_prepare(struct rpc_task
*task
, void *calldata
)
6150 struct nfs4_lockdata
*data
= calldata
;
6151 struct nfs4_state
*state
= data
->lsp
->ls_state
;
6153 dprintk("%s: begin!\n", __func__
);
6154 if (nfs_wait_on_sequence(data
->arg
.lock_seqid
, task
) != 0)
6156 /* Do we need to do an open_to_lock_owner? */
6157 if (!test_bit(NFS_LOCK_INITIALIZED
, &data
->lsp
->ls_flags
)) {
6158 if (nfs_wait_on_sequence(data
->arg
.open_seqid
, task
) != 0) {
6159 goto out_release_lock_seqid
;
6161 nfs4_stateid_copy(&data
->arg
.open_stateid
,
6162 &state
->open_stateid
);
6163 data
->arg
.new_lock_owner
= 1;
6164 data
->res
.open_seqid
= data
->arg
.open_seqid
;
6166 data
->arg
.new_lock_owner
= 0;
6167 nfs4_stateid_copy(&data
->arg
.lock_stateid
,
6168 &data
->lsp
->ls_stateid
);
6170 if (!nfs4_valid_open_stateid(state
)) {
6171 data
->rpc_status
= -EBADF
;
6172 task
->tk_action
= NULL
;
6173 goto out_release_open_seqid
;
6175 data
->timestamp
= jiffies
;
6176 if (nfs4_setup_sequence(data
->server
,
6177 &data
->arg
.seq_args
,
6181 out_release_open_seqid
:
6182 nfs_release_seqid(data
->arg
.open_seqid
);
6183 out_release_lock_seqid
:
6184 nfs_release_seqid(data
->arg
.lock_seqid
);
6186 nfs4_sequence_done(task
, &data
->res
.seq_res
);
6187 dprintk("%s: done!, ret = %d\n", __func__
, data
->rpc_status
);
6190 static void nfs4_lock_done(struct rpc_task
*task
, void *calldata
)
6192 struct nfs4_lockdata
*data
= calldata
;
6193 struct nfs4_lock_state
*lsp
= data
->lsp
;
6195 dprintk("%s: begin!\n", __func__
);
6197 if (!nfs4_sequence_done(task
, &data
->res
.seq_res
))
6200 data
->rpc_status
= task
->tk_status
;
6201 switch (task
->tk_status
) {
6203 renew_lease(NFS_SERVER(d_inode(data
->ctx
->dentry
)),
6205 if (data
->arg
.new_lock
) {
6206 data
->fl
.fl_flags
&= ~(FL_SLEEP
| FL_ACCESS
);
6207 if (locks_lock_inode_wait(lsp
->ls_state
->inode
, &data
->fl
) < 0) {
6208 rpc_restart_call_prepare(task
);
6212 if (data
->arg
.new_lock_owner
!= 0) {
6213 nfs_confirm_seqid(&lsp
->ls_seqid
, 0);
6214 nfs4_stateid_copy(&lsp
->ls_stateid
, &data
->res
.stateid
);
6215 set_bit(NFS_LOCK_INITIALIZED
, &lsp
->ls_flags
);
6216 } else if (!nfs4_update_lock_stateid(lsp
, &data
->res
.stateid
))
6217 rpc_restart_call_prepare(task
);
6219 case -NFS4ERR_BAD_STATEID
:
6220 case -NFS4ERR_OLD_STATEID
:
6221 case -NFS4ERR_STALE_STATEID
:
6222 case -NFS4ERR_EXPIRED
:
6223 if (data
->arg
.new_lock_owner
!= 0) {
6224 if (!nfs4_stateid_match(&data
->arg
.open_stateid
,
6225 &lsp
->ls_state
->open_stateid
))
6226 rpc_restart_call_prepare(task
);
6227 } else if (!nfs4_stateid_match(&data
->arg
.lock_stateid
,
6229 rpc_restart_call_prepare(task
);
6231 dprintk("%s: done, ret = %d!\n", __func__
, data
->rpc_status
);
6234 static void nfs4_lock_release(void *calldata
)
6236 struct nfs4_lockdata
*data
= calldata
;
6238 dprintk("%s: begin!\n", __func__
);
6239 nfs_free_seqid(data
->arg
.open_seqid
);
6240 if (data
->cancelled
!= 0) {
6241 struct rpc_task
*task
;
6242 task
= nfs4_do_unlck(&data
->fl
, data
->ctx
, data
->lsp
,
6243 data
->arg
.lock_seqid
);
6245 rpc_put_task_async(task
);
6246 dprintk("%s: cancelling lock!\n", __func__
);
6248 nfs_free_seqid(data
->arg
.lock_seqid
);
6249 nfs4_put_lock_state(data
->lsp
);
6250 put_nfs_open_context(data
->ctx
);
6252 dprintk("%s: done!\n", __func__
);
6255 static const struct rpc_call_ops nfs4_lock_ops
= {
6256 .rpc_call_prepare
= nfs4_lock_prepare
,
6257 .rpc_call_done
= nfs4_lock_done
,
6258 .rpc_release
= nfs4_lock_release
,
6261 static void nfs4_handle_setlk_error(struct nfs_server
*server
, struct nfs4_lock_state
*lsp
, int new_lock_owner
, int error
)
6264 case -NFS4ERR_ADMIN_REVOKED
:
6265 case -NFS4ERR_EXPIRED
:
6266 case -NFS4ERR_BAD_STATEID
:
6267 lsp
->ls_seqid
.flags
&= ~NFS_SEQID_CONFIRMED
;
6268 if (new_lock_owner
!= 0 ||
6269 test_bit(NFS_LOCK_INITIALIZED
, &lsp
->ls_flags
) != 0)
6270 nfs4_schedule_stateid_recovery(server
, lsp
->ls_state
);
6272 case -NFS4ERR_STALE_STATEID
:
6273 lsp
->ls_seqid
.flags
&= ~NFS_SEQID_CONFIRMED
;
6274 nfs4_schedule_lease_recovery(server
->nfs_client
);
6278 static int _nfs4_do_setlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*fl
, int recovery_type
)
6280 struct nfs4_lockdata
*data
;
6281 struct rpc_task
*task
;
6282 struct rpc_message msg
= {
6283 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOCK
],
6284 .rpc_cred
= state
->owner
->so_cred
,
6286 struct rpc_task_setup task_setup_data
= {
6287 .rpc_client
= NFS_CLIENT(state
->inode
),
6288 .rpc_message
= &msg
,
6289 .callback_ops
= &nfs4_lock_ops
,
6290 .workqueue
= nfsiod_workqueue
,
6291 .flags
= RPC_TASK_ASYNC
,
6295 dprintk("%s: begin!\n", __func__
);
6296 data
= nfs4_alloc_lockdata(fl
, nfs_file_open_context(fl
->fl_file
),
6297 fl
->fl_u
.nfs4_fl
.owner
,
6298 recovery_type
== NFS_LOCK_NEW
? GFP_KERNEL
: GFP_NOFS
);
6302 data
->arg
.block
= 1;
6303 nfs4_init_sequence(&data
->arg
.seq_args
, &data
->res
.seq_res
, 1);
6304 msg
.rpc_argp
= &data
->arg
;
6305 msg
.rpc_resp
= &data
->res
;
6306 task_setup_data
.callback_data
= data
;
6307 if (recovery_type
> NFS_LOCK_NEW
) {
6308 if (recovery_type
== NFS_LOCK_RECLAIM
)
6309 data
->arg
.reclaim
= NFS_LOCK_RECLAIM
;
6310 nfs4_set_sequence_privileged(&data
->arg
.seq_args
);
6312 data
->arg
.new_lock
= 1;
6313 task
= rpc_run_task(&task_setup_data
);
6315 return PTR_ERR(task
);
6316 ret
= nfs4_wait_for_completion_rpc_task(task
);
6318 ret
= data
->rpc_status
;
6320 nfs4_handle_setlk_error(data
->server
, data
->lsp
,
6321 data
->arg
.new_lock_owner
, ret
);
6323 data
->cancelled
= 1;
6325 dprintk("%s: done, ret = %d!\n", __func__
, ret
);
6326 trace_nfs4_set_lock(fl
, state
, &data
->res
.stateid
, cmd
, ret
);
6330 static int nfs4_lock_reclaim(struct nfs4_state
*state
, struct file_lock
*request
)
6332 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
6333 struct nfs4_exception exception
= {
6334 .inode
= state
->inode
,
6339 /* Cache the lock if possible... */
6340 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) != 0)
6342 err
= _nfs4_do_setlk(state
, F_SETLK
, request
, NFS_LOCK_RECLAIM
);
6343 if (err
!= -NFS4ERR_DELAY
)
6345 nfs4_handle_exception(server
, err
, &exception
);
6346 } while (exception
.retry
);
6350 static int nfs4_lock_expired(struct nfs4_state
*state
, struct file_lock
*request
)
6352 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
6353 struct nfs4_exception exception
= {
6354 .inode
= state
->inode
,
6358 err
= nfs4_set_lock_state(state
, request
);
6361 if (!recover_lost_locks
) {
6362 set_bit(NFS_LOCK_LOST
, &request
->fl_u
.nfs4_fl
.owner
->ls_flags
);
6366 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) != 0)
6368 err
= _nfs4_do_setlk(state
, F_SETLK
, request
, NFS_LOCK_EXPIRED
);
6372 case -NFS4ERR_GRACE
:
6373 case -NFS4ERR_DELAY
:
6374 nfs4_handle_exception(server
, err
, &exception
);
6377 } while (exception
.retry
);
6382 #if defined(CONFIG_NFS_V4_1)
6383 static int nfs41_lock_expired(struct nfs4_state
*state
, struct file_lock
*request
)
6385 struct nfs4_lock_state
*lsp
;
6388 status
= nfs4_set_lock_state(state
, request
);
6391 lsp
= request
->fl_u
.nfs4_fl
.owner
;
6392 if (test_bit(NFS_LOCK_INITIALIZED
, &lsp
->ls_flags
) ||
6393 test_bit(NFS_LOCK_LOST
, &lsp
->ls_flags
))
6395 status
= nfs4_lock_expired(state
, request
);
6400 static int _nfs4_proc_setlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
6402 struct nfs_inode
*nfsi
= NFS_I(state
->inode
);
6403 struct nfs4_state_owner
*sp
= state
->owner
;
6404 unsigned char fl_flags
= request
->fl_flags
;
6407 request
->fl_flags
|= FL_ACCESS
;
6408 status
= locks_lock_inode_wait(state
->inode
, request
);
6411 mutex_lock(&sp
->so_delegreturn_mutex
);
6412 down_read(&nfsi
->rwsem
);
6413 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
)) {
6414 /* Yes: cache locks! */
6415 /* ...but avoid races with delegation recall... */
6416 request
->fl_flags
= fl_flags
& ~FL_SLEEP
;
6417 status
= locks_lock_inode_wait(state
->inode
, request
);
6418 up_read(&nfsi
->rwsem
);
6419 mutex_unlock(&sp
->so_delegreturn_mutex
);
6422 up_read(&nfsi
->rwsem
);
6423 mutex_unlock(&sp
->so_delegreturn_mutex
);
6424 status
= _nfs4_do_setlk(state
, cmd
, request
, NFS_LOCK_NEW
);
6426 request
->fl_flags
= fl_flags
;
6430 static int nfs4_proc_setlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
6432 struct nfs4_exception exception
= {
6434 .inode
= state
->inode
,
6439 err
= _nfs4_proc_setlk(state
, cmd
, request
);
6440 if (err
== -NFS4ERR_DENIED
)
6442 err
= nfs4_handle_exception(NFS_SERVER(state
->inode
),
6444 } while (exception
.retry
);
6448 #define NFS4_LOCK_MINTIMEOUT (1 * HZ)
6449 #define NFS4_LOCK_MAXTIMEOUT (30 * HZ)
6452 nfs4_retry_setlk_simple(struct nfs4_state
*state
, int cmd
,
6453 struct file_lock
*request
)
6455 int status
= -ERESTARTSYS
;
6456 unsigned long timeout
= NFS4_LOCK_MINTIMEOUT
;
6458 while(!signalled()) {
6459 status
= nfs4_proc_setlk(state
, cmd
, request
);
6460 if ((status
!= -EAGAIN
) || IS_SETLK(cmd
))
6462 freezable_schedule_timeout_interruptible(timeout
);
6464 timeout
= min_t(unsigned long, NFS4_LOCK_MAXTIMEOUT
, timeout
);
6465 status
= -ERESTARTSYS
;
6470 #ifdef CONFIG_NFS_V4_1
6471 struct nfs4_lock_waiter
{
6472 struct task_struct
*task
;
6473 struct inode
*inode
;
6474 struct nfs_lowner
*owner
;
6479 nfs4_wake_lock_waiter(wait_queue_t
*wait
, unsigned int mode
, int flags
, void *key
)
6482 struct cb_notify_lock_args
*cbnl
= key
;
6483 struct nfs4_lock_waiter
*waiter
= wait
->private;
6484 struct nfs_lowner
*lowner
= &cbnl
->cbnl_owner
,
6485 *wowner
= waiter
->owner
;
6487 /* Only wake if the callback was for the same owner */
6488 if (lowner
->clientid
!= wowner
->clientid
||
6489 lowner
->id
!= wowner
->id
||
6490 lowner
->s_dev
!= wowner
->s_dev
)
6493 /* Make sure it's for the right inode */
6494 if (nfs_compare_fh(NFS_FH(waiter
->inode
), &cbnl
->cbnl_fh
))
6497 waiter
->notified
= true;
6499 /* override "private" so we can use default_wake_function */
6500 wait
->private = waiter
->task
;
6501 ret
= autoremove_wake_function(wait
, mode
, flags
, key
);
6502 wait
->private = waiter
;
6507 nfs4_retry_setlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
6509 int status
= -ERESTARTSYS
;
6510 unsigned long flags
;
6511 struct nfs4_lock_state
*lsp
= request
->fl_u
.nfs4_fl
.owner
;
6512 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
6513 struct nfs_client
*clp
= server
->nfs_client
;
6514 wait_queue_head_t
*q
= &clp
->cl_lock_waitq
;
6515 struct nfs_lowner owner
= { .clientid
= clp
->cl_clientid
,
6516 .id
= lsp
->ls_seqid
.owner_id
,
6517 .s_dev
= server
->s_dev
};
6518 struct nfs4_lock_waiter waiter
= { .task
= current
,
6519 .inode
= state
->inode
,
6521 .notified
= false };
6524 /* Don't bother with waitqueue if we don't expect a callback */
6525 if (!test_bit(NFS_STATE_MAY_NOTIFY_LOCK
, &state
->flags
))
6526 return nfs4_retry_setlk_simple(state
, cmd
, request
);
6529 wait
.private = &waiter
;
6530 wait
.func
= nfs4_wake_lock_waiter
;
6531 add_wait_queue(q
, &wait
);
6533 while(!signalled()) {
6534 status
= nfs4_proc_setlk(state
, cmd
, request
);
6535 if ((status
!= -EAGAIN
) || IS_SETLK(cmd
))
6538 status
= -ERESTARTSYS
;
6539 spin_lock_irqsave(&q
->lock
, flags
);
6540 if (waiter
.notified
) {
6541 spin_unlock_irqrestore(&q
->lock
, flags
);
6544 set_current_state(TASK_INTERRUPTIBLE
);
6545 spin_unlock_irqrestore(&q
->lock
, flags
);
6547 freezable_schedule_timeout_interruptible(NFS4_LOCK_MAXTIMEOUT
);
6550 finish_wait(q
, &wait
);
6553 #else /* !CONFIG_NFS_V4_1 */
6555 nfs4_retry_setlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
6557 return nfs4_retry_setlk_simple(state
, cmd
, request
);
6562 nfs4_proc_lock(struct file
*filp
, int cmd
, struct file_lock
*request
)
6564 struct nfs_open_context
*ctx
;
6565 struct nfs4_state
*state
;
6568 /* verify open state */
6569 ctx
= nfs_file_open_context(filp
);
6572 if (request
->fl_start
< 0 || request
->fl_end
< 0)
6575 if (IS_GETLK(cmd
)) {
6577 return nfs4_proc_getlk(state
, F_GETLK
, request
);
6581 if (!(IS_SETLK(cmd
) || IS_SETLKW(cmd
)))
6584 if (request
->fl_type
== F_UNLCK
) {
6586 return nfs4_proc_unlck(state
, cmd
, request
);
6593 if ((request
->fl_flags
& FL_POSIX
) &&
6594 !test_bit(NFS_STATE_POSIX_LOCKS
, &state
->flags
))
6598 * Don't rely on the VFS having checked the file open mode,
6599 * since it won't do this for flock() locks.
6601 switch (request
->fl_type
) {
6603 if (!(filp
->f_mode
& FMODE_READ
))
6607 if (!(filp
->f_mode
& FMODE_WRITE
))
6611 status
= nfs4_set_lock_state(state
, request
);
6615 return nfs4_retry_setlk(state
, cmd
, request
);
6618 int nfs4_lock_delegation_recall(struct file_lock
*fl
, struct nfs4_state
*state
, const nfs4_stateid
*stateid
)
6620 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
6623 err
= nfs4_set_lock_state(state
, fl
);
6626 err
= _nfs4_do_setlk(state
, F_SETLK
, fl
, NFS_LOCK_NEW
);
6627 return nfs4_handle_delegation_recall_error(server
, state
, stateid
, err
);
6630 struct nfs_release_lockowner_data
{
6631 struct nfs4_lock_state
*lsp
;
6632 struct nfs_server
*server
;
6633 struct nfs_release_lockowner_args args
;
6634 struct nfs_release_lockowner_res res
;
6635 unsigned long timestamp
;
6638 static void nfs4_release_lockowner_prepare(struct rpc_task
*task
, void *calldata
)
6640 struct nfs_release_lockowner_data
*data
= calldata
;
6641 struct nfs_server
*server
= data
->server
;
6642 nfs40_setup_sequence(server
->nfs_client
->cl_slot_tbl
,
6643 &data
->args
.seq_args
, &data
->res
.seq_res
, task
);
6644 data
->args
.lock_owner
.clientid
= server
->nfs_client
->cl_clientid
;
6645 data
->timestamp
= jiffies
;
6648 static void nfs4_release_lockowner_done(struct rpc_task
*task
, void *calldata
)
6650 struct nfs_release_lockowner_data
*data
= calldata
;
6651 struct nfs_server
*server
= data
->server
;
6653 nfs40_sequence_done(task
, &data
->res
.seq_res
);
6655 switch (task
->tk_status
) {
6657 renew_lease(server
, data
->timestamp
);
6659 case -NFS4ERR_STALE_CLIENTID
:
6660 case -NFS4ERR_EXPIRED
:
6661 nfs4_schedule_lease_recovery(server
->nfs_client
);
6663 case -NFS4ERR_LEASE_MOVED
:
6664 case -NFS4ERR_DELAY
:
6665 if (nfs4_async_handle_error(task
, server
,
6666 NULL
, NULL
) == -EAGAIN
)
6667 rpc_restart_call_prepare(task
);
6671 static void nfs4_release_lockowner_release(void *calldata
)
6673 struct nfs_release_lockowner_data
*data
= calldata
;
6674 nfs4_free_lock_state(data
->server
, data
->lsp
);
6678 static const struct rpc_call_ops nfs4_release_lockowner_ops
= {
6679 .rpc_call_prepare
= nfs4_release_lockowner_prepare
,
6680 .rpc_call_done
= nfs4_release_lockowner_done
,
6681 .rpc_release
= nfs4_release_lockowner_release
,
6685 nfs4_release_lockowner(struct nfs_server
*server
, struct nfs4_lock_state
*lsp
)
6687 struct nfs_release_lockowner_data
*data
;
6688 struct rpc_message msg
= {
6689 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RELEASE_LOCKOWNER
],
6692 if (server
->nfs_client
->cl_mvops
->minor_version
!= 0)
6695 data
= kmalloc(sizeof(*data
), GFP_NOFS
);
6699 data
->server
= server
;
6700 data
->args
.lock_owner
.clientid
= server
->nfs_client
->cl_clientid
;
6701 data
->args
.lock_owner
.id
= lsp
->ls_seqid
.owner_id
;
6702 data
->args
.lock_owner
.s_dev
= server
->s_dev
;
6704 msg
.rpc_argp
= &data
->args
;
6705 msg
.rpc_resp
= &data
->res
;
6706 nfs4_init_sequence(&data
->args
.seq_args
, &data
->res
.seq_res
, 0);
6707 rpc_call_async(server
->client
, &msg
, 0, &nfs4_release_lockowner_ops
, data
);
6710 #define XATTR_NAME_NFSV4_ACL "system.nfs4_acl"
6712 static int nfs4_xattr_set_nfs4_acl(const struct xattr_handler
*handler
,
6713 struct dentry
*unused
, struct inode
*inode
,
6714 const char *key
, const void *buf
,
6715 size_t buflen
, int flags
)
6717 return nfs4_proc_set_acl(inode
, buf
, buflen
);
6720 static int nfs4_xattr_get_nfs4_acl(const struct xattr_handler
*handler
,
6721 struct dentry
*unused
, struct inode
*inode
,
6722 const char *key
, void *buf
, size_t buflen
)
6724 return nfs4_proc_get_acl(inode
, buf
, buflen
);
6727 static bool nfs4_xattr_list_nfs4_acl(struct dentry
*dentry
)
6729 return nfs4_server_supports_acls(NFS_SERVER(d_inode(dentry
)));
6732 #ifdef CONFIG_NFS_V4_SECURITY_LABEL
6734 static int nfs4_xattr_set_nfs4_label(const struct xattr_handler
*handler
,
6735 struct dentry
*unused
, struct inode
*inode
,
6736 const char *key
, const void *buf
,
6737 size_t buflen
, int flags
)
6739 if (security_ismaclabel(key
))
6740 return nfs4_set_security_label(inode
, buf
, buflen
);
6745 static int nfs4_xattr_get_nfs4_label(const struct xattr_handler
*handler
,
6746 struct dentry
*unused
, struct inode
*inode
,
6747 const char *key
, void *buf
, size_t buflen
)
6749 if (security_ismaclabel(key
))
6750 return nfs4_get_security_label(inode
, buf
, buflen
);
6755 nfs4_listxattr_nfs4_label(struct inode
*inode
, char *list
, size_t list_len
)
6759 if (nfs_server_capable(inode
, NFS_CAP_SECURITY_LABEL
)) {
6760 len
= security_inode_listsecurity(inode
, list
, list_len
);
6761 if (list_len
&& len
> list_len
)
6767 static const struct xattr_handler nfs4_xattr_nfs4_label_handler
= {
6768 .prefix
= XATTR_SECURITY_PREFIX
,
6769 .get
= nfs4_xattr_get_nfs4_label
,
6770 .set
= nfs4_xattr_set_nfs4_label
,
6776 nfs4_listxattr_nfs4_label(struct inode
*inode
, char *list
, size_t list_len
)
6784 * nfs_fhget will use either the mounted_on_fileid or the fileid
6786 static void nfs_fixup_referral_attributes(struct nfs_fattr
*fattr
)
6788 if (!(((fattr
->valid
& NFS_ATTR_FATTR_MOUNTED_ON_FILEID
) ||
6789 (fattr
->valid
& NFS_ATTR_FATTR_FILEID
)) &&
6790 (fattr
->valid
& NFS_ATTR_FATTR_FSID
) &&
6791 (fattr
->valid
& NFS_ATTR_FATTR_V4_LOCATIONS
)))
6794 fattr
->valid
|= NFS_ATTR_FATTR_TYPE
| NFS_ATTR_FATTR_MODE
|
6795 NFS_ATTR_FATTR_NLINK
| NFS_ATTR_FATTR_V4_REFERRAL
;
6796 fattr
->mode
= S_IFDIR
| S_IRUGO
| S_IXUGO
;
6800 static int _nfs4_proc_fs_locations(struct rpc_clnt
*client
, struct inode
*dir
,
6801 const struct qstr
*name
,
6802 struct nfs4_fs_locations
*fs_locations
,
6805 struct nfs_server
*server
= NFS_SERVER(dir
);
6807 [0] = FATTR4_WORD0_FSID
| FATTR4_WORD0_FS_LOCATIONS
,
6809 struct nfs4_fs_locations_arg args
= {
6810 .dir_fh
= NFS_FH(dir
),
6815 struct nfs4_fs_locations_res res
= {
6816 .fs_locations
= fs_locations
,
6818 struct rpc_message msg
= {
6819 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_FS_LOCATIONS
],
6825 dprintk("%s: start\n", __func__
);
6827 /* Ask for the fileid of the absent filesystem if mounted_on_fileid
6828 * is not supported */
6829 if (NFS_SERVER(dir
)->attr_bitmask
[1] & FATTR4_WORD1_MOUNTED_ON_FILEID
)
6830 bitmask
[1] |= FATTR4_WORD1_MOUNTED_ON_FILEID
;
6832 bitmask
[0] |= FATTR4_WORD0_FILEID
;
6834 nfs_fattr_init(&fs_locations
->fattr
);
6835 fs_locations
->server
= server
;
6836 fs_locations
->nlocations
= 0;
6837 status
= nfs4_call_sync(client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
6838 dprintk("%s: returned status = %d\n", __func__
, status
);
6842 int nfs4_proc_fs_locations(struct rpc_clnt
*client
, struct inode
*dir
,
6843 const struct qstr
*name
,
6844 struct nfs4_fs_locations
*fs_locations
,
6847 struct nfs4_exception exception
= { };
6850 err
= _nfs4_proc_fs_locations(client
, dir
, name
,
6851 fs_locations
, page
);
6852 trace_nfs4_get_fs_locations(dir
, name
, err
);
6853 err
= nfs4_handle_exception(NFS_SERVER(dir
), err
,
6855 } while (exception
.retry
);
6860 * This operation also signals the server that this client is
6861 * performing migration recovery. The server can stop returning
6862 * NFS4ERR_LEASE_MOVED to this client. A RENEW operation is
6863 * appended to this compound to identify the client ID which is
6864 * performing recovery.
6866 static int _nfs40_proc_get_locations(struct inode
*inode
,
6867 struct nfs4_fs_locations
*locations
,
6868 struct page
*page
, struct rpc_cred
*cred
)
6870 struct nfs_server
*server
= NFS_SERVER(inode
);
6871 struct rpc_clnt
*clnt
= server
->client
;
6873 [0] = FATTR4_WORD0_FSID
| FATTR4_WORD0_FS_LOCATIONS
,
6875 struct nfs4_fs_locations_arg args
= {
6876 .clientid
= server
->nfs_client
->cl_clientid
,
6877 .fh
= NFS_FH(inode
),
6880 .migration
= 1, /* skip LOOKUP */
6881 .renew
= 1, /* append RENEW */
6883 struct nfs4_fs_locations_res res
= {
6884 .fs_locations
= locations
,
6888 struct rpc_message msg
= {
6889 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_FS_LOCATIONS
],
6894 unsigned long now
= jiffies
;
6897 nfs_fattr_init(&locations
->fattr
);
6898 locations
->server
= server
;
6899 locations
->nlocations
= 0;
6901 nfs4_init_sequence(&args
.seq_args
, &res
.seq_res
, 0);
6902 nfs4_set_sequence_privileged(&args
.seq_args
);
6903 status
= nfs4_call_sync_sequence(clnt
, server
, &msg
,
6904 &args
.seq_args
, &res
.seq_res
);
6908 renew_lease(server
, now
);
6912 #ifdef CONFIG_NFS_V4_1
6915 * This operation also signals the server that this client is
6916 * performing migration recovery. The server can stop asserting
6917 * SEQ4_STATUS_LEASE_MOVED for this client. The client ID
6918 * performing this operation is identified in the SEQUENCE
6919 * operation in this compound.
6921 * When the client supports GETATTR(fs_locations_info), it can
6922 * be plumbed in here.
6924 static int _nfs41_proc_get_locations(struct inode
*inode
,
6925 struct nfs4_fs_locations
*locations
,
6926 struct page
*page
, struct rpc_cred
*cred
)
6928 struct nfs_server
*server
= NFS_SERVER(inode
);
6929 struct rpc_clnt
*clnt
= server
->client
;
6931 [0] = FATTR4_WORD0_FSID
| FATTR4_WORD0_FS_LOCATIONS
,
6933 struct nfs4_fs_locations_arg args
= {
6934 .fh
= NFS_FH(inode
),
6937 .migration
= 1, /* skip LOOKUP */
6939 struct nfs4_fs_locations_res res
= {
6940 .fs_locations
= locations
,
6943 struct rpc_message msg
= {
6944 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_FS_LOCATIONS
],
6951 nfs_fattr_init(&locations
->fattr
);
6952 locations
->server
= server
;
6953 locations
->nlocations
= 0;
6955 nfs4_init_sequence(&args
.seq_args
, &res
.seq_res
, 0);
6956 nfs4_set_sequence_privileged(&args
.seq_args
);
6957 status
= nfs4_call_sync_sequence(clnt
, server
, &msg
,
6958 &args
.seq_args
, &res
.seq_res
);
6959 if (status
== NFS4_OK
&&
6960 res
.seq_res
.sr_status_flags
& SEQ4_STATUS_LEASE_MOVED
)
6961 status
= -NFS4ERR_LEASE_MOVED
;
6965 #endif /* CONFIG_NFS_V4_1 */
6968 * nfs4_proc_get_locations - discover locations for a migrated FSID
6969 * @inode: inode on FSID that is migrating
6970 * @locations: result of query
6972 * @cred: credential to use for this operation
6974 * Returns NFS4_OK on success, a negative NFS4ERR status code if the
6975 * operation failed, or a negative errno if a local error occurred.
6977 * On success, "locations" is filled in, but if the server has
6978 * no locations information, NFS_ATTR_FATTR_V4_LOCATIONS is not
6981 * -NFS4ERR_LEASE_MOVED is returned if the server still has leases
6982 * from this client that require migration recovery.
6984 int nfs4_proc_get_locations(struct inode
*inode
,
6985 struct nfs4_fs_locations
*locations
,
6986 struct page
*page
, struct rpc_cred
*cred
)
6988 struct nfs_server
*server
= NFS_SERVER(inode
);
6989 struct nfs_client
*clp
= server
->nfs_client
;
6990 const struct nfs4_mig_recovery_ops
*ops
=
6991 clp
->cl_mvops
->mig_recovery_ops
;
6992 struct nfs4_exception exception
= { };
6995 dprintk("%s: FSID %llx:%llx on \"%s\"\n", __func__
,
6996 (unsigned long long)server
->fsid
.major
,
6997 (unsigned long long)server
->fsid
.minor
,
6999 nfs_display_fhandle(NFS_FH(inode
), __func__
);
7002 status
= ops
->get_locations(inode
, locations
, page
, cred
);
7003 if (status
!= -NFS4ERR_DELAY
)
7005 nfs4_handle_exception(server
, status
, &exception
);
7006 } while (exception
.retry
);
7011 * This operation also signals the server that this client is
7012 * performing "lease moved" recovery. The server can stop
7013 * returning NFS4ERR_LEASE_MOVED to this client. A RENEW operation
7014 * is appended to this compound to identify the client ID which is
7015 * performing recovery.
7017 static int _nfs40_proc_fsid_present(struct inode
*inode
, struct rpc_cred
*cred
)
7019 struct nfs_server
*server
= NFS_SERVER(inode
);
7020 struct nfs_client
*clp
= NFS_SERVER(inode
)->nfs_client
;
7021 struct rpc_clnt
*clnt
= server
->client
;
7022 struct nfs4_fsid_present_arg args
= {
7023 .fh
= NFS_FH(inode
),
7024 .clientid
= clp
->cl_clientid
,
7025 .renew
= 1, /* append RENEW */
7027 struct nfs4_fsid_present_res res
= {
7030 struct rpc_message msg
= {
7031 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_FSID_PRESENT
],
7036 unsigned long now
= jiffies
;
7039 res
.fh
= nfs_alloc_fhandle();
7043 nfs4_init_sequence(&args
.seq_args
, &res
.seq_res
, 0);
7044 nfs4_set_sequence_privileged(&args
.seq_args
);
7045 status
= nfs4_call_sync_sequence(clnt
, server
, &msg
,
7046 &args
.seq_args
, &res
.seq_res
);
7047 nfs_free_fhandle(res
.fh
);
7051 do_renew_lease(clp
, now
);
7055 #ifdef CONFIG_NFS_V4_1
7058 * This operation also signals the server that this client is
7059 * performing "lease moved" recovery. The server can stop asserting
7060 * SEQ4_STATUS_LEASE_MOVED for this client. The client ID performing
7061 * this operation is identified in the SEQUENCE operation in this
7064 static int _nfs41_proc_fsid_present(struct inode
*inode
, struct rpc_cred
*cred
)
7066 struct nfs_server
*server
= NFS_SERVER(inode
);
7067 struct rpc_clnt
*clnt
= server
->client
;
7068 struct nfs4_fsid_present_arg args
= {
7069 .fh
= NFS_FH(inode
),
7071 struct nfs4_fsid_present_res res
= {
7073 struct rpc_message msg
= {
7074 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_FSID_PRESENT
],
7081 res
.fh
= nfs_alloc_fhandle();
7085 nfs4_init_sequence(&args
.seq_args
, &res
.seq_res
, 0);
7086 nfs4_set_sequence_privileged(&args
.seq_args
);
7087 status
= nfs4_call_sync_sequence(clnt
, server
, &msg
,
7088 &args
.seq_args
, &res
.seq_res
);
7089 nfs_free_fhandle(res
.fh
);
7090 if (status
== NFS4_OK
&&
7091 res
.seq_res
.sr_status_flags
& SEQ4_STATUS_LEASE_MOVED
)
7092 status
= -NFS4ERR_LEASE_MOVED
;
7096 #endif /* CONFIG_NFS_V4_1 */
7099 * nfs4_proc_fsid_present - Is this FSID present or absent on server?
7100 * @inode: inode on FSID to check
7101 * @cred: credential to use for this operation
7103 * Server indicates whether the FSID is present, moved, or not
7104 * recognized. This operation is necessary to clear a LEASE_MOVED
7105 * condition for this client ID.
7107 * Returns NFS4_OK if the FSID is present on this server,
7108 * -NFS4ERR_MOVED if the FSID is no longer present, a negative
7109 * NFS4ERR code if some error occurred on the server, or a
7110 * negative errno if a local failure occurred.
7112 int nfs4_proc_fsid_present(struct inode
*inode
, struct rpc_cred
*cred
)
7114 struct nfs_server
*server
= NFS_SERVER(inode
);
7115 struct nfs_client
*clp
= server
->nfs_client
;
7116 const struct nfs4_mig_recovery_ops
*ops
=
7117 clp
->cl_mvops
->mig_recovery_ops
;
7118 struct nfs4_exception exception
= { };
7121 dprintk("%s: FSID %llx:%llx on \"%s\"\n", __func__
,
7122 (unsigned long long)server
->fsid
.major
,
7123 (unsigned long long)server
->fsid
.minor
,
7125 nfs_display_fhandle(NFS_FH(inode
), __func__
);
7128 status
= ops
->fsid_present(inode
, cred
);
7129 if (status
!= -NFS4ERR_DELAY
)
7131 nfs4_handle_exception(server
, status
, &exception
);
7132 } while (exception
.retry
);
7137 * If 'use_integrity' is true and the state managment nfs_client
7138 * cl_rpcclient is using krb5i/p, use the integrity protected cl_rpcclient
7139 * and the machine credential as per RFC3530bis and RFC5661 Security
7140 * Considerations sections. Otherwise, just use the user cred with the
7141 * filesystem's rpc_client.
7143 static int _nfs4_proc_secinfo(struct inode
*dir
, const struct qstr
*name
, struct nfs4_secinfo_flavors
*flavors
, bool use_integrity
)
7146 struct nfs4_secinfo_arg args
= {
7147 .dir_fh
= NFS_FH(dir
),
7150 struct nfs4_secinfo_res res
= {
7153 struct rpc_message msg
= {
7154 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SECINFO
],
7158 struct rpc_clnt
*clnt
= NFS_SERVER(dir
)->client
;
7159 struct rpc_cred
*cred
= NULL
;
7161 if (use_integrity
) {
7162 clnt
= NFS_SERVER(dir
)->nfs_client
->cl_rpcclient
;
7163 cred
= nfs4_get_clid_cred(NFS_SERVER(dir
)->nfs_client
);
7164 msg
.rpc_cred
= cred
;
7167 dprintk("NFS call secinfo %s\n", name
->name
);
7169 nfs4_state_protect(NFS_SERVER(dir
)->nfs_client
,
7170 NFS_SP4_MACH_CRED_SECINFO
, &clnt
, &msg
);
7172 status
= nfs4_call_sync(clnt
, NFS_SERVER(dir
), &msg
, &args
.seq_args
,
7174 dprintk("NFS reply secinfo: %d\n", status
);
7182 int nfs4_proc_secinfo(struct inode
*dir
, const struct qstr
*name
,
7183 struct nfs4_secinfo_flavors
*flavors
)
7185 struct nfs4_exception exception
= { };
7188 err
= -NFS4ERR_WRONGSEC
;
7190 /* try to use integrity protection with machine cred */
7191 if (_nfs4_is_integrity_protected(NFS_SERVER(dir
)->nfs_client
))
7192 err
= _nfs4_proc_secinfo(dir
, name
, flavors
, true);
7195 * if unable to use integrity protection, or SECINFO with
7196 * integrity protection returns NFS4ERR_WRONGSEC (which is
7197 * disallowed by spec, but exists in deployed servers) use
7198 * the current filesystem's rpc_client and the user cred.
7200 if (err
== -NFS4ERR_WRONGSEC
)
7201 err
= _nfs4_proc_secinfo(dir
, name
, flavors
, false);
7203 trace_nfs4_secinfo(dir
, name
, err
);
7204 err
= nfs4_handle_exception(NFS_SERVER(dir
), err
,
7206 } while (exception
.retry
);
7210 #ifdef CONFIG_NFS_V4_1
7212 * Check the exchange flags returned by the server for invalid flags, having
7213 * both PNFS and NON_PNFS flags set, and not having one of NON_PNFS, PNFS, or
7216 static int nfs4_check_cl_exchange_flags(u32 flags
)
7218 if (flags
& ~EXCHGID4_FLAG_MASK_R
)
7220 if ((flags
& EXCHGID4_FLAG_USE_PNFS_MDS
) &&
7221 (flags
& EXCHGID4_FLAG_USE_NON_PNFS
))
7223 if (!(flags
& (EXCHGID4_FLAG_MASK_PNFS
)))
7227 return -NFS4ERR_INVAL
;
7231 nfs41_same_server_scope(struct nfs41_server_scope
*a
,
7232 struct nfs41_server_scope
*b
)
7234 if (a
->server_scope_sz
== b
->server_scope_sz
&&
7235 memcmp(a
->server_scope
, b
->server_scope
, a
->server_scope_sz
) == 0)
7242 nfs4_bind_one_conn_to_session_done(struct rpc_task
*task
, void *calldata
)
7246 static const struct rpc_call_ops nfs4_bind_one_conn_to_session_ops
= {
7247 .rpc_call_done
= &nfs4_bind_one_conn_to_session_done
,
7251 * nfs4_proc_bind_one_conn_to_session()
7253 * The 4.1 client currently uses the same TCP connection for the
7254 * fore and backchannel.
7257 int nfs4_proc_bind_one_conn_to_session(struct rpc_clnt
*clnt
,
7258 struct rpc_xprt
*xprt
,
7259 struct nfs_client
*clp
,
7260 struct rpc_cred
*cred
)
7263 struct nfs41_bind_conn_to_session_args args
= {
7265 .dir
= NFS4_CDFC4_FORE_OR_BOTH
,
7267 struct nfs41_bind_conn_to_session_res res
;
7268 struct rpc_message msg
= {
7270 &nfs4_procedures
[NFSPROC4_CLNT_BIND_CONN_TO_SESSION
],
7275 struct rpc_task_setup task_setup_data
= {
7278 .callback_ops
= &nfs4_bind_one_conn_to_session_ops
,
7279 .rpc_message
= &msg
,
7280 .flags
= RPC_TASK_TIMEOUT
,
7282 struct rpc_task
*task
;
7284 dprintk("--> %s\n", __func__
);
7286 nfs4_copy_sessionid(&args
.sessionid
, &clp
->cl_session
->sess_id
);
7287 if (!(clp
->cl_session
->flags
& SESSION4_BACK_CHAN
))
7288 args
.dir
= NFS4_CDFC4_FORE
;
7290 /* Do not set the backchannel flag unless this is clnt->cl_xprt */
7291 if (xprt
!= rcu_access_pointer(clnt
->cl_xprt
))
7292 args
.dir
= NFS4_CDFC4_FORE
;
7294 task
= rpc_run_task(&task_setup_data
);
7295 if (!IS_ERR(task
)) {
7296 status
= task
->tk_status
;
7299 status
= PTR_ERR(task
);
7300 trace_nfs4_bind_conn_to_session(clp
, status
);
7302 if (memcmp(res
.sessionid
.data
,
7303 clp
->cl_session
->sess_id
.data
, NFS4_MAX_SESSIONID_LEN
)) {
7304 dprintk("NFS: %s: Session ID mismatch\n", __func__
);
7308 if ((res
.dir
& args
.dir
) != res
.dir
|| res
.dir
== 0) {
7309 dprintk("NFS: %s: Unexpected direction from server\n",
7314 if (res
.use_conn_in_rdma_mode
!= args
.use_conn_in_rdma_mode
) {
7315 dprintk("NFS: %s: Server returned RDMA mode = true\n",
7322 dprintk("<-- %s status= %d\n", __func__
, status
);
7326 struct rpc_bind_conn_calldata
{
7327 struct nfs_client
*clp
;
7328 struct rpc_cred
*cred
;
7332 nfs4_proc_bind_conn_to_session_callback(struct rpc_clnt
*clnt
,
7333 struct rpc_xprt
*xprt
,
7336 struct rpc_bind_conn_calldata
*p
= calldata
;
7338 return nfs4_proc_bind_one_conn_to_session(clnt
, xprt
, p
->clp
, p
->cred
);
7341 int nfs4_proc_bind_conn_to_session(struct nfs_client
*clp
, struct rpc_cred
*cred
)
7343 struct rpc_bind_conn_calldata data
= {
7347 return rpc_clnt_iterate_for_each_xprt(clp
->cl_rpcclient
,
7348 nfs4_proc_bind_conn_to_session_callback
, &data
);
7352 * Minimum set of SP4_MACH_CRED operations from RFC 5661 in the enforce map
7353 * and operations we'd like to see to enable certain features in the allow map
7355 static const struct nfs41_state_protection nfs4_sp4_mach_cred_request
= {
7356 .how
= SP4_MACH_CRED
,
7357 .enforce
.u
.words
= {
7358 [1] = 1 << (OP_BIND_CONN_TO_SESSION
- 32) |
7359 1 << (OP_EXCHANGE_ID
- 32) |
7360 1 << (OP_CREATE_SESSION
- 32) |
7361 1 << (OP_DESTROY_SESSION
- 32) |
7362 1 << (OP_DESTROY_CLIENTID
- 32)
7365 [0] = 1 << (OP_CLOSE
) |
7366 1 << (OP_OPEN_DOWNGRADE
) |
7368 1 << (OP_DELEGRETURN
) |
7370 [1] = 1 << (OP_SECINFO
- 32) |
7371 1 << (OP_SECINFO_NO_NAME
- 32) |
7372 1 << (OP_LAYOUTRETURN
- 32) |
7373 1 << (OP_TEST_STATEID
- 32) |
7374 1 << (OP_FREE_STATEID
- 32) |
7375 1 << (OP_WRITE
- 32)
7380 * Select the state protection mode for client `clp' given the server results
7381 * from exchange_id in `sp'.
7383 * Returns 0 on success, negative errno otherwise.
7385 static int nfs4_sp4_select_mode(struct nfs_client
*clp
,
7386 struct nfs41_state_protection
*sp
)
7388 static const u32 supported_enforce
[NFS4_OP_MAP_NUM_WORDS
] = {
7389 [1] = 1 << (OP_BIND_CONN_TO_SESSION
- 32) |
7390 1 << (OP_EXCHANGE_ID
- 32) |
7391 1 << (OP_CREATE_SESSION
- 32) |
7392 1 << (OP_DESTROY_SESSION
- 32) |
7393 1 << (OP_DESTROY_CLIENTID
- 32)
7397 if (sp
->how
== SP4_MACH_CRED
) {
7398 /* Print state protect result */
7399 dfprintk(MOUNT
, "Server SP4_MACH_CRED support:\n");
7400 for (i
= 0; i
<= LAST_NFS4_OP
; i
++) {
7401 if (test_bit(i
, sp
->enforce
.u
.longs
))
7402 dfprintk(MOUNT
, " enforce op %d\n", i
);
7403 if (test_bit(i
, sp
->allow
.u
.longs
))
7404 dfprintk(MOUNT
, " allow op %d\n", i
);
7407 /* make sure nothing is on enforce list that isn't supported */
7408 for (i
= 0; i
< NFS4_OP_MAP_NUM_WORDS
; i
++) {
7409 if (sp
->enforce
.u
.words
[i
] & ~supported_enforce
[i
]) {
7410 dfprintk(MOUNT
, "sp4_mach_cred: disabled\n");
7416 * Minimal mode - state operations are allowed to use machine
7417 * credential. Note this already happens by default, so the
7418 * client doesn't have to do anything more than the negotiation.
7420 * NOTE: we don't care if EXCHANGE_ID is in the list -
7421 * we're already using the machine cred for exchange_id
7422 * and will never use a different cred.
7424 if (test_bit(OP_BIND_CONN_TO_SESSION
, sp
->enforce
.u
.longs
) &&
7425 test_bit(OP_CREATE_SESSION
, sp
->enforce
.u
.longs
) &&
7426 test_bit(OP_DESTROY_SESSION
, sp
->enforce
.u
.longs
) &&
7427 test_bit(OP_DESTROY_CLIENTID
, sp
->enforce
.u
.longs
)) {
7428 dfprintk(MOUNT
, "sp4_mach_cred:\n");
7429 dfprintk(MOUNT
, " minimal mode enabled\n");
7430 set_bit(NFS_SP4_MACH_CRED_MINIMAL
, &clp
->cl_sp4_flags
);
7432 dfprintk(MOUNT
, "sp4_mach_cred: disabled\n");
7436 if (test_bit(OP_CLOSE
, sp
->allow
.u
.longs
) &&
7437 test_bit(OP_OPEN_DOWNGRADE
, sp
->allow
.u
.longs
) &&
7438 test_bit(OP_DELEGRETURN
, sp
->allow
.u
.longs
) &&
7439 test_bit(OP_LOCKU
, sp
->allow
.u
.longs
)) {
7440 dfprintk(MOUNT
, " cleanup mode enabled\n");
7441 set_bit(NFS_SP4_MACH_CRED_CLEANUP
, &clp
->cl_sp4_flags
);
7444 if (test_bit(OP_LAYOUTRETURN
, sp
->allow
.u
.longs
)) {
7445 dfprintk(MOUNT
, " pnfs cleanup mode enabled\n");
7446 set_bit(NFS_SP4_MACH_CRED_PNFS_CLEANUP
,
7447 &clp
->cl_sp4_flags
);
7450 if (test_bit(OP_SECINFO
, sp
->allow
.u
.longs
) &&
7451 test_bit(OP_SECINFO_NO_NAME
, sp
->allow
.u
.longs
)) {
7452 dfprintk(MOUNT
, " secinfo mode enabled\n");
7453 set_bit(NFS_SP4_MACH_CRED_SECINFO
, &clp
->cl_sp4_flags
);
7456 if (test_bit(OP_TEST_STATEID
, sp
->allow
.u
.longs
) &&
7457 test_bit(OP_FREE_STATEID
, sp
->allow
.u
.longs
)) {
7458 dfprintk(MOUNT
, " stateid mode enabled\n");
7459 set_bit(NFS_SP4_MACH_CRED_STATEID
, &clp
->cl_sp4_flags
);
7462 if (test_bit(OP_WRITE
, sp
->allow
.u
.longs
)) {
7463 dfprintk(MOUNT
, " write mode enabled\n");
7464 set_bit(NFS_SP4_MACH_CRED_WRITE
, &clp
->cl_sp4_flags
);
7467 if (test_bit(OP_COMMIT
, sp
->allow
.u
.longs
)) {
7468 dfprintk(MOUNT
, " commit mode enabled\n");
7469 set_bit(NFS_SP4_MACH_CRED_COMMIT
, &clp
->cl_sp4_flags
);
7476 struct nfs41_exchange_id_data
{
7477 struct nfs41_exchange_id_res res
;
7478 struct nfs41_exchange_id_args args
;
7479 struct rpc_xprt
*xprt
;
7483 static void nfs4_exchange_id_done(struct rpc_task
*task
, void *data
)
7485 struct nfs41_exchange_id_data
*cdata
=
7486 (struct nfs41_exchange_id_data
*)data
;
7487 struct nfs_client
*clp
= cdata
->args
.client
;
7488 int status
= task
->tk_status
;
7490 trace_nfs4_exchange_id(clp
, status
);
7493 status
= nfs4_check_cl_exchange_flags(cdata
->res
.flags
);
7495 if (cdata
->xprt
&& status
== 0) {
7496 status
= nfs4_detect_session_trunking(clp
, &cdata
->res
,
7502 status
= nfs4_sp4_select_mode(clp
, &cdata
->res
.state_protect
);
7505 clp
->cl_clientid
= cdata
->res
.clientid
;
7506 clp
->cl_exchange_flags
= cdata
->res
.flags
;
7507 /* Client ID is not confirmed */
7508 if (!(cdata
->res
.flags
& EXCHGID4_FLAG_CONFIRMED_R
)) {
7509 clear_bit(NFS4_SESSION_ESTABLISHED
,
7510 &clp
->cl_session
->session_state
);
7511 clp
->cl_seqid
= cdata
->res
.seqid
;
7514 kfree(clp
->cl_serverowner
);
7515 clp
->cl_serverowner
= cdata
->res
.server_owner
;
7516 cdata
->res
.server_owner
= NULL
;
7518 /* use the most recent implementation id */
7519 kfree(clp
->cl_implid
);
7520 clp
->cl_implid
= cdata
->res
.impl_id
;
7521 cdata
->res
.impl_id
= NULL
;
7523 if (clp
->cl_serverscope
!= NULL
&&
7524 !nfs41_same_server_scope(clp
->cl_serverscope
,
7525 cdata
->res
.server_scope
)) {
7526 dprintk("%s: server_scope mismatch detected\n",
7528 set_bit(NFS4CLNT_SERVER_SCOPE_MISMATCH
, &clp
->cl_state
);
7529 kfree(clp
->cl_serverscope
);
7530 clp
->cl_serverscope
= NULL
;
7533 if (clp
->cl_serverscope
== NULL
) {
7534 clp
->cl_serverscope
= cdata
->res
.server_scope
;
7535 cdata
->res
.server_scope
= NULL
;
7537 /* Save the EXCHANGE_ID verifier session trunk tests */
7538 memcpy(clp
->cl_confirm
.data
, cdata
->args
.verifier
->data
,
7539 sizeof(clp
->cl_confirm
.data
));
7542 cdata
->rpc_status
= status
;
7546 static void nfs4_exchange_id_release(void *data
)
7548 struct nfs41_exchange_id_data
*cdata
=
7549 (struct nfs41_exchange_id_data
*)data
;
7551 nfs_put_client(cdata
->args
.client
);
7553 xprt_put(cdata
->xprt
);
7554 rpc_clnt_xprt_switch_put(cdata
->args
.client
->cl_rpcclient
);
7556 kfree(cdata
->res
.impl_id
);
7557 kfree(cdata
->res
.server_scope
);
7558 kfree(cdata
->res
.server_owner
);
7562 static const struct rpc_call_ops nfs4_exchange_id_call_ops
= {
7563 .rpc_call_done
= nfs4_exchange_id_done
,
7564 .rpc_release
= nfs4_exchange_id_release
,
7568 * _nfs4_proc_exchange_id()
7570 * Wrapper for EXCHANGE_ID operation.
7572 static int _nfs4_proc_exchange_id(struct nfs_client
*clp
, struct rpc_cred
*cred
,
7573 u32 sp4_how
, struct rpc_xprt
*xprt
)
7575 nfs4_verifier verifier
;
7576 struct rpc_message msg
= {
7577 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_EXCHANGE_ID
],
7580 struct rpc_task_setup task_setup_data
= {
7581 .rpc_client
= clp
->cl_rpcclient
,
7582 .callback_ops
= &nfs4_exchange_id_call_ops
,
7583 .rpc_message
= &msg
,
7584 .flags
= RPC_TASK_ASYNC
| RPC_TASK_TIMEOUT
,
7586 struct nfs41_exchange_id_data
*calldata
;
7587 struct rpc_task
*task
;
7590 if (!atomic_inc_not_zero(&clp
->cl_count
))
7594 calldata
= kzalloc(sizeof(*calldata
), GFP_NOFS
);
7599 nfs4_init_boot_verifier(clp
, &verifier
);
7601 status
= nfs4_init_uniform_client_string(clp
);
7605 dprintk("NFS call exchange_id auth=%s, '%s'\n",
7606 clp
->cl_rpcclient
->cl_auth
->au_ops
->au_name
,
7609 calldata
->res
.server_owner
= kzalloc(sizeof(struct nfs41_server_owner
),
7612 if (unlikely(calldata
->res
.server_owner
== NULL
))
7615 calldata
->res
.server_scope
= kzalloc(sizeof(struct nfs41_server_scope
),
7617 if (unlikely(calldata
->res
.server_scope
== NULL
))
7618 goto out_server_owner
;
7620 calldata
->res
.impl_id
= kzalloc(sizeof(struct nfs41_impl_id
), GFP_NOFS
);
7621 if (unlikely(calldata
->res
.impl_id
== NULL
))
7622 goto out_server_scope
;
7626 calldata
->args
.state_protect
.how
= SP4_NONE
;
7630 calldata
->args
.state_protect
= nfs4_sp4_mach_cred_request
;
7640 calldata
->xprt
= xprt
;
7641 task_setup_data
.rpc_xprt
= xprt
;
7642 task_setup_data
.flags
=
7643 RPC_TASK_SOFT
|RPC_TASK_SOFTCONN
|RPC_TASK_ASYNC
;
7644 calldata
->args
.verifier
= &clp
->cl_confirm
;
7646 calldata
->args
.verifier
= &verifier
;
7648 calldata
->args
.client
= clp
;
7649 #ifdef CONFIG_NFS_V4_1_MIGRATION
7650 calldata
->args
.flags
= EXCHGID4_FLAG_SUPP_MOVED_REFER
|
7651 EXCHGID4_FLAG_BIND_PRINC_STATEID
|
7652 EXCHGID4_FLAG_SUPP_MOVED_MIGR
,
7654 calldata
->args
.flags
= EXCHGID4_FLAG_SUPP_MOVED_REFER
|
7655 EXCHGID4_FLAG_BIND_PRINC_STATEID
,
7657 msg
.rpc_argp
= &calldata
->args
;
7658 msg
.rpc_resp
= &calldata
->res
;
7659 task_setup_data
.callback_data
= calldata
;
7661 task
= rpc_run_task(&task_setup_data
);
7663 status
= PTR_ERR(task
);
7668 status
= rpc_wait_for_completion_task(task
);
7670 status
= calldata
->rpc_status
;
7671 } else /* session trunking test */
7672 status
= calldata
->rpc_status
;
7676 if (clp
->cl_implid
!= NULL
)
7677 dprintk("NFS reply exchange_id: Server Implementation ID: "
7678 "domain: %s, name: %s, date: %llu,%u\n",
7679 clp
->cl_implid
->domain
, clp
->cl_implid
->name
,
7680 clp
->cl_implid
->date
.seconds
,
7681 clp
->cl_implid
->date
.nseconds
);
7682 dprintk("NFS reply exchange_id: %d\n", status
);
7686 kfree(calldata
->res
.impl_id
);
7688 kfree(calldata
->res
.server_scope
);
7690 kfree(calldata
->res
.server_owner
);
7697 * nfs4_proc_exchange_id()
7699 * Returns zero, a negative errno, or a negative NFS4ERR status code.
7701 * Since the clientid has expired, all compounds using sessions
7702 * associated with the stale clientid will be returning
7703 * NFS4ERR_BADSESSION in the sequence operation, and will therefore
7704 * be in some phase of session reset.
7706 * Will attempt to negotiate SP4_MACH_CRED if krb5i / krb5p auth is used.
7708 int nfs4_proc_exchange_id(struct nfs_client
*clp
, struct rpc_cred
*cred
)
7710 rpc_authflavor_t authflavor
= clp
->cl_rpcclient
->cl_auth
->au_flavor
;
7713 /* try SP4_MACH_CRED if krb5i/p */
7714 if (authflavor
== RPC_AUTH_GSS_KRB5I
||
7715 authflavor
== RPC_AUTH_GSS_KRB5P
) {
7716 status
= _nfs4_proc_exchange_id(clp
, cred
, SP4_MACH_CRED
, NULL
);
7722 return _nfs4_proc_exchange_id(clp
, cred
, SP4_NONE
, NULL
);
7726 * nfs4_test_session_trunk
7728 * This is an add_xprt_test() test function called from
7729 * rpc_clnt_setup_test_and_add_xprt.
7731 * The rpc_xprt_switch is referrenced by rpc_clnt_setup_test_and_add_xprt
7732 * and is dereferrenced in nfs4_exchange_id_release
7734 * Upon success, add the new transport to the rpc_clnt
7736 * @clnt: struct rpc_clnt to get new transport
7737 * @xprt: the rpc_xprt to test
7738 * @data: call data for _nfs4_proc_exchange_id.
7740 int nfs4_test_session_trunk(struct rpc_clnt
*clnt
, struct rpc_xprt
*xprt
,
7743 struct nfs4_add_xprt_data
*adata
= (struct nfs4_add_xprt_data
*)data
;
7746 dprintk("--> %s try %s\n", __func__
,
7747 xprt
->address_strings
[RPC_DISPLAY_ADDR
]);
7749 sp4_how
= (adata
->clp
->cl_sp4_flags
== 0 ? SP4_NONE
: SP4_MACH_CRED
);
7751 /* Test connection for session trunking. Async exchange_id call */
7752 return _nfs4_proc_exchange_id(adata
->clp
, adata
->cred
, sp4_how
, xprt
);
7754 EXPORT_SYMBOL_GPL(nfs4_test_session_trunk
);
7756 static int _nfs4_proc_destroy_clientid(struct nfs_client
*clp
,
7757 struct rpc_cred
*cred
)
7759 struct rpc_message msg
= {
7760 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_DESTROY_CLIENTID
],
7766 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
7767 trace_nfs4_destroy_clientid(clp
, status
);
7769 dprintk("NFS: Got error %d from the server %s on "
7770 "DESTROY_CLIENTID.", status
, clp
->cl_hostname
);
7774 static int nfs4_proc_destroy_clientid(struct nfs_client
*clp
,
7775 struct rpc_cred
*cred
)
7780 for (loop
= NFS4_MAX_LOOP_ON_RECOVER
; loop
!= 0; loop
--) {
7781 ret
= _nfs4_proc_destroy_clientid(clp
, cred
);
7783 case -NFS4ERR_DELAY
:
7784 case -NFS4ERR_CLIENTID_BUSY
:
7794 int nfs4_destroy_clientid(struct nfs_client
*clp
)
7796 struct rpc_cred
*cred
;
7799 if (clp
->cl_mvops
->minor_version
< 1)
7801 if (clp
->cl_exchange_flags
== 0)
7803 if (clp
->cl_preserve_clid
)
7805 cred
= nfs4_get_clid_cred(clp
);
7806 ret
= nfs4_proc_destroy_clientid(clp
, cred
);
7811 case -NFS4ERR_STALE_CLIENTID
:
7812 clp
->cl_exchange_flags
= 0;
7818 struct nfs4_get_lease_time_data
{
7819 struct nfs4_get_lease_time_args
*args
;
7820 struct nfs4_get_lease_time_res
*res
;
7821 struct nfs_client
*clp
;
7824 static void nfs4_get_lease_time_prepare(struct rpc_task
*task
,
7827 struct nfs4_get_lease_time_data
*data
=
7828 (struct nfs4_get_lease_time_data
*)calldata
;
7830 dprintk("--> %s\n", __func__
);
7831 /* just setup sequence, do not trigger session recovery
7832 since we're invoked within one */
7833 nfs41_setup_sequence(data
->clp
->cl_session
,
7834 &data
->args
->la_seq_args
,
7835 &data
->res
->lr_seq_res
,
7837 dprintk("<-- %s\n", __func__
);
7841 * Called from nfs4_state_manager thread for session setup, so don't recover
7842 * from sequence operation or clientid errors.
7844 static void nfs4_get_lease_time_done(struct rpc_task
*task
, void *calldata
)
7846 struct nfs4_get_lease_time_data
*data
=
7847 (struct nfs4_get_lease_time_data
*)calldata
;
7849 dprintk("--> %s\n", __func__
);
7850 if (!nfs41_sequence_done(task
, &data
->res
->lr_seq_res
))
7852 switch (task
->tk_status
) {
7853 case -NFS4ERR_DELAY
:
7854 case -NFS4ERR_GRACE
:
7855 dprintk("%s Retry: tk_status %d\n", __func__
, task
->tk_status
);
7856 rpc_delay(task
, NFS4_POLL_RETRY_MIN
);
7857 task
->tk_status
= 0;
7859 case -NFS4ERR_RETRY_UNCACHED_REP
:
7860 rpc_restart_call_prepare(task
);
7863 dprintk("<-- %s\n", __func__
);
7866 static const struct rpc_call_ops nfs4_get_lease_time_ops
= {
7867 .rpc_call_prepare
= nfs4_get_lease_time_prepare
,
7868 .rpc_call_done
= nfs4_get_lease_time_done
,
7871 int nfs4_proc_get_lease_time(struct nfs_client
*clp
, struct nfs_fsinfo
*fsinfo
)
7873 struct rpc_task
*task
;
7874 struct nfs4_get_lease_time_args args
;
7875 struct nfs4_get_lease_time_res res
= {
7876 .lr_fsinfo
= fsinfo
,
7878 struct nfs4_get_lease_time_data data
= {
7883 struct rpc_message msg
= {
7884 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GET_LEASE_TIME
],
7888 struct rpc_task_setup task_setup
= {
7889 .rpc_client
= clp
->cl_rpcclient
,
7890 .rpc_message
= &msg
,
7891 .callback_ops
= &nfs4_get_lease_time_ops
,
7892 .callback_data
= &data
,
7893 .flags
= RPC_TASK_TIMEOUT
,
7897 nfs4_init_sequence(&args
.la_seq_args
, &res
.lr_seq_res
, 0);
7898 nfs4_set_sequence_privileged(&args
.la_seq_args
);
7899 dprintk("--> %s\n", __func__
);
7900 task
= rpc_run_task(&task_setup
);
7903 status
= PTR_ERR(task
);
7905 status
= task
->tk_status
;
7908 dprintk("<-- %s return %d\n", __func__
, status
);
7914 * Initialize the values to be used by the client in CREATE_SESSION
7915 * If nfs4_init_session set the fore channel request and response sizes,
7918 * Set the back channel max_resp_sz_cached to zero to force the client to
7919 * always set csa_cachethis to FALSE because the current implementation
7920 * of the back channel DRC only supports caching the CB_SEQUENCE operation.
7922 static void nfs4_init_channel_attrs(struct nfs41_create_session_args
*args
,
7923 struct rpc_clnt
*clnt
)
7925 unsigned int max_rqst_sz
, max_resp_sz
;
7926 unsigned int max_bc_payload
= rpc_max_bc_payload(clnt
);
7928 max_rqst_sz
= NFS_MAX_FILE_IO_SIZE
+ nfs41_maxwrite_overhead
;
7929 max_resp_sz
= NFS_MAX_FILE_IO_SIZE
+ nfs41_maxread_overhead
;
7931 /* Fore channel attributes */
7932 args
->fc_attrs
.max_rqst_sz
= max_rqst_sz
;
7933 args
->fc_attrs
.max_resp_sz
= max_resp_sz
;
7934 args
->fc_attrs
.max_ops
= NFS4_MAX_OPS
;
7935 args
->fc_attrs
.max_reqs
= max_session_slots
;
7937 dprintk("%s: Fore Channel : max_rqst_sz=%u max_resp_sz=%u "
7938 "max_ops=%u max_reqs=%u\n",
7940 args
->fc_attrs
.max_rqst_sz
, args
->fc_attrs
.max_resp_sz
,
7941 args
->fc_attrs
.max_ops
, args
->fc_attrs
.max_reqs
);
7943 /* Back channel attributes */
7944 args
->bc_attrs
.max_rqst_sz
= max_bc_payload
;
7945 args
->bc_attrs
.max_resp_sz
= max_bc_payload
;
7946 args
->bc_attrs
.max_resp_sz_cached
= 0;
7947 args
->bc_attrs
.max_ops
= NFS4_MAX_BACK_CHANNEL_OPS
;
7948 args
->bc_attrs
.max_reqs
= min_t(unsigned short, max_session_cb_slots
, 1);
7950 dprintk("%s: Back Channel : max_rqst_sz=%u max_resp_sz=%u "
7951 "max_resp_sz_cached=%u max_ops=%u max_reqs=%u\n",
7953 args
->bc_attrs
.max_rqst_sz
, args
->bc_attrs
.max_resp_sz
,
7954 args
->bc_attrs
.max_resp_sz_cached
, args
->bc_attrs
.max_ops
,
7955 args
->bc_attrs
.max_reqs
);
7958 static int nfs4_verify_fore_channel_attrs(struct nfs41_create_session_args
*args
,
7959 struct nfs41_create_session_res
*res
)
7961 struct nfs4_channel_attrs
*sent
= &args
->fc_attrs
;
7962 struct nfs4_channel_attrs
*rcvd
= &res
->fc_attrs
;
7964 if (rcvd
->max_resp_sz
> sent
->max_resp_sz
)
7967 * Our requested max_ops is the minimum we need; we're not
7968 * prepared to break up compounds into smaller pieces than that.
7969 * So, no point even trying to continue if the server won't
7972 if (rcvd
->max_ops
< sent
->max_ops
)
7974 if (rcvd
->max_reqs
== 0)
7976 if (rcvd
->max_reqs
> NFS4_MAX_SLOT_TABLE
)
7977 rcvd
->max_reqs
= NFS4_MAX_SLOT_TABLE
;
7981 static int nfs4_verify_back_channel_attrs(struct nfs41_create_session_args
*args
,
7982 struct nfs41_create_session_res
*res
)
7984 struct nfs4_channel_attrs
*sent
= &args
->bc_attrs
;
7985 struct nfs4_channel_attrs
*rcvd
= &res
->bc_attrs
;
7987 if (!(res
->flags
& SESSION4_BACK_CHAN
))
7989 if (rcvd
->max_rqst_sz
> sent
->max_rqst_sz
)
7991 if (rcvd
->max_resp_sz
< sent
->max_resp_sz
)
7993 if (rcvd
->max_resp_sz_cached
> sent
->max_resp_sz_cached
)
7995 if (rcvd
->max_ops
> sent
->max_ops
)
7997 if (rcvd
->max_reqs
> sent
->max_reqs
)
8003 static int nfs4_verify_channel_attrs(struct nfs41_create_session_args
*args
,
8004 struct nfs41_create_session_res
*res
)
8008 ret
= nfs4_verify_fore_channel_attrs(args
, res
);
8011 return nfs4_verify_back_channel_attrs(args
, res
);
8014 static void nfs4_update_session(struct nfs4_session
*session
,
8015 struct nfs41_create_session_res
*res
)
8017 nfs4_copy_sessionid(&session
->sess_id
, &res
->sessionid
);
8018 /* Mark client id and session as being confirmed */
8019 session
->clp
->cl_exchange_flags
|= EXCHGID4_FLAG_CONFIRMED_R
;
8020 set_bit(NFS4_SESSION_ESTABLISHED
, &session
->session_state
);
8021 session
->flags
= res
->flags
;
8022 memcpy(&session
->fc_attrs
, &res
->fc_attrs
, sizeof(session
->fc_attrs
));
8023 if (res
->flags
& SESSION4_BACK_CHAN
)
8024 memcpy(&session
->bc_attrs
, &res
->bc_attrs
,
8025 sizeof(session
->bc_attrs
));
8028 static int _nfs4_proc_create_session(struct nfs_client
*clp
,
8029 struct rpc_cred
*cred
)
8031 struct nfs4_session
*session
= clp
->cl_session
;
8032 struct nfs41_create_session_args args
= {
8034 .clientid
= clp
->cl_clientid
,
8035 .seqid
= clp
->cl_seqid
,
8036 .cb_program
= NFS4_CALLBACK
,
8038 struct nfs41_create_session_res res
;
8040 struct rpc_message msg
= {
8041 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_CREATE_SESSION
],
8048 nfs4_init_channel_attrs(&args
, clp
->cl_rpcclient
);
8049 args
.flags
= (SESSION4_PERSIST
| SESSION4_BACK_CHAN
);
8051 status
= rpc_call_sync(session
->clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
8052 trace_nfs4_create_session(clp
, status
);
8055 case -NFS4ERR_STALE_CLIENTID
:
8056 case -NFS4ERR_DELAY
:
8065 /* Verify the session's negotiated channel_attrs values */
8066 status
= nfs4_verify_channel_attrs(&args
, &res
);
8067 /* Increment the clientid slot sequence id */
8070 nfs4_update_session(session
, &res
);
8077 * Issues a CREATE_SESSION operation to the server.
8078 * It is the responsibility of the caller to verify the session is
8079 * expired before calling this routine.
8081 int nfs4_proc_create_session(struct nfs_client
*clp
, struct rpc_cred
*cred
)
8085 struct nfs4_session
*session
= clp
->cl_session
;
8087 dprintk("--> %s clp=%p session=%p\n", __func__
, clp
, session
);
8089 status
= _nfs4_proc_create_session(clp
, cred
);
8093 /* Init or reset the session slot tables */
8094 status
= nfs4_setup_session_slot_tables(session
);
8095 dprintk("slot table setup returned %d\n", status
);
8099 ptr
= (unsigned *)&session
->sess_id
.data
[0];
8100 dprintk("%s client>seqid %d sessionid %u:%u:%u:%u\n", __func__
,
8101 clp
->cl_seqid
, ptr
[0], ptr
[1], ptr
[2], ptr
[3]);
8103 dprintk("<-- %s\n", __func__
);
8108 * Issue the over-the-wire RPC DESTROY_SESSION.
8109 * The caller must serialize access to this routine.
8111 int nfs4_proc_destroy_session(struct nfs4_session
*session
,
8112 struct rpc_cred
*cred
)
8114 struct rpc_message msg
= {
8115 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_DESTROY_SESSION
],
8116 .rpc_argp
= session
,
8121 dprintk("--> nfs4_proc_destroy_session\n");
8123 /* session is still being setup */
8124 if (!test_and_clear_bit(NFS4_SESSION_ESTABLISHED
, &session
->session_state
))
8127 status
= rpc_call_sync(session
->clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
8128 trace_nfs4_destroy_session(session
->clp
, status
);
8131 dprintk("NFS: Got error %d from the server on DESTROY_SESSION. "
8132 "Session has been destroyed regardless...\n", status
);
8134 dprintk("<-- nfs4_proc_destroy_session\n");
8139 * Renew the cl_session lease.
8141 struct nfs4_sequence_data
{
8142 struct nfs_client
*clp
;
8143 struct nfs4_sequence_args args
;
8144 struct nfs4_sequence_res res
;
8147 static void nfs41_sequence_release(void *data
)
8149 struct nfs4_sequence_data
*calldata
= data
;
8150 struct nfs_client
*clp
= calldata
->clp
;
8152 if (atomic_read(&clp
->cl_count
) > 1)
8153 nfs4_schedule_state_renewal(clp
);
8154 nfs_put_client(clp
);
8158 static int nfs41_sequence_handle_errors(struct rpc_task
*task
, struct nfs_client
*clp
)
8160 switch(task
->tk_status
) {
8161 case -NFS4ERR_DELAY
:
8162 rpc_delay(task
, NFS4_POLL_RETRY_MAX
);
8165 nfs4_schedule_lease_recovery(clp
);
8170 static void nfs41_sequence_call_done(struct rpc_task
*task
, void *data
)
8172 struct nfs4_sequence_data
*calldata
= data
;
8173 struct nfs_client
*clp
= calldata
->clp
;
8175 if (!nfs41_sequence_done(task
, task
->tk_msg
.rpc_resp
))
8178 trace_nfs4_sequence(clp
, task
->tk_status
);
8179 if (task
->tk_status
< 0) {
8180 dprintk("%s ERROR %d\n", __func__
, task
->tk_status
);
8181 if (atomic_read(&clp
->cl_count
) == 1)
8184 if (nfs41_sequence_handle_errors(task
, clp
) == -EAGAIN
) {
8185 rpc_restart_call_prepare(task
);
8189 dprintk("%s rpc_cred %p\n", __func__
, task
->tk_msg
.rpc_cred
);
8191 dprintk("<-- %s\n", __func__
);
8194 static void nfs41_sequence_prepare(struct rpc_task
*task
, void *data
)
8196 struct nfs4_sequence_data
*calldata
= data
;
8197 struct nfs_client
*clp
= calldata
->clp
;
8198 struct nfs4_sequence_args
*args
;
8199 struct nfs4_sequence_res
*res
;
8201 args
= task
->tk_msg
.rpc_argp
;
8202 res
= task
->tk_msg
.rpc_resp
;
8204 nfs41_setup_sequence(clp
->cl_session
, args
, res
, task
);
8207 static const struct rpc_call_ops nfs41_sequence_ops
= {
8208 .rpc_call_done
= nfs41_sequence_call_done
,
8209 .rpc_call_prepare
= nfs41_sequence_prepare
,
8210 .rpc_release
= nfs41_sequence_release
,
8213 static struct rpc_task
*_nfs41_proc_sequence(struct nfs_client
*clp
,
8214 struct rpc_cred
*cred
,
8217 struct nfs4_sequence_data
*calldata
;
8218 struct rpc_message msg
= {
8219 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SEQUENCE
],
8222 struct rpc_task_setup task_setup_data
= {
8223 .rpc_client
= clp
->cl_rpcclient
,
8224 .rpc_message
= &msg
,
8225 .callback_ops
= &nfs41_sequence_ops
,
8226 .flags
= RPC_TASK_ASYNC
| RPC_TASK_TIMEOUT
,
8229 if (!atomic_inc_not_zero(&clp
->cl_count
))
8230 return ERR_PTR(-EIO
);
8231 calldata
= kzalloc(sizeof(*calldata
), GFP_NOFS
);
8232 if (calldata
== NULL
) {
8233 nfs_put_client(clp
);
8234 return ERR_PTR(-ENOMEM
);
8236 nfs4_init_sequence(&calldata
->args
, &calldata
->res
, 0);
8238 nfs4_set_sequence_privileged(&calldata
->args
);
8239 msg
.rpc_argp
= &calldata
->args
;
8240 msg
.rpc_resp
= &calldata
->res
;
8241 calldata
->clp
= clp
;
8242 task_setup_data
.callback_data
= calldata
;
8244 return rpc_run_task(&task_setup_data
);
8247 static int nfs41_proc_async_sequence(struct nfs_client
*clp
, struct rpc_cred
*cred
, unsigned renew_flags
)
8249 struct rpc_task
*task
;
8252 if ((renew_flags
& NFS4_RENEW_TIMEOUT
) == 0)
8254 task
= _nfs41_proc_sequence(clp
, cred
, false);
8256 ret
= PTR_ERR(task
);
8258 rpc_put_task_async(task
);
8259 dprintk("<-- %s status=%d\n", __func__
, ret
);
8263 static int nfs4_proc_sequence(struct nfs_client
*clp
, struct rpc_cred
*cred
)
8265 struct rpc_task
*task
;
8268 task
= _nfs41_proc_sequence(clp
, cred
, true);
8270 ret
= PTR_ERR(task
);
8273 ret
= rpc_wait_for_completion_task(task
);
8275 ret
= task
->tk_status
;
8278 dprintk("<-- %s status=%d\n", __func__
, ret
);
8282 struct nfs4_reclaim_complete_data
{
8283 struct nfs_client
*clp
;
8284 struct nfs41_reclaim_complete_args arg
;
8285 struct nfs41_reclaim_complete_res res
;
8288 static void nfs4_reclaim_complete_prepare(struct rpc_task
*task
, void *data
)
8290 struct nfs4_reclaim_complete_data
*calldata
= data
;
8292 nfs41_setup_sequence(calldata
->clp
->cl_session
,
8293 &calldata
->arg
.seq_args
,
8294 &calldata
->res
.seq_res
,
8298 static int nfs41_reclaim_complete_handle_errors(struct rpc_task
*task
, struct nfs_client
*clp
)
8300 switch(task
->tk_status
) {
8302 case -NFS4ERR_COMPLETE_ALREADY
:
8303 case -NFS4ERR_WRONG_CRED
: /* What to do here? */
8305 case -NFS4ERR_DELAY
:
8306 rpc_delay(task
, NFS4_POLL_RETRY_MAX
);
8308 case -NFS4ERR_RETRY_UNCACHED_REP
:
8311 nfs4_schedule_lease_recovery(clp
);
8316 static void nfs4_reclaim_complete_done(struct rpc_task
*task
, void *data
)
8318 struct nfs4_reclaim_complete_data
*calldata
= data
;
8319 struct nfs_client
*clp
= calldata
->clp
;
8320 struct nfs4_sequence_res
*res
= &calldata
->res
.seq_res
;
8322 dprintk("--> %s\n", __func__
);
8323 if (!nfs41_sequence_done(task
, res
))
8326 trace_nfs4_reclaim_complete(clp
, task
->tk_status
);
8327 if (nfs41_reclaim_complete_handle_errors(task
, clp
) == -EAGAIN
) {
8328 rpc_restart_call_prepare(task
);
8331 dprintk("<-- %s\n", __func__
);
8334 static void nfs4_free_reclaim_complete_data(void *data
)
8336 struct nfs4_reclaim_complete_data
*calldata
= data
;
8341 static const struct rpc_call_ops nfs4_reclaim_complete_call_ops
= {
8342 .rpc_call_prepare
= nfs4_reclaim_complete_prepare
,
8343 .rpc_call_done
= nfs4_reclaim_complete_done
,
8344 .rpc_release
= nfs4_free_reclaim_complete_data
,
8348 * Issue a global reclaim complete.
8350 static int nfs41_proc_reclaim_complete(struct nfs_client
*clp
,
8351 struct rpc_cred
*cred
)
8353 struct nfs4_reclaim_complete_data
*calldata
;
8354 struct rpc_task
*task
;
8355 struct rpc_message msg
= {
8356 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RECLAIM_COMPLETE
],
8359 struct rpc_task_setup task_setup_data
= {
8360 .rpc_client
= clp
->cl_rpcclient
,
8361 .rpc_message
= &msg
,
8362 .callback_ops
= &nfs4_reclaim_complete_call_ops
,
8363 .flags
= RPC_TASK_ASYNC
,
8365 int status
= -ENOMEM
;
8367 dprintk("--> %s\n", __func__
);
8368 calldata
= kzalloc(sizeof(*calldata
), GFP_NOFS
);
8369 if (calldata
== NULL
)
8371 calldata
->clp
= clp
;
8372 calldata
->arg
.one_fs
= 0;
8374 nfs4_init_sequence(&calldata
->arg
.seq_args
, &calldata
->res
.seq_res
, 0);
8375 nfs4_set_sequence_privileged(&calldata
->arg
.seq_args
);
8376 msg
.rpc_argp
= &calldata
->arg
;
8377 msg
.rpc_resp
= &calldata
->res
;
8378 task_setup_data
.callback_data
= calldata
;
8379 task
= rpc_run_task(&task_setup_data
);
8381 status
= PTR_ERR(task
);
8384 status
= nfs4_wait_for_completion_rpc_task(task
);
8386 status
= task
->tk_status
;
8390 dprintk("<-- %s status=%d\n", __func__
, status
);
8395 nfs4_layoutget_prepare(struct rpc_task
*task
, void *calldata
)
8397 struct nfs4_layoutget
*lgp
= calldata
;
8398 struct nfs_server
*server
= NFS_SERVER(lgp
->args
.inode
);
8399 struct nfs4_session
*session
= nfs4_get_session(server
);
8401 dprintk("--> %s\n", __func__
);
8402 nfs41_setup_sequence(session
, &lgp
->args
.seq_args
,
8403 &lgp
->res
.seq_res
, task
);
8404 dprintk("<-- %s\n", __func__
);
8407 static void nfs4_layoutget_done(struct rpc_task
*task
, void *calldata
)
8409 struct nfs4_layoutget
*lgp
= calldata
;
8411 dprintk("--> %s\n", __func__
);
8412 nfs41_sequence_process(task
, &lgp
->res
.seq_res
);
8413 dprintk("<-- %s\n", __func__
);
8417 nfs4_layoutget_handle_exception(struct rpc_task
*task
,
8418 struct nfs4_layoutget
*lgp
, struct nfs4_exception
*exception
)
8420 struct inode
*inode
= lgp
->args
.inode
;
8421 struct nfs_server
*server
= NFS_SERVER(inode
);
8422 struct pnfs_layout_hdr
*lo
;
8423 int nfs4err
= task
->tk_status
;
8424 int err
, status
= 0;
8427 dprintk("--> %s tk_status => %d\n", __func__
, -task
->tk_status
);
8434 * NFS4ERR_LAYOUTUNAVAILABLE means we are not supposed to use pnfs
8435 * on the file. set tk_status to -ENODATA to tell upper layer to
8438 case -NFS4ERR_LAYOUTUNAVAILABLE
:
8442 * NFS4ERR_BADLAYOUT means the MDS cannot return a layout of
8443 * length lgp->args.minlength != 0 (see RFC5661 section 18.43.3).
8445 case -NFS4ERR_BADLAYOUT
:
8446 status
= -EOVERFLOW
;
8449 * NFS4ERR_LAYOUTTRYLATER is a conflict with another client
8450 * (or clients) writing to the same RAID stripe except when
8451 * the minlength argument is 0 (see RFC5661 section 18.43.3).
8453 * Treat it like we would RECALLCONFLICT -- we retry for a little
8454 * while, and then eventually give up.
8456 case -NFS4ERR_LAYOUTTRYLATER
:
8457 if (lgp
->args
.minlength
== 0) {
8458 status
= -EOVERFLOW
;
8463 case -NFS4ERR_RECALLCONFLICT
:
8464 status
= -ERECALLCONFLICT
;
8466 case -NFS4ERR_DELEG_REVOKED
:
8467 case -NFS4ERR_ADMIN_REVOKED
:
8468 case -NFS4ERR_EXPIRED
:
8469 case -NFS4ERR_BAD_STATEID
:
8470 exception
->timeout
= 0;
8471 spin_lock(&inode
->i_lock
);
8472 lo
= NFS_I(inode
)->layout
;
8473 /* If the open stateid was bad, then recover it. */
8474 if (!lo
|| test_bit(NFS_LAYOUT_INVALID_STID
, &lo
->plh_flags
) ||
8475 nfs4_stateid_match_other(&lgp
->args
.stateid
,
8476 &lgp
->args
.ctx
->state
->stateid
)) {
8477 spin_unlock(&inode
->i_lock
);
8478 exception
->state
= lgp
->args
.ctx
->state
;
8479 exception
->stateid
= &lgp
->args
.stateid
;
8484 * Mark the bad layout state as invalid, then retry
8486 pnfs_mark_layout_stateid_invalid(lo
, &head
);
8487 spin_unlock(&inode
->i_lock
);
8488 pnfs_free_lseg_list(&head
);
8493 err
= nfs4_handle_exception(server
, nfs4err
, exception
);
8495 if (exception
->retry
)
8501 dprintk("<-- %s\n", __func__
);
8505 static size_t max_response_pages(struct nfs_server
*server
)
8507 u32 max_resp_sz
= server
->nfs_client
->cl_session
->fc_attrs
.max_resp_sz
;
8508 return nfs_page_array_len(0, max_resp_sz
);
8511 static void nfs4_free_pages(struct page
**pages
, size_t size
)
8518 for (i
= 0; i
< size
; i
++) {
8521 __free_page(pages
[i
]);
8526 static struct page
**nfs4_alloc_pages(size_t size
, gfp_t gfp_flags
)
8528 struct page
**pages
;
8531 pages
= kcalloc(size
, sizeof(struct page
*), gfp_flags
);
8533 dprintk("%s: can't alloc array of %zu pages\n", __func__
, size
);
8537 for (i
= 0; i
< size
; i
++) {
8538 pages
[i
] = alloc_page(gfp_flags
);
8540 dprintk("%s: failed to allocate page\n", __func__
);
8541 nfs4_free_pages(pages
, size
);
8549 static void nfs4_layoutget_release(void *calldata
)
8551 struct nfs4_layoutget
*lgp
= calldata
;
8552 struct inode
*inode
= lgp
->args
.inode
;
8553 struct nfs_server
*server
= NFS_SERVER(inode
);
8554 size_t max_pages
= max_response_pages(server
);
8556 dprintk("--> %s\n", __func__
);
8557 nfs4_free_pages(lgp
->args
.layout
.pages
, max_pages
);
8558 pnfs_put_layout_hdr(NFS_I(inode
)->layout
);
8559 put_nfs_open_context(lgp
->args
.ctx
);
8561 dprintk("<-- %s\n", __func__
);
8564 static const struct rpc_call_ops nfs4_layoutget_call_ops
= {
8565 .rpc_call_prepare
= nfs4_layoutget_prepare
,
8566 .rpc_call_done
= nfs4_layoutget_done
,
8567 .rpc_release
= nfs4_layoutget_release
,
8570 struct pnfs_layout_segment
*
8571 nfs4_proc_layoutget(struct nfs4_layoutget
*lgp
, long *timeout
, gfp_t gfp_flags
)
8573 struct inode
*inode
= lgp
->args
.inode
;
8574 struct nfs_server
*server
= NFS_SERVER(inode
);
8575 size_t max_pages
= max_response_pages(server
);
8576 struct rpc_task
*task
;
8577 struct rpc_message msg
= {
8578 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LAYOUTGET
],
8579 .rpc_argp
= &lgp
->args
,
8580 .rpc_resp
= &lgp
->res
,
8581 .rpc_cred
= lgp
->cred
,
8583 struct rpc_task_setup task_setup_data
= {
8584 .rpc_client
= server
->client
,
8585 .rpc_message
= &msg
,
8586 .callback_ops
= &nfs4_layoutget_call_ops
,
8587 .callback_data
= lgp
,
8588 .flags
= RPC_TASK_ASYNC
,
8590 struct pnfs_layout_segment
*lseg
= NULL
;
8591 struct nfs4_exception exception
= {
8593 .timeout
= *timeout
,
8597 dprintk("--> %s\n", __func__
);
8599 /* nfs4_layoutget_release calls pnfs_put_layout_hdr */
8600 pnfs_get_layout_hdr(NFS_I(inode
)->layout
);
8602 lgp
->args
.layout
.pages
= nfs4_alloc_pages(max_pages
, gfp_flags
);
8603 if (!lgp
->args
.layout
.pages
) {
8604 nfs4_layoutget_release(lgp
);
8605 return ERR_PTR(-ENOMEM
);
8607 lgp
->args
.layout
.pglen
= max_pages
* PAGE_SIZE
;
8609 lgp
->res
.layoutp
= &lgp
->args
.layout
;
8610 lgp
->res
.seq_res
.sr_slot
= NULL
;
8611 nfs4_init_sequence(&lgp
->args
.seq_args
, &lgp
->res
.seq_res
, 0);
8613 task
= rpc_run_task(&task_setup_data
);
8615 return ERR_CAST(task
);
8616 status
= nfs4_wait_for_completion_rpc_task(task
);
8618 status
= nfs4_layoutget_handle_exception(task
, lgp
, &exception
);
8619 *timeout
= exception
.timeout
;
8622 trace_nfs4_layoutget(lgp
->args
.ctx
,
8628 /* if layoutp->len is 0, nfs4_layoutget_prepare called rpc_exit */
8629 if (status
== 0 && lgp
->res
.layoutp
->len
)
8630 lseg
= pnfs_layout_process(lgp
);
8631 nfs4_sequence_free_slot(&lgp
->res
.seq_res
);
8633 dprintk("<-- %s status=%d\n", __func__
, status
);
8635 return ERR_PTR(status
);
8640 nfs4_layoutreturn_prepare(struct rpc_task
*task
, void *calldata
)
8642 struct nfs4_layoutreturn
*lrp
= calldata
;
8644 dprintk("--> %s\n", __func__
);
8645 nfs41_setup_sequence(lrp
->clp
->cl_session
,
8646 &lrp
->args
.seq_args
,
8651 static void nfs4_layoutreturn_done(struct rpc_task
*task
, void *calldata
)
8653 struct nfs4_layoutreturn
*lrp
= calldata
;
8654 struct nfs_server
*server
;
8656 dprintk("--> %s\n", __func__
);
8658 if (!nfs41_sequence_process(task
, &lrp
->res
.seq_res
))
8661 server
= NFS_SERVER(lrp
->args
.inode
);
8662 switch (task
->tk_status
) {
8664 task
->tk_status
= 0;
8667 case -NFS4ERR_DELAY
:
8668 if (nfs4_async_handle_error(task
, server
, NULL
, NULL
) != -EAGAIN
)
8670 nfs4_sequence_free_slot(&lrp
->res
.seq_res
);
8671 rpc_restart_call_prepare(task
);
8674 dprintk("<-- %s\n", __func__
);
8677 static void nfs4_layoutreturn_release(void *calldata
)
8679 struct nfs4_layoutreturn
*lrp
= calldata
;
8680 struct pnfs_layout_hdr
*lo
= lrp
->args
.layout
;
8682 dprintk("--> %s\n", __func__
);
8683 pnfs_layoutreturn_free_lsegs(lo
, &lrp
->args
.stateid
, &lrp
->args
.range
,
8684 lrp
->res
.lrs_present
? &lrp
->res
.stateid
: NULL
);
8685 nfs4_sequence_free_slot(&lrp
->res
.seq_res
);
8686 if (lrp
->ld_private
.ops
&& lrp
->ld_private
.ops
->free
)
8687 lrp
->ld_private
.ops
->free(&lrp
->ld_private
);
8688 pnfs_put_layout_hdr(lrp
->args
.layout
);
8689 nfs_iput_and_deactive(lrp
->inode
);
8691 dprintk("<-- %s\n", __func__
);
8694 static const struct rpc_call_ops nfs4_layoutreturn_call_ops
= {
8695 .rpc_call_prepare
= nfs4_layoutreturn_prepare
,
8696 .rpc_call_done
= nfs4_layoutreturn_done
,
8697 .rpc_release
= nfs4_layoutreturn_release
,
8700 int nfs4_proc_layoutreturn(struct nfs4_layoutreturn
*lrp
, bool sync
)
8702 struct rpc_task
*task
;
8703 struct rpc_message msg
= {
8704 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LAYOUTRETURN
],
8705 .rpc_argp
= &lrp
->args
,
8706 .rpc_resp
= &lrp
->res
,
8707 .rpc_cred
= lrp
->cred
,
8709 struct rpc_task_setup task_setup_data
= {
8710 .rpc_client
= NFS_SERVER(lrp
->args
.inode
)->client
,
8711 .rpc_message
= &msg
,
8712 .callback_ops
= &nfs4_layoutreturn_call_ops
,
8713 .callback_data
= lrp
,
8717 nfs4_state_protect(NFS_SERVER(lrp
->args
.inode
)->nfs_client
,
8718 NFS_SP4_MACH_CRED_PNFS_CLEANUP
,
8719 &task_setup_data
.rpc_client
, &msg
);
8721 dprintk("--> %s\n", __func__
);
8723 lrp
->inode
= nfs_igrab_and_active(lrp
->args
.inode
);
8725 nfs4_layoutreturn_release(lrp
);
8728 task_setup_data
.flags
|= RPC_TASK_ASYNC
;
8730 nfs4_init_sequence(&lrp
->args
.seq_args
, &lrp
->res
.seq_res
, 1);
8731 task
= rpc_run_task(&task_setup_data
);
8733 return PTR_ERR(task
);
8735 status
= task
->tk_status
;
8736 trace_nfs4_layoutreturn(lrp
->args
.inode
, &lrp
->args
.stateid
, status
);
8737 dprintk("<-- %s status=%d\n", __func__
, status
);
8743 _nfs4_proc_getdeviceinfo(struct nfs_server
*server
,
8744 struct pnfs_device
*pdev
,
8745 struct rpc_cred
*cred
)
8747 struct nfs4_getdeviceinfo_args args
= {
8749 .notify_types
= NOTIFY_DEVICEID4_CHANGE
|
8750 NOTIFY_DEVICEID4_DELETE
,
8752 struct nfs4_getdeviceinfo_res res
= {
8755 struct rpc_message msg
= {
8756 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GETDEVICEINFO
],
8763 dprintk("--> %s\n", __func__
);
8764 status
= nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
8765 if (res
.notification
& ~args
.notify_types
)
8766 dprintk("%s: unsupported notification\n", __func__
);
8767 if (res
.notification
!= args
.notify_types
)
8770 dprintk("<-- %s status=%d\n", __func__
, status
);
8775 int nfs4_proc_getdeviceinfo(struct nfs_server
*server
,
8776 struct pnfs_device
*pdev
,
8777 struct rpc_cred
*cred
)
8779 struct nfs4_exception exception
= { };
8783 err
= nfs4_handle_exception(server
,
8784 _nfs4_proc_getdeviceinfo(server
, pdev
, cred
),
8786 } while (exception
.retry
);
8789 EXPORT_SYMBOL_GPL(nfs4_proc_getdeviceinfo
);
8791 static void nfs4_layoutcommit_prepare(struct rpc_task
*task
, void *calldata
)
8793 struct nfs4_layoutcommit_data
*data
= calldata
;
8794 struct nfs_server
*server
= NFS_SERVER(data
->args
.inode
);
8795 struct nfs4_session
*session
= nfs4_get_session(server
);
8797 nfs41_setup_sequence(session
,
8798 &data
->args
.seq_args
,
8804 nfs4_layoutcommit_done(struct rpc_task
*task
, void *calldata
)
8806 struct nfs4_layoutcommit_data
*data
= calldata
;
8807 struct nfs_server
*server
= NFS_SERVER(data
->args
.inode
);
8809 if (!nfs41_sequence_done(task
, &data
->res
.seq_res
))
8812 switch (task
->tk_status
) { /* Just ignore these failures */
8813 case -NFS4ERR_DELEG_REVOKED
: /* layout was recalled */
8814 case -NFS4ERR_BADIOMODE
: /* no IOMODE_RW layout for range */
8815 case -NFS4ERR_BADLAYOUT
: /* no layout */
8816 case -NFS4ERR_GRACE
: /* loca_recalim always false */
8817 task
->tk_status
= 0;
8821 if (nfs4_async_handle_error(task
, server
, NULL
, NULL
) == -EAGAIN
) {
8822 rpc_restart_call_prepare(task
);
8828 static void nfs4_layoutcommit_release(void *calldata
)
8830 struct nfs4_layoutcommit_data
*data
= calldata
;
8832 pnfs_cleanup_layoutcommit(data
);
8833 nfs_post_op_update_inode_force_wcc(data
->args
.inode
,
8835 put_rpccred(data
->cred
);
8836 nfs_iput_and_deactive(data
->inode
);
8840 static const struct rpc_call_ops nfs4_layoutcommit_ops
= {
8841 .rpc_call_prepare
= nfs4_layoutcommit_prepare
,
8842 .rpc_call_done
= nfs4_layoutcommit_done
,
8843 .rpc_release
= nfs4_layoutcommit_release
,
8847 nfs4_proc_layoutcommit(struct nfs4_layoutcommit_data
*data
, bool sync
)
8849 struct rpc_message msg
= {
8850 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LAYOUTCOMMIT
],
8851 .rpc_argp
= &data
->args
,
8852 .rpc_resp
= &data
->res
,
8853 .rpc_cred
= data
->cred
,
8855 struct rpc_task_setup task_setup_data
= {
8856 .task
= &data
->task
,
8857 .rpc_client
= NFS_CLIENT(data
->args
.inode
),
8858 .rpc_message
= &msg
,
8859 .callback_ops
= &nfs4_layoutcommit_ops
,
8860 .callback_data
= data
,
8862 struct rpc_task
*task
;
8865 dprintk("NFS: initiating layoutcommit call. sync %d "
8866 "lbw: %llu inode %lu\n", sync
,
8867 data
->args
.lastbytewritten
,
8868 data
->args
.inode
->i_ino
);
8871 data
->inode
= nfs_igrab_and_active(data
->args
.inode
);
8872 if (data
->inode
== NULL
) {
8873 nfs4_layoutcommit_release(data
);
8876 task_setup_data
.flags
= RPC_TASK_ASYNC
;
8878 nfs4_init_sequence(&data
->args
.seq_args
, &data
->res
.seq_res
, 1);
8879 task
= rpc_run_task(&task_setup_data
);
8881 return PTR_ERR(task
);
8883 status
= task
->tk_status
;
8884 trace_nfs4_layoutcommit(data
->args
.inode
, &data
->args
.stateid
, status
);
8885 dprintk("%s: status %d\n", __func__
, status
);
8891 * Use the state managment nfs_client cl_rpcclient, which uses krb5i (if
8892 * possible) as per RFC3530bis and RFC5661 Security Considerations sections
8895 _nfs41_proc_secinfo_no_name(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
8896 struct nfs_fsinfo
*info
,
8897 struct nfs4_secinfo_flavors
*flavors
, bool use_integrity
)
8899 struct nfs41_secinfo_no_name_args args
= {
8900 .style
= SECINFO_STYLE_CURRENT_FH
,
8902 struct nfs4_secinfo_res res
= {
8905 struct rpc_message msg
= {
8906 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SECINFO_NO_NAME
],
8910 struct rpc_clnt
*clnt
= server
->client
;
8911 struct rpc_cred
*cred
= NULL
;
8914 if (use_integrity
) {
8915 clnt
= server
->nfs_client
->cl_rpcclient
;
8916 cred
= nfs4_get_clid_cred(server
->nfs_client
);
8917 msg
.rpc_cred
= cred
;
8920 dprintk("--> %s\n", __func__
);
8921 status
= nfs4_call_sync(clnt
, server
, &msg
, &args
.seq_args
,
8923 dprintk("<-- %s status=%d\n", __func__
, status
);
8932 nfs41_proc_secinfo_no_name(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
8933 struct nfs_fsinfo
*info
, struct nfs4_secinfo_flavors
*flavors
)
8935 struct nfs4_exception exception
= { };
8938 /* first try using integrity protection */
8939 err
= -NFS4ERR_WRONGSEC
;
8941 /* try to use integrity protection with machine cred */
8942 if (_nfs4_is_integrity_protected(server
->nfs_client
))
8943 err
= _nfs41_proc_secinfo_no_name(server
, fhandle
, info
,
8947 * if unable to use integrity protection, or SECINFO with
8948 * integrity protection returns NFS4ERR_WRONGSEC (which is
8949 * disallowed by spec, but exists in deployed servers) use
8950 * the current filesystem's rpc_client and the user cred.
8952 if (err
== -NFS4ERR_WRONGSEC
)
8953 err
= _nfs41_proc_secinfo_no_name(server
, fhandle
, info
,
8958 case -NFS4ERR_WRONGSEC
:
8962 err
= nfs4_handle_exception(server
, err
, &exception
);
8964 } while (exception
.retry
);
8970 nfs41_find_root_sec(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
8971 struct nfs_fsinfo
*info
)
8975 rpc_authflavor_t flavor
= RPC_AUTH_MAXFLAVOR
;
8976 struct nfs4_secinfo_flavors
*flavors
;
8977 struct nfs4_secinfo4
*secinfo
;
8980 page
= alloc_page(GFP_KERNEL
);
8986 flavors
= page_address(page
);
8987 err
= nfs41_proc_secinfo_no_name(server
, fhandle
, info
, flavors
);
8990 * Fall back on "guess and check" method if
8991 * the server doesn't support SECINFO_NO_NAME
8993 if (err
== -NFS4ERR_WRONGSEC
|| err
== -ENOTSUPP
) {
8994 err
= nfs4_find_root_sec(server
, fhandle
, info
);
9000 for (i
= 0; i
< flavors
->num_flavors
; i
++) {
9001 secinfo
= &flavors
->flavors
[i
];
9003 switch (secinfo
->flavor
) {
9007 flavor
= rpcauth_get_pseudoflavor(secinfo
->flavor
,
9008 &secinfo
->flavor_info
);
9011 flavor
= RPC_AUTH_MAXFLAVOR
;
9015 if (!nfs_auth_info_match(&server
->auth_info
, flavor
))
9016 flavor
= RPC_AUTH_MAXFLAVOR
;
9018 if (flavor
!= RPC_AUTH_MAXFLAVOR
) {
9019 err
= nfs4_lookup_root_sec(server
, fhandle
,
9026 if (flavor
== RPC_AUTH_MAXFLAVOR
)
9037 static int _nfs41_test_stateid(struct nfs_server
*server
,
9038 nfs4_stateid
*stateid
,
9039 struct rpc_cred
*cred
)
9042 struct nfs41_test_stateid_args args
= {
9045 struct nfs41_test_stateid_res res
;
9046 struct rpc_message msg
= {
9047 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_TEST_STATEID
],
9052 struct rpc_clnt
*rpc_client
= server
->client
;
9054 nfs4_state_protect(server
->nfs_client
, NFS_SP4_MACH_CRED_STATEID
,
9057 dprintk("NFS call test_stateid %p\n", stateid
);
9058 nfs4_init_sequence(&args
.seq_args
, &res
.seq_res
, 0);
9059 nfs4_set_sequence_privileged(&args
.seq_args
);
9060 status
= nfs4_call_sync_sequence(rpc_client
, server
, &msg
,
9061 &args
.seq_args
, &res
.seq_res
);
9062 if (status
!= NFS_OK
) {
9063 dprintk("NFS reply test_stateid: failed, %d\n", status
);
9066 dprintk("NFS reply test_stateid: succeeded, %d\n", -res
.status
);
9070 static void nfs4_handle_delay_or_session_error(struct nfs_server
*server
,
9071 int err
, struct nfs4_exception
*exception
)
9073 exception
->retry
= 0;
9075 case -NFS4ERR_DELAY
:
9076 case -NFS4ERR_RETRY_UNCACHED_REP
:
9077 nfs4_handle_exception(server
, err
, exception
);
9079 case -NFS4ERR_BADSESSION
:
9080 case -NFS4ERR_BADSLOT
:
9081 case -NFS4ERR_BAD_HIGH_SLOT
:
9082 case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION
:
9083 case -NFS4ERR_DEADSESSION
:
9084 nfs4_do_handle_exception(server
, err
, exception
);
9089 * nfs41_test_stateid - perform a TEST_STATEID operation
9091 * @server: server / transport on which to perform the operation
9092 * @stateid: state ID to test
9095 * Returns NFS_OK if the server recognizes that "stateid" is valid.
9096 * Otherwise a negative NFS4ERR value is returned if the operation
9097 * failed or the state ID is not currently valid.
9099 static int nfs41_test_stateid(struct nfs_server
*server
,
9100 nfs4_stateid
*stateid
,
9101 struct rpc_cred
*cred
)
9103 struct nfs4_exception exception
= { };
9106 err
= _nfs41_test_stateid(server
, stateid
, cred
);
9107 nfs4_handle_delay_or_session_error(server
, err
, &exception
);
9108 } while (exception
.retry
);
9112 struct nfs_free_stateid_data
{
9113 struct nfs_server
*server
;
9114 struct nfs41_free_stateid_args args
;
9115 struct nfs41_free_stateid_res res
;
9118 static void nfs41_free_stateid_prepare(struct rpc_task
*task
, void *calldata
)
9120 struct nfs_free_stateid_data
*data
= calldata
;
9121 nfs41_setup_sequence(nfs4_get_session(data
->server
),
9122 &data
->args
.seq_args
,
9127 static void nfs41_free_stateid_done(struct rpc_task
*task
, void *calldata
)
9129 struct nfs_free_stateid_data
*data
= calldata
;
9131 nfs41_sequence_done(task
, &data
->res
.seq_res
);
9133 switch (task
->tk_status
) {
9134 case -NFS4ERR_DELAY
:
9135 if (nfs4_async_handle_error(task
, data
->server
, NULL
, NULL
) == -EAGAIN
)
9136 rpc_restart_call_prepare(task
);
9140 static void nfs41_free_stateid_release(void *calldata
)
9145 static const struct rpc_call_ops nfs41_free_stateid_ops
= {
9146 .rpc_call_prepare
= nfs41_free_stateid_prepare
,
9147 .rpc_call_done
= nfs41_free_stateid_done
,
9148 .rpc_release
= nfs41_free_stateid_release
,
9151 static struct rpc_task
*_nfs41_free_stateid(struct nfs_server
*server
,
9152 const nfs4_stateid
*stateid
,
9153 struct rpc_cred
*cred
,
9156 struct rpc_message msg
= {
9157 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_FREE_STATEID
],
9160 struct rpc_task_setup task_setup
= {
9161 .rpc_client
= server
->client
,
9162 .rpc_message
= &msg
,
9163 .callback_ops
= &nfs41_free_stateid_ops
,
9164 .flags
= RPC_TASK_ASYNC
,
9166 struct nfs_free_stateid_data
*data
;
9168 nfs4_state_protect(server
->nfs_client
, NFS_SP4_MACH_CRED_STATEID
,
9169 &task_setup
.rpc_client
, &msg
);
9171 dprintk("NFS call free_stateid %p\n", stateid
);
9172 data
= kmalloc(sizeof(*data
), GFP_NOFS
);
9174 return ERR_PTR(-ENOMEM
);
9175 data
->server
= server
;
9176 nfs4_stateid_copy(&data
->args
.stateid
, stateid
);
9178 task_setup
.callback_data
= data
;
9180 msg
.rpc_argp
= &data
->args
;
9181 msg
.rpc_resp
= &data
->res
;
9182 nfs4_init_sequence(&data
->args
.seq_args
, &data
->res
.seq_res
, 1);
9184 nfs4_set_sequence_privileged(&data
->args
.seq_args
);
9186 return rpc_run_task(&task_setup
);
9190 * nfs41_free_stateid - perform a FREE_STATEID operation
9192 * @server: server / transport on which to perform the operation
9193 * @stateid: state ID to release
9195 * @is_recovery: set to true if this call needs to be privileged
9197 * Note: this function is always asynchronous.
9199 static int nfs41_free_stateid(struct nfs_server
*server
,
9200 const nfs4_stateid
*stateid
,
9201 struct rpc_cred
*cred
,
9204 struct rpc_task
*task
;
9206 task
= _nfs41_free_stateid(server
, stateid
, cred
, is_recovery
);
9208 return PTR_ERR(task
);
9214 nfs41_free_lock_state(struct nfs_server
*server
, struct nfs4_lock_state
*lsp
)
9216 struct rpc_cred
*cred
= lsp
->ls_state
->owner
->so_cred
;
9218 nfs41_free_stateid(server
, &lsp
->ls_stateid
, cred
, false);
9219 nfs4_free_lock_state(server
, lsp
);
9222 static bool nfs41_match_stateid(const nfs4_stateid
*s1
,
9223 const nfs4_stateid
*s2
)
9225 if (s1
->type
!= s2
->type
)
9228 if (memcmp(s1
->other
, s2
->other
, sizeof(s1
->other
)) != 0)
9231 if (s1
->seqid
== s2
->seqid
)
9233 if (s1
->seqid
== 0 || s2
->seqid
== 0)
9239 #endif /* CONFIG_NFS_V4_1 */
9241 static bool nfs4_match_stateid(const nfs4_stateid
*s1
,
9242 const nfs4_stateid
*s2
)
9244 return nfs4_stateid_match(s1
, s2
);
9248 static const struct nfs4_state_recovery_ops nfs40_reboot_recovery_ops
= {
9249 .owner_flag_bit
= NFS_OWNER_RECLAIM_REBOOT
,
9250 .state_flag_bit
= NFS_STATE_RECLAIM_REBOOT
,
9251 .recover_open
= nfs4_open_reclaim
,
9252 .recover_lock
= nfs4_lock_reclaim
,
9253 .establish_clid
= nfs4_init_clientid
,
9254 .detect_trunking
= nfs40_discover_server_trunking
,
9257 #if defined(CONFIG_NFS_V4_1)
9258 static const struct nfs4_state_recovery_ops nfs41_reboot_recovery_ops
= {
9259 .owner_flag_bit
= NFS_OWNER_RECLAIM_REBOOT
,
9260 .state_flag_bit
= NFS_STATE_RECLAIM_REBOOT
,
9261 .recover_open
= nfs4_open_reclaim
,
9262 .recover_lock
= nfs4_lock_reclaim
,
9263 .establish_clid
= nfs41_init_clientid
,
9264 .reclaim_complete
= nfs41_proc_reclaim_complete
,
9265 .detect_trunking
= nfs41_discover_server_trunking
,
9267 #endif /* CONFIG_NFS_V4_1 */
9269 static const struct nfs4_state_recovery_ops nfs40_nograce_recovery_ops
= {
9270 .owner_flag_bit
= NFS_OWNER_RECLAIM_NOGRACE
,
9271 .state_flag_bit
= NFS_STATE_RECLAIM_NOGRACE
,
9272 .recover_open
= nfs40_open_expired
,
9273 .recover_lock
= nfs4_lock_expired
,
9274 .establish_clid
= nfs4_init_clientid
,
9277 #if defined(CONFIG_NFS_V4_1)
9278 static const struct nfs4_state_recovery_ops nfs41_nograce_recovery_ops
= {
9279 .owner_flag_bit
= NFS_OWNER_RECLAIM_NOGRACE
,
9280 .state_flag_bit
= NFS_STATE_RECLAIM_NOGRACE
,
9281 .recover_open
= nfs41_open_expired
,
9282 .recover_lock
= nfs41_lock_expired
,
9283 .establish_clid
= nfs41_init_clientid
,
9285 #endif /* CONFIG_NFS_V4_1 */
9287 static const struct nfs4_state_maintenance_ops nfs40_state_renewal_ops
= {
9288 .sched_state_renewal
= nfs4_proc_async_renew
,
9289 .get_state_renewal_cred_locked
= nfs4_get_renew_cred_locked
,
9290 .renew_lease
= nfs4_proc_renew
,
9293 #if defined(CONFIG_NFS_V4_1)
9294 static const struct nfs4_state_maintenance_ops nfs41_state_renewal_ops
= {
9295 .sched_state_renewal
= nfs41_proc_async_sequence
,
9296 .get_state_renewal_cred_locked
= nfs4_get_machine_cred_locked
,
9297 .renew_lease
= nfs4_proc_sequence
,
9301 static const struct nfs4_mig_recovery_ops nfs40_mig_recovery_ops
= {
9302 .get_locations
= _nfs40_proc_get_locations
,
9303 .fsid_present
= _nfs40_proc_fsid_present
,
9306 #if defined(CONFIG_NFS_V4_1)
9307 static const struct nfs4_mig_recovery_ops nfs41_mig_recovery_ops
= {
9308 .get_locations
= _nfs41_proc_get_locations
,
9309 .fsid_present
= _nfs41_proc_fsid_present
,
9311 #endif /* CONFIG_NFS_V4_1 */
9313 static const struct nfs4_minor_version_ops nfs_v4_0_minor_ops
= {
9315 .init_caps
= NFS_CAP_READDIRPLUS
9316 | NFS_CAP_ATOMIC_OPEN
9317 | NFS_CAP_POSIX_LOCK
,
9318 .init_client
= nfs40_init_client
,
9319 .shutdown_client
= nfs40_shutdown_client
,
9320 .match_stateid
= nfs4_match_stateid
,
9321 .find_root_sec
= nfs4_find_root_sec
,
9322 .free_lock_state
= nfs4_release_lockowner
,
9323 .test_and_free_expired
= nfs40_test_and_free_expired_stateid
,
9324 .alloc_seqid
= nfs_alloc_seqid
,
9325 .call_sync_ops
= &nfs40_call_sync_ops
,
9326 .reboot_recovery_ops
= &nfs40_reboot_recovery_ops
,
9327 .nograce_recovery_ops
= &nfs40_nograce_recovery_ops
,
9328 .state_renewal_ops
= &nfs40_state_renewal_ops
,
9329 .mig_recovery_ops
= &nfs40_mig_recovery_ops
,
9332 #if defined(CONFIG_NFS_V4_1)
9333 static struct nfs_seqid
*
9334 nfs_alloc_no_seqid(struct nfs_seqid_counter
*arg1
, gfp_t arg2
)
9339 static const struct nfs4_minor_version_ops nfs_v4_1_minor_ops
= {
9341 .init_caps
= NFS_CAP_READDIRPLUS
9342 | NFS_CAP_ATOMIC_OPEN
9343 | NFS_CAP_POSIX_LOCK
9344 | NFS_CAP_STATEID_NFSV41
9345 | NFS_CAP_ATOMIC_OPEN_V1
,
9346 .init_client
= nfs41_init_client
,
9347 .shutdown_client
= nfs41_shutdown_client
,
9348 .match_stateid
= nfs41_match_stateid
,
9349 .find_root_sec
= nfs41_find_root_sec
,
9350 .free_lock_state
= nfs41_free_lock_state
,
9351 .test_and_free_expired
= nfs41_test_and_free_expired_stateid
,
9352 .alloc_seqid
= nfs_alloc_no_seqid
,
9353 .session_trunk
= nfs4_test_session_trunk
,
9354 .call_sync_ops
= &nfs41_call_sync_ops
,
9355 .reboot_recovery_ops
= &nfs41_reboot_recovery_ops
,
9356 .nograce_recovery_ops
= &nfs41_nograce_recovery_ops
,
9357 .state_renewal_ops
= &nfs41_state_renewal_ops
,
9358 .mig_recovery_ops
= &nfs41_mig_recovery_ops
,
9362 #if defined(CONFIG_NFS_V4_2)
9363 static const struct nfs4_minor_version_ops nfs_v4_2_minor_ops
= {
9365 .init_caps
= NFS_CAP_READDIRPLUS
9366 | NFS_CAP_ATOMIC_OPEN
9367 | NFS_CAP_POSIX_LOCK
9368 | NFS_CAP_STATEID_NFSV41
9369 | NFS_CAP_ATOMIC_OPEN_V1
9372 | NFS_CAP_DEALLOCATE
9374 | NFS_CAP_LAYOUTSTATS
9376 .init_client
= nfs41_init_client
,
9377 .shutdown_client
= nfs41_shutdown_client
,
9378 .match_stateid
= nfs41_match_stateid
,
9379 .find_root_sec
= nfs41_find_root_sec
,
9380 .free_lock_state
= nfs41_free_lock_state
,
9381 .call_sync_ops
= &nfs41_call_sync_ops
,
9382 .test_and_free_expired
= nfs41_test_and_free_expired_stateid
,
9383 .alloc_seqid
= nfs_alloc_no_seqid
,
9384 .session_trunk
= nfs4_test_session_trunk
,
9385 .reboot_recovery_ops
= &nfs41_reboot_recovery_ops
,
9386 .nograce_recovery_ops
= &nfs41_nograce_recovery_ops
,
9387 .state_renewal_ops
= &nfs41_state_renewal_ops
,
9388 .mig_recovery_ops
= &nfs41_mig_recovery_ops
,
9392 const struct nfs4_minor_version_ops
*nfs_v4_minor_ops
[] = {
9393 [0] = &nfs_v4_0_minor_ops
,
9394 #if defined(CONFIG_NFS_V4_1)
9395 [1] = &nfs_v4_1_minor_ops
,
9397 #if defined(CONFIG_NFS_V4_2)
9398 [2] = &nfs_v4_2_minor_ops
,
9402 static ssize_t
nfs4_listxattr(struct dentry
*dentry
, char *list
, size_t size
)
9404 ssize_t error
, error2
;
9406 error
= generic_listxattr(dentry
, list
, size
);
9414 error2
= nfs4_listxattr_nfs4_label(d_inode(dentry
), list
, size
);
9417 return error
+ error2
;
9420 static const struct inode_operations nfs4_dir_inode_operations
= {
9421 .create
= nfs_create
,
9422 .lookup
= nfs_lookup
,
9423 .atomic_open
= nfs_atomic_open
,
9425 .unlink
= nfs_unlink
,
9426 .symlink
= nfs_symlink
,
9430 .rename
= nfs_rename
,
9431 .permission
= nfs_permission
,
9432 .getattr
= nfs_getattr
,
9433 .setattr
= nfs_setattr
,
9434 .listxattr
= nfs4_listxattr
,
9437 static const struct inode_operations nfs4_file_inode_operations
= {
9438 .permission
= nfs_permission
,
9439 .getattr
= nfs_getattr
,
9440 .setattr
= nfs_setattr
,
9441 .listxattr
= nfs4_listxattr
,
9444 const struct nfs_rpc_ops nfs_v4_clientops
= {
9445 .version
= 4, /* protocol version */
9446 .dentry_ops
= &nfs4_dentry_operations
,
9447 .dir_inode_ops
= &nfs4_dir_inode_operations
,
9448 .file_inode_ops
= &nfs4_file_inode_operations
,
9449 .file_ops
= &nfs4_file_operations
,
9450 .getroot
= nfs4_proc_get_root
,
9451 .submount
= nfs4_submount
,
9452 .try_mount
= nfs4_try_mount
,
9453 .getattr
= nfs4_proc_getattr
,
9454 .setattr
= nfs4_proc_setattr
,
9455 .lookup
= nfs4_proc_lookup
,
9456 .access
= nfs4_proc_access
,
9457 .readlink
= nfs4_proc_readlink
,
9458 .create
= nfs4_proc_create
,
9459 .remove
= nfs4_proc_remove
,
9460 .unlink_setup
= nfs4_proc_unlink_setup
,
9461 .unlink_rpc_prepare
= nfs4_proc_unlink_rpc_prepare
,
9462 .unlink_done
= nfs4_proc_unlink_done
,
9463 .rename_setup
= nfs4_proc_rename_setup
,
9464 .rename_rpc_prepare
= nfs4_proc_rename_rpc_prepare
,
9465 .rename_done
= nfs4_proc_rename_done
,
9466 .link
= nfs4_proc_link
,
9467 .symlink
= nfs4_proc_symlink
,
9468 .mkdir
= nfs4_proc_mkdir
,
9469 .rmdir
= nfs4_proc_remove
,
9470 .readdir
= nfs4_proc_readdir
,
9471 .mknod
= nfs4_proc_mknod
,
9472 .statfs
= nfs4_proc_statfs
,
9473 .fsinfo
= nfs4_proc_fsinfo
,
9474 .pathconf
= nfs4_proc_pathconf
,
9475 .set_capabilities
= nfs4_server_capabilities
,
9476 .decode_dirent
= nfs4_decode_dirent
,
9477 .pgio_rpc_prepare
= nfs4_proc_pgio_rpc_prepare
,
9478 .read_setup
= nfs4_proc_read_setup
,
9479 .read_done
= nfs4_read_done
,
9480 .write_setup
= nfs4_proc_write_setup
,
9481 .write_done
= nfs4_write_done
,
9482 .commit_setup
= nfs4_proc_commit_setup
,
9483 .commit_rpc_prepare
= nfs4_proc_commit_rpc_prepare
,
9484 .commit_done
= nfs4_commit_done
,
9485 .lock
= nfs4_proc_lock
,
9486 .clear_acl_cache
= nfs4_zap_acl_attr
,
9487 .close_context
= nfs4_close_context
,
9488 .open_context
= nfs4_atomic_open
,
9489 .have_delegation
= nfs4_have_delegation
,
9490 .return_delegation
= nfs4_inode_return_delegation
,
9491 .alloc_client
= nfs4_alloc_client
,
9492 .init_client
= nfs4_init_client
,
9493 .free_client
= nfs4_free_client
,
9494 .create_server
= nfs4_create_server
,
9495 .clone_server
= nfs_clone_server
,
9498 static const struct xattr_handler nfs4_xattr_nfs4_acl_handler
= {
9499 .name
= XATTR_NAME_NFSV4_ACL
,
9500 .list
= nfs4_xattr_list_nfs4_acl
,
9501 .get
= nfs4_xattr_get_nfs4_acl
,
9502 .set
= nfs4_xattr_set_nfs4_acl
,
9505 const struct xattr_handler
*nfs4_xattr_handlers
[] = {
9506 &nfs4_xattr_nfs4_acl_handler
,
9507 #ifdef CONFIG_NFS_V4_SECURITY_LABEL
9508 &nfs4_xattr_nfs4_label_handler
,