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 (opendata
->o_arg
.createmode
!= NFS4_CREATE_EXCLUSIVE
&&
2704 attrset
[1] & FATTR4_WORD1_MODE
)
2705 sattr
->ia_valid
&= ~ATTR_MODE
;
2707 if (attrset
[2] & FATTR4_WORD2_SECURITY_LABEL
)
2711 static int _nfs4_open_and_get_state(struct nfs4_opendata
*opendata
,
2714 struct nfs_open_context
*ctx
)
2716 struct nfs4_state_owner
*sp
= opendata
->owner
;
2717 struct nfs_server
*server
= sp
->so_server
;
2718 struct dentry
*dentry
;
2719 struct nfs4_state
*state
;
2723 seq
= raw_seqcount_begin(&sp
->so_reclaim_seqcount
);
2725 ret
= _nfs4_proc_open(opendata
);
2729 state
= nfs4_opendata_to_nfs4_state(opendata
);
2730 ret
= PTR_ERR(state
);
2733 if (server
->caps
& NFS_CAP_POSIX_LOCK
)
2734 set_bit(NFS_STATE_POSIX_LOCKS
, &state
->flags
);
2735 if (opendata
->o_res
.rflags
& NFS4_OPEN_RESULT_MAY_NOTIFY_LOCK
)
2736 set_bit(NFS_STATE_MAY_NOTIFY_LOCK
, &state
->flags
);
2738 dentry
= opendata
->dentry
;
2739 if (d_really_is_negative(dentry
)) {
2740 struct dentry
*alias
;
2742 alias
= d_exact_alias(dentry
, state
->inode
);
2744 alias
= d_splice_alias(igrab(state
->inode
), dentry
);
2745 /* d_splice_alias() can't fail here - it's a non-directory */
2748 ctx
->dentry
= dentry
= alias
;
2750 nfs_set_verifier(dentry
,
2751 nfs_save_change_attribute(d_inode(opendata
->dir
)));
2754 ret
= nfs4_opendata_access(sp
->so_cred
, opendata
, state
, fmode
, flags
);
2759 if (d_inode(dentry
) == state
->inode
) {
2760 nfs_inode_attach_open_context(ctx
);
2761 if (read_seqcount_retry(&sp
->so_reclaim_seqcount
, seq
))
2762 nfs4_schedule_stateid_recovery(server
, state
);
2769 * Returns a referenced nfs4_state
2771 static int _nfs4_do_open(struct inode
*dir
,
2772 struct nfs_open_context
*ctx
,
2774 struct iattr
*sattr
,
2775 struct nfs4_label
*label
,
2778 struct nfs4_state_owner
*sp
;
2779 struct nfs4_state
*state
= NULL
;
2780 struct nfs_server
*server
= NFS_SERVER(dir
);
2781 struct nfs4_opendata
*opendata
;
2782 struct dentry
*dentry
= ctx
->dentry
;
2783 struct rpc_cred
*cred
= ctx
->cred
;
2784 struct nfs4_threshold
**ctx_th
= &ctx
->mdsthreshold
;
2785 fmode_t fmode
= ctx
->mode
& (FMODE_READ
|FMODE_WRITE
|FMODE_EXEC
);
2786 enum open_claim_type4 claim
= NFS4_OPEN_CLAIM_NULL
;
2787 struct nfs4_label
*olabel
= NULL
;
2790 /* Protect against reboot recovery conflicts */
2792 sp
= nfs4_get_state_owner(server
, cred
, GFP_KERNEL
);
2794 dprintk("nfs4_do_open: nfs4_get_state_owner failed!\n");
2797 status
= nfs4_recover_expired_lease(server
);
2799 goto err_put_state_owner
;
2800 if (d_really_is_positive(dentry
))
2801 nfs4_return_incompatible_delegation(d_inode(dentry
), fmode
);
2803 if (d_really_is_positive(dentry
))
2804 claim
= NFS4_OPEN_CLAIM_FH
;
2805 opendata
= nfs4_opendata_alloc(dentry
, sp
, fmode
, flags
, sattr
,
2806 label
, claim
, GFP_KERNEL
);
2807 if (opendata
== NULL
)
2808 goto err_put_state_owner
;
2811 olabel
= nfs4_label_alloc(server
, GFP_KERNEL
);
2812 if (IS_ERR(olabel
)) {
2813 status
= PTR_ERR(olabel
);
2814 goto err_opendata_put
;
2818 if (server
->attr_bitmask
[2] & FATTR4_WORD2_MDSTHRESHOLD
) {
2819 if (!opendata
->f_attr
.mdsthreshold
) {
2820 opendata
->f_attr
.mdsthreshold
= pnfs_mdsthreshold_alloc();
2821 if (!opendata
->f_attr
.mdsthreshold
)
2822 goto err_free_label
;
2824 opendata
->o_arg
.open_bitmap
= &nfs4_pnfs_open_bitmap
[0];
2826 if (d_really_is_positive(dentry
))
2827 opendata
->state
= nfs4_get_open_state(d_inode(dentry
), sp
);
2829 status
= _nfs4_open_and_get_state(opendata
, fmode
, flags
, ctx
);
2831 goto err_free_label
;
2834 if ((opendata
->o_arg
.open_flags
& (O_CREAT
|O_EXCL
)) == (O_CREAT
|O_EXCL
) &&
2835 (opendata
->o_arg
.createmode
!= NFS4_CREATE_GUARDED
)) {
2836 nfs4_exclusive_attrset(opendata
, sattr
, &label
);
2838 * send create attributes which was not set by open
2839 * with an extra setattr.
2841 if (sattr
->ia_valid
& NFS4_VALID_ATTRS
) {
2842 nfs_fattr_init(opendata
->o_res
.f_attr
);
2843 status
= nfs4_do_setattr(state
->inode
, cred
,
2844 opendata
->o_res
.f_attr
, sattr
,
2845 ctx
, label
, olabel
);
2847 nfs_setattr_update_inode(state
->inode
, sattr
,
2848 opendata
->o_res
.f_attr
);
2849 nfs_setsecurity(state
->inode
, opendata
->o_res
.f_attr
, olabel
);
2853 if (opened
&& opendata
->file_created
)
2854 *opened
|= FILE_CREATED
;
2856 if (pnfs_use_threshold(ctx_th
, opendata
->f_attr
.mdsthreshold
, server
)) {
2857 *ctx_th
= opendata
->f_attr
.mdsthreshold
;
2858 opendata
->f_attr
.mdsthreshold
= NULL
;
2861 nfs4_label_free(olabel
);
2863 nfs4_opendata_put(opendata
);
2864 nfs4_put_state_owner(sp
);
2867 nfs4_label_free(olabel
);
2869 nfs4_opendata_put(opendata
);
2870 err_put_state_owner
:
2871 nfs4_put_state_owner(sp
);
2877 static struct nfs4_state
*nfs4_do_open(struct inode
*dir
,
2878 struct nfs_open_context
*ctx
,
2880 struct iattr
*sattr
,
2881 struct nfs4_label
*label
,
2884 struct nfs_server
*server
= NFS_SERVER(dir
);
2885 struct nfs4_exception exception
= { };
2886 struct nfs4_state
*res
;
2890 status
= _nfs4_do_open(dir
, ctx
, flags
, sattr
, label
, opened
);
2892 trace_nfs4_open_file(ctx
, flags
, status
);
2895 /* NOTE: BAD_SEQID means the server and client disagree about the
2896 * book-keeping w.r.t. state-changing operations
2897 * (OPEN/CLOSE/LOCK/LOCKU...)
2898 * It is actually a sign of a bug on the client or on the server.
2900 * If we receive a BAD_SEQID error in the particular case of
2901 * doing an OPEN, we assume that nfs_increment_open_seqid() will
2902 * have unhashed the old state_owner for us, and that we can
2903 * therefore safely retry using a new one. We should still warn
2904 * the user though...
2906 if (status
== -NFS4ERR_BAD_SEQID
) {
2907 pr_warn_ratelimited("NFS: v4 server %s "
2908 " returned a bad sequence-id error!\n",
2909 NFS_SERVER(dir
)->nfs_client
->cl_hostname
);
2910 exception
.retry
= 1;
2914 * BAD_STATEID on OPEN means that the server cancelled our
2915 * state before it received the OPEN_CONFIRM.
2916 * Recover by retrying the request as per the discussion
2917 * on Page 181 of RFC3530.
2919 if (status
== -NFS4ERR_BAD_STATEID
) {
2920 exception
.retry
= 1;
2923 if (status
== -EAGAIN
) {
2924 /* We must have found a delegation */
2925 exception
.retry
= 1;
2928 if (nfs4_clear_cap_atomic_open_v1(server
, status
, &exception
))
2930 res
= ERR_PTR(nfs4_handle_exception(server
,
2931 status
, &exception
));
2932 } while (exception
.retry
);
2936 static int _nfs4_do_setattr(struct inode
*inode
,
2937 struct nfs_setattrargs
*arg
,
2938 struct nfs_setattrres
*res
,
2939 struct rpc_cred
*cred
,
2940 struct nfs_open_context
*ctx
)
2942 struct nfs_server
*server
= NFS_SERVER(inode
);
2943 struct rpc_message msg
= {
2944 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETATTR
],
2949 struct rpc_cred
*delegation_cred
= NULL
;
2950 unsigned long timestamp
= jiffies
;
2955 nfs_fattr_init(res
->fattr
);
2957 /* Servers should only apply open mode checks for file size changes */
2958 truncate
= (arg
->iap
->ia_valid
& ATTR_SIZE
) ? true : false;
2959 fmode
= truncate
? FMODE_WRITE
: FMODE_READ
;
2961 if (nfs4_copy_delegation_stateid(inode
, fmode
, &arg
->stateid
, &delegation_cred
)) {
2962 /* Use that stateid */
2963 } else if (truncate
&& ctx
!= NULL
) {
2964 struct nfs_lock_context
*l_ctx
;
2965 if (!nfs4_valid_open_stateid(ctx
->state
))
2967 l_ctx
= nfs_get_lock_context(ctx
);
2969 return PTR_ERR(l_ctx
);
2970 status
= nfs4_select_rw_stateid(ctx
->state
, FMODE_WRITE
, l_ctx
,
2971 &arg
->stateid
, &delegation_cred
);
2972 nfs_put_lock_context(l_ctx
);
2976 nfs4_stateid_copy(&arg
->stateid
, &zero_stateid
);
2977 if (delegation_cred
)
2978 msg
.rpc_cred
= delegation_cred
;
2980 status
= nfs4_call_sync(server
->client
, server
, &msg
, &arg
->seq_args
, &res
->seq_res
, 1);
2982 put_rpccred(delegation_cred
);
2983 if (status
== 0 && ctx
!= NULL
)
2984 renew_lease(server
, timestamp
);
2985 trace_nfs4_setattr(inode
, &arg
->stateid
, status
);
2989 static int nfs4_do_setattr(struct inode
*inode
, struct rpc_cred
*cred
,
2990 struct nfs_fattr
*fattr
, struct iattr
*sattr
,
2991 struct nfs_open_context
*ctx
, struct nfs4_label
*ilabel
,
2992 struct nfs4_label
*olabel
)
2994 struct nfs_server
*server
= NFS_SERVER(inode
);
2995 struct nfs4_state
*state
= ctx
? ctx
->state
: NULL
;
2996 struct nfs_setattrargs arg
= {
2997 .fh
= NFS_FH(inode
),
3000 .bitmask
= server
->attr_bitmask
,
3003 struct nfs_setattrres res
= {
3008 struct nfs4_exception exception
= {
3011 .stateid
= &arg
.stateid
,
3015 arg
.bitmask
= nfs4_bitmask(server
, ilabel
);
3017 arg
.bitmask
= nfs4_bitmask(server
, olabel
);
3020 err
= _nfs4_do_setattr(inode
, &arg
, &res
, cred
, ctx
);
3022 case -NFS4ERR_OPENMODE
:
3023 if (!(sattr
->ia_valid
& ATTR_SIZE
)) {
3024 pr_warn_once("NFSv4: server %s is incorrectly "
3025 "applying open mode checks to "
3026 "a SETATTR that is not "
3027 "changing file size.\n",
3028 server
->nfs_client
->cl_hostname
);
3030 if (state
&& !(state
->state
& FMODE_WRITE
)) {
3032 if (sattr
->ia_valid
& ATTR_OPEN
)
3037 err
= nfs4_handle_exception(server
, err
, &exception
);
3038 } while (exception
.retry
);
3044 nfs4_wait_on_layoutreturn(struct inode
*inode
, struct rpc_task
*task
)
3046 if (inode
== NULL
|| !nfs_have_layout(inode
))
3049 return pnfs_wait_on_layoutreturn(inode
, task
);
3052 struct nfs4_closedata
{
3053 struct inode
*inode
;
3054 struct nfs4_state
*state
;
3055 struct nfs_closeargs arg
;
3056 struct nfs_closeres res
;
3058 struct nfs4_layoutreturn_args arg
;
3059 struct nfs4_layoutreturn_res res
;
3060 struct nfs4_xdr_opaque_data ld_private
;
3064 struct nfs_fattr fattr
;
3065 unsigned long timestamp
;
3068 static void nfs4_free_closedata(void *data
)
3070 struct nfs4_closedata
*calldata
= data
;
3071 struct nfs4_state_owner
*sp
= calldata
->state
->owner
;
3072 struct super_block
*sb
= calldata
->state
->inode
->i_sb
;
3074 if (calldata
->lr
.roc
)
3075 pnfs_roc_release(&calldata
->lr
.arg
, &calldata
->lr
.res
,
3076 calldata
->res
.lr_ret
);
3077 nfs4_put_open_state(calldata
->state
);
3078 nfs_free_seqid(calldata
->arg
.seqid
);
3079 nfs4_put_state_owner(sp
);
3080 nfs_sb_deactive(sb
);
3084 static void nfs4_close_done(struct rpc_task
*task
, void *data
)
3086 struct nfs4_closedata
*calldata
= data
;
3087 struct nfs4_state
*state
= calldata
->state
;
3088 struct nfs_server
*server
= NFS_SERVER(calldata
->inode
);
3089 nfs4_stateid
*res_stateid
= NULL
;
3091 dprintk("%s: begin!\n", __func__
);
3092 if (!nfs4_sequence_done(task
, &calldata
->res
.seq_res
))
3094 trace_nfs4_close(state
, &calldata
->arg
, &calldata
->res
, task
->tk_status
);
3096 /* Handle Layoutreturn errors */
3097 if (calldata
->arg
.lr_args
&& task
->tk_status
!= 0) {
3098 switch (calldata
->res
.lr_ret
) {
3100 calldata
->res
.lr_ret
= -NFS4ERR_NOMATCHING_LAYOUT
;
3103 calldata
->arg
.lr_args
= NULL
;
3104 calldata
->res
.lr_res
= NULL
;
3106 case -NFS4ERR_ADMIN_REVOKED
:
3107 case -NFS4ERR_DELEG_REVOKED
:
3108 case -NFS4ERR_EXPIRED
:
3109 case -NFS4ERR_BAD_STATEID
:
3110 case -NFS4ERR_OLD_STATEID
:
3111 case -NFS4ERR_UNKNOWN_LAYOUTTYPE
:
3112 case -NFS4ERR_WRONG_CRED
:
3113 calldata
->arg
.lr_args
= NULL
;
3114 calldata
->res
.lr_res
= NULL
;
3115 calldata
->res
.lr_ret
= 0;
3116 rpc_restart_call_prepare(task
);
3121 /* hmm. we are done with the inode, and in the process of freeing
3122 * the state_owner. we keep this around to process errors
3124 switch (task
->tk_status
) {
3126 res_stateid
= &calldata
->res
.stateid
;
3127 renew_lease(server
, calldata
->timestamp
);
3129 case -NFS4ERR_ACCESS
:
3130 if (calldata
->arg
.bitmask
!= NULL
) {
3131 calldata
->arg
.bitmask
= NULL
;
3132 calldata
->res
.fattr
= NULL
;
3133 task
->tk_status
= 0;
3134 rpc_restart_call_prepare(task
);
3139 case -NFS4ERR_ADMIN_REVOKED
:
3140 case -NFS4ERR_STALE_STATEID
:
3141 case -NFS4ERR_EXPIRED
:
3142 nfs4_free_revoked_stateid(server
,
3143 &calldata
->arg
.stateid
,
3144 task
->tk_msg
.rpc_cred
);
3145 case -NFS4ERR_OLD_STATEID
:
3146 case -NFS4ERR_BAD_STATEID
:
3147 if (!nfs4_stateid_match(&calldata
->arg
.stateid
,
3148 &state
->open_stateid
)) {
3149 rpc_restart_call_prepare(task
);
3152 if (calldata
->arg
.fmode
== 0)
3155 if (nfs4_async_handle_error(task
, server
, state
, NULL
) == -EAGAIN
) {
3156 rpc_restart_call_prepare(task
);
3160 nfs_clear_open_stateid(state
, &calldata
->arg
.stateid
,
3161 res_stateid
, calldata
->arg
.fmode
);
3163 nfs_release_seqid(calldata
->arg
.seqid
);
3164 nfs_refresh_inode(calldata
->inode
, &calldata
->fattr
);
3165 dprintk("%s: done, ret = %d!\n", __func__
, task
->tk_status
);
3168 static void nfs4_close_prepare(struct rpc_task
*task
, void *data
)
3170 struct nfs4_closedata
*calldata
= data
;
3171 struct nfs4_state
*state
= calldata
->state
;
3172 struct inode
*inode
= calldata
->inode
;
3173 bool is_rdonly
, is_wronly
, is_rdwr
;
3176 dprintk("%s: begin!\n", __func__
);
3177 if (nfs_wait_on_sequence(calldata
->arg
.seqid
, task
) != 0)
3180 task
->tk_msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_OPEN_DOWNGRADE
];
3181 spin_lock(&state
->owner
->so_lock
);
3182 is_rdwr
= test_bit(NFS_O_RDWR_STATE
, &state
->flags
);
3183 is_rdonly
= test_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
3184 is_wronly
= test_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
3185 nfs4_stateid_copy(&calldata
->arg
.stateid
, &state
->open_stateid
);
3186 /* Calculate the change in open mode */
3187 calldata
->arg
.fmode
= 0;
3188 if (state
->n_rdwr
== 0) {
3189 if (state
->n_rdonly
== 0)
3190 call_close
|= is_rdonly
;
3192 calldata
->arg
.fmode
|= FMODE_READ
;
3193 if (state
->n_wronly
== 0)
3194 call_close
|= is_wronly
;
3196 calldata
->arg
.fmode
|= FMODE_WRITE
;
3197 if (calldata
->arg
.fmode
!= (FMODE_READ
|FMODE_WRITE
))
3198 call_close
|= is_rdwr
;
3200 calldata
->arg
.fmode
|= FMODE_READ
|FMODE_WRITE
;
3202 if (!nfs4_valid_open_stateid(state
) ||
3203 test_bit(NFS_OPEN_STATE
, &state
->flags
) == 0)
3205 spin_unlock(&state
->owner
->so_lock
);
3208 /* Note: exit _without_ calling nfs4_close_done */
3212 if (!calldata
->lr
.roc
&& nfs4_wait_on_layoutreturn(inode
, task
)) {
3213 nfs_release_seqid(calldata
->arg
.seqid
);
3217 if (calldata
->arg
.fmode
== 0)
3218 task
->tk_msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_CLOSE
];
3220 if (calldata
->arg
.fmode
== 0 || calldata
->arg
.fmode
== FMODE_READ
) {
3221 /* Close-to-open cache consistency revalidation */
3222 if (!nfs4_have_delegation(inode
, FMODE_READ
))
3223 calldata
->arg
.bitmask
= NFS_SERVER(inode
)->cache_consistency_bitmask
;
3225 calldata
->arg
.bitmask
= NULL
;
3228 calldata
->arg
.share_access
=
3229 nfs4_map_atomic_open_share(NFS_SERVER(inode
),
3230 calldata
->arg
.fmode
, 0);
3232 if (calldata
->res
.fattr
== NULL
)
3233 calldata
->arg
.bitmask
= NULL
;
3234 else if (calldata
->arg
.bitmask
== NULL
)
3235 calldata
->res
.fattr
= NULL
;
3236 calldata
->timestamp
= jiffies
;
3237 if (nfs4_setup_sequence(NFS_SERVER(inode
),
3238 &calldata
->arg
.seq_args
,
3239 &calldata
->res
.seq_res
,
3241 nfs_release_seqid(calldata
->arg
.seqid
);
3242 dprintk("%s: done!\n", __func__
);
3245 task
->tk_action
= NULL
;
3247 nfs4_sequence_done(task
, &calldata
->res
.seq_res
);
3250 static const struct rpc_call_ops nfs4_close_ops
= {
3251 .rpc_call_prepare
= nfs4_close_prepare
,
3252 .rpc_call_done
= nfs4_close_done
,
3253 .rpc_release
= nfs4_free_closedata
,
3257 * It is possible for data to be read/written from a mem-mapped file
3258 * after the sys_close call (which hits the vfs layer as a flush).
3259 * This means that we can't safely call nfsv4 close on a file until
3260 * the inode is cleared. This in turn means that we are not good
3261 * NFSv4 citizens - we do not indicate to the server to update the file's
3262 * share state even when we are done with one of the three share
3263 * stateid's in the inode.
3265 * NOTE: Caller must be holding the sp->so_owner semaphore!
3267 int nfs4_do_close(struct nfs4_state
*state
, gfp_t gfp_mask
, int wait
)
3269 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
3270 struct nfs_seqid
*(*alloc_seqid
)(struct nfs_seqid_counter
*, gfp_t
);
3271 struct nfs4_closedata
*calldata
;
3272 struct nfs4_state_owner
*sp
= state
->owner
;
3273 struct rpc_task
*task
;
3274 struct rpc_message msg
= {
3275 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_CLOSE
],
3276 .rpc_cred
= state
->owner
->so_cred
,
3278 struct rpc_task_setup task_setup_data
= {
3279 .rpc_client
= server
->client
,
3280 .rpc_message
= &msg
,
3281 .callback_ops
= &nfs4_close_ops
,
3282 .workqueue
= nfsiod_workqueue
,
3283 .flags
= RPC_TASK_ASYNC
,
3285 int status
= -ENOMEM
;
3287 nfs4_state_protect(server
->nfs_client
, NFS_SP4_MACH_CRED_CLEANUP
,
3288 &task_setup_data
.rpc_client
, &msg
);
3290 calldata
= kzalloc(sizeof(*calldata
), gfp_mask
);
3291 if (calldata
== NULL
)
3293 nfs4_init_sequence(&calldata
->arg
.seq_args
, &calldata
->res
.seq_res
, 1);
3294 calldata
->inode
= state
->inode
;
3295 calldata
->state
= state
;
3296 calldata
->arg
.fh
= NFS_FH(state
->inode
);
3297 /* Serialization for the sequence id */
3298 alloc_seqid
= server
->nfs_client
->cl_mvops
->alloc_seqid
;
3299 calldata
->arg
.seqid
= alloc_seqid(&state
->owner
->so_seqid
, gfp_mask
);
3300 if (IS_ERR(calldata
->arg
.seqid
))
3301 goto out_free_calldata
;
3302 nfs_fattr_init(&calldata
->fattr
);
3303 calldata
->arg
.fmode
= 0;
3304 calldata
->lr
.arg
.ld_private
= &calldata
->lr
.ld_private
;
3305 calldata
->res
.fattr
= &calldata
->fattr
;
3306 calldata
->res
.seqid
= calldata
->arg
.seqid
;
3307 calldata
->res
.server
= server
;
3308 calldata
->res
.lr_ret
= -NFS4ERR_NOMATCHING_LAYOUT
;
3309 calldata
->lr
.roc
= pnfs_roc(state
->inode
,
3310 &calldata
->lr
.arg
, &calldata
->lr
.res
, msg
.rpc_cred
);
3311 if (calldata
->lr
.roc
) {
3312 calldata
->arg
.lr_args
= &calldata
->lr
.arg
;
3313 calldata
->res
.lr_res
= &calldata
->lr
.res
;
3315 nfs_sb_active(calldata
->inode
->i_sb
);
3317 msg
.rpc_argp
= &calldata
->arg
;
3318 msg
.rpc_resp
= &calldata
->res
;
3319 task_setup_data
.callback_data
= calldata
;
3320 task
= rpc_run_task(&task_setup_data
);
3322 return PTR_ERR(task
);
3325 status
= rpc_wait_for_completion_task(task
);
3331 nfs4_put_open_state(state
);
3332 nfs4_put_state_owner(sp
);
3336 static struct inode
*
3337 nfs4_atomic_open(struct inode
*dir
, struct nfs_open_context
*ctx
,
3338 int open_flags
, struct iattr
*attr
, int *opened
)
3340 struct nfs4_state
*state
;
3341 struct nfs4_label l
= {0, 0, 0, NULL
}, *label
= NULL
;
3343 label
= nfs4_label_init_security(dir
, ctx
->dentry
, attr
, &l
);
3345 /* Protect against concurrent sillydeletes */
3346 state
= nfs4_do_open(dir
, ctx
, open_flags
, attr
, label
, opened
);
3348 nfs4_label_release_security(label
);
3351 return ERR_CAST(state
);
3352 return state
->inode
;
3355 static void nfs4_close_context(struct nfs_open_context
*ctx
, int is_sync
)
3357 if (ctx
->state
== NULL
)
3360 nfs4_close_sync(ctx
->state
, ctx
->mode
);
3362 nfs4_close_state(ctx
->state
, ctx
->mode
);
3365 #define FATTR4_WORD1_NFS40_MASK (2*FATTR4_WORD1_MOUNTED_ON_FILEID - 1UL)
3366 #define FATTR4_WORD2_NFS41_MASK (2*FATTR4_WORD2_SUPPATTR_EXCLCREAT - 1UL)
3367 #define FATTR4_WORD2_NFS42_MASK (2*FATTR4_WORD2_MODE_UMASK - 1UL)
3369 static int _nfs4_server_capabilities(struct nfs_server
*server
, struct nfs_fh
*fhandle
)
3371 u32 bitmask
[3] = {}, minorversion
= server
->nfs_client
->cl_minorversion
;
3372 struct nfs4_server_caps_arg args
= {
3376 struct nfs4_server_caps_res res
= {};
3377 struct rpc_message msg
= {
3378 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SERVER_CAPS
],
3384 bitmask
[0] = FATTR4_WORD0_SUPPORTED_ATTRS
|
3385 FATTR4_WORD0_FH_EXPIRE_TYPE
|
3386 FATTR4_WORD0_LINK_SUPPORT
|
3387 FATTR4_WORD0_SYMLINK_SUPPORT
|
3388 FATTR4_WORD0_ACLSUPPORT
;
3390 bitmask
[2] = FATTR4_WORD2_SUPPATTR_EXCLCREAT
;
3392 status
= nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
3394 /* Sanity check the server answers */
3395 switch (minorversion
) {
3397 res
.attr_bitmask
[1] &= FATTR4_WORD1_NFS40_MASK
;
3398 res
.attr_bitmask
[2] = 0;
3401 res
.attr_bitmask
[2] &= FATTR4_WORD2_NFS41_MASK
;
3404 res
.attr_bitmask
[2] &= FATTR4_WORD2_NFS42_MASK
;
3406 memcpy(server
->attr_bitmask
, res
.attr_bitmask
, sizeof(server
->attr_bitmask
));
3407 server
->caps
&= ~(NFS_CAP_ACLS
|NFS_CAP_HARDLINKS
|
3408 NFS_CAP_SYMLINKS
|NFS_CAP_FILEID
|
3409 NFS_CAP_MODE
|NFS_CAP_NLINK
|NFS_CAP_OWNER
|
3410 NFS_CAP_OWNER_GROUP
|NFS_CAP_ATIME
|
3411 NFS_CAP_CTIME
|NFS_CAP_MTIME
|
3412 NFS_CAP_SECURITY_LABEL
);
3413 if (res
.attr_bitmask
[0] & FATTR4_WORD0_ACL
&&
3414 res
.acl_bitmask
& ACL4_SUPPORT_ALLOW_ACL
)
3415 server
->caps
|= NFS_CAP_ACLS
;
3416 if (res
.has_links
!= 0)
3417 server
->caps
|= NFS_CAP_HARDLINKS
;
3418 if (res
.has_symlinks
!= 0)
3419 server
->caps
|= NFS_CAP_SYMLINKS
;
3420 if (res
.attr_bitmask
[0] & FATTR4_WORD0_FILEID
)
3421 server
->caps
|= NFS_CAP_FILEID
;
3422 if (res
.attr_bitmask
[1] & FATTR4_WORD1_MODE
)
3423 server
->caps
|= NFS_CAP_MODE
;
3424 if (res
.attr_bitmask
[1] & FATTR4_WORD1_NUMLINKS
)
3425 server
->caps
|= NFS_CAP_NLINK
;
3426 if (res
.attr_bitmask
[1] & FATTR4_WORD1_OWNER
)
3427 server
->caps
|= NFS_CAP_OWNER
;
3428 if (res
.attr_bitmask
[1] & FATTR4_WORD1_OWNER_GROUP
)
3429 server
->caps
|= NFS_CAP_OWNER_GROUP
;
3430 if (res
.attr_bitmask
[1] & FATTR4_WORD1_TIME_ACCESS
)
3431 server
->caps
|= NFS_CAP_ATIME
;
3432 if (res
.attr_bitmask
[1] & FATTR4_WORD1_TIME_METADATA
)
3433 server
->caps
|= NFS_CAP_CTIME
;
3434 if (res
.attr_bitmask
[1] & FATTR4_WORD1_TIME_MODIFY
)
3435 server
->caps
|= NFS_CAP_MTIME
;
3436 #ifdef CONFIG_NFS_V4_SECURITY_LABEL
3437 if (res
.attr_bitmask
[2] & FATTR4_WORD2_SECURITY_LABEL
)
3438 server
->caps
|= NFS_CAP_SECURITY_LABEL
;
3440 memcpy(server
->attr_bitmask_nl
, res
.attr_bitmask
,
3441 sizeof(server
->attr_bitmask
));
3442 server
->attr_bitmask_nl
[2] &= ~FATTR4_WORD2_SECURITY_LABEL
;
3444 memcpy(server
->cache_consistency_bitmask
, res
.attr_bitmask
, sizeof(server
->cache_consistency_bitmask
));
3445 server
->cache_consistency_bitmask
[0] &= FATTR4_WORD0_CHANGE
|FATTR4_WORD0_SIZE
;
3446 server
->cache_consistency_bitmask
[1] &= FATTR4_WORD1_TIME_METADATA
|FATTR4_WORD1_TIME_MODIFY
;
3447 server
->cache_consistency_bitmask
[2] = 0;
3448 memcpy(server
->exclcreat_bitmask
, res
.exclcreat_bitmask
,
3449 sizeof(server
->exclcreat_bitmask
));
3450 server
->acl_bitmask
= res
.acl_bitmask
;
3451 server
->fh_expire_type
= res
.fh_expire_type
;
3457 int nfs4_server_capabilities(struct nfs_server
*server
, struct nfs_fh
*fhandle
)
3459 struct nfs4_exception exception
= { };
3462 err
= nfs4_handle_exception(server
,
3463 _nfs4_server_capabilities(server
, fhandle
),
3465 } while (exception
.retry
);
3469 static int _nfs4_lookup_root(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
3470 struct nfs_fsinfo
*info
)
3473 struct nfs4_lookup_root_arg args
= {
3476 struct nfs4_lookup_res res
= {
3478 .fattr
= info
->fattr
,
3481 struct rpc_message msg
= {
3482 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOOKUP_ROOT
],
3487 bitmask
[0] = nfs4_fattr_bitmap
[0];
3488 bitmask
[1] = nfs4_fattr_bitmap
[1];
3490 * Process the label in the upcoming getfattr
3492 bitmask
[2] = nfs4_fattr_bitmap
[2] & ~FATTR4_WORD2_SECURITY_LABEL
;
3494 nfs_fattr_init(info
->fattr
);
3495 return nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
3498 static int nfs4_lookup_root(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
3499 struct nfs_fsinfo
*info
)
3501 struct nfs4_exception exception
= { };
3504 err
= _nfs4_lookup_root(server
, fhandle
, info
);
3505 trace_nfs4_lookup_root(server
, fhandle
, info
->fattr
, err
);
3508 case -NFS4ERR_WRONGSEC
:
3511 err
= nfs4_handle_exception(server
, err
, &exception
);
3513 } while (exception
.retry
);
3518 static int nfs4_lookup_root_sec(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
3519 struct nfs_fsinfo
*info
, rpc_authflavor_t flavor
)
3521 struct rpc_auth_create_args auth_args
= {
3522 .pseudoflavor
= flavor
,
3524 struct rpc_auth
*auth
;
3527 auth
= rpcauth_create(&auth_args
, server
->client
);
3532 ret
= nfs4_lookup_root(server
, fhandle
, info
);
3538 * Retry pseudoroot lookup with various security flavors. We do this when:
3540 * NFSv4.0: the PUTROOTFH operation returns NFS4ERR_WRONGSEC
3541 * NFSv4.1: the server does not support the SECINFO_NO_NAME operation
3543 * Returns zero on success, or a negative NFS4ERR value, or a
3544 * negative errno value.
3546 static int nfs4_find_root_sec(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
3547 struct nfs_fsinfo
*info
)
3549 /* Per 3530bis 15.33.5 */
3550 static const rpc_authflavor_t flav_array
[] = {
3554 RPC_AUTH_UNIX
, /* courtesy */
3557 int status
= -EPERM
;
3560 if (server
->auth_info
.flavor_len
> 0) {
3561 /* try each flavor specified by user */
3562 for (i
= 0; i
< server
->auth_info
.flavor_len
; i
++) {
3563 status
= nfs4_lookup_root_sec(server
, fhandle
, info
,
3564 server
->auth_info
.flavors
[i
]);
3565 if (status
== -NFS4ERR_WRONGSEC
|| status
== -EACCES
)
3570 /* no flavors specified by user, try default list */
3571 for (i
= 0; i
< ARRAY_SIZE(flav_array
); i
++) {
3572 status
= nfs4_lookup_root_sec(server
, fhandle
, info
,
3574 if (status
== -NFS4ERR_WRONGSEC
|| status
== -EACCES
)
3581 * -EACCESS could mean that the user doesn't have correct permissions
3582 * to access the mount. It could also mean that we tried to mount
3583 * with a gss auth flavor, but rpc.gssd isn't running. Either way,
3584 * existing mount programs don't handle -EACCES very well so it should
3585 * be mapped to -EPERM instead.
3587 if (status
== -EACCES
)
3593 * nfs4_proc_get_rootfh - get file handle for server's pseudoroot
3594 * @server: initialized nfs_server handle
3595 * @fhandle: we fill in the pseudo-fs root file handle
3596 * @info: we fill in an FSINFO struct
3597 * @auth_probe: probe the auth flavours
3599 * Returns zero on success, or a negative errno.
3601 int nfs4_proc_get_rootfh(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
3602 struct nfs_fsinfo
*info
,
3608 status
= nfs4_lookup_root(server
, fhandle
, info
);
3610 if (auth_probe
|| status
== NFS4ERR_WRONGSEC
)
3611 status
= server
->nfs_client
->cl_mvops
->find_root_sec(server
,
3615 status
= nfs4_server_capabilities(server
, fhandle
);
3617 status
= nfs4_do_fsinfo(server
, fhandle
, info
);
3619 return nfs4_map_errors(status
);
3622 static int nfs4_proc_get_root(struct nfs_server
*server
, struct nfs_fh
*mntfh
,
3623 struct nfs_fsinfo
*info
)
3626 struct nfs_fattr
*fattr
= info
->fattr
;
3627 struct nfs4_label
*label
= NULL
;
3629 error
= nfs4_server_capabilities(server
, mntfh
);
3631 dprintk("nfs4_get_root: getcaps error = %d\n", -error
);
3635 label
= nfs4_label_alloc(server
, GFP_KERNEL
);
3637 return PTR_ERR(label
);
3639 error
= nfs4_proc_getattr(server
, mntfh
, fattr
, label
);
3641 dprintk("nfs4_get_root: getattr error = %d\n", -error
);
3642 goto err_free_label
;
3645 if (fattr
->valid
& NFS_ATTR_FATTR_FSID
&&
3646 !nfs_fsid_equal(&server
->fsid
, &fattr
->fsid
))
3647 memcpy(&server
->fsid
, &fattr
->fsid
, sizeof(server
->fsid
));
3650 nfs4_label_free(label
);
3656 * Get locations and (maybe) other attributes of a referral.
3657 * Note that we'll actually follow the referral later when
3658 * we detect fsid mismatch in inode revalidation
3660 static int nfs4_get_referral(struct rpc_clnt
*client
, struct inode
*dir
,
3661 const struct qstr
*name
, struct nfs_fattr
*fattr
,
3662 struct nfs_fh
*fhandle
)
3664 int status
= -ENOMEM
;
3665 struct page
*page
= NULL
;
3666 struct nfs4_fs_locations
*locations
= NULL
;
3668 page
= alloc_page(GFP_KERNEL
);
3671 locations
= kmalloc(sizeof(struct nfs4_fs_locations
), GFP_KERNEL
);
3672 if (locations
== NULL
)
3675 status
= nfs4_proc_fs_locations(client
, dir
, name
, locations
, page
);
3680 * If the fsid didn't change, this is a migration event, not a
3681 * referral. Cause us to drop into the exception handler, which
3682 * will kick off migration recovery.
3684 if (nfs_fsid_equal(&NFS_SERVER(dir
)->fsid
, &locations
->fattr
.fsid
)) {
3685 dprintk("%s: server did not return a different fsid for"
3686 " a referral at %s\n", __func__
, name
->name
);
3687 status
= -NFS4ERR_MOVED
;
3690 /* Fixup attributes for the nfs_lookup() call to nfs_fhget() */
3691 nfs_fixup_referral_attributes(&locations
->fattr
);
3693 /* replace the lookup nfs_fattr with the locations nfs_fattr */
3694 memcpy(fattr
, &locations
->fattr
, sizeof(struct nfs_fattr
));
3695 memset(fhandle
, 0, sizeof(struct nfs_fh
));
3703 static int _nfs4_proc_getattr(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
3704 struct nfs_fattr
*fattr
, struct nfs4_label
*label
)
3706 struct nfs4_getattr_arg args
= {
3708 .bitmask
= server
->attr_bitmask
,
3710 struct nfs4_getattr_res res
= {
3715 struct rpc_message msg
= {
3716 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GETATTR
],
3721 args
.bitmask
= nfs4_bitmask(server
, label
);
3723 nfs_fattr_init(fattr
);
3724 return nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
3727 static int nfs4_proc_getattr(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
3728 struct nfs_fattr
*fattr
, struct nfs4_label
*label
)
3730 struct nfs4_exception exception
= { };
3733 err
= _nfs4_proc_getattr(server
, fhandle
, fattr
, label
);
3734 trace_nfs4_getattr(server
, fhandle
, fattr
, err
);
3735 err
= nfs4_handle_exception(server
, err
,
3737 } while (exception
.retry
);
3742 * The file is not closed if it is opened due to the a request to change
3743 * the size of the file. The open call will not be needed once the
3744 * VFS layer lookup-intents are implemented.
3746 * Close is called when the inode is destroyed.
3747 * If we haven't opened the file for O_WRONLY, we
3748 * need to in the size_change case to obtain a stateid.
3751 * Because OPEN is always done by name in nfsv4, it is
3752 * possible that we opened a different file by the same
3753 * name. We can recognize this race condition, but we
3754 * can't do anything about it besides returning an error.
3756 * This will be fixed with VFS changes (lookup-intent).
3759 nfs4_proc_setattr(struct dentry
*dentry
, struct nfs_fattr
*fattr
,
3760 struct iattr
*sattr
)
3762 struct inode
*inode
= d_inode(dentry
);
3763 struct rpc_cred
*cred
= NULL
;
3764 struct nfs_open_context
*ctx
= NULL
;
3765 struct nfs4_label
*label
= NULL
;
3768 if (pnfs_ld_layoutret_on_setattr(inode
) &&
3769 sattr
->ia_valid
& ATTR_SIZE
&&
3770 sattr
->ia_size
< i_size_read(inode
))
3771 pnfs_commit_and_return_layout(inode
);
3773 nfs_fattr_init(fattr
);
3775 /* Deal with open(O_TRUNC) */
3776 if (sattr
->ia_valid
& ATTR_OPEN
)
3777 sattr
->ia_valid
&= ~(ATTR_MTIME
|ATTR_CTIME
);
3779 /* Optimization: if the end result is no change, don't RPC */
3780 if ((sattr
->ia_valid
& ~(ATTR_FILE
|ATTR_OPEN
)) == 0)
3783 /* Search for an existing open(O_WRITE) file */
3784 if (sattr
->ia_valid
& ATTR_FILE
) {
3786 ctx
= nfs_file_open_context(sattr
->ia_file
);
3791 label
= nfs4_label_alloc(NFS_SERVER(inode
), GFP_KERNEL
);
3793 return PTR_ERR(label
);
3795 status
= nfs4_do_setattr(inode
, cred
, fattr
, sattr
, ctx
, NULL
, label
);
3797 nfs_setattr_update_inode(inode
, sattr
, fattr
);
3798 nfs_setsecurity(inode
, fattr
, label
);
3800 nfs4_label_free(label
);
3804 static int _nfs4_proc_lookup(struct rpc_clnt
*clnt
, struct inode
*dir
,
3805 const struct qstr
*name
, struct nfs_fh
*fhandle
,
3806 struct nfs_fattr
*fattr
, struct nfs4_label
*label
)
3808 struct nfs_server
*server
= NFS_SERVER(dir
);
3810 struct nfs4_lookup_arg args
= {
3811 .bitmask
= server
->attr_bitmask
,
3812 .dir_fh
= NFS_FH(dir
),
3815 struct nfs4_lookup_res res
= {
3821 struct rpc_message msg
= {
3822 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOOKUP
],
3827 args
.bitmask
= nfs4_bitmask(server
, label
);
3829 nfs_fattr_init(fattr
);
3831 dprintk("NFS call lookup %s\n", name
->name
);
3832 status
= nfs4_call_sync(clnt
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
3833 dprintk("NFS reply lookup: %d\n", status
);
3837 static void nfs_fixup_secinfo_attributes(struct nfs_fattr
*fattr
)
3839 fattr
->valid
|= NFS_ATTR_FATTR_TYPE
| NFS_ATTR_FATTR_MODE
|
3840 NFS_ATTR_FATTR_NLINK
| NFS_ATTR_FATTR_MOUNTPOINT
;
3841 fattr
->mode
= S_IFDIR
| S_IRUGO
| S_IXUGO
;
3845 static int nfs4_proc_lookup_common(struct rpc_clnt
**clnt
, struct inode
*dir
,
3846 const struct qstr
*name
, struct nfs_fh
*fhandle
,
3847 struct nfs_fattr
*fattr
, struct nfs4_label
*label
)
3849 struct nfs4_exception exception
= { };
3850 struct rpc_clnt
*client
= *clnt
;
3853 err
= _nfs4_proc_lookup(client
, dir
, name
, fhandle
, fattr
, label
);
3854 trace_nfs4_lookup(dir
, name
, err
);
3856 case -NFS4ERR_BADNAME
:
3859 case -NFS4ERR_MOVED
:
3860 err
= nfs4_get_referral(client
, dir
, name
, fattr
, fhandle
);
3861 if (err
== -NFS4ERR_MOVED
)
3862 err
= nfs4_handle_exception(NFS_SERVER(dir
), err
, &exception
);
3864 case -NFS4ERR_WRONGSEC
:
3866 if (client
!= *clnt
)
3868 client
= nfs4_negotiate_security(client
, dir
, name
);
3870 return PTR_ERR(client
);
3872 exception
.retry
= 1;
3875 err
= nfs4_handle_exception(NFS_SERVER(dir
), err
, &exception
);
3877 } while (exception
.retry
);
3882 else if (client
!= *clnt
)
3883 rpc_shutdown_client(client
);
3888 static int nfs4_proc_lookup(struct inode
*dir
, const struct qstr
*name
,
3889 struct nfs_fh
*fhandle
, struct nfs_fattr
*fattr
,
3890 struct nfs4_label
*label
)
3893 struct rpc_clnt
*client
= NFS_CLIENT(dir
);
3895 status
= nfs4_proc_lookup_common(&client
, dir
, name
, fhandle
, fattr
, label
);
3896 if (client
!= NFS_CLIENT(dir
)) {
3897 rpc_shutdown_client(client
);
3898 nfs_fixup_secinfo_attributes(fattr
);
3904 nfs4_proc_lookup_mountpoint(struct inode
*dir
, const struct qstr
*name
,
3905 struct nfs_fh
*fhandle
, struct nfs_fattr
*fattr
)
3907 struct rpc_clnt
*client
= NFS_CLIENT(dir
);
3910 status
= nfs4_proc_lookup_common(&client
, dir
, name
, fhandle
, fattr
, NULL
);
3912 return ERR_PTR(status
);
3913 return (client
== NFS_CLIENT(dir
)) ? rpc_clone_client(client
) : client
;
3916 static int _nfs4_proc_access(struct inode
*inode
, struct nfs_access_entry
*entry
)
3918 struct nfs_server
*server
= NFS_SERVER(inode
);
3919 struct nfs4_accessargs args
= {
3920 .fh
= NFS_FH(inode
),
3921 .bitmask
= server
->cache_consistency_bitmask
,
3923 struct nfs4_accessres res
= {
3926 struct rpc_message msg
= {
3927 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_ACCESS
],
3930 .rpc_cred
= entry
->cred
,
3932 int mode
= entry
->mask
;
3936 * Determine which access bits we want to ask for...
3938 if (mode
& MAY_READ
)
3939 args
.access
|= NFS4_ACCESS_READ
;
3940 if (S_ISDIR(inode
->i_mode
)) {
3941 if (mode
& MAY_WRITE
)
3942 args
.access
|= NFS4_ACCESS_MODIFY
| NFS4_ACCESS_EXTEND
| NFS4_ACCESS_DELETE
;
3943 if (mode
& MAY_EXEC
)
3944 args
.access
|= NFS4_ACCESS_LOOKUP
;
3946 if (mode
& MAY_WRITE
)
3947 args
.access
|= NFS4_ACCESS_MODIFY
| NFS4_ACCESS_EXTEND
;
3948 if (mode
& MAY_EXEC
)
3949 args
.access
|= NFS4_ACCESS_EXECUTE
;
3952 res
.fattr
= nfs_alloc_fattr();
3953 if (res
.fattr
== NULL
)
3956 status
= nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
3958 nfs_access_set_mask(entry
, res
.access
);
3959 nfs_refresh_inode(inode
, res
.fattr
);
3961 nfs_free_fattr(res
.fattr
);
3965 static int nfs4_proc_access(struct inode
*inode
, struct nfs_access_entry
*entry
)
3967 struct nfs4_exception exception
= { };
3970 err
= _nfs4_proc_access(inode
, entry
);
3971 trace_nfs4_access(inode
, err
);
3972 err
= nfs4_handle_exception(NFS_SERVER(inode
), err
,
3974 } while (exception
.retry
);
3979 * TODO: For the time being, we don't try to get any attributes
3980 * along with any of the zero-copy operations READ, READDIR,
3983 * In the case of the first three, we want to put the GETATTR
3984 * after the read-type operation -- this is because it is hard
3985 * to predict the length of a GETATTR response in v4, and thus
3986 * align the READ data correctly. This means that the GETATTR
3987 * may end up partially falling into the page cache, and we should
3988 * shift it into the 'tail' of the xdr_buf before processing.
3989 * To do this efficiently, we need to know the total length
3990 * of data received, which doesn't seem to be available outside
3993 * In the case of WRITE, we also want to put the GETATTR after
3994 * the operation -- in this case because we want to make sure
3995 * we get the post-operation mtime and size.
3997 * Both of these changes to the XDR layer would in fact be quite
3998 * minor, but I decided to leave them for a subsequent patch.
4000 static int _nfs4_proc_readlink(struct inode
*inode
, struct page
*page
,
4001 unsigned int pgbase
, unsigned int pglen
)
4003 struct nfs4_readlink args
= {
4004 .fh
= NFS_FH(inode
),
4009 struct nfs4_readlink_res res
;
4010 struct rpc_message msg
= {
4011 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_READLINK
],
4016 return nfs4_call_sync(NFS_SERVER(inode
)->client
, NFS_SERVER(inode
), &msg
, &args
.seq_args
, &res
.seq_res
, 0);
4019 static int nfs4_proc_readlink(struct inode
*inode
, struct page
*page
,
4020 unsigned int pgbase
, unsigned int pglen
)
4022 struct nfs4_exception exception
= { };
4025 err
= _nfs4_proc_readlink(inode
, page
, pgbase
, pglen
);
4026 trace_nfs4_readlink(inode
, err
);
4027 err
= nfs4_handle_exception(NFS_SERVER(inode
), err
,
4029 } while (exception
.retry
);
4034 * This is just for mknod. open(O_CREAT) will always do ->open_context().
4037 nfs4_proc_create(struct inode
*dir
, struct dentry
*dentry
, struct iattr
*sattr
,
4040 struct nfs_server
*server
= NFS_SERVER(dir
);
4041 struct nfs4_label l
, *ilabel
= NULL
;
4042 struct nfs_open_context
*ctx
;
4043 struct nfs4_state
*state
;
4046 ctx
= alloc_nfs_open_context(dentry
, FMODE_READ
, NULL
);
4048 return PTR_ERR(ctx
);
4050 ilabel
= nfs4_label_init_security(dir
, dentry
, sattr
, &l
);
4052 if (!(server
->attr_bitmask
[2] & FATTR4_WORD2_MODE_UMASK
))
4053 sattr
->ia_mode
&= ~current_umask();
4054 state
= nfs4_do_open(dir
, ctx
, flags
, sattr
, ilabel
, NULL
);
4055 if (IS_ERR(state
)) {
4056 status
= PTR_ERR(state
);
4060 nfs4_label_release_security(ilabel
);
4061 put_nfs_open_context(ctx
);
4065 static int _nfs4_proc_remove(struct inode
*dir
, const struct qstr
*name
)
4067 struct nfs_server
*server
= NFS_SERVER(dir
);
4068 struct nfs_removeargs args
= {
4072 struct nfs_removeres res
= {
4075 struct rpc_message msg
= {
4076 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_REMOVE
],
4080 unsigned long timestamp
= jiffies
;
4083 status
= nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 1);
4085 update_changeattr(dir
, &res
.cinfo
, timestamp
);
4089 static int nfs4_proc_remove(struct inode
*dir
, const struct qstr
*name
)
4091 struct nfs4_exception exception
= { };
4094 err
= _nfs4_proc_remove(dir
, name
);
4095 trace_nfs4_remove(dir
, name
, err
);
4096 err
= nfs4_handle_exception(NFS_SERVER(dir
), err
,
4098 } while (exception
.retry
);
4102 static void nfs4_proc_unlink_setup(struct rpc_message
*msg
, struct inode
*dir
)
4104 struct nfs_server
*server
= NFS_SERVER(dir
);
4105 struct nfs_removeargs
*args
= msg
->rpc_argp
;
4106 struct nfs_removeres
*res
= msg
->rpc_resp
;
4108 res
->server
= server
;
4109 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_REMOVE
];
4110 nfs4_init_sequence(&args
->seq_args
, &res
->seq_res
, 1);
4112 nfs_fattr_init(res
->dir_attr
);
4115 static void nfs4_proc_unlink_rpc_prepare(struct rpc_task
*task
, struct nfs_unlinkdata
*data
)
4117 nfs4_setup_sequence(NFS_SB(data
->dentry
->d_sb
),
4118 &data
->args
.seq_args
,
4123 static int nfs4_proc_unlink_done(struct rpc_task
*task
, struct inode
*dir
)
4125 struct nfs_unlinkdata
*data
= task
->tk_calldata
;
4126 struct nfs_removeres
*res
= &data
->res
;
4128 if (!nfs4_sequence_done(task
, &res
->seq_res
))
4130 if (nfs4_async_handle_error(task
, res
->server
, NULL
,
4131 &data
->timeout
) == -EAGAIN
)
4133 if (task
->tk_status
== 0)
4134 update_changeattr(dir
, &res
->cinfo
, res
->dir_attr
->time_start
);
4138 static void nfs4_proc_rename_setup(struct rpc_message
*msg
, struct inode
*dir
)
4140 struct nfs_server
*server
= NFS_SERVER(dir
);
4141 struct nfs_renameargs
*arg
= msg
->rpc_argp
;
4142 struct nfs_renameres
*res
= msg
->rpc_resp
;
4144 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RENAME
];
4145 res
->server
= server
;
4146 nfs4_init_sequence(&arg
->seq_args
, &res
->seq_res
, 1);
4149 static void nfs4_proc_rename_rpc_prepare(struct rpc_task
*task
, struct nfs_renamedata
*data
)
4151 nfs4_setup_sequence(NFS_SERVER(data
->old_dir
),
4152 &data
->args
.seq_args
,
4157 static int nfs4_proc_rename_done(struct rpc_task
*task
, struct inode
*old_dir
,
4158 struct inode
*new_dir
)
4160 struct nfs_renamedata
*data
= task
->tk_calldata
;
4161 struct nfs_renameres
*res
= &data
->res
;
4163 if (!nfs4_sequence_done(task
, &res
->seq_res
))
4165 if (nfs4_async_handle_error(task
, res
->server
, NULL
, &data
->timeout
) == -EAGAIN
)
4168 if (task
->tk_status
== 0) {
4169 update_changeattr(old_dir
, &res
->old_cinfo
, res
->old_fattr
->time_start
);
4170 if (new_dir
!= old_dir
)
4171 update_changeattr(new_dir
, &res
->new_cinfo
, res
->new_fattr
->time_start
);
4176 static int _nfs4_proc_link(struct inode
*inode
, struct inode
*dir
, const struct qstr
*name
)
4178 struct nfs_server
*server
= NFS_SERVER(inode
);
4179 struct nfs4_link_arg arg
= {
4180 .fh
= NFS_FH(inode
),
4181 .dir_fh
= NFS_FH(dir
),
4183 .bitmask
= server
->attr_bitmask
,
4185 struct nfs4_link_res res
= {
4189 struct rpc_message msg
= {
4190 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LINK
],
4194 int status
= -ENOMEM
;
4196 res
.fattr
= nfs_alloc_fattr();
4197 if (res
.fattr
== NULL
)
4200 res
.label
= nfs4_label_alloc(server
, GFP_KERNEL
);
4201 if (IS_ERR(res
.label
)) {
4202 status
= PTR_ERR(res
.label
);
4205 arg
.bitmask
= nfs4_bitmask(server
, res
.label
);
4207 status
= nfs4_call_sync(server
->client
, server
, &msg
, &arg
.seq_args
, &res
.seq_res
, 1);
4209 update_changeattr(dir
, &res
.cinfo
, res
.fattr
->time_start
);
4210 status
= nfs_post_op_update_inode(inode
, res
.fattr
);
4212 nfs_setsecurity(inode
, res
.fattr
, res
.label
);
4216 nfs4_label_free(res
.label
);
4219 nfs_free_fattr(res
.fattr
);
4223 static int nfs4_proc_link(struct inode
*inode
, struct inode
*dir
, const struct qstr
*name
)
4225 struct nfs4_exception exception
= { };
4228 err
= nfs4_handle_exception(NFS_SERVER(inode
),
4229 _nfs4_proc_link(inode
, dir
, name
),
4231 } while (exception
.retry
);
4235 struct nfs4_createdata
{
4236 struct rpc_message msg
;
4237 struct nfs4_create_arg arg
;
4238 struct nfs4_create_res res
;
4240 struct nfs_fattr fattr
;
4241 struct nfs4_label
*label
;
4244 static struct nfs4_createdata
*nfs4_alloc_createdata(struct inode
*dir
,
4245 const struct qstr
*name
, struct iattr
*sattr
, u32 ftype
)
4247 struct nfs4_createdata
*data
;
4249 data
= kzalloc(sizeof(*data
), GFP_KERNEL
);
4251 struct nfs_server
*server
= NFS_SERVER(dir
);
4253 data
->label
= nfs4_label_alloc(server
, GFP_KERNEL
);
4254 if (IS_ERR(data
->label
))
4257 data
->msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_CREATE
];
4258 data
->msg
.rpc_argp
= &data
->arg
;
4259 data
->msg
.rpc_resp
= &data
->res
;
4260 data
->arg
.dir_fh
= NFS_FH(dir
);
4261 data
->arg
.server
= server
;
4262 data
->arg
.name
= name
;
4263 data
->arg
.attrs
= sattr
;
4264 data
->arg
.ftype
= ftype
;
4265 data
->arg
.bitmask
= nfs4_bitmask(server
, data
->label
);
4266 data
->arg
.umask
= current_umask();
4267 data
->res
.server
= server
;
4268 data
->res
.fh
= &data
->fh
;
4269 data
->res
.fattr
= &data
->fattr
;
4270 data
->res
.label
= data
->label
;
4271 nfs_fattr_init(data
->res
.fattr
);
4279 static int nfs4_do_create(struct inode
*dir
, struct dentry
*dentry
, struct nfs4_createdata
*data
)
4281 int status
= nfs4_call_sync(NFS_SERVER(dir
)->client
, NFS_SERVER(dir
), &data
->msg
,
4282 &data
->arg
.seq_args
, &data
->res
.seq_res
, 1);
4284 update_changeattr(dir
, &data
->res
.dir_cinfo
,
4285 data
->res
.fattr
->time_start
);
4286 status
= nfs_instantiate(dentry
, data
->res
.fh
, data
->res
.fattr
, data
->res
.label
);
4291 static void nfs4_free_createdata(struct nfs4_createdata
*data
)
4293 nfs4_label_free(data
->label
);
4297 static int _nfs4_proc_symlink(struct inode
*dir
, struct dentry
*dentry
,
4298 struct page
*page
, unsigned int len
, struct iattr
*sattr
,
4299 struct nfs4_label
*label
)
4301 struct nfs4_createdata
*data
;
4302 int status
= -ENAMETOOLONG
;
4304 if (len
> NFS4_MAXPATHLEN
)
4308 data
= nfs4_alloc_createdata(dir
, &dentry
->d_name
, sattr
, NF4LNK
);
4312 data
->msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SYMLINK
];
4313 data
->arg
.u
.symlink
.pages
= &page
;
4314 data
->arg
.u
.symlink
.len
= len
;
4315 data
->arg
.label
= label
;
4317 status
= nfs4_do_create(dir
, dentry
, data
);
4319 nfs4_free_createdata(data
);
4324 static int nfs4_proc_symlink(struct inode
*dir
, struct dentry
*dentry
,
4325 struct page
*page
, unsigned int len
, struct iattr
*sattr
)
4327 struct nfs4_exception exception
= { };
4328 struct nfs4_label l
, *label
= NULL
;
4331 label
= nfs4_label_init_security(dir
, dentry
, sattr
, &l
);
4334 err
= _nfs4_proc_symlink(dir
, dentry
, page
, len
, sattr
, label
);
4335 trace_nfs4_symlink(dir
, &dentry
->d_name
, err
);
4336 err
= nfs4_handle_exception(NFS_SERVER(dir
), err
,
4338 } while (exception
.retry
);
4340 nfs4_label_release_security(label
);
4344 static int _nfs4_proc_mkdir(struct inode
*dir
, struct dentry
*dentry
,
4345 struct iattr
*sattr
, struct nfs4_label
*label
)
4347 struct nfs4_createdata
*data
;
4348 int status
= -ENOMEM
;
4350 data
= nfs4_alloc_createdata(dir
, &dentry
->d_name
, sattr
, NF4DIR
);
4354 data
->arg
.label
= label
;
4355 status
= nfs4_do_create(dir
, dentry
, data
);
4357 nfs4_free_createdata(data
);
4362 static int nfs4_proc_mkdir(struct inode
*dir
, struct dentry
*dentry
,
4363 struct iattr
*sattr
)
4365 struct nfs_server
*server
= NFS_SERVER(dir
);
4366 struct nfs4_exception exception
= { };
4367 struct nfs4_label l
, *label
= NULL
;
4370 label
= nfs4_label_init_security(dir
, dentry
, sattr
, &l
);
4372 if (!(server
->attr_bitmask
[2] & FATTR4_WORD2_MODE_UMASK
))
4373 sattr
->ia_mode
&= ~current_umask();
4375 err
= _nfs4_proc_mkdir(dir
, dentry
, sattr
, label
);
4376 trace_nfs4_mkdir(dir
, &dentry
->d_name
, err
);
4377 err
= nfs4_handle_exception(NFS_SERVER(dir
), err
,
4379 } while (exception
.retry
);
4380 nfs4_label_release_security(label
);
4385 static int _nfs4_proc_readdir(struct dentry
*dentry
, struct rpc_cred
*cred
,
4386 u64 cookie
, struct page
**pages
, unsigned int count
, int plus
)
4388 struct inode
*dir
= d_inode(dentry
);
4389 struct nfs4_readdir_arg args
= {
4394 .bitmask
= NFS_SERVER(d_inode(dentry
))->attr_bitmask
,
4397 struct nfs4_readdir_res res
;
4398 struct rpc_message msg
= {
4399 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_READDIR
],
4406 dprintk("%s: dentry = %pd2, cookie = %Lu\n", __func__
,
4408 (unsigned long long)cookie
);
4409 nfs4_setup_readdir(cookie
, NFS_I(dir
)->cookieverf
, dentry
, &args
);
4410 res
.pgbase
= args
.pgbase
;
4411 status
= nfs4_call_sync(NFS_SERVER(dir
)->client
, NFS_SERVER(dir
), &msg
, &args
.seq_args
, &res
.seq_res
, 0);
4413 memcpy(NFS_I(dir
)->cookieverf
, res
.verifier
.data
, NFS4_VERIFIER_SIZE
);
4414 status
+= args
.pgbase
;
4417 nfs_invalidate_atime(dir
);
4419 dprintk("%s: returns %d\n", __func__
, status
);
4423 static int nfs4_proc_readdir(struct dentry
*dentry
, struct rpc_cred
*cred
,
4424 u64 cookie
, struct page
**pages
, unsigned int count
, int plus
)
4426 struct nfs4_exception exception
= { };
4429 err
= _nfs4_proc_readdir(dentry
, cred
, cookie
,
4430 pages
, count
, plus
);
4431 trace_nfs4_readdir(d_inode(dentry
), err
);
4432 err
= nfs4_handle_exception(NFS_SERVER(d_inode(dentry
)), err
,
4434 } while (exception
.retry
);
4438 static int _nfs4_proc_mknod(struct inode
*dir
, struct dentry
*dentry
,
4439 struct iattr
*sattr
, struct nfs4_label
*label
, dev_t rdev
)
4441 struct nfs4_createdata
*data
;
4442 int mode
= sattr
->ia_mode
;
4443 int status
= -ENOMEM
;
4445 data
= nfs4_alloc_createdata(dir
, &dentry
->d_name
, sattr
, NF4SOCK
);
4450 data
->arg
.ftype
= NF4FIFO
;
4451 else if (S_ISBLK(mode
)) {
4452 data
->arg
.ftype
= NF4BLK
;
4453 data
->arg
.u
.device
.specdata1
= MAJOR(rdev
);
4454 data
->arg
.u
.device
.specdata2
= MINOR(rdev
);
4456 else if (S_ISCHR(mode
)) {
4457 data
->arg
.ftype
= NF4CHR
;
4458 data
->arg
.u
.device
.specdata1
= MAJOR(rdev
);
4459 data
->arg
.u
.device
.specdata2
= MINOR(rdev
);
4460 } else if (!S_ISSOCK(mode
)) {
4465 data
->arg
.label
= label
;
4466 status
= nfs4_do_create(dir
, dentry
, data
);
4468 nfs4_free_createdata(data
);
4473 static int nfs4_proc_mknod(struct inode
*dir
, struct dentry
*dentry
,
4474 struct iattr
*sattr
, dev_t rdev
)
4476 struct nfs_server
*server
= NFS_SERVER(dir
);
4477 struct nfs4_exception exception
= { };
4478 struct nfs4_label l
, *label
= NULL
;
4481 label
= nfs4_label_init_security(dir
, dentry
, sattr
, &l
);
4483 if (!(server
->attr_bitmask
[2] & FATTR4_WORD2_MODE_UMASK
))
4484 sattr
->ia_mode
&= ~current_umask();
4486 err
= _nfs4_proc_mknod(dir
, dentry
, sattr
, label
, rdev
);
4487 trace_nfs4_mknod(dir
, &dentry
->d_name
, err
);
4488 err
= nfs4_handle_exception(NFS_SERVER(dir
), err
,
4490 } while (exception
.retry
);
4492 nfs4_label_release_security(label
);
4497 static int _nfs4_proc_statfs(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
4498 struct nfs_fsstat
*fsstat
)
4500 struct nfs4_statfs_arg args
= {
4502 .bitmask
= server
->attr_bitmask
,
4504 struct nfs4_statfs_res res
= {
4507 struct rpc_message msg
= {
4508 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_STATFS
],
4513 nfs_fattr_init(fsstat
->fattr
);
4514 return nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
4517 static int nfs4_proc_statfs(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fsstat
*fsstat
)
4519 struct nfs4_exception exception
= { };
4522 err
= nfs4_handle_exception(server
,
4523 _nfs4_proc_statfs(server
, fhandle
, fsstat
),
4525 } while (exception
.retry
);
4529 static int _nfs4_do_fsinfo(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
4530 struct nfs_fsinfo
*fsinfo
)
4532 struct nfs4_fsinfo_arg args
= {
4534 .bitmask
= server
->attr_bitmask
,
4536 struct nfs4_fsinfo_res res
= {
4539 struct rpc_message msg
= {
4540 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_FSINFO
],
4545 return nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
4548 static int nfs4_do_fsinfo(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fsinfo
*fsinfo
)
4550 struct nfs4_exception exception
= { };
4551 unsigned long now
= jiffies
;
4555 err
= _nfs4_do_fsinfo(server
, fhandle
, fsinfo
);
4556 trace_nfs4_fsinfo(server
, fhandle
, fsinfo
->fattr
, err
);
4558 nfs4_set_lease_period(server
->nfs_client
,
4559 fsinfo
->lease_time
* HZ
,
4563 err
= nfs4_handle_exception(server
, err
, &exception
);
4564 } while (exception
.retry
);
4568 static int nfs4_proc_fsinfo(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fsinfo
*fsinfo
)
4572 nfs_fattr_init(fsinfo
->fattr
);
4573 error
= nfs4_do_fsinfo(server
, fhandle
, fsinfo
);
4575 /* block layout checks this! */
4576 server
->pnfs_blksize
= fsinfo
->blksize
;
4577 set_pnfs_layoutdriver(server
, fhandle
, fsinfo
);
4583 static int _nfs4_proc_pathconf(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
4584 struct nfs_pathconf
*pathconf
)
4586 struct nfs4_pathconf_arg args
= {
4588 .bitmask
= server
->attr_bitmask
,
4590 struct nfs4_pathconf_res res
= {
4591 .pathconf
= pathconf
,
4593 struct rpc_message msg
= {
4594 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_PATHCONF
],
4599 /* None of the pathconf attributes are mandatory to implement */
4600 if ((args
.bitmask
[0] & nfs4_pathconf_bitmap
[0]) == 0) {
4601 memset(pathconf
, 0, sizeof(*pathconf
));
4605 nfs_fattr_init(pathconf
->fattr
);
4606 return nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
4609 static int nfs4_proc_pathconf(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
4610 struct nfs_pathconf
*pathconf
)
4612 struct nfs4_exception exception
= { };
4616 err
= nfs4_handle_exception(server
,
4617 _nfs4_proc_pathconf(server
, fhandle
, pathconf
),
4619 } while (exception
.retry
);
4623 int nfs4_set_rw_stateid(nfs4_stateid
*stateid
,
4624 const struct nfs_open_context
*ctx
,
4625 const struct nfs_lock_context
*l_ctx
,
4628 return nfs4_select_rw_stateid(ctx
->state
, fmode
, l_ctx
, stateid
, NULL
);
4630 EXPORT_SYMBOL_GPL(nfs4_set_rw_stateid
);
4632 static bool nfs4_stateid_is_current(nfs4_stateid
*stateid
,
4633 const struct nfs_open_context
*ctx
,
4634 const struct nfs_lock_context
*l_ctx
,
4637 nfs4_stateid current_stateid
;
4639 /* If the current stateid represents a lost lock, then exit */
4640 if (nfs4_set_rw_stateid(¤t_stateid
, ctx
, l_ctx
, fmode
) == -EIO
)
4642 return nfs4_stateid_match(stateid
, ¤t_stateid
);
4645 static bool nfs4_error_stateid_expired(int err
)
4648 case -NFS4ERR_DELEG_REVOKED
:
4649 case -NFS4ERR_ADMIN_REVOKED
:
4650 case -NFS4ERR_BAD_STATEID
:
4651 case -NFS4ERR_STALE_STATEID
:
4652 case -NFS4ERR_OLD_STATEID
:
4653 case -NFS4ERR_OPENMODE
:
4654 case -NFS4ERR_EXPIRED
:
4660 static int nfs4_read_done_cb(struct rpc_task
*task
, struct nfs_pgio_header
*hdr
)
4662 struct nfs_server
*server
= NFS_SERVER(hdr
->inode
);
4664 trace_nfs4_read(hdr
, task
->tk_status
);
4665 if (task
->tk_status
< 0) {
4666 struct nfs4_exception exception
= {
4667 .inode
= hdr
->inode
,
4668 .state
= hdr
->args
.context
->state
,
4669 .stateid
= &hdr
->args
.stateid
,
4671 task
->tk_status
= nfs4_async_handle_exception(task
,
4672 server
, task
->tk_status
, &exception
);
4673 if (exception
.retry
) {
4674 rpc_restart_call_prepare(task
);
4679 if (task
->tk_status
> 0)
4680 renew_lease(server
, hdr
->timestamp
);
4684 static bool nfs4_read_stateid_changed(struct rpc_task
*task
,
4685 struct nfs_pgio_args
*args
)
4688 if (!nfs4_error_stateid_expired(task
->tk_status
) ||
4689 nfs4_stateid_is_current(&args
->stateid
,
4694 rpc_restart_call_prepare(task
);
4698 static int nfs4_read_done(struct rpc_task
*task
, struct nfs_pgio_header
*hdr
)
4701 dprintk("--> %s\n", __func__
);
4703 if (!nfs4_sequence_done(task
, &hdr
->res
.seq_res
))
4705 if (nfs4_read_stateid_changed(task
, &hdr
->args
))
4707 if (task
->tk_status
> 0)
4708 nfs_invalidate_atime(hdr
->inode
);
4709 return hdr
->pgio_done_cb
? hdr
->pgio_done_cb(task
, hdr
) :
4710 nfs4_read_done_cb(task
, hdr
);
4713 static void nfs4_proc_read_setup(struct nfs_pgio_header
*hdr
,
4714 struct rpc_message
*msg
)
4716 hdr
->timestamp
= jiffies
;
4717 if (!hdr
->pgio_done_cb
)
4718 hdr
->pgio_done_cb
= nfs4_read_done_cb
;
4719 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_READ
];
4720 nfs4_init_sequence(&hdr
->args
.seq_args
, &hdr
->res
.seq_res
, 0);
4723 static int nfs4_proc_pgio_rpc_prepare(struct rpc_task
*task
,
4724 struct nfs_pgio_header
*hdr
)
4726 if (nfs4_setup_sequence(NFS_SERVER(hdr
->inode
),
4727 &hdr
->args
.seq_args
,
4731 if (nfs4_set_rw_stateid(&hdr
->args
.stateid
, hdr
->args
.context
,
4732 hdr
->args
.lock_context
,
4733 hdr
->rw_ops
->rw_mode
) == -EIO
)
4735 if (unlikely(test_bit(NFS_CONTEXT_BAD
, &hdr
->args
.context
->flags
)))
4740 static int nfs4_write_done_cb(struct rpc_task
*task
,
4741 struct nfs_pgio_header
*hdr
)
4743 struct inode
*inode
= hdr
->inode
;
4745 trace_nfs4_write(hdr
, task
->tk_status
);
4746 if (task
->tk_status
< 0) {
4747 struct nfs4_exception exception
= {
4748 .inode
= hdr
->inode
,
4749 .state
= hdr
->args
.context
->state
,
4750 .stateid
= &hdr
->args
.stateid
,
4752 task
->tk_status
= nfs4_async_handle_exception(task
,
4753 NFS_SERVER(inode
), task
->tk_status
,
4755 if (exception
.retry
) {
4756 rpc_restart_call_prepare(task
);
4760 if (task
->tk_status
>= 0) {
4761 renew_lease(NFS_SERVER(inode
), hdr
->timestamp
);
4762 nfs_writeback_update_inode(hdr
);
4767 static bool nfs4_write_stateid_changed(struct rpc_task
*task
,
4768 struct nfs_pgio_args
*args
)
4771 if (!nfs4_error_stateid_expired(task
->tk_status
) ||
4772 nfs4_stateid_is_current(&args
->stateid
,
4777 rpc_restart_call_prepare(task
);
4781 static int nfs4_write_done(struct rpc_task
*task
, struct nfs_pgio_header
*hdr
)
4783 if (!nfs4_sequence_done(task
, &hdr
->res
.seq_res
))
4785 if (nfs4_write_stateid_changed(task
, &hdr
->args
))
4787 return hdr
->pgio_done_cb
? hdr
->pgio_done_cb(task
, hdr
) :
4788 nfs4_write_done_cb(task
, hdr
);
4792 bool nfs4_write_need_cache_consistency_data(struct nfs_pgio_header
*hdr
)
4794 /* Don't request attributes for pNFS or O_DIRECT writes */
4795 if (hdr
->ds_clp
!= NULL
|| hdr
->dreq
!= NULL
)
4797 /* Otherwise, request attributes if and only if we don't hold
4800 return nfs4_have_delegation(hdr
->inode
, FMODE_READ
) == 0;
4803 static void nfs4_proc_write_setup(struct nfs_pgio_header
*hdr
,
4804 struct rpc_message
*msg
)
4806 struct nfs_server
*server
= NFS_SERVER(hdr
->inode
);
4808 if (!nfs4_write_need_cache_consistency_data(hdr
)) {
4809 hdr
->args
.bitmask
= NULL
;
4810 hdr
->res
.fattr
= NULL
;
4812 hdr
->args
.bitmask
= server
->cache_consistency_bitmask
;
4814 if (!hdr
->pgio_done_cb
)
4815 hdr
->pgio_done_cb
= nfs4_write_done_cb
;
4816 hdr
->res
.server
= server
;
4817 hdr
->timestamp
= jiffies
;
4819 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_WRITE
];
4820 nfs4_init_sequence(&hdr
->args
.seq_args
, &hdr
->res
.seq_res
, 1);
4823 static void nfs4_proc_commit_rpc_prepare(struct rpc_task
*task
, struct nfs_commit_data
*data
)
4825 nfs4_setup_sequence(NFS_SERVER(data
->inode
),
4826 &data
->args
.seq_args
,
4831 static int nfs4_commit_done_cb(struct rpc_task
*task
, struct nfs_commit_data
*data
)
4833 struct inode
*inode
= data
->inode
;
4835 trace_nfs4_commit(data
, task
->tk_status
);
4836 if (nfs4_async_handle_error(task
, NFS_SERVER(inode
),
4837 NULL
, NULL
) == -EAGAIN
) {
4838 rpc_restart_call_prepare(task
);
4844 static int nfs4_commit_done(struct rpc_task
*task
, struct nfs_commit_data
*data
)
4846 if (!nfs4_sequence_done(task
, &data
->res
.seq_res
))
4848 return data
->commit_done_cb(task
, data
);
4851 static void nfs4_proc_commit_setup(struct nfs_commit_data
*data
, struct rpc_message
*msg
)
4853 struct nfs_server
*server
= NFS_SERVER(data
->inode
);
4855 if (data
->commit_done_cb
== NULL
)
4856 data
->commit_done_cb
= nfs4_commit_done_cb
;
4857 data
->res
.server
= server
;
4858 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_COMMIT
];
4859 nfs4_init_sequence(&data
->args
.seq_args
, &data
->res
.seq_res
, 1);
4862 struct nfs4_renewdata
{
4863 struct nfs_client
*client
;
4864 unsigned long timestamp
;
4868 * nfs4_proc_async_renew(): This is not one of the nfs_rpc_ops; it is a special
4869 * standalone procedure for queueing an asynchronous RENEW.
4871 static void nfs4_renew_release(void *calldata
)
4873 struct nfs4_renewdata
*data
= calldata
;
4874 struct nfs_client
*clp
= data
->client
;
4876 if (atomic_read(&clp
->cl_count
) > 1)
4877 nfs4_schedule_state_renewal(clp
);
4878 nfs_put_client(clp
);
4882 static void nfs4_renew_done(struct rpc_task
*task
, void *calldata
)
4884 struct nfs4_renewdata
*data
= calldata
;
4885 struct nfs_client
*clp
= data
->client
;
4886 unsigned long timestamp
= data
->timestamp
;
4888 trace_nfs4_renew_async(clp
, task
->tk_status
);
4889 switch (task
->tk_status
) {
4892 case -NFS4ERR_LEASE_MOVED
:
4893 nfs4_schedule_lease_moved_recovery(clp
);
4896 /* Unless we're shutting down, schedule state recovery! */
4897 if (test_bit(NFS_CS_RENEWD
, &clp
->cl_res_state
) == 0)
4899 if (task
->tk_status
!= NFS4ERR_CB_PATH_DOWN
) {
4900 nfs4_schedule_lease_recovery(clp
);
4903 nfs4_schedule_path_down_recovery(clp
);
4905 do_renew_lease(clp
, timestamp
);
4908 static const struct rpc_call_ops nfs4_renew_ops
= {
4909 .rpc_call_done
= nfs4_renew_done
,
4910 .rpc_release
= nfs4_renew_release
,
4913 static int nfs4_proc_async_renew(struct nfs_client
*clp
, struct rpc_cred
*cred
, unsigned renew_flags
)
4915 struct rpc_message msg
= {
4916 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RENEW
],
4920 struct nfs4_renewdata
*data
;
4922 if (renew_flags
== 0)
4924 if (!atomic_inc_not_zero(&clp
->cl_count
))
4926 data
= kmalloc(sizeof(*data
), GFP_NOFS
);
4930 data
->timestamp
= jiffies
;
4931 return rpc_call_async(clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
,
4932 &nfs4_renew_ops
, data
);
4935 static int nfs4_proc_renew(struct nfs_client
*clp
, struct rpc_cred
*cred
)
4937 struct rpc_message msg
= {
4938 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RENEW
],
4942 unsigned long now
= jiffies
;
4945 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
4948 do_renew_lease(clp
, now
);
4952 static inline int nfs4_server_supports_acls(struct nfs_server
*server
)
4954 return server
->caps
& NFS_CAP_ACLS
;
4957 /* Assuming that XATTR_SIZE_MAX is a multiple of PAGE_SIZE, and that
4958 * it's OK to put sizeof(void) * (XATTR_SIZE_MAX/PAGE_SIZE) bytes on
4961 #define NFS4ACL_MAXPAGES DIV_ROUND_UP(XATTR_SIZE_MAX, PAGE_SIZE)
4963 static int buf_to_pages_noslab(const void *buf
, size_t buflen
,
4964 struct page
**pages
)
4966 struct page
*newpage
, **spages
;
4972 len
= min_t(size_t, PAGE_SIZE
, buflen
);
4973 newpage
= alloc_page(GFP_KERNEL
);
4975 if (newpage
== NULL
)
4977 memcpy(page_address(newpage
), buf
, len
);
4982 } while (buflen
!= 0);
4988 __free_page(spages
[rc
-1]);
4992 struct nfs4_cached_acl
{
4998 static void nfs4_set_cached_acl(struct inode
*inode
, struct nfs4_cached_acl
*acl
)
5000 struct nfs_inode
*nfsi
= NFS_I(inode
);
5002 spin_lock(&inode
->i_lock
);
5003 kfree(nfsi
->nfs4_acl
);
5004 nfsi
->nfs4_acl
= acl
;
5005 spin_unlock(&inode
->i_lock
);
5008 static void nfs4_zap_acl_attr(struct inode
*inode
)
5010 nfs4_set_cached_acl(inode
, NULL
);
5013 static inline ssize_t
nfs4_read_cached_acl(struct inode
*inode
, char *buf
, size_t buflen
)
5015 struct nfs_inode
*nfsi
= NFS_I(inode
);
5016 struct nfs4_cached_acl
*acl
;
5019 spin_lock(&inode
->i_lock
);
5020 acl
= nfsi
->nfs4_acl
;
5023 if (buf
== NULL
) /* user is just asking for length */
5025 if (acl
->cached
== 0)
5027 ret
= -ERANGE
; /* see getxattr(2) man page */
5028 if (acl
->len
> buflen
)
5030 memcpy(buf
, acl
->data
, acl
->len
);
5034 spin_unlock(&inode
->i_lock
);
5038 static void nfs4_write_cached_acl(struct inode
*inode
, struct page
**pages
, size_t pgbase
, size_t acl_len
)
5040 struct nfs4_cached_acl
*acl
;
5041 size_t buflen
= sizeof(*acl
) + acl_len
;
5043 if (buflen
<= PAGE_SIZE
) {
5044 acl
= kmalloc(buflen
, GFP_KERNEL
);
5048 _copy_from_pages(acl
->data
, pages
, pgbase
, acl_len
);
5050 acl
= kmalloc(sizeof(*acl
), GFP_KERNEL
);
5057 nfs4_set_cached_acl(inode
, acl
);
5061 * The getxattr API returns the required buffer length when called with a
5062 * NULL buf. The NFSv4 acl tool then calls getxattr again after allocating
5063 * the required buf. On a NULL buf, we send a page of data to the server
5064 * guessing that the ACL request can be serviced by a page. If so, we cache
5065 * up to the page of ACL data, and the 2nd call to getxattr is serviced by
5066 * the cache. If not so, we throw away the page, and cache the required
5067 * length. The next getxattr call will then produce another round trip to
5068 * the server, this time with the input buf of the required size.
5070 static ssize_t
__nfs4_get_acl_uncached(struct inode
*inode
, void *buf
, size_t buflen
)
5072 struct page
*pages
[NFS4ACL_MAXPAGES
] = {NULL
, };
5073 struct nfs_getaclargs args
= {
5074 .fh
= NFS_FH(inode
),
5078 struct nfs_getaclres res
= {
5081 struct rpc_message msg
= {
5082 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GETACL
],
5086 unsigned int npages
= DIV_ROUND_UP(buflen
, PAGE_SIZE
);
5087 int ret
= -ENOMEM
, i
;
5089 /* As long as we're doing a round trip to the server anyway,
5090 * let's be prepared for a page of acl data. */
5093 if (npages
> ARRAY_SIZE(pages
))
5096 for (i
= 0; i
< npages
; i
++) {
5097 pages
[i
] = alloc_page(GFP_KERNEL
);
5102 /* for decoding across pages */
5103 res
.acl_scratch
= alloc_page(GFP_KERNEL
);
5104 if (!res
.acl_scratch
)
5107 args
.acl_len
= npages
* PAGE_SIZE
;
5109 dprintk("%s buf %p buflen %zu npages %d args.acl_len %zu\n",
5110 __func__
, buf
, buflen
, npages
, args
.acl_len
);
5111 ret
= nfs4_call_sync(NFS_SERVER(inode
)->client
, NFS_SERVER(inode
),
5112 &msg
, &args
.seq_args
, &res
.seq_res
, 0);
5116 /* Handle the case where the passed-in buffer is too short */
5117 if (res
.acl_flags
& NFS4_ACL_TRUNC
) {
5118 /* Did the user only issue a request for the acl length? */
5124 nfs4_write_cached_acl(inode
, pages
, res
.acl_data_offset
, res
.acl_len
);
5126 if (res
.acl_len
> buflen
) {
5130 _copy_from_pages(buf
, pages
, res
.acl_data_offset
, res
.acl_len
);
5135 for (i
= 0; i
< npages
; i
++)
5137 __free_page(pages
[i
]);
5138 if (res
.acl_scratch
)
5139 __free_page(res
.acl_scratch
);
5143 static ssize_t
nfs4_get_acl_uncached(struct inode
*inode
, void *buf
, size_t buflen
)
5145 struct nfs4_exception exception
= { };
5148 ret
= __nfs4_get_acl_uncached(inode
, buf
, buflen
);
5149 trace_nfs4_get_acl(inode
, ret
);
5152 ret
= nfs4_handle_exception(NFS_SERVER(inode
), ret
, &exception
);
5153 } while (exception
.retry
);
5157 static ssize_t
nfs4_proc_get_acl(struct inode
*inode
, void *buf
, size_t buflen
)
5159 struct nfs_server
*server
= NFS_SERVER(inode
);
5162 if (!nfs4_server_supports_acls(server
))
5164 ret
= nfs_revalidate_inode(server
, inode
);
5167 if (NFS_I(inode
)->cache_validity
& NFS_INO_INVALID_ACL
)
5168 nfs_zap_acl_cache(inode
);
5169 ret
= nfs4_read_cached_acl(inode
, buf
, buflen
);
5171 /* -ENOENT is returned if there is no ACL or if there is an ACL
5172 * but no cached acl data, just the acl length */
5174 return nfs4_get_acl_uncached(inode
, buf
, buflen
);
5177 static int __nfs4_proc_set_acl(struct inode
*inode
, const void *buf
, size_t buflen
)
5179 struct nfs_server
*server
= NFS_SERVER(inode
);
5180 struct page
*pages
[NFS4ACL_MAXPAGES
];
5181 struct nfs_setaclargs arg
= {
5182 .fh
= NFS_FH(inode
),
5186 struct nfs_setaclres res
;
5187 struct rpc_message msg
= {
5188 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETACL
],
5192 unsigned int npages
= DIV_ROUND_UP(buflen
, PAGE_SIZE
);
5195 if (!nfs4_server_supports_acls(server
))
5197 if (npages
> ARRAY_SIZE(pages
))
5199 i
= buf_to_pages_noslab(buf
, buflen
, arg
.acl_pages
);
5202 nfs4_inode_return_delegation(inode
);
5203 ret
= nfs4_call_sync(server
->client
, server
, &msg
, &arg
.seq_args
, &res
.seq_res
, 1);
5206 * Free each page after tx, so the only ref left is
5207 * held by the network stack
5210 put_page(pages
[i
-1]);
5213 * Acl update can result in inode attribute update.
5214 * so mark the attribute cache invalid.
5216 spin_lock(&inode
->i_lock
);
5217 NFS_I(inode
)->cache_validity
|= NFS_INO_INVALID_ATTR
;
5218 spin_unlock(&inode
->i_lock
);
5219 nfs_access_zap_cache(inode
);
5220 nfs_zap_acl_cache(inode
);
5224 static int nfs4_proc_set_acl(struct inode
*inode
, const void *buf
, size_t buflen
)
5226 struct nfs4_exception exception
= { };
5229 err
= __nfs4_proc_set_acl(inode
, buf
, buflen
);
5230 trace_nfs4_set_acl(inode
, err
);
5231 err
= nfs4_handle_exception(NFS_SERVER(inode
), err
,
5233 } while (exception
.retry
);
5237 #ifdef CONFIG_NFS_V4_SECURITY_LABEL
5238 static int _nfs4_get_security_label(struct inode
*inode
, void *buf
,
5241 struct nfs_server
*server
= NFS_SERVER(inode
);
5242 struct nfs_fattr fattr
;
5243 struct nfs4_label label
= {0, 0, buflen
, buf
};
5245 u32 bitmask
[3] = { 0, 0, FATTR4_WORD2_SECURITY_LABEL
};
5246 struct nfs4_getattr_arg arg
= {
5247 .fh
= NFS_FH(inode
),
5250 struct nfs4_getattr_res res
= {
5255 struct rpc_message msg
= {
5256 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GETATTR
],
5262 nfs_fattr_init(&fattr
);
5264 ret
= nfs4_call_sync(server
->client
, server
, &msg
, &arg
.seq_args
, &res
.seq_res
, 0);
5267 if (!(fattr
.valid
& NFS_ATTR_FATTR_V4_SECURITY_LABEL
))
5269 if (buflen
< label
.len
)
5274 static int nfs4_get_security_label(struct inode
*inode
, void *buf
,
5277 struct nfs4_exception exception
= { };
5280 if (!nfs_server_capable(inode
, NFS_CAP_SECURITY_LABEL
))
5284 err
= _nfs4_get_security_label(inode
, buf
, buflen
);
5285 trace_nfs4_get_security_label(inode
, err
);
5286 err
= nfs4_handle_exception(NFS_SERVER(inode
), err
,
5288 } while (exception
.retry
);
5292 static int _nfs4_do_set_security_label(struct inode
*inode
,
5293 struct nfs4_label
*ilabel
,
5294 struct nfs_fattr
*fattr
,
5295 struct nfs4_label
*olabel
)
5298 struct iattr sattr
= {0};
5299 struct nfs_server
*server
= NFS_SERVER(inode
);
5300 const u32 bitmask
[3] = { 0, 0, FATTR4_WORD2_SECURITY_LABEL
};
5301 struct nfs_setattrargs arg
= {
5302 .fh
= NFS_FH(inode
),
5308 struct nfs_setattrres res
= {
5313 struct rpc_message msg
= {
5314 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETATTR
],
5320 nfs4_stateid_copy(&arg
.stateid
, &zero_stateid
);
5322 status
= nfs4_call_sync(server
->client
, server
, &msg
, &arg
.seq_args
, &res
.seq_res
, 1);
5324 dprintk("%s failed: %d\n", __func__
, status
);
5329 static int nfs4_do_set_security_label(struct inode
*inode
,
5330 struct nfs4_label
*ilabel
,
5331 struct nfs_fattr
*fattr
,
5332 struct nfs4_label
*olabel
)
5334 struct nfs4_exception exception
= { };
5338 err
= _nfs4_do_set_security_label(inode
, ilabel
,
5340 trace_nfs4_set_security_label(inode
, err
);
5341 err
= nfs4_handle_exception(NFS_SERVER(inode
), err
,
5343 } while (exception
.retry
);
5348 nfs4_set_security_label(struct inode
*inode
, const void *buf
, size_t buflen
)
5350 struct nfs4_label ilabel
, *olabel
= NULL
;
5351 struct nfs_fattr fattr
;
5352 struct rpc_cred
*cred
;
5355 if (!nfs_server_capable(inode
, NFS_CAP_SECURITY_LABEL
))
5358 nfs_fattr_init(&fattr
);
5362 ilabel
.label
= (char *)buf
;
5363 ilabel
.len
= buflen
;
5365 cred
= rpc_lookup_cred();
5367 return PTR_ERR(cred
);
5369 olabel
= nfs4_label_alloc(NFS_SERVER(inode
), GFP_KERNEL
);
5370 if (IS_ERR(olabel
)) {
5371 status
= -PTR_ERR(olabel
);
5375 status
= nfs4_do_set_security_label(inode
, &ilabel
, &fattr
, olabel
);
5377 nfs_setsecurity(inode
, &fattr
, olabel
);
5379 nfs4_label_free(olabel
);
5384 #endif /* CONFIG_NFS_V4_SECURITY_LABEL */
5387 static void nfs4_init_boot_verifier(const struct nfs_client
*clp
,
5388 nfs4_verifier
*bootverf
)
5392 if (test_bit(NFS4CLNT_PURGE_STATE
, &clp
->cl_state
)) {
5393 /* An impossible timestamp guarantees this value
5394 * will never match a generated boot time. */
5395 verf
[0] = cpu_to_be32(U32_MAX
);
5396 verf
[1] = cpu_to_be32(U32_MAX
);
5398 struct nfs_net
*nn
= net_generic(clp
->cl_net
, nfs_net_id
);
5399 u64 ns
= ktime_to_ns(nn
->boot_time
);
5401 verf
[0] = cpu_to_be32(ns
>> 32);
5402 verf
[1] = cpu_to_be32(ns
);
5404 memcpy(bootverf
->data
, verf
, sizeof(bootverf
->data
));
5408 nfs4_init_nonuniform_client_string(struct nfs_client
*clp
)
5413 if (clp
->cl_owner_id
!= NULL
)
5417 len
= 14 + strlen(clp
->cl_ipaddr
) + 1 +
5418 strlen(rpc_peeraddr2str(clp
->cl_rpcclient
, RPC_DISPLAY_ADDR
)) +
5420 strlen(rpc_peeraddr2str(clp
->cl_rpcclient
, RPC_DISPLAY_PROTO
)) +
5424 if (len
> NFS4_OPAQUE_LIMIT
+ 1)
5428 * Since this string is allocated at mount time, and held until the
5429 * nfs_client is destroyed, we can use GFP_KERNEL here w/o worrying
5430 * about a memory-reclaim deadlock.
5432 str
= kmalloc(len
, GFP_KERNEL
);
5437 scnprintf(str
, len
, "Linux NFSv4.0 %s/%s %s",
5439 rpc_peeraddr2str(clp
->cl_rpcclient
, RPC_DISPLAY_ADDR
),
5440 rpc_peeraddr2str(clp
->cl_rpcclient
, RPC_DISPLAY_PROTO
));
5443 clp
->cl_owner_id
= str
;
5448 nfs4_init_uniquifier_client_string(struct nfs_client
*clp
)
5453 len
= 10 + 10 + 1 + 10 + 1 +
5454 strlen(nfs4_client_id_uniquifier
) + 1 +
5455 strlen(clp
->cl_rpcclient
->cl_nodename
) + 1;
5457 if (len
> NFS4_OPAQUE_LIMIT
+ 1)
5461 * Since this string is allocated at mount time, and held until the
5462 * nfs_client is destroyed, we can use GFP_KERNEL here w/o worrying
5463 * about a memory-reclaim deadlock.
5465 str
= kmalloc(len
, GFP_KERNEL
);
5469 scnprintf(str
, len
, "Linux NFSv%u.%u %s/%s",
5470 clp
->rpc_ops
->version
, clp
->cl_minorversion
,
5471 nfs4_client_id_uniquifier
,
5472 clp
->cl_rpcclient
->cl_nodename
);
5473 clp
->cl_owner_id
= str
;
5478 nfs4_init_uniform_client_string(struct nfs_client
*clp
)
5483 if (clp
->cl_owner_id
!= NULL
)
5486 if (nfs4_client_id_uniquifier
[0] != '\0')
5487 return nfs4_init_uniquifier_client_string(clp
);
5489 len
= 10 + 10 + 1 + 10 + 1 +
5490 strlen(clp
->cl_rpcclient
->cl_nodename
) + 1;
5492 if (len
> NFS4_OPAQUE_LIMIT
+ 1)
5496 * Since this string is allocated at mount time, and held until the
5497 * nfs_client is destroyed, we can use GFP_KERNEL here w/o worrying
5498 * about a memory-reclaim deadlock.
5500 str
= kmalloc(len
, GFP_KERNEL
);
5504 scnprintf(str
, len
, "Linux NFSv%u.%u %s",
5505 clp
->rpc_ops
->version
, clp
->cl_minorversion
,
5506 clp
->cl_rpcclient
->cl_nodename
);
5507 clp
->cl_owner_id
= str
;
5512 * nfs4_callback_up_net() starts only "tcp" and "tcp6" callback
5513 * services. Advertise one based on the address family of the
5517 nfs4_init_callback_netid(const struct nfs_client
*clp
, char *buf
, size_t len
)
5519 if (strchr(clp
->cl_ipaddr
, ':') != NULL
)
5520 return scnprintf(buf
, len
, "tcp6");
5522 return scnprintf(buf
, len
, "tcp");
5525 static void nfs4_setclientid_done(struct rpc_task
*task
, void *calldata
)
5527 struct nfs4_setclientid
*sc
= calldata
;
5529 if (task
->tk_status
== 0)
5530 sc
->sc_cred
= get_rpccred(task
->tk_rqstp
->rq_cred
);
5533 static const struct rpc_call_ops nfs4_setclientid_ops
= {
5534 .rpc_call_done
= nfs4_setclientid_done
,
5538 * nfs4_proc_setclientid - Negotiate client ID
5539 * @clp: state data structure
5540 * @program: RPC program for NFSv4 callback service
5541 * @port: IP port number for NFS4 callback service
5542 * @cred: RPC credential to use for this call
5543 * @res: where to place the result
5545 * Returns zero, a negative errno, or a negative NFS4ERR status code.
5547 int nfs4_proc_setclientid(struct nfs_client
*clp
, u32 program
,
5548 unsigned short port
, struct rpc_cred
*cred
,
5549 struct nfs4_setclientid_res
*res
)
5551 nfs4_verifier sc_verifier
;
5552 struct nfs4_setclientid setclientid
= {
5553 .sc_verifier
= &sc_verifier
,
5557 struct rpc_message msg
= {
5558 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETCLIENTID
],
5559 .rpc_argp
= &setclientid
,
5563 struct rpc_task
*task
;
5564 struct rpc_task_setup task_setup_data
= {
5565 .rpc_client
= clp
->cl_rpcclient
,
5566 .rpc_message
= &msg
,
5567 .callback_ops
= &nfs4_setclientid_ops
,
5568 .callback_data
= &setclientid
,
5569 .flags
= RPC_TASK_TIMEOUT
,
5573 /* nfs_client_id4 */
5574 nfs4_init_boot_verifier(clp
, &sc_verifier
);
5576 if (test_bit(NFS_CS_MIGRATION
, &clp
->cl_flags
))
5577 status
= nfs4_init_uniform_client_string(clp
);
5579 status
= nfs4_init_nonuniform_client_string(clp
);
5585 setclientid
.sc_netid_len
=
5586 nfs4_init_callback_netid(clp
,
5587 setclientid
.sc_netid
,
5588 sizeof(setclientid
.sc_netid
));
5589 setclientid
.sc_uaddr_len
= scnprintf(setclientid
.sc_uaddr
,
5590 sizeof(setclientid
.sc_uaddr
), "%s.%u.%u",
5591 clp
->cl_ipaddr
, port
>> 8, port
& 255);
5593 dprintk("NFS call setclientid auth=%s, '%s'\n",
5594 clp
->cl_rpcclient
->cl_auth
->au_ops
->au_name
,
5596 task
= rpc_run_task(&task_setup_data
);
5598 status
= PTR_ERR(task
);
5601 status
= task
->tk_status
;
5602 if (setclientid
.sc_cred
) {
5603 clp
->cl_acceptor
= rpcauth_stringify_acceptor(setclientid
.sc_cred
);
5604 put_rpccred(setclientid
.sc_cred
);
5608 trace_nfs4_setclientid(clp
, status
);
5609 dprintk("NFS reply setclientid: %d\n", status
);
5614 * nfs4_proc_setclientid_confirm - Confirm client ID
5615 * @clp: state data structure
5616 * @res: result of a previous SETCLIENTID
5617 * @cred: RPC credential to use for this call
5619 * Returns zero, a negative errno, or a negative NFS4ERR status code.
5621 int nfs4_proc_setclientid_confirm(struct nfs_client
*clp
,
5622 struct nfs4_setclientid_res
*arg
,
5623 struct rpc_cred
*cred
)
5625 struct rpc_message msg
= {
5626 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETCLIENTID_CONFIRM
],
5632 dprintk("NFS call setclientid_confirm auth=%s, (client ID %llx)\n",
5633 clp
->cl_rpcclient
->cl_auth
->au_ops
->au_name
,
5635 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
5636 trace_nfs4_setclientid_confirm(clp
, status
);
5637 dprintk("NFS reply setclientid_confirm: %d\n", status
);
5641 struct nfs4_delegreturndata
{
5642 struct nfs4_delegreturnargs args
;
5643 struct nfs4_delegreturnres res
;
5645 nfs4_stateid stateid
;
5646 unsigned long timestamp
;
5648 struct nfs4_layoutreturn_args arg
;
5649 struct nfs4_layoutreturn_res res
;
5650 struct nfs4_xdr_opaque_data ld_private
;
5654 struct nfs_fattr fattr
;
5656 struct inode
*inode
;
5659 static void nfs4_delegreturn_done(struct rpc_task
*task
, void *calldata
)
5661 struct nfs4_delegreturndata
*data
= calldata
;
5663 if (!nfs4_sequence_done(task
, &data
->res
.seq_res
))
5666 trace_nfs4_delegreturn_exit(&data
->args
, &data
->res
, task
->tk_status
);
5668 /* Handle Layoutreturn errors */
5669 if (data
->args
.lr_args
&& task
->tk_status
!= 0) {
5670 switch(data
->res
.lr_ret
) {
5672 data
->res
.lr_ret
= -NFS4ERR_NOMATCHING_LAYOUT
;
5675 data
->args
.lr_args
= NULL
;
5676 data
->res
.lr_res
= NULL
;
5678 case -NFS4ERR_ADMIN_REVOKED
:
5679 case -NFS4ERR_DELEG_REVOKED
:
5680 case -NFS4ERR_EXPIRED
:
5681 case -NFS4ERR_BAD_STATEID
:
5682 case -NFS4ERR_OLD_STATEID
:
5683 case -NFS4ERR_UNKNOWN_LAYOUTTYPE
:
5684 case -NFS4ERR_WRONG_CRED
:
5685 data
->args
.lr_args
= NULL
;
5686 data
->res
.lr_res
= NULL
;
5687 data
->res
.lr_ret
= 0;
5688 rpc_restart_call_prepare(task
);
5693 switch (task
->tk_status
) {
5695 renew_lease(data
->res
.server
, data
->timestamp
);
5697 case -NFS4ERR_ADMIN_REVOKED
:
5698 case -NFS4ERR_DELEG_REVOKED
:
5699 case -NFS4ERR_EXPIRED
:
5700 nfs4_free_revoked_stateid(data
->res
.server
,
5702 task
->tk_msg
.rpc_cred
);
5703 case -NFS4ERR_BAD_STATEID
:
5704 case -NFS4ERR_OLD_STATEID
:
5705 case -NFS4ERR_STALE_STATEID
:
5706 task
->tk_status
= 0;
5708 case -NFS4ERR_ACCESS
:
5709 if (data
->args
.bitmask
) {
5710 data
->args
.bitmask
= NULL
;
5711 data
->res
.fattr
= NULL
;
5712 task
->tk_status
= 0;
5713 rpc_restart_call_prepare(task
);
5717 if (nfs4_async_handle_error(task
, data
->res
.server
,
5718 NULL
, NULL
) == -EAGAIN
) {
5719 rpc_restart_call_prepare(task
);
5723 data
->rpc_status
= task
->tk_status
;
5726 static void nfs4_delegreturn_release(void *calldata
)
5728 struct nfs4_delegreturndata
*data
= calldata
;
5729 struct inode
*inode
= data
->inode
;
5733 pnfs_roc_release(&data
->lr
.arg
, &data
->lr
.res
,
5735 nfs_post_op_update_inode_force_wcc(inode
, &data
->fattr
);
5736 nfs_iput_and_deactive(inode
);
5741 static void nfs4_delegreturn_prepare(struct rpc_task
*task
, void *data
)
5743 struct nfs4_delegreturndata
*d_data
;
5745 d_data
= (struct nfs4_delegreturndata
*)data
;
5747 if (!d_data
->lr
.roc
&& nfs4_wait_on_layoutreturn(d_data
->inode
, task
))
5750 nfs4_setup_sequence(d_data
->res
.server
,
5751 &d_data
->args
.seq_args
,
5752 &d_data
->res
.seq_res
,
5756 static const struct rpc_call_ops nfs4_delegreturn_ops
= {
5757 .rpc_call_prepare
= nfs4_delegreturn_prepare
,
5758 .rpc_call_done
= nfs4_delegreturn_done
,
5759 .rpc_release
= nfs4_delegreturn_release
,
5762 static int _nfs4_proc_delegreturn(struct inode
*inode
, struct rpc_cred
*cred
, const nfs4_stateid
*stateid
, int issync
)
5764 struct nfs4_delegreturndata
*data
;
5765 struct nfs_server
*server
= NFS_SERVER(inode
);
5766 struct rpc_task
*task
;
5767 struct rpc_message msg
= {
5768 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_DELEGRETURN
],
5771 struct rpc_task_setup task_setup_data
= {
5772 .rpc_client
= server
->client
,
5773 .rpc_message
= &msg
,
5774 .callback_ops
= &nfs4_delegreturn_ops
,
5775 .flags
= RPC_TASK_ASYNC
,
5779 data
= kzalloc(sizeof(*data
), GFP_NOFS
);
5782 nfs4_init_sequence(&data
->args
.seq_args
, &data
->res
.seq_res
, 1);
5784 nfs4_state_protect(server
->nfs_client
,
5785 NFS_SP4_MACH_CRED_CLEANUP
,
5786 &task_setup_data
.rpc_client
, &msg
);
5788 data
->args
.fhandle
= &data
->fh
;
5789 data
->args
.stateid
= &data
->stateid
;
5790 data
->args
.bitmask
= server
->cache_consistency_bitmask
;
5791 nfs_copy_fh(&data
->fh
, NFS_FH(inode
));
5792 nfs4_stateid_copy(&data
->stateid
, stateid
);
5793 data
->res
.fattr
= &data
->fattr
;
5794 data
->res
.server
= server
;
5795 data
->res
.lr_ret
= -NFS4ERR_NOMATCHING_LAYOUT
;
5796 data
->lr
.arg
.ld_private
= &data
->lr
.ld_private
;
5797 nfs_fattr_init(data
->res
.fattr
);
5798 data
->timestamp
= jiffies
;
5799 data
->rpc_status
= 0;
5800 data
->lr
.roc
= pnfs_roc(inode
, &data
->lr
.arg
, &data
->lr
.res
, cred
);
5801 data
->inode
= nfs_igrab_and_active(inode
);
5804 data
->args
.lr_args
= &data
->lr
.arg
;
5805 data
->res
.lr_res
= &data
->lr
.res
;
5807 } else if (data
->lr
.roc
) {
5808 pnfs_roc_release(&data
->lr
.arg
, &data
->lr
.res
, 0);
5809 data
->lr
.roc
= false;
5812 task_setup_data
.callback_data
= data
;
5813 msg
.rpc_argp
= &data
->args
;
5814 msg
.rpc_resp
= &data
->res
;
5815 task
= rpc_run_task(&task_setup_data
);
5817 return PTR_ERR(task
);
5820 status
= nfs4_wait_for_completion_rpc_task(task
);
5823 status
= data
->rpc_status
;
5829 int nfs4_proc_delegreturn(struct inode
*inode
, struct rpc_cred
*cred
, const nfs4_stateid
*stateid
, int issync
)
5831 struct nfs_server
*server
= NFS_SERVER(inode
);
5832 struct nfs4_exception exception
= { };
5835 err
= _nfs4_proc_delegreturn(inode
, cred
, stateid
, issync
);
5836 trace_nfs4_delegreturn(inode
, stateid
, err
);
5838 case -NFS4ERR_STALE_STATEID
:
5839 case -NFS4ERR_EXPIRED
:
5843 err
= nfs4_handle_exception(server
, err
, &exception
);
5844 } while (exception
.retry
);
5848 static int _nfs4_proc_getlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
5850 struct inode
*inode
= state
->inode
;
5851 struct nfs_server
*server
= NFS_SERVER(inode
);
5852 struct nfs_client
*clp
= server
->nfs_client
;
5853 struct nfs_lockt_args arg
= {
5854 .fh
= NFS_FH(inode
),
5857 struct nfs_lockt_res res
= {
5860 struct rpc_message msg
= {
5861 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOCKT
],
5864 .rpc_cred
= state
->owner
->so_cred
,
5866 struct nfs4_lock_state
*lsp
;
5869 arg
.lock_owner
.clientid
= clp
->cl_clientid
;
5870 status
= nfs4_set_lock_state(state
, request
);
5873 lsp
= request
->fl_u
.nfs4_fl
.owner
;
5874 arg
.lock_owner
.id
= lsp
->ls_seqid
.owner_id
;
5875 arg
.lock_owner
.s_dev
= server
->s_dev
;
5876 status
= nfs4_call_sync(server
->client
, server
, &msg
, &arg
.seq_args
, &res
.seq_res
, 1);
5879 request
->fl_type
= F_UNLCK
;
5881 case -NFS4ERR_DENIED
:
5884 request
->fl_ops
->fl_release_private(request
);
5885 request
->fl_ops
= NULL
;
5890 static int nfs4_proc_getlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
5892 struct nfs4_exception exception
= { };
5896 err
= _nfs4_proc_getlk(state
, cmd
, request
);
5897 trace_nfs4_get_lock(request
, state
, cmd
, err
);
5898 err
= nfs4_handle_exception(NFS_SERVER(state
->inode
), err
,
5900 } while (exception
.retry
);
5904 struct nfs4_unlockdata
{
5905 struct nfs_locku_args arg
;
5906 struct nfs_locku_res res
;
5907 struct nfs4_lock_state
*lsp
;
5908 struct nfs_open_context
*ctx
;
5909 struct file_lock fl
;
5910 struct nfs_server
*server
;
5911 unsigned long timestamp
;
5914 static struct nfs4_unlockdata
*nfs4_alloc_unlockdata(struct file_lock
*fl
,
5915 struct nfs_open_context
*ctx
,
5916 struct nfs4_lock_state
*lsp
,
5917 struct nfs_seqid
*seqid
)
5919 struct nfs4_unlockdata
*p
;
5920 struct inode
*inode
= lsp
->ls_state
->inode
;
5922 p
= kzalloc(sizeof(*p
), GFP_NOFS
);
5925 p
->arg
.fh
= NFS_FH(inode
);
5927 p
->arg
.seqid
= seqid
;
5928 p
->res
.seqid
= seqid
;
5930 atomic_inc(&lsp
->ls_count
);
5931 /* Ensure we don't close file until we're done freeing locks! */
5932 p
->ctx
= get_nfs_open_context(ctx
);
5933 memcpy(&p
->fl
, fl
, sizeof(p
->fl
));
5934 p
->server
= NFS_SERVER(inode
);
5938 static void nfs4_locku_release_calldata(void *data
)
5940 struct nfs4_unlockdata
*calldata
= data
;
5941 nfs_free_seqid(calldata
->arg
.seqid
);
5942 nfs4_put_lock_state(calldata
->lsp
);
5943 put_nfs_open_context(calldata
->ctx
);
5947 static void nfs4_locku_done(struct rpc_task
*task
, void *data
)
5949 struct nfs4_unlockdata
*calldata
= data
;
5951 if (!nfs4_sequence_done(task
, &calldata
->res
.seq_res
))
5953 switch (task
->tk_status
) {
5955 renew_lease(calldata
->server
, calldata
->timestamp
);
5956 locks_lock_inode_wait(calldata
->lsp
->ls_state
->inode
, &calldata
->fl
);
5957 if (nfs4_update_lock_stateid(calldata
->lsp
,
5958 &calldata
->res
.stateid
))
5960 case -NFS4ERR_ADMIN_REVOKED
:
5961 case -NFS4ERR_EXPIRED
:
5962 nfs4_free_revoked_stateid(calldata
->server
,
5963 &calldata
->arg
.stateid
,
5964 task
->tk_msg
.rpc_cred
);
5965 case -NFS4ERR_BAD_STATEID
:
5966 case -NFS4ERR_OLD_STATEID
:
5967 case -NFS4ERR_STALE_STATEID
:
5968 if (!nfs4_stateid_match(&calldata
->arg
.stateid
,
5969 &calldata
->lsp
->ls_stateid
))
5970 rpc_restart_call_prepare(task
);
5973 if (nfs4_async_handle_error(task
, calldata
->server
,
5974 NULL
, NULL
) == -EAGAIN
)
5975 rpc_restart_call_prepare(task
);
5977 nfs_release_seqid(calldata
->arg
.seqid
);
5980 static void nfs4_locku_prepare(struct rpc_task
*task
, void *data
)
5982 struct nfs4_unlockdata
*calldata
= data
;
5984 if (nfs_wait_on_sequence(calldata
->arg
.seqid
, task
) != 0)
5986 nfs4_stateid_copy(&calldata
->arg
.stateid
, &calldata
->lsp
->ls_stateid
);
5987 if (test_bit(NFS_LOCK_INITIALIZED
, &calldata
->lsp
->ls_flags
) == 0) {
5988 /* Note: exit _without_ running nfs4_locku_done */
5991 calldata
->timestamp
= jiffies
;
5992 if (nfs4_setup_sequence(calldata
->server
,
5993 &calldata
->arg
.seq_args
,
5994 &calldata
->res
.seq_res
,
5996 nfs_release_seqid(calldata
->arg
.seqid
);
5999 task
->tk_action
= NULL
;
6001 nfs4_sequence_done(task
, &calldata
->res
.seq_res
);
6004 static const struct rpc_call_ops nfs4_locku_ops
= {
6005 .rpc_call_prepare
= nfs4_locku_prepare
,
6006 .rpc_call_done
= nfs4_locku_done
,
6007 .rpc_release
= nfs4_locku_release_calldata
,
6010 static struct rpc_task
*nfs4_do_unlck(struct file_lock
*fl
,
6011 struct nfs_open_context
*ctx
,
6012 struct nfs4_lock_state
*lsp
,
6013 struct nfs_seqid
*seqid
)
6015 struct nfs4_unlockdata
*data
;
6016 struct rpc_message msg
= {
6017 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOCKU
],
6018 .rpc_cred
= ctx
->cred
,
6020 struct rpc_task_setup task_setup_data
= {
6021 .rpc_client
= NFS_CLIENT(lsp
->ls_state
->inode
),
6022 .rpc_message
= &msg
,
6023 .callback_ops
= &nfs4_locku_ops
,
6024 .workqueue
= nfsiod_workqueue
,
6025 .flags
= RPC_TASK_ASYNC
,
6028 nfs4_state_protect(NFS_SERVER(lsp
->ls_state
->inode
)->nfs_client
,
6029 NFS_SP4_MACH_CRED_CLEANUP
, &task_setup_data
.rpc_client
, &msg
);
6031 /* Ensure this is an unlock - when canceling a lock, the
6032 * canceled lock is passed in, and it won't be an unlock.
6034 fl
->fl_type
= F_UNLCK
;
6036 data
= nfs4_alloc_unlockdata(fl
, ctx
, lsp
, seqid
);
6038 nfs_free_seqid(seqid
);
6039 return ERR_PTR(-ENOMEM
);
6042 nfs4_init_sequence(&data
->arg
.seq_args
, &data
->res
.seq_res
, 1);
6043 msg
.rpc_argp
= &data
->arg
;
6044 msg
.rpc_resp
= &data
->res
;
6045 task_setup_data
.callback_data
= data
;
6046 return rpc_run_task(&task_setup_data
);
6049 static int nfs4_proc_unlck(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
6051 struct inode
*inode
= state
->inode
;
6052 struct nfs4_state_owner
*sp
= state
->owner
;
6053 struct nfs_inode
*nfsi
= NFS_I(inode
);
6054 struct nfs_seqid
*seqid
;
6055 struct nfs4_lock_state
*lsp
;
6056 struct rpc_task
*task
;
6057 struct nfs_seqid
*(*alloc_seqid
)(struct nfs_seqid_counter
*, gfp_t
);
6059 unsigned char fl_flags
= request
->fl_flags
;
6061 status
= nfs4_set_lock_state(state
, request
);
6062 /* Unlock _before_ we do the RPC call */
6063 request
->fl_flags
|= FL_EXISTS
;
6064 /* Exclude nfs_delegation_claim_locks() */
6065 mutex_lock(&sp
->so_delegreturn_mutex
);
6066 /* Exclude nfs4_reclaim_open_stateid() - note nesting! */
6067 down_read(&nfsi
->rwsem
);
6068 if (locks_lock_inode_wait(inode
, request
) == -ENOENT
) {
6069 up_read(&nfsi
->rwsem
);
6070 mutex_unlock(&sp
->so_delegreturn_mutex
);
6073 up_read(&nfsi
->rwsem
);
6074 mutex_unlock(&sp
->so_delegreturn_mutex
);
6077 /* Is this a delegated lock? */
6078 lsp
= request
->fl_u
.nfs4_fl
.owner
;
6079 if (test_bit(NFS_LOCK_INITIALIZED
, &lsp
->ls_flags
) == 0)
6081 alloc_seqid
= NFS_SERVER(inode
)->nfs_client
->cl_mvops
->alloc_seqid
;
6082 seqid
= alloc_seqid(&lsp
->ls_seqid
, GFP_KERNEL
);
6086 task
= nfs4_do_unlck(request
, nfs_file_open_context(request
->fl_file
), lsp
, seqid
);
6087 status
= PTR_ERR(task
);
6090 status
= nfs4_wait_for_completion_rpc_task(task
);
6093 request
->fl_flags
= fl_flags
;
6094 trace_nfs4_unlock(request
, state
, F_SETLK
, status
);
6098 struct nfs4_lockdata
{
6099 struct nfs_lock_args arg
;
6100 struct nfs_lock_res res
;
6101 struct nfs4_lock_state
*lsp
;
6102 struct nfs_open_context
*ctx
;
6103 struct file_lock fl
;
6104 unsigned long timestamp
;
6107 struct nfs_server
*server
;
6110 static struct nfs4_lockdata
*nfs4_alloc_lockdata(struct file_lock
*fl
,
6111 struct nfs_open_context
*ctx
, struct nfs4_lock_state
*lsp
,
6114 struct nfs4_lockdata
*p
;
6115 struct inode
*inode
= lsp
->ls_state
->inode
;
6116 struct nfs_server
*server
= NFS_SERVER(inode
);
6117 struct nfs_seqid
*(*alloc_seqid
)(struct nfs_seqid_counter
*, gfp_t
);
6119 p
= kzalloc(sizeof(*p
), gfp_mask
);
6123 p
->arg
.fh
= NFS_FH(inode
);
6125 p
->arg
.open_seqid
= nfs_alloc_seqid(&lsp
->ls_state
->owner
->so_seqid
, gfp_mask
);
6126 if (IS_ERR(p
->arg
.open_seqid
))
6128 alloc_seqid
= server
->nfs_client
->cl_mvops
->alloc_seqid
;
6129 p
->arg
.lock_seqid
= alloc_seqid(&lsp
->ls_seqid
, gfp_mask
);
6130 if (IS_ERR(p
->arg
.lock_seqid
))
6131 goto out_free_seqid
;
6132 p
->arg
.lock_owner
.clientid
= server
->nfs_client
->cl_clientid
;
6133 p
->arg
.lock_owner
.id
= lsp
->ls_seqid
.owner_id
;
6134 p
->arg
.lock_owner
.s_dev
= server
->s_dev
;
6135 p
->res
.lock_seqid
= p
->arg
.lock_seqid
;
6138 atomic_inc(&lsp
->ls_count
);
6139 p
->ctx
= get_nfs_open_context(ctx
);
6140 memcpy(&p
->fl
, fl
, sizeof(p
->fl
));
6143 nfs_free_seqid(p
->arg
.open_seqid
);
6149 static void nfs4_lock_prepare(struct rpc_task
*task
, void *calldata
)
6151 struct nfs4_lockdata
*data
= calldata
;
6152 struct nfs4_state
*state
= data
->lsp
->ls_state
;
6154 dprintk("%s: begin!\n", __func__
);
6155 if (nfs_wait_on_sequence(data
->arg
.lock_seqid
, task
) != 0)
6157 /* Do we need to do an open_to_lock_owner? */
6158 if (!test_bit(NFS_LOCK_INITIALIZED
, &data
->lsp
->ls_flags
)) {
6159 if (nfs_wait_on_sequence(data
->arg
.open_seqid
, task
) != 0) {
6160 goto out_release_lock_seqid
;
6162 nfs4_stateid_copy(&data
->arg
.open_stateid
,
6163 &state
->open_stateid
);
6164 data
->arg
.new_lock_owner
= 1;
6165 data
->res
.open_seqid
= data
->arg
.open_seqid
;
6167 data
->arg
.new_lock_owner
= 0;
6168 nfs4_stateid_copy(&data
->arg
.lock_stateid
,
6169 &data
->lsp
->ls_stateid
);
6171 if (!nfs4_valid_open_stateid(state
)) {
6172 data
->rpc_status
= -EBADF
;
6173 task
->tk_action
= NULL
;
6174 goto out_release_open_seqid
;
6176 data
->timestamp
= jiffies
;
6177 if (nfs4_setup_sequence(data
->server
,
6178 &data
->arg
.seq_args
,
6182 out_release_open_seqid
:
6183 nfs_release_seqid(data
->arg
.open_seqid
);
6184 out_release_lock_seqid
:
6185 nfs_release_seqid(data
->arg
.lock_seqid
);
6187 nfs4_sequence_done(task
, &data
->res
.seq_res
);
6188 dprintk("%s: done!, ret = %d\n", __func__
, data
->rpc_status
);
6191 static void nfs4_lock_done(struct rpc_task
*task
, void *calldata
)
6193 struct nfs4_lockdata
*data
= calldata
;
6194 struct nfs4_lock_state
*lsp
= data
->lsp
;
6196 dprintk("%s: begin!\n", __func__
);
6198 if (!nfs4_sequence_done(task
, &data
->res
.seq_res
))
6201 data
->rpc_status
= task
->tk_status
;
6202 switch (task
->tk_status
) {
6204 renew_lease(NFS_SERVER(d_inode(data
->ctx
->dentry
)),
6206 if (data
->arg
.new_lock
) {
6207 data
->fl
.fl_flags
&= ~(FL_SLEEP
| FL_ACCESS
);
6208 if (locks_lock_inode_wait(lsp
->ls_state
->inode
, &data
->fl
) < 0) {
6209 rpc_restart_call_prepare(task
);
6213 if (data
->arg
.new_lock_owner
!= 0) {
6214 nfs_confirm_seqid(&lsp
->ls_seqid
, 0);
6215 nfs4_stateid_copy(&lsp
->ls_stateid
, &data
->res
.stateid
);
6216 set_bit(NFS_LOCK_INITIALIZED
, &lsp
->ls_flags
);
6217 } else if (!nfs4_update_lock_stateid(lsp
, &data
->res
.stateid
))
6218 rpc_restart_call_prepare(task
);
6220 case -NFS4ERR_BAD_STATEID
:
6221 case -NFS4ERR_OLD_STATEID
:
6222 case -NFS4ERR_STALE_STATEID
:
6223 case -NFS4ERR_EXPIRED
:
6224 if (data
->arg
.new_lock_owner
!= 0) {
6225 if (!nfs4_stateid_match(&data
->arg
.open_stateid
,
6226 &lsp
->ls_state
->open_stateid
))
6227 rpc_restart_call_prepare(task
);
6228 } else if (!nfs4_stateid_match(&data
->arg
.lock_stateid
,
6230 rpc_restart_call_prepare(task
);
6232 dprintk("%s: done, ret = %d!\n", __func__
, data
->rpc_status
);
6235 static void nfs4_lock_release(void *calldata
)
6237 struct nfs4_lockdata
*data
= calldata
;
6239 dprintk("%s: begin!\n", __func__
);
6240 nfs_free_seqid(data
->arg
.open_seqid
);
6241 if (data
->cancelled
!= 0) {
6242 struct rpc_task
*task
;
6243 task
= nfs4_do_unlck(&data
->fl
, data
->ctx
, data
->lsp
,
6244 data
->arg
.lock_seqid
);
6246 rpc_put_task_async(task
);
6247 dprintk("%s: cancelling lock!\n", __func__
);
6249 nfs_free_seqid(data
->arg
.lock_seqid
);
6250 nfs4_put_lock_state(data
->lsp
);
6251 put_nfs_open_context(data
->ctx
);
6253 dprintk("%s: done!\n", __func__
);
6256 static const struct rpc_call_ops nfs4_lock_ops
= {
6257 .rpc_call_prepare
= nfs4_lock_prepare
,
6258 .rpc_call_done
= nfs4_lock_done
,
6259 .rpc_release
= nfs4_lock_release
,
6262 static void nfs4_handle_setlk_error(struct nfs_server
*server
, struct nfs4_lock_state
*lsp
, int new_lock_owner
, int error
)
6265 case -NFS4ERR_ADMIN_REVOKED
:
6266 case -NFS4ERR_EXPIRED
:
6267 case -NFS4ERR_BAD_STATEID
:
6268 lsp
->ls_seqid
.flags
&= ~NFS_SEQID_CONFIRMED
;
6269 if (new_lock_owner
!= 0 ||
6270 test_bit(NFS_LOCK_INITIALIZED
, &lsp
->ls_flags
) != 0)
6271 nfs4_schedule_stateid_recovery(server
, lsp
->ls_state
);
6273 case -NFS4ERR_STALE_STATEID
:
6274 lsp
->ls_seqid
.flags
&= ~NFS_SEQID_CONFIRMED
;
6275 nfs4_schedule_lease_recovery(server
->nfs_client
);
6279 static int _nfs4_do_setlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*fl
, int recovery_type
)
6281 struct nfs4_lockdata
*data
;
6282 struct rpc_task
*task
;
6283 struct rpc_message msg
= {
6284 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOCK
],
6285 .rpc_cred
= state
->owner
->so_cred
,
6287 struct rpc_task_setup task_setup_data
= {
6288 .rpc_client
= NFS_CLIENT(state
->inode
),
6289 .rpc_message
= &msg
,
6290 .callback_ops
= &nfs4_lock_ops
,
6291 .workqueue
= nfsiod_workqueue
,
6292 .flags
= RPC_TASK_ASYNC
,
6296 dprintk("%s: begin!\n", __func__
);
6297 data
= nfs4_alloc_lockdata(fl
, nfs_file_open_context(fl
->fl_file
),
6298 fl
->fl_u
.nfs4_fl
.owner
,
6299 recovery_type
== NFS_LOCK_NEW
? GFP_KERNEL
: GFP_NOFS
);
6303 data
->arg
.block
= 1;
6304 nfs4_init_sequence(&data
->arg
.seq_args
, &data
->res
.seq_res
, 1);
6305 msg
.rpc_argp
= &data
->arg
;
6306 msg
.rpc_resp
= &data
->res
;
6307 task_setup_data
.callback_data
= data
;
6308 if (recovery_type
> NFS_LOCK_NEW
) {
6309 if (recovery_type
== NFS_LOCK_RECLAIM
)
6310 data
->arg
.reclaim
= NFS_LOCK_RECLAIM
;
6311 nfs4_set_sequence_privileged(&data
->arg
.seq_args
);
6313 data
->arg
.new_lock
= 1;
6314 task
= rpc_run_task(&task_setup_data
);
6316 return PTR_ERR(task
);
6317 ret
= nfs4_wait_for_completion_rpc_task(task
);
6319 ret
= data
->rpc_status
;
6321 nfs4_handle_setlk_error(data
->server
, data
->lsp
,
6322 data
->arg
.new_lock_owner
, ret
);
6324 data
->cancelled
= 1;
6326 dprintk("%s: done, ret = %d!\n", __func__
, ret
);
6327 trace_nfs4_set_lock(fl
, state
, &data
->res
.stateid
, cmd
, ret
);
6331 static int nfs4_lock_reclaim(struct nfs4_state
*state
, struct file_lock
*request
)
6333 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
6334 struct nfs4_exception exception
= {
6335 .inode
= state
->inode
,
6340 /* Cache the lock if possible... */
6341 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) != 0)
6343 err
= _nfs4_do_setlk(state
, F_SETLK
, request
, NFS_LOCK_RECLAIM
);
6344 if (err
!= -NFS4ERR_DELAY
)
6346 nfs4_handle_exception(server
, err
, &exception
);
6347 } while (exception
.retry
);
6351 static int nfs4_lock_expired(struct nfs4_state
*state
, struct file_lock
*request
)
6353 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
6354 struct nfs4_exception exception
= {
6355 .inode
= state
->inode
,
6359 err
= nfs4_set_lock_state(state
, request
);
6362 if (!recover_lost_locks
) {
6363 set_bit(NFS_LOCK_LOST
, &request
->fl_u
.nfs4_fl
.owner
->ls_flags
);
6367 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) != 0)
6369 err
= _nfs4_do_setlk(state
, F_SETLK
, request
, NFS_LOCK_EXPIRED
);
6373 case -NFS4ERR_GRACE
:
6374 case -NFS4ERR_DELAY
:
6375 nfs4_handle_exception(server
, err
, &exception
);
6378 } while (exception
.retry
);
6383 #if defined(CONFIG_NFS_V4_1)
6384 static int nfs41_lock_expired(struct nfs4_state
*state
, struct file_lock
*request
)
6386 struct nfs4_lock_state
*lsp
;
6389 status
= nfs4_set_lock_state(state
, request
);
6392 lsp
= request
->fl_u
.nfs4_fl
.owner
;
6393 if (test_bit(NFS_LOCK_INITIALIZED
, &lsp
->ls_flags
) ||
6394 test_bit(NFS_LOCK_LOST
, &lsp
->ls_flags
))
6396 status
= nfs4_lock_expired(state
, request
);
6401 static int _nfs4_proc_setlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
6403 struct nfs_inode
*nfsi
= NFS_I(state
->inode
);
6404 struct nfs4_state_owner
*sp
= state
->owner
;
6405 unsigned char fl_flags
= request
->fl_flags
;
6408 request
->fl_flags
|= FL_ACCESS
;
6409 status
= locks_lock_inode_wait(state
->inode
, request
);
6412 mutex_lock(&sp
->so_delegreturn_mutex
);
6413 down_read(&nfsi
->rwsem
);
6414 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
)) {
6415 /* Yes: cache locks! */
6416 /* ...but avoid races with delegation recall... */
6417 request
->fl_flags
= fl_flags
& ~FL_SLEEP
;
6418 status
= locks_lock_inode_wait(state
->inode
, request
);
6419 up_read(&nfsi
->rwsem
);
6420 mutex_unlock(&sp
->so_delegreturn_mutex
);
6423 up_read(&nfsi
->rwsem
);
6424 mutex_unlock(&sp
->so_delegreturn_mutex
);
6425 status
= _nfs4_do_setlk(state
, cmd
, request
, NFS_LOCK_NEW
);
6427 request
->fl_flags
= fl_flags
;
6431 static int nfs4_proc_setlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
6433 struct nfs4_exception exception
= {
6435 .inode
= state
->inode
,
6440 err
= _nfs4_proc_setlk(state
, cmd
, request
);
6441 if (err
== -NFS4ERR_DENIED
)
6443 err
= nfs4_handle_exception(NFS_SERVER(state
->inode
),
6445 } while (exception
.retry
);
6449 #define NFS4_LOCK_MINTIMEOUT (1 * HZ)
6450 #define NFS4_LOCK_MAXTIMEOUT (30 * HZ)
6453 nfs4_retry_setlk_simple(struct nfs4_state
*state
, int cmd
,
6454 struct file_lock
*request
)
6456 int status
= -ERESTARTSYS
;
6457 unsigned long timeout
= NFS4_LOCK_MINTIMEOUT
;
6459 while(!signalled()) {
6460 status
= nfs4_proc_setlk(state
, cmd
, request
);
6461 if ((status
!= -EAGAIN
) || IS_SETLK(cmd
))
6463 freezable_schedule_timeout_interruptible(timeout
);
6465 timeout
= min_t(unsigned long, NFS4_LOCK_MAXTIMEOUT
, timeout
);
6466 status
= -ERESTARTSYS
;
6471 #ifdef CONFIG_NFS_V4_1
6472 struct nfs4_lock_waiter
{
6473 struct task_struct
*task
;
6474 struct inode
*inode
;
6475 struct nfs_lowner
*owner
;
6480 nfs4_wake_lock_waiter(wait_queue_t
*wait
, unsigned int mode
, int flags
, void *key
)
6483 struct cb_notify_lock_args
*cbnl
= key
;
6484 struct nfs4_lock_waiter
*waiter
= wait
->private;
6485 struct nfs_lowner
*lowner
= &cbnl
->cbnl_owner
,
6486 *wowner
= waiter
->owner
;
6488 /* Only wake if the callback was for the same owner */
6489 if (lowner
->clientid
!= wowner
->clientid
||
6490 lowner
->id
!= wowner
->id
||
6491 lowner
->s_dev
!= wowner
->s_dev
)
6494 /* Make sure it's for the right inode */
6495 if (nfs_compare_fh(NFS_FH(waiter
->inode
), &cbnl
->cbnl_fh
))
6498 waiter
->notified
= true;
6500 /* override "private" so we can use default_wake_function */
6501 wait
->private = waiter
->task
;
6502 ret
= autoremove_wake_function(wait
, mode
, flags
, key
);
6503 wait
->private = waiter
;
6508 nfs4_retry_setlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
6510 int status
= -ERESTARTSYS
;
6511 unsigned long flags
;
6512 struct nfs4_lock_state
*lsp
= request
->fl_u
.nfs4_fl
.owner
;
6513 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
6514 struct nfs_client
*clp
= server
->nfs_client
;
6515 wait_queue_head_t
*q
= &clp
->cl_lock_waitq
;
6516 struct nfs_lowner owner
= { .clientid
= clp
->cl_clientid
,
6517 .id
= lsp
->ls_seqid
.owner_id
,
6518 .s_dev
= server
->s_dev
};
6519 struct nfs4_lock_waiter waiter
= { .task
= current
,
6520 .inode
= state
->inode
,
6522 .notified
= false };
6525 /* Don't bother with waitqueue if we don't expect a callback */
6526 if (!test_bit(NFS_STATE_MAY_NOTIFY_LOCK
, &state
->flags
))
6527 return nfs4_retry_setlk_simple(state
, cmd
, request
);
6530 wait
.private = &waiter
;
6531 wait
.func
= nfs4_wake_lock_waiter
;
6532 add_wait_queue(q
, &wait
);
6534 while(!signalled()) {
6535 status
= nfs4_proc_setlk(state
, cmd
, request
);
6536 if ((status
!= -EAGAIN
) || IS_SETLK(cmd
))
6539 status
= -ERESTARTSYS
;
6540 spin_lock_irqsave(&q
->lock
, flags
);
6541 if (waiter
.notified
) {
6542 spin_unlock_irqrestore(&q
->lock
, flags
);
6545 set_current_state(TASK_INTERRUPTIBLE
);
6546 spin_unlock_irqrestore(&q
->lock
, flags
);
6548 freezable_schedule_timeout_interruptible(NFS4_LOCK_MAXTIMEOUT
);
6551 finish_wait(q
, &wait
);
6554 #else /* !CONFIG_NFS_V4_1 */
6556 nfs4_retry_setlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
6558 return nfs4_retry_setlk_simple(state
, cmd
, request
);
6563 nfs4_proc_lock(struct file
*filp
, int cmd
, struct file_lock
*request
)
6565 struct nfs_open_context
*ctx
;
6566 struct nfs4_state
*state
;
6569 /* verify open state */
6570 ctx
= nfs_file_open_context(filp
);
6573 if (request
->fl_start
< 0 || request
->fl_end
< 0)
6576 if (IS_GETLK(cmd
)) {
6578 return nfs4_proc_getlk(state
, F_GETLK
, request
);
6582 if (!(IS_SETLK(cmd
) || IS_SETLKW(cmd
)))
6585 if (request
->fl_type
== F_UNLCK
) {
6587 return nfs4_proc_unlck(state
, cmd
, request
);
6594 if ((request
->fl_flags
& FL_POSIX
) &&
6595 !test_bit(NFS_STATE_POSIX_LOCKS
, &state
->flags
))
6599 * Don't rely on the VFS having checked the file open mode,
6600 * since it won't do this for flock() locks.
6602 switch (request
->fl_type
) {
6604 if (!(filp
->f_mode
& FMODE_READ
))
6608 if (!(filp
->f_mode
& FMODE_WRITE
))
6612 status
= nfs4_set_lock_state(state
, request
);
6616 return nfs4_retry_setlk(state
, cmd
, request
);
6619 int nfs4_lock_delegation_recall(struct file_lock
*fl
, struct nfs4_state
*state
, const nfs4_stateid
*stateid
)
6621 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
6624 err
= nfs4_set_lock_state(state
, fl
);
6627 err
= _nfs4_do_setlk(state
, F_SETLK
, fl
, NFS_LOCK_NEW
);
6628 return nfs4_handle_delegation_recall_error(server
, state
, stateid
, err
);
6631 struct nfs_release_lockowner_data
{
6632 struct nfs4_lock_state
*lsp
;
6633 struct nfs_server
*server
;
6634 struct nfs_release_lockowner_args args
;
6635 struct nfs_release_lockowner_res res
;
6636 unsigned long timestamp
;
6639 static void nfs4_release_lockowner_prepare(struct rpc_task
*task
, void *calldata
)
6641 struct nfs_release_lockowner_data
*data
= calldata
;
6642 struct nfs_server
*server
= data
->server
;
6643 nfs40_setup_sequence(server
->nfs_client
->cl_slot_tbl
,
6644 &data
->args
.seq_args
, &data
->res
.seq_res
, task
);
6645 data
->args
.lock_owner
.clientid
= server
->nfs_client
->cl_clientid
;
6646 data
->timestamp
= jiffies
;
6649 static void nfs4_release_lockowner_done(struct rpc_task
*task
, void *calldata
)
6651 struct nfs_release_lockowner_data
*data
= calldata
;
6652 struct nfs_server
*server
= data
->server
;
6654 nfs40_sequence_done(task
, &data
->res
.seq_res
);
6656 switch (task
->tk_status
) {
6658 renew_lease(server
, data
->timestamp
);
6660 case -NFS4ERR_STALE_CLIENTID
:
6661 case -NFS4ERR_EXPIRED
:
6662 nfs4_schedule_lease_recovery(server
->nfs_client
);
6664 case -NFS4ERR_LEASE_MOVED
:
6665 case -NFS4ERR_DELAY
:
6666 if (nfs4_async_handle_error(task
, server
,
6667 NULL
, NULL
) == -EAGAIN
)
6668 rpc_restart_call_prepare(task
);
6672 static void nfs4_release_lockowner_release(void *calldata
)
6674 struct nfs_release_lockowner_data
*data
= calldata
;
6675 nfs4_free_lock_state(data
->server
, data
->lsp
);
6679 static const struct rpc_call_ops nfs4_release_lockowner_ops
= {
6680 .rpc_call_prepare
= nfs4_release_lockowner_prepare
,
6681 .rpc_call_done
= nfs4_release_lockowner_done
,
6682 .rpc_release
= nfs4_release_lockowner_release
,
6686 nfs4_release_lockowner(struct nfs_server
*server
, struct nfs4_lock_state
*lsp
)
6688 struct nfs_release_lockowner_data
*data
;
6689 struct rpc_message msg
= {
6690 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RELEASE_LOCKOWNER
],
6693 if (server
->nfs_client
->cl_mvops
->minor_version
!= 0)
6696 data
= kmalloc(sizeof(*data
), GFP_NOFS
);
6700 data
->server
= server
;
6701 data
->args
.lock_owner
.clientid
= server
->nfs_client
->cl_clientid
;
6702 data
->args
.lock_owner
.id
= lsp
->ls_seqid
.owner_id
;
6703 data
->args
.lock_owner
.s_dev
= server
->s_dev
;
6705 msg
.rpc_argp
= &data
->args
;
6706 msg
.rpc_resp
= &data
->res
;
6707 nfs4_init_sequence(&data
->args
.seq_args
, &data
->res
.seq_res
, 0);
6708 rpc_call_async(server
->client
, &msg
, 0, &nfs4_release_lockowner_ops
, data
);
6711 #define XATTR_NAME_NFSV4_ACL "system.nfs4_acl"
6713 static int nfs4_xattr_set_nfs4_acl(const struct xattr_handler
*handler
,
6714 struct dentry
*unused
, struct inode
*inode
,
6715 const char *key
, const void *buf
,
6716 size_t buflen
, int flags
)
6718 return nfs4_proc_set_acl(inode
, buf
, buflen
);
6721 static int nfs4_xattr_get_nfs4_acl(const struct xattr_handler
*handler
,
6722 struct dentry
*unused
, struct inode
*inode
,
6723 const char *key
, void *buf
, size_t buflen
)
6725 return nfs4_proc_get_acl(inode
, buf
, buflen
);
6728 static bool nfs4_xattr_list_nfs4_acl(struct dentry
*dentry
)
6730 return nfs4_server_supports_acls(NFS_SERVER(d_inode(dentry
)));
6733 #ifdef CONFIG_NFS_V4_SECURITY_LABEL
6735 static int nfs4_xattr_set_nfs4_label(const struct xattr_handler
*handler
,
6736 struct dentry
*unused
, struct inode
*inode
,
6737 const char *key
, const void *buf
,
6738 size_t buflen
, int flags
)
6740 if (security_ismaclabel(key
))
6741 return nfs4_set_security_label(inode
, buf
, buflen
);
6746 static int nfs4_xattr_get_nfs4_label(const struct xattr_handler
*handler
,
6747 struct dentry
*unused
, struct inode
*inode
,
6748 const char *key
, void *buf
, size_t buflen
)
6750 if (security_ismaclabel(key
))
6751 return nfs4_get_security_label(inode
, buf
, buflen
);
6756 nfs4_listxattr_nfs4_label(struct inode
*inode
, char *list
, size_t list_len
)
6760 if (nfs_server_capable(inode
, NFS_CAP_SECURITY_LABEL
)) {
6761 len
= security_inode_listsecurity(inode
, list
, list_len
);
6762 if (list_len
&& len
> list_len
)
6768 static const struct xattr_handler nfs4_xattr_nfs4_label_handler
= {
6769 .prefix
= XATTR_SECURITY_PREFIX
,
6770 .get
= nfs4_xattr_get_nfs4_label
,
6771 .set
= nfs4_xattr_set_nfs4_label
,
6777 nfs4_listxattr_nfs4_label(struct inode
*inode
, char *list
, size_t list_len
)
6785 * nfs_fhget will use either the mounted_on_fileid or the fileid
6787 static void nfs_fixup_referral_attributes(struct nfs_fattr
*fattr
)
6789 if (!(((fattr
->valid
& NFS_ATTR_FATTR_MOUNTED_ON_FILEID
) ||
6790 (fattr
->valid
& NFS_ATTR_FATTR_FILEID
)) &&
6791 (fattr
->valid
& NFS_ATTR_FATTR_FSID
) &&
6792 (fattr
->valid
& NFS_ATTR_FATTR_V4_LOCATIONS
)))
6795 fattr
->valid
|= NFS_ATTR_FATTR_TYPE
| NFS_ATTR_FATTR_MODE
|
6796 NFS_ATTR_FATTR_NLINK
| NFS_ATTR_FATTR_V4_REFERRAL
;
6797 fattr
->mode
= S_IFDIR
| S_IRUGO
| S_IXUGO
;
6801 static int _nfs4_proc_fs_locations(struct rpc_clnt
*client
, struct inode
*dir
,
6802 const struct qstr
*name
,
6803 struct nfs4_fs_locations
*fs_locations
,
6806 struct nfs_server
*server
= NFS_SERVER(dir
);
6808 [0] = FATTR4_WORD0_FSID
| FATTR4_WORD0_FS_LOCATIONS
,
6810 struct nfs4_fs_locations_arg args
= {
6811 .dir_fh
= NFS_FH(dir
),
6816 struct nfs4_fs_locations_res res
= {
6817 .fs_locations
= fs_locations
,
6819 struct rpc_message msg
= {
6820 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_FS_LOCATIONS
],
6826 dprintk("%s: start\n", __func__
);
6828 /* Ask for the fileid of the absent filesystem if mounted_on_fileid
6829 * is not supported */
6830 if (NFS_SERVER(dir
)->attr_bitmask
[1] & FATTR4_WORD1_MOUNTED_ON_FILEID
)
6831 bitmask
[1] |= FATTR4_WORD1_MOUNTED_ON_FILEID
;
6833 bitmask
[0] |= FATTR4_WORD0_FILEID
;
6835 nfs_fattr_init(&fs_locations
->fattr
);
6836 fs_locations
->server
= server
;
6837 fs_locations
->nlocations
= 0;
6838 status
= nfs4_call_sync(client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
6839 dprintk("%s: returned status = %d\n", __func__
, status
);
6843 int nfs4_proc_fs_locations(struct rpc_clnt
*client
, struct inode
*dir
,
6844 const struct qstr
*name
,
6845 struct nfs4_fs_locations
*fs_locations
,
6848 struct nfs4_exception exception
= { };
6851 err
= _nfs4_proc_fs_locations(client
, dir
, name
,
6852 fs_locations
, page
);
6853 trace_nfs4_get_fs_locations(dir
, name
, err
);
6854 err
= nfs4_handle_exception(NFS_SERVER(dir
), err
,
6856 } while (exception
.retry
);
6861 * This operation also signals the server that this client is
6862 * performing migration recovery. The server can stop returning
6863 * NFS4ERR_LEASE_MOVED to this client. A RENEW operation is
6864 * appended to this compound to identify the client ID which is
6865 * performing recovery.
6867 static int _nfs40_proc_get_locations(struct inode
*inode
,
6868 struct nfs4_fs_locations
*locations
,
6869 struct page
*page
, struct rpc_cred
*cred
)
6871 struct nfs_server
*server
= NFS_SERVER(inode
);
6872 struct rpc_clnt
*clnt
= server
->client
;
6874 [0] = FATTR4_WORD0_FSID
| FATTR4_WORD0_FS_LOCATIONS
,
6876 struct nfs4_fs_locations_arg args
= {
6877 .clientid
= server
->nfs_client
->cl_clientid
,
6878 .fh
= NFS_FH(inode
),
6881 .migration
= 1, /* skip LOOKUP */
6882 .renew
= 1, /* append RENEW */
6884 struct nfs4_fs_locations_res res
= {
6885 .fs_locations
= locations
,
6889 struct rpc_message msg
= {
6890 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_FS_LOCATIONS
],
6895 unsigned long now
= jiffies
;
6898 nfs_fattr_init(&locations
->fattr
);
6899 locations
->server
= server
;
6900 locations
->nlocations
= 0;
6902 nfs4_init_sequence(&args
.seq_args
, &res
.seq_res
, 0);
6903 nfs4_set_sequence_privileged(&args
.seq_args
);
6904 status
= nfs4_call_sync_sequence(clnt
, server
, &msg
,
6905 &args
.seq_args
, &res
.seq_res
);
6909 renew_lease(server
, now
);
6913 #ifdef CONFIG_NFS_V4_1
6916 * This operation also signals the server that this client is
6917 * performing migration recovery. The server can stop asserting
6918 * SEQ4_STATUS_LEASE_MOVED for this client. The client ID
6919 * performing this operation is identified in the SEQUENCE
6920 * operation in this compound.
6922 * When the client supports GETATTR(fs_locations_info), it can
6923 * be plumbed in here.
6925 static int _nfs41_proc_get_locations(struct inode
*inode
,
6926 struct nfs4_fs_locations
*locations
,
6927 struct page
*page
, struct rpc_cred
*cred
)
6929 struct nfs_server
*server
= NFS_SERVER(inode
);
6930 struct rpc_clnt
*clnt
= server
->client
;
6932 [0] = FATTR4_WORD0_FSID
| FATTR4_WORD0_FS_LOCATIONS
,
6934 struct nfs4_fs_locations_arg args
= {
6935 .fh
= NFS_FH(inode
),
6938 .migration
= 1, /* skip LOOKUP */
6940 struct nfs4_fs_locations_res res
= {
6941 .fs_locations
= locations
,
6944 struct rpc_message msg
= {
6945 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_FS_LOCATIONS
],
6952 nfs_fattr_init(&locations
->fattr
);
6953 locations
->server
= server
;
6954 locations
->nlocations
= 0;
6956 nfs4_init_sequence(&args
.seq_args
, &res
.seq_res
, 0);
6957 nfs4_set_sequence_privileged(&args
.seq_args
);
6958 status
= nfs4_call_sync_sequence(clnt
, server
, &msg
,
6959 &args
.seq_args
, &res
.seq_res
);
6960 if (status
== NFS4_OK
&&
6961 res
.seq_res
.sr_status_flags
& SEQ4_STATUS_LEASE_MOVED
)
6962 status
= -NFS4ERR_LEASE_MOVED
;
6966 #endif /* CONFIG_NFS_V4_1 */
6969 * nfs4_proc_get_locations - discover locations for a migrated FSID
6970 * @inode: inode on FSID that is migrating
6971 * @locations: result of query
6973 * @cred: credential to use for this operation
6975 * Returns NFS4_OK on success, a negative NFS4ERR status code if the
6976 * operation failed, or a negative errno if a local error occurred.
6978 * On success, "locations" is filled in, but if the server has
6979 * no locations information, NFS_ATTR_FATTR_V4_LOCATIONS is not
6982 * -NFS4ERR_LEASE_MOVED is returned if the server still has leases
6983 * from this client that require migration recovery.
6985 int nfs4_proc_get_locations(struct inode
*inode
,
6986 struct nfs4_fs_locations
*locations
,
6987 struct page
*page
, struct rpc_cred
*cred
)
6989 struct nfs_server
*server
= NFS_SERVER(inode
);
6990 struct nfs_client
*clp
= server
->nfs_client
;
6991 const struct nfs4_mig_recovery_ops
*ops
=
6992 clp
->cl_mvops
->mig_recovery_ops
;
6993 struct nfs4_exception exception
= { };
6996 dprintk("%s: FSID %llx:%llx on \"%s\"\n", __func__
,
6997 (unsigned long long)server
->fsid
.major
,
6998 (unsigned long long)server
->fsid
.minor
,
7000 nfs_display_fhandle(NFS_FH(inode
), __func__
);
7003 status
= ops
->get_locations(inode
, locations
, page
, cred
);
7004 if (status
!= -NFS4ERR_DELAY
)
7006 nfs4_handle_exception(server
, status
, &exception
);
7007 } while (exception
.retry
);
7012 * This operation also signals the server that this client is
7013 * performing "lease moved" recovery. The server can stop
7014 * returning NFS4ERR_LEASE_MOVED to this client. A RENEW operation
7015 * is appended to this compound to identify the client ID which is
7016 * performing recovery.
7018 static int _nfs40_proc_fsid_present(struct inode
*inode
, struct rpc_cred
*cred
)
7020 struct nfs_server
*server
= NFS_SERVER(inode
);
7021 struct nfs_client
*clp
= NFS_SERVER(inode
)->nfs_client
;
7022 struct rpc_clnt
*clnt
= server
->client
;
7023 struct nfs4_fsid_present_arg args
= {
7024 .fh
= NFS_FH(inode
),
7025 .clientid
= clp
->cl_clientid
,
7026 .renew
= 1, /* append RENEW */
7028 struct nfs4_fsid_present_res res
= {
7031 struct rpc_message msg
= {
7032 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_FSID_PRESENT
],
7037 unsigned long now
= jiffies
;
7040 res
.fh
= nfs_alloc_fhandle();
7044 nfs4_init_sequence(&args
.seq_args
, &res
.seq_res
, 0);
7045 nfs4_set_sequence_privileged(&args
.seq_args
);
7046 status
= nfs4_call_sync_sequence(clnt
, server
, &msg
,
7047 &args
.seq_args
, &res
.seq_res
);
7048 nfs_free_fhandle(res
.fh
);
7052 do_renew_lease(clp
, now
);
7056 #ifdef CONFIG_NFS_V4_1
7059 * This operation also signals the server that this client is
7060 * performing "lease moved" recovery. The server can stop asserting
7061 * SEQ4_STATUS_LEASE_MOVED for this client. The client ID performing
7062 * this operation is identified in the SEQUENCE operation in this
7065 static int _nfs41_proc_fsid_present(struct inode
*inode
, struct rpc_cred
*cred
)
7067 struct nfs_server
*server
= NFS_SERVER(inode
);
7068 struct rpc_clnt
*clnt
= server
->client
;
7069 struct nfs4_fsid_present_arg args
= {
7070 .fh
= NFS_FH(inode
),
7072 struct nfs4_fsid_present_res res
= {
7074 struct rpc_message msg
= {
7075 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_FSID_PRESENT
],
7082 res
.fh
= nfs_alloc_fhandle();
7086 nfs4_init_sequence(&args
.seq_args
, &res
.seq_res
, 0);
7087 nfs4_set_sequence_privileged(&args
.seq_args
);
7088 status
= nfs4_call_sync_sequence(clnt
, server
, &msg
,
7089 &args
.seq_args
, &res
.seq_res
);
7090 nfs_free_fhandle(res
.fh
);
7091 if (status
== NFS4_OK
&&
7092 res
.seq_res
.sr_status_flags
& SEQ4_STATUS_LEASE_MOVED
)
7093 status
= -NFS4ERR_LEASE_MOVED
;
7097 #endif /* CONFIG_NFS_V4_1 */
7100 * nfs4_proc_fsid_present - Is this FSID present or absent on server?
7101 * @inode: inode on FSID to check
7102 * @cred: credential to use for this operation
7104 * Server indicates whether the FSID is present, moved, or not
7105 * recognized. This operation is necessary to clear a LEASE_MOVED
7106 * condition for this client ID.
7108 * Returns NFS4_OK if the FSID is present on this server,
7109 * -NFS4ERR_MOVED if the FSID is no longer present, a negative
7110 * NFS4ERR code if some error occurred on the server, or a
7111 * negative errno if a local failure occurred.
7113 int nfs4_proc_fsid_present(struct inode
*inode
, struct rpc_cred
*cred
)
7115 struct nfs_server
*server
= NFS_SERVER(inode
);
7116 struct nfs_client
*clp
= server
->nfs_client
;
7117 const struct nfs4_mig_recovery_ops
*ops
=
7118 clp
->cl_mvops
->mig_recovery_ops
;
7119 struct nfs4_exception exception
= { };
7122 dprintk("%s: FSID %llx:%llx on \"%s\"\n", __func__
,
7123 (unsigned long long)server
->fsid
.major
,
7124 (unsigned long long)server
->fsid
.minor
,
7126 nfs_display_fhandle(NFS_FH(inode
), __func__
);
7129 status
= ops
->fsid_present(inode
, cred
);
7130 if (status
!= -NFS4ERR_DELAY
)
7132 nfs4_handle_exception(server
, status
, &exception
);
7133 } while (exception
.retry
);
7138 * If 'use_integrity' is true and the state managment nfs_client
7139 * cl_rpcclient is using krb5i/p, use the integrity protected cl_rpcclient
7140 * and the machine credential as per RFC3530bis and RFC5661 Security
7141 * Considerations sections. Otherwise, just use the user cred with the
7142 * filesystem's rpc_client.
7144 static int _nfs4_proc_secinfo(struct inode
*dir
, const struct qstr
*name
, struct nfs4_secinfo_flavors
*flavors
, bool use_integrity
)
7147 struct nfs4_secinfo_arg args
= {
7148 .dir_fh
= NFS_FH(dir
),
7151 struct nfs4_secinfo_res res
= {
7154 struct rpc_message msg
= {
7155 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SECINFO
],
7159 struct rpc_clnt
*clnt
= NFS_SERVER(dir
)->client
;
7160 struct rpc_cred
*cred
= NULL
;
7162 if (use_integrity
) {
7163 clnt
= NFS_SERVER(dir
)->nfs_client
->cl_rpcclient
;
7164 cred
= nfs4_get_clid_cred(NFS_SERVER(dir
)->nfs_client
);
7165 msg
.rpc_cred
= cred
;
7168 dprintk("NFS call secinfo %s\n", name
->name
);
7170 nfs4_state_protect(NFS_SERVER(dir
)->nfs_client
,
7171 NFS_SP4_MACH_CRED_SECINFO
, &clnt
, &msg
);
7173 status
= nfs4_call_sync(clnt
, NFS_SERVER(dir
), &msg
, &args
.seq_args
,
7175 dprintk("NFS reply secinfo: %d\n", status
);
7183 int nfs4_proc_secinfo(struct inode
*dir
, const struct qstr
*name
,
7184 struct nfs4_secinfo_flavors
*flavors
)
7186 struct nfs4_exception exception
= { };
7189 err
= -NFS4ERR_WRONGSEC
;
7191 /* try to use integrity protection with machine cred */
7192 if (_nfs4_is_integrity_protected(NFS_SERVER(dir
)->nfs_client
))
7193 err
= _nfs4_proc_secinfo(dir
, name
, flavors
, true);
7196 * if unable to use integrity protection, or SECINFO with
7197 * integrity protection returns NFS4ERR_WRONGSEC (which is
7198 * disallowed by spec, but exists in deployed servers) use
7199 * the current filesystem's rpc_client and the user cred.
7201 if (err
== -NFS4ERR_WRONGSEC
)
7202 err
= _nfs4_proc_secinfo(dir
, name
, flavors
, false);
7204 trace_nfs4_secinfo(dir
, name
, err
);
7205 err
= nfs4_handle_exception(NFS_SERVER(dir
), err
,
7207 } while (exception
.retry
);
7211 #ifdef CONFIG_NFS_V4_1
7213 * Check the exchange flags returned by the server for invalid flags, having
7214 * both PNFS and NON_PNFS flags set, and not having one of NON_PNFS, PNFS, or
7217 static int nfs4_check_cl_exchange_flags(u32 flags
)
7219 if (flags
& ~EXCHGID4_FLAG_MASK_R
)
7221 if ((flags
& EXCHGID4_FLAG_USE_PNFS_MDS
) &&
7222 (flags
& EXCHGID4_FLAG_USE_NON_PNFS
))
7224 if (!(flags
& (EXCHGID4_FLAG_MASK_PNFS
)))
7228 return -NFS4ERR_INVAL
;
7232 nfs41_same_server_scope(struct nfs41_server_scope
*a
,
7233 struct nfs41_server_scope
*b
)
7235 if (a
->server_scope_sz
== b
->server_scope_sz
&&
7236 memcmp(a
->server_scope
, b
->server_scope
, a
->server_scope_sz
) == 0)
7243 nfs4_bind_one_conn_to_session_done(struct rpc_task
*task
, void *calldata
)
7247 static const struct rpc_call_ops nfs4_bind_one_conn_to_session_ops
= {
7248 .rpc_call_done
= &nfs4_bind_one_conn_to_session_done
,
7252 * nfs4_proc_bind_one_conn_to_session()
7254 * The 4.1 client currently uses the same TCP connection for the
7255 * fore and backchannel.
7258 int nfs4_proc_bind_one_conn_to_session(struct rpc_clnt
*clnt
,
7259 struct rpc_xprt
*xprt
,
7260 struct nfs_client
*clp
,
7261 struct rpc_cred
*cred
)
7264 struct nfs41_bind_conn_to_session_args args
= {
7266 .dir
= NFS4_CDFC4_FORE_OR_BOTH
,
7268 struct nfs41_bind_conn_to_session_res res
;
7269 struct rpc_message msg
= {
7271 &nfs4_procedures
[NFSPROC4_CLNT_BIND_CONN_TO_SESSION
],
7276 struct rpc_task_setup task_setup_data
= {
7279 .callback_ops
= &nfs4_bind_one_conn_to_session_ops
,
7280 .rpc_message
= &msg
,
7281 .flags
= RPC_TASK_TIMEOUT
,
7283 struct rpc_task
*task
;
7285 dprintk("--> %s\n", __func__
);
7287 nfs4_copy_sessionid(&args
.sessionid
, &clp
->cl_session
->sess_id
);
7288 if (!(clp
->cl_session
->flags
& SESSION4_BACK_CHAN
))
7289 args
.dir
= NFS4_CDFC4_FORE
;
7291 /* Do not set the backchannel flag unless this is clnt->cl_xprt */
7292 if (xprt
!= rcu_access_pointer(clnt
->cl_xprt
))
7293 args
.dir
= NFS4_CDFC4_FORE
;
7295 task
= rpc_run_task(&task_setup_data
);
7296 if (!IS_ERR(task
)) {
7297 status
= task
->tk_status
;
7300 status
= PTR_ERR(task
);
7301 trace_nfs4_bind_conn_to_session(clp
, status
);
7303 if (memcmp(res
.sessionid
.data
,
7304 clp
->cl_session
->sess_id
.data
, NFS4_MAX_SESSIONID_LEN
)) {
7305 dprintk("NFS: %s: Session ID mismatch\n", __func__
);
7309 if ((res
.dir
& args
.dir
) != res
.dir
|| res
.dir
== 0) {
7310 dprintk("NFS: %s: Unexpected direction from server\n",
7315 if (res
.use_conn_in_rdma_mode
!= args
.use_conn_in_rdma_mode
) {
7316 dprintk("NFS: %s: Server returned RDMA mode = true\n",
7323 dprintk("<-- %s status= %d\n", __func__
, status
);
7327 struct rpc_bind_conn_calldata
{
7328 struct nfs_client
*clp
;
7329 struct rpc_cred
*cred
;
7333 nfs4_proc_bind_conn_to_session_callback(struct rpc_clnt
*clnt
,
7334 struct rpc_xprt
*xprt
,
7337 struct rpc_bind_conn_calldata
*p
= calldata
;
7339 return nfs4_proc_bind_one_conn_to_session(clnt
, xprt
, p
->clp
, p
->cred
);
7342 int nfs4_proc_bind_conn_to_session(struct nfs_client
*clp
, struct rpc_cred
*cred
)
7344 struct rpc_bind_conn_calldata data
= {
7348 return rpc_clnt_iterate_for_each_xprt(clp
->cl_rpcclient
,
7349 nfs4_proc_bind_conn_to_session_callback
, &data
);
7353 * Minimum set of SP4_MACH_CRED operations from RFC 5661 in the enforce map
7354 * and operations we'd like to see to enable certain features in the allow map
7356 static const struct nfs41_state_protection nfs4_sp4_mach_cred_request
= {
7357 .how
= SP4_MACH_CRED
,
7358 .enforce
.u
.words
= {
7359 [1] = 1 << (OP_BIND_CONN_TO_SESSION
- 32) |
7360 1 << (OP_EXCHANGE_ID
- 32) |
7361 1 << (OP_CREATE_SESSION
- 32) |
7362 1 << (OP_DESTROY_SESSION
- 32) |
7363 1 << (OP_DESTROY_CLIENTID
- 32)
7366 [0] = 1 << (OP_CLOSE
) |
7367 1 << (OP_OPEN_DOWNGRADE
) |
7369 1 << (OP_DELEGRETURN
) |
7371 [1] = 1 << (OP_SECINFO
- 32) |
7372 1 << (OP_SECINFO_NO_NAME
- 32) |
7373 1 << (OP_LAYOUTRETURN
- 32) |
7374 1 << (OP_TEST_STATEID
- 32) |
7375 1 << (OP_FREE_STATEID
- 32) |
7376 1 << (OP_WRITE
- 32)
7381 * Select the state protection mode for client `clp' given the server results
7382 * from exchange_id in `sp'.
7384 * Returns 0 on success, negative errno otherwise.
7386 static int nfs4_sp4_select_mode(struct nfs_client
*clp
,
7387 struct nfs41_state_protection
*sp
)
7389 static const u32 supported_enforce
[NFS4_OP_MAP_NUM_WORDS
] = {
7390 [1] = 1 << (OP_BIND_CONN_TO_SESSION
- 32) |
7391 1 << (OP_EXCHANGE_ID
- 32) |
7392 1 << (OP_CREATE_SESSION
- 32) |
7393 1 << (OP_DESTROY_SESSION
- 32) |
7394 1 << (OP_DESTROY_CLIENTID
- 32)
7398 if (sp
->how
== SP4_MACH_CRED
) {
7399 /* Print state protect result */
7400 dfprintk(MOUNT
, "Server SP4_MACH_CRED support:\n");
7401 for (i
= 0; i
<= LAST_NFS4_OP
; i
++) {
7402 if (test_bit(i
, sp
->enforce
.u
.longs
))
7403 dfprintk(MOUNT
, " enforce op %d\n", i
);
7404 if (test_bit(i
, sp
->allow
.u
.longs
))
7405 dfprintk(MOUNT
, " allow op %d\n", i
);
7408 /* make sure nothing is on enforce list that isn't supported */
7409 for (i
= 0; i
< NFS4_OP_MAP_NUM_WORDS
; i
++) {
7410 if (sp
->enforce
.u
.words
[i
] & ~supported_enforce
[i
]) {
7411 dfprintk(MOUNT
, "sp4_mach_cred: disabled\n");
7417 * Minimal mode - state operations are allowed to use machine
7418 * credential. Note this already happens by default, so the
7419 * client doesn't have to do anything more than the negotiation.
7421 * NOTE: we don't care if EXCHANGE_ID is in the list -
7422 * we're already using the machine cred for exchange_id
7423 * and will never use a different cred.
7425 if (test_bit(OP_BIND_CONN_TO_SESSION
, sp
->enforce
.u
.longs
) &&
7426 test_bit(OP_CREATE_SESSION
, sp
->enforce
.u
.longs
) &&
7427 test_bit(OP_DESTROY_SESSION
, sp
->enforce
.u
.longs
) &&
7428 test_bit(OP_DESTROY_CLIENTID
, sp
->enforce
.u
.longs
)) {
7429 dfprintk(MOUNT
, "sp4_mach_cred:\n");
7430 dfprintk(MOUNT
, " minimal mode enabled\n");
7431 set_bit(NFS_SP4_MACH_CRED_MINIMAL
, &clp
->cl_sp4_flags
);
7433 dfprintk(MOUNT
, "sp4_mach_cred: disabled\n");
7437 if (test_bit(OP_CLOSE
, sp
->allow
.u
.longs
) &&
7438 test_bit(OP_OPEN_DOWNGRADE
, sp
->allow
.u
.longs
) &&
7439 test_bit(OP_DELEGRETURN
, sp
->allow
.u
.longs
) &&
7440 test_bit(OP_LOCKU
, sp
->allow
.u
.longs
)) {
7441 dfprintk(MOUNT
, " cleanup mode enabled\n");
7442 set_bit(NFS_SP4_MACH_CRED_CLEANUP
, &clp
->cl_sp4_flags
);
7445 if (test_bit(OP_LAYOUTRETURN
, sp
->allow
.u
.longs
)) {
7446 dfprintk(MOUNT
, " pnfs cleanup mode enabled\n");
7447 set_bit(NFS_SP4_MACH_CRED_PNFS_CLEANUP
,
7448 &clp
->cl_sp4_flags
);
7451 if (test_bit(OP_SECINFO
, sp
->allow
.u
.longs
) &&
7452 test_bit(OP_SECINFO_NO_NAME
, sp
->allow
.u
.longs
)) {
7453 dfprintk(MOUNT
, " secinfo mode enabled\n");
7454 set_bit(NFS_SP4_MACH_CRED_SECINFO
, &clp
->cl_sp4_flags
);
7457 if (test_bit(OP_TEST_STATEID
, sp
->allow
.u
.longs
) &&
7458 test_bit(OP_FREE_STATEID
, sp
->allow
.u
.longs
)) {
7459 dfprintk(MOUNT
, " stateid mode enabled\n");
7460 set_bit(NFS_SP4_MACH_CRED_STATEID
, &clp
->cl_sp4_flags
);
7463 if (test_bit(OP_WRITE
, sp
->allow
.u
.longs
)) {
7464 dfprintk(MOUNT
, " write mode enabled\n");
7465 set_bit(NFS_SP4_MACH_CRED_WRITE
, &clp
->cl_sp4_flags
);
7468 if (test_bit(OP_COMMIT
, sp
->allow
.u
.longs
)) {
7469 dfprintk(MOUNT
, " commit mode enabled\n");
7470 set_bit(NFS_SP4_MACH_CRED_COMMIT
, &clp
->cl_sp4_flags
);
7477 struct nfs41_exchange_id_data
{
7478 struct nfs41_exchange_id_res res
;
7479 struct nfs41_exchange_id_args args
;
7480 struct rpc_xprt
*xprt
;
7484 static void nfs4_exchange_id_done(struct rpc_task
*task
, void *data
)
7486 struct nfs41_exchange_id_data
*cdata
=
7487 (struct nfs41_exchange_id_data
*)data
;
7488 struct nfs_client
*clp
= cdata
->args
.client
;
7489 int status
= task
->tk_status
;
7491 trace_nfs4_exchange_id(clp
, status
);
7494 status
= nfs4_check_cl_exchange_flags(cdata
->res
.flags
);
7496 if (cdata
->xprt
&& status
== 0) {
7497 status
= nfs4_detect_session_trunking(clp
, &cdata
->res
,
7503 status
= nfs4_sp4_select_mode(clp
, &cdata
->res
.state_protect
);
7506 clp
->cl_clientid
= cdata
->res
.clientid
;
7507 clp
->cl_exchange_flags
= cdata
->res
.flags
;
7508 /* Client ID is not confirmed */
7509 if (!(cdata
->res
.flags
& EXCHGID4_FLAG_CONFIRMED_R
)) {
7510 clear_bit(NFS4_SESSION_ESTABLISHED
,
7511 &clp
->cl_session
->session_state
);
7512 clp
->cl_seqid
= cdata
->res
.seqid
;
7515 kfree(clp
->cl_serverowner
);
7516 clp
->cl_serverowner
= cdata
->res
.server_owner
;
7517 cdata
->res
.server_owner
= NULL
;
7519 /* use the most recent implementation id */
7520 kfree(clp
->cl_implid
);
7521 clp
->cl_implid
= cdata
->res
.impl_id
;
7522 cdata
->res
.impl_id
= NULL
;
7524 if (clp
->cl_serverscope
!= NULL
&&
7525 !nfs41_same_server_scope(clp
->cl_serverscope
,
7526 cdata
->res
.server_scope
)) {
7527 dprintk("%s: server_scope mismatch detected\n",
7529 set_bit(NFS4CLNT_SERVER_SCOPE_MISMATCH
, &clp
->cl_state
);
7530 kfree(clp
->cl_serverscope
);
7531 clp
->cl_serverscope
= NULL
;
7534 if (clp
->cl_serverscope
== NULL
) {
7535 clp
->cl_serverscope
= cdata
->res
.server_scope
;
7536 cdata
->res
.server_scope
= NULL
;
7538 /* Save the EXCHANGE_ID verifier session trunk tests */
7539 memcpy(clp
->cl_confirm
.data
, cdata
->args
.verifier
->data
,
7540 sizeof(clp
->cl_confirm
.data
));
7543 cdata
->rpc_status
= status
;
7547 static void nfs4_exchange_id_release(void *data
)
7549 struct nfs41_exchange_id_data
*cdata
=
7550 (struct nfs41_exchange_id_data
*)data
;
7552 nfs_put_client(cdata
->args
.client
);
7554 xprt_put(cdata
->xprt
);
7555 rpc_clnt_xprt_switch_put(cdata
->args
.client
->cl_rpcclient
);
7557 kfree(cdata
->res
.impl_id
);
7558 kfree(cdata
->res
.server_scope
);
7559 kfree(cdata
->res
.server_owner
);
7563 static const struct rpc_call_ops nfs4_exchange_id_call_ops
= {
7564 .rpc_call_done
= nfs4_exchange_id_done
,
7565 .rpc_release
= nfs4_exchange_id_release
,
7569 * _nfs4_proc_exchange_id()
7571 * Wrapper for EXCHANGE_ID operation.
7573 static int _nfs4_proc_exchange_id(struct nfs_client
*clp
, struct rpc_cred
*cred
,
7574 u32 sp4_how
, struct rpc_xprt
*xprt
)
7576 nfs4_verifier verifier
;
7577 struct rpc_message msg
= {
7578 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_EXCHANGE_ID
],
7581 struct rpc_task_setup task_setup_data
= {
7582 .rpc_client
= clp
->cl_rpcclient
,
7583 .callback_ops
= &nfs4_exchange_id_call_ops
,
7584 .rpc_message
= &msg
,
7585 .flags
= RPC_TASK_ASYNC
| RPC_TASK_TIMEOUT
,
7587 struct nfs41_exchange_id_data
*calldata
;
7588 struct rpc_task
*task
;
7591 if (!atomic_inc_not_zero(&clp
->cl_count
))
7595 calldata
= kzalloc(sizeof(*calldata
), GFP_NOFS
);
7600 nfs4_init_boot_verifier(clp
, &verifier
);
7602 status
= nfs4_init_uniform_client_string(clp
);
7606 dprintk("NFS call exchange_id auth=%s, '%s'\n",
7607 clp
->cl_rpcclient
->cl_auth
->au_ops
->au_name
,
7610 calldata
->res
.server_owner
= kzalloc(sizeof(struct nfs41_server_owner
),
7613 if (unlikely(calldata
->res
.server_owner
== NULL
))
7616 calldata
->res
.server_scope
= kzalloc(sizeof(struct nfs41_server_scope
),
7618 if (unlikely(calldata
->res
.server_scope
== NULL
))
7619 goto out_server_owner
;
7621 calldata
->res
.impl_id
= kzalloc(sizeof(struct nfs41_impl_id
), GFP_NOFS
);
7622 if (unlikely(calldata
->res
.impl_id
== NULL
))
7623 goto out_server_scope
;
7627 calldata
->args
.state_protect
.how
= SP4_NONE
;
7631 calldata
->args
.state_protect
= nfs4_sp4_mach_cred_request
;
7641 calldata
->xprt
= xprt
;
7642 task_setup_data
.rpc_xprt
= xprt
;
7643 task_setup_data
.flags
=
7644 RPC_TASK_SOFT
|RPC_TASK_SOFTCONN
|RPC_TASK_ASYNC
;
7645 calldata
->args
.verifier
= &clp
->cl_confirm
;
7647 calldata
->args
.verifier
= &verifier
;
7649 calldata
->args
.client
= clp
;
7650 #ifdef CONFIG_NFS_V4_1_MIGRATION
7651 calldata
->args
.flags
= EXCHGID4_FLAG_SUPP_MOVED_REFER
|
7652 EXCHGID4_FLAG_BIND_PRINC_STATEID
|
7653 EXCHGID4_FLAG_SUPP_MOVED_MIGR
,
7655 calldata
->args
.flags
= EXCHGID4_FLAG_SUPP_MOVED_REFER
|
7656 EXCHGID4_FLAG_BIND_PRINC_STATEID
,
7658 msg
.rpc_argp
= &calldata
->args
;
7659 msg
.rpc_resp
= &calldata
->res
;
7660 task_setup_data
.callback_data
= calldata
;
7662 task
= rpc_run_task(&task_setup_data
);
7664 status
= PTR_ERR(task
);
7669 status
= rpc_wait_for_completion_task(task
);
7671 status
= calldata
->rpc_status
;
7672 } else /* session trunking test */
7673 status
= calldata
->rpc_status
;
7677 if (clp
->cl_implid
!= NULL
)
7678 dprintk("NFS reply exchange_id: Server Implementation ID: "
7679 "domain: %s, name: %s, date: %llu,%u\n",
7680 clp
->cl_implid
->domain
, clp
->cl_implid
->name
,
7681 clp
->cl_implid
->date
.seconds
,
7682 clp
->cl_implid
->date
.nseconds
);
7683 dprintk("NFS reply exchange_id: %d\n", status
);
7687 kfree(calldata
->res
.impl_id
);
7689 kfree(calldata
->res
.server_scope
);
7691 kfree(calldata
->res
.server_owner
);
7698 * nfs4_proc_exchange_id()
7700 * Returns zero, a negative errno, or a negative NFS4ERR status code.
7702 * Since the clientid has expired, all compounds using sessions
7703 * associated with the stale clientid will be returning
7704 * NFS4ERR_BADSESSION in the sequence operation, and will therefore
7705 * be in some phase of session reset.
7707 * Will attempt to negotiate SP4_MACH_CRED if krb5i / krb5p auth is used.
7709 int nfs4_proc_exchange_id(struct nfs_client
*clp
, struct rpc_cred
*cred
)
7711 rpc_authflavor_t authflavor
= clp
->cl_rpcclient
->cl_auth
->au_flavor
;
7714 /* try SP4_MACH_CRED if krb5i/p */
7715 if (authflavor
== RPC_AUTH_GSS_KRB5I
||
7716 authflavor
== RPC_AUTH_GSS_KRB5P
) {
7717 status
= _nfs4_proc_exchange_id(clp
, cred
, SP4_MACH_CRED
, NULL
);
7723 return _nfs4_proc_exchange_id(clp
, cred
, SP4_NONE
, NULL
);
7727 * nfs4_test_session_trunk
7729 * This is an add_xprt_test() test function called from
7730 * rpc_clnt_setup_test_and_add_xprt.
7732 * The rpc_xprt_switch is referrenced by rpc_clnt_setup_test_and_add_xprt
7733 * and is dereferrenced in nfs4_exchange_id_release
7735 * Upon success, add the new transport to the rpc_clnt
7737 * @clnt: struct rpc_clnt to get new transport
7738 * @xprt: the rpc_xprt to test
7739 * @data: call data for _nfs4_proc_exchange_id.
7741 int nfs4_test_session_trunk(struct rpc_clnt
*clnt
, struct rpc_xprt
*xprt
,
7744 struct nfs4_add_xprt_data
*adata
= (struct nfs4_add_xprt_data
*)data
;
7747 dprintk("--> %s try %s\n", __func__
,
7748 xprt
->address_strings
[RPC_DISPLAY_ADDR
]);
7750 sp4_how
= (adata
->clp
->cl_sp4_flags
== 0 ? SP4_NONE
: SP4_MACH_CRED
);
7752 /* Test connection for session trunking. Async exchange_id call */
7753 return _nfs4_proc_exchange_id(adata
->clp
, adata
->cred
, sp4_how
, xprt
);
7755 EXPORT_SYMBOL_GPL(nfs4_test_session_trunk
);
7757 static int _nfs4_proc_destroy_clientid(struct nfs_client
*clp
,
7758 struct rpc_cred
*cred
)
7760 struct rpc_message msg
= {
7761 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_DESTROY_CLIENTID
],
7767 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
7768 trace_nfs4_destroy_clientid(clp
, status
);
7770 dprintk("NFS: Got error %d from the server %s on "
7771 "DESTROY_CLIENTID.", status
, clp
->cl_hostname
);
7775 static int nfs4_proc_destroy_clientid(struct nfs_client
*clp
,
7776 struct rpc_cred
*cred
)
7781 for (loop
= NFS4_MAX_LOOP_ON_RECOVER
; loop
!= 0; loop
--) {
7782 ret
= _nfs4_proc_destroy_clientid(clp
, cred
);
7784 case -NFS4ERR_DELAY
:
7785 case -NFS4ERR_CLIENTID_BUSY
:
7795 int nfs4_destroy_clientid(struct nfs_client
*clp
)
7797 struct rpc_cred
*cred
;
7800 if (clp
->cl_mvops
->minor_version
< 1)
7802 if (clp
->cl_exchange_flags
== 0)
7804 if (clp
->cl_preserve_clid
)
7806 cred
= nfs4_get_clid_cred(clp
);
7807 ret
= nfs4_proc_destroy_clientid(clp
, cred
);
7812 case -NFS4ERR_STALE_CLIENTID
:
7813 clp
->cl_exchange_flags
= 0;
7819 struct nfs4_get_lease_time_data
{
7820 struct nfs4_get_lease_time_args
*args
;
7821 struct nfs4_get_lease_time_res
*res
;
7822 struct nfs_client
*clp
;
7825 static void nfs4_get_lease_time_prepare(struct rpc_task
*task
,
7828 struct nfs4_get_lease_time_data
*data
=
7829 (struct nfs4_get_lease_time_data
*)calldata
;
7831 dprintk("--> %s\n", __func__
);
7832 /* just setup sequence, do not trigger session recovery
7833 since we're invoked within one */
7834 nfs41_setup_sequence(data
->clp
->cl_session
,
7835 &data
->args
->la_seq_args
,
7836 &data
->res
->lr_seq_res
,
7838 dprintk("<-- %s\n", __func__
);
7842 * Called from nfs4_state_manager thread for session setup, so don't recover
7843 * from sequence operation or clientid errors.
7845 static void nfs4_get_lease_time_done(struct rpc_task
*task
, void *calldata
)
7847 struct nfs4_get_lease_time_data
*data
=
7848 (struct nfs4_get_lease_time_data
*)calldata
;
7850 dprintk("--> %s\n", __func__
);
7851 if (!nfs41_sequence_done(task
, &data
->res
->lr_seq_res
))
7853 switch (task
->tk_status
) {
7854 case -NFS4ERR_DELAY
:
7855 case -NFS4ERR_GRACE
:
7856 dprintk("%s Retry: tk_status %d\n", __func__
, task
->tk_status
);
7857 rpc_delay(task
, NFS4_POLL_RETRY_MIN
);
7858 task
->tk_status
= 0;
7860 case -NFS4ERR_RETRY_UNCACHED_REP
:
7861 rpc_restart_call_prepare(task
);
7864 dprintk("<-- %s\n", __func__
);
7867 static const struct rpc_call_ops nfs4_get_lease_time_ops
= {
7868 .rpc_call_prepare
= nfs4_get_lease_time_prepare
,
7869 .rpc_call_done
= nfs4_get_lease_time_done
,
7872 int nfs4_proc_get_lease_time(struct nfs_client
*clp
, struct nfs_fsinfo
*fsinfo
)
7874 struct rpc_task
*task
;
7875 struct nfs4_get_lease_time_args args
;
7876 struct nfs4_get_lease_time_res res
= {
7877 .lr_fsinfo
= fsinfo
,
7879 struct nfs4_get_lease_time_data data
= {
7884 struct rpc_message msg
= {
7885 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GET_LEASE_TIME
],
7889 struct rpc_task_setup task_setup
= {
7890 .rpc_client
= clp
->cl_rpcclient
,
7891 .rpc_message
= &msg
,
7892 .callback_ops
= &nfs4_get_lease_time_ops
,
7893 .callback_data
= &data
,
7894 .flags
= RPC_TASK_TIMEOUT
,
7898 nfs4_init_sequence(&args
.la_seq_args
, &res
.lr_seq_res
, 0);
7899 nfs4_set_sequence_privileged(&args
.la_seq_args
);
7900 dprintk("--> %s\n", __func__
);
7901 task
= rpc_run_task(&task_setup
);
7904 status
= PTR_ERR(task
);
7906 status
= task
->tk_status
;
7909 dprintk("<-- %s return %d\n", __func__
, status
);
7915 * Initialize the values to be used by the client in CREATE_SESSION
7916 * If nfs4_init_session set the fore channel request and response sizes,
7919 * Set the back channel max_resp_sz_cached to zero to force the client to
7920 * always set csa_cachethis to FALSE because the current implementation
7921 * of the back channel DRC only supports caching the CB_SEQUENCE operation.
7923 static void nfs4_init_channel_attrs(struct nfs41_create_session_args
*args
,
7924 struct rpc_clnt
*clnt
)
7926 unsigned int max_rqst_sz
, max_resp_sz
;
7927 unsigned int max_bc_payload
= rpc_max_bc_payload(clnt
);
7929 max_rqst_sz
= NFS_MAX_FILE_IO_SIZE
+ nfs41_maxwrite_overhead
;
7930 max_resp_sz
= NFS_MAX_FILE_IO_SIZE
+ nfs41_maxread_overhead
;
7932 /* Fore channel attributes */
7933 args
->fc_attrs
.max_rqst_sz
= max_rqst_sz
;
7934 args
->fc_attrs
.max_resp_sz
= max_resp_sz
;
7935 args
->fc_attrs
.max_ops
= NFS4_MAX_OPS
;
7936 args
->fc_attrs
.max_reqs
= max_session_slots
;
7938 dprintk("%s: Fore Channel : max_rqst_sz=%u max_resp_sz=%u "
7939 "max_ops=%u max_reqs=%u\n",
7941 args
->fc_attrs
.max_rqst_sz
, args
->fc_attrs
.max_resp_sz
,
7942 args
->fc_attrs
.max_ops
, args
->fc_attrs
.max_reqs
);
7944 /* Back channel attributes */
7945 args
->bc_attrs
.max_rqst_sz
= max_bc_payload
;
7946 args
->bc_attrs
.max_resp_sz
= max_bc_payload
;
7947 args
->bc_attrs
.max_resp_sz_cached
= 0;
7948 args
->bc_attrs
.max_ops
= NFS4_MAX_BACK_CHANNEL_OPS
;
7949 args
->bc_attrs
.max_reqs
= min_t(unsigned short, max_session_cb_slots
, 1);
7951 dprintk("%s: Back Channel : max_rqst_sz=%u max_resp_sz=%u "
7952 "max_resp_sz_cached=%u max_ops=%u max_reqs=%u\n",
7954 args
->bc_attrs
.max_rqst_sz
, args
->bc_attrs
.max_resp_sz
,
7955 args
->bc_attrs
.max_resp_sz_cached
, args
->bc_attrs
.max_ops
,
7956 args
->bc_attrs
.max_reqs
);
7959 static int nfs4_verify_fore_channel_attrs(struct nfs41_create_session_args
*args
,
7960 struct nfs41_create_session_res
*res
)
7962 struct nfs4_channel_attrs
*sent
= &args
->fc_attrs
;
7963 struct nfs4_channel_attrs
*rcvd
= &res
->fc_attrs
;
7965 if (rcvd
->max_resp_sz
> sent
->max_resp_sz
)
7968 * Our requested max_ops is the minimum we need; we're not
7969 * prepared to break up compounds into smaller pieces than that.
7970 * So, no point even trying to continue if the server won't
7973 if (rcvd
->max_ops
< sent
->max_ops
)
7975 if (rcvd
->max_reqs
== 0)
7977 if (rcvd
->max_reqs
> NFS4_MAX_SLOT_TABLE
)
7978 rcvd
->max_reqs
= NFS4_MAX_SLOT_TABLE
;
7982 static int nfs4_verify_back_channel_attrs(struct nfs41_create_session_args
*args
,
7983 struct nfs41_create_session_res
*res
)
7985 struct nfs4_channel_attrs
*sent
= &args
->bc_attrs
;
7986 struct nfs4_channel_attrs
*rcvd
= &res
->bc_attrs
;
7988 if (!(res
->flags
& SESSION4_BACK_CHAN
))
7990 if (rcvd
->max_rqst_sz
> sent
->max_rqst_sz
)
7992 if (rcvd
->max_resp_sz
< sent
->max_resp_sz
)
7994 if (rcvd
->max_resp_sz_cached
> sent
->max_resp_sz_cached
)
7996 if (rcvd
->max_ops
> sent
->max_ops
)
7998 if (rcvd
->max_reqs
> sent
->max_reqs
)
8004 static int nfs4_verify_channel_attrs(struct nfs41_create_session_args
*args
,
8005 struct nfs41_create_session_res
*res
)
8009 ret
= nfs4_verify_fore_channel_attrs(args
, res
);
8012 return nfs4_verify_back_channel_attrs(args
, res
);
8015 static void nfs4_update_session(struct nfs4_session
*session
,
8016 struct nfs41_create_session_res
*res
)
8018 nfs4_copy_sessionid(&session
->sess_id
, &res
->sessionid
);
8019 /* Mark client id and session as being confirmed */
8020 session
->clp
->cl_exchange_flags
|= EXCHGID4_FLAG_CONFIRMED_R
;
8021 set_bit(NFS4_SESSION_ESTABLISHED
, &session
->session_state
);
8022 session
->flags
= res
->flags
;
8023 memcpy(&session
->fc_attrs
, &res
->fc_attrs
, sizeof(session
->fc_attrs
));
8024 if (res
->flags
& SESSION4_BACK_CHAN
)
8025 memcpy(&session
->bc_attrs
, &res
->bc_attrs
,
8026 sizeof(session
->bc_attrs
));
8029 static int _nfs4_proc_create_session(struct nfs_client
*clp
,
8030 struct rpc_cred
*cred
)
8032 struct nfs4_session
*session
= clp
->cl_session
;
8033 struct nfs41_create_session_args args
= {
8035 .clientid
= clp
->cl_clientid
,
8036 .seqid
= clp
->cl_seqid
,
8037 .cb_program
= NFS4_CALLBACK
,
8039 struct nfs41_create_session_res res
;
8041 struct rpc_message msg
= {
8042 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_CREATE_SESSION
],
8049 nfs4_init_channel_attrs(&args
, clp
->cl_rpcclient
);
8050 args
.flags
= (SESSION4_PERSIST
| SESSION4_BACK_CHAN
);
8052 status
= rpc_call_sync(session
->clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
8053 trace_nfs4_create_session(clp
, status
);
8056 case -NFS4ERR_STALE_CLIENTID
:
8057 case -NFS4ERR_DELAY
:
8066 /* Verify the session's negotiated channel_attrs values */
8067 status
= nfs4_verify_channel_attrs(&args
, &res
);
8068 /* Increment the clientid slot sequence id */
8071 nfs4_update_session(session
, &res
);
8078 * Issues a CREATE_SESSION operation to the server.
8079 * It is the responsibility of the caller to verify the session is
8080 * expired before calling this routine.
8082 int nfs4_proc_create_session(struct nfs_client
*clp
, struct rpc_cred
*cred
)
8086 struct nfs4_session
*session
= clp
->cl_session
;
8088 dprintk("--> %s clp=%p session=%p\n", __func__
, clp
, session
);
8090 status
= _nfs4_proc_create_session(clp
, cred
);
8094 /* Init or reset the session slot tables */
8095 status
= nfs4_setup_session_slot_tables(session
);
8096 dprintk("slot table setup returned %d\n", status
);
8100 ptr
= (unsigned *)&session
->sess_id
.data
[0];
8101 dprintk("%s client>seqid %d sessionid %u:%u:%u:%u\n", __func__
,
8102 clp
->cl_seqid
, ptr
[0], ptr
[1], ptr
[2], ptr
[3]);
8104 dprintk("<-- %s\n", __func__
);
8109 * Issue the over-the-wire RPC DESTROY_SESSION.
8110 * The caller must serialize access to this routine.
8112 int nfs4_proc_destroy_session(struct nfs4_session
*session
,
8113 struct rpc_cred
*cred
)
8115 struct rpc_message msg
= {
8116 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_DESTROY_SESSION
],
8117 .rpc_argp
= session
,
8122 dprintk("--> nfs4_proc_destroy_session\n");
8124 /* session is still being setup */
8125 if (!test_and_clear_bit(NFS4_SESSION_ESTABLISHED
, &session
->session_state
))
8128 status
= rpc_call_sync(session
->clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
8129 trace_nfs4_destroy_session(session
->clp
, status
);
8132 dprintk("NFS: Got error %d from the server on DESTROY_SESSION. "
8133 "Session has been destroyed regardless...\n", status
);
8135 dprintk("<-- nfs4_proc_destroy_session\n");
8140 * Renew the cl_session lease.
8142 struct nfs4_sequence_data
{
8143 struct nfs_client
*clp
;
8144 struct nfs4_sequence_args args
;
8145 struct nfs4_sequence_res res
;
8148 static void nfs41_sequence_release(void *data
)
8150 struct nfs4_sequence_data
*calldata
= data
;
8151 struct nfs_client
*clp
= calldata
->clp
;
8153 if (atomic_read(&clp
->cl_count
) > 1)
8154 nfs4_schedule_state_renewal(clp
);
8155 nfs_put_client(clp
);
8159 static int nfs41_sequence_handle_errors(struct rpc_task
*task
, struct nfs_client
*clp
)
8161 switch(task
->tk_status
) {
8162 case -NFS4ERR_DELAY
:
8163 rpc_delay(task
, NFS4_POLL_RETRY_MAX
);
8166 nfs4_schedule_lease_recovery(clp
);
8171 static void nfs41_sequence_call_done(struct rpc_task
*task
, void *data
)
8173 struct nfs4_sequence_data
*calldata
= data
;
8174 struct nfs_client
*clp
= calldata
->clp
;
8176 if (!nfs41_sequence_done(task
, task
->tk_msg
.rpc_resp
))
8179 trace_nfs4_sequence(clp
, task
->tk_status
);
8180 if (task
->tk_status
< 0) {
8181 dprintk("%s ERROR %d\n", __func__
, task
->tk_status
);
8182 if (atomic_read(&clp
->cl_count
) == 1)
8185 if (nfs41_sequence_handle_errors(task
, clp
) == -EAGAIN
) {
8186 rpc_restart_call_prepare(task
);
8190 dprintk("%s rpc_cred %p\n", __func__
, task
->tk_msg
.rpc_cred
);
8192 dprintk("<-- %s\n", __func__
);
8195 static void nfs41_sequence_prepare(struct rpc_task
*task
, void *data
)
8197 struct nfs4_sequence_data
*calldata
= data
;
8198 struct nfs_client
*clp
= calldata
->clp
;
8199 struct nfs4_sequence_args
*args
;
8200 struct nfs4_sequence_res
*res
;
8202 args
= task
->tk_msg
.rpc_argp
;
8203 res
= task
->tk_msg
.rpc_resp
;
8205 nfs41_setup_sequence(clp
->cl_session
, args
, res
, task
);
8208 static const struct rpc_call_ops nfs41_sequence_ops
= {
8209 .rpc_call_done
= nfs41_sequence_call_done
,
8210 .rpc_call_prepare
= nfs41_sequence_prepare
,
8211 .rpc_release
= nfs41_sequence_release
,
8214 static struct rpc_task
*_nfs41_proc_sequence(struct nfs_client
*clp
,
8215 struct rpc_cred
*cred
,
8218 struct nfs4_sequence_data
*calldata
;
8219 struct rpc_message msg
= {
8220 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SEQUENCE
],
8223 struct rpc_task_setup task_setup_data
= {
8224 .rpc_client
= clp
->cl_rpcclient
,
8225 .rpc_message
= &msg
,
8226 .callback_ops
= &nfs41_sequence_ops
,
8227 .flags
= RPC_TASK_ASYNC
| RPC_TASK_TIMEOUT
,
8230 if (!atomic_inc_not_zero(&clp
->cl_count
))
8231 return ERR_PTR(-EIO
);
8232 calldata
= kzalloc(sizeof(*calldata
), GFP_NOFS
);
8233 if (calldata
== NULL
) {
8234 nfs_put_client(clp
);
8235 return ERR_PTR(-ENOMEM
);
8237 nfs4_init_sequence(&calldata
->args
, &calldata
->res
, 0);
8239 nfs4_set_sequence_privileged(&calldata
->args
);
8240 msg
.rpc_argp
= &calldata
->args
;
8241 msg
.rpc_resp
= &calldata
->res
;
8242 calldata
->clp
= clp
;
8243 task_setup_data
.callback_data
= calldata
;
8245 return rpc_run_task(&task_setup_data
);
8248 static int nfs41_proc_async_sequence(struct nfs_client
*clp
, struct rpc_cred
*cred
, unsigned renew_flags
)
8250 struct rpc_task
*task
;
8253 if ((renew_flags
& NFS4_RENEW_TIMEOUT
) == 0)
8255 task
= _nfs41_proc_sequence(clp
, cred
, false);
8257 ret
= PTR_ERR(task
);
8259 rpc_put_task_async(task
);
8260 dprintk("<-- %s status=%d\n", __func__
, ret
);
8264 static int nfs4_proc_sequence(struct nfs_client
*clp
, struct rpc_cred
*cred
)
8266 struct rpc_task
*task
;
8269 task
= _nfs41_proc_sequence(clp
, cred
, true);
8271 ret
= PTR_ERR(task
);
8274 ret
= rpc_wait_for_completion_task(task
);
8276 ret
= task
->tk_status
;
8279 dprintk("<-- %s status=%d\n", __func__
, ret
);
8283 struct nfs4_reclaim_complete_data
{
8284 struct nfs_client
*clp
;
8285 struct nfs41_reclaim_complete_args arg
;
8286 struct nfs41_reclaim_complete_res res
;
8289 static void nfs4_reclaim_complete_prepare(struct rpc_task
*task
, void *data
)
8291 struct nfs4_reclaim_complete_data
*calldata
= data
;
8293 nfs41_setup_sequence(calldata
->clp
->cl_session
,
8294 &calldata
->arg
.seq_args
,
8295 &calldata
->res
.seq_res
,
8299 static int nfs41_reclaim_complete_handle_errors(struct rpc_task
*task
, struct nfs_client
*clp
)
8301 switch(task
->tk_status
) {
8303 case -NFS4ERR_COMPLETE_ALREADY
:
8304 case -NFS4ERR_WRONG_CRED
: /* What to do here? */
8306 case -NFS4ERR_DELAY
:
8307 rpc_delay(task
, NFS4_POLL_RETRY_MAX
);
8309 case -NFS4ERR_RETRY_UNCACHED_REP
:
8312 nfs4_schedule_lease_recovery(clp
);
8317 static void nfs4_reclaim_complete_done(struct rpc_task
*task
, void *data
)
8319 struct nfs4_reclaim_complete_data
*calldata
= data
;
8320 struct nfs_client
*clp
= calldata
->clp
;
8321 struct nfs4_sequence_res
*res
= &calldata
->res
.seq_res
;
8323 dprintk("--> %s\n", __func__
);
8324 if (!nfs41_sequence_done(task
, res
))
8327 trace_nfs4_reclaim_complete(clp
, task
->tk_status
);
8328 if (nfs41_reclaim_complete_handle_errors(task
, clp
) == -EAGAIN
) {
8329 rpc_restart_call_prepare(task
);
8332 dprintk("<-- %s\n", __func__
);
8335 static void nfs4_free_reclaim_complete_data(void *data
)
8337 struct nfs4_reclaim_complete_data
*calldata
= data
;
8342 static const struct rpc_call_ops nfs4_reclaim_complete_call_ops
= {
8343 .rpc_call_prepare
= nfs4_reclaim_complete_prepare
,
8344 .rpc_call_done
= nfs4_reclaim_complete_done
,
8345 .rpc_release
= nfs4_free_reclaim_complete_data
,
8349 * Issue a global reclaim complete.
8351 static int nfs41_proc_reclaim_complete(struct nfs_client
*clp
,
8352 struct rpc_cred
*cred
)
8354 struct nfs4_reclaim_complete_data
*calldata
;
8355 struct rpc_task
*task
;
8356 struct rpc_message msg
= {
8357 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RECLAIM_COMPLETE
],
8360 struct rpc_task_setup task_setup_data
= {
8361 .rpc_client
= clp
->cl_rpcclient
,
8362 .rpc_message
= &msg
,
8363 .callback_ops
= &nfs4_reclaim_complete_call_ops
,
8364 .flags
= RPC_TASK_ASYNC
,
8366 int status
= -ENOMEM
;
8368 dprintk("--> %s\n", __func__
);
8369 calldata
= kzalloc(sizeof(*calldata
), GFP_NOFS
);
8370 if (calldata
== NULL
)
8372 calldata
->clp
= clp
;
8373 calldata
->arg
.one_fs
= 0;
8375 nfs4_init_sequence(&calldata
->arg
.seq_args
, &calldata
->res
.seq_res
, 0);
8376 nfs4_set_sequence_privileged(&calldata
->arg
.seq_args
);
8377 msg
.rpc_argp
= &calldata
->arg
;
8378 msg
.rpc_resp
= &calldata
->res
;
8379 task_setup_data
.callback_data
= calldata
;
8380 task
= rpc_run_task(&task_setup_data
);
8382 status
= PTR_ERR(task
);
8385 status
= nfs4_wait_for_completion_rpc_task(task
);
8387 status
= task
->tk_status
;
8391 dprintk("<-- %s status=%d\n", __func__
, status
);
8396 nfs4_layoutget_prepare(struct rpc_task
*task
, void *calldata
)
8398 struct nfs4_layoutget
*lgp
= calldata
;
8399 struct nfs_server
*server
= NFS_SERVER(lgp
->args
.inode
);
8400 struct nfs4_session
*session
= nfs4_get_session(server
);
8402 dprintk("--> %s\n", __func__
);
8403 nfs41_setup_sequence(session
, &lgp
->args
.seq_args
,
8404 &lgp
->res
.seq_res
, task
);
8405 dprintk("<-- %s\n", __func__
);
8408 static void nfs4_layoutget_done(struct rpc_task
*task
, void *calldata
)
8410 struct nfs4_layoutget
*lgp
= calldata
;
8412 dprintk("--> %s\n", __func__
);
8413 nfs41_sequence_process(task
, &lgp
->res
.seq_res
);
8414 dprintk("<-- %s\n", __func__
);
8418 nfs4_layoutget_handle_exception(struct rpc_task
*task
,
8419 struct nfs4_layoutget
*lgp
, struct nfs4_exception
*exception
)
8421 struct inode
*inode
= lgp
->args
.inode
;
8422 struct nfs_server
*server
= NFS_SERVER(inode
);
8423 struct pnfs_layout_hdr
*lo
;
8424 int nfs4err
= task
->tk_status
;
8425 int err
, status
= 0;
8428 dprintk("--> %s tk_status => %d\n", __func__
, -task
->tk_status
);
8435 * NFS4ERR_LAYOUTUNAVAILABLE means we are not supposed to use pnfs
8436 * on the file. set tk_status to -ENODATA to tell upper layer to
8439 case -NFS4ERR_LAYOUTUNAVAILABLE
:
8443 * NFS4ERR_BADLAYOUT means the MDS cannot return a layout of
8444 * length lgp->args.minlength != 0 (see RFC5661 section 18.43.3).
8446 case -NFS4ERR_BADLAYOUT
:
8447 status
= -EOVERFLOW
;
8450 * NFS4ERR_LAYOUTTRYLATER is a conflict with another client
8451 * (or clients) writing to the same RAID stripe except when
8452 * the minlength argument is 0 (see RFC5661 section 18.43.3).
8454 * Treat it like we would RECALLCONFLICT -- we retry for a little
8455 * while, and then eventually give up.
8457 case -NFS4ERR_LAYOUTTRYLATER
:
8458 if (lgp
->args
.minlength
== 0) {
8459 status
= -EOVERFLOW
;
8464 case -NFS4ERR_RECALLCONFLICT
:
8465 status
= -ERECALLCONFLICT
;
8467 case -NFS4ERR_DELEG_REVOKED
:
8468 case -NFS4ERR_ADMIN_REVOKED
:
8469 case -NFS4ERR_EXPIRED
:
8470 case -NFS4ERR_BAD_STATEID
:
8471 exception
->timeout
= 0;
8472 spin_lock(&inode
->i_lock
);
8473 lo
= NFS_I(inode
)->layout
;
8474 /* If the open stateid was bad, then recover it. */
8475 if (!lo
|| test_bit(NFS_LAYOUT_INVALID_STID
, &lo
->plh_flags
) ||
8476 nfs4_stateid_match_other(&lgp
->args
.stateid
,
8477 &lgp
->args
.ctx
->state
->stateid
)) {
8478 spin_unlock(&inode
->i_lock
);
8479 exception
->state
= lgp
->args
.ctx
->state
;
8480 exception
->stateid
= &lgp
->args
.stateid
;
8485 * Mark the bad layout state as invalid, then retry
8487 pnfs_mark_layout_stateid_invalid(lo
, &head
);
8488 spin_unlock(&inode
->i_lock
);
8489 pnfs_free_lseg_list(&head
);
8494 nfs4_sequence_free_slot(&lgp
->res
.seq_res
);
8495 err
= nfs4_handle_exception(server
, nfs4err
, exception
);
8497 if (exception
->retry
)
8503 dprintk("<-- %s\n", __func__
);
8507 static size_t max_response_pages(struct nfs_server
*server
)
8509 u32 max_resp_sz
= server
->nfs_client
->cl_session
->fc_attrs
.max_resp_sz
;
8510 return nfs_page_array_len(0, max_resp_sz
);
8513 static void nfs4_free_pages(struct page
**pages
, size_t size
)
8520 for (i
= 0; i
< size
; i
++) {
8523 __free_page(pages
[i
]);
8528 static struct page
**nfs4_alloc_pages(size_t size
, gfp_t gfp_flags
)
8530 struct page
**pages
;
8533 pages
= kcalloc(size
, sizeof(struct page
*), gfp_flags
);
8535 dprintk("%s: can't alloc array of %zu pages\n", __func__
, size
);
8539 for (i
= 0; i
< size
; i
++) {
8540 pages
[i
] = alloc_page(gfp_flags
);
8542 dprintk("%s: failed to allocate page\n", __func__
);
8543 nfs4_free_pages(pages
, size
);
8551 static void nfs4_layoutget_release(void *calldata
)
8553 struct nfs4_layoutget
*lgp
= calldata
;
8554 struct inode
*inode
= lgp
->args
.inode
;
8555 struct nfs_server
*server
= NFS_SERVER(inode
);
8556 size_t max_pages
= max_response_pages(server
);
8558 dprintk("--> %s\n", __func__
);
8559 nfs4_free_pages(lgp
->args
.layout
.pages
, max_pages
);
8560 pnfs_put_layout_hdr(NFS_I(inode
)->layout
);
8561 put_nfs_open_context(lgp
->args
.ctx
);
8563 dprintk("<-- %s\n", __func__
);
8566 static const struct rpc_call_ops nfs4_layoutget_call_ops
= {
8567 .rpc_call_prepare
= nfs4_layoutget_prepare
,
8568 .rpc_call_done
= nfs4_layoutget_done
,
8569 .rpc_release
= nfs4_layoutget_release
,
8572 struct pnfs_layout_segment
*
8573 nfs4_proc_layoutget(struct nfs4_layoutget
*lgp
, long *timeout
, gfp_t gfp_flags
)
8575 struct inode
*inode
= lgp
->args
.inode
;
8576 struct nfs_server
*server
= NFS_SERVER(inode
);
8577 size_t max_pages
= max_response_pages(server
);
8578 struct rpc_task
*task
;
8579 struct rpc_message msg
= {
8580 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LAYOUTGET
],
8581 .rpc_argp
= &lgp
->args
,
8582 .rpc_resp
= &lgp
->res
,
8583 .rpc_cred
= lgp
->cred
,
8585 struct rpc_task_setup task_setup_data
= {
8586 .rpc_client
= server
->client
,
8587 .rpc_message
= &msg
,
8588 .callback_ops
= &nfs4_layoutget_call_ops
,
8589 .callback_data
= lgp
,
8590 .flags
= RPC_TASK_ASYNC
,
8592 struct pnfs_layout_segment
*lseg
= NULL
;
8593 struct nfs4_exception exception
= {
8595 .timeout
= *timeout
,
8599 dprintk("--> %s\n", __func__
);
8601 /* nfs4_layoutget_release calls pnfs_put_layout_hdr */
8602 pnfs_get_layout_hdr(NFS_I(inode
)->layout
);
8604 lgp
->args
.layout
.pages
= nfs4_alloc_pages(max_pages
, gfp_flags
);
8605 if (!lgp
->args
.layout
.pages
) {
8606 nfs4_layoutget_release(lgp
);
8607 return ERR_PTR(-ENOMEM
);
8609 lgp
->args
.layout
.pglen
= max_pages
* PAGE_SIZE
;
8611 lgp
->res
.layoutp
= &lgp
->args
.layout
;
8612 lgp
->res
.seq_res
.sr_slot
= NULL
;
8613 nfs4_init_sequence(&lgp
->args
.seq_args
, &lgp
->res
.seq_res
, 0);
8615 task
= rpc_run_task(&task_setup_data
);
8617 return ERR_CAST(task
);
8618 status
= nfs4_wait_for_completion_rpc_task(task
);
8620 status
= nfs4_layoutget_handle_exception(task
, lgp
, &exception
);
8621 *timeout
= exception
.timeout
;
8624 trace_nfs4_layoutget(lgp
->args
.ctx
,
8630 /* if layoutp->len is 0, nfs4_layoutget_prepare called rpc_exit */
8631 if (status
== 0 && lgp
->res
.layoutp
->len
)
8632 lseg
= pnfs_layout_process(lgp
);
8633 nfs4_sequence_free_slot(&lgp
->res
.seq_res
);
8635 dprintk("<-- %s status=%d\n", __func__
, status
);
8637 return ERR_PTR(status
);
8642 nfs4_layoutreturn_prepare(struct rpc_task
*task
, void *calldata
)
8644 struct nfs4_layoutreturn
*lrp
= calldata
;
8646 dprintk("--> %s\n", __func__
);
8647 nfs41_setup_sequence(lrp
->clp
->cl_session
,
8648 &lrp
->args
.seq_args
,
8653 static void nfs4_layoutreturn_done(struct rpc_task
*task
, void *calldata
)
8655 struct nfs4_layoutreturn
*lrp
= calldata
;
8656 struct nfs_server
*server
;
8658 dprintk("--> %s\n", __func__
);
8660 if (!nfs41_sequence_process(task
, &lrp
->res
.seq_res
))
8663 server
= NFS_SERVER(lrp
->args
.inode
);
8664 switch (task
->tk_status
) {
8666 task
->tk_status
= 0;
8669 case -NFS4ERR_DELAY
:
8670 if (nfs4_async_handle_error(task
, server
, NULL
, NULL
) != -EAGAIN
)
8672 nfs4_sequence_free_slot(&lrp
->res
.seq_res
);
8673 rpc_restart_call_prepare(task
);
8676 dprintk("<-- %s\n", __func__
);
8679 static void nfs4_layoutreturn_release(void *calldata
)
8681 struct nfs4_layoutreturn
*lrp
= calldata
;
8682 struct pnfs_layout_hdr
*lo
= lrp
->args
.layout
;
8684 dprintk("--> %s\n", __func__
);
8685 pnfs_layoutreturn_free_lsegs(lo
, &lrp
->args
.stateid
, &lrp
->args
.range
,
8686 lrp
->res
.lrs_present
? &lrp
->res
.stateid
: NULL
);
8687 nfs4_sequence_free_slot(&lrp
->res
.seq_res
);
8688 if (lrp
->ld_private
.ops
&& lrp
->ld_private
.ops
->free
)
8689 lrp
->ld_private
.ops
->free(&lrp
->ld_private
);
8690 pnfs_put_layout_hdr(lrp
->args
.layout
);
8691 nfs_iput_and_deactive(lrp
->inode
);
8693 dprintk("<-- %s\n", __func__
);
8696 static const struct rpc_call_ops nfs4_layoutreturn_call_ops
= {
8697 .rpc_call_prepare
= nfs4_layoutreturn_prepare
,
8698 .rpc_call_done
= nfs4_layoutreturn_done
,
8699 .rpc_release
= nfs4_layoutreturn_release
,
8702 int nfs4_proc_layoutreturn(struct nfs4_layoutreturn
*lrp
, bool sync
)
8704 struct rpc_task
*task
;
8705 struct rpc_message msg
= {
8706 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LAYOUTRETURN
],
8707 .rpc_argp
= &lrp
->args
,
8708 .rpc_resp
= &lrp
->res
,
8709 .rpc_cred
= lrp
->cred
,
8711 struct rpc_task_setup task_setup_data
= {
8712 .rpc_client
= NFS_SERVER(lrp
->args
.inode
)->client
,
8713 .rpc_message
= &msg
,
8714 .callback_ops
= &nfs4_layoutreturn_call_ops
,
8715 .callback_data
= lrp
,
8719 nfs4_state_protect(NFS_SERVER(lrp
->args
.inode
)->nfs_client
,
8720 NFS_SP4_MACH_CRED_PNFS_CLEANUP
,
8721 &task_setup_data
.rpc_client
, &msg
);
8723 dprintk("--> %s\n", __func__
);
8725 lrp
->inode
= nfs_igrab_and_active(lrp
->args
.inode
);
8727 nfs4_layoutreturn_release(lrp
);
8730 task_setup_data
.flags
|= RPC_TASK_ASYNC
;
8732 nfs4_init_sequence(&lrp
->args
.seq_args
, &lrp
->res
.seq_res
, 1);
8733 task
= rpc_run_task(&task_setup_data
);
8735 return PTR_ERR(task
);
8737 status
= task
->tk_status
;
8738 trace_nfs4_layoutreturn(lrp
->args
.inode
, &lrp
->args
.stateid
, status
);
8739 dprintk("<-- %s status=%d\n", __func__
, status
);
8745 _nfs4_proc_getdeviceinfo(struct nfs_server
*server
,
8746 struct pnfs_device
*pdev
,
8747 struct rpc_cred
*cred
)
8749 struct nfs4_getdeviceinfo_args args
= {
8751 .notify_types
= NOTIFY_DEVICEID4_CHANGE
|
8752 NOTIFY_DEVICEID4_DELETE
,
8754 struct nfs4_getdeviceinfo_res res
= {
8757 struct rpc_message msg
= {
8758 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GETDEVICEINFO
],
8765 dprintk("--> %s\n", __func__
);
8766 status
= nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
8767 if (res
.notification
& ~args
.notify_types
)
8768 dprintk("%s: unsupported notification\n", __func__
);
8769 if (res
.notification
!= args
.notify_types
)
8772 dprintk("<-- %s status=%d\n", __func__
, status
);
8777 int nfs4_proc_getdeviceinfo(struct nfs_server
*server
,
8778 struct pnfs_device
*pdev
,
8779 struct rpc_cred
*cred
)
8781 struct nfs4_exception exception
= { };
8785 err
= nfs4_handle_exception(server
,
8786 _nfs4_proc_getdeviceinfo(server
, pdev
, cred
),
8788 } while (exception
.retry
);
8791 EXPORT_SYMBOL_GPL(nfs4_proc_getdeviceinfo
);
8793 static void nfs4_layoutcommit_prepare(struct rpc_task
*task
, void *calldata
)
8795 struct nfs4_layoutcommit_data
*data
= calldata
;
8796 struct nfs_server
*server
= NFS_SERVER(data
->args
.inode
);
8797 struct nfs4_session
*session
= nfs4_get_session(server
);
8799 nfs41_setup_sequence(session
,
8800 &data
->args
.seq_args
,
8806 nfs4_layoutcommit_done(struct rpc_task
*task
, void *calldata
)
8808 struct nfs4_layoutcommit_data
*data
= calldata
;
8809 struct nfs_server
*server
= NFS_SERVER(data
->args
.inode
);
8811 if (!nfs41_sequence_done(task
, &data
->res
.seq_res
))
8814 switch (task
->tk_status
) { /* Just ignore these failures */
8815 case -NFS4ERR_DELEG_REVOKED
: /* layout was recalled */
8816 case -NFS4ERR_BADIOMODE
: /* no IOMODE_RW layout for range */
8817 case -NFS4ERR_BADLAYOUT
: /* no layout */
8818 case -NFS4ERR_GRACE
: /* loca_recalim always false */
8819 task
->tk_status
= 0;
8823 if (nfs4_async_handle_error(task
, server
, NULL
, NULL
) == -EAGAIN
) {
8824 rpc_restart_call_prepare(task
);
8830 static void nfs4_layoutcommit_release(void *calldata
)
8832 struct nfs4_layoutcommit_data
*data
= calldata
;
8834 pnfs_cleanup_layoutcommit(data
);
8835 nfs_post_op_update_inode_force_wcc(data
->args
.inode
,
8837 put_rpccred(data
->cred
);
8838 nfs_iput_and_deactive(data
->inode
);
8842 static const struct rpc_call_ops nfs4_layoutcommit_ops
= {
8843 .rpc_call_prepare
= nfs4_layoutcommit_prepare
,
8844 .rpc_call_done
= nfs4_layoutcommit_done
,
8845 .rpc_release
= nfs4_layoutcommit_release
,
8849 nfs4_proc_layoutcommit(struct nfs4_layoutcommit_data
*data
, bool sync
)
8851 struct rpc_message msg
= {
8852 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LAYOUTCOMMIT
],
8853 .rpc_argp
= &data
->args
,
8854 .rpc_resp
= &data
->res
,
8855 .rpc_cred
= data
->cred
,
8857 struct rpc_task_setup task_setup_data
= {
8858 .task
= &data
->task
,
8859 .rpc_client
= NFS_CLIENT(data
->args
.inode
),
8860 .rpc_message
= &msg
,
8861 .callback_ops
= &nfs4_layoutcommit_ops
,
8862 .callback_data
= data
,
8864 struct rpc_task
*task
;
8867 dprintk("NFS: initiating layoutcommit call. sync %d "
8868 "lbw: %llu inode %lu\n", sync
,
8869 data
->args
.lastbytewritten
,
8870 data
->args
.inode
->i_ino
);
8873 data
->inode
= nfs_igrab_and_active(data
->args
.inode
);
8874 if (data
->inode
== NULL
) {
8875 nfs4_layoutcommit_release(data
);
8878 task_setup_data
.flags
= RPC_TASK_ASYNC
;
8880 nfs4_init_sequence(&data
->args
.seq_args
, &data
->res
.seq_res
, 1);
8881 task
= rpc_run_task(&task_setup_data
);
8883 return PTR_ERR(task
);
8885 status
= task
->tk_status
;
8886 trace_nfs4_layoutcommit(data
->args
.inode
, &data
->args
.stateid
, status
);
8887 dprintk("%s: status %d\n", __func__
, status
);
8893 * Use the state managment nfs_client cl_rpcclient, which uses krb5i (if
8894 * possible) as per RFC3530bis and RFC5661 Security Considerations sections
8897 _nfs41_proc_secinfo_no_name(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
8898 struct nfs_fsinfo
*info
,
8899 struct nfs4_secinfo_flavors
*flavors
, bool use_integrity
)
8901 struct nfs41_secinfo_no_name_args args
= {
8902 .style
= SECINFO_STYLE_CURRENT_FH
,
8904 struct nfs4_secinfo_res res
= {
8907 struct rpc_message msg
= {
8908 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SECINFO_NO_NAME
],
8912 struct rpc_clnt
*clnt
= server
->client
;
8913 struct rpc_cred
*cred
= NULL
;
8916 if (use_integrity
) {
8917 clnt
= server
->nfs_client
->cl_rpcclient
;
8918 cred
= nfs4_get_clid_cred(server
->nfs_client
);
8919 msg
.rpc_cred
= cred
;
8922 dprintk("--> %s\n", __func__
);
8923 status
= nfs4_call_sync(clnt
, server
, &msg
, &args
.seq_args
,
8925 dprintk("<-- %s status=%d\n", __func__
, status
);
8934 nfs41_proc_secinfo_no_name(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
8935 struct nfs_fsinfo
*info
, struct nfs4_secinfo_flavors
*flavors
)
8937 struct nfs4_exception exception
= { };
8940 /* first try using integrity protection */
8941 err
= -NFS4ERR_WRONGSEC
;
8943 /* try to use integrity protection with machine cred */
8944 if (_nfs4_is_integrity_protected(server
->nfs_client
))
8945 err
= _nfs41_proc_secinfo_no_name(server
, fhandle
, info
,
8949 * if unable to use integrity protection, or SECINFO with
8950 * integrity protection returns NFS4ERR_WRONGSEC (which is
8951 * disallowed by spec, but exists in deployed servers) use
8952 * the current filesystem's rpc_client and the user cred.
8954 if (err
== -NFS4ERR_WRONGSEC
)
8955 err
= _nfs41_proc_secinfo_no_name(server
, fhandle
, info
,
8960 case -NFS4ERR_WRONGSEC
:
8964 err
= nfs4_handle_exception(server
, err
, &exception
);
8966 } while (exception
.retry
);
8972 nfs41_find_root_sec(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
8973 struct nfs_fsinfo
*info
)
8977 rpc_authflavor_t flavor
= RPC_AUTH_MAXFLAVOR
;
8978 struct nfs4_secinfo_flavors
*flavors
;
8979 struct nfs4_secinfo4
*secinfo
;
8982 page
= alloc_page(GFP_KERNEL
);
8988 flavors
= page_address(page
);
8989 err
= nfs41_proc_secinfo_no_name(server
, fhandle
, info
, flavors
);
8992 * Fall back on "guess and check" method if
8993 * the server doesn't support SECINFO_NO_NAME
8995 if (err
== -NFS4ERR_WRONGSEC
|| err
== -ENOTSUPP
) {
8996 err
= nfs4_find_root_sec(server
, fhandle
, info
);
9002 for (i
= 0; i
< flavors
->num_flavors
; i
++) {
9003 secinfo
= &flavors
->flavors
[i
];
9005 switch (secinfo
->flavor
) {
9009 flavor
= rpcauth_get_pseudoflavor(secinfo
->flavor
,
9010 &secinfo
->flavor_info
);
9013 flavor
= RPC_AUTH_MAXFLAVOR
;
9017 if (!nfs_auth_info_match(&server
->auth_info
, flavor
))
9018 flavor
= RPC_AUTH_MAXFLAVOR
;
9020 if (flavor
!= RPC_AUTH_MAXFLAVOR
) {
9021 err
= nfs4_lookup_root_sec(server
, fhandle
,
9028 if (flavor
== RPC_AUTH_MAXFLAVOR
)
9039 static int _nfs41_test_stateid(struct nfs_server
*server
,
9040 nfs4_stateid
*stateid
,
9041 struct rpc_cred
*cred
)
9044 struct nfs41_test_stateid_args args
= {
9047 struct nfs41_test_stateid_res res
;
9048 struct rpc_message msg
= {
9049 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_TEST_STATEID
],
9054 struct rpc_clnt
*rpc_client
= server
->client
;
9056 nfs4_state_protect(server
->nfs_client
, NFS_SP4_MACH_CRED_STATEID
,
9059 dprintk("NFS call test_stateid %p\n", stateid
);
9060 nfs4_init_sequence(&args
.seq_args
, &res
.seq_res
, 0);
9061 nfs4_set_sequence_privileged(&args
.seq_args
);
9062 status
= nfs4_call_sync_sequence(rpc_client
, server
, &msg
,
9063 &args
.seq_args
, &res
.seq_res
);
9064 if (status
!= NFS_OK
) {
9065 dprintk("NFS reply test_stateid: failed, %d\n", status
);
9068 dprintk("NFS reply test_stateid: succeeded, %d\n", -res
.status
);
9072 static void nfs4_handle_delay_or_session_error(struct nfs_server
*server
,
9073 int err
, struct nfs4_exception
*exception
)
9075 exception
->retry
= 0;
9077 case -NFS4ERR_DELAY
:
9078 case -NFS4ERR_RETRY_UNCACHED_REP
:
9079 nfs4_handle_exception(server
, err
, exception
);
9081 case -NFS4ERR_BADSESSION
:
9082 case -NFS4ERR_BADSLOT
:
9083 case -NFS4ERR_BAD_HIGH_SLOT
:
9084 case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION
:
9085 case -NFS4ERR_DEADSESSION
:
9086 nfs4_do_handle_exception(server
, err
, exception
);
9091 * nfs41_test_stateid - perform a TEST_STATEID operation
9093 * @server: server / transport on which to perform the operation
9094 * @stateid: state ID to test
9097 * Returns NFS_OK if the server recognizes that "stateid" is valid.
9098 * Otherwise a negative NFS4ERR value is returned if the operation
9099 * failed or the state ID is not currently valid.
9101 static int nfs41_test_stateid(struct nfs_server
*server
,
9102 nfs4_stateid
*stateid
,
9103 struct rpc_cred
*cred
)
9105 struct nfs4_exception exception
= { };
9108 err
= _nfs41_test_stateid(server
, stateid
, cred
);
9109 nfs4_handle_delay_or_session_error(server
, err
, &exception
);
9110 } while (exception
.retry
);
9114 struct nfs_free_stateid_data
{
9115 struct nfs_server
*server
;
9116 struct nfs41_free_stateid_args args
;
9117 struct nfs41_free_stateid_res res
;
9120 static void nfs41_free_stateid_prepare(struct rpc_task
*task
, void *calldata
)
9122 struct nfs_free_stateid_data
*data
= calldata
;
9123 nfs41_setup_sequence(nfs4_get_session(data
->server
),
9124 &data
->args
.seq_args
,
9129 static void nfs41_free_stateid_done(struct rpc_task
*task
, void *calldata
)
9131 struct nfs_free_stateid_data
*data
= calldata
;
9133 nfs41_sequence_done(task
, &data
->res
.seq_res
);
9135 switch (task
->tk_status
) {
9136 case -NFS4ERR_DELAY
:
9137 if (nfs4_async_handle_error(task
, data
->server
, NULL
, NULL
) == -EAGAIN
)
9138 rpc_restart_call_prepare(task
);
9142 static void nfs41_free_stateid_release(void *calldata
)
9147 static const struct rpc_call_ops nfs41_free_stateid_ops
= {
9148 .rpc_call_prepare
= nfs41_free_stateid_prepare
,
9149 .rpc_call_done
= nfs41_free_stateid_done
,
9150 .rpc_release
= nfs41_free_stateid_release
,
9153 static struct rpc_task
*_nfs41_free_stateid(struct nfs_server
*server
,
9154 const nfs4_stateid
*stateid
,
9155 struct rpc_cred
*cred
,
9158 struct rpc_message msg
= {
9159 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_FREE_STATEID
],
9162 struct rpc_task_setup task_setup
= {
9163 .rpc_client
= server
->client
,
9164 .rpc_message
= &msg
,
9165 .callback_ops
= &nfs41_free_stateid_ops
,
9166 .flags
= RPC_TASK_ASYNC
,
9168 struct nfs_free_stateid_data
*data
;
9170 nfs4_state_protect(server
->nfs_client
, NFS_SP4_MACH_CRED_STATEID
,
9171 &task_setup
.rpc_client
, &msg
);
9173 dprintk("NFS call free_stateid %p\n", stateid
);
9174 data
= kmalloc(sizeof(*data
), GFP_NOFS
);
9176 return ERR_PTR(-ENOMEM
);
9177 data
->server
= server
;
9178 nfs4_stateid_copy(&data
->args
.stateid
, stateid
);
9180 task_setup
.callback_data
= data
;
9182 msg
.rpc_argp
= &data
->args
;
9183 msg
.rpc_resp
= &data
->res
;
9184 nfs4_init_sequence(&data
->args
.seq_args
, &data
->res
.seq_res
, 1);
9186 nfs4_set_sequence_privileged(&data
->args
.seq_args
);
9188 return rpc_run_task(&task_setup
);
9192 * nfs41_free_stateid - perform a FREE_STATEID operation
9194 * @server: server / transport on which to perform the operation
9195 * @stateid: state ID to release
9197 * @is_recovery: set to true if this call needs to be privileged
9199 * Note: this function is always asynchronous.
9201 static int nfs41_free_stateid(struct nfs_server
*server
,
9202 const nfs4_stateid
*stateid
,
9203 struct rpc_cred
*cred
,
9206 struct rpc_task
*task
;
9208 task
= _nfs41_free_stateid(server
, stateid
, cred
, is_recovery
);
9210 return PTR_ERR(task
);
9216 nfs41_free_lock_state(struct nfs_server
*server
, struct nfs4_lock_state
*lsp
)
9218 struct rpc_cred
*cred
= lsp
->ls_state
->owner
->so_cred
;
9220 nfs41_free_stateid(server
, &lsp
->ls_stateid
, cred
, false);
9221 nfs4_free_lock_state(server
, lsp
);
9224 static bool nfs41_match_stateid(const nfs4_stateid
*s1
,
9225 const nfs4_stateid
*s2
)
9227 if (s1
->type
!= s2
->type
)
9230 if (memcmp(s1
->other
, s2
->other
, sizeof(s1
->other
)) != 0)
9233 if (s1
->seqid
== s2
->seqid
)
9235 if (s1
->seqid
== 0 || s2
->seqid
== 0)
9241 #endif /* CONFIG_NFS_V4_1 */
9243 static bool nfs4_match_stateid(const nfs4_stateid
*s1
,
9244 const nfs4_stateid
*s2
)
9246 return nfs4_stateid_match(s1
, s2
);
9250 static const struct nfs4_state_recovery_ops nfs40_reboot_recovery_ops
= {
9251 .owner_flag_bit
= NFS_OWNER_RECLAIM_REBOOT
,
9252 .state_flag_bit
= NFS_STATE_RECLAIM_REBOOT
,
9253 .recover_open
= nfs4_open_reclaim
,
9254 .recover_lock
= nfs4_lock_reclaim
,
9255 .establish_clid
= nfs4_init_clientid
,
9256 .detect_trunking
= nfs40_discover_server_trunking
,
9259 #if defined(CONFIG_NFS_V4_1)
9260 static const struct nfs4_state_recovery_ops nfs41_reboot_recovery_ops
= {
9261 .owner_flag_bit
= NFS_OWNER_RECLAIM_REBOOT
,
9262 .state_flag_bit
= NFS_STATE_RECLAIM_REBOOT
,
9263 .recover_open
= nfs4_open_reclaim
,
9264 .recover_lock
= nfs4_lock_reclaim
,
9265 .establish_clid
= nfs41_init_clientid
,
9266 .reclaim_complete
= nfs41_proc_reclaim_complete
,
9267 .detect_trunking
= nfs41_discover_server_trunking
,
9269 #endif /* CONFIG_NFS_V4_1 */
9271 static const struct nfs4_state_recovery_ops nfs40_nograce_recovery_ops
= {
9272 .owner_flag_bit
= NFS_OWNER_RECLAIM_NOGRACE
,
9273 .state_flag_bit
= NFS_STATE_RECLAIM_NOGRACE
,
9274 .recover_open
= nfs40_open_expired
,
9275 .recover_lock
= nfs4_lock_expired
,
9276 .establish_clid
= nfs4_init_clientid
,
9279 #if defined(CONFIG_NFS_V4_1)
9280 static const struct nfs4_state_recovery_ops nfs41_nograce_recovery_ops
= {
9281 .owner_flag_bit
= NFS_OWNER_RECLAIM_NOGRACE
,
9282 .state_flag_bit
= NFS_STATE_RECLAIM_NOGRACE
,
9283 .recover_open
= nfs41_open_expired
,
9284 .recover_lock
= nfs41_lock_expired
,
9285 .establish_clid
= nfs41_init_clientid
,
9287 #endif /* CONFIG_NFS_V4_1 */
9289 static const struct nfs4_state_maintenance_ops nfs40_state_renewal_ops
= {
9290 .sched_state_renewal
= nfs4_proc_async_renew
,
9291 .get_state_renewal_cred_locked
= nfs4_get_renew_cred_locked
,
9292 .renew_lease
= nfs4_proc_renew
,
9295 #if defined(CONFIG_NFS_V4_1)
9296 static const struct nfs4_state_maintenance_ops nfs41_state_renewal_ops
= {
9297 .sched_state_renewal
= nfs41_proc_async_sequence
,
9298 .get_state_renewal_cred_locked
= nfs4_get_machine_cred_locked
,
9299 .renew_lease
= nfs4_proc_sequence
,
9303 static const struct nfs4_mig_recovery_ops nfs40_mig_recovery_ops
= {
9304 .get_locations
= _nfs40_proc_get_locations
,
9305 .fsid_present
= _nfs40_proc_fsid_present
,
9308 #if defined(CONFIG_NFS_V4_1)
9309 static const struct nfs4_mig_recovery_ops nfs41_mig_recovery_ops
= {
9310 .get_locations
= _nfs41_proc_get_locations
,
9311 .fsid_present
= _nfs41_proc_fsid_present
,
9313 #endif /* CONFIG_NFS_V4_1 */
9315 static const struct nfs4_minor_version_ops nfs_v4_0_minor_ops
= {
9317 .init_caps
= NFS_CAP_READDIRPLUS
9318 | NFS_CAP_ATOMIC_OPEN
9319 | NFS_CAP_POSIX_LOCK
,
9320 .init_client
= nfs40_init_client
,
9321 .shutdown_client
= nfs40_shutdown_client
,
9322 .match_stateid
= nfs4_match_stateid
,
9323 .find_root_sec
= nfs4_find_root_sec
,
9324 .free_lock_state
= nfs4_release_lockowner
,
9325 .test_and_free_expired
= nfs40_test_and_free_expired_stateid
,
9326 .alloc_seqid
= nfs_alloc_seqid
,
9327 .call_sync_ops
= &nfs40_call_sync_ops
,
9328 .reboot_recovery_ops
= &nfs40_reboot_recovery_ops
,
9329 .nograce_recovery_ops
= &nfs40_nograce_recovery_ops
,
9330 .state_renewal_ops
= &nfs40_state_renewal_ops
,
9331 .mig_recovery_ops
= &nfs40_mig_recovery_ops
,
9334 #if defined(CONFIG_NFS_V4_1)
9335 static struct nfs_seqid
*
9336 nfs_alloc_no_seqid(struct nfs_seqid_counter
*arg1
, gfp_t arg2
)
9341 static const struct nfs4_minor_version_ops nfs_v4_1_minor_ops
= {
9343 .init_caps
= NFS_CAP_READDIRPLUS
9344 | NFS_CAP_ATOMIC_OPEN
9345 | NFS_CAP_POSIX_LOCK
9346 | NFS_CAP_STATEID_NFSV41
9347 | NFS_CAP_ATOMIC_OPEN_V1
,
9348 .init_client
= nfs41_init_client
,
9349 .shutdown_client
= nfs41_shutdown_client
,
9350 .match_stateid
= nfs41_match_stateid
,
9351 .find_root_sec
= nfs41_find_root_sec
,
9352 .free_lock_state
= nfs41_free_lock_state
,
9353 .test_and_free_expired
= nfs41_test_and_free_expired_stateid
,
9354 .alloc_seqid
= nfs_alloc_no_seqid
,
9355 .session_trunk
= nfs4_test_session_trunk
,
9356 .call_sync_ops
= &nfs41_call_sync_ops
,
9357 .reboot_recovery_ops
= &nfs41_reboot_recovery_ops
,
9358 .nograce_recovery_ops
= &nfs41_nograce_recovery_ops
,
9359 .state_renewal_ops
= &nfs41_state_renewal_ops
,
9360 .mig_recovery_ops
= &nfs41_mig_recovery_ops
,
9364 #if defined(CONFIG_NFS_V4_2)
9365 static const struct nfs4_minor_version_ops nfs_v4_2_minor_ops
= {
9367 .init_caps
= NFS_CAP_READDIRPLUS
9368 | NFS_CAP_ATOMIC_OPEN
9369 | NFS_CAP_POSIX_LOCK
9370 | NFS_CAP_STATEID_NFSV41
9371 | NFS_CAP_ATOMIC_OPEN_V1
9374 | NFS_CAP_DEALLOCATE
9376 | NFS_CAP_LAYOUTSTATS
9378 .init_client
= nfs41_init_client
,
9379 .shutdown_client
= nfs41_shutdown_client
,
9380 .match_stateid
= nfs41_match_stateid
,
9381 .find_root_sec
= nfs41_find_root_sec
,
9382 .free_lock_state
= nfs41_free_lock_state
,
9383 .call_sync_ops
= &nfs41_call_sync_ops
,
9384 .test_and_free_expired
= nfs41_test_and_free_expired_stateid
,
9385 .alloc_seqid
= nfs_alloc_no_seqid
,
9386 .session_trunk
= nfs4_test_session_trunk
,
9387 .reboot_recovery_ops
= &nfs41_reboot_recovery_ops
,
9388 .nograce_recovery_ops
= &nfs41_nograce_recovery_ops
,
9389 .state_renewal_ops
= &nfs41_state_renewal_ops
,
9390 .mig_recovery_ops
= &nfs41_mig_recovery_ops
,
9394 const struct nfs4_minor_version_ops
*nfs_v4_minor_ops
[] = {
9395 [0] = &nfs_v4_0_minor_ops
,
9396 #if defined(CONFIG_NFS_V4_1)
9397 [1] = &nfs_v4_1_minor_ops
,
9399 #if defined(CONFIG_NFS_V4_2)
9400 [2] = &nfs_v4_2_minor_ops
,
9404 static ssize_t
nfs4_listxattr(struct dentry
*dentry
, char *list
, size_t size
)
9406 ssize_t error
, error2
;
9408 error
= generic_listxattr(dentry
, list
, size
);
9416 error2
= nfs4_listxattr_nfs4_label(d_inode(dentry
), list
, size
);
9419 return error
+ error2
;
9422 static const struct inode_operations nfs4_dir_inode_operations
= {
9423 .create
= nfs_create
,
9424 .lookup
= nfs_lookup
,
9425 .atomic_open
= nfs_atomic_open
,
9427 .unlink
= nfs_unlink
,
9428 .symlink
= nfs_symlink
,
9432 .rename
= nfs_rename
,
9433 .permission
= nfs_permission
,
9434 .getattr
= nfs_getattr
,
9435 .setattr
= nfs_setattr
,
9436 .listxattr
= nfs4_listxattr
,
9439 static const struct inode_operations nfs4_file_inode_operations
= {
9440 .permission
= nfs_permission
,
9441 .getattr
= nfs_getattr
,
9442 .setattr
= nfs_setattr
,
9443 .listxattr
= nfs4_listxattr
,
9446 const struct nfs_rpc_ops nfs_v4_clientops
= {
9447 .version
= 4, /* protocol version */
9448 .dentry_ops
= &nfs4_dentry_operations
,
9449 .dir_inode_ops
= &nfs4_dir_inode_operations
,
9450 .file_inode_ops
= &nfs4_file_inode_operations
,
9451 .file_ops
= &nfs4_file_operations
,
9452 .getroot
= nfs4_proc_get_root
,
9453 .submount
= nfs4_submount
,
9454 .try_mount
= nfs4_try_mount
,
9455 .getattr
= nfs4_proc_getattr
,
9456 .setattr
= nfs4_proc_setattr
,
9457 .lookup
= nfs4_proc_lookup
,
9458 .access
= nfs4_proc_access
,
9459 .readlink
= nfs4_proc_readlink
,
9460 .create
= nfs4_proc_create
,
9461 .remove
= nfs4_proc_remove
,
9462 .unlink_setup
= nfs4_proc_unlink_setup
,
9463 .unlink_rpc_prepare
= nfs4_proc_unlink_rpc_prepare
,
9464 .unlink_done
= nfs4_proc_unlink_done
,
9465 .rename_setup
= nfs4_proc_rename_setup
,
9466 .rename_rpc_prepare
= nfs4_proc_rename_rpc_prepare
,
9467 .rename_done
= nfs4_proc_rename_done
,
9468 .link
= nfs4_proc_link
,
9469 .symlink
= nfs4_proc_symlink
,
9470 .mkdir
= nfs4_proc_mkdir
,
9471 .rmdir
= nfs4_proc_remove
,
9472 .readdir
= nfs4_proc_readdir
,
9473 .mknod
= nfs4_proc_mknod
,
9474 .statfs
= nfs4_proc_statfs
,
9475 .fsinfo
= nfs4_proc_fsinfo
,
9476 .pathconf
= nfs4_proc_pathconf
,
9477 .set_capabilities
= nfs4_server_capabilities
,
9478 .decode_dirent
= nfs4_decode_dirent
,
9479 .pgio_rpc_prepare
= nfs4_proc_pgio_rpc_prepare
,
9480 .read_setup
= nfs4_proc_read_setup
,
9481 .read_done
= nfs4_read_done
,
9482 .write_setup
= nfs4_proc_write_setup
,
9483 .write_done
= nfs4_write_done
,
9484 .commit_setup
= nfs4_proc_commit_setup
,
9485 .commit_rpc_prepare
= nfs4_proc_commit_rpc_prepare
,
9486 .commit_done
= nfs4_commit_done
,
9487 .lock
= nfs4_proc_lock
,
9488 .clear_acl_cache
= nfs4_zap_acl_attr
,
9489 .close_context
= nfs4_close_context
,
9490 .open_context
= nfs4_atomic_open
,
9491 .have_delegation
= nfs4_have_delegation
,
9492 .return_delegation
= nfs4_inode_return_delegation
,
9493 .alloc_client
= nfs4_alloc_client
,
9494 .init_client
= nfs4_init_client
,
9495 .free_client
= nfs4_free_client
,
9496 .create_server
= nfs4_create_server
,
9497 .clone_server
= nfs_clone_server
,
9500 static const struct xattr_handler nfs4_xattr_nfs4_acl_handler
= {
9501 .name
= XATTR_NAME_NFSV4_ACL
,
9502 .list
= nfs4_xattr_list_nfs4_acl
,
9503 .get
= nfs4_xattr_get_nfs4_acl
,
9504 .set
= nfs4_xattr_set_nfs4_acl
,
9507 const struct xattr_handler
*nfs4_xattr_handlers
[] = {
9508 &nfs4_xattr_nfs4_acl_handler
,
9509 #ifdef CONFIG_NFS_V4_SECURITY_LABEL
9510 &nfs4_xattr_nfs4_label_handler
,