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
;
580 return (flavor
== RPC_AUTH_GSS_KRB5I
) || (flavor
== RPC_AUTH_GSS_KRB5P
);
583 static void do_renew_lease(struct nfs_client
*clp
, unsigned long timestamp
)
585 spin_lock(&clp
->cl_lock
);
586 if (time_before(clp
->cl_last_renewal
,timestamp
))
587 clp
->cl_last_renewal
= timestamp
;
588 spin_unlock(&clp
->cl_lock
);
591 static void renew_lease(const struct nfs_server
*server
, unsigned long timestamp
)
593 struct nfs_client
*clp
= server
->nfs_client
;
595 if (!nfs4_has_session(clp
))
596 do_renew_lease(clp
, timestamp
);
599 struct nfs4_call_sync_data
{
600 const struct nfs_server
*seq_server
;
601 struct nfs4_sequence_args
*seq_args
;
602 struct nfs4_sequence_res
*seq_res
;
605 void nfs4_init_sequence(struct nfs4_sequence_args
*args
,
606 struct nfs4_sequence_res
*res
, int cache_reply
)
608 args
->sa_slot
= NULL
;
609 args
->sa_cache_this
= cache_reply
;
610 args
->sa_privileged
= 0;
615 static void nfs4_set_sequence_privileged(struct nfs4_sequence_args
*args
)
617 args
->sa_privileged
= 1;
620 static void nfs40_sequence_free_slot(struct nfs4_sequence_res
*res
)
622 struct nfs4_slot
*slot
= res
->sr_slot
;
623 struct nfs4_slot_table
*tbl
;
626 spin_lock(&tbl
->slot_tbl_lock
);
627 if (!nfs41_wake_and_assign_slot(tbl
, slot
))
628 nfs4_free_slot(tbl
, slot
);
629 spin_unlock(&tbl
->slot_tbl_lock
);
634 static int nfs40_sequence_done(struct rpc_task
*task
,
635 struct nfs4_sequence_res
*res
)
637 if (res
->sr_slot
!= NULL
)
638 nfs40_sequence_free_slot(res
);
642 #if defined(CONFIG_NFS_V4_1)
644 static void nfs41_sequence_free_slot(struct nfs4_sequence_res
*res
)
646 struct nfs4_session
*session
;
647 struct nfs4_slot_table
*tbl
;
648 struct nfs4_slot
*slot
= res
->sr_slot
;
649 bool send_new_highest_used_slotid
= false;
652 session
= tbl
->session
;
654 /* Bump the slot sequence number */
659 spin_lock(&tbl
->slot_tbl_lock
);
660 /* Be nice to the server: try to ensure that the last transmitted
661 * value for highest_user_slotid <= target_highest_slotid
663 if (tbl
->highest_used_slotid
> tbl
->target_highest_slotid
)
664 send_new_highest_used_slotid
= true;
666 if (nfs41_wake_and_assign_slot(tbl
, slot
)) {
667 send_new_highest_used_slotid
= false;
670 nfs4_free_slot(tbl
, slot
);
672 if (tbl
->highest_used_slotid
!= NFS4_NO_SLOT
)
673 send_new_highest_used_slotid
= false;
675 spin_unlock(&tbl
->slot_tbl_lock
);
677 if (send_new_highest_used_slotid
)
678 nfs41_notify_server(session
->clp
);
679 if (waitqueue_active(&tbl
->slot_waitq
))
680 wake_up_all(&tbl
->slot_waitq
);
683 static int nfs41_sequence_process(struct rpc_task
*task
,
684 struct nfs4_sequence_res
*res
)
686 struct nfs4_session
*session
;
687 struct nfs4_slot
*slot
= res
->sr_slot
;
688 struct nfs_client
*clp
;
689 bool interrupted
= false;
694 /* don't increment the sequence number if the task wasn't sent */
695 if (!RPC_WAS_SENT(task
))
698 session
= slot
->table
->session
;
700 if (slot
->interrupted
) {
701 if (res
->sr_status
!= -NFS4ERR_DELAY
)
702 slot
->interrupted
= 0;
706 trace_nfs4_sequence_done(session
, res
);
707 /* Check the SEQUENCE operation status */
708 switch (res
->sr_status
) {
710 /* If previous op on slot was interrupted and we reused
711 * the seq# and got a reply from the cache, then retry
713 if (task
->tk_status
== -EREMOTEIO
&& interrupted
) {
717 /* Update the slot's sequence and clientid lease timer */
720 do_renew_lease(clp
, res
->sr_timestamp
);
721 /* Check sequence flags */
722 nfs41_handle_sequence_flag_errors(clp
, res
->sr_status_flags
,
724 nfs41_update_target_slotid(slot
->table
, slot
, res
);
728 * sr_status remains 1 if an RPC level error occurred.
729 * The server may or may not have processed the sequence
731 * Mark the slot as having hosted an interrupted RPC call.
733 slot
->interrupted
= 1;
736 /* The server detected a resend of the RPC call and
737 * returned NFS4ERR_DELAY as per Section 2.10.6.2
740 dprintk("%s: slot=%u seq=%u: Operation in progress\n",
745 case -NFS4ERR_BADSLOT
:
747 * The slot id we used was probably retired. Try again
748 * using a different slot id.
751 case -NFS4ERR_SEQ_MISORDERED
:
753 * Was the last operation on this sequence interrupted?
754 * If so, retry after bumping the sequence number.
761 * Could this slot have been previously retired?
762 * If so, then the server may be expecting seq_nr = 1!
764 if (slot
->seq_nr
!= 1) {
769 case -NFS4ERR_SEQ_FALSE_RETRY
:
773 /* Just update the slot sequence no. */
777 /* The session may be reset by one of the error handlers. */
778 dprintk("%s: Error %d free the slot \n", __func__
, res
->sr_status
);
782 if (rpc_restart_call_prepare(task
)) {
783 nfs41_sequence_free_slot(res
);
789 if (!rpc_restart_call(task
))
791 rpc_delay(task
, NFS4_POLL_RETRY_MAX
);
795 int nfs41_sequence_done(struct rpc_task
*task
, struct nfs4_sequence_res
*res
)
797 if (!nfs41_sequence_process(task
, res
))
799 if (res
->sr_slot
!= NULL
)
800 nfs41_sequence_free_slot(res
);
804 EXPORT_SYMBOL_GPL(nfs41_sequence_done
);
806 static int nfs4_sequence_process(struct rpc_task
*task
, struct nfs4_sequence_res
*res
)
808 if (res
->sr_slot
== NULL
)
810 if (res
->sr_slot
->table
->session
!= NULL
)
811 return nfs41_sequence_process(task
, res
);
812 return nfs40_sequence_done(task
, res
);
815 static void nfs4_sequence_free_slot(struct nfs4_sequence_res
*res
)
817 if (res
->sr_slot
!= NULL
) {
818 if (res
->sr_slot
->table
->session
!= NULL
)
819 nfs41_sequence_free_slot(res
);
821 nfs40_sequence_free_slot(res
);
825 int nfs4_sequence_done(struct rpc_task
*task
, struct nfs4_sequence_res
*res
)
827 if (res
->sr_slot
== NULL
)
829 if (!res
->sr_slot
->table
->session
)
830 return nfs40_sequence_done(task
, res
);
831 return nfs41_sequence_done(task
, res
);
833 EXPORT_SYMBOL_GPL(nfs4_sequence_done
);
835 static void nfs41_call_sync_prepare(struct rpc_task
*task
, void *calldata
)
837 struct nfs4_call_sync_data
*data
= calldata
;
839 dprintk("--> %s data->seq_server %p\n", __func__
, data
->seq_server
);
841 nfs4_setup_sequence(data
->seq_server
->nfs_client
,
842 data
->seq_args
, data
->seq_res
, task
);
845 static void nfs41_call_sync_done(struct rpc_task
*task
, void *calldata
)
847 struct nfs4_call_sync_data
*data
= calldata
;
849 nfs41_sequence_done(task
, data
->seq_res
);
852 static const struct rpc_call_ops nfs41_call_sync_ops
= {
853 .rpc_call_prepare
= nfs41_call_sync_prepare
,
854 .rpc_call_done
= nfs41_call_sync_done
,
857 #else /* !CONFIG_NFS_V4_1 */
859 static int nfs4_sequence_process(struct rpc_task
*task
, struct nfs4_sequence_res
*res
)
861 return nfs40_sequence_done(task
, res
);
864 static void nfs4_sequence_free_slot(struct nfs4_sequence_res
*res
)
866 if (res
->sr_slot
!= NULL
)
867 nfs40_sequence_free_slot(res
);
870 int nfs4_sequence_done(struct rpc_task
*task
,
871 struct nfs4_sequence_res
*res
)
873 return nfs40_sequence_done(task
, res
);
875 EXPORT_SYMBOL_GPL(nfs4_sequence_done
);
877 #endif /* !CONFIG_NFS_V4_1 */
879 int nfs4_setup_sequence(const struct nfs_client
*client
,
880 struct nfs4_sequence_args
*args
,
881 struct nfs4_sequence_res
*res
,
882 struct rpc_task
*task
)
884 struct nfs4_session
*session
= nfs4_get_session(client
);
885 struct nfs4_slot_table
*tbl
= client
->cl_slot_tbl
;
886 struct nfs4_slot
*slot
;
888 /* slot already allocated? */
889 if (res
->sr_slot
!= NULL
)
893 tbl
= &session
->fc_slot_table
;
894 task
->tk_timeout
= 0;
897 spin_lock(&tbl
->slot_tbl_lock
);
898 /* The state manager will wait until the slot table is empty */
899 if (nfs4_slot_tbl_draining(tbl
) && !args
->sa_privileged
)
902 slot
= nfs4_alloc_slot(tbl
);
904 /* Try again in 1/4 second */
905 if (slot
== ERR_PTR(-ENOMEM
))
906 task
->tk_timeout
= HZ
>> 2;
909 spin_unlock(&tbl
->slot_tbl_lock
);
911 slot
->privileged
= args
->sa_privileged
? 1 : 0;
912 args
->sa_slot
= slot
;
916 res
->sr_timestamp
= jiffies
;
917 res
->sr_status_flags
= 0;
921 trace_nfs4_setup_sequence(session
, args
);
923 rpc_call_start(task
);
927 if (args
->sa_privileged
)
928 rpc_sleep_on_priority(&tbl
->slot_tbl_waitq
, task
,
929 NULL
, RPC_PRIORITY_PRIVILEGED
);
931 rpc_sleep_on(&tbl
->slot_tbl_waitq
, task
, NULL
);
932 spin_unlock(&tbl
->slot_tbl_lock
);
935 EXPORT_SYMBOL_GPL(nfs4_setup_sequence
);
937 static void nfs40_call_sync_prepare(struct rpc_task
*task
, void *calldata
)
939 struct nfs4_call_sync_data
*data
= calldata
;
940 nfs4_setup_sequence(data
->seq_server
->nfs_client
,
941 data
->seq_args
, data
->seq_res
, task
);
944 static void nfs40_call_sync_done(struct rpc_task
*task
, void *calldata
)
946 struct nfs4_call_sync_data
*data
= calldata
;
947 nfs4_sequence_done(task
, data
->seq_res
);
950 static const struct rpc_call_ops nfs40_call_sync_ops
= {
951 .rpc_call_prepare
= nfs40_call_sync_prepare
,
952 .rpc_call_done
= nfs40_call_sync_done
,
955 static int nfs4_call_sync_sequence(struct rpc_clnt
*clnt
,
956 struct nfs_server
*server
,
957 struct rpc_message
*msg
,
958 struct nfs4_sequence_args
*args
,
959 struct nfs4_sequence_res
*res
)
962 struct rpc_task
*task
;
963 struct nfs_client
*clp
= server
->nfs_client
;
964 struct nfs4_call_sync_data data
= {
965 .seq_server
= server
,
969 struct rpc_task_setup task_setup
= {
972 .callback_ops
= clp
->cl_mvops
->call_sync_ops
,
973 .callback_data
= &data
976 task
= rpc_run_task(&task_setup
);
980 ret
= task
->tk_status
;
986 int nfs4_call_sync(struct rpc_clnt
*clnt
,
987 struct nfs_server
*server
,
988 struct rpc_message
*msg
,
989 struct nfs4_sequence_args
*args
,
990 struct nfs4_sequence_res
*res
,
993 nfs4_init_sequence(args
, res
, cache_reply
);
994 return nfs4_call_sync_sequence(clnt
, server
, msg
, args
, res
);
997 static void update_changeattr(struct inode
*dir
, struct nfs4_change_info
*cinfo
,
998 unsigned long timestamp
)
1000 struct nfs_inode
*nfsi
= NFS_I(dir
);
1002 spin_lock(&dir
->i_lock
);
1003 nfsi
->cache_validity
|= NFS_INO_INVALID_ATTR
|NFS_INO_INVALID_DATA
;
1004 if (cinfo
->atomic
&& cinfo
->before
== dir
->i_version
) {
1005 nfsi
->cache_validity
&= ~NFS_INO_REVAL_PAGECACHE
;
1006 nfsi
->attrtimeo_timestamp
= jiffies
;
1008 nfs_force_lookup_revalidate(dir
);
1009 if (cinfo
->before
!= dir
->i_version
)
1010 nfsi
->cache_validity
|= NFS_INO_INVALID_ACCESS
|
1011 NFS_INO_INVALID_ACL
;
1013 dir
->i_version
= cinfo
->after
;
1014 nfsi
->read_cache_jiffies
= timestamp
;
1015 nfsi
->attr_gencount
= nfs_inc_attr_generation_counter();
1016 nfs_fscache_invalidate(dir
);
1017 spin_unlock(&dir
->i_lock
);
1020 struct nfs4_opendata
{
1022 struct nfs_openargs o_arg
;
1023 struct nfs_openres o_res
;
1024 struct nfs_open_confirmargs c_arg
;
1025 struct nfs_open_confirmres c_res
;
1026 struct nfs4_string owner_name
;
1027 struct nfs4_string group_name
;
1028 struct nfs4_label
*a_label
;
1029 struct nfs_fattr f_attr
;
1030 struct nfs4_label
*f_label
;
1032 struct dentry
*dentry
;
1033 struct nfs4_state_owner
*owner
;
1034 struct nfs4_state
*state
;
1036 unsigned long timestamp
;
1037 unsigned int rpc_done
: 1;
1038 unsigned int file_created
: 1;
1039 unsigned int is_recover
: 1;
1044 static bool nfs4_clear_cap_atomic_open_v1(struct nfs_server
*server
,
1045 int err
, struct nfs4_exception
*exception
)
1049 if (!(server
->caps
& NFS_CAP_ATOMIC_OPEN_V1
))
1051 server
->caps
&= ~NFS_CAP_ATOMIC_OPEN_V1
;
1052 exception
->retry
= 1;
1057 nfs4_map_atomic_open_share(struct nfs_server
*server
,
1058 fmode_t fmode
, int openflags
)
1062 switch (fmode
& (FMODE_READ
| FMODE_WRITE
)) {
1064 res
= NFS4_SHARE_ACCESS_READ
;
1067 res
= NFS4_SHARE_ACCESS_WRITE
;
1069 case FMODE_READ
|FMODE_WRITE
:
1070 res
= NFS4_SHARE_ACCESS_BOTH
;
1072 if (!(server
->caps
& NFS_CAP_ATOMIC_OPEN_V1
))
1074 /* Want no delegation if we're using O_DIRECT */
1075 if (openflags
& O_DIRECT
)
1076 res
|= NFS4_SHARE_WANT_NO_DELEG
;
1081 static enum open_claim_type4
1082 nfs4_map_atomic_open_claim(struct nfs_server
*server
,
1083 enum open_claim_type4 claim
)
1085 if (server
->caps
& NFS_CAP_ATOMIC_OPEN_V1
)
1090 case NFS4_OPEN_CLAIM_FH
:
1091 return NFS4_OPEN_CLAIM_NULL
;
1092 case NFS4_OPEN_CLAIM_DELEG_CUR_FH
:
1093 return NFS4_OPEN_CLAIM_DELEGATE_CUR
;
1094 case NFS4_OPEN_CLAIM_DELEG_PREV_FH
:
1095 return NFS4_OPEN_CLAIM_DELEGATE_PREV
;
1099 static void nfs4_init_opendata_res(struct nfs4_opendata
*p
)
1101 p
->o_res
.f_attr
= &p
->f_attr
;
1102 p
->o_res
.f_label
= p
->f_label
;
1103 p
->o_res
.seqid
= p
->o_arg
.seqid
;
1104 p
->c_res
.seqid
= p
->c_arg
.seqid
;
1105 p
->o_res
.server
= p
->o_arg
.server
;
1106 p
->o_res
.access_request
= p
->o_arg
.access
;
1107 nfs_fattr_init(&p
->f_attr
);
1108 nfs_fattr_init_names(&p
->f_attr
, &p
->owner_name
, &p
->group_name
);
1111 static struct nfs4_opendata
*nfs4_opendata_alloc(struct dentry
*dentry
,
1112 struct nfs4_state_owner
*sp
, fmode_t fmode
, int flags
,
1113 const struct iattr
*attrs
,
1114 struct nfs4_label
*label
,
1115 enum open_claim_type4 claim
,
1118 struct dentry
*parent
= dget_parent(dentry
);
1119 struct inode
*dir
= d_inode(parent
);
1120 struct nfs_server
*server
= NFS_SERVER(dir
);
1121 struct nfs_seqid
*(*alloc_seqid
)(struct nfs_seqid_counter
*, gfp_t
);
1122 struct nfs4_opendata
*p
;
1124 p
= kzalloc(sizeof(*p
), gfp_mask
);
1128 p
->f_label
= nfs4_label_alloc(server
, gfp_mask
);
1129 if (IS_ERR(p
->f_label
))
1132 p
->a_label
= nfs4_label_alloc(server
, gfp_mask
);
1133 if (IS_ERR(p
->a_label
))
1136 alloc_seqid
= server
->nfs_client
->cl_mvops
->alloc_seqid
;
1137 p
->o_arg
.seqid
= alloc_seqid(&sp
->so_seqid
, gfp_mask
);
1138 if (IS_ERR(p
->o_arg
.seqid
))
1139 goto err_free_label
;
1140 nfs_sb_active(dentry
->d_sb
);
1141 p
->dentry
= dget(dentry
);
1144 atomic_inc(&sp
->so_count
);
1145 p
->o_arg
.open_flags
= flags
;
1146 p
->o_arg
.fmode
= fmode
& (FMODE_READ
|FMODE_WRITE
);
1147 p
->o_arg
.umask
= current_umask();
1148 p
->o_arg
.claim
= nfs4_map_atomic_open_claim(server
, claim
);
1149 p
->o_arg
.share_access
= nfs4_map_atomic_open_share(server
,
1151 /* don't put an ACCESS op in OPEN compound if O_EXCL, because ACCESS
1152 * will return permission denied for all bits until close */
1153 if (!(flags
& O_EXCL
)) {
1154 /* ask server to check for all possible rights as results
1156 switch (p
->o_arg
.claim
) {
1159 case NFS4_OPEN_CLAIM_NULL
:
1160 case NFS4_OPEN_CLAIM_FH
:
1161 p
->o_arg
.access
= NFS4_ACCESS_READ
|
1162 NFS4_ACCESS_MODIFY
|
1163 NFS4_ACCESS_EXTEND
|
1164 NFS4_ACCESS_EXECUTE
;
1167 p
->o_arg
.clientid
= server
->nfs_client
->cl_clientid
;
1168 p
->o_arg
.id
.create_time
= ktime_to_ns(sp
->so_seqid
.create_time
);
1169 p
->o_arg
.id
.uniquifier
= sp
->so_seqid
.owner_id
;
1170 p
->o_arg
.name
= &dentry
->d_name
;
1171 p
->o_arg
.server
= server
;
1172 p
->o_arg
.bitmask
= nfs4_bitmask(server
, label
);
1173 p
->o_arg
.open_bitmap
= &nfs4_fattr_bitmap
[0];
1174 p
->o_arg
.label
= nfs4_label_copy(p
->a_label
, label
);
1175 switch (p
->o_arg
.claim
) {
1176 case NFS4_OPEN_CLAIM_NULL
:
1177 case NFS4_OPEN_CLAIM_DELEGATE_CUR
:
1178 case NFS4_OPEN_CLAIM_DELEGATE_PREV
:
1179 p
->o_arg
.fh
= NFS_FH(dir
);
1181 case NFS4_OPEN_CLAIM_PREVIOUS
:
1182 case NFS4_OPEN_CLAIM_FH
:
1183 case NFS4_OPEN_CLAIM_DELEG_CUR_FH
:
1184 case NFS4_OPEN_CLAIM_DELEG_PREV_FH
:
1185 p
->o_arg
.fh
= NFS_FH(d_inode(dentry
));
1187 if (attrs
!= NULL
&& attrs
->ia_valid
!= 0) {
1190 p
->o_arg
.u
.attrs
= &p
->attrs
;
1191 memcpy(&p
->attrs
, attrs
, sizeof(p
->attrs
));
1194 verf
[1] = current
->pid
;
1195 memcpy(p
->o_arg
.u
.verifier
.data
, verf
,
1196 sizeof(p
->o_arg
.u
.verifier
.data
));
1198 p
->c_arg
.fh
= &p
->o_res
.fh
;
1199 p
->c_arg
.stateid
= &p
->o_res
.stateid
;
1200 p
->c_arg
.seqid
= p
->o_arg
.seqid
;
1201 nfs4_init_opendata_res(p
);
1202 kref_init(&p
->kref
);
1206 nfs4_label_free(p
->a_label
);
1208 nfs4_label_free(p
->f_label
);
1216 static void nfs4_opendata_free(struct kref
*kref
)
1218 struct nfs4_opendata
*p
= container_of(kref
,
1219 struct nfs4_opendata
, kref
);
1220 struct super_block
*sb
= p
->dentry
->d_sb
;
1222 nfs_free_seqid(p
->o_arg
.seqid
);
1223 nfs4_sequence_free_slot(&p
->o_res
.seq_res
);
1224 if (p
->state
!= NULL
)
1225 nfs4_put_open_state(p
->state
);
1226 nfs4_put_state_owner(p
->owner
);
1228 nfs4_label_free(p
->a_label
);
1229 nfs4_label_free(p
->f_label
);
1233 nfs_sb_deactive(sb
);
1234 nfs_fattr_free_names(&p
->f_attr
);
1235 kfree(p
->f_attr
.mdsthreshold
);
1239 static void nfs4_opendata_put(struct nfs4_opendata
*p
)
1242 kref_put(&p
->kref
, nfs4_opendata_free
);
1245 static bool nfs4_mode_match_open_stateid(struct nfs4_state
*state
,
1248 switch(fmode
& (FMODE_READ
|FMODE_WRITE
)) {
1249 case FMODE_READ
|FMODE_WRITE
:
1250 return state
->n_rdwr
!= 0;
1252 return state
->n_wronly
!= 0;
1254 return state
->n_rdonly
!= 0;
1260 static int can_open_cached(struct nfs4_state
*state
, fmode_t mode
, int open_mode
)
1264 if (open_mode
& (O_EXCL
|O_TRUNC
))
1266 switch (mode
& (FMODE_READ
|FMODE_WRITE
)) {
1268 ret
|= test_bit(NFS_O_RDONLY_STATE
, &state
->flags
) != 0
1269 && state
->n_rdonly
!= 0;
1272 ret
|= test_bit(NFS_O_WRONLY_STATE
, &state
->flags
) != 0
1273 && state
->n_wronly
!= 0;
1275 case FMODE_READ
|FMODE_WRITE
:
1276 ret
|= test_bit(NFS_O_RDWR_STATE
, &state
->flags
) != 0
1277 && state
->n_rdwr
!= 0;
1283 static int can_open_delegated(struct nfs_delegation
*delegation
, fmode_t fmode
,
1284 enum open_claim_type4 claim
)
1286 if (delegation
== NULL
)
1288 if ((delegation
->type
& fmode
) != fmode
)
1290 if (test_bit(NFS_DELEGATION_RETURNING
, &delegation
->flags
))
1293 case NFS4_OPEN_CLAIM_NULL
:
1294 case NFS4_OPEN_CLAIM_FH
:
1296 case NFS4_OPEN_CLAIM_PREVIOUS
:
1297 if (!test_bit(NFS_DELEGATION_NEED_RECLAIM
, &delegation
->flags
))
1302 nfs_mark_delegation_referenced(delegation
);
1306 static void update_open_stateflags(struct nfs4_state
*state
, fmode_t fmode
)
1315 case FMODE_READ
|FMODE_WRITE
:
1318 nfs4_state_set_mode_locked(state
, state
->state
| fmode
);
1321 #ifdef CONFIG_NFS_V4_1
1322 static bool nfs_open_stateid_recover_openmode(struct nfs4_state
*state
)
1324 if (state
->n_rdonly
&& !test_bit(NFS_O_RDONLY_STATE
, &state
->flags
))
1326 if (state
->n_wronly
&& !test_bit(NFS_O_WRONLY_STATE
, &state
->flags
))
1328 if (state
->n_rdwr
&& !test_bit(NFS_O_RDWR_STATE
, &state
->flags
))
1332 #endif /* CONFIG_NFS_V4_1 */
1334 static void nfs_test_and_clear_all_open_stateid(struct nfs4_state
*state
)
1336 struct nfs_client
*clp
= state
->owner
->so_server
->nfs_client
;
1337 bool need_recover
= false;
1339 if (test_and_clear_bit(NFS_O_RDONLY_STATE
, &state
->flags
) && state
->n_rdonly
)
1340 need_recover
= true;
1341 if (test_and_clear_bit(NFS_O_WRONLY_STATE
, &state
->flags
) && state
->n_wronly
)
1342 need_recover
= true;
1343 if (test_and_clear_bit(NFS_O_RDWR_STATE
, &state
->flags
) && state
->n_rdwr
)
1344 need_recover
= true;
1346 nfs4_state_mark_reclaim_nograce(clp
, state
);
1349 static bool nfs_need_update_open_stateid(struct nfs4_state
*state
,
1350 const nfs4_stateid
*stateid
, nfs4_stateid
*freeme
)
1352 if (test_and_set_bit(NFS_OPEN_STATE
, &state
->flags
) == 0)
1354 if (!nfs4_stateid_match_other(stateid
, &state
->open_stateid
)) {
1355 nfs4_stateid_copy(freeme
, &state
->open_stateid
);
1356 nfs_test_and_clear_all_open_stateid(state
);
1359 if (nfs4_stateid_is_newer(stateid
, &state
->open_stateid
))
1364 static void nfs_resync_open_stateid_locked(struct nfs4_state
*state
)
1366 if (!(state
->n_wronly
|| state
->n_rdonly
|| state
->n_rdwr
))
1368 if (state
->n_wronly
)
1369 set_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
1370 if (state
->n_rdonly
)
1371 set_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
1373 set_bit(NFS_O_RDWR_STATE
, &state
->flags
);
1374 set_bit(NFS_OPEN_STATE
, &state
->flags
);
1377 static void nfs_clear_open_stateid_locked(struct nfs4_state
*state
,
1378 nfs4_stateid
*stateid
, fmode_t fmode
)
1380 clear_bit(NFS_O_RDWR_STATE
, &state
->flags
);
1381 switch (fmode
& (FMODE_READ
|FMODE_WRITE
)) {
1383 clear_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
1386 clear_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
1389 clear_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
1390 clear_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
1391 clear_bit(NFS_OPEN_STATE
, &state
->flags
);
1393 if (stateid
== NULL
)
1395 /* Handle OPEN+OPEN_DOWNGRADE races */
1396 if (nfs4_stateid_match_other(stateid
, &state
->open_stateid
) &&
1397 !nfs4_stateid_is_newer(stateid
, &state
->open_stateid
)) {
1398 nfs_resync_open_stateid_locked(state
);
1401 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) == 0)
1402 nfs4_stateid_copy(&state
->stateid
, stateid
);
1403 nfs4_stateid_copy(&state
->open_stateid
, stateid
);
1406 static void nfs_clear_open_stateid(struct nfs4_state
*state
,
1407 nfs4_stateid
*arg_stateid
,
1408 nfs4_stateid
*stateid
, fmode_t fmode
)
1410 write_seqlock(&state
->seqlock
);
1411 /* Ignore, if the CLOSE argment doesn't match the current stateid */
1412 if (nfs4_state_match_open_stateid_other(state
, arg_stateid
))
1413 nfs_clear_open_stateid_locked(state
, stateid
, fmode
);
1414 write_sequnlock(&state
->seqlock
);
1415 if (test_bit(NFS_STATE_RECLAIM_NOGRACE
, &state
->flags
))
1416 nfs4_schedule_state_manager(state
->owner
->so_server
->nfs_client
);
1419 static void nfs_set_open_stateid_locked(struct nfs4_state
*state
,
1420 const nfs4_stateid
*stateid
, fmode_t fmode
,
1421 nfs4_stateid
*freeme
)
1425 set_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
1428 set_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
1430 case FMODE_READ
|FMODE_WRITE
:
1431 set_bit(NFS_O_RDWR_STATE
, &state
->flags
);
1433 if (!nfs_need_update_open_stateid(state
, stateid
, freeme
))
1435 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) == 0)
1436 nfs4_stateid_copy(&state
->stateid
, stateid
);
1437 nfs4_stateid_copy(&state
->open_stateid
, stateid
);
1440 static void __update_open_stateid(struct nfs4_state
*state
,
1441 const nfs4_stateid
*open_stateid
,
1442 const nfs4_stateid
*deleg_stateid
,
1444 nfs4_stateid
*freeme
)
1447 * Protect the call to nfs4_state_set_mode_locked and
1448 * serialise the stateid update
1450 spin_lock(&state
->owner
->so_lock
);
1451 write_seqlock(&state
->seqlock
);
1452 if (deleg_stateid
!= NULL
) {
1453 nfs4_stateid_copy(&state
->stateid
, deleg_stateid
);
1454 set_bit(NFS_DELEGATED_STATE
, &state
->flags
);
1456 if (open_stateid
!= NULL
)
1457 nfs_set_open_stateid_locked(state
, open_stateid
, fmode
, freeme
);
1458 write_sequnlock(&state
->seqlock
);
1459 update_open_stateflags(state
, fmode
);
1460 spin_unlock(&state
->owner
->so_lock
);
1463 static int update_open_stateid(struct nfs4_state
*state
,
1464 const nfs4_stateid
*open_stateid
,
1465 const nfs4_stateid
*delegation
,
1468 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
1469 struct nfs_client
*clp
= server
->nfs_client
;
1470 struct nfs_inode
*nfsi
= NFS_I(state
->inode
);
1471 struct nfs_delegation
*deleg_cur
;
1472 nfs4_stateid freeme
= { };
1475 fmode
&= (FMODE_READ
|FMODE_WRITE
);
1478 deleg_cur
= rcu_dereference(nfsi
->delegation
);
1479 if (deleg_cur
== NULL
)
1482 spin_lock(&deleg_cur
->lock
);
1483 if (rcu_dereference(nfsi
->delegation
) != deleg_cur
||
1484 test_bit(NFS_DELEGATION_RETURNING
, &deleg_cur
->flags
) ||
1485 (deleg_cur
->type
& fmode
) != fmode
)
1486 goto no_delegation_unlock
;
1488 if (delegation
== NULL
)
1489 delegation
= &deleg_cur
->stateid
;
1490 else if (!nfs4_stateid_match(&deleg_cur
->stateid
, delegation
))
1491 goto no_delegation_unlock
;
1493 nfs_mark_delegation_referenced(deleg_cur
);
1494 __update_open_stateid(state
, open_stateid
, &deleg_cur
->stateid
,
1497 no_delegation_unlock
:
1498 spin_unlock(&deleg_cur
->lock
);
1502 if (!ret
&& open_stateid
!= NULL
) {
1503 __update_open_stateid(state
, open_stateid
, NULL
, fmode
, &freeme
);
1506 if (test_bit(NFS_STATE_RECLAIM_NOGRACE
, &state
->flags
))
1507 nfs4_schedule_state_manager(clp
);
1508 if (freeme
.type
!= 0)
1509 nfs4_test_and_free_stateid(server
, &freeme
,
1510 state
->owner
->so_cred
);
1515 static bool nfs4_update_lock_stateid(struct nfs4_lock_state
*lsp
,
1516 const nfs4_stateid
*stateid
)
1518 struct nfs4_state
*state
= lsp
->ls_state
;
1521 spin_lock(&state
->state_lock
);
1522 if (!nfs4_stateid_match_other(stateid
, &lsp
->ls_stateid
))
1524 if (!nfs4_stateid_is_newer(stateid
, &lsp
->ls_stateid
))
1526 nfs4_stateid_copy(&lsp
->ls_stateid
, stateid
);
1529 spin_unlock(&state
->state_lock
);
1533 static void nfs4_return_incompatible_delegation(struct inode
*inode
, fmode_t fmode
)
1535 struct nfs_delegation
*delegation
;
1538 delegation
= rcu_dereference(NFS_I(inode
)->delegation
);
1539 if (delegation
== NULL
|| (delegation
->type
& fmode
) == fmode
) {
1544 nfs4_inode_return_delegation(inode
);
1547 static struct nfs4_state
*nfs4_try_open_cached(struct nfs4_opendata
*opendata
)
1549 struct nfs4_state
*state
= opendata
->state
;
1550 struct nfs_inode
*nfsi
= NFS_I(state
->inode
);
1551 struct nfs_delegation
*delegation
;
1552 int open_mode
= opendata
->o_arg
.open_flags
;
1553 fmode_t fmode
= opendata
->o_arg
.fmode
;
1554 enum open_claim_type4 claim
= opendata
->o_arg
.claim
;
1555 nfs4_stateid stateid
;
1559 spin_lock(&state
->owner
->so_lock
);
1560 if (can_open_cached(state
, fmode
, open_mode
)) {
1561 update_open_stateflags(state
, fmode
);
1562 spin_unlock(&state
->owner
->so_lock
);
1563 goto out_return_state
;
1565 spin_unlock(&state
->owner
->so_lock
);
1567 delegation
= rcu_dereference(nfsi
->delegation
);
1568 if (!can_open_delegated(delegation
, fmode
, claim
)) {
1572 /* Save the delegation */
1573 nfs4_stateid_copy(&stateid
, &delegation
->stateid
);
1575 nfs_release_seqid(opendata
->o_arg
.seqid
);
1576 if (!opendata
->is_recover
) {
1577 ret
= nfs_may_open(state
->inode
, state
->owner
->so_cred
, open_mode
);
1583 /* Try to update the stateid using the delegation */
1584 if (update_open_stateid(state
, NULL
, &stateid
, fmode
))
1585 goto out_return_state
;
1588 return ERR_PTR(ret
);
1590 atomic_inc(&state
->count
);
1595 nfs4_opendata_check_deleg(struct nfs4_opendata
*data
, struct nfs4_state
*state
)
1597 struct nfs_client
*clp
= NFS_SERVER(state
->inode
)->nfs_client
;
1598 struct nfs_delegation
*delegation
;
1599 int delegation_flags
= 0;
1602 delegation
= rcu_dereference(NFS_I(state
->inode
)->delegation
);
1604 delegation_flags
= delegation
->flags
;
1606 switch (data
->o_arg
.claim
) {
1609 case NFS4_OPEN_CLAIM_DELEGATE_CUR
:
1610 case NFS4_OPEN_CLAIM_DELEG_CUR_FH
:
1611 pr_err_ratelimited("NFS: Broken NFSv4 server %s is "
1612 "returning a delegation for "
1613 "OPEN(CLAIM_DELEGATE_CUR)\n",
1617 if ((delegation_flags
& 1UL<<NFS_DELEGATION_NEED_RECLAIM
) == 0)
1618 nfs_inode_set_delegation(state
->inode
,
1619 data
->owner
->so_cred
,
1622 nfs_inode_reclaim_delegation(state
->inode
,
1623 data
->owner
->so_cred
,
1628 * Check the inode attributes against the CLAIM_PREVIOUS returned attributes
1629 * and update the nfs4_state.
1631 static struct nfs4_state
*
1632 _nfs4_opendata_reclaim_to_nfs4_state(struct nfs4_opendata
*data
)
1634 struct inode
*inode
= data
->state
->inode
;
1635 struct nfs4_state
*state
= data
->state
;
1638 if (!data
->rpc_done
) {
1639 if (data
->rpc_status
)
1640 return ERR_PTR(data
->rpc_status
);
1641 /* cached opens have already been processed */
1645 ret
= nfs_refresh_inode(inode
, &data
->f_attr
);
1647 return ERR_PTR(ret
);
1649 if (data
->o_res
.delegation_type
!= 0)
1650 nfs4_opendata_check_deleg(data
, state
);
1652 update_open_stateid(state
, &data
->o_res
.stateid
, NULL
,
1654 atomic_inc(&state
->count
);
1659 static struct nfs4_state
*
1660 _nfs4_opendata_to_nfs4_state(struct nfs4_opendata
*data
)
1662 struct inode
*inode
;
1663 struct nfs4_state
*state
= NULL
;
1666 if (!data
->rpc_done
) {
1667 state
= nfs4_try_open_cached(data
);
1668 trace_nfs4_cached_open(data
->state
);
1673 if (!(data
->f_attr
.valid
& NFS_ATTR_FATTR
))
1675 inode
= nfs_fhget(data
->dir
->d_sb
, &data
->o_res
.fh
, &data
->f_attr
, data
->f_label
);
1676 ret
= PTR_ERR(inode
);
1680 state
= nfs4_get_open_state(inode
, data
->owner
);
1683 if (data
->o_res
.delegation_type
!= 0)
1684 nfs4_opendata_check_deleg(data
, state
);
1685 update_open_stateid(state
, &data
->o_res
.stateid
, NULL
,
1689 nfs_release_seqid(data
->o_arg
.seqid
);
1694 return ERR_PTR(ret
);
1697 static struct nfs4_state
*
1698 nfs4_opendata_to_nfs4_state(struct nfs4_opendata
*data
)
1700 struct nfs4_state
*ret
;
1702 if (data
->o_arg
.claim
== NFS4_OPEN_CLAIM_PREVIOUS
)
1703 ret
=_nfs4_opendata_reclaim_to_nfs4_state(data
);
1705 ret
= _nfs4_opendata_to_nfs4_state(data
);
1706 nfs4_sequence_free_slot(&data
->o_res
.seq_res
);
1710 static struct nfs_open_context
*nfs4_state_find_open_context(struct nfs4_state
*state
)
1712 struct nfs_inode
*nfsi
= NFS_I(state
->inode
);
1713 struct nfs_open_context
*ctx
;
1715 spin_lock(&state
->inode
->i_lock
);
1716 list_for_each_entry(ctx
, &nfsi
->open_files
, list
) {
1717 if (ctx
->state
!= state
)
1719 get_nfs_open_context(ctx
);
1720 spin_unlock(&state
->inode
->i_lock
);
1723 spin_unlock(&state
->inode
->i_lock
);
1724 return ERR_PTR(-ENOENT
);
1727 static struct nfs4_opendata
*nfs4_open_recoverdata_alloc(struct nfs_open_context
*ctx
,
1728 struct nfs4_state
*state
, enum open_claim_type4 claim
)
1730 struct nfs4_opendata
*opendata
;
1732 opendata
= nfs4_opendata_alloc(ctx
->dentry
, state
->owner
, 0, 0,
1733 NULL
, NULL
, claim
, GFP_NOFS
);
1734 if (opendata
== NULL
)
1735 return ERR_PTR(-ENOMEM
);
1736 opendata
->state
= state
;
1737 atomic_inc(&state
->count
);
1741 static int nfs4_open_recover_helper(struct nfs4_opendata
*opendata
,
1744 struct nfs4_state
*newstate
;
1747 if (!nfs4_mode_match_open_stateid(opendata
->state
, fmode
))
1749 opendata
->o_arg
.open_flags
= 0;
1750 opendata
->o_arg
.fmode
= fmode
;
1751 opendata
->o_arg
.share_access
= nfs4_map_atomic_open_share(
1752 NFS_SB(opendata
->dentry
->d_sb
),
1754 memset(&opendata
->o_res
, 0, sizeof(opendata
->o_res
));
1755 memset(&opendata
->c_res
, 0, sizeof(opendata
->c_res
));
1756 nfs4_init_opendata_res(opendata
);
1757 ret
= _nfs4_recover_proc_open(opendata
);
1760 newstate
= nfs4_opendata_to_nfs4_state(opendata
);
1761 if (IS_ERR(newstate
))
1762 return PTR_ERR(newstate
);
1763 if (newstate
!= opendata
->state
)
1765 nfs4_close_state(newstate
, fmode
);
1769 static int nfs4_open_recover(struct nfs4_opendata
*opendata
, struct nfs4_state
*state
)
1773 /* Don't trigger recovery in nfs_test_and_clear_all_open_stateid */
1774 clear_bit(NFS_O_RDWR_STATE
, &state
->flags
);
1775 clear_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
1776 clear_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
1777 /* memory barrier prior to reading state->n_* */
1778 clear_bit(NFS_DELEGATED_STATE
, &state
->flags
);
1779 clear_bit(NFS_OPEN_STATE
, &state
->flags
);
1781 ret
= nfs4_open_recover_helper(opendata
, FMODE_READ
|FMODE_WRITE
);
1784 ret
= nfs4_open_recover_helper(opendata
, FMODE_WRITE
);
1787 ret
= nfs4_open_recover_helper(opendata
, FMODE_READ
);
1791 * We may have performed cached opens for all three recoveries.
1792 * Check if we need to update the current stateid.
1794 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) == 0 &&
1795 !nfs4_stateid_match(&state
->stateid
, &state
->open_stateid
)) {
1796 write_seqlock(&state
->seqlock
);
1797 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) == 0)
1798 nfs4_stateid_copy(&state
->stateid
, &state
->open_stateid
);
1799 write_sequnlock(&state
->seqlock
);
1806 * reclaim state on the server after a reboot.
1808 static int _nfs4_do_open_reclaim(struct nfs_open_context
*ctx
, struct nfs4_state
*state
)
1810 struct nfs_delegation
*delegation
;
1811 struct nfs4_opendata
*opendata
;
1812 fmode_t delegation_type
= 0;
1815 opendata
= nfs4_open_recoverdata_alloc(ctx
, state
,
1816 NFS4_OPEN_CLAIM_PREVIOUS
);
1817 if (IS_ERR(opendata
))
1818 return PTR_ERR(opendata
);
1820 delegation
= rcu_dereference(NFS_I(state
->inode
)->delegation
);
1821 if (delegation
!= NULL
&& test_bit(NFS_DELEGATION_NEED_RECLAIM
, &delegation
->flags
) != 0)
1822 delegation_type
= delegation
->type
;
1824 opendata
->o_arg
.u
.delegation_type
= delegation_type
;
1825 status
= nfs4_open_recover(opendata
, state
);
1826 nfs4_opendata_put(opendata
);
1830 static int nfs4_do_open_reclaim(struct nfs_open_context
*ctx
, struct nfs4_state
*state
)
1832 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
1833 struct nfs4_exception exception
= { };
1836 err
= _nfs4_do_open_reclaim(ctx
, state
);
1837 trace_nfs4_open_reclaim(ctx
, 0, err
);
1838 if (nfs4_clear_cap_atomic_open_v1(server
, err
, &exception
))
1840 if (err
!= -NFS4ERR_DELAY
)
1842 nfs4_handle_exception(server
, err
, &exception
);
1843 } while (exception
.retry
);
1847 static int nfs4_open_reclaim(struct nfs4_state_owner
*sp
, struct nfs4_state
*state
)
1849 struct nfs_open_context
*ctx
;
1852 ctx
= nfs4_state_find_open_context(state
);
1855 ret
= nfs4_do_open_reclaim(ctx
, state
);
1856 put_nfs_open_context(ctx
);
1860 static int nfs4_handle_delegation_recall_error(struct nfs_server
*server
, struct nfs4_state
*state
, const nfs4_stateid
*stateid
, int err
)
1864 printk(KERN_ERR
"NFS: %s: unhandled error "
1865 "%d.\n", __func__
, err
);
1871 case -NFS4ERR_BADSESSION
:
1872 case -NFS4ERR_BADSLOT
:
1873 case -NFS4ERR_BAD_HIGH_SLOT
:
1874 case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION
:
1875 case -NFS4ERR_DEADSESSION
:
1876 set_bit(NFS_DELEGATED_STATE
, &state
->flags
);
1877 nfs4_schedule_session_recovery(server
->nfs_client
->cl_session
, err
);
1879 case -NFS4ERR_STALE_CLIENTID
:
1880 case -NFS4ERR_STALE_STATEID
:
1881 set_bit(NFS_DELEGATED_STATE
, &state
->flags
);
1882 /* Don't recall a delegation if it was lost */
1883 nfs4_schedule_lease_recovery(server
->nfs_client
);
1885 case -NFS4ERR_MOVED
:
1886 nfs4_schedule_migration_recovery(server
);
1888 case -NFS4ERR_LEASE_MOVED
:
1889 nfs4_schedule_lease_moved_recovery(server
->nfs_client
);
1891 case -NFS4ERR_DELEG_REVOKED
:
1892 case -NFS4ERR_ADMIN_REVOKED
:
1893 case -NFS4ERR_EXPIRED
:
1894 case -NFS4ERR_BAD_STATEID
:
1895 case -NFS4ERR_OPENMODE
:
1896 nfs_inode_find_state_and_recover(state
->inode
,
1898 nfs4_schedule_stateid_recovery(server
, state
);
1900 case -NFS4ERR_DELAY
:
1901 case -NFS4ERR_GRACE
:
1902 set_bit(NFS_DELEGATED_STATE
, &state
->flags
);
1906 case -NFS4ERR_DENIED
:
1907 /* kill_proc(fl->fl_pid, SIGLOST, 1); */
1913 int nfs4_open_delegation_recall(struct nfs_open_context
*ctx
,
1914 struct nfs4_state
*state
, const nfs4_stateid
*stateid
,
1917 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
1918 struct nfs4_opendata
*opendata
;
1921 opendata
= nfs4_open_recoverdata_alloc(ctx
, state
,
1922 NFS4_OPEN_CLAIM_DELEG_CUR_FH
);
1923 if (IS_ERR(opendata
))
1924 return PTR_ERR(opendata
);
1925 nfs4_stateid_copy(&opendata
->o_arg
.u
.delegation
, stateid
);
1926 write_seqlock(&state
->seqlock
);
1927 nfs4_stateid_copy(&state
->stateid
, &state
->open_stateid
);
1928 write_sequnlock(&state
->seqlock
);
1929 clear_bit(NFS_DELEGATED_STATE
, &state
->flags
);
1930 switch (type
& (FMODE_READ
|FMODE_WRITE
)) {
1931 case FMODE_READ
|FMODE_WRITE
:
1933 err
= nfs4_open_recover_helper(opendata
, FMODE_READ
|FMODE_WRITE
);
1936 err
= nfs4_open_recover_helper(opendata
, FMODE_WRITE
);
1940 err
= nfs4_open_recover_helper(opendata
, FMODE_READ
);
1942 nfs4_opendata_put(opendata
);
1943 return nfs4_handle_delegation_recall_error(server
, state
, stateid
, err
);
1946 static void nfs4_open_confirm_prepare(struct rpc_task
*task
, void *calldata
)
1948 struct nfs4_opendata
*data
= calldata
;
1950 nfs4_setup_sequence(data
->o_arg
.server
->nfs_client
,
1951 &data
->c_arg
.seq_args
, &data
->c_res
.seq_res
, task
);
1954 static void nfs4_open_confirm_done(struct rpc_task
*task
, void *calldata
)
1956 struct nfs4_opendata
*data
= calldata
;
1958 nfs40_sequence_done(task
, &data
->c_res
.seq_res
);
1960 data
->rpc_status
= task
->tk_status
;
1961 if (data
->rpc_status
== 0) {
1962 nfs4_stateid_copy(&data
->o_res
.stateid
, &data
->c_res
.stateid
);
1963 nfs_confirm_seqid(&data
->owner
->so_seqid
, 0);
1964 renew_lease(data
->o_res
.server
, data
->timestamp
);
1969 static void nfs4_open_confirm_release(void *calldata
)
1971 struct nfs4_opendata
*data
= calldata
;
1972 struct nfs4_state
*state
= NULL
;
1974 /* If this request hasn't been cancelled, do nothing */
1975 if (data
->cancelled
== 0)
1977 /* In case of error, no cleanup! */
1978 if (!data
->rpc_done
)
1980 state
= nfs4_opendata_to_nfs4_state(data
);
1982 nfs4_close_state(state
, data
->o_arg
.fmode
);
1984 nfs4_opendata_put(data
);
1987 static const struct rpc_call_ops nfs4_open_confirm_ops
= {
1988 .rpc_call_prepare
= nfs4_open_confirm_prepare
,
1989 .rpc_call_done
= nfs4_open_confirm_done
,
1990 .rpc_release
= nfs4_open_confirm_release
,
1994 * Note: On error, nfs4_proc_open_confirm will free the struct nfs4_opendata
1996 static int _nfs4_proc_open_confirm(struct nfs4_opendata
*data
)
1998 struct nfs_server
*server
= NFS_SERVER(d_inode(data
->dir
));
1999 struct rpc_task
*task
;
2000 struct rpc_message msg
= {
2001 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_OPEN_CONFIRM
],
2002 .rpc_argp
= &data
->c_arg
,
2003 .rpc_resp
= &data
->c_res
,
2004 .rpc_cred
= data
->owner
->so_cred
,
2006 struct rpc_task_setup task_setup_data
= {
2007 .rpc_client
= server
->client
,
2008 .rpc_message
= &msg
,
2009 .callback_ops
= &nfs4_open_confirm_ops
,
2010 .callback_data
= data
,
2011 .workqueue
= nfsiod_workqueue
,
2012 .flags
= RPC_TASK_ASYNC
,
2016 nfs4_init_sequence(&data
->c_arg
.seq_args
, &data
->c_res
.seq_res
, 1);
2017 kref_get(&data
->kref
);
2019 data
->rpc_status
= 0;
2020 data
->timestamp
= jiffies
;
2021 if (data
->is_recover
)
2022 nfs4_set_sequence_privileged(&data
->c_arg
.seq_args
);
2023 task
= rpc_run_task(&task_setup_data
);
2025 return PTR_ERR(task
);
2026 status
= rpc_wait_for_completion_task(task
);
2028 data
->cancelled
= 1;
2031 status
= data
->rpc_status
;
2036 static void nfs4_open_prepare(struct rpc_task
*task
, void *calldata
)
2038 struct nfs4_opendata
*data
= calldata
;
2039 struct nfs4_state_owner
*sp
= data
->owner
;
2040 struct nfs_client
*clp
= sp
->so_server
->nfs_client
;
2041 enum open_claim_type4 claim
= data
->o_arg
.claim
;
2043 if (nfs_wait_on_sequence(data
->o_arg
.seqid
, task
) != 0)
2046 * Check if we still need to send an OPEN call, or if we can use
2047 * a delegation instead.
2049 if (data
->state
!= NULL
) {
2050 struct nfs_delegation
*delegation
;
2052 if (can_open_cached(data
->state
, data
->o_arg
.fmode
, data
->o_arg
.open_flags
))
2055 delegation
= rcu_dereference(NFS_I(data
->state
->inode
)->delegation
);
2056 if (can_open_delegated(delegation
, data
->o_arg
.fmode
, claim
))
2057 goto unlock_no_action
;
2060 /* Update client id. */
2061 data
->o_arg
.clientid
= clp
->cl_clientid
;
2065 case NFS4_OPEN_CLAIM_PREVIOUS
:
2066 case NFS4_OPEN_CLAIM_DELEG_CUR_FH
:
2067 case NFS4_OPEN_CLAIM_DELEG_PREV_FH
:
2068 data
->o_arg
.open_bitmap
= &nfs4_open_noattr_bitmap
[0];
2069 case NFS4_OPEN_CLAIM_FH
:
2070 task
->tk_msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_OPEN_NOATTR
];
2071 nfs_copy_fh(&data
->o_res
.fh
, data
->o_arg
.fh
);
2073 data
->timestamp
= jiffies
;
2074 if (nfs4_setup_sequence(data
->o_arg
.server
->nfs_client
,
2075 &data
->o_arg
.seq_args
,
2076 &data
->o_res
.seq_res
,
2078 nfs_release_seqid(data
->o_arg
.seqid
);
2080 /* Set the create mode (note dependency on the session type) */
2081 data
->o_arg
.createmode
= NFS4_CREATE_UNCHECKED
;
2082 if (data
->o_arg
.open_flags
& O_EXCL
) {
2083 data
->o_arg
.createmode
= NFS4_CREATE_EXCLUSIVE
;
2084 if (nfs4_has_persistent_session(clp
))
2085 data
->o_arg
.createmode
= NFS4_CREATE_GUARDED
;
2086 else if (clp
->cl_mvops
->minor_version
> 0)
2087 data
->o_arg
.createmode
= NFS4_CREATE_EXCLUSIVE4_1
;
2091 trace_nfs4_cached_open(data
->state
);
2094 task
->tk_action
= NULL
;
2096 nfs4_sequence_done(task
, &data
->o_res
.seq_res
);
2099 static void nfs4_open_done(struct rpc_task
*task
, void *calldata
)
2101 struct nfs4_opendata
*data
= calldata
;
2103 data
->rpc_status
= task
->tk_status
;
2105 if (!nfs4_sequence_process(task
, &data
->o_res
.seq_res
))
2108 if (task
->tk_status
== 0) {
2109 if (data
->o_res
.f_attr
->valid
& NFS_ATTR_FATTR_TYPE
) {
2110 switch (data
->o_res
.f_attr
->mode
& S_IFMT
) {
2114 data
->rpc_status
= -ELOOP
;
2117 data
->rpc_status
= -EISDIR
;
2120 data
->rpc_status
= -ENOTDIR
;
2123 renew_lease(data
->o_res
.server
, data
->timestamp
);
2124 if (!(data
->o_res
.rflags
& NFS4_OPEN_RESULT_CONFIRM
))
2125 nfs_confirm_seqid(&data
->owner
->so_seqid
, 0);
2130 static void nfs4_open_release(void *calldata
)
2132 struct nfs4_opendata
*data
= calldata
;
2133 struct nfs4_state
*state
= NULL
;
2135 /* If this request hasn't been cancelled, do nothing */
2136 if (data
->cancelled
== 0)
2138 /* In case of error, no cleanup! */
2139 if (data
->rpc_status
!= 0 || !data
->rpc_done
)
2141 /* In case we need an open_confirm, no cleanup! */
2142 if (data
->o_res
.rflags
& NFS4_OPEN_RESULT_CONFIRM
)
2144 state
= nfs4_opendata_to_nfs4_state(data
);
2146 nfs4_close_state(state
, data
->o_arg
.fmode
);
2148 nfs4_opendata_put(data
);
2151 static const struct rpc_call_ops nfs4_open_ops
= {
2152 .rpc_call_prepare
= nfs4_open_prepare
,
2153 .rpc_call_done
= nfs4_open_done
,
2154 .rpc_release
= nfs4_open_release
,
2157 static int nfs4_run_open_task(struct nfs4_opendata
*data
, int isrecover
)
2159 struct inode
*dir
= d_inode(data
->dir
);
2160 struct nfs_server
*server
= NFS_SERVER(dir
);
2161 struct nfs_openargs
*o_arg
= &data
->o_arg
;
2162 struct nfs_openres
*o_res
= &data
->o_res
;
2163 struct rpc_task
*task
;
2164 struct rpc_message msg
= {
2165 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_OPEN
],
2168 .rpc_cred
= data
->owner
->so_cred
,
2170 struct rpc_task_setup task_setup_data
= {
2171 .rpc_client
= server
->client
,
2172 .rpc_message
= &msg
,
2173 .callback_ops
= &nfs4_open_ops
,
2174 .callback_data
= data
,
2175 .workqueue
= nfsiod_workqueue
,
2176 .flags
= RPC_TASK_ASYNC
,
2180 nfs4_init_sequence(&o_arg
->seq_args
, &o_res
->seq_res
, 1);
2181 kref_get(&data
->kref
);
2183 data
->rpc_status
= 0;
2184 data
->cancelled
= 0;
2185 data
->is_recover
= 0;
2187 nfs4_set_sequence_privileged(&o_arg
->seq_args
);
2188 data
->is_recover
= 1;
2190 task
= rpc_run_task(&task_setup_data
);
2192 return PTR_ERR(task
);
2193 status
= rpc_wait_for_completion_task(task
);
2195 data
->cancelled
= 1;
2198 status
= data
->rpc_status
;
2204 static int _nfs4_recover_proc_open(struct nfs4_opendata
*data
)
2206 struct inode
*dir
= d_inode(data
->dir
);
2207 struct nfs_openres
*o_res
= &data
->o_res
;
2210 status
= nfs4_run_open_task(data
, 1);
2211 if (status
!= 0 || !data
->rpc_done
)
2214 nfs_fattr_map_and_free_names(NFS_SERVER(dir
), &data
->f_attr
);
2216 if (o_res
->rflags
& NFS4_OPEN_RESULT_CONFIRM
)
2217 status
= _nfs4_proc_open_confirm(data
);
2223 * Additional permission checks in order to distinguish between an
2224 * open for read, and an open for execute. This works around the
2225 * fact that NFSv4 OPEN treats read and execute permissions as being
2227 * Note that in the non-execute case, we want to turn off permission
2228 * checking if we just created a new file (POSIX open() semantics).
2230 static int nfs4_opendata_access(struct rpc_cred
*cred
,
2231 struct nfs4_opendata
*opendata
,
2232 struct nfs4_state
*state
, fmode_t fmode
,
2235 struct nfs_access_entry cache
;
2238 /* access call failed or for some reason the server doesn't
2239 * support any access modes -- defer access call until later */
2240 if (opendata
->o_res
.access_supported
== 0)
2245 * Use openflags to check for exec, because fmode won't
2246 * always have FMODE_EXEC set when file open for exec.
2248 if (openflags
& __FMODE_EXEC
) {
2249 /* ONLY check for exec rights */
2251 } else if ((fmode
& FMODE_READ
) && !opendata
->file_created
)
2255 cache
.jiffies
= jiffies
;
2256 nfs_access_set_mask(&cache
, opendata
->o_res
.access_result
);
2257 nfs_access_add_cache(state
->inode
, &cache
);
2259 if ((mask
& ~cache
.mask
& (MAY_READ
| MAY_EXEC
)) == 0)
2266 * Note: On error, nfs4_proc_open will free the struct nfs4_opendata
2268 static int _nfs4_proc_open(struct nfs4_opendata
*data
)
2270 struct inode
*dir
= d_inode(data
->dir
);
2271 struct nfs_server
*server
= NFS_SERVER(dir
);
2272 struct nfs_openargs
*o_arg
= &data
->o_arg
;
2273 struct nfs_openres
*o_res
= &data
->o_res
;
2276 status
= nfs4_run_open_task(data
, 0);
2277 if (!data
->rpc_done
)
2280 if (status
== -NFS4ERR_BADNAME
&&
2281 !(o_arg
->open_flags
& O_CREAT
))
2286 nfs_fattr_map_and_free_names(server
, &data
->f_attr
);
2288 if (o_arg
->open_flags
& O_CREAT
) {
2289 if (o_arg
->open_flags
& O_EXCL
)
2290 data
->file_created
= 1;
2291 else if (o_res
->cinfo
.before
!= o_res
->cinfo
.after
)
2292 data
->file_created
= 1;
2293 if (data
->file_created
|| dir
->i_version
!= o_res
->cinfo
.after
)
2294 update_changeattr(dir
, &o_res
->cinfo
,
2295 o_res
->f_attr
->time_start
);
2297 if ((o_res
->rflags
& NFS4_OPEN_RESULT_LOCKTYPE_POSIX
) == 0)
2298 server
->caps
&= ~NFS_CAP_POSIX_LOCK
;
2299 if(o_res
->rflags
& NFS4_OPEN_RESULT_CONFIRM
) {
2300 status
= _nfs4_proc_open_confirm(data
);
2304 if (!(o_res
->f_attr
->valid
& NFS_ATTR_FATTR
)) {
2305 nfs4_sequence_free_slot(&o_res
->seq_res
);
2306 nfs4_proc_getattr(server
, &o_res
->fh
, o_res
->f_attr
, o_res
->f_label
);
2313 * reclaim state on the server after a network partition.
2314 * Assumes caller holds the appropriate lock
2316 static int _nfs4_open_expired(struct nfs_open_context
*ctx
, struct nfs4_state
*state
)
2318 struct nfs4_opendata
*opendata
;
2321 opendata
= nfs4_open_recoverdata_alloc(ctx
, state
,
2322 NFS4_OPEN_CLAIM_FH
);
2323 if (IS_ERR(opendata
))
2324 return PTR_ERR(opendata
);
2325 ret
= nfs4_open_recover(opendata
, state
);
2327 d_drop(ctx
->dentry
);
2328 nfs4_opendata_put(opendata
);
2332 static int nfs4_do_open_expired(struct nfs_open_context
*ctx
, struct nfs4_state
*state
)
2334 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
2335 struct nfs4_exception exception
= { };
2339 err
= _nfs4_open_expired(ctx
, state
);
2340 trace_nfs4_open_expired(ctx
, 0, err
);
2341 if (nfs4_clear_cap_atomic_open_v1(server
, err
, &exception
))
2346 case -NFS4ERR_GRACE
:
2347 case -NFS4ERR_DELAY
:
2348 nfs4_handle_exception(server
, err
, &exception
);
2351 } while (exception
.retry
);
2356 static int nfs4_open_expired(struct nfs4_state_owner
*sp
, struct nfs4_state
*state
)
2358 struct nfs_open_context
*ctx
;
2361 ctx
= nfs4_state_find_open_context(state
);
2364 ret
= nfs4_do_open_expired(ctx
, state
);
2365 put_nfs_open_context(ctx
);
2369 static void nfs_finish_clear_delegation_stateid(struct nfs4_state
*state
,
2370 const nfs4_stateid
*stateid
)
2372 nfs_remove_bad_delegation(state
->inode
, stateid
);
2373 write_seqlock(&state
->seqlock
);
2374 nfs4_stateid_copy(&state
->stateid
, &state
->open_stateid
);
2375 write_sequnlock(&state
->seqlock
);
2376 clear_bit(NFS_DELEGATED_STATE
, &state
->flags
);
2379 static void nfs40_clear_delegation_stateid(struct nfs4_state
*state
)
2381 if (rcu_access_pointer(NFS_I(state
->inode
)->delegation
) != NULL
)
2382 nfs_finish_clear_delegation_stateid(state
, NULL
);
2385 static int nfs40_open_expired(struct nfs4_state_owner
*sp
, struct nfs4_state
*state
)
2387 /* NFSv4.0 doesn't allow for delegation recovery on open expire */
2388 nfs40_clear_delegation_stateid(state
);
2389 return nfs4_open_expired(sp
, state
);
2392 static int nfs40_test_and_free_expired_stateid(struct nfs_server
*server
,
2393 nfs4_stateid
*stateid
,
2394 struct rpc_cred
*cred
)
2396 return -NFS4ERR_BAD_STATEID
;
2399 #if defined(CONFIG_NFS_V4_1)
2400 static int nfs41_test_and_free_expired_stateid(struct nfs_server
*server
,
2401 nfs4_stateid
*stateid
,
2402 struct rpc_cred
*cred
)
2406 switch (stateid
->type
) {
2409 case NFS4_INVALID_STATEID_TYPE
:
2410 case NFS4_SPECIAL_STATEID_TYPE
:
2411 return -NFS4ERR_BAD_STATEID
;
2412 case NFS4_REVOKED_STATEID_TYPE
:
2416 status
= nfs41_test_stateid(server
, stateid
, cred
);
2418 case -NFS4ERR_EXPIRED
:
2419 case -NFS4ERR_ADMIN_REVOKED
:
2420 case -NFS4ERR_DELEG_REVOKED
:
2426 /* Ack the revoked state to the server */
2427 nfs41_free_stateid(server
, stateid
, cred
, true);
2428 return -NFS4ERR_EXPIRED
;
2431 static void nfs41_check_delegation_stateid(struct nfs4_state
*state
)
2433 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
2434 nfs4_stateid stateid
;
2435 struct nfs_delegation
*delegation
;
2436 struct rpc_cred
*cred
;
2439 /* Get the delegation credential for use by test/free_stateid */
2441 delegation
= rcu_dereference(NFS_I(state
->inode
)->delegation
);
2442 if (delegation
== NULL
) {
2447 nfs4_stateid_copy(&stateid
, &delegation
->stateid
);
2448 if (test_bit(NFS_DELEGATION_REVOKED
, &delegation
->flags
) ||
2449 !test_and_clear_bit(NFS_DELEGATION_TEST_EXPIRED
,
2450 &delegation
->flags
)) {
2452 nfs_finish_clear_delegation_stateid(state
, &stateid
);
2456 cred
= get_rpccred(delegation
->cred
);
2458 status
= nfs41_test_and_free_expired_stateid(server
, &stateid
, cred
);
2459 trace_nfs4_test_delegation_stateid(state
, NULL
, status
);
2460 if (status
== -NFS4ERR_EXPIRED
|| status
== -NFS4ERR_BAD_STATEID
)
2461 nfs_finish_clear_delegation_stateid(state
, &stateid
);
2467 * nfs41_check_expired_locks - possibly free a lock stateid
2469 * @state: NFSv4 state for an inode
2471 * Returns NFS_OK if recovery for this stateid is now finished.
2472 * Otherwise a negative NFS4ERR value is returned.
2474 static int nfs41_check_expired_locks(struct nfs4_state
*state
)
2476 int status
, ret
= NFS_OK
;
2477 struct nfs4_lock_state
*lsp
, *prev
= NULL
;
2478 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
2480 if (!test_bit(LK_STATE_IN_USE
, &state
->flags
))
2483 spin_lock(&state
->state_lock
);
2484 list_for_each_entry(lsp
, &state
->lock_states
, ls_locks
) {
2485 if (test_bit(NFS_LOCK_INITIALIZED
, &lsp
->ls_flags
)) {
2486 struct rpc_cred
*cred
= lsp
->ls_state
->owner
->so_cred
;
2488 atomic_inc(&lsp
->ls_count
);
2489 spin_unlock(&state
->state_lock
);
2491 nfs4_put_lock_state(prev
);
2494 status
= nfs41_test_and_free_expired_stateid(server
,
2497 trace_nfs4_test_lock_stateid(state
, lsp
, status
);
2498 if (status
== -NFS4ERR_EXPIRED
||
2499 status
== -NFS4ERR_BAD_STATEID
) {
2500 clear_bit(NFS_LOCK_INITIALIZED
, &lsp
->ls_flags
);
2501 lsp
->ls_stateid
.type
= NFS4_INVALID_STATEID_TYPE
;
2502 if (!recover_lost_locks
)
2503 set_bit(NFS_LOCK_LOST
, &lsp
->ls_flags
);
2504 } else if (status
!= NFS_OK
) {
2506 nfs4_put_lock_state(prev
);
2509 spin_lock(&state
->state_lock
);
2512 spin_unlock(&state
->state_lock
);
2513 nfs4_put_lock_state(prev
);
2519 * nfs41_check_open_stateid - possibly free an open stateid
2521 * @state: NFSv4 state for an inode
2523 * Returns NFS_OK if recovery for this stateid is now finished.
2524 * Otherwise a negative NFS4ERR value is returned.
2526 static int nfs41_check_open_stateid(struct nfs4_state
*state
)
2528 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
2529 nfs4_stateid
*stateid
= &state
->open_stateid
;
2530 struct rpc_cred
*cred
= state
->owner
->so_cred
;
2533 if (test_bit(NFS_OPEN_STATE
, &state
->flags
) == 0) {
2534 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) == 0) {
2535 if (nfs4_have_delegation(state
->inode
, state
->state
))
2537 return -NFS4ERR_OPENMODE
;
2539 return -NFS4ERR_BAD_STATEID
;
2541 status
= nfs41_test_and_free_expired_stateid(server
, stateid
, cred
);
2542 trace_nfs4_test_open_stateid(state
, NULL
, status
);
2543 if (status
== -NFS4ERR_EXPIRED
|| status
== -NFS4ERR_BAD_STATEID
) {
2544 clear_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
2545 clear_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
2546 clear_bit(NFS_O_RDWR_STATE
, &state
->flags
);
2547 clear_bit(NFS_OPEN_STATE
, &state
->flags
);
2548 stateid
->type
= NFS4_INVALID_STATEID_TYPE
;
2550 if (status
!= NFS_OK
)
2552 if (nfs_open_stateid_recover_openmode(state
))
2553 return -NFS4ERR_OPENMODE
;
2557 static int nfs41_open_expired(struct nfs4_state_owner
*sp
, struct nfs4_state
*state
)
2561 nfs41_check_delegation_stateid(state
);
2562 status
= nfs41_check_expired_locks(state
);
2563 if (status
!= NFS_OK
)
2565 status
= nfs41_check_open_stateid(state
);
2566 if (status
!= NFS_OK
)
2567 status
= nfs4_open_expired(sp
, state
);
2573 * on an EXCLUSIVE create, the server should send back a bitmask with FATTR4-*
2574 * fields corresponding to attributes that were used to store the verifier.
2575 * Make sure we clobber those fields in the later setattr call
2577 static inline void nfs4_exclusive_attrset(struct nfs4_opendata
*opendata
,
2578 struct iattr
*sattr
, struct nfs4_label
**label
)
2580 const u32
*attrset
= opendata
->o_res
.attrset
;
2582 if ((attrset
[1] & FATTR4_WORD1_TIME_ACCESS
) &&
2583 !(sattr
->ia_valid
& ATTR_ATIME_SET
))
2584 sattr
->ia_valid
|= ATTR_ATIME
;
2586 if ((attrset
[1] & FATTR4_WORD1_TIME_MODIFY
) &&
2587 !(sattr
->ia_valid
& ATTR_MTIME_SET
))
2588 sattr
->ia_valid
|= ATTR_MTIME
;
2590 /* Except MODE, it seems harmless of setting twice. */
2591 if (opendata
->o_arg
.createmode
!= NFS4_CREATE_EXCLUSIVE
&&
2592 attrset
[1] & FATTR4_WORD1_MODE
)
2593 sattr
->ia_valid
&= ~ATTR_MODE
;
2595 if (attrset
[2] & FATTR4_WORD2_SECURITY_LABEL
)
2599 static int _nfs4_open_and_get_state(struct nfs4_opendata
*opendata
,
2602 struct nfs_open_context
*ctx
)
2604 struct nfs4_state_owner
*sp
= opendata
->owner
;
2605 struct nfs_server
*server
= sp
->so_server
;
2606 struct dentry
*dentry
;
2607 struct nfs4_state
*state
;
2611 seq
= raw_seqcount_begin(&sp
->so_reclaim_seqcount
);
2613 ret
= _nfs4_proc_open(opendata
);
2617 state
= nfs4_opendata_to_nfs4_state(opendata
);
2618 ret
= PTR_ERR(state
);
2622 if (server
->caps
& NFS_CAP_POSIX_LOCK
)
2623 set_bit(NFS_STATE_POSIX_LOCKS
, &state
->flags
);
2624 if (opendata
->o_res
.rflags
& NFS4_OPEN_RESULT_MAY_NOTIFY_LOCK
)
2625 set_bit(NFS_STATE_MAY_NOTIFY_LOCK
, &state
->flags
);
2627 dentry
= opendata
->dentry
;
2628 if (d_really_is_negative(dentry
)) {
2629 struct dentry
*alias
;
2631 alias
= d_exact_alias(dentry
, state
->inode
);
2633 alias
= d_splice_alias(igrab(state
->inode
), dentry
);
2634 /* d_splice_alias() can't fail here - it's a non-directory */
2637 ctx
->dentry
= dentry
= alias
;
2639 nfs_set_verifier(dentry
,
2640 nfs_save_change_attribute(d_inode(opendata
->dir
)));
2643 ret
= nfs4_opendata_access(sp
->so_cred
, opendata
, state
, fmode
, flags
);
2647 if (d_inode(dentry
) == state
->inode
) {
2648 nfs_inode_attach_open_context(ctx
);
2649 if (read_seqcount_retry(&sp
->so_reclaim_seqcount
, seq
))
2650 nfs4_schedule_stateid_recovery(server
, state
);
2657 * Returns a referenced nfs4_state
2659 static int _nfs4_do_open(struct inode
*dir
,
2660 struct nfs_open_context
*ctx
,
2662 struct iattr
*sattr
,
2663 struct nfs4_label
*label
,
2666 struct nfs4_state_owner
*sp
;
2667 struct nfs4_state
*state
= NULL
;
2668 struct nfs_server
*server
= NFS_SERVER(dir
);
2669 struct nfs4_opendata
*opendata
;
2670 struct dentry
*dentry
= ctx
->dentry
;
2671 struct rpc_cred
*cred
= ctx
->cred
;
2672 struct nfs4_threshold
**ctx_th
= &ctx
->mdsthreshold
;
2673 fmode_t fmode
= ctx
->mode
& (FMODE_READ
|FMODE_WRITE
|FMODE_EXEC
);
2674 enum open_claim_type4 claim
= NFS4_OPEN_CLAIM_NULL
;
2675 struct nfs4_label
*olabel
= NULL
;
2678 /* Protect against reboot recovery conflicts */
2680 sp
= nfs4_get_state_owner(server
, cred
, GFP_KERNEL
);
2682 dprintk("nfs4_do_open: nfs4_get_state_owner failed!\n");
2685 status
= nfs4_client_recover_expired_lease(server
->nfs_client
);
2687 goto err_put_state_owner
;
2688 if (d_really_is_positive(dentry
))
2689 nfs4_return_incompatible_delegation(d_inode(dentry
), fmode
);
2691 if (d_really_is_positive(dentry
))
2692 claim
= NFS4_OPEN_CLAIM_FH
;
2693 opendata
= nfs4_opendata_alloc(dentry
, sp
, fmode
, flags
, sattr
,
2694 label
, claim
, GFP_KERNEL
);
2695 if (opendata
== NULL
)
2696 goto err_put_state_owner
;
2699 olabel
= nfs4_label_alloc(server
, GFP_KERNEL
);
2700 if (IS_ERR(olabel
)) {
2701 status
= PTR_ERR(olabel
);
2702 goto err_opendata_put
;
2706 if (server
->attr_bitmask
[2] & FATTR4_WORD2_MDSTHRESHOLD
) {
2707 if (!opendata
->f_attr
.mdsthreshold
) {
2708 opendata
->f_attr
.mdsthreshold
= pnfs_mdsthreshold_alloc();
2709 if (!opendata
->f_attr
.mdsthreshold
)
2710 goto err_free_label
;
2712 opendata
->o_arg
.open_bitmap
= &nfs4_pnfs_open_bitmap
[0];
2714 if (d_really_is_positive(dentry
))
2715 opendata
->state
= nfs4_get_open_state(d_inode(dentry
), sp
);
2717 status
= _nfs4_open_and_get_state(opendata
, fmode
, flags
, ctx
);
2719 goto err_free_label
;
2722 if ((opendata
->o_arg
.open_flags
& (O_CREAT
|O_EXCL
)) == (O_CREAT
|O_EXCL
) &&
2723 (opendata
->o_arg
.createmode
!= NFS4_CREATE_GUARDED
)) {
2724 nfs4_exclusive_attrset(opendata
, sattr
, &label
);
2726 * send create attributes which was not set by open
2727 * with an extra setattr.
2729 if (sattr
->ia_valid
& NFS4_VALID_ATTRS
) {
2730 nfs_fattr_init(opendata
->o_res
.f_attr
);
2731 status
= nfs4_do_setattr(state
->inode
, cred
,
2732 opendata
->o_res
.f_attr
, sattr
,
2733 ctx
, label
, olabel
);
2735 nfs_setattr_update_inode(state
->inode
, sattr
,
2736 opendata
->o_res
.f_attr
);
2737 nfs_setsecurity(state
->inode
, opendata
->o_res
.f_attr
, olabel
);
2741 if (opened
&& opendata
->file_created
)
2742 *opened
|= FILE_CREATED
;
2744 if (pnfs_use_threshold(ctx_th
, opendata
->f_attr
.mdsthreshold
, server
)) {
2745 *ctx_th
= opendata
->f_attr
.mdsthreshold
;
2746 opendata
->f_attr
.mdsthreshold
= NULL
;
2749 nfs4_label_free(olabel
);
2751 nfs4_opendata_put(opendata
);
2752 nfs4_put_state_owner(sp
);
2755 nfs4_label_free(olabel
);
2757 nfs4_opendata_put(opendata
);
2758 err_put_state_owner
:
2759 nfs4_put_state_owner(sp
);
2765 static struct nfs4_state
*nfs4_do_open(struct inode
*dir
,
2766 struct nfs_open_context
*ctx
,
2768 struct iattr
*sattr
,
2769 struct nfs4_label
*label
,
2772 struct nfs_server
*server
= NFS_SERVER(dir
);
2773 struct nfs4_exception exception
= { };
2774 struct nfs4_state
*res
;
2778 status
= _nfs4_do_open(dir
, ctx
, flags
, sattr
, label
, opened
);
2780 trace_nfs4_open_file(ctx
, flags
, status
);
2783 /* NOTE: BAD_SEQID means the server and client disagree about the
2784 * book-keeping w.r.t. state-changing operations
2785 * (OPEN/CLOSE/LOCK/LOCKU...)
2786 * It is actually a sign of a bug on the client or on the server.
2788 * If we receive a BAD_SEQID error in the particular case of
2789 * doing an OPEN, we assume that nfs_increment_open_seqid() will
2790 * have unhashed the old state_owner for us, and that we can
2791 * therefore safely retry using a new one. We should still warn
2792 * the user though...
2794 if (status
== -NFS4ERR_BAD_SEQID
) {
2795 pr_warn_ratelimited("NFS: v4 server %s "
2796 " returned a bad sequence-id error!\n",
2797 NFS_SERVER(dir
)->nfs_client
->cl_hostname
);
2798 exception
.retry
= 1;
2802 * BAD_STATEID on OPEN means that the server cancelled our
2803 * state before it received the OPEN_CONFIRM.
2804 * Recover by retrying the request as per the discussion
2805 * on Page 181 of RFC3530.
2807 if (status
== -NFS4ERR_BAD_STATEID
) {
2808 exception
.retry
= 1;
2811 if (status
== -EAGAIN
) {
2812 /* We must have found a delegation */
2813 exception
.retry
= 1;
2816 if (nfs4_clear_cap_atomic_open_v1(server
, status
, &exception
))
2818 res
= ERR_PTR(nfs4_handle_exception(server
,
2819 status
, &exception
));
2820 } while (exception
.retry
);
2824 static int _nfs4_do_setattr(struct inode
*inode
,
2825 struct nfs_setattrargs
*arg
,
2826 struct nfs_setattrres
*res
,
2827 struct rpc_cred
*cred
,
2828 struct nfs_open_context
*ctx
)
2830 struct nfs_server
*server
= NFS_SERVER(inode
);
2831 struct rpc_message msg
= {
2832 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETATTR
],
2837 struct rpc_cred
*delegation_cred
= NULL
;
2838 unsigned long timestamp
= jiffies
;
2843 nfs_fattr_init(res
->fattr
);
2845 /* Servers should only apply open mode checks for file size changes */
2846 truncate
= (arg
->iap
->ia_valid
& ATTR_SIZE
) ? true : false;
2847 fmode
= truncate
? FMODE_WRITE
: FMODE_READ
;
2849 if (nfs4_copy_delegation_stateid(inode
, fmode
, &arg
->stateid
, &delegation_cred
)) {
2850 /* Use that stateid */
2851 } else if (truncate
&& ctx
!= NULL
) {
2852 struct nfs_lock_context
*l_ctx
;
2853 if (!nfs4_valid_open_stateid(ctx
->state
))
2855 l_ctx
= nfs_get_lock_context(ctx
);
2857 return PTR_ERR(l_ctx
);
2858 status
= nfs4_select_rw_stateid(ctx
->state
, FMODE_WRITE
, l_ctx
,
2859 &arg
->stateid
, &delegation_cred
);
2860 nfs_put_lock_context(l_ctx
);
2864 nfs4_stateid_copy(&arg
->stateid
, &zero_stateid
);
2865 if (delegation_cred
)
2866 msg
.rpc_cred
= delegation_cred
;
2868 status
= nfs4_call_sync(server
->client
, server
, &msg
, &arg
->seq_args
, &res
->seq_res
, 1);
2870 put_rpccred(delegation_cred
);
2871 if (status
== 0 && ctx
!= NULL
)
2872 renew_lease(server
, timestamp
);
2873 trace_nfs4_setattr(inode
, &arg
->stateid
, status
);
2877 static int nfs4_do_setattr(struct inode
*inode
, struct rpc_cred
*cred
,
2878 struct nfs_fattr
*fattr
, struct iattr
*sattr
,
2879 struct nfs_open_context
*ctx
, struct nfs4_label
*ilabel
,
2880 struct nfs4_label
*olabel
)
2882 struct nfs_server
*server
= NFS_SERVER(inode
);
2883 struct nfs4_state
*state
= ctx
? ctx
->state
: NULL
;
2884 struct nfs_setattrargs arg
= {
2885 .fh
= NFS_FH(inode
),
2888 .bitmask
= server
->attr_bitmask
,
2891 struct nfs_setattrres res
= {
2896 struct nfs4_exception exception
= {
2899 .stateid
= &arg
.stateid
,
2903 arg
.bitmask
= nfs4_bitmask(server
, ilabel
);
2905 arg
.bitmask
= nfs4_bitmask(server
, olabel
);
2908 err
= _nfs4_do_setattr(inode
, &arg
, &res
, cred
, ctx
);
2910 case -NFS4ERR_OPENMODE
:
2911 if (!(sattr
->ia_valid
& ATTR_SIZE
)) {
2912 pr_warn_once("NFSv4: server %s is incorrectly "
2913 "applying open mode checks to "
2914 "a SETATTR that is not "
2915 "changing file size.\n",
2916 server
->nfs_client
->cl_hostname
);
2918 if (state
&& !(state
->state
& FMODE_WRITE
)) {
2920 if (sattr
->ia_valid
& ATTR_OPEN
)
2925 err
= nfs4_handle_exception(server
, err
, &exception
);
2926 } while (exception
.retry
);
2932 nfs4_wait_on_layoutreturn(struct inode
*inode
, struct rpc_task
*task
)
2934 if (inode
== NULL
|| !nfs_have_layout(inode
))
2937 return pnfs_wait_on_layoutreturn(inode
, task
);
2940 struct nfs4_closedata
{
2941 struct inode
*inode
;
2942 struct nfs4_state
*state
;
2943 struct nfs_closeargs arg
;
2944 struct nfs_closeres res
;
2946 struct nfs4_layoutreturn_args arg
;
2947 struct nfs4_layoutreturn_res res
;
2948 struct nfs4_xdr_opaque_data ld_private
;
2952 struct nfs_fattr fattr
;
2953 unsigned long timestamp
;
2956 static void nfs4_free_closedata(void *data
)
2958 struct nfs4_closedata
*calldata
= data
;
2959 struct nfs4_state_owner
*sp
= calldata
->state
->owner
;
2960 struct super_block
*sb
= calldata
->state
->inode
->i_sb
;
2962 if (calldata
->lr
.roc
)
2963 pnfs_roc_release(&calldata
->lr
.arg
, &calldata
->lr
.res
,
2964 calldata
->res
.lr_ret
);
2965 nfs4_put_open_state(calldata
->state
);
2966 nfs_free_seqid(calldata
->arg
.seqid
);
2967 nfs4_put_state_owner(sp
);
2968 nfs_sb_deactive(sb
);
2972 static void nfs4_close_done(struct rpc_task
*task
, void *data
)
2974 struct nfs4_closedata
*calldata
= data
;
2975 struct nfs4_state
*state
= calldata
->state
;
2976 struct nfs_server
*server
= NFS_SERVER(calldata
->inode
);
2977 nfs4_stateid
*res_stateid
= NULL
;
2979 dprintk("%s: begin!\n", __func__
);
2980 if (!nfs4_sequence_done(task
, &calldata
->res
.seq_res
))
2982 trace_nfs4_close(state
, &calldata
->arg
, &calldata
->res
, task
->tk_status
);
2984 /* Handle Layoutreturn errors */
2985 if (calldata
->arg
.lr_args
&& task
->tk_status
!= 0) {
2986 switch (calldata
->res
.lr_ret
) {
2988 calldata
->res
.lr_ret
= -NFS4ERR_NOMATCHING_LAYOUT
;
2991 calldata
->arg
.lr_args
= NULL
;
2992 calldata
->res
.lr_res
= NULL
;
2994 case -NFS4ERR_ADMIN_REVOKED
:
2995 case -NFS4ERR_DELEG_REVOKED
:
2996 case -NFS4ERR_EXPIRED
:
2997 case -NFS4ERR_BAD_STATEID
:
2998 case -NFS4ERR_OLD_STATEID
:
2999 case -NFS4ERR_UNKNOWN_LAYOUTTYPE
:
3000 case -NFS4ERR_WRONG_CRED
:
3001 calldata
->arg
.lr_args
= NULL
;
3002 calldata
->res
.lr_res
= NULL
;
3003 calldata
->res
.lr_ret
= 0;
3004 rpc_restart_call_prepare(task
);
3009 /* hmm. we are done with the inode, and in the process of freeing
3010 * the state_owner. we keep this around to process errors
3012 switch (task
->tk_status
) {
3014 res_stateid
= &calldata
->res
.stateid
;
3015 renew_lease(server
, calldata
->timestamp
);
3017 case -NFS4ERR_ACCESS
:
3018 if (calldata
->arg
.bitmask
!= NULL
) {
3019 calldata
->arg
.bitmask
= NULL
;
3020 calldata
->res
.fattr
= NULL
;
3021 task
->tk_status
= 0;
3022 rpc_restart_call_prepare(task
);
3027 case -NFS4ERR_ADMIN_REVOKED
:
3028 case -NFS4ERR_STALE_STATEID
:
3029 case -NFS4ERR_EXPIRED
:
3030 nfs4_free_revoked_stateid(server
,
3031 &calldata
->arg
.stateid
,
3032 task
->tk_msg
.rpc_cred
);
3033 case -NFS4ERR_OLD_STATEID
:
3034 case -NFS4ERR_BAD_STATEID
:
3035 if (!nfs4_stateid_match(&calldata
->arg
.stateid
,
3036 &state
->open_stateid
)) {
3037 rpc_restart_call_prepare(task
);
3040 if (calldata
->arg
.fmode
== 0)
3043 if (nfs4_async_handle_error(task
, server
, state
, NULL
) == -EAGAIN
) {
3044 rpc_restart_call_prepare(task
);
3048 nfs_clear_open_stateid(state
, &calldata
->arg
.stateid
,
3049 res_stateid
, calldata
->arg
.fmode
);
3051 nfs_release_seqid(calldata
->arg
.seqid
);
3052 nfs_refresh_inode(calldata
->inode
, &calldata
->fattr
);
3053 dprintk("%s: done, ret = %d!\n", __func__
, task
->tk_status
);
3056 static void nfs4_close_prepare(struct rpc_task
*task
, void *data
)
3058 struct nfs4_closedata
*calldata
= data
;
3059 struct nfs4_state
*state
= calldata
->state
;
3060 struct inode
*inode
= calldata
->inode
;
3061 bool is_rdonly
, is_wronly
, is_rdwr
;
3064 dprintk("%s: begin!\n", __func__
);
3065 if (nfs_wait_on_sequence(calldata
->arg
.seqid
, task
) != 0)
3068 task
->tk_msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_OPEN_DOWNGRADE
];
3069 spin_lock(&state
->owner
->so_lock
);
3070 is_rdwr
= test_bit(NFS_O_RDWR_STATE
, &state
->flags
);
3071 is_rdonly
= test_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
3072 is_wronly
= test_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
3073 nfs4_stateid_copy(&calldata
->arg
.stateid
, &state
->open_stateid
);
3074 /* Calculate the change in open mode */
3075 calldata
->arg
.fmode
= 0;
3076 if (state
->n_rdwr
== 0) {
3077 if (state
->n_rdonly
== 0)
3078 call_close
|= is_rdonly
;
3080 calldata
->arg
.fmode
|= FMODE_READ
;
3081 if (state
->n_wronly
== 0)
3082 call_close
|= is_wronly
;
3084 calldata
->arg
.fmode
|= FMODE_WRITE
;
3085 if (calldata
->arg
.fmode
!= (FMODE_READ
|FMODE_WRITE
))
3086 call_close
|= is_rdwr
;
3088 calldata
->arg
.fmode
|= FMODE_READ
|FMODE_WRITE
;
3090 if (!nfs4_valid_open_stateid(state
) ||
3091 test_bit(NFS_OPEN_STATE
, &state
->flags
) == 0)
3093 spin_unlock(&state
->owner
->so_lock
);
3096 /* Note: exit _without_ calling nfs4_close_done */
3100 if (!calldata
->lr
.roc
&& nfs4_wait_on_layoutreturn(inode
, task
)) {
3101 nfs_release_seqid(calldata
->arg
.seqid
);
3105 if (calldata
->arg
.fmode
== 0)
3106 task
->tk_msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_CLOSE
];
3108 if (calldata
->arg
.fmode
== 0 || calldata
->arg
.fmode
== FMODE_READ
) {
3109 /* Close-to-open cache consistency revalidation */
3110 if (!nfs4_have_delegation(inode
, FMODE_READ
))
3111 calldata
->arg
.bitmask
= NFS_SERVER(inode
)->cache_consistency_bitmask
;
3113 calldata
->arg
.bitmask
= NULL
;
3116 calldata
->arg
.share_access
=
3117 nfs4_map_atomic_open_share(NFS_SERVER(inode
),
3118 calldata
->arg
.fmode
, 0);
3120 if (calldata
->res
.fattr
== NULL
)
3121 calldata
->arg
.bitmask
= NULL
;
3122 else if (calldata
->arg
.bitmask
== NULL
)
3123 calldata
->res
.fattr
= NULL
;
3124 calldata
->timestamp
= jiffies
;
3125 if (nfs4_setup_sequence(NFS_SERVER(inode
)->nfs_client
,
3126 &calldata
->arg
.seq_args
,
3127 &calldata
->res
.seq_res
,
3129 nfs_release_seqid(calldata
->arg
.seqid
);
3130 dprintk("%s: done!\n", __func__
);
3133 task
->tk_action
= NULL
;
3135 nfs4_sequence_done(task
, &calldata
->res
.seq_res
);
3138 static const struct rpc_call_ops nfs4_close_ops
= {
3139 .rpc_call_prepare
= nfs4_close_prepare
,
3140 .rpc_call_done
= nfs4_close_done
,
3141 .rpc_release
= nfs4_free_closedata
,
3145 * It is possible for data to be read/written from a mem-mapped file
3146 * after the sys_close call (which hits the vfs layer as a flush).
3147 * This means that we can't safely call nfsv4 close on a file until
3148 * the inode is cleared. This in turn means that we are not good
3149 * NFSv4 citizens - we do not indicate to the server to update the file's
3150 * share state even when we are done with one of the three share
3151 * stateid's in the inode.
3153 * NOTE: Caller must be holding the sp->so_owner semaphore!
3155 int nfs4_do_close(struct nfs4_state
*state
, gfp_t gfp_mask
, int wait
)
3157 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
3158 struct nfs_seqid
*(*alloc_seqid
)(struct nfs_seqid_counter
*, gfp_t
);
3159 struct nfs4_closedata
*calldata
;
3160 struct nfs4_state_owner
*sp
= state
->owner
;
3161 struct rpc_task
*task
;
3162 struct rpc_message msg
= {
3163 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_CLOSE
],
3164 .rpc_cred
= state
->owner
->so_cred
,
3166 struct rpc_task_setup task_setup_data
= {
3167 .rpc_client
= server
->client
,
3168 .rpc_message
= &msg
,
3169 .callback_ops
= &nfs4_close_ops
,
3170 .workqueue
= nfsiod_workqueue
,
3171 .flags
= RPC_TASK_ASYNC
,
3173 int status
= -ENOMEM
;
3175 nfs4_state_protect(server
->nfs_client
, NFS_SP4_MACH_CRED_CLEANUP
,
3176 &task_setup_data
.rpc_client
, &msg
);
3178 calldata
= kzalloc(sizeof(*calldata
), gfp_mask
);
3179 if (calldata
== NULL
)
3181 nfs4_init_sequence(&calldata
->arg
.seq_args
, &calldata
->res
.seq_res
, 1);
3182 calldata
->inode
= state
->inode
;
3183 calldata
->state
= state
;
3184 calldata
->arg
.fh
= NFS_FH(state
->inode
);
3185 /* Serialization for the sequence id */
3186 alloc_seqid
= server
->nfs_client
->cl_mvops
->alloc_seqid
;
3187 calldata
->arg
.seqid
= alloc_seqid(&state
->owner
->so_seqid
, gfp_mask
);
3188 if (IS_ERR(calldata
->arg
.seqid
))
3189 goto out_free_calldata
;
3190 nfs_fattr_init(&calldata
->fattr
);
3191 calldata
->arg
.fmode
= 0;
3192 calldata
->lr
.arg
.ld_private
= &calldata
->lr
.ld_private
;
3193 calldata
->res
.fattr
= &calldata
->fattr
;
3194 calldata
->res
.seqid
= calldata
->arg
.seqid
;
3195 calldata
->res
.server
= server
;
3196 calldata
->res
.lr_ret
= -NFS4ERR_NOMATCHING_LAYOUT
;
3197 calldata
->lr
.roc
= pnfs_roc(state
->inode
,
3198 &calldata
->lr
.arg
, &calldata
->lr
.res
, msg
.rpc_cred
);
3199 if (calldata
->lr
.roc
) {
3200 calldata
->arg
.lr_args
= &calldata
->lr
.arg
;
3201 calldata
->res
.lr_res
= &calldata
->lr
.res
;
3203 nfs_sb_active(calldata
->inode
->i_sb
);
3205 msg
.rpc_argp
= &calldata
->arg
;
3206 msg
.rpc_resp
= &calldata
->res
;
3207 task_setup_data
.callback_data
= calldata
;
3208 task
= rpc_run_task(&task_setup_data
);
3210 return PTR_ERR(task
);
3213 status
= rpc_wait_for_completion_task(task
);
3219 nfs4_put_open_state(state
);
3220 nfs4_put_state_owner(sp
);
3224 static struct inode
*
3225 nfs4_atomic_open(struct inode
*dir
, struct nfs_open_context
*ctx
,
3226 int open_flags
, struct iattr
*attr
, int *opened
)
3228 struct nfs4_state
*state
;
3229 struct nfs4_label l
= {0, 0, 0, NULL
}, *label
= NULL
;
3231 label
= nfs4_label_init_security(dir
, ctx
->dentry
, attr
, &l
);
3233 /* Protect against concurrent sillydeletes */
3234 state
= nfs4_do_open(dir
, ctx
, open_flags
, attr
, label
, opened
);
3236 nfs4_label_release_security(label
);
3239 return ERR_CAST(state
);
3240 return state
->inode
;
3243 static void nfs4_close_context(struct nfs_open_context
*ctx
, int is_sync
)
3245 if (ctx
->state
== NULL
)
3248 nfs4_close_sync(ctx
->state
, ctx
->mode
);
3250 nfs4_close_state(ctx
->state
, ctx
->mode
);
3253 #define FATTR4_WORD1_NFS40_MASK (2*FATTR4_WORD1_MOUNTED_ON_FILEID - 1UL)
3254 #define FATTR4_WORD2_NFS41_MASK (2*FATTR4_WORD2_SUPPATTR_EXCLCREAT - 1UL)
3255 #define FATTR4_WORD2_NFS42_MASK (2*FATTR4_WORD2_MODE_UMASK - 1UL)
3257 static int _nfs4_server_capabilities(struct nfs_server
*server
, struct nfs_fh
*fhandle
)
3259 u32 bitmask
[3] = {}, minorversion
= server
->nfs_client
->cl_minorversion
;
3260 struct nfs4_server_caps_arg args
= {
3264 struct nfs4_server_caps_res res
= {};
3265 struct rpc_message msg
= {
3266 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SERVER_CAPS
],
3273 bitmask
[0] = FATTR4_WORD0_SUPPORTED_ATTRS
|
3274 FATTR4_WORD0_FH_EXPIRE_TYPE
|
3275 FATTR4_WORD0_LINK_SUPPORT
|
3276 FATTR4_WORD0_SYMLINK_SUPPORT
|
3277 FATTR4_WORD0_ACLSUPPORT
;
3279 bitmask
[2] = FATTR4_WORD2_SUPPATTR_EXCLCREAT
;
3281 status
= nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
3283 /* Sanity check the server answers */
3284 switch (minorversion
) {
3286 res
.attr_bitmask
[1] &= FATTR4_WORD1_NFS40_MASK
;
3287 res
.attr_bitmask
[2] = 0;
3290 res
.attr_bitmask
[2] &= FATTR4_WORD2_NFS41_MASK
;
3293 res
.attr_bitmask
[2] &= FATTR4_WORD2_NFS42_MASK
;
3295 memcpy(server
->attr_bitmask
, res
.attr_bitmask
, sizeof(server
->attr_bitmask
));
3296 server
->caps
&= ~(NFS_CAP_ACLS
|NFS_CAP_HARDLINKS
|
3297 NFS_CAP_SYMLINKS
|NFS_CAP_FILEID
|
3298 NFS_CAP_MODE
|NFS_CAP_NLINK
|NFS_CAP_OWNER
|
3299 NFS_CAP_OWNER_GROUP
|NFS_CAP_ATIME
|
3300 NFS_CAP_CTIME
|NFS_CAP_MTIME
|
3301 NFS_CAP_SECURITY_LABEL
);
3302 if (res
.attr_bitmask
[0] & FATTR4_WORD0_ACL
&&
3303 res
.acl_bitmask
& ACL4_SUPPORT_ALLOW_ACL
)
3304 server
->caps
|= NFS_CAP_ACLS
;
3305 if (res
.has_links
!= 0)
3306 server
->caps
|= NFS_CAP_HARDLINKS
;
3307 if (res
.has_symlinks
!= 0)
3308 server
->caps
|= NFS_CAP_SYMLINKS
;
3309 if (res
.attr_bitmask
[0] & FATTR4_WORD0_FILEID
)
3310 server
->caps
|= NFS_CAP_FILEID
;
3311 if (res
.attr_bitmask
[1] & FATTR4_WORD1_MODE
)
3312 server
->caps
|= NFS_CAP_MODE
;
3313 if (res
.attr_bitmask
[1] & FATTR4_WORD1_NUMLINKS
)
3314 server
->caps
|= NFS_CAP_NLINK
;
3315 if (res
.attr_bitmask
[1] & FATTR4_WORD1_OWNER
)
3316 server
->caps
|= NFS_CAP_OWNER
;
3317 if (res
.attr_bitmask
[1] & FATTR4_WORD1_OWNER_GROUP
)
3318 server
->caps
|= NFS_CAP_OWNER_GROUP
;
3319 if (res
.attr_bitmask
[1] & FATTR4_WORD1_TIME_ACCESS
)
3320 server
->caps
|= NFS_CAP_ATIME
;
3321 if (res
.attr_bitmask
[1] & FATTR4_WORD1_TIME_METADATA
)
3322 server
->caps
|= NFS_CAP_CTIME
;
3323 if (res
.attr_bitmask
[1] & FATTR4_WORD1_TIME_MODIFY
)
3324 server
->caps
|= NFS_CAP_MTIME
;
3325 #ifdef CONFIG_NFS_V4_SECURITY_LABEL
3326 if (res
.attr_bitmask
[2] & FATTR4_WORD2_SECURITY_LABEL
)
3327 server
->caps
|= NFS_CAP_SECURITY_LABEL
;
3329 memcpy(server
->attr_bitmask_nl
, res
.attr_bitmask
,
3330 sizeof(server
->attr_bitmask
));
3331 server
->attr_bitmask_nl
[2] &= ~FATTR4_WORD2_SECURITY_LABEL
;
3333 memcpy(server
->cache_consistency_bitmask
, res
.attr_bitmask
, sizeof(server
->cache_consistency_bitmask
));
3334 server
->cache_consistency_bitmask
[0] &= FATTR4_WORD0_CHANGE
|FATTR4_WORD0_SIZE
;
3335 server
->cache_consistency_bitmask
[1] &= FATTR4_WORD1_TIME_METADATA
|FATTR4_WORD1_TIME_MODIFY
;
3336 server
->cache_consistency_bitmask
[2] = 0;
3338 /* Avoid a regression due to buggy server */
3339 for (i
= 0; i
< ARRAY_SIZE(res
.exclcreat_bitmask
); i
++)
3340 res
.exclcreat_bitmask
[i
] &= res
.attr_bitmask
[i
];
3341 memcpy(server
->exclcreat_bitmask
, res
.exclcreat_bitmask
,
3342 sizeof(server
->exclcreat_bitmask
));
3344 server
->acl_bitmask
= res
.acl_bitmask
;
3345 server
->fh_expire_type
= res
.fh_expire_type
;
3351 int nfs4_server_capabilities(struct nfs_server
*server
, struct nfs_fh
*fhandle
)
3353 struct nfs4_exception exception
= { };
3356 err
= nfs4_handle_exception(server
,
3357 _nfs4_server_capabilities(server
, fhandle
),
3359 } while (exception
.retry
);
3363 static int _nfs4_lookup_root(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
3364 struct nfs_fsinfo
*info
)
3367 struct nfs4_lookup_root_arg args
= {
3370 struct nfs4_lookup_res res
= {
3372 .fattr
= info
->fattr
,
3375 struct rpc_message msg
= {
3376 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOOKUP_ROOT
],
3381 bitmask
[0] = nfs4_fattr_bitmap
[0];
3382 bitmask
[1] = nfs4_fattr_bitmap
[1];
3384 * Process the label in the upcoming getfattr
3386 bitmask
[2] = nfs4_fattr_bitmap
[2] & ~FATTR4_WORD2_SECURITY_LABEL
;
3388 nfs_fattr_init(info
->fattr
);
3389 return nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
3392 static int nfs4_lookup_root(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
3393 struct nfs_fsinfo
*info
)
3395 struct nfs4_exception exception
= { };
3398 err
= _nfs4_lookup_root(server
, fhandle
, info
);
3399 trace_nfs4_lookup_root(server
, fhandle
, info
->fattr
, err
);
3402 case -NFS4ERR_WRONGSEC
:
3405 err
= nfs4_handle_exception(server
, err
, &exception
);
3407 } while (exception
.retry
);
3412 static int nfs4_lookup_root_sec(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
3413 struct nfs_fsinfo
*info
, rpc_authflavor_t flavor
)
3415 struct rpc_auth_create_args auth_args
= {
3416 .pseudoflavor
= flavor
,
3418 struct rpc_auth
*auth
;
3420 auth
= rpcauth_create(&auth_args
, server
->client
);
3423 return nfs4_lookup_root(server
, fhandle
, info
);
3427 * Retry pseudoroot lookup with various security flavors. We do this when:
3429 * NFSv4.0: the PUTROOTFH operation returns NFS4ERR_WRONGSEC
3430 * NFSv4.1: the server does not support the SECINFO_NO_NAME operation
3432 * Returns zero on success, or a negative NFS4ERR value, or a
3433 * negative errno value.
3435 static int nfs4_find_root_sec(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
3436 struct nfs_fsinfo
*info
)
3438 /* Per 3530bis 15.33.5 */
3439 static const rpc_authflavor_t flav_array
[] = {
3443 RPC_AUTH_UNIX
, /* courtesy */
3446 int status
= -EPERM
;
3449 if (server
->auth_info
.flavor_len
> 0) {
3450 /* try each flavor specified by user */
3451 for (i
= 0; i
< server
->auth_info
.flavor_len
; i
++) {
3452 status
= nfs4_lookup_root_sec(server
, fhandle
, info
,
3453 server
->auth_info
.flavors
[i
]);
3454 if (status
== -NFS4ERR_WRONGSEC
|| status
== -EACCES
)
3459 /* no flavors specified by user, try default list */
3460 for (i
= 0; i
< ARRAY_SIZE(flav_array
); i
++) {
3461 status
= nfs4_lookup_root_sec(server
, fhandle
, info
,
3463 if (status
== -NFS4ERR_WRONGSEC
|| status
== -EACCES
)
3470 * -EACCESS could mean that the user doesn't have correct permissions
3471 * to access the mount. It could also mean that we tried to mount
3472 * with a gss auth flavor, but rpc.gssd isn't running. Either way,
3473 * existing mount programs don't handle -EACCES very well so it should
3474 * be mapped to -EPERM instead.
3476 if (status
== -EACCES
)
3482 * nfs4_proc_get_rootfh - get file handle for server's pseudoroot
3483 * @server: initialized nfs_server handle
3484 * @fhandle: we fill in the pseudo-fs root file handle
3485 * @info: we fill in an FSINFO struct
3486 * @auth_probe: probe the auth flavours
3488 * Returns zero on success, or a negative errno.
3490 int nfs4_proc_get_rootfh(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
3491 struct nfs_fsinfo
*info
,
3497 status
= nfs4_lookup_root(server
, fhandle
, info
);
3499 if (auth_probe
|| status
== NFS4ERR_WRONGSEC
)
3500 status
= server
->nfs_client
->cl_mvops
->find_root_sec(server
,
3504 status
= nfs4_server_capabilities(server
, fhandle
);
3506 status
= nfs4_do_fsinfo(server
, fhandle
, info
);
3508 return nfs4_map_errors(status
);
3511 static int nfs4_proc_get_root(struct nfs_server
*server
, struct nfs_fh
*mntfh
,
3512 struct nfs_fsinfo
*info
)
3515 struct nfs_fattr
*fattr
= info
->fattr
;
3516 struct nfs4_label
*label
= NULL
;
3518 error
= nfs4_server_capabilities(server
, mntfh
);
3520 dprintk("nfs4_get_root: getcaps error = %d\n", -error
);
3524 label
= nfs4_label_alloc(server
, GFP_KERNEL
);
3526 return PTR_ERR(label
);
3528 error
= nfs4_proc_getattr(server
, mntfh
, fattr
, label
);
3530 dprintk("nfs4_get_root: getattr error = %d\n", -error
);
3531 goto err_free_label
;
3534 if (fattr
->valid
& NFS_ATTR_FATTR_FSID
&&
3535 !nfs_fsid_equal(&server
->fsid
, &fattr
->fsid
))
3536 memcpy(&server
->fsid
, &fattr
->fsid
, sizeof(server
->fsid
));
3539 nfs4_label_free(label
);
3545 * Get locations and (maybe) other attributes of a referral.
3546 * Note that we'll actually follow the referral later when
3547 * we detect fsid mismatch in inode revalidation
3549 static int nfs4_get_referral(struct rpc_clnt
*client
, struct inode
*dir
,
3550 const struct qstr
*name
, struct nfs_fattr
*fattr
,
3551 struct nfs_fh
*fhandle
)
3553 int status
= -ENOMEM
;
3554 struct page
*page
= NULL
;
3555 struct nfs4_fs_locations
*locations
= NULL
;
3557 page
= alloc_page(GFP_KERNEL
);
3560 locations
= kmalloc(sizeof(struct nfs4_fs_locations
), GFP_KERNEL
);
3561 if (locations
== NULL
)
3564 status
= nfs4_proc_fs_locations(client
, dir
, name
, locations
, page
);
3569 * If the fsid didn't change, this is a migration event, not a
3570 * referral. Cause us to drop into the exception handler, which
3571 * will kick off migration recovery.
3573 if (nfs_fsid_equal(&NFS_SERVER(dir
)->fsid
, &locations
->fattr
.fsid
)) {
3574 dprintk("%s: server did not return a different fsid for"
3575 " a referral at %s\n", __func__
, name
->name
);
3576 status
= -NFS4ERR_MOVED
;
3579 /* Fixup attributes for the nfs_lookup() call to nfs_fhget() */
3580 nfs_fixup_referral_attributes(&locations
->fattr
);
3582 /* replace the lookup nfs_fattr with the locations nfs_fattr */
3583 memcpy(fattr
, &locations
->fattr
, sizeof(struct nfs_fattr
));
3584 memset(fhandle
, 0, sizeof(struct nfs_fh
));
3592 static int _nfs4_proc_getattr(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
3593 struct nfs_fattr
*fattr
, struct nfs4_label
*label
)
3595 struct nfs4_getattr_arg args
= {
3597 .bitmask
= server
->attr_bitmask
,
3599 struct nfs4_getattr_res res
= {
3604 struct rpc_message msg
= {
3605 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GETATTR
],
3610 args
.bitmask
= nfs4_bitmask(server
, label
);
3612 nfs_fattr_init(fattr
);
3613 return nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
3616 static int nfs4_proc_getattr(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
3617 struct nfs_fattr
*fattr
, struct nfs4_label
*label
)
3619 struct nfs4_exception exception
= { };
3622 err
= _nfs4_proc_getattr(server
, fhandle
, fattr
, label
);
3623 trace_nfs4_getattr(server
, fhandle
, fattr
, err
);
3624 err
= nfs4_handle_exception(server
, err
,
3626 } while (exception
.retry
);
3631 * The file is not closed if it is opened due to the a request to change
3632 * the size of the file. The open call will not be needed once the
3633 * VFS layer lookup-intents are implemented.
3635 * Close is called when the inode is destroyed.
3636 * If we haven't opened the file for O_WRONLY, we
3637 * need to in the size_change case to obtain a stateid.
3640 * Because OPEN is always done by name in nfsv4, it is
3641 * possible that we opened a different file by the same
3642 * name. We can recognize this race condition, but we
3643 * can't do anything about it besides returning an error.
3645 * This will be fixed with VFS changes (lookup-intent).
3648 nfs4_proc_setattr(struct dentry
*dentry
, struct nfs_fattr
*fattr
,
3649 struct iattr
*sattr
)
3651 struct inode
*inode
= d_inode(dentry
);
3652 struct rpc_cred
*cred
= NULL
;
3653 struct nfs_open_context
*ctx
= NULL
;
3654 struct nfs4_label
*label
= NULL
;
3657 if (pnfs_ld_layoutret_on_setattr(inode
) &&
3658 sattr
->ia_valid
& ATTR_SIZE
&&
3659 sattr
->ia_size
< i_size_read(inode
))
3660 pnfs_commit_and_return_layout(inode
);
3662 nfs_fattr_init(fattr
);
3664 /* Deal with open(O_TRUNC) */
3665 if (sattr
->ia_valid
& ATTR_OPEN
)
3666 sattr
->ia_valid
&= ~(ATTR_MTIME
|ATTR_CTIME
);
3668 /* Optimization: if the end result is no change, don't RPC */
3669 if ((sattr
->ia_valid
& ~(ATTR_FILE
|ATTR_OPEN
)) == 0)
3672 /* Search for an existing open(O_WRITE) file */
3673 if (sattr
->ia_valid
& ATTR_FILE
) {
3675 ctx
= nfs_file_open_context(sattr
->ia_file
);
3680 label
= nfs4_label_alloc(NFS_SERVER(inode
), GFP_KERNEL
);
3682 return PTR_ERR(label
);
3684 status
= nfs4_do_setattr(inode
, cred
, fattr
, sattr
, ctx
, NULL
, label
);
3686 nfs_setattr_update_inode(inode
, sattr
, fattr
);
3687 nfs_setsecurity(inode
, fattr
, label
);
3689 nfs4_label_free(label
);
3693 static int _nfs4_proc_lookup(struct rpc_clnt
*clnt
, struct inode
*dir
,
3694 const struct qstr
*name
, struct nfs_fh
*fhandle
,
3695 struct nfs_fattr
*fattr
, struct nfs4_label
*label
)
3697 struct nfs_server
*server
= NFS_SERVER(dir
);
3699 struct nfs4_lookup_arg args
= {
3700 .bitmask
= server
->attr_bitmask
,
3701 .dir_fh
= NFS_FH(dir
),
3704 struct nfs4_lookup_res res
= {
3710 struct rpc_message msg
= {
3711 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOOKUP
],
3716 args
.bitmask
= nfs4_bitmask(server
, label
);
3718 nfs_fattr_init(fattr
);
3720 dprintk("NFS call lookup %s\n", name
->name
);
3721 status
= nfs4_call_sync(clnt
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
3722 dprintk("NFS reply lookup: %d\n", status
);
3726 static void nfs_fixup_secinfo_attributes(struct nfs_fattr
*fattr
)
3728 fattr
->valid
|= NFS_ATTR_FATTR_TYPE
| NFS_ATTR_FATTR_MODE
|
3729 NFS_ATTR_FATTR_NLINK
| NFS_ATTR_FATTR_MOUNTPOINT
;
3730 fattr
->mode
= S_IFDIR
| S_IRUGO
| S_IXUGO
;
3734 static int nfs4_proc_lookup_common(struct rpc_clnt
**clnt
, struct inode
*dir
,
3735 const struct qstr
*name
, struct nfs_fh
*fhandle
,
3736 struct nfs_fattr
*fattr
, struct nfs4_label
*label
)
3738 struct nfs4_exception exception
= { };
3739 struct rpc_clnt
*client
= *clnt
;
3742 err
= _nfs4_proc_lookup(client
, dir
, name
, fhandle
, fattr
, label
);
3743 trace_nfs4_lookup(dir
, name
, err
);
3745 case -NFS4ERR_BADNAME
:
3748 case -NFS4ERR_MOVED
:
3749 err
= nfs4_get_referral(client
, dir
, name
, fattr
, fhandle
);
3750 if (err
== -NFS4ERR_MOVED
)
3751 err
= nfs4_handle_exception(NFS_SERVER(dir
), err
, &exception
);
3753 case -NFS4ERR_WRONGSEC
:
3755 if (client
!= *clnt
)
3757 client
= nfs4_negotiate_security(client
, dir
, name
);
3759 return PTR_ERR(client
);
3761 exception
.retry
= 1;
3764 err
= nfs4_handle_exception(NFS_SERVER(dir
), err
, &exception
);
3766 } while (exception
.retry
);
3771 else if (client
!= *clnt
)
3772 rpc_shutdown_client(client
);
3777 static int nfs4_proc_lookup(struct inode
*dir
, const struct qstr
*name
,
3778 struct nfs_fh
*fhandle
, struct nfs_fattr
*fattr
,
3779 struct nfs4_label
*label
)
3782 struct rpc_clnt
*client
= NFS_CLIENT(dir
);
3784 status
= nfs4_proc_lookup_common(&client
, dir
, name
, fhandle
, fattr
, label
);
3785 if (client
!= NFS_CLIENT(dir
)) {
3786 rpc_shutdown_client(client
);
3787 nfs_fixup_secinfo_attributes(fattr
);
3793 nfs4_proc_lookup_mountpoint(struct inode
*dir
, const struct qstr
*name
,
3794 struct nfs_fh
*fhandle
, struct nfs_fattr
*fattr
)
3796 struct rpc_clnt
*client
= NFS_CLIENT(dir
);
3799 status
= nfs4_proc_lookup_common(&client
, dir
, name
, fhandle
, fattr
, NULL
);
3801 return ERR_PTR(status
);
3802 return (client
== NFS_CLIENT(dir
)) ? rpc_clone_client(client
) : client
;
3805 static int _nfs4_proc_access(struct inode
*inode
, struct nfs_access_entry
*entry
)
3807 struct nfs_server
*server
= NFS_SERVER(inode
);
3808 struct nfs4_accessargs args
= {
3809 .fh
= NFS_FH(inode
),
3810 .bitmask
= server
->cache_consistency_bitmask
,
3812 struct nfs4_accessres res
= {
3815 struct rpc_message msg
= {
3816 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_ACCESS
],
3819 .rpc_cred
= entry
->cred
,
3821 int mode
= entry
->mask
;
3825 * Determine which access bits we want to ask for...
3827 if (mode
& MAY_READ
)
3828 args
.access
|= NFS4_ACCESS_READ
;
3829 if (S_ISDIR(inode
->i_mode
)) {
3830 if (mode
& MAY_WRITE
)
3831 args
.access
|= NFS4_ACCESS_MODIFY
| NFS4_ACCESS_EXTEND
| NFS4_ACCESS_DELETE
;
3832 if (mode
& MAY_EXEC
)
3833 args
.access
|= NFS4_ACCESS_LOOKUP
;
3835 if (mode
& MAY_WRITE
)
3836 args
.access
|= NFS4_ACCESS_MODIFY
| NFS4_ACCESS_EXTEND
;
3837 if (mode
& MAY_EXEC
)
3838 args
.access
|= NFS4_ACCESS_EXECUTE
;
3841 res
.fattr
= nfs_alloc_fattr();
3842 if (res
.fattr
== NULL
)
3845 status
= nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
3847 nfs_access_set_mask(entry
, res
.access
);
3848 nfs_refresh_inode(inode
, res
.fattr
);
3850 nfs_free_fattr(res
.fattr
);
3854 static int nfs4_proc_access(struct inode
*inode
, struct nfs_access_entry
*entry
)
3856 struct nfs4_exception exception
= { };
3859 err
= _nfs4_proc_access(inode
, entry
);
3860 trace_nfs4_access(inode
, err
);
3861 err
= nfs4_handle_exception(NFS_SERVER(inode
), err
,
3863 } while (exception
.retry
);
3868 * TODO: For the time being, we don't try to get any attributes
3869 * along with any of the zero-copy operations READ, READDIR,
3872 * In the case of the first three, we want to put the GETATTR
3873 * after the read-type operation -- this is because it is hard
3874 * to predict the length of a GETATTR response in v4, and thus
3875 * align the READ data correctly. This means that the GETATTR
3876 * may end up partially falling into the page cache, and we should
3877 * shift it into the 'tail' of the xdr_buf before processing.
3878 * To do this efficiently, we need to know the total length
3879 * of data received, which doesn't seem to be available outside
3882 * In the case of WRITE, we also want to put the GETATTR after
3883 * the operation -- in this case because we want to make sure
3884 * we get the post-operation mtime and size.
3886 * Both of these changes to the XDR layer would in fact be quite
3887 * minor, but I decided to leave them for a subsequent patch.
3889 static int _nfs4_proc_readlink(struct inode
*inode
, struct page
*page
,
3890 unsigned int pgbase
, unsigned int pglen
)
3892 struct nfs4_readlink args
= {
3893 .fh
= NFS_FH(inode
),
3898 struct nfs4_readlink_res res
;
3899 struct rpc_message msg
= {
3900 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_READLINK
],
3905 return nfs4_call_sync(NFS_SERVER(inode
)->client
, NFS_SERVER(inode
), &msg
, &args
.seq_args
, &res
.seq_res
, 0);
3908 static int nfs4_proc_readlink(struct inode
*inode
, struct page
*page
,
3909 unsigned int pgbase
, unsigned int pglen
)
3911 struct nfs4_exception exception
= { };
3914 err
= _nfs4_proc_readlink(inode
, page
, pgbase
, pglen
);
3915 trace_nfs4_readlink(inode
, err
);
3916 err
= nfs4_handle_exception(NFS_SERVER(inode
), err
,
3918 } while (exception
.retry
);
3923 * This is just for mknod. open(O_CREAT) will always do ->open_context().
3926 nfs4_proc_create(struct inode
*dir
, struct dentry
*dentry
, struct iattr
*sattr
,
3929 struct nfs_server
*server
= NFS_SERVER(dir
);
3930 struct nfs4_label l
, *ilabel
= NULL
;
3931 struct nfs_open_context
*ctx
;
3932 struct nfs4_state
*state
;
3935 ctx
= alloc_nfs_open_context(dentry
, FMODE_READ
, NULL
);
3937 return PTR_ERR(ctx
);
3939 ilabel
= nfs4_label_init_security(dir
, dentry
, sattr
, &l
);
3941 if (!(server
->attr_bitmask
[2] & FATTR4_WORD2_MODE_UMASK
))
3942 sattr
->ia_mode
&= ~current_umask();
3943 state
= nfs4_do_open(dir
, ctx
, flags
, sattr
, ilabel
, NULL
);
3944 if (IS_ERR(state
)) {
3945 status
= PTR_ERR(state
);
3949 nfs4_label_release_security(ilabel
);
3950 put_nfs_open_context(ctx
);
3954 static int _nfs4_proc_remove(struct inode
*dir
, const struct qstr
*name
)
3956 struct nfs_server
*server
= NFS_SERVER(dir
);
3957 struct nfs_removeargs args
= {
3961 struct nfs_removeres res
= {
3964 struct rpc_message msg
= {
3965 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_REMOVE
],
3969 unsigned long timestamp
= jiffies
;
3972 status
= nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 1);
3974 update_changeattr(dir
, &res
.cinfo
, timestamp
);
3978 static int nfs4_proc_remove(struct inode
*dir
, const struct qstr
*name
)
3980 struct nfs4_exception exception
= { };
3983 err
= _nfs4_proc_remove(dir
, name
);
3984 trace_nfs4_remove(dir
, name
, err
);
3985 err
= nfs4_handle_exception(NFS_SERVER(dir
), err
,
3987 } while (exception
.retry
);
3991 static void nfs4_proc_unlink_setup(struct rpc_message
*msg
, struct inode
*dir
)
3993 struct nfs_server
*server
= NFS_SERVER(dir
);
3994 struct nfs_removeargs
*args
= msg
->rpc_argp
;
3995 struct nfs_removeres
*res
= msg
->rpc_resp
;
3997 res
->server
= server
;
3998 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_REMOVE
];
3999 nfs4_init_sequence(&args
->seq_args
, &res
->seq_res
, 1);
4001 nfs_fattr_init(res
->dir_attr
);
4004 static void nfs4_proc_unlink_rpc_prepare(struct rpc_task
*task
, struct nfs_unlinkdata
*data
)
4006 nfs4_setup_sequence(NFS_SB(data
->dentry
->d_sb
)->nfs_client
,
4007 &data
->args
.seq_args
,
4012 static int nfs4_proc_unlink_done(struct rpc_task
*task
, struct inode
*dir
)
4014 struct nfs_unlinkdata
*data
= task
->tk_calldata
;
4015 struct nfs_removeres
*res
= &data
->res
;
4017 if (!nfs4_sequence_done(task
, &res
->seq_res
))
4019 if (nfs4_async_handle_error(task
, res
->server
, NULL
,
4020 &data
->timeout
) == -EAGAIN
)
4022 if (task
->tk_status
== 0)
4023 update_changeattr(dir
, &res
->cinfo
, res
->dir_attr
->time_start
);
4027 static void nfs4_proc_rename_setup(struct rpc_message
*msg
, struct inode
*dir
)
4029 struct nfs_server
*server
= NFS_SERVER(dir
);
4030 struct nfs_renameargs
*arg
= msg
->rpc_argp
;
4031 struct nfs_renameres
*res
= msg
->rpc_resp
;
4033 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RENAME
];
4034 res
->server
= server
;
4035 nfs4_init_sequence(&arg
->seq_args
, &res
->seq_res
, 1);
4038 static void nfs4_proc_rename_rpc_prepare(struct rpc_task
*task
, struct nfs_renamedata
*data
)
4040 nfs4_setup_sequence(NFS_SERVER(data
->old_dir
)->nfs_client
,
4041 &data
->args
.seq_args
,
4046 static int nfs4_proc_rename_done(struct rpc_task
*task
, struct inode
*old_dir
,
4047 struct inode
*new_dir
)
4049 struct nfs_renamedata
*data
= task
->tk_calldata
;
4050 struct nfs_renameres
*res
= &data
->res
;
4052 if (!nfs4_sequence_done(task
, &res
->seq_res
))
4054 if (nfs4_async_handle_error(task
, res
->server
, NULL
, &data
->timeout
) == -EAGAIN
)
4057 if (task
->tk_status
== 0) {
4058 update_changeattr(old_dir
, &res
->old_cinfo
, res
->old_fattr
->time_start
);
4059 if (new_dir
!= old_dir
)
4060 update_changeattr(new_dir
, &res
->new_cinfo
, res
->new_fattr
->time_start
);
4065 static int _nfs4_proc_link(struct inode
*inode
, struct inode
*dir
, const struct qstr
*name
)
4067 struct nfs_server
*server
= NFS_SERVER(inode
);
4068 struct nfs4_link_arg arg
= {
4069 .fh
= NFS_FH(inode
),
4070 .dir_fh
= NFS_FH(dir
),
4072 .bitmask
= server
->attr_bitmask
,
4074 struct nfs4_link_res res
= {
4078 struct rpc_message msg
= {
4079 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LINK
],
4083 int status
= -ENOMEM
;
4085 res
.fattr
= nfs_alloc_fattr();
4086 if (res
.fattr
== NULL
)
4089 res
.label
= nfs4_label_alloc(server
, GFP_KERNEL
);
4090 if (IS_ERR(res
.label
)) {
4091 status
= PTR_ERR(res
.label
);
4094 arg
.bitmask
= nfs4_bitmask(server
, res
.label
);
4096 status
= nfs4_call_sync(server
->client
, server
, &msg
, &arg
.seq_args
, &res
.seq_res
, 1);
4098 update_changeattr(dir
, &res
.cinfo
, res
.fattr
->time_start
);
4099 status
= nfs_post_op_update_inode(inode
, res
.fattr
);
4101 nfs_setsecurity(inode
, res
.fattr
, res
.label
);
4105 nfs4_label_free(res
.label
);
4108 nfs_free_fattr(res
.fattr
);
4112 static int nfs4_proc_link(struct inode
*inode
, struct inode
*dir
, const struct qstr
*name
)
4114 struct nfs4_exception exception
= { };
4117 err
= nfs4_handle_exception(NFS_SERVER(inode
),
4118 _nfs4_proc_link(inode
, dir
, name
),
4120 } while (exception
.retry
);
4124 struct nfs4_createdata
{
4125 struct rpc_message msg
;
4126 struct nfs4_create_arg arg
;
4127 struct nfs4_create_res res
;
4129 struct nfs_fattr fattr
;
4130 struct nfs4_label
*label
;
4133 static struct nfs4_createdata
*nfs4_alloc_createdata(struct inode
*dir
,
4134 const struct qstr
*name
, struct iattr
*sattr
, u32 ftype
)
4136 struct nfs4_createdata
*data
;
4138 data
= kzalloc(sizeof(*data
), GFP_KERNEL
);
4140 struct nfs_server
*server
= NFS_SERVER(dir
);
4142 data
->label
= nfs4_label_alloc(server
, GFP_KERNEL
);
4143 if (IS_ERR(data
->label
))
4146 data
->msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_CREATE
];
4147 data
->msg
.rpc_argp
= &data
->arg
;
4148 data
->msg
.rpc_resp
= &data
->res
;
4149 data
->arg
.dir_fh
= NFS_FH(dir
);
4150 data
->arg
.server
= server
;
4151 data
->arg
.name
= name
;
4152 data
->arg
.attrs
= sattr
;
4153 data
->arg
.ftype
= ftype
;
4154 data
->arg
.bitmask
= nfs4_bitmask(server
, data
->label
);
4155 data
->arg
.umask
= current_umask();
4156 data
->res
.server
= server
;
4157 data
->res
.fh
= &data
->fh
;
4158 data
->res
.fattr
= &data
->fattr
;
4159 data
->res
.label
= data
->label
;
4160 nfs_fattr_init(data
->res
.fattr
);
4168 static int nfs4_do_create(struct inode
*dir
, struct dentry
*dentry
, struct nfs4_createdata
*data
)
4170 int status
= nfs4_call_sync(NFS_SERVER(dir
)->client
, NFS_SERVER(dir
), &data
->msg
,
4171 &data
->arg
.seq_args
, &data
->res
.seq_res
, 1);
4173 update_changeattr(dir
, &data
->res
.dir_cinfo
,
4174 data
->res
.fattr
->time_start
);
4175 status
= nfs_instantiate(dentry
, data
->res
.fh
, data
->res
.fattr
, data
->res
.label
);
4180 static void nfs4_free_createdata(struct nfs4_createdata
*data
)
4182 nfs4_label_free(data
->label
);
4186 static int _nfs4_proc_symlink(struct inode
*dir
, struct dentry
*dentry
,
4187 struct page
*page
, unsigned int len
, struct iattr
*sattr
,
4188 struct nfs4_label
*label
)
4190 struct nfs4_createdata
*data
;
4191 int status
= -ENAMETOOLONG
;
4193 if (len
> NFS4_MAXPATHLEN
)
4197 data
= nfs4_alloc_createdata(dir
, &dentry
->d_name
, sattr
, NF4LNK
);
4201 data
->msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SYMLINK
];
4202 data
->arg
.u
.symlink
.pages
= &page
;
4203 data
->arg
.u
.symlink
.len
= len
;
4204 data
->arg
.label
= label
;
4206 status
= nfs4_do_create(dir
, dentry
, data
);
4208 nfs4_free_createdata(data
);
4213 static int nfs4_proc_symlink(struct inode
*dir
, struct dentry
*dentry
,
4214 struct page
*page
, unsigned int len
, struct iattr
*sattr
)
4216 struct nfs4_exception exception
= { };
4217 struct nfs4_label l
, *label
= NULL
;
4220 label
= nfs4_label_init_security(dir
, dentry
, sattr
, &l
);
4223 err
= _nfs4_proc_symlink(dir
, dentry
, page
, len
, sattr
, label
);
4224 trace_nfs4_symlink(dir
, &dentry
->d_name
, err
);
4225 err
= nfs4_handle_exception(NFS_SERVER(dir
), err
,
4227 } while (exception
.retry
);
4229 nfs4_label_release_security(label
);
4233 static int _nfs4_proc_mkdir(struct inode
*dir
, struct dentry
*dentry
,
4234 struct iattr
*sattr
, struct nfs4_label
*label
)
4236 struct nfs4_createdata
*data
;
4237 int status
= -ENOMEM
;
4239 data
= nfs4_alloc_createdata(dir
, &dentry
->d_name
, sattr
, NF4DIR
);
4243 data
->arg
.label
= label
;
4244 status
= nfs4_do_create(dir
, dentry
, data
);
4246 nfs4_free_createdata(data
);
4251 static int nfs4_proc_mkdir(struct inode
*dir
, struct dentry
*dentry
,
4252 struct iattr
*sattr
)
4254 struct nfs_server
*server
= NFS_SERVER(dir
);
4255 struct nfs4_exception exception
= { };
4256 struct nfs4_label l
, *label
= NULL
;
4259 label
= nfs4_label_init_security(dir
, dentry
, sattr
, &l
);
4261 if (!(server
->attr_bitmask
[2] & FATTR4_WORD2_MODE_UMASK
))
4262 sattr
->ia_mode
&= ~current_umask();
4264 err
= _nfs4_proc_mkdir(dir
, dentry
, sattr
, label
);
4265 trace_nfs4_mkdir(dir
, &dentry
->d_name
, err
);
4266 err
= nfs4_handle_exception(NFS_SERVER(dir
), err
,
4268 } while (exception
.retry
);
4269 nfs4_label_release_security(label
);
4274 static int _nfs4_proc_readdir(struct dentry
*dentry
, struct rpc_cred
*cred
,
4275 u64 cookie
, struct page
**pages
, unsigned int count
, int plus
)
4277 struct inode
*dir
= d_inode(dentry
);
4278 struct nfs4_readdir_arg args
= {
4283 .bitmask
= NFS_SERVER(d_inode(dentry
))->attr_bitmask
,
4286 struct nfs4_readdir_res res
;
4287 struct rpc_message msg
= {
4288 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_READDIR
],
4295 dprintk("%s: dentry = %pd2, cookie = %Lu\n", __func__
,
4297 (unsigned long long)cookie
);
4298 nfs4_setup_readdir(cookie
, NFS_I(dir
)->cookieverf
, dentry
, &args
);
4299 res
.pgbase
= args
.pgbase
;
4300 status
= nfs4_call_sync(NFS_SERVER(dir
)->client
, NFS_SERVER(dir
), &msg
, &args
.seq_args
, &res
.seq_res
, 0);
4302 memcpy(NFS_I(dir
)->cookieverf
, res
.verifier
.data
, NFS4_VERIFIER_SIZE
);
4303 status
+= args
.pgbase
;
4306 nfs_invalidate_atime(dir
);
4308 dprintk("%s: returns %d\n", __func__
, status
);
4312 static int nfs4_proc_readdir(struct dentry
*dentry
, struct rpc_cred
*cred
,
4313 u64 cookie
, struct page
**pages
, unsigned int count
, int plus
)
4315 struct nfs4_exception exception
= { };
4318 err
= _nfs4_proc_readdir(dentry
, cred
, cookie
,
4319 pages
, count
, plus
);
4320 trace_nfs4_readdir(d_inode(dentry
), err
);
4321 err
= nfs4_handle_exception(NFS_SERVER(d_inode(dentry
)), err
,
4323 } while (exception
.retry
);
4327 static int _nfs4_proc_mknod(struct inode
*dir
, struct dentry
*dentry
,
4328 struct iattr
*sattr
, struct nfs4_label
*label
, dev_t rdev
)
4330 struct nfs4_createdata
*data
;
4331 int mode
= sattr
->ia_mode
;
4332 int status
= -ENOMEM
;
4334 data
= nfs4_alloc_createdata(dir
, &dentry
->d_name
, sattr
, NF4SOCK
);
4339 data
->arg
.ftype
= NF4FIFO
;
4340 else if (S_ISBLK(mode
)) {
4341 data
->arg
.ftype
= NF4BLK
;
4342 data
->arg
.u
.device
.specdata1
= MAJOR(rdev
);
4343 data
->arg
.u
.device
.specdata2
= MINOR(rdev
);
4345 else if (S_ISCHR(mode
)) {
4346 data
->arg
.ftype
= NF4CHR
;
4347 data
->arg
.u
.device
.specdata1
= MAJOR(rdev
);
4348 data
->arg
.u
.device
.specdata2
= MINOR(rdev
);
4349 } else if (!S_ISSOCK(mode
)) {
4354 data
->arg
.label
= label
;
4355 status
= nfs4_do_create(dir
, dentry
, data
);
4357 nfs4_free_createdata(data
);
4362 static int nfs4_proc_mknod(struct inode
*dir
, struct dentry
*dentry
,
4363 struct iattr
*sattr
, dev_t rdev
)
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_mknod(dir
, dentry
, sattr
, label
, rdev
);
4376 trace_nfs4_mknod(dir
, &dentry
->d_name
, err
);
4377 err
= nfs4_handle_exception(NFS_SERVER(dir
), err
,
4379 } while (exception
.retry
);
4381 nfs4_label_release_security(label
);
4386 static int _nfs4_proc_statfs(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
4387 struct nfs_fsstat
*fsstat
)
4389 struct nfs4_statfs_arg args
= {
4391 .bitmask
= server
->attr_bitmask
,
4393 struct nfs4_statfs_res res
= {
4396 struct rpc_message msg
= {
4397 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_STATFS
],
4402 nfs_fattr_init(fsstat
->fattr
);
4403 return nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
4406 static int nfs4_proc_statfs(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fsstat
*fsstat
)
4408 struct nfs4_exception exception
= { };
4411 err
= nfs4_handle_exception(server
,
4412 _nfs4_proc_statfs(server
, fhandle
, fsstat
),
4414 } while (exception
.retry
);
4418 static int _nfs4_do_fsinfo(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
4419 struct nfs_fsinfo
*fsinfo
)
4421 struct nfs4_fsinfo_arg args
= {
4423 .bitmask
= server
->attr_bitmask
,
4425 struct nfs4_fsinfo_res res
= {
4428 struct rpc_message msg
= {
4429 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_FSINFO
],
4434 return nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
4437 static int nfs4_do_fsinfo(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fsinfo
*fsinfo
)
4439 struct nfs4_exception exception
= { };
4440 unsigned long now
= jiffies
;
4444 err
= _nfs4_do_fsinfo(server
, fhandle
, fsinfo
);
4445 trace_nfs4_fsinfo(server
, fhandle
, fsinfo
->fattr
, err
);
4447 nfs4_set_lease_period(server
->nfs_client
,
4448 fsinfo
->lease_time
* HZ
,
4452 err
= nfs4_handle_exception(server
, err
, &exception
);
4453 } while (exception
.retry
);
4457 static int nfs4_proc_fsinfo(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fsinfo
*fsinfo
)
4461 nfs_fattr_init(fsinfo
->fattr
);
4462 error
= nfs4_do_fsinfo(server
, fhandle
, fsinfo
);
4464 /* block layout checks this! */
4465 server
->pnfs_blksize
= fsinfo
->blksize
;
4466 set_pnfs_layoutdriver(server
, fhandle
, fsinfo
);
4472 static int _nfs4_proc_pathconf(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
4473 struct nfs_pathconf
*pathconf
)
4475 struct nfs4_pathconf_arg args
= {
4477 .bitmask
= server
->attr_bitmask
,
4479 struct nfs4_pathconf_res res
= {
4480 .pathconf
= pathconf
,
4482 struct rpc_message msg
= {
4483 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_PATHCONF
],
4488 /* None of the pathconf attributes are mandatory to implement */
4489 if ((args
.bitmask
[0] & nfs4_pathconf_bitmap
[0]) == 0) {
4490 memset(pathconf
, 0, sizeof(*pathconf
));
4494 nfs_fattr_init(pathconf
->fattr
);
4495 return nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
4498 static int nfs4_proc_pathconf(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
4499 struct nfs_pathconf
*pathconf
)
4501 struct nfs4_exception exception
= { };
4505 err
= nfs4_handle_exception(server
,
4506 _nfs4_proc_pathconf(server
, fhandle
, pathconf
),
4508 } while (exception
.retry
);
4512 int nfs4_set_rw_stateid(nfs4_stateid
*stateid
,
4513 const struct nfs_open_context
*ctx
,
4514 const struct nfs_lock_context
*l_ctx
,
4517 return nfs4_select_rw_stateid(ctx
->state
, fmode
, l_ctx
, stateid
, NULL
);
4519 EXPORT_SYMBOL_GPL(nfs4_set_rw_stateid
);
4521 static bool nfs4_stateid_is_current(nfs4_stateid
*stateid
,
4522 const struct nfs_open_context
*ctx
,
4523 const struct nfs_lock_context
*l_ctx
,
4526 nfs4_stateid current_stateid
;
4528 /* If the current stateid represents a lost lock, then exit */
4529 if (nfs4_set_rw_stateid(¤t_stateid
, ctx
, l_ctx
, fmode
) == -EIO
)
4531 return nfs4_stateid_match(stateid
, ¤t_stateid
);
4534 static bool nfs4_error_stateid_expired(int err
)
4537 case -NFS4ERR_DELEG_REVOKED
:
4538 case -NFS4ERR_ADMIN_REVOKED
:
4539 case -NFS4ERR_BAD_STATEID
:
4540 case -NFS4ERR_STALE_STATEID
:
4541 case -NFS4ERR_OLD_STATEID
:
4542 case -NFS4ERR_OPENMODE
:
4543 case -NFS4ERR_EXPIRED
:
4549 static int nfs4_read_done_cb(struct rpc_task
*task
, struct nfs_pgio_header
*hdr
)
4551 struct nfs_server
*server
= NFS_SERVER(hdr
->inode
);
4553 trace_nfs4_read(hdr
, task
->tk_status
);
4554 if (task
->tk_status
< 0) {
4555 struct nfs4_exception exception
= {
4556 .inode
= hdr
->inode
,
4557 .state
= hdr
->args
.context
->state
,
4558 .stateid
= &hdr
->args
.stateid
,
4560 task
->tk_status
= nfs4_async_handle_exception(task
,
4561 server
, task
->tk_status
, &exception
);
4562 if (exception
.retry
) {
4563 rpc_restart_call_prepare(task
);
4568 if (task
->tk_status
> 0)
4569 renew_lease(server
, hdr
->timestamp
);
4573 static bool nfs4_read_stateid_changed(struct rpc_task
*task
,
4574 struct nfs_pgio_args
*args
)
4577 if (!nfs4_error_stateid_expired(task
->tk_status
) ||
4578 nfs4_stateid_is_current(&args
->stateid
,
4583 rpc_restart_call_prepare(task
);
4587 static int nfs4_read_done(struct rpc_task
*task
, struct nfs_pgio_header
*hdr
)
4590 dprintk("--> %s\n", __func__
);
4592 if (!nfs4_sequence_done(task
, &hdr
->res
.seq_res
))
4594 if (nfs4_read_stateid_changed(task
, &hdr
->args
))
4596 if (task
->tk_status
> 0)
4597 nfs_invalidate_atime(hdr
->inode
);
4598 return hdr
->pgio_done_cb
? hdr
->pgio_done_cb(task
, hdr
) :
4599 nfs4_read_done_cb(task
, hdr
);
4602 static void nfs4_proc_read_setup(struct nfs_pgio_header
*hdr
,
4603 struct rpc_message
*msg
)
4605 hdr
->timestamp
= jiffies
;
4606 if (!hdr
->pgio_done_cb
)
4607 hdr
->pgio_done_cb
= nfs4_read_done_cb
;
4608 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_READ
];
4609 nfs4_init_sequence(&hdr
->args
.seq_args
, &hdr
->res
.seq_res
, 0);
4612 static int nfs4_proc_pgio_rpc_prepare(struct rpc_task
*task
,
4613 struct nfs_pgio_header
*hdr
)
4615 if (nfs4_setup_sequence(NFS_SERVER(hdr
->inode
)->nfs_client
,
4616 &hdr
->args
.seq_args
,
4620 if (nfs4_set_rw_stateid(&hdr
->args
.stateid
, hdr
->args
.context
,
4621 hdr
->args
.lock_context
,
4622 hdr
->rw_mode
) == -EIO
)
4624 if (unlikely(test_bit(NFS_CONTEXT_BAD
, &hdr
->args
.context
->flags
)))
4629 static int nfs4_write_done_cb(struct rpc_task
*task
,
4630 struct nfs_pgio_header
*hdr
)
4632 struct inode
*inode
= hdr
->inode
;
4634 trace_nfs4_write(hdr
, task
->tk_status
);
4635 if (task
->tk_status
< 0) {
4636 struct nfs4_exception exception
= {
4637 .inode
= hdr
->inode
,
4638 .state
= hdr
->args
.context
->state
,
4639 .stateid
= &hdr
->args
.stateid
,
4641 task
->tk_status
= nfs4_async_handle_exception(task
,
4642 NFS_SERVER(inode
), task
->tk_status
,
4644 if (exception
.retry
) {
4645 rpc_restart_call_prepare(task
);
4649 if (task
->tk_status
>= 0) {
4650 renew_lease(NFS_SERVER(inode
), hdr
->timestamp
);
4651 nfs_writeback_update_inode(hdr
);
4656 static bool nfs4_write_stateid_changed(struct rpc_task
*task
,
4657 struct nfs_pgio_args
*args
)
4660 if (!nfs4_error_stateid_expired(task
->tk_status
) ||
4661 nfs4_stateid_is_current(&args
->stateid
,
4666 rpc_restart_call_prepare(task
);
4670 static int nfs4_write_done(struct rpc_task
*task
, struct nfs_pgio_header
*hdr
)
4672 if (!nfs4_sequence_done(task
, &hdr
->res
.seq_res
))
4674 if (nfs4_write_stateid_changed(task
, &hdr
->args
))
4676 return hdr
->pgio_done_cb
? hdr
->pgio_done_cb(task
, hdr
) :
4677 nfs4_write_done_cb(task
, hdr
);
4681 bool nfs4_write_need_cache_consistency_data(struct nfs_pgio_header
*hdr
)
4683 /* Don't request attributes for pNFS or O_DIRECT writes */
4684 if (hdr
->ds_clp
!= NULL
|| hdr
->dreq
!= NULL
)
4686 /* Otherwise, request attributes if and only if we don't hold
4689 return nfs4_have_delegation(hdr
->inode
, FMODE_READ
) == 0;
4692 static void nfs4_proc_write_setup(struct nfs_pgio_header
*hdr
,
4693 struct rpc_message
*msg
)
4695 struct nfs_server
*server
= NFS_SERVER(hdr
->inode
);
4697 if (!nfs4_write_need_cache_consistency_data(hdr
)) {
4698 hdr
->args
.bitmask
= NULL
;
4699 hdr
->res
.fattr
= NULL
;
4701 hdr
->args
.bitmask
= server
->cache_consistency_bitmask
;
4703 if (!hdr
->pgio_done_cb
)
4704 hdr
->pgio_done_cb
= nfs4_write_done_cb
;
4705 hdr
->res
.server
= server
;
4706 hdr
->timestamp
= jiffies
;
4708 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_WRITE
];
4709 nfs4_init_sequence(&hdr
->args
.seq_args
, &hdr
->res
.seq_res
, 1);
4712 static void nfs4_proc_commit_rpc_prepare(struct rpc_task
*task
, struct nfs_commit_data
*data
)
4714 nfs4_setup_sequence(NFS_SERVER(data
->inode
)->nfs_client
,
4715 &data
->args
.seq_args
,
4720 static int nfs4_commit_done_cb(struct rpc_task
*task
, struct nfs_commit_data
*data
)
4722 struct inode
*inode
= data
->inode
;
4724 trace_nfs4_commit(data
, task
->tk_status
);
4725 if (nfs4_async_handle_error(task
, NFS_SERVER(inode
),
4726 NULL
, NULL
) == -EAGAIN
) {
4727 rpc_restart_call_prepare(task
);
4733 static int nfs4_commit_done(struct rpc_task
*task
, struct nfs_commit_data
*data
)
4735 if (!nfs4_sequence_done(task
, &data
->res
.seq_res
))
4737 return data
->commit_done_cb(task
, data
);
4740 static void nfs4_proc_commit_setup(struct nfs_commit_data
*data
, struct rpc_message
*msg
)
4742 struct nfs_server
*server
= NFS_SERVER(data
->inode
);
4744 if (data
->commit_done_cb
== NULL
)
4745 data
->commit_done_cb
= nfs4_commit_done_cb
;
4746 data
->res
.server
= server
;
4747 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_COMMIT
];
4748 nfs4_init_sequence(&data
->args
.seq_args
, &data
->res
.seq_res
, 1);
4751 struct nfs4_renewdata
{
4752 struct nfs_client
*client
;
4753 unsigned long timestamp
;
4757 * nfs4_proc_async_renew(): This is not one of the nfs_rpc_ops; it is a special
4758 * standalone procedure for queueing an asynchronous RENEW.
4760 static void nfs4_renew_release(void *calldata
)
4762 struct nfs4_renewdata
*data
= calldata
;
4763 struct nfs_client
*clp
= data
->client
;
4765 if (atomic_read(&clp
->cl_count
) > 1)
4766 nfs4_schedule_state_renewal(clp
);
4767 nfs_put_client(clp
);
4771 static void nfs4_renew_done(struct rpc_task
*task
, void *calldata
)
4773 struct nfs4_renewdata
*data
= calldata
;
4774 struct nfs_client
*clp
= data
->client
;
4775 unsigned long timestamp
= data
->timestamp
;
4777 trace_nfs4_renew_async(clp
, task
->tk_status
);
4778 switch (task
->tk_status
) {
4781 case -NFS4ERR_LEASE_MOVED
:
4782 nfs4_schedule_lease_moved_recovery(clp
);
4785 /* Unless we're shutting down, schedule state recovery! */
4786 if (test_bit(NFS_CS_RENEWD
, &clp
->cl_res_state
) == 0)
4788 if (task
->tk_status
!= NFS4ERR_CB_PATH_DOWN
) {
4789 nfs4_schedule_lease_recovery(clp
);
4792 nfs4_schedule_path_down_recovery(clp
);
4794 do_renew_lease(clp
, timestamp
);
4797 static const struct rpc_call_ops nfs4_renew_ops
= {
4798 .rpc_call_done
= nfs4_renew_done
,
4799 .rpc_release
= nfs4_renew_release
,
4802 static int nfs4_proc_async_renew(struct nfs_client
*clp
, struct rpc_cred
*cred
, unsigned renew_flags
)
4804 struct rpc_message msg
= {
4805 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RENEW
],
4809 struct nfs4_renewdata
*data
;
4811 if (renew_flags
== 0)
4813 if (!atomic_inc_not_zero(&clp
->cl_count
))
4815 data
= kmalloc(sizeof(*data
), GFP_NOFS
);
4817 nfs_put_client(clp
);
4821 data
->timestamp
= jiffies
;
4822 return rpc_call_async(clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
,
4823 &nfs4_renew_ops
, data
);
4826 static int nfs4_proc_renew(struct nfs_client
*clp
, struct rpc_cred
*cred
)
4828 struct rpc_message msg
= {
4829 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RENEW
],
4833 unsigned long now
= jiffies
;
4836 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
4839 do_renew_lease(clp
, now
);
4843 static inline int nfs4_server_supports_acls(struct nfs_server
*server
)
4845 return server
->caps
& NFS_CAP_ACLS
;
4848 /* Assuming that XATTR_SIZE_MAX is a multiple of PAGE_SIZE, and that
4849 * it's OK to put sizeof(void) * (XATTR_SIZE_MAX/PAGE_SIZE) bytes on
4852 #define NFS4ACL_MAXPAGES DIV_ROUND_UP(XATTR_SIZE_MAX, PAGE_SIZE)
4854 static int buf_to_pages_noslab(const void *buf
, size_t buflen
,
4855 struct page
**pages
)
4857 struct page
*newpage
, **spages
;
4863 len
= min_t(size_t, PAGE_SIZE
, buflen
);
4864 newpage
= alloc_page(GFP_KERNEL
);
4866 if (newpage
== NULL
)
4868 memcpy(page_address(newpage
), buf
, len
);
4873 } while (buflen
!= 0);
4879 __free_page(spages
[rc
-1]);
4883 struct nfs4_cached_acl
{
4889 static void nfs4_set_cached_acl(struct inode
*inode
, struct nfs4_cached_acl
*acl
)
4891 struct nfs_inode
*nfsi
= NFS_I(inode
);
4893 spin_lock(&inode
->i_lock
);
4894 kfree(nfsi
->nfs4_acl
);
4895 nfsi
->nfs4_acl
= acl
;
4896 spin_unlock(&inode
->i_lock
);
4899 static void nfs4_zap_acl_attr(struct inode
*inode
)
4901 nfs4_set_cached_acl(inode
, NULL
);
4904 static inline ssize_t
nfs4_read_cached_acl(struct inode
*inode
, char *buf
, size_t buflen
)
4906 struct nfs_inode
*nfsi
= NFS_I(inode
);
4907 struct nfs4_cached_acl
*acl
;
4910 spin_lock(&inode
->i_lock
);
4911 acl
= nfsi
->nfs4_acl
;
4914 if (buf
== NULL
) /* user is just asking for length */
4916 if (acl
->cached
== 0)
4918 ret
= -ERANGE
; /* see getxattr(2) man page */
4919 if (acl
->len
> buflen
)
4921 memcpy(buf
, acl
->data
, acl
->len
);
4925 spin_unlock(&inode
->i_lock
);
4929 static void nfs4_write_cached_acl(struct inode
*inode
, struct page
**pages
, size_t pgbase
, size_t acl_len
)
4931 struct nfs4_cached_acl
*acl
;
4932 size_t buflen
= sizeof(*acl
) + acl_len
;
4934 if (buflen
<= PAGE_SIZE
) {
4935 acl
= kmalloc(buflen
, GFP_KERNEL
);
4939 _copy_from_pages(acl
->data
, pages
, pgbase
, acl_len
);
4941 acl
= kmalloc(sizeof(*acl
), GFP_KERNEL
);
4948 nfs4_set_cached_acl(inode
, acl
);
4952 * The getxattr API returns the required buffer length when called with a
4953 * NULL buf. The NFSv4 acl tool then calls getxattr again after allocating
4954 * the required buf. On a NULL buf, we send a page of data to the server
4955 * guessing that the ACL request can be serviced by a page. If so, we cache
4956 * up to the page of ACL data, and the 2nd call to getxattr is serviced by
4957 * the cache. If not so, we throw away the page, and cache the required
4958 * length. The next getxattr call will then produce another round trip to
4959 * the server, this time with the input buf of the required size.
4961 static ssize_t
__nfs4_get_acl_uncached(struct inode
*inode
, void *buf
, size_t buflen
)
4963 struct page
*pages
[NFS4ACL_MAXPAGES
+ 1] = {NULL
, };
4964 struct nfs_getaclargs args
= {
4965 .fh
= NFS_FH(inode
),
4969 struct nfs_getaclres res
= {
4972 struct rpc_message msg
= {
4973 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GETACL
],
4977 unsigned int npages
= DIV_ROUND_UP(buflen
, PAGE_SIZE
) + 1;
4978 int ret
= -ENOMEM
, i
;
4980 if (npages
> ARRAY_SIZE(pages
))
4983 for (i
= 0; i
< npages
; i
++) {
4984 pages
[i
] = alloc_page(GFP_KERNEL
);
4989 /* for decoding across pages */
4990 res
.acl_scratch
= alloc_page(GFP_KERNEL
);
4991 if (!res
.acl_scratch
)
4994 args
.acl_len
= npages
* PAGE_SIZE
;
4996 dprintk("%s buf %p buflen %zu npages %d args.acl_len %zu\n",
4997 __func__
, buf
, buflen
, npages
, args
.acl_len
);
4998 ret
= nfs4_call_sync(NFS_SERVER(inode
)->client
, NFS_SERVER(inode
),
4999 &msg
, &args
.seq_args
, &res
.seq_res
, 0);
5003 /* Handle the case where the passed-in buffer is too short */
5004 if (res
.acl_flags
& NFS4_ACL_TRUNC
) {
5005 /* Did the user only issue a request for the acl length? */
5011 nfs4_write_cached_acl(inode
, pages
, res
.acl_data_offset
, res
.acl_len
);
5013 if (res
.acl_len
> buflen
) {
5017 _copy_from_pages(buf
, pages
, res
.acl_data_offset
, res
.acl_len
);
5022 for (i
= 0; i
< npages
; i
++)
5024 __free_page(pages
[i
]);
5025 if (res
.acl_scratch
)
5026 __free_page(res
.acl_scratch
);
5030 static ssize_t
nfs4_get_acl_uncached(struct inode
*inode
, void *buf
, size_t buflen
)
5032 struct nfs4_exception exception
= { };
5035 ret
= __nfs4_get_acl_uncached(inode
, buf
, buflen
);
5036 trace_nfs4_get_acl(inode
, ret
);
5039 ret
= nfs4_handle_exception(NFS_SERVER(inode
), ret
, &exception
);
5040 } while (exception
.retry
);
5044 static ssize_t
nfs4_proc_get_acl(struct inode
*inode
, void *buf
, size_t buflen
)
5046 struct nfs_server
*server
= NFS_SERVER(inode
);
5049 if (!nfs4_server_supports_acls(server
))
5051 ret
= nfs_revalidate_inode(server
, inode
);
5054 if (NFS_I(inode
)->cache_validity
& NFS_INO_INVALID_ACL
)
5055 nfs_zap_acl_cache(inode
);
5056 ret
= nfs4_read_cached_acl(inode
, buf
, buflen
);
5058 /* -ENOENT is returned if there is no ACL or if there is an ACL
5059 * but no cached acl data, just the acl length */
5061 return nfs4_get_acl_uncached(inode
, buf
, buflen
);
5064 static int __nfs4_proc_set_acl(struct inode
*inode
, const void *buf
, size_t buflen
)
5066 struct nfs_server
*server
= NFS_SERVER(inode
);
5067 struct page
*pages
[NFS4ACL_MAXPAGES
];
5068 struct nfs_setaclargs arg
= {
5069 .fh
= NFS_FH(inode
),
5073 struct nfs_setaclres res
;
5074 struct rpc_message msg
= {
5075 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETACL
],
5079 unsigned int npages
= DIV_ROUND_UP(buflen
, PAGE_SIZE
);
5082 if (!nfs4_server_supports_acls(server
))
5084 if (npages
> ARRAY_SIZE(pages
))
5086 i
= buf_to_pages_noslab(buf
, buflen
, arg
.acl_pages
);
5089 nfs4_inode_return_delegation(inode
);
5090 ret
= nfs4_call_sync(server
->client
, server
, &msg
, &arg
.seq_args
, &res
.seq_res
, 1);
5093 * Free each page after tx, so the only ref left is
5094 * held by the network stack
5097 put_page(pages
[i
-1]);
5100 * Acl update can result in inode attribute update.
5101 * so mark the attribute cache invalid.
5103 spin_lock(&inode
->i_lock
);
5104 NFS_I(inode
)->cache_validity
|= NFS_INO_INVALID_ATTR
;
5105 spin_unlock(&inode
->i_lock
);
5106 nfs_access_zap_cache(inode
);
5107 nfs_zap_acl_cache(inode
);
5111 static int nfs4_proc_set_acl(struct inode
*inode
, const void *buf
, size_t buflen
)
5113 struct nfs4_exception exception
= { };
5116 err
= __nfs4_proc_set_acl(inode
, buf
, buflen
);
5117 trace_nfs4_set_acl(inode
, err
);
5118 err
= nfs4_handle_exception(NFS_SERVER(inode
), err
,
5120 } while (exception
.retry
);
5124 #ifdef CONFIG_NFS_V4_SECURITY_LABEL
5125 static int _nfs4_get_security_label(struct inode
*inode
, void *buf
,
5128 struct nfs_server
*server
= NFS_SERVER(inode
);
5129 struct nfs_fattr fattr
;
5130 struct nfs4_label label
= {0, 0, buflen
, buf
};
5132 u32 bitmask
[3] = { 0, 0, FATTR4_WORD2_SECURITY_LABEL
};
5133 struct nfs4_getattr_arg arg
= {
5134 .fh
= NFS_FH(inode
),
5137 struct nfs4_getattr_res res
= {
5142 struct rpc_message msg
= {
5143 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GETATTR
],
5149 nfs_fattr_init(&fattr
);
5151 ret
= nfs4_call_sync(server
->client
, server
, &msg
, &arg
.seq_args
, &res
.seq_res
, 0);
5154 if (!(fattr
.valid
& NFS_ATTR_FATTR_V4_SECURITY_LABEL
))
5156 if (buflen
< label
.len
)
5161 static int nfs4_get_security_label(struct inode
*inode
, void *buf
,
5164 struct nfs4_exception exception
= { };
5167 if (!nfs_server_capable(inode
, NFS_CAP_SECURITY_LABEL
))
5171 err
= _nfs4_get_security_label(inode
, buf
, buflen
);
5172 trace_nfs4_get_security_label(inode
, err
);
5173 err
= nfs4_handle_exception(NFS_SERVER(inode
), err
,
5175 } while (exception
.retry
);
5179 static int _nfs4_do_set_security_label(struct inode
*inode
,
5180 struct nfs4_label
*ilabel
,
5181 struct nfs_fattr
*fattr
,
5182 struct nfs4_label
*olabel
)
5185 struct iattr sattr
= {0};
5186 struct nfs_server
*server
= NFS_SERVER(inode
);
5187 const u32 bitmask
[3] = { 0, 0, FATTR4_WORD2_SECURITY_LABEL
};
5188 struct nfs_setattrargs arg
= {
5189 .fh
= NFS_FH(inode
),
5195 struct nfs_setattrres res
= {
5200 struct rpc_message msg
= {
5201 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETATTR
],
5207 nfs4_stateid_copy(&arg
.stateid
, &zero_stateid
);
5209 status
= nfs4_call_sync(server
->client
, server
, &msg
, &arg
.seq_args
, &res
.seq_res
, 1);
5211 dprintk("%s failed: %d\n", __func__
, status
);
5216 static int nfs4_do_set_security_label(struct inode
*inode
,
5217 struct nfs4_label
*ilabel
,
5218 struct nfs_fattr
*fattr
,
5219 struct nfs4_label
*olabel
)
5221 struct nfs4_exception exception
= { };
5225 err
= _nfs4_do_set_security_label(inode
, ilabel
,
5227 trace_nfs4_set_security_label(inode
, err
);
5228 err
= nfs4_handle_exception(NFS_SERVER(inode
), err
,
5230 } while (exception
.retry
);
5235 nfs4_set_security_label(struct inode
*inode
, const void *buf
, size_t buflen
)
5237 struct nfs4_label ilabel
, *olabel
= NULL
;
5238 struct nfs_fattr fattr
;
5239 struct rpc_cred
*cred
;
5242 if (!nfs_server_capable(inode
, NFS_CAP_SECURITY_LABEL
))
5245 nfs_fattr_init(&fattr
);
5249 ilabel
.label
= (char *)buf
;
5250 ilabel
.len
= buflen
;
5252 cred
= rpc_lookup_cred();
5254 return PTR_ERR(cred
);
5256 olabel
= nfs4_label_alloc(NFS_SERVER(inode
), GFP_KERNEL
);
5257 if (IS_ERR(olabel
)) {
5258 status
= -PTR_ERR(olabel
);
5262 status
= nfs4_do_set_security_label(inode
, &ilabel
, &fattr
, olabel
);
5264 nfs_setsecurity(inode
, &fattr
, olabel
);
5266 nfs4_label_free(olabel
);
5271 #endif /* CONFIG_NFS_V4_SECURITY_LABEL */
5274 static void nfs4_init_boot_verifier(const struct nfs_client
*clp
,
5275 nfs4_verifier
*bootverf
)
5279 if (test_bit(NFS4CLNT_PURGE_STATE
, &clp
->cl_state
)) {
5280 /* An impossible timestamp guarantees this value
5281 * will never match a generated boot time. */
5282 verf
[0] = cpu_to_be32(U32_MAX
);
5283 verf
[1] = cpu_to_be32(U32_MAX
);
5285 struct nfs_net
*nn
= net_generic(clp
->cl_net
, nfs_net_id
);
5286 u64 ns
= ktime_to_ns(nn
->boot_time
);
5288 verf
[0] = cpu_to_be32(ns
>> 32);
5289 verf
[1] = cpu_to_be32(ns
);
5291 memcpy(bootverf
->data
, verf
, sizeof(bootverf
->data
));
5295 nfs4_init_nonuniform_client_string(struct nfs_client
*clp
)
5300 if (clp
->cl_owner_id
!= NULL
)
5304 len
= 14 + strlen(clp
->cl_ipaddr
) + 1 +
5305 strlen(rpc_peeraddr2str(clp
->cl_rpcclient
, RPC_DISPLAY_ADDR
)) +
5307 strlen(rpc_peeraddr2str(clp
->cl_rpcclient
, RPC_DISPLAY_PROTO
)) +
5311 if (len
> NFS4_OPAQUE_LIMIT
+ 1)
5315 * Since this string is allocated at mount time, and held until the
5316 * nfs_client is destroyed, we can use GFP_KERNEL here w/o worrying
5317 * about a memory-reclaim deadlock.
5319 str
= kmalloc(len
, GFP_KERNEL
);
5324 scnprintf(str
, len
, "Linux NFSv4.0 %s/%s %s",
5326 rpc_peeraddr2str(clp
->cl_rpcclient
, RPC_DISPLAY_ADDR
),
5327 rpc_peeraddr2str(clp
->cl_rpcclient
, RPC_DISPLAY_PROTO
));
5330 clp
->cl_owner_id
= str
;
5335 nfs4_init_uniquifier_client_string(struct nfs_client
*clp
)
5340 len
= 10 + 10 + 1 + 10 + 1 +
5341 strlen(nfs4_client_id_uniquifier
) + 1 +
5342 strlen(clp
->cl_rpcclient
->cl_nodename
) + 1;
5344 if (len
> NFS4_OPAQUE_LIMIT
+ 1)
5348 * Since this string is allocated at mount time, and held until the
5349 * nfs_client is destroyed, we can use GFP_KERNEL here w/o worrying
5350 * about a memory-reclaim deadlock.
5352 str
= kmalloc(len
, GFP_KERNEL
);
5356 scnprintf(str
, len
, "Linux NFSv%u.%u %s/%s",
5357 clp
->rpc_ops
->version
, clp
->cl_minorversion
,
5358 nfs4_client_id_uniquifier
,
5359 clp
->cl_rpcclient
->cl_nodename
);
5360 clp
->cl_owner_id
= str
;
5365 nfs4_init_uniform_client_string(struct nfs_client
*clp
)
5370 if (clp
->cl_owner_id
!= NULL
)
5373 if (nfs4_client_id_uniquifier
[0] != '\0')
5374 return nfs4_init_uniquifier_client_string(clp
);
5376 len
= 10 + 10 + 1 + 10 + 1 +
5377 strlen(clp
->cl_rpcclient
->cl_nodename
) + 1;
5379 if (len
> NFS4_OPAQUE_LIMIT
+ 1)
5383 * Since this string is allocated at mount time, and held until the
5384 * nfs_client is destroyed, we can use GFP_KERNEL here w/o worrying
5385 * about a memory-reclaim deadlock.
5387 str
= kmalloc(len
, GFP_KERNEL
);
5391 scnprintf(str
, len
, "Linux NFSv%u.%u %s",
5392 clp
->rpc_ops
->version
, clp
->cl_minorversion
,
5393 clp
->cl_rpcclient
->cl_nodename
);
5394 clp
->cl_owner_id
= str
;
5399 * nfs4_callback_up_net() starts only "tcp" and "tcp6" callback
5400 * services. Advertise one based on the address family of the
5404 nfs4_init_callback_netid(const struct nfs_client
*clp
, char *buf
, size_t len
)
5406 if (strchr(clp
->cl_ipaddr
, ':') != NULL
)
5407 return scnprintf(buf
, len
, "tcp6");
5409 return scnprintf(buf
, len
, "tcp");
5412 static void nfs4_setclientid_done(struct rpc_task
*task
, void *calldata
)
5414 struct nfs4_setclientid
*sc
= calldata
;
5416 if (task
->tk_status
== 0)
5417 sc
->sc_cred
= get_rpccred(task
->tk_rqstp
->rq_cred
);
5420 static const struct rpc_call_ops nfs4_setclientid_ops
= {
5421 .rpc_call_done
= nfs4_setclientid_done
,
5425 * nfs4_proc_setclientid - Negotiate client ID
5426 * @clp: state data structure
5427 * @program: RPC program for NFSv4 callback service
5428 * @port: IP port number for NFS4 callback service
5429 * @cred: RPC credential to use for this call
5430 * @res: where to place the result
5432 * Returns zero, a negative errno, or a negative NFS4ERR status code.
5434 int nfs4_proc_setclientid(struct nfs_client
*clp
, u32 program
,
5435 unsigned short port
, struct rpc_cred
*cred
,
5436 struct nfs4_setclientid_res
*res
)
5438 nfs4_verifier sc_verifier
;
5439 struct nfs4_setclientid setclientid
= {
5440 .sc_verifier
= &sc_verifier
,
5444 struct rpc_message msg
= {
5445 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETCLIENTID
],
5446 .rpc_argp
= &setclientid
,
5450 struct rpc_task
*task
;
5451 struct rpc_task_setup task_setup_data
= {
5452 .rpc_client
= clp
->cl_rpcclient
,
5453 .rpc_message
= &msg
,
5454 .callback_ops
= &nfs4_setclientid_ops
,
5455 .callback_data
= &setclientid
,
5456 .flags
= RPC_TASK_TIMEOUT
,
5460 /* nfs_client_id4 */
5461 nfs4_init_boot_verifier(clp
, &sc_verifier
);
5463 if (test_bit(NFS_CS_MIGRATION
, &clp
->cl_flags
))
5464 status
= nfs4_init_uniform_client_string(clp
);
5466 status
= nfs4_init_nonuniform_client_string(clp
);
5472 setclientid
.sc_netid_len
=
5473 nfs4_init_callback_netid(clp
,
5474 setclientid
.sc_netid
,
5475 sizeof(setclientid
.sc_netid
));
5476 setclientid
.sc_uaddr_len
= scnprintf(setclientid
.sc_uaddr
,
5477 sizeof(setclientid
.sc_uaddr
), "%s.%u.%u",
5478 clp
->cl_ipaddr
, port
>> 8, port
& 255);
5480 dprintk("NFS call setclientid auth=%s, '%s'\n",
5481 clp
->cl_rpcclient
->cl_auth
->au_ops
->au_name
,
5483 task
= rpc_run_task(&task_setup_data
);
5485 status
= PTR_ERR(task
);
5488 status
= task
->tk_status
;
5489 if (setclientid
.sc_cred
) {
5490 clp
->cl_acceptor
= rpcauth_stringify_acceptor(setclientid
.sc_cred
);
5491 put_rpccred(setclientid
.sc_cred
);
5495 trace_nfs4_setclientid(clp
, status
);
5496 dprintk("NFS reply setclientid: %d\n", status
);
5501 * nfs4_proc_setclientid_confirm - Confirm client ID
5502 * @clp: state data structure
5503 * @res: result of a previous SETCLIENTID
5504 * @cred: RPC credential to use for this call
5506 * Returns zero, a negative errno, or a negative NFS4ERR status code.
5508 int nfs4_proc_setclientid_confirm(struct nfs_client
*clp
,
5509 struct nfs4_setclientid_res
*arg
,
5510 struct rpc_cred
*cred
)
5512 struct rpc_message msg
= {
5513 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETCLIENTID_CONFIRM
],
5519 dprintk("NFS call setclientid_confirm auth=%s, (client ID %llx)\n",
5520 clp
->cl_rpcclient
->cl_auth
->au_ops
->au_name
,
5522 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
5523 trace_nfs4_setclientid_confirm(clp
, status
);
5524 dprintk("NFS reply setclientid_confirm: %d\n", status
);
5528 struct nfs4_delegreturndata
{
5529 struct nfs4_delegreturnargs args
;
5530 struct nfs4_delegreturnres res
;
5532 nfs4_stateid stateid
;
5533 unsigned long timestamp
;
5535 struct nfs4_layoutreturn_args arg
;
5536 struct nfs4_layoutreturn_res res
;
5537 struct nfs4_xdr_opaque_data ld_private
;
5541 struct nfs_fattr fattr
;
5543 struct inode
*inode
;
5546 static void nfs4_delegreturn_done(struct rpc_task
*task
, void *calldata
)
5548 struct nfs4_delegreturndata
*data
= calldata
;
5550 if (!nfs4_sequence_done(task
, &data
->res
.seq_res
))
5553 trace_nfs4_delegreturn_exit(&data
->args
, &data
->res
, task
->tk_status
);
5555 /* Handle Layoutreturn errors */
5556 if (data
->args
.lr_args
&& task
->tk_status
!= 0) {
5557 switch(data
->res
.lr_ret
) {
5559 data
->res
.lr_ret
= -NFS4ERR_NOMATCHING_LAYOUT
;
5562 data
->args
.lr_args
= NULL
;
5563 data
->res
.lr_res
= NULL
;
5565 case -NFS4ERR_ADMIN_REVOKED
:
5566 case -NFS4ERR_DELEG_REVOKED
:
5567 case -NFS4ERR_EXPIRED
:
5568 case -NFS4ERR_BAD_STATEID
:
5569 case -NFS4ERR_OLD_STATEID
:
5570 case -NFS4ERR_UNKNOWN_LAYOUTTYPE
:
5571 case -NFS4ERR_WRONG_CRED
:
5572 data
->args
.lr_args
= NULL
;
5573 data
->res
.lr_res
= NULL
;
5574 data
->res
.lr_ret
= 0;
5575 rpc_restart_call_prepare(task
);
5580 switch (task
->tk_status
) {
5582 renew_lease(data
->res
.server
, data
->timestamp
);
5584 case -NFS4ERR_ADMIN_REVOKED
:
5585 case -NFS4ERR_DELEG_REVOKED
:
5586 case -NFS4ERR_EXPIRED
:
5587 nfs4_free_revoked_stateid(data
->res
.server
,
5589 task
->tk_msg
.rpc_cred
);
5590 case -NFS4ERR_BAD_STATEID
:
5591 case -NFS4ERR_OLD_STATEID
:
5592 case -NFS4ERR_STALE_STATEID
:
5593 task
->tk_status
= 0;
5595 case -NFS4ERR_ACCESS
:
5596 if (data
->args
.bitmask
) {
5597 data
->args
.bitmask
= NULL
;
5598 data
->res
.fattr
= NULL
;
5599 task
->tk_status
= 0;
5600 rpc_restart_call_prepare(task
);
5604 if (nfs4_async_handle_error(task
, data
->res
.server
,
5605 NULL
, NULL
) == -EAGAIN
) {
5606 rpc_restart_call_prepare(task
);
5610 data
->rpc_status
= task
->tk_status
;
5613 static void nfs4_delegreturn_release(void *calldata
)
5615 struct nfs4_delegreturndata
*data
= calldata
;
5616 struct inode
*inode
= data
->inode
;
5620 pnfs_roc_release(&data
->lr
.arg
, &data
->lr
.res
,
5622 nfs_post_op_update_inode_force_wcc(inode
, &data
->fattr
);
5623 nfs_iput_and_deactive(inode
);
5628 static void nfs4_delegreturn_prepare(struct rpc_task
*task
, void *data
)
5630 struct nfs4_delegreturndata
*d_data
;
5632 d_data
= (struct nfs4_delegreturndata
*)data
;
5634 if (!d_data
->lr
.roc
&& nfs4_wait_on_layoutreturn(d_data
->inode
, task
))
5637 nfs4_setup_sequence(d_data
->res
.server
->nfs_client
,
5638 &d_data
->args
.seq_args
,
5639 &d_data
->res
.seq_res
,
5643 static const struct rpc_call_ops nfs4_delegreturn_ops
= {
5644 .rpc_call_prepare
= nfs4_delegreturn_prepare
,
5645 .rpc_call_done
= nfs4_delegreturn_done
,
5646 .rpc_release
= nfs4_delegreturn_release
,
5649 static int _nfs4_proc_delegreturn(struct inode
*inode
, struct rpc_cred
*cred
, const nfs4_stateid
*stateid
, int issync
)
5651 struct nfs4_delegreturndata
*data
;
5652 struct nfs_server
*server
= NFS_SERVER(inode
);
5653 struct rpc_task
*task
;
5654 struct rpc_message msg
= {
5655 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_DELEGRETURN
],
5658 struct rpc_task_setup task_setup_data
= {
5659 .rpc_client
= server
->client
,
5660 .rpc_message
= &msg
,
5661 .callback_ops
= &nfs4_delegreturn_ops
,
5662 .flags
= RPC_TASK_ASYNC
,
5666 data
= kzalloc(sizeof(*data
), GFP_NOFS
);
5669 nfs4_init_sequence(&data
->args
.seq_args
, &data
->res
.seq_res
, 1);
5671 nfs4_state_protect(server
->nfs_client
,
5672 NFS_SP4_MACH_CRED_CLEANUP
,
5673 &task_setup_data
.rpc_client
, &msg
);
5675 data
->args
.fhandle
= &data
->fh
;
5676 data
->args
.stateid
= &data
->stateid
;
5677 data
->args
.bitmask
= server
->cache_consistency_bitmask
;
5678 nfs_copy_fh(&data
->fh
, NFS_FH(inode
));
5679 nfs4_stateid_copy(&data
->stateid
, stateid
);
5680 data
->res
.fattr
= &data
->fattr
;
5681 data
->res
.server
= server
;
5682 data
->res
.lr_ret
= -NFS4ERR_NOMATCHING_LAYOUT
;
5683 data
->lr
.arg
.ld_private
= &data
->lr
.ld_private
;
5684 nfs_fattr_init(data
->res
.fattr
);
5685 data
->timestamp
= jiffies
;
5686 data
->rpc_status
= 0;
5687 data
->lr
.roc
= pnfs_roc(inode
, &data
->lr
.arg
, &data
->lr
.res
, cred
);
5688 data
->inode
= nfs_igrab_and_active(inode
);
5691 data
->args
.lr_args
= &data
->lr
.arg
;
5692 data
->res
.lr_res
= &data
->lr
.res
;
5694 } else if (data
->lr
.roc
) {
5695 pnfs_roc_release(&data
->lr
.arg
, &data
->lr
.res
, 0);
5696 data
->lr
.roc
= false;
5699 task_setup_data
.callback_data
= data
;
5700 msg
.rpc_argp
= &data
->args
;
5701 msg
.rpc_resp
= &data
->res
;
5702 task
= rpc_run_task(&task_setup_data
);
5704 return PTR_ERR(task
);
5707 status
= rpc_wait_for_completion_task(task
);
5710 status
= data
->rpc_status
;
5716 int nfs4_proc_delegreturn(struct inode
*inode
, struct rpc_cred
*cred
, const nfs4_stateid
*stateid
, int issync
)
5718 struct nfs_server
*server
= NFS_SERVER(inode
);
5719 struct nfs4_exception exception
= { };
5722 err
= _nfs4_proc_delegreturn(inode
, cred
, stateid
, issync
);
5723 trace_nfs4_delegreturn(inode
, stateid
, err
);
5725 case -NFS4ERR_STALE_STATEID
:
5726 case -NFS4ERR_EXPIRED
:
5730 err
= nfs4_handle_exception(server
, err
, &exception
);
5731 } while (exception
.retry
);
5735 static int _nfs4_proc_getlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
5737 struct inode
*inode
= state
->inode
;
5738 struct nfs_server
*server
= NFS_SERVER(inode
);
5739 struct nfs_client
*clp
= server
->nfs_client
;
5740 struct nfs_lockt_args arg
= {
5741 .fh
= NFS_FH(inode
),
5744 struct nfs_lockt_res res
= {
5747 struct rpc_message msg
= {
5748 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOCKT
],
5751 .rpc_cred
= state
->owner
->so_cred
,
5753 struct nfs4_lock_state
*lsp
;
5756 arg
.lock_owner
.clientid
= clp
->cl_clientid
;
5757 status
= nfs4_set_lock_state(state
, request
);
5760 lsp
= request
->fl_u
.nfs4_fl
.owner
;
5761 arg
.lock_owner
.id
= lsp
->ls_seqid
.owner_id
;
5762 arg
.lock_owner
.s_dev
= server
->s_dev
;
5763 status
= nfs4_call_sync(server
->client
, server
, &msg
, &arg
.seq_args
, &res
.seq_res
, 1);
5766 request
->fl_type
= F_UNLCK
;
5768 case -NFS4ERR_DENIED
:
5771 request
->fl_ops
->fl_release_private(request
);
5772 request
->fl_ops
= NULL
;
5777 static int nfs4_proc_getlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
5779 struct nfs4_exception exception
= { };
5783 err
= _nfs4_proc_getlk(state
, cmd
, request
);
5784 trace_nfs4_get_lock(request
, state
, cmd
, err
);
5785 err
= nfs4_handle_exception(NFS_SERVER(state
->inode
), err
,
5787 } while (exception
.retry
);
5791 struct nfs4_unlockdata
{
5792 struct nfs_locku_args arg
;
5793 struct nfs_locku_res res
;
5794 struct nfs4_lock_state
*lsp
;
5795 struct nfs_open_context
*ctx
;
5796 struct nfs_lock_context
*l_ctx
;
5797 struct file_lock fl
;
5798 struct nfs_server
*server
;
5799 unsigned long timestamp
;
5802 static struct nfs4_unlockdata
*nfs4_alloc_unlockdata(struct file_lock
*fl
,
5803 struct nfs_open_context
*ctx
,
5804 struct nfs4_lock_state
*lsp
,
5805 struct nfs_seqid
*seqid
)
5807 struct nfs4_unlockdata
*p
;
5808 struct inode
*inode
= lsp
->ls_state
->inode
;
5810 p
= kzalloc(sizeof(*p
), GFP_NOFS
);
5813 p
->arg
.fh
= NFS_FH(inode
);
5815 p
->arg
.seqid
= seqid
;
5816 p
->res
.seqid
= seqid
;
5818 atomic_inc(&lsp
->ls_count
);
5819 /* Ensure we don't close file until we're done freeing locks! */
5820 p
->ctx
= get_nfs_open_context(ctx
);
5821 p
->l_ctx
= nfs_get_lock_context(ctx
);
5822 memcpy(&p
->fl
, fl
, sizeof(p
->fl
));
5823 p
->server
= NFS_SERVER(inode
);
5827 static void nfs4_locku_release_calldata(void *data
)
5829 struct nfs4_unlockdata
*calldata
= data
;
5830 nfs_free_seqid(calldata
->arg
.seqid
);
5831 nfs4_put_lock_state(calldata
->lsp
);
5832 nfs_put_lock_context(calldata
->l_ctx
);
5833 put_nfs_open_context(calldata
->ctx
);
5837 static void nfs4_locku_done(struct rpc_task
*task
, void *data
)
5839 struct nfs4_unlockdata
*calldata
= data
;
5841 if (!nfs4_sequence_done(task
, &calldata
->res
.seq_res
))
5843 switch (task
->tk_status
) {
5845 renew_lease(calldata
->server
, calldata
->timestamp
);
5846 locks_lock_inode_wait(calldata
->lsp
->ls_state
->inode
, &calldata
->fl
);
5847 if (nfs4_update_lock_stateid(calldata
->lsp
,
5848 &calldata
->res
.stateid
))
5850 case -NFS4ERR_ADMIN_REVOKED
:
5851 case -NFS4ERR_EXPIRED
:
5852 nfs4_free_revoked_stateid(calldata
->server
,
5853 &calldata
->arg
.stateid
,
5854 task
->tk_msg
.rpc_cred
);
5855 case -NFS4ERR_BAD_STATEID
:
5856 case -NFS4ERR_OLD_STATEID
:
5857 case -NFS4ERR_STALE_STATEID
:
5858 if (!nfs4_stateid_match(&calldata
->arg
.stateid
,
5859 &calldata
->lsp
->ls_stateid
))
5860 rpc_restart_call_prepare(task
);
5863 if (nfs4_async_handle_error(task
, calldata
->server
,
5864 NULL
, NULL
) == -EAGAIN
)
5865 rpc_restart_call_prepare(task
);
5867 nfs_release_seqid(calldata
->arg
.seqid
);
5870 static void nfs4_locku_prepare(struct rpc_task
*task
, void *data
)
5872 struct nfs4_unlockdata
*calldata
= data
;
5874 if (test_bit(NFS_CONTEXT_UNLOCK
, &calldata
->l_ctx
->open_context
->flags
) &&
5875 nfs_async_iocounter_wait(task
, calldata
->l_ctx
))
5878 if (nfs_wait_on_sequence(calldata
->arg
.seqid
, task
) != 0)
5880 nfs4_stateid_copy(&calldata
->arg
.stateid
, &calldata
->lsp
->ls_stateid
);
5881 if (test_bit(NFS_LOCK_INITIALIZED
, &calldata
->lsp
->ls_flags
) == 0) {
5882 /* Note: exit _without_ running nfs4_locku_done */
5885 calldata
->timestamp
= jiffies
;
5886 if (nfs4_setup_sequence(calldata
->server
->nfs_client
,
5887 &calldata
->arg
.seq_args
,
5888 &calldata
->res
.seq_res
,
5890 nfs_release_seqid(calldata
->arg
.seqid
);
5893 task
->tk_action
= NULL
;
5895 nfs4_sequence_done(task
, &calldata
->res
.seq_res
);
5898 static const struct rpc_call_ops nfs4_locku_ops
= {
5899 .rpc_call_prepare
= nfs4_locku_prepare
,
5900 .rpc_call_done
= nfs4_locku_done
,
5901 .rpc_release
= nfs4_locku_release_calldata
,
5904 static struct rpc_task
*nfs4_do_unlck(struct file_lock
*fl
,
5905 struct nfs_open_context
*ctx
,
5906 struct nfs4_lock_state
*lsp
,
5907 struct nfs_seqid
*seqid
)
5909 struct nfs4_unlockdata
*data
;
5910 struct rpc_message msg
= {
5911 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOCKU
],
5912 .rpc_cred
= ctx
->cred
,
5914 struct rpc_task_setup task_setup_data
= {
5915 .rpc_client
= NFS_CLIENT(lsp
->ls_state
->inode
),
5916 .rpc_message
= &msg
,
5917 .callback_ops
= &nfs4_locku_ops
,
5918 .workqueue
= nfsiod_workqueue
,
5919 .flags
= RPC_TASK_ASYNC
,
5922 nfs4_state_protect(NFS_SERVER(lsp
->ls_state
->inode
)->nfs_client
,
5923 NFS_SP4_MACH_CRED_CLEANUP
, &task_setup_data
.rpc_client
, &msg
);
5925 /* Ensure this is an unlock - when canceling a lock, the
5926 * canceled lock is passed in, and it won't be an unlock.
5928 fl
->fl_type
= F_UNLCK
;
5929 if (fl
->fl_flags
& FL_CLOSE
)
5930 set_bit(NFS_CONTEXT_UNLOCK
, &ctx
->flags
);
5932 data
= nfs4_alloc_unlockdata(fl
, ctx
, lsp
, seqid
);
5934 nfs_free_seqid(seqid
);
5935 return ERR_PTR(-ENOMEM
);
5938 nfs4_init_sequence(&data
->arg
.seq_args
, &data
->res
.seq_res
, 1);
5939 msg
.rpc_argp
= &data
->arg
;
5940 msg
.rpc_resp
= &data
->res
;
5941 task_setup_data
.callback_data
= data
;
5942 return rpc_run_task(&task_setup_data
);
5945 static int nfs4_proc_unlck(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
5947 struct inode
*inode
= state
->inode
;
5948 struct nfs4_state_owner
*sp
= state
->owner
;
5949 struct nfs_inode
*nfsi
= NFS_I(inode
);
5950 struct nfs_seqid
*seqid
;
5951 struct nfs4_lock_state
*lsp
;
5952 struct rpc_task
*task
;
5953 struct nfs_seqid
*(*alloc_seqid
)(struct nfs_seqid_counter
*, gfp_t
);
5955 unsigned char fl_flags
= request
->fl_flags
;
5957 status
= nfs4_set_lock_state(state
, request
);
5958 /* Unlock _before_ we do the RPC call */
5959 request
->fl_flags
|= FL_EXISTS
;
5960 /* Exclude nfs_delegation_claim_locks() */
5961 mutex_lock(&sp
->so_delegreturn_mutex
);
5962 /* Exclude nfs4_reclaim_open_stateid() - note nesting! */
5963 down_read(&nfsi
->rwsem
);
5964 if (locks_lock_inode_wait(inode
, request
) == -ENOENT
) {
5965 up_read(&nfsi
->rwsem
);
5966 mutex_unlock(&sp
->so_delegreturn_mutex
);
5969 up_read(&nfsi
->rwsem
);
5970 mutex_unlock(&sp
->so_delegreturn_mutex
);
5973 /* Is this a delegated lock? */
5974 lsp
= request
->fl_u
.nfs4_fl
.owner
;
5975 if (test_bit(NFS_LOCK_INITIALIZED
, &lsp
->ls_flags
) == 0)
5977 alloc_seqid
= NFS_SERVER(inode
)->nfs_client
->cl_mvops
->alloc_seqid
;
5978 seqid
= alloc_seqid(&lsp
->ls_seqid
, GFP_KERNEL
);
5982 task
= nfs4_do_unlck(request
, nfs_file_open_context(request
->fl_file
), lsp
, seqid
);
5983 status
= PTR_ERR(task
);
5986 status
= rpc_wait_for_completion_task(task
);
5989 request
->fl_flags
= fl_flags
;
5990 trace_nfs4_unlock(request
, state
, F_SETLK
, status
);
5994 struct nfs4_lockdata
{
5995 struct nfs_lock_args arg
;
5996 struct nfs_lock_res res
;
5997 struct nfs4_lock_state
*lsp
;
5998 struct nfs_open_context
*ctx
;
5999 struct file_lock fl
;
6000 unsigned long timestamp
;
6003 struct nfs_server
*server
;
6006 static struct nfs4_lockdata
*nfs4_alloc_lockdata(struct file_lock
*fl
,
6007 struct nfs_open_context
*ctx
, struct nfs4_lock_state
*lsp
,
6010 struct nfs4_lockdata
*p
;
6011 struct inode
*inode
= lsp
->ls_state
->inode
;
6012 struct nfs_server
*server
= NFS_SERVER(inode
);
6013 struct nfs_seqid
*(*alloc_seqid
)(struct nfs_seqid_counter
*, gfp_t
);
6015 p
= kzalloc(sizeof(*p
), gfp_mask
);
6019 p
->arg
.fh
= NFS_FH(inode
);
6021 p
->arg
.open_seqid
= nfs_alloc_seqid(&lsp
->ls_state
->owner
->so_seqid
, gfp_mask
);
6022 if (IS_ERR(p
->arg
.open_seqid
))
6024 alloc_seqid
= server
->nfs_client
->cl_mvops
->alloc_seqid
;
6025 p
->arg
.lock_seqid
= alloc_seqid(&lsp
->ls_seqid
, gfp_mask
);
6026 if (IS_ERR(p
->arg
.lock_seqid
))
6027 goto out_free_seqid
;
6028 p
->arg
.lock_owner
.clientid
= server
->nfs_client
->cl_clientid
;
6029 p
->arg
.lock_owner
.id
= lsp
->ls_seqid
.owner_id
;
6030 p
->arg
.lock_owner
.s_dev
= server
->s_dev
;
6031 p
->res
.lock_seqid
= p
->arg
.lock_seqid
;
6034 atomic_inc(&lsp
->ls_count
);
6035 p
->ctx
= get_nfs_open_context(ctx
);
6036 memcpy(&p
->fl
, fl
, sizeof(p
->fl
));
6039 nfs_free_seqid(p
->arg
.open_seqid
);
6045 static void nfs4_lock_prepare(struct rpc_task
*task
, void *calldata
)
6047 struct nfs4_lockdata
*data
= calldata
;
6048 struct nfs4_state
*state
= data
->lsp
->ls_state
;
6050 dprintk("%s: begin!\n", __func__
);
6051 if (nfs_wait_on_sequence(data
->arg
.lock_seqid
, task
) != 0)
6053 /* Do we need to do an open_to_lock_owner? */
6054 if (!test_bit(NFS_LOCK_INITIALIZED
, &data
->lsp
->ls_flags
)) {
6055 if (nfs_wait_on_sequence(data
->arg
.open_seqid
, task
) != 0) {
6056 goto out_release_lock_seqid
;
6058 nfs4_stateid_copy(&data
->arg
.open_stateid
,
6059 &state
->open_stateid
);
6060 data
->arg
.new_lock_owner
= 1;
6061 data
->res
.open_seqid
= data
->arg
.open_seqid
;
6063 data
->arg
.new_lock_owner
= 0;
6064 nfs4_stateid_copy(&data
->arg
.lock_stateid
,
6065 &data
->lsp
->ls_stateid
);
6067 if (!nfs4_valid_open_stateid(state
)) {
6068 data
->rpc_status
= -EBADF
;
6069 task
->tk_action
= NULL
;
6070 goto out_release_open_seqid
;
6072 data
->timestamp
= jiffies
;
6073 if (nfs4_setup_sequence(data
->server
->nfs_client
,
6074 &data
->arg
.seq_args
,
6078 out_release_open_seqid
:
6079 nfs_release_seqid(data
->arg
.open_seqid
);
6080 out_release_lock_seqid
:
6081 nfs_release_seqid(data
->arg
.lock_seqid
);
6083 nfs4_sequence_done(task
, &data
->res
.seq_res
);
6084 dprintk("%s: done!, ret = %d\n", __func__
, data
->rpc_status
);
6087 static void nfs4_lock_done(struct rpc_task
*task
, void *calldata
)
6089 struct nfs4_lockdata
*data
= calldata
;
6090 struct nfs4_lock_state
*lsp
= data
->lsp
;
6092 dprintk("%s: begin!\n", __func__
);
6094 if (!nfs4_sequence_done(task
, &data
->res
.seq_res
))
6097 data
->rpc_status
= task
->tk_status
;
6098 switch (task
->tk_status
) {
6100 renew_lease(NFS_SERVER(d_inode(data
->ctx
->dentry
)),
6102 if (data
->arg
.new_lock
) {
6103 data
->fl
.fl_flags
&= ~(FL_SLEEP
| FL_ACCESS
);
6104 if (locks_lock_inode_wait(lsp
->ls_state
->inode
, &data
->fl
) < 0) {
6105 rpc_restart_call_prepare(task
);
6109 if (data
->arg
.new_lock_owner
!= 0) {
6110 nfs_confirm_seqid(&lsp
->ls_seqid
, 0);
6111 nfs4_stateid_copy(&lsp
->ls_stateid
, &data
->res
.stateid
);
6112 set_bit(NFS_LOCK_INITIALIZED
, &lsp
->ls_flags
);
6113 } else if (!nfs4_update_lock_stateid(lsp
, &data
->res
.stateid
))
6114 rpc_restart_call_prepare(task
);
6116 case -NFS4ERR_BAD_STATEID
:
6117 case -NFS4ERR_OLD_STATEID
:
6118 case -NFS4ERR_STALE_STATEID
:
6119 case -NFS4ERR_EXPIRED
:
6120 if (data
->arg
.new_lock_owner
!= 0) {
6121 if (!nfs4_stateid_match(&data
->arg
.open_stateid
,
6122 &lsp
->ls_state
->open_stateid
))
6123 rpc_restart_call_prepare(task
);
6124 } else if (!nfs4_stateid_match(&data
->arg
.lock_stateid
,
6126 rpc_restart_call_prepare(task
);
6128 dprintk("%s: done, ret = %d!\n", __func__
, data
->rpc_status
);
6131 static void nfs4_lock_release(void *calldata
)
6133 struct nfs4_lockdata
*data
= calldata
;
6135 dprintk("%s: begin!\n", __func__
);
6136 nfs_free_seqid(data
->arg
.open_seqid
);
6137 if (data
->cancelled
!= 0) {
6138 struct rpc_task
*task
;
6139 task
= nfs4_do_unlck(&data
->fl
, data
->ctx
, data
->lsp
,
6140 data
->arg
.lock_seqid
);
6142 rpc_put_task_async(task
);
6143 dprintk("%s: cancelling lock!\n", __func__
);
6145 nfs_free_seqid(data
->arg
.lock_seqid
);
6146 nfs4_put_lock_state(data
->lsp
);
6147 put_nfs_open_context(data
->ctx
);
6149 dprintk("%s: done!\n", __func__
);
6152 static const struct rpc_call_ops nfs4_lock_ops
= {
6153 .rpc_call_prepare
= nfs4_lock_prepare
,
6154 .rpc_call_done
= nfs4_lock_done
,
6155 .rpc_release
= nfs4_lock_release
,
6158 static void nfs4_handle_setlk_error(struct nfs_server
*server
, struct nfs4_lock_state
*lsp
, int new_lock_owner
, int error
)
6161 case -NFS4ERR_ADMIN_REVOKED
:
6162 case -NFS4ERR_EXPIRED
:
6163 case -NFS4ERR_BAD_STATEID
:
6164 lsp
->ls_seqid
.flags
&= ~NFS_SEQID_CONFIRMED
;
6165 if (new_lock_owner
!= 0 ||
6166 test_bit(NFS_LOCK_INITIALIZED
, &lsp
->ls_flags
) != 0)
6167 nfs4_schedule_stateid_recovery(server
, lsp
->ls_state
);
6169 case -NFS4ERR_STALE_STATEID
:
6170 lsp
->ls_seqid
.flags
&= ~NFS_SEQID_CONFIRMED
;
6171 nfs4_schedule_lease_recovery(server
->nfs_client
);
6175 static int _nfs4_do_setlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*fl
, int recovery_type
)
6177 struct nfs4_lockdata
*data
;
6178 struct rpc_task
*task
;
6179 struct rpc_message msg
= {
6180 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOCK
],
6181 .rpc_cred
= state
->owner
->so_cred
,
6183 struct rpc_task_setup task_setup_data
= {
6184 .rpc_client
= NFS_CLIENT(state
->inode
),
6185 .rpc_message
= &msg
,
6186 .callback_ops
= &nfs4_lock_ops
,
6187 .workqueue
= nfsiod_workqueue
,
6188 .flags
= RPC_TASK_ASYNC
,
6192 dprintk("%s: begin!\n", __func__
);
6193 data
= nfs4_alloc_lockdata(fl
, nfs_file_open_context(fl
->fl_file
),
6194 fl
->fl_u
.nfs4_fl
.owner
,
6195 recovery_type
== NFS_LOCK_NEW
? GFP_KERNEL
: GFP_NOFS
);
6199 data
->arg
.block
= 1;
6200 nfs4_init_sequence(&data
->arg
.seq_args
, &data
->res
.seq_res
, 1);
6201 msg
.rpc_argp
= &data
->arg
;
6202 msg
.rpc_resp
= &data
->res
;
6203 task_setup_data
.callback_data
= data
;
6204 if (recovery_type
> NFS_LOCK_NEW
) {
6205 if (recovery_type
== NFS_LOCK_RECLAIM
)
6206 data
->arg
.reclaim
= NFS_LOCK_RECLAIM
;
6207 nfs4_set_sequence_privileged(&data
->arg
.seq_args
);
6209 data
->arg
.new_lock
= 1;
6210 task
= rpc_run_task(&task_setup_data
);
6212 return PTR_ERR(task
);
6213 ret
= rpc_wait_for_completion_task(task
);
6215 ret
= data
->rpc_status
;
6217 nfs4_handle_setlk_error(data
->server
, data
->lsp
,
6218 data
->arg
.new_lock_owner
, ret
);
6220 data
->cancelled
= 1;
6222 dprintk("%s: done, ret = %d!\n", __func__
, ret
);
6223 trace_nfs4_set_lock(fl
, state
, &data
->res
.stateid
, cmd
, ret
);
6227 static int nfs4_lock_reclaim(struct nfs4_state
*state
, struct file_lock
*request
)
6229 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
6230 struct nfs4_exception exception
= {
6231 .inode
= state
->inode
,
6236 /* Cache the lock if possible... */
6237 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) != 0)
6239 err
= _nfs4_do_setlk(state
, F_SETLK
, request
, NFS_LOCK_RECLAIM
);
6240 if (err
!= -NFS4ERR_DELAY
)
6242 nfs4_handle_exception(server
, err
, &exception
);
6243 } while (exception
.retry
);
6247 static int nfs4_lock_expired(struct nfs4_state
*state
, struct file_lock
*request
)
6249 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
6250 struct nfs4_exception exception
= {
6251 .inode
= state
->inode
,
6255 err
= nfs4_set_lock_state(state
, request
);
6258 if (!recover_lost_locks
) {
6259 set_bit(NFS_LOCK_LOST
, &request
->fl_u
.nfs4_fl
.owner
->ls_flags
);
6263 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) != 0)
6265 err
= _nfs4_do_setlk(state
, F_SETLK
, request
, NFS_LOCK_EXPIRED
);
6269 case -NFS4ERR_GRACE
:
6270 case -NFS4ERR_DELAY
:
6271 nfs4_handle_exception(server
, err
, &exception
);
6274 } while (exception
.retry
);
6279 #if defined(CONFIG_NFS_V4_1)
6280 static int nfs41_lock_expired(struct nfs4_state
*state
, struct file_lock
*request
)
6282 struct nfs4_lock_state
*lsp
;
6285 status
= nfs4_set_lock_state(state
, request
);
6288 lsp
= request
->fl_u
.nfs4_fl
.owner
;
6289 if (test_bit(NFS_LOCK_INITIALIZED
, &lsp
->ls_flags
) ||
6290 test_bit(NFS_LOCK_LOST
, &lsp
->ls_flags
))
6292 return nfs4_lock_expired(state
, request
);
6296 static int _nfs4_proc_setlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
6298 struct nfs_inode
*nfsi
= NFS_I(state
->inode
);
6299 struct nfs4_state_owner
*sp
= state
->owner
;
6300 unsigned char fl_flags
= request
->fl_flags
;
6303 request
->fl_flags
|= FL_ACCESS
;
6304 status
= locks_lock_inode_wait(state
->inode
, request
);
6307 mutex_lock(&sp
->so_delegreturn_mutex
);
6308 down_read(&nfsi
->rwsem
);
6309 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
)) {
6310 /* Yes: cache locks! */
6311 /* ...but avoid races with delegation recall... */
6312 request
->fl_flags
= fl_flags
& ~FL_SLEEP
;
6313 status
= locks_lock_inode_wait(state
->inode
, request
);
6314 up_read(&nfsi
->rwsem
);
6315 mutex_unlock(&sp
->so_delegreturn_mutex
);
6318 up_read(&nfsi
->rwsem
);
6319 mutex_unlock(&sp
->so_delegreturn_mutex
);
6320 status
= _nfs4_do_setlk(state
, cmd
, request
, NFS_LOCK_NEW
);
6322 request
->fl_flags
= fl_flags
;
6326 static int nfs4_proc_setlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
6328 struct nfs4_exception exception
= {
6330 .inode
= state
->inode
,
6335 err
= _nfs4_proc_setlk(state
, cmd
, request
);
6336 if (err
== -NFS4ERR_DENIED
)
6338 err
= nfs4_handle_exception(NFS_SERVER(state
->inode
),
6340 } while (exception
.retry
);
6344 #define NFS4_LOCK_MINTIMEOUT (1 * HZ)
6345 #define NFS4_LOCK_MAXTIMEOUT (30 * HZ)
6348 nfs4_retry_setlk_simple(struct nfs4_state
*state
, int cmd
,
6349 struct file_lock
*request
)
6351 int status
= -ERESTARTSYS
;
6352 unsigned long timeout
= NFS4_LOCK_MINTIMEOUT
;
6354 while(!signalled()) {
6355 status
= nfs4_proc_setlk(state
, cmd
, request
);
6356 if ((status
!= -EAGAIN
) || IS_SETLK(cmd
))
6358 freezable_schedule_timeout_interruptible(timeout
);
6360 timeout
= min_t(unsigned long, NFS4_LOCK_MAXTIMEOUT
, timeout
);
6361 status
= -ERESTARTSYS
;
6366 #ifdef CONFIG_NFS_V4_1
6367 struct nfs4_lock_waiter
{
6368 struct task_struct
*task
;
6369 struct inode
*inode
;
6370 struct nfs_lowner
*owner
;
6375 nfs4_wake_lock_waiter(wait_queue_entry_t
*wait
, unsigned int mode
, int flags
, void *key
)
6378 struct cb_notify_lock_args
*cbnl
= key
;
6379 struct nfs4_lock_waiter
*waiter
= wait
->private;
6380 struct nfs_lowner
*lowner
= &cbnl
->cbnl_owner
,
6381 *wowner
= waiter
->owner
;
6383 /* Only wake if the callback was for the same owner */
6384 if (lowner
->clientid
!= wowner
->clientid
||
6385 lowner
->id
!= wowner
->id
||
6386 lowner
->s_dev
!= wowner
->s_dev
)
6389 /* Make sure it's for the right inode */
6390 if (nfs_compare_fh(NFS_FH(waiter
->inode
), &cbnl
->cbnl_fh
))
6393 waiter
->notified
= true;
6395 /* override "private" so we can use default_wake_function */
6396 wait
->private = waiter
->task
;
6397 ret
= autoremove_wake_function(wait
, mode
, flags
, key
);
6398 wait
->private = waiter
;
6403 nfs4_retry_setlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
6405 int status
= -ERESTARTSYS
;
6406 unsigned long flags
;
6407 struct nfs4_lock_state
*lsp
= request
->fl_u
.nfs4_fl
.owner
;
6408 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
6409 struct nfs_client
*clp
= server
->nfs_client
;
6410 wait_queue_head_t
*q
= &clp
->cl_lock_waitq
;
6411 struct nfs_lowner owner
= { .clientid
= clp
->cl_clientid
,
6412 .id
= lsp
->ls_seqid
.owner_id
,
6413 .s_dev
= server
->s_dev
};
6414 struct nfs4_lock_waiter waiter
= { .task
= current
,
6415 .inode
= state
->inode
,
6417 .notified
= false };
6418 wait_queue_entry_t wait
;
6420 /* Don't bother with waitqueue if we don't expect a callback */
6421 if (!test_bit(NFS_STATE_MAY_NOTIFY_LOCK
, &state
->flags
))
6422 return nfs4_retry_setlk_simple(state
, cmd
, request
);
6425 wait
.private = &waiter
;
6426 wait
.func
= nfs4_wake_lock_waiter
;
6427 add_wait_queue(q
, &wait
);
6429 while(!signalled()) {
6430 status
= nfs4_proc_setlk(state
, cmd
, request
);
6431 if ((status
!= -EAGAIN
) || IS_SETLK(cmd
))
6434 status
= -ERESTARTSYS
;
6435 spin_lock_irqsave(&q
->lock
, flags
);
6436 if (waiter
.notified
) {
6437 spin_unlock_irqrestore(&q
->lock
, flags
);
6440 set_current_state(TASK_INTERRUPTIBLE
);
6441 spin_unlock_irqrestore(&q
->lock
, flags
);
6443 freezable_schedule_timeout_interruptible(NFS4_LOCK_MAXTIMEOUT
);
6446 finish_wait(q
, &wait
);
6449 #else /* !CONFIG_NFS_V4_1 */
6451 nfs4_retry_setlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
6453 return nfs4_retry_setlk_simple(state
, cmd
, request
);
6458 nfs4_proc_lock(struct file
*filp
, int cmd
, struct file_lock
*request
)
6460 struct nfs_open_context
*ctx
;
6461 struct nfs4_state
*state
;
6464 /* verify open state */
6465 ctx
= nfs_file_open_context(filp
);
6468 if (IS_GETLK(cmd
)) {
6470 return nfs4_proc_getlk(state
, F_GETLK
, request
);
6474 if (!(IS_SETLK(cmd
) || IS_SETLKW(cmd
)))
6477 if (request
->fl_type
== F_UNLCK
) {
6479 return nfs4_proc_unlck(state
, cmd
, request
);
6486 if ((request
->fl_flags
& FL_POSIX
) &&
6487 !test_bit(NFS_STATE_POSIX_LOCKS
, &state
->flags
))
6490 status
= nfs4_set_lock_state(state
, request
);
6494 return nfs4_retry_setlk(state
, cmd
, request
);
6497 int nfs4_lock_delegation_recall(struct file_lock
*fl
, struct nfs4_state
*state
, const nfs4_stateid
*stateid
)
6499 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
6502 err
= nfs4_set_lock_state(state
, fl
);
6505 err
= _nfs4_do_setlk(state
, F_SETLK
, fl
, NFS_LOCK_NEW
);
6506 return nfs4_handle_delegation_recall_error(server
, state
, stateid
, err
);
6509 struct nfs_release_lockowner_data
{
6510 struct nfs4_lock_state
*lsp
;
6511 struct nfs_server
*server
;
6512 struct nfs_release_lockowner_args args
;
6513 struct nfs_release_lockowner_res res
;
6514 unsigned long timestamp
;
6517 static void nfs4_release_lockowner_prepare(struct rpc_task
*task
, void *calldata
)
6519 struct nfs_release_lockowner_data
*data
= calldata
;
6520 struct nfs_server
*server
= data
->server
;
6521 nfs4_setup_sequence(server
->nfs_client
, &data
->args
.seq_args
,
6522 &data
->res
.seq_res
, task
);
6523 data
->args
.lock_owner
.clientid
= server
->nfs_client
->cl_clientid
;
6524 data
->timestamp
= jiffies
;
6527 static void nfs4_release_lockowner_done(struct rpc_task
*task
, void *calldata
)
6529 struct nfs_release_lockowner_data
*data
= calldata
;
6530 struct nfs_server
*server
= data
->server
;
6532 nfs40_sequence_done(task
, &data
->res
.seq_res
);
6534 switch (task
->tk_status
) {
6536 renew_lease(server
, data
->timestamp
);
6538 case -NFS4ERR_STALE_CLIENTID
:
6539 case -NFS4ERR_EXPIRED
:
6540 nfs4_schedule_lease_recovery(server
->nfs_client
);
6542 case -NFS4ERR_LEASE_MOVED
:
6543 case -NFS4ERR_DELAY
:
6544 if (nfs4_async_handle_error(task
, server
,
6545 NULL
, NULL
) == -EAGAIN
)
6546 rpc_restart_call_prepare(task
);
6550 static void nfs4_release_lockowner_release(void *calldata
)
6552 struct nfs_release_lockowner_data
*data
= calldata
;
6553 nfs4_free_lock_state(data
->server
, data
->lsp
);
6557 static const struct rpc_call_ops nfs4_release_lockowner_ops
= {
6558 .rpc_call_prepare
= nfs4_release_lockowner_prepare
,
6559 .rpc_call_done
= nfs4_release_lockowner_done
,
6560 .rpc_release
= nfs4_release_lockowner_release
,
6564 nfs4_release_lockowner(struct nfs_server
*server
, struct nfs4_lock_state
*lsp
)
6566 struct nfs_release_lockowner_data
*data
;
6567 struct rpc_message msg
= {
6568 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RELEASE_LOCKOWNER
],
6571 if (server
->nfs_client
->cl_mvops
->minor_version
!= 0)
6574 data
= kmalloc(sizeof(*data
), GFP_NOFS
);
6578 data
->server
= server
;
6579 data
->args
.lock_owner
.clientid
= server
->nfs_client
->cl_clientid
;
6580 data
->args
.lock_owner
.id
= lsp
->ls_seqid
.owner_id
;
6581 data
->args
.lock_owner
.s_dev
= server
->s_dev
;
6583 msg
.rpc_argp
= &data
->args
;
6584 msg
.rpc_resp
= &data
->res
;
6585 nfs4_init_sequence(&data
->args
.seq_args
, &data
->res
.seq_res
, 0);
6586 rpc_call_async(server
->client
, &msg
, 0, &nfs4_release_lockowner_ops
, data
);
6589 #define XATTR_NAME_NFSV4_ACL "system.nfs4_acl"
6591 static int nfs4_xattr_set_nfs4_acl(const struct xattr_handler
*handler
,
6592 struct dentry
*unused
, struct inode
*inode
,
6593 const char *key
, const void *buf
,
6594 size_t buflen
, int flags
)
6596 return nfs4_proc_set_acl(inode
, buf
, buflen
);
6599 static int nfs4_xattr_get_nfs4_acl(const struct xattr_handler
*handler
,
6600 struct dentry
*unused
, struct inode
*inode
,
6601 const char *key
, void *buf
, size_t buflen
)
6603 return nfs4_proc_get_acl(inode
, buf
, buflen
);
6606 static bool nfs4_xattr_list_nfs4_acl(struct dentry
*dentry
)
6608 return nfs4_server_supports_acls(NFS_SERVER(d_inode(dentry
)));
6611 #ifdef CONFIG_NFS_V4_SECURITY_LABEL
6613 static int nfs4_xattr_set_nfs4_label(const struct xattr_handler
*handler
,
6614 struct dentry
*unused
, struct inode
*inode
,
6615 const char *key
, const void *buf
,
6616 size_t buflen
, int flags
)
6618 if (security_ismaclabel(key
))
6619 return nfs4_set_security_label(inode
, buf
, buflen
);
6624 static int nfs4_xattr_get_nfs4_label(const struct xattr_handler
*handler
,
6625 struct dentry
*unused
, struct inode
*inode
,
6626 const char *key
, void *buf
, size_t buflen
)
6628 if (security_ismaclabel(key
))
6629 return nfs4_get_security_label(inode
, buf
, buflen
);
6634 nfs4_listxattr_nfs4_label(struct inode
*inode
, char *list
, size_t list_len
)
6638 if (nfs_server_capable(inode
, NFS_CAP_SECURITY_LABEL
)) {
6639 len
= security_inode_listsecurity(inode
, list
, list_len
);
6640 if (list_len
&& len
> list_len
)
6646 static const struct xattr_handler nfs4_xattr_nfs4_label_handler
= {
6647 .prefix
= XATTR_SECURITY_PREFIX
,
6648 .get
= nfs4_xattr_get_nfs4_label
,
6649 .set
= nfs4_xattr_set_nfs4_label
,
6655 nfs4_listxattr_nfs4_label(struct inode
*inode
, char *list
, size_t list_len
)
6663 * nfs_fhget will use either the mounted_on_fileid or the fileid
6665 static void nfs_fixup_referral_attributes(struct nfs_fattr
*fattr
)
6667 if (!(((fattr
->valid
& NFS_ATTR_FATTR_MOUNTED_ON_FILEID
) ||
6668 (fattr
->valid
& NFS_ATTR_FATTR_FILEID
)) &&
6669 (fattr
->valid
& NFS_ATTR_FATTR_FSID
) &&
6670 (fattr
->valid
& NFS_ATTR_FATTR_V4_LOCATIONS
)))
6673 fattr
->valid
|= NFS_ATTR_FATTR_TYPE
| NFS_ATTR_FATTR_MODE
|
6674 NFS_ATTR_FATTR_NLINK
| NFS_ATTR_FATTR_V4_REFERRAL
;
6675 fattr
->mode
= S_IFDIR
| S_IRUGO
| S_IXUGO
;
6679 static int _nfs4_proc_fs_locations(struct rpc_clnt
*client
, struct inode
*dir
,
6680 const struct qstr
*name
,
6681 struct nfs4_fs_locations
*fs_locations
,
6684 struct nfs_server
*server
= NFS_SERVER(dir
);
6686 [0] = FATTR4_WORD0_FSID
| FATTR4_WORD0_FS_LOCATIONS
,
6688 struct nfs4_fs_locations_arg args
= {
6689 .dir_fh
= NFS_FH(dir
),
6694 struct nfs4_fs_locations_res res
= {
6695 .fs_locations
= fs_locations
,
6697 struct rpc_message msg
= {
6698 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_FS_LOCATIONS
],
6704 dprintk("%s: start\n", __func__
);
6706 /* Ask for the fileid of the absent filesystem if mounted_on_fileid
6707 * is not supported */
6708 if (NFS_SERVER(dir
)->attr_bitmask
[1] & FATTR4_WORD1_MOUNTED_ON_FILEID
)
6709 bitmask
[1] |= FATTR4_WORD1_MOUNTED_ON_FILEID
;
6711 bitmask
[0] |= FATTR4_WORD0_FILEID
;
6713 nfs_fattr_init(&fs_locations
->fattr
);
6714 fs_locations
->server
= server
;
6715 fs_locations
->nlocations
= 0;
6716 status
= nfs4_call_sync(client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
6717 dprintk("%s: returned status = %d\n", __func__
, status
);
6721 int nfs4_proc_fs_locations(struct rpc_clnt
*client
, struct inode
*dir
,
6722 const struct qstr
*name
,
6723 struct nfs4_fs_locations
*fs_locations
,
6726 struct nfs4_exception exception
= { };
6729 err
= _nfs4_proc_fs_locations(client
, dir
, name
,
6730 fs_locations
, page
);
6731 trace_nfs4_get_fs_locations(dir
, name
, err
);
6732 err
= nfs4_handle_exception(NFS_SERVER(dir
), err
,
6734 } while (exception
.retry
);
6739 * This operation also signals the server that this client is
6740 * performing migration recovery. The server can stop returning
6741 * NFS4ERR_LEASE_MOVED to this client. A RENEW operation is
6742 * appended to this compound to identify the client ID which is
6743 * performing recovery.
6745 static int _nfs40_proc_get_locations(struct inode
*inode
,
6746 struct nfs4_fs_locations
*locations
,
6747 struct page
*page
, struct rpc_cred
*cred
)
6749 struct nfs_server
*server
= NFS_SERVER(inode
);
6750 struct rpc_clnt
*clnt
= server
->client
;
6752 [0] = FATTR4_WORD0_FSID
| FATTR4_WORD0_FS_LOCATIONS
,
6754 struct nfs4_fs_locations_arg args
= {
6755 .clientid
= server
->nfs_client
->cl_clientid
,
6756 .fh
= NFS_FH(inode
),
6759 .migration
= 1, /* skip LOOKUP */
6760 .renew
= 1, /* append RENEW */
6762 struct nfs4_fs_locations_res res
= {
6763 .fs_locations
= locations
,
6767 struct rpc_message msg
= {
6768 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_FS_LOCATIONS
],
6773 unsigned long now
= jiffies
;
6776 nfs_fattr_init(&locations
->fattr
);
6777 locations
->server
= server
;
6778 locations
->nlocations
= 0;
6780 nfs4_init_sequence(&args
.seq_args
, &res
.seq_res
, 0);
6781 nfs4_set_sequence_privileged(&args
.seq_args
);
6782 status
= nfs4_call_sync_sequence(clnt
, server
, &msg
,
6783 &args
.seq_args
, &res
.seq_res
);
6787 renew_lease(server
, now
);
6791 #ifdef CONFIG_NFS_V4_1
6794 * This operation also signals the server that this client is
6795 * performing migration recovery. The server can stop asserting
6796 * SEQ4_STATUS_LEASE_MOVED for this client. The client ID
6797 * performing this operation is identified in the SEQUENCE
6798 * operation in this compound.
6800 * When the client supports GETATTR(fs_locations_info), it can
6801 * be plumbed in here.
6803 static int _nfs41_proc_get_locations(struct inode
*inode
,
6804 struct nfs4_fs_locations
*locations
,
6805 struct page
*page
, struct rpc_cred
*cred
)
6807 struct nfs_server
*server
= NFS_SERVER(inode
);
6808 struct rpc_clnt
*clnt
= server
->client
;
6810 [0] = FATTR4_WORD0_FSID
| FATTR4_WORD0_FS_LOCATIONS
,
6812 struct nfs4_fs_locations_arg args
= {
6813 .fh
= NFS_FH(inode
),
6816 .migration
= 1, /* skip LOOKUP */
6818 struct nfs4_fs_locations_res res
= {
6819 .fs_locations
= locations
,
6822 struct rpc_message msg
= {
6823 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_FS_LOCATIONS
],
6830 nfs_fattr_init(&locations
->fattr
);
6831 locations
->server
= server
;
6832 locations
->nlocations
= 0;
6834 nfs4_init_sequence(&args
.seq_args
, &res
.seq_res
, 0);
6835 nfs4_set_sequence_privileged(&args
.seq_args
);
6836 status
= nfs4_call_sync_sequence(clnt
, server
, &msg
,
6837 &args
.seq_args
, &res
.seq_res
);
6838 if (status
== NFS4_OK
&&
6839 res
.seq_res
.sr_status_flags
& SEQ4_STATUS_LEASE_MOVED
)
6840 status
= -NFS4ERR_LEASE_MOVED
;
6844 #endif /* CONFIG_NFS_V4_1 */
6847 * nfs4_proc_get_locations - discover locations for a migrated FSID
6848 * @inode: inode on FSID that is migrating
6849 * @locations: result of query
6851 * @cred: credential to use for this operation
6853 * Returns NFS4_OK on success, a negative NFS4ERR status code if the
6854 * operation failed, or a negative errno if a local error occurred.
6856 * On success, "locations" is filled in, but if the server has
6857 * no locations information, NFS_ATTR_FATTR_V4_LOCATIONS is not
6860 * -NFS4ERR_LEASE_MOVED is returned if the server still has leases
6861 * from this client that require migration recovery.
6863 int nfs4_proc_get_locations(struct inode
*inode
,
6864 struct nfs4_fs_locations
*locations
,
6865 struct page
*page
, struct rpc_cred
*cred
)
6867 struct nfs_server
*server
= NFS_SERVER(inode
);
6868 struct nfs_client
*clp
= server
->nfs_client
;
6869 const struct nfs4_mig_recovery_ops
*ops
=
6870 clp
->cl_mvops
->mig_recovery_ops
;
6871 struct nfs4_exception exception
= { };
6874 dprintk("%s: FSID %llx:%llx on \"%s\"\n", __func__
,
6875 (unsigned long long)server
->fsid
.major
,
6876 (unsigned long long)server
->fsid
.minor
,
6878 nfs_display_fhandle(NFS_FH(inode
), __func__
);
6881 status
= ops
->get_locations(inode
, locations
, page
, cred
);
6882 if (status
!= -NFS4ERR_DELAY
)
6884 nfs4_handle_exception(server
, status
, &exception
);
6885 } while (exception
.retry
);
6890 * This operation also signals the server that this client is
6891 * performing "lease moved" recovery. The server can stop
6892 * returning NFS4ERR_LEASE_MOVED to this client. A RENEW operation
6893 * is appended to this compound to identify the client ID which is
6894 * performing recovery.
6896 static int _nfs40_proc_fsid_present(struct inode
*inode
, struct rpc_cred
*cred
)
6898 struct nfs_server
*server
= NFS_SERVER(inode
);
6899 struct nfs_client
*clp
= NFS_SERVER(inode
)->nfs_client
;
6900 struct rpc_clnt
*clnt
= server
->client
;
6901 struct nfs4_fsid_present_arg args
= {
6902 .fh
= NFS_FH(inode
),
6903 .clientid
= clp
->cl_clientid
,
6904 .renew
= 1, /* append RENEW */
6906 struct nfs4_fsid_present_res res
= {
6909 struct rpc_message msg
= {
6910 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_FSID_PRESENT
],
6915 unsigned long now
= jiffies
;
6918 res
.fh
= nfs_alloc_fhandle();
6922 nfs4_init_sequence(&args
.seq_args
, &res
.seq_res
, 0);
6923 nfs4_set_sequence_privileged(&args
.seq_args
);
6924 status
= nfs4_call_sync_sequence(clnt
, server
, &msg
,
6925 &args
.seq_args
, &res
.seq_res
);
6926 nfs_free_fhandle(res
.fh
);
6930 do_renew_lease(clp
, now
);
6934 #ifdef CONFIG_NFS_V4_1
6937 * This operation also signals the server that this client is
6938 * performing "lease moved" recovery. The server can stop asserting
6939 * SEQ4_STATUS_LEASE_MOVED for this client. The client ID performing
6940 * this operation is identified in the SEQUENCE operation in this
6943 static int _nfs41_proc_fsid_present(struct inode
*inode
, struct rpc_cred
*cred
)
6945 struct nfs_server
*server
= NFS_SERVER(inode
);
6946 struct rpc_clnt
*clnt
= server
->client
;
6947 struct nfs4_fsid_present_arg args
= {
6948 .fh
= NFS_FH(inode
),
6950 struct nfs4_fsid_present_res res
= {
6952 struct rpc_message msg
= {
6953 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_FSID_PRESENT
],
6960 res
.fh
= nfs_alloc_fhandle();
6964 nfs4_init_sequence(&args
.seq_args
, &res
.seq_res
, 0);
6965 nfs4_set_sequence_privileged(&args
.seq_args
);
6966 status
= nfs4_call_sync_sequence(clnt
, server
, &msg
,
6967 &args
.seq_args
, &res
.seq_res
);
6968 nfs_free_fhandle(res
.fh
);
6969 if (status
== NFS4_OK
&&
6970 res
.seq_res
.sr_status_flags
& SEQ4_STATUS_LEASE_MOVED
)
6971 status
= -NFS4ERR_LEASE_MOVED
;
6975 #endif /* CONFIG_NFS_V4_1 */
6978 * nfs4_proc_fsid_present - Is this FSID present or absent on server?
6979 * @inode: inode on FSID to check
6980 * @cred: credential to use for this operation
6982 * Server indicates whether the FSID is present, moved, or not
6983 * recognized. This operation is necessary to clear a LEASE_MOVED
6984 * condition for this client ID.
6986 * Returns NFS4_OK if the FSID is present on this server,
6987 * -NFS4ERR_MOVED if the FSID is no longer present, a negative
6988 * NFS4ERR code if some error occurred on the server, or a
6989 * negative errno if a local failure occurred.
6991 int nfs4_proc_fsid_present(struct inode
*inode
, struct rpc_cred
*cred
)
6993 struct nfs_server
*server
= NFS_SERVER(inode
);
6994 struct nfs_client
*clp
= server
->nfs_client
;
6995 const struct nfs4_mig_recovery_ops
*ops
=
6996 clp
->cl_mvops
->mig_recovery_ops
;
6997 struct nfs4_exception exception
= { };
7000 dprintk("%s: FSID %llx:%llx on \"%s\"\n", __func__
,
7001 (unsigned long long)server
->fsid
.major
,
7002 (unsigned long long)server
->fsid
.minor
,
7004 nfs_display_fhandle(NFS_FH(inode
), __func__
);
7007 status
= ops
->fsid_present(inode
, cred
);
7008 if (status
!= -NFS4ERR_DELAY
)
7010 nfs4_handle_exception(server
, status
, &exception
);
7011 } while (exception
.retry
);
7016 * If 'use_integrity' is true and the state managment nfs_client
7017 * cl_rpcclient is using krb5i/p, use the integrity protected cl_rpcclient
7018 * and the machine credential as per RFC3530bis and RFC5661 Security
7019 * Considerations sections. Otherwise, just use the user cred with the
7020 * filesystem's rpc_client.
7022 static int _nfs4_proc_secinfo(struct inode
*dir
, const struct qstr
*name
, struct nfs4_secinfo_flavors
*flavors
, bool use_integrity
)
7025 struct nfs4_secinfo_arg args
= {
7026 .dir_fh
= NFS_FH(dir
),
7029 struct nfs4_secinfo_res res
= {
7032 struct rpc_message msg
= {
7033 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SECINFO
],
7037 struct rpc_clnt
*clnt
= NFS_SERVER(dir
)->client
;
7038 struct rpc_cred
*cred
= NULL
;
7040 if (use_integrity
) {
7041 clnt
= NFS_SERVER(dir
)->nfs_client
->cl_rpcclient
;
7042 cred
= nfs4_get_clid_cred(NFS_SERVER(dir
)->nfs_client
);
7043 msg
.rpc_cred
= cred
;
7046 dprintk("NFS call secinfo %s\n", name
->name
);
7048 nfs4_state_protect(NFS_SERVER(dir
)->nfs_client
,
7049 NFS_SP4_MACH_CRED_SECINFO
, &clnt
, &msg
);
7051 status
= nfs4_call_sync(clnt
, NFS_SERVER(dir
), &msg
, &args
.seq_args
,
7053 dprintk("NFS reply secinfo: %d\n", status
);
7061 int nfs4_proc_secinfo(struct inode
*dir
, const struct qstr
*name
,
7062 struct nfs4_secinfo_flavors
*flavors
)
7064 struct nfs4_exception exception
= { };
7067 err
= -NFS4ERR_WRONGSEC
;
7069 /* try to use integrity protection with machine cred */
7070 if (_nfs4_is_integrity_protected(NFS_SERVER(dir
)->nfs_client
))
7071 err
= _nfs4_proc_secinfo(dir
, name
, flavors
, true);
7074 * if unable to use integrity protection, or SECINFO with
7075 * integrity protection returns NFS4ERR_WRONGSEC (which is
7076 * disallowed by spec, but exists in deployed servers) use
7077 * the current filesystem's rpc_client and the user cred.
7079 if (err
== -NFS4ERR_WRONGSEC
)
7080 err
= _nfs4_proc_secinfo(dir
, name
, flavors
, false);
7082 trace_nfs4_secinfo(dir
, name
, err
);
7083 err
= nfs4_handle_exception(NFS_SERVER(dir
), err
,
7085 } while (exception
.retry
);
7089 #ifdef CONFIG_NFS_V4_1
7091 * Check the exchange flags returned by the server for invalid flags, having
7092 * both PNFS and NON_PNFS flags set, and not having one of NON_PNFS, PNFS, or
7095 static int nfs4_check_cl_exchange_flags(u32 flags
)
7097 if (flags
& ~EXCHGID4_FLAG_MASK_R
)
7099 if ((flags
& EXCHGID4_FLAG_USE_PNFS_MDS
) &&
7100 (flags
& EXCHGID4_FLAG_USE_NON_PNFS
))
7102 if (!(flags
& (EXCHGID4_FLAG_MASK_PNFS
)))
7106 return -NFS4ERR_INVAL
;
7110 nfs41_same_server_scope(struct nfs41_server_scope
*a
,
7111 struct nfs41_server_scope
*b
)
7113 if (a
->server_scope_sz
!= b
->server_scope_sz
)
7115 return memcmp(a
->server_scope
, b
->server_scope
, a
->server_scope_sz
) == 0;
7119 nfs4_bind_one_conn_to_session_done(struct rpc_task
*task
, void *calldata
)
7123 static const struct rpc_call_ops nfs4_bind_one_conn_to_session_ops
= {
7124 .rpc_call_done
= &nfs4_bind_one_conn_to_session_done
,
7128 * nfs4_proc_bind_one_conn_to_session()
7130 * The 4.1 client currently uses the same TCP connection for the
7131 * fore and backchannel.
7134 int nfs4_proc_bind_one_conn_to_session(struct rpc_clnt
*clnt
,
7135 struct rpc_xprt
*xprt
,
7136 struct nfs_client
*clp
,
7137 struct rpc_cred
*cred
)
7140 struct nfs41_bind_conn_to_session_args args
= {
7142 .dir
= NFS4_CDFC4_FORE_OR_BOTH
,
7144 struct nfs41_bind_conn_to_session_res res
;
7145 struct rpc_message msg
= {
7147 &nfs4_procedures
[NFSPROC4_CLNT_BIND_CONN_TO_SESSION
],
7152 struct rpc_task_setup task_setup_data
= {
7155 .callback_ops
= &nfs4_bind_one_conn_to_session_ops
,
7156 .rpc_message
= &msg
,
7157 .flags
= RPC_TASK_TIMEOUT
,
7159 struct rpc_task
*task
;
7161 nfs4_copy_sessionid(&args
.sessionid
, &clp
->cl_session
->sess_id
);
7162 if (!(clp
->cl_session
->flags
& SESSION4_BACK_CHAN
))
7163 args
.dir
= NFS4_CDFC4_FORE
;
7165 /* Do not set the backchannel flag unless this is clnt->cl_xprt */
7166 if (xprt
!= rcu_access_pointer(clnt
->cl_xprt
))
7167 args
.dir
= NFS4_CDFC4_FORE
;
7169 task
= rpc_run_task(&task_setup_data
);
7170 if (!IS_ERR(task
)) {
7171 status
= task
->tk_status
;
7174 status
= PTR_ERR(task
);
7175 trace_nfs4_bind_conn_to_session(clp
, status
);
7177 if (memcmp(res
.sessionid
.data
,
7178 clp
->cl_session
->sess_id
.data
, NFS4_MAX_SESSIONID_LEN
)) {
7179 dprintk("NFS: %s: Session ID mismatch\n", __func__
);
7182 if ((res
.dir
& args
.dir
) != res
.dir
|| res
.dir
== 0) {
7183 dprintk("NFS: %s: Unexpected direction from server\n",
7187 if (res
.use_conn_in_rdma_mode
!= args
.use_conn_in_rdma_mode
) {
7188 dprintk("NFS: %s: Server returned RDMA mode = true\n",
7197 struct rpc_bind_conn_calldata
{
7198 struct nfs_client
*clp
;
7199 struct rpc_cred
*cred
;
7203 nfs4_proc_bind_conn_to_session_callback(struct rpc_clnt
*clnt
,
7204 struct rpc_xprt
*xprt
,
7207 struct rpc_bind_conn_calldata
*p
= calldata
;
7209 return nfs4_proc_bind_one_conn_to_session(clnt
, xprt
, p
->clp
, p
->cred
);
7212 int nfs4_proc_bind_conn_to_session(struct nfs_client
*clp
, struct rpc_cred
*cred
)
7214 struct rpc_bind_conn_calldata data
= {
7218 return rpc_clnt_iterate_for_each_xprt(clp
->cl_rpcclient
,
7219 nfs4_proc_bind_conn_to_session_callback
, &data
);
7223 * Minimum set of SP4_MACH_CRED operations from RFC 5661 in the enforce map
7224 * and operations we'd like to see to enable certain features in the allow map
7226 static const struct nfs41_state_protection nfs4_sp4_mach_cred_request
= {
7227 .how
= SP4_MACH_CRED
,
7228 .enforce
.u
.words
= {
7229 [1] = 1 << (OP_BIND_CONN_TO_SESSION
- 32) |
7230 1 << (OP_EXCHANGE_ID
- 32) |
7231 1 << (OP_CREATE_SESSION
- 32) |
7232 1 << (OP_DESTROY_SESSION
- 32) |
7233 1 << (OP_DESTROY_CLIENTID
- 32)
7236 [0] = 1 << (OP_CLOSE
) |
7237 1 << (OP_OPEN_DOWNGRADE
) |
7239 1 << (OP_DELEGRETURN
) |
7241 [1] = 1 << (OP_SECINFO
- 32) |
7242 1 << (OP_SECINFO_NO_NAME
- 32) |
7243 1 << (OP_LAYOUTRETURN
- 32) |
7244 1 << (OP_TEST_STATEID
- 32) |
7245 1 << (OP_FREE_STATEID
- 32) |
7246 1 << (OP_WRITE
- 32)
7251 * Select the state protection mode for client `clp' given the server results
7252 * from exchange_id in `sp'.
7254 * Returns 0 on success, negative errno otherwise.
7256 static int nfs4_sp4_select_mode(struct nfs_client
*clp
,
7257 struct nfs41_state_protection
*sp
)
7259 static const u32 supported_enforce
[NFS4_OP_MAP_NUM_WORDS
] = {
7260 [1] = 1 << (OP_BIND_CONN_TO_SESSION
- 32) |
7261 1 << (OP_EXCHANGE_ID
- 32) |
7262 1 << (OP_CREATE_SESSION
- 32) |
7263 1 << (OP_DESTROY_SESSION
- 32) |
7264 1 << (OP_DESTROY_CLIENTID
- 32)
7268 if (sp
->how
== SP4_MACH_CRED
) {
7269 /* Print state protect result */
7270 dfprintk(MOUNT
, "Server SP4_MACH_CRED support:\n");
7271 for (i
= 0; i
<= LAST_NFS4_OP
; i
++) {
7272 if (test_bit(i
, sp
->enforce
.u
.longs
))
7273 dfprintk(MOUNT
, " enforce op %d\n", i
);
7274 if (test_bit(i
, sp
->allow
.u
.longs
))
7275 dfprintk(MOUNT
, " allow op %d\n", i
);
7278 /* make sure nothing is on enforce list that isn't supported */
7279 for (i
= 0; i
< NFS4_OP_MAP_NUM_WORDS
; i
++) {
7280 if (sp
->enforce
.u
.words
[i
] & ~supported_enforce
[i
]) {
7281 dfprintk(MOUNT
, "sp4_mach_cred: disabled\n");
7287 * Minimal mode - state operations are allowed to use machine
7288 * credential. Note this already happens by default, so the
7289 * client doesn't have to do anything more than the negotiation.
7291 * NOTE: we don't care if EXCHANGE_ID is in the list -
7292 * we're already using the machine cred for exchange_id
7293 * and will never use a different cred.
7295 if (test_bit(OP_BIND_CONN_TO_SESSION
, sp
->enforce
.u
.longs
) &&
7296 test_bit(OP_CREATE_SESSION
, sp
->enforce
.u
.longs
) &&
7297 test_bit(OP_DESTROY_SESSION
, sp
->enforce
.u
.longs
) &&
7298 test_bit(OP_DESTROY_CLIENTID
, sp
->enforce
.u
.longs
)) {
7299 dfprintk(MOUNT
, "sp4_mach_cred:\n");
7300 dfprintk(MOUNT
, " minimal mode enabled\n");
7301 set_bit(NFS_SP4_MACH_CRED_MINIMAL
, &clp
->cl_sp4_flags
);
7303 dfprintk(MOUNT
, "sp4_mach_cred: disabled\n");
7307 if (test_bit(OP_CLOSE
, sp
->allow
.u
.longs
) &&
7308 test_bit(OP_OPEN_DOWNGRADE
, sp
->allow
.u
.longs
) &&
7309 test_bit(OP_DELEGRETURN
, sp
->allow
.u
.longs
) &&
7310 test_bit(OP_LOCKU
, sp
->allow
.u
.longs
)) {
7311 dfprintk(MOUNT
, " cleanup mode enabled\n");
7312 set_bit(NFS_SP4_MACH_CRED_CLEANUP
, &clp
->cl_sp4_flags
);
7315 if (test_bit(OP_LAYOUTRETURN
, sp
->allow
.u
.longs
)) {
7316 dfprintk(MOUNT
, " pnfs cleanup mode enabled\n");
7317 set_bit(NFS_SP4_MACH_CRED_PNFS_CLEANUP
,
7318 &clp
->cl_sp4_flags
);
7321 if (test_bit(OP_SECINFO
, sp
->allow
.u
.longs
) &&
7322 test_bit(OP_SECINFO_NO_NAME
, sp
->allow
.u
.longs
)) {
7323 dfprintk(MOUNT
, " secinfo mode enabled\n");
7324 set_bit(NFS_SP4_MACH_CRED_SECINFO
, &clp
->cl_sp4_flags
);
7327 if (test_bit(OP_TEST_STATEID
, sp
->allow
.u
.longs
) &&
7328 test_bit(OP_FREE_STATEID
, sp
->allow
.u
.longs
)) {
7329 dfprintk(MOUNT
, " stateid mode enabled\n");
7330 set_bit(NFS_SP4_MACH_CRED_STATEID
, &clp
->cl_sp4_flags
);
7333 if (test_bit(OP_WRITE
, sp
->allow
.u
.longs
)) {
7334 dfprintk(MOUNT
, " write mode enabled\n");
7335 set_bit(NFS_SP4_MACH_CRED_WRITE
, &clp
->cl_sp4_flags
);
7338 if (test_bit(OP_COMMIT
, sp
->allow
.u
.longs
)) {
7339 dfprintk(MOUNT
, " commit mode enabled\n");
7340 set_bit(NFS_SP4_MACH_CRED_COMMIT
, &clp
->cl_sp4_flags
);
7347 struct nfs41_exchange_id_data
{
7348 struct nfs41_exchange_id_res res
;
7349 struct nfs41_exchange_id_args args
;
7350 struct rpc_xprt
*xprt
;
7354 static void nfs4_exchange_id_done(struct rpc_task
*task
, void *data
)
7356 struct nfs41_exchange_id_data
*cdata
=
7357 (struct nfs41_exchange_id_data
*)data
;
7358 struct nfs_client
*clp
= cdata
->args
.client
;
7359 int status
= task
->tk_status
;
7361 trace_nfs4_exchange_id(clp
, status
);
7364 status
= nfs4_check_cl_exchange_flags(cdata
->res
.flags
);
7366 if (cdata
->xprt
&& status
== 0) {
7367 status
= nfs4_detect_session_trunking(clp
, &cdata
->res
,
7373 status
= nfs4_sp4_select_mode(clp
, &cdata
->res
.state_protect
);
7376 clp
->cl_clientid
= cdata
->res
.clientid
;
7377 clp
->cl_exchange_flags
= cdata
->res
.flags
;
7378 /* Client ID is not confirmed */
7379 if (!(cdata
->res
.flags
& EXCHGID4_FLAG_CONFIRMED_R
)) {
7380 clear_bit(NFS4_SESSION_ESTABLISHED
,
7381 &clp
->cl_session
->session_state
);
7382 clp
->cl_seqid
= cdata
->res
.seqid
;
7385 kfree(clp
->cl_serverowner
);
7386 clp
->cl_serverowner
= cdata
->res
.server_owner
;
7387 cdata
->res
.server_owner
= NULL
;
7389 /* use the most recent implementation id */
7390 kfree(clp
->cl_implid
);
7391 clp
->cl_implid
= cdata
->res
.impl_id
;
7392 cdata
->res
.impl_id
= NULL
;
7394 if (clp
->cl_serverscope
!= NULL
&&
7395 !nfs41_same_server_scope(clp
->cl_serverscope
,
7396 cdata
->res
.server_scope
)) {
7397 dprintk("%s: server_scope mismatch detected\n",
7399 set_bit(NFS4CLNT_SERVER_SCOPE_MISMATCH
, &clp
->cl_state
);
7400 kfree(clp
->cl_serverscope
);
7401 clp
->cl_serverscope
= NULL
;
7404 if (clp
->cl_serverscope
== NULL
) {
7405 clp
->cl_serverscope
= cdata
->res
.server_scope
;
7406 cdata
->res
.server_scope
= NULL
;
7408 /* Save the EXCHANGE_ID verifier session trunk tests */
7409 memcpy(clp
->cl_confirm
.data
, cdata
->args
.verifier
->data
,
7410 sizeof(clp
->cl_confirm
.data
));
7413 cdata
->rpc_status
= status
;
7417 static void nfs4_exchange_id_release(void *data
)
7419 struct nfs41_exchange_id_data
*cdata
=
7420 (struct nfs41_exchange_id_data
*)data
;
7423 xprt_put(cdata
->xprt
);
7424 rpc_clnt_xprt_switch_put(cdata
->args
.client
->cl_rpcclient
);
7426 nfs_put_client(cdata
->args
.client
);
7427 kfree(cdata
->res
.impl_id
);
7428 kfree(cdata
->res
.server_scope
);
7429 kfree(cdata
->res
.server_owner
);
7433 static const struct rpc_call_ops nfs4_exchange_id_call_ops
= {
7434 .rpc_call_done
= nfs4_exchange_id_done
,
7435 .rpc_release
= nfs4_exchange_id_release
,
7439 * _nfs4_proc_exchange_id()
7441 * Wrapper for EXCHANGE_ID operation.
7443 static int _nfs4_proc_exchange_id(struct nfs_client
*clp
, struct rpc_cred
*cred
,
7444 u32 sp4_how
, struct rpc_xprt
*xprt
)
7446 nfs4_verifier verifier
;
7447 struct rpc_message msg
= {
7448 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_EXCHANGE_ID
],
7451 struct rpc_task_setup task_setup_data
= {
7452 .rpc_client
= clp
->cl_rpcclient
,
7453 .callback_ops
= &nfs4_exchange_id_call_ops
,
7454 .rpc_message
= &msg
,
7455 .flags
= RPC_TASK_ASYNC
| RPC_TASK_TIMEOUT
,
7457 struct nfs41_exchange_id_data
*calldata
;
7458 struct rpc_task
*task
;
7461 if (!atomic_inc_not_zero(&clp
->cl_count
))
7464 calldata
= kzalloc(sizeof(*calldata
), GFP_NOFS
);
7466 nfs_put_client(clp
);
7471 nfs4_init_boot_verifier(clp
, &verifier
);
7473 status
= nfs4_init_uniform_client_string(clp
);
7477 calldata
->res
.server_owner
= kzalloc(sizeof(struct nfs41_server_owner
),
7480 if (unlikely(calldata
->res
.server_owner
== NULL
))
7483 calldata
->res
.server_scope
= kzalloc(sizeof(struct nfs41_server_scope
),
7485 if (unlikely(calldata
->res
.server_scope
== NULL
))
7486 goto out_server_owner
;
7488 calldata
->res
.impl_id
= kzalloc(sizeof(struct nfs41_impl_id
), GFP_NOFS
);
7489 if (unlikely(calldata
->res
.impl_id
== NULL
))
7490 goto out_server_scope
;
7494 calldata
->args
.state_protect
.how
= SP4_NONE
;
7498 calldata
->args
.state_protect
= nfs4_sp4_mach_cred_request
;
7508 calldata
->xprt
= xprt
;
7509 task_setup_data
.rpc_xprt
= xprt
;
7510 task_setup_data
.flags
=
7511 RPC_TASK_SOFT
|RPC_TASK_SOFTCONN
|RPC_TASK_ASYNC
;
7512 calldata
->args
.verifier
= &clp
->cl_confirm
;
7514 calldata
->args
.verifier
= &verifier
;
7516 calldata
->args
.client
= clp
;
7517 #ifdef CONFIG_NFS_V4_1_MIGRATION
7518 calldata
->args
.flags
= EXCHGID4_FLAG_SUPP_MOVED_REFER
|
7519 EXCHGID4_FLAG_BIND_PRINC_STATEID
|
7520 EXCHGID4_FLAG_SUPP_MOVED_MIGR
,
7522 calldata
->args
.flags
= EXCHGID4_FLAG_SUPP_MOVED_REFER
|
7523 EXCHGID4_FLAG_BIND_PRINC_STATEID
,
7525 msg
.rpc_argp
= &calldata
->args
;
7526 msg
.rpc_resp
= &calldata
->res
;
7527 task_setup_data
.callback_data
= calldata
;
7529 task
= rpc_run_task(&task_setup_data
);
7531 return PTR_ERR(task
);
7534 status
= rpc_wait_for_completion_task(task
);
7536 status
= calldata
->rpc_status
;
7537 } else /* session trunking test */
7538 status
= calldata
->rpc_status
;
7545 kfree(calldata
->res
.impl_id
);
7547 kfree(calldata
->res
.server_scope
);
7549 kfree(calldata
->res
.server_owner
);
7552 nfs_put_client(clp
);
7557 * nfs4_proc_exchange_id()
7559 * Returns zero, a negative errno, or a negative NFS4ERR status code.
7561 * Since the clientid has expired, all compounds using sessions
7562 * associated with the stale clientid will be returning
7563 * NFS4ERR_BADSESSION in the sequence operation, and will therefore
7564 * be in some phase of session reset.
7566 * Will attempt to negotiate SP4_MACH_CRED if krb5i / krb5p auth is used.
7568 int nfs4_proc_exchange_id(struct nfs_client
*clp
, struct rpc_cred
*cred
)
7570 rpc_authflavor_t authflavor
= clp
->cl_rpcclient
->cl_auth
->au_flavor
;
7573 /* try SP4_MACH_CRED if krb5i/p */
7574 if (authflavor
== RPC_AUTH_GSS_KRB5I
||
7575 authflavor
== RPC_AUTH_GSS_KRB5P
) {
7576 status
= _nfs4_proc_exchange_id(clp
, cred
, SP4_MACH_CRED
, NULL
);
7582 return _nfs4_proc_exchange_id(clp
, cred
, SP4_NONE
, NULL
);
7586 * nfs4_test_session_trunk
7588 * This is an add_xprt_test() test function called from
7589 * rpc_clnt_setup_test_and_add_xprt.
7591 * The rpc_xprt_switch is referrenced by rpc_clnt_setup_test_and_add_xprt
7592 * and is dereferrenced in nfs4_exchange_id_release
7594 * Upon success, add the new transport to the rpc_clnt
7596 * @clnt: struct rpc_clnt to get new transport
7597 * @xprt: the rpc_xprt to test
7598 * @data: call data for _nfs4_proc_exchange_id.
7600 int nfs4_test_session_trunk(struct rpc_clnt
*clnt
, struct rpc_xprt
*xprt
,
7603 struct nfs4_add_xprt_data
*adata
= (struct nfs4_add_xprt_data
*)data
;
7606 dprintk("--> %s try %s\n", __func__
,
7607 xprt
->address_strings
[RPC_DISPLAY_ADDR
]);
7609 sp4_how
= (adata
->clp
->cl_sp4_flags
== 0 ? SP4_NONE
: SP4_MACH_CRED
);
7611 /* Test connection for session trunking. Async exchange_id call */
7612 return _nfs4_proc_exchange_id(adata
->clp
, adata
->cred
, sp4_how
, xprt
);
7614 EXPORT_SYMBOL_GPL(nfs4_test_session_trunk
);
7616 static int _nfs4_proc_destroy_clientid(struct nfs_client
*clp
,
7617 struct rpc_cred
*cred
)
7619 struct rpc_message msg
= {
7620 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_DESTROY_CLIENTID
],
7626 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
7627 trace_nfs4_destroy_clientid(clp
, status
);
7629 dprintk("NFS: Got error %d from the server %s on "
7630 "DESTROY_CLIENTID.", status
, clp
->cl_hostname
);
7634 static int nfs4_proc_destroy_clientid(struct nfs_client
*clp
,
7635 struct rpc_cred
*cred
)
7640 for (loop
= NFS4_MAX_LOOP_ON_RECOVER
; loop
!= 0; loop
--) {
7641 ret
= _nfs4_proc_destroy_clientid(clp
, cred
);
7643 case -NFS4ERR_DELAY
:
7644 case -NFS4ERR_CLIENTID_BUSY
:
7654 int nfs4_destroy_clientid(struct nfs_client
*clp
)
7656 struct rpc_cred
*cred
;
7659 if (clp
->cl_mvops
->minor_version
< 1)
7661 if (clp
->cl_exchange_flags
== 0)
7663 if (clp
->cl_preserve_clid
)
7665 cred
= nfs4_get_clid_cred(clp
);
7666 ret
= nfs4_proc_destroy_clientid(clp
, cred
);
7671 case -NFS4ERR_STALE_CLIENTID
:
7672 clp
->cl_exchange_flags
= 0;
7678 struct nfs4_get_lease_time_data
{
7679 struct nfs4_get_lease_time_args
*args
;
7680 struct nfs4_get_lease_time_res
*res
;
7681 struct nfs_client
*clp
;
7684 static void nfs4_get_lease_time_prepare(struct rpc_task
*task
,
7687 struct nfs4_get_lease_time_data
*data
=
7688 (struct nfs4_get_lease_time_data
*)calldata
;
7690 dprintk("--> %s\n", __func__
);
7691 /* just setup sequence, do not trigger session recovery
7692 since we're invoked within one */
7693 nfs4_setup_sequence(data
->clp
,
7694 &data
->args
->la_seq_args
,
7695 &data
->res
->lr_seq_res
,
7697 dprintk("<-- %s\n", __func__
);
7701 * Called from nfs4_state_manager thread for session setup, so don't recover
7702 * from sequence operation or clientid errors.
7704 static void nfs4_get_lease_time_done(struct rpc_task
*task
, void *calldata
)
7706 struct nfs4_get_lease_time_data
*data
=
7707 (struct nfs4_get_lease_time_data
*)calldata
;
7709 dprintk("--> %s\n", __func__
);
7710 if (!nfs41_sequence_done(task
, &data
->res
->lr_seq_res
))
7712 switch (task
->tk_status
) {
7713 case -NFS4ERR_DELAY
:
7714 case -NFS4ERR_GRACE
:
7715 dprintk("%s Retry: tk_status %d\n", __func__
, task
->tk_status
);
7716 rpc_delay(task
, NFS4_POLL_RETRY_MIN
);
7717 task
->tk_status
= 0;
7719 case -NFS4ERR_RETRY_UNCACHED_REP
:
7720 rpc_restart_call_prepare(task
);
7723 dprintk("<-- %s\n", __func__
);
7726 static const struct rpc_call_ops nfs4_get_lease_time_ops
= {
7727 .rpc_call_prepare
= nfs4_get_lease_time_prepare
,
7728 .rpc_call_done
= nfs4_get_lease_time_done
,
7731 int nfs4_proc_get_lease_time(struct nfs_client
*clp
, struct nfs_fsinfo
*fsinfo
)
7733 struct rpc_task
*task
;
7734 struct nfs4_get_lease_time_args args
;
7735 struct nfs4_get_lease_time_res res
= {
7736 .lr_fsinfo
= fsinfo
,
7738 struct nfs4_get_lease_time_data data
= {
7743 struct rpc_message msg
= {
7744 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GET_LEASE_TIME
],
7748 struct rpc_task_setup task_setup
= {
7749 .rpc_client
= clp
->cl_rpcclient
,
7750 .rpc_message
= &msg
,
7751 .callback_ops
= &nfs4_get_lease_time_ops
,
7752 .callback_data
= &data
,
7753 .flags
= RPC_TASK_TIMEOUT
,
7757 nfs4_init_sequence(&args
.la_seq_args
, &res
.lr_seq_res
, 0);
7758 nfs4_set_sequence_privileged(&args
.la_seq_args
);
7759 task
= rpc_run_task(&task_setup
);
7762 return PTR_ERR(task
);
7764 status
= task
->tk_status
;
7770 * Initialize the values to be used by the client in CREATE_SESSION
7771 * If nfs4_init_session set the fore channel request and response sizes,
7774 * Set the back channel max_resp_sz_cached to zero to force the client to
7775 * always set csa_cachethis to FALSE because the current implementation
7776 * of the back channel DRC only supports caching the CB_SEQUENCE operation.
7778 static void nfs4_init_channel_attrs(struct nfs41_create_session_args
*args
,
7779 struct rpc_clnt
*clnt
)
7781 unsigned int max_rqst_sz
, max_resp_sz
;
7782 unsigned int max_bc_payload
= rpc_max_bc_payload(clnt
);
7784 max_rqst_sz
= NFS_MAX_FILE_IO_SIZE
+ nfs41_maxwrite_overhead
;
7785 max_resp_sz
= NFS_MAX_FILE_IO_SIZE
+ nfs41_maxread_overhead
;
7787 /* Fore channel attributes */
7788 args
->fc_attrs
.max_rqst_sz
= max_rqst_sz
;
7789 args
->fc_attrs
.max_resp_sz
= max_resp_sz
;
7790 args
->fc_attrs
.max_ops
= NFS4_MAX_OPS
;
7791 args
->fc_attrs
.max_reqs
= max_session_slots
;
7793 dprintk("%s: Fore Channel : max_rqst_sz=%u max_resp_sz=%u "
7794 "max_ops=%u max_reqs=%u\n",
7796 args
->fc_attrs
.max_rqst_sz
, args
->fc_attrs
.max_resp_sz
,
7797 args
->fc_attrs
.max_ops
, args
->fc_attrs
.max_reqs
);
7799 /* Back channel attributes */
7800 args
->bc_attrs
.max_rqst_sz
= max_bc_payload
;
7801 args
->bc_attrs
.max_resp_sz
= max_bc_payload
;
7802 args
->bc_attrs
.max_resp_sz_cached
= 0;
7803 args
->bc_attrs
.max_ops
= NFS4_MAX_BACK_CHANNEL_OPS
;
7804 args
->bc_attrs
.max_reqs
= min_t(unsigned short, max_session_cb_slots
, 1);
7806 dprintk("%s: Back Channel : max_rqst_sz=%u max_resp_sz=%u "
7807 "max_resp_sz_cached=%u max_ops=%u max_reqs=%u\n",
7809 args
->bc_attrs
.max_rqst_sz
, args
->bc_attrs
.max_resp_sz
,
7810 args
->bc_attrs
.max_resp_sz_cached
, args
->bc_attrs
.max_ops
,
7811 args
->bc_attrs
.max_reqs
);
7814 static int nfs4_verify_fore_channel_attrs(struct nfs41_create_session_args
*args
,
7815 struct nfs41_create_session_res
*res
)
7817 struct nfs4_channel_attrs
*sent
= &args
->fc_attrs
;
7818 struct nfs4_channel_attrs
*rcvd
= &res
->fc_attrs
;
7820 if (rcvd
->max_resp_sz
> sent
->max_resp_sz
)
7823 * Our requested max_ops is the minimum we need; we're not
7824 * prepared to break up compounds into smaller pieces than that.
7825 * So, no point even trying to continue if the server won't
7828 if (rcvd
->max_ops
< sent
->max_ops
)
7830 if (rcvd
->max_reqs
== 0)
7832 if (rcvd
->max_reqs
> NFS4_MAX_SLOT_TABLE
)
7833 rcvd
->max_reqs
= NFS4_MAX_SLOT_TABLE
;
7837 static int nfs4_verify_back_channel_attrs(struct nfs41_create_session_args
*args
,
7838 struct nfs41_create_session_res
*res
)
7840 struct nfs4_channel_attrs
*sent
= &args
->bc_attrs
;
7841 struct nfs4_channel_attrs
*rcvd
= &res
->bc_attrs
;
7843 if (!(res
->flags
& SESSION4_BACK_CHAN
))
7845 if (rcvd
->max_rqst_sz
> sent
->max_rqst_sz
)
7847 if (rcvd
->max_resp_sz
< sent
->max_resp_sz
)
7849 if (rcvd
->max_resp_sz_cached
> sent
->max_resp_sz_cached
)
7851 if (rcvd
->max_ops
> sent
->max_ops
)
7853 if (rcvd
->max_reqs
> sent
->max_reqs
)
7859 static int nfs4_verify_channel_attrs(struct nfs41_create_session_args
*args
,
7860 struct nfs41_create_session_res
*res
)
7864 ret
= nfs4_verify_fore_channel_attrs(args
, res
);
7867 return nfs4_verify_back_channel_attrs(args
, res
);
7870 static void nfs4_update_session(struct nfs4_session
*session
,
7871 struct nfs41_create_session_res
*res
)
7873 nfs4_copy_sessionid(&session
->sess_id
, &res
->sessionid
);
7874 /* Mark client id and session as being confirmed */
7875 session
->clp
->cl_exchange_flags
|= EXCHGID4_FLAG_CONFIRMED_R
;
7876 set_bit(NFS4_SESSION_ESTABLISHED
, &session
->session_state
);
7877 session
->flags
= res
->flags
;
7878 memcpy(&session
->fc_attrs
, &res
->fc_attrs
, sizeof(session
->fc_attrs
));
7879 if (res
->flags
& SESSION4_BACK_CHAN
)
7880 memcpy(&session
->bc_attrs
, &res
->bc_attrs
,
7881 sizeof(session
->bc_attrs
));
7884 static int _nfs4_proc_create_session(struct nfs_client
*clp
,
7885 struct rpc_cred
*cred
)
7887 struct nfs4_session
*session
= clp
->cl_session
;
7888 struct nfs41_create_session_args args
= {
7890 .clientid
= clp
->cl_clientid
,
7891 .seqid
= clp
->cl_seqid
,
7892 .cb_program
= NFS4_CALLBACK
,
7894 struct nfs41_create_session_res res
;
7896 struct rpc_message msg
= {
7897 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_CREATE_SESSION
],
7904 nfs4_init_channel_attrs(&args
, clp
->cl_rpcclient
);
7905 args
.flags
= (SESSION4_PERSIST
| SESSION4_BACK_CHAN
);
7907 status
= rpc_call_sync(session
->clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
7908 trace_nfs4_create_session(clp
, status
);
7911 case -NFS4ERR_STALE_CLIENTID
:
7912 case -NFS4ERR_DELAY
:
7921 /* Verify the session's negotiated channel_attrs values */
7922 status
= nfs4_verify_channel_attrs(&args
, &res
);
7923 /* Increment the clientid slot sequence id */
7926 nfs4_update_session(session
, &res
);
7933 * Issues a CREATE_SESSION operation to the server.
7934 * It is the responsibility of the caller to verify the session is
7935 * expired before calling this routine.
7937 int nfs4_proc_create_session(struct nfs_client
*clp
, struct rpc_cred
*cred
)
7941 struct nfs4_session
*session
= clp
->cl_session
;
7943 dprintk("--> %s clp=%p session=%p\n", __func__
, clp
, session
);
7945 status
= _nfs4_proc_create_session(clp
, cred
);
7949 /* Init or reset the session slot tables */
7950 status
= nfs4_setup_session_slot_tables(session
);
7951 dprintk("slot table setup returned %d\n", status
);
7955 ptr
= (unsigned *)&session
->sess_id
.data
[0];
7956 dprintk("%s client>seqid %d sessionid %u:%u:%u:%u\n", __func__
,
7957 clp
->cl_seqid
, ptr
[0], ptr
[1], ptr
[2], ptr
[3]);
7959 dprintk("<-- %s\n", __func__
);
7964 * Issue the over-the-wire RPC DESTROY_SESSION.
7965 * The caller must serialize access to this routine.
7967 int nfs4_proc_destroy_session(struct nfs4_session
*session
,
7968 struct rpc_cred
*cred
)
7970 struct rpc_message msg
= {
7971 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_DESTROY_SESSION
],
7972 .rpc_argp
= session
,
7977 dprintk("--> nfs4_proc_destroy_session\n");
7979 /* session is still being setup */
7980 if (!test_and_clear_bit(NFS4_SESSION_ESTABLISHED
, &session
->session_state
))
7983 status
= rpc_call_sync(session
->clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
7984 trace_nfs4_destroy_session(session
->clp
, status
);
7987 dprintk("NFS: Got error %d from the server on DESTROY_SESSION. "
7988 "Session has been destroyed regardless...\n", status
);
7990 dprintk("<-- nfs4_proc_destroy_session\n");
7995 * Renew the cl_session lease.
7997 struct nfs4_sequence_data
{
7998 struct nfs_client
*clp
;
7999 struct nfs4_sequence_args args
;
8000 struct nfs4_sequence_res res
;
8003 static void nfs41_sequence_release(void *data
)
8005 struct nfs4_sequence_data
*calldata
= data
;
8006 struct nfs_client
*clp
= calldata
->clp
;
8008 if (atomic_read(&clp
->cl_count
) > 1)
8009 nfs4_schedule_state_renewal(clp
);
8010 nfs_put_client(clp
);
8014 static int nfs41_sequence_handle_errors(struct rpc_task
*task
, struct nfs_client
*clp
)
8016 switch(task
->tk_status
) {
8017 case -NFS4ERR_DELAY
:
8018 rpc_delay(task
, NFS4_POLL_RETRY_MAX
);
8021 nfs4_schedule_lease_recovery(clp
);
8026 static void nfs41_sequence_call_done(struct rpc_task
*task
, void *data
)
8028 struct nfs4_sequence_data
*calldata
= data
;
8029 struct nfs_client
*clp
= calldata
->clp
;
8031 if (!nfs41_sequence_done(task
, task
->tk_msg
.rpc_resp
))
8034 trace_nfs4_sequence(clp
, task
->tk_status
);
8035 if (task
->tk_status
< 0) {
8036 dprintk("%s ERROR %d\n", __func__
, task
->tk_status
);
8037 if (atomic_read(&clp
->cl_count
) == 1)
8040 if (nfs41_sequence_handle_errors(task
, clp
) == -EAGAIN
) {
8041 rpc_restart_call_prepare(task
);
8045 dprintk("%s rpc_cred %p\n", __func__
, task
->tk_msg
.rpc_cred
);
8047 dprintk("<-- %s\n", __func__
);
8050 static void nfs41_sequence_prepare(struct rpc_task
*task
, void *data
)
8052 struct nfs4_sequence_data
*calldata
= data
;
8053 struct nfs_client
*clp
= calldata
->clp
;
8054 struct nfs4_sequence_args
*args
;
8055 struct nfs4_sequence_res
*res
;
8057 args
= task
->tk_msg
.rpc_argp
;
8058 res
= task
->tk_msg
.rpc_resp
;
8060 nfs4_setup_sequence(clp
, args
, res
, task
);
8063 static const struct rpc_call_ops nfs41_sequence_ops
= {
8064 .rpc_call_done
= nfs41_sequence_call_done
,
8065 .rpc_call_prepare
= nfs41_sequence_prepare
,
8066 .rpc_release
= nfs41_sequence_release
,
8069 static struct rpc_task
*_nfs41_proc_sequence(struct nfs_client
*clp
,
8070 struct rpc_cred
*cred
,
8073 struct nfs4_sequence_data
*calldata
;
8074 struct rpc_message msg
= {
8075 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SEQUENCE
],
8078 struct rpc_task_setup task_setup_data
= {
8079 .rpc_client
= clp
->cl_rpcclient
,
8080 .rpc_message
= &msg
,
8081 .callback_ops
= &nfs41_sequence_ops
,
8082 .flags
= RPC_TASK_ASYNC
| RPC_TASK_TIMEOUT
,
8085 if (!atomic_inc_not_zero(&clp
->cl_count
))
8086 return ERR_PTR(-EIO
);
8087 calldata
= kzalloc(sizeof(*calldata
), GFP_NOFS
);
8088 if (calldata
== NULL
) {
8089 nfs_put_client(clp
);
8090 return ERR_PTR(-ENOMEM
);
8092 nfs4_init_sequence(&calldata
->args
, &calldata
->res
, 0);
8094 nfs4_set_sequence_privileged(&calldata
->args
);
8095 msg
.rpc_argp
= &calldata
->args
;
8096 msg
.rpc_resp
= &calldata
->res
;
8097 calldata
->clp
= clp
;
8098 task_setup_data
.callback_data
= calldata
;
8100 return rpc_run_task(&task_setup_data
);
8103 static int nfs41_proc_async_sequence(struct nfs_client
*clp
, struct rpc_cred
*cred
, unsigned renew_flags
)
8105 struct rpc_task
*task
;
8108 if ((renew_flags
& NFS4_RENEW_TIMEOUT
) == 0)
8110 task
= _nfs41_proc_sequence(clp
, cred
, false);
8112 ret
= PTR_ERR(task
);
8114 rpc_put_task_async(task
);
8115 dprintk("<-- %s status=%d\n", __func__
, ret
);
8119 static int nfs4_proc_sequence(struct nfs_client
*clp
, struct rpc_cred
*cred
)
8121 struct rpc_task
*task
;
8124 task
= _nfs41_proc_sequence(clp
, cred
, true);
8126 ret
= PTR_ERR(task
);
8129 ret
= rpc_wait_for_completion_task(task
);
8131 ret
= task
->tk_status
;
8134 dprintk("<-- %s status=%d\n", __func__
, ret
);
8138 struct nfs4_reclaim_complete_data
{
8139 struct nfs_client
*clp
;
8140 struct nfs41_reclaim_complete_args arg
;
8141 struct nfs41_reclaim_complete_res res
;
8144 static void nfs4_reclaim_complete_prepare(struct rpc_task
*task
, void *data
)
8146 struct nfs4_reclaim_complete_data
*calldata
= data
;
8148 nfs4_setup_sequence(calldata
->clp
,
8149 &calldata
->arg
.seq_args
,
8150 &calldata
->res
.seq_res
,
8154 static int nfs41_reclaim_complete_handle_errors(struct rpc_task
*task
, struct nfs_client
*clp
)
8156 switch(task
->tk_status
) {
8158 case -NFS4ERR_COMPLETE_ALREADY
:
8159 case -NFS4ERR_WRONG_CRED
: /* What to do here? */
8161 case -NFS4ERR_DELAY
:
8162 rpc_delay(task
, NFS4_POLL_RETRY_MAX
);
8164 case -NFS4ERR_RETRY_UNCACHED_REP
:
8166 case -NFS4ERR_BADSESSION
:
8167 case -NFS4ERR_DEADSESSION
:
8168 case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION
:
8169 nfs4_schedule_session_recovery(clp
->cl_session
,
8173 nfs4_schedule_lease_recovery(clp
);
8178 static void nfs4_reclaim_complete_done(struct rpc_task
*task
, void *data
)
8180 struct nfs4_reclaim_complete_data
*calldata
= data
;
8181 struct nfs_client
*clp
= calldata
->clp
;
8182 struct nfs4_sequence_res
*res
= &calldata
->res
.seq_res
;
8184 dprintk("--> %s\n", __func__
);
8185 if (!nfs41_sequence_done(task
, res
))
8188 trace_nfs4_reclaim_complete(clp
, task
->tk_status
);
8189 if (nfs41_reclaim_complete_handle_errors(task
, clp
) == -EAGAIN
) {
8190 rpc_restart_call_prepare(task
);
8193 dprintk("<-- %s\n", __func__
);
8196 static void nfs4_free_reclaim_complete_data(void *data
)
8198 struct nfs4_reclaim_complete_data
*calldata
= data
;
8203 static const struct rpc_call_ops nfs4_reclaim_complete_call_ops
= {
8204 .rpc_call_prepare
= nfs4_reclaim_complete_prepare
,
8205 .rpc_call_done
= nfs4_reclaim_complete_done
,
8206 .rpc_release
= nfs4_free_reclaim_complete_data
,
8210 * Issue a global reclaim complete.
8212 static int nfs41_proc_reclaim_complete(struct nfs_client
*clp
,
8213 struct rpc_cred
*cred
)
8215 struct nfs4_reclaim_complete_data
*calldata
;
8216 struct rpc_task
*task
;
8217 struct rpc_message msg
= {
8218 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RECLAIM_COMPLETE
],
8221 struct rpc_task_setup task_setup_data
= {
8222 .rpc_client
= clp
->cl_rpcclient
,
8223 .rpc_message
= &msg
,
8224 .callback_ops
= &nfs4_reclaim_complete_call_ops
,
8225 .flags
= RPC_TASK_ASYNC
,
8227 int status
= -ENOMEM
;
8229 dprintk("--> %s\n", __func__
);
8230 calldata
= kzalloc(sizeof(*calldata
), GFP_NOFS
);
8231 if (calldata
== NULL
)
8233 calldata
->clp
= clp
;
8234 calldata
->arg
.one_fs
= 0;
8236 nfs4_init_sequence(&calldata
->arg
.seq_args
, &calldata
->res
.seq_res
, 0);
8237 nfs4_set_sequence_privileged(&calldata
->arg
.seq_args
);
8238 msg
.rpc_argp
= &calldata
->arg
;
8239 msg
.rpc_resp
= &calldata
->res
;
8240 task_setup_data
.callback_data
= calldata
;
8241 task
= rpc_run_task(&task_setup_data
);
8243 status
= PTR_ERR(task
);
8246 status
= rpc_wait_for_completion_task(task
);
8248 status
= task
->tk_status
;
8251 dprintk("<-- %s status=%d\n", __func__
, status
);
8256 nfs4_layoutget_prepare(struct rpc_task
*task
, void *calldata
)
8258 struct nfs4_layoutget
*lgp
= calldata
;
8259 struct nfs_server
*server
= NFS_SERVER(lgp
->args
.inode
);
8261 dprintk("--> %s\n", __func__
);
8262 nfs4_setup_sequence(server
->nfs_client
, &lgp
->args
.seq_args
,
8263 &lgp
->res
.seq_res
, task
);
8264 dprintk("<-- %s\n", __func__
);
8267 static void nfs4_layoutget_done(struct rpc_task
*task
, void *calldata
)
8269 struct nfs4_layoutget
*lgp
= calldata
;
8271 dprintk("--> %s\n", __func__
);
8272 nfs41_sequence_process(task
, &lgp
->res
.seq_res
);
8273 dprintk("<-- %s\n", __func__
);
8277 nfs4_layoutget_handle_exception(struct rpc_task
*task
,
8278 struct nfs4_layoutget
*lgp
, struct nfs4_exception
*exception
)
8280 struct inode
*inode
= lgp
->args
.inode
;
8281 struct nfs_server
*server
= NFS_SERVER(inode
);
8282 struct pnfs_layout_hdr
*lo
;
8283 int nfs4err
= task
->tk_status
;
8284 int err
, status
= 0;
8287 dprintk("--> %s tk_status => %d\n", __func__
, -task
->tk_status
);
8294 * NFS4ERR_LAYOUTUNAVAILABLE means we are not supposed to use pnfs
8295 * on the file. set tk_status to -ENODATA to tell upper layer to
8298 case -NFS4ERR_LAYOUTUNAVAILABLE
:
8302 * NFS4ERR_BADLAYOUT means the MDS cannot return a layout of
8303 * length lgp->args.minlength != 0 (see RFC5661 section 18.43.3).
8305 case -NFS4ERR_BADLAYOUT
:
8306 status
= -EOVERFLOW
;
8309 * NFS4ERR_LAYOUTTRYLATER is a conflict with another client
8310 * (or clients) writing to the same RAID stripe except when
8311 * the minlength argument is 0 (see RFC5661 section 18.43.3).
8313 * Treat it like we would RECALLCONFLICT -- we retry for a little
8314 * while, and then eventually give up.
8316 case -NFS4ERR_LAYOUTTRYLATER
:
8317 if (lgp
->args
.minlength
== 0) {
8318 status
= -EOVERFLOW
;
8323 case -NFS4ERR_RECALLCONFLICT
:
8324 status
= -ERECALLCONFLICT
;
8326 case -NFS4ERR_DELEG_REVOKED
:
8327 case -NFS4ERR_ADMIN_REVOKED
:
8328 case -NFS4ERR_EXPIRED
:
8329 case -NFS4ERR_BAD_STATEID
:
8330 exception
->timeout
= 0;
8331 spin_lock(&inode
->i_lock
);
8332 lo
= NFS_I(inode
)->layout
;
8333 /* If the open stateid was bad, then recover it. */
8334 if (!lo
|| test_bit(NFS_LAYOUT_INVALID_STID
, &lo
->plh_flags
) ||
8335 nfs4_stateid_match_other(&lgp
->args
.stateid
,
8336 &lgp
->args
.ctx
->state
->stateid
)) {
8337 spin_unlock(&inode
->i_lock
);
8338 exception
->state
= lgp
->args
.ctx
->state
;
8339 exception
->stateid
= &lgp
->args
.stateid
;
8344 * Mark the bad layout state as invalid, then retry
8346 pnfs_mark_layout_stateid_invalid(lo
, &head
);
8347 spin_unlock(&inode
->i_lock
);
8348 nfs_commit_inode(inode
, 0);
8349 pnfs_free_lseg_list(&head
);
8354 nfs4_sequence_free_slot(&lgp
->res
.seq_res
);
8355 err
= nfs4_handle_exception(server
, nfs4err
, exception
);
8357 if (exception
->retry
)
8363 dprintk("<-- %s\n", __func__
);
8367 static size_t max_response_pages(struct nfs_server
*server
)
8369 u32 max_resp_sz
= server
->nfs_client
->cl_session
->fc_attrs
.max_resp_sz
;
8370 return nfs_page_array_len(0, max_resp_sz
);
8373 static void nfs4_free_pages(struct page
**pages
, size_t size
)
8380 for (i
= 0; i
< size
; i
++) {
8383 __free_page(pages
[i
]);
8388 static struct page
**nfs4_alloc_pages(size_t size
, gfp_t gfp_flags
)
8390 struct page
**pages
;
8393 pages
= kcalloc(size
, sizeof(struct page
*), gfp_flags
);
8395 dprintk("%s: can't alloc array of %zu pages\n", __func__
, size
);
8399 for (i
= 0; i
< size
; i
++) {
8400 pages
[i
] = alloc_page(gfp_flags
);
8402 dprintk("%s: failed to allocate page\n", __func__
);
8403 nfs4_free_pages(pages
, size
);
8411 static void nfs4_layoutget_release(void *calldata
)
8413 struct nfs4_layoutget
*lgp
= calldata
;
8414 struct inode
*inode
= lgp
->args
.inode
;
8415 struct nfs_server
*server
= NFS_SERVER(inode
);
8416 size_t max_pages
= max_response_pages(server
);
8418 dprintk("--> %s\n", __func__
);
8419 nfs4_free_pages(lgp
->args
.layout
.pages
, max_pages
);
8420 pnfs_put_layout_hdr(NFS_I(inode
)->layout
);
8421 put_nfs_open_context(lgp
->args
.ctx
);
8423 dprintk("<-- %s\n", __func__
);
8426 static const struct rpc_call_ops nfs4_layoutget_call_ops
= {
8427 .rpc_call_prepare
= nfs4_layoutget_prepare
,
8428 .rpc_call_done
= nfs4_layoutget_done
,
8429 .rpc_release
= nfs4_layoutget_release
,
8432 struct pnfs_layout_segment
*
8433 nfs4_proc_layoutget(struct nfs4_layoutget
*lgp
, long *timeout
, gfp_t gfp_flags
)
8435 struct inode
*inode
= lgp
->args
.inode
;
8436 struct nfs_server
*server
= NFS_SERVER(inode
);
8437 size_t max_pages
= max_response_pages(server
);
8438 struct rpc_task
*task
;
8439 struct rpc_message msg
= {
8440 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LAYOUTGET
],
8441 .rpc_argp
= &lgp
->args
,
8442 .rpc_resp
= &lgp
->res
,
8443 .rpc_cred
= lgp
->cred
,
8445 struct rpc_task_setup task_setup_data
= {
8446 .rpc_client
= server
->client
,
8447 .rpc_message
= &msg
,
8448 .callback_ops
= &nfs4_layoutget_call_ops
,
8449 .callback_data
= lgp
,
8450 .flags
= RPC_TASK_ASYNC
,
8452 struct pnfs_layout_segment
*lseg
= NULL
;
8453 struct nfs4_exception exception
= {
8455 .timeout
= *timeout
,
8459 dprintk("--> %s\n", __func__
);
8461 /* nfs4_layoutget_release calls pnfs_put_layout_hdr */
8462 pnfs_get_layout_hdr(NFS_I(inode
)->layout
);
8464 lgp
->args
.layout
.pages
= nfs4_alloc_pages(max_pages
, gfp_flags
);
8465 if (!lgp
->args
.layout
.pages
) {
8466 nfs4_layoutget_release(lgp
);
8467 return ERR_PTR(-ENOMEM
);
8469 lgp
->args
.layout
.pglen
= max_pages
* PAGE_SIZE
;
8471 lgp
->res
.layoutp
= &lgp
->args
.layout
;
8472 lgp
->res
.seq_res
.sr_slot
= NULL
;
8473 nfs4_init_sequence(&lgp
->args
.seq_args
, &lgp
->res
.seq_res
, 0);
8475 task
= rpc_run_task(&task_setup_data
);
8477 return ERR_CAST(task
);
8478 status
= rpc_wait_for_completion_task(task
);
8480 status
= nfs4_layoutget_handle_exception(task
, lgp
, &exception
);
8481 *timeout
= exception
.timeout
;
8484 trace_nfs4_layoutget(lgp
->args
.ctx
,
8490 /* if layoutp->len is 0, nfs4_layoutget_prepare called rpc_exit */
8491 if (status
== 0 && lgp
->res
.layoutp
->len
)
8492 lseg
= pnfs_layout_process(lgp
);
8493 nfs4_sequence_free_slot(&lgp
->res
.seq_res
);
8495 dprintk("<-- %s status=%d\n", __func__
, status
);
8497 return ERR_PTR(status
);
8502 nfs4_layoutreturn_prepare(struct rpc_task
*task
, void *calldata
)
8504 struct nfs4_layoutreturn
*lrp
= calldata
;
8506 dprintk("--> %s\n", __func__
);
8507 nfs4_setup_sequence(lrp
->clp
,
8508 &lrp
->args
.seq_args
,
8513 static void nfs4_layoutreturn_done(struct rpc_task
*task
, void *calldata
)
8515 struct nfs4_layoutreturn
*lrp
= calldata
;
8516 struct nfs_server
*server
;
8518 dprintk("--> %s\n", __func__
);
8520 if (!nfs41_sequence_process(task
, &lrp
->res
.seq_res
))
8523 server
= NFS_SERVER(lrp
->args
.inode
);
8524 switch (task
->tk_status
) {
8526 task
->tk_status
= 0;
8529 case -NFS4ERR_DELAY
:
8530 if (nfs4_async_handle_error(task
, server
, NULL
, NULL
) != -EAGAIN
)
8532 nfs4_sequence_free_slot(&lrp
->res
.seq_res
);
8533 rpc_restart_call_prepare(task
);
8536 dprintk("<-- %s\n", __func__
);
8539 static void nfs4_layoutreturn_release(void *calldata
)
8541 struct nfs4_layoutreturn
*lrp
= calldata
;
8542 struct pnfs_layout_hdr
*lo
= lrp
->args
.layout
;
8544 dprintk("--> %s\n", __func__
);
8545 pnfs_layoutreturn_free_lsegs(lo
, &lrp
->args
.stateid
, &lrp
->args
.range
,
8546 lrp
->res
.lrs_present
? &lrp
->res
.stateid
: NULL
);
8547 nfs4_sequence_free_slot(&lrp
->res
.seq_res
);
8548 if (lrp
->ld_private
.ops
&& lrp
->ld_private
.ops
->free
)
8549 lrp
->ld_private
.ops
->free(&lrp
->ld_private
);
8550 pnfs_put_layout_hdr(lrp
->args
.layout
);
8551 nfs_iput_and_deactive(lrp
->inode
);
8553 dprintk("<-- %s\n", __func__
);
8556 static const struct rpc_call_ops nfs4_layoutreturn_call_ops
= {
8557 .rpc_call_prepare
= nfs4_layoutreturn_prepare
,
8558 .rpc_call_done
= nfs4_layoutreturn_done
,
8559 .rpc_release
= nfs4_layoutreturn_release
,
8562 int nfs4_proc_layoutreturn(struct nfs4_layoutreturn
*lrp
, bool sync
)
8564 struct rpc_task
*task
;
8565 struct rpc_message msg
= {
8566 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LAYOUTRETURN
],
8567 .rpc_argp
= &lrp
->args
,
8568 .rpc_resp
= &lrp
->res
,
8569 .rpc_cred
= lrp
->cred
,
8571 struct rpc_task_setup task_setup_data
= {
8572 .rpc_client
= NFS_SERVER(lrp
->args
.inode
)->client
,
8573 .rpc_message
= &msg
,
8574 .callback_ops
= &nfs4_layoutreturn_call_ops
,
8575 .callback_data
= lrp
,
8579 nfs4_state_protect(NFS_SERVER(lrp
->args
.inode
)->nfs_client
,
8580 NFS_SP4_MACH_CRED_PNFS_CLEANUP
,
8581 &task_setup_data
.rpc_client
, &msg
);
8583 dprintk("--> %s\n", __func__
);
8585 lrp
->inode
= nfs_igrab_and_active(lrp
->args
.inode
);
8587 nfs4_layoutreturn_release(lrp
);
8590 task_setup_data
.flags
|= RPC_TASK_ASYNC
;
8592 nfs4_init_sequence(&lrp
->args
.seq_args
, &lrp
->res
.seq_res
, 1);
8593 task
= rpc_run_task(&task_setup_data
);
8595 return PTR_ERR(task
);
8597 status
= task
->tk_status
;
8598 trace_nfs4_layoutreturn(lrp
->args
.inode
, &lrp
->args
.stateid
, status
);
8599 dprintk("<-- %s status=%d\n", __func__
, status
);
8605 _nfs4_proc_getdeviceinfo(struct nfs_server
*server
,
8606 struct pnfs_device
*pdev
,
8607 struct rpc_cred
*cred
)
8609 struct nfs4_getdeviceinfo_args args
= {
8611 .notify_types
= NOTIFY_DEVICEID4_CHANGE
|
8612 NOTIFY_DEVICEID4_DELETE
,
8614 struct nfs4_getdeviceinfo_res res
= {
8617 struct rpc_message msg
= {
8618 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GETDEVICEINFO
],
8625 dprintk("--> %s\n", __func__
);
8626 status
= nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
8627 if (res
.notification
& ~args
.notify_types
)
8628 dprintk("%s: unsupported notification\n", __func__
);
8629 if (res
.notification
!= args
.notify_types
)
8632 dprintk("<-- %s status=%d\n", __func__
, status
);
8637 int nfs4_proc_getdeviceinfo(struct nfs_server
*server
,
8638 struct pnfs_device
*pdev
,
8639 struct rpc_cred
*cred
)
8641 struct nfs4_exception exception
= { };
8645 err
= nfs4_handle_exception(server
,
8646 _nfs4_proc_getdeviceinfo(server
, pdev
, cred
),
8648 } while (exception
.retry
);
8651 EXPORT_SYMBOL_GPL(nfs4_proc_getdeviceinfo
);
8653 static void nfs4_layoutcommit_prepare(struct rpc_task
*task
, void *calldata
)
8655 struct nfs4_layoutcommit_data
*data
= calldata
;
8656 struct nfs_server
*server
= NFS_SERVER(data
->args
.inode
);
8658 nfs4_setup_sequence(server
->nfs_client
,
8659 &data
->args
.seq_args
,
8665 nfs4_layoutcommit_done(struct rpc_task
*task
, void *calldata
)
8667 struct nfs4_layoutcommit_data
*data
= calldata
;
8668 struct nfs_server
*server
= NFS_SERVER(data
->args
.inode
);
8670 if (!nfs41_sequence_done(task
, &data
->res
.seq_res
))
8673 switch (task
->tk_status
) { /* Just ignore these failures */
8674 case -NFS4ERR_DELEG_REVOKED
: /* layout was recalled */
8675 case -NFS4ERR_BADIOMODE
: /* no IOMODE_RW layout for range */
8676 case -NFS4ERR_BADLAYOUT
: /* no layout */
8677 case -NFS4ERR_GRACE
: /* loca_recalim always false */
8678 task
->tk_status
= 0;
8682 if (nfs4_async_handle_error(task
, server
, NULL
, NULL
) == -EAGAIN
) {
8683 rpc_restart_call_prepare(task
);
8689 static void nfs4_layoutcommit_release(void *calldata
)
8691 struct nfs4_layoutcommit_data
*data
= calldata
;
8693 pnfs_cleanup_layoutcommit(data
);
8694 nfs_post_op_update_inode_force_wcc(data
->args
.inode
,
8696 put_rpccred(data
->cred
);
8697 nfs_iput_and_deactive(data
->inode
);
8701 static const struct rpc_call_ops nfs4_layoutcommit_ops
= {
8702 .rpc_call_prepare
= nfs4_layoutcommit_prepare
,
8703 .rpc_call_done
= nfs4_layoutcommit_done
,
8704 .rpc_release
= nfs4_layoutcommit_release
,
8708 nfs4_proc_layoutcommit(struct nfs4_layoutcommit_data
*data
, bool sync
)
8710 struct rpc_message msg
= {
8711 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LAYOUTCOMMIT
],
8712 .rpc_argp
= &data
->args
,
8713 .rpc_resp
= &data
->res
,
8714 .rpc_cred
= data
->cred
,
8716 struct rpc_task_setup task_setup_data
= {
8717 .task
= &data
->task
,
8718 .rpc_client
= NFS_CLIENT(data
->args
.inode
),
8719 .rpc_message
= &msg
,
8720 .callback_ops
= &nfs4_layoutcommit_ops
,
8721 .callback_data
= data
,
8723 struct rpc_task
*task
;
8726 dprintk("NFS: initiating layoutcommit call. sync %d "
8727 "lbw: %llu inode %lu\n", sync
,
8728 data
->args
.lastbytewritten
,
8729 data
->args
.inode
->i_ino
);
8732 data
->inode
= nfs_igrab_and_active(data
->args
.inode
);
8733 if (data
->inode
== NULL
) {
8734 nfs4_layoutcommit_release(data
);
8737 task_setup_data
.flags
= RPC_TASK_ASYNC
;
8739 nfs4_init_sequence(&data
->args
.seq_args
, &data
->res
.seq_res
, 1);
8740 task
= rpc_run_task(&task_setup_data
);
8742 return PTR_ERR(task
);
8744 status
= task
->tk_status
;
8745 trace_nfs4_layoutcommit(data
->args
.inode
, &data
->args
.stateid
, status
);
8746 dprintk("%s: status %d\n", __func__
, status
);
8752 * Use the state managment nfs_client cl_rpcclient, which uses krb5i (if
8753 * possible) as per RFC3530bis and RFC5661 Security Considerations sections
8756 _nfs41_proc_secinfo_no_name(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
8757 struct nfs_fsinfo
*info
,
8758 struct nfs4_secinfo_flavors
*flavors
, bool use_integrity
)
8760 struct nfs41_secinfo_no_name_args args
= {
8761 .style
= SECINFO_STYLE_CURRENT_FH
,
8763 struct nfs4_secinfo_res res
= {
8766 struct rpc_message msg
= {
8767 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SECINFO_NO_NAME
],
8771 struct rpc_clnt
*clnt
= server
->client
;
8772 struct rpc_cred
*cred
= NULL
;
8775 if (use_integrity
) {
8776 clnt
= server
->nfs_client
->cl_rpcclient
;
8777 cred
= nfs4_get_clid_cred(server
->nfs_client
);
8778 msg
.rpc_cred
= cred
;
8781 dprintk("--> %s\n", __func__
);
8782 status
= nfs4_call_sync(clnt
, server
, &msg
, &args
.seq_args
,
8784 dprintk("<-- %s status=%d\n", __func__
, status
);
8793 nfs41_proc_secinfo_no_name(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
8794 struct nfs_fsinfo
*info
, struct nfs4_secinfo_flavors
*flavors
)
8796 struct nfs4_exception exception
= { };
8799 /* first try using integrity protection */
8800 err
= -NFS4ERR_WRONGSEC
;
8802 /* try to use integrity protection with machine cred */
8803 if (_nfs4_is_integrity_protected(server
->nfs_client
))
8804 err
= _nfs41_proc_secinfo_no_name(server
, fhandle
, info
,
8808 * if unable to use integrity protection, or SECINFO with
8809 * integrity protection returns NFS4ERR_WRONGSEC (which is
8810 * disallowed by spec, but exists in deployed servers) use
8811 * the current filesystem's rpc_client and the user cred.
8813 if (err
== -NFS4ERR_WRONGSEC
)
8814 err
= _nfs41_proc_secinfo_no_name(server
, fhandle
, info
,
8819 case -NFS4ERR_WRONGSEC
:
8823 err
= nfs4_handle_exception(server
, err
, &exception
);
8825 } while (exception
.retry
);
8831 nfs41_find_root_sec(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
8832 struct nfs_fsinfo
*info
)
8836 rpc_authflavor_t flavor
= RPC_AUTH_MAXFLAVOR
;
8837 struct nfs4_secinfo_flavors
*flavors
;
8838 struct nfs4_secinfo4
*secinfo
;
8841 page
= alloc_page(GFP_KERNEL
);
8847 flavors
= page_address(page
);
8848 err
= nfs41_proc_secinfo_no_name(server
, fhandle
, info
, flavors
);
8851 * Fall back on "guess and check" method if
8852 * the server doesn't support SECINFO_NO_NAME
8854 if (err
== -NFS4ERR_WRONGSEC
|| err
== -ENOTSUPP
) {
8855 err
= nfs4_find_root_sec(server
, fhandle
, info
);
8861 for (i
= 0; i
< flavors
->num_flavors
; i
++) {
8862 secinfo
= &flavors
->flavors
[i
];
8864 switch (secinfo
->flavor
) {
8868 flavor
= rpcauth_get_pseudoflavor(secinfo
->flavor
,
8869 &secinfo
->flavor_info
);
8872 flavor
= RPC_AUTH_MAXFLAVOR
;
8876 if (!nfs_auth_info_match(&server
->auth_info
, flavor
))
8877 flavor
= RPC_AUTH_MAXFLAVOR
;
8879 if (flavor
!= RPC_AUTH_MAXFLAVOR
) {
8880 err
= nfs4_lookup_root_sec(server
, fhandle
,
8887 if (flavor
== RPC_AUTH_MAXFLAVOR
)
8898 static int _nfs41_test_stateid(struct nfs_server
*server
,
8899 nfs4_stateid
*stateid
,
8900 struct rpc_cred
*cred
)
8903 struct nfs41_test_stateid_args args
= {
8906 struct nfs41_test_stateid_res res
;
8907 struct rpc_message msg
= {
8908 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_TEST_STATEID
],
8913 struct rpc_clnt
*rpc_client
= server
->client
;
8915 nfs4_state_protect(server
->nfs_client
, NFS_SP4_MACH_CRED_STATEID
,
8918 dprintk("NFS call test_stateid %p\n", stateid
);
8919 nfs4_init_sequence(&args
.seq_args
, &res
.seq_res
, 0);
8920 nfs4_set_sequence_privileged(&args
.seq_args
);
8921 status
= nfs4_call_sync_sequence(rpc_client
, server
, &msg
,
8922 &args
.seq_args
, &res
.seq_res
);
8923 if (status
!= NFS_OK
) {
8924 dprintk("NFS reply test_stateid: failed, %d\n", status
);
8927 dprintk("NFS reply test_stateid: succeeded, %d\n", -res
.status
);
8931 static void nfs4_handle_delay_or_session_error(struct nfs_server
*server
,
8932 int err
, struct nfs4_exception
*exception
)
8934 exception
->retry
= 0;
8936 case -NFS4ERR_DELAY
:
8937 case -NFS4ERR_RETRY_UNCACHED_REP
:
8938 nfs4_handle_exception(server
, err
, exception
);
8940 case -NFS4ERR_BADSESSION
:
8941 case -NFS4ERR_BADSLOT
:
8942 case -NFS4ERR_BAD_HIGH_SLOT
:
8943 case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION
:
8944 case -NFS4ERR_DEADSESSION
:
8945 nfs4_do_handle_exception(server
, err
, exception
);
8950 * nfs41_test_stateid - perform a TEST_STATEID operation
8952 * @server: server / transport on which to perform the operation
8953 * @stateid: state ID to test
8956 * Returns NFS_OK if the server recognizes that "stateid" is valid.
8957 * Otherwise a negative NFS4ERR value is returned if the operation
8958 * failed or the state ID is not currently valid.
8960 static int nfs41_test_stateid(struct nfs_server
*server
,
8961 nfs4_stateid
*stateid
,
8962 struct rpc_cred
*cred
)
8964 struct nfs4_exception exception
= { };
8967 err
= _nfs41_test_stateid(server
, stateid
, cred
);
8968 nfs4_handle_delay_or_session_error(server
, err
, &exception
);
8969 } while (exception
.retry
);
8973 struct nfs_free_stateid_data
{
8974 struct nfs_server
*server
;
8975 struct nfs41_free_stateid_args args
;
8976 struct nfs41_free_stateid_res res
;
8979 static void nfs41_free_stateid_prepare(struct rpc_task
*task
, void *calldata
)
8981 struct nfs_free_stateid_data
*data
= calldata
;
8982 nfs4_setup_sequence(data
->server
->nfs_client
,
8983 &data
->args
.seq_args
,
8988 static void nfs41_free_stateid_done(struct rpc_task
*task
, void *calldata
)
8990 struct nfs_free_stateid_data
*data
= calldata
;
8992 nfs41_sequence_done(task
, &data
->res
.seq_res
);
8994 switch (task
->tk_status
) {
8995 case -NFS4ERR_DELAY
:
8996 if (nfs4_async_handle_error(task
, data
->server
, NULL
, NULL
) == -EAGAIN
)
8997 rpc_restart_call_prepare(task
);
9001 static void nfs41_free_stateid_release(void *calldata
)
9006 static const struct rpc_call_ops nfs41_free_stateid_ops
= {
9007 .rpc_call_prepare
= nfs41_free_stateid_prepare
,
9008 .rpc_call_done
= nfs41_free_stateid_done
,
9009 .rpc_release
= nfs41_free_stateid_release
,
9012 static struct rpc_task
*_nfs41_free_stateid(struct nfs_server
*server
,
9013 const nfs4_stateid
*stateid
,
9014 struct rpc_cred
*cred
,
9017 struct rpc_message msg
= {
9018 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_FREE_STATEID
],
9021 struct rpc_task_setup task_setup
= {
9022 .rpc_client
= server
->client
,
9023 .rpc_message
= &msg
,
9024 .callback_ops
= &nfs41_free_stateid_ops
,
9025 .flags
= RPC_TASK_ASYNC
,
9027 struct nfs_free_stateid_data
*data
;
9029 nfs4_state_protect(server
->nfs_client
, NFS_SP4_MACH_CRED_STATEID
,
9030 &task_setup
.rpc_client
, &msg
);
9032 dprintk("NFS call free_stateid %p\n", stateid
);
9033 data
= kmalloc(sizeof(*data
), GFP_NOFS
);
9035 return ERR_PTR(-ENOMEM
);
9036 data
->server
= server
;
9037 nfs4_stateid_copy(&data
->args
.stateid
, stateid
);
9039 task_setup
.callback_data
= data
;
9041 msg
.rpc_argp
= &data
->args
;
9042 msg
.rpc_resp
= &data
->res
;
9043 nfs4_init_sequence(&data
->args
.seq_args
, &data
->res
.seq_res
, 1);
9045 nfs4_set_sequence_privileged(&data
->args
.seq_args
);
9047 return rpc_run_task(&task_setup
);
9051 * nfs41_free_stateid - perform a FREE_STATEID operation
9053 * @server: server / transport on which to perform the operation
9054 * @stateid: state ID to release
9056 * @is_recovery: set to true if this call needs to be privileged
9058 * Note: this function is always asynchronous.
9060 static int nfs41_free_stateid(struct nfs_server
*server
,
9061 const nfs4_stateid
*stateid
,
9062 struct rpc_cred
*cred
,
9065 struct rpc_task
*task
;
9067 task
= _nfs41_free_stateid(server
, stateid
, cred
, is_recovery
);
9069 return PTR_ERR(task
);
9075 nfs41_free_lock_state(struct nfs_server
*server
, struct nfs4_lock_state
*lsp
)
9077 struct rpc_cred
*cred
= lsp
->ls_state
->owner
->so_cred
;
9079 nfs41_free_stateid(server
, &lsp
->ls_stateid
, cred
, false);
9080 nfs4_free_lock_state(server
, lsp
);
9083 static bool nfs41_match_stateid(const nfs4_stateid
*s1
,
9084 const nfs4_stateid
*s2
)
9086 if (s1
->type
!= s2
->type
)
9089 if (memcmp(s1
->other
, s2
->other
, sizeof(s1
->other
)) != 0)
9092 if (s1
->seqid
== s2
->seqid
)
9095 return s1
->seqid
== 0 || s2
->seqid
== 0;
9098 #endif /* CONFIG_NFS_V4_1 */
9100 static bool nfs4_match_stateid(const nfs4_stateid
*s1
,
9101 const nfs4_stateid
*s2
)
9103 return nfs4_stateid_match(s1
, s2
);
9107 static const struct nfs4_state_recovery_ops nfs40_reboot_recovery_ops
= {
9108 .owner_flag_bit
= NFS_OWNER_RECLAIM_REBOOT
,
9109 .state_flag_bit
= NFS_STATE_RECLAIM_REBOOT
,
9110 .recover_open
= nfs4_open_reclaim
,
9111 .recover_lock
= nfs4_lock_reclaim
,
9112 .establish_clid
= nfs4_init_clientid
,
9113 .detect_trunking
= nfs40_discover_server_trunking
,
9116 #if defined(CONFIG_NFS_V4_1)
9117 static const struct nfs4_state_recovery_ops nfs41_reboot_recovery_ops
= {
9118 .owner_flag_bit
= NFS_OWNER_RECLAIM_REBOOT
,
9119 .state_flag_bit
= NFS_STATE_RECLAIM_REBOOT
,
9120 .recover_open
= nfs4_open_reclaim
,
9121 .recover_lock
= nfs4_lock_reclaim
,
9122 .establish_clid
= nfs41_init_clientid
,
9123 .reclaim_complete
= nfs41_proc_reclaim_complete
,
9124 .detect_trunking
= nfs41_discover_server_trunking
,
9126 #endif /* CONFIG_NFS_V4_1 */
9128 static const struct nfs4_state_recovery_ops nfs40_nograce_recovery_ops
= {
9129 .owner_flag_bit
= NFS_OWNER_RECLAIM_NOGRACE
,
9130 .state_flag_bit
= NFS_STATE_RECLAIM_NOGRACE
,
9131 .recover_open
= nfs40_open_expired
,
9132 .recover_lock
= nfs4_lock_expired
,
9133 .establish_clid
= nfs4_init_clientid
,
9136 #if defined(CONFIG_NFS_V4_1)
9137 static const struct nfs4_state_recovery_ops nfs41_nograce_recovery_ops
= {
9138 .owner_flag_bit
= NFS_OWNER_RECLAIM_NOGRACE
,
9139 .state_flag_bit
= NFS_STATE_RECLAIM_NOGRACE
,
9140 .recover_open
= nfs41_open_expired
,
9141 .recover_lock
= nfs41_lock_expired
,
9142 .establish_clid
= nfs41_init_clientid
,
9144 #endif /* CONFIG_NFS_V4_1 */
9146 static const struct nfs4_state_maintenance_ops nfs40_state_renewal_ops
= {
9147 .sched_state_renewal
= nfs4_proc_async_renew
,
9148 .get_state_renewal_cred_locked
= nfs4_get_renew_cred_locked
,
9149 .renew_lease
= nfs4_proc_renew
,
9152 #if defined(CONFIG_NFS_V4_1)
9153 static const struct nfs4_state_maintenance_ops nfs41_state_renewal_ops
= {
9154 .sched_state_renewal
= nfs41_proc_async_sequence
,
9155 .get_state_renewal_cred_locked
= nfs4_get_machine_cred_locked
,
9156 .renew_lease
= nfs4_proc_sequence
,
9160 static const struct nfs4_mig_recovery_ops nfs40_mig_recovery_ops
= {
9161 .get_locations
= _nfs40_proc_get_locations
,
9162 .fsid_present
= _nfs40_proc_fsid_present
,
9165 #if defined(CONFIG_NFS_V4_1)
9166 static const struct nfs4_mig_recovery_ops nfs41_mig_recovery_ops
= {
9167 .get_locations
= _nfs41_proc_get_locations
,
9168 .fsid_present
= _nfs41_proc_fsid_present
,
9170 #endif /* CONFIG_NFS_V4_1 */
9172 static const struct nfs4_minor_version_ops nfs_v4_0_minor_ops
= {
9174 .init_caps
= NFS_CAP_READDIRPLUS
9175 | NFS_CAP_ATOMIC_OPEN
9176 | NFS_CAP_POSIX_LOCK
,
9177 .init_client
= nfs40_init_client
,
9178 .shutdown_client
= nfs40_shutdown_client
,
9179 .match_stateid
= nfs4_match_stateid
,
9180 .find_root_sec
= nfs4_find_root_sec
,
9181 .free_lock_state
= nfs4_release_lockowner
,
9182 .test_and_free_expired
= nfs40_test_and_free_expired_stateid
,
9183 .alloc_seqid
= nfs_alloc_seqid
,
9184 .call_sync_ops
= &nfs40_call_sync_ops
,
9185 .reboot_recovery_ops
= &nfs40_reboot_recovery_ops
,
9186 .nograce_recovery_ops
= &nfs40_nograce_recovery_ops
,
9187 .state_renewal_ops
= &nfs40_state_renewal_ops
,
9188 .mig_recovery_ops
= &nfs40_mig_recovery_ops
,
9191 #if defined(CONFIG_NFS_V4_1)
9192 static struct nfs_seqid
*
9193 nfs_alloc_no_seqid(struct nfs_seqid_counter
*arg1
, gfp_t arg2
)
9198 static const struct nfs4_minor_version_ops nfs_v4_1_minor_ops
= {
9200 .init_caps
= NFS_CAP_READDIRPLUS
9201 | NFS_CAP_ATOMIC_OPEN
9202 | NFS_CAP_POSIX_LOCK
9203 | NFS_CAP_STATEID_NFSV41
9204 | NFS_CAP_ATOMIC_OPEN_V1
,
9205 .init_client
= nfs41_init_client
,
9206 .shutdown_client
= nfs41_shutdown_client
,
9207 .match_stateid
= nfs41_match_stateid
,
9208 .find_root_sec
= nfs41_find_root_sec
,
9209 .free_lock_state
= nfs41_free_lock_state
,
9210 .test_and_free_expired
= nfs41_test_and_free_expired_stateid
,
9211 .alloc_seqid
= nfs_alloc_no_seqid
,
9212 .session_trunk
= nfs4_test_session_trunk
,
9213 .call_sync_ops
= &nfs41_call_sync_ops
,
9214 .reboot_recovery_ops
= &nfs41_reboot_recovery_ops
,
9215 .nograce_recovery_ops
= &nfs41_nograce_recovery_ops
,
9216 .state_renewal_ops
= &nfs41_state_renewal_ops
,
9217 .mig_recovery_ops
= &nfs41_mig_recovery_ops
,
9221 #if defined(CONFIG_NFS_V4_2)
9222 static const struct nfs4_minor_version_ops nfs_v4_2_minor_ops
= {
9224 .init_caps
= NFS_CAP_READDIRPLUS
9225 | NFS_CAP_ATOMIC_OPEN
9226 | NFS_CAP_POSIX_LOCK
9227 | NFS_CAP_STATEID_NFSV41
9228 | NFS_CAP_ATOMIC_OPEN_V1
9231 | NFS_CAP_DEALLOCATE
9233 | NFS_CAP_LAYOUTSTATS
9235 .init_client
= nfs41_init_client
,
9236 .shutdown_client
= nfs41_shutdown_client
,
9237 .match_stateid
= nfs41_match_stateid
,
9238 .find_root_sec
= nfs41_find_root_sec
,
9239 .free_lock_state
= nfs41_free_lock_state
,
9240 .call_sync_ops
= &nfs41_call_sync_ops
,
9241 .test_and_free_expired
= nfs41_test_and_free_expired_stateid
,
9242 .alloc_seqid
= nfs_alloc_no_seqid
,
9243 .session_trunk
= nfs4_test_session_trunk
,
9244 .reboot_recovery_ops
= &nfs41_reboot_recovery_ops
,
9245 .nograce_recovery_ops
= &nfs41_nograce_recovery_ops
,
9246 .state_renewal_ops
= &nfs41_state_renewal_ops
,
9247 .mig_recovery_ops
= &nfs41_mig_recovery_ops
,
9251 const struct nfs4_minor_version_ops
*nfs_v4_minor_ops
[] = {
9252 [0] = &nfs_v4_0_minor_ops
,
9253 #if defined(CONFIG_NFS_V4_1)
9254 [1] = &nfs_v4_1_minor_ops
,
9256 #if defined(CONFIG_NFS_V4_2)
9257 [2] = &nfs_v4_2_minor_ops
,
9261 static ssize_t
nfs4_listxattr(struct dentry
*dentry
, char *list
, size_t size
)
9263 ssize_t error
, error2
;
9265 error
= generic_listxattr(dentry
, list
, size
);
9273 error2
= nfs4_listxattr_nfs4_label(d_inode(dentry
), list
, size
);
9276 return error
+ error2
;
9279 static const struct inode_operations nfs4_dir_inode_operations
= {
9280 .create
= nfs_create
,
9281 .lookup
= nfs_lookup
,
9282 .atomic_open
= nfs_atomic_open
,
9284 .unlink
= nfs_unlink
,
9285 .symlink
= nfs_symlink
,
9289 .rename
= nfs_rename
,
9290 .permission
= nfs_permission
,
9291 .getattr
= nfs_getattr
,
9292 .setattr
= nfs_setattr
,
9293 .listxattr
= nfs4_listxattr
,
9296 static const struct inode_operations nfs4_file_inode_operations
= {
9297 .permission
= nfs_permission
,
9298 .getattr
= nfs_getattr
,
9299 .setattr
= nfs_setattr
,
9300 .listxattr
= nfs4_listxattr
,
9303 const struct nfs_rpc_ops nfs_v4_clientops
= {
9304 .version
= 4, /* protocol version */
9305 .dentry_ops
= &nfs4_dentry_operations
,
9306 .dir_inode_ops
= &nfs4_dir_inode_operations
,
9307 .file_inode_ops
= &nfs4_file_inode_operations
,
9308 .file_ops
= &nfs4_file_operations
,
9309 .getroot
= nfs4_proc_get_root
,
9310 .submount
= nfs4_submount
,
9311 .try_mount
= nfs4_try_mount
,
9312 .getattr
= nfs4_proc_getattr
,
9313 .setattr
= nfs4_proc_setattr
,
9314 .lookup
= nfs4_proc_lookup
,
9315 .access
= nfs4_proc_access
,
9316 .readlink
= nfs4_proc_readlink
,
9317 .create
= nfs4_proc_create
,
9318 .remove
= nfs4_proc_remove
,
9319 .unlink_setup
= nfs4_proc_unlink_setup
,
9320 .unlink_rpc_prepare
= nfs4_proc_unlink_rpc_prepare
,
9321 .unlink_done
= nfs4_proc_unlink_done
,
9322 .rename_setup
= nfs4_proc_rename_setup
,
9323 .rename_rpc_prepare
= nfs4_proc_rename_rpc_prepare
,
9324 .rename_done
= nfs4_proc_rename_done
,
9325 .link
= nfs4_proc_link
,
9326 .symlink
= nfs4_proc_symlink
,
9327 .mkdir
= nfs4_proc_mkdir
,
9328 .rmdir
= nfs4_proc_remove
,
9329 .readdir
= nfs4_proc_readdir
,
9330 .mknod
= nfs4_proc_mknod
,
9331 .statfs
= nfs4_proc_statfs
,
9332 .fsinfo
= nfs4_proc_fsinfo
,
9333 .pathconf
= nfs4_proc_pathconf
,
9334 .set_capabilities
= nfs4_server_capabilities
,
9335 .decode_dirent
= nfs4_decode_dirent
,
9336 .pgio_rpc_prepare
= nfs4_proc_pgio_rpc_prepare
,
9337 .read_setup
= nfs4_proc_read_setup
,
9338 .read_done
= nfs4_read_done
,
9339 .write_setup
= nfs4_proc_write_setup
,
9340 .write_done
= nfs4_write_done
,
9341 .commit_setup
= nfs4_proc_commit_setup
,
9342 .commit_rpc_prepare
= nfs4_proc_commit_rpc_prepare
,
9343 .commit_done
= nfs4_commit_done
,
9344 .lock
= nfs4_proc_lock
,
9345 .clear_acl_cache
= nfs4_zap_acl_attr
,
9346 .close_context
= nfs4_close_context
,
9347 .open_context
= nfs4_atomic_open
,
9348 .have_delegation
= nfs4_have_delegation
,
9349 .return_delegation
= nfs4_inode_return_delegation
,
9350 .alloc_client
= nfs4_alloc_client
,
9351 .init_client
= nfs4_init_client
,
9352 .free_client
= nfs4_free_client
,
9353 .create_server
= nfs4_create_server
,
9354 .clone_server
= nfs_clone_server
,
9357 static const struct xattr_handler nfs4_xattr_nfs4_acl_handler
= {
9358 .name
= XATTR_NAME_NFSV4_ACL
,
9359 .list
= nfs4_xattr_list_nfs4_acl
,
9360 .get
= nfs4_xattr_get_nfs4_acl
,
9361 .set
= nfs4_xattr_set_nfs4_acl
,
9364 const struct xattr_handler
*nfs4_xattr_handlers
[] = {
9365 &nfs4_xattr_nfs4_acl_handler
,
9366 #ifdef CONFIG_NFS_V4_SECURITY_LABEL
9367 &nfs4_xattr_nfs4_label_handler
,