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 slot
->interrupted
= 0;
705 trace_nfs4_sequence_done(session
, res
);
706 /* Check the SEQUENCE operation status */
707 switch (res
->sr_status
) {
709 /* If previous op on slot was interrupted and we reused
710 * the seq# and got a reply from the cache, then retry
712 if (task
->tk_status
== -EREMOTEIO
&& interrupted
) {
716 /* Update the slot's sequence and clientid lease timer */
719 do_renew_lease(clp
, res
->sr_timestamp
);
720 /* Check sequence flags */
721 nfs41_handle_sequence_flag_errors(clp
, res
->sr_status_flags
,
723 nfs41_update_target_slotid(slot
->table
, slot
, res
);
727 * sr_status remains 1 if an RPC level error occurred.
728 * The server may or may not have processed the sequence
730 * Mark the slot as having hosted an interrupted RPC call.
732 slot
->interrupted
= 1;
735 /* The server detected a resend of the RPC call and
736 * returned NFS4ERR_DELAY as per Section 2.10.6.2
739 dprintk("%s: slot=%u seq=%u: Operation in progress\n",
744 case -NFS4ERR_BADSLOT
:
746 * The slot id we used was probably retired. Try again
747 * using a different slot id.
750 case -NFS4ERR_SEQ_MISORDERED
:
752 * Was the last operation on this sequence interrupted?
753 * If so, retry after bumping the sequence number.
760 * Could this slot have been previously retired?
761 * If so, then the server may be expecting seq_nr = 1!
763 if (slot
->seq_nr
!= 1) {
768 case -NFS4ERR_SEQ_FALSE_RETRY
:
772 /* Just update the slot sequence no. */
776 /* The session may be reset by one of the error handlers. */
777 dprintk("%s: Error %d free the slot \n", __func__
, res
->sr_status
);
781 if (rpc_restart_call_prepare(task
)) {
782 nfs41_sequence_free_slot(res
);
788 if (!rpc_restart_call(task
))
790 rpc_delay(task
, NFS4_POLL_RETRY_MAX
);
794 int nfs41_sequence_done(struct rpc_task
*task
, struct nfs4_sequence_res
*res
)
796 if (!nfs41_sequence_process(task
, res
))
798 if (res
->sr_slot
!= NULL
)
799 nfs41_sequence_free_slot(res
);
803 EXPORT_SYMBOL_GPL(nfs41_sequence_done
);
805 static int nfs4_sequence_process(struct rpc_task
*task
, struct nfs4_sequence_res
*res
)
807 if (res
->sr_slot
== NULL
)
809 if (res
->sr_slot
->table
->session
!= NULL
)
810 return nfs41_sequence_process(task
, res
);
811 return nfs40_sequence_done(task
, res
);
814 static void nfs4_sequence_free_slot(struct nfs4_sequence_res
*res
)
816 if (res
->sr_slot
!= NULL
) {
817 if (res
->sr_slot
->table
->session
!= NULL
)
818 nfs41_sequence_free_slot(res
);
820 nfs40_sequence_free_slot(res
);
824 int nfs4_sequence_done(struct rpc_task
*task
, struct nfs4_sequence_res
*res
)
826 if (res
->sr_slot
== NULL
)
828 if (!res
->sr_slot
->table
->session
)
829 return nfs40_sequence_done(task
, res
);
830 return nfs41_sequence_done(task
, res
);
832 EXPORT_SYMBOL_GPL(nfs4_sequence_done
);
834 static void nfs41_call_sync_prepare(struct rpc_task
*task
, void *calldata
)
836 struct nfs4_call_sync_data
*data
= calldata
;
838 dprintk("--> %s data->seq_server %p\n", __func__
, data
->seq_server
);
840 nfs4_setup_sequence(data
->seq_server
->nfs_client
,
841 data
->seq_args
, data
->seq_res
, task
);
844 static void nfs41_call_sync_done(struct rpc_task
*task
, void *calldata
)
846 struct nfs4_call_sync_data
*data
= calldata
;
848 nfs41_sequence_done(task
, data
->seq_res
);
851 static const struct rpc_call_ops nfs41_call_sync_ops
= {
852 .rpc_call_prepare
= nfs41_call_sync_prepare
,
853 .rpc_call_done
= nfs41_call_sync_done
,
856 #else /* !CONFIG_NFS_V4_1 */
858 static int nfs4_sequence_process(struct rpc_task
*task
, struct nfs4_sequence_res
*res
)
860 return nfs40_sequence_done(task
, res
);
863 static void nfs4_sequence_free_slot(struct nfs4_sequence_res
*res
)
865 if (res
->sr_slot
!= NULL
)
866 nfs40_sequence_free_slot(res
);
869 int nfs4_sequence_done(struct rpc_task
*task
,
870 struct nfs4_sequence_res
*res
)
872 return nfs40_sequence_done(task
, res
);
874 EXPORT_SYMBOL_GPL(nfs4_sequence_done
);
876 #endif /* !CONFIG_NFS_V4_1 */
878 int nfs4_setup_sequence(const struct nfs_client
*client
,
879 struct nfs4_sequence_args
*args
,
880 struct nfs4_sequence_res
*res
,
881 struct rpc_task
*task
)
883 struct nfs4_session
*session
= nfs4_get_session(client
);
884 struct nfs4_slot_table
*tbl
= client
->cl_slot_tbl
;
885 struct nfs4_slot
*slot
;
887 /* slot already allocated? */
888 if (res
->sr_slot
!= NULL
)
892 tbl
= &session
->fc_slot_table
;
893 task
->tk_timeout
= 0;
896 spin_lock(&tbl
->slot_tbl_lock
);
897 /* The state manager will wait until the slot table is empty */
898 if (nfs4_slot_tbl_draining(tbl
) && !args
->sa_privileged
)
901 slot
= nfs4_alloc_slot(tbl
);
903 /* Try again in 1/4 second */
904 if (slot
== ERR_PTR(-ENOMEM
))
905 task
->tk_timeout
= HZ
>> 2;
908 spin_unlock(&tbl
->slot_tbl_lock
);
910 slot
->privileged
= args
->sa_privileged
? 1 : 0;
911 args
->sa_slot
= slot
;
915 res
->sr_timestamp
= jiffies
;
916 res
->sr_status_flags
= 0;
920 trace_nfs4_setup_sequence(session
, args
);
922 rpc_call_start(task
);
926 if (args
->sa_privileged
)
927 rpc_sleep_on_priority(&tbl
->slot_tbl_waitq
, task
,
928 NULL
, RPC_PRIORITY_PRIVILEGED
);
930 rpc_sleep_on(&tbl
->slot_tbl_waitq
, task
, NULL
);
931 spin_unlock(&tbl
->slot_tbl_lock
);
934 EXPORT_SYMBOL_GPL(nfs4_setup_sequence
);
936 static void nfs40_call_sync_prepare(struct rpc_task
*task
, void *calldata
)
938 struct nfs4_call_sync_data
*data
= calldata
;
939 nfs4_setup_sequence(data
->seq_server
->nfs_client
,
940 data
->seq_args
, data
->seq_res
, task
);
943 static void nfs40_call_sync_done(struct rpc_task
*task
, void *calldata
)
945 struct nfs4_call_sync_data
*data
= calldata
;
946 nfs4_sequence_done(task
, data
->seq_res
);
949 static const struct rpc_call_ops nfs40_call_sync_ops
= {
950 .rpc_call_prepare
= nfs40_call_sync_prepare
,
951 .rpc_call_done
= nfs40_call_sync_done
,
954 static int nfs4_call_sync_sequence(struct rpc_clnt
*clnt
,
955 struct nfs_server
*server
,
956 struct rpc_message
*msg
,
957 struct nfs4_sequence_args
*args
,
958 struct nfs4_sequence_res
*res
)
961 struct rpc_task
*task
;
962 struct nfs_client
*clp
= server
->nfs_client
;
963 struct nfs4_call_sync_data data
= {
964 .seq_server
= server
,
968 struct rpc_task_setup task_setup
= {
971 .callback_ops
= clp
->cl_mvops
->call_sync_ops
,
972 .callback_data
= &data
975 task
= rpc_run_task(&task_setup
);
979 ret
= task
->tk_status
;
985 int nfs4_call_sync(struct rpc_clnt
*clnt
,
986 struct nfs_server
*server
,
987 struct rpc_message
*msg
,
988 struct nfs4_sequence_args
*args
,
989 struct nfs4_sequence_res
*res
,
992 nfs4_init_sequence(args
, res
, cache_reply
);
993 return nfs4_call_sync_sequence(clnt
, server
, msg
, args
, res
);
996 static void update_changeattr(struct inode
*dir
, struct nfs4_change_info
*cinfo
,
997 unsigned long timestamp
)
999 struct nfs_inode
*nfsi
= NFS_I(dir
);
1001 spin_lock(&dir
->i_lock
);
1002 nfsi
->cache_validity
|= NFS_INO_INVALID_ATTR
|NFS_INO_INVALID_DATA
;
1003 if (cinfo
->atomic
&& cinfo
->before
== dir
->i_version
) {
1004 nfsi
->cache_validity
&= ~NFS_INO_REVAL_PAGECACHE
;
1005 nfsi
->attrtimeo_timestamp
= jiffies
;
1007 nfs_force_lookup_revalidate(dir
);
1008 if (cinfo
->before
!= dir
->i_version
)
1009 nfsi
->cache_validity
|= NFS_INO_INVALID_ACCESS
|
1010 NFS_INO_INVALID_ACL
;
1012 dir
->i_version
= cinfo
->after
;
1013 nfsi
->read_cache_jiffies
= timestamp
;
1014 nfsi
->attr_gencount
= nfs_inc_attr_generation_counter();
1015 nfs_fscache_invalidate(dir
);
1016 spin_unlock(&dir
->i_lock
);
1019 struct nfs4_opendata
{
1021 struct nfs_openargs o_arg
;
1022 struct nfs_openres o_res
;
1023 struct nfs_open_confirmargs c_arg
;
1024 struct nfs_open_confirmres c_res
;
1025 struct nfs4_string owner_name
;
1026 struct nfs4_string group_name
;
1027 struct nfs4_label
*a_label
;
1028 struct nfs_fattr f_attr
;
1029 struct nfs4_label
*f_label
;
1031 struct dentry
*dentry
;
1032 struct nfs4_state_owner
*owner
;
1033 struct nfs4_state
*state
;
1035 unsigned long timestamp
;
1036 unsigned int rpc_done
: 1;
1037 unsigned int file_created
: 1;
1038 unsigned int is_recover
: 1;
1043 static bool nfs4_clear_cap_atomic_open_v1(struct nfs_server
*server
,
1044 int err
, struct nfs4_exception
*exception
)
1048 if (!(server
->caps
& NFS_CAP_ATOMIC_OPEN_V1
))
1050 server
->caps
&= ~NFS_CAP_ATOMIC_OPEN_V1
;
1051 exception
->retry
= 1;
1056 nfs4_map_atomic_open_share(struct nfs_server
*server
,
1057 fmode_t fmode
, int openflags
)
1061 switch (fmode
& (FMODE_READ
| FMODE_WRITE
)) {
1063 res
= NFS4_SHARE_ACCESS_READ
;
1066 res
= NFS4_SHARE_ACCESS_WRITE
;
1068 case FMODE_READ
|FMODE_WRITE
:
1069 res
= NFS4_SHARE_ACCESS_BOTH
;
1071 if (!(server
->caps
& NFS_CAP_ATOMIC_OPEN_V1
))
1073 /* Want no delegation if we're using O_DIRECT */
1074 if (openflags
& O_DIRECT
)
1075 res
|= NFS4_SHARE_WANT_NO_DELEG
;
1080 static enum open_claim_type4
1081 nfs4_map_atomic_open_claim(struct nfs_server
*server
,
1082 enum open_claim_type4 claim
)
1084 if (server
->caps
& NFS_CAP_ATOMIC_OPEN_V1
)
1089 case NFS4_OPEN_CLAIM_FH
:
1090 return NFS4_OPEN_CLAIM_NULL
;
1091 case NFS4_OPEN_CLAIM_DELEG_CUR_FH
:
1092 return NFS4_OPEN_CLAIM_DELEGATE_CUR
;
1093 case NFS4_OPEN_CLAIM_DELEG_PREV_FH
:
1094 return NFS4_OPEN_CLAIM_DELEGATE_PREV
;
1098 static void nfs4_init_opendata_res(struct nfs4_opendata
*p
)
1100 p
->o_res
.f_attr
= &p
->f_attr
;
1101 p
->o_res
.f_label
= p
->f_label
;
1102 p
->o_res
.seqid
= p
->o_arg
.seqid
;
1103 p
->c_res
.seqid
= p
->c_arg
.seqid
;
1104 p
->o_res
.server
= p
->o_arg
.server
;
1105 p
->o_res
.access_request
= p
->o_arg
.access
;
1106 nfs_fattr_init(&p
->f_attr
);
1107 nfs_fattr_init_names(&p
->f_attr
, &p
->owner_name
, &p
->group_name
);
1110 static struct nfs4_opendata
*nfs4_opendata_alloc(struct dentry
*dentry
,
1111 struct nfs4_state_owner
*sp
, fmode_t fmode
, int flags
,
1112 const struct iattr
*attrs
,
1113 struct nfs4_label
*label
,
1114 enum open_claim_type4 claim
,
1117 struct dentry
*parent
= dget_parent(dentry
);
1118 struct inode
*dir
= d_inode(parent
);
1119 struct nfs_server
*server
= NFS_SERVER(dir
);
1120 struct nfs_seqid
*(*alloc_seqid
)(struct nfs_seqid_counter
*, gfp_t
);
1121 struct nfs4_opendata
*p
;
1123 p
= kzalloc(sizeof(*p
), gfp_mask
);
1127 p
->f_label
= nfs4_label_alloc(server
, gfp_mask
);
1128 if (IS_ERR(p
->f_label
))
1131 p
->a_label
= nfs4_label_alloc(server
, gfp_mask
);
1132 if (IS_ERR(p
->a_label
))
1135 alloc_seqid
= server
->nfs_client
->cl_mvops
->alloc_seqid
;
1136 p
->o_arg
.seqid
= alloc_seqid(&sp
->so_seqid
, gfp_mask
);
1137 if (IS_ERR(p
->o_arg
.seqid
))
1138 goto err_free_label
;
1139 nfs_sb_active(dentry
->d_sb
);
1140 p
->dentry
= dget(dentry
);
1143 atomic_inc(&sp
->so_count
);
1144 p
->o_arg
.open_flags
= flags
;
1145 p
->o_arg
.fmode
= fmode
& (FMODE_READ
|FMODE_WRITE
);
1146 p
->o_arg
.umask
= current_umask();
1147 p
->o_arg
.claim
= nfs4_map_atomic_open_claim(server
, claim
);
1148 p
->o_arg
.share_access
= nfs4_map_atomic_open_share(server
,
1150 /* don't put an ACCESS op in OPEN compound if O_EXCL, because ACCESS
1151 * will return permission denied for all bits until close */
1152 if (!(flags
& O_EXCL
)) {
1153 /* ask server to check for all possible rights as results
1155 switch (p
->o_arg
.claim
) {
1158 case NFS4_OPEN_CLAIM_NULL
:
1159 case NFS4_OPEN_CLAIM_FH
:
1160 p
->o_arg
.access
= NFS4_ACCESS_READ
|
1161 NFS4_ACCESS_MODIFY
|
1162 NFS4_ACCESS_EXTEND
|
1163 NFS4_ACCESS_EXECUTE
;
1166 p
->o_arg
.clientid
= server
->nfs_client
->cl_clientid
;
1167 p
->o_arg
.id
.create_time
= ktime_to_ns(sp
->so_seqid
.create_time
);
1168 p
->o_arg
.id
.uniquifier
= sp
->so_seqid
.owner_id
;
1169 p
->o_arg
.name
= &dentry
->d_name
;
1170 p
->o_arg
.server
= server
;
1171 p
->o_arg
.bitmask
= nfs4_bitmask(server
, label
);
1172 p
->o_arg
.open_bitmap
= &nfs4_fattr_bitmap
[0];
1173 p
->o_arg
.label
= nfs4_label_copy(p
->a_label
, label
);
1174 switch (p
->o_arg
.claim
) {
1175 case NFS4_OPEN_CLAIM_NULL
:
1176 case NFS4_OPEN_CLAIM_DELEGATE_CUR
:
1177 case NFS4_OPEN_CLAIM_DELEGATE_PREV
:
1178 p
->o_arg
.fh
= NFS_FH(dir
);
1180 case NFS4_OPEN_CLAIM_PREVIOUS
:
1181 case NFS4_OPEN_CLAIM_FH
:
1182 case NFS4_OPEN_CLAIM_DELEG_CUR_FH
:
1183 case NFS4_OPEN_CLAIM_DELEG_PREV_FH
:
1184 p
->o_arg
.fh
= NFS_FH(d_inode(dentry
));
1186 if (attrs
!= NULL
&& attrs
->ia_valid
!= 0) {
1189 p
->o_arg
.u
.attrs
= &p
->attrs
;
1190 memcpy(&p
->attrs
, attrs
, sizeof(p
->attrs
));
1193 verf
[1] = current
->pid
;
1194 memcpy(p
->o_arg
.u
.verifier
.data
, verf
,
1195 sizeof(p
->o_arg
.u
.verifier
.data
));
1197 p
->c_arg
.fh
= &p
->o_res
.fh
;
1198 p
->c_arg
.stateid
= &p
->o_res
.stateid
;
1199 p
->c_arg
.seqid
= p
->o_arg
.seqid
;
1200 nfs4_init_opendata_res(p
);
1201 kref_init(&p
->kref
);
1205 nfs4_label_free(p
->a_label
);
1207 nfs4_label_free(p
->f_label
);
1215 static void nfs4_opendata_free(struct kref
*kref
)
1217 struct nfs4_opendata
*p
= container_of(kref
,
1218 struct nfs4_opendata
, kref
);
1219 struct super_block
*sb
= p
->dentry
->d_sb
;
1221 nfs_free_seqid(p
->o_arg
.seqid
);
1222 nfs4_sequence_free_slot(&p
->o_res
.seq_res
);
1223 if (p
->state
!= NULL
)
1224 nfs4_put_open_state(p
->state
);
1225 nfs4_put_state_owner(p
->owner
);
1227 nfs4_label_free(p
->a_label
);
1228 nfs4_label_free(p
->f_label
);
1232 nfs_sb_deactive(sb
);
1233 nfs_fattr_free_names(&p
->f_attr
);
1234 kfree(p
->f_attr
.mdsthreshold
);
1238 static void nfs4_opendata_put(struct nfs4_opendata
*p
)
1241 kref_put(&p
->kref
, nfs4_opendata_free
);
1244 static bool nfs4_mode_match_open_stateid(struct nfs4_state
*state
,
1247 switch(fmode
& (FMODE_READ
|FMODE_WRITE
)) {
1248 case FMODE_READ
|FMODE_WRITE
:
1249 return state
->n_rdwr
!= 0;
1251 return state
->n_wronly
!= 0;
1253 return state
->n_rdonly
!= 0;
1259 static int can_open_cached(struct nfs4_state
*state
, fmode_t mode
, int open_mode
)
1263 if (open_mode
& (O_EXCL
|O_TRUNC
))
1265 switch (mode
& (FMODE_READ
|FMODE_WRITE
)) {
1267 ret
|= test_bit(NFS_O_RDONLY_STATE
, &state
->flags
) != 0
1268 && state
->n_rdonly
!= 0;
1271 ret
|= test_bit(NFS_O_WRONLY_STATE
, &state
->flags
) != 0
1272 && state
->n_wronly
!= 0;
1274 case FMODE_READ
|FMODE_WRITE
:
1275 ret
|= test_bit(NFS_O_RDWR_STATE
, &state
->flags
) != 0
1276 && state
->n_rdwr
!= 0;
1282 static int can_open_delegated(struct nfs_delegation
*delegation
, fmode_t fmode
,
1283 enum open_claim_type4 claim
)
1285 if (delegation
== NULL
)
1287 if ((delegation
->type
& fmode
) != fmode
)
1289 if (test_bit(NFS_DELEGATION_RETURNING
, &delegation
->flags
))
1292 case NFS4_OPEN_CLAIM_NULL
:
1293 case NFS4_OPEN_CLAIM_FH
:
1295 case NFS4_OPEN_CLAIM_PREVIOUS
:
1296 if (!test_bit(NFS_DELEGATION_NEED_RECLAIM
, &delegation
->flags
))
1301 nfs_mark_delegation_referenced(delegation
);
1305 static void update_open_stateflags(struct nfs4_state
*state
, fmode_t fmode
)
1314 case FMODE_READ
|FMODE_WRITE
:
1317 nfs4_state_set_mode_locked(state
, state
->state
| fmode
);
1320 #ifdef CONFIG_NFS_V4_1
1321 static bool nfs_open_stateid_recover_openmode(struct nfs4_state
*state
)
1323 if (state
->n_rdonly
&& !test_bit(NFS_O_RDONLY_STATE
, &state
->flags
))
1325 if (state
->n_wronly
&& !test_bit(NFS_O_WRONLY_STATE
, &state
->flags
))
1327 if (state
->n_rdwr
&& !test_bit(NFS_O_RDWR_STATE
, &state
->flags
))
1331 #endif /* CONFIG_NFS_V4_1 */
1333 static void nfs_test_and_clear_all_open_stateid(struct nfs4_state
*state
)
1335 struct nfs_client
*clp
= state
->owner
->so_server
->nfs_client
;
1336 bool need_recover
= false;
1338 if (test_and_clear_bit(NFS_O_RDONLY_STATE
, &state
->flags
) && state
->n_rdonly
)
1339 need_recover
= true;
1340 if (test_and_clear_bit(NFS_O_WRONLY_STATE
, &state
->flags
) && state
->n_wronly
)
1341 need_recover
= true;
1342 if (test_and_clear_bit(NFS_O_RDWR_STATE
, &state
->flags
) && state
->n_rdwr
)
1343 need_recover
= true;
1345 nfs4_state_mark_reclaim_nograce(clp
, state
);
1348 static bool nfs_need_update_open_stateid(struct nfs4_state
*state
,
1349 const nfs4_stateid
*stateid
, nfs4_stateid
*freeme
)
1351 if (test_and_set_bit(NFS_OPEN_STATE
, &state
->flags
) == 0)
1353 if (!nfs4_stateid_match_other(stateid
, &state
->open_stateid
)) {
1354 nfs4_stateid_copy(freeme
, &state
->open_stateid
);
1355 nfs_test_and_clear_all_open_stateid(state
);
1358 if (nfs4_stateid_is_newer(stateid
, &state
->open_stateid
))
1363 static void nfs_resync_open_stateid_locked(struct nfs4_state
*state
)
1365 if (!(state
->n_wronly
|| state
->n_rdonly
|| state
->n_rdwr
))
1367 if (state
->n_wronly
)
1368 set_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
1369 if (state
->n_rdonly
)
1370 set_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
1372 set_bit(NFS_O_RDWR_STATE
, &state
->flags
);
1373 set_bit(NFS_OPEN_STATE
, &state
->flags
);
1376 static void nfs_clear_open_stateid_locked(struct nfs4_state
*state
,
1377 nfs4_stateid
*stateid
, fmode_t fmode
)
1379 clear_bit(NFS_O_RDWR_STATE
, &state
->flags
);
1380 switch (fmode
& (FMODE_READ
|FMODE_WRITE
)) {
1382 clear_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
1385 clear_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
1388 clear_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
1389 clear_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
1390 clear_bit(NFS_OPEN_STATE
, &state
->flags
);
1392 if (stateid
== NULL
)
1394 /* Handle OPEN+OPEN_DOWNGRADE races */
1395 if (nfs4_stateid_match_other(stateid
, &state
->open_stateid
) &&
1396 !nfs4_stateid_is_newer(stateid
, &state
->open_stateid
)) {
1397 nfs_resync_open_stateid_locked(state
);
1400 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) == 0)
1401 nfs4_stateid_copy(&state
->stateid
, stateid
);
1402 nfs4_stateid_copy(&state
->open_stateid
, stateid
);
1405 static void nfs_clear_open_stateid(struct nfs4_state
*state
,
1406 nfs4_stateid
*arg_stateid
,
1407 nfs4_stateid
*stateid
, fmode_t fmode
)
1409 write_seqlock(&state
->seqlock
);
1410 /* Ignore, if the CLOSE argment doesn't match the current stateid */
1411 if (nfs4_state_match_open_stateid_other(state
, arg_stateid
))
1412 nfs_clear_open_stateid_locked(state
, stateid
, fmode
);
1413 write_sequnlock(&state
->seqlock
);
1414 if (test_bit(NFS_STATE_RECLAIM_NOGRACE
, &state
->flags
))
1415 nfs4_schedule_state_manager(state
->owner
->so_server
->nfs_client
);
1418 static void nfs_set_open_stateid_locked(struct nfs4_state
*state
,
1419 const nfs4_stateid
*stateid
, fmode_t fmode
,
1420 nfs4_stateid
*freeme
)
1424 set_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
1427 set_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
1429 case FMODE_READ
|FMODE_WRITE
:
1430 set_bit(NFS_O_RDWR_STATE
, &state
->flags
);
1432 if (!nfs_need_update_open_stateid(state
, stateid
, freeme
))
1434 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) == 0)
1435 nfs4_stateid_copy(&state
->stateid
, stateid
);
1436 nfs4_stateid_copy(&state
->open_stateid
, stateid
);
1439 static void __update_open_stateid(struct nfs4_state
*state
,
1440 const nfs4_stateid
*open_stateid
,
1441 const nfs4_stateid
*deleg_stateid
,
1443 nfs4_stateid
*freeme
)
1446 * Protect the call to nfs4_state_set_mode_locked and
1447 * serialise the stateid update
1449 spin_lock(&state
->owner
->so_lock
);
1450 write_seqlock(&state
->seqlock
);
1451 if (deleg_stateid
!= NULL
) {
1452 nfs4_stateid_copy(&state
->stateid
, deleg_stateid
);
1453 set_bit(NFS_DELEGATED_STATE
, &state
->flags
);
1455 if (open_stateid
!= NULL
)
1456 nfs_set_open_stateid_locked(state
, open_stateid
, fmode
, freeme
);
1457 write_sequnlock(&state
->seqlock
);
1458 update_open_stateflags(state
, fmode
);
1459 spin_unlock(&state
->owner
->so_lock
);
1462 static int update_open_stateid(struct nfs4_state
*state
,
1463 const nfs4_stateid
*open_stateid
,
1464 const nfs4_stateid
*delegation
,
1467 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
1468 struct nfs_client
*clp
= server
->nfs_client
;
1469 struct nfs_inode
*nfsi
= NFS_I(state
->inode
);
1470 struct nfs_delegation
*deleg_cur
;
1471 nfs4_stateid freeme
= { };
1474 fmode
&= (FMODE_READ
|FMODE_WRITE
);
1477 deleg_cur
= rcu_dereference(nfsi
->delegation
);
1478 if (deleg_cur
== NULL
)
1481 spin_lock(&deleg_cur
->lock
);
1482 if (rcu_dereference(nfsi
->delegation
) != deleg_cur
||
1483 test_bit(NFS_DELEGATION_RETURNING
, &deleg_cur
->flags
) ||
1484 (deleg_cur
->type
& fmode
) != fmode
)
1485 goto no_delegation_unlock
;
1487 if (delegation
== NULL
)
1488 delegation
= &deleg_cur
->stateid
;
1489 else if (!nfs4_stateid_match(&deleg_cur
->stateid
, delegation
))
1490 goto no_delegation_unlock
;
1492 nfs_mark_delegation_referenced(deleg_cur
);
1493 __update_open_stateid(state
, open_stateid
, &deleg_cur
->stateid
,
1496 no_delegation_unlock
:
1497 spin_unlock(&deleg_cur
->lock
);
1501 if (!ret
&& open_stateid
!= NULL
) {
1502 __update_open_stateid(state
, open_stateid
, NULL
, fmode
, &freeme
);
1505 if (test_bit(NFS_STATE_RECLAIM_NOGRACE
, &state
->flags
))
1506 nfs4_schedule_state_manager(clp
);
1507 if (freeme
.type
!= 0)
1508 nfs4_test_and_free_stateid(server
, &freeme
,
1509 state
->owner
->so_cred
);
1514 static bool nfs4_update_lock_stateid(struct nfs4_lock_state
*lsp
,
1515 const nfs4_stateid
*stateid
)
1517 struct nfs4_state
*state
= lsp
->ls_state
;
1520 spin_lock(&state
->state_lock
);
1521 if (!nfs4_stateid_match_other(stateid
, &lsp
->ls_stateid
))
1523 if (!nfs4_stateid_is_newer(stateid
, &lsp
->ls_stateid
))
1525 nfs4_stateid_copy(&lsp
->ls_stateid
, stateid
);
1528 spin_unlock(&state
->state_lock
);
1532 static void nfs4_return_incompatible_delegation(struct inode
*inode
, fmode_t fmode
)
1534 struct nfs_delegation
*delegation
;
1537 delegation
= rcu_dereference(NFS_I(inode
)->delegation
);
1538 if (delegation
== NULL
|| (delegation
->type
& fmode
) == fmode
) {
1543 nfs4_inode_return_delegation(inode
);
1546 static struct nfs4_state
*nfs4_try_open_cached(struct nfs4_opendata
*opendata
)
1548 struct nfs4_state
*state
= opendata
->state
;
1549 struct nfs_inode
*nfsi
= NFS_I(state
->inode
);
1550 struct nfs_delegation
*delegation
;
1551 int open_mode
= opendata
->o_arg
.open_flags
;
1552 fmode_t fmode
= opendata
->o_arg
.fmode
;
1553 enum open_claim_type4 claim
= opendata
->o_arg
.claim
;
1554 nfs4_stateid stateid
;
1558 spin_lock(&state
->owner
->so_lock
);
1559 if (can_open_cached(state
, fmode
, open_mode
)) {
1560 update_open_stateflags(state
, fmode
);
1561 spin_unlock(&state
->owner
->so_lock
);
1562 goto out_return_state
;
1564 spin_unlock(&state
->owner
->so_lock
);
1566 delegation
= rcu_dereference(nfsi
->delegation
);
1567 if (!can_open_delegated(delegation
, fmode
, claim
)) {
1571 /* Save the delegation */
1572 nfs4_stateid_copy(&stateid
, &delegation
->stateid
);
1574 nfs_release_seqid(opendata
->o_arg
.seqid
);
1575 if (!opendata
->is_recover
) {
1576 ret
= nfs_may_open(state
->inode
, state
->owner
->so_cred
, open_mode
);
1582 /* Try to update the stateid using the delegation */
1583 if (update_open_stateid(state
, NULL
, &stateid
, fmode
))
1584 goto out_return_state
;
1587 return ERR_PTR(ret
);
1589 atomic_inc(&state
->count
);
1594 nfs4_opendata_check_deleg(struct nfs4_opendata
*data
, struct nfs4_state
*state
)
1596 struct nfs_client
*clp
= NFS_SERVER(state
->inode
)->nfs_client
;
1597 struct nfs_delegation
*delegation
;
1598 int delegation_flags
= 0;
1601 delegation
= rcu_dereference(NFS_I(state
->inode
)->delegation
);
1603 delegation_flags
= delegation
->flags
;
1605 switch (data
->o_arg
.claim
) {
1608 case NFS4_OPEN_CLAIM_DELEGATE_CUR
:
1609 case NFS4_OPEN_CLAIM_DELEG_CUR_FH
:
1610 pr_err_ratelimited("NFS: Broken NFSv4 server %s is "
1611 "returning a delegation for "
1612 "OPEN(CLAIM_DELEGATE_CUR)\n",
1616 if ((delegation_flags
& 1UL<<NFS_DELEGATION_NEED_RECLAIM
) == 0)
1617 nfs_inode_set_delegation(state
->inode
,
1618 data
->owner
->so_cred
,
1621 nfs_inode_reclaim_delegation(state
->inode
,
1622 data
->owner
->so_cred
,
1627 * Check the inode attributes against the CLAIM_PREVIOUS returned attributes
1628 * and update the nfs4_state.
1630 static struct nfs4_state
*
1631 _nfs4_opendata_reclaim_to_nfs4_state(struct nfs4_opendata
*data
)
1633 struct inode
*inode
= data
->state
->inode
;
1634 struct nfs4_state
*state
= data
->state
;
1637 if (!data
->rpc_done
) {
1638 if (data
->rpc_status
)
1639 return ERR_PTR(data
->rpc_status
);
1640 /* cached opens have already been processed */
1644 ret
= nfs_refresh_inode(inode
, &data
->f_attr
);
1646 return ERR_PTR(ret
);
1648 if (data
->o_res
.delegation_type
!= 0)
1649 nfs4_opendata_check_deleg(data
, state
);
1651 update_open_stateid(state
, &data
->o_res
.stateid
, NULL
,
1653 atomic_inc(&state
->count
);
1658 static struct nfs4_state
*
1659 _nfs4_opendata_to_nfs4_state(struct nfs4_opendata
*data
)
1661 struct inode
*inode
;
1662 struct nfs4_state
*state
= NULL
;
1665 if (!data
->rpc_done
) {
1666 state
= nfs4_try_open_cached(data
);
1667 trace_nfs4_cached_open(data
->state
);
1672 if (!(data
->f_attr
.valid
& NFS_ATTR_FATTR
))
1674 inode
= nfs_fhget(data
->dir
->d_sb
, &data
->o_res
.fh
, &data
->f_attr
, data
->f_label
);
1675 ret
= PTR_ERR(inode
);
1679 state
= nfs4_get_open_state(inode
, data
->owner
);
1682 if (data
->o_res
.delegation_type
!= 0)
1683 nfs4_opendata_check_deleg(data
, state
);
1684 update_open_stateid(state
, &data
->o_res
.stateid
, NULL
,
1688 nfs_release_seqid(data
->o_arg
.seqid
);
1693 return ERR_PTR(ret
);
1696 static struct nfs4_state
*
1697 nfs4_opendata_to_nfs4_state(struct nfs4_opendata
*data
)
1699 struct nfs4_state
*ret
;
1701 if (data
->o_arg
.claim
== NFS4_OPEN_CLAIM_PREVIOUS
)
1702 ret
=_nfs4_opendata_reclaim_to_nfs4_state(data
);
1704 ret
= _nfs4_opendata_to_nfs4_state(data
);
1705 nfs4_sequence_free_slot(&data
->o_res
.seq_res
);
1709 static struct nfs_open_context
*nfs4_state_find_open_context(struct nfs4_state
*state
)
1711 struct nfs_inode
*nfsi
= NFS_I(state
->inode
);
1712 struct nfs_open_context
*ctx
;
1714 spin_lock(&state
->inode
->i_lock
);
1715 list_for_each_entry(ctx
, &nfsi
->open_files
, list
) {
1716 if (ctx
->state
!= state
)
1718 get_nfs_open_context(ctx
);
1719 spin_unlock(&state
->inode
->i_lock
);
1722 spin_unlock(&state
->inode
->i_lock
);
1723 return ERR_PTR(-ENOENT
);
1726 static struct nfs4_opendata
*nfs4_open_recoverdata_alloc(struct nfs_open_context
*ctx
,
1727 struct nfs4_state
*state
, enum open_claim_type4 claim
)
1729 struct nfs4_opendata
*opendata
;
1731 opendata
= nfs4_opendata_alloc(ctx
->dentry
, state
->owner
, 0, 0,
1732 NULL
, NULL
, claim
, GFP_NOFS
);
1733 if (opendata
== NULL
)
1734 return ERR_PTR(-ENOMEM
);
1735 opendata
->state
= state
;
1736 atomic_inc(&state
->count
);
1740 static int nfs4_open_recover_helper(struct nfs4_opendata
*opendata
,
1743 struct nfs4_state
*newstate
;
1746 if (!nfs4_mode_match_open_stateid(opendata
->state
, fmode
))
1748 opendata
->o_arg
.open_flags
= 0;
1749 opendata
->o_arg
.fmode
= fmode
;
1750 opendata
->o_arg
.share_access
= nfs4_map_atomic_open_share(
1751 NFS_SB(opendata
->dentry
->d_sb
),
1753 memset(&opendata
->o_res
, 0, sizeof(opendata
->o_res
));
1754 memset(&opendata
->c_res
, 0, sizeof(opendata
->c_res
));
1755 nfs4_init_opendata_res(opendata
);
1756 ret
= _nfs4_recover_proc_open(opendata
);
1759 newstate
= nfs4_opendata_to_nfs4_state(opendata
);
1760 if (IS_ERR(newstate
))
1761 return PTR_ERR(newstate
);
1762 if (newstate
!= opendata
->state
)
1764 nfs4_close_state(newstate
, fmode
);
1768 static int nfs4_open_recover(struct nfs4_opendata
*opendata
, struct nfs4_state
*state
)
1772 /* Don't trigger recovery in nfs_test_and_clear_all_open_stateid */
1773 clear_bit(NFS_O_RDWR_STATE
, &state
->flags
);
1774 clear_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
1775 clear_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
1776 /* memory barrier prior to reading state->n_* */
1777 clear_bit(NFS_DELEGATED_STATE
, &state
->flags
);
1778 clear_bit(NFS_OPEN_STATE
, &state
->flags
);
1780 ret
= nfs4_open_recover_helper(opendata
, FMODE_READ
|FMODE_WRITE
);
1783 ret
= nfs4_open_recover_helper(opendata
, FMODE_WRITE
);
1786 ret
= nfs4_open_recover_helper(opendata
, FMODE_READ
);
1790 * We may have performed cached opens for all three recoveries.
1791 * Check if we need to update the current stateid.
1793 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) == 0 &&
1794 !nfs4_stateid_match(&state
->stateid
, &state
->open_stateid
)) {
1795 write_seqlock(&state
->seqlock
);
1796 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) == 0)
1797 nfs4_stateid_copy(&state
->stateid
, &state
->open_stateid
);
1798 write_sequnlock(&state
->seqlock
);
1805 * reclaim state on the server after a reboot.
1807 static int _nfs4_do_open_reclaim(struct nfs_open_context
*ctx
, struct nfs4_state
*state
)
1809 struct nfs_delegation
*delegation
;
1810 struct nfs4_opendata
*opendata
;
1811 fmode_t delegation_type
= 0;
1814 opendata
= nfs4_open_recoverdata_alloc(ctx
, state
,
1815 NFS4_OPEN_CLAIM_PREVIOUS
);
1816 if (IS_ERR(opendata
))
1817 return PTR_ERR(opendata
);
1819 delegation
= rcu_dereference(NFS_I(state
->inode
)->delegation
);
1820 if (delegation
!= NULL
&& test_bit(NFS_DELEGATION_NEED_RECLAIM
, &delegation
->flags
) != 0)
1821 delegation_type
= delegation
->type
;
1823 opendata
->o_arg
.u
.delegation_type
= delegation_type
;
1824 status
= nfs4_open_recover(opendata
, state
);
1825 nfs4_opendata_put(opendata
);
1829 static int nfs4_do_open_reclaim(struct nfs_open_context
*ctx
, struct nfs4_state
*state
)
1831 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
1832 struct nfs4_exception exception
= { };
1835 err
= _nfs4_do_open_reclaim(ctx
, state
);
1836 trace_nfs4_open_reclaim(ctx
, 0, err
);
1837 if (nfs4_clear_cap_atomic_open_v1(server
, err
, &exception
))
1839 if (err
!= -NFS4ERR_DELAY
)
1841 nfs4_handle_exception(server
, err
, &exception
);
1842 } while (exception
.retry
);
1846 static int nfs4_open_reclaim(struct nfs4_state_owner
*sp
, struct nfs4_state
*state
)
1848 struct nfs_open_context
*ctx
;
1851 ctx
= nfs4_state_find_open_context(state
);
1854 ret
= nfs4_do_open_reclaim(ctx
, state
);
1855 put_nfs_open_context(ctx
);
1859 static int nfs4_handle_delegation_recall_error(struct nfs_server
*server
, struct nfs4_state
*state
, const nfs4_stateid
*stateid
, int err
)
1863 printk(KERN_ERR
"NFS: %s: unhandled error "
1864 "%d.\n", __func__
, err
);
1870 case -NFS4ERR_BADSESSION
:
1871 case -NFS4ERR_BADSLOT
:
1872 case -NFS4ERR_BAD_HIGH_SLOT
:
1873 case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION
:
1874 case -NFS4ERR_DEADSESSION
:
1875 set_bit(NFS_DELEGATED_STATE
, &state
->flags
);
1876 nfs4_schedule_session_recovery(server
->nfs_client
->cl_session
, err
);
1878 case -NFS4ERR_STALE_CLIENTID
:
1879 case -NFS4ERR_STALE_STATEID
:
1880 set_bit(NFS_DELEGATED_STATE
, &state
->flags
);
1881 /* Don't recall a delegation if it was lost */
1882 nfs4_schedule_lease_recovery(server
->nfs_client
);
1884 case -NFS4ERR_MOVED
:
1885 nfs4_schedule_migration_recovery(server
);
1887 case -NFS4ERR_LEASE_MOVED
:
1888 nfs4_schedule_lease_moved_recovery(server
->nfs_client
);
1890 case -NFS4ERR_DELEG_REVOKED
:
1891 case -NFS4ERR_ADMIN_REVOKED
:
1892 case -NFS4ERR_EXPIRED
:
1893 case -NFS4ERR_BAD_STATEID
:
1894 case -NFS4ERR_OPENMODE
:
1895 nfs_inode_find_state_and_recover(state
->inode
,
1897 nfs4_schedule_stateid_recovery(server
, state
);
1899 case -NFS4ERR_DELAY
:
1900 case -NFS4ERR_GRACE
:
1901 set_bit(NFS_DELEGATED_STATE
, &state
->flags
);
1905 case -NFS4ERR_DENIED
:
1906 /* kill_proc(fl->fl_pid, SIGLOST, 1); */
1912 int nfs4_open_delegation_recall(struct nfs_open_context
*ctx
,
1913 struct nfs4_state
*state
, const nfs4_stateid
*stateid
,
1916 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
1917 struct nfs4_opendata
*opendata
;
1920 opendata
= nfs4_open_recoverdata_alloc(ctx
, state
,
1921 NFS4_OPEN_CLAIM_DELEG_CUR_FH
);
1922 if (IS_ERR(opendata
))
1923 return PTR_ERR(opendata
);
1924 nfs4_stateid_copy(&opendata
->o_arg
.u
.delegation
, stateid
);
1925 write_seqlock(&state
->seqlock
);
1926 nfs4_stateid_copy(&state
->stateid
, &state
->open_stateid
);
1927 write_sequnlock(&state
->seqlock
);
1928 clear_bit(NFS_DELEGATED_STATE
, &state
->flags
);
1929 switch (type
& (FMODE_READ
|FMODE_WRITE
)) {
1930 case FMODE_READ
|FMODE_WRITE
:
1932 err
= nfs4_open_recover_helper(opendata
, FMODE_READ
|FMODE_WRITE
);
1935 err
= nfs4_open_recover_helper(opendata
, FMODE_WRITE
);
1939 err
= nfs4_open_recover_helper(opendata
, FMODE_READ
);
1941 nfs4_opendata_put(opendata
);
1942 return nfs4_handle_delegation_recall_error(server
, state
, stateid
, err
);
1945 static void nfs4_open_confirm_prepare(struct rpc_task
*task
, void *calldata
)
1947 struct nfs4_opendata
*data
= calldata
;
1949 nfs4_setup_sequence(data
->o_arg
.server
->nfs_client
,
1950 &data
->c_arg
.seq_args
, &data
->c_res
.seq_res
, task
);
1953 static void nfs4_open_confirm_done(struct rpc_task
*task
, void *calldata
)
1955 struct nfs4_opendata
*data
= calldata
;
1957 nfs40_sequence_done(task
, &data
->c_res
.seq_res
);
1959 data
->rpc_status
= task
->tk_status
;
1960 if (data
->rpc_status
== 0) {
1961 nfs4_stateid_copy(&data
->o_res
.stateid
, &data
->c_res
.stateid
);
1962 nfs_confirm_seqid(&data
->owner
->so_seqid
, 0);
1963 renew_lease(data
->o_res
.server
, data
->timestamp
);
1968 static void nfs4_open_confirm_release(void *calldata
)
1970 struct nfs4_opendata
*data
= calldata
;
1971 struct nfs4_state
*state
= NULL
;
1973 /* If this request hasn't been cancelled, do nothing */
1974 if (data
->cancelled
== 0)
1976 /* In case of error, no cleanup! */
1977 if (!data
->rpc_done
)
1979 state
= nfs4_opendata_to_nfs4_state(data
);
1981 nfs4_close_state(state
, data
->o_arg
.fmode
);
1983 nfs4_opendata_put(data
);
1986 static const struct rpc_call_ops nfs4_open_confirm_ops
= {
1987 .rpc_call_prepare
= nfs4_open_confirm_prepare
,
1988 .rpc_call_done
= nfs4_open_confirm_done
,
1989 .rpc_release
= nfs4_open_confirm_release
,
1993 * Note: On error, nfs4_proc_open_confirm will free the struct nfs4_opendata
1995 static int _nfs4_proc_open_confirm(struct nfs4_opendata
*data
)
1997 struct nfs_server
*server
= NFS_SERVER(d_inode(data
->dir
));
1998 struct rpc_task
*task
;
1999 struct rpc_message msg
= {
2000 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_OPEN_CONFIRM
],
2001 .rpc_argp
= &data
->c_arg
,
2002 .rpc_resp
= &data
->c_res
,
2003 .rpc_cred
= data
->owner
->so_cred
,
2005 struct rpc_task_setup task_setup_data
= {
2006 .rpc_client
= server
->client
,
2007 .rpc_message
= &msg
,
2008 .callback_ops
= &nfs4_open_confirm_ops
,
2009 .callback_data
= data
,
2010 .workqueue
= nfsiod_workqueue
,
2011 .flags
= RPC_TASK_ASYNC
,
2015 nfs4_init_sequence(&data
->c_arg
.seq_args
, &data
->c_res
.seq_res
, 1);
2016 kref_get(&data
->kref
);
2018 data
->rpc_status
= 0;
2019 data
->timestamp
= jiffies
;
2020 if (data
->is_recover
)
2021 nfs4_set_sequence_privileged(&data
->c_arg
.seq_args
);
2022 task
= rpc_run_task(&task_setup_data
);
2024 return PTR_ERR(task
);
2025 status
= rpc_wait_for_completion_task(task
);
2027 data
->cancelled
= 1;
2030 status
= data
->rpc_status
;
2035 static void nfs4_open_prepare(struct rpc_task
*task
, void *calldata
)
2037 struct nfs4_opendata
*data
= calldata
;
2038 struct nfs4_state_owner
*sp
= data
->owner
;
2039 struct nfs_client
*clp
= sp
->so_server
->nfs_client
;
2040 enum open_claim_type4 claim
= data
->o_arg
.claim
;
2042 if (nfs_wait_on_sequence(data
->o_arg
.seqid
, task
) != 0)
2045 * Check if we still need to send an OPEN call, or if we can use
2046 * a delegation instead.
2048 if (data
->state
!= NULL
) {
2049 struct nfs_delegation
*delegation
;
2051 if (can_open_cached(data
->state
, data
->o_arg
.fmode
, data
->o_arg
.open_flags
))
2054 delegation
= rcu_dereference(NFS_I(data
->state
->inode
)->delegation
);
2055 if (can_open_delegated(delegation
, data
->o_arg
.fmode
, claim
))
2056 goto unlock_no_action
;
2059 /* Update client id. */
2060 data
->o_arg
.clientid
= clp
->cl_clientid
;
2064 case NFS4_OPEN_CLAIM_PREVIOUS
:
2065 case NFS4_OPEN_CLAIM_DELEG_CUR_FH
:
2066 case NFS4_OPEN_CLAIM_DELEG_PREV_FH
:
2067 data
->o_arg
.open_bitmap
= &nfs4_open_noattr_bitmap
[0];
2068 case NFS4_OPEN_CLAIM_FH
:
2069 task
->tk_msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_OPEN_NOATTR
];
2070 nfs_copy_fh(&data
->o_res
.fh
, data
->o_arg
.fh
);
2072 data
->timestamp
= jiffies
;
2073 if (nfs4_setup_sequence(data
->o_arg
.server
->nfs_client
,
2074 &data
->o_arg
.seq_args
,
2075 &data
->o_res
.seq_res
,
2077 nfs_release_seqid(data
->o_arg
.seqid
);
2079 /* Set the create mode (note dependency on the session type) */
2080 data
->o_arg
.createmode
= NFS4_CREATE_UNCHECKED
;
2081 if (data
->o_arg
.open_flags
& O_EXCL
) {
2082 data
->o_arg
.createmode
= NFS4_CREATE_EXCLUSIVE
;
2083 if (nfs4_has_persistent_session(clp
))
2084 data
->o_arg
.createmode
= NFS4_CREATE_GUARDED
;
2085 else if (clp
->cl_mvops
->minor_version
> 0)
2086 data
->o_arg
.createmode
= NFS4_CREATE_EXCLUSIVE4_1
;
2090 trace_nfs4_cached_open(data
->state
);
2093 task
->tk_action
= NULL
;
2095 nfs4_sequence_done(task
, &data
->o_res
.seq_res
);
2098 static void nfs4_open_done(struct rpc_task
*task
, void *calldata
)
2100 struct nfs4_opendata
*data
= calldata
;
2102 data
->rpc_status
= task
->tk_status
;
2104 if (!nfs4_sequence_process(task
, &data
->o_res
.seq_res
))
2107 if (task
->tk_status
== 0) {
2108 if (data
->o_res
.f_attr
->valid
& NFS_ATTR_FATTR_TYPE
) {
2109 switch (data
->o_res
.f_attr
->mode
& S_IFMT
) {
2113 data
->rpc_status
= -ELOOP
;
2116 data
->rpc_status
= -EISDIR
;
2119 data
->rpc_status
= -ENOTDIR
;
2122 renew_lease(data
->o_res
.server
, data
->timestamp
);
2123 if (!(data
->o_res
.rflags
& NFS4_OPEN_RESULT_CONFIRM
))
2124 nfs_confirm_seqid(&data
->owner
->so_seqid
, 0);
2129 static void nfs4_open_release(void *calldata
)
2131 struct nfs4_opendata
*data
= calldata
;
2132 struct nfs4_state
*state
= NULL
;
2134 /* If this request hasn't been cancelled, do nothing */
2135 if (data
->cancelled
== 0)
2137 /* In case of error, no cleanup! */
2138 if (data
->rpc_status
!= 0 || !data
->rpc_done
)
2140 /* In case we need an open_confirm, no cleanup! */
2141 if (data
->o_res
.rflags
& NFS4_OPEN_RESULT_CONFIRM
)
2143 state
= nfs4_opendata_to_nfs4_state(data
);
2145 nfs4_close_state(state
, data
->o_arg
.fmode
);
2147 nfs4_opendata_put(data
);
2150 static const struct rpc_call_ops nfs4_open_ops
= {
2151 .rpc_call_prepare
= nfs4_open_prepare
,
2152 .rpc_call_done
= nfs4_open_done
,
2153 .rpc_release
= nfs4_open_release
,
2156 static int nfs4_run_open_task(struct nfs4_opendata
*data
, int isrecover
)
2158 struct inode
*dir
= d_inode(data
->dir
);
2159 struct nfs_server
*server
= NFS_SERVER(dir
);
2160 struct nfs_openargs
*o_arg
= &data
->o_arg
;
2161 struct nfs_openres
*o_res
= &data
->o_res
;
2162 struct rpc_task
*task
;
2163 struct rpc_message msg
= {
2164 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_OPEN
],
2167 .rpc_cred
= data
->owner
->so_cred
,
2169 struct rpc_task_setup task_setup_data
= {
2170 .rpc_client
= server
->client
,
2171 .rpc_message
= &msg
,
2172 .callback_ops
= &nfs4_open_ops
,
2173 .callback_data
= data
,
2174 .workqueue
= nfsiod_workqueue
,
2175 .flags
= RPC_TASK_ASYNC
,
2179 nfs4_init_sequence(&o_arg
->seq_args
, &o_res
->seq_res
, 1);
2180 kref_get(&data
->kref
);
2182 data
->rpc_status
= 0;
2183 data
->cancelled
= 0;
2184 data
->is_recover
= 0;
2186 nfs4_set_sequence_privileged(&o_arg
->seq_args
);
2187 data
->is_recover
= 1;
2189 task
= rpc_run_task(&task_setup_data
);
2191 return PTR_ERR(task
);
2192 status
= rpc_wait_for_completion_task(task
);
2194 data
->cancelled
= 1;
2197 status
= data
->rpc_status
;
2203 static int _nfs4_recover_proc_open(struct nfs4_opendata
*data
)
2205 struct inode
*dir
= d_inode(data
->dir
);
2206 struct nfs_openres
*o_res
= &data
->o_res
;
2209 status
= nfs4_run_open_task(data
, 1);
2210 if (status
!= 0 || !data
->rpc_done
)
2213 nfs_fattr_map_and_free_names(NFS_SERVER(dir
), &data
->f_attr
);
2215 if (o_res
->rflags
& NFS4_OPEN_RESULT_CONFIRM
)
2216 status
= _nfs4_proc_open_confirm(data
);
2222 * Additional permission checks in order to distinguish between an
2223 * open for read, and an open for execute. This works around the
2224 * fact that NFSv4 OPEN treats read and execute permissions as being
2226 * Note that in the non-execute case, we want to turn off permission
2227 * checking if we just created a new file (POSIX open() semantics).
2229 static int nfs4_opendata_access(struct rpc_cred
*cred
,
2230 struct nfs4_opendata
*opendata
,
2231 struct nfs4_state
*state
, fmode_t fmode
,
2234 struct nfs_access_entry cache
;
2237 /* access call failed or for some reason the server doesn't
2238 * support any access modes -- defer access call until later */
2239 if (opendata
->o_res
.access_supported
== 0)
2244 * Use openflags to check for exec, because fmode won't
2245 * always have FMODE_EXEC set when file open for exec.
2247 if (openflags
& __FMODE_EXEC
) {
2248 /* ONLY check for exec rights */
2250 } else if ((fmode
& FMODE_READ
) && !opendata
->file_created
)
2254 cache
.jiffies
= jiffies
;
2255 nfs_access_set_mask(&cache
, opendata
->o_res
.access_result
);
2256 nfs_access_add_cache(state
->inode
, &cache
);
2258 if ((mask
& ~cache
.mask
& (MAY_READ
| MAY_EXEC
)) == 0)
2265 * Note: On error, nfs4_proc_open will free the struct nfs4_opendata
2267 static int _nfs4_proc_open(struct nfs4_opendata
*data
)
2269 struct inode
*dir
= d_inode(data
->dir
);
2270 struct nfs_server
*server
= NFS_SERVER(dir
);
2271 struct nfs_openargs
*o_arg
= &data
->o_arg
;
2272 struct nfs_openres
*o_res
= &data
->o_res
;
2275 status
= nfs4_run_open_task(data
, 0);
2276 if (!data
->rpc_done
)
2279 if (status
== -NFS4ERR_BADNAME
&&
2280 !(o_arg
->open_flags
& O_CREAT
))
2285 nfs_fattr_map_and_free_names(server
, &data
->f_attr
);
2287 if (o_arg
->open_flags
& O_CREAT
) {
2288 if (o_arg
->open_flags
& O_EXCL
)
2289 data
->file_created
= 1;
2290 else if (o_res
->cinfo
.before
!= o_res
->cinfo
.after
)
2291 data
->file_created
= 1;
2292 if (data
->file_created
|| dir
->i_version
!= o_res
->cinfo
.after
)
2293 update_changeattr(dir
, &o_res
->cinfo
,
2294 o_res
->f_attr
->time_start
);
2296 if ((o_res
->rflags
& NFS4_OPEN_RESULT_LOCKTYPE_POSIX
) == 0)
2297 server
->caps
&= ~NFS_CAP_POSIX_LOCK
;
2298 if(o_res
->rflags
& NFS4_OPEN_RESULT_CONFIRM
) {
2299 status
= _nfs4_proc_open_confirm(data
);
2303 if (!(o_res
->f_attr
->valid
& NFS_ATTR_FATTR
))
2304 nfs4_proc_getattr(server
, &o_res
->fh
, o_res
->f_attr
, o_res
->f_label
);
2310 * reclaim state on the server after a network partition.
2311 * Assumes caller holds the appropriate lock
2313 static int _nfs4_open_expired(struct nfs_open_context
*ctx
, struct nfs4_state
*state
)
2315 struct nfs4_opendata
*opendata
;
2318 opendata
= nfs4_open_recoverdata_alloc(ctx
, state
,
2319 NFS4_OPEN_CLAIM_FH
);
2320 if (IS_ERR(opendata
))
2321 return PTR_ERR(opendata
);
2322 ret
= nfs4_open_recover(opendata
, state
);
2324 d_drop(ctx
->dentry
);
2325 nfs4_opendata_put(opendata
);
2329 static int nfs4_do_open_expired(struct nfs_open_context
*ctx
, struct nfs4_state
*state
)
2331 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
2332 struct nfs4_exception exception
= { };
2336 err
= _nfs4_open_expired(ctx
, state
);
2337 trace_nfs4_open_expired(ctx
, 0, err
);
2338 if (nfs4_clear_cap_atomic_open_v1(server
, err
, &exception
))
2343 case -NFS4ERR_GRACE
:
2344 case -NFS4ERR_DELAY
:
2345 nfs4_handle_exception(server
, err
, &exception
);
2348 } while (exception
.retry
);
2353 static int nfs4_open_expired(struct nfs4_state_owner
*sp
, struct nfs4_state
*state
)
2355 struct nfs_open_context
*ctx
;
2358 ctx
= nfs4_state_find_open_context(state
);
2361 ret
= nfs4_do_open_expired(ctx
, state
);
2362 put_nfs_open_context(ctx
);
2366 static void nfs_finish_clear_delegation_stateid(struct nfs4_state
*state
,
2367 const nfs4_stateid
*stateid
)
2369 nfs_remove_bad_delegation(state
->inode
, stateid
);
2370 write_seqlock(&state
->seqlock
);
2371 nfs4_stateid_copy(&state
->stateid
, &state
->open_stateid
);
2372 write_sequnlock(&state
->seqlock
);
2373 clear_bit(NFS_DELEGATED_STATE
, &state
->flags
);
2376 static void nfs40_clear_delegation_stateid(struct nfs4_state
*state
)
2378 if (rcu_access_pointer(NFS_I(state
->inode
)->delegation
) != NULL
)
2379 nfs_finish_clear_delegation_stateid(state
, NULL
);
2382 static int nfs40_open_expired(struct nfs4_state_owner
*sp
, struct nfs4_state
*state
)
2384 /* NFSv4.0 doesn't allow for delegation recovery on open expire */
2385 nfs40_clear_delegation_stateid(state
);
2386 return nfs4_open_expired(sp
, state
);
2389 static int nfs40_test_and_free_expired_stateid(struct nfs_server
*server
,
2390 nfs4_stateid
*stateid
,
2391 struct rpc_cred
*cred
)
2393 return -NFS4ERR_BAD_STATEID
;
2396 #if defined(CONFIG_NFS_V4_1)
2397 static int nfs41_test_and_free_expired_stateid(struct nfs_server
*server
,
2398 nfs4_stateid
*stateid
,
2399 struct rpc_cred
*cred
)
2403 switch (stateid
->type
) {
2406 case NFS4_INVALID_STATEID_TYPE
:
2407 case NFS4_SPECIAL_STATEID_TYPE
:
2408 return -NFS4ERR_BAD_STATEID
;
2409 case NFS4_REVOKED_STATEID_TYPE
:
2413 status
= nfs41_test_stateid(server
, stateid
, cred
);
2415 case -NFS4ERR_EXPIRED
:
2416 case -NFS4ERR_ADMIN_REVOKED
:
2417 case -NFS4ERR_DELEG_REVOKED
:
2423 /* Ack the revoked state to the server */
2424 nfs41_free_stateid(server
, stateid
, cred
, true);
2425 return -NFS4ERR_EXPIRED
;
2428 static void nfs41_check_delegation_stateid(struct nfs4_state
*state
)
2430 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
2431 nfs4_stateid stateid
;
2432 struct nfs_delegation
*delegation
;
2433 struct rpc_cred
*cred
;
2436 /* Get the delegation credential for use by test/free_stateid */
2438 delegation
= rcu_dereference(NFS_I(state
->inode
)->delegation
);
2439 if (delegation
== NULL
) {
2444 nfs4_stateid_copy(&stateid
, &delegation
->stateid
);
2445 if (test_bit(NFS_DELEGATION_REVOKED
, &delegation
->flags
) ||
2446 !test_and_clear_bit(NFS_DELEGATION_TEST_EXPIRED
,
2447 &delegation
->flags
)) {
2449 nfs_finish_clear_delegation_stateid(state
, &stateid
);
2453 cred
= get_rpccred(delegation
->cred
);
2455 status
= nfs41_test_and_free_expired_stateid(server
, &stateid
, cred
);
2456 trace_nfs4_test_delegation_stateid(state
, NULL
, status
);
2457 if (status
== -NFS4ERR_EXPIRED
|| status
== -NFS4ERR_BAD_STATEID
)
2458 nfs_finish_clear_delegation_stateid(state
, &stateid
);
2464 * nfs41_check_expired_locks - possibly free a lock stateid
2466 * @state: NFSv4 state for an inode
2468 * Returns NFS_OK if recovery for this stateid is now finished.
2469 * Otherwise a negative NFS4ERR value is returned.
2471 static int nfs41_check_expired_locks(struct nfs4_state
*state
)
2473 int status
, ret
= NFS_OK
;
2474 struct nfs4_lock_state
*lsp
, *prev
= NULL
;
2475 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
2477 if (!test_bit(LK_STATE_IN_USE
, &state
->flags
))
2480 spin_lock(&state
->state_lock
);
2481 list_for_each_entry(lsp
, &state
->lock_states
, ls_locks
) {
2482 if (test_bit(NFS_LOCK_INITIALIZED
, &lsp
->ls_flags
)) {
2483 struct rpc_cred
*cred
= lsp
->ls_state
->owner
->so_cred
;
2485 atomic_inc(&lsp
->ls_count
);
2486 spin_unlock(&state
->state_lock
);
2488 nfs4_put_lock_state(prev
);
2491 status
= nfs41_test_and_free_expired_stateid(server
,
2494 trace_nfs4_test_lock_stateid(state
, lsp
, status
);
2495 if (status
== -NFS4ERR_EXPIRED
||
2496 status
== -NFS4ERR_BAD_STATEID
) {
2497 clear_bit(NFS_LOCK_INITIALIZED
, &lsp
->ls_flags
);
2498 lsp
->ls_stateid
.type
= NFS4_INVALID_STATEID_TYPE
;
2499 if (!recover_lost_locks
)
2500 set_bit(NFS_LOCK_LOST
, &lsp
->ls_flags
);
2501 } else if (status
!= NFS_OK
) {
2503 nfs4_put_lock_state(prev
);
2506 spin_lock(&state
->state_lock
);
2509 spin_unlock(&state
->state_lock
);
2510 nfs4_put_lock_state(prev
);
2516 * nfs41_check_open_stateid - possibly free an open stateid
2518 * @state: NFSv4 state for an inode
2520 * Returns NFS_OK if recovery for this stateid is now finished.
2521 * Otherwise a negative NFS4ERR value is returned.
2523 static int nfs41_check_open_stateid(struct nfs4_state
*state
)
2525 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
2526 nfs4_stateid
*stateid
= &state
->open_stateid
;
2527 struct rpc_cred
*cred
= state
->owner
->so_cred
;
2530 if (test_bit(NFS_OPEN_STATE
, &state
->flags
) == 0) {
2531 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) == 0) {
2532 if (nfs4_have_delegation(state
->inode
, state
->state
))
2534 return -NFS4ERR_OPENMODE
;
2536 return -NFS4ERR_BAD_STATEID
;
2538 status
= nfs41_test_and_free_expired_stateid(server
, stateid
, cred
);
2539 trace_nfs4_test_open_stateid(state
, NULL
, status
);
2540 if (status
== -NFS4ERR_EXPIRED
|| status
== -NFS4ERR_BAD_STATEID
) {
2541 clear_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
2542 clear_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
2543 clear_bit(NFS_O_RDWR_STATE
, &state
->flags
);
2544 clear_bit(NFS_OPEN_STATE
, &state
->flags
);
2545 stateid
->type
= NFS4_INVALID_STATEID_TYPE
;
2547 if (status
!= NFS_OK
)
2549 if (nfs_open_stateid_recover_openmode(state
))
2550 return -NFS4ERR_OPENMODE
;
2554 static int nfs41_open_expired(struct nfs4_state_owner
*sp
, struct nfs4_state
*state
)
2558 nfs41_check_delegation_stateid(state
);
2559 status
= nfs41_check_expired_locks(state
);
2560 if (status
!= NFS_OK
)
2562 status
= nfs41_check_open_stateid(state
);
2563 if (status
!= NFS_OK
)
2564 status
= nfs4_open_expired(sp
, state
);
2570 * on an EXCLUSIVE create, the server should send back a bitmask with FATTR4-*
2571 * fields corresponding to attributes that were used to store the verifier.
2572 * Make sure we clobber those fields in the later setattr call
2574 static inline void nfs4_exclusive_attrset(struct nfs4_opendata
*opendata
,
2575 struct iattr
*sattr
, struct nfs4_label
**label
)
2577 const u32
*attrset
= opendata
->o_res
.attrset
;
2579 if ((attrset
[1] & FATTR4_WORD1_TIME_ACCESS
) &&
2580 !(sattr
->ia_valid
& ATTR_ATIME_SET
))
2581 sattr
->ia_valid
|= ATTR_ATIME
;
2583 if ((attrset
[1] & FATTR4_WORD1_TIME_MODIFY
) &&
2584 !(sattr
->ia_valid
& ATTR_MTIME_SET
))
2585 sattr
->ia_valid
|= ATTR_MTIME
;
2587 /* Except MODE, it seems harmless of setting twice. */
2588 if (opendata
->o_arg
.createmode
!= NFS4_CREATE_EXCLUSIVE
&&
2589 attrset
[1] & FATTR4_WORD1_MODE
)
2590 sattr
->ia_valid
&= ~ATTR_MODE
;
2592 if (attrset
[2] & FATTR4_WORD2_SECURITY_LABEL
)
2596 static int _nfs4_open_and_get_state(struct nfs4_opendata
*opendata
,
2599 struct nfs_open_context
*ctx
)
2601 struct nfs4_state_owner
*sp
= opendata
->owner
;
2602 struct nfs_server
*server
= sp
->so_server
;
2603 struct dentry
*dentry
;
2604 struct nfs4_state
*state
;
2608 seq
= raw_seqcount_begin(&sp
->so_reclaim_seqcount
);
2610 ret
= _nfs4_proc_open(opendata
);
2614 state
= nfs4_opendata_to_nfs4_state(opendata
);
2615 ret
= PTR_ERR(state
);
2619 if (server
->caps
& NFS_CAP_POSIX_LOCK
)
2620 set_bit(NFS_STATE_POSIX_LOCKS
, &state
->flags
);
2621 if (opendata
->o_res
.rflags
& NFS4_OPEN_RESULT_MAY_NOTIFY_LOCK
)
2622 set_bit(NFS_STATE_MAY_NOTIFY_LOCK
, &state
->flags
);
2624 dentry
= opendata
->dentry
;
2625 if (d_really_is_negative(dentry
)) {
2626 struct dentry
*alias
;
2628 alias
= d_exact_alias(dentry
, state
->inode
);
2630 alias
= d_splice_alias(igrab(state
->inode
), dentry
);
2631 /* d_splice_alias() can't fail here - it's a non-directory */
2634 ctx
->dentry
= dentry
= alias
;
2636 nfs_set_verifier(dentry
,
2637 nfs_save_change_attribute(d_inode(opendata
->dir
)));
2640 ret
= nfs4_opendata_access(sp
->so_cred
, opendata
, state
, fmode
, flags
);
2644 if (d_inode(dentry
) == state
->inode
) {
2645 nfs_inode_attach_open_context(ctx
);
2646 if (read_seqcount_retry(&sp
->so_reclaim_seqcount
, seq
))
2647 nfs4_schedule_stateid_recovery(server
, state
);
2654 * Returns a referenced nfs4_state
2656 static int _nfs4_do_open(struct inode
*dir
,
2657 struct nfs_open_context
*ctx
,
2659 struct iattr
*sattr
,
2660 struct nfs4_label
*label
,
2663 struct nfs4_state_owner
*sp
;
2664 struct nfs4_state
*state
= NULL
;
2665 struct nfs_server
*server
= NFS_SERVER(dir
);
2666 struct nfs4_opendata
*opendata
;
2667 struct dentry
*dentry
= ctx
->dentry
;
2668 struct rpc_cred
*cred
= ctx
->cred
;
2669 struct nfs4_threshold
**ctx_th
= &ctx
->mdsthreshold
;
2670 fmode_t fmode
= ctx
->mode
& (FMODE_READ
|FMODE_WRITE
|FMODE_EXEC
);
2671 enum open_claim_type4 claim
= NFS4_OPEN_CLAIM_NULL
;
2672 struct nfs4_label
*olabel
= NULL
;
2675 /* Protect against reboot recovery conflicts */
2677 sp
= nfs4_get_state_owner(server
, cred
, GFP_KERNEL
);
2679 dprintk("nfs4_do_open: nfs4_get_state_owner failed!\n");
2682 status
= nfs4_client_recover_expired_lease(server
->nfs_client
);
2684 goto err_put_state_owner
;
2685 if (d_really_is_positive(dentry
))
2686 nfs4_return_incompatible_delegation(d_inode(dentry
), fmode
);
2688 if (d_really_is_positive(dentry
))
2689 claim
= NFS4_OPEN_CLAIM_FH
;
2690 opendata
= nfs4_opendata_alloc(dentry
, sp
, fmode
, flags
, sattr
,
2691 label
, claim
, GFP_KERNEL
);
2692 if (opendata
== NULL
)
2693 goto err_put_state_owner
;
2696 olabel
= nfs4_label_alloc(server
, GFP_KERNEL
);
2697 if (IS_ERR(olabel
)) {
2698 status
= PTR_ERR(olabel
);
2699 goto err_opendata_put
;
2703 if (server
->attr_bitmask
[2] & FATTR4_WORD2_MDSTHRESHOLD
) {
2704 if (!opendata
->f_attr
.mdsthreshold
) {
2705 opendata
->f_attr
.mdsthreshold
= pnfs_mdsthreshold_alloc();
2706 if (!opendata
->f_attr
.mdsthreshold
)
2707 goto err_free_label
;
2709 opendata
->o_arg
.open_bitmap
= &nfs4_pnfs_open_bitmap
[0];
2711 if (d_really_is_positive(dentry
))
2712 opendata
->state
= nfs4_get_open_state(d_inode(dentry
), sp
);
2714 status
= _nfs4_open_and_get_state(opendata
, fmode
, flags
, ctx
);
2716 goto err_free_label
;
2719 if ((opendata
->o_arg
.open_flags
& (O_CREAT
|O_EXCL
)) == (O_CREAT
|O_EXCL
) &&
2720 (opendata
->o_arg
.createmode
!= NFS4_CREATE_GUARDED
)) {
2721 nfs4_exclusive_attrset(opendata
, sattr
, &label
);
2723 * send create attributes which was not set by open
2724 * with an extra setattr.
2726 if (sattr
->ia_valid
& NFS4_VALID_ATTRS
) {
2727 nfs_fattr_init(opendata
->o_res
.f_attr
);
2728 status
= nfs4_do_setattr(state
->inode
, cred
,
2729 opendata
->o_res
.f_attr
, sattr
,
2730 ctx
, label
, olabel
);
2732 nfs_setattr_update_inode(state
->inode
, sattr
,
2733 opendata
->o_res
.f_attr
);
2734 nfs_setsecurity(state
->inode
, opendata
->o_res
.f_attr
, olabel
);
2738 if (opened
&& opendata
->file_created
)
2739 *opened
|= FILE_CREATED
;
2741 if (pnfs_use_threshold(ctx_th
, opendata
->f_attr
.mdsthreshold
, server
)) {
2742 *ctx_th
= opendata
->f_attr
.mdsthreshold
;
2743 opendata
->f_attr
.mdsthreshold
= NULL
;
2746 nfs4_label_free(olabel
);
2748 nfs4_opendata_put(opendata
);
2749 nfs4_put_state_owner(sp
);
2752 nfs4_label_free(olabel
);
2754 nfs4_opendata_put(opendata
);
2755 err_put_state_owner
:
2756 nfs4_put_state_owner(sp
);
2762 static struct nfs4_state
*nfs4_do_open(struct inode
*dir
,
2763 struct nfs_open_context
*ctx
,
2765 struct iattr
*sattr
,
2766 struct nfs4_label
*label
,
2769 struct nfs_server
*server
= NFS_SERVER(dir
);
2770 struct nfs4_exception exception
= { };
2771 struct nfs4_state
*res
;
2775 status
= _nfs4_do_open(dir
, ctx
, flags
, sattr
, label
, opened
);
2777 trace_nfs4_open_file(ctx
, flags
, status
);
2780 /* NOTE: BAD_SEQID means the server and client disagree about the
2781 * book-keeping w.r.t. state-changing operations
2782 * (OPEN/CLOSE/LOCK/LOCKU...)
2783 * It is actually a sign of a bug on the client or on the server.
2785 * If we receive a BAD_SEQID error in the particular case of
2786 * doing an OPEN, we assume that nfs_increment_open_seqid() will
2787 * have unhashed the old state_owner for us, and that we can
2788 * therefore safely retry using a new one. We should still warn
2789 * the user though...
2791 if (status
== -NFS4ERR_BAD_SEQID
) {
2792 pr_warn_ratelimited("NFS: v4 server %s "
2793 " returned a bad sequence-id error!\n",
2794 NFS_SERVER(dir
)->nfs_client
->cl_hostname
);
2795 exception
.retry
= 1;
2799 * BAD_STATEID on OPEN means that the server cancelled our
2800 * state before it received the OPEN_CONFIRM.
2801 * Recover by retrying the request as per the discussion
2802 * on Page 181 of RFC3530.
2804 if (status
== -NFS4ERR_BAD_STATEID
) {
2805 exception
.retry
= 1;
2808 if (status
== -EAGAIN
) {
2809 /* We must have found a delegation */
2810 exception
.retry
= 1;
2813 if (nfs4_clear_cap_atomic_open_v1(server
, status
, &exception
))
2815 res
= ERR_PTR(nfs4_handle_exception(server
,
2816 status
, &exception
));
2817 } while (exception
.retry
);
2821 static int _nfs4_do_setattr(struct inode
*inode
,
2822 struct nfs_setattrargs
*arg
,
2823 struct nfs_setattrres
*res
,
2824 struct rpc_cred
*cred
,
2825 struct nfs_open_context
*ctx
)
2827 struct nfs_server
*server
= NFS_SERVER(inode
);
2828 struct rpc_message msg
= {
2829 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETATTR
],
2834 struct rpc_cred
*delegation_cred
= NULL
;
2835 unsigned long timestamp
= jiffies
;
2840 nfs_fattr_init(res
->fattr
);
2842 /* Servers should only apply open mode checks for file size changes */
2843 truncate
= (arg
->iap
->ia_valid
& ATTR_SIZE
) ? true : false;
2844 fmode
= truncate
? FMODE_WRITE
: FMODE_READ
;
2846 if (nfs4_copy_delegation_stateid(inode
, fmode
, &arg
->stateid
, &delegation_cred
)) {
2847 /* Use that stateid */
2848 } else if (truncate
&& ctx
!= NULL
) {
2849 struct nfs_lock_context
*l_ctx
;
2850 if (!nfs4_valid_open_stateid(ctx
->state
))
2852 l_ctx
= nfs_get_lock_context(ctx
);
2854 return PTR_ERR(l_ctx
);
2855 status
= nfs4_select_rw_stateid(ctx
->state
, FMODE_WRITE
, l_ctx
,
2856 &arg
->stateid
, &delegation_cred
);
2857 nfs_put_lock_context(l_ctx
);
2861 nfs4_stateid_copy(&arg
->stateid
, &zero_stateid
);
2862 if (delegation_cred
)
2863 msg
.rpc_cred
= delegation_cred
;
2865 status
= nfs4_call_sync(server
->client
, server
, &msg
, &arg
->seq_args
, &res
->seq_res
, 1);
2867 put_rpccred(delegation_cred
);
2868 if (status
== 0 && ctx
!= NULL
)
2869 renew_lease(server
, timestamp
);
2870 trace_nfs4_setattr(inode
, &arg
->stateid
, status
);
2874 static int nfs4_do_setattr(struct inode
*inode
, struct rpc_cred
*cred
,
2875 struct nfs_fattr
*fattr
, struct iattr
*sattr
,
2876 struct nfs_open_context
*ctx
, struct nfs4_label
*ilabel
,
2877 struct nfs4_label
*olabel
)
2879 struct nfs_server
*server
= NFS_SERVER(inode
);
2880 struct nfs4_state
*state
= ctx
? ctx
->state
: NULL
;
2881 struct nfs_setattrargs arg
= {
2882 .fh
= NFS_FH(inode
),
2885 .bitmask
= server
->attr_bitmask
,
2888 struct nfs_setattrres res
= {
2893 struct nfs4_exception exception
= {
2896 .stateid
= &arg
.stateid
,
2900 arg
.bitmask
= nfs4_bitmask(server
, ilabel
);
2902 arg
.bitmask
= nfs4_bitmask(server
, olabel
);
2905 err
= _nfs4_do_setattr(inode
, &arg
, &res
, cred
, ctx
);
2907 case -NFS4ERR_OPENMODE
:
2908 if (!(sattr
->ia_valid
& ATTR_SIZE
)) {
2909 pr_warn_once("NFSv4: server %s is incorrectly "
2910 "applying open mode checks to "
2911 "a SETATTR that is not "
2912 "changing file size.\n",
2913 server
->nfs_client
->cl_hostname
);
2915 if (state
&& !(state
->state
& FMODE_WRITE
)) {
2917 if (sattr
->ia_valid
& ATTR_OPEN
)
2922 err
= nfs4_handle_exception(server
, err
, &exception
);
2923 } while (exception
.retry
);
2929 nfs4_wait_on_layoutreturn(struct inode
*inode
, struct rpc_task
*task
)
2931 if (inode
== NULL
|| !nfs_have_layout(inode
))
2934 return pnfs_wait_on_layoutreturn(inode
, task
);
2937 struct nfs4_closedata
{
2938 struct inode
*inode
;
2939 struct nfs4_state
*state
;
2940 struct nfs_closeargs arg
;
2941 struct nfs_closeres res
;
2943 struct nfs4_layoutreturn_args arg
;
2944 struct nfs4_layoutreturn_res res
;
2945 struct nfs4_xdr_opaque_data ld_private
;
2949 struct nfs_fattr fattr
;
2950 unsigned long timestamp
;
2953 static void nfs4_free_closedata(void *data
)
2955 struct nfs4_closedata
*calldata
= data
;
2956 struct nfs4_state_owner
*sp
= calldata
->state
->owner
;
2957 struct super_block
*sb
= calldata
->state
->inode
->i_sb
;
2959 if (calldata
->lr
.roc
)
2960 pnfs_roc_release(&calldata
->lr
.arg
, &calldata
->lr
.res
,
2961 calldata
->res
.lr_ret
);
2962 nfs4_put_open_state(calldata
->state
);
2963 nfs_free_seqid(calldata
->arg
.seqid
);
2964 nfs4_put_state_owner(sp
);
2965 nfs_sb_deactive(sb
);
2969 static void nfs4_close_done(struct rpc_task
*task
, void *data
)
2971 struct nfs4_closedata
*calldata
= data
;
2972 struct nfs4_state
*state
= calldata
->state
;
2973 struct nfs_server
*server
= NFS_SERVER(calldata
->inode
);
2974 nfs4_stateid
*res_stateid
= NULL
;
2976 dprintk("%s: begin!\n", __func__
);
2977 if (!nfs4_sequence_done(task
, &calldata
->res
.seq_res
))
2979 trace_nfs4_close(state
, &calldata
->arg
, &calldata
->res
, task
->tk_status
);
2981 /* Handle Layoutreturn errors */
2982 if (calldata
->arg
.lr_args
&& task
->tk_status
!= 0) {
2983 switch (calldata
->res
.lr_ret
) {
2985 calldata
->res
.lr_ret
= -NFS4ERR_NOMATCHING_LAYOUT
;
2988 calldata
->arg
.lr_args
= NULL
;
2989 calldata
->res
.lr_res
= NULL
;
2991 case -NFS4ERR_ADMIN_REVOKED
:
2992 case -NFS4ERR_DELEG_REVOKED
:
2993 case -NFS4ERR_EXPIRED
:
2994 case -NFS4ERR_BAD_STATEID
:
2995 case -NFS4ERR_OLD_STATEID
:
2996 case -NFS4ERR_UNKNOWN_LAYOUTTYPE
:
2997 case -NFS4ERR_WRONG_CRED
:
2998 calldata
->arg
.lr_args
= NULL
;
2999 calldata
->res
.lr_res
= NULL
;
3000 calldata
->res
.lr_ret
= 0;
3001 rpc_restart_call_prepare(task
);
3006 /* hmm. we are done with the inode, and in the process of freeing
3007 * the state_owner. we keep this around to process errors
3009 switch (task
->tk_status
) {
3011 res_stateid
= &calldata
->res
.stateid
;
3012 renew_lease(server
, calldata
->timestamp
);
3014 case -NFS4ERR_ACCESS
:
3015 if (calldata
->arg
.bitmask
!= NULL
) {
3016 calldata
->arg
.bitmask
= NULL
;
3017 calldata
->res
.fattr
= NULL
;
3018 task
->tk_status
= 0;
3019 rpc_restart_call_prepare(task
);
3024 case -NFS4ERR_ADMIN_REVOKED
:
3025 case -NFS4ERR_STALE_STATEID
:
3026 case -NFS4ERR_EXPIRED
:
3027 nfs4_free_revoked_stateid(server
,
3028 &calldata
->arg
.stateid
,
3029 task
->tk_msg
.rpc_cred
);
3030 case -NFS4ERR_OLD_STATEID
:
3031 case -NFS4ERR_BAD_STATEID
:
3032 if (!nfs4_stateid_match(&calldata
->arg
.stateid
,
3033 &state
->open_stateid
)) {
3034 rpc_restart_call_prepare(task
);
3037 if (calldata
->arg
.fmode
== 0)
3040 if (nfs4_async_handle_error(task
, server
, state
, NULL
) == -EAGAIN
) {
3041 rpc_restart_call_prepare(task
);
3045 nfs_clear_open_stateid(state
, &calldata
->arg
.stateid
,
3046 res_stateid
, calldata
->arg
.fmode
);
3048 nfs_release_seqid(calldata
->arg
.seqid
);
3049 nfs_refresh_inode(calldata
->inode
, &calldata
->fattr
);
3050 dprintk("%s: done, ret = %d!\n", __func__
, task
->tk_status
);
3053 static void nfs4_close_prepare(struct rpc_task
*task
, void *data
)
3055 struct nfs4_closedata
*calldata
= data
;
3056 struct nfs4_state
*state
= calldata
->state
;
3057 struct inode
*inode
= calldata
->inode
;
3058 bool is_rdonly
, is_wronly
, is_rdwr
;
3061 dprintk("%s: begin!\n", __func__
);
3062 if (nfs_wait_on_sequence(calldata
->arg
.seqid
, task
) != 0)
3065 task
->tk_msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_OPEN_DOWNGRADE
];
3066 spin_lock(&state
->owner
->so_lock
);
3067 is_rdwr
= test_bit(NFS_O_RDWR_STATE
, &state
->flags
);
3068 is_rdonly
= test_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
3069 is_wronly
= test_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
3070 nfs4_stateid_copy(&calldata
->arg
.stateid
, &state
->open_stateid
);
3071 /* Calculate the change in open mode */
3072 calldata
->arg
.fmode
= 0;
3073 if (state
->n_rdwr
== 0) {
3074 if (state
->n_rdonly
== 0)
3075 call_close
|= is_rdonly
;
3077 calldata
->arg
.fmode
|= FMODE_READ
;
3078 if (state
->n_wronly
== 0)
3079 call_close
|= is_wronly
;
3081 calldata
->arg
.fmode
|= FMODE_WRITE
;
3082 if (calldata
->arg
.fmode
!= (FMODE_READ
|FMODE_WRITE
))
3083 call_close
|= is_rdwr
;
3085 calldata
->arg
.fmode
|= FMODE_READ
|FMODE_WRITE
;
3087 if (!nfs4_valid_open_stateid(state
) ||
3088 test_bit(NFS_OPEN_STATE
, &state
->flags
) == 0)
3090 spin_unlock(&state
->owner
->so_lock
);
3093 /* Note: exit _without_ calling nfs4_close_done */
3097 if (!calldata
->lr
.roc
&& nfs4_wait_on_layoutreturn(inode
, task
)) {
3098 nfs_release_seqid(calldata
->arg
.seqid
);
3102 if (calldata
->arg
.fmode
== 0)
3103 task
->tk_msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_CLOSE
];
3105 if (calldata
->arg
.fmode
== 0 || calldata
->arg
.fmode
== FMODE_READ
) {
3106 /* Close-to-open cache consistency revalidation */
3107 if (!nfs4_have_delegation(inode
, FMODE_READ
))
3108 calldata
->arg
.bitmask
= NFS_SERVER(inode
)->cache_consistency_bitmask
;
3110 calldata
->arg
.bitmask
= NULL
;
3113 calldata
->arg
.share_access
=
3114 nfs4_map_atomic_open_share(NFS_SERVER(inode
),
3115 calldata
->arg
.fmode
, 0);
3117 if (calldata
->res
.fattr
== NULL
)
3118 calldata
->arg
.bitmask
= NULL
;
3119 else if (calldata
->arg
.bitmask
== NULL
)
3120 calldata
->res
.fattr
= NULL
;
3121 calldata
->timestamp
= jiffies
;
3122 if (nfs4_setup_sequence(NFS_SERVER(inode
)->nfs_client
,
3123 &calldata
->arg
.seq_args
,
3124 &calldata
->res
.seq_res
,
3126 nfs_release_seqid(calldata
->arg
.seqid
);
3127 dprintk("%s: done!\n", __func__
);
3130 task
->tk_action
= NULL
;
3132 nfs4_sequence_done(task
, &calldata
->res
.seq_res
);
3135 static const struct rpc_call_ops nfs4_close_ops
= {
3136 .rpc_call_prepare
= nfs4_close_prepare
,
3137 .rpc_call_done
= nfs4_close_done
,
3138 .rpc_release
= nfs4_free_closedata
,
3142 * It is possible for data to be read/written from a mem-mapped file
3143 * after the sys_close call (which hits the vfs layer as a flush).
3144 * This means that we can't safely call nfsv4 close on a file until
3145 * the inode is cleared. This in turn means that we are not good
3146 * NFSv4 citizens - we do not indicate to the server to update the file's
3147 * share state even when we are done with one of the three share
3148 * stateid's in the inode.
3150 * NOTE: Caller must be holding the sp->so_owner semaphore!
3152 int nfs4_do_close(struct nfs4_state
*state
, gfp_t gfp_mask
, int wait
)
3154 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
3155 struct nfs_seqid
*(*alloc_seqid
)(struct nfs_seqid_counter
*, gfp_t
);
3156 struct nfs4_closedata
*calldata
;
3157 struct nfs4_state_owner
*sp
= state
->owner
;
3158 struct rpc_task
*task
;
3159 struct rpc_message msg
= {
3160 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_CLOSE
],
3161 .rpc_cred
= state
->owner
->so_cred
,
3163 struct rpc_task_setup task_setup_data
= {
3164 .rpc_client
= server
->client
,
3165 .rpc_message
= &msg
,
3166 .callback_ops
= &nfs4_close_ops
,
3167 .workqueue
= nfsiod_workqueue
,
3168 .flags
= RPC_TASK_ASYNC
,
3170 int status
= -ENOMEM
;
3172 nfs4_state_protect(server
->nfs_client
, NFS_SP4_MACH_CRED_CLEANUP
,
3173 &task_setup_data
.rpc_client
, &msg
);
3175 calldata
= kzalloc(sizeof(*calldata
), gfp_mask
);
3176 if (calldata
== NULL
)
3178 nfs4_init_sequence(&calldata
->arg
.seq_args
, &calldata
->res
.seq_res
, 1);
3179 calldata
->inode
= state
->inode
;
3180 calldata
->state
= state
;
3181 calldata
->arg
.fh
= NFS_FH(state
->inode
);
3182 /* Serialization for the sequence id */
3183 alloc_seqid
= server
->nfs_client
->cl_mvops
->alloc_seqid
;
3184 calldata
->arg
.seqid
= alloc_seqid(&state
->owner
->so_seqid
, gfp_mask
);
3185 if (IS_ERR(calldata
->arg
.seqid
))
3186 goto out_free_calldata
;
3187 nfs_fattr_init(&calldata
->fattr
);
3188 calldata
->arg
.fmode
= 0;
3189 calldata
->lr
.arg
.ld_private
= &calldata
->lr
.ld_private
;
3190 calldata
->res
.fattr
= &calldata
->fattr
;
3191 calldata
->res
.seqid
= calldata
->arg
.seqid
;
3192 calldata
->res
.server
= server
;
3193 calldata
->res
.lr_ret
= -NFS4ERR_NOMATCHING_LAYOUT
;
3194 calldata
->lr
.roc
= pnfs_roc(state
->inode
,
3195 &calldata
->lr
.arg
, &calldata
->lr
.res
, msg
.rpc_cred
);
3196 if (calldata
->lr
.roc
) {
3197 calldata
->arg
.lr_args
= &calldata
->lr
.arg
;
3198 calldata
->res
.lr_res
= &calldata
->lr
.res
;
3200 nfs_sb_active(calldata
->inode
->i_sb
);
3202 msg
.rpc_argp
= &calldata
->arg
;
3203 msg
.rpc_resp
= &calldata
->res
;
3204 task_setup_data
.callback_data
= calldata
;
3205 task
= rpc_run_task(&task_setup_data
);
3207 return PTR_ERR(task
);
3210 status
= rpc_wait_for_completion_task(task
);
3216 nfs4_put_open_state(state
);
3217 nfs4_put_state_owner(sp
);
3221 static struct inode
*
3222 nfs4_atomic_open(struct inode
*dir
, struct nfs_open_context
*ctx
,
3223 int open_flags
, struct iattr
*attr
, int *opened
)
3225 struct nfs4_state
*state
;
3226 struct nfs4_label l
= {0, 0, 0, NULL
}, *label
= NULL
;
3228 label
= nfs4_label_init_security(dir
, ctx
->dentry
, attr
, &l
);
3230 /* Protect against concurrent sillydeletes */
3231 state
= nfs4_do_open(dir
, ctx
, open_flags
, attr
, label
, opened
);
3233 nfs4_label_release_security(label
);
3236 return ERR_CAST(state
);
3237 return state
->inode
;
3240 static void nfs4_close_context(struct nfs_open_context
*ctx
, int is_sync
)
3242 if (ctx
->state
== NULL
)
3245 nfs4_close_sync(ctx
->state
, ctx
->mode
);
3247 nfs4_close_state(ctx
->state
, ctx
->mode
);
3250 #define FATTR4_WORD1_NFS40_MASK (2*FATTR4_WORD1_MOUNTED_ON_FILEID - 1UL)
3251 #define FATTR4_WORD2_NFS41_MASK (2*FATTR4_WORD2_SUPPATTR_EXCLCREAT - 1UL)
3252 #define FATTR4_WORD2_NFS42_MASK (2*FATTR4_WORD2_MODE_UMASK - 1UL)
3254 static int _nfs4_server_capabilities(struct nfs_server
*server
, struct nfs_fh
*fhandle
)
3256 u32 bitmask
[3] = {}, minorversion
= server
->nfs_client
->cl_minorversion
;
3257 struct nfs4_server_caps_arg args
= {
3261 struct nfs4_server_caps_res res
= {};
3262 struct rpc_message msg
= {
3263 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SERVER_CAPS
],
3269 bitmask
[0] = FATTR4_WORD0_SUPPORTED_ATTRS
|
3270 FATTR4_WORD0_FH_EXPIRE_TYPE
|
3271 FATTR4_WORD0_LINK_SUPPORT
|
3272 FATTR4_WORD0_SYMLINK_SUPPORT
|
3273 FATTR4_WORD0_ACLSUPPORT
;
3275 bitmask
[2] = FATTR4_WORD2_SUPPATTR_EXCLCREAT
;
3277 status
= nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
3279 /* Sanity check the server answers */
3280 switch (minorversion
) {
3282 res
.attr_bitmask
[1] &= FATTR4_WORD1_NFS40_MASK
;
3283 res
.attr_bitmask
[2] = 0;
3286 res
.attr_bitmask
[2] &= FATTR4_WORD2_NFS41_MASK
;
3289 res
.attr_bitmask
[2] &= FATTR4_WORD2_NFS42_MASK
;
3291 memcpy(server
->attr_bitmask
, res
.attr_bitmask
, sizeof(server
->attr_bitmask
));
3292 server
->caps
&= ~(NFS_CAP_ACLS
|NFS_CAP_HARDLINKS
|
3293 NFS_CAP_SYMLINKS
|NFS_CAP_FILEID
|
3294 NFS_CAP_MODE
|NFS_CAP_NLINK
|NFS_CAP_OWNER
|
3295 NFS_CAP_OWNER_GROUP
|NFS_CAP_ATIME
|
3296 NFS_CAP_CTIME
|NFS_CAP_MTIME
|
3297 NFS_CAP_SECURITY_LABEL
);
3298 if (res
.attr_bitmask
[0] & FATTR4_WORD0_ACL
&&
3299 res
.acl_bitmask
& ACL4_SUPPORT_ALLOW_ACL
)
3300 server
->caps
|= NFS_CAP_ACLS
;
3301 if (res
.has_links
!= 0)
3302 server
->caps
|= NFS_CAP_HARDLINKS
;
3303 if (res
.has_symlinks
!= 0)
3304 server
->caps
|= NFS_CAP_SYMLINKS
;
3305 if (res
.attr_bitmask
[0] & FATTR4_WORD0_FILEID
)
3306 server
->caps
|= NFS_CAP_FILEID
;
3307 if (res
.attr_bitmask
[1] & FATTR4_WORD1_MODE
)
3308 server
->caps
|= NFS_CAP_MODE
;
3309 if (res
.attr_bitmask
[1] & FATTR4_WORD1_NUMLINKS
)
3310 server
->caps
|= NFS_CAP_NLINK
;
3311 if (res
.attr_bitmask
[1] & FATTR4_WORD1_OWNER
)
3312 server
->caps
|= NFS_CAP_OWNER
;
3313 if (res
.attr_bitmask
[1] & FATTR4_WORD1_OWNER_GROUP
)
3314 server
->caps
|= NFS_CAP_OWNER_GROUP
;
3315 if (res
.attr_bitmask
[1] & FATTR4_WORD1_TIME_ACCESS
)
3316 server
->caps
|= NFS_CAP_ATIME
;
3317 if (res
.attr_bitmask
[1] & FATTR4_WORD1_TIME_METADATA
)
3318 server
->caps
|= NFS_CAP_CTIME
;
3319 if (res
.attr_bitmask
[1] & FATTR4_WORD1_TIME_MODIFY
)
3320 server
->caps
|= NFS_CAP_MTIME
;
3321 #ifdef CONFIG_NFS_V4_SECURITY_LABEL
3322 if (res
.attr_bitmask
[2] & FATTR4_WORD2_SECURITY_LABEL
)
3323 server
->caps
|= NFS_CAP_SECURITY_LABEL
;
3325 memcpy(server
->attr_bitmask_nl
, res
.attr_bitmask
,
3326 sizeof(server
->attr_bitmask
));
3327 server
->attr_bitmask_nl
[2] &= ~FATTR4_WORD2_SECURITY_LABEL
;
3329 memcpy(server
->cache_consistency_bitmask
, res
.attr_bitmask
, sizeof(server
->cache_consistency_bitmask
));
3330 server
->cache_consistency_bitmask
[0] &= FATTR4_WORD0_CHANGE
|FATTR4_WORD0_SIZE
;
3331 server
->cache_consistency_bitmask
[1] &= FATTR4_WORD1_TIME_METADATA
|FATTR4_WORD1_TIME_MODIFY
;
3332 server
->cache_consistency_bitmask
[2] = 0;
3333 memcpy(server
->exclcreat_bitmask
, res
.exclcreat_bitmask
,
3334 sizeof(server
->exclcreat_bitmask
));
3335 server
->acl_bitmask
= res
.acl_bitmask
;
3336 server
->fh_expire_type
= res
.fh_expire_type
;
3342 int nfs4_server_capabilities(struct nfs_server
*server
, struct nfs_fh
*fhandle
)
3344 struct nfs4_exception exception
= { };
3347 err
= nfs4_handle_exception(server
,
3348 _nfs4_server_capabilities(server
, fhandle
),
3350 } while (exception
.retry
);
3354 static int _nfs4_lookup_root(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
3355 struct nfs_fsinfo
*info
)
3358 struct nfs4_lookup_root_arg args
= {
3361 struct nfs4_lookup_res res
= {
3363 .fattr
= info
->fattr
,
3366 struct rpc_message msg
= {
3367 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOOKUP_ROOT
],
3372 bitmask
[0] = nfs4_fattr_bitmap
[0];
3373 bitmask
[1] = nfs4_fattr_bitmap
[1];
3375 * Process the label in the upcoming getfattr
3377 bitmask
[2] = nfs4_fattr_bitmap
[2] & ~FATTR4_WORD2_SECURITY_LABEL
;
3379 nfs_fattr_init(info
->fattr
);
3380 return nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
3383 static int nfs4_lookup_root(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
3384 struct nfs_fsinfo
*info
)
3386 struct nfs4_exception exception
= { };
3389 err
= _nfs4_lookup_root(server
, fhandle
, info
);
3390 trace_nfs4_lookup_root(server
, fhandle
, info
->fattr
, err
);
3393 case -NFS4ERR_WRONGSEC
:
3396 err
= nfs4_handle_exception(server
, err
, &exception
);
3398 } while (exception
.retry
);
3403 static int nfs4_lookup_root_sec(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
3404 struct nfs_fsinfo
*info
, rpc_authflavor_t flavor
)
3406 struct rpc_auth_create_args auth_args
= {
3407 .pseudoflavor
= flavor
,
3409 struct rpc_auth
*auth
;
3411 auth
= rpcauth_create(&auth_args
, server
->client
);
3414 return nfs4_lookup_root(server
, fhandle
, info
);
3418 * Retry pseudoroot lookup with various security flavors. We do this when:
3420 * NFSv4.0: the PUTROOTFH operation returns NFS4ERR_WRONGSEC
3421 * NFSv4.1: the server does not support the SECINFO_NO_NAME operation
3423 * Returns zero on success, or a negative NFS4ERR value, or a
3424 * negative errno value.
3426 static int nfs4_find_root_sec(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
3427 struct nfs_fsinfo
*info
)
3429 /* Per 3530bis 15.33.5 */
3430 static const rpc_authflavor_t flav_array
[] = {
3434 RPC_AUTH_UNIX
, /* courtesy */
3437 int status
= -EPERM
;
3440 if (server
->auth_info
.flavor_len
> 0) {
3441 /* try each flavor specified by user */
3442 for (i
= 0; i
< server
->auth_info
.flavor_len
; i
++) {
3443 status
= nfs4_lookup_root_sec(server
, fhandle
, info
,
3444 server
->auth_info
.flavors
[i
]);
3445 if (status
== -NFS4ERR_WRONGSEC
|| status
== -EACCES
)
3450 /* no flavors specified by user, try default list */
3451 for (i
= 0; i
< ARRAY_SIZE(flav_array
); i
++) {
3452 status
= nfs4_lookup_root_sec(server
, fhandle
, info
,
3454 if (status
== -NFS4ERR_WRONGSEC
|| status
== -EACCES
)
3461 * -EACCESS could mean that the user doesn't have correct permissions
3462 * to access the mount. It could also mean that we tried to mount
3463 * with a gss auth flavor, but rpc.gssd isn't running. Either way,
3464 * existing mount programs don't handle -EACCES very well so it should
3465 * be mapped to -EPERM instead.
3467 if (status
== -EACCES
)
3473 * nfs4_proc_get_rootfh - get file handle for server's pseudoroot
3474 * @server: initialized nfs_server handle
3475 * @fhandle: we fill in the pseudo-fs root file handle
3476 * @info: we fill in an FSINFO struct
3477 * @auth_probe: probe the auth flavours
3479 * Returns zero on success, or a negative errno.
3481 int nfs4_proc_get_rootfh(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
3482 struct nfs_fsinfo
*info
,
3488 status
= nfs4_lookup_root(server
, fhandle
, info
);
3490 if (auth_probe
|| status
== NFS4ERR_WRONGSEC
)
3491 status
= server
->nfs_client
->cl_mvops
->find_root_sec(server
,
3495 status
= nfs4_server_capabilities(server
, fhandle
);
3497 status
= nfs4_do_fsinfo(server
, fhandle
, info
);
3499 return nfs4_map_errors(status
);
3502 static int nfs4_proc_get_root(struct nfs_server
*server
, struct nfs_fh
*mntfh
,
3503 struct nfs_fsinfo
*info
)
3506 struct nfs_fattr
*fattr
= info
->fattr
;
3507 struct nfs4_label
*label
= NULL
;
3509 error
= nfs4_server_capabilities(server
, mntfh
);
3511 dprintk("nfs4_get_root: getcaps error = %d\n", -error
);
3515 label
= nfs4_label_alloc(server
, GFP_KERNEL
);
3517 return PTR_ERR(label
);
3519 error
= nfs4_proc_getattr(server
, mntfh
, fattr
, label
);
3521 dprintk("nfs4_get_root: getattr error = %d\n", -error
);
3522 goto err_free_label
;
3525 if (fattr
->valid
& NFS_ATTR_FATTR_FSID
&&
3526 !nfs_fsid_equal(&server
->fsid
, &fattr
->fsid
))
3527 memcpy(&server
->fsid
, &fattr
->fsid
, sizeof(server
->fsid
));
3530 nfs4_label_free(label
);
3536 * Get locations and (maybe) other attributes of a referral.
3537 * Note that we'll actually follow the referral later when
3538 * we detect fsid mismatch in inode revalidation
3540 static int nfs4_get_referral(struct rpc_clnt
*client
, struct inode
*dir
,
3541 const struct qstr
*name
, struct nfs_fattr
*fattr
,
3542 struct nfs_fh
*fhandle
)
3544 int status
= -ENOMEM
;
3545 struct page
*page
= NULL
;
3546 struct nfs4_fs_locations
*locations
= NULL
;
3548 page
= alloc_page(GFP_KERNEL
);
3551 locations
= kmalloc(sizeof(struct nfs4_fs_locations
), GFP_KERNEL
);
3552 if (locations
== NULL
)
3555 status
= nfs4_proc_fs_locations(client
, dir
, name
, locations
, page
);
3560 * If the fsid didn't change, this is a migration event, not a
3561 * referral. Cause us to drop into the exception handler, which
3562 * will kick off migration recovery.
3564 if (nfs_fsid_equal(&NFS_SERVER(dir
)->fsid
, &locations
->fattr
.fsid
)) {
3565 dprintk("%s: server did not return a different fsid for"
3566 " a referral at %s\n", __func__
, name
->name
);
3567 status
= -NFS4ERR_MOVED
;
3570 /* Fixup attributes for the nfs_lookup() call to nfs_fhget() */
3571 nfs_fixup_referral_attributes(&locations
->fattr
);
3573 /* replace the lookup nfs_fattr with the locations nfs_fattr */
3574 memcpy(fattr
, &locations
->fattr
, sizeof(struct nfs_fattr
));
3575 memset(fhandle
, 0, sizeof(struct nfs_fh
));
3583 static int _nfs4_proc_getattr(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
3584 struct nfs_fattr
*fattr
, struct nfs4_label
*label
)
3586 struct nfs4_getattr_arg args
= {
3588 .bitmask
= server
->attr_bitmask
,
3590 struct nfs4_getattr_res res
= {
3595 struct rpc_message msg
= {
3596 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GETATTR
],
3601 args
.bitmask
= nfs4_bitmask(server
, label
);
3603 nfs_fattr_init(fattr
);
3604 return nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
3607 static int nfs4_proc_getattr(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
3608 struct nfs_fattr
*fattr
, struct nfs4_label
*label
)
3610 struct nfs4_exception exception
= { };
3613 err
= _nfs4_proc_getattr(server
, fhandle
, fattr
, label
);
3614 trace_nfs4_getattr(server
, fhandle
, fattr
, err
);
3615 err
= nfs4_handle_exception(server
, err
,
3617 } while (exception
.retry
);
3622 * The file is not closed if it is opened due to the a request to change
3623 * the size of the file. The open call will not be needed once the
3624 * VFS layer lookup-intents are implemented.
3626 * Close is called when the inode is destroyed.
3627 * If we haven't opened the file for O_WRONLY, we
3628 * need to in the size_change case to obtain a stateid.
3631 * Because OPEN is always done by name in nfsv4, it is
3632 * possible that we opened a different file by the same
3633 * name. We can recognize this race condition, but we
3634 * can't do anything about it besides returning an error.
3636 * This will be fixed with VFS changes (lookup-intent).
3639 nfs4_proc_setattr(struct dentry
*dentry
, struct nfs_fattr
*fattr
,
3640 struct iattr
*sattr
)
3642 struct inode
*inode
= d_inode(dentry
);
3643 struct rpc_cred
*cred
= NULL
;
3644 struct nfs_open_context
*ctx
= NULL
;
3645 struct nfs4_label
*label
= NULL
;
3648 if (pnfs_ld_layoutret_on_setattr(inode
) &&
3649 sattr
->ia_valid
& ATTR_SIZE
&&
3650 sattr
->ia_size
< i_size_read(inode
))
3651 pnfs_commit_and_return_layout(inode
);
3653 nfs_fattr_init(fattr
);
3655 /* Deal with open(O_TRUNC) */
3656 if (sattr
->ia_valid
& ATTR_OPEN
)
3657 sattr
->ia_valid
&= ~(ATTR_MTIME
|ATTR_CTIME
);
3659 /* Optimization: if the end result is no change, don't RPC */
3660 if ((sattr
->ia_valid
& ~(ATTR_FILE
|ATTR_OPEN
)) == 0)
3663 /* Search for an existing open(O_WRITE) file */
3664 if (sattr
->ia_valid
& ATTR_FILE
) {
3666 ctx
= nfs_file_open_context(sattr
->ia_file
);
3671 label
= nfs4_label_alloc(NFS_SERVER(inode
), GFP_KERNEL
);
3673 return PTR_ERR(label
);
3675 status
= nfs4_do_setattr(inode
, cred
, fattr
, sattr
, ctx
, NULL
, label
);
3677 nfs_setattr_update_inode(inode
, sattr
, fattr
);
3678 nfs_setsecurity(inode
, fattr
, label
);
3680 nfs4_label_free(label
);
3684 static int _nfs4_proc_lookup(struct rpc_clnt
*clnt
, struct inode
*dir
,
3685 const struct qstr
*name
, struct nfs_fh
*fhandle
,
3686 struct nfs_fattr
*fattr
, struct nfs4_label
*label
)
3688 struct nfs_server
*server
= NFS_SERVER(dir
);
3690 struct nfs4_lookup_arg args
= {
3691 .bitmask
= server
->attr_bitmask
,
3692 .dir_fh
= NFS_FH(dir
),
3695 struct nfs4_lookup_res res
= {
3701 struct rpc_message msg
= {
3702 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOOKUP
],
3707 args
.bitmask
= nfs4_bitmask(server
, label
);
3709 nfs_fattr_init(fattr
);
3711 dprintk("NFS call lookup %s\n", name
->name
);
3712 status
= nfs4_call_sync(clnt
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
3713 dprintk("NFS reply lookup: %d\n", status
);
3717 static void nfs_fixup_secinfo_attributes(struct nfs_fattr
*fattr
)
3719 fattr
->valid
|= NFS_ATTR_FATTR_TYPE
| NFS_ATTR_FATTR_MODE
|
3720 NFS_ATTR_FATTR_NLINK
| NFS_ATTR_FATTR_MOUNTPOINT
;
3721 fattr
->mode
= S_IFDIR
| S_IRUGO
| S_IXUGO
;
3725 static int nfs4_proc_lookup_common(struct rpc_clnt
**clnt
, struct inode
*dir
,
3726 const struct qstr
*name
, struct nfs_fh
*fhandle
,
3727 struct nfs_fattr
*fattr
, struct nfs4_label
*label
)
3729 struct nfs4_exception exception
= { };
3730 struct rpc_clnt
*client
= *clnt
;
3733 err
= _nfs4_proc_lookup(client
, dir
, name
, fhandle
, fattr
, label
);
3734 trace_nfs4_lookup(dir
, name
, err
);
3736 case -NFS4ERR_BADNAME
:
3739 case -NFS4ERR_MOVED
:
3740 err
= nfs4_get_referral(client
, dir
, name
, fattr
, fhandle
);
3741 if (err
== -NFS4ERR_MOVED
)
3742 err
= nfs4_handle_exception(NFS_SERVER(dir
), err
, &exception
);
3744 case -NFS4ERR_WRONGSEC
:
3746 if (client
!= *clnt
)
3748 client
= nfs4_negotiate_security(client
, dir
, name
);
3750 return PTR_ERR(client
);
3752 exception
.retry
= 1;
3755 err
= nfs4_handle_exception(NFS_SERVER(dir
), err
, &exception
);
3757 } while (exception
.retry
);
3762 else if (client
!= *clnt
)
3763 rpc_shutdown_client(client
);
3768 static int nfs4_proc_lookup(struct inode
*dir
, const struct qstr
*name
,
3769 struct nfs_fh
*fhandle
, struct nfs_fattr
*fattr
,
3770 struct nfs4_label
*label
)
3773 struct rpc_clnt
*client
= NFS_CLIENT(dir
);
3775 status
= nfs4_proc_lookup_common(&client
, dir
, name
, fhandle
, fattr
, label
);
3776 if (client
!= NFS_CLIENT(dir
)) {
3777 rpc_shutdown_client(client
);
3778 nfs_fixup_secinfo_attributes(fattr
);
3784 nfs4_proc_lookup_mountpoint(struct inode
*dir
, const struct qstr
*name
,
3785 struct nfs_fh
*fhandle
, struct nfs_fattr
*fattr
)
3787 struct rpc_clnt
*client
= NFS_CLIENT(dir
);
3790 status
= nfs4_proc_lookup_common(&client
, dir
, name
, fhandle
, fattr
, NULL
);
3792 return ERR_PTR(status
);
3793 return (client
== NFS_CLIENT(dir
)) ? rpc_clone_client(client
) : client
;
3796 static int _nfs4_proc_access(struct inode
*inode
, struct nfs_access_entry
*entry
)
3798 struct nfs_server
*server
= NFS_SERVER(inode
);
3799 struct nfs4_accessargs args
= {
3800 .fh
= NFS_FH(inode
),
3801 .bitmask
= server
->cache_consistency_bitmask
,
3803 struct nfs4_accessres res
= {
3806 struct rpc_message msg
= {
3807 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_ACCESS
],
3810 .rpc_cred
= entry
->cred
,
3812 int mode
= entry
->mask
;
3816 * Determine which access bits we want to ask for...
3818 if (mode
& MAY_READ
)
3819 args
.access
|= NFS4_ACCESS_READ
;
3820 if (S_ISDIR(inode
->i_mode
)) {
3821 if (mode
& MAY_WRITE
)
3822 args
.access
|= NFS4_ACCESS_MODIFY
| NFS4_ACCESS_EXTEND
| NFS4_ACCESS_DELETE
;
3823 if (mode
& MAY_EXEC
)
3824 args
.access
|= NFS4_ACCESS_LOOKUP
;
3826 if (mode
& MAY_WRITE
)
3827 args
.access
|= NFS4_ACCESS_MODIFY
| NFS4_ACCESS_EXTEND
;
3828 if (mode
& MAY_EXEC
)
3829 args
.access
|= NFS4_ACCESS_EXECUTE
;
3832 res
.fattr
= nfs_alloc_fattr();
3833 if (res
.fattr
== NULL
)
3836 status
= nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
3838 nfs_access_set_mask(entry
, res
.access
);
3839 nfs_refresh_inode(inode
, res
.fattr
);
3841 nfs_free_fattr(res
.fattr
);
3845 static int nfs4_proc_access(struct inode
*inode
, struct nfs_access_entry
*entry
)
3847 struct nfs4_exception exception
= { };
3850 err
= _nfs4_proc_access(inode
, entry
);
3851 trace_nfs4_access(inode
, err
);
3852 err
= nfs4_handle_exception(NFS_SERVER(inode
), err
,
3854 } while (exception
.retry
);
3859 * TODO: For the time being, we don't try to get any attributes
3860 * along with any of the zero-copy operations READ, READDIR,
3863 * In the case of the first three, we want to put the GETATTR
3864 * after the read-type operation -- this is because it is hard
3865 * to predict the length of a GETATTR response in v4, and thus
3866 * align the READ data correctly. This means that the GETATTR
3867 * may end up partially falling into the page cache, and we should
3868 * shift it into the 'tail' of the xdr_buf before processing.
3869 * To do this efficiently, we need to know the total length
3870 * of data received, which doesn't seem to be available outside
3873 * In the case of WRITE, we also want to put the GETATTR after
3874 * the operation -- in this case because we want to make sure
3875 * we get the post-operation mtime and size.
3877 * Both of these changes to the XDR layer would in fact be quite
3878 * minor, but I decided to leave them for a subsequent patch.
3880 static int _nfs4_proc_readlink(struct inode
*inode
, struct page
*page
,
3881 unsigned int pgbase
, unsigned int pglen
)
3883 struct nfs4_readlink args
= {
3884 .fh
= NFS_FH(inode
),
3889 struct nfs4_readlink_res res
;
3890 struct rpc_message msg
= {
3891 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_READLINK
],
3896 return nfs4_call_sync(NFS_SERVER(inode
)->client
, NFS_SERVER(inode
), &msg
, &args
.seq_args
, &res
.seq_res
, 0);
3899 static int nfs4_proc_readlink(struct inode
*inode
, struct page
*page
,
3900 unsigned int pgbase
, unsigned int pglen
)
3902 struct nfs4_exception exception
= { };
3905 err
= _nfs4_proc_readlink(inode
, page
, pgbase
, pglen
);
3906 trace_nfs4_readlink(inode
, err
);
3907 err
= nfs4_handle_exception(NFS_SERVER(inode
), err
,
3909 } while (exception
.retry
);
3914 * This is just for mknod. open(O_CREAT) will always do ->open_context().
3917 nfs4_proc_create(struct inode
*dir
, struct dentry
*dentry
, struct iattr
*sattr
,
3920 struct nfs_server
*server
= NFS_SERVER(dir
);
3921 struct nfs4_label l
, *ilabel
= NULL
;
3922 struct nfs_open_context
*ctx
;
3923 struct nfs4_state
*state
;
3926 ctx
= alloc_nfs_open_context(dentry
, FMODE_READ
, NULL
);
3928 return PTR_ERR(ctx
);
3930 ilabel
= nfs4_label_init_security(dir
, dentry
, sattr
, &l
);
3932 if (!(server
->attr_bitmask
[2] & FATTR4_WORD2_MODE_UMASK
))
3933 sattr
->ia_mode
&= ~current_umask();
3934 state
= nfs4_do_open(dir
, ctx
, flags
, sattr
, ilabel
, NULL
);
3935 if (IS_ERR(state
)) {
3936 status
= PTR_ERR(state
);
3940 nfs4_label_release_security(ilabel
);
3941 put_nfs_open_context(ctx
);
3945 static int _nfs4_proc_remove(struct inode
*dir
, const struct qstr
*name
)
3947 struct nfs_server
*server
= NFS_SERVER(dir
);
3948 struct nfs_removeargs args
= {
3952 struct nfs_removeres res
= {
3955 struct rpc_message msg
= {
3956 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_REMOVE
],
3960 unsigned long timestamp
= jiffies
;
3963 status
= nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 1);
3965 update_changeattr(dir
, &res
.cinfo
, timestamp
);
3969 static int nfs4_proc_remove(struct inode
*dir
, const struct qstr
*name
)
3971 struct nfs4_exception exception
= { };
3974 err
= _nfs4_proc_remove(dir
, name
);
3975 trace_nfs4_remove(dir
, name
, err
);
3976 err
= nfs4_handle_exception(NFS_SERVER(dir
), err
,
3978 } while (exception
.retry
);
3982 static void nfs4_proc_unlink_setup(struct rpc_message
*msg
, struct inode
*dir
)
3984 struct nfs_server
*server
= NFS_SERVER(dir
);
3985 struct nfs_removeargs
*args
= msg
->rpc_argp
;
3986 struct nfs_removeres
*res
= msg
->rpc_resp
;
3988 res
->server
= server
;
3989 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_REMOVE
];
3990 nfs4_init_sequence(&args
->seq_args
, &res
->seq_res
, 1);
3992 nfs_fattr_init(res
->dir_attr
);
3995 static void nfs4_proc_unlink_rpc_prepare(struct rpc_task
*task
, struct nfs_unlinkdata
*data
)
3997 nfs4_setup_sequence(NFS_SB(data
->dentry
->d_sb
)->nfs_client
,
3998 &data
->args
.seq_args
,
4003 static int nfs4_proc_unlink_done(struct rpc_task
*task
, struct inode
*dir
)
4005 struct nfs_unlinkdata
*data
= task
->tk_calldata
;
4006 struct nfs_removeres
*res
= &data
->res
;
4008 if (!nfs4_sequence_done(task
, &res
->seq_res
))
4010 if (nfs4_async_handle_error(task
, res
->server
, NULL
,
4011 &data
->timeout
) == -EAGAIN
)
4013 if (task
->tk_status
== 0)
4014 update_changeattr(dir
, &res
->cinfo
, res
->dir_attr
->time_start
);
4018 static void nfs4_proc_rename_setup(struct rpc_message
*msg
, struct inode
*dir
)
4020 struct nfs_server
*server
= NFS_SERVER(dir
);
4021 struct nfs_renameargs
*arg
= msg
->rpc_argp
;
4022 struct nfs_renameres
*res
= msg
->rpc_resp
;
4024 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RENAME
];
4025 res
->server
= server
;
4026 nfs4_init_sequence(&arg
->seq_args
, &res
->seq_res
, 1);
4029 static void nfs4_proc_rename_rpc_prepare(struct rpc_task
*task
, struct nfs_renamedata
*data
)
4031 nfs4_setup_sequence(NFS_SERVER(data
->old_dir
)->nfs_client
,
4032 &data
->args
.seq_args
,
4037 static int nfs4_proc_rename_done(struct rpc_task
*task
, struct inode
*old_dir
,
4038 struct inode
*new_dir
)
4040 struct nfs_renamedata
*data
= task
->tk_calldata
;
4041 struct nfs_renameres
*res
= &data
->res
;
4043 if (!nfs4_sequence_done(task
, &res
->seq_res
))
4045 if (nfs4_async_handle_error(task
, res
->server
, NULL
, &data
->timeout
) == -EAGAIN
)
4048 if (task
->tk_status
== 0) {
4049 update_changeattr(old_dir
, &res
->old_cinfo
, res
->old_fattr
->time_start
);
4050 if (new_dir
!= old_dir
)
4051 update_changeattr(new_dir
, &res
->new_cinfo
, res
->new_fattr
->time_start
);
4056 static int _nfs4_proc_link(struct inode
*inode
, struct inode
*dir
, const struct qstr
*name
)
4058 struct nfs_server
*server
= NFS_SERVER(inode
);
4059 struct nfs4_link_arg arg
= {
4060 .fh
= NFS_FH(inode
),
4061 .dir_fh
= NFS_FH(dir
),
4063 .bitmask
= server
->attr_bitmask
,
4065 struct nfs4_link_res res
= {
4069 struct rpc_message msg
= {
4070 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LINK
],
4074 int status
= -ENOMEM
;
4076 res
.fattr
= nfs_alloc_fattr();
4077 if (res
.fattr
== NULL
)
4080 res
.label
= nfs4_label_alloc(server
, GFP_KERNEL
);
4081 if (IS_ERR(res
.label
)) {
4082 status
= PTR_ERR(res
.label
);
4085 arg
.bitmask
= nfs4_bitmask(server
, res
.label
);
4087 status
= nfs4_call_sync(server
->client
, server
, &msg
, &arg
.seq_args
, &res
.seq_res
, 1);
4089 update_changeattr(dir
, &res
.cinfo
, res
.fattr
->time_start
);
4090 status
= nfs_post_op_update_inode(inode
, res
.fattr
);
4092 nfs_setsecurity(inode
, res
.fattr
, res
.label
);
4096 nfs4_label_free(res
.label
);
4099 nfs_free_fattr(res
.fattr
);
4103 static int nfs4_proc_link(struct inode
*inode
, struct inode
*dir
, const struct qstr
*name
)
4105 struct nfs4_exception exception
= { };
4108 err
= nfs4_handle_exception(NFS_SERVER(inode
),
4109 _nfs4_proc_link(inode
, dir
, name
),
4111 } while (exception
.retry
);
4115 struct nfs4_createdata
{
4116 struct rpc_message msg
;
4117 struct nfs4_create_arg arg
;
4118 struct nfs4_create_res res
;
4120 struct nfs_fattr fattr
;
4121 struct nfs4_label
*label
;
4124 static struct nfs4_createdata
*nfs4_alloc_createdata(struct inode
*dir
,
4125 const struct qstr
*name
, struct iattr
*sattr
, u32 ftype
)
4127 struct nfs4_createdata
*data
;
4129 data
= kzalloc(sizeof(*data
), GFP_KERNEL
);
4131 struct nfs_server
*server
= NFS_SERVER(dir
);
4133 data
->label
= nfs4_label_alloc(server
, GFP_KERNEL
);
4134 if (IS_ERR(data
->label
))
4137 data
->msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_CREATE
];
4138 data
->msg
.rpc_argp
= &data
->arg
;
4139 data
->msg
.rpc_resp
= &data
->res
;
4140 data
->arg
.dir_fh
= NFS_FH(dir
);
4141 data
->arg
.server
= server
;
4142 data
->arg
.name
= name
;
4143 data
->arg
.attrs
= sattr
;
4144 data
->arg
.ftype
= ftype
;
4145 data
->arg
.bitmask
= nfs4_bitmask(server
, data
->label
);
4146 data
->arg
.umask
= current_umask();
4147 data
->res
.server
= server
;
4148 data
->res
.fh
= &data
->fh
;
4149 data
->res
.fattr
= &data
->fattr
;
4150 data
->res
.label
= data
->label
;
4151 nfs_fattr_init(data
->res
.fattr
);
4159 static int nfs4_do_create(struct inode
*dir
, struct dentry
*dentry
, struct nfs4_createdata
*data
)
4161 int status
= nfs4_call_sync(NFS_SERVER(dir
)->client
, NFS_SERVER(dir
), &data
->msg
,
4162 &data
->arg
.seq_args
, &data
->res
.seq_res
, 1);
4164 update_changeattr(dir
, &data
->res
.dir_cinfo
,
4165 data
->res
.fattr
->time_start
);
4166 status
= nfs_instantiate(dentry
, data
->res
.fh
, data
->res
.fattr
, data
->res
.label
);
4171 static void nfs4_free_createdata(struct nfs4_createdata
*data
)
4173 nfs4_label_free(data
->label
);
4177 static int _nfs4_proc_symlink(struct inode
*dir
, struct dentry
*dentry
,
4178 struct page
*page
, unsigned int len
, struct iattr
*sattr
,
4179 struct nfs4_label
*label
)
4181 struct nfs4_createdata
*data
;
4182 int status
= -ENAMETOOLONG
;
4184 if (len
> NFS4_MAXPATHLEN
)
4188 data
= nfs4_alloc_createdata(dir
, &dentry
->d_name
, sattr
, NF4LNK
);
4192 data
->msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SYMLINK
];
4193 data
->arg
.u
.symlink
.pages
= &page
;
4194 data
->arg
.u
.symlink
.len
= len
;
4195 data
->arg
.label
= label
;
4197 status
= nfs4_do_create(dir
, dentry
, data
);
4199 nfs4_free_createdata(data
);
4204 static int nfs4_proc_symlink(struct inode
*dir
, struct dentry
*dentry
,
4205 struct page
*page
, unsigned int len
, struct iattr
*sattr
)
4207 struct nfs4_exception exception
= { };
4208 struct nfs4_label l
, *label
= NULL
;
4211 label
= nfs4_label_init_security(dir
, dentry
, sattr
, &l
);
4214 err
= _nfs4_proc_symlink(dir
, dentry
, page
, len
, sattr
, label
);
4215 trace_nfs4_symlink(dir
, &dentry
->d_name
, err
);
4216 err
= nfs4_handle_exception(NFS_SERVER(dir
), err
,
4218 } while (exception
.retry
);
4220 nfs4_label_release_security(label
);
4224 static int _nfs4_proc_mkdir(struct inode
*dir
, struct dentry
*dentry
,
4225 struct iattr
*sattr
, struct nfs4_label
*label
)
4227 struct nfs4_createdata
*data
;
4228 int status
= -ENOMEM
;
4230 data
= nfs4_alloc_createdata(dir
, &dentry
->d_name
, sattr
, NF4DIR
);
4234 data
->arg
.label
= label
;
4235 status
= nfs4_do_create(dir
, dentry
, data
);
4237 nfs4_free_createdata(data
);
4242 static int nfs4_proc_mkdir(struct inode
*dir
, struct dentry
*dentry
,
4243 struct iattr
*sattr
)
4245 struct nfs_server
*server
= NFS_SERVER(dir
);
4246 struct nfs4_exception exception
= { };
4247 struct nfs4_label l
, *label
= NULL
;
4250 label
= nfs4_label_init_security(dir
, dentry
, sattr
, &l
);
4252 if (!(server
->attr_bitmask
[2] & FATTR4_WORD2_MODE_UMASK
))
4253 sattr
->ia_mode
&= ~current_umask();
4255 err
= _nfs4_proc_mkdir(dir
, dentry
, sattr
, label
);
4256 trace_nfs4_mkdir(dir
, &dentry
->d_name
, err
);
4257 err
= nfs4_handle_exception(NFS_SERVER(dir
), err
,
4259 } while (exception
.retry
);
4260 nfs4_label_release_security(label
);
4265 static int _nfs4_proc_readdir(struct dentry
*dentry
, struct rpc_cred
*cred
,
4266 u64 cookie
, struct page
**pages
, unsigned int count
, int plus
)
4268 struct inode
*dir
= d_inode(dentry
);
4269 struct nfs4_readdir_arg args
= {
4274 .bitmask
= NFS_SERVER(d_inode(dentry
))->attr_bitmask
,
4277 struct nfs4_readdir_res res
;
4278 struct rpc_message msg
= {
4279 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_READDIR
],
4286 dprintk("%s: dentry = %pd2, cookie = %Lu\n", __func__
,
4288 (unsigned long long)cookie
);
4289 nfs4_setup_readdir(cookie
, NFS_I(dir
)->cookieverf
, dentry
, &args
);
4290 res
.pgbase
= args
.pgbase
;
4291 status
= nfs4_call_sync(NFS_SERVER(dir
)->client
, NFS_SERVER(dir
), &msg
, &args
.seq_args
, &res
.seq_res
, 0);
4293 memcpy(NFS_I(dir
)->cookieverf
, res
.verifier
.data
, NFS4_VERIFIER_SIZE
);
4294 status
+= args
.pgbase
;
4297 nfs_invalidate_atime(dir
);
4299 dprintk("%s: returns %d\n", __func__
, status
);
4303 static int nfs4_proc_readdir(struct dentry
*dentry
, struct rpc_cred
*cred
,
4304 u64 cookie
, struct page
**pages
, unsigned int count
, int plus
)
4306 struct nfs4_exception exception
= { };
4309 err
= _nfs4_proc_readdir(dentry
, cred
, cookie
,
4310 pages
, count
, plus
);
4311 trace_nfs4_readdir(d_inode(dentry
), err
);
4312 err
= nfs4_handle_exception(NFS_SERVER(d_inode(dentry
)), err
,
4314 } while (exception
.retry
);
4318 static int _nfs4_proc_mknod(struct inode
*dir
, struct dentry
*dentry
,
4319 struct iattr
*sattr
, struct nfs4_label
*label
, dev_t rdev
)
4321 struct nfs4_createdata
*data
;
4322 int mode
= sattr
->ia_mode
;
4323 int status
= -ENOMEM
;
4325 data
= nfs4_alloc_createdata(dir
, &dentry
->d_name
, sattr
, NF4SOCK
);
4330 data
->arg
.ftype
= NF4FIFO
;
4331 else if (S_ISBLK(mode
)) {
4332 data
->arg
.ftype
= NF4BLK
;
4333 data
->arg
.u
.device
.specdata1
= MAJOR(rdev
);
4334 data
->arg
.u
.device
.specdata2
= MINOR(rdev
);
4336 else if (S_ISCHR(mode
)) {
4337 data
->arg
.ftype
= NF4CHR
;
4338 data
->arg
.u
.device
.specdata1
= MAJOR(rdev
);
4339 data
->arg
.u
.device
.specdata2
= MINOR(rdev
);
4340 } else if (!S_ISSOCK(mode
)) {
4345 data
->arg
.label
= label
;
4346 status
= nfs4_do_create(dir
, dentry
, data
);
4348 nfs4_free_createdata(data
);
4353 static int nfs4_proc_mknod(struct inode
*dir
, struct dentry
*dentry
,
4354 struct iattr
*sattr
, dev_t rdev
)
4356 struct nfs_server
*server
= NFS_SERVER(dir
);
4357 struct nfs4_exception exception
= { };
4358 struct nfs4_label l
, *label
= NULL
;
4361 label
= nfs4_label_init_security(dir
, dentry
, sattr
, &l
);
4363 if (!(server
->attr_bitmask
[2] & FATTR4_WORD2_MODE_UMASK
))
4364 sattr
->ia_mode
&= ~current_umask();
4366 err
= _nfs4_proc_mknod(dir
, dentry
, sattr
, label
, rdev
);
4367 trace_nfs4_mknod(dir
, &dentry
->d_name
, err
);
4368 err
= nfs4_handle_exception(NFS_SERVER(dir
), err
,
4370 } while (exception
.retry
);
4372 nfs4_label_release_security(label
);
4377 static int _nfs4_proc_statfs(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
4378 struct nfs_fsstat
*fsstat
)
4380 struct nfs4_statfs_arg args
= {
4382 .bitmask
= server
->attr_bitmask
,
4384 struct nfs4_statfs_res res
= {
4387 struct rpc_message msg
= {
4388 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_STATFS
],
4393 nfs_fattr_init(fsstat
->fattr
);
4394 return nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
4397 static int nfs4_proc_statfs(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fsstat
*fsstat
)
4399 struct nfs4_exception exception
= { };
4402 err
= nfs4_handle_exception(server
,
4403 _nfs4_proc_statfs(server
, fhandle
, fsstat
),
4405 } while (exception
.retry
);
4409 static int _nfs4_do_fsinfo(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
4410 struct nfs_fsinfo
*fsinfo
)
4412 struct nfs4_fsinfo_arg args
= {
4414 .bitmask
= server
->attr_bitmask
,
4416 struct nfs4_fsinfo_res res
= {
4419 struct rpc_message msg
= {
4420 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_FSINFO
],
4425 return nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
4428 static int nfs4_do_fsinfo(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fsinfo
*fsinfo
)
4430 struct nfs4_exception exception
= { };
4431 unsigned long now
= jiffies
;
4435 err
= _nfs4_do_fsinfo(server
, fhandle
, fsinfo
);
4436 trace_nfs4_fsinfo(server
, fhandle
, fsinfo
->fattr
, err
);
4438 nfs4_set_lease_period(server
->nfs_client
,
4439 fsinfo
->lease_time
* HZ
,
4443 err
= nfs4_handle_exception(server
, err
, &exception
);
4444 } while (exception
.retry
);
4448 static int nfs4_proc_fsinfo(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fsinfo
*fsinfo
)
4452 nfs_fattr_init(fsinfo
->fattr
);
4453 error
= nfs4_do_fsinfo(server
, fhandle
, fsinfo
);
4455 /* block layout checks this! */
4456 server
->pnfs_blksize
= fsinfo
->blksize
;
4457 set_pnfs_layoutdriver(server
, fhandle
, fsinfo
);
4463 static int _nfs4_proc_pathconf(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
4464 struct nfs_pathconf
*pathconf
)
4466 struct nfs4_pathconf_arg args
= {
4468 .bitmask
= server
->attr_bitmask
,
4470 struct nfs4_pathconf_res res
= {
4471 .pathconf
= pathconf
,
4473 struct rpc_message msg
= {
4474 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_PATHCONF
],
4479 /* None of the pathconf attributes are mandatory to implement */
4480 if ((args
.bitmask
[0] & nfs4_pathconf_bitmap
[0]) == 0) {
4481 memset(pathconf
, 0, sizeof(*pathconf
));
4485 nfs_fattr_init(pathconf
->fattr
);
4486 return nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
4489 static int nfs4_proc_pathconf(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
4490 struct nfs_pathconf
*pathconf
)
4492 struct nfs4_exception exception
= { };
4496 err
= nfs4_handle_exception(server
,
4497 _nfs4_proc_pathconf(server
, fhandle
, pathconf
),
4499 } while (exception
.retry
);
4503 int nfs4_set_rw_stateid(nfs4_stateid
*stateid
,
4504 const struct nfs_open_context
*ctx
,
4505 const struct nfs_lock_context
*l_ctx
,
4508 return nfs4_select_rw_stateid(ctx
->state
, fmode
, l_ctx
, stateid
, NULL
);
4510 EXPORT_SYMBOL_GPL(nfs4_set_rw_stateid
);
4512 static bool nfs4_stateid_is_current(nfs4_stateid
*stateid
,
4513 const struct nfs_open_context
*ctx
,
4514 const struct nfs_lock_context
*l_ctx
,
4517 nfs4_stateid current_stateid
;
4519 /* If the current stateid represents a lost lock, then exit */
4520 if (nfs4_set_rw_stateid(¤t_stateid
, ctx
, l_ctx
, fmode
) == -EIO
)
4522 return nfs4_stateid_match(stateid
, ¤t_stateid
);
4525 static bool nfs4_error_stateid_expired(int err
)
4528 case -NFS4ERR_DELEG_REVOKED
:
4529 case -NFS4ERR_ADMIN_REVOKED
:
4530 case -NFS4ERR_BAD_STATEID
:
4531 case -NFS4ERR_STALE_STATEID
:
4532 case -NFS4ERR_OLD_STATEID
:
4533 case -NFS4ERR_OPENMODE
:
4534 case -NFS4ERR_EXPIRED
:
4540 static int nfs4_read_done_cb(struct rpc_task
*task
, struct nfs_pgio_header
*hdr
)
4542 struct nfs_server
*server
= NFS_SERVER(hdr
->inode
);
4544 trace_nfs4_read(hdr
, task
->tk_status
);
4545 if (task
->tk_status
< 0) {
4546 struct nfs4_exception exception
= {
4547 .inode
= hdr
->inode
,
4548 .state
= hdr
->args
.context
->state
,
4549 .stateid
= &hdr
->args
.stateid
,
4551 task
->tk_status
= nfs4_async_handle_exception(task
,
4552 server
, task
->tk_status
, &exception
);
4553 if (exception
.retry
) {
4554 rpc_restart_call_prepare(task
);
4559 if (task
->tk_status
> 0)
4560 renew_lease(server
, hdr
->timestamp
);
4564 static bool nfs4_read_stateid_changed(struct rpc_task
*task
,
4565 struct nfs_pgio_args
*args
)
4568 if (!nfs4_error_stateid_expired(task
->tk_status
) ||
4569 nfs4_stateid_is_current(&args
->stateid
,
4574 rpc_restart_call_prepare(task
);
4578 static int nfs4_read_done(struct rpc_task
*task
, struct nfs_pgio_header
*hdr
)
4581 dprintk("--> %s\n", __func__
);
4583 if (!nfs4_sequence_done(task
, &hdr
->res
.seq_res
))
4585 if (nfs4_read_stateid_changed(task
, &hdr
->args
))
4587 if (task
->tk_status
> 0)
4588 nfs_invalidate_atime(hdr
->inode
);
4589 return hdr
->pgio_done_cb
? hdr
->pgio_done_cb(task
, hdr
) :
4590 nfs4_read_done_cb(task
, hdr
);
4593 static void nfs4_proc_read_setup(struct nfs_pgio_header
*hdr
,
4594 struct rpc_message
*msg
)
4596 hdr
->timestamp
= jiffies
;
4597 if (!hdr
->pgio_done_cb
)
4598 hdr
->pgio_done_cb
= nfs4_read_done_cb
;
4599 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_READ
];
4600 nfs4_init_sequence(&hdr
->args
.seq_args
, &hdr
->res
.seq_res
, 0);
4603 static int nfs4_proc_pgio_rpc_prepare(struct rpc_task
*task
,
4604 struct nfs_pgio_header
*hdr
)
4606 if (nfs4_setup_sequence(NFS_SERVER(hdr
->inode
)->nfs_client
,
4607 &hdr
->args
.seq_args
,
4611 if (nfs4_set_rw_stateid(&hdr
->args
.stateid
, hdr
->args
.context
,
4612 hdr
->args
.lock_context
,
4613 hdr
->rw_ops
->rw_mode
) == -EIO
)
4615 if (unlikely(test_bit(NFS_CONTEXT_BAD
, &hdr
->args
.context
->flags
)))
4620 static int nfs4_write_done_cb(struct rpc_task
*task
,
4621 struct nfs_pgio_header
*hdr
)
4623 struct inode
*inode
= hdr
->inode
;
4625 trace_nfs4_write(hdr
, task
->tk_status
);
4626 if (task
->tk_status
< 0) {
4627 struct nfs4_exception exception
= {
4628 .inode
= hdr
->inode
,
4629 .state
= hdr
->args
.context
->state
,
4630 .stateid
= &hdr
->args
.stateid
,
4632 task
->tk_status
= nfs4_async_handle_exception(task
,
4633 NFS_SERVER(inode
), task
->tk_status
,
4635 if (exception
.retry
) {
4636 rpc_restart_call_prepare(task
);
4640 if (task
->tk_status
>= 0) {
4641 renew_lease(NFS_SERVER(inode
), hdr
->timestamp
);
4642 nfs_writeback_update_inode(hdr
);
4647 static bool nfs4_write_stateid_changed(struct rpc_task
*task
,
4648 struct nfs_pgio_args
*args
)
4651 if (!nfs4_error_stateid_expired(task
->tk_status
) ||
4652 nfs4_stateid_is_current(&args
->stateid
,
4657 rpc_restart_call_prepare(task
);
4661 static int nfs4_write_done(struct rpc_task
*task
, struct nfs_pgio_header
*hdr
)
4663 if (!nfs4_sequence_done(task
, &hdr
->res
.seq_res
))
4665 if (nfs4_write_stateid_changed(task
, &hdr
->args
))
4667 return hdr
->pgio_done_cb
? hdr
->pgio_done_cb(task
, hdr
) :
4668 nfs4_write_done_cb(task
, hdr
);
4672 bool nfs4_write_need_cache_consistency_data(struct nfs_pgio_header
*hdr
)
4674 /* Don't request attributes for pNFS or O_DIRECT writes */
4675 if (hdr
->ds_clp
!= NULL
|| hdr
->dreq
!= NULL
)
4677 /* Otherwise, request attributes if and only if we don't hold
4680 return nfs4_have_delegation(hdr
->inode
, FMODE_READ
) == 0;
4683 static void nfs4_proc_write_setup(struct nfs_pgio_header
*hdr
,
4684 struct rpc_message
*msg
)
4686 struct nfs_server
*server
= NFS_SERVER(hdr
->inode
);
4688 if (!nfs4_write_need_cache_consistency_data(hdr
)) {
4689 hdr
->args
.bitmask
= NULL
;
4690 hdr
->res
.fattr
= NULL
;
4692 hdr
->args
.bitmask
= server
->cache_consistency_bitmask
;
4694 if (!hdr
->pgio_done_cb
)
4695 hdr
->pgio_done_cb
= nfs4_write_done_cb
;
4696 hdr
->res
.server
= server
;
4697 hdr
->timestamp
= jiffies
;
4699 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_WRITE
];
4700 nfs4_init_sequence(&hdr
->args
.seq_args
, &hdr
->res
.seq_res
, 1);
4703 static void nfs4_proc_commit_rpc_prepare(struct rpc_task
*task
, struct nfs_commit_data
*data
)
4705 nfs4_setup_sequence(NFS_SERVER(data
->inode
)->nfs_client
,
4706 &data
->args
.seq_args
,
4711 static int nfs4_commit_done_cb(struct rpc_task
*task
, struct nfs_commit_data
*data
)
4713 struct inode
*inode
= data
->inode
;
4715 trace_nfs4_commit(data
, task
->tk_status
);
4716 if (nfs4_async_handle_error(task
, NFS_SERVER(inode
),
4717 NULL
, NULL
) == -EAGAIN
) {
4718 rpc_restart_call_prepare(task
);
4724 static int nfs4_commit_done(struct rpc_task
*task
, struct nfs_commit_data
*data
)
4726 if (!nfs4_sequence_done(task
, &data
->res
.seq_res
))
4728 return data
->commit_done_cb(task
, data
);
4731 static void nfs4_proc_commit_setup(struct nfs_commit_data
*data
, struct rpc_message
*msg
)
4733 struct nfs_server
*server
= NFS_SERVER(data
->inode
);
4735 if (data
->commit_done_cb
== NULL
)
4736 data
->commit_done_cb
= nfs4_commit_done_cb
;
4737 data
->res
.server
= server
;
4738 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_COMMIT
];
4739 nfs4_init_sequence(&data
->args
.seq_args
, &data
->res
.seq_res
, 1);
4742 struct nfs4_renewdata
{
4743 struct nfs_client
*client
;
4744 unsigned long timestamp
;
4748 * nfs4_proc_async_renew(): This is not one of the nfs_rpc_ops; it is a special
4749 * standalone procedure for queueing an asynchronous RENEW.
4751 static void nfs4_renew_release(void *calldata
)
4753 struct nfs4_renewdata
*data
= calldata
;
4754 struct nfs_client
*clp
= data
->client
;
4756 if (atomic_read(&clp
->cl_count
) > 1)
4757 nfs4_schedule_state_renewal(clp
);
4758 nfs_put_client(clp
);
4762 static void nfs4_renew_done(struct rpc_task
*task
, void *calldata
)
4764 struct nfs4_renewdata
*data
= calldata
;
4765 struct nfs_client
*clp
= data
->client
;
4766 unsigned long timestamp
= data
->timestamp
;
4768 trace_nfs4_renew_async(clp
, task
->tk_status
);
4769 switch (task
->tk_status
) {
4772 case -NFS4ERR_LEASE_MOVED
:
4773 nfs4_schedule_lease_moved_recovery(clp
);
4776 /* Unless we're shutting down, schedule state recovery! */
4777 if (test_bit(NFS_CS_RENEWD
, &clp
->cl_res_state
) == 0)
4779 if (task
->tk_status
!= NFS4ERR_CB_PATH_DOWN
) {
4780 nfs4_schedule_lease_recovery(clp
);
4783 nfs4_schedule_path_down_recovery(clp
);
4785 do_renew_lease(clp
, timestamp
);
4788 static const struct rpc_call_ops nfs4_renew_ops
= {
4789 .rpc_call_done
= nfs4_renew_done
,
4790 .rpc_release
= nfs4_renew_release
,
4793 static int nfs4_proc_async_renew(struct nfs_client
*clp
, struct rpc_cred
*cred
, unsigned renew_flags
)
4795 struct rpc_message msg
= {
4796 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RENEW
],
4800 struct nfs4_renewdata
*data
;
4802 if (renew_flags
== 0)
4804 if (!atomic_inc_not_zero(&clp
->cl_count
))
4806 data
= kmalloc(sizeof(*data
), GFP_NOFS
);
4810 data
->timestamp
= jiffies
;
4811 return rpc_call_async(clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
,
4812 &nfs4_renew_ops
, data
);
4815 static int nfs4_proc_renew(struct nfs_client
*clp
, struct rpc_cred
*cred
)
4817 struct rpc_message msg
= {
4818 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RENEW
],
4822 unsigned long now
= jiffies
;
4825 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
4828 do_renew_lease(clp
, now
);
4832 static inline int nfs4_server_supports_acls(struct nfs_server
*server
)
4834 return server
->caps
& NFS_CAP_ACLS
;
4837 /* Assuming that XATTR_SIZE_MAX is a multiple of PAGE_SIZE, and that
4838 * it's OK to put sizeof(void) * (XATTR_SIZE_MAX/PAGE_SIZE) bytes on
4841 #define NFS4ACL_MAXPAGES DIV_ROUND_UP(XATTR_SIZE_MAX, PAGE_SIZE)
4843 static int buf_to_pages_noslab(const void *buf
, size_t buflen
,
4844 struct page
**pages
)
4846 struct page
*newpage
, **spages
;
4852 len
= min_t(size_t, PAGE_SIZE
, buflen
);
4853 newpage
= alloc_page(GFP_KERNEL
);
4855 if (newpage
== NULL
)
4857 memcpy(page_address(newpage
), buf
, len
);
4862 } while (buflen
!= 0);
4868 __free_page(spages
[rc
-1]);
4872 struct nfs4_cached_acl
{
4878 static void nfs4_set_cached_acl(struct inode
*inode
, struct nfs4_cached_acl
*acl
)
4880 struct nfs_inode
*nfsi
= NFS_I(inode
);
4882 spin_lock(&inode
->i_lock
);
4883 kfree(nfsi
->nfs4_acl
);
4884 nfsi
->nfs4_acl
= acl
;
4885 spin_unlock(&inode
->i_lock
);
4888 static void nfs4_zap_acl_attr(struct inode
*inode
)
4890 nfs4_set_cached_acl(inode
, NULL
);
4893 static inline ssize_t
nfs4_read_cached_acl(struct inode
*inode
, char *buf
, size_t buflen
)
4895 struct nfs_inode
*nfsi
= NFS_I(inode
);
4896 struct nfs4_cached_acl
*acl
;
4899 spin_lock(&inode
->i_lock
);
4900 acl
= nfsi
->nfs4_acl
;
4903 if (buf
== NULL
) /* user is just asking for length */
4905 if (acl
->cached
== 0)
4907 ret
= -ERANGE
; /* see getxattr(2) man page */
4908 if (acl
->len
> buflen
)
4910 memcpy(buf
, acl
->data
, acl
->len
);
4914 spin_unlock(&inode
->i_lock
);
4918 static void nfs4_write_cached_acl(struct inode
*inode
, struct page
**pages
, size_t pgbase
, size_t acl_len
)
4920 struct nfs4_cached_acl
*acl
;
4921 size_t buflen
= sizeof(*acl
) + acl_len
;
4923 if (buflen
<= PAGE_SIZE
) {
4924 acl
= kmalloc(buflen
, GFP_KERNEL
);
4928 _copy_from_pages(acl
->data
, pages
, pgbase
, acl_len
);
4930 acl
= kmalloc(sizeof(*acl
), GFP_KERNEL
);
4937 nfs4_set_cached_acl(inode
, acl
);
4941 * The getxattr API returns the required buffer length when called with a
4942 * NULL buf. The NFSv4 acl tool then calls getxattr again after allocating
4943 * the required buf. On a NULL buf, we send a page of data to the server
4944 * guessing that the ACL request can be serviced by a page. If so, we cache
4945 * up to the page of ACL data, and the 2nd call to getxattr is serviced by
4946 * the cache. If not so, we throw away the page, and cache the required
4947 * length. The next getxattr call will then produce another round trip to
4948 * the server, this time with the input buf of the required size.
4950 static ssize_t
__nfs4_get_acl_uncached(struct inode
*inode
, void *buf
, size_t buflen
)
4952 struct page
*pages
[NFS4ACL_MAXPAGES
+ 1] = {NULL
, };
4953 struct nfs_getaclargs args
= {
4954 .fh
= NFS_FH(inode
),
4958 struct nfs_getaclres res
= {
4961 struct rpc_message msg
= {
4962 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GETACL
],
4966 unsigned int npages
= DIV_ROUND_UP(buflen
, PAGE_SIZE
) + 1;
4967 int ret
= -ENOMEM
, i
;
4969 if (npages
> ARRAY_SIZE(pages
))
4972 for (i
= 0; i
< npages
; i
++) {
4973 pages
[i
] = alloc_page(GFP_KERNEL
);
4978 /* for decoding across pages */
4979 res
.acl_scratch
= alloc_page(GFP_KERNEL
);
4980 if (!res
.acl_scratch
)
4983 args
.acl_len
= npages
* PAGE_SIZE
;
4985 dprintk("%s buf %p buflen %zu npages %d args.acl_len %zu\n",
4986 __func__
, buf
, buflen
, npages
, args
.acl_len
);
4987 ret
= nfs4_call_sync(NFS_SERVER(inode
)->client
, NFS_SERVER(inode
),
4988 &msg
, &args
.seq_args
, &res
.seq_res
, 0);
4992 /* Handle the case where the passed-in buffer is too short */
4993 if (res
.acl_flags
& NFS4_ACL_TRUNC
) {
4994 /* Did the user only issue a request for the acl length? */
5000 nfs4_write_cached_acl(inode
, pages
, res
.acl_data_offset
, res
.acl_len
);
5002 if (res
.acl_len
> buflen
) {
5006 _copy_from_pages(buf
, pages
, res
.acl_data_offset
, res
.acl_len
);
5011 for (i
= 0; i
< npages
; i
++)
5013 __free_page(pages
[i
]);
5014 if (res
.acl_scratch
)
5015 __free_page(res
.acl_scratch
);
5019 static ssize_t
nfs4_get_acl_uncached(struct inode
*inode
, void *buf
, size_t buflen
)
5021 struct nfs4_exception exception
= { };
5024 ret
= __nfs4_get_acl_uncached(inode
, buf
, buflen
);
5025 trace_nfs4_get_acl(inode
, ret
);
5028 ret
= nfs4_handle_exception(NFS_SERVER(inode
), ret
, &exception
);
5029 } while (exception
.retry
);
5033 static ssize_t
nfs4_proc_get_acl(struct inode
*inode
, void *buf
, size_t buflen
)
5035 struct nfs_server
*server
= NFS_SERVER(inode
);
5038 if (!nfs4_server_supports_acls(server
))
5040 ret
= nfs_revalidate_inode(server
, inode
);
5043 if (NFS_I(inode
)->cache_validity
& NFS_INO_INVALID_ACL
)
5044 nfs_zap_acl_cache(inode
);
5045 ret
= nfs4_read_cached_acl(inode
, buf
, buflen
);
5047 /* -ENOENT is returned if there is no ACL or if there is an ACL
5048 * but no cached acl data, just the acl length */
5050 return nfs4_get_acl_uncached(inode
, buf
, buflen
);
5053 static int __nfs4_proc_set_acl(struct inode
*inode
, const void *buf
, size_t buflen
)
5055 struct nfs_server
*server
= NFS_SERVER(inode
);
5056 struct page
*pages
[NFS4ACL_MAXPAGES
];
5057 struct nfs_setaclargs arg
= {
5058 .fh
= NFS_FH(inode
),
5062 struct nfs_setaclres res
;
5063 struct rpc_message msg
= {
5064 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETACL
],
5068 unsigned int npages
= DIV_ROUND_UP(buflen
, PAGE_SIZE
);
5071 if (!nfs4_server_supports_acls(server
))
5073 if (npages
> ARRAY_SIZE(pages
))
5075 i
= buf_to_pages_noslab(buf
, buflen
, arg
.acl_pages
);
5078 nfs4_inode_return_delegation(inode
);
5079 ret
= nfs4_call_sync(server
->client
, server
, &msg
, &arg
.seq_args
, &res
.seq_res
, 1);
5082 * Free each page after tx, so the only ref left is
5083 * held by the network stack
5086 put_page(pages
[i
-1]);
5089 * Acl update can result in inode attribute update.
5090 * so mark the attribute cache invalid.
5092 spin_lock(&inode
->i_lock
);
5093 NFS_I(inode
)->cache_validity
|= NFS_INO_INVALID_ATTR
;
5094 spin_unlock(&inode
->i_lock
);
5095 nfs_access_zap_cache(inode
);
5096 nfs_zap_acl_cache(inode
);
5100 static int nfs4_proc_set_acl(struct inode
*inode
, const void *buf
, size_t buflen
)
5102 struct nfs4_exception exception
= { };
5105 err
= __nfs4_proc_set_acl(inode
, buf
, buflen
);
5106 trace_nfs4_set_acl(inode
, err
);
5107 err
= nfs4_handle_exception(NFS_SERVER(inode
), err
,
5109 } while (exception
.retry
);
5113 #ifdef CONFIG_NFS_V4_SECURITY_LABEL
5114 static int _nfs4_get_security_label(struct inode
*inode
, void *buf
,
5117 struct nfs_server
*server
= NFS_SERVER(inode
);
5118 struct nfs_fattr fattr
;
5119 struct nfs4_label label
= {0, 0, buflen
, buf
};
5121 u32 bitmask
[3] = { 0, 0, FATTR4_WORD2_SECURITY_LABEL
};
5122 struct nfs4_getattr_arg arg
= {
5123 .fh
= NFS_FH(inode
),
5126 struct nfs4_getattr_res res
= {
5131 struct rpc_message msg
= {
5132 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GETATTR
],
5138 nfs_fattr_init(&fattr
);
5140 ret
= nfs4_call_sync(server
->client
, server
, &msg
, &arg
.seq_args
, &res
.seq_res
, 0);
5143 if (!(fattr
.valid
& NFS_ATTR_FATTR_V4_SECURITY_LABEL
))
5145 if (buflen
< label
.len
)
5150 static int nfs4_get_security_label(struct inode
*inode
, void *buf
,
5153 struct nfs4_exception exception
= { };
5156 if (!nfs_server_capable(inode
, NFS_CAP_SECURITY_LABEL
))
5160 err
= _nfs4_get_security_label(inode
, buf
, buflen
);
5161 trace_nfs4_get_security_label(inode
, err
);
5162 err
= nfs4_handle_exception(NFS_SERVER(inode
), err
,
5164 } while (exception
.retry
);
5168 static int _nfs4_do_set_security_label(struct inode
*inode
,
5169 struct nfs4_label
*ilabel
,
5170 struct nfs_fattr
*fattr
,
5171 struct nfs4_label
*olabel
)
5174 struct iattr sattr
= {0};
5175 struct nfs_server
*server
= NFS_SERVER(inode
);
5176 const u32 bitmask
[3] = { 0, 0, FATTR4_WORD2_SECURITY_LABEL
};
5177 struct nfs_setattrargs arg
= {
5178 .fh
= NFS_FH(inode
),
5184 struct nfs_setattrres res
= {
5189 struct rpc_message msg
= {
5190 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETATTR
],
5196 nfs4_stateid_copy(&arg
.stateid
, &zero_stateid
);
5198 status
= nfs4_call_sync(server
->client
, server
, &msg
, &arg
.seq_args
, &res
.seq_res
, 1);
5200 dprintk("%s failed: %d\n", __func__
, status
);
5205 static int nfs4_do_set_security_label(struct inode
*inode
,
5206 struct nfs4_label
*ilabel
,
5207 struct nfs_fattr
*fattr
,
5208 struct nfs4_label
*olabel
)
5210 struct nfs4_exception exception
= { };
5214 err
= _nfs4_do_set_security_label(inode
, ilabel
,
5216 trace_nfs4_set_security_label(inode
, err
);
5217 err
= nfs4_handle_exception(NFS_SERVER(inode
), err
,
5219 } while (exception
.retry
);
5224 nfs4_set_security_label(struct inode
*inode
, const void *buf
, size_t buflen
)
5226 struct nfs4_label ilabel
, *olabel
= NULL
;
5227 struct nfs_fattr fattr
;
5228 struct rpc_cred
*cred
;
5231 if (!nfs_server_capable(inode
, NFS_CAP_SECURITY_LABEL
))
5234 nfs_fattr_init(&fattr
);
5238 ilabel
.label
= (char *)buf
;
5239 ilabel
.len
= buflen
;
5241 cred
= rpc_lookup_cred();
5243 return PTR_ERR(cred
);
5245 olabel
= nfs4_label_alloc(NFS_SERVER(inode
), GFP_KERNEL
);
5246 if (IS_ERR(olabel
)) {
5247 status
= -PTR_ERR(olabel
);
5251 status
= nfs4_do_set_security_label(inode
, &ilabel
, &fattr
, olabel
);
5253 nfs_setsecurity(inode
, &fattr
, olabel
);
5255 nfs4_label_free(olabel
);
5260 #endif /* CONFIG_NFS_V4_SECURITY_LABEL */
5263 static void nfs4_init_boot_verifier(const struct nfs_client
*clp
,
5264 nfs4_verifier
*bootverf
)
5268 if (test_bit(NFS4CLNT_PURGE_STATE
, &clp
->cl_state
)) {
5269 /* An impossible timestamp guarantees this value
5270 * will never match a generated boot time. */
5271 verf
[0] = cpu_to_be32(U32_MAX
);
5272 verf
[1] = cpu_to_be32(U32_MAX
);
5274 struct nfs_net
*nn
= net_generic(clp
->cl_net
, nfs_net_id
);
5275 u64 ns
= ktime_to_ns(nn
->boot_time
);
5277 verf
[0] = cpu_to_be32(ns
>> 32);
5278 verf
[1] = cpu_to_be32(ns
);
5280 memcpy(bootverf
->data
, verf
, sizeof(bootverf
->data
));
5284 nfs4_init_nonuniform_client_string(struct nfs_client
*clp
)
5289 if (clp
->cl_owner_id
!= NULL
)
5293 len
= 14 + strlen(clp
->cl_ipaddr
) + 1 +
5294 strlen(rpc_peeraddr2str(clp
->cl_rpcclient
, RPC_DISPLAY_ADDR
)) +
5296 strlen(rpc_peeraddr2str(clp
->cl_rpcclient
, RPC_DISPLAY_PROTO
)) +
5300 if (len
> NFS4_OPAQUE_LIMIT
+ 1)
5304 * Since this string is allocated at mount time, and held until the
5305 * nfs_client is destroyed, we can use GFP_KERNEL here w/o worrying
5306 * about a memory-reclaim deadlock.
5308 str
= kmalloc(len
, GFP_KERNEL
);
5313 scnprintf(str
, len
, "Linux NFSv4.0 %s/%s %s",
5315 rpc_peeraddr2str(clp
->cl_rpcclient
, RPC_DISPLAY_ADDR
),
5316 rpc_peeraddr2str(clp
->cl_rpcclient
, RPC_DISPLAY_PROTO
));
5319 clp
->cl_owner_id
= str
;
5324 nfs4_init_uniquifier_client_string(struct nfs_client
*clp
)
5329 len
= 10 + 10 + 1 + 10 + 1 +
5330 strlen(nfs4_client_id_uniquifier
) + 1 +
5331 strlen(clp
->cl_rpcclient
->cl_nodename
) + 1;
5333 if (len
> NFS4_OPAQUE_LIMIT
+ 1)
5337 * Since this string is allocated at mount time, and held until the
5338 * nfs_client is destroyed, we can use GFP_KERNEL here w/o worrying
5339 * about a memory-reclaim deadlock.
5341 str
= kmalloc(len
, GFP_KERNEL
);
5345 scnprintf(str
, len
, "Linux NFSv%u.%u %s/%s",
5346 clp
->rpc_ops
->version
, clp
->cl_minorversion
,
5347 nfs4_client_id_uniquifier
,
5348 clp
->cl_rpcclient
->cl_nodename
);
5349 clp
->cl_owner_id
= str
;
5354 nfs4_init_uniform_client_string(struct nfs_client
*clp
)
5359 if (clp
->cl_owner_id
!= NULL
)
5362 if (nfs4_client_id_uniquifier
[0] != '\0')
5363 return nfs4_init_uniquifier_client_string(clp
);
5365 len
= 10 + 10 + 1 + 10 + 1 +
5366 strlen(clp
->cl_rpcclient
->cl_nodename
) + 1;
5368 if (len
> NFS4_OPAQUE_LIMIT
+ 1)
5372 * Since this string is allocated at mount time, and held until the
5373 * nfs_client is destroyed, we can use GFP_KERNEL here w/o worrying
5374 * about a memory-reclaim deadlock.
5376 str
= kmalloc(len
, GFP_KERNEL
);
5380 scnprintf(str
, len
, "Linux NFSv%u.%u %s",
5381 clp
->rpc_ops
->version
, clp
->cl_minorversion
,
5382 clp
->cl_rpcclient
->cl_nodename
);
5383 clp
->cl_owner_id
= str
;
5388 * nfs4_callback_up_net() starts only "tcp" and "tcp6" callback
5389 * services. Advertise one based on the address family of the
5393 nfs4_init_callback_netid(const struct nfs_client
*clp
, char *buf
, size_t len
)
5395 if (strchr(clp
->cl_ipaddr
, ':') != NULL
)
5396 return scnprintf(buf
, len
, "tcp6");
5398 return scnprintf(buf
, len
, "tcp");
5401 static void nfs4_setclientid_done(struct rpc_task
*task
, void *calldata
)
5403 struct nfs4_setclientid
*sc
= calldata
;
5405 if (task
->tk_status
== 0)
5406 sc
->sc_cred
= get_rpccred(task
->tk_rqstp
->rq_cred
);
5409 static const struct rpc_call_ops nfs4_setclientid_ops
= {
5410 .rpc_call_done
= nfs4_setclientid_done
,
5414 * nfs4_proc_setclientid - Negotiate client ID
5415 * @clp: state data structure
5416 * @program: RPC program for NFSv4 callback service
5417 * @port: IP port number for NFS4 callback service
5418 * @cred: RPC credential to use for this call
5419 * @res: where to place the result
5421 * Returns zero, a negative errno, or a negative NFS4ERR status code.
5423 int nfs4_proc_setclientid(struct nfs_client
*clp
, u32 program
,
5424 unsigned short port
, struct rpc_cred
*cred
,
5425 struct nfs4_setclientid_res
*res
)
5427 nfs4_verifier sc_verifier
;
5428 struct nfs4_setclientid setclientid
= {
5429 .sc_verifier
= &sc_verifier
,
5433 struct rpc_message msg
= {
5434 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETCLIENTID
],
5435 .rpc_argp
= &setclientid
,
5439 struct rpc_task
*task
;
5440 struct rpc_task_setup task_setup_data
= {
5441 .rpc_client
= clp
->cl_rpcclient
,
5442 .rpc_message
= &msg
,
5443 .callback_ops
= &nfs4_setclientid_ops
,
5444 .callback_data
= &setclientid
,
5445 .flags
= RPC_TASK_TIMEOUT
,
5449 /* nfs_client_id4 */
5450 nfs4_init_boot_verifier(clp
, &sc_verifier
);
5452 if (test_bit(NFS_CS_MIGRATION
, &clp
->cl_flags
))
5453 status
= nfs4_init_uniform_client_string(clp
);
5455 status
= nfs4_init_nonuniform_client_string(clp
);
5461 setclientid
.sc_netid_len
=
5462 nfs4_init_callback_netid(clp
,
5463 setclientid
.sc_netid
,
5464 sizeof(setclientid
.sc_netid
));
5465 setclientid
.sc_uaddr_len
= scnprintf(setclientid
.sc_uaddr
,
5466 sizeof(setclientid
.sc_uaddr
), "%s.%u.%u",
5467 clp
->cl_ipaddr
, port
>> 8, port
& 255);
5469 dprintk("NFS call setclientid auth=%s, '%s'\n",
5470 clp
->cl_rpcclient
->cl_auth
->au_ops
->au_name
,
5472 task
= rpc_run_task(&task_setup_data
);
5474 status
= PTR_ERR(task
);
5477 status
= task
->tk_status
;
5478 if (setclientid
.sc_cred
) {
5479 clp
->cl_acceptor
= rpcauth_stringify_acceptor(setclientid
.sc_cred
);
5480 put_rpccred(setclientid
.sc_cred
);
5484 trace_nfs4_setclientid(clp
, status
);
5485 dprintk("NFS reply setclientid: %d\n", status
);
5490 * nfs4_proc_setclientid_confirm - Confirm client ID
5491 * @clp: state data structure
5492 * @res: result of a previous SETCLIENTID
5493 * @cred: RPC credential to use for this call
5495 * Returns zero, a negative errno, or a negative NFS4ERR status code.
5497 int nfs4_proc_setclientid_confirm(struct nfs_client
*clp
,
5498 struct nfs4_setclientid_res
*arg
,
5499 struct rpc_cred
*cred
)
5501 struct rpc_message msg
= {
5502 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETCLIENTID_CONFIRM
],
5508 dprintk("NFS call setclientid_confirm auth=%s, (client ID %llx)\n",
5509 clp
->cl_rpcclient
->cl_auth
->au_ops
->au_name
,
5511 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
5512 trace_nfs4_setclientid_confirm(clp
, status
);
5513 dprintk("NFS reply setclientid_confirm: %d\n", status
);
5517 struct nfs4_delegreturndata
{
5518 struct nfs4_delegreturnargs args
;
5519 struct nfs4_delegreturnres res
;
5521 nfs4_stateid stateid
;
5522 unsigned long timestamp
;
5524 struct nfs4_layoutreturn_args arg
;
5525 struct nfs4_layoutreturn_res res
;
5526 struct nfs4_xdr_opaque_data ld_private
;
5530 struct nfs_fattr fattr
;
5532 struct inode
*inode
;
5535 static void nfs4_delegreturn_done(struct rpc_task
*task
, void *calldata
)
5537 struct nfs4_delegreturndata
*data
= calldata
;
5539 if (!nfs4_sequence_done(task
, &data
->res
.seq_res
))
5542 trace_nfs4_delegreturn_exit(&data
->args
, &data
->res
, task
->tk_status
);
5544 /* Handle Layoutreturn errors */
5545 if (data
->args
.lr_args
&& task
->tk_status
!= 0) {
5546 switch(data
->res
.lr_ret
) {
5548 data
->res
.lr_ret
= -NFS4ERR_NOMATCHING_LAYOUT
;
5551 data
->args
.lr_args
= NULL
;
5552 data
->res
.lr_res
= NULL
;
5554 case -NFS4ERR_ADMIN_REVOKED
:
5555 case -NFS4ERR_DELEG_REVOKED
:
5556 case -NFS4ERR_EXPIRED
:
5557 case -NFS4ERR_BAD_STATEID
:
5558 case -NFS4ERR_OLD_STATEID
:
5559 case -NFS4ERR_UNKNOWN_LAYOUTTYPE
:
5560 case -NFS4ERR_WRONG_CRED
:
5561 data
->args
.lr_args
= NULL
;
5562 data
->res
.lr_res
= NULL
;
5563 data
->res
.lr_ret
= 0;
5564 rpc_restart_call_prepare(task
);
5569 switch (task
->tk_status
) {
5571 renew_lease(data
->res
.server
, data
->timestamp
);
5573 case -NFS4ERR_ADMIN_REVOKED
:
5574 case -NFS4ERR_DELEG_REVOKED
:
5575 case -NFS4ERR_EXPIRED
:
5576 nfs4_free_revoked_stateid(data
->res
.server
,
5578 task
->tk_msg
.rpc_cred
);
5579 case -NFS4ERR_BAD_STATEID
:
5580 case -NFS4ERR_OLD_STATEID
:
5581 case -NFS4ERR_STALE_STATEID
:
5582 task
->tk_status
= 0;
5584 case -NFS4ERR_ACCESS
:
5585 if (data
->args
.bitmask
) {
5586 data
->args
.bitmask
= NULL
;
5587 data
->res
.fattr
= NULL
;
5588 task
->tk_status
= 0;
5589 rpc_restart_call_prepare(task
);
5593 if (nfs4_async_handle_error(task
, data
->res
.server
,
5594 NULL
, NULL
) == -EAGAIN
) {
5595 rpc_restart_call_prepare(task
);
5599 data
->rpc_status
= task
->tk_status
;
5602 static void nfs4_delegreturn_release(void *calldata
)
5604 struct nfs4_delegreturndata
*data
= calldata
;
5605 struct inode
*inode
= data
->inode
;
5609 pnfs_roc_release(&data
->lr
.arg
, &data
->lr
.res
,
5611 nfs_post_op_update_inode_force_wcc(inode
, &data
->fattr
);
5612 nfs_iput_and_deactive(inode
);
5617 static void nfs4_delegreturn_prepare(struct rpc_task
*task
, void *data
)
5619 struct nfs4_delegreturndata
*d_data
;
5621 d_data
= (struct nfs4_delegreturndata
*)data
;
5623 if (!d_data
->lr
.roc
&& nfs4_wait_on_layoutreturn(d_data
->inode
, task
))
5626 nfs4_setup_sequence(d_data
->res
.server
->nfs_client
,
5627 &d_data
->args
.seq_args
,
5628 &d_data
->res
.seq_res
,
5632 static const struct rpc_call_ops nfs4_delegreturn_ops
= {
5633 .rpc_call_prepare
= nfs4_delegreturn_prepare
,
5634 .rpc_call_done
= nfs4_delegreturn_done
,
5635 .rpc_release
= nfs4_delegreturn_release
,
5638 static int _nfs4_proc_delegreturn(struct inode
*inode
, struct rpc_cred
*cred
, const nfs4_stateid
*stateid
, int issync
)
5640 struct nfs4_delegreturndata
*data
;
5641 struct nfs_server
*server
= NFS_SERVER(inode
);
5642 struct rpc_task
*task
;
5643 struct rpc_message msg
= {
5644 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_DELEGRETURN
],
5647 struct rpc_task_setup task_setup_data
= {
5648 .rpc_client
= server
->client
,
5649 .rpc_message
= &msg
,
5650 .callback_ops
= &nfs4_delegreturn_ops
,
5651 .flags
= RPC_TASK_ASYNC
,
5655 data
= kzalloc(sizeof(*data
), GFP_NOFS
);
5658 nfs4_init_sequence(&data
->args
.seq_args
, &data
->res
.seq_res
, 1);
5660 nfs4_state_protect(server
->nfs_client
,
5661 NFS_SP4_MACH_CRED_CLEANUP
,
5662 &task_setup_data
.rpc_client
, &msg
);
5664 data
->args
.fhandle
= &data
->fh
;
5665 data
->args
.stateid
= &data
->stateid
;
5666 data
->args
.bitmask
= server
->cache_consistency_bitmask
;
5667 nfs_copy_fh(&data
->fh
, NFS_FH(inode
));
5668 nfs4_stateid_copy(&data
->stateid
, stateid
);
5669 data
->res
.fattr
= &data
->fattr
;
5670 data
->res
.server
= server
;
5671 data
->res
.lr_ret
= -NFS4ERR_NOMATCHING_LAYOUT
;
5672 data
->lr
.arg
.ld_private
= &data
->lr
.ld_private
;
5673 nfs_fattr_init(data
->res
.fattr
);
5674 data
->timestamp
= jiffies
;
5675 data
->rpc_status
= 0;
5676 data
->lr
.roc
= pnfs_roc(inode
, &data
->lr
.arg
, &data
->lr
.res
, cred
);
5677 data
->inode
= nfs_igrab_and_active(inode
);
5680 data
->args
.lr_args
= &data
->lr
.arg
;
5681 data
->res
.lr_res
= &data
->lr
.res
;
5683 } else if (data
->lr
.roc
) {
5684 pnfs_roc_release(&data
->lr
.arg
, &data
->lr
.res
, 0);
5685 data
->lr
.roc
= false;
5688 task_setup_data
.callback_data
= data
;
5689 msg
.rpc_argp
= &data
->args
;
5690 msg
.rpc_resp
= &data
->res
;
5691 task
= rpc_run_task(&task_setup_data
);
5693 return PTR_ERR(task
);
5696 status
= rpc_wait_for_completion_task(task
);
5699 status
= data
->rpc_status
;
5705 int nfs4_proc_delegreturn(struct inode
*inode
, struct rpc_cred
*cred
, const nfs4_stateid
*stateid
, int issync
)
5707 struct nfs_server
*server
= NFS_SERVER(inode
);
5708 struct nfs4_exception exception
= { };
5711 err
= _nfs4_proc_delegreturn(inode
, cred
, stateid
, issync
);
5712 trace_nfs4_delegreturn(inode
, stateid
, err
);
5714 case -NFS4ERR_STALE_STATEID
:
5715 case -NFS4ERR_EXPIRED
:
5719 err
= nfs4_handle_exception(server
, err
, &exception
);
5720 } while (exception
.retry
);
5724 static int _nfs4_proc_getlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
5726 struct inode
*inode
= state
->inode
;
5727 struct nfs_server
*server
= NFS_SERVER(inode
);
5728 struct nfs_client
*clp
= server
->nfs_client
;
5729 struct nfs_lockt_args arg
= {
5730 .fh
= NFS_FH(inode
),
5733 struct nfs_lockt_res res
= {
5736 struct rpc_message msg
= {
5737 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOCKT
],
5740 .rpc_cred
= state
->owner
->so_cred
,
5742 struct nfs4_lock_state
*lsp
;
5745 arg
.lock_owner
.clientid
= clp
->cl_clientid
;
5746 status
= nfs4_set_lock_state(state
, request
);
5749 lsp
= request
->fl_u
.nfs4_fl
.owner
;
5750 arg
.lock_owner
.id
= lsp
->ls_seqid
.owner_id
;
5751 arg
.lock_owner
.s_dev
= server
->s_dev
;
5752 status
= nfs4_call_sync(server
->client
, server
, &msg
, &arg
.seq_args
, &res
.seq_res
, 1);
5755 request
->fl_type
= F_UNLCK
;
5757 case -NFS4ERR_DENIED
:
5760 request
->fl_ops
->fl_release_private(request
);
5761 request
->fl_ops
= NULL
;
5766 static int nfs4_proc_getlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
5768 struct nfs4_exception exception
= { };
5772 err
= _nfs4_proc_getlk(state
, cmd
, request
);
5773 trace_nfs4_get_lock(request
, state
, cmd
, err
);
5774 err
= nfs4_handle_exception(NFS_SERVER(state
->inode
), err
,
5776 } while (exception
.retry
);
5780 struct nfs4_unlockdata
{
5781 struct nfs_locku_args arg
;
5782 struct nfs_locku_res res
;
5783 struct nfs4_lock_state
*lsp
;
5784 struct nfs_open_context
*ctx
;
5785 struct file_lock fl
;
5786 struct nfs_server
*server
;
5787 unsigned long timestamp
;
5790 static struct nfs4_unlockdata
*nfs4_alloc_unlockdata(struct file_lock
*fl
,
5791 struct nfs_open_context
*ctx
,
5792 struct nfs4_lock_state
*lsp
,
5793 struct nfs_seqid
*seqid
)
5795 struct nfs4_unlockdata
*p
;
5796 struct inode
*inode
= lsp
->ls_state
->inode
;
5798 p
= kzalloc(sizeof(*p
), GFP_NOFS
);
5801 p
->arg
.fh
= NFS_FH(inode
);
5803 p
->arg
.seqid
= seqid
;
5804 p
->res
.seqid
= seqid
;
5806 atomic_inc(&lsp
->ls_count
);
5807 /* Ensure we don't close file until we're done freeing locks! */
5808 p
->ctx
= get_nfs_open_context(ctx
);
5809 memcpy(&p
->fl
, fl
, sizeof(p
->fl
));
5810 p
->server
= NFS_SERVER(inode
);
5814 static void nfs4_locku_release_calldata(void *data
)
5816 struct nfs4_unlockdata
*calldata
= data
;
5817 nfs_free_seqid(calldata
->arg
.seqid
);
5818 nfs4_put_lock_state(calldata
->lsp
);
5819 put_nfs_open_context(calldata
->ctx
);
5823 static void nfs4_locku_done(struct rpc_task
*task
, void *data
)
5825 struct nfs4_unlockdata
*calldata
= data
;
5827 if (!nfs4_sequence_done(task
, &calldata
->res
.seq_res
))
5829 switch (task
->tk_status
) {
5831 renew_lease(calldata
->server
, calldata
->timestamp
);
5832 locks_lock_inode_wait(calldata
->lsp
->ls_state
->inode
, &calldata
->fl
);
5833 if (nfs4_update_lock_stateid(calldata
->lsp
,
5834 &calldata
->res
.stateid
))
5836 case -NFS4ERR_ADMIN_REVOKED
:
5837 case -NFS4ERR_EXPIRED
:
5838 nfs4_free_revoked_stateid(calldata
->server
,
5839 &calldata
->arg
.stateid
,
5840 task
->tk_msg
.rpc_cred
);
5841 case -NFS4ERR_BAD_STATEID
:
5842 case -NFS4ERR_OLD_STATEID
:
5843 case -NFS4ERR_STALE_STATEID
:
5844 if (!nfs4_stateid_match(&calldata
->arg
.stateid
,
5845 &calldata
->lsp
->ls_stateid
))
5846 rpc_restart_call_prepare(task
);
5849 if (nfs4_async_handle_error(task
, calldata
->server
,
5850 NULL
, NULL
) == -EAGAIN
)
5851 rpc_restart_call_prepare(task
);
5853 nfs_release_seqid(calldata
->arg
.seqid
);
5856 static void nfs4_locku_prepare(struct rpc_task
*task
, void *data
)
5858 struct nfs4_unlockdata
*calldata
= data
;
5860 if (nfs_wait_on_sequence(calldata
->arg
.seqid
, task
) != 0)
5862 nfs4_stateid_copy(&calldata
->arg
.stateid
, &calldata
->lsp
->ls_stateid
);
5863 if (test_bit(NFS_LOCK_INITIALIZED
, &calldata
->lsp
->ls_flags
) == 0) {
5864 /* Note: exit _without_ running nfs4_locku_done */
5867 calldata
->timestamp
= jiffies
;
5868 if (nfs4_setup_sequence(calldata
->server
->nfs_client
,
5869 &calldata
->arg
.seq_args
,
5870 &calldata
->res
.seq_res
,
5872 nfs_release_seqid(calldata
->arg
.seqid
);
5875 task
->tk_action
= NULL
;
5877 nfs4_sequence_done(task
, &calldata
->res
.seq_res
);
5880 static const struct rpc_call_ops nfs4_locku_ops
= {
5881 .rpc_call_prepare
= nfs4_locku_prepare
,
5882 .rpc_call_done
= nfs4_locku_done
,
5883 .rpc_release
= nfs4_locku_release_calldata
,
5886 static struct rpc_task
*nfs4_do_unlck(struct file_lock
*fl
,
5887 struct nfs_open_context
*ctx
,
5888 struct nfs4_lock_state
*lsp
,
5889 struct nfs_seqid
*seqid
)
5891 struct nfs4_unlockdata
*data
;
5892 struct rpc_message msg
= {
5893 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOCKU
],
5894 .rpc_cred
= ctx
->cred
,
5896 struct rpc_task_setup task_setup_data
= {
5897 .rpc_client
= NFS_CLIENT(lsp
->ls_state
->inode
),
5898 .rpc_message
= &msg
,
5899 .callback_ops
= &nfs4_locku_ops
,
5900 .workqueue
= nfsiod_workqueue
,
5901 .flags
= RPC_TASK_ASYNC
,
5904 nfs4_state_protect(NFS_SERVER(lsp
->ls_state
->inode
)->nfs_client
,
5905 NFS_SP4_MACH_CRED_CLEANUP
, &task_setup_data
.rpc_client
, &msg
);
5907 /* Ensure this is an unlock - when canceling a lock, the
5908 * canceled lock is passed in, and it won't be an unlock.
5910 fl
->fl_type
= F_UNLCK
;
5912 data
= nfs4_alloc_unlockdata(fl
, ctx
, lsp
, seqid
);
5914 nfs_free_seqid(seqid
);
5915 return ERR_PTR(-ENOMEM
);
5918 nfs4_init_sequence(&data
->arg
.seq_args
, &data
->res
.seq_res
, 1);
5919 msg
.rpc_argp
= &data
->arg
;
5920 msg
.rpc_resp
= &data
->res
;
5921 task_setup_data
.callback_data
= data
;
5922 return rpc_run_task(&task_setup_data
);
5925 static int nfs4_proc_unlck(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
5927 struct inode
*inode
= state
->inode
;
5928 struct nfs4_state_owner
*sp
= state
->owner
;
5929 struct nfs_inode
*nfsi
= NFS_I(inode
);
5930 struct nfs_seqid
*seqid
;
5931 struct nfs4_lock_state
*lsp
;
5932 struct rpc_task
*task
;
5933 struct nfs_seqid
*(*alloc_seqid
)(struct nfs_seqid_counter
*, gfp_t
);
5935 unsigned char fl_flags
= request
->fl_flags
;
5937 status
= nfs4_set_lock_state(state
, request
);
5938 /* Unlock _before_ we do the RPC call */
5939 request
->fl_flags
|= FL_EXISTS
;
5940 /* Exclude nfs_delegation_claim_locks() */
5941 mutex_lock(&sp
->so_delegreturn_mutex
);
5942 /* Exclude nfs4_reclaim_open_stateid() - note nesting! */
5943 down_read(&nfsi
->rwsem
);
5944 if (locks_lock_inode_wait(inode
, request
) == -ENOENT
) {
5945 up_read(&nfsi
->rwsem
);
5946 mutex_unlock(&sp
->so_delegreturn_mutex
);
5949 up_read(&nfsi
->rwsem
);
5950 mutex_unlock(&sp
->so_delegreturn_mutex
);
5953 /* Is this a delegated lock? */
5954 lsp
= request
->fl_u
.nfs4_fl
.owner
;
5955 if (test_bit(NFS_LOCK_INITIALIZED
, &lsp
->ls_flags
) == 0)
5957 alloc_seqid
= NFS_SERVER(inode
)->nfs_client
->cl_mvops
->alloc_seqid
;
5958 seqid
= alloc_seqid(&lsp
->ls_seqid
, GFP_KERNEL
);
5962 task
= nfs4_do_unlck(request
, nfs_file_open_context(request
->fl_file
), lsp
, seqid
);
5963 status
= PTR_ERR(task
);
5966 status
= rpc_wait_for_completion_task(task
);
5969 request
->fl_flags
= fl_flags
;
5970 trace_nfs4_unlock(request
, state
, F_SETLK
, status
);
5974 struct nfs4_lockdata
{
5975 struct nfs_lock_args arg
;
5976 struct nfs_lock_res res
;
5977 struct nfs4_lock_state
*lsp
;
5978 struct nfs_open_context
*ctx
;
5979 struct file_lock fl
;
5980 unsigned long timestamp
;
5983 struct nfs_server
*server
;
5986 static struct nfs4_lockdata
*nfs4_alloc_lockdata(struct file_lock
*fl
,
5987 struct nfs_open_context
*ctx
, struct nfs4_lock_state
*lsp
,
5990 struct nfs4_lockdata
*p
;
5991 struct inode
*inode
= lsp
->ls_state
->inode
;
5992 struct nfs_server
*server
= NFS_SERVER(inode
);
5993 struct nfs_seqid
*(*alloc_seqid
)(struct nfs_seqid_counter
*, gfp_t
);
5995 p
= kzalloc(sizeof(*p
), gfp_mask
);
5999 p
->arg
.fh
= NFS_FH(inode
);
6001 p
->arg
.open_seqid
= nfs_alloc_seqid(&lsp
->ls_state
->owner
->so_seqid
, gfp_mask
);
6002 if (IS_ERR(p
->arg
.open_seqid
))
6004 alloc_seqid
= server
->nfs_client
->cl_mvops
->alloc_seqid
;
6005 p
->arg
.lock_seqid
= alloc_seqid(&lsp
->ls_seqid
, gfp_mask
);
6006 if (IS_ERR(p
->arg
.lock_seqid
))
6007 goto out_free_seqid
;
6008 p
->arg
.lock_owner
.clientid
= server
->nfs_client
->cl_clientid
;
6009 p
->arg
.lock_owner
.id
= lsp
->ls_seqid
.owner_id
;
6010 p
->arg
.lock_owner
.s_dev
= server
->s_dev
;
6011 p
->res
.lock_seqid
= p
->arg
.lock_seqid
;
6014 atomic_inc(&lsp
->ls_count
);
6015 p
->ctx
= get_nfs_open_context(ctx
);
6016 memcpy(&p
->fl
, fl
, sizeof(p
->fl
));
6019 nfs_free_seqid(p
->arg
.open_seqid
);
6025 static void nfs4_lock_prepare(struct rpc_task
*task
, void *calldata
)
6027 struct nfs4_lockdata
*data
= calldata
;
6028 struct nfs4_state
*state
= data
->lsp
->ls_state
;
6030 dprintk("%s: begin!\n", __func__
);
6031 if (nfs_wait_on_sequence(data
->arg
.lock_seqid
, task
) != 0)
6033 /* Do we need to do an open_to_lock_owner? */
6034 if (!test_bit(NFS_LOCK_INITIALIZED
, &data
->lsp
->ls_flags
)) {
6035 if (nfs_wait_on_sequence(data
->arg
.open_seqid
, task
) != 0) {
6036 goto out_release_lock_seqid
;
6038 nfs4_stateid_copy(&data
->arg
.open_stateid
,
6039 &state
->open_stateid
);
6040 data
->arg
.new_lock_owner
= 1;
6041 data
->res
.open_seqid
= data
->arg
.open_seqid
;
6043 data
->arg
.new_lock_owner
= 0;
6044 nfs4_stateid_copy(&data
->arg
.lock_stateid
,
6045 &data
->lsp
->ls_stateid
);
6047 if (!nfs4_valid_open_stateid(state
)) {
6048 data
->rpc_status
= -EBADF
;
6049 task
->tk_action
= NULL
;
6050 goto out_release_open_seqid
;
6052 data
->timestamp
= jiffies
;
6053 if (nfs4_setup_sequence(data
->server
->nfs_client
,
6054 &data
->arg
.seq_args
,
6058 out_release_open_seqid
:
6059 nfs_release_seqid(data
->arg
.open_seqid
);
6060 out_release_lock_seqid
:
6061 nfs_release_seqid(data
->arg
.lock_seqid
);
6063 nfs4_sequence_done(task
, &data
->res
.seq_res
);
6064 dprintk("%s: done!, ret = %d\n", __func__
, data
->rpc_status
);
6067 static void nfs4_lock_done(struct rpc_task
*task
, void *calldata
)
6069 struct nfs4_lockdata
*data
= calldata
;
6070 struct nfs4_lock_state
*lsp
= data
->lsp
;
6072 dprintk("%s: begin!\n", __func__
);
6074 if (!nfs4_sequence_done(task
, &data
->res
.seq_res
))
6077 data
->rpc_status
= task
->tk_status
;
6078 switch (task
->tk_status
) {
6080 renew_lease(NFS_SERVER(d_inode(data
->ctx
->dentry
)),
6082 if (data
->arg
.new_lock
) {
6083 data
->fl
.fl_flags
&= ~(FL_SLEEP
| FL_ACCESS
);
6084 if (locks_lock_inode_wait(lsp
->ls_state
->inode
, &data
->fl
) < 0) {
6085 rpc_restart_call_prepare(task
);
6089 if (data
->arg
.new_lock_owner
!= 0) {
6090 nfs_confirm_seqid(&lsp
->ls_seqid
, 0);
6091 nfs4_stateid_copy(&lsp
->ls_stateid
, &data
->res
.stateid
);
6092 set_bit(NFS_LOCK_INITIALIZED
, &lsp
->ls_flags
);
6093 } else if (!nfs4_update_lock_stateid(lsp
, &data
->res
.stateid
))
6094 rpc_restart_call_prepare(task
);
6096 case -NFS4ERR_BAD_STATEID
:
6097 case -NFS4ERR_OLD_STATEID
:
6098 case -NFS4ERR_STALE_STATEID
:
6099 case -NFS4ERR_EXPIRED
:
6100 if (data
->arg
.new_lock_owner
!= 0) {
6101 if (!nfs4_stateid_match(&data
->arg
.open_stateid
,
6102 &lsp
->ls_state
->open_stateid
))
6103 rpc_restart_call_prepare(task
);
6104 } else if (!nfs4_stateid_match(&data
->arg
.lock_stateid
,
6106 rpc_restart_call_prepare(task
);
6108 dprintk("%s: done, ret = %d!\n", __func__
, data
->rpc_status
);
6111 static void nfs4_lock_release(void *calldata
)
6113 struct nfs4_lockdata
*data
= calldata
;
6115 dprintk("%s: begin!\n", __func__
);
6116 nfs_free_seqid(data
->arg
.open_seqid
);
6117 if (data
->cancelled
!= 0) {
6118 struct rpc_task
*task
;
6119 task
= nfs4_do_unlck(&data
->fl
, data
->ctx
, data
->lsp
,
6120 data
->arg
.lock_seqid
);
6122 rpc_put_task_async(task
);
6123 dprintk("%s: cancelling lock!\n", __func__
);
6125 nfs_free_seqid(data
->arg
.lock_seqid
);
6126 nfs4_put_lock_state(data
->lsp
);
6127 put_nfs_open_context(data
->ctx
);
6129 dprintk("%s: done!\n", __func__
);
6132 static const struct rpc_call_ops nfs4_lock_ops
= {
6133 .rpc_call_prepare
= nfs4_lock_prepare
,
6134 .rpc_call_done
= nfs4_lock_done
,
6135 .rpc_release
= nfs4_lock_release
,
6138 static void nfs4_handle_setlk_error(struct nfs_server
*server
, struct nfs4_lock_state
*lsp
, int new_lock_owner
, int error
)
6141 case -NFS4ERR_ADMIN_REVOKED
:
6142 case -NFS4ERR_EXPIRED
:
6143 case -NFS4ERR_BAD_STATEID
:
6144 lsp
->ls_seqid
.flags
&= ~NFS_SEQID_CONFIRMED
;
6145 if (new_lock_owner
!= 0 ||
6146 test_bit(NFS_LOCK_INITIALIZED
, &lsp
->ls_flags
) != 0)
6147 nfs4_schedule_stateid_recovery(server
, lsp
->ls_state
);
6149 case -NFS4ERR_STALE_STATEID
:
6150 lsp
->ls_seqid
.flags
&= ~NFS_SEQID_CONFIRMED
;
6151 nfs4_schedule_lease_recovery(server
->nfs_client
);
6155 static int _nfs4_do_setlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*fl
, int recovery_type
)
6157 struct nfs4_lockdata
*data
;
6158 struct rpc_task
*task
;
6159 struct rpc_message msg
= {
6160 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOCK
],
6161 .rpc_cred
= state
->owner
->so_cred
,
6163 struct rpc_task_setup task_setup_data
= {
6164 .rpc_client
= NFS_CLIENT(state
->inode
),
6165 .rpc_message
= &msg
,
6166 .callback_ops
= &nfs4_lock_ops
,
6167 .workqueue
= nfsiod_workqueue
,
6168 .flags
= RPC_TASK_ASYNC
,
6172 dprintk("%s: begin!\n", __func__
);
6173 data
= nfs4_alloc_lockdata(fl
, nfs_file_open_context(fl
->fl_file
),
6174 fl
->fl_u
.nfs4_fl
.owner
,
6175 recovery_type
== NFS_LOCK_NEW
? GFP_KERNEL
: GFP_NOFS
);
6179 data
->arg
.block
= 1;
6180 nfs4_init_sequence(&data
->arg
.seq_args
, &data
->res
.seq_res
, 1);
6181 msg
.rpc_argp
= &data
->arg
;
6182 msg
.rpc_resp
= &data
->res
;
6183 task_setup_data
.callback_data
= data
;
6184 if (recovery_type
> NFS_LOCK_NEW
) {
6185 if (recovery_type
== NFS_LOCK_RECLAIM
)
6186 data
->arg
.reclaim
= NFS_LOCK_RECLAIM
;
6187 nfs4_set_sequence_privileged(&data
->arg
.seq_args
);
6189 data
->arg
.new_lock
= 1;
6190 task
= rpc_run_task(&task_setup_data
);
6192 return PTR_ERR(task
);
6193 ret
= rpc_wait_for_completion_task(task
);
6195 ret
= data
->rpc_status
;
6197 nfs4_handle_setlk_error(data
->server
, data
->lsp
,
6198 data
->arg
.new_lock_owner
, ret
);
6200 data
->cancelled
= 1;
6202 dprintk("%s: done, ret = %d!\n", __func__
, ret
);
6203 trace_nfs4_set_lock(fl
, state
, &data
->res
.stateid
, cmd
, ret
);
6207 static int nfs4_lock_reclaim(struct nfs4_state
*state
, struct file_lock
*request
)
6209 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
6210 struct nfs4_exception exception
= {
6211 .inode
= state
->inode
,
6216 /* Cache the lock if possible... */
6217 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) != 0)
6219 err
= _nfs4_do_setlk(state
, F_SETLK
, request
, NFS_LOCK_RECLAIM
);
6220 if (err
!= -NFS4ERR_DELAY
)
6222 nfs4_handle_exception(server
, err
, &exception
);
6223 } while (exception
.retry
);
6227 static int nfs4_lock_expired(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
,
6235 err
= nfs4_set_lock_state(state
, request
);
6238 if (!recover_lost_locks
) {
6239 set_bit(NFS_LOCK_LOST
, &request
->fl_u
.nfs4_fl
.owner
->ls_flags
);
6243 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) != 0)
6245 err
= _nfs4_do_setlk(state
, F_SETLK
, request
, NFS_LOCK_EXPIRED
);
6249 case -NFS4ERR_GRACE
:
6250 case -NFS4ERR_DELAY
:
6251 nfs4_handle_exception(server
, err
, &exception
);
6254 } while (exception
.retry
);
6259 #if defined(CONFIG_NFS_V4_1)
6260 static int nfs41_lock_expired(struct nfs4_state
*state
, struct file_lock
*request
)
6262 struct nfs4_lock_state
*lsp
;
6265 status
= nfs4_set_lock_state(state
, request
);
6268 lsp
= request
->fl_u
.nfs4_fl
.owner
;
6269 if (test_bit(NFS_LOCK_INITIALIZED
, &lsp
->ls_flags
) ||
6270 test_bit(NFS_LOCK_LOST
, &lsp
->ls_flags
))
6272 return nfs4_lock_expired(state
, request
);
6276 static int _nfs4_proc_setlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
6278 struct nfs_inode
*nfsi
= NFS_I(state
->inode
);
6279 struct nfs4_state_owner
*sp
= state
->owner
;
6280 unsigned char fl_flags
= request
->fl_flags
;
6283 request
->fl_flags
|= FL_ACCESS
;
6284 status
= locks_lock_inode_wait(state
->inode
, request
);
6287 mutex_lock(&sp
->so_delegreturn_mutex
);
6288 down_read(&nfsi
->rwsem
);
6289 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
)) {
6290 /* Yes: cache locks! */
6291 /* ...but avoid races with delegation recall... */
6292 request
->fl_flags
= fl_flags
& ~FL_SLEEP
;
6293 status
= locks_lock_inode_wait(state
->inode
, request
);
6294 up_read(&nfsi
->rwsem
);
6295 mutex_unlock(&sp
->so_delegreturn_mutex
);
6298 up_read(&nfsi
->rwsem
);
6299 mutex_unlock(&sp
->so_delegreturn_mutex
);
6300 status
= _nfs4_do_setlk(state
, cmd
, request
, NFS_LOCK_NEW
);
6302 request
->fl_flags
= fl_flags
;
6306 static int nfs4_proc_setlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
6308 struct nfs4_exception exception
= {
6310 .inode
= state
->inode
,
6315 err
= _nfs4_proc_setlk(state
, cmd
, request
);
6316 if (err
== -NFS4ERR_DENIED
)
6318 err
= nfs4_handle_exception(NFS_SERVER(state
->inode
),
6320 } while (exception
.retry
);
6324 #define NFS4_LOCK_MINTIMEOUT (1 * HZ)
6325 #define NFS4_LOCK_MAXTIMEOUT (30 * HZ)
6328 nfs4_retry_setlk_simple(struct nfs4_state
*state
, int cmd
,
6329 struct file_lock
*request
)
6331 int status
= -ERESTARTSYS
;
6332 unsigned long timeout
= NFS4_LOCK_MINTIMEOUT
;
6334 while(!signalled()) {
6335 status
= nfs4_proc_setlk(state
, cmd
, request
);
6336 if ((status
!= -EAGAIN
) || IS_SETLK(cmd
))
6338 freezable_schedule_timeout_interruptible(timeout
);
6340 timeout
= min_t(unsigned long, NFS4_LOCK_MAXTIMEOUT
, timeout
);
6341 status
= -ERESTARTSYS
;
6346 #ifdef CONFIG_NFS_V4_1
6347 struct nfs4_lock_waiter
{
6348 struct task_struct
*task
;
6349 struct inode
*inode
;
6350 struct nfs_lowner
*owner
;
6355 nfs4_wake_lock_waiter(wait_queue_t
*wait
, unsigned int mode
, int flags
, void *key
)
6358 struct cb_notify_lock_args
*cbnl
= key
;
6359 struct nfs4_lock_waiter
*waiter
= wait
->private;
6360 struct nfs_lowner
*lowner
= &cbnl
->cbnl_owner
,
6361 *wowner
= waiter
->owner
;
6363 /* Only wake if the callback was for the same owner */
6364 if (lowner
->clientid
!= wowner
->clientid
||
6365 lowner
->id
!= wowner
->id
||
6366 lowner
->s_dev
!= wowner
->s_dev
)
6369 /* Make sure it's for the right inode */
6370 if (nfs_compare_fh(NFS_FH(waiter
->inode
), &cbnl
->cbnl_fh
))
6373 waiter
->notified
= true;
6375 /* override "private" so we can use default_wake_function */
6376 wait
->private = waiter
->task
;
6377 ret
= autoremove_wake_function(wait
, mode
, flags
, key
);
6378 wait
->private = waiter
;
6383 nfs4_retry_setlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
6385 int status
= -ERESTARTSYS
;
6386 unsigned long flags
;
6387 struct nfs4_lock_state
*lsp
= request
->fl_u
.nfs4_fl
.owner
;
6388 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
6389 struct nfs_client
*clp
= server
->nfs_client
;
6390 wait_queue_head_t
*q
= &clp
->cl_lock_waitq
;
6391 struct nfs_lowner owner
= { .clientid
= clp
->cl_clientid
,
6392 .id
= lsp
->ls_seqid
.owner_id
,
6393 .s_dev
= server
->s_dev
};
6394 struct nfs4_lock_waiter waiter
= { .task
= current
,
6395 .inode
= state
->inode
,
6397 .notified
= false };
6400 /* Don't bother with waitqueue if we don't expect a callback */
6401 if (!test_bit(NFS_STATE_MAY_NOTIFY_LOCK
, &state
->flags
))
6402 return nfs4_retry_setlk_simple(state
, cmd
, request
);
6405 wait
.private = &waiter
;
6406 wait
.func
= nfs4_wake_lock_waiter
;
6407 add_wait_queue(q
, &wait
);
6409 while(!signalled()) {
6410 status
= nfs4_proc_setlk(state
, cmd
, request
);
6411 if ((status
!= -EAGAIN
) || IS_SETLK(cmd
))
6414 status
= -ERESTARTSYS
;
6415 spin_lock_irqsave(&q
->lock
, flags
);
6416 if (waiter
.notified
) {
6417 spin_unlock_irqrestore(&q
->lock
, flags
);
6420 set_current_state(TASK_INTERRUPTIBLE
);
6421 spin_unlock_irqrestore(&q
->lock
, flags
);
6423 freezable_schedule_timeout_interruptible(NFS4_LOCK_MAXTIMEOUT
);
6426 finish_wait(q
, &wait
);
6429 #else /* !CONFIG_NFS_V4_1 */
6431 nfs4_retry_setlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
6433 return nfs4_retry_setlk_simple(state
, cmd
, request
);
6438 nfs4_proc_lock(struct file
*filp
, int cmd
, struct file_lock
*request
)
6440 struct nfs_open_context
*ctx
;
6441 struct nfs4_state
*state
;
6444 /* verify open state */
6445 ctx
= nfs_file_open_context(filp
);
6448 if (request
->fl_start
< 0 || request
->fl_end
< 0)
6451 if (IS_GETLK(cmd
)) {
6453 return nfs4_proc_getlk(state
, F_GETLK
, request
);
6457 if (!(IS_SETLK(cmd
) || IS_SETLKW(cmd
)))
6460 if (request
->fl_type
== F_UNLCK
) {
6462 return nfs4_proc_unlck(state
, cmd
, request
);
6469 if ((request
->fl_flags
& FL_POSIX
) &&
6470 !test_bit(NFS_STATE_POSIX_LOCKS
, &state
->flags
))
6474 * Don't rely on the VFS having checked the file open mode,
6475 * since it won't do this for flock() locks.
6477 switch (request
->fl_type
) {
6479 if (!(filp
->f_mode
& FMODE_READ
))
6483 if (!(filp
->f_mode
& FMODE_WRITE
))
6487 status
= nfs4_set_lock_state(state
, request
);
6491 return nfs4_retry_setlk(state
, cmd
, request
);
6494 int nfs4_lock_delegation_recall(struct file_lock
*fl
, struct nfs4_state
*state
, const nfs4_stateid
*stateid
)
6496 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
6499 err
= nfs4_set_lock_state(state
, fl
);
6502 err
= _nfs4_do_setlk(state
, F_SETLK
, fl
, NFS_LOCK_NEW
);
6503 return nfs4_handle_delegation_recall_error(server
, state
, stateid
, err
);
6506 struct nfs_release_lockowner_data
{
6507 struct nfs4_lock_state
*lsp
;
6508 struct nfs_server
*server
;
6509 struct nfs_release_lockowner_args args
;
6510 struct nfs_release_lockowner_res res
;
6511 unsigned long timestamp
;
6514 static void nfs4_release_lockowner_prepare(struct rpc_task
*task
, void *calldata
)
6516 struct nfs_release_lockowner_data
*data
= calldata
;
6517 struct nfs_server
*server
= data
->server
;
6518 nfs4_setup_sequence(server
->nfs_client
, &data
->args
.seq_args
,
6519 &data
->res
.seq_res
, task
);
6520 data
->args
.lock_owner
.clientid
= server
->nfs_client
->cl_clientid
;
6521 data
->timestamp
= jiffies
;
6524 static void nfs4_release_lockowner_done(struct rpc_task
*task
, void *calldata
)
6526 struct nfs_release_lockowner_data
*data
= calldata
;
6527 struct nfs_server
*server
= data
->server
;
6529 nfs40_sequence_done(task
, &data
->res
.seq_res
);
6531 switch (task
->tk_status
) {
6533 renew_lease(server
, data
->timestamp
);
6535 case -NFS4ERR_STALE_CLIENTID
:
6536 case -NFS4ERR_EXPIRED
:
6537 nfs4_schedule_lease_recovery(server
->nfs_client
);
6539 case -NFS4ERR_LEASE_MOVED
:
6540 case -NFS4ERR_DELAY
:
6541 if (nfs4_async_handle_error(task
, server
,
6542 NULL
, NULL
) == -EAGAIN
)
6543 rpc_restart_call_prepare(task
);
6547 static void nfs4_release_lockowner_release(void *calldata
)
6549 struct nfs_release_lockowner_data
*data
= calldata
;
6550 nfs4_free_lock_state(data
->server
, data
->lsp
);
6554 static const struct rpc_call_ops nfs4_release_lockowner_ops
= {
6555 .rpc_call_prepare
= nfs4_release_lockowner_prepare
,
6556 .rpc_call_done
= nfs4_release_lockowner_done
,
6557 .rpc_release
= nfs4_release_lockowner_release
,
6561 nfs4_release_lockowner(struct nfs_server
*server
, struct nfs4_lock_state
*lsp
)
6563 struct nfs_release_lockowner_data
*data
;
6564 struct rpc_message msg
= {
6565 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RELEASE_LOCKOWNER
],
6568 if (server
->nfs_client
->cl_mvops
->minor_version
!= 0)
6571 data
= kmalloc(sizeof(*data
), GFP_NOFS
);
6575 data
->server
= server
;
6576 data
->args
.lock_owner
.clientid
= server
->nfs_client
->cl_clientid
;
6577 data
->args
.lock_owner
.id
= lsp
->ls_seqid
.owner_id
;
6578 data
->args
.lock_owner
.s_dev
= server
->s_dev
;
6580 msg
.rpc_argp
= &data
->args
;
6581 msg
.rpc_resp
= &data
->res
;
6582 nfs4_init_sequence(&data
->args
.seq_args
, &data
->res
.seq_res
, 0);
6583 rpc_call_async(server
->client
, &msg
, 0, &nfs4_release_lockowner_ops
, data
);
6586 #define XATTR_NAME_NFSV4_ACL "system.nfs4_acl"
6588 static int nfs4_xattr_set_nfs4_acl(const struct xattr_handler
*handler
,
6589 struct dentry
*unused
, struct inode
*inode
,
6590 const char *key
, const void *buf
,
6591 size_t buflen
, int flags
)
6593 return nfs4_proc_set_acl(inode
, buf
, buflen
);
6596 static int nfs4_xattr_get_nfs4_acl(const struct xattr_handler
*handler
,
6597 struct dentry
*unused
, struct inode
*inode
,
6598 const char *key
, void *buf
, size_t buflen
)
6600 return nfs4_proc_get_acl(inode
, buf
, buflen
);
6603 static bool nfs4_xattr_list_nfs4_acl(struct dentry
*dentry
)
6605 return nfs4_server_supports_acls(NFS_SERVER(d_inode(dentry
)));
6608 #ifdef CONFIG_NFS_V4_SECURITY_LABEL
6610 static int nfs4_xattr_set_nfs4_label(const struct xattr_handler
*handler
,
6611 struct dentry
*unused
, struct inode
*inode
,
6612 const char *key
, const void *buf
,
6613 size_t buflen
, int flags
)
6615 if (security_ismaclabel(key
))
6616 return nfs4_set_security_label(inode
, buf
, buflen
);
6621 static int nfs4_xattr_get_nfs4_label(const struct xattr_handler
*handler
,
6622 struct dentry
*unused
, struct inode
*inode
,
6623 const char *key
, void *buf
, size_t buflen
)
6625 if (security_ismaclabel(key
))
6626 return nfs4_get_security_label(inode
, buf
, buflen
);
6631 nfs4_listxattr_nfs4_label(struct inode
*inode
, char *list
, size_t list_len
)
6635 if (nfs_server_capable(inode
, NFS_CAP_SECURITY_LABEL
)) {
6636 len
= security_inode_listsecurity(inode
, list
, list_len
);
6637 if (list_len
&& len
> list_len
)
6643 static const struct xattr_handler nfs4_xattr_nfs4_label_handler
= {
6644 .prefix
= XATTR_SECURITY_PREFIX
,
6645 .get
= nfs4_xattr_get_nfs4_label
,
6646 .set
= nfs4_xattr_set_nfs4_label
,
6652 nfs4_listxattr_nfs4_label(struct inode
*inode
, char *list
, size_t list_len
)
6660 * nfs_fhget will use either the mounted_on_fileid or the fileid
6662 static void nfs_fixup_referral_attributes(struct nfs_fattr
*fattr
)
6664 if (!(((fattr
->valid
& NFS_ATTR_FATTR_MOUNTED_ON_FILEID
) ||
6665 (fattr
->valid
& NFS_ATTR_FATTR_FILEID
)) &&
6666 (fattr
->valid
& NFS_ATTR_FATTR_FSID
) &&
6667 (fattr
->valid
& NFS_ATTR_FATTR_V4_LOCATIONS
)))
6670 fattr
->valid
|= NFS_ATTR_FATTR_TYPE
| NFS_ATTR_FATTR_MODE
|
6671 NFS_ATTR_FATTR_NLINK
| NFS_ATTR_FATTR_V4_REFERRAL
;
6672 fattr
->mode
= S_IFDIR
| S_IRUGO
| S_IXUGO
;
6676 static int _nfs4_proc_fs_locations(struct rpc_clnt
*client
, struct inode
*dir
,
6677 const struct qstr
*name
,
6678 struct nfs4_fs_locations
*fs_locations
,
6681 struct nfs_server
*server
= NFS_SERVER(dir
);
6683 [0] = FATTR4_WORD0_FSID
| FATTR4_WORD0_FS_LOCATIONS
,
6685 struct nfs4_fs_locations_arg args
= {
6686 .dir_fh
= NFS_FH(dir
),
6691 struct nfs4_fs_locations_res res
= {
6692 .fs_locations
= fs_locations
,
6694 struct rpc_message msg
= {
6695 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_FS_LOCATIONS
],
6701 dprintk("%s: start\n", __func__
);
6703 /* Ask for the fileid of the absent filesystem if mounted_on_fileid
6704 * is not supported */
6705 if (NFS_SERVER(dir
)->attr_bitmask
[1] & FATTR4_WORD1_MOUNTED_ON_FILEID
)
6706 bitmask
[1] |= FATTR4_WORD1_MOUNTED_ON_FILEID
;
6708 bitmask
[0] |= FATTR4_WORD0_FILEID
;
6710 nfs_fattr_init(&fs_locations
->fattr
);
6711 fs_locations
->server
= server
;
6712 fs_locations
->nlocations
= 0;
6713 status
= nfs4_call_sync(client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
6714 dprintk("%s: returned status = %d\n", __func__
, status
);
6718 int nfs4_proc_fs_locations(struct rpc_clnt
*client
, struct inode
*dir
,
6719 const struct qstr
*name
,
6720 struct nfs4_fs_locations
*fs_locations
,
6723 struct nfs4_exception exception
= { };
6726 err
= _nfs4_proc_fs_locations(client
, dir
, name
,
6727 fs_locations
, page
);
6728 trace_nfs4_get_fs_locations(dir
, name
, err
);
6729 err
= nfs4_handle_exception(NFS_SERVER(dir
), err
,
6731 } while (exception
.retry
);
6736 * This operation also signals the server that this client is
6737 * performing migration recovery. The server can stop returning
6738 * NFS4ERR_LEASE_MOVED to this client. A RENEW operation is
6739 * appended to this compound to identify the client ID which is
6740 * performing recovery.
6742 static int _nfs40_proc_get_locations(struct inode
*inode
,
6743 struct nfs4_fs_locations
*locations
,
6744 struct page
*page
, struct rpc_cred
*cred
)
6746 struct nfs_server
*server
= NFS_SERVER(inode
);
6747 struct rpc_clnt
*clnt
= server
->client
;
6749 [0] = FATTR4_WORD0_FSID
| FATTR4_WORD0_FS_LOCATIONS
,
6751 struct nfs4_fs_locations_arg args
= {
6752 .clientid
= server
->nfs_client
->cl_clientid
,
6753 .fh
= NFS_FH(inode
),
6756 .migration
= 1, /* skip LOOKUP */
6757 .renew
= 1, /* append RENEW */
6759 struct nfs4_fs_locations_res res
= {
6760 .fs_locations
= locations
,
6764 struct rpc_message msg
= {
6765 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_FS_LOCATIONS
],
6770 unsigned long now
= jiffies
;
6773 nfs_fattr_init(&locations
->fattr
);
6774 locations
->server
= server
;
6775 locations
->nlocations
= 0;
6777 nfs4_init_sequence(&args
.seq_args
, &res
.seq_res
, 0);
6778 nfs4_set_sequence_privileged(&args
.seq_args
);
6779 status
= nfs4_call_sync_sequence(clnt
, server
, &msg
,
6780 &args
.seq_args
, &res
.seq_res
);
6784 renew_lease(server
, now
);
6788 #ifdef CONFIG_NFS_V4_1
6791 * This operation also signals the server that this client is
6792 * performing migration recovery. The server can stop asserting
6793 * SEQ4_STATUS_LEASE_MOVED for this client. The client ID
6794 * performing this operation is identified in the SEQUENCE
6795 * operation in this compound.
6797 * When the client supports GETATTR(fs_locations_info), it can
6798 * be plumbed in here.
6800 static int _nfs41_proc_get_locations(struct inode
*inode
,
6801 struct nfs4_fs_locations
*locations
,
6802 struct page
*page
, struct rpc_cred
*cred
)
6804 struct nfs_server
*server
= NFS_SERVER(inode
);
6805 struct rpc_clnt
*clnt
= server
->client
;
6807 [0] = FATTR4_WORD0_FSID
| FATTR4_WORD0_FS_LOCATIONS
,
6809 struct nfs4_fs_locations_arg args
= {
6810 .fh
= NFS_FH(inode
),
6813 .migration
= 1, /* skip LOOKUP */
6815 struct nfs4_fs_locations_res res
= {
6816 .fs_locations
= locations
,
6819 struct rpc_message msg
= {
6820 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_FS_LOCATIONS
],
6827 nfs_fattr_init(&locations
->fattr
);
6828 locations
->server
= server
;
6829 locations
->nlocations
= 0;
6831 nfs4_init_sequence(&args
.seq_args
, &res
.seq_res
, 0);
6832 nfs4_set_sequence_privileged(&args
.seq_args
);
6833 status
= nfs4_call_sync_sequence(clnt
, server
, &msg
,
6834 &args
.seq_args
, &res
.seq_res
);
6835 if (status
== NFS4_OK
&&
6836 res
.seq_res
.sr_status_flags
& SEQ4_STATUS_LEASE_MOVED
)
6837 status
= -NFS4ERR_LEASE_MOVED
;
6841 #endif /* CONFIG_NFS_V4_1 */
6844 * nfs4_proc_get_locations - discover locations for a migrated FSID
6845 * @inode: inode on FSID that is migrating
6846 * @locations: result of query
6848 * @cred: credential to use for this operation
6850 * Returns NFS4_OK on success, a negative NFS4ERR status code if the
6851 * operation failed, or a negative errno if a local error occurred.
6853 * On success, "locations" is filled in, but if the server has
6854 * no locations information, NFS_ATTR_FATTR_V4_LOCATIONS is not
6857 * -NFS4ERR_LEASE_MOVED is returned if the server still has leases
6858 * from this client that require migration recovery.
6860 int nfs4_proc_get_locations(struct inode
*inode
,
6861 struct nfs4_fs_locations
*locations
,
6862 struct page
*page
, struct rpc_cred
*cred
)
6864 struct nfs_server
*server
= NFS_SERVER(inode
);
6865 struct nfs_client
*clp
= server
->nfs_client
;
6866 const struct nfs4_mig_recovery_ops
*ops
=
6867 clp
->cl_mvops
->mig_recovery_ops
;
6868 struct nfs4_exception exception
= { };
6871 dprintk("%s: FSID %llx:%llx on \"%s\"\n", __func__
,
6872 (unsigned long long)server
->fsid
.major
,
6873 (unsigned long long)server
->fsid
.minor
,
6875 nfs_display_fhandle(NFS_FH(inode
), __func__
);
6878 status
= ops
->get_locations(inode
, locations
, page
, cred
);
6879 if (status
!= -NFS4ERR_DELAY
)
6881 nfs4_handle_exception(server
, status
, &exception
);
6882 } while (exception
.retry
);
6887 * This operation also signals the server that this client is
6888 * performing "lease moved" recovery. The server can stop
6889 * returning NFS4ERR_LEASE_MOVED to this client. A RENEW operation
6890 * is appended to this compound to identify the client ID which is
6891 * performing recovery.
6893 static int _nfs40_proc_fsid_present(struct inode
*inode
, struct rpc_cred
*cred
)
6895 struct nfs_server
*server
= NFS_SERVER(inode
);
6896 struct nfs_client
*clp
= NFS_SERVER(inode
)->nfs_client
;
6897 struct rpc_clnt
*clnt
= server
->client
;
6898 struct nfs4_fsid_present_arg args
= {
6899 .fh
= NFS_FH(inode
),
6900 .clientid
= clp
->cl_clientid
,
6901 .renew
= 1, /* append RENEW */
6903 struct nfs4_fsid_present_res res
= {
6906 struct rpc_message msg
= {
6907 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_FSID_PRESENT
],
6912 unsigned long now
= jiffies
;
6915 res
.fh
= nfs_alloc_fhandle();
6919 nfs4_init_sequence(&args
.seq_args
, &res
.seq_res
, 0);
6920 nfs4_set_sequence_privileged(&args
.seq_args
);
6921 status
= nfs4_call_sync_sequence(clnt
, server
, &msg
,
6922 &args
.seq_args
, &res
.seq_res
);
6923 nfs_free_fhandle(res
.fh
);
6927 do_renew_lease(clp
, now
);
6931 #ifdef CONFIG_NFS_V4_1
6934 * This operation also signals the server that this client is
6935 * performing "lease moved" recovery. The server can stop asserting
6936 * SEQ4_STATUS_LEASE_MOVED for this client. The client ID performing
6937 * this operation is identified in the SEQUENCE operation in this
6940 static int _nfs41_proc_fsid_present(struct inode
*inode
, struct rpc_cred
*cred
)
6942 struct nfs_server
*server
= NFS_SERVER(inode
);
6943 struct rpc_clnt
*clnt
= server
->client
;
6944 struct nfs4_fsid_present_arg args
= {
6945 .fh
= NFS_FH(inode
),
6947 struct nfs4_fsid_present_res res
= {
6949 struct rpc_message msg
= {
6950 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_FSID_PRESENT
],
6957 res
.fh
= nfs_alloc_fhandle();
6961 nfs4_init_sequence(&args
.seq_args
, &res
.seq_res
, 0);
6962 nfs4_set_sequence_privileged(&args
.seq_args
);
6963 status
= nfs4_call_sync_sequence(clnt
, server
, &msg
,
6964 &args
.seq_args
, &res
.seq_res
);
6965 nfs_free_fhandle(res
.fh
);
6966 if (status
== NFS4_OK
&&
6967 res
.seq_res
.sr_status_flags
& SEQ4_STATUS_LEASE_MOVED
)
6968 status
= -NFS4ERR_LEASE_MOVED
;
6972 #endif /* CONFIG_NFS_V4_1 */
6975 * nfs4_proc_fsid_present - Is this FSID present or absent on server?
6976 * @inode: inode on FSID to check
6977 * @cred: credential to use for this operation
6979 * Server indicates whether the FSID is present, moved, or not
6980 * recognized. This operation is necessary to clear a LEASE_MOVED
6981 * condition for this client ID.
6983 * Returns NFS4_OK if the FSID is present on this server,
6984 * -NFS4ERR_MOVED if the FSID is no longer present, a negative
6985 * NFS4ERR code if some error occurred on the server, or a
6986 * negative errno if a local failure occurred.
6988 int nfs4_proc_fsid_present(struct inode
*inode
, struct rpc_cred
*cred
)
6990 struct nfs_server
*server
= NFS_SERVER(inode
);
6991 struct nfs_client
*clp
= server
->nfs_client
;
6992 const struct nfs4_mig_recovery_ops
*ops
=
6993 clp
->cl_mvops
->mig_recovery_ops
;
6994 struct nfs4_exception exception
= { };
6997 dprintk("%s: FSID %llx:%llx on \"%s\"\n", __func__
,
6998 (unsigned long long)server
->fsid
.major
,
6999 (unsigned long long)server
->fsid
.minor
,
7001 nfs_display_fhandle(NFS_FH(inode
), __func__
);
7004 status
= ops
->fsid_present(inode
, cred
);
7005 if (status
!= -NFS4ERR_DELAY
)
7007 nfs4_handle_exception(server
, status
, &exception
);
7008 } while (exception
.retry
);
7013 * If 'use_integrity' is true and the state managment nfs_client
7014 * cl_rpcclient is using krb5i/p, use the integrity protected cl_rpcclient
7015 * and the machine credential as per RFC3530bis and RFC5661 Security
7016 * Considerations sections. Otherwise, just use the user cred with the
7017 * filesystem's rpc_client.
7019 static int _nfs4_proc_secinfo(struct inode
*dir
, const struct qstr
*name
, struct nfs4_secinfo_flavors
*flavors
, bool use_integrity
)
7022 struct nfs4_secinfo_arg args
= {
7023 .dir_fh
= NFS_FH(dir
),
7026 struct nfs4_secinfo_res res
= {
7029 struct rpc_message msg
= {
7030 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SECINFO
],
7034 struct rpc_clnt
*clnt
= NFS_SERVER(dir
)->client
;
7035 struct rpc_cred
*cred
= NULL
;
7037 if (use_integrity
) {
7038 clnt
= NFS_SERVER(dir
)->nfs_client
->cl_rpcclient
;
7039 cred
= nfs4_get_clid_cred(NFS_SERVER(dir
)->nfs_client
);
7040 msg
.rpc_cred
= cred
;
7043 dprintk("NFS call secinfo %s\n", name
->name
);
7045 nfs4_state_protect(NFS_SERVER(dir
)->nfs_client
,
7046 NFS_SP4_MACH_CRED_SECINFO
, &clnt
, &msg
);
7048 status
= nfs4_call_sync(clnt
, NFS_SERVER(dir
), &msg
, &args
.seq_args
,
7050 dprintk("NFS reply secinfo: %d\n", status
);
7058 int nfs4_proc_secinfo(struct inode
*dir
, const struct qstr
*name
,
7059 struct nfs4_secinfo_flavors
*flavors
)
7061 struct nfs4_exception exception
= { };
7064 err
= -NFS4ERR_WRONGSEC
;
7066 /* try to use integrity protection with machine cred */
7067 if (_nfs4_is_integrity_protected(NFS_SERVER(dir
)->nfs_client
))
7068 err
= _nfs4_proc_secinfo(dir
, name
, flavors
, true);
7071 * if unable to use integrity protection, or SECINFO with
7072 * integrity protection returns NFS4ERR_WRONGSEC (which is
7073 * disallowed by spec, but exists in deployed servers) use
7074 * the current filesystem's rpc_client and the user cred.
7076 if (err
== -NFS4ERR_WRONGSEC
)
7077 err
= _nfs4_proc_secinfo(dir
, name
, flavors
, false);
7079 trace_nfs4_secinfo(dir
, name
, err
);
7080 err
= nfs4_handle_exception(NFS_SERVER(dir
), err
,
7082 } while (exception
.retry
);
7086 #ifdef CONFIG_NFS_V4_1
7088 * Check the exchange flags returned by the server for invalid flags, having
7089 * both PNFS and NON_PNFS flags set, and not having one of NON_PNFS, PNFS, or
7092 static int nfs4_check_cl_exchange_flags(u32 flags
)
7094 if (flags
& ~EXCHGID4_FLAG_MASK_R
)
7096 if ((flags
& EXCHGID4_FLAG_USE_PNFS_MDS
) &&
7097 (flags
& EXCHGID4_FLAG_USE_NON_PNFS
))
7099 if (!(flags
& (EXCHGID4_FLAG_MASK_PNFS
)))
7103 return -NFS4ERR_INVAL
;
7107 nfs41_same_server_scope(struct nfs41_server_scope
*a
,
7108 struct nfs41_server_scope
*b
)
7110 if (a
->server_scope_sz
!= b
->server_scope_sz
)
7112 return memcmp(a
->server_scope
, b
->server_scope
, a
->server_scope_sz
) == 0;
7116 nfs4_bind_one_conn_to_session_done(struct rpc_task
*task
, void *calldata
)
7120 static const struct rpc_call_ops nfs4_bind_one_conn_to_session_ops
= {
7121 .rpc_call_done
= &nfs4_bind_one_conn_to_session_done
,
7125 * nfs4_proc_bind_one_conn_to_session()
7127 * The 4.1 client currently uses the same TCP connection for the
7128 * fore and backchannel.
7131 int nfs4_proc_bind_one_conn_to_session(struct rpc_clnt
*clnt
,
7132 struct rpc_xprt
*xprt
,
7133 struct nfs_client
*clp
,
7134 struct rpc_cred
*cred
)
7137 struct nfs41_bind_conn_to_session_args args
= {
7139 .dir
= NFS4_CDFC4_FORE_OR_BOTH
,
7141 struct nfs41_bind_conn_to_session_res res
;
7142 struct rpc_message msg
= {
7144 &nfs4_procedures
[NFSPROC4_CLNT_BIND_CONN_TO_SESSION
],
7149 struct rpc_task_setup task_setup_data
= {
7152 .callback_ops
= &nfs4_bind_one_conn_to_session_ops
,
7153 .rpc_message
= &msg
,
7154 .flags
= RPC_TASK_TIMEOUT
,
7156 struct rpc_task
*task
;
7158 dprintk("--> %s\n", __func__
);
7160 nfs4_copy_sessionid(&args
.sessionid
, &clp
->cl_session
->sess_id
);
7161 if (!(clp
->cl_session
->flags
& SESSION4_BACK_CHAN
))
7162 args
.dir
= NFS4_CDFC4_FORE
;
7164 /* Do not set the backchannel flag unless this is clnt->cl_xprt */
7165 if (xprt
!= rcu_access_pointer(clnt
->cl_xprt
))
7166 args
.dir
= NFS4_CDFC4_FORE
;
7168 task
= rpc_run_task(&task_setup_data
);
7169 if (!IS_ERR(task
)) {
7170 status
= task
->tk_status
;
7173 status
= PTR_ERR(task
);
7174 trace_nfs4_bind_conn_to_session(clp
, status
);
7176 if (memcmp(res
.sessionid
.data
,
7177 clp
->cl_session
->sess_id
.data
, NFS4_MAX_SESSIONID_LEN
)) {
7178 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",
7188 if (res
.use_conn_in_rdma_mode
!= args
.use_conn_in_rdma_mode
) {
7189 dprintk("NFS: %s: Server returned RDMA mode = true\n",
7196 dprintk("<-- %s status= %d\n", __func__
, status
);
7200 struct rpc_bind_conn_calldata
{
7201 struct nfs_client
*clp
;
7202 struct rpc_cred
*cred
;
7206 nfs4_proc_bind_conn_to_session_callback(struct rpc_clnt
*clnt
,
7207 struct rpc_xprt
*xprt
,
7210 struct rpc_bind_conn_calldata
*p
= calldata
;
7212 return nfs4_proc_bind_one_conn_to_session(clnt
, xprt
, p
->clp
, p
->cred
);
7215 int nfs4_proc_bind_conn_to_session(struct nfs_client
*clp
, struct rpc_cred
*cred
)
7217 struct rpc_bind_conn_calldata data
= {
7221 return rpc_clnt_iterate_for_each_xprt(clp
->cl_rpcclient
,
7222 nfs4_proc_bind_conn_to_session_callback
, &data
);
7226 * Minimum set of SP4_MACH_CRED operations from RFC 5661 in the enforce map
7227 * and operations we'd like to see to enable certain features in the allow map
7229 static const struct nfs41_state_protection nfs4_sp4_mach_cred_request
= {
7230 .how
= SP4_MACH_CRED
,
7231 .enforce
.u
.words
= {
7232 [1] = 1 << (OP_BIND_CONN_TO_SESSION
- 32) |
7233 1 << (OP_EXCHANGE_ID
- 32) |
7234 1 << (OP_CREATE_SESSION
- 32) |
7235 1 << (OP_DESTROY_SESSION
- 32) |
7236 1 << (OP_DESTROY_CLIENTID
- 32)
7239 [0] = 1 << (OP_CLOSE
) |
7240 1 << (OP_OPEN_DOWNGRADE
) |
7242 1 << (OP_DELEGRETURN
) |
7244 [1] = 1 << (OP_SECINFO
- 32) |
7245 1 << (OP_SECINFO_NO_NAME
- 32) |
7246 1 << (OP_LAYOUTRETURN
- 32) |
7247 1 << (OP_TEST_STATEID
- 32) |
7248 1 << (OP_FREE_STATEID
- 32) |
7249 1 << (OP_WRITE
- 32)
7254 * Select the state protection mode for client `clp' given the server results
7255 * from exchange_id in `sp'.
7257 * Returns 0 on success, negative errno otherwise.
7259 static int nfs4_sp4_select_mode(struct nfs_client
*clp
,
7260 struct nfs41_state_protection
*sp
)
7262 static const u32 supported_enforce
[NFS4_OP_MAP_NUM_WORDS
] = {
7263 [1] = 1 << (OP_BIND_CONN_TO_SESSION
- 32) |
7264 1 << (OP_EXCHANGE_ID
- 32) |
7265 1 << (OP_CREATE_SESSION
- 32) |
7266 1 << (OP_DESTROY_SESSION
- 32) |
7267 1 << (OP_DESTROY_CLIENTID
- 32)
7271 if (sp
->how
== SP4_MACH_CRED
) {
7272 /* Print state protect result */
7273 dfprintk(MOUNT
, "Server SP4_MACH_CRED support:\n");
7274 for (i
= 0; i
<= LAST_NFS4_OP
; i
++) {
7275 if (test_bit(i
, sp
->enforce
.u
.longs
))
7276 dfprintk(MOUNT
, " enforce op %d\n", i
);
7277 if (test_bit(i
, sp
->allow
.u
.longs
))
7278 dfprintk(MOUNT
, " allow op %d\n", i
);
7281 /* make sure nothing is on enforce list that isn't supported */
7282 for (i
= 0; i
< NFS4_OP_MAP_NUM_WORDS
; i
++) {
7283 if (sp
->enforce
.u
.words
[i
] & ~supported_enforce
[i
]) {
7284 dfprintk(MOUNT
, "sp4_mach_cred: disabled\n");
7290 * Minimal mode - state operations are allowed to use machine
7291 * credential. Note this already happens by default, so the
7292 * client doesn't have to do anything more than the negotiation.
7294 * NOTE: we don't care if EXCHANGE_ID is in the list -
7295 * we're already using the machine cred for exchange_id
7296 * and will never use a different cred.
7298 if (test_bit(OP_BIND_CONN_TO_SESSION
, sp
->enforce
.u
.longs
) &&
7299 test_bit(OP_CREATE_SESSION
, sp
->enforce
.u
.longs
) &&
7300 test_bit(OP_DESTROY_SESSION
, sp
->enforce
.u
.longs
) &&
7301 test_bit(OP_DESTROY_CLIENTID
, sp
->enforce
.u
.longs
)) {
7302 dfprintk(MOUNT
, "sp4_mach_cred:\n");
7303 dfprintk(MOUNT
, " minimal mode enabled\n");
7304 set_bit(NFS_SP4_MACH_CRED_MINIMAL
, &clp
->cl_sp4_flags
);
7306 dfprintk(MOUNT
, "sp4_mach_cred: disabled\n");
7310 if (test_bit(OP_CLOSE
, sp
->allow
.u
.longs
) &&
7311 test_bit(OP_OPEN_DOWNGRADE
, sp
->allow
.u
.longs
) &&
7312 test_bit(OP_DELEGRETURN
, sp
->allow
.u
.longs
) &&
7313 test_bit(OP_LOCKU
, sp
->allow
.u
.longs
)) {
7314 dfprintk(MOUNT
, " cleanup mode enabled\n");
7315 set_bit(NFS_SP4_MACH_CRED_CLEANUP
, &clp
->cl_sp4_flags
);
7318 if (test_bit(OP_LAYOUTRETURN
, sp
->allow
.u
.longs
)) {
7319 dfprintk(MOUNT
, " pnfs cleanup mode enabled\n");
7320 set_bit(NFS_SP4_MACH_CRED_PNFS_CLEANUP
,
7321 &clp
->cl_sp4_flags
);
7324 if (test_bit(OP_SECINFO
, sp
->allow
.u
.longs
) &&
7325 test_bit(OP_SECINFO_NO_NAME
, sp
->allow
.u
.longs
)) {
7326 dfprintk(MOUNT
, " secinfo mode enabled\n");
7327 set_bit(NFS_SP4_MACH_CRED_SECINFO
, &clp
->cl_sp4_flags
);
7330 if (test_bit(OP_TEST_STATEID
, sp
->allow
.u
.longs
) &&
7331 test_bit(OP_FREE_STATEID
, sp
->allow
.u
.longs
)) {
7332 dfprintk(MOUNT
, " stateid mode enabled\n");
7333 set_bit(NFS_SP4_MACH_CRED_STATEID
, &clp
->cl_sp4_flags
);
7336 if (test_bit(OP_WRITE
, sp
->allow
.u
.longs
)) {
7337 dfprintk(MOUNT
, " write mode enabled\n");
7338 set_bit(NFS_SP4_MACH_CRED_WRITE
, &clp
->cl_sp4_flags
);
7341 if (test_bit(OP_COMMIT
, sp
->allow
.u
.longs
)) {
7342 dfprintk(MOUNT
, " commit mode enabled\n");
7343 set_bit(NFS_SP4_MACH_CRED_COMMIT
, &clp
->cl_sp4_flags
);
7350 struct nfs41_exchange_id_data
{
7351 struct nfs41_exchange_id_res res
;
7352 struct nfs41_exchange_id_args args
;
7353 struct rpc_xprt
*xprt
;
7357 static void nfs4_exchange_id_done(struct rpc_task
*task
, void *data
)
7359 struct nfs41_exchange_id_data
*cdata
=
7360 (struct nfs41_exchange_id_data
*)data
;
7361 struct nfs_client
*clp
= cdata
->args
.client
;
7362 int status
= task
->tk_status
;
7364 trace_nfs4_exchange_id(clp
, status
);
7367 status
= nfs4_check_cl_exchange_flags(cdata
->res
.flags
);
7369 if (cdata
->xprt
&& status
== 0) {
7370 status
= nfs4_detect_session_trunking(clp
, &cdata
->res
,
7376 status
= nfs4_sp4_select_mode(clp
, &cdata
->res
.state_protect
);
7379 clp
->cl_clientid
= cdata
->res
.clientid
;
7380 clp
->cl_exchange_flags
= cdata
->res
.flags
;
7381 /* Client ID is not confirmed */
7382 if (!(cdata
->res
.flags
& EXCHGID4_FLAG_CONFIRMED_R
)) {
7383 clear_bit(NFS4_SESSION_ESTABLISHED
,
7384 &clp
->cl_session
->session_state
);
7385 clp
->cl_seqid
= cdata
->res
.seqid
;
7388 kfree(clp
->cl_serverowner
);
7389 clp
->cl_serverowner
= cdata
->res
.server_owner
;
7390 cdata
->res
.server_owner
= NULL
;
7392 /* use the most recent implementation id */
7393 kfree(clp
->cl_implid
);
7394 clp
->cl_implid
= cdata
->res
.impl_id
;
7395 cdata
->res
.impl_id
= NULL
;
7397 if (clp
->cl_serverscope
!= NULL
&&
7398 !nfs41_same_server_scope(clp
->cl_serverscope
,
7399 cdata
->res
.server_scope
)) {
7400 dprintk("%s: server_scope mismatch detected\n",
7402 set_bit(NFS4CLNT_SERVER_SCOPE_MISMATCH
, &clp
->cl_state
);
7403 kfree(clp
->cl_serverscope
);
7404 clp
->cl_serverscope
= NULL
;
7407 if (clp
->cl_serverscope
== NULL
) {
7408 clp
->cl_serverscope
= cdata
->res
.server_scope
;
7409 cdata
->res
.server_scope
= NULL
;
7411 /* Save the EXCHANGE_ID verifier session trunk tests */
7412 memcpy(clp
->cl_confirm
.data
, cdata
->args
.verifier
->data
,
7413 sizeof(clp
->cl_confirm
.data
));
7416 cdata
->rpc_status
= status
;
7420 static void nfs4_exchange_id_release(void *data
)
7422 struct nfs41_exchange_id_data
*cdata
=
7423 (struct nfs41_exchange_id_data
*)data
;
7426 xprt_put(cdata
->xprt
);
7427 rpc_clnt_xprt_switch_put(cdata
->args
.client
->cl_rpcclient
);
7429 nfs_put_client(cdata
->args
.client
);
7430 kfree(cdata
->res
.impl_id
);
7431 kfree(cdata
->res
.server_scope
);
7432 kfree(cdata
->res
.server_owner
);
7436 static const struct rpc_call_ops nfs4_exchange_id_call_ops
= {
7437 .rpc_call_done
= nfs4_exchange_id_done
,
7438 .rpc_release
= nfs4_exchange_id_release
,
7442 * _nfs4_proc_exchange_id()
7444 * Wrapper for EXCHANGE_ID operation.
7446 static int _nfs4_proc_exchange_id(struct nfs_client
*clp
, struct rpc_cred
*cred
,
7447 u32 sp4_how
, struct rpc_xprt
*xprt
)
7449 nfs4_verifier verifier
;
7450 struct rpc_message msg
= {
7451 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_EXCHANGE_ID
],
7454 struct rpc_task_setup task_setup_data
= {
7455 .rpc_client
= clp
->cl_rpcclient
,
7456 .callback_ops
= &nfs4_exchange_id_call_ops
,
7457 .rpc_message
= &msg
,
7458 .flags
= RPC_TASK_ASYNC
| RPC_TASK_TIMEOUT
,
7460 struct nfs41_exchange_id_data
*calldata
;
7461 struct rpc_task
*task
;
7464 if (!atomic_inc_not_zero(&clp
->cl_count
))
7468 calldata
= kzalloc(sizeof(*calldata
), GFP_NOFS
);
7473 nfs4_init_boot_verifier(clp
, &verifier
);
7475 status
= nfs4_init_uniform_client_string(clp
);
7479 dprintk("NFS call exchange_id auth=%s, '%s'\n",
7480 clp
->cl_rpcclient
->cl_auth
->au_ops
->au_name
,
7483 calldata
->res
.server_owner
= kzalloc(sizeof(struct nfs41_server_owner
),
7486 if (unlikely(calldata
->res
.server_owner
== NULL
))
7489 calldata
->res
.server_scope
= kzalloc(sizeof(struct nfs41_server_scope
),
7491 if (unlikely(calldata
->res
.server_scope
== NULL
))
7492 goto out_server_owner
;
7494 calldata
->res
.impl_id
= kzalloc(sizeof(struct nfs41_impl_id
), GFP_NOFS
);
7495 if (unlikely(calldata
->res
.impl_id
== NULL
))
7496 goto out_server_scope
;
7500 calldata
->args
.state_protect
.how
= SP4_NONE
;
7504 calldata
->args
.state_protect
= nfs4_sp4_mach_cred_request
;
7514 calldata
->xprt
= xprt
;
7515 task_setup_data
.rpc_xprt
= xprt
;
7516 task_setup_data
.flags
=
7517 RPC_TASK_SOFT
|RPC_TASK_SOFTCONN
|RPC_TASK_ASYNC
;
7518 calldata
->args
.verifier
= &clp
->cl_confirm
;
7520 calldata
->args
.verifier
= &verifier
;
7522 calldata
->args
.client
= clp
;
7523 #ifdef CONFIG_NFS_V4_1_MIGRATION
7524 calldata
->args
.flags
= EXCHGID4_FLAG_SUPP_MOVED_REFER
|
7525 EXCHGID4_FLAG_BIND_PRINC_STATEID
|
7526 EXCHGID4_FLAG_SUPP_MOVED_MIGR
,
7528 calldata
->args
.flags
= EXCHGID4_FLAG_SUPP_MOVED_REFER
|
7529 EXCHGID4_FLAG_BIND_PRINC_STATEID
,
7531 msg
.rpc_argp
= &calldata
->args
;
7532 msg
.rpc_resp
= &calldata
->res
;
7533 task_setup_data
.callback_data
= calldata
;
7535 task
= rpc_run_task(&task_setup_data
);
7537 return PTR_ERR(task
);
7540 status
= rpc_wait_for_completion_task(task
);
7542 status
= calldata
->rpc_status
;
7543 } else /* session trunking test */
7544 status
= calldata
->rpc_status
;
7548 if (clp
->cl_implid
!= NULL
)
7549 dprintk("NFS reply exchange_id: Server Implementation ID: "
7550 "domain: %s, name: %s, date: %llu,%u\n",
7551 clp
->cl_implid
->domain
, clp
->cl_implid
->name
,
7552 clp
->cl_implid
->date
.seconds
,
7553 clp
->cl_implid
->date
.nseconds
);
7554 dprintk("NFS reply exchange_id: %d\n", status
);
7558 kfree(calldata
->res
.impl_id
);
7560 kfree(calldata
->res
.server_scope
);
7562 kfree(calldata
->res
.server_owner
);
7565 nfs_put_client(clp
);
7570 * nfs4_proc_exchange_id()
7572 * Returns zero, a negative errno, or a negative NFS4ERR status code.
7574 * Since the clientid has expired, all compounds using sessions
7575 * associated with the stale clientid will be returning
7576 * NFS4ERR_BADSESSION in the sequence operation, and will therefore
7577 * be in some phase of session reset.
7579 * Will attempt to negotiate SP4_MACH_CRED if krb5i / krb5p auth is used.
7581 int nfs4_proc_exchange_id(struct nfs_client
*clp
, struct rpc_cred
*cred
)
7583 rpc_authflavor_t authflavor
= clp
->cl_rpcclient
->cl_auth
->au_flavor
;
7586 /* try SP4_MACH_CRED if krb5i/p */
7587 if (authflavor
== RPC_AUTH_GSS_KRB5I
||
7588 authflavor
== RPC_AUTH_GSS_KRB5P
) {
7589 status
= _nfs4_proc_exchange_id(clp
, cred
, SP4_MACH_CRED
, NULL
);
7595 return _nfs4_proc_exchange_id(clp
, cred
, SP4_NONE
, NULL
);
7599 * nfs4_test_session_trunk
7601 * This is an add_xprt_test() test function called from
7602 * rpc_clnt_setup_test_and_add_xprt.
7604 * The rpc_xprt_switch is referrenced by rpc_clnt_setup_test_and_add_xprt
7605 * and is dereferrenced in nfs4_exchange_id_release
7607 * Upon success, add the new transport to the rpc_clnt
7609 * @clnt: struct rpc_clnt to get new transport
7610 * @xprt: the rpc_xprt to test
7611 * @data: call data for _nfs4_proc_exchange_id.
7613 int nfs4_test_session_trunk(struct rpc_clnt
*clnt
, struct rpc_xprt
*xprt
,
7616 struct nfs4_add_xprt_data
*adata
= (struct nfs4_add_xprt_data
*)data
;
7619 dprintk("--> %s try %s\n", __func__
,
7620 xprt
->address_strings
[RPC_DISPLAY_ADDR
]);
7622 sp4_how
= (adata
->clp
->cl_sp4_flags
== 0 ? SP4_NONE
: SP4_MACH_CRED
);
7624 /* Test connection for session trunking. Async exchange_id call */
7625 return _nfs4_proc_exchange_id(adata
->clp
, adata
->cred
, sp4_how
, xprt
);
7627 EXPORT_SYMBOL_GPL(nfs4_test_session_trunk
);
7629 static int _nfs4_proc_destroy_clientid(struct nfs_client
*clp
,
7630 struct rpc_cred
*cred
)
7632 struct rpc_message msg
= {
7633 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_DESTROY_CLIENTID
],
7639 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
7640 trace_nfs4_destroy_clientid(clp
, status
);
7642 dprintk("NFS: Got error %d from the server %s on "
7643 "DESTROY_CLIENTID.", status
, clp
->cl_hostname
);
7647 static int nfs4_proc_destroy_clientid(struct nfs_client
*clp
,
7648 struct rpc_cred
*cred
)
7653 for (loop
= NFS4_MAX_LOOP_ON_RECOVER
; loop
!= 0; loop
--) {
7654 ret
= _nfs4_proc_destroy_clientid(clp
, cred
);
7656 case -NFS4ERR_DELAY
:
7657 case -NFS4ERR_CLIENTID_BUSY
:
7667 int nfs4_destroy_clientid(struct nfs_client
*clp
)
7669 struct rpc_cred
*cred
;
7672 if (clp
->cl_mvops
->minor_version
< 1)
7674 if (clp
->cl_exchange_flags
== 0)
7676 if (clp
->cl_preserve_clid
)
7678 cred
= nfs4_get_clid_cred(clp
);
7679 ret
= nfs4_proc_destroy_clientid(clp
, cred
);
7684 case -NFS4ERR_STALE_CLIENTID
:
7685 clp
->cl_exchange_flags
= 0;
7691 struct nfs4_get_lease_time_data
{
7692 struct nfs4_get_lease_time_args
*args
;
7693 struct nfs4_get_lease_time_res
*res
;
7694 struct nfs_client
*clp
;
7697 static void nfs4_get_lease_time_prepare(struct rpc_task
*task
,
7700 struct nfs4_get_lease_time_data
*data
=
7701 (struct nfs4_get_lease_time_data
*)calldata
;
7703 dprintk("--> %s\n", __func__
);
7704 /* just setup sequence, do not trigger session recovery
7705 since we're invoked within one */
7706 nfs4_setup_sequence(data
->clp
,
7707 &data
->args
->la_seq_args
,
7708 &data
->res
->lr_seq_res
,
7710 dprintk("<-- %s\n", __func__
);
7714 * Called from nfs4_state_manager thread for session setup, so don't recover
7715 * from sequence operation or clientid errors.
7717 static void nfs4_get_lease_time_done(struct rpc_task
*task
, void *calldata
)
7719 struct nfs4_get_lease_time_data
*data
=
7720 (struct nfs4_get_lease_time_data
*)calldata
;
7722 dprintk("--> %s\n", __func__
);
7723 if (!nfs41_sequence_done(task
, &data
->res
->lr_seq_res
))
7725 switch (task
->tk_status
) {
7726 case -NFS4ERR_DELAY
:
7727 case -NFS4ERR_GRACE
:
7728 dprintk("%s Retry: tk_status %d\n", __func__
, task
->tk_status
);
7729 rpc_delay(task
, NFS4_POLL_RETRY_MIN
);
7730 task
->tk_status
= 0;
7732 case -NFS4ERR_RETRY_UNCACHED_REP
:
7733 rpc_restart_call_prepare(task
);
7736 dprintk("<-- %s\n", __func__
);
7739 static const struct rpc_call_ops nfs4_get_lease_time_ops
= {
7740 .rpc_call_prepare
= nfs4_get_lease_time_prepare
,
7741 .rpc_call_done
= nfs4_get_lease_time_done
,
7744 int nfs4_proc_get_lease_time(struct nfs_client
*clp
, struct nfs_fsinfo
*fsinfo
)
7746 struct rpc_task
*task
;
7747 struct nfs4_get_lease_time_args args
;
7748 struct nfs4_get_lease_time_res res
= {
7749 .lr_fsinfo
= fsinfo
,
7751 struct nfs4_get_lease_time_data data
= {
7756 struct rpc_message msg
= {
7757 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GET_LEASE_TIME
],
7761 struct rpc_task_setup task_setup
= {
7762 .rpc_client
= clp
->cl_rpcclient
,
7763 .rpc_message
= &msg
,
7764 .callback_ops
= &nfs4_get_lease_time_ops
,
7765 .callback_data
= &data
,
7766 .flags
= RPC_TASK_TIMEOUT
,
7770 nfs4_init_sequence(&args
.la_seq_args
, &res
.lr_seq_res
, 0);
7771 nfs4_set_sequence_privileged(&args
.la_seq_args
);
7772 dprintk("--> %s\n", __func__
);
7773 task
= rpc_run_task(&task_setup
);
7776 status
= PTR_ERR(task
);
7778 status
= task
->tk_status
;
7781 dprintk("<-- %s return %d\n", __func__
, status
);
7787 * Initialize the values to be used by the client in CREATE_SESSION
7788 * If nfs4_init_session set the fore channel request and response sizes,
7791 * Set the back channel max_resp_sz_cached to zero to force the client to
7792 * always set csa_cachethis to FALSE because the current implementation
7793 * of the back channel DRC only supports caching the CB_SEQUENCE operation.
7795 static void nfs4_init_channel_attrs(struct nfs41_create_session_args
*args
,
7796 struct rpc_clnt
*clnt
)
7798 unsigned int max_rqst_sz
, max_resp_sz
;
7799 unsigned int max_bc_payload
= rpc_max_bc_payload(clnt
);
7801 max_rqst_sz
= NFS_MAX_FILE_IO_SIZE
+ nfs41_maxwrite_overhead
;
7802 max_resp_sz
= NFS_MAX_FILE_IO_SIZE
+ nfs41_maxread_overhead
;
7804 /* Fore channel attributes */
7805 args
->fc_attrs
.max_rqst_sz
= max_rqst_sz
;
7806 args
->fc_attrs
.max_resp_sz
= max_resp_sz
;
7807 args
->fc_attrs
.max_ops
= NFS4_MAX_OPS
;
7808 args
->fc_attrs
.max_reqs
= max_session_slots
;
7810 dprintk("%s: Fore Channel : max_rqst_sz=%u max_resp_sz=%u "
7811 "max_ops=%u max_reqs=%u\n",
7813 args
->fc_attrs
.max_rqst_sz
, args
->fc_attrs
.max_resp_sz
,
7814 args
->fc_attrs
.max_ops
, args
->fc_attrs
.max_reqs
);
7816 /* Back channel attributes */
7817 args
->bc_attrs
.max_rqst_sz
= max_bc_payload
;
7818 args
->bc_attrs
.max_resp_sz
= max_bc_payload
;
7819 args
->bc_attrs
.max_resp_sz_cached
= 0;
7820 args
->bc_attrs
.max_ops
= NFS4_MAX_BACK_CHANNEL_OPS
;
7821 args
->bc_attrs
.max_reqs
= min_t(unsigned short, max_session_cb_slots
, 1);
7823 dprintk("%s: Back Channel : max_rqst_sz=%u max_resp_sz=%u "
7824 "max_resp_sz_cached=%u max_ops=%u max_reqs=%u\n",
7826 args
->bc_attrs
.max_rqst_sz
, args
->bc_attrs
.max_resp_sz
,
7827 args
->bc_attrs
.max_resp_sz_cached
, args
->bc_attrs
.max_ops
,
7828 args
->bc_attrs
.max_reqs
);
7831 static int nfs4_verify_fore_channel_attrs(struct nfs41_create_session_args
*args
,
7832 struct nfs41_create_session_res
*res
)
7834 struct nfs4_channel_attrs
*sent
= &args
->fc_attrs
;
7835 struct nfs4_channel_attrs
*rcvd
= &res
->fc_attrs
;
7837 if (rcvd
->max_resp_sz
> sent
->max_resp_sz
)
7840 * Our requested max_ops is the minimum we need; we're not
7841 * prepared to break up compounds into smaller pieces than that.
7842 * So, no point even trying to continue if the server won't
7845 if (rcvd
->max_ops
< sent
->max_ops
)
7847 if (rcvd
->max_reqs
== 0)
7849 if (rcvd
->max_reqs
> NFS4_MAX_SLOT_TABLE
)
7850 rcvd
->max_reqs
= NFS4_MAX_SLOT_TABLE
;
7854 static int nfs4_verify_back_channel_attrs(struct nfs41_create_session_args
*args
,
7855 struct nfs41_create_session_res
*res
)
7857 struct nfs4_channel_attrs
*sent
= &args
->bc_attrs
;
7858 struct nfs4_channel_attrs
*rcvd
= &res
->bc_attrs
;
7860 if (!(res
->flags
& SESSION4_BACK_CHAN
))
7862 if (rcvd
->max_rqst_sz
> sent
->max_rqst_sz
)
7864 if (rcvd
->max_resp_sz
< sent
->max_resp_sz
)
7866 if (rcvd
->max_resp_sz_cached
> sent
->max_resp_sz_cached
)
7868 if (rcvd
->max_ops
> sent
->max_ops
)
7870 if (rcvd
->max_reqs
> sent
->max_reqs
)
7876 static int nfs4_verify_channel_attrs(struct nfs41_create_session_args
*args
,
7877 struct nfs41_create_session_res
*res
)
7881 ret
= nfs4_verify_fore_channel_attrs(args
, res
);
7884 return nfs4_verify_back_channel_attrs(args
, res
);
7887 static void nfs4_update_session(struct nfs4_session
*session
,
7888 struct nfs41_create_session_res
*res
)
7890 nfs4_copy_sessionid(&session
->sess_id
, &res
->sessionid
);
7891 /* Mark client id and session as being confirmed */
7892 session
->clp
->cl_exchange_flags
|= EXCHGID4_FLAG_CONFIRMED_R
;
7893 set_bit(NFS4_SESSION_ESTABLISHED
, &session
->session_state
);
7894 session
->flags
= res
->flags
;
7895 memcpy(&session
->fc_attrs
, &res
->fc_attrs
, sizeof(session
->fc_attrs
));
7896 if (res
->flags
& SESSION4_BACK_CHAN
)
7897 memcpy(&session
->bc_attrs
, &res
->bc_attrs
,
7898 sizeof(session
->bc_attrs
));
7901 static int _nfs4_proc_create_session(struct nfs_client
*clp
,
7902 struct rpc_cred
*cred
)
7904 struct nfs4_session
*session
= clp
->cl_session
;
7905 struct nfs41_create_session_args args
= {
7907 .clientid
= clp
->cl_clientid
,
7908 .seqid
= clp
->cl_seqid
,
7909 .cb_program
= NFS4_CALLBACK
,
7911 struct nfs41_create_session_res res
;
7913 struct rpc_message msg
= {
7914 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_CREATE_SESSION
],
7921 nfs4_init_channel_attrs(&args
, clp
->cl_rpcclient
);
7922 args
.flags
= (SESSION4_PERSIST
| SESSION4_BACK_CHAN
);
7924 status
= rpc_call_sync(session
->clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
7925 trace_nfs4_create_session(clp
, status
);
7928 case -NFS4ERR_STALE_CLIENTID
:
7929 case -NFS4ERR_DELAY
:
7938 /* Verify the session's negotiated channel_attrs values */
7939 status
= nfs4_verify_channel_attrs(&args
, &res
);
7940 /* Increment the clientid slot sequence id */
7943 nfs4_update_session(session
, &res
);
7950 * Issues a CREATE_SESSION operation to the server.
7951 * It is the responsibility of the caller to verify the session is
7952 * expired before calling this routine.
7954 int nfs4_proc_create_session(struct nfs_client
*clp
, struct rpc_cred
*cred
)
7958 struct nfs4_session
*session
= clp
->cl_session
;
7960 dprintk("--> %s clp=%p session=%p\n", __func__
, clp
, session
);
7962 status
= _nfs4_proc_create_session(clp
, cred
);
7966 /* Init or reset the session slot tables */
7967 status
= nfs4_setup_session_slot_tables(session
);
7968 dprintk("slot table setup returned %d\n", status
);
7972 ptr
= (unsigned *)&session
->sess_id
.data
[0];
7973 dprintk("%s client>seqid %d sessionid %u:%u:%u:%u\n", __func__
,
7974 clp
->cl_seqid
, ptr
[0], ptr
[1], ptr
[2], ptr
[3]);
7976 dprintk("<-- %s\n", __func__
);
7981 * Issue the over-the-wire RPC DESTROY_SESSION.
7982 * The caller must serialize access to this routine.
7984 int nfs4_proc_destroy_session(struct nfs4_session
*session
,
7985 struct rpc_cred
*cred
)
7987 struct rpc_message msg
= {
7988 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_DESTROY_SESSION
],
7989 .rpc_argp
= session
,
7994 dprintk("--> nfs4_proc_destroy_session\n");
7996 /* session is still being setup */
7997 if (!test_and_clear_bit(NFS4_SESSION_ESTABLISHED
, &session
->session_state
))
8000 status
= rpc_call_sync(session
->clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
8001 trace_nfs4_destroy_session(session
->clp
, status
);
8004 dprintk("NFS: Got error %d from the server on DESTROY_SESSION. "
8005 "Session has been destroyed regardless...\n", status
);
8007 dprintk("<-- nfs4_proc_destroy_session\n");
8012 * Renew the cl_session lease.
8014 struct nfs4_sequence_data
{
8015 struct nfs_client
*clp
;
8016 struct nfs4_sequence_args args
;
8017 struct nfs4_sequence_res res
;
8020 static void nfs41_sequence_release(void *data
)
8022 struct nfs4_sequence_data
*calldata
= data
;
8023 struct nfs_client
*clp
= calldata
->clp
;
8025 if (atomic_read(&clp
->cl_count
) > 1)
8026 nfs4_schedule_state_renewal(clp
);
8027 nfs_put_client(clp
);
8031 static int nfs41_sequence_handle_errors(struct rpc_task
*task
, struct nfs_client
*clp
)
8033 switch(task
->tk_status
) {
8034 case -NFS4ERR_DELAY
:
8035 rpc_delay(task
, NFS4_POLL_RETRY_MAX
);
8038 nfs4_schedule_lease_recovery(clp
);
8043 static void nfs41_sequence_call_done(struct rpc_task
*task
, void *data
)
8045 struct nfs4_sequence_data
*calldata
= data
;
8046 struct nfs_client
*clp
= calldata
->clp
;
8048 if (!nfs41_sequence_done(task
, task
->tk_msg
.rpc_resp
))
8051 trace_nfs4_sequence(clp
, task
->tk_status
);
8052 if (task
->tk_status
< 0) {
8053 dprintk("%s ERROR %d\n", __func__
, task
->tk_status
);
8054 if (atomic_read(&clp
->cl_count
) == 1)
8057 if (nfs41_sequence_handle_errors(task
, clp
) == -EAGAIN
) {
8058 rpc_restart_call_prepare(task
);
8062 dprintk("%s rpc_cred %p\n", __func__
, task
->tk_msg
.rpc_cred
);
8064 dprintk("<-- %s\n", __func__
);
8067 static void nfs41_sequence_prepare(struct rpc_task
*task
, void *data
)
8069 struct nfs4_sequence_data
*calldata
= data
;
8070 struct nfs_client
*clp
= calldata
->clp
;
8071 struct nfs4_sequence_args
*args
;
8072 struct nfs4_sequence_res
*res
;
8074 args
= task
->tk_msg
.rpc_argp
;
8075 res
= task
->tk_msg
.rpc_resp
;
8077 nfs4_setup_sequence(clp
, args
, res
, task
);
8080 static const struct rpc_call_ops nfs41_sequence_ops
= {
8081 .rpc_call_done
= nfs41_sequence_call_done
,
8082 .rpc_call_prepare
= nfs41_sequence_prepare
,
8083 .rpc_release
= nfs41_sequence_release
,
8086 static struct rpc_task
*_nfs41_proc_sequence(struct nfs_client
*clp
,
8087 struct rpc_cred
*cred
,
8090 struct nfs4_sequence_data
*calldata
;
8091 struct rpc_message msg
= {
8092 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SEQUENCE
],
8095 struct rpc_task_setup task_setup_data
= {
8096 .rpc_client
= clp
->cl_rpcclient
,
8097 .rpc_message
= &msg
,
8098 .callback_ops
= &nfs41_sequence_ops
,
8099 .flags
= RPC_TASK_ASYNC
| RPC_TASK_TIMEOUT
,
8102 if (!atomic_inc_not_zero(&clp
->cl_count
))
8103 return ERR_PTR(-EIO
);
8104 calldata
= kzalloc(sizeof(*calldata
), GFP_NOFS
);
8105 if (calldata
== NULL
) {
8106 nfs_put_client(clp
);
8107 return ERR_PTR(-ENOMEM
);
8109 nfs4_init_sequence(&calldata
->args
, &calldata
->res
, 0);
8111 nfs4_set_sequence_privileged(&calldata
->args
);
8112 msg
.rpc_argp
= &calldata
->args
;
8113 msg
.rpc_resp
= &calldata
->res
;
8114 calldata
->clp
= clp
;
8115 task_setup_data
.callback_data
= calldata
;
8117 return rpc_run_task(&task_setup_data
);
8120 static int nfs41_proc_async_sequence(struct nfs_client
*clp
, struct rpc_cred
*cred
, unsigned renew_flags
)
8122 struct rpc_task
*task
;
8125 if ((renew_flags
& NFS4_RENEW_TIMEOUT
) == 0)
8127 task
= _nfs41_proc_sequence(clp
, cred
, false);
8129 ret
= PTR_ERR(task
);
8131 rpc_put_task_async(task
);
8132 dprintk("<-- %s status=%d\n", __func__
, ret
);
8136 static int nfs4_proc_sequence(struct nfs_client
*clp
, struct rpc_cred
*cred
)
8138 struct rpc_task
*task
;
8141 task
= _nfs41_proc_sequence(clp
, cred
, true);
8143 ret
= PTR_ERR(task
);
8146 ret
= rpc_wait_for_completion_task(task
);
8148 ret
= task
->tk_status
;
8151 dprintk("<-- %s status=%d\n", __func__
, ret
);
8155 struct nfs4_reclaim_complete_data
{
8156 struct nfs_client
*clp
;
8157 struct nfs41_reclaim_complete_args arg
;
8158 struct nfs41_reclaim_complete_res res
;
8161 static void nfs4_reclaim_complete_prepare(struct rpc_task
*task
, void *data
)
8163 struct nfs4_reclaim_complete_data
*calldata
= data
;
8165 nfs4_setup_sequence(calldata
->clp
,
8166 &calldata
->arg
.seq_args
,
8167 &calldata
->res
.seq_res
,
8171 static int nfs41_reclaim_complete_handle_errors(struct rpc_task
*task
, struct nfs_client
*clp
)
8173 switch(task
->tk_status
) {
8175 case -NFS4ERR_COMPLETE_ALREADY
:
8176 case -NFS4ERR_WRONG_CRED
: /* What to do here? */
8178 case -NFS4ERR_DELAY
:
8179 rpc_delay(task
, NFS4_POLL_RETRY_MAX
);
8181 case -NFS4ERR_RETRY_UNCACHED_REP
:
8184 nfs4_schedule_lease_recovery(clp
);
8189 static void nfs4_reclaim_complete_done(struct rpc_task
*task
, void *data
)
8191 struct nfs4_reclaim_complete_data
*calldata
= data
;
8192 struct nfs_client
*clp
= calldata
->clp
;
8193 struct nfs4_sequence_res
*res
= &calldata
->res
.seq_res
;
8195 dprintk("--> %s\n", __func__
);
8196 if (!nfs41_sequence_done(task
, res
))
8199 trace_nfs4_reclaim_complete(clp
, task
->tk_status
);
8200 if (nfs41_reclaim_complete_handle_errors(task
, clp
) == -EAGAIN
) {
8201 rpc_restart_call_prepare(task
);
8204 dprintk("<-- %s\n", __func__
);
8207 static void nfs4_free_reclaim_complete_data(void *data
)
8209 struct nfs4_reclaim_complete_data
*calldata
= data
;
8214 static const struct rpc_call_ops nfs4_reclaim_complete_call_ops
= {
8215 .rpc_call_prepare
= nfs4_reclaim_complete_prepare
,
8216 .rpc_call_done
= nfs4_reclaim_complete_done
,
8217 .rpc_release
= nfs4_free_reclaim_complete_data
,
8221 * Issue a global reclaim complete.
8223 static int nfs41_proc_reclaim_complete(struct nfs_client
*clp
,
8224 struct rpc_cred
*cred
)
8226 struct nfs4_reclaim_complete_data
*calldata
;
8227 struct rpc_task
*task
;
8228 struct rpc_message msg
= {
8229 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RECLAIM_COMPLETE
],
8232 struct rpc_task_setup task_setup_data
= {
8233 .rpc_client
= clp
->cl_rpcclient
,
8234 .rpc_message
= &msg
,
8235 .callback_ops
= &nfs4_reclaim_complete_call_ops
,
8236 .flags
= RPC_TASK_ASYNC
,
8238 int status
= -ENOMEM
;
8240 dprintk("--> %s\n", __func__
);
8241 calldata
= kzalloc(sizeof(*calldata
), GFP_NOFS
);
8242 if (calldata
== NULL
)
8244 calldata
->clp
= clp
;
8245 calldata
->arg
.one_fs
= 0;
8247 nfs4_init_sequence(&calldata
->arg
.seq_args
, &calldata
->res
.seq_res
, 0);
8248 nfs4_set_sequence_privileged(&calldata
->arg
.seq_args
);
8249 msg
.rpc_argp
= &calldata
->arg
;
8250 msg
.rpc_resp
= &calldata
->res
;
8251 task_setup_data
.callback_data
= calldata
;
8252 task
= rpc_run_task(&task_setup_data
);
8254 status
= PTR_ERR(task
);
8257 status
= rpc_wait_for_completion_task(task
);
8259 status
= task
->tk_status
;
8263 dprintk("<-- %s status=%d\n", __func__
, status
);
8268 nfs4_layoutget_prepare(struct rpc_task
*task
, void *calldata
)
8270 struct nfs4_layoutget
*lgp
= calldata
;
8271 struct nfs_server
*server
= NFS_SERVER(lgp
->args
.inode
);
8273 dprintk("--> %s\n", __func__
);
8274 nfs4_setup_sequence(server
->nfs_client
, &lgp
->args
.seq_args
,
8275 &lgp
->res
.seq_res
, task
);
8276 dprintk("<-- %s\n", __func__
);
8279 static void nfs4_layoutget_done(struct rpc_task
*task
, void *calldata
)
8281 struct nfs4_layoutget
*lgp
= calldata
;
8283 dprintk("--> %s\n", __func__
);
8284 nfs41_sequence_process(task
, &lgp
->res
.seq_res
);
8285 dprintk("<-- %s\n", __func__
);
8289 nfs4_layoutget_handle_exception(struct rpc_task
*task
,
8290 struct nfs4_layoutget
*lgp
, struct nfs4_exception
*exception
)
8292 struct inode
*inode
= lgp
->args
.inode
;
8293 struct nfs_server
*server
= NFS_SERVER(inode
);
8294 struct pnfs_layout_hdr
*lo
;
8295 int nfs4err
= task
->tk_status
;
8296 int err
, status
= 0;
8299 dprintk("--> %s tk_status => %d\n", __func__
, -task
->tk_status
);
8306 * NFS4ERR_LAYOUTUNAVAILABLE means we are not supposed to use pnfs
8307 * on the file. set tk_status to -ENODATA to tell upper layer to
8310 case -NFS4ERR_LAYOUTUNAVAILABLE
:
8314 * NFS4ERR_BADLAYOUT means the MDS cannot return a layout of
8315 * length lgp->args.minlength != 0 (see RFC5661 section 18.43.3).
8317 case -NFS4ERR_BADLAYOUT
:
8318 status
= -EOVERFLOW
;
8321 * NFS4ERR_LAYOUTTRYLATER is a conflict with another client
8322 * (or clients) writing to the same RAID stripe except when
8323 * the minlength argument is 0 (see RFC5661 section 18.43.3).
8325 * Treat it like we would RECALLCONFLICT -- we retry for a little
8326 * while, and then eventually give up.
8328 case -NFS4ERR_LAYOUTTRYLATER
:
8329 if (lgp
->args
.minlength
== 0) {
8330 status
= -EOVERFLOW
;
8335 case -NFS4ERR_RECALLCONFLICT
:
8336 status
= -ERECALLCONFLICT
;
8338 case -NFS4ERR_DELEG_REVOKED
:
8339 case -NFS4ERR_ADMIN_REVOKED
:
8340 case -NFS4ERR_EXPIRED
:
8341 case -NFS4ERR_BAD_STATEID
:
8342 exception
->timeout
= 0;
8343 spin_lock(&inode
->i_lock
);
8344 lo
= NFS_I(inode
)->layout
;
8345 /* If the open stateid was bad, then recover it. */
8346 if (!lo
|| test_bit(NFS_LAYOUT_INVALID_STID
, &lo
->plh_flags
) ||
8347 nfs4_stateid_match_other(&lgp
->args
.stateid
,
8348 &lgp
->args
.ctx
->state
->stateid
)) {
8349 spin_unlock(&inode
->i_lock
);
8350 exception
->state
= lgp
->args
.ctx
->state
;
8351 exception
->stateid
= &lgp
->args
.stateid
;
8356 * Mark the bad layout state as invalid, then retry
8358 pnfs_mark_layout_stateid_invalid(lo
, &head
);
8359 spin_unlock(&inode
->i_lock
);
8360 pnfs_free_lseg_list(&head
);
8365 nfs4_sequence_free_slot(&lgp
->res
.seq_res
);
8366 err
= nfs4_handle_exception(server
, nfs4err
, exception
);
8368 if (exception
->retry
)
8374 dprintk("<-- %s\n", __func__
);
8378 static size_t max_response_pages(struct nfs_server
*server
)
8380 u32 max_resp_sz
= server
->nfs_client
->cl_session
->fc_attrs
.max_resp_sz
;
8381 return nfs_page_array_len(0, max_resp_sz
);
8384 static void nfs4_free_pages(struct page
**pages
, size_t size
)
8391 for (i
= 0; i
< size
; i
++) {
8394 __free_page(pages
[i
]);
8399 static struct page
**nfs4_alloc_pages(size_t size
, gfp_t gfp_flags
)
8401 struct page
**pages
;
8404 pages
= kcalloc(size
, sizeof(struct page
*), gfp_flags
);
8406 dprintk("%s: can't alloc array of %zu pages\n", __func__
, size
);
8410 for (i
= 0; i
< size
; i
++) {
8411 pages
[i
] = alloc_page(gfp_flags
);
8413 dprintk("%s: failed to allocate page\n", __func__
);
8414 nfs4_free_pages(pages
, size
);
8422 static void nfs4_layoutget_release(void *calldata
)
8424 struct nfs4_layoutget
*lgp
= calldata
;
8425 struct inode
*inode
= lgp
->args
.inode
;
8426 struct nfs_server
*server
= NFS_SERVER(inode
);
8427 size_t max_pages
= max_response_pages(server
);
8429 dprintk("--> %s\n", __func__
);
8430 nfs4_free_pages(lgp
->args
.layout
.pages
, max_pages
);
8431 pnfs_put_layout_hdr(NFS_I(inode
)->layout
);
8432 put_nfs_open_context(lgp
->args
.ctx
);
8434 dprintk("<-- %s\n", __func__
);
8437 static const struct rpc_call_ops nfs4_layoutget_call_ops
= {
8438 .rpc_call_prepare
= nfs4_layoutget_prepare
,
8439 .rpc_call_done
= nfs4_layoutget_done
,
8440 .rpc_release
= nfs4_layoutget_release
,
8443 struct pnfs_layout_segment
*
8444 nfs4_proc_layoutget(struct nfs4_layoutget
*lgp
, long *timeout
, gfp_t gfp_flags
)
8446 struct inode
*inode
= lgp
->args
.inode
;
8447 struct nfs_server
*server
= NFS_SERVER(inode
);
8448 size_t max_pages
= max_response_pages(server
);
8449 struct rpc_task
*task
;
8450 struct rpc_message msg
= {
8451 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LAYOUTGET
],
8452 .rpc_argp
= &lgp
->args
,
8453 .rpc_resp
= &lgp
->res
,
8454 .rpc_cred
= lgp
->cred
,
8456 struct rpc_task_setup task_setup_data
= {
8457 .rpc_client
= server
->client
,
8458 .rpc_message
= &msg
,
8459 .callback_ops
= &nfs4_layoutget_call_ops
,
8460 .callback_data
= lgp
,
8461 .flags
= RPC_TASK_ASYNC
,
8463 struct pnfs_layout_segment
*lseg
= NULL
;
8464 struct nfs4_exception exception
= {
8466 .timeout
= *timeout
,
8470 dprintk("--> %s\n", __func__
);
8472 /* nfs4_layoutget_release calls pnfs_put_layout_hdr */
8473 pnfs_get_layout_hdr(NFS_I(inode
)->layout
);
8475 lgp
->args
.layout
.pages
= nfs4_alloc_pages(max_pages
, gfp_flags
);
8476 if (!lgp
->args
.layout
.pages
) {
8477 nfs4_layoutget_release(lgp
);
8478 return ERR_PTR(-ENOMEM
);
8480 lgp
->args
.layout
.pglen
= max_pages
* PAGE_SIZE
;
8482 lgp
->res
.layoutp
= &lgp
->args
.layout
;
8483 lgp
->res
.seq_res
.sr_slot
= NULL
;
8484 nfs4_init_sequence(&lgp
->args
.seq_args
, &lgp
->res
.seq_res
, 0);
8486 task
= rpc_run_task(&task_setup_data
);
8488 return ERR_CAST(task
);
8489 status
= rpc_wait_for_completion_task(task
);
8491 status
= nfs4_layoutget_handle_exception(task
, lgp
, &exception
);
8492 *timeout
= exception
.timeout
;
8495 trace_nfs4_layoutget(lgp
->args
.ctx
,
8501 /* if layoutp->len is 0, nfs4_layoutget_prepare called rpc_exit */
8502 if (status
== 0 && lgp
->res
.layoutp
->len
)
8503 lseg
= pnfs_layout_process(lgp
);
8504 nfs4_sequence_free_slot(&lgp
->res
.seq_res
);
8506 dprintk("<-- %s status=%d\n", __func__
, status
);
8508 return ERR_PTR(status
);
8513 nfs4_layoutreturn_prepare(struct rpc_task
*task
, void *calldata
)
8515 struct nfs4_layoutreturn
*lrp
= calldata
;
8517 dprintk("--> %s\n", __func__
);
8518 nfs4_setup_sequence(lrp
->clp
,
8519 &lrp
->args
.seq_args
,
8524 static void nfs4_layoutreturn_done(struct rpc_task
*task
, void *calldata
)
8526 struct nfs4_layoutreturn
*lrp
= calldata
;
8527 struct nfs_server
*server
;
8529 dprintk("--> %s\n", __func__
);
8531 if (!nfs41_sequence_process(task
, &lrp
->res
.seq_res
))
8534 server
= NFS_SERVER(lrp
->args
.inode
);
8535 switch (task
->tk_status
) {
8537 task
->tk_status
= 0;
8540 case -NFS4ERR_DELAY
:
8541 if (nfs4_async_handle_error(task
, server
, NULL
, NULL
) != -EAGAIN
)
8543 nfs4_sequence_free_slot(&lrp
->res
.seq_res
);
8544 rpc_restart_call_prepare(task
);
8547 dprintk("<-- %s\n", __func__
);
8550 static void nfs4_layoutreturn_release(void *calldata
)
8552 struct nfs4_layoutreturn
*lrp
= calldata
;
8553 struct pnfs_layout_hdr
*lo
= lrp
->args
.layout
;
8555 dprintk("--> %s\n", __func__
);
8556 pnfs_layoutreturn_free_lsegs(lo
, &lrp
->args
.stateid
, &lrp
->args
.range
,
8557 lrp
->res
.lrs_present
? &lrp
->res
.stateid
: NULL
);
8558 nfs4_sequence_free_slot(&lrp
->res
.seq_res
);
8559 if (lrp
->ld_private
.ops
&& lrp
->ld_private
.ops
->free
)
8560 lrp
->ld_private
.ops
->free(&lrp
->ld_private
);
8561 pnfs_put_layout_hdr(lrp
->args
.layout
);
8562 nfs_iput_and_deactive(lrp
->inode
);
8564 dprintk("<-- %s\n", __func__
);
8567 static const struct rpc_call_ops nfs4_layoutreturn_call_ops
= {
8568 .rpc_call_prepare
= nfs4_layoutreturn_prepare
,
8569 .rpc_call_done
= nfs4_layoutreturn_done
,
8570 .rpc_release
= nfs4_layoutreturn_release
,
8573 int nfs4_proc_layoutreturn(struct nfs4_layoutreturn
*lrp
, bool sync
)
8575 struct rpc_task
*task
;
8576 struct rpc_message msg
= {
8577 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LAYOUTRETURN
],
8578 .rpc_argp
= &lrp
->args
,
8579 .rpc_resp
= &lrp
->res
,
8580 .rpc_cred
= lrp
->cred
,
8582 struct rpc_task_setup task_setup_data
= {
8583 .rpc_client
= NFS_SERVER(lrp
->args
.inode
)->client
,
8584 .rpc_message
= &msg
,
8585 .callback_ops
= &nfs4_layoutreturn_call_ops
,
8586 .callback_data
= lrp
,
8590 nfs4_state_protect(NFS_SERVER(lrp
->args
.inode
)->nfs_client
,
8591 NFS_SP4_MACH_CRED_PNFS_CLEANUP
,
8592 &task_setup_data
.rpc_client
, &msg
);
8594 dprintk("--> %s\n", __func__
);
8596 lrp
->inode
= nfs_igrab_and_active(lrp
->args
.inode
);
8598 nfs4_layoutreturn_release(lrp
);
8601 task_setup_data
.flags
|= RPC_TASK_ASYNC
;
8603 nfs4_init_sequence(&lrp
->args
.seq_args
, &lrp
->res
.seq_res
, 1);
8604 task
= rpc_run_task(&task_setup_data
);
8606 return PTR_ERR(task
);
8608 status
= task
->tk_status
;
8609 trace_nfs4_layoutreturn(lrp
->args
.inode
, &lrp
->args
.stateid
, status
);
8610 dprintk("<-- %s status=%d\n", __func__
, status
);
8616 _nfs4_proc_getdeviceinfo(struct nfs_server
*server
,
8617 struct pnfs_device
*pdev
,
8618 struct rpc_cred
*cred
)
8620 struct nfs4_getdeviceinfo_args args
= {
8622 .notify_types
= NOTIFY_DEVICEID4_CHANGE
|
8623 NOTIFY_DEVICEID4_DELETE
,
8625 struct nfs4_getdeviceinfo_res res
= {
8628 struct rpc_message msg
= {
8629 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GETDEVICEINFO
],
8636 dprintk("--> %s\n", __func__
);
8637 status
= nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
8638 if (res
.notification
& ~args
.notify_types
)
8639 dprintk("%s: unsupported notification\n", __func__
);
8640 if (res
.notification
!= args
.notify_types
)
8643 dprintk("<-- %s status=%d\n", __func__
, status
);
8648 int nfs4_proc_getdeviceinfo(struct nfs_server
*server
,
8649 struct pnfs_device
*pdev
,
8650 struct rpc_cred
*cred
)
8652 struct nfs4_exception exception
= { };
8656 err
= nfs4_handle_exception(server
,
8657 _nfs4_proc_getdeviceinfo(server
, pdev
, cred
),
8659 } while (exception
.retry
);
8662 EXPORT_SYMBOL_GPL(nfs4_proc_getdeviceinfo
);
8664 static void nfs4_layoutcommit_prepare(struct rpc_task
*task
, void *calldata
)
8666 struct nfs4_layoutcommit_data
*data
= calldata
;
8667 struct nfs_server
*server
= NFS_SERVER(data
->args
.inode
);
8669 nfs4_setup_sequence(server
->nfs_client
,
8670 &data
->args
.seq_args
,
8676 nfs4_layoutcommit_done(struct rpc_task
*task
, void *calldata
)
8678 struct nfs4_layoutcommit_data
*data
= calldata
;
8679 struct nfs_server
*server
= NFS_SERVER(data
->args
.inode
);
8681 if (!nfs41_sequence_done(task
, &data
->res
.seq_res
))
8684 switch (task
->tk_status
) { /* Just ignore these failures */
8685 case -NFS4ERR_DELEG_REVOKED
: /* layout was recalled */
8686 case -NFS4ERR_BADIOMODE
: /* no IOMODE_RW layout for range */
8687 case -NFS4ERR_BADLAYOUT
: /* no layout */
8688 case -NFS4ERR_GRACE
: /* loca_recalim always false */
8689 task
->tk_status
= 0;
8693 if (nfs4_async_handle_error(task
, server
, NULL
, NULL
) == -EAGAIN
) {
8694 rpc_restart_call_prepare(task
);
8700 static void nfs4_layoutcommit_release(void *calldata
)
8702 struct nfs4_layoutcommit_data
*data
= calldata
;
8704 pnfs_cleanup_layoutcommit(data
);
8705 nfs_post_op_update_inode_force_wcc(data
->args
.inode
,
8707 put_rpccred(data
->cred
);
8708 nfs_iput_and_deactive(data
->inode
);
8712 static const struct rpc_call_ops nfs4_layoutcommit_ops
= {
8713 .rpc_call_prepare
= nfs4_layoutcommit_prepare
,
8714 .rpc_call_done
= nfs4_layoutcommit_done
,
8715 .rpc_release
= nfs4_layoutcommit_release
,
8719 nfs4_proc_layoutcommit(struct nfs4_layoutcommit_data
*data
, bool sync
)
8721 struct rpc_message msg
= {
8722 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LAYOUTCOMMIT
],
8723 .rpc_argp
= &data
->args
,
8724 .rpc_resp
= &data
->res
,
8725 .rpc_cred
= data
->cred
,
8727 struct rpc_task_setup task_setup_data
= {
8728 .task
= &data
->task
,
8729 .rpc_client
= NFS_CLIENT(data
->args
.inode
),
8730 .rpc_message
= &msg
,
8731 .callback_ops
= &nfs4_layoutcommit_ops
,
8732 .callback_data
= data
,
8734 struct rpc_task
*task
;
8737 dprintk("NFS: initiating layoutcommit call. sync %d "
8738 "lbw: %llu inode %lu\n", sync
,
8739 data
->args
.lastbytewritten
,
8740 data
->args
.inode
->i_ino
);
8743 data
->inode
= nfs_igrab_and_active(data
->args
.inode
);
8744 if (data
->inode
== NULL
) {
8745 nfs4_layoutcommit_release(data
);
8748 task_setup_data
.flags
= RPC_TASK_ASYNC
;
8750 nfs4_init_sequence(&data
->args
.seq_args
, &data
->res
.seq_res
, 1);
8751 task
= rpc_run_task(&task_setup_data
);
8753 return PTR_ERR(task
);
8755 status
= task
->tk_status
;
8756 trace_nfs4_layoutcommit(data
->args
.inode
, &data
->args
.stateid
, status
);
8757 dprintk("%s: status %d\n", __func__
, status
);
8763 * Use the state managment nfs_client cl_rpcclient, which uses krb5i (if
8764 * possible) as per RFC3530bis and RFC5661 Security Considerations sections
8767 _nfs41_proc_secinfo_no_name(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
8768 struct nfs_fsinfo
*info
,
8769 struct nfs4_secinfo_flavors
*flavors
, bool use_integrity
)
8771 struct nfs41_secinfo_no_name_args args
= {
8772 .style
= SECINFO_STYLE_CURRENT_FH
,
8774 struct nfs4_secinfo_res res
= {
8777 struct rpc_message msg
= {
8778 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SECINFO_NO_NAME
],
8782 struct rpc_clnt
*clnt
= server
->client
;
8783 struct rpc_cred
*cred
= NULL
;
8786 if (use_integrity
) {
8787 clnt
= server
->nfs_client
->cl_rpcclient
;
8788 cred
= nfs4_get_clid_cred(server
->nfs_client
);
8789 msg
.rpc_cred
= cred
;
8792 dprintk("--> %s\n", __func__
);
8793 status
= nfs4_call_sync(clnt
, server
, &msg
, &args
.seq_args
,
8795 dprintk("<-- %s status=%d\n", __func__
, status
);
8804 nfs41_proc_secinfo_no_name(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
8805 struct nfs_fsinfo
*info
, struct nfs4_secinfo_flavors
*flavors
)
8807 struct nfs4_exception exception
= { };
8810 /* first try using integrity protection */
8811 err
= -NFS4ERR_WRONGSEC
;
8813 /* try to use integrity protection with machine cred */
8814 if (_nfs4_is_integrity_protected(server
->nfs_client
))
8815 err
= _nfs41_proc_secinfo_no_name(server
, fhandle
, info
,
8819 * if unable to use integrity protection, or SECINFO with
8820 * integrity protection returns NFS4ERR_WRONGSEC (which is
8821 * disallowed by spec, but exists in deployed servers) use
8822 * the current filesystem's rpc_client and the user cred.
8824 if (err
== -NFS4ERR_WRONGSEC
)
8825 err
= _nfs41_proc_secinfo_no_name(server
, fhandle
, info
,
8830 case -NFS4ERR_WRONGSEC
:
8834 err
= nfs4_handle_exception(server
, err
, &exception
);
8836 } while (exception
.retry
);
8842 nfs41_find_root_sec(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
8843 struct nfs_fsinfo
*info
)
8847 rpc_authflavor_t flavor
= RPC_AUTH_MAXFLAVOR
;
8848 struct nfs4_secinfo_flavors
*flavors
;
8849 struct nfs4_secinfo4
*secinfo
;
8852 page
= alloc_page(GFP_KERNEL
);
8858 flavors
= page_address(page
);
8859 err
= nfs41_proc_secinfo_no_name(server
, fhandle
, info
, flavors
);
8862 * Fall back on "guess and check" method if
8863 * the server doesn't support SECINFO_NO_NAME
8865 if (err
== -NFS4ERR_WRONGSEC
|| err
== -ENOTSUPP
) {
8866 err
= nfs4_find_root_sec(server
, fhandle
, info
);
8872 for (i
= 0; i
< flavors
->num_flavors
; i
++) {
8873 secinfo
= &flavors
->flavors
[i
];
8875 switch (secinfo
->flavor
) {
8879 flavor
= rpcauth_get_pseudoflavor(secinfo
->flavor
,
8880 &secinfo
->flavor_info
);
8883 flavor
= RPC_AUTH_MAXFLAVOR
;
8887 if (!nfs_auth_info_match(&server
->auth_info
, flavor
))
8888 flavor
= RPC_AUTH_MAXFLAVOR
;
8890 if (flavor
!= RPC_AUTH_MAXFLAVOR
) {
8891 err
= nfs4_lookup_root_sec(server
, fhandle
,
8898 if (flavor
== RPC_AUTH_MAXFLAVOR
)
8909 static int _nfs41_test_stateid(struct nfs_server
*server
,
8910 nfs4_stateid
*stateid
,
8911 struct rpc_cred
*cred
)
8914 struct nfs41_test_stateid_args args
= {
8917 struct nfs41_test_stateid_res res
;
8918 struct rpc_message msg
= {
8919 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_TEST_STATEID
],
8924 struct rpc_clnt
*rpc_client
= server
->client
;
8926 nfs4_state_protect(server
->nfs_client
, NFS_SP4_MACH_CRED_STATEID
,
8929 dprintk("NFS call test_stateid %p\n", stateid
);
8930 nfs4_init_sequence(&args
.seq_args
, &res
.seq_res
, 0);
8931 nfs4_set_sequence_privileged(&args
.seq_args
);
8932 status
= nfs4_call_sync_sequence(rpc_client
, server
, &msg
,
8933 &args
.seq_args
, &res
.seq_res
);
8934 if (status
!= NFS_OK
) {
8935 dprintk("NFS reply test_stateid: failed, %d\n", status
);
8938 dprintk("NFS reply test_stateid: succeeded, %d\n", -res
.status
);
8942 static void nfs4_handle_delay_or_session_error(struct nfs_server
*server
,
8943 int err
, struct nfs4_exception
*exception
)
8945 exception
->retry
= 0;
8947 case -NFS4ERR_DELAY
:
8948 case -NFS4ERR_RETRY_UNCACHED_REP
:
8949 nfs4_handle_exception(server
, err
, exception
);
8951 case -NFS4ERR_BADSESSION
:
8952 case -NFS4ERR_BADSLOT
:
8953 case -NFS4ERR_BAD_HIGH_SLOT
:
8954 case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION
:
8955 case -NFS4ERR_DEADSESSION
:
8956 nfs4_do_handle_exception(server
, err
, exception
);
8961 * nfs41_test_stateid - perform a TEST_STATEID operation
8963 * @server: server / transport on which to perform the operation
8964 * @stateid: state ID to test
8967 * Returns NFS_OK if the server recognizes that "stateid" is valid.
8968 * Otherwise a negative NFS4ERR value is returned if the operation
8969 * failed or the state ID is not currently valid.
8971 static int nfs41_test_stateid(struct nfs_server
*server
,
8972 nfs4_stateid
*stateid
,
8973 struct rpc_cred
*cred
)
8975 struct nfs4_exception exception
= { };
8978 err
= _nfs41_test_stateid(server
, stateid
, cred
);
8979 nfs4_handle_delay_or_session_error(server
, err
, &exception
);
8980 } while (exception
.retry
);
8984 struct nfs_free_stateid_data
{
8985 struct nfs_server
*server
;
8986 struct nfs41_free_stateid_args args
;
8987 struct nfs41_free_stateid_res res
;
8990 static void nfs41_free_stateid_prepare(struct rpc_task
*task
, void *calldata
)
8992 struct nfs_free_stateid_data
*data
= calldata
;
8993 nfs4_setup_sequence(data
->server
->nfs_client
,
8994 &data
->args
.seq_args
,
8999 static void nfs41_free_stateid_done(struct rpc_task
*task
, void *calldata
)
9001 struct nfs_free_stateid_data
*data
= calldata
;
9003 nfs41_sequence_done(task
, &data
->res
.seq_res
);
9005 switch (task
->tk_status
) {
9006 case -NFS4ERR_DELAY
:
9007 if (nfs4_async_handle_error(task
, data
->server
, NULL
, NULL
) == -EAGAIN
)
9008 rpc_restart_call_prepare(task
);
9012 static void nfs41_free_stateid_release(void *calldata
)
9017 static const struct rpc_call_ops nfs41_free_stateid_ops
= {
9018 .rpc_call_prepare
= nfs41_free_stateid_prepare
,
9019 .rpc_call_done
= nfs41_free_stateid_done
,
9020 .rpc_release
= nfs41_free_stateid_release
,
9023 static struct rpc_task
*_nfs41_free_stateid(struct nfs_server
*server
,
9024 const nfs4_stateid
*stateid
,
9025 struct rpc_cred
*cred
,
9028 struct rpc_message msg
= {
9029 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_FREE_STATEID
],
9032 struct rpc_task_setup task_setup
= {
9033 .rpc_client
= server
->client
,
9034 .rpc_message
= &msg
,
9035 .callback_ops
= &nfs41_free_stateid_ops
,
9036 .flags
= RPC_TASK_ASYNC
,
9038 struct nfs_free_stateid_data
*data
;
9040 nfs4_state_protect(server
->nfs_client
, NFS_SP4_MACH_CRED_STATEID
,
9041 &task_setup
.rpc_client
, &msg
);
9043 dprintk("NFS call free_stateid %p\n", stateid
);
9044 data
= kmalloc(sizeof(*data
), GFP_NOFS
);
9046 return ERR_PTR(-ENOMEM
);
9047 data
->server
= server
;
9048 nfs4_stateid_copy(&data
->args
.stateid
, stateid
);
9050 task_setup
.callback_data
= data
;
9052 msg
.rpc_argp
= &data
->args
;
9053 msg
.rpc_resp
= &data
->res
;
9054 nfs4_init_sequence(&data
->args
.seq_args
, &data
->res
.seq_res
, 1);
9056 nfs4_set_sequence_privileged(&data
->args
.seq_args
);
9058 return rpc_run_task(&task_setup
);
9062 * nfs41_free_stateid - perform a FREE_STATEID operation
9064 * @server: server / transport on which to perform the operation
9065 * @stateid: state ID to release
9067 * @is_recovery: set to true if this call needs to be privileged
9069 * Note: this function is always asynchronous.
9071 static int nfs41_free_stateid(struct nfs_server
*server
,
9072 const nfs4_stateid
*stateid
,
9073 struct rpc_cred
*cred
,
9076 struct rpc_task
*task
;
9078 task
= _nfs41_free_stateid(server
, stateid
, cred
, is_recovery
);
9080 return PTR_ERR(task
);
9086 nfs41_free_lock_state(struct nfs_server
*server
, struct nfs4_lock_state
*lsp
)
9088 struct rpc_cred
*cred
= lsp
->ls_state
->owner
->so_cred
;
9090 nfs41_free_stateid(server
, &lsp
->ls_stateid
, cred
, false);
9091 nfs4_free_lock_state(server
, lsp
);
9094 static bool nfs41_match_stateid(const nfs4_stateid
*s1
,
9095 const nfs4_stateid
*s2
)
9097 if (s1
->type
!= s2
->type
)
9100 if (memcmp(s1
->other
, s2
->other
, sizeof(s1
->other
)) != 0)
9103 if (s1
->seqid
== s2
->seqid
)
9106 return s1
->seqid
== 0 || s2
->seqid
== 0;
9109 #endif /* CONFIG_NFS_V4_1 */
9111 static bool nfs4_match_stateid(const nfs4_stateid
*s1
,
9112 const nfs4_stateid
*s2
)
9114 return nfs4_stateid_match(s1
, s2
);
9118 static const struct nfs4_state_recovery_ops nfs40_reboot_recovery_ops
= {
9119 .owner_flag_bit
= NFS_OWNER_RECLAIM_REBOOT
,
9120 .state_flag_bit
= NFS_STATE_RECLAIM_REBOOT
,
9121 .recover_open
= nfs4_open_reclaim
,
9122 .recover_lock
= nfs4_lock_reclaim
,
9123 .establish_clid
= nfs4_init_clientid
,
9124 .detect_trunking
= nfs40_discover_server_trunking
,
9127 #if defined(CONFIG_NFS_V4_1)
9128 static const struct nfs4_state_recovery_ops nfs41_reboot_recovery_ops
= {
9129 .owner_flag_bit
= NFS_OWNER_RECLAIM_REBOOT
,
9130 .state_flag_bit
= NFS_STATE_RECLAIM_REBOOT
,
9131 .recover_open
= nfs4_open_reclaim
,
9132 .recover_lock
= nfs4_lock_reclaim
,
9133 .establish_clid
= nfs41_init_clientid
,
9134 .reclaim_complete
= nfs41_proc_reclaim_complete
,
9135 .detect_trunking
= nfs41_discover_server_trunking
,
9137 #endif /* CONFIG_NFS_V4_1 */
9139 static const struct nfs4_state_recovery_ops nfs40_nograce_recovery_ops
= {
9140 .owner_flag_bit
= NFS_OWNER_RECLAIM_NOGRACE
,
9141 .state_flag_bit
= NFS_STATE_RECLAIM_NOGRACE
,
9142 .recover_open
= nfs40_open_expired
,
9143 .recover_lock
= nfs4_lock_expired
,
9144 .establish_clid
= nfs4_init_clientid
,
9147 #if defined(CONFIG_NFS_V4_1)
9148 static const struct nfs4_state_recovery_ops nfs41_nograce_recovery_ops
= {
9149 .owner_flag_bit
= NFS_OWNER_RECLAIM_NOGRACE
,
9150 .state_flag_bit
= NFS_STATE_RECLAIM_NOGRACE
,
9151 .recover_open
= nfs41_open_expired
,
9152 .recover_lock
= nfs41_lock_expired
,
9153 .establish_clid
= nfs41_init_clientid
,
9155 #endif /* CONFIG_NFS_V4_1 */
9157 static const struct nfs4_state_maintenance_ops nfs40_state_renewal_ops
= {
9158 .sched_state_renewal
= nfs4_proc_async_renew
,
9159 .get_state_renewal_cred_locked
= nfs4_get_renew_cred_locked
,
9160 .renew_lease
= nfs4_proc_renew
,
9163 #if defined(CONFIG_NFS_V4_1)
9164 static const struct nfs4_state_maintenance_ops nfs41_state_renewal_ops
= {
9165 .sched_state_renewal
= nfs41_proc_async_sequence
,
9166 .get_state_renewal_cred_locked
= nfs4_get_machine_cred_locked
,
9167 .renew_lease
= nfs4_proc_sequence
,
9171 static const struct nfs4_mig_recovery_ops nfs40_mig_recovery_ops
= {
9172 .get_locations
= _nfs40_proc_get_locations
,
9173 .fsid_present
= _nfs40_proc_fsid_present
,
9176 #if defined(CONFIG_NFS_V4_1)
9177 static const struct nfs4_mig_recovery_ops nfs41_mig_recovery_ops
= {
9178 .get_locations
= _nfs41_proc_get_locations
,
9179 .fsid_present
= _nfs41_proc_fsid_present
,
9181 #endif /* CONFIG_NFS_V4_1 */
9183 static const struct nfs4_minor_version_ops nfs_v4_0_minor_ops
= {
9185 .init_caps
= NFS_CAP_READDIRPLUS
9186 | NFS_CAP_ATOMIC_OPEN
9187 | NFS_CAP_POSIX_LOCK
,
9188 .init_client
= nfs40_init_client
,
9189 .shutdown_client
= nfs40_shutdown_client
,
9190 .match_stateid
= nfs4_match_stateid
,
9191 .find_root_sec
= nfs4_find_root_sec
,
9192 .free_lock_state
= nfs4_release_lockowner
,
9193 .test_and_free_expired
= nfs40_test_and_free_expired_stateid
,
9194 .alloc_seqid
= nfs_alloc_seqid
,
9195 .call_sync_ops
= &nfs40_call_sync_ops
,
9196 .reboot_recovery_ops
= &nfs40_reboot_recovery_ops
,
9197 .nograce_recovery_ops
= &nfs40_nograce_recovery_ops
,
9198 .state_renewal_ops
= &nfs40_state_renewal_ops
,
9199 .mig_recovery_ops
= &nfs40_mig_recovery_ops
,
9202 #if defined(CONFIG_NFS_V4_1)
9203 static struct nfs_seqid
*
9204 nfs_alloc_no_seqid(struct nfs_seqid_counter
*arg1
, gfp_t arg2
)
9209 static const struct nfs4_minor_version_ops nfs_v4_1_minor_ops
= {
9211 .init_caps
= NFS_CAP_READDIRPLUS
9212 | NFS_CAP_ATOMIC_OPEN
9213 | NFS_CAP_POSIX_LOCK
9214 | NFS_CAP_STATEID_NFSV41
9215 | NFS_CAP_ATOMIC_OPEN_V1
,
9216 .init_client
= nfs41_init_client
,
9217 .shutdown_client
= nfs41_shutdown_client
,
9218 .match_stateid
= nfs41_match_stateid
,
9219 .find_root_sec
= nfs41_find_root_sec
,
9220 .free_lock_state
= nfs41_free_lock_state
,
9221 .test_and_free_expired
= nfs41_test_and_free_expired_stateid
,
9222 .alloc_seqid
= nfs_alloc_no_seqid
,
9223 .session_trunk
= nfs4_test_session_trunk
,
9224 .call_sync_ops
= &nfs41_call_sync_ops
,
9225 .reboot_recovery_ops
= &nfs41_reboot_recovery_ops
,
9226 .nograce_recovery_ops
= &nfs41_nograce_recovery_ops
,
9227 .state_renewal_ops
= &nfs41_state_renewal_ops
,
9228 .mig_recovery_ops
= &nfs41_mig_recovery_ops
,
9232 #if defined(CONFIG_NFS_V4_2)
9233 static const struct nfs4_minor_version_ops nfs_v4_2_minor_ops
= {
9235 .init_caps
= NFS_CAP_READDIRPLUS
9236 | NFS_CAP_ATOMIC_OPEN
9237 | NFS_CAP_POSIX_LOCK
9238 | NFS_CAP_STATEID_NFSV41
9239 | NFS_CAP_ATOMIC_OPEN_V1
9242 | NFS_CAP_DEALLOCATE
9244 | NFS_CAP_LAYOUTSTATS
9246 .init_client
= nfs41_init_client
,
9247 .shutdown_client
= nfs41_shutdown_client
,
9248 .match_stateid
= nfs41_match_stateid
,
9249 .find_root_sec
= nfs41_find_root_sec
,
9250 .free_lock_state
= nfs41_free_lock_state
,
9251 .call_sync_ops
= &nfs41_call_sync_ops
,
9252 .test_and_free_expired
= nfs41_test_and_free_expired_stateid
,
9253 .alloc_seqid
= nfs_alloc_no_seqid
,
9254 .session_trunk
= nfs4_test_session_trunk
,
9255 .reboot_recovery_ops
= &nfs41_reboot_recovery_ops
,
9256 .nograce_recovery_ops
= &nfs41_nograce_recovery_ops
,
9257 .state_renewal_ops
= &nfs41_state_renewal_ops
,
9258 .mig_recovery_ops
= &nfs41_mig_recovery_ops
,
9262 const struct nfs4_minor_version_ops
*nfs_v4_minor_ops
[] = {
9263 [0] = &nfs_v4_0_minor_ops
,
9264 #if defined(CONFIG_NFS_V4_1)
9265 [1] = &nfs_v4_1_minor_ops
,
9267 #if defined(CONFIG_NFS_V4_2)
9268 [2] = &nfs_v4_2_minor_ops
,
9272 static ssize_t
nfs4_listxattr(struct dentry
*dentry
, char *list
, size_t size
)
9274 ssize_t error
, error2
;
9276 error
= generic_listxattr(dentry
, list
, size
);
9284 error2
= nfs4_listxattr_nfs4_label(d_inode(dentry
), list
, size
);
9287 return error
+ error2
;
9290 static const struct inode_operations nfs4_dir_inode_operations
= {
9291 .create
= nfs_create
,
9292 .lookup
= nfs_lookup
,
9293 .atomic_open
= nfs_atomic_open
,
9295 .unlink
= nfs_unlink
,
9296 .symlink
= nfs_symlink
,
9300 .rename
= nfs_rename
,
9301 .permission
= nfs_permission
,
9302 .getattr
= nfs_getattr
,
9303 .setattr
= nfs_setattr
,
9304 .listxattr
= nfs4_listxattr
,
9307 static const struct inode_operations nfs4_file_inode_operations
= {
9308 .permission
= nfs_permission
,
9309 .getattr
= nfs_getattr
,
9310 .setattr
= nfs_setattr
,
9311 .listxattr
= nfs4_listxattr
,
9314 const struct nfs_rpc_ops nfs_v4_clientops
= {
9315 .version
= 4, /* protocol version */
9316 .dentry_ops
= &nfs4_dentry_operations
,
9317 .dir_inode_ops
= &nfs4_dir_inode_operations
,
9318 .file_inode_ops
= &nfs4_file_inode_operations
,
9319 .file_ops
= &nfs4_file_operations
,
9320 .getroot
= nfs4_proc_get_root
,
9321 .submount
= nfs4_submount
,
9322 .try_mount
= nfs4_try_mount
,
9323 .getattr
= nfs4_proc_getattr
,
9324 .setattr
= nfs4_proc_setattr
,
9325 .lookup
= nfs4_proc_lookup
,
9326 .access
= nfs4_proc_access
,
9327 .readlink
= nfs4_proc_readlink
,
9328 .create
= nfs4_proc_create
,
9329 .remove
= nfs4_proc_remove
,
9330 .unlink_setup
= nfs4_proc_unlink_setup
,
9331 .unlink_rpc_prepare
= nfs4_proc_unlink_rpc_prepare
,
9332 .unlink_done
= nfs4_proc_unlink_done
,
9333 .rename_setup
= nfs4_proc_rename_setup
,
9334 .rename_rpc_prepare
= nfs4_proc_rename_rpc_prepare
,
9335 .rename_done
= nfs4_proc_rename_done
,
9336 .link
= nfs4_proc_link
,
9337 .symlink
= nfs4_proc_symlink
,
9338 .mkdir
= nfs4_proc_mkdir
,
9339 .rmdir
= nfs4_proc_remove
,
9340 .readdir
= nfs4_proc_readdir
,
9341 .mknod
= nfs4_proc_mknod
,
9342 .statfs
= nfs4_proc_statfs
,
9343 .fsinfo
= nfs4_proc_fsinfo
,
9344 .pathconf
= nfs4_proc_pathconf
,
9345 .set_capabilities
= nfs4_server_capabilities
,
9346 .decode_dirent
= nfs4_decode_dirent
,
9347 .pgio_rpc_prepare
= nfs4_proc_pgio_rpc_prepare
,
9348 .read_setup
= nfs4_proc_read_setup
,
9349 .read_done
= nfs4_read_done
,
9350 .write_setup
= nfs4_proc_write_setup
,
9351 .write_done
= nfs4_write_done
,
9352 .commit_setup
= nfs4_proc_commit_setup
,
9353 .commit_rpc_prepare
= nfs4_proc_commit_rpc_prepare
,
9354 .commit_done
= nfs4_commit_done
,
9355 .lock
= nfs4_proc_lock
,
9356 .clear_acl_cache
= nfs4_zap_acl_attr
,
9357 .close_context
= nfs4_close_context
,
9358 .open_context
= nfs4_atomic_open
,
9359 .have_delegation
= nfs4_have_delegation
,
9360 .return_delegation
= nfs4_inode_return_delegation
,
9361 .alloc_client
= nfs4_alloc_client
,
9362 .init_client
= nfs4_init_client
,
9363 .free_client
= nfs4_free_client
,
9364 .create_server
= nfs4_create_server
,
9365 .clone_server
= nfs_clone_server
,
9368 static const struct xattr_handler nfs4_xattr_nfs4_acl_handler
= {
9369 .name
= XATTR_NAME_NFSV4_ACL
,
9370 .list
= nfs4_xattr_list_nfs4_acl
,
9371 .get
= nfs4_xattr_get_nfs4_acl
,
9372 .set
= nfs4_xattr_set_nfs4_acl
,
9375 const struct xattr_handler
*nfs4_xattr_handlers
[] = {
9376 &nfs4_xattr_nfs4_acl_handler
,
9377 #ifdef CONFIG_NFS_V4_SECURITY_LABEL
9378 &nfs4_xattr_nfs4_label_handler
,