4 * Client-side procedure declarations for NFSv4.
6 * Copyright (c) 2002 The Regents of the University of Michigan.
9 * Kendrick Smith <kmsmith@umich.edu>
10 * Andy Adamson <andros@umich.edu>
12 * Redistribution and use in source and binary forms, with or without
13 * modification, are permitted provided that the following conditions
16 * 1. Redistributions of source code must retain the above copyright
17 * notice, this list of conditions and the following disclaimer.
18 * 2. Redistributions in binary form must reproduce the above copyright
19 * notice, this list of conditions and the following disclaimer in the
20 * documentation and/or other materials provided with the distribution.
21 * 3. Neither the name of the University nor the names of its
22 * contributors may be used to endorse or promote products derived
23 * from this software without specific prior written permission.
25 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
26 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
27 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
28 * DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
29 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
30 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
31 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
32 * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
33 * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
34 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
35 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
39 #include <linux/delay.h>
40 #include <linux/errno.h>
41 #include <linux/string.h>
42 #include <linux/ratelimit.h>
43 #include <linux/printk.h>
44 #include <linux/slab.h>
45 #include <linux/sunrpc/clnt.h>
46 #include <linux/nfs.h>
47 #include <linux/nfs4.h>
48 #include <linux/nfs_fs.h>
49 #include <linux/nfs_page.h>
50 #include <linux/nfs_mount.h>
51 #include <linux/namei.h>
52 #include <linux/mount.h>
53 #include <linux/module.h>
54 #include <linux/xattr.h>
55 #include <linux/utsname.h>
56 #include <linux/freezer.h>
59 #include "delegation.h"
65 #include "nfs4idmap.h"
66 #include "nfs4session.h"
69 #include "nfs4trace.h"
71 #define NFSDBG_FACILITY NFSDBG_PROC
73 #define NFS4_POLL_RETRY_MIN (HZ/10)
74 #define NFS4_POLL_RETRY_MAX (15*HZ)
76 /* file attributes which can be mapped to nfs attributes */
77 #define NFS4_VALID_ATTRS (ATTR_MODE \
88 static int _nfs4_proc_open(struct nfs4_opendata
*data
);
89 static int _nfs4_recover_proc_open(struct nfs4_opendata
*data
);
90 static int nfs4_do_fsinfo(struct nfs_server
*, struct nfs_fh
*, struct nfs_fsinfo
*);
91 static void nfs_fixup_referral_attributes(struct nfs_fattr
*fattr
);
92 static int nfs4_proc_getattr(struct nfs_server
*, struct nfs_fh
*, struct nfs_fattr
*, struct nfs4_label
*label
);
93 static int _nfs4_proc_getattr(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fattr
*fattr
, struct nfs4_label
*label
);
94 static int nfs4_do_setattr(struct inode
*inode
, struct rpc_cred
*cred
,
95 struct nfs_fattr
*fattr
, struct iattr
*sattr
,
96 struct nfs_open_context
*ctx
, struct nfs4_label
*ilabel
,
97 struct nfs4_label
*olabel
);
98 #ifdef CONFIG_NFS_V4_1
99 static int nfs41_test_stateid(struct nfs_server
*, nfs4_stateid
*,
101 static int nfs41_free_stateid(struct nfs_server
*, const nfs4_stateid
*,
102 struct rpc_cred
*, bool);
105 #ifdef CONFIG_NFS_V4_SECURITY_LABEL
106 static inline struct nfs4_label
*
107 nfs4_label_init_security(struct inode
*dir
, struct dentry
*dentry
,
108 struct iattr
*sattr
, struct nfs4_label
*label
)
115 if (nfs_server_capable(dir
, NFS_CAP_SECURITY_LABEL
) == 0)
118 err
= security_dentry_init_security(dentry
, sattr
->ia_mode
,
119 &dentry
->d_name
, (void **)&label
->label
, &label
->len
);
126 nfs4_label_release_security(struct nfs4_label
*label
)
129 security_release_secctx(label
->label
, label
->len
);
131 static inline u32
*nfs4_bitmask(struct nfs_server
*server
, struct nfs4_label
*label
)
134 return server
->attr_bitmask
;
136 return server
->attr_bitmask_nl
;
139 static inline struct nfs4_label
*
140 nfs4_label_init_security(struct inode
*dir
, struct dentry
*dentry
,
141 struct iattr
*sattr
, struct nfs4_label
*l
)
144 nfs4_label_release_security(struct nfs4_label
*label
)
147 nfs4_bitmask(struct nfs_server
*server
, struct nfs4_label
*label
)
148 { return server
->attr_bitmask
; }
151 /* Prevent leaks of NFSv4 errors into userland */
152 static int nfs4_map_errors(int err
)
157 case -NFS4ERR_RESOURCE
:
158 case -NFS4ERR_LAYOUTTRYLATER
:
159 case -NFS4ERR_RECALLCONFLICT
:
161 case -NFS4ERR_WRONGSEC
:
162 case -NFS4ERR_WRONG_CRED
:
164 case -NFS4ERR_BADOWNER
:
165 case -NFS4ERR_BADNAME
:
167 case -NFS4ERR_SHARE_DENIED
:
169 case -NFS4ERR_MINOR_VERS_MISMATCH
:
170 return -EPROTONOSUPPORT
;
171 case -NFS4ERR_FILE_OPEN
:
174 dprintk("%s could not handle NFSv4 error %d\n",
182 * This is our standard bitmap for GETATTR requests.
184 const u32 nfs4_fattr_bitmap
[3] = {
186 | FATTR4_WORD0_CHANGE
189 | FATTR4_WORD0_FILEID
,
191 | FATTR4_WORD1_NUMLINKS
193 | FATTR4_WORD1_OWNER_GROUP
194 | FATTR4_WORD1_RAWDEV
195 | FATTR4_WORD1_SPACE_USED
196 | FATTR4_WORD1_TIME_ACCESS
197 | FATTR4_WORD1_TIME_METADATA
198 | FATTR4_WORD1_TIME_MODIFY
199 | FATTR4_WORD1_MOUNTED_ON_FILEID
,
200 #ifdef CONFIG_NFS_V4_SECURITY_LABEL
201 FATTR4_WORD2_SECURITY_LABEL
205 static const u32 nfs4_pnfs_open_bitmap
[3] = {
207 | FATTR4_WORD0_CHANGE
210 | FATTR4_WORD0_FILEID
,
212 | FATTR4_WORD1_NUMLINKS
214 | FATTR4_WORD1_OWNER_GROUP
215 | FATTR4_WORD1_RAWDEV
216 | FATTR4_WORD1_SPACE_USED
217 | FATTR4_WORD1_TIME_ACCESS
218 | FATTR4_WORD1_TIME_METADATA
219 | FATTR4_WORD1_TIME_MODIFY
,
220 FATTR4_WORD2_MDSTHRESHOLD
221 #ifdef CONFIG_NFS_V4_SECURITY_LABEL
222 | FATTR4_WORD2_SECURITY_LABEL
226 static const u32 nfs4_open_noattr_bitmap
[3] = {
228 | FATTR4_WORD0_FILEID
,
231 const u32 nfs4_statfs_bitmap
[3] = {
232 FATTR4_WORD0_FILES_AVAIL
233 | FATTR4_WORD0_FILES_FREE
234 | FATTR4_WORD0_FILES_TOTAL
,
235 FATTR4_WORD1_SPACE_AVAIL
236 | FATTR4_WORD1_SPACE_FREE
237 | FATTR4_WORD1_SPACE_TOTAL
240 const u32 nfs4_pathconf_bitmap
[3] = {
242 | FATTR4_WORD0_MAXNAME
,
246 const u32 nfs4_fsinfo_bitmap
[3] = { FATTR4_WORD0_MAXFILESIZE
247 | FATTR4_WORD0_MAXREAD
248 | FATTR4_WORD0_MAXWRITE
249 | FATTR4_WORD0_LEASE_TIME
,
250 FATTR4_WORD1_TIME_DELTA
251 | FATTR4_WORD1_FS_LAYOUT_TYPES
,
252 FATTR4_WORD2_LAYOUT_BLKSIZE
253 | FATTR4_WORD2_CLONE_BLKSIZE
256 const u32 nfs4_fs_locations_bitmap
[3] = {
258 | FATTR4_WORD0_CHANGE
261 | FATTR4_WORD0_FILEID
262 | FATTR4_WORD0_FS_LOCATIONS
,
264 | FATTR4_WORD1_NUMLINKS
266 | FATTR4_WORD1_OWNER_GROUP
267 | FATTR4_WORD1_RAWDEV
268 | FATTR4_WORD1_SPACE_USED
269 | FATTR4_WORD1_TIME_ACCESS
270 | FATTR4_WORD1_TIME_METADATA
271 | FATTR4_WORD1_TIME_MODIFY
272 | FATTR4_WORD1_MOUNTED_ON_FILEID
,
275 static void nfs4_setup_readdir(u64 cookie
, __be32
*verifier
, struct dentry
*dentry
,
276 struct nfs4_readdir_arg
*readdir
)
281 readdir
->cookie
= cookie
;
282 memcpy(&readdir
->verifier
, verifier
, sizeof(readdir
->verifier
));
287 memset(&readdir
->verifier
, 0, sizeof(readdir
->verifier
));
292 * NFSv4 servers do not return entries for '.' and '..'
293 * Therefore, we fake these entries here. We let '.'
294 * have cookie 0 and '..' have cookie 1. Note that
295 * when talking to the server, we always send cookie 0
298 start
= p
= kmap_atomic(*readdir
->pages
);
301 *p
++ = xdr_one
; /* next */
302 *p
++ = xdr_zero
; /* cookie, first word */
303 *p
++ = xdr_one
; /* cookie, second word */
304 *p
++ = xdr_one
; /* entry len */
305 memcpy(p
, ".\0\0\0", 4); /* entry */
307 *p
++ = xdr_one
; /* bitmap length */
308 *p
++ = htonl(FATTR4_WORD0_FILEID
); /* bitmap */
309 *p
++ = htonl(8); /* attribute buffer length */
310 p
= xdr_encode_hyper(p
, NFS_FILEID(d_inode(dentry
)));
313 *p
++ = xdr_one
; /* next */
314 *p
++ = xdr_zero
; /* cookie, first word */
315 *p
++ = xdr_two
; /* cookie, second word */
316 *p
++ = xdr_two
; /* entry len */
317 memcpy(p
, "..\0\0", 4); /* entry */
319 *p
++ = xdr_one
; /* bitmap length */
320 *p
++ = htonl(FATTR4_WORD0_FILEID
); /* bitmap */
321 *p
++ = htonl(8); /* attribute buffer length */
322 p
= xdr_encode_hyper(p
, NFS_FILEID(d_inode(dentry
->d_parent
)));
324 readdir
->pgbase
= (char *)p
- (char *)start
;
325 readdir
->count
-= readdir
->pgbase
;
326 kunmap_atomic(start
);
329 static void nfs4_test_and_free_stateid(struct nfs_server
*server
,
330 nfs4_stateid
*stateid
,
331 struct rpc_cred
*cred
)
333 const struct nfs4_minor_version_ops
*ops
= server
->nfs_client
->cl_mvops
;
335 ops
->test_and_free_expired(server
, stateid
, cred
);
338 static void __nfs4_free_revoked_stateid(struct nfs_server
*server
,
339 nfs4_stateid
*stateid
,
340 struct rpc_cred
*cred
)
342 stateid
->type
= NFS4_REVOKED_STATEID_TYPE
;
343 nfs4_test_and_free_stateid(server
, stateid
, cred
);
346 static void nfs4_free_revoked_stateid(struct nfs_server
*server
,
347 const nfs4_stateid
*stateid
,
348 struct rpc_cred
*cred
)
352 nfs4_stateid_copy(&tmp
, stateid
);
353 __nfs4_free_revoked_stateid(server
, &tmp
, cred
);
356 static long nfs4_update_delay(long *timeout
)
360 return NFS4_POLL_RETRY_MAX
;
362 *timeout
= NFS4_POLL_RETRY_MIN
;
363 if (*timeout
> NFS4_POLL_RETRY_MAX
)
364 *timeout
= NFS4_POLL_RETRY_MAX
;
370 static int nfs4_delay(struct rpc_clnt
*clnt
, long *timeout
)
376 freezable_schedule_timeout_killable_unsafe(
377 nfs4_update_delay(timeout
));
378 if (fatal_signal_pending(current
))
383 /* This is the error handling routine for processes that are allowed
386 static int nfs4_do_handle_exception(struct nfs_server
*server
,
387 int errorcode
, struct nfs4_exception
*exception
)
389 struct nfs_client
*clp
= server
->nfs_client
;
390 struct nfs4_state
*state
= exception
->state
;
391 const nfs4_stateid
*stateid
= exception
->stateid
;
392 struct inode
*inode
= exception
->inode
;
395 exception
->delay
= 0;
396 exception
->recovering
= 0;
397 exception
->retry
= 0;
399 if (stateid
== NULL
&& state
!= NULL
)
400 stateid
= &state
->stateid
;
405 case -NFS4ERR_DELEG_REVOKED
:
406 case -NFS4ERR_ADMIN_REVOKED
:
407 case -NFS4ERR_EXPIRED
:
408 case -NFS4ERR_BAD_STATEID
:
409 if (inode
!= NULL
&& stateid
!= NULL
) {
410 nfs_inode_find_state_and_recover(inode
,
412 goto wait_on_recovery
;
414 case -NFS4ERR_OPENMODE
:
418 err
= nfs_async_inode_return_delegation(inode
,
421 goto wait_on_recovery
;
422 if (stateid
!= NULL
&& stateid
->type
== NFS4_DELEGATION_STATEID_TYPE
) {
423 exception
->retry
= 1;
429 ret
= nfs4_schedule_stateid_recovery(server
, state
);
432 goto wait_on_recovery
;
433 case -NFS4ERR_STALE_STATEID
:
434 case -NFS4ERR_STALE_CLIENTID
:
435 nfs4_schedule_lease_recovery(clp
);
436 goto wait_on_recovery
;
438 ret
= nfs4_schedule_migration_recovery(server
);
441 goto wait_on_recovery
;
442 case -NFS4ERR_LEASE_MOVED
:
443 nfs4_schedule_lease_moved_recovery(clp
);
444 goto wait_on_recovery
;
445 #if defined(CONFIG_NFS_V4_1)
446 case -NFS4ERR_BADSESSION
:
447 case -NFS4ERR_BADSLOT
:
448 case -NFS4ERR_BAD_HIGH_SLOT
:
449 case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION
:
450 case -NFS4ERR_DEADSESSION
:
451 case -NFS4ERR_SEQ_FALSE_RETRY
:
452 case -NFS4ERR_SEQ_MISORDERED
:
453 dprintk("%s ERROR: %d Reset session\n", __func__
,
455 nfs4_schedule_session_recovery(clp
->cl_session
, errorcode
);
456 goto wait_on_recovery
;
457 #endif /* defined(CONFIG_NFS_V4_1) */
458 case -NFS4ERR_FILE_OPEN
:
459 if (exception
->timeout
> HZ
) {
460 /* We have retried a decent amount, time to
467 nfs_inc_server_stats(server
, NFSIOS_DELAY
);
469 case -NFS4ERR_LAYOUTTRYLATER
:
470 case -NFS4ERR_RECALLCONFLICT
:
471 exception
->delay
= 1;
474 case -NFS4ERR_RETRY_UNCACHED_REP
:
475 case -NFS4ERR_OLD_STATEID
:
476 exception
->retry
= 1;
478 case -NFS4ERR_BADOWNER
:
479 /* The following works around a Linux server bug! */
480 case -NFS4ERR_BADNAME
:
481 if (server
->caps
& NFS_CAP_UIDGID_NOMAP
) {
482 server
->caps
&= ~NFS_CAP_UIDGID_NOMAP
;
483 exception
->retry
= 1;
484 printk(KERN_WARNING
"NFS: v4 server %s "
485 "does not accept raw "
487 "Reenabling the idmapper.\n",
488 server
->nfs_client
->cl_hostname
);
491 /* We failed to handle the error */
492 return nfs4_map_errors(ret
);
494 exception
->recovering
= 1;
498 /* This is the error handling routine for processes that are allowed
501 int nfs4_handle_exception(struct nfs_server
*server
, int errorcode
, struct nfs4_exception
*exception
)
503 struct nfs_client
*clp
= server
->nfs_client
;
506 ret
= nfs4_do_handle_exception(server
, errorcode
, exception
);
507 if (exception
->delay
) {
508 ret
= nfs4_delay(server
->client
, &exception
->timeout
);
511 if (exception
->recovering
) {
512 ret
= nfs4_wait_clnt_recover(clp
);
513 if (test_bit(NFS_MIG_FAILED
, &server
->mig_status
))
520 exception
->retry
= 1;
525 nfs4_async_handle_exception(struct rpc_task
*task
, struct nfs_server
*server
,
526 int errorcode
, struct nfs4_exception
*exception
)
528 struct nfs_client
*clp
= server
->nfs_client
;
531 ret
= nfs4_do_handle_exception(server
, errorcode
, exception
);
532 if (exception
->delay
) {
533 rpc_delay(task
, nfs4_update_delay(&exception
->timeout
));
536 if (exception
->recovering
) {
537 rpc_sleep_on(&clp
->cl_rpcwaitq
, task
, NULL
);
538 if (test_bit(NFS4CLNT_MANAGER_RUNNING
, &clp
->cl_state
) == 0)
539 rpc_wake_up_queued_task(&clp
->cl_rpcwaitq
, task
);
542 if (test_bit(NFS_MIG_FAILED
, &server
->mig_status
))
547 exception
->retry
= 1;
552 nfs4_async_handle_error(struct rpc_task
*task
, struct nfs_server
*server
,
553 struct nfs4_state
*state
, long *timeout
)
555 struct nfs4_exception exception
= {
559 if (task
->tk_status
>= 0)
562 exception
.timeout
= *timeout
;
563 task
->tk_status
= nfs4_async_handle_exception(task
, server
,
566 if (exception
.delay
&& timeout
)
567 *timeout
= exception
.timeout
;
574 * Return 'true' if 'clp' is using an rpc_client that is integrity protected
575 * or 'false' otherwise.
577 static bool _nfs4_is_integrity_protected(struct nfs_client
*clp
)
579 rpc_authflavor_t flavor
= clp
->cl_rpcclient
->cl_auth
->au_flavor
;
580 return (flavor
== RPC_AUTH_GSS_KRB5I
) || (flavor
== RPC_AUTH_GSS_KRB5P
);
583 static void do_renew_lease(struct nfs_client
*clp
, unsigned long timestamp
)
585 spin_lock(&clp
->cl_lock
);
586 if (time_before(clp
->cl_last_renewal
,timestamp
))
587 clp
->cl_last_renewal
= timestamp
;
588 spin_unlock(&clp
->cl_lock
);
591 static void renew_lease(const struct nfs_server
*server
, unsigned long timestamp
)
593 struct nfs_client
*clp
= server
->nfs_client
;
595 if (!nfs4_has_session(clp
))
596 do_renew_lease(clp
, timestamp
);
599 struct nfs4_call_sync_data
{
600 const struct nfs_server
*seq_server
;
601 struct nfs4_sequence_args
*seq_args
;
602 struct nfs4_sequence_res
*seq_res
;
605 void nfs4_init_sequence(struct nfs4_sequence_args
*args
,
606 struct nfs4_sequence_res
*res
, int cache_reply
)
608 args
->sa_slot
= NULL
;
609 args
->sa_cache_this
= cache_reply
;
610 args
->sa_privileged
= 0;
615 static void nfs4_set_sequence_privileged(struct nfs4_sequence_args
*args
)
617 args
->sa_privileged
= 1;
620 static void nfs40_sequence_free_slot(struct nfs4_sequence_res
*res
)
622 struct nfs4_slot
*slot
= res
->sr_slot
;
623 struct nfs4_slot_table
*tbl
;
626 spin_lock(&tbl
->slot_tbl_lock
);
627 if (!nfs41_wake_and_assign_slot(tbl
, slot
))
628 nfs4_free_slot(tbl
, slot
);
629 spin_unlock(&tbl
->slot_tbl_lock
);
634 static int nfs40_sequence_done(struct rpc_task
*task
,
635 struct nfs4_sequence_res
*res
)
637 if (res
->sr_slot
!= NULL
)
638 nfs40_sequence_free_slot(res
);
642 #if defined(CONFIG_NFS_V4_1)
644 static void nfs41_sequence_free_slot(struct nfs4_sequence_res
*res
)
646 struct nfs4_session
*session
;
647 struct nfs4_slot_table
*tbl
;
648 struct nfs4_slot
*slot
= res
->sr_slot
;
649 bool send_new_highest_used_slotid
= false;
652 session
= tbl
->session
;
654 /* Bump the slot sequence number */
659 spin_lock(&tbl
->slot_tbl_lock
);
660 /* Be nice to the server: try to ensure that the last transmitted
661 * value for highest_user_slotid <= target_highest_slotid
663 if (tbl
->highest_used_slotid
> tbl
->target_highest_slotid
)
664 send_new_highest_used_slotid
= true;
666 if (nfs41_wake_and_assign_slot(tbl
, slot
)) {
667 send_new_highest_used_slotid
= false;
670 nfs4_free_slot(tbl
, slot
);
672 if (tbl
->highest_used_slotid
!= NFS4_NO_SLOT
)
673 send_new_highest_used_slotid
= false;
675 spin_unlock(&tbl
->slot_tbl_lock
);
677 if (send_new_highest_used_slotid
)
678 nfs41_notify_server(session
->clp
);
679 if (waitqueue_active(&tbl
->slot_waitq
))
680 wake_up_all(&tbl
->slot_waitq
);
683 static int nfs41_sequence_process(struct rpc_task
*task
,
684 struct nfs4_sequence_res
*res
)
686 struct nfs4_session
*session
;
687 struct nfs4_slot
*slot
= res
->sr_slot
;
688 struct nfs_client
*clp
;
689 bool interrupted
= false;
694 /* don't increment the sequence number if the task wasn't sent */
695 if (!RPC_WAS_SENT(task
))
698 session
= slot
->table
->session
;
700 if (slot
->interrupted
) {
701 if (res
->sr_status
!= -NFS4ERR_DELAY
)
702 slot
->interrupted
= 0;
706 trace_nfs4_sequence_done(session
, res
);
707 /* Check the SEQUENCE operation status */
708 switch (res
->sr_status
) {
710 /* If previous op on slot was interrupted and we reused
711 * the seq# and got a reply from the cache, then retry
713 if (task
->tk_status
== -EREMOTEIO
&& interrupted
) {
717 /* Update the slot's sequence and clientid lease timer */
720 do_renew_lease(clp
, res
->sr_timestamp
);
721 /* Check sequence flags */
722 nfs41_handle_sequence_flag_errors(clp
, res
->sr_status_flags
,
724 nfs41_update_target_slotid(slot
->table
, slot
, res
);
728 * sr_status remains 1 if an RPC level error occurred.
729 * The server may or may not have processed the sequence
731 * Mark the slot as having hosted an interrupted RPC call.
733 slot
->interrupted
= 1;
736 /* The server detected a resend of the RPC call and
737 * returned NFS4ERR_DELAY as per Section 2.10.6.2
740 dprintk("%s: slot=%u seq=%u: Operation in progress\n",
745 case -NFS4ERR_BADSLOT
:
747 * The slot id we used was probably retired. Try again
748 * using a different slot id.
751 case -NFS4ERR_SEQ_MISORDERED
:
753 * Was the last operation on this sequence interrupted?
754 * If so, retry after bumping the sequence number.
761 * Could this slot have been previously retired?
762 * If so, then the server may be expecting seq_nr = 1!
764 if (slot
->seq_nr
!= 1) {
769 case -NFS4ERR_SEQ_FALSE_RETRY
:
773 /* Just update the slot sequence no. */
777 /* The session may be reset by one of the error handlers. */
778 dprintk("%s: Error %d free the slot \n", __func__
, res
->sr_status
);
782 if (rpc_restart_call_prepare(task
)) {
783 nfs41_sequence_free_slot(res
);
789 if (!rpc_restart_call(task
))
791 rpc_delay(task
, NFS4_POLL_RETRY_MAX
);
795 int nfs41_sequence_done(struct rpc_task
*task
, struct nfs4_sequence_res
*res
)
797 if (!nfs41_sequence_process(task
, res
))
799 if (res
->sr_slot
!= NULL
)
800 nfs41_sequence_free_slot(res
);
804 EXPORT_SYMBOL_GPL(nfs41_sequence_done
);
806 static int nfs4_sequence_process(struct rpc_task
*task
, struct nfs4_sequence_res
*res
)
808 if (res
->sr_slot
== NULL
)
810 if (res
->sr_slot
->table
->session
!= NULL
)
811 return nfs41_sequence_process(task
, res
);
812 return nfs40_sequence_done(task
, res
);
815 static void nfs4_sequence_free_slot(struct nfs4_sequence_res
*res
)
817 if (res
->sr_slot
!= NULL
) {
818 if (res
->sr_slot
->table
->session
!= NULL
)
819 nfs41_sequence_free_slot(res
);
821 nfs40_sequence_free_slot(res
);
825 int nfs4_sequence_done(struct rpc_task
*task
, struct nfs4_sequence_res
*res
)
827 if (res
->sr_slot
== NULL
)
829 if (!res
->sr_slot
->table
->session
)
830 return nfs40_sequence_done(task
, res
);
831 return nfs41_sequence_done(task
, res
);
833 EXPORT_SYMBOL_GPL(nfs4_sequence_done
);
835 static void nfs41_call_sync_prepare(struct rpc_task
*task
, void *calldata
)
837 struct nfs4_call_sync_data
*data
= calldata
;
839 dprintk("--> %s data->seq_server %p\n", __func__
, data
->seq_server
);
841 nfs4_setup_sequence(data
->seq_server
->nfs_client
,
842 data
->seq_args
, data
->seq_res
, task
);
845 static void nfs41_call_sync_done(struct rpc_task
*task
, void *calldata
)
847 struct nfs4_call_sync_data
*data
= calldata
;
849 nfs41_sequence_done(task
, data
->seq_res
);
852 static const struct rpc_call_ops nfs41_call_sync_ops
= {
853 .rpc_call_prepare
= nfs41_call_sync_prepare
,
854 .rpc_call_done
= nfs41_call_sync_done
,
857 #else /* !CONFIG_NFS_V4_1 */
859 static int nfs4_sequence_process(struct rpc_task
*task
, struct nfs4_sequence_res
*res
)
861 return nfs40_sequence_done(task
, res
);
864 static void nfs4_sequence_free_slot(struct nfs4_sequence_res
*res
)
866 if (res
->sr_slot
!= NULL
)
867 nfs40_sequence_free_slot(res
);
870 int nfs4_sequence_done(struct rpc_task
*task
,
871 struct nfs4_sequence_res
*res
)
873 return nfs40_sequence_done(task
, res
);
875 EXPORT_SYMBOL_GPL(nfs4_sequence_done
);
877 #endif /* !CONFIG_NFS_V4_1 */
879 int nfs4_setup_sequence(const struct nfs_client
*client
,
880 struct nfs4_sequence_args
*args
,
881 struct nfs4_sequence_res
*res
,
882 struct rpc_task
*task
)
884 struct nfs4_session
*session
= nfs4_get_session(client
);
885 struct nfs4_slot_table
*tbl
= client
->cl_slot_tbl
;
886 struct nfs4_slot
*slot
;
888 /* slot already allocated? */
889 if (res
->sr_slot
!= NULL
)
893 tbl
= &session
->fc_slot_table
;
894 task
->tk_timeout
= 0;
897 spin_lock(&tbl
->slot_tbl_lock
);
898 /* The state manager will wait until the slot table is empty */
899 if (nfs4_slot_tbl_draining(tbl
) && !args
->sa_privileged
)
902 slot
= nfs4_alloc_slot(tbl
);
904 /* Try again in 1/4 second */
905 if (slot
== ERR_PTR(-ENOMEM
))
906 task
->tk_timeout
= HZ
>> 2;
909 spin_unlock(&tbl
->slot_tbl_lock
);
911 slot
->privileged
= args
->sa_privileged
? 1 : 0;
912 args
->sa_slot
= slot
;
916 res
->sr_timestamp
= jiffies
;
917 res
->sr_status_flags
= 0;
921 trace_nfs4_setup_sequence(session
, args
);
923 rpc_call_start(task
);
927 if (args
->sa_privileged
)
928 rpc_sleep_on_priority(&tbl
->slot_tbl_waitq
, task
,
929 NULL
, RPC_PRIORITY_PRIVILEGED
);
931 rpc_sleep_on(&tbl
->slot_tbl_waitq
, task
, NULL
);
932 spin_unlock(&tbl
->slot_tbl_lock
);
935 EXPORT_SYMBOL_GPL(nfs4_setup_sequence
);
937 static void nfs40_call_sync_prepare(struct rpc_task
*task
, void *calldata
)
939 struct nfs4_call_sync_data
*data
= calldata
;
940 nfs4_setup_sequence(data
->seq_server
->nfs_client
,
941 data
->seq_args
, data
->seq_res
, task
);
944 static void nfs40_call_sync_done(struct rpc_task
*task
, void *calldata
)
946 struct nfs4_call_sync_data
*data
= calldata
;
947 nfs4_sequence_done(task
, data
->seq_res
);
950 static const struct rpc_call_ops nfs40_call_sync_ops
= {
951 .rpc_call_prepare
= nfs40_call_sync_prepare
,
952 .rpc_call_done
= nfs40_call_sync_done
,
955 static int nfs4_call_sync_sequence(struct rpc_clnt
*clnt
,
956 struct nfs_server
*server
,
957 struct rpc_message
*msg
,
958 struct nfs4_sequence_args
*args
,
959 struct nfs4_sequence_res
*res
)
962 struct rpc_task
*task
;
963 struct nfs_client
*clp
= server
->nfs_client
;
964 struct nfs4_call_sync_data data
= {
965 .seq_server
= server
,
969 struct rpc_task_setup task_setup
= {
972 .callback_ops
= clp
->cl_mvops
->call_sync_ops
,
973 .callback_data
= &data
976 task
= rpc_run_task(&task_setup
);
980 ret
= task
->tk_status
;
986 int nfs4_call_sync(struct rpc_clnt
*clnt
,
987 struct nfs_server
*server
,
988 struct rpc_message
*msg
,
989 struct nfs4_sequence_args
*args
,
990 struct nfs4_sequence_res
*res
,
993 nfs4_init_sequence(args
, res
, cache_reply
);
994 return nfs4_call_sync_sequence(clnt
, server
, msg
, args
, res
);
997 static void update_changeattr(struct inode
*dir
, struct nfs4_change_info
*cinfo
,
998 unsigned long timestamp
)
1000 struct nfs_inode
*nfsi
= NFS_I(dir
);
1002 spin_lock(&dir
->i_lock
);
1003 nfsi
->cache_validity
|= NFS_INO_INVALID_ATTR
|NFS_INO_INVALID_DATA
;
1004 if (cinfo
->atomic
&& cinfo
->before
== dir
->i_version
) {
1005 nfsi
->cache_validity
&= ~NFS_INO_REVAL_PAGECACHE
;
1006 nfsi
->attrtimeo_timestamp
= jiffies
;
1008 nfs_force_lookup_revalidate(dir
);
1009 if (cinfo
->before
!= dir
->i_version
)
1010 nfsi
->cache_validity
|= NFS_INO_INVALID_ACCESS
|
1011 NFS_INO_INVALID_ACL
;
1013 dir
->i_version
= cinfo
->after
;
1014 nfsi
->read_cache_jiffies
= timestamp
;
1015 nfsi
->attr_gencount
= nfs_inc_attr_generation_counter();
1016 nfs_fscache_invalidate(dir
);
1017 spin_unlock(&dir
->i_lock
);
1020 struct nfs4_opendata
{
1022 struct nfs_openargs o_arg
;
1023 struct nfs_openres o_res
;
1024 struct nfs_open_confirmargs c_arg
;
1025 struct nfs_open_confirmres c_res
;
1026 struct nfs4_string owner_name
;
1027 struct nfs4_string group_name
;
1028 struct nfs4_label
*a_label
;
1029 struct nfs_fattr f_attr
;
1030 struct nfs4_label
*f_label
;
1032 struct dentry
*dentry
;
1033 struct nfs4_state_owner
*owner
;
1034 struct nfs4_state
*state
;
1036 unsigned long timestamp
;
1037 unsigned int rpc_done
: 1;
1038 unsigned int file_created
: 1;
1039 unsigned int is_recover
: 1;
1044 static bool nfs4_clear_cap_atomic_open_v1(struct nfs_server
*server
,
1045 int err
, struct nfs4_exception
*exception
)
1049 if (!(server
->caps
& NFS_CAP_ATOMIC_OPEN_V1
))
1051 server
->caps
&= ~NFS_CAP_ATOMIC_OPEN_V1
;
1052 exception
->retry
= 1;
1057 nfs4_map_atomic_open_share(struct nfs_server
*server
,
1058 fmode_t fmode
, int openflags
)
1062 switch (fmode
& (FMODE_READ
| FMODE_WRITE
)) {
1064 res
= NFS4_SHARE_ACCESS_READ
;
1067 res
= NFS4_SHARE_ACCESS_WRITE
;
1069 case FMODE_READ
|FMODE_WRITE
:
1070 res
= NFS4_SHARE_ACCESS_BOTH
;
1072 if (!(server
->caps
& NFS_CAP_ATOMIC_OPEN_V1
))
1074 /* Want no delegation if we're using O_DIRECT */
1075 if (openflags
& O_DIRECT
)
1076 res
|= NFS4_SHARE_WANT_NO_DELEG
;
1081 static enum open_claim_type4
1082 nfs4_map_atomic_open_claim(struct nfs_server
*server
,
1083 enum open_claim_type4 claim
)
1085 if (server
->caps
& NFS_CAP_ATOMIC_OPEN_V1
)
1090 case NFS4_OPEN_CLAIM_FH
:
1091 return NFS4_OPEN_CLAIM_NULL
;
1092 case NFS4_OPEN_CLAIM_DELEG_CUR_FH
:
1093 return NFS4_OPEN_CLAIM_DELEGATE_CUR
;
1094 case NFS4_OPEN_CLAIM_DELEG_PREV_FH
:
1095 return NFS4_OPEN_CLAIM_DELEGATE_PREV
;
1099 static void nfs4_init_opendata_res(struct nfs4_opendata
*p
)
1101 p
->o_res
.f_attr
= &p
->f_attr
;
1102 p
->o_res
.f_label
= p
->f_label
;
1103 p
->o_res
.seqid
= p
->o_arg
.seqid
;
1104 p
->c_res
.seqid
= p
->c_arg
.seqid
;
1105 p
->o_res
.server
= p
->o_arg
.server
;
1106 p
->o_res
.access_request
= p
->o_arg
.access
;
1107 nfs_fattr_init(&p
->f_attr
);
1108 nfs_fattr_init_names(&p
->f_attr
, &p
->owner_name
, &p
->group_name
);
1111 static struct nfs4_opendata
*nfs4_opendata_alloc(struct dentry
*dentry
,
1112 struct nfs4_state_owner
*sp
, fmode_t fmode
, int flags
,
1113 const struct iattr
*attrs
,
1114 struct nfs4_label
*label
,
1115 enum open_claim_type4 claim
,
1118 struct dentry
*parent
= dget_parent(dentry
);
1119 struct inode
*dir
= d_inode(parent
);
1120 struct nfs_server
*server
= NFS_SERVER(dir
);
1121 struct nfs_seqid
*(*alloc_seqid
)(struct nfs_seqid_counter
*, gfp_t
);
1122 struct nfs4_opendata
*p
;
1124 p
= kzalloc(sizeof(*p
), gfp_mask
);
1128 p
->f_label
= nfs4_label_alloc(server
, gfp_mask
);
1129 if (IS_ERR(p
->f_label
))
1132 p
->a_label
= nfs4_label_alloc(server
, gfp_mask
);
1133 if (IS_ERR(p
->a_label
))
1136 alloc_seqid
= server
->nfs_client
->cl_mvops
->alloc_seqid
;
1137 p
->o_arg
.seqid
= alloc_seqid(&sp
->so_seqid
, gfp_mask
);
1138 if (IS_ERR(p
->o_arg
.seqid
))
1139 goto err_free_label
;
1140 nfs_sb_active(dentry
->d_sb
);
1141 p
->dentry
= dget(dentry
);
1144 atomic_inc(&sp
->so_count
);
1145 p
->o_arg
.open_flags
= flags
;
1146 p
->o_arg
.fmode
= fmode
& (FMODE_READ
|FMODE_WRITE
);
1147 p
->o_arg
.umask
= current_umask();
1148 p
->o_arg
.claim
= nfs4_map_atomic_open_claim(server
, claim
);
1149 p
->o_arg
.share_access
= nfs4_map_atomic_open_share(server
,
1151 /* don't put an ACCESS op in OPEN compound if O_EXCL, because ACCESS
1152 * will return permission denied for all bits until close */
1153 if (!(flags
& O_EXCL
)) {
1154 /* ask server to check for all possible rights as results
1156 switch (p
->o_arg
.claim
) {
1159 case NFS4_OPEN_CLAIM_NULL
:
1160 case NFS4_OPEN_CLAIM_FH
:
1161 p
->o_arg
.access
= NFS4_ACCESS_READ
|
1162 NFS4_ACCESS_MODIFY
|
1163 NFS4_ACCESS_EXTEND
|
1164 NFS4_ACCESS_EXECUTE
;
1167 p
->o_arg
.clientid
= server
->nfs_client
->cl_clientid
;
1168 p
->o_arg
.id
.create_time
= ktime_to_ns(sp
->so_seqid
.create_time
);
1169 p
->o_arg
.id
.uniquifier
= sp
->so_seqid
.owner_id
;
1170 p
->o_arg
.name
= &dentry
->d_name
;
1171 p
->o_arg
.server
= server
;
1172 p
->o_arg
.bitmask
= nfs4_bitmask(server
, label
);
1173 p
->o_arg
.open_bitmap
= &nfs4_fattr_bitmap
[0];
1174 p
->o_arg
.label
= nfs4_label_copy(p
->a_label
, label
);
1175 switch (p
->o_arg
.claim
) {
1176 case NFS4_OPEN_CLAIM_NULL
:
1177 case NFS4_OPEN_CLAIM_DELEGATE_CUR
:
1178 case NFS4_OPEN_CLAIM_DELEGATE_PREV
:
1179 p
->o_arg
.fh
= NFS_FH(dir
);
1181 case NFS4_OPEN_CLAIM_PREVIOUS
:
1182 case NFS4_OPEN_CLAIM_FH
:
1183 case NFS4_OPEN_CLAIM_DELEG_CUR_FH
:
1184 case NFS4_OPEN_CLAIM_DELEG_PREV_FH
:
1185 p
->o_arg
.fh
= NFS_FH(d_inode(dentry
));
1187 if (attrs
!= NULL
&& attrs
->ia_valid
!= 0) {
1190 p
->o_arg
.u
.attrs
= &p
->attrs
;
1191 memcpy(&p
->attrs
, attrs
, sizeof(p
->attrs
));
1194 verf
[1] = current
->pid
;
1195 memcpy(p
->o_arg
.u
.verifier
.data
, verf
,
1196 sizeof(p
->o_arg
.u
.verifier
.data
));
1198 p
->c_arg
.fh
= &p
->o_res
.fh
;
1199 p
->c_arg
.stateid
= &p
->o_res
.stateid
;
1200 p
->c_arg
.seqid
= p
->o_arg
.seqid
;
1201 nfs4_init_opendata_res(p
);
1202 kref_init(&p
->kref
);
1206 nfs4_label_free(p
->a_label
);
1208 nfs4_label_free(p
->f_label
);
1216 static void nfs4_opendata_free(struct kref
*kref
)
1218 struct nfs4_opendata
*p
= container_of(kref
,
1219 struct nfs4_opendata
, kref
);
1220 struct super_block
*sb
= p
->dentry
->d_sb
;
1222 nfs_free_seqid(p
->o_arg
.seqid
);
1223 nfs4_sequence_free_slot(&p
->o_res
.seq_res
);
1224 if (p
->state
!= NULL
)
1225 nfs4_put_open_state(p
->state
);
1226 nfs4_put_state_owner(p
->owner
);
1228 nfs4_label_free(p
->a_label
);
1229 nfs4_label_free(p
->f_label
);
1233 nfs_sb_deactive(sb
);
1234 nfs_fattr_free_names(&p
->f_attr
);
1235 kfree(p
->f_attr
.mdsthreshold
);
1239 static void nfs4_opendata_put(struct nfs4_opendata
*p
)
1242 kref_put(&p
->kref
, nfs4_opendata_free
);
1245 static bool nfs4_mode_match_open_stateid(struct nfs4_state
*state
,
1248 switch(fmode
& (FMODE_READ
|FMODE_WRITE
)) {
1249 case FMODE_READ
|FMODE_WRITE
:
1250 return state
->n_rdwr
!= 0;
1252 return state
->n_wronly
!= 0;
1254 return state
->n_rdonly
!= 0;
1260 static int can_open_cached(struct nfs4_state
*state
, fmode_t mode
, int open_mode
)
1264 if (open_mode
& (O_EXCL
|O_TRUNC
))
1266 switch (mode
& (FMODE_READ
|FMODE_WRITE
)) {
1268 ret
|= test_bit(NFS_O_RDONLY_STATE
, &state
->flags
) != 0
1269 && state
->n_rdonly
!= 0;
1272 ret
|= test_bit(NFS_O_WRONLY_STATE
, &state
->flags
) != 0
1273 && state
->n_wronly
!= 0;
1275 case FMODE_READ
|FMODE_WRITE
:
1276 ret
|= test_bit(NFS_O_RDWR_STATE
, &state
->flags
) != 0
1277 && state
->n_rdwr
!= 0;
1283 static int can_open_delegated(struct nfs_delegation
*delegation
, fmode_t fmode
,
1284 enum open_claim_type4 claim
)
1286 if (delegation
== NULL
)
1288 if ((delegation
->type
& fmode
) != fmode
)
1290 if (test_bit(NFS_DELEGATION_RETURNING
, &delegation
->flags
))
1293 case NFS4_OPEN_CLAIM_NULL
:
1294 case NFS4_OPEN_CLAIM_FH
:
1296 case NFS4_OPEN_CLAIM_PREVIOUS
:
1297 if (!test_bit(NFS_DELEGATION_NEED_RECLAIM
, &delegation
->flags
))
1302 nfs_mark_delegation_referenced(delegation
);
1306 static void update_open_stateflags(struct nfs4_state
*state
, fmode_t fmode
)
1315 case FMODE_READ
|FMODE_WRITE
:
1318 nfs4_state_set_mode_locked(state
, state
->state
| fmode
);
1321 #ifdef CONFIG_NFS_V4_1
1322 static bool nfs_open_stateid_recover_openmode(struct nfs4_state
*state
)
1324 if (state
->n_rdonly
&& !test_bit(NFS_O_RDONLY_STATE
, &state
->flags
))
1326 if (state
->n_wronly
&& !test_bit(NFS_O_WRONLY_STATE
, &state
->flags
))
1328 if (state
->n_rdwr
&& !test_bit(NFS_O_RDWR_STATE
, &state
->flags
))
1332 #endif /* CONFIG_NFS_V4_1 */
1334 static void nfs_test_and_clear_all_open_stateid(struct nfs4_state
*state
)
1336 struct nfs_client
*clp
= state
->owner
->so_server
->nfs_client
;
1337 bool need_recover
= false;
1339 if (test_and_clear_bit(NFS_O_RDONLY_STATE
, &state
->flags
) && state
->n_rdonly
)
1340 need_recover
= true;
1341 if (test_and_clear_bit(NFS_O_WRONLY_STATE
, &state
->flags
) && state
->n_wronly
)
1342 need_recover
= true;
1343 if (test_and_clear_bit(NFS_O_RDWR_STATE
, &state
->flags
) && state
->n_rdwr
)
1344 need_recover
= true;
1346 nfs4_state_mark_reclaim_nograce(clp
, state
);
1349 static bool nfs_need_update_open_stateid(struct nfs4_state
*state
,
1350 const nfs4_stateid
*stateid
, nfs4_stateid
*freeme
)
1352 if (test_and_set_bit(NFS_OPEN_STATE
, &state
->flags
) == 0)
1354 if (!nfs4_stateid_match_other(stateid
, &state
->open_stateid
)) {
1355 nfs4_stateid_copy(freeme
, &state
->open_stateid
);
1356 nfs_test_and_clear_all_open_stateid(state
);
1359 if (nfs4_stateid_is_newer(stateid
, &state
->open_stateid
))
1364 static void nfs_resync_open_stateid_locked(struct nfs4_state
*state
)
1366 if (!(state
->n_wronly
|| state
->n_rdonly
|| state
->n_rdwr
))
1368 if (state
->n_wronly
)
1369 set_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
1370 if (state
->n_rdonly
)
1371 set_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
1373 set_bit(NFS_O_RDWR_STATE
, &state
->flags
);
1374 set_bit(NFS_OPEN_STATE
, &state
->flags
);
1377 static void nfs_clear_open_stateid_locked(struct nfs4_state
*state
,
1378 nfs4_stateid
*stateid
, fmode_t fmode
)
1380 clear_bit(NFS_O_RDWR_STATE
, &state
->flags
);
1381 switch (fmode
& (FMODE_READ
|FMODE_WRITE
)) {
1383 clear_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
1386 clear_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
1389 clear_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
1390 clear_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
1391 clear_bit(NFS_OPEN_STATE
, &state
->flags
);
1393 if (stateid
== NULL
)
1395 /* Handle OPEN+OPEN_DOWNGRADE races */
1396 if (nfs4_stateid_match_other(stateid
, &state
->open_stateid
) &&
1397 !nfs4_stateid_is_newer(stateid
, &state
->open_stateid
)) {
1398 nfs_resync_open_stateid_locked(state
);
1401 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) == 0)
1402 nfs4_stateid_copy(&state
->stateid
, stateid
);
1403 nfs4_stateid_copy(&state
->open_stateid
, stateid
);
1406 static void nfs_clear_open_stateid(struct nfs4_state
*state
,
1407 nfs4_stateid
*arg_stateid
,
1408 nfs4_stateid
*stateid
, fmode_t fmode
)
1410 write_seqlock(&state
->seqlock
);
1411 /* Ignore, if the CLOSE argment doesn't match the current stateid */
1412 if (nfs4_state_match_open_stateid_other(state
, arg_stateid
))
1413 nfs_clear_open_stateid_locked(state
, stateid
, fmode
);
1414 write_sequnlock(&state
->seqlock
);
1415 if (test_bit(NFS_STATE_RECLAIM_NOGRACE
, &state
->flags
))
1416 nfs4_schedule_state_manager(state
->owner
->so_server
->nfs_client
);
1419 static void nfs_set_open_stateid_locked(struct nfs4_state
*state
,
1420 const nfs4_stateid
*stateid
, fmode_t fmode
,
1421 nfs4_stateid
*freeme
)
1425 set_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
1428 set_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
1430 case FMODE_READ
|FMODE_WRITE
:
1431 set_bit(NFS_O_RDWR_STATE
, &state
->flags
);
1433 if (!nfs_need_update_open_stateid(state
, stateid
, freeme
))
1435 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) == 0)
1436 nfs4_stateid_copy(&state
->stateid
, stateid
);
1437 nfs4_stateid_copy(&state
->open_stateid
, stateid
);
1440 static void __update_open_stateid(struct nfs4_state
*state
,
1441 const nfs4_stateid
*open_stateid
,
1442 const nfs4_stateid
*deleg_stateid
,
1444 nfs4_stateid
*freeme
)
1447 * Protect the call to nfs4_state_set_mode_locked and
1448 * serialise the stateid update
1450 spin_lock(&state
->owner
->so_lock
);
1451 write_seqlock(&state
->seqlock
);
1452 if (deleg_stateid
!= NULL
) {
1453 nfs4_stateid_copy(&state
->stateid
, deleg_stateid
);
1454 set_bit(NFS_DELEGATED_STATE
, &state
->flags
);
1456 if (open_stateid
!= NULL
)
1457 nfs_set_open_stateid_locked(state
, open_stateid
, fmode
, freeme
);
1458 write_sequnlock(&state
->seqlock
);
1459 update_open_stateflags(state
, fmode
);
1460 spin_unlock(&state
->owner
->so_lock
);
1463 static int update_open_stateid(struct nfs4_state
*state
,
1464 const nfs4_stateid
*open_stateid
,
1465 const nfs4_stateid
*delegation
,
1468 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
1469 struct nfs_client
*clp
= server
->nfs_client
;
1470 struct nfs_inode
*nfsi
= NFS_I(state
->inode
);
1471 struct nfs_delegation
*deleg_cur
;
1472 nfs4_stateid freeme
= { };
1475 fmode
&= (FMODE_READ
|FMODE_WRITE
);
1478 deleg_cur
= rcu_dereference(nfsi
->delegation
);
1479 if (deleg_cur
== NULL
)
1482 spin_lock(&deleg_cur
->lock
);
1483 if (rcu_dereference(nfsi
->delegation
) != deleg_cur
||
1484 test_bit(NFS_DELEGATION_RETURNING
, &deleg_cur
->flags
) ||
1485 (deleg_cur
->type
& fmode
) != fmode
)
1486 goto no_delegation_unlock
;
1488 if (delegation
== NULL
)
1489 delegation
= &deleg_cur
->stateid
;
1490 else if (!nfs4_stateid_match(&deleg_cur
->stateid
, delegation
))
1491 goto no_delegation_unlock
;
1493 nfs_mark_delegation_referenced(deleg_cur
);
1494 __update_open_stateid(state
, open_stateid
, &deleg_cur
->stateid
,
1497 no_delegation_unlock
:
1498 spin_unlock(&deleg_cur
->lock
);
1502 if (!ret
&& open_stateid
!= NULL
) {
1503 __update_open_stateid(state
, open_stateid
, NULL
, fmode
, &freeme
);
1506 if (test_bit(NFS_STATE_RECLAIM_NOGRACE
, &state
->flags
))
1507 nfs4_schedule_state_manager(clp
);
1508 if (freeme
.type
!= 0)
1509 nfs4_test_and_free_stateid(server
, &freeme
,
1510 state
->owner
->so_cred
);
1515 static bool nfs4_update_lock_stateid(struct nfs4_lock_state
*lsp
,
1516 const nfs4_stateid
*stateid
)
1518 struct nfs4_state
*state
= lsp
->ls_state
;
1521 spin_lock(&state
->state_lock
);
1522 if (!nfs4_stateid_match_other(stateid
, &lsp
->ls_stateid
))
1524 if (!nfs4_stateid_is_newer(stateid
, &lsp
->ls_stateid
))
1526 nfs4_stateid_copy(&lsp
->ls_stateid
, stateid
);
1529 spin_unlock(&state
->state_lock
);
1533 static void nfs4_return_incompatible_delegation(struct inode
*inode
, fmode_t fmode
)
1535 struct nfs_delegation
*delegation
;
1538 delegation
= rcu_dereference(NFS_I(inode
)->delegation
);
1539 if (delegation
== NULL
|| (delegation
->type
& fmode
) == fmode
) {
1544 nfs4_inode_return_delegation(inode
);
1547 static struct nfs4_state
*nfs4_try_open_cached(struct nfs4_opendata
*opendata
)
1549 struct nfs4_state
*state
= opendata
->state
;
1550 struct nfs_inode
*nfsi
= NFS_I(state
->inode
);
1551 struct nfs_delegation
*delegation
;
1552 int open_mode
= opendata
->o_arg
.open_flags
;
1553 fmode_t fmode
= opendata
->o_arg
.fmode
;
1554 enum open_claim_type4 claim
= opendata
->o_arg
.claim
;
1555 nfs4_stateid stateid
;
1559 spin_lock(&state
->owner
->so_lock
);
1560 if (can_open_cached(state
, fmode
, open_mode
)) {
1561 update_open_stateflags(state
, fmode
);
1562 spin_unlock(&state
->owner
->so_lock
);
1563 goto out_return_state
;
1565 spin_unlock(&state
->owner
->so_lock
);
1567 delegation
= rcu_dereference(nfsi
->delegation
);
1568 if (!can_open_delegated(delegation
, fmode
, claim
)) {
1572 /* Save the delegation */
1573 nfs4_stateid_copy(&stateid
, &delegation
->stateid
);
1575 nfs_release_seqid(opendata
->o_arg
.seqid
);
1576 if (!opendata
->is_recover
) {
1577 ret
= nfs_may_open(state
->inode
, state
->owner
->so_cred
, open_mode
);
1583 /* Try to update the stateid using the delegation */
1584 if (update_open_stateid(state
, NULL
, &stateid
, fmode
))
1585 goto out_return_state
;
1588 return ERR_PTR(ret
);
1590 atomic_inc(&state
->count
);
1595 nfs4_opendata_check_deleg(struct nfs4_opendata
*data
, struct nfs4_state
*state
)
1597 struct nfs_client
*clp
= NFS_SERVER(state
->inode
)->nfs_client
;
1598 struct nfs_delegation
*delegation
;
1599 int delegation_flags
= 0;
1602 delegation
= rcu_dereference(NFS_I(state
->inode
)->delegation
);
1604 delegation_flags
= delegation
->flags
;
1606 switch (data
->o_arg
.claim
) {
1609 case NFS4_OPEN_CLAIM_DELEGATE_CUR
:
1610 case NFS4_OPEN_CLAIM_DELEG_CUR_FH
:
1611 pr_err_ratelimited("NFS: Broken NFSv4 server %s is "
1612 "returning a delegation for "
1613 "OPEN(CLAIM_DELEGATE_CUR)\n",
1617 if ((delegation_flags
& 1UL<<NFS_DELEGATION_NEED_RECLAIM
) == 0)
1618 nfs_inode_set_delegation(state
->inode
,
1619 data
->owner
->so_cred
,
1622 nfs_inode_reclaim_delegation(state
->inode
,
1623 data
->owner
->so_cred
,
1628 * Check the inode attributes against the CLAIM_PREVIOUS returned attributes
1629 * and update the nfs4_state.
1631 static struct nfs4_state
*
1632 _nfs4_opendata_reclaim_to_nfs4_state(struct nfs4_opendata
*data
)
1634 struct inode
*inode
= data
->state
->inode
;
1635 struct nfs4_state
*state
= data
->state
;
1638 if (!data
->rpc_done
) {
1639 if (data
->rpc_status
)
1640 return ERR_PTR(data
->rpc_status
);
1641 /* cached opens have already been processed */
1645 ret
= nfs_refresh_inode(inode
, &data
->f_attr
);
1647 return ERR_PTR(ret
);
1649 if (data
->o_res
.delegation_type
!= 0)
1650 nfs4_opendata_check_deleg(data
, state
);
1652 update_open_stateid(state
, &data
->o_res
.stateid
, NULL
,
1654 atomic_inc(&state
->count
);
1659 static struct nfs4_state
*
1660 _nfs4_opendata_to_nfs4_state(struct nfs4_opendata
*data
)
1662 struct inode
*inode
;
1663 struct nfs4_state
*state
= NULL
;
1666 if (!data
->rpc_done
) {
1667 state
= nfs4_try_open_cached(data
);
1668 trace_nfs4_cached_open(data
->state
);
1673 if (!(data
->f_attr
.valid
& NFS_ATTR_FATTR
))
1675 inode
= nfs_fhget(data
->dir
->d_sb
, &data
->o_res
.fh
, &data
->f_attr
, data
->f_label
);
1676 ret
= PTR_ERR(inode
);
1680 state
= nfs4_get_open_state(inode
, data
->owner
);
1683 if (data
->o_res
.delegation_type
!= 0)
1684 nfs4_opendata_check_deleg(data
, state
);
1685 update_open_stateid(state
, &data
->o_res
.stateid
, NULL
,
1689 nfs_release_seqid(data
->o_arg
.seqid
);
1694 return ERR_PTR(ret
);
1697 static struct nfs4_state
*
1698 nfs4_opendata_to_nfs4_state(struct nfs4_opendata
*data
)
1700 struct nfs4_state
*ret
;
1702 if (data
->o_arg
.claim
== NFS4_OPEN_CLAIM_PREVIOUS
)
1703 ret
=_nfs4_opendata_reclaim_to_nfs4_state(data
);
1705 ret
= _nfs4_opendata_to_nfs4_state(data
);
1706 nfs4_sequence_free_slot(&data
->o_res
.seq_res
);
1710 static struct nfs_open_context
*nfs4_state_find_open_context(struct nfs4_state
*state
)
1712 struct nfs_inode
*nfsi
= NFS_I(state
->inode
);
1713 struct nfs_open_context
*ctx
;
1715 spin_lock(&state
->inode
->i_lock
);
1716 list_for_each_entry(ctx
, &nfsi
->open_files
, list
) {
1717 if (ctx
->state
!= state
)
1719 get_nfs_open_context(ctx
);
1720 spin_unlock(&state
->inode
->i_lock
);
1723 spin_unlock(&state
->inode
->i_lock
);
1724 return ERR_PTR(-ENOENT
);
1727 static struct nfs4_opendata
*nfs4_open_recoverdata_alloc(struct nfs_open_context
*ctx
,
1728 struct nfs4_state
*state
, enum open_claim_type4 claim
)
1730 struct nfs4_opendata
*opendata
;
1732 opendata
= nfs4_opendata_alloc(ctx
->dentry
, state
->owner
, 0, 0,
1733 NULL
, NULL
, claim
, GFP_NOFS
);
1734 if (opendata
== NULL
)
1735 return ERR_PTR(-ENOMEM
);
1736 opendata
->state
= state
;
1737 atomic_inc(&state
->count
);
1741 static int nfs4_open_recover_helper(struct nfs4_opendata
*opendata
,
1744 struct nfs4_state
*newstate
;
1747 if (!nfs4_mode_match_open_stateid(opendata
->state
, fmode
))
1749 opendata
->o_arg
.open_flags
= 0;
1750 opendata
->o_arg
.fmode
= fmode
;
1751 opendata
->o_arg
.share_access
= nfs4_map_atomic_open_share(
1752 NFS_SB(opendata
->dentry
->d_sb
),
1754 memset(&opendata
->o_res
, 0, sizeof(opendata
->o_res
));
1755 memset(&opendata
->c_res
, 0, sizeof(opendata
->c_res
));
1756 nfs4_init_opendata_res(opendata
);
1757 ret
= _nfs4_recover_proc_open(opendata
);
1760 newstate
= nfs4_opendata_to_nfs4_state(opendata
);
1761 if (IS_ERR(newstate
))
1762 return PTR_ERR(newstate
);
1763 if (newstate
!= opendata
->state
)
1765 nfs4_close_state(newstate
, fmode
);
1769 static int nfs4_open_recover(struct nfs4_opendata
*opendata
, struct nfs4_state
*state
)
1773 /* Don't trigger recovery in nfs_test_and_clear_all_open_stateid */
1774 clear_bit(NFS_O_RDWR_STATE
, &state
->flags
);
1775 clear_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
1776 clear_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
1777 /* memory barrier prior to reading state->n_* */
1778 clear_bit(NFS_DELEGATED_STATE
, &state
->flags
);
1779 clear_bit(NFS_OPEN_STATE
, &state
->flags
);
1781 ret
= nfs4_open_recover_helper(opendata
, FMODE_READ
|FMODE_WRITE
);
1784 ret
= nfs4_open_recover_helper(opendata
, FMODE_WRITE
);
1787 ret
= nfs4_open_recover_helper(opendata
, FMODE_READ
);
1791 * We may have performed cached opens for all three recoveries.
1792 * Check if we need to update the current stateid.
1794 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) == 0 &&
1795 !nfs4_stateid_match(&state
->stateid
, &state
->open_stateid
)) {
1796 write_seqlock(&state
->seqlock
);
1797 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) == 0)
1798 nfs4_stateid_copy(&state
->stateid
, &state
->open_stateid
);
1799 write_sequnlock(&state
->seqlock
);
1806 * reclaim state on the server after a reboot.
1808 static int _nfs4_do_open_reclaim(struct nfs_open_context
*ctx
, struct nfs4_state
*state
)
1810 struct nfs_delegation
*delegation
;
1811 struct nfs4_opendata
*opendata
;
1812 fmode_t delegation_type
= 0;
1815 opendata
= nfs4_open_recoverdata_alloc(ctx
, state
,
1816 NFS4_OPEN_CLAIM_PREVIOUS
);
1817 if (IS_ERR(opendata
))
1818 return PTR_ERR(opendata
);
1820 delegation
= rcu_dereference(NFS_I(state
->inode
)->delegation
);
1821 if (delegation
!= NULL
&& test_bit(NFS_DELEGATION_NEED_RECLAIM
, &delegation
->flags
) != 0)
1822 delegation_type
= delegation
->type
;
1824 opendata
->o_arg
.u
.delegation_type
= delegation_type
;
1825 status
= nfs4_open_recover(opendata
, state
);
1826 nfs4_opendata_put(opendata
);
1830 static int nfs4_do_open_reclaim(struct nfs_open_context
*ctx
, struct nfs4_state
*state
)
1832 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
1833 struct nfs4_exception exception
= { };
1836 err
= _nfs4_do_open_reclaim(ctx
, state
);
1837 trace_nfs4_open_reclaim(ctx
, 0, err
);
1838 if (nfs4_clear_cap_atomic_open_v1(server
, err
, &exception
))
1840 if (err
!= -NFS4ERR_DELAY
)
1842 nfs4_handle_exception(server
, err
, &exception
);
1843 } while (exception
.retry
);
1847 static int nfs4_open_reclaim(struct nfs4_state_owner
*sp
, struct nfs4_state
*state
)
1849 struct nfs_open_context
*ctx
;
1852 ctx
= nfs4_state_find_open_context(state
);
1855 ret
= nfs4_do_open_reclaim(ctx
, state
);
1856 put_nfs_open_context(ctx
);
1860 static int nfs4_handle_delegation_recall_error(struct nfs_server
*server
, struct nfs4_state
*state
, const nfs4_stateid
*stateid
, int err
)
1864 printk(KERN_ERR
"NFS: %s: unhandled error "
1865 "%d.\n", __func__
, err
);
1871 case -NFS4ERR_BADSESSION
:
1872 case -NFS4ERR_BADSLOT
:
1873 case -NFS4ERR_BAD_HIGH_SLOT
:
1874 case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION
:
1875 case -NFS4ERR_DEADSESSION
:
1876 set_bit(NFS_DELEGATED_STATE
, &state
->flags
);
1877 nfs4_schedule_session_recovery(server
->nfs_client
->cl_session
, err
);
1879 case -NFS4ERR_STALE_CLIENTID
:
1880 case -NFS4ERR_STALE_STATEID
:
1881 set_bit(NFS_DELEGATED_STATE
, &state
->flags
);
1882 /* Don't recall a delegation if it was lost */
1883 nfs4_schedule_lease_recovery(server
->nfs_client
);
1885 case -NFS4ERR_MOVED
:
1886 nfs4_schedule_migration_recovery(server
);
1888 case -NFS4ERR_LEASE_MOVED
:
1889 nfs4_schedule_lease_moved_recovery(server
->nfs_client
);
1891 case -NFS4ERR_DELEG_REVOKED
:
1892 case -NFS4ERR_ADMIN_REVOKED
:
1893 case -NFS4ERR_EXPIRED
:
1894 case -NFS4ERR_BAD_STATEID
:
1895 case -NFS4ERR_OPENMODE
:
1896 nfs_inode_find_state_and_recover(state
->inode
,
1898 nfs4_schedule_stateid_recovery(server
, state
);
1900 case -NFS4ERR_DELAY
:
1901 case -NFS4ERR_GRACE
:
1902 set_bit(NFS_DELEGATED_STATE
, &state
->flags
);
1906 case -NFS4ERR_DENIED
:
1907 /* kill_proc(fl->fl_pid, SIGLOST, 1); */
1913 int nfs4_open_delegation_recall(struct nfs_open_context
*ctx
,
1914 struct nfs4_state
*state
, const nfs4_stateid
*stateid
,
1917 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
1918 struct nfs4_opendata
*opendata
;
1921 opendata
= nfs4_open_recoverdata_alloc(ctx
, state
,
1922 NFS4_OPEN_CLAIM_DELEG_CUR_FH
);
1923 if (IS_ERR(opendata
))
1924 return PTR_ERR(opendata
);
1925 nfs4_stateid_copy(&opendata
->o_arg
.u
.delegation
, stateid
);
1926 write_seqlock(&state
->seqlock
);
1927 nfs4_stateid_copy(&state
->stateid
, &state
->open_stateid
);
1928 write_sequnlock(&state
->seqlock
);
1929 clear_bit(NFS_DELEGATED_STATE
, &state
->flags
);
1930 switch (type
& (FMODE_READ
|FMODE_WRITE
)) {
1931 case FMODE_READ
|FMODE_WRITE
:
1933 err
= nfs4_open_recover_helper(opendata
, FMODE_READ
|FMODE_WRITE
);
1936 err
= nfs4_open_recover_helper(opendata
, FMODE_WRITE
);
1940 err
= nfs4_open_recover_helper(opendata
, FMODE_READ
);
1942 nfs4_opendata_put(opendata
);
1943 return nfs4_handle_delegation_recall_error(server
, state
, stateid
, err
);
1946 static void nfs4_open_confirm_prepare(struct rpc_task
*task
, void *calldata
)
1948 struct nfs4_opendata
*data
= calldata
;
1950 nfs4_setup_sequence(data
->o_arg
.server
->nfs_client
,
1951 &data
->c_arg
.seq_args
, &data
->c_res
.seq_res
, task
);
1954 static void nfs4_open_confirm_done(struct rpc_task
*task
, void *calldata
)
1956 struct nfs4_opendata
*data
= calldata
;
1958 nfs40_sequence_done(task
, &data
->c_res
.seq_res
);
1960 data
->rpc_status
= task
->tk_status
;
1961 if (data
->rpc_status
== 0) {
1962 nfs4_stateid_copy(&data
->o_res
.stateid
, &data
->c_res
.stateid
);
1963 nfs_confirm_seqid(&data
->owner
->so_seqid
, 0);
1964 renew_lease(data
->o_res
.server
, data
->timestamp
);
1969 static void nfs4_open_confirm_release(void *calldata
)
1971 struct nfs4_opendata
*data
= calldata
;
1972 struct nfs4_state
*state
= NULL
;
1974 /* If this request hasn't been cancelled, do nothing */
1975 if (data
->cancelled
== 0)
1977 /* In case of error, no cleanup! */
1978 if (!data
->rpc_done
)
1980 state
= nfs4_opendata_to_nfs4_state(data
);
1982 nfs4_close_state(state
, data
->o_arg
.fmode
);
1984 nfs4_opendata_put(data
);
1987 static const struct rpc_call_ops nfs4_open_confirm_ops
= {
1988 .rpc_call_prepare
= nfs4_open_confirm_prepare
,
1989 .rpc_call_done
= nfs4_open_confirm_done
,
1990 .rpc_release
= nfs4_open_confirm_release
,
1994 * Note: On error, nfs4_proc_open_confirm will free the struct nfs4_opendata
1996 static int _nfs4_proc_open_confirm(struct nfs4_opendata
*data
)
1998 struct nfs_server
*server
= NFS_SERVER(d_inode(data
->dir
));
1999 struct rpc_task
*task
;
2000 struct rpc_message msg
= {
2001 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_OPEN_CONFIRM
],
2002 .rpc_argp
= &data
->c_arg
,
2003 .rpc_resp
= &data
->c_res
,
2004 .rpc_cred
= data
->owner
->so_cred
,
2006 struct rpc_task_setup task_setup_data
= {
2007 .rpc_client
= server
->client
,
2008 .rpc_message
= &msg
,
2009 .callback_ops
= &nfs4_open_confirm_ops
,
2010 .callback_data
= data
,
2011 .workqueue
= nfsiod_workqueue
,
2012 .flags
= RPC_TASK_ASYNC
,
2016 nfs4_init_sequence(&data
->c_arg
.seq_args
, &data
->c_res
.seq_res
, 1);
2017 kref_get(&data
->kref
);
2019 data
->rpc_status
= 0;
2020 data
->timestamp
= jiffies
;
2021 if (data
->is_recover
)
2022 nfs4_set_sequence_privileged(&data
->c_arg
.seq_args
);
2023 task
= rpc_run_task(&task_setup_data
);
2025 return PTR_ERR(task
);
2026 status
= rpc_wait_for_completion_task(task
);
2028 data
->cancelled
= 1;
2031 status
= data
->rpc_status
;
2036 static void nfs4_open_prepare(struct rpc_task
*task
, void *calldata
)
2038 struct nfs4_opendata
*data
= calldata
;
2039 struct nfs4_state_owner
*sp
= data
->owner
;
2040 struct nfs_client
*clp
= sp
->so_server
->nfs_client
;
2041 enum open_claim_type4 claim
= data
->o_arg
.claim
;
2043 if (nfs_wait_on_sequence(data
->o_arg
.seqid
, task
) != 0)
2046 * Check if we still need to send an OPEN call, or if we can use
2047 * a delegation instead.
2049 if (data
->state
!= NULL
) {
2050 struct nfs_delegation
*delegation
;
2052 if (can_open_cached(data
->state
, data
->o_arg
.fmode
, data
->o_arg
.open_flags
))
2055 delegation
= rcu_dereference(NFS_I(data
->state
->inode
)->delegation
);
2056 if (can_open_delegated(delegation
, data
->o_arg
.fmode
, claim
))
2057 goto unlock_no_action
;
2060 /* Update client id. */
2061 data
->o_arg
.clientid
= clp
->cl_clientid
;
2065 case NFS4_OPEN_CLAIM_PREVIOUS
:
2066 case NFS4_OPEN_CLAIM_DELEG_CUR_FH
:
2067 case NFS4_OPEN_CLAIM_DELEG_PREV_FH
:
2068 data
->o_arg
.open_bitmap
= &nfs4_open_noattr_bitmap
[0];
2069 case NFS4_OPEN_CLAIM_FH
:
2070 task
->tk_msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_OPEN_NOATTR
];
2071 nfs_copy_fh(&data
->o_res
.fh
, data
->o_arg
.fh
);
2073 data
->timestamp
= jiffies
;
2074 if (nfs4_setup_sequence(data
->o_arg
.server
->nfs_client
,
2075 &data
->o_arg
.seq_args
,
2076 &data
->o_res
.seq_res
,
2078 nfs_release_seqid(data
->o_arg
.seqid
);
2080 /* Set the create mode (note dependency on the session type) */
2081 data
->o_arg
.createmode
= NFS4_CREATE_UNCHECKED
;
2082 if (data
->o_arg
.open_flags
& O_EXCL
) {
2083 data
->o_arg
.createmode
= NFS4_CREATE_EXCLUSIVE
;
2084 if (nfs4_has_persistent_session(clp
))
2085 data
->o_arg
.createmode
= NFS4_CREATE_GUARDED
;
2086 else if (clp
->cl_mvops
->minor_version
> 0)
2087 data
->o_arg
.createmode
= NFS4_CREATE_EXCLUSIVE4_1
;
2091 trace_nfs4_cached_open(data
->state
);
2094 task
->tk_action
= NULL
;
2096 nfs4_sequence_done(task
, &data
->o_res
.seq_res
);
2099 static void nfs4_open_done(struct rpc_task
*task
, void *calldata
)
2101 struct nfs4_opendata
*data
= calldata
;
2103 data
->rpc_status
= task
->tk_status
;
2105 if (!nfs4_sequence_process(task
, &data
->o_res
.seq_res
))
2108 if (task
->tk_status
== 0) {
2109 if (data
->o_res
.f_attr
->valid
& NFS_ATTR_FATTR_TYPE
) {
2110 switch (data
->o_res
.f_attr
->mode
& S_IFMT
) {
2114 data
->rpc_status
= -ELOOP
;
2117 data
->rpc_status
= -EISDIR
;
2120 data
->rpc_status
= -ENOTDIR
;
2123 renew_lease(data
->o_res
.server
, data
->timestamp
);
2124 if (!(data
->o_res
.rflags
& NFS4_OPEN_RESULT_CONFIRM
))
2125 nfs_confirm_seqid(&data
->owner
->so_seqid
, 0);
2130 static void nfs4_open_release(void *calldata
)
2132 struct nfs4_opendata
*data
= calldata
;
2133 struct nfs4_state
*state
= NULL
;
2135 /* If this request hasn't been cancelled, do nothing */
2136 if (data
->cancelled
== 0)
2138 /* In case of error, no cleanup! */
2139 if (data
->rpc_status
!= 0 || !data
->rpc_done
)
2141 /* In case we need an open_confirm, no cleanup! */
2142 if (data
->o_res
.rflags
& NFS4_OPEN_RESULT_CONFIRM
)
2144 state
= nfs4_opendata_to_nfs4_state(data
);
2146 nfs4_close_state(state
, data
->o_arg
.fmode
);
2148 nfs4_opendata_put(data
);
2151 static const struct rpc_call_ops nfs4_open_ops
= {
2152 .rpc_call_prepare
= nfs4_open_prepare
,
2153 .rpc_call_done
= nfs4_open_done
,
2154 .rpc_release
= nfs4_open_release
,
2157 static int nfs4_run_open_task(struct nfs4_opendata
*data
, int isrecover
)
2159 struct inode
*dir
= d_inode(data
->dir
);
2160 struct nfs_server
*server
= NFS_SERVER(dir
);
2161 struct nfs_openargs
*o_arg
= &data
->o_arg
;
2162 struct nfs_openres
*o_res
= &data
->o_res
;
2163 struct rpc_task
*task
;
2164 struct rpc_message msg
= {
2165 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_OPEN
],
2168 .rpc_cred
= data
->owner
->so_cred
,
2170 struct rpc_task_setup task_setup_data
= {
2171 .rpc_client
= server
->client
,
2172 .rpc_message
= &msg
,
2173 .callback_ops
= &nfs4_open_ops
,
2174 .callback_data
= data
,
2175 .workqueue
= nfsiod_workqueue
,
2176 .flags
= RPC_TASK_ASYNC
,
2180 nfs4_init_sequence(&o_arg
->seq_args
, &o_res
->seq_res
, 1);
2181 kref_get(&data
->kref
);
2183 data
->rpc_status
= 0;
2184 data
->cancelled
= 0;
2185 data
->is_recover
= 0;
2187 nfs4_set_sequence_privileged(&o_arg
->seq_args
);
2188 data
->is_recover
= 1;
2190 task
= rpc_run_task(&task_setup_data
);
2192 return PTR_ERR(task
);
2193 status
= rpc_wait_for_completion_task(task
);
2195 data
->cancelled
= 1;
2198 status
= data
->rpc_status
;
2204 static int _nfs4_recover_proc_open(struct nfs4_opendata
*data
)
2206 struct inode
*dir
= d_inode(data
->dir
);
2207 struct nfs_openres
*o_res
= &data
->o_res
;
2210 status
= nfs4_run_open_task(data
, 1);
2211 if (status
!= 0 || !data
->rpc_done
)
2214 nfs_fattr_map_and_free_names(NFS_SERVER(dir
), &data
->f_attr
);
2216 if (o_res
->rflags
& NFS4_OPEN_RESULT_CONFIRM
)
2217 status
= _nfs4_proc_open_confirm(data
);
2223 * Additional permission checks in order to distinguish between an
2224 * open for read, and an open for execute. This works around the
2225 * fact that NFSv4 OPEN treats read and execute permissions as being
2227 * Note that in the non-execute case, we want to turn off permission
2228 * checking if we just created a new file (POSIX open() semantics).
2230 static int nfs4_opendata_access(struct rpc_cred
*cred
,
2231 struct nfs4_opendata
*opendata
,
2232 struct nfs4_state
*state
, fmode_t fmode
,
2235 struct nfs_access_entry cache
;
2238 /* access call failed or for some reason the server doesn't
2239 * support any access modes -- defer access call until later */
2240 if (opendata
->o_res
.access_supported
== 0)
2245 * Use openflags to check for exec, because fmode won't
2246 * always have FMODE_EXEC set when file open for exec.
2248 if (openflags
& __FMODE_EXEC
) {
2249 /* ONLY check for exec rights */
2251 } else if ((fmode
& FMODE_READ
) && !opendata
->file_created
)
2255 cache
.jiffies
= jiffies
;
2256 nfs_access_set_mask(&cache
, opendata
->o_res
.access_result
);
2257 nfs_access_add_cache(state
->inode
, &cache
);
2259 if ((mask
& ~cache
.mask
& (MAY_READ
| MAY_EXEC
)) == 0)
2266 * Note: On error, nfs4_proc_open will free the struct nfs4_opendata
2268 static int _nfs4_proc_open(struct nfs4_opendata
*data
)
2270 struct inode
*dir
= d_inode(data
->dir
);
2271 struct nfs_server
*server
= NFS_SERVER(dir
);
2272 struct nfs_openargs
*o_arg
= &data
->o_arg
;
2273 struct nfs_openres
*o_res
= &data
->o_res
;
2276 status
= nfs4_run_open_task(data
, 0);
2277 if (!data
->rpc_done
)
2280 if (status
== -NFS4ERR_BADNAME
&&
2281 !(o_arg
->open_flags
& O_CREAT
))
2286 nfs_fattr_map_and_free_names(server
, &data
->f_attr
);
2288 if (o_arg
->open_flags
& O_CREAT
) {
2289 if (o_arg
->open_flags
& O_EXCL
)
2290 data
->file_created
= 1;
2291 else if (o_res
->cinfo
.before
!= o_res
->cinfo
.after
)
2292 data
->file_created
= 1;
2293 if (data
->file_created
|| dir
->i_version
!= o_res
->cinfo
.after
)
2294 update_changeattr(dir
, &o_res
->cinfo
,
2295 o_res
->f_attr
->time_start
);
2297 if ((o_res
->rflags
& NFS4_OPEN_RESULT_LOCKTYPE_POSIX
) == 0)
2298 server
->caps
&= ~NFS_CAP_POSIX_LOCK
;
2299 if(o_res
->rflags
& NFS4_OPEN_RESULT_CONFIRM
) {
2300 status
= _nfs4_proc_open_confirm(data
);
2304 if (!(o_res
->f_attr
->valid
& NFS_ATTR_FATTR
)) {
2305 nfs4_sequence_free_slot(&o_res
->seq_res
);
2306 nfs4_proc_getattr(server
, &o_res
->fh
, o_res
->f_attr
, o_res
->f_label
);
2313 * reclaim state on the server after a network partition.
2314 * Assumes caller holds the appropriate lock
2316 static int _nfs4_open_expired(struct nfs_open_context
*ctx
, struct nfs4_state
*state
)
2318 struct nfs4_opendata
*opendata
;
2321 opendata
= nfs4_open_recoverdata_alloc(ctx
, state
,
2322 NFS4_OPEN_CLAIM_FH
);
2323 if (IS_ERR(opendata
))
2324 return PTR_ERR(opendata
);
2325 ret
= nfs4_open_recover(opendata
, state
);
2327 d_drop(ctx
->dentry
);
2328 nfs4_opendata_put(opendata
);
2332 static int nfs4_do_open_expired(struct nfs_open_context
*ctx
, struct nfs4_state
*state
)
2334 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
2335 struct nfs4_exception exception
= { };
2339 err
= _nfs4_open_expired(ctx
, state
);
2340 trace_nfs4_open_expired(ctx
, 0, err
);
2341 if (nfs4_clear_cap_atomic_open_v1(server
, err
, &exception
))
2346 case -NFS4ERR_GRACE
:
2347 case -NFS4ERR_DELAY
:
2348 nfs4_handle_exception(server
, err
, &exception
);
2351 } while (exception
.retry
);
2356 static int nfs4_open_expired(struct nfs4_state_owner
*sp
, struct nfs4_state
*state
)
2358 struct nfs_open_context
*ctx
;
2361 ctx
= nfs4_state_find_open_context(state
);
2364 ret
= nfs4_do_open_expired(ctx
, state
);
2365 put_nfs_open_context(ctx
);
2369 static void nfs_finish_clear_delegation_stateid(struct nfs4_state
*state
,
2370 const nfs4_stateid
*stateid
)
2372 nfs_remove_bad_delegation(state
->inode
, stateid
);
2373 write_seqlock(&state
->seqlock
);
2374 nfs4_stateid_copy(&state
->stateid
, &state
->open_stateid
);
2375 write_sequnlock(&state
->seqlock
);
2376 clear_bit(NFS_DELEGATED_STATE
, &state
->flags
);
2379 static void nfs40_clear_delegation_stateid(struct nfs4_state
*state
)
2381 if (rcu_access_pointer(NFS_I(state
->inode
)->delegation
) != NULL
)
2382 nfs_finish_clear_delegation_stateid(state
, NULL
);
2385 static int nfs40_open_expired(struct nfs4_state_owner
*sp
, struct nfs4_state
*state
)
2387 /* NFSv4.0 doesn't allow for delegation recovery on open expire */
2388 nfs40_clear_delegation_stateid(state
);
2389 return nfs4_open_expired(sp
, state
);
2392 static int nfs40_test_and_free_expired_stateid(struct nfs_server
*server
,
2393 nfs4_stateid
*stateid
,
2394 struct rpc_cred
*cred
)
2396 return -NFS4ERR_BAD_STATEID
;
2399 #if defined(CONFIG_NFS_V4_1)
2400 static int nfs41_test_and_free_expired_stateid(struct nfs_server
*server
,
2401 nfs4_stateid
*stateid
,
2402 struct rpc_cred
*cred
)
2406 switch (stateid
->type
) {
2409 case NFS4_INVALID_STATEID_TYPE
:
2410 case NFS4_SPECIAL_STATEID_TYPE
:
2411 return -NFS4ERR_BAD_STATEID
;
2412 case NFS4_REVOKED_STATEID_TYPE
:
2416 status
= nfs41_test_stateid(server
, stateid
, cred
);
2418 case -NFS4ERR_EXPIRED
:
2419 case -NFS4ERR_ADMIN_REVOKED
:
2420 case -NFS4ERR_DELEG_REVOKED
:
2426 /* Ack the revoked state to the server */
2427 nfs41_free_stateid(server
, stateid
, cred
, true);
2428 return -NFS4ERR_EXPIRED
;
2431 static void nfs41_check_delegation_stateid(struct nfs4_state
*state
)
2433 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
2434 nfs4_stateid stateid
;
2435 struct nfs_delegation
*delegation
;
2436 struct rpc_cred
*cred
;
2439 /* Get the delegation credential for use by test/free_stateid */
2441 delegation
= rcu_dereference(NFS_I(state
->inode
)->delegation
);
2442 if (delegation
== NULL
) {
2447 nfs4_stateid_copy(&stateid
, &delegation
->stateid
);
2448 if (test_bit(NFS_DELEGATION_REVOKED
, &delegation
->flags
) ||
2449 !test_and_clear_bit(NFS_DELEGATION_TEST_EXPIRED
,
2450 &delegation
->flags
)) {
2452 nfs_finish_clear_delegation_stateid(state
, &stateid
);
2456 cred
= get_rpccred(delegation
->cred
);
2458 status
= nfs41_test_and_free_expired_stateid(server
, &stateid
, cred
);
2459 trace_nfs4_test_delegation_stateid(state
, NULL
, status
);
2460 if (status
== -NFS4ERR_EXPIRED
|| status
== -NFS4ERR_BAD_STATEID
)
2461 nfs_finish_clear_delegation_stateid(state
, &stateid
);
2467 * nfs41_check_expired_locks - possibly free a lock stateid
2469 * @state: NFSv4 state for an inode
2471 * Returns NFS_OK if recovery for this stateid is now finished.
2472 * Otherwise a negative NFS4ERR value is returned.
2474 static int nfs41_check_expired_locks(struct nfs4_state
*state
)
2476 int status
, ret
= NFS_OK
;
2477 struct nfs4_lock_state
*lsp
, *prev
= NULL
;
2478 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
2480 if (!test_bit(LK_STATE_IN_USE
, &state
->flags
))
2483 spin_lock(&state
->state_lock
);
2484 list_for_each_entry(lsp
, &state
->lock_states
, ls_locks
) {
2485 if (test_bit(NFS_LOCK_INITIALIZED
, &lsp
->ls_flags
)) {
2486 struct rpc_cred
*cred
= lsp
->ls_state
->owner
->so_cred
;
2488 atomic_inc(&lsp
->ls_count
);
2489 spin_unlock(&state
->state_lock
);
2491 nfs4_put_lock_state(prev
);
2494 status
= nfs41_test_and_free_expired_stateid(server
,
2497 trace_nfs4_test_lock_stateid(state
, lsp
, status
);
2498 if (status
== -NFS4ERR_EXPIRED
||
2499 status
== -NFS4ERR_BAD_STATEID
) {
2500 clear_bit(NFS_LOCK_INITIALIZED
, &lsp
->ls_flags
);
2501 lsp
->ls_stateid
.type
= NFS4_INVALID_STATEID_TYPE
;
2502 if (!recover_lost_locks
)
2503 set_bit(NFS_LOCK_LOST
, &lsp
->ls_flags
);
2504 } else if (status
!= NFS_OK
) {
2506 nfs4_put_lock_state(prev
);
2509 spin_lock(&state
->state_lock
);
2512 spin_unlock(&state
->state_lock
);
2513 nfs4_put_lock_state(prev
);
2519 * nfs41_check_open_stateid - possibly free an open stateid
2521 * @state: NFSv4 state for an inode
2523 * Returns NFS_OK if recovery for this stateid is now finished.
2524 * Otherwise a negative NFS4ERR value is returned.
2526 static int nfs41_check_open_stateid(struct nfs4_state
*state
)
2528 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
2529 nfs4_stateid
*stateid
= &state
->open_stateid
;
2530 struct rpc_cred
*cred
= state
->owner
->so_cred
;
2533 if (test_bit(NFS_OPEN_STATE
, &state
->flags
) == 0) {
2534 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) == 0) {
2535 if (nfs4_have_delegation(state
->inode
, state
->state
))
2537 return -NFS4ERR_OPENMODE
;
2539 return -NFS4ERR_BAD_STATEID
;
2541 status
= nfs41_test_and_free_expired_stateid(server
, stateid
, cred
);
2542 trace_nfs4_test_open_stateid(state
, NULL
, status
);
2543 if (status
== -NFS4ERR_EXPIRED
|| status
== -NFS4ERR_BAD_STATEID
) {
2544 clear_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
2545 clear_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
2546 clear_bit(NFS_O_RDWR_STATE
, &state
->flags
);
2547 clear_bit(NFS_OPEN_STATE
, &state
->flags
);
2548 stateid
->type
= NFS4_INVALID_STATEID_TYPE
;
2550 if (status
!= NFS_OK
)
2552 if (nfs_open_stateid_recover_openmode(state
))
2553 return -NFS4ERR_OPENMODE
;
2557 static int nfs41_open_expired(struct nfs4_state_owner
*sp
, struct nfs4_state
*state
)
2561 nfs41_check_delegation_stateid(state
);
2562 status
= nfs41_check_expired_locks(state
);
2563 if (status
!= NFS_OK
)
2565 status
= nfs41_check_open_stateid(state
);
2566 if (status
!= NFS_OK
)
2567 status
= nfs4_open_expired(sp
, state
);
2573 * on an EXCLUSIVE create, the server should send back a bitmask with FATTR4-*
2574 * fields corresponding to attributes that were used to store the verifier.
2575 * Make sure we clobber those fields in the later setattr call
2577 static inline void nfs4_exclusive_attrset(struct nfs4_opendata
*opendata
,
2578 struct iattr
*sattr
, struct nfs4_label
**label
)
2580 const u32
*attrset
= opendata
->o_res
.attrset
;
2582 if ((attrset
[1] & FATTR4_WORD1_TIME_ACCESS
) &&
2583 !(sattr
->ia_valid
& ATTR_ATIME_SET
))
2584 sattr
->ia_valid
|= ATTR_ATIME
;
2586 if ((attrset
[1] & FATTR4_WORD1_TIME_MODIFY
) &&
2587 !(sattr
->ia_valid
& ATTR_MTIME_SET
))
2588 sattr
->ia_valid
|= ATTR_MTIME
;
2590 /* Except MODE, it seems harmless of setting twice. */
2591 if (opendata
->o_arg
.createmode
!= NFS4_CREATE_EXCLUSIVE
&&
2592 (attrset
[1] & FATTR4_WORD1_MODE
||
2593 attrset
[2] & FATTR4_WORD2_MODE_UMASK
))
2594 sattr
->ia_valid
&= ~ATTR_MODE
;
2596 if (attrset
[2] & FATTR4_WORD2_SECURITY_LABEL
)
2600 static int _nfs4_open_and_get_state(struct nfs4_opendata
*opendata
,
2603 struct nfs_open_context
*ctx
)
2605 struct nfs4_state_owner
*sp
= opendata
->owner
;
2606 struct nfs_server
*server
= sp
->so_server
;
2607 struct dentry
*dentry
;
2608 struct nfs4_state
*state
;
2612 seq
= raw_seqcount_begin(&sp
->so_reclaim_seqcount
);
2614 ret
= _nfs4_proc_open(opendata
);
2618 state
= nfs4_opendata_to_nfs4_state(opendata
);
2619 ret
= PTR_ERR(state
);
2623 if (server
->caps
& NFS_CAP_POSIX_LOCK
)
2624 set_bit(NFS_STATE_POSIX_LOCKS
, &state
->flags
);
2625 if (opendata
->o_res
.rflags
& NFS4_OPEN_RESULT_MAY_NOTIFY_LOCK
)
2626 set_bit(NFS_STATE_MAY_NOTIFY_LOCK
, &state
->flags
);
2628 dentry
= opendata
->dentry
;
2629 if (d_really_is_negative(dentry
)) {
2630 struct dentry
*alias
;
2632 alias
= d_exact_alias(dentry
, state
->inode
);
2634 alias
= d_splice_alias(igrab(state
->inode
), dentry
);
2635 /* d_splice_alias() can't fail here - it's a non-directory */
2638 ctx
->dentry
= dentry
= alias
;
2640 nfs_set_verifier(dentry
,
2641 nfs_save_change_attribute(d_inode(opendata
->dir
)));
2644 ret
= nfs4_opendata_access(sp
->so_cred
, opendata
, state
, fmode
, flags
);
2648 if (d_inode(dentry
) == state
->inode
) {
2649 nfs_inode_attach_open_context(ctx
);
2650 if (read_seqcount_retry(&sp
->so_reclaim_seqcount
, seq
))
2651 nfs4_schedule_stateid_recovery(server
, state
);
2658 * Returns a referenced nfs4_state
2660 static int _nfs4_do_open(struct inode
*dir
,
2661 struct nfs_open_context
*ctx
,
2663 struct iattr
*sattr
,
2664 struct nfs4_label
*label
,
2667 struct nfs4_state_owner
*sp
;
2668 struct nfs4_state
*state
= NULL
;
2669 struct nfs_server
*server
= NFS_SERVER(dir
);
2670 struct nfs4_opendata
*opendata
;
2671 struct dentry
*dentry
= ctx
->dentry
;
2672 struct rpc_cred
*cred
= ctx
->cred
;
2673 struct nfs4_threshold
**ctx_th
= &ctx
->mdsthreshold
;
2674 fmode_t fmode
= ctx
->mode
& (FMODE_READ
|FMODE_WRITE
|FMODE_EXEC
);
2675 enum open_claim_type4 claim
= NFS4_OPEN_CLAIM_NULL
;
2676 struct nfs4_label
*olabel
= NULL
;
2679 /* Protect against reboot recovery conflicts */
2681 sp
= nfs4_get_state_owner(server
, cred
, GFP_KERNEL
);
2683 dprintk("nfs4_do_open: nfs4_get_state_owner failed!\n");
2686 status
= nfs4_client_recover_expired_lease(server
->nfs_client
);
2688 goto err_put_state_owner
;
2689 if (d_really_is_positive(dentry
))
2690 nfs4_return_incompatible_delegation(d_inode(dentry
), fmode
);
2692 if (d_really_is_positive(dentry
))
2693 claim
= NFS4_OPEN_CLAIM_FH
;
2694 opendata
= nfs4_opendata_alloc(dentry
, sp
, fmode
, flags
, sattr
,
2695 label
, claim
, GFP_KERNEL
);
2696 if (opendata
== NULL
)
2697 goto err_put_state_owner
;
2700 olabel
= nfs4_label_alloc(server
, GFP_KERNEL
);
2701 if (IS_ERR(olabel
)) {
2702 status
= PTR_ERR(olabel
);
2703 goto err_opendata_put
;
2707 if (server
->attr_bitmask
[2] & FATTR4_WORD2_MDSTHRESHOLD
) {
2708 if (!opendata
->f_attr
.mdsthreshold
) {
2709 opendata
->f_attr
.mdsthreshold
= pnfs_mdsthreshold_alloc();
2710 if (!opendata
->f_attr
.mdsthreshold
)
2711 goto err_free_label
;
2713 opendata
->o_arg
.open_bitmap
= &nfs4_pnfs_open_bitmap
[0];
2715 if (d_really_is_positive(dentry
))
2716 opendata
->state
= nfs4_get_open_state(d_inode(dentry
), sp
);
2718 status
= _nfs4_open_and_get_state(opendata
, fmode
, flags
, ctx
);
2720 goto err_free_label
;
2723 if ((opendata
->o_arg
.open_flags
& (O_CREAT
|O_EXCL
)) == (O_CREAT
|O_EXCL
) &&
2724 (opendata
->o_arg
.createmode
!= NFS4_CREATE_GUARDED
)) {
2725 nfs4_exclusive_attrset(opendata
, sattr
, &label
);
2727 * send create attributes which was not set by open
2728 * with an extra setattr.
2730 if (sattr
->ia_valid
& NFS4_VALID_ATTRS
) {
2731 nfs_fattr_init(opendata
->o_res
.f_attr
);
2732 status
= nfs4_do_setattr(state
->inode
, cred
,
2733 opendata
->o_res
.f_attr
, sattr
,
2734 ctx
, label
, olabel
);
2736 nfs_setattr_update_inode(state
->inode
, sattr
,
2737 opendata
->o_res
.f_attr
);
2738 nfs_setsecurity(state
->inode
, opendata
->o_res
.f_attr
, olabel
);
2742 if (opened
&& opendata
->file_created
)
2743 *opened
|= FILE_CREATED
;
2745 if (pnfs_use_threshold(ctx_th
, opendata
->f_attr
.mdsthreshold
, server
)) {
2746 *ctx_th
= opendata
->f_attr
.mdsthreshold
;
2747 opendata
->f_attr
.mdsthreshold
= NULL
;
2750 nfs4_label_free(olabel
);
2752 nfs4_opendata_put(opendata
);
2753 nfs4_put_state_owner(sp
);
2756 nfs4_label_free(olabel
);
2758 nfs4_opendata_put(opendata
);
2759 err_put_state_owner
:
2760 nfs4_put_state_owner(sp
);
2766 static struct nfs4_state
*nfs4_do_open(struct inode
*dir
,
2767 struct nfs_open_context
*ctx
,
2769 struct iattr
*sattr
,
2770 struct nfs4_label
*label
,
2773 struct nfs_server
*server
= NFS_SERVER(dir
);
2774 struct nfs4_exception exception
= { };
2775 struct nfs4_state
*res
;
2779 status
= _nfs4_do_open(dir
, ctx
, flags
, sattr
, label
, opened
);
2781 trace_nfs4_open_file(ctx
, flags
, status
);
2784 /* NOTE: BAD_SEQID means the server and client disagree about the
2785 * book-keeping w.r.t. state-changing operations
2786 * (OPEN/CLOSE/LOCK/LOCKU...)
2787 * It is actually a sign of a bug on the client or on the server.
2789 * If we receive a BAD_SEQID error in the particular case of
2790 * doing an OPEN, we assume that nfs_increment_open_seqid() will
2791 * have unhashed the old state_owner for us, and that we can
2792 * therefore safely retry using a new one. We should still warn
2793 * the user though...
2795 if (status
== -NFS4ERR_BAD_SEQID
) {
2796 pr_warn_ratelimited("NFS: v4 server %s "
2797 " returned a bad sequence-id error!\n",
2798 NFS_SERVER(dir
)->nfs_client
->cl_hostname
);
2799 exception
.retry
= 1;
2803 * BAD_STATEID on OPEN means that the server cancelled our
2804 * state before it received the OPEN_CONFIRM.
2805 * Recover by retrying the request as per the discussion
2806 * on Page 181 of RFC3530.
2808 if (status
== -NFS4ERR_BAD_STATEID
) {
2809 exception
.retry
= 1;
2812 if (status
== -EAGAIN
) {
2813 /* We must have found a delegation */
2814 exception
.retry
= 1;
2817 if (nfs4_clear_cap_atomic_open_v1(server
, status
, &exception
))
2819 res
= ERR_PTR(nfs4_handle_exception(server
,
2820 status
, &exception
));
2821 } while (exception
.retry
);
2825 static int _nfs4_do_setattr(struct inode
*inode
,
2826 struct nfs_setattrargs
*arg
,
2827 struct nfs_setattrres
*res
,
2828 struct rpc_cred
*cred
,
2829 struct nfs_open_context
*ctx
)
2831 struct nfs_server
*server
= NFS_SERVER(inode
);
2832 struct rpc_message msg
= {
2833 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETATTR
],
2838 struct rpc_cred
*delegation_cred
= NULL
;
2839 unsigned long timestamp
= jiffies
;
2844 nfs_fattr_init(res
->fattr
);
2846 /* Servers should only apply open mode checks for file size changes */
2847 truncate
= (arg
->iap
->ia_valid
& ATTR_SIZE
) ? true : false;
2848 fmode
= truncate
? FMODE_WRITE
: FMODE_READ
;
2850 if (nfs4_copy_delegation_stateid(inode
, fmode
, &arg
->stateid
, &delegation_cred
)) {
2851 /* Use that stateid */
2852 } else if (truncate
&& ctx
!= NULL
) {
2853 struct nfs_lock_context
*l_ctx
;
2854 if (!nfs4_valid_open_stateid(ctx
->state
))
2856 l_ctx
= nfs_get_lock_context(ctx
);
2858 return PTR_ERR(l_ctx
);
2859 status
= nfs4_select_rw_stateid(ctx
->state
, FMODE_WRITE
, l_ctx
,
2860 &arg
->stateid
, &delegation_cred
);
2861 nfs_put_lock_context(l_ctx
);
2865 nfs4_stateid_copy(&arg
->stateid
, &zero_stateid
);
2866 if (delegation_cred
)
2867 msg
.rpc_cred
= delegation_cred
;
2869 status
= nfs4_call_sync(server
->client
, server
, &msg
, &arg
->seq_args
, &res
->seq_res
, 1);
2871 put_rpccred(delegation_cred
);
2872 if (status
== 0 && ctx
!= NULL
)
2873 renew_lease(server
, timestamp
);
2874 trace_nfs4_setattr(inode
, &arg
->stateid
, status
);
2878 static int nfs4_do_setattr(struct inode
*inode
, struct rpc_cred
*cred
,
2879 struct nfs_fattr
*fattr
, struct iattr
*sattr
,
2880 struct nfs_open_context
*ctx
, struct nfs4_label
*ilabel
,
2881 struct nfs4_label
*olabel
)
2883 struct nfs_server
*server
= NFS_SERVER(inode
);
2884 struct nfs4_state
*state
= ctx
? ctx
->state
: NULL
;
2885 struct nfs_setattrargs arg
= {
2886 .fh
= NFS_FH(inode
),
2889 .bitmask
= server
->attr_bitmask
,
2892 struct nfs_setattrres res
= {
2897 struct nfs4_exception exception
= {
2900 .stateid
= &arg
.stateid
,
2904 arg
.bitmask
= nfs4_bitmask(server
, ilabel
);
2906 arg
.bitmask
= nfs4_bitmask(server
, olabel
);
2909 err
= _nfs4_do_setattr(inode
, &arg
, &res
, cred
, ctx
);
2911 case -NFS4ERR_OPENMODE
:
2912 if (!(sattr
->ia_valid
& ATTR_SIZE
)) {
2913 pr_warn_once("NFSv4: server %s is incorrectly "
2914 "applying open mode checks to "
2915 "a SETATTR that is not "
2916 "changing file size.\n",
2917 server
->nfs_client
->cl_hostname
);
2919 if (state
&& !(state
->state
& FMODE_WRITE
)) {
2921 if (sattr
->ia_valid
& ATTR_OPEN
)
2926 err
= nfs4_handle_exception(server
, err
, &exception
);
2927 } while (exception
.retry
);
2933 nfs4_wait_on_layoutreturn(struct inode
*inode
, struct rpc_task
*task
)
2935 if (inode
== NULL
|| !nfs_have_layout(inode
))
2938 return pnfs_wait_on_layoutreturn(inode
, task
);
2941 struct nfs4_closedata
{
2942 struct inode
*inode
;
2943 struct nfs4_state
*state
;
2944 struct nfs_closeargs arg
;
2945 struct nfs_closeres res
;
2947 struct nfs4_layoutreturn_args arg
;
2948 struct nfs4_layoutreturn_res res
;
2949 struct nfs4_xdr_opaque_data ld_private
;
2953 struct nfs_fattr fattr
;
2954 unsigned long timestamp
;
2957 static void nfs4_free_closedata(void *data
)
2959 struct nfs4_closedata
*calldata
= data
;
2960 struct nfs4_state_owner
*sp
= calldata
->state
->owner
;
2961 struct super_block
*sb
= calldata
->state
->inode
->i_sb
;
2963 if (calldata
->lr
.roc
)
2964 pnfs_roc_release(&calldata
->lr
.arg
, &calldata
->lr
.res
,
2965 calldata
->res
.lr_ret
);
2966 nfs4_put_open_state(calldata
->state
);
2967 nfs_free_seqid(calldata
->arg
.seqid
);
2968 nfs4_put_state_owner(sp
);
2969 nfs_sb_deactive(sb
);
2973 static void nfs4_close_done(struct rpc_task
*task
, void *data
)
2975 struct nfs4_closedata
*calldata
= data
;
2976 struct nfs4_state
*state
= calldata
->state
;
2977 struct nfs_server
*server
= NFS_SERVER(calldata
->inode
);
2978 nfs4_stateid
*res_stateid
= NULL
;
2980 dprintk("%s: begin!\n", __func__
);
2981 if (!nfs4_sequence_done(task
, &calldata
->res
.seq_res
))
2983 trace_nfs4_close(state
, &calldata
->arg
, &calldata
->res
, task
->tk_status
);
2985 /* Handle Layoutreturn errors */
2986 if (calldata
->arg
.lr_args
&& task
->tk_status
!= 0) {
2987 switch (calldata
->res
.lr_ret
) {
2989 calldata
->res
.lr_ret
= -NFS4ERR_NOMATCHING_LAYOUT
;
2992 calldata
->arg
.lr_args
= NULL
;
2993 calldata
->res
.lr_res
= NULL
;
2995 case -NFS4ERR_ADMIN_REVOKED
:
2996 case -NFS4ERR_DELEG_REVOKED
:
2997 case -NFS4ERR_EXPIRED
:
2998 case -NFS4ERR_BAD_STATEID
:
2999 case -NFS4ERR_OLD_STATEID
:
3000 case -NFS4ERR_UNKNOWN_LAYOUTTYPE
:
3001 case -NFS4ERR_WRONG_CRED
:
3002 calldata
->arg
.lr_args
= NULL
;
3003 calldata
->res
.lr_res
= NULL
;
3004 calldata
->res
.lr_ret
= 0;
3005 rpc_restart_call_prepare(task
);
3010 /* hmm. we are done with the inode, and in the process of freeing
3011 * the state_owner. we keep this around to process errors
3013 switch (task
->tk_status
) {
3015 res_stateid
= &calldata
->res
.stateid
;
3016 renew_lease(server
, calldata
->timestamp
);
3018 case -NFS4ERR_ACCESS
:
3019 if (calldata
->arg
.bitmask
!= NULL
) {
3020 calldata
->arg
.bitmask
= NULL
;
3021 calldata
->res
.fattr
= NULL
;
3022 task
->tk_status
= 0;
3023 rpc_restart_call_prepare(task
);
3028 case -NFS4ERR_ADMIN_REVOKED
:
3029 case -NFS4ERR_STALE_STATEID
:
3030 case -NFS4ERR_EXPIRED
:
3031 nfs4_free_revoked_stateid(server
,
3032 &calldata
->arg
.stateid
,
3033 task
->tk_msg
.rpc_cred
);
3034 case -NFS4ERR_OLD_STATEID
:
3035 case -NFS4ERR_BAD_STATEID
:
3036 if (!nfs4_stateid_match(&calldata
->arg
.stateid
,
3037 &state
->open_stateid
)) {
3038 rpc_restart_call_prepare(task
);
3041 if (calldata
->arg
.fmode
== 0)
3044 if (nfs4_async_handle_error(task
, server
, state
, NULL
) == -EAGAIN
) {
3045 rpc_restart_call_prepare(task
);
3049 nfs_clear_open_stateid(state
, &calldata
->arg
.stateid
,
3050 res_stateid
, calldata
->arg
.fmode
);
3052 nfs_release_seqid(calldata
->arg
.seqid
);
3053 nfs_refresh_inode(calldata
->inode
, &calldata
->fattr
);
3054 dprintk("%s: done, ret = %d!\n", __func__
, task
->tk_status
);
3057 static void nfs4_close_prepare(struct rpc_task
*task
, void *data
)
3059 struct nfs4_closedata
*calldata
= data
;
3060 struct nfs4_state
*state
= calldata
->state
;
3061 struct inode
*inode
= calldata
->inode
;
3062 bool is_rdonly
, is_wronly
, is_rdwr
;
3065 dprintk("%s: begin!\n", __func__
);
3066 if (nfs_wait_on_sequence(calldata
->arg
.seqid
, task
) != 0)
3069 task
->tk_msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_OPEN_DOWNGRADE
];
3070 spin_lock(&state
->owner
->so_lock
);
3071 is_rdwr
= test_bit(NFS_O_RDWR_STATE
, &state
->flags
);
3072 is_rdonly
= test_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
3073 is_wronly
= test_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
3074 nfs4_stateid_copy(&calldata
->arg
.stateid
, &state
->open_stateid
);
3075 /* Calculate the change in open mode */
3076 calldata
->arg
.fmode
= 0;
3077 if (state
->n_rdwr
== 0) {
3078 if (state
->n_rdonly
== 0)
3079 call_close
|= is_rdonly
;
3081 calldata
->arg
.fmode
|= FMODE_READ
;
3082 if (state
->n_wronly
== 0)
3083 call_close
|= is_wronly
;
3085 calldata
->arg
.fmode
|= FMODE_WRITE
;
3086 if (calldata
->arg
.fmode
!= (FMODE_READ
|FMODE_WRITE
))
3087 call_close
|= is_rdwr
;
3089 calldata
->arg
.fmode
|= FMODE_READ
|FMODE_WRITE
;
3091 if (!nfs4_valid_open_stateid(state
) ||
3092 test_bit(NFS_OPEN_STATE
, &state
->flags
) == 0)
3094 spin_unlock(&state
->owner
->so_lock
);
3097 /* Note: exit _without_ calling nfs4_close_done */
3101 if (!calldata
->lr
.roc
&& nfs4_wait_on_layoutreturn(inode
, task
)) {
3102 nfs_release_seqid(calldata
->arg
.seqid
);
3106 if (calldata
->arg
.fmode
== 0)
3107 task
->tk_msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_CLOSE
];
3109 if (calldata
->arg
.fmode
== 0 || calldata
->arg
.fmode
== FMODE_READ
) {
3110 /* Close-to-open cache consistency revalidation */
3111 if (!nfs4_have_delegation(inode
, FMODE_READ
))
3112 calldata
->arg
.bitmask
= NFS_SERVER(inode
)->cache_consistency_bitmask
;
3114 calldata
->arg
.bitmask
= NULL
;
3117 calldata
->arg
.share_access
=
3118 nfs4_map_atomic_open_share(NFS_SERVER(inode
),
3119 calldata
->arg
.fmode
, 0);
3121 if (calldata
->res
.fattr
== NULL
)
3122 calldata
->arg
.bitmask
= NULL
;
3123 else if (calldata
->arg
.bitmask
== NULL
)
3124 calldata
->res
.fattr
= NULL
;
3125 calldata
->timestamp
= jiffies
;
3126 if (nfs4_setup_sequence(NFS_SERVER(inode
)->nfs_client
,
3127 &calldata
->arg
.seq_args
,
3128 &calldata
->res
.seq_res
,
3130 nfs_release_seqid(calldata
->arg
.seqid
);
3131 dprintk("%s: done!\n", __func__
);
3134 task
->tk_action
= NULL
;
3136 nfs4_sequence_done(task
, &calldata
->res
.seq_res
);
3139 static const struct rpc_call_ops nfs4_close_ops
= {
3140 .rpc_call_prepare
= nfs4_close_prepare
,
3141 .rpc_call_done
= nfs4_close_done
,
3142 .rpc_release
= nfs4_free_closedata
,
3146 * It is possible for data to be read/written from a mem-mapped file
3147 * after the sys_close call (which hits the vfs layer as a flush).
3148 * This means that we can't safely call nfsv4 close on a file until
3149 * the inode is cleared. This in turn means that we are not good
3150 * NFSv4 citizens - we do not indicate to the server to update the file's
3151 * share state even when we are done with one of the three share
3152 * stateid's in the inode.
3154 * NOTE: Caller must be holding the sp->so_owner semaphore!
3156 int nfs4_do_close(struct nfs4_state
*state
, gfp_t gfp_mask
, int wait
)
3158 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
3159 struct nfs_seqid
*(*alloc_seqid
)(struct nfs_seqid_counter
*, gfp_t
);
3160 struct nfs4_closedata
*calldata
;
3161 struct nfs4_state_owner
*sp
= state
->owner
;
3162 struct rpc_task
*task
;
3163 struct rpc_message msg
= {
3164 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_CLOSE
],
3165 .rpc_cred
= state
->owner
->so_cred
,
3167 struct rpc_task_setup task_setup_data
= {
3168 .rpc_client
= server
->client
,
3169 .rpc_message
= &msg
,
3170 .callback_ops
= &nfs4_close_ops
,
3171 .workqueue
= nfsiod_workqueue
,
3172 .flags
= RPC_TASK_ASYNC
,
3174 int status
= -ENOMEM
;
3176 nfs4_state_protect(server
->nfs_client
, NFS_SP4_MACH_CRED_CLEANUP
,
3177 &task_setup_data
.rpc_client
, &msg
);
3179 calldata
= kzalloc(sizeof(*calldata
), gfp_mask
);
3180 if (calldata
== NULL
)
3182 nfs4_init_sequence(&calldata
->arg
.seq_args
, &calldata
->res
.seq_res
, 1);
3183 calldata
->inode
= state
->inode
;
3184 calldata
->state
= state
;
3185 calldata
->arg
.fh
= NFS_FH(state
->inode
);
3186 /* Serialization for the sequence id */
3187 alloc_seqid
= server
->nfs_client
->cl_mvops
->alloc_seqid
;
3188 calldata
->arg
.seqid
= alloc_seqid(&state
->owner
->so_seqid
, gfp_mask
);
3189 if (IS_ERR(calldata
->arg
.seqid
))
3190 goto out_free_calldata
;
3191 nfs_fattr_init(&calldata
->fattr
);
3192 calldata
->arg
.fmode
= 0;
3193 calldata
->lr
.arg
.ld_private
= &calldata
->lr
.ld_private
;
3194 calldata
->res
.fattr
= &calldata
->fattr
;
3195 calldata
->res
.seqid
= calldata
->arg
.seqid
;
3196 calldata
->res
.server
= server
;
3197 calldata
->res
.lr_ret
= -NFS4ERR_NOMATCHING_LAYOUT
;
3198 calldata
->lr
.roc
= pnfs_roc(state
->inode
,
3199 &calldata
->lr
.arg
, &calldata
->lr
.res
, msg
.rpc_cred
);
3200 if (calldata
->lr
.roc
) {
3201 calldata
->arg
.lr_args
= &calldata
->lr
.arg
;
3202 calldata
->res
.lr_res
= &calldata
->lr
.res
;
3204 nfs_sb_active(calldata
->inode
->i_sb
);
3206 msg
.rpc_argp
= &calldata
->arg
;
3207 msg
.rpc_resp
= &calldata
->res
;
3208 task_setup_data
.callback_data
= calldata
;
3209 task
= rpc_run_task(&task_setup_data
);
3211 return PTR_ERR(task
);
3214 status
= rpc_wait_for_completion_task(task
);
3220 nfs4_put_open_state(state
);
3221 nfs4_put_state_owner(sp
);
3225 static struct inode
*
3226 nfs4_atomic_open(struct inode
*dir
, struct nfs_open_context
*ctx
,
3227 int open_flags
, struct iattr
*attr
, int *opened
)
3229 struct nfs4_state
*state
;
3230 struct nfs4_label l
= {0, 0, 0, NULL
}, *label
= NULL
;
3232 label
= nfs4_label_init_security(dir
, ctx
->dentry
, attr
, &l
);
3234 /* Protect against concurrent sillydeletes */
3235 state
= nfs4_do_open(dir
, ctx
, open_flags
, attr
, label
, opened
);
3237 nfs4_label_release_security(label
);
3240 return ERR_CAST(state
);
3241 return state
->inode
;
3244 static void nfs4_close_context(struct nfs_open_context
*ctx
, int is_sync
)
3246 if (ctx
->state
== NULL
)
3249 nfs4_close_sync(ctx
->state
, ctx
->mode
);
3251 nfs4_close_state(ctx
->state
, ctx
->mode
);
3254 #define FATTR4_WORD1_NFS40_MASK (2*FATTR4_WORD1_MOUNTED_ON_FILEID - 1UL)
3255 #define FATTR4_WORD2_NFS41_MASK (2*FATTR4_WORD2_SUPPATTR_EXCLCREAT - 1UL)
3256 #define FATTR4_WORD2_NFS42_MASK (2*FATTR4_WORD2_MODE_UMASK - 1UL)
3258 static int _nfs4_server_capabilities(struct nfs_server
*server
, struct nfs_fh
*fhandle
)
3260 u32 bitmask
[3] = {}, minorversion
= server
->nfs_client
->cl_minorversion
;
3261 struct nfs4_server_caps_arg args
= {
3265 struct nfs4_server_caps_res res
= {};
3266 struct rpc_message msg
= {
3267 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SERVER_CAPS
],
3274 bitmask
[0] = FATTR4_WORD0_SUPPORTED_ATTRS
|
3275 FATTR4_WORD0_FH_EXPIRE_TYPE
|
3276 FATTR4_WORD0_LINK_SUPPORT
|
3277 FATTR4_WORD0_SYMLINK_SUPPORT
|
3278 FATTR4_WORD0_ACLSUPPORT
;
3280 bitmask
[2] = FATTR4_WORD2_SUPPATTR_EXCLCREAT
;
3282 status
= nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
3284 /* Sanity check the server answers */
3285 switch (minorversion
) {
3287 res
.attr_bitmask
[1] &= FATTR4_WORD1_NFS40_MASK
;
3288 res
.attr_bitmask
[2] = 0;
3291 res
.attr_bitmask
[2] &= FATTR4_WORD2_NFS41_MASK
;
3294 res
.attr_bitmask
[2] &= FATTR4_WORD2_NFS42_MASK
;
3296 memcpy(server
->attr_bitmask
, res
.attr_bitmask
, sizeof(server
->attr_bitmask
));
3297 server
->caps
&= ~(NFS_CAP_ACLS
|NFS_CAP_HARDLINKS
|
3298 NFS_CAP_SYMLINKS
|NFS_CAP_FILEID
|
3299 NFS_CAP_MODE
|NFS_CAP_NLINK
|NFS_CAP_OWNER
|
3300 NFS_CAP_OWNER_GROUP
|NFS_CAP_ATIME
|
3301 NFS_CAP_CTIME
|NFS_CAP_MTIME
|
3302 NFS_CAP_SECURITY_LABEL
);
3303 if (res
.attr_bitmask
[0] & FATTR4_WORD0_ACL
&&
3304 res
.acl_bitmask
& ACL4_SUPPORT_ALLOW_ACL
)
3305 server
->caps
|= NFS_CAP_ACLS
;
3306 if (res
.has_links
!= 0)
3307 server
->caps
|= NFS_CAP_HARDLINKS
;
3308 if (res
.has_symlinks
!= 0)
3309 server
->caps
|= NFS_CAP_SYMLINKS
;
3310 if (res
.attr_bitmask
[0] & FATTR4_WORD0_FILEID
)
3311 server
->caps
|= NFS_CAP_FILEID
;
3312 if (res
.attr_bitmask
[1] & FATTR4_WORD1_MODE
)
3313 server
->caps
|= NFS_CAP_MODE
;
3314 if (res
.attr_bitmask
[1] & FATTR4_WORD1_NUMLINKS
)
3315 server
->caps
|= NFS_CAP_NLINK
;
3316 if (res
.attr_bitmask
[1] & FATTR4_WORD1_OWNER
)
3317 server
->caps
|= NFS_CAP_OWNER
;
3318 if (res
.attr_bitmask
[1] & FATTR4_WORD1_OWNER_GROUP
)
3319 server
->caps
|= NFS_CAP_OWNER_GROUP
;
3320 if (res
.attr_bitmask
[1] & FATTR4_WORD1_TIME_ACCESS
)
3321 server
->caps
|= NFS_CAP_ATIME
;
3322 if (res
.attr_bitmask
[1] & FATTR4_WORD1_TIME_METADATA
)
3323 server
->caps
|= NFS_CAP_CTIME
;
3324 if (res
.attr_bitmask
[1] & FATTR4_WORD1_TIME_MODIFY
)
3325 server
->caps
|= NFS_CAP_MTIME
;
3326 #ifdef CONFIG_NFS_V4_SECURITY_LABEL
3327 if (res
.attr_bitmask
[2] & FATTR4_WORD2_SECURITY_LABEL
)
3328 server
->caps
|= NFS_CAP_SECURITY_LABEL
;
3330 memcpy(server
->attr_bitmask_nl
, res
.attr_bitmask
,
3331 sizeof(server
->attr_bitmask
));
3332 server
->attr_bitmask_nl
[2] &= ~FATTR4_WORD2_SECURITY_LABEL
;
3334 memcpy(server
->cache_consistency_bitmask
, res
.attr_bitmask
, sizeof(server
->cache_consistency_bitmask
));
3335 server
->cache_consistency_bitmask
[0] &= FATTR4_WORD0_CHANGE
|FATTR4_WORD0_SIZE
;
3336 server
->cache_consistency_bitmask
[1] &= FATTR4_WORD1_TIME_METADATA
|FATTR4_WORD1_TIME_MODIFY
;
3337 server
->cache_consistency_bitmask
[2] = 0;
3339 /* Avoid a regression due to buggy server */
3340 for (i
= 0; i
< ARRAY_SIZE(res
.exclcreat_bitmask
); i
++)
3341 res
.exclcreat_bitmask
[i
] &= res
.attr_bitmask
[i
];
3342 memcpy(server
->exclcreat_bitmask
, res
.exclcreat_bitmask
,
3343 sizeof(server
->exclcreat_bitmask
));
3345 server
->acl_bitmask
= res
.acl_bitmask
;
3346 server
->fh_expire_type
= res
.fh_expire_type
;
3352 int nfs4_server_capabilities(struct nfs_server
*server
, struct nfs_fh
*fhandle
)
3354 struct nfs4_exception exception
= { };
3357 err
= nfs4_handle_exception(server
,
3358 _nfs4_server_capabilities(server
, fhandle
),
3360 } while (exception
.retry
);
3364 static int _nfs4_lookup_root(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
3365 struct nfs_fsinfo
*info
)
3368 struct nfs4_lookup_root_arg args
= {
3371 struct nfs4_lookup_res res
= {
3373 .fattr
= info
->fattr
,
3376 struct rpc_message msg
= {
3377 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOOKUP_ROOT
],
3382 bitmask
[0] = nfs4_fattr_bitmap
[0];
3383 bitmask
[1] = nfs4_fattr_bitmap
[1];
3385 * Process the label in the upcoming getfattr
3387 bitmask
[2] = nfs4_fattr_bitmap
[2] & ~FATTR4_WORD2_SECURITY_LABEL
;
3389 nfs_fattr_init(info
->fattr
);
3390 return nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
3393 static int nfs4_lookup_root(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
3394 struct nfs_fsinfo
*info
)
3396 struct nfs4_exception exception
= { };
3399 err
= _nfs4_lookup_root(server
, fhandle
, info
);
3400 trace_nfs4_lookup_root(server
, fhandle
, info
->fattr
, err
);
3403 case -NFS4ERR_WRONGSEC
:
3406 err
= nfs4_handle_exception(server
, err
, &exception
);
3408 } while (exception
.retry
);
3413 static int nfs4_lookup_root_sec(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
3414 struct nfs_fsinfo
*info
, rpc_authflavor_t flavor
)
3416 struct rpc_auth_create_args auth_args
= {
3417 .pseudoflavor
= flavor
,
3419 struct rpc_auth
*auth
;
3421 auth
= rpcauth_create(&auth_args
, server
->client
);
3424 return nfs4_lookup_root(server
, fhandle
, info
);
3428 * Retry pseudoroot lookup with various security flavors. We do this when:
3430 * NFSv4.0: the PUTROOTFH operation returns NFS4ERR_WRONGSEC
3431 * NFSv4.1: the server does not support the SECINFO_NO_NAME operation
3433 * Returns zero on success, or a negative NFS4ERR value, or a
3434 * negative errno value.
3436 static int nfs4_find_root_sec(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
3437 struct nfs_fsinfo
*info
)
3439 /* Per 3530bis 15.33.5 */
3440 static const rpc_authflavor_t flav_array
[] = {
3444 RPC_AUTH_UNIX
, /* courtesy */
3447 int status
= -EPERM
;
3450 if (server
->auth_info
.flavor_len
> 0) {
3451 /* try each flavor specified by user */
3452 for (i
= 0; i
< server
->auth_info
.flavor_len
; i
++) {
3453 status
= nfs4_lookup_root_sec(server
, fhandle
, info
,
3454 server
->auth_info
.flavors
[i
]);
3455 if (status
== -NFS4ERR_WRONGSEC
|| status
== -EACCES
)
3460 /* no flavors specified by user, try default list */
3461 for (i
= 0; i
< ARRAY_SIZE(flav_array
); i
++) {
3462 status
= nfs4_lookup_root_sec(server
, fhandle
, info
,
3464 if (status
== -NFS4ERR_WRONGSEC
|| status
== -EACCES
)
3471 * -EACCESS could mean that the user doesn't have correct permissions
3472 * to access the mount. It could also mean that we tried to mount
3473 * with a gss auth flavor, but rpc.gssd isn't running. Either way,
3474 * existing mount programs don't handle -EACCES very well so it should
3475 * be mapped to -EPERM instead.
3477 if (status
== -EACCES
)
3483 * nfs4_proc_get_rootfh - get file handle for server's pseudoroot
3484 * @server: initialized nfs_server handle
3485 * @fhandle: we fill in the pseudo-fs root file handle
3486 * @info: we fill in an FSINFO struct
3487 * @auth_probe: probe the auth flavours
3489 * Returns zero on success, or a negative errno.
3491 int nfs4_proc_get_rootfh(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
3492 struct nfs_fsinfo
*info
,
3498 status
= nfs4_lookup_root(server
, fhandle
, info
);
3500 if (auth_probe
|| status
== NFS4ERR_WRONGSEC
)
3501 status
= server
->nfs_client
->cl_mvops
->find_root_sec(server
,
3505 status
= nfs4_server_capabilities(server
, fhandle
);
3507 status
= nfs4_do_fsinfo(server
, fhandle
, info
);
3509 return nfs4_map_errors(status
);
3512 static int nfs4_proc_get_root(struct nfs_server
*server
, struct nfs_fh
*mntfh
,
3513 struct nfs_fsinfo
*info
)
3516 struct nfs_fattr
*fattr
= info
->fattr
;
3517 struct nfs4_label
*label
= NULL
;
3519 error
= nfs4_server_capabilities(server
, mntfh
);
3521 dprintk("nfs4_get_root: getcaps error = %d\n", -error
);
3525 label
= nfs4_label_alloc(server
, GFP_KERNEL
);
3527 return PTR_ERR(label
);
3529 error
= nfs4_proc_getattr(server
, mntfh
, fattr
, label
);
3531 dprintk("nfs4_get_root: getattr error = %d\n", -error
);
3532 goto err_free_label
;
3535 if (fattr
->valid
& NFS_ATTR_FATTR_FSID
&&
3536 !nfs_fsid_equal(&server
->fsid
, &fattr
->fsid
))
3537 memcpy(&server
->fsid
, &fattr
->fsid
, sizeof(server
->fsid
));
3540 nfs4_label_free(label
);
3546 * Get locations and (maybe) other attributes of a referral.
3547 * Note that we'll actually follow the referral later when
3548 * we detect fsid mismatch in inode revalidation
3550 static int nfs4_get_referral(struct rpc_clnt
*client
, struct inode
*dir
,
3551 const struct qstr
*name
, struct nfs_fattr
*fattr
,
3552 struct nfs_fh
*fhandle
)
3554 int status
= -ENOMEM
;
3555 struct page
*page
= NULL
;
3556 struct nfs4_fs_locations
*locations
= NULL
;
3558 page
= alloc_page(GFP_KERNEL
);
3561 locations
= kmalloc(sizeof(struct nfs4_fs_locations
), GFP_KERNEL
);
3562 if (locations
== NULL
)
3565 status
= nfs4_proc_fs_locations(client
, dir
, name
, locations
, page
);
3570 * If the fsid didn't change, this is a migration event, not a
3571 * referral. Cause us to drop into the exception handler, which
3572 * will kick off migration recovery.
3574 if (nfs_fsid_equal(&NFS_SERVER(dir
)->fsid
, &locations
->fattr
.fsid
)) {
3575 dprintk("%s: server did not return a different fsid for"
3576 " a referral at %s\n", __func__
, name
->name
);
3577 status
= -NFS4ERR_MOVED
;
3580 /* Fixup attributes for the nfs_lookup() call to nfs_fhget() */
3581 nfs_fixup_referral_attributes(&locations
->fattr
);
3583 /* replace the lookup nfs_fattr with the locations nfs_fattr */
3584 memcpy(fattr
, &locations
->fattr
, sizeof(struct nfs_fattr
));
3585 memset(fhandle
, 0, sizeof(struct nfs_fh
));
3593 static int _nfs4_proc_getattr(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
3594 struct nfs_fattr
*fattr
, struct nfs4_label
*label
)
3596 struct nfs4_getattr_arg args
= {
3598 .bitmask
= server
->attr_bitmask
,
3600 struct nfs4_getattr_res res
= {
3605 struct rpc_message msg
= {
3606 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GETATTR
],
3611 args
.bitmask
= nfs4_bitmask(server
, label
);
3613 nfs_fattr_init(fattr
);
3614 return nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
3617 static int nfs4_proc_getattr(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
3618 struct nfs_fattr
*fattr
, struct nfs4_label
*label
)
3620 struct nfs4_exception exception
= { };
3623 err
= _nfs4_proc_getattr(server
, fhandle
, fattr
, label
);
3624 trace_nfs4_getattr(server
, fhandle
, fattr
, err
);
3625 err
= nfs4_handle_exception(server
, err
,
3627 } while (exception
.retry
);
3632 * The file is not closed if it is opened due to the a request to change
3633 * the size of the file. The open call will not be needed once the
3634 * VFS layer lookup-intents are implemented.
3636 * Close is called when the inode is destroyed.
3637 * If we haven't opened the file for O_WRONLY, we
3638 * need to in the size_change case to obtain a stateid.
3641 * Because OPEN is always done by name in nfsv4, it is
3642 * possible that we opened a different file by the same
3643 * name. We can recognize this race condition, but we
3644 * can't do anything about it besides returning an error.
3646 * This will be fixed with VFS changes (lookup-intent).
3649 nfs4_proc_setattr(struct dentry
*dentry
, struct nfs_fattr
*fattr
,
3650 struct iattr
*sattr
)
3652 struct inode
*inode
= d_inode(dentry
);
3653 struct rpc_cred
*cred
= NULL
;
3654 struct nfs_open_context
*ctx
= NULL
;
3655 struct nfs4_label
*label
= NULL
;
3658 if (pnfs_ld_layoutret_on_setattr(inode
) &&
3659 sattr
->ia_valid
& ATTR_SIZE
&&
3660 sattr
->ia_size
< i_size_read(inode
))
3661 pnfs_commit_and_return_layout(inode
);
3663 nfs_fattr_init(fattr
);
3665 /* Deal with open(O_TRUNC) */
3666 if (sattr
->ia_valid
& ATTR_OPEN
)
3667 sattr
->ia_valid
&= ~(ATTR_MTIME
|ATTR_CTIME
);
3669 /* Optimization: if the end result is no change, don't RPC */
3670 if ((sattr
->ia_valid
& ~(ATTR_FILE
|ATTR_OPEN
)) == 0)
3673 /* Search for an existing open(O_WRITE) file */
3674 if (sattr
->ia_valid
& ATTR_FILE
) {
3676 ctx
= nfs_file_open_context(sattr
->ia_file
);
3681 label
= nfs4_label_alloc(NFS_SERVER(inode
), GFP_KERNEL
);
3683 return PTR_ERR(label
);
3685 status
= nfs4_do_setattr(inode
, cred
, fattr
, sattr
, ctx
, NULL
, label
);
3687 nfs_setattr_update_inode(inode
, sattr
, fattr
);
3688 nfs_setsecurity(inode
, fattr
, label
);
3690 nfs4_label_free(label
);
3694 static int _nfs4_proc_lookup(struct rpc_clnt
*clnt
, struct inode
*dir
,
3695 const struct qstr
*name
, struct nfs_fh
*fhandle
,
3696 struct nfs_fattr
*fattr
, struct nfs4_label
*label
)
3698 struct nfs_server
*server
= NFS_SERVER(dir
);
3700 struct nfs4_lookup_arg args
= {
3701 .bitmask
= server
->attr_bitmask
,
3702 .dir_fh
= NFS_FH(dir
),
3705 struct nfs4_lookup_res res
= {
3711 struct rpc_message msg
= {
3712 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOOKUP
],
3717 args
.bitmask
= nfs4_bitmask(server
, label
);
3719 nfs_fattr_init(fattr
);
3721 dprintk("NFS call lookup %s\n", name
->name
);
3722 status
= nfs4_call_sync(clnt
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
3723 dprintk("NFS reply lookup: %d\n", status
);
3727 static void nfs_fixup_secinfo_attributes(struct nfs_fattr
*fattr
)
3729 fattr
->valid
|= NFS_ATTR_FATTR_TYPE
| NFS_ATTR_FATTR_MODE
|
3730 NFS_ATTR_FATTR_NLINK
| NFS_ATTR_FATTR_MOUNTPOINT
;
3731 fattr
->mode
= S_IFDIR
| S_IRUGO
| S_IXUGO
;
3735 static int nfs4_proc_lookup_common(struct rpc_clnt
**clnt
, struct inode
*dir
,
3736 const struct qstr
*name
, struct nfs_fh
*fhandle
,
3737 struct nfs_fattr
*fattr
, struct nfs4_label
*label
)
3739 struct nfs4_exception exception
= { };
3740 struct rpc_clnt
*client
= *clnt
;
3743 err
= _nfs4_proc_lookup(client
, dir
, name
, fhandle
, fattr
, label
);
3744 trace_nfs4_lookup(dir
, name
, err
);
3746 case -NFS4ERR_BADNAME
:
3749 case -NFS4ERR_MOVED
:
3750 err
= nfs4_get_referral(client
, dir
, name
, fattr
, fhandle
);
3751 if (err
== -NFS4ERR_MOVED
)
3752 err
= nfs4_handle_exception(NFS_SERVER(dir
), err
, &exception
);
3754 case -NFS4ERR_WRONGSEC
:
3756 if (client
!= *clnt
)
3758 client
= nfs4_negotiate_security(client
, dir
, name
);
3760 return PTR_ERR(client
);
3762 exception
.retry
= 1;
3765 err
= nfs4_handle_exception(NFS_SERVER(dir
), err
, &exception
);
3767 } while (exception
.retry
);
3772 else if (client
!= *clnt
)
3773 rpc_shutdown_client(client
);
3778 static int nfs4_proc_lookup(struct inode
*dir
, const struct qstr
*name
,
3779 struct nfs_fh
*fhandle
, struct nfs_fattr
*fattr
,
3780 struct nfs4_label
*label
)
3783 struct rpc_clnt
*client
= NFS_CLIENT(dir
);
3785 status
= nfs4_proc_lookup_common(&client
, dir
, name
, fhandle
, fattr
, label
);
3786 if (client
!= NFS_CLIENT(dir
)) {
3787 rpc_shutdown_client(client
);
3788 nfs_fixup_secinfo_attributes(fattr
);
3794 nfs4_proc_lookup_mountpoint(struct inode
*dir
, const struct qstr
*name
,
3795 struct nfs_fh
*fhandle
, struct nfs_fattr
*fattr
)
3797 struct rpc_clnt
*client
= NFS_CLIENT(dir
);
3800 status
= nfs4_proc_lookup_common(&client
, dir
, name
, fhandle
, fattr
, NULL
);
3802 return ERR_PTR(status
);
3803 return (client
== NFS_CLIENT(dir
)) ? rpc_clone_client(client
) : client
;
3806 static int _nfs4_proc_access(struct inode
*inode
, struct nfs_access_entry
*entry
)
3808 struct nfs_server
*server
= NFS_SERVER(inode
);
3809 struct nfs4_accessargs args
= {
3810 .fh
= NFS_FH(inode
),
3811 .bitmask
= server
->cache_consistency_bitmask
,
3813 struct nfs4_accessres res
= {
3816 struct rpc_message msg
= {
3817 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_ACCESS
],
3820 .rpc_cred
= entry
->cred
,
3822 int mode
= entry
->mask
;
3826 * Determine which access bits we want to ask for...
3828 if (mode
& MAY_READ
)
3829 args
.access
|= NFS4_ACCESS_READ
;
3830 if (S_ISDIR(inode
->i_mode
)) {
3831 if (mode
& MAY_WRITE
)
3832 args
.access
|= NFS4_ACCESS_MODIFY
| NFS4_ACCESS_EXTEND
| NFS4_ACCESS_DELETE
;
3833 if (mode
& MAY_EXEC
)
3834 args
.access
|= NFS4_ACCESS_LOOKUP
;
3836 if (mode
& MAY_WRITE
)
3837 args
.access
|= NFS4_ACCESS_MODIFY
| NFS4_ACCESS_EXTEND
;
3838 if (mode
& MAY_EXEC
)
3839 args
.access
|= NFS4_ACCESS_EXECUTE
;
3842 res
.fattr
= nfs_alloc_fattr();
3843 if (res
.fattr
== NULL
)
3846 status
= nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
3848 nfs_access_set_mask(entry
, res
.access
);
3849 nfs_refresh_inode(inode
, res
.fattr
);
3851 nfs_free_fattr(res
.fattr
);
3855 static int nfs4_proc_access(struct inode
*inode
, struct nfs_access_entry
*entry
)
3857 struct nfs4_exception exception
= { };
3860 err
= _nfs4_proc_access(inode
, entry
);
3861 trace_nfs4_access(inode
, err
);
3862 err
= nfs4_handle_exception(NFS_SERVER(inode
), err
,
3864 } while (exception
.retry
);
3869 * TODO: For the time being, we don't try to get any attributes
3870 * along with any of the zero-copy operations READ, READDIR,
3873 * In the case of the first three, we want to put the GETATTR
3874 * after the read-type operation -- this is because it is hard
3875 * to predict the length of a GETATTR response in v4, and thus
3876 * align the READ data correctly. This means that the GETATTR
3877 * may end up partially falling into the page cache, and we should
3878 * shift it into the 'tail' of the xdr_buf before processing.
3879 * To do this efficiently, we need to know the total length
3880 * of data received, which doesn't seem to be available outside
3883 * In the case of WRITE, we also want to put the GETATTR after
3884 * the operation -- in this case because we want to make sure
3885 * we get the post-operation mtime and size.
3887 * Both of these changes to the XDR layer would in fact be quite
3888 * minor, but I decided to leave them for a subsequent patch.
3890 static int _nfs4_proc_readlink(struct inode
*inode
, struct page
*page
,
3891 unsigned int pgbase
, unsigned int pglen
)
3893 struct nfs4_readlink args
= {
3894 .fh
= NFS_FH(inode
),
3899 struct nfs4_readlink_res res
;
3900 struct rpc_message msg
= {
3901 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_READLINK
],
3906 return nfs4_call_sync(NFS_SERVER(inode
)->client
, NFS_SERVER(inode
), &msg
, &args
.seq_args
, &res
.seq_res
, 0);
3909 static int nfs4_proc_readlink(struct inode
*inode
, struct page
*page
,
3910 unsigned int pgbase
, unsigned int pglen
)
3912 struct nfs4_exception exception
= { };
3915 err
= _nfs4_proc_readlink(inode
, page
, pgbase
, pglen
);
3916 trace_nfs4_readlink(inode
, err
);
3917 err
= nfs4_handle_exception(NFS_SERVER(inode
), err
,
3919 } while (exception
.retry
);
3924 * This is just for mknod. open(O_CREAT) will always do ->open_context().
3927 nfs4_proc_create(struct inode
*dir
, struct dentry
*dentry
, struct iattr
*sattr
,
3930 struct nfs_server
*server
= NFS_SERVER(dir
);
3931 struct nfs4_label l
, *ilabel
= NULL
;
3932 struct nfs_open_context
*ctx
;
3933 struct nfs4_state
*state
;
3936 ctx
= alloc_nfs_open_context(dentry
, FMODE_READ
, NULL
);
3938 return PTR_ERR(ctx
);
3940 ilabel
= nfs4_label_init_security(dir
, dentry
, sattr
, &l
);
3942 if (!(server
->attr_bitmask
[2] & FATTR4_WORD2_MODE_UMASK
))
3943 sattr
->ia_mode
&= ~current_umask();
3944 state
= nfs4_do_open(dir
, ctx
, flags
, sattr
, ilabel
, NULL
);
3945 if (IS_ERR(state
)) {
3946 status
= PTR_ERR(state
);
3950 nfs4_label_release_security(ilabel
);
3951 put_nfs_open_context(ctx
);
3955 static int _nfs4_proc_remove(struct inode
*dir
, const struct qstr
*name
)
3957 struct nfs_server
*server
= NFS_SERVER(dir
);
3958 struct nfs_removeargs args
= {
3962 struct nfs_removeres res
= {
3965 struct rpc_message msg
= {
3966 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_REMOVE
],
3970 unsigned long timestamp
= jiffies
;
3973 status
= nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 1);
3975 update_changeattr(dir
, &res
.cinfo
, timestamp
);
3979 static int nfs4_proc_remove(struct inode
*dir
, const struct qstr
*name
)
3981 struct nfs4_exception exception
= { };
3984 err
= _nfs4_proc_remove(dir
, name
);
3985 trace_nfs4_remove(dir
, name
, err
);
3986 err
= nfs4_handle_exception(NFS_SERVER(dir
), err
,
3988 } while (exception
.retry
);
3992 static void nfs4_proc_unlink_setup(struct rpc_message
*msg
, struct inode
*dir
)
3994 struct nfs_server
*server
= NFS_SERVER(dir
);
3995 struct nfs_removeargs
*args
= msg
->rpc_argp
;
3996 struct nfs_removeres
*res
= msg
->rpc_resp
;
3998 res
->server
= server
;
3999 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_REMOVE
];
4000 nfs4_init_sequence(&args
->seq_args
, &res
->seq_res
, 1);
4002 nfs_fattr_init(res
->dir_attr
);
4005 static void nfs4_proc_unlink_rpc_prepare(struct rpc_task
*task
, struct nfs_unlinkdata
*data
)
4007 nfs4_setup_sequence(NFS_SB(data
->dentry
->d_sb
)->nfs_client
,
4008 &data
->args
.seq_args
,
4013 static int nfs4_proc_unlink_done(struct rpc_task
*task
, struct inode
*dir
)
4015 struct nfs_unlinkdata
*data
= task
->tk_calldata
;
4016 struct nfs_removeres
*res
= &data
->res
;
4018 if (!nfs4_sequence_done(task
, &res
->seq_res
))
4020 if (nfs4_async_handle_error(task
, res
->server
, NULL
,
4021 &data
->timeout
) == -EAGAIN
)
4023 if (task
->tk_status
== 0)
4024 update_changeattr(dir
, &res
->cinfo
, res
->dir_attr
->time_start
);
4028 static void nfs4_proc_rename_setup(struct rpc_message
*msg
, struct inode
*dir
)
4030 struct nfs_server
*server
= NFS_SERVER(dir
);
4031 struct nfs_renameargs
*arg
= msg
->rpc_argp
;
4032 struct nfs_renameres
*res
= msg
->rpc_resp
;
4034 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RENAME
];
4035 res
->server
= server
;
4036 nfs4_init_sequence(&arg
->seq_args
, &res
->seq_res
, 1);
4039 static void nfs4_proc_rename_rpc_prepare(struct rpc_task
*task
, struct nfs_renamedata
*data
)
4041 nfs4_setup_sequence(NFS_SERVER(data
->old_dir
)->nfs_client
,
4042 &data
->args
.seq_args
,
4047 static int nfs4_proc_rename_done(struct rpc_task
*task
, struct inode
*old_dir
,
4048 struct inode
*new_dir
)
4050 struct nfs_renamedata
*data
= task
->tk_calldata
;
4051 struct nfs_renameres
*res
= &data
->res
;
4053 if (!nfs4_sequence_done(task
, &res
->seq_res
))
4055 if (nfs4_async_handle_error(task
, res
->server
, NULL
, &data
->timeout
) == -EAGAIN
)
4058 if (task
->tk_status
== 0) {
4059 update_changeattr(old_dir
, &res
->old_cinfo
, res
->old_fattr
->time_start
);
4060 if (new_dir
!= old_dir
)
4061 update_changeattr(new_dir
, &res
->new_cinfo
, res
->new_fattr
->time_start
);
4066 static int _nfs4_proc_link(struct inode
*inode
, struct inode
*dir
, const struct qstr
*name
)
4068 struct nfs_server
*server
= NFS_SERVER(inode
);
4069 struct nfs4_link_arg arg
= {
4070 .fh
= NFS_FH(inode
),
4071 .dir_fh
= NFS_FH(dir
),
4073 .bitmask
= server
->attr_bitmask
,
4075 struct nfs4_link_res res
= {
4079 struct rpc_message msg
= {
4080 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LINK
],
4084 int status
= -ENOMEM
;
4086 res
.fattr
= nfs_alloc_fattr();
4087 if (res
.fattr
== NULL
)
4090 res
.label
= nfs4_label_alloc(server
, GFP_KERNEL
);
4091 if (IS_ERR(res
.label
)) {
4092 status
= PTR_ERR(res
.label
);
4095 arg
.bitmask
= nfs4_bitmask(server
, res
.label
);
4097 status
= nfs4_call_sync(server
->client
, server
, &msg
, &arg
.seq_args
, &res
.seq_res
, 1);
4099 update_changeattr(dir
, &res
.cinfo
, res
.fattr
->time_start
);
4100 status
= nfs_post_op_update_inode(inode
, res
.fattr
);
4102 nfs_setsecurity(inode
, res
.fattr
, res
.label
);
4106 nfs4_label_free(res
.label
);
4109 nfs_free_fattr(res
.fattr
);
4113 static int nfs4_proc_link(struct inode
*inode
, struct inode
*dir
, const struct qstr
*name
)
4115 struct nfs4_exception exception
= { };
4118 err
= nfs4_handle_exception(NFS_SERVER(inode
),
4119 _nfs4_proc_link(inode
, dir
, name
),
4121 } while (exception
.retry
);
4125 struct nfs4_createdata
{
4126 struct rpc_message msg
;
4127 struct nfs4_create_arg arg
;
4128 struct nfs4_create_res res
;
4130 struct nfs_fattr fattr
;
4131 struct nfs4_label
*label
;
4134 static struct nfs4_createdata
*nfs4_alloc_createdata(struct inode
*dir
,
4135 const struct qstr
*name
, struct iattr
*sattr
, u32 ftype
)
4137 struct nfs4_createdata
*data
;
4139 data
= kzalloc(sizeof(*data
), GFP_KERNEL
);
4141 struct nfs_server
*server
= NFS_SERVER(dir
);
4143 data
->label
= nfs4_label_alloc(server
, GFP_KERNEL
);
4144 if (IS_ERR(data
->label
))
4147 data
->msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_CREATE
];
4148 data
->msg
.rpc_argp
= &data
->arg
;
4149 data
->msg
.rpc_resp
= &data
->res
;
4150 data
->arg
.dir_fh
= NFS_FH(dir
);
4151 data
->arg
.server
= server
;
4152 data
->arg
.name
= name
;
4153 data
->arg
.attrs
= sattr
;
4154 data
->arg
.ftype
= ftype
;
4155 data
->arg
.bitmask
= nfs4_bitmask(server
, data
->label
);
4156 data
->arg
.umask
= current_umask();
4157 data
->res
.server
= server
;
4158 data
->res
.fh
= &data
->fh
;
4159 data
->res
.fattr
= &data
->fattr
;
4160 data
->res
.label
= data
->label
;
4161 nfs_fattr_init(data
->res
.fattr
);
4169 static int nfs4_do_create(struct inode
*dir
, struct dentry
*dentry
, struct nfs4_createdata
*data
)
4171 int status
= nfs4_call_sync(NFS_SERVER(dir
)->client
, NFS_SERVER(dir
), &data
->msg
,
4172 &data
->arg
.seq_args
, &data
->res
.seq_res
, 1);
4174 update_changeattr(dir
, &data
->res
.dir_cinfo
,
4175 data
->res
.fattr
->time_start
);
4176 status
= nfs_instantiate(dentry
, data
->res
.fh
, data
->res
.fattr
, data
->res
.label
);
4181 static void nfs4_free_createdata(struct nfs4_createdata
*data
)
4183 nfs4_label_free(data
->label
);
4187 static int _nfs4_proc_symlink(struct inode
*dir
, struct dentry
*dentry
,
4188 struct page
*page
, unsigned int len
, struct iattr
*sattr
,
4189 struct nfs4_label
*label
)
4191 struct nfs4_createdata
*data
;
4192 int status
= -ENAMETOOLONG
;
4194 if (len
> NFS4_MAXPATHLEN
)
4198 data
= nfs4_alloc_createdata(dir
, &dentry
->d_name
, sattr
, NF4LNK
);
4202 data
->msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SYMLINK
];
4203 data
->arg
.u
.symlink
.pages
= &page
;
4204 data
->arg
.u
.symlink
.len
= len
;
4205 data
->arg
.label
= label
;
4207 status
= nfs4_do_create(dir
, dentry
, data
);
4209 nfs4_free_createdata(data
);
4214 static int nfs4_proc_symlink(struct inode
*dir
, struct dentry
*dentry
,
4215 struct page
*page
, unsigned int len
, struct iattr
*sattr
)
4217 struct nfs4_exception exception
= { };
4218 struct nfs4_label l
, *label
= NULL
;
4221 label
= nfs4_label_init_security(dir
, dentry
, sattr
, &l
);
4224 err
= _nfs4_proc_symlink(dir
, dentry
, page
, len
, sattr
, label
);
4225 trace_nfs4_symlink(dir
, &dentry
->d_name
, err
);
4226 err
= nfs4_handle_exception(NFS_SERVER(dir
), err
,
4228 } while (exception
.retry
);
4230 nfs4_label_release_security(label
);
4234 static int _nfs4_proc_mkdir(struct inode
*dir
, struct dentry
*dentry
,
4235 struct iattr
*sattr
, struct nfs4_label
*label
)
4237 struct nfs4_createdata
*data
;
4238 int status
= -ENOMEM
;
4240 data
= nfs4_alloc_createdata(dir
, &dentry
->d_name
, sattr
, NF4DIR
);
4244 data
->arg
.label
= label
;
4245 status
= nfs4_do_create(dir
, dentry
, data
);
4247 nfs4_free_createdata(data
);
4252 static int nfs4_proc_mkdir(struct inode
*dir
, struct dentry
*dentry
,
4253 struct iattr
*sattr
)
4255 struct nfs_server
*server
= NFS_SERVER(dir
);
4256 struct nfs4_exception exception
= { };
4257 struct nfs4_label l
, *label
= NULL
;
4260 label
= nfs4_label_init_security(dir
, dentry
, sattr
, &l
);
4262 if (!(server
->attr_bitmask
[2] & FATTR4_WORD2_MODE_UMASK
))
4263 sattr
->ia_mode
&= ~current_umask();
4265 err
= _nfs4_proc_mkdir(dir
, dentry
, sattr
, label
);
4266 trace_nfs4_mkdir(dir
, &dentry
->d_name
, err
);
4267 err
= nfs4_handle_exception(NFS_SERVER(dir
), err
,
4269 } while (exception
.retry
);
4270 nfs4_label_release_security(label
);
4275 static int _nfs4_proc_readdir(struct dentry
*dentry
, struct rpc_cred
*cred
,
4276 u64 cookie
, struct page
**pages
, unsigned int count
, int plus
)
4278 struct inode
*dir
= d_inode(dentry
);
4279 struct nfs4_readdir_arg args
= {
4284 .bitmask
= NFS_SERVER(d_inode(dentry
))->attr_bitmask
,
4287 struct nfs4_readdir_res res
;
4288 struct rpc_message msg
= {
4289 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_READDIR
],
4296 dprintk("%s: dentry = %pd2, cookie = %Lu\n", __func__
,
4298 (unsigned long long)cookie
);
4299 nfs4_setup_readdir(cookie
, NFS_I(dir
)->cookieverf
, dentry
, &args
);
4300 res
.pgbase
= args
.pgbase
;
4301 status
= nfs4_call_sync(NFS_SERVER(dir
)->client
, NFS_SERVER(dir
), &msg
, &args
.seq_args
, &res
.seq_res
, 0);
4303 memcpy(NFS_I(dir
)->cookieverf
, res
.verifier
.data
, NFS4_VERIFIER_SIZE
);
4304 status
+= args
.pgbase
;
4307 nfs_invalidate_atime(dir
);
4309 dprintk("%s: returns %d\n", __func__
, status
);
4313 static int nfs4_proc_readdir(struct dentry
*dentry
, struct rpc_cred
*cred
,
4314 u64 cookie
, struct page
**pages
, unsigned int count
, int plus
)
4316 struct nfs4_exception exception
= { };
4319 err
= _nfs4_proc_readdir(dentry
, cred
, cookie
,
4320 pages
, count
, plus
);
4321 trace_nfs4_readdir(d_inode(dentry
), err
);
4322 err
= nfs4_handle_exception(NFS_SERVER(d_inode(dentry
)), err
,
4324 } while (exception
.retry
);
4328 static int _nfs4_proc_mknod(struct inode
*dir
, struct dentry
*dentry
,
4329 struct iattr
*sattr
, struct nfs4_label
*label
, dev_t rdev
)
4331 struct nfs4_createdata
*data
;
4332 int mode
= sattr
->ia_mode
;
4333 int status
= -ENOMEM
;
4335 data
= nfs4_alloc_createdata(dir
, &dentry
->d_name
, sattr
, NF4SOCK
);
4340 data
->arg
.ftype
= NF4FIFO
;
4341 else if (S_ISBLK(mode
)) {
4342 data
->arg
.ftype
= NF4BLK
;
4343 data
->arg
.u
.device
.specdata1
= MAJOR(rdev
);
4344 data
->arg
.u
.device
.specdata2
= MINOR(rdev
);
4346 else if (S_ISCHR(mode
)) {
4347 data
->arg
.ftype
= NF4CHR
;
4348 data
->arg
.u
.device
.specdata1
= MAJOR(rdev
);
4349 data
->arg
.u
.device
.specdata2
= MINOR(rdev
);
4350 } else if (!S_ISSOCK(mode
)) {
4355 data
->arg
.label
= label
;
4356 status
= nfs4_do_create(dir
, dentry
, data
);
4358 nfs4_free_createdata(data
);
4363 static int nfs4_proc_mknod(struct inode
*dir
, struct dentry
*dentry
,
4364 struct iattr
*sattr
, dev_t rdev
)
4366 struct nfs_server
*server
= NFS_SERVER(dir
);
4367 struct nfs4_exception exception
= { };
4368 struct nfs4_label l
, *label
= NULL
;
4371 label
= nfs4_label_init_security(dir
, dentry
, sattr
, &l
);
4373 if (!(server
->attr_bitmask
[2] & FATTR4_WORD2_MODE_UMASK
))
4374 sattr
->ia_mode
&= ~current_umask();
4376 err
= _nfs4_proc_mknod(dir
, dentry
, sattr
, label
, rdev
);
4377 trace_nfs4_mknod(dir
, &dentry
->d_name
, err
);
4378 err
= nfs4_handle_exception(NFS_SERVER(dir
), err
,
4380 } while (exception
.retry
);
4382 nfs4_label_release_security(label
);
4387 static int _nfs4_proc_statfs(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
4388 struct nfs_fsstat
*fsstat
)
4390 struct nfs4_statfs_arg args
= {
4392 .bitmask
= server
->attr_bitmask
,
4394 struct nfs4_statfs_res res
= {
4397 struct rpc_message msg
= {
4398 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_STATFS
],
4403 nfs_fattr_init(fsstat
->fattr
);
4404 return nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
4407 static int nfs4_proc_statfs(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fsstat
*fsstat
)
4409 struct nfs4_exception exception
= { };
4412 err
= nfs4_handle_exception(server
,
4413 _nfs4_proc_statfs(server
, fhandle
, fsstat
),
4415 } while (exception
.retry
);
4419 static int _nfs4_do_fsinfo(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
4420 struct nfs_fsinfo
*fsinfo
)
4422 struct nfs4_fsinfo_arg args
= {
4424 .bitmask
= server
->attr_bitmask
,
4426 struct nfs4_fsinfo_res res
= {
4429 struct rpc_message msg
= {
4430 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_FSINFO
],
4435 return nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
4438 static int nfs4_do_fsinfo(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fsinfo
*fsinfo
)
4440 struct nfs4_exception exception
= { };
4441 unsigned long now
= jiffies
;
4445 err
= _nfs4_do_fsinfo(server
, fhandle
, fsinfo
);
4446 trace_nfs4_fsinfo(server
, fhandle
, fsinfo
->fattr
, err
);
4448 nfs4_set_lease_period(server
->nfs_client
,
4449 fsinfo
->lease_time
* HZ
,
4453 err
= nfs4_handle_exception(server
, err
, &exception
);
4454 } while (exception
.retry
);
4458 static int nfs4_proc_fsinfo(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fsinfo
*fsinfo
)
4462 nfs_fattr_init(fsinfo
->fattr
);
4463 error
= nfs4_do_fsinfo(server
, fhandle
, fsinfo
);
4465 /* block layout checks this! */
4466 server
->pnfs_blksize
= fsinfo
->blksize
;
4467 set_pnfs_layoutdriver(server
, fhandle
, fsinfo
);
4473 static int _nfs4_proc_pathconf(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
4474 struct nfs_pathconf
*pathconf
)
4476 struct nfs4_pathconf_arg args
= {
4478 .bitmask
= server
->attr_bitmask
,
4480 struct nfs4_pathconf_res res
= {
4481 .pathconf
= pathconf
,
4483 struct rpc_message msg
= {
4484 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_PATHCONF
],
4489 /* None of the pathconf attributes are mandatory to implement */
4490 if ((args
.bitmask
[0] & nfs4_pathconf_bitmap
[0]) == 0) {
4491 memset(pathconf
, 0, sizeof(*pathconf
));
4495 nfs_fattr_init(pathconf
->fattr
);
4496 return nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
4499 static int nfs4_proc_pathconf(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
4500 struct nfs_pathconf
*pathconf
)
4502 struct nfs4_exception exception
= { };
4506 err
= nfs4_handle_exception(server
,
4507 _nfs4_proc_pathconf(server
, fhandle
, pathconf
),
4509 } while (exception
.retry
);
4513 int nfs4_set_rw_stateid(nfs4_stateid
*stateid
,
4514 const struct nfs_open_context
*ctx
,
4515 const struct nfs_lock_context
*l_ctx
,
4518 return nfs4_select_rw_stateid(ctx
->state
, fmode
, l_ctx
, stateid
, NULL
);
4520 EXPORT_SYMBOL_GPL(nfs4_set_rw_stateid
);
4522 static bool nfs4_stateid_is_current(nfs4_stateid
*stateid
,
4523 const struct nfs_open_context
*ctx
,
4524 const struct nfs_lock_context
*l_ctx
,
4527 nfs4_stateid current_stateid
;
4529 /* If the current stateid represents a lost lock, then exit */
4530 if (nfs4_set_rw_stateid(¤t_stateid
, ctx
, l_ctx
, fmode
) == -EIO
)
4532 return nfs4_stateid_match(stateid
, ¤t_stateid
);
4535 static bool nfs4_error_stateid_expired(int err
)
4538 case -NFS4ERR_DELEG_REVOKED
:
4539 case -NFS4ERR_ADMIN_REVOKED
:
4540 case -NFS4ERR_BAD_STATEID
:
4541 case -NFS4ERR_STALE_STATEID
:
4542 case -NFS4ERR_OLD_STATEID
:
4543 case -NFS4ERR_OPENMODE
:
4544 case -NFS4ERR_EXPIRED
:
4550 static int nfs4_read_done_cb(struct rpc_task
*task
, struct nfs_pgio_header
*hdr
)
4552 struct nfs_server
*server
= NFS_SERVER(hdr
->inode
);
4554 trace_nfs4_read(hdr
, task
->tk_status
);
4555 if (task
->tk_status
< 0) {
4556 struct nfs4_exception exception
= {
4557 .inode
= hdr
->inode
,
4558 .state
= hdr
->args
.context
->state
,
4559 .stateid
= &hdr
->args
.stateid
,
4561 task
->tk_status
= nfs4_async_handle_exception(task
,
4562 server
, task
->tk_status
, &exception
);
4563 if (exception
.retry
) {
4564 rpc_restart_call_prepare(task
);
4569 if (task
->tk_status
> 0)
4570 renew_lease(server
, hdr
->timestamp
);
4574 static bool nfs4_read_stateid_changed(struct rpc_task
*task
,
4575 struct nfs_pgio_args
*args
)
4578 if (!nfs4_error_stateid_expired(task
->tk_status
) ||
4579 nfs4_stateid_is_current(&args
->stateid
,
4584 rpc_restart_call_prepare(task
);
4588 static int nfs4_read_done(struct rpc_task
*task
, struct nfs_pgio_header
*hdr
)
4591 dprintk("--> %s\n", __func__
);
4593 if (!nfs4_sequence_done(task
, &hdr
->res
.seq_res
))
4595 if (nfs4_read_stateid_changed(task
, &hdr
->args
))
4597 if (task
->tk_status
> 0)
4598 nfs_invalidate_atime(hdr
->inode
);
4599 return hdr
->pgio_done_cb
? hdr
->pgio_done_cb(task
, hdr
) :
4600 nfs4_read_done_cb(task
, hdr
);
4603 static void nfs4_proc_read_setup(struct nfs_pgio_header
*hdr
,
4604 struct rpc_message
*msg
)
4606 hdr
->timestamp
= jiffies
;
4607 if (!hdr
->pgio_done_cb
)
4608 hdr
->pgio_done_cb
= nfs4_read_done_cb
;
4609 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_READ
];
4610 nfs4_init_sequence(&hdr
->args
.seq_args
, &hdr
->res
.seq_res
, 0);
4613 static int nfs4_proc_pgio_rpc_prepare(struct rpc_task
*task
,
4614 struct nfs_pgio_header
*hdr
)
4616 if (nfs4_setup_sequence(NFS_SERVER(hdr
->inode
)->nfs_client
,
4617 &hdr
->args
.seq_args
,
4621 if (nfs4_set_rw_stateid(&hdr
->args
.stateid
, hdr
->args
.context
,
4622 hdr
->args
.lock_context
,
4623 hdr
->rw_mode
) == -EIO
)
4625 if (unlikely(test_bit(NFS_CONTEXT_BAD
, &hdr
->args
.context
->flags
)))
4630 static int nfs4_write_done_cb(struct rpc_task
*task
,
4631 struct nfs_pgio_header
*hdr
)
4633 struct inode
*inode
= hdr
->inode
;
4635 trace_nfs4_write(hdr
, task
->tk_status
);
4636 if (task
->tk_status
< 0) {
4637 struct nfs4_exception exception
= {
4638 .inode
= hdr
->inode
,
4639 .state
= hdr
->args
.context
->state
,
4640 .stateid
= &hdr
->args
.stateid
,
4642 task
->tk_status
= nfs4_async_handle_exception(task
,
4643 NFS_SERVER(inode
), task
->tk_status
,
4645 if (exception
.retry
) {
4646 rpc_restart_call_prepare(task
);
4650 if (task
->tk_status
>= 0) {
4651 renew_lease(NFS_SERVER(inode
), hdr
->timestamp
);
4652 nfs_writeback_update_inode(hdr
);
4657 static bool nfs4_write_stateid_changed(struct rpc_task
*task
,
4658 struct nfs_pgio_args
*args
)
4661 if (!nfs4_error_stateid_expired(task
->tk_status
) ||
4662 nfs4_stateid_is_current(&args
->stateid
,
4667 rpc_restart_call_prepare(task
);
4671 static int nfs4_write_done(struct rpc_task
*task
, struct nfs_pgio_header
*hdr
)
4673 if (!nfs4_sequence_done(task
, &hdr
->res
.seq_res
))
4675 if (nfs4_write_stateid_changed(task
, &hdr
->args
))
4677 return hdr
->pgio_done_cb
? hdr
->pgio_done_cb(task
, hdr
) :
4678 nfs4_write_done_cb(task
, hdr
);
4682 bool nfs4_write_need_cache_consistency_data(struct nfs_pgio_header
*hdr
)
4684 /* Don't request attributes for pNFS or O_DIRECT writes */
4685 if (hdr
->ds_clp
!= NULL
|| hdr
->dreq
!= NULL
)
4687 /* Otherwise, request attributes if and only if we don't hold
4690 return nfs4_have_delegation(hdr
->inode
, FMODE_READ
) == 0;
4693 static void nfs4_proc_write_setup(struct nfs_pgio_header
*hdr
,
4694 struct rpc_message
*msg
)
4696 struct nfs_server
*server
= NFS_SERVER(hdr
->inode
);
4698 if (!nfs4_write_need_cache_consistency_data(hdr
)) {
4699 hdr
->args
.bitmask
= NULL
;
4700 hdr
->res
.fattr
= NULL
;
4702 hdr
->args
.bitmask
= server
->cache_consistency_bitmask
;
4704 if (!hdr
->pgio_done_cb
)
4705 hdr
->pgio_done_cb
= nfs4_write_done_cb
;
4706 hdr
->res
.server
= server
;
4707 hdr
->timestamp
= jiffies
;
4709 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_WRITE
];
4710 nfs4_init_sequence(&hdr
->args
.seq_args
, &hdr
->res
.seq_res
, 1);
4713 static void nfs4_proc_commit_rpc_prepare(struct rpc_task
*task
, struct nfs_commit_data
*data
)
4715 nfs4_setup_sequence(NFS_SERVER(data
->inode
)->nfs_client
,
4716 &data
->args
.seq_args
,
4721 static int nfs4_commit_done_cb(struct rpc_task
*task
, struct nfs_commit_data
*data
)
4723 struct inode
*inode
= data
->inode
;
4725 trace_nfs4_commit(data
, task
->tk_status
);
4726 if (nfs4_async_handle_error(task
, NFS_SERVER(inode
),
4727 NULL
, NULL
) == -EAGAIN
) {
4728 rpc_restart_call_prepare(task
);
4734 static int nfs4_commit_done(struct rpc_task
*task
, struct nfs_commit_data
*data
)
4736 if (!nfs4_sequence_done(task
, &data
->res
.seq_res
))
4738 return data
->commit_done_cb(task
, data
);
4741 static void nfs4_proc_commit_setup(struct nfs_commit_data
*data
, struct rpc_message
*msg
)
4743 struct nfs_server
*server
= NFS_SERVER(data
->inode
);
4745 if (data
->commit_done_cb
== NULL
)
4746 data
->commit_done_cb
= nfs4_commit_done_cb
;
4747 data
->res
.server
= server
;
4748 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_COMMIT
];
4749 nfs4_init_sequence(&data
->args
.seq_args
, &data
->res
.seq_res
, 1);
4752 struct nfs4_renewdata
{
4753 struct nfs_client
*client
;
4754 unsigned long timestamp
;
4758 * nfs4_proc_async_renew(): This is not one of the nfs_rpc_ops; it is a special
4759 * standalone procedure for queueing an asynchronous RENEW.
4761 static void nfs4_renew_release(void *calldata
)
4763 struct nfs4_renewdata
*data
= calldata
;
4764 struct nfs_client
*clp
= data
->client
;
4766 if (atomic_read(&clp
->cl_count
) > 1)
4767 nfs4_schedule_state_renewal(clp
);
4768 nfs_put_client(clp
);
4772 static void nfs4_renew_done(struct rpc_task
*task
, void *calldata
)
4774 struct nfs4_renewdata
*data
= calldata
;
4775 struct nfs_client
*clp
= data
->client
;
4776 unsigned long timestamp
= data
->timestamp
;
4778 trace_nfs4_renew_async(clp
, task
->tk_status
);
4779 switch (task
->tk_status
) {
4782 case -NFS4ERR_LEASE_MOVED
:
4783 nfs4_schedule_lease_moved_recovery(clp
);
4786 /* Unless we're shutting down, schedule state recovery! */
4787 if (test_bit(NFS_CS_RENEWD
, &clp
->cl_res_state
) == 0)
4789 if (task
->tk_status
!= NFS4ERR_CB_PATH_DOWN
) {
4790 nfs4_schedule_lease_recovery(clp
);
4793 nfs4_schedule_path_down_recovery(clp
);
4795 do_renew_lease(clp
, timestamp
);
4798 static const struct rpc_call_ops nfs4_renew_ops
= {
4799 .rpc_call_done
= nfs4_renew_done
,
4800 .rpc_release
= nfs4_renew_release
,
4803 static int nfs4_proc_async_renew(struct nfs_client
*clp
, struct rpc_cred
*cred
, unsigned renew_flags
)
4805 struct rpc_message msg
= {
4806 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RENEW
],
4810 struct nfs4_renewdata
*data
;
4812 if (renew_flags
== 0)
4814 if (!atomic_inc_not_zero(&clp
->cl_count
))
4816 data
= kmalloc(sizeof(*data
), GFP_NOFS
);
4818 nfs_put_client(clp
);
4822 data
->timestamp
= jiffies
;
4823 return rpc_call_async(clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
,
4824 &nfs4_renew_ops
, data
);
4827 static int nfs4_proc_renew(struct nfs_client
*clp
, struct rpc_cred
*cred
)
4829 struct rpc_message msg
= {
4830 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RENEW
],
4834 unsigned long now
= jiffies
;
4837 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
4840 do_renew_lease(clp
, now
);
4844 static inline int nfs4_server_supports_acls(struct nfs_server
*server
)
4846 return server
->caps
& NFS_CAP_ACLS
;
4849 /* Assuming that XATTR_SIZE_MAX is a multiple of PAGE_SIZE, and that
4850 * it's OK to put sizeof(void) * (XATTR_SIZE_MAX/PAGE_SIZE) bytes on
4853 #define NFS4ACL_MAXPAGES DIV_ROUND_UP(XATTR_SIZE_MAX, PAGE_SIZE)
4855 static int buf_to_pages_noslab(const void *buf
, size_t buflen
,
4856 struct page
**pages
)
4858 struct page
*newpage
, **spages
;
4864 len
= min_t(size_t, PAGE_SIZE
, buflen
);
4865 newpage
= alloc_page(GFP_KERNEL
);
4867 if (newpage
== NULL
)
4869 memcpy(page_address(newpage
), buf
, len
);
4874 } while (buflen
!= 0);
4880 __free_page(spages
[rc
-1]);
4884 struct nfs4_cached_acl
{
4890 static void nfs4_set_cached_acl(struct inode
*inode
, struct nfs4_cached_acl
*acl
)
4892 struct nfs_inode
*nfsi
= NFS_I(inode
);
4894 spin_lock(&inode
->i_lock
);
4895 kfree(nfsi
->nfs4_acl
);
4896 nfsi
->nfs4_acl
= acl
;
4897 spin_unlock(&inode
->i_lock
);
4900 static void nfs4_zap_acl_attr(struct inode
*inode
)
4902 nfs4_set_cached_acl(inode
, NULL
);
4905 static inline ssize_t
nfs4_read_cached_acl(struct inode
*inode
, char *buf
, size_t buflen
)
4907 struct nfs_inode
*nfsi
= NFS_I(inode
);
4908 struct nfs4_cached_acl
*acl
;
4911 spin_lock(&inode
->i_lock
);
4912 acl
= nfsi
->nfs4_acl
;
4915 if (buf
== NULL
) /* user is just asking for length */
4917 if (acl
->cached
== 0)
4919 ret
= -ERANGE
; /* see getxattr(2) man page */
4920 if (acl
->len
> buflen
)
4922 memcpy(buf
, acl
->data
, acl
->len
);
4926 spin_unlock(&inode
->i_lock
);
4930 static void nfs4_write_cached_acl(struct inode
*inode
, struct page
**pages
, size_t pgbase
, size_t acl_len
)
4932 struct nfs4_cached_acl
*acl
;
4933 size_t buflen
= sizeof(*acl
) + acl_len
;
4935 if (buflen
<= PAGE_SIZE
) {
4936 acl
= kmalloc(buflen
, GFP_KERNEL
);
4940 _copy_from_pages(acl
->data
, pages
, pgbase
, acl_len
);
4942 acl
= kmalloc(sizeof(*acl
), GFP_KERNEL
);
4949 nfs4_set_cached_acl(inode
, acl
);
4953 * The getxattr API returns the required buffer length when called with a
4954 * NULL buf. The NFSv4 acl tool then calls getxattr again after allocating
4955 * the required buf. On a NULL buf, we send a page of data to the server
4956 * guessing that the ACL request can be serviced by a page. If so, we cache
4957 * up to the page of ACL data, and the 2nd call to getxattr is serviced by
4958 * the cache. If not so, we throw away the page, and cache the required
4959 * length. The next getxattr call will then produce another round trip to
4960 * the server, this time with the input buf of the required size.
4962 static ssize_t
__nfs4_get_acl_uncached(struct inode
*inode
, void *buf
, size_t buflen
)
4964 struct page
*pages
[NFS4ACL_MAXPAGES
+ 1] = {NULL
, };
4965 struct nfs_getaclargs args
= {
4966 .fh
= NFS_FH(inode
),
4970 struct nfs_getaclres res
= {
4973 struct rpc_message msg
= {
4974 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GETACL
],
4978 unsigned int npages
= DIV_ROUND_UP(buflen
, PAGE_SIZE
) + 1;
4979 int ret
= -ENOMEM
, i
;
4981 if (npages
> ARRAY_SIZE(pages
))
4984 for (i
= 0; i
< npages
; i
++) {
4985 pages
[i
] = alloc_page(GFP_KERNEL
);
4990 /* for decoding across pages */
4991 res
.acl_scratch
= alloc_page(GFP_KERNEL
);
4992 if (!res
.acl_scratch
)
4995 args
.acl_len
= npages
* PAGE_SIZE
;
4997 dprintk("%s buf %p buflen %zu npages %d args.acl_len %zu\n",
4998 __func__
, buf
, buflen
, npages
, args
.acl_len
);
4999 ret
= nfs4_call_sync(NFS_SERVER(inode
)->client
, NFS_SERVER(inode
),
5000 &msg
, &args
.seq_args
, &res
.seq_res
, 0);
5004 /* Handle the case where the passed-in buffer is too short */
5005 if (res
.acl_flags
& NFS4_ACL_TRUNC
) {
5006 /* Did the user only issue a request for the acl length? */
5012 nfs4_write_cached_acl(inode
, pages
, res
.acl_data_offset
, res
.acl_len
);
5014 if (res
.acl_len
> buflen
) {
5018 _copy_from_pages(buf
, pages
, res
.acl_data_offset
, res
.acl_len
);
5023 for (i
= 0; i
< npages
; i
++)
5025 __free_page(pages
[i
]);
5026 if (res
.acl_scratch
)
5027 __free_page(res
.acl_scratch
);
5031 static ssize_t
nfs4_get_acl_uncached(struct inode
*inode
, void *buf
, size_t buflen
)
5033 struct nfs4_exception exception
= { };
5036 ret
= __nfs4_get_acl_uncached(inode
, buf
, buflen
);
5037 trace_nfs4_get_acl(inode
, ret
);
5040 ret
= nfs4_handle_exception(NFS_SERVER(inode
), ret
, &exception
);
5041 } while (exception
.retry
);
5045 static ssize_t
nfs4_proc_get_acl(struct inode
*inode
, void *buf
, size_t buflen
)
5047 struct nfs_server
*server
= NFS_SERVER(inode
);
5050 if (!nfs4_server_supports_acls(server
))
5052 ret
= nfs_revalidate_inode(server
, inode
);
5055 if (NFS_I(inode
)->cache_validity
& NFS_INO_INVALID_ACL
)
5056 nfs_zap_acl_cache(inode
);
5057 ret
= nfs4_read_cached_acl(inode
, buf
, buflen
);
5059 /* -ENOENT is returned if there is no ACL or if there is an ACL
5060 * but no cached acl data, just the acl length */
5062 return nfs4_get_acl_uncached(inode
, buf
, buflen
);
5065 static int __nfs4_proc_set_acl(struct inode
*inode
, const void *buf
, size_t buflen
)
5067 struct nfs_server
*server
= NFS_SERVER(inode
);
5068 struct page
*pages
[NFS4ACL_MAXPAGES
];
5069 struct nfs_setaclargs arg
= {
5070 .fh
= NFS_FH(inode
),
5074 struct nfs_setaclres res
;
5075 struct rpc_message msg
= {
5076 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETACL
],
5080 unsigned int npages
= DIV_ROUND_UP(buflen
, PAGE_SIZE
);
5083 if (!nfs4_server_supports_acls(server
))
5085 if (npages
> ARRAY_SIZE(pages
))
5087 i
= buf_to_pages_noslab(buf
, buflen
, arg
.acl_pages
);
5090 nfs4_inode_return_delegation(inode
);
5091 ret
= nfs4_call_sync(server
->client
, server
, &msg
, &arg
.seq_args
, &res
.seq_res
, 1);
5094 * Free each page after tx, so the only ref left is
5095 * held by the network stack
5098 put_page(pages
[i
-1]);
5101 * Acl update can result in inode attribute update.
5102 * so mark the attribute cache invalid.
5104 spin_lock(&inode
->i_lock
);
5105 NFS_I(inode
)->cache_validity
|= NFS_INO_INVALID_ATTR
;
5106 spin_unlock(&inode
->i_lock
);
5107 nfs_access_zap_cache(inode
);
5108 nfs_zap_acl_cache(inode
);
5112 static int nfs4_proc_set_acl(struct inode
*inode
, const void *buf
, size_t buflen
)
5114 struct nfs4_exception exception
= { };
5117 err
= __nfs4_proc_set_acl(inode
, buf
, buflen
);
5118 trace_nfs4_set_acl(inode
, err
);
5119 err
= nfs4_handle_exception(NFS_SERVER(inode
), err
,
5121 } while (exception
.retry
);
5125 #ifdef CONFIG_NFS_V4_SECURITY_LABEL
5126 static int _nfs4_get_security_label(struct inode
*inode
, void *buf
,
5129 struct nfs_server
*server
= NFS_SERVER(inode
);
5130 struct nfs_fattr fattr
;
5131 struct nfs4_label label
= {0, 0, buflen
, buf
};
5133 u32 bitmask
[3] = { 0, 0, FATTR4_WORD2_SECURITY_LABEL
};
5134 struct nfs4_getattr_arg arg
= {
5135 .fh
= NFS_FH(inode
),
5138 struct nfs4_getattr_res res
= {
5143 struct rpc_message msg
= {
5144 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GETATTR
],
5150 nfs_fattr_init(&fattr
);
5152 ret
= nfs4_call_sync(server
->client
, server
, &msg
, &arg
.seq_args
, &res
.seq_res
, 0);
5155 if (!(fattr
.valid
& NFS_ATTR_FATTR_V4_SECURITY_LABEL
))
5157 if (buflen
< label
.len
)
5162 static int nfs4_get_security_label(struct inode
*inode
, void *buf
,
5165 struct nfs4_exception exception
= { };
5168 if (!nfs_server_capable(inode
, NFS_CAP_SECURITY_LABEL
))
5172 err
= _nfs4_get_security_label(inode
, buf
, buflen
);
5173 trace_nfs4_get_security_label(inode
, err
);
5174 err
= nfs4_handle_exception(NFS_SERVER(inode
), err
,
5176 } while (exception
.retry
);
5180 static int _nfs4_do_set_security_label(struct inode
*inode
,
5181 struct nfs4_label
*ilabel
,
5182 struct nfs_fattr
*fattr
,
5183 struct nfs4_label
*olabel
)
5186 struct iattr sattr
= {0};
5187 struct nfs_server
*server
= NFS_SERVER(inode
);
5188 const u32 bitmask
[3] = { 0, 0, FATTR4_WORD2_SECURITY_LABEL
};
5189 struct nfs_setattrargs arg
= {
5190 .fh
= NFS_FH(inode
),
5196 struct nfs_setattrres res
= {
5201 struct rpc_message msg
= {
5202 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETATTR
],
5208 nfs4_stateid_copy(&arg
.stateid
, &zero_stateid
);
5210 status
= nfs4_call_sync(server
->client
, server
, &msg
, &arg
.seq_args
, &res
.seq_res
, 1);
5212 dprintk("%s failed: %d\n", __func__
, status
);
5217 static int nfs4_do_set_security_label(struct inode
*inode
,
5218 struct nfs4_label
*ilabel
,
5219 struct nfs_fattr
*fattr
,
5220 struct nfs4_label
*olabel
)
5222 struct nfs4_exception exception
= { };
5226 err
= _nfs4_do_set_security_label(inode
, ilabel
,
5228 trace_nfs4_set_security_label(inode
, err
);
5229 err
= nfs4_handle_exception(NFS_SERVER(inode
), err
,
5231 } while (exception
.retry
);
5236 nfs4_set_security_label(struct inode
*inode
, const void *buf
, size_t buflen
)
5238 struct nfs4_label ilabel
, *olabel
= NULL
;
5239 struct nfs_fattr fattr
;
5240 struct rpc_cred
*cred
;
5243 if (!nfs_server_capable(inode
, NFS_CAP_SECURITY_LABEL
))
5246 nfs_fattr_init(&fattr
);
5250 ilabel
.label
= (char *)buf
;
5251 ilabel
.len
= buflen
;
5253 cred
= rpc_lookup_cred();
5255 return PTR_ERR(cred
);
5257 olabel
= nfs4_label_alloc(NFS_SERVER(inode
), GFP_KERNEL
);
5258 if (IS_ERR(olabel
)) {
5259 status
= -PTR_ERR(olabel
);
5263 status
= nfs4_do_set_security_label(inode
, &ilabel
, &fattr
, olabel
);
5265 nfs_setsecurity(inode
, &fattr
, olabel
);
5267 nfs4_label_free(olabel
);
5272 #endif /* CONFIG_NFS_V4_SECURITY_LABEL */
5275 static void nfs4_init_boot_verifier(const struct nfs_client
*clp
,
5276 nfs4_verifier
*bootverf
)
5280 if (test_bit(NFS4CLNT_PURGE_STATE
, &clp
->cl_state
)) {
5281 /* An impossible timestamp guarantees this value
5282 * will never match a generated boot time. */
5283 verf
[0] = cpu_to_be32(U32_MAX
);
5284 verf
[1] = cpu_to_be32(U32_MAX
);
5286 struct nfs_net
*nn
= net_generic(clp
->cl_net
, nfs_net_id
);
5287 u64 ns
= ktime_to_ns(nn
->boot_time
);
5289 verf
[0] = cpu_to_be32(ns
>> 32);
5290 verf
[1] = cpu_to_be32(ns
);
5292 memcpy(bootverf
->data
, verf
, sizeof(bootverf
->data
));
5296 nfs4_init_nonuniform_client_string(struct nfs_client
*clp
)
5301 if (clp
->cl_owner_id
!= NULL
)
5305 len
= 14 + strlen(clp
->cl_ipaddr
) + 1 +
5306 strlen(rpc_peeraddr2str(clp
->cl_rpcclient
, RPC_DISPLAY_ADDR
)) +
5308 strlen(rpc_peeraddr2str(clp
->cl_rpcclient
, RPC_DISPLAY_PROTO
)) +
5312 if (len
> NFS4_OPAQUE_LIMIT
+ 1)
5316 * Since this string is allocated at mount time, and held until the
5317 * nfs_client is destroyed, we can use GFP_KERNEL here w/o worrying
5318 * about a memory-reclaim deadlock.
5320 str
= kmalloc(len
, GFP_KERNEL
);
5325 scnprintf(str
, len
, "Linux NFSv4.0 %s/%s %s",
5327 rpc_peeraddr2str(clp
->cl_rpcclient
, RPC_DISPLAY_ADDR
),
5328 rpc_peeraddr2str(clp
->cl_rpcclient
, RPC_DISPLAY_PROTO
));
5331 clp
->cl_owner_id
= str
;
5336 nfs4_init_uniquifier_client_string(struct nfs_client
*clp
)
5341 len
= 10 + 10 + 1 + 10 + 1 +
5342 strlen(nfs4_client_id_uniquifier
) + 1 +
5343 strlen(clp
->cl_rpcclient
->cl_nodename
) + 1;
5345 if (len
> NFS4_OPAQUE_LIMIT
+ 1)
5349 * Since this string is allocated at mount time, and held until the
5350 * nfs_client is destroyed, we can use GFP_KERNEL here w/o worrying
5351 * about a memory-reclaim deadlock.
5353 str
= kmalloc(len
, GFP_KERNEL
);
5357 scnprintf(str
, len
, "Linux NFSv%u.%u %s/%s",
5358 clp
->rpc_ops
->version
, clp
->cl_minorversion
,
5359 nfs4_client_id_uniquifier
,
5360 clp
->cl_rpcclient
->cl_nodename
);
5361 clp
->cl_owner_id
= str
;
5366 nfs4_init_uniform_client_string(struct nfs_client
*clp
)
5371 if (clp
->cl_owner_id
!= NULL
)
5374 if (nfs4_client_id_uniquifier
[0] != '\0')
5375 return nfs4_init_uniquifier_client_string(clp
);
5377 len
= 10 + 10 + 1 + 10 + 1 +
5378 strlen(clp
->cl_rpcclient
->cl_nodename
) + 1;
5380 if (len
> NFS4_OPAQUE_LIMIT
+ 1)
5384 * Since this string is allocated at mount time, and held until the
5385 * nfs_client is destroyed, we can use GFP_KERNEL here w/o worrying
5386 * about a memory-reclaim deadlock.
5388 str
= kmalloc(len
, GFP_KERNEL
);
5392 scnprintf(str
, len
, "Linux NFSv%u.%u %s",
5393 clp
->rpc_ops
->version
, clp
->cl_minorversion
,
5394 clp
->cl_rpcclient
->cl_nodename
);
5395 clp
->cl_owner_id
= str
;
5400 * nfs4_callback_up_net() starts only "tcp" and "tcp6" callback
5401 * services. Advertise one based on the address family of the
5405 nfs4_init_callback_netid(const struct nfs_client
*clp
, char *buf
, size_t len
)
5407 if (strchr(clp
->cl_ipaddr
, ':') != NULL
)
5408 return scnprintf(buf
, len
, "tcp6");
5410 return scnprintf(buf
, len
, "tcp");
5413 static void nfs4_setclientid_done(struct rpc_task
*task
, void *calldata
)
5415 struct nfs4_setclientid
*sc
= calldata
;
5417 if (task
->tk_status
== 0)
5418 sc
->sc_cred
= get_rpccred(task
->tk_rqstp
->rq_cred
);
5421 static const struct rpc_call_ops nfs4_setclientid_ops
= {
5422 .rpc_call_done
= nfs4_setclientid_done
,
5426 * nfs4_proc_setclientid - Negotiate client ID
5427 * @clp: state data structure
5428 * @program: RPC program for NFSv4 callback service
5429 * @port: IP port number for NFS4 callback service
5430 * @cred: RPC credential to use for this call
5431 * @res: where to place the result
5433 * Returns zero, a negative errno, or a negative NFS4ERR status code.
5435 int nfs4_proc_setclientid(struct nfs_client
*clp
, u32 program
,
5436 unsigned short port
, struct rpc_cred
*cred
,
5437 struct nfs4_setclientid_res
*res
)
5439 nfs4_verifier sc_verifier
;
5440 struct nfs4_setclientid setclientid
= {
5441 .sc_verifier
= &sc_verifier
,
5445 struct rpc_message msg
= {
5446 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETCLIENTID
],
5447 .rpc_argp
= &setclientid
,
5451 struct rpc_task
*task
;
5452 struct rpc_task_setup task_setup_data
= {
5453 .rpc_client
= clp
->cl_rpcclient
,
5454 .rpc_message
= &msg
,
5455 .callback_ops
= &nfs4_setclientid_ops
,
5456 .callback_data
= &setclientid
,
5457 .flags
= RPC_TASK_TIMEOUT
,
5461 /* nfs_client_id4 */
5462 nfs4_init_boot_verifier(clp
, &sc_verifier
);
5464 if (test_bit(NFS_CS_MIGRATION
, &clp
->cl_flags
))
5465 status
= nfs4_init_uniform_client_string(clp
);
5467 status
= nfs4_init_nonuniform_client_string(clp
);
5473 setclientid
.sc_netid_len
=
5474 nfs4_init_callback_netid(clp
,
5475 setclientid
.sc_netid
,
5476 sizeof(setclientid
.sc_netid
));
5477 setclientid
.sc_uaddr_len
= scnprintf(setclientid
.sc_uaddr
,
5478 sizeof(setclientid
.sc_uaddr
), "%s.%u.%u",
5479 clp
->cl_ipaddr
, port
>> 8, port
& 255);
5481 dprintk("NFS call setclientid auth=%s, '%s'\n",
5482 clp
->cl_rpcclient
->cl_auth
->au_ops
->au_name
,
5484 task
= rpc_run_task(&task_setup_data
);
5486 status
= PTR_ERR(task
);
5489 status
= task
->tk_status
;
5490 if (setclientid
.sc_cred
) {
5491 clp
->cl_acceptor
= rpcauth_stringify_acceptor(setclientid
.sc_cred
);
5492 put_rpccred(setclientid
.sc_cred
);
5496 trace_nfs4_setclientid(clp
, status
);
5497 dprintk("NFS reply setclientid: %d\n", status
);
5502 * nfs4_proc_setclientid_confirm - Confirm client ID
5503 * @clp: state data structure
5504 * @res: result of a previous SETCLIENTID
5505 * @cred: RPC credential to use for this call
5507 * Returns zero, a negative errno, or a negative NFS4ERR status code.
5509 int nfs4_proc_setclientid_confirm(struct nfs_client
*clp
,
5510 struct nfs4_setclientid_res
*arg
,
5511 struct rpc_cred
*cred
)
5513 struct rpc_message msg
= {
5514 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETCLIENTID_CONFIRM
],
5520 dprintk("NFS call setclientid_confirm auth=%s, (client ID %llx)\n",
5521 clp
->cl_rpcclient
->cl_auth
->au_ops
->au_name
,
5523 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
5524 trace_nfs4_setclientid_confirm(clp
, status
);
5525 dprintk("NFS reply setclientid_confirm: %d\n", status
);
5529 struct nfs4_delegreturndata
{
5530 struct nfs4_delegreturnargs args
;
5531 struct nfs4_delegreturnres res
;
5533 nfs4_stateid stateid
;
5534 unsigned long timestamp
;
5536 struct nfs4_layoutreturn_args arg
;
5537 struct nfs4_layoutreturn_res res
;
5538 struct nfs4_xdr_opaque_data ld_private
;
5542 struct nfs_fattr fattr
;
5544 struct inode
*inode
;
5547 static void nfs4_delegreturn_done(struct rpc_task
*task
, void *calldata
)
5549 struct nfs4_delegreturndata
*data
= calldata
;
5551 if (!nfs4_sequence_done(task
, &data
->res
.seq_res
))
5554 trace_nfs4_delegreturn_exit(&data
->args
, &data
->res
, task
->tk_status
);
5556 /* Handle Layoutreturn errors */
5557 if (data
->args
.lr_args
&& task
->tk_status
!= 0) {
5558 switch(data
->res
.lr_ret
) {
5560 data
->res
.lr_ret
= -NFS4ERR_NOMATCHING_LAYOUT
;
5563 data
->args
.lr_args
= NULL
;
5564 data
->res
.lr_res
= NULL
;
5566 case -NFS4ERR_ADMIN_REVOKED
:
5567 case -NFS4ERR_DELEG_REVOKED
:
5568 case -NFS4ERR_EXPIRED
:
5569 case -NFS4ERR_BAD_STATEID
:
5570 case -NFS4ERR_OLD_STATEID
:
5571 case -NFS4ERR_UNKNOWN_LAYOUTTYPE
:
5572 case -NFS4ERR_WRONG_CRED
:
5573 data
->args
.lr_args
= NULL
;
5574 data
->res
.lr_res
= NULL
;
5575 data
->res
.lr_ret
= 0;
5576 rpc_restart_call_prepare(task
);
5581 switch (task
->tk_status
) {
5583 renew_lease(data
->res
.server
, data
->timestamp
);
5585 case -NFS4ERR_ADMIN_REVOKED
:
5586 case -NFS4ERR_DELEG_REVOKED
:
5587 case -NFS4ERR_EXPIRED
:
5588 nfs4_free_revoked_stateid(data
->res
.server
,
5590 task
->tk_msg
.rpc_cred
);
5591 case -NFS4ERR_BAD_STATEID
:
5592 case -NFS4ERR_OLD_STATEID
:
5593 case -NFS4ERR_STALE_STATEID
:
5594 task
->tk_status
= 0;
5596 case -NFS4ERR_ACCESS
:
5597 if (data
->args
.bitmask
) {
5598 data
->args
.bitmask
= NULL
;
5599 data
->res
.fattr
= NULL
;
5600 task
->tk_status
= 0;
5601 rpc_restart_call_prepare(task
);
5605 if (nfs4_async_handle_error(task
, data
->res
.server
,
5606 NULL
, NULL
) == -EAGAIN
) {
5607 rpc_restart_call_prepare(task
);
5611 data
->rpc_status
= task
->tk_status
;
5614 static void nfs4_delegreturn_release(void *calldata
)
5616 struct nfs4_delegreturndata
*data
= calldata
;
5617 struct inode
*inode
= data
->inode
;
5621 pnfs_roc_release(&data
->lr
.arg
, &data
->lr
.res
,
5623 nfs_post_op_update_inode_force_wcc(inode
, &data
->fattr
);
5624 nfs_iput_and_deactive(inode
);
5629 static void nfs4_delegreturn_prepare(struct rpc_task
*task
, void *data
)
5631 struct nfs4_delegreturndata
*d_data
;
5633 d_data
= (struct nfs4_delegreturndata
*)data
;
5635 if (!d_data
->lr
.roc
&& nfs4_wait_on_layoutreturn(d_data
->inode
, task
))
5638 nfs4_setup_sequence(d_data
->res
.server
->nfs_client
,
5639 &d_data
->args
.seq_args
,
5640 &d_data
->res
.seq_res
,
5644 static const struct rpc_call_ops nfs4_delegreturn_ops
= {
5645 .rpc_call_prepare
= nfs4_delegreturn_prepare
,
5646 .rpc_call_done
= nfs4_delegreturn_done
,
5647 .rpc_release
= nfs4_delegreturn_release
,
5650 static int _nfs4_proc_delegreturn(struct inode
*inode
, struct rpc_cred
*cred
, const nfs4_stateid
*stateid
, int issync
)
5652 struct nfs4_delegreturndata
*data
;
5653 struct nfs_server
*server
= NFS_SERVER(inode
);
5654 struct rpc_task
*task
;
5655 struct rpc_message msg
= {
5656 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_DELEGRETURN
],
5659 struct rpc_task_setup task_setup_data
= {
5660 .rpc_client
= server
->client
,
5661 .rpc_message
= &msg
,
5662 .callback_ops
= &nfs4_delegreturn_ops
,
5663 .flags
= RPC_TASK_ASYNC
,
5667 data
= kzalloc(sizeof(*data
), GFP_NOFS
);
5670 nfs4_init_sequence(&data
->args
.seq_args
, &data
->res
.seq_res
, 1);
5672 nfs4_state_protect(server
->nfs_client
,
5673 NFS_SP4_MACH_CRED_CLEANUP
,
5674 &task_setup_data
.rpc_client
, &msg
);
5676 data
->args
.fhandle
= &data
->fh
;
5677 data
->args
.stateid
= &data
->stateid
;
5678 data
->args
.bitmask
= server
->cache_consistency_bitmask
;
5679 nfs_copy_fh(&data
->fh
, NFS_FH(inode
));
5680 nfs4_stateid_copy(&data
->stateid
, stateid
);
5681 data
->res
.fattr
= &data
->fattr
;
5682 data
->res
.server
= server
;
5683 data
->res
.lr_ret
= -NFS4ERR_NOMATCHING_LAYOUT
;
5684 data
->lr
.arg
.ld_private
= &data
->lr
.ld_private
;
5685 nfs_fattr_init(data
->res
.fattr
);
5686 data
->timestamp
= jiffies
;
5687 data
->rpc_status
= 0;
5688 data
->lr
.roc
= pnfs_roc(inode
, &data
->lr
.arg
, &data
->lr
.res
, cred
);
5689 data
->inode
= nfs_igrab_and_active(inode
);
5692 data
->args
.lr_args
= &data
->lr
.arg
;
5693 data
->res
.lr_res
= &data
->lr
.res
;
5695 } else if (data
->lr
.roc
) {
5696 pnfs_roc_release(&data
->lr
.arg
, &data
->lr
.res
, 0);
5697 data
->lr
.roc
= false;
5700 task_setup_data
.callback_data
= data
;
5701 msg
.rpc_argp
= &data
->args
;
5702 msg
.rpc_resp
= &data
->res
;
5703 task
= rpc_run_task(&task_setup_data
);
5705 return PTR_ERR(task
);
5708 status
= rpc_wait_for_completion_task(task
);
5711 status
= data
->rpc_status
;
5717 int nfs4_proc_delegreturn(struct inode
*inode
, struct rpc_cred
*cred
, const nfs4_stateid
*stateid
, int issync
)
5719 struct nfs_server
*server
= NFS_SERVER(inode
);
5720 struct nfs4_exception exception
= { };
5723 err
= _nfs4_proc_delegreturn(inode
, cred
, stateid
, issync
);
5724 trace_nfs4_delegreturn(inode
, stateid
, err
);
5726 case -NFS4ERR_STALE_STATEID
:
5727 case -NFS4ERR_EXPIRED
:
5731 err
= nfs4_handle_exception(server
, err
, &exception
);
5732 } while (exception
.retry
);
5736 static int _nfs4_proc_getlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
5738 struct inode
*inode
= state
->inode
;
5739 struct nfs_server
*server
= NFS_SERVER(inode
);
5740 struct nfs_client
*clp
= server
->nfs_client
;
5741 struct nfs_lockt_args arg
= {
5742 .fh
= NFS_FH(inode
),
5745 struct nfs_lockt_res res
= {
5748 struct rpc_message msg
= {
5749 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOCKT
],
5752 .rpc_cred
= state
->owner
->so_cred
,
5754 struct nfs4_lock_state
*lsp
;
5757 arg
.lock_owner
.clientid
= clp
->cl_clientid
;
5758 status
= nfs4_set_lock_state(state
, request
);
5761 lsp
= request
->fl_u
.nfs4_fl
.owner
;
5762 arg
.lock_owner
.id
= lsp
->ls_seqid
.owner_id
;
5763 arg
.lock_owner
.s_dev
= server
->s_dev
;
5764 status
= nfs4_call_sync(server
->client
, server
, &msg
, &arg
.seq_args
, &res
.seq_res
, 1);
5767 request
->fl_type
= F_UNLCK
;
5769 case -NFS4ERR_DENIED
:
5772 request
->fl_ops
->fl_release_private(request
);
5773 request
->fl_ops
= NULL
;
5778 static int nfs4_proc_getlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
5780 struct nfs4_exception exception
= { };
5784 err
= _nfs4_proc_getlk(state
, cmd
, request
);
5785 trace_nfs4_get_lock(request
, state
, cmd
, err
);
5786 err
= nfs4_handle_exception(NFS_SERVER(state
->inode
), err
,
5788 } while (exception
.retry
);
5792 struct nfs4_unlockdata
{
5793 struct nfs_locku_args arg
;
5794 struct nfs_locku_res res
;
5795 struct nfs4_lock_state
*lsp
;
5796 struct nfs_open_context
*ctx
;
5797 struct nfs_lock_context
*l_ctx
;
5798 struct file_lock fl
;
5799 struct nfs_server
*server
;
5800 unsigned long timestamp
;
5803 static struct nfs4_unlockdata
*nfs4_alloc_unlockdata(struct file_lock
*fl
,
5804 struct nfs_open_context
*ctx
,
5805 struct nfs4_lock_state
*lsp
,
5806 struct nfs_seqid
*seqid
)
5808 struct nfs4_unlockdata
*p
;
5809 struct inode
*inode
= lsp
->ls_state
->inode
;
5811 p
= kzalloc(sizeof(*p
), GFP_NOFS
);
5814 p
->arg
.fh
= NFS_FH(inode
);
5816 p
->arg
.seqid
= seqid
;
5817 p
->res
.seqid
= seqid
;
5819 atomic_inc(&lsp
->ls_count
);
5820 /* Ensure we don't close file until we're done freeing locks! */
5821 p
->ctx
= get_nfs_open_context(ctx
);
5822 p
->l_ctx
= nfs_get_lock_context(ctx
);
5823 memcpy(&p
->fl
, fl
, sizeof(p
->fl
));
5824 p
->server
= NFS_SERVER(inode
);
5828 static void nfs4_locku_release_calldata(void *data
)
5830 struct nfs4_unlockdata
*calldata
= data
;
5831 nfs_free_seqid(calldata
->arg
.seqid
);
5832 nfs4_put_lock_state(calldata
->lsp
);
5833 nfs_put_lock_context(calldata
->l_ctx
);
5834 put_nfs_open_context(calldata
->ctx
);
5838 static void nfs4_locku_done(struct rpc_task
*task
, void *data
)
5840 struct nfs4_unlockdata
*calldata
= data
;
5842 if (!nfs4_sequence_done(task
, &calldata
->res
.seq_res
))
5844 switch (task
->tk_status
) {
5846 renew_lease(calldata
->server
, calldata
->timestamp
);
5847 locks_lock_inode_wait(calldata
->lsp
->ls_state
->inode
, &calldata
->fl
);
5848 if (nfs4_update_lock_stateid(calldata
->lsp
,
5849 &calldata
->res
.stateid
))
5851 case -NFS4ERR_ADMIN_REVOKED
:
5852 case -NFS4ERR_EXPIRED
:
5853 nfs4_free_revoked_stateid(calldata
->server
,
5854 &calldata
->arg
.stateid
,
5855 task
->tk_msg
.rpc_cred
);
5856 case -NFS4ERR_BAD_STATEID
:
5857 case -NFS4ERR_OLD_STATEID
:
5858 case -NFS4ERR_STALE_STATEID
:
5859 if (!nfs4_stateid_match(&calldata
->arg
.stateid
,
5860 &calldata
->lsp
->ls_stateid
))
5861 rpc_restart_call_prepare(task
);
5864 if (nfs4_async_handle_error(task
, calldata
->server
,
5865 NULL
, NULL
) == -EAGAIN
)
5866 rpc_restart_call_prepare(task
);
5868 nfs_release_seqid(calldata
->arg
.seqid
);
5871 static void nfs4_locku_prepare(struct rpc_task
*task
, void *data
)
5873 struct nfs4_unlockdata
*calldata
= data
;
5875 if (test_bit(NFS_CONTEXT_UNLOCK
, &calldata
->l_ctx
->open_context
->flags
) &&
5876 nfs_async_iocounter_wait(task
, calldata
->l_ctx
))
5879 if (nfs_wait_on_sequence(calldata
->arg
.seqid
, task
) != 0)
5881 nfs4_stateid_copy(&calldata
->arg
.stateid
, &calldata
->lsp
->ls_stateid
);
5882 if (test_bit(NFS_LOCK_INITIALIZED
, &calldata
->lsp
->ls_flags
) == 0) {
5883 /* Note: exit _without_ running nfs4_locku_done */
5886 calldata
->timestamp
= jiffies
;
5887 if (nfs4_setup_sequence(calldata
->server
->nfs_client
,
5888 &calldata
->arg
.seq_args
,
5889 &calldata
->res
.seq_res
,
5891 nfs_release_seqid(calldata
->arg
.seqid
);
5894 task
->tk_action
= NULL
;
5896 nfs4_sequence_done(task
, &calldata
->res
.seq_res
);
5899 static const struct rpc_call_ops nfs4_locku_ops
= {
5900 .rpc_call_prepare
= nfs4_locku_prepare
,
5901 .rpc_call_done
= nfs4_locku_done
,
5902 .rpc_release
= nfs4_locku_release_calldata
,
5905 static struct rpc_task
*nfs4_do_unlck(struct file_lock
*fl
,
5906 struct nfs_open_context
*ctx
,
5907 struct nfs4_lock_state
*lsp
,
5908 struct nfs_seqid
*seqid
)
5910 struct nfs4_unlockdata
*data
;
5911 struct rpc_message msg
= {
5912 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOCKU
],
5913 .rpc_cred
= ctx
->cred
,
5915 struct rpc_task_setup task_setup_data
= {
5916 .rpc_client
= NFS_CLIENT(lsp
->ls_state
->inode
),
5917 .rpc_message
= &msg
,
5918 .callback_ops
= &nfs4_locku_ops
,
5919 .workqueue
= nfsiod_workqueue
,
5920 .flags
= RPC_TASK_ASYNC
,
5923 nfs4_state_protect(NFS_SERVER(lsp
->ls_state
->inode
)->nfs_client
,
5924 NFS_SP4_MACH_CRED_CLEANUP
, &task_setup_data
.rpc_client
, &msg
);
5926 /* Ensure this is an unlock - when canceling a lock, the
5927 * canceled lock is passed in, and it won't be an unlock.
5929 fl
->fl_type
= F_UNLCK
;
5930 if (fl
->fl_flags
& FL_CLOSE
)
5931 set_bit(NFS_CONTEXT_UNLOCK
, &ctx
->flags
);
5933 data
= nfs4_alloc_unlockdata(fl
, ctx
, lsp
, seqid
);
5935 nfs_free_seqid(seqid
);
5936 return ERR_PTR(-ENOMEM
);
5939 nfs4_init_sequence(&data
->arg
.seq_args
, &data
->res
.seq_res
, 1);
5940 msg
.rpc_argp
= &data
->arg
;
5941 msg
.rpc_resp
= &data
->res
;
5942 task_setup_data
.callback_data
= data
;
5943 return rpc_run_task(&task_setup_data
);
5946 static int nfs4_proc_unlck(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
5948 struct inode
*inode
= state
->inode
;
5949 struct nfs4_state_owner
*sp
= state
->owner
;
5950 struct nfs_inode
*nfsi
= NFS_I(inode
);
5951 struct nfs_seqid
*seqid
;
5952 struct nfs4_lock_state
*lsp
;
5953 struct rpc_task
*task
;
5954 struct nfs_seqid
*(*alloc_seqid
)(struct nfs_seqid_counter
*, gfp_t
);
5956 unsigned char fl_flags
= request
->fl_flags
;
5958 status
= nfs4_set_lock_state(state
, request
);
5959 /* Unlock _before_ we do the RPC call */
5960 request
->fl_flags
|= FL_EXISTS
;
5961 /* Exclude nfs_delegation_claim_locks() */
5962 mutex_lock(&sp
->so_delegreturn_mutex
);
5963 /* Exclude nfs4_reclaim_open_stateid() - note nesting! */
5964 down_read(&nfsi
->rwsem
);
5965 if (locks_lock_inode_wait(inode
, request
) == -ENOENT
) {
5966 up_read(&nfsi
->rwsem
);
5967 mutex_unlock(&sp
->so_delegreturn_mutex
);
5970 up_read(&nfsi
->rwsem
);
5971 mutex_unlock(&sp
->so_delegreturn_mutex
);
5974 /* Is this a delegated lock? */
5975 lsp
= request
->fl_u
.nfs4_fl
.owner
;
5976 if (test_bit(NFS_LOCK_INITIALIZED
, &lsp
->ls_flags
) == 0)
5978 alloc_seqid
= NFS_SERVER(inode
)->nfs_client
->cl_mvops
->alloc_seqid
;
5979 seqid
= alloc_seqid(&lsp
->ls_seqid
, GFP_KERNEL
);
5983 task
= nfs4_do_unlck(request
, nfs_file_open_context(request
->fl_file
), lsp
, seqid
);
5984 status
= PTR_ERR(task
);
5987 status
= rpc_wait_for_completion_task(task
);
5990 request
->fl_flags
= fl_flags
;
5991 trace_nfs4_unlock(request
, state
, F_SETLK
, status
);
5995 struct nfs4_lockdata
{
5996 struct nfs_lock_args arg
;
5997 struct nfs_lock_res res
;
5998 struct nfs4_lock_state
*lsp
;
5999 struct nfs_open_context
*ctx
;
6000 struct file_lock fl
;
6001 unsigned long timestamp
;
6004 struct nfs_server
*server
;
6007 static struct nfs4_lockdata
*nfs4_alloc_lockdata(struct file_lock
*fl
,
6008 struct nfs_open_context
*ctx
, struct nfs4_lock_state
*lsp
,
6011 struct nfs4_lockdata
*p
;
6012 struct inode
*inode
= lsp
->ls_state
->inode
;
6013 struct nfs_server
*server
= NFS_SERVER(inode
);
6014 struct nfs_seqid
*(*alloc_seqid
)(struct nfs_seqid_counter
*, gfp_t
);
6016 p
= kzalloc(sizeof(*p
), gfp_mask
);
6020 p
->arg
.fh
= NFS_FH(inode
);
6022 p
->arg
.open_seqid
= nfs_alloc_seqid(&lsp
->ls_state
->owner
->so_seqid
, gfp_mask
);
6023 if (IS_ERR(p
->arg
.open_seqid
))
6025 alloc_seqid
= server
->nfs_client
->cl_mvops
->alloc_seqid
;
6026 p
->arg
.lock_seqid
= alloc_seqid(&lsp
->ls_seqid
, gfp_mask
);
6027 if (IS_ERR(p
->arg
.lock_seqid
))
6028 goto out_free_seqid
;
6029 p
->arg
.lock_owner
.clientid
= server
->nfs_client
->cl_clientid
;
6030 p
->arg
.lock_owner
.id
= lsp
->ls_seqid
.owner_id
;
6031 p
->arg
.lock_owner
.s_dev
= server
->s_dev
;
6032 p
->res
.lock_seqid
= p
->arg
.lock_seqid
;
6035 atomic_inc(&lsp
->ls_count
);
6036 p
->ctx
= get_nfs_open_context(ctx
);
6037 memcpy(&p
->fl
, fl
, sizeof(p
->fl
));
6040 nfs_free_seqid(p
->arg
.open_seqid
);
6046 static void nfs4_lock_prepare(struct rpc_task
*task
, void *calldata
)
6048 struct nfs4_lockdata
*data
= calldata
;
6049 struct nfs4_state
*state
= data
->lsp
->ls_state
;
6051 dprintk("%s: begin!\n", __func__
);
6052 if (nfs_wait_on_sequence(data
->arg
.lock_seqid
, task
) != 0)
6054 /* Do we need to do an open_to_lock_owner? */
6055 if (!test_bit(NFS_LOCK_INITIALIZED
, &data
->lsp
->ls_flags
)) {
6056 if (nfs_wait_on_sequence(data
->arg
.open_seqid
, task
) != 0) {
6057 goto out_release_lock_seqid
;
6059 nfs4_stateid_copy(&data
->arg
.open_stateid
,
6060 &state
->open_stateid
);
6061 data
->arg
.new_lock_owner
= 1;
6062 data
->res
.open_seqid
= data
->arg
.open_seqid
;
6064 data
->arg
.new_lock_owner
= 0;
6065 nfs4_stateid_copy(&data
->arg
.lock_stateid
,
6066 &data
->lsp
->ls_stateid
);
6068 if (!nfs4_valid_open_stateid(state
)) {
6069 data
->rpc_status
= -EBADF
;
6070 task
->tk_action
= NULL
;
6071 goto out_release_open_seqid
;
6073 data
->timestamp
= jiffies
;
6074 if (nfs4_setup_sequence(data
->server
->nfs_client
,
6075 &data
->arg
.seq_args
,
6079 out_release_open_seqid
:
6080 nfs_release_seqid(data
->arg
.open_seqid
);
6081 out_release_lock_seqid
:
6082 nfs_release_seqid(data
->arg
.lock_seqid
);
6084 nfs4_sequence_done(task
, &data
->res
.seq_res
);
6085 dprintk("%s: done!, ret = %d\n", __func__
, data
->rpc_status
);
6088 static void nfs4_lock_done(struct rpc_task
*task
, void *calldata
)
6090 struct nfs4_lockdata
*data
= calldata
;
6091 struct nfs4_lock_state
*lsp
= data
->lsp
;
6093 dprintk("%s: begin!\n", __func__
);
6095 if (!nfs4_sequence_done(task
, &data
->res
.seq_res
))
6098 data
->rpc_status
= task
->tk_status
;
6099 switch (task
->tk_status
) {
6101 renew_lease(NFS_SERVER(d_inode(data
->ctx
->dentry
)),
6103 if (data
->arg
.new_lock
) {
6104 data
->fl
.fl_flags
&= ~(FL_SLEEP
| FL_ACCESS
);
6105 if (locks_lock_inode_wait(lsp
->ls_state
->inode
, &data
->fl
) < 0) {
6106 rpc_restart_call_prepare(task
);
6110 if (data
->arg
.new_lock_owner
!= 0) {
6111 nfs_confirm_seqid(&lsp
->ls_seqid
, 0);
6112 nfs4_stateid_copy(&lsp
->ls_stateid
, &data
->res
.stateid
);
6113 set_bit(NFS_LOCK_INITIALIZED
, &lsp
->ls_flags
);
6114 } else if (!nfs4_update_lock_stateid(lsp
, &data
->res
.stateid
))
6115 rpc_restart_call_prepare(task
);
6117 case -NFS4ERR_BAD_STATEID
:
6118 case -NFS4ERR_OLD_STATEID
:
6119 case -NFS4ERR_STALE_STATEID
:
6120 case -NFS4ERR_EXPIRED
:
6121 if (data
->arg
.new_lock_owner
!= 0) {
6122 if (!nfs4_stateid_match(&data
->arg
.open_stateid
,
6123 &lsp
->ls_state
->open_stateid
))
6124 rpc_restart_call_prepare(task
);
6125 } else if (!nfs4_stateid_match(&data
->arg
.lock_stateid
,
6127 rpc_restart_call_prepare(task
);
6129 dprintk("%s: done, ret = %d!\n", __func__
, data
->rpc_status
);
6132 static void nfs4_lock_release(void *calldata
)
6134 struct nfs4_lockdata
*data
= calldata
;
6136 dprintk("%s: begin!\n", __func__
);
6137 nfs_free_seqid(data
->arg
.open_seqid
);
6138 if (data
->cancelled
!= 0) {
6139 struct rpc_task
*task
;
6140 task
= nfs4_do_unlck(&data
->fl
, data
->ctx
, data
->lsp
,
6141 data
->arg
.lock_seqid
);
6143 rpc_put_task_async(task
);
6144 dprintk("%s: cancelling lock!\n", __func__
);
6146 nfs_free_seqid(data
->arg
.lock_seqid
);
6147 nfs4_put_lock_state(data
->lsp
);
6148 put_nfs_open_context(data
->ctx
);
6150 dprintk("%s: done!\n", __func__
);
6153 static const struct rpc_call_ops nfs4_lock_ops
= {
6154 .rpc_call_prepare
= nfs4_lock_prepare
,
6155 .rpc_call_done
= nfs4_lock_done
,
6156 .rpc_release
= nfs4_lock_release
,
6159 static void nfs4_handle_setlk_error(struct nfs_server
*server
, struct nfs4_lock_state
*lsp
, int new_lock_owner
, int error
)
6162 case -NFS4ERR_ADMIN_REVOKED
:
6163 case -NFS4ERR_EXPIRED
:
6164 case -NFS4ERR_BAD_STATEID
:
6165 lsp
->ls_seqid
.flags
&= ~NFS_SEQID_CONFIRMED
;
6166 if (new_lock_owner
!= 0 ||
6167 test_bit(NFS_LOCK_INITIALIZED
, &lsp
->ls_flags
) != 0)
6168 nfs4_schedule_stateid_recovery(server
, lsp
->ls_state
);
6170 case -NFS4ERR_STALE_STATEID
:
6171 lsp
->ls_seqid
.flags
&= ~NFS_SEQID_CONFIRMED
;
6172 nfs4_schedule_lease_recovery(server
->nfs_client
);
6176 static int _nfs4_do_setlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*fl
, int recovery_type
)
6178 struct nfs4_lockdata
*data
;
6179 struct rpc_task
*task
;
6180 struct rpc_message msg
= {
6181 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOCK
],
6182 .rpc_cred
= state
->owner
->so_cred
,
6184 struct rpc_task_setup task_setup_data
= {
6185 .rpc_client
= NFS_CLIENT(state
->inode
),
6186 .rpc_message
= &msg
,
6187 .callback_ops
= &nfs4_lock_ops
,
6188 .workqueue
= nfsiod_workqueue
,
6189 .flags
= RPC_TASK_ASYNC
,
6193 dprintk("%s: begin!\n", __func__
);
6194 data
= nfs4_alloc_lockdata(fl
, nfs_file_open_context(fl
->fl_file
),
6195 fl
->fl_u
.nfs4_fl
.owner
,
6196 recovery_type
== NFS_LOCK_NEW
? GFP_KERNEL
: GFP_NOFS
);
6200 data
->arg
.block
= 1;
6201 nfs4_init_sequence(&data
->arg
.seq_args
, &data
->res
.seq_res
, 1);
6202 msg
.rpc_argp
= &data
->arg
;
6203 msg
.rpc_resp
= &data
->res
;
6204 task_setup_data
.callback_data
= data
;
6205 if (recovery_type
> NFS_LOCK_NEW
) {
6206 if (recovery_type
== NFS_LOCK_RECLAIM
)
6207 data
->arg
.reclaim
= NFS_LOCK_RECLAIM
;
6208 nfs4_set_sequence_privileged(&data
->arg
.seq_args
);
6210 data
->arg
.new_lock
= 1;
6211 task
= rpc_run_task(&task_setup_data
);
6213 return PTR_ERR(task
);
6214 ret
= rpc_wait_for_completion_task(task
);
6216 ret
= data
->rpc_status
;
6218 nfs4_handle_setlk_error(data
->server
, data
->lsp
,
6219 data
->arg
.new_lock_owner
, ret
);
6221 data
->cancelled
= 1;
6223 dprintk("%s: done, ret = %d!\n", __func__
, ret
);
6224 trace_nfs4_set_lock(fl
, state
, &data
->res
.stateid
, cmd
, ret
);
6228 static int nfs4_lock_reclaim(struct nfs4_state
*state
, struct file_lock
*request
)
6230 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
6231 struct nfs4_exception exception
= {
6232 .inode
= state
->inode
,
6237 /* Cache the lock if possible... */
6238 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) != 0)
6240 err
= _nfs4_do_setlk(state
, F_SETLK
, request
, NFS_LOCK_RECLAIM
);
6241 if (err
!= -NFS4ERR_DELAY
)
6243 nfs4_handle_exception(server
, err
, &exception
);
6244 } while (exception
.retry
);
6248 static int nfs4_lock_expired(struct nfs4_state
*state
, struct file_lock
*request
)
6250 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
6251 struct nfs4_exception exception
= {
6252 .inode
= state
->inode
,
6256 err
= nfs4_set_lock_state(state
, request
);
6259 if (!recover_lost_locks
) {
6260 set_bit(NFS_LOCK_LOST
, &request
->fl_u
.nfs4_fl
.owner
->ls_flags
);
6264 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) != 0)
6266 err
= _nfs4_do_setlk(state
, F_SETLK
, request
, NFS_LOCK_EXPIRED
);
6270 case -NFS4ERR_GRACE
:
6271 case -NFS4ERR_DELAY
:
6272 nfs4_handle_exception(server
, err
, &exception
);
6275 } while (exception
.retry
);
6280 #if defined(CONFIG_NFS_V4_1)
6281 static int nfs41_lock_expired(struct nfs4_state
*state
, struct file_lock
*request
)
6283 struct nfs4_lock_state
*lsp
;
6286 status
= nfs4_set_lock_state(state
, request
);
6289 lsp
= request
->fl_u
.nfs4_fl
.owner
;
6290 if (test_bit(NFS_LOCK_INITIALIZED
, &lsp
->ls_flags
) ||
6291 test_bit(NFS_LOCK_LOST
, &lsp
->ls_flags
))
6293 return nfs4_lock_expired(state
, request
);
6297 static int _nfs4_proc_setlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
6299 struct nfs_inode
*nfsi
= NFS_I(state
->inode
);
6300 struct nfs4_state_owner
*sp
= state
->owner
;
6301 unsigned char fl_flags
= request
->fl_flags
;
6304 request
->fl_flags
|= FL_ACCESS
;
6305 status
= locks_lock_inode_wait(state
->inode
, request
);
6308 mutex_lock(&sp
->so_delegreturn_mutex
);
6309 down_read(&nfsi
->rwsem
);
6310 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
)) {
6311 /* Yes: cache locks! */
6312 /* ...but avoid races with delegation recall... */
6313 request
->fl_flags
= fl_flags
& ~FL_SLEEP
;
6314 status
= locks_lock_inode_wait(state
->inode
, request
);
6315 up_read(&nfsi
->rwsem
);
6316 mutex_unlock(&sp
->so_delegreturn_mutex
);
6319 up_read(&nfsi
->rwsem
);
6320 mutex_unlock(&sp
->so_delegreturn_mutex
);
6321 status
= _nfs4_do_setlk(state
, cmd
, request
, NFS_LOCK_NEW
);
6323 request
->fl_flags
= fl_flags
;
6327 static int nfs4_proc_setlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
6329 struct nfs4_exception exception
= {
6331 .inode
= state
->inode
,
6336 err
= _nfs4_proc_setlk(state
, cmd
, request
);
6337 if (err
== -NFS4ERR_DENIED
)
6339 err
= nfs4_handle_exception(NFS_SERVER(state
->inode
),
6341 } while (exception
.retry
);
6345 #define NFS4_LOCK_MINTIMEOUT (1 * HZ)
6346 #define NFS4_LOCK_MAXTIMEOUT (30 * HZ)
6349 nfs4_retry_setlk_simple(struct nfs4_state
*state
, int cmd
,
6350 struct file_lock
*request
)
6352 int status
= -ERESTARTSYS
;
6353 unsigned long timeout
= NFS4_LOCK_MINTIMEOUT
;
6355 while(!signalled()) {
6356 status
= nfs4_proc_setlk(state
, cmd
, request
);
6357 if ((status
!= -EAGAIN
) || IS_SETLK(cmd
))
6359 freezable_schedule_timeout_interruptible(timeout
);
6361 timeout
= min_t(unsigned long, NFS4_LOCK_MAXTIMEOUT
, timeout
);
6362 status
= -ERESTARTSYS
;
6367 #ifdef CONFIG_NFS_V4_1
6368 struct nfs4_lock_waiter
{
6369 struct task_struct
*task
;
6370 struct inode
*inode
;
6371 struct nfs_lowner
*owner
;
6376 nfs4_wake_lock_waiter(wait_queue_t
*wait
, unsigned int mode
, int flags
, void *key
)
6379 struct cb_notify_lock_args
*cbnl
= key
;
6380 struct nfs4_lock_waiter
*waiter
= wait
->private;
6381 struct nfs_lowner
*lowner
= &cbnl
->cbnl_owner
,
6382 *wowner
= waiter
->owner
;
6384 /* Only wake if the callback was for the same owner */
6385 if (lowner
->clientid
!= wowner
->clientid
||
6386 lowner
->id
!= wowner
->id
||
6387 lowner
->s_dev
!= wowner
->s_dev
)
6390 /* Make sure it's for the right inode */
6391 if (nfs_compare_fh(NFS_FH(waiter
->inode
), &cbnl
->cbnl_fh
))
6394 waiter
->notified
= true;
6396 /* override "private" so we can use default_wake_function */
6397 wait
->private = waiter
->task
;
6398 ret
= autoremove_wake_function(wait
, mode
, flags
, key
);
6399 wait
->private = waiter
;
6404 nfs4_retry_setlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
6406 int status
= -ERESTARTSYS
;
6407 unsigned long flags
;
6408 struct nfs4_lock_state
*lsp
= request
->fl_u
.nfs4_fl
.owner
;
6409 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
6410 struct nfs_client
*clp
= server
->nfs_client
;
6411 wait_queue_head_t
*q
= &clp
->cl_lock_waitq
;
6412 struct nfs_lowner owner
= { .clientid
= clp
->cl_clientid
,
6413 .id
= lsp
->ls_seqid
.owner_id
,
6414 .s_dev
= server
->s_dev
};
6415 struct nfs4_lock_waiter waiter
= { .task
= current
,
6416 .inode
= state
->inode
,
6418 .notified
= false };
6421 /* Don't bother with waitqueue if we don't expect a callback */
6422 if (!test_bit(NFS_STATE_MAY_NOTIFY_LOCK
, &state
->flags
))
6423 return nfs4_retry_setlk_simple(state
, cmd
, request
);
6426 wait
.private = &waiter
;
6427 wait
.func
= nfs4_wake_lock_waiter
;
6428 add_wait_queue(q
, &wait
);
6430 while(!signalled()) {
6431 status
= nfs4_proc_setlk(state
, cmd
, request
);
6432 if ((status
!= -EAGAIN
) || IS_SETLK(cmd
))
6435 status
= -ERESTARTSYS
;
6436 spin_lock_irqsave(&q
->lock
, flags
);
6437 if (waiter
.notified
) {
6438 spin_unlock_irqrestore(&q
->lock
, flags
);
6441 set_current_state(TASK_INTERRUPTIBLE
);
6442 spin_unlock_irqrestore(&q
->lock
, flags
);
6444 freezable_schedule_timeout_interruptible(NFS4_LOCK_MAXTIMEOUT
);
6447 finish_wait(q
, &wait
);
6450 #else /* !CONFIG_NFS_V4_1 */
6452 nfs4_retry_setlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
6454 return nfs4_retry_setlk_simple(state
, cmd
, request
);
6459 nfs4_proc_lock(struct file
*filp
, int cmd
, struct file_lock
*request
)
6461 struct nfs_open_context
*ctx
;
6462 struct nfs4_state
*state
;
6465 /* verify open state */
6466 ctx
= nfs_file_open_context(filp
);
6469 if (IS_GETLK(cmd
)) {
6471 return nfs4_proc_getlk(state
, F_GETLK
, request
);
6475 if (!(IS_SETLK(cmd
) || IS_SETLKW(cmd
)))
6478 if (request
->fl_type
== F_UNLCK
) {
6480 return nfs4_proc_unlck(state
, cmd
, request
);
6487 if ((request
->fl_flags
& FL_POSIX
) &&
6488 !test_bit(NFS_STATE_POSIX_LOCKS
, &state
->flags
))
6491 status
= nfs4_set_lock_state(state
, request
);
6495 return nfs4_retry_setlk(state
, cmd
, request
);
6498 int nfs4_lock_delegation_recall(struct file_lock
*fl
, struct nfs4_state
*state
, const nfs4_stateid
*stateid
)
6500 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
6503 err
= nfs4_set_lock_state(state
, fl
);
6506 err
= _nfs4_do_setlk(state
, F_SETLK
, fl
, NFS_LOCK_NEW
);
6507 return nfs4_handle_delegation_recall_error(server
, state
, stateid
, err
);
6510 struct nfs_release_lockowner_data
{
6511 struct nfs4_lock_state
*lsp
;
6512 struct nfs_server
*server
;
6513 struct nfs_release_lockowner_args args
;
6514 struct nfs_release_lockowner_res res
;
6515 unsigned long timestamp
;
6518 static void nfs4_release_lockowner_prepare(struct rpc_task
*task
, void *calldata
)
6520 struct nfs_release_lockowner_data
*data
= calldata
;
6521 struct nfs_server
*server
= data
->server
;
6522 nfs4_setup_sequence(server
->nfs_client
, &data
->args
.seq_args
,
6523 &data
->res
.seq_res
, task
);
6524 data
->args
.lock_owner
.clientid
= server
->nfs_client
->cl_clientid
;
6525 data
->timestamp
= jiffies
;
6528 static void nfs4_release_lockowner_done(struct rpc_task
*task
, void *calldata
)
6530 struct nfs_release_lockowner_data
*data
= calldata
;
6531 struct nfs_server
*server
= data
->server
;
6533 nfs40_sequence_done(task
, &data
->res
.seq_res
);
6535 switch (task
->tk_status
) {
6537 renew_lease(server
, data
->timestamp
);
6539 case -NFS4ERR_STALE_CLIENTID
:
6540 case -NFS4ERR_EXPIRED
:
6541 nfs4_schedule_lease_recovery(server
->nfs_client
);
6543 case -NFS4ERR_LEASE_MOVED
:
6544 case -NFS4ERR_DELAY
:
6545 if (nfs4_async_handle_error(task
, server
,
6546 NULL
, NULL
) == -EAGAIN
)
6547 rpc_restart_call_prepare(task
);
6551 static void nfs4_release_lockowner_release(void *calldata
)
6553 struct nfs_release_lockowner_data
*data
= calldata
;
6554 nfs4_free_lock_state(data
->server
, data
->lsp
);
6558 static const struct rpc_call_ops nfs4_release_lockowner_ops
= {
6559 .rpc_call_prepare
= nfs4_release_lockowner_prepare
,
6560 .rpc_call_done
= nfs4_release_lockowner_done
,
6561 .rpc_release
= nfs4_release_lockowner_release
,
6565 nfs4_release_lockowner(struct nfs_server
*server
, struct nfs4_lock_state
*lsp
)
6567 struct nfs_release_lockowner_data
*data
;
6568 struct rpc_message msg
= {
6569 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RELEASE_LOCKOWNER
],
6572 if (server
->nfs_client
->cl_mvops
->minor_version
!= 0)
6575 data
= kmalloc(sizeof(*data
), GFP_NOFS
);
6579 data
->server
= server
;
6580 data
->args
.lock_owner
.clientid
= server
->nfs_client
->cl_clientid
;
6581 data
->args
.lock_owner
.id
= lsp
->ls_seqid
.owner_id
;
6582 data
->args
.lock_owner
.s_dev
= server
->s_dev
;
6584 msg
.rpc_argp
= &data
->args
;
6585 msg
.rpc_resp
= &data
->res
;
6586 nfs4_init_sequence(&data
->args
.seq_args
, &data
->res
.seq_res
, 0);
6587 rpc_call_async(server
->client
, &msg
, 0, &nfs4_release_lockowner_ops
, data
);
6590 #define XATTR_NAME_NFSV4_ACL "system.nfs4_acl"
6592 static int nfs4_xattr_set_nfs4_acl(const struct xattr_handler
*handler
,
6593 struct dentry
*unused
, struct inode
*inode
,
6594 const char *key
, const void *buf
,
6595 size_t buflen
, int flags
)
6597 return nfs4_proc_set_acl(inode
, buf
, buflen
);
6600 static int nfs4_xattr_get_nfs4_acl(const struct xattr_handler
*handler
,
6601 struct dentry
*unused
, struct inode
*inode
,
6602 const char *key
, void *buf
, size_t buflen
)
6604 return nfs4_proc_get_acl(inode
, buf
, buflen
);
6607 static bool nfs4_xattr_list_nfs4_acl(struct dentry
*dentry
)
6609 return nfs4_server_supports_acls(NFS_SERVER(d_inode(dentry
)));
6612 #ifdef CONFIG_NFS_V4_SECURITY_LABEL
6614 static int nfs4_xattr_set_nfs4_label(const struct xattr_handler
*handler
,
6615 struct dentry
*unused
, struct inode
*inode
,
6616 const char *key
, const void *buf
,
6617 size_t buflen
, int flags
)
6619 if (security_ismaclabel(key
))
6620 return nfs4_set_security_label(inode
, buf
, buflen
);
6625 static int nfs4_xattr_get_nfs4_label(const struct xattr_handler
*handler
,
6626 struct dentry
*unused
, struct inode
*inode
,
6627 const char *key
, void *buf
, size_t buflen
)
6629 if (security_ismaclabel(key
))
6630 return nfs4_get_security_label(inode
, buf
, buflen
);
6635 nfs4_listxattr_nfs4_label(struct inode
*inode
, char *list
, size_t list_len
)
6639 if (nfs_server_capable(inode
, NFS_CAP_SECURITY_LABEL
)) {
6640 len
= security_inode_listsecurity(inode
, list
, list_len
);
6641 if (list_len
&& len
> list_len
)
6647 static const struct xattr_handler nfs4_xattr_nfs4_label_handler
= {
6648 .prefix
= XATTR_SECURITY_PREFIX
,
6649 .get
= nfs4_xattr_get_nfs4_label
,
6650 .set
= nfs4_xattr_set_nfs4_label
,
6656 nfs4_listxattr_nfs4_label(struct inode
*inode
, char *list
, size_t list_len
)
6664 * nfs_fhget will use either the mounted_on_fileid or the fileid
6666 static void nfs_fixup_referral_attributes(struct nfs_fattr
*fattr
)
6668 if (!(((fattr
->valid
& NFS_ATTR_FATTR_MOUNTED_ON_FILEID
) ||
6669 (fattr
->valid
& NFS_ATTR_FATTR_FILEID
)) &&
6670 (fattr
->valid
& NFS_ATTR_FATTR_FSID
) &&
6671 (fattr
->valid
& NFS_ATTR_FATTR_V4_LOCATIONS
)))
6674 fattr
->valid
|= NFS_ATTR_FATTR_TYPE
| NFS_ATTR_FATTR_MODE
|
6675 NFS_ATTR_FATTR_NLINK
| NFS_ATTR_FATTR_V4_REFERRAL
;
6676 fattr
->mode
= S_IFDIR
| S_IRUGO
| S_IXUGO
;
6680 static int _nfs4_proc_fs_locations(struct rpc_clnt
*client
, struct inode
*dir
,
6681 const struct qstr
*name
,
6682 struct nfs4_fs_locations
*fs_locations
,
6685 struct nfs_server
*server
= NFS_SERVER(dir
);
6687 [0] = FATTR4_WORD0_FSID
| FATTR4_WORD0_FS_LOCATIONS
,
6689 struct nfs4_fs_locations_arg args
= {
6690 .dir_fh
= NFS_FH(dir
),
6695 struct nfs4_fs_locations_res res
= {
6696 .fs_locations
= fs_locations
,
6698 struct rpc_message msg
= {
6699 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_FS_LOCATIONS
],
6705 dprintk("%s: start\n", __func__
);
6707 /* Ask for the fileid of the absent filesystem if mounted_on_fileid
6708 * is not supported */
6709 if (NFS_SERVER(dir
)->attr_bitmask
[1] & FATTR4_WORD1_MOUNTED_ON_FILEID
)
6710 bitmask
[1] |= FATTR4_WORD1_MOUNTED_ON_FILEID
;
6712 bitmask
[0] |= FATTR4_WORD0_FILEID
;
6714 nfs_fattr_init(&fs_locations
->fattr
);
6715 fs_locations
->server
= server
;
6716 fs_locations
->nlocations
= 0;
6717 status
= nfs4_call_sync(client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
6718 dprintk("%s: returned status = %d\n", __func__
, status
);
6722 int nfs4_proc_fs_locations(struct rpc_clnt
*client
, struct inode
*dir
,
6723 const struct qstr
*name
,
6724 struct nfs4_fs_locations
*fs_locations
,
6727 struct nfs4_exception exception
= { };
6730 err
= _nfs4_proc_fs_locations(client
, dir
, name
,
6731 fs_locations
, page
);
6732 trace_nfs4_get_fs_locations(dir
, name
, err
);
6733 err
= nfs4_handle_exception(NFS_SERVER(dir
), err
,
6735 } while (exception
.retry
);
6740 * This operation also signals the server that this client is
6741 * performing migration recovery. The server can stop returning
6742 * NFS4ERR_LEASE_MOVED to this client. A RENEW operation is
6743 * appended to this compound to identify the client ID which is
6744 * performing recovery.
6746 static int _nfs40_proc_get_locations(struct inode
*inode
,
6747 struct nfs4_fs_locations
*locations
,
6748 struct page
*page
, struct rpc_cred
*cred
)
6750 struct nfs_server
*server
= NFS_SERVER(inode
);
6751 struct rpc_clnt
*clnt
= server
->client
;
6753 [0] = FATTR4_WORD0_FSID
| FATTR4_WORD0_FS_LOCATIONS
,
6755 struct nfs4_fs_locations_arg args
= {
6756 .clientid
= server
->nfs_client
->cl_clientid
,
6757 .fh
= NFS_FH(inode
),
6760 .migration
= 1, /* skip LOOKUP */
6761 .renew
= 1, /* append RENEW */
6763 struct nfs4_fs_locations_res res
= {
6764 .fs_locations
= locations
,
6768 struct rpc_message msg
= {
6769 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_FS_LOCATIONS
],
6774 unsigned long now
= jiffies
;
6777 nfs_fattr_init(&locations
->fattr
);
6778 locations
->server
= server
;
6779 locations
->nlocations
= 0;
6781 nfs4_init_sequence(&args
.seq_args
, &res
.seq_res
, 0);
6782 nfs4_set_sequence_privileged(&args
.seq_args
);
6783 status
= nfs4_call_sync_sequence(clnt
, server
, &msg
,
6784 &args
.seq_args
, &res
.seq_res
);
6788 renew_lease(server
, now
);
6792 #ifdef CONFIG_NFS_V4_1
6795 * This operation also signals the server that this client is
6796 * performing migration recovery. The server can stop asserting
6797 * SEQ4_STATUS_LEASE_MOVED for this client. The client ID
6798 * performing this operation is identified in the SEQUENCE
6799 * operation in this compound.
6801 * When the client supports GETATTR(fs_locations_info), it can
6802 * be plumbed in here.
6804 static int _nfs41_proc_get_locations(struct inode
*inode
,
6805 struct nfs4_fs_locations
*locations
,
6806 struct page
*page
, struct rpc_cred
*cred
)
6808 struct nfs_server
*server
= NFS_SERVER(inode
);
6809 struct rpc_clnt
*clnt
= server
->client
;
6811 [0] = FATTR4_WORD0_FSID
| FATTR4_WORD0_FS_LOCATIONS
,
6813 struct nfs4_fs_locations_arg args
= {
6814 .fh
= NFS_FH(inode
),
6817 .migration
= 1, /* skip LOOKUP */
6819 struct nfs4_fs_locations_res res
= {
6820 .fs_locations
= locations
,
6823 struct rpc_message msg
= {
6824 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_FS_LOCATIONS
],
6831 nfs_fattr_init(&locations
->fattr
);
6832 locations
->server
= server
;
6833 locations
->nlocations
= 0;
6835 nfs4_init_sequence(&args
.seq_args
, &res
.seq_res
, 0);
6836 nfs4_set_sequence_privileged(&args
.seq_args
);
6837 status
= nfs4_call_sync_sequence(clnt
, server
, &msg
,
6838 &args
.seq_args
, &res
.seq_res
);
6839 if (status
== NFS4_OK
&&
6840 res
.seq_res
.sr_status_flags
& SEQ4_STATUS_LEASE_MOVED
)
6841 status
= -NFS4ERR_LEASE_MOVED
;
6845 #endif /* CONFIG_NFS_V4_1 */
6848 * nfs4_proc_get_locations - discover locations for a migrated FSID
6849 * @inode: inode on FSID that is migrating
6850 * @locations: result of query
6852 * @cred: credential to use for this operation
6854 * Returns NFS4_OK on success, a negative NFS4ERR status code if the
6855 * operation failed, or a negative errno if a local error occurred.
6857 * On success, "locations" is filled in, but if the server has
6858 * no locations information, NFS_ATTR_FATTR_V4_LOCATIONS is not
6861 * -NFS4ERR_LEASE_MOVED is returned if the server still has leases
6862 * from this client that require migration recovery.
6864 int nfs4_proc_get_locations(struct inode
*inode
,
6865 struct nfs4_fs_locations
*locations
,
6866 struct page
*page
, struct rpc_cred
*cred
)
6868 struct nfs_server
*server
= NFS_SERVER(inode
);
6869 struct nfs_client
*clp
= server
->nfs_client
;
6870 const struct nfs4_mig_recovery_ops
*ops
=
6871 clp
->cl_mvops
->mig_recovery_ops
;
6872 struct nfs4_exception exception
= { };
6875 dprintk("%s: FSID %llx:%llx on \"%s\"\n", __func__
,
6876 (unsigned long long)server
->fsid
.major
,
6877 (unsigned long long)server
->fsid
.minor
,
6879 nfs_display_fhandle(NFS_FH(inode
), __func__
);
6882 status
= ops
->get_locations(inode
, locations
, page
, cred
);
6883 if (status
!= -NFS4ERR_DELAY
)
6885 nfs4_handle_exception(server
, status
, &exception
);
6886 } while (exception
.retry
);
6891 * This operation also signals the server that this client is
6892 * performing "lease moved" recovery. The server can stop
6893 * returning NFS4ERR_LEASE_MOVED to this client. A RENEW operation
6894 * is appended to this compound to identify the client ID which is
6895 * performing recovery.
6897 static int _nfs40_proc_fsid_present(struct inode
*inode
, struct rpc_cred
*cred
)
6899 struct nfs_server
*server
= NFS_SERVER(inode
);
6900 struct nfs_client
*clp
= NFS_SERVER(inode
)->nfs_client
;
6901 struct rpc_clnt
*clnt
= server
->client
;
6902 struct nfs4_fsid_present_arg args
= {
6903 .fh
= NFS_FH(inode
),
6904 .clientid
= clp
->cl_clientid
,
6905 .renew
= 1, /* append RENEW */
6907 struct nfs4_fsid_present_res res
= {
6910 struct rpc_message msg
= {
6911 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_FSID_PRESENT
],
6916 unsigned long now
= jiffies
;
6919 res
.fh
= nfs_alloc_fhandle();
6923 nfs4_init_sequence(&args
.seq_args
, &res
.seq_res
, 0);
6924 nfs4_set_sequence_privileged(&args
.seq_args
);
6925 status
= nfs4_call_sync_sequence(clnt
, server
, &msg
,
6926 &args
.seq_args
, &res
.seq_res
);
6927 nfs_free_fhandle(res
.fh
);
6931 do_renew_lease(clp
, now
);
6935 #ifdef CONFIG_NFS_V4_1
6938 * This operation also signals the server that this client is
6939 * performing "lease moved" recovery. The server can stop asserting
6940 * SEQ4_STATUS_LEASE_MOVED for this client. The client ID performing
6941 * this operation is identified in the SEQUENCE operation in this
6944 static int _nfs41_proc_fsid_present(struct inode
*inode
, struct rpc_cred
*cred
)
6946 struct nfs_server
*server
= NFS_SERVER(inode
);
6947 struct rpc_clnt
*clnt
= server
->client
;
6948 struct nfs4_fsid_present_arg args
= {
6949 .fh
= NFS_FH(inode
),
6951 struct nfs4_fsid_present_res res
= {
6953 struct rpc_message msg
= {
6954 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_FSID_PRESENT
],
6961 res
.fh
= nfs_alloc_fhandle();
6965 nfs4_init_sequence(&args
.seq_args
, &res
.seq_res
, 0);
6966 nfs4_set_sequence_privileged(&args
.seq_args
);
6967 status
= nfs4_call_sync_sequence(clnt
, server
, &msg
,
6968 &args
.seq_args
, &res
.seq_res
);
6969 nfs_free_fhandle(res
.fh
);
6970 if (status
== NFS4_OK
&&
6971 res
.seq_res
.sr_status_flags
& SEQ4_STATUS_LEASE_MOVED
)
6972 status
= -NFS4ERR_LEASE_MOVED
;
6976 #endif /* CONFIG_NFS_V4_1 */
6979 * nfs4_proc_fsid_present - Is this FSID present or absent on server?
6980 * @inode: inode on FSID to check
6981 * @cred: credential to use for this operation
6983 * Server indicates whether the FSID is present, moved, or not
6984 * recognized. This operation is necessary to clear a LEASE_MOVED
6985 * condition for this client ID.
6987 * Returns NFS4_OK if the FSID is present on this server,
6988 * -NFS4ERR_MOVED if the FSID is no longer present, a negative
6989 * NFS4ERR code if some error occurred on the server, or a
6990 * negative errno if a local failure occurred.
6992 int nfs4_proc_fsid_present(struct inode
*inode
, struct rpc_cred
*cred
)
6994 struct nfs_server
*server
= NFS_SERVER(inode
);
6995 struct nfs_client
*clp
= server
->nfs_client
;
6996 const struct nfs4_mig_recovery_ops
*ops
=
6997 clp
->cl_mvops
->mig_recovery_ops
;
6998 struct nfs4_exception exception
= { };
7001 dprintk("%s: FSID %llx:%llx on \"%s\"\n", __func__
,
7002 (unsigned long long)server
->fsid
.major
,
7003 (unsigned long long)server
->fsid
.minor
,
7005 nfs_display_fhandle(NFS_FH(inode
), __func__
);
7008 status
= ops
->fsid_present(inode
, cred
);
7009 if (status
!= -NFS4ERR_DELAY
)
7011 nfs4_handle_exception(server
, status
, &exception
);
7012 } while (exception
.retry
);
7017 * If 'use_integrity' is true and the state managment nfs_client
7018 * cl_rpcclient is using krb5i/p, use the integrity protected cl_rpcclient
7019 * and the machine credential as per RFC3530bis and RFC5661 Security
7020 * Considerations sections. Otherwise, just use the user cred with the
7021 * filesystem's rpc_client.
7023 static int _nfs4_proc_secinfo(struct inode
*dir
, const struct qstr
*name
, struct nfs4_secinfo_flavors
*flavors
, bool use_integrity
)
7026 struct nfs4_secinfo_arg args
= {
7027 .dir_fh
= NFS_FH(dir
),
7030 struct nfs4_secinfo_res res
= {
7033 struct rpc_message msg
= {
7034 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SECINFO
],
7038 struct rpc_clnt
*clnt
= NFS_SERVER(dir
)->client
;
7039 struct rpc_cred
*cred
= NULL
;
7041 if (use_integrity
) {
7042 clnt
= NFS_SERVER(dir
)->nfs_client
->cl_rpcclient
;
7043 cred
= nfs4_get_clid_cred(NFS_SERVER(dir
)->nfs_client
);
7044 msg
.rpc_cred
= cred
;
7047 dprintk("NFS call secinfo %s\n", name
->name
);
7049 nfs4_state_protect(NFS_SERVER(dir
)->nfs_client
,
7050 NFS_SP4_MACH_CRED_SECINFO
, &clnt
, &msg
);
7052 status
= nfs4_call_sync(clnt
, NFS_SERVER(dir
), &msg
, &args
.seq_args
,
7054 dprintk("NFS reply secinfo: %d\n", status
);
7062 int nfs4_proc_secinfo(struct inode
*dir
, const struct qstr
*name
,
7063 struct nfs4_secinfo_flavors
*flavors
)
7065 struct nfs4_exception exception
= { };
7068 err
= -NFS4ERR_WRONGSEC
;
7070 /* try to use integrity protection with machine cred */
7071 if (_nfs4_is_integrity_protected(NFS_SERVER(dir
)->nfs_client
))
7072 err
= _nfs4_proc_secinfo(dir
, name
, flavors
, true);
7075 * if unable to use integrity protection, or SECINFO with
7076 * integrity protection returns NFS4ERR_WRONGSEC (which is
7077 * disallowed by spec, but exists in deployed servers) use
7078 * the current filesystem's rpc_client and the user cred.
7080 if (err
== -NFS4ERR_WRONGSEC
)
7081 err
= _nfs4_proc_secinfo(dir
, name
, flavors
, false);
7083 trace_nfs4_secinfo(dir
, name
, err
);
7084 err
= nfs4_handle_exception(NFS_SERVER(dir
), err
,
7086 } while (exception
.retry
);
7090 #ifdef CONFIG_NFS_V4_1
7092 * Check the exchange flags returned by the server for invalid flags, having
7093 * both PNFS and NON_PNFS flags set, and not having one of NON_PNFS, PNFS, or
7096 static int nfs4_check_cl_exchange_flags(u32 flags
)
7098 if (flags
& ~EXCHGID4_FLAG_MASK_R
)
7100 if ((flags
& EXCHGID4_FLAG_USE_PNFS_MDS
) &&
7101 (flags
& EXCHGID4_FLAG_USE_NON_PNFS
))
7103 if (!(flags
& (EXCHGID4_FLAG_MASK_PNFS
)))
7107 return -NFS4ERR_INVAL
;
7111 nfs41_same_server_scope(struct nfs41_server_scope
*a
,
7112 struct nfs41_server_scope
*b
)
7114 if (a
->server_scope_sz
!= b
->server_scope_sz
)
7116 return memcmp(a
->server_scope
, b
->server_scope
, a
->server_scope_sz
) == 0;
7120 nfs4_bind_one_conn_to_session_done(struct rpc_task
*task
, void *calldata
)
7124 static const struct rpc_call_ops nfs4_bind_one_conn_to_session_ops
= {
7125 .rpc_call_done
= &nfs4_bind_one_conn_to_session_done
,
7129 * nfs4_proc_bind_one_conn_to_session()
7131 * The 4.1 client currently uses the same TCP connection for the
7132 * fore and backchannel.
7135 int nfs4_proc_bind_one_conn_to_session(struct rpc_clnt
*clnt
,
7136 struct rpc_xprt
*xprt
,
7137 struct nfs_client
*clp
,
7138 struct rpc_cred
*cred
)
7141 struct nfs41_bind_conn_to_session_args args
= {
7143 .dir
= NFS4_CDFC4_FORE_OR_BOTH
,
7145 struct nfs41_bind_conn_to_session_res res
;
7146 struct rpc_message msg
= {
7148 &nfs4_procedures
[NFSPROC4_CLNT_BIND_CONN_TO_SESSION
],
7153 struct rpc_task_setup task_setup_data
= {
7156 .callback_ops
= &nfs4_bind_one_conn_to_session_ops
,
7157 .rpc_message
= &msg
,
7158 .flags
= RPC_TASK_TIMEOUT
,
7160 struct rpc_task
*task
;
7162 nfs4_copy_sessionid(&args
.sessionid
, &clp
->cl_session
->sess_id
);
7163 if (!(clp
->cl_session
->flags
& SESSION4_BACK_CHAN
))
7164 args
.dir
= NFS4_CDFC4_FORE
;
7166 /* Do not set the backchannel flag unless this is clnt->cl_xprt */
7167 if (xprt
!= rcu_access_pointer(clnt
->cl_xprt
))
7168 args
.dir
= NFS4_CDFC4_FORE
;
7170 task
= rpc_run_task(&task_setup_data
);
7171 if (!IS_ERR(task
)) {
7172 status
= task
->tk_status
;
7175 status
= PTR_ERR(task
);
7176 trace_nfs4_bind_conn_to_session(clp
, status
);
7178 if (memcmp(res
.sessionid
.data
,
7179 clp
->cl_session
->sess_id
.data
, NFS4_MAX_SESSIONID_LEN
)) {
7180 dprintk("NFS: %s: Session ID mismatch\n", __func__
);
7183 if ((res
.dir
& args
.dir
) != res
.dir
|| res
.dir
== 0) {
7184 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",
7198 struct rpc_bind_conn_calldata
{
7199 struct nfs_client
*clp
;
7200 struct rpc_cred
*cred
;
7204 nfs4_proc_bind_conn_to_session_callback(struct rpc_clnt
*clnt
,
7205 struct rpc_xprt
*xprt
,
7208 struct rpc_bind_conn_calldata
*p
= calldata
;
7210 return nfs4_proc_bind_one_conn_to_session(clnt
, xprt
, p
->clp
, p
->cred
);
7213 int nfs4_proc_bind_conn_to_session(struct nfs_client
*clp
, struct rpc_cred
*cred
)
7215 struct rpc_bind_conn_calldata data
= {
7219 return rpc_clnt_iterate_for_each_xprt(clp
->cl_rpcclient
,
7220 nfs4_proc_bind_conn_to_session_callback
, &data
);
7224 * Minimum set of SP4_MACH_CRED operations from RFC 5661 in the enforce map
7225 * and operations we'd like to see to enable certain features in the allow map
7227 static const struct nfs41_state_protection nfs4_sp4_mach_cred_request
= {
7228 .how
= SP4_MACH_CRED
,
7229 .enforce
.u
.words
= {
7230 [1] = 1 << (OP_BIND_CONN_TO_SESSION
- 32) |
7231 1 << (OP_EXCHANGE_ID
- 32) |
7232 1 << (OP_CREATE_SESSION
- 32) |
7233 1 << (OP_DESTROY_SESSION
- 32) |
7234 1 << (OP_DESTROY_CLIENTID
- 32)
7237 [0] = 1 << (OP_CLOSE
) |
7238 1 << (OP_OPEN_DOWNGRADE
) |
7240 1 << (OP_DELEGRETURN
) |
7242 [1] = 1 << (OP_SECINFO
- 32) |
7243 1 << (OP_SECINFO_NO_NAME
- 32) |
7244 1 << (OP_LAYOUTRETURN
- 32) |
7245 1 << (OP_TEST_STATEID
- 32) |
7246 1 << (OP_FREE_STATEID
- 32) |
7247 1 << (OP_WRITE
- 32)
7252 * Select the state protection mode for client `clp' given the server results
7253 * from exchange_id in `sp'.
7255 * Returns 0 on success, negative errno otherwise.
7257 static int nfs4_sp4_select_mode(struct nfs_client
*clp
,
7258 struct nfs41_state_protection
*sp
)
7260 static const u32 supported_enforce
[NFS4_OP_MAP_NUM_WORDS
] = {
7261 [1] = 1 << (OP_BIND_CONN_TO_SESSION
- 32) |
7262 1 << (OP_EXCHANGE_ID
- 32) |
7263 1 << (OP_CREATE_SESSION
- 32) |
7264 1 << (OP_DESTROY_SESSION
- 32) |
7265 1 << (OP_DESTROY_CLIENTID
- 32)
7269 if (sp
->how
== SP4_MACH_CRED
) {
7270 /* Print state protect result */
7271 dfprintk(MOUNT
, "Server SP4_MACH_CRED support:\n");
7272 for (i
= 0; i
<= LAST_NFS4_OP
; i
++) {
7273 if (test_bit(i
, sp
->enforce
.u
.longs
))
7274 dfprintk(MOUNT
, " enforce op %d\n", i
);
7275 if (test_bit(i
, sp
->allow
.u
.longs
))
7276 dfprintk(MOUNT
, " allow op %d\n", i
);
7279 /* make sure nothing is on enforce list that isn't supported */
7280 for (i
= 0; i
< NFS4_OP_MAP_NUM_WORDS
; i
++) {
7281 if (sp
->enforce
.u
.words
[i
] & ~supported_enforce
[i
]) {
7282 dfprintk(MOUNT
, "sp4_mach_cred: disabled\n");
7288 * Minimal mode - state operations are allowed to use machine
7289 * credential. Note this already happens by default, so the
7290 * client doesn't have to do anything more than the negotiation.
7292 * NOTE: we don't care if EXCHANGE_ID is in the list -
7293 * we're already using the machine cred for exchange_id
7294 * and will never use a different cred.
7296 if (test_bit(OP_BIND_CONN_TO_SESSION
, sp
->enforce
.u
.longs
) &&
7297 test_bit(OP_CREATE_SESSION
, sp
->enforce
.u
.longs
) &&
7298 test_bit(OP_DESTROY_SESSION
, sp
->enforce
.u
.longs
) &&
7299 test_bit(OP_DESTROY_CLIENTID
, sp
->enforce
.u
.longs
)) {
7300 dfprintk(MOUNT
, "sp4_mach_cred:\n");
7301 dfprintk(MOUNT
, " minimal mode enabled\n");
7302 set_bit(NFS_SP4_MACH_CRED_MINIMAL
, &clp
->cl_sp4_flags
);
7304 dfprintk(MOUNT
, "sp4_mach_cred: disabled\n");
7308 if (test_bit(OP_CLOSE
, sp
->allow
.u
.longs
) &&
7309 test_bit(OP_OPEN_DOWNGRADE
, sp
->allow
.u
.longs
) &&
7310 test_bit(OP_DELEGRETURN
, sp
->allow
.u
.longs
) &&
7311 test_bit(OP_LOCKU
, sp
->allow
.u
.longs
)) {
7312 dfprintk(MOUNT
, " cleanup mode enabled\n");
7313 set_bit(NFS_SP4_MACH_CRED_CLEANUP
, &clp
->cl_sp4_flags
);
7316 if (test_bit(OP_LAYOUTRETURN
, sp
->allow
.u
.longs
)) {
7317 dfprintk(MOUNT
, " pnfs cleanup mode enabled\n");
7318 set_bit(NFS_SP4_MACH_CRED_PNFS_CLEANUP
,
7319 &clp
->cl_sp4_flags
);
7322 if (test_bit(OP_SECINFO
, sp
->allow
.u
.longs
) &&
7323 test_bit(OP_SECINFO_NO_NAME
, sp
->allow
.u
.longs
)) {
7324 dfprintk(MOUNT
, " secinfo mode enabled\n");
7325 set_bit(NFS_SP4_MACH_CRED_SECINFO
, &clp
->cl_sp4_flags
);
7328 if (test_bit(OP_TEST_STATEID
, sp
->allow
.u
.longs
) &&
7329 test_bit(OP_FREE_STATEID
, sp
->allow
.u
.longs
)) {
7330 dfprintk(MOUNT
, " stateid mode enabled\n");
7331 set_bit(NFS_SP4_MACH_CRED_STATEID
, &clp
->cl_sp4_flags
);
7334 if (test_bit(OP_WRITE
, sp
->allow
.u
.longs
)) {
7335 dfprintk(MOUNT
, " write mode enabled\n");
7336 set_bit(NFS_SP4_MACH_CRED_WRITE
, &clp
->cl_sp4_flags
);
7339 if (test_bit(OP_COMMIT
, sp
->allow
.u
.longs
)) {
7340 dfprintk(MOUNT
, " commit mode enabled\n");
7341 set_bit(NFS_SP4_MACH_CRED_COMMIT
, &clp
->cl_sp4_flags
);
7348 struct nfs41_exchange_id_data
{
7349 struct nfs41_exchange_id_res res
;
7350 struct nfs41_exchange_id_args args
;
7351 struct rpc_xprt
*xprt
;
7355 static void nfs4_exchange_id_done(struct rpc_task
*task
, void *data
)
7357 struct nfs41_exchange_id_data
*cdata
=
7358 (struct nfs41_exchange_id_data
*)data
;
7359 struct nfs_client
*clp
= cdata
->args
.client
;
7360 int status
= task
->tk_status
;
7362 trace_nfs4_exchange_id(clp
, status
);
7365 status
= nfs4_check_cl_exchange_flags(cdata
->res
.flags
);
7367 if (cdata
->xprt
&& status
== 0) {
7368 status
= nfs4_detect_session_trunking(clp
, &cdata
->res
,
7374 status
= nfs4_sp4_select_mode(clp
, &cdata
->res
.state_protect
);
7377 clp
->cl_clientid
= cdata
->res
.clientid
;
7378 clp
->cl_exchange_flags
= cdata
->res
.flags
;
7379 /* Client ID is not confirmed */
7380 if (!(cdata
->res
.flags
& EXCHGID4_FLAG_CONFIRMED_R
)) {
7381 clear_bit(NFS4_SESSION_ESTABLISHED
,
7382 &clp
->cl_session
->session_state
);
7383 clp
->cl_seqid
= cdata
->res
.seqid
;
7386 kfree(clp
->cl_serverowner
);
7387 clp
->cl_serverowner
= cdata
->res
.server_owner
;
7388 cdata
->res
.server_owner
= NULL
;
7390 /* use the most recent implementation id */
7391 kfree(clp
->cl_implid
);
7392 clp
->cl_implid
= cdata
->res
.impl_id
;
7393 cdata
->res
.impl_id
= NULL
;
7395 if (clp
->cl_serverscope
!= NULL
&&
7396 !nfs41_same_server_scope(clp
->cl_serverscope
,
7397 cdata
->res
.server_scope
)) {
7398 dprintk("%s: server_scope mismatch detected\n",
7400 set_bit(NFS4CLNT_SERVER_SCOPE_MISMATCH
, &clp
->cl_state
);
7401 kfree(clp
->cl_serverscope
);
7402 clp
->cl_serverscope
= NULL
;
7405 if (clp
->cl_serverscope
== NULL
) {
7406 clp
->cl_serverscope
= cdata
->res
.server_scope
;
7407 cdata
->res
.server_scope
= NULL
;
7409 /* Save the EXCHANGE_ID verifier session trunk tests */
7410 memcpy(clp
->cl_confirm
.data
, cdata
->args
.verifier
->data
,
7411 sizeof(clp
->cl_confirm
.data
));
7414 cdata
->rpc_status
= status
;
7418 static void nfs4_exchange_id_release(void *data
)
7420 struct nfs41_exchange_id_data
*cdata
=
7421 (struct nfs41_exchange_id_data
*)data
;
7424 xprt_put(cdata
->xprt
);
7425 rpc_clnt_xprt_switch_put(cdata
->args
.client
->cl_rpcclient
);
7427 nfs_put_client(cdata
->args
.client
);
7428 kfree(cdata
->res
.impl_id
);
7429 kfree(cdata
->res
.server_scope
);
7430 kfree(cdata
->res
.server_owner
);
7434 static const struct rpc_call_ops nfs4_exchange_id_call_ops
= {
7435 .rpc_call_done
= nfs4_exchange_id_done
,
7436 .rpc_release
= nfs4_exchange_id_release
,
7440 * _nfs4_proc_exchange_id()
7442 * Wrapper for EXCHANGE_ID operation.
7444 static int _nfs4_proc_exchange_id(struct nfs_client
*clp
, struct rpc_cred
*cred
,
7445 u32 sp4_how
, struct rpc_xprt
*xprt
)
7447 nfs4_verifier verifier
;
7448 struct rpc_message msg
= {
7449 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_EXCHANGE_ID
],
7452 struct rpc_task_setup task_setup_data
= {
7453 .rpc_client
= clp
->cl_rpcclient
,
7454 .callback_ops
= &nfs4_exchange_id_call_ops
,
7455 .rpc_message
= &msg
,
7456 .flags
= RPC_TASK_ASYNC
| RPC_TASK_TIMEOUT
,
7458 struct nfs41_exchange_id_data
*calldata
;
7459 struct rpc_task
*task
;
7462 if (!atomic_inc_not_zero(&clp
->cl_count
))
7465 calldata
= kzalloc(sizeof(*calldata
), GFP_NOFS
);
7467 nfs_put_client(clp
);
7472 nfs4_init_boot_verifier(clp
, &verifier
);
7474 status
= nfs4_init_uniform_client_string(clp
);
7478 calldata
->res
.server_owner
= kzalloc(sizeof(struct nfs41_server_owner
),
7481 if (unlikely(calldata
->res
.server_owner
== NULL
))
7484 calldata
->res
.server_scope
= kzalloc(sizeof(struct nfs41_server_scope
),
7486 if (unlikely(calldata
->res
.server_scope
== NULL
))
7487 goto out_server_owner
;
7489 calldata
->res
.impl_id
= kzalloc(sizeof(struct nfs41_impl_id
), GFP_NOFS
);
7490 if (unlikely(calldata
->res
.impl_id
== NULL
))
7491 goto out_server_scope
;
7495 calldata
->args
.state_protect
.how
= SP4_NONE
;
7499 calldata
->args
.state_protect
= nfs4_sp4_mach_cred_request
;
7509 calldata
->xprt
= xprt
;
7510 task_setup_data
.rpc_xprt
= xprt
;
7511 task_setup_data
.flags
=
7512 RPC_TASK_SOFT
|RPC_TASK_SOFTCONN
|RPC_TASK_ASYNC
;
7513 calldata
->args
.verifier
= &clp
->cl_confirm
;
7515 calldata
->args
.verifier
= &verifier
;
7517 calldata
->args
.client
= clp
;
7518 #ifdef CONFIG_NFS_V4_1_MIGRATION
7519 calldata
->args
.flags
= EXCHGID4_FLAG_SUPP_MOVED_REFER
|
7520 EXCHGID4_FLAG_BIND_PRINC_STATEID
|
7521 EXCHGID4_FLAG_SUPP_MOVED_MIGR
,
7523 calldata
->args
.flags
= EXCHGID4_FLAG_SUPP_MOVED_REFER
|
7524 EXCHGID4_FLAG_BIND_PRINC_STATEID
,
7526 msg
.rpc_argp
= &calldata
->args
;
7527 msg
.rpc_resp
= &calldata
->res
;
7528 task_setup_data
.callback_data
= calldata
;
7530 task
= rpc_run_task(&task_setup_data
);
7532 return PTR_ERR(task
);
7535 status
= rpc_wait_for_completion_task(task
);
7537 status
= calldata
->rpc_status
;
7538 } else /* session trunking test */
7539 status
= calldata
->rpc_status
;
7546 kfree(calldata
->res
.impl_id
);
7548 kfree(calldata
->res
.server_scope
);
7550 kfree(calldata
->res
.server_owner
);
7553 nfs_put_client(clp
);
7558 * nfs4_proc_exchange_id()
7560 * Returns zero, a negative errno, or a negative NFS4ERR status code.
7562 * Since the clientid has expired, all compounds using sessions
7563 * associated with the stale clientid will be returning
7564 * NFS4ERR_BADSESSION in the sequence operation, and will therefore
7565 * be in some phase of session reset.
7567 * Will attempt to negotiate SP4_MACH_CRED if krb5i / krb5p auth is used.
7569 int nfs4_proc_exchange_id(struct nfs_client
*clp
, struct rpc_cred
*cred
)
7571 rpc_authflavor_t authflavor
= clp
->cl_rpcclient
->cl_auth
->au_flavor
;
7574 /* try SP4_MACH_CRED if krb5i/p */
7575 if (authflavor
== RPC_AUTH_GSS_KRB5I
||
7576 authflavor
== RPC_AUTH_GSS_KRB5P
) {
7577 status
= _nfs4_proc_exchange_id(clp
, cred
, SP4_MACH_CRED
, NULL
);
7583 return _nfs4_proc_exchange_id(clp
, cred
, SP4_NONE
, NULL
);
7587 * nfs4_test_session_trunk
7589 * This is an add_xprt_test() test function called from
7590 * rpc_clnt_setup_test_and_add_xprt.
7592 * The rpc_xprt_switch is referrenced by rpc_clnt_setup_test_and_add_xprt
7593 * and is dereferrenced in nfs4_exchange_id_release
7595 * Upon success, add the new transport to the rpc_clnt
7597 * @clnt: struct rpc_clnt to get new transport
7598 * @xprt: the rpc_xprt to test
7599 * @data: call data for _nfs4_proc_exchange_id.
7601 int nfs4_test_session_trunk(struct rpc_clnt
*clnt
, struct rpc_xprt
*xprt
,
7604 struct nfs4_add_xprt_data
*adata
= (struct nfs4_add_xprt_data
*)data
;
7607 dprintk("--> %s try %s\n", __func__
,
7608 xprt
->address_strings
[RPC_DISPLAY_ADDR
]);
7610 sp4_how
= (adata
->clp
->cl_sp4_flags
== 0 ? SP4_NONE
: SP4_MACH_CRED
);
7612 /* Test connection for session trunking. Async exchange_id call */
7613 return _nfs4_proc_exchange_id(adata
->clp
, adata
->cred
, sp4_how
, xprt
);
7615 EXPORT_SYMBOL_GPL(nfs4_test_session_trunk
);
7617 static int _nfs4_proc_destroy_clientid(struct nfs_client
*clp
,
7618 struct rpc_cred
*cred
)
7620 struct rpc_message msg
= {
7621 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_DESTROY_CLIENTID
],
7627 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
7628 trace_nfs4_destroy_clientid(clp
, status
);
7630 dprintk("NFS: Got error %d from the server %s on "
7631 "DESTROY_CLIENTID.", status
, clp
->cl_hostname
);
7635 static int nfs4_proc_destroy_clientid(struct nfs_client
*clp
,
7636 struct rpc_cred
*cred
)
7641 for (loop
= NFS4_MAX_LOOP_ON_RECOVER
; loop
!= 0; loop
--) {
7642 ret
= _nfs4_proc_destroy_clientid(clp
, cred
);
7644 case -NFS4ERR_DELAY
:
7645 case -NFS4ERR_CLIENTID_BUSY
:
7655 int nfs4_destroy_clientid(struct nfs_client
*clp
)
7657 struct rpc_cred
*cred
;
7660 if (clp
->cl_mvops
->minor_version
< 1)
7662 if (clp
->cl_exchange_flags
== 0)
7664 if (clp
->cl_preserve_clid
)
7666 cred
= nfs4_get_clid_cred(clp
);
7667 ret
= nfs4_proc_destroy_clientid(clp
, cred
);
7672 case -NFS4ERR_STALE_CLIENTID
:
7673 clp
->cl_exchange_flags
= 0;
7679 struct nfs4_get_lease_time_data
{
7680 struct nfs4_get_lease_time_args
*args
;
7681 struct nfs4_get_lease_time_res
*res
;
7682 struct nfs_client
*clp
;
7685 static void nfs4_get_lease_time_prepare(struct rpc_task
*task
,
7688 struct nfs4_get_lease_time_data
*data
=
7689 (struct nfs4_get_lease_time_data
*)calldata
;
7691 dprintk("--> %s\n", __func__
);
7692 /* just setup sequence, do not trigger session recovery
7693 since we're invoked within one */
7694 nfs4_setup_sequence(data
->clp
,
7695 &data
->args
->la_seq_args
,
7696 &data
->res
->lr_seq_res
,
7698 dprintk("<-- %s\n", __func__
);
7702 * Called from nfs4_state_manager thread for session setup, so don't recover
7703 * from sequence operation or clientid errors.
7705 static void nfs4_get_lease_time_done(struct rpc_task
*task
, void *calldata
)
7707 struct nfs4_get_lease_time_data
*data
=
7708 (struct nfs4_get_lease_time_data
*)calldata
;
7710 dprintk("--> %s\n", __func__
);
7711 if (!nfs41_sequence_done(task
, &data
->res
->lr_seq_res
))
7713 switch (task
->tk_status
) {
7714 case -NFS4ERR_DELAY
:
7715 case -NFS4ERR_GRACE
:
7716 dprintk("%s Retry: tk_status %d\n", __func__
, task
->tk_status
);
7717 rpc_delay(task
, NFS4_POLL_RETRY_MIN
);
7718 task
->tk_status
= 0;
7720 case -NFS4ERR_RETRY_UNCACHED_REP
:
7721 rpc_restart_call_prepare(task
);
7724 dprintk("<-- %s\n", __func__
);
7727 static const struct rpc_call_ops nfs4_get_lease_time_ops
= {
7728 .rpc_call_prepare
= nfs4_get_lease_time_prepare
,
7729 .rpc_call_done
= nfs4_get_lease_time_done
,
7732 int nfs4_proc_get_lease_time(struct nfs_client
*clp
, struct nfs_fsinfo
*fsinfo
)
7734 struct rpc_task
*task
;
7735 struct nfs4_get_lease_time_args args
;
7736 struct nfs4_get_lease_time_res res
= {
7737 .lr_fsinfo
= fsinfo
,
7739 struct nfs4_get_lease_time_data data
= {
7744 struct rpc_message msg
= {
7745 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GET_LEASE_TIME
],
7749 struct rpc_task_setup task_setup
= {
7750 .rpc_client
= clp
->cl_rpcclient
,
7751 .rpc_message
= &msg
,
7752 .callback_ops
= &nfs4_get_lease_time_ops
,
7753 .callback_data
= &data
,
7754 .flags
= RPC_TASK_TIMEOUT
,
7758 nfs4_init_sequence(&args
.la_seq_args
, &res
.lr_seq_res
, 0);
7759 nfs4_set_sequence_privileged(&args
.la_seq_args
);
7760 task
= rpc_run_task(&task_setup
);
7763 return PTR_ERR(task
);
7765 status
= task
->tk_status
;
7771 * Initialize the values to be used by the client in CREATE_SESSION
7772 * If nfs4_init_session set the fore channel request and response sizes,
7775 * Set the back channel max_resp_sz_cached to zero to force the client to
7776 * always set csa_cachethis to FALSE because the current implementation
7777 * of the back channel DRC only supports caching the CB_SEQUENCE operation.
7779 static void nfs4_init_channel_attrs(struct nfs41_create_session_args
*args
,
7780 struct rpc_clnt
*clnt
)
7782 unsigned int max_rqst_sz
, max_resp_sz
;
7783 unsigned int max_bc_payload
= rpc_max_bc_payload(clnt
);
7785 max_rqst_sz
= NFS_MAX_FILE_IO_SIZE
+ nfs41_maxwrite_overhead
;
7786 max_resp_sz
= NFS_MAX_FILE_IO_SIZE
+ nfs41_maxread_overhead
;
7788 /* Fore channel attributes */
7789 args
->fc_attrs
.max_rqst_sz
= max_rqst_sz
;
7790 args
->fc_attrs
.max_resp_sz
= max_resp_sz
;
7791 args
->fc_attrs
.max_ops
= NFS4_MAX_OPS
;
7792 args
->fc_attrs
.max_reqs
= max_session_slots
;
7794 dprintk("%s: Fore Channel : max_rqst_sz=%u max_resp_sz=%u "
7795 "max_ops=%u max_reqs=%u\n",
7797 args
->fc_attrs
.max_rqst_sz
, args
->fc_attrs
.max_resp_sz
,
7798 args
->fc_attrs
.max_ops
, args
->fc_attrs
.max_reqs
);
7800 /* Back channel attributes */
7801 args
->bc_attrs
.max_rqst_sz
= max_bc_payload
;
7802 args
->bc_attrs
.max_resp_sz
= max_bc_payload
;
7803 args
->bc_attrs
.max_resp_sz_cached
= 0;
7804 args
->bc_attrs
.max_ops
= NFS4_MAX_BACK_CHANNEL_OPS
;
7805 args
->bc_attrs
.max_reqs
= min_t(unsigned short, max_session_cb_slots
, 1);
7807 dprintk("%s: Back Channel : max_rqst_sz=%u max_resp_sz=%u "
7808 "max_resp_sz_cached=%u max_ops=%u max_reqs=%u\n",
7810 args
->bc_attrs
.max_rqst_sz
, args
->bc_attrs
.max_resp_sz
,
7811 args
->bc_attrs
.max_resp_sz_cached
, args
->bc_attrs
.max_ops
,
7812 args
->bc_attrs
.max_reqs
);
7815 static int nfs4_verify_fore_channel_attrs(struct nfs41_create_session_args
*args
,
7816 struct nfs41_create_session_res
*res
)
7818 struct nfs4_channel_attrs
*sent
= &args
->fc_attrs
;
7819 struct nfs4_channel_attrs
*rcvd
= &res
->fc_attrs
;
7821 if (rcvd
->max_resp_sz
> sent
->max_resp_sz
)
7824 * Our requested max_ops is the minimum we need; we're not
7825 * prepared to break up compounds into smaller pieces than that.
7826 * So, no point even trying to continue if the server won't
7829 if (rcvd
->max_ops
< sent
->max_ops
)
7831 if (rcvd
->max_reqs
== 0)
7833 if (rcvd
->max_reqs
> NFS4_MAX_SLOT_TABLE
)
7834 rcvd
->max_reqs
= NFS4_MAX_SLOT_TABLE
;
7838 static int nfs4_verify_back_channel_attrs(struct nfs41_create_session_args
*args
,
7839 struct nfs41_create_session_res
*res
)
7841 struct nfs4_channel_attrs
*sent
= &args
->bc_attrs
;
7842 struct nfs4_channel_attrs
*rcvd
= &res
->bc_attrs
;
7844 if (!(res
->flags
& SESSION4_BACK_CHAN
))
7846 if (rcvd
->max_rqst_sz
> sent
->max_rqst_sz
)
7848 if (rcvd
->max_resp_sz
< sent
->max_resp_sz
)
7850 if (rcvd
->max_resp_sz_cached
> sent
->max_resp_sz_cached
)
7852 if (rcvd
->max_ops
> sent
->max_ops
)
7854 if (rcvd
->max_reqs
> sent
->max_reqs
)
7860 static int nfs4_verify_channel_attrs(struct nfs41_create_session_args
*args
,
7861 struct nfs41_create_session_res
*res
)
7865 ret
= nfs4_verify_fore_channel_attrs(args
, res
);
7868 return nfs4_verify_back_channel_attrs(args
, res
);
7871 static void nfs4_update_session(struct nfs4_session
*session
,
7872 struct nfs41_create_session_res
*res
)
7874 nfs4_copy_sessionid(&session
->sess_id
, &res
->sessionid
);
7875 /* Mark client id and session as being confirmed */
7876 session
->clp
->cl_exchange_flags
|= EXCHGID4_FLAG_CONFIRMED_R
;
7877 set_bit(NFS4_SESSION_ESTABLISHED
, &session
->session_state
);
7878 session
->flags
= res
->flags
;
7879 memcpy(&session
->fc_attrs
, &res
->fc_attrs
, sizeof(session
->fc_attrs
));
7880 if (res
->flags
& SESSION4_BACK_CHAN
)
7881 memcpy(&session
->bc_attrs
, &res
->bc_attrs
,
7882 sizeof(session
->bc_attrs
));
7885 static int _nfs4_proc_create_session(struct nfs_client
*clp
,
7886 struct rpc_cred
*cred
)
7888 struct nfs4_session
*session
= clp
->cl_session
;
7889 struct nfs41_create_session_args args
= {
7891 .clientid
= clp
->cl_clientid
,
7892 .seqid
= clp
->cl_seqid
,
7893 .cb_program
= NFS4_CALLBACK
,
7895 struct nfs41_create_session_res res
;
7897 struct rpc_message msg
= {
7898 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_CREATE_SESSION
],
7905 nfs4_init_channel_attrs(&args
, clp
->cl_rpcclient
);
7906 args
.flags
= (SESSION4_PERSIST
| SESSION4_BACK_CHAN
);
7908 status
= rpc_call_sync(session
->clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
7909 trace_nfs4_create_session(clp
, status
);
7912 case -NFS4ERR_STALE_CLIENTID
:
7913 case -NFS4ERR_DELAY
:
7922 /* Verify the session's negotiated channel_attrs values */
7923 status
= nfs4_verify_channel_attrs(&args
, &res
);
7924 /* Increment the clientid slot sequence id */
7927 nfs4_update_session(session
, &res
);
7934 * Issues a CREATE_SESSION operation to the server.
7935 * It is the responsibility of the caller to verify the session is
7936 * expired before calling this routine.
7938 int nfs4_proc_create_session(struct nfs_client
*clp
, struct rpc_cred
*cred
)
7942 struct nfs4_session
*session
= clp
->cl_session
;
7944 dprintk("--> %s clp=%p session=%p\n", __func__
, clp
, session
);
7946 status
= _nfs4_proc_create_session(clp
, cred
);
7950 /* Init or reset the session slot tables */
7951 status
= nfs4_setup_session_slot_tables(session
);
7952 dprintk("slot table setup returned %d\n", status
);
7956 ptr
= (unsigned *)&session
->sess_id
.data
[0];
7957 dprintk("%s client>seqid %d sessionid %u:%u:%u:%u\n", __func__
,
7958 clp
->cl_seqid
, ptr
[0], ptr
[1], ptr
[2], ptr
[3]);
7960 dprintk("<-- %s\n", __func__
);
7965 * Issue the over-the-wire RPC DESTROY_SESSION.
7966 * The caller must serialize access to this routine.
7968 int nfs4_proc_destroy_session(struct nfs4_session
*session
,
7969 struct rpc_cred
*cred
)
7971 struct rpc_message msg
= {
7972 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_DESTROY_SESSION
],
7973 .rpc_argp
= session
,
7978 dprintk("--> nfs4_proc_destroy_session\n");
7980 /* session is still being setup */
7981 if (!test_and_clear_bit(NFS4_SESSION_ESTABLISHED
, &session
->session_state
))
7984 status
= rpc_call_sync(session
->clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
7985 trace_nfs4_destroy_session(session
->clp
, status
);
7988 dprintk("NFS: Got error %d from the server on DESTROY_SESSION. "
7989 "Session has been destroyed regardless...\n", status
);
7991 dprintk("<-- nfs4_proc_destroy_session\n");
7996 * Renew the cl_session lease.
7998 struct nfs4_sequence_data
{
7999 struct nfs_client
*clp
;
8000 struct nfs4_sequence_args args
;
8001 struct nfs4_sequence_res res
;
8004 static void nfs41_sequence_release(void *data
)
8006 struct nfs4_sequence_data
*calldata
= data
;
8007 struct nfs_client
*clp
= calldata
->clp
;
8009 if (atomic_read(&clp
->cl_count
) > 1)
8010 nfs4_schedule_state_renewal(clp
);
8011 nfs_put_client(clp
);
8015 static int nfs41_sequence_handle_errors(struct rpc_task
*task
, struct nfs_client
*clp
)
8017 switch(task
->tk_status
) {
8018 case -NFS4ERR_DELAY
:
8019 rpc_delay(task
, NFS4_POLL_RETRY_MAX
);
8022 nfs4_schedule_lease_recovery(clp
);
8027 static void nfs41_sequence_call_done(struct rpc_task
*task
, void *data
)
8029 struct nfs4_sequence_data
*calldata
= data
;
8030 struct nfs_client
*clp
= calldata
->clp
;
8032 if (!nfs41_sequence_done(task
, task
->tk_msg
.rpc_resp
))
8035 trace_nfs4_sequence(clp
, task
->tk_status
);
8036 if (task
->tk_status
< 0) {
8037 dprintk("%s ERROR %d\n", __func__
, task
->tk_status
);
8038 if (atomic_read(&clp
->cl_count
) == 1)
8041 if (nfs41_sequence_handle_errors(task
, clp
) == -EAGAIN
) {
8042 rpc_restart_call_prepare(task
);
8046 dprintk("%s rpc_cred %p\n", __func__
, task
->tk_msg
.rpc_cred
);
8048 dprintk("<-- %s\n", __func__
);
8051 static void nfs41_sequence_prepare(struct rpc_task
*task
, void *data
)
8053 struct nfs4_sequence_data
*calldata
= data
;
8054 struct nfs_client
*clp
= calldata
->clp
;
8055 struct nfs4_sequence_args
*args
;
8056 struct nfs4_sequence_res
*res
;
8058 args
= task
->tk_msg
.rpc_argp
;
8059 res
= task
->tk_msg
.rpc_resp
;
8061 nfs4_setup_sequence(clp
, args
, res
, task
);
8064 static const struct rpc_call_ops nfs41_sequence_ops
= {
8065 .rpc_call_done
= nfs41_sequence_call_done
,
8066 .rpc_call_prepare
= nfs41_sequence_prepare
,
8067 .rpc_release
= nfs41_sequence_release
,
8070 static struct rpc_task
*_nfs41_proc_sequence(struct nfs_client
*clp
,
8071 struct rpc_cred
*cred
,
8074 struct nfs4_sequence_data
*calldata
;
8075 struct rpc_message msg
= {
8076 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SEQUENCE
],
8079 struct rpc_task_setup task_setup_data
= {
8080 .rpc_client
= clp
->cl_rpcclient
,
8081 .rpc_message
= &msg
,
8082 .callback_ops
= &nfs41_sequence_ops
,
8083 .flags
= RPC_TASK_ASYNC
| RPC_TASK_TIMEOUT
,
8086 if (!atomic_inc_not_zero(&clp
->cl_count
))
8087 return ERR_PTR(-EIO
);
8088 calldata
= kzalloc(sizeof(*calldata
), GFP_NOFS
);
8089 if (calldata
== NULL
) {
8090 nfs_put_client(clp
);
8091 return ERR_PTR(-ENOMEM
);
8093 nfs4_init_sequence(&calldata
->args
, &calldata
->res
, 0);
8095 nfs4_set_sequence_privileged(&calldata
->args
);
8096 msg
.rpc_argp
= &calldata
->args
;
8097 msg
.rpc_resp
= &calldata
->res
;
8098 calldata
->clp
= clp
;
8099 task_setup_data
.callback_data
= calldata
;
8101 return rpc_run_task(&task_setup_data
);
8104 static int nfs41_proc_async_sequence(struct nfs_client
*clp
, struct rpc_cred
*cred
, unsigned renew_flags
)
8106 struct rpc_task
*task
;
8109 if ((renew_flags
& NFS4_RENEW_TIMEOUT
) == 0)
8111 task
= _nfs41_proc_sequence(clp
, cred
, false);
8113 ret
= PTR_ERR(task
);
8115 rpc_put_task_async(task
);
8116 dprintk("<-- %s status=%d\n", __func__
, ret
);
8120 static int nfs4_proc_sequence(struct nfs_client
*clp
, struct rpc_cred
*cred
)
8122 struct rpc_task
*task
;
8125 task
= _nfs41_proc_sequence(clp
, cred
, true);
8127 ret
= PTR_ERR(task
);
8130 ret
= rpc_wait_for_completion_task(task
);
8132 ret
= task
->tk_status
;
8135 dprintk("<-- %s status=%d\n", __func__
, ret
);
8139 struct nfs4_reclaim_complete_data
{
8140 struct nfs_client
*clp
;
8141 struct nfs41_reclaim_complete_args arg
;
8142 struct nfs41_reclaim_complete_res res
;
8145 static void nfs4_reclaim_complete_prepare(struct rpc_task
*task
, void *data
)
8147 struct nfs4_reclaim_complete_data
*calldata
= data
;
8149 nfs4_setup_sequence(calldata
->clp
,
8150 &calldata
->arg
.seq_args
,
8151 &calldata
->res
.seq_res
,
8155 static int nfs41_reclaim_complete_handle_errors(struct rpc_task
*task
, struct nfs_client
*clp
)
8157 switch(task
->tk_status
) {
8159 case -NFS4ERR_COMPLETE_ALREADY
:
8160 case -NFS4ERR_WRONG_CRED
: /* What to do here? */
8162 case -NFS4ERR_DELAY
:
8163 rpc_delay(task
, NFS4_POLL_RETRY_MAX
);
8165 case -NFS4ERR_RETRY_UNCACHED_REP
:
8167 case -NFS4ERR_BADSESSION
:
8168 case -NFS4ERR_DEADSESSION
:
8169 case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION
:
8170 nfs4_schedule_session_recovery(clp
->cl_session
,
8174 nfs4_schedule_lease_recovery(clp
);
8179 static void nfs4_reclaim_complete_done(struct rpc_task
*task
, void *data
)
8181 struct nfs4_reclaim_complete_data
*calldata
= data
;
8182 struct nfs_client
*clp
= calldata
->clp
;
8183 struct nfs4_sequence_res
*res
= &calldata
->res
.seq_res
;
8185 dprintk("--> %s\n", __func__
);
8186 if (!nfs41_sequence_done(task
, res
))
8189 trace_nfs4_reclaim_complete(clp
, task
->tk_status
);
8190 if (nfs41_reclaim_complete_handle_errors(task
, clp
) == -EAGAIN
) {
8191 rpc_restart_call_prepare(task
);
8194 dprintk("<-- %s\n", __func__
);
8197 static void nfs4_free_reclaim_complete_data(void *data
)
8199 struct nfs4_reclaim_complete_data
*calldata
= data
;
8204 static const struct rpc_call_ops nfs4_reclaim_complete_call_ops
= {
8205 .rpc_call_prepare
= nfs4_reclaim_complete_prepare
,
8206 .rpc_call_done
= nfs4_reclaim_complete_done
,
8207 .rpc_release
= nfs4_free_reclaim_complete_data
,
8211 * Issue a global reclaim complete.
8213 static int nfs41_proc_reclaim_complete(struct nfs_client
*clp
,
8214 struct rpc_cred
*cred
)
8216 struct nfs4_reclaim_complete_data
*calldata
;
8217 struct rpc_task
*task
;
8218 struct rpc_message msg
= {
8219 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RECLAIM_COMPLETE
],
8222 struct rpc_task_setup task_setup_data
= {
8223 .rpc_client
= clp
->cl_rpcclient
,
8224 .rpc_message
= &msg
,
8225 .callback_ops
= &nfs4_reclaim_complete_call_ops
,
8226 .flags
= RPC_TASK_ASYNC
,
8228 int status
= -ENOMEM
;
8230 dprintk("--> %s\n", __func__
);
8231 calldata
= kzalloc(sizeof(*calldata
), GFP_NOFS
);
8232 if (calldata
== NULL
)
8234 calldata
->clp
= clp
;
8235 calldata
->arg
.one_fs
= 0;
8237 nfs4_init_sequence(&calldata
->arg
.seq_args
, &calldata
->res
.seq_res
, 0);
8238 nfs4_set_sequence_privileged(&calldata
->arg
.seq_args
);
8239 msg
.rpc_argp
= &calldata
->arg
;
8240 msg
.rpc_resp
= &calldata
->res
;
8241 task_setup_data
.callback_data
= calldata
;
8242 task
= rpc_run_task(&task_setup_data
);
8244 status
= PTR_ERR(task
);
8247 status
= rpc_wait_for_completion_task(task
);
8249 status
= task
->tk_status
;
8252 dprintk("<-- %s status=%d\n", __func__
, status
);
8257 nfs4_layoutget_prepare(struct rpc_task
*task
, void *calldata
)
8259 struct nfs4_layoutget
*lgp
= calldata
;
8260 struct nfs_server
*server
= NFS_SERVER(lgp
->args
.inode
);
8262 dprintk("--> %s\n", __func__
);
8263 nfs4_setup_sequence(server
->nfs_client
, &lgp
->args
.seq_args
,
8264 &lgp
->res
.seq_res
, task
);
8265 dprintk("<-- %s\n", __func__
);
8268 static void nfs4_layoutget_done(struct rpc_task
*task
, void *calldata
)
8270 struct nfs4_layoutget
*lgp
= calldata
;
8272 dprintk("--> %s\n", __func__
);
8273 nfs41_sequence_process(task
, &lgp
->res
.seq_res
);
8274 dprintk("<-- %s\n", __func__
);
8278 nfs4_layoutget_handle_exception(struct rpc_task
*task
,
8279 struct nfs4_layoutget
*lgp
, struct nfs4_exception
*exception
)
8281 struct inode
*inode
= lgp
->args
.inode
;
8282 struct nfs_server
*server
= NFS_SERVER(inode
);
8283 struct pnfs_layout_hdr
*lo
;
8284 int nfs4err
= task
->tk_status
;
8285 int err
, status
= 0;
8288 dprintk("--> %s tk_status => %d\n", __func__
, -task
->tk_status
);
8295 * NFS4ERR_LAYOUTUNAVAILABLE means we are not supposed to use pnfs
8296 * on the file. set tk_status to -ENODATA to tell upper layer to
8299 case -NFS4ERR_LAYOUTUNAVAILABLE
:
8303 * NFS4ERR_BADLAYOUT means the MDS cannot return a layout of
8304 * length lgp->args.minlength != 0 (see RFC5661 section 18.43.3).
8306 case -NFS4ERR_BADLAYOUT
:
8307 status
= -EOVERFLOW
;
8310 * NFS4ERR_LAYOUTTRYLATER is a conflict with another client
8311 * (or clients) writing to the same RAID stripe except when
8312 * the minlength argument is 0 (see RFC5661 section 18.43.3).
8314 * Treat it like we would RECALLCONFLICT -- we retry for a little
8315 * while, and then eventually give up.
8317 case -NFS4ERR_LAYOUTTRYLATER
:
8318 if (lgp
->args
.minlength
== 0) {
8319 status
= -EOVERFLOW
;
8324 case -NFS4ERR_RECALLCONFLICT
:
8325 status
= -ERECALLCONFLICT
;
8327 case -NFS4ERR_DELEG_REVOKED
:
8328 case -NFS4ERR_ADMIN_REVOKED
:
8329 case -NFS4ERR_EXPIRED
:
8330 case -NFS4ERR_BAD_STATEID
:
8331 exception
->timeout
= 0;
8332 spin_lock(&inode
->i_lock
);
8333 lo
= NFS_I(inode
)->layout
;
8334 /* If the open stateid was bad, then recover it. */
8335 if (!lo
|| test_bit(NFS_LAYOUT_INVALID_STID
, &lo
->plh_flags
) ||
8336 nfs4_stateid_match_other(&lgp
->args
.stateid
,
8337 &lgp
->args
.ctx
->state
->stateid
)) {
8338 spin_unlock(&inode
->i_lock
);
8339 exception
->state
= lgp
->args
.ctx
->state
;
8340 exception
->stateid
= &lgp
->args
.stateid
;
8345 * Mark the bad layout state as invalid, then retry
8347 pnfs_mark_layout_stateid_invalid(lo
, &head
);
8348 spin_unlock(&inode
->i_lock
);
8349 nfs_commit_inode(inode
, 0);
8350 pnfs_free_lseg_list(&head
);
8355 nfs4_sequence_free_slot(&lgp
->res
.seq_res
);
8356 err
= nfs4_handle_exception(server
, nfs4err
, exception
);
8358 if (exception
->retry
)
8364 dprintk("<-- %s\n", __func__
);
8368 static size_t max_response_pages(struct nfs_server
*server
)
8370 u32 max_resp_sz
= server
->nfs_client
->cl_session
->fc_attrs
.max_resp_sz
;
8371 return nfs_page_array_len(0, max_resp_sz
);
8374 static void nfs4_free_pages(struct page
**pages
, size_t size
)
8381 for (i
= 0; i
< size
; i
++) {
8384 __free_page(pages
[i
]);
8389 static struct page
**nfs4_alloc_pages(size_t size
, gfp_t gfp_flags
)
8391 struct page
**pages
;
8394 pages
= kcalloc(size
, sizeof(struct page
*), gfp_flags
);
8396 dprintk("%s: can't alloc array of %zu pages\n", __func__
, size
);
8400 for (i
= 0; i
< size
; i
++) {
8401 pages
[i
] = alloc_page(gfp_flags
);
8403 dprintk("%s: failed to allocate page\n", __func__
);
8404 nfs4_free_pages(pages
, size
);
8412 static void nfs4_layoutget_release(void *calldata
)
8414 struct nfs4_layoutget
*lgp
= calldata
;
8415 struct inode
*inode
= lgp
->args
.inode
;
8416 struct nfs_server
*server
= NFS_SERVER(inode
);
8417 size_t max_pages
= max_response_pages(server
);
8419 dprintk("--> %s\n", __func__
);
8420 nfs4_sequence_free_slot(&lgp
->res
.seq_res
);
8421 nfs4_free_pages(lgp
->args
.layout
.pages
, max_pages
);
8422 pnfs_put_layout_hdr(NFS_I(inode
)->layout
);
8423 put_nfs_open_context(lgp
->args
.ctx
);
8425 dprintk("<-- %s\n", __func__
);
8428 static const struct rpc_call_ops nfs4_layoutget_call_ops
= {
8429 .rpc_call_prepare
= nfs4_layoutget_prepare
,
8430 .rpc_call_done
= nfs4_layoutget_done
,
8431 .rpc_release
= nfs4_layoutget_release
,
8434 struct pnfs_layout_segment
*
8435 nfs4_proc_layoutget(struct nfs4_layoutget
*lgp
, long *timeout
, gfp_t gfp_flags
)
8437 struct inode
*inode
= lgp
->args
.inode
;
8438 struct nfs_server
*server
= NFS_SERVER(inode
);
8439 size_t max_pages
= max_response_pages(server
);
8440 struct rpc_task
*task
;
8441 struct rpc_message msg
= {
8442 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LAYOUTGET
],
8443 .rpc_argp
= &lgp
->args
,
8444 .rpc_resp
= &lgp
->res
,
8445 .rpc_cred
= lgp
->cred
,
8447 struct rpc_task_setup task_setup_data
= {
8448 .rpc_client
= server
->client
,
8449 .rpc_message
= &msg
,
8450 .callback_ops
= &nfs4_layoutget_call_ops
,
8451 .callback_data
= lgp
,
8452 .flags
= RPC_TASK_ASYNC
,
8454 struct pnfs_layout_segment
*lseg
= NULL
;
8455 struct nfs4_exception exception
= {
8457 .timeout
= *timeout
,
8461 dprintk("--> %s\n", __func__
);
8463 /* nfs4_layoutget_release calls pnfs_put_layout_hdr */
8464 pnfs_get_layout_hdr(NFS_I(inode
)->layout
);
8466 lgp
->args
.layout
.pages
= nfs4_alloc_pages(max_pages
, gfp_flags
);
8467 if (!lgp
->args
.layout
.pages
) {
8468 nfs4_layoutget_release(lgp
);
8469 return ERR_PTR(-ENOMEM
);
8471 lgp
->args
.layout
.pglen
= max_pages
* PAGE_SIZE
;
8473 lgp
->res
.layoutp
= &lgp
->args
.layout
;
8474 lgp
->res
.seq_res
.sr_slot
= NULL
;
8475 nfs4_init_sequence(&lgp
->args
.seq_args
, &lgp
->res
.seq_res
, 0);
8477 task
= rpc_run_task(&task_setup_data
);
8479 return ERR_CAST(task
);
8480 status
= rpc_wait_for_completion_task(task
);
8482 status
= nfs4_layoutget_handle_exception(task
, lgp
, &exception
);
8483 *timeout
= exception
.timeout
;
8486 trace_nfs4_layoutget(lgp
->args
.ctx
,
8492 /* if layoutp->len is 0, nfs4_layoutget_prepare called rpc_exit */
8493 if (status
== 0 && lgp
->res
.layoutp
->len
)
8494 lseg
= pnfs_layout_process(lgp
);
8496 dprintk("<-- %s status=%d\n", __func__
, status
);
8498 return ERR_PTR(status
);
8503 nfs4_layoutreturn_prepare(struct rpc_task
*task
, void *calldata
)
8505 struct nfs4_layoutreturn
*lrp
= calldata
;
8507 dprintk("--> %s\n", __func__
);
8508 nfs4_setup_sequence(lrp
->clp
,
8509 &lrp
->args
.seq_args
,
8514 static void nfs4_layoutreturn_done(struct rpc_task
*task
, void *calldata
)
8516 struct nfs4_layoutreturn
*lrp
= calldata
;
8517 struct nfs_server
*server
;
8519 dprintk("--> %s\n", __func__
);
8521 if (!nfs41_sequence_process(task
, &lrp
->res
.seq_res
))
8524 server
= NFS_SERVER(lrp
->args
.inode
);
8525 switch (task
->tk_status
) {
8527 task
->tk_status
= 0;
8530 case -NFS4ERR_DELAY
:
8531 if (nfs4_async_handle_error(task
, server
, NULL
, NULL
) != -EAGAIN
)
8533 nfs4_sequence_free_slot(&lrp
->res
.seq_res
);
8534 rpc_restart_call_prepare(task
);
8537 dprintk("<-- %s\n", __func__
);
8540 static void nfs4_layoutreturn_release(void *calldata
)
8542 struct nfs4_layoutreturn
*lrp
= calldata
;
8543 struct pnfs_layout_hdr
*lo
= lrp
->args
.layout
;
8545 dprintk("--> %s\n", __func__
);
8546 pnfs_layoutreturn_free_lsegs(lo
, &lrp
->args
.stateid
, &lrp
->args
.range
,
8547 lrp
->res
.lrs_present
? &lrp
->res
.stateid
: NULL
);
8548 nfs4_sequence_free_slot(&lrp
->res
.seq_res
);
8549 if (lrp
->ld_private
.ops
&& lrp
->ld_private
.ops
->free
)
8550 lrp
->ld_private
.ops
->free(&lrp
->ld_private
);
8551 pnfs_put_layout_hdr(lrp
->args
.layout
);
8552 nfs_iput_and_deactive(lrp
->inode
);
8554 dprintk("<-- %s\n", __func__
);
8557 static const struct rpc_call_ops nfs4_layoutreturn_call_ops
= {
8558 .rpc_call_prepare
= nfs4_layoutreturn_prepare
,
8559 .rpc_call_done
= nfs4_layoutreturn_done
,
8560 .rpc_release
= nfs4_layoutreturn_release
,
8563 int nfs4_proc_layoutreturn(struct nfs4_layoutreturn
*lrp
, bool sync
)
8565 struct rpc_task
*task
;
8566 struct rpc_message msg
= {
8567 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LAYOUTRETURN
],
8568 .rpc_argp
= &lrp
->args
,
8569 .rpc_resp
= &lrp
->res
,
8570 .rpc_cred
= lrp
->cred
,
8572 struct rpc_task_setup task_setup_data
= {
8573 .rpc_client
= NFS_SERVER(lrp
->args
.inode
)->client
,
8574 .rpc_message
= &msg
,
8575 .callback_ops
= &nfs4_layoutreturn_call_ops
,
8576 .callback_data
= lrp
,
8580 nfs4_state_protect(NFS_SERVER(lrp
->args
.inode
)->nfs_client
,
8581 NFS_SP4_MACH_CRED_PNFS_CLEANUP
,
8582 &task_setup_data
.rpc_client
, &msg
);
8584 dprintk("--> %s\n", __func__
);
8586 lrp
->inode
= nfs_igrab_and_active(lrp
->args
.inode
);
8588 nfs4_layoutreturn_release(lrp
);
8591 task_setup_data
.flags
|= RPC_TASK_ASYNC
;
8593 nfs4_init_sequence(&lrp
->args
.seq_args
, &lrp
->res
.seq_res
, 1);
8594 task
= rpc_run_task(&task_setup_data
);
8596 return PTR_ERR(task
);
8598 status
= task
->tk_status
;
8599 trace_nfs4_layoutreturn(lrp
->args
.inode
, &lrp
->args
.stateid
, status
);
8600 dprintk("<-- %s status=%d\n", __func__
, status
);
8606 _nfs4_proc_getdeviceinfo(struct nfs_server
*server
,
8607 struct pnfs_device
*pdev
,
8608 struct rpc_cred
*cred
)
8610 struct nfs4_getdeviceinfo_args args
= {
8612 .notify_types
= NOTIFY_DEVICEID4_CHANGE
|
8613 NOTIFY_DEVICEID4_DELETE
,
8615 struct nfs4_getdeviceinfo_res res
= {
8618 struct rpc_message msg
= {
8619 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GETDEVICEINFO
],
8626 dprintk("--> %s\n", __func__
);
8627 status
= nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
8628 if (res
.notification
& ~args
.notify_types
)
8629 dprintk("%s: unsupported notification\n", __func__
);
8630 if (res
.notification
!= args
.notify_types
)
8633 dprintk("<-- %s status=%d\n", __func__
, status
);
8638 int nfs4_proc_getdeviceinfo(struct nfs_server
*server
,
8639 struct pnfs_device
*pdev
,
8640 struct rpc_cred
*cred
)
8642 struct nfs4_exception exception
= { };
8646 err
= nfs4_handle_exception(server
,
8647 _nfs4_proc_getdeviceinfo(server
, pdev
, cred
),
8649 } while (exception
.retry
);
8652 EXPORT_SYMBOL_GPL(nfs4_proc_getdeviceinfo
);
8654 static void nfs4_layoutcommit_prepare(struct rpc_task
*task
, void *calldata
)
8656 struct nfs4_layoutcommit_data
*data
= calldata
;
8657 struct nfs_server
*server
= NFS_SERVER(data
->args
.inode
);
8659 nfs4_setup_sequence(server
->nfs_client
,
8660 &data
->args
.seq_args
,
8666 nfs4_layoutcommit_done(struct rpc_task
*task
, void *calldata
)
8668 struct nfs4_layoutcommit_data
*data
= calldata
;
8669 struct nfs_server
*server
= NFS_SERVER(data
->args
.inode
);
8671 if (!nfs41_sequence_done(task
, &data
->res
.seq_res
))
8674 switch (task
->tk_status
) { /* Just ignore these failures */
8675 case -NFS4ERR_DELEG_REVOKED
: /* layout was recalled */
8676 case -NFS4ERR_BADIOMODE
: /* no IOMODE_RW layout for range */
8677 case -NFS4ERR_BADLAYOUT
: /* no layout */
8678 case -NFS4ERR_GRACE
: /* loca_recalim always false */
8679 task
->tk_status
= 0;
8683 if (nfs4_async_handle_error(task
, server
, NULL
, NULL
) == -EAGAIN
) {
8684 rpc_restart_call_prepare(task
);
8690 static void nfs4_layoutcommit_release(void *calldata
)
8692 struct nfs4_layoutcommit_data
*data
= calldata
;
8694 pnfs_cleanup_layoutcommit(data
);
8695 nfs_post_op_update_inode_force_wcc(data
->args
.inode
,
8697 put_rpccred(data
->cred
);
8698 nfs_iput_and_deactive(data
->inode
);
8702 static const struct rpc_call_ops nfs4_layoutcommit_ops
= {
8703 .rpc_call_prepare
= nfs4_layoutcommit_prepare
,
8704 .rpc_call_done
= nfs4_layoutcommit_done
,
8705 .rpc_release
= nfs4_layoutcommit_release
,
8709 nfs4_proc_layoutcommit(struct nfs4_layoutcommit_data
*data
, bool sync
)
8711 struct rpc_message msg
= {
8712 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LAYOUTCOMMIT
],
8713 .rpc_argp
= &data
->args
,
8714 .rpc_resp
= &data
->res
,
8715 .rpc_cred
= data
->cred
,
8717 struct rpc_task_setup task_setup_data
= {
8718 .task
= &data
->task
,
8719 .rpc_client
= NFS_CLIENT(data
->args
.inode
),
8720 .rpc_message
= &msg
,
8721 .callback_ops
= &nfs4_layoutcommit_ops
,
8722 .callback_data
= data
,
8724 struct rpc_task
*task
;
8727 dprintk("NFS: initiating layoutcommit call. sync %d "
8728 "lbw: %llu inode %lu\n", sync
,
8729 data
->args
.lastbytewritten
,
8730 data
->args
.inode
->i_ino
);
8733 data
->inode
= nfs_igrab_and_active(data
->args
.inode
);
8734 if (data
->inode
== NULL
) {
8735 nfs4_layoutcommit_release(data
);
8738 task_setup_data
.flags
= RPC_TASK_ASYNC
;
8740 nfs4_init_sequence(&data
->args
.seq_args
, &data
->res
.seq_res
, 1);
8741 task
= rpc_run_task(&task_setup_data
);
8743 return PTR_ERR(task
);
8745 status
= task
->tk_status
;
8746 trace_nfs4_layoutcommit(data
->args
.inode
, &data
->args
.stateid
, status
);
8747 dprintk("%s: status %d\n", __func__
, status
);
8753 * Use the state managment nfs_client cl_rpcclient, which uses krb5i (if
8754 * possible) as per RFC3530bis and RFC5661 Security Considerations sections
8757 _nfs41_proc_secinfo_no_name(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
8758 struct nfs_fsinfo
*info
,
8759 struct nfs4_secinfo_flavors
*flavors
, bool use_integrity
)
8761 struct nfs41_secinfo_no_name_args args
= {
8762 .style
= SECINFO_STYLE_CURRENT_FH
,
8764 struct nfs4_secinfo_res res
= {
8767 struct rpc_message msg
= {
8768 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SECINFO_NO_NAME
],
8772 struct rpc_clnt
*clnt
= server
->client
;
8773 struct rpc_cred
*cred
= NULL
;
8776 if (use_integrity
) {
8777 clnt
= server
->nfs_client
->cl_rpcclient
;
8778 cred
= nfs4_get_clid_cred(server
->nfs_client
);
8779 msg
.rpc_cred
= cred
;
8782 dprintk("--> %s\n", __func__
);
8783 status
= nfs4_call_sync(clnt
, server
, &msg
, &args
.seq_args
,
8785 dprintk("<-- %s status=%d\n", __func__
, status
);
8794 nfs41_proc_secinfo_no_name(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
8795 struct nfs_fsinfo
*info
, struct nfs4_secinfo_flavors
*flavors
)
8797 struct nfs4_exception exception
= { };
8800 /* first try using integrity protection */
8801 err
= -NFS4ERR_WRONGSEC
;
8803 /* try to use integrity protection with machine cred */
8804 if (_nfs4_is_integrity_protected(server
->nfs_client
))
8805 err
= _nfs41_proc_secinfo_no_name(server
, fhandle
, info
,
8809 * if unable to use integrity protection, or SECINFO with
8810 * integrity protection returns NFS4ERR_WRONGSEC (which is
8811 * disallowed by spec, but exists in deployed servers) use
8812 * the current filesystem's rpc_client and the user cred.
8814 if (err
== -NFS4ERR_WRONGSEC
)
8815 err
= _nfs41_proc_secinfo_no_name(server
, fhandle
, info
,
8820 case -NFS4ERR_WRONGSEC
:
8824 err
= nfs4_handle_exception(server
, err
, &exception
);
8826 } while (exception
.retry
);
8832 nfs41_find_root_sec(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
8833 struct nfs_fsinfo
*info
)
8837 rpc_authflavor_t flavor
= RPC_AUTH_MAXFLAVOR
;
8838 struct nfs4_secinfo_flavors
*flavors
;
8839 struct nfs4_secinfo4
*secinfo
;
8842 page
= alloc_page(GFP_KERNEL
);
8848 flavors
= page_address(page
);
8849 err
= nfs41_proc_secinfo_no_name(server
, fhandle
, info
, flavors
);
8852 * Fall back on "guess and check" method if
8853 * the server doesn't support SECINFO_NO_NAME
8855 if (err
== -NFS4ERR_WRONGSEC
|| err
== -ENOTSUPP
) {
8856 err
= nfs4_find_root_sec(server
, fhandle
, info
);
8862 for (i
= 0; i
< flavors
->num_flavors
; i
++) {
8863 secinfo
= &flavors
->flavors
[i
];
8865 switch (secinfo
->flavor
) {
8869 flavor
= rpcauth_get_pseudoflavor(secinfo
->flavor
,
8870 &secinfo
->flavor_info
);
8873 flavor
= RPC_AUTH_MAXFLAVOR
;
8877 if (!nfs_auth_info_match(&server
->auth_info
, flavor
))
8878 flavor
= RPC_AUTH_MAXFLAVOR
;
8880 if (flavor
!= RPC_AUTH_MAXFLAVOR
) {
8881 err
= nfs4_lookup_root_sec(server
, fhandle
,
8888 if (flavor
== RPC_AUTH_MAXFLAVOR
)
8899 static int _nfs41_test_stateid(struct nfs_server
*server
,
8900 nfs4_stateid
*stateid
,
8901 struct rpc_cred
*cred
)
8904 struct nfs41_test_stateid_args args
= {
8907 struct nfs41_test_stateid_res res
;
8908 struct rpc_message msg
= {
8909 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_TEST_STATEID
],
8914 struct rpc_clnt
*rpc_client
= server
->client
;
8916 nfs4_state_protect(server
->nfs_client
, NFS_SP4_MACH_CRED_STATEID
,
8919 dprintk("NFS call test_stateid %p\n", stateid
);
8920 nfs4_init_sequence(&args
.seq_args
, &res
.seq_res
, 0);
8921 nfs4_set_sequence_privileged(&args
.seq_args
);
8922 status
= nfs4_call_sync_sequence(rpc_client
, server
, &msg
,
8923 &args
.seq_args
, &res
.seq_res
);
8924 if (status
!= NFS_OK
) {
8925 dprintk("NFS reply test_stateid: failed, %d\n", status
);
8928 dprintk("NFS reply test_stateid: succeeded, %d\n", -res
.status
);
8932 static void nfs4_handle_delay_or_session_error(struct nfs_server
*server
,
8933 int err
, struct nfs4_exception
*exception
)
8935 exception
->retry
= 0;
8937 case -NFS4ERR_DELAY
:
8938 case -NFS4ERR_RETRY_UNCACHED_REP
:
8939 nfs4_handle_exception(server
, err
, exception
);
8941 case -NFS4ERR_BADSESSION
:
8942 case -NFS4ERR_BADSLOT
:
8943 case -NFS4ERR_BAD_HIGH_SLOT
:
8944 case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION
:
8945 case -NFS4ERR_DEADSESSION
:
8946 nfs4_do_handle_exception(server
, err
, exception
);
8951 * nfs41_test_stateid - perform a TEST_STATEID operation
8953 * @server: server / transport on which to perform the operation
8954 * @stateid: state ID to test
8957 * Returns NFS_OK if the server recognizes that "stateid" is valid.
8958 * Otherwise a negative NFS4ERR value is returned if the operation
8959 * failed or the state ID is not currently valid.
8961 static int nfs41_test_stateid(struct nfs_server
*server
,
8962 nfs4_stateid
*stateid
,
8963 struct rpc_cred
*cred
)
8965 struct nfs4_exception exception
= { };
8968 err
= _nfs41_test_stateid(server
, stateid
, cred
);
8969 nfs4_handle_delay_or_session_error(server
, err
, &exception
);
8970 } while (exception
.retry
);
8974 struct nfs_free_stateid_data
{
8975 struct nfs_server
*server
;
8976 struct nfs41_free_stateid_args args
;
8977 struct nfs41_free_stateid_res res
;
8980 static void nfs41_free_stateid_prepare(struct rpc_task
*task
, void *calldata
)
8982 struct nfs_free_stateid_data
*data
= calldata
;
8983 nfs4_setup_sequence(data
->server
->nfs_client
,
8984 &data
->args
.seq_args
,
8989 static void nfs41_free_stateid_done(struct rpc_task
*task
, void *calldata
)
8991 struct nfs_free_stateid_data
*data
= calldata
;
8993 nfs41_sequence_done(task
, &data
->res
.seq_res
);
8995 switch (task
->tk_status
) {
8996 case -NFS4ERR_DELAY
:
8997 if (nfs4_async_handle_error(task
, data
->server
, NULL
, NULL
) == -EAGAIN
)
8998 rpc_restart_call_prepare(task
);
9002 static void nfs41_free_stateid_release(void *calldata
)
9007 static const struct rpc_call_ops nfs41_free_stateid_ops
= {
9008 .rpc_call_prepare
= nfs41_free_stateid_prepare
,
9009 .rpc_call_done
= nfs41_free_stateid_done
,
9010 .rpc_release
= nfs41_free_stateid_release
,
9013 static struct rpc_task
*_nfs41_free_stateid(struct nfs_server
*server
,
9014 const nfs4_stateid
*stateid
,
9015 struct rpc_cred
*cred
,
9018 struct rpc_message msg
= {
9019 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_FREE_STATEID
],
9022 struct rpc_task_setup task_setup
= {
9023 .rpc_client
= server
->client
,
9024 .rpc_message
= &msg
,
9025 .callback_ops
= &nfs41_free_stateid_ops
,
9026 .flags
= RPC_TASK_ASYNC
,
9028 struct nfs_free_stateid_data
*data
;
9030 nfs4_state_protect(server
->nfs_client
, NFS_SP4_MACH_CRED_STATEID
,
9031 &task_setup
.rpc_client
, &msg
);
9033 dprintk("NFS call free_stateid %p\n", stateid
);
9034 data
= kmalloc(sizeof(*data
), GFP_NOFS
);
9036 return ERR_PTR(-ENOMEM
);
9037 data
->server
= server
;
9038 nfs4_stateid_copy(&data
->args
.stateid
, stateid
);
9040 task_setup
.callback_data
= data
;
9042 msg
.rpc_argp
= &data
->args
;
9043 msg
.rpc_resp
= &data
->res
;
9044 nfs4_init_sequence(&data
->args
.seq_args
, &data
->res
.seq_res
, 1);
9046 nfs4_set_sequence_privileged(&data
->args
.seq_args
);
9048 return rpc_run_task(&task_setup
);
9052 * nfs41_free_stateid - perform a FREE_STATEID operation
9054 * @server: server / transport on which to perform the operation
9055 * @stateid: state ID to release
9057 * @is_recovery: set to true if this call needs to be privileged
9059 * Note: this function is always asynchronous.
9061 static int nfs41_free_stateid(struct nfs_server
*server
,
9062 const nfs4_stateid
*stateid
,
9063 struct rpc_cred
*cred
,
9066 struct rpc_task
*task
;
9068 task
= _nfs41_free_stateid(server
, stateid
, cred
, is_recovery
);
9070 return PTR_ERR(task
);
9076 nfs41_free_lock_state(struct nfs_server
*server
, struct nfs4_lock_state
*lsp
)
9078 struct rpc_cred
*cred
= lsp
->ls_state
->owner
->so_cred
;
9080 nfs41_free_stateid(server
, &lsp
->ls_stateid
, cred
, false);
9081 nfs4_free_lock_state(server
, lsp
);
9084 static bool nfs41_match_stateid(const nfs4_stateid
*s1
,
9085 const nfs4_stateid
*s2
)
9087 if (s1
->type
!= s2
->type
)
9090 if (memcmp(s1
->other
, s2
->other
, sizeof(s1
->other
)) != 0)
9093 if (s1
->seqid
== s2
->seqid
)
9096 return s1
->seqid
== 0 || s2
->seqid
== 0;
9099 #endif /* CONFIG_NFS_V4_1 */
9101 static bool nfs4_match_stateid(const nfs4_stateid
*s1
,
9102 const nfs4_stateid
*s2
)
9104 return nfs4_stateid_match(s1
, s2
);
9108 static const struct nfs4_state_recovery_ops nfs40_reboot_recovery_ops
= {
9109 .owner_flag_bit
= NFS_OWNER_RECLAIM_REBOOT
,
9110 .state_flag_bit
= NFS_STATE_RECLAIM_REBOOT
,
9111 .recover_open
= nfs4_open_reclaim
,
9112 .recover_lock
= nfs4_lock_reclaim
,
9113 .establish_clid
= nfs4_init_clientid
,
9114 .detect_trunking
= nfs40_discover_server_trunking
,
9117 #if defined(CONFIG_NFS_V4_1)
9118 static const struct nfs4_state_recovery_ops nfs41_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
= nfs41_init_clientid
,
9124 .reclaim_complete
= nfs41_proc_reclaim_complete
,
9125 .detect_trunking
= nfs41_discover_server_trunking
,
9127 #endif /* CONFIG_NFS_V4_1 */
9129 static const struct nfs4_state_recovery_ops nfs40_nograce_recovery_ops
= {
9130 .owner_flag_bit
= NFS_OWNER_RECLAIM_NOGRACE
,
9131 .state_flag_bit
= NFS_STATE_RECLAIM_NOGRACE
,
9132 .recover_open
= nfs40_open_expired
,
9133 .recover_lock
= nfs4_lock_expired
,
9134 .establish_clid
= nfs4_init_clientid
,
9137 #if defined(CONFIG_NFS_V4_1)
9138 static const struct nfs4_state_recovery_ops nfs41_nograce_recovery_ops
= {
9139 .owner_flag_bit
= NFS_OWNER_RECLAIM_NOGRACE
,
9140 .state_flag_bit
= NFS_STATE_RECLAIM_NOGRACE
,
9141 .recover_open
= nfs41_open_expired
,
9142 .recover_lock
= nfs41_lock_expired
,
9143 .establish_clid
= nfs41_init_clientid
,
9145 #endif /* CONFIG_NFS_V4_1 */
9147 static const struct nfs4_state_maintenance_ops nfs40_state_renewal_ops
= {
9148 .sched_state_renewal
= nfs4_proc_async_renew
,
9149 .get_state_renewal_cred_locked
= nfs4_get_renew_cred_locked
,
9150 .renew_lease
= nfs4_proc_renew
,
9153 #if defined(CONFIG_NFS_V4_1)
9154 static const struct nfs4_state_maintenance_ops nfs41_state_renewal_ops
= {
9155 .sched_state_renewal
= nfs41_proc_async_sequence
,
9156 .get_state_renewal_cred_locked
= nfs4_get_machine_cred_locked
,
9157 .renew_lease
= nfs4_proc_sequence
,
9161 static const struct nfs4_mig_recovery_ops nfs40_mig_recovery_ops
= {
9162 .get_locations
= _nfs40_proc_get_locations
,
9163 .fsid_present
= _nfs40_proc_fsid_present
,
9166 #if defined(CONFIG_NFS_V4_1)
9167 static const struct nfs4_mig_recovery_ops nfs41_mig_recovery_ops
= {
9168 .get_locations
= _nfs41_proc_get_locations
,
9169 .fsid_present
= _nfs41_proc_fsid_present
,
9171 #endif /* CONFIG_NFS_V4_1 */
9173 static const struct nfs4_minor_version_ops nfs_v4_0_minor_ops
= {
9175 .init_caps
= NFS_CAP_READDIRPLUS
9176 | NFS_CAP_ATOMIC_OPEN
9177 | NFS_CAP_POSIX_LOCK
,
9178 .init_client
= nfs40_init_client
,
9179 .shutdown_client
= nfs40_shutdown_client
,
9180 .match_stateid
= nfs4_match_stateid
,
9181 .find_root_sec
= nfs4_find_root_sec
,
9182 .free_lock_state
= nfs4_release_lockowner
,
9183 .test_and_free_expired
= nfs40_test_and_free_expired_stateid
,
9184 .alloc_seqid
= nfs_alloc_seqid
,
9185 .call_sync_ops
= &nfs40_call_sync_ops
,
9186 .reboot_recovery_ops
= &nfs40_reboot_recovery_ops
,
9187 .nograce_recovery_ops
= &nfs40_nograce_recovery_ops
,
9188 .state_renewal_ops
= &nfs40_state_renewal_ops
,
9189 .mig_recovery_ops
= &nfs40_mig_recovery_ops
,
9192 #if defined(CONFIG_NFS_V4_1)
9193 static struct nfs_seqid
*
9194 nfs_alloc_no_seqid(struct nfs_seqid_counter
*arg1
, gfp_t arg2
)
9199 static const struct nfs4_minor_version_ops nfs_v4_1_minor_ops
= {
9201 .init_caps
= NFS_CAP_READDIRPLUS
9202 | NFS_CAP_ATOMIC_OPEN
9203 | NFS_CAP_POSIX_LOCK
9204 | NFS_CAP_STATEID_NFSV41
9205 | NFS_CAP_ATOMIC_OPEN_V1
,
9206 .init_client
= nfs41_init_client
,
9207 .shutdown_client
= nfs41_shutdown_client
,
9208 .match_stateid
= nfs41_match_stateid
,
9209 .find_root_sec
= nfs41_find_root_sec
,
9210 .free_lock_state
= nfs41_free_lock_state
,
9211 .test_and_free_expired
= nfs41_test_and_free_expired_stateid
,
9212 .alloc_seqid
= nfs_alloc_no_seqid
,
9213 .session_trunk
= nfs4_test_session_trunk
,
9214 .call_sync_ops
= &nfs41_call_sync_ops
,
9215 .reboot_recovery_ops
= &nfs41_reboot_recovery_ops
,
9216 .nograce_recovery_ops
= &nfs41_nograce_recovery_ops
,
9217 .state_renewal_ops
= &nfs41_state_renewal_ops
,
9218 .mig_recovery_ops
= &nfs41_mig_recovery_ops
,
9222 #if defined(CONFIG_NFS_V4_2)
9223 static const struct nfs4_minor_version_ops nfs_v4_2_minor_ops
= {
9225 .init_caps
= NFS_CAP_READDIRPLUS
9226 | NFS_CAP_ATOMIC_OPEN
9227 | NFS_CAP_POSIX_LOCK
9228 | NFS_CAP_STATEID_NFSV41
9229 | NFS_CAP_ATOMIC_OPEN_V1
9232 | NFS_CAP_DEALLOCATE
9234 | NFS_CAP_LAYOUTSTATS
9236 .init_client
= nfs41_init_client
,
9237 .shutdown_client
= nfs41_shutdown_client
,
9238 .match_stateid
= nfs41_match_stateid
,
9239 .find_root_sec
= nfs41_find_root_sec
,
9240 .free_lock_state
= nfs41_free_lock_state
,
9241 .call_sync_ops
= &nfs41_call_sync_ops
,
9242 .test_and_free_expired
= nfs41_test_and_free_expired_stateid
,
9243 .alloc_seqid
= nfs_alloc_no_seqid
,
9244 .session_trunk
= nfs4_test_session_trunk
,
9245 .reboot_recovery_ops
= &nfs41_reboot_recovery_ops
,
9246 .nograce_recovery_ops
= &nfs41_nograce_recovery_ops
,
9247 .state_renewal_ops
= &nfs41_state_renewal_ops
,
9248 .mig_recovery_ops
= &nfs41_mig_recovery_ops
,
9252 const struct nfs4_minor_version_ops
*nfs_v4_minor_ops
[] = {
9253 [0] = &nfs_v4_0_minor_ops
,
9254 #if defined(CONFIG_NFS_V4_1)
9255 [1] = &nfs_v4_1_minor_ops
,
9257 #if defined(CONFIG_NFS_V4_2)
9258 [2] = &nfs_v4_2_minor_ops
,
9262 static ssize_t
nfs4_listxattr(struct dentry
*dentry
, char *list
, size_t size
)
9264 ssize_t error
, error2
;
9266 error
= generic_listxattr(dentry
, list
, size
);
9274 error2
= nfs4_listxattr_nfs4_label(d_inode(dentry
), list
, size
);
9277 return error
+ error2
;
9280 static const struct inode_operations nfs4_dir_inode_operations
= {
9281 .create
= nfs_create
,
9282 .lookup
= nfs_lookup
,
9283 .atomic_open
= nfs_atomic_open
,
9285 .unlink
= nfs_unlink
,
9286 .symlink
= nfs_symlink
,
9290 .rename
= nfs_rename
,
9291 .permission
= nfs_permission
,
9292 .getattr
= nfs_getattr
,
9293 .setattr
= nfs_setattr
,
9294 .listxattr
= nfs4_listxattr
,
9297 static const struct inode_operations nfs4_file_inode_operations
= {
9298 .permission
= nfs_permission
,
9299 .getattr
= nfs_getattr
,
9300 .setattr
= nfs_setattr
,
9301 .listxattr
= nfs4_listxattr
,
9304 const struct nfs_rpc_ops nfs_v4_clientops
= {
9305 .version
= 4, /* protocol version */
9306 .dentry_ops
= &nfs4_dentry_operations
,
9307 .dir_inode_ops
= &nfs4_dir_inode_operations
,
9308 .file_inode_ops
= &nfs4_file_inode_operations
,
9309 .file_ops
= &nfs4_file_operations
,
9310 .getroot
= nfs4_proc_get_root
,
9311 .submount
= nfs4_submount
,
9312 .try_mount
= nfs4_try_mount
,
9313 .getattr
= nfs4_proc_getattr
,
9314 .setattr
= nfs4_proc_setattr
,
9315 .lookup
= nfs4_proc_lookup
,
9316 .access
= nfs4_proc_access
,
9317 .readlink
= nfs4_proc_readlink
,
9318 .create
= nfs4_proc_create
,
9319 .remove
= nfs4_proc_remove
,
9320 .unlink_setup
= nfs4_proc_unlink_setup
,
9321 .unlink_rpc_prepare
= nfs4_proc_unlink_rpc_prepare
,
9322 .unlink_done
= nfs4_proc_unlink_done
,
9323 .rename_setup
= nfs4_proc_rename_setup
,
9324 .rename_rpc_prepare
= nfs4_proc_rename_rpc_prepare
,
9325 .rename_done
= nfs4_proc_rename_done
,
9326 .link
= nfs4_proc_link
,
9327 .symlink
= nfs4_proc_symlink
,
9328 .mkdir
= nfs4_proc_mkdir
,
9329 .rmdir
= nfs4_proc_remove
,
9330 .readdir
= nfs4_proc_readdir
,
9331 .mknod
= nfs4_proc_mknod
,
9332 .statfs
= nfs4_proc_statfs
,
9333 .fsinfo
= nfs4_proc_fsinfo
,
9334 .pathconf
= nfs4_proc_pathconf
,
9335 .set_capabilities
= nfs4_server_capabilities
,
9336 .decode_dirent
= nfs4_decode_dirent
,
9337 .pgio_rpc_prepare
= nfs4_proc_pgio_rpc_prepare
,
9338 .read_setup
= nfs4_proc_read_setup
,
9339 .read_done
= nfs4_read_done
,
9340 .write_setup
= nfs4_proc_write_setup
,
9341 .write_done
= nfs4_write_done
,
9342 .commit_setup
= nfs4_proc_commit_setup
,
9343 .commit_rpc_prepare
= nfs4_proc_commit_rpc_prepare
,
9344 .commit_done
= nfs4_commit_done
,
9345 .lock
= nfs4_proc_lock
,
9346 .clear_acl_cache
= nfs4_zap_acl_attr
,
9347 .close_context
= nfs4_close_context
,
9348 .open_context
= nfs4_atomic_open
,
9349 .have_delegation
= nfs4_have_delegation
,
9350 .return_delegation
= nfs4_inode_return_delegation
,
9351 .alloc_client
= nfs4_alloc_client
,
9352 .init_client
= nfs4_init_client
,
9353 .free_client
= nfs4_free_client
,
9354 .create_server
= nfs4_create_server
,
9355 .clone_server
= nfs_clone_server
,
9358 static const struct xattr_handler nfs4_xattr_nfs4_acl_handler
= {
9359 .name
= XATTR_NAME_NFSV4_ACL
,
9360 .list
= nfs4_xattr_list_nfs4_acl
,
9361 .get
= nfs4_xattr_get_nfs4_acl
,
9362 .set
= nfs4_xattr_set_nfs4_acl
,
9365 const struct xattr_handler
*nfs4_xattr_handlers
[] = {
9366 &nfs4_xattr_nfs4_acl_handler
,
9367 #ifdef CONFIG_NFS_V4_SECURITY_LABEL
9368 &nfs4_xattr_nfs4_label_handler
,