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>
57 #include <linux/iversion.h>
60 #include "delegation.h"
66 #include "nfs4idmap.h"
67 #include "nfs4session.h"
70 #include "nfs4trace.h"
72 #define NFSDBG_FACILITY NFSDBG_PROC
74 #define NFS4_BITMASK_SZ 3
76 #define NFS4_POLL_RETRY_MIN (HZ/10)
77 #define NFS4_POLL_RETRY_MAX (15*HZ)
79 /* file attributes which can be mapped to nfs attributes */
80 #define NFS4_VALID_ATTRS (ATTR_MODE \
91 static int _nfs4_recover_proc_open(struct nfs4_opendata
*data
);
92 static int nfs4_do_fsinfo(struct nfs_server
*, struct nfs_fh
*, struct nfs_fsinfo
*);
93 static void nfs_fixup_referral_attributes(struct nfs_fattr
*fattr
);
94 static int nfs4_proc_getattr(struct nfs_server
*, struct nfs_fh
*, struct nfs_fattr
*, struct nfs4_label
*label
, struct inode
*inode
);
95 static int _nfs4_proc_getattr(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fattr
*fattr
, struct nfs4_label
*label
, struct inode
*inode
);
96 static int nfs4_do_setattr(struct inode
*inode
, const struct cred
*cred
,
97 struct nfs_fattr
*fattr
, struct iattr
*sattr
,
98 struct nfs_open_context
*ctx
, struct nfs4_label
*ilabel
,
99 struct nfs4_label
*olabel
);
100 #ifdef CONFIG_NFS_V4_1
101 static struct rpc_task
*_nfs41_proc_sequence(struct nfs_client
*clp
,
102 const struct cred
*cred
,
103 struct nfs4_slot
*slot
,
105 static int nfs41_test_stateid(struct nfs_server
*, nfs4_stateid
*,
106 const struct cred
*);
107 static int nfs41_free_stateid(struct nfs_server
*, const nfs4_stateid
*,
108 const struct cred
*, bool);
111 #ifdef CONFIG_NFS_V4_SECURITY_LABEL
112 static inline struct nfs4_label
*
113 nfs4_label_init_security(struct inode
*dir
, struct dentry
*dentry
,
114 struct iattr
*sattr
, struct nfs4_label
*label
)
121 if (nfs_server_capable(dir
, NFS_CAP_SECURITY_LABEL
) == 0)
124 err
= security_dentry_init_security(dentry
, sattr
->ia_mode
,
125 &dentry
->d_name
, (void **)&label
->label
, &label
->len
);
132 nfs4_label_release_security(struct nfs4_label
*label
)
135 security_release_secctx(label
->label
, label
->len
);
137 static inline u32
*nfs4_bitmask(struct nfs_server
*server
, struct nfs4_label
*label
)
140 return server
->attr_bitmask
;
142 return server
->attr_bitmask_nl
;
145 static inline struct nfs4_label
*
146 nfs4_label_init_security(struct inode
*dir
, struct dentry
*dentry
,
147 struct iattr
*sattr
, struct nfs4_label
*l
)
150 nfs4_label_release_security(struct nfs4_label
*label
)
153 nfs4_bitmask(struct nfs_server
*server
, struct nfs4_label
*label
)
154 { return server
->attr_bitmask
; }
157 /* Prevent leaks of NFSv4 errors into userland */
158 static int nfs4_map_errors(int err
)
163 case -NFS4ERR_RESOURCE
:
164 case -NFS4ERR_LAYOUTTRYLATER
:
165 case -NFS4ERR_RECALLCONFLICT
:
167 case -NFS4ERR_WRONGSEC
:
168 case -NFS4ERR_WRONG_CRED
:
170 case -NFS4ERR_BADOWNER
:
171 case -NFS4ERR_BADNAME
:
173 case -NFS4ERR_SHARE_DENIED
:
175 case -NFS4ERR_MINOR_VERS_MISMATCH
:
176 return -EPROTONOSUPPORT
;
177 case -NFS4ERR_FILE_OPEN
:
180 dprintk("%s could not handle NFSv4 error %d\n",
188 * This is our standard bitmap for GETATTR requests.
190 const u32 nfs4_fattr_bitmap
[3] = {
192 | FATTR4_WORD0_CHANGE
195 | FATTR4_WORD0_FILEID
,
197 | FATTR4_WORD1_NUMLINKS
199 | FATTR4_WORD1_OWNER_GROUP
200 | FATTR4_WORD1_RAWDEV
201 | FATTR4_WORD1_SPACE_USED
202 | FATTR4_WORD1_TIME_ACCESS
203 | FATTR4_WORD1_TIME_METADATA
204 | FATTR4_WORD1_TIME_MODIFY
205 | FATTR4_WORD1_MOUNTED_ON_FILEID
,
206 #ifdef CONFIG_NFS_V4_SECURITY_LABEL
207 FATTR4_WORD2_SECURITY_LABEL
211 static const u32 nfs4_pnfs_open_bitmap
[3] = {
213 | FATTR4_WORD0_CHANGE
216 | FATTR4_WORD0_FILEID
,
218 | FATTR4_WORD1_NUMLINKS
220 | FATTR4_WORD1_OWNER_GROUP
221 | FATTR4_WORD1_RAWDEV
222 | FATTR4_WORD1_SPACE_USED
223 | FATTR4_WORD1_TIME_ACCESS
224 | FATTR4_WORD1_TIME_METADATA
225 | FATTR4_WORD1_TIME_MODIFY
,
226 FATTR4_WORD2_MDSTHRESHOLD
227 #ifdef CONFIG_NFS_V4_SECURITY_LABEL
228 | FATTR4_WORD2_SECURITY_LABEL
232 static const u32 nfs4_open_noattr_bitmap
[3] = {
234 | FATTR4_WORD0_FILEID
,
237 const u32 nfs4_statfs_bitmap
[3] = {
238 FATTR4_WORD0_FILES_AVAIL
239 | FATTR4_WORD0_FILES_FREE
240 | FATTR4_WORD0_FILES_TOTAL
,
241 FATTR4_WORD1_SPACE_AVAIL
242 | FATTR4_WORD1_SPACE_FREE
243 | FATTR4_WORD1_SPACE_TOTAL
246 const u32 nfs4_pathconf_bitmap
[3] = {
248 | FATTR4_WORD0_MAXNAME
,
252 const u32 nfs4_fsinfo_bitmap
[3] = { FATTR4_WORD0_MAXFILESIZE
253 | FATTR4_WORD0_MAXREAD
254 | FATTR4_WORD0_MAXWRITE
255 | FATTR4_WORD0_LEASE_TIME
,
256 FATTR4_WORD1_TIME_DELTA
257 | FATTR4_WORD1_FS_LAYOUT_TYPES
,
258 FATTR4_WORD2_LAYOUT_BLKSIZE
259 | FATTR4_WORD2_CLONE_BLKSIZE
262 const u32 nfs4_fs_locations_bitmap
[3] = {
266 | FATTR4_WORD0_FILEID
267 | FATTR4_WORD0_FS_LOCATIONS
,
269 | FATTR4_WORD1_OWNER_GROUP
270 | FATTR4_WORD1_RAWDEV
271 | FATTR4_WORD1_SPACE_USED
272 | FATTR4_WORD1_TIME_ACCESS
273 | FATTR4_WORD1_TIME_METADATA
274 | FATTR4_WORD1_TIME_MODIFY
275 | FATTR4_WORD1_MOUNTED_ON_FILEID
,
278 static void nfs4_bitmap_copy_adjust(__u32
*dst
, const __u32
*src
,
281 unsigned long cache_validity
;
283 memcpy(dst
, src
, NFS4_BITMASK_SZ
*sizeof(*dst
));
284 if (!inode
|| !nfs4_have_delegation(inode
, FMODE_READ
))
287 cache_validity
= READ_ONCE(NFS_I(inode
)->cache_validity
);
288 if (!(cache_validity
& NFS_INO_REVAL_FORCED
))
289 cache_validity
&= ~(NFS_INO_INVALID_CHANGE
290 | NFS_INO_INVALID_SIZE
);
292 if (!(cache_validity
& NFS_INO_INVALID_SIZE
))
293 dst
[0] &= ~FATTR4_WORD0_SIZE
;
295 if (!(cache_validity
& NFS_INO_INVALID_CHANGE
))
296 dst
[0] &= ~FATTR4_WORD0_CHANGE
;
299 static void nfs4_bitmap_copy_adjust_setattr(__u32
*dst
,
300 const __u32
*src
, struct inode
*inode
)
302 nfs4_bitmap_copy_adjust(dst
, src
, inode
);
305 static void nfs4_setup_readdir(u64 cookie
, __be32
*verifier
, struct dentry
*dentry
,
306 struct nfs4_readdir_arg
*readdir
)
308 unsigned int attrs
= FATTR4_WORD0_FILEID
| FATTR4_WORD0_TYPE
;
312 readdir
->cookie
= cookie
;
313 memcpy(&readdir
->verifier
, verifier
, sizeof(readdir
->verifier
));
318 memset(&readdir
->verifier
, 0, sizeof(readdir
->verifier
));
323 * NFSv4 servers do not return entries for '.' and '..'
324 * Therefore, we fake these entries here. We let '.'
325 * have cookie 0 and '..' have cookie 1. Note that
326 * when talking to the server, we always send cookie 0
329 start
= p
= kmap_atomic(*readdir
->pages
);
332 *p
++ = xdr_one
; /* next */
333 *p
++ = xdr_zero
; /* cookie, first word */
334 *p
++ = xdr_one
; /* cookie, second word */
335 *p
++ = xdr_one
; /* entry len */
336 memcpy(p
, ".\0\0\0", 4); /* entry */
338 *p
++ = xdr_one
; /* bitmap length */
339 *p
++ = htonl(attrs
); /* bitmap */
340 *p
++ = htonl(12); /* attribute buffer length */
341 *p
++ = htonl(NF4DIR
);
342 p
= xdr_encode_hyper(p
, NFS_FILEID(d_inode(dentry
)));
345 *p
++ = xdr_one
; /* next */
346 *p
++ = xdr_zero
; /* cookie, first word */
347 *p
++ = xdr_two
; /* cookie, second word */
348 *p
++ = xdr_two
; /* entry len */
349 memcpy(p
, "..\0\0", 4); /* entry */
351 *p
++ = xdr_one
; /* bitmap length */
352 *p
++ = htonl(attrs
); /* bitmap */
353 *p
++ = htonl(12); /* attribute buffer length */
354 *p
++ = htonl(NF4DIR
);
355 p
= xdr_encode_hyper(p
, NFS_FILEID(d_inode(dentry
->d_parent
)));
357 readdir
->pgbase
= (char *)p
- (char *)start
;
358 readdir
->count
-= readdir
->pgbase
;
359 kunmap_atomic(start
);
362 static void nfs4_test_and_free_stateid(struct nfs_server
*server
,
363 nfs4_stateid
*stateid
,
364 const struct cred
*cred
)
366 const struct nfs4_minor_version_ops
*ops
= server
->nfs_client
->cl_mvops
;
368 ops
->test_and_free_expired(server
, stateid
, cred
);
371 static void __nfs4_free_revoked_stateid(struct nfs_server
*server
,
372 nfs4_stateid
*stateid
,
373 const struct cred
*cred
)
375 stateid
->type
= NFS4_REVOKED_STATEID_TYPE
;
376 nfs4_test_and_free_stateid(server
, stateid
, cred
);
379 static void nfs4_free_revoked_stateid(struct nfs_server
*server
,
380 const nfs4_stateid
*stateid
,
381 const struct cred
*cred
)
385 nfs4_stateid_copy(&tmp
, stateid
);
386 __nfs4_free_revoked_stateid(server
, &tmp
, cred
);
389 static long nfs4_update_delay(long *timeout
)
393 return NFS4_POLL_RETRY_MAX
;
395 *timeout
= NFS4_POLL_RETRY_MIN
;
396 if (*timeout
> NFS4_POLL_RETRY_MAX
)
397 *timeout
= NFS4_POLL_RETRY_MAX
;
403 static int nfs4_delay_killable(long *timeout
)
407 freezable_schedule_timeout_killable_unsafe(
408 nfs4_update_delay(timeout
));
409 if (!__fatal_signal_pending(current
))
414 static int nfs4_delay_interruptible(long *timeout
)
418 freezable_schedule_timeout_interruptible(nfs4_update_delay(timeout
));
419 if (!signal_pending(current
))
421 return __fatal_signal_pending(current
) ? -EINTR
:-ERESTARTSYS
;
424 static int nfs4_delay(long *timeout
, bool interruptible
)
427 return nfs4_delay_interruptible(timeout
);
428 return nfs4_delay_killable(timeout
);
431 /* This is the error handling routine for processes that are allowed
434 static int nfs4_do_handle_exception(struct nfs_server
*server
,
435 int errorcode
, struct nfs4_exception
*exception
)
437 struct nfs_client
*clp
= server
->nfs_client
;
438 struct nfs4_state
*state
= exception
->state
;
439 const nfs4_stateid
*stateid
= exception
->stateid
;
440 struct inode
*inode
= exception
->inode
;
443 exception
->delay
= 0;
444 exception
->recovering
= 0;
445 exception
->retry
= 0;
447 if (stateid
== NULL
&& state
!= NULL
)
448 stateid
= &state
->stateid
;
453 case -NFS4ERR_BADHANDLE
:
455 if (inode
!= NULL
&& S_ISREG(inode
->i_mode
))
456 pnfs_destroy_layout(NFS_I(inode
));
458 case -NFS4ERR_DELEG_REVOKED
:
459 case -NFS4ERR_ADMIN_REVOKED
:
460 case -NFS4ERR_EXPIRED
:
461 case -NFS4ERR_BAD_STATEID
:
462 if (inode
!= NULL
&& stateid
!= NULL
) {
463 nfs_inode_find_state_and_recover(inode
,
465 goto wait_on_recovery
;
468 case -NFS4ERR_OPENMODE
:
472 err
= nfs_async_inode_return_delegation(inode
,
475 goto wait_on_recovery
;
476 if (stateid
!= NULL
&& stateid
->type
== NFS4_DELEGATION_STATEID_TYPE
) {
477 exception
->retry
= 1;
483 ret
= nfs4_schedule_stateid_recovery(server
, state
);
486 goto wait_on_recovery
;
487 case -NFS4ERR_STALE_STATEID
:
488 case -NFS4ERR_STALE_CLIENTID
:
489 nfs4_schedule_lease_recovery(clp
);
490 goto wait_on_recovery
;
492 ret
= nfs4_schedule_migration_recovery(server
);
495 goto wait_on_recovery
;
496 case -NFS4ERR_LEASE_MOVED
:
497 nfs4_schedule_lease_moved_recovery(clp
);
498 goto wait_on_recovery
;
499 #if defined(CONFIG_NFS_V4_1)
500 case -NFS4ERR_BADSESSION
:
501 case -NFS4ERR_BADSLOT
:
502 case -NFS4ERR_BAD_HIGH_SLOT
:
503 case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION
:
504 case -NFS4ERR_DEADSESSION
:
505 case -NFS4ERR_SEQ_FALSE_RETRY
:
506 case -NFS4ERR_SEQ_MISORDERED
:
507 dprintk("%s ERROR: %d Reset session\n", __func__
,
509 nfs4_schedule_session_recovery(clp
->cl_session
, errorcode
);
510 goto wait_on_recovery
;
511 #endif /* defined(CONFIG_NFS_V4_1) */
512 case -NFS4ERR_FILE_OPEN
:
513 if (exception
->timeout
> HZ
) {
514 /* We have retried a decent amount, time to
522 nfs_inc_server_stats(server
, NFSIOS_DELAY
);
525 case -NFS4ERR_LAYOUTTRYLATER
:
526 case -NFS4ERR_RECALLCONFLICT
:
527 exception
->delay
= 1;
530 case -NFS4ERR_RETRY_UNCACHED_REP
:
531 case -NFS4ERR_OLD_STATEID
:
532 exception
->retry
= 1;
534 case -NFS4ERR_BADOWNER
:
535 /* The following works around a Linux server bug! */
536 case -NFS4ERR_BADNAME
:
537 if (server
->caps
& NFS_CAP_UIDGID_NOMAP
) {
538 server
->caps
&= ~NFS_CAP_UIDGID_NOMAP
;
539 exception
->retry
= 1;
540 printk(KERN_WARNING
"NFS: v4 server %s "
541 "does not accept raw "
543 "Reenabling the idmapper.\n",
544 server
->nfs_client
->cl_hostname
);
547 /* We failed to handle the error */
548 return nfs4_map_errors(ret
);
550 exception
->recovering
= 1;
554 /* This is the error handling routine for processes that are allowed
557 int nfs4_handle_exception(struct nfs_server
*server
, int errorcode
, struct nfs4_exception
*exception
)
559 struct nfs_client
*clp
= server
->nfs_client
;
562 ret
= nfs4_do_handle_exception(server
, errorcode
, exception
);
563 if (exception
->delay
) {
564 ret
= nfs4_delay(&exception
->timeout
,
565 exception
->interruptible
);
568 if (exception
->recovering
) {
569 ret
= nfs4_wait_clnt_recover(clp
);
570 if (test_bit(NFS_MIG_FAILED
, &server
->mig_status
))
577 exception
->retry
= 1;
582 nfs4_async_handle_exception(struct rpc_task
*task
, struct nfs_server
*server
,
583 int errorcode
, struct nfs4_exception
*exception
)
585 struct nfs_client
*clp
= server
->nfs_client
;
588 ret
= nfs4_do_handle_exception(server
, errorcode
, exception
);
589 if (exception
->delay
) {
590 rpc_delay(task
, nfs4_update_delay(&exception
->timeout
));
593 if (exception
->recovering
) {
594 rpc_sleep_on(&clp
->cl_rpcwaitq
, task
, NULL
);
595 if (test_bit(NFS4CLNT_MANAGER_RUNNING
, &clp
->cl_state
) == 0)
596 rpc_wake_up_queued_task(&clp
->cl_rpcwaitq
, task
);
599 if (test_bit(NFS_MIG_FAILED
, &server
->mig_status
))
604 exception
->retry
= 1;
606 * For NFS4ERR_MOVED, the client transport will need to
607 * be recomputed after migration recovery has completed.
609 if (errorcode
== -NFS4ERR_MOVED
)
610 rpc_task_release_transport(task
);
616 nfs4_async_handle_error(struct rpc_task
*task
, struct nfs_server
*server
,
617 struct nfs4_state
*state
, long *timeout
)
619 struct nfs4_exception exception
= {
623 if (task
->tk_status
>= 0)
626 exception
.timeout
= *timeout
;
627 task
->tk_status
= nfs4_async_handle_exception(task
, server
,
630 if (exception
.delay
&& timeout
)
631 *timeout
= exception
.timeout
;
638 * Return 'true' if 'clp' is using an rpc_client that is integrity protected
639 * or 'false' otherwise.
641 static bool _nfs4_is_integrity_protected(struct nfs_client
*clp
)
643 rpc_authflavor_t flavor
= clp
->cl_rpcclient
->cl_auth
->au_flavor
;
644 return (flavor
== RPC_AUTH_GSS_KRB5I
) || (flavor
== RPC_AUTH_GSS_KRB5P
);
647 static void do_renew_lease(struct nfs_client
*clp
, unsigned long timestamp
)
649 spin_lock(&clp
->cl_lock
);
650 if (time_before(clp
->cl_last_renewal
,timestamp
))
651 clp
->cl_last_renewal
= timestamp
;
652 spin_unlock(&clp
->cl_lock
);
655 static void renew_lease(const struct nfs_server
*server
, unsigned long timestamp
)
657 struct nfs_client
*clp
= server
->nfs_client
;
659 if (!nfs4_has_session(clp
))
660 do_renew_lease(clp
, timestamp
);
663 struct nfs4_call_sync_data
{
664 const struct nfs_server
*seq_server
;
665 struct nfs4_sequence_args
*seq_args
;
666 struct nfs4_sequence_res
*seq_res
;
669 void nfs4_init_sequence(struct nfs4_sequence_args
*args
,
670 struct nfs4_sequence_res
*res
, int cache_reply
,
673 args
->sa_slot
= NULL
;
674 args
->sa_cache_this
= cache_reply
;
675 args
->sa_privileged
= privileged
;
680 static void nfs40_sequence_free_slot(struct nfs4_sequence_res
*res
)
682 struct nfs4_slot
*slot
= res
->sr_slot
;
683 struct nfs4_slot_table
*tbl
;
686 spin_lock(&tbl
->slot_tbl_lock
);
687 if (!nfs41_wake_and_assign_slot(tbl
, slot
))
688 nfs4_free_slot(tbl
, slot
);
689 spin_unlock(&tbl
->slot_tbl_lock
);
694 static int nfs40_sequence_done(struct rpc_task
*task
,
695 struct nfs4_sequence_res
*res
)
697 if (res
->sr_slot
!= NULL
)
698 nfs40_sequence_free_slot(res
);
702 #if defined(CONFIG_NFS_V4_1)
704 static void nfs41_release_slot(struct nfs4_slot
*slot
)
706 struct nfs4_session
*session
;
707 struct nfs4_slot_table
*tbl
;
708 bool send_new_highest_used_slotid
= false;
713 session
= tbl
->session
;
715 /* Bump the slot sequence number */
720 spin_lock(&tbl
->slot_tbl_lock
);
721 /* Be nice to the server: try to ensure that the last transmitted
722 * value for highest_user_slotid <= target_highest_slotid
724 if (tbl
->highest_used_slotid
> tbl
->target_highest_slotid
)
725 send_new_highest_used_slotid
= true;
727 if (nfs41_wake_and_assign_slot(tbl
, slot
)) {
728 send_new_highest_used_slotid
= false;
731 nfs4_free_slot(tbl
, slot
);
733 if (tbl
->highest_used_slotid
!= NFS4_NO_SLOT
)
734 send_new_highest_used_slotid
= false;
736 spin_unlock(&tbl
->slot_tbl_lock
);
737 if (send_new_highest_used_slotid
)
738 nfs41_notify_server(session
->clp
);
739 if (waitqueue_active(&tbl
->slot_waitq
))
740 wake_up_all(&tbl
->slot_waitq
);
743 static void nfs41_sequence_free_slot(struct nfs4_sequence_res
*res
)
745 nfs41_release_slot(res
->sr_slot
);
749 static void nfs4_slot_sequence_record_sent(struct nfs4_slot
*slot
,
752 if ((s32
)(seqnr
- slot
->seq_nr_highest_sent
) > 0)
753 slot
->seq_nr_highest_sent
= seqnr
;
755 static void nfs4_slot_sequence_acked(struct nfs4_slot
*slot
,
758 slot
->seq_nr_highest_sent
= seqnr
;
759 slot
->seq_nr_last_acked
= seqnr
;
762 static int nfs41_sequence_process(struct rpc_task
*task
,
763 struct nfs4_sequence_res
*res
)
765 struct nfs4_session
*session
;
766 struct nfs4_slot
*slot
= res
->sr_slot
;
767 struct nfs_client
*clp
;
772 /* don't increment the sequence number if the task wasn't sent */
773 if (!RPC_WAS_SENT(task
) || slot
->seq_done
)
776 session
= slot
->table
->session
;
778 trace_nfs4_sequence_done(session
, res
);
779 /* Check the SEQUENCE operation status */
780 switch (res
->sr_status
) {
782 /* Mark this sequence number as having been acked */
783 nfs4_slot_sequence_acked(slot
, slot
->seq_nr
);
784 /* Update the slot's sequence and clientid lease timer */
787 do_renew_lease(clp
, res
->sr_timestamp
);
788 /* Check sequence flags */
789 nfs41_handle_sequence_flag_errors(clp
, res
->sr_status_flags
,
791 nfs41_update_target_slotid(slot
->table
, slot
, res
);
795 * sr_status remains 1 if an RPC level error occurred.
796 * The server may or may not have processed the sequence
799 nfs4_slot_sequence_record_sent(slot
, slot
->seq_nr
);
803 /* The server detected a resend of the RPC call and
804 * returned NFS4ERR_DELAY as per Section 2.10.6.2
807 dprintk("%s: slot=%u seq=%u: Operation in progress\n",
811 nfs4_slot_sequence_acked(slot
, slot
->seq_nr
);
813 case -NFS4ERR_RETRY_UNCACHED_REP
:
814 case -NFS4ERR_SEQ_FALSE_RETRY
:
816 * The server thinks we tried to replay a request.
817 * Retry the call after bumping the sequence ID.
819 nfs4_slot_sequence_acked(slot
, slot
->seq_nr
);
821 case -NFS4ERR_BADSLOT
:
823 * The slot id we used was probably retired. Try again
824 * using a different slot id.
826 if (slot
->slot_nr
< slot
->table
->target_highest_slotid
)
827 goto session_recover
;
829 case -NFS4ERR_SEQ_MISORDERED
:
830 nfs4_slot_sequence_record_sent(slot
, slot
->seq_nr
);
832 * Were one or more calls using this slot interrupted?
833 * If the server never received the request, then our
834 * transmitted slot sequence number may be too high.
836 if ((s32
)(slot
->seq_nr
- slot
->seq_nr_last_acked
) > 1) {
842 * A retry might be sent while the original request is
843 * still in progress on the replier. The replier SHOULD
844 * deal with the issue by returning NFS4ERR_DELAY as the
845 * reply to SEQUENCE or CB_SEQUENCE operation, but
846 * implementations MAY return NFS4ERR_SEQ_MISORDERED.
848 * Restart the search after a delay.
850 slot
->seq_nr
= slot
->seq_nr_highest_sent
;
853 /* Just update the slot sequence no. */
857 /* The session may be reset by one of the error handlers. */
858 dprintk("%s: Error %d free the slot \n", __func__
, res
->sr_status
);
862 nfs4_schedule_session_recovery(session
, res
->sr_status
);
867 if (rpc_restart_call_prepare(task
)) {
868 nfs41_sequence_free_slot(res
);
874 if (!rpc_restart_call(task
))
876 rpc_delay(task
, NFS4_POLL_RETRY_MAX
);
880 int nfs41_sequence_done(struct rpc_task
*task
, struct nfs4_sequence_res
*res
)
882 if (!nfs41_sequence_process(task
, res
))
884 if (res
->sr_slot
!= NULL
)
885 nfs41_sequence_free_slot(res
);
889 EXPORT_SYMBOL_GPL(nfs41_sequence_done
);
891 static int nfs4_sequence_process(struct rpc_task
*task
, struct nfs4_sequence_res
*res
)
893 if (res
->sr_slot
== NULL
)
895 if (res
->sr_slot
->table
->session
!= NULL
)
896 return nfs41_sequence_process(task
, res
);
897 return nfs40_sequence_done(task
, res
);
900 static void nfs4_sequence_free_slot(struct nfs4_sequence_res
*res
)
902 if (res
->sr_slot
!= NULL
) {
903 if (res
->sr_slot
->table
->session
!= NULL
)
904 nfs41_sequence_free_slot(res
);
906 nfs40_sequence_free_slot(res
);
910 int nfs4_sequence_done(struct rpc_task
*task
, struct nfs4_sequence_res
*res
)
912 if (res
->sr_slot
== NULL
)
914 if (!res
->sr_slot
->table
->session
)
915 return nfs40_sequence_done(task
, res
);
916 return nfs41_sequence_done(task
, res
);
918 EXPORT_SYMBOL_GPL(nfs4_sequence_done
);
920 static void nfs41_call_sync_prepare(struct rpc_task
*task
, void *calldata
)
922 struct nfs4_call_sync_data
*data
= calldata
;
924 dprintk("--> %s data->seq_server %p\n", __func__
, data
->seq_server
);
926 nfs4_setup_sequence(data
->seq_server
->nfs_client
,
927 data
->seq_args
, data
->seq_res
, task
);
930 static void nfs41_call_sync_done(struct rpc_task
*task
, void *calldata
)
932 struct nfs4_call_sync_data
*data
= calldata
;
934 nfs41_sequence_done(task
, data
->seq_res
);
937 static const struct rpc_call_ops nfs41_call_sync_ops
= {
938 .rpc_call_prepare
= nfs41_call_sync_prepare
,
939 .rpc_call_done
= nfs41_call_sync_done
,
942 #else /* !CONFIG_NFS_V4_1 */
944 static int nfs4_sequence_process(struct rpc_task
*task
, struct nfs4_sequence_res
*res
)
946 return nfs40_sequence_done(task
, res
);
949 static void nfs4_sequence_free_slot(struct nfs4_sequence_res
*res
)
951 if (res
->sr_slot
!= NULL
)
952 nfs40_sequence_free_slot(res
);
955 int nfs4_sequence_done(struct rpc_task
*task
,
956 struct nfs4_sequence_res
*res
)
958 return nfs40_sequence_done(task
, res
);
960 EXPORT_SYMBOL_GPL(nfs4_sequence_done
);
962 #endif /* !CONFIG_NFS_V4_1 */
964 static void nfs41_sequence_res_init(struct nfs4_sequence_res
*res
)
966 res
->sr_timestamp
= jiffies
;
967 res
->sr_status_flags
= 0;
972 void nfs4_sequence_attach_slot(struct nfs4_sequence_args
*args
,
973 struct nfs4_sequence_res
*res
,
974 struct nfs4_slot
*slot
)
978 slot
->privileged
= args
->sa_privileged
? 1 : 0;
979 args
->sa_slot
= slot
;
984 int nfs4_setup_sequence(struct nfs_client
*client
,
985 struct nfs4_sequence_args
*args
,
986 struct nfs4_sequence_res
*res
,
987 struct rpc_task
*task
)
989 struct nfs4_session
*session
= nfs4_get_session(client
);
990 struct nfs4_slot_table
*tbl
= client
->cl_slot_tbl
;
991 struct nfs4_slot
*slot
;
993 /* slot already allocated? */
994 if (res
->sr_slot
!= NULL
)
998 tbl
= &session
->fc_slot_table
;
1000 spin_lock(&tbl
->slot_tbl_lock
);
1001 /* The state manager will wait until the slot table is empty */
1002 if (nfs4_slot_tbl_draining(tbl
) && !args
->sa_privileged
)
1005 slot
= nfs4_alloc_slot(tbl
);
1007 if (slot
== ERR_PTR(-ENOMEM
))
1008 goto out_sleep_timeout
;
1011 spin_unlock(&tbl
->slot_tbl_lock
);
1013 nfs4_sequence_attach_slot(args
, res
, slot
);
1015 trace_nfs4_setup_sequence(session
, args
);
1017 nfs41_sequence_res_init(res
);
1018 rpc_call_start(task
);
1021 /* Try again in 1/4 second */
1022 if (args
->sa_privileged
)
1023 rpc_sleep_on_priority_timeout(&tbl
->slot_tbl_waitq
, task
,
1024 jiffies
+ (HZ
>> 2), RPC_PRIORITY_PRIVILEGED
);
1026 rpc_sleep_on_timeout(&tbl
->slot_tbl_waitq
, task
,
1027 NULL
, jiffies
+ (HZ
>> 2));
1028 spin_unlock(&tbl
->slot_tbl_lock
);
1031 if (args
->sa_privileged
)
1032 rpc_sleep_on_priority(&tbl
->slot_tbl_waitq
, task
,
1033 RPC_PRIORITY_PRIVILEGED
);
1035 rpc_sleep_on(&tbl
->slot_tbl_waitq
, task
, NULL
);
1036 spin_unlock(&tbl
->slot_tbl_lock
);
1039 EXPORT_SYMBOL_GPL(nfs4_setup_sequence
);
1041 static void nfs40_call_sync_prepare(struct rpc_task
*task
, void *calldata
)
1043 struct nfs4_call_sync_data
*data
= calldata
;
1044 nfs4_setup_sequence(data
->seq_server
->nfs_client
,
1045 data
->seq_args
, data
->seq_res
, task
);
1048 static void nfs40_call_sync_done(struct rpc_task
*task
, void *calldata
)
1050 struct nfs4_call_sync_data
*data
= calldata
;
1051 nfs4_sequence_done(task
, data
->seq_res
);
1054 static const struct rpc_call_ops nfs40_call_sync_ops
= {
1055 .rpc_call_prepare
= nfs40_call_sync_prepare
,
1056 .rpc_call_done
= nfs40_call_sync_done
,
1059 static int nfs4_call_sync_sequence(struct rpc_clnt
*clnt
,
1060 struct nfs_server
*server
,
1061 struct rpc_message
*msg
,
1062 struct nfs4_sequence_args
*args
,
1063 struct nfs4_sequence_res
*res
)
1066 struct rpc_task
*task
;
1067 struct nfs_client
*clp
= server
->nfs_client
;
1068 struct nfs4_call_sync_data data
= {
1069 .seq_server
= server
,
1073 struct rpc_task_setup task_setup
= {
1076 .callback_ops
= clp
->cl_mvops
->call_sync_ops
,
1077 .callback_data
= &data
1080 task
= rpc_run_task(&task_setup
);
1082 ret
= PTR_ERR(task
);
1084 ret
= task
->tk_status
;
1090 int nfs4_call_sync(struct rpc_clnt
*clnt
,
1091 struct nfs_server
*server
,
1092 struct rpc_message
*msg
,
1093 struct nfs4_sequence_args
*args
,
1094 struct nfs4_sequence_res
*res
,
1097 nfs4_init_sequence(args
, res
, cache_reply
, 0);
1098 return nfs4_call_sync_sequence(clnt
, server
, msg
, args
, res
);
1102 nfs4_inc_nlink_locked(struct inode
*inode
)
1104 NFS_I(inode
)->cache_validity
|= NFS_INO_INVALID_OTHER
;
1109 nfs4_dec_nlink_locked(struct inode
*inode
)
1111 NFS_I(inode
)->cache_validity
|= NFS_INO_INVALID_OTHER
;
1116 update_changeattr_locked(struct inode
*dir
, struct nfs4_change_info
*cinfo
,
1117 unsigned long timestamp
, unsigned long cache_validity
)
1119 struct nfs_inode
*nfsi
= NFS_I(dir
);
1121 nfsi
->cache_validity
|= NFS_INO_INVALID_CTIME
1122 | NFS_INO_INVALID_MTIME
1123 | NFS_INO_INVALID_DATA
1125 if (cinfo
->atomic
&& cinfo
->before
== inode_peek_iversion_raw(dir
)) {
1126 nfsi
->cache_validity
&= ~NFS_INO_REVAL_PAGECACHE
;
1127 nfsi
->attrtimeo_timestamp
= jiffies
;
1129 nfs_force_lookup_revalidate(dir
);
1130 if (cinfo
->before
!= inode_peek_iversion_raw(dir
))
1131 nfsi
->cache_validity
|= NFS_INO_INVALID_ACCESS
|
1132 NFS_INO_INVALID_ACL
;
1134 inode_set_iversion_raw(dir
, cinfo
->after
);
1135 nfsi
->read_cache_jiffies
= timestamp
;
1136 nfsi
->attr_gencount
= nfs_inc_attr_generation_counter();
1137 nfsi
->cache_validity
&= ~NFS_INO_INVALID_CHANGE
;
1138 nfs_fscache_invalidate(dir
);
1142 update_changeattr(struct inode
*dir
, struct nfs4_change_info
*cinfo
,
1143 unsigned long timestamp
, unsigned long cache_validity
)
1145 spin_lock(&dir
->i_lock
);
1146 update_changeattr_locked(dir
, cinfo
, timestamp
, cache_validity
);
1147 spin_unlock(&dir
->i_lock
);
1150 struct nfs4_open_createattrs
{
1151 struct nfs4_label
*label
;
1152 struct iattr
*sattr
;
1153 const __u32 verf
[2];
1156 static bool nfs4_clear_cap_atomic_open_v1(struct nfs_server
*server
,
1157 int err
, struct nfs4_exception
*exception
)
1161 if (!(server
->caps
& NFS_CAP_ATOMIC_OPEN_V1
))
1163 server
->caps
&= ~NFS_CAP_ATOMIC_OPEN_V1
;
1164 exception
->retry
= 1;
1169 nfs4_map_atomic_open_share(struct nfs_server
*server
,
1170 fmode_t fmode
, int openflags
)
1174 switch (fmode
& (FMODE_READ
| FMODE_WRITE
)) {
1176 res
= NFS4_SHARE_ACCESS_READ
;
1179 res
= NFS4_SHARE_ACCESS_WRITE
;
1181 case FMODE_READ
|FMODE_WRITE
:
1182 res
= NFS4_SHARE_ACCESS_BOTH
;
1184 if (!(server
->caps
& NFS_CAP_ATOMIC_OPEN_V1
))
1186 /* Want no delegation if we're using O_DIRECT */
1187 if (openflags
& O_DIRECT
)
1188 res
|= NFS4_SHARE_WANT_NO_DELEG
;
1193 static enum open_claim_type4
1194 nfs4_map_atomic_open_claim(struct nfs_server
*server
,
1195 enum open_claim_type4 claim
)
1197 if (server
->caps
& NFS_CAP_ATOMIC_OPEN_V1
)
1202 case NFS4_OPEN_CLAIM_FH
:
1203 return NFS4_OPEN_CLAIM_NULL
;
1204 case NFS4_OPEN_CLAIM_DELEG_CUR_FH
:
1205 return NFS4_OPEN_CLAIM_DELEGATE_CUR
;
1206 case NFS4_OPEN_CLAIM_DELEG_PREV_FH
:
1207 return NFS4_OPEN_CLAIM_DELEGATE_PREV
;
1211 static void nfs4_init_opendata_res(struct nfs4_opendata
*p
)
1213 p
->o_res
.f_attr
= &p
->f_attr
;
1214 p
->o_res
.f_label
= p
->f_label
;
1215 p
->o_res
.seqid
= p
->o_arg
.seqid
;
1216 p
->c_res
.seqid
= p
->c_arg
.seqid
;
1217 p
->o_res
.server
= p
->o_arg
.server
;
1218 p
->o_res
.access_request
= p
->o_arg
.access
;
1219 nfs_fattr_init(&p
->f_attr
);
1220 nfs_fattr_init_names(&p
->f_attr
, &p
->owner_name
, &p
->group_name
);
1223 static struct nfs4_opendata
*nfs4_opendata_alloc(struct dentry
*dentry
,
1224 struct nfs4_state_owner
*sp
, fmode_t fmode
, int flags
,
1225 const struct nfs4_open_createattrs
*c
,
1226 enum open_claim_type4 claim
,
1229 struct dentry
*parent
= dget_parent(dentry
);
1230 struct inode
*dir
= d_inode(parent
);
1231 struct nfs_server
*server
= NFS_SERVER(dir
);
1232 struct nfs_seqid
*(*alloc_seqid
)(struct nfs_seqid_counter
*, gfp_t
);
1233 struct nfs4_label
*label
= (c
!= NULL
) ? c
->label
: NULL
;
1234 struct nfs4_opendata
*p
;
1236 p
= kzalloc(sizeof(*p
), gfp_mask
);
1240 p
->f_label
= nfs4_label_alloc(server
, gfp_mask
);
1241 if (IS_ERR(p
->f_label
))
1244 p
->a_label
= nfs4_label_alloc(server
, gfp_mask
);
1245 if (IS_ERR(p
->a_label
))
1248 alloc_seqid
= server
->nfs_client
->cl_mvops
->alloc_seqid
;
1249 p
->o_arg
.seqid
= alloc_seqid(&sp
->so_seqid
, gfp_mask
);
1250 if (IS_ERR(p
->o_arg
.seqid
))
1251 goto err_free_label
;
1252 nfs_sb_active(dentry
->d_sb
);
1253 p
->dentry
= dget(dentry
);
1256 atomic_inc(&sp
->so_count
);
1257 p
->o_arg
.open_flags
= flags
;
1258 p
->o_arg
.fmode
= fmode
& (FMODE_READ
|FMODE_WRITE
);
1259 p
->o_arg
.claim
= nfs4_map_atomic_open_claim(server
, claim
);
1260 p
->o_arg
.share_access
= nfs4_map_atomic_open_share(server
,
1262 if (flags
& O_CREAT
) {
1263 p
->o_arg
.umask
= current_umask();
1264 p
->o_arg
.label
= nfs4_label_copy(p
->a_label
, label
);
1265 if (c
->sattr
!= NULL
&& c
->sattr
->ia_valid
!= 0) {
1266 p
->o_arg
.u
.attrs
= &p
->attrs
;
1267 memcpy(&p
->attrs
, c
->sattr
, sizeof(p
->attrs
));
1269 memcpy(p
->o_arg
.u
.verifier
.data
, c
->verf
,
1270 sizeof(p
->o_arg
.u
.verifier
.data
));
1273 /* don't put an ACCESS op in OPEN compound if O_EXCL, because ACCESS
1274 * will return permission denied for all bits until close */
1275 if (!(flags
& O_EXCL
)) {
1276 /* ask server to check for all possible rights as results
1278 switch (p
->o_arg
.claim
) {
1281 case NFS4_OPEN_CLAIM_NULL
:
1282 case NFS4_OPEN_CLAIM_FH
:
1283 p
->o_arg
.access
= NFS4_ACCESS_READ
|
1284 NFS4_ACCESS_MODIFY
|
1285 NFS4_ACCESS_EXTEND
|
1286 NFS4_ACCESS_EXECUTE
;
1289 p
->o_arg
.clientid
= server
->nfs_client
->cl_clientid
;
1290 p
->o_arg
.id
.create_time
= ktime_to_ns(sp
->so_seqid
.create_time
);
1291 p
->o_arg
.id
.uniquifier
= sp
->so_seqid
.owner_id
;
1292 p
->o_arg
.name
= &dentry
->d_name
;
1293 p
->o_arg
.server
= server
;
1294 p
->o_arg
.bitmask
= nfs4_bitmask(server
, label
);
1295 p
->o_arg
.open_bitmap
= &nfs4_fattr_bitmap
[0];
1296 switch (p
->o_arg
.claim
) {
1297 case NFS4_OPEN_CLAIM_NULL
:
1298 case NFS4_OPEN_CLAIM_DELEGATE_CUR
:
1299 case NFS4_OPEN_CLAIM_DELEGATE_PREV
:
1300 p
->o_arg
.fh
= NFS_FH(dir
);
1302 case NFS4_OPEN_CLAIM_PREVIOUS
:
1303 case NFS4_OPEN_CLAIM_FH
:
1304 case NFS4_OPEN_CLAIM_DELEG_CUR_FH
:
1305 case NFS4_OPEN_CLAIM_DELEG_PREV_FH
:
1306 p
->o_arg
.fh
= NFS_FH(d_inode(dentry
));
1308 p
->c_arg
.fh
= &p
->o_res
.fh
;
1309 p
->c_arg
.stateid
= &p
->o_res
.stateid
;
1310 p
->c_arg
.seqid
= p
->o_arg
.seqid
;
1311 nfs4_init_opendata_res(p
);
1312 kref_init(&p
->kref
);
1316 nfs4_label_free(p
->a_label
);
1318 nfs4_label_free(p
->f_label
);
1326 static void nfs4_opendata_free(struct kref
*kref
)
1328 struct nfs4_opendata
*p
= container_of(kref
,
1329 struct nfs4_opendata
, kref
);
1330 struct super_block
*sb
= p
->dentry
->d_sb
;
1332 nfs4_lgopen_release(p
->lgp
);
1333 nfs_free_seqid(p
->o_arg
.seqid
);
1334 nfs4_sequence_free_slot(&p
->o_res
.seq_res
);
1335 if (p
->state
!= NULL
)
1336 nfs4_put_open_state(p
->state
);
1337 nfs4_put_state_owner(p
->owner
);
1339 nfs4_label_free(p
->a_label
);
1340 nfs4_label_free(p
->f_label
);
1344 nfs_sb_deactive(sb
);
1345 nfs_fattr_free_names(&p
->f_attr
);
1346 kfree(p
->f_attr
.mdsthreshold
);
1350 static void nfs4_opendata_put(struct nfs4_opendata
*p
)
1353 kref_put(&p
->kref
, nfs4_opendata_free
);
1356 static bool nfs4_mode_match_open_stateid(struct nfs4_state
*state
,
1359 switch(fmode
& (FMODE_READ
|FMODE_WRITE
)) {
1360 case FMODE_READ
|FMODE_WRITE
:
1361 return state
->n_rdwr
!= 0;
1363 return state
->n_wronly
!= 0;
1365 return state
->n_rdonly
!= 0;
1371 static int can_open_cached(struct nfs4_state
*state
, fmode_t mode
,
1372 int open_mode
, enum open_claim_type4 claim
)
1376 if (open_mode
& (O_EXCL
|O_TRUNC
))
1379 case NFS4_OPEN_CLAIM_NULL
:
1380 case NFS4_OPEN_CLAIM_FH
:
1385 switch (mode
& (FMODE_READ
|FMODE_WRITE
)) {
1387 ret
|= test_bit(NFS_O_RDONLY_STATE
, &state
->flags
) != 0
1388 && state
->n_rdonly
!= 0;
1391 ret
|= test_bit(NFS_O_WRONLY_STATE
, &state
->flags
) != 0
1392 && state
->n_wronly
!= 0;
1394 case FMODE_READ
|FMODE_WRITE
:
1395 ret
|= test_bit(NFS_O_RDWR_STATE
, &state
->flags
) != 0
1396 && state
->n_rdwr
!= 0;
1402 static int can_open_delegated(struct nfs_delegation
*delegation
, fmode_t fmode
,
1403 enum open_claim_type4 claim
)
1405 if (delegation
== NULL
)
1407 if ((delegation
->type
& fmode
) != fmode
)
1409 if (test_bit(NFS_DELEGATION_RETURNING
, &delegation
->flags
))
1412 case NFS4_OPEN_CLAIM_NULL
:
1413 case NFS4_OPEN_CLAIM_FH
:
1415 case NFS4_OPEN_CLAIM_PREVIOUS
:
1416 if (!test_bit(NFS_DELEGATION_NEED_RECLAIM
, &delegation
->flags
))
1422 nfs_mark_delegation_referenced(delegation
);
1426 static void update_open_stateflags(struct nfs4_state
*state
, fmode_t fmode
)
1435 case FMODE_READ
|FMODE_WRITE
:
1438 nfs4_state_set_mode_locked(state
, state
->state
| fmode
);
1441 #ifdef CONFIG_NFS_V4_1
1442 static bool nfs_open_stateid_recover_openmode(struct nfs4_state
*state
)
1444 if (state
->n_rdonly
&& !test_bit(NFS_O_RDONLY_STATE
, &state
->flags
))
1446 if (state
->n_wronly
&& !test_bit(NFS_O_WRONLY_STATE
, &state
->flags
))
1448 if (state
->n_rdwr
&& !test_bit(NFS_O_RDWR_STATE
, &state
->flags
))
1452 #endif /* CONFIG_NFS_V4_1 */
1454 static void nfs_state_log_update_open_stateid(struct nfs4_state
*state
)
1456 if (test_and_clear_bit(NFS_STATE_CHANGE_WAIT
, &state
->flags
))
1457 wake_up_all(&state
->waitq
);
1460 static void nfs_state_log_out_of_order_open_stateid(struct nfs4_state
*state
,
1461 const nfs4_stateid
*stateid
)
1463 u32 state_seqid
= be32_to_cpu(state
->open_stateid
.seqid
);
1464 u32 stateid_seqid
= be32_to_cpu(stateid
->seqid
);
1466 if (stateid_seqid
== state_seqid
+ 1U ||
1467 (stateid_seqid
== 1U && state_seqid
== 0xffffffffU
))
1468 nfs_state_log_update_open_stateid(state
);
1470 set_bit(NFS_STATE_CHANGE_WAIT
, &state
->flags
);
1473 static void nfs_test_and_clear_all_open_stateid(struct nfs4_state
*state
)
1475 struct nfs_client
*clp
= state
->owner
->so_server
->nfs_client
;
1476 bool need_recover
= false;
1478 if (test_and_clear_bit(NFS_O_RDONLY_STATE
, &state
->flags
) && state
->n_rdonly
)
1479 need_recover
= true;
1480 if (test_and_clear_bit(NFS_O_WRONLY_STATE
, &state
->flags
) && state
->n_wronly
)
1481 need_recover
= true;
1482 if (test_and_clear_bit(NFS_O_RDWR_STATE
, &state
->flags
) && state
->n_rdwr
)
1483 need_recover
= true;
1485 nfs4_state_mark_reclaim_nograce(clp
, state
);
1489 * Check for whether or not the caller may update the open stateid
1490 * to the value passed in by stateid.
1492 * Note: This function relies heavily on the server implementing
1493 * RFC7530 Section 9.1.4.2, and RFC5661 Section 8.2.2
1495 * i.e. The stateid seqids have to be initialised to 1, and
1496 * are then incremented on every state transition.
1498 static bool nfs_need_update_open_stateid(struct nfs4_state
*state
,
1499 const nfs4_stateid
*stateid
)
1501 if (test_bit(NFS_OPEN_STATE
, &state
->flags
) == 0 ||
1502 !nfs4_stateid_match_other(stateid
, &state
->open_stateid
)) {
1503 if (stateid
->seqid
== cpu_to_be32(1))
1504 nfs_state_log_update_open_stateid(state
);
1506 set_bit(NFS_STATE_CHANGE_WAIT
, &state
->flags
);
1510 if (nfs4_stateid_is_newer(stateid
, &state
->open_stateid
)) {
1511 nfs_state_log_out_of_order_open_stateid(state
, stateid
);
1517 static void nfs_resync_open_stateid_locked(struct nfs4_state
*state
)
1519 if (!(state
->n_wronly
|| state
->n_rdonly
|| state
->n_rdwr
))
1521 if (state
->n_wronly
)
1522 set_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
1523 if (state
->n_rdonly
)
1524 set_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
1526 set_bit(NFS_O_RDWR_STATE
, &state
->flags
);
1527 set_bit(NFS_OPEN_STATE
, &state
->flags
);
1530 static void nfs_clear_open_stateid_locked(struct nfs4_state
*state
,
1531 nfs4_stateid
*stateid
, fmode_t fmode
)
1533 clear_bit(NFS_O_RDWR_STATE
, &state
->flags
);
1534 switch (fmode
& (FMODE_READ
|FMODE_WRITE
)) {
1536 clear_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
1539 clear_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
1542 clear_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
1543 clear_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
1544 clear_bit(NFS_OPEN_STATE
, &state
->flags
);
1546 if (stateid
== NULL
)
1548 /* Handle OPEN+OPEN_DOWNGRADE races */
1549 if (nfs4_stateid_match_other(stateid
, &state
->open_stateid
) &&
1550 !nfs4_stateid_is_newer(stateid
, &state
->open_stateid
)) {
1551 nfs_resync_open_stateid_locked(state
);
1554 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) == 0)
1555 nfs4_stateid_copy(&state
->stateid
, stateid
);
1556 nfs4_stateid_copy(&state
->open_stateid
, stateid
);
1557 trace_nfs4_open_stateid_update(state
->inode
, stateid
, 0);
1559 nfs_state_log_update_open_stateid(state
);
1562 static void nfs_clear_open_stateid(struct nfs4_state
*state
,
1563 nfs4_stateid
*arg_stateid
,
1564 nfs4_stateid
*stateid
, fmode_t fmode
)
1566 write_seqlock(&state
->seqlock
);
1567 /* Ignore, if the CLOSE argment doesn't match the current stateid */
1568 if (nfs4_state_match_open_stateid_other(state
, arg_stateid
))
1569 nfs_clear_open_stateid_locked(state
, stateid
, fmode
);
1570 write_sequnlock(&state
->seqlock
);
1571 if (test_bit(NFS_STATE_RECLAIM_NOGRACE
, &state
->flags
))
1572 nfs4_schedule_state_manager(state
->owner
->so_server
->nfs_client
);
1575 static void nfs_set_open_stateid_locked(struct nfs4_state
*state
,
1576 const nfs4_stateid
*stateid
, nfs4_stateid
*freeme
)
1577 __must_hold(&state
->owner
->so_lock
)
1578 __must_hold(&state
->seqlock
)
1586 if (!nfs_need_update_open_stateid(state
, stateid
))
1588 if (!test_bit(NFS_STATE_CHANGE_WAIT
, &state
->flags
))
1592 /* Rely on seqids for serialisation with NFSv4.0 */
1593 if (!nfs4_has_session(NFS_SERVER(state
->inode
)->nfs_client
))
1596 prepare_to_wait(&state
->waitq
, &wait
, TASK_KILLABLE
);
1598 * Ensure we process the state changes in the same order
1599 * in which the server processed them by delaying the
1600 * update of the stateid until we are in sequence.
1602 write_sequnlock(&state
->seqlock
);
1603 spin_unlock(&state
->owner
->so_lock
);
1605 trace_nfs4_open_stateid_update_wait(state
->inode
, stateid
, 0);
1606 if (!signal_pending(current
)) {
1607 if (schedule_timeout(5*HZ
) == 0)
1613 finish_wait(&state
->waitq
, &wait
);
1615 spin_lock(&state
->owner
->so_lock
);
1616 write_seqlock(&state
->seqlock
);
1619 if (test_bit(NFS_OPEN_STATE
, &state
->flags
) &&
1620 !nfs4_stateid_match_other(stateid
, &state
->open_stateid
)) {
1621 nfs4_stateid_copy(freeme
, &state
->open_stateid
);
1622 nfs_test_and_clear_all_open_stateid(state
);
1625 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) == 0)
1626 nfs4_stateid_copy(&state
->stateid
, stateid
);
1627 nfs4_stateid_copy(&state
->open_stateid
, stateid
);
1628 trace_nfs4_open_stateid_update(state
->inode
, stateid
, status
);
1629 nfs_state_log_update_open_stateid(state
);
1632 static void nfs_state_set_open_stateid(struct nfs4_state
*state
,
1633 const nfs4_stateid
*open_stateid
,
1635 nfs4_stateid
*freeme
)
1638 * Protect the call to nfs4_state_set_mode_locked and
1639 * serialise the stateid update
1641 write_seqlock(&state
->seqlock
);
1642 nfs_set_open_stateid_locked(state
, open_stateid
, freeme
);
1645 set_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
1648 set_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
1650 case FMODE_READ
|FMODE_WRITE
:
1651 set_bit(NFS_O_RDWR_STATE
, &state
->flags
);
1653 set_bit(NFS_OPEN_STATE
, &state
->flags
);
1654 write_sequnlock(&state
->seqlock
);
1657 static void nfs_state_set_delegation(struct nfs4_state
*state
,
1658 const nfs4_stateid
*deleg_stateid
,
1662 * Protect the call to nfs4_state_set_mode_locked and
1663 * serialise the stateid update
1665 write_seqlock(&state
->seqlock
);
1666 nfs4_stateid_copy(&state
->stateid
, deleg_stateid
);
1667 set_bit(NFS_DELEGATED_STATE
, &state
->flags
);
1668 write_sequnlock(&state
->seqlock
);
1671 static void nfs_state_clear_delegation(struct nfs4_state
*state
)
1673 write_seqlock(&state
->seqlock
);
1674 nfs4_stateid_copy(&state
->stateid
, &state
->open_stateid
);
1675 clear_bit(NFS_DELEGATED_STATE
, &state
->flags
);
1676 write_sequnlock(&state
->seqlock
);
1679 static int update_open_stateid(struct nfs4_state
*state
,
1680 const nfs4_stateid
*open_stateid
,
1681 const nfs4_stateid
*delegation
,
1684 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
1685 struct nfs_client
*clp
= server
->nfs_client
;
1686 struct nfs_inode
*nfsi
= NFS_I(state
->inode
);
1687 struct nfs_delegation
*deleg_cur
;
1688 nfs4_stateid freeme
= { };
1691 fmode
&= (FMODE_READ
|FMODE_WRITE
);
1694 spin_lock(&state
->owner
->so_lock
);
1695 if (open_stateid
!= NULL
) {
1696 nfs_state_set_open_stateid(state
, open_stateid
, fmode
, &freeme
);
1700 deleg_cur
= rcu_dereference(nfsi
->delegation
);
1701 if (deleg_cur
== NULL
)
1704 spin_lock(&deleg_cur
->lock
);
1705 if (rcu_dereference(nfsi
->delegation
) != deleg_cur
||
1706 test_bit(NFS_DELEGATION_RETURNING
, &deleg_cur
->flags
) ||
1707 (deleg_cur
->type
& fmode
) != fmode
)
1708 goto no_delegation_unlock
;
1710 if (delegation
== NULL
)
1711 delegation
= &deleg_cur
->stateid
;
1712 else if (!nfs4_stateid_match(&deleg_cur
->stateid
, delegation
))
1713 goto no_delegation_unlock
;
1715 nfs_mark_delegation_referenced(deleg_cur
);
1716 nfs_state_set_delegation(state
, &deleg_cur
->stateid
, fmode
);
1718 no_delegation_unlock
:
1719 spin_unlock(&deleg_cur
->lock
);
1722 update_open_stateflags(state
, fmode
);
1723 spin_unlock(&state
->owner
->so_lock
);
1726 if (test_bit(NFS_STATE_RECLAIM_NOGRACE
, &state
->flags
))
1727 nfs4_schedule_state_manager(clp
);
1728 if (freeme
.type
!= 0)
1729 nfs4_test_and_free_stateid(server
, &freeme
,
1730 state
->owner
->so_cred
);
1735 static bool nfs4_update_lock_stateid(struct nfs4_lock_state
*lsp
,
1736 const nfs4_stateid
*stateid
)
1738 struct nfs4_state
*state
= lsp
->ls_state
;
1741 spin_lock(&state
->state_lock
);
1742 if (!nfs4_stateid_match_other(stateid
, &lsp
->ls_stateid
))
1744 if (!nfs4_stateid_is_newer(stateid
, &lsp
->ls_stateid
))
1746 nfs4_stateid_copy(&lsp
->ls_stateid
, stateid
);
1749 spin_unlock(&state
->state_lock
);
1753 static void nfs4_return_incompatible_delegation(struct inode
*inode
, fmode_t fmode
)
1755 struct nfs_delegation
*delegation
;
1757 fmode
&= FMODE_READ
|FMODE_WRITE
;
1759 delegation
= rcu_dereference(NFS_I(inode
)->delegation
);
1760 if (delegation
== NULL
|| (delegation
->type
& fmode
) == fmode
) {
1765 nfs4_inode_return_delegation(inode
);
1768 static struct nfs4_state
*nfs4_try_open_cached(struct nfs4_opendata
*opendata
)
1770 struct nfs4_state
*state
= opendata
->state
;
1771 struct nfs_inode
*nfsi
= NFS_I(state
->inode
);
1772 struct nfs_delegation
*delegation
;
1773 int open_mode
= opendata
->o_arg
.open_flags
;
1774 fmode_t fmode
= opendata
->o_arg
.fmode
;
1775 enum open_claim_type4 claim
= opendata
->o_arg
.claim
;
1776 nfs4_stateid stateid
;
1780 spin_lock(&state
->owner
->so_lock
);
1781 if (can_open_cached(state
, fmode
, open_mode
, claim
)) {
1782 update_open_stateflags(state
, fmode
);
1783 spin_unlock(&state
->owner
->so_lock
);
1784 goto out_return_state
;
1786 spin_unlock(&state
->owner
->so_lock
);
1788 delegation
= rcu_dereference(nfsi
->delegation
);
1789 if (!can_open_delegated(delegation
, fmode
, claim
)) {
1793 /* Save the delegation */
1794 nfs4_stateid_copy(&stateid
, &delegation
->stateid
);
1796 nfs_release_seqid(opendata
->o_arg
.seqid
);
1797 if (!opendata
->is_recover
) {
1798 ret
= nfs_may_open(state
->inode
, state
->owner
->so_cred
, open_mode
);
1804 /* Try to update the stateid using the delegation */
1805 if (update_open_stateid(state
, NULL
, &stateid
, fmode
))
1806 goto out_return_state
;
1809 return ERR_PTR(ret
);
1811 refcount_inc(&state
->count
);
1816 nfs4_opendata_check_deleg(struct nfs4_opendata
*data
, struct nfs4_state
*state
)
1818 struct nfs_client
*clp
= NFS_SERVER(state
->inode
)->nfs_client
;
1819 struct nfs_delegation
*delegation
;
1820 int delegation_flags
= 0;
1823 delegation
= rcu_dereference(NFS_I(state
->inode
)->delegation
);
1825 delegation_flags
= delegation
->flags
;
1827 switch (data
->o_arg
.claim
) {
1830 case NFS4_OPEN_CLAIM_DELEGATE_CUR
:
1831 case NFS4_OPEN_CLAIM_DELEG_CUR_FH
:
1832 pr_err_ratelimited("NFS: Broken NFSv4 server %s is "
1833 "returning a delegation for "
1834 "OPEN(CLAIM_DELEGATE_CUR)\n",
1838 if ((delegation_flags
& 1UL<<NFS_DELEGATION_NEED_RECLAIM
) == 0)
1839 nfs_inode_set_delegation(state
->inode
,
1840 data
->owner
->so_cred
,
1841 data
->o_res
.delegation_type
,
1842 &data
->o_res
.delegation
,
1843 data
->o_res
.pagemod_limit
);
1845 nfs_inode_reclaim_delegation(state
->inode
,
1846 data
->owner
->so_cred
,
1847 data
->o_res
.delegation_type
,
1848 &data
->o_res
.delegation
,
1849 data
->o_res
.pagemod_limit
);
1851 if (data
->o_res
.do_recall
)
1852 nfs_async_inode_return_delegation(state
->inode
,
1853 &data
->o_res
.delegation
);
1857 * Check the inode attributes against the CLAIM_PREVIOUS returned attributes
1858 * and update the nfs4_state.
1860 static struct nfs4_state
*
1861 _nfs4_opendata_reclaim_to_nfs4_state(struct nfs4_opendata
*data
)
1863 struct inode
*inode
= data
->state
->inode
;
1864 struct nfs4_state
*state
= data
->state
;
1867 if (!data
->rpc_done
) {
1868 if (data
->rpc_status
)
1869 return ERR_PTR(data
->rpc_status
);
1870 /* cached opens have already been processed */
1874 ret
= nfs_refresh_inode(inode
, &data
->f_attr
);
1876 return ERR_PTR(ret
);
1878 if (data
->o_res
.delegation_type
!= 0)
1879 nfs4_opendata_check_deleg(data
, state
);
1881 update_open_stateid(state
, &data
->o_res
.stateid
, NULL
,
1883 refcount_inc(&state
->count
);
1888 static struct inode
*
1889 nfs4_opendata_get_inode(struct nfs4_opendata
*data
)
1891 struct inode
*inode
;
1893 switch (data
->o_arg
.claim
) {
1894 case NFS4_OPEN_CLAIM_NULL
:
1895 case NFS4_OPEN_CLAIM_DELEGATE_CUR
:
1896 case NFS4_OPEN_CLAIM_DELEGATE_PREV
:
1897 if (!(data
->f_attr
.valid
& NFS_ATTR_FATTR
))
1898 return ERR_PTR(-EAGAIN
);
1899 inode
= nfs_fhget(data
->dir
->d_sb
, &data
->o_res
.fh
,
1900 &data
->f_attr
, data
->f_label
);
1903 inode
= d_inode(data
->dentry
);
1905 nfs_refresh_inode(inode
, &data
->f_attr
);
1910 static struct nfs4_state
*
1911 nfs4_opendata_find_nfs4_state(struct nfs4_opendata
*data
)
1913 struct nfs4_state
*state
;
1914 struct inode
*inode
;
1916 inode
= nfs4_opendata_get_inode(data
);
1918 return ERR_CAST(inode
);
1919 if (data
->state
!= NULL
&& data
->state
->inode
== inode
) {
1920 state
= data
->state
;
1921 refcount_inc(&state
->count
);
1923 state
= nfs4_get_open_state(inode
, data
->owner
);
1926 state
= ERR_PTR(-ENOMEM
);
1930 static struct nfs4_state
*
1931 _nfs4_opendata_to_nfs4_state(struct nfs4_opendata
*data
)
1933 struct nfs4_state
*state
;
1935 if (!data
->rpc_done
) {
1936 state
= nfs4_try_open_cached(data
);
1937 trace_nfs4_cached_open(data
->state
);
1941 state
= nfs4_opendata_find_nfs4_state(data
);
1945 if (data
->o_res
.delegation_type
!= 0)
1946 nfs4_opendata_check_deleg(data
, state
);
1947 update_open_stateid(state
, &data
->o_res
.stateid
, NULL
,
1950 nfs_release_seqid(data
->o_arg
.seqid
);
1954 static struct nfs4_state
*
1955 nfs4_opendata_to_nfs4_state(struct nfs4_opendata
*data
)
1957 struct nfs4_state
*ret
;
1959 if (data
->o_arg
.claim
== NFS4_OPEN_CLAIM_PREVIOUS
)
1960 ret
=_nfs4_opendata_reclaim_to_nfs4_state(data
);
1962 ret
= _nfs4_opendata_to_nfs4_state(data
);
1963 nfs4_sequence_free_slot(&data
->o_res
.seq_res
);
1967 static struct nfs_open_context
*
1968 nfs4_state_find_open_context_mode(struct nfs4_state
*state
, fmode_t mode
)
1970 struct nfs_inode
*nfsi
= NFS_I(state
->inode
);
1971 struct nfs_open_context
*ctx
;
1974 list_for_each_entry_rcu(ctx
, &nfsi
->open_files
, list
) {
1975 if (ctx
->state
!= state
)
1977 if ((ctx
->mode
& mode
) != mode
)
1979 if (!get_nfs_open_context(ctx
))
1985 return ERR_PTR(-ENOENT
);
1988 static struct nfs_open_context
*
1989 nfs4_state_find_open_context(struct nfs4_state
*state
)
1991 struct nfs_open_context
*ctx
;
1993 ctx
= nfs4_state_find_open_context_mode(state
, FMODE_READ
|FMODE_WRITE
);
1996 ctx
= nfs4_state_find_open_context_mode(state
, FMODE_WRITE
);
1999 return nfs4_state_find_open_context_mode(state
, FMODE_READ
);
2002 static struct nfs4_opendata
*nfs4_open_recoverdata_alloc(struct nfs_open_context
*ctx
,
2003 struct nfs4_state
*state
, enum open_claim_type4 claim
)
2005 struct nfs4_opendata
*opendata
;
2007 opendata
= nfs4_opendata_alloc(ctx
->dentry
, state
->owner
, 0, 0,
2008 NULL
, claim
, GFP_NOFS
);
2009 if (opendata
== NULL
)
2010 return ERR_PTR(-ENOMEM
);
2011 opendata
->state
= state
;
2012 refcount_inc(&state
->count
);
2016 static int nfs4_open_recover_helper(struct nfs4_opendata
*opendata
,
2019 struct nfs4_state
*newstate
;
2022 if (!nfs4_mode_match_open_stateid(opendata
->state
, fmode
))
2024 opendata
->o_arg
.open_flags
= 0;
2025 opendata
->o_arg
.fmode
= fmode
;
2026 opendata
->o_arg
.share_access
= nfs4_map_atomic_open_share(
2027 NFS_SB(opendata
->dentry
->d_sb
),
2029 memset(&opendata
->o_res
, 0, sizeof(opendata
->o_res
));
2030 memset(&opendata
->c_res
, 0, sizeof(opendata
->c_res
));
2031 nfs4_init_opendata_res(opendata
);
2032 ret
= _nfs4_recover_proc_open(opendata
);
2035 newstate
= nfs4_opendata_to_nfs4_state(opendata
);
2036 if (IS_ERR(newstate
))
2037 return PTR_ERR(newstate
);
2038 if (newstate
!= opendata
->state
)
2040 nfs4_close_state(newstate
, fmode
);
2044 static int nfs4_open_recover(struct nfs4_opendata
*opendata
, struct nfs4_state
*state
)
2048 /* Don't trigger recovery in nfs_test_and_clear_all_open_stateid */
2049 clear_bit(NFS_O_RDWR_STATE
, &state
->flags
);
2050 clear_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
2051 clear_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
2052 /* memory barrier prior to reading state->n_* */
2053 clear_bit(NFS_DELEGATED_STATE
, &state
->flags
);
2054 clear_bit(NFS_OPEN_STATE
, &state
->flags
);
2056 ret
= nfs4_open_recover_helper(opendata
, FMODE_READ
|FMODE_WRITE
);
2059 ret
= nfs4_open_recover_helper(opendata
, FMODE_WRITE
);
2062 ret
= nfs4_open_recover_helper(opendata
, FMODE_READ
);
2066 * We may have performed cached opens for all three recoveries.
2067 * Check if we need to update the current stateid.
2069 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) == 0 &&
2070 !nfs4_stateid_match(&state
->stateid
, &state
->open_stateid
)) {
2071 write_seqlock(&state
->seqlock
);
2072 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) == 0)
2073 nfs4_stateid_copy(&state
->stateid
, &state
->open_stateid
);
2074 write_sequnlock(&state
->seqlock
);
2081 * reclaim state on the server after a reboot.
2083 static int _nfs4_do_open_reclaim(struct nfs_open_context
*ctx
, struct nfs4_state
*state
)
2085 struct nfs_delegation
*delegation
;
2086 struct nfs4_opendata
*opendata
;
2087 fmode_t delegation_type
= 0;
2090 opendata
= nfs4_open_recoverdata_alloc(ctx
, state
,
2091 NFS4_OPEN_CLAIM_PREVIOUS
);
2092 if (IS_ERR(opendata
))
2093 return PTR_ERR(opendata
);
2095 delegation
= rcu_dereference(NFS_I(state
->inode
)->delegation
);
2096 if (delegation
!= NULL
&& test_bit(NFS_DELEGATION_NEED_RECLAIM
, &delegation
->flags
) != 0)
2097 delegation_type
= delegation
->type
;
2099 opendata
->o_arg
.u
.delegation_type
= delegation_type
;
2100 status
= nfs4_open_recover(opendata
, state
);
2101 nfs4_opendata_put(opendata
);
2105 static int nfs4_do_open_reclaim(struct nfs_open_context
*ctx
, struct nfs4_state
*state
)
2107 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
2108 struct nfs4_exception exception
= { };
2111 err
= _nfs4_do_open_reclaim(ctx
, state
);
2112 trace_nfs4_open_reclaim(ctx
, 0, err
);
2113 if (nfs4_clear_cap_atomic_open_v1(server
, err
, &exception
))
2115 if (err
!= -NFS4ERR_DELAY
)
2117 nfs4_handle_exception(server
, err
, &exception
);
2118 } while (exception
.retry
);
2122 static int nfs4_open_reclaim(struct nfs4_state_owner
*sp
, struct nfs4_state
*state
)
2124 struct nfs_open_context
*ctx
;
2127 ctx
= nfs4_state_find_open_context(state
);
2130 ret
= nfs4_do_open_reclaim(ctx
, state
);
2131 put_nfs_open_context(ctx
);
2135 static int nfs4_handle_delegation_recall_error(struct nfs_server
*server
, struct nfs4_state
*state
, const nfs4_stateid
*stateid
, struct file_lock
*fl
, int err
)
2139 printk(KERN_ERR
"NFS: %s: unhandled error "
2140 "%d.\n", __func__
, err
);
2146 case -NFS4ERR_BADSESSION
:
2147 case -NFS4ERR_BADSLOT
:
2148 case -NFS4ERR_BAD_HIGH_SLOT
:
2149 case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION
:
2150 case -NFS4ERR_DEADSESSION
:
2151 set_bit(NFS_DELEGATED_STATE
, &state
->flags
);
2152 nfs4_schedule_session_recovery(server
->nfs_client
->cl_session
, err
);
2154 case -NFS4ERR_STALE_CLIENTID
:
2155 case -NFS4ERR_STALE_STATEID
:
2156 set_bit(NFS_DELEGATED_STATE
, &state
->flags
);
2157 /* Don't recall a delegation if it was lost */
2158 nfs4_schedule_lease_recovery(server
->nfs_client
);
2160 case -NFS4ERR_MOVED
:
2161 nfs4_schedule_migration_recovery(server
);
2163 case -NFS4ERR_LEASE_MOVED
:
2164 nfs4_schedule_lease_moved_recovery(server
->nfs_client
);
2166 case -NFS4ERR_DELEG_REVOKED
:
2167 case -NFS4ERR_ADMIN_REVOKED
:
2168 case -NFS4ERR_EXPIRED
:
2169 case -NFS4ERR_BAD_STATEID
:
2170 case -NFS4ERR_OPENMODE
:
2171 nfs_inode_find_state_and_recover(state
->inode
,
2173 nfs4_schedule_stateid_recovery(server
, state
);
2175 case -NFS4ERR_DELAY
:
2176 case -NFS4ERR_GRACE
:
2177 set_bit(NFS_DELEGATED_STATE
, &state
->flags
);
2181 case -NFS4ERR_DENIED
:
2183 struct nfs4_lock_state
*lsp
= fl
->fl_u
.nfs4_fl
.owner
;
2185 set_bit(NFS_LOCK_LOST
, &lsp
->ls_flags
);
2192 int nfs4_open_delegation_recall(struct nfs_open_context
*ctx
,
2193 struct nfs4_state
*state
, const nfs4_stateid
*stateid
,
2196 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
2197 struct nfs4_opendata
*opendata
;
2200 opendata
= nfs4_open_recoverdata_alloc(ctx
, state
,
2201 NFS4_OPEN_CLAIM_DELEG_CUR_FH
);
2202 if (IS_ERR(opendata
))
2203 return PTR_ERR(opendata
);
2204 nfs4_stateid_copy(&opendata
->o_arg
.u
.delegation
, stateid
);
2205 nfs_state_clear_delegation(state
);
2206 switch (type
& (FMODE_READ
|FMODE_WRITE
)) {
2207 case FMODE_READ
|FMODE_WRITE
:
2209 err
= nfs4_open_recover_helper(opendata
, FMODE_READ
|FMODE_WRITE
);
2212 err
= nfs4_open_recover_helper(opendata
, FMODE_WRITE
);
2217 err
= nfs4_open_recover_helper(opendata
, FMODE_READ
);
2219 nfs4_opendata_put(opendata
);
2220 return nfs4_handle_delegation_recall_error(server
, state
, stateid
, NULL
, err
);
2223 static void nfs4_open_confirm_prepare(struct rpc_task
*task
, void *calldata
)
2225 struct nfs4_opendata
*data
= calldata
;
2227 nfs4_setup_sequence(data
->o_arg
.server
->nfs_client
,
2228 &data
->c_arg
.seq_args
, &data
->c_res
.seq_res
, task
);
2231 static void nfs4_open_confirm_done(struct rpc_task
*task
, void *calldata
)
2233 struct nfs4_opendata
*data
= calldata
;
2235 nfs40_sequence_done(task
, &data
->c_res
.seq_res
);
2237 data
->rpc_status
= task
->tk_status
;
2238 if (data
->rpc_status
== 0) {
2239 nfs4_stateid_copy(&data
->o_res
.stateid
, &data
->c_res
.stateid
);
2240 nfs_confirm_seqid(&data
->owner
->so_seqid
, 0);
2241 renew_lease(data
->o_res
.server
, data
->timestamp
);
2242 data
->rpc_done
= true;
2246 static void nfs4_open_confirm_release(void *calldata
)
2248 struct nfs4_opendata
*data
= calldata
;
2249 struct nfs4_state
*state
= NULL
;
2251 /* If this request hasn't been cancelled, do nothing */
2252 if (!data
->cancelled
)
2254 /* In case of error, no cleanup! */
2255 if (!data
->rpc_done
)
2257 state
= nfs4_opendata_to_nfs4_state(data
);
2259 nfs4_close_state(state
, data
->o_arg
.fmode
);
2261 nfs4_opendata_put(data
);
2264 static const struct rpc_call_ops nfs4_open_confirm_ops
= {
2265 .rpc_call_prepare
= nfs4_open_confirm_prepare
,
2266 .rpc_call_done
= nfs4_open_confirm_done
,
2267 .rpc_release
= nfs4_open_confirm_release
,
2271 * Note: On error, nfs4_proc_open_confirm will free the struct nfs4_opendata
2273 static int _nfs4_proc_open_confirm(struct nfs4_opendata
*data
)
2275 struct nfs_server
*server
= NFS_SERVER(d_inode(data
->dir
));
2276 struct rpc_task
*task
;
2277 struct rpc_message msg
= {
2278 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_OPEN_CONFIRM
],
2279 .rpc_argp
= &data
->c_arg
,
2280 .rpc_resp
= &data
->c_res
,
2281 .rpc_cred
= data
->owner
->so_cred
,
2283 struct rpc_task_setup task_setup_data
= {
2284 .rpc_client
= server
->client
,
2285 .rpc_message
= &msg
,
2286 .callback_ops
= &nfs4_open_confirm_ops
,
2287 .callback_data
= data
,
2288 .workqueue
= nfsiod_workqueue
,
2289 .flags
= RPC_TASK_ASYNC
,
2293 nfs4_init_sequence(&data
->c_arg
.seq_args
, &data
->c_res
.seq_res
, 1,
2295 kref_get(&data
->kref
);
2296 data
->rpc_done
= false;
2297 data
->rpc_status
= 0;
2298 data
->timestamp
= jiffies
;
2299 task
= rpc_run_task(&task_setup_data
);
2301 return PTR_ERR(task
);
2302 status
= rpc_wait_for_completion_task(task
);
2304 data
->cancelled
= true;
2307 status
= data
->rpc_status
;
2312 static void nfs4_open_prepare(struct rpc_task
*task
, void *calldata
)
2314 struct nfs4_opendata
*data
= calldata
;
2315 struct nfs4_state_owner
*sp
= data
->owner
;
2316 struct nfs_client
*clp
= sp
->so_server
->nfs_client
;
2317 enum open_claim_type4 claim
= data
->o_arg
.claim
;
2319 if (nfs_wait_on_sequence(data
->o_arg
.seqid
, task
) != 0)
2322 * Check if we still need to send an OPEN call, or if we can use
2323 * a delegation instead.
2325 if (data
->state
!= NULL
) {
2326 struct nfs_delegation
*delegation
;
2328 if (can_open_cached(data
->state
, data
->o_arg
.fmode
,
2329 data
->o_arg
.open_flags
, claim
))
2332 delegation
= rcu_dereference(NFS_I(data
->state
->inode
)->delegation
);
2333 if (can_open_delegated(delegation
, data
->o_arg
.fmode
, claim
))
2334 goto unlock_no_action
;
2337 /* Update client id. */
2338 data
->o_arg
.clientid
= clp
->cl_clientid
;
2342 case NFS4_OPEN_CLAIM_PREVIOUS
:
2343 case NFS4_OPEN_CLAIM_DELEG_CUR_FH
:
2344 case NFS4_OPEN_CLAIM_DELEG_PREV_FH
:
2345 data
->o_arg
.open_bitmap
= &nfs4_open_noattr_bitmap
[0];
2347 case NFS4_OPEN_CLAIM_FH
:
2348 task
->tk_msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_OPEN_NOATTR
];
2350 data
->timestamp
= jiffies
;
2351 if (nfs4_setup_sequence(data
->o_arg
.server
->nfs_client
,
2352 &data
->o_arg
.seq_args
,
2353 &data
->o_res
.seq_res
,
2355 nfs_release_seqid(data
->o_arg
.seqid
);
2357 /* Set the create mode (note dependency on the session type) */
2358 data
->o_arg
.createmode
= NFS4_CREATE_UNCHECKED
;
2359 if (data
->o_arg
.open_flags
& O_EXCL
) {
2360 data
->o_arg
.createmode
= NFS4_CREATE_EXCLUSIVE
;
2361 if (nfs4_has_persistent_session(clp
))
2362 data
->o_arg
.createmode
= NFS4_CREATE_GUARDED
;
2363 else if (clp
->cl_mvops
->minor_version
> 0)
2364 data
->o_arg
.createmode
= NFS4_CREATE_EXCLUSIVE4_1
;
2368 trace_nfs4_cached_open(data
->state
);
2371 task
->tk_action
= NULL
;
2373 nfs4_sequence_done(task
, &data
->o_res
.seq_res
);
2376 static void nfs4_open_done(struct rpc_task
*task
, void *calldata
)
2378 struct nfs4_opendata
*data
= calldata
;
2380 data
->rpc_status
= task
->tk_status
;
2382 if (!nfs4_sequence_process(task
, &data
->o_res
.seq_res
))
2385 if (task
->tk_status
== 0) {
2386 if (data
->o_res
.f_attr
->valid
& NFS_ATTR_FATTR_TYPE
) {
2387 switch (data
->o_res
.f_attr
->mode
& S_IFMT
) {
2391 data
->rpc_status
= -ELOOP
;
2394 data
->rpc_status
= -EISDIR
;
2397 data
->rpc_status
= -ENOTDIR
;
2400 renew_lease(data
->o_res
.server
, data
->timestamp
);
2401 if (!(data
->o_res
.rflags
& NFS4_OPEN_RESULT_CONFIRM
))
2402 nfs_confirm_seqid(&data
->owner
->so_seqid
, 0);
2404 data
->rpc_done
= true;
2407 static void nfs4_open_release(void *calldata
)
2409 struct nfs4_opendata
*data
= calldata
;
2410 struct nfs4_state
*state
= NULL
;
2412 /* If this request hasn't been cancelled, do nothing */
2413 if (!data
->cancelled
)
2415 /* In case of error, no cleanup! */
2416 if (data
->rpc_status
!= 0 || !data
->rpc_done
)
2418 /* In case we need an open_confirm, no cleanup! */
2419 if (data
->o_res
.rflags
& NFS4_OPEN_RESULT_CONFIRM
)
2421 state
= nfs4_opendata_to_nfs4_state(data
);
2423 nfs4_close_state(state
, data
->o_arg
.fmode
);
2425 nfs4_opendata_put(data
);
2428 static const struct rpc_call_ops nfs4_open_ops
= {
2429 .rpc_call_prepare
= nfs4_open_prepare
,
2430 .rpc_call_done
= nfs4_open_done
,
2431 .rpc_release
= nfs4_open_release
,
2434 static int nfs4_run_open_task(struct nfs4_opendata
*data
,
2435 struct nfs_open_context
*ctx
)
2437 struct inode
*dir
= d_inode(data
->dir
);
2438 struct nfs_server
*server
= NFS_SERVER(dir
);
2439 struct nfs_openargs
*o_arg
= &data
->o_arg
;
2440 struct nfs_openres
*o_res
= &data
->o_res
;
2441 struct rpc_task
*task
;
2442 struct rpc_message msg
= {
2443 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_OPEN
],
2446 .rpc_cred
= data
->owner
->so_cred
,
2448 struct rpc_task_setup task_setup_data
= {
2449 .rpc_client
= server
->client
,
2450 .rpc_message
= &msg
,
2451 .callback_ops
= &nfs4_open_ops
,
2452 .callback_data
= data
,
2453 .workqueue
= nfsiod_workqueue
,
2454 .flags
= RPC_TASK_ASYNC
,
2458 kref_get(&data
->kref
);
2459 data
->rpc_done
= false;
2460 data
->rpc_status
= 0;
2461 data
->cancelled
= false;
2462 data
->is_recover
= false;
2464 nfs4_init_sequence(&o_arg
->seq_args
, &o_res
->seq_res
, 1, 1);
2465 data
->is_recover
= true;
2467 nfs4_init_sequence(&o_arg
->seq_args
, &o_res
->seq_res
, 1, 0);
2468 pnfs_lgopen_prepare(data
, ctx
);
2470 task
= rpc_run_task(&task_setup_data
);
2472 return PTR_ERR(task
);
2473 status
= rpc_wait_for_completion_task(task
);
2475 data
->cancelled
= true;
2478 status
= data
->rpc_status
;
2484 static int _nfs4_recover_proc_open(struct nfs4_opendata
*data
)
2486 struct inode
*dir
= d_inode(data
->dir
);
2487 struct nfs_openres
*o_res
= &data
->o_res
;
2490 status
= nfs4_run_open_task(data
, NULL
);
2491 if (status
!= 0 || !data
->rpc_done
)
2494 nfs_fattr_map_and_free_names(NFS_SERVER(dir
), &data
->f_attr
);
2496 if (o_res
->rflags
& NFS4_OPEN_RESULT_CONFIRM
)
2497 status
= _nfs4_proc_open_confirm(data
);
2503 * Additional permission checks in order to distinguish between an
2504 * open for read, and an open for execute. This works around the
2505 * fact that NFSv4 OPEN treats read and execute permissions as being
2507 * Note that in the non-execute case, we want to turn off permission
2508 * checking if we just created a new file (POSIX open() semantics).
2510 static int nfs4_opendata_access(const struct cred
*cred
,
2511 struct nfs4_opendata
*opendata
,
2512 struct nfs4_state
*state
, fmode_t fmode
,
2515 struct nfs_access_entry cache
;
2518 /* access call failed or for some reason the server doesn't
2519 * support any access modes -- defer access call until later */
2520 if (opendata
->o_res
.access_supported
== 0)
2525 * Use openflags to check for exec, because fmode won't
2526 * always have FMODE_EXEC set when file open for exec.
2528 if (openflags
& __FMODE_EXEC
) {
2529 /* ONLY check for exec rights */
2530 if (S_ISDIR(state
->inode
->i_mode
))
2531 mask
= NFS4_ACCESS_LOOKUP
;
2533 mask
= NFS4_ACCESS_EXECUTE
;
2534 } else if ((fmode
& FMODE_READ
) && !opendata
->file_created
)
2535 mask
= NFS4_ACCESS_READ
;
2538 nfs_access_set_mask(&cache
, opendata
->o_res
.access_result
);
2539 nfs_access_add_cache(state
->inode
, &cache
);
2541 flags
= NFS4_ACCESS_READ
| NFS4_ACCESS_EXECUTE
| NFS4_ACCESS_LOOKUP
;
2542 if ((mask
& ~cache
.mask
& flags
) == 0)
2549 * Note: On error, nfs4_proc_open will free the struct nfs4_opendata
2551 static int _nfs4_proc_open(struct nfs4_opendata
*data
,
2552 struct nfs_open_context
*ctx
)
2554 struct inode
*dir
= d_inode(data
->dir
);
2555 struct nfs_server
*server
= NFS_SERVER(dir
);
2556 struct nfs_openargs
*o_arg
= &data
->o_arg
;
2557 struct nfs_openres
*o_res
= &data
->o_res
;
2560 status
= nfs4_run_open_task(data
, ctx
);
2561 if (!data
->rpc_done
)
2564 if (status
== -NFS4ERR_BADNAME
&&
2565 !(o_arg
->open_flags
& O_CREAT
))
2570 nfs_fattr_map_and_free_names(server
, &data
->f_attr
);
2572 if (o_arg
->open_flags
& O_CREAT
) {
2573 if (o_arg
->open_flags
& O_EXCL
)
2574 data
->file_created
= true;
2575 else if (o_res
->cinfo
.before
!= o_res
->cinfo
.after
)
2576 data
->file_created
= true;
2577 if (data
->file_created
||
2578 inode_peek_iversion_raw(dir
) != o_res
->cinfo
.after
)
2579 update_changeattr(dir
, &o_res
->cinfo
,
2580 o_res
->f_attr
->time_start
, 0);
2582 if ((o_res
->rflags
& NFS4_OPEN_RESULT_LOCKTYPE_POSIX
) == 0)
2583 server
->caps
&= ~NFS_CAP_POSIX_LOCK
;
2584 if(o_res
->rflags
& NFS4_OPEN_RESULT_CONFIRM
) {
2585 status
= _nfs4_proc_open_confirm(data
);
2589 if (!(o_res
->f_attr
->valid
& NFS_ATTR_FATTR
)) {
2590 nfs4_sequence_free_slot(&o_res
->seq_res
);
2591 nfs4_proc_getattr(server
, &o_res
->fh
, o_res
->f_attr
,
2592 o_res
->f_label
, NULL
);
2599 * reclaim state on the server after a network partition.
2600 * Assumes caller holds the appropriate lock
2602 static int _nfs4_open_expired(struct nfs_open_context
*ctx
, struct nfs4_state
*state
)
2604 struct nfs4_opendata
*opendata
;
2607 opendata
= nfs4_open_recoverdata_alloc(ctx
, state
,
2608 NFS4_OPEN_CLAIM_FH
);
2609 if (IS_ERR(opendata
))
2610 return PTR_ERR(opendata
);
2611 ret
= nfs4_open_recover(opendata
, state
);
2613 d_drop(ctx
->dentry
);
2614 nfs4_opendata_put(opendata
);
2618 static int nfs4_do_open_expired(struct nfs_open_context
*ctx
, struct nfs4_state
*state
)
2620 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
2621 struct nfs4_exception exception
= { };
2625 err
= _nfs4_open_expired(ctx
, state
);
2626 trace_nfs4_open_expired(ctx
, 0, err
);
2627 if (nfs4_clear_cap_atomic_open_v1(server
, err
, &exception
))
2632 case -NFS4ERR_GRACE
:
2633 case -NFS4ERR_DELAY
:
2634 nfs4_handle_exception(server
, err
, &exception
);
2637 } while (exception
.retry
);
2642 static int nfs4_open_expired(struct nfs4_state_owner
*sp
, struct nfs4_state
*state
)
2644 struct nfs_open_context
*ctx
;
2647 ctx
= nfs4_state_find_open_context(state
);
2650 ret
= nfs4_do_open_expired(ctx
, state
);
2651 put_nfs_open_context(ctx
);
2655 static void nfs_finish_clear_delegation_stateid(struct nfs4_state
*state
,
2656 const nfs4_stateid
*stateid
)
2658 nfs_remove_bad_delegation(state
->inode
, stateid
);
2659 nfs_state_clear_delegation(state
);
2662 static void nfs40_clear_delegation_stateid(struct nfs4_state
*state
)
2664 if (rcu_access_pointer(NFS_I(state
->inode
)->delegation
) != NULL
)
2665 nfs_finish_clear_delegation_stateid(state
, NULL
);
2668 static int nfs40_open_expired(struct nfs4_state_owner
*sp
, struct nfs4_state
*state
)
2670 /* NFSv4.0 doesn't allow for delegation recovery on open expire */
2671 nfs40_clear_delegation_stateid(state
);
2672 return nfs4_open_expired(sp
, state
);
2675 static int nfs40_test_and_free_expired_stateid(struct nfs_server
*server
,
2676 nfs4_stateid
*stateid
,
2677 const struct cred
*cred
)
2679 return -NFS4ERR_BAD_STATEID
;
2682 #if defined(CONFIG_NFS_V4_1)
2683 static int nfs41_test_and_free_expired_stateid(struct nfs_server
*server
,
2684 nfs4_stateid
*stateid
,
2685 const struct cred
*cred
)
2689 switch (stateid
->type
) {
2692 case NFS4_INVALID_STATEID_TYPE
:
2693 case NFS4_SPECIAL_STATEID_TYPE
:
2694 return -NFS4ERR_BAD_STATEID
;
2695 case NFS4_REVOKED_STATEID_TYPE
:
2699 status
= nfs41_test_stateid(server
, stateid
, cred
);
2701 case -NFS4ERR_EXPIRED
:
2702 case -NFS4ERR_ADMIN_REVOKED
:
2703 case -NFS4ERR_DELEG_REVOKED
:
2709 /* Ack the revoked state to the server */
2710 nfs41_free_stateid(server
, stateid
, cred
, true);
2711 return -NFS4ERR_EXPIRED
;
2714 static void nfs41_check_delegation_stateid(struct nfs4_state
*state
)
2716 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
2717 nfs4_stateid stateid
;
2718 struct nfs_delegation
*delegation
;
2719 const struct cred
*cred
= NULL
;
2722 /* Get the delegation credential for use by test/free_stateid */
2724 delegation
= rcu_dereference(NFS_I(state
->inode
)->delegation
);
2725 if (delegation
== NULL
) {
2727 nfs_state_clear_delegation(state
);
2731 nfs4_stateid_copy(&stateid
, &delegation
->stateid
);
2732 if (test_bit(NFS_DELEGATION_REVOKED
, &delegation
->flags
)) {
2734 nfs_state_clear_delegation(state
);
2738 if (!test_and_clear_bit(NFS_DELEGATION_TEST_EXPIRED
,
2739 &delegation
->flags
)) {
2744 if (delegation
->cred
)
2745 cred
= get_cred(delegation
->cred
);
2747 status
= nfs41_test_and_free_expired_stateid(server
, &stateid
, cred
);
2748 trace_nfs4_test_delegation_stateid(state
, NULL
, status
);
2749 if (status
== -NFS4ERR_EXPIRED
|| status
== -NFS4ERR_BAD_STATEID
)
2750 nfs_finish_clear_delegation_stateid(state
, &stateid
);
2752 if (delegation
->cred
)
2757 * nfs41_check_expired_locks - possibly free a lock stateid
2759 * @state: NFSv4 state for an inode
2761 * Returns NFS_OK if recovery for this stateid is now finished.
2762 * Otherwise a negative NFS4ERR value is returned.
2764 static int nfs41_check_expired_locks(struct nfs4_state
*state
)
2766 int status
, ret
= NFS_OK
;
2767 struct nfs4_lock_state
*lsp
, *prev
= NULL
;
2768 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
2770 if (!test_bit(LK_STATE_IN_USE
, &state
->flags
))
2773 spin_lock(&state
->state_lock
);
2774 list_for_each_entry(lsp
, &state
->lock_states
, ls_locks
) {
2775 if (test_bit(NFS_LOCK_INITIALIZED
, &lsp
->ls_flags
)) {
2776 const struct cred
*cred
= lsp
->ls_state
->owner
->so_cred
;
2778 refcount_inc(&lsp
->ls_count
);
2779 spin_unlock(&state
->state_lock
);
2781 nfs4_put_lock_state(prev
);
2784 status
= nfs41_test_and_free_expired_stateid(server
,
2787 trace_nfs4_test_lock_stateid(state
, lsp
, status
);
2788 if (status
== -NFS4ERR_EXPIRED
||
2789 status
== -NFS4ERR_BAD_STATEID
) {
2790 clear_bit(NFS_LOCK_INITIALIZED
, &lsp
->ls_flags
);
2791 lsp
->ls_stateid
.type
= NFS4_INVALID_STATEID_TYPE
;
2792 if (!recover_lost_locks
)
2793 set_bit(NFS_LOCK_LOST
, &lsp
->ls_flags
);
2794 } else if (status
!= NFS_OK
) {
2796 nfs4_put_lock_state(prev
);
2799 spin_lock(&state
->state_lock
);
2802 spin_unlock(&state
->state_lock
);
2803 nfs4_put_lock_state(prev
);
2809 * nfs41_check_open_stateid - possibly free an open stateid
2811 * @state: NFSv4 state for an inode
2813 * Returns NFS_OK if recovery for this stateid is now finished.
2814 * Otherwise a negative NFS4ERR value is returned.
2816 static int nfs41_check_open_stateid(struct nfs4_state
*state
)
2818 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
2819 nfs4_stateid
*stateid
= &state
->open_stateid
;
2820 const struct cred
*cred
= state
->owner
->so_cred
;
2823 if (test_bit(NFS_OPEN_STATE
, &state
->flags
) == 0) {
2824 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) == 0) {
2825 if (nfs4_have_delegation(state
->inode
, state
->state
))
2827 return -NFS4ERR_OPENMODE
;
2829 return -NFS4ERR_BAD_STATEID
;
2831 status
= nfs41_test_and_free_expired_stateid(server
, stateid
, cred
);
2832 trace_nfs4_test_open_stateid(state
, NULL
, status
);
2833 if (status
== -NFS4ERR_EXPIRED
|| status
== -NFS4ERR_BAD_STATEID
) {
2834 clear_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
2835 clear_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
2836 clear_bit(NFS_O_RDWR_STATE
, &state
->flags
);
2837 clear_bit(NFS_OPEN_STATE
, &state
->flags
);
2838 stateid
->type
= NFS4_INVALID_STATEID_TYPE
;
2841 if (nfs_open_stateid_recover_openmode(state
))
2842 return -NFS4ERR_OPENMODE
;
2846 static int nfs41_open_expired(struct nfs4_state_owner
*sp
, struct nfs4_state
*state
)
2850 nfs41_check_delegation_stateid(state
);
2851 status
= nfs41_check_expired_locks(state
);
2852 if (status
!= NFS_OK
)
2854 status
= nfs41_check_open_stateid(state
);
2855 if (status
!= NFS_OK
)
2856 status
= nfs4_open_expired(sp
, state
);
2862 * on an EXCLUSIVE create, the server should send back a bitmask with FATTR4-*
2863 * fields corresponding to attributes that were used to store the verifier.
2864 * Make sure we clobber those fields in the later setattr call
2866 static unsigned nfs4_exclusive_attrset(struct nfs4_opendata
*opendata
,
2867 struct iattr
*sattr
, struct nfs4_label
**label
)
2869 const __u32
*bitmask
= opendata
->o_arg
.server
->exclcreat_bitmask
;
2874 for (i
= 0; i
< ARRAY_SIZE(attrset
); i
++) {
2875 attrset
[i
] = opendata
->o_res
.attrset
[i
];
2876 if (opendata
->o_arg
.createmode
== NFS4_CREATE_EXCLUSIVE4_1
)
2877 attrset
[i
] &= ~bitmask
[i
];
2880 ret
= (opendata
->o_arg
.createmode
== NFS4_CREATE_EXCLUSIVE
) ?
2881 sattr
->ia_valid
: 0;
2883 if ((attrset
[1] & (FATTR4_WORD1_TIME_ACCESS
|FATTR4_WORD1_TIME_ACCESS_SET
))) {
2884 if (sattr
->ia_valid
& ATTR_ATIME_SET
)
2885 ret
|= ATTR_ATIME_SET
;
2890 if ((attrset
[1] & (FATTR4_WORD1_TIME_MODIFY
|FATTR4_WORD1_TIME_MODIFY_SET
))) {
2891 if (sattr
->ia_valid
& ATTR_MTIME_SET
)
2892 ret
|= ATTR_MTIME_SET
;
2897 if (!(attrset
[2] & FATTR4_WORD2_SECURITY_LABEL
))
2902 static int _nfs4_open_and_get_state(struct nfs4_opendata
*opendata
,
2905 struct nfs_open_context
*ctx
)
2907 struct nfs4_state_owner
*sp
= opendata
->owner
;
2908 struct nfs_server
*server
= sp
->so_server
;
2909 struct dentry
*dentry
;
2910 struct nfs4_state
*state
;
2914 seq
= raw_seqcount_begin(&sp
->so_reclaim_seqcount
);
2916 ret
= _nfs4_proc_open(opendata
, ctx
);
2920 state
= _nfs4_opendata_to_nfs4_state(opendata
);
2921 ret
= PTR_ERR(state
);
2925 if (server
->caps
& NFS_CAP_POSIX_LOCK
)
2926 set_bit(NFS_STATE_POSIX_LOCKS
, &state
->flags
);
2927 if (opendata
->o_res
.rflags
& NFS4_OPEN_RESULT_MAY_NOTIFY_LOCK
)
2928 set_bit(NFS_STATE_MAY_NOTIFY_LOCK
, &state
->flags
);
2930 dentry
= opendata
->dentry
;
2931 if (d_really_is_negative(dentry
)) {
2932 struct dentry
*alias
;
2934 alias
= d_exact_alias(dentry
, state
->inode
);
2936 alias
= d_splice_alias(igrab(state
->inode
), dentry
);
2937 /* d_splice_alias() can't fail here - it's a non-directory */
2940 ctx
->dentry
= dentry
= alias
;
2942 nfs_set_verifier(dentry
,
2943 nfs_save_change_attribute(d_inode(opendata
->dir
)));
2946 /* Parse layoutget results before we check for access */
2947 pnfs_parse_lgopen(state
->inode
, opendata
->lgp
, ctx
);
2949 ret
= nfs4_opendata_access(sp
->so_cred
, opendata
, state
, fmode
, flags
);
2953 if (d_inode(dentry
) == state
->inode
) {
2954 nfs_inode_attach_open_context(ctx
);
2955 if (read_seqcount_retry(&sp
->so_reclaim_seqcount
, seq
))
2956 nfs4_schedule_stateid_recovery(server
, state
);
2960 if (!opendata
->cancelled
)
2961 nfs4_sequence_free_slot(&opendata
->o_res
.seq_res
);
2966 * Returns a referenced nfs4_state
2968 static int _nfs4_do_open(struct inode
*dir
,
2969 struct nfs_open_context
*ctx
,
2971 const struct nfs4_open_createattrs
*c
,
2974 struct nfs4_state_owner
*sp
;
2975 struct nfs4_state
*state
= NULL
;
2976 struct nfs_server
*server
= NFS_SERVER(dir
);
2977 struct nfs4_opendata
*opendata
;
2978 struct dentry
*dentry
= ctx
->dentry
;
2979 const struct cred
*cred
= ctx
->cred
;
2980 struct nfs4_threshold
**ctx_th
= &ctx
->mdsthreshold
;
2981 fmode_t fmode
= ctx
->mode
& (FMODE_READ
|FMODE_WRITE
|FMODE_EXEC
);
2982 enum open_claim_type4 claim
= NFS4_OPEN_CLAIM_NULL
;
2983 struct iattr
*sattr
= c
->sattr
;
2984 struct nfs4_label
*label
= c
->label
;
2985 struct nfs4_label
*olabel
= NULL
;
2988 /* Protect against reboot recovery conflicts */
2990 sp
= nfs4_get_state_owner(server
, cred
, GFP_KERNEL
);
2992 dprintk("nfs4_do_open: nfs4_get_state_owner failed!\n");
2995 status
= nfs4_client_recover_expired_lease(server
->nfs_client
);
2997 goto err_put_state_owner
;
2998 if (d_really_is_positive(dentry
))
2999 nfs4_return_incompatible_delegation(d_inode(dentry
), fmode
);
3001 if (d_really_is_positive(dentry
))
3002 claim
= NFS4_OPEN_CLAIM_FH
;
3003 opendata
= nfs4_opendata_alloc(dentry
, sp
, fmode
, flags
,
3004 c
, claim
, GFP_KERNEL
);
3005 if (opendata
== NULL
)
3006 goto err_put_state_owner
;
3009 olabel
= nfs4_label_alloc(server
, GFP_KERNEL
);
3010 if (IS_ERR(olabel
)) {
3011 status
= PTR_ERR(olabel
);
3012 goto err_opendata_put
;
3016 if (server
->attr_bitmask
[2] & FATTR4_WORD2_MDSTHRESHOLD
) {
3017 if (!opendata
->f_attr
.mdsthreshold
) {
3018 opendata
->f_attr
.mdsthreshold
= pnfs_mdsthreshold_alloc();
3019 if (!opendata
->f_attr
.mdsthreshold
)
3020 goto err_free_label
;
3022 opendata
->o_arg
.open_bitmap
= &nfs4_pnfs_open_bitmap
[0];
3024 if (d_really_is_positive(dentry
))
3025 opendata
->state
= nfs4_get_open_state(d_inode(dentry
), sp
);
3027 status
= _nfs4_open_and_get_state(opendata
, fmode
, flags
, ctx
);
3029 goto err_free_label
;
3032 if ((opendata
->o_arg
.open_flags
& (O_CREAT
|O_EXCL
)) == (O_CREAT
|O_EXCL
) &&
3033 (opendata
->o_arg
.createmode
!= NFS4_CREATE_GUARDED
)) {
3034 unsigned attrs
= nfs4_exclusive_attrset(opendata
, sattr
, &label
);
3036 * send create attributes which was not set by open
3037 * with an extra setattr.
3039 if (attrs
|| label
) {
3040 unsigned ia_old
= sattr
->ia_valid
;
3042 sattr
->ia_valid
= attrs
;
3043 nfs_fattr_init(opendata
->o_res
.f_attr
);
3044 status
= nfs4_do_setattr(state
->inode
, cred
,
3045 opendata
->o_res
.f_attr
, sattr
,
3046 ctx
, label
, olabel
);
3048 nfs_setattr_update_inode(state
->inode
, sattr
,
3049 opendata
->o_res
.f_attr
);
3050 nfs_setsecurity(state
->inode
, opendata
->o_res
.f_attr
, olabel
);
3052 sattr
->ia_valid
= ia_old
;
3055 if (opened
&& opendata
->file_created
)
3058 if (pnfs_use_threshold(ctx_th
, opendata
->f_attr
.mdsthreshold
, server
)) {
3059 *ctx_th
= opendata
->f_attr
.mdsthreshold
;
3060 opendata
->f_attr
.mdsthreshold
= NULL
;
3063 nfs4_label_free(olabel
);
3065 nfs4_opendata_put(opendata
);
3066 nfs4_put_state_owner(sp
);
3069 nfs4_label_free(olabel
);
3071 nfs4_opendata_put(opendata
);
3072 err_put_state_owner
:
3073 nfs4_put_state_owner(sp
);
3079 static struct nfs4_state
*nfs4_do_open(struct inode
*dir
,
3080 struct nfs_open_context
*ctx
,
3082 struct iattr
*sattr
,
3083 struct nfs4_label
*label
,
3086 struct nfs_server
*server
= NFS_SERVER(dir
);
3087 struct nfs4_exception exception
= {
3088 .interruptible
= true,
3090 struct nfs4_state
*res
;
3091 struct nfs4_open_createattrs c
= {
3095 [0] = (__u32
)jiffies
,
3096 [1] = (__u32
)current
->pid
,
3102 status
= _nfs4_do_open(dir
, ctx
, flags
, &c
, opened
);
3104 trace_nfs4_open_file(ctx
, flags
, status
);
3107 /* NOTE: BAD_SEQID means the server and client disagree about the
3108 * book-keeping w.r.t. state-changing operations
3109 * (OPEN/CLOSE/LOCK/LOCKU...)
3110 * It is actually a sign of a bug on the client or on the server.
3112 * If we receive a BAD_SEQID error in the particular case of
3113 * doing an OPEN, we assume that nfs_increment_open_seqid() will
3114 * have unhashed the old state_owner for us, and that we can
3115 * therefore safely retry using a new one. We should still warn
3116 * the user though...
3118 if (status
== -NFS4ERR_BAD_SEQID
) {
3119 pr_warn_ratelimited("NFS: v4 server %s "
3120 " returned a bad sequence-id error!\n",
3121 NFS_SERVER(dir
)->nfs_client
->cl_hostname
);
3122 exception
.retry
= 1;
3126 * BAD_STATEID on OPEN means that the server cancelled our
3127 * state before it received the OPEN_CONFIRM.
3128 * Recover by retrying the request as per the discussion
3129 * on Page 181 of RFC3530.
3131 if (status
== -NFS4ERR_BAD_STATEID
) {
3132 exception
.retry
= 1;
3135 if (status
== -EAGAIN
) {
3136 /* We must have found a delegation */
3137 exception
.retry
= 1;
3140 if (nfs4_clear_cap_atomic_open_v1(server
, status
, &exception
))
3142 res
= ERR_PTR(nfs4_handle_exception(server
,
3143 status
, &exception
));
3144 } while (exception
.retry
);
3148 static int _nfs4_do_setattr(struct inode
*inode
,
3149 struct nfs_setattrargs
*arg
,
3150 struct nfs_setattrres
*res
,
3151 const struct cred
*cred
,
3152 struct nfs_open_context
*ctx
)
3154 struct nfs_server
*server
= NFS_SERVER(inode
);
3155 struct rpc_message msg
= {
3156 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETATTR
],
3161 const struct cred
*delegation_cred
= NULL
;
3162 unsigned long timestamp
= jiffies
;
3166 nfs_fattr_init(res
->fattr
);
3168 /* Servers should only apply open mode checks for file size changes */
3169 truncate
= (arg
->iap
->ia_valid
& ATTR_SIZE
) ? true : false;
3173 if (nfs4_copy_delegation_stateid(inode
, FMODE_WRITE
, &arg
->stateid
, &delegation_cred
)) {
3174 /* Use that stateid */
3175 } else if (ctx
!= NULL
) {
3176 struct nfs_lock_context
*l_ctx
;
3177 if (!nfs4_valid_open_stateid(ctx
->state
))
3179 l_ctx
= nfs_get_lock_context(ctx
);
3181 return PTR_ERR(l_ctx
);
3182 status
= nfs4_select_rw_stateid(ctx
->state
, FMODE_WRITE
, l_ctx
,
3183 &arg
->stateid
, &delegation_cred
);
3184 nfs_put_lock_context(l_ctx
);
3189 nfs4_stateid_copy(&arg
->stateid
, &zero_stateid
);
3191 if (delegation_cred
)
3192 msg
.rpc_cred
= delegation_cred
;
3194 status
= nfs4_call_sync(server
->client
, server
, &msg
, &arg
->seq_args
, &res
->seq_res
, 1);
3196 put_cred(delegation_cred
);
3197 if (status
== 0 && ctx
!= NULL
)
3198 renew_lease(server
, timestamp
);
3199 trace_nfs4_setattr(inode
, &arg
->stateid
, status
);
3203 static int nfs4_do_setattr(struct inode
*inode
, const struct cred
*cred
,
3204 struct nfs_fattr
*fattr
, struct iattr
*sattr
,
3205 struct nfs_open_context
*ctx
, struct nfs4_label
*ilabel
,
3206 struct nfs4_label
*olabel
)
3208 struct nfs_server
*server
= NFS_SERVER(inode
);
3209 __u32 bitmask
[NFS4_BITMASK_SZ
];
3210 struct nfs4_state
*state
= ctx
? ctx
->state
: NULL
;
3211 struct nfs_setattrargs arg
= {
3212 .fh
= NFS_FH(inode
),
3218 struct nfs_setattrres res
= {
3223 struct nfs4_exception exception
= {
3226 .stateid
= &arg
.stateid
,
3231 nfs4_bitmap_copy_adjust_setattr(bitmask
,
3232 nfs4_bitmask(server
, olabel
),
3235 err
= _nfs4_do_setattr(inode
, &arg
, &res
, cred
, ctx
);
3237 case -NFS4ERR_OPENMODE
:
3238 if (!(sattr
->ia_valid
& ATTR_SIZE
)) {
3239 pr_warn_once("NFSv4: server %s is incorrectly "
3240 "applying open mode checks to "
3241 "a SETATTR that is not "
3242 "changing file size.\n",
3243 server
->nfs_client
->cl_hostname
);
3245 if (state
&& !(state
->state
& FMODE_WRITE
)) {
3247 if (sattr
->ia_valid
& ATTR_OPEN
)
3252 err
= nfs4_handle_exception(server
, err
, &exception
);
3253 } while (exception
.retry
);
3259 nfs4_wait_on_layoutreturn(struct inode
*inode
, struct rpc_task
*task
)
3261 if (inode
== NULL
|| !nfs_have_layout(inode
))
3264 return pnfs_wait_on_layoutreturn(inode
, task
);
3267 struct nfs4_closedata
{
3268 struct inode
*inode
;
3269 struct nfs4_state
*state
;
3270 struct nfs_closeargs arg
;
3271 struct nfs_closeres res
;
3273 struct nfs4_layoutreturn_args arg
;
3274 struct nfs4_layoutreturn_res res
;
3275 struct nfs4_xdr_opaque_data ld_private
;
3279 struct nfs_fattr fattr
;
3280 unsigned long timestamp
;
3283 static void nfs4_free_closedata(void *data
)
3285 struct nfs4_closedata
*calldata
= data
;
3286 struct nfs4_state_owner
*sp
= calldata
->state
->owner
;
3287 struct super_block
*sb
= calldata
->state
->inode
->i_sb
;
3289 if (calldata
->lr
.roc
)
3290 pnfs_roc_release(&calldata
->lr
.arg
, &calldata
->lr
.res
,
3291 calldata
->res
.lr_ret
);
3292 nfs4_put_open_state(calldata
->state
);
3293 nfs_free_seqid(calldata
->arg
.seqid
);
3294 nfs4_put_state_owner(sp
);
3295 nfs_sb_deactive(sb
);
3299 static void nfs4_close_done(struct rpc_task
*task
, void *data
)
3301 struct nfs4_closedata
*calldata
= data
;
3302 struct nfs4_state
*state
= calldata
->state
;
3303 struct nfs_server
*server
= NFS_SERVER(calldata
->inode
);
3304 nfs4_stateid
*res_stateid
= NULL
;
3305 struct nfs4_exception exception
= {
3307 .inode
= calldata
->inode
,
3308 .stateid
= &calldata
->arg
.stateid
,
3311 dprintk("%s: begin!\n", __func__
);
3312 if (!nfs4_sequence_done(task
, &calldata
->res
.seq_res
))
3314 trace_nfs4_close(state
, &calldata
->arg
, &calldata
->res
, task
->tk_status
);
3316 /* Handle Layoutreturn errors */
3317 if (calldata
->arg
.lr_args
&& task
->tk_status
!= 0) {
3318 switch (calldata
->res
.lr_ret
) {
3320 calldata
->res
.lr_ret
= -NFS4ERR_NOMATCHING_LAYOUT
;
3323 calldata
->arg
.lr_args
= NULL
;
3324 calldata
->res
.lr_res
= NULL
;
3326 case -NFS4ERR_OLD_STATEID
:
3327 if (nfs4_layoutreturn_refresh_stateid(&calldata
->arg
.lr_args
->stateid
,
3328 &calldata
->arg
.lr_args
->range
,
3332 case -NFS4ERR_ADMIN_REVOKED
:
3333 case -NFS4ERR_DELEG_REVOKED
:
3334 case -NFS4ERR_EXPIRED
:
3335 case -NFS4ERR_BAD_STATEID
:
3336 case -NFS4ERR_UNKNOWN_LAYOUTTYPE
:
3337 case -NFS4ERR_WRONG_CRED
:
3338 calldata
->arg
.lr_args
= NULL
;
3339 calldata
->res
.lr_res
= NULL
;
3344 /* hmm. we are done with the inode, and in the process of freeing
3345 * the state_owner. we keep this around to process errors
3347 switch (task
->tk_status
) {
3349 res_stateid
= &calldata
->res
.stateid
;
3350 renew_lease(server
, calldata
->timestamp
);
3352 case -NFS4ERR_ACCESS
:
3353 if (calldata
->arg
.bitmask
!= NULL
) {
3354 calldata
->arg
.bitmask
= NULL
;
3355 calldata
->res
.fattr
= NULL
;
3360 case -NFS4ERR_OLD_STATEID
:
3361 /* Did we race with OPEN? */
3362 if (nfs4_refresh_open_stateid(&calldata
->arg
.stateid
,
3366 case -NFS4ERR_ADMIN_REVOKED
:
3367 case -NFS4ERR_STALE_STATEID
:
3368 case -NFS4ERR_EXPIRED
:
3369 nfs4_free_revoked_stateid(server
,
3370 &calldata
->arg
.stateid
,
3371 task
->tk_msg
.rpc_cred
);
3373 case -NFS4ERR_BAD_STATEID
:
3376 task
->tk_status
= nfs4_async_handle_exception(task
,
3377 server
, task
->tk_status
, &exception
);
3378 if (exception
.retry
)
3381 nfs_clear_open_stateid(state
, &calldata
->arg
.stateid
,
3382 res_stateid
, calldata
->arg
.fmode
);
3384 task
->tk_status
= 0;
3385 nfs_release_seqid(calldata
->arg
.seqid
);
3386 nfs_refresh_inode(calldata
->inode
, &calldata
->fattr
);
3387 dprintk("%s: done, ret = %d!\n", __func__
, task
->tk_status
);
3390 calldata
->res
.lr_ret
= 0;
3392 task
->tk_status
= 0;
3393 rpc_restart_call_prepare(task
);
3397 static void nfs4_close_prepare(struct rpc_task
*task
, void *data
)
3399 struct nfs4_closedata
*calldata
= data
;
3400 struct nfs4_state
*state
= calldata
->state
;
3401 struct inode
*inode
= calldata
->inode
;
3402 struct pnfs_layout_hdr
*lo
;
3403 bool is_rdonly
, is_wronly
, is_rdwr
;
3406 dprintk("%s: begin!\n", __func__
);
3407 if (nfs_wait_on_sequence(calldata
->arg
.seqid
, task
) != 0)
3410 task
->tk_msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_OPEN_DOWNGRADE
];
3411 spin_lock(&state
->owner
->so_lock
);
3412 is_rdwr
= test_bit(NFS_O_RDWR_STATE
, &state
->flags
);
3413 is_rdonly
= test_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
3414 is_wronly
= test_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
3415 /* Calculate the change in open mode */
3416 calldata
->arg
.fmode
= 0;
3417 if (state
->n_rdwr
== 0) {
3418 if (state
->n_rdonly
== 0)
3419 call_close
|= is_rdonly
;
3421 calldata
->arg
.fmode
|= FMODE_READ
;
3422 if (state
->n_wronly
== 0)
3423 call_close
|= is_wronly
;
3425 calldata
->arg
.fmode
|= FMODE_WRITE
;
3426 if (calldata
->arg
.fmode
!= (FMODE_READ
|FMODE_WRITE
))
3427 call_close
|= is_rdwr
;
3429 calldata
->arg
.fmode
|= FMODE_READ
|FMODE_WRITE
;
3431 if (!nfs4_valid_open_stateid(state
) ||
3432 !nfs4_refresh_open_stateid(&calldata
->arg
.stateid
, state
))
3434 spin_unlock(&state
->owner
->so_lock
);
3437 /* Note: exit _without_ calling nfs4_close_done */
3441 if (!calldata
->lr
.roc
&& nfs4_wait_on_layoutreturn(inode
, task
)) {
3442 nfs_release_seqid(calldata
->arg
.seqid
);
3446 lo
= calldata
->arg
.lr_args
? calldata
->arg
.lr_args
->layout
: NULL
;
3447 if (lo
&& !pnfs_layout_is_valid(lo
)) {
3448 calldata
->arg
.lr_args
= NULL
;
3449 calldata
->res
.lr_res
= NULL
;
3452 if (calldata
->arg
.fmode
== 0)
3453 task
->tk_msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_CLOSE
];
3455 if (calldata
->arg
.fmode
== 0 || calldata
->arg
.fmode
== FMODE_READ
) {
3456 /* Close-to-open cache consistency revalidation */
3457 if (!nfs4_have_delegation(inode
, FMODE_READ
))
3458 calldata
->arg
.bitmask
= NFS_SERVER(inode
)->cache_consistency_bitmask
;
3460 calldata
->arg
.bitmask
= NULL
;
3463 calldata
->arg
.share_access
=
3464 nfs4_map_atomic_open_share(NFS_SERVER(inode
),
3465 calldata
->arg
.fmode
, 0);
3467 if (calldata
->res
.fattr
== NULL
)
3468 calldata
->arg
.bitmask
= NULL
;
3469 else if (calldata
->arg
.bitmask
== NULL
)
3470 calldata
->res
.fattr
= NULL
;
3471 calldata
->timestamp
= jiffies
;
3472 if (nfs4_setup_sequence(NFS_SERVER(inode
)->nfs_client
,
3473 &calldata
->arg
.seq_args
,
3474 &calldata
->res
.seq_res
,
3476 nfs_release_seqid(calldata
->arg
.seqid
);
3477 dprintk("%s: done!\n", __func__
);
3480 task
->tk_action
= NULL
;
3482 nfs4_sequence_done(task
, &calldata
->res
.seq_res
);
3485 static const struct rpc_call_ops nfs4_close_ops
= {
3486 .rpc_call_prepare
= nfs4_close_prepare
,
3487 .rpc_call_done
= nfs4_close_done
,
3488 .rpc_release
= nfs4_free_closedata
,
3492 * It is possible for data to be read/written from a mem-mapped file
3493 * after the sys_close call (which hits the vfs layer as a flush).
3494 * This means that we can't safely call nfsv4 close on a file until
3495 * the inode is cleared. This in turn means that we are not good
3496 * NFSv4 citizens - we do not indicate to the server to update the file's
3497 * share state even when we are done with one of the three share
3498 * stateid's in the inode.
3500 * NOTE: Caller must be holding the sp->so_owner semaphore!
3502 int nfs4_do_close(struct nfs4_state
*state
, gfp_t gfp_mask
, int wait
)
3504 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
3505 struct nfs_seqid
*(*alloc_seqid
)(struct nfs_seqid_counter
*, gfp_t
);
3506 struct nfs4_closedata
*calldata
;
3507 struct nfs4_state_owner
*sp
= state
->owner
;
3508 struct rpc_task
*task
;
3509 struct rpc_message msg
= {
3510 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_CLOSE
],
3511 .rpc_cred
= state
->owner
->so_cred
,
3513 struct rpc_task_setup task_setup_data
= {
3514 .rpc_client
= server
->client
,
3515 .rpc_message
= &msg
,
3516 .callback_ops
= &nfs4_close_ops
,
3517 .workqueue
= nfsiod_workqueue
,
3518 .flags
= RPC_TASK_ASYNC
,
3520 int status
= -ENOMEM
;
3522 nfs4_state_protect(server
->nfs_client
, NFS_SP4_MACH_CRED_CLEANUP
,
3523 &task_setup_data
.rpc_client
, &msg
);
3525 calldata
= kzalloc(sizeof(*calldata
), gfp_mask
);
3526 if (calldata
== NULL
)
3528 nfs4_init_sequence(&calldata
->arg
.seq_args
, &calldata
->res
.seq_res
, 1, 0);
3529 calldata
->inode
= state
->inode
;
3530 calldata
->state
= state
;
3531 calldata
->arg
.fh
= NFS_FH(state
->inode
);
3532 if (!nfs4_copy_open_stateid(&calldata
->arg
.stateid
, state
))
3533 goto out_free_calldata
;
3534 /* Serialization for the sequence id */
3535 alloc_seqid
= server
->nfs_client
->cl_mvops
->alloc_seqid
;
3536 calldata
->arg
.seqid
= alloc_seqid(&state
->owner
->so_seqid
, gfp_mask
);
3537 if (IS_ERR(calldata
->arg
.seqid
))
3538 goto out_free_calldata
;
3539 nfs_fattr_init(&calldata
->fattr
);
3540 calldata
->arg
.fmode
= 0;
3541 calldata
->lr
.arg
.ld_private
= &calldata
->lr
.ld_private
;
3542 calldata
->res
.fattr
= &calldata
->fattr
;
3543 calldata
->res
.seqid
= calldata
->arg
.seqid
;
3544 calldata
->res
.server
= server
;
3545 calldata
->res
.lr_ret
= -NFS4ERR_NOMATCHING_LAYOUT
;
3546 calldata
->lr
.roc
= pnfs_roc(state
->inode
,
3547 &calldata
->lr
.arg
, &calldata
->lr
.res
, msg
.rpc_cred
);
3548 if (calldata
->lr
.roc
) {
3549 calldata
->arg
.lr_args
= &calldata
->lr
.arg
;
3550 calldata
->res
.lr_res
= &calldata
->lr
.res
;
3552 nfs_sb_active(calldata
->inode
->i_sb
);
3554 msg
.rpc_argp
= &calldata
->arg
;
3555 msg
.rpc_resp
= &calldata
->res
;
3556 task_setup_data
.callback_data
= calldata
;
3557 task
= rpc_run_task(&task_setup_data
);
3559 return PTR_ERR(task
);
3562 status
= rpc_wait_for_completion_task(task
);
3568 nfs4_put_open_state(state
);
3569 nfs4_put_state_owner(sp
);
3573 static struct inode
*
3574 nfs4_atomic_open(struct inode
*dir
, struct nfs_open_context
*ctx
,
3575 int open_flags
, struct iattr
*attr
, int *opened
)
3577 struct nfs4_state
*state
;
3578 struct nfs4_label l
= {0, 0, 0, NULL
}, *label
= NULL
;
3580 label
= nfs4_label_init_security(dir
, ctx
->dentry
, attr
, &l
);
3582 /* Protect against concurrent sillydeletes */
3583 state
= nfs4_do_open(dir
, ctx
, open_flags
, attr
, label
, opened
);
3585 nfs4_label_release_security(label
);
3588 return ERR_CAST(state
);
3589 return state
->inode
;
3592 static void nfs4_close_context(struct nfs_open_context
*ctx
, int is_sync
)
3594 if (ctx
->state
== NULL
)
3597 nfs4_close_sync(ctx
->state
, ctx
->mode
);
3599 nfs4_close_state(ctx
->state
, ctx
->mode
);
3602 #define FATTR4_WORD1_NFS40_MASK (2*FATTR4_WORD1_MOUNTED_ON_FILEID - 1UL)
3603 #define FATTR4_WORD2_NFS41_MASK (2*FATTR4_WORD2_SUPPATTR_EXCLCREAT - 1UL)
3604 #define FATTR4_WORD2_NFS42_MASK (2*FATTR4_WORD2_MODE_UMASK - 1UL)
3606 static int _nfs4_server_capabilities(struct nfs_server
*server
, struct nfs_fh
*fhandle
)
3608 u32 bitmask
[3] = {}, minorversion
= server
->nfs_client
->cl_minorversion
;
3609 struct nfs4_server_caps_arg args
= {
3613 struct nfs4_server_caps_res res
= {};
3614 struct rpc_message msg
= {
3615 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SERVER_CAPS
],
3622 bitmask
[0] = FATTR4_WORD0_SUPPORTED_ATTRS
|
3623 FATTR4_WORD0_FH_EXPIRE_TYPE
|
3624 FATTR4_WORD0_LINK_SUPPORT
|
3625 FATTR4_WORD0_SYMLINK_SUPPORT
|
3626 FATTR4_WORD0_ACLSUPPORT
;
3628 bitmask
[2] = FATTR4_WORD2_SUPPATTR_EXCLCREAT
;
3630 status
= nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
3632 /* Sanity check the server answers */
3633 switch (minorversion
) {
3635 res
.attr_bitmask
[1] &= FATTR4_WORD1_NFS40_MASK
;
3636 res
.attr_bitmask
[2] = 0;
3639 res
.attr_bitmask
[2] &= FATTR4_WORD2_NFS41_MASK
;
3642 res
.attr_bitmask
[2] &= FATTR4_WORD2_NFS42_MASK
;
3644 memcpy(server
->attr_bitmask
, res
.attr_bitmask
, sizeof(server
->attr_bitmask
));
3645 server
->caps
&= ~(NFS_CAP_ACLS
|NFS_CAP_HARDLINKS
|
3646 NFS_CAP_SYMLINKS
|NFS_CAP_FILEID
|
3647 NFS_CAP_MODE
|NFS_CAP_NLINK
|NFS_CAP_OWNER
|
3648 NFS_CAP_OWNER_GROUP
|NFS_CAP_ATIME
|
3649 NFS_CAP_CTIME
|NFS_CAP_MTIME
|
3650 NFS_CAP_SECURITY_LABEL
);
3651 if (res
.attr_bitmask
[0] & FATTR4_WORD0_ACL
&&
3652 res
.acl_bitmask
& ACL4_SUPPORT_ALLOW_ACL
)
3653 server
->caps
|= NFS_CAP_ACLS
;
3654 if (res
.has_links
!= 0)
3655 server
->caps
|= NFS_CAP_HARDLINKS
;
3656 if (res
.has_symlinks
!= 0)
3657 server
->caps
|= NFS_CAP_SYMLINKS
;
3658 if (res
.attr_bitmask
[0] & FATTR4_WORD0_FILEID
)
3659 server
->caps
|= NFS_CAP_FILEID
;
3660 if (res
.attr_bitmask
[1] & FATTR4_WORD1_MODE
)
3661 server
->caps
|= NFS_CAP_MODE
;
3662 if (res
.attr_bitmask
[1] & FATTR4_WORD1_NUMLINKS
)
3663 server
->caps
|= NFS_CAP_NLINK
;
3664 if (res
.attr_bitmask
[1] & FATTR4_WORD1_OWNER
)
3665 server
->caps
|= NFS_CAP_OWNER
;
3666 if (res
.attr_bitmask
[1] & FATTR4_WORD1_OWNER_GROUP
)
3667 server
->caps
|= NFS_CAP_OWNER_GROUP
;
3668 if (res
.attr_bitmask
[1] & FATTR4_WORD1_TIME_ACCESS
)
3669 server
->caps
|= NFS_CAP_ATIME
;
3670 if (res
.attr_bitmask
[1] & FATTR4_WORD1_TIME_METADATA
)
3671 server
->caps
|= NFS_CAP_CTIME
;
3672 if (res
.attr_bitmask
[1] & FATTR4_WORD1_TIME_MODIFY
)
3673 server
->caps
|= NFS_CAP_MTIME
;
3674 #ifdef CONFIG_NFS_V4_SECURITY_LABEL
3675 if (res
.attr_bitmask
[2] & FATTR4_WORD2_SECURITY_LABEL
)
3676 server
->caps
|= NFS_CAP_SECURITY_LABEL
;
3678 memcpy(server
->attr_bitmask_nl
, res
.attr_bitmask
,
3679 sizeof(server
->attr_bitmask
));
3680 server
->attr_bitmask_nl
[2] &= ~FATTR4_WORD2_SECURITY_LABEL
;
3682 memcpy(server
->cache_consistency_bitmask
, res
.attr_bitmask
, sizeof(server
->cache_consistency_bitmask
));
3683 server
->cache_consistency_bitmask
[0] &= FATTR4_WORD0_CHANGE
|FATTR4_WORD0_SIZE
;
3684 server
->cache_consistency_bitmask
[1] &= FATTR4_WORD1_TIME_METADATA
|FATTR4_WORD1_TIME_MODIFY
;
3685 server
->cache_consistency_bitmask
[2] = 0;
3687 /* Avoid a regression due to buggy server */
3688 for (i
= 0; i
< ARRAY_SIZE(res
.exclcreat_bitmask
); i
++)
3689 res
.exclcreat_bitmask
[i
] &= res
.attr_bitmask
[i
];
3690 memcpy(server
->exclcreat_bitmask
, res
.exclcreat_bitmask
,
3691 sizeof(server
->exclcreat_bitmask
));
3693 server
->acl_bitmask
= res
.acl_bitmask
;
3694 server
->fh_expire_type
= res
.fh_expire_type
;
3700 int nfs4_server_capabilities(struct nfs_server
*server
, struct nfs_fh
*fhandle
)
3702 struct nfs4_exception exception
= {
3703 .interruptible
= true,
3707 err
= nfs4_handle_exception(server
,
3708 _nfs4_server_capabilities(server
, fhandle
),
3710 } while (exception
.retry
);
3714 static int _nfs4_lookup_root(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
3715 struct nfs_fsinfo
*info
)
3718 struct nfs4_lookup_root_arg args
= {
3721 struct nfs4_lookup_res res
= {
3723 .fattr
= info
->fattr
,
3726 struct rpc_message msg
= {
3727 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOOKUP_ROOT
],
3732 bitmask
[0] = nfs4_fattr_bitmap
[0];
3733 bitmask
[1] = nfs4_fattr_bitmap
[1];
3735 * Process the label in the upcoming getfattr
3737 bitmask
[2] = nfs4_fattr_bitmap
[2] & ~FATTR4_WORD2_SECURITY_LABEL
;
3739 nfs_fattr_init(info
->fattr
);
3740 return nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
3743 static int nfs4_lookup_root(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
3744 struct nfs_fsinfo
*info
)
3746 struct nfs4_exception exception
= {
3747 .interruptible
= true,
3751 err
= _nfs4_lookup_root(server
, fhandle
, info
);
3752 trace_nfs4_lookup_root(server
, fhandle
, info
->fattr
, err
);
3755 case -NFS4ERR_WRONGSEC
:
3758 err
= nfs4_handle_exception(server
, err
, &exception
);
3760 } while (exception
.retry
);
3765 static int nfs4_lookup_root_sec(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
3766 struct nfs_fsinfo
*info
, rpc_authflavor_t flavor
)
3768 struct rpc_auth_create_args auth_args
= {
3769 .pseudoflavor
= flavor
,
3771 struct rpc_auth
*auth
;
3773 auth
= rpcauth_create(&auth_args
, server
->client
);
3776 return nfs4_lookup_root(server
, fhandle
, info
);
3780 * Retry pseudoroot lookup with various security flavors. We do this when:
3782 * NFSv4.0: the PUTROOTFH operation returns NFS4ERR_WRONGSEC
3783 * NFSv4.1: the server does not support the SECINFO_NO_NAME operation
3785 * Returns zero on success, or a negative NFS4ERR value, or a
3786 * negative errno value.
3788 static int nfs4_find_root_sec(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
3789 struct nfs_fsinfo
*info
)
3791 /* Per 3530bis 15.33.5 */
3792 static const rpc_authflavor_t flav_array
[] = {
3796 RPC_AUTH_UNIX
, /* courtesy */
3799 int status
= -EPERM
;
3802 if (server
->auth_info
.flavor_len
> 0) {
3803 /* try each flavor specified by user */
3804 for (i
= 0; i
< server
->auth_info
.flavor_len
; i
++) {
3805 status
= nfs4_lookup_root_sec(server
, fhandle
, info
,
3806 server
->auth_info
.flavors
[i
]);
3807 if (status
== -NFS4ERR_WRONGSEC
|| status
== -EACCES
)
3812 /* no flavors specified by user, try default list */
3813 for (i
= 0; i
< ARRAY_SIZE(flav_array
); i
++) {
3814 status
= nfs4_lookup_root_sec(server
, fhandle
, info
,
3816 if (status
== -NFS4ERR_WRONGSEC
|| status
== -EACCES
)
3823 * -EACCES could mean that the user doesn't have correct permissions
3824 * to access the mount. It could also mean that we tried to mount
3825 * with a gss auth flavor, but rpc.gssd isn't running. Either way,
3826 * existing mount programs don't handle -EACCES very well so it should
3827 * be mapped to -EPERM instead.
3829 if (status
== -EACCES
)
3835 * nfs4_proc_get_rootfh - get file handle for server's pseudoroot
3836 * @server: initialized nfs_server handle
3837 * @fhandle: we fill in the pseudo-fs root file handle
3838 * @info: we fill in an FSINFO struct
3839 * @auth_probe: probe the auth flavours
3841 * Returns zero on success, or a negative errno.
3843 int nfs4_proc_get_rootfh(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
3844 struct nfs_fsinfo
*info
,
3850 status
= nfs4_lookup_root(server
, fhandle
, info
);
3852 if (auth_probe
|| status
== NFS4ERR_WRONGSEC
)
3853 status
= server
->nfs_client
->cl_mvops
->find_root_sec(server
,
3857 status
= nfs4_server_capabilities(server
, fhandle
);
3859 status
= nfs4_do_fsinfo(server
, fhandle
, info
);
3861 return nfs4_map_errors(status
);
3864 static int nfs4_proc_get_root(struct nfs_server
*server
, struct nfs_fh
*mntfh
,
3865 struct nfs_fsinfo
*info
)
3868 struct nfs_fattr
*fattr
= info
->fattr
;
3869 struct nfs4_label
*label
= NULL
;
3871 error
= nfs4_server_capabilities(server
, mntfh
);
3873 dprintk("nfs4_get_root: getcaps error = %d\n", -error
);
3877 label
= nfs4_label_alloc(server
, GFP_KERNEL
);
3879 return PTR_ERR(label
);
3881 error
= nfs4_proc_getattr(server
, mntfh
, fattr
, label
, NULL
);
3883 dprintk("nfs4_get_root: getattr error = %d\n", -error
);
3884 goto err_free_label
;
3887 if (fattr
->valid
& NFS_ATTR_FATTR_FSID
&&
3888 !nfs_fsid_equal(&server
->fsid
, &fattr
->fsid
))
3889 memcpy(&server
->fsid
, &fattr
->fsid
, sizeof(server
->fsid
));
3892 nfs4_label_free(label
);
3898 * Get locations and (maybe) other attributes of a referral.
3899 * Note that we'll actually follow the referral later when
3900 * we detect fsid mismatch in inode revalidation
3902 static int nfs4_get_referral(struct rpc_clnt
*client
, struct inode
*dir
,
3903 const struct qstr
*name
, struct nfs_fattr
*fattr
,
3904 struct nfs_fh
*fhandle
)
3906 int status
= -ENOMEM
;
3907 struct page
*page
= NULL
;
3908 struct nfs4_fs_locations
*locations
= NULL
;
3910 page
= alloc_page(GFP_KERNEL
);
3913 locations
= kmalloc(sizeof(struct nfs4_fs_locations
), GFP_KERNEL
);
3914 if (locations
== NULL
)
3917 status
= nfs4_proc_fs_locations(client
, dir
, name
, locations
, page
);
3922 * If the fsid didn't change, this is a migration event, not a
3923 * referral. Cause us to drop into the exception handler, which
3924 * will kick off migration recovery.
3926 if (nfs_fsid_equal(&NFS_SERVER(dir
)->fsid
, &locations
->fattr
.fsid
)) {
3927 dprintk("%s: server did not return a different fsid for"
3928 " a referral at %s\n", __func__
, name
->name
);
3929 status
= -NFS4ERR_MOVED
;
3932 /* Fixup attributes for the nfs_lookup() call to nfs_fhget() */
3933 nfs_fixup_referral_attributes(&locations
->fattr
);
3935 /* replace the lookup nfs_fattr with the locations nfs_fattr */
3936 memcpy(fattr
, &locations
->fattr
, sizeof(struct nfs_fattr
));
3937 memset(fhandle
, 0, sizeof(struct nfs_fh
));
3945 static int _nfs4_proc_getattr(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
3946 struct nfs_fattr
*fattr
, struct nfs4_label
*label
,
3947 struct inode
*inode
)
3949 __u32 bitmask
[NFS4_BITMASK_SZ
];
3950 struct nfs4_getattr_arg args
= {
3954 struct nfs4_getattr_res res
= {
3959 struct rpc_message msg
= {
3960 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GETATTR
],
3965 nfs4_bitmap_copy_adjust(bitmask
, nfs4_bitmask(server
, label
), inode
);
3967 nfs_fattr_init(fattr
);
3968 return nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
3971 static int nfs4_proc_getattr(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
3972 struct nfs_fattr
*fattr
, struct nfs4_label
*label
,
3973 struct inode
*inode
)
3975 struct nfs4_exception exception
= {
3976 .interruptible
= true,
3980 err
= _nfs4_proc_getattr(server
, fhandle
, fattr
, label
, inode
);
3981 trace_nfs4_getattr(server
, fhandle
, fattr
, err
);
3982 err
= nfs4_handle_exception(server
, err
,
3984 } while (exception
.retry
);
3989 * The file is not closed if it is opened due to the a request to change
3990 * the size of the file. The open call will not be needed once the
3991 * VFS layer lookup-intents are implemented.
3993 * Close is called when the inode is destroyed.
3994 * If we haven't opened the file for O_WRONLY, we
3995 * need to in the size_change case to obtain a stateid.
3998 * Because OPEN is always done by name in nfsv4, it is
3999 * possible that we opened a different file by the same
4000 * name. We can recognize this race condition, but we
4001 * can't do anything about it besides returning an error.
4003 * This will be fixed with VFS changes (lookup-intent).
4006 nfs4_proc_setattr(struct dentry
*dentry
, struct nfs_fattr
*fattr
,
4007 struct iattr
*sattr
)
4009 struct inode
*inode
= d_inode(dentry
);
4010 const struct cred
*cred
= NULL
;
4011 struct nfs_open_context
*ctx
= NULL
;
4012 struct nfs4_label
*label
= NULL
;
4015 if (pnfs_ld_layoutret_on_setattr(inode
) &&
4016 sattr
->ia_valid
& ATTR_SIZE
&&
4017 sattr
->ia_size
< i_size_read(inode
))
4018 pnfs_commit_and_return_layout(inode
);
4020 nfs_fattr_init(fattr
);
4022 /* Deal with open(O_TRUNC) */
4023 if (sattr
->ia_valid
& ATTR_OPEN
)
4024 sattr
->ia_valid
&= ~(ATTR_MTIME
|ATTR_CTIME
);
4026 /* Optimization: if the end result is no change, don't RPC */
4027 if ((sattr
->ia_valid
& ~(ATTR_FILE
|ATTR_OPEN
)) == 0)
4030 /* Search for an existing open(O_WRITE) file */
4031 if (sattr
->ia_valid
& ATTR_FILE
) {
4033 ctx
= nfs_file_open_context(sattr
->ia_file
);
4038 label
= nfs4_label_alloc(NFS_SERVER(inode
), GFP_KERNEL
);
4040 return PTR_ERR(label
);
4042 /* Return any delegations if we're going to change ACLs */
4043 if ((sattr
->ia_valid
& (ATTR_MODE
|ATTR_UID
|ATTR_GID
)) != 0)
4044 nfs4_inode_make_writeable(inode
);
4046 status
= nfs4_do_setattr(inode
, cred
, fattr
, sattr
, ctx
, NULL
, label
);
4048 nfs_setattr_update_inode(inode
, sattr
, fattr
);
4049 nfs_setsecurity(inode
, fattr
, label
);
4051 nfs4_label_free(label
);
4055 static int _nfs4_proc_lookup(struct rpc_clnt
*clnt
, struct inode
*dir
,
4056 const struct qstr
*name
, struct nfs_fh
*fhandle
,
4057 struct nfs_fattr
*fattr
, struct nfs4_label
*label
)
4059 struct nfs_server
*server
= NFS_SERVER(dir
);
4061 struct nfs4_lookup_arg args
= {
4062 .bitmask
= server
->attr_bitmask
,
4063 .dir_fh
= NFS_FH(dir
),
4066 struct nfs4_lookup_res res
= {
4072 struct rpc_message msg
= {
4073 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOOKUP
],
4078 args
.bitmask
= nfs4_bitmask(server
, label
);
4080 nfs_fattr_init(fattr
);
4082 dprintk("NFS call lookup %s\n", name
->name
);
4083 status
= nfs4_call_sync(clnt
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
4084 dprintk("NFS reply lookup: %d\n", status
);
4088 static void nfs_fixup_secinfo_attributes(struct nfs_fattr
*fattr
)
4090 fattr
->valid
|= NFS_ATTR_FATTR_TYPE
| NFS_ATTR_FATTR_MODE
|
4091 NFS_ATTR_FATTR_NLINK
| NFS_ATTR_FATTR_MOUNTPOINT
;
4092 fattr
->mode
= S_IFDIR
| S_IRUGO
| S_IXUGO
;
4096 static int nfs4_proc_lookup_common(struct rpc_clnt
**clnt
, struct inode
*dir
,
4097 const struct qstr
*name
, struct nfs_fh
*fhandle
,
4098 struct nfs_fattr
*fattr
, struct nfs4_label
*label
)
4100 struct nfs4_exception exception
= {
4101 .interruptible
= true,
4103 struct rpc_clnt
*client
= *clnt
;
4106 err
= _nfs4_proc_lookup(client
, dir
, name
, fhandle
, fattr
, label
);
4107 trace_nfs4_lookup(dir
, name
, err
);
4109 case -NFS4ERR_BADNAME
:
4112 case -NFS4ERR_MOVED
:
4113 err
= nfs4_get_referral(client
, dir
, name
, fattr
, fhandle
);
4114 if (err
== -NFS4ERR_MOVED
)
4115 err
= nfs4_handle_exception(NFS_SERVER(dir
), err
, &exception
);
4117 case -NFS4ERR_WRONGSEC
:
4119 if (client
!= *clnt
)
4121 client
= nfs4_negotiate_security(client
, dir
, name
);
4123 return PTR_ERR(client
);
4125 exception
.retry
= 1;
4128 err
= nfs4_handle_exception(NFS_SERVER(dir
), err
, &exception
);
4130 } while (exception
.retry
);
4135 else if (client
!= *clnt
)
4136 rpc_shutdown_client(client
);
4141 static int nfs4_proc_lookup(struct inode
*dir
, const struct qstr
*name
,
4142 struct nfs_fh
*fhandle
, struct nfs_fattr
*fattr
,
4143 struct nfs4_label
*label
)
4146 struct rpc_clnt
*client
= NFS_CLIENT(dir
);
4148 status
= nfs4_proc_lookup_common(&client
, dir
, name
, fhandle
, fattr
, label
);
4149 if (client
!= NFS_CLIENT(dir
)) {
4150 rpc_shutdown_client(client
);
4151 nfs_fixup_secinfo_attributes(fattr
);
4157 nfs4_proc_lookup_mountpoint(struct inode
*dir
, const struct qstr
*name
,
4158 struct nfs_fh
*fhandle
, struct nfs_fattr
*fattr
)
4160 struct rpc_clnt
*client
= NFS_CLIENT(dir
);
4163 status
= nfs4_proc_lookup_common(&client
, dir
, name
, fhandle
, fattr
, NULL
);
4165 return ERR_PTR(status
);
4166 return (client
== NFS_CLIENT(dir
)) ? rpc_clone_client(client
) : client
;
4169 static int _nfs4_proc_lookupp(struct inode
*inode
,
4170 struct nfs_fh
*fhandle
, struct nfs_fattr
*fattr
,
4171 struct nfs4_label
*label
)
4173 struct rpc_clnt
*clnt
= NFS_CLIENT(inode
);
4174 struct nfs_server
*server
= NFS_SERVER(inode
);
4176 struct nfs4_lookupp_arg args
= {
4177 .bitmask
= server
->attr_bitmask
,
4178 .fh
= NFS_FH(inode
),
4180 struct nfs4_lookupp_res res
= {
4186 struct rpc_message msg
= {
4187 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOOKUPP
],
4192 args
.bitmask
= nfs4_bitmask(server
, label
);
4194 nfs_fattr_init(fattr
);
4196 dprintk("NFS call lookupp ino=0x%lx\n", inode
->i_ino
);
4197 status
= nfs4_call_sync(clnt
, server
, &msg
, &args
.seq_args
,
4199 dprintk("NFS reply lookupp: %d\n", status
);
4203 static int nfs4_proc_lookupp(struct inode
*inode
, struct nfs_fh
*fhandle
,
4204 struct nfs_fattr
*fattr
, struct nfs4_label
*label
)
4206 struct nfs4_exception exception
= {
4207 .interruptible
= true,
4211 err
= _nfs4_proc_lookupp(inode
, fhandle
, fattr
, label
);
4212 trace_nfs4_lookupp(inode
, err
);
4213 err
= nfs4_handle_exception(NFS_SERVER(inode
), err
,
4215 } while (exception
.retry
);
4219 static int _nfs4_proc_access(struct inode
*inode
, struct nfs_access_entry
*entry
)
4221 struct nfs_server
*server
= NFS_SERVER(inode
);
4222 struct nfs4_accessargs args
= {
4223 .fh
= NFS_FH(inode
),
4224 .access
= entry
->mask
,
4226 struct nfs4_accessres res
= {
4229 struct rpc_message msg
= {
4230 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_ACCESS
],
4233 .rpc_cred
= entry
->cred
,
4237 if (!nfs4_have_delegation(inode
, FMODE_READ
)) {
4238 res
.fattr
= nfs_alloc_fattr();
4239 if (res
.fattr
== NULL
)
4241 args
.bitmask
= server
->cache_consistency_bitmask
;
4243 status
= nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
4245 nfs_access_set_mask(entry
, res
.access
);
4247 nfs_refresh_inode(inode
, res
.fattr
);
4249 nfs_free_fattr(res
.fattr
);
4253 static int nfs4_proc_access(struct inode
*inode
, struct nfs_access_entry
*entry
)
4255 struct nfs4_exception exception
= {
4256 .interruptible
= true,
4260 err
= _nfs4_proc_access(inode
, entry
);
4261 trace_nfs4_access(inode
, err
);
4262 err
= nfs4_handle_exception(NFS_SERVER(inode
), err
,
4264 } while (exception
.retry
);
4269 * TODO: For the time being, we don't try to get any attributes
4270 * along with any of the zero-copy operations READ, READDIR,
4273 * In the case of the first three, we want to put the GETATTR
4274 * after the read-type operation -- this is because it is hard
4275 * to predict the length of a GETATTR response in v4, and thus
4276 * align the READ data correctly. This means that the GETATTR
4277 * may end up partially falling into the page cache, and we should
4278 * shift it into the 'tail' of the xdr_buf before processing.
4279 * To do this efficiently, we need to know the total length
4280 * of data received, which doesn't seem to be available outside
4283 * In the case of WRITE, we also want to put the GETATTR after
4284 * the operation -- in this case because we want to make sure
4285 * we get the post-operation mtime and size.
4287 * Both of these changes to the XDR layer would in fact be quite
4288 * minor, but I decided to leave them for a subsequent patch.
4290 static int _nfs4_proc_readlink(struct inode
*inode
, struct page
*page
,
4291 unsigned int pgbase
, unsigned int pglen
)
4293 struct nfs4_readlink args
= {
4294 .fh
= NFS_FH(inode
),
4299 struct nfs4_readlink_res res
;
4300 struct rpc_message msg
= {
4301 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_READLINK
],
4306 return nfs4_call_sync(NFS_SERVER(inode
)->client
, NFS_SERVER(inode
), &msg
, &args
.seq_args
, &res
.seq_res
, 0);
4309 static int nfs4_proc_readlink(struct inode
*inode
, struct page
*page
,
4310 unsigned int pgbase
, unsigned int pglen
)
4312 struct nfs4_exception exception
= {
4313 .interruptible
= true,
4317 err
= _nfs4_proc_readlink(inode
, page
, pgbase
, pglen
);
4318 trace_nfs4_readlink(inode
, err
);
4319 err
= nfs4_handle_exception(NFS_SERVER(inode
), err
,
4321 } while (exception
.retry
);
4326 * This is just for mknod. open(O_CREAT) will always do ->open_context().
4329 nfs4_proc_create(struct inode
*dir
, struct dentry
*dentry
, struct iattr
*sattr
,
4332 struct nfs_server
*server
= NFS_SERVER(dir
);
4333 struct nfs4_label l
, *ilabel
= NULL
;
4334 struct nfs_open_context
*ctx
;
4335 struct nfs4_state
*state
;
4338 ctx
= alloc_nfs_open_context(dentry
, FMODE_READ
, NULL
);
4340 return PTR_ERR(ctx
);
4342 ilabel
= nfs4_label_init_security(dir
, dentry
, sattr
, &l
);
4344 if (!(server
->attr_bitmask
[2] & FATTR4_WORD2_MODE_UMASK
))
4345 sattr
->ia_mode
&= ~current_umask();
4346 state
= nfs4_do_open(dir
, ctx
, flags
, sattr
, ilabel
, NULL
);
4347 if (IS_ERR(state
)) {
4348 status
= PTR_ERR(state
);
4352 nfs4_label_release_security(ilabel
);
4353 put_nfs_open_context(ctx
);
4358 _nfs4_proc_remove(struct inode
*dir
, const struct qstr
*name
, u32 ftype
)
4360 struct nfs_server
*server
= NFS_SERVER(dir
);
4361 struct nfs_removeargs args
= {
4365 struct nfs_removeres res
= {
4368 struct rpc_message msg
= {
4369 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_REMOVE
],
4373 unsigned long timestamp
= jiffies
;
4376 status
= nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 1);
4378 spin_lock(&dir
->i_lock
);
4379 update_changeattr_locked(dir
, &res
.cinfo
, timestamp
, 0);
4380 /* Removing a directory decrements nlink in the parent */
4381 if (ftype
== NF4DIR
&& dir
->i_nlink
> 2)
4382 nfs4_dec_nlink_locked(dir
);
4383 spin_unlock(&dir
->i_lock
);
4388 static int nfs4_proc_remove(struct inode
*dir
, struct dentry
*dentry
)
4390 struct nfs4_exception exception
= {
4391 .interruptible
= true,
4393 struct inode
*inode
= d_inode(dentry
);
4397 if (inode
->i_nlink
== 1)
4398 nfs4_inode_return_delegation(inode
);
4400 nfs4_inode_make_writeable(inode
);
4403 err
= _nfs4_proc_remove(dir
, &dentry
->d_name
, NF4REG
);
4404 trace_nfs4_remove(dir
, &dentry
->d_name
, err
);
4405 err
= nfs4_handle_exception(NFS_SERVER(dir
), err
,
4407 } while (exception
.retry
);
4411 static int nfs4_proc_rmdir(struct inode
*dir
, const struct qstr
*name
)
4413 struct nfs4_exception exception
= {
4414 .interruptible
= true,
4419 err
= _nfs4_proc_remove(dir
, name
, NF4DIR
);
4420 trace_nfs4_remove(dir
, name
, err
);
4421 err
= nfs4_handle_exception(NFS_SERVER(dir
), err
,
4423 } while (exception
.retry
);
4427 static void nfs4_proc_unlink_setup(struct rpc_message
*msg
,
4428 struct dentry
*dentry
,
4429 struct inode
*inode
)
4431 struct nfs_removeargs
*args
= msg
->rpc_argp
;
4432 struct nfs_removeres
*res
= msg
->rpc_resp
;
4434 res
->server
= NFS_SB(dentry
->d_sb
);
4435 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_REMOVE
];
4436 nfs4_init_sequence(&args
->seq_args
, &res
->seq_res
, 1, 0);
4438 nfs_fattr_init(res
->dir_attr
);
4441 nfs4_inode_return_delegation(inode
);
4444 static void nfs4_proc_unlink_rpc_prepare(struct rpc_task
*task
, struct nfs_unlinkdata
*data
)
4446 nfs4_setup_sequence(NFS_SB(data
->dentry
->d_sb
)->nfs_client
,
4447 &data
->args
.seq_args
,
4452 static int nfs4_proc_unlink_done(struct rpc_task
*task
, struct inode
*dir
)
4454 struct nfs_unlinkdata
*data
= task
->tk_calldata
;
4455 struct nfs_removeres
*res
= &data
->res
;
4457 if (!nfs4_sequence_done(task
, &res
->seq_res
))
4459 if (nfs4_async_handle_error(task
, res
->server
, NULL
,
4460 &data
->timeout
) == -EAGAIN
)
4462 if (task
->tk_status
== 0)
4463 update_changeattr(dir
, &res
->cinfo
,
4464 res
->dir_attr
->time_start
, 0);
4468 static void nfs4_proc_rename_setup(struct rpc_message
*msg
,
4469 struct dentry
*old_dentry
,
4470 struct dentry
*new_dentry
)
4472 struct nfs_renameargs
*arg
= msg
->rpc_argp
;
4473 struct nfs_renameres
*res
= msg
->rpc_resp
;
4474 struct inode
*old_inode
= d_inode(old_dentry
);
4475 struct inode
*new_inode
= d_inode(new_dentry
);
4478 nfs4_inode_make_writeable(old_inode
);
4480 nfs4_inode_return_delegation(new_inode
);
4481 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RENAME
];
4482 res
->server
= NFS_SB(old_dentry
->d_sb
);
4483 nfs4_init_sequence(&arg
->seq_args
, &res
->seq_res
, 1, 0);
4486 static void nfs4_proc_rename_rpc_prepare(struct rpc_task
*task
, struct nfs_renamedata
*data
)
4488 nfs4_setup_sequence(NFS_SERVER(data
->old_dir
)->nfs_client
,
4489 &data
->args
.seq_args
,
4494 static int nfs4_proc_rename_done(struct rpc_task
*task
, struct inode
*old_dir
,
4495 struct inode
*new_dir
)
4497 struct nfs_renamedata
*data
= task
->tk_calldata
;
4498 struct nfs_renameres
*res
= &data
->res
;
4500 if (!nfs4_sequence_done(task
, &res
->seq_res
))
4502 if (nfs4_async_handle_error(task
, res
->server
, NULL
, &data
->timeout
) == -EAGAIN
)
4505 if (task
->tk_status
== 0) {
4506 if (new_dir
!= old_dir
) {
4507 /* Note: If we moved a directory, nlink will change */
4508 update_changeattr(old_dir
, &res
->old_cinfo
,
4509 res
->old_fattr
->time_start
,
4510 NFS_INO_INVALID_OTHER
);
4511 update_changeattr(new_dir
, &res
->new_cinfo
,
4512 res
->new_fattr
->time_start
,
4513 NFS_INO_INVALID_OTHER
);
4515 update_changeattr(old_dir
, &res
->old_cinfo
,
4516 res
->old_fattr
->time_start
,
4522 static int _nfs4_proc_link(struct inode
*inode
, struct inode
*dir
, const struct qstr
*name
)
4524 struct nfs_server
*server
= NFS_SERVER(inode
);
4525 __u32 bitmask
[NFS4_BITMASK_SZ
];
4526 struct nfs4_link_arg arg
= {
4527 .fh
= NFS_FH(inode
),
4528 .dir_fh
= NFS_FH(dir
),
4532 struct nfs4_link_res res
= {
4536 struct rpc_message msg
= {
4537 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LINK
],
4541 int status
= -ENOMEM
;
4543 res
.fattr
= nfs_alloc_fattr();
4544 if (res
.fattr
== NULL
)
4547 res
.label
= nfs4_label_alloc(server
, GFP_KERNEL
);
4548 if (IS_ERR(res
.label
)) {
4549 status
= PTR_ERR(res
.label
);
4553 nfs4_inode_make_writeable(inode
);
4554 nfs4_bitmap_copy_adjust_setattr(bitmask
, nfs4_bitmask(server
, res
.label
), inode
);
4556 status
= nfs4_call_sync(server
->client
, server
, &msg
, &arg
.seq_args
, &res
.seq_res
, 1);
4558 update_changeattr(dir
, &res
.cinfo
, res
.fattr
->time_start
, 0);
4559 status
= nfs_post_op_update_inode(inode
, res
.fattr
);
4561 nfs_setsecurity(inode
, res
.fattr
, res
.label
);
4565 nfs4_label_free(res
.label
);
4568 nfs_free_fattr(res
.fattr
);
4572 static int nfs4_proc_link(struct inode
*inode
, struct inode
*dir
, const struct qstr
*name
)
4574 struct nfs4_exception exception
= {
4575 .interruptible
= true,
4579 err
= nfs4_handle_exception(NFS_SERVER(inode
),
4580 _nfs4_proc_link(inode
, dir
, name
),
4582 } while (exception
.retry
);
4586 struct nfs4_createdata
{
4587 struct rpc_message msg
;
4588 struct nfs4_create_arg arg
;
4589 struct nfs4_create_res res
;
4591 struct nfs_fattr fattr
;
4592 struct nfs4_label
*label
;
4595 static struct nfs4_createdata
*nfs4_alloc_createdata(struct inode
*dir
,
4596 const struct qstr
*name
, struct iattr
*sattr
, u32 ftype
)
4598 struct nfs4_createdata
*data
;
4600 data
= kzalloc(sizeof(*data
), GFP_KERNEL
);
4602 struct nfs_server
*server
= NFS_SERVER(dir
);
4604 data
->label
= nfs4_label_alloc(server
, GFP_KERNEL
);
4605 if (IS_ERR(data
->label
))
4608 data
->msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_CREATE
];
4609 data
->msg
.rpc_argp
= &data
->arg
;
4610 data
->msg
.rpc_resp
= &data
->res
;
4611 data
->arg
.dir_fh
= NFS_FH(dir
);
4612 data
->arg
.server
= server
;
4613 data
->arg
.name
= name
;
4614 data
->arg
.attrs
= sattr
;
4615 data
->arg
.ftype
= ftype
;
4616 data
->arg
.bitmask
= nfs4_bitmask(server
, data
->label
);
4617 data
->arg
.umask
= current_umask();
4618 data
->res
.server
= server
;
4619 data
->res
.fh
= &data
->fh
;
4620 data
->res
.fattr
= &data
->fattr
;
4621 data
->res
.label
= data
->label
;
4622 nfs_fattr_init(data
->res
.fattr
);
4630 static int nfs4_do_create(struct inode
*dir
, struct dentry
*dentry
, struct nfs4_createdata
*data
)
4632 int status
= nfs4_call_sync(NFS_SERVER(dir
)->client
, NFS_SERVER(dir
), &data
->msg
,
4633 &data
->arg
.seq_args
, &data
->res
.seq_res
, 1);
4635 spin_lock(&dir
->i_lock
);
4636 update_changeattr_locked(dir
, &data
->res
.dir_cinfo
,
4637 data
->res
.fattr
->time_start
, 0);
4638 /* Creating a directory bumps nlink in the parent */
4639 if (data
->arg
.ftype
== NF4DIR
)
4640 nfs4_inc_nlink_locked(dir
);
4641 spin_unlock(&dir
->i_lock
);
4642 status
= nfs_instantiate(dentry
, data
->res
.fh
, data
->res
.fattr
, data
->res
.label
);
4647 static void nfs4_free_createdata(struct nfs4_createdata
*data
)
4649 nfs4_label_free(data
->label
);
4653 static int _nfs4_proc_symlink(struct inode
*dir
, struct dentry
*dentry
,
4654 struct page
*page
, unsigned int len
, struct iattr
*sattr
,
4655 struct nfs4_label
*label
)
4657 struct nfs4_createdata
*data
;
4658 int status
= -ENAMETOOLONG
;
4660 if (len
> NFS4_MAXPATHLEN
)
4664 data
= nfs4_alloc_createdata(dir
, &dentry
->d_name
, sattr
, NF4LNK
);
4668 data
->msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SYMLINK
];
4669 data
->arg
.u
.symlink
.pages
= &page
;
4670 data
->arg
.u
.symlink
.len
= len
;
4671 data
->arg
.label
= label
;
4673 status
= nfs4_do_create(dir
, dentry
, data
);
4675 nfs4_free_createdata(data
);
4680 static int nfs4_proc_symlink(struct inode
*dir
, struct dentry
*dentry
,
4681 struct page
*page
, unsigned int len
, struct iattr
*sattr
)
4683 struct nfs4_exception exception
= {
4684 .interruptible
= true,
4686 struct nfs4_label l
, *label
= NULL
;
4689 label
= nfs4_label_init_security(dir
, dentry
, sattr
, &l
);
4692 err
= _nfs4_proc_symlink(dir
, dentry
, page
, len
, sattr
, label
);
4693 trace_nfs4_symlink(dir
, &dentry
->d_name
, err
);
4694 err
= nfs4_handle_exception(NFS_SERVER(dir
), err
,
4696 } while (exception
.retry
);
4698 nfs4_label_release_security(label
);
4702 static int _nfs4_proc_mkdir(struct inode
*dir
, struct dentry
*dentry
,
4703 struct iattr
*sattr
, struct nfs4_label
*label
)
4705 struct nfs4_createdata
*data
;
4706 int status
= -ENOMEM
;
4708 data
= nfs4_alloc_createdata(dir
, &dentry
->d_name
, sattr
, NF4DIR
);
4712 data
->arg
.label
= label
;
4713 status
= nfs4_do_create(dir
, dentry
, data
);
4715 nfs4_free_createdata(data
);
4720 static int nfs4_proc_mkdir(struct inode
*dir
, struct dentry
*dentry
,
4721 struct iattr
*sattr
)
4723 struct nfs_server
*server
= NFS_SERVER(dir
);
4724 struct nfs4_exception exception
= {
4725 .interruptible
= true,
4727 struct nfs4_label l
, *label
= NULL
;
4730 label
= nfs4_label_init_security(dir
, dentry
, sattr
, &l
);
4732 if (!(server
->attr_bitmask
[2] & FATTR4_WORD2_MODE_UMASK
))
4733 sattr
->ia_mode
&= ~current_umask();
4735 err
= _nfs4_proc_mkdir(dir
, dentry
, sattr
, label
);
4736 trace_nfs4_mkdir(dir
, &dentry
->d_name
, err
);
4737 err
= nfs4_handle_exception(NFS_SERVER(dir
), err
,
4739 } while (exception
.retry
);
4740 nfs4_label_release_security(label
);
4745 static int _nfs4_proc_readdir(struct dentry
*dentry
, const struct cred
*cred
,
4746 u64 cookie
, struct page
**pages
, unsigned int count
, bool plus
)
4748 struct inode
*dir
= d_inode(dentry
);
4749 struct nfs4_readdir_arg args
= {
4754 .bitmask
= NFS_SERVER(d_inode(dentry
))->attr_bitmask
,
4757 struct nfs4_readdir_res res
;
4758 struct rpc_message msg
= {
4759 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_READDIR
],
4766 dprintk("%s: dentry = %pd2, cookie = %Lu\n", __func__
,
4768 (unsigned long long)cookie
);
4769 nfs4_setup_readdir(cookie
, NFS_I(dir
)->cookieverf
, dentry
, &args
);
4770 res
.pgbase
= args
.pgbase
;
4771 status
= nfs4_call_sync(NFS_SERVER(dir
)->client
, NFS_SERVER(dir
), &msg
, &args
.seq_args
, &res
.seq_res
, 0);
4773 memcpy(NFS_I(dir
)->cookieverf
, res
.verifier
.data
, NFS4_VERIFIER_SIZE
);
4774 status
+= args
.pgbase
;
4777 nfs_invalidate_atime(dir
);
4779 dprintk("%s: returns %d\n", __func__
, status
);
4783 static int nfs4_proc_readdir(struct dentry
*dentry
, const struct cred
*cred
,
4784 u64 cookie
, struct page
**pages
, unsigned int count
, bool plus
)
4786 struct nfs4_exception exception
= {
4787 .interruptible
= true,
4791 err
= _nfs4_proc_readdir(dentry
, cred
, cookie
,
4792 pages
, count
, plus
);
4793 trace_nfs4_readdir(d_inode(dentry
), err
);
4794 err
= nfs4_handle_exception(NFS_SERVER(d_inode(dentry
)), err
,
4796 } while (exception
.retry
);
4800 static int _nfs4_proc_mknod(struct inode
*dir
, struct dentry
*dentry
,
4801 struct iattr
*sattr
, struct nfs4_label
*label
, dev_t rdev
)
4803 struct nfs4_createdata
*data
;
4804 int mode
= sattr
->ia_mode
;
4805 int status
= -ENOMEM
;
4807 data
= nfs4_alloc_createdata(dir
, &dentry
->d_name
, sattr
, NF4SOCK
);
4812 data
->arg
.ftype
= NF4FIFO
;
4813 else if (S_ISBLK(mode
)) {
4814 data
->arg
.ftype
= NF4BLK
;
4815 data
->arg
.u
.device
.specdata1
= MAJOR(rdev
);
4816 data
->arg
.u
.device
.specdata2
= MINOR(rdev
);
4818 else if (S_ISCHR(mode
)) {
4819 data
->arg
.ftype
= NF4CHR
;
4820 data
->arg
.u
.device
.specdata1
= MAJOR(rdev
);
4821 data
->arg
.u
.device
.specdata2
= MINOR(rdev
);
4822 } else if (!S_ISSOCK(mode
)) {
4827 data
->arg
.label
= label
;
4828 status
= nfs4_do_create(dir
, dentry
, data
);
4830 nfs4_free_createdata(data
);
4835 static int nfs4_proc_mknod(struct inode
*dir
, struct dentry
*dentry
,
4836 struct iattr
*sattr
, dev_t rdev
)
4838 struct nfs_server
*server
= NFS_SERVER(dir
);
4839 struct nfs4_exception exception
= {
4840 .interruptible
= true,
4842 struct nfs4_label l
, *label
= NULL
;
4845 label
= nfs4_label_init_security(dir
, dentry
, sattr
, &l
);
4847 if (!(server
->attr_bitmask
[2] & FATTR4_WORD2_MODE_UMASK
))
4848 sattr
->ia_mode
&= ~current_umask();
4850 err
= _nfs4_proc_mknod(dir
, dentry
, sattr
, label
, rdev
);
4851 trace_nfs4_mknod(dir
, &dentry
->d_name
, err
);
4852 err
= nfs4_handle_exception(NFS_SERVER(dir
), err
,
4854 } while (exception
.retry
);
4856 nfs4_label_release_security(label
);
4861 static int _nfs4_proc_statfs(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
4862 struct nfs_fsstat
*fsstat
)
4864 struct nfs4_statfs_arg args
= {
4866 .bitmask
= server
->attr_bitmask
,
4868 struct nfs4_statfs_res res
= {
4871 struct rpc_message msg
= {
4872 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_STATFS
],
4877 nfs_fattr_init(fsstat
->fattr
);
4878 return nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
4881 static int nfs4_proc_statfs(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fsstat
*fsstat
)
4883 struct nfs4_exception exception
= {
4884 .interruptible
= true,
4888 err
= nfs4_handle_exception(server
,
4889 _nfs4_proc_statfs(server
, fhandle
, fsstat
),
4891 } while (exception
.retry
);
4895 static int _nfs4_do_fsinfo(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
4896 struct nfs_fsinfo
*fsinfo
)
4898 struct nfs4_fsinfo_arg args
= {
4900 .bitmask
= server
->attr_bitmask
,
4902 struct nfs4_fsinfo_res res
= {
4905 struct rpc_message msg
= {
4906 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_FSINFO
],
4911 return nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
4914 static int nfs4_do_fsinfo(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fsinfo
*fsinfo
)
4916 struct nfs4_exception exception
= {
4917 .interruptible
= true,
4919 unsigned long now
= jiffies
;
4923 err
= _nfs4_do_fsinfo(server
, fhandle
, fsinfo
);
4924 trace_nfs4_fsinfo(server
, fhandle
, fsinfo
->fattr
, err
);
4926 nfs4_set_lease_period(server
->nfs_client
,
4927 fsinfo
->lease_time
* HZ
,
4931 err
= nfs4_handle_exception(server
, err
, &exception
);
4932 } while (exception
.retry
);
4936 static int nfs4_proc_fsinfo(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fsinfo
*fsinfo
)
4940 nfs_fattr_init(fsinfo
->fattr
);
4941 error
= nfs4_do_fsinfo(server
, fhandle
, fsinfo
);
4943 /* block layout checks this! */
4944 server
->pnfs_blksize
= fsinfo
->blksize
;
4945 set_pnfs_layoutdriver(server
, fhandle
, fsinfo
);
4951 static int _nfs4_proc_pathconf(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
4952 struct nfs_pathconf
*pathconf
)
4954 struct nfs4_pathconf_arg args
= {
4956 .bitmask
= server
->attr_bitmask
,
4958 struct nfs4_pathconf_res res
= {
4959 .pathconf
= pathconf
,
4961 struct rpc_message msg
= {
4962 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_PATHCONF
],
4967 /* None of the pathconf attributes are mandatory to implement */
4968 if ((args
.bitmask
[0] & nfs4_pathconf_bitmap
[0]) == 0) {
4969 memset(pathconf
, 0, sizeof(*pathconf
));
4973 nfs_fattr_init(pathconf
->fattr
);
4974 return nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
4977 static int nfs4_proc_pathconf(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
4978 struct nfs_pathconf
*pathconf
)
4980 struct nfs4_exception exception
= {
4981 .interruptible
= true,
4986 err
= nfs4_handle_exception(server
,
4987 _nfs4_proc_pathconf(server
, fhandle
, pathconf
),
4989 } while (exception
.retry
);
4993 int nfs4_set_rw_stateid(nfs4_stateid
*stateid
,
4994 const struct nfs_open_context
*ctx
,
4995 const struct nfs_lock_context
*l_ctx
,
4998 return nfs4_select_rw_stateid(ctx
->state
, fmode
, l_ctx
, stateid
, NULL
);
5000 EXPORT_SYMBOL_GPL(nfs4_set_rw_stateid
);
5002 static bool nfs4_stateid_is_current(nfs4_stateid
*stateid
,
5003 const struct nfs_open_context
*ctx
,
5004 const struct nfs_lock_context
*l_ctx
,
5007 nfs4_stateid current_stateid
;
5009 /* If the current stateid represents a lost lock, then exit */
5010 if (nfs4_set_rw_stateid(¤t_stateid
, ctx
, l_ctx
, fmode
) == -EIO
)
5012 return nfs4_stateid_match(stateid
, ¤t_stateid
);
5015 static bool nfs4_error_stateid_expired(int err
)
5018 case -NFS4ERR_DELEG_REVOKED
:
5019 case -NFS4ERR_ADMIN_REVOKED
:
5020 case -NFS4ERR_BAD_STATEID
:
5021 case -NFS4ERR_STALE_STATEID
:
5022 case -NFS4ERR_OLD_STATEID
:
5023 case -NFS4ERR_OPENMODE
:
5024 case -NFS4ERR_EXPIRED
:
5030 static int nfs4_read_done_cb(struct rpc_task
*task
, struct nfs_pgio_header
*hdr
)
5032 struct nfs_server
*server
= NFS_SERVER(hdr
->inode
);
5034 trace_nfs4_read(hdr
, task
->tk_status
);
5035 if (task
->tk_status
< 0) {
5036 struct nfs4_exception exception
= {
5037 .inode
= hdr
->inode
,
5038 .state
= hdr
->args
.context
->state
,
5039 .stateid
= &hdr
->args
.stateid
,
5041 task
->tk_status
= nfs4_async_handle_exception(task
,
5042 server
, task
->tk_status
, &exception
);
5043 if (exception
.retry
) {
5044 rpc_restart_call_prepare(task
);
5049 if (task
->tk_status
> 0)
5050 renew_lease(server
, hdr
->timestamp
);
5054 static bool nfs4_read_stateid_changed(struct rpc_task
*task
,
5055 struct nfs_pgio_args
*args
)
5058 if (!nfs4_error_stateid_expired(task
->tk_status
) ||
5059 nfs4_stateid_is_current(&args
->stateid
,
5064 rpc_restart_call_prepare(task
);
5068 static int nfs4_read_done(struct rpc_task
*task
, struct nfs_pgio_header
*hdr
)
5071 dprintk("--> %s\n", __func__
);
5073 if (!nfs4_sequence_done(task
, &hdr
->res
.seq_res
))
5075 if (nfs4_read_stateid_changed(task
, &hdr
->args
))
5077 if (task
->tk_status
> 0)
5078 nfs_invalidate_atime(hdr
->inode
);
5079 return hdr
->pgio_done_cb
? hdr
->pgio_done_cb(task
, hdr
) :
5080 nfs4_read_done_cb(task
, hdr
);
5083 static void nfs4_proc_read_setup(struct nfs_pgio_header
*hdr
,
5084 struct rpc_message
*msg
)
5086 hdr
->timestamp
= jiffies
;
5087 if (!hdr
->pgio_done_cb
)
5088 hdr
->pgio_done_cb
= nfs4_read_done_cb
;
5089 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_READ
];
5090 nfs4_init_sequence(&hdr
->args
.seq_args
, &hdr
->res
.seq_res
, 0, 0);
5093 static int nfs4_proc_pgio_rpc_prepare(struct rpc_task
*task
,
5094 struct nfs_pgio_header
*hdr
)
5096 if (nfs4_setup_sequence(NFS_SERVER(hdr
->inode
)->nfs_client
,
5097 &hdr
->args
.seq_args
,
5101 if (nfs4_set_rw_stateid(&hdr
->args
.stateid
, hdr
->args
.context
,
5102 hdr
->args
.lock_context
,
5103 hdr
->rw_mode
) == -EIO
)
5105 if (unlikely(test_bit(NFS_CONTEXT_BAD
, &hdr
->args
.context
->flags
)))
5110 static int nfs4_write_done_cb(struct rpc_task
*task
,
5111 struct nfs_pgio_header
*hdr
)
5113 struct inode
*inode
= hdr
->inode
;
5115 trace_nfs4_write(hdr
, task
->tk_status
);
5116 if (task
->tk_status
< 0) {
5117 struct nfs4_exception exception
= {
5118 .inode
= hdr
->inode
,
5119 .state
= hdr
->args
.context
->state
,
5120 .stateid
= &hdr
->args
.stateid
,
5122 task
->tk_status
= nfs4_async_handle_exception(task
,
5123 NFS_SERVER(inode
), task
->tk_status
,
5125 if (exception
.retry
) {
5126 rpc_restart_call_prepare(task
);
5130 if (task
->tk_status
>= 0) {
5131 renew_lease(NFS_SERVER(inode
), hdr
->timestamp
);
5132 nfs_writeback_update_inode(hdr
);
5137 static bool nfs4_write_stateid_changed(struct rpc_task
*task
,
5138 struct nfs_pgio_args
*args
)
5141 if (!nfs4_error_stateid_expired(task
->tk_status
) ||
5142 nfs4_stateid_is_current(&args
->stateid
,
5147 rpc_restart_call_prepare(task
);
5151 static int nfs4_write_done(struct rpc_task
*task
, struct nfs_pgio_header
*hdr
)
5153 if (!nfs4_sequence_done(task
, &hdr
->res
.seq_res
))
5155 if (nfs4_write_stateid_changed(task
, &hdr
->args
))
5157 return hdr
->pgio_done_cb
? hdr
->pgio_done_cb(task
, hdr
) :
5158 nfs4_write_done_cb(task
, hdr
);
5162 bool nfs4_write_need_cache_consistency_data(struct nfs_pgio_header
*hdr
)
5164 /* Don't request attributes for pNFS or O_DIRECT writes */
5165 if (hdr
->ds_clp
!= NULL
|| hdr
->dreq
!= NULL
)
5167 /* Otherwise, request attributes if and only if we don't hold
5170 return nfs4_have_delegation(hdr
->inode
, FMODE_READ
) == 0;
5173 static void nfs4_proc_write_setup(struct nfs_pgio_header
*hdr
,
5174 struct rpc_message
*msg
,
5175 struct rpc_clnt
**clnt
)
5177 struct nfs_server
*server
= NFS_SERVER(hdr
->inode
);
5179 if (!nfs4_write_need_cache_consistency_data(hdr
)) {
5180 hdr
->args
.bitmask
= NULL
;
5181 hdr
->res
.fattr
= NULL
;
5183 hdr
->args
.bitmask
= server
->cache_consistency_bitmask
;
5185 if (!hdr
->pgio_done_cb
)
5186 hdr
->pgio_done_cb
= nfs4_write_done_cb
;
5187 hdr
->res
.server
= server
;
5188 hdr
->timestamp
= jiffies
;
5190 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_WRITE
];
5191 nfs4_init_sequence(&hdr
->args
.seq_args
, &hdr
->res
.seq_res
, 1, 0);
5192 nfs4_state_protect_write(server
->nfs_client
, clnt
, msg
, hdr
);
5195 static void nfs4_proc_commit_rpc_prepare(struct rpc_task
*task
, struct nfs_commit_data
*data
)
5197 nfs4_setup_sequence(NFS_SERVER(data
->inode
)->nfs_client
,
5198 &data
->args
.seq_args
,
5203 static int nfs4_commit_done_cb(struct rpc_task
*task
, struct nfs_commit_data
*data
)
5205 struct inode
*inode
= data
->inode
;
5207 trace_nfs4_commit(data
, task
->tk_status
);
5208 if (nfs4_async_handle_error(task
, NFS_SERVER(inode
),
5209 NULL
, NULL
) == -EAGAIN
) {
5210 rpc_restart_call_prepare(task
);
5216 static int nfs4_commit_done(struct rpc_task
*task
, struct nfs_commit_data
*data
)
5218 if (!nfs4_sequence_done(task
, &data
->res
.seq_res
))
5220 return data
->commit_done_cb(task
, data
);
5223 static void nfs4_proc_commit_setup(struct nfs_commit_data
*data
, struct rpc_message
*msg
,
5224 struct rpc_clnt
**clnt
)
5226 struct nfs_server
*server
= NFS_SERVER(data
->inode
);
5228 if (data
->commit_done_cb
== NULL
)
5229 data
->commit_done_cb
= nfs4_commit_done_cb
;
5230 data
->res
.server
= server
;
5231 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_COMMIT
];
5232 nfs4_init_sequence(&data
->args
.seq_args
, &data
->res
.seq_res
, 1, 0);
5233 nfs4_state_protect(server
->nfs_client
, NFS_SP4_MACH_CRED_COMMIT
, clnt
, msg
);
5236 static int _nfs4_proc_commit(struct file
*dst
, struct nfs_commitargs
*args
,
5237 struct nfs_commitres
*res
)
5239 struct inode
*dst_inode
= file_inode(dst
);
5240 struct nfs_server
*server
= NFS_SERVER(dst_inode
);
5241 struct rpc_message msg
= {
5242 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_COMMIT
],
5247 args
->fh
= NFS_FH(dst_inode
);
5248 return nfs4_call_sync(server
->client
, server
, &msg
,
5249 &args
->seq_args
, &res
->seq_res
, 1);
5252 int nfs4_proc_commit(struct file
*dst
, __u64 offset
, __u32 count
, struct nfs_commitres
*res
)
5254 struct nfs_commitargs args
= {
5258 struct nfs_server
*dst_server
= NFS_SERVER(file_inode(dst
));
5259 struct nfs4_exception exception
= { };
5263 status
= _nfs4_proc_commit(dst
, &args
, res
);
5264 status
= nfs4_handle_exception(dst_server
, status
, &exception
);
5265 } while (exception
.retry
);
5270 struct nfs4_renewdata
{
5271 struct nfs_client
*client
;
5272 unsigned long timestamp
;
5276 * nfs4_proc_async_renew(): This is not one of the nfs_rpc_ops; it is a special
5277 * standalone procedure for queueing an asynchronous RENEW.
5279 static void nfs4_renew_release(void *calldata
)
5281 struct nfs4_renewdata
*data
= calldata
;
5282 struct nfs_client
*clp
= data
->client
;
5284 if (refcount_read(&clp
->cl_count
) > 1)
5285 nfs4_schedule_state_renewal(clp
);
5286 nfs_put_client(clp
);
5290 static void nfs4_renew_done(struct rpc_task
*task
, void *calldata
)
5292 struct nfs4_renewdata
*data
= calldata
;
5293 struct nfs_client
*clp
= data
->client
;
5294 unsigned long timestamp
= data
->timestamp
;
5296 trace_nfs4_renew_async(clp
, task
->tk_status
);
5297 switch (task
->tk_status
) {
5300 case -NFS4ERR_LEASE_MOVED
:
5301 nfs4_schedule_lease_moved_recovery(clp
);
5304 /* Unless we're shutting down, schedule state recovery! */
5305 if (test_bit(NFS_CS_RENEWD
, &clp
->cl_res_state
) == 0)
5307 if (task
->tk_status
!= NFS4ERR_CB_PATH_DOWN
) {
5308 nfs4_schedule_lease_recovery(clp
);
5311 nfs4_schedule_path_down_recovery(clp
);
5313 do_renew_lease(clp
, timestamp
);
5316 static const struct rpc_call_ops nfs4_renew_ops
= {
5317 .rpc_call_done
= nfs4_renew_done
,
5318 .rpc_release
= nfs4_renew_release
,
5321 static int nfs4_proc_async_renew(struct nfs_client
*clp
, const struct cred
*cred
, unsigned renew_flags
)
5323 struct rpc_message msg
= {
5324 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RENEW
],
5328 struct nfs4_renewdata
*data
;
5330 if (renew_flags
== 0)
5332 if (!refcount_inc_not_zero(&clp
->cl_count
))
5334 data
= kmalloc(sizeof(*data
), GFP_NOFS
);
5336 nfs_put_client(clp
);
5340 data
->timestamp
= jiffies
;
5341 return rpc_call_async(clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
,
5342 &nfs4_renew_ops
, data
);
5345 static int nfs4_proc_renew(struct nfs_client
*clp
, const struct cred
*cred
)
5347 struct rpc_message msg
= {
5348 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RENEW
],
5352 unsigned long now
= jiffies
;
5355 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
5358 do_renew_lease(clp
, now
);
5362 static inline int nfs4_server_supports_acls(struct nfs_server
*server
)
5364 return server
->caps
& NFS_CAP_ACLS
;
5367 /* Assuming that XATTR_SIZE_MAX is a multiple of PAGE_SIZE, and that
5368 * it's OK to put sizeof(void) * (XATTR_SIZE_MAX/PAGE_SIZE) bytes on
5371 #define NFS4ACL_MAXPAGES DIV_ROUND_UP(XATTR_SIZE_MAX, PAGE_SIZE)
5373 static int buf_to_pages_noslab(const void *buf
, size_t buflen
,
5374 struct page
**pages
)
5376 struct page
*newpage
, **spages
;
5382 len
= min_t(size_t, PAGE_SIZE
, buflen
);
5383 newpage
= alloc_page(GFP_KERNEL
);
5385 if (newpage
== NULL
)
5387 memcpy(page_address(newpage
), buf
, len
);
5392 } while (buflen
!= 0);
5398 __free_page(spages
[rc
-1]);
5402 struct nfs4_cached_acl
{
5408 static void nfs4_set_cached_acl(struct inode
*inode
, struct nfs4_cached_acl
*acl
)
5410 struct nfs_inode
*nfsi
= NFS_I(inode
);
5412 spin_lock(&inode
->i_lock
);
5413 kfree(nfsi
->nfs4_acl
);
5414 nfsi
->nfs4_acl
= acl
;
5415 spin_unlock(&inode
->i_lock
);
5418 static void nfs4_zap_acl_attr(struct inode
*inode
)
5420 nfs4_set_cached_acl(inode
, NULL
);
5423 static inline ssize_t
nfs4_read_cached_acl(struct inode
*inode
, char *buf
, size_t buflen
)
5425 struct nfs_inode
*nfsi
= NFS_I(inode
);
5426 struct nfs4_cached_acl
*acl
;
5429 spin_lock(&inode
->i_lock
);
5430 acl
= nfsi
->nfs4_acl
;
5433 if (buf
== NULL
) /* user is just asking for length */
5435 if (acl
->cached
== 0)
5437 ret
= -ERANGE
; /* see getxattr(2) man page */
5438 if (acl
->len
> buflen
)
5440 memcpy(buf
, acl
->data
, acl
->len
);
5444 spin_unlock(&inode
->i_lock
);
5448 static void nfs4_write_cached_acl(struct inode
*inode
, struct page
**pages
, size_t pgbase
, size_t acl_len
)
5450 struct nfs4_cached_acl
*acl
;
5451 size_t buflen
= sizeof(*acl
) + acl_len
;
5453 if (buflen
<= PAGE_SIZE
) {
5454 acl
= kmalloc(buflen
, GFP_KERNEL
);
5458 _copy_from_pages(acl
->data
, pages
, pgbase
, acl_len
);
5460 acl
= kmalloc(sizeof(*acl
), GFP_KERNEL
);
5467 nfs4_set_cached_acl(inode
, acl
);
5471 * The getxattr API returns the required buffer length when called with a
5472 * NULL buf. The NFSv4 acl tool then calls getxattr again after allocating
5473 * the required buf. On a NULL buf, we send a page of data to the server
5474 * guessing that the ACL request can be serviced by a page. If so, we cache
5475 * up to the page of ACL data, and the 2nd call to getxattr is serviced by
5476 * the cache. If not so, we throw away the page, and cache the required
5477 * length. The next getxattr call will then produce another round trip to
5478 * the server, this time with the input buf of the required size.
5480 static ssize_t
__nfs4_get_acl_uncached(struct inode
*inode
, void *buf
, size_t buflen
)
5482 struct page
*pages
[NFS4ACL_MAXPAGES
+ 1] = {NULL
, };
5483 struct nfs_getaclargs args
= {
5484 .fh
= NFS_FH(inode
),
5488 struct nfs_getaclres res
= {
5491 struct rpc_message msg
= {
5492 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GETACL
],
5496 unsigned int npages
= DIV_ROUND_UP(buflen
, PAGE_SIZE
) + 1;
5497 int ret
= -ENOMEM
, i
;
5499 if (npages
> ARRAY_SIZE(pages
))
5502 for (i
= 0; i
< npages
; i
++) {
5503 pages
[i
] = alloc_page(GFP_KERNEL
);
5508 /* for decoding across pages */
5509 res
.acl_scratch
= alloc_page(GFP_KERNEL
);
5510 if (!res
.acl_scratch
)
5513 args
.acl_len
= npages
* PAGE_SIZE
;
5515 dprintk("%s buf %p buflen %zu npages %d args.acl_len %zu\n",
5516 __func__
, buf
, buflen
, npages
, args
.acl_len
);
5517 ret
= nfs4_call_sync(NFS_SERVER(inode
)->client
, NFS_SERVER(inode
),
5518 &msg
, &args
.seq_args
, &res
.seq_res
, 0);
5522 /* Handle the case where the passed-in buffer is too short */
5523 if (res
.acl_flags
& NFS4_ACL_TRUNC
) {
5524 /* Did the user only issue a request for the acl length? */
5530 nfs4_write_cached_acl(inode
, pages
, res
.acl_data_offset
, res
.acl_len
);
5532 if (res
.acl_len
> buflen
) {
5536 _copy_from_pages(buf
, pages
, res
.acl_data_offset
, res
.acl_len
);
5541 for (i
= 0; i
< npages
; i
++)
5543 __free_page(pages
[i
]);
5544 if (res
.acl_scratch
)
5545 __free_page(res
.acl_scratch
);
5549 static ssize_t
nfs4_get_acl_uncached(struct inode
*inode
, void *buf
, size_t buflen
)
5551 struct nfs4_exception exception
= {
5552 .interruptible
= true,
5556 ret
= __nfs4_get_acl_uncached(inode
, buf
, buflen
);
5557 trace_nfs4_get_acl(inode
, ret
);
5560 ret
= nfs4_handle_exception(NFS_SERVER(inode
), ret
, &exception
);
5561 } while (exception
.retry
);
5565 static ssize_t
nfs4_proc_get_acl(struct inode
*inode
, void *buf
, size_t buflen
)
5567 struct nfs_server
*server
= NFS_SERVER(inode
);
5570 if (!nfs4_server_supports_acls(server
))
5572 ret
= nfs_revalidate_inode(server
, inode
);
5575 if (NFS_I(inode
)->cache_validity
& NFS_INO_INVALID_ACL
)
5576 nfs_zap_acl_cache(inode
);
5577 ret
= nfs4_read_cached_acl(inode
, buf
, buflen
);
5579 /* -ENOENT is returned if there is no ACL or if there is an ACL
5580 * but no cached acl data, just the acl length */
5582 return nfs4_get_acl_uncached(inode
, buf
, buflen
);
5585 static int __nfs4_proc_set_acl(struct inode
*inode
, const void *buf
, size_t buflen
)
5587 struct nfs_server
*server
= NFS_SERVER(inode
);
5588 struct page
*pages
[NFS4ACL_MAXPAGES
];
5589 struct nfs_setaclargs arg
= {
5590 .fh
= NFS_FH(inode
),
5594 struct nfs_setaclres res
;
5595 struct rpc_message msg
= {
5596 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETACL
],
5600 unsigned int npages
= DIV_ROUND_UP(buflen
, PAGE_SIZE
);
5603 if (!nfs4_server_supports_acls(server
))
5605 if (npages
> ARRAY_SIZE(pages
))
5607 i
= buf_to_pages_noslab(buf
, buflen
, arg
.acl_pages
);
5610 nfs4_inode_make_writeable(inode
);
5611 ret
= nfs4_call_sync(server
->client
, server
, &msg
, &arg
.seq_args
, &res
.seq_res
, 1);
5614 * Free each page after tx, so the only ref left is
5615 * held by the network stack
5618 put_page(pages
[i
-1]);
5621 * Acl update can result in inode attribute update.
5622 * so mark the attribute cache invalid.
5624 spin_lock(&inode
->i_lock
);
5625 NFS_I(inode
)->cache_validity
|= NFS_INO_INVALID_CHANGE
5626 | NFS_INO_INVALID_CTIME
5627 | NFS_INO_REVAL_FORCED
;
5628 spin_unlock(&inode
->i_lock
);
5629 nfs_access_zap_cache(inode
);
5630 nfs_zap_acl_cache(inode
);
5634 static int nfs4_proc_set_acl(struct inode
*inode
, const void *buf
, size_t buflen
)
5636 struct nfs4_exception exception
= { };
5639 err
= __nfs4_proc_set_acl(inode
, buf
, buflen
);
5640 trace_nfs4_set_acl(inode
, err
);
5641 err
= nfs4_handle_exception(NFS_SERVER(inode
), err
,
5643 } while (exception
.retry
);
5647 #ifdef CONFIG_NFS_V4_SECURITY_LABEL
5648 static int _nfs4_get_security_label(struct inode
*inode
, void *buf
,
5651 struct nfs_server
*server
= NFS_SERVER(inode
);
5652 struct nfs_fattr fattr
;
5653 struct nfs4_label label
= {0, 0, buflen
, buf
};
5655 u32 bitmask
[3] = { 0, 0, FATTR4_WORD2_SECURITY_LABEL
};
5656 struct nfs4_getattr_arg arg
= {
5657 .fh
= NFS_FH(inode
),
5660 struct nfs4_getattr_res res
= {
5665 struct rpc_message msg
= {
5666 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GETATTR
],
5672 nfs_fattr_init(&fattr
);
5674 ret
= nfs4_call_sync(server
->client
, server
, &msg
, &arg
.seq_args
, &res
.seq_res
, 0);
5677 if (!(fattr
.valid
& NFS_ATTR_FATTR_V4_SECURITY_LABEL
))
5679 if (buflen
< label
.len
)
5684 static int nfs4_get_security_label(struct inode
*inode
, void *buf
,
5687 struct nfs4_exception exception
= {
5688 .interruptible
= true,
5692 if (!nfs_server_capable(inode
, NFS_CAP_SECURITY_LABEL
))
5696 err
= _nfs4_get_security_label(inode
, buf
, buflen
);
5697 trace_nfs4_get_security_label(inode
, err
);
5698 err
= nfs4_handle_exception(NFS_SERVER(inode
), err
,
5700 } while (exception
.retry
);
5704 static int _nfs4_do_set_security_label(struct inode
*inode
,
5705 struct nfs4_label
*ilabel
,
5706 struct nfs_fattr
*fattr
,
5707 struct nfs4_label
*olabel
)
5710 struct iattr sattr
= {0};
5711 struct nfs_server
*server
= NFS_SERVER(inode
);
5712 const u32 bitmask
[3] = { 0, 0, FATTR4_WORD2_SECURITY_LABEL
};
5713 struct nfs_setattrargs arg
= {
5714 .fh
= NFS_FH(inode
),
5720 struct nfs_setattrres res
= {
5725 struct rpc_message msg
= {
5726 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETATTR
],
5732 nfs4_stateid_copy(&arg
.stateid
, &zero_stateid
);
5734 status
= nfs4_call_sync(server
->client
, server
, &msg
, &arg
.seq_args
, &res
.seq_res
, 1);
5736 dprintk("%s failed: %d\n", __func__
, status
);
5741 static int nfs4_do_set_security_label(struct inode
*inode
,
5742 struct nfs4_label
*ilabel
,
5743 struct nfs_fattr
*fattr
,
5744 struct nfs4_label
*olabel
)
5746 struct nfs4_exception exception
= { };
5750 err
= _nfs4_do_set_security_label(inode
, ilabel
,
5752 trace_nfs4_set_security_label(inode
, err
);
5753 err
= nfs4_handle_exception(NFS_SERVER(inode
), err
,
5755 } while (exception
.retry
);
5760 nfs4_set_security_label(struct inode
*inode
, const void *buf
, size_t buflen
)
5762 struct nfs4_label ilabel
, *olabel
= NULL
;
5763 struct nfs_fattr fattr
;
5766 if (!nfs_server_capable(inode
, NFS_CAP_SECURITY_LABEL
))
5769 nfs_fattr_init(&fattr
);
5773 ilabel
.label
= (char *)buf
;
5774 ilabel
.len
= buflen
;
5776 olabel
= nfs4_label_alloc(NFS_SERVER(inode
), GFP_KERNEL
);
5777 if (IS_ERR(olabel
)) {
5778 status
= -PTR_ERR(olabel
);
5782 status
= nfs4_do_set_security_label(inode
, &ilabel
, &fattr
, olabel
);
5784 nfs_setsecurity(inode
, &fattr
, olabel
);
5786 nfs4_label_free(olabel
);
5790 #endif /* CONFIG_NFS_V4_SECURITY_LABEL */
5793 static void nfs4_init_boot_verifier(const struct nfs_client
*clp
,
5794 nfs4_verifier
*bootverf
)
5798 if (test_bit(NFS4CLNT_PURGE_STATE
, &clp
->cl_state
)) {
5799 /* An impossible timestamp guarantees this value
5800 * will never match a generated boot time. */
5801 verf
[0] = cpu_to_be32(U32_MAX
);
5802 verf
[1] = cpu_to_be32(U32_MAX
);
5804 struct nfs_net
*nn
= net_generic(clp
->cl_net
, nfs_net_id
);
5805 u64 ns
= ktime_to_ns(nn
->boot_time
);
5807 verf
[0] = cpu_to_be32(ns
>> 32);
5808 verf
[1] = cpu_to_be32(ns
);
5810 memcpy(bootverf
->data
, verf
, sizeof(bootverf
->data
));
5814 nfs4_init_nonuniform_client_string(struct nfs_client
*clp
)
5819 if (clp
->cl_owner_id
!= NULL
)
5824 strlen(clp
->cl_rpcclient
->cl_nodename
) +
5826 strlen(rpc_peeraddr2str(clp
->cl_rpcclient
, RPC_DISPLAY_ADDR
)) +
5829 if (nfs4_client_id_uniquifier
[0] != '\0')
5830 len
+= strlen(nfs4_client_id_uniquifier
) + 1;
5831 if (len
> NFS4_OPAQUE_LIMIT
+ 1)
5835 * Since this string is allocated at mount time, and held until the
5836 * nfs_client is destroyed, we can use GFP_KERNEL here w/o worrying
5837 * about a memory-reclaim deadlock.
5839 str
= kmalloc(len
, GFP_KERNEL
);
5844 if (nfs4_client_id_uniquifier
[0] != '\0')
5845 scnprintf(str
, len
, "Linux NFSv4.0 %s/%s/%s",
5846 clp
->cl_rpcclient
->cl_nodename
,
5847 nfs4_client_id_uniquifier
,
5848 rpc_peeraddr2str(clp
->cl_rpcclient
,
5851 scnprintf(str
, len
, "Linux NFSv4.0 %s/%s",
5852 clp
->cl_rpcclient
->cl_nodename
,
5853 rpc_peeraddr2str(clp
->cl_rpcclient
,
5857 clp
->cl_owner_id
= str
;
5862 nfs4_init_uniquifier_client_string(struct nfs_client
*clp
)
5867 len
= 10 + 10 + 1 + 10 + 1 +
5868 strlen(nfs4_client_id_uniquifier
) + 1 +
5869 strlen(clp
->cl_rpcclient
->cl_nodename
) + 1;
5871 if (len
> NFS4_OPAQUE_LIMIT
+ 1)
5875 * Since this string is allocated at mount time, and held until the
5876 * nfs_client is destroyed, we can use GFP_KERNEL here w/o worrying
5877 * about a memory-reclaim deadlock.
5879 str
= kmalloc(len
, GFP_KERNEL
);
5883 scnprintf(str
, len
, "Linux NFSv%u.%u %s/%s",
5884 clp
->rpc_ops
->version
, clp
->cl_minorversion
,
5885 nfs4_client_id_uniquifier
,
5886 clp
->cl_rpcclient
->cl_nodename
);
5887 clp
->cl_owner_id
= str
;
5892 nfs4_init_uniform_client_string(struct nfs_client
*clp
)
5897 if (clp
->cl_owner_id
!= NULL
)
5900 if (nfs4_client_id_uniquifier
[0] != '\0')
5901 return nfs4_init_uniquifier_client_string(clp
);
5903 len
= 10 + 10 + 1 + 10 + 1 +
5904 strlen(clp
->cl_rpcclient
->cl_nodename
) + 1;
5906 if (len
> NFS4_OPAQUE_LIMIT
+ 1)
5910 * Since this string is allocated at mount time, and held until the
5911 * nfs_client is destroyed, we can use GFP_KERNEL here w/o worrying
5912 * about a memory-reclaim deadlock.
5914 str
= kmalloc(len
, GFP_KERNEL
);
5918 scnprintf(str
, len
, "Linux NFSv%u.%u %s",
5919 clp
->rpc_ops
->version
, clp
->cl_minorversion
,
5920 clp
->cl_rpcclient
->cl_nodename
);
5921 clp
->cl_owner_id
= str
;
5926 * nfs4_callback_up_net() starts only "tcp" and "tcp6" callback
5927 * services. Advertise one based on the address family of the
5931 nfs4_init_callback_netid(const struct nfs_client
*clp
, char *buf
, size_t len
)
5933 if (strchr(clp
->cl_ipaddr
, ':') != NULL
)
5934 return scnprintf(buf
, len
, "tcp6");
5936 return scnprintf(buf
, len
, "tcp");
5939 static void nfs4_setclientid_done(struct rpc_task
*task
, void *calldata
)
5941 struct nfs4_setclientid
*sc
= calldata
;
5943 if (task
->tk_status
== 0)
5944 sc
->sc_cred
= get_rpccred(task
->tk_rqstp
->rq_cred
);
5947 static const struct rpc_call_ops nfs4_setclientid_ops
= {
5948 .rpc_call_done
= nfs4_setclientid_done
,
5952 * nfs4_proc_setclientid - Negotiate client ID
5953 * @clp: state data structure
5954 * @program: RPC program for NFSv4 callback service
5955 * @port: IP port number for NFS4 callback service
5956 * @cred: credential to use for this call
5957 * @res: where to place the result
5959 * Returns zero, a negative errno, or a negative NFS4ERR status code.
5961 int nfs4_proc_setclientid(struct nfs_client
*clp
, u32 program
,
5962 unsigned short port
, const struct cred
*cred
,
5963 struct nfs4_setclientid_res
*res
)
5965 nfs4_verifier sc_verifier
;
5966 struct nfs4_setclientid setclientid
= {
5967 .sc_verifier
= &sc_verifier
,
5971 struct rpc_message msg
= {
5972 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETCLIENTID
],
5973 .rpc_argp
= &setclientid
,
5977 struct rpc_task
*task
;
5978 struct rpc_task_setup task_setup_data
= {
5979 .rpc_client
= clp
->cl_rpcclient
,
5980 .rpc_message
= &msg
,
5981 .callback_ops
= &nfs4_setclientid_ops
,
5982 .callback_data
= &setclientid
,
5983 .flags
= RPC_TASK_TIMEOUT
,
5987 /* nfs_client_id4 */
5988 nfs4_init_boot_verifier(clp
, &sc_verifier
);
5990 if (test_bit(NFS_CS_MIGRATION
, &clp
->cl_flags
))
5991 status
= nfs4_init_uniform_client_string(clp
);
5993 status
= nfs4_init_nonuniform_client_string(clp
);
5999 setclientid
.sc_netid_len
=
6000 nfs4_init_callback_netid(clp
,
6001 setclientid
.sc_netid
,
6002 sizeof(setclientid
.sc_netid
));
6003 setclientid
.sc_uaddr_len
= scnprintf(setclientid
.sc_uaddr
,
6004 sizeof(setclientid
.sc_uaddr
), "%s.%u.%u",
6005 clp
->cl_ipaddr
, port
>> 8, port
& 255);
6007 dprintk("NFS call setclientid auth=%s, '%s'\n",
6008 clp
->cl_rpcclient
->cl_auth
->au_ops
->au_name
,
6010 task
= rpc_run_task(&task_setup_data
);
6012 status
= PTR_ERR(task
);
6015 status
= task
->tk_status
;
6016 if (setclientid
.sc_cred
) {
6017 clp
->cl_acceptor
= rpcauth_stringify_acceptor(setclientid
.sc_cred
);
6018 put_rpccred(setclientid
.sc_cred
);
6022 trace_nfs4_setclientid(clp
, status
);
6023 dprintk("NFS reply setclientid: %d\n", status
);
6028 * nfs4_proc_setclientid_confirm - Confirm client ID
6029 * @clp: state data structure
6030 * @arg: result of a previous SETCLIENTID
6031 * @cred: credential to use for this call
6033 * Returns zero, a negative errno, or a negative NFS4ERR status code.
6035 int nfs4_proc_setclientid_confirm(struct nfs_client
*clp
,
6036 struct nfs4_setclientid_res
*arg
,
6037 const struct cred
*cred
)
6039 struct rpc_message msg
= {
6040 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETCLIENTID_CONFIRM
],
6046 dprintk("NFS call setclientid_confirm auth=%s, (client ID %llx)\n",
6047 clp
->cl_rpcclient
->cl_auth
->au_ops
->au_name
,
6049 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
6050 trace_nfs4_setclientid_confirm(clp
, status
);
6051 dprintk("NFS reply setclientid_confirm: %d\n", status
);
6055 struct nfs4_delegreturndata
{
6056 struct nfs4_delegreturnargs args
;
6057 struct nfs4_delegreturnres res
;
6059 nfs4_stateid stateid
;
6060 unsigned long timestamp
;
6062 struct nfs4_layoutreturn_args arg
;
6063 struct nfs4_layoutreturn_res res
;
6064 struct nfs4_xdr_opaque_data ld_private
;
6068 struct nfs_fattr fattr
;
6070 struct inode
*inode
;
6073 static void nfs4_delegreturn_done(struct rpc_task
*task
, void *calldata
)
6075 struct nfs4_delegreturndata
*data
= calldata
;
6076 struct nfs4_exception exception
= {
6077 .inode
= data
->inode
,
6078 .stateid
= &data
->stateid
,
6081 if (!nfs4_sequence_done(task
, &data
->res
.seq_res
))
6084 trace_nfs4_delegreturn_exit(&data
->args
, &data
->res
, task
->tk_status
);
6086 /* Handle Layoutreturn errors */
6087 if (data
->args
.lr_args
&& task
->tk_status
!= 0) {
6088 switch(data
->res
.lr_ret
) {
6090 data
->res
.lr_ret
= -NFS4ERR_NOMATCHING_LAYOUT
;
6093 data
->args
.lr_args
= NULL
;
6094 data
->res
.lr_res
= NULL
;
6096 case -NFS4ERR_OLD_STATEID
:
6097 if (nfs4_layoutreturn_refresh_stateid(&data
->args
.lr_args
->stateid
,
6098 &data
->args
.lr_args
->range
,
6102 case -NFS4ERR_ADMIN_REVOKED
:
6103 case -NFS4ERR_DELEG_REVOKED
:
6104 case -NFS4ERR_EXPIRED
:
6105 case -NFS4ERR_BAD_STATEID
:
6106 case -NFS4ERR_UNKNOWN_LAYOUTTYPE
:
6107 case -NFS4ERR_WRONG_CRED
:
6108 data
->args
.lr_args
= NULL
;
6109 data
->res
.lr_res
= NULL
;
6114 switch (task
->tk_status
) {
6116 renew_lease(data
->res
.server
, data
->timestamp
);
6118 case -NFS4ERR_ADMIN_REVOKED
:
6119 case -NFS4ERR_DELEG_REVOKED
:
6120 case -NFS4ERR_EXPIRED
:
6121 nfs4_free_revoked_stateid(data
->res
.server
,
6123 task
->tk_msg
.rpc_cred
);
6125 case -NFS4ERR_BAD_STATEID
:
6126 case -NFS4ERR_STALE_STATEID
:
6127 task
->tk_status
= 0;
6129 case -NFS4ERR_OLD_STATEID
:
6130 if (nfs4_refresh_delegation_stateid(&data
->stateid
, data
->inode
))
6132 task
->tk_status
= 0;
6134 case -NFS4ERR_ACCESS
:
6135 if (data
->args
.bitmask
) {
6136 data
->args
.bitmask
= NULL
;
6137 data
->res
.fattr
= NULL
;
6142 task
->tk_status
= nfs4_async_handle_exception(task
,
6143 data
->res
.server
, task
->tk_status
,
6145 if (exception
.retry
)
6148 data
->rpc_status
= task
->tk_status
;
6151 data
->res
.lr_ret
= 0;
6153 task
->tk_status
= 0;
6154 rpc_restart_call_prepare(task
);
6157 static void nfs4_delegreturn_release(void *calldata
)
6159 struct nfs4_delegreturndata
*data
= calldata
;
6160 struct inode
*inode
= data
->inode
;
6164 pnfs_roc_release(&data
->lr
.arg
, &data
->lr
.res
,
6166 nfs_post_op_update_inode_force_wcc(inode
, &data
->fattr
);
6167 nfs_iput_and_deactive(inode
);
6172 static void nfs4_delegreturn_prepare(struct rpc_task
*task
, void *data
)
6174 struct nfs4_delegreturndata
*d_data
;
6175 struct pnfs_layout_hdr
*lo
;
6177 d_data
= (struct nfs4_delegreturndata
*)data
;
6179 if (!d_data
->lr
.roc
&& nfs4_wait_on_layoutreturn(d_data
->inode
, task
))
6182 lo
= d_data
->args
.lr_args
? d_data
->args
.lr_args
->layout
: NULL
;
6183 if (lo
&& !pnfs_layout_is_valid(lo
)) {
6184 d_data
->args
.lr_args
= NULL
;
6185 d_data
->res
.lr_res
= NULL
;
6188 nfs4_setup_sequence(d_data
->res
.server
->nfs_client
,
6189 &d_data
->args
.seq_args
,
6190 &d_data
->res
.seq_res
,
6194 static const struct rpc_call_ops nfs4_delegreturn_ops
= {
6195 .rpc_call_prepare
= nfs4_delegreturn_prepare
,
6196 .rpc_call_done
= nfs4_delegreturn_done
,
6197 .rpc_release
= nfs4_delegreturn_release
,
6200 static int _nfs4_proc_delegreturn(struct inode
*inode
, const struct cred
*cred
, const nfs4_stateid
*stateid
, int issync
)
6202 struct nfs4_delegreturndata
*data
;
6203 struct nfs_server
*server
= NFS_SERVER(inode
);
6204 struct rpc_task
*task
;
6205 struct rpc_message msg
= {
6206 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_DELEGRETURN
],
6209 struct rpc_task_setup task_setup_data
= {
6210 .rpc_client
= server
->client
,
6211 .rpc_message
= &msg
,
6212 .callback_ops
= &nfs4_delegreturn_ops
,
6213 .flags
= RPC_TASK_ASYNC
,
6217 data
= kzalloc(sizeof(*data
), GFP_NOFS
);
6220 nfs4_init_sequence(&data
->args
.seq_args
, &data
->res
.seq_res
, 1, 0);
6222 nfs4_state_protect(server
->nfs_client
,
6223 NFS_SP4_MACH_CRED_CLEANUP
,
6224 &task_setup_data
.rpc_client
, &msg
);
6226 data
->args
.fhandle
= &data
->fh
;
6227 data
->args
.stateid
= &data
->stateid
;
6228 data
->args
.bitmask
= server
->cache_consistency_bitmask
;
6229 nfs_copy_fh(&data
->fh
, NFS_FH(inode
));
6230 nfs4_stateid_copy(&data
->stateid
, stateid
);
6231 data
->res
.fattr
= &data
->fattr
;
6232 data
->res
.server
= server
;
6233 data
->res
.lr_ret
= -NFS4ERR_NOMATCHING_LAYOUT
;
6234 data
->lr
.arg
.ld_private
= &data
->lr
.ld_private
;
6235 nfs_fattr_init(data
->res
.fattr
);
6236 data
->timestamp
= jiffies
;
6237 data
->rpc_status
= 0;
6238 data
->lr
.roc
= pnfs_roc(inode
, &data
->lr
.arg
, &data
->lr
.res
, cred
);
6239 data
->inode
= nfs_igrab_and_active(inode
);
6242 data
->args
.lr_args
= &data
->lr
.arg
;
6243 data
->res
.lr_res
= &data
->lr
.res
;
6245 } else if (data
->lr
.roc
) {
6246 pnfs_roc_release(&data
->lr
.arg
, &data
->lr
.res
, 0);
6247 data
->lr
.roc
= false;
6250 task_setup_data
.callback_data
= data
;
6251 msg
.rpc_argp
= &data
->args
;
6252 msg
.rpc_resp
= &data
->res
;
6253 task
= rpc_run_task(&task_setup_data
);
6255 return PTR_ERR(task
);
6258 status
= rpc_wait_for_completion_task(task
);
6261 status
= data
->rpc_status
;
6267 int nfs4_proc_delegreturn(struct inode
*inode
, const struct cred
*cred
, const nfs4_stateid
*stateid
, int issync
)
6269 struct nfs_server
*server
= NFS_SERVER(inode
);
6270 struct nfs4_exception exception
= { };
6273 err
= _nfs4_proc_delegreturn(inode
, cred
, stateid
, issync
);
6274 trace_nfs4_delegreturn(inode
, stateid
, err
);
6276 case -NFS4ERR_STALE_STATEID
:
6277 case -NFS4ERR_EXPIRED
:
6281 err
= nfs4_handle_exception(server
, err
, &exception
);
6282 } while (exception
.retry
);
6286 static int _nfs4_proc_getlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
6288 struct inode
*inode
= state
->inode
;
6289 struct nfs_server
*server
= NFS_SERVER(inode
);
6290 struct nfs_client
*clp
= server
->nfs_client
;
6291 struct nfs_lockt_args arg
= {
6292 .fh
= NFS_FH(inode
),
6295 struct nfs_lockt_res res
= {
6298 struct rpc_message msg
= {
6299 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOCKT
],
6302 .rpc_cred
= state
->owner
->so_cred
,
6304 struct nfs4_lock_state
*lsp
;
6307 arg
.lock_owner
.clientid
= clp
->cl_clientid
;
6308 status
= nfs4_set_lock_state(state
, request
);
6311 lsp
= request
->fl_u
.nfs4_fl
.owner
;
6312 arg
.lock_owner
.id
= lsp
->ls_seqid
.owner_id
;
6313 arg
.lock_owner
.s_dev
= server
->s_dev
;
6314 status
= nfs4_call_sync(server
->client
, server
, &msg
, &arg
.seq_args
, &res
.seq_res
, 1);
6317 request
->fl_type
= F_UNLCK
;
6319 case -NFS4ERR_DENIED
:
6322 request
->fl_ops
->fl_release_private(request
);
6323 request
->fl_ops
= NULL
;
6328 static int nfs4_proc_getlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
6330 struct nfs4_exception exception
= {
6331 .interruptible
= true,
6336 err
= _nfs4_proc_getlk(state
, cmd
, request
);
6337 trace_nfs4_get_lock(request
, state
, cmd
, err
);
6338 err
= nfs4_handle_exception(NFS_SERVER(state
->inode
), err
,
6340 } while (exception
.retry
);
6344 struct nfs4_unlockdata
{
6345 struct nfs_locku_args arg
;
6346 struct nfs_locku_res res
;
6347 struct nfs4_lock_state
*lsp
;
6348 struct nfs_open_context
*ctx
;
6349 struct nfs_lock_context
*l_ctx
;
6350 struct file_lock fl
;
6351 struct nfs_server
*server
;
6352 unsigned long timestamp
;
6355 static struct nfs4_unlockdata
*nfs4_alloc_unlockdata(struct file_lock
*fl
,
6356 struct nfs_open_context
*ctx
,
6357 struct nfs4_lock_state
*lsp
,
6358 struct nfs_seqid
*seqid
)
6360 struct nfs4_unlockdata
*p
;
6361 struct inode
*inode
= lsp
->ls_state
->inode
;
6363 p
= kzalloc(sizeof(*p
), GFP_NOFS
);
6366 p
->arg
.fh
= NFS_FH(inode
);
6368 p
->arg
.seqid
= seqid
;
6369 p
->res
.seqid
= seqid
;
6371 /* Ensure we don't close file until we're done freeing locks! */
6372 p
->ctx
= get_nfs_open_context(ctx
);
6373 p
->l_ctx
= nfs_get_lock_context(ctx
);
6374 locks_init_lock(&p
->fl
);
6375 locks_copy_lock(&p
->fl
, fl
);
6376 p
->server
= NFS_SERVER(inode
);
6380 static void nfs4_locku_release_calldata(void *data
)
6382 struct nfs4_unlockdata
*calldata
= data
;
6383 nfs_free_seqid(calldata
->arg
.seqid
);
6384 nfs4_put_lock_state(calldata
->lsp
);
6385 nfs_put_lock_context(calldata
->l_ctx
);
6386 put_nfs_open_context(calldata
->ctx
);
6390 static void nfs4_locku_done(struct rpc_task
*task
, void *data
)
6392 struct nfs4_unlockdata
*calldata
= data
;
6393 struct nfs4_exception exception
= {
6394 .inode
= calldata
->lsp
->ls_state
->inode
,
6395 .stateid
= &calldata
->arg
.stateid
,
6398 if (!nfs4_sequence_done(task
, &calldata
->res
.seq_res
))
6400 switch (task
->tk_status
) {
6402 renew_lease(calldata
->server
, calldata
->timestamp
);
6403 locks_lock_inode_wait(calldata
->lsp
->ls_state
->inode
, &calldata
->fl
);
6404 if (nfs4_update_lock_stateid(calldata
->lsp
,
6405 &calldata
->res
.stateid
))
6408 case -NFS4ERR_ADMIN_REVOKED
:
6409 case -NFS4ERR_EXPIRED
:
6410 nfs4_free_revoked_stateid(calldata
->server
,
6411 &calldata
->arg
.stateid
,
6412 task
->tk_msg
.rpc_cred
);
6414 case -NFS4ERR_BAD_STATEID
:
6415 case -NFS4ERR_OLD_STATEID
:
6416 case -NFS4ERR_STALE_STATEID
:
6417 if (!nfs4_stateid_match(&calldata
->arg
.stateid
,
6418 &calldata
->lsp
->ls_stateid
))
6419 rpc_restart_call_prepare(task
);
6422 task
->tk_status
= nfs4_async_handle_exception(task
,
6423 calldata
->server
, task
->tk_status
,
6425 if (exception
.retry
)
6426 rpc_restart_call_prepare(task
);
6428 nfs_release_seqid(calldata
->arg
.seqid
);
6431 static void nfs4_locku_prepare(struct rpc_task
*task
, void *data
)
6433 struct nfs4_unlockdata
*calldata
= data
;
6435 if (test_bit(NFS_CONTEXT_UNLOCK
, &calldata
->l_ctx
->open_context
->flags
) &&
6436 nfs_async_iocounter_wait(task
, calldata
->l_ctx
))
6439 if (nfs_wait_on_sequence(calldata
->arg
.seqid
, task
) != 0)
6441 nfs4_stateid_copy(&calldata
->arg
.stateid
, &calldata
->lsp
->ls_stateid
);
6442 if (test_bit(NFS_LOCK_INITIALIZED
, &calldata
->lsp
->ls_flags
) == 0) {
6443 /* Note: exit _without_ running nfs4_locku_done */
6446 calldata
->timestamp
= jiffies
;
6447 if (nfs4_setup_sequence(calldata
->server
->nfs_client
,
6448 &calldata
->arg
.seq_args
,
6449 &calldata
->res
.seq_res
,
6451 nfs_release_seqid(calldata
->arg
.seqid
);
6454 task
->tk_action
= NULL
;
6456 nfs4_sequence_done(task
, &calldata
->res
.seq_res
);
6459 static const struct rpc_call_ops nfs4_locku_ops
= {
6460 .rpc_call_prepare
= nfs4_locku_prepare
,
6461 .rpc_call_done
= nfs4_locku_done
,
6462 .rpc_release
= nfs4_locku_release_calldata
,
6465 static struct rpc_task
*nfs4_do_unlck(struct file_lock
*fl
,
6466 struct nfs_open_context
*ctx
,
6467 struct nfs4_lock_state
*lsp
,
6468 struct nfs_seqid
*seqid
)
6470 struct nfs4_unlockdata
*data
;
6471 struct rpc_message msg
= {
6472 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOCKU
],
6473 .rpc_cred
= ctx
->cred
,
6475 struct rpc_task_setup task_setup_data
= {
6476 .rpc_client
= NFS_CLIENT(lsp
->ls_state
->inode
),
6477 .rpc_message
= &msg
,
6478 .callback_ops
= &nfs4_locku_ops
,
6479 .workqueue
= nfsiod_workqueue
,
6480 .flags
= RPC_TASK_ASYNC
,
6483 nfs4_state_protect(NFS_SERVER(lsp
->ls_state
->inode
)->nfs_client
,
6484 NFS_SP4_MACH_CRED_CLEANUP
, &task_setup_data
.rpc_client
, &msg
);
6486 /* Ensure this is an unlock - when canceling a lock, the
6487 * canceled lock is passed in, and it won't be an unlock.
6489 fl
->fl_type
= F_UNLCK
;
6490 if (fl
->fl_flags
& FL_CLOSE
)
6491 set_bit(NFS_CONTEXT_UNLOCK
, &ctx
->flags
);
6493 data
= nfs4_alloc_unlockdata(fl
, ctx
, lsp
, seqid
);
6495 nfs_free_seqid(seqid
);
6496 return ERR_PTR(-ENOMEM
);
6499 nfs4_init_sequence(&data
->arg
.seq_args
, &data
->res
.seq_res
, 1, 0);
6500 msg
.rpc_argp
= &data
->arg
;
6501 msg
.rpc_resp
= &data
->res
;
6502 task_setup_data
.callback_data
= data
;
6503 return rpc_run_task(&task_setup_data
);
6506 static int nfs4_proc_unlck(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
6508 struct inode
*inode
= state
->inode
;
6509 struct nfs4_state_owner
*sp
= state
->owner
;
6510 struct nfs_inode
*nfsi
= NFS_I(inode
);
6511 struct nfs_seqid
*seqid
;
6512 struct nfs4_lock_state
*lsp
;
6513 struct rpc_task
*task
;
6514 struct nfs_seqid
*(*alloc_seqid
)(struct nfs_seqid_counter
*, gfp_t
);
6516 unsigned char fl_flags
= request
->fl_flags
;
6518 status
= nfs4_set_lock_state(state
, request
);
6519 /* Unlock _before_ we do the RPC call */
6520 request
->fl_flags
|= FL_EXISTS
;
6521 /* Exclude nfs_delegation_claim_locks() */
6522 mutex_lock(&sp
->so_delegreturn_mutex
);
6523 /* Exclude nfs4_reclaim_open_stateid() - note nesting! */
6524 down_read(&nfsi
->rwsem
);
6525 if (locks_lock_inode_wait(inode
, request
) == -ENOENT
) {
6526 up_read(&nfsi
->rwsem
);
6527 mutex_unlock(&sp
->so_delegreturn_mutex
);
6530 up_read(&nfsi
->rwsem
);
6531 mutex_unlock(&sp
->so_delegreturn_mutex
);
6534 /* Is this a delegated lock? */
6535 lsp
= request
->fl_u
.nfs4_fl
.owner
;
6536 if (test_bit(NFS_LOCK_INITIALIZED
, &lsp
->ls_flags
) == 0)
6538 alloc_seqid
= NFS_SERVER(inode
)->nfs_client
->cl_mvops
->alloc_seqid
;
6539 seqid
= alloc_seqid(&lsp
->ls_seqid
, GFP_KERNEL
);
6543 task
= nfs4_do_unlck(request
, nfs_file_open_context(request
->fl_file
), lsp
, seqid
);
6544 status
= PTR_ERR(task
);
6547 status
= rpc_wait_for_completion_task(task
);
6550 request
->fl_flags
= fl_flags
;
6551 trace_nfs4_unlock(request
, state
, F_SETLK
, status
);
6555 struct nfs4_lockdata
{
6556 struct nfs_lock_args arg
;
6557 struct nfs_lock_res res
;
6558 struct nfs4_lock_state
*lsp
;
6559 struct nfs_open_context
*ctx
;
6560 struct file_lock fl
;
6561 unsigned long timestamp
;
6564 struct nfs_server
*server
;
6567 static struct nfs4_lockdata
*nfs4_alloc_lockdata(struct file_lock
*fl
,
6568 struct nfs_open_context
*ctx
, struct nfs4_lock_state
*lsp
,
6571 struct nfs4_lockdata
*p
;
6572 struct inode
*inode
= lsp
->ls_state
->inode
;
6573 struct nfs_server
*server
= NFS_SERVER(inode
);
6574 struct nfs_seqid
*(*alloc_seqid
)(struct nfs_seqid_counter
*, gfp_t
);
6576 p
= kzalloc(sizeof(*p
), gfp_mask
);
6580 p
->arg
.fh
= NFS_FH(inode
);
6582 p
->arg
.open_seqid
= nfs_alloc_seqid(&lsp
->ls_state
->owner
->so_seqid
, gfp_mask
);
6583 if (IS_ERR(p
->arg
.open_seqid
))
6585 alloc_seqid
= server
->nfs_client
->cl_mvops
->alloc_seqid
;
6586 p
->arg
.lock_seqid
= alloc_seqid(&lsp
->ls_seqid
, gfp_mask
);
6587 if (IS_ERR(p
->arg
.lock_seqid
))
6588 goto out_free_seqid
;
6589 p
->arg
.lock_owner
.clientid
= server
->nfs_client
->cl_clientid
;
6590 p
->arg
.lock_owner
.id
= lsp
->ls_seqid
.owner_id
;
6591 p
->arg
.lock_owner
.s_dev
= server
->s_dev
;
6592 p
->res
.lock_seqid
= p
->arg
.lock_seqid
;
6595 p
->ctx
= get_nfs_open_context(ctx
);
6596 locks_init_lock(&p
->fl
);
6597 locks_copy_lock(&p
->fl
, fl
);
6600 nfs_free_seqid(p
->arg
.open_seqid
);
6606 static void nfs4_lock_prepare(struct rpc_task
*task
, void *calldata
)
6608 struct nfs4_lockdata
*data
= calldata
;
6609 struct nfs4_state
*state
= data
->lsp
->ls_state
;
6611 dprintk("%s: begin!\n", __func__
);
6612 if (nfs_wait_on_sequence(data
->arg
.lock_seqid
, task
) != 0)
6614 /* Do we need to do an open_to_lock_owner? */
6615 if (!test_bit(NFS_LOCK_INITIALIZED
, &data
->lsp
->ls_flags
)) {
6616 if (nfs_wait_on_sequence(data
->arg
.open_seqid
, task
) != 0) {
6617 goto out_release_lock_seqid
;
6619 nfs4_stateid_copy(&data
->arg
.open_stateid
,
6620 &state
->open_stateid
);
6621 data
->arg
.new_lock_owner
= 1;
6622 data
->res
.open_seqid
= data
->arg
.open_seqid
;
6624 data
->arg
.new_lock_owner
= 0;
6625 nfs4_stateid_copy(&data
->arg
.lock_stateid
,
6626 &data
->lsp
->ls_stateid
);
6628 if (!nfs4_valid_open_stateid(state
)) {
6629 data
->rpc_status
= -EBADF
;
6630 task
->tk_action
= NULL
;
6631 goto out_release_open_seqid
;
6633 data
->timestamp
= jiffies
;
6634 if (nfs4_setup_sequence(data
->server
->nfs_client
,
6635 &data
->arg
.seq_args
,
6639 out_release_open_seqid
:
6640 nfs_release_seqid(data
->arg
.open_seqid
);
6641 out_release_lock_seqid
:
6642 nfs_release_seqid(data
->arg
.lock_seqid
);
6644 nfs4_sequence_done(task
, &data
->res
.seq_res
);
6645 dprintk("%s: done!, ret = %d\n", __func__
, data
->rpc_status
);
6648 static void nfs4_lock_done(struct rpc_task
*task
, void *calldata
)
6650 struct nfs4_lockdata
*data
= calldata
;
6651 struct nfs4_lock_state
*lsp
= data
->lsp
;
6653 dprintk("%s: begin!\n", __func__
);
6655 if (!nfs4_sequence_done(task
, &data
->res
.seq_res
))
6658 data
->rpc_status
= task
->tk_status
;
6659 switch (task
->tk_status
) {
6661 renew_lease(NFS_SERVER(d_inode(data
->ctx
->dentry
)),
6663 if (data
->arg
.new_lock
&& !data
->cancelled
) {
6664 data
->fl
.fl_flags
&= ~(FL_SLEEP
| FL_ACCESS
);
6665 if (locks_lock_inode_wait(lsp
->ls_state
->inode
, &data
->fl
) < 0)
6668 if (data
->arg
.new_lock_owner
!= 0) {
6669 nfs_confirm_seqid(&lsp
->ls_seqid
, 0);
6670 nfs4_stateid_copy(&lsp
->ls_stateid
, &data
->res
.stateid
);
6671 set_bit(NFS_LOCK_INITIALIZED
, &lsp
->ls_flags
);
6672 } else if (!nfs4_update_lock_stateid(lsp
, &data
->res
.stateid
))
6675 case -NFS4ERR_BAD_STATEID
:
6676 case -NFS4ERR_OLD_STATEID
:
6677 case -NFS4ERR_STALE_STATEID
:
6678 case -NFS4ERR_EXPIRED
:
6679 if (data
->arg
.new_lock_owner
!= 0) {
6680 if (!nfs4_stateid_match(&data
->arg
.open_stateid
,
6681 &lsp
->ls_state
->open_stateid
))
6683 } else if (!nfs4_stateid_match(&data
->arg
.lock_stateid
,
6688 dprintk("%s: done, ret = %d!\n", __func__
, data
->rpc_status
);
6691 if (!data
->cancelled
)
6692 rpc_restart_call_prepare(task
);
6696 static void nfs4_lock_release(void *calldata
)
6698 struct nfs4_lockdata
*data
= calldata
;
6700 dprintk("%s: begin!\n", __func__
);
6701 nfs_free_seqid(data
->arg
.open_seqid
);
6702 if (data
->cancelled
&& data
->rpc_status
== 0) {
6703 struct rpc_task
*task
;
6704 task
= nfs4_do_unlck(&data
->fl
, data
->ctx
, data
->lsp
,
6705 data
->arg
.lock_seqid
);
6707 rpc_put_task_async(task
);
6708 dprintk("%s: cancelling lock!\n", __func__
);
6710 nfs_free_seqid(data
->arg
.lock_seqid
);
6711 nfs4_put_lock_state(data
->lsp
);
6712 put_nfs_open_context(data
->ctx
);
6714 dprintk("%s: done!\n", __func__
);
6717 static const struct rpc_call_ops nfs4_lock_ops
= {
6718 .rpc_call_prepare
= nfs4_lock_prepare
,
6719 .rpc_call_done
= nfs4_lock_done
,
6720 .rpc_release
= nfs4_lock_release
,
6723 static void nfs4_handle_setlk_error(struct nfs_server
*server
, struct nfs4_lock_state
*lsp
, int new_lock_owner
, int error
)
6726 case -NFS4ERR_ADMIN_REVOKED
:
6727 case -NFS4ERR_EXPIRED
:
6728 case -NFS4ERR_BAD_STATEID
:
6729 lsp
->ls_seqid
.flags
&= ~NFS_SEQID_CONFIRMED
;
6730 if (new_lock_owner
!= 0 ||
6731 test_bit(NFS_LOCK_INITIALIZED
, &lsp
->ls_flags
) != 0)
6732 nfs4_schedule_stateid_recovery(server
, lsp
->ls_state
);
6734 case -NFS4ERR_STALE_STATEID
:
6735 lsp
->ls_seqid
.flags
&= ~NFS_SEQID_CONFIRMED
;
6736 nfs4_schedule_lease_recovery(server
->nfs_client
);
6740 static int _nfs4_do_setlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*fl
, int recovery_type
)
6742 struct nfs4_lockdata
*data
;
6743 struct rpc_task
*task
;
6744 struct rpc_message msg
= {
6745 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOCK
],
6746 .rpc_cred
= state
->owner
->so_cred
,
6748 struct rpc_task_setup task_setup_data
= {
6749 .rpc_client
= NFS_CLIENT(state
->inode
),
6750 .rpc_message
= &msg
,
6751 .callback_ops
= &nfs4_lock_ops
,
6752 .workqueue
= nfsiod_workqueue
,
6753 .flags
= RPC_TASK_ASYNC
,
6757 dprintk("%s: begin!\n", __func__
);
6758 data
= nfs4_alloc_lockdata(fl
, nfs_file_open_context(fl
->fl_file
),
6759 fl
->fl_u
.nfs4_fl
.owner
,
6760 recovery_type
== NFS_LOCK_NEW
? GFP_KERNEL
: GFP_NOFS
);
6764 data
->arg
.block
= 1;
6765 nfs4_init_sequence(&data
->arg
.seq_args
, &data
->res
.seq_res
, 1,
6766 recovery_type
> NFS_LOCK_NEW
);
6767 msg
.rpc_argp
= &data
->arg
;
6768 msg
.rpc_resp
= &data
->res
;
6769 task_setup_data
.callback_data
= data
;
6770 if (recovery_type
> NFS_LOCK_NEW
) {
6771 if (recovery_type
== NFS_LOCK_RECLAIM
)
6772 data
->arg
.reclaim
= NFS_LOCK_RECLAIM
;
6774 data
->arg
.new_lock
= 1;
6775 task
= rpc_run_task(&task_setup_data
);
6777 return PTR_ERR(task
);
6778 ret
= rpc_wait_for_completion_task(task
);
6780 ret
= data
->rpc_status
;
6782 nfs4_handle_setlk_error(data
->server
, data
->lsp
,
6783 data
->arg
.new_lock_owner
, ret
);
6785 data
->cancelled
= true;
6787 dprintk("%s: done, ret = %d!\n", __func__
, ret
);
6788 trace_nfs4_set_lock(fl
, state
, &data
->res
.stateid
, cmd
, ret
);
6792 static int nfs4_lock_reclaim(struct nfs4_state
*state
, struct file_lock
*request
)
6794 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
6795 struct nfs4_exception exception
= {
6796 .inode
= state
->inode
,
6801 /* Cache the lock if possible... */
6802 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) != 0)
6804 err
= _nfs4_do_setlk(state
, F_SETLK
, request
, NFS_LOCK_RECLAIM
);
6805 if (err
!= -NFS4ERR_DELAY
)
6807 nfs4_handle_exception(server
, err
, &exception
);
6808 } while (exception
.retry
);
6812 static int nfs4_lock_expired(struct nfs4_state
*state
, struct file_lock
*request
)
6814 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
6815 struct nfs4_exception exception
= {
6816 .inode
= state
->inode
,
6820 err
= nfs4_set_lock_state(state
, request
);
6823 if (!recover_lost_locks
) {
6824 set_bit(NFS_LOCK_LOST
, &request
->fl_u
.nfs4_fl
.owner
->ls_flags
);
6828 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) != 0)
6830 err
= _nfs4_do_setlk(state
, F_SETLK
, request
, NFS_LOCK_EXPIRED
);
6834 case -NFS4ERR_GRACE
:
6835 case -NFS4ERR_DELAY
:
6836 nfs4_handle_exception(server
, err
, &exception
);
6839 } while (exception
.retry
);
6844 #if defined(CONFIG_NFS_V4_1)
6845 static int nfs41_lock_expired(struct nfs4_state
*state
, struct file_lock
*request
)
6847 struct nfs4_lock_state
*lsp
;
6850 status
= nfs4_set_lock_state(state
, request
);
6853 lsp
= request
->fl_u
.nfs4_fl
.owner
;
6854 if (test_bit(NFS_LOCK_INITIALIZED
, &lsp
->ls_flags
) ||
6855 test_bit(NFS_LOCK_LOST
, &lsp
->ls_flags
))
6857 return nfs4_lock_expired(state
, request
);
6861 static int _nfs4_proc_setlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
6863 struct nfs_inode
*nfsi
= NFS_I(state
->inode
);
6864 struct nfs4_state_owner
*sp
= state
->owner
;
6865 unsigned char fl_flags
= request
->fl_flags
;
6868 request
->fl_flags
|= FL_ACCESS
;
6869 status
= locks_lock_inode_wait(state
->inode
, request
);
6872 mutex_lock(&sp
->so_delegreturn_mutex
);
6873 down_read(&nfsi
->rwsem
);
6874 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
)) {
6875 /* Yes: cache locks! */
6876 /* ...but avoid races with delegation recall... */
6877 request
->fl_flags
= fl_flags
& ~FL_SLEEP
;
6878 status
= locks_lock_inode_wait(state
->inode
, request
);
6879 up_read(&nfsi
->rwsem
);
6880 mutex_unlock(&sp
->so_delegreturn_mutex
);
6883 up_read(&nfsi
->rwsem
);
6884 mutex_unlock(&sp
->so_delegreturn_mutex
);
6885 status
= _nfs4_do_setlk(state
, cmd
, request
, NFS_LOCK_NEW
);
6887 request
->fl_flags
= fl_flags
;
6891 static int nfs4_proc_setlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
6893 struct nfs4_exception exception
= {
6895 .inode
= state
->inode
,
6896 .interruptible
= true,
6901 err
= _nfs4_proc_setlk(state
, cmd
, request
);
6902 if (err
== -NFS4ERR_DENIED
)
6904 err
= nfs4_handle_exception(NFS_SERVER(state
->inode
),
6906 } while (exception
.retry
);
6910 #define NFS4_LOCK_MINTIMEOUT (1 * HZ)
6911 #define NFS4_LOCK_MAXTIMEOUT (30 * HZ)
6914 nfs4_retry_setlk_simple(struct nfs4_state
*state
, int cmd
,
6915 struct file_lock
*request
)
6917 int status
= -ERESTARTSYS
;
6918 unsigned long timeout
= NFS4_LOCK_MINTIMEOUT
;
6920 while(!signalled()) {
6921 status
= nfs4_proc_setlk(state
, cmd
, request
);
6922 if ((status
!= -EAGAIN
) || IS_SETLK(cmd
))
6924 freezable_schedule_timeout_interruptible(timeout
);
6926 timeout
= min_t(unsigned long, NFS4_LOCK_MAXTIMEOUT
, timeout
);
6927 status
= -ERESTARTSYS
;
6932 #ifdef CONFIG_NFS_V4_1
6933 struct nfs4_lock_waiter
{
6934 struct task_struct
*task
;
6935 struct inode
*inode
;
6936 struct nfs_lowner
*owner
;
6940 nfs4_wake_lock_waiter(wait_queue_entry_t
*wait
, unsigned int mode
, int flags
, void *key
)
6943 struct nfs4_lock_waiter
*waiter
= wait
->private;
6945 /* NULL key means to wake up everyone */
6947 struct cb_notify_lock_args
*cbnl
= key
;
6948 struct nfs_lowner
*lowner
= &cbnl
->cbnl_owner
,
6949 *wowner
= waiter
->owner
;
6951 /* Only wake if the callback was for the same owner. */
6952 if (lowner
->id
!= wowner
->id
|| lowner
->s_dev
!= wowner
->s_dev
)
6955 /* Make sure it's for the right inode */
6956 if (nfs_compare_fh(NFS_FH(waiter
->inode
), &cbnl
->cbnl_fh
))
6960 /* override "private" so we can use default_wake_function */
6961 wait
->private = waiter
->task
;
6962 ret
= woken_wake_function(wait
, mode
, flags
, key
);
6964 list_del_init(&wait
->entry
);
6965 wait
->private = waiter
;
6970 nfs4_retry_setlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
6972 int status
= -ERESTARTSYS
;
6973 struct nfs4_lock_state
*lsp
= request
->fl_u
.nfs4_fl
.owner
;
6974 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
6975 struct nfs_client
*clp
= server
->nfs_client
;
6976 wait_queue_head_t
*q
= &clp
->cl_lock_waitq
;
6977 struct nfs_lowner owner
= { .clientid
= clp
->cl_clientid
,
6978 .id
= lsp
->ls_seqid
.owner_id
,
6979 .s_dev
= server
->s_dev
};
6980 struct nfs4_lock_waiter waiter
= { .task
= current
,
6981 .inode
= state
->inode
,
6983 wait_queue_entry_t wait
;
6985 /* Don't bother with waitqueue if we don't expect a callback */
6986 if (!test_bit(NFS_STATE_MAY_NOTIFY_LOCK
, &state
->flags
))
6987 return nfs4_retry_setlk_simple(state
, cmd
, request
);
6990 wait
.private = &waiter
;
6991 wait
.func
= nfs4_wake_lock_waiter
;
6993 while(!signalled()) {
6994 add_wait_queue(q
, &wait
);
6995 status
= nfs4_proc_setlk(state
, cmd
, request
);
6996 if ((status
!= -EAGAIN
) || IS_SETLK(cmd
)) {
6997 finish_wait(q
, &wait
);
7001 status
= -ERESTARTSYS
;
7002 freezer_do_not_count();
7003 wait_woken(&wait
, TASK_INTERRUPTIBLE
, NFS4_LOCK_MAXTIMEOUT
);
7005 finish_wait(q
, &wait
);
7010 #else /* !CONFIG_NFS_V4_1 */
7012 nfs4_retry_setlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
7014 return nfs4_retry_setlk_simple(state
, cmd
, request
);
7019 nfs4_proc_lock(struct file
*filp
, int cmd
, struct file_lock
*request
)
7021 struct nfs_open_context
*ctx
;
7022 struct nfs4_state
*state
;
7025 /* verify open state */
7026 ctx
= nfs_file_open_context(filp
);
7029 if (IS_GETLK(cmd
)) {
7031 return nfs4_proc_getlk(state
, F_GETLK
, request
);
7035 if (!(IS_SETLK(cmd
) || IS_SETLKW(cmd
)))
7038 if (request
->fl_type
== F_UNLCK
) {
7040 return nfs4_proc_unlck(state
, cmd
, request
);
7047 if ((request
->fl_flags
& FL_POSIX
) &&
7048 !test_bit(NFS_STATE_POSIX_LOCKS
, &state
->flags
))
7052 * Don't rely on the VFS having checked the file open mode,
7053 * since it won't do this for flock() locks.
7055 switch (request
->fl_type
) {
7057 if (!(filp
->f_mode
& FMODE_READ
))
7061 if (!(filp
->f_mode
& FMODE_WRITE
))
7065 status
= nfs4_set_lock_state(state
, request
);
7069 return nfs4_retry_setlk(state
, cmd
, request
);
7072 int nfs4_lock_delegation_recall(struct file_lock
*fl
, struct nfs4_state
*state
, const nfs4_stateid
*stateid
)
7074 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
7077 err
= nfs4_set_lock_state(state
, fl
);
7080 err
= _nfs4_do_setlk(state
, F_SETLK
, fl
, NFS_LOCK_NEW
);
7081 return nfs4_handle_delegation_recall_error(server
, state
, stateid
, fl
, err
);
7084 struct nfs_release_lockowner_data
{
7085 struct nfs4_lock_state
*lsp
;
7086 struct nfs_server
*server
;
7087 struct nfs_release_lockowner_args args
;
7088 struct nfs_release_lockowner_res res
;
7089 unsigned long timestamp
;
7092 static void nfs4_release_lockowner_prepare(struct rpc_task
*task
, void *calldata
)
7094 struct nfs_release_lockowner_data
*data
= calldata
;
7095 struct nfs_server
*server
= data
->server
;
7096 nfs4_setup_sequence(server
->nfs_client
, &data
->args
.seq_args
,
7097 &data
->res
.seq_res
, task
);
7098 data
->args
.lock_owner
.clientid
= server
->nfs_client
->cl_clientid
;
7099 data
->timestamp
= jiffies
;
7102 static void nfs4_release_lockowner_done(struct rpc_task
*task
, void *calldata
)
7104 struct nfs_release_lockowner_data
*data
= calldata
;
7105 struct nfs_server
*server
= data
->server
;
7107 nfs40_sequence_done(task
, &data
->res
.seq_res
);
7109 switch (task
->tk_status
) {
7111 renew_lease(server
, data
->timestamp
);
7113 case -NFS4ERR_STALE_CLIENTID
:
7114 case -NFS4ERR_EXPIRED
:
7115 nfs4_schedule_lease_recovery(server
->nfs_client
);
7117 case -NFS4ERR_LEASE_MOVED
:
7118 case -NFS4ERR_DELAY
:
7119 if (nfs4_async_handle_error(task
, server
,
7120 NULL
, NULL
) == -EAGAIN
)
7121 rpc_restart_call_prepare(task
);
7125 static void nfs4_release_lockowner_release(void *calldata
)
7127 struct nfs_release_lockowner_data
*data
= calldata
;
7128 nfs4_free_lock_state(data
->server
, data
->lsp
);
7132 static const struct rpc_call_ops nfs4_release_lockowner_ops
= {
7133 .rpc_call_prepare
= nfs4_release_lockowner_prepare
,
7134 .rpc_call_done
= nfs4_release_lockowner_done
,
7135 .rpc_release
= nfs4_release_lockowner_release
,
7139 nfs4_release_lockowner(struct nfs_server
*server
, struct nfs4_lock_state
*lsp
)
7141 struct nfs_release_lockowner_data
*data
;
7142 struct rpc_message msg
= {
7143 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RELEASE_LOCKOWNER
],
7146 if (server
->nfs_client
->cl_mvops
->minor_version
!= 0)
7149 data
= kmalloc(sizeof(*data
), GFP_NOFS
);
7153 data
->server
= server
;
7154 data
->args
.lock_owner
.clientid
= server
->nfs_client
->cl_clientid
;
7155 data
->args
.lock_owner
.id
= lsp
->ls_seqid
.owner_id
;
7156 data
->args
.lock_owner
.s_dev
= server
->s_dev
;
7158 msg
.rpc_argp
= &data
->args
;
7159 msg
.rpc_resp
= &data
->res
;
7160 nfs4_init_sequence(&data
->args
.seq_args
, &data
->res
.seq_res
, 0, 0);
7161 rpc_call_async(server
->client
, &msg
, 0, &nfs4_release_lockowner_ops
, data
);
7164 #define XATTR_NAME_NFSV4_ACL "system.nfs4_acl"
7166 static int nfs4_xattr_set_nfs4_acl(const struct xattr_handler
*handler
,
7167 struct dentry
*unused
, struct inode
*inode
,
7168 const char *key
, const void *buf
,
7169 size_t buflen
, int flags
)
7171 return nfs4_proc_set_acl(inode
, buf
, buflen
);
7174 static int nfs4_xattr_get_nfs4_acl(const struct xattr_handler
*handler
,
7175 struct dentry
*unused
, struct inode
*inode
,
7176 const char *key
, void *buf
, size_t buflen
)
7178 return nfs4_proc_get_acl(inode
, buf
, buflen
);
7181 static bool nfs4_xattr_list_nfs4_acl(struct dentry
*dentry
)
7183 return nfs4_server_supports_acls(NFS_SERVER(d_inode(dentry
)));
7186 #ifdef CONFIG_NFS_V4_SECURITY_LABEL
7188 static int nfs4_xattr_set_nfs4_label(const struct xattr_handler
*handler
,
7189 struct dentry
*unused
, struct inode
*inode
,
7190 const char *key
, const void *buf
,
7191 size_t buflen
, int flags
)
7193 if (security_ismaclabel(key
))
7194 return nfs4_set_security_label(inode
, buf
, buflen
);
7199 static int nfs4_xattr_get_nfs4_label(const struct xattr_handler
*handler
,
7200 struct dentry
*unused
, struct inode
*inode
,
7201 const char *key
, void *buf
, size_t buflen
)
7203 if (security_ismaclabel(key
))
7204 return nfs4_get_security_label(inode
, buf
, buflen
);
7209 nfs4_listxattr_nfs4_label(struct inode
*inode
, char *list
, size_t list_len
)
7213 if (nfs_server_capable(inode
, NFS_CAP_SECURITY_LABEL
)) {
7214 len
= security_inode_listsecurity(inode
, list
, list_len
);
7215 if (list_len
&& len
> list_len
)
7221 static const struct xattr_handler nfs4_xattr_nfs4_label_handler
= {
7222 .prefix
= XATTR_SECURITY_PREFIX
,
7223 .get
= nfs4_xattr_get_nfs4_label
,
7224 .set
= nfs4_xattr_set_nfs4_label
,
7230 nfs4_listxattr_nfs4_label(struct inode
*inode
, char *list
, size_t list_len
)
7238 * nfs_fhget will use either the mounted_on_fileid or the fileid
7240 static void nfs_fixup_referral_attributes(struct nfs_fattr
*fattr
)
7242 if (!(((fattr
->valid
& NFS_ATTR_FATTR_MOUNTED_ON_FILEID
) ||
7243 (fattr
->valid
& NFS_ATTR_FATTR_FILEID
)) &&
7244 (fattr
->valid
& NFS_ATTR_FATTR_FSID
) &&
7245 (fattr
->valid
& NFS_ATTR_FATTR_V4_LOCATIONS
)))
7248 fattr
->valid
|= NFS_ATTR_FATTR_TYPE
| NFS_ATTR_FATTR_MODE
|
7249 NFS_ATTR_FATTR_NLINK
| NFS_ATTR_FATTR_V4_REFERRAL
;
7250 fattr
->mode
= S_IFDIR
| S_IRUGO
| S_IXUGO
;
7254 static int _nfs4_proc_fs_locations(struct rpc_clnt
*client
, struct inode
*dir
,
7255 const struct qstr
*name
,
7256 struct nfs4_fs_locations
*fs_locations
,
7259 struct nfs_server
*server
= NFS_SERVER(dir
);
7261 struct nfs4_fs_locations_arg args
= {
7262 .dir_fh
= NFS_FH(dir
),
7267 struct nfs4_fs_locations_res res
= {
7268 .fs_locations
= fs_locations
,
7270 struct rpc_message msg
= {
7271 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_FS_LOCATIONS
],
7277 dprintk("%s: start\n", __func__
);
7279 bitmask
[0] = nfs4_fattr_bitmap
[0] | FATTR4_WORD0_FS_LOCATIONS
;
7280 bitmask
[1] = nfs4_fattr_bitmap
[1];
7282 /* Ask for the fileid of the absent filesystem if mounted_on_fileid
7283 * is not supported */
7284 if (NFS_SERVER(dir
)->attr_bitmask
[1] & FATTR4_WORD1_MOUNTED_ON_FILEID
)
7285 bitmask
[0] &= ~FATTR4_WORD0_FILEID
;
7287 bitmask
[1] &= ~FATTR4_WORD1_MOUNTED_ON_FILEID
;
7289 nfs_fattr_init(&fs_locations
->fattr
);
7290 fs_locations
->server
= server
;
7291 fs_locations
->nlocations
= 0;
7292 status
= nfs4_call_sync(client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
7293 dprintk("%s: returned status = %d\n", __func__
, status
);
7297 int nfs4_proc_fs_locations(struct rpc_clnt
*client
, struct inode
*dir
,
7298 const struct qstr
*name
,
7299 struct nfs4_fs_locations
*fs_locations
,
7302 struct nfs4_exception exception
= {
7303 .interruptible
= true,
7307 err
= _nfs4_proc_fs_locations(client
, dir
, name
,
7308 fs_locations
, page
);
7309 trace_nfs4_get_fs_locations(dir
, name
, err
);
7310 err
= nfs4_handle_exception(NFS_SERVER(dir
), err
,
7312 } while (exception
.retry
);
7317 * This operation also signals the server that this client is
7318 * performing migration recovery. The server can stop returning
7319 * NFS4ERR_LEASE_MOVED to this client. A RENEW operation is
7320 * appended to this compound to identify the client ID which is
7321 * performing recovery.
7323 static int _nfs40_proc_get_locations(struct inode
*inode
,
7324 struct nfs4_fs_locations
*locations
,
7325 struct page
*page
, const struct cred
*cred
)
7327 struct nfs_server
*server
= NFS_SERVER(inode
);
7328 struct rpc_clnt
*clnt
= server
->client
;
7330 [0] = FATTR4_WORD0_FSID
| FATTR4_WORD0_FS_LOCATIONS
,
7332 struct nfs4_fs_locations_arg args
= {
7333 .clientid
= server
->nfs_client
->cl_clientid
,
7334 .fh
= NFS_FH(inode
),
7337 .migration
= 1, /* skip LOOKUP */
7338 .renew
= 1, /* append RENEW */
7340 struct nfs4_fs_locations_res res
= {
7341 .fs_locations
= locations
,
7345 struct rpc_message msg
= {
7346 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_FS_LOCATIONS
],
7351 unsigned long now
= jiffies
;
7354 nfs_fattr_init(&locations
->fattr
);
7355 locations
->server
= server
;
7356 locations
->nlocations
= 0;
7358 nfs4_init_sequence(&args
.seq_args
, &res
.seq_res
, 0, 1);
7359 status
= nfs4_call_sync_sequence(clnt
, server
, &msg
,
7360 &args
.seq_args
, &res
.seq_res
);
7364 renew_lease(server
, now
);
7368 #ifdef CONFIG_NFS_V4_1
7371 * This operation also signals the server that this client is
7372 * performing migration recovery. The server can stop asserting
7373 * SEQ4_STATUS_LEASE_MOVED for this client. The client ID
7374 * performing this operation is identified in the SEQUENCE
7375 * operation in this compound.
7377 * When the client supports GETATTR(fs_locations_info), it can
7378 * be plumbed in here.
7380 static int _nfs41_proc_get_locations(struct inode
*inode
,
7381 struct nfs4_fs_locations
*locations
,
7382 struct page
*page
, const struct cred
*cred
)
7384 struct nfs_server
*server
= NFS_SERVER(inode
);
7385 struct rpc_clnt
*clnt
= server
->client
;
7387 [0] = FATTR4_WORD0_FSID
| FATTR4_WORD0_FS_LOCATIONS
,
7389 struct nfs4_fs_locations_arg args
= {
7390 .fh
= NFS_FH(inode
),
7393 .migration
= 1, /* skip LOOKUP */
7395 struct nfs4_fs_locations_res res
= {
7396 .fs_locations
= locations
,
7399 struct rpc_message msg
= {
7400 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_FS_LOCATIONS
],
7407 nfs_fattr_init(&locations
->fattr
);
7408 locations
->server
= server
;
7409 locations
->nlocations
= 0;
7411 nfs4_init_sequence(&args
.seq_args
, &res
.seq_res
, 0, 1);
7412 status
= nfs4_call_sync_sequence(clnt
, server
, &msg
,
7413 &args
.seq_args
, &res
.seq_res
);
7414 if (status
== NFS4_OK
&&
7415 res
.seq_res
.sr_status_flags
& SEQ4_STATUS_LEASE_MOVED
)
7416 status
= -NFS4ERR_LEASE_MOVED
;
7420 #endif /* CONFIG_NFS_V4_1 */
7423 * nfs4_proc_get_locations - discover locations for a migrated FSID
7424 * @inode: inode on FSID that is migrating
7425 * @locations: result of query
7427 * @cred: credential to use for this operation
7429 * Returns NFS4_OK on success, a negative NFS4ERR status code if the
7430 * operation failed, or a negative errno if a local error occurred.
7432 * On success, "locations" is filled in, but if the server has
7433 * no locations information, NFS_ATTR_FATTR_V4_LOCATIONS is not
7436 * -NFS4ERR_LEASE_MOVED is returned if the server still has leases
7437 * from this client that require migration recovery.
7439 int nfs4_proc_get_locations(struct inode
*inode
,
7440 struct nfs4_fs_locations
*locations
,
7441 struct page
*page
, const struct cred
*cred
)
7443 struct nfs_server
*server
= NFS_SERVER(inode
);
7444 struct nfs_client
*clp
= server
->nfs_client
;
7445 const struct nfs4_mig_recovery_ops
*ops
=
7446 clp
->cl_mvops
->mig_recovery_ops
;
7447 struct nfs4_exception exception
= {
7448 .interruptible
= true,
7452 dprintk("%s: FSID %llx:%llx on \"%s\"\n", __func__
,
7453 (unsigned long long)server
->fsid
.major
,
7454 (unsigned long long)server
->fsid
.minor
,
7456 nfs_display_fhandle(NFS_FH(inode
), __func__
);
7459 status
= ops
->get_locations(inode
, locations
, page
, cred
);
7460 if (status
!= -NFS4ERR_DELAY
)
7462 nfs4_handle_exception(server
, status
, &exception
);
7463 } while (exception
.retry
);
7468 * This operation also signals the server that this client is
7469 * performing "lease moved" recovery. The server can stop
7470 * returning NFS4ERR_LEASE_MOVED to this client. A RENEW operation
7471 * is appended to this compound to identify the client ID which is
7472 * performing recovery.
7474 static int _nfs40_proc_fsid_present(struct inode
*inode
, const struct cred
*cred
)
7476 struct nfs_server
*server
= NFS_SERVER(inode
);
7477 struct nfs_client
*clp
= NFS_SERVER(inode
)->nfs_client
;
7478 struct rpc_clnt
*clnt
= server
->client
;
7479 struct nfs4_fsid_present_arg args
= {
7480 .fh
= NFS_FH(inode
),
7481 .clientid
= clp
->cl_clientid
,
7482 .renew
= 1, /* append RENEW */
7484 struct nfs4_fsid_present_res res
= {
7487 struct rpc_message msg
= {
7488 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_FSID_PRESENT
],
7493 unsigned long now
= jiffies
;
7496 res
.fh
= nfs_alloc_fhandle();
7500 nfs4_init_sequence(&args
.seq_args
, &res
.seq_res
, 0, 1);
7501 status
= nfs4_call_sync_sequence(clnt
, server
, &msg
,
7502 &args
.seq_args
, &res
.seq_res
);
7503 nfs_free_fhandle(res
.fh
);
7507 do_renew_lease(clp
, now
);
7511 #ifdef CONFIG_NFS_V4_1
7514 * This operation also signals the server that this client is
7515 * performing "lease moved" recovery. The server can stop asserting
7516 * SEQ4_STATUS_LEASE_MOVED for this client. The client ID performing
7517 * this operation is identified in the SEQUENCE operation in this
7520 static int _nfs41_proc_fsid_present(struct inode
*inode
, const struct cred
*cred
)
7522 struct nfs_server
*server
= NFS_SERVER(inode
);
7523 struct rpc_clnt
*clnt
= server
->client
;
7524 struct nfs4_fsid_present_arg args
= {
7525 .fh
= NFS_FH(inode
),
7527 struct nfs4_fsid_present_res res
= {
7529 struct rpc_message msg
= {
7530 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_FSID_PRESENT
],
7537 res
.fh
= nfs_alloc_fhandle();
7541 nfs4_init_sequence(&args
.seq_args
, &res
.seq_res
, 0, 1);
7542 status
= nfs4_call_sync_sequence(clnt
, server
, &msg
,
7543 &args
.seq_args
, &res
.seq_res
);
7544 nfs_free_fhandle(res
.fh
);
7545 if (status
== NFS4_OK
&&
7546 res
.seq_res
.sr_status_flags
& SEQ4_STATUS_LEASE_MOVED
)
7547 status
= -NFS4ERR_LEASE_MOVED
;
7551 #endif /* CONFIG_NFS_V4_1 */
7554 * nfs4_proc_fsid_present - Is this FSID present or absent on server?
7555 * @inode: inode on FSID to check
7556 * @cred: credential to use for this operation
7558 * Server indicates whether the FSID is present, moved, or not
7559 * recognized. This operation is necessary to clear a LEASE_MOVED
7560 * condition for this client ID.
7562 * Returns NFS4_OK if the FSID is present on this server,
7563 * -NFS4ERR_MOVED if the FSID is no longer present, a negative
7564 * NFS4ERR code if some error occurred on the server, or a
7565 * negative errno if a local failure occurred.
7567 int nfs4_proc_fsid_present(struct inode
*inode
, const struct cred
*cred
)
7569 struct nfs_server
*server
= NFS_SERVER(inode
);
7570 struct nfs_client
*clp
= server
->nfs_client
;
7571 const struct nfs4_mig_recovery_ops
*ops
=
7572 clp
->cl_mvops
->mig_recovery_ops
;
7573 struct nfs4_exception exception
= {
7574 .interruptible
= true,
7578 dprintk("%s: FSID %llx:%llx on \"%s\"\n", __func__
,
7579 (unsigned long long)server
->fsid
.major
,
7580 (unsigned long long)server
->fsid
.minor
,
7582 nfs_display_fhandle(NFS_FH(inode
), __func__
);
7585 status
= ops
->fsid_present(inode
, cred
);
7586 if (status
!= -NFS4ERR_DELAY
)
7588 nfs4_handle_exception(server
, status
, &exception
);
7589 } while (exception
.retry
);
7594 * If 'use_integrity' is true and the state managment nfs_client
7595 * cl_rpcclient is using krb5i/p, use the integrity protected cl_rpcclient
7596 * and the machine credential as per RFC3530bis and RFC5661 Security
7597 * Considerations sections. Otherwise, just use the user cred with the
7598 * filesystem's rpc_client.
7600 static int _nfs4_proc_secinfo(struct inode
*dir
, const struct qstr
*name
, struct nfs4_secinfo_flavors
*flavors
, bool use_integrity
)
7603 struct nfs4_secinfo_arg args
= {
7604 .dir_fh
= NFS_FH(dir
),
7607 struct nfs4_secinfo_res res
= {
7610 struct rpc_message msg
= {
7611 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SECINFO
],
7615 struct rpc_clnt
*clnt
= NFS_SERVER(dir
)->client
;
7616 const struct cred
*cred
= NULL
;
7618 if (use_integrity
) {
7619 clnt
= NFS_SERVER(dir
)->nfs_client
->cl_rpcclient
;
7620 cred
= nfs4_get_clid_cred(NFS_SERVER(dir
)->nfs_client
);
7621 msg
.rpc_cred
= cred
;
7624 dprintk("NFS call secinfo %s\n", name
->name
);
7626 nfs4_state_protect(NFS_SERVER(dir
)->nfs_client
,
7627 NFS_SP4_MACH_CRED_SECINFO
, &clnt
, &msg
);
7629 status
= nfs4_call_sync(clnt
, NFS_SERVER(dir
), &msg
, &args
.seq_args
,
7631 dprintk("NFS reply secinfo: %d\n", status
);
7638 int nfs4_proc_secinfo(struct inode
*dir
, const struct qstr
*name
,
7639 struct nfs4_secinfo_flavors
*flavors
)
7641 struct nfs4_exception exception
= {
7642 .interruptible
= true,
7646 err
= -NFS4ERR_WRONGSEC
;
7648 /* try to use integrity protection with machine cred */
7649 if (_nfs4_is_integrity_protected(NFS_SERVER(dir
)->nfs_client
))
7650 err
= _nfs4_proc_secinfo(dir
, name
, flavors
, true);
7653 * if unable to use integrity protection, or SECINFO with
7654 * integrity protection returns NFS4ERR_WRONGSEC (which is
7655 * disallowed by spec, but exists in deployed servers) use
7656 * the current filesystem's rpc_client and the user cred.
7658 if (err
== -NFS4ERR_WRONGSEC
)
7659 err
= _nfs4_proc_secinfo(dir
, name
, flavors
, false);
7661 trace_nfs4_secinfo(dir
, name
, err
);
7662 err
= nfs4_handle_exception(NFS_SERVER(dir
), err
,
7664 } while (exception
.retry
);
7668 #ifdef CONFIG_NFS_V4_1
7670 * Check the exchange flags returned by the server for invalid flags, having
7671 * both PNFS and NON_PNFS flags set, and not having one of NON_PNFS, PNFS, or
7674 static int nfs4_check_cl_exchange_flags(u32 flags
)
7676 if (flags
& ~EXCHGID4_FLAG_MASK_R
)
7678 if ((flags
& EXCHGID4_FLAG_USE_PNFS_MDS
) &&
7679 (flags
& EXCHGID4_FLAG_USE_NON_PNFS
))
7681 if (!(flags
& (EXCHGID4_FLAG_MASK_PNFS
)))
7685 return -NFS4ERR_INVAL
;
7689 nfs41_same_server_scope(struct nfs41_server_scope
*a
,
7690 struct nfs41_server_scope
*b
)
7692 if (a
->server_scope_sz
!= b
->server_scope_sz
)
7694 return memcmp(a
->server_scope
, b
->server_scope
, a
->server_scope_sz
) == 0;
7698 nfs4_bind_one_conn_to_session_done(struct rpc_task
*task
, void *calldata
)
7702 static const struct rpc_call_ops nfs4_bind_one_conn_to_session_ops
= {
7703 .rpc_call_done
= &nfs4_bind_one_conn_to_session_done
,
7707 * nfs4_proc_bind_one_conn_to_session()
7709 * The 4.1 client currently uses the same TCP connection for the
7710 * fore and backchannel.
7713 int nfs4_proc_bind_one_conn_to_session(struct rpc_clnt
*clnt
,
7714 struct rpc_xprt
*xprt
,
7715 struct nfs_client
*clp
,
7716 const struct cred
*cred
)
7719 struct nfs41_bind_conn_to_session_args args
= {
7721 .dir
= NFS4_CDFC4_FORE_OR_BOTH
,
7723 struct nfs41_bind_conn_to_session_res res
;
7724 struct rpc_message msg
= {
7726 &nfs4_procedures
[NFSPROC4_CLNT_BIND_CONN_TO_SESSION
],
7731 struct rpc_task_setup task_setup_data
= {
7734 .callback_ops
= &nfs4_bind_one_conn_to_session_ops
,
7735 .rpc_message
= &msg
,
7736 .flags
= RPC_TASK_TIMEOUT
,
7738 struct rpc_task
*task
;
7740 nfs4_copy_sessionid(&args
.sessionid
, &clp
->cl_session
->sess_id
);
7741 if (!(clp
->cl_session
->flags
& SESSION4_BACK_CHAN
))
7742 args
.dir
= NFS4_CDFC4_FORE
;
7744 /* Do not set the backchannel flag unless this is clnt->cl_xprt */
7745 if (xprt
!= rcu_access_pointer(clnt
->cl_xprt
))
7746 args
.dir
= NFS4_CDFC4_FORE
;
7748 task
= rpc_run_task(&task_setup_data
);
7749 if (!IS_ERR(task
)) {
7750 status
= task
->tk_status
;
7753 status
= PTR_ERR(task
);
7754 trace_nfs4_bind_conn_to_session(clp
, status
);
7756 if (memcmp(res
.sessionid
.data
,
7757 clp
->cl_session
->sess_id
.data
, NFS4_MAX_SESSIONID_LEN
)) {
7758 dprintk("NFS: %s: Session ID mismatch\n", __func__
);
7761 if ((res
.dir
& args
.dir
) != res
.dir
|| res
.dir
== 0) {
7762 dprintk("NFS: %s: Unexpected direction from server\n",
7766 if (res
.use_conn_in_rdma_mode
!= args
.use_conn_in_rdma_mode
) {
7767 dprintk("NFS: %s: Server returned RDMA mode = true\n",
7776 struct rpc_bind_conn_calldata
{
7777 struct nfs_client
*clp
;
7778 const struct cred
*cred
;
7782 nfs4_proc_bind_conn_to_session_callback(struct rpc_clnt
*clnt
,
7783 struct rpc_xprt
*xprt
,
7786 struct rpc_bind_conn_calldata
*p
= calldata
;
7788 return nfs4_proc_bind_one_conn_to_session(clnt
, xprt
, p
->clp
, p
->cred
);
7791 int nfs4_proc_bind_conn_to_session(struct nfs_client
*clp
, const struct cred
*cred
)
7793 struct rpc_bind_conn_calldata data
= {
7797 return rpc_clnt_iterate_for_each_xprt(clp
->cl_rpcclient
,
7798 nfs4_proc_bind_conn_to_session_callback
, &data
);
7802 * Minimum set of SP4_MACH_CRED operations from RFC 5661 in the enforce map
7803 * and operations we'd like to see to enable certain features in the allow map
7805 static const struct nfs41_state_protection nfs4_sp4_mach_cred_request
= {
7806 .how
= SP4_MACH_CRED
,
7807 .enforce
.u
.words
= {
7808 [1] = 1 << (OP_BIND_CONN_TO_SESSION
- 32) |
7809 1 << (OP_EXCHANGE_ID
- 32) |
7810 1 << (OP_CREATE_SESSION
- 32) |
7811 1 << (OP_DESTROY_SESSION
- 32) |
7812 1 << (OP_DESTROY_CLIENTID
- 32)
7815 [0] = 1 << (OP_CLOSE
) |
7816 1 << (OP_OPEN_DOWNGRADE
) |
7818 1 << (OP_DELEGRETURN
) |
7820 [1] = 1 << (OP_SECINFO
- 32) |
7821 1 << (OP_SECINFO_NO_NAME
- 32) |
7822 1 << (OP_LAYOUTRETURN
- 32) |
7823 1 << (OP_TEST_STATEID
- 32) |
7824 1 << (OP_FREE_STATEID
- 32) |
7825 1 << (OP_WRITE
- 32)
7830 * Select the state protection mode for client `clp' given the server results
7831 * from exchange_id in `sp'.
7833 * Returns 0 on success, negative errno otherwise.
7835 static int nfs4_sp4_select_mode(struct nfs_client
*clp
,
7836 struct nfs41_state_protection
*sp
)
7838 static const u32 supported_enforce
[NFS4_OP_MAP_NUM_WORDS
] = {
7839 [1] = 1 << (OP_BIND_CONN_TO_SESSION
- 32) |
7840 1 << (OP_EXCHANGE_ID
- 32) |
7841 1 << (OP_CREATE_SESSION
- 32) |
7842 1 << (OP_DESTROY_SESSION
- 32) |
7843 1 << (OP_DESTROY_CLIENTID
- 32)
7845 unsigned long flags
= 0;
7849 if (sp
->how
== SP4_MACH_CRED
) {
7850 /* Print state protect result */
7851 dfprintk(MOUNT
, "Server SP4_MACH_CRED support:\n");
7852 for (i
= 0; i
<= LAST_NFS4_OP
; i
++) {
7853 if (test_bit(i
, sp
->enforce
.u
.longs
))
7854 dfprintk(MOUNT
, " enforce op %d\n", i
);
7855 if (test_bit(i
, sp
->allow
.u
.longs
))
7856 dfprintk(MOUNT
, " allow op %d\n", i
);
7859 /* make sure nothing is on enforce list that isn't supported */
7860 for (i
= 0; i
< NFS4_OP_MAP_NUM_WORDS
; i
++) {
7861 if (sp
->enforce
.u
.words
[i
] & ~supported_enforce
[i
]) {
7862 dfprintk(MOUNT
, "sp4_mach_cred: disabled\n");
7869 * Minimal mode - state operations are allowed to use machine
7870 * credential. Note this already happens by default, so the
7871 * client doesn't have to do anything more than the negotiation.
7873 * NOTE: we don't care if EXCHANGE_ID is in the list -
7874 * we're already using the machine cred for exchange_id
7875 * and will never use a different cred.
7877 if (test_bit(OP_BIND_CONN_TO_SESSION
, sp
->enforce
.u
.longs
) &&
7878 test_bit(OP_CREATE_SESSION
, sp
->enforce
.u
.longs
) &&
7879 test_bit(OP_DESTROY_SESSION
, sp
->enforce
.u
.longs
) &&
7880 test_bit(OP_DESTROY_CLIENTID
, sp
->enforce
.u
.longs
)) {
7881 dfprintk(MOUNT
, "sp4_mach_cred:\n");
7882 dfprintk(MOUNT
, " minimal mode enabled\n");
7883 __set_bit(NFS_SP4_MACH_CRED_MINIMAL
, &flags
);
7885 dfprintk(MOUNT
, "sp4_mach_cred: disabled\n");
7890 if (test_bit(OP_CLOSE
, sp
->allow
.u
.longs
) &&
7891 test_bit(OP_OPEN_DOWNGRADE
, sp
->allow
.u
.longs
) &&
7892 test_bit(OP_DELEGRETURN
, sp
->allow
.u
.longs
) &&
7893 test_bit(OP_LOCKU
, sp
->allow
.u
.longs
)) {
7894 dfprintk(MOUNT
, " cleanup mode enabled\n");
7895 __set_bit(NFS_SP4_MACH_CRED_CLEANUP
, &flags
);
7898 if (test_bit(OP_LAYOUTRETURN
, sp
->allow
.u
.longs
)) {
7899 dfprintk(MOUNT
, " pnfs cleanup mode enabled\n");
7900 __set_bit(NFS_SP4_MACH_CRED_PNFS_CLEANUP
, &flags
);
7903 if (test_bit(OP_SECINFO
, sp
->allow
.u
.longs
) &&
7904 test_bit(OP_SECINFO_NO_NAME
, sp
->allow
.u
.longs
)) {
7905 dfprintk(MOUNT
, " secinfo mode enabled\n");
7906 __set_bit(NFS_SP4_MACH_CRED_SECINFO
, &flags
);
7909 if (test_bit(OP_TEST_STATEID
, sp
->allow
.u
.longs
) &&
7910 test_bit(OP_FREE_STATEID
, sp
->allow
.u
.longs
)) {
7911 dfprintk(MOUNT
, " stateid mode enabled\n");
7912 __set_bit(NFS_SP4_MACH_CRED_STATEID
, &flags
);
7915 if (test_bit(OP_WRITE
, sp
->allow
.u
.longs
)) {
7916 dfprintk(MOUNT
, " write mode enabled\n");
7917 __set_bit(NFS_SP4_MACH_CRED_WRITE
, &flags
);
7920 if (test_bit(OP_COMMIT
, sp
->allow
.u
.longs
)) {
7921 dfprintk(MOUNT
, " commit mode enabled\n");
7922 __set_bit(NFS_SP4_MACH_CRED_COMMIT
, &flags
);
7926 clp
->cl_sp4_flags
= flags
;
7930 struct nfs41_exchange_id_data
{
7931 struct nfs41_exchange_id_res res
;
7932 struct nfs41_exchange_id_args args
;
7935 static void nfs4_exchange_id_release(void *data
)
7937 struct nfs41_exchange_id_data
*cdata
=
7938 (struct nfs41_exchange_id_data
*)data
;
7940 nfs_put_client(cdata
->args
.client
);
7941 kfree(cdata
->res
.impl_id
);
7942 kfree(cdata
->res
.server_scope
);
7943 kfree(cdata
->res
.server_owner
);
7947 static const struct rpc_call_ops nfs4_exchange_id_call_ops
= {
7948 .rpc_release
= nfs4_exchange_id_release
,
7952 * _nfs4_proc_exchange_id()
7954 * Wrapper for EXCHANGE_ID operation.
7956 static struct rpc_task
*
7957 nfs4_run_exchange_id(struct nfs_client
*clp
, const struct cred
*cred
,
7958 u32 sp4_how
, struct rpc_xprt
*xprt
)
7960 struct rpc_message msg
= {
7961 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_EXCHANGE_ID
],
7964 struct rpc_task_setup task_setup_data
= {
7965 .rpc_client
= clp
->cl_rpcclient
,
7966 .callback_ops
= &nfs4_exchange_id_call_ops
,
7967 .rpc_message
= &msg
,
7968 .flags
= RPC_TASK_TIMEOUT
,
7970 struct nfs41_exchange_id_data
*calldata
;
7973 if (!refcount_inc_not_zero(&clp
->cl_count
))
7974 return ERR_PTR(-EIO
);
7977 calldata
= kzalloc(sizeof(*calldata
), GFP_NOFS
);
7981 nfs4_init_boot_verifier(clp
, &calldata
->args
.verifier
);
7983 status
= nfs4_init_uniform_client_string(clp
);
7987 calldata
->res
.server_owner
= kzalloc(sizeof(struct nfs41_server_owner
),
7990 if (unlikely(calldata
->res
.server_owner
== NULL
))
7993 calldata
->res
.server_scope
= kzalloc(sizeof(struct nfs41_server_scope
),
7995 if (unlikely(calldata
->res
.server_scope
== NULL
))
7996 goto out_server_owner
;
7998 calldata
->res
.impl_id
= kzalloc(sizeof(struct nfs41_impl_id
), GFP_NOFS
);
7999 if (unlikely(calldata
->res
.impl_id
== NULL
))
8000 goto out_server_scope
;
8004 calldata
->args
.state_protect
.how
= SP4_NONE
;
8008 calldata
->args
.state_protect
= nfs4_sp4_mach_cred_request
;
8018 task_setup_data
.rpc_xprt
= xprt
;
8019 task_setup_data
.flags
|= RPC_TASK_SOFTCONN
;
8020 memcpy(calldata
->args
.verifier
.data
, clp
->cl_confirm
.data
,
8021 sizeof(calldata
->args
.verifier
.data
));
8023 calldata
->args
.client
= clp
;
8024 calldata
->args
.flags
= EXCHGID4_FLAG_SUPP_MOVED_REFER
|
8025 EXCHGID4_FLAG_BIND_PRINC_STATEID
;
8026 #ifdef CONFIG_NFS_V4_1_MIGRATION
8027 calldata
->args
.flags
|= EXCHGID4_FLAG_SUPP_MOVED_MIGR
;
8029 msg
.rpc_argp
= &calldata
->args
;
8030 msg
.rpc_resp
= &calldata
->res
;
8031 task_setup_data
.callback_data
= calldata
;
8033 return rpc_run_task(&task_setup_data
);
8036 kfree(calldata
->res
.impl_id
);
8038 kfree(calldata
->res
.server_scope
);
8040 kfree(calldata
->res
.server_owner
);
8044 nfs_put_client(clp
);
8045 return ERR_PTR(status
);
8049 * _nfs4_proc_exchange_id()
8051 * Wrapper for EXCHANGE_ID operation.
8053 static int _nfs4_proc_exchange_id(struct nfs_client
*clp
, const struct cred
*cred
,
8056 struct rpc_task
*task
;
8057 struct nfs41_exchange_id_args
*argp
;
8058 struct nfs41_exchange_id_res
*resp
;
8061 task
= nfs4_run_exchange_id(clp
, cred
, sp4_how
, NULL
);
8063 return PTR_ERR(task
);
8065 argp
= task
->tk_msg
.rpc_argp
;
8066 resp
= task
->tk_msg
.rpc_resp
;
8067 status
= task
->tk_status
;
8071 status
= nfs4_check_cl_exchange_flags(resp
->flags
);
8075 status
= nfs4_sp4_select_mode(clp
, &resp
->state_protect
);
8079 clp
->cl_clientid
= resp
->clientid
;
8080 clp
->cl_exchange_flags
= resp
->flags
;
8081 clp
->cl_seqid
= resp
->seqid
;
8082 /* Client ID is not confirmed */
8083 if (!(resp
->flags
& EXCHGID4_FLAG_CONFIRMED_R
))
8084 clear_bit(NFS4_SESSION_ESTABLISHED
,
8085 &clp
->cl_session
->session_state
);
8087 if (clp
->cl_serverscope
!= NULL
&&
8088 !nfs41_same_server_scope(clp
->cl_serverscope
,
8089 resp
->server_scope
)) {
8090 dprintk("%s: server_scope mismatch detected\n",
8092 set_bit(NFS4CLNT_SERVER_SCOPE_MISMATCH
, &clp
->cl_state
);
8095 swap(clp
->cl_serverowner
, resp
->server_owner
);
8096 swap(clp
->cl_serverscope
, resp
->server_scope
);
8097 swap(clp
->cl_implid
, resp
->impl_id
);
8099 /* Save the EXCHANGE_ID verifier session trunk tests */
8100 memcpy(clp
->cl_confirm
.data
, argp
->verifier
.data
,
8101 sizeof(clp
->cl_confirm
.data
));
8103 trace_nfs4_exchange_id(clp
, status
);
8109 * nfs4_proc_exchange_id()
8111 * Returns zero, a negative errno, or a negative NFS4ERR status code.
8113 * Since the clientid has expired, all compounds using sessions
8114 * associated with the stale clientid will be returning
8115 * NFS4ERR_BADSESSION in the sequence operation, and will therefore
8116 * be in some phase of session reset.
8118 * Will attempt to negotiate SP4_MACH_CRED if krb5i / krb5p auth is used.
8120 int nfs4_proc_exchange_id(struct nfs_client
*clp
, const struct cred
*cred
)
8122 rpc_authflavor_t authflavor
= clp
->cl_rpcclient
->cl_auth
->au_flavor
;
8125 /* try SP4_MACH_CRED if krb5i/p */
8126 if (authflavor
== RPC_AUTH_GSS_KRB5I
||
8127 authflavor
== RPC_AUTH_GSS_KRB5P
) {
8128 status
= _nfs4_proc_exchange_id(clp
, cred
, SP4_MACH_CRED
);
8134 return _nfs4_proc_exchange_id(clp
, cred
, SP4_NONE
);
8138 * nfs4_test_session_trunk
8140 * This is an add_xprt_test() test function called from
8141 * rpc_clnt_setup_test_and_add_xprt.
8143 * The rpc_xprt_switch is referrenced by rpc_clnt_setup_test_and_add_xprt
8144 * and is dereferrenced in nfs4_exchange_id_release
8146 * Upon success, add the new transport to the rpc_clnt
8148 * @clnt: struct rpc_clnt to get new transport
8149 * @xprt: the rpc_xprt to test
8150 * @data: call data for _nfs4_proc_exchange_id.
8152 void nfs4_test_session_trunk(struct rpc_clnt
*clnt
, struct rpc_xprt
*xprt
,
8155 struct nfs4_add_xprt_data
*adata
= (struct nfs4_add_xprt_data
*)data
;
8156 struct rpc_task
*task
;
8161 dprintk("--> %s try %s\n", __func__
,
8162 xprt
->address_strings
[RPC_DISPLAY_ADDR
]);
8164 sp4_how
= (adata
->clp
->cl_sp4_flags
== 0 ? SP4_NONE
: SP4_MACH_CRED
);
8166 /* Test connection for session trunking. Async exchange_id call */
8167 task
= nfs4_run_exchange_id(adata
->clp
, adata
->cred
, sp4_how
, xprt
);
8171 status
= task
->tk_status
;
8173 status
= nfs4_detect_session_trunking(adata
->clp
,
8174 task
->tk_msg
.rpc_resp
, xprt
);
8177 rpc_clnt_xprt_switch_add_xprt(clnt
, xprt
);
8181 EXPORT_SYMBOL_GPL(nfs4_test_session_trunk
);
8183 static int _nfs4_proc_destroy_clientid(struct nfs_client
*clp
,
8184 const struct cred
*cred
)
8186 struct rpc_message msg
= {
8187 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_DESTROY_CLIENTID
],
8193 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
8194 trace_nfs4_destroy_clientid(clp
, status
);
8196 dprintk("NFS: Got error %d from the server %s on "
8197 "DESTROY_CLIENTID.", status
, clp
->cl_hostname
);
8201 static int nfs4_proc_destroy_clientid(struct nfs_client
*clp
,
8202 const struct cred
*cred
)
8207 for (loop
= NFS4_MAX_LOOP_ON_RECOVER
; loop
!= 0; loop
--) {
8208 ret
= _nfs4_proc_destroy_clientid(clp
, cred
);
8210 case -NFS4ERR_DELAY
:
8211 case -NFS4ERR_CLIENTID_BUSY
:
8221 int nfs4_destroy_clientid(struct nfs_client
*clp
)
8223 const struct cred
*cred
;
8226 if (clp
->cl_mvops
->minor_version
< 1)
8228 if (clp
->cl_exchange_flags
== 0)
8230 if (clp
->cl_preserve_clid
)
8232 cred
= nfs4_get_clid_cred(clp
);
8233 ret
= nfs4_proc_destroy_clientid(clp
, cred
);
8237 case -NFS4ERR_STALE_CLIENTID
:
8238 clp
->cl_exchange_flags
= 0;
8244 struct nfs4_get_lease_time_data
{
8245 struct nfs4_get_lease_time_args
*args
;
8246 struct nfs4_get_lease_time_res
*res
;
8247 struct nfs_client
*clp
;
8250 static void nfs4_get_lease_time_prepare(struct rpc_task
*task
,
8253 struct nfs4_get_lease_time_data
*data
=
8254 (struct nfs4_get_lease_time_data
*)calldata
;
8256 dprintk("--> %s\n", __func__
);
8257 /* just setup sequence, do not trigger session recovery
8258 since we're invoked within one */
8259 nfs4_setup_sequence(data
->clp
,
8260 &data
->args
->la_seq_args
,
8261 &data
->res
->lr_seq_res
,
8263 dprintk("<-- %s\n", __func__
);
8267 * Called from nfs4_state_manager thread for session setup, so don't recover
8268 * from sequence operation or clientid errors.
8270 static void nfs4_get_lease_time_done(struct rpc_task
*task
, void *calldata
)
8272 struct nfs4_get_lease_time_data
*data
=
8273 (struct nfs4_get_lease_time_data
*)calldata
;
8275 dprintk("--> %s\n", __func__
);
8276 if (!nfs41_sequence_done(task
, &data
->res
->lr_seq_res
))
8278 switch (task
->tk_status
) {
8279 case -NFS4ERR_DELAY
:
8280 case -NFS4ERR_GRACE
:
8281 dprintk("%s Retry: tk_status %d\n", __func__
, task
->tk_status
);
8282 rpc_delay(task
, NFS4_POLL_RETRY_MIN
);
8283 task
->tk_status
= 0;
8285 case -NFS4ERR_RETRY_UNCACHED_REP
:
8286 rpc_restart_call_prepare(task
);
8289 dprintk("<-- %s\n", __func__
);
8292 static const struct rpc_call_ops nfs4_get_lease_time_ops
= {
8293 .rpc_call_prepare
= nfs4_get_lease_time_prepare
,
8294 .rpc_call_done
= nfs4_get_lease_time_done
,
8297 int nfs4_proc_get_lease_time(struct nfs_client
*clp
, struct nfs_fsinfo
*fsinfo
)
8299 struct rpc_task
*task
;
8300 struct nfs4_get_lease_time_args args
;
8301 struct nfs4_get_lease_time_res res
= {
8302 .lr_fsinfo
= fsinfo
,
8304 struct nfs4_get_lease_time_data data
= {
8309 struct rpc_message msg
= {
8310 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GET_LEASE_TIME
],
8314 struct rpc_task_setup task_setup
= {
8315 .rpc_client
= clp
->cl_rpcclient
,
8316 .rpc_message
= &msg
,
8317 .callback_ops
= &nfs4_get_lease_time_ops
,
8318 .callback_data
= &data
,
8319 .flags
= RPC_TASK_TIMEOUT
,
8323 nfs4_init_sequence(&args
.la_seq_args
, &res
.lr_seq_res
, 0, 1);
8324 task
= rpc_run_task(&task_setup
);
8327 return PTR_ERR(task
);
8329 status
= task
->tk_status
;
8335 * Initialize the values to be used by the client in CREATE_SESSION
8336 * If nfs4_init_session set the fore channel request and response sizes,
8339 * Set the back channel max_resp_sz_cached to zero to force the client to
8340 * always set csa_cachethis to FALSE because the current implementation
8341 * of the back channel DRC only supports caching the CB_SEQUENCE operation.
8343 static void nfs4_init_channel_attrs(struct nfs41_create_session_args
*args
,
8344 struct rpc_clnt
*clnt
)
8346 unsigned int max_rqst_sz
, max_resp_sz
;
8347 unsigned int max_bc_payload
= rpc_max_bc_payload(clnt
);
8349 max_rqst_sz
= NFS_MAX_FILE_IO_SIZE
+ nfs41_maxwrite_overhead
;
8350 max_resp_sz
= NFS_MAX_FILE_IO_SIZE
+ nfs41_maxread_overhead
;
8352 /* Fore channel attributes */
8353 args
->fc_attrs
.max_rqst_sz
= max_rqst_sz
;
8354 args
->fc_attrs
.max_resp_sz
= max_resp_sz
;
8355 args
->fc_attrs
.max_ops
= NFS4_MAX_OPS
;
8356 args
->fc_attrs
.max_reqs
= max_session_slots
;
8358 dprintk("%s: Fore Channel : max_rqst_sz=%u max_resp_sz=%u "
8359 "max_ops=%u max_reqs=%u\n",
8361 args
->fc_attrs
.max_rqst_sz
, args
->fc_attrs
.max_resp_sz
,
8362 args
->fc_attrs
.max_ops
, args
->fc_attrs
.max_reqs
);
8364 /* Back channel attributes */
8365 args
->bc_attrs
.max_rqst_sz
= max_bc_payload
;
8366 args
->bc_attrs
.max_resp_sz
= max_bc_payload
;
8367 args
->bc_attrs
.max_resp_sz_cached
= 0;
8368 args
->bc_attrs
.max_ops
= NFS4_MAX_BACK_CHANNEL_OPS
;
8369 args
->bc_attrs
.max_reqs
= max_t(unsigned short, max_session_cb_slots
, 1);
8371 dprintk("%s: Back Channel : max_rqst_sz=%u max_resp_sz=%u "
8372 "max_resp_sz_cached=%u max_ops=%u max_reqs=%u\n",
8374 args
->bc_attrs
.max_rqst_sz
, args
->bc_attrs
.max_resp_sz
,
8375 args
->bc_attrs
.max_resp_sz_cached
, args
->bc_attrs
.max_ops
,
8376 args
->bc_attrs
.max_reqs
);
8379 static int nfs4_verify_fore_channel_attrs(struct nfs41_create_session_args
*args
,
8380 struct nfs41_create_session_res
*res
)
8382 struct nfs4_channel_attrs
*sent
= &args
->fc_attrs
;
8383 struct nfs4_channel_attrs
*rcvd
= &res
->fc_attrs
;
8385 if (rcvd
->max_resp_sz
> sent
->max_resp_sz
)
8388 * Our requested max_ops is the minimum we need; we're not
8389 * prepared to break up compounds into smaller pieces than that.
8390 * So, no point even trying to continue if the server won't
8393 if (rcvd
->max_ops
< sent
->max_ops
)
8395 if (rcvd
->max_reqs
== 0)
8397 if (rcvd
->max_reqs
> NFS4_MAX_SLOT_TABLE
)
8398 rcvd
->max_reqs
= NFS4_MAX_SLOT_TABLE
;
8402 static int nfs4_verify_back_channel_attrs(struct nfs41_create_session_args
*args
,
8403 struct nfs41_create_session_res
*res
)
8405 struct nfs4_channel_attrs
*sent
= &args
->bc_attrs
;
8406 struct nfs4_channel_attrs
*rcvd
= &res
->bc_attrs
;
8408 if (!(res
->flags
& SESSION4_BACK_CHAN
))
8410 if (rcvd
->max_rqst_sz
> sent
->max_rqst_sz
)
8412 if (rcvd
->max_resp_sz
< sent
->max_resp_sz
)
8414 if (rcvd
->max_resp_sz_cached
> sent
->max_resp_sz_cached
)
8416 if (rcvd
->max_ops
> sent
->max_ops
)
8418 if (rcvd
->max_reqs
> sent
->max_reqs
)
8424 static int nfs4_verify_channel_attrs(struct nfs41_create_session_args
*args
,
8425 struct nfs41_create_session_res
*res
)
8429 ret
= nfs4_verify_fore_channel_attrs(args
, res
);
8432 return nfs4_verify_back_channel_attrs(args
, res
);
8435 static void nfs4_update_session(struct nfs4_session
*session
,
8436 struct nfs41_create_session_res
*res
)
8438 nfs4_copy_sessionid(&session
->sess_id
, &res
->sessionid
);
8439 /* Mark client id and session as being confirmed */
8440 session
->clp
->cl_exchange_flags
|= EXCHGID4_FLAG_CONFIRMED_R
;
8441 set_bit(NFS4_SESSION_ESTABLISHED
, &session
->session_state
);
8442 session
->flags
= res
->flags
;
8443 memcpy(&session
->fc_attrs
, &res
->fc_attrs
, sizeof(session
->fc_attrs
));
8444 if (res
->flags
& SESSION4_BACK_CHAN
)
8445 memcpy(&session
->bc_attrs
, &res
->bc_attrs
,
8446 sizeof(session
->bc_attrs
));
8449 static int _nfs4_proc_create_session(struct nfs_client
*clp
,
8450 const struct cred
*cred
)
8452 struct nfs4_session
*session
= clp
->cl_session
;
8453 struct nfs41_create_session_args args
= {
8455 .clientid
= clp
->cl_clientid
,
8456 .seqid
= clp
->cl_seqid
,
8457 .cb_program
= NFS4_CALLBACK
,
8459 struct nfs41_create_session_res res
;
8461 struct rpc_message msg
= {
8462 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_CREATE_SESSION
],
8469 nfs4_init_channel_attrs(&args
, clp
->cl_rpcclient
);
8470 args
.flags
= (SESSION4_PERSIST
| SESSION4_BACK_CHAN
);
8472 status
= rpc_call_sync(session
->clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
8473 trace_nfs4_create_session(clp
, status
);
8476 case -NFS4ERR_STALE_CLIENTID
:
8477 case -NFS4ERR_DELAY
:
8486 /* Verify the session's negotiated channel_attrs values */
8487 status
= nfs4_verify_channel_attrs(&args
, &res
);
8488 /* Increment the clientid slot sequence id */
8491 nfs4_update_session(session
, &res
);
8498 * Issues a CREATE_SESSION operation to the server.
8499 * It is the responsibility of the caller to verify the session is
8500 * expired before calling this routine.
8502 int nfs4_proc_create_session(struct nfs_client
*clp
, const struct cred
*cred
)
8506 struct nfs4_session
*session
= clp
->cl_session
;
8508 dprintk("--> %s clp=%p session=%p\n", __func__
, clp
, session
);
8510 status
= _nfs4_proc_create_session(clp
, cred
);
8514 /* Init or reset the session slot tables */
8515 status
= nfs4_setup_session_slot_tables(session
);
8516 dprintk("slot table setup returned %d\n", status
);
8520 ptr
= (unsigned *)&session
->sess_id
.data
[0];
8521 dprintk("%s client>seqid %d sessionid %u:%u:%u:%u\n", __func__
,
8522 clp
->cl_seqid
, ptr
[0], ptr
[1], ptr
[2], ptr
[3]);
8524 dprintk("<-- %s\n", __func__
);
8529 * Issue the over-the-wire RPC DESTROY_SESSION.
8530 * The caller must serialize access to this routine.
8532 int nfs4_proc_destroy_session(struct nfs4_session
*session
,
8533 const struct cred
*cred
)
8535 struct rpc_message msg
= {
8536 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_DESTROY_SESSION
],
8537 .rpc_argp
= session
,
8542 dprintk("--> nfs4_proc_destroy_session\n");
8544 /* session is still being setup */
8545 if (!test_and_clear_bit(NFS4_SESSION_ESTABLISHED
, &session
->session_state
))
8548 status
= rpc_call_sync(session
->clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
8549 trace_nfs4_destroy_session(session
->clp
, status
);
8552 dprintk("NFS: Got error %d from the server on DESTROY_SESSION. "
8553 "Session has been destroyed regardless...\n", status
);
8555 dprintk("<-- nfs4_proc_destroy_session\n");
8560 * Renew the cl_session lease.
8562 struct nfs4_sequence_data
{
8563 struct nfs_client
*clp
;
8564 struct nfs4_sequence_args args
;
8565 struct nfs4_sequence_res res
;
8568 static void nfs41_sequence_release(void *data
)
8570 struct nfs4_sequence_data
*calldata
= data
;
8571 struct nfs_client
*clp
= calldata
->clp
;
8573 if (refcount_read(&clp
->cl_count
) > 1)
8574 nfs4_schedule_state_renewal(clp
);
8575 nfs_put_client(clp
);
8579 static int nfs41_sequence_handle_errors(struct rpc_task
*task
, struct nfs_client
*clp
)
8581 switch(task
->tk_status
) {
8582 case -NFS4ERR_DELAY
:
8583 rpc_delay(task
, NFS4_POLL_RETRY_MAX
);
8586 nfs4_schedule_lease_recovery(clp
);
8591 static void nfs41_sequence_call_done(struct rpc_task
*task
, void *data
)
8593 struct nfs4_sequence_data
*calldata
= data
;
8594 struct nfs_client
*clp
= calldata
->clp
;
8596 if (!nfs41_sequence_done(task
, task
->tk_msg
.rpc_resp
))
8599 trace_nfs4_sequence(clp
, task
->tk_status
);
8600 if (task
->tk_status
< 0) {
8601 dprintk("%s ERROR %d\n", __func__
, task
->tk_status
);
8602 if (refcount_read(&clp
->cl_count
) == 1)
8605 if (nfs41_sequence_handle_errors(task
, clp
) == -EAGAIN
) {
8606 rpc_restart_call_prepare(task
);
8610 dprintk("%s rpc_cred %p\n", __func__
, task
->tk_msg
.rpc_cred
);
8612 dprintk("<-- %s\n", __func__
);
8615 static void nfs41_sequence_prepare(struct rpc_task
*task
, void *data
)
8617 struct nfs4_sequence_data
*calldata
= data
;
8618 struct nfs_client
*clp
= calldata
->clp
;
8619 struct nfs4_sequence_args
*args
;
8620 struct nfs4_sequence_res
*res
;
8622 args
= task
->tk_msg
.rpc_argp
;
8623 res
= task
->tk_msg
.rpc_resp
;
8625 nfs4_setup_sequence(clp
, args
, res
, task
);
8628 static const struct rpc_call_ops nfs41_sequence_ops
= {
8629 .rpc_call_done
= nfs41_sequence_call_done
,
8630 .rpc_call_prepare
= nfs41_sequence_prepare
,
8631 .rpc_release
= nfs41_sequence_release
,
8634 static struct rpc_task
*_nfs41_proc_sequence(struct nfs_client
*clp
,
8635 const struct cred
*cred
,
8636 struct nfs4_slot
*slot
,
8639 struct nfs4_sequence_data
*calldata
;
8640 struct rpc_message msg
= {
8641 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SEQUENCE
],
8644 struct rpc_task_setup task_setup_data
= {
8645 .rpc_client
= clp
->cl_rpcclient
,
8646 .rpc_message
= &msg
,
8647 .callback_ops
= &nfs41_sequence_ops
,
8648 .flags
= RPC_TASK_ASYNC
| RPC_TASK_TIMEOUT
,
8650 struct rpc_task
*ret
;
8652 ret
= ERR_PTR(-EIO
);
8653 if (!refcount_inc_not_zero(&clp
->cl_count
))
8656 ret
= ERR_PTR(-ENOMEM
);
8657 calldata
= kzalloc(sizeof(*calldata
), GFP_NOFS
);
8658 if (calldata
== NULL
)
8660 nfs4_init_sequence(&calldata
->args
, &calldata
->res
, 0, is_privileged
);
8661 nfs4_sequence_attach_slot(&calldata
->args
, &calldata
->res
, slot
);
8662 msg
.rpc_argp
= &calldata
->args
;
8663 msg
.rpc_resp
= &calldata
->res
;
8664 calldata
->clp
= clp
;
8665 task_setup_data
.callback_data
= calldata
;
8667 ret
= rpc_run_task(&task_setup_data
);
8672 nfs_put_client(clp
);
8674 nfs41_release_slot(slot
);
8678 static int nfs41_proc_async_sequence(struct nfs_client
*clp
, const struct cred
*cred
, unsigned renew_flags
)
8680 struct rpc_task
*task
;
8683 if ((renew_flags
& NFS4_RENEW_TIMEOUT
) == 0)
8685 task
= _nfs41_proc_sequence(clp
, cred
, NULL
, false);
8687 ret
= PTR_ERR(task
);
8689 rpc_put_task_async(task
);
8690 dprintk("<-- %s status=%d\n", __func__
, ret
);
8694 static int nfs4_proc_sequence(struct nfs_client
*clp
, const struct cred
*cred
)
8696 struct rpc_task
*task
;
8699 task
= _nfs41_proc_sequence(clp
, cred
, NULL
, true);
8701 ret
= PTR_ERR(task
);
8704 ret
= rpc_wait_for_completion_task(task
);
8706 ret
= task
->tk_status
;
8709 dprintk("<-- %s status=%d\n", __func__
, ret
);
8713 struct nfs4_reclaim_complete_data
{
8714 struct nfs_client
*clp
;
8715 struct nfs41_reclaim_complete_args arg
;
8716 struct nfs41_reclaim_complete_res res
;
8719 static void nfs4_reclaim_complete_prepare(struct rpc_task
*task
, void *data
)
8721 struct nfs4_reclaim_complete_data
*calldata
= data
;
8723 nfs4_setup_sequence(calldata
->clp
,
8724 &calldata
->arg
.seq_args
,
8725 &calldata
->res
.seq_res
,
8729 static int nfs41_reclaim_complete_handle_errors(struct rpc_task
*task
, struct nfs_client
*clp
)
8731 switch(task
->tk_status
) {
8733 wake_up_all(&clp
->cl_lock_waitq
);
8735 case -NFS4ERR_COMPLETE_ALREADY
:
8736 case -NFS4ERR_WRONG_CRED
: /* What to do here? */
8738 case -NFS4ERR_DELAY
:
8739 rpc_delay(task
, NFS4_POLL_RETRY_MAX
);
8741 case -NFS4ERR_RETRY_UNCACHED_REP
:
8743 case -NFS4ERR_BADSESSION
:
8744 case -NFS4ERR_DEADSESSION
:
8745 case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION
:
8746 nfs4_schedule_session_recovery(clp
->cl_session
,
8750 nfs4_schedule_lease_recovery(clp
);
8755 static void nfs4_reclaim_complete_done(struct rpc_task
*task
, void *data
)
8757 struct nfs4_reclaim_complete_data
*calldata
= data
;
8758 struct nfs_client
*clp
= calldata
->clp
;
8759 struct nfs4_sequence_res
*res
= &calldata
->res
.seq_res
;
8761 dprintk("--> %s\n", __func__
);
8762 if (!nfs41_sequence_done(task
, res
))
8765 trace_nfs4_reclaim_complete(clp
, task
->tk_status
);
8766 if (nfs41_reclaim_complete_handle_errors(task
, clp
) == -EAGAIN
) {
8767 rpc_restart_call_prepare(task
);
8770 dprintk("<-- %s\n", __func__
);
8773 static void nfs4_free_reclaim_complete_data(void *data
)
8775 struct nfs4_reclaim_complete_data
*calldata
= data
;
8780 static const struct rpc_call_ops nfs4_reclaim_complete_call_ops
= {
8781 .rpc_call_prepare
= nfs4_reclaim_complete_prepare
,
8782 .rpc_call_done
= nfs4_reclaim_complete_done
,
8783 .rpc_release
= nfs4_free_reclaim_complete_data
,
8787 * Issue a global reclaim complete.
8789 static int nfs41_proc_reclaim_complete(struct nfs_client
*clp
,
8790 const struct cred
*cred
)
8792 struct nfs4_reclaim_complete_data
*calldata
;
8793 struct rpc_task
*task
;
8794 struct rpc_message msg
= {
8795 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RECLAIM_COMPLETE
],
8798 struct rpc_task_setup task_setup_data
= {
8799 .rpc_client
= clp
->cl_rpcclient
,
8800 .rpc_message
= &msg
,
8801 .callback_ops
= &nfs4_reclaim_complete_call_ops
,
8802 .flags
= RPC_TASK_ASYNC
,
8804 int status
= -ENOMEM
;
8806 dprintk("--> %s\n", __func__
);
8807 calldata
= kzalloc(sizeof(*calldata
), GFP_NOFS
);
8808 if (calldata
== NULL
)
8810 calldata
->clp
= clp
;
8811 calldata
->arg
.one_fs
= 0;
8813 nfs4_init_sequence(&calldata
->arg
.seq_args
, &calldata
->res
.seq_res
, 0, 1);
8814 msg
.rpc_argp
= &calldata
->arg
;
8815 msg
.rpc_resp
= &calldata
->res
;
8816 task_setup_data
.callback_data
= calldata
;
8817 task
= rpc_run_task(&task_setup_data
);
8819 status
= PTR_ERR(task
);
8822 status
= rpc_wait_for_completion_task(task
);
8824 status
= task
->tk_status
;
8827 dprintk("<-- %s status=%d\n", __func__
, status
);
8832 nfs4_layoutget_prepare(struct rpc_task
*task
, void *calldata
)
8834 struct nfs4_layoutget
*lgp
= calldata
;
8835 struct nfs_server
*server
= NFS_SERVER(lgp
->args
.inode
);
8837 dprintk("--> %s\n", __func__
);
8838 nfs4_setup_sequence(server
->nfs_client
, &lgp
->args
.seq_args
,
8839 &lgp
->res
.seq_res
, task
);
8840 dprintk("<-- %s\n", __func__
);
8843 static void nfs4_layoutget_done(struct rpc_task
*task
, void *calldata
)
8845 struct nfs4_layoutget
*lgp
= calldata
;
8847 dprintk("--> %s\n", __func__
);
8848 nfs41_sequence_process(task
, &lgp
->res
.seq_res
);
8849 dprintk("<-- %s\n", __func__
);
8853 nfs4_layoutget_handle_exception(struct rpc_task
*task
,
8854 struct nfs4_layoutget
*lgp
, struct nfs4_exception
*exception
)
8856 struct inode
*inode
= lgp
->args
.inode
;
8857 struct nfs_server
*server
= NFS_SERVER(inode
);
8858 struct pnfs_layout_hdr
*lo
;
8859 int nfs4err
= task
->tk_status
;
8860 int err
, status
= 0;
8863 dprintk("--> %s tk_status => %d\n", __func__
, -task
->tk_status
);
8865 nfs4_sequence_free_slot(&lgp
->res
.seq_res
);
8872 * NFS4ERR_LAYOUTUNAVAILABLE means we are not supposed to use pnfs
8873 * on the file. set tk_status to -ENODATA to tell upper layer to
8876 case -NFS4ERR_LAYOUTUNAVAILABLE
:
8880 * NFS4ERR_BADLAYOUT means the MDS cannot return a layout of
8881 * length lgp->args.minlength != 0 (see RFC5661 section 18.43.3).
8883 case -NFS4ERR_BADLAYOUT
:
8884 status
= -EOVERFLOW
;
8887 * NFS4ERR_LAYOUTTRYLATER is a conflict with another client
8888 * (or clients) writing to the same RAID stripe except when
8889 * the minlength argument is 0 (see RFC5661 section 18.43.3).
8891 * Treat it like we would RECALLCONFLICT -- we retry for a little
8892 * while, and then eventually give up.
8894 case -NFS4ERR_LAYOUTTRYLATER
:
8895 if (lgp
->args
.minlength
== 0) {
8896 status
= -EOVERFLOW
;
8901 case -NFS4ERR_RECALLCONFLICT
:
8902 status
= -ERECALLCONFLICT
;
8904 case -NFS4ERR_DELEG_REVOKED
:
8905 case -NFS4ERR_ADMIN_REVOKED
:
8906 case -NFS4ERR_EXPIRED
:
8907 case -NFS4ERR_BAD_STATEID
:
8908 exception
->timeout
= 0;
8909 spin_lock(&inode
->i_lock
);
8910 lo
= NFS_I(inode
)->layout
;
8911 /* If the open stateid was bad, then recover it. */
8912 if (!lo
|| test_bit(NFS_LAYOUT_INVALID_STID
, &lo
->plh_flags
) ||
8913 !nfs4_stateid_match_other(&lgp
->args
.stateid
, &lo
->plh_stateid
)) {
8914 spin_unlock(&inode
->i_lock
);
8915 exception
->state
= lgp
->args
.ctx
->state
;
8916 exception
->stateid
= &lgp
->args
.stateid
;
8921 * Mark the bad layout state as invalid, then retry
8923 pnfs_mark_layout_stateid_invalid(lo
, &head
);
8924 spin_unlock(&inode
->i_lock
);
8925 nfs_commit_inode(inode
, 0);
8926 pnfs_free_lseg_list(&head
);
8931 err
= nfs4_handle_exception(server
, nfs4err
, exception
);
8933 if (exception
->retry
)
8939 dprintk("<-- %s\n", __func__
);
8943 size_t max_response_pages(struct nfs_server
*server
)
8945 u32 max_resp_sz
= server
->nfs_client
->cl_session
->fc_attrs
.max_resp_sz
;
8946 return nfs_page_array_len(0, max_resp_sz
);
8949 static void nfs4_layoutget_release(void *calldata
)
8951 struct nfs4_layoutget
*lgp
= calldata
;
8953 dprintk("--> %s\n", __func__
);
8954 nfs4_sequence_free_slot(&lgp
->res
.seq_res
);
8955 pnfs_layoutget_free(lgp
);
8956 dprintk("<-- %s\n", __func__
);
8959 static const struct rpc_call_ops nfs4_layoutget_call_ops
= {
8960 .rpc_call_prepare
= nfs4_layoutget_prepare
,
8961 .rpc_call_done
= nfs4_layoutget_done
,
8962 .rpc_release
= nfs4_layoutget_release
,
8965 struct pnfs_layout_segment
*
8966 nfs4_proc_layoutget(struct nfs4_layoutget
*lgp
, long *timeout
)
8968 struct inode
*inode
= lgp
->args
.inode
;
8969 struct nfs_server
*server
= NFS_SERVER(inode
);
8970 struct rpc_task
*task
;
8971 struct rpc_message msg
= {
8972 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LAYOUTGET
],
8973 .rpc_argp
= &lgp
->args
,
8974 .rpc_resp
= &lgp
->res
,
8975 .rpc_cred
= lgp
->cred
,
8977 struct rpc_task_setup task_setup_data
= {
8978 .rpc_client
= server
->client
,
8979 .rpc_message
= &msg
,
8980 .callback_ops
= &nfs4_layoutget_call_ops
,
8981 .callback_data
= lgp
,
8982 .flags
= RPC_TASK_ASYNC
,
8984 struct pnfs_layout_segment
*lseg
= NULL
;
8985 struct nfs4_exception exception
= {
8987 .timeout
= *timeout
,
8991 dprintk("--> %s\n", __func__
);
8993 /* nfs4_layoutget_release calls pnfs_put_layout_hdr */
8994 pnfs_get_layout_hdr(NFS_I(inode
)->layout
);
8996 nfs4_init_sequence(&lgp
->args
.seq_args
, &lgp
->res
.seq_res
, 0, 0);
8998 task
= rpc_run_task(&task_setup_data
);
9000 return ERR_CAST(task
);
9001 status
= rpc_wait_for_completion_task(task
);
9005 if (task
->tk_status
< 0) {
9006 status
= nfs4_layoutget_handle_exception(task
, lgp
, &exception
);
9007 *timeout
= exception
.timeout
;
9008 } else if (lgp
->res
.layoutp
->len
== 0) {
9010 *timeout
= nfs4_update_delay(&exception
.timeout
);
9012 lseg
= pnfs_layout_process(lgp
);
9014 trace_nfs4_layoutget(lgp
->args
.ctx
,
9021 dprintk("<-- %s status=%d\n", __func__
, status
);
9023 return ERR_PTR(status
);
9028 nfs4_layoutreturn_prepare(struct rpc_task
*task
, void *calldata
)
9030 struct nfs4_layoutreturn
*lrp
= calldata
;
9032 dprintk("--> %s\n", __func__
);
9033 nfs4_setup_sequence(lrp
->clp
,
9034 &lrp
->args
.seq_args
,
9037 if (!pnfs_layout_is_valid(lrp
->args
.layout
))
9041 static void nfs4_layoutreturn_done(struct rpc_task
*task
, void *calldata
)
9043 struct nfs4_layoutreturn
*lrp
= calldata
;
9044 struct nfs_server
*server
;
9046 dprintk("--> %s\n", __func__
);
9048 if (!nfs41_sequence_process(task
, &lrp
->res
.seq_res
))
9051 server
= NFS_SERVER(lrp
->args
.inode
);
9052 switch (task
->tk_status
) {
9053 case -NFS4ERR_OLD_STATEID
:
9054 if (nfs4_layoutreturn_refresh_stateid(&lrp
->args
.stateid
,
9060 task
->tk_status
= 0;
9064 case -NFS4ERR_DELAY
:
9065 if (nfs4_async_handle_error(task
, server
, NULL
, NULL
) != -EAGAIN
)
9069 dprintk("<-- %s\n", __func__
);
9072 task
->tk_status
= 0;
9073 nfs4_sequence_free_slot(&lrp
->res
.seq_res
);
9074 rpc_restart_call_prepare(task
);
9077 static void nfs4_layoutreturn_release(void *calldata
)
9079 struct nfs4_layoutreturn
*lrp
= calldata
;
9080 struct pnfs_layout_hdr
*lo
= lrp
->args
.layout
;
9082 dprintk("--> %s\n", __func__
);
9083 pnfs_layoutreturn_free_lsegs(lo
, &lrp
->args
.stateid
, &lrp
->args
.range
,
9084 lrp
->res
.lrs_present
? &lrp
->res
.stateid
: NULL
);
9085 nfs4_sequence_free_slot(&lrp
->res
.seq_res
);
9086 if (lrp
->ld_private
.ops
&& lrp
->ld_private
.ops
->free
)
9087 lrp
->ld_private
.ops
->free(&lrp
->ld_private
);
9088 pnfs_put_layout_hdr(lrp
->args
.layout
);
9089 nfs_iput_and_deactive(lrp
->inode
);
9091 dprintk("<-- %s\n", __func__
);
9094 static const struct rpc_call_ops nfs4_layoutreturn_call_ops
= {
9095 .rpc_call_prepare
= nfs4_layoutreturn_prepare
,
9096 .rpc_call_done
= nfs4_layoutreturn_done
,
9097 .rpc_release
= nfs4_layoutreturn_release
,
9100 int nfs4_proc_layoutreturn(struct nfs4_layoutreturn
*lrp
, bool sync
)
9102 struct rpc_task
*task
;
9103 struct rpc_message msg
= {
9104 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LAYOUTRETURN
],
9105 .rpc_argp
= &lrp
->args
,
9106 .rpc_resp
= &lrp
->res
,
9107 .rpc_cred
= lrp
->cred
,
9109 struct rpc_task_setup task_setup_data
= {
9110 .rpc_client
= NFS_SERVER(lrp
->args
.inode
)->client
,
9111 .rpc_message
= &msg
,
9112 .callback_ops
= &nfs4_layoutreturn_call_ops
,
9113 .callback_data
= lrp
,
9117 nfs4_state_protect(NFS_SERVER(lrp
->args
.inode
)->nfs_client
,
9118 NFS_SP4_MACH_CRED_PNFS_CLEANUP
,
9119 &task_setup_data
.rpc_client
, &msg
);
9121 dprintk("--> %s\n", __func__
);
9123 lrp
->inode
= nfs_igrab_and_active(lrp
->args
.inode
);
9125 nfs4_layoutreturn_release(lrp
);
9128 task_setup_data
.flags
|= RPC_TASK_ASYNC
;
9130 nfs4_init_sequence(&lrp
->args
.seq_args
, &lrp
->res
.seq_res
, 1, 0);
9131 task
= rpc_run_task(&task_setup_data
);
9133 return PTR_ERR(task
);
9135 status
= task
->tk_status
;
9136 trace_nfs4_layoutreturn(lrp
->args
.inode
, &lrp
->args
.stateid
, status
);
9137 dprintk("<-- %s status=%d\n", __func__
, status
);
9143 _nfs4_proc_getdeviceinfo(struct nfs_server
*server
,
9144 struct pnfs_device
*pdev
,
9145 const struct cred
*cred
)
9147 struct nfs4_getdeviceinfo_args args
= {
9149 .notify_types
= NOTIFY_DEVICEID4_CHANGE
|
9150 NOTIFY_DEVICEID4_DELETE
,
9152 struct nfs4_getdeviceinfo_res res
= {
9155 struct rpc_message msg
= {
9156 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GETDEVICEINFO
],
9163 dprintk("--> %s\n", __func__
);
9164 status
= nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
9165 if (res
.notification
& ~args
.notify_types
)
9166 dprintk("%s: unsupported notification\n", __func__
);
9167 if (res
.notification
!= args
.notify_types
)
9170 dprintk("<-- %s status=%d\n", __func__
, status
);
9175 int nfs4_proc_getdeviceinfo(struct nfs_server
*server
,
9176 struct pnfs_device
*pdev
,
9177 const struct cred
*cred
)
9179 struct nfs4_exception exception
= { };
9183 err
= nfs4_handle_exception(server
,
9184 _nfs4_proc_getdeviceinfo(server
, pdev
, cred
),
9186 } while (exception
.retry
);
9189 EXPORT_SYMBOL_GPL(nfs4_proc_getdeviceinfo
);
9191 static void nfs4_layoutcommit_prepare(struct rpc_task
*task
, void *calldata
)
9193 struct nfs4_layoutcommit_data
*data
= calldata
;
9194 struct nfs_server
*server
= NFS_SERVER(data
->args
.inode
);
9196 nfs4_setup_sequence(server
->nfs_client
,
9197 &data
->args
.seq_args
,
9203 nfs4_layoutcommit_done(struct rpc_task
*task
, void *calldata
)
9205 struct nfs4_layoutcommit_data
*data
= calldata
;
9206 struct nfs_server
*server
= NFS_SERVER(data
->args
.inode
);
9208 if (!nfs41_sequence_done(task
, &data
->res
.seq_res
))
9211 switch (task
->tk_status
) { /* Just ignore these failures */
9212 case -NFS4ERR_DELEG_REVOKED
: /* layout was recalled */
9213 case -NFS4ERR_BADIOMODE
: /* no IOMODE_RW layout for range */
9214 case -NFS4ERR_BADLAYOUT
: /* no layout */
9215 case -NFS4ERR_GRACE
: /* loca_recalim always false */
9216 task
->tk_status
= 0;
9220 if (nfs4_async_handle_error(task
, server
, NULL
, NULL
) == -EAGAIN
) {
9221 rpc_restart_call_prepare(task
);
9227 static void nfs4_layoutcommit_release(void *calldata
)
9229 struct nfs4_layoutcommit_data
*data
= calldata
;
9231 pnfs_cleanup_layoutcommit(data
);
9232 nfs_post_op_update_inode_force_wcc(data
->args
.inode
,
9234 put_cred(data
->cred
);
9235 nfs_iput_and_deactive(data
->inode
);
9239 static const struct rpc_call_ops nfs4_layoutcommit_ops
= {
9240 .rpc_call_prepare
= nfs4_layoutcommit_prepare
,
9241 .rpc_call_done
= nfs4_layoutcommit_done
,
9242 .rpc_release
= nfs4_layoutcommit_release
,
9246 nfs4_proc_layoutcommit(struct nfs4_layoutcommit_data
*data
, bool sync
)
9248 struct rpc_message msg
= {
9249 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LAYOUTCOMMIT
],
9250 .rpc_argp
= &data
->args
,
9251 .rpc_resp
= &data
->res
,
9252 .rpc_cred
= data
->cred
,
9254 struct rpc_task_setup task_setup_data
= {
9255 .task
= &data
->task
,
9256 .rpc_client
= NFS_CLIENT(data
->args
.inode
),
9257 .rpc_message
= &msg
,
9258 .callback_ops
= &nfs4_layoutcommit_ops
,
9259 .callback_data
= data
,
9261 struct rpc_task
*task
;
9264 dprintk("NFS: initiating layoutcommit call. sync %d "
9265 "lbw: %llu inode %lu\n", sync
,
9266 data
->args
.lastbytewritten
,
9267 data
->args
.inode
->i_ino
);
9270 data
->inode
= nfs_igrab_and_active(data
->args
.inode
);
9271 if (data
->inode
== NULL
) {
9272 nfs4_layoutcommit_release(data
);
9275 task_setup_data
.flags
= RPC_TASK_ASYNC
;
9277 nfs4_init_sequence(&data
->args
.seq_args
, &data
->res
.seq_res
, 1, 0);
9278 task
= rpc_run_task(&task_setup_data
);
9280 return PTR_ERR(task
);
9282 status
= task
->tk_status
;
9283 trace_nfs4_layoutcommit(data
->args
.inode
, &data
->args
.stateid
, status
);
9284 dprintk("%s: status %d\n", __func__
, status
);
9290 * Use the state managment nfs_client cl_rpcclient, which uses krb5i (if
9291 * possible) as per RFC3530bis and RFC5661 Security Considerations sections
9294 _nfs41_proc_secinfo_no_name(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
9295 struct nfs_fsinfo
*info
,
9296 struct nfs4_secinfo_flavors
*flavors
, bool use_integrity
)
9298 struct nfs41_secinfo_no_name_args args
= {
9299 .style
= SECINFO_STYLE_CURRENT_FH
,
9301 struct nfs4_secinfo_res res
= {
9304 struct rpc_message msg
= {
9305 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SECINFO_NO_NAME
],
9309 struct rpc_clnt
*clnt
= server
->client
;
9310 const struct cred
*cred
= NULL
;
9313 if (use_integrity
) {
9314 clnt
= server
->nfs_client
->cl_rpcclient
;
9315 cred
= nfs4_get_clid_cred(server
->nfs_client
);
9316 msg
.rpc_cred
= cred
;
9319 dprintk("--> %s\n", __func__
);
9320 status
= nfs4_call_sync(clnt
, server
, &msg
, &args
.seq_args
,
9322 dprintk("<-- %s status=%d\n", __func__
, status
);
9330 nfs41_proc_secinfo_no_name(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
9331 struct nfs_fsinfo
*info
, struct nfs4_secinfo_flavors
*flavors
)
9333 struct nfs4_exception exception
= {
9334 .interruptible
= true,
9338 /* first try using integrity protection */
9339 err
= -NFS4ERR_WRONGSEC
;
9341 /* try to use integrity protection with machine cred */
9342 if (_nfs4_is_integrity_protected(server
->nfs_client
))
9343 err
= _nfs41_proc_secinfo_no_name(server
, fhandle
, info
,
9347 * if unable to use integrity protection, or SECINFO with
9348 * integrity protection returns NFS4ERR_WRONGSEC (which is
9349 * disallowed by spec, but exists in deployed servers) use
9350 * the current filesystem's rpc_client and the user cred.
9352 if (err
== -NFS4ERR_WRONGSEC
)
9353 err
= _nfs41_proc_secinfo_no_name(server
, fhandle
, info
,
9358 case -NFS4ERR_WRONGSEC
:
9362 err
= nfs4_handle_exception(server
, err
, &exception
);
9364 } while (exception
.retry
);
9370 nfs41_find_root_sec(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
9371 struct nfs_fsinfo
*info
)
9375 rpc_authflavor_t flavor
= RPC_AUTH_MAXFLAVOR
;
9376 struct nfs4_secinfo_flavors
*flavors
;
9377 struct nfs4_secinfo4
*secinfo
;
9380 page
= alloc_page(GFP_KERNEL
);
9386 flavors
= page_address(page
);
9387 err
= nfs41_proc_secinfo_no_name(server
, fhandle
, info
, flavors
);
9390 * Fall back on "guess and check" method if
9391 * the server doesn't support SECINFO_NO_NAME
9393 if (err
== -NFS4ERR_WRONGSEC
|| err
== -ENOTSUPP
) {
9394 err
= nfs4_find_root_sec(server
, fhandle
, info
);
9400 for (i
= 0; i
< flavors
->num_flavors
; i
++) {
9401 secinfo
= &flavors
->flavors
[i
];
9403 switch (secinfo
->flavor
) {
9407 flavor
= rpcauth_get_pseudoflavor(secinfo
->flavor
,
9408 &secinfo
->flavor_info
);
9411 flavor
= RPC_AUTH_MAXFLAVOR
;
9415 if (!nfs_auth_info_match(&server
->auth_info
, flavor
))
9416 flavor
= RPC_AUTH_MAXFLAVOR
;
9418 if (flavor
!= RPC_AUTH_MAXFLAVOR
) {
9419 err
= nfs4_lookup_root_sec(server
, fhandle
,
9426 if (flavor
== RPC_AUTH_MAXFLAVOR
)
9437 static int _nfs41_test_stateid(struct nfs_server
*server
,
9438 nfs4_stateid
*stateid
,
9439 const struct cred
*cred
)
9442 struct nfs41_test_stateid_args args
= {
9445 struct nfs41_test_stateid_res res
;
9446 struct rpc_message msg
= {
9447 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_TEST_STATEID
],
9452 struct rpc_clnt
*rpc_client
= server
->client
;
9454 nfs4_state_protect(server
->nfs_client
, NFS_SP4_MACH_CRED_STATEID
,
9457 dprintk("NFS call test_stateid %p\n", stateid
);
9458 nfs4_init_sequence(&args
.seq_args
, &res
.seq_res
, 0, 1);
9459 status
= nfs4_call_sync_sequence(rpc_client
, server
, &msg
,
9460 &args
.seq_args
, &res
.seq_res
);
9461 if (status
!= NFS_OK
) {
9462 dprintk("NFS reply test_stateid: failed, %d\n", status
);
9465 dprintk("NFS reply test_stateid: succeeded, %d\n", -res
.status
);
9469 static void nfs4_handle_delay_or_session_error(struct nfs_server
*server
,
9470 int err
, struct nfs4_exception
*exception
)
9472 exception
->retry
= 0;
9474 case -NFS4ERR_DELAY
:
9475 case -NFS4ERR_RETRY_UNCACHED_REP
:
9476 nfs4_handle_exception(server
, err
, exception
);
9478 case -NFS4ERR_BADSESSION
:
9479 case -NFS4ERR_BADSLOT
:
9480 case -NFS4ERR_BAD_HIGH_SLOT
:
9481 case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION
:
9482 case -NFS4ERR_DEADSESSION
:
9483 nfs4_do_handle_exception(server
, err
, exception
);
9488 * nfs41_test_stateid - perform a TEST_STATEID operation
9490 * @server: server / transport on which to perform the operation
9491 * @stateid: state ID to test
9494 * Returns NFS_OK if the server recognizes that "stateid" is valid.
9495 * Otherwise a negative NFS4ERR value is returned if the operation
9496 * failed or the state ID is not currently valid.
9498 static int nfs41_test_stateid(struct nfs_server
*server
,
9499 nfs4_stateid
*stateid
,
9500 const struct cred
*cred
)
9502 struct nfs4_exception exception
= {
9503 .interruptible
= true,
9507 err
= _nfs41_test_stateid(server
, stateid
, cred
);
9508 nfs4_handle_delay_or_session_error(server
, err
, &exception
);
9509 } while (exception
.retry
);
9513 struct nfs_free_stateid_data
{
9514 struct nfs_server
*server
;
9515 struct nfs41_free_stateid_args args
;
9516 struct nfs41_free_stateid_res res
;
9519 static void nfs41_free_stateid_prepare(struct rpc_task
*task
, void *calldata
)
9521 struct nfs_free_stateid_data
*data
= calldata
;
9522 nfs4_setup_sequence(data
->server
->nfs_client
,
9523 &data
->args
.seq_args
,
9528 static void nfs41_free_stateid_done(struct rpc_task
*task
, void *calldata
)
9530 struct nfs_free_stateid_data
*data
= calldata
;
9532 nfs41_sequence_done(task
, &data
->res
.seq_res
);
9534 switch (task
->tk_status
) {
9535 case -NFS4ERR_DELAY
:
9536 if (nfs4_async_handle_error(task
, data
->server
, NULL
, NULL
) == -EAGAIN
)
9537 rpc_restart_call_prepare(task
);
9541 static void nfs41_free_stateid_release(void *calldata
)
9546 static const struct rpc_call_ops nfs41_free_stateid_ops
= {
9547 .rpc_call_prepare
= nfs41_free_stateid_prepare
,
9548 .rpc_call_done
= nfs41_free_stateid_done
,
9549 .rpc_release
= nfs41_free_stateid_release
,
9553 * nfs41_free_stateid - perform a FREE_STATEID operation
9555 * @server: server / transport on which to perform the operation
9556 * @stateid: state ID to release
9558 * @privileged: set to true if this call needs to be privileged
9560 * Note: this function is always asynchronous.
9562 static int nfs41_free_stateid(struct nfs_server
*server
,
9563 const nfs4_stateid
*stateid
,
9564 const struct cred
*cred
,
9567 struct rpc_message msg
= {
9568 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_FREE_STATEID
],
9571 struct rpc_task_setup task_setup
= {
9572 .rpc_client
= server
->client
,
9573 .rpc_message
= &msg
,
9574 .callback_ops
= &nfs41_free_stateid_ops
,
9575 .flags
= RPC_TASK_ASYNC
,
9577 struct nfs_free_stateid_data
*data
;
9578 struct rpc_task
*task
;
9580 nfs4_state_protect(server
->nfs_client
, NFS_SP4_MACH_CRED_STATEID
,
9581 &task_setup
.rpc_client
, &msg
);
9583 dprintk("NFS call free_stateid %p\n", stateid
);
9584 data
= kmalloc(sizeof(*data
), GFP_NOFS
);
9587 data
->server
= server
;
9588 nfs4_stateid_copy(&data
->args
.stateid
, stateid
);
9590 task_setup
.callback_data
= data
;
9592 msg
.rpc_argp
= &data
->args
;
9593 msg
.rpc_resp
= &data
->res
;
9594 nfs4_init_sequence(&data
->args
.seq_args
, &data
->res
.seq_res
, 1, privileged
);
9595 task
= rpc_run_task(&task_setup
);
9597 return PTR_ERR(task
);
9603 nfs41_free_lock_state(struct nfs_server
*server
, struct nfs4_lock_state
*lsp
)
9605 const struct cred
*cred
= lsp
->ls_state
->owner
->so_cred
;
9607 nfs41_free_stateid(server
, &lsp
->ls_stateid
, cred
, false);
9608 nfs4_free_lock_state(server
, lsp
);
9611 static bool nfs41_match_stateid(const nfs4_stateid
*s1
,
9612 const nfs4_stateid
*s2
)
9614 if (s1
->type
!= s2
->type
)
9617 if (memcmp(s1
->other
, s2
->other
, sizeof(s1
->other
)) != 0)
9620 if (s1
->seqid
== s2
->seqid
)
9623 return s1
->seqid
== 0 || s2
->seqid
== 0;
9626 #endif /* CONFIG_NFS_V4_1 */
9628 static bool nfs4_match_stateid(const nfs4_stateid
*s1
,
9629 const nfs4_stateid
*s2
)
9631 return nfs4_stateid_match(s1
, s2
);
9635 static const struct nfs4_state_recovery_ops nfs40_reboot_recovery_ops
= {
9636 .owner_flag_bit
= NFS_OWNER_RECLAIM_REBOOT
,
9637 .state_flag_bit
= NFS_STATE_RECLAIM_REBOOT
,
9638 .recover_open
= nfs4_open_reclaim
,
9639 .recover_lock
= nfs4_lock_reclaim
,
9640 .establish_clid
= nfs4_init_clientid
,
9641 .detect_trunking
= nfs40_discover_server_trunking
,
9644 #if defined(CONFIG_NFS_V4_1)
9645 static const struct nfs4_state_recovery_ops nfs41_reboot_recovery_ops
= {
9646 .owner_flag_bit
= NFS_OWNER_RECLAIM_REBOOT
,
9647 .state_flag_bit
= NFS_STATE_RECLAIM_REBOOT
,
9648 .recover_open
= nfs4_open_reclaim
,
9649 .recover_lock
= nfs4_lock_reclaim
,
9650 .establish_clid
= nfs41_init_clientid
,
9651 .reclaim_complete
= nfs41_proc_reclaim_complete
,
9652 .detect_trunking
= nfs41_discover_server_trunking
,
9654 #endif /* CONFIG_NFS_V4_1 */
9656 static const struct nfs4_state_recovery_ops nfs40_nograce_recovery_ops
= {
9657 .owner_flag_bit
= NFS_OWNER_RECLAIM_NOGRACE
,
9658 .state_flag_bit
= NFS_STATE_RECLAIM_NOGRACE
,
9659 .recover_open
= nfs40_open_expired
,
9660 .recover_lock
= nfs4_lock_expired
,
9661 .establish_clid
= nfs4_init_clientid
,
9664 #if defined(CONFIG_NFS_V4_1)
9665 static const struct nfs4_state_recovery_ops nfs41_nograce_recovery_ops
= {
9666 .owner_flag_bit
= NFS_OWNER_RECLAIM_NOGRACE
,
9667 .state_flag_bit
= NFS_STATE_RECLAIM_NOGRACE
,
9668 .recover_open
= nfs41_open_expired
,
9669 .recover_lock
= nfs41_lock_expired
,
9670 .establish_clid
= nfs41_init_clientid
,
9672 #endif /* CONFIG_NFS_V4_1 */
9674 static const struct nfs4_state_maintenance_ops nfs40_state_renewal_ops
= {
9675 .sched_state_renewal
= nfs4_proc_async_renew
,
9676 .get_state_renewal_cred
= nfs4_get_renew_cred
,
9677 .renew_lease
= nfs4_proc_renew
,
9680 #if defined(CONFIG_NFS_V4_1)
9681 static const struct nfs4_state_maintenance_ops nfs41_state_renewal_ops
= {
9682 .sched_state_renewal
= nfs41_proc_async_sequence
,
9683 .get_state_renewal_cred
= nfs4_get_machine_cred
,
9684 .renew_lease
= nfs4_proc_sequence
,
9688 static const struct nfs4_mig_recovery_ops nfs40_mig_recovery_ops
= {
9689 .get_locations
= _nfs40_proc_get_locations
,
9690 .fsid_present
= _nfs40_proc_fsid_present
,
9693 #if defined(CONFIG_NFS_V4_1)
9694 static const struct nfs4_mig_recovery_ops nfs41_mig_recovery_ops
= {
9695 .get_locations
= _nfs41_proc_get_locations
,
9696 .fsid_present
= _nfs41_proc_fsid_present
,
9698 #endif /* CONFIG_NFS_V4_1 */
9700 static const struct nfs4_minor_version_ops nfs_v4_0_minor_ops
= {
9702 .init_caps
= NFS_CAP_READDIRPLUS
9703 | NFS_CAP_ATOMIC_OPEN
9704 | NFS_CAP_POSIX_LOCK
,
9705 .init_client
= nfs40_init_client
,
9706 .shutdown_client
= nfs40_shutdown_client
,
9707 .match_stateid
= nfs4_match_stateid
,
9708 .find_root_sec
= nfs4_find_root_sec
,
9709 .free_lock_state
= nfs4_release_lockowner
,
9710 .test_and_free_expired
= nfs40_test_and_free_expired_stateid
,
9711 .alloc_seqid
= nfs_alloc_seqid
,
9712 .call_sync_ops
= &nfs40_call_sync_ops
,
9713 .reboot_recovery_ops
= &nfs40_reboot_recovery_ops
,
9714 .nograce_recovery_ops
= &nfs40_nograce_recovery_ops
,
9715 .state_renewal_ops
= &nfs40_state_renewal_ops
,
9716 .mig_recovery_ops
= &nfs40_mig_recovery_ops
,
9719 #if defined(CONFIG_NFS_V4_1)
9720 static struct nfs_seqid
*
9721 nfs_alloc_no_seqid(struct nfs_seqid_counter
*arg1
, gfp_t arg2
)
9726 static const struct nfs4_minor_version_ops nfs_v4_1_minor_ops
= {
9728 .init_caps
= NFS_CAP_READDIRPLUS
9729 | NFS_CAP_ATOMIC_OPEN
9730 | NFS_CAP_POSIX_LOCK
9731 | NFS_CAP_STATEID_NFSV41
9732 | NFS_CAP_ATOMIC_OPEN_V1
9734 .init_client
= nfs41_init_client
,
9735 .shutdown_client
= nfs41_shutdown_client
,
9736 .match_stateid
= nfs41_match_stateid
,
9737 .find_root_sec
= nfs41_find_root_sec
,
9738 .free_lock_state
= nfs41_free_lock_state
,
9739 .test_and_free_expired
= nfs41_test_and_free_expired_stateid
,
9740 .alloc_seqid
= nfs_alloc_no_seqid
,
9741 .session_trunk
= nfs4_test_session_trunk
,
9742 .call_sync_ops
= &nfs41_call_sync_ops
,
9743 .reboot_recovery_ops
= &nfs41_reboot_recovery_ops
,
9744 .nograce_recovery_ops
= &nfs41_nograce_recovery_ops
,
9745 .state_renewal_ops
= &nfs41_state_renewal_ops
,
9746 .mig_recovery_ops
= &nfs41_mig_recovery_ops
,
9750 #if defined(CONFIG_NFS_V4_2)
9751 static const struct nfs4_minor_version_ops nfs_v4_2_minor_ops
= {
9753 .init_caps
= NFS_CAP_READDIRPLUS
9754 | NFS_CAP_ATOMIC_OPEN
9755 | NFS_CAP_POSIX_LOCK
9756 | NFS_CAP_STATEID_NFSV41
9757 | NFS_CAP_ATOMIC_OPEN_V1
9761 | NFS_CAP_OFFLOAD_CANCEL
9762 | NFS_CAP_DEALLOCATE
9764 | NFS_CAP_LAYOUTSTATS
9766 | NFS_CAP_LAYOUTERROR
,
9767 .init_client
= nfs41_init_client
,
9768 .shutdown_client
= nfs41_shutdown_client
,
9769 .match_stateid
= nfs41_match_stateid
,
9770 .find_root_sec
= nfs41_find_root_sec
,
9771 .free_lock_state
= nfs41_free_lock_state
,
9772 .call_sync_ops
= &nfs41_call_sync_ops
,
9773 .test_and_free_expired
= nfs41_test_and_free_expired_stateid
,
9774 .alloc_seqid
= nfs_alloc_no_seqid
,
9775 .session_trunk
= nfs4_test_session_trunk
,
9776 .reboot_recovery_ops
= &nfs41_reboot_recovery_ops
,
9777 .nograce_recovery_ops
= &nfs41_nograce_recovery_ops
,
9778 .state_renewal_ops
= &nfs41_state_renewal_ops
,
9779 .mig_recovery_ops
= &nfs41_mig_recovery_ops
,
9783 const struct nfs4_minor_version_ops
*nfs_v4_minor_ops
[] = {
9784 [0] = &nfs_v4_0_minor_ops
,
9785 #if defined(CONFIG_NFS_V4_1)
9786 [1] = &nfs_v4_1_minor_ops
,
9788 #if defined(CONFIG_NFS_V4_2)
9789 [2] = &nfs_v4_2_minor_ops
,
9793 static ssize_t
nfs4_listxattr(struct dentry
*dentry
, char *list
, size_t size
)
9795 ssize_t error
, error2
;
9797 error
= generic_listxattr(dentry
, list
, size
);
9805 error2
= nfs4_listxattr_nfs4_label(d_inode(dentry
), list
, size
);
9808 return error
+ error2
;
9811 static const struct inode_operations nfs4_dir_inode_operations
= {
9812 .create
= nfs_create
,
9813 .lookup
= nfs_lookup
,
9814 .atomic_open
= nfs_atomic_open
,
9816 .unlink
= nfs_unlink
,
9817 .symlink
= nfs_symlink
,
9821 .rename
= nfs_rename
,
9822 .permission
= nfs_permission
,
9823 .getattr
= nfs_getattr
,
9824 .setattr
= nfs_setattr
,
9825 .listxattr
= nfs4_listxattr
,
9828 static const struct inode_operations nfs4_file_inode_operations
= {
9829 .permission
= nfs_permission
,
9830 .getattr
= nfs_getattr
,
9831 .setattr
= nfs_setattr
,
9832 .listxattr
= nfs4_listxattr
,
9835 const struct nfs_rpc_ops nfs_v4_clientops
= {
9836 .version
= 4, /* protocol version */
9837 .dentry_ops
= &nfs4_dentry_operations
,
9838 .dir_inode_ops
= &nfs4_dir_inode_operations
,
9839 .file_inode_ops
= &nfs4_file_inode_operations
,
9840 .file_ops
= &nfs4_file_operations
,
9841 .getroot
= nfs4_proc_get_root
,
9842 .submount
= nfs4_submount
,
9843 .try_mount
= nfs4_try_mount
,
9844 .getattr
= nfs4_proc_getattr
,
9845 .setattr
= nfs4_proc_setattr
,
9846 .lookup
= nfs4_proc_lookup
,
9847 .lookupp
= nfs4_proc_lookupp
,
9848 .access
= nfs4_proc_access
,
9849 .readlink
= nfs4_proc_readlink
,
9850 .create
= nfs4_proc_create
,
9851 .remove
= nfs4_proc_remove
,
9852 .unlink_setup
= nfs4_proc_unlink_setup
,
9853 .unlink_rpc_prepare
= nfs4_proc_unlink_rpc_prepare
,
9854 .unlink_done
= nfs4_proc_unlink_done
,
9855 .rename_setup
= nfs4_proc_rename_setup
,
9856 .rename_rpc_prepare
= nfs4_proc_rename_rpc_prepare
,
9857 .rename_done
= nfs4_proc_rename_done
,
9858 .link
= nfs4_proc_link
,
9859 .symlink
= nfs4_proc_symlink
,
9860 .mkdir
= nfs4_proc_mkdir
,
9861 .rmdir
= nfs4_proc_rmdir
,
9862 .readdir
= nfs4_proc_readdir
,
9863 .mknod
= nfs4_proc_mknod
,
9864 .statfs
= nfs4_proc_statfs
,
9865 .fsinfo
= nfs4_proc_fsinfo
,
9866 .pathconf
= nfs4_proc_pathconf
,
9867 .set_capabilities
= nfs4_server_capabilities
,
9868 .decode_dirent
= nfs4_decode_dirent
,
9869 .pgio_rpc_prepare
= nfs4_proc_pgio_rpc_prepare
,
9870 .read_setup
= nfs4_proc_read_setup
,
9871 .read_done
= nfs4_read_done
,
9872 .write_setup
= nfs4_proc_write_setup
,
9873 .write_done
= nfs4_write_done
,
9874 .commit_setup
= nfs4_proc_commit_setup
,
9875 .commit_rpc_prepare
= nfs4_proc_commit_rpc_prepare
,
9876 .commit_done
= nfs4_commit_done
,
9877 .lock
= nfs4_proc_lock
,
9878 .clear_acl_cache
= nfs4_zap_acl_attr
,
9879 .close_context
= nfs4_close_context
,
9880 .open_context
= nfs4_atomic_open
,
9881 .have_delegation
= nfs4_have_delegation
,
9882 .alloc_client
= nfs4_alloc_client
,
9883 .init_client
= nfs4_init_client
,
9884 .free_client
= nfs4_free_client
,
9885 .create_server
= nfs4_create_server
,
9886 .clone_server
= nfs_clone_server
,
9889 static const struct xattr_handler nfs4_xattr_nfs4_acl_handler
= {
9890 .name
= XATTR_NAME_NFSV4_ACL
,
9891 .list
= nfs4_xattr_list_nfs4_acl
,
9892 .get
= nfs4_xattr_get_nfs4_acl
,
9893 .set
= nfs4_xattr_set_nfs4_acl
,
9896 const struct xattr_handler
*nfs4_xattr_handlers
[] = {
9897 &nfs4_xattr_nfs4_acl_handler
,
9898 #ifdef CONFIG_NFS_V4_SECURITY_LABEL
9899 &nfs4_xattr_nfs4_label_handler
,