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
.umask
= current_umask();
1260 p
->o_arg
.claim
= nfs4_map_atomic_open_claim(server
, claim
);
1261 p
->o_arg
.share_access
= nfs4_map_atomic_open_share(server
,
1263 /* don't put an ACCESS op in OPEN compound if O_EXCL, because ACCESS
1264 * will return permission denied for all bits until close */
1265 if (!(flags
& O_EXCL
)) {
1266 /* ask server to check for all possible rights as results
1268 switch (p
->o_arg
.claim
) {
1271 case NFS4_OPEN_CLAIM_NULL
:
1272 case NFS4_OPEN_CLAIM_FH
:
1273 p
->o_arg
.access
= NFS4_ACCESS_READ
|
1274 NFS4_ACCESS_MODIFY
|
1275 NFS4_ACCESS_EXTEND
|
1276 NFS4_ACCESS_EXECUTE
;
1279 p
->o_arg
.clientid
= server
->nfs_client
->cl_clientid
;
1280 p
->o_arg
.id
.create_time
= ktime_to_ns(sp
->so_seqid
.create_time
);
1281 p
->o_arg
.id
.uniquifier
= sp
->so_seqid
.owner_id
;
1282 p
->o_arg
.name
= &dentry
->d_name
;
1283 p
->o_arg
.server
= server
;
1284 p
->o_arg
.bitmask
= nfs4_bitmask(server
, label
);
1285 p
->o_arg
.open_bitmap
= &nfs4_fattr_bitmap
[0];
1286 p
->o_arg
.label
= nfs4_label_copy(p
->a_label
, label
);
1287 switch (p
->o_arg
.claim
) {
1288 case NFS4_OPEN_CLAIM_NULL
:
1289 case NFS4_OPEN_CLAIM_DELEGATE_CUR
:
1290 case NFS4_OPEN_CLAIM_DELEGATE_PREV
:
1291 p
->o_arg
.fh
= NFS_FH(dir
);
1293 case NFS4_OPEN_CLAIM_PREVIOUS
:
1294 case NFS4_OPEN_CLAIM_FH
:
1295 case NFS4_OPEN_CLAIM_DELEG_CUR_FH
:
1296 case NFS4_OPEN_CLAIM_DELEG_PREV_FH
:
1297 p
->o_arg
.fh
= NFS_FH(d_inode(dentry
));
1299 if (c
!= NULL
&& c
->sattr
!= NULL
&& c
->sattr
->ia_valid
!= 0) {
1300 p
->o_arg
.u
.attrs
= &p
->attrs
;
1301 memcpy(&p
->attrs
, c
->sattr
, sizeof(p
->attrs
));
1303 memcpy(p
->o_arg
.u
.verifier
.data
, c
->verf
,
1304 sizeof(p
->o_arg
.u
.verifier
.data
));
1306 p
->c_arg
.fh
= &p
->o_res
.fh
;
1307 p
->c_arg
.stateid
= &p
->o_res
.stateid
;
1308 p
->c_arg
.seqid
= p
->o_arg
.seqid
;
1309 nfs4_init_opendata_res(p
);
1310 kref_init(&p
->kref
);
1314 nfs4_label_free(p
->a_label
);
1316 nfs4_label_free(p
->f_label
);
1324 static void nfs4_opendata_free(struct kref
*kref
)
1326 struct nfs4_opendata
*p
= container_of(kref
,
1327 struct nfs4_opendata
, kref
);
1328 struct super_block
*sb
= p
->dentry
->d_sb
;
1330 nfs4_lgopen_release(p
->lgp
);
1331 nfs_free_seqid(p
->o_arg
.seqid
);
1332 nfs4_sequence_free_slot(&p
->o_res
.seq_res
);
1333 if (p
->state
!= NULL
)
1334 nfs4_put_open_state(p
->state
);
1335 nfs4_put_state_owner(p
->owner
);
1337 nfs4_label_free(p
->a_label
);
1338 nfs4_label_free(p
->f_label
);
1342 nfs_sb_deactive(sb
);
1343 nfs_fattr_free_names(&p
->f_attr
);
1344 kfree(p
->f_attr
.mdsthreshold
);
1348 static void nfs4_opendata_put(struct nfs4_opendata
*p
)
1351 kref_put(&p
->kref
, nfs4_opendata_free
);
1354 static bool nfs4_mode_match_open_stateid(struct nfs4_state
*state
,
1357 switch(fmode
& (FMODE_READ
|FMODE_WRITE
)) {
1358 case FMODE_READ
|FMODE_WRITE
:
1359 return state
->n_rdwr
!= 0;
1361 return state
->n_wronly
!= 0;
1363 return state
->n_rdonly
!= 0;
1369 static int can_open_cached(struct nfs4_state
*state
, fmode_t mode
,
1370 int open_mode
, enum open_claim_type4 claim
)
1374 if (open_mode
& (O_EXCL
|O_TRUNC
))
1377 case NFS4_OPEN_CLAIM_NULL
:
1378 case NFS4_OPEN_CLAIM_FH
:
1383 switch (mode
& (FMODE_READ
|FMODE_WRITE
)) {
1385 ret
|= test_bit(NFS_O_RDONLY_STATE
, &state
->flags
) != 0
1386 && state
->n_rdonly
!= 0;
1389 ret
|= test_bit(NFS_O_WRONLY_STATE
, &state
->flags
) != 0
1390 && state
->n_wronly
!= 0;
1392 case FMODE_READ
|FMODE_WRITE
:
1393 ret
|= test_bit(NFS_O_RDWR_STATE
, &state
->flags
) != 0
1394 && state
->n_rdwr
!= 0;
1400 static int can_open_delegated(struct nfs_delegation
*delegation
, fmode_t fmode
,
1401 enum open_claim_type4 claim
)
1403 if (delegation
== NULL
)
1405 if ((delegation
->type
& fmode
) != fmode
)
1407 if (test_bit(NFS_DELEGATION_RETURNING
, &delegation
->flags
))
1410 case NFS4_OPEN_CLAIM_NULL
:
1411 case NFS4_OPEN_CLAIM_FH
:
1413 case NFS4_OPEN_CLAIM_PREVIOUS
:
1414 if (!test_bit(NFS_DELEGATION_NEED_RECLAIM
, &delegation
->flags
))
1420 nfs_mark_delegation_referenced(delegation
);
1424 static void update_open_stateflags(struct nfs4_state
*state
, fmode_t fmode
)
1433 case FMODE_READ
|FMODE_WRITE
:
1436 nfs4_state_set_mode_locked(state
, state
->state
| fmode
);
1439 #ifdef CONFIG_NFS_V4_1
1440 static bool nfs_open_stateid_recover_openmode(struct nfs4_state
*state
)
1442 if (state
->n_rdonly
&& !test_bit(NFS_O_RDONLY_STATE
, &state
->flags
))
1444 if (state
->n_wronly
&& !test_bit(NFS_O_WRONLY_STATE
, &state
->flags
))
1446 if (state
->n_rdwr
&& !test_bit(NFS_O_RDWR_STATE
, &state
->flags
))
1450 #endif /* CONFIG_NFS_V4_1 */
1452 static void nfs_state_log_update_open_stateid(struct nfs4_state
*state
)
1454 if (test_and_clear_bit(NFS_STATE_CHANGE_WAIT
, &state
->flags
))
1455 wake_up_all(&state
->waitq
);
1458 static void nfs_state_log_out_of_order_open_stateid(struct nfs4_state
*state
,
1459 const nfs4_stateid
*stateid
)
1461 u32 state_seqid
= be32_to_cpu(state
->open_stateid
.seqid
);
1462 u32 stateid_seqid
= be32_to_cpu(stateid
->seqid
);
1464 if (stateid_seqid
== state_seqid
+ 1U ||
1465 (stateid_seqid
== 1U && state_seqid
== 0xffffffffU
))
1466 nfs_state_log_update_open_stateid(state
);
1468 set_bit(NFS_STATE_CHANGE_WAIT
, &state
->flags
);
1471 static void nfs_test_and_clear_all_open_stateid(struct nfs4_state
*state
)
1473 struct nfs_client
*clp
= state
->owner
->so_server
->nfs_client
;
1474 bool need_recover
= false;
1476 if (test_and_clear_bit(NFS_O_RDONLY_STATE
, &state
->flags
) && state
->n_rdonly
)
1477 need_recover
= true;
1478 if (test_and_clear_bit(NFS_O_WRONLY_STATE
, &state
->flags
) && state
->n_wronly
)
1479 need_recover
= true;
1480 if (test_and_clear_bit(NFS_O_RDWR_STATE
, &state
->flags
) && state
->n_rdwr
)
1481 need_recover
= true;
1483 nfs4_state_mark_reclaim_nograce(clp
, state
);
1487 * Check for whether or not the caller may update the open stateid
1488 * to the value passed in by stateid.
1490 * Note: This function relies heavily on the server implementing
1491 * RFC7530 Section 9.1.4.2, and RFC5661 Section 8.2.2
1493 * i.e. The stateid seqids have to be initialised to 1, and
1494 * are then incremented on every state transition.
1496 static bool nfs_need_update_open_stateid(struct nfs4_state
*state
,
1497 const nfs4_stateid
*stateid
)
1499 if (test_bit(NFS_OPEN_STATE
, &state
->flags
) == 0 ||
1500 !nfs4_stateid_match_other(stateid
, &state
->open_stateid
)) {
1501 if (stateid
->seqid
== cpu_to_be32(1))
1502 nfs_state_log_update_open_stateid(state
);
1504 set_bit(NFS_STATE_CHANGE_WAIT
, &state
->flags
);
1508 if (nfs4_stateid_is_newer(stateid
, &state
->open_stateid
)) {
1509 nfs_state_log_out_of_order_open_stateid(state
, stateid
);
1515 static void nfs_resync_open_stateid_locked(struct nfs4_state
*state
)
1517 if (!(state
->n_wronly
|| state
->n_rdonly
|| state
->n_rdwr
))
1519 if (state
->n_wronly
)
1520 set_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
1521 if (state
->n_rdonly
)
1522 set_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
1524 set_bit(NFS_O_RDWR_STATE
, &state
->flags
);
1525 set_bit(NFS_OPEN_STATE
, &state
->flags
);
1528 static void nfs_clear_open_stateid_locked(struct nfs4_state
*state
,
1529 nfs4_stateid
*stateid
, fmode_t fmode
)
1531 clear_bit(NFS_O_RDWR_STATE
, &state
->flags
);
1532 switch (fmode
& (FMODE_READ
|FMODE_WRITE
)) {
1534 clear_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
1537 clear_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
1540 clear_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
1541 clear_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
1542 clear_bit(NFS_OPEN_STATE
, &state
->flags
);
1544 if (stateid
== NULL
)
1546 /* Handle OPEN+OPEN_DOWNGRADE races */
1547 if (nfs4_stateid_match_other(stateid
, &state
->open_stateid
) &&
1548 !nfs4_stateid_is_newer(stateid
, &state
->open_stateid
)) {
1549 nfs_resync_open_stateid_locked(state
);
1552 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) == 0)
1553 nfs4_stateid_copy(&state
->stateid
, stateid
);
1554 nfs4_stateid_copy(&state
->open_stateid
, stateid
);
1555 trace_nfs4_open_stateid_update(state
->inode
, stateid
, 0);
1557 nfs_state_log_update_open_stateid(state
);
1560 static void nfs_clear_open_stateid(struct nfs4_state
*state
,
1561 nfs4_stateid
*arg_stateid
,
1562 nfs4_stateid
*stateid
, fmode_t fmode
)
1564 write_seqlock(&state
->seqlock
);
1565 /* Ignore, if the CLOSE argment doesn't match the current stateid */
1566 if (nfs4_state_match_open_stateid_other(state
, arg_stateid
))
1567 nfs_clear_open_stateid_locked(state
, stateid
, fmode
);
1568 write_sequnlock(&state
->seqlock
);
1569 if (test_bit(NFS_STATE_RECLAIM_NOGRACE
, &state
->flags
))
1570 nfs4_schedule_state_manager(state
->owner
->so_server
->nfs_client
);
1573 static void nfs_set_open_stateid_locked(struct nfs4_state
*state
,
1574 const nfs4_stateid
*stateid
, nfs4_stateid
*freeme
)
1575 __must_hold(&state
->owner
->so_lock
)
1576 __must_hold(&state
->seqlock
)
1584 if (!nfs_need_update_open_stateid(state
, stateid
))
1586 if (!test_bit(NFS_STATE_CHANGE_WAIT
, &state
->flags
))
1590 /* Rely on seqids for serialisation with NFSv4.0 */
1591 if (!nfs4_has_session(NFS_SERVER(state
->inode
)->nfs_client
))
1594 prepare_to_wait(&state
->waitq
, &wait
, TASK_KILLABLE
);
1596 * Ensure we process the state changes in the same order
1597 * in which the server processed them by delaying the
1598 * update of the stateid until we are in sequence.
1600 write_sequnlock(&state
->seqlock
);
1601 spin_unlock(&state
->owner
->so_lock
);
1603 trace_nfs4_open_stateid_update_wait(state
->inode
, stateid
, 0);
1604 if (!signal_pending(current
)) {
1605 if (schedule_timeout(5*HZ
) == 0)
1611 finish_wait(&state
->waitq
, &wait
);
1613 spin_lock(&state
->owner
->so_lock
);
1614 write_seqlock(&state
->seqlock
);
1617 if (test_bit(NFS_OPEN_STATE
, &state
->flags
) &&
1618 !nfs4_stateid_match_other(stateid
, &state
->open_stateid
)) {
1619 nfs4_stateid_copy(freeme
, &state
->open_stateid
);
1620 nfs_test_and_clear_all_open_stateid(state
);
1623 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) == 0)
1624 nfs4_stateid_copy(&state
->stateid
, stateid
);
1625 nfs4_stateid_copy(&state
->open_stateid
, stateid
);
1626 trace_nfs4_open_stateid_update(state
->inode
, stateid
, status
);
1627 nfs_state_log_update_open_stateid(state
);
1630 static void nfs_state_set_open_stateid(struct nfs4_state
*state
,
1631 const nfs4_stateid
*open_stateid
,
1633 nfs4_stateid
*freeme
)
1636 * Protect the call to nfs4_state_set_mode_locked and
1637 * serialise the stateid update
1639 write_seqlock(&state
->seqlock
);
1640 nfs_set_open_stateid_locked(state
, open_stateid
, freeme
);
1643 set_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
1646 set_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
1648 case FMODE_READ
|FMODE_WRITE
:
1649 set_bit(NFS_O_RDWR_STATE
, &state
->flags
);
1651 set_bit(NFS_OPEN_STATE
, &state
->flags
);
1652 write_sequnlock(&state
->seqlock
);
1655 static void nfs_state_set_delegation(struct nfs4_state
*state
,
1656 const nfs4_stateid
*deleg_stateid
,
1660 * Protect the call to nfs4_state_set_mode_locked and
1661 * serialise the stateid update
1663 write_seqlock(&state
->seqlock
);
1664 nfs4_stateid_copy(&state
->stateid
, deleg_stateid
);
1665 set_bit(NFS_DELEGATED_STATE
, &state
->flags
);
1666 write_sequnlock(&state
->seqlock
);
1669 static void nfs_state_clear_delegation(struct nfs4_state
*state
)
1671 write_seqlock(&state
->seqlock
);
1672 nfs4_stateid_copy(&state
->stateid
, &state
->open_stateid
);
1673 clear_bit(NFS_DELEGATED_STATE
, &state
->flags
);
1674 write_sequnlock(&state
->seqlock
);
1677 static int update_open_stateid(struct nfs4_state
*state
,
1678 const nfs4_stateid
*open_stateid
,
1679 const nfs4_stateid
*delegation
,
1682 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
1683 struct nfs_client
*clp
= server
->nfs_client
;
1684 struct nfs_inode
*nfsi
= NFS_I(state
->inode
);
1685 struct nfs_delegation
*deleg_cur
;
1686 nfs4_stateid freeme
= { };
1689 fmode
&= (FMODE_READ
|FMODE_WRITE
);
1692 spin_lock(&state
->owner
->so_lock
);
1693 if (open_stateid
!= NULL
) {
1694 nfs_state_set_open_stateid(state
, open_stateid
, fmode
, &freeme
);
1698 deleg_cur
= rcu_dereference(nfsi
->delegation
);
1699 if (deleg_cur
== NULL
)
1702 spin_lock(&deleg_cur
->lock
);
1703 if (rcu_dereference(nfsi
->delegation
) != deleg_cur
||
1704 test_bit(NFS_DELEGATION_RETURNING
, &deleg_cur
->flags
) ||
1705 (deleg_cur
->type
& fmode
) != fmode
)
1706 goto no_delegation_unlock
;
1708 if (delegation
== NULL
)
1709 delegation
= &deleg_cur
->stateid
;
1710 else if (!nfs4_stateid_match(&deleg_cur
->stateid
, delegation
))
1711 goto no_delegation_unlock
;
1713 nfs_mark_delegation_referenced(deleg_cur
);
1714 nfs_state_set_delegation(state
, &deleg_cur
->stateid
, fmode
);
1716 no_delegation_unlock
:
1717 spin_unlock(&deleg_cur
->lock
);
1720 update_open_stateflags(state
, fmode
);
1721 spin_unlock(&state
->owner
->so_lock
);
1724 if (test_bit(NFS_STATE_RECLAIM_NOGRACE
, &state
->flags
))
1725 nfs4_schedule_state_manager(clp
);
1726 if (freeme
.type
!= 0)
1727 nfs4_test_and_free_stateid(server
, &freeme
,
1728 state
->owner
->so_cred
);
1733 static bool nfs4_update_lock_stateid(struct nfs4_lock_state
*lsp
,
1734 const nfs4_stateid
*stateid
)
1736 struct nfs4_state
*state
= lsp
->ls_state
;
1739 spin_lock(&state
->state_lock
);
1740 if (!nfs4_stateid_match_other(stateid
, &lsp
->ls_stateid
))
1742 if (!nfs4_stateid_is_newer(stateid
, &lsp
->ls_stateid
))
1744 nfs4_stateid_copy(&lsp
->ls_stateid
, stateid
);
1747 spin_unlock(&state
->state_lock
);
1751 static void nfs4_return_incompatible_delegation(struct inode
*inode
, fmode_t fmode
)
1753 struct nfs_delegation
*delegation
;
1755 fmode
&= FMODE_READ
|FMODE_WRITE
;
1757 delegation
= rcu_dereference(NFS_I(inode
)->delegation
);
1758 if (delegation
== NULL
|| (delegation
->type
& fmode
) == fmode
) {
1763 nfs4_inode_return_delegation(inode
);
1766 static struct nfs4_state
*nfs4_try_open_cached(struct nfs4_opendata
*opendata
)
1768 struct nfs4_state
*state
= opendata
->state
;
1769 struct nfs_inode
*nfsi
= NFS_I(state
->inode
);
1770 struct nfs_delegation
*delegation
;
1771 int open_mode
= opendata
->o_arg
.open_flags
;
1772 fmode_t fmode
= opendata
->o_arg
.fmode
;
1773 enum open_claim_type4 claim
= opendata
->o_arg
.claim
;
1774 nfs4_stateid stateid
;
1778 spin_lock(&state
->owner
->so_lock
);
1779 if (can_open_cached(state
, fmode
, open_mode
, claim
)) {
1780 update_open_stateflags(state
, fmode
);
1781 spin_unlock(&state
->owner
->so_lock
);
1782 goto out_return_state
;
1784 spin_unlock(&state
->owner
->so_lock
);
1786 delegation
= rcu_dereference(nfsi
->delegation
);
1787 if (!can_open_delegated(delegation
, fmode
, claim
)) {
1791 /* Save the delegation */
1792 nfs4_stateid_copy(&stateid
, &delegation
->stateid
);
1794 nfs_release_seqid(opendata
->o_arg
.seqid
);
1795 if (!opendata
->is_recover
) {
1796 ret
= nfs_may_open(state
->inode
, state
->owner
->so_cred
, open_mode
);
1802 /* Try to update the stateid using the delegation */
1803 if (update_open_stateid(state
, NULL
, &stateid
, fmode
))
1804 goto out_return_state
;
1807 return ERR_PTR(ret
);
1809 refcount_inc(&state
->count
);
1814 nfs4_opendata_check_deleg(struct nfs4_opendata
*data
, struct nfs4_state
*state
)
1816 struct nfs_client
*clp
= NFS_SERVER(state
->inode
)->nfs_client
;
1817 struct nfs_delegation
*delegation
;
1818 int delegation_flags
= 0;
1821 delegation
= rcu_dereference(NFS_I(state
->inode
)->delegation
);
1823 delegation_flags
= delegation
->flags
;
1825 switch (data
->o_arg
.claim
) {
1828 case NFS4_OPEN_CLAIM_DELEGATE_CUR
:
1829 case NFS4_OPEN_CLAIM_DELEG_CUR_FH
:
1830 pr_err_ratelimited("NFS: Broken NFSv4 server %s is "
1831 "returning a delegation for "
1832 "OPEN(CLAIM_DELEGATE_CUR)\n",
1836 if ((delegation_flags
& 1UL<<NFS_DELEGATION_NEED_RECLAIM
) == 0)
1837 nfs_inode_set_delegation(state
->inode
,
1838 data
->owner
->so_cred
,
1839 data
->o_res
.delegation_type
,
1840 &data
->o_res
.delegation
,
1841 data
->o_res
.pagemod_limit
);
1843 nfs_inode_reclaim_delegation(state
->inode
,
1844 data
->owner
->so_cred
,
1845 data
->o_res
.delegation_type
,
1846 &data
->o_res
.delegation
,
1847 data
->o_res
.pagemod_limit
);
1849 if (data
->o_res
.do_recall
)
1850 nfs_async_inode_return_delegation(state
->inode
,
1851 &data
->o_res
.delegation
);
1855 * Check the inode attributes against the CLAIM_PREVIOUS returned attributes
1856 * and update the nfs4_state.
1858 static struct nfs4_state
*
1859 _nfs4_opendata_reclaim_to_nfs4_state(struct nfs4_opendata
*data
)
1861 struct inode
*inode
= data
->state
->inode
;
1862 struct nfs4_state
*state
= data
->state
;
1865 if (!data
->rpc_done
) {
1866 if (data
->rpc_status
)
1867 return ERR_PTR(data
->rpc_status
);
1868 /* cached opens have already been processed */
1872 ret
= nfs_refresh_inode(inode
, &data
->f_attr
);
1874 return ERR_PTR(ret
);
1876 if (data
->o_res
.delegation_type
!= 0)
1877 nfs4_opendata_check_deleg(data
, state
);
1879 update_open_stateid(state
, &data
->o_res
.stateid
, NULL
,
1881 refcount_inc(&state
->count
);
1886 static struct inode
*
1887 nfs4_opendata_get_inode(struct nfs4_opendata
*data
)
1889 struct inode
*inode
;
1891 switch (data
->o_arg
.claim
) {
1892 case NFS4_OPEN_CLAIM_NULL
:
1893 case NFS4_OPEN_CLAIM_DELEGATE_CUR
:
1894 case NFS4_OPEN_CLAIM_DELEGATE_PREV
:
1895 if (!(data
->f_attr
.valid
& NFS_ATTR_FATTR
))
1896 return ERR_PTR(-EAGAIN
);
1897 inode
= nfs_fhget(data
->dir
->d_sb
, &data
->o_res
.fh
,
1898 &data
->f_attr
, data
->f_label
);
1901 inode
= d_inode(data
->dentry
);
1903 nfs_refresh_inode(inode
, &data
->f_attr
);
1908 static struct nfs4_state
*
1909 nfs4_opendata_find_nfs4_state(struct nfs4_opendata
*data
)
1911 struct nfs4_state
*state
;
1912 struct inode
*inode
;
1914 inode
= nfs4_opendata_get_inode(data
);
1916 return ERR_CAST(inode
);
1917 if (data
->state
!= NULL
&& data
->state
->inode
== inode
) {
1918 state
= data
->state
;
1919 refcount_inc(&state
->count
);
1921 state
= nfs4_get_open_state(inode
, data
->owner
);
1924 state
= ERR_PTR(-ENOMEM
);
1928 static struct nfs4_state
*
1929 _nfs4_opendata_to_nfs4_state(struct nfs4_opendata
*data
)
1931 struct nfs4_state
*state
;
1933 if (!data
->rpc_done
) {
1934 state
= nfs4_try_open_cached(data
);
1935 trace_nfs4_cached_open(data
->state
);
1939 state
= nfs4_opendata_find_nfs4_state(data
);
1943 if (data
->o_res
.delegation_type
!= 0)
1944 nfs4_opendata_check_deleg(data
, state
);
1945 update_open_stateid(state
, &data
->o_res
.stateid
, NULL
,
1948 nfs_release_seqid(data
->o_arg
.seqid
);
1952 static struct nfs4_state
*
1953 nfs4_opendata_to_nfs4_state(struct nfs4_opendata
*data
)
1955 struct nfs4_state
*ret
;
1957 if (data
->o_arg
.claim
== NFS4_OPEN_CLAIM_PREVIOUS
)
1958 ret
=_nfs4_opendata_reclaim_to_nfs4_state(data
);
1960 ret
= _nfs4_opendata_to_nfs4_state(data
);
1961 nfs4_sequence_free_slot(&data
->o_res
.seq_res
);
1965 static struct nfs_open_context
*
1966 nfs4_state_find_open_context_mode(struct nfs4_state
*state
, fmode_t mode
)
1968 struct nfs_inode
*nfsi
= NFS_I(state
->inode
);
1969 struct nfs_open_context
*ctx
;
1972 list_for_each_entry_rcu(ctx
, &nfsi
->open_files
, list
) {
1973 if (ctx
->state
!= state
)
1975 if ((ctx
->mode
& mode
) != mode
)
1977 if (!get_nfs_open_context(ctx
))
1983 return ERR_PTR(-ENOENT
);
1986 static struct nfs_open_context
*
1987 nfs4_state_find_open_context(struct nfs4_state
*state
)
1989 struct nfs_open_context
*ctx
;
1991 ctx
= nfs4_state_find_open_context_mode(state
, FMODE_READ
|FMODE_WRITE
);
1994 ctx
= nfs4_state_find_open_context_mode(state
, FMODE_WRITE
);
1997 return nfs4_state_find_open_context_mode(state
, FMODE_READ
);
2000 static struct nfs4_opendata
*nfs4_open_recoverdata_alloc(struct nfs_open_context
*ctx
,
2001 struct nfs4_state
*state
, enum open_claim_type4 claim
)
2003 struct nfs4_opendata
*opendata
;
2005 opendata
= nfs4_opendata_alloc(ctx
->dentry
, state
->owner
, 0, 0,
2006 NULL
, claim
, GFP_NOFS
);
2007 if (opendata
== NULL
)
2008 return ERR_PTR(-ENOMEM
);
2009 opendata
->state
= state
;
2010 refcount_inc(&state
->count
);
2014 static int nfs4_open_recover_helper(struct nfs4_opendata
*opendata
,
2017 struct nfs4_state
*newstate
;
2020 if (!nfs4_mode_match_open_stateid(opendata
->state
, fmode
))
2022 opendata
->o_arg
.open_flags
= 0;
2023 opendata
->o_arg
.fmode
= fmode
;
2024 opendata
->o_arg
.share_access
= nfs4_map_atomic_open_share(
2025 NFS_SB(opendata
->dentry
->d_sb
),
2027 memset(&opendata
->o_res
, 0, sizeof(opendata
->o_res
));
2028 memset(&opendata
->c_res
, 0, sizeof(opendata
->c_res
));
2029 nfs4_init_opendata_res(opendata
);
2030 ret
= _nfs4_recover_proc_open(opendata
);
2033 newstate
= nfs4_opendata_to_nfs4_state(opendata
);
2034 if (IS_ERR(newstate
))
2035 return PTR_ERR(newstate
);
2036 if (newstate
!= opendata
->state
)
2038 nfs4_close_state(newstate
, fmode
);
2042 static int nfs4_open_recover(struct nfs4_opendata
*opendata
, struct nfs4_state
*state
)
2046 /* Don't trigger recovery in nfs_test_and_clear_all_open_stateid */
2047 clear_bit(NFS_O_RDWR_STATE
, &state
->flags
);
2048 clear_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
2049 clear_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
2050 /* memory barrier prior to reading state->n_* */
2051 clear_bit(NFS_DELEGATED_STATE
, &state
->flags
);
2052 clear_bit(NFS_OPEN_STATE
, &state
->flags
);
2054 ret
= nfs4_open_recover_helper(opendata
, FMODE_READ
|FMODE_WRITE
);
2057 ret
= nfs4_open_recover_helper(opendata
, FMODE_WRITE
);
2060 ret
= nfs4_open_recover_helper(opendata
, FMODE_READ
);
2064 * We may have performed cached opens for all three recoveries.
2065 * Check if we need to update the current stateid.
2067 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) == 0 &&
2068 !nfs4_stateid_match(&state
->stateid
, &state
->open_stateid
)) {
2069 write_seqlock(&state
->seqlock
);
2070 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) == 0)
2071 nfs4_stateid_copy(&state
->stateid
, &state
->open_stateid
);
2072 write_sequnlock(&state
->seqlock
);
2079 * reclaim state on the server after a reboot.
2081 static int _nfs4_do_open_reclaim(struct nfs_open_context
*ctx
, struct nfs4_state
*state
)
2083 struct nfs_delegation
*delegation
;
2084 struct nfs4_opendata
*opendata
;
2085 fmode_t delegation_type
= 0;
2088 opendata
= nfs4_open_recoverdata_alloc(ctx
, state
,
2089 NFS4_OPEN_CLAIM_PREVIOUS
);
2090 if (IS_ERR(opendata
))
2091 return PTR_ERR(opendata
);
2093 delegation
= rcu_dereference(NFS_I(state
->inode
)->delegation
);
2094 if (delegation
!= NULL
&& test_bit(NFS_DELEGATION_NEED_RECLAIM
, &delegation
->flags
) != 0)
2095 delegation_type
= delegation
->type
;
2097 opendata
->o_arg
.u
.delegation_type
= delegation_type
;
2098 status
= nfs4_open_recover(opendata
, state
);
2099 nfs4_opendata_put(opendata
);
2103 static int nfs4_do_open_reclaim(struct nfs_open_context
*ctx
, struct nfs4_state
*state
)
2105 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
2106 struct nfs4_exception exception
= { };
2109 err
= _nfs4_do_open_reclaim(ctx
, state
);
2110 trace_nfs4_open_reclaim(ctx
, 0, err
);
2111 if (nfs4_clear_cap_atomic_open_v1(server
, err
, &exception
))
2113 if (err
!= -NFS4ERR_DELAY
)
2115 nfs4_handle_exception(server
, err
, &exception
);
2116 } while (exception
.retry
);
2120 static int nfs4_open_reclaim(struct nfs4_state_owner
*sp
, struct nfs4_state
*state
)
2122 struct nfs_open_context
*ctx
;
2125 ctx
= nfs4_state_find_open_context(state
);
2128 ret
= nfs4_do_open_reclaim(ctx
, state
);
2129 put_nfs_open_context(ctx
);
2133 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
)
2137 printk(KERN_ERR
"NFS: %s: unhandled error "
2138 "%d.\n", __func__
, err
);
2144 case -NFS4ERR_BADSESSION
:
2145 case -NFS4ERR_BADSLOT
:
2146 case -NFS4ERR_BAD_HIGH_SLOT
:
2147 case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION
:
2148 case -NFS4ERR_DEADSESSION
:
2149 set_bit(NFS_DELEGATED_STATE
, &state
->flags
);
2150 nfs4_schedule_session_recovery(server
->nfs_client
->cl_session
, err
);
2152 case -NFS4ERR_STALE_CLIENTID
:
2153 case -NFS4ERR_STALE_STATEID
:
2154 set_bit(NFS_DELEGATED_STATE
, &state
->flags
);
2155 /* Don't recall a delegation if it was lost */
2156 nfs4_schedule_lease_recovery(server
->nfs_client
);
2158 case -NFS4ERR_MOVED
:
2159 nfs4_schedule_migration_recovery(server
);
2161 case -NFS4ERR_LEASE_MOVED
:
2162 nfs4_schedule_lease_moved_recovery(server
->nfs_client
);
2164 case -NFS4ERR_DELEG_REVOKED
:
2165 case -NFS4ERR_ADMIN_REVOKED
:
2166 case -NFS4ERR_EXPIRED
:
2167 case -NFS4ERR_BAD_STATEID
:
2168 case -NFS4ERR_OPENMODE
:
2169 nfs_inode_find_state_and_recover(state
->inode
,
2171 nfs4_schedule_stateid_recovery(server
, state
);
2173 case -NFS4ERR_DELAY
:
2174 case -NFS4ERR_GRACE
:
2175 set_bit(NFS_DELEGATED_STATE
, &state
->flags
);
2179 case -NFS4ERR_DENIED
:
2181 struct nfs4_lock_state
*lsp
= fl
->fl_u
.nfs4_fl
.owner
;
2183 set_bit(NFS_LOCK_LOST
, &lsp
->ls_flags
);
2190 int nfs4_open_delegation_recall(struct nfs_open_context
*ctx
,
2191 struct nfs4_state
*state
, const nfs4_stateid
*stateid
,
2194 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
2195 struct nfs4_opendata
*opendata
;
2198 opendata
= nfs4_open_recoverdata_alloc(ctx
, state
,
2199 NFS4_OPEN_CLAIM_DELEG_CUR_FH
);
2200 if (IS_ERR(opendata
))
2201 return PTR_ERR(opendata
);
2202 nfs4_stateid_copy(&opendata
->o_arg
.u
.delegation
, stateid
);
2203 nfs_state_clear_delegation(state
);
2204 switch (type
& (FMODE_READ
|FMODE_WRITE
)) {
2205 case FMODE_READ
|FMODE_WRITE
:
2207 err
= nfs4_open_recover_helper(opendata
, FMODE_READ
|FMODE_WRITE
);
2210 err
= nfs4_open_recover_helper(opendata
, FMODE_WRITE
);
2215 err
= nfs4_open_recover_helper(opendata
, FMODE_READ
);
2217 nfs4_opendata_put(opendata
);
2218 return nfs4_handle_delegation_recall_error(server
, state
, stateid
, NULL
, err
);
2221 static void nfs4_open_confirm_prepare(struct rpc_task
*task
, void *calldata
)
2223 struct nfs4_opendata
*data
= calldata
;
2225 nfs4_setup_sequence(data
->o_arg
.server
->nfs_client
,
2226 &data
->c_arg
.seq_args
, &data
->c_res
.seq_res
, task
);
2229 static void nfs4_open_confirm_done(struct rpc_task
*task
, void *calldata
)
2231 struct nfs4_opendata
*data
= calldata
;
2233 nfs40_sequence_done(task
, &data
->c_res
.seq_res
);
2235 data
->rpc_status
= task
->tk_status
;
2236 if (data
->rpc_status
== 0) {
2237 nfs4_stateid_copy(&data
->o_res
.stateid
, &data
->c_res
.stateid
);
2238 nfs_confirm_seqid(&data
->owner
->so_seqid
, 0);
2239 renew_lease(data
->o_res
.server
, data
->timestamp
);
2240 data
->rpc_done
= true;
2244 static void nfs4_open_confirm_release(void *calldata
)
2246 struct nfs4_opendata
*data
= calldata
;
2247 struct nfs4_state
*state
= NULL
;
2249 /* If this request hasn't been cancelled, do nothing */
2250 if (!data
->cancelled
)
2252 /* In case of error, no cleanup! */
2253 if (!data
->rpc_done
)
2255 state
= nfs4_opendata_to_nfs4_state(data
);
2257 nfs4_close_state(state
, data
->o_arg
.fmode
);
2259 nfs4_opendata_put(data
);
2262 static const struct rpc_call_ops nfs4_open_confirm_ops
= {
2263 .rpc_call_prepare
= nfs4_open_confirm_prepare
,
2264 .rpc_call_done
= nfs4_open_confirm_done
,
2265 .rpc_release
= nfs4_open_confirm_release
,
2269 * Note: On error, nfs4_proc_open_confirm will free the struct nfs4_opendata
2271 static int _nfs4_proc_open_confirm(struct nfs4_opendata
*data
)
2273 struct nfs_server
*server
= NFS_SERVER(d_inode(data
->dir
));
2274 struct rpc_task
*task
;
2275 struct rpc_message msg
= {
2276 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_OPEN_CONFIRM
],
2277 .rpc_argp
= &data
->c_arg
,
2278 .rpc_resp
= &data
->c_res
,
2279 .rpc_cred
= data
->owner
->so_cred
,
2281 struct rpc_task_setup task_setup_data
= {
2282 .rpc_client
= server
->client
,
2283 .rpc_message
= &msg
,
2284 .callback_ops
= &nfs4_open_confirm_ops
,
2285 .callback_data
= data
,
2286 .workqueue
= nfsiod_workqueue
,
2287 .flags
= RPC_TASK_ASYNC
,
2291 nfs4_init_sequence(&data
->c_arg
.seq_args
, &data
->c_res
.seq_res
, 1,
2293 kref_get(&data
->kref
);
2294 data
->rpc_done
= false;
2295 data
->rpc_status
= 0;
2296 data
->timestamp
= jiffies
;
2297 task
= rpc_run_task(&task_setup_data
);
2299 return PTR_ERR(task
);
2300 status
= rpc_wait_for_completion_task(task
);
2302 data
->cancelled
= true;
2305 status
= data
->rpc_status
;
2310 static void nfs4_open_prepare(struct rpc_task
*task
, void *calldata
)
2312 struct nfs4_opendata
*data
= calldata
;
2313 struct nfs4_state_owner
*sp
= data
->owner
;
2314 struct nfs_client
*clp
= sp
->so_server
->nfs_client
;
2315 enum open_claim_type4 claim
= data
->o_arg
.claim
;
2317 if (nfs_wait_on_sequence(data
->o_arg
.seqid
, task
) != 0)
2320 * Check if we still need to send an OPEN call, or if we can use
2321 * a delegation instead.
2323 if (data
->state
!= NULL
) {
2324 struct nfs_delegation
*delegation
;
2326 if (can_open_cached(data
->state
, data
->o_arg
.fmode
,
2327 data
->o_arg
.open_flags
, claim
))
2330 delegation
= rcu_dereference(NFS_I(data
->state
->inode
)->delegation
);
2331 if (can_open_delegated(delegation
, data
->o_arg
.fmode
, claim
))
2332 goto unlock_no_action
;
2335 /* Update client id. */
2336 data
->o_arg
.clientid
= clp
->cl_clientid
;
2340 case NFS4_OPEN_CLAIM_PREVIOUS
:
2341 case NFS4_OPEN_CLAIM_DELEG_CUR_FH
:
2342 case NFS4_OPEN_CLAIM_DELEG_PREV_FH
:
2343 data
->o_arg
.open_bitmap
= &nfs4_open_noattr_bitmap
[0];
2345 case NFS4_OPEN_CLAIM_FH
:
2346 task
->tk_msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_OPEN_NOATTR
];
2348 data
->timestamp
= jiffies
;
2349 if (nfs4_setup_sequence(data
->o_arg
.server
->nfs_client
,
2350 &data
->o_arg
.seq_args
,
2351 &data
->o_res
.seq_res
,
2353 nfs_release_seqid(data
->o_arg
.seqid
);
2355 /* Set the create mode (note dependency on the session type) */
2356 data
->o_arg
.createmode
= NFS4_CREATE_UNCHECKED
;
2357 if (data
->o_arg
.open_flags
& O_EXCL
) {
2358 data
->o_arg
.createmode
= NFS4_CREATE_EXCLUSIVE
;
2359 if (nfs4_has_persistent_session(clp
))
2360 data
->o_arg
.createmode
= NFS4_CREATE_GUARDED
;
2361 else if (clp
->cl_mvops
->minor_version
> 0)
2362 data
->o_arg
.createmode
= NFS4_CREATE_EXCLUSIVE4_1
;
2366 trace_nfs4_cached_open(data
->state
);
2369 task
->tk_action
= NULL
;
2371 nfs4_sequence_done(task
, &data
->o_res
.seq_res
);
2374 static void nfs4_open_done(struct rpc_task
*task
, void *calldata
)
2376 struct nfs4_opendata
*data
= calldata
;
2378 data
->rpc_status
= task
->tk_status
;
2380 if (!nfs4_sequence_process(task
, &data
->o_res
.seq_res
))
2383 if (task
->tk_status
== 0) {
2384 if (data
->o_res
.f_attr
->valid
& NFS_ATTR_FATTR_TYPE
) {
2385 switch (data
->o_res
.f_attr
->mode
& S_IFMT
) {
2389 data
->rpc_status
= -ELOOP
;
2392 data
->rpc_status
= -EISDIR
;
2395 data
->rpc_status
= -ENOTDIR
;
2398 renew_lease(data
->o_res
.server
, data
->timestamp
);
2399 if (!(data
->o_res
.rflags
& NFS4_OPEN_RESULT_CONFIRM
))
2400 nfs_confirm_seqid(&data
->owner
->so_seqid
, 0);
2402 data
->rpc_done
= true;
2405 static void nfs4_open_release(void *calldata
)
2407 struct nfs4_opendata
*data
= calldata
;
2408 struct nfs4_state
*state
= NULL
;
2410 /* If this request hasn't been cancelled, do nothing */
2411 if (!data
->cancelled
)
2413 /* In case of error, no cleanup! */
2414 if (data
->rpc_status
!= 0 || !data
->rpc_done
)
2416 /* In case we need an open_confirm, no cleanup! */
2417 if (data
->o_res
.rflags
& NFS4_OPEN_RESULT_CONFIRM
)
2419 state
= nfs4_opendata_to_nfs4_state(data
);
2421 nfs4_close_state(state
, data
->o_arg
.fmode
);
2423 nfs4_opendata_put(data
);
2426 static const struct rpc_call_ops nfs4_open_ops
= {
2427 .rpc_call_prepare
= nfs4_open_prepare
,
2428 .rpc_call_done
= nfs4_open_done
,
2429 .rpc_release
= nfs4_open_release
,
2432 static int nfs4_run_open_task(struct nfs4_opendata
*data
,
2433 struct nfs_open_context
*ctx
)
2435 struct inode
*dir
= d_inode(data
->dir
);
2436 struct nfs_server
*server
= NFS_SERVER(dir
);
2437 struct nfs_openargs
*o_arg
= &data
->o_arg
;
2438 struct nfs_openres
*o_res
= &data
->o_res
;
2439 struct rpc_task
*task
;
2440 struct rpc_message msg
= {
2441 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_OPEN
],
2444 .rpc_cred
= data
->owner
->so_cred
,
2446 struct rpc_task_setup task_setup_data
= {
2447 .rpc_client
= server
->client
,
2448 .rpc_message
= &msg
,
2449 .callback_ops
= &nfs4_open_ops
,
2450 .callback_data
= data
,
2451 .workqueue
= nfsiod_workqueue
,
2452 .flags
= RPC_TASK_ASYNC
,
2456 kref_get(&data
->kref
);
2457 data
->rpc_done
= false;
2458 data
->rpc_status
= 0;
2459 data
->cancelled
= false;
2460 data
->is_recover
= false;
2462 nfs4_init_sequence(&o_arg
->seq_args
, &o_res
->seq_res
, 1, 1);
2463 data
->is_recover
= true;
2465 nfs4_init_sequence(&o_arg
->seq_args
, &o_res
->seq_res
, 1, 0);
2466 pnfs_lgopen_prepare(data
, ctx
);
2468 task
= rpc_run_task(&task_setup_data
);
2470 return PTR_ERR(task
);
2471 status
= rpc_wait_for_completion_task(task
);
2473 data
->cancelled
= true;
2476 status
= data
->rpc_status
;
2482 static int _nfs4_recover_proc_open(struct nfs4_opendata
*data
)
2484 struct inode
*dir
= d_inode(data
->dir
);
2485 struct nfs_openres
*o_res
= &data
->o_res
;
2488 status
= nfs4_run_open_task(data
, NULL
);
2489 if (status
!= 0 || !data
->rpc_done
)
2492 nfs_fattr_map_and_free_names(NFS_SERVER(dir
), &data
->f_attr
);
2494 if (o_res
->rflags
& NFS4_OPEN_RESULT_CONFIRM
)
2495 status
= _nfs4_proc_open_confirm(data
);
2501 * Additional permission checks in order to distinguish between an
2502 * open for read, and an open for execute. This works around the
2503 * fact that NFSv4 OPEN treats read and execute permissions as being
2505 * Note that in the non-execute case, we want to turn off permission
2506 * checking if we just created a new file (POSIX open() semantics).
2508 static int nfs4_opendata_access(const struct cred
*cred
,
2509 struct nfs4_opendata
*opendata
,
2510 struct nfs4_state
*state
, fmode_t fmode
,
2513 struct nfs_access_entry cache
;
2516 /* access call failed or for some reason the server doesn't
2517 * support any access modes -- defer access call until later */
2518 if (opendata
->o_res
.access_supported
== 0)
2523 * Use openflags to check for exec, because fmode won't
2524 * always have FMODE_EXEC set when file open for exec.
2526 if (openflags
& __FMODE_EXEC
) {
2527 /* ONLY check for exec rights */
2528 if (S_ISDIR(state
->inode
->i_mode
))
2529 mask
= NFS4_ACCESS_LOOKUP
;
2531 mask
= NFS4_ACCESS_EXECUTE
;
2532 } else if ((fmode
& FMODE_READ
) && !opendata
->file_created
)
2533 mask
= NFS4_ACCESS_READ
;
2536 nfs_access_set_mask(&cache
, opendata
->o_res
.access_result
);
2537 nfs_access_add_cache(state
->inode
, &cache
);
2539 flags
= NFS4_ACCESS_READ
| NFS4_ACCESS_EXECUTE
| NFS4_ACCESS_LOOKUP
;
2540 if ((mask
& ~cache
.mask
& flags
) == 0)
2547 * Note: On error, nfs4_proc_open will free the struct nfs4_opendata
2549 static int _nfs4_proc_open(struct nfs4_opendata
*data
,
2550 struct nfs_open_context
*ctx
)
2552 struct inode
*dir
= d_inode(data
->dir
);
2553 struct nfs_server
*server
= NFS_SERVER(dir
);
2554 struct nfs_openargs
*o_arg
= &data
->o_arg
;
2555 struct nfs_openres
*o_res
= &data
->o_res
;
2558 status
= nfs4_run_open_task(data
, ctx
);
2559 if (!data
->rpc_done
)
2562 if (status
== -NFS4ERR_BADNAME
&&
2563 !(o_arg
->open_flags
& O_CREAT
))
2568 nfs_fattr_map_and_free_names(server
, &data
->f_attr
);
2570 if (o_arg
->open_flags
& O_CREAT
) {
2571 if (o_arg
->open_flags
& O_EXCL
)
2572 data
->file_created
= true;
2573 else if (o_res
->cinfo
.before
!= o_res
->cinfo
.after
)
2574 data
->file_created
= true;
2575 if (data
->file_created
||
2576 inode_peek_iversion_raw(dir
) != o_res
->cinfo
.after
)
2577 update_changeattr(dir
, &o_res
->cinfo
,
2578 o_res
->f_attr
->time_start
, 0);
2580 if ((o_res
->rflags
& NFS4_OPEN_RESULT_LOCKTYPE_POSIX
) == 0)
2581 server
->caps
&= ~NFS_CAP_POSIX_LOCK
;
2582 if(o_res
->rflags
& NFS4_OPEN_RESULT_CONFIRM
) {
2583 status
= _nfs4_proc_open_confirm(data
);
2587 if (!(o_res
->f_attr
->valid
& NFS_ATTR_FATTR
)) {
2588 nfs4_sequence_free_slot(&o_res
->seq_res
);
2589 nfs4_proc_getattr(server
, &o_res
->fh
, o_res
->f_attr
,
2590 o_res
->f_label
, NULL
);
2597 * reclaim state on the server after a network partition.
2598 * Assumes caller holds the appropriate lock
2600 static int _nfs4_open_expired(struct nfs_open_context
*ctx
, struct nfs4_state
*state
)
2602 struct nfs4_opendata
*opendata
;
2605 opendata
= nfs4_open_recoverdata_alloc(ctx
, state
,
2606 NFS4_OPEN_CLAIM_FH
);
2607 if (IS_ERR(opendata
))
2608 return PTR_ERR(opendata
);
2609 ret
= nfs4_open_recover(opendata
, state
);
2611 d_drop(ctx
->dentry
);
2612 nfs4_opendata_put(opendata
);
2616 static int nfs4_do_open_expired(struct nfs_open_context
*ctx
, struct nfs4_state
*state
)
2618 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
2619 struct nfs4_exception exception
= { };
2623 err
= _nfs4_open_expired(ctx
, state
);
2624 trace_nfs4_open_expired(ctx
, 0, err
);
2625 if (nfs4_clear_cap_atomic_open_v1(server
, err
, &exception
))
2630 case -NFS4ERR_GRACE
:
2631 case -NFS4ERR_DELAY
:
2632 nfs4_handle_exception(server
, err
, &exception
);
2635 } while (exception
.retry
);
2640 static int nfs4_open_expired(struct nfs4_state_owner
*sp
, struct nfs4_state
*state
)
2642 struct nfs_open_context
*ctx
;
2645 ctx
= nfs4_state_find_open_context(state
);
2648 ret
= nfs4_do_open_expired(ctx
, state
);
2649 put_nfs_open_context(ctx
);
2653 static void nfs_finish_clear_delegation_stateid(struct nfs4_state
*state
,
2654 const nfs4_stateid
*stateid
)
2656 nfs_remove_bad_delegation(state
->inode
, stateid
);
2657 nfs_state_clear_delegation(state
);
2660 static void nfs40_clear_delegation_stateid(struct nfs4_state
*state
)
2662 if (rcu_access_pointer(NFS_I(state
->inode
)->delegation
) != NULL
)
2663 nfs_finish_clear_delegation_stateid(state
, NULL
);
2666 static int nfs40_open_expired(struct nfs4_state_owner
*sp
, struct nfs4_state
*state
)
2668 /* NFSv4.0 doesn't allow for delegation recovery on open expire */
2669 nfs40_clear_delegation_stateid(state
);
2670 return nfs4_open_expired(sp
, state
);
2673 static int nfs40_test_and_free_expired_stateid(struct nfs_server
*server
,
2674 nfs4_stateid
*stateid
,
2675 const struct cred
*cred
)
2677 return -NFS4ERR_BAD_STATEID
;
2680 #if defined(CONFIG_NFS_V4_1)
2681 static int nfs41_test_and_free_expired_stateid(struct nfs_server
*server
,
2682 nfs4_stateid
*stateid
,
2683 const struct cred
*cred
)
2687 switch (stateid
->type
) {
2690 case NFS4_INVALID_STATEID_TYPE
:
2691 case NFS4_SPECIAL_STATEID_TYPE
:
2692 return -NFS4ERR_BAD_STATEID
;
2693 case NFS4_REVOKED_STATEID_TYPE
:
2697 status
= nfs41_test_stateid(server
, stateid
, cred
);
2699 case -NFS4ERR_EXPIRED
:
2700 case -NFS4ERR_ADMIN_REVOKED
:
2701 case -NFS4ERR_DELEG_REVOKED
:
2707 /* Ack the revoked state to the server */
2708 nfs41_free_stateid(server
, stateid
, cred
, true);
2709 return -NFS4ERR_EXPIRED
;
2712 static void nfs41_check_delegation_stateid(struct nfs4_state
*state
)
2714 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
2715 nfs4_stateid stateid
;
2716 struct nfs_delegation
*delegation
;
2717 const struct cred
*cred
= NULL
;
2720 /* Get the delegation credential for use by test/free_stateid */
2722 delegation
= rcu_dereference(NFS_I(state
->inode
)->delegation
);
2723 if (delegation
== NULL
) {
2725 nfs_state_clear_delegation(state
);
2729 nfs4_stateid_copy(&stateid
, &delegation
->stateid
);
2730 if (test_bit(NFS_DELEGATION_REVOKED
, &delegation
->flags
)) {
2732 nfs_state_clear_delegation(state
);
2736 if (!test_and_clear_bit(NFS_DELEGATION_TEST_EXPIRED
,
2737 &delegation
->flags
)) {
2742 if (delegation
->cred
)
2743 cred
= get_cred(delegation
->cred
);
2745 status
= nfs41_test_and_free_expired_stateid(server
, &stateid
, cred
);
2746 trace_nfs4_test_delegation_stateid(state
, NULL
, status
);
2747 if (status
== -NFS4ERR_EXPIRED
|| status
== -NFS4ERR_BAD_STATEID
)
2748 nfs_finish_clear_delegation_stateid(state
, &stateid
);
2750 if (delegation
->cred
)
2755 * nfs41_check_expired_locks - possibly free a lock stateid
2757 * @state: NFSv4 state for an inode
2759 * Returns NFS_OK if recovery for this stateid is now finished.
2760 * Otherwise a negative NFS4ERR value is returned.
2762 static int nfs41_check_expired_locks(struct nfs4_state
*state
)
2764 int status
, ret
= NFS_OK
;
2765 struct nfs4_lock_state
*lsp
, *prev
= NULL
;
2766 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
2768 if (!test_bit(LK_STATE_IN_USE
, &state
->flags
))
2771 spin_lock(&state
->state_lock
);
2772 list_for_each_entry(lsp
, &state
->lock_states
, ls_locks
) {
2773 if (test_bit(NFS_LOCK_INITIALIZED
, &lsp
->ls_flags
)) {
2774 const struct cred
*cred
= lsp
->ls_state
->owner
->so_cred
;
2776 refcount_inc(&lsp
->ls_count
);
2777 spin_unlock(&state
->state_lock
);
2779 nfs4_put_lock_state(prev
);
2782 status
= nfs41_test_and_free_expired_stateid(server
,
2785 trace_nfs4_test_lock_stateid(state
, lsp
, status
);
2786 if (status
== -NFS4ERR_EXPIRED
||
2787 status
== -NFS4ERR_BAD_STATEID
) {
2788 clear_bit(NFS_LOCK_INITIALIZED
, &lsp
->ls_flags
);
2789 lsp
->ls_stateid
.type
= NFS4_INVALID_STATEID_TYPE
;
2790 if (!recover_lost_locks
)
2791 set_bit(NFS_LOCK_LOST
, &lsp
->ls_flags
);
2792 } else if (status
!= NFS_OK
) {
2794 nfs4_put_lock_state(prev
);
2797 spin_lock(&state
->state_lock
);
2800 spin_unlock(&state
->state_lock
);
2801 nfs4_put_lock_state(prev
);
2807 * nfs41_check_open_stateid - possibly free an open stateid
2809 * @state: NFSv4 state for an inode
2811 * Returns NFS_OK if recovery for this stateid is now finished.
2812 * Otherwise a negative NFS4ERR value is returned.
2814 static int nfs41_check_open_stateid(struct nfs4_state
*state
)
2816 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
2817 nfs4_stateid
*stateid
= &state
->open_stateid
;
2818 const struct cred
*cred
= state
->owner
->so_cred
;
2821 if (test_bit(NFS_OPEN_STATE
, &state
->flags
) == 0) {
2822 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) == 0) {
2823 if (nfs4_have_delegation(state
->inode
, state
->state
))
2825 return -NFS4ERR_OPENMODE
;
2827 return -NFS4ERR_BAD_STATEID
;
2829 status
= nfs41_test_and_free_expired_stateid(server
, stateid
, cred
);
2830 trace_nfs4_test_open_stateid(state
, NULL
, status
);
2831 if (status
== -NFS4ERR_EXPIRED
|| status
== -NFS4ERR_BAD_STATEID
) {
2832 clear_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
2833 clear_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
2834 clear_bit(NFS_O_RDWR_STATE
, &state
->flags
);
2835 clear_bit(NFS_OPEN_STATE
, &state
->flags
);
2836 stateid
->type
= NFS4_INVALID_STATEID_TYPE
;
2839 if (nfs_open_stateid_recover_openmode(state
))
2840 return -NFS4ERR_OPENMODE
;
2844 static int nfs41_open_expired(struct nfs4_state_owner
*sp
, struct nfs4_state
*state
)
2848 nfs41_check_delegation_stateid(state
);
2849 status
= nfs41_check_expired_locks(state
);
2850 if (status
!= NFS_OK
)
2852 status
= nfs41_check_open_stateid(state
);
2853 if (status
!= NFS_OK
)
2854 status
= nfs4_open_expired(sp
, state
);
2860 * on an EXCLUSIVE create, the server should send back a bitmask with FATTR4-*
2861 * fields corresponding to attributes that were used to store the verifier.
2862 * Make sure we clobber those fields in the later setattr call
2864 static unsigned nfs4_exclusive_attrset(struct nfs4_opendata
*opendata
,
2865 struct iattr
*sattr
, struct nfs4_label
**label
)
2867 const __u32
*bitmask
= opendata
->o_arg
.server
->exclcreat_bitmask
;
2872 for (i
= 0; i
< ARRAY_SIZE(attrset
); i
++) {
2873 attrset
[i
] = opendata
->o_res
.attrset
[i
];
2874 if (opendata
->o_arg
.createmode
== NFS4_CREATE_EXCLUSIVE4_1
)
2875 attrset
[i
] &= ~bitmask
[i
];
2878 ret
= (opendata
->o_arg
.createmode
== NFS4_CREATE_EXCLUSIVE
) ?
2879 sattr
->ia_valid
: 0;
2881 if ((attrset
[1] & (FATTR4_WORD1_TIME_ACCESS
|FATTR4_WORD1_TIME_ACCESS_SET
))) {
2882 if (sattr
->ia_valid
& ATTR_ATIME_SET
)
2883 ret
|= ATTR_ATIME_SET
;
2888 if ((attrset
[1] & (FATTR4_WORD1_TIME_MODIFY
|FATTR4_WORD1_TIME_MODIFY_SET
))) {
2889 if (sattr
->ia_valid
& ATTR_MTIME_SET
)
2890 ret
|= ATTR_MTIME_SET
;
2895 if (!(attrset
[2] & FATTR4_WORD2_SECURITY_LABEL
))
2900 static int _nfs4_open_and_get_state(struct nfs4_opendata
*opendata
,
2903 struct nfs_open_context
*ctx
)
2905 struct nfs4_state_owner
*sp
= opendata
->owner
;
2906 struct nfs_server
*server
= sp
->so_server
;
2907 struct dentry
*dentry
;
2908 struct nfs4_state
*state
;
2912 seq
= raw_seqcount_begin(&sp
->so_reclaim_seqcount
);
2914 ret
= _nfs4_proc_open(opendata
, ctx
);
2918 state
= _nfs4_opendata_to_nfs4_state(opendata
);
2919 ret
= PTR_ERR(state
);
2923 if (server
->caps
& NFS_CAP_POSIX_LOCK
)
2924 set_bit(NFS_STATE_POSIX_LOCKS
, &state
->flags
);
2925 if (opendata
->o_res
.rflags
& NFS4_OPEN_RESULT_MAY_NOTIFY_LOCK
)
2926 set_bit(NFS_STATE_MAY_NOTIFY_LOCK
, &state
->flags
);
2928 dentry
= opendata
->dentry
;
2929 if (d_really_is_negative(dentry
)) {
2930 struct dentry
*alias
;
2932 alias
= d_exact_alias(dentry
, state
->inode
);
2934 alias
= d_splice_alias(igrab(state
->inode
), dentry
);
2935 /* d_splice_alias() can't fail here - it's a non-directory */
2938 ctx
->dentry
= dentry
= alias
;
2940 nfs_set_verifier(dentry
,
2941 nfs_save_change_attribute(d_inode(opendata
->dir
)));
2944 /* Parse layoutget results before we check for access */
2945 pnfs_parse_lgopen(state
->inode
, opendata
->lgp
, ctx
);
2947 ret
= nfs4_opendata_access(sp
->so_cred
, opendata
, state
, fmode
, flags
);
2951 if (d_inode(dentry
) == state
->inode
) {
2952 nfs_inode_attach_open_context(ctx
);
2953 if (read_seqcount_retry(&sp
->so_reclaim_seqcount
, seq
))
2954 nfs4_schedule_stateid_recovery(server
, state
);
2958 if (!opendata
->cancelled
)
2959 nfs4_sequence_free_slot(&opendata
->o_res
.seq_res
);
2964 * Returns a referenced nfs4_state
2966 static int _nfs4_do_open(struct inode
*dir
,
2967 struct nfs_open_context
*ctx
,
2969 const struct nfs4_open_createattrs
*c
,
2972 struct nfs4_state_owner
*sp
;
2973 struct nfs4_state
*state
= NULL
;
2974 struct nfs_server
*server
= NFS_SERVER(dir
);
2975 struct nfs4_opendata
*opendata
;
2976 struct dentry
*dentry
= ctx
->dentry
;
2977 const struct cred
*cred
= ctx
->cred
;
2978 struct nfs4_threshold
**ctx_th
= &ctx
->mdsthreshold
;
2979 fmode_t fmode
= ctx
->mode
& (FMODE_READ
|FMODE_WRITE
|FMODE_EXEC
);
2980 enum open_claim_type4 claim
= NFS4_OPEN_CLAIM_NULL
;
2981 struct iattr
*sattr
= c
->sattr
;
2982 struct nfs4_label
*label
= c
->label
;
2983 struct nfs4_label
*olabel
= NULL
;
2986 /* Protect against reboot recovery conflicts */
2988 sp
= nfs4_get_state_owner(server
, cred
, GFP_KERNEL
);
2990 dprintk("nfs4_do_open: nfs4_get_state_owner failed!\n");
2993 status
= nfs4_client_recover_expired_lease(server
->nfs_client
);
2995 goto err_put_state_owner
;
2996 if (d_really_is_positive(dentry
))
2997 nfs4_return_incompatible_delegation(d_inode(dentry
), fmode
);
2999 if (d_really_is_positive(dentry
))
3000 claim
= NFS4_OPEN_CLAIM_FH
;
3001 opendata
= nfs4_opendata_alloc(dentry
, sp
, fmode
, flags
,
3002 c
, claim
, GFP_KERNEL
);
3003 if (opendata
== NULL
)
3004 goto err_put_state_owner
;
3007 olabel
= nfs4_label_alloc(server
, GFP_KERNEL
);
3008 if (IS_ERR(olabel
)) {
3009 status
= PTR_ERR(olabel
);
3010 goto err_opendata_put
;
3014 if (server
->attr_bitmask
[2] & FATTR4_WORD2_MDSTHRESHOLD
) {
3015 if (!opendata
->f_attr
.mdsthreshold
) {
3016 opendata
->f_attr
.mdsthreshold
= pnfs_mdsthreshold_alloc();
3017 if (!opendata
->f_attr
.mdsthreshold
)
3018 goto err_free_label
;
3020 opendata
->o_arg
.open_bitmap
= &nfs4_pnfs_open_bitmap
[0];
3022 if (d_really_is_positive(dentry
))
3023 opendata
->state
= nfs4_get_open_state(d_inode(dentry
), sp
);
3025 status
= _nfs4_open_and_get_state(opendata
, fmode
, flags
, ctx
);
3027 goto err_free_label
;
3030 if ((opendata
->o_arg
.open_flags
& (O_CREAT
|O_EXCL
)) == (O_CREAT
|O_EXCL
) &&
3031 (opendata
->o_arg
.createmode
!= NFS4_CREATE_GUARDED
)) {
3032 unsigned attrs
= nfs4_exclusive_attrset(opendata
, sattr
, &label
);
3034 * send create attributes which was not set by open
3035 * with an extra setattr.
3037 if (attrs
|| label
) {
3038 unsigned ia_old
= sattr
->ia_valid
;
3040 sattr
->ia_valid
= attrs
;
3041 nfs_fattr_init(opendata
->o_res
.f_attr
);
3042 status
= nfs4_do_setattr(state
->inode
, cred
,
3043 opendata
->o_res
.f_attr
, sattr
,
3044 ctx
, label
, olabel
);
3046 nfs_setattr_update_inode(state
->inode
, sattr
,
3047 opendata
->o_res
.f_attr
);
3048 nfs_setsecurity(state
->inode
, opendata
->o_res
.f_attr
, olabel
);
3050 sattr
->ia_valid
= ia_old
;
3053 if (opened
&& opendata
->file_created
)
3056 if (pnfs_use_threshold(ctx_th
, opendata
->f_attr
.mdsthreshold
, server
)) {
3057 *ctx_th
= opendata
->f_attr
.mdsthreshold
;
3058 opendata
->f_attr
.mdsthreshold
= NULL
;
3061 nfs4_label_free(olabel
);
3063 nfs4_opendata_put(opendata
);
3064 nfs4_put_state_owner(sp
);
3067 nfs4_label_free(olabel
);
3069 nfs4_opendata_put(opendata
);
3070 err_put_state_owner
:
3071 nfs4_put_state_owner(sp
);
3077 static struct nfs4_state
*nfs4_do_open(struct inode
*dir
,
3078 struct nfs_open_context
*ctx
,
3080 struct iattr
*sattr
,
3081 struct nfs4_label
*label
,
3084 struct nfs_server
*server
= NFS_SERVER(dir
);
3085 struct nfs4_exception exception
= {
3086 .interruptible
= true,
3088 struct nfs4_state
*res
;
3089 struct nfs4_open_createattrs c
= {
3093 [0] = (__u32
)jiffies
,
3094 [1] = (__u32
)current
->pid
,
3100 status
= _nfs4_do_open(dir
, ctx
, flags
, &c
, opened
);
3102 trace_nfs4_open_file(ctx
, flags
, status
);
3105 /* NOTE: BAD_SEQID means the server and client disagree about the
3106 * book-keeping w.r.t. state-changing operations
3107 * (OPEN/CLOSE/LOCK/LOCKU...)
3108 * It is actually a sign of a bug on the client or on the server.
3110 * If we receive a BAD_SEQID error in the particular case of
3111 * doing an OPEN, we assume that nfs_increment_open_seqid() will
3112 * have unhashed the old state_owner for us, and that we can
3113 * therefore safely retry using a new one. We should still warn
3114 * the user though...
3116 if (status
== -NFS4ERR_BAD_SEQID
) {
3117 pr_warn_ratelimited("NFS: v4 server %s "
3118 " returned a bad sequence-id error!\n",
3119 NFS_SERVER(dir
)->nfs_client
->cl_hostname
);
3120 exception
.retry
= 1;
3124 * BAD_STATEID on OPEN means that the server cancelled our
3125 * state before it received the OPEN_CONFIRM.
3126 * Recover by retrying the request as per the discussion
3127 * on Page 181 of RFC3530.
3129 if (status
== -NFS4ERR_BAD_STATEID
) {
3130 exception
.retry
= 1;
3133 if (status
== -EAGAIN
) {
3134 /* We must have found a delegation */
3135 exception
.retry
= 1;
3138 if (nfs4_clear_cap_atomic_open_v1(server
, status
, &exception
))
3140 res
= ERR_PTR(nfs4_handle_exception(server
,
3141 status
, &exception
));
3142 } while (exception
.retry
);
3146 static int _nfs4_do_setattr(struct inode
*inode
,
3147 struct nfs_setattrargs
*arg
,
3148 struct nfs_setattrres
*res
,
3149 const struct cred
*cred
,
3150 struct nfs_open_context
*ctx
)
3152 struct nfs_server
*server
= NFS_SERVER(inode
);
3153 struct rpc_message msg
= {
3154 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETATTR
],
3159 const struct cred
*delegation_cred
= NULL
;
3160 unsigned long timestamp
= jiffies
;
3164 nfs_fattr_init(res
->fattr
);
3166 /* Servers should only apply open mode checks for file size changes */
3167 truncate
= (arg
->iap
->ia_valid
& ATTR_SIZE
) ? true : false;
3171 if (nfs4_copy_delegation_stateid(inode
, FMODE_WRITE
, &arg
->stateid
, &delegation_cred
)) {
3172 /* Use that stateid */
3173 } else if (ctx
!= NULL
) {
3174 struct nfs_lock_context
*l_ctx
;
3175 if (!nfs4_valid_open_stateid(ctx
->state
))
3177 l_ctx
= nfs_get_lock_context(ctx
);
3179 return PTR_ERR(l_ctx
);
3180 status
= nfs4_select_rw_stateid(ctx
->state
, FMODE_WRITE
, l_ctx
,
3181 &arg
->stateid
, &delegation_cred
);
3182 nfs_put_lock_context(l_ctx
);
3187 nfs4_stateid_copy(&arg
->stateid
, &zero_stateid
);
3189 if (delegation_cred
)
3190 msg
.rpc_cred
= delegation_cred
;
3192 status
= nfs4_call_sync(server
->client
, server
, &msg
, &arg
->seq_args
, &res
->seq_res
, 1);
3194 put_cred(delegation_cred
);
3195 if (status
== 0 && ctx
!= NULL
)
3196 renew_lease(server
, timestamp
);
3197 trace_nfs4_setattr(inode
, &arg
->stateid
, status
);
3201 static int nfs4_do_setattr(struct inode
*inode
, const struct cred
*cred
,
3202 struct nfs_fattr
*fattr
, struct iattr
*sattr
,
3203 struct nfs_open_context
*ctx
, struct nfs4_label
*ilabel
,
3204 struct nfs4_label
*olabel
)
3206 struct nfs_server
*server
= NFS_SERVER(inode
);
3207 __u32 bitmask
[NFS4_BITMASK_SZ
];
3208 struct nfs4_state
*state
= ctx
? ctx
->state
: NULL
;
3209 struct nfs_setattrargs arg
= {
3210 .fh
= NFS_FH(inode
),
3216 struct nfs_setattrres res
= {
3221 struct nfs4_exception exception
= {
3224 .stateid
= &arg
.stateid
,
3229 nfs4_bitmap_copy_adjust_setattr(bitmask
,
3230 nfs4_bitmask(server
, olabel
),
3233 err
= _nfs4_do_setattr(inode
, &arg
, &res
, cred
, ctx
);
3235 case -NFS4ERR_OPENMODE
:
3236 if (!(sattr
->ia_valid
& ATTR_SIZE
)) {
3237 pr_warn_once("NFSv4: server %s is incorrectly "
3238 "applying open mode checks to "
3239 "a SETATTR that is not "
3240 "changing file size.\n",
3241 server
->nfs_client
->cl_hostname
);
3243 if (state
&& !(state
->state
& FMODE_WRITE
)) {
3245 if (sattr
->ia_valid
& ATTR_OPEN
)
3250 err
= nfs4_handle_exception(server
, err
, &exception
);
3251 } while (exception
.retry
);
3257 nfs4_wait_on_layoutreturn(struct inode
*inode
, struct rpc_task
*task
)
3259 if (inode
== NULL
|| !nfs_have_layout(inode
))
3262 return pnfs_wait_on_layoutreturn(inode
, task
);
3265 struct nfs4_closedata
{
3266 struct inode
*inode
;
3267 struct nfs4_state
*state
;
3268 struct nfs_closeargs arg
;
3269 struct nfs_closeres res
;
3271 struct nfs4_layoutreturn_args arg
;
3272 struct nfs4_layoutreturn_res res
;
3273 struct nfs4_xdr_opaque_data ld_private
;
3277 struct nfs_fattr fattr
;
3278 unsigned long timestamp
;
3281 static void nfs4_free_closedata(void *data
)
3283 struct nfs4_closedata
*calldata
= data
;
3284 struct nfs4_state_owner
*sp
= calldata
->state
->owner
;
3285 struct super_block
*sb
= calldata
->state
->inode
->i_sb
;
3287 if (calldata
->lr
.roc
)
3288 pnfs_roc_release(&calldata
->lr
.arg
, &calldata
->lr
.res
,
3289 calldata
->res
.lr_ret
);
3290 nfs4_put_open_state(calldata
->state
);
3291 nfs_free_seqid(calldata
->arg
.seqid
);
3292 nfs4_put_state_owner(sp
);
3293 nfs_sb_deactive(sb
);
3297 static void nfs4_close_done(struct rpc_task
*task
, void *data
)
3299 struct nfs4_closedata
*calldata
= data
;
3300 struct nfs4_state
*state
= calldata
->state
;
3301 struct nfs_server
*server
= NFS_SERVER(calldata
->inode
);
3302 nfs4_stateid
*res_stateid
= NULL
;
3303 struct nfs4_exception exception
= {
3305 .inode
= calldata
->inode
,
3306 .stateid
= &calldata
->arg
.stateid
,
3309 dprintk("%s: begin!\n", __func__
);
3310 if (!nfs4_sequence_done(task
, &calldata
->res
.seq_res
))
3312 trace_nfs4_close(state
, &calldata
->arg
, &calldata
->res
, task
->tk_status
);
3314 /* Handle Layoutreturn errors */
3315 if (calldata
->arg
.lr_args
&& task
->tk_status
!= 0) {
3316 switch (calldata
->res
.lr_ret
) {
3318 calldata
->res
.lr_ret
= -NFS4ERR_NOMATCHING_LAYOUT
;
3321 calldata
->arg
.lr_args
= NULL
;
3322 calldata
->res
.lr_res
= NULL
;
3324 case -NFS4ERR_OLD_STATEID
:
3325 if (nfs4_layoutreturn_refresh_stateid(&calldata
->arg
.lr_args
->stateid
,
3326 &calldata
->arg
.lr_args
->range
,
3330 case -NFS4ERR_ADMIN_REVOKED
:
3331 case -NFS4ERR_DELEG_REVOKED
:
3332 case -NFS4ERR_EXPIRED
:
3333 case -NFS4ERR_BAD_STATEID
:
3334 case -NFS4ERR_UNKNOWN_LAYOUTTYPE
:
3335 case -NFS4ERR_WRONG_CRED
:
3336 calldata
->arg
.lr_args
= NULL
;
3337 calldata
->res
.lr_res
= NULL
;
3342 /* hmm. we are done with the inode, and in the process of freeing
3343 * the state_owner. we keep this around to process errors
3345 switch (task
->tk_status
) {
3347 res_stateid
= &calldata
->res
.stateid
;
3348 renew_lease(server
, calldata
->timestamp
);
3350 case -NFS4ERR_ACCESS
:
3351 if (calldata
->arg
.bitmask
!= NULL
) {
3352 calldata
->arg
.bitmask
= NULL
;
3353 calldata
->res
.fattr
= NULL
;
3358 case -NFS4ERR_OLD_STATEID
:
3359 /* Did we race with OPEN? */
3360 if (nfs4_refresh_open_stateid(&calldata
->arg
.stateid
,
3364 case -NFS4ERR_ADMIN_REVOKED
:
3365 case -NFS4ERR_STALE_STATEID
:
3366 case -NFS4ERR_EXPIRED
:
3367 nfs4_free_revoked_stateid(server
,
3368 &calldata
->arg
.stateid
,
3369 task
->tk_msg
.rpc_cred
);
3371 case -NFS4ERR_BAD_STATEID
:
3374 task
->tk_status
= nfs4_async_handle_exception(task
,
3375 server
, task
->tk_status
, &exception
);
3376 if (exception
.retry
)
3379 nfs_clear_open_stateid(state
, &calldata
->arg
.stateid
,
3380 res_stateid
, calldata
->arg
.fmode
);
3382 task
->tk_status
= 0;
3383 nfs_release_seqid(calldata
->arg
.seqid
);
3384 nfs_refresh_inode(calldata
->inode
, &calldata
->fattr
);
3385 dprintk("%s: done, ret = %d!\n", __func__
, task
->tk_status
);
3388 calldata
->res
.lr_ret
= 0;
3390 task
->tk_status
= 0;
3391 rpc_restart_call_prepare(task
);
3395 static void nfs4_close_prepare(struct rpc_task
*task
, void *data
)
3397 struct nfs4_closedata
*calldata
= data
;
3398 struct nfs4_state
*state
= calldata
->state
;
3399 struct inode
*inode
= calldata
->inode
;
3400 struct pnfs_layout_hdr
*lo
;
3401 bool is_rdonly
, is_wronly
, is_rdwr
;
3404 dprintk("%s: begin!\n", __func__
);
3405 if (nfs_wait_on_sequence(calldata
->arg
.seqid
, task
) != 0)
3408 task
->tk_msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_OPEN_DOWNGRADE
];
3409 spin_lock(&state
->owner
->so_lock
);
3410 is_rdwr
= test_bit(NFS_O_RDWR_STATE
, &state
->flags
);
3411 is_rdonly
= test_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
3412 is_wronly
= test_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
3413 /* Calculate the change in open mode */
3414 calldata
->arg
.fmode
= 0;
3415 if (state
->n_rdwr
== 0) {
3416 if (state
->n_rdonly
== 0)
3417 call_close
|= is_rdonly
;
3419 calldata
->arg
.fmode
|= FMODE_READ
;
3420 if (state
->n_wronly
== 0)
3421 call_close
|= is_wronly
;
3423 calldata
->arg
.fmode
|= FMODE_WRITE
;
3424 if (calldata
->arg
.fmode
!= (FMODE_READ
|FMODE_WRITE
))
3425 call_close
|= is_rdwr
;
3427 calldata
->arg
.fmode
|= FMODE_READ
|FMODE_WRITE
;
3429 if (!nfs4_valid_open_stateid(state
) ||
3430 !nfs4_refresh_open_stateid(&calldata
->arg
.stateid
, state
))
3432 spin_unlock(&state
->owner
->so_lock
);
3435 /* Note: exit _without_ calling nfs4_close_done */
3439 if (!calldata
->lr
.roc
&& nfs4_wait_on_layoutreturn(inode
, task
)) {
3440 nfs_release_seqid(calldata
->arg
.seqid
);
3444 lo
= calldata
->arg
.lr_args
? calldata
->arg
.lr_args
->layout
: NULL
;
3445 if (lo
&& !pnfs_layout_is_valid(lo
)) {
3446 calldata
->arg
.lr_args
= NULL
;
3447 calldata
->res
.lr_res
= NULL
;
3450 if (calldata
->arg
.fmode
== 0)
3451 task
->tk_msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_CLOSE
];
3453 if (calldata
->arg
.fmode
== 0 || calldata
->arg
.fmode
== FMODE_READ
) {
3454 /* Close-to-open cache consistency revalidation */
3455 if (!nfs4_have_delegation(inode
, FMODE_READ
))
3456 calldata
->arg
.bitmask
= NFS_SERVER(inode
)->cache_consistency_bitmask
;
3458 calldata
->arg
.bitmask
= NULL
;
3461 calldata
->arg
.share_access
=
3462 nfs4_map_atomic_open_share(NFS_SERVER(inode
),
3463 calldata
->arg
.fmode
, 0);
3465 if (calldata
->res
.fattr
== NULL
)
3466 calldata
->arg
.bitmask
= NULL
;
3467 else if (calldata
->arg
.bitmask
== NULL
)
3468 calldata
->res
.fattr
= NULL
;
3469 calldata
->timestamp
= jiffies
;
3470 if (nfs4_setup_sequence(NFS_SERVER(inode
)->nfs_client
,
3471 &calldata
->arg
.seq_args
,
3472 &calldata
->res
.seq_res
,
3474 nfs_release_seqid(calldata
->arg
.seqid
);
3475 dprintk("%s: done!\n", __func__
);
3478 task
->tk_action
= NULL
;
3480 nfs4_sequence_done(task
, &calldata
->res
.seq_res
);
3483 static const struct rpc_call_ops nfs4_close_ops
= {
3484 .rpc_call_prepare
= nfs4_close_prepare
,
3485 .rpc_call_done
= nfs4_close_done
,
3486 .rpc_release
= nfs4_free_closedata
,
3490 * It is possible for data to be read/written from a mem-mapped file
3491 * after the sys_close call (which hits the vfs layer as a flush).
3492 * This means that we can't safely call nfsv4 close on a file until
3493 * the inode is cleared. This in turn means that we are not good
3494 * NFSv4 citizens - we do not indicate to the server to update the file's
3495 * share state even when we are done with one of the three share
3496 * stateid's in the inode.
3498 * NOTE: Caller must be holding the sp->so_owner semaphore!
3500 int nfs4_do_close(struct nfs4_state
*state
, gfp_t gfp_mask
, int wait
)
3502 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
3503 struct nfs_seqid
*(*alloc_seqid
)(struct nfs_seqid_counter
*, gfp_t
);
3504 struct nfs4_closedata
*calldata
;
3505 struct nfs4_state_owner
*sp
= state
->owner
;
3506 struct rpc_task
*task
;
3507 struct rpc_message msg
= {
3508 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_CLOSE
],
3509 .rpc_cred
= state
->owner
->so_cred
,
3511 struct rpc_task_setup task_setup_data
= {
3512 .rpc_client
= server
->client
,
3513 .rpc_message
= &msg
,
3514 .callback_ops
= &nfs4_close_ops
,
3515 .workqueue
= nfsiod_workqueue
,
3516 .flags
= RPC_TASK_ASYNC
,
3518 int status
= -ENOMEM
;
3520 nfs4_state_protect(server
->nfs_client
, NFS_SP4_MACH_CRED_CLEANUP
,
3521 &task_setup_data
.rpc_client
, &msg
);
3523 calldata
= kzalloc(sizeof(*calldata
), gfp_mask
);
3524 if (calldata
== NULL
)
3526 nfs4_init_sequence(&calldata
->arg
.seq_args
, &calldata
->res
.seq_res
, 1, 0);
3527 calldata
->inode
= state
->inode
;
3528 calldata
->state
= state
;
3529 calldata
->arg
.fh
= NFS_FH(state
->inode
);
3530 if (!nfs4_copy_open_stateid(&calldata
->arg
.stateid
, state
))
3531 goto out_free_calldata
;
3532 /* Serialization for the sequence id */
3533 alloc_seqid
= server
->nfs_client
->cl_mvops
->alloc_seqid
;
3534 calldata
->arg
.seqid
= alloc_seqid(&state
->owner
->so_seqid
, gfp_mask
);
3535 if (IS_ERR(calldata
->arg
.seqid
))
3536 goto out_free_calldata
;
3537 nfs_fattr_init(&calldata
->fattr
);
3538 calldata
->arg
.fmode
= 0;
3539 calldata
->lr
.arg
.ld_private
= &calldata
->lr
.ld_private
;
3540 calldata
->res
.fattr
= &calldata
->fattr
;
3541 calldata
->res
.seqid
= calldata
->arg
.seqid
;
3542 calldata
->res
.server
= server
;
3543 calldata
->res
.lr_ret
= -NFS4ERR_NOMATCHING_LAYOUT
;
3544 calldata
->lr
.roc
= pnfs_roc(state
->inode
,
3545 &calldata
->lr
.arg
, &calldata
->lr
.res
, msg
.rpc_cred
);
3546 if (calldata
->lr
.roc
) {
3547 calldata
->arg
.lr_args
= &calldata
->lr
.arg
;
3548 calldata
->res
.lr_res
= &calldata
->lr
.res
;
3550 nfs_sb_active(calldata
->inode
->i_sb
);
3552 msg
.rpc_argp
= &calldata
->arg
;
3553 msg
.rpc_resp
= &calldata
->res
;
3554 task_setup_data
.callback_data
= calldata
;
3555 task
= rpc_run_task(&task_setup_data
);
3557 return PTR_ERR(task
);
3560 status
= rpc_wait_for_completion_task(task
);
3566 nfs4_put_open_state(state
);
3567 nfs4_put_state_owner(sp
);
3571 static struct inode
*
3572 nfs4_atomic_open(struct inode
*dir
, struct nfs_open_context
*ctx
,
3573 int open_flags
, struct iattr
*attr
, int *opened
)
3575 struct nfs4_state
*state
;
3576 struct nfs4_label l
= {0, 0, 0, NULL
}, *label
= NULL
;
3578 label
= nfs4_label_init_security(dir
, ctx
->dentry
, attr
, &l
);
3580 /* Protect against concurrent sillydeletes */
3581 state
= nfs4_do_open(dir
, ctx
, open_flags
, attr
, label
, opened
);
3583 nfs4_label_release_security(label
);
3586 return ERR_CAST(state
);
3587 return state
->inode
;
3590 static void nfs4_close_context(struct nfs_open_context
*ctx
, int is_sync
)
3592 if (ctx
->state
== NULL
)
3595 nfs4_close_sync(ctx
->state
, ctx
->mode
);
3597 nfs4_close_state(ctx
->state
, ctx
->mode
);
3600 #define FATTR4_WORD1_NFS40_MASK (2*FATTR4_WORD1_MOUNTED_ON_FILEID - 1UL)
3601 #define FATTR4_WORD2_NFS41_MASK (2*FATTR4_WORD2_SUPPATTR_EXCLCREAT - 1UL)
3602 #define FATTR4_WORD2_NFS42_MASK (2*FATTR4_WORD2_MODE_UMASK - 1UL)
3604 static int _nfs4_server_capabilities(struct nfs_server
*server
, struct nfs_fh
*fhandle
)
3606 u32 bitmask
[3] = {}, minorversion
= server
->nfs_client
->cl_minorversion
;
3607 struct nfs4_server_caps_arg args
= {
3611 struct nfs4_server_caps_res res
= {};
3612 struct rpc_message msg
= {
3613 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SERVER_CAPS
],
3620 bitmask
[0] = FATTR4_WORD0_SUPPORTED_ATTRS
|
3621 FATTR4_WORD0_FH_EXPIRE_TYPE
|
3622 FATTR4_WORD0_LINK_SUPPORT
|
3623 FATTR4_WORD0_SYMLINK_SUPPORT
|
3624 FATTR4_WORD0_ACLSUPPORT
;
3626 bitmask
[2] = FATTR4_WORD2_SUPPATTR_EXCLCREAT
;
3628 status
= nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
3630 /* Sanity check the server answers */
3631 switch (minorversion
) {
3633 res
.attr_bitmask
[1] &= FATTR4_WORD1_NFS40_MASK
;
3634 res
.attr_bitmask
[2] = 0;
3637 res
.attr_bitmask
[2] &= FATTR4_WORD2_NFS41_MASK
;
3640 res
.attr_bitmask
[2] &= FATTR4_WORD2_NFS42_MASK
;
3642 memcpy(server
->attr_bitmask
, res
.attr_bitmask
, sizeof(server
->attr_bitmask
));
3643 server
->caps
&= ~(NFS_CAP_ACLS
|NFS_CAP_HARDLINKS
|
3644 NFS_CAP_SYMLINKS
|NFS_CAP_FILEID
|
3645 NFS_CAP_MODE
|NFS_CAP_NLINK
|NFS_CAP_OWNER
|
3646 NFS_CAP_OWNER_GROUP
|NFS_CAP_ATIME
|
3647 NFS_CAP_CTIME
|NFS_CAP_MTIME
|
3648 NFS_CAP_SECURITY_LABEL
);
3649 if (res
.attr_bitmask
[0] & FATTR4_WORD0_ACL
&&
3650 res
.acl_bitmask
& ACL4_SUPPORT_ALLOW_ACL
)
3651 server
->caps
|= NFS_CAP_ACLS
;
3652 if (res
.has_links
!= 0)
3653 server
->caps
|= NFS_CAP_HARDLINKS
;
3654 if (res
.has_symlinks
!= 0)
3655 server
->caps
|= NFS_CAP_SYMLINKS
;
3656 if (res
.attr_bitmask
[0] & FATTR4_WORD0_FILEID
)
3657 server
->caps
|= NFS_CAP_FILEID
;
3658 if (res
.attr_bitmask
[1] & FATTR4_WORD1_MODE
)
3659 server
->caps
|= NFS_CAP_MODE
;
3660 if (res
.attr_bitmask
[1] & FATTR4_WORD1_NUMLINKS
)
3661 server
->caps
|= NFS_CAP_NLINK
;
3662 if (res
.attr_bitmask
[1] & FATTR4_WORD1_OWNER
)
3663 server
->caps
|= NFS_CAP_OWNER
;
3664 if (res
.attr_bitmask
[1] & FATTR4_WORD1_OWNER_GROUP
)
3665 server
->caps
|= NFS_CAP_OWNER_GROUP
;
3666 if (res
.attr_bitmask
[1] & FATTR4_WORD1_TIME_ACCESS
)
3667 server
->caps
|= NFS_CAP_ATIME
;
3668 if (res
.attr_bitmask
[1] & FATTR4_WORD1_TIME_METADATA
)
3669 server
->caps
|= NFS_CAP_CTIME
;
3670 if (res
.attr_bitmask
[1] & FATTR4_WORD1_TIME_MODIFY
)
3671 server
->caps
|= NFS_CAP_MTIME
;
3672 #ifdef CONFIG_NFS_V4_SECURITY_LABEL
3673 if (res
.attr_bitmask
[2] & FATTR4_WORD2_SECURITY_LABEL
)
3674 server
->caps
|= NFS_CAP_SECURITY_LABEL
;
3676 memcpy(server
->attr_bitmask_nl
, res
.attr_bitmask
,
3677 sizeof(server
->attr_bitmask
));
3678 server
->attr_bitmask_nl
[2] &= ~FATTR4_WORD2_SECURITY_LABEL
;
3680 memcpy(server
->cache_consistency_bitmask
, res
.attr_bitmask
, sizeof(server
->cache_consistency_bitmask
));
3681 server
->cache_consistency_bitmask
[0] &= FATTR4_WORD0_CHANGE
|FATTR4_WORD0_SIZE
;
3682 server
->cache_consistency_bitmask
[1] &= FATTR4_WORD1_TIME_METADATA
|FATTR4_WORD1_TIME_MODIFY
;
3683 server
->cache_consistency_bitmask
[2] = 0;
3685 /* Avoid a regression due to buggy server */
3686 for (i
= 0; i
< ARRAY_SIZE(res
.exclcreat_bitmask
); i
++)
3687 res
.exclcreat_bitmask
[i
] &= res
.attr_bitmask
[i
];
3688 memcpy(server
->exclcreat_bitmask
, res
.exclcreat_bitmask
,
3689 sizeof(server
->exclcreat_bitmask
));
3691 server
->acl_bitmask
= res
.acl_bitmask
;
3692 server
->fh_expire_type
= res
.fh_expire_type
;
3698 int nfs4_server_capabilities(struct nfs_server
*server
, struct nfs_fh
*fhandle
)
3700 struct nfs4_exception exception
= {
3701 .interruptible
= true,
3705 err
= nfs4_handle_exception(server
,
3706 _nfs4_server_capabilities(server
, fhandle
),
3708 } while (exception
.retry
);
3712 static int _nfs4_lookup_root(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
3713 struct nfs_fsinfo
*info
)
3716 struct nfs4_lookup_root_arg args
= {
3719 struct nfs4_lookup_res res
= {
3721 .fattr
= info
->fattr
,
3724 struct rpc_message msg
= {
3725 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOOKUP_ROOT
],
3730 bitmask
[0] = nfs4_fattr_bitmap
[0];
3731 bitmask
[1] = nfs4_fattr_bitmap
[1];
3733 * Process the label in the upcoming getfattr
3735 bitmask
[2] = nfs4_fattr_bitmap
[2] & ~FATTR4_WORD2_SECURITY_LABEL
;
3737 nfs_fattr_init(info
->fattr
);
3738 return nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
3741 static int nfs4_lookup_root(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
3742 struct nfs_fsinfo
*info
)
3744 struct nfs4_exception exception
= {
3745 .interruptible
= true,
3749 err
= _nfs4_lookup_root(server
, fhandle
, info
);
3750 trace_nfs4_lookup_root(server
, fhandle
, info
->fattr
, err
);
3753 case -NFS4ERR_WRONGSEC
:
3756 err
= nfs4_handle_exception(server
, err
, &exception
);
3758 } while (exception
.retry
);
3763 static int nfs4_lookup_root_sec(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
3764 struct nfs_fsinfo
*info
, rpc_authflavor_t flavor
)
3766 struct rpc_auth_create_args auth_args
= {
3767 .pseudoflavor
= flavor
,
3769 struct rpc_auth
*auth
;
3771 auth
= rpcauth_create(&auth_args
, server
->client
);
3774 return nfs4_lookup_root(server
, fhandle
, info
);
3778 * Retry pseudoroot lookup with various security flavors. We do this when:
3780 * NFSv4.0: the PUTROOTFH operation returns NFS4ERR_WRONGSEC
3781 * NFSv4.1: the server does not support the SECINFO_NO_NAME operation
3783 * Returns zero on success, or a negative NFS4ERR value, or a
3784 * negative errno value.
3786 static int nfs4_find_root_sec(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
3787 struct nfs_fsinfo
*info
)
3789 /* Per 3530bis 15.33.5 */
3790 static const rpc_authflavor_t flav_array
[] = {
3794 RPC_AUTH_UNIX
, /* courtesy */
3797 int status
= -EPERM
;
3800 if (server
->auth_info
.flavor_len
> 0) {
3801 /* try each flavor specified by user */
3802 for (i
= 0; i
< server
->auth_info
.flavor_len
; i
++) {
3803 status
= nfs4_lookup_root_sec(server
, fhandle
, info
,
3804 server
->auth_info
.flavors
[i
]);
3805 if (status
== -NFS4ERR_WRONGSEC
|| status
== -EACCES
)
3810 /* no flavors specified by user, try default list */
3811 for (i
= 0; i
< ARRAY_SIZE(flav_array
); i
++) {
3812 status
= nfs4_lookup_root_sec(server
, fhandle
, info
,
3814 if (status
== -NFS4ERR_WRONGSEC
|| status
== -EACCES
)
3821 * -EACCES could mean that the user doesn't have correct permissions
3822 * to access the mount. It could also mean that we tried to mount
3823 * with a gss auth flavor, but rpc.gssd isn't running. Either way,
3824 * existing mount programs don't handle -EACCES very well so it should
3825 * be mapped to -EPERM instead.
3827 if (status
== -EACCES
)
3833 * nfs4_proc_get_rootfh - get file handle for server's pseudoroot
3834 * @server: initialized nfs_server handle
3835 * @fhandle: we fill in the pseudo-fs root file handle
3836 * @info: we fill in an FSINFO struct
3837 * @auth_probe: probe the auth flavours
3839 * Returns zero on success, or a negative errno.
3841 int nfs4_proc_get_rootfh(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
3842 struct nfs_fsinfo
*info
,
3848 status
= nfs4_lookup_root(server
, fhandle
, info
);
3850 if (auth_probe
|| status
== NFS4ERR_WRONGSEC
)
3851 status
= server
->nfs_client
->cl_mvops
->find_root_sec(server
,
3855 status
= nfs4_server_capabilities(server
, fhandle
);
3857 status
= nfs4_do_fsinfo(server
, fhandle
, info
);
3859 return nfs4_map_errors(status
);
3862 static int nfs4_proc_get_root(struct nfs_server
*server
, struct nfs_fh
*mntfh
,
3863 struct nfs_fsinfo
*info
)
3866 struct nfs_fattr
*fattr
= info
->fattr
;
3867 struct nfs4_label
*label
= NULL
;
3869 error
= nfs4_server_capabilities(server
, mntfh
);
3871 dprintk("nfs4_get_root: getcaps error = %d\n", -error
);
3875 label
= nfs4_label_alloc(server
, GFP_KERNEL
);
3877 return PTR_ERR(label
);
3879 error
= nfs4_proc_getattr(server
, mntfh
, fattr
, label
, NULL
);
3881 dprintk("nfs4_get_root: getattr error = %d\n", -error
);
3882 goto err_free_label
;
3885 if (fattr
->valid
& NFS_ATTR_FATTR_FSID
&&
3886 !nfs_fsid_equal(&server
->fsid
, &fattr
->fsid
))
3887 memcpy(&server
->fsid
, &fattr
->fsid
, sizeof(server
->fsid
));
3890 nfs4_label_free(label
);
3896 * Get locations and (maybe) other attributes of a referral.
3897 * Note that we'll actually follow the referral later when
3898 * we detect fsid mismatch in inode revalidation
3900 static int nfs4_get_referral(struct rpc_clnt
*client
, struct inode
*dir
,
3901 const struct qstr
*name
, struct nfs_fattr
*fattr
,
3902 struct nfs_fh
*fhandle
)
3904 int status
= -ENOMEM
;
3905 struct page
*page
= NULL
;
3906 struct nfs4_fs_locations
*locations
= NULL
;
3908 page
= alloc_page(GFP_KERNEL
);
3911 locations
= kmalloc(sizeof(struct nfs4_fs_locations
), GFP_KERNEL
);
3912 if (locations
== NULL
)
3915 status
= nfs4_proc_fs_locations(client
, dir
, name
, locations
, page
);
3920 * If the fsid didn't change, this is a migration event, not a
3921 * referral. Cause us to drop into the exception handler, which
3922 * will kick off migration recovery.
3924 if (nfs_fsid_equal(&NFS_SERVER(dir
)->fsid
, &locations
->fattr
.fsid
)) {
3925 dprintk("%s: server did not return a different fsid for"
3926 " a referral at %s\n", __func__
, name
->name
);
3927 status
= -NFS4ERR_MOVED
;
3930 /* Fixup attributes for the nfs_lookup() call to nfs_fhget() */
3931 nfs_fixup_referral_attributes(&locations
->fattr
);
3933 /* replace the lookup nfs_fattr with the locations nfs_fattr */
3934 memcpy(fattr
, &locations
->fattr
, sizeof(struct nfs_fattr
));
3935 memset(fhandle
, 0, sizeof(struct nfs_fh
));
3943 static int _nfs4_proc_getattr(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
3944 struct nfs_fattr
*fattr
, struct nfs4_label
*label
,
3945 struct inode
*inode
)
3947 __u32 bitmask
[NFS4_BITMASK_SZ
];
3948 struct nfs4_getattr_arg args
= {
3952 struct nfs4_getattr_res res
= {
3957 struct rpc_message msg
= {
3958 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GETATTR
],
3963 nfs4_bitmap_copy_adjust(bitmask
, nfs4_bitmask(server
, label
), inode
);
3965 nfs_fattr_init(fattr
);
3966 return nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
3969 static int nfs4_proc_getattr(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
3970 struct nfs_fattr
*fattr
, struct nfs4_label
*label
,
3971 struct inode
*inode
)
3973 struct nfs4_exception exception
= {
3974 .interruptible
= true,
3978 err
= _nfs4_proc_getattr(server
, fhandle
, fattr
, label
, inode
);
3979 trace_nfs4_getattr(server
, fhandle
, fattr
, err
);
3980 err
= nfs4_handle_exception(server
, err
,
3982 } while (exception
.retry
);
3987 * The file is not closed if it is opened due to the a request to change
3988 * the size of the file. The open call will not be needed once the
3989 * VFS layer lookup-intents are implemented.
3991 * Close is called when the inode is destroyed.
3992 * If we haven't opened the file for O_WRONLY, we
3993 * need to in the size_change case to obtain a stateid.
3996 * Because OPEN is always done by name in nfsv4, it is
3997 * possible that we opened a different file by the same
3998 * name. We can recognize this race condition, but we
3999 * can't do anything about it besides returning an error.
4001 * This will be fixed with VFS changes (lookup-intent).
4004 nfs4_proc_setattr(struct dentry
*dentry
, struct nfs_fattr
*fattr
,
4005 struct iattr
*sattr
)
4007 struct inode
*inode
= d_inode(dentry
);
4008 const struct cred
*cred
= NULL
;
4009 struct nfs_open_context
*ctx
= NULL
;
4010 struct nfs4_label
*label
= NULL
;
4013 if (pnfs_ld_layoutret_on_setattr(inode
) &&
4014 sattr
->ia_valid
& ATTR_SIZE
&&
4015 sattr
->ia_size
< i_size_read(inode
))
4016 pnfs_commit_and_return_layout(inode
);
4018 nfs_fattr_init(fattr
);
4020 /* Deal with open(O_TRUNC) */
4021 if (sattr
->ia_valid
& ATTR_OPEN
)
4022 sattr
->ia_valid
&= ~(ATTR_MTIME
|ATTR_CTIME
);
4024 /* Optimization: if the end result is no change, don't RPC */
4025 if ((sattr
->ia_valid
& ~(ATTR_FILE
|ATTR_OPEN
)) == 0)
4028 /* Search for an existing open(O_WRITE) file */
4029 if (sattr
->ia_valid
& ATTR_FILE
) {
4031 ctx
= nfs_file_open_context(sattr
->ia_file
);
4036 label
= nfs4_label_alloc(NFS_SERVER(inode
), GFP_KERNEL
);
4038 return PTR_ERR(label
);
4040 /* Return any delegations if we're going to change ACLs */
4041 if ((sattr
->ia_valid
& (ATTR_MODE
|ATTR_UID
|ATTR_GID
)) != 0)
4042 nfs4_inode_make_writeable(inode
);
4044 status
= nfs4_do_setattr(inode
, cred
, fattr
, sattr
, ctx
, NULL
, label
);
4046 nfs_setattr_update_inode(inode
, sattr
, fattr
);
4047 nfs_setsecurity(inode
, fattr
, label
);
4049 nfs4_label_free(label
);
4053 static int _nfs4_proc_lookup(struct rpc_clnt
*clnt
, struct inode
*dir
,
4054 const struct qstr
*name
, struct nfs_fh
*fhandle
,
4055 struct nfs_fattr
*fattr
, struct nfs4_label
*label
)
4057 struct nfs_server
*server
= NFS_SERVER(dir
);
4059 struct nfs4_lookup_arg args
= {
4060 .bitmask
= server
->attr_bitmask
,
4061 .dir_fh
= NFS_FH(dir
),
4064 struct nfs4_lookup_res res
= {
4070 struct rpc_message msg
= {
4071 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOOKUP
],
4076 args
.bitmask
= nfs4_bitmask(server
, label
);
4078 nfs_fattr_init(fattr
);
4080 dprintk("NFS call lookup %s\n", name
->name
);
4081 status
= nfs4_call_sync(clnt
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
4082 dprintk("NFS reply lookup: %d\n", status
);
4086 static void nfs_fixup_secinfo_attributes(struct nfs_fattr
*fattr
)
4088 fattr
->valid
|= NFS_ATTR_FATTR_TYPE
| NFS_ATTR_FATTR_MODE
|
4089 NFS_ATTR_FATTR_NLINK
| NFS_ATTR_FATTR_MOUNTPOINT
;
4090 fattr
->mode
= S_IFDIR
| S_IRUGO
| S_IXUGO
;
4094 static int nfs4_proc_lookup_common(struct rpc_clnt
**clnt
, struct inode
*dir
,
4095 const struct qstr
*name
, struct nfs_fh
*fhandle
,
4096 struct nfs_fattr
*fattr
, struct nfs4_label
*label
)
4098 struct nfs4_exception exception
= {
4099 .interruptible
= true,
4101 struct rpc_clnt
*client
= *clnt
;
4104 err
= _nfs4_proc_lookup(client
, dir
, name
, fhandle
, fattr
, label
);
4105 trace_nfs4_lookup(dir
, name
, err
);
4107 case -NFS4ERR_BADNAME
:
4110 case -NFS4ERR_MOVED
:
4111 err
= nfs4_get_referral(client
, dir
, name
, fattr
, fhandle
);
4112 if (err
== -NFS4ERR_MOVED
)
4113 err
= nfs4_handle_exception(NFS_SERVER(dir
), err
, &exception
);
4115 case -NFS4ERR_WRONGSEC
:
4117 if (client
!= *clnt
)
4119 client
= nfs4_negotiate_security(client
, dir
, name
);
4121 return PTR_ERR(client
);
4123 exception
.retry
= 1;
4126 err
= nfs4_handle_exception(NFS_SERVER(dir
), err
, &exception
);
4128 } while (exception
.retry
);
4133 else if (client
!= *clnt
)
4134 rpc_shutdown_client(client
);
4139 static int nfs4_proc_lookup(struct inode
*dir
, const struct qstr
*name
,
4140 struct nfs_fh
*fhandle
, struct nfs_fattr
*fattr
,
4141 struct nfs4_label
*label
)
4144 struct rpc_clnt
*client
= NFS_CLIENT(dir
);
4146 status
= nfs4_proc_lookup_common(&client
, dir
, name
, fhandle
, fattr
, label
);
4147 if (client
!= NFS_CLIENT(dir
)) {
4148 rpc_shutdown_client(client
);
4149 nfs_fixup_secinfo_attributes(fattr
);
4155 nfs4_proc_lookup_mountpoint(struct inode
*dir
, const struct qstr
*name
,
4156 struct nfs_fh
*fhandle
, struct nfs_fattr
*fattr
)
4158 struct rpc_clnt
*client
= NFS_CLIENT(dir
);
4161 status
= nfs4_proc_lookup_common(&client
, dir
, name
, fhandle
, fattr
, NULL
);
4163 return ERR_PTR(status
);
4164 return (client
== NFS_CLIENT(dir
)) ? rpc_clone_client(client
) : client
;
4167 static int _nfs4_proc_lookupp(struct inode
*inode
,
4168 struct nfs_fh
*fhandle
, struct nfs_fattr
*fattr
,
4169 struct nfs4_label
*label
)
4171 struct rpc_clnt
*clnt
= NFS_CLIENT(inode
);
4172 struct nfs_server
*server
= NFS_SERVER(inode
);
4174 struct nfs4_lookupp_arg args
= {
4175 .bitmask
= server
->attr_bitmask
,
4176 .fh
= NFS_FH(inode
),
4178 struct nfs4_lookupp_res res
= {
4184 struct rpc_message msg
= {
4185 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOOKUPP
],
4190 args
.bitmask
= nfs4_bitmask(server
, label
);
4192 nfs_fattr_init(fattr
);
4194 dprintk("NFS call lookupp ino=0x%lx\n", inode
->i_ino
);
4195 status
= nfs4_call_sync(clnt
, server
, &msg
, &args
.seq_args
,
4197 dprintk("NFS reply lookupp: %d\n", status
);
4201 static int nfs4_proc_lookupp(struct inode
*inode
, struct nfs_fh
*fhandle
,
4202 struct nfs_fattr
*fattr
, struct nfs4_label
*label
)
4204 struct nfs4_exception exception
= {
4205 .interruptible
= true,
4209 err
= _nfs4_proc_lookupp(inode
, fhandle
, fattr
, label
);
4210 trace_nfs4_lookupp(inode
, err
);
4211 err
= nfs4_handle_exception(NFS_SERVER(inode
), err
,
4213 } while (exception
.retry
);
4217 static int _nfs4_proc_access(struct inode
*inode
, struct nfs_access_entry
*entry
)
4219 struct nfs_server
*server
= NFS_SERVER(inode
);
4220 struct nfs4_accessargs args
= {
4221 .fh
= NFS_FH(inode
),
4222 .access
= entry
->mask
,
4224 struct nfs4_accessres res
= {
4227 struct rpc_message msg
= {
4228 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_ACCESS
],
4231 .rpc_cred
= entry
->cred
,
4235 if (!nfs4_have_delegation(inode
, FMODE_READ
)) {
4236 res
.fattr
= nfs_alloc_fattr();
4237 if (res
.fattr
== NULL
)
4239 args
.bitmask
= server
->cache_consistency_bitmask
;
4241 status
= nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
4243 nfs_access_set_mask(entry
, res
.access
);
4245 nfs_refresh_inode(inode
, res
.fattr
);
4247 nfs_free_fattr(res
.fattr
);
4251 static int nfs4_proc_access(struct inode
*inode
, struct nfs_access_entry
*entry
)
4253 struct nfs4_exception exception
= {
4254 .interruptible
= true,
4258 err
= _nfs4_proc_access(inode
, entry
);
4259 trace_nfs4_access(inode
, err
);
4260 err
= nfs4_handle_exception(NFS_SERVER(inode
), err
,
4262 } while (exception
.retry
);
4267 * TODO: For the time being, we don't try to get any attributes
4268 * along with any of the zero-copy operations READ, READDIR,
4271 * In the case of the first three, we want to put the GETATTR
4272 * after the read-type operation -- this is because it is hard
4273 * to predict the length of a GETATTR response in v4, and thus
4274 * align the READ data correctly. This means that the GETATTR
4275 * may end up partially falling into the page cache, and we should
4276 * shift it into the 'tail' of the xdr_buf before processing.
4277 * To do this efficiently, we need to know the total length
4278 * of data received, which doesn't seem to be available outside
4281 * In the case of WRITE, we also want to put the GETATTR after
4282 * the operation -- in this case because we want to make sure
4283 * we get the post-operation mtime and size.
4285 * Both of these changes to the XDR layer would in fact be quite
4286 * minor, but I decided to leave them for a subsequent patch.
4288 static int _nfs4_proc_readlink(struct inode
*inode
, struct page
*page
,
4289 unsigned int pgbase
, unsigned int pglen
)
4291 struct nfs4_readlink args
= {
4292 .fh
= NFS_FH(inode
),
4297 struct nfs4_readlink_res res
;
4298 struct rpc_message msg
= {
4299 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_READLINK
],
4304 return nfs4_call_sync(NFS_SERVER(inode
)->client
, NFS_SERVER(inode
), &msg
, &args
.seq_args
, &res
.seq_res
, 0);
4307 static int nfs4_proc_readlink(struct inode
*inode
, struct page
*page
,
4308 unsigned int pgbase
, unsigned int pglen
)
4310 struct nfs4_exception exception
= {
4311 .interruptible
= true,
4315 err
= _nfs4_proc_readlink(inode
, page
, pgbase
, pglen
);
4316 trace_nfs4_readlink(inode
, err
);
4317 err
= nfs4_handle_exception(NFS_SERVER(inode
), err
,
4319 } while (exception
.retry
);
4324 * This is just for mknod. open(O_CREAT) will always do ->open_context().
4327 nfs4_proc_create(struct inode
*dir
, struct dentry
*dentry
, struct iattr
*sattr
,
4330 struct nfs_server
*server
= NFS_SERVER(dir
);
4331 struct nfs4_label l
, *ilabel
= NULL
;
4332 struct nfs_open_context
*ctx
;
4333 struct nfs4_state
*state
;
4336 ctx
= alloc_nfs_open_context(dentry
, FMODE_READ
, NULL
);
4338 return PTR_ERR(ctx
);
4340 ilabel
= nfs4_label_init_security(dir
, dentry
, sattr
, &l
);
4342 if (!(server
->attr_bitmask
[2] & FATTR4_WORD2_MODE_UMASK
))
4343 sattr
->ia_mode
&= ~current_umask();
4344 state
= nfs4_do_open(dir
, ctx
, flags
, sattr
, ilabel
, NULL
);
4345 if (IS_ERR(state
)) {
4346 status
= PTR_ERR(state
);
4350 nfs4_label_release_security(ilabel
);
4351 put_nfs_open_context(ctx
);
4356 _nfs4_proc_remove(struct inode
*dir
, const struct qstr
*name
, u32 ftype
)
4358 struct nfs_server
*server
= NFS_SERVER(dir
);
4359 struct nfs_removeargs args
= {
4363 struct nfs_removeres res
= {
4366 struct rpc_message msg
= {
4367 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_REMOVE
],
4371 unsigned long timestamp
= jiffies
;
4374 status
= nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 1);
4376 spin_lock(&dir
->i_lock
);
4377 update_changeattr_locked(dir
, &res
.cinfo
, timestamp
, 0);
4378 /* Removing a directory decrements nlink in the parent */
4379 if (ftype
== NF4DIR
&& dir
->i_nlink
> 2)
4380 nfs4_dec_nlink_locked(dir
);
4381 spin_unlock(&dir
->i_lock
);
4386 static int nfs4_proc_remove(struct inode
*dir
, struct dentry
*dentry
)
4388 struct nfs4_exception exception
= {
4389 .interruptible
= true,
4391 struct inode
*inode
= d_inode(dentry
);
4395 if (inode
->i_nlink
== 1)
4396 nfs4_inode_return_delegation(inode
);
4398 nfs4_inode_make_writeable(inode
);
4401 err
= _nfs4_proc_remove(dir
, &dentry
->d_name
, NF4REG
);
4402 trace_nfs4_remove(dir
, &dentry
->d_name
, err
);
4403 err
= nfs4_handle_exception(NFS_SERVER(dir
), err
,
4405 } while (exception
.retry
);
4409 static int nfs4_proc_rmdir(struct inode
*dir
, const struct qstr
*name
)
4411 struct nfs4_exception exception
= {
4412 .interruptible
= true,
4417 err
= _nfs4_proc_remove(dir
, name
, NF4DIR
);
4418 trace_nfs4_remove(dir
, name
, err
);
4419 err
= nfs4_handle_exception(NFS_SERVER(dir
), err
,
4421 } while (exception
.retry
);
4425 static void nfs4_proc_unlink_setup(struct rpc_message
*msg
,
4426 struct dentry
*dentry
,
4427 struct inode
*inode
)
4429 struct nfs_removeargs
*args
= msg
->rpc_argp
;
4430 struct nfs_removeres
*res
= msg
->rpc_resp
;
4432 res
->server
= NFS_SB(dentry
->d_sb
);
4433 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_REMOVE
];
4434 nfs4_init_sequence(&args
->seq_args
, &res
->seq_res
, 1, 0);
4436 nfs_fattr_init(res
->dir_attr
);
4439 nfs4_inode_return_delegation(inode
);
4442 static void nfs4_proc_unlink_rpc_prepare(struct rpc_task
*task
, struct nfs_unlinkdata
*data
)
4444 nfs4_setup_sequence(NFS_SB(data
->dentry
->d_sb
)->nfs_client
,
4445 &data
->args
.seq_args
,
4450 static int nfs4_proc_unlink_done(struct rpc_task
*task
, struct inode
*dir
)
4452 struct nfs_unlinkdata
*data
= task
->tk_calldata
;
4453 struct nfs_removeres
*res
= &data
->res
;
4455 if (!nfs4_sequence_done(task
, &res
->seq_res
))
4457 if (nfs4_async_handle_error(task
, res
->server
, NULL
,
4458 &data
->timeout
) == -EAGAIN
)
4460 if (task
->tk_status
== 0)
4461 update_changeattr(dir
, &res
->cinfo
,
4462 res
->dir_attr
->time_start
, 0);
4466 static void nfs4_proc_rename_setup(struct rpc_message
*msg
,
4467 struct dentry
*old_dentry
,
4468 struct dentry
*new_dentry
)
4470 struct nfs_renameargs
*arg
= msg
->rpc_argp
;
4471 struct nfs_renameres
*res
= msg
->rpc_resp
;
4472 struct inode
*old_inode
= d_inode(old_dentry
);
4473 struct inode
*new_inode
= d_inode(new_dentry
);
4476 nfs4_inode_make_writeable(old_inode
);
4478 nfs4_inode_return_delegation(new_inode
);
4479 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RENAME
];
4480 res
->server
= NFS_SB(old_dentry
->d_sb
);
4481 nfs4_init_sequence(&arg
->seq_args
, &res
->seq_res
, 1, 0);
4484 static void nfs4_proc_rename_rpc_prepare(struct rpc_task
*task
, struct nfs_renamedata
*data
)
4486 nfs4_setup_sequence(NFS_SERVER(data
->old_dir
)->nfs_client
,
4487 &data
->args
.seq_args
,
4492 static int nfs4_proc_rename_done(struct rpc_task
*task
, struct inode
*old_dir
,
4493 struct inode
*new_dir
)
4495 struct nfs_renamedata
*data
= task
->tk_calldata
;
4496 struct nfs_renameres
*res
= &data
->res
;
4498 if (!nfs4_sequence_done(task
, &res
->seq_res
))
4500 if (nfs4_async_handle_error(task
, res
->server
, NULL
, &data
->timeout
) == -EAGAIN
)
4503 if (task
->tk_status
== 0) {
4504 if (new_dir
!= old_dir
) {
4505 /* Note: If we moved a directory, nlink will change */
4506 update_changeattr(old_dir
, &res
->old_cinfo
,
4507 res
->old_fattr
->time_start
,
4508 NFS_INO_INVALID_OTHER
);
4509 update_changeattr(new_dir
, &res
->new_cinfo
,
4510 res
->new_fattr
->time_start
,
4511 NFS_INO_INVALID_OTHER
);
4513 update_changeattr(old_dir
, &res
->old_cinfo
,
4514 res
->old_fattr
->time_start
,
4520 static int _nfs4_proc_link(struct inode
*inode
, struct inode
*dir
, const struct qstr
*name
)
4522 struct nfs_server
*server
= NFS_SERVER(inode
);
4523 __u32 bitmask
[NFS4_BITMASK_SZ
];
4524 struct nfs4_link_arg arg
= {
4525 .fh
= NFS_FH(inode
),
4526 .dir_fh
= NFS_FH(dir
),
4530 struct nfs4_link_res res
= {
4534 struct rpc_message msg
= {
4535 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LINK
],
4539 int status
= -ENOMEM
;
4541 res
.fattr
= nfs_alloc_fattr();
4542 if (res
.fattr
== NULL
)
4545 res
.label
= nfs4_label_alloc(server
, GFP_KERNEL
);
4546 if (IS_ERR(res
.label
)) {
4547 status
= PTR_ERR(res
.label
);
4551 nfs4_inode_make_writeable(inode
);
4552 nfs4_bitmap_copy_adjust_setattr(bitmask
, nfs4_bitmask(server
, res
.label
), inode
);
4554 status
= nfs4_call_sync(server
->client
, server
, &msg
, &arg
.seq_args
, &res
.seq_res
, 1);
4556 update_changeattr(dir
, &res
.cinfo
, res
.fattr
->time_start
, 0);
4557 status
= nfs_post_op_update_inode(inode
, res
.fattr
);
4559 nfs_setsecurity(inode
, res
.fattr
, res
.label
);
4563 nfs4_label_free(res
.label
);
4566 nfs_free_fattr(res
.fattr
);
4570 static int nfs4_proc_link(struct inode
*inode
, struct inode
*dir
, const struct qstr
*name
)
4572 struct nfs4_exception exception
= {
4573 .interruptible
= true,
4577 err
= nfs4_handle_exception(NFS_SERVER(inode
),
4578 _nfs4_proc_link(inode
, dir
, name
),
4580 } while (exception
.retry
);
4584 struct nfs4_createdata
{
4585 struct rpc_message msg
;
4586 struct nfs4_create_arg arg
;
4587 struct nfs4_create_res res
;
4589 struct nfs_fattr fattr
;
4590 struct nfs4_label
*label
;
4593 static struct nfs4_createdata
*nfs4_alloc_createdata(struct inode
*dir
,
4594 const struct qstr
*name
, struct iattr
*sattr
, u32 ftype
)
4596 struct nfs4_createdata
*data
;
4598 data
= kzalloc(sizeof(*data
), GFP_KERNEL
);
4600 struct nfs_server
*server
= NFS_SERVER(dir
);
4602 data
->label
= nfs4_label_alloc(server
, GFP_KERNEL
);
4603 if (IS_ERR(data
->label
))
4606 data
->msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_CREATE
];
4607 data
->msg
.rpc_argp
= &data
->arg
;
4608 data
->msg
.rpc_resp
= &data
->res
;
4609 data
->arg
.dir_fh
= NFS_FH(dir
);
4610 data
->arg
.server
= server
;
4611 data
->arg
.name
= name
;
4612 data
->arg
.attrs
= sattr
;
4613 data
->arg
.ftype
= ftype
;
4614 data
->arg
.bitmask
= nfs4_bitmask(server
, data
->label
);
4615 data
->arg
.umask
= current_umask();
4616 data
->res
.server
= server
;
4617 data
->res
.fh
= &data
->fh
;
4618 data
->res
.fattr
= &data
->fattr
;
4619 data
->res
.label
= data
->label
;
4620 nfs_fattr_init(data
->res
.fattr
);
4628 static int nfs4_do_create(struct inode
*dir
, struct dentry
*dentry
, struct nfs4_createdata
*data
)
4630 int status
= nfs4_call_sync(NFS_SERVER(dir
)->client
, NFS_SERVER(dir
), &data
->msg
,
4631 &data
->arg
.seq_args
, &data
->res
.seq_res
, 1);
4633 spin_lock(&dir
->i_lock
);
4634 update_changeattr_locked(dir
, &data
->res
.dir_cinfo
,
4635 data
->res
.fattr
->time_start
, 0);
4636 /* Creating a directory bumps nlink in the parent */
4637 if (data
->arg
.ftype
== NF4DIR
)
4638 nfs4_inc_nlink_locked(dir
);
4639 spin_unlock(&dir
->i_lock
);
4640 status
= nfs_instantiate(dentry
, data
->res
.fh
, data
->res
.fattr
, data
->res
.label
);
4645 static void nfs4_free_createdata(struct nfs4_createdata
*data
)
4647 nfs4_label_free(data
->label
);
4651 static int _nfs4_proc_symlink(struct inode
*dir
, struct dentry
*dentry
,
4652 struct page
*page
, unsigned int len
, struct iattr
*sattr
,
4653 struct nfs4_label
*label
)
4655 struct nfs4_createdata
*data
;
4656 int status
= -ENAMETOOLONG
;
4658 if (len
> NFS4_MAXPATHLEN
)
4662 data
= nfs4_alloc_createdata(dir
, &dentry
->d_name
, sattr
, NF4LNK
);
4666 data
->msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SYMLINK
];
4667 data
->arg
.u
.symlink
.pages
= &page
;
4668 data
->arg
.u
.symlink
.len
= len
;
4669 data
->arg
.label
= label
;
4671 status
= nfs4_do_create(dir
, dentry
, data
);
4673 nfs4_free_createdata(data
);
4678 static int nfs4_proc_symlink(struct inode
*dir
, struct dentry
*dentry
,
4679 struct page
*page
, unsigned int len
, struct iattr
*sattr
)
4681 struct nfs4_exception exception
= {
4682 .interruptible
= true,
4684 struct nfs4_label l
, *label
= NULL
;
4687 label
= nfs4_label_init_security(dir
, dentry
, sattr
, &l
);
4690 err
= _nfs4_proc_symlink(dir
, dentry
, page
, len
, sattr
, label
);
4691 trace_nfs4_symlink(dir
, &dentry
->d_name
, err
);
4692 err
= nfs4_handle_exception(NFS_SERVER(dir
), err
,
4694 } while (exception
.retry
);
4696 nfs4_label_release_security(label
);
4700 static int _nfs4_proc_mkdir(struct inode
*dir
, struct dentry
*dentry
,
4701 struct iattr
*sattr
, struct nfs4_label
*label
)
4703 struct nfs4_createdata
*data
;
4704 int status
= -ENOMEM
;
4706 data
= nfs4_alloc_createdata(dir
, &dentry
->d_name
, sattr
, NF4DIR
);
4710 data
->arg
.label
= label
;
4711 status
= nfs4_do_create(dir
, dentry
, data
);
4713 nfs4_free_createdata(data
);
4718 static int nfs4_proc_mkdir(struct inode
*dir
, struct dentry
*dentry
,
4719 struct iattr
*sattr
)
4721 struct nfs_server
*server
= NFS_SERVER(dir
);
4722 struct nfs4_exception exception
= {
4723 .interruptible
= true,
4725 struct nfs4_label l
, *label
= NULL
;
4728 label
= nfs4_label_init_security(dir
, dentry
, sattr
, &l
);
4730 if (!(server
->attr_bitmask
[2] & FATTR4_WORD2_MODE_UMASK
))
4731 sattr
->ia_mode
&= ~current_umask();
4733 err
= _nfs4_proc_mkdir(dir
, dentry
, sattr
, label
);
4734 trace_nfs4_mkdir(dir
, &dentry
->d_name
, err
);
4735 err
= nfs4_handle_exception(NFS_SERVER(dir
), err
,
4737 } while (exception
.retry
);
4738 nfs4_label_release_security(label
);
4743 static int _nfs4_proc_readdir(struct dentry
*dentry
, const struct cred
*cred
,
4744 u64 cookie
, struct page
**pages
, unsigned int count
, bool plus
)
4746 struct inode
*dir
= d_inode(dentry
);
4747 struct nfs4_readdir_arg args
= {
4752 .bitmask
= NFS_SERVER(d_inode(dentry
))->attr_bitmask
,
4755 struct nfs4_readdir_res res
;
4756 struct rpc_message msg
= {
4757 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_READDIR
],
4764 dprintk("%s: dentry = %pd2, cookie = %Lu\n", __func__
,
4766 (unsigned long long)cookie
);
4767 nfs4_setup_readdir(cookie
, NFS_I(dir
)->cookieverf
, dentry
, &args
);
4768 res
.pgbase
= args
.pgbase
;
4769 status
= nfs4_call_sync(NFS_SERVER(dir
)->client
, NFS_SERVER(dir
), &msg
, &args
.seq_args
, &res
.seq_res
, 0);
4771 memcpy(NFS_I(dir
)->cookieverf
, res
.verifier
.data
, NFS4_VERIFIER_SIZE
);
4772 status
+= args
.pgbase
;
4775 nfs_invalidate_atime(dir
);
4777 dprintk("%s: returns %d\n", __func__
, status
);
4781 static int nfs4_proc_readdir(struct dentry
*dentry
, const struct cred
*cred
,
4782 u64 cookie
, struct page
**pages
, unsigned int count
, bool plus
)
4784 struct nfs4_exception exception
= {
4785 .interruptible
= true,
4789 err
= _nfs4_proc_readdir(dentry
, cred
, cookie
,
4790 pages
, count
, plus
);
4791 trace_nfs4_readdir(d_inode(dentry
), err
);
4792 err
= nfs4_handle_exception(NFS_SERVER(d_inode(dentry
)), err
,
4794 } while (exception
.retry
);
4798 static int _nfs4_proc_mknod(struct inode
*dir
, struct dentry
*dentry
,
4799 struct iattr
*sattr
, struct nfs4_label
*label
, dev_t rdev
)
4801 struct nfs4_createdata
*data
;
4802 int mode
= sattr
->ia_mode
;
4803 int status
= -ENOMEM
;
4805 data
= nfs4_alloc_createdata(dir
, &dentry
->d_name
, sattr
, NF4SOCK
);
4810 data
->arg
.ftype
= NF4FIFO
;
4811 else if (S_ISBLK(mode
)) {
4812 data
->arg
.ftype
= NF4BLK
;
4813 data
->arg
.u
.device
.specdata1
= MAJOR(rdev
);
4814 data
->arg
.u
.device
.specdata2
= MINOR(rdev
);
4816 else if (S_ISCHR(mode
)) {
4817 data
->arg
.ftype
= NF4CHR
;
4818 data
->arg
.u
.device
.specdata1
= MAJOR(rdev
);
4819 data
->arg
.u
.device
.specdata2
= MINOR(rdev
);
4820 } else if (!S_ISSOCK(mode
)) {
4825 data
->arg
.label
= label
;
4826 status
= nfs4_do_create(dir
, dentry
, data
);
4828 nfs4_free_createdata(data
);
4833 static int nfs4_proc_mknod(struct inode
*dir
, struct dentry
*dentry
,
4834 struct iattr
*sattr
, dev_t rdev
)
4836 struct nfs_server
*server
= NFS_SERVER(dir
);
4837 struct nfs4_exception exception
= {
4838 .interruptible
= true,
4840 struct nfs4_label l
, *label
= NULL
;
4843 label
= nfs4_label_init_security(dir
, dentry
, sattr
, &l
);
4845 if (!(server
->attr_bitmask
[2] & FATTR4_WORD2_MODE_UMASK
))
4846 sattr
->ia_mode
&= ~current_umask();
4848 err
= _nfs4_proc_mknod(dir
, dentry
, sattr
, label
, rdev
);
4849 trace_nfs4_mknod(dir
, &dentry
->d_name
, err
);
4850 err
= nfs4_handle_exception(NFS_SERVER(dir
), err
,
4852 } while (exception
.retry
);
4854 nfs4_label_release_security(label
);
4859 static int _nfs4_proc_statfs(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
4860 struct nfs_fsstat
*fsstat
)
4862 struct nfs4_statfs_arg args
= {
4864 .bitmask
= server
->attr_bitmask
,
4866 struct nfs4_statfs_res res
= {
4869 struct rpc_message msg
= {
4870 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_STATFS
],
4875 nfs_fattr_init(fsstat
->fattr
);
4876 return nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
4879 static int nfs4_proc_statfs(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fsstat
*fsstat
)
4881 struct nfs4_exception exception
= {
4882 .interruptible
= true,
4886 err
= nfs4_handle_exception(server
,
4887 _nfs4_proc_statfs(server
, fhandle
, fsstat
),
4889 } while (exception
.retry
);
4893 static int _nfs4_do_fsinfo(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
4894 struct nfs_fsinfo
*fsinfo
)
4896 struct nfs4_fsinfo_arg args
= {
4898 .bitmask
= server
->attr_bitmask
,
4900 struct nfs4_fsinfo_res res
= {
4903 struct rpc_message msg
= {
4904 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_FSINFO
],
4909 return nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
4912 static int nfs4_do_fsinfo(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fsinfo
*fsinfo
)
4914 struct nfs4_exception exception
= {
4915 .interruptible
= true,
4917 unsigned long now
= jiffies
;
4921 err
= _nfs4_do_fsinfo(server
, fhandle
, fsinfo
);
4922 trace_nfs4_fsinfo(server
, fhandle
, fsinfo
->fattr
, err
);
4924 nfs4_set_lease_period(server
->nfs_client
,
4925 fsinfo
->lease_time
* HZ
,
4929 err
= nfs4_handle_exception(server
, err
, &exception
);
4930 } while (exception
.retry
);
4934 static int nfs4_proc_fsinfo(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fsinfo
*fsinfo
)
4938 nfs_fattr_init(fsinfo
->fattr
);
4939 error
= nfs4_do_fsinfo(server
, fhandle
, fsinfo
);
4941 /* block layout checks this! */
4942 server
->pnfs_blksize
= fsinfo
->blksize
;
4943 set_pnfs_layoutdriver(server
, fhandle
, fsinfo
);
4949 static int _nfs4_proc_pathconf(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
4950 struct nfs_pathconf
*pathconf
)
4952 struct nfs4_pathconf_arg args
= {
4954 .bitmask
= server
->attr_bitmask
,
4956 struct nfs4_pathconf_res res
= {
4957 .pathconf
= pathconf
,
4959 struct rpc_message msg
= {
4960 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_PATHCONF
],
4965 /* None of the pathconf attributes are mandatory to implement */
4966 if ((args
.bitmask
[0] & nfs4_pathconf_bitmap
[0]) == 0) {
4967 memset(pathconf
, 0, sizeof(*pathconf
));
4971 nfs_fattr_init(pathconf
->fattr
);
4972 return nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
4975 static int nfs4_proc_pathconf(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
4976 struct nfs_pathconf
*pathconf
)
4978 struct nfs4_exception exception
= {
4979 .interruptible
= true,
4984 err
= nfs4_handle_exception(server
,
4985 _nfs4_proc_pathconf(server
, fhandle
, pathconf
),
4987 } while (exception
.retry
);
4991 int nfs4_set_rw_stateid(nfs4_stateid
*stateid
,
4992 const struct nfs_open_context
*ctx
,
4993 const struct nfs_lock_context
*l_ctx
,
4996 return nfs4_select_rw_stateid(ctx
->state
, fmode
, l_ctx
, stateid
, NULL
);
4998 EXPORT_SYMBOL_GPL(nfs4_set_rw_stateid
);
5000 static bool nfs4_stateid_is_current(nfs4_stateid
*stateid
,
5001 const struct nfs_open_context
*ctx
,
5002 const struct nfs_lock_context
*l_ctx
,
5005 nfs4_stateid current_stateid
;
5007 /* If the current stateid represents a lost lock, then exit */
5008 if (nfs4_set_rw_stateid(¤t_stateid
, ctx
, l_ctx
, fmode
) == -EIO
)
5010 return nfs4_stateid_match(stateid
, ¤t_stateid
);
5013 static bool nfs4_error_stateid_expired(int err
)
5016 case -NFS4ERR_DELEG_REVOKED
:
5017 case -NFS4ERR_ADMIN_REVOKED
:
5018 case -NFS4ERR_BAD_STATEID
:
5019 case -NFS4ERR_STALE_STATEID
:
5020 case -NFS4ERR_OLD_STATEID
:
5021 case -NFS4ERR_OPENMODE
:
5022 case -NFS4ERR_EXPIRED
:
5028 static int nfs4_read_done_cb(struct rpc_task
*task
, struct nfs_pgio_header
*hdr
)
5030 struct nfs_server
*server
= NFS_SERVER(hdr
->inode
);
5032 trace_nfs4_read(hdr
, task
->tk_status
);
5033 if (task
->tk_status
< 0) {
5034 struct nfs4_exception exception
= {
5035 .inode
= hdr
->inode
,
5036 .state
= hdr
->args
.context
->state
,
5037 .stateid
= &hdr
->args
.stateid
,
5039 task
->tk_status
= nfs4_async_handle_exception(task
,
5040 server
, task
->tk_status
, &exception
);
5041 if (exception
.retry
) {
5042 rpc_restart_call_prepare(task
);
5047 if (task
->tk_status
> 0)
5048 renew_lease(server
, hdr
->timestamp
);
5052 static bool nfs4_read_stateid_changed(struct rpc_task
*task
,
5053 struct nfs_pgio_args
*args
)
5056 if (!nfs4_error_stateid_expired(task
->tk_status
) ||
5057 nfs4_stateid_is_current(&args
->stateid
,
5062 rpc_restart_call_prepare(task
);
5066 static int nfs4_read_done(struct rpc_task
*task
, struct nfs_pgio_header
*hdr
)
5069 dprintk("--> %s\n", __func__
);
5071 if (!nfs4_sequence_done(task
, &hdr
->res
.seq_res
))
5073 if (nfs4_read_stateid_changed(task
, &hdr
->args
))
5075 if (task
->tk_status
> 0)
5076 nfs_invalidate_atime(hdr
->inode
);
5077 return hdr
->pgio_done_cb
? hdr
->pgio_done_cb(task
, hdr
) :
5078 nfs4_read_done_cb(task
, hdr
);
5081 static void nfs4_proc_read_setup(struct nfs_pgio_header
*hdr
,
5082 struct rpc_message
*msg
)
5084 hdr
->timestamp
= jiffies
;
5085 if (!hdr
->pgio_done_cb
)
5086 hdr
->pgio_done_cb
= nfs4_read_done_cb
;
5087 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_READ
];
5088 nfs4_init_sequence(&hdr
->args
.seq_args
, &hdr
->res
.seq_res
, 0, 0);
5091 static int nfs4_proc_pgio_rpc_prepare(struct rpc_task
*task
,
5092 struct nfs_pgio_header
*hdr
)
5094 if (nfs4_setup_sequence(NFS_SERVER(hdr
->inode
)->nfs_client
,
5095 &hdr
->args
.seq_args
,
5099 if (nfs4_set_rw_stateid(&hdr
->args
.stateid
, hdr
->args
.context
,
5100 hdr
->args
.lock_context
,
5101 hdr
->rw_mode
) == -EIO
)
5103 if (unlikely(test_bit(NFS_CONTEXT_BAD
, &hdr
->args
.context
->flags
)))
5108 static int nfs4_write_done_cb(struct rpc_task
*task
,
5109 struct nfs_pgio_header
*hdr
)
5111 struct inode
*inode
= hdr
->inode
;
5113 trace_nfs4_write(hdr
, task
->tk_status
);
5114 if (task
->tk_status
< 0) {
5115 struct nfs4_exception exception
= {
5116 .inode
= hdr
->inode
,
5117 .state
= hdr
->args
.context
->state
,
5118 .stateid
= &hdr
->args
.stateid
,
5120 task
->tk_status
= nfs4_async_handle_exception(task
,
5121 NFS_SERVER(inode
), task
->tk_status
,
5123 if (exception
.retry
) {
5124 rpc_restart_call_prepare(task
);
5128 if (task
->tk_status
>= 0) {
5129 renew_lease(NFS_SERVER(inode
), hdr
->timestamp
);
5130 nfs_writeback_update_inode(hdr
);
5135 static bool nfs4_write_stateid_changed(struct rpc_task
*task
,
5136 struct nfs_pgio_args
*args
)
5139 if (!nfs4_error_stateid_expired(task
->tk_status
) ||
5140 nfs4_stateid_is_current(&args
->stateid
,
5145 rpc_restart_call_prepare(task
);
5149 static int nfs4_write_done(struct rpc_task
*task
, struct nfs_pgio_header
*hdr
)
5151 if (!nfs4_sequence_done(task
, &hdr
->res
.seq_res
))
5153 if (nfs4_write_stateid_changed(task
, &hdr
->args
))
5155 return hdr
->pgio_done_cb
? hdr
->pgio_done_cb(task
, hdr
) :
5156 nfs4_write_done_cb(task
, hdr
);
5160 bool nfs4_write_need_cache_consistency_data(struct nfs_pgio_header
*hdr
)
5162 /* Don't request attributes for pNFS or O_DIRECT writes */
5163 if (hdr
->ds_clp
!= NULL
|| hdr
->dreq
!= NULL
)
5165 /* Otherwise, request attributes if and only if we don't hold
5168 return nfs4_have_delegation(hdr
->inode
, FMODE_READ
) == 0;
5171 static void nfs4_proc_write_setup(struct nfs_pgio_header
*hdr
,
5172 struct rpc_message
*msg
,
5173 struct rpc_clnt
**clnt
)
5175 struct nfs_server
*server
= NFS_SERVER(hdr
->inode
);
5177 if (!nfs4_write_need_cache_consistency_data(hdr
)) {
5178 hdr
->args
.bitmask
= NULL
;
5179 hdr
->res
.fattr
= NULL
;
5181 hdr
->args
.bitmask
= server
->cache_consistency_bitmask
;
5183 if (!hdr
->pgio_done_cb
)
5184 hdr
->pgio_done_cb
= nfs4_write_done_cb
;
5185 hdr
->res
.server
= server
;
5186 hdr
->timestamp
= jiffies
;
5188 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_WRITE
];
5189 nfs4_init_sequence(&hdr
->args
.seq_args
, &hdr
->res
.seq_res
, 1, 0);
5190 nfs4_state_protect_write(server
->nfs_client
, clnt
, msg
, hdr
);
5193 static void nfs4_proc_commit_rpc_prepare(struct rpc_task
*task
, struct nfs_commit_data
*data
)
5195 nfs4_setup_sequence(NFS_SERVER(data
->inode
)->nfs_client
,
5196 &data
->args
.seq_args
,
5201 static int nfs4_commit_done_cb(struct rpc_task
*task
, struct nfs_commit_data
*data
)
5203 struct inode
*inode
= data
->inode
;
5205 trace_nfs4_commit(data
, task
->tk_status
);
5206 if (nfs4_async_handle_error(task
, NFS_SERVER(inode
),
5207 NULL
, NULL
) == -EAGAIN
) {
5208 rpc_restart_call_prepare(task
);
5214 static int nfs4_commit_done(struct rpc_task
*task
, struct nfs_commit_data
*data
)
5216 if (!nfs4_sequence_done(task
, &data
->res
.seq_res
))
5218 return data
->commit_done_cb(task
, data
);
5221 static void nfs4_proc_commit_setup(struct nfs_commit_data
*data
, struct rpc_message
*msg
,
5222 struct rpc_clnt
**clnt
)
5224 struct nfs_server
*server
= NFS_SERVER(data
->inode
);
5226 if (data
->commit_done_cb
== NULL
)
5227 data
->commit_done_cb
= nfs4_commit_done_cb
;
5228 data
->res
.server
= server
;
5229 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_COMMIT
];
5230 nfs4_init_sequence(&data
->args
.seq_args
, &data
->res
.seq_res
, 1, 0);
5231 nfs4_state_protect(server
->nfs_client
, NFS_SP4_MACH_CRED_COMMIT
, clnt
, msg
);
5234 static int _nfs4_proc_commit(struct file
*dst
, struct nfs_commitargs
*args
,
5235 struct nfs_commitres
*res
)
5237 struct inode
*dst_inode
= file_inode(dst
);
5238 struct nfs_server
*server
= NFS_SERVER(dst_inode
);
5239 struct rpc_message msg
= {
5240 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_COMMIT
],
5245 args
->fh
= NFS_FH(dst_inode
);
5246 return nfs4_call_sync(server
->client
, server
, &msg
,
5247 &args
->seq_args
, &res
->seq_res
, 1);
5250 int nfs4_proc_commit(struct file
*dst
, __u64 offset
, __u32 count
, struct nfs_commitres
*res
)
5252 struct nfs_commitargs args
= {
5256 struct nfs_server
*dst_server
= NFS_SERVER(file_inode(dst
));
5257 struct nfs4_exception exception
= { };
5261 status
= _nfs4_proc_commit(dst
, &args
, res
);
5262 status
= nfs4_handle_exception(dst_server
, status
, &exception
);
5263 } while (exception
.retry
);
5268 struct nfs4_renewdata
{
5269 struct nfs_client
*client
;
5270 unsigned long timestamp
;
5274 * nfs4_proc_async_renew(): This is not one of the nfs_rpc_ops; it is a special
5275 * standalone procedure for queueing an asynchronous RENEW.
5277 static void nfs4_renew_release(void *calldata
)
5279 struct nfs4_renewdata
*data
= calldata
;
5280 struct nfs_client
*clp
= data
->client
;
5282 if (refcount_read(&clp
->cl_count
) > 1)
5283 nfs4_schedule_state_renewal(clp
);
5284 nfs_put_client(clp
);
5288 static void nfs4_renew_done(struct rpc_task
*task
, void *calldata
)
5290 struct nfs4_renewdata
*data
= calldata
;
5291 struct nfs_client
*clp
= data
->client
;
5292 unsigned long timestamp
= data
->timestamp
;
5294 trace_nfs4_renew_async(clp
, task
->tk_status
);
5295 switch (task
->tk_status
) {
5298 case -NFS4ERR_LEASE_MOVED
:
5299 nfs4_schedule_lease_moved_recovery(clp
);
5302 /* Unless we're shutting down, schedule state recovery! */
5303 if (test_bit(NFS_CS_RENEWD
, &clp
->cl_res_state
) == 0)
5305 if (task
->tk_status
!= NFS4ERR_CB_PATH_DOWN
) {
5306 nfs4_schedule_lease_recovery(clp
);
5309 nfs4_schedule_path_down_recovery(clp
);
5311 do_renew_lease(clp
, timestamp
);
5314 static const struct rpc_call_ops nfs4_renew_ops
= {
5315 .rpc_call_done
= nfs4_renew_done
,
5316 .rpc_release
= nfs4_renew_release
,
5319 static int nfs4_proc_async_renew(struct nfs_client
*clp
, const struct cred
*cred
, unsigned renew_flags
)
5321 struct rpc_message msg
= {
5322 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RENEW
],
5326 struct nfs4_renewdata
*data
;
5328 if (renew_flags
== 0)
5330 if (!refcount_inc_not_zero(&clp
->cl_count
))
5332 data
= kmalloc(sizeof(*data
), GFP_NOFS
);
5334 nfs_put_client(clp
);
5338 data
->timestamp
= jiffies
;
5339 return rpc_call_async(clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
,
5340 &nfs4_renew_ops
, data
);
5343 static int nfs4_proc_renew(struct nfs_client
*clp
, const struct cred
*cred
)
5345 struct rpc_message msg
= {
5346 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RENEW
],
5350 unsigned long now
= jiffies
;
5353 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
5356 do_renew_lease(clp
, now
);
5360 static inline int nfs4_server_supports_acls(struct nfs_server
*server
)
5362 return server
->caps
& NFS_CAP_ACLS
;
5365 /* Assuming that XATTR_SIZE_MAX is a multiple of PAGE_SIZE, and that
5366 * it's OK to put sizeof(void) * (XATTR_SIZE_MAX/PAGE_SIZE) bytes on
5369 #define NFS4ACL_MAXPAGES DIV_ROUND_UP(XATTR_SIZE_MAX, PAGE_SIZE)
5371 static int buf_to_pages_noslab(const void *buf
, size_t buflen
,
5372 struct page
**pages
)
5374 struct page
*newpage
, **spages
;
5380 len
= min_t(size_t, PAGE_SIZE
, buflen
);
5381 newpage
= alloc_page(GFP_KERNEL
);
5383 if (newpage
== NULL
)
5385 memcpy(page_address(newpage
), buf
, len
);
5390 } while (buflen
!= 0);
5396 __free_page(spages
[rc
-1]);
5400 struct nfs4_cached_acl
{
5406 static void nfs4_set_cached_acl(struct inode
*inode
, struct nfs4_cached_acl
*acl
)
5408 struct nfs_inode
*nfsi
= NFS_I(inode
);
5410 spin_lock(&inode
->i_lock
);
5411 kfree(nfsi
->nfs4_acl
);
5412 nfsi
->nfs4_acl
= acl
;
5413 spin_unlock(&inode
->i_lock
);
5416 static void nfs4_zap_acl_attr(struct inode
*inode
)
5418 nfs4_set_cached_acl(inode
, NULL
);
5421 static inline ssize_t
nfs4_read_cached_acl(struct inode
*inode
, char *buf
, size_t buflen
)
5423 struct nfs_inode
*nfsi
= NFS_I(inode
);
5424 struct nfs4_cached_acl
*acl
;
5427 spin_lock(&inode
->i_lock
);
5428 acl
= nfsi
->nfs4_acl
;
5431 if (buf
== NULL
) /* user is just asking for length */
5433 if (acl
->cached
== 0)
5435 ret
= -ERANGE
; /* see getxattr(2) man page */
5436 if (acl
->len
> buflen
)
5438 memcpy(buf
, acl
->data
, acl
->len
);
5442 spin_unlock(&inode
->i_lock
);
5446 static void nfs4_write_cached_acl(struct inode
*inode
, struct page
**pages
, size_t pgbase
, size_t acl_len
)
5448 struct nfs4_cached_acl
*acl
;
5449 size_t buflen
= sizeof(*acl
) + acl_len
;
5451 if (buflen
<= PAGE_SIZE
) {
5452 acl
= kmalloc(buflen
, GFP_KERNEL
);
5456 _copy_from_pages(acl
->data
, pages
, pgbase
, acl_len
);
5458 acl
= kmalloc(sizeof(*acl
), GFP_KERNEL
);
5465 nfs4_set_cached_acl(inode
, acl
);
5469 * The getxattr API returns the required buffer length when called with a
5470 * NULL buf. The NFSv4 acl tool then calls getxattr again after allocating
5471 * the required buf. On a NULL buf, we send a page of data to the server
5472 * guessing that the ACL request can be serviced by a page. If so, we cache
5473 * up to the page of ACL data, and the 2nd call to getxattr is serviced by
5474 * the cache. If not so, we throw away the page, and cache the required
5475 * length. The next getxattr call will then produce another round trip to
5476 * the server, this time with the input buf of the required size.
5478 static ssize_t
__nfs4_get_acl_uncached(struct inode
*inode
, void *buf
, size_t buflen
)
5480 struct page
*pages
[NFS4ACL_MAXPAGES
+ 1] = {NULL
, };
5481 struct nfs_getaclargs args
= {
5482 .fh
= NFS_FH(inode
),
5486 struct nfs_getaclres res
= {
5489 struct rpc_message msg
= {
5490 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GETACL
],
5494 unsigned int npages
= DIV_ROUND_UP(buflen
, PAGE_SIZE
) + 1;
5495 int ret
= -ENOMEM
, i
;
5497 if (npages
> ARRAY_SIZE(pages
))
5500 for (i
= 0; i
< npages
; i
++) {
5501 pages
[i
] = alloc_page(GFP_KERNEL
);
5506 /* for decoding across pages */
5507 res
.acl_scratch
= alloc_page(GFP_KERNEL
);
5508 if (!res
.acl_scratch
)
5511 args
.acl_len
= npages
* PAGE_SIZE
;
5513 dprintk("%s buf %p buflen %zu npages %d args.acl_len %zu\n",
5514 __func__
, buf
, buflen
, npages
, args
.acl_len
);
5515 ret
= nfs4_call_sync(NFS_SERVER(inode
)->client
, NFS_SERVER(inode
),
5516 &msg
, &args
.seq_args
, &res
.seq_res
, 0);
5520 /* Handle the case where the passed-in buffer is too short */
5521 if (res
.acl_flags
& NFS4_ACL_TRUNC
) {
5522 /* Did the user only issue a request for the acl length? */
5528 nfs4_write_cached_acl(inode
, pages
, res
.acl_data_offset
, res
.acl_len
);
5530 if (res
.acl_len
> buflen
) {
5534 _copy_from_pages(buf
, pages
, res
.acl_data_offset
, res
.acl_len
);
5539 for (i
= 0; i
< npages
; i
++)
5541 __free_page(pages
[i
]);
5542 if (res
.acl_scratch
)
5543 __free_page(res
.acl_scratch
);
5547 static ssize_t
nfs4_get_acl_uncached(struct inode
*inode
, void *buf
, size_t buflen
)
5549 struct nfs4_exception exception
= {
5550 .interruptible
= true,
5554 ret
= __nfs4_get_acl_uncached(inode
, buf
, buflen
);
5555 trace_nfs4_get_acl(inode
, ret
);
5558 ret
= nfs4_handle_exception(NFS_SERVER(inode
), ret
, &exception
);
5559 } while (exception
.retry
);
5563 static ssize_t
nfs4_proc_get_acl(struct inode
*inode
, void *buf
, size_t buflen
)
5565 struct nfs_server
*server
= NFS_SERVER(inode
);
5568 if (!nfs4_server_supports_acls(server
))
5570 ret
= nfs_revalidate_inode(server
, inode
);
5573 if (NFS_I(inode
)->cache_validity
& NFS_INO_INVALID_ACL
)
5574 nfs_zap_acl_cache(inode
);
5575 ret
= nfs4_read_cached_acl(inode
, buf
, buflen
);
5577 /* -ENOENT is returned if there is no ACL or if there is an ACL
5578 * but no cached acl data, just the acl length */
5580 return nfs4_get_acl_uncached(inode
, buf
, buflen
);
5583 static int __nfs4_proc_set_acl(struct inode
*inode
, const void *buf
, size_t buflen
)
5585 struct nfs_server
*server
= NFS_SERVER(inode
);
5586 struct page
*pages
[NFS4ACL_MAXPAGES
];
5587 struct nfs_setaclargs arg
= {
5588 .fh
= NFS_FH(inode
),
5592 struct nfs_setaclres res
;
5593 struct rpc_message msg
= {
5594 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETACL
],
5598 unsigned int npages
= DIV_ROUND_UP(buflen
, PAGE_SIZE
);
5601 if (!nfs4_server_supports_acls(server
))
5603 if (npages
> ARRAY_SIZE(pages
))
5605 i
= buf_to_pages_noslab(buf
, buflen
, arg
.acl_pages
);
5608 nfs4_inode_make_writeable(inode
);
5609 ret
= nfs4_call_sync(server
->client
, server
, &msg
, &arg
.seq_args
, &res
.seq_res
, 1);
5612 * Free each page after tx, so the only ref left is
5613 * held by the network stack
5616 put_page(pages
[i
-1]);
5619 * Acl update can result in inode attribute update.
5620 * so mark the attribute cache invalid.
5622 spin_lock(&inode
->i_lock
);
5623 NFS_I(inode
)->cache_validity
|= NFS_INO_INVALID_CHANGE
5624 | NFS_INO_INVALID_CTIME
5625 | NFS_INO_REVAL_FORCED
;
5626 spin_unlock(&inode
->i_lock
);
5627 nfs_access_zap_cache(inode
);
5628 nfs_zap_acl_cache(inode
);
5632 static int nfs4_proc_set_acl(struct inode
*inode
, const void *buf
, size_t buflen
)
5634 struct nfs4_exception exception
= { };
5637 err
= __nfs4_proc_set_acl(inode
, buf
, buflen
);
5638 trace_nfs4_set_acl(inode
, err
);
5639 err
= nfs4_handle_exception(NFS_SERVER(inode
), err
,
5641 } while (exception
.retry
);
5645 #ifdef CONFIG_NFS_V4_SECURITY_LABEL
5646 static int _nfs4_get_security_label(struct inode
*inode
, void *buf
,
5649 struct nfs_server
*server
= NFS_SERVER(inode
);
5650 struct nfs_fattr fattr
;
5651 struct nfs4_label label
= {0, 0, buflen
, buf
};
5653 u32 bitmask
[3] = { 0, 0, FATTR4_WORD2_SECURITY_LABEL
};
5654 struct nfs4_getattr_arg arg
= {
5655 .fh
= NFS_FH(inode
),
5658 struct nfs4_getattr_res res
= {
5663 struct rpc_message msg
= {
5664 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GETATTR
],
5670 nfs_fattr_init(&fattr
);
5672 ret
= nfs4_call_sync(server
->client
, server
, &msg
, &arg
.seq_args
, &res
.seq_res
, 0);
5675 if (!(fattr
.valid
& NFS_ATTR_FATTR_V4_SECURITY_LABEL
))
5677 if (buflen
< label
.len
)
5682 static int nfs4_get_security_label(struct inode
*inode
, void *buf
,
5685 struct nfs4_exception exception
= {
5686 .interruptible
= true,
5690 if (!nfs_server_capable(inode
, NFS_CAP_SECURITY_LABEL
))
5694 err
= _nfs4_get_security_label(inode
, buf
, buflen
);
5695 trace_nfs4_get_security_label(inode
, err
);
5696 err
= nfs4_handle_exception(NFS_SERVER(inode
), err
,
5698 } while (exception
.retry
);
5702 static int _nfs4_do_set_security_label(struct inode
*inode
,
5703 struct nfs4_label
*ilabel
,
5704 struct nfs_fattr
*fattr
,
5705 struct nfs4_label
*olabel
)
5708 struct iattr sattr
= {0};
5709 struct nfs_server
*server
= NFS_SERVER(inode
);
5710 const u32 bitmask
[3] = { 0, 0, FATTR4_WORD2_SECURITY_LABEL
};
5711 struct nfs_setattrargs arg
= {
5712 .fh
= NFS_FH(inode
),
5718 struct nfs_setattrres res
= {
5723 struct rpc_message msg
= {
5724 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETATTR
],
5730 nfs4_stateid_copy(&arg
.stateid
, &zero_stateid
);
5732 status
= nfs4_call_sync(server
->client
, server
, &msg
, &arg
.seq_args
, &res
.seq_res
, 1);
5734 dprintk("%s failed: %d\n", __func__
, status
);
5739 static int nfs4_do_set_security_label(struct inode
*inode
,
5740 struct nfs4_label
*ilabel
,
5741 struct nfs_fattr
*fattr
,
5742 struct nfs4_label
*olabel
)
5744 struct nfs4_exception exception
= { };
5748 err
= _nfs4_do_set_security_label(inode
, ilabel
,
5750 trace_nfs4_set_security_label(inode
, err
);
5751 err
= nfs4_handle_exception(NFS_SERVER(inode
), err
,
5753 } while (exception
.retry
);
5758 nfs4_set_security_label(struct inode
*inode
, const void *buf
, size_t buflen
)
5760 struct nfs4_label ilabel
, *olabel
= NULL
;
5761 struct nfs_fattr fattr
;
5764 if (!nfs_server_capable(inode
, NFS_CAP_SECURITY_LABEL
))
5767 nfs_fattr_init(&fattr
);
5771 ilabel
.label
= (char *)buf
;
5772 ilabel
.len
= buflen
;
5774 olabel
= nfs4_label_alloc(NFS_SERVER(inode
), GFP_KERNEL
);
5775 if (IS_ERR(olabel
)) {
5776 status
= -PTR_ERR(olabel
);
5780 status
= nfs4_do_set_security_label(inode
, &ilabel
, &fattr
, olabel
);
5782 nfs_setsecurity(inode
, &fattr
, olabel
);
5784 nfs4_label_free(olabel
);
5788 #endif /* CONFIG_NFS_V4_SECURITY_LABEL */
5791 static void nfs4_init_boot_verifier(const struct nfs_client
*clp
,
5792 nfs4_verifier
*bootverf
)
5796 if (test_bit(NFS4CLNT_PURGE_STATE
, &clp
->cl_state
)) {
5797 /* An impossible timestamp guarantees this value
5798 * will never match a generated boot time. */
5799 verf
[0] = cpu_to_be32(U32_MAX
);
5800 verf
[1] = cpu_to_be32(U32_MAX
);
5802 struct nfs_net
*nn
= net_generic(clp
->cl_net
, nfs_net_id
);
5803 u64 ns
= ktime_to_ns(nn
->boot_time
);
5805 verf
[0] = cpu_to_be32(ns
>> 32);
5806 verf
[1] = cpu_to_be32(ns
);
5808 memcpy(bootverf
->data
, verf
, sizeof(bootverf
->data
));
5812 nfs4_init_nonuniform_client_string(struct nfs_client
*clp
)
5817 if (clp
->cl_owner_id
!= NULL
)
5822 strlen(clp
->cl_rpcclient
->cl_nodename
) +
5824 strlen(rpc_peeraddr2str(clp
->cl_rpcclient
, RPC_DISPLAY_ADDR
)) +
5827 if (nfs4_client_id_uniquifier
[0] != '\0')
5828 len
+= strlen(nfs4_client_id_uniquifier
) + 1;
5829 if (len
> NFS4_OPAQUE_LIMIT
+ 1)
5833 * Since this string is allocated at mount time, and held until the
5834 * nfs_client is destroyed, we can use GFP_KERNEL here w/o worrying
5835 * about a memory-reclaim deadlock.
5837 str
= kmalloc(len
, GFP_KERNEL
);
5842 if (nfs4_client_id_uniquifier
[0] != '\0')
5843 scnprintf(str
, len
, "Linux NFSv4.0 %s/%s/%s",
5844 clp
->cl_rpcclient
->cl_nodename
,
5845 nfs4_client_id_uniquifier
,
5846 rpc_peeraddr2str(clp
->cl_rpcclient
,
5849 scnprintf(str
, len
, "Linux NFSv4.0 %s/%s",
5850 clp
->cl_rpcclient
->cl_nodename
,
5851 rpc_peeraddr2str(clp
->cl_rpcclient
,
5855 clp
->cl_owner_id
= str
;
5860 nfs4_init_uniquifier_client_string(struct nfs_client
*clp
)
5865 len
= 10 + 10 + 1 + 10 + 1 +
5866 strlen(nfs4_client_id_uniquifier
) + 1 +
5867 strlen(clp
->cl_rpcclient
->cl_nodename
) + 1;
5869 if (len
> NFS4_OPAQUE_LIMIT
+ 1)
5873 * Since this string is allocated at mount time, and held until the
5874 * nfs_client is destroyed, we can use GFP_KERNEL here w/o worrying
5875 * about a memory-reclaim deadlock.
5877 str
= kmalloc(len
, GFP_KERNEL
);
5881 scnprintf(str
, len
, "Linux NFSv%u.%u %s/%s",
5882 clp
->rpc_ops
->version
, clp
->cl_minorversion
,
5883 nfs4_client_id_uniquifier
,
5884 clp
->cl_rpcclient
->cl_nodename
);
5885 clp
->cl_owner_id
= str
;
5890 nfs4_init_uniform_client_string(struct nfs_client
*clp
)
5895 if (clp
->cl_owner_id
!= NULL
)
5898 if (nfs4_client_id_uniquifier
[0] != '\0')
5899 return nfs4_init_uniquifier_client_string(clp
);
5901 len
= 10 + 10 + 1 + 10 + 1 +
5902 strlen(clp
->cl_rpcclient
->cl_nodename
) + 1;
5904 if (len
> NFS4_OPAQUE_LIMIT
+ 1)
5908 * Since this string is allocated at mount time, and held until the
5909 * nfs_client is destroyed, we can use GFP_KERNEL here w/o worrying
5910 * about a memory-reclaim deadlock.
5912 str
= kmalloc(len
, GFP_KERNEL
);
5916 scnprintf(str
, len
, "Linux NFSv%u.%u %s",
5917 clp
->rpc_ops
->version
, clp
->cl_minorversion
,
5918 clp
->cl_rpcclient
->cl_nodename
);
5919 clp
->cl_owner_id
= str
;
5924 * nfs4_callback_up_net() starts only "tcp" and "tcp6" callback
5925 * services. Advertise one based on the address family of the
5929 nfs4_init_callback_netid(const struct nfs_client
*clp
, char *buf
, size_t len
)
5931 if (strchr(clp
->cl_ipaddr
, ':') != NULL
)
5932 return scnprintf(buf
, len
, "tcp6");
5934 return scnprintf(buf
, len
, "tcp");
5937 static void nfs4_setclientid_done(struct rpc_task
*task
, void *calldata
)
5939 struct nfs4_setclientid
*sc
= calldata
;
5941 if (task
->tk_status
== 0)
5942 sc
->sc_cred
= get_rpccred(task
->tk_rqstp
->rq_cred
);
5945 static const struct rpc_call_ops nfs4_setclientid_ops
= {
5946 .rpc_call_done
= nfs4_setclientid_done
,
5950 * nfs4_proc_setclientid - Negotiate client ID
5951 * @clp: state data structure
5952 * @program: RPC program for NFSv4 callback service
5953 * @port: IP port number for NFS4 callback service
5954 * @cred: credential to use for this call
5955 * @res: where to place the result
5957 * Returns zero, a negative errno, or a negative NFS4ERR status code.
5959 int nfs4_proc_setclientid(struct nfs_client
*clp
, u32 program
,
5960 unsigned short port
, const struct cred
*cred
,
5961 struct nfs4_setclientid_res
*res
)
5963 nfs4_verifier sc_verifier
;
5964 struct nfs4_setclientid setclientid
= {
5965 .sc_verifier
= &sc_verifier
,
5969 struct rpc_message msg
= {
5970 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETCLIENTID
],
5971 .rpc_argp
= &setclientid
,
5975 struct rpc_task
*task
;
5976 struct rpc_task_setup task_setup_data
= {
5977 .rpc_client
= clp
->cl_rpcclient
,
5978 .rpc_message
= &msg
,
5979 .callback_ops
= &nfs4_setclientid_ops
,
5980 .callback_data
= &setclientid
,
5981 .flags
= RPC_TASK_TIMEOUT
,
5985 /* nfs_client_id4 */
5986 nfs4_init_boot_verifier(clp
, &sc_verifier
);
5988 if (test_bit(NFS_CS_MIGRATION
, &clp
->cl_flags
))
5989 status
= nfs4_init_uniform_client_string(clp
);
5991 status
= nfs4_init_nonuniform_client_string(clp
);
5997 setclientid
.sc_netid_len
=
5998 nfs4_init_callback_netid(clp
,
5999 setclientid
.sc_netid
,
6000 sizeof(setclientid
.sc_netid
));
6001 setclientid
.sc_uaddr_len
= scnprintf(setclientid
.sc_uaddr
,
6002 sizeof(setclientid
.sc_uaddr
), "%s.%u.%u",
6003 clp
->cl_ipaddr
, port
>> 8, port
& 255);
6005 dprintk("NFS call setclientid auth=%s, '%s'\n",
6006 clp
->cl_rpcclient
->cl_auth
->au_ops
->au_name
,
6008 task
= rpc_run_task(&task_setup_data
);
6010 status
= PTR_ERR(task
);
6013 status
= task
->tk_status
;
6014 if (setclientid
.sc_cred
) {
6015 clp
->cl_acceptor
= rpcauth_stringify_acceptor(setclientid
.sc_cred
);
6016 put_rpccred(setclientid
.sc_cred
);
6020 trace_nfs4_setclientid(clp
, status
);
6021 dprintk("NFS reply setclientid: %d\n", status
);
6026 * nfs4_proc_setclientid_confirm - Confirm client ID
6027 * @clp: state data structure
6028 * @arg: result of a previous SETCLIENTID
6029 * @cred: credential to use for this call
6031 * Returns zero, a negative errno, or a negative NFS4ERR status code.
6033 int nfs4_proc_setclientid_confirm(struct nfs_client
*clp
,
6034 struct nfs4_setclientid_res
*arg
,
6035 const struct cred
*cred
)
6037 struct rpc_message msg
= {
6038 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETCLIENTID_CONFIRM
],
6044 dprintk("NFS call setclientid_confirm auth=%s, (client ID %llx)\n",
6045 clp
->cl_rpcclient
->cl_auth
->au_ops
->au_name
,
6047 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
6048 trace_nfs4_setclientid_confirm(clp
, status
);
6049 dprintk("NFS reply setclientid_confirm: %d\n", status
);
6053 struct nfs4_delegreturndata
{
6054 struct nfs4_delegreturnargs args
;
6055 struct nfs4_delegreturnres res
;
6057 nfs4_stateid stateid
;
6058 unsigned long timestamp
;
6060 struct nfs4_layoutreturn_args arg
;
6061 struct nfs4_layoutreturn_res res
;
6062 struct nfs4_xdr_opaque_data ld_private
;
6066 struct nfs_fattr fattr
;
6068 struct inode
*inode
;
6071 static void nfs4_delegreturn_done(struct rpc_task
*task
, void *calldata
)
6073 struct nfs4_delegreturndata
*data
= calldata
;
6074 struct nfs4_exception exception
= {
6075 .inode
= data
->inode
,
6076 .stateid
= &data
->stateid
,
6079 if (!nfs4_sequence_done(task
, &data
->res
.seq_res
))
6082 trace_nfs4_delegreturn_exit(&data
->args
, &data
->res
, task
->tk_status
);
6084 /* Handle Layoutreturn errors */
6085 if (data
->args
.lr_args
&& task
->tk_status
!= 0) {
6086 switch(data
->res
.lr_ret
) {
6088 data
->res
.lr_ret
= -NFS4ERR_NOMATCHING_LAYOUT
;
6091 data
->args
.lr_args
= NULL
;
6092 data
->res
.lr_res
= NULL
;
6094 case -NFS4ERR_OLD_STATEID
:
6095 if (nfs4_layoutreturn_refresh_stateid(&data
->args
.lr_args
->stateid
,
6096 &data
->args
.lr_args
->range
,
6100 case -NFS4ERR_ADMIN_REVOKED
:
6101 case -NFS4ERR_DELEG_REVOKED
:
6102 case -NFS4ERR_EXPIRED
:
6103 case -NFS4ERR_BAD_STATEID
:
6104 case -NFS4ERR_UNKNOWN_LAYOUTTYPE
:
6105 case -NFS4ERR_WRONG_CRED
:
6106 data
->args
.lr_args
= NULL
;
6107 data
->res
.lr_res
= NULL
;
6112 switch (task
->tk_status
) {
6114 renew_lease(data
->res
.server
, data
->timestamp
);
6116 case -NFS4ERR_ADMIN_REVOKED
:
6117 case -NFS4ERR_DELEG_REVOKED
:
6118 case -NFS4ERR_EXPIRED
:
6119 nfs4_free_revoked_stateid(data
->res
.server
,
6121 task
->tk_msg
.rpc_cred
);
6123 case -NFS4ERR_BAD_STATEID
:
6124 case -NFS4ERR_STALE_STATEID
:
6125 task
->tk_status
= 0;
6127 case -NFS4ERR_OLD_STATEID
:
6128 if (nfs4_refresh_delegation_stateid(&data
->stateid
, data
->inode
))
6130 task
->tk_status
= 0;
6132 case -NFS4ERR_ACCESS
:
6133 if (data
->args
.bitmask
) {
6134 data
->args
.bitmask
= NULL
;
6135 data
->res
.fattr
= NULL
;
6140 task
->tk_status
= nfs4_async_handle_exception(task
,
6141 data
->res
.server
, task
->tk_status
,
6143 if (exception
.retry
)
6146 data
->rpc_status
= task
->tk_status
;
6149 data
->res
.lr_ret
= 0;
6151 task
->tk_status
= 0;
6152 rpc_restart_call_prepare(task
);
6155 static void nfs4_delegreturn_release(void *calldata
)
6157 struct nfs4_delegreturndata
*data
= calldata
;
6158 struct inode
*inode
= data
->inode
;
6162 pnfs_roc_release(&data
->lr
.arg
, &data
->lr
.res
,
6164 nfs_post_op_update_inode_force_wcc(inode
, &data
->fattr
);
6165 nfs_iput_and_deactive(inode
);
6170 static void nfs4_delegreturn_prepare(struct rpc_task
*task
, void *data
)
6172 struct nfs4_delegreturndata
*d_data
;
6173 struct pnfs_layout_hdr
*lo
;
6175 d_data
= (struct nfs4_delegreturndata
*)data
;
6177 if (!d_data
->lr
.roc
&& nfs4_wait_on_layoutreturn(d_data
->inode
, task
))
6180 lo
= d_data
->args
.lr_args
? d_data
->args
.lr_args
->layout
: NULL
;
6181 if (lo
&& !pnfs_layout_is_valid(lo
)) {
6182 d_data
->args
.lr_args
= NULL
;
6183 d_data
->res
.lr_res
= NULL
;
6186 nfs4_setup_sequence(d_data
->res
.server
->nfs_client
,
6187 &d_data
->args
.seq_args
,
6188 &d_data
->res
.seq_res
,
6192 static const struct rpc_call_ops nfs4_delegreturn_ops
= {
6193 .rpc_call_prepare
= nfs4_delegreturn_prepare
,
6194 .rpc_call_done
= nfs4_delegreturn_done
,
6195 .rpc_release
= nfs4_delegreturn_release
,
6198 static int _nfs4_proc_delegreturn(struct inode
*inode
, const struct cred
*cred
, const nfs4_stateid
*stateid
, int issync
)
6200 struct nfs4_delegreturndata
*data
;
6201 struct nfs_server
*server
= NFS_SERVER(inode
);
6202 struct rpc_task
*task
;
6203 struct rpc_message msg
= {
6204 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_DELEGRETURN
],
6207 struct rpc_task_setup task_setup_data
= {
6208 .rpc_client
= server
->client
,
6209 .rpc_message
= &msg
,
6210 .callback_ops
= &nfs4_delegreturn_ops
,
6211 .flags
= RPC_TASK_ASYNC
,
6215 data
= kzalloc(sizeof(*data
), GFP_NOFS
);
6218 nfs4_init_sequence(&data
->args
.seq_args
, &data
->res
.seq_res
, 1, 0);
6220 nfs4_state_protect(server
->nfs_client
,
6221 NFS_SP4_MACH_CRED_CLEANUP
,
6222 &task_setup_data
.rpc_client
, &msg
);
6224 data
->args
.fhandle
= &data
->fh
;
6225 data
->args
.stateid
= &data
->stateid
;
6226 data
->args
.bitmask
= server
->cache_consistency_bitmask
;
6227 nfs_copy_fh(&data
->fh
, NFS_FH(inode
));
6228 nfs4_stateid_copy(&data
->stateid
, stateid
);
6229 data
->res
.fattr
= &data
->fattr
;
6230 data
->res
.server
= server
;
6231 data
->res
.lr_ret
= -NFS4ERR_NOMATCHING_LAYOUT
;
6232 data
->lr
.arg
.ld_private
= &data
->lr
.ld_private
;
6233 nfs_fattr_init(data
->res
.fattr
);
6234 data
->timestamp
= jiffies
;
6235 data
->rpc_status
= 0;
6236 data
->lr
.roc
= pnfs_roc(inode
, &data
->lr
.arg
, &data
->lr
.res
, cred
);
6237 data
->inode
= nfs_igrab_and_active(inode
);
6240 data
->args
.lr_args
= &data
->lr
.arg
;
6241 data
->res
.lr_res
= &data
->lr
.res
;
6243 } else if (data
->lr
.roc
) {
6244 pnfs_roc_release(&data
->lr
.arg
, &data
->lr
.res
, 0);
6245 data
->lr
.roc
= false;
6248 task_setup_data
.callback_data
= data
;
6249 msg
.rpc_argp
= &data
->args
;
6250 msg
.rpc_resp
= &data
->res
;
6251 task
= rpc_run_task(&task_setup_data
);
6253 return PTR_ERR(task
);
6256 status
= rpc_wait_for_completion_task(task
);
6259 status
= data
->rpc_status
;
6265 int nfs4_proc_delegreturn(struct inode
*inode
, const struct cred
*cred
, const nfs4_stateid
*stateid
, int issync
)
6267 struct nfs_server
*server
= NFS_SERVER(inode
);
6268 struct nfs4_exception exception
= { };
6271 err
= _nfs4_proc_delegreturn(inode
, cred
, stateid
, issync
);
6272 trace_nfs4_delegreturn(inode
, stateid
, err
);
6274 case -NFS4ERR_STALE_STATEID
:
6275 case -NFS4ERR_EXPIRED
:
6279 err
= nfs4_handle_exception(server
, err
, &exception
);
6280 } while (exception
.retry
);
6284 static int _nfs4_proc_getlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
6286 struct inode
*inode
= state
->inode
;
6287 struct nfs_server
*server
= NFS_SERVER(inode
);
6288 struct nfs_client
*clp
= server
->nfs_client
;
6289 struct nfs_lockt_args arg
= {
6290 .fh
= NFS_FH(inode
),
6293 struct nfs_lockt_res res
= {
6296 struct rpc_message msg
= {
6297 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOCKT
],
6300 .rpc_cred
= state
->owner
->so_cred
,
6302 struct nfs4_lock_state
*lsp
;
6305 arg
.lock_owner
.clientid
= clp
->cl_clientid
;
6306 status
= nfs4_set_lock_state(state
, request
);
6309 lsp
= request
->fl_u
.nfs4_fl
.owner
;
6310 arg
.lock_owner
.id
= lsp
->ls_seqid
.owner_id
;
6311 arg
.lock_owner
.s_dev
= server
->s_dev
;
6312 status
= nfs4_call_sync(server
->client
, server
, &msg
, &arg
.seq_args
, &res
.seq_res
, 1);
6315 request
->fl_type
= F_UNLCK
;
6317 case -NFS4ERR_DENIED
:
6320 request
->fl_ops
->fl_release_private(request
);
6321 request
->fl_ops
= NULL
;
6326 static int nfs4_proc_getlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
6328 struct nfs4_exception exception
= {
6329 .interruptible
= true,
6334 err
= _nfs4_proc_getlk(state
, cmd
, request
);
6335 trace_nfs4_get_lock(request
, state
, cmd
, err
);
6336 err
= nfs4_handle_exception(NFS_SERVER(state
->inode
), err
,
6338 } while (exception
.retry
);
6342 struct nfs4_unlockdata
{
6343 struct nfs_locku_args arg
;
6344 struct nfs_locku_res res
;
6345 struct nfs4_lock_state
*lsp
;
6346 struct nfs_open_context
*ctx
;
6347 struct nfs_lock_context
*l_ctx
;
6348 struct file_lock fl
;
6349 struct nfs_server
*server
;
6350 unsigned long timestamp
;
6353 static struct nfs4_unlockdata
*nfs4_alloc_unlockdata(struct file_lock
*fl
,
6354 struct nfs_open_context
*ctx
,
6355 struct nfs4_lock_state
*lsp
,
6356 struct nfs_seqid
*seqid
)
6358 struct nfs4_unlockdata
*p
;
6359 struct inode
*inode
= lsp
->ls_state
->inode
;
6361 p
= kzalloc(sizeof(*p
), GFP_NOFS
);
6364 p
->arg
.fh
= NFS_FH(inode
);
6366 p
->arg
.seqid
= seqid
;
6367 p
->res
.seqid
= seqid
;
6369 /* Ensure we don't close file until we're done freeing locks! */
6370 p
->ctx
= get_nfs_open_context(ctx
);
6371 p
->l_ctx
= nfs_get_lock_context(ctx
);
6372 locks_init_lock(&p
->fl
);
6373 locks_copy_lock(&p
->fl
, fl
);
6374 p
->server
= NFS_SERVER(inode
);
6378 static void nfs4_locku_release_calldata(void *data
)
6380 struct nfs4_unlockdata
*calldata
= data
;
6381 nfs_free_seqid(calldata
->arg
.seqid
);
6382 nfs4_put_lock_state(calldata
->lsp
);
6383 nfs_put_lock_context(calldata
->l_ctx
);
6384 put_nfs_open_context(calldata
->ctx
);
6388 static void nfs4_locku_done(struct rpc_task
*task
, void *data
)
6390 struct nfs4_unlockdata
*calldata
= data
;
6391 struct nfs4_exception exception
= {
6392 .inode
= calldata
->lsp
->ls_state
->inode
,
6393 .stateid
= &calldata
->arg
.stateid
,
6396 if (!nfs4_sequence_done(task
, &calldata
->res
.seq_res
))
6398 switch (task
->tk_status
) {
6400 renew_lease(calldata
->server
, calldata
->timestamp
);
6401 locks_lock_inode_wait(calldata
->lsp
->ls_state
->inode
, &calldata
->fl
);
6402 if (nfs4_update_lock_stateid(calldata
->lsp
,
6403 &calldata
->res
.stateid
))
6406 case -NFS4ERR_ADMIN_REVOKED
:
6407 case -NFS4ERR_EXPIRED
:
6408 nfs4_free_revoked_stateid(calldata
->server
,
6409 &calldata
->arg
.stateid
,
6410 task
->tk_msg
.rpc_cred
);
6412 case -NFS4ERR_BAD_STATEID
:
6413 case -NFS4ERR_OLD_STATEID
:
6414 case -NFS4ERR_STALE_STATEID
:
6415 if (!nfs4_stateid_match(&calldata
->arg
.stateid
,
6416 &calldata
->lsp
->ls_stateid
))
6417 rpc_restart_call_prepare(task
);
6420 task
->tk_status
= nfs4_async_handle_exception(task
,
6421 calldata
->server
, task
->tk_status
,
6423 if (exception
.retry
)
6424 rpc_restart_call_prepare(task
);
6426 nfs_release_seqid(calldata
->arg
.seqid
);
6429 static void nfs4_locku_prepare(struct rpc_task
*task
, void *data
)
6431 struct nfs4_unlockdata
*calldata
= data
;
6433 if (test_bit(NFS_CONTEXT_UNLOCK
, &calldata
->l_ctx
->open_context
->flags
) &&
6434 nfs_async_iocounter_wait(task
, calldata
->l_ctx
))
6437 if (nfs_wait_on_sequence(calldata
->arg
.seqid
, task
) != 0)
6439 nfs4_stateid_copy(&calldata
->arg
.stateid
, &calldata
->lsp
->ls_stateid
);
6440 if (test_bit(NFS_LOCK_INITIALIZED
, &calldata
->lsp
->ls_flags
) == 0) {
6441 /* Note: exit _without_ running nfs4_locku_done */
6444 calldata
->timestamp
= jiffies
;
6445 if (nfs4_setup_sequence(calldata
->server
->nfs_client
,
6446 &calldata
->arg
.seq_args
,
6447 &calldata
->res
.seq_res
,
6449 nfs_release_seqid(calldata
->arg
.seqid
);
6452 task
->tk_action
= NULL
;
6454 nfs4_sequence_done(task
, &calldata
->res
.seq_res
);
6457 static const struct rpc_call_ops nfs4_locku_ops
= {
6458 .rpc_call_prepare
= nfs4_locku_prepare
,
6459 .rpc_call_done
= nfs4_locku_done
,
6460 .rpc_release
= nfs4_locku_release_calldata
,
6463 static struct rpc_task
*nfs4_do_unlck(struct file_lock
*fl
,
6464 struct nfs_open_context
*ctx
,
6465 struct nfs4_lock_state
*lsp
,
6466 struct nfs_seqid
*seqid
)
6468 struct nfs4_unlockdata
*data
;
6469 struct rpc_message msg
= {
6470 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOCKU
],
6471 .rpc_cred
= ctx
->cred
,
6473 struct rpc_task_setup task_setup_data
= {
6474 .rpc_client
= NFS_CLIENT(lsp
->ls_state
->inode
),
6475 .rpc_message
= &msg
,
6476 .callback_ops
= &nfs4_locku_ops
,
6477 .workqueue
= nfsiod_workqueue
,
6478 .flags
= RPC_TASK_ASYNC
,
6481 nfs4_state_protect(NFS_SERVER(lsp
->ls_state
->inode
)->nfs_client
,
6482 NFS_SP4_MACH_CRED_CLEANUP
, &task_setup_data
.rpc_client
, &msg
);
6484 /* Ensure this is an unlock - when canceling a lock, the
6485 * canceled lock is passed in, and it won't be an unlock.
6487 fl
->fl_type
= F_UNLCK
;
6488 if (fl
->fl_flags
& FL_CLOSE
)
6489 set_bit(NFS_CONTEXT_UNLOCK
, &ctx
->flags
);
6491 data
= nfs4_alloc_unlockdata(fl
, ctx
, lsp
, seqid
);
6493 nfs_free_seqid(seqid
);
6494 return ERR_PTR(-ENOMEM
);
6497 nfs4_init_sequence(&data
->arg
.seq_args
, &data
->res
.seq_res
, 1, 0);
6498 msg
.rpc_argp
= &data
->arg
;
6499 msg
.rpc_resp
= &data
->res
;
6500 task_setup_data
.callback_data
= data
;
6501 return rpc_run_task(&task_setup_data
);
6504 static int nfs4_proc_unlck(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
6506 struct inode
*inode
= state
->inode
;
6507 struct nfs4_state_owner
*sp
= state
->owner
;
6508 struct nfs_inode
*nfsi
= NFS_I(inode
);
6509 struct nfs_seqid
*seqid
;
6510 struct nfs4_lock_state
*lsp
;
6511 struct rpc_task
*task
;
6512 struct nfs_seqid
*(*alloc_seqid
)(struct nfs_seqid_counter
*, gfp_t
);
6514 unsigned char fl_flags
= request
->fl_flags
;
6516 status
= nfs4_set_lock_state(state
, request
);
6517 /* Unlock _before_ we do the RPC call */
6518 request
->fl_flags
|= FL_EXISTS
;
6519 /* Exclude nfs_delegation_claim_locks() */
6520 mutex_lock(&sp
->so_delegreturn_mutex
);
6521 /* Exclude nfs4_reclaim_open_stateid() - note nesting! */
6522 down_read(&nfsi
->rwsem
);
6523 if (locks_lock_inode_wait(inode
, request
) == -ENOENT
) {
6524 up_read(&nfsi
->rwsem
);
6525 mutex_unlock(&sp
->so_delegreturn_mutex
);
6528 up_read(&nfsi
->rwsem
);
6529 mutex_unlock(&sp
->so_delegreturn_mutex
);
6532 /* Is this a delegated lock? */
6533 lsp
= request
->fl_u
.nfs4_fl
.owner
;
6534 if (test_bit(NFS_LOCK_INITIALIZED
, &lsp
->ls_flags
) == 0)
6536 alloc_seqid
= NFS_SERVER(inode
)->nfs_client
->cl_mvops
->alloc_seqid
;
6537 seqid
= alloc_seqid(&lsp
->ls_seqid
, GFP_KERNEL
);
6541 task
= nfs4_do_unlck(request
, nfs_file_open_context(request
->fl_file
), lsp
, seqid
);
6542 status
= PTR_ERR(task
);
6545 status
= rpc_wait_for_completion_task(task
);
6548 request
->fl_flags
= fl_flags
;
6549 trace_nfs4_unlock(request
, state
, F_SETLK
, status
);
6553 struct nfs4_lockdata
{
6554 struct nfs_lock_args arg
;
6555 struct nfs_lock_res res
;
6556 struct nfs4_lock_state
*lsp
;
6557 struct nfs_open_context
*ctx
;
6558 struct file_lock fl
;
6559 unsigned long timestamp
;
6562 struct nfs_server
*server
;
6565 static struct nfs4_lockdata
*nfs4_alloc_lockdata(struct file_lock
*fl
,
6566 struct nfs_open_context
*ctx
, struct nfs4_lock_state
*lsp
,
6569 struct nfs4_lockdata
*p
;
6570 struct inode
*inode
= lsp
->ls_state
->inode
;
6571 struct nfs_server
*server
= NFS_SERVER(inode
);
6572 struct nfs_seqid
*(*alloc_seqid
)(struct nfs_seqid_counter
*, gfp_t
);
6574 p
= kzalloc(sizeof(*p
), gfp_mask
);
6578 p
->arg
.fh
= NFS_FH(inode
);
6580 p
->arg
.open_seqid
= nfs_alloc_seqid(&lsp
->ls_state
->owner
->so_seqid
, gfp_mask
);
6581 if (IS_ERR(p
->arg
.open_seqid
))
6583 alloc_seqid
= server
->nfs_client
->cl_mvops
->alloc_seqid
;
6584 p
->arg
.lock_seqid
= alloc_seqid(&lsp
->ls_seqid
, gfp_mask
);
6585 if (IS_ERR(p
->arg
.lock_seqid
))
6586 goto out_free_seqid
;
6587 p
->arg
.lock_owner
.clientid
= server
->nfs_client
->cl_clientid
;
6588 p
->arg
.lock_owner
.id
= lsp
->ls_seqid
.owner_id
;
6589 p
->arg
.lock_owner
.s_dev
= server
->s_dev
;
6590 p
->res
.lock_seqid
= p
->arg
.lock_seqid
;
6593 p
->ctx
= get_nfs_open_context(ctx
);
6594 locks_init_lock(&p
->fl
);
6595 locks_copy_lock(&p
->fl
, fl
);
6598 nfs_free_seqid(p
->arg
.open_seqid
);
6604 static void nfs4_lock_prepare(struct rpc_task
*task
, void *calldata
)
6606 struct nfs4_lockdata
*data
= calldata
;
6607 struct nfs4_state
*state
= data
->lsp
->ls_state
;
6609 dprintk("%s: begin!\n", __func__
);
6610 if (nfs_wait_on_sequence(data
->arg
.lock_seqid
, task
) != 0)
6612 /* Do we need to do an open_to_lock_owner? */
6613 if (!test_bit(NFS_LOCK_INITIALIZED
, &data
->lsp
->ls_flags
)) {
6614 if (nfs_wait_on_sequence(data
->arg
.open_seqid
, task
) != 0) {
6615 goto out_release_lock_seqid
;
6617 nfs4_stateid_copy(&data
->arg
.open_stateid
,
6618 &state
->open_stateid
);
6619 data
->arg
.new_lock_owner
= 1;
6620 data
->res
.open_seqid
= data
->arg
.open_seqid
;
6622 data
->arg
.new_lock_owner
= 0;
6623 nfs4_stateid_copy(&data
->arg
.lock_stateid
,
6624 &data
->lsp
->ls_stateid
);
6626 if (!nfs4_valid_open_stateid(state
)) {
6627 data
->rpc_status
= -EBADF
;
6628 task
->tk_action
= NULL
;
6629 goto out_release_open_seqid
;
6631 data
->timestamp
= jiffies
;
6632 if (nfs4_setup_sequence(data
->server
->nfs_client
,
6633 &data
->arg
.seq_args
,
6637 out_release_open_seqid
:
6638 nfs_release_seqid(data
->arg
.open_seqid
);
6639 out_release_lock_seqid
:
6640 nfs_release_seqid(data
->arg
.lock_seqid
);
6642 nfs4_sequence_done(task
, &data
->res
.seq_res
);
6643 dprintk("%s: done!, ret = %d\n", __func__
, data
->rpc_status
);
6646 static void nfs4_lock_done(struct rpc_task
*task
, void *calldata
)
6648 struct nfs4_lockdata
*data
= calldata
;
6649 struct nfs4_lock_state
*lsp
= data
->lsp
;
6651 dprintk("%s: begin!\n", __func__
);
6653 if (!nfs4_sequence_done(task
, &data
->res
.seq_res
))
6656 data
->rpc_status
= task
->tk_status
;
6657 switch (task
->tk_status
) {
6659 renew_lease(NFS_SERVER(d_inode(data
->ctx
->dentry
)),
6661 if (data
->arg
.new_lock
&& !data
->cancelled
) {
6662 data
->fl
.fl_flags
&= ~(FL_SLEEP
| FL_ACCESS
);
6663 if (locks_lock_inode_wait(lsp
->ls_state
->inode
, &data
->fl
) < 0)
6666 if (data
->arg
.new_lock_owner
!= 0) {
6667 nfs_confirm_seqid(&lsp
->ls_seqid
, 0);
6668 nfs4_stateid_copy(&lsp
->ls_stateid
, &data
->res
.stateid
);
6669 set_bit(NFS_LOCK_INITIALIZED
, &lsp
->ls_flags
);
6670 } else if (!nfs4_update_lock_stateid(lsp
, &data
->res
.stateid
))
6673 case -NFS4ERR_BAD_STATEID
:
6674 case -NFS4ERR_OLD_STATEID
:
6675 case -NFS4ERR_STALE_STATEID
:
6676 case -NFS4ERR_EXPIRED
:
6677 if (data
->arg
.new_lock_owner
!= 0) {
6678 if (!nfs4_stateid_match(&data
->arg
.open_stateid
,
6679 &lsp
->ls_state
->open_stateid
))
6681 } else if (!nfs4_stateid_match(&data
->arg
.lock_stateid
,
6686 dprintk("%s: done, ret = %d!\n", __func__
, data
->rpc_status
);
6689 if (!data
->cancelled
)
6690 rpc_restart_call_prepare(task
);
6694 static void nfs4_lock_release(void *calldata
)
6696 struct nfs4_lockdata
*data
= calldata
;
6698 dprintk("%s: begin!\n", __func__
);
6699 nfs_free_seqid(data
->arg
.open_seqid
);
6700 if (data
->cancelled
&& data
->rpc_status
== 0) {
6701 struct rpc_task
*task
;
6702 task
= nfs4_do_unlck(&data
->fl
, data
->ctx
, data
->lsp
,
6703 data
->arg
.lock_seqid
);
6705 rpc_put_task_async(task
);
6706 dprintk("%s: cancelling lock!\n", __func__
);
6708 nfs_free_seqid(data
->arg
.lock_seqid
);
6709 nfs4_put_lock_state(data
->lsp
);
6710 put_nfs_open_context(data
->ctx
);
6712 dprintk("%s: done!\n", __func__
);
6715 static const struct rpc_call_ops nfs4_lock_ops
= {
6716 .rpc_call_prepare
= nfs4_lock_prepare
,
6717 .rpc_call_done
= nfs4_lock_done
,
6718 .rpc_release
= nfs4_lock_release
,
6721 static void nfs4_handle_setlk_error(struct nfs_server
*server
, struct nfs4_lock_state
*lsp
, int new_lock_owner
, int error
)
6724 case -NFS4ERR_ADMIN_REVOKED
:
6725 case -NFS4ERR_EXPIRED
:
6726 case -NFS4ERR_BAD_STATEID
:
6727 lsp
->ls_seqid
.flags
&= ~NFS_SEQID_CONFIRMED
;
6728 if (new_lock_owner
!= 0 ||
6729 test_bit(NFS_LOCK_INITIALIZED
, &lsp
->ls_flags
) != 0)
6730 nfs4_schedule_stateid_recovery(server
, lsp
->ls_state
);
6732 case -NFS4ERR_STALE_STATEID
:
6733 lsp
->ls_seqid
.flags
&= ~NFS_SEQID_CONFIRMED
;
6734 nfs4_schedule_lease_recovery(server
->nfs_client
);
6738 static int _nfs4_do_setlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*fl
, int recovery_type
)
6740 struct nfs4_lockdata
*data
;
6741 struct rpc_task
*task
;
6742 struct rpc_message msg
= {
6743 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOCK
],
6744 .rpc_cred
= state
->owner
->so_cred
,
6746 struct rpc_task_setup task_setup_data
= {
6747 .rpc_client
= NFS_CLIENT(state
->inode
),
6748 .rpc_message
= &msg
,
6749 .callback_ops
= &nfs4_lock_ops
,
6750 .workqueue
= nfsiod_workqueue
,
6751 .flags
= RPC_TASK_ASYNC
,
6755 dprintk("%s: begin!\n", __func__
);
6756 data
= nfs4_alloc_lockdata(fl
, nfs_file_open_context(fl
->fl_file
),
6757 fl
->fl_u
.nfs4_fl
.owner
,
6758 recovery_type
== NFS_LOCK_NEW
? GFP_KERNEL
: GFP_NOFS
);
6762 data
->arg
.block
= 1;
6763 nfs4_init_sequence(&data
->arg
.seq_args
, &data
->res
.seq_res
, 1,
6764 recovery_type
> NFS_LOCK_NEW
);
6765 msg
.rpc_argp
= &data
->arg
;
6766 msg
.rpc_resp
= &data
->res
;
6767 task_setup_data
.callback_data
= data
;
6768 if (recovery_type
> NFS_LOCK_NEW
) {
6769 if (recovery_type
== NFS_LOCK_RECLAIM
)
6770 data
->arg
.reclaim
= NFS_LOCK_RECLAIM
;
6772 data
->arg
.new_lock
= 1;
6773 task
= rpc_run_task(&task_setup_data
);
6775 return PTR_ERR(task
);
6776 ret
= rpc_wait_for_completion_task(task
);
6778 ret
= data
->rpc_status
;
6780 nfs4_handle_setlk_error(data
->server
, data
->lsp
,
6781 data
->arg
.new_lock_owner
, ret
);
6783 data
->cancelled
= true;
6785 dprintk("%s: done, ret = %d!\n", __func__
, ret
);
6786 trace_nfs4_set_lock(fl
, state
, &data
->res
.stateid
, cmd
, ret
);
6790 static int nfs4_lock_reclaim(struct nfs4_state
*state
, struct file_lock
*request
)
6792 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
6793 struct nfs4_exception exception
= {
6794 .inode
= state
->inode
,
6799 /* Cache the lock if possible... */
6800 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) != 0)
6802 err
= _nfs4_do_setlk(state
, F_SETLK
, request
, NFS_LOCK_RECLAIM
);
6803 if (err
!= -NFS4ERR_DELAY
)
6805 nfs4_handle_exception(server
, err
, &exception
);
6806 } while (exception
.retry
);
6810 static int nfs4_lock_expired(struct nfs4_state
*state
, struct file_lock
*request
)
6812 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
6813 struct nfs4_exception exception
= {
6814 .inode
= state
->inode
,
6818 err
= nfs4_set_lock_state(state
, request
);
6821 if (!recover_lost_locks
) {
6822 set_bit(NFS_LOCK_LOST
, &request
->fl_u
.nfs4_fl
.owner
->ls_flags
);
6826 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) != 0)
6828 err
= _nfs4_do_setlk(state
, F_SETLK
, request
, NFS_LOCK_EXPIRED
);
6832 case -NFS4ERR_GRACE
:
6833 case -NFS4ERR_DELAY
:
6834 nfs4_handle_exception(server
, err
, &exception
);
6837 } while (exception
.retry
);
6842 #if defined(CONFIG_NFS_V4_1)
6843 static int nfs41_lock_expired(struct nfs4_state
*state
, struct file_lock
*request
)
6845 struct nfs4_lock_state
*lsp
;
6848 status
= nfs4_set_lock_state(state
, request
);
6851 lsp
= request
->fl_u
.nfs4_fl
.owner
;
6852 if (test_bit(NFS_LOCK_INITIALIZED
, &lsp
->ls_flags
) ||
6853 test_bit(NFS_LOCK_LOST
, &lsp
->ls_flags
))
6855 return nfs4_lock_expired(state
, request
);
6859 static int _nfs4_proc_setlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
6861 struct nfs_inode
*nfsi
= NFS_I(state
->inode
);
6862 struct nfs4_state_owner
*sp
= state
->owner
;
6863 unsigned char fl_flags
= request
->fl_flags
;
6866 request
->fl_flags
|= FL_ACCESS
;
6867 status
= locks_lock_inode_wait(state
->inode
, request
);
6870 mutex_lock(&sp
->so_delegreturn_mutex
);
6871 down_read(&nfsi
->rwsem
);
6872 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
)) {
6873 /* Yes: cache locks! */
6874 /* ...but avoid races with delegation recall... */
6875 request
->fl_flags
= fl_flags
& ~FL_SLEEP
;
6876 status
= locks_lock_inode_wait(state
->inode
, request
);
6877 up_read(&nfsi
->rwsem
);
6878 mutex_unlock(&sp
->so_delegreturn_mutex
);
6881 up_read(&nfsi
->rwsem
);
6882 mutex_unlock(&sp
->so_delegreturn_mutex
);
6883 status
= _nfs4_do_setlk(state
, cmd
, request
, NFS_LOCK_NEW
);
6885 request
->fl_flags
= fl_flags
;
6889 static int nfs4_proc_setlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
6891 struct nfs4_exception exception
= {
6893 .inode
= state
->inode
,
6894 .interruptible
= true,
6899 err
= _nfs4_proc_setlk(state
, cmd
, request
);
6900 if (err
== -NFS4ERR_DENIED
)
6902 err
= nfs4_handle_exception(NFS_SERVER(state
->inode
),
6904 } while (exception
.retry
);
6908 #define NFS4_LOCK_MINTIMEOUT (1 * HZ)
6909 #define NFS4_LOCK_MAXTIMEOUT (30 * HZ)
6912 nfs4_retry_setlk_simple(struct nfs4_state
*state
, int cmd
,
6913 struct file_lock
*request
)
6915 int status
= -ERESTARTSYS
;
6916 unsigned long timeout
= NFS4_LOCK_MINTIMEOUT
;
6918 while(!signalled()) {
6919 status
= nfs4_proc_setlk(state
, cmd
, request
);
6920 if ((status
!= -EAGAIN
) || IS_SETLK(cmd
))
6922 freezable_schedule_timeout_interruptible(timeout
);
6924 timeout
= min_t(unsigned long, NFS4_LOCK_MAXTIMEOUT
, timeout
);
6925 status
= -ERESTARTSYS
;
6930 #ifdef CONFIG_NFS_V4_1
6931 struct nfs4_lock_waiter
{
6932 struct task_struct
*task
;
6933 struct inode
*inode
;
6934 struct nfs_lowner
*owner
;
6939 nfs4_wake_lock_waiter(wait_queue_entry_t
*wait
, unsigned int mode
, int flags
, void *key
)
6942 struct nfs4_lock_waiter
*waiter
= wait
->private;
6944 /* NULL key means to wake up everyone */
6946 struct cb_notify_lock_args
*cbnl
= key
;
6947 struct nfs_lowner
*lowner
= &cbnl
->cbnl_owner
,
6948 *wowner
= waiter
->owner
;
6950 /* Only wake if the callback was for the same owner. */
6951 if (lowner
->id
!= wowner
->id
|| lowner
->s_dev
!= wowner
->s_dev
)
6954 /* Make sure it's for the right inode */
6955 if (nfs_compare_fh(NFS_FH(waiter
->inode
), &cbnl
->cbnl_fh
))
6958 waiter
->notified
= true;
6961 /* override "private" so we can use default_wake_function */
6962 wait
->private = waiter
->task
;
6963 ret
= autoremove_wake_function(wait
, mode
, flags
, key
);
6964 wait
->private = waiter
;
6969 nfs4_retry_setlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
6971 int status
= -ERESTARTSYS
;
6972 unsigned long flags
;
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 .notified
= false };
6984 wait_queue_entry_t wait
;
6986 /* Don't bother with waitqueue if we don't expect a callback */
6987 if (!test_bit(NFS_STATE_MAY_NOTIFY_LOCK
, &state
->flags
))
6988 return nfs4_retry_setlk_simple(state
, cmd
, request
);
6991 wait
.private = &waiter
;
6992 wait
.func
= nfs4_wake_lock_waiter
;
6993 add_wait_queue(q
, &wait
);
6995 while(!signalled()) {
6996 waiter
.notified
= false;
6997 status
= nfs4_proc_setlk(state
, cmd
, request
);
6998 if ((status
!= -EAGAIN
) || IS_SETLK(cmd
))
7001 status
= -ERESTARTSYS
;
7002 spin_lock_irqsave(&q
->lock
, flags
);
7003 if (waiter
.notified
) {
7004 spin_unlock_irqrestore(&q
->lock
, flags
);
7007 set_current_state(TASK_INTERRUPTIBLE
);
7008 spin_unlock_irqrestore(&q
->lock
, flags
);
7010 freezable_schedule_timeout(NFS4_LOCK_MAXTIMEOUT
);
7013 finish_wait(q
, &wait
);
7016 #else /* !CONFIG_NFS_V4_1 */
7018 nfs4_retry_setlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
7020 return nfs4_retry_setlk_simple(state
, cmd
, request
);
7025 nfs4_proc_lock(struct file
*filp
, int cmd
, struct file_lock
*request
)
7027 struct nfs_open_context
*ctx
;
7028 struct nfs4_state
*state
;
7031 /* verify open state */
7032 ctx
= nfs_file_open_context(filp
);
7035 if (IS_GETLK(cmd
)) {
7037 return nfs4_proc_getlk(state
, F_GETLK
, request
);
7041 if (!(IS_SETLK(cmd
) || IS_SETLKW(cmd
)))
7044 if (request
->fl_type
== F_UNLCK
) {
7046 return nfs4_proc_unlck(state
, cmd
, request
);
7053 if ((request
->fl_flags
& FL_POSIX
) &&
7054 !test_bit(NFS_STATE_POSIX_LOCKS
, &state
->flags
))
7058 * Don't rely on the VFS having checked the file open mode,
7059 * since it won't do this for flock() locks.
7061 switch (request
->fl_type
) {
7063 if (!(filp
->f_mode
& FMODE_READ
))
7067 if (!(filp
->f_mode
& FMODE_WRITE
))
7071 status
= nfs4_set_lock_state(state
, request
);
7075 return nfs4_retry_setlk(state
, cmd
, request
);
7078 int nfs4_lock_delegation_recall(struct file_lock
*fl
, struct nfs4_state
*state
, const nfs4_stateid
*stateid
)
7080 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
7083 err
= nfs4_set_lock_state(state
, fl
);
7086 err
= _nfs4_do_setlk(state
, F_SETLK
, fl
, NFS_LOCK_NEW
);
7087 return nfs4_handle_delegation_recall_error(server
, state
, stateid
, fl
, err
);
7090 struct nfs_release_lockowner_data
{
7091 struct nfs4_lock_state
*lsp
;
7092 struct nfs_server
*server
;
7093 struct nfs_release_lockowner_args args
;
7094 struct nfs_release_lockowner_res res
;
7095 unsigned long timestamp
;
7098 static void nfs4_release_lockowner_prepare(struct rpc_task
*task
, void *calldata
)
7100 struct nfs_release_lockowner_data
*data
= calldata
;
7101 struct nfs_server
*server
= data
->server
;
7102 nfs4_setup_sequence(server
->nfs_client
, &data
->args
.seq_args
,
7103 &data
->res
.seq_res
, task
);
7104 data
->args
.lock_owner
.clientid
= server
->nfs_client
->cl_clientid
;
7105 data
->timestamp
= jiffies
;
7108 static void nfs4_release_lockowner_done(struct rpc_task
*task
, void *calldata
)
7110 struct nfs_release_lockowner_data
*data
= calldata
;
7111 struct nfs_server
*server
= data
->server
;
7113 nfs40_sequence_done(task
, &data
->res
.seq_res
);
7115 switch (task
->tk_status
) {
7117 renew_lease(server
, data
->timestamp
);
7119 case -NFS4ERR_STALE_CLIENTID
:
7120 case -NFS4ERR_EXPIRED
:
7121 nfs4_schedule_lease_recovery(server
->nfs_client
);
7123 case -NFS4ERR_LEASE_MOVED
:
7124 case -NFS4ERR_DELAY
:
7125 if (nfs4_async_handle_error(task
, server
,
7126 NULL
, NULL
) == -EAGAIN
)
7127 rpc_restart_call_prepare(task
);
7131 static void nfs4_release_lockowner_release(void *calldata
)
7133 struct nfs_release_lockowner_data
*data
= calldata
;
7134 nfs4_free_lock_state(data
->server
, data
->lsp
);
7138 static const struct rpc_call_ops nfs4_release_lockowner_ops
= {
7139 .rpc_call_prepare
= nfs4_release_lockowner_prepare
,
7140 .rpc_call_done
= nfs4_release_lockowner_done
,
7141 .rpc_release
= nfs4_release_lockowner_release
,
7145 nfs4_release_lockowner(struct nfs_server
*server
, struct nfs4_lock_state
*lsp
)
7147 struct nfs_release_lockowner_data
*data
;
7148 struct rpc_message msg
= {
7149 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RELEASE_LOCKOWNER
],
7152 if (server
->nfs_client
->cl_mvops
->minor_version
!= 0)
7155 data
= kmalloc(sizeof(*data
), GFP_NOFS
);
7159 data
->server
= server
;
7160 data
->args
.lock_owner
.clientid
= server
->nfs_client
->cl_clientid
;
7161 data
->args
.lock_owner
.id
= lsp
->ls_seqid
.owner_id
;
7162 data
->args
.lock_owner
.s_dev
= server
->s_dev
;
7164 msg
.rpc_argp
= &data
->args
;
7165 msg
.rpc_resp
= &data
->res
;
7166 nfs4_init_sequence(&data
->args
.seq_args
, &data
->res
.seq_res
, 0, 0);
7167 rpc_call_async(server
->client
, &msg
, 0, &nfs4_release_lockowner_ops
, data
);
7170 #define XATTR_NAME_NFSV4_ACL "system.nfs4_acl"
7172 static int nfs4_xattr_set_nfs4_acl(const struct xattr_handler
*handler
,
7173 struct dentry
*unused
, struct inode
*inode
,
7174 const char *key
, const void *buf
,
7175 size_t buflen
, int flags
)
7177 return nfs4_proc_set_acl(inode
, buf
, buflen
);
7180 static int nfs4_xattr_get_nfs4_acl(const struct xattr_handler
*handler
,
7181 struct dentry
*unused
, struct inode
*inode
,
7182 const char *key
, void *buf
, size_t buflen
)
7184 return nfs4_proc_get_acl(inode
, buf
, buflen
);
7187 static bool nfs4_xattr_list_nfs4_acl(struct dentry
*dentry
)
7189 return nfs4_server_supports_acls(NFS_SERVER(d_inode(dentry
)));
7192 #ifdef CONFIG_NFS_V4_SECURITY_LABEL
7194 static int nfs4_xattr_set_nfs4_label(const struct xattr_handler
*handler
,
7195 struct dentry
*unused
, struct inode
*inode
,
7196 const char *key
, const void *buf
,
7197 size_t buflen
, int flags
)
7199 if (security_ismaclabel(key
))
7200 return nfs4_set_security_label(inode
, buf
, buflen
);
7205 static int nfs4_xattr_get_nfs4_label(const struct xattr_handler
*handler
,
7206 struct dentry
*unused
, struct inode
*inode
,
7207 const char *key
, void *buf
, size_t buflen
)
7209 if (security_ismaclabel(key
))
7210 return nfs4_get_security_label(inode
, buf
, buflen
);
7215 nfs4_listxattr_nfs4_label(struct inode
*inode
, char *list
, size_t list_len
)
7219 if (nfs_server_capable(inode
, NFS_CAP_SECURITY_LABEL
)) {
7220 len
= security_inode_listsecurity(inode
, list
, list_len
);
7221 if (list_len
&& len
> list_len
)
7227 static const struct xattr_handler nfs4_xattr_nfs4_label_handler
= {
7228 .prefix
= XATTR_SECURITY_PREFIX
,
7229 .get
= nfs4_xattr_get_nfs4_label
,
7230 .set
= nfs4_xattr_set_nfs4_label
,
7236 nfs4_listxattr_nfs4_label(struct inode
*inode
, char *list
, size_t list_len
)
7244 * nfs_fhget will use either the mounted_on_fileid or the fileid
7246 static void nfs_fixup_referral_attributes(struct nfs_fattr
*fattr
)
7248 if (!(((fattr
->valid
& NFS_ATTR_FATTR_MOUNTED_ON_FILEID
) ||
7249 (fattr
->valid
& NFS_ATTR_FATTR_FILEID
)) &&
7250 (fattr
->valid
& NFS_ATTR_FATTR_FSID
) &&
7251 (fattr
->valid
& NFS_ATTR_FATTR_V4_LOCATIONS
)))
7254 fattr
->valid
|= NFS_ATTR_FATTR_TYPE
| NFS_ATTR_FATTR_MODE
|
7255 NFS_ATTR_FATTR_NLINK
| NFS_ATTR_FATTR_V4_REFERRAL
;
7256 fattr
->mode
= S_IFDIR
| S_IRUGO
| S_IXUGO
;
7260 static int _nfs4_proc_fs_locations(struct rpc_clnt
*client
, struct inode
*dir
,
7261 const struct qstr
*name
,
7262 struct nfs4_fs_locations
*fs_locations
,
7265 struct nfs_server
*server
= NFS_SERVER(dir
);
7267 struct nfs4_fs_locations_arg args
= {
7268 .dir_fh
= NFS_FH(dir
),
7273 struct nfs4_fs_locations_res res
= {
7274 .fs_locations
= fs_locations
,
7276 struct rpc_message msg
= {
7277 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_FS_LOCATIONS
],
7283 dprintk("%s: start\n", __func__
);
7285 bitmask
[0] = nfs4_fattr_bitmap
[0] | FATTR4_WORD0_FS_LOCATIONS
;
7286 bitmask
[1] = nfs4_fattr_bitmap
[1];
7288 /* Ask for the fileid of the absent filesystem if mounted_on_fileid
7289 * is not supported */
7290 if (NFS_SERVER(dir
)->attr_bitmask
[1] & FATTR4_WORD1_MOUNTED_ON_FILEID
)
7291 bitmask
[0] &= ~FATTR4_WORD0_FILEID
;
7293 bitmask
[1] &= ~FATTR4_WORD1_MOUNTED_ON_FILEID
;
7295 nfs_fattr_init(&fs_locations
->fattr
);
7296 fs_locations
->server
= server
;
7297 fs_locations
->nlocations
= 0;
7298 status
= nfs4_call_sync(client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
7299 dprintk("%s: returned status = %d\n", __func__
, status
);
7303 int nfs4_proc_fs_locations(struct rpc_clnt
*client
, struct inode
*dir
,
7304 const struct qstr
*name
,
7305 struct nfs4_fs_locations
*fs_locations
,
7308 struct nfs4_exception exception
= {
7309 .interruptible
= true,
7313 err
= _nfs4_proc_fs_locations(client
, dir
, name
,
7314 fs_locations
, page
);
7315 trace_nfs4_get_fs_locations(dir
, name
, err
);
7316 err
= nfs4_handle_exception(NFS_SERVER(dir
), err
,
7318 } while (exception
.retry
);
7323 * This operation also signals the server that this client is
7324 * performing migration recovery. The server can stop returning
7325 * NFS4ERR_LEASE_MOVED to this client. A RENEW operation is
7326 * appended to this compound to identify the client ID which is
7327 * performing recovery.
7329 static int _nfs40_proc_get_locations(struct inode
*inode
,
7330 struct nfs4_fs_locations
*locations
,
7331 struct page
*page
, const struct cred
*cred
)
7333 struct nfs_server
*server
= NFS_SERVER(inode
);
7334 struct rpc_clnt
*clnt
= server
->client
;
7336 [0] = FATTR4_WORD0_FSID
| FATTR4_WORD0_FS_LOCATIONS
,
7338 struct nfs4_fs_locations_arg args
= {
7339 .clientid
= server
->nfs_client
->cl_clientid
,
7340 .fh
= NFS_FH(inode
),
7343 .migration
= 1, /* skip LOOKUP */
7344 .renew
= 1, /* append RENEW */
7346 struct nfs4_fs_locations_res res
= {
7347 .fs_locations
= locations
,
7351 struct rpc_message msg
= {
7352 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_FS_LOCATIONS
],
7357 unsigned long now
= jiffies
;
7360 nfs_fattr_init(&locations
->fattr
);
7361 locations
->server
= server
;
7362 locations
->nlocations
= 0;
7364 nfs4_init_sequence(&args
.seq_args
, &res
.seq_res
, 0, 1);
7365 status
= nfs4_call_sync_sequence(clnt
, server
, &msg
,
7366 &args
.seq_args
, &res
.seq_res
);
7370 renew_lease(server
, now
);
7374 #ifdef CONFIG_NFS_V4_1
7377 * This operation also signals the server that this client is
7378 * performing migration recovery. The server can stop asserting
7379 * SEQ4_STATUS_LEASE_MOVED for this client. The client ID
7380 * performing this operation is identified in the SEQUENCE
7381 * operation in this compound.
7383 * When the client supports GETATTR(fs_locations_info), it can
7384 * be plumbed in here.
7386 static int _nfs41_proc_get_locations(struct inode
*inode
,
7387 struct nfs4_fs_locations
*locations
,
7388 struct page
*page
, const struct cred
*cred
)
7390 struct nfs_server
*server
= NFS_SERVER(inode
);
7391 struct rpc_clnt
*clnt
= server
->client
;
7393 [0] = FATTR4_WORD0_FSID
| FATTR4_WORD0_FS_LOCATIONS
,
7395 struct nfs4_fs_locations_arg args
= {
7396 .fh
= NFS_FH(inode
),
7399 .migration
= 1, /* skip LOOKUP */
7401 struct nfs4_fs_locations_res res
= {
7402 .fs_locations
= locations
,
7405 struct rpc_message msg
= {
7406 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_FS_LOCATIONS
],
7413 nfs_fattr_init(&locations
->fattr
);
7414 locations
->server
= server
;
7415 locations
->nlocations
= 0;
7417 nfs4_init_sequence(&args
.seq_args
, &res
.seq_res
, 0, 1);
7418 status
= nfs4_call_sync_sequence(clnt
, server
, &msg
,
7419 &args
.seq_args
, &res
.seq_res
);
7420 if (status
== NFS4_OK
&&
7421 res
.seq_res
.sr_status_flags
& SEQ4_STATUS_LEASE_MOVED
)
7422 status
= -NFS4ERR_LEASE_MOVED
;
7426 #endif /* CONFIG_NFS_V4_1 */
7429 * nfs4_proc_get_locations - discover locations for a migrated FSID
7430 * @inode: inode on FSID that is migrating
7431 * @locations: result of query
7433 * @cred: credential to use for this operation
7435 * Returns NFS4_OK on success, a negative NFS4ERR status code if the
7436 * operation failed, or a negative errno if a local error occurred.
7438 * On success, "locations" is filled in, but if the server has
7439 * no locations information, NFS_ATTR_FATTR_V4_LOCATIONS is not
7442 * -NFS4ERR_LEASE_MOVED is returned if the server still has leases
7443 * from this client that require migration recovery.
7445 int nfs4_proc_get_locations(struct inode
*inode
,
7446 struct nfs4_fs_locations
*locations
,
7447 struct page
*page
, const struct cred
*cred
)
7449 struct nfs_server
*server
= NFS_SERVER(inode
);
7450 struct nfs_client
*clp
= server
->nfs_client
;
7451 const struct nfs4_mig_recovery_ops
*ops
=
7452 clp
->cl_mvops
->mig_recovery_ops
;
7453 struct nfs4_exception exception
= {
7454 .interruptible
= true,
7458 dprintk("%s: FSID %llx:%llx on \"%s\"\n", __func__
,
7459 (unsigned long long)server
->fsid
.major
,
7460 (unsigned long long)server
->fsid
.minor
,
7462 nfs_display_fhandle(NFS_FH(inode
), __func__
);
7465 status
= ops
->get_locations(inode
, locations
, page
, cred
);
7466 if (status
!= -NFS4ERR_DELAY
)
7468 nfs4_handle_exception(server
, status
, &exception
);
7469 } while (exception
.retry
);
7474 * This operation also signals the server that this client is
7475 * performing "lease moved" recovery. The server can stop
7476 * returning NFS4ERR_LEASE_MOVED to this client. A RENEW operation
7477 * is appended to this compound to identify the client ID which is
7478 * performing recovery.
7480 static int _nfs40_proc_fsid_present(struct inode
*inode
, const struct cred
*cred
)
7482 struct nfs_server
*server
= NFS_SERVER(inode
);
7483 struct nfs_client
*clp
= NFS_SERVER(inode
)->nfs_client
;
7484 struct rpc_clnt
*clnt
= server
->client
;
7485 struct nfs4_fsid_present_arg args
= {
7486 .fh
= NFS_FH(inode
),
7487 .clientid
= clp
->cl_clientid
,
7488 .renew
= 1, /* append RENEW */
7490 struct nfs4_fsid_present_res res
= {
7493 struct rpc_message msg
= {
7494 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_FSID_PRESENT
],
7499 unsigned long now
= jiffies
;
7502 res
.fh
= nfs_alloc_fhandle();
7506 nfs4_init_sequence(&args
.seq_args
, &res
.seq_res
, 0, 1);
7507 status
= nfs4_call_sync_sequence(clnt
, server
, &msg
,
7508 &args
.seq_args
, &res
.seq_res
);
7509 nfs_free_fhandle(res
.fh
);
7513 do_renew_lease(clp
, now
);
7517 #ifdef CONFIG_NFS_V4_1
7520 * This operation also signals the server that this client is
7521 * performing "lease moved" recovery. The server can stop asserting
7522 * SEQ4_STATUS_LEASE_MOVED for this client. The client ID performing
7523 * this operation is identified in the SEQUENCE operation in this
7526 static int _nfs41_proc_fsid_present(struct inode
*inode
, const struct cred
*cred
)
7528 struct nfs_server
*server
= NFS_SERVER(inode
);
7529 struct rpc_clnt
*clnt
= server
->client
;
7530 struct nfs4_fsid_present_arg args
= {
7531 .fh
= NFS_FH(inode
),
7533 struct nfs4_fsid_present_res res
= {
7535 struct rpc_message msg
= {
7536 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_FSID_PRESENT
],
7543 res
.fh
= nfs_alloc_fhandle();
7547 nfs4_init_sequence(&args
.seq_args
, &res
.seq_res
, 0, 1);
7548 status
= nfs4_call_sync_sequence(clnt
, server
, &msg
,
7549 &args
.seq_args
, &res
.seq_res
);
7550 nfs_free_fhandle(res
.fh
);
7551 if (status
== NFS4_OK
&&
7552 res
.seq_res
.sr_status_flags
& SEQ4_STATUS_LEASE_MOVED
)
7553 status
= -NFS4ERR_LEASE_MOVED
;
7557 #endif /* CONFIG_NFS_V4_1 */
7560 * nfs4_proc_fsid_present - Is this FSID present or absent on server?
7561 * @inode: inode on FSID to check
7562 * @cred: credential to use for this operation
7564 * Server indicates whether the FSID is present, moved, or not
7565 * recognized. This operation is necessary to clear a LEASE_MOVED
7566 * condition for this client ID.
7568 * Returns NFS4_OK if the FSID is present on this server,
7569 * -NFS4ERR_MOVED if the FSID is no longer present, a negative
7570 * NFS4ERR code if some error occurred on the server, or a
7571 * negative errno if a local failure occurred.
7573 int nfs4_proc_fsid_present(struct inode
*inode
, const struct cred
*cred
)
7575 struct nfs_server
*server
= NFS_SERVER(inode
);
7576 struct nfs_client
*clp
= server
->nfs_client
;
7577 const struct nfs4_mig_recovery_ops
*ops
=
7578 clp
->cl_mvops
->mig_recovery_ops
;
7579 struct nfs4_exception exception
= {
7580 .interruptible
= true,
7584 dprintk("%s: FSID %llx:%llx on \"%s\"\n", __func__
,
7585 (unsigned long long)server
->fsid
.major
,
7586 (unsigned long long)server
->fsid
.minor
,
7588 nfs_display_fhandle(NFS_FH(inode
), __func__
);
7591 status
= ops
->fsid_present(inode
, cred
);
7592 if (status
!= -NFS4ERR_DELAY
)
7594 nfs4_handle_exception(server
, status
, &exception
);
7595 } while (exception
.retry
);
7600 * If 'use_integrity' is true and the state managment nfs_client
7601 * cl_rpcclient is using krb5i/p, use the integrity protected cl_rpcclient
7602 * and the machine credential as per RFC3530bis and RFC5661 Security
7603 * Considerations sections. Otherwise, just use the user cred with the
7604 * filesystem's rpc_client.
7606 static int _nfs4_proc_secinfo(struct inode
*dir
, const struct qstr
*name
, struct nfs4_secinfo_flavors
*flavors
, bool use_integrity
)
7609 struct nfs4_secinfo_arg args
= {
7610 .dir_fh
= NFS_FH(dir
),
7613 struct nfs4_secinfo_res res
= {
7616 struct rpc_message msg
= {
7617 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SECINFO
],
7621 struct rpc_clnt
*clnt
= NFS_SERVER(dir
)->client
;
7622 const struct cred
*cred
= NULL
;
7624 if (use_integrity
) {
7625 clnt
= NFS_SERVER(dir
)->nfs_client
->cl_rpcclient
;
7626 cred
= nfs4_get_clid_cred(NFS_SERVER(dir
)->nfs_client
);
7627 msg
.rpc_cred
= cred
;
7630 dprintk("NFS call secinfo %s\n", name
->name
);
7632 nfs4_state_protect(NFS_SERVER(dir
)->nfs_client
,
7633 NFS_SP4_MACH_CRED_SECINFO
, &clnt
, &msg
);
7635 status
= nfs4_call_sync(clnt
, NFS_SERVER(dir
), &msg
, &args
.seq_args
,
7637 dprintk("NFS reply secinfo: %d\n", status
);
7644 int nfs4_proc_secinfo(struct inode
*dir
, const struct qstr
*name
,
7645 struct nfs4_secinfo_flavors
*flavors
)
7647 struct nfs4_exception exception
= {
7648 .interruptible
= true,
7652 err
= -NFS4ERR_WRONGSEC
;
7654 /* try to use integrity protection with machine cred */
7655 if (_nfs4_is_integrity_protected(NFS_SERVER(dir
)->nfs_client
))
7656 err
= _nfs4_proc_secinfo(dir
, name
, flavors
, true);
7659 * if unable to use integrity protection, or SECINFO with
7660 * integrity protection returns NFS4ERR_WRONGSEC (which is
7661 * disallowed by spec, but exists in deployed servers) use
7662 * the current filesystem's rpc_client and the user cred.
7664 if (err
== -NFS4ERR_WRONGSEC
)
7665 err
= _nfs4_proc_secinfo(dir
, name
, flavors
, false);
7667 trace_nfs4_secinfo(dir
, name
, err
);
7668 err
= nfs4_handle_exception(NFS_SERVER(dir
), err
,
7670 } while (exception
.retry
);
7674 #ifdef CONFIG_NFS_V4_1
7676 * Check the exchange flags returned by the server for invalid flags, having
7677 * both PNFS and NON_PNFS flags set, and not having one of NON_PNFS, PNFS, or
7680 static int nfs4_check_cl_exchange_flags(u32 flags
)
7682 if (flags
& ~EXCHGID4_FLAG_MASK_R
)
7684 if ((flags
& EXCHGID4_FLAG_USE_PNFS_MDS
) &&
7685 (flags
& EXCHGID4_FLAG_USE_NON_PNFS
))
7687 if (!(flags
& (EXCHGID4_FLAG_MASK_PNFS
)))
7691 return -NFS4ERR_INVAL
;
7695 nfs41_same_server_scope(struct nfs41_server_scope
*a
,
7696 struct nfs41_server_scope
*b
)
7698 if (a
->server_scope_sz
!= b
->server_scope_sz
)
7700 return memcmp(a
->server_scope
, b
->server_scope
, a
->server_scope_sz
) == 0;
7704 nfs4_bind_one_conn_to_session_done(struct rpc_task
*task
, void *calldata
)
7708 static const struct rpc_call_ops nfs4_bind_one_conn_to_session_ops
= {
7709 .rpc_call_done
= &nfs4_bind_one_conn_to_session_done
,
7713 * nfs4_proc_bind_one_conn_to_session()
7715 * The 4.1 client currently uses the same TCP connection for the
7716 * fore and backchannel.
7719 int nfs4_proc_bind_one_conn_to_session(struct rpc_clnt
*clnt
,
7720 struct rpc_xprt
*xprt
,
7721 struct nfs_client
*clp
,
7722 const struct cred
*cred
)
7725 struct nfs41_bind_conn_to_session_args args
= {
7727 .dir
= NFS4_CDFC4_FORE_OR_BOTH
,
7729 struct nfs41_bind_conn_to_session_res res
;
7730 struct rpc_message msg
= {
7732 &nfs4_procedures
[NFSPROC4_CLNT_BIND_CONN_TO_SESSION
],
7737 struct rpc_task_setup task_setup_data
= {
7740 .callback_ops
= &nfs4_bind_one_conn_to_session_ops
,
7741 .rpc_message
= &msg
,
7742 .flags
= RPC_TASK_TIMEOUT
,
7744 struct rpc_task
*task
;
7746 nfs4_copy_sessionid(&args
.sessionid
, &clp
->cl_session
->sess_id
);
7747 if (!(clp
->cl_session
->flags
& SESSION4_BACK_CHAN
))
7748 args
.dir
= NFS4_CDFC4_FORE
;
7750 /* Do not set the backchannel flag unless this is clnt->cl_xprt */
7751 if (xprt
!= rcu_access_pointer(clnt
->cl_xprt
))
7752 args
.dir
= NFS4_CDFC4_FORE
;
7754 task
= rpc_run_task(&task_setup_data
);
7755 if (!IS_ERR(task
)) {
7756 status
= task
->tk_status
;
7759 status
= PTR_ERR(task
);
7760 trace_nfs4_bind_conn_to_session(clp
, status
);
7762 if (memcmp(res
.sessionid
.data
,
7763 clp
->cl_session
->sess_id
.data
, NFS4_MAX_SESSIONID_LEN
)) {
7764 dprintk("NFS: %s: Session ID mismatch\n", __func__
);
7767 if ((res
.dir
& args
.dir
) != res
.dir
|| res
.dir
== 0) {
7768 dprintk("NFS: %s: Unexpected direction from server\n",
7772 if (res
.use_conn_in_rdma_mode
!= args
.use_conn_in_rdma_mode
) {
7773 dprintk("NFS: %s: Server returned RDMA mode = true\n",
7782 struct rpc_bind_conn_calldata
{
7783 struct nfs_client
*clp
;
7784 const struct cred
*cred
;
7788 nfs4_proc_bind_conn_to_session_callback(struct rpc_clnt
*clnt
,
7789 struct rpc_xprt
*xprt
,
7792 struct rpc_bind_conn_calldata
*p
= calldata
;
7794 return nfs4_proc_bind_one_conn_to_session(clnt
, xprt
, p
->clp
, p
->cred
);
7797 int nfs4_proc_bind_conn_to_session(struct nfs_client
*clp
, const struct cred
*cred
)
7799 struct rpc_bind_conn_calldata data
= {
7803 return rpc_clnt_iterate_for_each_xprt(clp
->cl_rpcclient
,
7804 nfs4_proc_bind_conn_to_session_callback
, &data
);
7808 * Minimum set of SP4_MACH_CRED operations from RFC 5661 in the enforce map
7809 * and operations we'd like to see to enable certain features in the allow map
7811 static const struct nfs41_state_protection nfs4_sp4_mach_cred_request
= {
7812 .how
= SP4_MACH_CRED
,
7813 .enforce
.u
.words
= {
7814 [1] = 1 << (OP_BIND_CONN_TO_SESSION
- 32) |
7815 1 << (OP_EXCHANGE_ID
- 32) |
7816 1 << (OP_CREATE_SESSION
- 32) |
7817 1 << (OP_DESTROY_SESSION
- 32) |
7818 1 << (OP_DESTROY_CLIENTID
- 32)
7821 [0] = 1 << (OP_CLOSE
) |
7822 1 << (OP_OPEN_DOWNGRADE
) |
7824 1 << (OP_DELEGRETURN
) |
7826 [1] = 1 << (OP_SECINFO
- 32) |
7827 1 << (OP_SECINFO_NO_NAME
- 32) |
7828 1 << (OP_LAYOUTRETURN
- 32) |
7829 1 << (OP_TEST_STATEID
- 32) |
7830 1 << (OP_FREE_STATEID
- 32) |
7831 1 << (OP_WRITE
- 32)
7836 * Select the state protection mode for client `clp' given the server results
7837 * from exchange_id in `sp'.
7839 * Returns 0 on success, negative errno otherwise.
7841 static int nfs4_sp4_select_mode(struct nfs_client
*clp
,
7842 struct nfs41_state_protection
*sp
)
7844 static const u32 supported_enforce
[NFS4_OP_MAP_NUM_WORDS
] = {
7845 [1] = 1 << (OP_BIND_CONN_TO_SESSION
- 32) |
7846 1 << (OP_EXCHANGE_ID
- 32) |
7847 1 << (OP_CREATE_SESSION
- 32) |
7848 1 << (OP_DESTROY_SESSION
- 32) |
7849 1 << (OP_DESTROY_CLIENTID
- 32)
7851 unsigned long flags
= 0;
7855 if (sp
->how
== SP4_MACH_CRED
) {
7856 /* Print state protect result */
7857 dfprintk(MOUNT
, "Server SP4_MACH_CRED support:\n");
7858 for (i
= 0; i
<= LAST_NFS4_OP
; i
++) {
7859 if (test_bit(i
, sp
->enforce
.u
.longs
))
7860 dfprintk(MOUNT
, " enforce op %d\n", i
);
7861 if (test_bit(i
, sp
->allow
.u
.longs
))
7862 dfprintk(MOUNT
, " allow op %d\n", i
);
7865 /* make sure nothing is on enforce list that isn't supported */
7866 for (i
= 0; i
< NFS4_OP_MAP_NUM_WORDS
; i
++) {
7867 if (sp
->enforce
.u
.words
[i
] & ~supported_enforce
[i
]) {
7868 dfprintk(MOUNT
, "sp4_mach_cred: disabled\n");
7875 * Minimal mode - state operations are allowed to use machine
7876 * credential. Note this already happens by default, so the
7877 * client doesn't have to do anything more than the negotiation.
7879 * NOTE: we don't care if EXCHANGE_ID is in the list -
7880 * we're already using the machine cred for exchange_id
7881 * and will never use a different cred.
7883 if (test_bit(OP_BIND_CONN_TO_SESSION
, sp
->enforce
.u
.longs
) &&
7884 test_bit(OP_CREATE_SESSION
, sp
->enforce
.u
.longs
) &&
7885 test_bit(OP_DESTROY_SESSION
, sp
->enforce
.u
.longs
) &&
7886 test_bit(OP_DESTROY_CLIENTID
, sp
->enforce
.u
.longs
)) {
7887 dfprintk(MOUNT
, "sp4_mach_cred:\n");
7888 dfprintk(MOUNT
, " minimal mode enabled\n");
7889 __set_bit(NFS_SP4_MACH_CRED_MINIMAL
, &flags
);
7891 dfprintk(MOUNT
, "sp4_mach_cred: disabled\n");
7896 if (test_bit(OP_CLOSE
, sp
->allow
.u
.longs
) &&
7897 test_bit(OP_OPEN_DOWNGRADE
, sp
->allow
.u
.longs
) &&
7898 test_bit(OP_DELEGRETURN
, sp
->allow
.u
.longs
) &&
7899 test_bit(OP_LOCKU
, sp
->allow
.u
.longs
)) {
7900 dfprintk(MOUNT
, " cleanup mode enabled\n");
7901 __set_bit(NFS_SP4_MACH_CRED_CLEANUP
, &flags
);
7904 if (test_bit(OP_LAYOUTRETURN
, sp
->allow
.u
.longs
)) {
7905 dfprintk(MOUNT
, " pnfs cleanup mode enabled\n");
7906 __set_bit(NFS_SP4_MACH_CRED_PNFS_CLEANUP
, &flags
);
7909 if (test_bit(OP_SECINFO
, sp
->allow
.u
.longs
) &&
7910 test_bit(OP_SECINFO_NO_NAME
, sp
->allow
.u
.longs
)) {
7911 dfprintk(MOUNT
, " secinfo mode enabled\n");
7912 __set_bit(NFS_SP4_MACH_CRED_SECINFO
, &flags
);
7915 if (test_bit(OP_TEST_STATEID
, sp
->allow
.u
.longs
) &&
7916 test_bit(OP_FREE_STATEID
, sp
->allow
.u
.longs
)) {
7917 dfprintk(MOUNT
, " stateid mode enabled\n");
7918 __set_bit(NFS_SP4_MACH_CRED_STATEID
, &flags
);
7921 if (test_bit(OP_WRITE
, sp
->allow
.u
.longs
)) {
7922 dfprintk(MOUNT
, " write mode enabled\n");
7923 __set_bit(NFS_SP4_MACH_CRED_WRITE
, &flags
);
7926 if (test_bit(OP_COMMIT
, sp
->allow
.u
.longs
)) {
7927 dfprintk(MOUNT
, " commit mode enabled\n");
7928 __set_bit(NFS_SP4_MACH_CRED_COMMIT
, &flags
);
7932 clp
->cl_sp4_flags
= flags
;
7936 struct nfs41_exchange_id_data
{
7937 struct nfs41_exchange_id_res res
;
7938 struct nfs41_exchange_id_args args
;
7941 static void nfs4_exchange_id_release(void *data
)
7943 struct nfs41_exchange_id_data
*cdata
=
7944 (struct nfs41_exchange_id_data
*)data
;
7946 nfs_put_client(cdata
->args
.client
);
7947 kfree(cdata
->res
.impl_id
);
7948 kfree(cdata
->res
.server_scope
);
7949 kfree(cdata
->res
.server_owner
);
7953 static const struct rpc_call_ops nfs4_exchange_id_call_ops
= {
7954 .rpc_release
= nfs4_exchange_id_release
,
7958 * _nfs4_proc_exchange_id()
7960 * Wrapper for EXCHANGE_ID operation.
7962 static struct rpc_task
*
7963 nfs4_run_exchange_id(struct nfs_client
*clp
, const struct cred
*cred
,
7964 u32 sp4_how
, struct rpc_xprt
*xprt
)
7966 struct rpc_message msg
= {
7967 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_EXCHANGE_ID
],
7970 struct rpc_task_setup task_setup_data
= {
7971 .rpc_client
= clp
->cl_rpcclient
,
7972 .callback_ops
= &nfs4_exchange_id_call_ops
,
7973 .rpc_message
= &msg
,
7974 .flags
= RPC_TASK_TIMEOUT
,
7976 struct nfs41_exchange_id_data
*calldata
;
7979 if (!refcount_inc_not_zero(&clp
->cl_count
))
7980 return ERR_PTR(-EIO
);
7983 calldata
= kzalloc(sizeof(*calldata
), GFP_NOFS
);
7987 nfs4_init_boot_verifier(clp
, &calldata
->args
.verifier
);
7989 status
= nfs4_init_uniform_client_string(clp
);
7993 calldata
->res
.server_owner
= kzalloc(sizeof(struct nfs41_server_owner
),
7996 if (unlikely(calldata
->res
.server_owner
== NULL
))
7999 calldata
->res
.server_scope
= kzalloc(sizeof(struct nfs41_server_scope
),
8001 if (unlikely(calldata
->res
.server_scope
== NULL
))
8002 goto out_server_owner
;
8004 calldata
->res
.impl_id
= kzalloc(sizeof(struct nfs41_impl_id
), GFP_NOFS
);
8005 if (unlikely(calldata
->res
.impl_id
== NULL
))
8006 goto out_server_scope
;
8010 calldata
->args
.state_protect
.how
= SP4_NONE
;
8014 calldata
->args
.state_protect
= nfs4_sp4_mach_cred_request
;
8024 task_setup_data
.rpc_xprt
= xprt
;
8025 task_setup_data
.flags
|= RPC_TASK_SOFTCONN
;
8026 memcpy(calldata
->args
.verifier
.data
, clp
->cl_confirm
.data
,
8027 sizeof(calldata
->args
.verifier
.data
));
8029 calldata
->args
.client
= clp
;
8030 calldata
->args
.flags
= EXCHGID4_FLAG_SUPP_MOVED_REFER
|
8031 EXCHGID4_FLAG_BIND_PRINC_STATEID
;
8032 #ifdef CONFIG_NFS_V4_1_MIGRATION
8033 calldata
->args
.flags
|= EXCHGID4_FLAG_SUPP_MOVED_MIGR
;
8035 msg
.rpc_argp
= &calldata
->args
;
8036 msg
.rpc_resp
= &calldata
->res
;
8037 task_setup_data
.callback_data
= calldata
;
8039 return rpc_run_task(&task_setup_data
);
8042 kfree(calldata
->res
.impl_id
);
8044 kfree(calldata
->res
.server_scope
);
8046 kfree(calldata
->res
.server_owner
);
8050 nfs_put_client(clp
);
8051 return ERR_PTR(status
);
8055 * _nfs4_proc_exchange_id()
8057 * Wrapper for EXCHANGE_ID operation.
8059 static int _nfs4_proc_exchange_id(struct nfs_client
*clp
, const struct cred
*cred
,
8062 struct rpc_task
*task
;
8063 struct nfs41_exchange_id_args
*argp
;
8064 struct nfs41_exchange_id_res
*resp
;
8067 task
= nfs4_run_exchange_id(clp
, cred
, sp4_how
, NULL
);
8069 return PTR_ERR(task
);
8071 argp
= task
->tk_msg
.rpc_argp
;
8072 resp
= task
->tk_msg
.rpc_resp
;
8073 status
= task
->tk_status
;
8077 status
= nfs4_check_cl_exchange_flags(resp
->flags
);
8081 status
= nfs4_sp4_select_mode(clp
, &resp
->state_protect
);
8085 clp
->cl_clientid
= resp
->clientid
;
8086 clp
->cl_exchange_flags
= resp
->flags
;
8087 clp
->cl_seqid
= resp
->seqid
;
8088 /* Client ID is not confirmed */
8089 if (!(resp
->flags
& EXCHGID4_FLAG_CONFIRMED_R
))
8090 clear_bit(NFS4_SESSION_ESTABLISHED
,
8091 &clp
->cl_session
->session_state
);
8093 if (clp
->cl_serverscope
!= NULL
&&
8094 !nfs41_same_server_scope(clp
->cl_serverscope
,
8095 resp
->server_scope
)) {
8096 dprintk("%s: server_scope mismatch detected\n",
8098 set_bit(NFS4CLNT_SERVER_SCOPE_MISMATCH
, &clp
->cl_state
);
8101 swap(clp
->cl_serverowner
, resp
->server_owner
);
8102 swap(clp
->cl_serverscope
, resp
->server_scope
);
8103 swap(clp
->cl_implid
, resp
->impl_id
);
8105 /* Save the EXCHANGE_ID verifier session trunk tests */
8106 memcpy(clp
->cl_confirm
.data
, argp
->verifier
.data
,
8107 sizeof(clp
->cl_confirm
.data
));
8109 trace_nfs4_exchange_id(clp
, status
);
8115 * nfs4_proc_exchange_id()
8117 * Returns zero, a negative errno, or a negative NFS4ERR status code.
8119 * Since the clientid has expired, all compounds using sessions
8120 * associated with the stale clientid will be returning
8121 * NFS4ERR_BADSESSION in the sequence operation, and will therefore
8122 * be in some phase of session reset.
8124 * Will attempt to negotiate SP4_MACH_CRED if krb5i / krb5p auth is used.
8126 int nfs4_proc_exchange_id(struct nfs_client
*clp
, const struct cred
*cred
)
8128 rpc_authflavor_t authflavor
= clp
->cl_rpcclient
->cl_auth
->au_flavor
;
8131 /* try SP4_MACH_CRED if krb5i/p */
8132 if (authflavor
== RPC_AUTH_GSS_KRB5I
||
8133 authflavor
== RPC_AUTH_GSS_KRB5P
) {
8134 status
= _nfs4_proc_exchange_id(clp
, cred
, SP4_MACH_CRED
);
8140 return _nfs4_proc_exchange_id(clp
, cred
, SP4_NONE
);
8144 * nfs4_test_session_trunk
8146 * This is an add_xprt_test() test function called from
8147 * rpc_clnt_setup_test_and_add_xprt.
8149 * The rpc_xprt_switch is referrenced by rpc_clnt_setup_test_and_add_xprt
8150 * and is dereferrenced in nfs4_exchange_id_release
8152 * Upon success, add the new transport to the rpc_clnt
8154 * @clnt: struct rpc_clnt to get new transport
8155 * @xprt: the rpc_xprt to test
8156 * @data: call data for _nfs4_proc_exchange_id.
8158 void nfs4_test_session_trunk(struct rpc_clnt
*clnt
, struct rpc_xprt
*xprt
,
8161 struct nfs4_add_xprt_data
*adata
= (struct nfs4_add_xprt_data
*)data
;
8162 struct rpc_task
*task
;
8167 dprintk("--> %s try %s\n", __func__
,
8168 xprt
->address_strings
[RPC_DISPLAY_ADDR
]);
8170 sp4_how
= (adata
->clp
->cl_sp4_flags
== 0 ? SP4_NONE
: SP4_MACH_CRED
);
8172 /* Test connection for session trunking. Async exchange_id call */
8173 task
= nfs4_run_exchange_id(adata
->clp
, adata
->cred
, sp4_how
, xprt
);
8177 status
= task
->tk_status
;
8179 status
= nfs4_detect_session_trunking(adata
->clp
,
8180 task
->tk_msg
.rpc_resp
, xprt
);
8183 rpc_clnt_xprt_switch_add_xprt(clnt
, xprt
);
8187 EXPORT_SYMBOL_GPL(nfs4_test_session_trunk
);
8189 static int _nfs4_proc_destroy_clientid(struct nfs_client
*clp
,
8190 const struct cred
*cred
)
8192 struct rpc_message msg
= {
8193 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_DESTROY_CLIENTID
],
8199 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
8200 trace_nfs4_destroy_clientid(clp
, status
);
8202 dprintk("NFS: Got error %d from the server %s on "
8203 "DESTROY_CLIENTID.", status
, clp
->cl_hostname
);
8207 static int nfs4_proc_destroy_clientid(struct nfs_client
*clp
,
8208 const struct cred
*cred
)
8213 for (loop
= NFS4_MAX_LOOP_ON_RECOVER
; loop
!= 0; loop
--) {
8214 ret
= _nfs4_proc_destroy_clientid(clp
, cred
);
8216 case -NFS4ERR_DELAY
:
8217 case -NFS4ERR_CLIENTID_BUSY
:
8227 int nfs4_destroy_clientid(struct nfs_client
*clp
)
8229 const struct cred
*cred
;
8232 if (clp
->cl_mvops
->minor_version
< 1)
8234 if (clp
->cl_exchange_flags
== 0)
8236 if (clp
->cl_preserve_clid
)
8238 cred
= nfs4_get_clid_cred(clp
);
8239 ret
= nfs4_proc_destroy_clientid(clp
, cred
);
8243 case -NFS4ERR_STALE_CLIENTID
:
8244 clp
->cl_exchange_flags
= 0;
8250 struct nfs4_get_lease_time_data
{
8251 struct nfs4_get_lease_time_args
*args
;
8252 struct nfs4_get_lease_time_res
*res
;
8253 struct nfs_client
*clp
;
8256 static void nfs4_get_lease_time_prepare(struct rpc_task
*task
,
8259 struct nfs4_get_lease_time_data
*data
=
8260 (struct nfs4_get_lease_time_data
*)calldata
;
8262 dprintk("--> %s\n", __func__
);
8263 /* just setup sequence, do not trigger session recovery
8264 since we're invoked within one */
8265 nfs4_setup_sequence(data
->clp
,
8266 &data
->args
->la_seq_args
,
8267 &data
->res
->lr_seq_res
,
8269 dprintk("<-- %s\n", __func__
);
8273 * Called from nfs4_state_manager thread for session setup, so don't recover
8274 * from sequence operation or clientid errors.
8276 static void nfs4_get_lease_time_done(struct rpc_task
*task
, void *calldata
)
8278 struct nfs4_get_lease_time_data
*data
=
8279 (struct nfs4_get_lease_time_data
*)calldata
;
8281 dprintk("--> %s\n", __func__
);
8282 if (!nfs41_sequence_done(task
, &data
->res
->lr_seq_res
))
8284 switch (task
->tk_status
) {
8285 case -NFS4ERR_DELAY
:
8286 case -NFS4ERR_GRACE
:
8287 dprintk("%s Retry: tk_status %d\n", __func__
, task
->tk_status
);
8288 rpc_delay(task
, NFS4_POLL_RETRY_MIN
);
8289 task
->tk_status
= 0;
8291 case -NFS4ERR_RETRY_UNCACHED_REP
:
8292 rpc_restart_call_prepare(task
);
8295 dprintk("<-- %s\n", __func__
);
8298 static const struct rpc_call_ops nfs4_get_lease_time_ops
= {
8299 .rpc_call_prepare
= nfs4_get_lease_time_prepare
,
8300 .rpc_call_done
= nfs4_get_lease_time_done
,
8303 int nfs4_proc_get_lease_time(struct nfs_client
*clp
, struct nfs_fsinfo
*fsinfo
)
8305 struct rpc_task
*task
;
8306 struct nfs4_get_lease_time_args args
;
8307 struct nfs4_get_lease_time_res res
= {
8308 .lr_fsinfo
= fsinfo
,
8310 struct nfs4_get_lease_time_data data
= {
8315 struct rpc_message msg
= {
8316 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GET_LEASE_TIME
],
8320 struct rpc_task_setup task_setup
= {
8321 .rpc_client
= clp
->cl_rpcclient
,
8322 .rpc_message
= &msg
,
8323 .callback_ops
= &nfs4_get_lease_time_ops
,
8324 .callback_data
= &data
,
8325 .flags
= RPC_TASK_TIMEOUT
,
8329 nfs4_init_sequence(&args
.la_seq_args
, &res
.lr_seq_res
, 0, 1);
8330 task
= rpc_run_task(&task_setup
);
8333 return PTR_ERR(task
);
8335 status
= task
->tk_status
;
8341 * Initialize the values to be used by the client in CREATE_SESSION
8342 * If nfs4_init_session set the fore channel request and response sizes,
8345 * Set the back channel max_resp_sz_cached to zero to force the client to
8346 * always set csa_cachethis to FALSE because the current implementation
8347 * of the back channel DRC only supports caching the CB_SEQUENCE operation.
8349 static void nfs4_init_channel_attrs(struct nfs41_create_session_args
*args
,
8350 struct rpc_clnt
*clnt
)
8352 unsigned int max_rqst_sz
, max_resp_sz
;
8353 unsigned int max_bc_payload
= rpc_max_bc_payload(clnt
);
8355 max_rqst_sz
= NFS_MAX_FILE_IO_SIZE
+ nfs41_maxwrite_overhead
;
8356 max_resp_sz
= NFS_MAX_FILE_IO_SIZE
+ nfs41_maxread_overhead
;
8358 /* Fore channel attributes */
8359 args
->fc_attrs
.max_rqst_sz
= max_rqst_sz
;
8360 args
->fc_attrs
.max_resp_sz
= max_resp_sz
;
8361 args
->fc_attrs
.max_ops
= NFS4_MAX_OPS
;
8362 args
->fc_attrs
.max_reqs
= max_session_slots
;
8364 dprintk("%s: Fore Channel : max_rqst_sz=%u max_resp_sz=%u "
8365 "max_ops=%u max_reqs=%u\n",
8367 args
->fc_attrs
.max_rqst_sz
, args
->fc_attrs
.max_resp_sz
,
8368 args
->fc_attrs
.max_ops
, args
->fc_attrs
.max_reqs
);
8370 /* Back channel attributes */
8371 args
->bc_attrs
.max_rqst_sz
= max_bc_payload
;
8372 args
->bc_attrs
.max_resp_sz
= max_bc_payload
;
8373 args
->bc_attrs
.max_resp_sz_cached
= 0;
8374 args
->bc_attrs
.max_ops
= NFS4_MAX_BACK_CHANNEL_OPS
;
8375 args
->bc_attrs
.max_reqs
= max_t(unsigned short, max_session_cb_slots
, 1);
8377 dprintk("%s: Back Channel : max_rqst_sz=%u max_resp_sz=%u "
8378 "max_resp_sz_cached=%u max_ops=%u max_reqs=%u\n",
8380 args
->bc_attrs
.max_rqst_sz
, args
->bc_attrs
.max_resp_sz
,
8381 args
->bc_attrs
.max_resp_sz_cached
, args
->bc_attrs
.max_ops
,
8382 args
->bc_attrs
.max_reqs
);
8385 static int nfs4_verify_fore_channel_attrs(struct nfs41_create_session_args
*args
,
8386 struct nfs41_create_session_res
*res
)
8388 struct nfs4_channel_attrs
*sent
= &args
->fc_attrs
;
8389 struct nfs4_channel_attrs
*rcvd
= &res
->fc_attrs
;
8391 if (rcvd
->max_resp_sz
> sent
->max_resp_sz
)
8394 * Our requested max_ops is the minimum we need; we're not
8395 * prepared to break up compounds into smaller pieces than that.
8396 * So, no point even trying to continue if the server won't
8399 if (rcvd
->max_ops
< sent
->max_ops
)
8401 if (rcvd
->max_reqs
== 0)
8403 if (rcvd
->max_reqs
> NFS4_MAX_SLOT_TABLE
)
8404 rcvd
->max_reqs
= NFS4_MAX_SLOT_TABLE
;
8408 static int nfs4_verify_back_channel_attrs(struct nfs41_create_session_args
*args
,
8409 struct nfs41_create_session_res
*res
)
8411 struct nfs4_channel_attrs
*sent
= &args
->bc_attrs
;
8412 struct nfs4_channel_attrs
*rcvd
= &res
->bc_attrs
;
8414 if (!(res
->flags
& SESSION4_BACK_CHAN
))
8416 if (rcvd
->max_rqst_sz
> sent
->max_rqst_sz
)
8418 if (rcvd
->max_resp_sz
< sent
->max_resp_sz
)
8420 if (rcvd
->max_resp_sz_cached
> sent
->max_resp_sz_cached
)
8422 if (rcvd
->max_ops
> sent
->max_ops
)
8424 if (rcvd
->max_reqs
> sent
->max_reqs
)
8430 static int nfs4_verify_channel_attrs(struct nfs41_create_session_args
*args
,
8431 struct nfs41_create_session_res
*res
)
8435 ret
= nfs4_verify_fore_channel_attrs(args
, res
);
8438 return nfs4_verify_back_channel_attrs(args
, res
);
8441 static void nfs4_update_session(struct nfs4_session
*session
,
8442 struct nfs41_create_session_res
*res
)
8444 nfs4_copy_sessionid(&session
->sess_id
, &res
->sessionid
);
8445 /* Mark client id and session as being confirmed */
8446 session
->clp
->cl_exchange_flags
|= EXCHGID4_FLAG_CONFIRMED_R
;
8447 set_bit(NFS4_SESSION_ESTABLISHED
, &session
->session_state
);
8448 session
->flags
= res
->flags
;
8449 memcpy(&session
->fc_attrs
, &res
->fc_attrs
, sizeof(session
->fc_attrs
));
8450 if (res
->flags
& SESSION4_BACK_CHAN
)
8451 memcpy(&session
->bc_attrs
, &res
->bc_attrs
,
8452 sizeof(session
->bc_attrs
));
8455 static int _nfs4_proc_create_session(struct nfs_client
*clp
,
8456 const struct cred
*cred
)
8458 struct nfs4_session
*session
= clp
->cl_session
;
8459 struct nfs41_create_session_args args
= {
8461 .clientid
= clp
->cl_clientid
,
8462 .seqid
= clp
->cl_seqid
,
8463 .cb_program
= NFS4_CALLBACK
,
8465 struct nfs41_create_session_res res
;
8467 struct rpc_message msg
= {
8468 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_CREATE_SESSION
],
8475 nfs4_init_channel_attrs(&args
, clp
->cl_rpcclient
);
8476 args
.flags
= (SESSION4_PERSIST
| SESSION4_BACK_CHAN
);
8478 status
= rpc_call_sync(session
->clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
8479 trace_nfs4_create_session(clp
, status
);
8482 case -NFS4ERR_STALE_CLIENTID
:
8483 case -NFS4ERR_DELAY
:
8492 /* Verify the session's negotiated channel_attrs values */
8493 status
= nfs4_verify_channel_attrs(&args
, &res
);
8494 /* Increment the clientid slot sequence id */
8497 nfs4_update_session(session
, &res
);
8504 * Issues a CREATE_SESSION operation to the server.
8505 * It is the responsibility of the caller to verify the session is
8506 * expired before calling this routine.
8508 int nfs4_proc_create_session(struct nfs_client
*clp
, const struct cred
*cred
)
8512 struct nfs4_session
*session
= clp
->cl_session
;
8514 dprintk("--> %s clp=%p session=%p\n", __func__
, clp
, session
);
8516 status
= _nfs4_proc_create_session(clp
, cred
);
8520 /* Init or reset the session slot tables */
8521 status
= nfs4_setup_session_slot_tables(session
);
8522 dprintk("slot table setup returned %d\n", status
);
8526 ptr
= (unsigned *)&session
->sess_id
.data
[0];
8527 dprintk("%s client>seqid %d sessionid %u:%u:%u:%u\n", __func__
,
8528 clp
->cl_seqid
, ptr
[0], ptr
[1], ptr
[2], ptr
[3]);
8530 dprintk("<-- %s\n", __func__
);
8535 * Issue the over-the-wire RPC DESTROY_SESSION.
8536 * The caller must serialize access to this routine.
8538 int nfs4_proc_destroy_session(struct nfs4_session
*session
,
8539 const struct cred
*cred
)
8541 struct rpc_message msg
= {
8542 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_DESTROY_SESSION
],
8543 .rpc_argp
= session
,
8548 dprintk("--> nfs4_proc_destroy_session\n");
8550 /* session is still being setup */
8551 if (!test_and_clear_bit(NFS4_SESSION_ESTABLISHED
, &session
->session_state
))
8554 status
= rpc_call_sync(session
->clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
8555 trace_nfs4_destroy_session(session
->clp
, status
);
8558 dprintk("NFS: Got error %d from the server on DESTROY_SESSION. "
8559 "Session has been destroyed regardless...\n", status
);
8561 dprintk("<-- nfs4_proc_destroy_session\n");
8566 * Renew the cl_session lease.
8568 struct nfs4_sequence_data
{
8569 struct nfs_client
*clp
;
8570 struct nfs4_sequence_args args
;
8571 struct nfs4_sequence_res res
;
8574 static void nfs41_sequence_release(void *data
)
8576 struct nfs4_sequence_data
*calldata
= data
;
8577 struct nfs_client
*clp
= calldata
->clp
;
8579 if (refcount_read(&clp
->cl_count
) > 1)
8580 nfs4_schedule_state_renewal(clp
);
8581 nfs_put_client(clp
);
8585 static int nfs41_sequence_handle_errors(struct rpc_task
*task
, struct nfs_client
*clp
)
8587 switch(task
->tk_status
) {
8588 case -NFS4ERR_DELAY
:
8589 rpc_delay(task
, NFS4_POLL_RETRY_MAX
);
8592 nfs4_schedule_lease_recovery(clp
);
8597 static void nfs41_sequence_call_done(struct rpc_task
*task
, void *data
)
8599 struct nfs4_sequence_data
*calldata
= data
;
8600 struct nfs_client
*clp
= calldata
->clp
;
8602 if (!nfs41_sequence_done(task
, task
->tk_msg
.rpc_resp
))
8605 trace_nfs4_sequence(clp
, task
->tk_status
);
8606 if (task
->tk_status
< 0) {
8607 dprintk("%s ERROR %d\n", __func__
, task
->tk_status
);
8608 if (refcount_read(&clp
->cl_count
) == 1)
8611 if (nfs41_sequence_handle_errors(task
, clp
) == -EAGAIN
) {
8612 rpc_restart_call_prepare(task
);
8616 dprintk("%s rpc_cred %p\n", __func__
, task
->tk_msg
.rpc_cred
);
8618 dprintk("<-- %s\n", __func__
);
8621 static void nfs41_sequence_prepare(struct rpc_task
*task
, void *data
)
8623 struct nfs4_sequence_data
*calldata
= data
;
8624 struct nfs_client
*clp
= calldata
->clp
;
8625 struct nfs4_sequence_args
*args
;
8626 struct nfs4_sequence_res
*res
;
8628 args
= task
->tk_msg
.rpc_argp
;
8629 res
= task
->tk_msg
.rpc_resp
;
8631 nfs4_setup_sequence(clp
, args
, res
, task
);
8634 static const struct rpc_call_ops nfs41_sequence_ops
= {
8635 .rpc_call_done
= nfs41_sequence_call_done
,
8636 .rpc_call_prepare
= nfs41_sequence_prepare
,
8637 .rpc_release
= nfs41_sequence_release
,
8640 static struct rpc_task
*_nfs41_proc_sequence(struct nfs_client
*clp
,
8641 const struct cred
*cred
,
8642 struct nfs4_slot
*slot
,
8645 struct nfs4_sequence_data
*calldata
;
8646 struct rpc_message msg
= {
8647 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SEQUENCE
],
8650 struct rpc_task_setup task_setup_data
= {
8651 .rpc_client
= clp
->cl_rpcclient
,
8652 .rpc_message
= &msg
,
8653 .callback_ops
= &nfs41_sequence_ops
,
8654 .flags
= RPC_TASK_ASYNC
| RPC_TASK_TIMEOUT
,
8656 struct rpc_task
*ret
;
8658 ret
= ERR_PTR(-EIO
);
8659 if (!refcount_inc_not_zero(&clp
->cl_count
))
8662 ret
= ERR_PTR(-ENOMEM
);
8663 calldata
= kzalloc(sizeof(*calldata
), GFP_NOFS
);
8664 if (calldata
== NULL
)
8666 nfs4_init_sequence(&calldata
->args
, &calldata
->res
, 0, is_privileged
);
8667 nfs4_sequence_attach_slot(&calldata
->args
, &calldata
->res
, slot
);
8668 msg
.rpc_argp
= &calldata
->args
;
8669 msg
.rpc_resp
= &calldata
->res
;
8670 calldata
->clp
= clp
;
8671 task_setup_data
.callback_data
= calldata
;
8673 ret
= rpc_run_task(&task_setup_data
);
8678 nfs_put_client(clp
);
8680 nfs41_release_slot(slot
);
8684 static int nfs41_proc_async_sequence(struct nfs_client
*clp
, const struct cred
*cred
, unsigned renew_flags
)
8686 struct rpc_task
*task
;
8689 if ((renew_flags
& NFS4_RENEW_TIMEOUT
) == 0)
8691 task
= _nfs41_proc_sequence(clp
, cred
, NULL
, false);
8693 ret
= PTR_ERR(task
);
8695 rpc_put_task_async(task
);
8696 dprintk("<-- %s status=%d\n", __func__
, ret
);
8700 static int nfs4_proc_sequence(struct nfs_client
*clp
, const struct cred
*cred
)
8702 struct rpc_task
*task
;
8705 task
= _nfs41_proc_sequence(clp
, cred
, NULL
, true);
8707 ret
= PTR_ERR(task
);
8710 ret
= rpc_wait_for_completion_task(task
);
8712 ret
= task
->tk_status
;
8715 dprintk("<-- %s status=%d\n", __func__
, ret
);
8719 struct nfs4_reclaim_complete_data
{
8720 struct nfs_client
*clp
;
8721 struct nfs41_reclaim_complete_args arg
;
8722 struct nfs41_reclaim_complete_res res
;
8725 static void nfs4_reclaim_complete_prepare(struct rpc_task
*task
, void *data
)
8727 struct nfs4_reclaim_complete_data
*calldata
= data
;
8729 nfs4_setup_sequence(calldata
->clp
,
8730 &calldata
->arg
.seq_args
,
8731 &calldata
->res
.seq_res
,
8735 static int nfs41_reclaim_complete_handle_errors(struct rpc_task
*task
, struct nfs_client
*clp
)
8737 switch(task
->tk_status
) {
8739 wake_up_all(&clp
->cl_lock_waitq
);
8741 case -NFS4ERR_COMPLETE_ALREADY
:
8742 case -NFS4ERR_WRONG_CRED
: /* What to do here? */
8744 case -NFS4ERR_DELAY
:
8745 rpc_delay(task
, NFS4_POLL_RETRY_MAX
);
8747 case -NFS4ERR_RETRY_UNCACHED_REP
:
8749 case -NFS4ERR_BADSESSION
:
8750 case -NFS4ERR_DEADSESSION
:
8751 case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION
:
8752 nfs4_schedule_session_recovery(clp
->cl_session
,
8756 nfs4_schedule_lease_recovery(clp
);
8761 static void nfs4_reclaim_complete_done(struct rpc_task
*task
, void *data
)
8763 struct nfs4_reclaim_complete_data
*calldata
= data
;
8764 struct nfs_client
*clp
= calldata
->clp
;
8765 struct nfs4_sequence_res
*res
= &calldata
->res
.seq_res
;
8767 dprintk("--> %s\n", __func__
);
8768 if (!nfs41_sequence_done(task
, res
))
8771 trace_nfs4_reclaim_complete(clp
, task
->tk_status
);
8772 if (nfs41_reclaim_complete_handle_errors(task
, clp
) == -EAGAIN
) {
8773 rpc_restart_call_prepare(task
);
8776 dprintk("<-- %s\n", __func__
);
8779 static void nfs4_free_reclaim_complete_data(void *data
)
8781 struct nfs4_reclaim_complete_data
*calldata
= data
;
8786 static const struct rpc_call_ops nfs4_reclaim_complete_call_ops
= {
8787 .rpc_call_prepare
= nfs4_reclaim_complete_prepare
,
8788 .rpc_call_done
= nfs4_reclaim_complete_done
,
8789 .rpc_release
= nfs4_free_reclaim_complete_data
,
8793 * Issue a global reclaim complete.
8795 static int nfs41_proc_reclaim_complete(struct nfs_client
*clp
,
8796 const struct cred
*cred
)
8798 struct nfs4_reclaim_complete_data
*calldata
;
8799 struct rpc_task
*task
;
8800 struct rpc_message msg
= {
8801 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RECLAIM_COMPLETE
],
8804 struct rpc_task_setup task_setup_data
= {
8805 .rpc_client
= clp
->cl_rpcclient
,
8806 .rpc_message
= &msg
,
8807 .callback_ops
= &nfs4_reclaim_complete_call_ops
,
8808 .flags
= RPC_TASK_ASYNC
,
8810 int status
= -ENOMEM
;
8812 dprintk("--> %s\n", __func__
);
8813 calldata
= kzalloc(sizeof(*calldata
), GFP_NOFS
);
8814 if (calldata
== NULL
)
8816 calldata
->clp
= clp
;
8817 calldata
->arg
.one_fs
= 0;
8819 nfs4_init_sequence(&calldata
->arg
.seq_args
, &calldata
->res
.seq_res
, 0, 1);
8820 msg
.rpc_argp
= &calldata
->arg
;
8821 msg
.rpc_resp
= &calldata
->res
;
8822 task_setup_data
.callback_data
= calldata
;
8823 task
= rpc_run_task(&task_setup_data
);
8825 status
= PTR_ERR(task
);
8828 status
= rpc_wait_for_completion_task(task
);
8830 status
= task
->tk_status
;
8833 dprintk("<-- %s status=%d\n", __func__
, status
);
8838 nfs4_layoutget_prepare(struct rpc_task
*task
, void *calldata
)
8840 struct nfs4_layoutget
*lgp
= calldata
;
8841 struct nfs_server
*server
= NFS_SERVER(lgp
->args
.inode
);
8843 dprintk("--> %s\n", __func__
);
8844 nfs4_setup_sequence(server
->nfs_client
, &lgp
->args
.seq_args
,
8845 &lgp
->res
.seq_res
, task
);
8846 dprintk("<-- %s\n", __func__
);
8849 static void nfs4_layoutget_done(struct rpc_task
*task
, void *calldata
)
8851 struct nfs4_layoutget
*lgp
= calldata
;
8853 dprintk("--> %s\n", __func__
);
8854 nfs41_sequence_process(task
, &lgp
->res
.seq_res
);
8855 dprintk("<-- %s\n", __func__
);
8859 nfs4_layoutget_handle_exception(struct rpc_task
*task
,
8860 struct nfs4_layoutget
*lgp
, struct nfs4_exception
*exception
)
8862 struct inode
*inode
= lgp
->args
.inode
;
8863 struct nfs_server
*server
= NFS_SERVER(inode
);
8864 struct pnfs_layout_hdr
*lo
;
8865 int nfs4err
= task
->tk_status
;
8866 int err
, status
= 0;
8869 dprintk("--> %s tk_status => %d\n", __func__
, -task
->tk_status
);
8871 nfs4_sequence_free_slot(&lgp
->res
.seq_res
);
8878 * NFS4ERR_LAYOUTUNAVAILABLE means we are not supposed to use pnfs
8879 * on the file. set tk_status to -ENODATA to tell upper layer to
8882 case -NFS4ERR_LAYOUTUNAVAILABLE
:
8886 * NFS4ERR_BADLAYOUT means the MDS cannot return a layout of
8887 * length lgp->args.minlength != 0 (see RFC5661 section 18.43.3).
8889 case -NFS4ERR_BADLAYOUT
:
8890 status
= -EOVERFLOW
;
8893 * NFS4ERR_LAYOUTTRYLATER is a conflict with another client
8894 * (or clients) writing to the same RAID stripe except when
8895 * the minlength argument is 0 (see RFC5661 section 18.43.3).
8897 * Treat it like we would RECALLCONFLICT -- we retry for a little
8898 * while, and then eventually give up.
8900 case -NFS4ERR_LAYOUTTRYLATER
:
8901 if (lgp
->args
.minlength
== 0) {
8902 status
= -EOVERFLOW
;
8907 case -NFS4ERR_RECALLCONFLICT
:
8908 status
= -ERECALLCONFLICT
;
8910 case -NFS4ERR_DELEG_REVOKED
:
8911 case -NFS4ERR_ADMIN_REVOKED
:
8912 case -NFS4ERR_EXPIRED
:
8913 case -NFS4ERR_BAD_STATEID
:
8914 exception
->timeout
= 0;
8915 spin_lock(&inode
->i_lock
);
8916 lo
= NFS_I(inode
)->layout
;
8917 /* If the open stateid was bad, then recover it. */
8918 if (!lo
|| test_bit(NFS_LAYOUT_INVALID_STID
, &lo
->plh_flags
) ||
8919 !nfs4_stateid_match_other(&lgp
->args
.stateid
, &lo
->plh_stateid
)) {
8920 spin_unlock(&inode
->i_lock
);
8921 exception
->state
= lgp
->args
.ctx
->state
;
8922 exception
->stateid
= &lgp
->args
.stateid
;
8927 * Mark the bad layout state as invalid, then retry
8929 pnfs_mark_layout_stateid_invalid(lo
, &head
);
8930 spin_unlock(&inode
->i_lock
);
8931 nfs_commit_inode(inode
, 0);
8932 pnfs_free_lseg_list(&head
);
8937 err
= nfs4_handle_exception(server
, nfs4err
, exception
);
8939 if (exception
->retry
)
8945 dprintk("<-- %s\n", __func__
);
8949 size_t max_response_pages(struct nfs_server
*server
)
8951 u32 max_resp_sz
= server
->nfs_client
->cl_session
->fc_attrs
.max_resp_sz
;
8952 return nfs_page_array_len(0, max_resp_sz
);
8955 static void nfs4_layoutget_release(void *calldata
)
8957 struct nfs4_layoutget
*lgp
= calldata
;
8959 dprintk("--> %s\n", __func__
);
8960 nfs4_sequence_free_slot(&lgp
->res
.seq_res
);
8961 pnfs_layoutget_free(lgp
);
8962 dprintk("<-- %s\n", __func__
);
8965 static const struct rpc_call_ops nfs4_layoutget_call_ops
= {
8966 .rpc_call_prepare
= nfs4_layoutget_prepare
,
8967 .rpc_call_done
= nfs4_layoutget_done
,
8968 .rpc_release
= nfs4_layoutget_release
,
8971 struct pnfs_layout_segment
*
8972 nfs4_proc_layoutget(struct nfs4_layoutget
*lgp
, long *timeout
)
8974 struct inode
*inode
= lgp
->args
.inode
;
8975 struct nfs_server
*server
= NFS_SERVER(inode
);
8976 struct rpc_task
*task
;
8977 struct rpc_message msg
= {
8978 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LAYOUTGET
],
8979 .rpc_argp
= &lgp
->args
,
8980 .rpc_resp
= &lgp
->res
,
8981 .rpc_cred
= lgp
->cred
,
8983 struct rpc_task_setup task_setup_data
= {
8984 .rpc_client
= server
->client
,
8985 .rpc_message
= &msg
,
8986 .callback_ops
= &nfs4_layoutget_call_ops
,
8987 .callback_data
= lgp
,
8988 .flags
= RPC_TASK_ASYNC
,
8990 struct pnfs_layout_segment
*lseg
= NULL
;
8991 struct nfs4_exception exception
= {
8993 .timeout
= *timeout
,
8997 dprintk("--> %s\n", __func__
);
8999 /* nfs4_layoutget_release calls pnfs_put_layout_hdr */
9000 pnfs_get_layout_hdr(NFS_I(inode
)->layout
);
9002 nfs4_init_sequence(&lgp
->args
.seq_args
, &lgp
->res
.seq_res
, 0, 0);
9004 task
= rpc_run_task(&task_setup_data
);
9006 return ERR_CAST(task
);
9007 status
= rpc_wait_for_completion_task(task
);
9011 if (task
->tk_status
< 0) {
9012 status
= nfs4_layoutget_handle_exception(task
, lgp
, &exception
);
9013 *timeout
= exception
.timeout
;
9014 } else if (lgp
->res
.layoutp
->len
== 0) {
9016 *timeout
= nfs4_update_delay(&exception
.timeout
);
9018 lseg
= pnfs_layout_process(lgp
);
9020 trace_nfs4_layoutget(lgp
->args
.ctx
,
9027 dprintk("<-- %s status=%d\n", __func__
, status
);
9029 return ERR_PTR(status
);
9034 nfs4_layoutreturn_prepare(struct rpc_task
*task
, void *calldata
)
9036 struct nfs4_layoutreturn
*lrp
= calldata
;
9038 dprintk("--> %s\n", __func__
);
9039 nfs4_setup_sequence(lrp
->clp
,
9040 &lrp
->args
.seq_args
,
9043 if (!pnfs_layout_is_valid(lrp
->args
.layout
))
9047 static void nfs4_layoutreturn_done(struct rpc_task
*task
, void *calldata
)
9049 struct nfs4_layoutreturn
*lrp
= calldata
;
9050 struct nfs_server
*server
;
9052 dprintk("--> %s\n", __func__
);
9054 if (!nfs41_sequence_process(task
, &lrp
->res
.seq_res
))
9057 server
= NFS_SERVER(lrp
->args
.inode
);
9058 switch (task
->tk_status
) {
9059 case -NFS4ERR_OLD_STATEID
:
9060 if (nfs4_layoutreturn_refresh_stateid(&lrp
->args
.stateid
,
9066 task
->tk_status
= 0;
9070 case -NFS4ERR_DELAY
:
9071 if (nfs4_async_handle_error(task
, server
, NULL
, NULL
) != -EAGAIN
)
9075 dprintk("<-- %s\n", __func__
);
9078 task
->tk_status
= 0;
9079 nfs4_sequence_free_slot(&lrp
->res
.seq_res
);
9080 rpc_restart_call_prepare(task
);
9083 static void nfs4_layoutreturn_release(void *calldata
)
9085 struct nfs4_layoutreturn
*lrp
= calldata
;
9086 struct pnfs_layout_hdr
*lo
= lrp
->args
.layout
;
9088 dprintk("--> %s\n", __func__
);
9089 pnfs_layoutreturn_free_lsegs(lo
, &lrp
->args
.stateid
, &lrp
->args
.range
,
9090 lrp
->res
.lrs_present
? &lrp
->res
.stateid
: NULL
);
9091 nfs4_sequence_free_slot(&lrp
->res
.seq_res
);
9092 if (lrp
->ld_private
.ops
&& lrp
->ld_private
.ops
->free
)
9093 lrp
->ld_private
.ops
->free(&lrp
->ld_private
);
9094 pnfs_put_layout_hdr(lrp
->args
.layout
);
9095 nfs_iput_and_deactive(lrp
->inode
);
9097 dprintk("<-- %s\n", __func__
);
9100 static const struct rpc_call_ops nfs4_layoutreturn_call_ops
= {
9101 .rpc_call_prepare
= nfs4_layoutreturn_prepare
,
9102 .rpc_call_done
= nfs4_layoutreturn_done
,
9103 .rpc_release
= nfs4_layoutreturn_release
,
9106 int nfs4_proc_layoutreturn(struct nfs4_layoutreturn
*lrp
, bool sync
)
9108 struct rpc_task
*task
;
9109 struct rpc_message msg
= {
9110 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LAYOUTRETURN
],
9111 .rpc_argp
= &lrp
->args
,
9112 .rpc_resp
= &lrp
->res
,
9113 .rpc_cred
= lrp
->cred
,
9115 struct rpc_task_setup task_setup_data
= {
9116 .rpc_client
= NFS_SERVER(lrp
->args
.inode
)->client
,
9117 .rpc_message
= &msg
,
9118 .callback_ops
= &nfs4_layoutreturn_call_ops
,
9119 .callback_data
= lrp
,
9123 nfs4_state_protect(NFS_SERVER(lrp
->args
.inode
)->nfs_client
,
9124 NFS_SP4_MACH_CRED_PNFS_CLEANUP
,
9125 &task_setup_data
.rpc_client
, &msg
);
9127 dprintk("--> %s\n", __func__
);
9129 lrp
->inode
= nfs_igrab_and_active(lrp
->args
.inode
);
9131 nfs4_layoutreturn_release(lrp
);
9134 task_setup_data
.flags
|= RPC_TASK_ASYNC
;
9136 nfs4_init_sequence(&lrp
->args
.seq_args
, &lrp
->res
.seq_res
, 1, 0);
9137 task
= rpc_run_task(&task_setup_data
);
9139 return PTR_ERR(task
);
9141 status
= task
->tk_status
;
9142 trace_nfs4_layoutreturn(lrp
->args
.inode
, &lrp
->args
.stateid
, status
);
9143 dprintk("<-- %s status=%d\n", __func__
, status
);
9149 _nfs4_proc_getdeviceinfo(struct nfs_server
*server
,
9150 struct pnfs_device
*pdev
,
9151 const struct cred
*cred
)
9153 struct nfs4_getdeviceinfo_args args
= {
9155 .notify_types
= NOTIFY_DEVICEID4_CHANGE
|
9156 NOTIFY_DEVICEID4_DELETE
,
9158 struct nfs4_getdeviceinfo_res res
= {
9161 struct rpc_message msg
= {
9162 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GETDEVICEINFO
],
9169 dprintk("--> %s\n", __func__
);
9170 status
= nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
9171 if (res
.notification
& ~args
.notify_types
)
9172 dprintk("%s: unsupported notification\n", __func__
);
9173 if (res
.notification
!= args
.notify_types
)
9176 dprintk("<-- %s status=%d\n", __func__
, status
);
9181 int nfs4_proc_getdeviceinfo(struct nfs_server
*server
,
9182 struct pnfs_device
*pdev
,
9183 const struct cred
*cred
)
9185 struct nfs4_exception exception
= { };
9189 err
= nfs4_handle_exception(server
,
9190 _nfs4_proc_getdeviceinfo(server
, pdev
, cred
),
9192 } while (exception
.retry
);
9195 EXPORT_SYMBOL_GPL(nfs4_proc_getdeviceinfo
);
9197 static void nfs4_layoutcommit_prepare(struct rpc_task
*task
, void *calldata
)
9199 struct nfs4_layoutcommit_data
*data
= calldata
;
9200 struct nfs_server
*server
= NFS_SERVER(data
->args
.inode
);
9202 nfs4_setup_sequence(server
->nfs_client
,
9203 &data
->args
.seq_args
,
9209 nfs4_layoutcommit_done(struct rpc_task
*task
, void *calldata
)
9211 struct nfs4_layoutcommit_data
*data
= calldata
;
9212 struct nfs_server
*server
= NFS_SERVER(data
->args
.inode
);
9214 if (!nfs41_sequence_done(task
, &data
->res
.seq_res
))
9217 switch (task
->tk_status
) { /* Just ignore these failures */
9218 case -NFS4ERR_DELEG_REVOKED
: /* layout was recalled */
9219 case -NFS4ERR_BADIOMODE
: /* no IOMODE_RW layout for range */
9220 case -NFS4ERR_BADLAYOUT
: /* no layout */
9221 case -NFS4ERR_GRACE
: /* loca_recalim always false */
9222 task
->tk_status
= 0;
9226 if (nfs4_async_handle_error(task
, server
, NULL
, NULL
) == -EAGAIN
) {
9227 rpc_restart_call_prepare(task
);
9233 static void nfs4_layoutcommit_release(void *calldata
)
9235 struct nfs4_layoutcommit_data
*data
= calldata
;
9237 pnfs_cleanup_layoutcommit(data
);
9238 nfs_post_op_update_inode_force_wcc(data
->args
.inode
,
9240 put_cred(data
->cred
);
9241 nfs_iput_and_deactive(data
->inode
);
9245 static const struct rpc_call_ops nfs4_layoutcommit_ops
= {
9246 .rpc_call_prepare
= nfs4_layoutcommit_prepare
,
9247 .rpc_call_done
= nfs4_layoutcommit_done
,
9248 .rpc_release
= nfs4_layoutcommit_release
,
9252 nfs4_proc_layoutcommit(struct nfs4_layoutcommit_data
*data
, bool sync
)
9254 struct rpc_message msg
= {
9255 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LAYOUTCOMMIT
],
9256 .rpc_argp
= &data
->args
,
9257 .rpc_resp
= &data
->res
,
9258 .rpc_cred
= data
->cred
,
9260 struct rpc_task_setup task_setup_data
= {
9261 .task
= &data
->task
,
9262 .rpc_client
= NFS_CLIENT(data
->args
.inode
),
9263 .rpc_message
= &msg
,
9264 .callback_ops
= &nfs4_layoutcommit_ops
,
9265 .callback_data
= data
,
9267 struct rpc_task
*task
;
9270 dprintk("NFS: initiating layoutcommit call. sync %d "
9271 "lbw: %llu inode %lu\n", sync
,
9272 data
->args
.lastbytewritten
,
9273 data
->args
.inode
->i_ino
);
9276 data
->inode
= nfs_igrab_and_active(data
->args
.inode
);
9277 if (data
->inode
== NULL
) {
9278 nfs4_layoutcommit_release(data
);
9281 task_setup_data
.flags
= RPC_TASK_ASYNC
;
9283 nfs4_init_sequence(&data
->args
.seq_args
, &data
->res
.seq_res
, 1, 0);
9284 task
= rpc_run_task(&task_setup_data
);
9286 return PTR_ERR(task
);
9288 status
= task
->tk_status
;
9289 trace_nfs4_layoutcommit(data
->args
.inode
, &data
->args
.stateid
, status
);
9290 dprintk("%s: status %d\n", __func__
, status
);
9296 * Use the state managment nfs_client cl_rpcclient, which uses krb5i (if
9297 * possible) as per RFC3530bis and RFC5661 Security Considerations sections
9300 _nfs41_proc_secinfo_no_name(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
9301 struct nfs_fsinfo
*info
,
9302 struct nfs4_secinfo_flavors
*flavors
, bool use_integrity
)
9304 struct nfs41_secinfo_no_name_args args
= {
9305 .style
= SECINFO_STYLE_CURRENT_FH
,
9307 struct nfs4_secinfo_res res
= {
9310 struct rpc_message msg
= {
9311 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SECINFO_NO_NAME
],
9315 struct rpc_clnt
*clnt
= server
->client
;
9316 const struct cred
*cred
= NULL
;
9319 if (use_integrity
) {
9320 clnt
= server
->nfs_client
->cl_rpcclient
;
9321 cred
= nfs4_get_clid_cred(server
->nfs_client
);
9322 msg
.rpc_cred
= cred
;
9325 dprintk("--> %s\n", __func__
);
9326 status
= nfs4_call_sync(clnt
, server
, &msg
, &args
.seq_args
,
9328 dprintk("<-- %s status=%d\n", __func__
, status
);
9336 nfs41_proc_secinfo_no_name(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
9337 struct nfs_fsinfo
*info
, struct nfs4_secinfo_flavors
*flavors
)
9339 struct nfs4_exception exception
= {
9340 .interruptible
= true,
9344 /* first try using integrity protection */
9345 err
= -NFS4ERR_WRONGSEC
;
9347 /* try to use integrity protection with machine cred */
9348 if (_nfs4_is_integrity_protected(server
->nfs_client
))
9349 err
= _nfs41_proc_secinfo_no_name(server
, fhandle
, info
,
9353 * if unable to use integrity protection, or SECINFO with
9354 * integrity protection returns NFS4ERR_WRONGSEC (which is
9355 * disallowed by spec, but exists in deployed servers) use
9356 * the current filesystem's rpc_client and the user cred.
9358 if (err
== -NFS4ERR_WRONGSEC
)
9359 err
= _nfs41_proc_secinfo_no_name(server
, fhandle
, info
,
9364 case -NFS4ERR_WRONGSEC
:
9368 err
= nfs4_handle_exception(server
, err
, &exception
);
9370 } while (exception
.retry
);
9376 nfs41_find_root_sec(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
9377 struct nfs_fsinfo
*info
)
9381 rpc_authflavor_t flavor
= RPC_AUTH_MAXFLAVOR
;
9382 struct nfs4_secinfo_flavors
*flavors
;
9383 struct nfs4_secinfo4
*secinfo
;
9386 page
= alloc_page(GFP_KERNEL
);
9392 flavors
= page_address(page
);
9393 err
= nfs41_proc_secinfo_no_name(server
, fhandle
, info
, flavors
);
9396 * Fall back on "guess and check" method if
9397 * the server doesn't support SECINFO_NO_NAME
9399 if (err
== -NFS4ERR_WRONGSEC
|| err
== -ENOTSUPP
) {
9400 err
= nfs4_find_root_sec(server
, fhandle
, info
);
9406 for (i
= 0; i
< flavors
->num_flavors
; i
++) {
9407 secinfo
= &flavors
->flavors
[i
];
9409 switch (secinfo
->flavor
) {
9413 flavor
= rpcauth_get_pseudoflavor(secinfo
->flavor
,
9414 &secinfo
->flavor_info
);
9417 flavor
= RPC_AUTH_MAXFLAVOR
;
9421 if (!nfs_auth_info_match(&server
->auth_info
, flavor
))
9422 flavor
= RPC_AUTH_MAXFLAVOR
;
9424 if (flavor
!= RPC_AUTH_MAXFLAVOR
) {
9425 err
= nfs4_lookup_root_sec(server
, fhandle
,
9432 if (flavor
== RPC_AUTH_MAXFLAVOR
)
9443 static int _nfs41_test_stateid(struct nfs_server
*server
,
9444 nfs4_stateid
*stateid
,
9445 const struct cred
*cred
)
9448 struct nfs41_test_stateid_args args
= {
9451 struct nfs41_test_stateid_res res
;
9452 struct rpc_message msg
= {
9453 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_TEST_STATEID
],
9458 struct rpc_clnt
*rpc_client
= server
->client
;
9460 nfs4_state_protect(server
->nfs_client
, NFS_SP4_MACH_CRED_STATEID
,
9463 dprintk("NFS call test_stateid %p\n", stateid
);
9464 nfs4_init_sequence(&args
.seq_args
, &res
.seq_res
, 0, 1);
9465 status
= nfs4_call_sync_sequence(rpc_client
, server
, &msg
,
9466 &args
.seq_args
, &res
.seq_res
);
9467 if (status
!= NFS_OK
) {
9468 dprintk("NFS reply test_stateid: failed, %d\n", status
);
9471 dprintk("NFS reply test_stateid: succeeded, %d\n", -res
.status
);
9475 static void nfs4_handle_delay_or_session_error(struct nfs_server
*server
,
9476 int err
, struct nfs4_exception
*exception
)
9478 exception
->retry
= 0;
9480 case -NFS4ERR_DELAY
:
9481 case -NFS4ERR_RETRY_UNCACHED_REP
:
9482 nfs4_handle_exception(server
, err
, exception
);
9484 case -NFS4ERR_BADSESSION
:
9485 case -NFS4ERR_BADSLOT
:
9486 case -NFS4ERR_BAD_HIGH_SLOT
:
9487 case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION
:
9488 case -NFS4ERR_DEADSESSION
:
9489 nfs4_do_handle_exception(server
, err
, exception
);
9494 * nfs41_test_stateid - perform a TEST_STATEID operation
9496 * @server: server / transport on which to perform the operation
9497 * @stateid: state ID to test
9500 * Returns NFS_OK if the server recognizes that "stateid" is valid.
9501 * Otherwise a negative NFS4ERR value is returned if the operation
9502 * failed or the state ID is not currently valid.
9504 static int nfs41_test_stateid(struct nfs_server
*server
,
9505 nfs4_stateid
*stateid
,
9506 const struct cred
*cred
)
9508 struct nfs4_exception exception
= {
9509 .interruptible
= true,
9513 err
= _nfs41_test_stateid(server
, stateid
, cred
);
9514 nfs4_handle_delay_or_session_error(server
, err
, &exception
);
9515 } while (exception
.retry
);
9519 struct nfs_free_stateid_data
{
9520 struct nfs_server
*server
;
9521 struct nfs41_free_stateid_args args
;
9522 struct nfs41_free_stateid_res res
;
9525 static void nfs41_free_stateid_prepare(struct rpc_task
*task
, void *calldata
)
9527 struct nfs_free_stateid_data
*data
= calldata
;
9528 nfs4_setup_sequence(data
->server
->nfs_client
,
9529 &data
->args
.seq_args
,
9534 static void nfs41_free_stateid_done(struct rpc_task
*task
, void *calldata
)
9536 struct nfs_free_stateid_data
*data
= calldata
;
9538 nfs41_sequence_done(task
, &data
->res
.seq_res
);
9540 switch (task
->tk_status
) {
9541 case -NFS4ERR_DELAY
:
9542 if (nfs4_async_handle_error(task
, data
->server
, NULL
, NULL
) == -EAGAIN
)
9543 rpc_restart_call_prepare(task
);
9547 static void nfs41_free_stateid_release(void *calldata
)
9552 static const struct rpc_call_ops nfs41_free_stateid_ops
= {
9553 .rpc_call_prepare
= nfs41_free_stateid_prepare
,
9554 .rpc_call_done
= nfs41_free_stateid_done
,
9555 .rpc_release
= nfs41_free_stateid_release
,
9559 * nfs41_free_stateid - perform a FREE_STATEID operation
9561 * @server: server / transport on which to perform the operation
9562 * @stateid: state ID to release
9564 * @privileged: set to true if this call needs to be privileged
9566 * Note: this function is always asynchronous.
9568 static int nfs41_free_stateid(struct nfs_server
*server
,
9569 const nfs4_stateid
*stateid
,
9570 const struct cred
*cred
,
9573 struct rpc_message msg
= {
9574 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_FREE_STATEID
],
9577 struct rpc_task_setup task_setup
= {
9578 .rpc_client
= server
->client
,
9579 .rpc_message
= &msg
,
9580 .callback_ops
= &nfs41_free_stateid_ops
,
9581 .flags
= RPC_TASK_ASYNC
,
9583 struct nfs_free_stateid_data
*data
;
9584 struct rpc_task
*task
;
9586 nfs4_state_protect(server
->nfs_client
, NFS_SP4_MACH_CRED_STATEID
,
9587 &task_setup
.rpc_client
, &msg
);
9589 dprintk("NFS call free_stateid %p\n", stateid
);
9590 data
= kmalloc(sizeof(*data
), GFP_NOFS
);
9593 data
->server
= server
;
9594 nfs4_stateid_copy(&data
->args
.stateid
, stateid
);
9596 task_setup
.callback_data
= data
;
9598 msg
.rpc_argp
= &data
->args
;
9599 msg
.rpc_resp
= &data
->res
;
9600 nfs4_init_sequence(&data
->args
.seq_args
, &data
->res
.seq_res
, 1, privileged
);
9601 task
= rpc_run_task(&task_setup
);
9603 return PTR_ERR(task
);
9609 nfs41_free_lock_state(struct nfs_server
*server
, struct nfs4_lock_state
*lsp
)
9611 const struct cred
*cred
= lsp
->ls_state
->owner
->so_cred
;
9613 nfs41_free_stateid(server
, &lsp
->ls_stateid
, cred
, false);
9614 nfs4_free_lock_state(server
, lsp
);
9617 static bool nfs41_match_stateid(const nfs4_stateid
*s1
,
9618 const nfs4_stateid
*s2
)
9620 if (s1
->type
!= s2
->type
)
9623 if (memcmp(s1
->other
, s2
->other
, sizeof(s1
->other
)) != 0)
9626 if (s1
->seqid
== s2
->seqid
)
9629 return s1
->seqid
== 0 || s2
->seqid
== 0;
9632 #endif /* CONFIG_NFS_V4_1 */
9634 static bool nfs4_match_stateid(const nfs4_stateid
*s1
,
9635 const nfs4_stateid
*s2
)
9637 return nfs4_stateid_match(s1
, s2
);
9641 static const struct nfs4_state_recovery_ops nfs40_reboot_recovery_ops
= {
9642 .owner_flag_bit
= NFS_OWNER_RECLAIM_REBOOT
,
9643 .state_flag_bit
= NFS_STATE_RECLAIM_REBOOT
,
9644 .recover_open
= nfs4_open_reclaim
,
9645 .recover_lock
= nfs4_lock_reclaim
,
9646 .establish_clid
= nfs4_init_clientid
,
9647 .detect_trunking
= nfs40_discover_server_trunking
,
9650 #if defined(CONFIG_NFS_V4_1)
9651 static const struct nfs4_state_recovery_ops nfs41_reboot_recovery_ops
= {
9652 .owner_flag_bit
= NFS_OWNER_RECLAIM_REBOOT
,
9653 .state_flag_bit
= NFS_STATE_RECLAIM_REBOOT
,
9654 .recover_open
= nfs4_open_reclaim
,
9655 .recover_lock
= nfs4_lock_reclaim
,
9656 .establish_clid
= nfs41_init_clientid
,
9657 .reclaim_complete
= nfs41_proc_reclaim_complete
,
9658 .detect_trunking
= nfs41_discover_server_trunking
,
9660 #endif /* CONFIG_NFS_V4_1 */
9662 static const struct nfs4_state_recovery_ops nfs40_nograce_recovery_ops
= {
9663 .owner_flag_bit
= NFS_OWNER_RECLAIM_NOGRACE
,
9664 .state_flag_bit
= NFS_STATE_RECLAIM_NOGRACE
,
9665 .recover_open
= nfs40_open_expired
,
9666 .recover_lock
= nfs4_lock_expired
,
9667 .establish_clid
= nfs4_init_clientid
,
9670 #if defined(CONFIG_NFS_V4_1)
9671 static const struct nfs4_state_recovery_ops nfs41_nograce_recovery_ops
= {
9672 .owner_flag_bit
= NFS_OWNER_RECLAIM_NOGRACE
,
9673 .state_flag_bit
= NFS_STATE_RECLAIM_NOGRACE
,
9674 .recover_open
= nfs41_open_expired
,
9675 .recover_lock
= nfs41_lock_expired
,
9676 .establish_clid
= nfs41_init_clientid
,
9678 #endif /* CONFIG_NFS_V4_1 */
9680 static const struct nfs4_state_maintenance_ops nfs40_state_renewal_ops
= {
9681 .sched_state_renewal
= nfs4_proc_async_renew
,
9682 .get_state_renewal_cred
= nfs4_get_renew_cred
,
9683 .renew_lease
= nfs4_proc_renew
,
9686 #if defined(CONFIG_NFS_V4_1)
9687 static const struct nfs4_state_maintenance_ops nfs41_state_renewal_ops
= {
9688 .sched_state_renewal
= nfs41_proc_async_sequence
,
9689 .get_state_renewal_cred
= nfs4_get_machine_cred
,
9690 .renew_lease
= nfs4_proc_sequence
,
9694 static const struct nfs4_mig_recovery_ops nfs40_mig_recovery_ops
= {
9695 .get_locations
= _nfs40_proc_get_locations
,
9696 .fsid_present
= _nfs40_proc_fsid_present
,
9699 #if defined(CONFIG_NFS_V4_1)
9700 static const struct nfs4_mig_recovery_ops nfs41_mig_recovery_ops
= {
9701 .get_locations
= _nfs41_proc_get_locations
,
9702 .fsid_present
= _nfs41_proc_fsid_present
,
9704 #endif /* CONFIG_NFS_V4_1 */
9706 static const struct nfs4_minor_version_ops nfs_v4_0_minor_ops
= {
9708 .init_caps
= NFS_CAP_READDIRPLUS
9709 | NFS_CAP_ATOMIC_OPEN
9710 | NFS_CAP_POSIX_LOCK
,
9711 .init_client
= nfs40_init_client
,
9712 .shutdown_client
= nfs40_shutdown_client
,
9713 .match_stateid
= nfs4_match_stateid
,
9714 .find_root_sec
= nfs4_find_root_sec
,
9715 .free_lock_state
= nfs4_release_lockowner
,
9716 .test_and_free_expired
= nfs40_test_and_free_expired_stateid
,
9717 .alloc_seqid
= nfs_alloc_seqid
,
9718 .call_sync_ops
= &nfs40_call_sync_ops
,
9719 .reboot_recovery_ops
= &nfs40_reboot_recovery_ops
,
9720 .nograce_recovery_ops
= &nfs40_nograce_recovery_ops
,
9721 .state_renewal_ops
= &nfs40_state_renewal_ops
,
9722 .mig_recovery_ops
= &nfs40_mig_recovery_ops
,
9725 #if defined(CONFIG_NFS_V4_1)
9726 static struct nfs_seqid
*
9727 nfs_alloc_no_seqid(struct nfs_seqid_counter
*arg1
, gfp_t arg2
)
9732 static const struct nfs4_minor_version_ops nfs_v4_1_minor_ops
= {
9734 .init_caps
= NFS_CAP_READDIRPLUS
9735 | NFS_CAP_ATOMIC_OPEN
9736 | NFS_CAP_POSIX_LOCK
9737 | NFS_CAP_STATEID_NFSV41
9738 | NFS_CAP_ATOMIC_OPEN_V1
9740 .init_client
= nfs41_init_client
,
9741 .shutdown_client
= nfs41_shutdown_client
,
9742 .match_stateid
= nfs41_match_stateid
,
9743 .find_root_sec
= nfs41_find_root_sec
,
9744 .free_lock_state
= nfs41_free_lock_state
,
9745 .test_and_free_expired
= nfs41_test_and_free_expired_stateid
,
9746 .alloc_seqid
= nfs_alloc_no_seqid
,
9747 .session_trunk
= nfs4_test_session_trunk
,
9748 .call_sync_ops
= &nfs41_call_sync_ops
,
9749 .reboot_recovery_ops
= &nfs41_reboot_recovery_ops
,
9750 .nograce_recovery_ops
= &nfs41_nograce_recovery_ops
,
9751 .state_renewal_ops
= &nfs41_state_renewal_ops
,
9752 .mig_recovery_ops
= &nfs41_mig_recovery_ops
,
9756 #if defined(CONFIG_NFS_V4_2)
9757 static const struct nfs4_minor_version_ops nfs_v4_2_minor_ops
= {
9759 .init_caps
= NFS_CAP_READDIRPLUS
9760 | NFS_CAP_ATOMIC_OPEN
9761 | NFS_CAP_POSIX_LOCK
9762 | NFS_CAP_STATEID_NFSV41
9763 | NFS_CAP_ATOMIC_OPEN_V1
9767 | NFS_CAP_OFFLOAD_CANCEL
9768 | NFS_CAP_DEALLOCATE
9770 | NFS_CAP_LAYOUTSTATS
9772 | NFS_CAP_LAYOUTERROR
,
9773 .init_client
= nfs41_init_client
,
9774 .shutdown_client
= nfs41_shutdown_client
,
9775 .match_stateid
= nfs41_match_stateid
,
9776 .find_root_sec
= nfs41_find_root_sec
,
9777 .free_lock_state
= nfs41_free_lock_state
,
9778 .call_sync_ops
= &nfs41_call_sync_ops
,
9779 .test_and_free_expired
= nfs41_test_and_free_expired_stateid
,
9780 .alloc_seqid
= nfs_alloc_no_seqid
,
9781 .session_trunk
= nfs4_test_session_trunk
,
9782 .reboot_recovery_ops
= &nfs41_reboot_recovery_ops
,
9783 .nograce_recovery_ops
= &nfs41_nograce_recovery_ops
,
9784 .state_renewal_ops
= &nfs41_state_renewal_ops
,
9785 .mig_recovery_ops
= &nfs41_mig_recovery_ops
,
9789 const struct nfs4_minor_version_ops
*nfs_v4_minor_ops
[] = {
9790 [0] = &nfs_v4_0_minor_ops
,
9791 #if defined(CONFIG_NFS_V4_1)
9792 [1] = &nfs_v4_1_minor_ops
,
9794 #if defined(CONFIG_NFS_V4_2)
9795 [2] = &nfs_v4_2_minor_ops
,
9799 static ssize_t
nfs4_listxattr(struct dentry
*dentry
, char *list
, size_t size
)
9801 ssize_t error
, error2
;
9803 error
= generic_listxattr(dentry
, list
, size
);
9811 error2
= nfs4_listxattr_nfs4_label(d_inode(dentry
), list
, size
);
9814 return error
+ error2
;
9817 static const struct inode_operations nfs4_dir_inode_operations
= {
9818 .create
= nfs_create
,
9819 .lookup
= nfs_lookup
,
9820 .atomic_open
= nfs_atomic_open
,
9822 .unlink
= nfs_unlink
,
9823 .symlink
= nfs_symlink
,
9827 .rename
= nfs_rename
,
9828 .permission
= nfs_permission
,
9829 .getattr
= nfs_getattr
,
9830 .setattr
= nfs_setattr
,
9831 .listxattr
= nfs4_listxattr
,
9834 static const struct inode_operations nfs4_file_inode_operations
= {
9835 .permission
= nfs_permission
,
9836 .getattr
= nfs_getattr
,
9837 .setattr
= nfs_setattr
,
9838 .listxattr
= nfs4_listxattr
,
9841 const struct nfs_rpc_ops nfs_v4_clientops
= {
9842 .version
= 4, /* protocol version */
9843 .dentry_ops
= &nfs4_dentry_operations
,
9844 .dir_inode_ops
= &nfs4_dir_inode_operations
,
9845 .file_inode_ops
= &nfs4_file_inode_operations
,
9846 .file_ops
= &nfs4_file_operations
,
9847 .getroot
= nfs4_proc_get_root
,
9848 .submount
= nfs4_submount
,
9849 .try_mount
= nfs4_try_mount
,
9850 .getattr
= nfs4_proc_getattr
,
9851 .setattr
= nfs4_proc_setattr
,
9852 .lookup
= nfs4_proc_lookup
,
9853 .lookupp
= nfs4_proc_lookupp
,
9854 .access
= nfs4_proc_access
,
9855 .readlink
= nfs4_proc_readlink
,
9856 .create
= nfs4_proc_create
,
9857 .remove
= nfs4_proc_remove
,
9858 .unlink_setup
= nfs4_proc_unlink_setup
,
9859 .unlink_rpc_prepare
= nfs4_proc_unlink_rpc_prepare
,
9860 .unlink_done
= nfs4_proc_unlink_done
,
9861 .rename_setup
= nfs4_proc_rename_setup
,
9862 .rename_rpc_prepare
= nfs4_proc_rename_rpc_prepare
,
9863 .rename_done
= nfs4_proc_rename_done
,
9864 .link
= nfs4_proc_link
,
9865 .symlink
= nfs4_proc_symlink
,
9866 .mkdir
= nfs4_proc_mkdir
,
9867 .rmdir
= nfs4_proc_rmdir
,
9868 .readdir
= nfs4_proc_readdir
,
9869 .mknod
= nfs4_proc_mknod
,
9870 .statfs
= nfs4_proc_statfs
,
9871 .fsinfo
= nfs4_proc_fsinfo
,
9872 .pathconf
= nfs4_proc_pathconf
,
9873 .set_capabilities
= nfs4_server_capabilities
,
9874 .decode_dirent
= nfs4_decode_dirent
,
9875 .pgio_rpc_prepare
= nfs4_proc_pgio_rpc_prepare
,
9876 .read_setup
= nfs4_proc_read_setup
,
9877 .read_done
= nfs4_read_done
,
9878 .write_setup
= nfs4_proc_write_setup
,
9879 .write_done
= nfs4_write_done
,
9880 .commit_setup
= nfs4_proc_commit_setup
,
9881 .commit_rpc_prepare
= nfs4_proc_commit_rpc_prepare
,
9882 .commit_done
= nfs4_commit_done
,
9883 .lock
= nfs4_proc_lock
,
9884 .clear_acl_cache
= nfs4_zap_acl_attr
,
9885 .close_context
= nfs4_close_context
,
9886 .open_context
= nfs4_atomic_open
,
9887 .have_delegation
= nfs4_have_delegation
,
9888 .alloc_client
= nfs4_alloc_client
,
9889 .init_client
= nfs4_init_client
,
9890 .free_client
= nfs4_free_client
,
9891 .create_server
= nfs4_create_server
,
9892 .clone_server
= nfs_clone_server
,
9895 static const struct xattr_handler nfs4_xattr_nfs4_acl_handler
= {
9896 .name
= XATTR_NAME_NFSV4_ACL
,
9897 .list
= nfs4_xattr_list_nfs4_acl
,
9898 .get
= nfs4_xattr_get_nfs4_acl
,
9899 .set
= nfs4_xattr_set_nfs4_acl
,
9902 const struct xattr_handler
*nfs4_xattr_handlers
[] = {
9903 &nfs4_xattr_nfs4_acl_handler
,
9904 #ifdef CONFIG_NFS_V4_SECURITY_LABEL
9905 &nfs4_xattr_nfs4_label_handler
,