4 * Client-side procedure declarations for NFSv4.
6 * Copyright (c) 2002 The Regents of the University of Michigan.
9 * Kendrick Smith <kmsmith@umich.edu>
10 * Andy Adamson <andros@umich.edu>
12 * Redistribution and use in source and binary forms, with or without
13 * modification, are permitted provided that the following conditions
16 * 1. Redistributions of source code must retain the above copyright
17 * notice, this list of conditions and the following disclaimer.
18 * 2. Redistributions in binary form must reproduce the above copyright
19 * notice, this list of conditions and the following disclaimer in the
20 * documentation and/or other materials provided with the distribution.
21 * 3. Neither the name of the University nor the names of its
22 * contributors may be used to endorse or promote products derived
23 * from this software without specific prior written permission.
25 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
26 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
27 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
28 * DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
29 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
30 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
31 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
32 * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
33 * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
34 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
35 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
39 #include <linux/delay.h>
40 #include <linux/errno.h>
41 #include <linux/string.h>
42 #include <linux/ratelimit.h>
43 #include <linux/printk.h>
44 #include <linux/slab.h>
45 #include <linux/sunrpc/clnt.h>
46 #include <linux/nfs.h>
47 #include <linux/nfs4.h>
48 #include <linux/nfs_fs.h>
49 #include <linux/nfs_page.h>
50 #include <linux/nfs_mount.h>
51 #include <linux/namei.h>
52 #include <linux/mount.h>
53 #include <linux/module.h>
54 #include <linux/xattr.h>
55 #include <linux/utsname.h>
56 #include <linux/freezer.h>
59 #include "delegation.h"
65 #include "nfs4idmap.h"
66 #include "nfs4session.h"
69 #include "nfs4trace.h"
71 #define NFSDBG_FACILITY NFSDBG_PROC
73 #define NFS4_POLL_RETRY_MIN (HZ/10)
74 #define NFS4_POLL_RETRY_MAX (15*HZ)
76 /* file attributes which can be mapped to nfs attributes */
77 #define NFS4_VALID_ATTRS (ATTR_MODE \
88 static int _nfs4_proc_open(struct nfs4_opendata
*data
);
89 static int _nfs4_recover_proc_open(struct nfs4_opendata
*data
);
90 static int nfs4_do_fsinfo(struct nfs_server
*, struct nfs_fh
*, struct nfs_fsinfo
*);
91 static void nfs_fixup_referral_attributes(struct nfs_fattr
*fattr
);
92 static int nfs4_proc_getattr(struct nfs_server
*, struct nfs_fh
*, struct nfs_fattr
*, struct nfs4_label
*label
);
93 static int _nfs4_proc_getattr(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fattr
*fattr
, struct nfs4_label
*label
);
94 static int nfs4_do_setattr(struct inode
*inode
, struct rpc_cred
*cred
,
95 struct nfs_fattr
*fattr
, struct iattr
*sattr
,
96 struct nfs_open_context
*ctx
, struct nfs4_label
*ilabel
,
97 struct nfs4_label
*olabel
);
98 #ifdef CONFIG_NFS_V4_1
99 static int nfs41_test_stateid(struct nfs_server
*, nfs4_stateid
*,
101 static int nfs41_free_stateid(struct nfs_server
*, const nfs4_stateid
*,
102 struct rpc_cred
*, bool);
105 #ifdef CONFIG_NFS_V4_SECURITY_LABEL
106 static inline struct nfs4_label
*
107 nfs4_label_init_security(struct inode
*dir
, struct dentry
*dentry
,
108 struct iattr
*sattr
, struct nfs4_label
*label
)
115 if (nfs_server_capable(dir
, NFS_CAP_SECURITY_LABEL
) == 0)
118 err
= security_dentry_init_security(dentry
, sattr
->ia_mode
,
119 &dentry
->d_name
, (void **)&label
->label
, &label
->len
);
126 nfs4_label_release_security(struct nfs4_label
*label
)
129 security_release_secctx(label
->label
, label
->len
);
131 static inline u32
*nfs4_bitmask(struct nfs_server
*server
, struct nfs4_label
*label
)
134 return server
->attr_bitmask
;
136 return server
->attr_bitmask_nl
;
139 static inline struct nfs4_label
*
140 nfs4_label_init_security(struct inode
*dir
, struct dentry
*dentry
,
141 struct iattr
*sattr
, struct nfs4_label
*l
)
144 nfs4_label_release_security(struct nfs4_label
*label
)
147 nfs4_bitmask(struct nfs_server
*server
, struct nfs4_label
*label
)
148 { return server
->attr_bitmask
; }
151 /* Prevent leaks of NFSv4 errors into userland */
152 static int nfs4_map_errors(int err
)
157 case -NFS4ERR_RESOURCE
:
158 case -NFS4ERR_LAYOUTTRYLATER
:
159 case -NFS4ERR_RECALLCONFLICT
:
161 case -NFS4ERR_WRONGSEC
:
162 case -NFS4ERR_WRONG_CRED
:
164 case -NFS4ERR_BADOWNER
:
165 case -NFS4ERR_BADNAME
:
167 case -NFS4ERR_SHARE_DENIED
:
169 case -NFS4ERR_MINOR_VERS_MISMATCH
:
170 return -EPROTONOSUPPORT
;
171 case -NFS4ERR_FILE_OPEN
:
174 dprintk("%s could not handle NFSv4 error %d\n",
182 * This is our standard bitmap for GETATTR requests.
184 const u32 nfs4_fattr_bitmap
[3] = {
186 | FATTR4_WORD0_CHANGE
189 | FATTR4_WORD0_FILEID
,
191 | FATTR4_WORD1_NUMLINKS
193 | FATTR4_WORD1_OWNER_GROUP
194 | FATTR4_WORD1_RAWDEV
195 | FATTR4_WORD1_SPACE_USED
196 | FATTR4_WORD1_TIME_ACCESS
197 | FATTR4_WORD1_TIME_METADATA
198 | FATTR4_WORD1_TIME_MODIFY
199 | FATTR4_WORD1_MOUNTED_ON_FILEID
,
200 #ifdef CONFIG_NFS_V4_SECURITY_LABEL
201 FATTR4_WORD2_SECURITY_LABEL
205 static const u32 nfs4_pnfs_open_bitmap
[3] = {
207 | FATTR4_WORD0_CHANGE
210 | FATTR4_WORD0_FILEID
,
212 | FATTR4_WORD1_NUMLINKS
214 | FATTR4_WORD1_OWNER_GROUP
215 | FATTR4_WORD1_RAWDEV
216 | FATTR4_WORD1_SPACE_USED
217 | FATTR4_WORD1_TIME_ACCESS
218 | FATTR4_WORD1_TIME_METADATA
219 | FATTR4_WORD1_TIME_MODIFY
,
220 FATTR4_WORD2_MDSTHRESHOLD
221 #ifdef CONFIG_NFS_V4_SECURITY_LABEL
222 | FATTR4_WORD2_SECURITY_LABEL
226 static const u32 nfs4_open_noattr_bitmap
[3] = {
228 | FATTR4_WORD0_FILEID
,
231 const u32 nfs4_statfs_bitmap
[3] = {
232 FATTR4_WORD0_FILES_AVAIL
233 | FATTR4_WORD0_FILES_FREE
234 | FATTR4_WORD0_FILES_TOTAL
,
235 FATTR4_WORD1_SPACE_AVAIL
236 | FATTR4_WORD1_SPACE_FREE
237 | FATTR4_WORD1_SPACE_TOTAL
240 const u32 nfs4_pathconf_bitmap
[3] = {
242 | FATTR4_WORD0_MAXNAME
,
246 const u32 nfs4_fsinfo_bitmap
[3] = { FATTR4_WORD0_MAXFILESIZE
247 | FATTR4_WORD0_MAXREAD
248 | FATTR4_WORD0_MAXWRITE
249 | FATTR4_WORD0_LEASE_TIME
,
250 FATTR4_WORD1_TIME_DELTA
251 | FATTR4_WORD1_FS_LAYOUT_TYPES
,
252 FATTR4_WORD2_LAYOUT_BLKSIZE
253 | FATTR4_WORD2_CLONE_BLKSIZE
256 const u32 nfs4_fs_locations_bitmap
[3] = {
258 | FATTR4_WORD0_CHANGE
261 | FATTR4_WORD0_FILEID
262 | FATTR4_WORD0_FS_LOCATIONS
,
264 | FATTR4_WORD1_NUMLINKS
266 | FATTR4_WORD1_OWNER_GROUP
267 | FATTR4_WORD1_RAWDEV
268 | FATTR4_WORD1_SPACE_USED
269 | FATTR4_WORD1_TIME_ACCESS
270 | FATTR4_WORD1_TIME_METADATA
271 | FATTR4_WORD1_TIME_MODIFY
272 | FATTR4_WORD1_MOUNTED_ON_FILEID
,
275 static void nfs4_setup_readdir(u64 cookie
, __be32
*verifier
, struct dentry
*dentry
,
276 struct nfs4_readdir_arg
*readdir
)
278 unsigned int attrs
= FATTR4_WORD0_FILEID
| FATTR4_WORD0_TYPE
;
282 readdir
->cookie
= cookie
;
283 memcpy(&readdir
->verifier
, verifier
, sizeof(readdir
->verifier
));
288 memset(&readdir
->verifier
, 0, sizeof(readdir
->verifier
));
293 * NFSv4 servers do not return entries for '.' and '..'
294 * Therefore, we fake these entries here. We let '.'
295 * have cookie 0 and '..' have cookie 1. Note that
296 * when talking to the server, we always send cookie 0
299 start
= p
= kmap_atomic(*readdir
->pages
);
302 *p
++ = xdr_one
; /* next */
303 *p
++ = xdr_zero
; /* cookie, first word */
304 *p
++ = xdr_one
; /* cookie, second word */
305 *p
++ = xdr_one
; /* entry len */
306 memcpy(p
, ".\0\0\0", 4); /* entry */
308 *p
++ = xdr_one
; /* bitmap length */
309 *p
++ = htonl(attrs
); /* bitmap */
310 *p
++ = htonl(12); /* attribute buffer length */
311 *p
++ = htonl(NF4DIR
);
312 p
= xdr_encode_hyper(p
, NFS_FILEID(d_inode(dentry
)));
315 *p
++ = xdr_one
; /* next */
316 *p
++ = xdr_zero
; /* cookie, first word */
317 *p
++ = xdr_two
; /* cookie, second word */
318 *p
++ = xdr_two
; /* entry len */
319 memcpy(p
, "..\0\0", 4); /* entry */
321 *p
++ = xdr_one
; /* bitmap length */
322 *p
++ = htonl(attrs
); /* bitmap */
323 *p
++ = htonl(12); /* attribute buffer length */
324 *p
++ = htonl(NF4DIR
);
325 p
= xdr_encode_hyper(p
, NFS_FILEID(d_inode(dentry
->d_parent
)));
327 readdir
->pgbase
= (char *)p
- (char *)start
;
328 readdir
->count
-= readdir
->pgbase
;
329 kunmap_atomic(start
);
332 static void nfs4_test_and_free_stateid(struct nfs_server
*server
,
333 nfs4_stateid
*stateid
,
334 struct rpc_cred
*cred
)
336 const struct nfs4_minor_version_ops
*ops
= server
->nfs_client
->cl_mvops
;
338 ops
->test_and_free_expired(server
, stateid
, cred
);
341 static void __nfs4_free_revoked_stateid(struct nfs_server
*server
,
342 nfs4_stateid
*stateid
,
343 struct rpc_cred
*cred
)
345 stateid
->type
= NFS4_REVOKED_STATEID_TYPE
;
346 nfs4_test_and_free_stateid(server
, stateid
, cred
);
349 static void nfs4_free_revoked_stateid(struct nfs_server
*server
,
350 const nfs4_stateid
*stateid
,
351 struct rpc_cred
*cred
)
355 nfs4_stateid_copy(&tmp
, stateid
);
356 __nfs4_free_revoked_stateid(server
, &tmp
, cred
);
359 static long nfs4_update_delay(long *timeout
)
363 return NFS4_POLL_RETRY_MAX
;
365 *timeout
= NFS4_POLL_RETRY_MIN
;
366 if (*timeout
> NFS4_POLL_RETRY_MAX
)
367 *timeout
= NFS4_POLL_RETRY_MAX
;
373 static int nfs4_delay(struct rpc_clnt
*clnt
, long *timeout
)
379 freezable_schedule_timeout_killable_unsafe(
380 nfs4_update_delay(timeout
));
381 if (fatal_signal_pending(current
))
386 /* This is the error handling routine for processes that are allowed
389 static int nfs4_do_handle_exception(struct nfs_server
*server
,
390 int errorcode
, struct nfs4_exception
*exception
)
392 struct nfs_client
*clp
= server
->nfs_client
;
393 struct nfs4_state
*state
= exception
->state
;
394 const nfs4_stateid
*stateid
= exception
->stateid
;
395 struct inode
*inode
= exception
->inode
;
398 exception
->delay
= 0;
399 exception
->recovering
= 0;
400 exception
->retry
= 0;
402 if (stateid
== NULL
&& state
!= NULL
)
403 stateid
= &state
->stateid
;
408 case -NFS4ERR_DELEG_REVOKED
:
409 case -NFS4ERR_ADMIN_REVOKED
:
410 case -NFS4ERR_EXPIRED
:
411 case -NFS4ERR_BAD_STATEID
:
412 if (inode
!= NULL
&& stateid
!= NULL
) {
413 nfs_inode_find_state_and_recover(inode
,
415 goto wait_on_recovery
;
417 case -NFS4ERR_OPENMODE
:
421 err
= nfs_async_inode_return_delegation(inode
,
424 goto wait_on_recovery
;
425 if (stateid
!= NULL
&& stateid
->type
== NFS4_DELEGATION_STATEID_TYPE
) {
426 exception
->retry
= 1;
432 ret
= nfs4_schedule_stateid_recovery(server
, state
);
435 goto wait_on_recovery
;
436 case -NFS4ERR_STALE_STATEID
:
437 case -NFS4ERR_STALE_CLIENTID
:
438 nfs4_schedule_lease_recovery(clp
);
439 goto wait_on_recovery
;
441 ret
= nfs4_schedule_migration_recovery(server
);
444 goto wait_on_recovery
;
445 case -NFS4ERR_LEASE_MOVED
:
446 nfs4_schedule_lease_moved_recovery(clp
);
447 goto wait_on_recovery
;
448 #if defined(CONFIG_NFS_V4_1)
449 case -NFS4ERR_BADSESSION
:
450 case -NFS4ERR_BADSLOT
:
451 case -NFS4ERR_BAD_HIGH_SLOT
:
452 case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION
:
453 case -NFS4ERR_DEADSESSION
:
454 case -NFS4ERR_SEQ_FALSE_RETRY
:
455 case -NFS4ERR_SEQ_MISORDERED
:
456 dprintk("%s ERROR: %d Reset session\n", __func__
,
458 nfs4_schedule_session_recovery(clp
->cl_session
, errorcode
);
459 goto wait_on_recovery
;
460 #endif /* defined(CONFIG_NFS_V4_1) */
461 case -NFS4ERR_FILE_OPEN
:
462 if (exception
->timeout
> HZ
) {
463 /* We have retried a decent amount, time to
470 nfs_inc_server_stats(server
, NFSIOS_DELAY
);
472 case -NFS4ERR_LAYOUTTRYLATER
:
473 case -NFS4ERR_RECALLCONFLICT
:
474 exception
->delay
= 1;
477 case -NFS4ERR_RETRY_UNCACHED_REP
:
478 case -NFS4ERR_OLD_STATEID
:
479 exception
->retry
= 1;
481 case -NFS4ERR_BADOWNER
:
482 /* The following works around a Linux server bug! */
483 case -NFS4ERR_BADNAME
:
484 if (server
->caps
& NFS_CAP_UIDGID_NOMAP
) {
485 server
->caps
&= ~NFS_CAP_UIDGID_NOMAP
;
486 exception
->retry
= 1;
487 printk(KERN_WARNING
"NFS: v4 server %s "
488 "does not accept raw "
490 "Reenabling the idmapper.\n",
491 server
->nfs_client
->cl_hostname
);
494 /* We failed to handle the error */
495 return nfs4_map_errors(ret
);
497 exception
->recovering
= 1;
501 /* This is the error handling routine for processes that are allowed
504 int nfs4_handle_exception(struct nfs_server
*server
, int errorcode
, struct nfs4_exception
*exception
)
506 struct nfs_client
*clp
= server
->nfs_client
;
509 ret
= nfs4_do_handle_exception(server
, errorcode
, exception
);
510 if (exception
->delay
) {
511 ret
= nfs4_delay(server
->client
, &exception
->timeout
);
514 if (exception
->recovering
) {
515 ret
= nfs4_wait_clnt_recover(clp
);
516 if (test_bit(NFS_MIG_FAILED
, &server
->mig_status
))
523 exception
->retry
= 1;
528 nfs4_async_handle_exception(struct rpc_task
*task
, struct nfs_server
*server
,
529 int errorcode
, struct nfs4_exception
*exception
)
531 struct nfs_client
*clp
= server
->nfs_client
;
534 ret
= nfs4_do_handle_exception(server
, errorcode
, exception
);
535 if (exception
->delay
) {
536 rpc_delay(task
, nfs4_update_delay(&exception
->timeout
));
539 if (exception
->recovering
) {
540 rpc_sleep_on(&clp
->cl_rpcwaitq
, task
, NULL
);
541 if (test_bit(NFS4CLNT_MANAGER_RUNNING
, &clp
->cl_state
) == 0)
542 rpc_wake_up_queued_task(&clp
->cl_rpcwaitq
, task
);
545 if (test_bit(NFS_MIG_FAILED
, &server
->mig_status
))
550 exception
->retry
= 1;
555 nfs4_async_handle_error(struct rpc_task
*task
, struct nfs_server
*server
,
556 struct nfs4_state
*state
, long *timeout
)
558 struct nfs4_exception exception
= {
562 if (task
->tk_status
>= 0)
565 exception
.timeout
= *timeout
;
566 task
->tk_status
= nfs4_async_handle_exception(task
, server
,
569 if (exception
.delay
&& timeout
)
570 *timeout
= exception
.timeout
;
577 * Return 'true' if 'clp' is using an rpc_client that is integrity protected
578 * or 'false' otherwise.
580 static bool _nfs4_is_integrity_protected(struct nfs_client
*clp
)
582 rpc_authflavor_t flavor
= clp
->cl_rpcclient
->cl_auth
->au_flavor
;
583 return (flavor
== RPC_AUTH_GSS_KRB5I
) || (flavor
== RPC_AUTH_GSS_KRB5P
);
586 static void do_renew_lease(struct nfs_client
*clp
, unsigned long timestamp
)
588 spin_lock(&clp
->cl_lock
);
589 if (time_before(clp
->cl_last_renewal
,timestamp
))
590 clp
->cl_last_renewal
= timestamp
;
591 spin_unlock(&clp
->cl_lock
);
594 static void renew_lease(const struct nfs_server
*server
, unsigned long timestamp
)
596 struct nfs_client
*clp
= server
->nfs_client
;
598 if (!nfs4_has_session(clp
))
599 do_renew_lease(clp
, timestamp
);
602 struct nfs4_call_sync_data
{
603 const struct nfs_server
*seq_server
;
604 struct nfs4_sequence_args
*seq_args
;
605 struct nfs4_sequence_res
*seq_res
;
608 void nfs4_init_sequence(struct nfs4_sequence_args
*args
,
609 struct nfs4_sequence_res
*res
, int cache_reply
)
611 args
->sa_slot
= NULL
;
612 args
->sa_cache_this
= cache_reply
;
613 args
->sa_privileged
= 0;
618 static void nfs4_set_sequence_privileged(struct nfs4_sequence_args
*args
)
620 args
->sa_privileged
= 1;
623 static void nfs40_sequence_free_slot(struct nfs4_sequence_res
*res
)
625 struct nfs4_slot
*slot
= res
->sr_slot
;
626 struct nfs4_slot_table
*tbl
;
629 spin_lock(&tbl
->slot_tbl_lock
);
630 if (!nfs41_wake_and_assign_slot(tbl
, slot
))
631 nfs4_free_slot(tbl
, slot
);
632 spin_unlock(&tbl
->slot_tbl_lock
);
637 static int nfs40_sequence_done(struct rpc_task
*task
,
638 struct nfs4_sequence_res
*res
)
640 if (res
->sr_slot
!= NULL
)
641 nfs40_sequence_free_slot(res
);
645 #if defined(CONFIG_NFS_V4_1)
647 static void nfs41_sequence_free_slot(struct nfs4_sequence_res
*res
)
649 struct nfs4_session
*session
;
650 struct nfs4_slot_table
*tbl
;
651 struct nfs4_slot
*slot
= res
->sr_slot
;
652 bool send_new_highest_used_slotid
= false;
655 session
= tbl
->session
;
657 /* Bump the slot sequence number */
662 spin_lock(&tbl
->slot_tbl_lock
);
663 /* Be nice to the server: try to ensure that the last transmitted
664 * value for highest_user_slotid <= target_highest_slotid
666 if (tbl
->highest_used_slotid
> tbl
->target_highest_slotid
)
667 send_new_highest_used_slotid
= true;
669 if (nfs41_wake_and_assign_slot(tbl
, slot
)) {
670 send_new_highest_used_slotid
= false;
673 nfs4_free_slot(tbl
, slot
);
675 if (tbl
->highest_used_slotid
!= NFS4_NO_SLOT
)
676 send_new_highest_used_slotid
= false;
678 spin_unlock(&tbl
->slot_tbl_lock
);
680 if (send_new_highest_used_slotid
)
681 nfs41_notify_server(session
->clp
);
682 if (waitqueue_active(&tbl
->slot_waitq
))
683 wake_up_all(&tbl
->slot_waitq
);
686 static int nfs41_sequence_process(struct rpc_task
*task
,
687 struct nfs4_sequence_res
*res
)
689 struct nfs4_session
*session
;
690 struct nfs4_slot
*slot
= res
->sr_slot
;
691 struct nfs_client
*clp
;
692 bool interrupted
= false;
697 /* don't increment the sequence number if the task wasn't sent */
698 if (!RPC_WAS_SENT(task
))
701 session
= slot
->table
->session
;
703 if (slot
->interrupted
) {
704 if (res
->sr_status
!= -NFS4ERR_DELAY
)
705 slot
->interrupted
= 0;
709 trace_nfs4_sequence_done(session
, res
);
710 /* Check the SEQUENCE operation status */
711 switch (res
->sr_status
) {
713 /* If previous op on slot was interrupted and we reused
714 * the seq# and got a reply from the cache, then retry
716 if (task
->tk_status
== -EREMOTEIO
&& interrupted
) {
720 /* Update the slot's sequence and clientid lease timer */
723 do_renew_lease(clp
, res
->sr_timestamp
);
724 /* Check sequence flags */
725 nfs41_handle_sequence_flag_errors(clp
, res
->sr_status_flags
,
727 nfs41_update_target_slotid(slot
->table
, slot
, res
);
731 * sr_status remains 1 if an RPC level error occurred.
732 * The server may or may not have processed the sequence
734 * Mark the slot as having hosted an interrupted RPC call.
736 slot
->interrupted
= 1;
739 /* The server detected a resend of the RPC call and
740 * returned NFS4ERR_DELAY as per Section 2.10.6.2
743 dprintk("%s: slot=%u seq=%u: Operation in progress\n",
748 case -NFS4ERR_BADSLOT
:
750 * The slot id we used was probably retired. Try again
751 * using a different slot id.
754 case -NFS4ERR_SEQ_MISORDERED
:
756 * Was the last operation on this sequence interrupted?
757 * If so, retry after bumping the sequence number.
764 * Could this slot have been previously retired?
765 * If so, then the server may be expecting seq_nr = 1!
767 if (slot
->seq_nr
!= 1) {
772 case -NFS4ERR_SEQ_FALSE_RETRY
:
776 /* Just update the slot sequence no. */
780 /* The session may be reset by one of the error handlers. */
781 dprintk("%s: Error %d free the slot \n", __func__
, res
->sr_status
);
785 if (rpc_restart_call_prepare(task
)) {
786 nfs41_sequence_free_slot(res
);
792 if (!rpc_restart_call(task
))
794 rpc_delay(task
, NFS4_POLL_RETRY_MAX
);
798 int nfs41_sequence_done(struct rpc_task
*task
, struct nfs4_sequence_res
*res
)
800 if (!nfs41_sequence_process(task
, res
))
802 if (res
->sr_slot
!= NULL
)
803 nfs41_sequence_free_slot(res
);
807 EXPORT_SYMBOL_GPL(nfs41_sequence_done
);
809 static int nfs4_sequence_process(struct rpc_task
*task
, struct nfs4_sequence_res
*res
)
811 if (res
->sr_slot
== NULL
)
813 if (res
->sr_slot
->table
->session
!= NULL
)
814 return nfs41_sequence_process(task
, res
);
815 return nfs40_sequence_done(task
, res
);
818 static void nfs4_sequence_free_slot(struct nfs4_sequence_res
*res
)
820 if (res
->sr_slot
!= NULL
) {
821 if (res
->sr_slot
->table
->session
!= NULL
)
822 nfs41_sequence_free_slot(res
);
824 nfs40_sequence_free_slot(res
);
828 int nfs4_sequence_done(struct rpc_task
*task
, struct nfs4_sequence_res
*res
)
830 if (res
->sr_slot
== NULL
)
832 if (!res
->sr_slot
->table
->session
)
833 return nfs40_sequence_done(task
, res
);
834 return nfs41_sequence_done(task
, res
);
836 EXPORT_SYMBOL_GPL(nfs4_sequence_done
);
838 static void nfs41_call_sync_prepare(struct rpc_task
*task
, void *calldata
)
840 struct nfs4_call_sync_data
*data
= calldata
;
842 dprintk("--> %s data->seq_server %p\n", __func__
, data
->seq_server
);
844 nfs4_setup_sequence(data
->seq_server
->nfs_client
,
845 data
->seq_args
, data
->seq_res
, task
);
848 static void nfs41_call_sync_done(struct rpc_task
*task
, void *calldata
)
850 struct nfs4_call_sync_data
*data
= calldata
;
852 nfs41_sequence_done(task
, data
->seq_res
);
855 static const struct rpc_call_ops nfs41_call_sync_ops
= {
856 .rpc_call_prepare
= nfs41_call_sync_prepare
,
857 .rpc_call_done
= nfs41_call_sync_done
,
860 #else /* !CONFIG_NFS_V4_1 */
862 static int nfs4_sequence_process(struct rpc_task
*task
, struct nfs4_sequence_res
*res
)
864 return nfs40_sequence_done(task
, res
);
867 static void nfs4_sequence_free_slot(struct nfs4_sequence_res
*res
)
869 if (res
->sr_slot
!= NULL
)
870 nfs40_sequence_free_slot(res
);
873 int nfs4_sequence_done(struct rpc_task
*task
,
874 struct nfs4_sequence_res
*res
)
876 return nfs40_sequence_done(task
, res
);
878 EXPORT_SYMBOL_GPL(nfs4_sequence_done
);
880 #endif /* !CONFIG_NFS_V4_1 */
882 int nfs4_setup_sequence(const struct nfs_client
*client
,
883 struct nfs4_sequence_args
*args
,
884 struct nfs4_sequence_res
*res
,
885 struct rpc_task
*task
)
887 struct nfs4_session
*session
= nfs4_get_session(client
);
888 struct nfs4_slot_table
*tbl
= client
->cl_slot_tbl
;
889 struct nfs4_slot
*slot
;
891 /* slot already allocated? */
892 if (res
->sr_slot
!= NULL
)
896 tbl
= &session
->fc_slot_table
;
897 task
->tk_timeout
= 0;
900 spin_lock(&tbl
->slot_tbl_lock
);
901 /* The state manager will wait until the slot table is empty */
902 if (nfs4_slot_tbl_draining(tbl
) && !args
->sa_privileged
)
905 slot
= nfs4_alloc_slot(tbl
);
907 /* Try again in 1/4 second */
908 if (slot
== ERR_PTR(-ENOMEM
))
909 task
->tk_timeout
= HZ
>> 2;
912 spin_unlock(&tbl
->slot_tbl_lock
);
914 slot
->privileged
= args
->sa_privileged
? 1 : 0;
915 args
->sa_slot
= slot
;
919 res
->sr_timestamp
= jiffies
;
920 res
->sr_status_flags
= 0;
924 trace_nfs4_setup_sequence(session
, args
);
926 rpc_call_start(task
);
930 if (args
->sa_privileged
)
931 rpc_sleep_on_priority(&tbl
->slot_tbl_waitq
, task
,
932 NULL
, RPC_PRIORITY_PRIVILEGED
);
934 rpc_sleep_on(&tbl
->slot_tbl_waitq
, task
, NULL
);
935 spin_unlock(&tbl
->slot_tbl_lock
);
938 EXPORT_SYMBOL_GPL(nfs4_setup_sequence
);
940 static void nfs40_call_sync_prepare(struct rpc_task
*task
, void *calldata
)
942 struct nfs4_call_sync_data
*data
= calldata
;
943 nfs4_setup_sequence(data
->seq_server
->nfs_client
,
944 data
->seq_args
, data
->seq_res
, task
);
947 static void nfs40_call_sync_done(struct rpc_task
*task
, void *calldata
)
949 struct nfs4_call_sync_data
*data
= calldata
;
950 nfs4_sequence_done(task
, data
->seq_res
);
953 static const struct rpc_call_ops nfs40_call_sync_ops
= {
954 .rpc_call_prepare
= nfs40_call_sync_prepare
,
955 .rpc_call_done
= nfs40_call_sync_done
,
958 static int nfs4_call_sync_sequence(struct rpc_clnt
*clnt
,
959 struct nfs_server
*server
,
960 struct rpc_message
*msg
,
961 struct nfs4_sequence_args
*args
,
962 struct nfs4_sequence_res
*res
)
965 struct rpc_task
*task
;
966 struct nfs_client
*clp
= server
->nfs_client
;
967 struct nfs4_call_sync_data data
= {
968 .seq_server
= server
,
972 struct rpc_task_setup task_setup
= {
975 .callback_ops
= clp
->cl_mvops
->call_sync_ops
,
976 .callback_data
= &data
979 task
= rpc_run_task(&task_setup
);
983 ret
= task
->tk_status
;
989 int nfs4_call_sync(struct rpc_clnt
*clnt
,
990 struct nfs_server
*server
,
991 struct rpc_message
*msg
,
992 struct nfs4_sequence_args
*args
,
993 struct nfs4_sequence_res
*res
,
996 nfs4_init_sequence(args
, res
, cache_reply
);
997 return nfs4_call_sync_sequence(clnt
, server
, msg
, args
, res
);
1000 static void update_changeattr(struct inode
*dir
, struct nfs4_change_info
*cinfo
,
1001 unsigned long timestamp
)
1003 struct nfs_inode
*nfsi
= NFS_I(dir
);
1005 spin_lock(&dir
->i_lock
);
1006 nfsi
->cache_validity
|= NFS_INO_INVALID_ATTR
|NFS_INO_INVALID_DATA
;
1007 if (cinfo
->atomic
&& cinfo
->before
== dir
->i_version
) {
1008 nfsi
->cache_validity
&= ~NFS_INO_REVAL_PAGECACHE
;
1009 nfsi
->attrtimeo_timestamp
= jiffies
;
1011 nfs_force_lookup_revalidate(dir
);
1012 if (cinfo
->before
!= dir
->i_version
)
1013 nfsi
->cache_validity
|= NFS_INO_INVALID_ACCESS
|
1014 NFS_INO_INVALID_ACL
;
1016 dir
->i_version
= cinfo
->after
;
1017 nfsi
->read_cache_jiffies
= timestamp
;
1018 nfsi
->attr_gencount
= nfs_inc_attr_generation_counter();
1019 nfs_fscache_invalidate(dir
);
1020 spin_unlock(&dir
->i_lock
);
1023 struct nfs4_opendata
{
1025 struct nfs_openargs o_arg
;
1026 struct nfs_openres o_res
;
1027 struct nfs_open_confirmargs c_arg
;
1028 struct nfs_open_confirmres c_res
;
1029 struct nfs4_string owner_name
;
1030 struct nfs4_string group_name
;
1031 struct nfs4_label
*a_label
;
1032 struct nfs_fattr f_attr
;
1033 struct nfs4_label
*f_label
;
1035 struct dentry
*dentry
;
1036 struct nfs4_state_owner
*owner
;
1037 struct nfs4_state
*state
;
1039 unsigned long timestamp
;
1040 unsigned int rpc_done
: 1;
1041 unsigned int file_created
: 1;
1042 unsigned int is_recover
: 1;
1047 static bool nfs4_clear_cap_atomic_open_v1(struct nfs_server
*server
,
1048 int err
, struct nfs4_exception
*exception
)
1052 if (!(server
->caps
& NFS_CAP_ATOMIC_OPEN_V1
))
1054 server
->caps
&= ~NFS_CAP_ATOMIC_OPEN_V1
;
1055 exception
->retry
= 1;
1060 nfs4_map_atomic_open_share(struct nfs_server
*server
,
1061 fmode_t fmode
, int openflags
)
1065 switch (fmode
& (FMODE_READ
| FMODE_WRITE
)) {
1067 res
= NFS4_SHARE_ACCESS_READ
;
1070 res
= NFS4_SHARE_ACCESS_WRITE
;
1072 case FMODE_READ
|FMODE_WRITE
:
1073 res
= NFS4_SHARE_ACCESS_BOTH
;
1075 if (!(server
->caps
& NFS_CAP_ATOMIC_OPEN_V1
))
1077 /* Want no delegation if we're using O_DIRECT */
1078 if (openflags
& O_DIRECT
)
1079 res
|= NFS4_SHARE_WANT_NO_DELEG
;
1084 static enum open_claim_type4
1085 nfs4_map_atomic_open_claim(struct nfs_server
*server
,
1086 enum open_claim_type4 claim
)
1088 if (server
->caps
& NFS_CAP_ATOMIC_OPEN_V1
)
1093 case NFS4_OPEN_CLAIM_FH
:
1094 return NFS4_OPEN_CLAIM_NULL
;
1095 case NFS4_OPEN_CLAIM_DELEG_CUR_FH
:
1096 return NFS4_OPEN_CLAIM_DELEGATE_CUR
;
1097 case NFS4_OPEN_CLAIM_DELEG_PREV_FH
:
1098 return NFS4_OPEN_CLAIM_DELEGATE_PREV
;
1102 static void nfs4_init_opendata_res(struct nfs4_opendata
*p
)
1104 p
->o_res
.f_attr
= &p
->f_attr
;
1105 p
->o_res
.f_label
= p
->f_label
;
1106 p
->o_res
.seqid
= p
->o_arg
.seqid
;
1107 p
->c_res
.seqid
= p
->c_arg
.seqid
;
1108 p
->o_res
.server
= p
->o_arg
.server
;
1109 p
->o_res
.access_request
= p
->o_arg
.access
;
1110 nfs_fattr_init(&p
->f_attr
);
1111 nfs_fattr_init_names(&p
->f_attr
, &p
->owner_name
, &p
->group_name
);
1114 static struct nfs4_opendata
*nfs4_opendata_alloc(struct dentry
*dentry
,
1115 struct nfs4_state_owner
*sp
, fmode_t fmode
, int flags
,
1116 const struct iattr
*attrs
,
1117 struct nfs4_label
*label
,
1118 enum open_claim_type4 claim
,
1121 struct dentry
*parent
= dget_parent(dentry
);
1122 struct inode
*dir
= d_inode(parent
);
1123 struct nfs_server
*server
= NFS_SERVER(dir
);
1124 struct nfs_seqid
*(*alloc_seqid
)(struct nfs_seqid_counter
*, gfp_t
);
1125 struct nfs4_opendata
*p
;
1127 p
= kzalloc(sizeof(*p
), gfp_mask
);
1131 p
->f_label
= nfs4_label_alloc(server
, gfp_mask
);
1132 if (IS_ERR(p
->f_label
))
1135 p
->a_label
= nfs4_label_alloc(server
, gfp_mask
);
1136 if (IS_ERR(p
->a_label
))
1139 alloc_seqid
= server
->nfs_client
->cl_mvops
->alloc_seqid
;
1140 p
->o_arg
.seqid
= alloc_seqid(&sp
->so_seqid
, gfp_mask
);
1141 if (IS_ERR(p
->o_arg
.seqid
))
1142 goto err_free_label
;
1143 nfs_sb_active(dentry
->d_sb
);
1144 p
->dentry
= dget(dentry
);
1147 atomic_inc(&sp
->so_count
);
1148 p
->o_arg
.open_flags
= flags
;
1149 p
->o_arg
.fmode
= fmode
& (FMODE_READ
|FMODE_WRITE
);
1150 p
->o_arg
.umask
= current_umask();
1151 p
->o_arg
.claim
= nfs4_map_atomic_open_claim(server
, claim
);
1152 p
->o_arg
.share_access
= nfs4_map_atomic_open_share(server
,
1154 /* don't put an ACCESS op in OPEN compound if O_EXCL, because ACCESS
1155 * will return permission denied for all bits until close */
1156 if (!(flags
& O_EXCL
)) {
1157 /* ask server to check for all possible rights as results
1159 switch (p
->o_arg
.claim
) {
1162 case NFS4_OPEN_CLAIM_NULL
:
1163 case NFS4_OPEN_CLAIM_FH
:
1164 p
->o_arg
.access
= NFS4_ACCESS_READ
|
1165 NFS4_ACCESS_MODIFY
|
1166 NFS4_ACCESS_EXTEND
|
1167 NFS4_ACCESS_EXECUTE
;
1170 p
->o_arg
.clientid
= server
->nfs_client
->cl_clientid
;
1171 p
->o_arg
.id
.create_time
= ktime_to_ns(sp
->so_seqid
.create_time
);
1172 p
->o_arg
.id
.uniquifier
= sp
->so_seqid
.owner_id
;
1173 p
->o_arg
.name
= &dentry
->d_name
;
1174 p
->o_arg
.server
= server
;
1175 p
->o_arg
.bitmask
= nfs4_bitmask(server
, label
);
1176 p
->o_arg
.open_bitmap
= &nfs4_fattr_bitmap
[0];
1177 p
->o_arg
.label
= nfs4_label_copy(p
->a_label
, label
);
1178 switch (p
->o_arg
.claim
) {
1179 case NFS4_OPEN_CLAIM_NULL
:
1180 case NFS4_OPEN_CLAIM_DELEGATE_CUR
:
1181 case NFS4_OPEN_CLAIM_DELEGATE_PREV
:
1182 p
->o_arg
.fh
= NFS_FH(dir
);
1184 case NFS4_OPEN_CLAIM_PREVIOUS
:
1185 case NFS4_OPEN_CLAIM_FH
:
1186 case NFS4_OPEN_CLAIM_DELEG_CUR_FH
:
1187 case NFS4_OPEN_CLAIM_DELEG_PREV_FH
:
1188 p
->o_arg
.fh
= NFS_FH(d_inode(dentry
));
1190 if (attrs
!= NULL
&& attrs
->ia_valid
!= 0) {
1193 p
->o_arg
.u
.attrs
= &p
->attrs
;
1194 memcpy(&p
->attrs
, attrs
, sizeof(p
->attrs
));
1197 verf
[1] = current
->pid
;
1198 memcpy(p
->o_arg
.u
.verifier
.data
, verf
,
1199 sizeof(p
->o_arg
.u
.verifier
.data
));
1201 p
->c_arg
.fh
= &p
->o_res
.fh
;
1202 p
->c_arg
.stateid
= &p
->o_res
.stateid
;
1203 p
->c_arg
.seqid
= p
->o_arg
.seqid
;
1204 nfs4_init_opendata_res(p
);
1205 kref_init(&p
->kref
);
1209 nfs4_label_free(p
->a_label
);
1211 nfs4_label_free(p
->f_label
);
1219 static void nfs4_opendata_free(struct kref
*kref
)
1221 struct nfs4_opendata
*p
= container_of(kref
,
1222 struct nfs4_opendata
, kref
);
1223 struct super_block
*sb
= p
->dentry
->d_sb
;
1225 nfs_free_seqid(p
->o_arg
.seqid
);
1226 nfs4_sequence_free_slot(&p
->o_res
.seq_res
);
1227 if (p
->state
!= NULL
)
1228 nfs4_put_open_state(p
->state
);
1229 nfs4_put_state_owner(p
->owner
);
1231 nfs4_label_free(p
->a_label
);
1232 nfs4_label_free(p
->f_label
);
1236 nfs_sb_deactive(sb
);
1237 nfs_fattr_free_names(&p
->f_attr
);
1238 kfree(p
->f_attr
.mdsthreshold
);
1242 static void nfs4_opendata_put(struct nfs4_opendata
*p
)
1245 kref_put(&p
->kref
, nfs4_opendata_free
);
1248 static bool nfs4_mode_match_open_stateid(struct nfs4_state
*state
,
1251 switch(fmode
& (FMODE_READ
|FMODE_WRITE
)) {
1252 case FMODE_READ
|FMODE_WRITE
:
1253 return state
->n_rdwr
!= 0;
1255 return state
->n_wronly
!= 0;
1257 return state
->n_rdonly
!= 0;
1263 static int can_open_cached(struct nfs4_state
*state
, fmode_t mode
, int open_mode
)
1267 if (open_mode
& (O_EXCL
|O_TRUNC
))
1269 switch (mode
& (FMODE_READ
|FMODE_WRITE
)) {
1271 ret
|= test_bit(NFS_O_RDONLY_STATE
, &state
->flags
) != 0
1272 && state
->n_rdonly
!= 0;
1275 ret
|= test_bit(NFS_O_WRONLY_STATE
, &state
->flags
) != 0
1276 && state
->n_wronly
!= 0;
1278 case FMODE_READ
|FMODE_WRITE
:
1279 ret
|= test_bit(NFS_O_RDWR_STATE
, &state
->flags
) != 0
1280 && state
->n_rdwr
!= 0;
1286 static int can_open_delegated(struct nfs_delegation
*delegation
, fmode_t fmode
,
1287 enum open_claim_type4 claim
)
1289 if (delegation
== NULL
)
1291 if ((delegation
->type
& fmode
) != fmode
)
1293 if (test_bit(NFS_DELEGATION_RETURNING
, &delegation
->flags
))
1296 case NFS4_OPEN_CLAIM_NULL
:
1297 case NFS4_OPEN_CLAIM_FH
:
1299 case NFS4_OPEN_CLAIM_PREVIOUS
:
1300 if (!test_bit(NFS_DELEGATION_NEED_RECLAIM
, &delegation
->flags
))
1305 nfs_mark_delegation_referenced(delegation
);
1309 static void update_open_stateflags(struct nfs4_state
*state
, fmode_t fmode
)
1318 case FMODE_READ
|FMODE_WRITE
:
1321 nfs4_state_set_mode_locked(state
, state
->state
| fmode
);
1324 #ifdef CONFIG_NFS_V4_1
1325 static bool nfs_open_stateid_recover_openmode(struct nfs4_state
*state
)
1327 if (state
->n_rdonly
&& !test_bit(NFS_O_RDONLY_STATE
, &state
->flags
))
1329 if (state
->n_wronly
&& !test_bit(NFS_O_WRONLY_STATE
, &state
->flags
))
1331 if (state
->n_rdwr
&& !test_bit(NFS_O_RDWR_STATE
, &state
->flags
))
1335 #endif /* CONFIG_NFS_V4_1 */
1337 static void nfs_test_and_clear_all_open_stateid(struct nfs4_state
*state
)
1339 struct nfs_client
*clp
= state
->owner
->so_server
->nfs_client
;
1340 bool need_recover
= false;
1342 if (test_and_clear_bit(NFS_O_RDONLY_STATE
, &state
->flags
) && state
->n_rdonly
)
1343 need_recover
= true;
1344 if (test_and_clear_bit(NFS_O_WRONLY_STATE
, &state
->flags
) && state
->n_wronly
)
1345 need_recover
= true;
1346 if (test_and_clear_bit(NFS_O_RDWR_STATE
, &state
->flags
) && state
->n_rdwr
)
1347 need_recover
= true;
1349 nfs4_state_mark_reclaim_nograce(clp
, state
);
1352 static bool nfs_need_update_open_stateid(struct nfs4_state
*state
,
1353 const nfs4_stateid
*stateid
, nfs4_stateid
*freeme
)
1355 if (test_and_set_bit(NFS_OPEN_STATE
, &state
->flags
) == 0)
1357 if (!nfs4_stateid_match_other(stateid
, &state
->open_stateid
)) {
1358 nfs4_stateid_copy(freeme
, &state
->open_stateid
);
1359 nfs_test_and_clear_all_open_stateid(state
);
1362 if (nfs4_stateid_is_newer(stateid
, &state
->open_stateid
))
1367 static void nfs_resync_open_stateid_locked(struct nfs4_state
*state
)
1369 if (!(state
->n_wronly
|| state
->n_rdonly
|| state
->n_rdwr
))
1371 if (state
->n_wronly
)
1372 set_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
1373 if (state
->n_rdonly
)
1374 set_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
1376 set_bit(NFS_O_RDWR_STATE
, &state
->flags
);
1377 set_bit(NFS_OPEN_STATE
, &state
->flags
);
1380 static void nfs_clear_open_stateid_locked(struct nfs4_state
*state
,
1381 nfs4_stateid
*stateid
, fmode_t fmode
)
1383 clear_bit(NFS_O_RDWR_STATE
, &state
->flags
);
1384 switch (fmode
& (FMODE_READ
|FMODE_WRITE
)) {
1386 clear_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
1389 clear_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
1392 clear_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
1393 clear_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
1394 clear_bit(NFS_OPEN_STATE
, &state
->flags
);
1396 if (stateid
== NULL
)
1398 /* Handle OPEN+OPEN_DOWNGRADE races */
1399 if (nfs4_stateid_match_other(stateid
, &state
->open_stateid
) &&
1400 !nfs4_stateid_is_newer(stateid
, &state
->open_stateid
)) {
1401 nfs_resync_open_stateid_locked(state
);
1404 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) == 0)
1405 nfs4_stateid_copy(&state
->stateid
, stateid
);
1406 nfs4_stateid_copy(&state
->open_stateid
, stateid
);
1409 static void nfs_clear_open_stateid(struct nfs4_state
*state
,
1410 nfs4_stateid
*arg_stateid
,
1411 nfs4_stateid
*stateid
, fmode_t fmode
)
1413 write_seqlock(&state
->seqlock
);
1414 /* Ignore, if the CLOSE argment doesn't match the current stateid */
1415 if (nfs4_state_match_open_stateid_other(state
, arg_stateid
))
1416 nfs_clear_open_stateid_locked(state
, stateid
, fmode
);
1417 write_sequnlock(&state
->seqlock
);
1418 if (test_bit(NFS_STATE_RECLAIM_NOGRACE
, &state
->flags
))
1419 nfs4_schedule_state_manager(state
->owner
->so_server
->nfs_client
);
1422 static void nfs_set_open_stateid_locked(struct nfs4_state
*state
,
1423 const nfs4_stateid
*stateid
, fmode_t fmode
,
1424 nfs4_stateid
*freeme
)
1428 set_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
1431 set_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
1433 case FMODE_READ
|FMODE_WRITE
:
1434 set_bit(NFS_O_RDWR_STATE
, &state
->flags
);
1436 if (!nfs_need_update_open_stateid(state
, stateid
, freeme
))
1438 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) == 0)
1439 nfs4_stateid_copy(&state
->stateid
, stateid
);
1440 nfs4_stateid_copy(&state
->open_stateid
, stateid
);
1443 static void __update_open_stateid(struct nfs4_state
*state
,
1444 const nfs4_stateid
*open_stateid
,
1445 const nfs4_stateid
*deleg_stateid
,
1447 nfs4_stateid
*freeme
)
1450 * Protect the call to nfs4_state_set_mode_locked and
1451 * serialise the stateid update
1453 spin_lock(&state
->owner
->so_lock
);
1454 write_seqlock(&state
->seqlock
);
1455 if (deleg_stateid
!= NULL
) {
1456 nfs4_stateid_copy(&state
->stateid
, deleg_stateid
);
1457 set_bit(NFS_DELEGATED_STATE
, &state
->flags
);
1459 if (open_stateid
!= NULL
)
1460 nfs_set_open_stateid_locked(state
, open_stateid
, fmode
, freeme
);
1461 write_sequnlock(&state
->seqlock
);
1462 update_open_stateflags(state
, fmode
);
1463 spin_unlock(&state
->owner
->so_lock
);
1466 static int update_open_stateid(struct nfs4_state
*state
,
1467 const nfs4_stateid
*open_stateid
,
1468 const nfs4_stateid
*delegation
,
1471 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
1472 struct nfs_client
*clp
= server
->nfs_client
;
1473 struct nfs_inode
*nfsi
= NFS_I(state
->inode
);
1474 struct nfs_delegation
*deleg_cur
;
1475 nfs4_stateid freeme
= { };
1478 fmode
&= (FMODE_READ
|FMODE_WRITE
);
1481 deleg_cur
= rcu_dereference(nfsi
->delegation
);
1482 if (deleg_cur
== NULL
)
1485 spin_lock(&deleg_cur
->lock
);
1486 if (rcu_dereference(nfsi
->delegation
) != deleg_cur
||
1487 test_bit(NFS_DELEGATION_RETURNING
, &deleg_cur
->flags
) ||
1488 (deleg_cur
->type
& fmode
) != fmode
)
1489 goto no_delegation_unlock
;
1491 if (delegation
== NULL
)
1492 delegation
= &deleg_cur
->stateid
;
1493 else if (!nfs4_stateid_match(&deleg_cur
->stateid
, delegation
))
1494 goto no_delegation_unlock
;
1496 nfs_mark_delegation_referenced(deleg_cur
);
1497 __update_open_stateid(state
, open_stateid
, &deleg_cur
->stateid
,
1500 no_delegation_unlock
:
1501 spin_unlock(&deleg_cur
->lock
);
1505 if (!ret
&& open_stateid
!= NULL
) {
1506 __update_open_stateid(state
, open_stateid
, NULL
, fmode
, &freeme
);
1509 if (test_bit(NFS_STATE_RECLAIM_NOGRACE
, &state
->flags
))
1510 nfs4_schedule_state_manager(clp
);
1511 if (freeme
.type
!= 0)
1512 nfs4_test_and_free_stateid(server
, &freeme
,
1513 state
->owner
->so_cred
);
1518 static bool nfs4_update_lock_stateid(struct nfs4_lock_state
*lsp
,
1519 const nfs4_stateid
*stateid
)
1521 struct nfs4_state
*state
= lsp
->ls_state
;
1524 spin_lock(&state
->state_lock
);
1525 if (!nfs4_stateid_match_other(stateid
, &lsp
->ls_stateid
))
1527 if (!nfs4_stateid_is_newer(stateid
, &lsp
->ls_stateid
))
1529 nfs4_stateid_copy(&lsp
->ls_stateid
, stateid
);
1532 spin_unlock(&state
->state_lock
);
1536 static void nfs4_return_incompatible_delegation(struct inode
*inode
, fmode_t fmode
)
1538 struct nfs_delegation
*delegation
;
1541 delegation
= rcu_dereference(NFS_I(inode
)->delegation
);
1542 if (delegation
== NULL
|| (delegation
->type
& fmode
) == fmode
) {
1547 nfs4_inode_return_delegation(inode
);
1550 static struct nfs4_state
*nfs4_try_open_cached(struct nfs4_opendata
*opendata
)
1552 struct nfs4_state
*state
= opendata
->state
;
1553 struct nfs_inode
*nfsi
= NFS_I(state
->inode
);
1554 struct nfs_delegation
*delegation
;
1555 int open_mode
= opendata
->o_arg
.open_flags
;
1556 fmode_t fmode
= opendata
->o_arg
.fmode
;
1557 enum open_claim_type4 claim
= opendata
->o_arg
.claim
;
1558 nfs4_stateid stateid
;
1562 spin_lock(&state
->owner
->so_lock
);
1563 if (can_open_cached(state
, fmode
, open_mode
)) {
1564 update_open_stateflags(state
, fmode
);
1565 spin_unlock(&state
->owner
->so_lock
);
1566 goto out_return_state
;
1568 spin_unlock(&state
->owner
->so_lock
);
1570 delegation
= rcu_dereference(nfsi
->delegation
);
1571 if (!can_open_delegated(delegation
, fmode
, claim
)) {
1575 /* Save the delegation */
1576 nfs4_stateid_copy(&stateid
, &delegation
->stateid
);
1578 nfs_release_seqid(opendata
->o_arg
.seqid
);
1579 if (!opendata
->is_recover
) {
1580 ret
= nfs_may_open(state
->inode
, state
->owner
->so_cred
, open_mode
);
1586 /* Try to update the stateid using the delegation */
1587 if (update_open_stateid(state
, NULL
, &stateid
, fmode
))
1588 goto out_return_state
;
1591 return ERR_PTR(ret
);
1593 atomic_inc(&state
->count
);
1598 nfs4_opendata_check_deleg(struct nfs4_opendata
*data
, struct nfs4_state
*state
)
1600 struct nfs_client
*clp
= NFS_SERVER(state
->inode
)->nfs_client
;
1601 struct nfs_delegation
*delegation
;
1602 int delegation_flags
= 0;
1605 delegation
= rcu_dereference(NFS_I(state
->inode
)->delegation
);
1607 delegation_flags
= delegation
->flags
;
1609 switch (data
->o_arg
.claim
) {
1612 case NFS4_OPEN_CLAIM_DELEGATE_CUR
:
1613 case NFS4_OPEN_CLAIM_DELEG_CUR_FH
:
1614 pr_err_ratelimited("NFS: Broken NFSv4 server %s is "
1615 "returning a delegation for "
1616 "OPEN(CLAIM_DELEGATE_CUR)\n",
1620 if ((delegation_flags
& 1UL<<NFS_DELEGATION_NEED_RECLAIM
) == 0)
1621 nfs_inode_set_delegation(state
->inode
,
1622 data
->owner
->so_cred
,
1625 nfs_inode_reclaim_delegation(state
->inode
,
1626 data
->owner
->so_cred
,
1631 * Check the inode attributes against the CLAIM_PREVIOUS returned attributes
1632 * and update the nfs4_state.
1634 static struct nfs4_state
*
1635 _nfs4_opendata_reclaim_to_nfs4_state(struct nfs4_opendata
*data
)
1637 struct inode
*inode
= data
->state
->inode
;
1638 struct nfs4_state
*state
= data
->state
;
1641 if (!data
->rpc_done
) {
1642 if (data
->rpc_status
)
1643 return ERR_PTR(data
->rpc_status
);
1644 /* cached opens have already been processed */
1648 ret
= nfs_refresh_inode(inode
, &data
->f_attr
);
1650 return ERR_PTR(ret
);
1652 if (data
->o_res
.delegation_type
!= 0)
1653 nfs4_opendata_check_deleg(data
, state
);
1655 update_open_stateid(state
, &data
->o_res
.stateid
, NULL
,
1657 atomic_inc(&state
->count
);
1662 static struct nfs4_state
*
1663 _nfs4_opendata_to_nfs4_state(struct nfs4_opendata
*data
)
1665 struct inode
*inode
;
1666 struct nfs4_state
*state
= NULL
;
1669 if (!data
->rpc_done
) {
1670 state
= nfs4_try_open_cached(data
);
1671 trace_nfs4_cached_open(data
->state
);
1676 if (!(data
->f_attr
.valid
& NFS_ATTR_FATTR
))
1678 inode
= nfs_fhget(data
->dir
->d_sb
, &data
->o_res
.fh
, &data
->f_attr
, data
->f_label
);
1679 ret
= PTR_ERR(inode
);
1683 state
= nfs4_get_open_state(inode
, data
->owner
);
1686 if (data
->o_res
.delegation_type
!= 0)
1687 nfs4_opendata_check_deleg(data
, state
);
1688 update_open_stateid(state
, &data
->o_res
.stateid
, NULL
,
1692 nfs_release_seqid(data
->o_arg
.seqid
);
1697 return ERR_PTR(ret
);
1700 static struct nfs4_state
*
1701 nfs4_opendata_to_nfs4_state(struct nfs4_opendata
*data
)
1703 struct nfs4_state
*ret
;
1705 if (data
->o_arg
.claim
== NFS4_OPEN_CLAIM_PREVIOUS
)
1706 ret
=_nfs4_opendata_reclaim_to_nfs4_state(data
);
1708 ret
= _nfs4_opendata_to_nfs4_state(data
);
1709 nfs4_sequence_free_slot(&data
->o_res
.seq_res
);
1713 static struct nfs_open_context
*nfs4_state_find_open_context(struct nfs4_state
*state
)
1715 struct nfs_inode
*nfsi
= NFS_I(state
->inode
);
1716 struct nfs_open_context
*ctx
;
1718 spin_lock(&state
->inode
->i_lock
);
1719 list_for_each_entry(ctx
, &nfsi
->open_files
, list
) {
1720 if (ctx
->state
!= state
)
1722 get_nfs_open_context(ctx
);
1723 spin_unlock(&state
->inode
->i_lock
);
1726 spin_unlock(&state
->inode
->i_lock
);
1727 return ERR_PTR(-ENOENT
);
1730 static struct nfs4_opendata
*nfs4_open_recoverdata_alloc(struct nfs_open_context
*ctx
,
1731 struct nfs4_state
*state
, enum open_claim_type4 claim
)
1733 struct nfs4_opendata
*opendata
;
1735 opendata
= nfs4_opendata_alloc(ctx
->dentry
, state
->owner
, 0, 0,
1736 NULL
, NULL
, claim
, GFP_NOFS
);
1737 if (opendata
== NULL
)
1738 return ERR_PTR(-ENOMEM
);
1739 opendata
->state
= state
;
1740 atomic_inc(&state
->count
);
1744 static int nfs4_open_recover_helper(struct nfs4_opendata
*opendata
,
1747 struct nfs4_state
*newstate
;
1750 if (!nfs4_mode_match_open_stateid(opendata
->state
, fmode
))
1752 opendata
->o_arg
.open_flags
= 0;
1753 opendata
->o_arg
.fmode
= fmode
;
1754 opendata
->o_arg
.share_access
= nfs4_map_atomic_open_share(
1755 NFS_SB(opendata
->dentry
->d_sb
),
1757 memset(&opendata
->o_res
, 0, sizeof(opendata
->o_res
));
1758 memset(&opendata
->c_res
, 0, sizeof(opendata
->c_res
));
1759 nfs4_init_opendata_res(opendata
);
1760 ret
= _nfs4_recover_proc_open(opendata
);
1763 newstate
= nfs4_opendata_to_nfs4_state(opendata
);
1764 if (IS_ERR(newstate
))
1765 return PTR_ERR(newstate
);
1766 if (newstate
!= opendata
->state
)
1768 nfs4_close_state(newstate
, fmode
);
1772 static int nfs4_open_recover(struct nfs4_opendata
*opendata
, struct nfs4_state
*state
)
1776 /* Don't trigger recovery in nfs_test_and_clear_all_open_stateid */
1777 clear_bit(NFS_O_RDWR_STATE
, &state
->flags
);
1778 clear_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
1779 clear_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
1780 /* memory barrier prior to reading state->n_* */
1781 clear_bit(NFS_DELEGATED_STATE
, &state
->flags
);
1782 clear_bit(NFS_OPEN_STATE
, &state
->flags
);
1784 ret
= nfs4_open_recover_helper(opendata
, FMODE_READ
|FMODE_WRITE
);
1787 ret
= nfs4_open_recover_helper(opendata
, FMODE_WRITE
);
1790 ret
= nfs4_open_recover_helper(opendata
, FMODE_READ
);
1794 * We may have performed cached opens for all three recoveries.
1795 * Check if we need to update the current stateid.
1797 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) == 0 &&
1798 !nfs4_stateid_match(&state
->stateid
, &state
->open_stateid
)) {
1799 write_seqlock(&state
->seqlock
);
1800 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) == 0)
1801 nfs4_stateid_copy(&state
->stateid
, &state
->open_stateid
);
1802 write_sequnlock(&state
->seqlock
);
1809 * reclaim state on the server after a reboot.
1811 static int _nfs4_do_open_reclaim(struct nfs_open_context
*ctx
, struct nfs4_state
*state
)
1813 struct nfs_delegation
*delegation
;
1814 struct nfs4_opendata
*opendata
;
1815 fmode_t delegation_type
= 0;
1818 opendata
= nfs4_open_recoverdata_alloc(ctx
, state
,
1819 NFS4_OPEN_CLAIM_PREVIOUS
);
1820 if (IS_ERR(opendata
))
1821 return PTR_ERR(opendata
);
1823 delegation
= rcu_dereference(NFS_I(state
->inode
)->delegation
);
1824 if (delegation
!= NULL
&& test_bit(NFS_DELEGATION_NEED_RECLAIM
, &delegation
->flags
) != 0)
1825 delegation_type
= delegation
->type
;
1827 opendata
->o_arg
.u
.delegation_type
= delegation_type
;
1828 status
= nfs4_open_recover(opendata
, state
);
1829 nfs4_opendata_put(opendata
);
1833 static int nfs4_do_open_reclaim(struct nfs_open_context
*ctx
, struct nfs4_state
*state
)
1835 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
1836 struct nfs4_exception exception
= { };
1839 err
= _nfs4_do_open_reclaim(ctx
, state
);
1840 trace_nfs4_open_reclaim(ctx
, 0, err
);
1841 if (nfs4_clear_cap_atomic_open_v1(server
, err
, &exception
))
1843 if (err
!= -NFS4ERR_DELAY
)
1845 nfs4_handle_exception(server
, err
, &exception
);
1846 } while (exception
.retry
);
1850 static int nfs4_open_reclaim(struct nfs4_state_owner
*sp
, struct nfs4_state
*state
)
1852 struct nfs_open_context
*ctx
;
1855 ctx
= nfs4_state_find_open_context(state
);
1858 ret
= nfs4_do_open_reclaim(ctx
, state
);
1859 put_nfs_open_context(ctx
);
1863 static int nfs4_handle_delegation_recall_error(struct nfs_server
*server
, struct nfs4_state
*state
, const nfs4_stateid
*stateid
, int err
)
1867 printk(KERN_ERR
"NFS: %s: unhandled error "
1868 "%d.\n", __func__
, err
);
1874 case -NFS4ERR_BADSESSION
:
1875 case -NFS4ERR_BADSLOT
:
1876 case -NFS4ERR_BAD_HIGH_SLOT
:
1877 case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION
:
1878 case -NFS4ERR_DEADSESSION
:
1879 set_bit(NFS_DELEGATED_STATE
, &state
->flags
);
1880 nfs4_schedule_session_recovery(server
->nfs_client
->cl_session
, err
);
1882 case -NFS4ERR_STALE_CLIENTID
:
1883 case -NFS4ERR_STALE_STATEID
:
1884 set_bit(NFS_DELEGATED_STATE
, &state
->flags
);
1885 /* Don't recall a delegation if it was lost */
1886 nfs4_schedule_lease_recovery(server
->nfs_client
);
1888 case -NFS4ERR_MOVED
:
1889 nfs4_schedule_migration_recovery(server
);
1891 case -NFS4ERR_LEASE_MOVED
:
1892 nfs4_schedule_lease_moved_recovery(server
->nfs_client
);
1894 case -NFS4ERR_DELEG_REVOKED
:
1895 case -NFS4ERR_ADMIN_REVOKED
:
1896 case -NFS4ERR_EXPIRED
:
1897 case -NFS4ERR_BAD_STATEID
:
1898 case -NFS4ERR_OPENMODE
:
1899 nfs_inode_find_state_and_recover(state
->inode
,
1901 nfs4_schedule_stateid_recovery(server
, state
);
1903 case -NFS4ERR_DELAY
:
1904 case -NFS4ERR_GRACE
:
1905 set_bit(NFS_DELEGATED_STATE
, &state
->flags
);
1909 case -NFS4ERR_DENIED
:
1910 /* kill_proc(fl->fl_pid, SIGLOST, 1); */
1916 int nfs4_open_delegation_recall(struct nfs_open_context
*ctx
,
1917 struct nfs4_state
*state
, const nfs4_stateid
*stateid
,
1920 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
1921 struct nfs4_opendata
*opendata
;
1924 opendata
= nfs4_open_recoverdata_alloc(ctx
, state
,
1925 NFS4_OPEN_CLAIM_DELEG_CUR_FH
);
1926 if (IS_ERR(opendata
))
1927 return PTR_ERR(opendata
);
1928 nfs4_stateid_copy(&opendata
->o_arg
.u
.delegation
, stateid
);
1929 write_seqlock(&state
->seqlock
);
1930 nfs4_stateid_copy(&state
->stateid
, &state
->open_stateid
);
1931 write_sequnlock(&state
->seqlock
);
1932 clear_bit(NFS_DELEGATED_STATE
, &state
->flags
);
1933 switch (type
& (FMODE_READ
|FMODE_WRITE
)) {
1934 case FMODE_READ
|FMODE_WRITE
:
1936 err
= nfs4_open_recover_helper(opendata
, FMODE_READ
|FMODE_WRITE
);
1939 err
= nfs4_open_recover_helper(opendata
, FMODE_WRITE
);
1943 err
= nfs4_open_recover_helper(opendata
, FMODE_READ
);
1945 nfs4_opendata_put(opendata
);
1946 return nfs4_handle_delegation_recall_error(server
, state
, stateid
, err
);
1949 static void nfs4_open_confirm_prepare(struct rpc_task
*task
, void *calldata
)
1951 struct nfs4_opendata
*data
= calldata
;
1953 nfs4_setup_sequence(data
->o_arg
.server
->nfs_client
,
1954 &data
->c_arg
.seq_args
, &data
->c_res
.seq_res
, task
);
1957 static void nfs4_open_confirm_done(struct rpc_task
*task
, void *calldata
)
1959 struct nfs4_opendata
*data
= calldata
;
1961 nfs40_sequence_done(task
, &data
->c_res
.seq_res
);
1963 data
->rpc_status
= task
->tk_status
;
1964 if (data
->rpc_status
== 0) {
1965 nfs4_stateid_copy(&data
->o_res
.stateid
, &data
->c_res
.stateid
);
1966 nfs_confirm_seqid(&data
->owner
->so_seqid
, 0);
1967 renew_lease(data
->o_res
.server
, data
->timestamp
);
1972 static void nfs4_open_confirm_release(void *calldata
)
1974 struct nfs4_opendata
*data
= calldata
;
1975 struct nfs4_state
*state
= NULL
;
1977 /* If this request hasn't been cancelled, do nothing */
1978 if (data
->cancelled
== 0)
1980 /* In case of error, no cleanup! */
1981 if (!data
->rpc_done
)
1983 state
= nfs4_opendata_to_nfs4_state(data
);
1985 nfs4_close_state(state
, data
->o_arg
.fmode
);
1987 nfs4_opendata_put(data
);
1990 static const struct rpc_call_ops nfs4_open_confirm_ops
= {
1991 .rpc_call_prepare
= nfs4_open_confirm_prepare
,
1992 .rpc_call_done
= nfs4_open_confirm_done
,
1993 .rpc_release
= nfs4_open_confirm_release
,
1997 * Note: On error, nfs4_proc_open_confirm will free the struct nfs4_opendata
1999 static int _nfs4_proc_open_confirm(struct nfs4_opendata
*data
)
2001 struct nfs_server
*server
= NFS_SERVER(d_inode(data
->dir
));
2002 struct rpc_task
*task
;
2003 struct rpc_message msg
= {
2004 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_OPEN_CONFIRM
],
2005 .rpc_argp
= &data
->c_arg
,
2006 .rpc_resp
= &data
->c_res
,
2007 .rpc_cred
= data
->owner
->so_cred
,
2009 struct rpc_task_setup task_setup_data
= {
2010 .rpc_client
= server
->client
,
2011 .rpc_message
= &msg
,
2012 .callback_ops
= &nfs4_open_confirm_ops
,
2013 .callback_data
= data
,
2014 .workqueue
= nfsiod_workqueue
,
2015 .flags
= RPC_TASK_ASYNC
,
2019 nfs4_init_sequence(&data
->c_arg
.seq_args
, &data
->c_res
.seq_res
, 1);
2020 kref_get(&data
->kref
);
2022 data
->rpc_status
= 0;
2023 data
->timestamp
= jiffies
;
2024 if (data
->is_recover
)
2025 nfs4_set_sequence_privileged(&data
->c_arg
.seq_args
);
2026 task
= rpc_run_task(&task_setup_data
);
2028 return PTR_ERR(task
);
2029 status
= rpc_wait_for_completion_task(task
);
2031 data
->cancelled
= 1;
2034 status
= data
->rpc_status
;
2039 static void nfs4_open_prepare(struct rpc_task
*task
, void *calldata
)
2041 struct nfs4_opendata
*data
= calldata
;
2042 struct nfs4_state_owner
*sp
= data
->owner
;
2043 struct nfs_client
*clp
= sp
->so_server
->nfs_client
;
2044 enum open_claim_type4 claim
= data
->o_arg
.claim
;
2046 if (nfs_wait_on_sequence(data
->o_arg
.seqid
, task
) != 0)
2049 * Check if we still need to send an OPEN call, or if we can use
2050 * a delegation instead.
2052 if (data
->state
!= NULL
) {
2053 struct nfs_delegation
*delegation
;
2055 if (can_open_cached(data
->state
, data
->o_arg
.fmode
, data
->o_arg
.open_flags
))
2058 delegation
= rcu_dereference(NFS_I(data
->state
->inode
)->delegation
);
2059 if (can_open_delegated(delegation
, data
->o_arg
.fmode
, claim
))
2060 goto unlock_no_action
;
2063 /* Update client id. */
2064 data
->o_arg
.clientid
= clp
->cl_clientid
;
2068 case NFS4_OPEN_CLAIM_PREVIOUS
:
2069 case NFS4_OPEN_CLAIM_DELEG_CUR_FH
:
2070 case NFS4_OPEN_CLAIM_DELEG_PREV_FH
:
2071 data
->o_arg
.open_bitmap
= &nfs4_open_noattr_bitmap
[0];
2072 case NFS4_OPEN_CLAIM_FH
:
2073 task
->tk_msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_OPEN_NOATTR
];
2074 nfs_copy_fh(&data
->o_res
.fh
, data
->o_arg
.fh
);
2076 data
->timestamp
= jiffies
;
2077 if (nfs4_setup_sequence(data
->o_arg
.server
->nfs_client
,
2078 &data
->o_arg
.seq_args
,
2079 &data
->o_res
.seq_res
,
2081 nfs_release_seqid(data
->o_arg
.seqid
);
2083 /* Set the create mode (note dependency on the session type) */
2084 data
->o_arg
.createmode
= NFS4_CREATE_UNCHECKED
;
2085 if (data
->o_arg
.open_flags
& O_EXCL
) {
2086 data
->o_arg
.createmode
= NFS4_CREATE_EXCLUSIVE
;
2087 if (nfs4_has_persistent_session(clp
))
2088 data
->o_arg
.createmode
= NFS4_CREATE_GUARDED
;
2089 else if (clp
->cl_mvops
->minor_version
> 0)
2090 data
->o_arg
.createmode
= NFS4_CREATE_EXCLUSIVE4_1
;
2094 trace_nfs4_cached_open(data
->state
);
2097 task
->tk_action
= NULL
;
2099 nfs4_sequence_done(task
, &data
->o_res
.seq_res
);
2102 static void nfs4_open_done(struct rpc_task
*task
, void *calldata
)
2104 struct nfs4_opendata
*data
= calldata
;
2106 data
->rpc_status
= task
->tk_status
;
2108 if (!nfs4_sequence_process(task
, &data
->o_res
.seq_res
))
2111 if (task
->tk_status
== 0) {
2112 if (data
->o_res
.f_attr
->valid
& NFS_ATTR_FATTR_TYPE
) {
2113 switch (data
->o_res
.f_attr
->mode
& S_IFMT
) {
2117 data
->rpc_status
= -ELOOP
;
2120 data
->rpc_status
= -EISDIR
;
2123 data
->rpc_status
= -ENOTDIR
;
2126 renew_lease(data
->o_res
.server
, data
->timestamp
);
2127 if (!(data
->o_res
.rflags
& NFS4_OPEN_RESULT_CONFIRM
))
2128 nfs_confirm_seqid(&data
->owner
->so_seqid
, 0);
2133 static void nfs4_open_release(void *calldata
)
2135 struct nfs4_opendata
*data
= calldata
;
2136 struct nfs4_state
*state
= NULL
;
2138 /* If this request hasn't been cancelled, do nothing */
2139 if (data
->cancelled
== 0)
2141 /* In case of error, no cleanup! */
2142 if (data
->rpc_status
!= 0 || !data
->rpc_done
)
2144 /* In case we need an open_confirm, no cleanup! */
2145 if (data
->o_res
.rflags
& NFS4_OPEN_RESULT_CONFIRM
)
2147 state
= nfs4_opendata_to_nfs4_state(data
);
2149 nfs4_close_state(state
, data
->o_arg
.fmode
);
2151 nfs4_opendata_put(data
);
2154 static const struct rpc_call_ops nfs4_open_ops
= {
2155 .rpc_call_prepare
= nfs4_open_prepare
,
2156 .rpc_call_done
= nfs4_open_done
,
2157 .rpc_release
= nfs4_open_release
,
2160 static int nfs4_run_open_task(struct nfs4_opendata
*data
, int isrecover
)
2162 struct inode
*dir
= d_inode(data
->dir
);
2163 struct nfs_server
*server
= NFS_SERVER(dir
);
2164 struct nfs_openargs
*o_arg
= &data
->o_arg
;
2165 struct nfs_openres
*o_res
= &data
->o_res
;
2166 struct rpc_task
*task
;
2167 struct rpc_message msg
= {
2168 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_OPEN
],
2171 .rpc_cred
= data
->owner
->so_cred
,
2173 struct rpc_task_setup task_setup_data
= {
2174 .rpc_client
= server
->client
,
2175 .rpc_message
= &msg
,
2176 .callback_ops
= &nfs4_open_ops
,
2177 .callback_data
= data
,
2178 .workqueue
= nfsiod_workqueue
,
2179 .flags
= RPC_TASK_ASYNC
,
2183 nfs4_init_sequence(&o_arg
->seq_args
, &o_res
->seq_res
, 1);
2184 kref_get(&data
->kref
);
2186 data
->rpc_status
= 0;
2187 data
->cancelled
= 0;
2188 data
->is_recover
= 0;
2190 nfs4_set_sequence_privileged(&o_arg
->seq_args
);
2191 data
->is_recover
= 1;
2193 task
= rpc_run_task(&task_setup_data
);
2195 return PTR_ERR(task
);
2196 status
= rpc_wait_for_completion_task(task
);
2198 data
->cancelled
= 1;
2201 status
= data
->rpc_status
;
2207 static int _nfs4_recover_proc_open(struct nfs4_opendata
*data
)
2209 struct inode
*dir
= d_inode(data
->dir
);
2210 struct nfs_openres
*o_res
= &data
->o_res
;
2213 status
= nfs4_run_open_task(data
, 1);
2214 if (status
!= 0 || !data
->rpc_done
)
2217 nfs_fattr_map_and_free_names(NFS_SERVER(dir
), &data
->f_attr
);
2219 if (o_res
->rflags
& NFS4_OPEN_RESULT_CONFIRM
)
2220 status
= _nfs4_proc_open_confirm(data
);
2226 * Additional permission checks in order to distinguish between an
2227 * open for read, and an open for execute. This works around the
2228 * fact that NFSv4 OPEN treats read and execute permissions as being
2230 * Note that in the non-execute case, we want to turn off permission
2231 * checking if we just created a new file (POSIX open() semantics).
2233 static int nfs4_opendata_access(struct rpc_cred
*cred
,
2234 struct nfs4_opendata
*opendata
,
2235 struct nfs4_state
*state
, fmode_t fmode
,
2238 struct nfs_access_entry cache
;
2241 /* access call failed or for some reason the server doesn't
2242 * support any access modes -- defer access call until later */
2243 if (opendata
->o_res
.access_supported
== 0)
2248 * Use openflags to check for exec, because fmode won't
2249 * always have FMODE_EXEC set when file open for exec.
2251 if (openflags
& __FMODE_EXEC
) {
2252 /* ONLY check for exec rights */
2254 } else if ((fmode
& FMODE_READ
) && !opendata
->file_created
)
2258 cache
.jiffies
= jiffies
;
2259 nfs_access_set_mask(&cache
, opendata
->o_res
.access_result
);
2260 nfs_access_add_cache(state
->inode
, &cache
);
2262 if ((mask
& ~cache
.mask
& (MAY_READ
| MAY_EXEC
)) == 0)
2269 * Note: On error, nfs4_proc_open will free the struct nfs4_opendata
2271 static int _nfs4_proc_open(struct nfs4_opendata
*data
)
2273 struct inode
*dir
= d_inode(data
->dir
);
2274 struct nfs_server
*server
= NFS_SERVER(dir
);
2275 struct nfs_openargs
*o_arg
= &data
->o_arg
;
2276 struct nfs_openres
*o_res
= &data
->o_res
;
2279 status
= nfs4_run_open_task(data
, 0);
2280 if (!data
->rpc_done
)
2283 if (status
== -NFS4ERR_BADNAME
&&
2284 !(o_arg
->open_flags
& O_CREAT
))
2289 nfs_fattr_map_and_free_names(server
, &data
->f_attr
);
2291 if (o_arg
->open_flags
& O_CREAT
) {
2292 if (o_arg
->open_flags
& O_EXCL
)
2293 data
->file_created
= 1;
2294 else if (o_res
->cinfo
.before
!= o_res
->cinfo
.after
)
2295 data
->file_created
= 1;
2296 if (data
->file_created
|| dir
->i_version
!= o_res
->cinfo
.after
)
2297 update_changeattr(dir
, &o_res
->cinfo
,
2298 o_res
->f_attr
->time_start
);
2300 if ((o_res
->rflags
& NFS4_OPEN_RESULT_LOCKTYPE_POSIX
) == 0)
2301 server
->caps
&= ~NFS_CAP_POSIX_LOCK
;
2302 if(o_res
->rflags
& NFS4_OPEN_RESULT_CONFIRM
) {
2303 status
= _nfs4_proc_open_confirm(data
);
2307 if (!(o_res
->f_attr
->valid
& NFS_ATTR_FATTR
)) {
2308 nfs4_sequence_free_slot(&o_res
->seq_res
);
2309 nfs4_proc_getattr(server
, &o_res
->fh
, o_res
->f_attr
, o_res
->f_label
);
2316 * reclaim state on the server after a network partition.
2317 * Assumes caller holds the appropriate lock
2319 static int _nfs4_open_expired(struct nfs_open_context
*ctx
, struct nfs4_state
*state
)
2321 struct nfs4_opendata
*opendata
;
2324 opendata
= nfs4_open_recoverdata_alloc(ctx
, state
,
2325 NFS4_OPEN_CLAIM_FH
);
2326 if (IS_ERR(opendata
))
2327 return PTR_ERR(opendata
);
2328 ret
= nfs4_open_recover(opendata
, state
);
2330 d_drop(ctx
->dentry
);
2331 nfs4_opendata_put(opendata
);
2335 static int nfs4_do_open_expired(struct nfs_open_context
*ctx
, struct nfs4_state
*state
)
2337 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
2338 struct nfs4_exception exception
= { };
2342 err
= _nfs4_open_expired(ctx
, state
);
2343 trace_nfs4_open_expired(ctx
, 0, err
);
2344 if (nfs4_clear_cap_atomic_open_v1(server
, err
, &exception
))
2349 case -NFS4ERR_GRACE
:
2350 case -NFS4ERR_DELAY
:
2351 nfs4_handle_exception(server
, err
, &exception
);
2354 } while (exception
.retry
);
2359 static int nfs4_open_expired(struct nfs4_state_owner
*sp
, struct nfs4_state
*state
)
2361 struct nfs_open_context
*ctx
;
2364 ctx
= nfs4_state_find_open_context(state
);
2367 ret
= nfs4_do_open_expired(ctx
, state
);
2368 put_nfs_open_context(ctx
);
2372 static void nfs_finish_clear_delegation_stateid(struct nfs4_state
*state
,
2373 const nfs4_stateid
*stateid
)
2375 nfs_remove_bad_delegation(state
->inode
, stateid
);
2376 write_seqlock(&state
->seqlock
);
2377 nfs4_stateid_copy(&state
->stateid
, &state
->open_stateid
);
2378 write_sequnlock(&state
->seqlock
);
2379 clear_bit(NFS_DELEGATED_STATE
, &state
->flags
);
2382 static void nfs40_clear_delegation_stateid(struct nfs4_state
*state
)
2384 if (rcu_access_pointer(NFS_I(state
->inode
)->delegation
) != NULL
)
2385 nfs_finish_clear_delegation_stateid(state
, NULL
);
2388 static int nfs40_open_expired(struct nfs4_state_owner
*sp
, struct nfs4_state
*state
)
2390 /* NFSv4.0 doesn't allow for delegation recovery on open expire */
2391 nfs40_clear_delegation_stateid(state
);
2392 return nfs4_open_expired(sp
, state
);
2395 static int nfs40_test_and_free_expired_stateid(struct nfs_server
*server
,
2396 nfs4_stateid
*stateid
,
2397 struct rpc_cred
*cred
)
2399 return -NFS4ERR_BAD_STATEID
;
2402 #if defined(CONFIG_NFS_V4_1)
2403 static int nfs41_test_and_free_expired_stateid(struct nfs_server
*server
,
2404 nfs4_stateid
*stateid
,
2405 struct rpc_cred
*cred
)
2409 switch (stateid
->type
) {
2412 case NFS4_INVALID_STATEID_TYPE
:
2413 case NFS4_SPECIAL_STATEID_TYPE
:
2414 return -NFS4ERR_BAD_STATEID
;
2415 case NFS4_REVOKED_STATEID_TYPE
:
2419 status
= nfs41_test_stateid(server
, stateid
, cred
);
2421 case -NFS4ERR_EXPIRED
:
2422 case -NFS4ERR_ADMIN_REVOKED
:
2423 case -NFS4ERR_DELEG_REVOKED
:
2429 /* Ack the revoked state to the server */
2430 nfs41_free_stateid(server
, stateid
, cred
, true);
2431 return -NFS4ERR_EXPIRED
;
2434 static void nfs41_check_delegation_stateid(struct nfs4_state
*state
)
2436 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
2437 nfs4_stateid stateid
;
2438 struct nfs_delegation
*delegation
;
2439 struct rpc_cred
*cred
;
2442 /* Get the delegation credential for use by test/free_stateid */
2444 delegation
= rcu_dereference(NFS_I(state
->inode
)->delegation
);
2445 if (delegation
== NULL
) {
2450 nfs4_stateid_copy(&stateid
, &delegation
->stateid
);
2451 if (test_bit(NFS_DELEGATION_REVOKED
, &delegation
->flags
) ||
2452 !test_and_clear_bit(NFS_DELEGATION_TEST_EXPIRED
,
2453 &delegation
->flags
)) {
2455 nfs_finish_clear_delegation_stateid(state
, &stateid
);
2459 cred
= get_rpccred(delegation
->cred
);
2461 status
= nfs41_test_and_free_expired_stateid(server
, &stateid
, cred
);
2462 trace_nfs4_test_delegation_stateid(state
, NULL
, status
);
2463 if (status
== -NFS4ERR_EXPIRED
|| status
== -NFS4ERR_BAD_STATEID
)
2464 nfs_finish_clear_delegation_stateid(state
, &stateid
);
2470 * nfs41_check_expired_locks - possibly free a lock stateid
2472 * @state: NFSv4 state for an inode
2474 * Returns NFS_OK if recovery for this stateid is now finished.
2475 * Otherwise a negative NFS4ERR value is returned.
2477 static int nfs41_check_expired_locks(struct nfs4_state
*state
)
2479 int status
, ret
= NFS_OK
;
2480 struct nfs4_lock_state
*lsp
, *prev
= NULL
;
2481 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
2483 if (!test_bit(LK_STATE_IN_USE
, &state
->flags
))
2486 spin_lock(&state
->state_lock
);
2487 list_for_each_entry(lsp
, &state
->lock_states
, ls_locks
) {
2488 if (test_bit(NFS_LOCK_INITIALIZED
, &lsp
->ls_flags
)) {
2489 struct rpc_cred
*cred
= lsp
->ls_state
->owner
->so_cred
;
2491 atomic_inc(&lsp
->ls_count
);
2492 spin_unlock(&state
->state_lock
);
2494 nfs4_put_lock_state(prev
);
2497 status
= nfs41_test_and_free_expired_stateid(server
,
2500 trace_nfs4_test_lock_stateid(state
, lsp
, status
);
2501 if (status
== -NFS4ERR_EXPIRED
||
2502 status
== -NFS4ERR_BAD_STATEID
) {
2503 clear_bit(NFS_LOCK_INITIALIZED
, &lsp
->ls_flags
);
2504 lsp
->ls_stateid
.type
= NFS4_INVALID_STATEID_TYPE
;
2505 if (!recover_lost_locks
)
2506 set_bit(NFS_LOCK_LOST
, &lsp
->ls_flags
);
2507 } else if (status
!= NFS_OK
) {
2509 nfs4_put_lock_state(prev
);
2512 spin_lock(&state
->state_lock
);
2515 spin_unlock(&state
->state_lock
);
2516 nfs4_put_lock_state(prev
);
2522 * nfs41_check_open_stateid - possibly free an open stateid
2524 * @state: NFSv4 state for an inode
2526 * Returns NFS_OK if recovery for this stateid is now finished.
2527 * Otherwise a negative NFS4ERR value is returned.
2529 static int nfs41_check_open_stateid(struct nfs4_state
*state
)
2531 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
2532 nfs4_stateid
*stateid
= &state
->open_stateid
;
2533 struct rpc_cred
*cred
= state
->owner
->so_cred
;
2536 if (test_bit(NFS_OPEN_STATE
, &state
->flags
) == 0) {
2537 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) == 0) {
2538 if (nfs4_have_delegation(state
->inode
, state
->state
))
2540 return -NFS4ERR_OPENMODE
;
2542 return -NFS4ERR_BAD_STATEID
;
2544 status
= nfs41_test_and_free_expired_stateid(server
, stateid
, cred
);
2545 trace_nfs4_test_open_stateid(state
, NULL
, status
);
2546 if (status
== -NFS4ERR_EXPIRED
|| status
== -NFS4ERR_BAD_STATEID
) {
2547 clear_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
2548 clear_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
2549 clear_bit(NFS_O_RDWR_STATE
, &state
->flags
);
2550 clear_bit(NFS_OPEN_STATE
, &state
->flags
);
2551 stateid
->type
= NFS4_INVALID_STATEID_TYPE
;
2553 if (status
!= NFS_OK
)
2555 if (nfs_open_stateid_recover_openmode(state
))
2556 return -NFS4ERR_OPENMODE
;
2560 static int nfs41_open_expired(struct nfs4_state_owner
*sp
, struct nfs4_state
*state
)
2564 nfs41_check_delegation_stateid(state
);
2565 status
= nfs41_check_expired_locks(state
);
2566 if (status
!= NFS_OK
)
2568 status
= nfs41_check_open_stateid(state
);
2569 if (status
!= NFS_OK
)
2570 status
= nfs4_open_expired(sp
, state
);
2576 * on an EXCLUSIVE create, the server should send back a bitmask with FATTR4-*
2577 * fields corresponding to attributes that were used to store the verifier.
2578 * Make sure we clobber those fields in the later setattr call
2580 static inline void nfs4_exclusive_attrset(struct nfs4_opendata
*opendata
,
2581 struct iattr
*sattr
, struct nfs4_label
**label
)
2583 const u32
*attrset
= opendata
->o_res
.attrset
;
2585 if ((attrset
[1] & FATTR4_WORD1_TIME_ACCESS
) &&
2586 !(sattr
->ia_valid
& ATTR_ATIME_SET
))
2587 sattr
->ia_valid
|= ATTR_ATIME
;
2589 if ((attrset
[1] & FATTR4_WORD1_TIME_MODIFY
) &&
2590 !(sattr
->ia_valid
& ATTR_MTIME_SET
))
2591 sattr
->ia_valid
|= ATTR_MTIME
;
2593 /* Except MODE, it seems harmless of setting twice. */
2594 if (opendata
->o_arg
.createmode
!= NFS4_CREATE_EXCLUSIVE
&&
2595 attrset
[1] & FATTR4_WORD1_MODE
)
2596 sattr
->ia_valid
&= ~ATTR_MODE
;
2598 if (attrset
[2] & FATTR4_WORD2_SECURITY_LABEL
)
2602 static int _nfs4_open_and_get_state(struct nfs4_opendata
*opendata
,
2605 struct nfs_open_context
*ctx
)
2607 struct nfs4_state_owner
*sp
= opendata
->owner
;
2608 struct nfs_server
*server
= sp
->so_server
;
2609 struct dentry
*dentry
;
2610 struct nfs4_state
*state
;
2614 seq
= raw_seqcount_begin(&sp
->so_reclaim_seqcount
);
2616 ret
= _nfs4_proc_open(opendata
);
2620 state
= nfs4_opendata_to_nfs4_state(opendata
);
2621 ret
= PTR_ERR(state
);
2625 if (server
->caps
& NFS_CAP_POSIX_LOCK
)
2626 set_bit(NFS_STATE_POSIX_LOCKS
, &state
->flags
);
2627 if (opendata
->o_res
.rflags
& NFS4_OPEN_RESULT_MAY_NOTIFY_LOCK
)
2628 set_bit(NFS_STATE_MAY_NOTIFY_LOCK
, &state
->flags
);
2630 dentry
= opendata
->dentry
;
2631 if (d_really_is_negative(dentry
)) {
2632 struct dentry
*alias
;
2634 alias
= d_exact_alias(dentry
, state
->inode
);
2636 alias
= d_splice_alias(igrab(state
->inode
), dentry
);
2637 /* d_splice_alias() can't fail here - it's a non-directory */
2640 ctx
->dentry
= dentry
= alias
;
2642 nfs_set_verifier(dentry
,
2643 nfs_save_change_attribute(d_inode(opendata
->dir
)));
2646 ret
= nfs4_opendata_access(sp
->so_cred
, opendata
, state
, fmode
, flags
);
2650 if (d_inode(dentry
) == state
->inode
) {
2651 nfs_inode_attach_open_context(ctx
);
2652 if (read_seqcount_retry(&sp
->so_reclaim_seqcount
, seq
))
2653 nfs4_schedule_stateid_recovery(server
, state
);
2660 * Returns a referenced nfs4_state
2662 static int _nfs4_do_open(struct inode
*dir
,
2663 struct nfs_open_context
*ctx
,
2665 struct iattr
*sattr
,
2666 struct nfs4_label
*label
,
2669 struct nfs4_state_owner
*sp
;
2670 struct nfs4_state
*state
= NULL
;
2671 struct nfs_server
*server
= NFS_SERVER(dir
);
2672 struct nfs4_opendata
*opendata
;
2673 struct dentry
*dentry
= ctx
->dentry
;
2674 struct rpc_cred
*cred
= ctx
->cred
;
2675 struct nfs4_threshold
**ctx_th
= &ctx
->mdsthreshold
;
2676 fmode_t fmode
= ctx
->mode
& (FMODE_READ
|FMODE_WRITE
|FMODE_EXEC
);
2677 enum open_claim_type4 claim
= NFS4_OPEN_CLAIM_NULL
;
2678 struct nfs4_label
*olabel
= NULL
;
2681 /* Protect against reboot recovery conflicts */
2683 sp
= nfs4_get_state_owner(server
, cred
, GFP_KERNEL
);
2685 dprintk("nfs4_do_open: nfs4_get_state_owner failed!\n");
2688 status
= nfs4_client_recover_expired_lease(server
->nfs_client
);
2690 goto err_put_state_owner
;
2691 if (d_really_is_positive(dentry
))
2692 nfs4_return_incompatible_delegation(d_inode(dentry
), fmode
);
2694 if (d_really_is_positive(dentry
))
2695 claim
= NFS4_OPEN_CLAIM_FH
;
2696 opendata
= nfs4_opendata_alloc(dentry
, sp
, fmode
, flags
, sattr
,
2697 label
, claim
, GFP_KERNEL
);
2698 if (opendata
== NULL
)
2699 goto err_put_state_owner
;
2702 olabel
= nfs4_label_alloc(server
, GFP_KERNEL
);
2703 if (IS_ERR(olabel
)) {
2704 status
= PTR_ERR(olabel
);
2705 goto err_opendata_put
;
2709 if (server
->attr_bitmask
[2] & FATTR4_WORD2_MDSTHRESHOLD
) {
2710 if (!opendata
->f_attr
.mdsthreshold
) {
2711 opendata
->f_attr
.mdsthreshold
= pnfs_mdsthreshold_alloc();
2712 if (!opendata
->f_attr
.mdsthreshold
)
2713 goto err_free_label
;
2715 opendata
->o_arg
.open_bitmap
= &nfs4_pnfs_open_bitmap
[0];
2717 if (d_really_is_positive(dentry
))
2718 opendata
->state
= nfs4_get_open_state(d_inode(dentry
), sp
);
2720 status
= _nfs4_open_and_get_state(opendata
, fmode
, flags
, ctx
);
2722 goto err_free_label
;
2725 if ((opendata
->o_arg
.open_flags
& (O_CREAT
|O_EXCL
)) == (O_CREAT
|O_EXCL
) &&
2726 (opendata
->o_arg
.createmode
!= NFS4_CREATE_GUARDED
)) {
2727 nfs4_exclusive_attrset(opendata
, sattr
, &label
);
2729 * send create attributes which was not set by open
2730 * with an extra setattr.
2732 if (sattr
->ia_valid
& NFS4_VALID_ATTRS
) {
2733 nfs_fattr_init(opendata
->o_res
.f_attr
);
2734 status
= nfs4_do_setattr(state
->inode
, cred
,
2735 opendata
->o_res
.f_attr
, sattr
,
2736 ctx
, label
, olabel
);
2738 nfs_setattr_update_inode(state
->inode
, sattr
,
2739 opendata
->o_res
.f_attr
);
2740 nfs_setsecurity(state
->inode
, opendata
->o_res
.f_attr
, olabel
);
2744 if (opened
&& opendata
->file_created
)
2745 *opened
|= FILE_CREATED
;
2747 if (pnfs_use_threshold(ctx_th
, opendata
->f_attr
.mdsthreshold
, server
)) {
2748 *ctx_th
= opendata
->f_attr
.mdsthreshold
;
2749 opendata
->f_attr
.mdsthreshold
= NULL
;
2752 nfs4_label_free(olabel
);
2754 nfs4_opendata_put(opendata
);
2755 nfs4_put_state_owner(sp
);
2758 nfs4_label_free(olabel
);
2760 nfs4_opendata_put(opendata
);
2761 err_put_state_owner
:
2762 nfs4_put_state_owner(sp
);
2768 static struct nfs4_state
*nfs4_do_open(struct inode
*dir
,
2769 struct nfs_open_context
*ctx
,
2771 struct iattr
*sattr
,
2772 struct nfs4_label
*label
,
2775 struct nfs_server
*server
= NFS_SERVER(dir
);
2776 struct nfs4_exception exception
= { };
2777 struct nfs4_state
*res
;
2781 status
= _nfs4_do_open(dir
, ctx
, flags
, sattr
, label
, opened
);
2783 trace_nfs4_open_file(ctx
, flags
, status
);
2786 /* NOTE: BAD_SEQID means the server and client disagree about the
2787 * book-keeping w.r.t. state-changing operations
2788 * (OPEN/CLOSE/LOCK/LOCKU...)
2789 * It is actually a sign of a bug on the client or on the server.
2791 * If we receive a BAD_SEQID error in the particular case of
2792 * doing an OPEN, we assume that nfs_increment_open_seqid() will
2793 * have unhashed the old state_owner for us, and that we can
2794 * therefore safely retry using a new one. We should still warn
2795 * the user though...
2797 if (status
== -NFS4ERR_BAD_SEQID
) {
2798 pr_warn_ratelimited("NFS: v4 server %s "
2799 " returned a bad sequence-id error!\n",
2800 NFS_SERVER(dir
)->nfs_client
->cl_hostname
);
2801 exception
.retry
= 1;
2805 * BAD_STATEID on OPEN means that the server cancelled our
2806 * state before it received the OPEN_CONFIRM.
2807 * Recover by retrying the request as per the discussion
2808 * on Page 181 of RFC3530.
2810 if (status
== -NFS4ERR_BAD_STATEID
) {
2811 exception
.retry
= 1;
2814 if (status
== -EAGAIN
) {
2815 /* We must have found a delegation */
2816 exception
.retry
= 1;
2819 if (nfs4_clear_cap_atomic_open_v1(server
, status
, &exception
))
2821 res
= ERR_PTR(nfs4_handle_exception(server
,
2822 status
, &exception
));
2823 } while (exception
.retry
);
2827 static int _nfs4_do_setattr(struct inode
*inode
,
2828 struct nfs_setattrargs
*arg
,
2829 struct nfs_setattrres
*res
,
2830 struct rpc_cred
*cred
,
2831 struct nfs_open_context
*ctx
)
2833 struct nfs_server
*server
= NFS_SERVER(inode
);
2834 struct rpc_message msg
= {
2835 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETATTR
],
2840 struct rpc_cred
*delegation_cred
= NULL
;
2841 unsigned long timestamp
= jiffies
;
2846 nfs_fattr_init(res
->fattr
);
2848 /* Servers should only apply open mode checks for file size changes */
2849 truncate
= (arg
->iap
->ia_valid
& ATTR_SIZE
) ? true : false;
2850 fmode
= truncate
? FMODE_WRITE
: FMODE_READ
;
2852 if (nfs4_copy_delegation_stateid(inode
, fmode
, &arg
->stateid
, &delegation_cred
)) {
2853 /* Use that stateid */
2854 } else if (truncate
&& ctx
!= NULL
) {
2855 struct nfs_lock_context
*l_ctx
;
2856 if (!nfs4_valid_open_stateid(ctx
->state
))
2858 l_ctx
= nfs_get_lock_context(ctx
);
2860 return PTR_ERR(l_ctx
);
2861 status
= nfs4_select_rw_stateid(ctx
->state
, FMODE_WRITE
, l_ctx
,
2862 &arg
->stateid
, &delegation_cred
);
2863 nfs_put_lock_context(l_ctx
);
2867 nfs4_stateid_copy(&arg
->stateid
, &zero_stateid
);
2868 if (delegation_cred
)
2869 msg
.rpc_cred
= delegation_cred
;
2871 status
= nfs4_call_sync(server
->client
, server
, &msg
, &arg
->seq_args
, &res
->seq_res
, 1);
2873 put_rpccred(delegation_cred
);
2874 if (status
== 0 && ctx
!= NULL
)
2875 renew_lease(server
, timestamp
);
2876 trace_nfs4_setattr(inode
, &arg
->stateid
, status
);
2880 static int nfs4_do_setattr(struct inode
*inode
, struct rpc_cred
*cred
,
2881 struct nfs_fattr
*fattr
, struct iattr
*sattr
,
2882 struct nfs_open_context
*ctx
, struct nfs4_label
*ilabel
,
2883 struct nfs4_label
*olabel
)
2885 struct nfs_server
*server
= NFS_SERVER(inode
);
2886 struct nfs4_state
*state
= ctx
? ctx
->state
: NULL
;
2887 struct nfs_setattrargs arg
= {
2888 .fh
= NFS_FH(inode
),
2891 .bitmask
= server
->attr_bitmask
,
2894 struct nfs_setattrres res
= {
2899 struct nfs4_exception exception
= {
2902 .stateid
= &arg
.stateid
,
2906 arg
.bitmask
= nfs4_bitmask(server
, ilabel
);
2908 arg
.bitmask
= nfs4_bitmask(server
, olabel
);
2911 err
= _nfs4_do_setattr(inode
, &arg
, &res
, cred
, ctx
);
2913 case -NFS4ERR_OPENMODE
:
2914 if (!(sattr
->ia_valid
& ATTR_SIZE
)) {
2915 pr_warn_once("NFSv4: server %s is incorrectly "
2916 "applying open mode checks to "
2917 "a SETATTR that is not "
2918 "changing file size.\n",
2919 server
->nfs_client
->cl_hostname
);
2921 if (state
&& !(state
->state
& FMODE_WRITE
)) {
2923 if (sattr
->ia_valid
& ATTR_OPEN
)
2928 err
= nfs4_handle_exception(server
, err
, &exception
);
2929 } while (exception
.retry
);
2935 nfs4_wait_on_layoutreturn(struct inode
*inode
, struct rpc_task
*task
)
2937 if (inode
== NULL
|| !nfs_have_layout(inode
))
2940 return pnfs_wait_on_layoutreturn(inode
, task
);
2943 struct nfs4_closedata
{
2944 struct inode
*inode
;
2945 struct nfs4_state
*state
;
2946 struct nfs_closeargs arg
;
2947 struct nfs_closeres res
;
2949 struct nfs4_layoutreturn_args arg
;
2950 struct nfs4_layoutreturn_res res
;
2951 struct nfs4_xdr_opaque_data ld_private
;
2955 struct nfs_fattr fattr
;
2956 unsigned long timestamp
;
2959 static void nfs4_free_closedata(void *data
)
2961 struct nfs4_closedata
*calldata
= data
;
2962 struct nfs4_state_owner
*sp
= calldata
->state
->owner
;
2963 struct super_block
*sb
= calldata
->state
->inode
->i_sb
;
2965 if (calldata
->lr
.roc
)
2966 pnfs_roc_release(&calldata
->lr
.arg
, &calldata
->lr
.res
,
2967 calldata
->res
.lr_ret
);
2968 nfs4_put_open_state(calldata
->state
);
2969 nfs_free_seqid(calldata
->arg
.seqid
);
2970 nfs4_put_state_owner(sp
);
2971 nfs_sb_deactive(sb
);
2975 static void nfs4_close_done(struct rpc_task
*task
, void *data
)
2977 struct nfs4_closedata
*calldata
= data
;
2978 struct nfs4_state
*state
= calldata
->state
;
2979 struct nfs_server
*server
= NFS_SERVER(calldata
->inode
);
2980 nfs4_stateid
*res_stateid
= NULL
;
2982 dprintk("%s: begin!\n", __func__
);
2983 if (!nfs4_sequence_done(task
, &calldata
->res
.seq_res
))
2985 trace_nfs4_close(state
, &calldata
->arg
, &calldata
->res
, task
->tk_status
);
2987 /* Handle Layoutreturn errors */
2988 if (calldata
->arg
.lr_args
&& task
->tk_status
!= 0) {
2989 switch (calldata
->res
.lr_ret
) {
2991 calldata
->res
.lr_ret
= -NFS4ERR_NOMATCHING_LAYOUT
;
2994 calldata
->arg
.lr_args
= NULL
;
2995 calldata
->res
.lr_res
= NULL
;
2997 case -NFS4ERR_ADMIN_REVOKED
:
2998 case -NFS4ERR_DELEG_REVOKED
:
2999 case -NFS4ERR_EXPIRED
:
3000 case -NFS4ERR_BAD_STATEID
:
3001 case -NFS4ERR_OLD_STATEID
:
3002 case -NFS4ERR_UNKNOWN_LAYOUTTYPE
:
3003 case -NFS4ERR_WRONG_CRED
:
3004 calldata
->arg
.lr_args
= NULL
;
3005 calldata
->res
.lr_res
= NULL
;
3006 calldata
->res
.lr_ret
= 0;
3007 rpc_restart_call_prepare(task
);
3012 /* hmm. we are done with the inode, and in the process of freeing
3013 * the state_owner. we keep this around to process errors
3015 switch (task
->tk_status
) {
3017 res_stateid
= &calldata
->res
.stateid
;
3018 renew_lease(server
, calldata
->timestamp
);
3020 case -NFS4ERR_ACCESS
:
3021 if (calldata
->arg
.bitmask
!= NULL
) {
3022 calldata
->arg
.bitmask
= NULL
;
3023 calldata
->res
.fattr
= NULL
;
3024 task
->tk_status
= 0;
3025 rpc_restart_call_prepare(task
);
3030 case -NFS4ERR_ADMIN_REVOKED
:
3031 case -NFS4ERR_STALE_STATEID
:
3032 case -NFS4ERR_EXPIRED
:
3033 nfs4_free_revoked_stateid(server
,
3034 &calldata
->arg
.stateid
,
3035 task
->tk_msg
.rpc_cred
);
3036 case -NFS4ERR_OLD_STATEID
:
3037 case -NFS4ERR_BAD_STATEID
:
3038 if (!nfs4_stateid_match(&calldata
->arg
.stateid
,
3039 &state
->open_stateid
)) {
3040 rpc_restart_call_prepare(task
);
3043 if (calldata
->arg
.fmode
== 0)
3046 if (nfs4_async_handle_error(task
, server
, state
, NULL
) == -EAGAIN
) {
3047 rpc_restart_call_prepare(task
);
3051 nfs_clear_open_stateid(state
, &calldata
->arg
.stateid
,
3052 res_stateid
, calldata
->arg
.fmode
);
3054 nfs_release_seqid(calldata
->arg
.seqid
);
3055 nfs_refresh_inode(calldata
->inode
, &calldata
->fattr
);
3056 dprintk("%s: done, ret = %d!\n", __func__
, task
->tk_status
);
3059 static void nfs4_close_prepare(struct rpc_task
*task
, void *data
)
3061 struct nfs4_closedata
*calldata
= data
;
3062 struct nfs4_state
*state
= calldata
->state
;
3063 struct inode
*inode
= calldata
->inode
;
3064 bool is_rdonly
, is_wronly
, is_rdwr
;
3067 dprintk("%s: begin!\n", __func__
);
3068 if (nfs_wait_on_sequence(calldata
->arg
.seqid
, task
) != 0)
3071 task
->tk_msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_OPEN_DOWNGRADE
];
3072 spin_lock(&state
->owner
->so_lock
);
3073 is_rdwr
= test_bit(NFS_O_RDWR_STATE
, &state
->flags
);
3074 is_rdonly
= test_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
3075 is_wronly
= test_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
3076 nfs4_stateid_copy(&calldata
->arg
.stateid
, &state
->open_stateid
);
3077 /* Calculate the change in open mode */
3078 calldata
->arg
.fmode
= 0;
3079 if (state
->n_rdwr
== 0) {
3080 if (state
->n_rdonly
== 0)
3081 call_close
|= is_rdonly
;
3083 calldata
->arg
.fmode
|= FMODE_READ
;
3084 if (state
->n_wronly
== 0)
3085 call_close
|= is_wronly
;
3087 calldata
->arg
.fmode
|= FMODE_WRITE
;
3088 if (calldata
->arg
.fmode
!= (FMODE_READ
|FMODE_WRITE
))
3089 call_close
|= is_rdwr
;
3091 calldata
->arg
.fmode
|= FMODE_READ
|FMODE_WRITE
;
3093 if (!nfs4_valid_open_stateid(state
) ||
3094 test_bit(NFS_OPEN_STATE
, &state
->flags
) == 0)
3096 spin_unlock(&state
->owner
->so_lock
);
3099 /* Note: exit _without_ calling nfs4_close_done */
3103 if (!calldata
->lr
.roc
&& nfs4_wait_on_layoutreturn(inode
, task
)) {
3104 nfs_release_seqid(calldata
->arg
.seqid
);
3108 if (calldata
->arg
.fmode
== 0)
3109 task
->tk_msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_CLOSE
];
3111 if (calldata
->arg
.fmode
== 0 || calldata
->arg
.fmode
== FMODE_READ
) {
3112 /* Close-to-open cache consistency revalidation */
3113 if (!nfs4_have_delegation(inode
, FMODE_READ
))
3114 calldata
->arg
.bitmask
= NFS_SERVER(inode
)->cache_consistency_bitmask
;
3116 calldata
->arg
.bitmask
= NULL
;
3119 calldata
->arg
.share_access
=
3120 nfs4_map_atomic_open_share(NFS_SERVER(inode
),
3121 calldata
->arg
.fmode
, 0);
3123 if (calldata
->res
.fattr
== NULL
)
3124 calldata
->arg
.bitmask
= NULL
;
3125 else if (calldata
->arg
.bitmask
== NULL
)
3126 calldata
->res
.fattr
= NULL
;
3127 calldata
->timestamp
= jiffies
;
3128 if (nfs4_setup_sequence(NFS_SERVER(inode
)->nfs_client
,
3129 &calldata
->arg
.seq_args
,
3130 &calldata
->res
.seq_res
,
3132 nfs_release_seqid(calldata
->arg
.seqid
);
3133 dprintk("%s: done!\n", __func__
);
3136 task
->tk_action
= NULL
;
3138 nfs4_sequence_done(task
, &calldata
->res
.seq_res
);
3141 static const struct rpc_call_ops nfs4_close_ops
= {
3142 .rpc_call_prepare
= nfs4_close_prepare
,
3143 .rpc_call_done
= nfs4_close_done
,
3144 .rpc_release
= nfs4_free_closedata
,
3148 * It is possible for data to be read/written from a mem-mapped file
3149 * after the sys_close call (which hits the vfs layer as a flush).
3150 * This means that we can't safely call nfsv4 close on a file until
3151 * the inode is cleared. This in turn means that we are not good
3152 * NFSv4 citizens - we do not indicate to the server to update the file's
3153 * share state even when we are done with one of the three share
3154 * stateid's in the inode.
3156 * NOTE: Caller must be holding the sp->so_owner semaphore!
3158 int nfs4_do_close(struct nfs4_state
*state
, gfp_t gfp_mask
, int wait
)
3160 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
3161 struct nfs_seqid
*(*alloc_seqid
)(struct nfs_seqid_counter
*, gfp_t
);
3162 struct nfs4_closedata
*calldata
;
3163 struct nfs4_state_owner
*sp
= state
->owner
;
3164 struct rpc_task
*task
;
3165 struct rpc_message msg
= {
3166 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_CLOSE
],
3167 .rpc_cred
= state
->owner
->so_cred
,
3169 struct rpc_task_setup task_setup_data
= {
3170 .rpc_client
= server
->client
,
3171 .rpc_message
= &msg
,
3172 .callback_ops
= &nfs4_close_ops
,
3173 .workqueue
= nfsiod_workqueue
,
3174 .flags
= RPC_TASK_ASYNC
,
3176 int status
= -ENOMEM
;
3178 nfs4_state_protect(server
->nfs_client
, NFS_SP4_MACH_CRED_CLEANUP
,
3179 &task_setup_data
.rpc_client
, &msg
);
3181 calldata
= kzalloc(sizeof(*calldata
), gfp_mask
);
3182 if (calldata
== NULL
)
3184 nfs4_init_sequence(&calldata
->arg
.seq_args
, &calldata
->res
.seq_res
, 1);
3185 calldata
->inode
= state
->inode
;
3186 calldata
->state
= state
;
3187 calldata
->arg
.fh
= NFS_FH(state
->inode
);
3188 /* Serialization for the sequence id */
3189 alloc_seqid
= server
->nfs_client
->cl_mvops
->alloc_seqid
;
3190 calldata
->arg
.seqid
= alloc_seqid(&state
->owner
->so_seqid
, gfp_mask
);
3191 if (IS_ERR(calldata
->arg
.seqid
))
3192 goto out_free_calldata
;
3193 nfs_fattr_init(&calldata
->fattr
);
3194 calldata
->arg
.fmode
= 0;
3195 calldata
->lr
.arg
.ld_private
= &calldata
->lr
.ld_private
;
3196 calldata
->res
.fattr
= &calldata
->fattr
;
3197 calldata
->res
.seqid
= calldata
->arg
.seqid
;
3198 calldata
->res
.server
= server
;
3199 calldata
->res
.lr_ret
= -NFS4ERR_NOMATCHING_LAYOUT
;
3200 calldata
->lr
.roc
= pnfs_roc(state
->inode
,
3201 &calldata
->lr
.arg
, &calldata
->lr
.res
, msg
.rpc_cred
);
3202 if (calldata
->lr
.roc
) {
3203 calldata
->arg
.lr_args
= &calldata
->lr
.arg
;
3204 calldata
->res
.lr_res
= &calldata
->lr
.res
;
3206 nfs_sb_active(calldata
->inode
->i_sb
);
3208 msg
.rpc_argp
= &calldata
->arg
;
3209 msg
.rpc_resp
= &calldata
->res
;
3210 task_setup_data
.callback_data
= calldata
;
3211 task
= rpc_run_task(&task_setup_data
);
3213 return PTR_ERR(task
);
3216 status
= rpc_wait_for_completion_task(task
);
3222 nfs4_put_open_state(state
);
3223 nfs4_put_state_owner(sp
);
3227 static struct inode
*
3228 nfs4_atomic_open(struct inode
*dir
, struct nfs_open_context
*ctx
,
3229 int open_flags
, struct iattr
*attr
, int *opened
)
3231 struct nfs4_state
*state
;
3232 struct nfs4_label l
= {0, 0, 0, NULL
}, *label
= NULL
;
3234 label
= nfs4_label_init_security(dir
, ctx
->dentry
, attr
, &l
);
3236 /* Protect against concurrent sillydeletes */
3237 state
= nfs4_do_open(dir
, ctx
, open_flags
, attr
, label
, opened
);
3239 nfs4_label_release_security(label
);
3242 return ERR_CAST(state
);
3243 return state
->inode
;
3246 static void nfs4_close_context(struct nfs_open_context
*ctx
, int is_sync
)
3248 if (ctx
->state
== NULL
)
3251 nfs4_close_sync(ctx
->state
, ctx
->mode
);
3253 nfs4_close_state(ctx
->state
, ctx
->mode
);
3256 #define FATTR4_WORD1_NFS40_MASK (2*FATTR4_WORD1_MOUNTED_ON_FILEID - 1UL)
3257 #define FATTR4_WORD2_NFS41_MASK (2*FATTR4_WORD2_SUPPATTR_EXCLCREAT - 1UL)
3258 #define FATTR4_WORD2_NFS42_MASK (2*FATTR4_WORD2_MODE_UMASK - 1UL)
3260 static int _nfs4_server_capabilities(struct nfs_server
*server
, struct nfs_fh
*fhandle
)
3262 u32 bitmask
[3] = {}, minorversion
= server
->nfs_client
->cl_minorversion
;
3263 struct nfs4_server_caps_arg args
= {
3267 struct nfs4_server_caps_res res
= {};
3268 struct rpc_message msg
= {
3269 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SERVER_CAPS
],
3276 bitmask
[0] = FATTR4_WORD0_SUPPORTED_ATTRS
|
3277 FATTR4_WORD0_FH_EXPIRE_TYPE
|
3278 FATTR4_WORD0_LINK_SUPPORT
|
3279 FATTR4_WORD0_SYMLINK_SUPPORT
|
3280 FATTR4_WORD0_ACLSUPPORT
;
3282 bitmask
[2] = FATTR4_WORD2_SUPPATTR_EXCLCREAT
;
3284 status
= nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
3286 /* Sanity check the server answers */
3287 switch (minorversion
) {
3289 res
.attr_bitmask
[1] &= FATTR4_WORD1_NFS40_MASK
;
3290 res
.attr_bitmask
[2] = 0;
3293 res
.attr_bitmask
[2] &= FATTR4_WORD2_NFS41_MASK
;
3296 res
.attr_bitmask
[2] &= FATTR4_WORD2_NFS42_MASK
;
3298 memcpy(server
->attr_bitmask
, res
.attr_bitmask
, sizeof(server
->attr_bitmask
));
3299 server
->caps
&= ~(NFS_CAP_ACLS
|NFS_CAP_HARDLINKS
|
3300 NFS_CAP_SYMLINKS
|NFS_CAP_FILEID
|
3301 NFS_CAP_MODE
|NFS_CAP_NLINK
|NFS_CAP_OWNER
|
3302 NFS_CAP_OWNER_GROUP
|NFS_CAP_ATIME
|
3303 NFS_CAP_CTIME
|NFS_CAP_MTIME
|
3304 NFS_CAP_SECURITY_LABEL
);
3305 if (res
.attr_bitmask
[0] & FATTR4_WORD0_ACL
&&
3306 res
.acl_bitmask
& ACL4_SUPPORT_ALLOW_ACL
)
3307 server
->caps
|= NFS_CAP_ACLS
;
3308 if (res
.has_links
!= 0)
3309 server
->caps
|= NFS_CAP_HARDLINKS
;
3310 if (res
.has_symlinks
!= 0)
3311 server
->caps
|= NFS_CAP_SYMLINKS
;
3312 if (res
.attr_bitmask
[0] & FATTR4_WORD0_FILEID
)
3313 server
->caps
|= NFS_CAP_FILEID
;
3314 if (res
.attr_bitmask
[1] & FATTR4_WORD1_MODE
)
3315 server
->caps
|= NFS_CAP_MODE
;
3316 if (res
.attr_bitmask
[1] & FATTR4_WORD1_NUMLINKS
)
3317 server
->caps
|= NFS_CAP_NLINK
;
3318 if (res
.attr_bitmask
[1] & FATTR4_WORD1_OWNER
)
3319 server
->caps
|= NFS_CAP_OWNER
;
3320 if (res
.attr_bitmask
[1] & FATTR4_WORD1_OWNER_GROUP
)
3321 server
->caps
|= NFS_CAP_OWNER_GROUP
;
3322 if (res
.attr_bitmask
[1] & FATTR4_WORD1_TIME_ACCESS
)
3323 server
->caps
|= NFS_CAP_ATIME
;
3324 if (res
.attr_bitmask
[1] & FATTR4_WORD1_TIME_METADATA
)
3325 server
->caps
|= NFS_CAP_CTIME
;
3326 if (res
.attr_bitmask
[1] & FATTR4_WORD1_TIME_MODIFY
)
3327 server
->caps
|= NFS_CAP_MTIME
;
3328 #ifdef CONFIG_NFS_V4_SECURITY_LABEL
3329 if (res
.attr_bitmask
[2] & FATTR4_WORD2_SECURITY_LABEL
)
3330 server
->caps
|= NFS_CAP_SECURITY_LABEL
;
3332 memcpy(server
->attr_bitmask_nl
, res
.attr_bitmask
,
3333 sizeof(server
->attr_bitmask
));
3334 server
->attr_bitmask_nl
[2] &= ~FATTR4_WORD2_SECURITY_LABEL
;
3336 memcpy(server
->cache_consistency_bitmask
, res
.attr_bitmask
, sizeof(server
->cache_consistency_bitmask
));
3337 server
->cache_consistency_bitmask
[0] &= FATTR4_WORD0_CHANGE
|FATTR4_WORD0_SIZE
;
3338 server
->cache_consistency_bitmask
[1] &= FATTR4_WORD1_TIME_METADATA
|FATTR4_WORD1_TIME_MODIFY
;
3339 server
->cache_consistency_bitmask
[2] = 0;
3341 /* Avoid a regression due to buggy server */
3342 for (i
= 0; i
< ARRAY_SIZE(res
.exclcreat_bitmask
); i
++)
3343 res
.exclcreat_bitmask
[i
] &= res
.attr_bitmask
[i
];
3344 memcpy(server
->exclcreat_bitmask
, res
.exclcreat_bitmask
,
3345 sizeof(server
->exclcreat_bitmask
));
3347 server
->acl_bitmask
= res
.acl_bitmask
;
3348 server
->fh_expire_type
= res
.fh_expire_type
;
3354 int nfs4_server_capabilities(struct nfs_server
*server
, struct nfs_fh
*fhandle
)
3356 struct nfs4_exception exception
= { };
3359 err
= nfs4_handle_exception(server
,
3360 _nfs4_server_capabilities(server
, fhandle
),
3362 } while (exception
.retry
);
3366 static int _nfs4_lookup_root(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
3367 struct nfs_fsinfo
*info
)
3370 struct nfs4_lookup_root_arg args
= {
3373 struct nfs4_lookup_res res
= {
3375 .fattr
= info
->fattr
,
3378 struct rpc_message msg
= {
3379 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOOKUP_ROOT
],
3384 bitmask
[0] = nfs4_fattr_bitmap
[0];
3385 bitmask
[1] = nfs4_fattr_bitmap
[1];
3387 * Process the label in the upcoming getfattr
3389 bitmask
[2] = nfs4_fattr_bitmap
[2] & ~FATTR4_WORD2_SECURITY_LABEL
;
3391 nfs_fattr_init(info
->fattr
);
3392 return nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
3395 static int nfs4_lookup_root(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
3396 struct nfs_fsinfo
*info
)
3398 struct nfs4_exception exception
= { };
3401 err
= _nfs4_lookup_root(server
, fhandle
, info
);
3402 trace_nfs4_lookup_root(server
, fhandle
, info
->fattr
, err
);
3405 case -NFS4ERR_WRONGSEC
:
3408 err
= nfs4_handle_exception(server
, err
, &exception
);
3410 } while (exception
.retry
);
3415 static int nfs4_lookup_root_sec(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
3416 struct nfs_fsinfo
*info
, rpc_authflavor_t flavor
)
3418 struct rpc_auth_create_args auth_args
= {
3419 .pseudoflavor
= flavor
,
3421 struct rpc_auth
*auth
;
3423 auth
= rpcauth_create(&auth_args
, server
->client
);
3426 return nfs4_lookup_root(server
, fhandle
, info
);
3430 * Retry pseudoroot lookup with various security flavors. We do this when:
3432 * NFSv4.0: the PUTROOTFH operation returns NFS4ERR_WRONGSEC
3433 * NFSv4.1: the server does not support the SECINFO_NO_NAME operation
3435 * Returns zero on success, or a negative NFS4ERR value, or a
3436 * negative errno value.
3438 static int nfs4_find_root_sec(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
3439 struct nfs_fsinfo
*info
)
3441 /* Per 3530bis 15.33.5 */
3442 static const rpc_authflavor_t flav_array
[] = {
3446 RPC_AUTH_UNIX
, /* courtesy */
3449 int status
= -EPERM
;
3452 if (server
->auth_info
.flavor_len
> 0) {
3453 /* try each flavor specified by user */
3454 for (i
= 0; i
< server
->auth_info
.flavor_len
; i
++) {
3455 status
= nfs4_lookup_root_sec(server
, fhandle
, info
,
3456 server
->auth_info
.flavors
[i
]);
3457 if (status
== -NFS4ERR_WRONGSEC
|| status
== -EACCES
)
3462 /* no flavors specified by user, try default list */
3463 for (i
= 0; i
< ARRAY_SIZE(flav_array
); i
++) {
3464 status
= nfs4_lookup_root_sec(server
, fhandle
, info
,
3466 if (status
== -NFS4ERR_WRONGSEC
|| status
== -EACCES
)
3473 * -EACCESS could mean that the user doesn't have correct permissions
3474 * to access the mount. It could also mean that we tried to mount
3475 * with a gss auth flavor, but rpc.gssd isn't running. Either way,
3476 * existing mount programs don't handle -EACCES very well so it should
3477 * be mapped to -EPERM instead.
3479 if (status
== -EACCES
)
3485 * nfs4_proc_get_rootfh - get file handle for server's pseudoroot
3486 * @server: initialized nfs_server handle
3487 * @fhandle: we fill in the pseudo-fs root file handle
3488 * @info: we fill in an FSINFO struct
3489 * @auth_probe: probe the auth flavours
3491 * Returns zero on success, or a negative errno.
3493 int nfs4_proc_get_rootfh(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
3494 struct nfs_fsinfo
*info
,
3500 status
= nfs4_lookup_root(server
, fhandle
, info
);
3502 if (auth_probe
|| status
== NFS4ERR_WRONGSEC
)
3503 status
= server
->nfs_client
->cl_mvops
->find_root_sec(server
,
3507 status
= nfs4_server_capabilities(server
, fhandle
);
3509 status
= nfs4_do_fsinfo(server
, fhandle
, info
);
3511 return nfs4_map_errors(status
);
3514 static int nfs4_proc_get_root(struct nfs_server
*server
, struct nfs_fh
*mntfh
,
3515 struct nfs_fsinfo
*info
)
3518 struct nfs_fattr
*fattr
= info
->fattr
;
3519 struct nfs4_label
*label
= NULL
;
3521 error
= nfs4_server_capabilities(server
, mntfh
);
3523 dprintk("nfs4_get_root: getcaps error = %d\n", -error
);
3527 label
= nfs4_label_alloc(server
, GFP_KERNEL
);
3529 return PTR_ERR(label
);
3531 error
= nfs4_proc_getattr(server
, mntfh
, fattr
, label
);
3533 dprintk("nfs4_get_root: getattr error = %d\n", -error
);
3534 goto err_free_label
;
3537 if (fattr
->valid
& NFS_ATTR_FATTR_FSID
&&
3538 !nfs_fsid_equal(&server
->fsid
, &fattr
->fsid
))
3539 memcpy(&server
->fsid
, &fattr
->fsid
, sizeof(server
->fsid
));
3542 nfs4_label_free(label
);
3548 * Get locations and (maybe) other attributes of a referral.
3549 * Note that we'll actually follow the referral later when
3550 * we detect fsid mismatch in inode revalidation
3552 static int nfs4_get_referral(struct rpc_clnt
*client
, struct inode
*dir
,
3553 const struct qstr
*name
, struct nfs_fattr
*fattr
,
3554 struct nfs_fh
*fhandle
)
3556 int status
= -ENOMEM
;
3557 struct page
*page
= NULL
;
3558 struct nfs4_fs_locations
*locations
= NULL
;
3560 page
= alloc_page(GFP_KERNEL
);
3563 locations
= kmalloc(sizeof(struct nfs4_fs_locations
), GFP_KERNEL
);
3564 if (locations
== NULL
)
3567 status
= nfs4_proc_fs_locations(client
, dir
, name
, locations
, page
);
3572 * If the fsid didn't change, this is a migration event, not a
3573 * referral. Cause us to drop into the exception handler, which
3574 * will kick off migration recovery.
3576 if (nfs_fsid_equal(&NFS_SERVER(dir
)->fsid
, &locations
->fattr
.fsid
)) {
3577 dprintk("%s: server did not return a different fsid for"
3578 " a referral at %s\n", __func__
, name
->name
);
3579 status
= -NFS4ERR_MOVED
;
3582 /* Fixup attributes for the nfs_lookup() call to nfs_fhget() */
3583 nfs_fixup_referral_attributes(&locations
->fattr
);
3585 /* replace the lookup nfs_fattr with the locations nfs_fattr */
3586 memcpy(fattr
, &locations
->fattr
, sizeof(struct nfs_fattr
));
3587 memset(fhandle
, 0, sizeof(struct nfs_fh
));
3595 static int _nfs4_proc_getattr(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
3596 struct nfs_fattr
*fattr
, struct nfs4_label
*label
)
3598 struct nfs4_getattr_arg args
= {
3600 .bitmask
= server
->attr_bitmask
,
3602 struct nfs4_getattr_res res
= {
3607 struct rpc_message msg
= {
3608 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GETATTR
],
3613 args
.bitmask
= nfs4_bitmask(server
, label
);
3615 nfs_fattr_init(fattr
);
3616 return nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
3619 static int nfs4_proc_getattr(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
3620 struct nfs_fattr
*fattr
, struct nfs4_label
*label
)
3622 struct nfs4_exception exception
= { };
3625 err
= _nfs4_proc_getattr(server
, fhandle
, fattr
, label
);
3626 trace_nfs4_getattr(server
, fhandle
, fattr
, err
);
3627 err
= nfs4_handle_exception(server
, err
,
3629 } while (exception
.retry
);
3634 * The file is not closed if it is opened due to the a request to change
3635 * the size of the file. The open call will not be needed once the
3636 * VFS layer lookup-intents are implemented.
3638 * Close is called when the inode is destroyed.
3639 * If we haven't opened the file for O_WRONLY, we
3640 * need to in the size_change case to obtain a stateid.
3643 * Because OPEN is always done by name in nfsv4, it is
3644 * possible that we opened a different file by the same
3645 * name. We can recognize this race condition, but we
3646 * can't do anything about it besides returning an error.
3648 * This will be fixed with VFS changes (lookup-intent).
3651 nfs4_proc_setattr(struct dentry
*dentry
, struct nfs_fattr
*fattr
,
3652 struct iattr
*sattr
)
3654 struct inode
*inode
= d_inode(dentry
);
3655 struct rpc_cred
*cred
= NULL
;
3656 struct nfs_open_context
*ctx
= NULL
;
3657 struct nfs4_label
*label
= NULL
;
3660 if (pnfs_ld_layoutret_on_setattr(inode
) &&
3661 sattr
->ia_valid
& ATTR_SIZE
&&
3662 sattr
->ia_size
< i_size_read(inode
))
3663 pnfs_commit_and_return_layout(inode
);
3665 nfs_fattr_init(fattr
);
3667 /* Deal with open(O_TRUNC) */
3668 if (sattr
->ia_valid
& ATTR_OPEN
)
3669 sattr
->ia_valid
&= ~(ATTR_MTIME
|ATTR_CTIME
);
3671 /* Optimization: if the end result is no change, don't RPC */
3672 if ((sattr
->ia_valid
& ~(ATTR_FILE
|ATTR_OPEN
)) == 0)
3675 /* Search for an existing open(O_WRITE) file */
3676 if (sattr
->ia_valid
& ATTR_FILE
) {
3678 ctx
= nfs_file_open_context(sattr
->ia_file
);
3683 label
= nfs4_label_alloc(NFS_SERVER(inode
), GFP_KERNEL
);
3685 return PTR_ERR(label
);
3687 status
= nfs4_do_setattr(inode
, cred
, fattr
, sattr
, ctx
, NULL
, label
);
3689 nfs_setattr_update_inode(inode
, sattr
, fattr
);
3690 nfs_setsecurity(inode
, fattr
, label
);
3692 nfs4_label_free(label
);
3696 static int _nfs4_proc_lookup(struct rpc_clnt
*clnt
, struct inode
*dir
,
3697 const struct qstr
*name
, struct nfs_fh
*fhandle
,
3698 struct nfs_fattr
*fattr
, struct nfs4_label
*label
)
3700 struct nfs_server
*server
= NFS_SERVER(dir
);
3702 struct nfs4_lookup_arg args
= {
3703 .bitmask
= server
->attr_bitmask
,
3704 .dir_fh
= NFS_FH(dir
),
3707 struct nfs4_lookup_res res
= {
3713 struct rpc_message msg
= {
3714 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOOKUP
],
3719 args
.bitmask
= nfs4_bitmask(server
, label
);
3721 nfs_fattr_init(fattr
);
3723 dprintk("NFS call lookup %s\n", name
->name
);
3724 status
= nfs4_call_sync(clnt
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
3725 dprintk("NFS reply lookup: %d\n", status
);
3729 static void nfs_fixup_secinfo_attributes(struct nfs_fattr
*fattr
)
3731 fattr
->valid
|= NFS_ATTR_FATTR_TYPE
| NFS_ATTR_FATTR_MODE
|
3732 NFS_ATTR_FATTR_NLINK
| NFS_ATTR_FATTR_MOUNTPOINT
;
3733 fattr
->mode
= S_IFDIR
| S_IRUGO
| S_IXUGO
;
3737 static int nfs4_proc_lookup_common(struct rpc_clnt
**clnt
, struct inode
*dir
,
3738 const struct qstr
*name
, struct nfs_fh
*fhandle
,
3739 struct nfs_fattr
*fattr
, struct nfs4_label
*label
)
3741 struct nfs4_exception exception
= { };
3742 struct rpc_clnt
*client
= *clnt
;
3745 err
= _nfs4_proc_lookup(client
, dir
, name
, fhandle
, fattr
, label
);
3746 trace_nfs4_lookup(dir
, name
, err
);
3748 case -NFS4ERR_BADNAME
:
3751 case -NFS4ERR_MOVED
:
3752 err
= nfs4_get_referral(client
, dir
, name
, fattr
, fhandle
);
3753 if (err
== -NFS4ERR_MOVED
)
3754 err
= nfs4_handle_exception(NFS_SERVER(dir
), err
, &exception
);
3756 case -NFS4ERR_WRONGSEC
:
3758 if (client
!= *clnt
)
3760 client
= nfs4_negotiate_security(client
, dir
, name
);
3762 return PTR_ERR(client
);
3764 exception
.retry
= 1;
3767 err
= nfs4_handle_exception(NFS_SERVER(dir
), err
, &exception
);
3769 } while (exception
.retry
);
3774 else if (client
!= *clnt
)
3775 rpc_shutdown_client(client
);
3780 static int nfs4_proc_lookup(struct inode
*dir
, const struct qstr
*name
,
3781 struct nfs_fh
*fhandle
, struct nfs_fattr
*fattr
,
3782 struct nfs4_label
*label
)
3785 struct rpc_clnt
*client
= NFS_CLIENT(dir
);
3787 status
= nfs4_proc_lookup_common(&client
, dir
, name
, fhandle
, fattr
, label
);
3788 if (client
!= NFS_CLIENT(dir
)) {
3789 rpc_shutdown_client(client
);
3790 nfs_fixup_secinfo_attributes(fattr
);
3796 nfs4_proc_lookup_mountpoint(struct inode
*dir
, const struct qstr
*name
,
3797 struct nfs_fh
*fhandle
, struct nfs_fattr
*fattr
)
3799 struct rpc_clnt
*client
= NFS_CLIENT(dir
);
3802 status
= nfs4_proc_lookup_common(&client
, dir
, name
, fhandle
, fattr
, NULL
);
3804 return ERR_PTR(status
);
3805 return (client
== NFS_CLIENT(dir
)) ? rpc_clone_client(client
) : client
;
3808 static int _nfs4_proc_access(struct inode
*inode
, struct nfs_access_entry
*entry
)
3810 struct nfs_server
*server
= NFS_SERVER(inode
);
3811 struct nfs4_accessargs args
= {
3812 .fh
= NFS_FH(inode
),
3813 .bitmask
= server
->cache_consistency_bitmask
,
3815 struct nfs4_accessres res
= {
3818 struct rpc_message msg
= {
3819 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_ACCESS
],
3822 .rpc_cred
= entry
->cred
,
3824 int mode
= entry
->mask
;
3828 * Determine which access bits we want to ask for...
3830 if (mode
& MAY_READ
)
3831 args
.access
|= NFS4_ACCESS_READ
;
3832 if (S_ISDIR(inode
->i_mode
)) {
3833 if (mode
& MAY_WRITE
)
3834 args
.access
|= NFS4_ACCESS_MODIFY
| NFS4_ACCESS_EXTEND
| NFS4_ACCESS_DELETE
;
3835 if (mode
& MAY_EXEC
)
3836 args
.access
|= NFS4_ACCESS_LOOKUP
;
3838 if (mode
& MAY_WRITE
)
3839 args
.access
|= NFS4_ACCESS_MODIFY
| NFS4_ACCESS_EXTEND
;
3840 if (mode
& MAY_EXEC
)
3841 args
.access
|= NFS4_ACCESS_EXECUTE
;
3844 res
.fattr
= nfs_alloc_fattr();
3845 if (res
.fattr
== NULL
)
3848 status
= nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
3850 nfs_access_set_mask(entry
, res
.access
);
3851 nfs_refresh_inode(inode
, res
.fattr
);
3853 nfs_free_fattr(res
.fattr
);
3857 static int nfs4_proc_access(struct inode
*inode
, struct nfs_access_entry
*entry
)
3859 struct nfs4_exception exception
= { };
3862 err
= _nfs4_proc_access(inode
, entry
);
3863 trace_nfs4_access(inode
, err
);
3864 err
= nfs4_handle_exception(NFS_SERVER(inode
), err
,
3866 } while (exception
.retry
);
3871 * TODO: For the time being, we don't try to get any attributes
3872 * along with any of the zero-copy operations READ, READDIR,
3875 * In the case of the first three, we want to put the GETATTR
3876 * after the read-type operation -- this is because it is hard
3877 * to predict the length of a GETATTR response in v4, and thus
3878 * align the READ data correctly. This means that the GETATTR
3879 * may end up partially falling into the page cache, and we should
3880 * shift it into the 'tail' of the xdr_buf before processing.
3881 * To do this efficiently, we need to know the total length
3882 * of data received, which doesn't seem to be available outside
3885 * In the case of WRITE, we also want to put the GETATTR after
3886 * the operation -- in this case because we want to make sure
3887 * we get the post-operation mtime and size.
3889 * Both of these changes to the XDR layer would in fact be quite
3890 * minor, but I decided to leave them for a subsequent patch.
3892 static int _nfs4_proc_readlink(struct inode
*inode
, struct page
*page
,
3893 unsigned int pgbase
, unsigned int pglen
)
3895 struct nfs4_readlink args
= {
3896 .fh
= NFS_FH(inode
),
3901 struct nfs4_readlink_res res
;
3902 struct rpc_message msg
= {
3903 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_READLINK
],
3908 return nfs4_call_sync(NFS_SERVER(inode
)->client
, NFS_SERVER(inode
), &msg
, &args
.seq_args
, &res
.seq_res
, 0);
3911 static int nfs4_proc_readlink(struct inode
*inode
, struct page
*page
,
3912 unsigned int pgbase
, unsigned int pglen
)
3914 struct nfs4_exception exception
= { };
3917 err
= _nfs4_proc_readlink(inode
, page
, pgbase
, pglen
);
3918 trace_nfs4_readlink(inode
, err
);
3919 err
= nfs4_handle_exception(NFS_SERVER(inode
), err
,
3921 } while (exception
.retry
);
3926 * This is just for mknod. open(O_CREAT) will always do ->open_context().
3929 nfs4_proc_create(struct inode
*dir
, struct dentry
*dentry
, struct iattr
*sattr
,
3932 struct nfs_server
*server
= NFS_SERVER(dir
);
3933 struct nfs4_label l
, *ilabel
= NULL
;
3934 struct nfs_open_context
*ctx
;
3935 struct nfs4_state
*state
;
3938 ctx
= alloc_nfs_open_context(dentry
, FMODE_READ
, NULL
);
3940 return PTR_ERR(ctx
);
3942 ilabel
= nfs4_label_init_security(dir
, dentry
, sattr
, &l
);
3944 if (!(server
->attr_bitmask
[2] & FATTR4_WORD2_MODE_UMASK
))
3945 sattr
->ia_mode
&= ~current_umask();
3946 state
= nfs4_do_open(dir
, ctx
, flags
, sattr
, ilabel
, NULL
);
3947 if (IS_ERR(state
)) {
3948 status
= PTR_ERR(state
);
3952 nfs4_label_release_security(ilabel
);
3953 put_nfs_open_context(ctx
);
3957 static int _nfs4_proc_remove(struct inode
*dir
, const struct qstr
*name
)
3959 struct nfs_server
*server
= NFS_SERVER(dir
);
3960 struct nfs_removeargs args
= {
3964 struct nfs_removeres res
= {
3967 struct rpc_message msg
= {
3968 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_REMOVE
],
3972 unsigned long timestamp
= jiffies
;
3975 status
= nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 1);
3977 update_changeattr(dir
, &res
.cinfo
, timestamp
);
3981 static int nfs4_proc_remove(struct inode
*dir
, const struct qstr
*name
)
3983 struct nfs4_exception exception
= { };
3986 err
= _nfs4_proc_remove(dir
, name
);
3987 trace_nfs4_remove(dir
, name
, err
);
3988 err
= nfs4_handle_exception(NFS_SERVER(dir
), err
,
3990 } while (exception
.retry
);
3994 static void nfs4_proc_unlink_setup(struct rpc_message
*msg
, struct inode
*dir
)
3996 struct nfs_server
*server
= NFS_SERVER(dir
);
3997 struct nfs_removeargs
*args
= msg
->rpc_argp
;
3998 struct nfs_removeres
*res
= msg
->rpc_resp
;
4000 res
->server
= server
;
4001 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_REMOVE
];
4002 nfs4_init_sequence(&args
->seq_args
, &res
->seq_res
, 1);
4004 nfs_fattr_init(res
->dir_attr
);
4007 static void nfs4_proc_unlink_rpc_prepare(struct rpc_task
*task
, struct nfs_unlinkdata
*data
)
4009 nfs4_setup_sequence(NFS_SB(data
->dentry
->d_sb
)->nfs_client
,
4010 &data
->args
.seq_args
,
4015 static int nfs4_proc_unlink_done(struct rpc_task
*task
, struct inode
*dir
)
4017 struct nfs_unlinkdata
*data
= task
->tk_calldata
;
4018 struct nfs_removeres
*res
= &data
->res
;
4020 if (!nfs4_sequence_done(task
, &res
->seq_res
))
4022 if (nfs4_async_handle_error(task
, res
->server
, NULL
,
4023 &data
->timeout
) == -EAGAIN
)
4025 if (task
->tk_status
== 0)
4026 update_changeattr(dir
, &res
->cinfo
, res
->dir_attr
->time_start
);
4030 static void nfs4_proc_rename_setup(struct rpc_message
*msg
, struct inode
*dir
)
4032 struct nfs_server
*server
= NFS_SERVER(dir
);
4033 struct nfs_renameargs
*arg
= msg
->rpc_argp
;
4034 struct nfs_renameres
*res
= msg
->rpc_resp
;
4036 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RENAME
];
4037 res
->server
= server
;
4038 nfs4_init_sequence(&arg
->seq_args
, &res
->seq_res
, 1);
4041 static void nfs4_proc_rename_rpc_prepare(struct rpc_task
*task
, struct nfs_renamedata
*data
)
4043 nfs4_setup_sequence(NFS_SERVER(data
->old_dir
)->nfs_client
,
4044 &data
->args
.seq_args
,
4049 static int nfs4_proc_rename_done(struct rpc_task
*task
, struct inode
*old_dir
,
4050 struct inode
*new_dir
)
4052 struct nfs_renamedata
*data
= task
->tk_calldata
;
4053 struct nfs_renameres
*res
= &data
->res
;
4055 if (!nfs4_sequence_done(task
, &res
->seq_res
))
4057 if (nfs4_async_handle_error(task
, res
->server
, NULL
, &data
->timeout
) == -EAGAIN
)
4060 if (task
->tk_status
== 0) {
4061 update_changeattr(old_dir
, &res
->old_cinfo
, res
->old_fattr
->time_start
);
4062 if (new_dir
!= old_dir
)
4063 update_changeattr(new_dir
, &res
->new_cinfo
, res
->new_fattr
->time_start
);
4068 static int _nfs4_proc_link(struct inode
*inode
, struct inode
*dir
, const struct qstr
*name
)
4070 struct nfs_server
*server
= NFS_SERVER(inode
);
4071 struct nfs4_link_arg arg
= {
4072 .fh
= NFS_FH(inode
),
4073 .dir_fh
= NFS_FH(dir
),
4075 .bitmask
= server
->attr_bitmask
,
4077 struct nfs4_link_res res
= {
4081 struct rpc_message msg
= {
4082 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LINK
],
4086 int status
= -ENOMEM
;
4088 res
.fattr
= nfs_alloc_fattr();
4089 if (res
.fattr
== NULL
)
4092 res
.label
= nfs4_label_alloc(server
, GFP_KERNEL
);
4093 if (IS_ERR(res
.label
)) {
4094 status
= PTR_ERR(res
.label
);
4097 arg
.bitmask
= nfs4_bitmask(server
, res
.label
);
4099 status
= nfs4_call_sync(server
->client
, server
, &msg
, &arg
.seq_args
, &res
.seq_res
, 1);
4101 update_changeattr(dir
, &res
.cinfo
, res
.fattr
->time_start
);
4102 status
= nfs_post_op_update_inode(inode
, res
.fattr
);
4104 nfs_setsecurity(inode
, res
.fattr
, res
.label
);
4108 nfs4_label_free(res
.label
);
4111 nfs_free_fattr(res
.fattr
);
4115 static int nfs4_proc_link(struct inode
*inode
, struct inode
*dir
, const struct qstr
*name
)
4117 struct nfs4_exception exception
= { };
4120 err
= nfs4_handle_exception(NFS_SERVER(inode
),
4121 _nfs4_proc_link(inode
, dir
, name
),
4123 } while (exception
.retry
);
4127 struct nfs4_createdata
{
4128 struct rpc_message msg
;
4129 struct nfs4_create_arg arg
;
4130 struct nfs4_create_res res
;
4132 struct nfs_fattr fattr
;
4133 struct nfs4_label
*label
;
4136 static struct nfs4_createdata
*nfs4_alloc_createdata(struct inode
*dir
,
4137 const struct qstr
*name
, struct iattr
*sattr
, u32 ftype
)
4139 struct nfs4_createdata
*data
;
4141 data
= kzalloc(sizeof(*data
), GFP_KERNEL
);
4143 struct nfs_server
*server
= NFS_SERVER(dir
);
4145 data
->label
= nfs4_label_alloc(server
, GFP_KERNEL
);
4146 if (IS_ERR(data
->label
))
4149 data
->msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_CREATE
];
4150 data
->msg
.rpc_argp
= &data
->arg
;
4151 data
->msg
.rpc_resp
= &data
->res
;
4152 data
->arg
.dir_fh
= NFS_FH(dir
);
4153 data
->arg
.server
= server
;
4154 data
->arg
.name
= name
;
4155 data
->arg
.attrs
= sattr
;
4156 data
->arg
.ftype
= ftype
;
4157 data
->arg
.bitmask
= nfs4_bitmask(server
, data
->label
);
4158 data
->arg
.umask
= current_umask();
4159 data
->res
.server
= server
;
4160 data
->res
.fh
= &data
->fh
;
4161 data
->res
.fattr
= &data
->fattr
;
4162 data
->res
.label
= data
->label
;
4163 nfs_fattr_init(data
->res
.fattr
);
4171 static int nfs4_do_create(struct inode
*dir
, struct dentry
*dentry
, struct nfs4_createdata
*data
)
4173 int status
= nfs4_call_sync(NFS_SERVER(dir
)->client
, NFS_SERVER(dir
), &data
->msg
,
4174 &data
->arg
.seq_args
, &data
->res
.seq_res
, 1);
4176 update_changeattr(dir
, &data
->res
.dir_cinfo
,
4177 data
->res
.fattr
->time_start
);
4178 status
= nfs_instantiate(dentry
, data
->res
.fh
, data
->res
.fattr
, data
->res
.label
);
4183 static void nfs4_free_createdata(struct nfs4_createdata
*data
)
4185 nfs4_label_free(data
->label
);
4189 static int _nfs4_proc_symlink(struct inode
*dir
, struct dentry
*dentry
,
4190 struct page
*page
, unsigned int len
, struct iattr
*sattr
,
4191 struct nfs4_label
*label
)
4193 struct nfs4_createdata
*data
;
4194 int status
= -ENAMETOOLONG
;
4196 if (len
> NFS4_MAXPATHLEN
)
4200 data
= nfs4_alloc_createdata(dir
, &dentry
->d_name
, sattr
, NF4LNK
);
4204 data
->msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SYMLINK
];
4205 data
->arg
.u
.symlink
.pages
= &page
;
4206 data
->arg
.u
.symlink
.len
= len
;
4207 data
->arg
.label
= label
;
4209 status
= nfs4_do_create(dir
, dentry
, data
);
4211 nfs4_free_createdata(data
);
4216 static int nfs4_proc_symlink(struct inode
*dir
, struct dentry
*dentry
,
4217 struct page
*page
, unsigned int len
, struct iattr
*sattr
)
4219 struct nfs4_exception exception
= { };
4220 struct nfs4_label l
, *label
= NULL
;
4223 label
= nfs4_label_init_security(dir
, dentry
, sattr
, &l
);
4226 err
= _nfs4_proc_symlink(dir
, dentry
, page
, len
, sattr
, label
);
4227 trace_nfs4_symlink(dir
, &dentry
->d_name
, err
);
4228 err
= nfs4_handle_exception(NFS_SERVER(dir
), err
,
4230 } while (exception
.retry
);
4232 nfs4_label_release_security(label
);
4236 static int _nfs4_proc_mkdir(struct inode
*dir
, struct dentry
*dentry
,
4237 struct iattr
*sattr
, struct nfs4_label
*label
)
4239 struct nfs4_createdata
*data
;
4240 int status
= -ENOMEM
;
4242 data
= nfs4_alloc_createdata(dir
, &dentry
->d_name
, sattr
, NF4DIR
);
4246 data
->arg
.label
= label
;
4247 status
= nfs4_do_create(dir
, dentry
, data
);
4249 nfs4_free_createdata(data
);
4254 static int nfs4_proc_mkdir(struct inode
*dir
, struct dentry
*dentry
,
4255 struct iattr
*sattr
)
4257 struct nfs_server
*server
= NFS_SERVER(dir
);
4258 struct nfs4_exception exception
= { };
4259 struct nfs4_label l
, *label
= NULL
;
4262 label
= nfs4_label_init_security(dir
, dentry
, sattr
, &l
);
4264 if (!(server
->attr_bitmask
[2] & FATTR4_WORD2_MODE_UMASK
))
4265 sattr
->ia_mode
&= ~current_umask();
4267 err
= _nfs4_proc_mkdir(dir
, dentry
, sattr
, label
);
4268 trace_nfs4_mkdir(dir
, &dentry
->d_name
, err
);
4269 err
= nfs4_handle_exception(NFS_SERVER(dir
), err
,
4271 } while (exception
.retry
);
4272 nfs4_label_release_security(label
);
4277 static int _nfs4_proc_readdir(struct dentry
*dentry
, struct rpc_cred
*cred
,
4278 u64 cookie
, struct page
**pages
, unsigned int count
, int plus
)
4280 struct inode
*dir
= d_inode(dentry
);
4281 struct nfs4_readdir_arg args
= {
4286 .bitmask
= NFS_SERVER(d_inode(dentry
))->attr_bitmask
,
4289 struct nfs4_readdir_res res
;
4290 struct rpc_message msg
= {
4291 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_READDIR
],
4298 dprintk("%s: dentry = %pd2, cookie = %Lu\n", __func__
,
4300 (unsigned long long)cookie
);
4301 nfs4_setup_readdir(cookie
, NFS_I(dir
)->cookieverf
, dentry
, &args
);
4302 res
.pgbase
= args
.pgbase
;
4303 status
= nfs4_call_sync(NFS_SERVER(dir
)->client
, NFS_SERVER(dir
), &msg
, &args
.seq_args
, &res
.seq_res
, 0);
4305 memcpy(NFS_I(dir
)->cookieverf
, res
.verifier
.data
, NFS4_VERIFIER_SIZE
);
4306 status
+= args
.pgbase
;
4309 nfs_invalidate_atime(dir
);
4311 dprintk("%s: returns %d\n", __func__
, status
);
4315 static int nfs4_proc_readdir(struct dentry
*dentry
, struct rpc_cred
*cred
,
4316 u64 cookie
, struct page
**pages
, unsigned int count
, int plus
)
4318 struct nfs4_exception exception
= { };
4321 err
= _nfs4_proc_readdir(dentry
, cred
, cookie
,
4322 pages
, count
, plus
);
4323 trace_nfs4_readdir(d_inode(dentry
), err
);
4324 err
= nfs4_handle_exception(NFS_SERVER(d_inode(dentry
)), err
,
4326 } while (exception
.retry
);
4330 static int _nfs4_proc_mknod(struct inode
*dir
, struct dentry
*dentry
,
4331 struct iattr
*sattr
, struct nfs4_label
*label
, dev_t rdev
)
4333 struct nfs4_createdata
*data
;
4334 int mode
= sattr
->ia_mode
;
4335 int status
= -ENOMEM
;
4337 data
= nfs4_alloc_createdata(dir
, &dentry
->d_name
, sattr
, NF4SOCK
);
4342 data
->arg
.ftype
= NF4FIFO
;
4343 else if (S_ISBLK(mode
)) {
4344 data
->arg
.ftype
= NF4BLK
;
4345 data
->arg
.u
.device
.specdata1
= MAJOR(rdev
);
4346 data
->arg
.u
.device
.specdata2
= MINOR(rdev
);
4348 else if (S_ISCHR(mode
)) {
4349 data
->arg
.ftype
= NF4CHR
;
4350 data
->arg
.u
.device
.specdata1
= MAJOR(rdev
);
4351 data
->arg
.u
.device
.specdata2
= MINOR(rdev
);
4352 } else if (!S_ISSOCK(mode
)) {
4357 data
->arg
.label
= label
;
4358 status
= nfs4_do_create(dir
, dentry
, data
);
4360 nfs4_free_createdata(data
);
4365 static int nfs4_proc_mknod(struct inode
*dir
, struct dentry
*dentry
,
4366 struct iattr
*sattr
, dev_t rdev
)
4368 struct nfs_server
*server
= NFS_SERVER(dir
);
4369 struct nfs4_exception exception
= { };
4370 struct nfs4_label l
, *label
= NULL
;
4373 label
= nfs4_label_init_security(dir
, dentry
, sattr
, &l
);
4375 if (!(server
->attr_bitmask
[2] & FATTR4_WORD2_MODE_UMASK
))
4376 sattr
->ia_mode
&= ~current_umask();
4378 err
= _nfs4_proc_mknod(dir
, dentry
, sattr
, label
, rdev
);
4379 trace_nfs4_mknod(dir
, &dentry
->d_name
, err
);
4380 err
= nfs4_handle_exception(NFS_SERVER(dir
), err
,
4382 } while (exception
.retry
);
4384 nfs4_label_release_security(label
);
4389 static int _nfs4_proc_statfs(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
4390 struct nfs_fsstat
*fsstat
)
4392 struct nfs4_statfs_arg args
= {
4394 .bitmask
= server
->attr_bitmask
,
4396 struct nfs4_statfs_res res
= {
4399 struct rpc_message msg
= {
4400 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_STATFS
],
4405 nfs_fattr_init(fsstat
->fattr
);
4406 return nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
4409 static int nfs4_proc_statfs(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fsstat
*fsstat
)
4411 struct nfs4_exception exception
= { };
4414 err
= nfs4_handle_exception(server
,
4415 _nfs4_proc_statfs(server
, fhandle
, fsstat
),
4417 } while (exception
.retry
);
4421 static int _nfs4_do_fsinfo(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
4422 struct nfs_fsinfo
*fsinfo
)
4424 struct nfs4_fsinfo_arg args
= {
4426 .bitmask
= server
->attr_bitmask
,
4428 struct nfs4_fsinfo_res res
= {
4431 struct rpc_message msg
= {
4432 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_FSINFO
],
4437 return nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
4440 static int nfs4_do_fsinfo(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fsinfo
*fsinfo
)
4442 struct nfs4_exception exception
= { };
4443 unsigned long now
= jiffies
;
4447 err
= _nfs4_do_fsinfo(server
, fhandle
, fsinfo
);
4448 trace_nfs4_fsinfo(server
, fhandle
, fsinfo
->fattr
, err
);
4450 nfs4_set_lease_period(server
->nfs_client
,
4451 fsinfo
->lease_time
* HZ
,
4455 err
= nfs4_handle_exception(server
, err
, &exception
);
4456 } while (exception
.retry
);
4460 static int nfs4_proc_fsinfo(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fsinfo
*fsinfo
)
4464 nfs_fattr_init(fsinfo
->fattr
);
4465 error
= nfs4_do_fsinfo(server
, fhandle
, fsinfo
);
4467 /* block layout checks this! */
4468 server
->pnfs_blksize
= fsinfo
->blksize
;
4469 set_pnfs_layoutdriver(server
, fhandle
, fsinfo
);
4475 static int _nfs4_proc_pathconf(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
4476 struct nfs_pathconf
*pathconf
)
4478 struct nfs4_pathconf_arg args
= {
4480 .bitmask
= server
->attr_bitmask
,
4482 struct nfs4_pathconf_res res
= {
4483 .pathconf
= pathconf
,
4485 struct rpc_message msg
= {
4486 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_PATHCONF
],
4491 /* None of the pathconf attributes are mandatory to implement */
4492 if ((args
.bitmask
[0] & nfs4_pathconf_bitmap
[0]) == 0) {
4493 memset(pathconf
, 0, sizeof(*pathconf
));
4497 nfs_fattr_init(pathconf
->fattr
);
4498 return nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
4501 static int nfs4_proc_pathconf(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
4502 struct nfs_pathconf
*pathconf
)
4504 struct nfs4_exception exception
= { };
4508 err
= nfs4_handle_exception(server
,
4509 _nfs4_proc_pathconf(server
, fhandle
, pathconf
),
4511 } while (exception
.retry
);
4515 int nfs4_set_rw_stateid(nfs4_stateid
*stateid
,
4516 const struct nfs_open_context
*ctx
,
4517 const struct nfs_lock_context
*l_ctx
,
4520 return nfs4_select_rw_stateid(ctx
->state
, fmode
, l_ctx
, stateid
, NULL
);
4522 EXPORT_SYMBOL_GPL(nfs4_set_rw_stateid
);
4524 static bool nfs4_stateid_is_current(nfs4_stateid
*stateid
,
4525 const struct nfs_open_context
*ctx
,
4526 const struct nfs_lock_context
*l_ctx
,
4529 nfs4_stateid current_stateid
;
4531 /* If the current stateid represents a lost lock, then exit */
4532 if (nfs4_set_rw_stateid(¤t_stateid
, ctx
, l_ctx
, fmode
) == -EIO
)
4534 return nfs4_stateid_match(stateid
, ¤t_stateid
);
4537 static bool nfs4_error_stateid_expired(int err
)
4540 case -NFS4ERR_DELEG_REVOKED
:
4541 case -NFS4ERR_ADMIN_REVOKED
:
4542 case -NFS4ERR_BAD_STATEID
:
4543 case -NFS4ERR_STALE_STATEID
:
4544 case -NFS4ERR_OLD_STATEID
:
4545 case -NFS4ERR_OPENMODE
:
4546 case -NFS4ERR_EXPIRED
:
4552 static int nfs4_read_done_cb(struct rpc_task
*task
, struct nfs_pgio_header
*hdr
)
4554 struct nfs_server
*server
= NFS_SERVER(hdr
->inode
);
4556 trace_nfs4_read(hdr
, task
->tk_status
);
4557 if (task
->tk_status
< 0) {
4558 struct nfs4_exception exception
= {
4559 .inode
= hdr
->inode
,
4560 .state
= hdr
->args
.context
->state
,
4561 .stateid
= &hdr
->args
.stateid
,
4563 task
->tk_status
= nfs4_async_handle_exception(task
,
4564 server
, task
->tk_status
, &exception
);
4565 if (exception
.retry
) {
4566 rpc_restart_call_prepare(task
);
4571 if (task
->tk_status
> 0)
4572 renew_lease(server
, hdr
->timestamp
);
4576 static bool nfs4_read_stateid_changed(struct rpc_task
*task
,
4577 struct nfs_pgio_args
*args
)
4580 if (!nfs4_error_stateid_expired(task
->tk_status
) ||
4581 nfs4_stateid_is_current(&args
->stateid
,
4586 rpc_restart_call_prepare(task
);
4590 static int nfs4_read_done(struct rpc_task
*task
, struct nfs_pgio_header
*hdr
)
4593 dprintk("--> %s\n", __func__
);
4595 if (!nfs4_sequence_done(task
, &hdr
->res
.seq_res
))
4597 if (nfs4_read_stateid_changed(task
, &hdr
->args
))
4599 if (task
->tk_status
> 0)
4600 nfs_invalidate_atime(hdr
->inode
);
4601 return hdr
->pgio_done_cb
? hdr
->pgio_done_cb(task
, hdr
) :
4602 nfs4_read_done_cb(task
, hdr
);
4605 static void nfs4_proc_read_setup(struct nfs_pgio_header
*hdr
,
4606 struct rpc_message
*msg
)
4608 hdr
->timestamp
= jiffies
;
4609 if (!hdr
->pgio_done_cb
)
4610 hdr
->pgio_done_cb
= nfs4_read_done_cb
;
4611 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_READ
];
4612 nfs4_init_sequence(&hdr
->args
.seq_args
, &hdr
->res
.seq_res
, 0);
4615 static int nfs4_proc_pgio_rpc_prepare(struct rpc_task
*task
,
4616 struct nfs_pgio_header
*hdr
)
4618 if (nfs4_setup_sequence(NFS_SERVER(hdr
->inode
)->nfs_client
,
4619 &hdr
->args
.seq_args
,
4623 if (nfs4_set_rw_stateid(&hdr
->args
.stateid
, hdr
->args
.context
,
4624 hdr
->args
.lock_context
,
4625 hdr
->rw_mode
) == -EIO
)
4627 if (unlikely(test_bit(NFS_CONTEXT_BAD
, &hdr
->args
.context
->flags
)))
4632 static int nfs4_write_done_cb(struct rpc_task
*task
,
4633 struct nfs_pgio_header
*hdr
)
4635 struct inode
*inode
= hdr
->inode
;
4637 trace_nfs4_write(hdr
, task
->tk_status
);
4638 if (task
->tk_status
< 0) {
4639 struct nfs4_exception exception
= {
4640 .inode
= hdr
->inode
,
4641 .state
= hdr
->args
.context
->state
,
4642 .stateid
= &hdr
->args
.stateid
,
4644 task
->tk_status
= nfs4_async_handle_exception(task
,
4645 NFS_SERVER(inode
), task
->tk_status
,
4647 if (exception
.retry
) {
4648 rpc_restart_call_prepare(task
);
4652 if (task
->tk_status
>= 0) {
4653 renew_lease(NFS_SERVER(inode
), hdr
->timestamp
);
4654 nfs_writeback_update_inode(hdr
);
4659 static bool nfs4_write_stateid_changed(struct rpc_task
*task
,
4660 struct nfs_pgio_args
*args
)
4663 if (!nfs4_error_stateid_expired(task
->tk_status
) ||
4664 nfs4_stateid_is_current(&args
->stateid
,
4669 rpc_restart_call_prepare(task
);
4673 static int nfs4_write_done(struct rpc_task
*task
, struct nfs_pgio_header
*hdr
)
4675 if (!nfs4_sequence_done(task
, &hdr
->res
.seq_res
))
4677 if (nfs4_write_stateid_changed(task
, &hdr
->args
))
4679 return hdr
->pgio_done_cb
? hdr
->pgio_done_cb(task
, hdr
) :
4680 nfs4_write_done_cb(task
, hdr
);
4684 bool nfs4_write_need_cache_consistency_data(struct nfs_pgio_header
*hdr
)
4686 /* Don't request attributes for pNFS or O_DIRECT writes */
4687 if (hdr
->ds_clp
!= NULL
|| hdr
->dreq
!= NULL
)
4689 /* Otherwise, request attributes if and only if we don't hold
4692 return nfs4_have_delegation(hdr
->inode
, FMODE_READ
) == 0;
4695 static void nfs4_proc_write_setup(struct nfs_pgio_header
*hdr
,
4696 struct rpc_message
*msg
)
4698 struct nfs_server
*server
= NFS_SERVER(hdr
->inode
);
4700 if (!nfs4_write_need_cache_consistency_data(hdr
)) {
4701 hdr
->args
.bitmask
= NULL
;
4702 hdr
->res
.fattr
= NULL
;
4704 hdr
->args
.bitmask
= server
->cache_consistency_bitmask
;
4706 if (!hdr
->pgio_done_cb
)
4707 hdr
->pgio_done_cb
= nfs4_write_done_cb
;
4708 hdr
->res
.server
= server
;
4709 hdr
->timestamp
= jiffies
;
4711 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_WRITE
];
4712 nfs4_init_sequence(&hdr
->args
.seq_args
, &hdr
->res
.seq_res
, 1);
4715 static void nfs4_proc_commit_rpc_prepare(struct rpc_task
*task
, struct nfs_commit_data
*data
)
4717 nfs4_setup_sequence(NFS_SERVER(data
->inode
)->nfs_client
,
4718 &data
->args
.seq_args
,
4723 static int nfs4_commit_done_cb(struct rpc_task
*task
, struct nfs_commit_data
*data
)
4725 struct inode
*inode
= data
->inode
;
4727 trace_nfs4_commit(data
, task
->tk_status
);
4728 if (nfs4_async_handle_error(task
, NFS_SERVER(inode
),
4729 NULL
, NULL
) == -EAGAIN
) {
4730 rpc_restart_call_prepare(task
);
4736 static int nfs4_commit_done(struct rpc_task
*task
, struct nfs_commit_data
*data
)
4738 if (!nfs4_sequence_done(task
, &data
->res
.seq_res
))
4740 return data
->commit_done_cb(task
, data
);
4743 static void nfs4_proc_commit_setup(struct nfs_commit_data
*data
, struct rpc_message
*msg
)
4745 struct nfs_server
*server
= NFS_SERVER(data
->inode
);
4747 if (data
->commit_done_cb
== NULL
)
4748 data
->commit_done_cb
= nfs4_commit_done_cb
;
4749 data
->res
.server
= server
;
4750 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_COMMIT
];
4751 nfs4_init_sequence(&data
->args
.seq_args
, &data
->res
.seq_res
, 1);
4754 struct nfs4_renewdata
{
4755 struct nfs_client
*client
;
4756 unsigned long timestamp
;
4760 * nfs4_proc_async_renew(): This is not one of the nfs_rpc_ops; it is a special
4761 * standalone procedure for queueing an asynchronous RENEW.
4763 static void nfs4_renew_release(void *calldata
)
4765 struct nfs4_renewdata
*data
= calldata
;
4766 struct nfs_client
*clp
= data
->client
;
4768 if (atomic_read(&clp
->cl_count
) > 1)
4769 nfs4_schedule_state_renewal(clp
);
4770 nfs_put_client(clp
);
4774 static void nfs4_renew_done(struct rpc_task
*task
, void *calldata
)
4776 struct nfs4_renewdata
*data
= calldata
;
4777 struct nfs_client
*clp
= data
->client
;
4778 unsigned long timestamp
= data
->timestamp
;
4780 trace_nfs4_renew_async(clp
, task
->tk_status
);
4781 switch (task
->tk_status
) {
4784 case -NFS4ERR_LEASE_MOVED
:
4785 nfs4_schedule_lease_moved_recovery(clp
);
4788 /* Unless we're shutting down, schedule state recovery! */
4789 if (test_bit(NFS_CS_RENEWD
, &clp
->cl_res_state
) == 0)
4791 if (task
->tk_status
!= NFS4ERR_CB_PATH_DOWN
) {
4792 nfs4_schedule_lease_recovery(clp
);
4795 nfs4_schedule_path_down_recovery(clp
);
4797 do_renew_lease(clp
, timestamp
);
4800 static const struct rpc_call_ops nfs4_renew_ops
= {
4801 .rpc_call_done
= nfs4_renew_done
,
4802 .rpc_release
= nfs4_renew_release
,
4805 static int nfs4_proc_async_renew(struct nfs_client
*clp
, struct rpc_cred
*cred
, unsigned renew_flags
)
4807 struct rpc_message msg
= {
4808 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RENEW
],
4812 struct nfs4_renewdata
*data
;
4814 if (renew_flags
== 0)
4816 if (!atomic_inc_not_zero(&clp
->cl_count
))
4818 data
= kmalloc(sizeof(*data
), GFP_NOFS
);
4820 nfs_put_client(clp
);
4824 data
->timestamp
= jiffies
;
4825 return rpc_call_async(clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
,
4826 &nfs4_renew_ops
, data
);
4829 static int nfs4_proc_renew(struct nfs_client
*clp
, struct rpc_cred
*cred
)
4831 struct rpc_message msg
= {
4832 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RENEW
],
4836 unsigned long now
= jiffies
;
4839 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
4842 do_renew_lease(clp
, now
);
4846 static inline int nfs4_server_supports_acls(struct nfs_server
*server
)
4848 return server
->caps
& NFS_CAP_ACLS
;
4851 /* Assuming that XATTR_SIZE_MAX is a multiple of PAGE_SIZE, and that
4852 * it's OK to put sizeof(void) * (XATTR_SIZE_MAX/PAGE_SIZE) bytes on
4855 #define NFS4ACL_MAXPAGES DIV_ROUND_UP(XATTR_SIZE_MAX, PAGE_SIZE)
4857 static int buf_to_pages_noslab(const void *buf
, size_t buflen
,
4858 struct page
**pages
)
4860 struct page
*newpage
, **spages
;
4866 len
= min_t(size_t, PAGE_SIZE
, buflen
);
4867 newpage
= alloc_page(GFP_KERNEL
);
4869 if (newpage
== NULL
)
4871 memcpy(page_address(newpage
), buf
, len
);
4876 } while (buflen
!= 0);
4882 __free_page(spages
[rc
-1]);
4886 struct nfs4_cached_acl
{
4892 static void nfs4_set_cached_acl(struct inode
*inode
, struct nfs4_cached_acl
*acl
)
4894 struct nfs_inode
*nfsi
= NFS_I(inode
);
4896 spin_lock(&inode
->i_lock
);
4897 kfree(nfsi
->nfs4_acl
);
4898 nfsi
->nfs4_acl
= acl
;
4899 spin_unlock(&inode
->i_lock
);
4902 static void nfs4_zap_acl_attr(struct inode
*inode
)
4904 nfs4_set_cached_acl(inode
, NULL
);
4907 static inline ssize_t
nfs4_read_cached_acl(struct inode
*inode
, char *buf
, size_t buflen
)
4909 struct nfs_inode
*nfsi
= NFS_I(inode
);
4910 struct nfs4_cached_acl
*acl
;
4913 spin_lock(&inode
->i_lock
);
4914 acl
= nfsi
->nfs4_acl
;
4917 if (buf
== NULL
) /* user is just asking for length */
4919 if (acl
->cached
== 0)
4921 ret
= -ERANGE
; /* see getxattr(2) man page */
4922 if (acl
->len
> buflen
)
4924 memcpy(buf
, acl
->data
, acl
->len
);
4928 spin_unlock(&inode
->i_lock
);
4932 static void nfs4_write_cached_acl(struct inode
*inode
, struct page
**pages
, size_t pgbase
, size_t acl_len
)
4934 struct nfs4_cached_acl
*acl
;
4935 size_t buflen
= sizeof(*acl
) + acl_len
;
4937 if (buflen
<= PAGE_SIZE
) {
4938 acl
= kmalloc(buflen
, GFP_KERNEL
);
4942 _copy_from_pages(acl
->data
, pages
, pgbase
, acl_len
);
4944 acl
= kmalloc(sizeof(*acl
), GFP_KERNEL
);
4951 nfs4_set_cached_acl(inode
, acl
);
4955 * The getxattr API returns the required buffer length when called with a
4956 * NULL buf. The NFSv4 acl tool then calls getxattr again after allocating
4957 * the required buf. On a NULL buf, we send a page of data to the server
4958 * guessing that the ACL request can be serviced by a page. If so, we cache
4959 * up to the page of ACL data, and the 2nd call to getxattr is serviced by
4960 * the cache. If not so, we throw away the page, and cache the required
4961 * length. The next getxattr call will then produce another round trip to
4962 * the server, this time with the input buf of the required size.
4964 static ssize_t
__nfs4_get_acl_uncached(struct inode
*inode
, void *buf
, size_t buflen
)
4966 struct page
*pages
[NFS4ACL_MAXPAGES
+ 1] = {NULL
, };
4967 struct nfs_getaclargs args
= {
4968 .fh
= NFS_FH(inode
),
4972 struct nfs_getaclres res
= {
4975 struct rpc_message msg
= {
4976 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GETACL
],
4980 unsigned int npages
= DIV_ROUND_UP(buflen
, PAGE_SIZE
) + 1;
4981 int ret
= -ENOMEM
, i
;
4983 if (npages
> ARRAY_SIZE(pages
))
4986 for (i
= 0; i
< npages
; i
++) {
4987 pages
[i
] = alloc_page(GFP_KERNEL
);
4992 /* for decoding across pages */
4993 res
.acl_scratch
= alloc_page(GFP_KERNEL
);
4994 if (!res
.acl_scratch
)
4997 args
.acl_len
= npages
* PAGE_SIZE
;
4999 dprintk("%s buf %p buflen %zu npages %d args.acl_len %zu\n",
5000 __func__
, buf
, buflen
, npages
, args
.acl_len
);
5001 ret
= nfs4_call_sync(NFS_SERVER(inode
)->client
, NFS_SERVER(inode
),
5002 &msg
, &args
.seq_args
, &res
.seq_res
, 0);
5006 /* Handle the case where the passed-in buffer is too short */
5007 if (res
.acl_flags
& NFS4_ACL_TRUNC
) {
5008 /* Did the user only issue a request for the acl length? */
5014 nfs4_write_cached_acl(inode
, pages
, res
.acl_data_offset
, res
.acl_len
);
5016 if (res
.acl_len
> buflen
) {
5020 _copy_from_pages(buf
, pages
, res
.acl_data_offset
, res
.acl_len
);
5025 for (i
= 0; i
< npages
; i
++)
5027 __free_page(pages
[i
]);
5028 if (res
.acl_scratch
)
5029 __free_page(res
.acl_scratch
);
5033 static ssize_t
nfs4_get_acl_uncached(struct inode
*inode
, void *buf
, size_t buflen
)
5035 struct nfs4_exception exception
= { };
5038 ret
= __nfs4_get_acl_uncached(inode
, buf
, buflen
);
5039 trace_nfs4_get_acl(inode
, ret
);
5042 ret
= nfs4_handle_exception(NFS_SERVER(inode
), ret
, &exception
);
5043 } while (exception
.retry
);
5047 static ssize_t
nfs4_proc_get_acl(struct inode
*inode
, void *buf
, size_t buflen
)
5049 struct nfs_server
*server
= NFS_SERVER(inode
);
5052 if (!nfs4_server_supports_acls(server
))
5054 ret
= nfs_revalidate_inode(server
, inode
);
5057 if (NFS_I(inode
)->cache_validity
& NFS_INO_INVALID_ACL
)
5058 nfs_zap_acl_cache(inode
);
5059 ret
= nfs4_read_cached_acl(inode
, buf
, buflen
);
5061 /* -ENOENT is returned if there is no ACL or if there is an ACL
5062 * but no cached acl data, just the acl length */
5064 return nfs4_get_acl_uncached(inode
, buf
, buflen
);
5067 static int __nfs4_proc_set_acl(struct inode
*inode
, const void *buf
, size_t buflen
)
5069 struct nfs_server
*server
= NFS_SERVER(inode
);
5070 struct page
*pages
[NFS4ACL_MAXPAGES
];
5071 struct nfs_setaclargs arg
= {
5072 .fh
= NFS_FH(inode
),
5076 struct nfs_setaclres res
;
5077 struct rpc_message msg
= {
5078 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETACL
],
5082 unsigned int npages
= DIV_ROUND_UP(buflen
, PAGE_SIZE
);
5085 if (!nfs4_server_supports_acls(server
))
5087 if (npages
> ARRAY_SIZE(pages
))
5089 i
= buf_to_pages_noslab(buf
, buflen
, arg
.acl_pages
);
5092 nfs4_inode_return_delegation(inode
);
5093 ret
= nfs4_call_sync(server
->client
, server
, &msg
, &arg
.seq_args
, &res
.seq_res
, 1);
5096 * Free each page after tx, so the only ref left is
5097 * held by the network stack
5100 put_page(pages
[i
-1]);
5103 * Acl update can result in inode attribute update.
5104 * so mark the attribute cache invalid.
5106 spin_lock(&inode
->i_lock
);
5107 NFS_I(inode
)->cache_validity
|= NFS_INO_INVALID_ATTR
;
5108 spin_unlock(&inode
->i_lock
);
5109 nfs_access_zap_cache(inode
);
5110 nfs_zap_acl_cache(inode
);
5114 static int nfs4_proc_set_acl(struct inode
*inode
, const void *buf
, size_t buflen
)
5116 struct nfs4_exception exception
= { };
5119 err
= __nfs4_proc_set_acl(inode
, buf
, buflen
);
5120 trace_nfs4_set_acl(inode
, err
);
5121 err
= nfs4_handle_exception(NFS_SERVER(inode
), err
,
5123 } while (exception
.retry
);
5127 #ifdef CONFIG_NFS_V4_SECURITY_LABEL
5128 static int _nfs4_get_security_label(struct inode
*inode
, void *buf
,
5131 struct nfs_server
*server
= NFS_SERVER(inode
);
5132 struct nfs_fattr fattr
;
5133 struct nfs4_label label
= {0, 0, buflen
, buf
};
5135 u32 bitmask
[3] = { 0, 0, FATTR4_WORD2_SECURITY_LABEL
};
5136 struct nfs4_getattr_arg arg
= {
5137 .fh
= NFS_FH(inode
),
5140 struct nfs4_getattr_res res
= {
5145 struct rpc_message msg
= {
5146 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GETATTR
],
5152 nfs_fattr_init(&fattr
);
5154 ret
= nfs4_call_sync(server
->client
, server
, &msg
, &arg
.seq_args
, &res
.seq_res
, 0);
5157 if (!(fattr
.valid
& NFS_ATTR_FATTR_V4_SECURITY_LABEL
))
5159 if (buflen
< label
.len
)
5164 static int nfs4_get_security_label(struct inode
*inode
, void *buf
,
5167 struct nfs4_exception exception
= { };
5170 if (!nfs_server_capable(inode
, NFS_CAP_SECURITY_LABEL
))
5174 err
= _nfs4_get_security_label(inode
, buf
, buflen
);
5175 trace_nfs4_get_security_label(inode
, err
);
5176 err
= nfs4_handle_exception(NFS_SERVER(inode
), err
,
5178 } while (exception
.retry
);
5182 static int _nfs4_do_set_security_label(struct inode
*inode
,
5183 struct nfs4_label
*ilabel
,
5184 struct nfs_fattr
*fattr
,
5185 struct nfs4_label
*olabel
)
5188 struct iattr sattr
= {0};
5189 struct nfs_server
*server
= NFS_SERVER(inode
);
5190 const u32 bitmask
[3] = { 0, 0, FATTR4_WORD2_SECURITY_LABEL
};
5191 struct nfs_setattrargs arg
= {
5192 .fh
= NFS_FH(inode
),
5198 struct nfs_setattrres res
= {
5203 struct rpc_message msg
= {
5204 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETATTR
],
5210 nfs4_stateid_copy(&arg
.stateid
, &zero_stateid
);
5212 status
= nfs4_call_sync(server
->client
, server
, &msg
, &arg
.seq_args
, &res
.seq_res
, 1);
5214 dprintk("%s failed: %d\n", __func__
, status
);
5219 static int nfs4_do_set_security_label(struct inode
*inode
,
5220 struct nfs4_label
*ilabel
,
5221 struct nfs_fattr
*fattr
,
5222 struct nfs4_label
*olabel
)
5224 struct nfs4_exception exception
= { };
5228 err
= _nfs4_do_set_security_label(inode
, ilabel
,
5230 trace_nfs4_set_security_label(inode
, err
);
5231 err
= nfs4_handle_exception(NFS_SERVER(inode
), err
,
5233 } while (exception
.retry
);
5238 nfs4_set_security_label(struct inode
*inode
, const void *buf
, size_t buflen
)
5240 struct nfs4_label ilabel
, *olabel
= NULL
;
5241 struct nfs_fattr fattr
;
5242 struct rpc_cred
*cred
;
5245 if (!nfs_server_capable(inode
, NFS_CAP_SECURITY_LABEL
))
5248 nfs_fattr_init(&fattr
);
5252 ilabel
.label
= (char *)buf
;
5253 ilabel
.len
= buflen
;
5255 cred
= rpc_lookup_cred();
5257 return PTR_ERR(cred
);
5259 olabel
= nfs4_label_alloc(NFS_SERVER(inode
), GFP_KERNEL
);
5260 if (IS_ERR(olabel
)) {
5261 status
= -PTR_ERR(olabel
);
5265 status
= nfs4_do_set_security_label(inode
, &ilabel
, &fattr
, olabel
);
5267 nfs_setsecurity(inode
, &fattr
, olabel
);
5269 nfs4_label_free(olabel
);
5274 #endif /* CONFIG_NFS_V4_SECURITY_LABEL */
5277 static void nfs4_init_boot_verifier(const struct nfs_client
*clp
,
5278 nfs4_verifier
*bootverf
)
5282 if (test_bit(NFS4CLNT_PURGE_STATE
, &clp
->cl_state
)) {
5283 /* An impossible timestamp guarantees this value
5284 * will never match a generated boot time. */
5285 verf
[0] = cpu_to_be32(U32_MAX
);
5286 verf
[1] = cpu_to_be32(U32_MAX
);
5288 struct nfs_net
*nn
= net_generic(clp
->cl_net
, nfs_net_id
);
5289 u64 ns
= ktime_to_ns(nn
->boot_time
);
5291 verf
[0] = cpu_to_be32(ns
>> 32);
5292 verf
[1] = cpu_to_be32(ns
);
5294 memcpy(bootverf
->data
, verf
, sizeof(bootverf
->data
));
5298 nfs4_init_nonuniform_client_string(struct nfs_client
*clp
)
5303 if (clp
->cl_owner_id
!= NULL
)
5307 len
= 14 + strlen(clp
->cl_ipaddr
) + 1 +
5308 strlen(rpc_peeraddr2str(clp
->cl_rpcclient
, RPC_DISPLAY_ADDR
)) +
5310 strlen(rpc_peeraddr2str(clp
->cl_rpcclient
, RPC_DISPLAY_PROTO
)) +
5314 if (len
> NFS4_OPAQUE_LIMIT
+ 1)
5318 * Since this string is allocated at mount time, and held until the
5319 * nfs_client is destroyed, we can use GFP_KERNEL here w/o worrying
5320 * about a memory-reclaim deadlock.
5322 str
= kmalloc(len
, GFP_KERNEL
);
5327 scnprintf(str
, len
, "Linux NFSv4.0 %s/%s %s",
5329 rpc_peeraddr2str(clp
->cl_rpcclient
, RPC_DISPLAY_ADDR
),
5330 rpc_peeraddr2str(clp
->cl_rpcclient
, RPC_DISPLAY_PROTO
));
5333 clp
->cl_owner_id
= str
;
5338 nfs4_init_uniquifier_client_string(struct nfs_client
*clp
)
5343 len
= 10 + 10 + 1 + 10 + 1 +
5344 strlen(nfs4_client_id_uniquifier
) + 1 +
5345 strlen(clp
->cl_rpcclient
->cl_nodename
) + 1;
5347 if (len
> NFS4_OPAQUE_LIMIT
+ 1)
5351 * Since this string is allocated at mount time, and held until the
5352 * nfs_client is destroyed, we can use GFP_KERNEL here w/o worrying
5353 * about a memory-reclaim deadlock.
5355 str
= kmalloc(len
, GFP_KERNEL
);
5359 scnprintf(str
, len
, "Linux NFSv%u.%u %s/%s",
5360 clp
->rpc_ops
->version
, clp
->cl_minorversion
,
5361 nfs4_client_id_uniquifier
,
5362 clp
->cl_rpcclient
->cl_nodename
);
5363 clp
->cl_owner_id
= str
;
5368 nfs4_init_uniform_client_string(struct nfs_client
*clp
)
5373 if (clp
->cl_owner_id
!= NULL
)
5376 if (nfs4_client_id_uniquifier
[0] != '\0')
5377 return nfs4_init_uniquifier_client_string(clp
);
5379 len
= 10 + 10 + 1 + 10 + 1 +
5380 strlen(clp
->cl_rpcclient
->cl_nodename
) + 1;
5382 if (len
> NFS4_OPAQUE_LIMIT
+ 1)
5386 * Since this string is allocated at mount time, and held until the
5387 * nfs_client is destroyed, we can use GFP_KERNEL here w/o worrying
5388 * about a memory-reclaim deadlock.
5390 str
= kmalloc(len
, GFP_KERNEL
);
5394 scnprintf(str
, len
, "Linux NFSv%u.%u %s",
5395 clp
->rpc_ops
->version
, clp
->cl_minorversion
,
5396 clp
->cl_rpcclient
->cl_nodename
);
5397 clp
->cl_owner_id
= str
;
5402 * nfs4_callback_up_net() starts only "tcp" and "tcp6" callback
5403 * services. Advertise one based on the address family of the
5407 nfs4_init_callback_netid(const struct nfs_client
*clp
, char *buf
, size_t len
)
5409 if (strchr(clp
->cl_ipaddr
, ':') != NULL
)
5410 return scnprintf(buf
, len
, "tcp6");
5412 return scnprintf(buf
, len
, "tcp");
5415 static void nfs4_setclientid_done(struct rpc_task
*task
, void *calldata
)
5417 struct nfs4_setclientid
*sc
= calldata
;
5419 if (task
->tk_status
== 0)
5420 sc
->sc_cred
= get_rpccred(task
->tk_rqstp
->rq_cred
);
5423 static const struct rpc_call_ops nfs4_setclientid_ops
= {
5424 .rpc_call_done
= nfs4_setclientid_done
,
5428 * nfs4_proc_setclientid - Negotiate client ID
5429 * @clp: state data structure
5430 * @program: RPC program for NFSv4 callback service
5431 * @port: IP port number for NFS4 callback service
5432 * @cred: RPC credential to use for this call
5433 * @res: where to place the result
5435 * Returns zero, a negative errno, or a negative NFS4ERR status code.
5437 int nfs4_proc_setclientid(struct nfs_client
*clp
, u32 program
,
5438 unsigned short port
, struct rpc_cred
*cred
,
5439 struct nfs4_setclientid_res
*res
)
5441 nfs4_verifier sc_verifier
;
5442 struct nfs4_setclientid setclientid
= {
5443 .sc_verifier
= &sc_verifier
,
5447 struct rpc_message msg
= {
5448 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETCLIENTID
],
5449 .rpc_argp
= &setclientid
,
5453 struct rpc_task
*task
;
5454 struct rpc_task_setup task_setup_data
= {
5455 .rpc_client
= clp
->cl_rpcclient
,
5456 .rpc_message
= &msg
,
5457 .callback_ops
= &nfs4_setclientid_ops
,
5458 .callback_data
= &setclientid
,
5459 .flags
= RPC_TASK_TIMEOUT
,
5463 /* nfs_client_id4 */
5464 nfs4_init_boot_verifier(clp
, &sc_verifier
);
5466 if (test_bit(NFS_CS_MIGRATION
, &clp
->cl_flags
))
5467 status
= nfs4_init_uniform_client_string(clp
);
5469 status
= nfs4_init_nonuniform_client_string(clp
);
5475 setclientid
.sc_netid_len
=
5476 nfs4_init_callback_netid(clp
,
5477 setclientid
.sc_netid
,
5478 sizeof(setclientid
.sc_netid
));
5479 setclientid
.sc_uaddr_len
= scnprintf(setclientid
.sc_uaddr
,
5480 sizeof(setclientid
.sc_uaddr
), "%s.%u.%u",
5481 clp
->cl_ipaddr
, port
>> 8, port
& 255);
5483 dprintk("NFS call setclientid auth=%s, '%s'\n",
5484 clp
->cl_rpcclient
->cl_auth
->au_ops
->au_name
,
5486 task
= rpc_run_task(&task_setup_data
);
5488 status
= PTR_ERR(task
);
5491 status
= task
->tk_status
;
5492 if (setclientid
.sc_cred
) {
5493 clp
->cl_acceptor
= rpcauth_stringify_acceptor(setclientid
.sc_cred
);
5494 put_rpccred(setclientid
.sc_cred
);
5498 trace_nfs4_setclientid(clp
, status
);
5499 dprintk("NFS reply setclientid: %d\n", status
);
5504 * nfs4_proc_setclientid_confirm - Confirm client ID
5505 * @clp: state data structure
5506 * @res: result of a previous SETCLIENTID
5507 * @cred: RPC credential to use for this call
5509 * Returns zero, a negative errno, or a negative NFS4ERR status code.
5511 int nfs4_proc_setclientid_confirm(struct nfs_client
*clp
,
5512 struct nfs4_setclientid_res
*arg
,
5513 struct rpc_cred
*cred
)
5515 struct rpc_message msg
= {
5516 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETCLIENTID_CONFIRM
],
5522 dprintk("NFS call setclientid_confirm auth=%s, (client ID %llx)\n",
5523 clp
->cl_rpcclient
->cl_auth
->au_ops
->au_name
,
5525 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
5526 trace_nfs4_setclientid_confirm(clp
, status
);
5527 dprintk("NFS reply setclientid_confirm: %d\n", status
);
5531 struct nfs4_delegreturndata
{
5532 struct nfs4_delegreturnargs args
;
5533 struct nfs4_delegreturnres res
;
5535 nfs4_stateid stateid
;
5536 unsigned long timestamp
;
5538 struct nfs4_layoutreturn_args arg
;
5539 struct nfs4_layoutreturn_res res
;
5540 struct nfs4_xdr_opaque_data ld_private
;
5544 struct nfs_fattr fattr
;
5546 struct inode
*inode
;
5549 static void nfs4_delegreturn_done(struct rpc_task
*task
, void *calldata
)
5551 struct nfs4_delegreturndata
*data
= calldata
;
5553 if (!nfs4_sequence_done(task
, &data
->res
.seq_res
))
5556 trace_nfs4_delegreturn_exit(&data
->args
, &data
->res
, task
->tk_status
);
5558 /* Handle Layoutreturn errors */
5559 if (data
->args
.lr_args
&& task
->tk_status
!= 0) {
5560 switch(data
->res
.lr_ret
) {
5562 data
->res
.lr_ret
= -NFS4ERR_NOMATCHING_LAYOUT
;
5565 data
->args
.lr_args
= NULL
;
5566 data
->res
.lr_res
= NULL
;
5568 case -NFS4ERR_ADMIN_REVOKED
:
5569 case -NFS4ERR_DELEG_REVOKED
:
5570 case -NFS4ERR_EXPIRED
:
5571 case -NFS4ERR_BAD_STATEID
:
5572 case -NFS4ERR_OLD_STATEID
:
5573 case -NFS4ERR_UNKNOWN_LAYOUTTYPE
:
5574 case -NFS4ERR_WRONG_CRED
:
5575 data
->args
.lr_args
= NULL
;
5576 data
->res
.lr_res
= NULL
;
5577 data
->res
.lr_ret
= 0;
5578 rpc_restart_call_prepare(task
);
5583 switch (task
->tk_status
) {
5585 renew_lease(data
->res
.server
, data
->timestamp
);
5587 case -NFS4ERR_ADMIN_REVOKED
:
5588 case -NFS4ERR_DELEG_REVOKED
:
5589 case -NFS4ERR_EXPIRED
:
5590 nfs4_free_revoked_stateid(data
->res
.server
,
5592 task
->tk_msg
.rpc_cred
);
5593 case -NFS4ERR_BAD_STATEID
:
5594 case -NFS4ERR_OLD_STATEID
:
5595 case -NFS4ERR_STALE_STATEID
:
5596 task
->tk_status
= 0;
5598 case -NFS4ERR_ACCESS
:
5599 if (data
->args
.bitmask
) {
5600 data
->args
.bitmask
= NULL
;
5601 data
->res
.fattr
= NULL
;
5602 task
->tk_status
= 0;
5603 rpc_restart_call_prepare(task
);
5607 if (nfs4_async_handle_error(task
, data
->res
.server
,
5608 NULL
, NULL
) == -EAGAIN
) {
5609 rpc_restart_call_prepare(task
);
5613 data
->rpc_status
= task
->tk_status
;
5616 static void nfs4_delegreturn_release(void *calldata
)
5618 struct nfs4_delegreturndata
*data
= calldata
;
5619 struct inode
*inode
= data
->inode
;
5623 pnfs_roc_release(&data
->lr
.arg
, &data
->lr
.res
,
5625 nfs_post_op_update_inode_force_wcc(inode
, &data
->fattr
);
5626 nfs_iput_and_deactive(inode
);
5631 static void nfs4_delegreturn_prepare(struct rpc_task
*task
, void *data
)
5633 struct nfs4_delegreturndata
*d_data
;
5635 d_data
= (struct nfs4_delegreturndata
*)data
;
5637 if (!d_data
->lr
.roc
&& nfs4_wait_on_layoutreturn(d_data
->inode
, task
))
5640 nfs4_setup_sequence(d_data
->res
.server
->nfs_client
,
5641 &d_data
->args
.seq_args
,
5642 &d_data
->res
.seq_res
,
5646 static const struct rpc_call_ops nfs4_delegreturn_ops
= {
5647 .rpc_call_prepare
= nfs4_delegreturn_prepare
,
5648 .rpc_call_done
= nfs4_delegreturn_done
,
5649 .rpc_release
= nfs4_delegreturn_release
,
5652 static int _nfs4_proc_delegreturn(struct inode
*inode
, struct rpc_cred
*cred
, const nfs4_stateid
*stateid
, int issync
)
5654 struct nfs4_delegreturndata
*data
;
5655 struct nfs_server
*server
= NFS_SERVER(inode
);
5656 struct rpc_task
*task
;
5657 struct rpc_message msg
= {
5658 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_DELEGRETURN
],
5661 struct rpc_task_setup task_setup_data
= {
5662 .rpc_client
= server
->client
,
5663 .rpc_message
= &msg
,
5664 .callback_ops
= &nfs4_delegreturn_ops
,
5665 .flags
= RPC_TASK_ASYNC
,
5669 data
= kzalloc(sizeof(*data
), GFP_NOFS
);
5672 nfs4_init_sequence(&data
->args
.seq_args
, &data
->res
.seq_res
, 1);
5674 nfs4_state_protect(server
->nfs_client
,
5675 NFS_SP4_MACH_CRED_CLEANUP
,
5676 &task_setup_data
.rpc_client
, &msg
);
5678 data
->args
.fhandle
= &data
->fh
;
5679 data
->args
.stateid
= &data
->stateid
;
5680 data
->args
.bitmask
= server
->cache_consistency_bitmask
;
5681 nfs_copy_fh(&data
->fh
, NFS_FH(inode
));
5682 nfs4_stateid_copy(&data
->stateid
, stateid
);
5683 data
->res
.fattr
= &data
->fattr
;
5684 data
->res
.server
= server
;
5685 data
->res
.lr_ret
= -NFS4ERR_NOMATCHING_LAYOUT
;
5686 data
->lr
.arg
.ld_private
= &data
->lr
.ld_private
;
5687 nfs_fattr_init(data
->res
.fattr
);
5688 data
->timestamp
= jiffies
;
5689 data
->rpc_status
= 0;
5690 data
->lr
.roc
= pnfs_roc(inode
, &data
->lr
.arg
, &data
->lr
.res
, cred
);
5691 data
->inode
= nfs_igrab_and_active(inode
);
5694 data
->args
.lr_args
= &data
->lr
.arg
;
5695 data
->res
.lr_res
= &data
->lr
.res
;
5697 } else if (data
->lr
.roc
) {
5698 pnfs_roc_release(&data
->lr
.arg
, &data
->lr
.res
, 0);
5699 data
->lr
.roc
= false;
5702 task_setup_data
.callback_data
= data
;
5703 msg
.rpc_argp
= &data
->args
;
5704 msg
.rpc_resp
= &data
->res
;
5705 task
= rpc_run_task(&task_setup_data
);
5707 return PTR_ERR(task
);
5710 status
= rpc_wait_for_completion_task(task
);
5713 status
= data
->rpc_status
;
5719 int nfs4_proc_delegreturn(struct inode
*inode
, struct rpc_cred
*cred
, const nfs4_stateid
*stateid
, int issync
)
5721 struct nfs_server
*server
= NFS_SERVER(inode
);
5722 struct nfs4_exception exception
= { };
5725 err
= _nfs4_proc_delegreturn(inode
, cred
, stateid
, issync
);
5726 trace_nfs4_delegreturn(inode
, stateid
, err
);
5728 case -NFS4ERR_STALE_STATEID
:
5729 case -NFS4ERR_EXPIRED
:
5733 err
= nfs4_handle_exception(server
, err
, &exception
);
5734 } while (exception
.retry
);
5738 static int _nfs4_proc_getlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
5740 struct inode
*inode
= state
->inode
;
5741 struct nfs_server
*server
= NFS_SERVER(inode
);
5742 struct nfs_client
*clp
= server
->nfs_client
;
5743 struct nfs_lockt_args arg
= {
5744 .fh
= NFS_FH(inode
),
5747 struct nfs_lockt_res res
= {
5750 struct rpc_message msg
= {
5751 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOCKT
],
5754 .rpc_cred
= state
->owner
->so_cred
,
5756 struct nfs4_lock_state
*lsp
;
5759 arg
.lock_owner
.clientid
= clp
->cl_clientid
;
5760 status
= nfs4_set_lock_state(state
, request
);
5763 lsp
= request
->fl_u
.nfs4_fl
.owner
;
5764 arg
.lock_owner
.id
= lsp
->ls_seqid
.owner_id
;
5765 arg
.lock_owner
.s_dev
= server
->s_dev
;
5766 status
= nfs4_call_sync(server
->client
, server
, &msg
, &arg
.seq_args
, &res
.seq_res
, 1);
5769 request
->fl_type
= F_UNLCK
;
5771 case -NFS4ERR_DENIED
:
5774 request
->fl_ops
->fl_release_private(request
);
5775 request
->fl_ops
= NULL
;
5780 static int nfs4_proc_getlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
5782 struct nfs4_exception exception
= { };
5786 err
= _nfs4_proc_getlk(state
, cmd
, request
);
5787 trace_nfs4_get_lock(request
, state
, cmd
, err
);
5788 err
= nfs4_handle_exception(NFS_SERVER(state
->inode
), err
,
5790 } while (exception
.retry
);
5794 struct nfs4_unlockdata
{
5795 struct nfs_locku_args arg
;
5796 struct nfs_locku_res res
;
5797 struct nfs4_lock_state
*lsp
;
5798 struct nfs_open_context
*ctx
;
5799 struct nfs_lock_context
*l_ctx
;
5800 struct file_lock fl
;
5801 struct nfs_server
*server
;
5802 unsigned long timestamp
;
5805 static struct nfs4_unlockdata
*nfs4_alloc_unlockdata(struct file_lock
*fl
,
5806 struct nfs_open_context
*ctx
,
5807 struct nfs4_lock_state
*lsp
,
5808 struct nfs_seqid
*seqid
)
5810 struct nfs4_unlockdata
*p
;
5811 struct inode
*inode
= lsp
->ls_state
->inode
;
5813 p
= kzalloc(sizeof(*p
), GFP_NOFS
);
5816 p
->arg
.fh
= NFS_FH(inode
);
5818 p
->arg
.seqid
= seqid
;
5819 p
->res
.seqid
= seqid
;
5821 atomic_inc(&lsp
->ls_count
);
5822 /* Ensure we don't close file until we're done freeing locks! */
5823 p
->ctx
= get_nfs_open_context(ctx
);
5824 p
->l_ctx
= nfs_get_lock_context(ctx
);
5825 memcpy(&p
->fl
, fl
, sizeof(p
->fl
));
5826 p
->server
= NFS_SERVER(inode
);
5830 static void nfs4_locku_release_calldata(void *data
)
5832 struct nfs4_unlockdata
*calldata
= data
;
5833 nfs_free_seqid(calldata
->arg
.seqid
);
5834 nfs4_put_lock_state(calldata
->lsp
);
5835 nfs_put_lock_context(calldata
->l_ctx
);
5836 put_nfs_open_context(calldata
->ctx
);
5840 static void nfs4_locku_done(struct rpc_task
*task
, void *data
)
5842 struct nfs4_unlockdata
*calldata
= data
;
5844 if (!nfs4_sequence_done(task
, &calldata
->res
.seq_res
))
5846 switch (task
->tk_status
) {
5848 renew_lease(calldata
->server
, calldata
->timestamp
);
5849 locks_lock_inode_wait(calldata
->lsp
->ls_state
->inode
, &calldata
->fl
);
5850 if (nfs4_update_lock_stateid(calldata
->lsp
,
5851 &calldata
->res
.stateid
))
5853 case -NFS4ERR_ADMIN_REVOKED
:
5854 case -NFS4ERR_EXPIRED
:
5855 nfs4_free_revoked_stateid(calldata
->server
,
5856 &calldata
->arg
.stateid
,
5857 task
->tk_msg
.rpc_cred
);
5858 case -NFS4ERR_BAD_STATEID
:
5859 case -NFS4ERR_OLD_STATEID
:
5860 case -NFS4ERR_STALE_STATEID
:
5861 if (!nfs4_stateid_match(&calldata
->arg
.stateid
,
5862 &calldata
->lsp
->ls_stateid
))
5863 rpc_restart_call_prepare(task
);
5866 if (nfs4_async_handle_error(task
, calldata
->server
,
5867 NULL
, NULL
) == -EAGAIN
)
5868 rpc_restart_call_prepare(task
);
5870 nfs_release_seqid(calldata
->arg
.seqid
);
5873 static void nfs4_locku_prepare(struct rpc_task
*task
, void *data
)
5875 struct nfs4_unlockdata
*calldata
= data
;
5877 if (test_bit(NFS_CONTEXT_UNLOCK
, &calldata
->l_ctx
->open_context
->flags
) &&
5878 nfs_async_iocounter_wait(task
, calldata
->l_ctx
))
5881 if (nfs_wait_on_sequence(calldata
->arg
.seqid
, task
) != 0)
5883 nfs4_stateid_copy(&calldata
->arg
.stateid
, &calldata
->lsp
->ls_stateid
);
5884 if (test_bit(NFS_LOCK_INITIALIZED
, &calldata
->lsp
->ls_flags
) == 0) {
5885 /* Note: exit _without_ running nfs4_locku_done */
5888 calldata
->timestamp
= jiffies
;
5889 if (nfs4_setup_sequence(calldata
->server
->nfs_client
,
5890 &calldata
->arg
.seq_args
,
5891 &calldata
->res
.seq_res
,
5893 nfs_release_seqid(calldata
->arg
.seqid
);
5896 task
->tk_action
= NULL
;
5898 nfs4_sequence_done(task
, &calldata
->res
.seq_res
);
5901 static const struct rpc_call_ops nfs4_locku_ops
= {
5902 .rpc_call_prepare
= nfs4_locku_prepare
,
5903 .rpc_call_done
= nfs4_locku_done
,
5904 .rpc_release
= nfs4_locku_release_calldata
,
5907 static struct rpc_task
*nfs4_do_unlck(struct file_lock
*fl
,
5908 struct nfs_open_context
*ctx
,
5909 struct nfs4_lock_state
*lsp
,
5910 struct nfs_seqid
*seqid
)
5912 struct nfs4_unlockdata
*data
;
5913 struct rpc_message msg
= {
5914 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOCKU
],
5915 .rpc_cred
= ctx
->cred
,
5917 struct rpc_task_setup task_setup_data
= {
5918 .rpc_client
= NFS_CLIENT(lsp
->ls_state
->inode
),
5919 .rpc_message
= &msg
,
5920 .callback_ops
= &nfs4_locku_ops
,
5921 .workqueue
= nfsiod_workqueue
,
5922 .flags
= RPC_TASK_ASYNC
,
5925 nfs4_state_protect(NFS_SERVER(lsp
->ls_state
->inode
)->nfs_client
,
5926 NFS_SP4_MACH_CRED_CLEANUP
, &task_setup_data
.rpc_client
, &msg
);
5928 /* Ensure this is an unlock - when canceling a lock, the
5929 * canceled lock is passed in, and it won't be an unlock.
5931 fl
->fl_type
= F_UNLCK
;
5932 if (fl
->fl_flags
& FL_CLOSE
)
5933 set_bit(NFS_CONTEXT_UNLOCK
, &ctx
->flags
);
5935 data
= nfs4_alloc_unlockdata(fl
, ctx
, lsp
, seqid
);
5937 nfs_free_seqid(seqid
);
5938 return ERR_PTR(-ENOMEM
);
5941 nfs4_init_sequence(&data
->arg
.seq_args
, &data
->res
.seq_res
, 1);
5942 msg
.rpc_argp
= &data
->arg
;
5943 msg
.rpc_resp
= &data
->res
;
5944 task_setup_data
.callback_data
= data
;
5945 return rpc_run_task(&task_setup_data
);
5948 static int nfs4_proc_unlck(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
5950 struct inode
*inode
= state
->inode
;
5951 struct nfs4_state_owner
*sp
= state
->owner
;
5952 struct nfs_inode
*nfsi
= NFS_I(inode
);
5953 struct nfs_seqid
*seqid
;
5954 struct nfs4_lock_state
*lsp
;
5955 struct rpc_task
*task
;
5956 struct nfs_seqid
*(*alloc_seqid
)(struct nfs_seqid_counter
*, gfp_t
);
5958 unsigned char fl_flags
= request
->fl_flags
;
5960 status
= nfs4_set_lock_state(state
, request
);
5961 /* Unlock _before_ we do the RPC call */
5962 request
->fl_flags
|= FL_EXISTS
;
5963 /* Exclude nfs_delegation_claim_locks() */
5964 mutex_lock(&sp
->so_delegreturn_mutex
);
5965 /* Exclude nfs4_reclaim_open_stateid() - note nesting! */
5966 down_read(&nfsi
->rwsem
);
5967 if (locks_lock_inode_wait(inode
, request
) == -ENOENT
) {
5968 up_read(&nfsi
->rwsem
);
5969 mutex_unlock(&sp
->so_delegreturn_mutex
);
5972 up_read(&nfsi
->rwsem
);
5973 mutex_unlock(&sp
->so_delegreturn_mutex
);
5976 /* Is this a delegated lock? */
5977 lsp
= request
->fl_u
.nfs4_fl
.owner
;
5978 if (test_bit(NFS_LOCK_INITIALIZED
, &lsp
->ls_flags
) == 0)
5980 alloc_seqid
= NFS_SERVER(inode
)->nfs_client
->cl_mvops
->alloc_seqid
;
5981 seqid
= alloc_seqid(&lsp
->ls_seqid
, GFP_KERNEL
);
5985 task
= nfs4_do_unlck(request
, nfs_file_open_context(request
->fl_file
), lsp
, seqid
);
5986 status
= PTR_ERR(task
);
5989 status
= rpc_wait_for_completion_task(task
);
5992 request
->fl_flags
= fl_flags
;
5993 trace_nfs4_unlock(request
, state
, F_SETLK
, status
);
5997 struct nfs4_lockdata
{
5998 struct nfs_lock_args arg
;
5999 struct nfs_lock_res res
;
6000 struct nfs4_lock_state
*lsp
;
6001 struct nfs_open_context
*ctx
;
6002 struct file_lock fl
;
6003 unsigned long timestamp
;
6006 struct nfs_server
*server
;
6009 static struct nfs4_lockdata
*nfs4_alloc_lockdata(struct file_lock
*fl
,
6010 struct nfs_open_context
*ctx
, struct nfs4_lock_state
*lsp
,
6013 struct nfs4_lockdata
*p
;
6014 struct inode
*inode
= lsp
->ls_state
->inode
;
6015 struct nfs_server
*server
= NFS_SERVER(inode
);
6016 struct nfs_seqid
*(*alloc_seqid
)(struct nfs_seqid_counter
*, gfp_t
);
6018 p
= kzalloc(sizeof(*p
), gfp_mask
);
6022 p
->arg
.fh
= NFS_FH(inode
);
6024 p
->arg
.open_seqid
= nfs_alloc_seqid(&lsp
->ls_state
->owner
->so_seqid
, gfp_mask
);
6025 if (IS_ERR(p
->arg
.open_seqid
))
6027 alloc_seqid
= server
->nfs_client
->cl_mvops
->alloc_seqid
;
6028 p
->arg
.lock_seqid
= alloc_seqid(&lsp
->ls_seqid
, gfp_mask
);
6029 if (IS_ERR(p
->arg
.lock_seqid
))
6030 goto out_free_seqid
;
6031 p
->arg
.lock_owner
.clientid
= server
->nfs_client
->cl_clientid
;
6032 p
->arg
.lock_owner
.id
= lsp
->ls_seqid
.owner_id
;
6033 p
->arg
.lock_owner
.s_dev
= server
->s_dev
;
6034 p
->res
.lock_seqid
= p
->arg
.lock_seqid
;
6037 atomic_inc(&lsp
->ls_count
);
6038 p
->ctx
= get_nfs_open_context(ctx
);
6039 memcpy(&p
->fl
, fl
, sizeof(p
->fl
));
6042 nfs_free_seqid(p
->arg
.open_seqid
);
6048 static void nfs4_lock_prepare(struct rpc_task
*task
, void *calldata
)
6050 struct nfs4_lockdata
*data
= calldata
;
6051 struct nfs4_state
*state
= data
->lsp
->ls_state
;
6053 dprintk("%s: begin!\n", __func__
);
6054 if (nfs_wait_on_sequence(data
->arg
.lock_seqid
, task
) != 0)
6056 /* Do we need to do an open_to_lock_owner? */
6057 if (!test_bit(NFS_LOCK_INITIALIZED
, &data
->lsp
->ls_flags
)) {
6058 if (nfs_wait_on_sequence(data
->arg
.open_seqid
, task
) != 0) {
6059 goto out_release_lock_seqid
;
6061 nfs4_stateid_copy(&data
->arg
.open_stateid
,
6062 &state
->open_stateid
);
6063 data
->arg
.new_lock_owner
= 1;
6064 data
->res
.open_seqid
= data
->arg
.open_seqid
;
6066 data
->arg
.new_lock_owner
= 0;
6067 nfs4_stateid_copy(&data
->arg
.lock_stateid
,
6068 &data
->lsp
->ls_stateid
);
6070 if (!nfs4_valid_open_stateid(state
)) {
6071 data
->rpc_status
= -EBADF
;
6072 task
->tk_action
= NULL
;
6073 goto out_release_open_seqid
;
6075 data
->timestamp
= jiffies
;
6076 if (nfs4_setup_sequence(data
->server
->nfs_client
,
6077 &data
->arg
.seq_args
,
6081 out_release_open_seqid
:
6082 nfs_release_seqid(data
->arg
.open_seqid
);
6083 out_release_lock_seqid
:
6084 nfs_release_seqid(data
->arg
.lock_seqid
);
6086 nfs4_sequence_done(task
, &data
->res
.seq_res
);
6087 dprintk("%s: done!, ret = %d\n", __func__
, data
->rpc_status
);
6090 static void nfs4_lock_done(struct rpc_task
*task
, void *calldata
)
6092 struct nfs4_lockdata
*data
= calldata
;
6093 struct nfs4_lock_state
*lsp
= data
->lsp
;
6095 dprintk("%s: begin!\n", __func__
);
6097 if (!nfs4_sequence_done(task
, &data
->res
.seq_res
))
6100 data
->rpc_status
= task
->tk_status
;
6101 switch (task
->tk_status
) {
6103 renew_lease(NFS_SERVER(d_inode(data
->ctx
->dentry
)),
6105 if (data
->arg
.new_lock
) {
6106 data
->fl
.fl_flags
&= ~(FL_SLEEP
| FL_ACCESS
);
6107 if (locks_lock_inode_wait(lsp
->ls_state
->inode
, &data
->fl
) < 0) {
6108 rpc_restart_call_prepare(task
);
6112 if (data
->arg
.new_lock_owner
!= 0) {
6113 nfs_confirm_seqid(&lsp
->ls_seqid
, 0);
6114 nfs4_stateid_copy(&lsp
->ls_stateid
, &data
->res
.stateid
);
6115 set_bit(NFS_LOCK_INITIALIZED
, &lsp
->ls_flags
);
6116 } else if (!nfs4_update_lock_stateid(lsp
, &data
->res
.stateid
))
6117 rpc_restart_call_prepare(task
);
6119 case -NFS4ERR_BAD_STATEID
:
6120 case -NFS4ERR_OLD_STATEID
:
6121 case -NFS4ERR_STALE_STATEID
:
6122 case -NFS4ERR_EXPIRED
:
6123 if (data
->arg
.new_lock_owner
!= 0) {
6124 if (!nfs4_stateid_match(&data
->arg
.open_stateid
,
6125 &lsp
->ls_state
->open_stateid
))
6126 rpc_restart_call_prepare(task
);
6127 } else if (!nfs4_stateid_match(&data
->arg
.lock_stateid
,
6129 rpc_restart_call_prepare(task
);
6131 dprintk("%s: done, ret = %d!\n", __func__
, data
->rpc_status
);
6134 static void nfs4_lock_release(void *calldata
)
6136 struct nfs4_lockdata
*data
= calldata
;
6138 dprintk("%s: begin!\n", __func__
);
6139 nfs_free_seqid(data
->arg
.open_seqid
);
6140 if (data
->cancelled
!= 0) {
6141 struct rpc_task
*task
;
6142 task
= nfs4_do_unlck(&data
->fl
, data
->ctx
, data
->lsp
,
6143 data
->arg
.lock_seqid
);
6145 rpc_put_task_async(task
);
6146 dprintk("%s: cancelling lock!\n", __func__
);
6148 nfs_free_seqid(data
->arg
.lock_seqid
);
6149 nfs4_put_lock_state(data
->lsp
);
6150 put_nfs_open_context(data
->ctx
);
6152 dprintk("%s: done!\n", __func__
);
6155 static const struct rpc_call_ops nfs4_lock_ops
= {
6156 .rpc_call_prepare
= nfs4_lock_prepare
,
6157 .rpc_call_done
= nfs4_lock_done
,
6158 .rpc_release
= nfs4_lock_release
,
6161 static void nfs4_handle_setlk_error(struct nfs_server
*server
, struct nfs4_lock_state
*lsp
, int new_lock_owner
, int error
)
6164 case -NFS4ERR_ADMIN_REVOKED
:
6165 case -NFS4ERR_EXPIRED
:
6166 case -NFS4ERR_BAD_STATEID
:
6167 lsp
->ls_seqid
.flags
&= ~NFS_SEQID_CONFIRMED
;
6168 if (new_lock_owner
!= 0 ||
6169 test_bit(NFS_LOCK_INITIALIZED
, &lsp
->ls_flags
) != 0)
6170 nfs4_schedule_stateid_recovery(server
, lsp
->ls_state
);
6172 case -NFS4ERR_STALE_STATEID
:
6173 lsp
->ls_seqid
.flags
&= ~NFS_SEQID_CONFIRMED
;
6174 nfs4_schedule_lease_recovery(server
->nfs_client
);
6178 static int _nfs4_do_setlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*fl
, int recovery_type
)
6180 struct nfs4_lockdata
*data
;
6181 struct rpc_task
*task
;
6182 struct rpc_message msg
= {
6183 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOCK
],
6184 .rpc_cred
= state
->owner
->so_cred
,
6186 struct rpc_task_setup task_setup_data
= {
6187 .rpc_client
= NFS_CLIENT(state
->inode
),
6188 .rpc_message
= &msg
,
6189 .callback_ops
= &nfs4_lock_ops
,
6190 .workqueue
= nfsiod_workqueue
,
6191 .flags
= RPC_TASK_ASYNC
,
6195 dprintk("%s: begin!\n", __func__
);
6196 data
= nfs4_alloc_lockdata(fl
, nfs_file_open_context(fl
->fl_file
),
6197 fl
->fl_u
.nfs4_fl
.owner
,
6198 recovery_type
== NFS_LOCK_NEW
? GFP_KERNEL
: GFP_NOFS
);
6202 data
->arg
.block
= 1;
6203 nfs4_init_sequence(&data
->arg
.seq_args
, &data
->res
.seq_res
, 1);
6204 msg
.rpc_argp
= &data
->arg
;
6205 msg
.rpc_resp
= &data
->res
;
6206 task_setup_data
.callback_data
= data
;
6207 if (recovery_type
> NFS_LOCK_NEW
) {
6208 if (recovery_type
== NFS_LOCK_RECLAIM
)
6209 data
->arg
.reclaim
= NFS_LOCK_RECLAIM
;
6210 nfs4_set_sequence_privileged(&data
->arg
.seq_args
);
6212 data
->arg
.new_lock
= 1;
6213 task
= rpc_run_task(&task_setup_data
);
6215 return PTR_ERR(task
);
6216 ret
= rpc_wait_for_completion_task(task
);
6218 ret
= data
->rpc_status
;
6220 nfs4_handle_setlk_error(data
->server
, data
->lsp
,
6221 data
->arg
.new_lock_owner
, ret
);
6223 data
->cancelled
= 1;
6225 dprintk("%s: done, ret = %d!\n", __func__
, ret
);
6226 trace_nfs4_set_lock(fl
, state
, &data
->res
.stateid
, cmd
, ret
);
6230 static int nfs4_lock_reclaim(struct nfs4_state
*state
, struct file_lock
*request
)
6232 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
6233 struct nfs4_exception exception
= {
6234 .inode
= state
->inode
,
6239 /* Cache the lock if possible... */
6240 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) != 0)
6242 err
= _nfs4_do_setlk(state
, F_SETLK
, request
, NFS_LOCK_RECLAIM
);
6243 if (err
!= -NFS4ERR_DELAY
)
6245 nfs4_handle_exception(server
, err
, &exception
);
6246 } while (exception
.retry
);
6250 static int nfs4_lock_expired(struct nfs4_state
*state
, struct file_lock
*request
)
6252 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
6253 struct nfs4_exception exception
= {
6254 .inode
= state
->inode
,
6258 err
= nfs4_set_lock_state(state
, request
);
6261 if (!recover_lost_locks
) {
6262 set_bit(NFS_LOCK_LOST
, &request
->fl_u
.nfs4_fl
.owner
->ls_flags
);
6266 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) != 0)
6268 err
= _nfs4_do_setlk(state
, F_SETLK
, request
, NFS_LOCK_EXPIRED
);
6272 case -NFS4ERR_GRACE
:
6273 case -NFS4ERR_DELAY
:
6274 nfs4_handle_exception(server
, err
, &exception
);
6277 } while (exception
.retry
);
6282 #if defined(CONFIG_NFS_V4_1)
6283 static int nfs41_lock_expired(struct nfs4_state
*state
, struct file_lock
*request
)
6285 struct nfs4_lock_state
*lsp
;
6288 status
= nfs4_set_lock_state(state
, request
);
6291 lsp
= request
->fl_u
.nfs4_fl
.owner
;
6292 if (test_bit(NFS_LOCK_INITIALIZED
, &lsp
->ls_flags
) ||
6293 test_bit(NFS_LOCK_LOST
, &lsp
->ls_flags
))
6295 return nfs4_lock_expired(state
, request
);
6299 static int _nfs4_proc_setlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
6301 struct nfs_inode
*nfsi
= NFS_I(state
->inode
);
6302 struct nfs4_state_owner
*sp
= state
->owner
;
6303 unsigned char fl_flags
= request
->fl_flags
;
6306 request
->fl_flags
|= FL_ACCESS
;
6307 status
= locks_lock_inode_wait(state
->inode
, request
);
6310 mutex_lock(&sp
->so_delegreturn_mutex
);
6311 down_read(&nfsi
->rwsem
);
6312 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
)) {
6313 /* Yes: cache locks! */
6314 /* ...but avoid races with delegation recall... */
6315 request
->fl_flags
= fl_flags
& ~FL_SLEEP
;
6316 status
= locks_lock_inode_wait(state
->inode
, request
);
6317 up_read(&nfsi
->rwsem
);
6318 mutex_unlock(&sp
->so_delegreturn_mutex
);
6321 up_read(&nfsi
->rwsem
);
6322 mutex_unlock(&sp
->so_delegreturn_mutex
);
6323 status
= _nfs4_do_setlk(state
, cmd
, request
, NFS_LOCK_NEW
);
6325 request
->fl_flags
= fl_flags
;
6329 static int nfs4_proc_setlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
6331 struct nfs4_exception exception
= {
6333 .inode
= state
->inode
,
6338 err
= _nfs4_proc_setlk(state
, cmd
, request
);
6339 if (err
== -NFS4ERR_DENIED
)
6341 err
= nfs4_handle_exception(NFS_SERVER(state
->inode
),
6343 } while (exception
.retry
);
6347 #define NFS4_LOCK_MINTIMEOUT (1 * HZ)
6348 #define NFS4_LOCK_MAXTIMEOUT (30 * HZ)
6351 nfs4_retry_setlk_simple(struct nfs4_state
*state
, int cmd
,
6352 struct file_lock
*request
)
6354 int status
= -ERESTARTSYS
;
6355 unsigned long timeout
= NFS4_LOCK_MINTIMEOUT
;
6357 while(!signalled()) {
6358 status
= nfs4_proc_setlk(state
, cmd
, request
);
6359 if ((status
!= -EAGAIN
) || IS_SETLK(cmd
))
6361 freezable_schedule_timeout_interruptible(timeout
);
6363 timeout
= min_t(unsigned long, NFS4_LOCK_MAXTIMEOUT
, timeout
);
6364 status
= -ERESTARTSYS
;
6369 #ifdef CONFIG_NFS_V4_1
6370 struct nfs4_lock_waiter
{
6371 struct task_struct
*task
;
6372 struct inode
*inode
;
6373 struct nfs_lowner
*owner
;
6378 nfs4_wake_lock_waiter(wait_queue_t
*wait
, unsigned int mode
, int flags
, void *key
)
6381 struct cb_notify_lock_args
*cbnl
= key
;
6382 struct nfs4_lock_waiter
*waiter
= wait
->private;
6383 struct nfs_lowner
*lowner
= &cbnl
->cbnl_owner
,
6384 *wowner
= waiter
->owner
;
6386 /* Only wake if the callback was for the same owner */
6387 if (lowner
->clientid
!= wowner
->clientid
||
6388 lowner
->id
!= wowner
->id
||
6389 lowner
->s_dev
!= wowner
->s_dev
)
6392 /* Make sure it's for the right inode */
6393 if (nfs_compare_fh(NFS_FH(waiter
->inode
), &cbnl
->cbnl_fh
))
6396 waiter
->notified
= true;
6398 /* override "private" so we can use default_wake_function */
6399 wait
->private = waiter
->task
;
6400 ret
= autoremove_wake_function(wait
, mode
, flags
, key
);
6401 wait
->private = waiter
;
6406 nfs4_retry_setlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
6408 int status
= -ERESTARTSYS
;
6409 unsigned long flags
;
6410 struct nfs4_lock_state
*lsp
= request
->fl_u
.nfs4_fl
.owner
;
6411 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
6412 struct nfs_client
*clp
= server
->nfs_client
;
6413 wait_queue_head_t
*q
= &clp
->cl_lock_waitq
;
6414 struct nfs_lowner owner
= { .clientid
= clp
->cl_clientid
,
6415 .id
= lsp
->ls_seqid
.owner_id
,
6416 .s_dev
= server
->s_dev
};
6417 struct nfs4_lock_waiter waiter
= { .task
= current
,
6418 .inode
= state
->inode
,
6420 .notified
= false };
6423 /* Don't bother with waitqueue if we don't expect a callback */
6424 if (!test_bit(NFS_STATE_MAY_NOTIFY_LOCK
, &state
->flags
))
6425 return nfs4_retry_setlk_simple(state
, cmd
, request
);
6428 wait
.private = &waiter
;
6429 wait
.func
= nfs4_wake_lock_waiter
;
6430 add_wait_queue(q
, &wait
);
6432 while(!signalled()) {
6433 status
= nfs4_proc_setlk(state
, cmd
, request
);
6434 if ((status
!= -EAGAIN
) || IS_SETLK(cmd
))
6437 status
= -ERESTARTSYS
;
6438 spin_lock_irqsave(&q
->lock
, flags
);
6439 if (waiter
.notified
) {
6440 spin_unlock_irqrestore(&q
->lock
, flags
);
6443 set_current_state(TASK_INTERRUPTIBLE
);
6444 spin_unlock_irqrestore(&q
->lock
, flags
);
6446 freezable_schedule_timeout_interruptible(NFS4_LOCK_MAXTIMEOUT
);
6449 finish_wait(q
, &wait
);
6452 #else /* !CONFIG_NFS_V4_1 */
6454 nfs4_retry_setlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
6456 return nfs4_retry_setlk_simple(state
, cmd
, request
);
6461 nfs4_proc_lock(struct file
*filp
, int cmd
, struct file_lock
*request
)
6463 struct nfs_open_context
*ctx
;
6464 struct nfs4_state
*state
;
6467 /* verify open state */
6468 ctx
= nfs_file_open_context(filp
);
6471 if (IS_GETLK(cmd
)) {
6473 return nfs4_proc_getlk(state
, F_GETLK
, request
);
6477 if (!(IS_SETLK(cmd
) || IS_SETLKW(cmd
)))
6480 if (request
->fl_type
== F_UNLCK
) {
6482 return nfs4_proc_unlck(state
, cmd
, request
);
6489 if ((request
->fl_flags
& FL_POSIX
) &&
6490 !test_bit(NFS_STATE_POSIX_LOCKS
, &state
->flags
))
6493 status
= nfs4_set_lock_state(state
, request
);
6497 return nfs4_retry_setlk(state
, cmd
, request
);
6500 int nfs4_lock_delegation_recall(struct file_lock
*fl
, struct nfs4_state
*state
, const nfs4_stateid
*stateid
)
6502 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
6505 err
= nfs4_set_lock_state(state
, fl
);
6508 err
= _nfs4_do_setlk(state
, F_SETLK
, fl
, NFS_LOCK_NEW
);
6509 return nfs4_handle_delegation_recall_error(server
, state
, stateid
, err
);
6512 struct nfs_release_lockowner_data
{
6513 struct nfs4_lock_state
*lsp
;
6514 struct nfs_server
*server
;
6515 struct nfs_release_lockowner_args args
;
6516 struct nfs_release_lockowner_res res
;
6517 unsigned long timestamp
;
6520 static void nfs4_release_lockowner_prepare(struct rpc_task
*task
, void *calldata
)
6522 struct nfs_release_lockowner_data
*data
= calldata
;
6523 struct nfs_server
*server
= data
->server
;
6524 nfs4_setup_sequence(server
->nfs_client
, &data
->args
.seq_args
,
6525 &data
->res
.seq_res
, task
);
6526 data
->args
.lock_owner
.clientid
= server
->nfs_client
->cl_clientid
;
6527 data
->timestamp
= jiffies
;
6530 static void nfs4_release_lockowner_done(struct rpc_task
*task
, void *calldata
)
6532 struct nfs_release_lockowner_data
*data
= calldata
;
6533 struct nfs_server
*server
= data
->server
;
6535 nfs40_sequence_done(task
, &data
->res
.seq_res
);
6537 switch (task
->tk_status
) {
6539 renew_lease(server
, data
->timestamp
);
6541 case -NFS4ERR_STALE_CLIENTID
:
6542 case -NFS4ERR_EXPIRED
:
6543 nfs4_schedule_lease_recovery(server
->nfs_client
);
6545 case -NFS4ERR_LEASE_MOVED
:
6546 case -NFS4ERR_DELAY
:
6547 if (nfs4_async_handle_error(task
, server
,
6548 NULL
, NULL
) == -EAGAIN
)
6549 rpc_restart_call_prepare(task
);
6553 static void nfs4_release_lockowner_release(void *calldata
)
6555 struct nfs_release_lockowner_data
*data
= calldata
;
6556 nfs4_free_lock_state(data
->server
, data
->lsp
);
6560 static const struct rpc_call_ops nfs4_release_lockowner_ops
= {
6561 .rpc_call_prepare
= nfs4_release_lockowner_prepare
,
6562 .rpc_call_done
= nfs4_release_lockowner_done
,
6563 .rpc_release
= nfs4_release_lockowner_release
,
6567 nfs4_release_lockowner(struct nfs_server
*server
, struct nfs4_lock_state
*lsp
)
6569 struct nfs_release_lockowner_data
*data
;
6570 struct rpc_message msg
= {
6571 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RELEASE_LOCKOWNER
],
6574 if (server
->nfs_client
->cl_mvops
->minor_version
!= 0)
6577 data
= kmalloc(sizeof(*data
), GFP_NOFS
);
6581 data
->server
= server
;
6582 data
->args
.lock_owner
.clientid
= server
->nfs_client
->cl_clientid
;
6583 data
->args
.lock_owner
.id
= lsp
->ls_seqid
.owner_id
;
6584 data
->args
.lock_owner
.s_dev
= server
->s_dev
;
6586 msg
.rpc_argp
= &data
->args
;
6587 msg
.rpc_resp
= &data
->res
;
6588 nfs4_init_sequence(&data
->args
.seq_args
, &data
->res
.seq_res
, 0);
6589 rpc_call_async(server
->client
, &msg
, 0, &nfs4_release_lockowner_ops
, data
);
6592 #define XATTR_NAME_NFSV4_ACL "system.nfs4_acl"
6594 static int nfs4_xattr_set_nfs4_acl(const struct xattr_handler
*handler
,
6595 struct dentry
*unused
, struct inode
*inode
,
6596 const char *key
, const void *buf
,
6597 size_t buflen
, int flags
)
6599 return nfs4_proc_set_acl(inode
, buf
, buflen
);
6602 static int nfs4_xattr_get_nfs4_acl(const struct xattr_handler
*handler
,
6603 struct dentry
*unused
, struct inode
*inode
,
6604 const char *key
, void *buf
, size_t buflen
)
6606 return nfs4_proc_get_acl(inode
, buf
, buflen
);
6609 static bool nfs4_xattr_list_nfs4_acl(struct dentry
*dentry
)
6611 return nfs4_server_supports_acls(NFS_SERVER(d_inode(dentry
)));
6614 #ifdef CONFIG_NFS_V4_SECURITY_LABEL
6616 static int nfs4_xattr_set_nfs4_label(const struct xattr_handler
*handler
,
6617 struct dentry
*unused
, struct inode
*inode
,
6618 const char *key
, const void *buf
,
6619 size_t buflen
, int flags
)
6621 if (security_ismaclabel(key
))
6622 return nfs4_set_security_label(inode
, buf
, buflen
);
6627 static int nfs4_xattr_get_nfs4_label(const struct xattr_handler
*handler
,
6628 struct dentry
*unused
, struct inode
*inode
,
6629 const char *key
, void *buf
, size_t buflen
)
6631 if (security_ismaclabel(key
))
6632 return nfs4_get_security_label(inode
, buf
, buflen
);
6637 nfs4_listxattr_nfs4_label(struct inode
*inode
, char *list
, size_t list_len
)
6641 if (nfs_server_capable(inode
, NFS_CAP_SECURITY_LABEL
)) {
6642 len
= security_inode_listsecurity(inode
, list
, list_len
);
6643 if (list_len
&& len
> list_len
)
6649 static const struct xattr_handler nfs4_xattr_nfs4_label_handler
= {
6650 .prefix
= XATTR_SECURITY_PREFIX
,
6651 .get
= nfs4_xattr_get_nfs4_label
,
6652 .set
= nfs4_xattr_set_nfs4_label
,
6658 nfs4_listxattr_nfs4_label(struct inode
*inode
, char *list
, size_t list_len
)
6666 * nfs_fhget will use either the mounted_on_fileid or the fileid
6668 static void nfs_fixup_referral_attributes(struct nfs_fattr
*fattr
)
6670 if (!(((fattr
->valid
& NFS_ATTR_FATTR_MOUNTED_ON_FILEID
) ||
6671 (fattr
->valid
& NFS_ATTR_FATTR_FILEID
)) &&
6672 (fattr
->valid
& NFS_ATTR_FATTR_FSID
) &&
6673 (fattr
->valid
& NFS_ATTR_FATTR_V4_LOCATIONS
)))
6676 fattr
->valid
|= NFS_ATTR_FATTR_TYPE
| NFS_ATTR_FATTR_MODE
|
6677 NFS_ATTR_FATTR_NLINK
| NFS_ATTR_FATTR_V4_REFERRAL
;
6678 fattr
->mode
= S_IFDIR
| S_IRUGO
| S_IXUGO
;
6682 static int _nfs4_proc_fs_locations(struct rpc_clnt
*client
, struct inode
*dir
,
6683 const struct qstr
*name
,
6684 struct nfs4_fs_locations
*fs_locations
,
6687 struct nfs_server
*server
= NFS_SERVER(dir
);
6689 [0] = FATTR4_WORD0_FSID
| FATTR4_WORD0_FS_LOCATIONS
,
6691 struct nfs4_fs_locations_arg args
= {
6692 .dir_fh
= NFS_FH(dir
),
6697 struct nfs4_fs_locations_res res
= {
6698 .fs_locations
= fs_locations
,
6700 struct rpc_message msg
= {
6701 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_FS_LOCATIONS
],
6707 dprintk("%s: start\n", __func__
);
6709 /* Ask for the fileid of the absent filesystem if mounted_on_fileid
6710 * is not supported */
6711 if (NFS_SERVER(dir
)->attr_bitmask
[1] & FATTR4_WORD1_MOUNTED_ON_FILEID
)
6712 bitmask
[1] |= FATTR4_WORD1_MOUNTED_ON_FILEID
;
6714 bitmask
[0] |= FATTR4_WORD0_FILEID
;
6716 nfs_fattr_init(&fs_locations
->fattr
);
6717 fs_locations
->server
= server
;
6718 fs_locations
->nlocations
= 0;
6719 status
= nfs4_call_sync(client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
6720 dprintk("%s: returned status = %d\n", __func__
, status
);
6724 int nfs4_proc_fs_locations(struct rpc_clnt
*client
, struct inode
*dir
,
6725 const struct qstr
*name
,
6726 struct nfs4_fs_locations
*fs_locations
,
6729 struct nfs4_exception exception
= { };
6732 err
= _nfs4_proc_fs_locations(client
, dir
, name
,
6733 fs_locations
, page
);
6734 trace_nfs4_get_fs_locations(dir
, name
, err
);
6735 err
= nfs4_handle_exception(NFS_SERVER(dir
), err
,
6737 } while (exception
.retry
);
6742 * This operation also signals the server that this client is
6743 * performing migration recovery. The server can stop returning
6744 * NFS4ERR_LEASE_MOVED to this client. A RENEW operation is
6745 * appended to this compound to identify the client ID which is
6746 * performing recovery.
6748 static int _nfs40_proc_get_locations(struct inode
*inode
,
6749 struct nfs4_fs_locations
*locations
,
6750 struct page
*page
, struct rpc_cred
*cred
)
6752 struct nfs_server
*server
= NFS_SERVER(inode
);
6753 struct rpc_clnt
*clnt
= server
->client
;
6755 [0] = FATTR4_WORD0_FSID
| FATTR4_WORD0_FS_LOCATIONS
,
6757 struct nfs4_fs_locations_arg args
= {
6758 .clientid
= server
->nfs_client
->cl_clientid
,
6759 .fh
= NFS_FH(inode
),
6762 .migration
= 1, /* skip LOOKUP */
6763 .renew
= 1, /* append RENEW */
6765 struct nfs4_fs_locations_res res
= {
6766 .fs_locations
= locations
,
6770 struct rpc_message msg
= {
6771 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_FS_LOCATIONS
],
6776 unsigned long now
= jiffies
;
6779 nfs_fattr_init(&locations
->fattr
);
6780 locations
->server
= server
;
6781 locations
->nlocations
= 0;
6783 nfs4_init_sequence(&args
.seq_args
, &res
.seq_res
, 0);
6784 nfs4_set_sequence_privileged(&args
.seq_args
);
6785 status
= nfs4_call_sync_sequence(clnt
, server
, &msg
,
6786 &args
.seq_args
, &res
.seq_res
);
6790 renew_lease(server
, now
);
6794 #ifdef CONFIG_NFS_V4_1
6797 * This operation also signals the server that this client is
6798 * performing migration recovery. The server can stop asserting
6799 * SEQ4_STATUS_LEASE_MOVED for this client. The client ID
6800 * performing this operation is identified in the SEQUENCE
6801 * operation in this compound.
6803 * When the client supports GETATTR(fs_locations_info), it can
6804 * be plumbed in here.
6806 static int _nfs41_proc_get_locations(struct inode
*inode
,
6807 struct nfs4_fs_locations
*locations
,
6808 struct page
*page
, struct rpc_cred
*cred
)
6810 struct nfs_server
*server
= NFS_SERVER(inode
);
6811 struct rpc_clnt
*clnt
= server
->client
;
6813 [0] = FATTR4_WORD0_FSID
| FATTR4_WORD0_FS_LOCATIONS
,
6815 struct nfs4_fs_locations_arg args
= {
6816 .fh
= NFS_FH(inode
),
6819 .migration
= 1, /* skip LOOKUP */
6821 struct nfs4_fs_locations_res res
= {
6822 .fs_locations
= locations
,
6825 struct rpc_message msg
= {
6826 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_FS_LOCATIONS
],
6833 nfs_fattr_init(&locations
->fattr
);
6834 locations
->server
= server
;
6835 locations
->nlocations
= 0;
6837 nfs4_init_sequence(&args
.seq_args
, &res
.seq_res
, 0);
6838 nfs4_set_sequence_privileged(&args
.seq_args
);
6839 status
= nfs4_call_sync_sequence(clnt
, server
, &msg
,
6840 &args
.seq_args
, &res
.seq_res
);
6841 if (status
== NFS4_OK
&&
6842 res
.seq_res
.sr_status_flags
& SEQ4_STATUS_LEASE_MOVED
)
6843 status
= -NFS4ERR_LEASE_MOVED
;
6847 #endif /* CONFIG_NFS_V4_1 */
6850 * nfs4_proc_get_locations - discover locations for a migrated FSID
6851 * @inode: inode on FSID that is migrating
6852 * @locations: result of query
6854 * @cred: credential to use for this operation
6856 * Returns NFS4_OK on success, a negative NFS4ERR status code if the
6857 * operation failed, or a negative errno if a local error occurred.
6859 * On success, "locations" is filled in, but if the server has
6860 * no locations information, NFS_ATTR_FATTR_V4_LOCATIONS is not
6863 * -NFS4ERR_LEASE_MOVED is returned if the server still has leases
6864 * from this client that require migration recovery.
6866 int nfs4_proc_get_locations(struct inode
*inode
,
6867 struct nfs4_fs_locations
*locations
,
6868 struct page
*page
, struct rpc_cred
*cred
)
6870 struct nfs_server
*server
= NFS_SERVER(inode
);
6871 struct nfs_client
*clp
= server
->nfs_client
;
6872 const struct nfs4_mig_recovery_ops
*ops
=
6873 clp
->cl_mvops
->mig_recovery_ops
;
6874 struct nfs4_exception exception
= { };
6877 dprintk("%s: FSID %llx:%llx on \"%s\"\n", __func__
,
6878 (unsigned long long)server
->fsid
.major
,
6879 (unsigned long long)server
->fsid
.minor
,
6881 nfs_display_fhandle(NFS_FH(inode
), __func__
);
6884 status
= ops
->get_locations(inode
, locations
, page
, cred
);
6885 if (status
!= -NFS4ERR_DELAY
)
6887 nfs4_handle_exception(server
, status
, &exception
);
6888 } while (exception
.retry
);
6893 * This operation also signals the server that this client is
6894 * performing "lease moved" recovery. The server can stop
6895 * returning NFS4ERR_LEASE_MOVED to this client. A RENEW operation
6896 * is appended to this compound to identify the client ID which is
6897 * performing recovery.
6899 static int _nfs40_proc_fsid_present(struct inode
*inode
, struct rpc_cred
*cred
)
6901 struct nfs_server
*server
= NFS_SERVER(inode
);
6902 struct nfs_client
*clp
= NFS_SERVER(inode
)->nfs_client
;
6903 struct rpc_clnt
*clnt
= server
->client
;
6904 struct nfs4_fsid_present_arg args
= {
6905 .fh
= NFS_FH(inode
),
6906 .clientid
= clp
->cl_clientid
,
6907 .renew
= 1, /* append RENEW */
6909 struct nfs4_fsid_present_res res
= {
6912 struct rpc_message msg
= {
6913 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_FSID_PRESENT
],
6918 unsigned long now
= jiffies
;
6921 res
.fh
= nfs_alloc_fhandle();
6925 nfs4_init_sequence(&args
.seq_args
, &res
.seq_res
, 0);
6926 nfs4_set_sequence_privileged(&args
.seq_args
);
6927 status
= nfs4_call_sync_sequence(clnt
, server
, &msg
,
6928 &args
.seq_args
, &res
.seq_res
);
6929 nfs_free_fhandle(res
.fh
);
6933 do_renew_lease(clp
, now
);
6937 #ifdef CONFIG_NFS_V4_1
6940 * This operation also signals the server that this client is
6941 * performing "lease moved" recovery. The server can stop asserting
6942 * SEQ4_STATUS_LEASE_MOVED for this client. The client ID performing
6943 * this operation is identified in the SEQUENCE operation in this
6946 static int _nfs41_proc_fsid_present(struct inode
*inode
, struct rpc_cred
*cred
)
6948 struct nfs_server
*server
= NFS_SERVER(inode
);
6949 struct rpc_clnt
*clnt
= server
->client
;
6950 struct nfs4_fsid_present_arg args
= {
6951 .fh
= NFS_FH(inode
),
6953 struct nfs4_fsid_present_res res
= {
6955 struct rpc_message msg
= {
6956 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_FSID_PRESENT
],
6963 res
.fh
= nfs_alloc_fhandle();
6967 nfs4_init_sequence(&args
.seq_args
, &res
.seq_res
, 0);
6968 nfs4_set_sequence_privileged(&args
.seq_args
);
6969 status
= nfs4_call_sync_sequence(clnt
, server
, &msg
,
6970 &args
.seq_args
, &res
.seq_res
);
6971 nfs_free_fhandle(res
.fh
);
6972 if (status
== NFS4_OK
&&
6973 res
.seq_res
.sr_status_flags
& SEQ4_STATUS_LEASE_MOVED
)
6974 status
= -NFS4ERR_LEASE_MOVED
;
6978 #endif /* CONFIG_NFS_V4_1 */
6981 * nfs4_proc_fsid_present - Is this FSID present or absent on server?
6982 * @inode: inode on FSID to check
6983 * @cred: credential to use for this operation
6985 * Server indicates whether the FSID is present, moved, or not
6986 * recognized. This operation is necessary to clear a LEASE_MOVED
6987 * condition for this client ID.
6989 * Returns NFS4_OK if the FSID is present on this server,
6990 * -NFS4ERR_MOVED if the FSID is no longer present, a negative
6991 * NFS4ERR code if some error occurred on the server, or a
6992 * negative errno if a local failure occurred.
6994 int nfs4_proc_fsid_present(struct inode
*inode
, struct rpc_cred
*cred
)
6996 struct nfs_server
*server
= NFS_SERVER(inode
);
6997 struct nfs_client
*clp
= server
->nfs_client
;
6998 const struct nfs4_mig_recovery_ops
*ops
=
6999 clp
->cl_mvops
->mig_recovery_ops
;
7000 struct nfs4_exception exception
= { };
7003 dprintk("%s: FSID %llx:%llx on \"%s\"\n", __func__
,
7004 (unsigned long long)server
->fsid
.major
,
7005 (unsigned long long)server
->fsid
.minor
,
7007 nfs_display_fhandle(NFS_FH(inode
), __func__
);
7010 status
= ops
->fsid_present(inode
, cred
);
7011 if (status
!= -NFS4ERR_DELAY
)
7013 nfs4_handle_exception(server
, status
, &exception
);
7014 } while (exception
.retry
);
7019 * If 'use_integrity' is true and the state managment nfs_client
7020 * cl_rpcclient is using krb5i/p, use the integrity protected cl_rpcclient
7021 * and the machine credential as per RFC3530bis and RFC5661 Security
7022 * Considerations sections. Otherwise, just use the user cred with the
7023 * filesystem's rpc_client.
7025 static int _nfs4_proc_secinfo(struct inode
*dir
, const struct qstr
*name
, struct nfs4_secinfo_flavors
*flavors
, bool use_integrity
)
7028 struct nfs4_secinfo_arg args
= {
7029 .dir_fh
= NFS_FH(dir
),
7032 struct nfs4_secinfo_res res
= {
7035 struct rpc_message msg
= {
7036 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SECINFO
],
7040 struct rpc_clnt
*clnt
= NFS_SERVER(dir
)->client
;
7041 struct rpc_cred
*cred
= NULL
;
7043 if (use_integrity
) {
7044 clnt
= NFS_SERVER(dir
)->nfs_client
->cl_rpcclient
;
7045 cred
= nfs4_get_clid_cred(NFS_SERVER(dir
)->nfs_client
);
7046 msg
.rpc_cred
= cred
;
7049 dprintk("NFS call secinfo %s\n", name
->name
);
7051 nfs4_state_protect(NFS_SERVER(dir
)->nfs_client
,
7052 NFS_SP4_MACH_CRED_SECINFO
, &clnt
, &msg
);
7054 status
= nfs4_call_sync(clnt
, NFS_SERVER(dir
), &msg
, &args
.seq_args
,
7056 dprintk("NFS reply secinfo: %d\n", status
);
7064 int nfs4_proc_secinfo(struct inode
*dir
, const struct qstr
*name
,
7065 struct nfs4_secinfo_flavors
*flavors
)
7067 struct nfs4_exception exception
= { };
7070 err
= -NFS4ERR_WRONGSEC
;
7072 /* try to use integrity protection with machine cred */
7073 if (_nfs4_is_integrity_protected(NFS_SERVER(dir
)->nfs_client
))
7074 err
= _nfs4_proc_secinfo(dir
, name
, flavors
, true);
7077 * if unable to use integrity protection, or SECINFO with
7078 * integrity protection returns NFS4ERR_WRONGSEC (which is
7079 * disallowed by spec, but exists in deployed servers) use
7080 * the current filesystem's rpc_client and the user cred.
7082 if (err
== -NFS4ERR_WRONGSEC
)
7083 err
= _nfs4_proc_secinfo(dir
, name
, flavors
, false);
7085 trace_nfs4_secinfo(dir
, name
, err
);
7086 err
= nfs4_handle_exception(NFS_SERVER(dir
), err
,
7088 } while (exception
.retry
);
7092 #ifdef CONFIG_NFS_V4_1
7094 * Check the exchange flags returned by the server for invalid flags, having
7095 * both PNFS and NON_PNFS flags set, and not having one of NON_PNFS, PNFS, or
7098 static int nfs4_check_cl_exchange_flags(u32 flags
)
7100 if (flags
& ~EXCHGID4_FLAG_MASK_R
)
7102 if ((flags
& EXCHGID4_FLAG_USE_PNFS_MDS
) &&
7103 (flags
& EXCHGID4_FLAG_USE_NON_PNFS
))
7105 if (!(flags
& (EXCHGID4_FLAG_MASK_PNFS
)))
7109 return -NFS4ERR_INVAL
;
7113 nfs41_same_server_scope(struct nfs41_server_scope
*a
,
7114 struct nfs41_server_scope
*b
)
7116 if (a
->server_scope_sz
!= b
->server_scope_sz
)
7118 return memcmp(a
->server_scope
, b
->server_scope
, a
->server_scope_sz
) == 0;
7122 nfs4_bind_one_conn_to_session_done(struct rpc_task
*task
, void *calldata
)
7126 static const struct rpc_call_ops nfs4_bind_one_conn_to_session_ops
= {
7127 .rpc_call_done
= &nfs4_bind_one_conn_to_session_done
,
7131 * nfs4_proc_bind_one_conn_to_session()
7133 * The 4.1 client currently uses the same TCP connection for the
7134 * fore and backchannel.
7137 int nfs4_proc_bind_one_conn_to_session(struct rpc_clnt
*clnt
,
7138 struct rpc_xprt
*xprt
,
7139 struct nfs_client
*clp
,
7140 struct rpc_cred
*cred
)
7143 struct nfs41_bind_conn_to_session_args args
= {
7145 .dir
= NFS4_CDFC4_FORE_OR_BOTH
,
7147 struct nfs41_bind_conn_to_session_res res
;
7148 struct rpc_message msg
= {
7150 &nfs4_procedures
[NFSPROC4_CLNT_BIND_CONN_TO_SESSION
],
7155 struct rpc_task_setup task_setup_data
= {
7158 .callback_ops
= &nfs4_bind_one_conn_to_session_ops
,
7159 .rpc_message
= &msg
,
7160 .flags
= RPC_TASK_TIMEOUT
,
7162 struct rpc_task
*task
;
7164 nfs4_copy_sessionid(&args
.sessionid
, &clp
->cl_session
->sess_id
);
7165 if (!(clp
->cl_session
->flags
& SESSION4_BACK_CHAN
))
7166 args
.dir
= NFS4_CDFC4_FORE
;
7168 /* Do not set the backchannel flag unless this is clnt->cl_xprt */
7169 if (xprt
!= rcu_access_pointer(clnt
->cl_xprt
))
7170 args
.dir
= NFS4_CDFC4_FORE
;
7172 task
= rpc_run_task(&task_setup_data
);
7173 if (!IS_ERR(task
)) {
7174 status
= task
->tk_status
;
7177 status
= PTR_ERR(task
);
7178 trace_nfs4_bind_conn_to_session(clp
, status
);
7180 if (memcmp(res
.sessionid
.data
,
7181 clp
->cl_session
->sess_id
.data
, NFS4_MAX_SESSIONID_LEN
)) {
7182 dprintk("NFS: %s: Session ID mismatch\n", __func__
);
7185 if ((res
.dir
& args
.dir
) != res
.dir
|| res
.dir
== 0) {
7186 dprintk("NFS: %s: Unexpected direction from server\n",
7190 if (res
.use_conn_in_rdma_mode
!= args
.use_conn_in_rdma_mode
) {
7191 dprintk("NFS: %s: Server returned RDMA mode = true\n",
7200 struct rpc_bind_conn_calldata
{
7201 struct nfs_client
*clp
;
7202 struct rpc_cred
*cred
;
7206 nfs4_proc_bind_conn_to_session_callback(struct rpc_clnt
*clnt
,
7207 struct rpc_xprt
*xprt
,
7210 struct rpc_bind_conn_calldata
*p
= calldata
;
7212 return nfs4_proc_bind_one_conn_to_session(clnt
, xprt
, p
->clp
, p
->cred
);
7215 int nfs4_proc_bind_conn_to_session(struct nfs_client
*clp
, struct rpc_cred
*cred
)
7217 struct rpc_bind_conn_calldata data
= {
7221 return rpc_clnt_iterate_for_each_xprt(clp
->cl_rpcclient
,
7222 nfs4_proc_bind_conn_to_session_callback
, &data
);
7226 * Minimum set of SP4_MACH_CRED operations from RFC 5661 in the enforce map
7227 * and operations we'd like to see to enable certain features in the allow map
7229 static const struct nfs41_state_protection nfs4_sp4_mach_cred_request
= {
7230 .how
= SP4_MACH_CRED
,
7231 .enforce
.u
.words
= {
7232 [1] = 1 << (OP_BIND_CONN_TO_SESSION
- 32) |
7233 1 << (OP_EXCHANGE_ID
- 32) |
7234 1 << (OP_CREATE_SESSION
- 32) |
7235 1 << (OP_DESTROY_SESSION
- 32) |
7236 1 << (OP_DESTROY_CLIENTID
- 32)
7239 [0] = 1 << (OP_CLOSE
) |
7240 1 << (OP_OPEN_DOWNGRADE
) |
7242 1 << (OP_DELEGRETURN
) |
7244 [1] = 1 << (OP_SECINFO
- 32) |
7245 1 << (OP_SECINFO_NO_NAME
- 32) |
7246 1 << (OP_LAYOUTRETURN
- 32) |
7247 1 << (OP_TEST_STATEID
- 32) |
7248 1 << (OP_FREE_STATEID
- 32) |
7249 1 << (OP_WRITE
- 32)
7254 * Select the state protection mode for client `clp' given the server results
7255 * from exchange_id in `sp'.
7257 * Returns 0 on success, negative errno otherwise.
7259 static int nfs4_sp4_select_mode(struct nfs_client
*clp
,
7260 struct nfs41_state_protection
*sp
)
7262 static const u32 supported_enforce
[NFS4_OP_MAP_NUM_WORDS
] = {
7263 [1] = 1 << (OP_BIND_CONN_TO_SESSION
- 32) |
7264 1 << (OP_EXCHANGE_ID
- 32) |
7265 1 << (OP_CREATE_SESSION
- 32) |
7266 1 << (OP_DESTROY_SESSION
- 32) |
7267 1 << (OP_DESTROY_CLIENTID
- 32)
7271 if (sp
->how
== SP4_MACH_CRED
) {
7272 /* Print state protect result */
7273 dfprintk(MOUNT
, "Server SP4_MACH_CRED support:\n");
7274 for (i
= 0; i
<= LAST_NFS4_OP
; i
++) {
7275 if (test_bit(i
, sp
->enforce
.u
.longs
))
7276 dfprintk(MOUNT
, " enforce op %d\n", i
);
7277 if (test_bit(i
, sp
->allow
.u
.longs
))
7278 dfprintk(MOUNT
, " allow op %d\n", i
);
7281 /* make sure nothing is on enforce list that isn't supported */
7282 for (i
= 0; i
< NFS4_OP_MAP_NUM_WORDS
; i
++) {
7283 if (sp
->enforce
.u
.words
[i
] & ~supported_enforce
[i
]) {
7284 dfprintk(MOUNT
, "sp4_mach_cred: disabled\n");
7290 * Minimal mode - state operations are allowed to use machine
7291 * credential. Note this already happens by default, so the
7292 * client doesn't have to do anything more than the negotiation.
7294 * NOTE: we don't care if EXCHANGE_ID is in the list -
7295 * we're already using the machine cred for exchange_id
7296 * and will never use a different cred.
7298 if (test_bit(OP_BIND_CONN_TO_SESSION
, sp
->enforce
.u
.longs
) &&
7299 test_bit(OP_CREATE_SESSION
, sp
->enforce
.u
.longs
) &&
7300 test_bit(OP_DESTROY_SESSION
, sp
->enforce
.u
.longs
) &&
7301 test_bit(OP_DESTROY_CLIENTID
, sp
->enforce
.u
.longs
)) {
7302 dfprintk(MOUNT
, "sp4_mach_cred:\n");
7303 dfprintk(MOUNT
, " minimal mode enabled\n");
7304 set_bit(NFS_SP4_MACH_CRED_MINIMAL
, &clp
->cl_sp4_flags
);
7306 dfprintk(MOUNT
, "sp4_mach_cred: disabled\n");
7310 if (test_bit(OP_CLOSE
, sp
->allow
.u
.longs
) &&
7311 test_bit(OP_OPEN_DOWNGRADE
, sp
->allow
.u
.longs
) &&
7312 test_bit(OP_DELEGRETURN
, sp
->allow
.u
.longs
) &&
7313 test_bit(OP_LOCKU
, sp
->allow
.u
.longs
)) {
7314 dfprintk(MOUNT
, " cleanup mode enabled\n");
7315 set_bit(NFS_SP4_MACH_CRED_CLEANUP
, &clp
->cl_sp4_flags
);
7318 if (test_bit(OP_LAYOUTRETURN
, sp
->allow
.u
.longs
)) {
7319 dfprintk(MOUNT
, " pnfs cleanup mode enabled\n");
7320 set_bit(NFS_SP4_MACH_CRED_PNFS_CLEANUP
,
7321 &clp
->cl_sp4_flags
);
7324 if (test_bit(OP_SECINFO
, sp
->allow
.u
.longs
) &&
7325 test_bit(OP_SECINFO_NO_NAME
, sp
->allow
.u
.longs
)) {
7326 dfprintk(MOUNT
, " secinfo mode enabled\n");
7327 set_bit(NFS_SP4_MACH_CRED_SECINFO
, &clp
->cl_sp4_flags
);
7330 if (test_bit(OP_TEST_STATEID
, sp
->allow
.u
.longs
) &&
7331 test_bit(OP_FREE_STATEID
, sp
->allow
.u
.longs
)) {
7332 dfprintk(MOUNT
, " stateid mode enabled\n");
7333 set_bit(NFS_SP4_MACH_CRED_STATEID
, &clp
->cl_sp4_flags
);
7336 if (test_bit(OP_WRITE
, sp
->allow
.u
.longs
)) {
7337 dfprintk(MOUNT
, " write mode enabled\n");
7338 set_bit(NFS_SP4_MACH_CRED_WRITE
, &clp
->cl_sp4_flags
);
7341 if (test_bit(OP_COMMIT
, sp
->allow
.u
.longs
)) {
7342 dfprintk(MOUNT
, " commit mode enabled\n");
7343 set_bit(NFS_SP4_MACH_CRED_COMMIT
, &clp
->cl_sp4_flags
);
7350 struct nfs41_exchange_id_data
{
7351 struct nfs41_exchange_id_res res
;
7352 struct nfs41_exchange_id_args args
;
7353 struct rpc_xprt
*xprt
;
7357 static void nfs4_exchange_id_done(struct rpc_task
*task
, void *data
)
7359 struct nfs41_exchange_id_data
*cdata
=
7360 (struct nfs41_exchange_id_data
*)data
;
7361 struct nfs_client
*clp
= cdata
->args
.client
;
7362 int status
= task
->tk_status
;
7364 trace_nfs4_exchange_id(clp
, status
);
7367 status
= nfs4_check_cl_exchange_flags(cdata
->res
.flags
);
7369 if (cdata
->xprt
&& status
== 0) {
7370 status
= nfs4_detect_session_trunking(clp
, &cdata
->res
,
7376 status
= nfs4_sp4_select_mode(clp
, &cdata
->res
.state_protect
);
7379 clp
->cl_clientid
= cdata
->res
.clientid
;
7380 clp
->cl_exchange_flags
= cdata
->res
.flags
;
7381 /* Client ID is not confirmed */
7382 if (!(cdata
->res
.flags
& EXCHGID4_FLAG_CONFIRMED_R
)) {
7383 clear_bit(NFS4_SESSION_ESTABLISHED
,
7384 &clp
->cl_session
->session_state
);
7385 clp
->cl_seqid
= cdata
->res
.seqid
;
7388 kfree(clp
->cl_serverowner
);
7389 clp
->cl_serverowner
= cdata
->res
.server_owner
;
7390 cdata
->res
.server_owner
= NULL
;
7392 /* use the most recent implementation id */
7393 kfree(clp
->cl_implid
);
7394 clp
->cl_implid
= cdata
->res
.impl_id
;
7395 cdata
->res
.impl_id
= NULL
;
7397 if (clp
->cl_serverscope
!= NULL
&&
7398 !nfs41_same_server_scope(clp
->cl_serverscope
,
7399 cdata
->res
.server_scope
)) {
7400 dprintk("%s: server_scope mismatch detected\n",
7402 set_bit(NFS4CLNT_SERVER_SCOPE_MISMATCH
, &clp
->cl_state
);
7403 kfree(clp
->cl_serverscope
);
7404 clp
->cl_serverscope
= NULL
;
7407 if (clp
->cl_serverscope
== NULL
) {
7408 clp
->cl_serverscope
= cdata
->res
.server_scope
;
7409 cdata
->res
.server_scope
= NULL
;
7411 /* Save the EXCHANGE_ID verifier session trunk tests */
7412 memcpy(clp
->cl_confirm
.data
, cdata
->args
.verifier
->data
,
7413 sizeof(clp
->cl_confirm
.data
));
7416 cdata
->rpc_status
= status
;
7420 static void nfs4_exchange_id_release(void *data
)
7422 struct nfs41_exchange_id_data
*cdata
=
7423 (struct nfs41_exchange_id_data
*)data
;
7426 xprt_put(cdata
->xprt
);
7427 rpc_clnt_xprt_switch_put(cdata
->args
.client
->cl_rpcclient
);
7429 nfs_put_client(cdata
->args
.client
);
7430 kfree(cdata
->res
.impl_id
);
7431 kfree(cdata
->res
.server_scope
);
7432 kfree(cdata
->res
.server_owner
);
7436 static const struct rpc_call_ops nfs4_exchange_id_call_ops
= {
7437 .rpc_call_done
= nfs4_exchange_id_done
,
7438 .rpc_release
= nfs4_exchange_id_release
,
7442 * _nfs4_proc_exchange_id()
7444 * Wrapper for EXCHANGE_ID operation.
7446 static int _nfs4_proc_exchange_id(struct nfs_client
*clp
, struct rpc_cred
*cred
,
7447 u32 sp4_how
, struct rpc_xprt
*xprt
)
7449 nfs4_verifier verifier
;
7450 struct rpc_message msg
= {
7451 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_EXCHANGE_ID
],
7454 struct rpc_task_setup task_setup_data
= {
7455 .rpc_client
= clp
->cl_rpcclient
,
7456 .callback_ops
= &nfs4_exchange_id_call_ops
,
7457 .rpc_message
= &msg
,
7458 .flags
= RPC_TASK_ASYNC
| RPC_TASK_TIMEOUT
,
7460 struct nfs41_exchange_id_data
*calldata
;
7461 struct rpc_task
*task
;
7464 if (!atomic_inc_not_zero(&clp
->cl_count
))
7467 calldata
= kzalloc(sizeof(*calldata
), GFP_NOFS
);
7469 nfs_put_client(clp
);
7474 nfs4_init_boot_verifier(clp
, &verifier
);
7476 status
= nfs4_init_uniform_client_string(clp
);
7480 calldata
->res
.server_owner
= kzalloc(sizeof(struct nfs41_server_owner
),
7483 if (unlikely(calldata
->res
.server_owner
== NULL
))
7486 calldata
->res
.server_scope
= kzalloc(sizeof(struct nfs41_server_scope
),
7488 if (unlikely(calldata
->res
.server_scope
== NULL
))
7489 goto out_server_owner
;
7491 calldata
->res
.impl_id
= kzalloc(sizeof(struct nfs41_impl_id
), GFP_NOFS
);
7492 if (unlikely(calldata
->res
.impl_id
== NULL
))
7493 goto out_server_scope
;
7497 calldata
->args
.state_protect
.how
= SP4_NONE
;
7501 calldata
->args
.state_protect
= nfs4_sp4_mach_cred_request
;
7511 calldata
->xprt
= xprt
;
7512 task_setup_data
.rpc_xprt
= xprt
;
7513 task_setup_data
.flags
=
7514 RPC_TASK_SOFT
|RPC_TASK_SOFTCONN
|RPC_TASK_ASYNC
;
7515 calldata
->args
.verifier
= &clp
->cl_confirm
;
7517 calldata
->args
.verifier
= &verifier
;
7519 calldata
->args
.client
= clp
;
7520 #ifdef CONFIG_NFS_V4_1_MIGRATION
7521 calldata
->args
.flags
= EXCHGID4_FLAG_SUPP_MOVED_REFER
|
7522 EXCHGID4_FLAG_BIND_PRINC_STATEID
|
7523 EXCHGID4_FLAG_SUPP_MOVED_MIGR
,
7525 calldata
->args
.flags
= EXCHGID4_FLAG_SUPP_MOVED_REFER
|
7526 EXCHGID4_FLAG_BIND_PRINC_STATEID
,
7528 msg
.rpc_argp
= &calldata
->args
;
7529 msg
.rpc_resp
= &calldata
->res
;
7530 task_setup_data
.callback_data
= calldata
;
7532 task
= rpc_run_task(&task_setup_data
);
7534 return PTR_ERR(task
);
7537 status
= rpc_wait_for_completion_task(task
);
7539 status
= calldata
->rpc_status
;
7540 } else /* session trunking test */
7541 status
= calldata
->rpc_status
;
7548 kfree(calldata
->res
.impl_id
);
7550 kfree(calldata
->res
.server_scope
);
7552 kfree(calldata
->res
.server_owner
);
7555 nfs_put_client(clp
);
7560 * nfs4_proc_exchange_id()
7562 * Returns zero, a negative errno, or a negative NFS4ERR status code.
7564 * Since the clientid has expired, all compounds using sessions
7565 * associated with the stale clientid will be returning
7566 * NFS4ERR_BADSESSION in the sequence operation, and will therefore
7567 * be in some phase of session reset.
7569 * Will attempt to negotiate SP4_MACH_CRED if krb5i / krb5p auth is used.
7571 int nfs4_proc_exchange_id(struct nfs_client
*clp
, struct rpc_cred
*cred
)
7573 rpc_authflavor_t authflavor
= clp
->cl_rpcclient
->cl_auth
->au_flavor
;
7576 /* try SP4_MACH_CRED if krb5i/p */
7577 if (authflavor
== RPC_AUTH_GSS_KRB5I
||
7578 authflavor
== RPC_AUTH_GSS_KRB5P
) {
7579 status
= _nfs4_proc_exchange_id(clp
, cred
, SP4_MACH_CRED
, NULL
);
7585 return _nfs4_proc_exchange_id(clp
, cred
, SP4_NONE
, NULL
);
7589 * nfs4_test_session_trunk
7591 * This is an add_xprt_test() test function called from
7592 * rpc_clnt_setup_test_and_add_xprt.
7594 * The rpc_xprt_switch is referrenced by rpc_clnt_setup_test_and_add_xprt
7595 * and is dereferrenced in nfs4_exchange_id_release
7597 * Upon success, add the new transport to the rpc_clnt
7599 * @clnt: struct rpc_clnt to get new transport
7600 * @xprt: the rpc_xprt to test
7601 * @data: call data for _nfs4_proc_exchange_id.
7603 int nfs4_test_session_trunk(struct rpc_clnt
*clnt
, struct rpc_xprt
*xprt
,
7606 struct nfs4_add_xprt_data
*adata
= (struct nfs4_add_xprt_data
*)data
;
7609 dprintk("--> %s try %s\n", __func__
,
7610 xprt
->address_strings
[RPC_DISPLAY_ADDR
]);
7612 sp4_how
= (adata
->clp
->cl_sp4_flags
== 0 ? SP4_NONE
: SP4_MACH_CRED
);
7614 /* Test connection for session trunking. Async exchange_id call */
7615 return _nfs4_proc_exchange_id(adata
->clp
, adata
->cred
, sp4_how
, xprt
);
7617 EXPORT_SYMBOL_GPL(nfs4_test_session_trunk
);
7619 static int _nfs4_proc_destroy_clientid(struct nfs_client
*clp
,
7620 struct rpc_cred
*cred
)
7622 struct rpc_message msg
= {
7623 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_DESTROY_CLIENTID
],
7629 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
7630 trace_nfs4_destroy_clientid(clp
, status
);
7632 dprintk("NFS: Got error %d from the server %s on "
7633 "DESTROY_CLIENTID.", status
, clp
->cl_hostname
);
7637 static int nfs4_proc_destroy_clientid(struct nfs_client
*clp
,
7638 struct rpc_cred
*cred
)
7643 for (loop
= NFS4_MAX_LOOP_ON_RECOVER
; loop
!= 0; loop
--) {
7644 ret
= _nfs4_proc_destroy_clientid(clp
, cred
);
7646 case -NFS4ERR_DELAY
:
7647 case -NFS4ERR_CLIENTID_BUSY
:
7657 int nfs4_destroy_clientid(struct nfs_client
*clp
)
7659 struct rpc_cred
*cred
;
7662 if (clp
->cl_mvops
->minor_version
< 1)
7664 if (clp
->cl_exchange_flags
== 0)
7666 if (clp
->cl_preserve_clid
)
7668 cred
= nfs4_get_clid_cred(clp
);
7669 ret
= nfs4_proc_destroy_clientid(clp
, cred
);
7674 case -NFS4ERR_STALE_CLIENTID
:
7675 clp
->cl_exchange_flags
= 0;
7681 struct nfs4_get_lease_time_data
{
7682 struct nfs4_get_lease_time_args
*args
;
7683 struct nfs4_get_lease_time_res
*res
;
7684 struct nfs_client
*clp
;
7687 static void nfs4_get_lease_time_prepare(struct rpc_task
*task
,
7690 struct nfs4_get_lease_time_data
*data
=
7691 (struct nfs4_get_lease_time_data
*)calldata
;
7693 dprintk("--> %s\n", __func__
);
7694 /* just setup sequence, do not trigger session recovery
7695 since we're invoked within one */
7696 nfs4_setup_sequence(data
->clp
,
7697 &data
->args
->la_seq_args
,
7698 &data
->res
->lr_seq_res
,
7700 dprintk("<-- %s\n", __func__
);
7704 * Called from nfs4_state_manager thread for session setup, so don't recover
7705 * from sequence operation or clientid errors.
7707 static void nfs4_get_lease_time_done(struct rpc_task
*task
, void *calldata
)
7709 struct nfs4_get_lease_time_data
*data
=
7710 (struct nfs4_get_lease_time_data
*)calldata
;
7712 dprintk("--> %s\n", __func__
);
7713 if (!nfs41_sequence_done(task
, &data
->res
->lr_seq_res
))
7715 switch (task
->tk_status
) {
7716 case -NFS4ERR_DELAY
:
7717 case -NFS4ERR_GRACE
:
7718 dprintk("%s Retry: tk_status %d\n", __func__
, task
->tk_status
);
7719 rpc_delay(task
, NFS4_POLL_RETRY_MIN
);
7720 task
->tk_status
= 0;
7722 case -NFS4ERR_RETRY_UNCACHED_REP
:
7723 rpc_restart_call_prepare(task
);
7726 dprintk("<-- %s\n", __func__
);
7729 static const struct rpc_call_ops nfs4_get_lease_time_ops
= {
7730 .rpc_call_prepare
= nfs4_get_lease_time_prepare
,
7731 .rpc_call_done
= nfs4_get_lease_time_done
,
7734 int nfs4_proc_get_lease_time(struct nfs_client
*clp
, struct nfs_fsinfo
*fsinfo
)
7736 struct rpc_task
*task
;
7737 struct nfs4_get_lease_time_args args
;
7738 struct nfs4_get_lease_time_res res
= {
7739 .lr_fsinfo
= fsinfo
,
7741 struct nfs4_get_lease_time_data data
= {
7746 struct rpc_message msg
= {
7747 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GET_LEASE_TIME
],
7751 struct rpc_task_setup task_setup
= {
7752 .rpc_client
= clp
->cl_rpcclient
,
7753 .rpc_message
= &msg
,
7754 .callback_ops
= &nfs4_get_lease_time_ops
,
7755 .callback_data
= &data
,
7756 .flags
= RPC_TASK_TIMEOUT
,
7760 nfs4_init_sequence(&args
.la_seq_args
, &res
.lr_seq_res
, 0);
7761 nfs4_set_sequence_privileged(&args
.la_seq_args
);
7762 task
= rpc_run_task(&task_setup
);
7765 return PTR_ERR(task
);
7767 status
= task
->tk_status
;
7773 * Initialize the values to be used by the client in CREATE_SESSION
7774 * If nfs4_init_session set the fore channel request and response sizes,
7777 * Set the back channel max_resp_sz_cached to zero to force the client to
7778 * always set csa_cachethis to FALSE because the current implementation
7779 * of the back channel DRC only supports caching the CB_SEQUENCE operation.
7781 static void nfs4_init_channel_attrs(struct nfs41_create_session_args
*args
,
7782 struct rpc_clnt
*clnt
)
7784 unsigned int max_rqst_sz
, max_resp_sz
;
7785 unsigned int max_bc_payload
= rpc_max_bc_payload(clnt
);
7787 max_rqst_sz
= NFS_MAX_FILE_IO_SIZE
+ nfs41_maxwrite_overhead
;
7788 max_resp_sz
= NFS_MAX_FILE_IO_SIZE
+ nfs41_maxread_overhead
;
7790 /* Fore channel attributes */
7791 args
->fc_attrs
.max_rqst_sz
= max_rqst_sz
;
7792 args
->fc_attrs
.max_resp_sz
= max_resp_sz
;
7793 args
->fc_attrs
.max_ops
= NFS4_MAX_OPS
;
7794 args
->fc_attrs
.max_reqs
= max_session_slots
;
7796 dprintk("%s: Fore Channel : max_rqst_sz=%u max_resp_sz=%u "
7797 "max_ops=%u max_reqs=%u\n",
7799 args
->fc_attrs
.max_rqst_sz
, args
->fc_attrs
.max_resp_sz
,
7800 args
->fc_attrs
.max_ops
, args
->fc_attrs
.max_reqs
);
7802 /* Back channel attributes */
7803 args
->bc_attrs
.max_rqst_sz
= max_bc_payload
;
7804 args
->bc_attrs
.max_resp_sz
= max_bc_payload
;
7805 args
->bc_attrs
.max_resp_sz_cached
= 0;
7806 args
->bc_attrs
.max_ops
= NFS4_MAX_BACK_CHANNEL_OPS
;
7807 args
->bc_attrs
.max_reqs
= min_t(unsigned short, max_session_cb_slots
, 1);
7809 dprintk("%s: Back Channel : max_rqst_sz=%u max_resp_sz=%u "
7810 "max_resp_sz_cached=%u max_ops=%u max_reqs=%u\n",
7812 args
->bc_attrs
.max_rqst_sz
, args
->bc_attrs
.max_resp_sz
,
7813 args
->bc_attrs
.max_resp_sz_cached
, args
->bc_attrs
.max_ops
,
7814 args
->bc_attrs
.max_reqs
);
7817 static int nfs4_verify_fore_channel_attrs(struct nfs41_create_session_args
*args
,
7818 struct nfs41_create_session_res
*res
)
7820 struct nfs4_channel_attrs
*sent
= &args
->fc_attrs
;
7821 struct nfs4_channel_attrs
*rcvd
= &res
->fc_attrs
;
7823 if (rcvd
->max_resp_sz
> sent
->max_resp_sz
)
7826 * Our requested max_ops is the minimum we need; we're not
7827 * prepared to break up compounds into smaller pieces than that.
7828 * So, no point even trying to continue if the server won't
7831 if (rcvd
->max_ops
< sent
->max_ops
)
7833 if (rcvd
->max_reqs
== 0)
7835 if (rcvd
->max_reqs
> NFS4_MAX_SLOT_TABLE
)
7836 rcvd
->max_reqs
= NFS4_MAX_SLOT_TABLE
;
7840 static int nfs4_verify_back_channel_attrs(struct nfs41_create_session_args
*args
,
7841 struct nfs41_create_session_res
*res
)
7843 struct nfs4_channel_attrs
*sent
= &args
->bc_attrs
;
7844 struct nfs4_channel_attrs
*rcvd
= &res
->bc_attrs
;
7846 if (!(res
->flags
& SESSION4_BACK_CHAN
))
7848 if (rcvd
->max_rqst_sz
> sent
->max_rqst_sz
)
7850 if (rcvd
->max_resp_sz
< sent
->max_resp_sz
)
7852 if (rcvd
->max_resp_sz_cached
> sent
->max_resp_sz_cached
)
7854 if (rcvd
->max_ops
> sent
->max_ops
)
7856 if (rcvd
->max_reqs
> sent
->max_reqs
)
7862 static int nfs4_verify_channel_attrs(struct nfs41_create_session_args
*args
,
7863 struct nfs41_create_session_res
*res
)
7867 ret
= nfs4_verify_fore_channel_attrs(args
, res
);
7870 return nfs4_verify_back_channel_attrs(args
, res
);
7873 static void nfs4_update_session(struct nfs4_session
*session
,
7874 struct nfs41_create_session_res
*res
)
7876 nfs4_copy_sessionid(&session
->sess_id
, &res
->sessionid
);
7877 /* Mark client id and session as being confirmed */
7878 session
->clp
->cl_exchange_flags
|= EXCHGID4_FLAG_CONFIRMED_R
;
7879 set_bit(NFS4_SESSION_ESTABLISHED
, &session
->session_state
);
7880 session
->flags
= res
->flags
;
7881 memcpy(&session
->fc_attrs
, &res
->fc_attrs
, sizeof(session
->fc_attrs
));
7882 if (res
->flags
& SESSION4_BACK_CHAN
)
7883 memcpy(&session
->bc_attrs
, &res
->bc_attrs
,
7884 sizeof(session
->bc_attrs
));
7887 static int _nfs4_proc_create_session(struct nfs_client
*clp
,
7888 struct rpc_cred
*cred
)
7890 struct nfs4_session
*session
= clp
->cl_session
;
7891 struct nfs41_create_session_args args
= {
7893 .clientid
= clp
->cl_clientid
,
7894 .seqid
= clp
->cl_seqid
,
7895 .cb_program
= NFS4_CALLBACK
,
7897 struct nfs41_create_session_res res
;
7899 struct rpc_message msg
= {
7900 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_CREATE_SESSION
],
7907 nfs4_init_channel_attrs(&args
, clp
->cl_rpcclient
);
7908 args
.flags
= (SESSION4_PERSIST
| SESSION4_BACK_CHAN
);
7910 status
= rpc_call_sync(session
->clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
7911 trace_nfs4_create_session(clp
, status
);
7914 case -NFS4ERR_STALE_CLIENTID
:
7915 case -NFS4ERR_DELAY
:
7924 /* Verify the session's negotiated channel_attrs values */
7925 status
= nfs4_verify_channel_attrs(&args
, &res
);
7926 /* Increment the clientid slot sequence id */
7929 nfs4_update_session(session
, &res
);
7936 * Issues a CREATE_SESSION operation to the server.
7937 * It is the responsibility of the caller to verify the session is
7938 * expired before calling this routine.
7940 int nfs4_proc_create_session(struct nfs_client
*clp
, struct rpc_cred
*cred
)
7944 struct nfs4_session
*session
= clp
->cl_session
;
7946 dprintk("--> %s clp=%p session=%p\n", __func__
, clp
, session
);
7948 status
= _nfs4_proc_create_session(clp
, cred
);
7952 /* Init or reset the session slot tables */
7953 status
= nfs4_setup_session_slot_tables(session
);
7954 dprintk("slot table setup returned %d\n", status
);
7958 ptr
= (unsigned *)&session
->sess_id
.data
[0];
7959 dprintk("%s client>seqid %d sessionid %u:%u:%u:%u\n", __func__
,
7960 clp
->cl_seqid
, ptr
[0], ptr
[1], ptr
[2], ptr
[3]);
7962 dprintk("<-- %s\n", __func__
);
7967 * Issue the over-the-wire RPC DESTROY_SESSION.
7968 * The caller must serialize access to this routine.
7970 int nfs4_proc_destroy_session(struct nfs4_session
*session
,
7971 struct rpc_cred
*cred
)
7973 struct rpc_message msg
= {
7974 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_DESTROY_SESSION
],
7975 .rpc_argp
= session
,
7980 dprintk("--> nfs4_proc_destroy_session\n");
7982 /* session is still being setup */
7983 if (!test_and_clear_bit(NFS4_SESSION_ESTABLISHED
, &session
->session_state
))
7986 status
= rpc_call_sync(session
->clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
7987 trace_nfs4_destroy_session(session
->clp
, status
);
7990 dprintk("NFS: Got error %d from the server on DESTROY_SESSION. "
7991 "Session has been destroyed regardless...\n", status
);
7993 dprintk("<-- nfs4_proc_destroy_session\n");
7998 * Renew the cl_session lease.
8000 struct nfs4_sequence_data
{
8001 struct nfs_client
*clp
;
8002 struct nfs4_sequence_args args
;
8003 struct nfs4_sequence_res res
;
8006 static void nfs41_sequence_release(void *data
)
8008 struct nfs4_sequence_data
*calldata
= data
;
8009 struct nfs_client
*clp
= calldata
->clp
;
8011 if (atomic_read(&clp
->cl_count
) > 1)
8012 nfs4_schedule_state_renewal(clp
);
8013 nfs_put_client(clp
);
8017 static int nfs41_sequence_handle_errors(struct rpc_task
*task
, struct nfs_client
*clp
)
8019 switch(task
->tk_status
) {
8020 case -NFS4ERR_DELAY
:
8021 rpc_delay(task
, NFS4_POLL_RETRY_MAX
);
8024 nfs4_schedule_lease_recovery(clp
);
8029 static void nfs41_sequence_call_done(struct rpc_task
*task
, void *data
)
8031 struct nfs4_sequence_data
*calldata
= data
;
8032 struct nfs_client
*clp
= calldata
->clp
;
8034 if (!nfs41_sequence_done(task
, task
->tk_msg
.rpc_resp
))
8037 trace_nfs4_sequence(clp
, task
->tk_status
);
8038 if (task
->tk_status
< 0) {
8039 dprintk("%s ERROR %d\n", __func__
, task
->tk_status
);
8040 if (atomic_read(&clp
->cl_count
) == 1)
8043 if (nfs41_sequence_handle_errors(task
, clp
) == -EAGAIN
) {
8044 rpc_restart_call_prepare(task
);
8048 dprintk("%s rpc_cred %p\n", __func__
, task
->tk_msg
.rpc_cred
);
8050 dprintk("<-- %s\n", __func__
);
8053 static void nfs41_sequence_prepare(struct rpc_task
*task
, void *data
)
8055 struct nfs4_sequence_data
*calldata
= data
;
8056 struct nfs_client
*clp
= calldata
->clp
;
8057 struct nfs4_sequence_args
*args
;
8058 struct nfs4_sequence_res
*res
;
8060 args
= task
->tk_msg
.rpc_argp
;
8061 res
= task
->tk_msg
.rpc_resp
;
8063 nfs4_setup_sequence(clp
, args
, res
, task
);
8066 static const struct rpc_call_ops nfs41_sequence_ops
= {
8067 .rpc_call_done
= nfs41_sequence_call_done
,
8068 .rpc_call_prepare
= nfs41_sequence_prepare
,
8069 .rpc_release
= nfs41_sequence_release
,
8072 static struct rpc_task
*_nfs41_proc_sequence(struct nfs_client
*clp
,
8073 struct rpc_cred
*cred
,
8076 struct nfs4_sequence_data
*calldata
;
8077 struct rpc_message msg
= {
8078 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SEQUENCE
],
8081 struct rpc_task_setup task_setup_data
= {
8082 .rpc_client
= clp
->cl_rpcclient
,
8083 .rpc_message
= &msg
,
8084 .callback_ops
= &nfs41_sequence_ops
,
8085 .flags
= RPC_TASK_ASYNC
| RPC_TASK_TIMEOUT
,
8088 if (!atomic_inc_not_zero(&clp
->cl_count
))
8089 return ERR_PTR(-EIO
);
8090 calldata
= kzalloc(sizeof(*calldata
), GFP_NOFS
);
8091 if (calldata
== NULL
) {
8092 nfs_put_client(clp
);
8093 return ERR_PTR(-ENOMEM
);
8095 nfs4_init_sequence(&calldata
->args
, &calldata
->res
, 0);
8097 nfs4_set_sequence_privileged(&calldata
->args
);
8098 msg
.rpc_argp
= &calldata
->args
;
8099 msg
.rpc_resp
= &calldata
->res
;
8100 calldata
->clp
= clp
;
8101 task_setup_data
.callback_data
= calldata
;
8103 return rpc_run_task(&task_setup_data
);
8106 static int nfs41_proc_async_sequence(struct nfs_client
*clp
, struct rpc_cred
*cred
, unsigned renew_flags
)
8108 struct rpc_task
*task
;
8111 if ((renew_flags
& NFS4_RENEW_TIMEOUT
) == 0)
8113 task
= _nfs41_proc_sequence(clp
, cred
, false);
8115 ret
= PTR_ERR(task
);
8117 rpc_put_task_async(task
);
8118 dprintk("<-- %s status=%d\n", __func__
, ret
);
8122 static int nfs4_proc_sequence(struct nfs_client
*clp
, struct rpc_cred
*cred
)
8124 struct rpc_task
*task
;
8127 task
= _nfs41_proc_sequence(clp
, cred
, true);
8129 ret
= PTR_ERR(task
);
8132 ret
= rpc_wait_for_completion_task(task
);
8134 ret
= task
->tk_status
;
8137 dprintk("<-- %s status=%d\n", __func__
, ret
);
8141 struct nfs4_reclaim_complete_data
{
8142 struct nfs_client
*clp
;
8143 struct nfs41_reclaim_complete_args arg
;
8144 struct nfs41_reclaim_complete_res res
;
8147 static void nfs4_reclaim_complete_prepare(struct rpc_task
*task
, void *data
)
8149 struct nfs4_reclaim_complete_data
*calldata
= data
;
8151 nfs4_setup_sequence(calldata
->clp
,
8152 &calldata
->arg
.seq_args
,
8153 &calldata
->res
.seq_res
,
8157 static int nfs41_reclaim_complete_handle_errors(struct rpc_task
*task
, struct nfs_client
*clp
)
8159 switch(task
->tk_status
) {
8161 case -NFS4ERR_COMPLETE_ALREADY
:
8162 case -NFS4ERR_WRONG_CRED
: /* What to do here? */
8164 case -NFS4ERR_DELAY
:
8165 rpc_delay(task
, NFS4_POLL_RETRY_MAX
);
8167 case -NFS4ERR_RETRY_UNCACHED_REP
:
8169 case -NFS4ERR_BADSESSION
:
8170 case -NFS4ERR_DEADSESSION
:
8171 case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION
:
8172 nfs4_schedule_session_recovery(clp
->cl_session
,
8176 nfs4_schedule_lease_recovery(clp
);
8181 static void nfs4_reclaim_complete_done(struct rpc_task
*task
, void *data
)
8183 struct nfs4_reclaim_complete_data
*calldata
= data
;
8184 struct nfs_client
*clp
= calldata
->clp
;
8185 struct nfs4_sequence_res
*res
= &calldata
->res
.seq_res
;
8187 dprintk("--> %s\n", __func__
);
8188 if (!nfs41_sequence_done(task
, res
))
8191 trace_nfs4_reclaim_complete(clp
, task
->tk_status
);
8192 if (nfs41_reclaim_complete_handle_errors(task
, clp
) == -EAGAIN
) {
8193 rpc_restart_call_prepare(task
);
8196 dprintk("<-- %s\n", __func__
);
8199 static void nfs4_free_reclaim_complete_data(void *data
)
8201 struct nfs4_reclaim_complete_data
*calldata
= data
;
8206 static const struct rpc_call_ops nfs4_reclaim_complete_call_ops
= {
8207 .rpc_call_prepare
= nfs4_reclaim_complete_prepare
,
8208 .rpc_call_done
= nfs4_reclaim_complete_done
,
8209 .rpc_release
= nfs4_free_reclaim_complete_data
,
8213 * Issue a global reclaim complete.
8215 static int nfs41_proc_reclaim_complete(struct nfs_client
*clp
,
8216 struct rpc_cred
*cred
)
8218 struct nfs4_reclaim_complete_data
*calldata
;
8219 struct rpc_task
*task
;
8220 struct rpc_message msg
= {
8221 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RECLAIM_COMPLETE
],
8224 struct rpc_task_setup task_setup_data
= {
8225 .rpc_client
= clp
->cl_rpcclient
,
8226 .rpc_message
= &msg
,
8227 .callback_ops
= &nfs4_reclaim_complete_call_ops
,
8228 .flags
= RPC_TASK_ASYNC
,
8230 int status
= -ENOMEM
;
8232 dprintk("--> %s\n", __func__
);
8233 calldata
= kzalloc(sizeof(*calldata
), GFP_NOFS
);
8234 if (calldata
== NULL
)
8236 calldata
->clp
= clp
;
8237 calldata
->arg
.one_fs
= 0;
8239 nfs4_init_sequence(&calldata
->arg
.seq_args
, &calldata
->res
.seq_res
, 0);
8240 nfs4_set_sequence_privileged(&calldata
->arg
.seq_args
);
8241 msg
.rpc_argp
= &calldata
->arg
;
8242 msg
.rpc_resp
= &calldata
->res
;
8243 task_setup_data
.callback_data
= calldata
;
8244 task
= rpc_run_task(&task_setup_data
);
8246 status
= PTR_ERR(task
);
8249 status
= rpc_wait_for_completion_task(task
);
8251 status
= task
->tk_status
;
8254 dprintk("<-- %s status=%d\n", __func__
, status
);
8259 nfs4_layoutget_prepare(struct rpc_task
*task
, void *calldata
)
8261 struct nfs4_layoutget
*lgp
= calldata
;
8262 struct nfs_server
*server
= NFS_SERVER(lgp
->args
.inode
);
8264 dprintk("--> %s\n", __func__
);
8265 nfs4_setup_sequence(server
->nfs_client
, &lgp
->args
.seq_args
,
8266 &lgp
->res
.seq_res
, task
);
8267 dprintk("<-- %s\n", __func__
);
8270 static void nfs4_layoutget_done(struct rpc_task
*task
, void *calldata
)
8272 struct nfs4_layoutget
*lgp
= calldata
;
8274 dprintk("--> %s\n", __func__
);
8275 nfs41_sequence_process(task
, &lgp
->res
.seq_res
);
8276 dprintk("<-- %s\n", __func__
);
8280 nfs4_layoutget_handle_exception(struct rpc_task
*task
,
8281 struct nfs4_layoutget
*lgp
, struct nfs4_exception
*exception
)
8283 struct inode
*inode
= lgp
->args
.inode
;
8284 struct nfs_server
*server
= NFS_SERVER(inode
);
8285 struct pnfs_layout_hdr
*lo
;
8286 int nfs4err
= task
->tk_status
;
8287 int err
, status
= 0;
8290 dprintk("--> %s tk_status => %d\n", __func__
, -task
->tk_status
);
8297 * NFS4ERR_LAYOUTUNAVAILABLE means we are not supposed to use pnfs
8298 * on the file. set tk_status to -ENODATA to tell upper layer to
8301 case -NFS4ERR_LAYOUTUNAVAILABLE
:
8305 * NFS4ERR_BADLAYOUT means the MDS cannot return a layout of
8306 * length lgp->args.minlength != 0 (see RFC5661 section 18.43.3).
8308 case -NFS4ERR_BADLAYOUT
:
8309 status
= -EOVERFLOW
;
8312 * NFS4ERR_LAYOUTTRYLATER is a conflict with another client
8313 * (or clients) writing to the same RAID stripe except when
8314 * the minlength argument is 0 (see RFC5661 section 18.43.3).
8316 * Treat it like we would RECALLCONFLICT -- we retry for a little
8317 * while, and then eventually give up.
8319 case -NFS4ERR_LAYOUTTRYLATER
:
8320 if (lgp
->args
.minlength
== 0) {
8321 status
= -EOVERFLOW
;
8326 case -NFS4ERR_RECALLCONFLICT
:
8327 status
= -ERECALLCONFLICT
;
8329 case -NFS4ERR_DELEG_REVOKED
:
8330 case -NFS4ERR_ADMIN_REVOKED
:
8331 case -NFS4ERR_EXPIRED
:
8332 case -NFS4ERR_BAD_STATEID
:
8333 exception
->timeout
= 0;
8334 spin_lock(&inode
->i_lock
);
8335 lo
= NFS_I(inode
)->layout
;
8336 /* If the open stateid was bad, then recover it. */
8337 if (!lo
|| test_bit(NFS_LAYOUT_INVALID_STID
, &lo
->plh_flags
) ||
8338 nfs4_stateid_match_other(&lgp
->args
.stateid
,
8339 &lgp
->args
.ctx
->state
->stateid
)) {
8340 spin_unlock(&inode
->i_lock
);
8341 exception
->state
= lgp
->args
.ctx
->state
;
8342 exception
->stateid
= &lgp
->args
.stateid
;
8347 * Mark the bad layout state as invalid, then retry
8349 pnfs_mark_layout_stateid_invalid(lo
, &head
);
8350 spin_unlock(&inode
->i_lock
);
8351 nfs_commit_inode(inode
, 0);
8352 pnfs_free_lseg_list(&head
);
8357 nfs4_sequence_free_slot(&lgp
->res
.seq_res
);
8358 err
= nfs4_handle_exception(server
, nfs4err
, exception
);
8360 if (exception
->retry
)
8366 dprintk("<-- %s\n", __func__
);
8370 static size_t max_response_pages(struct nfs_server
*server
)
8372 u32 max_resp_sz
= server
->nfs_client
->cl_session
->fc_attrs
.max_resp_sz
;
8373 return nfs_page_array_len(0, max_resp_sz
);
8376 static void nfs4_free_pages(struct page
**pages
, size_t size
)
8383 for (i
= 0; i
< size
; i
++) {
8386 __free_page(pages
[i
]);
8391 static struct page
**nfs4_alloc_pages(size_t size
, gfp_t gfp_flags
)
8393 struct page
**pages
;
8396 pages
= kcalloc(size
, sizeof(struct page
*), gfp_flags
);
8398 dprintk("%s: can't alloc array of %zu pages\n", __func__
, size
);
8402 for (i
= 0; i
< size
; i
++) {
8403 pages
[i
] = alloc_page(gfp_flags
);
8405 dprintk("%s: failed to allocate page\n", __func__
);
8406 nfs4_free_pages(pages
, size
);
8414 static void nfs4_layoutget_release(void *calldata
)
8416 struct nfs4_layoutget
*lgp
= calldata
;
8417 struct inode
*inode
= lgp
->args
.inode
;
8418 struct nfs_server
*server
= NFS_SERVER(inode
);
8419 size_t max_pages
= max_response_pages(server
);
8421 dprintk("--> %s\n", __func__
);
8422 nfs4_free_pages(lgp
->args
.layout
.pages
, max_pages
);
8423 pnfs_put_layout_hdr(NFS_I(inode
)->layout
);
8424 put_nfs_open_context(lgp
->args
.ctx
);
8426 dprintk("<-- %s\n", __func__
);
8429 static const struct rpc_call_ops nfs4_layoutget_call_ops
= {
8430 .rpc_call_prepare
= nfs4_layoutget_prepare
,
8431 .rpc_call_done
= nfs4_layoutget_done
,
8432 .rpc_release
= nfs4_layoutget_release
,
8435 struct pnfs_layout_segment
*
8436 nfs4_proc_layoutget(struct nfs4_layoutget
*lgp
, long *timeout
, gfp_t gfp_flags
)
8438 struct inode
*inode
= lgp
->args
.inode
;
8439 struct nfs_server
*server
= NFS_SERVER(inode
);
8440 size_t max_pages
= max_response_pages(server
);
8441 struct rpc_task
*task
;
8442 struct rpc_message msg
= {
8443 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LAYOUTGET
],
8444 .rpc_argp
= &lgp
->args
,
8445 .rpc_resp
= &lgp
->res
,
8446 .rpc_cred
= lgp
->cred
,
8448 struct rpc_task_setup task_setup_data
= {
8449 .rpc_client
= server
->client
,
8450 .rpc_message
= &msg
,
8451 .callback_ops
= &nfs4_layoutget_call_ops
,
8452 .callback_data
= lgp
,
8453 .flags
= RPC_TASK_ASYNC
,
8455 struct pnfs_layout_segment
*lseg
= NULL
;
8456 struct nfs4_exception exception
= {
8458 .timeout
= *timeout
,
8462 dprintk("--> %s\n", __func__
);
8464 /* nfs4_layoutget_release calls pnfs_put_layout_hdr */
8465 pnfs_get_layout_hdr(NFS_I(inode
)->layout
);
8467 lgp
->args
.layout
.pages
= nfs4_alloc_pages(max_pages
, gfp_flags
);
8468 if (!lgp
->args
.layout
.pages
) {
8469 nfs4_layoutget_release(lgp
);
8470 return ERR_PTR(-ENOMEM
);
8472 lgp
->args
.layout
.pglen
= max_pages
* PAGE_SIZE
;
8474 lgp
->res
.layoutp
= &lgp
->args
.layout
;
8475 lgp
->res
.seq_res
.sr_slot
= NULL
;
8476 nfs4_init_sequence(&lgp
->args
.seq_args
, &lgp
->res
.seq_res
, 0);
8478 task
= rpc_run_task(&task_setup_data
);
8480 return ERR_CAST(task
);
8481 status
= rpc_wait_for_completion_task(task
);
8483 status
= nfs4_layoutget_handle_exception(task
, lgp
, &exception
);
8484 *timeout
= exception
.timeout
;
8487 trace_nfs4_layoutget(lgp
->args
.ctx
,
8493 /* if layoutp->len is 0, nfs4_layoutget_prepare called rpc_exit */
8494 if (status
== 0 && lgp
->res
.layoutp
->len
)
8495 lseg
= pnfs_layout_process(lgp
);
8496 nfs4_sequence_free_slot(&lgp
->res
.seq_res
);
8498 dprintk("<-- %s status=%d\n", __func__
, status
);
8500 return ERR_PTR(status
);
8505 nfs4_layoutreturn_prepare(struct rpc_task
*task
, void *calldata
)
8507 struct nfs4_layoutreturn
*lrp
= calldata
;
8509 dprintk("--> %s\n", __func__
);
8510 nfs4_setup_sequence(lrp
->clp
,
8511 &lrp
->args
.seq_args
,
8516 static void nfs4_layoutreturn_done(struct rpc_task
*task
, void *calldata
)
8518 struct nfs4_layoutreturn
*lrp
= calldata
;
8519 struct nfs_server
*server
;
8521 dprintk("--> %s\n", __func__
);
8523 if (!nfs41_sequence_process(task
, &lrp
->res
.seq_res
))
8526 server
= NFS_SERVER(lrp
->args
.inode
);
8527 switch (task
->tk_status
) {
8529 task
->tk_status
= 0;
8532 case -NFS4ERR_DELAY
:
8533 if (nfs4_async_handle_error(task
, server
, NULL
, NULL
) != -EAGAIN
)
8535 nfs4_sequence_free_slot(&lrp
->res
.seq_res
);
8536 rpc_restart_call_prepare(task
);
8539 dprintk("<-- %s\n", __func__
);
8542 static void nfs4_layoutreturn_release(void *calldata
)
8544 struct nfs4_layoutreturn
*lrp
= calldata
;
8545 struct pnfs_layout_hdr
*lo
= lrp
->args
.layout
;
8547 dprintk("--> %s\n", __func__
);
8548 pnfs_layoutreturn_free_lsegs(lo
, &lrp
->args
.stateid
, &lrp
->args
.range
,
8549 lrp
->res
.lrs_present
? &lrp
->res
.stateid
: NULL
);
8550 nfs4_sequence_free_slot(&lrp
->res
.seq_res
);
8551 if (lrp
->ld_private
.ops
&& lrp
->ld_private
.ops
->free
)
8552 lrp
->ld_private
.ops
->free(&lrp
->ld_private
);
8553 pnfs_put_layout_hdr(lrp
->args
.layout
);
8554 nfs_iput_and_deactive(lrp
->inode
);
8556 dprintk("<-- %s\n", __func__
);
8559 static const struct rpc_call_ops nfs4_layoutreturn_call_ops
= {
8560 .rpc_call_prepare
= nfs4_layoutreturn_prepare
,
8561 .rpc_call_done
= nfs4_layoutreturn_done
,
8562 .rpc_release
= nfs4_layoutreturn_release
,
8565 int nfs4_proc_layoutreturn(struct nfs4_layoutreturn
*lrp
, bool sync
)
8567 struct rpc_task
*task
;
8568 struct rpc_message msg
= {
8569 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LAYOUTRETURN
],
8570 .rpc_argp
= &lrp
->args
,
8571 .rpc_resp
= &lrp
->res
,
8572 .rpc_cred
= lrp
->cred
,
8574 struct rpc_task_setup task_setup_data
= {
8575 .rpc_client
= NFS_SERVER(lrp
->args
.inode
)->client
,
8576 .rpc_message
= &msg
,
8577 .callback_ops
= &nfs4_layoutreturn_call_ops
,
8578 .callback_data
= lrp
,
8582 nfs4_state_protect(NFS_SERVER(lrp
->args
.inode
)->nfs_client
,
8583 NFS_SP4_MACH_CRED_PNFS_CLEANUP
,
8584 &task_setup_data
.rpc_client
, &msg
);
8586 dprintk("--> %s\n", __func__
);
8588 lrp
->inode
= nfs_igrab_and_active(lrp
->args
.inode
);
8590 nfs4_layoutreturn_release(lrp
);
8593 task_setup_data
.flags
|= RPC_TASK_ASYNC
;
8595 nfs4_init_sequence(&lrp
->args
.seq_args
, &lrp
->res
.seq_res
, 1);
8596 task
= rpc_run_task(&task_setup_data
);
8598 return PTR_ERR(task
);
8600 status
= task
->tk_status
;
8601 trace_nfs4_layoutreturn(lrp
->args
.inode
, &lrp
->args
.stateid
, status
);
8602 dprintk("<-- %s status=%d\n", __func__
, status
);
8608 _nfs4_proc_getdeviceinfo(struct nfs_server
*server
,
8609 struct pnfs_device
*pdev
,
8610 struct rpc_cred
*cred
)
8612 struct nfs4_getdeviceinfo_args args
= {
8614 .notify_types
= NOTIFY_DEVICEID4_CHANGE
|
8615 NOTIFY_DEVICEID4_DELETE
,
8617 struct nfs4_getdeviceinfo_res res
= {
8620 struct rpc_message msg
= {
8621 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GETDEVICEINFO
],
8628 dprintk("--> %s\n", __func__
);
8629 status
= nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
8630 if (res
.notification
& ~args
.notify_types
)
8631 dprintk("%s: unsupported notification\n", __func__
);
8632 if (res
.notification
!= args
.notify_types
)
8635 dprintk("<-- %s status=%d\n", __func__
, status
);
8640 int nfs4_proc_getdeviceinfo(struct nfs_server
*server
,
8641 struct pnfs_device
*pdev
,
8642 struct rpc_cred
*cred
)
8644 struct nfs4_exception exception
= { };
8648 err
= nfs4_handle_exception(server
,
8649 _nfs4_proc_getdeviceinfo(server
, pdev
, cred
),
8651 } while (exception
.retry
);
8654 EXPORT_SYMBOL_GPL(nfs4_proc_getdeviceinfo
);
8656 static void nfs4_layoutcommit_prepare(struct rpc_task
*task
, void *calldata
)
8658 struct nfs4_layoutcommit_data
*data
= calldata
;
8659 struct nfs_server
*server
= NFS_SERVER(data
->args
.inode
);
8661 nfs4_setup_sequence(server
->nfs_client
,
8662 &data
->args
.seq_args
,
8668 nfs4_layoutcommit_done(struct rpc_task
*task
, void *calldata
)
8670 struct nfs4_layoutcommit_data
*data
= calldata
;
8671 struct nfs_server
*server
= NFS_SERVER(data
->args
.inode
);
8673 if (!nfs41_sequence_done(task
, &data
->res
.seq_res
))
8676 switch (task
->tk_status
) { /* Just ignore these failures */
8677 case -NFS4ERR_DELEG_REVOKED
: /* layout was recalled */
8678 case -NFS4ERR_BADIOMODE
: /* no IOMODE_RW layout for range */
8679 case -NFS4ERR_BADLAYOUT
: /* no layout */
8680 case -NFS4ERR_GRACE
: /* loca_recalim always false */
8681 task
->tk_status
= 0;
8685 if (nfs4_async_handle_error(task
, server
, NULL
, NULL
) == -EAGAIN
) {
8686 rpc_restart_call_prepare(task
);
8692 static void nfs4_layoutcommit_release(void *calldata
)
8694 struct nfs4_layoutcommit_data
*data
= calldata
;
8696 pnfs_cleanup_layoutcommit(data
);
8697 nfs_post_op_update_inode_force_wcc(data
->args
.inode
,
8699 put_rpccred(data
->cred
);
8700 nfs_iput_and_deactive(data
->inode
);
8704 static const struct rpc_call_ops nfs4_layoutcommit_ops
= {
8705 .rpc_call_prepare
= nfs4_layoutcommit_prepare
,
8706 .rpc_call_done
= nfs4_layoutcommit_done
,
8707 .rpc_release
= nfs4_layoutcommit_release
,
8711 nfs4_proc_layoutcommit(struct nfs4_layoutcommit_data
*data
, bool sync
)
8713 struct rpc_message msg
= {
8714 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LAYOUTCOMMIT
],
8715 .rpc_argp
= &data
->args
,
8716 .rpc_resp
= &data
->res
,
8717 .rpc_cred
= data
->cred
,
8719 struct rpc_task_setup task_setup_data
= {
8720 .task
= &data
->task
,
8721 .rpc_client
= NFS_CLIENT(data
->args
.inode
),
8722 .rpc_message
= &msg
,
8723 .callback_ops
= &nfs4_layoutcommit_ops
,
8724 .callback_data
= data
,
8726 struct rpc_task
*task
;
8729 dprintk("NFS: initiating layoutcommit call. sync %d "
8730 "lbw: %llu inode %lu\n", sync
,
8731 data
->args
.lastbytewritten
,
8732 data
->args
.inode
->i_ino
);
8735 data
->inode
= nfs_igrab_and_active(data
->args
.inode
);
8736 if (data
->inode
== NULL
) {
8737 nfs4_layoutcommit_release(data
);
8740 task_setup_data
.flags
= RPC_TASK_ASYNC
;
8742 nfs4_init_sequence(&data
->args
.seq_args
, &data
->res
.seq_res
, 1);
8743 task
= rpc_run_task(&task_setup_data
);
8745 return PTR_ERR(task
);
8747 status
= task
->tk_status
;
8748 trace_nfs4_layoutcommit(data
->args
.inode
, &data
->args
.stateid
, status
);
8749 dprintk("%s: status %d\n", __func__
, status
);
8755 * Use the state managment nfs_client cl_rpcclient, which uses krb5i (if
8756 * possible) as per RFC3530bis and RFC5661 Security Considerations sections
8759 _nfs41_proc_secinfo_no_name(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
8760 struct nfs_fsinfo
*info
,
8761 struct nfs4_secinfo_flavors
*flavors
, bool use_integrity
)
8763 struct nfs41_secinfo_no_name_args args
= {
8764 .style
= SECINFO_STYLE_CURRENT_FH
,
8766 struct nfs4_secinfo_res res
= {
8769 struct rpc_message msg
= {
8770 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SECINFO_NO_NAME
],
8774 struct rpc_clnt
*clnt
= server
->client
;
8775 struct rpc_cred
*cred
= NULL
;
8778 if (use_integrity
) {
8779 clnt
= server
->nfs_client
->cl_rpcclient
;
8780 cred
= nfs4_get_clid_cred(server
->nfs_client
);
8781 msg
.rpc_cred
= cred
;
8784 dprintk("--> %s\n", __func__
);
8785 status
= nfs4_call_sync(clnt
, server
, &msg
, &args
.seq_args
,
8787 dprintk("<-- %s status=%d\n", __func__
, status
);
8796 nfs41_proc_secinfo_no_name(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
8797 struct nfs_fsinfo
*info
, struct nfs4_secinfo_flavors
*flavors
)
8799 struct nfs4_exception exception
= { };
8802 /* first try using integrity protection */
8803 err
= -NFS4ERR_WRONGSEC
;
8805 /* try to use integrity protection with machine cred */
8806 if (_nfs4_is_integrity_protected(server
->nfs_client
))
8807 err
= _nfs41_proc_secinfo_no_name(server
, fhandle
, info
,
8811 * if unable to use integrity protection, or SECINFO with
8812 * integrity protection returns NFS4ERR_WRONGSEC (which is
8813 * disallowed by spec, but exists in deployed servers) use
8814 * the current filesystem's rpc_client and the user cred.
8816 if (err
== -NFS4ERR_WRONGSEC
)
8817 err
= _nfs41_proc_secinfo_no_name(server
, fhandle
, info
,
8822 case -NFS4ERR_WRONGSEC
:
8826 err
= nfs4_handle_exception(server
, err
, &exception
);
8828 } while (exception
.retry
);
8834 nfs41_find_root_sec(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
8835 struct nfs_fsinfo
*info
)
8839 rpc_authflavor_t flavor
= RPC_AUTH_MAXFLAVOR
;
8840 struct nfs4_secinfo_flavors
*flavors
;
8841 struct nfs4_secinfo4
*secinfo
;
8844 page
= alloc_page(GFP_KERNEL
);
8850 flavors
= page_address(page
);
8851 err
= nfs41_proc_secinfo_no_name(server
, fhandle
, info
, flavors
);
8854 * Fall back on "guess and check" method if
8855 * the server doesn't support SECINFO_NO_NAME
8857 if (err
== -NFS4ERR_WRONGSEC
|| err
== -ENOTSUPP
) {
8858 err
= nfs4_find_root_sec(server
, fhandle
, info
);
8864 for (i
= 0; i
< flavors
->num_flavors
; i
++) {
8865 secinfo
= &flavors
->flavors
[i
];
8867 switch (secinfo
->flavor
) {
8871 flavor
= rpcauth_get_pseudoflavor(secinfo
->flavor
,
8872 &secinfo
->flavor_info
);
8875 flavor
= RPC_AUTH_MAXFLAVOR
;
8879 if (!nfs_auth_info_match(&server
->auth_info
, flavor
))
8880 flavor
= RPC_AUTH_MAXFLAVOR
;
8882 if (flavor
!= RPC_AUTH_MAXFLAVOR
) {
8883 err
= nfs4_lookup_root_sec(server
, fhandle
,
8890 if (flavor
== RPC_AUTH_MAXFLAVOR
)
8901 static int _nfs41_test_stateid(struct nfs_server
*server
,
8902 nfs4_stateid
*stateid
,
8903 struct rpc_cred
*cred
)
8906 struct nfs41_test_stateid_args args
= {
8909 struct nfs41_test_stateid_res res
;
8910 struct rpc_message msg
= {
8911 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_TEST_STATEID
],
8916 struct rpc_clnt
*rpc_client
= server
->client
;
8918 nfs4_state_protect(server
->nfs_client
, NFS_SP4_MACH_CRED_STATEID
,
8921 dprintk("NFS call test_stateid %p\n", stateid
);
8922 nfs4_init_sequence(&args
.seq_args
, &res
.seq_res
, 0);
8923 nfs4_set_sequence_privileged(&args
.seq_args
);
8924 status
= nfs4_call_sync_sequence(rpc_client
, server
, &msg
,
8925 &args
.seq_args
, &res
.seq_res
);
8926 if (status
!= NFS_OK
) {
8927 dprintk("NFS reply test_stateid: failed, %d\n", status
);
8930 dprintk("NFS reply test_stateid: succeeded, %d\n", -res
.status
);
8934 static void nfs4_handle_delay_or_session_error(struct nfs_server
*server
,
8935 int err
, struct nfs4_exception
*exception
)
8937 exception
->retry
= 0;
8939 case -NFS4ERR_DELAY
:
8940 case -NFS4ERR_RETRY_UNCACHED_REP
:
8941 nfs4_handle_exception(server
, err
, exception
);
8943 case -NFS4ERR_BADSESSION
:
8944 case -NFS4ERR_BADSLOT
:
8945 case -NFS4ERR_BAD_HIGH_SLOT
:
8946 case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION
:
8947 case -NFS4ERR_DEADSESSION
:
8948 nfs4_do_handle_exception(server
, err
, exception
);
8953 * nfs41_test_stateid - perform a TEST_STATEID operation
8955 * @server: server / transport on which to perform the operation
8956 * @stateid: state ID to test
8959 * Returns NFS_OK if the server recognizes that "stateid" is valid.
8960 * Otherwise a negative NFS4ERR value is returned if the operation
8961 * failed or the state ID is not currently valid.
8963 static int nfs41_test_stateid(struct nfs_server
*server
,
8964 nfs4_stateid
*stateid
,
8965 struct rpc_cred
*cred
)
8967 struct nfs4_exception exception
= { };
8970 err
= _nfs41_test_stateid(server
, stateid
, cred
);
8971 nfs4_handle_delay_or_session_error(server
, err
, &exception
);
8972 } while (exception
.retry
);
8976 struct nfs_free_stateid_data
{
8977 struct nfs_server
*server
;
8978 struct nfs41_free_stateid_args args
;
8979 struct nfs41_free_stateid_res res
;
8982 static void nfs41_free_stateid_prepare(struct rpc_task
*task
, void *calldata
)
8984 struct nfs_free_stateid_data
*data
= calldata
;
8985 nfs4_setup_sequence(data
->server
->nfs_client
,
8986 &data
->args
.seq_args
,
8991 static void nfs41_free_stateid_done(struct rpc_task
*task
, void *calldata
)
8993 struct nfs_free_stateid_data
*data
= calldata
;
8995 nfs41_sequence_done(task
, &data
->res
.seq_res
);
8997 switch (task
->tk_status
) {
8998 case -NFS4ERR_DELAY
:
8999 if (nfs4_async_handle_error(task
, data
->server
, NULL
, NULL
) == -EAGAIN
)
9000 rpc_restart_call_prepare(task
);
9004 static void nfs41_free_stateid_release(void *calldata
)
9009 static const struct rpc_call_ops nfs41_free_stateid_ops
= {
9010 .rpc_call_prepare
= nfs41_free_stateid_prepare
,
9011 .rpc_call_done
= nfs41_free_stateid_done
,
9012 .rpc_release
= nfs41_free_stateid_release
,
9015 static struct rpc_task
*_nfs41_free_stateid(struct nfs_server
*server
,
9016 const nfs4_stateid
*stateid
,
9017 struct rpc_cred
*cred
,
9020 struct rpc_message msg
= {
9021 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_FREE_STATEID
],
9024 struct rpc_task_setup task_setup
= {
9025 .rpc_client
= server
->client
,
9026 .rpc_message
= &msg
,
9027 .callback_ops
= &nfs41_free_stateid_ops
,
9028 .flags
= RPC_TASK_ASYNC
,
9030 struct nfs_free_stateid_data
*data
;
9032 nfs4_state_protect(server
->nfs_client
, NFS_SP4_MACH_CRED_STATEID
,
9033 &task_setup
.rpc_client
, &msg
);
9035 dprintk("NFS call free_stateid %p\n", stateid
);
9036 data
= kmalloc(sizeof(*data
), GFP_NOFS
);
9038 return ERR_PTR(-ENOMEM
);
9039 data
->server
= server
;
9040 nfs4_stateid_copy(&data
->args
.stateid
, stateid
);
9042 task_setup
.callback_data
= data
;
9044 msg
.rpc_argp
= &data
->args
;
9045 msg
.rpc_resp
= &data
->res
;
9046 nfs4_init_sequence(&data
->args
.seq_args
, &data
->res
.seq_res
, 1);
9048 nfs4_set_sequence_privileged(&data
->args
.seq_args
);
9050 return rpc_run_task(&task_setup
);
9054 * nfs41_free_stateid - perform a FREE_STATEID operation
9056 * @server: server / transport on which to perform the operation
9057 * @stateid: state ID to release
9059 * @is_recovery: set to true if this call needs to be privileged
9061 * Note: this function is always asynchronous.
9063 static int nfs41_free_stateid(struct nfs_server
*server
,
9064 const nfs4_stateid
*stateid
,
9065 struct rpc_cred
*cred
,
9068 struct rpc_task
*task
;
9070 task
= _nfs41_free_stateid(server
, stateid
, cred
, is_recovery
);
9072 return PTR_ERR(task
);
9078 nfs41_free_lock_state(struct nfs_server
*server
, struct nfs4_lock_state
*lsp
)
9080 struct rpc_cred
*cred
= lsp
->ls_state
->owner
->so_cred
;
9082 nfs41_free_stateid(server
, &lsp
->ls_stateid
, cred
, false);
9083 nfs4_free_lock_state(server
, lsp
);
9086 static bool nfs41_match_stateid(const nfs4_stateid
*s1
,
9087 const nfs4_stateid
*s2
)
9089 if (s1
->type
!= s2
->type
)
9092 if (memcmp(s1
->other
, s2
->other
, sizeof(s1
->other
)) != 0)
9095 if (s1
->seqid
== s2
->seqid
)
9098 return s1
->seqid
== 0 || s2
->seqid
== 0;
9101 #endif /* CONFIG_NFS_V4_1 */
9103 static bool nfs4_match_stateid(const nfs4_stateid
*s1
,
9104 const nfs4_stateid
*s2
)
9106 return nfs4_stateid_match(s1
, s2
);
9110 static const struct nfs4_state_recovery_ops nfs40_reboot_recovery_ops
= {
9111 .owner_flag_bit
= NFS_OWNER_RECLAIM_REBOOT
,
9112 .state_flag_bit
= NFS_STATE_RECLAIM_REBOOT
,
9113 .recover_open
= nfs4_open_reclaim
,
9114 .recover_lock
= nfs4_lock_reclaim
,
9115 .establish_clid
= nfs4_init_clientid
,
9116 .detect_trunking
= nfs40_discover_server_trunking
,
9119 #if defined(CONFIG_NFS_V4_1)
9120 static const struct nfs4_state_recovery_ops nfs41_reboot_recovery_ops
= {
9121 .owner_flag_bit
= NFS_OWNER_RECLAIM_REBOOT
,
9122 .state_flag_bit
= NFS_STATE_RECLAIM_REBOOT
,
9123 .recover_open
= nfs4_open_reclaim
,
9124 .recover_lock
= nfs4_lock_reclaim
,
9125 .establish_clid
= nfs41_init_clientid
,
9126 .reclaim_complete
= nfs41_proc_reclaim_complete
,
9127 .detect_trunking
= nfs41_discover_server_trunking
,
9129 #endif /* CONFIG_NFS_V4_1 */
9131 static const struct nfs4_state_recovery_ops nfs40_nograce_recovery_ops
= {
9132 .owner_flag_bit
= NFS_OWNER_RECLAIM_NOGRACE
,
9133 .state_flag_bit
= NFS_STATE_RECLAIM_NOGRACE
,
9134 .recover_open
= nfs40_open_expired
,
9135 .recover_lock
= nfs4_lock_expired
,
9136 .establish_clid
= nfs4_init_clientid
,
9139 #if defined(CONFIG_NFS_V4_1)
9140 static const struct nfs4_state_recovery_ops nfs41_nograce_recovery_ops
= {
9141 .owner_flag_bit
= NFS_OWNER_RECLAIM_NOGRACE
,
9142 .state_flag_bit
= NFS_STATE_RECLAIM_NOGRACE
,
9143 .recover_open
= nfs41_open_expired
,
9144 .recover_lock
= nfs41_lock_expired
,
9145 .establish_clid
= nfs41_init_clientid
,
9147 #endif /* CONFIG_NFS_V4_1 */
9149 static const struct nfs4_state_maintenance_ops nfs40_state_renewal_ops
= {
9150 .sched_state_renewal
= nfs4_proc_async_renew
,
9151 .get_state_renewal_cred_locked
= nfs4_get_renew_cred_locked
,
9152 .renew_lease
= nfs4_proc_renew
,
9155 #if defined(CONFIG_NFS_V4_1)
9156 static const struct nfs4_state_maintenance_ops nfs41_state_renewal_ops
= {
9157 .sched_state_renewal
= nfs41_proc_async_sequence
,
9158 .get_state_renewal_cred_locked
= nfs4_get_machine_cred_locked
,
9159 .renew_lease
= nfs4_proc_sequence
,
9163 static const struct nfs4_mig_recovery_ops nfs40_mig_recovery_ops
= {
9164 .get_locations
= _nfs40_proc_get_locations
,
9165 .fsid_present
= _nfs40_proc_fsid_present
,
9168 #if defined(CONFIG_NFS_V4_1)
9169 static const struct nfs4_mig_recovery_ops nfs41_mig_recovery_ops
= {
9170 .get_locations
= _nfs41_proc_get_locations
,
9171 .fsid_present
= _nfs41_proc_fsid_present
,
9173 #endif /* CONFIG_NFS_V4_1 */
9175 static const struct nfs4_minor_version_ops nfs_v4_0_minor_ops
= {
9177 .init_caps
= NFS_CAP_READDIRPLUS
9178 | NFS_CAP_ATOMIC_OPEN
9179 | NFS_CAP_POSIX_LOCK
,
9180 .init_client
= nfs40_init_client
,
9181 .shutdown_client
= nfs40_shutdown_client
,
9182 .match_stateid
= nfs4_match_stateid
,
9183 .find_root_sec
= nfs4_find_root_sec
,
9184 .free_lock_state
= nfs4_release_lockowner
,
9185 .test_and_free_expired
= nfs40_test_and_free_expired_stateid
,
9186 .alloc_seqid
= nfs_alloc_seqid
,
9187 .call_sync_ops
= &nfs40_call_sync_ops
,
9188 .reboot_recovery_ops
= &nfs40_reboot_recovery_ops
,
9189 .nograce_recovery_ops
= &nfs40_nograce_recovery_ops
,
9190 .state_renewal_ops
= &nfs40_state_renewal_ops
,
9191 .mig_recovery_ops
= &nfs40_mig_recovery_ops
,
9194 #if defined(CONFIG_NFS_V4_1)
9195 static struct nfs_seqid
*
9196 nfs_alloc_no_seqid(struct nfs_seqid_counter
*arg1
, gfp_t arg2
)
9201 static const struct nfs4_minor_version_ops nfs_v4_1_minor_ops
= {
9203 .init_caps
= NFS_CAP_READDIRPLUS
9204 | NFS_CAP_ATOMIC_OPEN
9205 | NFS_CAP_POSIX_LOCK
9206 | NFS_CAP_STATEID_NFSV41
9207 | NFS_CAP_ATOMIC_OPEN_V1
,
9208 .init_client
= nfs41_init_client
,
9209 .shutdown_client
= nfs41_shutdown_client
,
9210 .match_stateid
= nfs41_match_stateid
,
9211 .find_root_sec
= nfs41_find_root_sec
,
9212 .free_lock_state
= nfs41_free_lock_state
,
9213 .test_and_free_expired
= nfs41_test_and_free_expired_stateid
,
9214 .alloc_seqid
= nfs_alloc_no_seqid
,
9215 .session_trunk
= nfs4_test_session_trunk
,
9216 .call_sync_ops
= &nfs41_call_sync_ops
,
9217 .reboot_recovery_ops
= &nfs41_reboot_recovery_ops
,
9218 .nograce_recovery_ops
= &nfs41_nograce_recovery_ops
,
9219 .state_renewal_ops
= &nfs41_state_renewal_ops
,
9220 .mig_recovery_ops
= &nfs41_mig_recovery_ops
,
9224 #if defined(CONFIG_NFS_V4_2)
9225 static const struct nfs4_minor_version_ops nfs_v4_2_minor_ops
= {
9227 .init_caps
= NFS_CAP_READDIRPLUS
9228 | NFS_CAP_ATOMIC_OPEN
9229 | NFS_CAP_POSIX_LOCK
9230 | NFS_CAP_STATEID_NFSV41
9231 | NFS_CAP_ATOMIC_OPEN_V1
9234 | NFS_CAP_DEALLOCATE
9236 | NFS_CAP_LAYOUTSTATS
9238 .init_client
= nfs41_init_client
,
9239 .shutdown_client
= nfs41_shutdown_client
,
9240 .match_stateid
= nfs41_match_stateid
,
9241 .find_root_sec
= nfs41_find_root_sec
,
9242 .free_lock_state
= nfs41_free_lock_state
,
9243 .call_sync_ops
= &nfs41_call_sync_ops
,
9244 .test_and_free_expired
= nfs41_test_and_free_expired_stateid
,
9245 .alloc_seqid
= nfs_alloc_no_seqid
,
9246 .session_trunk
= nfs4_test_session_trunk
,
9247 .reboot_recovery_ops
= &nfs41_reboot_recovery_ops
,
9248 .nograce_recovery_ops
= &nfs41_nograce_recovery_ops
,
9249 .state_renewal_ops
= &nfs41_state_renewal_ops
,
9250 .mig_recovery_ops
= &nfs41_mig_recovery_ops
,
9254 const struct nfs4_minor_version_ops
*nfs_v4_minor_ops
[] = {
9255 [0] = &nfs_v4_0_minor_ops
,
9256 #if defined(CONFIG_NFS_V4_1)
9257 [1] = &nfs_v4_1_minor_ops
,
9259 #if defined(CONFIG_NFS_V4_2)
9260 [2] = &nfs_v4_2_minor_ops
,
9264 static ssize_t
nfs4_listxattr(struct dentry
*dentry
, char *list
, size_t size
)
9266 ssize_t error
, error2
;
9268 error
= generic_listxattr(dentry
, list
, size
);
9276 error2
= nfs4_listxattr_nfs4_label(d_inode(dentry
), list
, size
);
9279 return error
+ error2
;
9282 static const struct inode_operations nfs4_dir_inode_operations
= {
9283 .create
= nfs_create
,
9284 .lookup
= nfs_lookup
,
9285 .atomic_open
= nfs_atomic_open
,
9287 .unlink
= nfs_unlink
,
9288 .symlink
= nfs_symlink
,
9292 .rename
= nfs_rename
,
9293 .permission
= nfs_permission
,
9294 .getattr
= nfs_getattr
,
9295 .setattr
= nfs_setattr
,
9296 .listxattr
= nfs4_listxattr
,
9299 static const struct inode_operations nfs4_file_inode_operations
= {
9300 .permission
= nfs_permission
,
9301 .getattr
= nfs_getattr
,
9302 .setattr
= nfs_setattr
,
9303 .listxattr
= nfs4_listxattr
,
9306 const struct nfs_rpc_ops nfs_v4_clientops
= {
9307 .version
= 4, /* protocol version */
9308 .dentry_ops
= &nfs4_dentry_operations
,
9309 .dir_inode_ops
= &nfs4_dir_inode_operations
,
9310 .file_inode_ops
= &nfs4_file_inode_operations
,
9311 .file_ops
= &nfs4_file_operations
,
9312 .getroot
= nfs4_proc_get_root
,
9313 .submount
= nfs4_submount
,
9314 .try_mount
= nfs4_try_mount
,
9315 .getattr
= nfs4_proc_getattr
,
9316 .setattr
= nfs4_proc_setattr
,
9317 .lookup
= nfs4_proc_lookup
,
9318 .access
= nfs4_proc_access
,
9319 .readlink
= nfs4_proc_readlink
,
9320 .create
= nfs4_proc_create
,
9321 .remove
= nfs4_proc_remove
,
9322 .unlink_setup
= nfs4_proc_unlink_setup
,
9323 .unlink_rpc_prepare
= nfs4_proc_unlink_rpc_prepare
,
9324 .unlink_done
= nfs4_proc_unlink_done
,
9325 .rename_setup
= nfs4_proc_rename_setup
,
9326 .rename_rpc_prepare
= nfs4_proc_rename_rpc_prepare
,
9327 .rename_done
= nfs4_proc_rename_done
,
9328 .link
= nfs4_proc_link
,
9329 .symlink
= nfs4_proc_symlink
,
9330 .mkdir
= nfs4_proc_mkdir
,
9331 .rmdir
= nfs4_proc_remove
,
9332 .readdir
= nfs4_proc_readdir
,
9333 .mknod
= nfs4_proc_mknod
,
9334 .statfs
= nfs4_proc_statfs
,
9335 .fsinfo
= nfs4_proc_fsinfo
,
9336 .pathconf
= nfs4_proc_pathconf
,
9337 .set_capabilities
= nfs4_server_capabilities
,
9338 .decode_dirent
= nfs4_decode_dirent
,
9339 .pgio_rpc_prepare
= nfs4_proc_pgio_rpc_prepare
,
9340 .read_setup
= nfs4_proc_read_setup
,
9341 .read_done
= nfs4_read_done
,
9342 .write_setup
= nfs4_proc_write_setup
,
9343 .write_done
= nfs4_write_done
,
9344 .commit_setup
= nfs4_proc_commit_setup
,
9345 .commit_rpc_prepare
= nfs4_proc_commit_rpc_prepare
,
9346 .commit_done
= nfs4_commit_done
,
9347 .lock
= nfs4_proc_lock
,
9348 .clear_acl_cache
= nfs4_zap_acl_attr
,
9349 .close_context
= nfs4_close_context
,
9350 .open_context
= nfs4_atomic_open
,
9351 .have_delegation
= nfs4_have_delegation
,
9352 .return_delegation
= nfs4_inode_return_delegation
,
9353 .alloc_client
= nfs4_alloc_client
,
9354 .init_client
= nfs4_init_client
,
9355 .free_client
= nfs4_free_client
,
9356 .create_server
= nfs4_create_server
,
9357 .clone_server
= nfs_clone_server
,
9360 static const struct xattr_handler nfs4_xattr_nfs4_acl_handler
= {
9361 .name
= XATTR_NAME_NFSV4_ACL
,
9362 .list
= nfs4_xattr_list_nfs4_acl
,
9363 .get
= nfs4_xattr_get_nfs4_acl
,
9364 .set
= nfs4_xattr_set_nfs4_acl
,
9367 const struct xattr_handler
*nfs4_xattr_handlers
[] = {
9368 &nfs4_xattr_nfs4_acl_handler
,
9369 #ifdef CONFIG_NFS_V4_SECURITY_LABEL
9370 &nfs4_xattr_nfs4_label_handler
,