4 * Client-side procedure declarations for NFSv4.
6 * Copyright (c) 2002 The Regents of the University of Michigan.
9 * Kendrick Smith <kmsmith@umich.edu>
10 * Andy Adamson <andros@umich.edu>
12 * Redistribution and use in source and binary forms, with or without
13 * modification, are permitted provided that the following conditions
16 * 1. Redistributions of source code must retain the above copyright
17 * notice, this list of conditions and the following disclaimer.
18 * 2. Redistributions in binary form must reproduce the above copyright
19 * notice, this list of conditions and the following disclaimer in the
20 * documentation and/or other materials provided with the distribution.
21 * 3. Neither the name of the University nor the names of its
22 * contributors may be used to endorse or promote products derived
23 * from this software without specific prior written permission.
25 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
26 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
27 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
28 * DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
29 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
30 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
31 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
32 * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
33 * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
34 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
35 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
39 #include <linux/delay.h>
40 #include <linux/errno.h>
41 #include <linux/string.h>
42 #include <linux/ratelimit.h>
43 #include <linux/printk.h>
44 #include <linux/slab.h>
45 #include <linux/sunrpc/clnt.h>
46 #include <linux/nfs.h>
47 #include <linux/nfs4.h>
48 #include <linux/nfs_fs.h>
49 #include <linux/nfs_page.h>
50 #include <linux/nfs_mount.h>
51 #include <linux/namei.h>
52 #include <linux/mount.h>
53 #include <linux/module.h>
54 #include <linux/xattr.h>
55 #include <linux/utsname.h>
56 #include <linux/freezer.h>
59 #include "delegation.h"
65 #include "nfs4idmap.h"
66 #include "nfs4session.h"
69 #include "nfs4trace.h"
71 #define NFSDBG_FACILITY NFSDBG_PROC
73 #define NFS4_POLL_RETRY_MIN (HZ/10)
74 #define NFS4_POLL_RETRY_MAX (15*HZ)
76 /* file attributes which can be mapped to nfs attributes */
77 #define NFS4_VALID_ATTRS (ATTR_MODE \
88 static int _nfs4_proc_open(struct nfs4_opendata
*data
);
89 static int _nfs4_recover_proc_open(struct nfs4_opendata
*data
);
90 static int nfs4_do_fsinfo(struct nfs_server
*, struct nfs_fh
*, struct nfs_fsinfo
*);
91 static void nfs_fixup_referral_attributes(struct nfs_fattr
*fattr
);
92 static int nfs4_proc_getattr(struct nfs_server
*, struct nfs_fh
*, struct nfs_fattr
*, struct nfs4_label
*label
);
93 static int _nfs4_proc_getattr(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fattr
*fattr
, struct nfs4_label
*label
);
94 static int nfs4_do_setattr(struct inode
*inode
, struct rpc_cred
*cred
,
95 struct nfs_fattr
*fattr
, struct iattr
*sattr
,
96 struct nfs_open_context
*ctx
, struct nfs4_label
*ilabel
,
97 struct nfs4_label
*olabel
);
98 #ifdef CONFIG_NFS_V4_1
99 static int nfs41_test_stateid(struct nfs_server
*, nfs4_stateid
*,
101 static int nfs41_free_stateid(struct nfs_server
*, const nfs4_stateid
*,
102 struct rpc_cred
*, bool);
105 #ifdef CONFIG_NFS_V4_SECURITY_LABEL
106 static inline struct nfs4_label
*
107 nfs4_label_init_security(struct inode
*dir
, struct dentry
*dentry
,
108 struct iattr
*sattr
, struct nfs4_label
*label
)
115 if (nfs_server_capable(dir
, NFS_CAP_SECURITY_LABEL
) == 0)
118 err
= security_dentry_init_security(dentry
, sattr
->ia_mode
,
119 &dentry
->d_name
, (void **)&label
->label
, &label
->len
);
126 nfs4_label_release_security(struct nfs4_label
*label
)
129 security_release_secctx(label
->label
, label
->len
);
131 static inline u32
*nfs4_bitmask(struct nfs_server
*server
, struct nfs4_label
*label
)
134 return server
->attr_bitmask
;
136 return server
->attr_bitmask_nl
;
139 static inline struct nfs4_label
*
140 nfs4_label_init_security(struct inode
*dir
, struct dentry
*dentry
,
141 struct iattr
*sattr
, struct nfs4_label
*l
)
144 nfs4_label_release_security(struct nfs4_label
*label
)
147 nfs4_bitmask(struct nfs_server
*server
, struct nfs4_label
*label
)
148 { return server
->attr_bitmask
; }
151 /* Prevent leaks of NFSv4 errors into userland */
152 static int nfs4_map_errors(int err
)
157 case -NFS4ERR_RESOURCE
:
158 case -NFS4ERR_LAYOUTTRYLATER
:
159 case -NFS4ERR_RECALLCONFLICT
:
161 case -NFS4ERR_WRONGSEC
:
162 case -NFS4ERR_WRONG_CRED
:
164 case -NFS4ERR_BADOWNER
:
165 case -NFS4ERR_BADNAME
:
167 case -NFS4ERR_SHARE_DENIED
:
169 case -NFS4ERR_MINOR_VERS_MISMATCH
:
170 return -EPROTONOSUPPORT
;
171 case -NFS4ERR_FILE_OPEN
:
174 dprintk("%s could not handle NFSv4 error %d\n",
182 * This is our standard bitmap for GETATTR requests.
184 const u32 nfs4_fattr_bitmap
[3] = {
186 | FATTR4_WORD0_CHANGE
189 | FATTR4_WORD0_FILEID
,
191 | FATTR4_WORD1_NUMLINKS
193 | FATTR4_WORD1_OWNER_GROUP
194 | FATTR4_WORD1_RAWDEV
195 | FATTR4_WORD1_SPACE_USED
196 | FATTR4_WORD1_TIME_ACCESS
197 | FATTR4_WORD1_TIME_METADATA
198 | FATTR4_WORD1_TIME_MODIFY
199 | FATTR4_WORD1_MOUNTED_ON_FILEID
,
200 #ifdef CONFIG_NFS_V4_SECURITY_LABEL
201 FATTR4_WORD2_SECURITY_LABEL
205 static const u32 nfs4_pnfs_open_bitmap
[3] = {
207 | FATTR4_WORD0_CHANGE
210 | FATTR4_WORD0_FILEID
,
212 | FATTR4_WORD1_NUMLINKS
214 | FATTR4_WORD1_OWNER_GROUP
215 | FATTR4_WORD1_RAWDEV
216 | FATTR4_WORD1_SPACE_USED
217 | FATTR4_WORD1_TIME_ACCESS
218 | FATTR4_WORD1_TIME_METADATA
219 | FATTR4_WORD1_TIME_MODIFY
,
220 FATTR4_WORD2_MDSTHRESHOLD
221 #ifdef CONFIG_NFS_V4_SECURITY_LABEL
222 | FATTR4_WORD2_SECURITY_LABEL
226 static const u32 nfs4_open_noattr_bitmap
[3] = {
228 | FATTR4_WORD0_FILEID
,
231 const u32 nfs4_statfs_bitmap
[3] = {
232 FATTR4_WORD0_FILES_AVAIL
233 | FATTR4_WORD0_FILES_FREE
234 | FATTR4_WORD0_FILES_TOTAL
,
235 FATTR4_WORD1_SPACE_AVAIL
236 | FATTR4_WORD1_SPACE_FREE
237 | FATTR4_WORD1_SPACE_TOTAL
240 const u32 nfs4_pathconf_bitmap
[3] = {
242 | FATTR4_WORD0_MAXNAME
,
246 const u32 nfs4_fsinfo_bitmap
[3] = { FATTR4_WORD0_MAXFILESIZE
247 | FATTR4_WORD0_MAXREAD
248 | FATTR4_WORD0_MAXWRITE
249 | FATTR4_WORD0_LEASE_TIME
,
250 FATTR4_WORD1_TIME_DELTA
251 | FATTR4_WORD1_FS_LAYOUT_TYPES
,
252 FATTR4_WORD2_LAYOUT_BLKSIZE
253 | FATTR4_WORD2_CLONE_BLKSIZE
256 const u32 nfs4_fs_locations_bitmap
[3] = {
258 | FATTR4_WORD0_CHANGE
261 | FATTR4_WORD0_FILEID
262 | FATTR4_WORD0_FS_LOCATIONS
,
264 | FATTR4_WORD1_NUMLINKS
266 | FATTR4_WORD1_OWNER_GROUP
267 | FATTR4_WORD1_RAWDEV
268 | FATTR4_WORD1_SPACE_USED
269 | FATTR4_WORD1_TIME_ACCESS
270 | FATTR4_WORD1_TIME_METADATA
271 | FATTR4_WORD1_TIME_MODIFY
272 | FATTR4_WORD1_MOUNTED_ON_FILEID
,
275 static void nfs4_setup_readdir(u64 cookie
, __be32
*verifier
, struct dentry
*dentry
,
276 struct nfs4_readdir_arg
*readdir
)
281 readdir
->cookie
= cookie
;
282 memcpy(&readdir
->verifier
, verifier
, sizeof(readdir
->verifier
));
287 memset(&readdir
->verifier
, 0, sizeof(readdir
->verifier
));
292 * NFSv4 servers do not return entries for '.' and '..'
293 * Therefore, we fake these entries here. We let '.'
294 * have cookie 0 and '..' have cookie 1. Note that
295 * when talking to the server, we always send cookie 0
298 start
= p
= kmap_atomic(*readdir
->pages
);
301 *p
++ = xdr_one
; /* next */
302 *p
++ = xdr_zero
; /* cookie, first word */
303 *p
++ = xdr_one
; /* cookie, second word */
304 *p
++ = xdr_one
; /* entry len */
305 memcpy(p
, ".\0\0\0", 4); /* entry */
307 *p
++ = xdr_one
; /* bitmap length */
308 *p
++ = htonl(FATTR4_WORD0_FILEID
); /* bitmap */
309 *p
++ = htonl(8); /* attribute buffer length */
310 p
= xdr_encode_hyper(p
, NFS_FILEID(d_inode(dentry
)));
313 *p
++ = xdr_one
; /* next */
314 *p
++ = xdr_zero
; /* cookie, first word */
315 *p
++ = xdr_two
; /* cookie, second word */
316 *p
++ = xdr_two
; /* entry len */
317 memcpy(p
, "..\0\0", 4); /* entry */
319 *p
++ = xdr_one
; /* bitmap length */
320 *p
++ = htonl(FATTR4_WORD0_FILEID
); /* bitmap */
321 *p
++ = htonl(8); /* attribute buffer length */
322 p
= xdr_encode_hyper(p
, NFS_FILEID(d_inode(dentry
->d_parent
)));
324 readdir
->pgbase
= (char *)p
- (char *)start
;
325 readdir
->count
-= readdir
->pgbase
;
326 kunmap_atomic(start
);
329 static void nfs4_test_and_free_stateid(struct nfs_server
*server
,
330 nfs4_stateid
*stateid
,
331 struct rpc_cred
*cred
)
333 const struct nfs4_minor_version_ops
*ops
= server
->nfs_client
->cl_mvops
;
335 ops
->test_and_free_expired(server
, stateid
, cred
);
338 static void __nfs4_free_revoked_stateid(struct nfs_server
*server
,
339 nfs4_stateid
*stateid
,
340 struct rpc_cred
*cred
)
342 stateid
->type
= NFS4_REVOKED_STATEID_TYPE
;
343 nfs4_test_and_free_stateid(server
, stateid
, cred
);
346 static void nfs4_free_revoked_stateid(struct nfs_server
*server
,
347 const nfs4_stateid
*stateid
,
348 struct rpc_cred
*cred
)
352 nfs4_stateid_copy(&tmp
, stateid
);
353 __nfs4_free_revoked_stateid(server
, &tmp
, cred
);
356 static long nfs4_update_delay(long *timeout
)
360 return NFS4_POLL_RETRY_MAX
;
362 *timeout
= NFS4_POLL_RETRY_MIN
;
363 if (*timeout
> NFS4_POLL_RETRY_MAX
)
364 *timeout
= NFS4_POLL_RETRY_MAX
;
370 static int nfs4_delay(struct rpc_clnt
*clnt
, long *timeout
)
376 freezable_schedule_timeout_killable_unsafe(
377 nfs4_update_delay(timeout
));
378 if (fatal_signal_pending(current
))
383 /* This is the error handling routine for processes that are allowed
386 static int nfs4_do_handle_exception(struct nfs_server
*server
,
387 int errorcode
, struct nfs4_exception
*exception
)
389 struct nfs_client
*clp
= server
->nfs_client
;
390 struct nfs4_state
*state
= exception
->state
;
391 const nfs4_stateid
*stateid
= exception
->stateid
;
392 struct inode
*inode
= exception
->inode
;
395 exception
->delay
= 0;
396 exception
->recovering
= 0;
397 exception
->retry
= 0;
399 if (stateid
== NULL
&& state
!= NULL
)
400 stateid
= &state
->stateid
;
405 case -NFS4ERR_DELEG_REVOKED
:
406 case -NFS4ERR_ADMIN_REVOKED
:
407 case -NFS4ERR_EXPIRED
:
408 case -NFS4ERR_BAD_STATEID
:
409 if (inode
!= NULL
&& stateid
!= NULL
) {
410 nfs_inode_find_state_and_recover(inode
,
412 goto wait_on_recovery
;
414 case -NFS4ERR_OPENMODE
:
418 err
= nfs_async_inode_return_delegation(inode
,
421 goto wait_on_recovery
;
422 if (stateid
!= NULL
&& stateid
->type
== NFS4_DELEGATION_STATEID_TYPE
) {
423 exception
->retry
= 1;
429 ret
= nfs4_schedule_stateid_recovery(server
, state
);
432 goto wait_on_recovery
;
433 case -NFS4ERR_STALE_STATEID
:
434 case -NFS4ERR_STALE_CLIENTID
:
435 nfs4_schedule_lease_recovery(clp
);
436 goto wait_on_recovery
;
438 ret
= nfs4_schedule_migration_recovery(server
);
441 goto wait_on_recovery
;
442 case -NFS4ERR_LEASE_MOVED
:
443 nfs4_schedule_lease_moved_recovery(clp
);
444 goto wait_on_recovery
;
445 #if defined(CONFIG_NFS_V4_1)
446 case -NFS4ERR_BADSESSION
:
447 case -NFS4ERR_BADSLOT
:
448 case -NFS4ERR_BAD_HIGH_SLOT
:
449 case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION
:
450 case -NFS4ERR_DEADSESSION
:
451 case -NFS4ERR_SEQ_FALSE_RETRY
:
452 case -NFS4ERR_SEQ_MISORDERED
:
453 dprintk("%s ERROR: %d Reset session\n", __func__
,
455 nfs4_schedule_session_recovery(clp
->cl_session
, errorcode
);
456 goto wait_on_recovery
;
457 #endif /* defined(CONFIG_NFS_V4_1) */
458 case -NFS4ERR_FILE_OPEN
:
459 if (exception
->timeout
> HZ
) {
460 /* We have retried a decent amount, time to
467 nfs_inc_server_stats(server
, NFSIOS_DELAY
);
469 case -NFS4ERR_LAYOUTTRYLATER
:
470 case -NFS4ERR_RECALLCONFLICT
:
471 exception
->delay
= 1;
474 case -NFS4ERR_RETRY_UNCACHED_REP
:
475 case -NFS4ERR_OLD_STATEID
:
476 exception
->retry
= 1;
478 case -NFS4ERR_BADOWNER
:
479 /* The following works around a Linux server bug! */
480 case -NFS4ERR_BADNAME
:
481 if (server
->caps
& NFS_CAP_UIDGID_NOMAP
) {
482 server
->caps
&= ~NFS_CAP_UIDGID_NOMAP
;
483 exception
->retry
= 1;
484 printk(KERN_WARNING
"NFS: v4 server %s "
485 "does not accept raw "
487 "Reenabling the idmapper.\n",
488 server
->nfs_client
->cl_hostname
);
491 /* We failed to handle the error */
492 return nfs4_map_errors(ret
);
494 exception
->recovering
= 1;
498 /* This is the error handling routine for processes that are allowed
501 int nfs4_handle_exception(struct nfs_server
*server
, int errorcode
, struct nfs4_exception
*exception
)
503 struct nfs_client
*clp
= server
->nfs_client
;
506 ret
= nfs4_do_handle_exception(server
, errorcode
, exception
);
507 if (exception
->delay
) {
508 ret
= nfs4_delay(server
->client
, &exception
->timeout
);
511 if (exception
->recovering
) {
512 ret
= nfs4_wait_clnt_recover(clp
);
513 if (test_bit(NFS_MIG_FAILED
, &server
->mig_status
))
520 exception
->retry
= 1;
525 nfs4_async_handle_exception(struct rpc_task
*task
, struct nfs_server
*server
,
526 int errorcode
, struct nfs4_exception
*exception
)
528 struct nfs_client
*clp
= server
->nfs_client
;
531 ret
= nfs4_do_handle_exception(server
, errorcode
, exception
);
532 if (exception
->delay
) {
533 rpc_delay(task
, nfs4_update_delay(&exception
->timeout
));
536 if (exception
->recovering
) {
537 rpc_sleep_on(&clp
->cl_rpcwaitq
, task
, NULL
);
538 if (test_bit(NFS4CLNT_MANAGER_RUNNING
, &clp
->cl_state
) == 0)
539 rpc_wake_up_queued_task(&clp
->cl_rpcwaitq
, task
);
542 if (test_bit(NFS_MIG_FAILED
, &server
->mig_status
))
547 exception
->retry
= 1;
552 nfs4_async_handle_error(struct rpc_task
*task
, struct nfs_server
*server
,
553 struct nfs4_state
*state
, long *timeout
)
555 struct nfs4_exception exception
= {
559 if (task
->tk_status
>= 0)
562 exception
.timeout
= *timeout
;
563 task
->tk_status
= nfs4_async_handle_exception(task
, server
,
566 if (exception
.delay
&& timeout
)
567 *timeout
= exception
.timeout
;
574 * Return 'true' if 'clp' is using an rpc_client that is integrity protected
575 * or 'false' otherwise.
577 static bool _nfs4_is_integrity_protected(struct nfs_client
*clp
)
579 rpc_authflavor_t flavor
= clp
->cl_rpcclient
->cl_auth
->au_flavor
;
580 return (flavor
== RPC_AUTH_GSS_KRB5I
) || (flavor
== RPC_AUTH_GSS_KRB5P
);
583 static void do_renew_lease(struct nfs_client
*clp
, unsigned long timestamp
)
585 spin_lock(&clp
->cl_lock
);
586 if (time_before(clp
->cl_last_renewal
,timestamp
))
587 clp
->cl_last_renewal
= timestamp
;
588 spin_unlock(&clp
->cl_lock
);
591 static void renew_lease(const struct nfs_server
*server
, unsigned long timestamp
)
593 struct nfs_client
*clp
= server
->nfs_client
;
595 if (!nfs4_has_session(clp
))
596 do_renew_lease(clp
, timestamp
);
599 struct nfs4_call_sync_data
{
600 const struct nfs_server
*seq_server
;
601 struct nfs4_sequence_args
*seq_args
;
602 struct nfs4_sequence_res
*seq_res
;
605 void nfs4_init_sequence(struct nfs4_sequence_args
*args
,
606 struct nfs4_sequence_res
*res
, int cache_reply
)
608 args
->sa_slot
= NULL
;
609 args
->sa_cache_this
= cache_reply
;
610 args
->sa_privileged
= 0;
615 static void nfs4_set_sequence_privileged(struct nfs4_sequence_args
*args
)
617 args
->sa_privileged
= 1;
620 static void nfs40_sequence_free_slot(struct nfs4_sequence_res
*res
)
622 struct nfs4_slot
*slot
= res
->sr_slot
;
623 struct nfs4_slot_table
*tbl
;
626 spin_lock(&tbl
->slot_tbl_lock
);
627 if (!nfs41_wake_and_assign_slot(tbl
, slot
))
628 nfs4_free_slot(tbl
, slot
);
629 spin_unlock(&tbl
->slot_tbl_lock
);
634 static int nfs40_sequence_done(struct rpc_task
*task
,
635 struct nfs4_sequence_res
*res
)
637 if (res
->sr_slot
!= NULL
)
638 nfs40_sequence_free_slot(res
);
642 #if defined(CONFIG_NFS_V4_1)
644 static void nfs41_sequence_free_slot(struct nfs4_sequence_res
*res
)
646 struct nfs4_session
*session
;
647 struct nfs4_slot_table
*tbl
;
648 struct nfs4_slot
*slot
= res
->sr_slot
;
649 bool send_new_highest_used_slotid
= false;
652 session
= tbl
->session
;
654 /* Bump the slot sequence number */
659 spin_lock(&tbl
->slot_tbl_lock
);
660 /* Be nice to the server: try to ensure that the last transmitted
661 * value for highest_user_slotid <= target_highest_slotid
663 if (tbl
->highest_used_slotid
> tbl
->target_highest_slotid
)
664 send_new_highest_used_slotid
= true;
666 if (nfs41_wake_and_assign_slot(tbl
, slot
)) {
667 send_new_highest_used_slotid
= false;
670 nfs4_free_slot(tbl
, slot
);
672 if (tbl
->highest_used_slotid
!= NFS4_NO_SLOT
)
673 send_new_highest_used_slotid
= false;
675 spin_unlock(&tbl
->slot_tbl_lock
);
677 if (send_new_highest_used_slotid
)
678 nfs41_notify_server(session
->clp
);
679 if (waitqueue_active(&tbl
->slot_waitq
))
680 wake_up_all(&tbl
->slot_waitq
);
683 static int nfs41_sequence_process(struct rpc_task
*task
,
684 struct nfs4_sequence_res
*res
)
686 struct nfs4_session
*session
;
687 struct nfs4_slot
*slot
= res
->sr_slot
;
688 struct nfs_client
*clp
;
689 bool interrupted
= false;
694 /* don't increment the sequence number if the task wasn't sent */
695 if (!RPC_WAS_SENT(task
))
698 session
= slot
->table
->session
;
700 if (slot
->interrupted
) {
701 slot
->interrupted
= 0;
705 trace_nfs4_sequence_done(session
, res
);
706 /* Check the SEQUENCE operation status */
707 switch (res
->sr_status
) {
709 /* If previous op on slot was interrupted and we reused
710 * the seq# and got a reply from the cache, then retry
712 if (task
->tk_status
== -EREMOTEIO
&& interrupted
) {
716 /* Update the slot's sequence and clientid lease timer */
719 do_renew_lease(clp
, res
->sr_timestamp
);
720 /* Check sequence flags */
721 nfs41_handle_sequence_flag_errors(clp
, res
->sr_status_flags
,
723 nfs41_update_target_slotid(slot
->table
, slot
, res
);
727 * sr_status remains 1 if an RPC level error occurred.
728 * The server may or may not have processed the sequence
730 * Mark the slot as having hosted an interrupted RPC call.
732 slot
->interrupted
= 1;
735 /* The server detected a resend of the RPC call and
736 * returned NFS4ERR_DELAY as per Section 2.10.6.2
739 dprintk("%s: slot=%u seq=%u: Operation in progress\n",
744 case -NFS4ERR_BADSLOT
:
746 * The slot id we used was probably retired. Try again
747 * using a different slot id.
750 case -NFS4ERR_SEQ_MISORDERED
:
752 * Was the last operation on this sequence interrupted?
753 * If so, retry after bumping the sequence number.
760 * Could this slot have been previously retired?
761 * If so, then the server may be expecting seq_nr = 1!
763 if (slot
->seq_nr
!= 1) {
768 case -NFS4ERR_SEQ_FALSE_RETRY
:
771 case -NFS4ERR_DEADSESSION
:
772 case -NFS4ERR_BADSESSION
:
773 nfs4_schedule_session_recovery(session
, res
->sr_status
);
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)
2265 /* even though OPEN succeeded, access is denied. Close the file */
2266 nfs4_close_state(state
, fmode
);
2271 * Note: On error, nfs4_proc_open will free the struct nfs4_opendata
2273 static int _nfs4_proc_open(struct nfs4_opendata
*data
)
2275 struct inode
*dir
= d_inode(data
->dir
);
2276 struct nfs_server
*server
= NFS_SERVER(dir
);
2277 struct nfs_openargs
*o_arg
= &data
->o_arg
;
2278 struct nfs_openres
*o_res
= &data
->o_res
;
2281 status
= nfs4_run_open_task(data
, 0);
2282 if (!data
->rpc_done
)
2285 if (status
== -NFS4ERR_BADNAME
&&
2286 !(o_arg
->open_flags
& O_CREAT
))
2291 nfs_fattr_map_and_free_names(server
, &data
->f_attr
);
2293 if (o_arg
->open_flags
& O_CREAT
) {
2294 if (o_arg
->open_flags
& O_EXCL
)
2295 data
->file_created
= 1;
2296 else if (o_res
->cinfo
.before
!= o_res
->cinfo
.after
)
2297 data
->file_created
= 1;
2298 if (data
->file_created
|| dir
->i_version
!= o_res
->cinfo
.after
)
2299 update_changeattr(dir
, &o_res
->cinfo
,
2300 o_res
->f_attr
->time_start
);
2302 if ((o_res
->rflags
& NFS4_OPEN_RESULT_LOCKTYPE_POSIX
) == 0)
2303 server
->caps
&= ~NFS_CAP_POSIX_LOCK
;
2304 if(o_res
->rflags
& NFS4_OPEN_RESULT_CONFIRM
) {
2305 status
= _nfs4_proc_open_confirm(data
);
2309 if (!(o_res
->f_attr
->valid
& NFS_ATTR_FATTR
))
2310 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
)) {
2453 nfs_finish_clear_delegation_stateid(state
, &stateid
);
2457 if (!test_and_clear_bit(NFS_DELEGATION_TEST_EXPIRED
, &delegation
->flags
)) {
2462 cred
= get_rpccred(delegation
->cred
);
2464 status
= nfs41_test_and_free_expired_stateid(server
, &stateid
, cred
);
2465 trace_nfs4_test_delegation_stateid(state
, NULL
, status
);
2466 if (status
== -NFS4ERR_EXPIRED
|| status
== -NFS4ERR_BAD_STATEID
)
2467 nfs_finish_clear_delegation_stateid(state
, &stateid
);
2473 * nfs41_check_expired_locks - possibly free a lock stateid
2475 * @state: NFSv4 state for an inode
2477 * Returns NFS_OK if recovery for this stateid is now finished.
2478 * Otherwise a negative NFS4ERR value is returned.
2480 static int nfs41_check_expired_locks(struct nfs4_state
*state
)
2482 int status
, ret
= NFS_OK
;
2483 struct nfs4_lock_state
*lsp
, *prev
= NULL
;
2484 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
2486 if (!test_bit(LK_STATE_IN_USE
, &state
->flags
))
2489 spin_lock(&state
->state_lock
);
2490 list_for_each_entry(lsp
, &state
->lock_states
, ls_locks
) {
2491 if (test_bit(NFS_LOCK_INITIALIZED
, &lsp
->ls_flags
)) {
2492 struct rpc_cred
*cred
= lsp
->ls_state
->owner
->so_cred
;
2494 atomic_inc(&lsp
->ls_count
);
2495 spin_unlock(&state
->state_lock
);
2497 nfs4_put_lock_state(prev
);
2500 status
= nfs41_test_and_free_expired_stateid(server
,
2503 trace_nfs4_test_lock_stateid(state
, lsp
, status
);
2504 if (status
== -NFS4ERR_EXPIRED
||
2505 status
== -NFS4ERR_BAD_STATEID
) {
2506 clear_bit(NFS_LOCK_INITIALIZED
, &lsp
->ls_flags
);
2507 lsp
->ls_stateid
.type
= NFS4_INVALID_STATEID_TYPE
;
2508 if (!recover_lost_locks
)
2509 set_bit(NFS_LOCK_LOST
, &lsp
->ls_flags
);
2510 } else if (status
!= NFS_OK
) {
2512 nfs4_put_lock_state(prev
);
2515 spin_lock(&state
->state_lock
);
2518 spin_unlock(&state
->state_lock
);
2519 nfs4_put_lock_state(prev
);
2525 * nfs41_check_open_stateid - possibly free an open stateid
2527 * @state: NFSv4 state for an inode
2529 * Returns NFS_OK if recovery for this stateid is now finished.
2530 * Otherwise a negative NFS4ERR value is returned.
2532 static int nfs41_check_open_stateid(struct nfs4_state
*state
)
2534 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
2535 nfs4_stateid
*stateid
= &state
->open_stateid
;
2536 struct rpc_cred
*cred
= state
->owner
->so_cred
;
2539 if (test_bit(NFS_OPEN_STATE
, &state
->flags
) == 0) {
2540 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) == 0) {
2541 if (nfs4_have_delegation(state
->inode
, state
->state
))
2543 return -NFS4ERR_OPENMODE
;
2545 return -NFS4ERR_BAD_STATEID
;
2547 status
= nfs41_test_and_free_expired_stateid(server
, stateid
, cred
);
2548 trace_nfs4_test_open_stateid(state
, NULL
, status
);
2549 if (status
== -NFS4ERR_EXPIRED
|| status
== -NFS4ERR_BAD_STATEID
) {
2550 clear_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
2551 clear_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
2552 clear_bit(NFS_O_RDWR_STATE
, &state
->flags
);
2553 clear_bit(NFS_OPEN_STATE
, &state
->flags
);
2554 stateid
->type
= NFS4_INVALID_STATEID_TYPE
;
2556 if (status
!= NFS_OK
)
2558 if (nfs_open_stateid_recover_openmode(state
))
2559 return -NFS4ERR_OPENMODE
;
2563 static int nfs41_open_expired(struct nfs4_state_owner
*sp
, struct nfs4_state
*state
)
2567 nfs41_check_delegation_stateid(state
);
2568 status
= nfs41_check_expired_locks(state
);
2569 if (status
!= NFS_OK
)
2571 status
= nfs41_check_open_stateid(state
);
2572 if (status
!= NFS_OK
)
2573 status
= nfs4_open_expired(sp
, state
);
2579 * on an EXCLUSIVE create, the server should send back a bitmask with FATTR4-*
2580 * fields corresponding to attributes that were used to store the verifier.
2581 * Make sure we clobber those fields in the later setattr call
2583 static inline void nfs4_exclusive_attrset(struct nfs4_opendata
*opendata
,
2584 struct iattr
*sattr
, struct nfs4_label
**label
)
2586 const u32
*attrset
= opendata
->o_res
.attrset
;
2588 if ((attrset
[1] & FATTR4_WORD1_TIME_ACCESS
) &&
2589 !(sattr
->ia_valid
& ATTR_ATIME_SET
))
2590 sattr
->ia_valid
|= ATTR_ATIME
;
2592 if ((attrset
[1] & FATTR4_WORD1_TIME_MODIFY
) &&
2593 !(sattr
->ia_valid
& ATTR_MTIME_SET
))
2594 sattr
->ia_valid
|= ATTR_MTIME
;
2596 /* Except MODE, it seems harmless of setting twice. */
2597 if (opendata
->o_arg
.createmode
!= NFS4_CREATE_EXCLUSIVE
&&
2598 attrset
[1] & FATTR4_WORD1_MODE
)
2599 sattr
->ia_valid
&= ~ATTR_MODE
;
2601 if (attrset
[2] & FATTR4_WORD2_SECURITY_LABEL
)
2605 static int _nfs4_open_and_get_state(struct nfs4_opendata
*opendata
,
2608 struct nfs_open_context
*ctx
)
2610 struct nfs4_state_owner
*sp
= opendata
->owner
;
2611 struct nfs_server
*server
= sp
->so_server
;
2612 struct dentry
*dentry
;
2613 struct nfs4_state
*state
;
2617 seq
= raw_seqcount_begin(&sp
->so_reclaim_seqcount
);
2619 ret
= _nfs4_proc_open(opendata
);
2623 state
= nfs4_opendata_to_nfs4_state(opendata
);
2624 ret
= PTR_ERR(state
);
2627 if (server
->caps
& NFS_CAP_POSIX_LOCK
)
2628 set_bit(NFS_STATE_POSIX_LOCKS
, &state
->flags
);
2629 if (opendata
->o_res
.rflags
& NFS4_OPEN_RESULT_MAY_NOTIFY_LOCK
)
2630 set_bit(NFS_STATE_MAY_NOTIFY_LOCK
, &state
->flags
);
2632 dentry
= opendata
->dentry
;
2633 if (d_really_is_negative(dentry
)) {
2634 struct dentry
*alias
;
2636 alias
= d_exact_alias(dentry
, state
->inode
);
2638 alias
= d_splice_alias(igrab(state
->inode
), dentry
);
2639 /* d_splice_alias() can't fail here - it's a non-directory */
2642 ctx
->dentry
= dentry
= alias
;
2644 nfs_set_verifier(dentry
,
2645 nfs_save_change_attribute(d_inode(opendata
->dir
)));
2648 ret
= nfs4_opendata_access(sp
->so_cred
, opendata
, state
, fmode
, flags
);
2653 if (d_inode(dentry
) == state
->inode
) {
2654 nfs_inode_attach_open_context(ctx
);
2655 if (read_seqcount_retry(&sp
->so_reclaim_seqcount
, seq
))
2656 nfs4_schedule_stateid_recovery(server
, state
);
2663 * Returns a referenced nfs4_state
2665 static int _nfs4_do_open(struct inode
*dir
,
2666 struct nfs_open_context
*ctx
,
2668 struct iattr
*sattr
,
2669 struct nfs4_label
*label
,
2672 struct nfs4_state_owner
*sp
;
2673 struct nfs4_state
*state
= NULL
;
2674 struct nfs_server
*server
= NFS_SERVER(dir
);
2675 struct nfs4_opendata
*opendata
;
2676 struct dentry
*dentry
= ctx
->dentry
;
2677 struct rpc_cred
*cred
= ctx
->cred
;
2678 struct nfs4_threshold
**ctx_th
= &ctx
->mdsthreshold
;
2679 fmode_t fmode
= ctx
->mode
& (FMODE_READ
|FMODE_WRITE
|FMODE_EXEC
);
2680 enum open_claim_type4 claim
= NFS4_OPEN_CLAIM_NULL
;
2681 struct nfs4_label
*olabel
= NULL
;
2684 /* Protect against reboot recovery conflicts */
2686 sp
= nfs4_get_state_owner(server
, cred
, GFP_KERNEL
);
2688 dprintk("nfs4_do_open: nfs4_get_state_owner failed!\n");
2691 status
= nfs4_client_recover_expired_lease(server
->nfs_client
);
2693 goto err_put_state_owner
;
2694 if (d_really_is_positive(dentry
))
2695 nfs4_return_incompatible_delegation(d_inode(dentry
), fmode
);
2697 if (d_really_is_positive(dentry
))
2698 claim
= NFS4_OPEN_CLAIM_FH
;
2699 opendata
= nfs4_opendata_alloc(dentry
, sp
, fmode
, flags
, sattr
,
2700 label
, claim
, GFP_KERNEL
);
2701 if (opendata
== NULL
)
2702 goto err_put_state_owner
;
2705 olabel
= nfs4_label_alloc(server
, GFP_KERNEL
);
2706 if (IS_ERR(olabel
)) {
2707 status
= PTR_ERR(olabel
);
2708 goto err_opendata_put
;
2712 if (server
->attr_bitmask
[2] & FATTR4_WORD2_MDSTHRESHOLD
) {
2713 if (!opendata
->f_attr
.mdsthreshold
) {
2714 opendata
->f_attr
.mdsthreshold
= pnfs_mdsthreshold_alloc();
2715 if (!opendata
->f_attr
.mdsthreshold
)
2716 goto err_free_label
;
2718 opendata
->o_arg
.open_bitmap
= &nfs4_pnfs_open_bitmap
[0];
2720 if (d_really_is_positive(dentry
))
2721 opendata
->state
= nfs4_get_open_state(d_inode(dentry
), sp
);
2723 status
= _nfs4_open_and_get_state(opendata
, fmode
, flags
, ctx
);
2725 goto err_free_label
;
2728 if ((opendata
->o_arg
.open_flags
& (O_CREAT
|O_EXCL
)) == (O_CREAT
|O_EXCL
) &&
2729 (opendata
->o_arg
.createmode
!= NFS4_CREATE_GUARDED
)) {
2730 nfs4_exclusive_attrset(opendata
, sattr
, &label
);
2732 * send create attributes which was not set by open
2733 * with an extra setattr.
2735 if (sattr
->ia_valid
& NFS4_VALID_ATTRS
) {
2736 nfs_fattr_init(opendata
->o_res
.f_attr
);
2737 status
= nfs4_do_setattr(state
->inode
, cred
,
2738 opendata
->o_res
.f_attr
, sattr
,
2739 ctx
, label
, olabel
);
2741 nfs_setattr_update_inode(state
->inode
, sattr
,
2742 opendata
->o_res
.f_attr
);
2743 nfs_setsecurity(state
->inode
, opendata
->o_res
.f_attr
, olabel
);
2747 if (opened
&& opendata
->file_created
)
2748 *opened
|= FILE_CREATED
;
2750 if (pnfs_use_threshold(ctx_th
, opendata
->f_attr
.mdsthreshold
, server
)) {
2751 *ctx_th
= opendata
->f_attr
.mdsthreshold
;
2752 opendata
->f_attr
.mdsthreshold
= NULL
;
2755 nfs4_label_free(olabel
);
2757 nfs4_opendata_put(opendata
);
2758 nfs4_put_state_owner(sp
);
2761 nfs4_label_free(olabel
);
2763 nfs4_opendata_put(opendata
);
2764 err_put_state_owner
:
2765 nfs4_put_state_owner(sp
);
2771 static struct nfs4_state
*nfs4_do_open(struct inode
*dir
,
2772 struct nfs_open_context
*ctx
,
2774 struct iattr
*sattr
,
2775 struct nfs4_label
*label
,
2778 struct nfs_server
*server
= NFS_SERVER(dir
);
2779 struct nfs4_exception exception
= { };
2780 struct nfs4_state
*res
;
2784 status
= _nfs4_do_open(dir
, ctx
, flags
, sattr
, label
, opened
);
2786 trace_nfs4_open_file(ctx
, flags
, status
);
2789 /* NOTE: BAD_SEQID means the server and client disagree about the
2790 * book-keeping w.r.t. state-changing operations
2791 * (OPEN/CLOSE/LOCK/LOCKU...)
2792 * It is actually a sign of a bug on the client or on the server.
2794 * If we receive a BAD_SEQID error in the particular case of
2795 * doing an OPEN, we assume that nfs_increment_open_seqid() will
2796 * have unhashed the old state_owner for us, and that we can
2797 * therefore safely retry using a new one. We should still warn
2798 * the user though...
2800 if (status
== -NFS4ERR_BAD_SEQID
) {
2801 pr_warn_ratelimited("NFS: v4 server %s "
2802 " returned a bad sequence-id error!\n",
2803 NFS_SERVER(dir
)->nfs_client
->cl_hostname
);
2804 exception
.retry
= 1;
2808 * BAD_STATEID on OPEN means that the server cancelled our
2809 * state before it received the OPEN_CONFIRM.
2810 * Recover by retrying the request as per the discussion
2811 * on Page 181 of RFC3530.
2813 if (status
== -NFS4ERR_BAD_STATEID
) {
2814 exception
.retry
= 1;
2817 if (status
== -EAGAIN
) {
2818 /* We must have found a delegation */
2819 exception
.retry
= 1;
2822 if (nfs4_clear_cap_atomic_open_v1(server
, status
, &exception
))
2824 res
= ERR_PTR(nfs4_handle_exception(server
,
2825 status
, &exception
));
2826 } while (exception
.retry
);
2830 static int _nfs4_do_setattr(struct inode
*inode
,
2831 struct nfs_setattrargs
*arg
,
2832 struct nfs_setattrres
*res
,
2833 struct rpc_cred
*cred
,
2834 struct nfs_open_context
*ctx
)
2836 struct nfs_server
*server
= NFS_SERVER(inode
);
2837 struct rpc_message msg
= {
2838 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETATTR
],
2843 struct rpc_cred
*delegation_cred
= NULL
;
2844 unsigned long timestamp
= jiffies
;
2849 nfs_fattr_init(res
->fattr
);
2851 /* Servers should only apply open mode checks for file size changes */
2852 truncate
= (arg
->iap
->ia_valid
& ATTR_SIZE
) ? true : false;
2853 fmode
= truncate
? FMODE_WRITE
: FMODE_READ
;
2855 if (nfs4_copy_delegation_stateid(inode
, fmode
, &arg
->stateid
, &delegation_cred
)) {
2856 /* Use that stateid */
2857 } else if (truncate
&& ctx
!= NULL
) {
2858 struct nfs_lock_context
*l_ctx
;
2859 if (!nfs4_valid_open_stateid(ctx
->state
))
2861 l_ctx
= nfs_get_lock_context(ctx
);
2863 return PTR_ERR(l_ctx
);
2864 status
= nfs4_select_rw_stateid(ctx
->state
, FMODE_WRITE
, l_ctx
,
2865 &arg
->stateid
, &delegation_cred
);
2866 nfs_put_lock_context(l_ctx
);
2870 nfs4_stateid_copy(&arg
->stateid
, &zero_stateid
);
2871 if (delegation_cred
)
2872 msg
.rpc_cred
= delegation_cred
;
2874 status
= nfs4_call_sync(server
->client
, server
, &msg
, &arg
->seq_args
, &res
->seq_res
, 1);
2876 put_rpccred(delegation_cred
);
2877 if (status
== 0 && ctx
!= NULL
)
2878 renew_lease(server
, timestamp
);
2879 trace_nfs4_setattr(inode
, &arg
->stateid
, status
);
2883 static int nfs4_do_setattr(struct inode
*inode
, struct rpc_cred
*cred
,
2884 struct nfs_fattr
*fattr
, struct iattr
*sattr
,
2885 struct nfs_open_context
*ctx
, struct nfs4_label
*ilabel
,
2886 struct nfs4_label
*olabel
)
2888 struct nfs_server
*server
= NFS_SERVER(inode
);
2889 struct nfs4_state
*state
= ctx
? ctx
->state
: NULL
;
2890 struct nfs_setattrargs arg
= {
2891 .fh
= NFS_FH(inode
),
2894 .bitmask
= server
->attr_bitmask
,
2897 struct nfs_setattrres res
= {
2902 struct nfs4_exception exception
= {
2905 .stateid
= &arg
.stateid
,
2909 arg
.bitmask
= nfs4_bitmask(server
, ilabel
);
2911 arg
.bitmask
= nfs4_bitmask(server
, olabel
);
2914 err
= _nfs4_do_setattr(inode
, &arg
, &res
, cred
, ctx
);
2916 case -NFS4ERR_OPENMODE
:
2917 if (!(sattr
->ia_valid
& ATTR_SIZE
)) {
2918 pr_warn_once("NFSv4: server %s is incorrectly "
2919 "applying open mode checks to "
2920 "a SETATTR that is not "
2921 "changing file size.\n",
2922 server
->nfs_client
->cl_hostname
);
2924 if (state
&& !(state
->state
& FMODE_WRITE
)) {
2926 if (sattr
->ia_valid
& ATTR_OPEN
)
2931 err
= nfs4_handle_exception(server
, err
, &exception
);
2932 } while (exception
.retry
);
2938 nfs4_wait_on_layoutreturn(struct inode
*inode
, struct rpc_task
*task
)
2940 if (inode
== NULL
|| !nfs_have_layout(inode
))
2943 return pnfs_wait_on_layoutreturn(inode
, task
);
2946 struct nfs4_closedata
{
2947 struct inode
*inode
;
2948 struct nfs4_state
*state
;
2949 struct nfs_closeargs arg
;
2950 struct nfs_closeres res
;
2952 struct nfs4_layoutreturn_args arg
;
2953 struct nfs4_layoutreturn_res res
;
2954 struct nfs4_xdr_opaque_data ld_private
;
2958 struct nfs_fattr fattr
;
2959 unsigned long timestamp
;
2962 static void nfs4_free_closedata(void *data
)
2964 struct nfs4_closedata
*calldata
= data
;
2965 struct nfs4_state_owner
*sp
= calldata
->state
->owner
;
2966 struct super_block
*sb
= calldata
->state
->inode
->i_sb
;
2968 if (calldata
->lr
.roc
)
2969 pnfs_roc_release(&calldata
->lr
.arg
, &calldata
->lr
.res
,
2970 calldata
->res
.lr_ret
);
2971 nfs4_put_open_state(calldata
->state
);
2972 nfs_free_seqid(calldata
->arg
.seqid
);
2973 nfs4_put_state_owner(sp
);
2974 nfs_sb_deactive(sb
);
2978 static void nfs4_close_done(struct rpc_task
*task
, void *data
)
2980 struct nfs4_closedata
*calldata
= data
;
2981 struct nfs4_state
*state
= calldata
->state
;
2982 struct nfs_server
*server
= NFS_SERVER(calldata
->inode
);
2983 nfs4_stateid
*res_stateid
= NULL
;
2985 dprintk("%s: begin!\n", __func__
);
2986 if (!nfs4_sequence_done(task
, &calldata
->res
.seq_res
))
2988 trace_nfs4_close(state
, &calldata
->arg
, &calldata
->res
, task
->tk_status
);
2990 /* Handle Layoutreturn errors */
2991 if (calldata
->arg
.lr_args
&& task
->tk_status
!= 0) {
2992 switch (calldata
->res
.lr_ret
) {
2994 calldata
->res
.lr_ret
= -NFS4ERR_NOMATCHING_LAYOUT
;
2997 calldata
->arg
.lr_args
= NULL
;
2998 calldata
->res
.lr_res
= NULL
;
3000 case -NFS4ERR_ADMIN_REVOKED
:
3001 case -NFS4ERR_DELEG_REVOKED
:
3002 case -NFS4ERR_EXPIRED
:
3003 case -NFS4ERR_BAD_STATEID
:
3004 case -NFS4ERR_OLD_STATEID
:
3005 case -NFS4ERR_UNKNOWN_LAYOUTTYPE
:
3006 case -NFS4ERR_WRONG_CRED
:
3007 calldata
->arg
.lr_args
= NULL
;
3008 calldata
->res
.lr_res
= NULL
;
3009 calldata
->res
.lr_ret
= 0;
3010 rpc_restart_call_prepare(task
);
3015 /* hmm. we are done with the inode, and in the process of freeing
3016 * the state_owner. we keep this around to process errors
3018 switch (task
->tk_status
) {
3020 res_stateid
= &calldata
->res
.stateid
;
3021 renew_lease(server
, calldata
->timestamp
);
3023 case -NFS4ERR_ACCESS
:
3024 if (calldata
->arg
.bitmask
!= NULL
) {
3025 calldata
->arg
.bitmask
= NULL
;
3026 calldata
->res
.fattr
= NULL
;
3027 task
->tk_status
= 0;
3028 rpc_restart_call_prepare(task
);
3033 case -NFS4ERR_ADMIN_REVOKED
:
3034 case -NFS4ERR_STALE_STATEID
:
3035 case -NFS4ERR_EXPIRED
:
3036 nfs4_free_revoked_stateid(server
,
3037 &calldata
->arg
.stateid
,
3038 task
->tk_msg
.rpc_cred
);
3039 case -NFS4ERR_OLD_STATEID
:
3040 case -NFS4ERR_BAD_STATEID
:
3041 if (!nfs4_stateid_match(&calldata
->arg
.stateid
,
3042 &state
->open_stateid
)) {
3043 rpc_restart_call_prepare(task
);
3046 if (calldata
->arg
.fmode
== 0)
3049 if (nfs4_async_handle_error(task
, server
, state
, NULL
) == -EAGAIN
) {
3050 rpc_restart_call_prepare(task
);
3054 nfs_clear_open_stateid(state
, &calldata
->arg
.stateid
,
3055 res_stateid
, calldata
->arg
.fmode
);
3057 nfs_release_seqid(calldata
->arg
.seqid
);
3058 nfs_refresh_inode(calldata
->inode
, &calldata
->fattr
);
3059 dprintk("%s: done, ret = %d!\n", __func__
, task
->tk_status
);
3062 static void nfs4_close_prepare(struct rpc_task
*task
, void *data
)
3064 struct nfs4_closedata
*calldata
= data
;
3065 struct nfs4_state
*state
= calldata
->state
;
3066 struct inode
*inode
= calldata
->inode
;
3067 bool is_rdonly
, is_wronly
, is_rdwr
;
3070 dprintk("%s: begin!\n", __func__
);
3071 if (nfs_wait_on_sequence(calldata
->arg
.seqid
, task
) != 0)
3074 task
->tk_msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_OPEN_DOWNGRADE
];
3075 spin_lock(&state
->owner
->so_lock
);
3076 is_rdwr
= test_bit(NFS_O_RDWR_STATE
, &state
->flags
);
3077 is_rdonly
= test_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
3078 is_wronly
= test_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
3079 nfs4_stateid_copy(&calldata
->arg
.stateid
, &state
->open_stateid
);
3080 /* Calculate the change in open mode */
3081 calldata
->arg
.fmode
= 0;
3082 if (state
->n_rdwr
== 0) {
3083 if (state
->n_rdonly
== 0)
3084 call_close
|= is_rdonly
;
3086 calldata
->arg
.fmode
|= FMODE_READ
;
3087 if (state
->n_wronly
== 0)
3088 call_close
|= is_wronly
;
3090 calldata
->arg
.fmode
|= FMODE_WRITE
;
3091 if (calldata
->arg
.fmode
!= (FMODE_READ
|FMODE_WRITE
))
3092 call_close
|= is_rdwr
;
3094 calldata
->arg
.fmode
|= FMODE_READ
|FMODE_WRITE
;
3096 if (!nfs4_valid_open_stateid(state
) ||
3097 test_bit(NFS_OPEN_STATE
, &state
->flags
) == 0)
3099 spin_unlock(&state
->owner
->so_lock
);
3102 /* Note: exit _without_ calling nfs4_close_done */
3106 if (!calldata
->lr
.roc
&& nfs4_wait_on_layoutreturn(inode
, task
)) {
3107 nfs_release_seqid(calldata
->arg
.seqid
);
3111 if (calldata
->arg
.fmode
== 0)
3112 task
->tk_msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_CLOSE
];
3114 if (calldata
->arg
.fmode
== 0 || calldata
->arg
.fmode
== FMODE_READ
) {
3115 /* Close-to-open cache consistency revalidation */
3116 if (!nfs4_have_delegation(inode
, FMODE_READ
))
3117 calldata
->arg
.bitmask
= NFS_SERVER(inode
)->cache_consistency_bitmask
;
3119 calldata
->arg
.bitmask
= NULL
;
3122 calldata
->arg
.share_access
=
3123 nfs4_map_atomic_open_share(NFS_SERVER(inode
),
3124 calldata
->arg
.fmode
, 0);
3126 if (calldata
->res
.fattr
== NULL
)
3127 calldata
->arg
.bitmask
= NULL
;
3128 else if (calldata
->arg
.bitmask
== NULL
)
3129 calldata
->res
.fattr
= NULL
;
3130 calldata
->timestamp
= jiffies
;
3131 if (nfs4_setup_sequence(NFS_SERVER(inode
)->nfs_client
,
3132 &calldata
->arg
.seq_args
,
3133 &calldata
->res
.seq_res
,
3135 nfs_release_seqid(calldata
->arg
.seqid
);
3136 dprintk("%s: done!\n", __func__
);
3139 task
->tk_action
= NULL
;
3141 nfs4_sequence_done(task
, &calldata
->res
.seq_res
);
3144 static const struct rpc_call_ops nfs4_close_ops
= {
3145 .rpc_call_prepare
= nfs4_close_prepare
,
3146 .rpc_call_done
= nfs4_close_done
,
3147 .rpc_release
= nfs4_free_closedata
,
3151 * It is possible for data to be read/written from a mem-mapped file
3152 * after the sys_close call (which hits the vfs layer as a flush).
3153 * This means that we can't safely call nfsv4 close on a file until
3154 * the inode is cleared. This in turn means that we are not good
3155 * NFSv4 citizens - we do not indicate to the server to update the file's
3156 * share state even when we are done with one of the three share
3157 * stateid's in the inode.
3159 * NOTE: Caller must be holding the sp->so_owner semaphore!
3161 int nfs4_do_close(struct nfs4_state
*state
, gfp_t gfp_mask
, int wait
)
3163 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
3164 struct nfs_seqid
*(*alloc_seqid
)(struct nfs_seqid_counter
*, gfp_t
);
3165 struct nfs4_closedata
*calldata
;
3166 struct nfs4_state_owner
*sp
= state
->owner
;
3167 struct rpc_task
*task
;
3168 struct rpc_message msg
= {
3169 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_CLOSE
],
3170 .rpc_cred
= state
->owner
->so_cred
,
3172 struct rpc_task_setup task_setup_data
= {
3173 .rpc_client
= server
->client
,
3174 .rpc_message
= &msg
,
3175 .callback_ops
= &nfs4_close_ops
,
3176 .workqueue
= nfsiod_workqueue
,
3177 .flags
= RPC_TASK_ASYNC
,
3179 int status
= -ENOMEM
;
3181 nfs4_state_protect(server
->nfs_client
, NFS_SP4_MACH_CRED_CLEANUP
,
3182 &task_setup_data
.rpc_client
, &msg
);
3184 calldata
= kzalloc(sizeof(*calldata
), gfp_mask
);
3185 if (calldata
== NULL
)
3187 nfs4_init_sequence(&calldata
->arg
.seq_args
, &calldata
->res
.seq_res
, 1);
3188 calldata
->inode
= state
->inode
;
3189 calldata
->state
= state
;
3190 calldata
->arg
.fh
= NFS_FH(state
->inode
);
3191 /* Serialization for the sequence id */
3192 alloc_seqid
= server
->nfs_client
->cl_mvops
->alloc_seqid
;
3193 calldata
->arg
.seqid
= alloc_seqid(&state
->owner
->so_seqid
, gfp_mask
);
3194 if (IS_ERR(calldata
->arg
.seqid
))
3195 goto out_free_calldata
;
3196 nfs_fattr_init(&calldata
->fattr
);
3197 calldata
->arg
.fmode
= 0;
3198 calldata
->lr
.arg
.ld_private
= &calldata
->lr
.ld_private
;
3199 calldata
->res
.fattr
= &calldata
->fattr
;
3200 calldata
->res
.seqid
= calldata
->arg
.seqid
;
3201 calldata
->res
.server
= server
;
3202 calldata
->res
.lr_ret
= -NFS4ERR_NOMATCHING_LAYOUT
;
3203 calldata
->lr
.roc
= pnfs_roc(state
->inode
,
3204 &calldata
->lr
.arg
, &calldata
->lr
.res
, msg
.rpc_cred
);
3205 if (calldata
->lr
.roc
) {
3206 calldata
->arg
.lr_args
= &calldata
->lr
.arg
;
3207 calldata
->res
.lr_res
= &calldata
->lr
.res
;
3209 nfs_sb_active(calldata
->inode
->i_sb
);
3211 msg
.rpc_argp
= &calldata
->arg
;
3212 msg
.rpc_resp
= &calldata
->res
;
3213 task_setup_data
.callback_data
= calldata
;
3214 task
= rpc_run_task(&task_setup_data
);
3216 return PTR_ERR(task
);
3219 status
= rpc_wait_for_completion_task(task
);
3225 nfs4_put_open_state(state
);
3226 nfs4_put_state_owner(sp
);
3230 static struct inode
*
3231 nfs4_atomic_open(struct inode
*dir
, struct nfs_open_context
*ctx
,
3232 int open_flags
, struct iattr
*attr
, int *opened
)
3234 struct nfs4_state
*state
;
3235 struct nfs4_label l
= {0, 0, 0, NULL
}, *label
= NULL
;
3237 label
= nfs4_label_init_security(dir
, ctx
->dentry
, attr
, &l
);
3239 /* Protect against concurrent sillydeletes */
3240 state
= nfs4_do_open(dir
, ctx
, open_flags
, attr
, label
, opened
);
3242 nfs4_label_release_security(label
);
3245 return ERR_CAST(state
);
3246 return state
->inode
;
3249 static void nfs4_close_context(struct nfs_open_context
*ctx
, int is_sync
)
3251 if (ctx
->state
== NULL
)
3254 nfs4_close_sync(ctx
->state
, ctx
->mode
);
3256 nfs4_close_state(ctx
->state
, ctx
->mode
);
3259 #define FATTR4_WORD1_NFS40_MASK (2*FATTR4_WORD1_MOUNTED_ON_FILEID - 1UL)
3260 #define FATTR4_WORD2_NFS41_MASK (2*FATTR4_WORD2_SUPPATTR_EXCLCREAT - 1UL)
3261 #define FATTR4_WORD2_NFS42_MASK (2*FATTR4_WORD2_MODE_UMASK - 1UL)
3263 static int _nfs4_server_capabilities(struct nfs_server
*server
, struct nfs_fh
*fhandle
)
3265 u32 bitmask
[3] = {}, minorversion
= server
->nfs_client
->cl_minorversion
;
3266 struct nfs4_server_caps_arg args
= {
3270 struct nfs4_server_caps_res res
= {};
3271 struct rpc_message msg
= {
3272 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SERVER_CAPS
],
3278 bitmask
[0] = FATTR4_WORD0_SUPPORTED_ATTRS
|
3279 FATTR4_WORD0_FH_EXPIRE_TYPE
|
3280 FATTR4_WORD0_LINK_SUPPORT
|
3281 FATTR4_WORD0_SYMLINK_SUPPORT
|
3282 FATTR4_WORD0_ACLSUPPORT
;
3284 bitmask
[2] = FATTR4_WORD2_SUPPATTR_EXCLCREAT
;
3286 status
= nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
3288 /* Sanity check the server answers */
3289 switch (minorversion
) {
3291 res
.attr_bitmask
[1] &= FATTR4_WORD1_NFS40_MASK
;
3292 res
.attr_bitmask
[2] = 0;
3295 res
.attr_bitmask
[2] &= FATTR4_WORD2_NFS41_MASK
;
3298 res
.attr_bitmask
[2] &= FATTR4_WORD2_NFS42_MASK
;
3300 memcpy(server
->attr_bitmask
, res
.attr_bitmask
, sizeof(server
->attr_bitmask
));
3301 server
->caps
&= ~(NFS_CAP_ACLS
|NFS_CAP_HARDLINKS
|
3302 NFS_CAP_SYMLINKS
|NFS_CAP_FILEID
|
3303 NFS_CAP_MODE
|NFS_CAP_NLINK
|NFS_CAP_OWNER
|
3304 NFS_CAP_OWNER_GROUP
|NFS_CAP_ATIME
|
3305 NFS_CAP_CTIME
|NFS_CAP_MTIME
|
3306 NFS_CAP_SECURITY_LABEL
);
3307 if (res
.attr_bitmask
[0] & FATTR4_WORD0_ACL
&&
3308 res
.acl_bitmask
& ACL4_SUPPORT_ALLOW_ACL
)
3309 server
->caps
|= NFS_CAP_ACLS
;
3310 if (res
.has_links
!= 0)
3311 server
->caps
|= NFS_CAP_HARDLINKS
;
3312 if (res
.has_symlinks
!= 0)
3313 server
->caps
|= NFS_CAP_SYMLINKS
;
3314 if (res
.attr_bitmask
[0] & FATTR4_WORD0_FILEID
)
3315 server
->caps
|= NFS_CAP_FILEID
;
3316 if (res
.attr_bitmask
[1] & FATTR4_WORD1_MODE
)
3317 server
->caps
|= NFS_CAP_MODE
;
3318 if (res
.attr_bitmask
[1] & FATTR4_WORD1_NUMLINKS
)
3319 server
->caps
|= NFS_CAP_NLINK
;
3320 if (res
.attr_bitmask
[1] & FATTR4_WORD1_OWNER
)
3321 server
->caps
|= NFS_CAP_OWNER
;
3322 if (res
.attr_bitmask
[1] & FATTR4_WORD1_OWNER_GROUP
)
3323 server
->caps
|= NFS_CAP_OWNER_GROUP
;
3324 if (res
.attr_bitmask
[1] & FATTR4_WORD1_TIME_ACCESS
)
3325 server
->caps
|= NFS_CAP_ATIME
;
3326 if (res
.attr_bitmask
[1] & FATTR4_WORD1_TIME_METADATA
)
3327 server
->caps
|= NFS_CAP_CTIME
;
3328 if (res
.attr_bitmask
[1] & FATTR4_WORD1_TIME_MODIFY
)
3329 server
->caps
|= NFS_CAP_MTIME
;
3330 #ifdef CONFIG_NFS_V4_SECURITY_LABEL
3331 if (res
.attr_bitmask
[2] & FATTR4_WORD2_SECURITY_LABEL
)
3332 server
->caps
|= NFS_CAP_SECURITY_LABEL
;
3334 memcpy(server
->attr_bitmask_nl
, res
.attr_bitmask
,
3335 sizeof(server
->attr_bitmask
));
3336 server
->attr_bitmask_nl
[2] &= ~FATTR4_WORD2_SECURITY_LABEL
;
3338 memcpy(server
->cache_consistency_bitmask
, res
.attr_bitmask
, sizeof(server
->cache_consistency_bitmask
));
3339 server
->cache_consistency_bitmask
[0] &= FATTR4_WORD0_CHANGE
|FATTR4_WORD0_SIZE
;
3340 server
->cache_consistency_bitmask
[1] &= FATTR4_WORD1_TIME_METADATA
|FATTR4_WORD1_TIME_MODIFY
;
3341 server
->cache_consistency_bitmask
[2] = 0;
3342 memcpy(server
->exclcreat_bitmask
, res
.exclcreat_bitmask
,
3343 sizeof(server
->exclcreat_bitmask
));
3344 server
->acl_bitmask
= res
.acl_bitmask
;
3345 server
->fh_expire_type
= res
.fh_expire_type
;
3351 int nfs4_server_capabilities(struct nfs_server
*server
, struct nfs_fh
*fhandle
)
3353 struct nfs4_exception exception
= { };
3356 err
= nfs4_handle_exception(server
,
3357 _nfs4_server_capabilities(server
, fhandle
),
3359 } while (exception
.retry
);
3363 static int _nfs4_lookup_root(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
3364 struct nfs_fsinfo
*info
)
3367 struct nfs4_lookup_root_arg args
= {
3370 struct nfs4_lookup_res res
= {
3372 .fattr
= info
->fattr
,
3375 struct rpc_message msg
= {
3376 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOOKUP_ROOT
],
3381 bitmask
[0] = nfs4_fattr_bitmap
[0];
3382 bitmask
[1] = nfs4_fattr_bitmap
[1];
3384 * Process the label in the upcoming getfattr
3386 bitmask
[2] = nfs4_fattr_bitmap
[2] & ~FATTR4_WORD2_SECURITY_LABEL
;
3388 nfs_fattr_init(info
->fattr
);
3389 return nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
3392 static int nfs4_lookup_root(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
3393 struct nfs_fsinfo
*info
)
3395 struct nfs4_exception exception
= { };
3398 err
= _nfs4_lookup_root(server
, fhandle
, info
);
3399 trace_nfs4_lookup_root(server
, fhandle
, info
->fattr
, err
);
3402 case -NFS4ERR_WRONGSEC
:
3405 err
= nfs4_handle_exception(server
, err
, &exception
);
3407 } while (exception
.retry
);
3412 static int nfs4_lookup_root_sec(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
3413 struct nfs_fsinfo
*info
, rpc_authflavor_t flavor
)
3415 struct rpc_auth_create_args auth_args
= {
3416 .pseudoflavor
= flavor
,
3418 struct rpc_auth
*auth
;
3421 auth
= rpcauth_create(&auth_args
, server
->client
);
3426 ret
= nfs4_lookup_root(server
, fhandle
, info
);
3432 * Retry pseudoroot lookup with various security flavors. We do this when:
3434 * NFSv4.0: the PUTROOTFH operation returns NFS4ERR_WRONGSEC
3435 * NFSv4.1: the server does not support the SECINFO_NO_NAME operation
3437 * Returns zero on success, or a negative NFS4ERR value, or a
3438 * negative errno value.
3440 static int nfs4_find_root_sec(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
3441 struct nfs_fsinfo
*info
)
3443 /* Per 3530bis 15.33.5 */
3444 static const rpc_authflavor_t flav_array
[] = {
3448 RPC_AUTH_UNIX
, /* courtesy */
3451 int status
= -EPERM
;
3454 if (server
->auth_info
.flavor_len
> 0) {
3455 /* try each flavor specified by user */
3456 for (i
= 0; i
< server
->auth_info
.flavor_len
; i
++) {
3457 status
= nfs4_lookup_root_sec(server
, fhandle
, info
,
3458 server
->auth_info
.flavors
[i
]);
3459 if (status
== -NFS4ERR_WRONGSEC
|| status
== -EACCES
)
3464 /* no flavors specified by user, try default list */
3465 for (i
= 0; i
< ARRAY_SIZE(flav_array
); i
++) {
3466 status
= nfs4_lookup_root_sec(server
, fhandle
, info
,
3468 if (status
== -NFS4ERR_WRONGSEC
|| status
== -EACCES
)
3475 * -EACCESS could mean that the user doesn't have correct permissions
3476 * to access the mount. It could also mean that we tried to mount
3477 * with a gss auth flavor, but rpc.gssd isn't running. Either way,
3478 * existing mount programs don't handle -EACCES very well so it should
3479 * be mapped to -EPERM instead.
3481 if (status
== -EACCES
)
3487 * nfs4_proc_get_rootfh - get file handle for server's pseudoroot
3488 * @server: initialized nfs_server handle
3489 * @fhandle: we fill in the pseudo-fs root file handle
3490 * @info: we fill in an FSINFO struct
3491 * @auth_probe: probe the auth flavours
3493 * Returns zero on success, or a negative errno.
3495 int nfs4_proc_get_rootfh(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
3496 struct nfs_fsinfo
*info
,
3502 status
= nfs4_lookup_root(server
, fhandle
, info
);
3504 if (auth_probe
|| status
== NFS4ERR_WRONGSEC
)
3505 status
= server
->nfs_client
->cl_mvops
->find_root_sec(server
,
3509 status
= nfs4_server_capabilities(server
, fhandle
);
3511 status
= nfs4_do_fsinfo(server
, fhandle
, info
);
3513 return nfs4_map_errors(status
);
3516 static int nfs4_proc_get_root(struct nfs_server
*server
, struct nfs_fh
*mntfh
,
3517 struct nfs_fsinfo
*info
)
3520 struct nfs_fattr
*fattr
= info
->fattr
;
3521 struct nfs4_label
*label
= NULL
;
3523 error
= nfs4_server_capabilities(server
, mntfh
);
3525 dprintk("nfs4_get_root: getcaps error = %d\n", -error
);
3529 label
= nfs4_label_alloc(server
, GFP_KERNEL
);
3531 return PTR_ERR(label
);
3533 error
= nfs4_proc_getattr(server
, mntfh
, fattr
, label
);
3535 dprintk("nfs4_get_root: getattr error = %d\n", -error
);
3536 goto err_free_label
;
3539 if (fattr
->valid
& NFS_ATTR_FATTR_FSID
&&
3540 !nfs_fsid_equal(&server
->fsid
, &fattr
->fsid
))
3541 memcpy(&server
->fsid
, &fattr
->fsid
, sizeof(server
->fsid
));
3544 nfs4_label_free(label
);
3550 * Get locations and (maybe) other attributes of a referral.
3551 * Note that we'll actually follow the referral later when
3552 * we detect fsid mismatch in inode revalidation
3554 static int nfs4_get_referral(struct rpc_clnt
*client
, struct inode
*dir
,
3555 const struct qstr
*name
, struct nfs_fattr
*fattr
,
3556 struct nfs_fh
*fhandle
)
3558 int status
= -ENOMEM
;
3559 struct page
*page
= NULL
;
3560 struct nfs4_fs_locations
*locations
= NULL
;
3562 page
= alloc_page(GFP_KERNEL
);
3565 locations
= kmalloc(sizeof(struct nfs4_fs_locations
), GFP_KERNEL
);
3566 if (locations
== NULL
)
3569 status
= nfs4_proc_fs_locations(client
, dir
, name
, locations
, page
);
3574 * If the fsid didn't change, this is a migration event, not a
3575 * referral. Cause us to drop into the exception handler, which
3576 * will kick off migration recovery.
3578 if (nfs_fsid_equal(&NFS_SERVER(dir
)->fsid
, &locations
->fattr
.fsid
)) {
3579 dprintk("%s: server did not return a different fsid for"
3580 " a referral at %s\n", __func__
, name
->name
);
3581 status
= -NFS4ERR_MOVED
;
3584 /* Fixup attributes for the nfs_lookup() call to nfs_fhget() */
3585 nfs_fixup_referral_attributes(&locations
->fattr
);
3587 /* replace the lookup nfs_fattr with the locations nfs_fattr */
3588 memcpy(fattr
, &locations
->fattr
, sizeof(struct nfs_fattr
));
3589 memset(fhandle
, 0, sizeof(struct nfs_fh
));
3597 static int _nfs4_proc_getattr(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
3598 struct nfs_fattr
*fattr
, struct nfs4_label
*label
)
3600 struct nfs4_getattr_arg args
= {
3602 .bitmask
= server
->attr_bitmask
,
3604 struct nfs4_getattr_res res
= {
3609 struct rpc_message msg
= {
3610 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GETATTR
],
3615 args
.bitmask
= nfs4_bitmask(server
, label
);
3617 nfs_fattr_init(fattr
);
3618 return nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
3621 static int nfs4_proc_getattr(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
3622 struct nfs_fattr
*fattr
, struct nfs4_label
*label
)
3624 struct nfs4_exception exception
= { };
3627 err
= _nfs4_proc_getattr(server
, fhandle
, fattr
, label
);
3628 trace_nfs4_getattr(server
, fhandle
, fattr
, err
);
3629 err
= nfs4_handle_exception(server
, err
,
3631 } while (exception
.retry
);
3636 * The file is not closed if it is opened due to the a request to change
3637 * the size of the file. The open call will not be needed once the
3638 * VFS layer lookup-intents are implemented.
3640 * Close is called when the inode is destroyed.
3641 * If we haven't opened the file for O_WRONLY, we
3642 * need to in the size_change case to obtain a stateid.
3645 * Because OPEN is always done by name in nfsv4, it is
3646 * possible that we opened a different file by the same
3647 * name. We can recognize this race condition, but we
3648 * can't do anything about it besides returning an error.
3650 * This will be fixed with VFS changes (lookup-intent).
3653 nfs4_proc_setattr(struct dentry
*dentry
, struct nfs_fattr
*fattr
,
3654 struct iattr
*sattr
)
3656 struct inode
*inode
= d_inode(dentry
);
3657 struct rpc_cred
*cred
= NULL
;
3658 struct nfs_open_context
*ctx
= NULL
;
3659 struct nfs4_label
*label
= NULL
;
3662 if (pnfs_ld_layoutret_on_setattr(inode
) &&
3663 sattr
->ia_valid
& ATTR_SIZE
&&
3664 sattr
->ia_size
< i_size_read(inode
))
3665 pnfs_commit_and_return_layout(inode
);
3667 nfs_fattr_init(fattr
);
3669 /* Deal with open(O_TRUNC) */
3670 if (sattr
->ia_valid
& ATTR_OPEN
)
3671 sattr
->ia_valid
&= ~(ATTR_MTIME
|ATTR_CTIME
);
3673 /* Optimization: if the end result is no change, don't RPC */
3674 if ((sattr
->ia_valid
& ~(ATTR_FILE
|ATTR_OPEN
)) == 0)
3677 /* Search for an existing open(O_WRITE) file */
3678 if (sattr
->ia_valid
& ATTR_FILE
) {
3680 ctx
= nfs_file_open_context(sattr
->ia_file
);
3685 label
= nfs4_label_alloc(NFS_SERVER(inode
), GFP_KERNEL
);
3687 return PTR_ERR(label
);
3689 status
= nfs4_do_setattr(inode
, cred
, fattr
, sattr
, ctx
, NULL
, label
);
3691 nfs_setattr_update_inode(inode
, sattr
, fattr
);
3692 nfs_setsecurity(inode
, fattr
, label
);
3694 nfs4_label_free(label
);
3698 static int _nfs4_proc_lookup(struct rpc_clnt
*clnt
, struct inode
*dir
,
3699 const struct qstr
*name
, struct nfs_fh
*fhandle
,
3700 struct nfs_fattr
*fattr
, struct nfs4_label
*label
)
3702 struct nfs_server
*server
= NFS_SERVER(dir
);
3704 struct nfs4_lookup_arg args
= {
3705 .bitmask
= server
->attr_bitmask
,
3706 .dir_fh
= NFS_FH(dir
),
3709 struct nfs4_lookup_res res
= {
3715 struct rpc_message msg
= {
3716 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOOKUP
],
3721 args
.bitmask
= nfs4_bitmask(server
, label
);
3723 nfs_fattr_init(fattr
);
3725 dprintk("NFS call lookup %s\n", name
->name
);
3726 status
= nfs4_call_sync(clnt
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
3727 dprintk("NFS reply lookup: %d\n", status
);
3731 static void nfs_fixup_secinfo_attributes(struct nfs_fattr
*fattr
)
3733 fattr
->valid
|= NFS_ATTR_FATTR_TYPE
| NFS_ATTR_FATTR_MODE
|
3734 NFS_ATTR_FATTR_NLINK
| NFS_ATTR_FATTR_MOUNTPOINT
;
3735 fattr
->mode
= S_IFDIR
| S_IRUGO
| S_IXUGO
;
3739 static int nfs4_proc_lookup_common(struct rpc_clnt
**clnt
, struct inode
*dir
,
3740 const struct qstr
*name
, struct nfs_fh
*fhandle
,
3741 struct nfs_fattr
*fattr
, struct nfs4_label
*label
)
3743 struct nfs4_exception exception
= { };
3744 struct rpc_clnt
*client
= *clnt
;
3747 err
= _nfs4_proc_lookup(client
, dir
, name
, fhandle
, fattr
, label
);
3748 trace_nfs4_lookup(dir
, name
, err
);
3750 case -NFS4ERR_BADNAME
:
3753 case -NFS4ERR_MOVED
:
3754 err
= nfs4_get_referral(client
, dir
, name
, fattr
, fhandle
);
3755 if (err
== -NFS4ERR_MOVED
)
3756 err
= nfs4_handle_exception(NFS_SERVER(dir
), err
, &exception
);
3758 case -NFS4ERR_WRONGSEC
:
3760 if (client
!= *clnt
)
3762 client
= nfs4_negotiate_security(client
, dir
, name
);
3764 return PTR_ERR(client
);
3766 exception
.retry
= 1;
3769 err
= nfs4_handle_exception(NFS_SERVER(dir
), err
, &exception
);
3771 } while (exception
.retry
);
3776 else if (client
!= *clnt
)
3777 rpc_shutdown_client(client
);
3782 static int nfs4_proc_lookup(struct inode
*dir
, const struct qstr
*name
,
3783 struct nfs_fh
*fhandle
, struct nfs_fattr
*fattr
,
3784 struct nfs4_label
*label
)
3787 struct rpc_clnt
*client
= NFS_CLIENT(dir
);
3789 status
= nfs4_proc_lookup_common(&client
, dir
, name
, fhandle
, fattr
, label
);
3790 if (client
!= NFS_CLIENT(dir
)) {
3791 rpc_shutdown_client(client
);
3792 nfs_fixup_secinfo_attributes(fattr
);
3798 nfs4_proc_lookup_mountpoint(struct inode
*dir
, const struct qstr
*name
,
3799 struct nfs_fh
*fhandle
, struct nfs_fattr
*fattr
)
3801 struct rpc_clnt
*client
= NFS_CLIENT(dir
);
3804 status
= nfs4_proc_lookup_common(&client
, dir
, name
, fhandle
, fattr
, NULL
);
3806 return ERR_PTR(status
);
3807 return (client
== NFS_CLIENT(dir
)) ? rpc_clone_client(client
) : client
;
3810 static int _nfs4_proc_access(struct inode
*inode
, struct nfs_access_entry
*entry
)
3812 struct nfs_server
*server
= NFS_SERVER(inode
);
3813 struct nfs4_accessargs args
= {
3814 .fh
= NFS_FH(inode
),
3815 .bitmask
= server
->cache_consistency_bitmask
,
3817 struct nfs4_accessres res
= {
3820 struct rpc_message msg
= {
3821 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_ACCESS
],
3824 .rpc_cred
= entry
->cred
,
3826 int mode
= entry
->mask
;
3830 * Determine which access bits we want to ask for...
3832 if (mode
& MAY_READ
)
3833 args
.access
|= NFS4_ACCESS_READ
;
3834 if (S_ISDIR(inode
->i_mode
)) {
3835 if (mode
& MAY_WRITE
)
3836 args
.access
|= NFS4_ACCESS_MODIFY
| NFS4_ACCESS_EXTEND
| NFS4_ACCESS_DELETE
;
3837 if (mode
& MAY_EXEC
)
3838 args
.access
|= NFS4_ACCESS_LOOKUP
;
3840 if (mode
& MAY_WRITE
)
3841 args
.access
|= NFS4_ACCESS_MODIFY
| NFS4_ACCESS_EXTEND
;
3842 if (mode
& MAY_EXEC
)
3843 args
.access
|= NFS4_ACCESS_EXECUTE
;
3846 res
.fattr
= nfs_alloc_fattr();
3847 if (res
.fattr
== NULL
)
3850 status
= nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
3852 nfs_access_set_mask(entry
, res
.access
);
3853 nfs_refresh_inode(inode
, res
.fattr
);
3855 nfs_free_fattr(res
.fattr
);
3859 static int nfs4_proc_access(struct inode
*inode
, struct nfs_access_entry
*entry
)
3861 struct nfs4_exception exception
= { };
3864 err
= _nfs4_proc_access(inode
, entry
);
3865 trace_nfs4_access(inode
, err
);
3866 err
= nfs4_handle_exception(NFS_SERVER(inode
), err
,
3868 } while (exception
.retry
);
3873 * TODO: For the time being, we don't try to get any attributes
3874 * along with any of the zero-copy operations READ, READDIR,
3877 * In the case of the first three, we want to put the GETATTR
3878 * after the read-type operation -- this is because it is hard
3879 * to predict the length of a GETATTR response in v4, and thus
3880 * align the READ data correctly. This means that the GETATTR
3881 * may end up partially falling into the page cache, and we should
3882 * shift it into the 'tail' of the xdr_buf before processing.
3883 * To do this efficiently, we need to know the total length
3884 * of data received, which doesn't seem to be available outside
3887 * In the case of WRITE, we also want to put the GETATTR after
3888 * the operation -- in this case because we want to make sure
3889 * we get the post-operation mtime and size.
3891 * Both of these changes to the XDR layer would in fact be quite
3892 * minor, but I decided to leave them for a subsequent patch.
3894 static int _nfs4_proc_readlink(struct inode
*inode
, struct page
*page
,
3895 unsigned int pgbase
, unsigned int pglen
)
3897 struct nfs4_readlink args
= {
3898 .fh
= NFS_FH(inode
),
3903 struct nfs4_readlink_res res
;
3904 struct rpc_message msg
= {
3905 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_READLINK
],
3910 return nfs4_call_sync(NFS_SERVER(inode
)->client
, NFS_SERVER(inode
), &msg
, &args
.seq_args
, &res
.seq_res
, 0);
3913 static int nfs4_proc_readlink(struct inode
*inode
, struct page
*page
,
3914 unsigned int pgbase
, unsigned int pglen
)
3916 struct nfs4_exception exception
= { };
3919 err
= _nfs4_proc_readlink(inode
, page
, pgbase
, pglen
);
3920 trace_nfs4_readlink(inode
, err
);
3921 err
= nfs4_handle_exception(NFS_SERVER(inode
), err
,
3923 } while (exception
.retry
);
3928 * This is just for mknod. open(O_CREAT) will always do ->open_context().
3931 nfs4_proc_create(struct inode
*dir
, struct dentry
*dentry
, struct iattr
*sattr
,
3934 struct nfs_server
*server
= NFS_SERVER(dir
);
3935 struct nfs4_label l
, *ilabel
= NULL
;
3936 struct nfs_open_context
*ctx
;
3937 struct nfs4_state
*state
;
3940 ctx
= alloc_nfs_open_context(dentry
, FMODE_READ
, NULL
);
3942 return PTR_ERR(ctx
);
3944 ilabel
= nfs4_label_init_security(dir
, dentry
, sattr
, &l
);
3946 if (!(server
->attr_bitmask
[2] & FATTR4_WORD2_MODE_UMASK
))
3947 sattr
->ia_mode
&= ~current_umask();
3948 state
= nfs4_do_open(dir
, ctx
, flags
, sattr
, ilabel
, NULL
);
3949 if (IS_ERR(state
)) {
3950 status
= PTR_ERR(state
);
3954 nfs4_label_release_security(ilabel
);
3955 put_nfs_open_context(ctx
);
3959 static int _nfs4_proc_remove(struct inode
*dir
, const struct qstr
*name
)
3961 struct nfs_server
*server
= NFS_SERVER(dir
);
3962 struct nfs_removeargs args
= {
3966 struct nfs_removeres res
= {
3969 struct rpc_message msg
= {
3970 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_REMOVE
],
3974 unsigned long timestamp
= jiffies
;
3977 status
= nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 1);
3979 update_changeattr(dir
, &res
.cinfo
, timestamp
);
3983 static int nfs4_proc_remove(struct inode
*dir
, const struct qstr
*name
)
3985 struct nfs4_exception exception
= { };
3988 err
= _nfs4_proc_remove(dir
, name
);
3989 trace_nfs4_remove(dir
, name
, err
);
3990 err
= nfs4_handle_exception(NFS_SERVER(dir
), err
,
3992 } while (exception
.retry
);
3996 static void nfs4_proc_unlink_setup(struct rpc_message
*msg
, struct inode
*dir
)
3998 struct nfs_server
*server
= NFS_SERVER(dir
);
3999 struct nfs_removeargs
*args
= msg
->rpc_argp
;
4000 struct nfs_removeres
*res
= msg
->rpc_resp
;
4002 res
->server
= server
;
4003 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_REMOVE
];
4004 nfs4_init_sequence(&args
->seq_args
, &res
->seq_res
, 1);
4006 nfs_fattr_init(res
->dir_attr
);
4009 static void nfs4_proc_unlink_rpc_prepare(struct rpc_task
*task
, struct nfs_unlinkdata
*data
)
4011 nfs4_setup_sequence(NFS_SB(data
->dentry
->d_sb
)->nfs_client
,
4012 &data
->args
.seq_args
,
4017 static int nfs4_proc_unlink_done(struct rpc_task
*task
, struct inode
*dir
)
4019 struct nfs_unlinkdata
*data
= task
->tk_calldata
;
4020 struct nfs_removeres
*res
= &data
->res
;
4022 if (!nfs4_sequence_done(task
, &res
->seq_res
))
4024 if (nfs4_async_handle_error(task
, res
->server
, NULL
,
4025 &data
->timeout
) == -EAGAIN
)
4027 if (task
->tk_status
== 0)
4028 update_changeattr(dir
, &res
->cinfo
, res
->dir_attr
->time_start
);
4032 static void nfs4_proc_rename_setup(struct rpc_message
*msg
, struct inode
*dir
)
4034 struct nfs_server
*server
= NFS_SERVER(dir
);
4035 struct nfs_renameargs
*arg
= msg
->rpc_argp
;
4036 struct nfs_renameres
*res
= msg
->rpc_resp
;
4038 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RENAME
];
4039 res
->server
= server
;
4040 nfs4_init_sequence(&arg
->seq_args
, &res
->seq_res
, 1);
4043 static void nfs4_proc_rename_rpc_prepare(struct rpc_task
*task
, struct nfs_renamedata
*data
)
4045 nfs4_setup_sequence(NFS_SERVER(data
->old_dir
)->nfs_client
,
4046 &data
->args
.seq_args
,
4051 static int nfs4_proc_rename_done(struct rpc_task
*task
, struct inode
*old_dir
,
4052 struct inode
*new_dir
)
4054 struct nfs_renamedata
*data
= task
->tk_calldata
;
4055 struct nfs_renameres
*res
= &data
->res
;
4057 if (!nfs4_sequence_done(task
, &res
->seq_res
))
4059 if (nfs4_async_handle_error(task
, res
->server
, NULL
, &data
->timeout
) == -EAGAIN
)
4062 if (task
->tk_status
== 0) {
4063 update_changeattr(old_dir
, &res
->old_cinfo
, res
->old_fattr
->time_start
);
4064 if (new_dir
!= old_dir
)
4065 update_changeattr(new_dir
, &res
->new_cinfo
, res
->new_fattr
->time_start
);
4070 static int _nfs4_proc_link(struct inode
*inode
, struct inode
*dir
, const struct qstr
*name
)
4072 struct nfs_server
*server
= NFS_SERVER(inode
);
4073 struct nfs4_link_arg arg
= {
4074 .fh
= NFS_FH(inode
),
4075 .dir_fh
= NFS_FH(dir
),
4077 .bitmask
= server
->attr_bitmask
,
4079 struct nfs4_link_res res
= {
4083 struct rpc_message msg
= {
4084 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LINK
],
4088 int status
= -ENOMEM
;
4090 res
.fattr
= nfs_alloc_fattr();
4091 if (res
.fattr
== NULL
)
4094 res
.label
= nfs4_label_alloc(server
, GFP_KERNEL
);
4095 if (IS_ERR(res
.label
)) {
4096 status
= PTR_ERR(res
.label
);
4099 arg
.bitmask
= nfs4_bitmask(server
, res
.label
);
4101 status
= nfs4_call_sync(server
->client
, server
, &msg
, &arg
.seq_args
, &res
.seq_res
, 1);
4103 update_changeattr(dir
, &res
.cinfo
, res
.fattr
->time_start
);
4104 status
= nfs_post_op_update_inode(inode
, res
.fattr
);
4106 nfs_setsecurity(inode
, res
.fattr
, res
.label
);
4110 nfs4_label_free(res
.label
);
4113 nfs_free_fattr(res
.fattr
);
4117 static int nfs4_proc_link(struct inode
*inode
, struct inode
*dir
, const struct qstr
*name
)
4119 struct nfs4_exception exception
= { };
4122 err
= nfs4_handle_exception(NFS_SERVER(inode
),
4123 _nfs4_proc_link(inode
, dir
, name
),
4125 } while (exception
.retry
);
4129 struct nfs4_createdata
{
4130 struct rpc_message msg
;
4131 struct nfs4_create_arg arg
;
4132 struct nfs4_create_res res
;
4134 struct nfs_fattr fattr
;
4135 struct nfs4_label
*label
;
4138 static struct nfs4_createdata
*nfs4_alloc_createdata(struct inode
*dir
,
4139 const struct qstr
*name
, struct iattr
*sattr
, u32 ftype
)
4141 struct nfs4_createdata
*data
;
4143 data
= kzalloc(sizeof(*data
), GFP_KERNEL
);
4145 struct nfs_server
*server
= NFS_SERVER(dir
);
4147 data
->label
= nfs4_label_alloc(server
, GFP_KERNEL
);
4148 if (IS_ERR(data
->label
))
4151 data
->msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_CREATE
];
4152 data
->msg
.rpc_argp
= &data
->arg
;
4153 data
->msg
.rpc_resp
= &data
->res
;
4154 data
->arg
.dir_fh
= NFS_FH(dir
);
4155 data
->arg
.server
= server
;
4156 data
->arg
.name
= name
;
4157 data
->arg
.attrs
= sattr
;
4158 data
->arg
.ftype
= ftype
;
4159 data
->arg
.bitmask
= nfs4_bitmask(server
, data
->label
);
4160 data
->arg
.umask
= current_umask();
4161 data
->res
.server
= server
;
4162 data
->res
.fh
= &data
->fh
;
4163 data
->res
.fattr
= &data
->fattr
;
4164 data
->res
.label
= data
->label
;
4165 nfs_fattr_init(data
->res
.fattr
);
4173 static int nfs4_do_create(struct inode
*dir
, struct dentry
*dentry
, struct nfs4_createdata
*data
)
4175 int status
= nfs4_call_sync(NFS_SERVER(dir
)->client
, NFS_SERVER(dir
), &data
->msg
,
4176 &data
->arg
.seq_args
, &data
->res
.seq_res
, 1);
4178 update_changeattr(dir
, &data
->res
.dir_cinfo
,
4179 data
->res
.fattr
->time_start
);
4180 status
= nfs_instantiate(dentry
, data
->res
.fh
, data
->res
.fattr
, data
->res
.label
);
4185 static void nfs4_free_createdata(struct nfs4_createdata
*data
)
4187 nfs4_label_free(data
->label
);
4191 static int _nfs4_proc_symlink(struct inode
*dir
, struct dentry
*dentry
,
4192 struct page
*page
, unsigned int len
, struct iattr
*sattr
,
4193 struct nfs4_label
*label
)
4195 struct nfs4_createdata
*data
;
4196 int status
= -ENAMETOOLONG
;
4198 if (len
> NFS4_MAXPATHLEN
)
4202 data
= nfs4_alloc_createdata(dir
, &dentry
->d_name
, sattr
, NF4LNK
);
4206 data
->msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SYMLINK
];
4207 data
->arg
.u
.symlink
.pages
= &page
;
4208 data
->arg
.u
.symlink
.len
= len
;
4209 data
->arg
.label
= label
;
4211 status
= nfs4_do_create(dir
, dentry
, data
);
4213 nfs4_free_createdata(data
);
4218 static int nfs4_proc_symlink(struct inode
*dir
, struct dentry
*dentry
,
4219 struct page
*page
, unsigned int len
, struct iattr
*sattr
)
4221 struct nfs4_exception exception
= { };
4222 struct nfs4_label l
, *label
= NULL
;
4225 label
= nfs4_label_init_security(dir
, dentry
, sattr
, &l
);
4228 err
= _nfs4_proc_symlink(dir
, dentry
, page
, len
, sattr
, label
);
4229 trace_nfs4_symlink(dir
, &dentry
->d_name
, err
);
4230 err
= nfs4_handle_exception(NFS_SERVER(dir
), err
,
4232 } while (exception
.retry
);
4234 nfs4_label_release_security(label
);
4238 static int _nfs4_proc_mkdir(struct inode
*dir
, struct dentry
*dentry
,
4239 struct iattr
*sattr
, struct nfs4_label
*label
)
4241 struct nfs4_createdata
*data
;
4242 int status
= -ENOMEM
;
4244 data
= nfs4_alloc_createdata(dir
, &dentry
->d_name
, sattr
, NF4DIR
);
4248 data
->arg
.label
= label
;
4249 status
= nfs4_do_create(dir
, dentry
, data
);
4251 nfs4_free_createdata(data
);
4256 static int nfs4_proc_mkdir(struct inode
*dir
, struct dentry
*dentry
,
4257 struct iattr
*sattr
)
4259 struct nfs_server
*server
= NFS_SERVER(dir
);
4260 struct nfs4_exception exception
= { };
4261 struct nfs4_label l
, *label
= NULL
;
4264 label
= nfs4_label_init_security(dir
, dentry
, sattr
, &l
);
4266 if (!(server
->attr_bitmask
[2] & FATTR4_WORD2_MODE_UMASK
))
4267 sattr
->ia_mode
&= ~current_umask();
4269 err
= _nfs4_proc_mkdir(dir
, dentry
, sattr
, label
);
4270 trace_nfs4_mkdir(dir
, &dentry
->d_name
, err
);
4271 err
= nfs4_handle_exception(NFS_SERVER(dir
), err
,
4273 } while (exception
.retry
);
4274 nfs4_label_release_security(label
);
4279 static int _nfs4_proc_readdir(struct dentry
*dentry
, struct rpc_cred
*cred
,
4280 u64 cookie
, struct page
**pages
, unsigned int count
, int plus
)
4282 struct inode
*dir
= d_inode(dentry
);
4283 struct nfs4_readdir_arg args
= {
4288 .bitmask
= NFS_SERVER(d_inode(dentry
))->attr_bitmask
,
4291 struct nfs4_readdir_res res
;
4292 struct rpc_message msg
= {
4293 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_READDIR
],
4300 dprintk("%s: dentry = %pd2, cookie = %Lu\n", __func__
,
4302 (unsigned long long)cookie
);
4303 nfs4_setup_readdir(cookie
, NFS_I(dir
)->cookieverf
, dentry
, &args
);
4304 res
.pgbase
= args
.pgbase
;
4305 status
= nfs4_call_sync(NFS_SERVER(dir
)->client
, NFS_SERVER(dir
), &msg
, &args
.seq_args
, &res
.seq_res
, 0);
4307 memcpy(NFS_I(dir
)->cookieverf
, res
.verifier
.data
, NFS4_VERIFIER_SIZE
);
4308 status
+= args
.pgbase
;
4311 nfs_invalidate_atime(dir
);
4313 dprintk("%s: returns %d\n", __func__
, status
);
4317 static int nfs4_proc_readdir(struct dentry
*dentry
, struct rpc_cred
*cred
,
4318 u64 cookie
, struct page
**pages
, unsigned int count
, int plus
)
4320 struct nfs4_exception exception
= { };
4323 err
= _nfs4_proc_readdir(dentry
, cred
, cookie
,
4324 pages
, count
, plus
);
4325 trace_nfs4_readdir(d_inode(dentry
), err
);
4326 err
= nfs4_handle_exception(NFS_SERVER(d_inode(dentry
)), err
,
4328 } while (exception
.retry
);
4332 static int _nfs4_proc_mknod(struct inode
*dir
, struct dentry
*dentry
,
4333 struct iattr
*sattr
, struct nfs4_label
*label
, dev_t rdev
)
4335 struct nfs4_createdata
*data
;
4336 int mode
= sattr
->ia_mode
;
4337 int status
= -ENOMEM
;
4339 data
= nfs4_alloc_createdata(dir
, &dentry
->d_name
, sattr
, NF4SOCK
);
4344 data
->arg
.ftype
= NF4FIFO
;
4345 else if (S_ISBLK(mode
)) {
4346 data
->arg
.ftype
= NF4BLK
;
4347 data
->arg
.u
.device
.specdata1
= MAJOR(rdev
);
4348 data
->arg
.u
.device
.specdata2
= MINOR(rdev
);
4350 else if (S_ISCHR(mode
)) {
4351 data
->arg
.ftype
= NF4CHR
;
4352 data
->arg
.u
.device
.specdata1
= MAJOR(rdev
);
4353 data
->arg
.u
.device
.specdata2
= MINOR(rdev
);
4354 } else if (!S_ISSOCK(mode
)) {
4359 data
->arg
.label
= label
;
4360 status
= nfs4_do_create(dir
, dentry
, data
);
4362 nfs4_free_createdata(data
);
4367 static int nfs4_proc_mknod(struct inode
*dir
, struct dentry
*dentry
,
4368 struct iattr
*sattr
, dev_t rdev
)
4370 struct nfs_server
*server
= NFS_SERVER(dir
);
4371 struct nfs4_exception exception
= { };
4372 struct nfs4_label l
, *label
= NULL
;
4375 label
= nfs4_label_init_security(dir
, dentry
, sattr
, &l
);
4377 if (!(server
->attr_bitmask
[2] & FATTR4_WORD2_MODE_UMASK
))
4378 sattr
->ia_mode
&= ~current_umask();
4380 err
= _nfs4_proc_mknod(dir
, dentry
, sattr
, label
, rdev
);
4381 trace_nfs4_mknod(dir
, &dentry
->d_name
, err
);
4382 err
= nfs4_handle_exception(NFS_SERVER(dir
), err
,
4384 } while (exception
.retry
);
4386 nfs4_label_release_security(label
);
4391 static int _nfs4_proc_statfs(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
4392 struct nfs_fsstat
*fsstat
)
4394 struct nfs4_statfs_arg args
= {
4396 .bitmask
= server
->attr_bitmask
,
4398 struct nfs4_statfs_res res
= {
4401 struct rpc_message msg
= {
4402 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_STATFS
],
4407 nfs_fattr_init(fsstat
->fattr
);
4408 return nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
4411 static int nfs4_proc_statfs(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fsstat
*fsstat
)
4413 struct nfs4_exception exception
= { };
4416 err
= nfs4_handle_exception(server
,
4417 _nfs4_proc_statfs(server
, fhandle
, fsstat
),
4419 } while (exception
.retry
);
4423 static int _nfs4_do_fsinfo(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
4424 struct nfs_fsinfo
*fsinfo
)
4426 struct nfs4_fsinfo_arg args
= {
4428 .bitmask
= server
->attr_bitmask
,
4430 struct nfs4_fsinfo_res res
= {
4433 struct rpc_message msg
= {
4434 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_FSINFO
],
4439 return nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
4442 static int nfs4_do_fsinfo(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fsinfo
*fsinfo
)
4444 struct nfs4_exception exception
= { };
4445 unsigned long now
= jiffies
;
4449 err
= _nfs4_do_fsinfo(server
, fhandle
, fsinfo
);
4450 trace_nfs4_fsinfo(server
, fhandle
, fsinfo
->fattr
, err
);
4452 nfs4_set_lease_period(server
->nfs_client
,
4453 fsinfo
->lease_time
* HZ
,
4457 err
= nfs4_handle_exception(server
, err
, &exception
);
4458 } while (exception
.retry
);
4462 static int nfs4_proc_fsinfo(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fsinfo
*fsinfo
)
4466 nfs_fattr_init(fsinfo
->fattr
);
4467 error
= nfs4_do_fsinfo(server
, fhandle
, fsinfo
);
4469 /* block layout checks this! */
4470 server
->pnfs_blksize
= fsinfo
->blksize
;
4471 set_pnfs_layoutdriver(server
, fhandle
, fsinfo
);
4477 static int _nfs4_proc_pathconf(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
4478 struct nfs_pathconf
*pathconf
)
4480 struct nfs4_pathconf_arg args
= {
4482 .bitmask
= server
->attr_bitmask
,
4484 struct nfs4_pathconf_res res
= {
4485 .pathconf
= pathconf
,
4487 struct rpc_message msg
= {
4488 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_PATHCONF
],
4493 /* None of the pathconf attributes are mandatory to implement */
4494 if ((args
.bitmask
[0] & nfs4_pathconf_bitmap
[0]) == 0) {
4495 memset(pathconf
, 0, sizeof(*pathconf
));
4499 nfs_fattr_init(pathconf
->fattr
);
4500 return nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
4503 static int nfs4_proc_pathconf(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
4504 struct nfs_pathconf
*pathconf
)
4506 struct nfs4_exception exception
= { };
4510 err
= nfs4_handle_exception(server
,
4511 _nfs4_proc_pathconf(server
, fhandle
, pathconf
),
4513 } while (exception
.retry
);
4517 int nfs4_set_rw_stateid(nfs4_stateid
*stateid
,
4518 const struct nfs_open_context
*ctx
,
4519 const struct nfs_lock_context
*l_ctx
,
4522 return nfs4_select_rw_stateid(ctx
->state
, fmode
, l_ctx
, stateid
, NULL
);
4524 EXPORT_SYMBOL_GPL(nfs4_set_rw_stateid
);
4526 static bool nfs4_stateid_is_current(nfs4_stateid
*stateid
,
4527 const struct nfs_open_context
*ctx
,
4528 const struct nfs_lock_context
*l_ctx
,
4531 nfs4_stateid current_stateid
;
4533 /* If the current stateid represents a lost lock, then exit */
4534 if (nfs4_set_rw_stateid(¤t_stateid
, ctx
, l_ctx
, fmode
) == -EIO
)
4536 return nfs4_stateid_match(stateid
, ¤t_stateid
);
4539 static bool nfs4_error_stateid_expired(int err
)
4542 case -NFS4ERR_DELEG_REVOKED
:
4543 case -NFS4ERR_ADMIN_REVOKED
:
4544 case -NFS4ERR_BAD_STATEID
:
4545 case -NFS4ERR_STALE_STATEID
:
4546 case -NFS4ERR_OLD_STATEID
:
4547 case -NFS4ERR_OPENMODE
:
4548 case -NFS4ERR_EXPIRED
:
4554 static int nfs4_read_done_cb(struct rpc_task
*task
, struct nfs_pgio_header
*hdr
)
4556 struct nfs_server
*server
= NFS_SERVER(hdr
->inode
);
4558 trace_nfs4_read(hdr
, task
->tk_status
);
4559 if (task
->tk_status
< 0) {
4560 struct nfs4_exception exception
= {
4561 .inode
= hdr
->inode
,
4562 .state
= hdr
->args
.context
->state
,
4563 .stateid
= &hdr
->args
.stateid
,
4565 task
->tk_status
= nfs4_async_handle_exception(task
,
4566 server
, task
->tk_status
, &exception
);
4567 if (exception
.retry
) {
4568 rpc_restart_call_prepare(task
);
4573 if (task
->tk_status
> 0)
4574 renew_lease(server
, hdr
->timestamp
);
4578 static bool nfs4_read_stateid_changed(struct rpc_task
*task
,
4579 struct nfs_pgio_args
*args
)
4582 if (!nfs4_error_stateid_expired(task
->tk_status
) ||
4583 nfs4_stateid_is_current(&args
->stateid
,
4588 rpc_restart_call_prepare(task
);
4592 static int nfs4_read_done(struct rpc_task
*task
, struct nfs_pgio_header
*hdr
)
4595 dprintk("--> %s\n", __func__
);
4597 if (!nfs4_sequence_done(task
, &hdr
->res
.seq_res
))
4599 if (nfs4_read_stateid_changed(task
, &hdr
->args
))
4601 if (task
->tk_status
> 0)
4602 nfs_invalidate_atime(hdr
->inode
);
4603 return hdr
->pgio_done_cb
? hdr
->pgio_done_cb(task
, hdr
) :
4604 nfs4_read_done_cb(task
, hdr
);
4607 static void nfs4_proc_read_setup(struct nfs_pgio_header
*hdr
,
4608 struct rpc_message
*msg
)
4610 hdr
->timestamp
= jiffies
;
4611 if (!hdr
->pgio_done_cb
)
4612 hdr
->pgio_done_cb
= nfs4_read_done_cb
;
4613 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_READ
];
4614 nfs4_init_sequence(&hdr
->args
.seq_args
, &hdr
->res
.seq_res
, 0);
4617 static int nfs4_proc_pgio_rpc_prepare(struct rpc_task
*task
,
4618 struct nfs_pgio_header
*hdr
)
4620 if (nfs4_setup_sequence(NFS_SERVER(hdr
->inode
)->nfs_client
,
4621 &hdr
->args
.seq_args
,
4625 if (nfs4_set_rw_stateid(&hdr
->args
.stateid
, hdr
->args
.context
,
4626 hdr
->args
.lock_context
,
4627 hdr
->rw_ops
->rw_mode
) == -EIO
)
4629 if (unlikely(test_bit(NFS_CONTEXT_BAD
, &hdr
->args
.context
->flags
)))
4634 static int nfs4_write_done_cb(struct rpc_task
*task
,
4635 struct nfs_pgio_header
*hdr
)
4637 struct inode
*inode
= hdr
->inode
;
4639 trace_nfs4_write(hdr
, task
->tk_status
);
4640 if (task
->tk_status
< 0) {
4641 struct nfs4_exception exception
= {
4642 .inode
= hdr
->inode
,
4643 .state
= hdr
->args
.context
->state
,
4644 .stateid
= &hdr
->args
.stateid
,
4646 task
->tk_status
= nfs4_async_handle_exception(task
,
4647 NFS_SERVER(inode
), task
->tk_status
,
4649 if (exception
.retry
) {
4650 rpc_restart_call_prepare(task
);
4654 if (task
->tk_status
>= 0) {
4655 renew_lease(NFS_SERVER(inode
), hdr
->timestamp
);
4656 nfs_writeback_update_inode(hdr
);
4661 static bool nfs4_write_stateid_changed(struct rpc_task
*task
,
4662 struct nfs_pgio_args
*args
)
4665 if (!nfs4_error_stateid_expired(task
->tk_status
) ||
4666 nfs4_stateid_is_current(&args
->stateid
,
4671 rpc_restart_call_prepare(task
);
4675 static int nfs4_write_done(struct rpc_task
*task
, struct nfs_pgio_header
*hdr
)
4677 if (!nfs4_sequence_done(task
, &hdr
->res
.seq_res
))
4679 if (nfs4_write_stateid_changed(task
, &hdr
->args
))
4681 return hdr
->pgio_done_cb
? hdr
->pgio_done_cb(task
, hdr
) :
4682 nfs4_write_done_cb(task
, hdr
);
4686 bool nfs4_write_need_cache_consistency_data(struct nfs_pgio_header
*hdr
)
4688 /* Don't request attributes for pNFS or O_DIRECT writes */
4689 if (hdr
->ds_clp
!= NULL
|| hdr
->dreq
!= NULL
)
4691 /* Otherwise, request attributes if and only if we don't hold
4694 return nfs4_have_delegation(hdr
->inode
, FMODE_READ
) == 0;
4697 static void nfs4_proc_write_setup(struct nfs_pgio_header
*hdr
,
4698 struct rpc_message
*msg
)
4700 struct nfs_server
*server
= NFS_SERVER(hdr
->inode
);
4702 if (!nfs4_write_need_cache_consistency_data(hdr
)) {
4703 hdr
->args
.bitmask
= NULL
;
4704 hdr
->res
.fattr
= NULL
;
4706 hdr
->args
.bitmask
= server
->cache_consistency_bitmask
;
4708 if (!hdr
->pgio_done_cb
)
4709 hdr
->pgio_done_cb
= nfs4_write_done_cb
;
4710 hdr
->res
.server
= server
;
4711 hdr
->timestamp
= jiffies
;
4713 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_WRITE
];
4714 nfs4_init_sequence(&hdr
->args
.seq_args
, &hdr
->res
.seq_res
, 1);
4717 static void nfs4_proc_commit_rpc_prepare(struct rpc_task
*task
, struct nfs_commit_data
*data
)
4719 nfs4_setup_sequence(NFS_SERVER(data
->inode
)->nfs_client
,
4720 &data
->args
.seq_args
,
4725 static int nfs4_commit_done_cb(struct rpc_task
*task
, struct nfs_commit_data
*data
)
4727 struct inode
*inode
= data
->inode
;
4729 trace_nfs4_commit(data
, task
->tk_status
);
4730 if (nfs4_async_handle_error(task
, NFS_SERVER(inode
),
4731 NULL
, NULL
) == -EAGAIN
) {
4732 rpc_restart_call_prepare(task
);
4738 static int nfs4_commit_done(struct rpc_task
*task
, struct nfs_commit_data
*data
)
4740 if (!nfs4_sequence_done(task
, &data
->res
.seq_res
))
4742 return data
->commit_done_cb(task
, data
);
4745 static void nfs4_proc_commit_setup(struct nfs_commit_data
*data
, struct rpc_message
*msg
)
4747 struct nfs_server
*server
= NFS_SERVER(data
->inode
);
4749 if (data
->commit_done_cb
== NULL
)
4750 data
->commit_done_cb
= nfs4_commit_done_cb
;
4751 data
->res
.server
= server
;
4752 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_COMMIT
];
4753 nfs4_init_sequence(&data
->args
.seq_args
, &data
->res
.seq_res
, 1);
4756 struct nfs4_renewdata
{
4757 struct nfs_client
*client
;
4758 unsigned long timestamp
;
4762 * nfs4_proc_async_renew(): This is not one of the nfs_rpc_ops; it is a special
4763 * standalone procedure for queueing an asynchronous RENEW.
4765 static void nfs4_renew_release(void *calldata
)
4767 struct nfs4_renewdata
*data
= calldata
;
4768 struct nfs_client
*clp
= data
->client
;
4770 if (atomic_read(&clp
->cl_count
) > 1)
4771 nfs4_schedule_state_renewal(clp
);
4772 nfs_put_client(clp
);
4776 static void nfs4_renew_done(struct rpc_task
*task
, void *calldata
)
4778 struct nfs4_renewdata
*data
= calldata
;
4779 struct nfs_client
*clp
= data
->client
;
4780 unsigned long timestamp
= data
->timestamp
;
4782 trace_nfs4_renew_async(clp
, task
->tk_status
);
4783 switch (task
->tk_status
) {
4786 case -NFS4ERR_LEASE_MOVED
:
4787 nfs4_schedule_lease_moved_recovery(clp
);
4790 /* Unless we're shutting down, schedule state recovery! */
4791 if (test_bit(NFS_CS_RENEWD
, &clp
->cl_res_state
) == 0)
4793 if (task
->tk_status
!= NFS4ERR_CB_PATH_DOWN
) {
4794 nfs4_schedule_lease_recovery(clp
);
4797 nfs4_schedule_path_down_recovery(clp
);
4799 do_renew_lease(clp
, timestamp
);
4802 static const struct rpc_call_ops nfs4_renew_ops
= {
4803 .rpc_call_done
= nfs4_renew_done
,
4804 .rpc_release
= nfs4_renew_release
,
4807 static int nfs4_proc_async_renew(struct nfs_client
*clp
, struct rpc_cred
*cred
, unsigned renew_flags
)
4809 struct rpc_message msg
= {
4810 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RENEW
],
4814 struct nfs4_renewdata
*data
;
4816 if (renew_flags
== 0)
4818 if (!atomic_inc_not_zero(&clp
->cl_count
))
4820 data
= kmalloc(sizeof(*data
), GFP_NOFS
);
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
] = {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
);
4981 int ret
= -ENOMEM
, i
;
4983 /* As long as we're doing a round trip to the server anyway,
4984 * let's be prepared for a page of acl data. */
4987 if (npages
> ARRAY_SIZE(pages
))
4990 for (i
= 0; i
< npages
; i
++) {
4991 pages
[i
] = alloc_page(GFP_KERNEL
);
4996 /* for decoding across pages */
4997 res
.acl_scratch
= alloc_page(GFP_KERNEL
);
4998 if (!res
.acl_scratch
)
5001 args
.acl_len
= npages
* PAGE_SIZE
;
5003 dprintk("%s buf %p buflen %zu npages %d args.acl_len %zu\n",
5004 __func__
, buf
, buflen
, npages
, args
.acl_len
);
5005 ret
= nfs4_call_sync(NFS_SERVER(inode
)->client
, NFS_SERVER(inode
),
5006 &msg
, &args
.seq_args
, &res
.seq_res
, 0);
5010 /* Handle the case where the passed-in buffer is too short */
5011 if (res
.acl_flags
& NFS4_ACL_TRUNC
) {
5012 /* Did the user only issue a request for the acl length? */
5018 nfs4_write_cached_acl(inode
, pages
, res
.acl_data_offset
, res
.acl_len
);
5020 if (res
.acl_len
> buflen
) {
5024 _copy_from_pages(buf
, pages
, res
.acl_data_offset
, res
.acl_len
);
5029 for (i
= 0; i
< npages
; i
++)
5031 __free_page(pages
[i
]);
5032 if (res
.acl_scratch
)
5033 __free_page(res
.acl_scratch
);
5037 static ssize_t
nfs4_get_acl_uncached(struct inode
*inode
, void *buf
, size_t buflen
)
5039 struct nfs4_exception exception
= { };
5042 ret
= __nfs4_get_acl_uncached(inode
, buf
, buflen
);
5043 trace_nfs4_get_acl(inode
, ret
);
5046 ret
= nfs4_handle_exception(NFS_SERVER(inode
), ret
, &exception
);
5047 } while (exception
.retry
);
5051 static ssize_t
nfs4_proc_get_acl(struct inode
*inode
, void *buf
, size_t buflen
)
5053 struct nfs_server
*server
= NFS_SERVER(inode
);
5056 if (!nfs4_server_supports_acls(server
))
5058 ret
= nfs_revalidate_inode(server
, inode
);
5061 if (NFS_I(inode
)->cache_validity
& NFS_INO_INVALID_ACL
)
5062 nfs_zap_acl_cache(inode
);
5063 ret
= nfs4_read_cached_acl(inode
, buf
, buflen
);
5065 /* -ENOENT is returned if there is no ACL or if there is an ACL
5066 * but no cached acl data, just the acl length */
5068 return nfs4_get_acl_uncached(inode
, buf
, buflen
);
5071 static int __nfs4_proc_set_acl(struct inode
*inode
, const void *buf
, size_t buflen
)
5073 struct nfs_server
*server
= NFS_SERVER(inode
);
5074 struct page
*pages
[NFS4ACL_MAXPAGES
];
5075 struct nfs_setaclargs arg
= {
5076 .fh
= NFS_FH(inode
),
5080 struct nfs_setaclres res
;
5081 struct rpc_message msg
= {
5082 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETACL
],
5086 unsigned int npages
= DIV_ROUND_UP(buflen
, PAGE_SIZE
);
5089 if (!nfs4_server_supports_acls(server
))
5091 if (npages
> ARRAY_SIZE(pages
))
5093 i
= buf_to_pages_noslab(buf
, buflen
, arg
.acl_pages
);
5096 nfs4_inode_return_delegation(inode
);
5097 ret
= nfs4_call_sync(server
->client
, server
, &msg
, &arg
.seq_args
, &res
.seq_res
, 1);
5100 * Free each page after tx, so the only ref left is
5101 * held by the network stack
5104 put_page(pages
[i
-1]);
5107 * Acl update can result in inode attribute update.
5108 * so mark the attribute cache invalid.
5110 spin_lock(&inode
->i_lock
);
5111 NFS_I(inode
)->cache_validity
|= NFS_INO_INVALID_ATTR
;
5112 spin_unlock(&inode
->i_lock
);
5113 nfs_access_zap_cache(inode
);
5114 nfs_zap_acl_cache(inode
);
5118 static int nfs4_proc_set_acl(struct inode
*inode
, const void *buf
, size_t buflen
)
5120 struct nfs4_exception exception
= { };
5123 err
= __nfs4_proc_set_acl(inode
, buf
, buflen
);
5124 trace_nfs4_set_acl(inode
, err
);
5125 err
= nfs4_handle_exception(NFS_SERVER(inode
), err
,
5127 } while (exception
.retry
);
5131 #ifdef CONFIG_NFS_V4_SECURITY_LABEL
5132 static int _nfs4_get_security_label(struct inode
*inode
, void *buf
,
5135 struct nfs_server
*server
= NFS_SERVER(inode
);
5136 struct nfs_fattr fattr
;
5137 struct nfs4_label label
= {0, 0, buflen
, buf
};
5139 u32 bitmask
[3] = { 0, 0, FATTR4_WORD2_SECURITY_LABEL
};
5140 struct nfs4_getattr_arg arg
= {
5141 .fh
= NFS_FH(inode
),
5144 struct nfs4_getattr_res res
= {
5149 struct rpc_message msg
= {
5150 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GETATTR
],
5156 nfs_fattr_init(&fattr
);
5158 ret
= nfs4_call_sync(server
->client
, server
, &msg
, &arg
.seq_args
, &res
.seq_res
, 0);
5161 if (!(fattr
.valid
& NFS_ATTR_FATTR_V4_SECURITY_LABEL
))
5163 if (buflen
< label
.len
)
5168 static int nfs4_get_security_label(struct inode
*inode
, void *buf
,
5171 struct nfs4_exception exception
= { };
5174 if (!nfs_server_capable(inode
, NFS_CAP_SECURITY_LABEL
))
5178 err
= _nfs4_get_security_label(inode
, buf
, buflen
);
5179 trace_nfs4_get_security_label(inode
, err
);
5180 err
= nfs4_handle_exception(NFS_SERVER(inode
), err
,
5182 } while (exception
.retry
);
5186 static int _nfs4_do_set_security_label(struct inode
*inode
,
5187 struct nfs4_label
*ilabel
,
5188 struct nfs_fattr
*fattr
,
5189 struct nfs4_label
*olabel
)
5192 struct iattr sattr
= {0};
5193 struct nfs_server
*server
= NFS_SERVER(inode
);
5194 const u32 bitmask
[3] = { 0, 0, FATTR4_WORD2_SECURITY_LABEL
};
5195 struct nfs_setattrargs arg
= {
5196 .fh
= NFS_FH(inode
),
5202 struct nfs_setattrres res
= {
5207 struct rpc_message msg
= {
5208 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETATTR
],
5214 nfs4_stateid_copy(&arg
.stateid
, &zero_stateid
);
5216 status
= nfs4_call_sync(server
->client
, server
, &msg
, &arg
.seq_args
, &res
.seq_res
, 1);
5218 dprintk("%s failed: %d\n", __func__
, status
);
5223 static int nfs4_do_set_security_label(struct inode
*inode
,
5224 struct nfs4_label
*ilabel
,
5225 struct nfs_fattr
*fattr
,
5226 struct nfs4_label
*olabel
)
5228 struct nfs4_exception exception
= { };
5232 err
= _nfs4_do_set_security_label(inode
, ilabel
,
5234 trace_nfs4_set_security_label(inode
, err
);
5235 err
= nfs4_handle_exception(NFS_SERVER(inode
), err
,
5237 } while (exception
.retry
);
5242 nfs4_set_security_label(struct inode
*inode
, const void *buf
, size_t buflen
)
5244 struct nfs4_label ilabel
, *olabel
= NULL
;
5245 struct nfs_fattr fattr
;
5246 struct rpc_cred
*cred
;
5249 if (!nfs_server_capable(inode
, NFS_CAP_SECURITY_LABEL
))
5252 nfs_fattr_init(&fattr
);
5256 ilabel
.label
= (char *)buf
;
5257 ilabel
.len
= buflen
;
5259 cred
= rpc_lookup_cred();
5261 return PTR_ERR(cred
);
5263 olabel
= nfs4_label_alloc(NFS_SERVER(inode
), GFP_KERNEL
);
5264 if (IS_ERR(olabel
)) {
5265 status
= -PTR_ERR(olabel
);
5269 status
= nfs4_do_set_security_label(inode
, &ilabel
, &fattr
, olabel
);
5271 nfs_setsecurity(inode
, &fattr
, olabel
);
5273 nfs4_label_free(olabel
);
5278 #endif /* CONFIG_NFS_V4_SECURITY_LABEL */
5281 static void nfs4_init_boot_verifier(const struct nfs_client
*clp
,
5282 nfs4_verifier
*bootverf
)
5286 if (test_bit(NFS4CLNT_PURGE_STATE
, &clp
->cl_state
)) {
5287 /* An impossible timestamp guarantees this value
5288 * will never match a generated boot time. */
5289 verf
[0] = cpu_to_be32(U32_MAX
);
5290 verf
[1] = cpu_to_be32(U32_MAX
);
5292 struct nfs_net
*nn
= net_generic(clp
->cl_net
, nfs_net_id
);
5293 u64 ns
= ktime_to_ns(nn
->boot_time
);
5295 verf
[0] = cpu_to_be32(ns
>> 32);
5296 verf
[1] = cpu_to_be32(ns
);
5298 memcpy(bootverf
->data
, verf
, sizeof(bootverf
->data
));
5302 nfs4_init_nonuniform_client_string(struct nfs_client
*clp
)
5307 if (clp
->cl_owner_id
!= NULL
)
5311 len
= 14 + strlen(clp
->cl_ipaddr
) + 1 +
5312 strlen(rpc_peeraddr2str(clp
->cl_rpcclient
, RPC_DISPLAY_ADDR
)) +
5314 strlen(rpc_peeraddr2str(clp
->cl_rpcclient
, RPC_DISPLAY_PROTO
)) +
5318 if (len
> NFS4_OPAQUE_LIMIT
+ 1)
5322 * Since this string is allocated at mount time, and held until the
5323 * nfs_client is destroyed, we can use GFP_KERNEL here w/o worrying
5324 * about a memory-reclaim deadlock.
5326 str
= kmalloc(len
, GFP_KERNEL
);
5331 scnprintf(str
, len
, "Linux NFSv4.0 %s/%s %s",
5333 rpc_peeraddr2str(clp
->cl_rpcclient
, RPC_DISPLAY_ADDR
),
5334 rpc_peeraddr2str(clp
->cl_rpcclient
, RPC_DISPLAY_PROTO
));
5337 clp
->cl_owner_id
= str
;
5342 nfs4_init_uniquifier_client_string(struct nfs_client
*clp
)
5347 len
= 10 + 10 + 1 + 10 + 1 +
5348 strlen(nfs4_client_id_uniquifier
) + 1 +
5349 strlen(clp
->cl_rpcclient
->cl_nodename
) + 1;
5351 if (len
> NFS4_OPAQUE_LIMIT
+ 1)
5355 * Since this string is allocated at mount time, and held until the
5356 * nfs_client is destroyed, we can use GFP_KERNEL here w/o worrying
5357 * about a memory-reclaim deadlock.
5359 str
= kmalloc(len
, GFP_KERNEL
);
5363 scnprintf(str
, len
, "Linux NFSv%u.%u %s/%s",
5364 clp
->rpc_ops
->version
, clp
->cl_minorversion
,
5365 nfs4_client_id_uniquifier
,
5366 clp
->cl_rpcclient
->cl_nodename
);
5367 clp
->cl_owner_id
= str
;
5372 nfs4_init_uniform_client_string(struct nfs_client
*clp
)
5377 if (clp
->cl_owner_id
!= NULL
)
5380 if (nfs4_client_id_uniquifier
[0] != '\0')
5381 return nfs4_init_uniquifier_client_string(clp
);
5383 len
= 10 + 10 + 1 + 10 + 1 +
5384 strlen(clp
->cl_rpcclient
->cl_nodename
) + 1;
5386 if (len
> NFS4_OPAQUE_LIMIT
+ 1)
5390 * Since this string is allocated at mount time, and held until the
5391 * nfs_client is destroyed, we can use GFP_KERNEL here w/o worrying
5392 * about a memory-reclaim deadlock.
5394 str
= kmalloc(len
, GFP_KERNEL
);
5398 scnprintf(str
, len
, "Linux NFSv%u.%u %s",
5399 clp
->rpc_ops
->version
, clp
->cl_minorversion
,
5400 clp
->cl_rpcclient
->cl_nodename
);
5401 clp
->cl_owner_id
= str
;
5406 * nfs4_callback_up_net() starts only "tcp" and "tcp6" callback
5407 * services. Advertise one based on the address family of the
5411 nfs4_init_callback_netid(const struct nfs_client
*clp
, char *buf
, size_t len
)
5413 if (strchr(clp
->cl_ipaddr
, ':') != NULL
)
5414 return scnprintf(buf
, len
, "tcp6");
5416 return scnprintf(buf
, len
, "tcp");
5419 static void nfs4_setclientid_done(struct rpc_task
*task
, void *calldata
)
5421 struct nfs4_setclientid
*sc
= calldata
;
5423 if (task
->tk_status
== 0)
5424 sc
->sc_cred
= get_rpccred(task
->tk_rqstp
->rq_cred
);
5427 static const struct rpc_call_ops nfs4_setclientid_ops
= {
5428 .rpc_call_done
= nfs4_setclientid_done
,
5432 * nfs4_proc_setclientid - Negotiate client ID
5433 * @clp: state data structure
5434 * @program: RPC program for NFSv4 callback service
5435 * @port: IP port number for NFS4 callback service
5436 * @cred: RPC credential to use for this call
5437 * @res: where to place the result
5439 * Returns zero, a negative errno, or a negative NFS4ERR status code.
5441 int nfs4_proc_setclientid(struct nfs_client
*clp
, u32 program
,
5442 unsigned short port
, struct rpc_cred
*cred
,
5443 struct nfs4_setclientid_res
*res
)
5445 nfs4_verifier sc_verifier
;
5446 struct nfs4_setclientid setclientid
= {
5447 .sc_verifier
= &sc_verifier
,
5451 struct rpc_message msg
= {
5452 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETCLIENTID
],
5453 .rpc_argp
= &setclientid
,
5457 struct rpc_task
*task
;
5458 struct rpc_task_setup task_setup_data
= {
5459 .rpc_client
= clp
->cl_rpcclient
,
5460 .rpc_message
= &msg
,
5461 .callback_ops
= &nfs4_setclientid_ops
,
5462 .callback_data
= &setclientid
,
5463 .flags
= RPC_TASK_TIMEOUT
,
5467 /* nfs_client_id4 */
5468 nfs4_init_boot_verifier(clp
, &sc_verifier
);
5470 if (test_bit(NFS_CS_MIGRATION
, &clp
->cl_flags
))
5471 status
= nfs4_init_uniform_client_string(clp
);
5473 status
= nfs4_init_nonuniform_client_string(clp
);
5479 setclientid
.sc_netid_len
=
5480 nfs4_init_callback_netid(clp
,
5481 setclientid
.sc_netid
,
5482 sizeof(setclientid
.sc_netid
));
5483 setclientid
.sc_uaddr_len
= scnprintf(setclientid
.sc_uaddr
,
5484 sizeof(setclientid
.sc_uaddr
), "%s.%u.%u",
5485 clp
->cl_ipaddr
, port
>> 8, port
& 255);
5487 dprintk("NFS call setclientid auth=%s, '%s'\n",
5488 clp
->cl_rpcclient
->cl_auth
->au_ops
->au_name
,
5490 task
= rpc_run_task(&task_setup_data
);
5492 status
= PTR_ERR(task
);
5495 status
= task
->tk_status
;
5496 if (setclientid
.sc_cred
) {
5497 clp
->cl_acceptor
= rpcauth_stringify_acceptor(setclientid
.sc_cred
);
5498 put_rpccred(setclientid
.sc_cred
);
5502 trace_nfs4_setclientid(clp
, status
);
5503 dprintk("NFS reply setclientid: %d\n", status
);
5508 * nfs4_proc_setclientid_confirm - Confirm client ID
5509 * @clp: state data structure
5510 * @res: result of a previous SETCLIENTID
5511 * @cred: RPC credential to use for this call
5513 * Returns zero, a negative errno, or a negative NFS4ERR status code.
5515 int nfs4_proc_setclientid_confirm(struct nfs_client
*clp
,
5516 struct nfs4_setclientid_res
*arg
,
5517 struct rpc_cred
*cred
)
5519 struct rpc_message msg
= {
5520 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETCLIENTID_CONFIRM
],
5526 dprintk("NFS call setclientid_confirm auth=%s, (client ID %llx)\n",
5527 clp
->cl_rpcclient
->cl_auth
->au_ops
->au_name
,
5529 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
5530 trace_nfs4_setclientid_confirm(clp
, status
);
5531 dprintk("NFS reply setclientid_confirm: %d\n", status
);
5535 struct nfs4_delegreturndata
{
5536 struct nfs4_delegreturnargs args
;
5537 struct nfs4_delegreturnres res
;
5539 nfs4_stateid stateid
;
5540 unsigned long timestamp
;
5542 struct nfs4_layoutreturn_args arg
;
5543 struct nfs4_layoutreturn_res res
;
5544 struct nfs4_xdr_opaque_data ld_private
;
5548 struct nfs_fattr fattr
;
5550 struct inode
*inode
;
5553 static void nfs4_delegreturn_done(struct rpc_task
*task
, void *calldata
)
5555 struct nfs4_delegreturndata
*data
= calldata
;
5557 if (!nfs4_sequence_done(task
, &data
->res
.seq_res
))
5560 trace_nfs4_delegreturn_exit(&data
->args
, &data
->res
, task
->tk_status
);
5562 /* Handle Layoutreturn errors */
5563 if (data
->args
.lr_args
&& task
->tk_status
!= 0) {
5564 switch(data
->res
.lr_ret
) {
5566 data
->res
.lr_ret
= -NFS4ERR_NOMATCHING_LAYOUT
;
5569 data
->args
.lr_args
= NULL
;
5570 data
->res
.lr_res
= NULL
;
5572 case -NFS4ERR_ADMIN_REVOKED
:
5573 case -NFS4ERR_DELEG_REVOKED
:
5574 case -NFS4ERR_EXPIRED
:
5575 case -NFS4ERR_BAD_STATEID
:
5576 case -NFS4ERR_OLD_STATEID
:
5577 case -NFS4ERR_UNKNOWN_LAYOUTTYPE
:
5578 case -NFS4ERR_WRONG_CRED
:
5579 data
->args
.lr_args
= NULL
;
5580 data
->res
.lr_res
= NULL
;
5581 data
->res
.lr_ret
= 0;
5582 rpc_restart_call_prepare(task
);
5587 switch (task
->tk_status
) {
5589 renew_lease(data
->res
.server
, data
->timestamp
);
5591 case -NFS4ERR_ADMIN_REVOKED
:
5592 case -NFS4ERR_DELEG_REVOKED
:
5593 case -NFS4ERR_EXPIRED
:
5594 nfs4_free_revoked_stateid(data
->res
.server
,
5596 task
->tk_msg
.rpc_cred
);
5597 case -NFS4ERR_BAD_STATEID
:
5598 case -NFS4ERR_OLD_STATEID
:
5599 case -NFS4ERR_STALE_STATEID
:
5600 task
->tk_status
= 0;
5602 case -NFS4ERR_ACCESS
:
5603 if (data
->args
.bitmask
) {
5604 data
->args
.bitmask
= NULL
;
5605 data
->res
.fattr
= NULL
;
5606 task
->tk_status
= 0;
5607 rpc_restart_call_prepare(task
);
5611 if (nfs4_async_handle_error(task
, data
->res
.server
,
5612 NULL
, NULL
) == -EAGAIN
) {
5613 rpc_restart_call_prepare(task
);
5617 data
->rpc_status
= task
->tk_status
;
5620 static void nfs4_delegreturn_release(void *calldata
)
5622 struct nfs4_delegreturndata
*data
= calldata
;
5623 struct inode
*inode
= data
->inode
;
5627 pnfs_roc_release(&data
->lr
.arg
, &data
->lr
.res
,
5629 nfs_post_op_update_inode_force_wcc(inode
, &data
->fattr
);
5630 nfs_iput_and_deactive(inode
);
5635 static void nfs4_delegreturn_prepare(struct rpc_task
*task
, void *data
)
5637 struct nfs4_delegreturndata
*d_data
;
5639 d_data
= (struct nfs4_delegreturndata
*)data
;
5641 if (!d_data
->lr
.roc
&& nfs4_wait_on_layoutreturn(d_data
->inode
, task
))
5644 nfs4_setup_sequence(d_data
->res
.server
->nfs_client
,
5645 &d_data
->args
.seq_args
,
5646 &d_data
->res
.seq_res
,
5650 static const struct rpc_call_ops nfs4_delegreturn_ops
= {
5651 .rpc_call_prepare
= nfs4_delegreturn_prepare
,
5652 .rpc_call_done
= nfs4_delegreturn_done
,
5653 .rpc_release
= nfs4_delegreturn_release
,
5656 static int _nfs4_proc_delegreturn(struct inode
*inode
, struct rpc_cred
*cred
, const nfs4_stateid
*stateid
, int issync
)
5658 struct nfs4_delegreturndata
*data
;
5659 struct nfs_server
*server
= NFS_SERVER(inode
);
5660 struct rpc_task
*task
;
5661 struct rpc_message msg
= {
5662 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_DELEGRETURN
],
5665 struct rpc_task_setup task_setup_data
= {
5666 .rpc_client
= server
->client
,
5667 .rpc_message
= &msg
,
5668 .callback_ops
= &nfs4_delegreturn_ops
,
5669 .flags
= RPC_TASK_ASYNC
,
5673 data
= kzalloc(sizeof(*data
), GFP_NOFS
);
5676 nfs4_init_sequence(&data
->args
.seq_args
, &data
->res
.seq_res
, 1);
5678 nfs4_state_protect(server
->nfs_client
,
5679 NFS_SP4_MACH_CRED_CLEANUP
,
5680 &task_setup_data
.rpc_client
, &msg
);
5682 data
->args
.fhandle
= &data
->fh
;
5683 data
->args
.stateid
= &data
->stateid
;
5684 data
->args
.bitmask
= server
->cache_consistency_bitmask
;
5685 nfs_copy_fh(&data
->fh
, NFS_FH(inode
));
5686 nfs4_stateid_copy(&data
->stateid
, stateid
);
5687 data
->res
.fattr
= &data
->fattr
;
5688 data
->res
.server
= server
;
5689 data
->res
.lr_ret
= -NFS4ERR_NOMATCHING_LAYOUT
;
5690 data
->lr
.arg
.ld_private
= &data
->lr
.ld_private
;
5691 nfs_fattr_init(data
->res
.fattr
);
5692 data
->timestamp
= jiffies
;
5693 data
->rpc_status
= 0;
5694 data
->lr
.roc
= pnfs_roc(inode
, &data
->lr
.arg
, &data
->lr
.res
, cred
);
5695 data
->inode
= nfs_igrab_and_active(inode
);
5698 data
->args
.lr_args
= &data
->lr
.arg
;
5699 data
->res
.lr_res
= &data
->lr
.res
;
5701 } else if (data
->lr
.roc
) {
5702 pnfs_roc_release(&data
->lr
.arg
, &data
->lr
.res
, 0);
5703 data
->lr
.roc
= false;
5706 task_setup_data
.callback_data
= data
;
5707 msg
.rpc_argp
= &data
->args
;
5708 msg
.rpc_resp
= &data
->res
;
5709 task
= rpc_run_task(&task_setup_data
);
5711 return PTR_ERR(task
);
5714 status
= rpc_wait_for_completion_task(task
);
5717 status
= data
->rpc_status
;
5723 int nfs4_proc_delegreturn(struct inode
*inode
, struct rpc_cred
*cred
, const nfs4_stateid
*stateid
, int issync
)
5725 struct nfs_server
*server
= NFS_SERVER(inode
);
5726 struct nfs4_exception exception
= { };
5729 err
= _nfs4_proc_delegreturn(inode
, cred
, stateid
, issync
);
5730 trace_nfs4_delegreturn(inode
, stateid
, err
);
5732 case -NFS4ERR_STALE_STATEID
:
5733 case -NFS4ERR_EXPIRED
:
5737 err
= nfs4_handle_exception(server
, err
, &exception
);
5738 } while (exception
.retry
);
5742 static int _nfs4_proc_getlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
5744 struct inode
*inode
= state
->inode
;
5745 struct nfs_server
*server
= NFS_SERVER(inode
);
5746 struct nfs_client
*clp
= server
->nfs_client
;
5747 struct nfs_lockt_args arg
= {
5748 .fh
= NFS_FH(inode
),
5751 struct nfs_lockt_res res
= {
5754 struct rpc_message msg
= {
5755 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOCKT
],
5758 .rpc_cred
= state
->owner
->so_cred
,
5760 struct nfs4_lock_state
*lsp
;
5763 arg
.lock_owner
.clientid
= clp
->cl_clientid
;
5764 status
= nfs4_set_lock_state(state
, request
);
5767 lsp
= request
->fl_u
.nfs4_fl
.owner
;
5768 arg
.lock_owner
.id
= lsp
->ls_seqid
.owner_id
;
5769 arg
.lock_owner
.s_dev
= server
->s_dev
;
5770 status
= nfs4_call_sync(server
->client
, server
, &msg
, &arg
.seq_args
, &res
.seq_res
, 1);
5773 request
->fl_type
= F_UNLCK
;
5775 case -NFS4ERR_DENIED
:
5778 request
->fl_ops
->fl_release_private(request
);
5779 request
->fl_ops
= NULL
;
5784 static int nfs4_proc_getlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
5786 struct nfs4_exception exception
= { };
5790 err
= _nfs4_proc_getlk(state
, cmd
, request
);
5791 trace_nfs4_get_lock(request
, state
, cmd
, err
);
5792 err
= nfs4_handle_exception(NFS_SERVER(state
->inode
), err
,
5794 } while (exception
.retry
);
5798 struct nfs4_unlockdata
{
5799 struct nfs_locku_args arg
;
5800 struct nfs_locku_res res
;
5801 struct nfs4_lock_state
*lsp
;
5802 struct nfs_open_context
*ctx
;
5803 struct file_lock fl
;
5804 struct nfs_server
*server
;
5805 unsigned long timestamp
;
5808 static struct nfs4_unlockdata
*nfs4_alloc_unlockdata(struct file_lock
*fl
,
5809 struct nfs_open_context
*ctx
,
5810 struct nfs4_lock_state
*lsp
,
5811 struct nfs_seqid
*seqid
)
5813 struct nfs4_unlockdata
*p
;
5814 struct inode
*inode
= lsp
->ls_state
->inode
;
5816 p
= kzalloc(sizeof(*p
), GFP_NOFS
);
5819 p
->arg
.fh
= NFS_FH(inode
);
5821 p
->arg
.seqid
= seqid
;
5822 p
->res
.seqid
= seqid
;
5824 atomic_inc(&lsp
->ls_count
);
5825 /* Ensure we don't close file until we're done freeing locks! */
5826 p
->ctx
= get_nfs_open_context(ctx
);
5827 memcpy(&p
->fl
, fl
, sizeof(p
->fl
));
5828 p
->server
= NFS_SERVER(inode
);
5832 static void nfs4_locku_release_calldata(void *data
)
5834 struct nfs4_unlockdata
*calldata
= data
;
5835 nfs_free_seqid(calldata
->arg
.seqid
);
5836 nfs4_put_lock_state(calldata
->lsp
);
5837 put_nfs_open_context(calldata
->ctx
);
5841 static void nfs4_locku_done(struct rpc_task
*task
, void *data
)
5843 struct nfs4_unlockdata
*calldata
= data
;
5845 if (!nfs4_sequence_done(task
, &calldata
->res
.seq_res
))
5847 switch (task
->tk_status
) {
5849 renew_lease(calldata
->server
, calldata
->timestamp
);
5850 locks_lock_inode_wait(calldata
->lsp
->ls_state
->inode
, &calldata
->fl
);
5851 if (nfs4_update_lock_stateid(calldata
->lsp
,
5852 &calldata
->res
.stateid
))
5854 case -NFS4ERR_ADMIN_REVOKED
:
5855 case -NFS4ERR_EXPIRED
:
5856 nfs4_free_revoked_stateid(calldata
->server
,
5857 &calldata
->arg
.stateid
,
5858 task
->tk_msg
.rpc_cred
);
5859 case -NFS4ERR_BAD_STATEID
:
5860 case -NFS4ERR_OLD_STATEID
:
5861 case -NFS4ERR_STALE_STATEID
:
5862 if (!nfs4_stateid_match(&calldata
->arg
.stateid
,
5863 &calldata
->lsp
->ls_stateid
))
5864 rpc_restart_call_prepare(task
);
5867 if (nfs4_async_handle_error(task
, calldata
->server
,
5868 NULL
, NULL
) == -EAGAIN
)
5869 rpc_restart_call_prepare(task
);
5871 nfs_release_seqid(calldata
->arg
.seqid
);
5874 static void nfs4_locku_prepare(struct rpc_task
*task
, void *data
)
5876 struct nfs4_unlockdata
*calldata
= data
;
5878 if (nfs_wait_on_sequence(calldata
->arg
.seqid
, task
) != 0)
5880 nfs4_stateid_copy(&calldata
->arg
.stateid
, &calldata
->lsp
->ls_stateid
);
5881 if (test_bit(NFS_LOCK_INITIALIZED
, &calldata
->lsp
->ls_flags
) == 0) {
5882 /* Note: exit _without_ running nfs4_locku_done */
5885 calldata
->timestamp
= jiffies
;
5886 if (nfs4_setup_sequence(calldata
->server
->nfs_client
,
5887 &calldata
->arg
.seq_args
,
5888 &calldata
->res
.seq_res
,
5890 nfs_release_seqid(calldata
->arg
.seqid
);
5893 task
->tk_action
= NULL
;
5895 nfs4_sequence_done(task
, &calldata
->res
.seq_res
);
5898 static const struct rpc_call_ops nfs4_locku_ops
= {
5899 .rpc_call_prepare
= nfs4_locku_prepare
,
5900 .rpc_call_done
= nfs4_locku_done
,
5901 .rpc_release
= nfs4_locku_release_calldata
,
5904 static struct rpc_task
*nfs4_do_unlck(struct file_lock
*fl
,
5905 struct nfs_open_context
*ctx
,
5906 struct nfs4_lock_state
*lsp
,
5907 struct nfs_seqid
*seqid
)
5909 struct nfs4_unlockdata
*data
;
5910 struct rpc_message msg
= {
5911 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOCKU
],
5912 .rpc_cred
= ctx
->cred
,
5914 struct rpc_task_setup task_setup_data
= {
5915 .rpc_client
= NFS_CLIENT(lsp
->ls_state
->inode
),
5916 .rpc_message
= &msg
,
5917 .callback_ops
= &nfs4_locku_ops
,
5918 .workqueue
= nfsiod_workqueue
,
5919 .flags
= RPC_TASK_ASYNC
,
5922 nfs4_state_protect(NFS_SERVER(lsp
->ls_state
->inode
)->nfs_client
,
5923 NFS_SP4_MACH_CRED_CLEANUP
, &task_setup_data
.rpc_client
, &msg
);
5925 /* Ensure this is an unlock - when canceling a lock, the
5926 * canceled lock is passed in, and it won't be an unlock.
5928 fl
->fl_type
= F_UNLCK
;
5930 data
= nfs4_alloc_unlockdata(fl
, ctx
, lsp
, seqid
);
5932 nfs_free_seqid(seqid
);
5933 return ERR_PTR(-ENOMEM
);
5936 nfs4_init_sequence(&data
->arg
.seq_args
, &data
->res
.seq_res
, 1);
5937 msg
.rpc_argp
= &data
->arg
;
5938 msg
.rpc_resp
= &data
->res
;
5939 task_setup_data
.callback_data
= data
;
5940 return rpc_run_task(&task_setup_data
);
5943 static int nfs4_proc_unlck(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
5945 struct inode
*inode
= state
->inode
;
5946 struct nfs4_state_owner
*sp
= state
->owner
;
5947 struct nfs_inode
*nfsi
= NFS_I(inode
);
5948 struct nfs_seqid
*seqid
;
5949 struct nfs4_lock_state
*lsp
;
5950 struct rpc_task
*task
;
5951 struct nfs_seqid
*(*alloc_seqid
)(struct nfs_seqid_counter
*, gfp_t
);
5953 unsigned char fl_flags
= request
->fl_flags
;
5955 status
= nfs4_set_lock_state(state
, request
);
5956 /* Unlock _before_ we do the RPC call */
5957 request
->fl_flags
|= FL_EXISTS
;
5958 /* Exclude nfs_delegation_claim_locks() */
5959 mutex_lock(&sp
->so_delegreturn_mutex
);
5960 /* Exclude nfs4_reclaim_open_stateid() - note nesting! */
5961 down_read(&nfsi
->rwsem
);
5962 if (locks_lock_inode_wait(inode
, request
) == -ENOENT
) {
5963 up_read(&nfsi
->rwsem
);
5964 mutex_unlock(&sp
->so_delegreturn_mutex
);
5967 up_read(&nfsi
->rwsem
);
5968 mutex_unlock(&sp
->so_delegreturn_mutex
);
5971 /* Is this a delegated lock? */
5972 lsp
= request
->fl_u
.nfs4_fl
.owner
;
5973 if (test_bit(NFS_LOCK_INITIALIZED
, &lsp
->ls_flags
) == 0)
5975 alloc_seqid
= NFS_SERVER(inode
)->nfs_client
->cl_mvops
->alloc_seqid
;
5976 seqid
= alloc_seqid(&lsp
->ls_seqid
, GFP_KERNEL
);
5980 task
= nfs4_do_unlck(request
, nfs_file_open_context(request
->fl_file
), lsp
, seqid
);
5981 status
= PTR_ERR(task
);
5984 status
= rpc_wait_for_completion_task(task
);
5987 request
->fl_flags
= fl_flags
;
5988 trace_nfs4_unlock(request
, state
, F_SETLK
, status
);
5992 struct nfs4_lockdata
{
5993 struct nfs_lock_args arg
;
5994 struct nfs_lock_res res
;
5995 struct nfs4_lock_state
*lsp
;
5996 struct nfs_open_context
*ctx
;
5997 struct file_lock fl
;
5998 unsigned long timestamp
;
6001 struct nfs_server
*server
;
6004 static struct nfs4_lockdata
*nfs4_alloc_lockdata(struct file_lock
*fl
,
6005 struct nfs_open_context
*ctx
, struct nfs4_lock_state
*lsp
,
6008 struct nfs4_lockdata
*p
;
6009 struct inode
*inode
= lsp
->ls_state
->inode
;
6010 struct nfs_server
*server
= NFS_SERVER(inode
);
6011 struct nfs_seqid
*(*alloc_seqid
)(struct nfs_seqid_counter
*, gfp_t
);
6013 p
= kzalloc(sizeof(*p
), gfp_mask
);
6017 p
->arg
.fh
= NFS_FH(inode
);
6019 p
->arg
.open_seqid
= nfs_alloc_seqid(&lsp
->ls_state
->owner
->so_seqid
, gfp_mask
);
6020 if (IS_ERR(p
->arg
.open_seqid
))
6022 alloc_seqid
= server
->nfs_client
->cl_mvops
->alloc_seqid
;
6023 p
->arg
.lock_seqid
= alloc_seqid(&lsp
->ls_seqid
, gfp_mask
);
6024 if (IS_ERR(p
->arg
.lock_seqid
))
6025 goto out_free_seqid
;
6026 p
->arg
.lock_owner
.clientid
= server
->nfs_client
->cl_clientid
;
6027 p
->arg
.lock_owner
.id
= lsp
->ls_seqid
.owner_id
;
6028 p
->arg
.lock_owner
.s_dev
= server
->s_dev
;
6029 p
->res
.lock_seqid
= p
->arg
.lock_seqid
;
6032 atomic_inc(&lsp
->ls_count
);
6033 p
->ctx
= get_nfs_open_context(ctx
);
6034 memcpy(&p
->fl
, fl
, sizeof(p
->fl
));
6037 nfs_free_seqid(p
->arg
.open_seqid
);
6043 static void nfs4_lock_prepare(struct rpc_task
*task
, void *calldata
)
6045 struct nfs4_lockdata
*data
= calldata
;
6046 struct nfs4_state
*state
= data
->lsp
->ls_state
;
6048 dprintk("%s: begin!\n", __func__
);
6049 if (nfs_wait_on_sequence(data
->arg
.lock_seqid
, task
) != 0)
6051 /* Do we need to do an open_to_lock_owner? */
6052 if (!test_bit(NFS_LOCK_INITIALIZED
, &data
->lsp
->ls_flags
)) {
6053 if (nfs_wait_on_sequence(data
->arg
.open_seqid
, task
) != 0) {
6054 goto out_release_lock_seqid
;
6056 nfs4_stateid_copy(&data
->arg
.open_stateid
,
6057 &state
->open_stateid
);
6058 data
->arg
.new_lock_owner
= 1;
6059 data
->res
.open_seqid
= data
->arg
.open_seqid
;
6061 data
->arg
.new_lock_owner
= 0;
6062 nfs4_stateid_copy(&data
->arg
.lock_stateid
,
6063 &data
->lsp
->ls_stateid
);
6065 if (!nfs4_valid_open_stateid(state
)) {
6066 data
->rpc_status
= -EBADF
;
6067 task
->tk_action
= NULL
;
6068 goto out_release_open_seqid
;
6070 data
->timestamp
= jiffies
;
6071 if (nfs4_setup_sequence(data
->server
->nfs_client
,
6072 &data
->arg
.seq_args
,
6076 out_release_open_seqid
:
6077 nfs_release_seqid(data
->arg
.open_seqid
);
6078 out_release_lock_seqid
:
6079 nfs_release_seqid(data
->arg
.lock_seqid
);
6081 nfs4_sequence_done(task
, &data
->res
.seq_res
);
6082 dprintk("%s: done!, ret = %d\n", __func__
, data
->rpc_status
);
6085 static void nfs4_lock_done(struct rpc_task
*task
, void *calldata
)
6087 struct nfs4_lockdata
*data
= calldata
;
6088 struct nfs4_lock_state
*lsp
= data
->lsp
;
6090 dprintk("%s: begin!\n", __func__
);
6092 if (!nfs4_sequence_done(task
, &data
->res
.seq_res
))
6095 data
->rpc_status
= task
->tk_status
;
6096 switch (task
->tk_status
) {
6098 renew_lease(NFS_SERVER(d_inode(data
->ctx
->dentry
)),
6100 if (data
->arg
.new_lock
) {
6101 data
->fl
.fl_flags
&= ~(FL_SLEEP
| FL_ACCESS
);
6102 if (locks_lock_inode_wait(lsp
->ls_state
->inode
, &data
->fl
) < 0) {
6103 rpc_restart_call_prepare(task
);
6107 if (data
->arg
.new_lock_owner
!= 0) {
6108 nfs_confirm_seqid(&lsp
->ls_seqid
, 0);
6109 nfs4_stateid_copy(&lsp
->ls_stateid
, &data
->res
.stateid
);
6110 set_bit(NFS_LOCK_INITIALIZED
, &lsp
->ls_flags
);
6111 } else if (!nfs4_update_lock_stateid(lsp
, &data
->res
.stateid
))
6112 rpc_restart_call_prepare(task
);
6114 case -NFS4ERR_BAD_STATEID
:
6115 case -NFS4ERR_OLD_STATEID
:
6116 case -NFS4ERR_STALE_STATEID
:
6117 case -NFS4ERR_EXPIRED
:
6118 if (data
->arg
.new_lock_owner
!= 0) {
6119 if (!nfs4_stateid_match(&data
->arg
.open_stateid
,
6120 &lsp
->ls_state
->open_stateid
))
6121 rpc_restart_call_prepare(task
);
6122 } else if (!nfs4_stateid_match(&data
->arg
.lock_stateid
,
6124 rpc_restart_call_prepare(task
);
6126 dprintk("%s: done, ret = %d!\n", __func__
, data
->rpc_status
);
6129 static void nfs4_lock_release(void *calldata
)
6131 struct nfs4_lockdata
*data
= calldata
;
6133 dprintk("%s: begin!\n", __func__
);
6134 nfs_free_seqid(data
->arg
.open_seqid
);
6135 if (data
->cancelled
!= 0) {
6136 struct rpc_task
*task
;
6137 task
= nfs4_do_unlck(&data
->fl
, data
->ctx
, data
->lsp
,
6138 data
->arg
.lock_seqid
);
6140 rpc_put_task_async(task
);
6141 dprintk("%s: cancelling lock!\n", __func__
);
6143 nfs_free_seqid(data
->arg
.lock_seqid
);
6144 nfs4_put_lock_state(data
->lsp
);
6145 put_nfs_open_context(data
->ctx
);
6147 dprintk("%s: done!\n", __func__
);
6150 static const struct rpc_call_ops nfs4_lock_ops
= {
6151 .rpc_call_prepare
= nfs4_lock_prepare
,
6152 .rpc_call_done
= nfs4_lock_done
,
6153 .rpc_release
= nfs4_lock_release
,
6156 static void nfs4_handle_setlk_error(struct nfs_server
*server
, struct nfs4_lock_state
*lsp
, int new_lock_owner
, int error
)
6159 case -NFS4ERR_ADMIN_REVOKED
:
6160 case -NFS4ERR_EXPIRED
:
6161 case -NFS4ERR_BAD_STATEID
:
6162 lsp
->ls_seqid
.flags
&= ~NFS_SEQID_CONFIRMED
;
6163 if (new_lock_owner
!= 0 ||
6164 test_bit(NFS_LOCK_INITIALIZED
, &lsp
->ls_flags
) != 0)
6165 nfs4_schedule_stateid_recovery(server
, lsp
->ls_state
);
6167 case -NFS4ERR_STALE_STATEID
:
6168 lsp
->ls_seqid
.flags
&= ~NFS_SEQID_CONFIRMED
;
6169 nfs4_schedule_lease_recovery(server
->nfs_client
);
6173 static int _nfs4_do_setlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*fl
, int recovery_type
)
6175 struct nfs4_lockdata
*data
;
6176 struct rpc_task
*task
;
6177 struct rpc_message msg
= {
6178 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOCK
],
6179 .rpc_cred
= state
->owner
->so_cred
,
6181 struct rpc_task_setup task_setup_data
= {
6182 .rpc_client
= NFS_CLIENT(state
->inode
),
6183 .rpc_message
= &msg
,
6184 .callback_ops
= &nfs4_lock_ops
,
6185 .workqueue
= nfsiod_workqueue
,
6186 .flags
= RPC_TASK_ASYNC
,
6190 dprintk("%s: begin!\n", __func__
);
6191 data
= nfs4_alloc_lockdata(fl
, nfs_file_open_context(fl
->fl_file
),
6192 fl
->fl_u
.nfs4_fl
.owner
,
6193 recovery_type
== NFS_LOCK_NEW
? GFP_KERNEL
: GFP_NOFS
);
6197 data
->arg
.block
= 1;
6198 nfs4_init_sequence(&data
->arg
.seq_args
, &data
->res
.seq_res
, 1);
6199 msg
.rpc_argp
= &data
->arg
;
6200 msg
.rpc_resp
= &data
->res
;
6201 task_setup_data
.callback_data
= data
;
6202 if (recovery_type
> NFS_LOCK_NEW
) {
6203 if (recovery_type
== NFS_LOCK_RECLAIM
)
6204 data
->arg
.reclaim
= NFS_LOCK_RECLAIM
;
6205 nfs4_set_sequence_privileged(&data
->arg
.seq_args
);
6207 data
->arg
.new_lock
= 1;
6208 task
= rpc_run_task(&task_setup_data
);
6210 return PTR_ERR(task
);
6211 ret
= rpc_wait_for_completion_task(task
);
6213 ret
= data
->rpc_status
;
6215 nfs4_handle_setlk_error(data
->server
, data
->lsp
,
6216 data
->arg
.new_lock_owner
, ret
);
6218 data
->cancelled
= 1;
6220 dprintk("%s: done, ret = %d!\n", __func__
, ret
);
6221 trace_nfs4_set_lock(fl
, state
, &data
->res
.stateid
, cmd
, ret
);
6225 static int nfs4_lock_reclaim(struct nfs4_state
*state
, struct file_lock
*request
)
6227 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
6228 struct nfs4_exception exception
= {
6229 .inode
= state
->inode
,
6234 /* Cache the lock if possible... */
6235 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) != 0)
6237 err
= _nfs4_do_setlk(state
, F_SETLK
, request
, NFS_LOCK_RECLAIM
);
6238 if (err
!= -NFS4ERR_DELAY
)
6240 nfs4_handle_exception(server
, err
, &exception
);
6241 } while (exception
.retry
);
6245 static int nfs4_lock_expired(struct nfs4_state
*state
, struct file_lock
*request
)
6247 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
6248 struct nfs4_exception exception
= {
6249 .inode
= state
->inode
,
6253 err
= nfs4_set_lock_state(state
, request
);
6256 if (!recover_lost_locks
) {
6257 set_bit(NFS_LOCK_LOST
, &request
->fl_u
.nfs4_fl
.owner
->ls_flags
);
6261 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) != 0)
6263 err
= _nfs4_do_setlk(state
, F_SETLK
, request
, NFS_LOCK_EXPIRED
);
6267 case -NFS4ERR_GRACE
:
6268 case -NFS4ERR_DELAY
:
6269 nfs4_handle_exception(server
, err
, &exception
);
6272 } while (exception
.retry
);
6277 #if defined(CONFIG_NFS_V4_1)
6278 static int nfs41_lock_expired(struct nfs4_state
*state
, struct file_lock
*request
)
6280 struct nfs4_lock_state
*lsp
;
6283 status
= nfs4_set_lock_state(state
, request
);
6286 lsp
= request
->fl_u
.nfs4_fl
.owner
;
6287 if (test_bit(NFS_LOCK_INITIALIZED
, &lsp
->ls_flags
) ||
6288 test_bit(NFS_LOCK_LOST
, &lsp
->ls_flags
))
6290 status
= nfs4_lock_expired(state
, request
);
6295 static int _nfs4_proc_setlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
6297 struct nfs_inode
*nfsi
= NFS_I(state
->inode
);
6298 struct nfs4_state_owner
*sp
= state
->owner
;
6299 unsigned char fl_flags
= request
->fl_flags
;
6302 request
->fl_flags
|= FL_ACCESS
;
6303 status
= locks_lock_inode_wait(state
->inode
, request
);
6306 mutex_lock(&sp
->so_delegreturn_mutex
);
6307 down_read(&nfsi
->rwsem
);
6308 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
)) {
6309 /* Yes: cache locks! */
6310 /* ...but avoid races with delegation recall... */
6311 request
->fl_flags
= fl_flags
& ~FL_SLEEP
;
6312 status
= locks_lock_inode_wait(state
->inode
, request
);
6313 up_read(&nfsi
->rwsem
);
6314 mutex_unlock(&sp
->so_delegreturn_mutex
);
6317 up_read(&nfsi
->rwsem
);
6318 mutex_unlock(&sp
->so_delegreturn_mutex
);
6319 status
= _nfs4_do_setlk(state
, cmd
, request
, NFS_LOCK_NEW
);
6321 request
->fl_flags
= fl_flags
;
6325 static int nfs4_proc_setlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
6327 struct nfs4_exception exception
= {
6329 .inode
= state
->inode
,
6334 err
= _nfs4_proc_setlk(state
, cmd
, request
);
6335 if (err
== -NFS4ERR_DENIED
)
6337 err
= nfs4_handle_exception(NFS_SERVER(state
->inode
),
6339 } while (exception
.retry
);
6343 #define NFS4_LOCK_MINTIMEOUT (1 * HZ)
6344 #define NFS4_LOCK_MAXTIMEOUT (30 * HZ)
6347 nfs4_retry_setlk_simple(struct nfs4_state
*state
, int cmd
,
6348 struct file_lock
*request
)
6350 int status
= -ERESTARTSYS
;
6351 unsigned long timeout
= NFS4_LOCK_MINTIMEOUT
;
6353 while(!signalled()) {
6354 status
= nfs4_proc_setlk(state
, cmd
, request
);
6355 if ((status
!= -EAGAIN
) || IS_SETLK(cmd
))
6357 freezable_schedule_timeout_interruptible(timeout
);
6359 timeout
= min_t(unsigned long, NFS4_LOCK_MAXTIMEOUT
, timeout
);
6360 status
= -ERESTARTSYS
;
6365 #ifdef CONFIG_NFS_V4_1
6366 struct nfs4_lock_waiter
{
6367 struct task_struct
*task
;
6368 struct inode
*inode
;
6369 struct nfs_lowner
*owner
;
6374 nfs4_wake_lock_waiter(wait_queue_t
*wait
, unsigned int mode
, int flags
, void *key
)
6377 struct cb_notify_lock_args
*cbnl
= key
;
6378 struct nfs4_lock_waiter
*waiter
= wait
->private;
6379 struct nfs_lowner
*lowner
= &cbnl
->cbnl_owner
,
6380 *wowner
= waiter
->owner
;
6382 /* Only wake if the callback was for the same owner */
6383 if (lowner
->clientid
!= wowner
->clientid
||
6384 lowner
->id
!= wowner
->id
||
6385 lowner
->s_dev
!= wowner
->s_dev
)
6388 /* Make sure it's for the right inode */
6389 if (nfs_compare_fh(NFS_FH(waiter
->inode
), &cbnl
->cbnl_fh
))
6392 waiter
->notified
= true;
6394 /* override "private" so we can use default_wake_function */
6395 wait
->private = waiter
->task
;
6396 ret
= autoremove_wake_function(wait
, mode
, flags
, key
);
6397 wait
->private = waiter
;
6402 nfs4_retry_setlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
6404 int status
= -ERESTARTSYS
;
6405 unsigned long flags
;
6406 struct nfs4_lock_state
*lsp
= request
->fl_u
.nfs4_fl
.owner
;
6407 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
6408 struct nfs_client
*clp
= server
->nfs_client
;
6409 wait_queue_head_t
*q
= &clp
->cl_lock_waitq
;
6410 struct nfs_lowner owner
= { .clientid
= clp
->cl_clientid
,
6411 .id
= lsp
->ls_seqid
.owner_id
,
6412 .s_dev
= server
->s_dev
};
6413 struct nfs4_lock_waiter waiter
= { .task
= current
,
6414 .inode
= state
->inode
,
6416 .notified
= false };
6419 /* Don't bother with waitqueue if we don't expect a callback */
6420 if (!test_bit(NFS_STATE_MAY_NOTIFY_LOCK
, &state
->flags
))
6421 return nfs4_retry_setlk_simple(state
, cmd
, request
);
6424 wait
.private = &waiter
;
6425 wait
.func
= nfs4_wake_lock_waiter
;
6426 add_wait_queue(q
, &wait
);
6428 while(!signalled()) {
6429 status
= nfs4_proc_setlk(state
, cmd
, request
);
6430 if ((status
!= -EAGAIN
) || IS_SETLK(cmd
))
6433 status
= -ERESTARTSYS
;
6434 spin_lock_irqsave(&q
->lock
, flags
);
6435 if (waiter
.notified
) {
6436 spin_unlock_irqrestore(&q
->lock
, flags
);
6439 set_current_state(TASK_INTERRUPTIBLE
);
6440 spin_unlock_irqrestore(&q
->lock
, flags
);
6442 freezable_schedule_timeout_interruptible(NFS4_LOCK_MAXTIMEOUT
);
6445 finish_wait(q
, &wait
);
6448 #else /* !CONFIG_NFS_V4_1 */
6450 nfs4_retry_setlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
6452 return nfs4_retry_setlk_simple(state
, cmd
, request
);
6457 nfs4_proc_lock(struct file
*filp
, int cmd
, struct file_lock
*request
)
6459 struct nfs_open_context
*ctx
;
6460 struct nfs4_state
*state
;
6463 /* verify open state */
6464 ctx
= nfs_file_open_context(filp
);
6467 if (request
->fl_start
< 0 || request
->fl_end
< 0)
6470 if (IS_GETLK(cmd
)) {
6472 return nfs4_proc_getlk(state
, F_GETLK
, request
);
6476 if (!(IS_SETLK(cmd
) || IS_SETLKW(cmd
)))
6479 if (request
->fl_type
== F_UNLCK
) {
6481 return nfs4_proc_unlck(state
, cmd
, request
);
6488 if ((request
->fl_flags
& FL_POSIX
) &&
6489 !test_bit(NFS_STATE_POSIX_LOCKS
, &state
->flags
))
6493 * Don't rely on the VFS having checked the file open mode,
6494 * since it won't do this for flock() locks.
6496 switch (request
->fl_type
) {
6498 if (!(filp
->f_mode
& FMODE_READ
))
6502 if (!(filp
->f_mode
& FMODE_WRITE
))
6506 status
= nfs4_set_lock_state(state
, request
);
6510 return nfs4_retry_setlk(state
, cmd
, request
);
6513 int nfs4_lock_delegation_recall(struct file_lock
*fl
, struct nfs4_state
*state
, const nfs4_stateid
*stateid
)
6515 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
6518 err
= nfs4_set_lock_state(state
, fl
);
6521 err
= _nfs4_do_setlk(state
, F_SETLK
, fl
, NFS_LOCK_NEW
);
6522 return nfs4_handle_delegation_recall_error(server
, state
, stateid
, err
);
6525 struct nfs_release_lockowner_data
{
6526 struct nfs4_lock_state
*lsp
;
6527 struct nfs_server
*server
;
6528 struct nfs_release_lockowner_args args
;
6529 struct nfs_release_lockowner_res res
;
6530 unsigned long timestamp
;
6533 static void nfs4_release_lockowner_prepare(struct rpc_task
*task
, void *calldata
)
6535 struct nfs_release_lockowner_data
*data
= calldata
;
6536 struct nfs_server
*server
= data
->server
;
6537 nfs4_setup_sequence(server
->nfs_client
, &data
->args
.seq_args
,
6538 &data
->res
.seq_res
, task
);
6539 data
->args
.lock_owner
.clientid
= server
->nfs_client
->cl_clientid
;
6540 data
->timestamp
= jiffies
;
6543 static void nfs4_release_lockowner_done(struct rpc_task
*task
, void *calldata
)
6545 struct nfs_release_lockowner_data
*data
= calldata
;
6546 struct nfs_server
*server
= data
->server
;
6548 nfs40_sequence_done(task
, &data
->res
.seq_res
);
6550 switch (task
->tk_status
) {
6552 renew_lease(server
, data
->timestamp
);
6554 case -NFS4ERR_STALE_CLIENTID
:
6555 case -NFS4ERR_EXPIRED
:
6556 nfs4_schedule_lease_recovery(server
->nfs_client
);
6558 case -NFS4ERR_LEASE_MOVED
:
6559 case -NFS4ERR_DELAY
:
6560 if (nfs4_async_handle_error(task
, server
,
6561 NULL
, NULL
) == -EAGAIN
)
6562 rpc_restart_call_prepare(task
);
6566 static void nfs4_release_lockowner_release(void *calldata
)
6568 struct nfs_release_lockowner_data
*data
= calldata
;
6569 nfs4_free_lock_state(data
->server
, data
->lsp
);
6573 static const struct rpc_call_ops nfs4_release_lockowner_ops
= {
6574 .rpc_call_prepare
= nfs4_release_lockowner_prepare
,
6575 .rpc_call_done
= nfs4_release_lockowner_done
,
6576 .rpc_release
= nfs4_release_lockowner_release
,
6580 nfs4_release_lockowner(struct nfs_server
*server
, struct nfs4_lock_state
*lsp
)
6582 struct nfs_release_lockowner_data
*data
;
6583 struct rpc_message msg
= {
6584 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RELEASE_LOCKOWNER
],
6587 if (server
->nfs_client
->cl_mvops
->minor_version
!= 0)
6590 data
= kmalloc(sizeof(*data
), GFP_NOFS
);
6594 data
->server
= server
;
6595 data
->args
.lock_owner
.clientid
= server
->nfs_client
->cl_clientid
;
6596 data
->args
.lock_owner
.id
= lsp
->ls_seqid
.owner_id
;
6597 data
->args
.lock_owner
.s_dev
= server
->s_dev
;
6599 msg
.rpc_argp
= &data
->args
;
6600 msg
.rpc_resp
= &data
->res
;
6601 nfs4_init_sequence(&data
->args
.seq_args
, &data
->res
.seq_res
, 0);
6602 rpc_call_async(server
->client
, &msg
, 0, &nfs4_release_lockowner_ops
, data
);
6605 #define XATTR_NAME_NFSV4_ACL "system.nfs4_acl"
6607 static int nfs4_xattr_set_nfs4_acl(const struct xattr_handler
*handler
,
6608 struct dentry
*unused
, struct inode
*inode
,
6609 const char *key
, const void *buf
,
6610 size_t buflen
, int flags
)
6612 return nfs4_proc_set_acl(inode
, buf
, buflen
);
6615 static int nfs4_xattr_get_nfs4_acl(const struct xattr_handler
*handler
,
6616 struct dentry
*unused
, struct inode
*inode
,
6617 const char *key
, void *buf
, size_t buflen
)
6619 return nfs4_proc_get_acl(inode
, buf
, buflen
);
6622 static bool nfs4_xattr_list_nfs4_acl(struct dentry
*dentry
)
6624 return nfs4_server_supports_acls(NFS_SERVER(d_inode(dentry
)));
6627 #ifdef CONFIG_NFS_V4_SECURITY_LABEL
6629 static int nfs4_xattr_set_nfs4_label(const struct xattr_handler
*handler
,
6630 struct dentry
*unused
, struct inode
*inode
,
6631 const char *key
, const void *buf
,
6632 size_t buflen
, int flags
)
6634 if (security_ismaclabel(key
))
6635 return nfs4_set_security_label(inode
, buf
, buflen
);
6640 static int nfs4_xattr_get_nfs4_label(const struct xattr_handler
*handler
,
6641 struct dentry
*unused
, struct inode
*inode
,
6642 const char *key
, void *buf
, size_t buflen
)
6644 if (security_ismaclabel(key
))
6645 return nfs4_get_security_label(inode
, buf
, buflen
);
6650 nfs4_listxattr_nfs4_label(struct inode
*inode
, char *list
, size_t list_len
)
6654 if (nfs_server_capable(inode
, NFS_CAP_SECURITY_LABEL
)) {
6655 len
= security_inode_listsecurity(inode
, list
, list_len
);
6656 if (list_len
&& len
> list_len
)
6662 static const struct xattr_handler nfs4_xattr_nfs4_label_handler
= {
6663 .prefix
= XATTR_SECURITY_PREFIX
,
6664 .get
= nfs4_xattr_get_nfs4_label
,
6665 .set
= nfs4_xattr_set_nfs4_label
,
6671 nfs4_listxattr_nfs4_label(struct inode
*inode
, char *list
, size_t list_len
)
6679 * nfs_fhget will use either the mounted_on_fileid or the fileid
6681 static void nfs_fixup_referral_attributes(struct nfs_fattr
*fattr
)
6683 if (!(((fattr
->valid
& NFS_ATTR_FATTR_MOUNTED_ON_FILEID
) ||
6684 (fattr
->valid
& NFS_ATTR_FATTR_FILEID
)) &&
6685 (fattr
->valid
& NFS_ATTR_FATTR_FSID
) &&
6686 (fattr
->valid
& NFS_ATTR_FATTR_V4_LOCATIONS
)))
6689 fattr
->valid
|= NFS_ATTR_FATTR_TYPE
| NFS_ATTR_FATTR_MODE
|
6690 NFS_ATTR_FATTR_NLINK
| NFS_ATTR_FATTR_V4_REFERRAL
;
6691 fattr
->mode
= S_IFDIR
| S_IRUGO
| S_IXUGO
;
6695 static int _nfs4_proc_fs_locations(struct rpc_clnt
*client
, struct inode
*dir
,
6696 const struct qstr
*name
,
6697 struct nfs4_fs_locations
*fs_locations
,
6700 struct nfs_server
*server
= NFS_SERVER(dir
);
6702 [0] = FATTR4_WORD0_FSID
| FATTR4_WORD0_FS_LOCATIONS
,
6704 struct nfs4_fs_locations_arg args
= {
6705 .dir_fh
= NFS_FH(dir
),
6710 struct nfs4_fs_locations_res res
= {
6711 .fs_locations
= fs_locations
,
6713 struct rpc_message msg
= {
6714 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_FS_LOCATIONS
],
6720 dprintk("%s: start\n", __func__
);
6722 /* Ask for the fileid of the absent filesystem if mounted_on_fileid
6723 * is not supported */
6724 if (NFS_SERVER(dir
)->attr_bitmask
[1] & FATTR4_WORD1_MOUNTED_ON_FILEID
)
6725 bitmask
[1] |= FATTR4_WORD1_MOUNTED_ON_FILEID
;
6727 bitmask
[0] |= FATTR4_WORD0_FILEID
;
6729 nfs_fattr_init(&fs_locations
->fattr
);
6730 fs_locations
->server
= server
;
6731 fs_locations
->nlocations
= 0;
6732 status
= nfs4_call_sync(client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
6733 dprintk("%s: returned status = %d\n", __func__
, status
);
6737 int nfs4_proc_fs_locations(struct rpc_clnt
*client
, struct inode
*dir
,
6738 const struct qstr
*name
,
6739 struct nfs4_fs_locations
*fs_locations
,
6742 struct nfs4_exception exception
= { };
6745 err
= _nfs4_proc_fs_locations(client
, dir
, name
,
6746 fs_locations
, page
);
6747 trace_nfs4_get_fs_locations(dir
, name
, err
);
6748 err
= nfs4_handle_exception(NFS_SERVER(dir
), err
,
6750 } while (exception
.retry
);
6755 * This operation also signals the server that this client is
6756 * performing migration recovery. The server can stop returning
6757 * NFS4ERR_LEASE_MOVED to this client. A RENEW operation is
6758 * appended to this compound to identify the client ID which is
6759 * performing recovery.
6761 static int _nfs40_proc_get_locations(struct inode
*inode
,
6762 struct nfs4_fs_locations
*locations
,
6763 struct page
*page
, struct rpc_cred
*cred
)
6765 struct nfs_server
*server
= NFS_SERVER(inode
);
6766 struct rpc_clnt
*clnt
= server
->client
;
6768 [0] = FATTR4_WORD0_FSID
| FATTR4_WORD0_FS_LOCATIONS
,
6770 struct nfs4_fs_locations_arg args
= {
6771 .clientid
= server
->nfs_client
->cl_clientid
,
6772 .fh
= NFS_FH(inode
),
6775 .migration
= 1, /* skip LOOKUP */
6776 .renew
= 1, /* append RENEW */
6778 struct nfs4_fs_locations_res res
= {
6779 .fs_locations
= locations
,
6783 struct rpc_message msg
= {
6784 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_FS_LOCATIONS
],
6789 unsigned long now
= jiffies
;
6792 nfs_fattr_init(&locations
->fattr
);
6793 locations
->server
= server
;
6794 locations
->nlocations
= 0;
6796 nfs4_init_sequence(&args
.seq_args
, &res
.seq_res
, 0);
6797 nfs4_set_sequence_privileged(&args
.seq_args
);
6798 status
= nfs4_call_sync_sequence(clnt
, server
, &msg
,
6799 &args
.seq_args
, &res
.seq_res
);
6803 renew_lease(server
, now
);
6807 #ifdef CONFIG_NFS_V4_1
6810 * This operation also signals the server that this client is
6811 * performing migration recovery. The server can stop asserting
6812 * SEQ4_STATUS_LEASE_MOVED for this client. The client ID
6813 * performing this operation is identified in the SEQUENCE
6814 * operation in this compound.
6816 * When the client supports GETATTR(fs_locations_info), it can
6817 * be plumbed in here.
6819 static int _nfs41_proc_get_locations(struct inode
*inode
,
6820 struct nfs4_fs_locations
*locations
,
6821 struct page
*page
, struct rpc_cred
*cred
)
6823 struct nfs_server
*server
= NFS_SERVER(inode
);
6824 struct rpc_clnt
*clnt
= server
->client
;
6826 [0] = FATTR4_WORD0_FSID
| FATTR4_WORD0_FS_LOCATIONS
,
6828 struct nfs4_fs_locations_arg args
= {
6829 .fh
= NFS_FH(inode
),
6832 .migration
= 1, /* skip LOOKUP */
6834 struct nfs4_fs_locations_res res
= {
6835 .fs_locations
= locations
,
6838 struct rpc_message msg
= {
6839 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_FS_LOCATIONS
],
6846 nfs_fattr_init(&locations
->fattr
);
6847 locations
->server
= server
;
6848 locations
->nlocations
= 0;
6850 nfs4_init_sequence(&args
.seq_args
, &res
.seq_res
, 0);
6851 nfs4_set_sequence_privileged(&args
.seq_args
);
6852 status
= nfs4_call_sync_sequence(clnt
, server
, &msg
,
6853 &args
.seq_args
, &res
.seq_res
);
6854 if (status
== NFS4_OK
&&
6855 res
.seq_res
.sr_status_flags
& SEQ4_STATUS_LEASE_MOVED
)
6856 status
= -NFS4ERR_LEASE_MOVED
;
6860 #endif /* CONFIG_NFS_V4_1 */
6863 * nfs4_proc_get_locations - discover locations for a migrated FSID
6864 * @inode: inode on FSID that is migrating
6865 * @locations: result of query
6867 * @cred: credential to use for this operation
6869 * Returns NFS4_OK on success, a negative NFS4ERR status code if the
6870 * operation failed, or a negative errno if a local error occurred.
6872 * On success, "locations" is filled in, but if the server has
6873 * no locations information, NFS_ATTR_FATTR_V4_LOCATIONS is not
6876 * -NFS4ERR_LEASE_MOVED is returned if the server still has leases
6877 * from this client that require migration recovery.
6879 int nfs4_proc_get_locations(struct inode
*inode
,
6880 struct nfs4_fs_locations
*locations
,
6881 struct page
*page
, struct rpc_cred
*cred
)
6883 struct nfs_server
*server
= NFS_SERVER(inode
);
6884 struct nfs_client
*clp
= server
->nfs_client
;
6885 const struct nfs4_mig_recovery_ops
*ops
=
6886 clp
->cl_mvops
->mig_recovery_ops
;
6887 struct nfs4_exception exception
= { };
6890 dprintk("%s: FSID %llx:%llx on \"%s\"\n", __func__
,
6891 (unsigned long long)server
->fsid
.major
,
6892 (unsigned long long)server
->fsid
.minor
,
6894 nfs_display_fhandle(NFS_FH(inode
), __func__
);
6897 status
= ops
->get_locations(inode
, locations
, page
, cred
);
6898 if (status
!= -NFS4ERR_DELAY
)
6900 nfs4_handle_exception(server
, status
, &exception
);
6901 } while (exception
.retry
);
6906 * This operation also signals the server that this client is
6907 * performing "lease moved" recovery. The server can stop
6908 * returning NFS4ERR_LEASE_MOVED to this client. A RENEW operation
6909 * is appended to this compound to identify the client ID which is
6910 * performing recovery.
6912 static int _nfs40_proc_fsid_present(struct inode
*inode
, struct rpc_cred
*cred
)
6914 struct nfs_server
*server
= NFS_SERVER(inode
);
6915 struct nfs_client
*clp
= NFS_SERVER(inode
)->nfs_client
;
6916 struct rpc_clnt
*clnt
= server
->client
;
6917 struct nfs4_fsid_present_arg args
= {
6918 .fh
= NFS_FH(inode
),
6919 .clientid
= clp
->cl_clientid
,
6920 .renew
= 1, /* append RENEW */
6922 struct nfs4_fsid_present_res res
= {
6925 struct rpc_message msg
= {
6926 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_FSID_PRESENT
],
6931 unsigned long now
= jiffies
;
6934 res
.fh
= nfs_alloc_fhandle();
6938 nfs4_init_sequence(&args
.seq_args
, &res
.seq_res
, 0);
6939 nfs4_set_sequence_privileged(&args
.seq_args
);
6940 status
= nfs4_call_sync_sequence(clnt
, server
, &msg
,
6941 &args
.seq_args
, &res
.seq_res
);
6942 nfs_free_fhandle(res
.fh
);
6946 do_renew_lease(clp
, now
);
6950 #ifdef CONFIG_NFS_V4_1
6953 * This operation also signals the server that this client is
6954 * performing "lease moved" recovery. The server can stop asserting
6955 * SEQ4_STATUS_LEASE_MOVED for this client. The client ID performing
6956 * this operation is identified in the SEQUENCE operation in this
6959 static int _nfs41_proc_fsid_present(struct inode
*inode
, struct rpc_cred
*cred
)
6961 struct nfs_server
*server
= NFS_SERVER(inode
);
6962 struct rpc_clnt
*clnt
= server
->client
;
6963 struct nfs4_fsid_present_arg args
= {
6964 .fh
= NFS_FH(inode
),
6966 struct nfs4_fsid_present_res res
= {
6968 struct rpc_message msg
= {
6969 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_FSID_PRESENT
],
6976 res
.fh
= nfs_alloc_fhandle();
6980 nfs4_init_sequence(&args
.seq_args
, &res
.seq_res
, 0);
6981 nfs4_set_sequence_privileged(&args
.seq_args
);
6982 status
= nfs4_call_sync_sequence(clnt
, server
, &msg
,
6983 &args
.seq_args
, &res
.seq_res
);
6984 nfs_free_fhandle(res
.fh
);
6985 if (status
== NFS4_OK
&&
6986 res
.seq_res
.sr_status_flags
& SEQ4_STATUS_LEASE_MOVED
)
6987 status
= -NFS4ERR_LEASE_MOVED
;
6991 #endif /* CONFIG_NFS_V4_1 */
6994 * nfs4_proc_fsid_present - Is this FSID present or absent on server?
6995 * @inode: inode on FSID to check
6996 * @cred: credential to use for this operation
6998 * Server indicates whether the FSID is present, moved, or not
6999 * recognized. This operation is necessary to clear a LEASE_MOVED
7000 * condition for this client ID.
7002 * Returns NFS4_OK if the FSID is present on this server,
7003 * -NFS4ERR_MOVED if the FSID is no longer present, a negative
7004 * NFS4ERR code if some error occurred on the server, or a
7005 * negative errno if a local failure occurred.
7007 int nfs4_proc_fsid_present(struct inode
*inode
, struct rpc_cred
*cred
)
7009 struct nfs_server
*server
= NFS_SERVER(inode
);
7010 struct nfs_client
*clp
= server
->nfs_client
;
7011 const struct nfs4_mig_recovery_ops
*ops
=
7012 clp
->cl_mvops
->mig_recovery_ops
;
7013 struct nfs4_exception exception
= { };
7016 dprintk("%s: FSID %llx:%llx on \"%s\"\n", __func__
,
7017 (unsigned long long)server
->fsid
.major
,
7018 (unsigned long long)server
->fsid
.minor
,
7020 nfs_display_fhandle(NFS_FH(inode
), __func__
);
7023 status
= ops
->fsid_present(inode
, cred
);
7024 if (status
!= -NFS4ERR_DELAY
)
7026 nfs4_handle_exception(server
, status
, &exception
);
7027 } while (exception
.retry
);
7032 * If 'use_integrity' is true and the state managment nfs_client
7033 * cl_rpcclient is using krb5i/p, use the integrity protected cl_rpcclient
7034 * and the machine credential as per RFC3530bis and RFC5661 Security
7035 * Considerations sections. Otherwise, just use the user cred with the
7036 * filesystem's rpc_client.
7038 static int _nfs4_proc_secinfo(struct inode
*dir
, const struct qstr
*name
, struct nfs4_secinfo_flavors
*flavors
, bool use_integrity
)
7041 struct nfs4_secinfo_arg args
= {
7042 .dir_fh
= NFS_FH(dir
),
7045 struct nfs4_secinfo_res res
= {
7048 struct rpc_message msg
= {
7049 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SECINFO
],
7053 struct rpc_clnt
*clnt
= NFS_SERVER(dir
)->client
;
7054 struct rpc_cred
*cred
= NULL
;
7056 if (use_integrity
) {
7057 clnt
= NFS_SERVER(dir
)->nfs_client
->cl_rpcclient
;
7058 cred
= nfs4_get_clid_cred(NFS_SERVER(dir
)->nfs_client
);
7059 msg
.rpc_cred
= cred
;
7062 dprintk("NFS call secinfo %s\n", name
->name
);
7064 nfs4_state_protect(NFS_SERVER(dir
)->nfs_client
,
7065 NFS_SP4_MACH_CRED_SECINFO
, &clnt
, &msg
);
7067 status
= nfs4_call_sync(clnt
, NFS_SERVER(dir
), &msg
, &args
.seq_args
,
7069 dprintk("NFS reply secinfo: %d\n", status
);
7077 int nfs4_proc_secinfo(struct inode
*dir
, const struct qstr
*name
,
7078 struct nfs4_secinfo_flavors
*flavors
)
7080 struct nfs4_exception exception
= { };
7083 err
= -NFS4ERR_WRONGSEC
;
7085 /* try to use integrity protection with machine cred */
7086 if (_nfs4_is_integrity_protected(NFS_SERVER(dir
)->nfs_client
))
7087 err
= _nfs4_proc_secinfo(dir
, name
, flavors
, true);
7090 * if unable to use integrity protection, or SECINFO with
7091 * integrity protection returns NFS4ERR_WRONGSEC (which is
7092 * disallowed by spec, but exists in deployed servers) use
7093 * the current filesystem's rpc_client and the user cred.
7095 if (err
== -NFS4ERR_WRONGSEC
)
7096 err
= _nfs4_proc_secinfo(dir
, name
, flavors
, false);
7098 trace_nfs4_secinfo(dir
, name
, err
);
7099 err
= nfs4_handle_exception(NFS_SERVER(dir
), err
,
7101 } while (exception
.retry
);
7105 #ifdef CONFIG_NFS_V4_1
7107 * Check the exchange flags returned by the server for invalid flags, having
7108 * both PNFS and NON_PNFS flags set, and not having one of NON_PNFS, PNFS, or
7111 static int nfs4_check_cl_exchange_flags(u32 flags
)
7113 if (flags
& ~EXCHGID4_FLAG_MASK_R
)
7115 if ((flags
& EXCHGID4_FLAG_USE_PNFS_MDS
) &&
7116 (flags
& EXCHGID4_FLAG_USE_NON_PNFS
))
7118 if (!(flags
& (EXCHGID4_FLAG_MASK_PNFS
)))
7122 return -NFS4ERR_INVAL
;
7126 nfs41_same_server_scope(struct nfs41_server_scope
*a
,
7127 struct nfs41_server_scope
*b
)
7129 if (a
->server_scope_sz
== b
->server_scope_sz
&&
7130 memcmp(a
->server_scope
, b
->server_scope
, a
->server_scope_sz
) == 0)
7137 nfs4_bind_one_conn_to_session_done(struct rpc_task
*task
, void *calldata
)
7141 static const struct rpc_call_ops nfs4_bind_one_conn_to_session_ops
= {
7142 .rpc_call_done
= &nfs4_bind_one_conn_to_session_done
,
7146 * nfs4_proc_bind_one_conn_to_session()
7148 * The 4.1 client currently uses the same TCP connection for the
7149 * fore and backchannel.
7152 int nfs4_proc_bind_one_conn_to_session(struct rpc_clnt
*clnt
,
7153 struct rpc_xprt
*xprt
,
7154 struct nfs_client
*clp
,
7155 struct rpc_cred
*cred
)
7158 struct nfs41_bind_conn_to_session_args args
= {
7160 .dir
= NFS4_CDFC4_FORE_OR_BOTH
,
7162 struct nfs41_bind_conn_to_session_res res
;
7163 struct rpc_message msg
= {
7165 &nfs4_procedures
[NFSPROC4_CLNT_BIND_CONN_TO_SESSION
],
7170 struct rpc_task_setup task_setup_data
= {
7173 .callback_ops
= &nfs4_bind_one_conn_to_session_ops
,
7174 .rpc_message
= &msg
,
7175 .flags
= RPC_TASK_TIMEOUT
,
7177 struct rpc_task
*task
;
7179 dprintk("--> %s\n", __func__
);
7181 nfs4_copy_sessionid(&args
.sessionid
, &clp
->cl_session
->sess_id
);
7182 if (!(clp
->cl_session
->flags
& SESSION4_BACK_CHAN
))
7183 args
.dir
= NFS4_CDFC4_FORE
;
7185 /* Do not set the backchannel flag unless this is clnt->cl_xprt */
7186 if (xprt
!= rcu_access_pointer(clnt
->cl_xprt
))
7187 args
.dir
= NFS4_CDFC4_FORE
;
7189 task
= rpc_run_task(&task_setup_data
);
7190 if (!IS_ERR(task
)) {
7191 status
= task
->tk_status
;
7194 status
= PTR_ERR(task
);
7195 trace_nfs4_bind_conn_to_session(clp
, status
);
7197 if (memcmp(res
.sessionid
.data
,
7198 clp
->cl_session
->sess_id
.data
, NFS4_MAX_SESSIONID_LEN
)) {
7199 dprintk("NFS: %s: Session ID mismatch\n", __func__
);
7203 if ((res
.dir
& args
.dir
) != res
.dir
|| res
.dir
== 0) {
7204 dprintk("NFS: %s: Unexpected direction from server\n",
7209 if (res
.use_conn_in_rdma_mode
!= args
.use_conn_in_rdma_mode
) {
7210 dprintk("NFS: %s: Server returned RDMA mode = true\n",
7217 dprintk("<-- %s status= %d\n", __func__
, status
);
7221 struct rpc_bind_conn_calldata
{
7222 struct nfs_client
*clp
;
7223 struct rpc_cred
*cred
;
7227 nfs4_proc_bind_conn_to_session_callback(struct rpc_clnt
*clnt
,
7228 struct rpc_xprt
*xprt
,
7231 struct rpc_bind_conn_calldata
*p
= calldata
;
7233 return nfs4_proc_bind_one_conn_to_session(clnt
, xprt
, p
->clp
, p
->cred
);
7236 int nfs4_proc_bind_conn_to_session(struct nfs_client
*clp
, struct rpc_cred
*cred
)
7238 struct rpc_bind_conn_calldata data
= {
7242 return rpc_clnt_iterate_for_each_xprt(clp
->cl_rpcclient
,
7243 nfs4_proc_bind_conn_to_session_callback
, &data
);
7247 * Minimum set of SP4_MACH_CRED operations from RFC 5661 in the enforce map
7248 * and operations we'd like to see to enable certain features in the allow map
7250 static const struct nfs41_state_protection nfs4_sp4_mach_cred_request
= {
7251 .how
= SP4_MACH_CRED
,
7252 .enforce
.u
.words
= {
7253 [1] = 1 << (OP_BIND_CONN_TO_SESSION
- 32) |
7254 1 << (OP_EXCHANGE_ID
- 32) |
7255 1 << (OP_CREATE_SESSION
- 32) |
7256 1 << (OP_DESTROY_SESSION
- 32) |
7257 1 << (OP_DESTROY_CLIENTID
- 32)
7260 [0] = 1 << (OP_CLOSE
) |
7261 1 << (OP_OPEN_DOWNGRADE
) |
7263 1 << (OP_DELEGRETURN
) |
7265 [1] = 1 << (OP_SECINFO
- 32) |
7266 1 << (OP_SECINFO_NO_NAME
- 32) |
7267 1 << (OP_LAYOUTRETURN
- 32) |
7268 1 << (OP_TEST_STATEID
- 32) |
7269 1 << (OP_FREE_STATEID
- 32) |
7270 1 << (OP_WRITE
- 32)
7275 * Select the state protection mode for client `clp' given the server results
7276 * from exchange_id in `sp'.
7278 * Returns 0 on success, negative errno otherwise.
7280 static int nfs4_sp4_select_mode(struct nfs_client
*clp
,
7281 struct nfs41_state_protection
*sp
)
7283 static const u32 supported_enforce
[NFS4_OP_MAP_NUM_WORDS
] = {
7284 [1] = 1 << (OP_BIND_CONN_TO_SESSION
- 32) |
7285 1 << (OP_EXCHANGE_ID
- 32) |
7286 1 << (OP_CREATE_SESSION
- 32) |
7287 1 << (OP_DESTROY_SESSION
- 32) |
7288 1 << (OP_DESTROY_CLIENTID
- 32)
7292 if (sp
->how
== SP4_MACH_CRED
) {
7293 /* Print state protect result */
7294 dfprintk(MOUNT
, "Server SP4_MACH_CRED support:\n");
7295 for (i
= 0; i
<= LAST_NFS4_OP
; i
++) {
7296 if (test_bit(i
, sp
->enforce
.u
.longs
))
7297 dfprintk(MOUNT
, " enforce op %d\n", i
);
7298 if (test_bit(i
, sp
->allow
.u
.longs
))
7299 dfprintk(MOUNT
, " allow op %d\n", i
);
7302 /* make sure nothing is on enforce list that isn't supported */
7303 for (i
= 0; i
< NFS4_OP_MAP_NUM_WORDS
; i
++) {
7304 if (sp
->enforce
.u
.words
[i
] & ~supported_enforce
[i
]) {
7305 dfprintk(MOUNT
, "sp4_mach_cred: disabled\n");
7311 * Minimal mode - state operations are allowed to use machine
7312 * credential. Note this already happens by default, so the
7313 * client doesn't have to do anything more than the negotiation.
7315 * NOTE: we don't care if EXCHANGE_ID is in the list -
7316 * we're already using the machine cred for exchange_id
7317 * and will never use a different cred.
7319 if (test_bit(OP_BIND_CONN_TO_SESSION
, sp
->enforce
.u
.longs
) &&
7320 test_bit(OP_CREATE_SESSION
, sp
->enforce
.u
.longs
) &&
7321 test_bit(OP_DESTROY_SESSION
, sp
->enforce
.u
.longs
) &&
7322 test_bit(OP_DESTROY_CLIENTID
, sp
->enforce
.u
.longs
)) {
7323 dfprintk(MOUNT
, "sp4_mach_cred:\n");
7324 dfprintk(MOUNT
, " minimal mode enabled\n");
7325 set_bit(NFS_SP4_MACH_CRED_MINIMAL
, &clp
->cl_sp4_flags
);
7327 dfprintk(MOUNT
, "sp4_mach_cred: disabled\n");
7331 if (test_bit(OP_CLOSE
, sp
->allow
.u
.longs
) &&
7332 test_bit(OP_OPEN_DOWNGRADE
, sp
->allow
.u
.longs
) &&
7333 test_bit(OP_DELEGRETURN
, sp
->allow
.u
.longs
) &&
7334 test_bit(OP_LOCKU
, sp
->allow
.u
.longs
)) {
7335 dfprintk(MOUNT
, " cleanup mode enabled\n");
7336 set_bit(NFS_SP4_MACH_CRED_CLEANUP
, &clp
->cl_sp4_flags
);
7339 if (test_bit(OP_LAYOUTRETURN
, sp
->allow
.u
.longs
)) {
7340 dfprintk(MOUNT
, " pnfs cleanup mode enabled\n");
7341 set_bit(NFS_SP4_MACH_CRED_PNFS_CLEANUP
,
7342 &clp
->cl_sp4_flags
);
7345 if (test_bit(OP_SECINFO
, sp
->allow
.u
.longs
) &&
7346 test_bit(OP_SECINFO_NO_NAME
, sp
->allow
.u
.longs
)) {
7347 dfprintk(MOUNT
, " secinfo mode enabled\n");
7348 set_bit(NFS_SP4_MACH_CRED_SECINFO
, &clp
->cl_sp4_flags
);
7351 if (test_bit(OP_TEST_STATEID
, sp
->allow
.u
.longs
) &&
7352 test_bit(OP_FREE_STATEID
, sp
->allow
.u
.longs
)) {
7353 dfprintk(MOUNT
, " stateid mode enabled\n");
7354 set_bit(NFS_SP4_MACH_CRED_STATEID
, &clp
->cl_sp4_flags
);
7357 if (test_bit(OP_WRITE
, sp
->allow
.u
.longs
)) {
7358 dfprintk(MOUNT
, " write mode enabled\n");
7359 set_bit(NFS_SP4_MACH_CRED_WRITE
, &clp
->cl_sp4_flags
);
7362 if (test_bit(OP_COMMIT
, sp
->allow
.u
.longs
)) {
7363 dfprintk(MOUNT
, " commit mode enabled\n");
7364 set_bit(NFS_SP4_MACH_CRED_COMMIT
, &clp
->cl_sp4_flags
);
7371 struct nfs41_exchange_id_data
{
7372 struct nfs41_exchange_id_res res
;
7373 struct nfs41_exchange_id_args args
;
7374 struct rpc_xprt
*xprt
;
7378 static void nfs4_exchange_id_done(struct rpc_task
*task
, void *data
)
7380 struct nfs41_exchange_id_data
*cdata
=
7381 (struct nfs41_exchange_id_data
*)data
;
7382 struct nfs_client
*clp
= cdata
->args
.client
;
7383 int status
= task
->tk_status
;
7385 trace_nfs4_exchange_id(clp
, status
);
7388 status
= nfs4_check_cl_exchange_flags(cdata
->res
.flags
);
7390 if (cdata
->xprt
&& status
== 0) {
7391 status
= nfs4_detect_session_trunking(clp
, &cdata
->res
,
7397 status
= nfs4_sp4_select_mode(clp
, &cdata
->res
.state_protect
);
7400 clp
->cl_clientid
= cdata
->res
.clientid
;
7401 clp
->cl_exchange_flags
= cdata
->res
.flags
;
7402 /* Client ID is not confirmed */
7403 if (!(cdata
->res
.flags
& EXCHGID4_FLAG_CONFIRMED_R
)) {
7404 clear_bit(NFS4_SESSION_ESTABLISHED
,
7405 &clp
->cl_session
->session_state
);
7406 clp
->cl_seqid
= cdata
->res
.seqid
;
7409 kfree(clp
->cl_serverowner
);
7410 clp
->cl_serverowner
= cdata
->res
.server_owner
;
7411 cdata
->res
.server_owner
= NULL
;
7413 /* use the most recent implementation id */
7414 kfree(clp
->cl_implid
);
7415 clp
->cl_implid
= cdata
->res
.impl_id
;
7416 cdata
->res
.impl_id
= NULL
;
7418 if (clp
->cl_serverscope
!= NULL
&&
7419 !nfs41_same_server_scope(clp
->cl_serverscope
,
7420 cdata
->res
.server_scope
)) {
7421 dprintk("%s: server_scope mismatch detected\n",
7423 set_bit(NFS4CLNT_SERVER_SCOPE_MISMATCH
, &clp
->cl_state
);
7424 kfree(clp
->cl_serverscope
);
7425 clp
->cl_serverscope
= NULL
;
7428 if (clp
->cl_serverscope
== NULL
) {
7429 clp
->cl_serverscope
= cdata
->res
.server_scope
;
7430 cdata
->res
.server_scope
= NULL
;
7432 /* Save the EXCHANGE_ID verifier session trunk tests */
7433 memcpy(clp
->cl_confirm
.data
, cdata
->args
.verifier
->data
,
7434 sizeof(clp
->cl_confirm
.data
));
7437 cdata
->rpc_status
= status
;
7441 static void nfs4_exchange_id_release(void *data
)
7443 struct nfs41_exchange_id_data
*cdata
=
7444 (struct nfs41_exchange_id_data
*)data
;
7446 nfs_put_client(cdata
->args
.client
);
7448 xprt_put(cdata
->xprt
);
7449 rpc_clnt_xprt_switch_put(cdata
->args
.client
->cl_rpcclient
);
7451 kfree(cdata
->res
.impl_id
);
7452 kfree(cdata
->res
.server_scope
);
7453 kfree(cdata
->res
.server_owner
);
7457 static const struct rpc_call_ops nfs4_exchange_id_call_ops
= {
7458 .rpc_call_done
= nfs4_exchange_id_done
,
7459 .rpc_release
= nfs4_exchange_id_release
,
7463 * _nfs4_proc_exchange_id()
7465 * Wrapper for EXCHANGE_ID operation.
7467 static int _nfs4_proc_exchange_id(struct nfs_client
*clp
, struct rpc_cred
*cred
,
7468 u32 sp4_how
, struct rpc_xprt
*xprt
)
7470 nfs4_verifier verifier
;
7471 struct rpc_message msg
= {
7472 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_EXCHANGE_ID
],
7475 struct rpc_task_setup task_setup_data
= {
7476 .rpc_client
= clp
->cl_rpcclient
,
7477 .callback_ops
= &nfs4_exchange_id_call_ops
,
7478 .rpc_message
= &msg
,
7479 .flags
= RPC_TASK_ASYNC
| RPC_TASK_TIMEOUT
,
7481 struct nfs41_exchange_id_data
*calldata
;
7482 struct rpc_task
*task
;
7485 if (!atomic_inc_not_zero(&clp
->cl_count
))
7489 calldata
= kzalloc(sizeof(*calldata
), GFP_NOFS
);
7494 nfs4_init_boot_verifier(clp
, &verifier
);
7496 status
= nfs4_init_uniform_client_string(clp
);
7500 dprintk("NFS call exchange_id auth=%s, '%s'\n",
7501 clp
->cl_rpcclient
->cl_auth
->au_ops
->au_name
,
7504 calldata
->res
.server_owner
= kzalloc(sizeof(struct nfs41_server_owner
),
7507 if (unlikely(calldata
->res
.server_owner
== NULL
))
7510 calldata
->res
.server_scope
= kzalloc(sizeof(struct nfs41_server_scope
),
7512 if (unlikely(calldata
->res
.server_scope
== NULL
))
7513 goto out_server_owner
;
7515 calldata
->res
.impl_id
= kzalloc(sizeof(struct nfs41_impl_id
), GFP_NOFS
);
7516 if (unlikely(calldata
->res
.impl_id
== NULL
))
7517 goto out_server_scope
;
7521 calldata
->args
.state_protect
.how
= SP4_NONE
;
7525 calldata
->args
.state_protect
= nfs4_sp4_mach_cred_request
;
7535 calldata
->xprt
= xprt
;
7536 task_setup_data
.rpc_xprt
= xprt
;
7537 task_setup_data
.flags
=
7538 RPC_TASK_SOFT
|RPC_TASK_SOFTCONN
|RPC_TASK_ASYNC
;
7539 calldata
->args
.verifier
= &clp
->cl_confirm
;
7541 calldata
->args
.verifier
= &verifier
;
7543 calldata
->args
.client
= clp
;
7544 #ifdef CONFIG_NFS_V4_1_MIGRATION
7545 calldata
->args
.flags
= EXCHGID4_FLAG_SUPP_MOVED_REFER
|
7546 EXCHGID4_FLAG_BIND_PRINC_STATEID
|
7547 EXCHGID4_FLAG_SUPP_MOVED_MIGR
,
7549 calldata
->args
.flags
= EXCHGID4_FLAG_SUPP_MOVED_REFER
|
7550 EXCHGID4_FLAG_BIND_PRINC_STATEID
,
7552 msg
.rpc_argp
= &calldata
->args
;
7553 msg
.rpc_resp
= &calldata
->res
;
7554 task_setup_data
.callback_data
= calldata
;
7556 task
= rpc_run_task(&task_setup_data
);
7558 status
= PTR_ERR(task
);
7563 status
= rpc_wait_for_completion_task(task
);
7565 status
= calldata
->rpc_status
;
7566 } else /* session trunking test */
7567 status
= calldata
->rpc_status
;
7571 if (clp
->cl_implid
!= NULL
)
7572 dprintk("NFS reply exchange_id: Server Implementation ID: "
7573 "domain: %s, name: %s, date: %llu,%u\n",
7574 clp
->cl_implid
->domain
, clp
->cl_implid
->name
,
7575 clp
->cl_implid
->date
.seconds
,
7576 clp
->cl_implid
->date
.nseconds
);
7577 dprintk("NFS reply exchange_id: %d\n", status
);
7581 kfree(calldata
->res
.impl_id
);
7583 kfree(calldata
->res
.server_scope
);
7585 kfree(calldata
->res
.server_owner
);
7592 * nfs4_proc_exchange_id()
7594 * Returns zero, a negative errno, or a negative NFS4ERR status code.
7596 * Since the clientid has expired, all compounds using sessions
7597 * associated with the stale clientid will be returning
7598 * NFS4ERR_BADSESSION in the sequence operation, and will therefore
7599 * be in some phase of session reset.
7601 * Will attempt to negotiate SP4_MACH_CRED if krb5i / krb5p auth is used.
7603 int nfs4_proc_exchange_id(struct nfs_client
*clp
, struct rpc_cred
*cred
)
7605 rpc_authflavor_t authflavor
= clp
->cl_rpcclient
->cl_auth
->au_flavor
;
7608 /* try SP4_MACH_CRED if krb5i/p */
7609 if (authflavor
== RPC_AUTH_GSS_KRB5I
||
7610 authflavor
== RPC_AUTH_GSS_KRB5P
) {
7611 status
= _nfs4_proc_exchange_id(clp
, cred
, SP4_MACH_CRED
, NULL
);
7617 return _nfs4_proc_exchange_id(clp
, cred
, SP4_NONE
, NULL
);
7621 * nfs4_test_session_trunk
7623 * This is an add_xprt_test() test function called from
7624 * rpc_clnt_setup_test_and_add_xprt.
7626 * The rpc_xprt_switch is referrenced by rpc_clnt_setup_test_and_add_xprt
7627 * and is dereferrenced in nfs4_exchange_id_release
7629 * Upon success, add the new transport to the rpc_clnt
7631 * @clnt: struct rpc_clnt to get new transport
7632 * @xprt: the rpc_xprt to test
7633 * @data: call data for _nfs4_proc_exchange_id.
7635 int nfs4_test_session_trunk(struct rpc_clnt
*clnt
, struct rpc_xprt
*xprt
,
7638 struct nfs4_add_xprt_data
*adata
= (struct nfs4_add_xprt_data
*)data
;
7641 dprintk("--> %s try %s\n", __func__
,
7642 xprt
->address_strings
[RPC_DISPLAY_ADDR
]);
7644 sp4_how
= (adata
->clp
->cl_sp4_flags
== 0 ? SP4_NONE
: SP4_MACH_CRED
);
7646 /* Test connection for session trunking. Async exchange_id call */
7647 return _nfs4_proc_exchange_id(adata
->clp
, adata
->cred
, sp4_how
, xprt
);
7649 EXPORT_SYMBOL_GPL(nfs4_test_session_trunk
);
7651 static int _nfs4_proc_destroy_clientid(struct nfs_client
*clp
,
7652 struct rpc_cred
*cred
)
7654 struct rpc_message msg
= {
7655 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_DESTROY_CLIENTID
],
7661 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
7662 trace_nfs4_destroy_clientid(clp
, status
);
7664 dprintk("NFS: Got error %d from the server %s on "
7665 "DESTROY_CLIENTID.", status
, clp
->cl_hostname
);
7669 static int nfs4_proc_destroy_clientid(struct nfs_client
*clp
,
7670 struct rpc_cred
*cred
)
7675 for (loop
= NFS4_MAX_LOOP_ON_RECOVER
; loop
!= 0; loop
--) {
7676 ret
= _nfs4_proc_destroy_clientid(clp
, cred
);
7678 case -NFS4ERR_DELAY
:
7679 case -NFS4ERR_CLIENTID_BUSY
:
7689 int nfs4_destroy_clientid(struct nfs_client
*clp
)
7691 struct rpc_cred
*cred
;
7694 if (clp
->cl_mvops
->minor_version
< 1)
7696 if (clp
->cl_exchange_flags
== 0)
7698 if (clp
->cl_preserve_clid
)
7700 cred
= nfs4_get_clid_cred(clp
);
7701 ret
= nfs4_proc_destroy_clientid(clp
, cred
);
7706 case -NFS4ERR_STALE_CLIENTID
:
7707 clp
->cl_exchange_flags
= 0;
7713 struct nfs4_get_lease_time_data
{
7714 struct nfs4_get_lease_time_args
*args
;
7715 struct nfs4_get_lease_time_res
*res
;
7716 struct nfs_client
*clp
;
7719 static void nfs4_get_lease_time_prepare(struct rpc_task
*task
,
7722 struct nfs4_get_lease_time_data
*data
=
7723 (struct nfs4_get_lease_time_data
*)calldata
;
7725 dprintk("--> %s\n", __func__
);
7726 /* just setup sequence, do not trigger session recovery
7727 since we're invoked within one */
7728 nfs4_setup_sequence(data
->clp
,
7729 &data
->args
->la_seq_args
,
7730 &data
->res
->lr_seq_res
,
7732 dprintk("<-- %s\n", __func__
);
7736 * Called from nfs4_state_manager thread for session setup, so don't recover
7737 * from sequence operation or clientid errors.
7739 static void nfs4_get_lease_time_done(struct rpc_task
*task
, void *calldata
)
7741 struct nfs4_get_lease_time_data
*data
=
7742 (struct nfs4_get_lease_time_data
*)calldata
;
7744 dprintk("--> %s\n", __func__
);
7745 if (!nfs41_sequence_done(task
, &data
->res
->lr_seq_res
))
7747 switch (task
->tk_status
) {
7748 case -NFS4ERR_DELAY
:
7749 case -NFS4ERR_GRACE
:
7750 dprintk("%s Retry: tk_status %d\n", __func__
, task
->tk_status
);
7751 rpc_delay(task
, NFS4_POLL_RETRY_MIN
);
7752 task
->tk_status
= 0;
7754 case -NFS4ERR_RETRY_UNCACHED_REP
:
7755 rpc_restart_call_prepare(task
);
7758 dprintk("<-- %s\n", __func__
);
7761 static const struct rpc_call_ops nfs4_get_lease_time_ops
= {
7762 .rpc_call_prepare
= nfs4_get_lease_time_prepare
,
7763 .rpc_call_done
= nfs4_get_lease_time_done
,
7766 int nfs4_proc_get_lease_time(struct nfs_client
*clp
, struct nfs_fsinfo
*fsinfo
)
7768 struct rpc_task
*task
;
7769 struct nfs4_get_lease_time_args args
;
7770 struct nfs4_get_lease_time_res res
= {
7771 .lr_fsinfo
= fsinfo
,
7773 struct nfs4_get_lease_time_data data
= {
7778 struct rpc_message msg
= {
7779 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GET_LEASE_TIME
],
7783 struct rpc_task_setup task_setup
= {
7784 .rpc_client
= clp
->cl_rpcclient
,
7785 .rpc_message
= &msg
,
7786 .callback_ops
= &nfs4_get_lease_time_ops
,
7787 .callback_data
= &data
,
7788 .flags
= RPC_TASK_TIMEOUT
,
7792 nfs4_init_sequence(&args
.la_seq_args
, &res
.lr_seq_res
, 0);
7793 nfs4_set_sequence_privileged(&args
.la_seq_args
);
7794 dprintk("--> %s\n", __func__
);
7795 task
= rpc_run_task(&task_setup
);
7798 status
= PTR_ERR(task
);
7800 status
= task
->tk_status
;
7803 dprintk("<-- %s return %d\n", __func__
, status
);
7809 * Initialize the values to be used by the client in CREATE_SESSION
7810 * If nfs4_init_session set the fore channel request and response sizes,
7813 * Set the back channel max_resp_sz_cached to zero to force the client to
7814 * always set csa_cachethis to FALSE because the current implementation
7815 * of the back channel DRC only supports caching the CB_SEQUENCE operation.
7817 static void nfs4_init_channel_attrs(struct nfs41_create_session_args
*args
,
7818 struct rpc_clnt
*clnt
)
7820 unsigned int max_rqst_sz
, max_resp_sz
;
7821 unsigned int max_bc_payload
= rpc_max_bc_payload(clnt
);
7823 max_rqst_sz
= NFS_MAX_FILE_IO_SIZE
+ nfs41_maxwrite_overhead
;
7824 max_resp_sz
= NFS_MAX_FILE_IO_SIZE
+ nfs41_maxread_overhead
;
7826 /* Fore channel attributes */
7827 args
->fc_attrs
.max_rqst_sz
= max_rqst_sz
;
7828 args
->fc_attrs
.max_resp_sz
= max_resp_sz
;
7829 args
->fc_attrs
.max_ops
= NFS4_MAX_OPS
;
7830 args
->fc_attrs
.max_reqs
= max_session_slots
;
7832 dprintk("%s: Fore Channel : max_rqst_sz=%u max_resp_sz=%u "
7833 "max_ops=%u max_reqs=%u\n",
7835 args
->fc_attrs
.max_rqst_sz
, args
->fc_attrs
.max_resp_sz
,
7836 args
->fc_attrs
.max_ops
, args
->fc_attrs
.max_reqs
);
7838 /* Back channel attributes */
7839 args
->bc_attrs
.max_rqst_sz
= max_bc_payload
;
7840 args
->bc_attrs
.max_resp_sz
= max_bc_payload
;
7841 args
->bc_attrs
.max_resp_sz_cached
= 0;
7842 args
->bc_attrs
.max_ops
= NFS4_MAX_BACK_CHANNEL_OPS
;
7843 args
->bc_attrs
.max_reqs
= min_t(unsigned short, max_session_cb_slots
, 1);
7845 dprintk("%s: Back Channel : max_rqst_sz=%u max_resp_sz=%u "
7846 "max_resp_sz_cached=%u max_ops=%u max_reqs=%u\n",
7848 args
->bc_attrs
.max_rqst_sz
, args
->bc_attrs
.max_resp_sz
,
7849 args
->bc_attrs
.max_resp_sz_cached
, args
->bc_attrs
.max_ops
,
7850 args
->bc_attrs
.max_reqs
);
7853 static int nfs4_verify_fore_channel_attrs(struct nfs41_create_session_args
*args
,
7854 struct nfs41_create_session_res
*res
)
7856 struct nfs4_channel_attrs
*sent
= &args
->fc_attrs
;
7857 struct nfs4_channel_attrs
*rcvd
= &res
->fc_attrs
;
7859 if (rcvd
->max_resp_sz
> sent
->max_resp_sz
)
7862 * Our requested max_ops is the minimum we need; we're not
7863 * prepared to break up compounds into smaller pieces than that.
7864 * So, no point even trying to continue if the server won't
7867 if (rcvd
->max_ops
< sent
->max_ops
)
7869 if (rcvd
->max_reqs
== 0)
7871 if (rcvd
->max_reqs
> NFS4_MAX_SLOT_TABLE
)
7872 rcvd
->max_reqs
= NFS4_MAX_SLOT_TABLE
;
7876 static int nfs4_verify_back_channel_attrs(struct nfs41_create_session_args
*args
,
7877 struct nfs41_create_session_res
*res
)
7879 struct nfs4_channel_attrs
*sent
= &args
->bc_attrs
;
7880 struct nfs4_channel_attrs
*rcvd
= &res
->bc_attrs
;
7882 if (!(res
->flags
& SESSION4_BACK_CHAN
))
7884 if (rcvd
->max_rqst_sz
> sent
->max_rqst_sz
)
7886 if (rcvd
->max_resp_sz
< sent
->max_resp_sz
)
7888 if (rcvd
->max_resp_sz_cached
> sent
->max_resp_sz_cached
)
7890 if (rcvd
->max_ops
> sent
->max_ops
)
7892 if (rcvd
->max_reqs
> sent
->max_reqs
)
7898 static int nfs4_verify_channel_attrs(struct nfs41_create_session_args
*args
,
7899 struct nfs41_create_session_res
*res
)
7903 ret
= nfs4_verify_fore_channel_attrs(args
, res
);
7906 return nfs4_verify_back_channel_attrs(args
, res
);
7909 static void nfs4_update_session(struct nfs4_session
*session
,
7910 struct nfs41_create_session_res
*res
)
7912 nfs4_copy_sessionid(&session
->sess_id
, &res
->sessionid
);
7913 /* Mark client id and session as being confirmed */
7914 session
->clp
->cl_exchange_flags
|= EXCHGID4_FLAG_CONFIRMED_R
;
7915 set_bit(NFS4_SESSION_ESTABLISHED
, &session
->session_state
);
7916 session
->flags
= res
->flags
;
7917 memcpy(&session
->fc_attrs
, &res
->fc_attrs
, sizeof(session
->fc_attrs
));
7918 if (res
->flags
& SESSION4_BACK_CHAN
)
7919 memcpy(&session
->bc_attrs
, &res
->bc_attrs
,
7920 sizeof(session
->bc_attrs
));
7923 static int _nfs4_proc_create_session(struct nfs_client
*clp
,
7924 struct rpc_cred
*cred
)
7926 struct nfs4_session
*session
= clp
->cl_session
;
7927 struct nfs41_create_session_args args
= {
7929 .clientid
= clp
->cl_clientid
,
7930 .seqid
= clp
->cl_seqid
,
7931 .cb_program
= NFS4_CALLBACK
,
7933 struct nfs41_create_session_res res
;
7935 struct rpc_message msg
= {
7936 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_CREATE_SESSION
],
7943 nfs4_init_channel_attrs(&args
, clp
->cl_rpcclient
);
7944 args
.flags
= (SESSION4_PERSIST
| SESSION4_BACK_CHAN
);
7946 status
= rpc_call_sync(session
->clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
7947 trace_nfs4_create_session(clp
, status
);
7950 case -NFS4ERR_STALE_CLIENTID
:
7951 case -NFS4ERR_DELAY
:
7960 /* Verify the session's negotiated channel_attrs values */
7961 status
= nfs4_verify_channel_attrs(&args
, &res
);
7962 /* Increment the clientid slot sequence id */
7965 nfs4_update_session(session
, &res
);
7972 * Issues a CREATE_SESSION operation to the server.
7973 * It is the responsibility of the caller to verify the session is
7974 * expired before calling this routine.
7976 int nfs4_proc_create_session(struct nfs_client
*clp
, struct rpc_cred
*cred
)
7980 struct nfs4_session
*session
= clp
->cl_session
;
7982 dprintk("--> %s clp=%p session=%p\n", __func__
, clp
, session
);
7984 status
= _nfs4_proc_create_session(clp
, cred
);
7988 /* Init or reset the session slot tables */
7989 status
= nfs4_setup_session_slot_tables(session
);
7990 dprintk("slot table setup returned %d\n", status
);
7994 ptr
= (unsigned *)&session
->sess_id
.data
[0];
7995 dprintk("%s client>seqid %d sessionid %u:%u:%u:%u\n", __func__
,
7996 clp
->cl_seqid
, ptr
[0], ptr
[1], ptr
[2], ptr
[3]);
7998 dprintk("<-- %s\n", __func__
);
8003 * Issue the over-the-wire RPC DESTROY_SESSION.
8004 * The caller must serialize access to this routine.
8006 int nfs4_proc_destroy_session(struct nfs4_session
*session
,
8007 struct rpc_cred
*cred
)
8009 struct rpc_message msg
= {
8010 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_DESTROY_SESSION
],
8011 .rpc_argp
= session
,
8016 dprintk("--> nfs4_proc_destroy_session\n");
8018 /* session is still being setup */
8019 if (!test_and_clear_bit(NFS4_SESSION_ESTABLISHED
, &session
->session_state
))
8022 status
= rpc_call_sync(session
->clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
8023 trace_nfs4_destroy_session(session
->clp
, status
);
8026 dprintk("NFS: Got error %d from the server on DESTROY_SESSION. "
8027 "Session has been destroyed regardless...\n", status
);
8029 dprintk("<-- nfs4_proc_destroy_session\n");
8034 * Renew the cl_session lease.
8036 struct nfs4_sequence_data
{
8037 struct nfs_client
*clp
;
8038 struct nfs4_sequence_args args
;
8039 struct nfs4_sequence_res res
;
8042 static void nfs41_sequence_release(void *data
)
8044 struct nfs4_sequence_data
*calldata
= data
;
8045 struct nfs_client
*clp
= calldata
->clp
;
8047 if (atomic_read(&clp
->cl_count
) > 1)
8048 nfs4_schedule_state_renewal(clp
);
8049 nfs_put_client(clp
);
8053 static int nfs41_sequence_handle_errors(struct rpc_task
*task
, struct nfs_client
*clp
)
8055 switch(task
->tk_status
) {
8056 case -NFS4ERR_DELAY
:
8057 rpc_delay(task
, NFS4_POLL_RETRY_MAX
);
8060 nfs4_schedule_lease_recovery(clp
);
8065 static void nfs41_sequence_call_done(struct rpc_task
*task
, void *data
)
8067 struct nfs4_sequence_data
*calldata
= data
;
8068 struct nfs_client
*clp
= calldata
->clp
;
8070 if (!nfs41_sequence_done(task
, task
->tk_msg
.rpc_resp
))
8073 trace_nfs4_sequence(clp
, task
->tk_status
);
8074 if (task
->tk_status
< 0) {
8075 dprintk("%s ERROR %d\n", __func__
, task
->tk_status
);
8076 if (atomic_read(&clp
->cl_count
) == 1)
8079 if (nfs41_sequence_handle_errors(task
, clp
) == -EAGAIN
) {
8080 rpc_restart_call_prepare(task
);
8084 dprintk("%s rpc_cred %p\n", __func__
, task
->tk_msg
.rpc_cred
);
8086 dprintk("<-- %s\n", __func__
);
8089 static void nfs41_sequence_prepare(struct rpc_task
*task
, void *data
)
8091 struct nfs4_sequence_data
*calldata
= data
;
8092 struct nfs_client
*clp
= calldata
->clp
;
8093 struct nfs4_sequence_args
*args
;
8094 struct nfs4_sequence_res
*res
;
8096 args
= task
->tk_msg
.rpc_argp
;
8097 res
= task
->tk_msg
.rpc_resp
;
8099 nfs4_setup_sequence(clp
, args
, res
, task
);
8102 static const struct rpc_call_ops nfs41_sequence_ops
= {
8103 .rpc_call_done
= nfs41_sequence_call_done
,
8104 .rpc_call_prepare
= nfs41_sequence_prepare
,
8105 .rpc_release
= nfs41_sequence_release
,
8108 static struct rpc_task
*_nfs41_proc_sequence(struct nfs_client
*clp
,
8109 struct rpc_cred
*cred
,
8112 struct nfs4_sequence_data
*calldata
;
8113 struct rpc_message msg
= {
8114 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SEQUENCE
],
8117 struct rpc_task_setup task_setup_data
= {
8118 .rpc_client
= clp
->cl_rpcclient
,
8119 .rpc_message
= &msg
,
8120 .callback_ops
= &nfs41_sequence_ops
,
8121 .flags
= RPC_TASK_ASYNC
| RPC_TASK_TIMEOUT
,
8124 if (!atomic_inc_not_zero(&clp
->cl_count
))
8125 return ERR_PTR(-EIO
);
8126 calldata
= kzalloc(sizeof(*calldata
), GFP_NOFS
);
8127 if (calldata
== NULL
) {
8128 nfs_put_client(clp
);
8129 return ERR_PTR(-ENOMEM
);
8131 nfs4_init_sequence(&calldata
->args
, &calldata
->res
, 0);
8133 nfs4_set_sequence_privileged(&calldata
->args
);
8134 msg
.rpc_argp
= &calldata
->args
;
8135 msg
.rpc_resp
= &calldata
->res
;
8136 calldata
->clp
= clp
;
8137 task_setup_data
.callback_data
= calldata
;
8139 return rpc_run_task(&task_setup_data
);
8142 static int nfs41_proc_async_sequence(struct nfs_client
*clp
, struct rpc_cred
*cred
, unsigned renew_flags
)
8144 struct rpc_task
*task
;
8147 if ((renew_flags
& NFS4_RENEW_TIMEOUT
) == 0)
8149 task
= _nfs41_proc_sequence(clp
, cred
, false);
8151 ret
= PTR_ERR(task
);
8153 rpc_put_task_async(task
);
8154 dprintk("<-- %s status=%d\n", __func__
, ret
);
8158 static int nfs4_proc_sequence(struct nfs_client
*clp
, struct rpc_cred
*cred
)
8160 struct rpc_task
*task
;
8163 task
= _nfs41_proc_sequence(clp
, cred
, true);
8165 ret
= PTR_ERR(task
);
8168 ret
= rpc_wait_for_completion_task(task
);
8170 ret
= task
->tk_status
;
8173 dprintk("<-- %s status=%d\n", __func__
, ret
);
8177 struct nfs4_reclaim_complete_data
{
8178 struct nfs_client
*clp
;
8179 struct nfs41_reclaim_complete_args arg
;
8180 struct nfs41_reclaim_complete_res res
;
8183 static void nfs4_reclaim_complete_prepare(struct rpc_task
*task
, void *data
)
8185 struct nfs4_reclaim_complete_data
*calldata
= data
;
8187 nfs4_setup_sequence(calldata
->clp
,
8188 &calldata
->arg
.seq_args
,
8189 &calldata
->res
.seq_res
,
8193 static int nfs41_reclaim_complete_handle_errors(struct rpc_task
*task
, struct nfs_client
*clp
)
8195 switch(task
->tk_status
) {
8197 case -NFS4ERR_COMPLETE_ALREADY
:
8198 case -NFS4ERR_WRONG_CRED
: /* What to do here? */
8200 case -NFS4ERR_DELAY
:
8201 rpc_delay(task
, NFS4_POLL_RETRY_MAX
);
8203 case -NFS4ERR_RETRY_UNCACHED_REP
:
8206 nfs4_schedule_lease_recovery(clp
);
8211 static void nfs4_reclaim_complete_done(struct rpc_task
*task
, void *data
)
8213 struct nfs4_reclaim_complete_data
*calldata
= data
;
8214 struct nfs_client
*clp
= calldata
->clp
;
8215 struct nfs4_sequence_res
*res
= &calldata
->res
.seq_res
;
8217 dprintk("--> %s\n", __func__
);
8218 if (!nfs41_sequence_done(task
, res
))
8221 trace_nfs4_reclaim_complete(clp
, task
->tk_status
);
8222 if (nfs41_reclaim_complete_handle_errors(task
, clp
) == -EAGAIN
) {
8223 rpc_restart_call_prepare(task
);
8226 dprintk("<-- %s\n", __func__
);
8229 static void nfs4_free_reclaim_complete_data(void *data
)
8231 struct nfs4_reclaim_complete_data
*calldata
= data
;
8236 static const struct rpc_call_ops nfs4_reclaim_complete_call_ops
= {
8237 .rpc_call_prepare
= nfs4_reclaim_complete_prepare
,
8238 .rpc_call_done
= nfs4_reclaim_complete_done
,
8239 .rpc_release
= nfs4_free_reclaim_complete_data
,
8243 * Issue a global reclaim complete.
8245 static int nfs41_proc_reclaim_complete(struct nfs_client
*clp
,
8246 struct rpc_cred
*cred
)
8248 struct nfs4_reclaim_complete_data
*calldata
;
8249 struct rpc_task
*task
;
8250 struct rpc_message msg
= {
8251 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RECLAIM_COMPLETE
],
8254 struct rpc_task_setup task_setup_data
= {
8255 .rpc_client
= clp
->cl_rpcclient
,
8256 .rpc_message
= &msg
,
8257 .callback_ops
= &nfs4_reclaim_complete_call_ops
,
8258 .flags
= RPC_TASK_ASYNC
,
8260 int status
= -ENOMEM
;
8262 dprintk("--> %s\n", __func__
);
8263 calldata
= kzalloc(sizeof(*calldata
), GFP_NOFS
);
8264 if (calldata
== NULL
)
8266 calldata
->clp
= clp
;
8267 calldata
->arg
.one_fs
= 0;
8269 nfs4_init_sequence(&calldata
->arg
.seq_args
, &calldata
->res
.seq_res
, 0);
8270 nfs4_set_sequence_privileged(&calldata
->arg
.seq_args
);
8271 msg
.rpc_argp
= &calldata
->arg
;
8272 msg
.rpc_resp
= &calldata
->res
;
8273 task_setup_data
.callback_data
= calldata
;
8274 task
= rpc_run_task(&task_setup_data
);
8276 status
= PTR_ERR(task
);
8279 status
= rpc_wait_for_completion_task(task
);
8281 status
= task
->tk_status
;
8285 dprintk("<-- %s status=%d\n", __func__
, status
);
8290 nfs4_layoutget_prepare(struct rpc_task
*task
, void *calldata
)
8292 struct nfs4_layoutget
*lgp
= calldata
;
8293 struct nfs_server
*server
= NFS_SERVER(lgp
->args
.inode
);
8295 dprintk("--> %s\n", __func__
);
8296 nfs4_setup_sequence(server
->nfs_client
, &lgp
->args
.seq_args
,
8297 &lgp
->res
.seq_res
, task
);
8298 dprintk("<-- %s\n", __func__
);
8301 static void nfs4_layoutget_done(struct rpc_task
*task
, void *calldata
)
8303 struct nfs4_layoutget
*lgp
= calldata
;
8305 dprintk("--> %s\n", __func__
);
8306 nfs41_sequence_process(task
, &lgp
->res
.seq_res
);
8307 dprintk("<-- %s\n", __func__
);
8311 nfs4_layoutget_handle_exception(struct rpc_task
*task
,
8312 struct nfs4_layoutget
*lgp
, struct nfs4_exception
*exception
)
8314 struct inode
*inode
= lgp
->args
.inode
;
8315 struct nfs_server
*server
= NFS_SERVER(inode
);
8316 struct pnfs_layout_hdr
*lo
;
8317 int nfs4err
= task
->tk_status
;
8318 int err
, status
= 0;
8321 dprintk("--> %s tk_status => %d\n", __func__
, -task
->tk_status
);
8328 * NFS4ERR_LAYOUTUNAVAILABLE means we are not supposed to use pnfs
8329 * on the file. set tk_status to -ENODATA to tell upper layer to
8332 case -NFS4ERR_LAYOUTUNAVAILABLE
:
8336 * NFS4ERR_BADLAYOUT means the MDS cannot return a layout of
8337 * length lgp->args.minlength != 0 (see RFC5661 section 18.43.3).
8339 case -NFS4ERR_BADLAYOUT
:
8340 status
= -EOVERFLOW
;
8343 * NFS4ERR_LAYOUTTRYLATER is a conflict with another client
8344 * (or clients) writing to the same RAID stripe except when
8345 * the minlength argument is 0 (see RFC5661 section 18.43.3).
8347 * Treat it like we would RECALLCONFLICT -- we retry for a little
8348 * while, and then eventually give up.
8350 case -NFS4ERR_LAYOUTTRYLATER
:
8351 if (lgp
->args
.minlength
== 0) {
8352 status
= -EOVERFLOW
;
8357 case -NFS4ERR_RECALLCONFLICT
:
8358 status
= -ERECALLCONFLICT
;
8360 case -NFS4ERR_DELEG_REVOKED
:
8361 case -NFS4ERR_ADMIN_REVOKED
:
8362 case -NFS4ERR_EXPIRED
:
8363 case -NFS4ERR_BAD_STATEID
:
8364 exception
->timeout
= 0;
8365 spin_lock(&inode
->i_lock
);
8366 lo
= NFS_I(inode
)->layout
;
8367 /* If the open stateid was bad, then recover it. */
8368 if (!lo
|| test_bit(NFS_LAYOUT_INVALID_STID
, &lo
->plh_flags
) ||
8369 nfs4_stateid_match_other(&lgp
->args
.stateid
,
8370 &lgp
->args
.ctx
->state
->stateid
)) {
8371 spin_unlock(&inode
->i_lock
);
8372 exception
->state
= lgp
->args
.ctx
->state
;
8373 exception
->stateid
= &lgp
->args
.stateid
;
8378 * Mark the bad layout state as invalid, then retry
8380 pnfs_mark_layout_stateid_invalid(lo
, &head
);
8381 spin_unlock(&inode
->i_lock
);
8382 pnfs_free_lseg_list(&head
);
8387 nfs4_sequence_free_slot(&lgp
->res
.seq_res
);
8388 err
= nfs4_handle_exception(server
, nfs4err
, exception
);
8390 if (exception
->retry
)
8396 dprintk("<-- %s\n", __func__
);
8400 static size_t max_response_pages(struct nfs_server
*server
)
8402 u32 max_resp_sz
= server
->nfs_client
->cl_session
->fc_attrs
.max_resp_sz
;
8403 return nfs_page_array_len(0, max_resp_sz
);
8406 static void nfs4_free_pages(struct page
**pages
, size_t size
)
8413 for (i
= 0; i
< size
; i
++) {
8416 __free_page(pages
[i
]);
8421 static struct page
**nfs4_alloc_pages(size_t size
, gfp_t gfp_flags
)
8423 struct page
**pages
;
8426 pages
= kcalloc(size
, sizeof(struct page
*), gfp_flags
);
8428 dprintk("%s: can't alloc array of %zu pages\n", __func__
, size
);
8432 for (i
= 0; i
< size
; i
++) {
8433 pages
[i
] = alloc_page(gfp_flags
);
8435 dprintk("%s: failed to allocate page\n", __func__
);
8436 nfs4_free_pages(pages
, size
);
8444 static void nfs4_layoutget_release(void *calldata
)
8446 struct nfs4_layoutget
*lgp
= calldata
;
8447 struct inode
*inode
= lgp
->args
.inode
;
8448 struct nfs_server
*server
= NFS_SERVER(inode
);
8449 size_t max_pages
= max_response_pages(server
);
8451 dprintk("--> %s\n", __func__
);
8452 nfs4_free_pages(lgp
->args
.layout
.pages
, max_pages
);
8453 pnfs_put_layout_hdr(NFS_I(inode
)->layout
);
8454 put_nfs_open_context(lgp
->args
.ctx
);
8456 dprintk("<-- %s\n", __func__
);
8459 static const struct rpc_call_ops nfs4_layoutget_call_ops
= {
8460 .rpc_call_prepare
= nfs4_layoutget_prepare
,
8461 .rpc_call_done
= nfs4_layoutget_done
,
8462 .rpc_release
= nfs4_layoutget_release
,
8465 struct pnfs_layout_segment
*
8466 nfs4_proc_layoutget(struct nfs4_layoutget
*lgp
, long *timeout
, gfp_t gfp_flags
)
8468 struct inode
*inode
= lgp
->args
.inode
;
8469 struct nfs_server
*server
= NFS_SERVER(inode
);
8470 size_t max_pages
= max_response_pages(server
);
8471 struct rpc_task
*task
;
8472 struct rpc_message msg
= {
8473 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LAYOUTGET
],
8474 .rpc_argp
= &lgp
->args
,
8475 .rpc_resp
= &lgp
->res
,
8476 .rpc_cred
= lgp
->cred
,
8478 struct rpc_task_setup task_setup_data
= {
8479 .rpc_client
= server
->client
,
8480 .rpc_message
= &msg
,
8481 .callback_ops
= &nfs4_layoutget_call_ops
,
8482 .callback_data
= lgp
,
8483 .flags
= RPC_TASK_ASYNC
,
8485 struct pnfs_layout_segment
*lseg
= NULL
;
8486 struct nfs4_exception exception
= {
8488 .timeout
= *timeout
,
8492 dprintk("--> %s\n", __func__
);
8494 /* nfs4_layoutget_release calls pnfs_put_layout_hdr */
8495 pnfs_get_layout_hdr(NFS_I(inode
)->layout
);
8497 lgp
->args
.layout
.pages
= nfs4_alloc_pages(max_pages
, gfp_flags
);
8498 if (!lgp
->args
.layout
.pages
) {
8499 nfs4_layoutget_release(lgp
);
8500 return ERR_PTR(-ENOMEM
);
8502 lgp
->args
.layout
.pglen
= max_pages
* PAGE_SIZE
;
8504 lgp
->res
.layoutp
= &lgp
->args
.layout
;
8505 lgp
->res
.seq_res
.sr_slot
= NULL
;
8506 nfs4_init_sequence(&lgp
->args
.seq_args
, &lgp
->res
.seq_res
, 0);
8508 task
= rpc_run_task(&task_setup_data
);
8510 return ERR_CAST(task
);
8511 status
= rpc_wait_for_completion_task(task
);
8513 status
= nfs4_layoutget_handle_exception(task
, lgp
, &exception
);
8514 *timeout
= exception
.timeout
;
8517 trace_nfs4_layoutget(lgp
->args
.ctx
,
8523 /* if layoutp->len is 0, nfs4_layoutget_prepare called rpc_exit */
8524 if (status
== 0 && lgp
->res
.layoutp
->len
)
8525 lseg
= pnfs_layout_process(lgp
);
8526 nfs4_sequence_free_slot(&lgp
->res
.seq_res
);
8528 dprintk("<-- %s status=%d\n", __func__
, status
);
8530 return ERR_PTR(status
);
8535 nfs4_layoutreturn_prepare(struct rpc_task
*task
, void *calldata
)
8537 struct nfs4_layoutreturn
*lrp
= calldata
;
8539 dprintk("--> %s\n", __func__
);
8540 nfs4_setup_sequence(lrp
->clp
,
8541 &lrp
->args
.seq_args
,
8546 static void nfs4_layoutreturn_done(struct rpc_task
*task
, void *calldata
)
8548 struct nfs4_layoutreturn
*lrp
= calldata
;
8549 struct nfs_server
*server
;
8551 dprintk("--> %s\n", __func__
);
8553 if (!nfs41_sequence_process(task
, &lrp
->res
.seq_res
))
8556 server
= NFS_SERVER(lrp
->args
.inode
);
8557 switch (task
->tk_status
) {
8559 task
->tk_status
= 0;
8562 case -NFS4ERR_DELAY
:
8563 if (nfs4_async_handle_error(task
, server
, NULL
, NULL
) != -EAGAIN
)
8565 nfs4_sequence_free_slot(&lrp
->res
.seq_res
);
8566 rpc_restart_call_prepare(task
);
8569 dprintk("<-- %s\n", __func__
);
8572 static void nfs4_layoutreturn_release(void *calldata
)
8574 struct nfs4_layoutreturn
*lrp
= calldata
;
8575 struct pnfs_layout_hdr
*lo
= lrp
->args
.layout
;
8577 dprintk("--> %s\n", __func__
);
8578 pnfs_layoutreturn_free_lsegs(lo
, &lrp
->args
.stateid
, &lrp
->args
.range
,
8579 lrp
->res
.lrs_present
? &lrp
->res
.stateid
: NULL
);
8580 nfs4_sequence_free_slot(&lrp
->res
.seq_res
);
8581 if (lrp
->ld_private
.ops
&& lrp
->ld_private
.ops
->free
)
8582 lrp
->ld_private
.ops
->free(&lrp
->ld_private
);
8583 pnfs_put_layout_hdr(lrp
->args
.layout
);
8584 nfs_iput_and_deactive(lrp
->inode
);
8586 dprintk("<-- %s\n", __func__
);
8589 static const struct rpc_call_ops nfs4_layoutreturn_call_ops
= {
8590 .rpc_call_prepare
= nfs4_layoutreturn_prepare
,
8591 .rpc_call_done
= nfs4_layoutreturn_done
,
8592 .rpc_release
= nfs4_layoutreturn_release
,
8595 int nfs4_proc_layoutreturn(struct nfs4_layoutreturn
*lrp
, bool sync
)
8597 struct rpc_task
*task
;
8598 struct rpc_message msg
= {
8599 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LAYOUTRETURN
],
8600 .rpc_argp
= &lrp
->args
,
8601 .rpc_resp
= &lrp
->res
,
8602 .rpc_cred
= lrp
->cred
,
8604 struct rpc_task_setup task_setup_data
= {
8605 .rpc_client
= NFS_SERVER(lrp
->args
.inode
)->client
,
8606 .rpc_message
= &msg
,
8607 .callback_ops
= &nfs4_layoutreturn_call_ops
,
8608 .callback_data
= lrp
,
8612 nfs4_state_protect(NFS_SERVER(lrp
->args
.inode
)->nfs_client
,
8613 NFS_SP4_MACH_CRED_PNFS_CLEANUP
,
8614 &task_setup_data
.rpc_client
, &msg
);
8616 dprintk("--> %s\n", __func__
);
8618 lrp
->inode
= nfs_igrab_and_active(lrp
->args
.inode
);
8620 nfs4_layoutreturn_release(lrp
);
8623 task_setup_data
.flags
|= RPC_TASK_ASYNC
;
8625 nfs4_init_sequence(&lrp
->args
.seq_args
, &lrp
->res
.seq_res
, 1);
8626 task
= rpc_run_task(&task_setup_data
);
8628 return PTR_ERR(task
);
8630 status
= task
->tk_status
;
8631 trace_nfs4_layoutreturn(lrp
->args
.inode
, &lrp
->args
.stateid
, status
);
8632 dprintk("<-- %s status=%d\n", __func__
, status
);
8638 _nfs4_proc_getdeviceinfo(struct nfs_server
*server
,
8639 struct pnfs_device
*pdev
,
8640 struct rpc_cred
*cred
)
8642 struct nfs4_getdeviceinfo_args args
= {
8644 .notify_types
= NOTIFY_DEVICEID4_CHANGE
|
8645 NOTIFY_DEVICEID4_DELETE
,
8647 struct nfs4_getdeviceinfo_res res
= {
8650 struct rpc_message msg
= {
8651 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GETDEVICEINFO
],
8658 dprintk("--> %s\n", __func__
);
8659 status
= nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
8660 if (res
.notification
& ~args
.notify_types
)
8661 dprintk("%s: unsupported notification\n", __func__
);
8662 if (res
.notification
!= args
.notify_types
)
8665 dprintk("<-- %s status=%d\n", __func__
, status
);
8670 int nfs4_proc_getdeviceinfo(struct nfs_server
*server
,
8671 struct pnfs_device
*pdev
,
8672 struct rpc_cred
*cred
)
8674 struct nfs4_exception exception
= { };
8678 err
= nfs4_handle_exception(server
,
8679 _nfs4_proc_getdeviceinfo(server
, pdev
, cred
),
8681 } while (exception
.retry
);
8684 EXPORT_SYMBOL_GPL(nfs4_proc_getdeviceinfo
);
8686 static void nfs4_layoutcommit_prepare(struct rpc_task
*task
, void *calldata
)
8688 struct nfs4_layoutcommit_data
*data
= calldata
;
8689 struct nfs_server
*server
= NFS_SERVER(data
->args
.inode
);
8691 nfs4_setup_sequence(server
->nfs_client
,
8692 &data
->args
.seq_args
,
8698 nfs4_layoutcommit_done(struct rpc_task
*task
, void *calldata
)
8700 struct nfs4_layoutcommit_data
*data
= calldata
;
8701 struct nfs_server
*server
= NFS_SERVER(data
->args
.inode
);
8703 if (!nfs41_sequence_done(task
, &data
->res
.seq_res
))
8706 switch (task
->tk_status
) { /* Just ignore these failures */
8707 case -NFS4ERR_DELEG_REVOKED
: /* layout was recalled */
8708 case -NFS4ERR_BADIOMODE
: /* no IOMODE_RW layout for range */
8709 case -NFS4ERR_BADLAYOUT
: /* no layout */
8710 case -NFS4ERR_GRACE
: /* loca_recalim always false */
8711 task
->tk_status
= 0;
8715 if (nfs4_async_handle_error(task
, server
, NULL
, NULL
) == -EAGAIN
) {
8716 rpc_restart_call_prepare(task
);
8722 static void nfs4_layoutcommit_release(void *calldata
)
8724 struct nfs4_layoutcommit_data
*data
= calldata
;
8726 pnfs_cleanup_layoutcommit(data
);
8727 nfs_post_op_update_inode_force_wcc(data
->args
.inode
,
8729 put_rpccred(data
->cred
);
8730 nfs_iput_and_deactive(data
->inode
);
8734 static const struct rpc_call_ops nfs4_layoutcommit_ops
= {
8735 .rpc_call_prepare
= nfs4_layoutcommit_prepare
,
8736 .rpc_call_done
= nfs4_layoutcommit_done
,
8737 .rpc_release
= nfs4_layoutcommit_release
,
8741 nfs4_proc_layoutcommit(struct nfs4_layoutcommit_data
*data
, bool sync
)
8743 struct rpc_message msg
= {
8744 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LAYOUTCOMMIT
],
8745 .rpc_argp
= &data
->args
,
8746 .rpc_resp
= &data
->res
,
8747 .rpc_cred
= data
->cred
,
8749 struct rpc_task_setup task_setup_data
= {
8750 .task
= &data
->task
,
8751 .rpc_client
= NFS_CLIENT(data
->args
.inode
),
8752 .rpc_message
= &msg
,
8753 .callback_ops
= &nfs4_layoutcommit_ops
,
8754 .callback_data
= data
,
8756 struct rpc_task
*task
;
8759 dprintk("NFS: initiating layoutcommit call. sync %d "
8760 "lbw: %llu inode %lu\n", sync
,
8761 data
->args
.lastbytewritten
,
8762 data
->args
.inode
->i_ino
);
8765 data
->inode
= nfs_igrab_and_active(data
->args
.inode
);
8766 if (data
->inode
== NULL
) {
8767 nfs4_layoutcommit_release(data
);
8770 task_setup_data
.flags
= RPC_TASK_ASYNC
;
8772 nfs4_init_sequence(&data
->args
.seq_args
, &data
->res
.seq_res
, 1);
8773 task
= rpc_run_task(&task_setup_data
);
8775 return PTR_ERR(task
);
8777 status
= task
->tk_status
;
8778 trace_nfs4_layoutcommit(data
->args
.inode
, &data
->args
.stateid
, status
);
8779 dprintk("%s: status %d\n", __func__
, status
);
8785 * Use the state managment nfs_client cl_rpcclient, which uses krb5i (if
8786 * possible) as per RFC3530bis and RFC5661 Security Considerations sections
8789 _nfs41_proc_secinfo_no_name(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
8790 struct nfs_fsinfo
*info
,
8791 struct nfs4_secinfo_flavors
*flavors
, bool use_integrity
)
8793 struct nfs41_secinfo_no_name_args args
= {
8794 .style
= SECINFO_STYLE_CURRENT_FH
,
8796 struct nfs4_secinfo_res res
= {
8799 struct rpc_message msg
= {
8800 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SECINFO_NO_NAME
],
8804 struct rpc_clnt
*clnt
= server
->client
;
8805 struct rpc_cred
*cred
= NULL
;
8808 if (use_integrity
) {
8809 clnt
= server
->nfs_client
->cl_rpcclient
;
8810 cred
= nfs4_get_clid_cred(server
->nfs_client
);
8811 msg
.rpc_cred
= cred
;
8814 dprintk("--> %s\n", __func__
);
8815 status
= nfs4_call_sync(clnt
, server
, &msg
, &args
.seq_args
,
8817 dprintk("<-- %s status=%d\n", __func__
, status
);
8826 nfs41_proc_secinfo_no_name(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
8827 struct nfs_fsinfo
*info
, struct nfs4_secinfo_flavors
*flavors
)
8829 struct nfs4_exception exception
= { };
8832 /* first try using integrity protection */
8833 err
= -NFS4ERR_WRONGSEC
;
8835 /* try to use integrity protection with machine cred */
8836 if (_nfs4_is_integrity_protected(server
->nfs_client
))
8837 err
= _nfs41_proc_secinfo_no_name(server
, fhandle
, info
,
8841 * if unable to use integrity protection, or SECINFO with
8842 * integrity protection returns NFS4ERR_WRONGSEC (which is
8843 * disallowed by spec, but exists in deployed servers) use
8844 * the current filesystem's rpc_client and the user cred.
8846 if (err
== -NFS4ERR_WRONGSEC
)
8847 err
= _nfs41_proc_secinfo_no_name(server
, fhandle
, info
,
8852 case -NFS4ERR_WRONGSEC
:
8856 err
= nfs4_handle_exception(server
, err
, &exception
);
8858 } while (exception
.retry
);
8864 nfs41_find_root_sec(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
8865 struct nfs_fsinfo
*info
)
8869 rpc_authflavor_t flavor
= RPC_AUTH_MAXFLAVOR
;
8870 struct nfs4_secinfo_flavors
*flavors
;
8871 struct nfs4_secinfo4
*secinfo
;
8874 page
= alloc_page(GFP_KERNEL
);
8880 flavors
= page_address(page
);
8881 err
= nfs41_proc_secinfo_no_name(server
, fhandle
, info
, flavors
);
8884 * Fall back on "guess and check" method if
8885 * the server doesn't support SECINFO_NO_NAME
8887 if (err
== -NFS4ERR_WRONGSEC
|| err
== -ENOTSUPP
) {
8888 err
= nfs4_find_root_sec(server
, fhandle
, info
);
8894 for (i
= 0; i
< flavors
->num_flavors
; i
++) {
8895 secinfo
= &flavors
->flavors
[i
];
8897 switch (secinfo
->flavor
) {
8901 flavor
= rpcauth_get_pseudoflavor(secinfo
->flavor
,
8902 &secinfo
->flavor_info
);
8905 flavor
= RPC_AUTH_MAXFLAVOR
;
8909 if (!nfs_auth_info_match(&server
->auth_info
, flavor
))
8910 flavor
= RPC_AUTH_MAXFLAVOR
;
8912 if (flavor
!= RPC_AUTH_MAXFLAVOR
) {
8913 err
= nfs4_lookup_root_sec(server
, fhandle
,
8920 if (flavor
== RPC_AUTH_MAXFLAVOR
)
8931 static int _nfs41_test_stateid(struct nfs_server
*server
,
8932 nfs4_stateid
*stateid
,
8933 struct rpc_cred
*cred
)
8936 struct nfs41_test_stateid_args args
= {
8939 struct nfs41_test_stateid_res res
;
8940 struct rpc_message msg
= {
8941 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_TEST_STATEID
],
8946 struct rpc_clnt
*rpc_client
= server
->client
;
8948 nfs4_state_protect(server
->nfs_client
, NFS_SP4_MACH_CRED_STATEID
,
8951 dprintk("NFS call test_stateid %p\n", stateid
);
8952 nfs4_init_sequence(&args
.seq_args
, &res
.seq_res
, 0);
8953 nfs4_set_sequence_privileged(&args
.seq_args
);
8954 status
= nfs4_call_sync_sequence(rpc_client
, server
, &msg
,
8955 &args
.seq_args
, &res
.seq_res
);
8956 if (status
!= NFS_OK
) {
8957 dprintk("NFS reply test_stateid: failed, %d\n", status
);
8960 dprintk("NFS reply test_stateid: succeeded, %d\n", -res
.status
);
8964 static void nfs4_handle_delay_or_session_error(struct nfs_server
*server
,
8965 int err
, struct nfs4_exception
*exception
)
8967 exception
->retry
= 0;
8969 case -NFS4ERR_DELAY
:
8970 case -NFS4ERR_RETRY_UNCACHED_REP
:
8971 nfs4_handle_exception(server
, err
, exception
);
8973 case -NFS4ERR_BADSESSION
:
8974 case -NFS4ERR_BADSLOT
:
8975 case -NFS4ERR_BAD_HIGH_SLOT
:
8976 case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION
:
8977 case -NFS4ERR_DEADSESSION
:
8978 nfs4_do_handle_exception(server
, err
, exception
);
8983 * nfs41_test_stateid - perform a TEST_STATEID operation
8985 * @server: server / transport on which to perform the operation
8986 * @stateid: state ID to test
8989 * Returns NFS_OK if the server recognizes that "stateid" is valid.
8990 * Otherwise a negative NFS4ERR value is returned if the operation
8991 * failed or the state ID is not currently valid.
8993 static int nfs41_test_stateid(struct nfs_server
*server
,
8994 nfs4_stateid
*stateid
,
8995 struct rpc_cred
*cred
)
8997 struct nfs4_exception exception
= { };
9000 err
= _nfs41_test_stateid(server
, stateid
, cred
);
9001 nfs4_handle_delay_or_session_error(server
, err
, &exception
);
9002 } while (exception
.retry
);
9006 struct nfs_free_stateid_data
{
9007 struct nfs_server
*server
;
9008 struct nfs41_free_stateid_args args
;
9009 struct nfs41_free_stateid_res res
;
9012 static void nfs41_free_stateid_prepare(struct rpc_task
*task
, void *calldata
)
9014 struct nfs_free_stateid_data
*data
= calldata
;
9015 nfs4_setup_sequence(data
->server
->nfs_client
,
9016 &data
->args
.seq_args
,
9021 static void nfs41_free_stateid_done(struct rpc_task
*task
, void *calldata
)
9023 struct nfs_free_stateid_data
*data
= calldata
;
9025 nfs41_sequence_done(task
, &data
->res
.seq_res
);
9027 switch (task
->tk_status
) {
9028 case -NFS4ERR_DELAY
:
9029 if (nfs4_async_handle_error(task
, data
->server
, NULL
, NULL
) == -EAGAIN
)
9030 rpc_restart_call_prepare(task
);
9034 static void nfs41_free_stateid_release(void *calldata
)
9039 static const struct rpc_call_ops nfs41_free_stateid_ops
= {
9040 .rpc_call_prepare
= nfs41_free_stateid_prepare
,
9041 .rpc_call_done
= nfs41_free_stateid_done
,
9042 .rpc_release
= nfs41_free_stateid_release
,
9045 static struct rpc_task
*_nfs41_free_stateid(struct nfs_server
*server
,
9046 const nfs4_stateid
*stateid
,
9047 struct rpc_cred
*cred
,
9050 struct rpc_message msg
= {
9051 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_FREE_STATEID
],
9054 struct rpc_task_setup task_setup
= {
9055 .rpc_client
= server
->client
,
9056 .rpc_message
= &msg
,
9057 .callback_ops
= &nfs41_free_stateid_ops
,
9058 .flags
= RPC_TASK_ASYNC
,
9060 struct nfs_free_stateid_data
*data
;
9062 nfs4_state_protect(server
->nfs_client
, NFS_SP4_MACH_CRED_STATEID
,
9063 &task_setup
.rpc_client
, &msg
);
9065 dprintk("NFS call free_stateid %p\n", stateid
);
9066 data
= kmalloc(sizeof(*data
), GFP_NOFS
);
9068 return ERR_PTR(-ENOMEM
);
9069 data
->server
= server
;
9070 nfs4_stateid_copy(&data
->args
.stateid
, stateid
);
9072 task_setup
.callback_data
= data
;
9074 msg
.rpc_argp
= &data
->args
;
9075 msg
.rpc_resp
= &data
->res
;
9076 nfs4_init_sequence(&data
->args
.seq_args
, &data
->res
.seq_res
, 1);
9078 nfs4_set_sequence_privileged(&data
->args
.seq_args
);
9080 return rpc_run_task(&task_setup
);
9084 * nfs41_free_stateid - perform a FREE_STATEID operation
9086 * @server: server / transport on which to perform the operation
9087 * @stateid: state ID to release
9089 * @is_recovery: set to true if this call needs to be privileged
9091 * Note: this function is always asynchronous.
9093 static int nfs41_free_stateid(struct nfs_server
*server
,
9094 const nfs4_stateid
*stateid
,
9095 struct rpc_cred
*cred
,
9098 struct rpc_task
*task
;
9100 task
= _nfs41_free_stateid(server
, stateid
, cred
, is_recovery
);
9102 return PTR_ERR(task
);
9108 nfs41_free_lock_state(struct nfs_server
*server
, struct nfs4_lock_state
*lsp
)
9110 struct rpc_cred
*cred
= lsp
->ls_state
->owner
->so_cred
;
9112 nfs41_free_stateid(server
, &lsp
->ls_stateid
, cred
, false);
9113 nfs4_free_lock_state(server
, lsp
);
9116 static bool nfs41_match_stateid(const nfs4_stateid
*s1
,
9117 const nfs4_stateid
*s2
)
9119 if (s1
->type
!= s2
->type
)
9122 if (memcmp(s1
->other
, s2
->other
, sizeof(s1
->other
)) != 0)
9125 if (s1
->seqid
== s2
->seqid
)
9127 if (s1
->seqid
== 0 || s2
->seqid
== 0)
9133 #endif /* CONFIG_NFS_V4_1 */
9135 static bool nfs4_match_stateid(const nfs4_stateid
*s1
,
9136 const nfs4_stateid
*s2
)
9138 return nfs4_stateid_match(s1
, s2
);
9142 static const struct nfs4_state_recovery_ops nfs40_reboot_recovery_ops
= {
9143 .owner_flag_bit
= NFS_OWNER_RECLAIM_REBOOT
,
9144 .state_flag_bit
= NFS_STATE_RECLAIM_REBOOT
,
9145 .recover_open
= nfs4_open_reclaim
,
9146 .recover_lock
= nfs4_lock_reclaim
,
9147 .establish_clid
= nfs4_init_clientid
,
9148 .detect_trunking
= nfs40_discover_server_trunking
,
9151 #if defined(CONFIG_NFS_V4_1)
9152 static const struct nfs4_state_recovery_ops nfs41_reboot_recovery_ops
= {
9153 .owner_flag_bit
= NFS_OWNER_RECLAIM_REBOOT
,
9154 .state_flag_bit
= NFS_STATE_RECLAIM_REBOOT
,
9155 .recover_open
= nfs4_open_reclaim
,
9156 .recover_lock
= nfs4_lock_reclaim
,
9157 .establish_clid
= nfs41_init_clientid
,
9158 .reclaim_complete
= nfs41_proc_reclaim_complete
,
9159 .detect_trunking
= nfs41_discover_server_trunking
,
9161 #endif /* CONFIG_NFS_V4_1 */
9163 static const struct nfs4_state_recovery_ops nfs40_nograce_recovery_ops
= {
9164 .owner_flag_bit
= NFS_OWNER_RECLAIM_NOGRACE
,
9165 .state_flag_bit
= NFS_STATE_RECLAIM_NOGRACE
,
9166 .recover_open
= nfs40_open_expired
,
9167 .recover_lock
= nfs4_lock_expired
,
9168 .establish_clid
= nfs4_init_clientid
,
9171 #if defined(CONFIG_NFS_V4_1)
9172 static const struct nfs4_state_recovery_ops nfs41_nograce_recovery_ops
= {
9173 .owner_flag_bit
= NFS_OWNER_RECLAIM_NOGRACE
,
9174 .state_flag_bit
= NFS_STATE_RECLAIM_NOGRACE
,
9175 .recover_open
= nfs41_open_expired
,
9176 .recover_lock
= nfs41_lock_expired
,
9177 .establish_clid
= nfs41_init_clientid
,
9179 #endif /* CONFIG_NFS_V4_1 */
9181 static const struct nfs4_state_maintenance_ops nfs40_state_renewal_ops
= {
9182 .sched_state_renewal
= nfs4_proc_async_renew
,
9183 .get_state_renewal_cred_locked
= nfs4_get_renew_cred_locked
,
9184 .renew_lease
= nfs4_proc_renew
,
9187 #if defined(CONFIG_NFS_V4_1)
9188 static const struct nfs4_state_maintenance_ops nfs41_state_renewal_ops
= {
9189 .sched_state_renewal
= nfs41_proc_async_sequence
,
9190 .get_state_renewal_cred_locked
= nfs4_get_machine_cred_locked
,
9191 .renew_lease
= nfs4_proc_sequence
,
9195 static const struct nfs4_mig_recovery_ops nfs40_mig_recovery_ops
= {
9196 .get_locations
= _nfs40_proc_get_locations
,
9197 .fsid_present
= _nfs40_proc_fsid_present
,
9200 #if defined(CONFIG_NFS_V4_1)
9201 static const struct nfs4_mig_recovery_ops nfs41_mig_recovery_ops
= {
9202 .get_locations
= _nfs41_proc_get_locations
,
9203 .fsid_present
= _nfs41_proc_fsid_present
,
9205 #endif /* CONFIG_NFS_V4_1 */
9207 static const struct nfs4_minor_version_ops nfs_v4_0_minor_ops
= {
9209 .init_caps
= NFS_CAP_READDIRPLUS
9210 | NFS_CAP_ATOMIC_OPEN
9211 | NFS_CAP_POSIX_LOCK
,
9212 .init_client
= nfs40_init_client
,
9213 .shutdown_client
= nfs40_shutdown_client
,
9214 .match_stateid
= nfs4_match_stateid
,
9215 .find_root_sec
= nfs4_find_root_sec
,
9216 .free_lock_state
= nfs4_release_lockowner
,
9217 .test_and_free_expired
= nfs40_test_and_free_expired_stateid
,
9218 .alloc_seqid
= nfs_alloc_seqid
,
9219 .call_sync_ops
= &nfs40_call_sync_ops
,
9220 .reboot_recovery_ops
= &nfs40_reboot_recovery_ops
,
9221 .nograce_recovery_ops
= &nfs40_nograce_recovery_ops
,
9222 .state_renewal_ops
= &nfs40_state_renewal_ops
,
9223 .mig_recovery_ops
= &nfs40_mig_recovery_ops
,
9226 #if defined(CONFIG_NFS_V4_1)
9227 static struct nfs_seqid
*
9228 nfs_alloc_no_seqid(struct nfs_seqid_counter
*arg1
, gfp_t arg2
)
9233 static const struct nfs4_minor_version_ops nfs_v4_1_minor_ops
= {
9235 .init_caps
= NFS_CAP_READDIRPLUS
9236 | NFS_CAP_ATOMIC_OPEN
9237 | NFS_CAP_POSIX_LOCK
9238 | NFS_CAP_STATEID_NFSV41
9239 | NFS_CAP_ATOMIC_OPEN_V1
,
9240 .init_client
= nfs41_init_client
,
9241 .shutdown_client
= nfs41_shutdown_client
,
9242 .match_stateid
= nfs41_match_stateid
,
9243 .find_root_sec
= nfs41_find_root_sec
,
9244 .free_lock_state
= nfs41_free_lock_state
,
9245 .test_and_free_expired
= nfs41_test_and_free_expired_stateid
,
9246 .alloc_seqid
= nfs_alloc_no_seqid
,
9247 .session_trunk
= nfs4_test_session_trunk
,
9248 .call_sync_ops
= &nfs41_call_sync_ops
,
9249 .reboot_recovery_ops
= &nfs41_reboot_recovery_ops
,
9250 .nograce_recovery_ops
= &nfs41_nograce_recovery_ops
,
9251 .state_renewal_ops
= &nfs41_state_renewal_ops
,
9252 .mig_recovery_ops
= &nfs41_mig_recovery_ops
,
9256 #if defined(CONFIG_NFS_V4_2)
9257 static const struct nfs4_minor_version_ops nfs_v4_2_minor_ops
= {
9259 .init_caps
= NFS_CAP_READDIRPLUS
9260 | NFS_CAP_ATOMIC_OPEN
9261 | NFS_CAP_POSIX_LOCK
9262 | NFS_CAP_STATEID_NFSV41
9263 | NFS_CAP_ATOMIC_OPEN_V1
9266 | NFS_CAP_DEALLOCATE
9268 | NFS_CAP_LAYOUTSTATS
9270 .init_client
= nfs41_init_client
,
9271 .shutdown_client
= nfs41_shutdown_client
,
9272 .match_stateid
= nfs41_match_stateid
,
9273 .find_root_sec
= nfs41_find_root_sec
,
9274 .free_lock_state
= nfs41_free_lock_state
,
9275 .call_sync_ops
= &nfs41_call_sync_ops
,
9276 .test_and_free_expired
= nfs41_test_and_free_expired_stateid
,
9277 .alloc_seqid
= nfs_alloc_no_seqid
,
9278 .session_trunk
= nfs4_test_session_trunk
,
9279 .reboot_recovery_ops
= &nfs41_reboot_recovery_ops
,
9280 .nograce_recovery_ops
= &nfs41_nograce_recovery_ops
,
9281 .state_renewal_ops
= &nfs41_state_renewal_ops
,
9282 .mig_recovery_ops
= &nfs41_mig_recovery_ops
,
9286 const struct nfs4_minor_version_ops
*nfs_v4_minor_ops
[] = {
9287 [0] = &nfs_v4_0_minor_ops
,
9288 #if defined(CONFIG_NFS_V4_1)
9289 [1] = &nfs_v4_1_minor_ops
,
9291 #if defined(CONFIG_NFS_V4_2)
9292 [2] = &nfs_v4_2_minor_ops
,
9296 static ssize_t
nfs4_listxattr(struct dentry
*dentry
, char *list
, size_t size
)
9298 ssize_t error
, error2
;
9300 error
= generic_listxattr(dentry
, list
, size
);
9308 error2
= nfs4_listxattr_nfs4_label(d_inode(dentry
), list
, size
);
9311 return error
+ error2
;
9314 static const struct inode_operations nfs4_dir_inode_operations
= {
9315 .create
= nfs_create
,
9316 .lookup
= nfs_lookup
,
9317 .atomic_open
= nfs_atomic_open
,
9319 .unlink
= nfs_unlink
,
9320 .symlink
= nfs_symlink
,
9324 .rename
= nfs_rename
,
9325 .permission
= nfs_permission
,
9326 .getattr
= nfs_getattr
,
9327 .setattr
= nfs_setattr
,
9328 .listxattr
= nfs4_listxattr
,
9331 static const struct inode_operations nfs4_file_inode_operations
= {
9332 .permission
= nfs_permission
,
9333 .getattr
= nfs_getattr
,
9334 .setattr
= nfs_setattr
,
9335 .listxattr
= nfs4_listxattr
,
9338 const struct nfs_rpc_ops nfs_v4_clientops
= {
9339 .version
= 4, /* protocol version */
9340 .dentry_ops
= &nfs4_dentry_operations
,
9341 .dir_inode_ops
= &nfs4_dir_inode_operations
,
9342 .file_inode_ops
= &nfs4_file_inode_operations
,
9343 .file_ops
= &nfs4_file_operations
,
9344 .getroot
= nfs4_proc_get_root
,
9345 .submount
= nfs4_submount
,
9346 .try_mount
= nfs4_try_mount
,
9347 .getattr
= nfs4_proc_getattr
,
9348 .setattr
= nfs4_proc_setattr
,
9349 .lookup
= nfs4_proc_lookup
,
9350 .access
= nfs4_proc_access
,
9351 .readlink
= nfs4_proc_readlink
,
9352 .create
= nfs4_proc_create
,
9353 .remove
= nfs4_proc_remove
,
9354 .unlink_setup
= nfs4_proc_unlink_setup
,
9355 .unlink_rpc_prepare
= nfs4_proc_unlink_rpc_prepare
,
9356 .unlink_done
= nfs4_proc_unlink_done
,
9357 .rename_setup
= nfs4_proc_rename_setup
,
9358 .rename_rpc_prepare
= nfs4_proc_rename_rpc_prepare
,
9359 .rename_done
= nfs4_proc_rename_done
,
9360 .link
= nfs4_proc_link
,
9361 .symlink
= nfs4_proc_symlink
,
9362 .mkdir
= nfs4_proc_mkdir
,
9363 .rmdir
= nfs4_proc_remove
,
9364 .readdir
= nfs4_proc_readdir
,
9365 .mknod
= nfs4_proc_mknod
,
9366 .statfs
= nfs4_proc_statfs
,
9367 .fsinfo
= nfs4_proc_fsinfo
,
9368 .pathconf
= nfs4_proc_pathconf
,
9369 .set_capabilities
= nfs4_server_capabilities
,
9370 .decode_dirent
= nfs4_decode_dirent
,
9371 .pgio_rpc_prepare
= nfs4_proc_pgio_rpc_prepare
,
9372 .read_setup
= nfs4_proc_read_setup
,
9373 .read_done
= nfs4_read_done
,
9374 .write_setup
= nfs4_proc_write_setup
,
9375 .write_done
= nfs4_write_done
,
9376 .commit_setup
= nfs4_proc_commit_setup
,
9377 .commit_rpc_prepare
= nfs4_proc_commit_rpc_prepare
,
9378 .commit_done
= nfs4_commit_done
,
9379 .lock
= nfs4_proc_lock
,
9380 .clear_acl_cache
= nfs4_zap_acl_attr
,
9381 .close_context
= nfs4_close_context
,
9382 .open_context
= nfs4_atomic_open
,
9383 .have_delegation
= nfs4_have_delegation
,
9384 .return_delegation
= nfs4_inode_return_delegation
,
9385 .alloc_client
= nfs4_alloc_client
,
9386 .init_client
= nfs4_init_client
,
9387 .free_client
= nfs4_free_client
,
9388 .create_server
= nfs4_create_server
,
9389 .clone_server
= nfs_clone_server
,
9392 static const struct xattr_handler nfs4_xattr_nfs4_acl_handler
= {
9393 .name
= XATTR_NAME_NFSV4_ACL
,
9394 .list
= nfs4_xattr_list_nfs4_acl
,
9395 .get
= nfs4_xattr_get_nfs4_acl
,
9396 .set
= nfs4_xattr_set_nfs4_acl
,
9399 const struct xattr_handler
*nfs4_xattr_handlers
[] = {
9400 &nfs4_xattr_nfs4_acl_handler
,
9401 #ifdef CONFIG_NFS_V4_SECURITY_LABEL
9402 &nfs4_xattr_nfs4_label_handler
,