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/file.h>
42 #include <linux/string.h>
43 #include <linux/ratelimit.h>
44 #include <linux/printk.h>
45 #include <linux/slab.h>
46 #include <linux/sunrpc/clnt.h>
47 #include <linux/nfs.h>
48 #include <linux/nfs4.h>
49 #include <linux/nfs_fs.h>
50 #include <linux/nfs_page.h>
51 #include <linux/nfs_mount.h>
52 #include <linux/namei.h>
53 #include <linux/mount.h>
54 #include <linux/module.h>
55 #include <linux/xattr.h>
56 #include <linux/utsname.h>
57 #include <linux/freezer.h>
60 #include "delegation.h"
66 #include "nfs4idmap.h"
67 #include "nfs4session.h"
70 #include "nfs4trace.h"
72 #define NFSDBG_FACILITY NFSDBG_PROC
74 #define NFS4_POLL_RETRY_MIN (HZ/10)
75 #define NFS4_POLL_RETRY_MAX (15*HZ)
77 /* file attributes which can be mapped to nfs attributes */
78 #define NFS4_VALID_ATTRS (ATTR_MODE \
89 static int _nfs4_proc_open(struct nfs4_opendata
*data
);
90 static int _nfs4_recover_proc_open(struct nfs4_opendata
*data
);
91 static int nfs4_do_fsinfo(struct nfs_server
*, struct nfs_fh
*, struct nfs_fsinfo
*);
92 static void nfs_fixup_referral_attributes(struct nfs_fattr
*fattr
);
93 static int nfs4_proc_getattr(struct nfs_server
*, struct nfs_fh
*, struct nfs_fattr
*, struct nfs4_label
*label
);
94 static int _nfs4_proc_getattr(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fattr
*fattr
, struct nfs4_label
*label
);
95 static int nfs4_do_setattr(struct inode
*inode
, struct rpc_cred
*cred
,
96 struct nfs_fattr
*fattr
, struct iattr
*sattr
,
97 struct nfs_open_context
*ctx
, struct nfs4_label
*ilabel
,
98 struct nfs4_label
*olabel
);
99 #ifdef CONFIG_NFS_V4_1
100 static int nfs41_test_stateid(struct nfs_server
*, nfs4_stateid
*,
102 static int nfs41_free_stateid(struct nfs_server
*, const nfs4_stateid
*,
103 struct rpc_cred
*, bool);
106 #ifdef CONFIG_NFS_V4_SECURITY_LABEL
107 static inline struct nfs4_label
*
108 nfs4_label_init_security(struct inode
*dir
, struct dentry
*dentry
,
109 struct iattr
*sattr
, struct nfs4_label
*label
)
116 if (nfs_server_capable(dir
, NFS_CAP_SECURITY_LABEL
) == 0)
119 err
= security_dentry_init_security(dentry
, sattr
->ia_mode
,
120 &dentry
->d_name
, (void **)&label
->label
, &label
->len
);
127 nfs4_label_release_security(struct nfs4_label
*label
)
130 security_release_secctx(label
->label
, label
->len
);
132 static inline u32
*nfs4_bitmask(struct nfs_server
*server
, struct nfs4_label
*label
)
135 return server
->attr_bitmask
;
137 return server
->attr_bitmask_nl
;
140 static inline struct nfs4_label
*
141 nfs4_label_init_security(struct inode
*dir
, struct dentry
*dentry
,
142 struct iattr
*sattr
, struct nfs4_label
*l
)
145 nfs4_label_release_security(struct nfs4_label
*label
)
148 nfs4_bitmask(struct nfs_server
*server
, struct nfs4_label
*label
)
149 { return server
->attr_bitmask
; }
152 /* Prevent leaks of NFSv4 errors into userland */
153 static int nfs4_map_errors(int err
)
158 case -NFS4ERR_RESOURCE
:
159 case -NFS4ERR_LAYOUTTRYLATER
:
160 case -NFS4ERR_RECALLCONFLICT
:
162 case -NFS4ERR_WRONGSEC
:
163 case -NFS4ERR_WRONG_CRED
:
165 case -NFS4ERR_BADOWNER
:
166 case -NFS4ERR_BADNAME
:
168 case -NFS4ERR_SHARE_DENIED
:
170 case -NFS4ERR_MINOR_VERS_MISMATCH
:
171 return -EPROTONOSUPPORT
;
172 case -NFS4ERR_FILE_OPEN
:
175 dprintk("%s could not handle NFSv4 error %d\n",
183 * This is our standard bitmap for GETATTR requests.
185 const u32 nfs4_fattr_bitmap
[3] = {
187 | FATTR4_WORD0_CHANGE
190 | FATTR4_WORD0_FILEID
,
192 | FATTR4_WORD1_NUMLINKS
194 | FATTR4_WORD1_OWNER_GROUP
195 | FATTR4_WORD1_RAWDEV
196 | FATTR4_WORD1_SPACE_USED
197 | FATTR4_WORD1_TIME_ACCESS
198 | FATTR4_WORD1_TIME_METADATA
199 | FATTR4_WORD1_TIME_MODIFY
200 | FATTR4_WORD1_MOUNTED_ON_FILEID
,
201 #ifdef CONFIG_NFS_V4_SECURITY_LABEL
202 FATTR4_WORD2_SECURITY_LABEL
206 static const u32 nfs4_pnfs_open_bitmap
[3] = {
208 | FATTR4_WORD0_CHANGE
211 | FATTR4_WORD0_FILEID
,
213 | FATTR4_WORD1_NUMLINKS
215 | FATTR4_WORD1_OWNER_GROUP
216 | FATTR4_WORD1_RAWDEV
217 | FATTR4_WORD1_SPACE_USED
218 | FATTR4_WORD1_TIME_ACCESS
219 | FATTR4_WORD1_TIME_METADATA
220 | FATTR4_WORD1_TIME_MODIFY
,
221 FATTR4_WORD2_MDSTHRESHOLD
222 #ifdef CONFIG_NFS_V4_SECURITY_LABEL
223 | FATTR4_WORD2_SECURITY_LABEL
227 static const u32 nfs4_open_noattr_bitmap
[3] = {
229 | FATTR4_WORD0_FILEID
,
232 const u32 nfs4_statfs_bitmap
[3] = {
233 FATTR4_WORD0_FILES_AVAIL
234 | FATTR4_WORD0_FILES_FREE
235 | FATTR4_WORD0_FILES_TOTAL
,
236 FATTR4_WORD1_SPACE_AVAIL
237 | FATTR4_WORD1_SPACE_FREE
238 | FATTR4_WORD1_SPACE_TOTAL
241 const u32 nfs4_pathconf_bitmap
[3] = {
243 | FATTR4_WORD0_MAXNAME
,
247 const u32 nfs4_fsinfo_bitmap
[3] = { FATTR4_WORD0_MAXFILESIZE
248 | FATTR4_WORD0_MAXREAD
249 | FATTR4_WORD0_MAXWRITE
250 | FATTR4_WORD0_LEASE_TIME
,
251 FATTR4_WORD1_TIME_DELTA
252 | FATTR4_WORD1_FS_LAYOUT_TYPES
,
253 FATTR4_WORD2_LAYOUT_BLKSIZE
254 | FATTR4_WORD2_CLONE_BLKSIZE
257 const u32 nfs4_fs_locations_bitmap
[3] = {
259 | FATTR4_WORD0_CHANGE
262 | FATTR4_WORD0_FILEID
263 | FATTR4_WORD0_FS_LOCATIONS
,
265 | FATTR4_WORD1_NUMLINKS
267 | FATTR4_WORD1_OWNER_GROUP
268 | FATTR4_WORD1_RAWDEV
269 | FATTR4_WORD1_SPACE_USED
270 | FATTR4_WORD1_TIME_ACCESS
271 | FATTR4_WORD1_TIME_METADATA
272 | FATTR4_WORD1_TIME_MODIFY
273 | FATTR4_WORD1_MOUNTED_ON_FILEID
,
276 static void nfs4_setup_readdir(u64 cookie
, __be32
*verifier
, struct dentry
*dentry
,
277 struct nfs4_readdir_arg
*readdir
)
282 readdir
->cookie
= cookie
;
283 memcpy(&readdir
->verifier
, verifier
, sizeof(readdir
->verifier
));
288 memset(&readdir
->verifier
, 0, sizeof(readdir
->verifier
));
293 * NFSv4 servers do not return entries for '.' and '..'
294 * Therefore, we fake these entries here. We let '.'
295 * have cookie 0 and '..' have cookie 1. Note that
296 * when talking to the server, we always send cookie 0
299 start
= p
= kmap_atomic(*readdir
->pages
);
302 *p
++ = xdr_one
; /* next */
303 *p
++ = xdr_zero
; /* cookie, first word */
304 *p
++ = xdr_one
; /* cookie, second word */
305 *p
++ = xdr_one
; /* entry len */
306 memcpy(p
, ".\0\0\0", 4); /* entry */
308 *p
++ = xdr_one
; /* bitmap length */
309 *p
++ = htonl(FATTR4_WORD0_FILEID
); /* bitmap */
310 *p
++ = htonl(8); /* attribute buffer length */
311 p
= xdr_encode_hyper(p
, NFS_FILEID(d_inode(dentry
)));
314 *p
++ = xdr_one
; /* next */
315 *p
++ = xdr_zero
; /* cookie, first word */
316 *p
++ = xdr_two
; /* cookie, second word */
317 *p
++ = xdr_two
; /* entry len */
318 memcpy(p
, "..\0\0", 4); /* entry */
320 *p
++ = xdr_one
; /* bitmap length */
321 *p
++ = htonl(FATTR4_WORD0_FILEID
); /* bitmap */
322 *p
++ = htonl(8); /* attribute buffer length */
323 p
= xdr_encode_hyper(p
, NFS_FILEID(d_inode(dentry
->d_parent
)));
325 readdir
->pgbase
= (char *)p
- (char *)start
;
326 readdir
->count
-= readdir
->pgbase
;
327 kunmap_atomic(start
);
330 static void nfs4_test_and_free_stateid(struct nfs_server
*server
,
331 nfs4_stateid
*stateid
,
332 struct rpc_cred
*cred
)
334 const struct nfs4_minor_version_ops
*ops
= server
->nfs_client
->cl_mvops
;
336 ops
->test_and_free_expired(server
, stateid
, cred
);
339 static void __nfs4_free_revoked_stateid(struct nfs_server
*server
,
340 nfs4_stateid
*stateid
,
341 struct rpc_cred
*cred
)
343 stateid
->type
= NFS4_REVOKED_STATEID_TYPE
;
344 nfs4_test_and_free_stateid(server
, stateid
, cred
);
347 static void nfs4_free_revoked_stateid(struct nfs_server
*server
,
348 const nfs4_stateid
*stateid
,
349 struct rpc_cred
*cred
)
353 nfs4_stateid_copy(&tmp
, stateid
);
354 __nfs4_free_revoked_stateid(server
, &tmp
, cred
);
357 static long nfs4_update_delay(long *timeout
)
361 return NFS4_POLL_RETRY_MAX
;
363 *timeout
= NFS4_POLL_RETRY_MIN
;
364 if (*timeout
> NFS4_POLL_RETRY_MAX
)
365 *timeout
= NFS4_POLL_RETRY_MAX
;
371 static int nfs4_delay(struct rpc_clnt
*clnt
, long *timeout
)
377 freezable_schedule_timeout_killable_unsafe(
378 nfs4_update_delay(timeout
));
379 if (fatal_signal_pending(current
))
384 /* This is the error handling routine for processes that are allowed
387 static int nfs4_do_handle_exception(struct nfs_server
*server
,
388 int errorcode
, struct nfs4_exception
*exception
)
390 struct nfs_client
*clp
= server
->nfs_client
;
391 struct nfs4_state
*state
= exception
->state
;
392 const nfs4_stateid
*stateid
= exception
->stateid
;
393 struct inode
*inode
= exception
->inode
;
396 exception
->delay
= 0;
397 exception
->recovering
= 0;
398 exception
->retry
= 0;
400 if (stateid
== NULL
&& state
!= NULL
)
401 stateid
= &state
->stateid
;
406 case -NFS4ERR_DELEG_REVOKED
:
407 case -NFS4ERR_ADMIN_REVOKED
:
408 case -NFS4ERR_EXPIRED
:
409 case -NFS4ERR_BAD_STATEID
:
410 if (inode
!= NULL
&& stateid
!= NULL
) {
411 nfs_inode_find_state_and_recover(inode
,
413 goto wait_on_recovery
;
415 case -NFS4ERR_OPENMODE
:
419 err
= nfs_async_inode_return_delegation(inode
,
422 goto wait_on_recovery
;
423 if (stateid
!= NULL
&& stateid
->type
== NFS4_DELEGATION_STATEID_TYPE
) {
424 exception
->retry
= 1;
430 ret
= nfs4_schedule_stateid_recovery(server
, state
);
433 goto wait_on_recovery
;
434 case -NFS4ERR_STALE_STATEID
:
435 case -NFS4ERR_STALE_CLIENTID
:
436 nfs4_schedule_lease_recovery(clp
);
437 goto wait_on_recovery
;
439 ret
= nfs4_schedule_migration_recovery(server
);
442 goto wait_on_recovery
;
443 case -NFS4ERR_LEASE_MOVED
:
444 nfs4_schedule_lease_moved_recovery(clp
);
445 goto wait_on_recovery
;
446 #if defined(CONFIG_NFS_V4_1)
447 case -NFS4ERR_BADSESSION
:
448 case -NFS4ERR_BADSLOT
:
449 case -NFS4ERR_BAD_HIGH_SLOT
:
450 case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION
:
451 case -NFS4ERR_DEADSESSION
:
452 case -NFS4ERR_SEQ_FALSE_RETRY
:
453 case -NFS4ERR_SEQ_MISORDERED
:
454 dprintk("%s ERROR: %d Reset session\n", __func__
,
456 nfs4_schedule_session_recovery(clp
->cl_session
, errorcode
);
457 goto wait_on_recovery
;
458 #endif /* defined(CONFIG_NFS_V4_1) */
459 case -NFS4ERR_FILE_OPEN
:
460 if (exception
->timeout
> HZ
) {
461 /* We have retried a decent amount, time to
468 nfs_inc_server_stats(server
, NFSIOS_DELAY
);
470 case -NFS4ERR_LAYOUTTRYLATER
:
471 case -NFS4ERR_RECALLCONFLICT
:
472 exception
->delay
= 1;
475 case -NFS4ERR_RETRY_UNCACHED_REP
:
476 case -NFS4ERR_OLD_STATEID
:
477 exception
->retry
= 1;
479 case -NFS4ERR_BADOWNER
:
480 /* The following works around a Linux server bug! */
481 case -NFS4ERR_BADNAME
:
482 if (server
->caps
& NFS_CAP_UIDGID_NOMAP
) {
483 server
->caps
&= ~NFS_CAP_UIDGID_NOMAP
;
484 exception
->retry
= 1;
485 printk(KERN_WARNING
"NFS: v4 server %s "
486 "does not accept raw "
488 "Reenabling the idmapper.\n",
489 server
->nfs_client
->cl_hostname
);
492 /* We failed to handle the error */
493 return nfs4_map_errors(ret
);
495 exception
->recovering
= 1;
499 /* This is the error handling routine for processes that are allowed
502 int nfs4_handle_exception(struct nfs_server
*server
, int errorcode
, struct nfs4_exception
*exception
)
504 struct nfs_client
*clp
= server
->nfs_client
;
507 ret
= nfs4_do_handle_exception(server
, errorcode
, exception
);
508 if (exception
->delay
) {
509 ret
= nfs4_delay(server
->client
, &exception
->timeout
);
512 if (exception
->recovering
) {
513 ret
= nfs4_wait_clnt_recover(clp
);
514 if (test_bit(NFS_MIG_FAILED
, &server
->mig_status
))
521 exception
->retry
= 1;
526 nfs4_async_handle_exception(struct rpc_task
*task
, struct nfs_server
*server
,
527 int errorcode
, struct nfs4_exception
*exception
)
529 struct nfs_client
*clp
= server
->nfs_client
;
532 ret
= nfs4_do_handle_exception(server
, errorcode
, exception
);
533 if (exception
->delay
) {
534 rpc_delay(task
, nfs4_update_delay(&exception
->timeout
));
537 if (exception
->recovering
) {
538 rpc_sleep_on(&clp
->cl_rpcwaitq
, task
, NULL
);
539 if (test_bit(NFS4CLNT_MANAGER_RUNNING
, &clp
->cl_state
) == 0)
540 rpc_wake_up_queued_task(&clp
->cl_rpcwaitq
, task
);
543 if (test_bit(NFS_MIG_FAILED
, &server
->mig_status
))
548 exception
->retry
= 1;
553 nfs4_async_handle_error(struct rpc_task
*task
, struct nfs_server
*server
,
554 struct nfs4_state
*state
, long *timeout
)
556 struct nfs4_exception exception
= {
560 if (task
->tk_status
>= 0)
563 exception
.timeout
= *timeout
;
564 task
->tk_status
= nfs4_async_handle_exception(task
, server
,
567 if (exception
.delay
&& timeout
)
568 *timeout
= exception
.timeout
;
575 * Return 'true' if 'clp' is using an rpc_client that is integrity protected
576 * or 'false' otherwise.
578 static bool _nfs4_is_integrity_protected(struct nfs_client
*clp
)
580 rpc_authflavor_t flavor
= clp
->cl_rpcclient
->cl_auth
->au_flavor
;
582 if (flavor
== RPC_AUTH_GSS_KRB5I
||
583 flavor
== RPC_AUTH_GSS_KRB5P
)
589 static void do_renew_lease(struct nfs_client
*clp
, unsigned long timestamp
)
591 spin_lock(&clp
->cl_lock
);
592 if (time_before(clp
->cl_last_renewal
,timestamp
))
593 clp
->cl_last_renewal
= timestamp
;
594 spin_unlock(&clp
->cl_lock
);
597 static void renew_lease(const struct nfs_server
*server
, unsigned long timestamp
)
599 struct nfs_client
*clp
= server
->nfs_client
;
601 if (!nfs4_has_session(clp
))
602 do_renew_lease(clp
, timestamp
);
605 struct nfs4_call_sync_data
{
606 const struct nfs_server
*seq_server
;
607 struct nfs4_sequence_args
*seq_args
;
608 struct nfs4_sequence_res
*seq_res
;
611 void nfs4_init_sequence(struct nfs4_sequence_args
*args
,
612 struct nfs4_sequence_res
*res
, int cache_reply
)
614 args
->sa_slot
= NULL
;
615 args
->sa_cache_this
= cache_reply
;
616 args
->sa_privileged
= 0;
621 static void nfs4_set_sequence_privileged(struct nfs4_sequence_args
*args
)
623 args
->sa_privileged
= 1;
626 int nfs40_setup_sequence(struct nfs4_slot_table
*tbl
,
627 struct nfs4_sequence_args
*args
,
628 struct nfs4_sequence_res
*res
,
629 struct rpc_task
*task
)
631 struct nfs4_slot
*slot
;
633 /* slot already allocated? */
634 if (res
->sr_slot
!= NULL
)
637 spin_lock(&tbl
->slot_tbl_lock
);
638 if (nfs4_slot_tbl_draining(tbl
) && !args
->sa_privileged
)
641 slot
= nfs4_alloc_slot(tbl
);
643 if (slot
== ERR_PTR(-ENOMEM
))
644 task
->tk_timeout
= HZ
>> 2;
647 spin_unlock(&tbl
->slot_tbl_lock
);
649 slot
->privileged
= args
->sa_privileged
? 1 : 0;
650 args
->sa_slot
= slot
;
654 rpc_call_start(task
);
658 if (args
->sa_privileged
)
659 rpc_sleep_on_priority(&tbl
->slot_tbl_waitq
, task
,
660 NULL
, RPC_PRIORITY_PRIVILEGED
);
662 rpc_sleep_on(&tbl
->slot_tbl_waitq
, task
, NULL
);
663 spin_unlock(&tbl
->slot_tbl_lock
);
666 EXPORT_SYMBOL_GPL(nfs40_setup_sequence
);
668 static void nfs40_sequence_free_slot(struct nfs4_sequence_res
*res
)
670 struct nfs4_slot
*slot
= res
->sr_slot
;
671 struct nfs4_slot_table
*tbl
;
674 spin_lock(&tbl
->slot_tbl_lock
);
675 if (!nfs41_wake_and_assign_slot(tbl
, slot
))
676 nfs4_free_slot(tbl
, slot
);
677 spin_unlock(&tbl
->slot_tbl_lock
);
682 static int nfs40_sequence_done(struct rpc_task
*task
,
683 struct nfs4_sequence_res
*res
)
685 if (res
->sr_slot
!= NULL
)
686 nfs40_sequence_free_slot(res
);
690 #if defined(CONFIG_NFS_V4_1)
692 static void nfs41_sequence_free_slot(struct nfs4_sequence_res
*res
)
694 struct nfs4_session
*session
;
695 struct nfs4_slot_table
*tbl
;
696 struct nfs4_slot
*slot
= res
->sr_slot
;
697 bool send_new_highest_used_slotid
= false;
700 session
= tbl
->session
;
702 /* Bump the slot sequence number */
707 spin_lock(&tbl
->slot_tbl_lock
);
708 /* Be nice to the server: try to ensure that the last transmitted
709 * value for highest_user_slotid <= target_highest_slotid
711 if (tbl
->highest_used_slotid
> tbl
->target_highest_slotid
)
712 send_new_highest_used_slotid
= true;
714 if (nfs41_wake_and_assign_slot(tbl
, slot
)) {
715 send_new_highest_used_slotid
= false;
718 nfs4_free_slot(tbl
, slot
);
720 if (tbl
->highest_used_slotid
!= NFS4_NO_SLOT
)
721 send_new_highest_used_slotid
= false;
723 spin_unlock(&tbl
->slot_tbl_lock
);
725 if (send_new_highest_used_slotid
)
726 nfs41_notify_server(session
->clp
);
727 if (waitqueue_active(&tbl
->slot_waitq
))
728 wake_up_all(&tbl
->slot_waitq
);
731 static int nfs41_sequence_process(struct rpc_task
*task
,
732 struct nfs4_sequence_res
*res
)
734 struct nfs4_session
*session
;
735 struct nfs4_slot
*slot
= res
->sr_slot
;
736 struct nfs_client
*clp
;
737 bool interrupted
= false;
742 /* don't increment the sequence number if the task wasn't sent */
743 if (!RPC_WAS_SENT(task
))
746 session
= slot
->table
->session
;
748 if (slot
->interrupted
) {
749 slot
->interrupted
= 0;
753 trace_nfs4_sequence_done(session
, res
);
754 /* Check the SEQUENCE operation status */
755 switch (res
->sr_status
) {
757 /* If previous op on slot was interrupted and we reused
758 * the seq# and got a reply from the cache, then retry
760 if (task
->tk_status
== -EREMOTEIO
&& interrupted
) {
764 /* Update the slot's sequence and clientid lease timer */
767 do_renew_lease(clp
, res
->sr_timestamp
);
768 /* Check sequence flags */
769 nfs41_handle_sequence_flag_errors(clp
, res
->sr_status_flags
,
771 nfs41_update_target_slotid(slot
->table
, slot
, res
);
775 * sr_status remains 1 if an RPC level error occurred.
776 * The server may or may not have processed the sequence
778 * Mark the slot as having hosted an interrupted RPC call.
780 slot
->interrupted
= 1;
783 /* The server detected a resend of the RPC call and
784 * returned NFS4ERR_DELAY as per Section 2.10.6.2
787 dprintk("%s: slot=%u seq=%u: Operation in progress\n",
792 case -NFS4ERR_BADSLOT
:
794 * The slot id we used was probably retired. Try again
795 * using a different slot id.
798 case -NFS4ERR_SEQ_MISORDERED
:
800 * Was the last operation on this sequence interrupted?
801 * If so, retry after bumping the sequence number.
808 * Could this slot have been previously retired?
809 * If so, then the server may be expecting seq_nr = 1!
811 if (slot
->seq_nr
!= 1) {
816 case -NFS4ERR_SEQ_FALSE_RETRY
:
819 case -NFS4ERR_DEADSESSION
:
820 case -NFS4ERR_BADSESSION
:
821 nfs4_schedule_session_recovery(session
, res
->sr_status
);
824 /* Just update the slot sequence no. */
828 /* The session may be reset by one of the error handlers. */
829 dprintk("%s: Error %d free the slot \n", __func__
, res
->sr_status
);
833 if (rpc_restart_call_prepare(task
)) {
834 nfs41_sequence_free_slot(res
);
840 if (!rpc_restart_call(task
))
842 rpc_delay(task
, NFS4_POLL_RETRY_MAX
);
846 int nfs41_sequence_done(struct rpc_task
*task
, struct nfs4_sequence_res
*res
)
848 if (!nfs41_sequence_process(task
, res
))
850 if (res
->sr_slot
!= NULL
)
851 nfs41_sequence_free_slot(res
);
855 EXPORT_SYMBOL_GPL(nfs41_sequence_done
);
857 static int nfs4_sequence_process(struct rpc_task
*task
, struct nfs4_sequence_res
*res
)
859 if (res
->sr_slot
== NULL
)
861 if (res
->sr_slot
->table
->session
!= NULL
)
862 return nfs41_sequence_process(task
, res
);
863 return nfs40_sequence_done(task
, res
);
866 static void nfs4_sequence_free_slot(struct nfs4_sequence_res
*res
)
868 if (res
->sr_slot
!= NULL
) {
869 if (res
->sr_slot
->table
->session
!= NULL
)
870 nfs41_sequence_free_slot(res
);
872 nfs40_sequence_free_slot(res
);
876 int nfs4_sequence_done(struct rpc_task
*task
, struct nfs4_sequence_res
*res
)
878 if (res
->sr_slot
== NULL
)
880 if (!res
->sr_slot
->table
->session
)
881 return nfs40_sequence_done(task
, res
);
882 return nfs41_sequence_done(task
, res
);
884 EXPORT_SYMBOL_GPL(nfs4_sequence_done
);
886 int nfs41_setup_sequence(struct nfs4_session
*session
,
887 struct nfs4_sequence_args
*args
,
888 struct nfs4_sequence_res
*res
,
889 struct rpc_task
*task
)
891 struct nfs4_slot
*slot
;
892 struct nfs4_slot_table
*tbl
;
894 dprintk("--> %s\n", __func__
);
895 /* slot already allocated? */
896 if (res
->sr_slot
!= NULL
)
899 tbl
= &session
->fc_slot_table
;
901 task
->tk_timeout
= 0;
903 spin_lock(&tbl
->slot_tbl_lock
);
904 if (test_bit(NFS4_SLOT_TBL_DRAINING
, &tbl
->slot_tbl_state
) &&
905 !args
->sa_privileged
) {
906 /* The state manager will wait until the slot table is empty */
907 dprintk("%s session is draining\n", __func__
);
911 slot
= nfs4_alloc_slot(tbl
);
913 /* If out of memory, try again in 1/4 second */
914 if (slot
== ERR_PTR(-ENOMEM
))
915 task
->tk_timeout
= HZ
>> 2;
916 dprintk("<-- %s: no free slots\n", __func__
);
919 spin_unlock(&tbl
->slot_tbl_lock
);
921 slot
->privileged
= args
->sa_privileged
? 1 : 0;
922 args
->sa_slot
= slot
;
924 dprintk("<-- %s slotid=%u seqid=%u\n", __func__
,
925 slot
->slot_nr
, slot
->seq_nr
);
928 res
->sr_timestamp
= jiffies
;
929 res
->sr_status_flags
= 0;
931 * sr_status is only set in decode_sequence, and so will remain
932 * set to 1 if an rpc level failure occurs.
935 trace_nfs4_setup_sequence(session
, args
);
937 rpc_call_start(task
);
940 /* Privileged tasks are queued with top priority */
941 if (args
->sa_privileged
)
942 rpc_sleep_on_priority(&tbl
->slot_tbl_waitq
, task
,
943 NULL
, RPC_PRIORITY_PRIVILEGED
);
945 rpc_sleep_on(&tbl
->slot_tbl_waitq
, task
, NULL
);
946 spin_unlock(&tbl
->slot_tbl_lock
);
949 EXPORT_SYMBOL_GPL(nfs41_setup_sequence
);
951 static int nfs4_setup_sequence(const struct nfs_server
*server
,
952 struct nfs4_sequence_args
*args
,
953 struct nfs4_sequence_res
*res
,
954 struct rpc_task
*task
)
956 struct nfs4_session
*session
= nfs4_get_session(server
);
960 return nfs40_setup_sequence(server
->nfs_client
->cl_slot_tbl
,
963 dprintk("--> %s clp %p session %p sr_slot %u\n",
964 __func__
, session
->clp
, session
, res
->sr_slot
?
965 res
->sr_slot
->slot_nr
: NFS4_NO_SLOT
);
967 ret
= nfs41_setup_sequence(session
, args
, res
, task
);
969 dprintk("<-- %s status=%d\n", __func__
, ret
);
973 static void nfs41_call_sync_prepare(struct rpc_task
*task
, void *calldata
)
975 struct nfs4_call_sync_data
*data
= calldata
;
976 struct nfs4_session
*session
= nfs4_get_session(data
->seq_server
);
978 dprintk("--> %s data->seq_server %p\n", __func__
, data
->seq_server
);
980 nfs41_setup_sequence(session
, data
->seq_args
, data
->seq_res
, task
);
983 static void nfs41_call_sync_done(struct rpc_task
*task
, void *calldata
)
985 struct nfs4_call_sync_data
*data
= calldata
;
987 nfs41_sequence_done(task
, data
->seq_res
);
990 static const struct rpc_call_ops nfs41_call_sync_ops
= {
991 .rpc_call_prepare
= nfs41_call_sync_prepare
,
992 .rpc_call_done
= nfs41_call_sync_done
,
995 #else /* !CONFIG_NFS_V4_1 */
997 static int nfs4_setup_sequence(const struct nfs_server
*server
,
998 struct nfs4_sequence_args
*args
,
999 struct nfs4_sequence_res
*res
,
1000 struct rpc_task
*task
)
1002 return nfs40_setup_sequence(server
->nfs_client
->cl_slot_tbl
,
1006 static int nfs4_sequence_process(struct rpc_task
*task
, struct nfs4_sequence_res
*res
)
1008 return nfs40_sequence_done(task
, res
);
1011 static void nfs4_sequence_free_slot(struct nfs4_sequence_res
*res
)
1013 if (res
->sr_slot
!= NULL
)
1014 nfs40_sequence_free_slot(res
);
1017 int nfs4_sequence_done(struct rpc_task
*task
,
1018 struct nfs4_sequence_res
*res
)
1020 return nfs40_sequence_done(task
, res
);
1022 EXPORT_SYMBOL_GPL(nfs4_sequence_done
);
1024 #endif /* !CONFIG_NFS_V4_1 */
1026 static void nfs40_call_sync_prepare(struct rpc_task
*task
, void *calldata
)
1028 struct nfs4_call_sync_data
*data
= calldata
;
1029 nfs4_setup_sequence(data
->seq_server
,
1030 data
->seq_args
, data
->seq_res
, task
);
1033 static void nfs40_call_sync_done(struct rpc_task
*task
, void *calldata
)
1035 struct nfs4_call_sync_data
*data
= calldata
;
1036 nfs4_sequence_done(task
, data
->seq_res
);
1039 static const struct rpc_call_ops nfs40_call_sync_ops
= {
1040 .rpc_call_prepare
= nfs40_call_sync_prepare
,
1041 .rpc_call_done
= nfs40_call_sync_done
,
1044 static int nfs4_call_sync_sequence(struct rpc_clnt
*clnt
,
1045 struct nfs_server
*server
,
1046 struct rpc_message
*msg
,
1047 struct nfs4_sequence_args
*args
,
1048 struct nfs4_sequence_res
*res
)
1051 struct rpc_task
*task
;
1052 struct nfs_client
*clp
= server
->nfs_client
;
1053 struct nfs4_call_sync_data data
= {
1054 .seq_server
= server
,
1058 struct rpc_task_setup task_setup
= {
1061 .callback_ops
= clp
->cl_mvops
->call_sync_ops
,
1062 .callback_data
= &data
1065 task
= rpc_run_task(&task_setup
);
1067 ret
= PTR_ERR(task
);
1069 ret
= task
->tk_status
;
1075 int nfs4_call_sync(struct rpc_clnt
*clnt
,
1076 struct nfs_server
*server
,
1077 struct rpc_message
*msg
,
1078 struct nfs4_sequence_args
*args
,
1079 struct nfs4_sequence_res
*res
,
1082 nfs4_init_sequence(args
, res
, cache_reply
);
1083 return nfs4_call_sync_sequence(clnt
, server
, msg
, args
, res
);
1086 static void update_changeattr(struct inode
*dir
, struct nfs4_change_info
*cinfo
)
1088 struct nfs_inode
*nfsi
= NFS_I(dir
);
1090 spin_lock(&dir
->i_lock
);
1091 nfsi
->cache_validity
|= NFS_INO_INVALID_ATTR
|NFS_INO_INVALID_DATA
;
1092 if (!cinfo
->atomic
|| cinfo
->before
!= dir
->i_version
)
1093 nfs_force_lookup_revalidate(dir
);
1094 dir
->i_version
= cinfo
->after
;
1095 nfsi
->attr_gencount
= nfs_inc_attr_generation_counter();
1096 nfs_fscache_invalidate(dir
);
1097 spin_unlock(&dir
->i_lock
);
1100 struct nfs4_opendata
{
1102 struct nfs_openargs o_arg
;
1103 struct nfs_openres o_res
;
1104 struct nfs_open_confirmargs c_arg
;
1105 struct nfs_open_confirmres c_res
;
1106 struct nfs4_string owner_name
;
1107 struct nfs4_string group_name
;
1108 struct nfs4_label
*a_label
;
1109 struct nfs_fattr f_attr
;
1110 struct nfs4_label
*f_label
;
1112 struct dentry
*dentry
;
1113 struct nfs4_state_owner
*owner
;
1114 struct nfs4_state
*state
;
1116 unsigned long timestamp
;
1117 unsigned int rpc_done
: 1;
1118 unsigned int file_created
: 1;
1119 unsigned int is_recover
: 1;
1124 static bool nfs4_clear_cap_atomic_open_v1(struct nfs_server
*server
,
1125 int err
, struct nfs4_exception
*exception
)
1129 if (!(server
->caps
& NFS_CAP_ATOMIC_OPEN_V1
))
1131 server
->caps
&= ~NFS_CAP_ATOMIC_OPEN_V1
;
1132 exception
->retry
= 1;
1137 nfs4_map_atomic_open_share(struct nfs_server
*server
,
1138 fmode_t fmode
, int openflags
)
1142 switch (fmode
& (FMODE_READ
| FMODE_WRITE
)) {
1144 res
= NFS4_SHARE_ACCESS_READ
;
1147 res
= NFS4_SHARE_ACCESS_WRITE
;
1149 case FMODE_READ
|FMODE_WRITE
:
1150 res
= NFS4_SHARE_ACCESS_BOTH
;
1152 if (!(server
->caps
& NFS_CAP_ATOMIC_OPEN_V1
))
1154 /* Want no delegation if we're using O_DIRECT */
1155 if (openflags
& O_DIRECT
)
1156 res
|= NFS4_SHARE_WANT_NO_DELEG
;
1161 static enum open_claim_type4
1162 nfs4_map_atomic_open_claim(struct nfs_server
*server
,
1163 enum open_claim_type4 claim
)
1165 if (server
->caps
& NFS_CAP_ATOMIC_OPEN_V1
)
1170 case NFS4_OPEN_CLAIM_FH
:
1171 return NFS4_OPEN_CLAIM_NULL
;
1172 case NFS4_OPEN_CLAIM_DELEG_CUR_FH
:
1173 return NFS4_OPEN_CLAIM_DELEGATE_CUR
;
1174 case NFS4_OPEN_CLAIM_DELEG_PREV_FH
:
1175 return NFS4_OPEN_CLAIM_DELEGATE_PREV
;
1179 static void nfs4_init_opendata_res(struct nfs4_opendata
*p
)
1181 p
->o_res
.f_attr
= &p
->f_attr
;
1182 p
->o_res
.f_label
= p
->f_label
;
1183 p
->o_res
.seqid
= p
->o_arg
.seqid
;
1184 p
->c_res
.seqid
= p
->c_arg
.seqid
;
1185 p
->o_res
.server
= p
->o_arg
.server
;
1186 p
->o_res
.access_request
= p
->o_arg
.access
;
1187 nfs_fattr_init(&p
->f_attr
);
1188 nfs_fattr_init_names(&p
->f_attr
, &p
->owner_name
, &p
->group_name
);
1191 static struct nfs4_opendata
*nfs4_opendata_alloc(struct dentry
*dentry
,
1192 struct nfs4_state_owner
*sp
, fmode_t fmode
, int flags
,
1193 const struct iattr
*attrs
,
1194 struct nfs4_label
*label
,
1195 enum open_claim_type4 claim
,
1198 struct dentry
*parent
= dget_parent(dentry
);
1199 struct inode
*dir
= d_inode(parent
);
1200 struct nfs_server
*server
= NFS_SERVER(dir
);
1201 struct nfs_seqid
*(*alloc_seqid
)(struct nfs_seqid_counter
*, gfp_t
);
1202 struct nfs4_opendata
*p
;
1204 p
= kzalloc(sizeof(*p
), gfp_mask
);
1208 p
->f_label
= nfs4_label_alloc(server
, gfp_mask
);
1209 if (IS_ERR(p
->f_label
))
1212 p
->a_label
= nfs4_label_alloc(server
, gfp_mask
);
1213 if (IS_ERR(p
->a_label
))
1216 alloc_seqid
= server
->nfs_client
->cl_mvops
->alloc_seqid
;
1217 p
->o_arg
.seqid
= alloc_seqid(&sp
->so_seqid
, gfp_mask
);
1218 if (IS_ERR(p
->o_arg
.seqid
))
1219 goto err_free_label
;
1220 nfs_sb_active(dentry
->d_sb
);
1221 p
->dentry
= dget(dentry
);
1224 atomic_inc(&sp
->so_count
);
1225 p
->o_arg
.open_flags
= flags
;
1226 p
->o_arg
.fmode
= fmode
& (FMODE_READ
|FMODE_WRITE
);
1227 p
->o_arg
.umask
= current_umask();
1228 p
->o_arg
.claim
= nfs4_map_atomic_open_claim(server
, claim
);
1229 p
->o_arg
.share_access
= nfs4_map_atomic_open_share(server
,
1231 /* don't put an ACCESS op in OPEN compound if O_EXCL, because ACCESS
1232 * will return permission denied for all bits until close */
1233 if (!(flags
& O_EXCL
)) {
1234 /* ask server to check for all possible rights as results
1236 switch (p
->o_arg
.claim
) {
1239 case NFS4_OPEN_CLAIM_NULL
:
1240 case NFS4_OPEN_CLAIM_FH
:
1241 p
->o_arg
.access
= NFS4_ACCESS_READ
|
1242 NFS4_ACCESS_MODIFY
|
1243 NFS4_ACCESS_EXTEND
|
1244 NFS4_ACCESS_EXECUTE
;
1247 p
->o_arg
.clientid
= server
->nfs_client
->cl_clientid
;
1248 p
->o_arg
.id
.create_time
= ktime_to_ns(sp
->so_seqid
.create_time
);
1249 p
->o_arg
.id
.uniquifier
= sp
->so_seqid
.owner_id
;
1250 p
->o_arg
.name
= &dentry
->d_name
;
1251 p
->o_arg
.server
= server
;
1252 p
->o_arg
.bitmask
= nfs4_bitmask(server
, label
);
1253 p
->o_arg
.open_bitmap
= &nfs4_fattr_bitmap
[0];
1254 p
->o_arg
.label
= nfs4_label_copy(p
->a_label
, label
);
1255 switch (p
->o_arg
.claim
) {
1256 case NFS4_OPEN_CLAIM_NULL
:
1257 case NFS4_OPEN_CLAIM_DELEGATE_CUR
:
1258 case NFS4_OPEN_CLAIM_DELEGATE_PREV
:
1259 p
->o_arg
.fh
= NFS_FH(dir
);
1261 case NFS4_OPEN_CLAIM_PREVIOUS
:
1262 case NFS4_OPEN_CLAIM_FH
:
1263 case NFS4_OPEN_CLAIM_DELEG_CUR_FH
:
1264 case NFS4_OPEN_CLAIM_DELEG_PREV_FH
:
1265 p
->o_arg
.fh
= NFS_FH(d_inode(dentry
));
1267 if (attrs
!= NULL
&& attrs
->ia_valid
!= 0) {
1270 p
->o_arg
.u
.attrs
= &p
->attrs
;
1271 memcpy(&p
->attrs
, attrs
, sizeof(p
->attrs
));
1274 verf
[1] = current
->pid
;
1275 memcpy(p
->o_arg
.u
.verifier
.data
, verf
,
1276 sizeof(p
->o_arg
.u
.verifier
.data
));
1278 p
->c_arg
.fh
= &p
->o_res
.fh
;
1279 p
->c_arg
.stateid
= &p
->o_res
.stateid
;
1280 p
->c_arg
.seqid
= p
->o_arg
.seqid
;
1281 nfs4_init_opendata_res(p
);
1282 kref_init(&p
->kref
);
1286 nfs4_label_free(p
->a_label
);
1288 nfs4_label_free(p
->f_label
);
1296 static void nfs4_opendata_free(struct kref
*kref
)
1298 struct nfs4_opendata
*p
= container_of(kref
,
1299 struct nfs4_opendata
, kref
);
1300 struct super_block
*sb
= p
->dentry
->d_sb
;
1302 nfs_free_seqid(p
->o_arg
.seqid
);
1303 nfs4_sequence_free_slot(&p
->o_res
.seq_res
);
1304 if (p
->state
!= NULL
)
1305 nfs4_put_open_state(p
->state
);
1306 nfs4_put_state_owner(p
->owner
);
1308 nfs4_label_free(p
->a_label
);
1309 nfs4_label_free(p
->f_label
);
1313 nfs_sb_deactive(sb
);
1314 nfs_fattr_free_names(&p
->f_attr
);
1315 kfree(p
->f_attr
.mdsthreshold
);
1319 static void nfs4_opendata_put(struct nfs4_opendata
*p
)
1322 kref_put(&p
->kref
, nfs4_opendata_free
);
1325 static int nfs4_wait_for_completion_rpc_task(struct rpc_task
*task
)
1329 ret
= rpc_wait_for_completion_task(task
);
1333 static bool nfs4_mode_match_open_stateid(struct nfs4_state
*state
,
1336 switch(fmode
& (FMODE_READ
|FMODE_WRITE
)) {
1337 case FMODE_READ
|FMODE_WRITE
:
1338 return state
->n_rdwr
!= 0;
1340 return state
->n_wronly
!= 0;
1342 return state
->n_rdonly
!= 0;
1348 static int can_open_cached(struct nfs4_state
*state
, fmode_t mode
, int open_mode
)
1352 if (open_mode
& (O_EXCL
|O_TRUNC
))
1354 switch (mode
& (FMODE_READ
|FMODE_WRITE
)) {
1356 ret
|= test_bit(NFS_O_RDONLY_STATE
, &state
->flags
) != 0
1357 && state
->n_rdonly
!= 0;
1360 ret
|= test_bit(NFS_O_WRONLY_STATE
, &state
->flags
) != 0
1361 && state
->n_wronly
!= 0;
1363 case FMODE_READ
|FMODE_WRITE
:
1364 ret
|= test_bit(NFS_O_RDWR_STATE
, &state
->flags
) != 0
1365 && state
->n_rdwr
!= 0;
1371 static int can_open_delegated(struct nfs_delegation
*delegation
, fmode_t fmode
,
1372 enum open_claim_type4 claim
)
1374 if (delegation
== NULL
)
1376 if ((delegation
->type
& fmode
) != fmode
)
1378 if (test_bit(NFS_DELEGATION_RETURNING
, &delegation
->flags
))
1381 case NFS4_OPEN_CLAIM_NULL
:
1382 case NFS4_OPEN_CLAIM_FH
:
1384 case NFS4_OPEN_CLAIM_PREVIOUS
:
1385 if (!test_bit(NFS_DELEGATION_NEED_RECLAIM
, &delegation
->flags
))
1390 nfs_mark_delegation_referenced(delegation
);
1394 static void update_open_stateflags(struct nfs4_state
*state
, fmode_t fmode
)
1403 case FMODE_READ
|FMODE_WRITE
:
1406 nfs4_state_set_mode_locked(state
, state
->state
| fmode
);
1409 #ifdef CONFIG_NFS_V4_1
1410 static bool nfs_open_stateid_recover_openmode(struct nfs4_state
*state
)
1412 if (state
->n_rdonly
&& !test_bit(NFS_O_RDONLY_STATE
, &state
->flags
))
1414 if (state
->n_wronly
&& !test_bit(NFS_O_WRONLY_STATE
, &state
->flags
))
1416 if (state
->n_rdwr
&& !test_bit(NFS_O_RDWR_STATE
, &state
->flags
))
1420 #endif /* CONFIG_NFS_V4_1 */
1422 static void nfs_test_and_clear_all_open_stateid(struct nfs4_state
*state
)
1424 struct nfs_client
*clp
= state
->owner
->so_server
->nfs_client
;
1425 bool need_recover
= false;
1427 if (test_and_clear_bit(NFS_O_RDONLY_STATE
, &state
->flags
) && state
->n_rdonly
)
1428 need_recover
= true;
1429 if (test_and_clear_bit(NFS_O_WRONLY_STATE
, &state
->flags
) && state
->n_wronly
)
1430 need_recover
= true;
1431 if (test_and_clear_bit(NFS_O_RDWR_STATE
, &state
->flags
) && state
->n_rdwr
)
1432 need_recover
= true;
1434 nfs4_state_mark_reclaim_nograce(clp
, state
);
1437 static bool nfs_need_update_open_stateid(struct nfs4_state
*state
,
1438 const nfs4_stateid
*stateid
, nfs4_stateid
*freeme
)
1440 if (test_and_set_bit(NFS_OPEN_STATE
, &state
->flags
) == 0)
1442 if (!nfs4_stateid_match_other(stateid
, &state
->open_stateid
)) {
1443 nfs4_stateid_copy(freeme
, &state
->open_stateid
);
1444 nfs_test_and_clear_all_open_stateid(state
);
1447 if (nfs4_stateid_is_newer(stateid
, &state
->open_stateid
))
1452 static void nfs_resync_open_stateid_locked(struct nfs4_state
*state
)
1454 if (!(state
->n_wronly
|| state
->n_rdonly
|| state
->n_rdwr
))
1456 if (state
->n_wronly
)
1457 set_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
1458 if (state
->n_rdonly
)
1459 set_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
1461 set_bit(NFS_O_RDWR_STATE
, &state
->flags
);
1462 set_bit(NFS_OPEN_STATE
, &state
->flags
);
1465 static void nfs_clear_open_stateid_locked(struct nfs4_state
*state
,
1466 nfs4_stateid
*stateid
, fmode_t fmode
)
1468 clear_bit(NFS_O_RDWR_STATE
, &state
->flags
);
1469 switch (fmode
& (FMODE_READ
|FMODE_WRITE
)) {
1471 clear_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
1474 clear_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
1477 clear_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
1478 clear_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
1479 clear_bit(NFS_OPEN_STATE
, &state
->flags
);
1481 if (stateid
== NULL
)
1483 /* Handle OPEN+OPEN_DOWNGRADE races */
1484 if (nfs4_stateid_match_other(stateid
, &state
->open_stateid
) &&
1485 !nfs4_stateid_is_newer(stateid
, &state
->open_stateid
)) {
1486 nfs_resync_open_stateid_locked(state
);
1489 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) == 0)
1490 nfs4_stateid_copy(&state
->stateid
, stateid
);
1491 nfs4_stateid_copy(&state
->open_stateid
, stateid
);
1494 static void nfs_clear_open_stateid(struct nfs4_state
*state
,
1495 nfs4_stateid
*arg_stateid
,
1496 nfs4_stateid
*stateid
, fmode_t fmode
)
1498 write_seqlock(&state
->seqlock
);
1499 /* Ignore, if the CLOSE argment doesn't match the current stateid */
1500 if (nfs4_state_match_open_stateid_other(state
, arg_stateid
))
1501 nfs_clear_open_stateid_locked(state
, stateid
, fmode
);
1502 write_sequnlock(&state
->seqlock
);
1503 if (test_bit(NFS_STATE_RECLAIM_NOGRACE
, &state
->flags
))
1504 nfs4_schedule_state_manager(state
->owner
->so_server
->nfs_client
);
1507 static void nfs_set_open_stateid_locked(struct nfs4_state
*state
,
1508 const nfs4_stateid
*stateid
, fmode_t fmode
,
1509 nfs4_stateid
*freeme
)
1513 set_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
1516 set_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
1518 case FMODE_READ
|FMODE_WRITE
:
1519 set_bit(NFS_O_RDWR_STATE
, &state
->flags
);
1521 if (!nfs_need_update_open_stateid(state
, stateid
, freeme
))
1523 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) == 0)
1524 nfs4_stateid_copy(&state
->stateid
, stateid
);
1525 nfs4_stateid_copy(&state
->open_stateid
, stateid
);
1528 static void __update_open_stateid(struct nfs4_state
*state
,
1529 const nfs4_stateid
*open_stateid
,
1530 const nfs4_stateid
*deleg_stateid
,
1532 nfs4_stateid
*freeme
)
1535 * Protect the call to nfs4_state_set_mode_locked and
1536 * serialise the stateid update
1538 spin_lock(&state
->owner
->so_lock
);
1539 write_seqlock(&state
->seqlock
);
1540 if (deleg_stateid
!= NULL
) {
1541 nfs4_stateid_copy(&state
->stateid
, deleg_stateid
);
1542 set_bit(NFS_DELEGATED_STATE
, &state
->flags
);
1544 if (open_stateid
!= NULL
)
1545 nfs_set_open_stateid_locked(state
, open_stateid
, fmode
, freeme
);
1546 write_sequnlock(&state
->seqlock
);
1547 update_open_stateflags(state
, fmode
);
1548 spin_unlock(&state
->owner
->so_lock
);
1551 static int update_open_stateid(struct nfs4_state
*state
,
1552 const nfs4_stateid
*open_stateid
,
1553 const nfs4_stateid
*delegation
,
1556 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
1557 struct nfs_client
*clp
= server
->nfs_client
;
1558 struct nfs_inode
*nfsi
= NFS_I(state
->inode
);
1559 struct nfs_delegation
*deleg_cur
;
1560 nfs4_stateid freeme
= { };
1563 fmode
&= (FMODE_READ
|FMODE_WRITE
);
1566 deleg_cur
= rcu_dereference(nfsi
->delegation
);
1567 if (deleg_cur
== NULL
)
1570 spin_lock(&deleg_cur
->lock
);
1571 if (rcu_dereference(nfsi
->delegation
) != deleg_cur
||
1572 test_bit(NFS_DELEGATION_RETURNING
, &deleg_cur
->flags
) ||
1573 (deleg_cur
->type
& fmode
) != fmode
)
1574 goto no_delegation_unlock
;
1576 if (delegation
== NULL
)
1577 delegation
= &deleg_cur
->stateid
;
1578 else if (!nfs4_stateid_match(&deleg_cur
->stateid
, delegation
))
1579 goto no_delegation_unlock
;
1581 nfs_mark_delegation_referenced(deleg_cur
);
1582 __update_open_stateid(state
, open_stateid
, &deleg_cur
->stateid
,
1585 no_delegation_unlock
:
1586 spin_unlock(&deleg_cur
->lock
);
1590 if (!ret
&& open_stateid
!= NULL
) {
1591 __update_open_stateid(state
, open_stateid
, NULL
, fmode
, &freeme
);
1594 if (test_bit(NFS_STATE_RECLAIM_NOGRACE
, &state
->flags
))
1595 nfs4_schedule_state_manager(clp
);
1596 if (freeme
.type
!= 0)
1597 nfs4_test_and_free_stateid(server
, &freeme
,
1598 state
->owner
->so_cred
);
1603 static bool nfs4_update_lock_stateid(struct nfs4_lock_state
*lsp
,
1604 const nfs4_stateid
*stateid
)
1606 struct nfs4_state
*state
= lsp
->ls_state
;
1609 spin_lock(&state
->state_lock
);
1610 if (!nfs4_stateid_match_other(stateid
, &lsp
->ls_stateid
))
1612 if (!nfs4_stateid_is_newer(stateid
, &lsp
->ls_stateid
))
1614 nfs4_stateid_copy(&lsp
->ls_stateid
, stateid
);
1617 spin_unlock(&state
->state_lock
);
1621 static void nfs4_return_incompatible_delegation(struct inode
*inode
, fmode_t fmode
)
1623 struct nfs_delegation
*delegation
;
1626 delegation
= rcu_dereference(NFS_I(inode
)->delegation
);
1627 if (delegation
== NULL
|| (delegation
->type
& fmode
) == fmode
) {
1632 nfs4_inode_return_delegation(inode
);
1635 static struct nfs4_state
*nfs4_try_open_cached(struct nfs4_opendata
*opendata
)
1637 struct nfs4_state
*state
= opendata
->state
;
1638 struct nfs_inode
*nfsi
= NFS_I(state
->inode
);
1639 struct nfs_delegation
*delegation
;
1640 int open_mode
= opendata
->o_arg
.open_flags
;
1641 fmode_t fmode
= opendata
->o_arg
.fmode
;
1642 enum open_claim_type4 claim
= opendata
->o_arg
.claim
;
1643 nfs4_stateid stateid
;
1647 spin_lock(&state
->owner
->so_lock
);
1648 if (can_open_cached(state
, fmode
, open_mode
)) {
1649 update_open_stateflags(state
, fmode
);
1650 spin_unlock(&state
->owner
->so_lock
);
1651 goto out_return_state
;
1653 spin_unlock(&state
->owner
->so_lock
);
1655 delegation
= rcu_dereference(nfsi
->delegation
);
1656 if (!can_open_delegated(delegation
, fmode
, claim
)) {
1660 /* Save the delegation */
1661 nfs4_stateid_copy(&stateid
, &delegation
->stateid
);
1663 nfs_release_seqid(opendata
->o_arg
.seqid
);
1664 if (!opendata
->is_recover
) {
1665 ret
= nfs_may_open(state
->inode
, state
->owner
->so_cred
, open_mode
);
1671 /* Try to update the stateid using the delegation */
1672 if (update_open_stateid(state
, NULL
, &stateid
, fmode
))
1673 goto out_return_state
;
1676 return ERR_PTR(ret
);
1678 atomic_inc(&state
->count
);
1683 nfs4_opendata_check_deleg(struct nfs4_opendata
*data
, struct nfs4_state
*state
)
1685 struct nfs_client
*clp
= NFS_SERVER(state
->inode
)->nfs_client
;
1686 struct nfs_delegation
*delegation
;
1687 int delegation_flags
= 0;
1690 delegation
= rcu_dereference(NFS_I(state
->inode
)->delegation
);
1692 delegation_flags
= delegation
->flags
;
1694 switch (data
->o_arg
.claim
) {
1697 case NFS4_OPEN_CLAIM_DELEGATE_CUR
:
1698 case NFS4_OPEN_CLAIM_DELEG_CUR_FH
:
1699 pr_err_ratelimited("NFS: Broken NFSv4 server %s is "
1700 "returning a delegation for "
1701 "OPEN(CLAIM_DELEGATE_CUR)\n",
1705 if ((delegation_flags
& 1UL<<NFS_DELEGATION_NEED_RECLAIM
) == 0)
1706 nfs_inode_set_delegation(state
->inode
,
1707 data
->owner
->so_cred
,
1710 nfs_inode_reclaim_delegation(state
->inode
,
1711 data
->owner
->so_cred
,
1716 * Check the inode attributes against the CLAIM_PREVIOUS returned attributes
1717 * and update the nfs4_state.
1719 static struct nfs4_state
*
1720 _nfs4_opendata_reclaim_to_nfs4_state(struct nfs4_opendata
*data
)
1722 struct inode
*inode
= data
->state
->inode
;
1723 struct nfs4_state
*state
= data
->state
;
1726 if (!data
->rpc_done
) {
1727 if (data
->rpc_status
) {
1728 ret
= data
->rpc_status
;
1731 /* cached opens have already been processed */
1735 ret
= nfs_refresh_inode(inode
, &data
->f_attr
);
1739 if (data
->o_res
.delegation_type
!= 0)
1740 nfs4_opendata_check_deleg(data
, state
);
1742 update_open_stateid(state
, &data
->o_res
.stateid
, NULL
,
1744 atomic_inc(&state
->count
);
1748 return ERR_PTR(ret
);
1752 static struct nfs4_state
*
1753 _nfs4_opendata_to_nfs4_state(struct nfs4_opendata
*data
)
1755 struct inode
*inode
;
1756 struct nfs4_state
*state
= NULL
;
1759 if (!data
->rpc_done
) {
1760 state
= nfs4_try_open_cached(data
);
1761 trace_nfs4_cached_open(data
->state
);
1766 if (!(data
->f_attr
.valid
& NFS_ATTR_FATTR
))
1768 inode
= nfs_fhget(data
->dir
->d_sb
, &data
->o_res
.fh
, &data
->f_attr
, data
->f_label
);
1769 ret
= PTR_ERR(inode
);
1773 state
= nfs4_get_open_state(inode
, data
->owner
);
1776 if (data
->o_res
.delegation_type
!= 0)
1777 nfs4_opendata_check_deleg(data
, state
);
1778 update_open_stateid(state
, &data
->o_res
.stateid
, NULL
,
1782 nfs_release_seqid(data
->o_arg
.seqid
);
1787 return ERR_PTR(ret
);
1790 static struct nfs4_state
*
1791 nfs4_opendata_to_nfs4_state(struct nfs4_opendata
*data
)
1793 struct nfs4_state
*ret
;
1795 if (data
->o_arg
.claim
== NFS4_OPEN_CLAIM_PREVIOUS
)
1796 ret
=_nfs4_opendata_reclaim_to_nfs4_state(data
);
1798 ret
= _nfs4_opendata_to_nfs4_state(data
);
1799 nfs4_sequence_free_slot(&data
->o_res
.seq_res
);
1803 static struct nfs_open_context
*nfs4_state_find_open_context(struct nfs4_state
*state
)
1805 struct nfs_inode
*nfsi
= NFS_I(state
->inode
);
1806 struct nfs_open_context
*ctx
;
1808 spin_lock(&state
->inode
->i_lock
);
1809 list_for_each_entry(ctx
, &nfsi
->open_files
, list
) {
1810 if (ctx
->state
!= state
)
1812 get_nfs_open_context(ctx
);
1813 spin_unlock(&state
->inode
->i_lock
);
1816 spin_unlock(&state
->inode
->i_lock
);
1817 return ERR_PTR(-ENOENT
);
1820 static struct nfs4_opendata
*nfs4_open_recoverdata_alloc(struct nfs_open_context
*ctx
,
1821 struct nfs4_state
*state
, enum open_claim_type4 claim
)
1823 struct nfs4_opendata
*opendata
;
1825 opendata
= nfs4_opendata_alloc(ctx
->dentry
, state
->owner
, 0, 0,
1826 NULL
, NULL
, claim
, GFP_NOFS
);
1827 if (opendata
== NULL
)
1828 return ERR_PTR(-ENOMEM
);
1829 opendata
->state
= state
;
1830 atomic_inc(&state
->count
);
1834 static int nfs4_open_recover_helper(struct nfs4_opendata
*opendata
,
1837 struct nfs4_state
*newstate
;
1840 if (!nfs4_mode_match_open_stateid(opendata
->state
, fmode
))
1842 opendata
->o_arg
.open_flags
= 0;
1843 opendata
->o_arg
.fmode
= fmode
;
1844 opendata
->o_arg
.share_access
= nfs4_map_atomic_open_share(
1845 NFS_SB(opendata
->dentry
->d_sb
),
1847 memset(&opendata
->o_res
, 0, sizeof(opendata
->o_res
));
1848 memset(&opendata
->c_res
, 0, sizeof(opendata
->c_res
));
1849 nfs4_init_opendata_res(opendata
);
1850 ret
= _nfs4_recover_proc_open(opendata
);
1853 newstate
= nfs4_opendata_to_nfs4_state(opendata
);
1854 if (IS_ERR(newstate
))
1855 return PTR_ERR(newstate
);
1856 if (newstate
!= opendata
->state
)
1858 nfs4_close_state(newstate
, fmode
);
1862 static int nfs4_open_recover(struct nfs4_opendata
*opendata
, struct nfs4_state
*state
)
1866 /* Don't trigger recovery in nfs_test_and_clear_all_open_stateid */
1867 clear_bit(NFS_O_RDWR_STATE
, &state
->flags
);
1868 clear_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
1869 clear_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
1870 /* memory barrier prior to reading state->n_* */
1871 clear_bit(NFS_DELEGATED_STATE
, &state
->flags
);
1872 clear_bit(NFS_OPEN_STATE
, &state
->flags
);
1874 ret
= nfs4_open_recover_helper(opendata
, FMODE_READ
|FMODE_WRITE
);
1877 ret
= nfs4_open_recover_helper(opendata
, FMODE_WRITE
);
1880 ret
= nfs4_open_recover_helper(opendata
, FMODE_READ
);
1884 * We may have performed cached opens for all three recoveries.
1885 * Check if we need to update the current stateid.
1887 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) == 0 &&
1888 !nfs4_stateid_match(&state
->stateid
, &state
->open_stateid
)) {
1889 write_seqlock(&state
->seqlock
);
1890 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) == 0)
1891 nfs4_stateid_copy(&state
->stateid
, &state
->open_stateid
);
1892 write_sequnlock(&state
->seqlock
);
1899 * reclaim state on the server after a reboot.
1901 static int _nfs4_do_open_reclaim(struct nfs_open_context
*ctx
, struct nfs4_state
*state
)
1903 struct nfs_delegation
*delegation
;
1904 struct nfs4_opendata
*opendata
;
1905 fmode_t delegation_type
= 0;
1908 opendata
= nfs4_open_recoverdata_alloc(ctx
, state
,
1909 NFS4_OPEN_CLAIM_PREVIOUS
);
1910 if (IS_ERR(opendata
))
1911 return PTR_ERR(opendata
);
1913 delegation
= rcu_dereference(NFS_I(state
->inode
)->delegation
);
1914 if (delegation
!= NULL
&& test_bit(NFS_DELEGATION_NEED_RECLAIM
, &delegation
->flags
) != 0)
1915 delegation_type
= delegation
->type
;
1917 opendata
->o_arg
.u
.delegation_type
= delegation_type
;
1918 status
= nfs4_open_recover(opendata
, state
);
1919 nfs4_opendata_put(opendata
);
1923 static int nfs4_do_open_reclaim(struct nfs_open_context
*ctx
, struct nfs4_state
*state
)
1925 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
1926 struct nfs4_exception exception
= { };
1929 err
= _nfs4_do_open_reclaim(ctx
, state
);
1930 trace_nfs4_open_reclaim(ctx
, 0, err
);
1931 if (nfs4_clear_cap_atomic_open_v1(server
, err
, &exception
))
1933 if (err
!= -NFS4ERR_DELAY
)
1935 nfs4_handle_exception(server
, err
, &exception
);
1936 } while (exception
.retry
);
1940 static int nfs4_open_reclaim(struct nfs4_state_owner
*sp
, struct nfs4_state
*state
)
1942 struct nfs_open_context
*ctx
;
1945 ctx
= nfs4_state_find_open_context(state
);
1948 ret
= nfs4_do_open_reclaim(ctx
, state
);
1949 put_nfs_open_context(ctx
);
1953 static int nfs4_handle_delegation_recall_error(struct nfs_server
*server
, struct nfs4_state
*state
, const nfs4_stateid
*stateid
, int err
)
1957 printk(KERN_ERR
"NFS: %s: unhandled error "
1958 "%d.\n", __func__
, err
);
1964 case -NFS4ERR_BADSESSION
:
1965 case -NFS4ERR_BADSLOT
:
1966 case -NFS4ERR_BAD_HIGH_SLOT
:
1967 case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION
:
1968 case -NFS4ERR_DEADSESSION
:
1969 set_bit(NFS_DELEGATED_STATE
, &state
->flags
);
1970 nfs4_schedule_session_recovery(server
->nfs_client
->cl_session
, err
);
1972 case -NFS4ERR_STALE_CLIENTID
:
1973 case -NFS4ERR_STALE_STATEID
:
1974 set_bit(NFS_DELEGATED_STATE
, &state
->flags
);
1975 /* Don't recall a delegation if it was lost */
1976 nfs4_schedule_lease_recovery(server
->nfs_client
);
1978 case -NFS4ERR_MOVED
:
1979 nfs4_schedule_migration_recovery(server
);
1981 case -NFS4ERR_LEASE_MOVED
:
1982 nfs4_schedule_lease_moved_recovery(server
->nfs_client
);
1984 case -NFS4ERR_DELEG_REVOKED
:
1985 case -NFS4ERR_ADMIN_REVOKED
:
1986 case -NFS4ERR_EXPIRED
:
1987 case -NFS4ERR_BAD_STATEID
:
1988 case -NFS4ERR_OPENMODE
:
1989 nfs_inode_find_state_and_recover(state
->inode
,
1991 nfs4_schedule_stateid_recovery(server
, state
);
1993 case -NFS4ERR_DELAY
:
1994 case -NFS4ERR_GRACE
:
1995 set_bit(NFS_DELEGATED_STATE
, &state
->flags
);
1999 case -NFS4ERR_DENIED
:
2000 /* kill_proc(fl->fl_pid, SIGLOST, 1); */
2006 int nfs4_open_delegation_recall(struct nfs_open_context
*ctx
,
2007 struct nfs4_state
*state
, const nfs4_stateid
*stateid
,
2010 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
2011 struct nfs4_opendata
*opendata
;
2014 opendata
= nfs4_open_recoverdata_alloc(ctx
, state
,
2015 NFS4_OPEN_CLAIM_DELEG_CUR_FH
);
2016 if (IS_ERR(opendata
))
2017 return PTR_ERR(opendata
);
2018 nfs4_stateid_copy(&opendata
->o_arg
.u
.delegation
, stateid
);
2019 write_seqlock(&state
->seqlock
);
2020 nfs4_stateid_copy(&state
->stateid
, &state
->open_stateid
);
2021 write_sequnlock(&state
->seqlock
);
2022 clear_bit(NFS_DELEGATED_STATE
, &state
->flags
);
2023 switch (type
& (FMODE_READ
|FMODE_WRITE
)) {
2024 case FMODE_READ
|FMODE_WRITE
:
2026 err
= nfs4_open_recover_helper(opendata
, FMODE_READ
|FMODE_WRITE
);
2029 err
= nfs4_open_recover_helper(opendata
, FMODE_WRITE
);
2033 err
= nfs4_open_recover_helper(opendata
, FMODE_READ
);
2035 nfs4_opendata_put(opendata
);
2036 return nfs4_handle_delegation_recall_error(server
, state
, stateid
, err
);
2039 static void nfs4_open_confirm_prepare(struct rpc_task
*task
, void *calldata
)
2041 struct nfs4_opendata
*data
= calldata
;
2043 nfs40_setup_sequence(data
->o_arg
.server
->nfs_client
->cl_slot_tbl
,
2044 &data
->c_arg
.seq_args
, &data
->c_res
.seq_res
, task
);
2047 static void nfs4_open_confirm_done(struct rpc_task
*task
, void *calldata
)
2049 struct nfs4_opendata
*data
= calldata
;
2051 nfs40_sequence_done(task
, &data
->c_res
.seq_res
);
2053 data
->rpc_status
= task
->tk_status
;
2054 if (data
->rpc_status
== 0) {
2055 nfs4_stateid_copy(&data
->o_res
.stateid
, &data
->c_res
.stateid
);
2056 nfs_confirm_seqid(&data
->owner
->so_seqid
, 0);
2057 renew_lease(data
->o_res
.server
, data
->timestamp
);
2062 static void nfs4_open_confirm_release(void *calldata
)
2064 struct nfs4_opendata
*data
= calldata
;
2065 struct nfs4_state
*state
= NULL
;
2067 /* If this request hasn't been cancelled, do nothing */
2068 if (data
->cancelled
== 0)
2070 /* In case of error, no cleanup! */
2071 if (!data
->rpc_done
)
2073 state
= nfs4_opendata_to_nfs4_state(data
);
2075 nfs4_close_state(state
, data
->o_arg
.fmode
);
2077 nfs4_opendata_put(data
);
2080 static const struct rpc_call_ops nfs4_open_confirm_ops
= {
2081 .rpc_call_prepare
= nfs4_open_confirm_prepare
,
2082 .rpc_call_done
= nfs4_open_confirm_done
,
2083 .rpc_release
= nfs4_open_confirm_release
,
2087 * Note: On error, nfs4_proc_open_confirm will free the struct nfs4_opendata
2089 static int _nfs4_proc_open_confirm(struct nfs4_opendata
*data
)
2091 struct nfs_server
*server
= NFS_SERVER(d_inode(data
->dir
));
2092 struct rpc_task
*task
;
2093 struct rpc_message msg
= {
2094 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_OPEN_CONFIRM
],
2095 .rpc_argp
= &data
->c_arg
,
2096 .rpc_resp
= &data
->c_res
,
2097 .rpc_cred
= data
->owner
->so_cred
,
2099 struct rpc_task_setup task_setup_data
= {
2100 .rpc_client
= server
->client
,
2101 .rpc_message
= &msg
,
2102 .callback_ops
= &nfs4_open_confirm_ops
,
2103 .callback_data
= data
,
2104 .workqueue
= nfsiod_workqueue
,
2105 .flags
= RPC_TASK_ASYNC
,
2109 nfs4_init_sequence(&data
->c_arg
.seq_args
, &data
->c_res
.seq_res
, 1);
2110 kref_get(&data
->kref
);
2112 data
->rpc_status
= 0;
2113 data
->timestamp
= jiffies
;
2114 if (data
->is_recover
)
2115 nfs4_set_sequence_privileged(&data
->c_arg
.seq_args
);
2116 task
= rpc_run_task(&task_setup_data
);
2118 return PTR_ERR(task
);
2119 status
= nfs4_wait_for_completion_rpc_task(task
);
2121 data
->cancelled
= 1;
2124 status
= data
->rpc_status
;
2129 static void nfs4_open_prepare(struct rpc_task
*task
, void *calldata
)
2131 struct nfs4_opendata
*data
= calldata
;
2132 struct nfs4_state_owner
*sp
= data
->owner
;
2133 struct nfs_client
*clp
= sp
->so_server
->nfs_client
;
2134 enum open_claim_type4 claim
= data
->o_arg
.claim
;
2136 if (nfs_wait_on_sequence(data
->o_arg
.seqid
, task
) != 0)
2139 * Check if we still need to send an OPEN call, or if we can use
2140 * a delegation instead.
2142 if (data
->state
!= NULL
) {
2143 struct nfs_delegation
*delegation
;
2145 if (can_open_cached(data
->state
, data
->o_arg
.fmode
, data
->o_arg
.open_flags
))
2148 delegation
= rcu_dereference(NFS_I(data
->state
->inode
)->delegation
);
2149 if (can_open_delegated(delegation
, data
->o_arg
.fmode
, claim
))
2150 goto unlock_no_action
;
2153 /* Update client id. */
2154 data
->o_arg
.clientid
= clp
->cl_clientid
;
2158 case NFS4_OPEN_CLAIM_PREVIOUS
:
2159 case NFS4_OPEN_CLAIM_DELEG_CUR_FH
:
2160 case NFS4_OPEN_CLAIM_DELEG_PREV_FH
:
2161 data
->o_arg
.open_bitmap
= &nfs4_open_noattr_bitmap
[0];
2162 case NFS4_OPEN_CLAIM_FH
:
2163 task
->tk_msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_OPEN_NOATTR
];
2164 nfs_copy_fh(&data
->o_res
.fh
, data
->o_arg
.fh
);
2166 data
->timestamp
= jiffies
;
2167 if (nfs4_setup_sequence(data
->o_arg
.server
,
2168 &data
->o_arg
.seq_args
,
2169 &data
->o_res
.seq_res
,
2171 nfs_release_seqid(data
->o_arg
.seqid
);
2173 /* Set the create mode (note dependency on the session type) */
2174 data
->o_arg
.createmode
= NFS4_CREATE_UNCHECKED
;
2175 if (data
->o_arg
.open_flags
& O_EXCL
) {
2176 data
->o_arg
.createmode
= NFS4_CREATE_EXCLUSIVE
;
2177 if (nfs4_has_persistent_session(clp
))
2178 data
->o_arg
.createmode
= NFS4_CREATE_GUARDED
;
2179 else if (clp
->cl_mvops
->minor_version
> 0)
2180 data
->o_arg
.createmode
= NFS4_CREATE_EXCLUSIVE4_1
;
2184 trace_nfs4_cached_open(data
->state
);
2187 task
->tk_action
= NULL
;
2189 nfs4_sequence_done(task
, &data
->o_res
.seq_res
);
2192 static void nfs4_open_done(struct rpc_task
*task
, void *calldata
)
2194 struct nfs4_opendata
*data
= calldata
;
2196 data
->rpc_status
= task
->tk_status
;
2198 if (!nfs4_sequence_process(task
, &data
->o_res
.seq_res
))
2201 if (task
->tk_status
== 0) {
2202 if (data
->o_res
.f_attr
->valid
& NFS_ATTR_FATTR_TYPE
) {
2203 switch (data
->o_res
.f_attr
->mode
& S_IFMT
) {
2207 data
->rpc_status
= -ELOOP
;
2210 data
->rpc_status
= -EISDIR
;
2213 data
->rpc_status
= -ENOTDIR
;
2216 renew_lease(data
->o_res
.server
, data
->timestamp
);
2217 if (!(data
->o_res
.rflags
& NFS4_OPEN_RESULT_CONFIRM
))
2218 nfs_confirm_seqid(&data
->owner
->so_seqid
, 0);
2223 static void nfs4_open_release(void *calldata
)
2225 struct nfs4_opendata
*data
= calldata
;
2226 struct nfs4_state
*state
= NULL
;
2228 /* If this request hasn't been cancelled, do nothing */
2229 if (data
->cancelled
== 0)
2231 /* In case of error, no cleanup! */
2232 if (data
->rpc_status
!= 0 || !data
->rpc_done
)
2234 /* In case we need an open_confirm, no cleanup! */
2235 if (data
->o_res
.rflags
& NFS4_OPEN_RESULT_CONFIRM
)
2237 state
= nfs4_opendata_to_nfs4_state(data
);
2239 nfs4_close_state(state
, data
->o_arg
.fmode
);
2241 nfs4_opendata_put(data
);
2244 static const struct rpc_call_ops nfs4_open_ops
= {
2245 .rpc_call_prepare
= nfs4_open_prepare
,
2246 .rpc_call_done
= nfs4_open_done
,
2247 .rpc_release
= nfs4_open_release
,
2250 static int nfs4_run_open_task(struct nfs4_opendata
*data
, int isrecover
)
2252 struct inode
*dir
= d_inode(data
->dir
);
2253 struct nfs_server
*server
= NFS_SERVER(dir
);
2254 struct nfs_openargs
*o_arg
= &data
->o_arg
;
2255 struct nfs_openres
*o_res
= &data
->o_res
;
2256 struct rpc_task
*task
;
2257 struct rpc_message msg
= {
2258 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_OPEN
],
2261 .rpc_cred
= data
->owner
->so_cred
,
2263 struct rpc_task_setup task_setup_data
= {
2264 .rpc_client
= server
->client
,
2265 .rpc_message
= &msg
,
2266 .callback_ops
= &nfs4_open_ops
,
2267 .callback_data
= data
,
2268 .workqueue
= nfsiod_workqueue
,
2269 .flags
= RPC_TASK_ASYNC
,
2273 nfs4_init_sequence(&o_arg
->seq_args
, &o_res
->seq_res
, 1);
2274 kref_get(&data
->kref
);
2276 data
->rpc_status
= 0;
2277 data
->cancelled
= 0;
2278 data
->is_recover
= 0;
2280 nfs4_set_sequence_privileged(&o_arg
->seq_args
);
2281 data
->is_recover
= 1;
2283 task
= rpc_run_task(&task_setup_data
);
2285 return PTR_ERR(task
);
2286 status
= nfs4_wait_for_completion_rpc_task(task
);
2288 data
->cancelled
= 1;
2291 status
= data
->rpc_status
;
2297 static int _nfs4_recover_proc_open(struct nfs4_opendata
*data
)
2299 struct inode
*dir
= d_inode(data
->dir
);
2300 struct nfs_openres
*o_res
= &data
->o_res
;
2303 status
= nfs4_run_open_task(data
, 1);
2304 if (status
!= 0 || !data
->rpc_done
)
2307 nfs_fattr_map_and_free_names(NFS_SERVER(dir
), &data
->f_attr
);
2309 if (o_res
->rflags
& NFS4_OPEN_RESULT_CONFIRM
) {
2310 status
= _nfs4_proc_open_confirm(data
);
2319 * Additional permission checks in order to distinguish between an
2320 * open for read, and an open for execute. This works around the
2321 * fact that NFSv4 OPEN treats read and execute permissions as being
2323 * Note that in the non-execute case, we want to turn off permission
2324 * checking if we just created a new file (POSIX open() semantics).
2326 static int nfs4_opendata_access(struct rpc_cred
*cred
,
2327 struct nfs4_opendata
*opendata
,
2328 struct nfs4_state
*state
, fmode_t fmode
,
2331 struct nfs_access_entry cache
;
2334 /* access call failed or for some reason the server doesn't
2335 * support any access modes -- defer access call until later */
2336 if (opendata
->o_res
.access_supported
== 0)
2341 * Use openflags to check for exec, because fmode won't
2342 * always have FMODE_EXEC set when file open for exec.
2344 if (openflags
& __FMODE_EXEC
) {
2345 /* ONLY check for exec rights */
2347 } else if ((fmode
& FMODE_READ
) && !opendata
->file_created
)
2351 cache
.jiffies
= jiffies
;
2352 nfs_access_set_mask(&cache
, opendata
->o_res
.access_result
);
2353 nfs_access_add_cache(state
->inode
, &cache
);
2355 if ((mask
& ~cache
.mask
& (MAY_READ
| MAY_EXEC
)) == 0)
2358 /* even though OPEN succeeded, access is denied. Close the file */
2359 nfs4_close_state(state
, fmode
);
2364 * Note: On error, nfs4_proc_open will free the struct nfs4_opendata
2366 static int _nfs4_proc_open(struct nfs4_opendata
*data
)
2368 struct inode
*dir
= d_inode(data
->dir
);
2369 struct nfs_server
*server
= NFS_SERVER(dir
);
2370 struct nfs_openargs
*o_arg
= &data
->o_arg
;
2371 struct nfs_openres
*o_res
= &data
->o_res
;
2374 status
= nfs4_run_open_task(data
, 0);
2375 if (!data
->rpc_done
)
2378 if (status
== -NFS4ERR_BADNAME
&&
2379 !(o_arg
->open_flags
& O_CREAT
))
2384 nfs_fattr_map_and_free_names(server
, &data
->f_attr
);
2386 if (o_arg
->open_flags
& O_CREAT
) {
2387 update_changeattr(dir
, &o_res
->cinfo
);
2388 if (o_arg
->open_flags
& O_EXCL
)
2389 data
->file_created
= 1;
2390 else if (o_res
->cinfo
.before
!= o_res
->cinfo
.after
)
2391 data
->file_created
= 1;
2393 if ((o_res
->rflags
& NFS4_OPEN_RESULT_LOCKTYPE_POSIX
) == 0)
2394 server
->caps
&= ~NFS_CAP_POSIX_LOCK
;
2395 if(o_res
->rflags
& NFS4_OPEN_RESULT_CONFIRM
) {
2396 status
= _nfs4_proc_open_confirm(data
);
2400 if (!(o_res
->f_attr
->valid
& NFS_ATTR_FATTR
))
2401 nfs4_proc_getattr(server
, &o_res
->fh
, o_res
->f_attr
, o_res
->f_label
);
2405 static int nfs4_recover_expired_lease(struct nfs_server
*server
)
2407 return nfs4_client_recover_expired_lease(server
->nfs_client
);
2412 * reclaim state on the server after a network partition.
2413 * Assumes caller holds the appropriate lock
2415 static int _nfs4_open_expired(struct nfs_open_context
*ctx
, struct nfs4_state
*state
)
2417 struct nfs4_opendata
*opendata
;
2420 opendata
= nfs4_open_recoverdata_alloc(ctx
, state
,
2421 NFS4_OPEN_CLAIM_FH
);
2422 if (IS_ERR(opendata
))
2423 return PTR_ERR(opendata
);
2424 ret
= nfs4_open_recover(opendata
, state
);
2426 d_drop(ctx
->dentry
);
2427 nfs4_opendata_put(opendata
);
2431 static int nfs4_do_open_expired(struct nfs_open_context
*ctx
, struct nfs4_state
*state
)
2433 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
2434 struct nfs4_exception exception
= { };
2438 err
= _nfs4_open_expired(ctx
, state
);
2439 trace_nfs4_open_expired(ctx
, 0, err
);
2440 if (nfs4_clear_cap_atomic_open_v1(server
, err
, &exception
))
2445 case -NFS4ERR_GRACE
:
2446 case -NFS4ERR_DELAY
:
2447 nfs4_handle_exception(server
, err
, &exception
);
2450 } while (exception
.retry
);
2455 static int nfs4_open_expired(struct nfs4_state_owner
*sp
, struct nfs4_state
*state
)
2457 struct nfs_open_context
*ctx
;
2460 ctx
= nfs4_state_find_open_context(state
);
2463 ret
= nfs4_do_open_expired(ctx
, state
);
2464 put_nfs_open_context(ctx
);
2468 static void nfs_finish_clear_delegation_stateid(struct nfs4_state
*state
,
2469 const nfs4_stateid
*stateid
)
2471 nfs_remove_bad_delegation(state
->inode
, stateid
);
2472 write_seqlock(&state
->seqlock
);
2473 nfs4_stateid_copy(&state
->stateid
, &state
->open_stateid
);
2474 write_sequnlock(&state
->seqlock
);
2475 clear_bit(NFS_DELEGATED_STATE
, &state
->flags
);
2478 static void nfs40_clear_delegation_stateid(struct nfs4_state
*state
)
2480 if (rcu_access_pointer(NFS_I(state
->inode
)->delegation
) != NULL
)
2481 nfs_finish_clear_delegation_stateid(state
, NULL
);
2484 static int nfs40_open_expired(struct nfs4_state_owner
*sp
, struct nfs4_state
*state
)
2486 /* NFSv4.0 doesn't allow for delegation recovery on open expire */
2487 nfs40_clear_delegation_stateid(state
);
2488 return nfs4_open_expired(sp
, state
);
2491 static int nfs40_test_and_free_expired_stateid(struct nfs_server
*server
,
2492 nfs4_stateid
*stateid
,
2493 struct rpc_cred
*cred
)
2495 return -NFS4ERR_BAD_STATEID
;
2498 #if defined(CONFIG_NFS_V4_1)
2499 static int nfs41_test_and_free_expired_stateid(struct nfs_server
*server
,
2500 nfs4_stateid
*stateid
,
2501 struct rpc_cred
*cred
)
2505 switch (stateid
->type
) {
2508 case NFS4_INVALID_STATEID_TYPE
:
2509 case NFS4_SPECIAL_STATEID_TYPE
:
2510 return -NFS4ERR_BAD_STATEID
;
2511 case NFS4_REVOKED_STATEID_TYPE
:
2515 status
= nfs41_test_stateid(server
, stateid
, cred
);
2517 case -NFS4ERR_EXPIRED
:
2518 case -NFS4ERR_ADMIN_REVOKED
:
2519 case -NFS4ERR_DELEG_REVOKED
:
2525 /* Ack the revoked state to the server */
2526 nfs41_free_stateid(server
, stateid
, cred
, true);
2527 return -NFS4ERR_EXPIRED
;
2530 static void nfs41_check_delegation_stateid(struct nfs4_state
*state
)
2532 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
2533 nfs4_stateid stateid
;
2534 struct nfs_delegation
*delegation
;
2535 struct rpc_cred
*cred
;
2538 /* Get the delegation credential for use by test/free_stateid */
2540 delegation
= rcu_dereference(NFS_I(state
->inode
)->delegation
);
2541 if (delegation
== NULL
) {
2546 nfs4_stateid_copy(&stateid
, &delegation
->stateid
);
2547 if (test_bit(NFS_DELEGATION_REVOKED
, &delegation
->flags
)) {
2549 nfs_finish_clear_delegation_stateid(state
, &stateid
);
2553 if (!test_and_clear_bit(NFS_DELEGATION_TEST_EXPIRED
, &delegation
->flags
)) {
2558 cred
= get_rpccred(delegation
->cred
);
2560 status
= nfs41_test_and_free_expired_stateid(server
, &stateid
, cred
);
2561 trace_nfs4_test_delegation_stateid(state
, NULL
, status
);
2562 if (status
== -NFS4ERR_EXPIRED
|| status
== -NFS4ERR_BAD_STATEID
)
2563 nfs_finish_clear_delegation_stateid(state
, &stateid
);
2569 * nfs41_check_expired_locks - possibly free a lock stateid
2571 * @state: NFSv4 state for an inode
2573 * Returns NFS_OK if recovery for this stateid is now finished.
2574 * Otherwise a negative NFS4ERR value is returned.
2576 static int nfs41_check_expired_locks(struct nfs4_state
*state
)
2578 int status
, ret
= NFS_OK
;
2579 struct nfs4_lock_state
*lsp
, *prev
= NULL
;
2580 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
2582 if (!test_bit(LK_STATE_IN_USE
, &state
->flags
))
2585 spin_lock(&state
->state_lock
);
2586 list_for_each_entry(lsp
, &state
->lock_states
, ls_locks
) {
2587 if (test_bit(NFS_LOCK_INITIALIZED
, &lsp
->ls_flags
)) {
2588 struct rpc_cred
*cred
= lsp
->ls_state
->owner
->so_cred
;
2590 atomic_inc(&lsp
->ls_count
);
2591 spin_unlock(&state
->state_lock
);
2593 nfs4_put_lock_state(prev
);
2596 status
= nfs41_test_and_free_expired_stateid(server
,
2599 trace_nfs4_test_lock_stateid(state
, lsp
, status
);
2600 if (status
== -NFS4ERR_EXPIRED
||
2601 status
== -NFS4ERR_BAD_STATEID
) {
2602 clear_bit(NFS_LOCK_INITIALIZED
, &lsp
->ls_flags
);
2603 lsp
->ls_stateid
.type
= NFS4_INVALID_STATEID_TYPE
;
2604 if (!recover_lost_locks
)
2605 set_bit(NFS_LOCK_LOST
, &lsp
->ls_flags
);
2606 } else if (status
!= NFS_OK
) {
2608 nfs4_put_lock_state(prev
);
2611 spin_lock(&state
->state_lock
);
2614 spin_unlock(&state
->state_lock
);
2615 nfs4_put_lock_state(prev
);
2621 * nfs41_check_open_stateid - possibly free an open stateid
2623 * @state: NFSv4 state for an inode
2625 * Returns NFS_OK if recovery for this stateid is now finished.
2626 * Otherwise a negative NFS4ERR value is returned.
2628 static int nfs41_check_open_stateid(struct nfs4_state
*state
)
2630 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
2631 nfs4_stateid
*stateid
= &state
->open_stateid
;
2632 struct rpc_cred
*cred
= state
->owner
->so_cred
;
2635 if (test_bit(NFS_OPEN_STATE
, &state
->flags
) == 0) {
2636 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) == 0) {
2637 if (nfs4_have_delegation(state
->inode
, state
->state
))
2639 return -NFS4ERR_OPENMODE
;
2641 return -NFS4ERR_BAD_STATEID
;
2643 status
= nfs41_test_and_free_expired_stateid(server
, stateid
, cred
);
2644 trace_nfs4_test_open_stateid(state
, NULL
, status
);
2645 if (status
== -NFS4ERR_EXPIRED
|| status
== -NFS4ERR_BAD_STATEID
) {
2646 clear_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
2647 clear_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
2648 clear_bit(NFS_O_RDWR_STATE
, &state
->flags
);
2649 clear_bit(NFS_OPEN_STATE
, &state
->flags
);
2650 stateid
->type
= NFS4_INVALID_STATEID_TYPE
;
2652 if (status
!= NFS_OK
)
2654 if (nfs_open_stateid_recover_openmode(state
))
2655 return -NFS4ERR_OPENMODE
;
2659 static int nfs41_open_expired(struct nfs4_state_owner
*sp
, struct nfs4_state
*state
)
2663 nfs41_check_delegation_stateid(state
);
2664 status
= nfs41_check_expired_locks(state
);
2665 if (status
!= NFS_OK
)
2667 status
= nfs41_check_open_stateid(state
);
2668 if (status
!= NFS_OK
)
2669 status
= nfs4_open_expired(sp
, state
);
2675 * on an EXCLUSIVE create, the server should send back a bitmask with FATTR4-*
2676 * fields corresponding to attributes that were used to store the verifier.
2677 * Make sure we clobber those fields in the later setattr call
2679 static inline void nfs4_exclusive_attrset(struct nfs4_opendata
*opendata
,
2680 struct iattr
*sattr
, struct nfs4_label
**label
)
2682 const u32
*attrset
= opendata
->o_res
.attrset
;
2684 if ((attrset
[1] & FATTR4_WORD1_TIME_ACCESS
) &&
2685 !(sattr
->ia_valid
& ATTR_ATIME_SET
))
2686 sattr
->ia_valid
|= ATTR_ATIME
;
2688 if ((attrset
[1] & FATTR4_WORD1_TIME_MODIFY
) &&
2689 !(sattr
->ia_valid
& ATTR_MTIME_SET
))
2690 sattr
->ia_valid
|= ATTR_MTIME
;
2692 /* Except MODE, it seems harmless of setting twice. */
2693 if ((attrset
[1] & FATTR4_WORD1_MODE
))
2694 sattr
->ia_valid
&= ~ATTR_MODE
;
2696 if (attrset
[2] & FATTR4_WORD2_SECURITY_LABEL
)
2700 static int _nfs4_open_and_get_state(struct nfs4_opendata
*opendata
,
2703 struct nfs_open_context
*ctx
)
2705 struct nfs4_state_owner
*sp
= opendata
->owner
;
2706 struct nfs_server
*server
= sp
->so_server
;
2707 struct dentry
*dentry
;
2708 struct nfs4_state
*state
;
2712 seq
= raw_seqcount_begin(&sp
->so_reclaim_seqcount
);
2714 ret
= _nfs4_proc_open(opendata
);
2718 state
= nfs4_opendata_to_nfs4_state(opendata
);
2719 ret
= PTR_ERR(state
);
2722 if (server
->caps
& NFS_CAP_POSIX_LOCK
)
2723 set_bit(NFS_STATE_POSIX_LOCKS
, &state
->flags
);
2724 if (opendata
->o_res
.rflags
& NFS4_OPEN_RESULT_MAY_NOTIFY_LOCK
)
2725 set_bit(NFS_STATE_MAY_NOTIFY_LOCK
, &state
->flags
);
2727 dentry
= opendata
->dentry
;
2728 if (d_really_is_negative(dentry
)) {
2729 struct dentry
*alias
;
2731 alias
= d_exact_alias(dentry
, state
->inode
);
2733 alias
= d_splice_alias(igrab(state
->inode
), dentry
);
2734 /* d_splice_alias() can't fail here - it's a non-directory */
2737 ctx
->dentry
= dentry
= alias
;
2739 nfs_set_verifier(dentry
,
2740 nfs_save_change_attribute(d_inode(opendata
->dir
)));
2743 ret
= nfs4_opendata_access(sp
->so_cred
, opendata
, state
, fmode
, flags
);
2748 if (d_inode(dentry
) == state
->inode
) {
2749 nfs_inode_attach_open_context(ctx
);
2750 if (read_seqcount_retry(&sp
->so_reclaim_seqcount
, seq
))
2751 nfs4_schedule_stateid_recovery(server
, state
);
2758 * Returns a referenced nfs4_state
2760 static int _nfs4_do_open(struct inode
*dir
,
2761 struct nfs_open_context
*ctx
,
2763 struct iattr
*sattr
,
2764 struct nfs4_label
*label
,
2767 struct nfs4_state_owner
*sp
;
2768 struct nfs4_state
*state
= NULL
;
2769 struct nfs_server
*server
= NFS_SERVER(dir
);
2770 struct nfs4_opendata
*opendata
;
2771 struct dentry
*dentry
= ctx
->dentry
;
2772 struct rpc_cred
*cred
= ctx
->cred
;
2773 struct nfs4_threshold
**ctx_th
= &ctx
->mdsthreshold
;
2774 fmode_t fmode
= ctx
->mode
& (FMODE_READ
|FMODE_WRITE
|FMODE_EXEC
);
2775 enum open_claim_type4 claim
= NFS4_OPEN_CLAIM_NULL
;
2776 struct nfs4_label
*olabel
= NULL
;
2779 /* Protect against reboot recovery conflicts */
2781 sp
= nfs4_get_state_owner(server
, cred
, GFP_KERNEL
);
2783 dprintk("nfs4_do_open: nfs4_get_state_owner failed!\n");
2786 status
= nfs4_recover_expired_lease(server
);
2788 goto err_put_state_owner
;
2789 if (d_really_is_positive(dentry
))
2790 nfs4_return_incompatible_delegation(d_inode(dentry
), fmode
);
2792 if (d_really_is_positive(dentry
))
2793 claim
= NFS4_OPEN_CLAIM_FH
;
2794 opendata
= nfs4_opendata_alloc(dentry
, sp
, fmode
, flags
, sattr
,
2795 label
, claim
, GFP_KERNEL
);
2796 if (opendata
== NULL
)
2797 goto err_put_state_owner
;
2800 olabel
= nfs4_label_alloc(server
, GFP_KERNEL
);
2801 if (IS_ERR(olabel
)) {
2802 status
= PTR_ERR(olabel
);
2803 goto err_opendata_put
;
2807 if (server
->attr_bitmask
[2] & FATTR4_WORD2_MDSTHRESHOLD
) {
2808 if (!opendata
->f_attr
.mdsthreshold
) {
2809 opendata
->f_attr
.mdsthreshold
= pnfs_mdsthreshold_alloc();
2810 if (!opendata
->f_attr
.mdsthreshold
)
2811 goto err_free_label
;
2813 opendata
->o_arg
.open_bitmap
= &nfs4_pnfs_open_bitmap
[0];
2815 if (d_really_is_positive(dentry
))
2816 opendata
->state
= nfs4_get_open_state(d_inode(dentry
), sp
);
2818 status
= _nfs4_open_and_get_state(opendata
, fmode
, flags
, ctx
);
2820 goto err_free_label
;
2823 if ((opendata
->o_arg
.open_flags
& (O_CREAT
|O_EXCL
)) == (O_CREAT
|O_EXCL
) &&
2824 (opendata
->o_arg
.createmode
!= NFS4_CREATE_GUARDED
)) {
2825 nfs4_exclusive_attrset(opendata
, sattr
, &label
);
2827 * send create attributes which was not set by open
2828 * with an extra setattr.
2830 if (sattr
->ia_valid
& NFS4_VALID_ATTRS
) {
2831 nfs_fattr_init(opendata
->o_res
.f_attr
);
2832 status
= nfs4_do_setattr(state
->inode
, cred
,
2833 opendata
->o_res
.f_attr
, sattr
,
2834 ctx
, label
, olabel
);
2836 nfs_setattr_update_inode(state
->inode
, sattr
,
2837 opendata
->o_res
.f_attr
);
2838 nfs_setsecurity(state
->inode
, opendata
->o_res
.f_attr
, olabel
);
2842 if (opened
&& opendata
->file_created
)
2843 *opened
|= FILE_CREATED
;
2845 if (pnfs_use_threshold(ctx_th
, opendata
->f_attr
.mdsthreshold
, server
)) {
2846 *ctx_th
= opendata
->f_attr
.mdsthreshold
;
2847 opendata
->f_attr
.mdsthreshold
= NULL
;
2850 nfs4_label_free(olabel
);
2852 nfs4_opendata_put(opendata
);
2853 nfs4_put_state_owner(sp
);
2856 nfs4_label_free(olabel
);
2858 nfs4_opendata_put(opendata
);
2859 err_put_state_owner
:
2860 nfs4_put_state_owner(sp
);
2866 static struct nfs4_state
*nfs4_do_open(struct inode
*dir
,
2867 struct nfs_open_context
*ctx
,
2869 struct iattr
*sattr
,
2870 struct nfs4_label
*label
,
2873 struct nfs_server
*server
= NFS_SERVER(dir
);
2874 struct nfs4_exception exception
= { };
2875 struct nfs4_state
*res
;
2879 status
= _nfs4_do_open(dir
, ctx
, flags
, sattr
, label
, opened
);
2881 trace_nfs4_open_file(ctx
, flags
, status
);
2884 /* NOTE: BAD_SEQID means the server and client disagree about the
2885 * book-keeping w.r.t. state-changing operations
2886 * (OPEN/CLOSE/LOCK/LOCKU...)
2887 * It is actually a sign of a bug on the client or on the server.
2889 * If we receive a BAD_SEQID error in the particular case of
2890 * doing an OPEN, we assume that nfs_increment_open_seqid() will
2891 * have unhashed the old state_owner for us, and that we can
2892 * therefore safely retry using a new one. We should still warn
2893 * the user though...
2895 if (status
== -NFS4ERR_BAD_SEQID
) {
2896 pr_warn_ratelimited("NFS: v4 server %s "
2897 " returned a bad sequence-id error!\n",
2898 NFS_SERVER(dir
)->nfs_client
->cl_hostname
);
2899 exception
.retry
= 1;
2903 * BAD_STATEID on OPEN means that the server cancelled our
2904 * state before it received the OPEN_CONFIRM.
2905 * Recover by retrying the request as per the discussion
2906 * on Page 181 of RFC3530.
2908 if (status
== -NFS4ERR_BAD_STATEID
) {
2909 exception
.retry
= 1;
2912 if (status
== -EAGAIN
) {
2913 /* We must have found a delegation */
2914 exception
.retry
= 1;
2917 if (nfs4_clear_cap_atomic_open_v1(server
, status
, &exception
))
2919 res
= ERR_PTR(nfs4_handle_exception(server
,
2920 status
, &exception
));
2921 } while (exception
.retry
);
2925 static int _nfs4_do_setattr(struct inode
*inode
,
2926 struct nfs_setattrargs
*arg
,
2927 struct nfs_setattrres
*res
,
2928 struct rpc_cred
*cred
,
2929 struct nfs_open_context
*ctx
)
2931 struct nfs_server
*server
= NFS_SERVER(inode
);
2932 struct rpc_message msg
= {
2933 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETATTR
],
2938 struct rpc_cred
*delegation_cred
= NULL
;
2939 unsigned long timestamp
= jiffies
;
2944 nfs_fattr_init(res
->fattr
);
2946 /* Servers should only apply open mode checks for file size changes */
2947 truncate
= (arg
->iap
->ia_valid
& ATTR_SIZE
) ? true : false;
2948 fmode
= truncate
? FMODE_WRITE
: FMODE_READ
;
2950 if (nfs4_copy_delegation_stateid(inode
, fmode
, &arg
->stateid
, &delegation_cred
)) {
2951 /* Use that stateid */
2952 } else if (truncate
&& ctx
!= NULL
) {
2953 struct nfs_lock_context
*l_ctx
;
2954 if (!nfs4_valid_open_stateid(ctx
->state
))
2956 l_ctx
= nfs_get_lock_context(ctx
);
2958 return PTR_ERR(l_ctx
);
2959 status
= nfs4_select_rw_stateid(ctx
->state
, FMODE_WRITE
, l_ctx
,
2960 &arg
->stateid
, &delegation_cred
);
2961 nfs_put_lock_context(l_ctx
);
2965 nfs4_stateid_copy(&arg
->stateid
, &zero_stateid
);
2966 if (delegation_cred
)
2967 msg
.rpc_cred
= delegation_cred
;
2969 status
= nfs4_call_sync(server
->client
, server
, &msg
, &arg
->seq_args
, &res
->seq_res
, 1);
2971 put_rpccred(delegation_cred
);
2972 if (status
== 0 && ctx
!= NULL
)
2973 renew_lease(server
, timestamp
);
2974 trace_nfs4_setattr(inode
, &arg
->stateid
, status
);
2978 static int nfs4_do_setattr(struct inode
*inode
, struct rpc_cred
*cred
,
2979 struct nfs_fattr
*fattr
, struct iattr
*sattr
,
2980 struct nfs_open_context
*ctx
, struct nfs4_label
*ilabel
,
2981 struct nfs4_label
*olabel
)
2983 struct nfs_server
*server
= NFS_SERVER(inode
);
2984 struct nfs4_state
*state
= ctx
? ctx
->state
: NULL
;
2985 struct nfs_setattrargs arg
= {
2986 .fh
= NFS_FH(inode
),
2989 .bitmask
= server
->attr_bitmask
,
2992 struct nfs_setattrres res
= {
2997 struct nfs4_exception exception
= {
3000 .stateid
= &arg
.stateid
,
3004 arg
.bitmask
= nfs4_bitmask(server
, ilabel
);
3006 arg
.bitmask
= nfs4_bitmask(server
, olabel
);
3009 err
= _nfs4_do_setattr(inode
, &arg
, &res
, cred
, ctx
);
3011 case -NFS4ERR_OPENMODE
:
3012 if (!(sattr
->ia_valid
& ATTR_SIZE
)) {
3013 pr_warn_once("NFSv4: server %s is incorrectly "
3014 "applying open mode checks to "
3015 "a SETATTR that is not "
3016 "changing file size.\n",
3017 server
->nfs_client
->cl_hostname
);
3019 if (state
&& !(state
->state
& FMODE_WRITE
)) {
3021 if (sattr
->ia_valid
& ATTR_OPEN
)
3026 err
= nfs4_handle_exception(server
, err
, &exception
);
3027 } while (exception
.retry
);
3033 nfs4_wait_on_layoutreturn(struct inode
*inode
, struct rpc_task
*task
)
3035 if (inode
== NULL
|| !nfs_have_layout(inode
))
3038 return pnfs_wait_on_layoutreturn(inode
, task
);
3041 struct nfs4_closedata
{
3042 struct inode
*inode
;
3043 struct nfs4_state
*state
;
3044 struct nfs_closeargs arg
;
3045 struct nfs_closeres res
;
3047 struct nfs4_layoutreturn_args arg
;
3048 struct nfs4_layoutreturn_res res
;
3049 struct nfs4_xdr_opaque_data ld_private
;
3053 struct nfs_fattr fattr
;
3054 unsigned long timestamp
;
3057 static void nfs4_free_closedata(void *data
)
3059 struct nfs4_closedata
*calldata
= data
;
3060 struct nfs4_state_owner
*sp
= calldata
->state
->owner
;
3061 struct super_block
*sb
= calldata
->state
->inode
->i_sb
;
3063 if (calldata
->lr
.roc
)
3064 pnfs_roc_release(&calldata
->lr
.arg
, &calldata
->lr
.res
,
3065 calldata
->res
.lr_ret
);
3066 nfs4_put_open_state(calldata
->state
);
3067 nfs_free_seqid(calldata
->arg
.seqid
);
3068 nfs4_put_state_owner(sp
);
3069 nfs_sb_deactive(sb
);
3073 static void nfs4_close_done(struct rpc_task
*task
, void *data
)
3075 struct nfs4_closedata
*calldata
= data
;
3076 struct nfs4_state
*state
= calldata
->state
;
3077 struct nfs_server
*server
= NFS_SERVER(calldata
->inode
);
3078 nfs4_stateid
*res_stateid
= NULL
;
3080 dprintk("%s: begin!\n", __func__
);
3081 if (!nfs4_sequence_done(task
, &calldata
->res
.seq_res
))
3083 trace_nfs4_close(state
, &calldata
->arg
, &calldata
->res
, task
->tk_status
);
3085 /* Handle Layoutreturn errors */
3086 if (calldata
->arg
.lr_args
&& task
->tk_status
!= 0) {
3087 switch (calldata
->res
.lr_ret
) {
3089 calldata
->res
.lr_ret
= -NFS4ERR_NOMATCHING_LAYOUT
;
3092 calldata
->arg
.lr_args
= NULL
;
3093 calldata
->res
.lr_res
= NULL
;
3095 case -NFS4ERR_ADMIN_REVOKED
:
3096 case -NFS4ERR_DELEG_REVOKED
:
3097 case -NFS4ERR_EXPIRED
:
3098 case -NFS4ERR_BAD_STATEID
:
3099 case -NFS4ERR_OLD_STATEID
:
3100 case -NFS4ERR_UNKNOWN_LAYOUTTYPE
:
3101 case -NFS4ERR_WRONG_CRED
:
3102 calldata
->arg
.lr_args
= NULL
;
3103 calldata
->res
.lr_res
= NULL
;
3104 calldata
->res
.lr_ret
= 0;
3105 rpc_restart_call_prepare(task
);
3110 /* hmm. we are done with the inode, and in the process of freeing
3111 * the state_owner. we keep this around to process errors
3113 switch (task
->tk_status
) {
3115 res_stateid
= &calldata
->res
.stateid
;
3116 renew_lease(server
, calldata
->timestamp
);
3118 case -NFS4ERR_ADMIN_REVOKED
:
3119 case -NFS4ERR_STALE_STATEID
:
3120 case -NFS4ERR_EXPIRED
:
3121 nfs4_free_revoked_stateid(server
,
3122 &calldata
->arg
.stateid
,
3123 task
->tk_msg
.rpc_cred
);
3124 case -NFS4ERR_OLD_STATEID
:
3125 case -NFS4ERR_BAD_STATEID
:
3126 if (!nfs4_stateid_match(&calldata
->arg
.stateid
,
3127 &state
->open_stateid
)) {
3128 rpc_restart_call_prepare(task
);
3131 if (calldata
->arg
.fmode
== 0)
3134 if (nfs4_async_handle_error(task
, server
, state
, NULL
) == -EAGAIN
) {
3135 rpc_restart_call_prepare(task
);
3139 nfs_clear_open_stateid(state
, &calldata
->arg
.stateid
,
3140 res_stateid
, calldata
->arg
.fmode
);
3142 nfs_release_seqid(calldata
->arg
.seqid
);
3143 nfs_refresh_inode(calldata
->inode
, calldata
->res
.fattr
);
3144 dprintk("%s: done, ret = %d!\n", __func__
, task
->tk_status
);
3147 static void nfs4_close_prepare(struct rpc_task
*task
, void *data
)
3149 struct nfs4_closedata
*calldata
= data
;
3150 struct nfs4_state
*state
= calldata
->state
;
3151 struct inode
*inode
= calldata
->inode
;
3152 bool is_rdonly
, is_wronly
, is_rdwr
;
3155 dprintk("%s: begin!\n", __func__
);
3156 if (nfs_wait_on_sequence(calldata
->arg
.seqid
, task
) != 0)
3159 task
->tk_msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_OPEN_DOWNGRADE
];
3160 spin_lock(&state
->owner
->so_lock
);
3161 is_rdwr
= test_bit(NFS_O_RDWR_STATE
, &state
->flags
);
3162 is_rdonly
= test_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
3163 is_wronly
= test_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
3164 nfs4_stateid_copy(&calldata
->arg
.stateid
, &state
->open_stateid
);
3165 /* Calculate the change in open mode */
3166 calldata
->arg
.fmode
= 0;
3167 if (state
->n_rdwr
== 0) {
3168 if (state
->n_rdonly
== 0)
3169 call_close
|= is_rdonly
;
3171 calldata
->arg
.fmode
|= FMODE_READ
;
3172 if (state
->n_wronly
== 0)
3173 call_close
|= is_wronly
;
3175 calldata
->arg
.fmode
|= FMODE_WRITE
;
3176 if (calldata
->arg
.fmode
!= (FMODE_READ
|FMODE_WRITE
))
3177 call_close
|= is_rdwr
;
3179 calldata
->arg
.fmode
|= FMODE_READ
|FMODE_WRITE
;
3181 if (!nfs4_valid_open_stateid(state
) ||
3182 test_bit(NFS_OPEN_STATE
, &state
->flags
) == 0)
3184 spin_unlock(&state
->owner
->so_lock
);
3187 /* Note: exit _without_ calling nfs4_close_done */
3191 if (!calldata
->lr
.roc
&& nfs4_wait_on_layoutreturn(inode
, task
)) {
3192 nfs_release_seqid(calldata
->arg
.seqid
);
3196 if (calldata
->arg
.fmode
== 0) {
3197 task
->tk_msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_CLOSE
];
3199 /* Close-to-open cache consistency revalidation */
3200 if (!nfs4_have_delegation(inode
, FMODE_READ
))
3201 calldata
->arg
.bitmask
= NFS_SERVER(inode
)->cache_consistency_bitmask
;
3203 calldata
->arg
.bitmask
= NULL
;
3206 calldata
->arg
.share_access
=
3207 nfs4_map_atomic_open_share(NFS_SERVER(inode
),
3208 calldata
->arg
.fmode
, 0);
3210 nfs_fattr_init(calldata
->res
.fattr
);
3211 calldata
->timestamp
= jiffies
;
3212 if (nfs4_setup_sequence(NFS_SERVER(inode
),
3213 &calldata
->arg
.seq_args
,
3214 &calldata
->res
.seq_res
,
3216 nfs_release_seqid(calldata
->arg
.seqid
);
3217 dprintk("%s: done!\n", __func__
);
3220 task
->tk_action
= NULL
;
3222 nfs4_sequence_done(task
, &calldata
->res
.seq_res
);
3225 static const struct rpc_call_ops nfs4_close_ops
= {
3226 .rpc_call_prepare
= nfs4_close_prepare
,
3227 .rpc_call_done
= nfs4_close_done
,
3228 .rpc_release
= nfs4_free_closedata
,
3232 * It is possible for data to be read/written from a mem-mapped file
3233 * after the sys_close call (which hits the vfs layer as a flush).
3234 * This means that we can't safely call nfsv4 close on a file until
3235 * the inode is cleared. This in turn means that we are not good
3236 * NFSv4 citizens - we do not indicate to the server to update the file's
3237 * share state even when we are done with one of the three share
3238 * stateid's in the inode.
3240 * NOTE: Caller must be holding the sp->so_owner semaphore!
3242 int nfs4_do_close(struct nfs4_state
*state
, gfp_t gfp_mask
, int wait
)
3244 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
3245 struct nfs_seqid
*(*alloc_seqid
)(struct nfs_seqid_counter
*, gfp_t
);
3246 struct nfs4_closedata
*calldata
;
3247 struct nfs4_state_owner
*sp
= state
->owner
;
3248 struct rpc_task
*task
;
3249 struct rpc_message msg
= {
3250 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_CLOSE
],
3251 .rpc_cred
= state
->owner
->so_cred
,
3253 struct rpc_task_setup task_setup_data
= {
3254 .rpc_client
= server
->client
,
3255 .rpc_message
= &msg
,
3256 .callback_ops
= &nfs4_close_ops
,
3257 .workqueue
= nfsiod_workqueue
,
3258 .flags
= RPC_TASK_ASYNC
,
3260 int status
= -ENOMEM
;
3262 nfs4_state_protect(server
->nfs_client
, NFS_SP4_MACH_CRED_CLEANUP
,
3263 &task_setup_data
.rpc_client
, &msg
);
3265 calldata
= kzalloc(sizeof(*calldata
), gfp_mask
);
3266 if (calldata
== NULL
)
3268 nfs4_init_sequence(&calldata
->arg
.seq_args
, &calldata
->res
.seq_res
, 1);
3269 calldata
->inode
= state
->inode
;
3270 calldata
->state
= state
;
3271 calldata
->arg
.fh
= NFS_FH(state
->inode
);
3272 /* Serialization for the sequence id */
3273 alloc_seqid
= server
->nfs_client
->cl_mvops
->alloc_seqid
;
3274 calldata
->arg
.seqid
= alloc_seqid(&state
->owner
->so_seqid
, gfp_mask
);
3275 if (IS_ERR(calldata
->arg
.seqid
))
3276 goto out_free_calldata
;
3277 calldata
->arg
.fmode
= 0;
3278 calldata
->lr
.arg
.ld_private
= &calldata
->lr
.ld_private
;
3279 calldata
->res
.fattr
= &calldata
->fattr
;
3280 calldata
->res
.seqid
= calldata
->arg
.seqid
;
3281 calldata
->res
.server
= server
;
3282 calldata
->res
.lr_ret
= -NFS4ERR_NOMATCHING_LAYOUT
;
3283 calldata
->lr
.roc
= pnfs_roc(state
->inode
,
3284 &calldata
->lr
.arg
, &calldata
->lr
.res
, msg
.rpc_cred
);
3285 if (calldata
->lr
.roc
) {
3286 calldata
->arg
.lr_args
= &calldata
->lr
.arg
;
3287 calldata
->res
.lr_res
= &calldata
->lr
.res
;
3289 nfs_sb_active(calldata
->inode
->i_sb
);
3291 msg
.rpc_argp
= &calldata
->arg
;
3292 msg
.rpc_resp
= &calldata
->res
;
3293 task_setup_data
.callback_data
= calldata
;
3294 task
= rpc_run_task(&task_setup_data
);
3296 return PTR_ERR(task
);
3299 status
= rpc_wait_for_completion_task(task
);
3305 nfs4_put_open_state(state
);
3306 nfs4_put_state_owner(sp
);
3310 static struct inode
*
3311 nfs4_atomic_open(struct inode
*dir
, struct nfs_open_context
*ctx
,
3312 int open_flags
, struct iattr
*attr
, int *opened
)
3314 struct nfs4_state
*state
;
3315 struct nfs4_label l
= {0, 0, 0, NULL
}, *label
= NULL
;
3317 label
= nfs4_label_init_security(dir
, ctx
->dentry
, attr
, &l
);
3319 /* Protect against concurrent sillydeletes */
3320 state
= nfs4_do_open(dir
, ctx
, open_flags
, attr
, label
, opened
);
3322 nfs4_label_release_security(label
);
3325 return ERR_CAST(state
);
3326 return state
->inode
;
3329 static void nfs4_close_context(struct nfs_open_context
*ctx
, int is_sync
)
3331 if (ctx
->state
== NULL
)
3334 nfs4_close_sync(ctx
->state
, ctx
->mode
);
3336 nfs4_close_state(ctx
->state
, ctx
->mode
);
3339 #define FATTR4_WORD1_NFS40_MASK (2*FATTR4_WORD1_MOUNTED_ON_FILEID - 1UL)
3340 #define FATTR4_WORD2_NFS41_MASK (2*FATTR4_WORD2_SUPPATTR_EXCLCREAT - 1UL)
3341 #define FATTR4_WORD2_NFS42_MASK (2*FATTR4_WORD2_MODE_UMASK - 1UL)
3343 static int _nfs4_server_capabilities(struct nfs_server
*server
, struct nfs_fh
*fhandle
)
3345 u32 bitmask
[3] = {}, minorversion
= server
->nfs_client
->cl_minorversion
;
3346 struct nfs4_server_caps_arg args
= {
3350 struct nfs4_server_caps_res res
= {};
3351 struct rpc_message msg
= {
3352 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SERVER_CAPS
],
3358 bitmask
[0] = FATTR4_WORD0_SUPPORTED_ATTRS
|
3359 FATTR4_WORD0_FH_EXPIRE_TYPE
|
3360 FATTR4_WORD0_LINK_SUPPORT
|
3361 FATTR4_WORD0_SYMLINK_SUPPORT
|
3362 FATTR4_WORD0_ACLSUPPORT
;
3364 bitmask
[2] = FATTR4_WORD2_SUPPATTR_EXCLCREAT
;
3366 status
= nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
3368 /* Sanity check the server answers */
3369 switch (minorversion
) {
3371 res
.attr_bitmask
[1] &= FATTR4_WORD1_NFS40_MASK
;
3372 res
.attr_bitmask
[2] = 0;
3375 res
.attr_bitmask
[2] &= FATTR4_WORD2_NFS41_MASK
;
3378 res
.attr_bitmask
[2] &= FATTR4_WORD2_NFS42_MASK
;
3380 memcpy(server
->attr_bitmask
, res
.attr_bitmask
, sizeof(server
->attr_bitmask
));
3381 server
->caps
&= ~(NFS_CAP_ACLS
|NFS_CAP_HARDLINKS
|
3382 NFS_CAP_SYMLINKS
|NFS_CAP_FILEID
|
3383 NFS_CAP_MODE
|NFS_CAP_NLINK
|NFS_CAP_OWNER
|
3384 NFS_CAP_OWNER_GROUP
|NFS_CAP_ATIME
|
3385 NFS_CAP_CTIME
|NFS_CAP_MTIME
|
3386 NFS_CAP_SECURITY_LABEL
);
3387 if (res
.attr_bitmask
[0] & FATTR4_WORD0_ACL
&&
3388 res
.acl_bitmask
& ACL4_SUPPORT_ALLOW_ACL
)
3389 server
->caps
|= NFS_CAP_ACLS
;
3390 if (res
.has_links
!= 0)
3391 server
->caps
|= NFS_CAP_HARDLINKS
;
3392 if (res
.has_symlinks
!= 0)
3393 server
->caps
|= NFS_CAP_SYMLINKS
;
3394 if (res
.attr_bitmask
[0] & FATTR4_WORD0_FILEID
)
3395 server
->caps
|= NFS_CAP_FILEID
;
3396 if (res
.attr_bitmask
[1] & FATTR4_WORD1_MODE
)
3397 server
->caps
|= NFS_CAP_MODE
;
3398 if (res
.attr_bitmask
[1] & FATTR4_WORD1_NUMLINKS
)
3399 server
->caps
|= NFS_CAP_NLINK
;
3400 if (res
.attr_bitmask
[1] & FATTR4_WORD1_OWNER
)
3401 server
->caps
|= NFS_CAP_OWNER
;
3402 if (res
.attr_bitmask
[1] & FATTR4_WORD1_OWNER_GROUP
)
3403 server
->caps
|= NFS_CAP_OWNER_GROUP
;
3404 if (res
.attr_bitmask
[1] & FATTR4_WORD1_TIME_ACCESS
)
3405 server
->caps
|= NFS_CAP_ATIME
;
3406 if (res
.attr_bitmask
[1] & FATTR4_WORD1_TIME_METADATA
)
3407 server
->caps
|= NFS_CAP_CTIME
;
3408 if (res
.attr_bitmask
[1] & FATTR4_WORD1_TIME_MODIFY
)
3409 server
->caps
|= NFS_CAP_MTIME
;
3410 #ifdef CONFIG_NFS_V4_SECURITY_LABEL
3411 if (res
.attr_bitmask
[2] & FATTR4_WORD2_SECURITY_LABEL
)
3412 server
->caps
|= NFS_CAP_SECURITY_LABEL
;
3414 memcpy(server
->attr_bitmask_nl
, res
.attr_bitmask
,
3415 sizeof(server
->attr_bitmask
));
3416 server
->attr_bitmask_nl
[2] &= ~FATTR4_WORD2_SECURITY_LABEL
;
3418 memcpy(server
->cache_consistency_bitmask
, res
.attr_bitmask
, sizeof(server
->cache_consistency_bitmask
));
3419 server
->cache_consistency_bitmask
[0] &= FATTR4_WORD0_CHANGE
|FATTR4_WORD0_SIZE
;
3420 server
->cache_consistency_bitmask
[1] &= FATTR4_WORD1_TIME_METADATA
|FATTR4_WORD1_TIME_MODIFY
;
3421 server
->cache_consistency_bitmask
[2] = 0;
3422 memcpy(server
->exclcreat_bitmask
, res
.exclcreat_bitmask
,
3423 sizeof(server
->exclcreat_bitmask
));
3424 server
->acl_bitmask
= res
.acl_bitmask
;
3425 server
->fh_expire_type
= res
.fh_expire_type
;
3431 int nfs4_server_capabilities(struct nfs_server
*server
, struct nfs_fh
*fhandle
)
3433 struct nfs4_exception exception
= { };
3436 err
= nfs4_handle_exception(server
,
3437 _nfs4_server_capabilities(server
, fhandle
),
3439 } while (exception
.retry
);
3443 static int _nfs4_lookup_root(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
3444 struct nfs_fsinfo
*info
)
3447 struct nfs4_lookup_root_arg args
= {
3450 struct nfs4_lookup_res res
= {
3452 .fattr
= info
->fattr
,
3455 struct rpc_message msg
= {
3456 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOOKUP_ROOT
],
3461 bitmask
[0] = nfs4_fattr_bitmap
[0];
3462 bitmask
[1] = nfs4_fattr_bitmap
[1];
3464 * Process the label in the upcoming getfattr
3466 bitmask
[2] = nfs4_fattr_bitmap
[2] & ~FATTR4_WORD2_SECURITY_LABEL
;
3468 nfs_fattr_init(info
->fattr
);
3469 return nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
3472 static int nfs4_lookup_root(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
3473 struct nfs_fsinfo
*info
)
3475 struct nfs4_exception exception
= { };
3478 err
= _nfs4_lookup_root(server
, fhandle
, info
);
3479 trace_nfs4_lookup_root(server
, fhandle
, info
->fattr
, err
);
3482 case -NFS4ERR_WRONGSEC
:
3485 err
= nfs4_handle_exception(server
, err
, &exception
);
3487 } while (exception
.retry
);
3492 static int nfs4_lookup_root_sec(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
3493 struct nfs_fsinfo
*info
, rpc_authflavor_t flavor
)
3495 struct rpc_auth_create_args auth_args
= {
3496 .pseudoflavor
= flavor
,
3498 struct rpc_auth
*auth
;
3501 auth
= rpcauth_create(&auth_args
, server
->client
);
3506 ret
= nfs4_lookup_root(server
, fhandle
, info
);
3512 * Retry pseudoroot lookup with various security flavors. We do this when:
3514 * NFSv4.0: the PUTROOTFH operation returns NFS4ERR_WRONGSEC
3515 * NFSv4.1: the server does not support the SECINFO_NO_NAME operation
3517 * Returns zero on success, or a negative NFS4ERR value, or a
3518 * negative errno value.
3520 static int nfs4_find_root_sec(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
3521 struct nfs_fsinfo
*info
)
3523 /* Per 3530bis 15.33.5 */
3524 static const rpc_authflavor_t flav_array
[] = {
3528 RPC_AUTH_UNIX
, /* courtesy */
3531 int status
= -EPERM
;
3534 if (server
->auth_info
.flavor_len
> 0) {
3535 /* try each flavor specified by user */
3536 for (i
= 0; i
< server
->auth_info
.flavor_len
; i
++) {
3537 status
= nfs4_lookup_root_sec(server
, fhandle
, info
,
3538 server
->auth_info
.flavors
[i
]);
3539 if (status
== -NFS4ERR_WRONGSEC
|| status
== -EACCES
)
3544 /* no flavors specified by user, try default list */
3545 for (i
= 0; i
< ARRAY_SIZE(flav_array
); i
++) {
3546 status
= nfs4_lookup_root_sec(server
, fhandle
, info
,
3548 if (status
== -NFS4ERR_WRONGSEC
|| status
== -EACCES
)
3555 * -EACCESS could mean that the user doesn't have correct permissions
3556 * to access the mount. It could also mean that we tried to mount
3557 * with a gss auth flavor, but rpc.gssd isn't running. Either way,
3558 * existing mount programs don't handle -EACCES very well so it should
3559 * be mapped to -EPERM instead.
3561 if (status
== -EACCES
)
3567 * nfs4_proc_get_rootfh - get file handle for server's pseudoroot
3568 * @server: initialized nfs_server handle
3569 * @fhandle: we fill in the pseudo-fs root file handle
3570 * @info: we fill in an FSINFO struct
3571 * @auth_probe: probe the auth flavours
3573 * Returns zero on success, or a negative errno.
3575 int nfs4_proc_get_rootfh(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
3576 struct nfs_fsinfo
*info
,
3582 status
= nfs4_lookup_root(server
, fhandle
, info
);
3584 if (auth_probe
|| status
== NFS4ERR_WRONGSEC
)
3585 status
= server
->nfs_client
->cl_mvops
->find_root_sec(server
,
3589 status
= nfs4_server_capabilities(server
, fhandle
);
3591 status
= nfs4_do_fsinfo(server
, fhandle
, info
);
3593 return nfs4_map_errors(status
);
3596 static int nfs4_proc_get_root(struct nfs_server
*server
, struct nfs_fh
*mntfh
,
3597 struct nfs_fsinfo
*info
)
3600 struct nfs_fattr
*fattr
= info
->fattr
;
3601 struct nfs4_label
*label
= NULL
;
3603 error
= nfs4_server_capabilities(server
, mntfh
);
3605 dprintk("nfs4_get_root: getcaps error = %d\n", -error
);
3609 label
= nfs4_label_alloc(server
, GFP_KERNEL
);
3611 return PTR_ERR(label
);
3613 error
= nfs4_proc_getattr(server
, mntfh
, fattr
, label
);
3615 dprintk("nfs4_get_root: getattr error = %d\n", -error
);
3616 goto err_free_label
;
3619 if (fattr
->valid
& NFS_ATTR_FATTR_FSID
&&
3620 !nfs_fsid_equal(&server
->fsid
, &fattr
->fsid
))
3621 memcpy(&server
->fsid
, &fattr
->fsid
, sizeof(server
->fsid
));
3624 nfs4_label_free(label
);
3630 * Get locations and (maybe) other attributes of a referral.
3631 * Note that we'll actually follow the referral later when
3632 * we detect fsid mismatch in inode revalidation
3634 static int nfs4_get_referral(struct rpc_clnt
*client
, struct inode
*dir
,
3635 const struct qstr
*name
, struct nfs_fattr
*fattr
,
3636 struct nfs_fh
*fhandle
)
3638 int status
= -ENOMEM
;
3639 struct page
*page
= NULL
;
3640 struct nfs4_fs_locations
*locations
= NULL
;
3642 page
= alloc_page(GFP_KERNEL
);
3645 locations
= kmalloc(sizeof(struct nfs4_fs_locations
), GFP_KERNEL
);
3646 if (locations
== NULL
)
3649 status
= nfs4_proc_fs_locations(client
, dir
, name
, locations
, page
);
3654 * If the fsid didn't change, this is a migration event, not a
3655 * referral. Cause us to drop into the exception handler, which
3656 * will kick off migration recovery.
3658 if (nfs_fsid_equal(&NFS_SERVER(dir
)->fsid
, &locations
->fattr
.fsid
)) {
3659 dprintk("%s: server did not return a different fsid for"
3660 " a referral at %s\n", __func__
, name
->name
);
3661 status
= -NFS4ERR_MOVED
;
3664 /* Fixup attributes for the nfs_lookup() call to nfs_fhget() */
3665 nfs_fixup_referral_attributes(&locations
->fattr
);
3667 /* replace the lookup nfs_fattr with the locations nfs_fattr */
3668 memcpy(fattr
, &locations
->fattr
, sizeof(struct nfs_fattr
));
3669 memset(fhandle
, 0, sizeof(struct nfs_fh
));
3677 static int _nfs4_proc_getattr(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
3678 struct nfs_fattr
*fattr
, struct nfs4_label
*label
)
3680 struct nfs4_getattr_arg args
= {
3682 .bitmask
= server
->attr_bitmask
,
3684 struct nfs4_getattr_res res
= {
3689 struct rpc_message msg
= {
3690 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GETATTR
],
3695 args
.bitmask
= nfs4_bitmask(server
, label
);
3697 nfs_fattr_init(fattr
);
3698 return nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
3701 static int nfs4_proc_getattr(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
3702 struct nfs_fattr
*fattr
, struct nfs4_label
*label
)
3704 struct nfs4_exception exception
= { };
3707 err
= _nfs4_proc_getattr(server
, fhandle
, fattr
, label
);
3708 trace_nfs4_getattr(server
, fhandle
, fattr
, err
);
3709 err
= nfs4_handle_exception(server
, err
,
3711 } while (exception
.retry
);
3716 * The file is not closed if it is opened due to the a request to change
3717 * the size of the file. The open call will not be needed once the
3718 * VFS layer lookup-intents are implemented.
3720 * Close is called when the inode is destroyed.
3721 * If we haven't opened the file for O_WRONLY, we
3722 * need to in the size_change case to obtain a stateid.
3725 * Because OPEN is always done by name in nfsv4, it is
3726 * possible that we opened a different file by the same
3727 * name. We can recognize this race condition, but we
3728 * can't do anything about it besides returning an error.
3730 * This will be fixed with VFS changes (lookup-intent).
3733 nfs4_proc_setattr(struct dentry
*dentry
, struct nfs_fattr
*fattr
,
3734 struct iattr
*sattr
)
3736 struct inode
*inode
= d_inode(dentry
);
3737 struct rpc_cred
*cred
= NULL
;
3738 struct nfs_open_context
*ctx
= NULL
;
3739 struct nfs4_label
*label
= NULL
;
3742 if (pnfs_ld_layoutret_on_setattr(inode
) &&
3743 sattr
->ia_valid
& ATTR_SIZE
&&
3744 sattr
->ia_size
< i_size_read(inode
))
3745 pnfs_commit_and_return_layout(inode
);
3747 nfs_fattr_init(fattr
);
3749 /* Deal with open(O_TRUNC) */
3750 if (sattr
->ia_valid
& ATTR_OPEN
)
3751 sattr
->ia_valid
&= ~(ATTR_MTIME
|ATTR_CTIME
);
3753 /* Optimization: if the end result is no change, don't RPC */
3754 if ((sattr
->ia_valid
& ~(ATTR_FILE
|ATTR_OPEN
)) == 0)
3757 /* Search for an existing open(O_WRITE) file */
3758 if (sattr
->ia_valid
& ATTR_FILE
) {
3760 ctx
= nfs_file_open_context(sattr
->ia_file
);
3765 label
= nfs4_label_alloc(NFS_SERVER(inode
), GFP_KERNEL
);
3767 return PTR_ERR(label
);
3769 status
= nfs4_do_setattr(inode
, cred
, fattr
, sattr
, ctx
, NULL
, label
);
3771 nfs_setattr_update_inode(inode
, sattr
, fattr
);
3772 nfs_setsecurity(inode
, fattr
, label
);
3774 nfs4_label_free(label
);
3778 static int _nfs4_proc_lookup(struct rpc_clnt
*clnt
, struct inode
*dir
,
3779 const struct qstr
*name
, struct nfs_fh
*fhandle
,
3780 struct nfs_fattr
*fattr
, struct nfs4_label
*label
)
3782 struct nfs_server
*server
= NFS_SERVER(dir
);
3784 struct nfs4_lookup_arg args
= {
3785 .bitmask
= server
->attr_bitmask
,
3786 .dir_fh
= NFS_FH(dir
),
3789 struct nfs4_lookup_res res
= {
3795 struct rpc_message msg
= {
3796 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOOKUP
],
3801 args
.bitmask
= nfs4_bitmask(server
, label
);
3803 nfs_fattr_init(fattr
);
3805 dprintk("NFS call lookup %s\n", name
->name
);
3806 status
= nfs4_call_sync(clnt
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
3807 dprintk("NFS reply lookup: %d\n", status
);
3811 static void nfs_fixup_secinfo_attributes(struct nfs_fattr
*fattr
)
3813 fattr
->valid
|= NFS_ATTR_FATTR_TYPE
| NFS_ATTR_FATTR_MODE
|
3814 NFS_ATTR_FATTR_NLINK
| NFS_ATTR_FATTR_MOUNTPOINT
;
3815 fattr
->mode
= S_IFDIR
| S_IRUGO
| S_IXUGO
;
3819 static int nfs4_proc_lookup_common(struct rpc_clnt
**clnt
, struct inode
*dir
,
3820 const struct qstr
*name
, struct nfs_fh
*fhandle
,
3821 struct nfs_fattr
*fattr
, struct nfs4_label
*label
)
3823 struct nfs4_exception exception
= { };
3824 struct rpc_clnt
*client
= *clnt
;
3827 err
= _nfs4_proc_lookup(client
, dir
, name
, fhandle
, fattr
, label
);
3828 trace_nfs4_lookup(dir
, name
, err
);
3830 case -NFS4ERR_BADNAME
:
3833 case -NFS4ERR_MOVED
:
3834 err
= nfs4_get_referral(client
, dir
, name
, fattr
, fhandle
);
3835 if (err
== -NFS4ERR_MOVED
)
3836 err
= nfs4_handle_exception(NFS_SERVER(dir
), err
, &exception
);
3838 case -NFS4ERR_WRONGSEC
:
3840 if (client
!= *clnt
)
3842 client
= nfs4_negotiate_security(client
, dir
, name
);
3844 return PTR_ERR(client
);
3846 exception
.retry
= 1;
3849 err
= nfs4_handle_exception(NFS_SERVER(dir
), err
, &exception
);
3851 } while (exception
.retry
);
3856 else if (client
!= *clnt
)
3857 rpc_shutdown_client(client
);
3862 static int nfs4_proc_lookup(struct inode
*dir
, const struct qstr
*name
,
3863 struct nfs_fh
*fhandle
, struct nfs_fattr
*fattr
,
3864 struct nfs4_label
*label
)
3867 struct rpc_clnt
*client
= NFS_CLIENT(dir
);
3869 status
= nfs4_proc_lookup_common(&client
, dir
, name
, fhandle
, fattr
, label
);
3870 if (client
!= NFS_CLIENT(dir
)) {
3871 rpc_shutdown_client(client
);
3872 nfs_fixup_secinfo_attributes(fattr
);
3878 nfs4_proc_lookup_mountpoint(struct inode
*dir
, const struct qstr
*name
,
3879 struct nfs_fh
*fhandle
, struct nfs_fattr
*fattr
)
3881 struct rpc_clnt
*client
= NFS_CLIENT(dir
);
3884 status
= nfs4_proc_lookup_common(&client
, dir
, name
, fhandle
, fattr
, NULL
);
3886 return ERR_PTR(status
);
3887 return (client
== NFS_CLIENT(dir
)) ? rpc_clone_client(client
) : client
;
3890 static int _nfs4_proc_access(struct inode
*inode
, struct nfs_access_entry
*entry
)
3892 struct nfs_server
*server
= NFS_SERVER(inode
);
3893 struct nfs4_accessargs args
= {
3894 .fh
= NFS_FH(inode
),
3895 .bitmask
= server
->cache_consistency_bitmask
,
3897 struct nfs4_accessres res
= {
3900 struct rpc_message msg
= {
3901 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_ACCESS
],
3904 .rpc_cred
= entry
->cred
,
3906 int mode
= entry
->mask
;
3910 * Determine which access bits we want to ask for...
3912 if (mode
& MAY_READ
)
3913 args
.access
|= NFS4_ACCESS_READ
;
3914 if (S_ISDIR(inode
->i_mode
)) {
3915 if (mode
& MAY_WRITE
)
3916 args
.access
|= NFS4_ACCESS_MODIFY
| NFS4_ACCESS_EXTEND
| NFS4_ACCESS_DELETE
;
3917 if (mode
& MAY_EXEC
)
3918 args
.access
|= NFS4_ACCESS_LOOKUP
;
3920 if (mode
& MAY_WRITE
)
3921 args
.access
|= NFS4_ACCESS_MODIFY
| NFS4_ACCESS_EXTEND
;
3922 if (mode
& MAY_EXEC
)
3923 args
.access
|= NFS4_ACCESS_EXECUTE
;
3926 res
.fattr
= nfs_alloc_fattr();
3927 if (res
.fattr
== NULL
)
3930 status
= nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
3932 nfs_access_set_mask(entry
, res
.access
);
3933 nfs_refresh_inode(inode
, res
.fattr
);
3935 nfs_free_fattr(res
.fattr
);
3939 static int nfs4_proc_access(struct inode
*inode
, struct nfs_access_entry
*entry
)
3941 struct nfs4_exception exception
= { };
3944 err
= _nfs4_proc_access(inode
, entry
);
3945 trace_nfs4_access(inode
, err
);
3946 err
= nfs4_handle_exception(NFS_SERVER(inode
), err
,
3948 } while (exception
.retry
);
3953 * TODO: For the time being, we don't try to get any attributes
3954 * along with any of the zero-copy operations READ, READDIR,
3957 * In the case of the first three, we want to put the GETATTR
3958 * after the read-type operation -- this is because it is hard
3959 * to predict the length of a GETATTR response in v4, and thus
3960 * align the READ data correctly. This means that the GETATTR
3961 * may end up partially falling into the page cache, and we should
3962 * shift it into the 'tail' of the xdr_buf before processing.
3963 * To do this efficiently, we need to know the total length
3964 * of data received, which doesn't seem to be available outside
3967 * In the case of WRITE, we also want to put the GETATTR after
3968 * the operation -- in this case because we want to make sure
3969 * we get the post-operation mtime and size.
3971 * Both of these changes to the XDR layer would in fact be quite
3972 * minor, but I decided to leave them for a subsequent patch.
3974 static int _nfs4_proc_readlink(struct inode
*inode
, struct page
*page
,
3975 unsigned int pgbase
, unsigned int pglen
)
3977 struct nfs4_readlink args
= {
3978 .fh
= NFS_FH(inode
),
3983 struct nfs4_readlink_res res
;
3984 struct rpc_message msg
= {
3985 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_READLINK
],
3990 return nfs4_call_sync(NFS_SERVER(inode
)->client
, NFS_SERVER(inode
), &msg
, &args
.seq_args
, &res
.seq_res
, 0);
3993 static int nfs4_proc_readlink(struct inode
*inode
, struct page
*page
,
3994 unsigned int pgbase
, unsigned int pglen
)
3996 struct nfs4_exception exception
= { };
3999 err
= _nfs4_proc_readlink(inode
, page
, pgbase
, pglen
);
4000 trace_nfs4_readlink(inode
, err
);
4001 err
= nfs4_handle_exception(NFS_SERVER(inode
), err
,
4003 } while (exception
.retry
);
4008 * This is just for mknod. open(O_CREAT) will always do ->open_context().
4011 nfs4_proc_create(struct inode
*dir
, struct dentry
*dentry
, struct iattr
*sattr
,
4014 struct nfs_server
*server
= NFS_SERVER(dir
);
4015 struct nfs4_label l
, *ilabel
= NULL
;
4016 struct nfs_open_context
*ctx
;
4017 struct nfs4_state
*state
;
4020 ctx
= alloc_nfs_open_context(dentry
, FMODE_READ
, NULL
);
4022 return PTR_ERR(ctx
);
4024 ilabel
= nfs4_label_init_security(dir
, dentry
, sattr
, &l
);
4026 if (!(server
->attr_bitmask
[2] & FATTR4_WORD2_MODE_UMASK
))
4027 sattr
->ia_mode
&= ~current_umask();
4028 state
= nfs4_do_open(dir
, ctx
, flags
, sattr
, ilabel
, NULL
);
4029 if (IS_ERR(state
)) {
4030 status
= PTR_ERR(state
);
4034 nfs4_label_release_security(ilabel
);
4035 put_nfs_open_context(ctx
);
4039 static int _nfs4_proc_remove(struct inode
*dir
, const struct qstr
*name
)
4041 struct nfs_server
*server
= NFS_SERVER(dir
);
4042 struct nfs_removeargs args
= {
4046 struct nfs_removeres res
= {
4049 struct rpc_message msg
= {
4050 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_REMOVE
],
4056 status
= nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 1);
4058 update_changeattr(dir
, &res
.cinfo
);
4062 static int nfs4_proc_remove(struct inode
*dir
, const struct qstr
*name
)
4064 struct nfs4_exception exception
= { };
4067 err
= _nfs4_proc_remove(dir
, name
);
4068 trace_nfs4_remove(dir
, name
, err
);
4069 err
= nfs4_handle_exception(NFS_SERVER(dir
), err
,
4071 } while (exception
.retry
);
4075 static void nfs4_proc_unlink_setup(struct rpc_message
*msg
, struct inode
*dir
)
4077 struct nfs_server
*server
= NFS_SERVER(dir
);
4078 struct nfs_removeargs
*args
= msg
->rpc_argp
;
4079 struct nfs_removeres
*res
= msg
->rpc_resp
;
4081 res
->server
= server
;
4082 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_REMOVE
];
4083 nfs4_init_sequence(&args
->seq_args
, &res
->seq_res
, 1);
4085 nfs_fattr_init(res
->dir_attr
);
4088 static void nfs4_proc_unlink_rpc_prepare(struct rpc_task
*task
, struct nfs_unlinkdata
*data
)
4090 nfs4_setup_sequence(NFS_SB(data
->dentry
->d_sb
),
4091 &data
->args
.seq_args
,
4096 static int nfs4_proc_unlink_done(struct rpc_task
*task
, struct inode
*dir
)
4098 struct nfs_unlinkdata
*data
= task
->tk_calldata
;
4099 struct nfs_removeres
*res
= &data
->res
;
4101 if (!nfs4_sequence_done(task
, &res
->seq_res
))
4103 if (nfs4_async_handle_error(task
, res
->server
, NULL
,
4104 &data
->timeout
) == -EAGAIN
)
4106 update_changeattr(dir
, &res
->cinfo
);
4110 static void nfs4_proc_rename_setup(struct rpc_message
*msg
, struct inode
*dir
)
4112 struct nfs_server
*server
= NFS_SERVER(dir
);
4113 struct nfs_renameargs
*arg
= msg
->rpc_argp
;
4114 struct nfs_renameres
*res
= msg
->rpc_resp
;
4116 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RENAME
];
4117 res
->server
= server
;
4118 nfs4_init_sequence(&arg
->seq_args
, &res
->seq_res
, 1);
4121 static void nfs4_proc_rename_rpc_prepare(struct rpc_task
*task
, struct nfs_renamedata
*data
)
4123 nfs4_setup_sequence(NFS_SERVER(data
->old_dir
),
4124 &data
->args
.seq_args
,
4129 static int nfs4_proc_rename_done(struct rpc_task
*task
, struct inode
*old_dir
,
4130 struct inode
*new_dir
)
4132 struct nfs_renamedata
*data
= task
->tk_calldata
;
4133 struct nfs_renameres
*res
= &data
->res
;
4135 if (!nfs4_sequence_done(task
, &res
->seq_res
))
4137 if (nfs4_async_handle_error(task
, res
->server
, NULL
, &data
->timeout
) == -EAGAIN
)
4140 update_changeattr(old_dir
, &res
->old_cinfo
);
4141 update_changeattr(new_dir
, &res
->new_cinfo
);
4145 static int _nfs4_proc_link(struct inode
*inode
, struct inode
*dir
, const struct qstr
*name
)
4147 struct nfs_server
*server
= NFS_SERVER(inode
);
4148 struct nfs4_link_arg arg
= {
4149 .fh
= NFS_FH(inode
),
4150 .dir_fh
= NFS_FH(dir
),
4152 .bitmask
= server
->attr_bitmask
,
4154 struct nfs4_link_res res
= {
4158 struct rpc_message msg
= {
4159 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LINK
],
4163 int status
= -ENOMEM
;
4165 res
.fattr
= nfs_alloc_fattr();
4166 if (res
.fattr
== NULL
)
4169 res
.label
= nfs4_label_alloc(server
, GFP_KERNEL
);
4170 if (IS_ERR(res
.label
)) {
4171 status
= PTR_ERR(res
.label
);
4174 arg
.bitmask
= nfs4_bitmask(server
, res
.label
);
4176 status
= nfs4_call_sync(server
->client
, server
, &msg
, &arg
.seq_args
, &res
.seq_res
, 1);
4178 update_changeattr(dir
, &res
.cinfo
);
4179 status
= nfs_post_op_update_inode(inode
, res
.fattr
);
4181 nfs_setsecurity(inode
, res
.fattr
, res
.label
);
4185 nfs4_label_free(res
.label
);
4188 nfs_free_fattr(res
.fattr
);
4192 static int nfs4_proc_link(struct inode
*inode
, struct inode
*dir
, const struct qstr
*name
)
4194 struct nfs4_exception exception
= { };
4197 err
= nfs4_handle_exception(NFS_SERVER(inode
),
4198 _nfs4_proc_link(inode
, dir
, name
),
4200 } while (exception
.retry
);
4204 struct nfs4_createdata
{
4205 struct rpc_message msg
;
4206 struct nfs4_create_arg arg
;
4207 struct nfs4_create_res res
;
4209 struct nfs_fattr fattr
;
4210 struct nfs4_label
*label
;
4213 static struct nfs4_createdata
*nfs4_alloc_createdata(struct inode
*dir
,
4214 const struct qstr
*name
, struct iattr
*sattr
, u32 ftype
)
4216 struct nfs4_createdata
*data
;
4218 data
= kzalloc(sizeof(*data
), GFP_KERNEL
);
4220 struct nfs_server
*server
= NFS_SERVER(dir
);
4222 data
->label
= nfs4_label_alloc(server
, GFP_KERNEL
);
4223 if (IS_ERR(data
->label
))
4226 data
->msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_CREATE
];
4227 data
->msg
.rpc_argp
= &data
->arg
;
4228 data
->msg
.rpc_resp
= &data
->res
;
4229 data
->arg
.dir_fh
= NFS_FH(dir
);
4230 data
->arg
.server
= server
;
4231 data
->arg
.name
= name
;
4232 data
->arg
.attrs
= sattr
;
4233 data
->arg
.ftype
= ftype
;
4234 data
->arg
.bitmask
= nfs4_bitmask(server
, data
->label
);
4235 data
->arg
.umask
= current_umask();
4236 data
->res
.server
= server
;
4237 data
->res
.fh
= &data
->fh
;
4238 data
->res
.fattr
= &data
->fattr
;
4239 data
->res
.label
= data
->label
;
4240 nfs_fattr_init(data
->res
.fattr
);
4248 static int nfs4_do_create(struct inode
*dir
, struct dentry
*dentry
, struct nfs4_createdata
*data
)
4250 int status
= nfs4_call_sync(NFS_SERVER(dir
)->client
, NFS_SERVER(dir
), &data
->msg
,
4251 &data
->arg
.seq_args
, &data
->res
.seq_res
, 1);
4253 update_changeattr(dir
, &data
->res
.dir_cinfo
);
4254 status
= nfs_instantiate(dentry
, data
->res
.fh
, data
->res
.fattr
, data
->res
.label
);
4259 static void nfs4_free_createdata(struct nfs4_createdata
*data
)
4261 nfs4_label_free(data
->label
);
4265 static int _nfs4_proc_symlink(struct inode
*dir
, struct dentry
*dentry
,
4266 struct page
*page
, unsigned int len
, struct iattr
*sattr
,
4267 struct nfs4_label
*label
)
4269 struct nfs4_createdata
*data
;
4270 int status
= -ENAMETOOLONG
;
4272 if (len
> NFS4_MAXPATHLEN
)
4276 data
= nfs4_alloc_createdata(dir
, &dentry
->d_name
, sattr
, NF4LNK
);
4280 data
->msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SYMLINK
];
4281 data
->arg
.u
.symlink
.pages
= &page
;
4282 data
->arg
.u
.symlink
.len
= len
;
4283 data
->arg
.label
= label
;
4285 status
= nfs4_do_create(dir
, dentry
, data
);
4287 nfs4_free_createdata(data
);
4292 static int nfs4_proc_symlink(struct inode
*dir
, struct dentry
*dentry
,
4293 struct page
*page
, unsigned int len
, struct iattr
*sattr
)
4295 struct nfs4_exception exception
= { };
4296 struct nfs4_label l
, *label
= NULL
;
4299 label
= nfs4_label_init_security(dir
, dentry
, sattr
, &l
);
4302 err
= _nfs4_proc_symlink(dir
, dentry
, page
, len
, sattr
, label
);
4303 trace_nfs4_symlink(dir
, &dentry
->d_name
, err
);
4304 err
= nfs4_handle_exception(NFS_SERVER(dir
), err
,
4306 } while (exception
.retry
);
4308 nfs4_label_release_security(label
);
4312 static int _nfs4_proc_mkdir(struct inode
*dir
, struct dentry
*dentry
,
4313 struct iattr
*sattr
, struct nfs4_label
*label
)
4315 struct nfs4_createdata
*data
;
4316 int status
= -ENOMEM
;
4318 data
= nfs4_alloc_createdata(dir
, &dentry
->d_name
, sattr
, NF4DIR
);
4322 data
->arg
.label
= label
;
4323 status
= nfs4_do_create(dir
, dentry
, data
);
4325 nfs4_free_createdata(data
);
4330 static int nfs4_proc_mkdir(struct inode
*dir
, struct dentry
*dentry
,
4331 struct iattr
*sattr
)
4333 struct nfs_server
*server
= NFS_SERVER(dir
);
4334 struct nfs4_exception exception
= { };
4335 struct nfs4_label l
, *label
= NULL
;
4338 label
= nfs4_label_init_security(dir
, dentry
, sattr
, &l
);
4340 if (!(server
->attr_bitmask
[2] & FATTR4_WORD2_MODE_UMASK
))
4341 sattr
->ia_mode
&= ~current_umask();
4343 err
= _nfs4_proc_mkdir(dir
, dentry
, sattr
, label
);
4344 trace_nfs4_mkdir(dir
, &dentry
->d_name
, err
);
4345 err
= nfs4_handle_exception(NFS_SERVER(dir
), err
,
4347 } while (exception
.retry
);
4348 nfs4_label_release_security(label
);
4353 static int _nfs4_proc_readdir(struct dentry
*dentry
, struct rpc_cred
*cred
,
4354 u64 cookie
, struct page
**pages
, unsigned int count
, int plus
)
4356 struct inode
*dir
= d_inode(dentry
);
4357 struct nfs4_readdir_arg args
= {
4362 .bitmask
= NFS_SERVER(d_inode(dentry
))->attr_bitmask
,
4365 struct nfs4_readdir_res res
;
4366 struct rpc_message msg
= {
4367 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_READDIR
],
4374 dprintk("%s: dentry = %pd2, cookie = %Lu\n", __func__
,
4376 (unsigned long long)cookie
);
4377 nfs4_setup_readdir(cookie
, NFS_I(dir
)->cookieverf
, dentry
, &args
);
4378 res
.pgbase
= args
.pgbase
;
4379 status
= nfs4_call_sync(NFS_SERVER(dir
)->client
, NFS_SERVER(dir
), &msg
, &args
.seq_args
, &res
.seq_res
, 0);
4381 memcpy(NFS_I(dir
)->cookieverf
, res
.verifier
.data
, NFS4_VERIFIER_SIZE
);
4382 status
+= args
.pgbase
;
4385 nfs_invalidate_atime(dir
);
4387 dprintk("%s: returns %d\n", __func__
, status
);
4391 static int nfs4_proc_readdir(struct dentry
*dentry
, struct rpc_cred
*cred
,
4392 u64 cookie
, struct page
**pages
, unsigned int count
, int plus
)
4394 struct nfs4_exception exception
= { };
4397 err
= _nfs4_proc_readdir(dentry
, cred
, cookie
,
4398 pages
, count
, plus
);
4399 trace_nfs4_readdir(d_inode(dentry
), err
);
4400 err
= nfs4_handle_exception(NFS_SERVER(d_inode(dentry
)), err
,
4402 } while (exception
.retry
);
4406 static int _nfs4_proc_mknod(struct inode
*dir
, struct dentry
*dentry
,
4407 struct iattr
*sattr
, struct nfs4_label
*label
, dev_t rdev
)
4409 struct nfs4_createdata
*data
;
4410 int mode
= sattr
->ia_mode
;
4411 int status
= -ENOMEM
;
4413 data
= nfs4_alloc_createdata(dir
, &dentry
->d_name
, sattr
, NF4SOCK
);
4418 data
->arg
.ftype
= NF4FIFO
;
4419 else if (S_ISBLK(mode
)) {
4420 data
->arg
.ftype
= NF4BLK
;
4421 data
->arg
.u
.device
.specdata1
= MAJOR(rdev
);
4422 data
->arg
.u
.device
.specdata2
= MINOR(rdev
);
4424 else if (S_ISCHR(mode
)) {
4425 data
->arg
.ftype
= NF4CHR
;
4426 data
->arg
.u
.device
.specdata1
= MAJOR(rdev
);
4427 data
->arg
.u
.device
.specdata2
= MINOR(rdev
);
4428 } else if (!S_ISSOCK(mode
)) {
4433 data
->arg
.label
= label
;
4434 status
= nfs4_do_create(dir
, dentry
, data
);
4436 nfs4_free_createdata(data
);
4441 static int nfs4_proc_mknod(struct inode
*dir
, struct dentry
*dentry
,
4442 struct iattr
*sattr
, dev_t rdev
)
4444 struct nfs_server
*server
= NFS_SERVER(dir
);
4445 struct nfs4_exception exception
= { };
4446 struct nfs4_label l
, *label
= NULL
;
4449 label
= nfs4_label_init_security(dir
, dentry
, sattr
, &l
);
4451 if (!(server
->attr_bitmask
[2] & FATTR4_WORD2_MODE_UMASK
))
4452 sattr
->ia_mode
&= ~current_umask();
4454 err
= _nfs4_proc_mknod(dir
, dentry
, sattr
, label
, rdev
);
4455 trace_nfs4_mknod(dir
, &dentry
->d_name
, err
);
4456 err
= nfs4_handle_exception(NFS_SERVER(dir
), err
,
4458 } while (exception
.retry
);
4460 nfs4_label_release_security(label
);
4465 static int _nfs4_proc_statfs(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
4466 struct nfs_fsstat
*fsstat
)
4468 struct nfs4_statfs_arg args
= {
4470 .bitmask
= server
->attr_bitmask
,
4472 struct nfs4_statfs_res res
= {
4475 struct rpc_message msg
= {
4476 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_STATFS
],
4481 nfs_fattr_init(fsstat
->fattr
);
4482 return nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
4485 static int nfs4_proc_statfs(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fsstat
*fsstat
)
4487 struct nfs4_exception exception
= { };
4490 err
= nfs4_handle_exception(server
,
4491 _nfs4_proc_statfs(server
, fhandle
, fsstat
),
4493 } while (exception
.retry
);
4497 static int _nfs4_do_fsinfo(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
4498 struct nfs_fsinfo
*fsinfo
)
4500 struct nfs4_fsinfo_arg args
= {
4502 .bitmask
= server
->attr_bitmask
,
4504 struct nfs4_fsinfo_res res
= {
4507 struct rpc_message msg
= {
4508 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_FSINFO
],
4513 return nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
4516 static int nfs4_do_fsinfo(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fsinfo
*fsinfo
)
4518 struct nfs4_exception exception
= { };
4519 unsigned long now
= jiffies
;
4523 err
= _nfs4_do_fsinfo(server
, fhandle
, fsinfo
);
4524 trace_nfs4_fsinfo(server
, fhandle
, fsinfo
->fattr
, err
);
4526 nfs4_set_lease_period(server
->nfs_client
,
4527 fsinfo
->lease_time
* HZ
,
4531 err
= nfs4_handle_exception(server
, err
, &exception
);
4532 } while (exception
.retry
);
4536 static int nfs4_proc_fsinfo(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fsinfo
*fsinfo
)
4540 nfs_fattr_init(fsinfo
->fattr
);
4541 error
= nfs4_do_fsinfo(server
, fhandle
, fsinfo
);
4543 /* block layout checks this! */
4544 server
->pnfs_blksize
= fsinfo
->blksize
;
4545 set_pnfs_layoutdriver(server
, fhandle
, fsinfo
);
4551 static int _nfs4_proc_pathconf(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
4552 struct nfs_pathconf
*pathconf
)
4554 struct nfs4_pathconf_arg args
= {
4556 .bitmask
= server
->attr_bitmask
,
4558 struct nfs4_pathconf_res res
= {
4559 .pathconf
= pathconf
,
4561 struct rpc_message msg
= {
4562 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_PATHCONF
],
4567 /* None of the pathconf attributes are mandatory to implement */
4568 if ((args
.bitmask
[0] & nfs4_pathconf_bitmap
[0]) == 0) {
4569 memset(pathconf
, 0, sizeof(*pathconf
));
4573 nfs_fattr_init(pathconf
->fattr
);
4574 return nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
4577 static int nfs4_proc_pathconf(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
4578 struct nfs_pathconf
*pathconf
)
4580 struct nfs4_exception exception
= { };
4584 err
= nfs4_handle_exception(server
,
4585 _nfs4_proc_pathconf(server
, fhandle
, pathconf
),
4587 } while (exception
.retry
);
4591 int nfs4_set_rw_stateid(nfs4_stateid
*stateid
,
4592 const struct nfs_open_context
*ctx
,
4593 const struct nfs_lock_context
*l_ctx
,
4596 return nfs4_select_rw_stateid(ctx
->state
, fmode
, l_ctx
, stateid
, NULL
);
4598 EXPORT_SYMBOL_GPL(nfs4_set_rw_stateid
);
4600 static bool nfs4_stateid_is_current(nfs4_stateid
*stateid
,
4601 const struct nfs_open_context
*ctx
,
4602 const struct nfs_lock_context
*l_ctx
,
4605 nfs4_stateid current_stateid
;
4607 /* If the current stateid represents a lost lock, then exit */
4608 if (nfs4_set_rw_stateid(¤t_stateid
, ctx
, l_ctx
, fmode
) == -EIO
)
4610 return nfs4_stateid_match(stateid
, ¤t_stateid
);
4613 static bool nfs4_error_stateid_expired(int err
)
4616 case -NFS4ERR_DELEG_REVOKED
:
4617 case -NFS4ERR_ADMIN_REVOKED
:
4618 case -NFS4ERR_BAD_STATEID
:
4619 case -NFS4ERR_STALE_STATEID
:
4620 case -NFS4ERR_OLD_STATEID
:
4621 case -NFS4ERR_OPENMODE
:
4622 case -NFS4ERR_EXPIRED
:
4628 static int nfs4_read_done_cb(struct rpc_task
*task
, struct nfs_pgio_header
*hdr
)
4630 struct nfs_server
*server
= NFS_SERVER(hdr
->inode
);
4632 trace_nfs4_read(hdr
, task
->tk_status
);
4633 if (task
->tk_status
< 0) {
4634 struct nfs4_exception exception
= {
4635 .inode
= hdr
->inode
,
4636 .state
= hdr
->args
.context
->state
,
4637 .stateid
= &hdr
->args
.stateid
,
4639 task
->tk_status
= nfs4_async_handle_exception(task
,
4640 server
, task
->tk_status
, &exception
);
4641 if (exception
.retry
) {
4642 rpc_restart_call_prepare(task
);
4647 if (task
->tk_status
> 0)
4648 renew_lease(server
, hdr
->timestamp
);
4652 static bool nfs4_read_stateid_changed(struct rpc_task
*task
,
4653 struct nfs_pgio_args
*args
)
4656 if (!nfs4_error_stateid_expired(task
->tk_status
) ||
4657 nfs4_stateid_is_current(&args
->stateid
,
4662 rpc_restart_call_prepare(task
);
4666 static int nfs4_read_done(struct rpc_task
*task
, struct nfs_pgio_header
*hdr
)
4669 dprintk("--> %s\n", __func__
);
4671 if (!nfs4_sequence_done(task
, &hdr
->res
.seq_res
))
4673 if (nfs4_read_stateid_changed(task
, &hdr
->args
))
4675 if (task
->tk_status
> 0)
4676 nfs_invalidate_atime(hdr
->inode
);
4677 return hdr
->pgio_done_cb
? hdr
->pgio_done_cb(task
, hdr
) :
4678 nfs4_read_done_cb(task
, hdr
);
4681 static void nfs4_proc_read_setup(struct nfs_pgio_header
*hdr
,
4682 struct rpc_message
*msg
)
4684 hdr
->timestamp
= jiffies
;
4685 if (!hdr
->pgio_done_cb
)
4686 hdr
->pgio_done_cb
= nfs4_read_done_cb
;
4687 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_READ
];
4688 nfs4_init_sequence(&hdr
->args
.seq_args
, &hdr
->res
.seq_res
, 0);
4691 static int nfs4_proc_pgio_rpc_prepare(struct rpc_task
*task
,
4692 struct nfs_pgio_header
*hdr
)
4694 if (nfs4_setup_sequence(NFS_SERVER(hdr
->inode
),
4695 &hdr
->args
.seq_args
,
4699 if (nfs4_set_rw_stateid(&hdr
->args
.stateid
, hdr
->args
.context
,
4700 hdr
->args
.lock_context
,
4701 hdr
->rw_ops
->rw_mode
) == -EIO
)
4703 if (unlikely(test_bit(NFS_CONTEXT_BAD
, &hdr
->args
.context
->flags
)))
4708 static int nfs4_write_done_cb(struct rpc_task
*task
,
4709 struct nfs_pgio_header
*hdr
)
4711 struct inode
*inode
= hdr
->inode
;
4713 trace_nfs4_write(hdr
, task
->tk_status
);
4714 if (task
->tk_status
< 0) {
4715 struct nfs4_exception exception
= {
4716 .inode
= hdr
->inode
,
4717 .state
= hdr
->args
.context
->state
,
4718 .stateid
= &hdr
->args
.stateid
,
4720 task
->tk_status
= nfs4_async_handle_exception(task
,
4721 NFS_SERVER(inode
), task
->tk_status
,
4723 if (exception
.retry
) {
4724 rpc_restart_call_prepare(task
);
4728 if (task
->tk_status
>= 0) {
4729 renew_lease(NFS_SERVER(inode
), hdr
->timestamp
);
4730 nfs_writeback_update_inode(hdr
);
4735 static bool nfs4_write_stateid_changed(struct rpc_task
*task
,
4736 struct nfs_pgio_args
*args
)
4739 if (!nfs4_error_stateid_expired(task
->tk_status
) ||
4740 nfs4_stateid_is_current(&args
->stateid
,
4745 rpc_restart_call_prepare(task
);
4749 static int nfs4_write_done(struct rpc_task
*task
, struct nfs_pgio_header
*hdr
)
4751 if (!nfs4_sequence_done(task
, &hdr
->res
.seq_res
))
4753 if (nfs4_write_stateid_changed(task
, &hdr
->args
))
4755 return hdr
->pgio_done_cb
? hdr
->pgio_done_cb(task
, hdr
) :
4756 nfs4_write_done_cb(task
, hdr
);
4760 bool nfs4_write_need_cache_consistency_data(struct nfs_pgio_header
*hdr
)
4762 /* Don't request attributes for pNFS or O_DIRECT writes */
4763 if (hdr
->ds_clp
!= NULL
|| hdr
->dreq
!= NULL
)
4765 /* Otherwise, request attributes if and only if we don't hold
4768 return nfs4_have_delegation(hdr
->inode
, FMODE_READ
) == 0;
4771 static void nfs4_proc_write_setup(struct nfs_pgio_header
*hdr
,
4772 struct rpc_message
*msg
)
4774 struct nfs_server
*server
= NFS_SERVER(hdr
->inode
);
4776 if (!nfs4_write_need_cache_consistency_data(hdr
)) {
4777 hdr
->args
.bitmask
= NULL
;
4778 hdr
->res
.fattr
= NULL
;
4780 hdr
->args
.bitmask
= server
->cache_consistency_bitmask
;
4782 if (!hdr
->pgio_done_cb
)
4783 hdr
->pgio_done_cb
= nfs4_write_done_cb
;
4784 hdr
->res
.server
= server
;
4785 hdr
->timestamp
= jiffies
;
4787 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_WRITE
];
4788 nfs4_init_sequence(&hdr
->args
.seq_args
, &hdr
->res
.seq_res
, 1);
4791 static void nfs4_proc_commit_rpc_prepare(struct rpc_task
*task
, struct nfs_commit_data
*data
)
4793 nfs4_setup_sequence(NFS_SERVER(data
->inode
),
4794 &data
->args
.seq_args
,
4799 static int nfs4_commit_done_cb(struct rpc_task
*task
, struct nfs_commit_data
*data
)
4801 struct inode
*inode
= data
->inode
;
4803 trace_nfs4_commit(data
, task
->tk_status
);
4804 if (nfs4_async_handle_error(task
, NFS_SERVER(inode
),
4805 NULL
, NULL
) == -EAGAIN
) {
4806 rpc_restart_call_prepare(task
);
4812 static int nfs4_commit_done(struct rpc_task
*task
, struct nfs_commit_data
*data
)
4814 if (!nfs4_sequence_done(task
, &data
->res
.seq_res
))
4816 return data
->commit_done_cb(task
, data
);
4819 static void nfs4_proc_commit_setup(struct nfs_commit_data
*data
, struct rpc_message
*msg
)
4821 struct nfs_server
*server
= NFS_SERVER(data
->inode
);
4823 if (data
->commit_done_cb
== NULL
)
4824 data
->commit_done_cb
= nfs4_commit_done_cb
;
4825 data
->res
.server
= server
;
4826 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_COMMIT
];
4827 nfs4_init_sequence(&data
->args
.seq_args
, &data
->res
.seq_res
, 1);
4830 struct nfs4_renewdata
{
4831 struct nfs_client
*client
;
4832 unsigned long timestamp
;
4836 * nfs4_proc_async_renew(): This is not one of the nfs_rpc_ops; it is a special
4837 * standalone procedure for queueing an asynchronous RENEW.
4839 static void nfs4_renew_release(void *calldata
)
4841 struct nfs4_renewdata
*data
= calldata
;
4842 struct nfs_client
*clp
= data
->client
;
4844 if (atomic_read(&clp
->cl_count
) > 1)
4845 nfs4_schedule_state_renewal(clp
);
4846 nfs_put_client(clp
);
4850 static void nfs4_renew_done(struct rpc_task
*task
, void *calldata
)
4852 struct nfs4_renewdata
*data
= calldata
;
4853 struct nfs_client
*clp
= data
->client
;
4854 unsigned long timestamp
= data
->timestamp
;
4856 trace_nfs4_renew_async(clp
, task
->tk_status
);
4857 switch (task
->tk_status
) {
4860 case -NFS4ERR_LEASE_MOVED
:
4861 nfs4_schedule_lease_moved_recovery(clp
);
4864 /* Unless we're shutting down, schedule state recovery! */
4865 if (test_bit(NFS_CS_RENEWD
, &clp
->cl_res_state
) == 0)
4867 if (task
->tk_status
!= NFS4ERR_CB_PATH_DOWN
) {
4868 nfs4_schedule_lease_recovery(clp
);
4871 nfs4_schedule_path_down_recovery(clp
);
4873 do_renew_lease(clp
, timestamp
);
4876 static const struct rpc_call_ops nfs4_renew_ops
= {
4877 .rpc_call_done
= nfs4_renew_done
,
4878 .rpc_release
= nfs4_renew_release
,
4881 static int nfs4_proc_async_renew(struct nfs_client
*clp
, struct rpc_cred
*cred
, unsigned renew_flags
)
4883 struct rpc_message msg
= {
4884 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RENEW
],
4888 struct nfs4_renewdata
*data
;
4890 if (renew_flags
== 0)
4892 if (!atomic_inc_not_zero(&clp
->cl_count
))
4894 data
= kmalloc(sizeof(*data
), GFP_NOFS
);
4898 data
->timestamp
= jiffies
;
4899 return rpc_call_async(clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
,
4900 &nfs4_renew_ops
, data
);
4903 static int nfs4_proc_renew(struct nfs_client
*clp
, struct rpc_cred
*cred
)
4905 struct rpc_message msg
= {
4906 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RENEW
],
4910 unsigned long now
= jiffies
;
4913 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
4916 do_renew_lease(clp
, now
);
4920 static inline int nfs4_server_supports_acls(struct nfs_server
*server
)
4922 return server
->caps
& NFS_CAP_ACLS
;
4925 /* Assuming that XATTR_SIZE_MAX is a multiple of PAGE_SIZE, and that
4926 * it's OK to put sizeof(void) * (XATTR_SIZE_MAX/PAGE_SIZE) bytes on
4929 #define NFS4ACL_MAXPAGES DIV_ROUND_UP(XATTR_SIZE_MAX, PAGE_SIZE)
4931 static int buf_to_pages_noslab(const void *buf
, size_t buflen
,
4932 struct page
**pages
)
4934 struct page
*newpage
, **spages
;
4940 len
= min_t(size_t, PAGE_SIZE
, buflen
);
4941 newpage
= alloc_page(GFP_KERNEL
);
4943 if (newpage
== NULL
)
4945 memcpy(page_address(newpage
), buf
, len
);
4950 } while (buflen
!= 0);
4956 __free_page(spages
[rc
-1]);
4960 struct nfs4_cached_acl
{
4966 static void nfs4_set_cached_acl(struct inode
*inode
, struct nfs4_cached_acl
*acl
)
4968 struct nfs_inode
*nfsi
= NFS_I(inode
);
4970 spin_lock(&inode
->i_lock
);
4971 kfree(nfsi
->nfs4_acl
);
4972 nfsi
->nfs4_acl
= acl
;
4973 spin_unlock(&inode
->i_lock
);
4976 static void nfs4_zap_acl_attr(struct inode
*inode
)
4978 nfs4_set_cached_acl(inode
, NULL
);
4981 static inline ssize_t
nfs4_read_cached_acl(struct inode
*inode
, char *buf
, size_t buflen
)
4983 struct nfs_inode
*nfsi
= NFS_I(inode
);
4984 struct nfs4_cached_acl
*acl
;
4987 spin_lock(&inode
->i_lock
);
4988 acl
= nfsi
->nfs4_acl
;
4991 if (buf
== NULL
) /* user is just asking for length */
4993 if (acl
->cached
== 0)
4995 ret
= -ERANGE
; /* see getxattr(2) man page */
4996 if (acl
->len
> buflen
)
4998 memcpy(buf
, acl
->data
, acl
->len
);
5002 spin_unlock(&inode
->i_lock
);
5006 static void nfs4_write_cached_acl(struct inode
*inode
, struct page
**pages
, size_t pgbase
, size_t acl_len
)
5008 struct nfs4_cached_acl
*acl
;
5009 size_t buflen
= sizeof(*acl
) + acl_len
;
5011 if (buflen
<= PAGE_SIZE
) {
5012 acl
= kmalloc(buflen
, GFP_KERNEL
);
5016 _copy_from_pages(acl
->data
, pages
, pgbase
, acl_len
);
5018 acl
= kmalloc(sizeof(*acl
), GFP_KERNEL
);
5025 nfs4_set_cached_acl(inode
, acl
);
5029 * The getxattr API returns the required buffer length when called with a
5030 * NULL buf. The NFSv4 acl tool then calls getxattr again after allocating
5031 * the required buf. On a NULL buf, we send a page of data to the server
5032 * guessing that the ACL request can be serviced by a page. If so, we cache
5033 * up to the page of ACL data, and the 2nd call to getxattr is serviced by
5034 * the cache. If not so, we throw away the page, and cache the required
5035 * length. The next getxattr call will then produce another round trip to
5036 * the server, this time with the input buf of the required size.
5038 static ssize_t
__nfs4_get_acl_uncached(struct inode
*inode
, void *buf
, size_t buflen
)
5040 struct page
*pages
[NFS4ACL_MAXPAGES
] = {NULL
, };
5041 struct nfs_getaclargs args
= {
5042 .fh
= NFS_FH(inode
),
5046 struct nfs_getaclres res
= {
5049 struct rpc_message msg
= {
5050 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GETACL
],
5054 unsigned int npages
= DIV_ROUND_UP(buflen
, PAGE_SIZE
);
5055 int ret
= -ENOMEM
, i
;
5057 /* As long as we're doing a round trip to the server anyway,
5058 * let's be prepared for a page of acl data. */
5061 if (npages
> ARRAY_SIZE(pages
))
5064 for (i
= 0; i
< npages
; i
++) {
5065 pages
[i
] = alloc_page(GFP_KERNEL
);
5070 /* for decoding across pages */
5071 res
.acl_scratch
= alloc_page(GFP_KERNEL
);
5072 if (!res
.acl_scratch
)
5075 args
.acl_len
= npages
* PAGE_SIZE
;
5077 dprintk("%s buf %p buflen %zu npages %d args.acl_len %zu\n",
5078 __func__
, buf
, buflen
, npages
, args
.acl_len
);
5079 ret
= nfs4_call_sync(NFS_SERVER(inode
)->client
, NFS_SERVER(inode
),
5080 &msg
, &args
.seq_args
, &res
.seq_res
, 0);
5084 /* Handle the case where the passed-in buffer is too short */
5085 if (res
.acl_flags
& NFS4_ACL_TRUNC
) {
5086 /* Did the user only issue a request for the acl length? */
5092 nfs4_write_cached_acl(inode
, pages
, res
.acl_data_offset
, res
.acl_len
);
5094 if (res
.acl_len
> buflen
) {
5098 _copy_from_pages(buf
, pages
, res
.acl_data_offset
, res
.acl_len
);
5103 for (i
= 0; i
< npages
; i
++)
5105 __free_page(pages
[i
]);
5106 if (res
.acl_scratch
)
5107 __free_page(res
.acl_scratch
);
5111 static ssize_t
nfs4_get_acl_uncached(struct inode
*inode
, void *buf
, size_t buflen
)
5113 struct nfs4_exception exception
= { };
5116 ret
= __nfs4_get_acl_uncached(inode
, buf
, buflen
);
5117 trace_nfs4_get_acl(inode
, ret
);
5120 ret
= nfs4_handle_exception(NFS_SERVER(inode
), ret
, &exception
);
5121 } while (exception
.retry
);
5125 static ssize_t
nfs4_proc_get_acl(struct inode
*inode
, void *buf
, size_t buflen
)
5127 struct nfs_server
*server
= NFS_SERVER(inode
);
5130 if (!nfs4_server_supports_acls(server
))
5132 ret
= nfs_revalidate_inode(server
, inode
);
5135 if (NFS_I(inode
)->cache_validity
& NFS_INO_INVALID_ACL
)
5136 nfs_zap_acl_cache(inode
);
5137 ret
= nfs4_read_cached_acl(inode
, buf
, buflen
);
5139 /* -ENOENT is returned if there is no ACL or if there is an ACL
5140 * but no cached acl data, just the acl length */
5142 return nfs4_get_acl_uncached(inode
, buf
, buflen
);
5145 static int __nfs4_proc_set_acl(struct inode
*inode
, const void *buf
, size_t buflen
)
5147 struct nfs_server
*server
= NFS_SERVER(inode
);
5148 struct page
*pages
[NFS4ACL_MAXPAGES
];
5149 struct nfs_setaclargs arg
= {
5150 .fh
= NFS_FH(inode
),
5154 struct nfs_setaclres res
;
5155 struct rpc_message msg
= {
5156 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETACL
],
5160 unsigned int npages
= DIV_ROUND_UP(buflen
, PAGE_SIZE
);
5163 if (!nfs4_server_supports_acls(server
))
5165 if (npages
> ARRAY_SIZE(pages
))
5167 i
= buf_to_pages_noslab(buf
, buflen
, arg
.acl_pages
);
5170 nfs4_inode_return_delegation(inode
);
5171 ret
= nfs4_call_sync(server
->client
, server
, &msg
, &arg
.seq_args
, &res
.seq_res
, 1);
5174 * Free each page after tx, so the only ref left is
5175 * held by the network stack
5178 put_page(pages
[i
-1]);
5181 * Acl update can result in inode attribute update.
5182 * so mark the attribute cache invalid.
5184 spin_lock(&inode
->i_lock
);
5185 NFS_I(inode
)->cache_validity
|= NFS_INO_INVALID_ATTR
;
5186 spin_unlock(&inode
->i_lock
);
5187 nfs_access_zap_cache(inode
);
5188 nfs_zap_acl_cache(inode
);
5192 static int nfs4_proc_set_acl(struct inode
*inode
, const void *buf
, size_t buflen
)
5194 struct nfs4_exception exception
= { };
5197 err
= __nfs4_proc_set_acl(inode
, buf
, buflen
);
5198 trace_nfs4_set_acl(inode
, err
);
5199 err
= nfs4_handle_exception(NFS_SERVER(inode
), err
,
5201 } while (exception
.retry
);
5205 #ifdef CONFIG_NFS_V4_SECURITY_LABEL
5206 static int _nfs4_get_security_label(struct inode
*inode
, void *buf
,
5209 struct nfs_server
*server
= NFS_SERVER(inode
);
5210 struct nfs_fattr fattr
;
5211 struct nfs4_label label
= {0, 0, buflen
, buf
};
5213 u32 bitmask
[3] = { 0, 0, FATTR4_WORD2_SECURITY_LABEL
};
5214 struct nfs4_getattr_arg arg
= {
5215 .fh
= NFS_FH(inode
),
5218 struct nfs4_getattr_res res
= {
5223 struct rpc_message msg
= {
5224 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GETATTR
],
5230 nfs_fattr_init(&fattr
);
5232 ret
= nfs4_call_sync(server
->client
, server
, &msg
, &arg
.seq_args
, &res
.seq_res
, 0);
5235 if (!(fattr
.valid
& NFS_ATTR_FATTR_V4_SECURITY_LABEL
))
5237 if (buflen
< label
.len
)
5242 static int nfs4_get_security_label(struct inode
*inode
, void *buf
,
5245 struct nfs4_exception exception
= { };
5248 if (!nfs_server_capable(inode
, NFS_CAP_SECURITY_LABEL
))
5252 err
= _nfs4_get_security_label(inode
, buf
, buflen
);
5253 trace_nfs4_get_security_label(inode
, err
);
5254 err
= nfs4_handle_exception(NFS_SERVER(inode
), err
,
5256 } while (exception
.retry
);
5260 static int _nfs4_do_set_security_label(struct inode
*inode
,
5261 struct nfs4_label
*ilabel
,
5262 struct nfs_fattr
*fattr
,
5263 struct nfs4_label
*olabel
)
5266 struct iattr sattr
= {0};
5267 struct nfs_server
*server
= NFS_SERVER(inode
);
5268 const u32 bitmask
[3] = { 0, 0, FATTR4_WORD2_SECURITY_LABEL
};
5269 struct nfs_setattrargs arg
= {
5270 .fh
= NFS_FH(inode
),
5276 struct nfs_setattrres res
= {
5281 struct rpc_message msg
= {
5282 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETATTR
],
5288 nfs4_stateid_copy(&arg
.stateid
, &zero_stateid
);
5290 status
= nfs4_call_sync(server
->client
, server
, &msg
, &arg
.seq_args
, &res
.seq_res
, 1);
5292 dprintk("%s failed: %d\n", __func__
, status
);
5297 static int nfs4_do_set_security_label(struct inode
*inode
,
5298 struct nfs4_label
*ilabel
,
5299 struct nfs_fattr
*fattr
,
5300 struct nfs4_label
*olabel
)
5302 struct nfs4_exception exception
= { };
5306 err
= _nfs4_do_set_security_label(inode
, ilabel
,
5308 trace_nfs4_set_security_label(inode
, err
);
5309 err
= nfs4_handle_exception(NFS_SERVER(inode
), err
,
5311 } while (exception
.retry
);
5316 nfs4_set_security_label(struct inode
*inode
, const void *buf
, size_t buflen
)
5318 struct nfs4_label ilabel
, *olabel
= NULL
;
5319 struct nfs_fattr fattr
;
5320 struct rpc_cred
*cred
;
5323 if (!nfs_server_capable(inode
, NFS_CAP_SECURITY_LABEL
))
5326 nfs_fattr_init(&fattr
);
5330 ilabel
.label
= (char *)buf
;
5331 ilabel
.len
= buflen
;
5333 cred
= rpc_lookup_cred();
5335 return PTR_ERR(cred
);
5337 olabel
= nfs4_label_alloc(NFS_SERVER(inode
), GFP_KERNEL
);
5338 if (IS_ERR(olabel
)) {
5339 status
= -PTR_ERR(olabel
);
5343 status
= nfs4_do_set_security_label(inode
, &ilabel
, &fattr
, olabel
);
5345 nfs_setsecurity(inode
, &fattr
, olabel
);
5347 nfs4_label_free(olabel
);
5352 #endif /* CONFIG_NFS_V4_SECURITY_LABEL */
5355 static void nfs4_init_boot_verifier(const struct nfs_client
*clp
,
5356 nfs4_verifier
*bootverf
)
5360 if (test_bit(NFS4CLNT_PURGE_STATE
, &clp
->cl_state
)) {
5361 /* An impossible timestamp guarantees this value
5362 * will never match a generated boot time. */
5363 verf
[0] = cpu_to_be32(U32_MAX
);
5364 verf
[1] = cpu_to_be32(U32_MAX
);
5366 struct nfs_net
*nn
= net_generic(clp
->cl_net
, nfs_net_id
);
5367 u64 ns
= ktime_to_ns(nn
->boot_time
);
5369 verf
[0] = cpu_to_be32(ns
>> 32);
5370 verf
[1] = cpu_to_be32(ns
);
5372 memcpy(bootverf
->data
, verf
, sizeof(bootverf
->data
));
5376 nfs4_init_nonuniform_client_string(struct nfs_client
*clp
)
5381 if (clp
->cl_owner_id
!= NULL
)
5385 len
= 14 + strlen(clp
->cl_ipaddr
) + 1 +
5386 strlen(rpc_peeraddr2str(clp
->cl_rpcclient
, RPC_DISPLAY_ADDR
)) +
5388 strlen(rpc_peeraddr2str(clp
->cl_rpcclient
, RPC_DISPLAY_PROTO
)) +
5392 if (len
> NFS4_OPAQUE_LIMIT
+ 1)
5396 * Since this string is allocated at mount time, and held until the
5397 * nfs_client is destroyed, we can use GFP_KERNEL here w/o worrying
5398 * about a memory-reclaim deadlock.
5400 str
= kmalloc(len
, GFP_KERNEL
);
5405 scnprintf(str
, len
, "Linux NFSv4.0 %s/%s %s",
5407 rpc_peeraddr2str(clp
->cl_rpcclient
, RPC_DISPLAY_ADDR
),
5408 rpc_peeraddr2str(clp
->cl_rpcclient
, RPC_DISPLAY_PROTO
));
5411 clp
->cl_owner_id
= str
;
5416 nfs4_init_uniquifier_client_string(struct nfs_client
*clp
)
5421 len
= 10 + 10 + 1 + 10 + 1 +
5422 strlen(nfs4_client_id_uniquifier
) + 1 +
5423 strlen(clp
->cl_rpcclient
->cl_nodename
) + 1;
5425 if (len
> NFS4_OPAQUE_LIMIT
+ 1)
5429 * Since this string is allocated at mount time, and held until the
5430 * nfs_client is destroyed, we can use GFP_KERNEL here w/o worrying
5431 * about a memory-reclaim deadlock.
5433 str
= kmalloc(len
, GFP_KERNEL
);
5437 scnprintf(str
, len
, "Linux NFSv%u.%u %s/%s",
5438 clp
->rpc_ops
->version
, clp
->cl_minorversion
,
5439 nfs4_client_id_uniquifier
,
5440 clp
->cl_rpcclient
->cl_nodename
);
5441 clp
->cl_owner_id
= str
;
5446 nfs4_init_uniform_client_string(struct nfs_client
*clp
)
5451 if (clp
->cl_owner_id
!= NULL
)
5454 if (nfs4_client_id_uniquifier
[0] != '\0')
5455 return nfs4_init_uniquifier_client_string(clp
);
5457 len
= 10 + 10 + 1 + 10 + 1 +
5458 strlen(clp
->cl_rpcclient
->cl_nodename
) + 1;
5460 if (len
> NFS4_OPAQUE_LIMIT
+ 1)
5464 * Since this string is allocated at mount time, and held until the
5465 * nfs_client is destroyed, we can use GFP_KERNEL here w/o worrying
5466 * about a memory-reclaim deadlock.
5468 str
= kmalloc(len
, GFP_KERNEL
);
5472 scnprintf(str
, len
, "Linux NFSv%u.%u %s",
5473 clp
->rpc_ops
->version
, clp
->cl_minorversion
,
5474 clp
->cl_rpcclient
->cl_nodename
);
5475 clp
->cl_owner_id
= str
;
5480 * nfs4_callback_up_net() starts only "tcp" and "tcp6" callback
5481 * services. Advertise one based on the address family of the
5485 nfs4_init_callback_netid(const struct nfs_client
*clp
, char *buf
, size_t len
)
5487 if (strchr(clp
->cl_ipaddr
, ':') != NULL
)
5488 return scnprintf(buf
, len
, "tcp6");
5490 return scnprintf(buf
, len
, "tcp");
5493 static void nfs4_setclientid_done(struct rpc_task
*task
, void *calldata
)
5495 struct nfs4_setclientid
*sc
= calldata
;
5497 if (task
->tk_status
== 0)
5498 sc
->sc_cred
= get_rpccred(task
->tk_rqstp
->rq_cred
);
5501 static const struct rpc_call_ops nfs4_setclientid_ops
= {
5502 .rpc_call_done
= nfs4_setclientid_done
,
5506 * nfs4_proc_setclientid - Negotiate client ID
5507 * @clp: state data structure
5508 * @program: RPC program for NFSv4 callback service
5509 * @port: IP port number for NFS4 callback service
5510 * @cred: RPC credential to use for this call
5511 * @res: where to place the result
5513 * Returns zero, a negative errno, or a negative NFS4ERR status code.
5515 int nfs4_proc_setclientid(struct nfs_client
*clp
, u32 program
,
5516 unsigned short port
, struct rpc_cred
*cred
,
5517 struct nfs4_setclientid_res
*res
)
5519 nfs4_verifier sc_verifier
;
5520 struct nfs4_setclientid setclientid
= {
5521 .sc_verifier
= &sc_verifier
,
5525 struct rpc_message msg
= {
5526 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETCLIENTID
],
5527 .rpc_argp
= &setclientid
,
5531 struct rpc_task
*task
;
5532 struct rpc_task_setup task_setup_data
= {
5533 .rpc_client
= clp
->cl_rpcclient
,
5534 .rpc_message
= &msg
,
5535 .callback_ops
= &nfs4_setclientid_ops
,
5536 .callback_data
= &setclientid
,
5537 .flags
= RPC_TASK_TIMEOUT
,
5541 /* nfs_client_id4 */
5542 nfs4_init_boot_verifier(clp
, &sc_verifier
);
5544 if (test_bit(NFS_CS_MIGRATION
, &clp
->cl_flags
))
5545 status
= nfs4_init_uniform_client_string(clp
);
5547 status
= nfs4_init_nonuniform_client_string(clp
);
5553 setclientid
.sc_netid_len
=
5554 nfs4_init_callback_netid(clp
,
5555 setclientid
.sc_netid
,
5556 sizeof(setclientid
.sc_netid
));
5557 setclientid
.sc_uaddr_len
= scnprintf(setclientid
.sc_uaddr
,
5558 sizeof(setclientid
.sc_uaddr
), "%s.%u.%u",
5559 clp
->cl_ipaddr
, port
>> 8, port
& 255);
5561 dprintk("NFS call setclientid auth=%s, '%s'\n",
5562 clp
->cl_rpcclient
->cl_auth
->au_ops
->au_name
,
5564 task
= rpc_run_task(&task_setup_data
);
5566 status
= PTR_ERR(task
);
5569 status
= task
->tk_status
;
5570 if (setclientid
.sc_cred
) {
5571 clp
->cl_acceptor
= rpcauth_stringify_acceptor(setclientid
.sc_cred
);
5572 put_rpccred(setclientid
.sc_cred
);
5576 trace_nfs4_setclientid(clp
, status
);
5577 dprintk("NFS reply setclientid: %d\n", status
);
5582 * nfs4_proc_setclientid_confirm - Confirm client ID
5583 * @clp: state data structure
5584 * @res: result of a previous SETCLIENTID
5585 * @cred: RPC credential to use for this call
5587 * Returns zero, a negative errno, or a negative NFS4ERR status code.
5589 int nfs4_proc_setclientid_confirm(struct nfs_client
*clp
,
5590 struct nfs4_setclientid_res
*arg
,
5591 struct rpc_cred
*cred
)
5593 struct rpc_message msg
= {
5594 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETCLIENTID_CONFIRM
],
5600 dprintk("NFS call setclientid_confirm auth=%s, (client ID %llx)\n",
5601 clp
->cl_rpcclient
->cl_auth
->au_ops
->au_name
,
5603 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
5604 trace_nfs4_setclientid_confirm(clp
, status
);
5605 dprintk("NFS reply setclientid_confirm: %d\n", status
);
5609 struct nfs4_delegreturndata
{
5610 struct nfs4_delegreturnargs args
;
5611 struct nfs4_delegreturnres res
;
5613 nfs4_stateid stateid
;
5614 unsigned long timestamp
;
5616 struct nfs4_layoutreturn_args arg
;
5617 struct nfs4_layoutreturn_res res
;
5618 struct nfs4_xdr_opaque_data ld_private
;
5622 struct nfs_fattr fattr
;
5624 struct inode
*inode
;
5627 static void nfs4_delegreturn_done(struct rpc_task
*task
, void *calldata
)
5629 struct nfs4_delegreturndata
*data
= calldata
;
5631 if (!nfs4_sequence_done(task
, &data
->res
.seq_res
))
5634 trace_nfs4_delegreturn_exit(&data
->args
, &data
->res
, task
->tk_status
);
5636 /* Handle Layoutreturn errors */
5637 if (data
->args
.lr_args
&& task
->tk_status
!= 0) {
5638 switch(data
->res
.lr_ret
) {
5640 data
->res
.lr_ret
= -NFS4ERR_NOMATCHING_LAYOUT
;
5643 data
->args
.lr_args
= NULL
;
5644 data
->res
.lr_res
= NULL
;
5646 case -NFS4ERR_ADMIN_REVOKED
:
5647 case -NFS4ERR_DELEG_REVOKED
:
5648 case -NFS4ERR_EXPIRED
:
5649 case -NFS4ERR_BAD_STATEID
:
5650 case -NFS4ERR_OLD_STATEID
:
5651 case -NFS4ERR_UNKNOWN_LAYOUTTYPE
:
5652 case -NFS4ERR_WRONG_CRED
:
5653 data
->args
.lr_args
= NULL
;
5654 data
->res
.lr_res
= NULL
;
5655 data
->res
.lr_ret
= 0;
5656 rpc_restart_call_prepare(task
);
5661 switch (task
->tk_status
) {
5663 renew_lease(data
->res
.server
, data
->timestamp
);
5665 case -NFS4ERR_ADMIN_REVOKED
:
5666 case -NFS4ERR_DELEG_REVOKED
:
5667 case -NFS4ERR_EXPIRED
:
5668 nfs4_free_revoked_stateid(data
->res
.server
,
5670 task
->tk_msg
.rpc_cred
);
5671 case -NFS4ERR_BAD_STATEID
:
5672 case -NFS4ERR_OLD_STATEID
:
5673 case -NFS4ERR_STALE_STATEID
:
5674 task
->tk_status
= 0;
5677 if (nfs4_async_handle_error(task
, data
->res
.server
,
5678 NULL
, NULL
) == -EAGAIN
) {
5679 rpc_restart_call_prepare(task
);
5683 data
->rpc_status
= task
->tk_status
;
5686 static void nfs4_delegreturn_release(void *calldata
)
5688 struct nfs4_delegreturndata
*data
= calldata
;
5689 struct inode
*inode
= data
->inode
;
5693 pnfs_roc_release(&data
->lr
.arg
, &data
->lr
.res
,
5695 nfs_iput_and_deactive(inode
);
5700 static void nfs4_delegreturn_prepare(struct rpc_task
*task
, void *data
)
5702 struct nfs4_delegreturndata
*d_data
;
5704 d_data
= (struct nfs4_delegreturndata
*)data
;
5706 if (!d_data
->lr
.roc
&& nfs4_wait_on_layoutreturn(d_data
->inode
, task
))
5709 nfs4_setup_sequence(d_data
->res
.server
,
5710 &d_data
->args
.seq_args
,
5711 &d_data
->res
.seq_res
,
5715 static const struct rpc_call_ops nfs4_delegreturn_ops
= {
5716 .rpc_call_prepare
= nfs4_delegreturn_prepare
,
5717 .rpc_call_done
= nfs4_delegreturn_done
,
5718 .rpc_release
= nfs4_delegreturn_release
,
5721 static int _nfs4_proc_delegreturn(struct inode
*inode
, struct rpc_cred
*cred
, const nfs4_stateid
*stateid
, int issync
)
5723 struct nfs4_delegreturndata
*data
;
5724 struct nfs_server
*server
= NFS_SERVER(inode
);
5725 struct rpc_task
*task
;
5726 struct rpc_message msg
= {
5727 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_DELEGRETURN
],
5730 struct rpc_task_setup task_setup_data
= {
5731 .rpc_client
= server
->client
,
5732 .rpc_message
= &msg
,
5733 .callback_ops
= &nfs4_delegreturn_ops
,
5734 .flags
= RPC_TASK_ASYNC
,
5738 data
= kzalloc(sizeof(*data
), GFP_NOFS
);
5741 nfs4_init_sequence(&data
->args
.seq_args
, &data
->res
.seq_res
, 1);
5743 nfs4_state_protect(server
->nfs_client
,
5744 NFS_SP4_MACH_CRED_CLEANUP
,
5745 &task_setup_data
.rpc_client
, &msg
);
5747 data
->args
.fhandle
= &data
->fh
;
5748 data
->args
.stateid
= &data
->stateid
;
5749 data
->args
.bitmask
= server
->cache_consistency_bitmask
;
5750 nfs_copy_fh(&data
->fh
, NFS_FH(inode
));
5751 nfs4_stateid_copy(&data
->stateid
, stateid
);
5752 data
->res
.fattr
= &data
->fattr
;
5753 data
->res
.server
= server
;
5754 data
->res
.lr_ret
= -NFS4ERR_NOMATCHING_LAYOUT
;
5755 data
->lr
.arg
.ld_private
= &data
->lr
.ld_private
;
5756 nfs_fattr_init(data
->res
.fattr
);
5757 data
->timestamp
= jiffies
;
5758 data
->rpc_status
= 0;
5759 data
->lr
.roc
= pnfs_roc(inode
, &data
->lr
.arg
, &data
->lr
.res
, cred
);
5760 data
->inode
= nfs_igrab_and_active(inode
);
5763 data
->args
.lr_args
= &data
->lr
.arg
;
5764 data
->res
.lr_res
= &data
->lr
.res
;
5766 } else if (data
->lr
.roc
) {
5767 pnfs_roc_release(&data
->lr
.arg
, &data
->lr
.res
, 0);
5768 data
->lr
.roc
= false;
5771 task_setup_data
.callback_data
= data
;
5772 msg
.rpc_argp
= &data
->args
;
5773 msg
.rpc_resp
= &data
->res
;
5774 task
= rpc_run_task(&task_setup_data
);
5776 return PTR_ERR(task
);
5779 status
= nfs4_wait_for_completion_rpc_task(task
);
5782 status
= data
->rpc_status
;
5784 nfs_post_op_update_inode_force_wcc(inode
, &data
->fattr
);
5786 nfs_refresh_inode(inode
, &data
->fattr
);
5792 int nfs4_proc_delegreturn(struct inode
*inode
, struct rpc_cred
*cred
, const nfs4_stateid
*stateid
, int issync
)
5794 struct nfs_server
*server
= NFS_SERVER(inode
);
5795 struct nfs4_exception exception
= { };
5798 err
= _nfs4_proc_delegreturn(inode
, cred
, stateid
, issync
);
5799 trace_nfs4_delegreturn(inode
, stateid
, err
);
5801 case -NFS4ERR_STALE_STATEID
:
5802 case -NFS4ERR_EXPIRED
:
5806 err
= nfs4_handle_exception(server
, err
, &exception
);
5807 } while (exception
.retry
);
5811 static int _nfs4_proc_getlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
5813 struct inode
*inode
= state
->inode
;
5814 struct nfs_server
*server
= NFS_SERVER(inode
);
5815 struct nfs_client
*clp
= server
->nfs_client
;
5816 struct nfs_lockt_args arg
= {
5817 .fh
= NFS_FH(inode
),
5820 struct nfs_lockt_res res
= {
5823 struct rpc_message msg
= {
5824 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOCKT
],
5827 .rpc_cred
= state
->owner
->so_cred
,
5829 struct nfs4_lock_state
*lsp
;
5832 arg
.lock_owner
.clientid
= clp
->cl_clientid
;
5833 status
= nfs4_set_lock_state(state
, request
);
5836 lsp
= request
->fl_u
.nfs4_fl
.owner
;
5837 arg
.lock_owner
.id
= lsp
->ls_seqid
.owner_id
;
5838 arg
.lock_owner
.s_dev
= server
->s_dev
;
5839 status
= nfs4_call_sync(server
->client
, server
, &msg
, &arg
.seq_args
, &res
.seq_res
, 1);
5842 request
->fl_type
= F_UNLCK
;
5844 case -NFS4ERR_DENIED
:
5847 request
->fl_ops
->fl_release_private(request
);
5848 request
->fl_ops
= NULL
;
5853 static int nfs4_proc_getlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
5855 struct nfs4_exception exception
= { };
5859 err
= _nfs4_proc_getlk(state
, cmd
, request
);
5860 trace_nfs4_get_lock(request
, state
, cmd
, err
);
5861 err
= nfs4_handle_exception(NFS_SERVER(state
->inode
), err
,
5863 } while (exception
.retry
);
5867 struct nfs4_unlockdata
{
5868 struct nfs_locku_args arg
;
5869 struct nfs_locku_res res
;
5870 struct nfs4_lock_state
*lsp
;
5871 struct nfs_open_context
*ctx
;
5872 struct file_lock fl
;
5873 struct nfs_server
*server
;
5874 unsigned long timestamp
;
5877 static struct nfs4_unlockdata
*nfs4_alloc_unlockdata(struct file_lock
*fl
,
5878 struct nfs_open_context
*ctx
,
5879 struct nfs4_lock_state
*lsp
,
5880 struct nfs_seqid
*seqid
)
5882 struct nfs4_unlockdata
*p
;
5883 struct inode
*inode
= lsp
->ls_state
->inode
;
5885 p
= kzalloc(sizeof(*p
), GFP_NOFS
);
5888 p
->arg
.fh
= NFS_FH(inode
);
5890 p
->arg
.seqid
= seqid
;
5891 p
->res
.seqid
= seqid
;
5893 atomic_inc(&lsp
->ls_count
);
5894 /* Ensure we don't close file until we're done freeing locks! */
5895 p
->ctx
= get_nfs_open_context(ctx
);
5896 memcpy(&p
->fl
, fl
, sizeof(p
->fl
));
5897 p
->server
= NFS_SERVER(inode
);
5901 static void nfs4_locku_release_calldata(void *data
)
5903 struct nfs4_unlockdata
*calldata
= data
;
5904 nfs_free_seqid(calldata
->arg
.seqid
);
5905 nfs4_put_lock_state(calldata
->lsp
);
5906 put_nfs_open_context(calldata
->ctx
);
5910 static void nfs4_locku_done(struct rpc_task
*task
, void *data
)
5912 struct nfs4_unlockdata
*calldata
= data
;
5914 if (!nfs4_sequence_done(task
, &calldata
->res
.seq_res
))
5916 switch (task
->tk_status
) {
5918 renew_lease(calldata
->server
, calldata
->timestamp
);
5919 locks_lock_inode_wait(calldata
->lsp
->ls_state
->inode
, &calldata
->fl
);
5920 if (nfs4_update_lock_stateid(calldata
->lsp
,
5921 &calldata
->res
.stateid
))
5923 case -NFS4ERR_ADMIN_REVOKED
:
5924 case -NFS4ERR_EXPIRED
:
5925 nfs4_free_revoked_stateid(calldata
->server
,
5926 &calldata
->arg
.stateid
,
5927 task
->tk_msg
.rpc_cred
);
5928 case -NFS4ERR_BAD_STATEID
:
5929 case -NFS4ERR_OLD_STATEID
:
5930 case -NFS4ERR_STALE_STATEID
:
5931 if (!nfs4_stateid_match(&calldata
->arg
.stateid
,
5932 &calldata
->lsp
->ls_stateid
))
5933 rpc_restart_call_prepare(task
);
5936 if (nfs4_async_handle_error(task
, calldata
->server
,
5937 NULL
, NULL
) == -EAGAIN
)
5938 rpc_restart_call_prepare(task
);
5940 nfs_release_seqid(calldata
->arg
.seqid
);
5943 static void nfs4_locku_prepare(struct rpc_task
*task
, void *data
)
5945 struct nfs4_unlockdata
*calldata
= data
;
5947 if (nfs_wait_on_sequence(calldata
->arg
.seqid
, task
) != 0)
5949 nfs4_stateid_copy(&calldata
->arg
.stateid
, &calldata
->lsp
->ls_stateid
);
5950 if (test_bit(NFS_LOCK_INITIALIZED
, &calldata
->lsp
->ls_flags
) == 0) {
5951 /* Note: exit _without_ running nfs4_locku_done */
5954 calldata
->timestamp
= jiffies
;
5955 if (nfs4_setup_sequence(calldata
->server
,
5956 &calldata
->arg
.seq_args
,
5957 &calldata
->res
.seq_res
,
5959 nfs_release_seqid(calldata
->arg
.seqid
);
5962 task
->tk_action
= NULL
;
5964 nfs4_sequence_done(task
, &calldata
->res
.seq_res
);
5967 static const struct rpc_call_ops nfs4_locku_ops
= {
5968 .rpc_call_prepare
= nfs4_locku_prepare
,
5969 .rpc_call_done
= nfs4_locku_done
,
5970 .rpc_release
= nfs4_locku_release_calldata
,
5973 static struct rpc_task
*nfs4_do_unlck(struct file_lock
*fl
,
5974 struct nfs_open_context
*ctx
,
5975 struct nfs4_lock_state
*lsp
,
5976 struct nfs_seqid
*seqid
)
5978 struct nfs4_unlockdata
*data
;
5979 struct rpc_message msg
= {
5980 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOCKU
],
5981 .rpc_cred
= ctx
->cred
,
5983 struct rpc_task_setup task_setup_data
= {
5984 .rpc_client
= NFS_CLIENT(lsp
->ls_state
->inode
),
5985 .rpc_message
= &msg
,
5986 .callback_ops
= &nfs4_locku_ops
,
5987 .workqueue
= nfsiod_workqueue
,
5988 .flags
= RPC_TASK_ASYNC
,
5991 nfs4_state_protect(NFS_SERVER(lsp
->ls_state
->inode
)->nfs_client
,
5992 NFS_SP4_MACH_CRED_CLEANUP
, &task_setup_data
.rpc_client
, &msg
);
5994 /* Ensure this is an unlock - when canceling a lock, the
5995 * canceled lock is passed in, and it won't be an unlock.
5997 fl
->fl_type
= F_UNLCK
;
5999 data
= nfs4_alloc_unlockdata(fl
, ctx
, lsp
, seqid
);
6001 nfs_free_seqid(seqid
);
6002 return ERR_PTR(-ENOMEM
);
6005 nfs4_init_sequence(&data
->arg
.seq_args
, &data
->res
.seq_res
, 1);
6006 msg
.rpc_argp
= &data
->arg
;
6007 msg
.rpc_resp
= &data
->res
;
6008 task_setup_data
.callback_data
= data
;
6009 return rpc_run_task(&task_setup_data
);
6012 static int nfs4_proc_unlck(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
6014 struct inode
*inode
= state
->inode
;
6015 struct nfs4_state_owner
*sp
= state
->owner
;
6016 struct nfs_inode
*nfsi
= NFS_I(inode
);
6017 struct nfs_seqid
*seqid
;
6018 struct nfs4_lock_state
*lsp
;
6019 struct rpc_task
*task
;
6020 struct nfs_seqid
*(*alloc_seqid
)(struct nfs_seqid_counter
*, gfp_t
);
6022 unsigned char fl_flags
= request
->fl_flags
;
6024 status
= nfs4_set_lock_state(state
, request
);
6025 /* Unlock _before_ we do the RPC call */
6026 request
->fl_flags
|= FL_EXISTS
;
6027 /* Exclude nfs_delegation_claim_locks() */
6028 mutex_lock(&sp
->so_delegreturn_mutex
);
6029 /* Exclude nfs4_reclaim_open_stateid() - note nesting! */
6030 down_read(&nfsi
->rwsem
);
6031 if (locks_lock_inode_wait(inode
, request
) == -ENOENT
) {
6032 up_read(&nfsi
->rwsem
);
6033 mutex_unlock(&sp
->so_delegreturn_mutex
);
6036 up_read(&nfsi
->rwsem
);
6037 mutex_unlock(&sp
->so_delegreturn_mutex
);
6040 /* Is this a delegated lock? */
6041 lsp
= request
->fl_u
.nfs4_fl
.owner
;
6042 if (test_bit(NFS_LOCK_INITIALIZED
, &lsp
->ls_flags
) == 0)
6044 alloc_seqid
= NFS_SERVER(inode
)->nfs_client
->cl_mvops
->alloc_seqid
;
6045 seqid
= alloc_seqid(&lsp
->ls_seqid
, GFP_KERNEL
);
6049 task
= nfs4_do_unlck(request
, nfs_file_open_context(request
->fl_file
), lsp
, seqid
);
6050 status
= PTR_ERR(task
);
6053 status
= nfs4_wait_for_completion_rpc_task(task
);
6056 request
->fl_flags
= fl_flags
;
6057 trace_nfs4_unlock(request
, state
, F_SETLK
, status
);
6061 struct nfs4_lockdata
{
6062 struct nfs_lock_args arg
;
6063 struct nfs_lock_res res
;
6064 struct nfs4_lock_state
*lsp
;
6065 struct nfs_open_context
*ctx
;
6066 struct file_lock fl
;
6067 unsigned long timestamp
;
6070 struct nfs_server
*server
;
6073 static struct nfs4_lockdata
*nfs4_alloc_lockdata(struct file_lock
*fl
,
6074 struct nfs_open_context
*ctx
, struct nfs4_lock_state
*lsp
,
6077 struct nfs4_lockdata
*p
;
6078 struct inode
*inode
= lsp
->ls_state
->inode
;
6079 struct nfs_server
*server
= NFS_SERVER(inode
);
6080 struct nfs_seqid
*(*alloc_seqid
)(struct nfs_seqid_counter
*, gfp_t
);
6082 p
= kzalloc(sizeof(*p
), gfp_mask
);
6086 p
->arg
.fh
= NFS_FH(inode
);
6088 p
->arg
.open_seqid
= nfs_alloc_seqid(&lsp
->ls_state
->owner
->so_seqid
, gfp_mask
);
6089 if (IS_ERR(p
->arg
.open_seqid
))
6091 alloc_seqid
= server
->nfs_client
->cl_mvops
->alloc_seqid
;
6092 p
->arg
.lock_seqid
= alloc_seqid(&lsp
->ls_seqid
, gfp_mask
);
6093 if (IS_ERR(p
->arg
.lock_seqid
))
6094 goto out_free_seqid
;
6095 p
->arg
.lock_owner
.clientid
= server
->nfs_client
->cl_clientid
;
6096 p
->arg
.lock_owner
.id
= lsp
->ls_seqid
.owner_id
;
6097 p
->arg
.lock_owner
.s_dev
= server
->s_dev
;
6098 p
->res
.lock_seqid
= p
->arg
.lock_seqid
;
6101 atomic_inc(&lsp
->ls_count
);
6102 p
->ctx
= get_nfs_open_context(ctx
);
6103 get_file(fl
->fl_file
);
6104 memcpy(&p
->fl
, fl
, sizeof(p
->fl
));
6107 nfs_free_seqid(p
->arg
.open_seqid
);
6113 static void nfs4_lock_prepare(struct rpc_task
*task
, void *calldata
)
6115 struct nfs4_lockdata
*data
= calldata
;
6116 struct nfs4_state
*state
= data
->lsp
->ls_state
;
6118 dprintk("%s: begin!\n", __func__
);
6119 if (nfs_wait_on_sequence(data
->arg
.lock_seqid
, task
) != 0)
6121 /* Do we need to do an open_to_lock_owner? */
6122 if (!test_bit(NFS_LOCK_INITIALIZED
, &data
->lsp
->ls_flags
)) {
6123 if (nfs_wait_on_sequence(data
->arg
.open_seqid
, task
) != 0) {
6124 goto out_release_lock_seqid
;
6126 nfs4_stateid_copy(&data
->arg
.open_stateid
,
6127 &state
->open_stateid
);
6128 data
->arg
.new_lock_owner
= 1;
6129 data
->res
.open_seqid
= data
->arg
.open_seqid
;
6131 data
->arg
.new_lock_owner
= 0;
6132 nfs4_stateid_copy(&data
->arg
.lock_stateid
,
6133 &data
->lsp
->ls_stateid
);
6135 if (!nfs4_valid_open_stateid(state
)) {
6136 data
->rpc_status
= -EBADF
;
6137 task
->tk_action
= NULL
;
6138 goto out_release_open_seqid
;
6140 data
->timestamp
= jiffies
;
6141 if (nfs4_setup_sequence(data
->server
,
6142 &data
->arg
.seq_args
,
6146 out_release_open_seqid
:
6147 nfs_release_seqid(data
->arg
.open_seqid
);
6148 out_release_lock_seqid
:
6149 nfs_release_seqid(data
->arg
.lock_seqid
);
6151 nfs4_sequence_done(task
, &data
->res
.seq_res
);
6152 dprintk("%s: done!, ret = %d\n", __func__
, data
->rpc_status
);
6155 static void nfs4_lock_done(struct rpc_task
*task
, void *calldata
)
6157 struct nfs4_lockdata
*data
= calldata
;
6158 struct nfs4_lock_state
*lsp
= data
->lsp
;
6160 dprintk("%s: begin!\n", __func__
);
6162 if (!nfs4_sequence_done(task
, &data
->res
.seq_res
))
6165 data
->rpc_status
= task
->tk_status
;
6166 switch (task
->tk_status
) {
6168 renew_lease(NFS_SERVER(d_inode(data
->ctx
->dentry
)),
6170 if (data
->arg
.new_lock
) {
6171 data
->fl
.fl_flags
&= ~(FL_SLEEP
| FL_ACCESS
);
6172 if (locks_lock_inode_wait(lsp
->ls_state
->inode
, &data
->fl
) < 0) {
6173 rpc_restart_call_prepare(task
);
6177 if (data
->arg
.new_lock_owner
!= 0) {
6178 nfs_confirm_seqid(&lsp
->ls_seqid
, 0);
6179 nfs4_stateid_copy(&lsp
->ls_stateid
, &data
->res
.stateid
);
6180 set_bit(NFS_LOCK_INITIALIZED
, &lsp
->ls_flags
);
6181 } else if (!nfs4_update_lock_stateid(lsp
, &data
->res
.stateid
))
6182 rpc_restart_call_prepare(task
);
6184 case -NFS4ERR_BAD_STATEID
:
6185 case -NFS4ERR_OLD_STATEID
:
6186 case -NFS4ERR_STALE_STATEID
:
6187 case -NFS4ERR_EXPIRED
:
6188 if (data
->arg
.new_lock_owner
!= 0) {
6189 if (!nfs4_stateid_match(&data
->arg
.open_stateid
,
6190 &lsp
->ls_state
->open_stateid
))
6191 rpc_restart_call_prepare(task
);
6192 } else if (!nfs4_stateid_match(&data
->arg
.lock_stateid
,
6194 rpc_restart_call_prepare(task
);
6196 dprintk("%s: done, ret = %d!\n", __func__
, data
->rpc_status
);
6199 static void nfs4_lock_release(void *calldata
)
6201 struct nfs4_lockdata
*data
= calldata
;
6203 dprintk("%s: begin!\n", __func__
);
6204 nfs_free_seqid(data
->arg
.open_seqid
);
6205 if (data
->cancelled
!= 0) {
6206 struct rpc_task
*task
;
6207 task
= nfs4_do_unlck(&data
->fl
, data
->ctx
, data
->lsp
,
6208 data
->arg
.lock_seqid
);
6210 rpc_put_task_async(task
);
6211 dprintk("%s: cancelling lock!\n", __func__
);
6213 nfs_free_seqid(data
->arg
.lock_seqid
);
6214 nfs4_put_lock_state(data
->lsp
);
6215 put_nfs_open_context(data
->ctx
);
6216 fput(data
->fl
.fl_file
);
6218 dprintk("%s: done!\n", __func__
);
6221 static const struct rpc_call_ops nfs4_lock_ops
= {
6222 .rpc_call_prepare
= nfs4_lock_prepare
,
6223 .rpc_call_done
= nfs4_lock_done
,
6224 .rpc_release
= nfs4_lock_release
,
6227 static void nfs4_handle_setlk_error(struct nfs_server
*server
, struct nfs4_lock_state
*lsp
, int new_lock_owner
, int error
)
6230 case -NFS4ERR_ADMIN_REVOKED
:
6231 case -NFS4ERR_EXPIRED
:
6232 case -NFS4ERR_BAD_STATEID
:
6233 lsp
->ls_seqid
.flags
&= ~NFS_SEQID_CONFIRMED
;
6234 if (new_lock_owner
!= 0 ||
6235 test_bit(NFS_LOCK_INITIALIZED
, &lsp
->ls_flags
) != 0)
6236 nfs4_schedule_stateid_recovery(server
, lsp
->ls_state
);
6238 case -NFS4ERR_STALE_STATEID
:
6239 lsp
->ls_seqid
.flags
&= ~NFS_SEQID_CONFIRMED
;
6240 nfs4_schedule_lease_recovery(server
->nfs_client
);
6244 static int _nfs4_do_setlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*fl
, int recovery_type
)
6246 struct nfs4_lockdata
*data
;
6247 struct rpc_task
*task
;
6248 struct rpc_message msg
= {
6249 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOCK
],
6250 .rpc_cred
= state
->owner
->so_cred
,
6252 struct rpc_task_setup task_setup_data
= {
6253 .rpc_client
= NFS_CLIENT(state
->inode
),
6254 .rpc_message
= &msg
,
6255 .callback_ops
= &nfs4_lock_ops
,
6256 .workqueue
= nfsiod_workqueue
,
6257 .flags
= RPC_TASK_ASYNC
,
6261 dprintk("%s: begin!\n", __func__
);
6262 data
= nfs4_alloc_lockdata(fl
, nfs_file_open_context(fl
->fl_file
),
6263 fl
->fl_u
.nfs4_fl
.owner
,
6264 recovery_type
== NFS_LOCK_NEW
? GFP_KERNEL
: GFP_NOFS
);
6268 data
->arg
.block
= 1;
6269 nfs4_init_sequence(&data
->arg
.seq_args
, &data
->res
.seq_res
, 1);
6270 msg
.rpc_argp
= &data
->arg
;
6271 msg
.rpc_resp
= &data
->res
;
6272 task_setup_data
.callback_data
= data
;
6273 if (recovery_type
> NFS_LOCK_NEW
) {
6274 if (recovery_type
== NFS_LOCK_RECLAIM
)
6275 data
->arg
.reclaim
= NFS_LOCK_RECLAIM
;
6276 nfs4_set_sequence_privileged(&data
->arg
.seq_args
);
6278 data
->arg
.new_lock
= 1;
6279 task
= rpc_run_task(&task_setup_data
);
6281 return PTR_ERR(task
);
6282 ret
= nfs4_wait_for_completion_rpc_task(task
);
6284 ret
= data
->rpc_status
;
6286 nfs4_handle_setlk_error(data
->server
, data
->lsp
,
6287 data
->arg
.new_lock_owner
, ret
);
6289 data
->cancelled
= 1;
6291 dprintk("%s: done, ret = %d!\n", __func__
, ret
);
6292 trace_nfs4_set_lock(fl
, state
, &data
->res
.stateid
, cmd
, ret
);
6296 static int nfs4_lock_reclaim(struct nfs4_state
*state
, struct file_lock
*request
)
6298 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
6299 struct nfs4_exception exception
= {
6300 .inode
= state
->inode
,
6305 /* Cache the lock if possible... */
6306 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) != 0)
6308 err
= _nfs4_do_setlk(state
, F_SETLK
, request
, NFS_LOCK_RECLAIM
);
6309 if (err
!= -NFS4ERR_DELAY
)
6311 nfs4_handle_exception(server
, err
, &exception
);
6312 } while (exception
.retry
);
6316 static int nfs4_lock_expired(struct nfs4_state
*state
, struct file_lock
*request
)
6318 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
6319 struct nfs4_exception exception
= {
6320 .inode
= state
->inode
,
6324 err
= nfs4_set_lock_state(state
, request
);
6327 if (!recover_lost_locks
) {
6328 set_bit(NFS_LOCK_LOST
, &request
->fl_u
.nfs4_fl
.owner
->ls_flags
);
6332 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) != 0)
6334 err
= _nfs4_do_setlk(state
, F_SETLK
, request
, NFS_LOCK_EXPIRED
);
6338 case -NFS4ERR_GRACE
:
6339 case -NFS4ERR_DELAY
:
6340 nfs4_handle_exception(server
, err
, &exception
);
6343 } while (exception
.retry
);
6348 #if defined(CONFIG_NFS_V4_1)
6349 static int nfs41_lock_expired(struct nfs4_state
*state
, struct file_lock
*request
)
6351 struct nfs4_lock_state
*lsp
;
6354 status
= nfs4_set_lock_state(state
, request
);
6357 lsp
= request
->fl_u
.nfs4_fl
.owner
;
6358 if (test_bit(NFS_LOCK_INITIALIZED
, &lsp
->ls_flags
) ||
6359 test_bit(NFS_LOCK_LOST
, &lsp
->ls_flags
))
6361 status
= nfs4_lock_expired(state
, request
);
6366 static int _nfs4_proc_setlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
6368 struct nfs_inode
*nfsi
= NFS_I(state
->inode
);
6369 struct nfs4_state_owner
*sp
= state
->owner
;
6370 unsigned char fl_flags
= request
->fl_flags
;
6373 request
->fl_flags
|= FL_ACCESS
;
6374 status
= locks_lock_inode_wait(state
->inode
, request
);
6377 mutex_lock(&sp
->so_delegreturn_mutex
);
6378 down_read(&nfsi
->rwsem
);
6379 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
)) {
6380 /* Yes: cache locks! */
6381 /* ...but avoid races with delegation recall... */
6382 request
->fl_flags
= fl_flags
& ~FL_SLEEP
;
6383 status
= locks_lock_inode_wait(state
->inode
, request
);
6384 up_read(&nfsi
->rwsem
);
6385 mutex_unlock(&sp
->so_delegreturn_mutex
);
6388 up_read(&nfsi
->rwsem
);
6389 mutex_unlock(&sp
->so_delegreturn_mutex
);
6390 status
= _nfs4_do_setlk(state
, cmd
, request
, NFS_LOCK_NEW
);
6392 request
->fl_flags
= fl_flags
;
6396 static int nfs4_proc_setlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
6398 struct nfs4_exception exception
= {
6400 .inode
= state
->inode
,
6405 err
= _nfs4_proc_setlk(state
, cmd
, request
);
6406 if (err
== -NFS4ERR_DENIED
)
6408 err
= nfs4_handle_exception(NFS_SERVER(state
->inode
),
6410 } while (exception
.retry
);
6414 #define NFS4_LOCK_MINTIMEOUT (1 * HZ)
6415 #define NFS4_LOCK_MAXTIMEOUT (30 * HZ)
6418 nfs4_retry_setlk_simple(struct nfs4_state
*state
, int cmd
,
6419 struct file_lock
*request
)
6421 int status
= -ERESTARTSYS
;
6422 unsigned long timeout
= NFS4_LOCK_MINTIMEOUT
;
6424 while(!signalled()) {
6425 status
= nfs4_proc_setlk(state
, cmd
, request
);
6426 if ((status
!= -EAGAIN
) || IS_SETLK(cmd
))
6428 freezable_schedule_timeout_interruptible(timeout
);
6430 timeout
= min_t(unsigned long, NFS4_LOCK_MAXTIMEOUT
, timeout
);
6431 status
= -ERESTARTSYS
;
6436 #ifdef CONFIG_NFS_V4_1
6437 struct nfs4_lock_waiter
{
6438 struct task_struct
*task
;
6439 struct inode
*inode
;
6440 struct nfs_lowner
*owner
;
6445 nfs4_wake_lock_waiter(wait_queue_t
*wait
, unsigned int mode
, int flags
, void *key
)
6448 struct cb_notify_lock_args
*cbnl
= key
;
6449 struct nfs4_lock_waiter
*waiter
= wait
->private;
6450 struct nfs_lowner
*lowner
= &cbnl
->cbnl_owner
,
6451 *wowner
= waiter
->owner
;
6453 /* Only wake if the callback was for the same owner */
6454 if (lowner
->clientid
!= wowner
->clientid
||
6455 lowner
->id
!= wowner
->id
||
6456 lowner
->s_dev
!= wowner
->s_dev
)
6459 /* Make sure it's for the right inode */
6460 if (nfs_compare_fh(NFS_FH(waiter
->inode
), &cbnl
->cbnl_fh
))
6463 waiter
->notified
= true;
6465 /* override "private" so we can use default_wake_function */
6466 wait
->private = waiter
->task
;
6467 ret
= autoremove_wake_function(wait
, mode
, flags
, key
);
6468 wait
->private = waiter
;
6473 nfs4_retry_setlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
6475 int status
= -ERESTARTSYS
;
6476 unsigned long flags
;
6477 struct nfs4_lock_state
*lsp
= request
->fl_u
.nfs4_fl
.owner
;
6478 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
6479 struct nfs_client
*clp
= server
->nfs_client
;
6480 wait_queue_head_t
*q
= &clp
->cl_lock_waitq
;
6481 struct nfs_lowner owner
= { .clientid
= clp
->cl_clientid
,
6482 .id
= lsp
->ls_seqid
.owner_id
,
6483 .s_dev
= server
->s_dev
};
6484 struct nfs4_lock_waiter waiter
= { .task
= current
,
6485 .inode
= state
->inode
,
6487 .notified
= false };
6490 /* Don't bother with waitqueue if we don't expect a callback */
6491 if (!test_bit(NFS_STATE_MAY_NOTIFY_LOCK
, &state
->flags
))
6492 return nfs4_retry_setlk_simple(state
, cmd
, request
);
6495 wait
.private = &waiter
;
6496 wait
.func
= nfs4_wake_lock_waiter
;
6497 add_wait_queue(q
, &wait
);
6499 while(!signalled()) {
6500 status
= nfs4_proc_setlk(state
, cmd
, request
);
6501 if ((status
!= -EAGAIN
) || IS_SETLK(cmd
))
6504 status
= -ERESTARTSYS
;
6505 spin_lock_irqsave(&q
->lock
, flags
);
6506 if (waiter
.notified
) {
6507 spin_unlock_irqrestore(&q
->lock
, flags
);
6510 set_current_state(TASK_INTERRUPTIBLE
);
6511 spin_unlock_irqrestore(&q
->lock
, flags
);
6513 freezable_schedule_timeout_interruptible(NFS4_LOCK_MAXTIMEOUT
);
6516 finish_wait(q
, &wait
);
6519 #else /* !CONFIG_NFS_V4_1 */
6521 nfs4_retry_setlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
6523 return nfs4_retry_setlk_simple(state
, cmd
, request
);
6528 nfs4_proc_lock(struct file
*filp
, int cmd
, struct file_lock
*request
)
6530 struct nfs_open_context
*ctx
;
6531 struct nfs4_state
*state
;
6534 /* verify open state */
6535 ctx
= nfs_file_open_context(filp
);
6538 if (request
->fl_start
< 0 || request
->fl_end
< 0)
6541 if (IS_GETLK(cmd
)) {
6543 return nfs4_proc_getlk(state
, F_GETLK
, request
);
6547 if (!(IS_SETLK(cmd
) || IS_SETLKW(cmd
)))
6550 if (request
->fl_type
== F_UNLCK
) {
6552 return nfs4_proc_unlck(state
, cmd
, request
);
6559 if ((request
->fl_flags
& FL_POSIX
) &&
6560 !test_bit(NFS_STATE_POSIX_LOCKS
, &state
->flags
))
6564 * Don't rely on the VFS having checked the file open mode,
6565 * since it won't do this for flock() locks.
6567 switch (request
->fl_type
) {
6569 if (!(filp
->f_mode
& FMODE_READ
))
6573 if (!(filp
->f_mode
& FMODE_WRITE
))
6577 status
= nfs4_set_lock_state(state
, request
);
6581 return nfs4_retry_setlk(state
, cmd
, request
);
6584 int nfs4_lock_delegation_recall(struct file_lock
*fl
, struct nfs4_state
*state
, const nfs4_stateid
*stateid
)
6586 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
6589 err
= nfs4_set_lock_state(state
, fl
);
6592 err
= _nfs4_do_setlk(state
, F_SETLK
, fl
, NFS_LOCK_NEW
);
6593 return nfs4_handle_delegation_recall_error(server
, state
, stateid
, err
);
6596 struct nfs_release_lockowner_data
{
6597 struct nfs4_lock_state
*lsp
;
6598 struct nfs_server
*server
;
6599 struct nfs_release_lockowner_args args
;
6600 struct nfs_release_lockowner_res res
;
6601 unsigned long timestamp
;
6604 static void nfs4_release_lockowner_prepare(struct rpc_task
*task
, void *calldata
)
6606 struct nfs_release_lockowner_data
*data
= calldata
;
6607 struct nfs_server
*server
= data
->server
;
6608 nfs40_setup_sequence(server
->nfs_client
->cl_slot_tbl
,
6609 &data
->args
.seq_args
, &data
->res
.seq_res
, task
);
6610 data
->args
.lock_owner
.clientid
= server
->nfs_client
->cl_clientid
;
6611 data
->timestamp
= jiffies
;
6614 static void nfs4_release_lockowner_done(struct rpc_task
*task
, void *calldata
)
6616 struct nfs_release_lockowner_data
*data
= calldata
;
6617 struct nfs_server
*server
= data
->server
;
6619 nfs40_sequence_done(task
, &data
->res
.seq_res
);
6621 switch (task
->tk_status
) {
6623 renew_lease(server
, data
->timestamp
);
6625 case -NFS4ERR_STALE_CLIENTID
:
6626 case -NFS4ERR_EXPIRED
:
6627 nfs4_schedule_lease_recovery(server
->nfs_client
);
6629 case -NFS4ERR_LEASE_MOVED
:
6630 case -NFS4ERR_DELAY
:
6631 if (nfs4_async_handle_error(task
, server
,
6632 NULL
, NULL
) == -EAGAIN
)
6633 rpc_restart_call_prepare(task
);
6637 static void nfs4_release_lockowner_release(void *calldata
)
6639 struct nfs_release_lockowner_data
*data
= calldata
;
6640 nfs4_free_lock_state(data
->server
, data
->lsp
);
6644 static const struct rpc_call_ops nfs4_release_lockowner_ops
= {
6645 .rpc_call_prepare
= nfs4_release_lockowner_prepare
,
6646 .rpc_call_done
= nfs4_release_lockowner_done
,
6647 .rpc_release
= nfs4_release_lockowner_release
,
6651 nfs4_release_lockowner(struct nfs_server
*server
, struct nfs4_lock_state
*lsp
)
6653 struct nfs_release_lockowner_data
*data
;
6654 struct rpc_message msg
= {
6655 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RELEASE_LOCKOWNER
],
6658 if (server
->nfs_client
->cl_mvops
->minor_version
!= 0)
6661 data
= kmalloc(sizeof(*data
), GFP_NOFS
);
6665 data
->server
= server
;
6666 data
->args
.lock_owner
.clientid
= server
->nfs_client
->cl_clientid
;
6667 data
->args
.lock_owner
.id
= lsp
->ls_seqid
.owner_id
;
6668 data
->args
.lock_owner
.s_dev
= server
->s_dev
;
6670 msg
.rpc_argp
= &data
->args
;
6671 msg
.rpc_resp
= &data
->res
;
6672 nfs4_init_sequence(&data
->args
.seq_args
, &data
->res
.seq_res
, 0);
6673 rpc_call_async(server
->client
, &msg
, 0, &nfs4_release_lockowner_ops
, data
);
6676 #define XATTR_NAME_NFSV4_ACL "system.nfs4_acl"
6678 static int nfs4_xattr_set_nfs4_acl(const struct xattr_handler
*handler
,
6679 struct dentry
*unused
, struct inode
*inode
,
6680 const char *key
, const void *buf
,
6681 size_t buflen
, int flags
)
6683 return nfs4_proc_set_acl(inode
, buf
, buflen
);
6686 static int nfs4_xattr_get_nfs4_acl(const struct xattr_handler
*handler
,
6687 struct dentry
*unused
, struct inode
*inode
,
6688 const char *key
, void *buf
, size_t buflen
)
6690 return nfs4_proc_get_acl(inode
, buf
, buflen
);
6693 static bool nfs4_xattr_list_nfs4_acl(struct dentry
*dentry
)
6695 return nfs4_server_supports_acls(NFS_SERVER(d_inode(dentry
)));
6698 #ifdef CONFIG_NFS_V4_SECURITY_LABEL
6700 static int nfs4_xattr_set_nfs4_label(const struct xattr_handler
*handler
,
6701 struct dentry
*unused
, struct inode
*inode
,
6702 const char *key
, const void *buf
,
6703 size_t buflen
, int flags
)
6705 if (security_ismaclabel(key
))
6706 return nfs4_set_security_label(inode
, buf
, buflen
);
6711 static int nfs4_xattr_get_nfs4_label(const struct xattr_handler
*handler
,
6712 struct dentry
*unused
, struct inode
*inode
,
6713 const char *key
, void *buf
, size_t buflen
)
6715 if (security_ismaclabel(key
))
6716 return nfs4_get_security_label(inode
, buf
, buflen
);
6721 nfs4_listxattr_nfs4_label(struct inode
*inode
, char *list
, size_t list_len
)
6725 if (nfs_server_capable(inode
, NFS_CAP_SECURITY_LABEL
)) {
6726 len
= security_inode_listsecurity(inode
, list
, list_len
);
6727 if (list_len
&& len
> list_len
)
6733 static const struct xattr_handler nfs4_xattr_nfs4_label_handler
= {
6734 .prefix
= XATTR_SECURITY_PREFIX
,
6735 .get
= nfs4_xattr_get_nfs4_label
,
6736 .set
= nfs4_xattr_set_nfs4_label
,
6742 nfs4_listxattr_nfs4_label(struct inode
*inode
, char *list
, size_t list_len
)
6750 * nfs_fhget will use either the mounted_on_fileid or the fileid
6752 static void nfs_fixup_referral_attributes(struct nfs_fattr
*fattr
)
6754 if (!(((fattr
->valid
& NFS_ATTR_FATTR_MOUNTED_ON_FILEID
) ||
6755 (fattr
->valid
& NFS_ATTR_FATTR_FILEID
)) &&
6756 (fattr
->valid
& NFS_ATTR_FATTR_FSID
) &&
6757 (fattr
->valid
& NFS_ATTR_FATTR_V4_LOCATIONS
)))
6760 fattr
->valid
|= NFS_ATTR_FATTR_TYPE
| NFS_ATTR_FATTR_MODE
|
6761 NFS_ATTR_FATTR_NLINK
| NFS_ATTR_FATTR_V4_REFERRAL
;
6762 fattr
->mode
= S_IFDIR
| S_IRUGO
| S_IXUGO
;
6766 static int _nfs4_proc_fs_locations(struct rpc_clnt
*client
, struct inode
*dir
,
6767 const struct qstr
*name
,
6768 struct nfs4_fs_locations
*fs_locations
,
6771 struct nfs_server
*server
= NFS_SERVER(dir
);
6773 [0] = FATTR4_WORD0_FSID
| FATTR4_WORD0_FS_LOCATIONS
,
6775 struct nfs4_fs_locations_arg args
= {
6776 .dir_fh
= NFS_FH(dir
),
6781 struct nfs4_fs_locations_res res
= {
6782 .fs_locations
= fs_locations
,
6784 struct rpc_message msg
= {
6785 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_FS_LOCATIONS
],
6791 dprintk("%s: start\n", __func__
);
6793 /* Ask for the fileid of the absent filesystem if mounted_on_fileid
6794 * is not supported */
6795 if (NFS_SERVER(dir
)->attr_bitmask
[1] & FATTR4_WORD1_MOUNTED_ON_FILEID
)
6796 bitmask
[1] |= FATTR4_WORD1_MOUNTED_ON_FILEID
;
6798 bitmask
[0] |= FATTR4_WORD0_FILEID
;
6800 nfs_fattr_init(&fs_locations
->fattr
);
6801 fs_locations
->server
= server
;
6802 fs_locations
->nlocations
= 0;
6803 status
= nfs4_call_sync(client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
6804 dprintk("%s: returned status = %d\n", __func__
, status
);
6808 int nfs4_proc_fs_locations(struct rpc_clnt
*client
, struct inode
*dir
,
6809 const struct qstr
*name
,
6810 struct nfs4_fs_locations
*fs_locations
,
6813 struct nfs4_exception exception
= { };
6816 err
= _nfs4_proc_fs_locations(client
, dir
, name
,
6817 fs_locations
, page
);
6818 trace_nfs4_get_fs_locations(dir
, name
, err
);
6819 err
= nfs4_handle_exception(NFS_SERVER(dir
), err
,
6821 } while (exception
.retry
);
6826 * This operation also signals the server that this client is
6827 * performing migration recovery. The server can stop returning
6828 * NFS4ERR_LEASE_MOVED to this client. A RENEW operation is
6829 * appended to this compound to identify the client ID which is
6830 * performing recovery.
6832 static int _nfs40_proc_get_locations(struct inode
*inode
,
6833 struct nfs4_fs_locations
*locations
,
6834 struct page
*page
, struct rpc_cred
*cred
)
6836 struct nfs_server
*server
= NFS_SERVER(inode
);
6837 struct rpc_clnt
*clnt
= server
->client
;
6839 [0] = FATTR4_WORD0_FSID
| FATTR4_WORD0_FS_LOCATIONS
,
6841 struct nfs4_fs_locations_arg args
= {
6842 .clientid
= server
->nfs_client
->cl_clientid
,
6843 .fh
= NFS_FH(inode
),
6846 .migration
= 1, /* skip LOOKUP */
6847 .renew
= 1, /* append RENEW */
6849 struct nfs4_fs_locations_res res
= {
6850 .fs_locations
= locations
,
6854 struct rpc_message msg
= {
6855 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_FS_LOCATIONS
],
6860 unsigned long now
= jiffies
;
6863 nfs_fattr_init(&locations
->fattr
);
6864 locations
->server
= server
;
6865 locations
->nlocations
= 0;
6867 nfs4_init_sequence(&args
.seq_args
, &res
.seq_res
, 0);
6868 nfs4_set_sequence_privileged(&args
.seq_args
);
6869 status
= nfs4_call_sync_sequence(clnt
, server
, &msg
,
6870 &args
.seq_args
, &res
.seq_res
);
6874 renew_lease(server
, now
);
6878 #ifdef CONFIG_NFS_V4_1
6881 * This operation also signals the server that this client is
6882 * performing migration recovery. The server can stop asserting
6883 * SEQ4_STATUS_LEASE_MOVED for this client. The client ID
6884 * performing this operation is identified in the SEQUENCE
6885 * operation in this compound.
6887 * When the client supports GETATTR(fs_locations_info), it can
6888 * be plumbed in here.
6890 static int _nfs41_proc_get_locations(struct inode
*inode
,
6891 struct nfs4_fs_locations
*locations
,
6892 struct page
*page
, struct rpc_cred
*cred
)
6894 struct nfs_server
*server
= NFS_SERVER(inode
);
6895 struct rpc_clnt
*clnt
= server
->client
;
6897 [0] = FATTR4_WORD0_FSID
| FATTR4_WORD0_FS_LOCATIONS
,
6899 struct nfs4_fs_locations_arg args
= {
6900 .fh
= NFS_FH(inode
),
6903 .migration
= 1, /* skip LOOKUP */
6905 struct nfs4_fs_locations_res res
= {
6906 .fs_locations
= locations
,
6909 struct rpc_message msg
= {
6910 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_FS_LOCATIONS
],
6917 nfs_fattr_init(&locations
->fattr
);
6918 locations
->server
= server
;
6919 locations
->nlocations
= 0;
6921 nfs4_init_sequence(&args
.seq_args
, &res
.seq_res
, 0);
6922 nfs4_set_sequence_privileged(&args
.seq_args
);
6923 status
= nfs4_call_sync_sequence(clnt
, server
, &msg
,
6924 &args
.seq_args
, &res
.seq_res
);
6925 if (status
== NFS4_OK
&&
6926 res
.seq_res
.sr_status_flags
& SEQ4_STATUS_LEASE_MOVED
)
6927 status
= -NFS4ERR_LEASE_MOVED
;
6931 #endif /* CONFIG_NFS_V4_1 */
6934 * nfs4_proc_get_locations - discover locations for a migrated FSID
6935 * @inode: inode on FSID that is migrating
6936 * @locations: result of query
6938 * @cred: credential to use for this operation
6940 * Returns NFS4_OK on success, a negative NFS4ERR status code if the
6941 * operation failed, or a negative errno if a local error occurred.
6943 * On success, "locations" is filled in, but if the server has
6944 * no locations information, NFS_ATTR_FATTR_V4_LOCATIONS is not
6947 * -NFS4ERR_LEASE_MOVED is returned if the server still has leases
6948 * from this client that require migration recovery.
6950 int nfs4_proc_get_locations(struct inode
*inode
,
6951 struct nfs4_fs_locations
*locations
,
6952 struct page
*page
, struct rpc_cred
*cred
)
6954 struct nfs_server
*server
= NFS_SERVER(inode
);
6955 struct nfs_client
*clp
= server
->nfs_client
;
6956 const struct nfs4_mig_recovery_ops
*ops
=
6957 clp
->cl_mvops
->mig_recovery_ops
;
6958 struct nfs4_exception exception
= { };
6961 dprintk("%s: FSID %llx:%llx on \"%s\"\n", __func__
,
6962 (unsigned long long)server
->fsid
.major
,
6963 (unsigned long long)server
->fsid
.minor
,
6965 nfs_display_fhandle(NFS_FH(inode
), __func__
);
6968 status
= ops
->get_locations(inode
, locations
, page
, cred
);
6969 if (status
!= -NFS4ERR_DELAY
)
6971 nfs4_handle_exception(server
, status
, &exception
);
6972 } while (exception
.retry
);
6977 * This operation also signals the server that this client is
6978 * performing "lease moved" recovery. The server can stop
6979 * returning NFS4ERR_LEASE_MOVED to this client. A RENEW operation
6980 * is appended to this compound to identify the client ID which is
6981 * performing recovery.
6983 static int _nfs40_proc_fsid_present(struct inode
*inode
, struct rpc_cred
*cred
)
6985 struct nfs_server
*server
= NFS_SERVER(inode
);
6986 struct nfs_client
*clp
= NFS_SERVER(inode
)->nfs_client
;
6987 struct rpc_clnt
*clnt
= server
->client
;
6988 struct nfs4_fsid_present_arg args
= {
6989 .fh
= NFS_FH(inode
),
6990 .clientid
= clp
->cl_clientid
,
6991 .renew
= 1, /* append RENEW */
6993 struct nfs4_fsid_present_res res
= {
6996 struct rpc_message msg
= {
6997 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_FSID_PRESENT
],
7002 unsigned long now
= jiffies
;
7005 res
.fh
= nfs_alloc_fhandle();
7009 nfs4_init_sequence(&args
.seq_args
, &res
.seq_res
, 0);
7010 nfs4_set_sequence_privileged(&args
.seq_args
);
7011 status
= nfs4_call_sync_sequence(clnt
, server
, &msg
,
7012 &args
.seq_args
, &res
.seq_res
);
7013 nfs_free_fhandle(res
.fh
);
7017 do_renew_lease(clp
, now
);
7021 #ifdef CONFIG_NFS_V4_1
7024 * This operation also signals the server that this client is
7025 * performing "lease moved" recovery. The server can stop asserting
7026 * SEQ4_STATUS_LEASE_MOVED for this client. The client ID performing
7027 * this operation is identified in the SEQUENCE operation in this
7030 static int _nfs41_proc_fsid_present(struct inode
*inode
, struct rpc_cred
*cred
)
7032 struct nfs_server
*server
= NFS_SERVER(inode
);
7033 struct rpc_clnt
*clnt
= server
->client
;
7034 struct nfs4_fsid_present_arg args
= {
7035 .fh
= NFS_FH(inode
),
7037 struct nfs4_fsid_present_res res
= {
7039 struct rpc_message msg
= {
7040 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_FSID_PRESENT
],
7047 res
.fh
= nfs_alloc_fhandle();
7051 nfs4_init_sequence(&args
.seq_args
, &res
.seq_res
, 0);
7052 nfs4_set_sequence_privileged(&args
.seq_args
);
7053 status
= nfs4_call_sync_sequence(clnt
, server
, &msg
,
7054 &args
.seq_args
, &res
.seq_res
);
7055 nfs_free_fhandle(res
.fh
);
7056 if (status
== NFS4_OK
&&
7057 res
.seq_res
.sr_status_flags
& SEQ4_STATUS_LEASE_MOVED
)
7058 status
= -NFS4ERR_LEASE_MOVED
;
7062 #endif /* CONFIG_NFS_V4_1 */
7065 * nfs4_proc_fsid_present - Is this FSID present or absent on server?
7066 * @inode: inode on FSID to check
7067 * @cred: credential to use for this operation
7069 * Server indicates whether the FSID is present, moved, or not
7070 * recognized. This operation is necessary to clear a LEASE_MOVED
7071 * condition for this client ID.
7073 * Returns NFS4_OK if the FSID is present on this server,
7074 * -NFS4ERR_MOVED if the FSID is no longer present, a negative
7075 * NFS4ERR code if some error occurred on the server, or a
7076 * negative errno if a local failure occurred.
7078 int nfs4_proc_fsid_present(struct inode
*inode
, struct rpc_cred
*cred
)
7080 struct nfs_server
*server
= NFS_SERVER(inode
);
7081 struct nfs_client
*clp
= server
->nfs_client
;
7082 const struct nfs4_mig_recovery_ops
*ops
=
7083 clp
->cl_mvops
->mig_recovery_ops
;
7084 struct nfs4_exception exception
= { };
7087 dprintk("%s: FSID %llx:%llx on \"%s\"\n", __func__
,
7088 (unsigned long long)server
->fsid
.major
,
7089 (unsigned long long)server
->fsid
.minor
,
7091 nfs_display_fhandle(NFS_FH(inode
), __func__
);
7094 status
= ops
->fsid_present(inode
, cred
);
7095 if (status
!= -NFS4ERR_DELAY
)
7097 nfs4_handle_exception(server
, status
, &exception
);
7098 } while (exception
.retry
);
7103 * If 'use_integrity' is true and the state managment nfs_client
7104 * cl_rpcclient is using krb5i/p, use the integrity protected cl_rpcclient
7105 * and the machine credential as per RFC3530bis and RFC5661 Security
7106 * Considerations sections. Otherwise, just use the user cred with the
7107 * filesystem's rpc_client.
7109 static int _nfs4_proc_secinfo(struct inode
*dir
, const struct qstr
*name
, struct nfs4_secinfo_flavors
*flavors
, bool use_integrity
)
7112 struct nfs4_secinfo_arg args
= {
7113 .dir_fh
= NFS_FH(dir
),
7116 struct nfs4_secinfo_res res
= {
7119 struct rpc_message msg
= {
7120 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SECINFO
],
7124 struct rpc_clnt
*clnt
= NFS_SERVER(dir
)->client
;
7125 struct rpc_cred
*cred
= NULL
;
7127 if (use_integrity
) {
7128 clnt
= NFS_SERVER(dir
)->nfs_client
->cl_rpcclient
;
7129 cred
= nfs4_get_clid_cred(NFS_SERVER(dir
)->nfs_client
);
7130 msg
.rpc_cred
= cred
;
7133 dprintk("NFS call secinfo %s\n", name
->name
);
7135 nfs4_state_protect(NFS_SERVER(dir
)->nfs_client
,
7136 NFS_SP4_MACH_CRED_SECINFO
, &clnt
, &msg
);
7138 status
= nfs4_call_sync(clnt
, NFS_SERVER(dir
), &msg
, &args
.seq_args
,
7140 dprintk("NFS reply secinfo: %d\n", status
);
7148 int nfs4_proc_secinfo(struct inode
*dir
, const struct qstr
*name
,
7149 struct nfs4_secinfo_flavors
*flavors
)
7151 struct nfs4_exception exception
= { };
7154 err
= -NFS4ERR_WRONGSEC
;
7156 /* try to use integrity protection with machine cred */
7157 if (_nfs4_is_integrity_protected(NFS_SERVER(dir
)->nfs_client
))
7158 err
= _nfs4_proc_secinfo(dir
, name
, flavors
, true);
7161 * if unable to use integrity protection, or SECINFO with
7162 * integrity protection returns NFS4ERR_WRONGSEC (which is
7163 * disallowed by spec, but exists in deployed servers) use
7164 * the current filesystem's rpc_client and the user cred.
7166 if (err
== -NFS4ERR_WRONGSEC
)
7167 err
= _nfs4_proc_secinfo(dir
, name
, flavors
, false);
7169 trace_nfs4_secinfo(dir
, name
, err
);
7170 err
= nfs4_handle_exception(NFS_SERVER(dir
), err
,
7172 } while (exception
.retry
);
7176 #ifdef CONFIG_NFS_V4_1
7178 * Check the exchange flags returned by the server for invalid flags, having
7179 * both PNFS and NON_PNFS flags set, and not having one of NON_PNFS, PNFS, or
7182 static int nfs4_check_cl_exchange_flags(u32 flags
)
7184 if (flags
& ~EXCHGID4_FLAG_MASK_R
)
7186 if ((flags
& EXCHGID4_FLAG_USE_PNFS_MDS
) &&
7187 (flags
& EXCHGID4_FLAG_USE_NON_PNFS
))
7189 if (!(flags
& (EXCHGID4_FLAG_MASK_PNFS
)))
7193 return -NFS4ERR_INVAL
;
7197 nfs41_same_server_scope(struct nfs41_server_scope
*a
,
7198 struct nfs41_server_scope
*b
)
7200 if (a
->server_scope_sz
== b
->server_scope_sz
&&
7201 memcmp(a
->server_scope
, b
->server_scope
, a
->server_scope_sz
) == 0)
7208 nfs4_bind_one_conn_to_session_done(struct rpc_task
*task
, void *calldata
)
7212 static const struct rpc_call_ops nfs4_bind_one_conn_to_session_ops
= {
7213 .rpc_call_done
= &nfs4_bind_one_conn_to_session_done
,
7217 * nfs4_proc_bind_one_conn_to_session()
7219 * The 4.1 client currently uses the same TCP connection for the
7220 * fore and backchannel.
7223 int nfs4_proc_bind_one_conn_to_session(struct rpc_clnt
*clnt
,
7224 struct rpc_xprt
*xprt
,
7225 struct nfs_client
*clp
,
7226 struct rpc_cred
*cred
)
7229 struct nfs41_bind_conn_to_session_args args
= {
7231 .dir
= NFS4_CDFC4_FORE_OR_BOTH
,
7233 struct nfs41_bind_conn_to_session_res res
;
7234 struct rpc_message msg
= {
7236 &nfs4_procedures
[NFSPROC4_CLNT_BIND_CONN_TO_SESSION
],
7241 struct rpc_task_setup task_setup_data
= {
7244 .callback_ops
= &nfs4_bind_one_conn_to_session_ops
,
7245 .rpc_message
= &msg
,
7246 .flags
= RPC_TASK_TIMEOUT
,
7248 struct rpc_task
*task
;
7250 dprintk("--> %s\n", __func__
);
7252 nfs4_copy_sessionid(&args
.sessionid
, &clp
->cl_session
->sess_id
);
7253 if (!(clp
->cl_session
->flags
& SESSION4_BACK_CHAN
))
7254 args
.dir
= NFS4_CDFC4_FORE
;
7256 /* Do not set the backchannel flag unless this is clnt->cl_xprt */
7257 if (xprt
!= rcu_access_pointer(clnt
->cl_xprt
))
7258 args
.dir
= NFS4_CDFC4_FORE
;
7260 task
= rpc_run_task(&task_setup_data
);
7261 if (!IS_ERR(task
)) {
7262 status
= task
->tk_status
;
7265 status
= PTR_ERR(task
);
7266 trace_nfs4_bind_conn_to_session(clp
, status
);
7268 if (memcmp(res
.sessionid
.data
,
7269 clp
->cl_session
->sess_id
.data
, NFS4_MAX_SESSIONID_LEN
)) {
7270 dprintk("NFS: %s: Session ID mismatch\n", __func__
);
7274 if ((res
.dir
& args
.dir
) != res
.dir
|| res
.dir
== 0) {
7275 dprintk("NFS: %s: Unexpected direction from server\n",
7280 if (res
.use_conn_in_rdma_mode
!= args
.use_conn_in_rdma_mode
) {
7281 dprintk("NFS: %s: Server returned RDMA mode = true\n",
7288 dprintk("<-- %s status= %d\n", __func__
, status
);
7292 struct rpc_bind_conn_calldata
{
7293 struct nfs_client
*clp
;
7294 struct rpc_cred
*cred
;
7298 nfs4_proc_bind_conn_to_session_callback(struct rpc_clnt
*clnt
,
7299 struct rpc_xprt
*xprt
,
7302 struct rpc_bind_conn_calldata
*p
= calldata
;
7304 return nfs4_proc_bind_one_conn_to_session(clnt
, xprt
, p
->clp
, p
->cred
);
7307 int nfs4_proc_bind_conn_to_session(struct nfs_client
*clp
, struct rpc_cred
*cred
)
7309 struct rpc_bind_conn_calldata data
= {
7313 return rpc_clnt_iterate_for_each_xprt(clp
->cl_rpcclient
,
7314 nfs4_proc_bind_conn_to_session_callback
, &data
);
7318 * Minimum set of SP4_MACH_CRED operations from RFC 5661 in the enforce map
7319 * and operations we'd like to see to enable certain features in the allow map
7321 static const struct nfs41_state_protection nfs4_sp4_mach_cred_request
= {
7322 .how
= SP4_MACH_CRED
,
7323 .enforce
.u
.words
= {
7324 [1] = 1 << (OP_BIND_CONN_TO_SESSION
- 32) |
7325 1 << (OP_EXCHANGE_ID
- 32) |
7326 1 << (OP_CREATE_SESSION
- 32) |
7327 1 << (OP_DESTROY_SESSION
- 32) |
7328 1 << (OP_DESTROY_CLIENTID
- 32)
7331 [0] = 1 << (OP_CLOSE
) |
7332 1 << (OP_OPEN_DOWNGRADE
) |
7334 1 << (OP_DELEGRETURN
) |
7336 [1] = 1 << (OP_SECINFO
- 32) |
7337 1 << (OP_SECINFO_NO_NAME
- 32) |
7338 1 << (OP_LAYOUTRETURN
- 32) |
7339 1 << (OP_TEST_STATEID
- 32) |
7340 1 << (OP_FREE_STATEID
- 32) |
7341 1 << (OP_WRITE
- 32)
7346 * Select the state protection mode for client `clp' given the server results
7347 * from exchange_id in `sp'.
7349 * Returns 0 on success, negative errno otherwise.
7351 static int nfs4_sp4_select_mode(struct nfs_client
*clp
,
7352 struct nfs41_state_protection
*sp
)
7354 static const u32 supported_enforce
[NFS4_OP_MAP_NUM_WORDS
] = {
7355 [1] = 1 << (OP_BIND_CONN_TO_SESSION
- 32) |
7356 1 << (OP_EXCHANGE_ID
- 32) |
7357 1 << (OP_CREATE_SESSION
- 32) |
7358 1 << (OP_DESTROY_SESSION
- 32) |
7359 1 << (OP_DESTROY_CLIENTID
- 32)
7363 if (sp
->how
== SP4_MACH_CRED
) {
7364 /* Print state protect result */
7365 dfprintk(MOUNT
, "Server SP4_MACH_CRED support:\n");
7366 for (i
= 0; i
<= LAST_NFS4_OP
; i
++) {
7367 if (test_bit(i
, sp
->enforce
.u
.longs
))
7368 dfprintk(MOUNT
, " enforce op %d\n", i
);
7369 if (test_bit(i
, sp
->allow
.u
.longs
))
7370 dfprintk(MOUNT
, " allow op %d\n", i
);
7373 /* make sure nothing is on enforce list that isn't supported */
7374 for (i
= 0; i
< NFS4_OP_MAP_NUM_WORDS
; i
++) {
7375 if (sp
->enforce
.u
.words
[i
] & ~supported_enforce
[i
]) {
7376 dfprintk(MOUNT
, "sp4_mach_cred: disabled\n");
7382 * Minimal mode - state operations are allowed to use machine
7383 * credential. Note this already happens by default, so the
7384 * client doesn't have to do anything more than the negotiation.
7386 * NOTE: we don't care if EXCHANGE_ID is in the list -
7387 * we're already using the machine cred for exchange_id
7388 * and will never use a different cred.
7390 if (test_bit(OP_BIND_CONN_TO_SESSION
, sp
->enforce
.u
.longs
) &&
7391 test_bit(OP_CREATE_SESSION
, sp
->enforce
.u
.longs
) &&
7392 test_bit(OP_DESTROY_SESSION
, sp
->enforce
.u
.longs
) &&
7393 test_bit(OP_DESTROY_CLIENTID
, sp
->enforce
.u
.longs
)) {
7394 dfprintk(MOUNT
, "sp4_mach_cred:\n");
7395 dfprintk(MOUNT
, " minimal mode enabled\n");
7396 set_bit(NFS_SP4_MACH_CRED_MINIMAL
, &clp
->cl_sp4_flags
);
7398 dfprintk(MOUNT
, "sp4_mach_cred: disabled\n");
7402 if (test_bit(OP_CLOSE
, sp
->allow
.u
.longs
) &&
7403 test_bit(OP_OPEN_DOWNGRADE
, sp
->allow
.u
.longs
) &&
7404 test_bit(OP_DELEGRETURN
, sp
->allow
.u
.longs
) &&
7405 test_bit(OP_LOCKU
, sp
->allow
.u
.longs
)) {
7406 dfprintk(MOUNT
, " cleanup mode enabled\n");
7407 set_bit(NFS_SP4_MACH_CRED_CLEANUP
, &clp
->cl_sp4_flags
);
7410 if (test_bit(OP_LAYOUTRETURN
, sp
->allow
.u
.longs
)) {
7411 dfprintk(MOUNT
, " pnfs cleanup mode enabled\n");
7412 set_bit(NFS_SP4_MACH_CRED_PNFS_CLEANUP
,
7413 &clp
->cl_sp4_flags
);
7416 if (test_bit(OP_SECINFO
, sp
->allow
.u
.longs
) &&
7417 test_bit(OP_SECINFO_NO_NAME
, sp
->allow
.u
.longs
)) {
7418 dfprintk(MOUNT
, " secinfo mode enabled\n");
7419 set_bit(NFS_SP4_MACH_CRED_SECINFO
, &clp
->cl_sp4_flags
);
7422 if (test_bit(OP_TEST_STATEID
, sp
->allow
.u
.longs
) &&
7423 test_bit(OP_FREE_STATEID
, sp
->allow
.u
.longs
)) {
7424 dfprintk(MOUNT
, " stateid mode enabled\n");
7425 set_bit(NFS_SP4_MACH_CRED_STATEID
, &clp
->cl_sp4_flags
);
7428 if (test_bit(OP_WRITE
, sp
->allow
.u
.longs
)) {
7429 dfprintk(MOUNT
, " write mode enabled\n");
7430 set_bit(NFS_SP4_MACH_CRED_WRITE
, &clp
->cl_sp4_flags
);
7433 if (test_bit(OP_COMMIT
, sp
->allow
.u
.longs
)) {
7434 dfprintk(MOUNT
, " commit mode enabled\n");
7435 set_bit(NFS_SP4_MACH_CRED_COMMIT
, &clp
->cl_sp4_flags
);
7442 struct nfs41_exchange_id_data
{
7443 struct nfs41_exchange_id_res res
;
7444 struct nfs41_exchange_id_args args
;
7445 struct rpc_xprt
*xprt
;
7449 static void nfs4_exchange_id_done(struct rpc_task
*task
, void *data
)
7451 struct nfs41_exchange_id_data
*cdata
=
7452 (struct nfs41_exchange_id_data
*)data
;
7453 struct nfs_client
*clp
= cdata
->args
.client
;
7454 int status
= task
->tk_status
;
7456 trace_nfs4_exchange_id(clp
, status
);
7459 status
= nfs4_check_cl_exchange_flags(cdata
->res
.flags
);
7461 if (cdata
->xprt
&& status
== 0) {
7462 status
= nfs4_detect_session_trunking(clp
, &cdata
->res
,
7468 status
= nfs4_sp4_select_mode(clp
, &cdata
->res
.state_protect
);
7471 clp
->cl_clientid
= cdata
->res
.clientid
;
7472 clp
->cl_exchange_flags
= cdata
->res
.flags
;
7473 /* Client ID is not confirmed */
7474 if (!(cdata
->res
.flags
& EXCHGID4_FLAG_CONFIRMED_R
)) {
7475 clear_bit(NFS4_SESSION_ESTABLISHED
,
7476 &clp
->cl_session
->session_state
);
7477 clp
->cl_seqid
= cdata
->res
.seqid
;
7480 kfree(clp
->cl_serverowner
);
7481 clp
->cl_serverowner
= cdata
->res
.server_owner
;
7482 cdata
->res
.server_owner
= NULL
;
7484 /* use the most recent implementation id */
7485 kfree(clp
->cl_implid
);
7486 clp
->cl_implid
= cdata
->res
.impl_id
;
7487 cdata
->res
.impl_id
= NULL
;
7489 if (clp
->cl_serverscope
!= NULL
&&
7490 !nfs41_same_server_scope(clp
->cl_serverscope
,
7491 cdata
->res
.server_scope
)) {
7492 dprintk("%s: server_scope mismatch detected\n",
7494 set_bit(NFS4CLNT_SERVER_SCOPE_MISMATCH
, &clp
->cl_state
);
7495 kfree(clp
->cl_serverscope
);
7496 clp
->cl_serverscope
= NULL
;
7499 if (clp
->cl_serverscope
== NULL
) {
7500 clp
->cl_serverscope
= cdata
->res
.server_scope
;
7501 cdata
->res
.server_scope
= NULL
;
7503 /* Save the EXCHANGE_ID verifier session trunk tests */
7504 memcpy(clp
->cl_confirm
.data
, cdata
->args
.verifier
->data
,
7505 sizeof(clp
->cl_confirm
.data
));
7508 cdata
->rpc_status
= status
;
7512 static void nfs4_exchange_id_release(void *data
)
7514 struct nfs41_exchange_id_data
*cdata
=
7515 (struct nfs41_exchange_id_data
*)data
;
7517 nfs_put_client(cdata
->args
.client
);
7519 xprt_put(cdata
->xprt
);
7520 rpc_clnt_xprt_switch_put(cdata
->args
.client
->cl_rpcclient
);
7522 kfree(cdata
->res
.impl_id
);
7523 kfree(cdata
->res
.server_scope
);
7524 kfree(cdata
->res
.server_owner
);
7528 static const struct rpc_call_ops nfs4_exchange_id_call_ops
= {
7529 .rpc_call_done
= nfs4_exchange_id_done
,
7530 .rpc_release
= nfs4_exchange_id_release
,
7534 * _nfs4_proc_exchange_id()
7536 * Wrapper for EXCHANGE_ID operation.
7538 static int _nfs4_proc_exchange_id(struct nfs_client
*clp
, struct rpc_cred
*cred
,
7539 u32 sp4_how
, struct rpc_xprt
*xprt
)
7541 nfs4_verifier verifier
;
7542 struct rpc_message msg
= {
7543 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_EXCHANGE_ID
],
7546 struct rpc_task_setup task_setup_data
= {
7547 .rpc_client
= clp
->cl_rpcclient
,
7548 .callback_ops
= &nfs4_exchange_id_call_ops
,
7549 .rpc_message
= &msg
,
7550 .flags
= RPC_TASK_ASYNC
| RPC_TASK_TIMEOUT
,
7552 struct nfs41_exchange_id_data
*calldata
;
7553 struct rpc_task
*task
;
7556 if (!atomic_inc_not_zero(&clp
->cl_count
))
7560 calldata
= kzalloc(sizeof(*calldata
), GFP_NOFS
);
7565 nfs4_init_boot_verifier(clp
, &verifier
);
7567 status
= nfs4_init_uniform_client_string(clp
);
7571 dprintk("NFS call exchange_id auth=%s, '%s'\n",
7572 clp
->cl_rpcclient
->cl_auth
->au_ops
->au_name
,
7575 calldata
->res
.server_owner
= kzalloc(sizeof(struct nfs41_server_owner
),
7578 if (unlikely(calldata
->res
.server_owner
== NULL
))
7581 calldata
->res
.server_scope
= kzalloc(sizeof(struct nfs41_server_scope
),
7583 if (unlikely(calldata
->res
.server_scope
== NULL
))
7584 goto out_server_owner
;
7586 calldata
->res
.impl_id
= kzalloc(sizeof(struct nfs41_impl_id
), GFP_NOFS
);
7587 if (unlikely(calldata
->res
.impl_id
== NULL
))
7588 goto out_server_scope
;
7592 calldata
->args
.state_protect
.how
= SP4_NONE
;
7596 calldata
->args
.state_protect
= nfs4_sp4_mach_cred_request
;
7606 calldata
->xprt
= xprt
;
7607 task_setup_data
.rpc_xprt
= xprt
;
7608 task_setup_data
.flags
=
7609 RPC_TASK_SOFT
|RPC_TASK_SOFTCONN
|RPC_TASK_ASYNC
;
7610 calldata
->args
.verifier
= &clp
->cl_confirm
;
7612 calldata
->args
.verifier
= &verifier
;
7614 calldata
->args
.client
= clp
;
7615 #ifdef CONFIG_NFS_V4_1_MIGRATION
7616 calldata
->args
.flags
= EXCHGID4_FLAG_SUPP_MOVED_REFER
|
7617 EXCHGID4_FLAG_BIND_PRINC_STATEID
|
7618 EXCHGID4_FLAG_SUPP_MOVED_MIGR
,
7620 calldata
->args
.flags
= EXCHGID4_FLAG_SUPP_MOVED_REFER
|
7621 EXCHGID4_FLAG_BIND_PRINC_STATEID
,
7623 msg
.rpc_argp
= &calldata
->args
;
7624 msg
.rpc_resp
= &calldata
->res
;
7625 task_setup_data
.callback_data
= calldata
;
7627 task
= rpc_run_task(&task_setup_data
);
7629 status
= PTR_ERR(task
);
7634 status
= rpc_wait_for_completion_task(task
);
7636 status
= calldata
->rpc_status
;
7637 } else /* session trunking test */
7638 status
= calldata
->rpc_status
;
7642 if (clp
->cl_implid
!= NULL
)
7643 dprintk("NFS reply exchange_id: Server Implementation ID: "
7644 "domain: %s, name: %s, date: %llu,%u\n",
7645 clp
->cl_implid
->domain
, clp
->cl_implid
->name
,
7646 clp
->cl_implid
->date
.seconds
,
7647 clp
->cl_implid
->date
.nseconds
);
7648 dprintk("NFS reply exchange_id: %d\n", status
);
7652 kfree(calldata
->res
.impl_id
);
7654 kfree(calldata
->res
.server_scope
);
7656 kfree(calldata
->res
.server_owner
);
7663 * nfs4_proc_exchange_id()
7665 * Returns zero, a negative errno, or a negative NFS4ERR status code.
7667 * Since the clientid has expired, all compounds using sessions
7668 * associated with the stale clientid will be returning
7669 * NFS4ERR_BADSESSION in the sequence operation, and will therefore
7670 * be in some phase of session reset.
7672 * Will attempt to negotiate SP4_MACH_CRED if krb5i / krb5p auth is used.
7674 int nfs4_proc_exchange_id(struct nfs_client
*clp
, struct rpc_cred
*cred
)
7676 rpc_authflavor_t authflavor
= clp
->cl_rpcclient
->cl_auth
->au_flavor
;
7679 /* try SP4_MACH_CRED if krb5i/p */
7680 if (authflavor
== RPC_AUTH_GSS_KRB5I
||
7681 authflavor
== RPC_AUTH_GSS_KRB5P
) {
7682 status
= _nfs4_proc_exchange_id(clp
, cred
, SP4_MACH_CRED
, NULL
);
7688 return _nfs4_proc_exchange_id(clp
, cred
, SP4_NONE
, NULL
);
7692 * nfs4_test_session_trunk
7694 * This is an add_xprt_test() test function called from
7695 * rpc_clnt_setup_test_and_add_xprt.
7697 * The rpc_xprt_switch is referrenced by rpc_clnt_setup_test_and_add_xprt
7698 * and is dereferrenced in nfs4_exchange_id_release
7700 * Upon success, add the new transport to the rpc_clnt
7702 * @clnt: struct rpc_clnt to get new transport
7703 * @xprt: the rpc_xprt to test
7704 * @data: call data for _nfs4_proc_exchange_id.
7706 int nfs4_test_session_trunk(struct rpc_clnt
*clnt
, struct rpc_xprt
*xprt
,
7709 struct nfs4_add_xprt_data
*adata
= (struct nfs4_add_xprt_data
*)data
;
7712 dprintk("--> %s try %s\n", __func__
,
7713 xprt
->address_strings
[RPC_DISPLAY_ADDR
]);
7715 sp4_how
= (adata
->clp
->cl_sp4_flags
== 0 ? SP4_NONE
: SP4_MACH_CRED
);
7717 /* Test connection for session trunking. Async exchange_id call */
7718 return _nfs4_proc_exchange_id(adata
->clp
, adata
->cred
, sp4_how
, xprt
);
7720 EXPORT_SYMBOL_GPL(nfs4_test_session_trunk
);
7722 static int _nfs4_proc_destroy_clientid(struct nfs_client
*clp
,
7723 struct rpc_cred
*cred
)
7725 struct rpc_message msg
= {
7726 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_DESTROY_CLIENTID
],
7732 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
7733 trace_nfs4_destroy_clientid(clp
, status
);
7735 dprintk("NFS: Got error %d from the server %s on "
7736 "DESTROY_CLIENTID.", status
, clp
->cl_hostname
);
7740 static int nfs4_proc_destroy_clientid(struct nfs_client
*clp
,
7741 struct rpc_cred
*cred
)
7746 for (loop
= NFS4_MAX_LOOP_ON_RECOVER
; loop
!= 0; loop
--) {
7747 ret
= _nfs4_proc_destroy_clientid(clp
, cred
);
7749 case -NFS4ERR_DELAY
:
7750 case -NFS4ERR_CLIENTID_BUSY
:
7760 int nfs4_destroy_clientid(struct nfs_client
*clp
)
7762 struct rpc_cred
*cred
;
7765 if (clp
->cl_mvops
->minor_version
< 1)
7767 if (clp
->cl_exchange_flags
== 0)
7769 if (clp
->cl_preserve_clid
)
7771 cred
= nfs4_get_clid_cred(clp
);
7772 ret
= nfs4_proc_destroy_clientid(clp
, cred
);
7777 case -NFS4ERR_STALE_CLIENTID
:
7778 clp
->cl_exchange_flags
= 0;
7784 struct nfs4_get_lease_time_data
{
7785 struct nfs4_get_lease_time_args
*args
;
7786 struct nfs4_get_lease_time_res
*res
;
7787 struct nfs_client
*clp
;
7790 static void nfs4_get_lease_time_prepare(struct rpc_task
*task
,
7793 struct nfs4_get_lease_time_data
*data
=
7794 (struct nfs4_get_lease_time_data
*)calldata
;
7796 dprintk("--> %s\n", __func__
);
7797 /* just setup sequence, do not trigger session recovery
7798 since we're invoked within one */
7799 nfs41_setup_sequence(data
->clp
->cl_session
,
7800 &data
->args
->la_seq_args
,
7801 &data
->res
->lr_seq_res
,
7803 dprintk("<-- %s\n", __func__
);
7807 * Called from nfs4_state_manager thread for session setup, so don't recover
7808 * from sequence operation or clientid errors.
7810 static void nfs4_get_lease_time_done(struct rpc_task
*task
, void *calldata
)
7812 struct nfs4_get_lease_time_data
*data
=
7813 (struct nfs4_get_lease_time_data
*)calldata
;
7815 dprintk("--> %s\n", __func__
);
7816 if (!nfs41_sequence_done(task
, &data
->res
->lr_seq_res
))
7818 switch (task
->tk_status
) {
7819 case -NFS4ERR_DELAY
:
7820 case -NFS4ERR_GRACE
:
7821 dprintk("%s Retry: tk_status %d\n", __func__
, task
->tk_status
);
7822 rpc_delay(task
, NFS4_POLL_RETRY_MIN
);
7823 task
->tk_status
= 0;
7825 case -NFS4ERR_RETRY_UNCACHED_REP
:
7826 rpc_restart_call_prepare(task
);
7829 dprintk("<-- %s\n", __func__
);
7832 static const struct rpc_call_ops nfs4_get_lease_time_ops
= {
7833 .rpc_call_prepare
= nfs4_get_lease_time_prepare
,
7834 .rpc_call_done
= nfs4_get_lease_time_done
,
7837 int nfs4_proc_get_lease_time(struct nfs_client
*clp
, struct nfs_fsinfo
*fsinfo
)
7839 struct rpc_task
*task
;
7840 struct nfs4_get_lease_time_args args
;
7841 struct nfs4_get_lease_time_res res
= {
7842 .lr_fsinfo
= fsinfo
,
7844 struct nfs4_get_lease_time_data data
= {
7849 struct rpc_message msg
= {
7850 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GET_LEASE_TIME
],
7854 struct rpc_task_setup task_setup
= {
7855 .rpc_client
= clp
->cl_rpcclient
,
7856 .rpc_message
= &msg
,
7857 .callback_ops
= &nfs4_get_lease_time_ops
,
7858 .callback_data
= &data
,
7859 .flags
= RPC_TASK_TIMEOUT
,
7863 nfs4_init_sequence(&args
.la_seq_args
, &res
.lr_seq_res
, 0);
7864 nfs4_set_sequence_privileged(&args
.la_seq_args
);
7865 dprintk("--> %s\n", __func__
);
7866 task
= rpc_run_task(&task_setup
);
7869 status
= PTR_ERR(task
);
7871 status
= task
->tk_status
;
7874 dprintk("<-- %s return %d\n", __func__
, status
);
7880 * Initialize the values to be used by the client in CREATE_SESSION
7881 * If nfs4_init_session set the fore channel request and response sizes,
7884 * Set the back channel max_resp_sz_cached to zero to force the client to
7885 * always set csa_cachethis to FALSE because the current implementation
7886 * of the back channel DRC only supports caching the CB_SEQUENCE operation.
7888 static void nfs4_init_channel_attrs(struct nfs41_create_session_args
*args
,
7889 struct rpc_clnt
*clnt
)
7891 unsigned int max_rqst_sz
, max_resp_sz
;
7892 unsigned int max_bc_payload
= rpc_max_bc_payload(clnt
);
7894 max_rqst_sz
= NFS_MAX_FILE_IO_SIZE
+ nfs41_maxwrite_overhead
;
7895 max_resp_sz
= NFS_MAX_FILE_IO_SIZE
+ nfs41_maxread_overhead
;
7897 /* Fore channel attributes */
7898 args
->fc_attrs
.max_rqst_sz
= max_rqst_sz
;
7899 args
->fc_attrs
.max_resp_sz
= max_resp_sz
;
7900 args
->fc_attrs
.max_ops
= NFS4_MAX_OPS
;
7901 args
->fc_attrs
.max_reqs
= max_session_slots
;
7903 dprintk("%s: Fore Channel : max_rqst_sz=%u max_resp_sz=%u "
7904 "max_ops=%u max_reqs=%u\n",
7906 args
->fc_attrs
.max_rqst_sz
, args
->fc_attrs
.max_resp_sz
,
7907 args
->fc_attrs
.max_ops
, args
->fc_attrs
.max_reqs
);
7909 /* Back channel attributes */
7910 args
->bc_attrs
.max_rqst_sz
= max_bc_payload
;
7911 args
->bc_attrs
.max_resp_sz
= max_bc_payload
;
7912 args
->bc_attrs
.max_resp_sz_cached
= 0;
7913 args
->bc_attrs
.max_ops
= NFS4_MAX_BACK_CHANNEL_OPS
;
7914 args
->bc_attrs
.max_reqs
= min_t(unsigned short, max_session_cb_slots
, 1);
7916 dprintk("%s: Back Channel : max_rqst_sz=%u max_resp_sz=%u "
7917 "max_resp_sz_cached=%u max_ops=%u max_reqs=%u\n",
7919 args
->bc_attrs
.max_rqst_sz
, args
->bc_attrs
.max_resp_sz
,
7920 args
->bc_attrs
.max_resp_sz_cached
, args
->bc_attrs
.max_ops
,
7921 args
->bc_attrs
.max_reqs
);
7924 static int nfs4_verify_fore_channel_attrs(struct nfs41_create_session_args
*args
,
7925 struct nfs41_create_session_res
*res
)
7927 struct nfs4_channel_attrs
*sent
= &args
->fc_attrs
;
7928 struct nfs4_channel_attrs
*rcvd
= &res
->fc_attrs
;
7930 if (rcvd
->max_resp_sz
> sent
->max_resp_sz
)
7933 * Our requested max_ops is the minimum we need; we're not
7934 * prepared to break up compounds into smaller pieces than that.
7935 * So, no point even trying to continue if the server won't
7938 if (rcvd
->max_ops
< sent
->max_ops
)
7940 if (rcvd
->max_reqs
== 0)
7942 if (rcvd
->max_reqs
> NFS4_MAX_SLOT_TABLE
)
7943 rcvd
->max_reqs
= NFS4_MAX_SLOT_TABLE
;
7947 static int nfs4_verify_back_channel_attrs(struct nfs41_create_session_args
*args
,
7948 struct nfs41_create_session_res
*res
)
7950 struct nfs4_channel_attrs
*sent
= &args
->bc_attrs
;
7951 struct nfs4_channel_attrs
*rcvd
= &res
->bc_attrs
;
7953 if (!(res
->flags
& SESSION4_BACK_CHAN
))
7955 if (rcvd
->max_rqst_sz
> sent
->max_rqst_sz
)
7957 if (rcvd
->max_resp_sz
< sent
->max_resp_sz
)
7959 if (rcvd
->max_resp_sz_cached
> sent
->max_resp_sz_cached
)
7961 if (rcvd
->max_ops
> sent
->max_ops
)
7963 if (rcvd
->max_reqs
> sent
->max_reqs
)
7969 static int nfs4_verify_channel_attrs(struct nfs41_create_session_args
*args
,
7970 struct nfs41_create_session_res
*res
)
7974 ret
= nfs4_verify_fore_channel_attrs(args
, res
);
7977 return nfs4_verify_back_channel_attrs(args
, res
);
7980 static void nfs4_update_session(struct nfs4_session
*session
,
7981 struct nfs41_create_session_res
*res
)
7983 nfs4_copy_sessionid(&session
->sess_id
, &res
->sessionid
);
7984 /* Mark client id and session as being confirmed */
7985 session
->clp
->cl_exchange_flags
|= EXCHGID4_FLAG_CONFIRMED_R
;
7986 set_bit(NFS4_SESSION_ESTABLISHED
, &session
->session_state
);
7987 session
->flags
= res
->flags
;
7988 memcpy(&session
->fc_attrs
, &res
->fc_attrs
, sizeof(session
->fc_attrs
));
7989 if (res
->flags
& SESSION4_BACK_CHAN
)
7990 memcpy(&session
->bc_attrs
, &res
->bc_attrs
,
7991 sizeof(session
->bc_attrs
));
7994 static int _nfs4_proc_create_session(struct nfs_client
*clp
,
7995 struct rpc_cred
*cred
)
7997 struct nfs4_session
*session
= clp
->cl_session
;
7998 struct nfs41_create_session_args args
= {
8000 .clientid
= clp
->cl_clientid
,
8001 .seqid
= clp
->cl_seqid
,
8002 .cb_program
= NFS4_CALLBACK
,
8004 struct nfs41_create_session_res res
;
8006 struct rpc_message msg
= {
8007 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_CREATE_SESSION
],
8014 nfs4_init_channel_attrs(&args
, clp
->cl_rpcclient
);
8015 args
.flags
= (SESSION4_PERSIST
| SESSION4_BACK_CHAN
);
8017 status
= rpc_call_sync(session
->clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
8018 trace_nfs4_create_session(clp
, status
);
8021 case -NFS4ERR_STALE_CLIENTID
:
8022 case -NFS4ERR_DELAY
:
8031 /* Verify the session's negotiated channel_attrs values */
8032 status
= nfs4_verify_channel_attrs(&args
, &res
);
8033 /* Increment the clientid slot sequence id */
8036 nfs4_update_session(session
, &res
);
8043 * Issues a CREATE_SESSION operation to the server.
8044 * It is the responsibility of the caller to verify the session is
8045 * expired before calling this routine.
8047 int nfs4_proc_create_session(struct nfs_client
*clp
, struct rpc_cred
*cred
)
8051 struct nfs4_session
*session
= clp
->cl_session
;
8053 dprintk("--> %s clp=%p session=%p\n", __func__
, clp
, session
);
8055 status
= _nfs4_proc_create_session(clp
, cred
);
8059 /* Init or reset the session slot tables */
8060 status
= nfs4_setup_session_slot_tables(session
);
8061 dprintk("slot table setup returned %d\n", status
);
8065 ptr
= (unsigned *)&session
->sess_id
.data
[0];
8066 dprintk("%s client>seqid %d sessionid %u:%u:%u:%u\n", __func__
,
8067 clp
->cl_seqid
, ptr
[0], ptr
[1], ptr
[2], ptr
[3]);
8069 dprintk("<-- %s\n", __func__
);
8074 * Issue the over-the-wire RPC DESTROY_SESSION.
8075 * The caller must serialize access to this routine.
8077 int nfs4_proc_destroy_session(struct nfs4_session
*session
,
8078 struct rpc_cred
*cred
)
8080 struct rpc_message msg
= {
8081 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_DESTROY_SESSION
],
8082 .rpc_argp
= session
,
8087 dprintk("--> nfs4_proc_destroy_session\n");
8089 /* session is still being setup */
8090 if (!test_and_clear_bit(NFS4_SESSION_ESTABLISHED
, &session
->session_state
))
8093 status
= rpc_call_sync(session
->clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
8094 trace_nfs4_destroy_session(session
->clp
, status
);
8097 dprintk("NFS: Got error %d from the server on DESTROY_SESSION. "
8098 "Session has been destroyed regardless...\n", status
);
8100 dprintk("<-- nfs4_proc_destroy_session\n");
8105 * Renew the cl_session lease.
8107 struct nfs4_sequence_data
{
8108 struct nfs_client
*clp
;
8109 struct nfs4_sequence_args args
;
8110 struct nfs4_sequence_res res
;
8113 static void nfs41_sequence_release(void *data
)
8115 struct nfs4_sequence_data
*calldata
= data
;
8116 struct nfs_client
*clp
= calldata
->clp
;
8118 if (atomic_read(&clp
->cl_count
) > 1)
8119 nfs4_schedule_state_renewal(clp
);
8120 nfs_put_client(clp
);
8124 static int nfs41_sequence_handle_errors(struct rpc_task
*task
, struct nfs_client
*clp
)
8126 switch(task
->tk_status
) {
8127 case -NFS4ERR_DELAY
:
8128 rpc_delay(task
, NFS4_POLL_RETRY_MAX
);
8131 nfs4_schedule_lease_recovery(clp
);
8136 static void nfs41_sequence_call_done(struct rpc_task
*task
, void *data
)
8138 struct nfs4_sequence_data
*calldata
= data
;
8139 struct nfs_client
*clp
= calldata
->clp
;
8141 if (!nfs41_sequence_done(task
, task
->tk_msg
.rpc_resp
))
8144 trace_nfs4_sequence(clp
, task
->tk_status
);
8145 if (task
->tk_status
< 0) {
8146 dprintk("%s ERROR %d\n", __func__
, task
->tk_status
);
8147 if (atomic_read(&clp
->cl_count
) == 1)
8150 if (nfs41_sequence_handle_errors(task
, clp
) == -EAGAIN
) {
8151 rpc_restart_call_prepare(task
);
8155 dprintk("%s rpc_cred %p\n", __func__
, task
->tk_msg
.rpc_cred
);
8157 dprintk("<-- %s\n", __func__
);
8160 static void nfs41_sequence_prepare(struct rpc_task
*task
, void *data
)
8162 struct nfs4_sequence_data
*calldata
= data
;
8163 struct nfs_client
*clp
= calldata
->clp
;
8164 struct nfs4_sequence_args
*args
;
8165 struct nfs4_sequence_res
*res
;
8167 args
= task
->tk_msg
.rpc_argp
;
8168 res
= task
->tk_msg
.rpc_resp
;
8170 nfs41_setup_sequence(clp
->cl_session
, args
, res
, task
);
8173 static const struct rpc_call_ops nfs41_sequence_ops
= {
8174 .rpc_call_done
= nfs41_sequence_call_done
,
8175 .rpc_call_prepare
= nfs41_sequence_prepare
,
8176 .rpc_release
= nfs41_sequence_release
,
8179 static struct rpc_task
*_nfs41_proc_sequence(struct nfs_client
*clp
,
8180 struct rpc_cred
*cred
,
8183 struct nfs4_sequence_data
*calldata
;
8184 struct rpc_message msg
= {
8185 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SEQUENCE
],
8188 struct rpc_task_setup task_setup_data
= {
8189 .rpc_client
= clp
->cl_rpcclient
,
8190 .rpc_message
= &msg
,
8191 .callback_ops
= &nfs41_sequence_ops
,
8192 .flags
= RPC_TASK_ASYNC
| RPC_TASK_TIMEOUT
,
8195 if (!atomic_inc_not_zero(&clp
->cl_count
))
8196 return ERR_PTR(-EIO
);
8197 calldata
= kzalloc(sizeof(*calldata
), GFP_NOFS
);
8198 if (calldata
== NULL
) {
8199 nfs_put_client(clp
);
8200 return ERR_PTR(-ENOMEM
);
8202 nfs4_init_sequence(&calldata
->args
, &calldata
->res
, 0);
8204 nfs4_set_sequence_privileged(&calldata
->args
);
8205 msg
.rpc_argp
= &calldata
->args
;
8206 msg
.rpc_resp
= &calldata
->res
;
8207 calldata
->clp
= clp
;
8208 task_setup_data
.callback_data
= calldata
;
8210 return rpc_run_task(&task_setup_data
);
8213 static int nfs41_proc_async_sequence(struct nfs_client
*clp
, struct rpc_cred
*cred
, unsigned renew_flags
)
8215 struct rpc_task
*task
;
8218 if ((renew_flags
& NFS4_RENEW_TIMEOUT
) == 0)
8220 task
= _nfs41_proc_sequence(clp
, cred
, false);
8222 ret
= PTR_ERR(task
);
8224 rpc_put_task_async(task
);
8225 dprintk("<-- %s status=%d\n", __func__
, ret
);
8229 static int nfs4_proc_sequence(struct nfs_client
*clp
, struct rpc_cred
*cred
)
8231 struct rpc_task
*task
;
8234 task
= _nfs41_proc_sequence(clp
, cred
, true);
8236 ret
= PTR_ERR(task
);
8239 ret
= rpc_wait_for_completion_task(task
);
8241 ret
= task
->tk_status
;
8244 dprintk("<-- %s status=%d\n", __func__
, ret
);
8248 struct nfs4_reclaim_complete_data
{
8249 struct nfs_client
*clp
;
8250 struct nfs41_reclaim_complete_args arg
;
8251 struct nfs41_reclaim_complete_res res
;
8254 static void nfs4_reclaim_complete_prepare(struct rpc_task
*task
, void *data
)
8256 struct nfs4_reclaim_complete_data
*calldata
= data
;
8258 nfs41_setup_sequence(calldata
->clp
->cl_session
,
8259 &calldata
->arg
.seq_args
,
8260 &calldata
->res
.seq_res
,
8264 static int nfs41_reclaim_complete_handle_errors(struct rpc_task
*task
, struct nfs_client
*clp
)
8266 switch(task
->tk_status
) {
8268 case -NFS4ERR_COMPLETE_ALREADY
:
8269 case -NFS4ERR_WRONG_CRED
: /* What to do here? */
8271 case -NFS4ERR_DELAY
:
8272 rpc_delay(task
, NFS4_POLL_RETRY_MAX
);
8274 case -NFS4ERR_RETRY_UNCACHED_REP
:
8277 nfs4_schedule_lease_recovery(clp
);
8282 static void nfs4_reclaim_complete_done(struct rpc_task
*task
, void *data
)
8284 struct nfs4_reclaim_complete_data
*calldata
= data
;
8285 struct nfs_client
*clp
= calldata
->clp
;
8286 struct nfs4_sequence_res
*res
= &calldata
->res
.seq_res
;
8288 dprintk("--> %s\n", __func__
);
8289 if (!nfs41_sequence_done(task
, res
))
8292 trace_nfs4_reclaim_complete(clp
, task
->tk_status
);
8293 if (nfs41_reclaim_complete_handle_errors(task
, clp
) == -EAGAIN
) {
8294 rpc_restart_call_prepare(task
);
8297 dprintk("<-- %s\n", __func__
);
8300 static void nfs4_free_reclaim_complete_data(void *data
)
8302 struct nfs4_reclaim_complete_data
*calldata
= data
;
8307 static const struct rpc_call_ops nfs4_reclaim_complete_call_ops
= {
8308 .rpc_call_prepare
= nfs4_reclaim_complete_prepare
,
8309 .rpc_call_done
= nfs4_reclaim_complete_done
,
8310 .rpc_release
= nfs4_free_reclaim_complete_data
,
8314 * Issue a global reclaim complete.
8316 static int nfs41_proc_reclaim_complete(struct nfs_client
*clp
,
8317 struct rpc_cred
*cred
)
8319 struct nfs4_reclaim_complete_data
*calldata
;
8320 struct rpc_task
*task
;
8321 struct rpc_message msg
= {
8322 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RECLAIM_COMPLETE
],
8325 struct rpc_task_setup task_setup_data
= {
8326 .rpc_client
= clp
->cl_rpcclient
,
8327 .rpc_message
= &msg
,
8328 .callback_ops
= &nfs4_reclaim_complete_call_ops
,
8329 .flags
= RPC_TASK_ASYNC
,
8331 int status
= -ENOMEM
;
8333 dprintk("--> %s\n", __func__
);
8334 calldata
= kzalloc(sizeof(*calldata
), GFP_NOFS
);
8335 if (calldata
== NULL
)
8337 calldata
->clp
= clp
;
8338 calldata
->arg
.one_fs
= 0;
8340 nfs4_init_sequence(&calldata
->arg
.seq_args
, &calldata
->res
.seq_res
, 0);
8341 nfs4_set_sequence_privileged(&calldata
->arg
.seq_args
);
8342 msg
.rpc_argp
= &calldata
->arg
;
8343 msg
.rpc_resp
= &calldata
->res
;
8344 task_setup_data
.callback_data
= calldata
;
8345 task
= rpc_run_task(&task_setup_data
);
8347 status
= PTR_ERR(task
);
8350 status
= nfs4_wait_for_completion_rpc_task(task
);
8352 status
= task
->tk_status
;
8356 dprintk("<-- %s status=%d\n", __func__
, status
);
8361 nfs4_layoutget_prepare(struct rpc_task
*task
, void *calldata
)
8363 struct nfs4_layoutget
*lgp
= calldata
;
8364 struct nfs_server
*server
= NFS_SERVER(lgp
->args
.inode
);
8365 struct nfs4_session
*session
= nfs4_get_session(server
);
8367 dprintk("--> %s\n", __func__
);
8368 nfs41_setup_sequence(session
, &lgp
->args
.seq_args
,
8369 &lgp
->res
.seq_res
, task
);
8370 dprintk("<-- %s\n", __func__
);
8373 static void nfs4_layoutget_done(struct rpc_task
*task
, void *calldata
)
8375 struct nfs4_layoutget
*lgp
= calldata
;
8377 dprintk("--> %s\n", __func__
);
8378 nfs41_sequence_process(task
, &lgp
->res
.seq_res
);
8379 dprintk("<-- %s\n", __func__
);
8383 nfs4_layoutget_handle_exception(struct rpc_task
*task
,
8384 struct nfs4_layoutget
*lgp
, struct nfs4_exception
*exception
)
8386 struct inode
*inode
= lgp
->args
.inode
;
8387 struct nfs_server
*server
= NFS_SERVER(inode
);
8388 struct pnfs_layout_hdr
*lo
;
8389 int nfs4err
= task
->tk_status
;
8390 int err
, status
= 0;
8393 dprintk("--> %s tk_status => %d\n", __func__
, -task
->tk_status
);
8400 * NFS4ERR_LAYOUTUNAVAILABLE means we are not supposed to use pnfs
8401 * on the file. set tk_status to -ENODATA to tell upper layer to
8404 case -NFS4ERR_LAYOUTUNAVAILABLE
:
8408 * NFS4ERR_BADLAYOUT means the MDS cannot return a layout of
8409 * length lgp->args.minlength != 0 (see RFC5661 section 18.43.3).
8411 case -NFS4ERR_BADLAYOUT
:
8412 status
= -EOVERFLOW
;
8415 * NFS4ERR_LAYOUTTRYLATER is a conflict with another client
8416 * (or clients) writing to the same RAID stripe except when
8417 * the minlength argument is 0 (see RFC5661 section 18.43.3).
8419 * Treat it like we would RECALLCONFLICT -- we retry for a little
8420 * while, and then eventually give up.
8422 case -NFS4ERR_LAYOUTTRYLATER
:
8423 if (lgp
->args
.minlength
== 0) {
8424 status
= -EOVERFLOW
;
8429 case -NFS4ERR_RECALLCONFLICT
:
8430 status
= -ERECALLCONFLICT
;
8432 case -NFS4ERR_DELEG_REVOKED
:
8433 case -NFS4ERR_ADMIN_REVOKED
:
8434 case -NFS4ERR_EXPIRED
:
8435 case -NFS4ERR_BAD_STATEID
:
8436 exception
->timeout
= 0;
8437 spin_lock(&inode
->i_lock
);
8438 lo
= NFS_I(inode
)->layout
;
8439 /* If the open stateid was bad, then recover it. */
8440 if (!lo
|| test_bit(NFS_LAYOUT_INVALID_STID
, &lo
->plh_flags
) ||
8441 nfs4_stateid_match_other(&lgp
->args
.stateid
,
8442 &lgp
->args
.ctx
->state
->stateid
)) {
8443 spin_unlock(&inode
->i_lock
);
8444 exception
->state
= lgp
->args
.ctx
->state
;
8445 exception
->stateid
= &lgp
->args
.stateid
;
8450 * Mark the bad layout state as invalid, then retry
8452 pnfs_mark_layout_stateid_invalid(lo
, &head
);
8453 spin_unlock(&inode
->i_lock
);
8454 pnfs_free_lseg_list(&head
);
8459 err
= nfs4_handle_exception(server
, nfs4err
, exception
);
8461 if (exception
->retry
)
8467 dprintk("<-- %s\n", __func__
);
8471 static size_t max_response_pages(struct nfs_server
*server
)
8473 u32 max_resp_sz
= server
->nfs_client
->cl_session
->fc_attrs
.max_resp_sz
;
8474 return nfs_page_array_len(0, max_resp_sz
);
8477 static void nfs4_free_pages(struct page
**pages
, size_t size
)
8484 for (i
= 0; i
< size
; i
++) {
8487 __free_page(pages
[i
]);
8492 static struct page
**nfs4_alloc_pages(size_t size
, gfp_t gfp_flags
)
8494 struct page
**pages
;
8497 pages
= kcalloc(size
, sizeof(struct page
*), gfp_flags
);
8499 dprintk("%s: can't alloc array of %zu pages\n", __func__
, size
);
8503 for (i
= 0; i
< size
; i
++) {
8504 pages
[i
] = alloc_page(gfp_flags
);
8506 dprintk("%s: failed to allocate page\n", __func__
);
8507 nfs4_free_pages(pages
, size
);
8515 static void nfs4_layoutget_release(void *calldata
)
8517 struct nfs4_layoutget
*lgp
= calldata
;
8518 struct inode
*inode
= lgp
->args
.inode
;
8519 struct nfs_server
*server
= NFS_SERVER(inode
);
8520 size_t max_pages
= max_response_pages(server
);
8522 dprintk("--> %s\n", __func__
);
8523 nfs4_free_pages(lgp
->args
.layout
.pages
, max_pages
);
8524 pnfs_put_layout_hdr(NFS_I(inode
)->layout
);
8525 put_nfs_open_context(lgp
->args
.ctx
);
8527 dprintk("<-- %s\n", __func__
);
8530 static const struct rpc_call_ops nfs4_layoutget_call_ops
= {
8531 .rpc_call_prepare
= nfs4_layoutget_prepare
,
8532 .rpc_call_done
= nfs4_layoutget_done
,
8533 .rpc_release
= nfs4_layoutget_release
,
8536 struct pnfs_layout_segment
*
8537 nfs4_proc_layoutget(struct nfs4_layoutget
*lgp
, long *timeout
, gfp_t gfp_flags
)
8539 struct inode
*inode
= lgp
->args
.inode
;
8540 struct nfs_server
*server
= NFS_SERVER(inode
);
8541 size_t max_pages
= max_response_pages(server
);
8542 struct rpc_task
*task
;
8543 struct rpc_message msg
= {
8544 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LAYOUTGET
],
8545 .rpc_argp
= &lgp
->args
,
8546 .rpc_resp
= &lgp
->res
,
8547 .rpc_cred
= lgp
->cred
,
8549 struct rpc_task_setup task_setup_data
= {
8550 .rpc_client
= server
->client
,
8551 .rpc_message
= &msg
,
8552 .callback_ops
= &nfs4_layoutget_call_ops
,
8553 .callback_data
= lgp
,
8554 .flags
= RPC_TASK_ASYNC
,
8556 struct pnfs_layout_segment
*lseg
= NULL
;
8557 struct nfs4_exception exception
= {
8559 .timeout
= *timeout
,
8563 dprintk("--> %s\n", __func__
);
8565 /* nfs4_layoutget_release calls pnfs_put_layout_hdr */
8566 pnfs_get_layout_hdr(NFS_I(inode
)->layout
);
8568 lgp
->args
.layout
.pages
= nfs4_alloc_pages(max_pages
, gfp_flags
);
8569 if (!lgp
->args
.layout
.pages
) {
8570 nfs4_layoutget_release(lgp
);
8571 return ERR_PTR(-ENOMEM
);
8573 lgp
->args
.layout
.pglen
= max_pages
* PAGE_SIZE
;
8575 lgp
->res
.layoutp
= &lgp
->args
.layout
;
8576 lgp
->res
.seq_res
.sr_slot
= NULL
;
8577 nfs4_init_sequence(&lgp
->args
.seq_args
, &lgp
->res
.seq_res
, 0);
8579 task
= rpc_run_task(&task_setup_data
);
8581 return ERR_CAST(task
);
8582 status
= nfs4_wait_for_completion_rpc_task(task
);
8584 status
= nfs4_layoutget_handle_exception(task
, lgp
, &exception
);
8585 *timeout
= exception
.timeout
;
8588 trace_nfs4_layoutget(lgp
->args
.ctx
,
8594 /* if layoutp->len is 0, nfs4_layoutget_prepare called rpc_exit */
8595 if (status
== 0 && lgp
->res
.layoutp
->len
)
8596 lseg
= pnfs_layout_process(lgp
);
8597 nfs4_sequence_free_slot(&lgp
->res
.seq_res
);
8599 dprintk("<-- %s status=%d\n", __func__
, status
);
8601 return ERR_PTR(status
);
8606 nfs4_layoutreturn_prepare(struct rpc_task
*task
, void *calldata
)
8608 struct nfs4_layoutreturn
*lrp
= calldata
;
8610 dprintk("--> %s\n", __func__
);
8611 nfs41_setup_sequence(lrp
->clp
->cl_session
,
8612 &lrp
->args
.seq_args
,
8617 static void nfs4_layoutreturn_done(struct rpc_task
*task
, void *calldata
)
8619 struct nfs4_layoutreturn
*lrp
= calldata
;
8620 struct nfs_server
*server
;
8622 dprintk("--> %s\n", __func__
);
8624 if (!nfs41_sequence_process(task
, &lrp
->res
.seq_res
))
8627 server
= NFS_SERVER(lrp
->args
.inode
);
8628 switch (task
->tk_status
) {
8630 task
->tk_status
= 0;
8633 case -NFS4ERR_DELAY
:
8634 if (nfs4_async_handle_error(task
, server
, NULL
, NULL
) != -EAGAIN
)
8636 nfs4_sequence_free_slot(&lrp
->res
.seq_res
);
8637 rpc_restart_call_prepare(task
);
8640 dprintk("<-- %s\n", __func__
);
8643 static void nfs4_layoutreturn_release(void *calldata
)
8645 struct nfs4_layoutreturn
*lrp
= calldata
;
8646 struct pnfs_layout_hdr
*lo
= lrp
->args
.layout
;
8648 dprintk("--> %s\n", __func__
);
8649 pnfs_layoutreturn_free_lsegs(lo
, &lrp
->args
.stateid
, &lrp
->args
.range
,
8650 lrp
->res
.lrs_present
? &lrp
->res
.stateid
: NULL
);
8651 nfs4_sequence_free_slot(&lrp
->res
.seq_res
);
8652 if (lrp
->ld_private
.ops
&& lrp
->ld_private
.ops
->free
)
8653 lrp
->ld_private
.ops
->free(&lrp
->ld_private
);
8654 pnfs_put_layout_hdr(lrp
->args
.layout
);
8655 nfs_iput_and_deactive(lrp
->inode
);
8657 dprintk("<-- %s\n", __func__
);
8660 static const struct rpc_call_ops nfs4_layoutreturn_call_ops
= {
8661 .rpc_call_prepare
= nfs4_layoutreturn_prepare
,
8662 .rpc_call_done
= nfs4_layoutreturn_done
,
8663 .rpc_release
= nfs4_layoutreturn_release
,
8666 int nfs4_proc_layoutreturn(struct nfs4_layoutreturn
*lrp
, bool sync
)
8668 struct rpc_task
*task
;
8669 struct rpc_message msg
= {
8670 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LAYOUTRETURN
],
8671 .rpc_argp
= &lrp
->args
,
8672 .rpc_resp
= &lrp
->res
,
8673 .rpc_cred
= lrp
->cred
,
8675 struct rpc_task_setup task_setup_data
= {
8676 .rpc_client
= NFS_SERVER(lrp
->args
.inode
)->client
,
8677 .rpc_message
= &msg
,
8678 .callback_ops
= &nfs4_layoutreturn_call_ops
,
8679 .callback_data
= lrp
,
8683 nfs4_state_protect(NFS_SERVER(lrp
->args
.inode
)->nfs_client
,
8684 NFS_SP4_MACH_CRED_PNFS_CLEANUP
,
8685 &task_setup_data
.rpc_client
, &msg
);
8687 dprintk("--> %s\n", __func__
);
8689 lrp
->inode
= nfs_igrab_and_active(lrp
->args
.inode
);
8691 nfs4_layoutreturn_release(lrp
);
8694 task_setup_data
.flags
|= RPC_TASK_ASYNC
;
8696 nfs4_init_sequence(&lrp
->args
.seq_args
, &lrp
->res
.seq_res
, 1);
8697 task
= rpc_run_task(&task_setup_data
);
8699 return PTR_ERR(task
);
8701 status
= task
->tk_status
;
8702 trace_nfs4_layoutreturn(lrp
->args
.inode
, &lrp
->args
.stateid
, status
);
8703 dprintk("<-- %s status=%d\n", __func__
, status
);
8709 _nfs4_proc_getdeviceinfo(struct nfs_server
*server
,
8710 struct pnfs_device
*pdev
,
8711 struct rpc_cred
*cred
)
8713 struct nfs4_getdeviceinfo_args args
= {
8715 .notify_types
= NOTIFY_DEVICEID4_CHANGE
|
8716 NOTIFY_DEVICEID4_DELETE
,
8718 struct nfs4_getdeviceinfo_res res
= {
8721 struct rpc_message msg
= {
8722 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GETDEVICEINFO
],
8729 dprintk("--> %s\n", __func__
);
8730 status
= nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
8731 if (res
.notification
& ~args
.notify_types
)
8732 dprintk("%s: unsupported notification\n", __func__
);
8733 if (res
.notification
!= args
.notify_types
)
8736 dprintk("<-- %s status=%d\n", __func__
, status
);
8741 int nfs4_proc_getdeviceinfo(struct nfs_server
*server
,
8742 struct pnfs_device
*pdev
,
8743 struct rpc_cred
*cred
)
8745 struct nfs4_exception exception
= { };
8749 err
= nfs4_handle_exception(server
,
8750 _nfs4_proc_getdeviceinfo(server
, pdev
, cred
),
8752 } while (exception
.retry
);
8755 EXPORT_SYMBOL_GPL(nfs4_proc_getdeviceinfo
);
8757 static void nfs4_layoutcommit_prepare(struct rpc_task
*task
, void *calldata
)
8759 struct nfs4_layoutcommit_data
*data
= calldata
;
8760 struct nfs_server
*server
= NFS_SERVER(data
->args
.inode
);
8761 struct nfs4_session
*session
= nfs4_get_session(server
);
8763 nfs41_setup_sequence(session
,
8764 &data
->args
.seq_args
,
8770 nfs4_layoutcommit_done(struct rpc_task
*task
, void *calldata
)
8772 struct nfs4_layoutcommit_data
*data
= calldata
;
8773 struct nfs_server
*server
= NFS_SERVER(data
->args
.inode
);
8775 if (!nfs41_sequence_done(task
, &data
->res
.seq_res
))
8778 switch (task
->tk_status
) { /* Just ignore these failures */
8779 case -NFS4ERR_DELEG_REVOKED
: /* layout was recalled */
8780 case -NFS4ERR_BADIOMODE
: /* no IOMODE_RW layout for range */
8781 case -NFS4ERR_BADLAYOUT
: /* no layout */
8782 case -NFS4ERR_GRACE
: /* loca_recalim always false */
8783 task
->tk_status
= 0;
8787 if (nfs4_async_handle_error(task
, server
, NULL
, NULL
) == -EAGAIN
) {
8788 rpc_restart_call_prepare(task
);
8794 static void nfs4_layoutcommit_release(void *calldata
)
8796 struct nfs4_layoutcommit_data
*data
= calldata
;
8798 pnfs_cleanup_layoutcommit(data
);
8799 nfs_post_op_update_inode_force_wcc(data
->args
.inode
,
8801 put_rpccred(data
->cred
);
8802 nfs_iput_and_deactive(data
->inode
);
8806 static const struct rpc_call_ops nfs4_layoutcommit_ops
= {
8807 .rpc_call_prepare
= nfs4_layoutcommit_prepare
,
8808 .rpc_call_done
= nfs4_layoutcommit_done
,
8809 .rpc_release
= nfs4_layoutcommit_release
,
8813 nfs4_proc_layoutcommit(struct nfs4_layoutcommit_data
*data
, bool sync
)
8815 struct rpc_message msg
= {
8816 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LAYOUTCOMMIT
],
8817 .rpc_argp
= &data
->args
,
8818 .rpc_resp
= &data
->res
,
8819 .rpc_cred
= data
->cred
,
8821 struct rpc_task_setup task_setup_data
= {
8822 .task
= &data
->task
,
8823 .rpc_client
= NFS_CLIENT(data
->args
.inode
),
8824 .rpc_message
= &msg
,
8825 .callback_ops
= &nfs4_layoutcommit_ops
,
8826 .callback_data
= data
,
8828 struct rpc_task
*task
;
8831 dprintk("NFS: initiating layoutcommit call. sync %d "
8832 "lbw: %llu inode %lu\n", sync
,
8833 data
->args
.lastbytewritten
,
8834 data
->args
.inode
->i_ino
);
8837 data
->inode
= nfs_igrab_and_active(data
->args
.inode
);
8838 if (data
->inode
== NULL
) {
8839 nfs4_layoutcommit_release(data
);
8842 task_setup_data
.flags
= RPC_TASK_ASYNC
;
8844 nfs4_init_sequence(&data
->args
.seq_args
, &data
->res
.seq_res
, 1);
8845 task
= rpc_run_task(&task_setup_data
);
8847 return PTR_ERR(task
);
8849 status
= task
->tk_status
;
8850 trace_nfs4_layoutcommit(data
->args
.inode
, &data
->args
.stateid
, status
);
8851 dprintk("%s: status %d\n", __func__
, status
);
8857 * Use the state managment nfs_client cl_rpcclient, which uses krb5i (if
8858 * possible) as per RFC3530bis and RFC5661 Security Considerations sections
8861 _nfs41_proc_secinfo_no_name(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
8862 struct nfs_fsinfo
*info
,
8863 struct nfs4_secinfo_flavors
*flavors
, bool use_integrity
)
8865 struct nfs41_secinfo_no_name_args args
= {
8866 .style
= SECINFO_STYLE_CURRENT_FH
,
8868 struct nfs4_secinfo_res res
= {
8871 struct rpc_message msg
= {
8872 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SECINFO_NO_NAME
],
8876 struct rpc_clnt
*clnt
= server
->client
;
8877 struct rpc_cred
*cred
= NULL
;
8880 if (use_integrity
) {
8881 clnt
= server
->nfs_client
->cl_rpcclient
;
8882 cred
= nfs4_get_clid_cred(server
->nfs_client
);
8883 msg
.rpc_cred
= cred
;
8886 dprintk("--> %s\n", __func__
);
8887 status
= nfs4_call_sync(clnt
, server
, &msg
, &args
.seq_args
,
8889 dprintk("<-- %s status=%d\n", __func__
, status
);
8898 nfs41_proc_secinfo_no_name(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
8899 struct nfs_fsinfo
*info
, struct nfs4_secinfo_flavors
*flavors
)
8901 struct nfs4_exception exception
= { };
8904 /* first try using integrity protection */
8905 err
= -NFS4ERR_WRONGSEC
;
8907 /* try to use integrity protection with machine cred */
8908 if (_nfs4_is_integrity_protected(server
->nfs_client
))
8909 err
= _nfs41_proc_secinfo_no_name(server
, fhandle
, info
,
8913 * if unable to use integrity protection, or SECINFO with
8914 * integrity protection returns NFS4ERR_WRONGSEC (which is
8915 * disallowed by spec, but exists in deployed servers) use
8916 * the current filesystem's rpc_client and the user cred.
8918 if (err
== -NFS4ERR_WRONGSEC
)
8919 err
= _nfs41_proc_secinfo_no_name(server
, fhandle
, info
,
8924 case -NFS4ERR_WRONGSEC
:
8928 err
= nfs4_handle_exception(server
, err
, &exception
);
8930 } while (exception
.retry
);
8936 nfs41_find_root_sec(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
8937 struct nfs_fsinfo
*info
)
8941 rpc_authflavor_t flavor
= RPC_AUTH_MAXFLAVOR
;
8942 struct nfs4_secinfo_flavors
*flavors
;
8943 struct nfs4_secinfo4
*secinfo
;
8946 page
= alloc_page(GFP_KERNEL
);
8952 flavors
= page_address(page
);
8953 err
= nfs41_proc_secinfo_no_name(server
, fhandle
, info
, flavors
);
8956 * Fall back on "guess and check" method if
8957 * the server doesn't support SECINFO_NO_NAME
8959 if (err
== -NFS4ERR_WRONGSEC
|| err
== -ENOTSUPP
) {
8960 err
= nfs4_find_root_sec(server
, fhandle
, info
);
8966 for (i
= 0; i
< flavors
->num_flavors
; i
++) {
8967 secinfo
= &flavors
->flavors
[i
];
8969 switch (secinfo
->flavor
) {
8973 flavor
= rpcauth_get_pseudoflavor(secinfo
->flavor
,
8974 &secinfo
->flavor_info
);
8977 flavor
= RPC_AUTH_MAXFLAVOR
;
8981 if (!nfs_auth_info_match(&server
->auth_info
, flavor
))
8982 flavor
= RPC_AUTH_MAXFLAVOR
;
8984 if (flavor
!= RPC_AUTH_MAXFLAVOR
) {
8985 err
= nfs4_lookup_root_sec(server
, fhandle
,
8992 if (flavor
== RPC_AUTH_MAXFLAVOR
)
9003 static int _nfs41_test_stateid(struct nfs_server
*server
,
9004 nfs4_stateid
*stateid
,
9005 struct rpc_cred
*cred
)
9008 struct nfs41_test_stateid_args args
= {
9011 struct nfs41_test_stateid_res res
;
9012 struct rpc_message msg
= {
9013 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_TEST_STATEID
],
9018 struct rpc_clnt
*rpc_client
= server
->client
;
9020 nfs4_state_protect(server
->nfs_client
, NFS_SP4_MACH_CRED_STATEID
,
9023 dprintk("NFS call test_stateid %p\n", stateid
);
9024 nfs4_init_sequence(&args
.seq_args
, &res
.seq_res
, 0);
9025 nfs4_set_sequence_privileged(&args
.seq_args
);
9026 status
= nfs4_call_sync_sequence(rpc_client
, server
, &msg
,
9027 &args
.seq_args
, &res
.seq_res
);
9028 if (status
!= NFS_OK
) {
9029 dprintk("NFS reply test_stateid: failed, %d\n", status
);
9032 dprintk("NFS reply test_stateid: succeeded, %d\n", -res
.status
);
9036 static void nfs4_handle_delay_or_session_error(struct nfs_server
*server
,
9037 int err
, struct nfs4_exception
*exception
)
9039 exception
->retry
= 0;
9041 case -NFS4ERR_DELAY
:
9042 case -NFS4ERR_RETRY_UNCACHED_REP
:
9043 nfs4_handle_exception(server
, err
, exception
);
9045 case -NFS4ERR_BADSESSION
:
9046 case -NFS4ERR_BADSLOT
:
9047 case -NFS4ERR_BAD_HIGH_SLOT
:
9048 case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION
:
9049 case -NFS4ERR_DEADSESSION
:
9050 nfs4_do_handle_exception(server
, err
, exception
);
9055 * nfs41_test_stateid - perform a TEST_STATEID operation
9057 * @server: server / transport on which to perform the operation
9058 * @stateid: state ID to test
9061 * Returns NFS_OK if the server recognizes that "stateid" is valid.
9062 * Otherwise a negative NFS4ERR value is returned if the operation
9063 * failed or the state ID is not currently valid.
9065 static int nfs41_test_stateid(struct nfs_server
*server
,
9066 nfs4_stateid
*stateid
,
9067 struct rpc_cred
*cred
)
9069 struct nfs4_exception exception
= { };
9072 err
= _nfs41_test_stateid(server
, stateid
, cred
);
9073 nfs4_handle_delay_or_session_error(server
, err
, &exception
);
9074 } while (exception
.retry
);
9078 struct nfs_free_stateid_data
{
9079 struct nfs_server
*server
;
9080 struct nfs41_free_stateid_args args
;
9081 struct nfs41_free_stateid_res res
;
9084 static void nfs41_free_stateid_prepare(struct rpc_task
*task
, void *calldata
)
9086 struct nfs_free_stateid_data
*data
= calldata
;
9087 nfs41_setup_sequence(nfs4_get_session(data
->server
),
9088 &data
->args
.seq_args
,
9093 static void nfs41_free_stateid_done(struct rpc_task
*task
, void *calldata
)
9095 struct nfs_free_stateid_data
*data
= calldata
;
9097 nfs41_sequence_done(task
, &data
->res
.seq_res
);
9099 switch (task
->tk_status
) {
9100 case -NFS4ERR_DELAY
:
9101 if (nfs4_async_handle_error(task
, data
->server
, NULL
, NULL
) == -EAGAIN
)
9102 rpc_restart_call_prepare(task
);
9106 static void nfs41_free_stateid_release(void *calldata
)
9111 static const struct rpc_call_ops nfs41_free_stateid_ops
= {
9112 .rpc_call_prepare
= nfs41_free_stateid_prepare
,
9113 .rpc_call_done
= nfs41_free_stateid_done
,
9114 .rpc_release
= nfs41_free_stateid_release
,
9117 static struct rpc_task
*_nfs41_free_stateid(struct nfs_server
*server
,
9118 const nfs4_stateid
*stateid
,
9119 struct rpc_cred
*cred
,
9122 struct rpc_message msg
= {
9123 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_FREE_STATEID
],
9126 struct rpc_task_setup task_setup
= {
9127 .rpc_client
= server
->client
,
9128 .rpc_message
= &msg
,
9129 .callback_ops
= &nfs41_free_stateid_ops
,
9130 .flags
= RPC_TASK_ASYNC
,
9132 struct nfs_free_stateid_data
*data
;
9134 nfs4_state_protect(server
->nfs_client
, NFS_SP4_MACH_CRED_STATEID
,
9135 &task_setup
.rpc_client
, &msg
);
9137 dprintk("NFS call free_stateid %p\n", stateid
);
9138 data
= kmalloc(sizeof(*data
), GFP_NOFS
);
9140 return ERR_PTR(-ENOMEM
);
9141 data
->server
= server
;
9142 nfs4_stateid_copy(&data
->args
.stateid
, stateid
);
9144 task_setup
.callback_data
= data
;
9146 msg
.rpc_argp
= &data
->args
;
9147 msg
.rpc_resp
= &data
->res
;
9148 nfs4_init_sequence(&data
->args
.seq_args
, &data
->res
.seq_res
, 1);
9150 nfs4_set_sequence_privileged(&data
->args
.seq_args
);
9152 return rpc_run_task(&task_setup
);
9156 * nfs41_free_stateid - perform a FREE_STATEID operation
9158 * @server: server / transport on which to perform the operation
9159 * @stateid: state ID to release
9161 * @is_recovery: set to true if this call needs to be privileged
9163 * Note: this function is always asynchronous.
9165 static int nfs41_free_stateid(struct nfs_server
*server
,
9166 const nfs4_stateid
*stateid
,
9167 struct rpc_cred
*cred
,
9170 struct rpc_task
*task
;
9172 task
= _nfs41_free_stateid(server
, stateid
, cred
, is_recovery
);
9174 return PTR_ERR(task
);
9180 nfs41_free_lock_state(struct nfs_server
*server
, struct nfs4_lock_state
*lsp
)
9182 struct rpc_cred
*cred
= lsp
->ls_state
->owner
->so_cred
;
9184 nfs41_free_stateid(server
, &lsp
->ls_stateid
, cred
, false);
9185 nfs4_free_lock_state(server
, lsp
);
9188 static bool nfs41_match_stateid(const nfs4_stateid
*s1
,
9189 const nfs4_stateid
*s2
)
9191 if (s1
->type
!= s2
->type
)
9194 if (memcmp(s1
->other
, s2
->other
, sizeof(s1
->other
)) != 0)
9197 if (s1
->seqid
== s2
->seqid
)
9199 if (s1
->seqid
== 0 || s2
->seqid
== 0)
9205 #endif /* CONFIG_NFS_V4_1 */
9207 static bool nfs4_match_stateid(const nfs4_stateid
*s1
,
9208 const nfs4_stateid
*s2
)
9210 return nfs4_stateid_match(s1
, s2
);
9214 static const struct nfs4_state_recovery_ops nfs40_reboot_recovery_ops
= {
9215 .owner_flag_bit
= NFS_OWNER_RECLAIM_REBOOT
,
9216 .state_flag_bit
= NFS_STATE_RECLAIM_REBOOT
,
9217 .recover_open
= nfs4_open_reclaim
,
9218 .recover_lock
= nfs4_lock_reclaim
,
9219 .establish_clid
= nfs4_init_clientid
,
9220 .detect_trunking
= nfs40_discover_server_trunking
,
9223 #if defined(CONFIG_NFS_V4_1)
9224 static const struct nfs4_state_recovery_ops nfs41_reboot_recovery_ops
= {
9225 .owner_flag_bit
= NFS_OWNER_RECLAIM_REBOOT
,
9226 .state_flag_bit
= NFS_STATE_RECLAIM_REBOOT
,
9227 .recover_open
= nfs4_open_reclaim
,
9228 .recover_lock
= nfs4_lock_reclaim
,
9229 .establish_clid
= nfs41_init_clientid
,
9230 .reclaim_complete
= nfs41_proc_reclaim_complete
,
9231 .detect_trunking
= nfs41_discover_server_trunking
,
9233 #endif /* CONFIG_NFS_V4_1 */
9235 static const struct nfs4_state_recovery_ops nfs40_nograce_recovery_ops
= {
9236 .owner_flag_bit
= NFS_OWNER_RECLAIM_NOGRACE
,
9237 .state_flag_bit
= NFS_STATE_RECLAIM_NOGRACE
,
9238 .recover_open
= nfs40_open_expired
,
9239 .recover_lock
= nfs4_lock_expired
,
9240 .establish_clid
= nfs4_init_clientid
,
9243 #if defined(CONFIG_NFS_V4_1)
9244 static const struct nfs4_state_recovery_ops nfs41_nograce_recovery_ops
= {
9245 .owner_flag_bit
= NFS_OWNER_RECLAIM_NOGRACE
,
9246 .state_flag_bit
= NFS_STATE_RECLAIM_NOGRACE
,
9247 .recover_open
= nfs41_open_expired
,
9248 .recover_lock
= nfs41_lock_expired
,
9249 .establish_clid
= nfs41_init_clientid
,
9251 #endif /* CONFIG_NFS_V4_1 */
9253 static const struct nfs4_state_maintenance_ops nfs40_state_renewal_ops
= {
9254 .sched_state_renewal
= nfs4_proc_async_renew
,
9255 .get_state_renewal_cred_locked
= nfs4_get_renew_cred_locked
,
9256 .renew_lease
= nfs4_proc_renew
,
9259 #if defined(CONFIG_NFS_V4_1)
9260 static const struct nfs4_state_maintenance_ops nfs41_state_renewal_ops
= {
9261 .sched_state_renewal
= nfs41_proc_async_sequence
,
9262 .get_state_renewal_cred_locked
= nfs4_get_machine_cred_locked
,
9263 .renew_lease
= nfs4_proc_sequence
,
9267 static const struct nfs4_mig_recovery_ops nfs40_mig_recovery_ops
= {
9268 .get_locations
= _nfs40_proc_get_locations
,
9269 .fsid_present
= _nfs40_proc_fsid_present
,
9272 #if defined(CONFIG_NFS_V4_1)
9273 static const struct nfs4_mig_recovery_ops nfs41_mig_recovery_ops
= {
9274 .get_locations
= _nfs41_proc_get_locations
,
9275 .fsid_present
= _nfs41_proc_fsid_present
,
9277 #endif /* CONFIG_NFS_V4_1 */
9279 static const struct nfs4_minor_version_ops nfs_v4_0_minor_ops
= {
9281 .init_caps
= NFS_CAP_READDIRPLUS
9282 | NFS_CAP_ATOMIC_OPEN
9283 | NFS_CAP_POSIX_LOCK
,
9284 .init_client
= nfs40_init_client
,
9285 .shutdown_client
= nfs40_shutdown_client
,
9286 .match_stateid
= nfs4_match_stateid
,
9287 .find_root_sec
= nfs4_find_root_sec
,
9288 .free_lock_state
= nfs4_release_lockowner
,
9289 .test_and_free_expired
= nfs40_test_and_free_expired_stateid
,
9290 .alloc_seqid
= nfs_alloc_seqid
,
9291 .call_sync_ops
= &nfs40_call_sync_ops
,
9292 .reboot_recovery_ops
= &nfs40_reboot_recovery_ops
,
9293 .nograce_recovery_ops
= &nfs40_nograce_recovery_ops
,
9294 .state_renewal_ops
= &nfs40_state_renewal_ops
,
9295 .mig_recovery_ops
= &nfs40_mig_recovery_ops
,
9298 #if defined(CONFIG_NFS_V4_1)
9299 static struct nfs_seqid
*
9300 nfs_alloc_no_seqid(struct nfs_seqid_counter
*arg1
, gfp_t arg2
)
9305 static const struct nfs4_minor_version_ops nfs_v4_1_minor_ops
= {
9307 .init_caps
= NFS_CAP_READDIRPLUS
9308 | NFS_CAP_ATOMIC_OPEN
9309 | NFS_CAP_POSIX_LOCK
9310 | NFS_CAP_STATEID_NFSV41
9311 | NFS_CAP_ATOMIC_OPEN_V1
,
9312 .init_client
= nfs41_init_client
,
9313 .shutdown_client
= nfs41_shutdown_client
,
9314 .match_stateid
= nfs41_match_stateid
,
9315 .find_root_sec
= nfs41_find_root_sec
,
9316 .free_lock_state
= nfs41_free_lock_state
,
9317 .test_and_free_expired
= nfs41_test_and_free_expired_stateid
,
9318 .alloc_seqid
= nfs_alloc_no_seqid
,
9319 .session_trunk
= nfs4_test_session_trunk
,
9320 .call_sync_ops
= &nfs41_call_sync_ops
,
9321 .reboot_recovery_ops
= &nfs41_reboot_recovery_ops
,
9322 .nograce_recovery_ops
= &nfs41_nograce_recovery_ops
,
9323 .state_renewal_ops
= &nfs41_state_renewal_ops
,
9324 .mig_recovery_ops
= &nfs41_mig_recovery_ops
,
9328 #if defined(CONFIG_NFS_V4_2)
9329 static const struct nfs4_minor_version_ops nfs_v4_2_minor_ops
= {
9331 .init_caps
= NFS_CAP_READDIRPLUS
9332 | NFS_CAP_ATOMIC_OPEN
9333 | NFS_CAP_POSIX_LOCK
9334 | NFS_CAP_STATEID_NFSV41
9335 | NFS_CAP_ATOMIC_OPEN_V1
9338 | NFS_CAP_DEALLOCATE
9340 | NFS_CAP_LAYOUTSTATS
9342 .init_client
= nfs41_init_client
,
9343 .shutdown_client
= nfs41_shutdown_client
,
9344 .match_stateid
= nfs41_match_stateid
,
9345 .find_root_sec
= nfs41_find_root_sec
,
9346 .free_lock_state
= nfs41_free_lock_state
,
9347 .call_sync_ops
= &nfs41_call_sync_ops
,
9348 .test_and_free_expired
= nfs41_test_and_free_expired_stateid
,
9349 .alloc_seqid
= nfs_alloc_no_seqid
,
9350 .session_trunk
= nfs4_test_session_trunk
,
9351 .reboot_recovery_ops
= &nfs41_reboot_recovery_ops
,
9352 .nograce_recovery_ops
= &nfs41_nograce_recovery_ops
,
9353 .state_renewal_ops
= &nfs41_state_renewal_ops
,
9354 .mig_recovery_ops
= &nfs41_mig_recovery_ops
,
9358 const struct nfs4_minor_version_ops
*nfs_v4_minor_ops
[] = {
9359 [0] = &nfs_v4_0_minor_ops
,
9360 #if defined(CONFIG_NFS_V4_1)
9361 [1] = &nfs_v4_1_minor_ops
,
9363 #if defined(CONFIG_NFS_V4_2)
9364 [2] = &nfs_v4_2_minor_ops
,
9368 static ssize_t
nfs4_listxattr(struct dentry
*dentry
, char *list
, size_t size
)
9370 ssize_t error
, error2
;
9372 error
= generic_listxattr(dentry
, list
, size
);
9380 error2
= nfs4_listxattr_nfs4_label(d_inode(dentry
), list
, size
);
9383 return error
+ error2
;
9386 static const struct inode_operations nfs4_dir_inode_operations
= {
9387 .create
= nfs_create
,
9388 .lookup
= nfs_lookup
,
9389 .atomic_open
= nfs_atomic_open
,
9391 .unlink
= nfs_unlink
,
9392 .symlink
= nfs_symlink
,
9396 .rename
= nfs_rename
,
9397 .permission
= nfs_permission
,
9398 .getattr
= nfs_getattr
,
9399 .setattr
= nfs_setattr
,
9400 .listxattr
= nfs4_listxattr
,
9403 static const struct inode_operations nfs4_file_inode_operations
= {
9404 .permission
= nfs_permission
,
9405 .getattr
= nfs_getattr
,
9406 .setattr
= nfs_setattr
,
9407 .listxattr
= nfs4_listxattr
,
9410 const struct nfs_rpc_ops nfs_v4_clientops
= {
9411 .version
= 4, /* protocol version */
9412 .dentry_ops
= &nfs4_dentry_operations
,
9413 .dir_inode_ops
= &nfs4_dir_inode_operations
,
9414 .file_inode_ops
= &nfs4_file_inode_operations
,
9415 .file_ops
= &nfs4_file_operations
,
9416 .getroot
= nfs4_proc_get_root
,
9417 .submount
= nfs4_submount
,
9418 .try_mount
= nfs4_try_mount
,
9419 .getattr
= nfs4_proc_getattr
,
9420 .setattr
= nfs4_proc_setattr
,
9421 .lookup
= nfs4_proc_lookup
,
9422 .access
= nfs4_proc_access
,
9423 .readlink
= nfs4_proc_readlink
,
9424 .create
= nfs4_proc_create
,
9425 .remove
= nfs4_proc_remove
,
9426 .unlink_setup
= nfs4_proc_unlink_setup
,
9427 .unlink_rpc_prepare
= nfs4_proc_unlink_rpc_prepare
,
9428 .unlink_done
= nfs4_proc_unlink_done
,
9429 .rename_setup
= nfs4_proc_rename_setup
,
9430 .rename_rpc_prepare
= nfs4_proc_rename_rpc_prepare
,
9431 .rename_done
= nfs4_proc_rename_done
,
9432 .link
= nfs4_proc_link
,
9433 .symlink
= nfs4_proc_symlink
,
9434 .mkdir
= nfs4_proc_mkdir
,
9435 .rmdir
= nfs4_proc_remove
,
9436 .readdir
= nfs4_proc_readdir
,
9437 .mknod
= nfs4_proc_mknod
,
9438 .statfs
= nfs4_proc_statfs
,
9439 .fsinfo
= nfs4_proc_fsinfo
,
9440 .pathconf
= nfs4_proc_pathconf
,
9441 .set_capabilities
= nfs4_server_capabilities
,
9442 .decode_dirent
= nfs4_decode_dirent
,
9443 .pgio_rpc_prepare
= nfs4_proc_pgio_rpc_prepare
,
9444 .read_setup
= nfs4_proc_read_setup
,
9445 .read_done
= nfs4_read_done
,
9446 .write_setup
= nfs4_proc_write_setup
,
9447 .write_done
= nfs4_write_done
,
9448 .commit_setup
= nfs4_proc_commit_setup
,
9449 .commit_rpc_prepare
= nfs4_proc_commit_rpc_prepare
,
9450 .commit_done
= nfs4_commit_done
,
9451 .lock
= nfs4_proc_lock
,
9452 .clear_acl_cache
= nfs4_zap_acl_attr
,
9453 .close_context
= nfs4_close_context
,
9454 .open_context
= nfs4_atomic_open
,
9455 .have_delegation
= nfs4_have_delegation
,
9456 .return_delegation
= nfs4_inode_return_delegation
,
9457 .alloc_client
= nfs4_alloc_client
,
9458 .init_client
= nfs4_init_client
,
9459 .free_client
= nfs4_free_client
,
9460 .create_server
= nfs4_create_server
,
9461 .clone_server
= nfs_clone_server
,
9464 static const struct xattr_handler nfs4_xattr_nfs4_acl_handler
= {
9465 .name
= XATTR_NAME_NFSV4_ACL
,
9466 .list
= nfs4_xattr_list_nfs4_acl
,
9467 .get
= nfs4_xattr_get_nfs4_acl
,
9468 .set
= nfs4_xattr_set_nfs4_acl
,
9471 const struct xattr_handler
*nfs4_xattr_handlers
[] = {
9472 &nfs4_xattr_nfs4_acl_handler
,
9473 #ifdef CONFIG_NFS_V4_SECURITY_LABEL
9474 &nfs4_xattr_nfs4_label_handler
,