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 nfsi
->cache_validity
&= ~NFS_INO_REVAL_PAGECACHE
;
1094 nfsi
->attrtimeo_timestamp
= jiffies
;
1096 nfs_force_lookup_revalidate(dir
);
1097 if (cinfo
->before
!= dir
->i_version
)
1098 nfsi
->cache_validity
|= NFS_INO_INVALID_ACCESS
|
1099 NFS_INO_INVALID_ACL
;
1101 dir
->i_version
= cinfo
->after
;
1102 nfsi
->attr_gencount
= nfs_inc_attr_generation_counter();
1103 nfs_fscache_invalidate(dir
);
1104 spin_unlock(&dir
->i_lock
);
1107 struct nfs4_opendata
{
1109 struct nfs_openargs o_arg
;
1110 struct nfs_openres o_res
;
1111 struct nfs_open_confirmargs c_arg
;
1112 struct nfs_open_confirmres c_res
;
1113 struct nfs4_string owner_name
;
1114 struct nfs4_string group_name
;
1115 struct nfs4_label
*a_label
;
1116 struct nfs_fattr f_attr
;
1117 struct nfs4_label
*f_label
;
1119 struct dentry
*dentry
;
1120 struct nfs4_state_owner
*owner
;
1121 struct nfs4_state
*state
;
1123 unsigned long timestamp
;
1124 unsigned int rpc_done
: 1;
1125 unsigned int file_created
: 1;
1126 unsigned int is_recover
: 1;
1131 static bool nfs4_clear_cap_atomic_open_v1(struct nfs_server
*server
,
1132 int err
, struct nfs4_exception
*exception
)
1136 if (!(server
->caps
& NFS_CAP_ATOMIC_OPEN_V1
))
1138 server
->caps
&= ~NFS_CAP_ATOMIC_OPEN_V1
;
1139 exception
->retry
= 1;
1144 nfs4_map_atomic_open_share(struct nfs_server
*server
,
1145 fmode_t fmode
, int openflags
)
1149 switch (fmode
& (FMODE_READ
| FMODE_WRITE
)) {
1151 res
= NFS4_SHARE_ACCESS_READ
;
1154 res
= NFS4_SHARE_ACCESS_WRITE
;
1156 case FMODE_READ
|FMODE_WRITE
:
1157 res
= NFS4_SHARE_ACCESS_BOTH
;
1159 if (!(server
->caps
& NFS_CAP_ATOMIC_OPEN_V1
))
1161 /* Want no delegation if we're using O_DIRECT */
1162 if (openflags
& O_DIRECT
)
1163 res
|= NFS4_SHARE_WANT_NO_DELEG
;
1168 static enum open_claim_type4
1169 nfs4_map_atomic_open_claim(struct nfs_server
*server
,
1170 enum open_claim_type4 claim
)
1172 if (server
->caps
& NFS_CAP_ATOMIC_OPEN_V1
)
1177 case NFS4_OPEN_CLAIM_FH
:
1178 return NFS4_OPEN_CLAIM_NULL
;
1179 case NFS4_OPEN_CLAIM_DELEG_CUR_FH
:
1180 return NFS4_OPEN_CLAIM_DELEGATE_CUR
;
1181 case NFS4_OPEN_CLAIM_DELEG_PREV_FH
:
1182 return NFS4_OPEN_CLAIM_DELEGATE_PREV
;
1186 static void nfs4_init_opendata_res(struct nfs4_opendata
*p
)
1188 p
->o_res
.f_attr
= &p
->f_attr
;
1189 p
->o_res
.f_label
= p
->f_label
;
1190 p
->o_res
.seqid
= p
->o_arg
.seqid
;
1191 p
->c_res
.seqid
= p
->c_arg
.seqid
;
1192 p
->o_res
.server
= p
->o_arg
.server
;
1193 p
->o_res
.access_request
= p
->o_arg
.access
;
1194 nfs_fattr_init(&p
->f_attr
);
1195 nfs_fattr_init_names(&p
->f_attr
, &p
->owner_name
, &p
->group_name
);
1198 static struct nfs4_opendata
*nfs4_opendata_alloc(struct dentry
*dentry
,
1199 struct nfs4_state_owner
*sp
, fmode_t fmode
, int flags
,
1200 const struct iattr
*attrs
,
1201 struct nfs4_label
*label
,
1202 enum open_claim_type4 claim
,
1205 struct dentry
*parent
= dget_parent(dentry
);
1206 struct inode
*dir
= d_inode(parent
);
1207 struct nfs_server
*server
= NFS_SERVER(dir
);
1208 struct nfs_seqid
*(*alloc_seqid
)(struct nfs_seqid_counter
*, gfp_t
);
1209 struct nfs4_opendata
*p
;
1211 p
= kzalloc(sizeof(*p
), gfp_mask
);
1215 p
->f_label
= nfs4_label_alloc(server
, gfp_mask
);
1216 if (IS_ERR(p
->f_label
))
1219 p
->a_label
= nfs4_label_alloc(server
, gfp_mask
);
1220 if (IS_ERR(p
->a_label
))
1223 alloc_seqid
= server
->nfs_client
->cl_mvops
->alloc_seqid
;
1224 p
->o_arg
.seqid
= alloc_seqid(&sp
->so_seqid
, gfp_mask
);
1225 if (IS_ERR(p
->o_arg
.seqid
))
1226 goto err_free_label
;
1227 nfs_sb_active(dentry
->d_sb
);
1228 p
->dentry
= dget(dentry
);
1231 atomic_inc(&sp
->so_count
);
1232 p
->o_arg
.open_flags
= flags
;
1233 p
->o_arg
.fmode
= fmode
& (FMODE_READ
|FMODE_WRITE
);
1234 p
->o_arg
.umask
= current_umask();
1235 p
->o_arg
.claim
= nfs4_map_atomic_open_claim(server
, claim
);
1236 p
->o_arg
.share_access
= nfs4_map_atomic_open_share(server
,
1238 /* don't put an ACCESS op in OPEN compound if O_EXCL, because ACCESS
1239 * will return permission denied for all bits until close */
1240 if (!(flags
& O_EXCL
)) {
1241 /* ask server to check for all possible rights as results
1243 switch (p
->o_arg
.claim
) {
1246 case NFS4_OPEN_CLAIM_NULL
:
1247 case NFS4_OPEN_CLAIM_FH
:
1248 p
->o_arg
.access
= NFS4_ACCESS_READ
|
1249 NFS4_ACCESS_MODIFY
|
1250 NFS4_ACCESS_EXTEND
|
1251 NFS4_ACCESS_EXECUTE
;
1254 p
->o_arg
.clientid
= server
->nfs_client
->cl_clientid
;
1255 p
->o_arg
.id
.create_time
= ktime_to_ns(sp
->so_seqid
.create_time
);
1256 p
->o_arg
.id
.uniquifier
= sp
->so_seqid
.owner_id
;
1257 p
->o_arg
.name
= &dentry
->d_name
;
1258 p
->o_arg
.server
= server
;
1259 p
->o_arg
.bitmask
= nfs4_bitmask(server
, label
);
1260 p
->o_arg
.open_bitmap
= &nfs4_fattr_bitmap
[0];
1261 p
->o_arg
.label
= nfs4_label_copy(p
->a_label
, label
);
1262 switch (p
->o_arg
.claim
) {
1263 case NFS4_OPEN_CLAIM_NULL
:
1264 case NFS4_OPEN_CLAIM_DELEGATE_CUR
:
1265 case NFS4_OPEN_CLAIM_DELEGATE_PREV
:
1266 p
->o_arg
.fh
= NFS_FH(dir
);
1268 case NFS4_OPEN_CLAIM_PREVIOUS
:
1269 case NFS4_OPEN_CLAIM_FH
:
1270 case NFS4_OPEN_CLAIM_DELEG_CUR_FH
:
1271 case NFS4_OPEN_CLAIM_DELEG_PREV_FH
:
1272 p
->o_arg
.fh
= NFS_FH(d_inode(dentry
));
1274 if (attrs
!= NULL
&& attrs
->ia_valid
!= 0) {
1277 p
->o_arg
.u
.attrs
= &p
->attrs
;
1278 memcpy(&p
->attrs
, attrs
, sizeof(p
->attrs
));
1281 verf
[1] = current
->pid
;
1282 memcpy(p
->o_arg
.u
.verifier
.data
, verf
,
1283 sizeof(p
->o_arg
.u
.verifier
.data
));
1285 p
->c_arg
.fh
= &p
->o_res
.fh
;
1286 p
->c_arg
.stateid
= &p
->o_res
.stateid
;
1287 p
->c_arg
.seqid
= p
->o_arg
.seqid
;
1288 nfs4_init_opendata_res(p
);
1289 kref_init(&p
->kref
);
1293 nfs4_label_free(p
->a_label
);
1295 nfs4_label_free(p
->f_label
);
1303 static void nfs4_opendata_free(struct kref
*kref
)
1305 struct nfs4_opendata
*p
= container_of(kref
,
1306 struct nfs4_opendata
, kref
);
1307 struct super_block
*sb
= p
->dentry
->d_sb
;
1309 nfs_free_seqid(p
->o_arg
.seqid
);
1310 nfs4_sequence_free_slot(&p
->o_res
.seq_res
);
1311 if (p
->state
!= NULL
)
1312 nfs4_put_open_state(p
->state
);
1313 nfs4_put_state_owner(p
->owner
);
1315 nfs4_label_free(p
->a_label
);
1316 nfs4_label_free(p
->f_label
);
1320 nfs_sb_deactive(sb
);
1321 nfs_fattr_free_names(&p
->f_attr
);
1322 kfree(p
->f_attr
.mdsthreshold
);
1326 static void nfs4_opendata_put(struct nfs4_opendata
*p
)
1329 kref_put(&p
->kref
, nfs4_opendata_free
);
1332 static int nfs4_wait_for_completion_rpc_task(struct rpc_task
*task
)
1336 ret
= rpc_wait_for_completion_task(task
);
1340 static bool nfs4_mode_match_open_stateid(struct nfs4_state
*state
,
1343 switch(fmode
& (FMODE_READ
|FMODE_WRITE
)) {
1344 case FMODE_READ
|FMODE_WRITE
:
1345 return state
->n_rdwr
!= 0;
1347 return state
->n_wronly
!= 0;
1349 return state
->n_rdonly
!= 0;
1355 static int can_open_cached(struct nfs4_state
*state
, fmode_t mode
, int open_mode
)
1359 if (open_mode
& (O_EXCL
|O_TRUNC
))
1361 switch (mode
& (FMODE_READ
|FMODE_WRITE
)) {
1363 ret
|= test_bit(NFS_O_RDONLY_STATE
, &state
->flags
) != 0
1364 && state
->n_rdonly
!= 0;
1367 ret
|= test_bit(NFS_O_WRONLY_STATE
, &state
->flags
) != 0
1368 && state
->n_wronly
!= 0;
1370 case FMODE_READ
|FMODE_WRITE
:
1371 ret
|= test_bit(NFS_O_RDWR_STATE
, &state
->flags
) != 0
1372 && state
->n_rdwr
!= 0;
1378 static int can_open_delegated(struct nfs_delegation
*delegation
, fmode_t fmode
,
1379 enum open_claim_type4 claim
)
1381 if (delegation
== NULL
)
1383 if ((delegation
->type
& fmode
) != fmode
)
1385 if (test_bit(NFS_DELEGATION_RETURNING
, &delegation
->flags
))
1388 case NFS4_OPEN_CLAIM_NULL
:
1389 case NFS4_OPEN_CLAIM_FH
:
1391 case NFS4_OPEN_CLAIM_PREVIOUS
:
1392 if (!test_bit(NFS_DELEGATION_NEED_RECLAIM
, &delegation
->flags
))
1397 nfs_mark_delegation_referenced(delegation
);
1401 static void update_open_stateflags(struct nfs4_state
*state
, fmode_t fmode
)
1410 case FMODE_READ
|FMODE_WRITE
:
1413 nfs4_state_set_mode_locked(state
, state
->state
| fmode
);
1416 #ifdef CONFIG_NFS_V4_1
1417 static bool nfs_open_stateid_recover_openmode(struct nfs4_state
*state
)
1419 if (state
->n_rdonly
&& !test_bit(NFS_O_RDONLY_STATE
, &state
->flags
))
1421 if (state
->n_wronly
&& !test_bit(NFS_O_WRONLY_STATE
, &state
->flags
))
1423 if (state
->n_rdwr
&& !test_bit(NFS_O_RDWR_STATE
, &state
->flags
))
1427 #endif /* CONFIG_NFS_V4_1 */
1429 static void nfs_test_and_clear_all_open_stateid(struct nfs4_state
*state
)
1431 struct nfs_client
*clp
= state
->owner
->so_server
->nfs_client
;
1432 bool need_recover
= false;
1434 if (test_and_clear_bit(NFS_O_RDONLY_STATE
, &state
->flags
) && state
->n_rdonly
)
1435 need_recover
= true;
1436 if (test_and_clear_bit(NFS_O_WRONLY_STATE
, &state
->flags
) && state
->n_wronly
)
1437 need_recover
= true;
1438 if (test_and_clear_bit(NFS_O_RDWR_STATE
, &state
->flags
) && state
->n_rdwr
)
1439 need_recover
= true;
1441 nfs4_state_mark_reclaim_nograce(clp
, state
);
1444 static bool nfs_need_update_open_stateid(struct nfs4_state
*state
,
1445 const nfs4_stateid
*stateid
, nfs4_stateid
*freeme
)
1447 if (test_and_set_bit(NFS_OPEN_STATE
, &state
->flags
) == 0)
1449 if (!nfs4_stateid_match_other(stateid
, &state
->open_stateid
)) {
1450 nfs4_stateid_copy(freeme
, &state
->open_stateid
);
1451 nfs_test_and_clear_all_open_stateid(state
);
1454 if (nfs4_stateid_is_newer(stateid
, &state
->open_stateid
))
1459 static void nfs_resync_open_stateid_locked(struct nfs4_state
*state
)
1461 if (!(state
->n_wronly
|| state
->n_rdonly
|| state
->n_rdwr
))
1463 if (state
->n_wronly
)
1464 set_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
1465 if (state
->n_rdonly
)
1466 set_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
1468 set_bit(NFS_O_RDWR_STATE
, &state
->flags
);
1469 set_bit(NFS_OPEN_STATE
, &state
->flags
);
1472 static void nfs_clear_open_stateid_locked(struct nfs4_state
*state
,
1473 nfs4_stateid
*stateid
, fmode_t fmode
)
1475 clear_bit(NFS_O_RDWR_STATE
, &state
->flags
);
1476 switch (fmode
& (FMODE_READ
|FMODE_WRITE
)) {
1478 clear_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
1481 clear_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
1484 clear_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
1485 clear_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
1486 clear_bit(NFS_OPEN_STATE
, &state
->flags
);
1488 if (stateid
== NULL
)
1490 /* Handle OPEN+OPEN_DOWNGRADE races */
1491 if (nfs4_stateid_match_other(stateid
, &state
->open_stateid
) &&
1492 !nfs4_stateid_is_newer(stateid
, &state
->open_stateid
)) {
1493 nfs_resync_open_stateid_locked(state
);
1496 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) == 0)
1497 nfs4_stateid_copy(&state
->stateid
, stateid
);
1498 nfs4_stateid_copy(&state
->open_stateid
, stateid
);
1501 static void nfs_clear_open_stateid(struct nfs4_state
*state
,
1502 nfs4_stateid
*arg_stateid
,
1503 nfs4_stateid
*stateid
, fmode_t fmode
)
1505 write_seqlock(&state
->seqlock
);
1506 /* Ignore, if the CLOSE argment doesn't match the current stateid */
1507 if (nfs4_state_match_open_stateid_other(state
, arg_stateid
))
1508 nfs_clear_open_stateid_locked(state
, stateid
, fmode
);
1509 write_sequnlock(&state
->seqlock
);
1510 if (test_bit(NFS_STATE_RECLAIM_NOGRACE
, &state
->flags
))
1511 nfs4_schedule_state_manager(state
->owner
->so_server
->nfs_client
);
1514 static void nfs_set_open_stateid_locked(struct nfs4_state
*state
,
1515 const nfs4_stateid
*stateid
, fmode_t fmode
,
1516 nfs4_stateid
*freeme
)
1520 set_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
1523 set_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
1525 case FMODE_READ
|FMODE_WRITE
:
1526 set_bit(NFS_O_RDWR_STATE
, &state
->flags
);
1528 if (!nfs_need_update_open_stateid(state
, stateid
, freeme
))
1530 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) == 0)
1531 nfs4_stateid_copy(&state
->stateid
, stateid
);
1532 nfs4_stateid_copy(&state
->open_stateid
, stateid
);
1535 static void __update_open_stateid(struct nfs4_state
*state
,
1536 const nfs4_stateid
*open_stateid
,
1537 const nfs4_stateid
*deleg_stateid
,
1539 nfs4_stateid
*freeme
)
1542 * Protect the call to nfs4_state_set_mode_locked and
1543 * serialise the stateid update
1545 spin_lock(&state
->owner
->so_lock
);
1546 write_seqlock(&state
->seqlock
);
1547 if (deleg_stateid
!= NULL
) {
1548 nfs4_stateid_copy(&state
->stateid
, deleg_stateid
);
1549 set_bit(NFS_DELEGATED_STATE
, &state
->flags
);
1551 if (open_stateid
!= NULL
)
1552 nfs_set_open_stateid_locked(state
, open_stateid
, fmode
, freeme
);
1553 write_sequnlock(&state
->seqlock
);
1554 update_open_stateflags(state
, fmode
);
1555 spin_unlock(&state
->owner
->so_lock
);
1558 static int update_open_stateid(struct nfs4_state
*state
,
1559 const nfs4_stateid
*open_stateid
,
1560 const nfs4_stateid
*delegation
,
1563 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
1564 struct nfs_client
*clp
= server
->nfs_client
;
1565 struct nfs_inode
*nfsi
= NFS_I(state
->inode
);
1566 struct nfs_delegation
*deleg_cur
;
1567 nfs4_stateid freeme
= { };
1570 fmode
&= (FMODE_READ
|FMODE_WRITE
);
1573 deleg_cur
= rcu_dereference(nfsi
->delegation
);
1574 if (deleg_cur
== NULL
)
1577 spin_lock(&deleg_cur
->lock
);
1578 if (rcu_dereference(nfsi
->delegation
) != deleg_cur
||
1579 test_bit(NFS_DELEGATION_RETURNING
, &deleg_cur
->flags
) ||
1580 (deleg_cur
->type
& fmode
) != fmode
)
1581 goto no_delegation_unlock
;
1583 if (delegation
== NULL
)
1584 delegation
= &deleg_cur
->stateid
;
1585 else if (!nfs4_stateid_match(&deleg_cur
->stateid
, delegation
))
1586 goto no_delegation_unlock
;
1588 nfs_mark_delegation_referenced(deleg_cur
);
1589 __update_open_stateid(state
, open_stateid
, &deleg_cur
->stateid
,
1592 no_delegation_unlock
:
1593 spin_unlock(&deleg_cur
->lock
);
1597 if (!ret
&& open_stateid
!= NULL
) {
1598 __update_open_stateid(state
, open_stateid
, NULL
, fmode
, &freeme
);
1601 if (test_bit(NFS_STATE_RECLAIM_NOGRACE
, &state
->flags
))
1602 nfs4_schedule_state_manager(clp
);
1603 if (freeme
.type
!= 0)
1604 nfs4_test_and_free_stateid(server
, &freeme
,
1605 state
->owner
->so_cred
);
1610 static bool nfs4_update_lock_stateid(struct nfs4_lock_state
*lsp
,
1611 const nfs4_stateid
*stateid
)
1613 struct nfs4_state
*state
= lsp
->ls_state
;
1616 spin_lock(&state
->state_lock
);
1617 if (!nfs4_stateid_match_other(stateid
, &lsp
->ls_stateid
))
1619 if (!nfs4_stateid_is_newer(stateid
, &lsp
->ls_stateid
))
1621 nfs4_stateid_copy(&lsp
->ls_stateid
, stateid
);
1624 spin_unlock(&state
->state_lock
);
1628 static void nfs4_return_incompatible_delegation(struct inode
*inode
, fmode_t fmode
)
1630 struct nfs_delegation
*delegation
;
1633 delegation
= rcu_dereference(NFS_I(inode
)->delegation
);
1634 if (delegation
== NULL
|| (delegation
->type
& fmode
) == fmode
) {
1639 nfs4_inode_return_delegation(inode
);
1642 static struct nfs4_state
*nfs4_try_open_cached(struct nfs4_opendata
*opendata
)
1644 struct nfs4_state
*state
= opendata
->state
;
1645 struct nfs_inode
*nfsi
= NFS_I(state
->inode
);
1646 struct nfs_delegation
*delegation
;
1647 int open_mode
= opendata
->o_arg
.open_flags
;
1648 fmode_t fmode
= opendata
->o_arg
.fmode
;
1649 enum open_claim_type4 claim
= opendata
->o_arg
.claim
;
1650 nfs4_stateid stateid
;
1654 spin_lock(&state
->owner
->so_lock
);
1655 if (can_open_cached(state
, fmode
, open_mode
)) {
1656 update_open_stateflags(state
, fmode
);
1657 spin_unlock(&state
->owner
->so_lock
);
1658 goto out_return_state
;
1660 spin_unlock(&state
->owner
->so_lock
);
1662 delegation
= rcu_dereference(nfsi
->delegation
);
1663 if (!can_open_delegated(delegation
, fmode
, claim
)) {
1667 /* Save the delegation */
1668 nfs4_stateid_copy(&stateid
, &delegation
->stateid
);
1670 nfs_release_seqid(opendata
->o_arg
.seqid
);
1671 if (!opendata
->is_recover
) {
1672 ret
= nfs_may_open(state
->inode
, state
->owner
->so_cred
, open_mode
);
1678 /* Try to update the stateid using the delegation */
1679 if (update_open_stateid(state
, NULL
, &stateid
, fmode
))
1680 goto out_return_state
;
1683 return ERR_PTR(ret
);
1685 atomic_inc(&state
->count
);
1690 nfs4_opendata_check_deleg(struct nfs4_opendata
*data
, struct nfs4_state
*state
)
1692 struct nfs_client
*clp
= NFS_SERVER(state
->inode
)->nfs_client
;
1693 struct nfs_delegation
*delegation
;
1694 int delegation_flags
= 0;
1697 delegation
= rcu_dereference(NFS_I(state
->inode
)->delegation
);
1699 delegation_flags
= delegation
->flags
;
1701 switch (data
->o_arg
.claim
) {
1704 case NFS4_OPEN_CLAIM_DELEGATE_CUR
:
1705 case NFS4_OPEN_CLAIM_DELEG_CUR_FH
:
1706 pr_err_ratelimited("NFS: Broken NFSv4 server %s is "
1707 "returning a delegation for "
1708 "OPEN(CLAIM_DELEGATE_CUR)\n",
1712 if ((delegation_flags
& 1UL<<NFS_DELEGATION_NEED_RECLAIM
) == 0)
1713 nfs_inode_set_delegation(state
->inode
,
1714 data
->owner
->so_cred
,
1717 nfs_inode_reclaim_delegation(state
->inode
,
1718 data
->owner
->so_cred
,
1723 * Check the inode attributes against the CLAIM_PREVIOUS returned attributes
1724 * and update the nfs4_state.
1726 static struct nfs4_state
*
1727 _nfs4_opendata_reclaim_to_nfs4_state(struct nfs4_opendata
*data
)
1729 struct inode
*inode
= data
->state
->inode
;
1730 struct nfs4_state
*state
= data
->state
;
1733 if (!data
->rpc_done
) {
1734 if (data
->rpc_status
) {
1735 ret
= data
->rpc_status
;
1738 /* cached opens have already been processed */
1742 ret
= nfs_refresh_inode(inode
, &data
->f_attr
);
1746 if (data
->o_res
.delegation_type
!= 0)
1747 nfs4_opendata_check_deleg(data
, state
);
1749 update_open_stateid(state
, &data
->o_res
.stateid
, NULL
,
1751 atomic_inc(&state
->count
);
1755 return ERR_PTR(ret
);
1759 static struct nfs4_state
*
1760 _nfs4_opendata_to_nfs4_state(struct nfs4_opendata
*data
)
1762 struct inode
*inode
;
1763 struct nfs4_state
*state
= NULL
;
1766 if (!data
->rpc_done
) {
1767 state
= nfs4_try_open_cached(data
);
1768 trace_nfs4_cached_open(data
->state
);
1773 if (!(data
->f_attr
.valid
& NFS_ATTR_FATTR
))
1775 inode
= nfs_fhget(data
->dir
->d_sb
, &data
->o_res
.fh
, &data
->f_attr
, data
->f_label
);
1776 ret
= PTR_ERR(inode
);
1780 state
= nfs4_get_open_state(inode
, data
->owner
);
1783 if (data
->o_res
.delegation_type
!= 0)
1784 nfs4_opendata_check_deleg(data
, state
);
1785 update_open_stateid(state
, &data
->o_res
.stateid
, NULL
,
1789 nfs_release_seqid(data
->o_arg
.seqid
);
1794 return ERR_PTR(ret
);
1797 static struct nfs4_state
*
1798 nfs4_opendata_to_nfs4_state(struct nfs4_opendata
*data
)
1800 struct nfs4_state
*ret
;
1802 if (data
->o_arg
.claim
== NFS4_OPEN_CLAIM_PREVIOUS
)
1803 ret
=_nfs4_opendata_reclaim_to_nfs4_state(data
);
1805 ret
= _nfs4_opendata_to_nfs4_state(data
);
1806 nfs4_sequence_free_slot(&data
->o_res
.seq_res
);
1810 static struct nfs_open_context
*nfs4_state_find_open_context(struct nfs4_state
*state
)
1812 struct nfs_inode
*nfsi
= NFS_I(state
->inode
);
1813 struct nfs_open_context
*ctx
;
1815 spin_lock(&state
->inode
->i_lock
);
1816 list_for_each_entry(ctx
, &nfsi
->open_files
, list
) {
1817 if (ctx
->state
!= state
)
1819 get_nfs_open_context(ctx
);
1820 spin_unlock(&state
->inode
->i_lock
);
1823 spin_unlock(&state
->inode
->i_lock
);
1824 return ERR_PTR(-ENOENT
);
1827 static struct nfs4_opendata
*nfs4_open_recoverdata_alloc(struct nfs_open_context
*ctx
,
1828 struct nfs4_state
*state
, enum open_claim_type4 claim
)
1830 struct nfs4_opendata
*opendata
;
1832 opendata
= nfs4_opendata_alloc(ctx
->dentry
, state
->owner
, 0, 0,
1833 NULL
, NULL
, claim
, GFP_NOFS
);
1834 if (opendata
== NULL
)
1835 return ERR_PTR(-ENOMEM
);
1836 opendata
->state
= state
;
1837 atomic_inc(&state
->count
);
1841 static int nfs4_open_recover_helper(struct nfs4_opendata
*opendata
,
1844 struct nfs4_state
*newstate
;
1847 if (!nfs4_mode_match_open_stateid(opendata
->state
, fmode
))
1849 opendata
->o_arg
.open_flags
= 0;
1850 opendata
->o_arg
.fmode
= fmode
;
1851 opendata
->o_arg
.share_access
= nfs4_map_atomic_open_share(
1852 NFS_SB(opendata
->dentry
->d_sb
),
1854 memset(&opendata
->o_res
, 0, sizeof(opendata
->o_res
));
1855 memset(&opendata
->c_res
, 0, sizeof(opendata
->c_res
));
1856 nfs4_init_opendata_res(opendata
);
1857 ret
= _nfs4_recover_proc_open(opendata
);
1860 newstate
= nfs4_opendata_to_nfs4_state(opendata
);
1861 if (IS_ERR(newstate
))
1862 return PTR_ERR(newstate
);
1863 if (newstate
!= opendata
->state
)
1865 nfs4_close_state(newstate
, fmode
);
1869 static int nfs4_open_recover(struct nfs4_opendata
*opendata
, struct nfs4_state
*state
)
1873 /* Don't trigger recovery in nfs_test_and_clear_all_open_stateid */
1874 clear_bit(NFS_O_RDWR_STATE
, &state
->flags
);
1875 clear_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
1876 clear_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
1877 /* memory barrier prior to reading state->n_* */
1878 clear_bit(NFS_DELEGATED_STATE
, &state
->flags
);
1879 clear_bit(NFS_OPEN_STATE
, &state
->flags
);
1881 ret
= nfs4_open_recover_helper(opendata
, FMODE_READ
|FMODE_WRITE
);
1884 ret
= nfs4_open_recover_helper(opendata
, FMODE_WRITE
);
1887 ret
= nfs4_open_recover_helper(opendata
, FMODE_READ
);
1891 * We may have performed cached opens for all three recoveries.
1892 * Check if we need to update the current stateid.
1894 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) == 0 &&
1895 !nfs4_stateid_match(&state
->stateid
, &state
->open_stateid
)) {
1896 write_seqlock(&state
->seqlock
);
1897 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) == 0)
1898 nfs4_stateid_copy(&state
->stateid
, &state
->open_stateid
);
1899 write_sequnlock(&state
->seqlock
);
1906 * reclaim state on the server after a reboot.
1908 static int _nfs4_do_open_reclaim(struct nfs_open_context
*ctx
, struct nfs4_state
*state
)
1910 struct nfs_delegation
*delegation
;
1911 struct nfs4_opendata
*opendata
;
1912 fmode_t delegation_type
= 0;
1915 opendata
= nfs4_open_recoverdata_alloc(ctx
, state
,
1916 NFS4_OPEN_CLAIM_PREVIOUS
);
1917 if (IS_ERR(opendata
))
1918 return PTR_ERR(opendata
);
1920 delegation
= rcu_dereference(NFS_I(state
->inode
)->delegation
);
1921 if (delegation
!= NULL
&& test_bit(NFS_DELEGATION_NEED_RECLAIM
, &delegation
->flags
) != 0)
1922 delegation_type
= delegation
->type
;
1924 opendata
->o_arg
.u
.delegation_type
= delegation_type
;
1925 status
= nfs4_open_recover(opendata
, state
);
1926 nfs4_opendata_put(opendata
);
1930 static int nfs4_do_open_reclaim(struct nfs_open_context
*ctx
, struct nfs4_state
*state
)
1932 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
1933 struct nfs4_exception exception
= { };
1936 err
= _nfs4_do_open_reclaim(ctx
, state
);
1937 trace_nfs4_open_reclaim(ctx
, 0, err
);
1938 if (nfs4_clear_cap_atomic_open_v1(server
, err
, &exception
))
1940 if (err
!= -NFS4ERR_DELAY
)
1942 nfs4_handle_exception(server
, err
, &exception
);
1943 } while (exception
.retry
);
1947 static int nfs4_open_reclaim(struct nfs4_state_owner
*sp
, struct nfs4_state
*state
)
1949 struct nfs_open_context
*ctx
;
1952 ctx
= nfs4_state_find_open_context(state
);
1955 ret
= nfs4_do_open_reclaim(ctx
, state
);
1956 put_nfs_open_context(ctx
);
1960 static int nfs4_handle_delegation_recall_error(struct nfs_server
*server
, struct nfs4_state
*state
, const nfs4_stateid
*stateid
, int err
)
1964 printk(KERN_ERR
"NFS: %s: unhandled error "
1965 "%d.\n", __func__
, err
);
1971 case -NFS4ERR_BADSESSION
:
1972 case -NFS4ERR_BADSLOT
:
1973 case -NFS4ERR_BAD_HIGH_SLOT
:
1974 case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION
:
1975 case -NFS4ERR_DEADSESSION
:
1976 set_bit(NFS_DELEGATED_STATE
, &state
->flags
);
1977 nfs4_schedule_session_recovery(server
->nfs_client
->cl_session
, err
);
1979 case -NFS4ERR_STALE_CLIENTID
:
1980 case -NFS4ERR_STALE_STATEID
:
1981 set_bit(NFS_DELEGATED_STATE
, &state
->flags
);
1982 /* Don't recall a delegation if it was lost */
1983 nfs4_schedule_lease_recovery(server
->nfs_client
);
1985 case -NFS4ERR_MOVED
:
1986 nfs4_schedule_migration_recovery(server
);
1988 case -NFS4ERR_LEASE_MOVED
:
1989 nfs4_schedule_lease_moved_recovery(server
->nfs_client
);
1991 case -NFS4ERR_DELEG_REVOKED
:
1992 case -NFS4ERR_ADMIN_REVOKED
:
1993 case -NFS4ERR_EXPIRED
:
1994 case -NFS4ERR_BAD_STATEID
:
1995 case -NFS4ERR_OPENMODE
:
1996 nfs_inode_find_state_and_recover(state
->inode
,
1998 nfs4_schedule_stateid_recovery(server
, state
);
2000 case -NFS4ERR_DELAY
:
2001 case -NFS4ERR_GRACE
:
2002 set_bit(NFS_DELEGATED_STATE
, &state
->flags
);
2006 case -NFS4ERR_DENIED
:
2007 /* kill_proc(fl->fl_pid, SIGLOST, 1); */
2013 int nfs4_open_delegation_recall(struct nfs_open_context
*ctx
,
2014 struct nfs4_state
*state
, const nfs4_stateid
*stateid
,
2017 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
2018 struct nfs4_opendata
*opendata
;
2021 opendata
= nfs4_open_recoverdata_alloc(ctx
, state
,
2022 NFS4_OPEN_CLAIM_DELEG_CUR_FH
);
2023 if (IS_ERR(opendata
))
2024 return PTR_ERR(opendata
);
2025 nfs4_stateid_copy(&opendata
->o_arg
.u
.delegation
, stateid
);
2026 write_seqlock(&state
->seqlock
);
2027 nfs4_stateid_copy(&state
->stateid
, &state
->open_stateid
);
2028 write_sequnlock(&state
->seqlock
);
2029 clear_bit(NFS_DELEGATED_STATE
, &state
->flags
);
2030 switch (type
& (FMODE_READ
|FMODE_WRITE
)) {
2031 case FMODE_READ
|FMODE_WRITE
:
2033 err
= nfs4_open_recover_helper(opendata
, FMODE_READ
|FMODE_WRITE
);
2036 err
= nfs4_open_recover_helper(opendata
, FMODE_WRITE
);
2040 err
= nfs4_open_recover_helper(opendata
, FMODE_READ
);
2042 nfs4_opendata_put(opendata
);
2043 return nfs4_handle_delegation_recall_error(server
, state
, stateid
, err
);
2046 static void nfs4_open_confirm_prepare(struct rpc_task
*task
, void *calldata
)
2048 struct nfs4_opendata
*data
= calldata
;
2050 nfs40_setup_sequence(data
->o_arg
.server
->nfs_client
->cl_slot_tbl
,
2051 &data
->c_arg
.seq_args
, &data
->c_res
.seq_res
, task
);
2054 static void nfs4_open_confirm_done(struct rpc_task
*task
, void *calldata
)
2056 struct nfs4_opendata
*data
= calldata
;
2058 nfs40_sequence_done(task
, &data
->c_res
.seq_res
);
2060 data
->rpc_status
= task
->tk_status
;
2061 if (data
->rpc_status
== 0) {
2062 nfs4_stateid_copy(&data
->o_res
.stateid
, &data
->c_res
.stateid
);
2063 nfs_confirm_seqid(&data
->owner
->so_seqid
, 0);
2064 renew_lease(data
->o_res
.server
, data
->timestamp
);
2069 static void nfs4_open_confirm_release(void *calldata
)
2071 struct nfs4_opendata
*data
= calldata
;
2072 struct nfs4_state
*state
= NULL
;
2074 /* If this request hasn't been cancelled, do nothing */
2075 if (data
->cancelled
== 0)
2077 /* In case of error, no cleanup! */
2078 if (!data
->rpc_done
)
2080 state
= nfs4_opendata_to_nfs4_state(data
);
2082 nfs4_close_state(state
, data
->o_arg
.fmode
);
2084 nfs4_opendata_put(data
);
2087 static const struct rpc_call_ops nfs4_open_confirm_ops
= {
2088 .rpc_call_prepare
= nfs4_open_confirm_prepare
,
2089 .rpc_call_done
= nfs4_open_confirm_done
,
2090 .rpc_release
= nfs4_open_confirm_release
,
2094 * Note: On error, nfs4_proc_open_confirm will free the struct nfs4_opendata
2096 static int _nfs4_proc_open_confirm(struct nfs4_opendata
*data
)
2098 struct nfs_server
*server
= NFS_SERVER(d_inode(data
->dir
));
2099 struct rpc_task
*task
;
2100 struct rpc_message msg
= {
2101 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_OPEN_CONFIRM
],
2102 .rpc_argp
= &data
->c_arg
,
2103 .rpc_resp
= &data
->c_res
,
2104 .rpc_cred
= data
->owner
->so_cred
,
2106 struct rpc_task_setup task_setup_data
= {
2107 .rpc_client
= server
->client
,
2108 .rpc_message
= &msg
,
2109 .callback_ops
= &nfs4_open_confirm_ops
,
2110 .callback_data
= data
,
2111 .workqueue
= nfsiod_workqueue
,
2112 .flags
= RPC_TASK_ASYNC
,
2116 nfs4_init_sequence(&data
->c_arg
.seq_args
, &data
->c_res
.seq_res
, 1);
2117 kref_get(&data
->kref
);
2119 data
->rpc_status
= 0;
2120 data
->timestamp
= jiffies
;
2121 if (data
->is_recover
)
2122 nfs4_set_sequence_privileged(&data
->c_arg
.seq_args
);
2123 task
= rpc_run_task(&task_setup_data
);
2125 return PTR_ERR(task
);
2126 status
= nfs4_wait_for_completion_rpc_task(task
);
2128 data
->cancelled
= 1;
2131 status
= data
->rpc_status
;
2136 static void nfs4_open_prepare(struct rpc_task
*task
, void *calldata
)
2138 struct nfs4_opendata
*data
= calldata
;
2139 struct nfs4_state_owner
*sp
= data
->owner
;
2140 struct nfs_client
*clp
= sp
->so_server
->nfs_client
;
2141 enum open_claim_type4 claim
= data
->o_arg
.claim
;
2143 if (nfs_wait_on_sequence(data
->o_arg
.seqid
, task
) != 0)
2146 * Check if we still need to send an OPEN call, or if we can use
2147 * a delegation instead.
2149 if (data
->state
!= NULL
) {
2150 struct nfs_delegation
*delegation
;
2152 if (can_open_cached(data
->state
, data
->o_arg
.fmode
, data
->o_arg
.open_flags
))
2155 delegation
= rcu_dereference(NFS_I(data
->state
->inode
)->delegation
);
2156 if (can_open_delegated(delegation
, data
->o_arg
.fmode
, claim
))
2157 goto unlock_no_action
;
2160 /* Update client id. */
2161 data
->o_arg
.clientid
= clp
->cl_clientid
;
2165 case NFS4_OPEN_CLAIM_PREVIOUS
:
2166 case NFS4_OPEN_CLAIM_DELEG_CUR_FH
:
2167 case NFS4_OPEN_CLAIM_DELEG_PREV_FH
:
2168 data
->o_arg
.open_bitmap
= &nfs4_open_noattr_bitmap
[0];
2169 case NFS4_OPEN_CLAIM_FH
:
2170 task
->tk_msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_OPEN_NOATTR
];
2171 nfs_copy_fh(&data
->o_res
.fh
, data
->o_arg
.fh
);
2173 data
->timestamp
= jiffies
;
2174 if (nfs4_setup_sequence(data
->o_arg
.server
,
2175 &data
->o_arg
.seq_args
,
2176 &data
->o_res
.seq_res
,
2178 nfs_release_seqid(data
->o_arg
.seqid
);
2180 /* Set the create mode (note dependency on the session type) */
2181 data
->o_arg
.createmode
= NFS4_CREATE_UNCHECKED
;
2182 if (data
->o_arg
.open_flags
& O_EXCL
) {
2183 data
->o_arg
.createmode
= NFS4_CREATE_EXCLUSIVE
;
2184 if (nfs4_has_persistent_session(clp
))
2185 data
->o_arg
.createmode
= NFS4_CREATE_GUARDED
;
2186 else if (clp
->cl_mvops
->minor_version
> 0)
2187 data
->o_arg
.createmode
= NFS4_CREATE_EXCLUSIVE4_1
;
2191 trace_nfs4_cached_open(data
->state
);
2194 task
->tk_action
= NULL
;
2196 nfs4_sequence_done(task
, &data
->o_res
.seq_res
);
2199 static void nfs4_open_done(struct rpc_task
*task
, void *calldata
)
2201 struct nfs4_opendata
*data
= calldata
;
2203 data
->rpc_status
= task
->tk_status
;
2205 if (!nfs4_sequence_process(task
, &data
->o_res
.seq_res
))
2208 if (task
->tk_status
== 0) {
2209 if (data
->o_res
.f_attr
->valid
& NFS_ATTR_FATTR_TYPE
) {
2210 switch (data
->o_res
.f_attr
->mode
& S_IFMT
) {
2214 data
->rpc_status
= -ELOOP
;
2217 data
->rpc_status
= -EISDIR
;
2220 data
->rpc_status
= -ENOTDIR
;
2223 renew_lease(data
->o_res
.server
, data
->timestamp
);
2224 if (!(data
->o_res
.rflags
& NFS4_OPEN_RESULT_CONFIRM
))
2225 nfs_confirm_seqid(&data
->owner
->so_seqid
, 0);
2230 static void nfs4_open_release(void *calldata
)
2232 struct nfs4_opendata
*data
= calldata
;
2233 struct nfs4_state
*state
= NULL
;
2235 /* If this request hasn't been cancelled, do nothing */
2236 if (data
->cancelled
== 0)
2238 /* In case of error, no cleanup! */
2239 if (data
->rpc_status
!= 0 || !data
->rpc_done
)
2241 /* In case we need an open_confirm, no cleanup! */
2242 if (data
->o_res
.rflags
& NFS4_OPEN_RESULT_CONFIRM
)
2244 state
= nfs4_opendata_to_nfs4_state(data
);
2246 nfs4_close_state(state
, data
->o_arg
.fmode
);
2248 nfs4_opendata_put(data
);
2251 static const struct rpc_call_ops nfs4_open_ops
= {
2252 .rpc_call_prepare
= nfs4_open_prepare
,
2253 .rpc_call_done
= nfs4_open_done
,
2254 .rpc_release
= nfs4_open_release
,
2257 static int nfs4_run_open_task(struct nfs4_opendata
*data
, int isrecover
)
2259 struct inode
*dir
= d_inode(data
->dir
);
2260 struct nfs_server
*server
= NFS_SERVER(dir
);
2261 struct nfs_openargs
*o_arg
= &data
->o_arg
;
2262 struct nfs_openres
*o_res
= &data
->o_res
;
2263 struct rpc_task
*task
;
2264 struct rpc_message msg
= {
2265 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_OPEN
],
2268 .rpc_cred
= data
->owner
->so_cred
,
2270 struct rpc_task_setup task_setup_data
= {
2271 .rpc_client
= server
->client
,
2272 .rpc_message
= &msg
,
2273 .callback_ops
= &nfs4_open_ops
,
2274 .callback_data
= data
,
2275 .workqueue
= nfsiod_workqueue
,
2276 .flags
= RPC_TASK_ASYNC
,
2280 nfs4_init_sequence(&o_arg
->seq_args
, &o_res
->seq_res
, 1);
2281 kref_get(&data
->kref
);
2283 data
->rpc_status
= 0;
2284 data
->cancelled
= 0;
2285 data
->is_recover
= 0;
2287 nfs4_set_sequence_privileged(&o_arg
->seq_args
);
2288 data
->is_recover
= 1;
2290 task
= rpc_run_task(&task_setup_data
);
2292 return PTR_ERR(task
);
2293 status
= nfs4_wait_for_completion_rpc_task(task
);
2295 data
->cancelled
= 1;
2298 status
= data
->rpc_status
;
2304 static int _nfs4_recover_proc_open(struct nfs4_opendata
*data
)
2306 struct inode
*dir
= d_inode(data
->dir
);
2307 struct nfs_openres
*o_res
= &data
->o_res
;
2310 status
= nfs4_run_open_task(data
, 1);
2311 if (status
!= 0 || !data
->rpc_done
)
2314 nfs_fattr_map_and_free_names(NFS_SERVER(dir
), &data
->f_attr
);
2316 if (o_res
->rflags
& NFS4_OPEN_RESULT_CONFIRM
) {
2317 status
= _nfs4_proc_open_confirm(data
);
2326 * Additional permission checks in order to distinguish between an
2327 * open for read, and an open for execute. This works around the
2328 * fact that NFSv4 OPEN treats read and execute permissions as being
2330 * Note that in the non-execute case, we want to turn off permission
2331 * checking if we just created a new file (POSIX open() semantics).
2333 static int nfs4_opendata_access(struct rpc_cred
*cred
,
2334 struct nfs4_opendata
*opendata
,
2335 struct nfs4_state
*state
, fmode_t fmode
,
2338 struct nfs_access_entry cache
;
2341 /* access call failed or for some reason the server doesn't
2342 * support any access modes -- defer access call until later */
2343 if (opendata
->o_res
.access_supported
== 0)
2348 * Use openflags to check for exec, because fmode won't
2349 * always have FMODE_EXEC set when file open for exec.
2351 if (openflags
& __FMODE_EXEC
) {
2352 /* ONLY check for exec rights */
2354 } else if ((fmode
& FMODE_READ
) && !opendata
->file_created
)
2358 cache
.jiffies
= jiffies
;
2359 nfs_access_set_mask(&cache
, opendata
->o_res
.access_result
);
2360 nfs_access_add_cache(state
->inode
, &cache
);
2362 if ((mask
& ~cache
.mask
& (MAY_READ
| MAY_EXEC
)) == 0)
2365 /* even though OPEN succeeded, access is denied. Close the file */
2366 nfs4_close_state(state
, fmode
);
2371 * Note: On error, nfs4_proc_open will free the struct nfs4_opendata
2373 static int _nfs4_proc_open(struct nfs4_opendata
*data
)
2375 struct inode
*dir
= d_inode(data
->dir
);
2376 struct nfs_server
*server
= NFS_SERVER(dir
);
2377 struct nfs_openargs
*o_arg
= &data
->o_arg
;
2378 struct nfs_openres
*o_res
= &data
->o_res
;
2381 status
= nfs4_run_open_task(data
, 0);
2382 if (!data
->rpc_done
)
2385 if (status
== -NFS4ERR_BADNAME
&&
2386 !(o_arg
->open_flags
& O_CREAT
))
2391 nfs_fattr_map_and_free_names(server
, &data
->f_attr
);
2393 if (o_arg
->open_flags
& O_CREAT
) {
2394 update_changeattr(dir
, &o_res
->cinfo
);
2395 if (o_arg
->open_flags
& O_EXCL
)
2396 data
->file_created
= 1;
2397 else if (o_res
->cinfo
.before
!= o_res
->cinfo
.after
)
2398 data
->file_created
= 1;
2400 if ((o_res
->rflags
& NFS4_OPEN_RESULT_LOCKTYPE_POSIX
) == 0)
2401 server
->caps
&= ~NFS_CAP_POSIX_LOCK
;
2402 if(o_res
->rflags
& NFS4_OPEN_RESULT_CONFIRM
) {
2403 status
= _nfs4_proc_open_confirm(data
);
2407 if (!(o_res
->f_attr
->valid
& NFS_ATTR_FATTR
))
2408 nfs4_proc_getattr(server
, &o_res
->fh
, o_res
->f_attr
, o_res
->f_label
);
2412 static int nfs4_recover_expired_lease(struct nfs_server
*server
)
2414 return nfs4_client_recover_expired_lease(server
->nfs_client
);
2419 * reclaim state on the server after a network partition.
2420 * Assumes caller holds the appropriate lock
2422 static int _nfs4_open_expired(struct nfs_open_context
*ctx
, struct nfs4_state
*state
)
2424 struct nfs4_opendata
*opendata
;
2427 opendata
= nfs4_open_recoverdata_alloc(ctx
, state
,
2428 NFS4_OPEN_CLAIM_FH
);
2429 if (IS_ERR(opendata
))
2430 return PTR_ERR(opendata
);
2431 ret
= nfs4_open_recover(opendata
, state
);
2433 d_drop(ctx
->dentry
);
2434 nfs4_opendata_put(opendata
);
2438 static int nfs4_do_open_expired(struct nfs_open_context
*ctx
, struct nfs4_state
*state
)
2440 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
2441 struct nfs4_exception exception
= { };
2445 err
= _nfs4_open_expired(ctx
, state
);
2446 trace_nfs4_open_expired(ctx
, 0, err
);
2447 if (nfs4_clear_cap_atomic_open_v1(server
, err
, &exception
))
2452 case -NFS4ERR_GRACE
:
2453 case -NFS4ERR_DELAY
:
2454 nfs4_handle_exception(server
, err
, &exception
);
2457 } while (exception
.retry
);
2462 static int nfs4_open_expired(struct nfs4_state_owner
*sp
, struct nfs4_state
*state
)
2464 struct nfs_open_context
*ctx
;
2467 ctx
= nfs4_state_find_open_context(state
);
2470 ret
= nfs4_do_open_expired(ctx
, state
);
2471 put_nfs_open_context(ctx
);
2475 static void nfs_finish_clear_delegation_stateid(struct nfs4_state
*state
,
2476 const nfs4_stateid
*stateid
)
2478 nfs_remove_bad_delegation(state
->inode
, stateid
);
2479 write_seqlock(&state
->seqlock
);
2480 nfs4_stateid_copy(&state
->stateid
, &state
->open_stateid
);
2481 write_sequnlock(&state
->seqlock
);
2482 clear_bit(NFS_DELEGATED_STATE
, &state
->flags
);
2485 static void nfs40_clear_delegation_stateid(struct nfs4_state
*state
)
2487 if (rcu_access_pointer(NFS_I(state
->inode
)->delegation
) != NULL
)
2488 nfs_finish_clear_delegation_stateid(state
, NULL
);
2491 static int nfs40_open_expired(struct nfs4_state_owner
*sp
, struct nfs4_state
*state
)
2493 /* NFSv4.0 doesn't allow for delegation recovery on open expire */
2494 nfs40_clear_delegation_stateid(state
);
2495 return nfs4_open_expired(sp
, state
);
2498 static int nfs40_test_and_free_expired_stateid(struct nfs_server
*server
,
2499 nfs4_stateid
*stateid
,
2500 struct rpc_cred
*cred
)
2502 return -NFS4ERR_BAD_STATEID
;
2505 #if defined(CONFIG_NFS_V4_1)
2506 static int nfs41_test_and_free_expired_stateid(struct nfs_server
*server
,
2507 nfs4_stateid
*stateid
,
2508 struct rpc_cred
*cred
)
2512 switch (stateid
->type
) {
2515 case NFS4_INVALID_STATEID_TYPE
:
2516 case NFS4_SPECIAL_STATEID_TYPE
:
2517 return -NFS4ERR_BAD_STATEID
;
2518 case NFS4_REVOKED_STATEID_TYPE
:
2522 status
= nfs41_test_stateid(server
, stateid
, cred
);
2524 case -NFS4ERR_EXPIRED
:
2525 case -NFS4ERR_ADMIN_REVOKED
:
2526 case -NFS4ERR_DELEG_REVOKED
:
2532 /* Ack the revoked state to the server */
2533 nfs41_free_stateid(server
, stateid
, cred
, true);
2534 return -NFS4ERR_EXPIRED
;
2537 static void nfs41_check_delegation_stateid(struct nfs4_state
*state
)
2539 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
2540 nfs4_stateid stateid
;
2541 struct nfs_delegation
*delegation
;
2542 struct rpc_cred
*cred
;
2545 /* Get the delegation credential for use by test/free_stateid */
2547 delegation
= rcu_dereference(NFS_I(state
->inode
)->delegation
);
2548 if (delegation
== NULL
) {
2553 nfs4_stateid_copy(&stateid
, &delegation
->stateid
);
2554 if (test_bit(NFS_DELEGATION_REVOKED
, &delegation
->flags
)) {
2556 nfs_finish_clear_delegation_stateid(state
, &stateid
);
2560 if (!test_and_clear_bit(NFS_DELEGATION_TEST_EXPIRED
, &delegation
->flags
)) {
2565 cred
= get_rpccred(delegation
->cred
);
2567 status
= nfs41_test_and_free_expired_stateid(server
, &stateid
, cred
);
2568 trace_nfs4_test_delegation_stateid(state
, NULL
, status
);
2569 if (status
== -NFS4ERR_EXPIRED
|| status
== -NFS4ERR_BAD_STATEID
)
2570 nfs_finish_clear_delegation_stateid(state
, &stateid
);
2576 * nfs41_check_expired_locks - possibly free a lock stateid
2578 * @state: NFSv4 state for an inode
2580 * Returns NFS_OK if recovery for this stateid is now finished.
2581 * Otherwise a negative NFS4ERR value is returned.
2583 static int nfs41_check_expired_locks(struct nfs4_state
*state
)
2585 int status
, ret
= NFS_OK
;
2586 struct nfs4_lock_state
*lsp
, *prev
= NULL
;
2587 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
2589 if (!test_bit(LK_STATE_IN_USE
, &state
->flags
))
2592 spin_lock(&state
->state_lock
);
2593 list_for_each_entry(lsp
, &state
->lock_states
, ls_locks
) {
2594 if (test_bit(NFS_LOCK_INITIALIZED
, &lsp
->ls_flags
)) {
2595 struct rpc_cred
*cred
= lsp
->ls_state
->owner
->so_cred
;
2597 atomic_inc(&lsp
->ls_count
);
2598 spin_unlock(&state
->state_lock
);
2600 nfs4_put_lock_state(prev
);
2603 status
= nfs41_test_and_free_expired_stateid(server
,
2606 trace_nfs4_test_lock_stateid(state
, lsp
, status
);
2607 if (status
== -NFS4ERR_EXPIRED
||
2608 status
== -NFS4ERR_BAD_STATEID
) {
2609 clear_bit(NFS_LOCK_INITIALIZED
, &lsp
->ls_flags
);
2610 lsp
->ls_stateid
.type
= NFS4_INVALID_STATEID_TYPE
;
2611 if (!recover_lost_locks
)
2612 set_bit(NFS_LOCK_LOST
, &lsp
->ls_flags
);
2613 } else if (status
!= NFS_OK
) {
2615 nfs4_put_lock_state(prev
);
2618 spin_lock(&state
->state_lock
);
2621 spin_unlock(&state
->state_lock
);
2622 nfs4_put_lock_state(prev
);
2628 * nfs41_check_open_stateid - possibly free an open stateid
2630 * @state: NFSv4 state for an inode
2632 * Returns NFS_OK if recovery for this stateid is now finished.
2633 * Otherwise a negative NFS4ERR value is returned.
2635 static int nfs41_check_open_stateid(struct nfs4_state
*state
)
2637 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
2638 nfs4_stateid
*stateid
= &state
->open_stateid
;
2639 struct rpc_cred
*cred
= state
->owner
->so_cred
;
2642 if (test_bit(NFS_OPEN_STATE
, &state
->flags
) == 0) {
2643 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) == 0) {
2644 if (nfs4_have_delegation(state
->inode
, state
->state
))
2646 return -NFS4ERR_OPENMODE
;
2648 return -NFS4ERR_BAD_STATEID
;
2650 status
= nfs41_test_and_free_expired_stateid(server
, stateid
, cred
);
2651 trace_nfs4_test_open_stateid(state
, NULL
, status
);
2652 if (status
== -NFS4ERR_EXPIRED
|| status
== -NFS4ERR_BAD_STATEID
) {
2653 clear_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
2654 clear_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
2655 clear_bit(NFS_O_RDWR_STATE
, &state
->flags
);
2656 clear_bit(NFS_OPEN_STATE
, &state
->flags
);
2657 stateid
->type
= NFS4_INVALID_STATEID_TYPE
;
2659 if (status
!= NFS_OK
)
2661 if (nfs_open_stateid_recover_openmode(state
))
2662 return -NFS4ERR_OPENMODE
;
2666 static int nfs41_open_expired(struct nfs4_state_owner
*sp
, struct nfs4_state
*state
)
2670 nfs41_check_delegation_stateid(state
);
2671 status
= nfs41_check_expired_locks(state
);
2672 if (status
!= NFS_OK
)
2674 status
= nfs41_check_open_stateid(state
);
2675 if (status
!= NFS_OK
)
2676 status
= nfs4_open_expired(sp
, state
);
2682 * on an EXCLUSIVE create, the server should send back a bitmask with FATTR4-*
2683 * fields corresponding to attributes that were used to store the verifier.
2684 * Make sure we clobber those fields in the later setattr call
2686 static inline void nfs4_exclusive_attrset(struct nfs4_opendata
*opendata
,
2687 struct iattr
*sattr
, struct nfs4_label
**label
)
2689 const u32
*attrset
= opendata
->o_res
.attrset
;
2691 if ((attrset
[1] & FATTR4_WORD1_TIME_ACCESS
) &&
2692 !(sattr
->ia_valid
& ATTR_ATIME_SET
))
2693 sattr
->ia_valid
|= ATTR_ATIME
;
2695 if ((attrset
[1] & FATTR4_WORD1_TIME_MODIFY
) &&
2696 !(sattr
->ia_valid
& ATTR_MTIME_SET
))
2697 sattr
->ia_valid
|= ATTR_MTIME
;
2699 /* Except MODE, it seems harmless of setting twice. */
2700 if ((attrset
[1] & FATTR4_WORD1_MODE
))
2701 sattr
->ia_valid
&= ~ATTR_MODE
;
2703 if (attrset
[2] & FATTR4_WORD2_SECURITY_LABEL
)
2707 static int _nfs4_open_and_get_state(struct nfs4_opendata
*opendata
,
2710 struct nfs_open_context
*ctx
)
2712 struct nfs4_state_owner
*sp
= opendata
->owner
;
2713 struct nfs_server
*server
= sp
->so_server
;
2714 struct dentry
*dentry
;
2715 struct nfs4_state
*state
;
2719 seq
= raw_seqcount_begin(&sp
->so_reclaim_seqcount
);
2721 ret
= _nfs4_proc_open(opendata
);
2725 state
= nfs4_opendata_to_nfs4_state(opendata
);
2726 ret
= PTR_ERR(state
);
2729 if (server
->caps
& NFS_CAP_POSIX_LOCK
)
2730 set_bit(NFS_STATE_POSIX_LOCKS
, &state
->flags
);
2731 if (opendata
->o_res
.rflags
& NFS4_OPEN_RESULT_MAY_NOTIFY_LOCK
)
2732 set_bit(NFS_STATE_MAY_NOTIFY_LOCK
, &state
->flags
);
2734 dentry
= opendata
->dentry
;
2735 if (d_really_is_negative(dentry
)) {
2736 struct dentry
*alias
;
2738 alias
= d_exact_alias(dentry
, state
->inode
);
2740 alias
= d_splice_alias(igrab(state
->inode
), dentry
);
2741 /* d_splice_alias() can't fail here - it's a non-directory */
2744 ctx
->dentry
= dentry
= alias
;
2746 nfs_set_verifier(dentry
,
2747 nfs_save_change_attribute(d_inode(opendata
->dir
)));
2750 ret
= nfs4_opendata_access(sp
->so_cred
, opendata
, state
, fmode
, flags
);
2755 if (d_inode(dentry
) == state
->inode
) {
2756 nfs_inode_attach_open_context(ctx
);
2757 if (read_seqcount_retry(&sp
->so_reclaim_seqcount
, seq
))
2758 nfs4_schedule_stateid_recovery(server
, state
);
2765 * Returns a referenced nfs4_state
2767 static int _nfs4_do_open(struct inode
*dir
,
2768 struct nfs_open_context
*ctx
,
2770 struct iattr
*sattr
,
2771 struct nfs4_label
*label
,
2774 struct nfs4_state_owner
*sp
;
2775 struct nfs4_state
*state
= NULL
;
2776 struct nfs_server
*server
= NFS_SERVER(dir
);
2777 struct nfs4_opendata
*opendata
;
2778 struct dentry
*dentry
= ctx
->dentry
;
2779 struct rpc_cred
*cred
= ctx
->cred
;
2780 struct nfs4_threshold
**ctx_th
= &ctx
->mdsthreshold
;
2781 fmode_t fmode
= ctx
->mode
& (FMODE_READ
|FMODE_WRITE
|FMODE_EXEC
);
2782 enum open_claim_type4 claim
= NFS4_OPEN_CLAIM_NULL
;
2783 struct nfs4_label
*olabel
= NULL
;
2786 /* Protect against reboot recovery conflicts */
2788 sp
= nfs4_get_state_owner(server
, cred
, GFP_KERNEL
);
2790 dprintk("nfs4_do_open: nfs4_get_state_owner failed!\n");
2793 status
= nfs4_recover_expired_lease(server
);
2795 goto err_put_state_owner
;
2796 if (d_really_is_positive(dentry
))
2797 nfs4_return_incompatible_delegation(d_inode(dentry
), fmode
);
2799 if (d_really_is_positive(dentry
))
2800 claim
= NFS4_OPEN_CLAIM_FH
;
2801 opendata
= nfs4_opendata_alloc(dentry
, sp
, fmode
, flags
, sattr
,
2802 label
, claim
, GFP_KERNEL
);
2803 if (opendata
== NULL
)
2804 goto err_put_state_owner
;
2807 olabel
= nfs4_label_alloc(server
, GFP_KERNEL
);
2808 if (IS_ERR(olabel
)) {
2809 status
= PTR_ERR(olabel
);
2810 goto err_opendata_put
;
2814 if (server
->attr_bitmask
[2] & FATTR4_WORD2_MDSTHRESHOLD
) {
2815 if (!opendata
->f_attr
.mdsthreshold
) {
2816 opendata
->f_attr
.mdsthreshold
= pnfs_mdsthreshold_alloc();
2817 if (!opendata
->f_attr
.mdsthreshold
)
2818 goto err_free_label
;
2820 opendata
->o_arg
.open_bitmap
= &nfs4_pnfs_open_bitmap
[0];
2822 if (d_really_is_positive(dentry
))
2823 opendata
->state
= nfs4_get_open_state(d_inode(dentry
), sp
);
2825 status
= _nfs4_open_and_get_state(opendata
, fmode
, flags
, ctx
);
2827 goto err_free_label
;
2830 if ((opendata
->o_arg
.open_flags
& (O_CREAT
|O_EXCL
)) == (O_CREAT
|O_EXCL
) &&
2831 (opendata
->o_arg
.createmode
!= NFS4_CREATE_GUARDED
)) {
2832 nfs4_exclusive_attrset(opendata
, sattr
, &label
);
2834 * send create attributes which was not set by open
2835 * with an extra setattr.
2837 if (sattr
->ia_valid
& NFS4_VALID_ATTRS
) {
2838 nfs_fattr_init(opendata
->o_res
.f_attr
);
2839 status
= nfs4_do_setattr(state
->inode
, cred
,
2840 opendata
->o_res
.f_attr
, sattr
,
2841 ctx
, label
, olabel
);
2843 nfs_setattr_update_inode(state
->inode
, sattr
,
2844 opendata
->o_res
.f_attr
);
2845 nfs_setsecurity(state
->inode
, opendata
->o_res
.f_attr
, olabel
);
2849 if (opened
&& opendata
->file_created
)
2850 *opened
|= FILE_CREATED
;
2852 if (pnfs_use_threshold(ctx_th
, opendata
->f_attr
.mdsthreshold
, server
)) {
2853 *ctx_th
= opendata
->f_attr
.mdsthreshold
;
2854 opendata
->f_attr
.mdsthreshold
= NULL
;
2857 nfs4_label_free(olabel
);
2859 nfs4_opendata_put(opendata
);
2860 nfs4_put_state_owner(sp
);
2863 nfs4_label_free(olabel
);
2865 nfs4_opendata_put(opendata
);
2866 err_put_state_owner
:
2867 nfs4_put_state_owner(sp
);
2873 static struct nfs4_state
*nfs4_do_open(struct inode
*dir
,
2874 struct nfs_open_context
*ctx
,
2876 struct iattr
*sattr
,
2877 struct nfs4_label
*label
,
2880 struct nfs_server
*server
= NFS_SERVER(dir
);
2881 struct nfs4_exception exception
= { };
2882 struct nfs4_state
*res
;
2886 status
= _nfs4_do_open(dir
, ctx
, flags
, sattr
, label
, opened
);
2888 trace_nfs4_open_file(ctx
, flags
, status
);
2891 /* NOTE: BAD_SEQID means the server and client disagree about the
2892 * book-keeping w.r.t. state-changing operations
2893 * (OPEN/CLOSE/LOCK/LOCKU...)
2894 * It is actually a sign of a bug on the client or on the server.
2896 * If we receive a BAD_SEQID error in the particular case of
2897 * doing an OPEN, we assume that nfs_increment_open_seqid() will
2898 * have unhashed the old state_owner for us, and that we can
2899 * therefore safely retry using a new one. We should still warn
2900 * the user though...
2902 if (status
== -NFS4ERR_BAD_SEQID
) {
2903 pr_warn_ratelimited("NFS: v4 server %s "
2904 " returned a bad sequence-id error!\n",
2905 NFS_SERVER(dir
)->nfs_client
->cl_hostname
);
2906 exception
.retry
= 1;
2910 * BAD_STATEID on OPEN means that the server cancelled our
2911 * state before it received the OPEN_CONFIRM.
2912 * Recover by retrying the request as per the discussion
2913 * on Page 181 of RFC3530.
2915 if (status
== -NFS4ERR_BAD_STATEID
) {
2916 exception
.retry
= 1;
2919 if (status
== -EAGAIN
) {
2920 /* We must have found a delegation */
2921 exception
.retry
= 1;
2924 if (nfs4_clear_cap_atomic_open_v1(server
, status
, &exception
))
2926 res
= ERR_PTR(nfs4_handle_exception(server
,
2927 status
, &exception
));
2928 } while (exception
.retry
);
2932 static int _nfs4_do_setattr(struct inode
*inode
,
2933 struct nfs_setattrargs
*arg
,
2934 struct nfs_setattrres
*res
,
2935 struct rpc_cred
*cred
,
2936 struct nfs_open_context
*ctx
)
2938 struct nfs_server
*server
= NFS_SERVER(inode
);
2939 struct rpc_message msg
= {
2940 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETATTR
],
2945 struct rpc_cred
*delegation_cred
= NULL
;
2946 unsigned long timestamp
= jiffies
;
2951 nfs_fattr_init(res
->fattr
);
2953 /* Servers should only apply open mode checks for file size changes */
2954 truncate
= (arg
->iap
->ia_valid
& ATTR_SIZE
) ? true : false;
2955 fmode
= truncate
? FMODE_WRITE
: FMODE_READ
;
2957 if (nfs4_copy_delegation_stateid(inode
, fmode
, &arg
->stateid
, &delegation_cred
)) {
2958 /* Use that stateid */
2959 } else if (truncate
&& ctx
!= NULL
) {
2960 struct nfs_lock_context
*l_ctx
;
2961 if (!nfs4_valid_open_stateid(ctx
->state
))
2963 l_ctx
= nfs_get_lock_context(ctx
);
2965 return PTR_ERR(l_ctx
);
2966 status
= nfs4_select_rw_stateid(ctx
->state
, FMODE_WRITE
, l_ctx
,
2967 &arg
->stateid
, &delegation_cred
);
2968 nfs_put_lock_context(l_ctx
);
2972 nfs4_stateid_copy(&arg
->stateid
, &zero_stateid
);
2973 if (delegation_cred
)
2974 msg
.rpc_cred
= delegation_cred
;
2976 status
= nfs4_call_sync(server
->client
, server
, &msg
, &arg
->seq_args
, &res
->seq_res
, 1);
2978 put_rpccred(delegation_cred
);
2979 if (status
== 0 && ctx
!= NULL
)
2980 renew_lease(server
, timestamp
);
2981 trace_nfs4_setattr(inode
, &arg
->stateid
, status
);
2985 static int nfs4_do_setattr(struct inode
*inode
, struct rpc_cred
*cred
,
2986 struct nfs_fattr
*fattr
, struct iattr
*sattr
,
2987 struct nfs_open_context
*ctx
, struct nfs4_label
*ilabel
,
2988 struct nfs4_label
*olabel
)
2990 struct nfs_server
*server
= NFS_SERVER(inode
);
2991 struct nfs4_state
*state
= ctx
? ctx
->state
: NULL
;
2992 struct nfs_setattrargs arg
= {
2993 .fh
= NFS_FH(inode
),
2996 .bitmask
= server
->attr_bitmask
,
2999 struct nfs_setattrres res
= {
3004 struct nfs4_exception exception
= {
3007 .stateid
= &arg
.stateid
,
3011 arg
.bitmask
= nfs4_bitmask(server
, ilabel
);
3013 arg
.bitmask
= nfs4_bitmask(server
, olabel
);
3016 err
= _nfs4_do_setattr(inode
, &arg
, &res
, cred
, ctx
);
3018 case -NFS4ERR_OPENMODE
:
3019 if (!(sattr
->ia_valid
& ATTR_SIZE
)) {
3020 pr_warn_once("NFSv4: server %s is incorrectly "
3021 "applying open mode checks to "
3022 "a SETATTR that is not "
3023 "changing file size.\n",
3024 server
->nfs_client
->cl_hostname
);
3026 if (state
&& !(state
->state
& FMODE_WRITE
)) {
3028 if (sattr
->ia_valid
& ATTR_OPEN
)
3033 err
= nfs4_handle_exception(server
, err
, &exception
);
3034 } while (exception
.retry
);
3040 nfs4_wait_on_layoutreturn(struct inode
*inode
, struct rpc_task
*task
)
3042 if (inode
== NULL
|| !nfs_have_layout(inode
))
3045 return pnfs_wait_on_layoutreturn(inode
, task
);
3048 struct nfs4_closedata
{
3049 struct inode
*inode
;
3050 struct nfs4_state
*state
;
3051 struct nfs_closeargs arg
;
3052 struct nfs_closeres res
;
3054 struct nfs4_layoutreturn_args arg
;
3055 struct nfs4_layoutreturn_res res
;
3056 struct nfs4_xdr_opaque_data ld_private
;
3060 struct nfs_fattr fattr
;
3061 unsigned long timestamp
;
3064 static void nfs4_free_closedata(void *data
)
3066 struct nfs4_closedata
*calldata
= data
;
3067 struct nfs4_state_owner
*sp
= calldata
->state
->owner
;
3068 struct super_block
*sb
= calldata
->state
->inode
->i_sb
;
3070 if (calldata
->lr
.roc
)
3071 pnfs_roc_release(&calldata
->lr
.arg
, &calldata
->lr
.res
,
3072 calldata
->res
.lr_ret
);
3073 nfs4_put_open_state(calldata
->state
);
3074 nfs_free_seqid(calldata
->arg
.seqid
);
3075 nfs4_put_state_owner(sp
);
3076 nfs_sb_deactive(sb
);
3080 static void nfs4_close_done(struct rpc_task
*task
, void *data
)
3082 struct nfs4_closedata
*calldata
= data
;
3083 struct nfs4_state
*state
= calldata
->state
;
3084 struct nfs_server
*server
= NFS_SERVER(calldata
->inode
);
3085 nfs4_stateid
*res_stateid
= NULL
;
3087 dprintk("%s: begin!\n", __func__
);
3088 if (!nfs4_sequence_done(task
, &calldata
->res
.seq_res
))
3090 trace_nfs4_close(state
, &calldata
->arg
, &calldata
->res
, task
->tk_status
);
3092 /* Handle Layoutreturn errors */
3093 if (calldata
->arg
.lr_args
&& task
->tk_status
!= 0) {
3094 switch (calldata
->res
.lr_ret
) {
3096 calldata
->res
.lr_ret
= -NFS4ERR_NOMATCHING_LAYOUT
;
3099 calldata
->arg
.lr_args
= NULL
;
3100 calldata
->res
.lr_res
= NULL
;
3102 case -NFS4ERR_ADMIN_REVOKED
:
3103 case -NFS4ERR_DELEG_REVOKED
:
3104 case -NFS4ERR_EXPIRED
:
3105 case -NFS4ERR_BAD_STATEID
:
3106 case -NFS4ERR_OLD_STATEID
:
3107 case -NFS4ERR_UNKNOWN_LAYOUTTYPE
:
3108 case -NFS4ERR_WRONG_CRED
:
3109 calldata
->arg
.lr_args
= NULL
;
3110 calldata
->res
.lr_res
= NULL
;
3111 calldata
->res
.lr_ret
= 0;
3112 rpc_restart_call_prepare(task
);
3117 /* hmm. we are done with the inode, and in the process of freeing
3118 * the state_owner. we keep this around to process errors
3120 switch (task
->tk_status
) {
3122 res_stateid
= &calldata
->res
.stateid
;
3123 renew_lease(server
, calldata
->timestamp
);
3125 case -NFS4ERR_ADMIN_REVOKED
:
3126 case -NFS4ERR_STALE_STATEID
:
3127 case -NFS4ERR_EXPIRED
:
3128 nfs4_free_revoked_stateid(server
,
3129 &calldata
->arg
.stateid
,
3130 task
->tk_msg
.rpc_cred
);
3131 case -NFS4ERR_OLD_STATEID
:
3132 case -NFS4ERR_BAD_STATEID
:
3133 if (!nfs4_stateid_match(&calldata
->arg
.stateid
,
3134 &state
->open_stateid
)) {
3135 rpc_restart_call_prepare(task
);
3138 if (calldata
->arg
.fmode
== 0)
3141 if (nfs4_async_handle_error(task
, server
, state
, NULL
) == -EAGAIN
) {
3142 rpc_restart_call_prepare(task
);
3146 nfs_clear_open_stateid(state
, &calldata
->arg
.stateid
,
3147 res_stateid
, calldata
->arg
.fmode
);
3149 nfs_release_seqid(calldata
->arg
.seqid
);
3150 nfs_refresh_inode(calldata
->inode
, &calldata
->fattr
);
3151 dprintk("%s: done, ret = %d!\n", __func__
, task
->tk_status
);
3154 static void nfs4_close_prepare(struct rpc_task
*task
, void *data
)
3156 struct nfs4_closedata
*calldata
= data
;
3157 struct nfs4_state
*state
= calldata
->state
;
3158 struct inode
*inode
= calldata
->inode
;
3159 bool is_rdonly
, is_wronly
, is_rdwr
;
3162 dprintk("%s: begin!\n", __func__
);
3163 if (nfs_wait_on_sequence(calldata
->arg
.seqid
, task
) != 0)
3166 task
->tk_msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_OPEN_DOWNGRADE
];
3167 spin_lock(&state
->owner
->so_lock
);
3168 is_rdwr
= test_bit(NFS_O_RDWR_STATE
, &state
->flags
);
3169 is_rdonly
= test_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
3170 is_wronly
= test_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
3171 nfs4_stateid_copy(&calldata
->arg
.stateid
, &state
->open_stateid
);
3172 /* Calculate the change in open mode */
3173 calldata
->arg
.fmode
= 0;
3174 if (state
->n_rdwr
== 0) {
3175 if (state
->n_rdonly
== 0)
3176 call_close
|= is_rdonly
;
3178 calldata
->arg
.fmode
|= FMODE_READ
;
3179 if (state
->n_wronly
== 0)
3180 call_close
|= is_wronly
;
3182 calldata
->arg
.fmode
|= FMODE_WRITE
;
3183 if (calldata
->arg
.fmode
!= (FMODE_READ
|FMODE_WRITE
))
3184 call_close
|= is_rdwr
;
3186 calldata
->arg
.fmode
|= FMODE_READ
|FMODE_WRITE
;
3188 if (!nfs4_valid_open_stateid(state
) ||
3189 test_bit(NFS_OPEN_STATE
, &state
->flags
) == 0)
3191 spin_unlock(&state
->owner
->so_lock
);
3194 /* Note: exit _without_ calling nfs4_close_done */
3198 if (!calldata
->lr
.roc
&& nfs4_wait_on_layoutreturn(inode
, task
)) {
3199 nfs_release_seqid(calldata
->arg
.seqid
);
3203 if (calldata
->arg
.fmode
== 0)
3204 task
->tk_msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_CLOSE
];
3206 if (calldata
->arg
.fmode
== 0 || calldata
->arg
.fmode
== FMODE_READ
) {
3207 /* Close-to-open cache consistency revalidation */
3208 if (!nfs4_have_delegation(inode
, FMODE_READ
))
3209 calldata
->arg
.bitmask
= NFS_SERVER(inode
)->cache_consistency_bitmask
;
3211 calldata
->arg
.bitmask
= NULL
;
3214 calldata
->arg
.share_access
=
3215 nfs4_map_atomic_open_share(NFS_SERVER(inode
),
3216 calldata
->arg
.fmode
, 0);
3218 if (calldata
->res
.fattr
== NULL
)
3219 calldata
->arg
.bitmask
= NULL
;
3220 else if (calldata
->arg
.bitmask
== NULL
)
3221 calldata
->res
.fattr
= NULL
;
3222 calldata
->timestamp
= jiffies
;
3223 if (nfs4_setup_sequence(NFS_SERVER(inode
),
3224 &calldata
->arg
.seq_args
,
3225 &calldata
->res
.seq_res
,
3227 nfs_release_seqid(calldata
->arg
.seqid
);
3228 dprintk("%s: done!\n", __func__
);
3231 task
->tk_action
= NULL
;
3233 nfs4_sequence_done(task
, &calldata
->res
.seq_res
);
3236 static const struct rpc_call_ops nfs4_close_ops
= {
3237 .rpc_call_prepare
= nfs4_close_prepare
,
3238 .rpc_call_done
= nfs4_close_done
,
3239 .rpc_release
= nfs4_free_closedata
,
3243 * It is possible for data to be read/written from a mem-mapped file
3244 * after the sys_close call (which hits the vfs layer as a flush).
3245 * This means that we can't safely call nfsv4 close on a file until
3246 * the inode is cleared. This in turn means that we are not good
3247 * NFSv4 citizens - we do not indicate to the server to update the file's
3248 * share state even when we are done with one of the three share
3249 * stateid's in the inode.
3251 * NOTE: Caller must be holding the sp->so_owner semaphore!
3253 int nfs4_do_close(struct nfs4_state
*state
, gfp_t gfp_mask
, int wait
)
3255 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
3256 struct nfs_seqid
*(*alloc_seqid
)(struct nfs_seqid_counter
*, gfp_t
);
3257 struct nfs4_closedata
*calldata
;
3258 struct nfs4_state_owner
*sp
= state
->owner
;
3259 struct rpc_task
*task
;
3260 struct rpc_message msg
= {
3261 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_CLOSE
],
3262 .rpc_cred
= state
->owner
->so_cred
,
3264 struct rpc_task_setup task_setup_data
= {
3265 .rpc_client
= server
->client
,
3266 .rpc_message
= &msg
,
3267 .callback_ops
= &nfs4_close_ops
,
3268 .workqueue
= nfsiod_workqueue
,
3269 .flags
= RPC_TASK_ASYNC
,
3271 int status
= -ENOMEM
;
3273 nfs4_state_protect(server
->nfs_client
, NFS_SP4_MACH_CRED_CLEANUP
,
3274 &task_setup_data
.rpc_client
, &msg
);
3276 calldata
= kzalloc(sizeof(*calldata
), gfp_mask
);
3277 if (calldata
== NULL
)
3279 nfs4_init_sequence(&calldata
->arg
.seq_args
, &calldata
->res
.seq_res
, 1);
3280 calldata
->inode
= state
->inode
;
3281 calldata
->state
= state
;
3282 calldata
->arg
.fh
= NFS_FH(state
->inode
);
3283 /* Serialization for the sequence id */
3284 alloc_seqid
= server
->nfs_client
->cl_mvops
->alloc_seqid
;
3285 calldata
->arg
.seqid
= alloc_seqid(&state
->owner
->so_seqid
, gfp_mask
);
3286 if (IS_ERR(calldata
->arg
.seqid
))
3287 goto out_free_calldata
;
3288 nfs_fattr_init(&calldata
->fattr
);
3289 calldata
->arg
.fmode
= 0;
3290 calldata
->lr
.arg
.ld_private
= &calldata
->lr
.ld_private
;
3291 calldata
->res
.fattr
= &calldata
->fattr
;
3292 calldata
->res
.seqid
= calldata
->arg
.seqid
;
3293 calldata
->res
.server
= server
;
3294 calldata
->res
.lr_ret
= -NFS4ERR_NOMATCHING_LAYOUT
;
3295 calldata
->lr
.roc
= pnfs_roc(state
->inode
,
3296 &calldata
->lr
.arg
, &calldata
->lr
.res
, msg
.rpc_cred
);
3297 if (calldata
->lr
.roc
) {
3298 calldata
->arg
.lr_args
= &calldata
->lr
.arg
;
3299 calldata
->res
.lr_res
= &calldata
->lr
.res
;
3301 nfs_sb_active(calldata
->inode
->i_sb
);
3303 msg
.rpc_argp
= &calldata
->arg
;
3304 msg
.rpc_resp
= &calldata
->res
;
3305 task_setup_data
.callback_data
= calldata
;
3306 task
= rpc_run_task(&task_setup_data
);
3308 return PTR_ERR(task
);
3311 status
= rpc_wait_for_completion_task(task
);
3317 nfs4_put_open_state(state
);
3318 nfs4_put_state_owner(sp
);
3322 static struct inode
*
3323 nfs4_atomic_open(struct inode
*dir
, struct nfs_open_context
*ctx
,
3324 int open_flags
, struct iattr
*attr
, int *opened
)
3326 struct nfs4_state
*state
;
3327 struct nfs4_label l
= {0, 0, 0, NULL
}, *label
= NULL
;
3329 label
= nfs4_label_init_security(dir
, ctx
->dentry
, attr
, &l
);
3331 /* Protect against concurrent sillydeletes */
3332 state
= nfs4_do_open(dir
, ctx
, open_flags
, attr
, label
, opened
);
3334 nfs4_label_release_security(label
);
3337 return ERR_CAST(state
);
3338 return state
->inode
;
3341 static void nfs4_close_context(struct nfs_open_context
*ctx
, int is_sync
)
3343 if (ctx
->state
== NULL
)
3346 nfs4_close_sync(ctx
->state
, ctx
->mode
);
3348 nfs4_close_state(ctx
->state
, ctx
->mode
);
3351 #define FATTR4_WORD1_NFS40_MASK (2*FATTR4_WORD1_MOUNTED_ON_FILEID - 1UL)
3352 #define FATTR4_WORD2_NFS41_MASK (2*FATTR4_WORD2_SUPPATTR_EXCLCREAT - 1UL)
3353 #define FATTR4_WORD2_NFS42_MASK (2*FATTR4_WORD2_MODE_UMASK - 1UL)
3355 static int _nfs4_server_capabilities(struct nfs_server
*server
, struct nfs_fh
*fhandle
)
3357 u32 bitmask
[3] = {}, minorversion
= server
->nfs_client
->cl_minorversion
;
3358 struct nfs4_server_caps_arg args
= {
3362 struct nfs4_server_caps_res res
= {};
3363 struct rpc_message msg
= {
3364 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SERVER_CAPS
],
3370 bitmask
[0] = FATTR4_WORD0_SUPPORTED_ATTRS
|
3371 FATTR4_WORD0_FH_EXPIRE_TYPE
|
3372 FATTR4_WORD0_LINK_SUPPORT
|
3373 FATTR4_WORD0_SYMLINK_SUPPORT
|
3374 FATTR4_WORD0_ACLSUPPORT
;
3376 bitmask
[2] = FATTR4_WORD2_SUPPATTR_EXCLCREAT
;
3378 status
= nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
3380 /* Sanity check the server answers */
3381 switch (minorversion
) {
3383 res
.attr_bitmask
[1] &= FATTR4_WORD1_NFS40_MASK
;
3384 res
.attr_bitmask
[2] = 0;
3387 res
.attr_bitmask
[2] &= FATTR4_WORD2_NFS41_MASK
;
3390 res
.attr_bitmask
[2] &= FATTR4_WORD2_NFS42_MASK
;
3392 memcpy(server
->attr_bitmask
, res
.attr_bitmask
, sizeof(server
->attr_bitmask
));
3393 server
->caps
&= ~(NFS_CAP_ACLS
|NFS_CAP_HARDLINKS
|
3394 NFS_CAP_SYMLINKS
|NFS_CAP_FILEID
|
3395 NFS_CAP_MODE
|NFS_CAP_NLINK
|NFS_CAP_OWNER
|
3396 NFS_CAP_OWNER_GROUP
|NFS_CAP_ATIME
|
3397 NFS_CAP_CTIME
|NFS_CAP_MTIME
|
3398 NFS_CAP_SECURITY_LABEL
);
3399 if (res
.attr_bitmask
[0] & FATTR4_WORD0_ACL
&&
3400 res
.acl_bitmask
& ACL4_SUPPORT_ALLOW_ACL
)
3401 server
->caps
|= NFS_CAP_ACLS
;
3402 if (res
.has_links
!= 0)
3403 server
->caps
|= NFS_CAP_HARDLINKS
;
3404 if (res
.has_symlinks
!= 0)
3405 server
->caps
|= NFS_CAP_SYMLINKS
;
3406 if (res
.attr_bitmask
[0] & FATTR4_WORD0_FILEID
)
3407 server
->caps
|= NFS_CAP_FILEID
;
3408 if (res
.attr_bitmask
[1] & FATTR4_WORD1_MODE
)
3409 server
->caps
|= NFS_CAP_MODE
;
3410 if (res
.attr_bitmask
[1] & FATTR4_WORD1_NUMLINKS
)
3411 server
->caps
|= NFS_CAP_NLINK
;
3412 if (res
.attr_bitmask
[1] & FATTR4_WORD1_OWNER
)
3413 server
->caps
|= NFS_CAP_OWNER
;
3414 if (res
.attr_bitmask
[1] & FATTR4_WORD1_OWNER_GROUP
)
3415 server
->caps
|= NFS_CAP_OWNER_GROUP
;
3416 if (res
.attr_bitmask
[1] & FATTR4_WORD1_TIME_ACCESS
)
3417 server
->caps
|= NFS_CAP_ATIME
;
3418 if (res
.attr_bitmask
[1] & FATTR4_WORD1_TIME_METADATA
)
3419 server
->caps
|= NFS_CAP_CTIME
;
3420 if (res
.attr_bitmask
[1] & FATTR4_WORD1_TIME_MODIFY
)
3421 server
->caps
|= NFS_CAP_MTIME
;
3422 #ifdef CONFIG_NFS_V4_SECURITY_LABEL
3423 if (res
.attr_bitmask
[2] & FATTR4_WORD2_SECURITY_LABEL
)
3424 server
->caps
|= NFS_CAP_SECURITY_LABEL
;
3426 memcpy(server
->attr_bitmask_nl
, res
.attr_bitmask
,
3427 sizeof(server
->attr_bitmask
));
3428 server
->attr_bitmask_nl
[2] &= ~FATTR4_WORD2_SECURITY_LABEL
;
3430 memcpy(server
->cache_consistency_bitmask
, res
.attr_bitmask
, sizeof(server
->cache_consistency_bitmask
));
3431 server
->cache_consistency_bitmask
[0] &= FATTR4_WORD0_CHANGE
|FATTR4_WORD0_SIZE
;
3432 server
->cache_consistency_bitmask
[1] &= FATTR4_WORD1_TIME_METADATA
|FATTR4_WORD1_TIME_MODIFY
;
3433 server
->cache_consistency_bitmask
[2] = 0;
3434 memcpy(server
->exclcreat_bitmask
, res
.exclcreat_bitmask
,
3435 sizeof(server
->exclcreat_bitmask
));
3436 server
->acl_bitmask
= res
.acl_bitmask
;
3437 server
->fh_expire_type
= res
.fh_expire_type
;
3443 int nfs4_server_capabilities(struct nfs_server
*server
, struct nfs_fh
*fhandle
)
3445 struct nfs4_exception exception
= { };
3448 err
= nfs4_handle_exception(server
,
3449 _nfs4_server_capabilities(server
, fhandle
),
3451 } while (exception
.retry
);
3455 static int _nfs4_lookup_root(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
3456 struct nfs_fsinfo
*info
)
3459 struct nfs4_lookup_root_arg args
= {
3462 struct nfs4_lookup_res res
= {
3464 .fattr
= info
->fattr
,
3467 struct rpc_message msg
= {
3468 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOOKUP_ROOT
],
3473 bitmask
[0] = nfs4_fattr_bitmap
[0];
3474 bitmask
[1] = nfs4_fattr_bitmap
[1];
3476 * Process the label in the upcoming getfattr
3478 bitmask
[2] = nfs4_fattr_bitmap
[2] & ~FATTR4_WORD2_SECURITY_LABEL
;
3480 nfs_fattr_init(info
->fattr
);
3481 return nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
3484 static int nfs4_lookup_root(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
3485 struct nfs_fsinfo
*info
)
3487 struct nfs4_exception exception
= { };
3490 err
= _nfs4_lookup_root(server
, fhandle
, info
);
3491 trace_nfs4_lookup_root(server
, fhandle
, info
->fattr
, err
);
3494 case -NFS4ERR_WRONGSEC
:
3497 err
= nfs4_handle_exception(server
, err
, &exception
);
3499 } while (exception
.retry
);
3504 static int nfs4_lookup_root_sec(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
3505 struct nfs_fsinfo
*info
, rpc_authflavor_t flavor
)
3507 struct rpc_auth_create_args auth_args
= {
3508 .pseudoflavor
= flavor
,
3510 struct rpc_auth
*auth
;
3513 auth
= rpcauth_create(&auth_args
, server
->client
);
3518 ret
= nfs4_lookup_root(server
, fhandle
, info
);
3524 * Retry pseudoroot lookup with various security flavors. We do this when:
3526 * NFSv4.0: the PUTROOTFH operation returns NFS4ERR_WRONGSEC
3527 * NFSv4.1: the server does not support the SECINFO_NO_NAME operation
3529 * Returns zero on success, or a negative NFS4ERR value, or a
3530 * negative errno value.
3532 static int nfs4_find_root_sec(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
3533 struct nfs_fsinfo
*info
)
3535 /* Per 3530bis 15.33.5 */
3536 static const rpc_authflavor_t flav_array
[] = {
3540 RPC_AUTH_UNIX
, /* courtesy */
3543 int status
= -EPERM
;
3546 if (server
->auth_info
.flavor_len
> 0) {
3547 /* try each flavor specified by user */
3548 for (i
= 0; i
< server
->auth_info
.flavor_len
; i
++) {
3549 status
= nfs4_lookup_root_sec(server
, fhandle
, info
,
3550 server
->auth_info
.flavors
[i
]);
3551 if (status
== -NFS4ERR_WRONGSEC
|| status
== -EACCES
)
3556 /* no flavors specified by user, try default list */
3557 for (i
= 0; i
< ARRAY_SIZE(flav_array
); i
++) {
3558 status
= nfs4_lookup_root_sec(server
, fhandle
, info
,
3560 if (status
== -NFS4ERR_WRONGSEC
|| status
== -EACCES
)
3567 * -EACCESS could mean that the user doesn't have correct permissions
3568 * to access the mount. It could also mean that we tried to mount
3569 * with a gss auth flavor, but rpc.gssd isn't running. Either way,
3570 * existing mount programs don't handle -EACCES very well so it should
3571 * be mapped to -EPERM instead.
3573 if (status
== -EACCES
)
3579 * nfs4_proc_get_rootfh - get file handle for server's pseudoroot
3580 * @server: initialized nfs_server handle
3581 * @fhandle: we fill in the pseudo-fs root file handle
3582 * @info: we fill in an FSINFO struct
3583 * @auth_probe: probe the auth flavours
3585 * Returns zero on success, or a negative errno.
3587 int nfs4_proc_get_rootfh(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
3588 struct nfs_fsinfo
*info
,
3594 status
= nfs4_lookup_root(server
, fhandle
, info
);
3596 if (auth_probe
|| status
== NFS4ERR_WRONGSEC
)
3597 status
= server
->nfs_client
->cl_mvops
->find_root_sec(server
,
3601 status
= nfs4_server_capabilities(server
, fhandle
);
3603 status
= nfs4_do_fsinfo(server
, fhandle
, info
);
3605 return nfs4_map_errors(status
);
3608 static int nfs4_proc_get_root(struct nfs_server
*server
, struct nfs_fh
*mntfh
,
3609 struct nfs_fsinfo
*info
)
3612 struct nfs_fattr
*fattr
= info
->fattr
;
3613 struct nfs4_label
*label
= NULL
;
3615 error
= nfs4_server_capabilities(server
, mntfh
);
3617 dprintk("nfs4_get_root: getcaps error = %d\n", -error
);
3621 label
= nfs4_label_alloc(server
, GFP_KERNEL
);
3623 return PTR_ERR(label
);
3625 error
= nfs4_proc_getattr(server
, mntfh
, fattr
, label
);
3627 dprintk("nfs4_get_root: getattr error = %d\n", -error
);
3628 goto err_free_label
;
3631 if (fattr
->valid
& NFS_ATTR_FATTR_FSID
&&
3632 !nfs_fsid_equal(&server
->fsid
, &fattr
->fsid
))
3633 memcpy(&server
->fsid
, &fattr
->fsid
, sizeof(server
->fsid
));
3636 nfs4_label_free(label
);
3642 * Get locations and (maybe) other attributes of a referral.
3643 * Note that we'll actually follow the referral later when
3644 * we detect fsid mismatch in inode revalidation
3646 static int nfs4_get_referral(struct rpc_clnt
*client
, struct inode
*dir
,
3647 const struct qstr
*name
, struct nfs_fattr
*fattr
,
3648 struct nfs_fh
*fhandle
)
3650 int status
= -ENOMEM
;
3651 struct page
*page
= NULL
;
3652 struct nfs4_fs_locations
*locations
= NULL
;
3654 page
= alloc_page(GFP_KERNEL
);
3657 locations
= kmalloc(sizeof(struct nfs4_fs_locations
), GFP_KERNEL
);
3658 if (locations
== NULL
)
3661 status
= nfs4_proc_fs_locations(client
, dir
, name
, locations
, page
);
3666 * If the fsid didn't change, this is a migration event, not a
3667 * referral. Cause us to drop into the exception handler, which
3668 * will kick off migration recovery.
3670 if (nfs_fsid_equal(&NFS_SERVER(dir
)->fsid
, &locations
->fattr
.fsid
)) {
3671 dprintk("%s: server did not return a different fsid for"
3672 " a referral at %s\n", __func__
, name
->name
);
3673 status
= -NFS4ERR_MOVED
;
3676 /* Fixup attributes for the nfs_lookup() call to nfs_fhget() */
3677 nfs_fixup_referral_attributes(&locations
->fattr
);
3679 /* replace the lookup nfs_fattr with the locations nfs_fattr */
3680 memcpy(fattr
, &locations
->fattr
, sizeof(struct nfs_fattr
));
3681 memset(fhandle
, 0, sizeof(struct nfs_fh
));
3689 static int _nfs4_proc_getattr(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
3690 struct nfs_fattr
*fattr
, struct nfs4_label
*label
)
3692 struct nfs4_getattr_arg args
= {
3694 .bitmask
= server
->attr_bitmask
,
3696 struct nfs4_getattr_res res
= {
3701 struct rpc_message msg
= {
3702 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GETATTR
],
3707 args
.bitmask
= nfs4_bitmask(server
, label
);
3709 nfs_fattr_init(fattr
);
3710 return nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
3713 static int nfs4_proc_getattr(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
3714 struct nfs_fattr
*fattr
, struct nfs4_label
*label
)
3716 struct nfs4_exception exception
= { };
3719 err
= _nfs4_proc_getattr(server
, fhandle
, fattr
, label
);
3720 trace_nfs4_getattr(server
, fhandle
, fattr
, err
);
3721 err
= nfs4_handle_exception(server
, err
,
3723 } while (exception
.retry
);
3728 * The file is not closed if it is opened due to the a request to change
3729 * the size of the file. The open call will not be needed once the
3730 * VFS layer lookup-intents are implemented.
3732 * Close is called when the inode is destroyed.
3733 * If we haven't opened the file for O_WRONLY, we
3734 * need to in the size_change case to obtain a stateid.
3737 * Because OPEN is always done by name in nfsv4, it is
3738 * possible that we opened a different file by the same
3739 * name. We can recognize this race condition, but we
3740 * can't do anything about it besides returning an error.
3742 * This will be fixed with VFS changes (lookup-intent).
3745 nfs4_proc_setattr(struct dentry
*dentry
, struct nfs_fattr
*fattr
,
3746 struct iattr
*sattr
)
3748 struct inode
*inode
= d_inode(dentry
);
3749 struct rpc_cred
*cred
= NULL
;
3750 struct nfs_open_context
*ctx
= NULL
;
3751 struct nfs4_label
*label
= NULL
;
3754 if (pnfs_ld_layoutret_on_setattr(inode
) &&
3755 sattr
->ia_valid
& ATTR_SIZE
&&
3756 sattr
->ia_size
< i_size_read(inode
))
3757 pnfs_commit_and_return_layout(inode
);
3759 nfs_fattr_init(fattr
);
3761 /* Deal with open(O_TRUNC) */
3762 if (sattr
->ia_valid
& ATTR_OPEN
)
3763 sattr
->ia_valid
&= ~(ATTR_MTIME
|ATTR_CTIME
);
3765 /* Optimization: if the end result is no change, don't RPC */
3766 if ((sattr
->ia_valid
& ~(ATTR_FILE
|ATTR_OPEN
)) == 0)
3769 /* Search for an existing open(O_WRITE) file */
3770 if (sattr
->ia_valid
& ATTR_FILE
) {
3772 ctx
= nfs_file_open_context(sattr
->ia_file
);
3777 label
= nfs4_label_alloc(NFS_SERVER(inode
), GFP_KERNEL
);
3779 return PTR_ERR(label
);
3781 status
= nfs4_do_setattr(inode
, cred
, fattr
, sattr
, ctx
, NULL
, label
);
3783 nfs_setattr_update_inode(inode
, sattr
, fattr
);
3784 nfs_setsecurity(inode
, fattr
, label
);
3786 nfs4_label_free(label
);
3790 static int _nfs4_proc_lookup(struct rpc_clnt
*clnt
, struct inode
*dir
,
3791 const struct qstr
*name
, struct nfs_fh
*fhandle
,
3792 struct nfs_fattr
*fattr
, struct nfs4_label
*label
)
3794 struct nfs_server
*server
= NFS_SERVER(dir
);
3796 struct nfs4_lookup_arg args
= {
3797 .bitmask
= server
->attr_bitmask
,
3798 .dir_fh
= NFS_FH(dir
),
3801 struct nfs4_lookup_res res
= {
3807 struct rpc_message msg
= {
3808 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOOKUP
],
3813 args
.bitmask
= nfs4_bitmask(server
, label
);
3815 nfs_fattr_init(fattr
);
3817 dprintk("NFS call lookup %s\n", name
->name
);
3818 status
= nfs4_call_sync(clnt
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
3819 dprintk("NFS reply lookup: %d\n", status
);
3823 static void nfs_fixup_secinfo_attributes(struct nfs_fattr
*fattr
)
3825 fattr
->valid
|= NFS_ATTR_FATTR_TYPE
| NFS_ATTR_FATTR_MODE
|
3826 NFS_ATTR_FATTR_NLINK
| NFS_ATTR_FATTR_MOUNTPOINT
;
3827 fattr
->mode
= S_IFDIR
| S_IRUGO
| S_IXUGO
;
3831 static int nfs4_proc_lookup_common(struct rpc_clnt
**clnt
, struct inode
*dir
,
3832 const struct qstr
*name
, struct nfs_fh
*fhandle
,
3833 struct nfs_fattr
*fattr
, struct nfs4_label
*label
)
3835 struct nfs4_exception exception
= { };
3836 struct rpc_clnt
*client
= *clnt
;
3839 err
= _nfs4_proc_lookup(client
, dir
, name
, fhandle
, fattr
, label
);
3840 trace_nfs4_lookup(dir
, name
, err
);
3842 case -NFS4ERR_BADNAME
:
3845 case -NFS4ERR_MOVED
:
3846 err
= nfs4_get_referral(client
, dir
, name
, fattr
, fhandle
);
3847 if (err
== -NFS4ERR_MOVED
)
3848 err
= nfs4_handle_exception(NFS_SERVER(dir
), err
, &exception
);
3850 case -NFS4ERR_WRONGSEC
:
3852 if (client
!= *clnt
)
3854 client
= nfs4_negotiate_security(client
, dir
, name
);
3856 return PTR_ERR(client
);
3858 exception
.retry
= 1;
3861 err
= nfs4_handle_exception(NFS_SERVER(dir
), err
, &exception
);
3863 } while (exception
.retry
);
3868 else if (client
!= *clnt
)
3869 rpc_shutdown_client(client
);
3874 static int nfs4_proc_lookup(struct inode
*dir
, const struct qstr
*name
,
3875 struct nfs_fh
*fhandle
, struct nfs_fattr
*fattr
,
3876 struct nfs4_label
*label
)
3879 struct rpc_clnt
*client
= NFS_CLIENT(dir
);
3881 status
= nfs4_proc_lookup_common(&client
, dir
, name
, fhandle
, fattr
, label
);
3882 if (client
!= NFS_CLIENT(dir
)) {
3883 rpc_shutdown_client(client
);
3884 nfs_fixup_secinfo_attributes(fattr
);
3890 nfs4_proc_lookup_mountpoint(struct inode
*dir
, const struct qstr
*name
,
3891 struct nfs_fh
*fhandle
, struct nfs_fattr
*fattr
)
3893 struct rpc_clnt
*client
= NFS_CLIENT(dir
);
3896 status
= nfs4_proc_lookup_common(&client
, dir
, name
, fhandle
, fattr
, NULL
);
3898 return ERR_PTR(status
);
3899 return (client
== NFS_CLIENT(dir
)) ? rpc_clone_client(client
) : client
;
3902 static int _nfs4_proc_access(struct inode
*inode
, struct nfs_access_entry
*entry
)
3904 struct nfs_server
*server
= NFS_SERVER(inode
);
3905 struct nfs4_accessargs args
= {
3906 .fh
= NFS_FH(inode
),
3907 .bitmask
= server
->cache_consistency_bitmask
,
3909 struct nfs4_accessres res
= {
3912 struct rpc_message msg
= {
3913 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_ACCESS
],
3916 .rpc_cred
= entry
->cred
,
3918 int mode
= entry
->mask
;
3922 * Determine which access bits we want to ask for...
3924 if (mode
& MAY_READ
)
3925 args
.access
|= NFS4_ACCESS_READ
;
3926 if (S_ISDIR(inode
->i_mode
)) {
3927 if (mode
& MAY_WRITE
)
3928 args
.access
|= NFS4_ACCESS_MODIFY
| NFS4_ACCESS_EXTEND
| NFS4_ACCESS_DELETE
;
3929 if (mode
& MAY_EXEC
)
3930 args
.access
|= NFS4_ACCESS_LOOKUP
;
3932 if (mode
& MAY_WRITE
)
3933 args
.access
|= NFS4_ACCESS_MODIFY
| NFS4_ACCESS_EXTEND
;
3934 if (mode
& MAY_EXEC
)
3935 args
.access
|= NFS4_ACCESS_EXECUTE
;
3938 res
.fattr
= nfs_alloc_fattr();
3939 if (res
.fattr
== NULL
)
3942 status
= nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
3944 nfs_access_set_mask(entry
, res
.access
);
3945 nfs_refresh_inode(inode
, res
.fattr
);
3947 nfs_free_fattr(res
.fattr
);
3951 static int nfs4_proc_access(struct inode
*inode
, struct nfs_access_entry
*entry
)
3953 struct nfs4_exception exception
= { };
3956 err
= _nfs4_proc_access(inode
, entry
);
3957 trace_nfs4_access(inode
, err
);
3958 err
= nfs4_handle_exception(NFS_SERVER(inode
), err
,
3960 } while (exception
.retry
);
3965 * TODO: For the time being, we don't try to get any attributes
3966 * along with any of the zero-copy operations READ, READDIR,
3969 * In the case of the first three, we want to put the GETATTR
3970 * after the read-type operation -- this is because it is hard
3971 * to predict the length of a GETATTR response in v4, and thus
3972 * align the READ data correctly. This means that the GETATTR
3973 * may end up partially falling into the page cache, and we should
3974 * shift it into the 'tail' of the xdr_buf before processing.
3975 * To do this efficiently, we need to know the total length
3976 * of data received, which doesn't seem to be available outside
3979 * In the case of WRITE, we also want to put the GETATTR after
3980 * the operation -- in this case because we want to make sure
3981 * we get the post-operation mtime and size.
3983 * Both of these changes to the XDR layer would in fact be quite
3984 * minor, but I decided to leave them for a subsequent patch.
3986 static int _nfs4_proc_readlink(struct inode
*inode
, struct page
*page
,
3987 unsigned int pgbase
, unsigned int pglen
)
3989 struct nfs4_readlink args
= {
3990 .fh
= NFS_FH(inode
),
3995 struct nfs4_readlink_res res
;
3996 struct rpc_message msg
= {
3997 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_READLINK
],
4002 return nfs4_call_sync(NFS_SERVER(inode
)->client
, NFS_SERVER(inode
), &msg
, &args
.seq_args
, &res
.seq_res
, 0);
4005 static int nfs4_proc_readlink(struct inode
*inode
, struct page
*page
,
4006 unsigned int pgbase
, unsigned int pglen
)
4008 struct nfs4_exception exception
= { };
4011 err
= _nfs4_proc_readlink(inode
, page
, pgbase
, pglen
);
4012 trace_nfs4_readlink(inode
, err
);
4013 err
= nfs4_handle_exception(NFS_SERVER(inode
), err
,
4015 } while (exception
.retry
);
4020 * This is just for mknod. open(O_CREAT) will always do ->open_context().
4023 nfs4_proc_create(struct inode
*dir
, struct dentry
*dentry
, struct iattr
*sattr
,
4026 struct nfs_server
*server
= NFS_SERVER(dir
);
4027 struct nfs4_label l
, *ilabel
= NULL
;
4028 struct nfs_open_context
*ctx
;
4029 struct nfs4_state
*state
;
4032 ctx
= alloc_nfs_open_context(dentry
, FMODE_READ
, NULL
);
4034 return PTR_ERR(ctx
);
4036 ilabel
= nfs4_label_init_security(dir
, dentry
, sattr
, &l
);
4038 if (!(server
->attr_bitmask
[2] & FATTR4_WORD2_MODE_UMASK
))
4039 sattr
->ia_mode
&= ~current_umask();
4040 state
= nfs4_do_open(dir
, ctx
, flags
, sattr
, ilabel
, NULL
);
4041 if (IS_ERR(state
)) {
4042 status
= PTR_ERR(state
);
4046 nfs4_label_release_security(ilabel
);
4047 put_nfs_open_context(ctx
);
4051 static int _nfs4_proc_remove(struct inode
*dir
, const struct qstr
*name
)
4053 struct nfs_server
*server
= NFS_SERVER(dir
);
4054 struct nfs_removeargs args
= {
4058 struct nfs_removeres res
= {
4061 struct rpc_message msg
= {
4062 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_REMOVE
],
4068 status
= nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 1);
4070 update_changeattr(dir
, &res
.cinfo
);
4074 static int nfs4_proc_remove(struct inode
*dir
, const struct qstr
*name
)
4076 struct nfs4_exception exception
= { };
4079 err
= _nfs4_proc_remove(dir
, name
);
4080 trace_nfs4_remove(dir
, name
, err
);
4081 err
= nfs4_handle_exception(NFS_SERVER(dir
), err
,
4083 } while (exception
.retry
);
4087 static void nfs4_proc_unlink_setup(struct rpc_message
*msg
, struct inode
*dir
)
4089 struct nfs_server
*server
= NFS_SERVER(dir
);
4090 struct nfs_removeargs
*args
= msg
->rpc_argp
;
4091 struct nfs_removeres
*res
= msg
->rpc_resp
;
4093 res
->server
= server
;
4094 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_REMOVE
];
4095 nfs4_init_sequence(&args
->seq_args
, &res
->seq_res
, 1);
4097 nfs_fattr_init(res
->dir_attr
);
4100 static void nfs4_proc_unlink_rpc_prepare(struct rpc_task
*task
, struct nfs_unlinkdata
*data
)
4102 nfs4_setup_sequence(NFS_SB(data
->dentry
->d_sb
),
4103 &data
->args
.seq_args
,
4108 static int nfs4_proc_unlink_done(struct rpc_task
*task
, struct inode
*dir
)
4110 struct nfs_unlinkdata
*data
= task
->tk_calldata
;
4111 struct nfs_removeres
*res
= &data
->res
;
4113 if (!nfs4_sequence_done(task
, &res
->seq_res
))
4115 if (nfs4_async_handle_error(task
, res
->server
, NULL
,
4116 &data
->timeout
) == -EAGAIN
)
4118 update_changeattr(dir
, &res
->cinfo
);
4122 static void nfs4_proc_rename_setup(struct rpc_message
*msg
, struct inode
*dir
)
4124 struct nfs_server
*server
= NFS_SERVER(dir
);
4125 struct nfs_renameargs
*arg
= msg
->rpc_argp
;
4126 struct nfs_renameres
*res
= msg
->rpc_resp
;
4128 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RENAME
];
4129 res
->server
= server
;
4130 nfs4_init_sequence(&arg
->seq_args
, &res
->seq_res
, 1);
4133 static void nfs4_proc_rename_rpc_prepare(struct rpc_task
*task
, struct nfs_renamedata
*data
)
4135 nfs4_setup_sequence(NFS_SERVER(data
->old_dir
),
4136 &data
->args
.seq_args
,
4141 static int nfs4_proc_rename_done(struct rpc_task
*task
, struct inode
*old_dir
,
4142 struct inode
*new_dir
)
4144 struct nfs_renamedata
*data
= task
->tk_calldata
;
4145 struct nfs_renameres
*res
= &data
->res
;
4147 if (!nfs4_sequence_done(task
, &res
->seq_res
))
4149 if (nfs4_async_handle_error(task
, res
->server
, NULL
, &data
->timeout
) == -EAGAIN
)
4152 update_changeattr(old_dir
, &res
->old_cinfo
);
4153 update_changeattr(new_dir
, &res
->new_cinfo
);
4157 static int _nfs4_proc_link(struct inode
*inode
, struct inode
*dir
, const struct qstr
*name
)
4159 struct nfs_server
*server
= NFS_SERVER(inode
);
4160 struct nfs4_link_arg arg
= {
4161 .fh
= NFS_FH(inode
),
4162 .dir_fh
= NFS_FH(dir
),
4164 .bitmask
= server
->attr_bitmask
,
4166 struct nfs4_link_res res
= {
4170 struct rpc_message msg
= {
4171 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LINK
],
4175 int status
= -ENOMEM
;
4177 res
.fattr
= nfs_alloc_fattr();
4178 if (res
.fattr
== NULL
)
4181 res
.label
= nfs4_label_alloc(server
, GFP_KERNEL
);
4182 if (IS_ERR(res
.label
)) {
4183 status
= PTR_ERR(res
.label
);
4186 arg
.bitmask
= nfs4_bitmask(server
, res
.label
);
4188 status
= nfs4_call_sync(server
->client
, server
, &msg
, &arg
.seq_args
, &res
.seq_res
, 1);
4190 update_changeattr(dir
, &res
.cinfo
);
4191 status
= nfs_post_op_update_inode(inode
, res
.fattr
);
4193 nfs_setsecurity(inode
, res
.fattr
, res
.label
);
4197 nfs4_label_free(res
.label
);
4200 nfs_free_fattr(res
.fattr
);
4204 static int nfs4_proc_link(struct inode
*inode
, struct inode
*dir
, const struct qstr
*name
)
4206 struct nfs4_exception exception
= { };
4209 err
= nfs4_handle_exception(NFS_SERVER(inode
),
4210 _nfs4_proc_link(inode
, dir
, name
),
4212 } while (exception
.retry
);
4216 struct nfs4_createdata
{
4217 struct rpc_message msg
;
4218 struct nfs4_create_arg arg
;
4219 struct nfs4_create_res res
;
4221 struct nfs_fattr fattr
;
4222 struct nfs4_label
*label
;
4225 static struct nfs4_createdata
*nfs4_alloc_createdata(struct inode
*dir
,
4226 const struct qstr
*name
, struct iattr
*sattr
, u32 ftype
)
4228 struct nfs4_createdata
*data
;
4230 data
= kzalloc(sizeof(*data
), GFP_KERNEL
);
4232 struct nfs_server
*server
= NFS_SERVER(dir
);
4234 data
->label
= nfs4_label_alloc(server
, GFP_KERNEL
);
4235 if (IS_ERR(data
->label
))
4238 data
->msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_CREATE
];
4239 data
->msg
.rpc_argp
= &data
->arg
;
4240 data
->msg
.rpc_resp
= &data
->res
;
4241 data
->arg
.dir_fh
= NFS_FH(dir
);
4242 data
->arg
.server
= server
;
4243 data
->arg
.name
= name
;
4244 data
->arg
.attrs
= sattr
;
4245 data
->arg
.ftype
= ftype
;
4246 data
->arg
.bitmask
= nfs4_bitmask(server
, data
->label
);
4247 data
->arg
.umask
= current_umask();
4248 data
->res
.server
= server
;
4249 data
->res
.fh
= &data
->fh
;
4250 data
->res
.fattr
= &data
->fattr
;
4251 data
->res
.label
= data
->label
;
4252 nfs_fattr_init(data
->res
.fattr
);
4260 static int nfs4_do_create(struct inode
*dir
, struct dentry
*dentry
, struct nfs4_createdata
*data
)
4262 int status
= nfs4_call_sync(NFS_SERVER(dir
)->client
, NFS_SERVER(dir
), &data
->msg
,
4263 &data
->arg
.seq_args
, &data
->res
.seq_res
, 1);
4265 update_changeattr(dir
, &data
->res
.dir_cinfo
);
4266 status
= nfs_instantiate(dentry
, data
->res
.fh
, data
->res
.fattr
, data
->res
.label
);
4271 static void nfs4_free_createdata(struct nfs4_createdata
*data
)
4273 nfs4_label_free(data
->label
);
4277 static int _nfs4_proc_symlink(struct inode
*dir
, struct dentry
*dentry
,
4278 struct page
*page
, unsigned int len
, struct iattr
*sattr
,
4279 struct nfs4_label
*label
)
4281 struct nfs4_createdata
*data
;
4282 int status
= -ENAMETOOLONG
;
4284 if (len
> NFS4_MAXPATHLEN
)
4288 data
= nfs4_alloc_createdata(dir
, &dentry
->d_name
, sattr
, NF4LNK
);
4292 data
->msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SYMLINK
];
4293 data
->arg
.u
.symlink
.pages
= &page
;
4294 data
->arg
.u
.symlink
.len
= len
;
4295 data
->arg
.label
= label
;
4297 status
= nfs4_do_create(dir
, dentry
, data
);
4299 nfs4_free_createdata(data
);
4304 static int nfs4_proc_symlink(struct inode
*dir
, struct dentry
*dentry
,
4305 struct page
*page
, unsigned int len
, struct iattr
*sattr
)
4307 struct nfs4_exception exception
= { };
4308 struct nfs4_label l
, *label
= NULL
;
4311 label
= nfs4_label_init_security(dir
, dentry
, sattr
, &l
);
4314 err
= _nfs4_proc_symlink(dir
, dentry
, page
, len
, sattr
, label
);
4315 trace_nfs4_symlink(dir
, &dentry
->d_name
, err
);
4316 err
= nfs4_handle_exception(NFS_SERVER(dir
), err
,
4318 } while (exception
.retry
);
4320 nfs4_label_release_security(label
);
4324 static int _nfs4_proc_mkdir(struct inode
*dir
, struct dentry
*dentry
,
4325 struct iattr
*sattr
, struct nfs4_label
*label
)
4327 struct nfs4_createdata
*data
;
4328 int status
= -ENOMEM
;
4330 data
= nfs4_alloc_createdata(dir
, &dentry
->d_name
, sattr
, NF4DIR
);
4334 data
->arg
.label
= label
;
4335 status
= nfs4_do_create(dir
, dentry
, data
);
4337 nfs4_free_createdata(data
);
4342 static int nfs4_proc_mkdir(struct inode
*dir
, struct dentry
*dentry
,
4343 struct iattr
*sattr
)
4345 struct nfs_server
*server
= NFS_SERVER(dir
);
4346 struct nfs4_exception exception
= { };
4347 struct nfs4_label l
, *label
= NULL
;
4350 label
= nfs4_label_init_security(dir
, dentry
, sattr
, &l
);
4352 if (!(server
->attr_bitmask
[2] & FATTR4_WORD2_MODE_UMASK
))
4353 sattr
->ia_mode
&= ~current_umask();
4355 err
= _nfs4_proc_mkdir(dir
, dentry
, sattr
, label
);
4356 trace_nfs4_mkdir(dir
, &dentry
->d_name
, err
);
4357 err
= nfs4_handle_exception(NFS_SERVER(dir
), err
,
4359 } while (exception
.retry
);
4360 nfs4_label_release_security(label
);
4365 static int _nfs4_proc_readdir(struct dentry
*dentry
, struct rpc_cred
*cred
,
4366 u64 cookie
, struct page
**pages
, unsigned int count
, int plus
)
4368 struct inode
*dir
= d_inode(dentry
);
4369 struct nfs4_readdir_arg args
= {
4374 .bitmask
= NFS_SERVER(d_inode(dentry
))->attr_bitmask
,
4377 struct nfs4_readdir_res res
;
4378 struct rpc_message msg
= {
4379 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_READDIR
],
4386 dprintk("%s: dentry = %pd2, cookie = %Lu\n", __func__
,
4388 (unsigned long long)cookie
);
4389 nfs4_setup_readdir(cookie
, NFS_I(dir
)->cookieverf
, dentry
, &args
);
4390 res
.pgbase
= args
.pgbase
;
4391 status
= nfs4_call_sync(NFS_SERVER(dir
)->client
, NFS_SERVER(dir
), &msg
, &args
.seq_args
, &res
.seq_res
, 0);
4393 memcpy(NFS_I(dir
)->cookieverf
, res
.verifier
.data
, NFS4_VERIFIER_SIZE
);
4394 status
+= args
.pgbase
;
4397 nfs_invalidate_atime(dir
);
4399 dprintk("%s: returns %d\n", __func__
, status
);
4403 static int nfs4_proc_readdir(struct dentry
*dentry
, struct rpc_cred
*cred
,
4404 u64 cookie
, struct page
**pages
, unsigned int count
, int plus
)
4406 struct nfs4_exception exception
= { };
4409 err
= _nfs4_proc_readdir(dentry
, cred
, cookie
,
4410 pages
, count
, plus
);
4411 trace_nfs4_readdir(d_inode(dentry
), err
);
4412 err
= nfs4_handle_exception(NFS_SERVER(d_inode(dentry
)), err
,
4414 } while (exception
.retry
);
4418 static int _nfs4_proc_mknod(struct inode
*dir
, struct dentry
*dentry
,
4419 struct iattr
*sattr
, struct nfs4_label
*label
, dev_t rdev
)
4421 struct nfs4_createdata
*data
;
4422 int mode
= sattr
->ia_mode
;
4423 int status
= -ENOMEM
;
4425 data
= nfs4_alloc_createdata(dir
, &dentry
->d_name
, sattr
, NF4SOCK
);
4430 data
->arg
.ftype
= NF4FIFO
;
4431 else if (S_ISBLK(mode
)) {
4432 data
->arg
.ftype
= NF4BLK
;
4433 data
->arg
.u
.device
.specdata1
= MAJOR(rdev
);
4434 data
->arg
.u
.device
.specdata2
= MINOR(rdev
);
4436 else if (S_ISCHR(mode
)) {
4437 data
->arg
.ftype
= NF4CHR
;
4438 data
->arg
.u
.device
.specdata1
= MAJOR(rdev
);
4439 data
->arg
.u
.device
.specdata2
= MINOR(rdev
);
4440 } else if (!S_ISSOCK(mode
)) {
4445 data
->arg
.label
= label
;
4446 status
= nfs4_do_create(dir
, dentry
, data
);
4448 nfs4_free_createdata(data
);
4453 static int nfs4_proc_mknod(struct inode
*dir
, struct dentry
*dentry
,
4454 struct iattr
*sattr
, dev_t rdev
)
4456 struct nfs_server
*server
= NFS_SERVER(dir
);
4457 struct nfs4_exception exception
= { };
4458 struct nfs4_label l
, *label
= NULL
;
4461 label
= nfs4_label_init_security(dir
, dentry
, sattr
, &l
);
4463 if (!(server
->attr_bitmask
[2] & FATTR4_WORD2_MODE_UMASK
))
4464 sattr
->ia_mode
&= ~current_umask();
4466 err
= _nfs4_proc_mknod(dir
, dentry
, sattr
, label
, rdev
);
4467 trace_nfs4_mknod(dir
, &dentry
->d_name
, err
);
4468 err
= nfs4_handle_exception(NFS_SERVER(dir
), err
,
4470 } while (exception
.retry
);
4472 nfs4_label_release_security(label
);
4477 static int _nfs4_proc_statfs(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
4478 struct nfs_fsstat
*fsstat
)
4480 struct nfs4_statfs_arg args
= {
4482 .bitmask
= server
->attr_bitmask
,
4484 struct nfs4_statfs_res res
= {
4487 struct rpc_message msg
= {
4488 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_STATFS
],
4493 nfs_fattr_init(fsstat
->fattr
);
4494 return nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
4497 static int nfs4_proc_statfs(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fsstat
*fsstat
)
4499 struct nfs4_exception exception
= { };
4502 err
= nfs4_handle_exception(server
,
4503 _nfs4_proc_statfs(server
, fhandle
, fsstat
),
4505 } while (exception
.retry
);
4509 static int _nfs4_do_fsinfo(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
4510 struct nfs_fsinfo
*fsinfo
)
4512 struct nfs4_fsinfo_arg args
= {
4514 .bitmask
= server
->attr_bitmask
,
4516 struct nfs4_fsinfo_res res
= {
4519 struct rpc_message msg
= {
4520 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_FSINFO
],
4525 return nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
4528 static int nfs4_do_fsinfo(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fsinfo
*fsinfo
)
4530 struct nfs4_exception exception
= { };
4531 unsigned long now
= jiffies
;
4535 err
= _nfs4_do_fsinfo(server
, fhandle
, fsinfo
);
4536 trace_nfs4_fsinfo(server
, fhandle
, fsinfo
->fattr
, err
);
4538 nfs4_set_lease_period(server
->nfs_client
,
4539 fsinfo
->lease_time
* HZ
,
4543 err
= nfs4_handle_exception(server
, err
, &exception
);
4544 } while (exception
.retry
);
4548 static int nfs4_proc_fsinfo(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fsinfo
*fsinfo
)
4552 nfs_fattr_init(fsinfo
->fattr
);
4553 error
= nfs4_do_fsinfo(server
, fhandle
, fsinfo
);
4555 /* block layout checks this! */
4556 server
->pnfs_blksize
= fsinfo
->blksize
;
4557 set_pnfs_layoutdriver(server
, fhandle
, fsinfo
);
4563 static int _nfs4_proc_pathconf(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
4564 struct nfs_pathconf
*pathconf
)
4566 struct nfs4_pathconf_arg args
= {
4568 .bitmask
= server
->attr_bitmask
,
4570 struct nfs4_pathconf_res res
= {
4571 .pathconf
= pathconf
,
4573 struct rpc_message msg
= {
4574 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_PATHCONF
],
4579 /* None of the pathconf attributes are mandatory to implement */
4580 if ((args
.bitmask
[0] & nfs4_pathconf_bitmap
[0]) == 0) {
4581 memset(pathconf
, 0, sizeof(*pathconf
));
4585 nfs_fattr_init(pathconf
->fattr
);
4586 return nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
4589 static int nfs4_proc_pathconf(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
4590 struct nfs_pathconf
*pathconf
)
4592 struct nfs4_exception exception
= { };
4596 err
= nfs4_handle_exception(server
,
4597 _nfs4_proc_pathconf(server
, fhandle
, pathconf
),
4599 } while (exception
.retry
);
4603 int nfs4_set_rw_stateid(nfs4_stateid
*stateid
,
4604 const struct nfs_open_context
*ctx
,
4605 const struct nfs_lock_context
*l_ctx
,
4608 return nfs4_select_rw_stateid(ctx
->state
, fmode
, l_ctx
, stateid
, NULL
);
4610 EXPORT_SYMBOL_GPL(nfs4_set_rw_stateid
);
4612 static bool nfs4_stateid_is_current(nfs4_stateid
*stateid
,
4613 const struct nfs_open_context
*ctx
,
4614 const struct nfs_lock_context
*l_ctx
,
4617 nfs4_stateid current_stateid
;
4619 /* If the current stateid represents a lost lock, then exit */
4620 if (nfs4_set_rw_stateid(¤t_stateid
, ctx
, l_ctx
, fmode
) == -EIO
)
4622 return nfs4_stateid_match(stateid
, ¤t_stateid
);
4625 static bool nfs4_error_stateid_expired(int err
)
4628 case -NFS4ERR_DELEG_REVOKED
:
4629 case -NFS4ERR_ADMIN_REVOKED
:
4630 case -NFS4ERR_BAD_STATEID
:
4631 case -NFS4ERR_STALE_STATEID
:
4632 case -NFS4ERR_OLD_STATEID
:
4633 case -NFS4ERR_OPENMODE
:
4634 case -NFS4ERR_EXPIRED
:
4640 static int nfs4_read_done_cb(struct rpc_task
*task
, struct nfs_pgio_header
*hdr
)
4642 struct nfs_server
*server
= NFS_SERVER(hdr
->inode
);
4644 trace_nfs4_read(hdr
, task
->tk_status
);
4645 if (task
->tk_status
< 0) {
4646 struct nfs4_exception exception
= {
4647 .inode
= hdr
->inode
,
4648 .state
= hdr
->args
.context
->state
,
4649 .stateid
= &hdr
->args
.stateid
,
4651 task
->tk_status
= nfs4_async_handle_exception(task
,
4652 server
, task
->tk_status
, &exception
);
4653 if (exception
.retry
) {
4654 rpc_restart_call_prepare(task
);
4659 if (task
->tk_status
> 0)
4660 renew_lease(server
, hdr
->timestamp
);
4664 static bool nfs4_read_stateid_changed(struct rpc_task
*task
,
4665 struct nfs_pgio_args
*args
)
4668 if (!nfs4_error_stateid_expired(task
->tk_status
) ||
4669 nfs4_stateid_is_current(&args
->stateid
,
4674 rpc_restart_call_prepare(task
);
4678 static int nfs4_read_done(struct rpc_task
*task
, struct nfs_pgio_header
*hdr
)
4681 dprintk("--> %s\n", __func__
);
4683 if (!nfs4_sequence_done(task
, &hdr
->res
.seq_res
))
4685 if (nfs4_read_stateid_changed(task
, &hdr
->args
))
4687 if (task
->tk_status
> 0)
4688 nfs_invalidate_atime(hdr
->inode
);
4689 return hdr
->pgio_done_cb
? hdr
->pgio_done_cb(task
, hdr
) :
4690 nfs4_read_done_cb(task
, hdr
);
4693 static void nfs4_proc_read_setup(struct nfs_pgio_header
*hdr
,
4694 struct rpc_message
*msg
)
4696 hdr
->timestamp
= jiffies
;
4697 if (!hdr
->pgio_done_cb
)
4698 hdr
->pgio_done_cb
= nfs4_read_done_cb
;
4699 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_READ
];
4700 nfs4_init_sequence(&hdr
->args
.seq_args
, &hdr
->res
.seq_res
, 0);
4703 static int nfs4_proc_pgio_rpc_prepare(struct rpc_task
*task
,
4704 struct nfs_pgio_header
*hdr
)
4706 if (nfs4_setup_sequence(NFS_SERVER(hdr
->inode
),
4707 &hdr
->args
.seq_args
,
4711 if (nfs4_set_rw_stateid(&hdr
->args
.stateid
, hdr
->args
.context
,
4712 hdr
->args
.lock_context
,
4713 hdr
->rw_ops
->rw_mode
) == -EIO
)
4715 if (unlikely(test_bit(NFS_CONTEXT_BAD
, &hdr
->args
.context
->flags
)))
4720 static int nfs4_write_done_cb(struct rpc_task
*task
,
4721 struct nfs_pgio_header
*hdr
)
4723 struct inode
*inode
= hdr
->inode
;
4725 trace_nfs4_write(hdr
, task
->tk_status
);
4726 if (task
->tk_status
< 0) {
4727 struct nfs4_exception exception
= {
4728 .inode
= hdr
->inode
,
4729 .state
= hdr
->args
.context
->state
,
4730 .stateid
= &hdr
->args
.stateid
,
4732 task
->tk_status
= nfs4_async_handle_exception(task
,
4733 NFS_SERVER(inode
), task
->tk_status
,
4735 if (exception
.retry
) {
4736 rpc_restart_call_prepare(task
);
4740 if (task
->tk_status
>= 0) {
4741 renew_lease(NFS_SERVER(inode
), hdr
->timestamp
);
4742 nfs_writeback_update_inode(hdr
);
4747 static bool nfs4_write_stateid_changed(struct rpc_task
*task
,
4748 struct nfs_pgio_args
*args
)
4751 if (!nfs4_error_stateid_expired(task
->tk_status
) ||
4752 nfs4_stateid_is_current(&args
->stateid
,
4757 rpc_restart_call_prepare(task
);
4761 static int nfs4_write_done(struct rpc_task
*task
, struct nfs_pgio_header
*hdr
)
4763 if (!nfs4_sequence_done(task
, &hdr
->res
.seq_res
))
4765 if (nfs4_write_stateid_changed(task
, &hdr
->args
))
4767 return hdr
->pgio_done_cb
? hdr
->pgio_done_cb(task
, hdr
) :
4768 nfs4_write_done_cb(task
, hdr
);
4772 bool nfs4_write_need_cache_consistency_data(struct nfs_pgio_header
*hdr
)
4774 /* Don't request attributes for pNFS or O_DIRECT writes */
4775 if (hdr
->ds_clp
!= NULL
|| hdr
->dreq
!= NULL
)
4777 /* Otherwise, request attributes if and only if we don't hold
4780 return nfs4_have_delegation(hdr
->inode
, FMODE_READ
) == 0;
4783 static void nfs4_proc_write_setup(struct nfs_pgio_header
*hdr
,
4784 struct rpc_message
*msg
)
4786 struct nfs_server
*server
= NFS_SERVER(hdr
->inode
);
4788 if (!nfs4_write_need_cache_consistency_data(hdr
)) {
4789 hdr
->args
.bitmask
= NULL
;
4790 hdr
->res
.fattr
= NULL
;
4792 hdr
->args
.bitmask
= server
->cache_consistency_bitmask
;
4794 if (!hdr
->pgio_done_cb
)
4795 hdr
->pgio_done_cb
= nfs4_write_done_cb
;
4796 hdr
->res
.server
= server
;
4797 hdr
->timestamp
= jiffies
;
4799 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_WRITE
];
4800 nfs4_init_sequence(&hdr
->args
.seq_args
, &hdr
->res
.seq_res
, 1);
4803 static void nfs4_proc_commit_rpc_prepare(struct rpc_task
*task
, struct nfs_commit_data
*data
)
4805 nfs4_setup_sequence(NFS_SERVER(data
->inode
),
4806 &data
->args
.seq_args
,
4811 static int nfs4_commit_done_cb(struct rpc_task
*task
, struct nfs_commit_data
*data
)
4813 struct inode
*inode
= data
->inode
;
4815 trace_nfs4_commit(data
, task
->tk_status
);
4816 if (nfs4_async_handle_error(task
, NFS_SERVER(inode
),
4817 NULL
, NULL
) == -EAGAIN
) {
4818 rpc_restart_call_prepare(task
);
4824 static int nfs4_commit_done(struct rpc_task
*task
, struct nfs_commit_data
*data
)
4826 if (!nfs4_sequence_done(task
, &data
->res
.seq_res
))
4828 return data
->commit_done_cb(task
, data
);
4831 static void nfs4_proc_commit_setup(struct nfs_commit_data
*data
, struct rpc_message
*msg
)
4833 struct nfs_server
*server
= NFS_SERVER(data
->inode
);
4835 if (data
->commit_done_cb
== NULL
)
4836 data
->commit_done_cb
= nfs4_commit_done_cb
;
4837 data
->res
.server
= server
;
4838 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_COMMIT
];
4839 nfs4_init_sequence(&data
->args
.seq_args
, &data
->res
.seq_res
, 1);
4842 struct nfs4_renewdata
{
4843 struct nfs_client
*client
;
4844 unsigned long timestamp
;
4848 * nfs4_proc_async_renew(): This is not one of the nfs_rpc_ops; it is a special
4849 * standalone procedure for queueing an asynchronous RENEW.
4851 static void nfs4_renew_release(void *calldata
)
4853 struct nfs4_renewdata
*data
= calldata
;
4854 struct nfs_client
*clp
= data
->client
;
4856 if (atomic_read(&clp
->cl_count
) > 1)
4857 nfs4_schedule_state_renewal(clp
);
4858 nfs_put_client(clp
);
4862 static void nfs4_renew_done(struct rpc_task
*task
, void *calldata
)
4864 struct nfs4_renewdata
*data
= calldata
;
4865 struct nfs_client
*clp
= data
->client
;
4866 unsigned long timestamp
= data
->timestamp
;
4868 trace_nfs4_renew_async(clp
, task
->tk_status
);
4869 switch (task
->tk_status
) {
4872 case -NFS4ERR_LEASE_MOVED
:
4873 nfs4_schedule_lease_moved_recovery(clp
);
4876 /* Unless we're shutting down, schedule state recovery! */
4877 if (test_bit(NFS_CS_RENEWD
, &clp
->cl_res_state
) == 0)
4879 if (task
->tk_status
!= NFS4ERR_CB_PATH_DOWN
) {
4880 nfs4_schedule_lease_recovery(clp
);
4883 nfs4_schedule_path_down_recovery(clp
);
4885 do_renew_lease(clp
, timestamp
);
4888 static const struct rpc_call_ops nfs4_renew_ops
= {
4889 .rpc_call_done
= nfs4_renew_done
,
4890 .rpc_release
= nfs4_renew_release
,
4893 static int nfs4_proc_async_renew(struct nfs_client
*clp
, struct rpc_cred
*cred
, unsigned renew_flags
)
4895 struct rpc_message msg
= {
4896 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RENEW
],
4900 struct nfs4_renewdata
*data
;
4902 if (renew_flags
== 0)
4904 if (!atomic_inc_not_zero(&clp
->cl_count
))
4906 data
= kmalloc(sizeof(*data
), GFP_NOFS
);
4910 data
->timestamp
= jiffies
;
4911 return rpc_call_async(clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
,
4912 &nfs4_renew_ops
, data
);
4915 static int nfs4_proc_renew(struct nfs_client
*clp
, struct rpc_cred
*cred
)
4917 struct rpc_message msg
= {
4918 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RENEW
],
4922 unsigned long now
= jiffies
;
4925 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
4928 do_renew_lease(clp
, now
);
4932 static inline int nfs4_server_supports_acls(struct nfs_server
*server
)
4934 return server
->caps
& NFS_CAP_ACLS
;
4937 /* Assuming that XATTR_SIZE_MAX is a multiple of PAGE_SIZE, and that
4938 * it's OK to put sizeof(void) * (XATTR_SIZE_MAX/PAGE_SIZE) bytes on
4941 #define NFS4ACL_MAXPAGES DIV_ROUND_UP(XATTR_SIZE_MAX, PAGE_SIZE)
4943 static int buf_to_pages_noslab(const void *buf
, size_t buflen
,
4944 struct page
**pages
)
4946 struct page
*newpage
, **spages
;
4952 len
= min_t(size_t, PAGE_SIZE
, buflen
);
4953 newpage
= alloc_page(GFP_KERNEL
);
4955 if (newpage
== NULL
)
4957 memcpy(page_address(newpage
), buf
, len
);
4962 } while (buflen
!= 0);
4968 __free_page(spages
[rc
-1]);
4972 struct nfs4_cached_acl
{
4978 static void nfs4_set_cached_acl(struct inode
*inode
, struct nfs4_cached_acl
*acl
)
4980 struct nfs_inode
*nfsi
= NFS_I(inode
);
4982 spin_lock(&inode
->i_lock
);
4983 kfree(nfsi
->nfs4_acl
);
4984 nfsi
->nfs4_acl
= acl
;
4985 spin_unlock(&inode
->i_lock
);
4988 static void nfs4_zap_acl_attr(struct inode
*inode
)
4990 nfs4_set_cached_acl(inode
, NULL
);
4993 static inline ssize_t
nfs4_read_cached_acl(struct inode
*inode
, char *buf
, size_t buflen
)
4995 struct nfs_inode
*nfsi
= NFS_I(inode
);
4996 struct nfs4_cached_acl
*acl
;
4999 spin_lock(&inode
->i_lock
);
5000 acl
= nfsi
->nfs4_acl
;
5003 if (buf
== NULL
) /* user is just asking for length */
5005 if (acl
->cached
== 0)
5007 ret
= -ERANGE
; /* see getxattr(2) man page */
5008 if (acl
->len
> buflen
)
5010 memcpy(buf
, acl
->data
, acl
->len
);
5014 spin_unlock(&inode
->i_lock
);
5018 static void nfs4_write_cached_acl(struct inode
*inode
, struct page
**pages
, size_t pgbase
, size_t acl_len
)
5020 struct nfs4_cached_acl
*acl
;
5021 size_t buflen
= sizeof(*acl
) + acl_len
;
5023 if (buflen
<= PAGE_SIZE
) {
5024 acl
= kmalloc(buflen
, GFP_KERNEL
);
5028 _copy_from_pages(acl
->data
, pages
, pgbase
, acl_len
);
5030 acl
= kmalloc(sizeof(*acl
), GFP_KERNEL
);
5037 nfs4_set_cached_acl(inode
, acl
);
5041 * The getxattr API returns the required buffer length when called with a
5042 * NULL buf. The NFSv4 acl tool then calls getxattr again after allocating
5043 * the required buf. On a NULL buf, we send a page of data to the server
5044 * guessing that the ACL request can be serviced by a page. If so, we cache
5045 * up to the page of ACL data, and the 2nd call to getxattr is serviced by
5046 * the cache. If not so, we throw away the page, and cache the required
5047 * length. The next getxattr call will then produce another round trip to
5048 * the server, this time with the input buf of the required size.
5050 static ssize_t
__nfs4_get_acl_uncached(struct inode
*inode
, void *buf
, size_t buflen
)
5052 struct page
*pages
[NFS4ACL_MAXPAGES
] = {NULL
, };
5053 struct nfs_getaclargs args
= {
5054 .fh
= NFS_FH(inode
),
5058 struct nfs_getaclres res
= {
5061 struct rpc_message msg
= {
5062 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GETACL
],
5066 unsigned int npages
= DIV_ROUND_UP(buflen
, PAGE_SIZE
);
5067 int ret
= -ENOMEM
, i
;
5069 /* As long as we're doing a round trip to the server anyway,
5070 * let's be prepared for a page of acl data. */
5073 if (npages
> ARRAY_SIZE(pages
))
5076 for (i
= 0; i
< npages
; i
++) {
5077 pages
[i
] = alloc_page(GFP_KERNEL
);
5082 /* for decoding across pages */
5083 res
.acl_scratch
= alloc_page(GFP_KERNEL
);
5084 if (!res
.acl_scratch
)
5087 args
.acl_len
= npages
* PAGE_SIZE
;
5089 dprintk("%s buf %p buflen %zu npages %d args.acl_len %zu\n",
5090 __func__
, buf
, buflen
, npages
, args
.acl_len
);
5091 ret
= nfs4_call_sync(NFS_SERVER(inode
)->client
, NFS_SERVER(inode
),
5092 &msg
, &args
.seq_args
, &res
.seq_res
, 0);
5096 /* Handle the case where the passed-in buffer is too short */
5097 if (res
.acl_flags
& NFS4_ACL_TRUNC
) {
5098 /* Did the user only issue a request for the acl length? */
5104 nfs4_write_cached_acl(inode
, pages
, res
.acl_data_offset
, res
.acl_len
);
5106 if (res
.acl_len
> buflen
) {
5110 _copy_from_pages(buf
, pages
, res
.acl_data_offset
, res
.acl_len
);
5115 for (i
= 0; i
< npages
; i
++)
5117 __free_page(pages
[i
]);
5118 if (res
.acl_scratch
)
5119 __free_page(res
.acl_scratch
);
5123 static ssize_t
nfs4_get_acl_uncached(struct inode
*inode
, void *buf
, size_t buflen
)
5125 struct nfs4_exception exception
= { };
5128 ret
= __nfs4_get_acl_uncached(inode
, buf
, buflen
);
5129 trace_nfs4_get_acl(inode
, ret
);
5132 ret
= nfs4_handle_exception(NFS_SERVER(inode
), ret
, &exception
);
5133 } while (exception
.retry
);
5137 static ssize_t
nfs4_proc_get_acl(struct inode
*inode
, void *buf
, size_t buflen
)
5139 struct nfs_server
*server
= NFS_SERVER(inode
);
5142 if (!nfs4_server_supports_acls(server
))
5144 ret
= nfs_revalidate_inode(server
, inode
);
5147 if (NFS_I(inode
)->cache_validity
& NFS_INO_INVALID_ACL
)
5148 nfs_zap_acl_cache(inode
);
5149 ret
= nfs4_read_cached_acl(inode
, buf
, buflen
);
5151 /* -ENOENT is returned if there is no ACL or if there is an ACL
5152 * but no cached acl data, just the acl length */
5154 return nfs4_get_acl_uncached(inode
, buf
, buflen
);
5157 static int __nfs4_proc_set_acl(struct inode
*inode
, const void *buf
, size_t buflen
)
5159 struct nfs_server
*server
= NFS_SERVER(inode
);
5160 struct page
*pages
[NFS4ACL_MAXPAGES
];
5161 struct nfs_setaclargs arg
= {
5162 .fh
= NFS_FH(inode
),
5166 struct nfs_setaclres res
;
5167 struct rpc_message msg
= {
5168 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETACL
],
5172 unsigned int npages
= DIV_ROUND_UP(buflen
, PAGE_SIZE
);
5175 if (!nfs4_server_supports_acls(server
))
5177 if (npages
> ARRAY_SIZE(pages
))
5179 i
= buf_to_pages_noslab(buf
, buflen
, arg
.acl_pages
);
5182 nfs4_inode_return_delegation(inode
);
5183 ret
= nfs4_call_sync(server
->client
, server
, &msg
, &arg
.seq_args
, &res
.seq_res
, 1);
5186 * Free each page after tx, so the only ref left is
5187 * held by the network stack
5190 put_page(pages
[i
-1]);
5193 * Acl update can result in inode attribute update.
5194 * so mark the attribute cache invalid.
5196 spin_lock(&inode
->i_lock
);
5197 NFS_I(inode
)->cache_validity
|= NFS_INO_INVALID_ATTR
;
5198 spin_unlock(&inode
->i_lock
);
5199 nfs_access_zap_cache(inode
);
5200 nfs_zap_acl_cache(inode
);
5204 static int nfs4_proc_set_acl(struct inode
*inode
, const void *buf
, size_t buflen
)
5206 struct nfs4_exception exception
= { };
5209 err
= __nfs4_proc_set_acl(inode
, buf
, buflen
);
5210 trace_nfs4_set_acl(inode
, err
);
5211 err
= nfs4_handle_exception(NFS_SERVER(inode
), err
,
5213 } while (exception
.retry
);
5217 #ifdef CONFIG_NFS_V4_SECURITY_LABEL
5218 static int _nfs4_get_security_label(struct inode
*inode
, void *buf
,
5221 struct nfs_server
*server
= NFS_SERVER(inode
);
5222 struct nfs_fattr fattr
;
5223 struct nfs4_label label
= {0, 0, buflen
, buf
};
5225 u32 bitmask
[3] = { 0, 0, FATTR4_WORD2_SECURITY_LABEL
};
5226 struct nfs4_getattr_arg arg
= {
5227 .fh
= NFS_FH(inode
),
5230 struct nfs4_getattr_res res
= {
5235 struct rpc_message msg
= {
5236 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GETATTR
],
5242 nfs_fattr_init(&fattr
);
5244 ret
= nfs4_call_sync(server
->client
, server
, &msg
, &arg
.seq_args
, &res
.seq_res
, 0);
5247 if (!(fattr
.valid
& NFS_ATTR_FATTR_V4_SECURITY_LABEL
))
5249 if (buflen
< label
.len
)
5254 static int nfs4_get_security_label(struct inode
*inode
, void *buf
,
5257 struct nfs4_exception exception
= { };
5260 if (!nfs_server_capable(inode
, NFS_CAP_SECURITY_LABEL
))
5264 err
= _nfs4_get_security_label(inode
, buf
, buflen
);
5265 trace_nfs4_get_security_label(inode
, err
);
5266 err
= nfs4_handle_exception(NFS_SERVER(inode
), err
,
5268 } while (exception
.retry
);
5272 static int _nfs4_do_set_security_label(struct inode
*inode
,
5273 struct nfs4_label
*ilabel
,
5274 struct nfs_fattr
*fattr
,
5275 struct nfs4_label
*olabel
)
5278 struct iattr sattr
= {0};
5279 struct nfs_server
*server
= NFS_SERVER(inode
);
5280 const u32 bitmask
[3] = { 0, 0, FATTR4_WORD2_SECURITY_LABEL
};
5281 struct nfs_setattrargs arg
= {
5282 .fh
= NFS_FH(inode
),
5288 struct nfs_setattrres res
= {
5293 struct rpc_message msg
= {
5294 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETATTR
],
5300 nfs4_stateid_copy(&arg
.stateid
, &zero_stateid
);
5302 status
= nfs4_call_sync(server
->client
, server
, &msg
, &arg
.seq_args
, &res
.seq_res
, 1);
5304 dprintk("%s failed: %d\n", __func__
, status
);
5309 static int nfs4_do_set_security_label(struct inode
*inode
,
5310 struct nfs4_label
*ilabel
,
5311 struct nfs_fattr
*fattr
,
5312 struct nfs4_label
*olabel
)
5314 struct nfs4_exception exception
= { };
5318 err
= _nfs4_do_set_security_label(inode
, ilabel
,
5320 trace_nfs4_set_security_label(inode
, err
);
5321 err
= nfs4_handle_exception(NFS_SERVER(inode
), err
,
5323 } while (exception
.retry
);
5328 nfs4_set_security_label(struct inode
*inode
, const void *buf
, size_t buflen
)
5330 struct nfs4_label ilabel
, *olabel
= NULL
;
5331 struct nfs_fattr fattr
;
5332 struct rpc_cred
*cred
;
5335 if (!nfs_server_capable(inode
, NFS_CAP_SECURITY_LABEL
))
5338 nfs_fattr_init(&fattr
);
5342 ilabel
.label
= (char *)buf
;
5343 ilabel
.len
= buflen
;
5345 cred
= rpc_lookup_cred();
5347 return PTR_ERR(cred
);
5349 olabel
= nfs4_label_alloc(NFS_SERVER(inode
), GFP_KERNEL
);
5350 if (IS_ERR(olabel
)) {
5351 status
= -PTR_ERR(olabel
);
5355 status
= nfs4_do_set_security_label(inode
, &ilabel
, &fattr
, olabel
);
5357 nfs_setsecurity(inode
, &fattr
, olabel
);
5359 nfs4_label_free(olabel
);
5364 #endif /* CONFIG_NFS_V4_SECURITY_LABEL */
5367 static void nfs4_init_boot_verifier(const struct nfs_client
*clp
,
5368 nfs4_verifier
*bootverf
)
5372 if (test_bit(NFS4CLNT_PURGE_STATE
, &clp
->cl_state
)) {
5373 /* An impossible timestamp guarantees this value
5374 * will never match a generated boot time. */
5375 verf
[0] = cpu_to_be32(U32_MAX
);
5376 verf
[1] = cpu_to_be32(U32_MAX
);
5378 struct nfs_net
*nn
= net_generic(clp
->cl_net
, nfs_net_id
);
5379 u64 ns
= ktime_to_ns(nn
->boot_time
);
5381 verf
[0] = cpu_to_be32(ns
>> 32);
5382 verf
[1] = cpu_to_be32(ns
);
5384 memcpy(bootverf
->data
, verf
, sizeof(bootverf
->data
));
5388 nfs4_init_nonuniform_client_string(struct nfs_client
*clp
)
5393 if (clp
->cl_owner_id
!= NULL
)
5397 len
= 14 + strlen(clp
->cl_ipaddr
) + 1 +
5398 strlen(rpc_peeraddr2str(clp
->cl_rpcclient
, RPC_DISPLAY_ADDR
)) +
5400 strlen(rpc_peeraddr2str(clp
->cl_rpcclient
, RPC_DISPLAY_PROTO
)) +
5404 if (len
> NFS4_OPAQUE_LIMIT
+ 1)
5408 * Since this string is allocated at mount time, and held until the
5409 * nfs_client is destroyed, we can use GFP_KERNEL here w/o worrying
5410 * about a memory-reclaim deadlock.
5412 str
= kmalloc(len
, GFP_KERNEL
);
5417 scnprintf(str
, len
, "Linux NFSv4.0 %s/%s %s",
5419 rpc_peeraddr2str(clp
->cl_rpcclient
, RPC_DISPLAY_ADDR
),
5420 rpc_peeraddr2str(clp
->cl_rpcclient
, RPC_DISPLAY_PROTO
));
5423 clp
->cl_owner_id
= str
;
5428 nfs4_init_uniquifier_client_string(struct nfs_client
*clp
)
5433 len
= 10 + 10 + 1 + 10 + 1 +
5434 strlen(nfs4_client_id_uniquifier
) + 1 +
5435 strlen(clp
->cl_rpcclient
->cl_nodename
) + 1;
5437 if (len
> NFS4_OPAQUE_LIMIT
+ 1)
5441 * Since this string is allocated at mount time, and held until the
5442 * nfs_client is destroyed, we can use GFP_KERNEL here w/o worrying
5443 * about a memory-reclaim deadlock.
5445 str
= kmalloc(len
, GFP_KERNEL
);
5449 scnprintf(str
, len
, "Linux NFSv%u.%u %s/%s",
5450 clp
->rpc_ops
->version
, clp
->cl_minorversion
,
5451 nfs4_client_id_uniquifier
,
5452 clp
->cl_rpcclient
->cl_nodename
);
5453 clp
->cl_owner_id
= str
;
5458 nfs4_init_uniform_client_string(struct nfs_client
*clp
)
5463 if (clp
->cl_owner_id
!= NULL
)
5466 if (nfs4_client_id_uniquifier
[0] != '\0')
5467 return nfs4_init_uniquifier_client_string(clp
);
5469 len
= 10 + 10 + 1 + 10 + 1 +
5470 strlen(clp
->cl_rpcclient
->cl_nodename
) + 1;
5472 if (len
> NFS4_OPAQUE_LIMIT
+ 1)
5476 * Since this string is allocated at mount time, and held until the
5477 * nfs_client is destroyed, we can use GFP_KERNEL here w/o worrying
5478 * about a memory-reclaim deadlock.
5480 str
= kmalloc(len
, GFP_KERNEL
);
5484 scnprintf(str
, len
, "Linux NFSv%u.%u %s",
5485 clp
->rpc_ops
->version
, clp
->cl_minorversion
,
5486 clp
->cl_rpcclient
->cl_nodename
);
5487 clp
->cl_owner_id
= str
;
5492 * nfs4_callback_up_net() starts only "tcp" and "tcp6" callback
5493 * services. Advertise one based on the address family of the
5497 nfs4_init_callback_netid(const struct nfs_client
*clp
, char *buf
, size_t len
)
5499 if (strchr(clp
->cl_ipaddr
, ':') != NULL
)
5500 return scnprintf(buf
, len
, "tcp6");
5502 return scnprintf(buf
, len
, "tcp");
5505 static void nfs4_setclientid_done(struct rpc_task
*task
, void *calldata
)
5507 struct nfs4_setclientid
*sc
= calldata
;
5509 if (task
->tk_status
== 0)
5510 sc
->sc_cred
= get_rpccred(task
->tk_rqstp
->rq_cred
);
5513 static const struct rpc_call_ops nfs4_setclientid_ops
= {
5514 .rpc_call_done
= nfs4_setclientid_done
,
5518 * nfs4_proc_setclientid - Negotiate client ID
5519 * @clp: state data structure
5520 * @program: RPC program for NFSv4 callback service
5521 * @port: IP port number for NFS4 callback service
5522 * @cred: RPC credential to use for this call
5523 * @res: where to place the result
5525 * Returns zero, a negative errno, or a negative NFS4ERR status code.
5527 int nfs4_proc_setclientid(struct nfs_client
*clp
, u32 program
,
5528 unsigned short port
, struct rpc_cred
*cred
,
5529 struct nfs4_setclientid_res
*res
)
5531 nfs4_verifier sc_verifier
;
5532 struct nfs4_setclientid setclientid
= {
5533 .sc_verifier
= &sc_verifier
,
5537 struct rpc_message msg
= {
5538 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETCLIENTID
],
5539 .rpc_argp
= &setclientid
,
5543 struct rpc_task
*task
;
5544 struct rpc_task_setup task_setup_data
= {
5545 .rpc_client
= clp
->cl_rpcclient
,
5546 .rpc_message
= &msg
,
5547 .callback_ops
= &nfs4_setclientid_ops
,
5548 .callback_data
= &setclientid
,
5549 .flags
= RPC_TASK_TIMEOUT
,
5553 /* nfs_client_id4 */
5554 nfs4_init_boot_verifier(clp
, &sc_verifier
);
5556 if (test_bit(NFS_CS_MIGRATION
, &clp
->cl_flags
))
5557 status
= nfs4_init_uniform_client_string(clp
);
5559 status
= nfs4_init_nonuniform_client_string(clp
);
5565 setclientid
.sc_netid_len
=
5566 nfs4_init_callback_netid(clp
,
5567 setclientid
.sc_netid
,
5568 sizeof(setclientid
.sc_netid
));
5569 setclientid
.sc_uaddr_len
= scnprintf(setclientid
.sc_uaddr
,
5570 sizeof(setclientid
.sc_uaddr
), "%s.%u.%u",
5571 clp
->cl_ipaddr
, port
>> 8, port
& 255);
5573 dprintk("NFS call setclientid auth=%s, '%s'\n",
5574 clp
->cl_rpcclient
->cl_auth
->au_ops
->au_name
,
5576 task
= rpc_run_task(&task_setup_data
);
5578 status
= PTR_ERR(task
);
5581 status
= task
->tk_status
;
5582 if (setclientid
.sc_cred
) {
5583 clp
->cl_acceptor
= rpcauth_stringify_acceptor(setclientid
.sc_cred
);
5584 put_rpccred(setclientid
.sc_cred
);
5588 trace_nfs4_setclientid(clp
, status
);
5589 dprintk("NFS reply setclientid: %d\n", status
);
5594 * nfs4_proc_setclientid_confirm - Confirm client ID
5595 * @clp: state data structure
5596 * @res: result of a previous SETCLIENTID
5597 * @cred: RPC credential to use for this call
5599 * Returns zero, a negative errno, or a negative NFS4ERR status code.
5601 int nfs4_proc_setclientid_confirm(struct nfs_client
*clp
,
5602 struct nfs4_setclientid_res
*arg
,
5603 struct rpc_cred
*cred
)
5605 struct rpc_message msg
= {
5606 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETCLIENTID_CONFIRM
],
5612 dprintk("NFS call setclientid_confirm auth=%s, (client ID %llx)\n",
5613 clp
->cl_rpcclient
->cl_auth
->au_ops
->au_name
,
5615 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
5616 trace_nfs4_setclientid_confirm(clp
, status
);
5617 dprintk("NFS reply setclientid_confirm: %d\n", status
);
5621 struct nfs4_delegreturndata
{
5622 struct nfs4_delegreturnargs args
;
5623 struct nfs4_delegreturnres res
;
5625 nfs4_stateid stateid
;
5626 unsigned long timestamp
;
5628 struct nfs4_layoutreturn_args arg
;
5629 struct nfs4_layoutreturn_res res
;
5630 struct nfs4_xdr_opaque_data ld_private
;
5634 struct nfs_fattr fattr
;
5636 struct inode
*inode
;
5639 static void nfs4_delegreturn_done(struct rpc_task
*task
, void *calldata
)
5641 struct nfs4_delegreturndata
*data
= calldata
;
5643 if (!nfs4_sequence_done(task
, &data
->res
.seq_res
))
5646 trace_nfs4_delegreturn_exit(&data
->args
, &data
->res
, task
->tk_status
);
5648 /* Handle Layoutreturn errors */
5649 if (data
->args
.lr_args
&& task
->tk_status
!= 0) {
5650 switch(data
->res
.lr_ret
) {
5652 data
->res
.lr_ret
= -NFS4ERR_NOMATCHING_LAYOUT
;
5655 data
->args
.lr_args
= NULL
;
5656 data
->res
.lr_res
= NULL
;
5658 case -NFS4ERR_ADMIN_REVOKED
:
5659 case -NFS4ERR_DELEG_REVOKED
:
5660 case -NFS4ERR_EXPIRED
:
5661 case -NFS4ERR_BAD_STATEID
:
5662 case -NFS4ERR_OLD_STATEID
:
5663 case -NFS4ERR_UNKNOWN_LAYOUTTYPE
:
5664 case -NFS4ERR_WRONG_CRED
:
5665 data
->args
.lr_args
= NULL
;
5666 data
->res
.lr_res
= NULL
;
5667 data
->res
.lr_ret
= 0;
5668 rpc_restart_call_prepare(task
);
5673 switch (task
->tk_status
) {
5675 renew_lease(data
->res
.server
, data
->timestamp
);
5677 case -NFS4ERR_ADMIN_REVOKED
:
5678 case -NFS4ERR_DELEG_REVOKED
:
5679 case -NFS4ERR_EXPIRED
:
5680 nfs4_free_revoked_stateid(data
->res
.server
,
5682 task
->tk_msg
.rpc_cred
);
5683 case -NFS4ERR_BAD_STATEID
:
5684 case -NFS4ERR_OLD_STATEID
:
5685 case -NFS4ERR_STALE_STATEID
:
5686 task
->tk_status
= 0;
5689 if (nfs4_async_handle_error(task
, data
->res
.server
,
5690 NULL
, NULL
) == -EAGAIN
) {
5691 rpc_restart_call_prepare(task
);
5695 data
->rpc_status
= task
->tk_status
;
5698 static void nfs4_delegreturn_release(void *calldata
)
5700 struct nfs4_delegreturndata
*data
= calldata
;
5701 struct inode
*inode
= data
->inode
;
5705 pnfs_roc_release(&data
->lr
.arg
, &data
->lr
.res
,
5707 nfs_post_op_update_inode_force_wcc(inode
, &data
->fattr
);
5708 nfs_iput_and_deactive(inode
);
5713 static void nfs4_delegreturn_prepare(struct rpc_task
*task
, void *data
)
5715 struct nfs4_delegreturndata
*d_data
;
5717 d_data
= (struct nfs4_delegreturndata
*)data
;
5719 if (!d_data
->lr
.roc
&& nfs4_wait_on_layoutreturn(d_data
->inode
, task
))
5722 nfs4_setup_sequence(d_data
->res
.server
,
5723 &d_data
->args
.seq_args
,
5724 &d_data
->res
.seq_res
,
5728 static const struct rpc_call_ops nfs4_delegreturn_ops
= {
5729 .rpc_call_prepare
= nfs4_delegreturn_prepare
,
5730 .rpc_call_done
= nfs4_delegreturn_done
,
5731 .rpc_release
= nfs4_delegreturn_release
,
5734 static int _nfs4_proc_delegreturn(struct inode
*inode
, struct rpc_cred
*cred
, const nfs4_stateid
*stateid
, int issync
)
5736 struct nfs4_delegreturndata
*data
;
5737 struct nfs_server
*server
= NFS_SERVER(inode
);
5738 struct rpc_task
*task
;
5739 struct rpc_message msg
= {
5740 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_DELEGRETURN
],
5743 struct rpc_task_setup task_setup_data
= {
5744 .rpc_client
= server
->client
,
5745 .rpc_message
= &msg
,
5746 .callback_ops
= &nfs4_delegreturn_ops
,
5747 .flags
= RPC_TASK_ASYNC
,
5751 data
= kzalloc(sizeof(*data
), GFP_NOFS
);
5754 nfs4_init_sequence(&data
->args
.seq_args
, &data
->res
.seq_res
, 1);
5756 nfs4_state_protect(server
->nfs_client
,
5757 NFS_SP4_MACH_CRED_CLEANUP
,
5758 &task_setup_data
.rpc_client
, &msg
);
5760 data
->args
.fhandle
= &data
->fh
;
5761 data
->args
.stateid
= &data
->stateid
;
5762 data
->args
.bitmask
= server
->cache_consistency_bitmask
;
5763 nfs_copy_fh(&data
->fh
, NFS_FH(inode
));
5764 nfs4_stateid_copy(&data
->stateid
, stateid
);
5765 data
->res
.fattr
= &data
->fattr
;
5766 data
->res
.server
= server
;
5767 data
->res
.lr_ret
= -NFS4ERR_NOMATCHING_LAYOUT
;
5768 data
->lr
.arg
.ld_private
= &data
->lr
.ld_private
;
5769 nfs_fattr_init(data
->res
.fattr
);
5770 data
->timestamp
= jiffies
;
5771 data
->rpc_status
= 0;
5772 data
->lr
.roc
= pnfs_roc(inode
, &data
->lr
.arg
, &data
->lr
.res
, cred
);
5773 data
->inode
= nfs_igrab_and_active(inode
);
5776 data
->args
.lr_args
= &data
->lr
.arg
;
5777 data
->res
.lr_res
= &data
->lr
.res
;
5779 } else if (data
->lr
.roc
) {
5780 pnfs_roc_release(&data
->lr
.arg
, &data
->lr
.res
, 0);
5781 data
->lr
.roc
= false;
5784 task_setup_data
.callback_data
= data
;
5785 msg
.rpc_argp
= &data
->args
;
5786 msg
.rpc_resp
= &data
->res
;
5787 task
= rpc_run_task(&task_setup_data
);
5789 return PTR_ERR(task
);
5792 status
= nfs4_wait_for_completion_rpc_task(task
);
5795 status
= data
->rpc_status
;
5801 int nfs4_proc_delegreturn(struct inode
*inode
, struct rpc_cred
*cred
, const nfs4_stateid
*stateid
, int issync
)
5803 struct nfs_server
*server
= NFS_SERVER(inode
);
5804 struct nfs4_exception exception
= { };
5807 err
= _nfs4_proc_delegreturn(inode
, cred
, stateid
, issync
);
5808 trace_nfs4_delegreturn(inode
, stateid
, err
);
5810 case -NFS4ERR_STALE_STATEID
:
5811 case -NFS4ERR_EXPIRED
:
5815 err
= nfs4_handle_exception(server
, err
, &exception
);
5816 } while (exception
.retry
);
5820 static int _nfs4_proc_getlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
5822 struct inode
*inode
= state
->inode
;
5823 struct nfs_server
*server
= NFS_SERVER(inode
);
5824 struct nfs_client
*clp
= server
->nfs_client
;
5825 struct nfs_lockt_args arg
= {
5826 .fh
= NFS_FH(inode
),
5829 struct nfs_lockt_res res
= {
5832 struct rpc_message msg
= {
5833 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOCKT
],
5836 .rpc_cred
= state
->owner
->so_cred
,
5838 struct nfs4_lock_state
*lsp
;
5841 arg
.lock_owner
.clientid
= clp
->cl_clientid
;
5842 status
= nfs4_set_lock_state(state
, request
);
5845 lsp
= request
->fl_u
.nfs4_fl
.owner
;
5846 arg
.lock_owner
.id
= lsp
->ls_seqid
.owner_id
;
5847 arg
.lock_owner
.s_dev
= server
->s_dev
;
5848 status
= nfs4_call_sync(server
->client
, server
, &msg
, &arg
.seq_args
, &res
.seq_res
, 1);
5851 request
->fl_type
= F_UNLCK
;
5853 case -NFS4ERR_DENIED
:
5856 request
->fl_ops
->fl_release_private(request
);
5857 request
->fl_ops
= NULL
;
5862 static int nfs4_proc_getlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
5864 struct nfs4_exception exception
= { };
5868 err
= _nfs4_proc_getlk(state
, cmd
, request
);
5869 trace_nfs4_get_lock(request
, state
, cmd
, err
);
5870 err
= nfs4_handle_exception(NFS_SERVER(state
->inode
), err
,
5872 } while (exception
.retry
);
5876 struct nfs4_unlockdata
{
5877 struct nfs_locku_args arg
;
5878 struct nfs_locku_res res
;
5879 struct nfs4_lock_state
*lsp
;
5880 struct nfs_open_context
*ctx
;
5881 struct file_lock fl
;
5882 struct nfs_server
*server
;
5883 unsigned long timestamp
;
5886 static struct nfs4_unlockdata
*nfs4_alloc_unlockdata(struct file_lock
*fl
,
5887 struct nfs_open_context
*ctx
,
5888 struct nfs4_lock_state
*lsp
,
5889 struct nfs_seqid
*seqid
)
5891 struct nfs4_unlockdata
*p
;
5892 struct inode
*inode
= lsp
->ls_state
->inode
;
5894 p
= kzalloc(sizeof(*p
), GFP_NOFS
);
5897 p
->arg
.fh
= NFS_FH(inode
);
5899 p
->arg
.seqid
= seqid
;
5900 p
->res
.seqid
= seqid
;
5902 atomic_inc(&lsp
->ls_count
);
5903 /* Ensure we don't close file until we're done freeing locks! */
5904 p
->ctx
= get_nfs_open_context(ctx
);
5905 memcpy(&p
->fl
, fl
, sizeof(p
->fl
));
5906 p
->server
= NFS_SERVER(inode
);
5910 static void nfs4_locku_release_calldata(void *data
)
5912 struct nfs4_unlockdata
*calldata
= data
;
5913 nfs_free_seqid(calldata
->arg
.seqid
);
5914 nfs4_put_lock_state(calldata
->lsp
);
5915 put_nfs_open_context(calldata
->ctx
);
5919 static void nfs4_locku_done(struct rpc_task
*task
, void *data
)
5921 struct nfs4_unlockdata
*calldata
= data
;
5923 if (!nfs4_sequence_done(task
, &calldata
->res
.seq_res
))
5925 switch (task
->tk_status
) {
5927 renew_lease(calldata
->server
, calldata
->timestamp
);
5928 locks_lock_inode_wait(calldata
->lsp
->ls_state
->inode
, &calldata
->fl
);
5929 if (nfs4_update_lock_stateid(calldata
->lsp
,
5930 &calldata
->res
.stateid
))
5932 case -NFS4ERR_ADMIN_REVOKED
:
5933 case -NFS4ERR_EXPIRED
:
5934 nfs4_free_revoked_stateid(calldata
->server
,
5935 &calldata
->arg
.stateid
,
5936 task
->tk_msg
.rpc_cred
);
5937 case -NFS4ERR_BAD_STATEID
:
5938 case -NFS4ERR_OLD_STATEID
:
5939 case -NFS4ERR_STALE_STATEID
:
5940 if (!nfs4_stateid_match(&calldata
->arg
.stateid
,
5941 &calldata
->lsp
->ls_stateid
))
5942 rpc_restart_call_prepare(task
);
5945 if (nfs4_async_handle_error(task
, calldata
->server
,
5946 NULL
, NULL
) == -EAGAIN
)
5947 rpc_restart_call_prepare(task
);
5949 nfs_release_seqid(calldata
->arg
.seqid
);
5952 static void nfs4_locku_prepare(struct rpc_task
*task
, void *data
)
5954 struct nfs4_unlockdata
*calldata
= data
;
5956 if (nfs_wait_on_sequence(calldata
->arg
.seqid
, task
) != 0)
5958 nfs4_stateid_copy(&calldata
->arg
.stateid
, &calldata
->lsp
->ls_stateid
);
5959 if (test_bit(NFS_LOCK_INITIALIZED
, &calldata
->lsp
->ls_flags
) == 0) {
5960 /* Note: exit _without_ running nfs4_locku_done */
5963 calldata
->timestamp
= jiffies
;
5964 if (nfs4_setup_sequence(calldata
->server
,
5965 &calldata
->arg
.seq_args
,
5966 &calldata
->res
.seq_res
,
5968 nfs_release_seqid(calldata
->arg
.seqid
);
5971 task
->tk_action
= NULL
;
5973 nfs4_sequence_done(task
, &calldata
->res
.seq_res
);
5976 static const struct rpc_call_ops nfs4_locku_ops
= {
5977 .rpc_call_prepare
= nfs4_locku_prepare
,
5978 .rpc_call_done
= nfs4_locku_done
,
5979 .rpc_release
= nfs4_locku_release_calldata
,
5982 static struct rpc_task
*nfs4_do_unlck(struct file_lock
*fl
,
5983 struct nfs_open_context
*ctx
,
5984 struct nfs4_lock_state
*lsp
,
5985 struct nfs_seqid
*seqid
)
5987 struct nfs4_unlockdata
*data
;
5988 struct rpc_message msg
= {
5989 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOCKU
],
5990 .rpc_cred
= ctx
->cred
,
5992 struct rpc_task_setup task_setup_data
= {
5993 .rpc_client
= NFS_CLIENT(lsp
->ls_state
->inode
),
5994 .rpc_message
= &msg
,
5995 .callback_ops
= &nfs4_locku_ops
,
5996 .workqueue
= nfsiod_workqueue
,
5997 .flags
= RPC_TASK_ASYNC
,
6000 nfs4_state_protect(NFS_SERVER(lsp
->ls_state
->inode
)->nfs_client
,
6001 NFS_SP4_MACH_CRED_CLEANUP
, &task_setup_data
.rpc_client
, &msg
);
6003 /* Ensure this is an unlock - when canceling a lock, the
6004 * canceled lock is passed in, and it won't be an unlock.
6006 fl
->fl_type
= F_UNLCK
;
6008 data
= nfs4_alloc_unlockdata(fl
, ctx
, lsp
, seqid
);
6010 nfs_free_seqid(seqid
);
6011 return ERR_PTR(-ENOMEM
);
6014 nfs4_init_sequence(&data
->arg
.seq_args
, &data
->res
.seq_res
, 1);
6015 msg
.rpc_argp
= &data
->arg
;
6016 msg
.rpc_resp
= &data
->res
;
6017 task_setup_data
.callback_data
= data
;
6018 return rpc_run_task(&task_setup_data
);
6021 static int nfs4_proc_unlck(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
6023 struct inode
*inode
= state
->inode
;
6024 struct nfs4_state_owner
*sp
= state
->owner
;
6025 struct nfs_inode
*nfsi
= NFS_I(inode
);
6026 struct nfs_seqid
*seqid
;
6027 struct nfs4_lock_state
*lsp
;
6028 struct rpc_task
*task
;
6029 struct nfs_seqid
*(*alloc_seqid
)(struct nfs_seqid_counter
*, gfp_t
);
6031 unsigned char fl_flags
= request
->fl_flags
;
6033 status
= nfs4_set_lock_state(state
, request
);
6034 /* Unlock _before_ we do the RPC call */
6035 request
->fl_flags
|= FL_EXISTS
;
6036 /* Exclude nfs_delegation_claim_locks() */
6037 mutex_lock(&sp
->so_delegreturn_mutex
);
6038 /* Exclude nfs4_reclaim_open_stateid() - note nesting! */
6039 down_read(&nfsi
->rwsem
);
6040 if (locks_lock_inode_wait(inode
, request
) == -ENOENT
) {
6041 up_read(&nfsi
->rwsem
);
6042 mutex_unlock(&sp
->so_delegreturn_mutex
);
6045 up_read(&nfsi
->rwsem
);
6046 mutex_unlock(&sp
->so_delegreturn_mutex
);
6049 /* Is this a delegated lock? */
6050 lsp
= request
->fl_u
.nfs4_fl
.owner
;
6051 if (test_bit(NFS_LOCK_INITIALIZED
, &lsp
->ls_flags
) == 0)
6053 alloc_seqid
= NFS_SERVER(inode
)->nfs_client
->cl_mvops
->alloc_seqid
;
6054 seqid
= alloc_seqid(&lsp
->ls_seqid
, GFP_KERNEL
);
6058 task
= nfs4_do_unlck(request
, nfs_file_open_context(request
->fl_file
), lsp
, seqid
);
6059 status
= PTR_ERR(task
);
6062 status
= nfs4_wait_for_completion_rpc_task(task
);
6065 request
->fl_flags
= fl_flags
;
6066 trace_nfs4_unlock(request
, state
, F_SETLK
, status
);
6070 struct nfs4_lockdata
{
6071 struct nfs_lock_args arg
;
6072 struct nfs_lock_res res
;
6073 struct nfs4_lock_state
*lsp
;
6074 struct nfs_open_context
*ctx
;
6075 struct file_lock fl
;
6076 unsigned long timestamp
;
6079 struct nfs_server
*server
;
6082 static struct nfs4_lockdata
*nfs4_alloc_lockdata(struct file_lock
*fl
,
6083 struct nfs_open_context
*ctx
, struct nfs4_lock_state
*lsp
,
6086 struct nfs4_lockdata
*p
;
6087 struct inode
*inode
= lsp
->ls_state
->inode
;
6088 struct nfs_server
*server
= NFS_SERVER(inode
);
6089 struct nfs_seqid
*(*alloc_seqid
)(struct nfs_seqid_counter
*, gfp_t
);
6091 p
= kzalloc(sizeof(*p
), gfp_mask
);
6095 p
->arg
.fh
= NFS_FH(inode
);
6097 p
->arg
.open_seqid
= nfs_alloc_seqid(&lsp
->ls_state
->owner
->so_seqid
, gfp_mask
);
6098 if (IS_ERR(p
->arg
.open_seqid
))
6100 alloc_seqid
= server
->nfs_client
->cl_mvops
->alloc_seqid
;
6101 p
->arg
.lock_seqid
= alloc_seqid(&lsp
->ls_seqid
, gfp_mask
);
6102 if (IS_ERR(p
->arg
.lock_seqid
))
6103 goto out_free_seqid
;
6104 p
->arg
.lock_owner
.clientid
= server
->nfs_client
->cl_clientid
;
6105 p
->arg
.lock_owner
.id
= lsp
->ls_seqid
.owner_id
;
6106 p
->arg
.lock_owner
.s_dev
= server
->s_dev
;
6107 p
->res
.lock_seqid
= p
->arg
.lock_seqid
;
6110 atomic_inc(&lsp
->ls_count
);
6111 p
->ctx
= get_nfs_open_context(ctx
);
6112 get_file(fl
->fl_file
);
6113 memcpy(&p
->fl
, fl
, sizeof(p
->fl
));
6116 nfs_free_seqid(p
->arg
.open_seqid
);
6122 static void nfs4_lock_prepare(struct rpc_task
*task
, void *calldata
)
6124 struct nfs4_lockdata
*data
= calldata
;
6125 struct nfs4_state
*state
= data
->lsp
->ls_state
;
6127 dprintk("%s: begin!\n", __func__
);
6128 if (nfs_wait_on_sequence(data
->arg
.lock_seqid
, task
) != 0)
6130 /* Do we need to do an open_to_lock_owner? */
6131 if (!test_bit(NFS_LOCK_INITIALIZED
, &data
->lsp
->ls_flags
)) {
6132 if (nfs_wait_on_sequence(data
->arg
.open_seqid
, task
) != 0) {
6133 goto out_release_lock_seqid
;
6135 nfs4_stateid_copy(&data
->arg
.open_stateid
,
6136 &state
->open_stateid
);
6137 data
->arg
.new_lock_owner
= 1;
6138 data
->res
.open_seqid
= data
->arg
.open_seqid
;
6140 data
->arg
.new_lock_owner
= 0;
6141 nfs4_stateid_copy(&data
->arg
.lock_stateid
,
6142 &data
->lsp
->ls_stateid
);
6144 if (!nfs4_valid_open_stateid(state
)) {
6145 data
->rpc_status
= -EBADF
;
6146 task
->tk_action
= NULL
;
6147 goto out_release_open_seqid
;
6149 data
->timestamp
= jiffies
;
6150 if (nfs4_setup_sequence(data
->server
,
6151 &data
->arg
.seq_args
,
6155 out_release_open_seqid
:
6156 nfs_release_seqid(data
->arg
.open_seqid
);
6157 out_release_lock_seqid
:
6158 nfs_release_seqid(data
->arg
.lock_seqid
);
6160 nfs4_sequence_done(task
, &data
->res
.seq_res
);
6161 dprintk("%s: done!, ret = %d\n", __func__
, data
->rpc_status
);
6164 static void nfs4_lock_done(struct rpc_task
*task
, void *calldata
)
6166 struct nfs4_lockdata
*data
= calldata
;
6167 struct nfs4_lock_state
*lsp
= data
->lsp
;
6169 dprintk("%s: begin!\n", __func__
);
6171 if (!nfs4_sequence_done(task
, &data
->res
.seq_res
))
6174 data
->rpc_status
= task
->tk_status
;
6175 switch (task
->tk_status
) {
6177 renew_lease(NFS_SERVER(d_inode(data
->ctx
->dentry
)),
6179 if (data
->arg
.new_lock
) {
6180 data
->fl
.fl_flags
&= ~(FL_SLEEP
| FL_ACCESS
);
6181 if (locks_lock_inode_wait(lsp
->ls_state
->inode
, &data
->fl
) < 0) {
6182 rpc_restart_call_prepare(task
);
6186 if (data
->arg
.new_lock_owner
!= 0) {
6187 nfs_confirm_seqid(&lsp
->ls_seqid
, 0);
6188 nfs4_stateid_copy(&lsp
->ls_stateid
, &data
->res
.stateid
);
6189 set_bit(NFS_LOCK_INITIALIZED
, &lsp
->ls_flags
);
6190 } else if (!nfs4_update_lock_stateid(lsp
, &data
->res
.stateid
))
6191 rpc_restart_call_prepare(task
);
6193 case -NFS4ERR_BAD_STATEID
:
6194 case -NFS4ERR_OLD_STATEID
:
6195 case -NFS4ERR_STALE_STATEID
:
6196 case -NFS4ERR_EXPIRED
:
6197 if (data
->arg
.new_lock_owner
!= 0) {
6198 if (!nfs4_stateid_match(&data
->arg
.open_stateid
,
6199 &lsp
->ls_state
->open_stateid
))
6200 rpc_restart_call_prepare(task
);
6201 } else if (!nfs4_stateid_match(&data
->arg
.lock_stateid
,
6203 rpc_restart_call_prepare(task
);
6205 dprintk("%s: done, ret = %d!\n", __func__
, data
->rpc_status
);
6208 static void nfs4_lock_release(void *calldata
)
6210 struct nfs4_lockdata
*data
= calldata
;
6212 dprintk("%s: begin!\n", __func__
);
6213 nfs_free_seqid(data
->arg
.open_seqid
);
6214 if (data
->cancelled
!= 0) {
6215 struct rpc_task
*task
;
6216 task
= nfs4_do_unlck(&data
->fl
, data
->ctx
, data
->lsp
,
6217 data
->arg
.lock_seqid
);
6219 rpc_put_task_async(task
);
6220 dprintk("%s: cancelling lock!\n", __func__
);
6222 nfs_free_seqid(data
->arg
.lock_seqid
);
6223 nfs4_put_lock_state(data
->lsp
);
6224 put_nfs_open_context(data
->ctx
);
6225 fput(data
->fl
.fl_file
);
6227 dprintk("%s: done!\n", __func__
);
6230 static const struct rpc_call_ops nfs4_lock_ops
= {
6231 .rpc_call_prepare
= nfs4_lock_prepare
,
6232 .rpc_call_done
= nfs4_lock_done
,
6233 .rpc_release
= nfs4_lock_release
,
6236 static void nfs4_handle_setlk_error(struct nfs_server
*server
, struct nfs4_lock_state
*lsp
, int new_lock_owner
, int error
)
6239 case -NFS4ERR_ADMIN_REVOKED
:
6240 case -NFS4ERR_EXPIRED
:
6241 case -NFS4ERR_BAD_STATEID
:
6242 lsp
->ls_seqid
.flags
&= ~NFS_SEQID_CONFIRMED
;
6243 if (new_lock_owner
!= 0 ||
6244 test_bit(NFS_LOCK_INITIALIZED
, &lsp
->ls_flags
) != 0)
6245 nfs4_schedule_stateid_recovery(server
, lsp
->ls_state
);
6247 case -NFS4ERR_STALE_STATEID
:
6248 lsp
->ls_seqid
.flags
&= ~NFS_SEQID_CONFIRMED
;
6249 nfs4_schedule_lease_recovery(server
->nfs_client
);
6253 static int _nfs4_do_setlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*fl
, int recovery_type
)
6255 struct nfs4_lockdata
*data
;
6256 struct rpc_task
*task
;
6257 struct rpc_message msg
= {
6258 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOCK
],
6259 .rpc_cred
= state
->owner
->so_cred
,
6261 struct rpc_task_setup task_setup_data
= {
6262 .rpc_client
= NFS_CLIENT(state
->inode
),
6263 .rpc_message
= &msg
,
6264 .callback_ops
= &nfs4_lock_ops
,
6265 .workqueue
= nfsiod_workqueue
,
6266 .flags
= RPC_TASK_ASYNC
,
6270 dprintk("%s: begin!\n", __func__
);
6271 data
= nfs4_alloc_lockdata(fl
, nfs_file_open_context(fl
->fl_file
),
6272 fl
->fl_u
.nfs4_fl
.owner
,
6273 recovery_type
== NFS_LOCK_NEW
? GFP_KERNEL
: GFP_NOFS
);
6277 data
->arg
.block
= 1;
6278 nfs4_init_sequence(&data
->arg
.seq_args
, &data
->res
.seq_res
, 1);
6279 msg
.rpc_argp
= &data
->arg
;
6280 msg
.rpc_resp
= &data
->res
;
6281 task_setup_data
.callback_data
= data
;
6282 if (recovery_type
> NFS_LOCK_NEW
) {
6283 if (recovery_type
== NFS_LOCK_RECLAIM
)
6284 data
->arg
.reclaim
= NFS_LOCK_RECLAIM
;
6285 nfs4_set_sequence_privileged(&data
->arg
.seq_args
);
6287 data
->arg
.new_lock
= 1;
6288 task
= rpc_run_task(&task_setup_data
);
6290 return PTR_ERR(task
);
6291 ret
= nfs4_wait_for_completion_rpc_task(task
);
6293 ret
= data
->rpc_status
;
6295 nfs4_handle_setlk_error(data
->server
, data
->lsp
,
6296 data
->arg
.new_lock_owner
, ret
);
6298 data
->cancelled
= 1;
6300 dprintk("%s: done, ret = %d!\n", __func__
, ret
);
6301 trace_nfs4_set_lock(fl
, state
, &data
->res
.stateid
, cmd
, ret
);
6305 static int nfs4_lock_reclaim(struct nfs4_state
*state
, struct file_lock
*request
)
6307 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
6308 struct nfs4_exception exception
= {
6309 .inode
= state
->inode
,
6314 /* Cache the lock if possible... */
6315 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) != 0)
6317 err
= _nfs4_do_setlk(state
, F_SETLK
, request
, NFS_LOCK_RECLAIM
);
6318 if (err
!= -NFS4ERR_DELAY
)
6320 nfs4_handle_exception(server
, err
, &exception
);
6321 } while (exception
.retry
);
6325 static int nfs4_lock_expired(struct nfs4_state
*state
, struct file_lock
*request
)
6327 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
6328 struct nfs4_exception exception
= {
6329 .inode
= state
->inode
,
6333 err
= nfs4_set_lock_state(state
, request
);
6336 if (!recover_lost_locks
) {
6337 set_bit(NFS_LOCK_LOST
, &request
->fl_u
.nfs4_fl
.owner
->ls_flags
);
6341 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) != 0)
6343 err
= _nfs4_do_setlk(state
, F_SETLK
, request
, NFS_LOCK_EXPIRED
);
6347 case -NFS4ERR_GRACE
:
6348 case -NFS4ERR_DELAY
:
6349 nfs4_handle_exception(server
, err
, &exception
);
6352 } while (exception
.retry
);
6357 #if defined(CONFIG_NFS_V4_1)
6358 static int nfs41_lock_expired(struct nfs4_state
*state
, struct file_lock
*request
)
6360 struct nfs4_lock_state
*lsp
;
6363 status
= nfs4_set_lock_state(state
, request
);
6366 lsp
= request
->fl_u
.nfs4_fl
.owner
;
6367 if (test_bit(NFS_LOCK_INITIALIZED
, &lsp
->ls_flags
) ||
6368 test_bit(NFS_LOCK_LOST
, &lsp
->ls_flags
))
6370 status
= nfs4_lock_expired(state
, request
);
6375 static int _nfs4_proc_setlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
6377 struct nfs_inode
*nfsi
= NFS_I(state
->inode
);
6378 struct nfs4_state_owner
*sp
= state
->owner
;
6379 unsigned char fl_flags
= request
->fl_flags
;
6382 request
->fl_flags
|= FL_ACCESS
;
6383 status
= locks_lock_inode_wait(state
->inode
, request
);
6386 mutex_lock(&sp
->so_delegreturn_mutex
);
6387 down_read(&nfsi
->rwsem
);
6388 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
)) {
6389 /* Yes: cache locks! */
6390 /* ...but avoid races with delegation recall... */
6391 request
->fl_flags
= fl_flags
& ~FL_SLEEP
;
6392 status
= locks_lock_inode_wait(state
->inode
, request
);
6393 up_read(&nfsi
->rwsem
);
6394 mutex_unlock(&sp
->so_delegreturn_mutex
);
6397 up_read(&nfsi
->rwsem
);
6398 mutex_unlock(&sp
->so_delegreturn_mutex
);
6399 status
= _nfs4_do_setlk(state
, cmd
, request
, NFS_LOCK_NEW
);
6401 request
->fl_flags
= fl_flags
;
6405 static int nfs4_proc_setlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
6407 struct nfs4_exception exception
= {
6409 .inode
= state
->inode
,
6414 err
= _nfs4_proc_setlk(state
, cmd
, request
);
6415 if (err
== -NFS4ERR_DENIED
)
6417 err
= nfs4_handle_exception(NFS_SERVER(state
->inode
),
6419 } while (exception
.retry
);
6423 #define NFS4_LOCK_MINTIMEOUT (1 * HZ)
6424 #define NFS4_LOCK_MAXTIMEOUT (30 * HZ)
6427 nfs4_retry_setlk_simple(struct nfs4_state
*state
, int cmd
,
6428 struct file_lock
*request
)
6430 int status
= -ERESTARTSYS
;
6431 unsigned long timeout
= NFS4_LOCK_MINTIMEOUT
;
6433 while(!signalled()) {
6434 status
= nfs4_proc_setlk(state
, cmd
, request
);
6435 if ((status
!= -EAGAIN
) || IS_SETLK(cmd
))
6437 freezable_schedule_timeout_interruptible(timeout
);
6439 timeout
= min_t(unsigned long, NFS4_LOCK_MAXTIMEOUT
, timeout
);
6440 status
= -ERESTARTSYS
;
6445 #ifdef CONFIG_NFS_V4_1
6446 struct nfs4_lock_waiter
{
6447 struct task_struct
*task
;
6448 struct inode
*inode
;
6449 struct nfs_lowner
*owner
;
6454 nfs4_wake_lock_waiter(wait_queue_t
*wait
, unsigned int mode
, int flags
, void *key
)
6457 struct cb_notify_lock_args
*cbnl
= key
;
6458 struct nfs4_lock_waiter
*waiter
= wait
->private;
6459 struct nfs_lowner
*lowner
= &cbnl
->cbnl_owner
,
6460 *wowner
= waiter
->owner
;
6462 /* Only wake if the callback was for the same owner */
6463 if (lowner
->clientid
!= wowner
->clientid
||
6464 lowner
->id
!= wowner
->id
||
6465 lowner
->s_dev
!= wowner
->s_dev
)
6468 /* Make sure it's for the right inode */
6469 if (nfs_compare_fh(NFS_FH(waiter
->inode
), &cbnl
->cbnl_fh
))
6472 waiter
->notified
= true;
6474 /* override "private" so we can use default_wake_function */
6475 wait
->private = waiter
->task
;
6476 ret
= autoremove_wake_function(wait
, mode
, flags
, key
);
6477 wait
->private = waiter
;
6482 nfs4_retry_setlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
6484 int status
= -ERESTARTSYS
;
6485 unsigned long flags
;
6486 struct nfs4_lock_state
*lsp
= request
->fl_u
.nfs4_fl
.owner
;
6487 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
6488 struct nfs_client
*clp
= server
->nfs_client
;
6489 wait_queue_head_t
*q
= &clp
->cl_lock_waitq
;
6490 struct nfs_lowner owner
= { .clientid
= clp
->cl_clientid
,
6491 .id
= lsp
->ls_seqid
.owner_id
,
6492 .s_dev
= server
->s_dev
};
6493 struct nfs4_lock_waiter waiter
= { .task
= current
,
6494 .inode
= state
->inode
,
6496 .notified
= false };
6499 /* Don't bother with waitqueue if we don't expect a callback */
6500 if (!test_bit(NFS_STATE_MAY_NOTIFY_LOCK
, &state
->flags
))
6501 return nfs4_retry_setlk_simple(state
, cmd
, request
);
6504 wait
.private = &waiter
;
6505 wait
.func
= nfs4_wake_lock_waiter
;
6506 add_wait_queue(q
, &wait
);
6508 while(!signalled()) {
6509 status
= nfs4_proc_setlk(state
, cmd
, request
);
6510 if ((status
!= -EAGAIN
) || IS_SETLK(cmd
))
6513 status
= -ERESTARTSYS
;
6514 spin_lock_irqsave(&q
->lock
, flags
);
6515 if (waiter
.notified
) {
6516 spin_unlock_irqrestore(&q
->lock
, flags
);
6519 set_current_state(TASK_INTERRUPTIBLE
);
6520 spin_unlock_irqrestore(&q
->lock
, flags
);
6522 freezable_schedule_timeout_interruptible(NFS4_LOCK_MAXTIMEOUT
);
6525 finish_wait(q
, &wait
);
6528 #else /* !CONFIG_NFS_V4_1 */
6530 nfs4_retry_setlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
6532 return nfs4_retry_setlk_simple(state
, cmd
, request
);
6537 nfs4_proc_lock(struct file
*filp
, int cmd
, struct file_lock
*request
)
6539 struct nfs_open_context
*ctx
;
6540 struct nfs4_state
*state
;
6543 /* verify open state */
6544 ctx
= nfs_file_open_context(filp
);
6547 if (request
->fl_start
< 0 || request
->fl_end
< 0)
6550 if (IS_GETLK(cmd
)) {
6552 return nfs4_proc_getlk(state
, F_GETLK
, request
);
6556 if (!(IS_SETLK(cmd
) || IS_SETLKW(cmd
)))
6559 if (request
->fl_type
== F_UNLCK
) {
6561 return nfs4_proc_unlck(state
, cmd
, request
);
6568 if ((request
->fl_flags
& FL_POSIX
) &&
6569 !test_bit(NFS_STATE_POSIX_LOCKS
, &state
->flags
))
6573 * Don't rely on the VFS having checked the file open mode,
6574 * since it won't do this for flock() locks.
6576 switch (request
->fl_type
) {
6578 if (!(filp
->f_mode
& FMODE_READ
))
6582 if (!(filp
->f_mode
& FMODE_WRITE
))
6586 status
= nfs4_set_lock_state(state
, request
);
6590 return nfs4_retry_setlk(state
, cmd
, request
);
6593 int nfs4_lock_delegation_recall(struct file_lock
*fl
, struct nfs4_state
*state
, const nfs4_stateid
*stateid
)
6595 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
6598 err
= nfs4_set_lock_state(state
, fl
);
6601 err
= _nfs4_do_setlk(state
, F_SETLK
, fl
, NFS_LOCK_NEW
);
6602 return nfs4_handle_delegation_recall_error(server
, state
, stateid
, err
);
6605 struct nfs_release_lockowner_data
{
6606 struct nfs4_lock_state
*lsp
;
6607 struct nfs_server
*server
;
6608 struct nfs_release_lockowner_args args
;
6609 struct nfs_release_lockowner_res res
;
6610 unsigned long timestamp
;
6613 static void nfs4_release_lockowner_prepare(struct rpc_task
*task
, void *calldata
)
6615 struct nfs_release_lockowner_data
*data
= calldata
;
6616 struct nfs_server
*server
= data
->server
;
6617 nfs40_setup_sequence(server
->nfs_client
->cl_slot_tbl
,
6618 &data
->args
.seq_args
, &data
->res
.seq_res
, task
);
6619 data
->args
.lock_owner
.clientid
= server
->nfs_client
->cl_clientid
;
6620 data
->timestamp
= jiffies
;
6623 static void nfs4_release_lockowner_done(struct rpc_task
*task
, void *calldata
)
6625 struct nfs_release_lockowner_data
*data
= calldata
;
6626 struct nfs_server
*server
= data
->server
;
6628 nfs40_sequence_done(task
, &data
->res
.seq_res
);
6630 switch (task
->tk_status
) {
6632 renew_lease(server
, data
->timestamp
);
6634 case -NFS4ERR_STALE_CLIENTID
:
6635 case -NFS4ERR_EXPIRED
:
6636 nfs4_schedule_lease_recovery(server
->nfs_client
);
6638 case -NFS4ERR_LEASE_MOVED
:
6639 case -NFS4ERR_DELAY
:
6640 if (nfs4_async_handle_error(task
, server
,
6641 NULL
, NULL
) == -EAGAIN
)
6642 rpc_restart_call_prepare(task
);
6646 static void nfs4_release_lockowner_release(void *calldata
)
6648 struct nfs_release_lockowner_data
*data
= calldata
;
6649 nfs4_free_lock_state(data
->server
, data
->lsp
);
6653 static const struct rpc_call_ops nfs4_release_lockowner_ops
= {
6654 .rpc_call_prepare
= nfs4_release_lockowner_prepare
,
6655 .rpc_call_done
= nfs4_release_lockowner_done
,
6656 .rpc_release
= nfs4_release_lockowner_release
,
6660 nfs4_release_lockowner(struct nfs_server
*server
, struct nfs4_lock_state
*lsp
)
6662 struct nfs_release_lockowner_data
*data
;
6663 struct rpc_message msg
= {
6664 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RELEASE_LOCKOWNER
],
6667 if (server
->nfs_client
->cl_mvops
->minor_version
!= 0)
6670 data
= kmalloc(sizeof(*data
), GFP_NOFS
);
6674 data
->server
= server
;
6675 data
->args
.lock_owner
.clientid
= server
->nfs_client
->cl_clientid
;
6676 data
->args
.lock_owner
.id
= lsp
->ls_seqid
.owner_id
;
6677 data
->args
.lock_owner
.s_dev
= server
->s_dev
;
6679 msg
.rpc_argp
= &data
->args
;
6680 msg
.rpc_resp
= &data
->res
;
6681 nfs4_init_sequence(&data
->args
.seq_args
, &data
->res
.seq_res
, 0);
6682 rpc_call_async(server
->client
, &msg
, 0, &nfs4_release_lockowner_ops
, data
);
6685 #define XATTR_NAME_NFSV4_ACL "system.nfs4_acl"
6687 static int nfs4_xattr_set_nfs4_acl(const struct xattr_handler
*handler
,
6688 struct dentry
*unused
, struct inode
*inode
,
6689 const char *key
, const void *buf
,
6690 size_t buflen
, int flags
)
6692 return nfs4_proc_set_acl(inode
, buf
, buflen
);
6695 static int nfs4_xattr_get_nfs4_acl(const struct xattr_handler
*handler
,
6696 struct dentry
*unused
, struct inode
*inode
,
6697 const char *key
, void *buf
, size_t buflen
)
6699 return nfs4_proc_get_acl(inode
, buf
, buflen
);
6702 static bool nfs4_xattr_list_nfs4_acl(struct dentry
*dentry
)
6704 return nfs4_server_supports_acls(NFS_SERVER(d_inode(dentry
)));
6707 #ifdef CONFIG_NFS_V4_SECURITY_LABEL
6709 static int nfs4_xattr_set_nfs4_label(const struct xattr_handler
*handler
,
6710 struct dentry
*unused
, struct inode
*inode
,
6711 const char *key
, const void *buf
,
6712 size_t buflen
, int flags
)
6714 if (security_ismaclabel(key
))
6715 return nfs4_set_security_label(inode
, buf
, buflen
);
6720 static int nfs4_xattr_get_nfs4_label(const struct xattr_handler
*handler
,
6721 struct dentry
*unused
, struct inode
*inode
,
6722 const char *key
, void *buf
, size_t buflen
)
6724 if (security_ismaclabel(key
))
6725 return nfs4_get_security_label(inode
, buf
, buflen
);
6730 nfs4_listxattr_nfs4_label(struct inode
*inode
, char *list
, size_t list_len
)
6734 if (nfs_server_capable(inode
, NFS_CAP_SECURITY_LABEL
)) {
6735 len
= security_inode_listsecurity(inode
, list
, list_len
);
6736 if (list_len
&& len
> list_len
)
6742 static const struct xattr_handler nfs4_xattr_nfs4_label_handler
= {
6743 .prefix
= XATTR_SECURITY_PREFIX
,
6744 .get
= nfs4_xattr_get_nfs4_label
,
6745 .set
= nfs4_xattr_set_nfs4_label
,
6751 nfs4_listxattr_nfs4_label(struct inode
*inode
, char *list
, size_t list_len
)
6759 * nfs_fhget will use either the mounted_on_fileid or the fileid
6761 static void nfs_fixup_referral_attributes(struct nfs_fattr
*fattr
)
6763 if (!(((fattr
->valid
& NFS_ATTR_FATTR_MOUNTED_ON_FILEID
) ||
6764 (fattr
->valid
& NFS_ATTR_FATTR_FILEID
)) &&
6765 (fattr
->valid
& NFS_ATTR_FATTR_FSID
) &&
6766 (fattr
->valid
& NFS_ATTR_FATTR_V4_LOCATIONS
)))
6769 fattr
->valid
|= NFS_ATTR_FATTR_TYPE
| NFS_ATTR_FATTR_MODE
|
6770 NFS_ATTR_FATTR_NLINK
| NFS_ATTR_FATTR_V4_REFERRAL
;
6771 fattr
->mode
= S_IFDIR
| S_IRUGO
| S_IXUGO
;
6775 static int _nfs4_proc_fs_locations(struct rpc_clnt
*client
, struct inode
*dir
,
6776 const struct qstr
*name
,
6777 struct nfs4_fs_locations
*fs_locations
,
6780 struct nfs_server
*server
= NFS_SERVER(dir
);
6782 [0] = FATTR4_WORD0_FSID
| FATTR4_WORD0_FS_LOCATIONS
,
6784 struct nfs4_fs_locations_arg args
= {
6785 .dir_fh
= NFS_FH(dir
),
6790 struct nfs4_fs_locations_res res
= {
6791 .fs_locations
= fs_locations
,
6793 struct rpc_message msg
= {
6794 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_FS_LOCATIONS
],
6800 dprintk("%s: start\n", __func__
);
6802 /* Ask for the fileid of the absent filesystem if mounted_on_fileid
6803 * is not supported */
6804 if (NFS_SERVER(dir
)->attr_bitmask
[1] & FATTR4_WORD1_MOUNTED_ON_FILEID
)
6805 bitmask
[1] |= FATTR4_WORD1_MOUNTED_ON_FILEID
;
6807 bitmask
[0] |= FATTR4_WORD0_FILEID
;
6809 nfs_fattr_init(&fs_locations
->fattr
);
6810 fs_locations
->server
= server
;
6811 fs_locations
->nlocations
= 0;
6812 status
= nfs4_call_sync(client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
6813 dprintk("%s: returned status = %d\n", __func__
, status
);
6817 int nfs4_proc_fs_locations(struct rpc_clnt
*client
, struct inode
*dir
,
6818 const struct qstr
*name
,
6819 struct nfs4_fs_locations
*fs_locations
,
6822 struct nfs4_exception exception
= { };
6825 err
= _nfs4_proc_fs_locations(client
, dir
, name
,
6826 fs_locations
, page
);
6827 trace_nfs4_get_fs_locations(dir
, name
, err
);
6828 err
= nfs4_handle_exception(NFS_SERVER(dir
), err
,
6830 } while (exception
.retry
);
6835 * This operation also signals the server that this client is
6836 * performing migration recovery. The server can stop returning
6837 * NFS4ERR_LEASE_MOVED to this client. A RENEW operation is
6838 * appended to this compound to identify the client ID which is
6839 * performing recovery.
6841 static int _nfs40_proc_get_locations(struct inode
*inode
,
6842 struct nfs4_fs_locations
*locations
,
6843 struct page
*page
, struct rpc_cred
*cred
)
6845 struct nfs_server
*server
= NFS_SERVER(inode
);
6846 struct rpc_clnt
*clnt
= server
->client
;
6848 [0] = FATTR4_WORD0_FSID
| FATTR4_WORD0_FS_LOCATIONS
,
6850 struct nfs4_fs_locations_arg args
= {
6851 .clientid
= server
->nfs_client
->cl_clientid
,
6852 .fh
= NFS_FH(inode
),
6855 .migration
= 1, /* skip LOOKUP */
6856 .renew
= 1, /* append RENEW */
6858 struct nfs4_fs_locations_res res
= {
6859 .fs_locations
= locations
,
6863 struct rpc_message msg
= {
6864 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_FS_LOCATIONS
],
6869 unsigned long now
= jiffies
;
6872 nfs_fattr_init(&locations
->fattr
);
6873 locations
->server
= server
;
6874 locations
->nlocations
= 0;
6876 nfs4_init_sequence(&args
.seq_args
, &res
.seq_res
, 0);
6877 nfs4_set_sequence_privileged(&args
.seq_args
);
6878 status
= nfs4_call_sync_sequence(clnt
, server
, &msg
,
6879 &args
.seq_args
, &res
.seq_res
);
6883 renew_lease(server
, now
);
6887 #ifdef CONFIG_NFS_V4_1
6890 * This operation also signals the server that this client is
6891 * performing migration recovery. The server can stop asserting
6892 * SEQ4_STATUS_LEASE_MOVED for this client. The client ID
6893 * performing this operation is identified in the SEQUENCE
6894 * operation in this compound.
6896 * When the client supports GETATTR(fs_locations_info), it can
6897 * be plumbed in here.
6899 static int _nfs41_proc_get_locations(struct inode
*inode
,
6900 struct nfs4_fs_locations
*locations
,
6901 struct page
*page
, struct rpc_cred
*cred
)
6903 struct nfs_server
*server
= NFS_SERVER(inode
);
6904 struct rpc_clnt
*clnt
= server
->client
;
6906 [0] = FATTR4_WORD0_FSID
| FATTR4_WORD0_FS_LOCATIONS
,
6908 struct nfs4_fs_locations_arg args
= {
6909 .fh
= NFS_FH(inode
),
6912 .migration
= 1, /* skip LOOKUP */
6914 struct nfs4_fs_locations_res res
= {
6915 .fs_locations
= locations
,
6918 struct rpc_message msg
= {
6919 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_FS_LOCATIONS
],
6926 nfs_fattr_init(&locations
->fattr
);
6927 locations
->server
= server
;
6928 locations
->nlocations
= 0;
6930 nfs4_init_sequence(&args
.seq_args
, &res
.seq_res
, 0);
6931 nfs4_set_sequence_privileged(&args
.seq_args
);
6932 status
= nfs4_call_sync_sequence(clnt
, server
, &msg
,
6933 &args
.seq_args
, &res
.seq_res
);
6934 if (status
== NFS4_OK
&&
6935 res
.seq_res
.sr_status_flags
& SEQ4_STATUS_LEASE_MOVED
)
6936 status
= -NFS4ERR_LEASE_MOVED
;
6940 #endif /* CONFIG_NFS_V4_1 */
6943 * nfs4_proc_get_locations - discover locations for a migrated FSID
6944 * @inode: inode on FSID that is migrating
6945 * @locations: result of query
6947 * @cred: credential to use for this operation
6949 * Returns NFS4_OK on success, a negative NFS4ERR status code if the
6950 * operation failed, or a negative errno if a local error occurred.
6952 * On success, "locations" is filled in, but if the server has
6953 * no locations information, NFS_ATTR_FATTR_V4_LOCATIONS is not
6956 * -NFS4ERR_LEASE_MOVED is returned if the server still has leases
6957 * from this client that require migration recovery.
6959 int nfs4_proc_get_locations(struct inode
*inode
,
6960 struct nfs4_fs_locations
*locations
,
6961 struct page
*page
, struct rpc_cred
*cred
)
6963 struct nfs_server
*server
= NFS_SERVER(inode
);
6964 struct nfs_client
*clp
= server
->nfs_client
;
6965 const struct nfs4_mig_recovery_ops
*ops
=
6966 clp
->cl_mvops
->mig_recovery_ops
;
6967 struct nfs4_exception exception
= { };
6970 dprintk("%s: FSID %llx:%llx on \"%s\"\n", __func__
,
6971 (unsigned long long)server
->fsid
.major
,
6972 (unsigned long long)server
->fsid
.minor
,
6974 nfs_display_fhandle(NFS_FH(inode
), __func__
);
6977 status
= ops
->get_locations(inode
, locations
, page
, cred
);
6978 if (status
!= -NFS4ERR_DELAY
)
6980 nfs4_handle_exception(server
, status
, &exception
);
6981 } while (exception
.retry
);
6986 * This operation also signals the server that this client is
6987 * performing "lease moved" recovery. The server can stop
6988 * returning NFS4ERR_LEASE_MOVED to this client. A RENEW operation
6989 * is appended to this compound to identify the client ID which is
6990 * performing recovery.
6992 static int _nfs40_proc_fsid_present(struct inode
*inode
, struct rpc_cred
*cred
)
6994 struct nfs_server
*server
= NFS_SERVER(inode
);
6995 struct nfs_client
*clp
= NFS_SERVER(inode
)->nfs_client
;
6996 struct rpc_clnt
*clnt
= server
->client
;
6997 struct nfs4_fsid_present_arg args
= {
6998 .fh
= NFS_FH(inode
),
6999 .clientid
= clp
->cl_clientid
,
7000 .renew
= 1, /* append RENEW */
7002 struct nfs4_fsid_present_res res
= {
7005 struct rpc_message msg
= {
7006 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_FSID_PRESENT
],
7011 unsigned long now
= jiffies
;
7014 res
.fh
= nfs_alloc_fhandle();
7018 nfs4_init_sequence(&args
.seq_args
, &res
.seq_res
, 0);
7019 nfs4_set_sequence_privileged(&args
.seq_args
);
7020 status
= nfs4_call_sync_sequence(clnt
, server
, &msg
,
7021 &args
.seq_args
, &res
.seq_res
);
7022 nfs_free_fhandle(res
.fh
);
7026 do_renew_lease(clp
, now
);
7030 #ifdef CONFIG_NFS_V4_1
7033 * This operation also signals the server that this client is
7034 * performing "lease moved" recovery. The server can stop asserting
7035 * SEQ4_STATUS_LEASE_MOVED for this client. The client ID performing
7036 * this operation is identified in the SEQUENCE operation in this
7039 static int _nfs41_proc_fsid_present(struct inode
*inode
, struct rpc_cred
*cred
)
7041 struct nfs_server
*server
= NFS_SERVER(inode
);
7042 struct rpc_clnt
*clnt
= server
->client
;
7043 struct nfs4_fsid_present_arg args
= {
7044 .fh
= NFS_FH(inode
),
7046 struct nfs4_fsid_present_res res
= {
7048 struct rpc_message msg
= {
7049 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_FSID_PRESENT
],
7056 res
.fh
= nfs_alloc_fhandle();
7060 nfs4_init_sequence(&args
.seq_args
, &res
.seq_res
, 0);
7061 nfs4_set_sequence_privileged(&args
.seq_args
);
7062 status
= nfs4_call_sync_sequence(clnt
, server
, &msg
,
7063 &args
.seq_args
, &res
.seq_res
);
7064 nfs_free_fhandle(res
.fh
);
7065 if (status
== NFS4_OK
&&
7066 res
.seq_res
.sr_status_flags
& SEQ4_STATUS_LEASE_MOVED
)
7067 status
= -NFS4ERR_LEASE_MOVED
;
7071 #endif /* CONFIG_NFS_V4_1 */
7074 * nfs4_proc_fsid_present - Is this FSID present or absent on server?
7075 * @inode: inode on FSID to check
7076 * @cred: credential to use for this operation
7078 * Server indicates whether the FSID is present, moved, or not
7079 * recognized. This operation is necessary to clear a LEASE_MOVED
7080 * condition for this client ID.
7082 * Returns NFS4_OK if the FSID is present on this server,
7083 * -NFS4ERR_MOVED if the FSID is no longer present, a negative
7084 * NFS4ERR code if some error occurred on the server, or a
7085 * negative errno if a local failure occurred.
7087 int nfs4_proc_fsid_present(struct inode
*inode
, struct rpc_cred
*cred
)
7089 struct nfs_server
*server
= NFS_SERVER(inode
);
7090 struct nfs_client
*clp
= server
->nfs_client
;
7091 const struct nfs4_mig_recovery_ops
*ops
=
7092 clp
->cl_mvops
->mig_recovery_ops
;
7093 struct nfs4_exception exception
= { };
7096 dprintk("%s: FSID %llx:%llx on \"%s\"\n", __func__
,
7097 (unsigned long long)server
->fsid
.major
,
7098 (unsigned long long)server
->fsid
.minor
,
7100 nfs_display_fhandle(NFS_FH(inode
), __func__
);
7103 status
= ops
->fsid_present(inode
, cred
);
7104 if (status
!= -NFS4ERR_DELAY
)
7106 nfs4_handle_exception(server
, status
, &exception
);
7107 } while (exception
.retry
);
7112 * If 'use_integrity' is true and the state managment nfs_client
7113 * cl_rpcclient is using krb5i/p, use the integrity protected cl_rpcclient
7114 * and the machine credential as per RFC3530bis and RFC5661 Security
7115 * Considerations sections. Otherwise, just use the user cred with the
7116 * filesystem's rpc_client.
7118 static int _nfs4_proc_secinfo(struct inode
*dir
, const struct qstr
*name
, struct nfs4_secinfo_flavors
*flavors
, bool use_integrity
)
7121 struct nfs4_secinfo_arg args
= {
7122 .dir_fh
= NFS_FH(dir
),
7125 struct nfs4_secinfo_res res
= {
7128 struct rpc_message msg
= {
7129 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SECINFO
],
7133 struct rpc_clnt
*clnt
= NFS_SERVER(dir
)->client
;
7134 struct rpc_cred
*cred
= NULL
;
7136 if (use_integrity
) {
7137 clnt
= NFS_SERVER(dir
)->nfs_client
->cl_rpcclient
;
7138 cred
= nfs4_get_clid_cred(NFS_SERVER(dir
)->nfs_client
);
7139 msg
.rpc_cred
= cred
;
7142 dprintk("NFS call secinfo %s\n", name
->name
);
7144 nfs4_state_protect(NFS_SERVER(dir
)->nfs_client
,
7145 NFS_SP4_MACH_CRED_SECINFO
, &clnt
, &msg
);
7147 status
= nfs4_call_sync(clnt
, NFS_SERVER(dir
), &msg
, &args
.seq_args
,
7149 dprintk("NFS reply secinfo: %d\n", status
);
7157 int nfs4_proc_secinfo(struct inode
*dir
, const struct qstr
*name
,
7158 struct nfs4_secinfo_flavors
*flavors
)
7160 struct nfs4_exception exception
= { };
7163 err
= -NFS4ERR_WRONGSEC
;
7165 /* try to use integrity protection with machine cred */
7166 if (_nfs4_is_integrity_protected(NFS_SERVER(dir
)->nfs_client
))
7167 err
= _nfs4_proc_secinfo(dir
, name
, flavors
, true);
7170 * if unable to use integrity protection, or SECINFO with
7171 * integrity protection returns NFS4ERR_WRONGSEC (which is
7172 * disallowed by spec, but exists in deployed servers) use
7173 * the current filesystem's rpc_client and the user cred.
7175 if (err
== -NFS4ERR_WRONGSEC
)
7176 err
= _nfs4_proc_secinfo(dir
, name
, flavors
, false);
7178 trace_nfs4_secinfo(dir
, name
, err
);
7179 err
= nfs4_handle_exception(NFS_SERVER(dir
), err
,
7181 } while (exception
.retry
);
7185 #ifdef CONFIG_NFS_V4_1
7187 * Check the exchange flags returned by the server for invalid flags, having
7188 * both PNFS and NON_PNFS flags set, and not having one of NON_PNFS, PNFS, or
7191 static int nfs4_check_cl_exchange_flags(u32 flags
)
7193 if (flags
& ~EXCHGID4_FLAG_MASK_R
)
7195 if ((flags
& EXCHGID4_FLAG_USE_PNFS_MDS
) &&
7196 (flags
& EXCHGID4_FLAG_USE_NON_PNFS
))
7198 if (!(flags
& (EXCHGID4_FLAG_MASK_PNFS
)))
7202 return -NFS4ERR_INVAL
;
7206 nfs41_same_server_scope(struct nfs41_server_scope
*a
,
7207 struct nfs41_server_scope
*b
)
7209 if (a
->server_scope_sz
== b
->server_scope_sz
&&
7210 memcmp(a
->server_scope
, b
->server_scope
, a
->server_scope_sz
) == 0)
7217 nfs4_bind_one_conn_to_session_done(struct rpc_task
*task
, void *calldata
)
7221 static const struct rpc_call_ops nfs4_bind_one_conn_to_session_ops
= {
7222 .rpc_call_done
= &nfs4_bind_one_conn_to_session_done
,
7226 * nfs4_proc_bind_one_conn_to_session()
7228 * The 4.1 client currently uses the same TCP connection for the
7229 * fore and backchannel.
7232 int nfs4_proc_bind_one_conn_to_session(struct rpc_clnt
*clnt
,
7233 struct rpc_xprt
*xprt
,
7234 struct nfs_client
*clp
,
7235 struct rpc_cred
*cred
)
7238 struct nfs41_bind_conn_to_session_args args
= {
7240 .dir
= NFS4_CDFC4_FORE_OR_BOTH
,
7242 struct nfs41_bind_conn_to_session_res res
;
7243 struct rpc_message msg
= {
7245 &nfs4_procedures
[NFSPROC4_CLNT_BIND_CONN_TO_SESSION
],
7250 struct rpc_task_setup task_setup_data
= {
7253 .callback_ops
= &nfs4_bind_one_conn_to_session_ops
,
7254 .rpc_message
= &msg
,
7255 .flags
= RPC_TASK_TIMEOUT
,
7257 struct rpc_task
*task
;
7259 dprintk("--> %s\n", __func__
);
7261 nfs4_copy_sessionid(&args
.sessionid
, &clp
->cl_session
->sess_id
);
7262 if (!(clp
->cl_session
->flags
& SESSION4_BACK_CHAN
))
7263 args
.dir
= NFS4_CDFC4_FORE
;
7265 /* Do not set the backchannel flag unless this is clnt->cl_xprt */
7266 if (xprt
!= rcu_access_pointer(clnt
->cl_xprt
))
7267 args
.dir
= NFS4_CDFC4_FORE
;
7269 task
= rpc_run_task(&task_setup_data
);
7270 if (!IS_ERR(task
)) {
7271 status
= task
->tk_status
;
7274 status
= PTR_ERR(task
);
7275 trace_nfs4_bind_conn_to_session(clp
, status
);
7277 if (memcmp(res
.sessionid
.data
,
7278 clp
->cl_session
->sess_id
.data
, NFS4_MAX_SESSIONID_LEN
)) {
7279 dprintk("NFS: %s: Session ID mismatch\n", __func__
);
7283 if ((res
.dir
& args
.dir
) != res
.dir
|| res
.dir
== 0) {
7284 dprintk("NFS: %s: Unexpected direction from server\n",
7289 if (res
.use_conn_in_rdma_mode
!= args
.use_conn_in_rdma_mode
) {
7290 dprintk("NFS: %s: Server returned RDMA mode = true\n",
7297 dprintk("<-- %s status= %d\n", __func__
, status
);
7301 struct rpc_bind_conn_calldata
{
7302 struct nfs_client
*clp
;
7303 struct rpc_cred
*cred
;
7307 nfs4_proc_bind_conn_to_session_callback(struct rpc_clnt
*clnt
,
7308 struct rpc_xprt
*xprt
,
7311 struct rpc_bind_conn_calldata
*p
= calldata
;
7313 return nfs4_proc_bind_one_conn_to_session(clnt
, xprt
, p
->clp
, p
->cred
);
7316 int nfs4_proc_bind_conn_to_session(struct nfs_client
*clp
, struct rpc_cred
*cred
)
7318 struct rpc_bind_conn_calldata data
= {
7322 return rpc_clnt_iterate_for_each_xprt(clp
->cl_rpcclient
,
7323 nfs4_proc_bind_conn_to_session_callback
, &data
);
7327 * Minimum set of SP4_MACH_CRED operations from RFC 5661 in the enforce map
7328 * and operations we'd like to see to enable certain features in the allow map
7330 static const struct nfs41_state_protection nfs4_sp4_mach_cred_request
= {
7331 .how
= SP4_MACH_CRED
,
7332 .enforce
.u
.words
= {
7333 [1] = 1 << (OP_BIND_CONN_TO_SESSION
- 32) |
7334 1 << (OP_EXCHANGE_ID
- 32) |
7335 1 << (OP_CREATE_SESSION
- 32) |
7336 1 << (OP_DESTROY_SESSION
- 32) |
7337 1 << (OP_DESTROY_CLIENTID
- 32)
7340 [0] = 1 << (OP_CLOSE
) |
7341 1 << (OP_OPEN_DOWNGRADE
) |
7343 1 << (OP_DELEGRETURN
) |
7345 [1] = 1 << (OP_SECINFO
- 32) |
7346 1 << (OP_SECINFO_NO_NAME
- 32) |
7347 1 << (OP_LAYOUTRETURN
- 32) |
7348 1 << (OP_TEST_STATEID
- 32) |
7349 1 << (OP_FREE_STATEID
- 32) |
7350 1 << (OP_WRITE
- 32)
7355 * Select the state protection mode for client `clp' given the server results
7356 * from exchange_id in `sp'.
7358 * Returns 0 on success, negative errno otherwise.
7360 static int nfs4_sp4_select_mode(struct nfs_client
*clp
,
7361 struct nfs41_state_protection
*sp
)
7363 static const u32 supported_enforce
[NFS4_OP_MAP_NUM_WORDS
] = {
7364 [1] = 1 << (OP_BIND_CONN_TO_SESSION
- 32) |
7365 1 << (OP_EXCHANGE_ID
- 32) |
7366 1 << (OP_CREATE_SESSION
- 32) |
7367 1 << (OP_DESTROY_SESSION
- 32) |
7368 1 << (OP_DESTROY_CLIENTID
- 32)
7372 if (sp
->how
== SP4_MACH_CRED
) {
7373 /* Print state protect result */
7374 dfprintk(MOUNT
, "Server SP4_MACH_CRED support:\n");
7375 for (i
= 0; i
<= LAST_NFS4_OP
; i
++) {
7376 if (test_bit(i
, sp
->enforce
.u
.longs
))
7377 dfprintk(MOUNT
, " enforce op %d\n", i
);
7378 if (test_bit(i
, sp
->allow
.u
.longs
))
7379 dfprintk(MOUNT
, " allow op %d\n", i
);
7382 /* make sure nothing is on enforce list that isn't supported */
7383 for (i
= 0; i
< NFS4_OP_MAP_NUM_WORDS
; i
++) {
7384 if (sp
->enforce
.u
.words
[i
] & ~supported_enforce
[i
]) {
7385 dfprintk(MOUNT
, "sp4_mach_cred: disabled\n");
7391 * Minimal mode - state operations are allowed to use machine
7392 * credential. Note this already happens by default, so the
7393 * client doesn't have to do anything more than the negotiation.
7395 * NOTE: we don't care if EXCHANGE_ID is in the list -
7396 * we're already using the machine cred for exchange_id
7397 * and will never use a different cred.
7399 if (test_bit(OP_BIND_CONN_TO_SESSION
, sp
->enforce
.u
.longs
) &&
7400 test_bit(OP_CREATE_SESSION
, sp
->enforce
.u
.longs
) &&
7401 test_bit(OP_DESTROY_SESSION
, sp
->enforce
.u
.longs
) &&
7402 test_bit(OP_DESTROY_CLIENTID
, sp
->enforce
.u
.longs
)) {
7403 dfprintk(MOUNT
, "sp4_mach_cred:\n");
7404 dfprintk(MOUNT
, " minimal mode enabled\n");
7405 set_bit(NFS_SP4_MACH_CRED_MINIMAL
, &clp
->cl_sp4_flags
);
7407 dfprintk(MOUNT
, "sp4_mach_cred: disabled\n");
7411 if (test_bit(OP_CLOSE
, sp
->allow
.u
.longs
) &&
7412 test_bit(OP_OPEN_DOWNGRADE
, sp
->allow
.u
.longs
) &&
7413 test_bit(OP_DELEGRETURN
, sp
->allow
.u
.longs
) &&
7414 test_bit(OP_LOCKU
, sp
->allow
.u
.longs
)) {
7415 dfprintk(MOUNT
, " cleanup mode enabled\n");
7416 set_bit(NFS_SP4_MACH_CRED_CLEANUP
, &clp
->cl_sp4_flags
);
7419 if (test_bit(OP_LAYOUTRETURN
, sp
->allow
.u
.longs
)) {
7420 dfprintk(MOUNT
, " pnfs cleanup mode enabled\n");
7421 set_bit(NFS_SP4_MACH_CRED_PNFS_CLEANUP
,
7422 &clp
->cl_sp4_flags
);
7425 if (test_bit(OP_SECINFO
, sp
->allow
.u
.longs
) &&
7426 test_bit(OP_SECINFO_NO_NAME
, sp
->allow
.u
.longs
)) {
7427 dfprintk(MOUNT
, " secinfo mode enabled\n");
7428 set_bit(NFS_SP4_MACH_CRED_SECINFO
, &clp
->cl_sp4_flags
);
7431 if (test_bit(OP_TEST_STATEID
, sp
->allow
.u
.longs
) &&
7432 test_bit(OP_FREE_STATEID
, sp
->allow
.u
.longs
)) {
7433 dfprintk(MOUNT
, " stateid mode enabled\n");
7434 set_bit(NFS_SP4_MACH_CRED_STATEID
, &clp
->cl_sp4_flags
);
7437 if (test_bit(OP_WRITE
, sp
->allow
.u
.longs
)) {
7438 dfprintk(MOUNT
, " write mode enabled\n");
7439 set_bit(NFS_SP4_MACH_CRED_WRITE
, &clp
->cl_sp4_flags
);
7442 if (test_bit(OP_COMMIT
, sp
->allow
.u
.longs
)) {
7443 dfprintk(MOUNT
, " commit mode enabled\n");
7444 set_bit(NFS_SP4_MACH_CRED_COMMIT
, &clp
->cl_sp4_flags
);
7451 struct nfs41_exchange_id_data
{
7452 struct nfs41_exchange_id_res res
;
7453 struct nfs41_exchange_id_args args
;
7454 struct rpc_xprt
*xprt
;
7458 static void nfs4_exchange_id_done(struct rpc_task
*task
, void *data
)
7460 struct nfs41_exchange_id_data
*cdata
=
7461 (struct nfs41_exchange_id_data
*)data
;
7462 struct nfs_client
*clp
= cdata
->args
.client
;
7463 int status
= task
->tk_status
;
7465 trace_nfs4_exchange_id(clp
, status
);
7468 status
= nfs4_check_cl_exchange_flags(cdata
->res
.flags
);
7470 if (cdata
->xprt
&& status
== 0) {
7471 status
= nfs4_detect_session_trunking(clp
, &cdata
->res
,
7477 status
= nfs4_sp4_select_mode(clp
, &cdata
->res
.state_protect
);
7480 clp
->cl_clientid
= cdata
->res
.clientid
;
7481 clp
->cl_exchange_flags
= cdata
->res
.flags
;
7482 /* Client ID is not confirmed */
7483 if (!(cdata
->res
.flags
& EXCHGID4_FLAG_CONFIRMED_R
)) {
7484 clear_bit(NFS4_SESSION_ESTABLISHED
,
7485 &clp
->cl_session
->session_state
);
7486 clp
->cl_seqid
= cdata
->res
.seqid
;
7489 kfree(clp
->cl_serverowner
);
7490 clp
->cl_serverowner
= cdata
->res
.server_owner
;
7491 cdata
->res
.server_owner
= NULL
;
7493 /* use the most recent implementation id */
7494 kfree(clp
->cl_implid
);
7495 clp
->cl_implid
= cdata
->res
.impl_id
;
7496 cdata
->res
.impl_id
= NULL
;
7498 if (clp
->cl_serverscope
!= NULL
&&
7499 !nfs41_same_server_scope(clp
->cl_serverscope
,
7500 cdata
->res
.server_scope
)) {
7501 dprintk("%s: server_scope mismatch detected\n",
7503 set_bit(NFS4CLNT_SERVER_SCOPE_MISMATCH
, &clp
->cl_state
);
7504 kfree(clp
->cl_serverscope
);
7505 clp
->cl_serverscope
= NULL
;
7508 if (clp
->cl_serverscope
== NULL
) {
7509 clp
->cl_serverscope
= cdata
->res
.server_scope
;
7510 cdata
->res
.server_scope
= NULL
;
7512 /* Save the EXCHANGE_ID verifier session trunk tests */
7513 memcpy(clp
->cl_confirm
.data
, cdata
->args
.verifier
->data
,
7514 sizeof(clp
->cl_confirm
.data
));
7517 cdata
->rpc_status
= status
;
7521 static void nfs4_exchange_id_release(void *data
)
7523 struct nfs41_exchange_id_data
*cdata
=
7524 (struct nfs41_exchange_id_data
*)data
;
7526 nfs_put_client(cdata
->args
.client
);
7528 xprt_put(cdata
->xprt
);
7529 rpc_clnt_xprt_switch_put(cdata
->args
.client
->cl_rpcclient
);
7531 kfree(cdata
->res
.impl_id
);
7532 kfree(cdata
->res
.server_scope
);
7533 kfree(cdata
->res
.server_owner
);
7537 static const struct rpc_call_ops nfs4_exchange_id_call_ops
= {
7538 .rpc_call_done
= nfs4_exchange_id_done
,
7539 .rpc_release
= nfs4_exchange_id_release
,
7543 * _nfs4_proc_exchange_id()
7545 * Wrapper for EXCHANGE_ID operation.
7547 static int _nfs4_proc_exchange_id(struct nfs_client
*clp
, struct rpc_cred
*cred
,
7548 u32 sp4_how
, struct rpc_xprt
*xprt
)
7550 nfs4_verifier verifier
;
7551 struct rpc_message msg
= {
7552 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_EXCHANGE_ID
],
7555 struct rpc_task_setup task_setup_data
= {
7556 .rpc_client
= clp
->cl_rpcclient
,
7557 .callback_ops
= &nfs4_exchange_id_call_ops
,
7558 .rpc_message
= &msg
,
7559 .flags
= RPC_TASK_ASYNC
| RPC_TASK_TIMEOUT
,
7561 struct nfs41_exchange_id_data
*calldata
;
7562 struct rpc_task
*task
;
7565 if (!atomic_inc_not_zero(&clp
->cl_count
))
7569 calldata
= kzalloc(sizeof(*calldata
), GFP_NOFS
);
7574 nfs4_init_boot_verifier(clp
, &verifier
);
7576 status
= nfs4_init_uniform_client_string(clp
);
7580 dprintk("NFS call exchange_id auth=%s, '%s'\n",
7581 clp
->cl_rpcclient
->cl_auth
->au_ops
->au_name
,
7584 calldata
->res
.server_owner
= kzalloc(sizeof(struct nfs41_server_owner
),
7587 if (unlikely(calldata
->res
.server_owner
== NULL
))
7590 calldata
->res
.server_scope
= kzalloc(sizeof(struct nfs41_server_scope
),
7592 if (unlikely(calldata
->res
.server_scope
== NULL
))
7593 goto out_server_owner
;
7595 calldata
->res
.impl_id
= kzalloc(sizeof(struct nfs41_impl_id
), GFP_NOFS
);
7596 if (unlikely(calldata
->res
.impl_id
== NULL
))
7597 goto out_server_scope
;
7601 calldata
->args
.state_protect
.how
= SP4_NONE
;
7605 calldata
->args
.state_protect
= nfs4_sp4_mach_cred_request
;
7615 calldata
->xprt
= xprt
;
7616 task_setup_data
.rpc_xprt
= xprt
;
7617 task_setup_data
.flags
=
7618 RPC_TASK_SOFT
|RPC_TASK_SOFTCONN
|RPC_TASK_ASYNC
;
7619 calldata
->args
.verifier
= &clp
->cl_confirm
;
7621 calldata
->args
.verifier
= &verifier
;
7623 calldata
->args
.client
= clp
;
7624 #ifdef CONFIG_NFS_V4_1_MIGRATION
7625 calldata
->args
.flags
= EXCHGID4_FLAG_SUPP_MOVED_REFER
|
7626 EXCHGID4_FLAG_BIND_PRINC_STATEID
|
7627 EXCHGID4_FLAG_SUPP_MOVED_MIGR
,
7629 calldata
->args
.flags
= EXCHGID4_FLAG_SUPP_MOVED_REFER
|
7630 EXCHGID4_FLAG_BIND_PRINC_STATEID
,
7632 msg
.rpc_argp
= &calldata
->args
;
7633 msg
.rpc_resp
= &calldata
->res
;
7634 task_setup_data
.callback_data
= calldata
;
7636 task
= rpc_run_task(&task_setup_data
);
7638 status
= PTR_ERR(task
);
7643 status
= rpc_wait_for_completion_task(task
);
7645 status
= calldata
->rpc_status
;
7646 } else /* session trunking test */
7647 status
= calldata
->rpc_status
;
7651 if (clp
->cl_implid
!= NULL
)
7652 dprintk("NFS reply exchange_id: Server Implementation ID: "
7653 "domain: %s, name: %s, date: %llu,%u\n",
7654 clp
->cl_implid
->domain
, clp
->cl_implid
->name
,
7655 clp
->cl_implid
->date
.seconds
,
7656 clp
->cl_implid
->date
.nseconds
);
7657 dprintk("NFS reply exchange_id: %d\n", status
);
7661 kfree(calldata
->res
.impl_id
);
7663 kfree(calldata
->res
.server_scope
);
7665 kfree(calldata
->res
.server_owner
);
7672 * nfs4_proc_exchange_id()
7674 * Returns zero, a negative errno, or a negative NFS4ERR status code.
7676 * Since the clientid has expired, all compounds using sessions
7677 * associated with the stale clientid will be returning
7678 * NFS4ERR_BADSESSION in the sequence operation, and will therefore
7679 * be in some phase of session reset.
7681 * Will attempt to negotiate SP4_MACH_CRED if krb5i / krb5p auth is used.
7683 int nfs4_proc_exchange_id(struct nfs_client
*clp
, struct rpc_cred
*cred
)
7685 rpc_authflavor_t authflavor
= clp
->cl_rpcclient
->cl_auth
->au_flavor
;
7688 /* try SP4_MACH_CRED if krb5i/p */
7689 if (authflavor
== RPC_AUTH_GSS_KRB5I
||
7690 authflavor
== RPC_AUTH_GSS_KRB5P
) {
7691 status
= _nfs4_proc_exchange_id(clp
, cred
, SP4_MACH_CRED
, NULL
);
7697 return _nfs4_proc_exchange_id(clp
, cred
, SP4_NONE
, NULL
);
7701 * nfs4_test_session_trunk
7703 * This is an add_xprt_test() test function called from
7704 * rpc_clnt_setup_test_and_add_xprt.
7706 * The rpc_xprt_switch is referrenced by rpc_clnt_setup_test_and_add_xprt
7707 * and is dereferrenced in nfs4_exchange_id_release
7709 * Upon success, add the new transport to the rpc_clnt
7711 * @clnt: struct rpc_clnt to get new transport
7712 * @xprt: the rpc_xprt to test
7713 * @data: call data for _nfs4_proc_exchange_id.
7715 int nfs4_test_session_trunk(struct rpc_clnt
*clnt
, struct rpc_xprt
*xprt
,
7718 struct nfs4_add_xprt_data
*adata
= (struct nfs4_add_xprt_data
*)data
;
7721 dprintk("--> %s try %s\n", __func__
,
7722 xprt
->address_strings
[RPC_DISPLAY_ADDR
]);
7724 sp4_how
= (adata
->clp
->cl_sp4_flags
== 0 ? SP4_NONE
: SP4_MACH_CRED
);
7726 /* Test connection for session trunking. Async exchange_id call */
7727 return _nfs4_proc_exchange_id(adata
->clp
, adata
->cred
, sp4_how
, xprt
);
7729 EXPORT_SYMBOL_GPL(nfs4_test_session_trunk
);
7731 static int _nfs4_proc_destroy_clientid(struct nfs_client
*clp
,
7732 struct rpc_cred
*cred
)
7734 struct rpc_message msg
= {
7735 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_DESTROY_CLIENTID
],
7741 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
7742 trace_nfs4_destroy_clientid(clp
, status
);
7744 dprintk("NFS: Got error %d from the server %s on "
7745 "DESTROY_CLIENTID.", status
, clp
->cl_hostname
);
7749 static int nfs4_proc_destroy_clientid(struct nfs_client
*clp
,
7750 struct rpc_cred
*cred
)
7755 for (loop
= NFS4_MAX_LOOP_ON_RECOVER
; loop
!= 0; loop
--) {
7756 ret
= _nfs4_proc_destroy_clientid(clp
, cred
);
7758 case -NFS4ERR_DELAY
:
7759 case -NFS4ERR_CLIENTID_BUSY
:
7769 int nfs4_destroy_clientid(struct nfs_client
*clp
)
7771 struct rpc_cred
*cred
;
7774 if (clp
->cl_mvops
->minor_version
< 1)
7776 if (clp
->cl_exchange_flags
== 0)
7778 if (clp
->cl_preserve_clid
)
7780 cred
= nfs4_get_clid_cred(clp
);
7781 ret
= nfs4_proc_destroy_clientid(clp
, cred
);
7786 case -NFS4ERR_STALE_CLIENTID
:
7787 clp
->cl_exchange_flags
= 0;
7793 struct nfs4_get_lease_time_data
{
7794 struct nfs4_get_lease_time_args
*args
;
7795 struct nfs4_get_lease_time_res
*res
;
7796 struct nfs_client
*clp
;
7799 static void nfs4_get_lease_time_prepare(struct rpc_task
*task
,
7802 struct nfs4_get_lease_time_data
*data
=
7803 (struct nfs4_get_lease_time_data
*)calldata
;
7805 dprintk("--> %s\n", __func__
);
7806 /* just setup sequence, do not trigger session recovery
7807 since we're invoked within one */
7808 nfs41_setup_sequence(data
->clp
->cl_session
,
7809 &data
->args
->la_seq_args
,
7810 &data
->res
->lr_seq_res
,
7812 dprintk("<-- %s\n", __func__
);
7816 * Called from nfs4_state_manager thread for session setup, so don't recover
7817 * from sequence operation or clientid errors.
7819 static void nfs4_get_lease_time_done(struct rpc_task
*task
, void *calldata
)
7821 struct nfs4_get_lease_time_data
*data
=
7822 (struct nfs4_get_lease_time_data
*)calldata
;
7824 dprintk("--> %s\n", __func__
);
7825 if (!nfs41_sequence_done(task
, &data
->res
->lr_seq_res
))
7827 switch (task
->tk_status
) {
7828 case -NFS4ERR_DELAY
:
7829 case -NFS4ERR_GRACE
:
7830 dprintk("%s Retry: tk_status %d\n", __func__
, task
->tk_status
);
7831 rpc_delay(task
, NFS4_POLL_RETRY_MIN
);
7832 task
->tk_status
= 0;
7834 case -NFS4ERR_RETRY_UNCACHED_REP
:
7835 rpc_restart_call_prepare(task
);
7838 dprintk("<-- %s\n", __func__
);
7841 static const struct rpc_call_ops nfs4_get_lease_time_ops
= {
7842 .rpc_call_prepare
= nfs4_get_lease_time_prepare
,
7843 .rpc_call_done
= nfs4_get_lease_time_done
,
7846 int nfs4_proc_get_lease_time(struct nfs_client
*clp
, struct nfs_fsinfo
*fsinfo
)
7848 struct rpc_task
*task
;
7849 struct nfs4_get_lease_time_args args
;
7850 struct nfs4_get_lease_time_res res
= {
7851 .lr_fsinfo
= fsinfo
,
7853 struct nfs4_get_lease_time_data data
= {
7858 struct rpc_message msg
= {
7859 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GET_LEASE_TIME
],
7863 struct rpc_task_setup task_setup
= {
7864 .rpc_client
= clp
->cl_rpcclient
,
7865 .rpc_message
= &msg
,
7866 .callback_ops
= &nfs4_get_lease_time_ops
,
7867 .callback_data
= &data
,
7868 .flags
= RPC_TASK_TIMEOUT
,
7872 nfs4_init_sequence(&args
.la_seq_args
, &res
.lr_seq_res
, 0);
7873 nfs4_set_sequence_privileged(&args
.la_seq_args
);
7874 dprintk("--> %s\n", __func__
);
7875 task
= rpc_run_task(&task_setup
);
7878 status
= PTR_ERR(task
);
7880 status
= task
->tk_status
;
7883 dprintk("<-- %s return %d\n", __func__
, status
);
7889 * Initialize the values to be used by the client in CREATE_SESSION
7890 * If nfs4_init_session set the fore channel request and response sizes,
7893 * Set the back channel max_resp_sz_cached to zero to force the client to
7894 * always set csa_cachethis to FALSE because the current implementation
7895 * of the back channel DRC only supports caching the CB_SEQUENCE operation.
7897 static void nfs4_init_channel_attrs(struct nfs41_create_session_args
*args
,
7898 struct rpc_clnt
*clnt
)
7900 unsigned int max_rqst_sz
, max_resp_sz
;
7901 unsigned int max_bc_payload
= rpc_max_bc_payload(clnt
);
7903 max_rqst_sz
= NFS_MAX_FILE_IO_SIZE
+ nfs41_maxwrite_overhead
;
7904 max_resp_sz
= NFS_MAX_FILE_IO_SIZE
+ nfs41_maxread_overhead
;
7906 /* Fore channel attributes */
7907 args
->fc_attrs
.max_rqst_sz
= max_rqst_sz
;
7908 args
->fc_attrs
.max_resp_sz
= max_resp_sz
;
7909 args
->fc_attrs
.max_ops
= NFS4_MAX_OPS
;
7910 args
->fc_attrs
.max_reqs
= max_session_slots
;
7912 dprintk("%s: Fore Channel : max_rqst_sz=%u max_resp_sz=%u "
7913 "max_ops=%u max_reqs=%u\n",
7915 args
->fc_attrs
.max_rqst_sz
, args
->fc_attrs
.max_resp_sz
,
7916 args
->fc_attrs
.max_ops
, args
->fc_attrs
.max_reqs
);
7918 /* Back channel attributes */
7919 args
->bc_attrs
.max_rqst_sz
= max_bc_payload
;
7920 args
->bc_attrs
.max_resp_sz
= max_bc_payload
;
7921 args
->bc_attrs
.max_resp_sz_cached
= 0;
7922 args
->bc_attrs
.max_ops
= NFS4_MAX_BACK_CHANNEL_OPS
;
7923 args
->bc_attrs
.max_reqs
= min_t(unsigned short, max_session_cb_slots
, 1);
7925 dprintk("%s: Back Channel : max_rqst_sz=%u max_resp_sz=%u "
7926 "max_resp_sz_cached=%u max_ops=%u max_reqs=%u\n",
7928 args
->bc_attrs
.max_rqst_sz
, args
->bc_attrs
.max_resp_sz
,
7929 args
->bc_attrs
.max_resp_sz_cached
, args
->bc_attrs
.max_ops
,
7930 args
->bc_attrs
.max_reqs
);
7933 static int nfs4_verify_fore_channel_attrs(struct nfs41_create_session_args
*args
,
7934 struct nfs41_create_session_res
*res
)
7936 struct nfs4_channel_attrs
*sent
= &args
->fc_attrs
;
7937 struct nfs4_channel_attrs
*rcvd
= &res
->fc_attrs
;
7939 if (rcvd
->max_resp_sz
> sent
->max_resp_sz
)
7942 * Our requested max_ops is the minimum we need; we're not
7943 * prepared to break up compounds into smaller pieces than that.
7944 * So, no point even trying to continue if the server won't
7947 if (rcvd
->max_ops
< sent
->max_ops
)
7949 if (rcvd
->max_reqs
== 0)
7951 if (rcvd
->max_reqs
> NFS4_MAX_SLOT_TABLE
)
7952 rcvd
->max_reqs
= NFS4_MAX_SLOT_TABLE
;
7956 static int nfs4_verify_back_channel_attrs(struct nfs41_create_session_args
*args
,
7957 struct nfs41_create_session_res
*res
)
7959 struct nfs4_channel_attrs
*sent
= &args
->bc_attrs
;
7960 struct nfs4_channel_attrs
*rcvd
= &res
->bc_attrs
;
7962 if (!(res
->flags
& SESSION4_BACK_CHAN
))
7964 if (rcvd
->max_rqst_sz
> sent
->max_rqst_sz
)
7966 if (rcvd
->max_resp_sz
< sent
->max_resp_sz
)
7968 if (rcvd
->max_resp_sz_cached
> sent
->max_resp_sz_cached
)
7970 if (rcvd
->max_ops
> sent
->max_ops
)
7972 if (rcvd
->max_reqs
> sent
->max_reqs
)
7978 static int nfs4_verify_channel_attrs(struct nfs41_create_session_args
*args
,
7979 struct nfs41_create_session_res
*res
)
7983 ret
= nfs4_verify_fore_channel_attrs(args
, res
);
7986 return nfs4_verify_back_channel_attrs(args
, res
);
7989 static void nfs4_update_session(struct nfs4_session
*session
,
7990 struct nfs41_create_session_res
*res
)
7992 nfs4_copy_sessionid(&session
->sess_id
, &res
->sessionid
);
7993 /* Mark client id and session as being confirmed */
7994 session
->clp
->cl_exchange_flags
|= EXCHGID4_FLAG_CONFIRMED_R
;
7995 set_bit(NFS4_SESSION_ESTABLISHED
, &session
->session_state
);
7996 session
->flags
= res
->flags
;
7997 memcpy(&session
->fc_attrs
, &res
->fc_attrs
, sizeof(session
->fc_attrs
));
7998 if (res
->flags
& SESSION4_BACK_CHAN
)
7999 memcpy(&session
->bc_attrs
, &res
->bc_attrs
,
8000 sizeof(session
->bc_attrs
));
8003 static int _nfs4_proc_create_session(struct nfs_client
*clp
,
8004 struct rpc_cred
*cred
)
8006 struct nfs4_session
*session
= clp
->cl_session
;
8007 struct nfs41_create_session_args args
= {
8009 .clientid
= clp
->cl_clientid
,
8010 .seqid
= clp
->cl_seqid
,
8011 .cb_program
= NFS4_CALLBACK
,
8013 struct nfs41_create_session_res res
;
8015 struct rpc_message msg
= {
8016 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_CREATE_SESSION
],
8023 nfs4_init_channel_attrs(&args
, clp
->cl_rpcclient
);
8024 args
.flags
= (SESSION4_PERSIST
| SESSION4_BACK_CHAN
);
8026 status
= rpc_call_sync(session
->clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
8027 trace_nfs4_create_session(clp
, status
);
8030 case -NFS4ERR_STALE_CLIENTID
:
8031 case -NFS4ERR_DELAY
:
8040 /* Verify the session's negotiated channel_attrs values */
8041 status
= nfs4_verify_channel_attrs(&args
, &res
);
8042 /* Increment the clientid slot sequence id */
8045 nfs4_update_session(session
, &res
);
8052 * Issues a CREATE_SESSION operation to the server.
8053 * It is the responsibility of the caller to verify the session is
8054 * expired before calling this routine.
8056 int nfs4_proc_create_session(struct nfs_client
*clp
, struct rpc_cred
*cred
)
8060 struct nfs4_session
*session
= clp
->cl_session
;
8062 dprintk("--> %s clp=%p session=%p\n", __func__
, clp
, session
);
8064 status
= _nfs4_proc_create_session(clp
, cred
);
8068 /* Init or reset the session slot tables */
8069 status
= nfs4_setup_session_slot_tables(session
);
8070 dprintk("slot table setup returned %d\n", status
);
8074 ptr
= (unsigned *)&session
->sess_id
.data
[0];
8075 dprintk("%s client>seqid %d sessionid %u:%u:%u:%u\n", __func__
,
8076 clp
->cl_seqid
, ptr
[0], ptr
[1], ptr
[2], ptr
[3]);
8078 dprintk("<-- %s\n", __func__
);
8083 * Issue the over-the-wire RPC DESTROY_SESSION.
8084 * The caller must serialize access to this routine.
8086 int nfs4_proc_destroy_session(struct nfs4_session
*session
,
8087 struct rpc_cred
*cred
)
8089 struct rpc_message msg
= {
8090 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_DESTROY_SESSION
],
8091 .rpc_argp
= session
,
8096 dprintk("--> nfs4_proc_destroy_session\n");
8098 /* session is still being setup */
8099 if (!test_and_clear_bit(NFS4_SESSION_ESTABLISHED
, &session
->session_state
))
8102 status
= rpc_call_sync(session
->clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
8103 trace_nfs4_destroy_session(session
->clp
, status
);
8106 dprintk("NFS: Got error %d from the server on DESTROY_SESSION. "
8107 "Session has been destroyed regardless...\n", status
);
8109 dprintk("<-- nfs4_proc_destroy_session\n");
8114 * Renew the cl_session lease.
8116 struct nfs4_sequence_data
{
8117 struct nfs_client
*clp
;
8118 struct nfs4_sequence_args args
;
8119 struct nfs4_sequence_res res
;
8122 static void nfs41_sequence_release(void *data
)
8124 struct nfs4_sequence_data
*calldata
= data
;
8125 struct nfs_client
*clp
= calldata
->clp
;
8127 if (atomic_read(&clp
->cl_count
) > 1)
8128 nfs4_schedule_state_renewal(clp
);
8129 nfs_put_client(clp
);
8133 static int nfs41_sequence_handle_errors(struct rpc_task
*task
, struct nfs_client
*clp
)
8135 switch(task
->tk_status
) {
8136 case -NFS4ERR_DELAY
:
8137 rpc_delay(task
, NFS4_POLL_RETRY_MAX
);
8140 nfs4_schedule_lease_recovery(clp
);
8145 static void nfs41_sequence_call_done(struct rpc_task
*task
, void *data
)
8147 struct nfs4_sequence_data
*calldata
= data
;
8148 struct nfs_client
*clp
= calldata
->clp
;
8150 if (!nfs41_sequence_done(task
, task
->tk_msg
.rpc_resp
))
8153 trace_nfs4_sequence(clp
, task
->tk_status
);
8154 if (task
->tk_status
< 0) {
8155 dprintk("%s ERROR %d\n", __func__
, task
->tk_status
);
8156 if (atomic_read(&clp
->cl_count
) == 1)
8159 if (nfs41_sequence_handle_errors(task
, clp
) == -EAGAIN
) {
8160 rpc_restart_call_prepare(task
);
8164 dprintk("%s rpc_cred %p\n", __func__
, task
->tk_msg
.rpc_cred
);
8166 dprintk("<-- %s\n", __func__
);
8169 static void nfs41_sequence_prepare(struct rpc_task
*task
, void *data
)
8171 struct nfs4_sequence_data
*calldata
= data
;
8172 struct nfs_client
*clp
= calldata
->clp
;
8173 struct nfs4_sequence_args
*args
;
8174 struct nfs4_sequence_res
*res
;
8176 args
= task
->tk_msg
.rpc_argp
;
8177 res
= task
->tk_msg
.rpc_resp
;
8179 nfs41_setup_sequence(clp
->cl_session
, args
, res
, task
);
8182 static const struct rpc_call_ops nfs41_sequence_ops
= {
8183 .rpc_call_done
= nfs41_sequence_call_done
,
8184 .rpc_call_prepare
= nfs41_sequence_prepare
,
8185 .rpc_release
= nfs41_sequence_release
,
8188 static struct rpc_task
*_nfs41_proc_sequence(struct nfs_client
*clp
,
8189 struct rpc_cred
*cred
,
8192 struct nfs4_sequence_data
*calldata
;
8193 struct rpc_message msg
= {
8194 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SEQUENCE
],
8197 struct rpc_task_setup task_setup_data
= {
8198 .rpc_client
= clp
->cl_rpcclient
,
8199 .rpc_message
= &msg
,
8200 .callback_ops
= &nfs41_sequence_ops
,
8201 .flags
= RPC_TASK_ASYNC
| RPC_TASK_TIMEOUT
,
8204 if (!atomic_inc_not_zero(&clp
->cl_count
))
8205 return ERR_PTR(-EIO
);
8206 calldata
= kzalloc(sizeof(*calldata
), GFP_NOFS
);
8207 if (calldata
== NULL
) {
8208 nfs_put_client(clp
);
8209 return ERR_PTR(-ENOMEM
);
8211 nfs4_init_sequence(&calldata
->args
, &calldata
->res
, 0);
8213 nfs4_set_sequence_privileged(&calldata
->args
);
8214 msg
.rpc_argp
= &calldata
->args
;
8215 msg
.rpc_resp
= &calldata
->res
;
8216 calldata
->clp
= clp
;
8217 task_setup_data
.callback_data
= calldata
;
8219 return rpc_run_task(&task_setup_data
);
8222 static int nfs41_proc_async_sequence(struct nfs_client
*clp
, struct rpc_cred
*cred
, unsigned renew_flags
)
8224 struct rpc_task
*task
;
8227 if ((renew_flags
& NFS4_RENEW_TIMEOUT
) == 0)
8229 task
= _nfs41_proc_sequence(clp
, cred
, false);
8231 ret
= PTR_ERR(task
);
8233 rpc_put_task_async(task
);
8234 dprintk("<-- %s status=%d\n", __func__
, ret
);
8238 static int nfs4_proc_sequence(struct nfs_client
*clp
, struct rpc_cred
*cred
)
8240 struct rpc_task
*task
;
8243 task
= _nfs41_proc_sequence(clp
, cred
, true);
8245 ret
= PTR_ERR(task
);
8248 ret
= rpc_wait_for_completion_task(task
);
8250 ret
= task
->tk_status
;
8253 dprintk("<-- %s status=%d\n", __func__
, ret
);
8257 struct nfs4_reclaim_complete_data
{
8258 struct nfs_client
*clp
;
8259 struct nfs41_reclaim_complete_args arg
;
8260 struct nfs41_reclaim_complete_res res
;
8263 static void nfs4_reclaim_complete_prepare(struct rpc_task
*task
, void *data
)
8265 struct nfs4_reclaim_complete_data
*calldata
= data
;
8267 nfs41_setup_sequence(calldata
->clp
->cl_session
,
8268 &calldata
->arg
.seq_args
,
8269 &calldata
->res
.seq_res
,
8273 static int nfs41_reclaim_complete_handle_errors(struct rpc_task
*task
, struct nfs_client
*clp
)
8275 switch(task
->tk_status
) {
8277 case -NFS4ERR_COMPLETE_ALREADY
:
8278 case -NFS4ERR_WRONG_CRED
: /* What to do here? */
8280 case -NFS4ERR_DELAY
:
8281 rpc_delay(task
, NFS4_POLL_RETRY_MAX
);
8283 case -NFS4ERR_RETRY_UNCACHED_REP
:
8286 nfs4_schedule_lease_recovery(clp
);
8291 static void nfs4_reclaim_complete_done(struct rpc_task
*task
, void *data
)
8293 struct nfs4_reclaim_complete_data
*calldata
= data
;
8294 struct nfs_client
*clp
= calldata
->clp
;
8295 struct nfs4_sequence_res
*res
= &calldata
->res
.seq_res
;
8297 dprintk("--> %s\n", __func__
);
8298 if (!nfs41_sequence_done(task
, res
))
8301 trace_nfs4_reclaim_complete(clp
, task
->tk_status
);
8302 if (nfs41_reclaim_complete_handle_errors(task
, clp
) == -EAGAIN
) {
8303 rpc_restart_call_prepare(task
);
8306 dprintk("<-- %s\n", __func__
);
8309 static void nfs4_free_reclaim_complete_data(void *data
)
8311 struct nfs4_reclaim_complete_data
*calldata
= data
;
8316 static const struct rpc_call_ops nfs4_reclaim_complete_call_ops
= {
8317 .rpc_call_prepare
= nfs4_reclaim_complete_prepare
,
8318 .rpc_call_done
= nfs4_reclaim_complete_done
,
8319 .rpc_release
= nfs4_free_reclaim_complete_data
,
8323 * Issue a global reclaim complete.
8325 static int nfs41_proc_reclaim_complete(struct nfs_client
*clp
,
8326 struct rpc_cred
*cred
)
8328 struct nfs4_reclaim_complete_data
*calldata
;
8329 struct rpc_task
*task
;
8330 struct rpc_message msg
= {
8331 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RECLAIM_COMPLETE
],
8334 struct rpc_task_setup task_setup_data
= {
8335 .rpc_client
= clp
->cl_rpcclient
,
8336 .rpc_message
= &msg
,
8337 .callback_ops
= &nfs4_reclaim_complete_call_ops
,
8338 .flags
= RPC_TASK_ASYNC
,
8340 int status
= -ENOMEM
;
8342 dprintk("--> %s\n", __func__
);
8343 calldata
= kzalloc(sizeof(*calldata
), GFP_NOFS
);
8344 if (calldata
== NULL
)
8346 calldata
->clp
= clp
;
8347 calldata
->arg
.one_fs
= 0;
8349 nfs4_init_sequence(&calldata
->arg
.seq_args
, &calldata
->res
.seq_res
, 0);
8350 nfs4_set_sequence_privileged(&calldata
->arg
.seq_args
);
8351 msg
.rpc_argp
= &calldata
->arg
;
8352 msg
.rpc_resp
= &calldata
->res
;
8353 task_setup_data
.callback_data
= calldata
;
8354 task
= rpc_run_task(&task_setup_data
);
8356 status
= PTR_ERR(task
);
8359 status
= nfs4_wait_for_completion_rpc_task(task
);
8361 status
= task
->tk_status
;
8365 dprintk("<-- %s status=%d\n", __func__
, status
);
8370 nfs4_layoutget_prepare(struct rpc_task
*task
, void *calldata
)
8372 struct nfs4_layoutget
*lgp
= calldata
;
8373 struct nfs_server
*server
= NFS_SERVER(lgp
->args
.inode
);
8374 struct nfs4_session
*session
= nfs4_get_session(server
);
8376 dprintk("--> %s\n", __func__
);
8377 nfs41_setup_sequence(session
, &lgp
->args
.seq_args
,
8378 &lgp
->res
.seq_res
, task
);
8379 dprintk("<-- %s\n", __func__
);
8382 static void nfs4_layoutget_done(struct rpc_task
*task
, void *calldata
)
8384 struct nfs4_layoutget
*lgp
= calldata
;
8386 dprintk("--> %s\n", __func__
);
8387 nfs41_sequence_process(task
, &lgp
->res
.seq_res
);
8388 dprintk("<-- %s\n", __func__
);
8392 nfs4_layoutget_handle_exception(struct rpc_task
*task
,
8393 struct nfs4_layoutget
*lgp
, struct nfs4_exception
*exception
)
8395 struct inode
*inode
= lgp
->args
.inode
;
8396 struct nfs_server
*server
= NFS_SERVER(inode
);
8397 struct pnfs_layout_hdr
*lo
;
8398 int nfs4err
= task
->tk_status
;
8399 int err
, status
= 0;
8402 dprintk("--> %s tk_status => %d\n", __func__
, -task
->tk_status
);
8409 * NFS4ERR_LAYOUTUNAVAILABLE means we are not supposed to use pnfs
8410 * on the file. set tk_status to -ENODATA to tell upper layer to
8413 case -NFS4ERR_LAYOUTUNAVAILABLE
:
8417 * NFS4ERR_BADLAYOUT means the MDS cannot return a layout of
8418 * length lgp->args.minlength != 0 (see RFC5661 section 18.43.3).
8420 case -NFS4ERR_BADLAYOUT
:
8421 status
= -EOVERFLOW
;
8424 * NFS4ERR_LAYOUTTRYLATER is a conflict with another client
8425 * (or clients) writing to the same RAID stripe except when
8426 * the minlength argument is 0 (see RFC5661 section 18.43.3).
8428 * Treat it like we would RECALLCONFLICT -- we retry for a little
8429 * while, and then eventually give up.
8431 case -NFS4ERR_LAYOUTTRYLATER
:
8432 if (lgp
->args
.minlength
== 0) {
8433 status
= -EOVERFLOW
;
8438 case -NFS4ERR_RECALLCONFLICT
:
8439 status
= -ERECALLCONFLICT
;
8441 case -NFS4ERR_DELEG_REVOKED
:
8442 case -NFS4ERR_ADMIN_REVOKED
:
8443 case -NFS4ERR_EXPIRED
:
8444 case -NFS4ERR_BAD_STATEID
:
8445 exception
->timeout
= 0;
8446 spin_lock(&inode
->i_lock
);
8447 lo
= NFS_I(inode
)->layout
;
8448 /* If the open stateid was bad, then recover it. */
8449 if (!lo
|| test_bit(NFS_LAYOUT_INVALID_STID
, &lo
->plh_flags
) ||
8450 nfs4_stateid_match_other(&lgp
->args
.stateid
,
8451 &lgp
->args
.ctx
->state
->stateid
)) {
8452 spin_unlock(&inode
->i_lock
);
8453 exception
->state
= lgp
->args
.ctx
->state
;
8454 exception
->stateid
= &lgp
->args
.stateid
;
8459 * Mark the bad layout state as invalid, then retry
8461 pnfs_mark_layout_stateid_invalid(lo
, &head
);
8462 spin_unlock(&inode
->i_lock
);
8463 pnfs_free_lseg_list(&head
);
8468 err
= nfs4_handle_exception(server
, nfs4err
, exception
);
8470 if (exception
->retry
)
8476 dprintk("<-- %s\n", __func__
);
8480 static size_t max_response_pages(struct nfs_server
*server
)
8482 u32 max_resp_sz
= server
->nfs_client
->cl_session
->fc_attrs
.max_resp_sz
;
8483 return nfs_page_array_len(0, max_resp_sz
);
8486 static void nfs4_free_pages(struct page
**pages
, size_t size
)
8493 for (i
= 0; i
< size
; i
++) {
8496 __free_page(pages
[i
]);
8501 static struct page
**nfs4_alloc_pages(size_t size
, gfp_t gfp_flags
)
8503 struct page
**pages
;
8506 pages
= kcalloc(size
, sizeof(struct page
*), gfp_flags
);
8508 dprintk("%s: can't alloc array of %zu pages\n", __func__
, size
);
8512 for (i
= 0; i
< size
; i
++) {
8513 pages
[i
] = alloc_page(gfp_flags
);
8515 dprintk("%s: failed to allocate page\n", __func__
);
8516 nfs4_free_pages(pages
, size
);
8524 static void nfs4_layoutget_release(void *calldata
)
8526 struct nfs4_layoutget
*lgp
= calldata
;
8527 struct inode
*inode
= lgp
->args
.inode
;
8528 struct nfs_server
*server
= NFS_SERVER(inode
);
8529 size_t max_pages
= max_response_pages(server
);
8531 dprintk("--> %s\n", __func__
);
8532 nfs4_free_pages(lgp
->args
.layout
.pages
, max_pages
);
8533 pnfs_put_layout_hdr(NFS_I(inode
)->layout
);
8534 put_nfs_open_context(lgp
->args
.ctx
);
8536 dprintk("<-- %s\n", __func__
);
8539 static const struct rpc_call_ops nfs4_layoutget_call_ops
= {
8540 .rpc_call_prepare
= nfs4_layoutget_prepare
,
8541 .rpc_call_done
= nfs4_layoutget_done
,
8542 .rpc_release
= nfs4_layoutget_release
,
8545 struct pnfs_layout_segment
*
8546 nfs4_proc_layoutget(struct nfs4_layoutget
*lgp
, long *timeout
, gfp_t gfp_flags
)
8548 struct inode
*inode
= lgp
->args
.inode
;
8549 struct nfs_server
*server
= NFS_SERVER(inode
);
8550 size_t max_pages
= max_response_pages(server
);
8551 struct rpc_task
*task
;
8552 struct rpc_message msg
= {
8553 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LAYOUTGET
],
8554 .rpc_argp
= &lgp
->args
,
8555 .rpc_resp
= &lgp
->res
,
8556 .rpc_cred
= lgp
->cred
,
8558 struct rpc_task_setup task_setup_data
= {
8559 .rpc_client
= server
->client
,
8560 .rpc_message
= &msg
,
8561 .callback_ops
= &nfs4_layoutget_call_ops
,
8562 .callback_data
= lgp
,
8563 .flags
= RPC_TASK_ASYNC
,
8565 struct pnfs_layout_segment
*lseg
= NULL
;
8566 struct nfs4_exception exception
= {
8568 .timeout
= *timeout
,
8572 dprintk("--> %s\n", __func__
);
8574 /* nfs4_layoutget_release calls pnfs_put_layout_hdr */
8575 pnfs_get_layout_hdr(NFS_I(inode
)->layout
);
8577 lgp
->args
.layout
.pages
= nfs4_alloc_pages(max_pages
, gfp_flags
);
8578 if (!lgp
->args
.layout
.pages
) {
8579 nfs4_layoutget_release(lgp
);
8580 return ERR_PTR(-ENOMEM
);
8582 lgp
->args
.layout
.pglen
= max_pages
* PAGE_SIZE
;
8584 lgp
->res
.layoutp
= &lgp
->args
.layout
;
8585 lgp
->res
.seq_res
.sr_slot
= NULL
;
8586 nfs4_init_sequence(&lgp
->args
.seq_args
, &lgp
->res
.seq_res
, 0);
8588 task
= rpc_run_task(&task_setup_data
);
8590 return ERR_CAST(task
);
8591 status
= nfs4_wait_for_completion_rpc_task(task
);
8593 status
= nfs4_layoutget_handle_exception(task
, lgp
, &exception
);
8594 *timeout
= exception
.timeout
;
8597 trace_nfs4_layoutget(lgp
->args
.ctx
,
8603 /* if layoutp->len is 0, nfs4_layoutget_prepare called rpc_exit */
8604 if (status
== 0 && lgp
->res
.layoutp
->len
)
8605 lseg
= pnfs_layout_process(lgp
);
8606 nfs4_sequence_free_slot(&lgp
->res
.seq_res
);
8608 dprintk("<-- %s status=%d\n", __func__
, status
);
8610 return ERR_PTR(status
);
8615 nfs4_layoutreturn_prepare(struct rpc_task
*task
, void *calldata
)
8617 struct nfs4_layoutreturn
*lrp
= calldata
;
8619 dprintk("--> %s\n", __func__
);
8620 nfs41_setup_sequence(lrp
->clp
->cl_session
,
8621 &lrp
->args
.seq_args
,
8626 static void nfs4_layoutreturn_done(struct rpc_task
*task
, void *calldata
)
8628 struct nfs4_layoutreturn
*lrp
= calldata
;
8629 struct nfs_server
*server
;
8631 dprintk("--> %s\n", __func__
);
8633 if (!nfs41_sequence_process(task
, &lrp
->res
.seq_res
))
8636 server
= NFS_SERVER(lrp
->args
.inode
);
8637 switch (task
->tk_status
) {
8639 task
->tk_status
= 0;
8642 case -NFS4ERR_DELAY
:
8643 if (nfs4_async_handle_error(task
, server
, NULL
, NULL
) != -EAGAIN
)
8645 nfs4_sequence_free_slot(&lrp
->res
.seq_res
);
8646 rpc_restart_call_prepare(task
);
8649 dprintk("<-- %s\n", __func__
);
8652 static void nfs4_layoutreturn_release(void *calldata
)
8654 struct nfs4_layoutreturn
*lrp
= calldata
;
8655 struct pnfs_layout_hdr
*lo
= lrp
->args
.layout
;
8657 dprintk("--> %s\n", __func__
);
8658 pnfs_layoutreturn_free_lsegs(lo
, &lrp
->args
.stateid
, &lrp
->args
.range
,
8659 lrp
->res
.lrs_present
? &lrp
->res
.stateid
: NULL
);
8660 nfs4_sequence_free_slot(&lrp
->res
.seq_res
);
8661 if (lrp
->ld_private
.ops
&& lrp
->ld_private
.ops
->free
)
8662 lrp
->ld_private
.ops
->free(&lrp
->ld_private
);
8663 pnfs_put_layout_hdr(lrp
->args
.layout
);
8664 nfs_iput_and_deactive(lrp
->inode
);
8666 dprintk("<-- %s\n", __func__
);
8669 static const struct rpc_call_ops nfs4_layoutreturn_call_ops
= {
8670 .rpc_call_prepare
= nfs4_layoutreturn_prepare
,
8671 .rpc_call_done
= nfs4_layoutreturn_done
,
8672 .rpc_release
= nfs4_layoutreturn_release
,
8675 int nfs4_proc_layoutreturn(struct nfs4_layoutreturn
*lrp
, bool sync
)
8677 struct rpc_task
*task
;
8678 struct rpc_message msg
= {
8679 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LAYOUTRETURN
],
8680 .rpc_argp
= &lrp
->args
,
8681 .rpc_resp
= &lrp
->res
,
8682 .rpc_cred
= lrp
->cred
,
8684 struct rpc_task_setup task_setup_data
= {
8685 .rpc_client
= NFS_SERVER(lrp
->args
.inode
)->client
,
8686 .rpc_message
= &msg
,
8687 .callback_ops
= &nfs4_layoutreturn_call_ops
,
8688 .callback_data
= lrp
,
8692 nfs4_state_protect(NFS_SERVER(lrp
->args
.inode
)->nfs_client
,
8693 NFS_SP4_MACH_CRED_PNFS_CLEANUP
,
8694 &task_setup_data
.rpc_client
, &msg
);
8696 dprintk("--> %s\n", __func__
);
8698 lrp
->inode
= nfs_igrab_and_active(lrp
->args
.inode
);
8700 nfs4_layoutreturn_release(lrp
);
8703 task_setup_data
.flags
|= RPC_TASK_ASYNC
;
8705 nfs4_init_sequence(&lrp
->args
.seq_args
, &lrp
->res
.seq_res
, 1);
8706 task
= rpc_run_task(&task_setup_data
);
8708 return PTR_ERR(task
);
8710 status
= task
->tk_status
;
8711 trace_nfs4_layoutreturn(lrp
->args
.inode
, &lrp
->args
.stateid
, status
);
8712 dprintk("<-- %s status=%d\n", __func__
, status
);
8718 _nfs4_proc_getdeviceinfo(struct nfs_server
*server
,
8719 struct pnfs_device
*pdev
,
8720 struct rpc_cred
*cred
)
8722 struct nfs4_getdeviceinfo_args args
= {
8724 .notify_types
= NOTIFY_DEVICEID4_CHANGE
|
8725 NOTIFY_DEVICEID4_DELETE
,
8727 struct nfs4_getdeviceinfo_res res
= {
8730 struct rpc_message msg
= {
8731 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GETDEVICEINFO
],
8738 dprintk("--> %s\n", __func__
);
8739 status
= nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
8740 if (res
.notification
& ~args
.notify_types
)
8741 dprintk("%s: unsupported notification\n", __func__
);
8742 if (res
.notification
!= args
.notify_types
)
8745 dprintk("<-- %s status=%d\n", __func__
, status
);
8750 int nfs4_proc_getdeviceinfo(struct nfs_server
*server
,
8751 struct pnfs_device
*pdev
,
8752 struct rpc_cred
*cred
)
8754 struct nfs4_exception exception
= { };
8758 err
= nfs4_handle_exception(server
,
8759 _nfs4_proc_getdeviceinfo(server
, pdev
, cred
),
8761 } while (exception
.retry
);
8764 EXPORT_SYMBOL_GPL(nfs4_proc_getdeviceinfo
);
8766 static void nfs4_layoutcommit_prepare(struct rpc_task
*task
, void *calldata
)
8768 struct nfs4_layoutcommit_data
*data
= calldata
;
8769 struct nfs_server
*server
= NFS_SERVER(data
->args
.inode
);
8770 struct nfs4_session
*session
= nfs4_get_session(server
);
8772 nfs41_setup_sequence(session
,
8773 &data
->args
.seq_args
,
8779 nfs4_layoutcommit_done(struct rpc_task
*task
, void *calldata
)
8781 struct nfs4_layoutcommit_data
*data
= calldata
;
8782 struct nfs_server
*server
= NFS_SERVER(data
->args
.inode
);
8784 if (!nfs41_sequence_done(task
, &data
->res
.seq_res
))
8787 switch (task
->tk_status
) { /* Just ignore these failures */
8788 case -NFS4ERR_DELEG_REVOKED
: /* layout was recalled */
8789 case -NFS4ERR_BADIOMODE
: /* no IOMODE_RW layout for range */
8790 case -NFS4ERR_BADLAYOUT
: /* no layout */
8791 case -NFS4ERR_GRACE
: /* loca_recalim always false */
8792 task
->tk_status
= 0;
8796 if (nfs4_async_handle_error(task
, server
, NULL
, NULL
) == -EAGAIN
) {
8797 rpc_restart_call_prepare(task
);
8803 static void nfs4_layoutcommit_release(void *calldata
)
8805 struct nfs4_layoutcommit_data
*data
= calldata
;
8807 pnfs_cleanup_layoutcommit(data
);
8808 nfs_post_op_update_inode_force_wcc(data
->args
.inode
,
8810 put_rpccred(data
->cred
);
8811 nfs_iput_and_deactive(data
->inode
);
8815 static const struct rpc_call_ops nfs4_layoutcommit_ops
= {
8816 .rpc_call_prepare
= nfs4_layoutcommit_prepare
,
8817 .rpc_call_done
= nfs4_layoutcommit_done
,
8818 .rpc_release
= nfs4_layoutcommit_release
,
8822 nfs4_proc_layoutcommit(struct nfs4_layoutcommit_data
*data
, bool sync
)
8824 struct rpc_message msg
= {
8825 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LAYOUTCOMMIT
],
8826 .rpc_argp
= &data
->args
,
8827 .rpc_resp
= &data
->res
,
8828 .rpc_cred
= data
->cred
,
8830 struct rpc_task_setup task_setup_data
= {
8831 .task
= &data
->task
,
8832 .rpc_client
= NFS_CLIENT(data
->args
.inode
),
8833 .rpc_message
= &msg
,
8834 .callback_ops
= &nfs4_layoutcommit_ops
,
8835 .callback_data
= data
,
8837 struct rpc_task
*task
;
8840 dprintk("NFS: initiating layoutcommit call. sync %d "
8841 "lbw: %llu inode %lu\n", sync
,
8842 data
->args
.lastbytewritten
,
8843 data
->args
.inode
->i_ino
);
8846 data
->inode
= nfs_igrab_and_active(data
->args
.inode
);
8847 if (data
->inode
== NULL
) {
8848 nfs4_layoutcommit_release(data
);
8851 task_setup_data
.flags
= RPC_TASK_ASYNC
;
8853 nfs4_init_sequence(&data
->args
.seq_args
, &data
->res
.seq_res
, 1);
8854 task
= rpc_run_task(&task_setup_data
);
8856 return PTR_ERR(task
);
8858 status
= task
->tk_status
;
8859 trace_nfs4_layoutcommit(data
->args
.inode
, &data
->args
.stateid
, status
);
8860 dprintk("%s: status %d\n", __func__
, status
);
8866 * Use the state managment nfs_client cl_rpcclient, which uses krb5i (if
8867 * possible) as per RFC3530bis and RFC5661 Security Considerations sections
8870 _nfs41_proc_secinfo_no_name(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
8871 struct nfs_fsinfo
*info
,
8872 struct nfs4_secinfo_flavors
*flavors
, bool use_integrity
)
8874 struct nfs41_secinfo_no_name_args args
= {
8875 .style
= SECINFO_STYLE_CURRENT_FH
,
8877 struct nfs4_secinfo_res res
= {
8880 struct rpc_message msg
= {
8881 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SECINFO_NO_NAME
],
8885 struct rpc_clnt
*clnt
= server
->client
;
8886 struct rpc_cred
*cred
= NULL
;
8889 if (use_integrity
) {
8890 clnt
= server
->nfs_client
->cl_rpcclient
;
8891 cred
= nfs4_get_clid_cred(server
->nfs_client
);
8892 msg
.rpc_cred
= cred
;
8895 dprintk("--> %s\n", __func__
);
8896 status
= nfs4_call_sync(clnt
, server
, &msg
, &args
.seq_args
,
8898 dprintk("<-- %s status=%d\n", __func__
, status
);
8907 nfs41_proc_secinfo_no_name(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
8908 struct nfs_fsinfo
*info
, struct nfs4_secinfo_flavors
*flavors
)
8910 struct nfs4_exception exception
= { };
8913 /* first try using integrity protection */
8914 err
= -NFS4ERR_WRONGSEC
;
8916 /* try to use integrity protection with machine cred */
8917 if (_nfs4_is_integrity_protected(server
->nfs_client
))
8918 err
= _nfs41_proc_secinfo_no_name(server
, fhandle
, info
,
8922 * if unable to use integrity protection, or SECINFO with
8923 * integrity protection returns NFS4ERR_WRONGSEC (which is
8924 * disallowed by spec, but exists in deployed servers) use
8925 * the current filesystem's rpc_client and the user cred.
8927 if (err
== -NFS4ERR_WRONGSEC
)
8928 err
= _nfs41_proc_secinfo_no_name(server
, fhandle
, info
,
8933 case -NFS4ERR_WRONGSEC
:
8937 err
= nfs4_handle_exception(server
, err
, &exception
);
8939 } while (exception
.retry
);
8945 nfs41_find_root_sec(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
8946 struct nfs_fsinfo
*info
)
8950 rpc_authflavor_t flavor
= RPC_AUTH_MAXFLAVOR
;
8951 struct nfs4_secinfo_flavors
*flavors
;
8952 struct nfs4_secinfo4
*secinfo
;
8955 page
= alloc_page(GFP_KERNEL
);
8961 flavors
= page_address(page
);
8962 err
= nfs41_proc_secinfo_no_name(server
, fhandle
, info
, flavors
);
8965 * Fall back on "guess and check" method if
8966 * the server doesn't support SECINFO_NO_NAME
8968 if (err
== -NFS4ERR_WRONGSEC
|| err
== -ENOTSUPP
) {
8969 err
= nfs4_find_root_sec(server
, fhandle
, info
);
8975 for (i
= 0; i
< flavors
->num_flavors
; i
++) {
8976 secinfo
= &flavors
->flavors
[i
];
8978 switch (secinfo
->flavor
) {
8982 flavor
= rpcauth_get_pseudoflavor(secinfo
->flavor
,
8983 &secinfo
->flavor_info
);
8986 flavor
= RPC_AUTH_MAXFLAVOR
;
8990 if (!nfs_auth_info_match(&server
->auth_info
, flavor
))
8991 flavor
= RPC_AUTH_MAXFLAVOR
;
8993 if (flavor
!= RPC_AUTH_MAXFLAVOR
) {
8994 err
= nfs4_lookup_root_sec(server
, fhandle
,
9001 if (flavor
== RPC_AUTH_MAXFLAVOR
)
9012 static int _nfs41_test_stateid(struct nfs_server
*server
,
9013 nfs4_stateid
*stateid
,
9014 struct rpc_cred
*cred
)
9017 struct nfs41_test_stateid_args args
= {
9020 struct nfs41_test_stateid_res res
;
9021 struct rpc_message msg
= {
9022 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_TEST_STATEID
],
9027 struct rpc_clnt
*rpc_client
= server
->client
;
9029 nfs4_state_protect(server
->nfs_client
, NFS_SP4_MACH_CRED_STATEID
,
9032 dprintk("NFS call test_stateid %p\n", stateid
);
9033 nfs4_init_sequence(&args
.seq_args
, &res
.seq_res
, 0);
9034 nfs4_set_sequence_privileged(&args
.seq_args
);
9035 status
= nfs4_call_sync_sequence(rpc_client
, server
, &msg
,
9036 &args
.seq_args
, &res
.seq_res
);
9037 if (status
!= NFS_OK
) {
9038 dprintk("NFS reply test_stateid: failed, %d\n", status
);
9041 dprintk("NFS reply test_stateid: succeeded, %d\n", -res
.status
);
9045 static void nfs4_handle_delay_or_session_error(struct nfs_server
*server
,
9046 int err
, struct nfs4_exception
*exception
)
9048 exception
->retry
= 0;
9050 case -NFS4ERR_DELAY
:
9051 case -NFS4ERR_RETRY_UNCACHED_REP
:
9052 nfs4_handle_exception(server
, err
, exception
);
9054 case -NFS4ERR_BADSESSION
:
9055 case -NFS4ERR_BADSLOT
:
9056 case -NFS4ERR_BAD_HIGH_SLOT
:
9057 case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION
:
9058 case -NFS4ERR_DEADSESSION
:
9059 nfs4_do_handle_exception(server
, err
, exception
);
9064 * nfs41_test_stateid - perform a TEST_STATEID operation
9066 * @server: server / transport on which to perform the operation
9067 * @stateid: state ID to test
9070 * Returns NFS_OK if the server recognizes that "stateid" is valid.
9071 * Otherwise a negative NFS4ERR value is returned if the operation
9072 * failed or the state ID is not currently valid.
9074 static int nfs41_test_stateid(struct nfs_server
*server
,
9075 nfs4_stateid
*stateid
,
9076 struct rpc_cred
*cred
)
9078 struct nfs4_exception exception
= { };
9081 err
= _nfs41_test_stateid(server
, stateid
, cred
);
9082 nfs4_handle_delay_or_session_error(server
, err
, &exception
);
9083 } while (exception
.retry
);
9087 struct nfs_free_stateid_data
{
9088 struct nfs_server
*server
;
9089 struct nfs41_free_stateid_args args
;
9090 struct nfs41_free_stateid_res res
;
9093 static void nfs41_free_stateid_prepare(struct rpc_task
*task
, void *calldata
)
9095 struct nfs_free_stateid_data
*data
= calldata
;
9096 nfs41_setup_sequence(nfs4_get_session(data
->server
),
9097 &data
->args
.seq_args
,
9102 static void nfs41_free_stateid_done(struct rpc_task
*task
, void *calldata
)
9104 struct nfs_free_stateid_data
*data
= calldata
;
9106 nfs41_sequence_done(task
, &data
->res
.seq_res
);
9108 switch (task
->tk_status
) {
9109 case -NFS4ERR_DELAY
:
9110 if (nfs4_async_handle_error(task
, data
->server
, NULL
, NULL
) == -EAGAIN
)
9111 rpc_restart_call_prepare(task
);
9115 static void nfs41_free_stateid_release(void *calldata
)
9120 static const struct rpc_call_ops nfs41_free_stateid_ops
= {
9121 .rpc_call_prepare
= nfs41_free_stateid_prepare
,
9122 .rpc_call_done
= nfs41_free_stateid_done
,
9123 .rpc_release
= nfs41_free_stateid_release
,
9126 static struct rpc_task
*_nfs41_free_stateid(struct nfs_server
*server
,
9127 const nfs4_stateid
*stateid
,
9128 struct rpc_cred
*cred
,
9131 struct rpc_message msg
= {
9132 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_FREE_STATEID
],
9135 struct rpc_task_setup task_setup
= {
9136 .rpc_client
= server
->client
,
9137 .rpc_message
= &msg
,
9138 .callback_ops
= &nfs41_free_stateid_ops
,
9139 .flags
= RPC_TASK_ASYNC
,
9141 struct nfs_free_stateid_data
*data
;
9143 nfs4_state_protect(server
->nfs_client
, NFS_SP4_MACH_CRED_STATEID
,
9144 &task_setup
.rpc_client
, &msg
);
9146 dprintk("NFS call free_stateid %p\n", stateid
);
9147 data
= kmalloc(sizeof(*data
), GFP_NOFS
);
9149 return ERR_PTR(-ENOMEM
);
9150 data
->server
= server
;
9151 nfs4_stateid_copy(&data
->args
.stateid
, stateid
);
9153 task_setup
.callback_data
= data
;
9155 msg
.rpc_argp
= &data
->args
;
9156 msg
.rpc_resp
= &data
->res
;
9157 nfs4_init_sequence(&data
->args
.seq_args
, &data
->res
.seq_res
, 1);
9159 nfs4_set_sequence_privileged(&data
->args
.seq_args
);
9161 return rpc_run_task(&task_setup
);
9165 * nfs41_free_stateid - perform a FREE_STATEID operation
9167 * @server: server / transport on which to perform the operation
9168 * @stateid: state ID to release
9170 * @is_recovery: set to true if this call needs to be privileged
9172 * Note: this function is always asynchronous.
9174 static int nfs41_free_stateid(struct nfs_server
*server
,
9175 const nfs4_stateid
*stateid
,
9176 struct rpc_cred
*cred
,
9179 struct rpc_task
*task
;
9181 task
= _nfs41_free_stateid(server
, stateid
, cred
, is_recovery
);
9183 return PTR_ERR(task
);
9189 nfs41_free_lock_state(struct nfs_server
*server
, struct nfs4_lock_state
*lsp
)
9191 struct rpc_cred
*cred
= lsp
->ls_state
->owner
->so_cred
;
9193 nfs41_free_stateid(server
, &lsp
->ls_stateid
, cred
, false);
9194 nfs4_free_lock_state(server
, lsp
);
9197 static bool nfs41_match_stateid(const nfs4_stateid
*s1
,
9198 const nfs4_stateid
*s2
)
9200 if (s1
->type
!= s2
->type
)
9203 if (memcmp(s1
->other
, s2
->other
, sizeof(s1
->other
)) != 0)
9206 if (s1
->seqid
== s2
->seqid
)
9208 if (s1
->seqid
== 0 || s2
->seqid
== 0)
9214 #endif /* CONFIG_NFS_V4_1 */
9216 static bool nfs4_match_stateid(const nfs4_stateid
*s1
,
9217 const nfs4_stateid
*s2
)
9219 return nfs4_stateid_match(s1
, s2
);
9223 static const struct nfs4_state_recovery_ops nfs40_reboot_recovery_ops
= {
9224 .owner_flag_bit
= NFS_OWNER_RECLAIM_REBOOT
,
9225 .state_flag_bit
= NFS_STATE_RECLAIM_REBOOT
,
9226 .recover_open
= nfs4_open_reclaim
,
9227 .recover_lock
= nfs4_lock_reclaim
,
9228 .establish_clid
= nfs4_init_clientid
,
9229 .detect_trunking
= nfs40_discover_server_trunking
,
9232 #if defined(CONFIG_NFS_V4_1)
9233 static const struct nfs4_state_recovery_ops nfs41_reboot_recovery_ops
= {
9234 .owner_flag_bit
= NFS_OWNER_RECLAIM_REBOOT
,
9235 .state_flag_bit
= NFS_STATE_RECLAIM_REBOOT
,
9236 .recover_open
= nfs4_open_reclaim
,
9237 .recover_lock
= nfs4_lock_reclaim
,
9238 .establish_clid
= nfs41_init_clientid
,
9239 .reclaim_complete
= nfs41_proc_reclaim_complete
,
9240 .detect_trunking
= nfs41_discover_server_trunking
,
9242 #endif /* CONFIG_NFS_V4_1 */
9244 static const struct nfs4_state_recovery_ops nfs40_nograce_recovery_ops
= {
9245 .owner_flag_bit
= NFS_OWNER_RECLAIM_NOGRACE
,
9246 .state_flag_bit
= NFS_STATE_RECLAIM_NOGRACE
,
9247 .recover_open
= nfs40_open_expired
,
9248 .recover_lock
= nfs4_lock_expired
,
9249 .establish_clid
= nfs4_init_clientid
,
9252 #if defined(CONFIG_NFS_V4_1)
9253 static const struct nfs4_state_recovery_ops nfs41_nograce_recovery_ops
= {
9254 .owner_flag_bit
= NFS_OWNER_RECLAIM_NOGRACE
,
9255 .state_flag_bit
= NFS_STATE_RECLAIM_NOGRACE
,
9256 .recover_open
= nfs41_open_expired
,
9257 .recover_lock
= nfs41_lock_expired
,
9258 .establish_clid
= nfs41_init_clientid
,
9260 #endif /* CONFIG_NFS_V4_1 */
9262 static const struct nfs4_state_maintenance_ops nfs40_state_renewal_ops
= {
9263 .sched_state_renewal
= nfs4_proc_async_renew
,
9264 .get_state_renewal_cred_locked
= nfs4_get_renew_cred_locked
,
9265 .renew_lease
= nfs4_proc_renew
,
9268 #if defined(CONFIG_NFS_V4_1)
9269 static const struct nfs4_state_maintenance_ops nfs41_state_renewal_ops
= {
9270 .sched_state_renewal
= nfs41_proc_async_sequence
,
9271 .get_state_renewal_cred_locked
= nfs4_get_machine_cred_locked
,
9272 .renew_lease
= nfs4_proc_sequence
,
9276 static const struct nfs4_mig_recovery_ops nfs40_mig_recovery_ops
= {
9277 .get_locations
= _nfs40_proc_get_locations
,
9278 .fsid_present
= _nfs40_proc_fsid_present
,
9281 #if defined(CONFIG_NFS_V4_1)
9282 static const struct nfs4_mig_recovery_ops nfs41_mig_recovery_ops
= {
9283 .get_locations
= _nfs41_proc_get_locations
,
9284 .fsid_present
= _nfs41_proc_fsid_present
,
9286 #endif /* CONFIG_NFS_V4_1 */
9288 static const struct nfs4_minor_version_ops nfs_v4_0_minor_ops
= {
9290 .init_caps
= NFS_CAP_READDIRPLUS
9291 | NFS_CAP_ATOMIC_OPEN
9292 | NFS_CAP_POSIX_LOCK
,
9293 .init_client
= nfs40_init_client
,
9294 .shutdown_client
= nfs40_shutdown_client
,
9295 .match_stateid
= nfs4_match_stateid
,
9296 .find_root_sec
= nfs4_find_root_sec
,
9297 .free_lock_state
= nfs4_release_lockowner
,
9298 .test_and_free_expired
= nfs40_test_and_free_expired_stateid
,
9299 .alloc_seqid
= nfs_alloc_seqid
,
9300 .call_sync_ops
= &nfs40_call_sync_ops
,
9301 .reboot_recovery_ops
= &nfs40_reboot_recovery_ops
,
9302 .nograce_recovery_ops
= &nfs40_nograce_recovery_ops
,
9303 .state_renewal_ops
= &nfs40_state_renewal_ops
,
9304 .mig_recovery_ops
= &nfs40_mig_recovery_ops
,
9307 #if defined(CONFIG_NFS_V4_1)
9308 static struct nfs_seqid
*
9309 nfs_alloc_no_seqid(struct nfs_seqid_counter
*arg1
, gfp_t arg2
)
9314 static const struct nfs4_minor_version_ops nfs_v4_1_minor_ops
= {
9316 .init_caps
= NFS_CAP_READDIRPLUS
9317 | NFS_CAP_ATOMIC_OPEN
9318 | NFS_CAP_POSIX_LOCK
9319 | NFS_CAP_STATEID_NFSV41
9320 | NFS_CAP_ATOMIC_OPEN_V1
,
9321 .init_client
= nfs41_init_client
,
9322 .shutdown_client
= nfs41_shutdown_client
,
9323 .match_stateid
= nfs41_match_stateid
,
9324 .find_root_sec
= nfs41_find_root_sec
,
9325 .free_lock_state
= nfs41_free_lock_state
,
9326 .test_and_free_expired
= nfs41_test_and_free_expired_stateid
,
9327 .alloc_seqid
= nfs_alloc_no_seqid
,
9328 .session_trunk
= nfs4_test_session_trunk
,
9329 .call_sync_ops
= &nfs41_call_sync_ops
,
9330 .reboot_recovery_ops
= &nfs41_reboot_recovery_ops
,
9331 .nograce_recovery_ops
= &nfs41_nograce_recovery_ops
,
9332 .state_renewal_ops
= &nfs41_state_renewal_ops
,
9333 .mig_recovery_ops
= &nfs41_mig_recovery_ops
,
9337 #if defined(CONFIG_NFS_V4_2)
9338 static const struct nfs4_minor_version_ops nfs_v4_2_minor_ops
= {
9340 .init_caps
= NFS_CAP_READDIRPLUS
9341 | NFS_CAP_ATOMIC_OPEN
9342 | NFS_CAP_POSIX_LOCK
9343 | NFS_CAP_STATEID_NFSV41
9344 | NFS_CAP_ATOMIC_OPEN_V1
9347 | NFS_CAP_DEALLOCATE
9349 | NFS_CAP_LAYOUTSTATS
9351 .init_client
= nfs41_init_client
,
9352 .shutdown_client
= nfs41_shutdown_client
,
9353 .match_stateid
= nfs41_match_stateid
,
9354 .find_root_sec
= nfs41_find_root_sec
,
9355 .free_lock_state
= nfs41_free_lock_state
,
9356 .call_sync_ops
= &nfs41_call_sync_ops
,
9357 .test_and_free_expired
= nfs41_test_and_free_expired_stateid
,
9358 .alloc_seqid
= nfs_alloc_no_seqid
,
9359 .session_trunk
= nfs4_test_session_trunk
,
9360 .reboot_recovery_ops
= &nfs41_reboot_recovery_ops
,
9361 .nograce_recovery_ops
= &nfs41_nograce_recovery_ops
,
9362 .state_renewal_ops
= &nfs41_state_renewal_ops
,
9363 .mig_recovery_ops
= &nfs41_mig_recovery_ops
,
9367 const struct nfs4_minor_version_ops
*nfs_v4_minor_ops
[] = {
9368 [0] = &nfs_v4_0_minor_ops
,
9369 #if defined(CONFIG_NFS_V4_1)
9370 [1] = &nfs_v4_1_minor_ops
,
9372 #if defined(CONFIG_NFS_V4_2)
9373 [2] = &nfs_v4_2_minor_ops
,
9377 static ssize_t
nfs4_listxattr(struct dentry
*dentry
, char *list
, size_t size
)
9379 ssize_t error
, error2
;
9381 error
= generic_listxattr(dentry
, list
, size
);
9389 error2
= nfs4_listxattr_nfs4_label(d_inode(dentry
), list
, size
);
9392 return error
+ error2
;
9395 static const struct inode_operations nfs4_dir_inode_operations
= {
9396 .create
= nfs_create
,
9397 .lookup
= nfs_lookup
,
9398 .atomic_open
= nfs_atomic_open
,
9400 .unlink
= nfs_unlink
,
9401 .symlink
= nfs_symlink
,
9405 .rename
= nfs_rename
,
9406 .permission
= nfs_permission
,
9407 .getattr
= nfs_getattr
,
9408 .setattr
= nfs_setattr
,
9409 .listxattr
= nfs4_listxattr
,
9412 static const struct inode_operations nfs4_file_inode_operations
= {
9413 .permission
= nfs_permission
,
9414 .getattr
= nfs_getattr
,
9415 .setattr
= nfs_setattr
,
9416 .listxattr
= nfs4_listxattr
,
9419 const struct nfs_rpc_ops nfs_v4_clientops
= {
9420 .version
= 4, /* protocol version */
9421 .dentry_ops
= &nfs4_dentry_operations
,
9422 .dir_inode_ops
= &nfs4_dir_inode_operations
,
9423 .file_inode_ops
= &nfs4_file_inode_operations
,
9424 .file_ops
= &nfs4_file_operations
,
9425 .getroot
= nfs4_proc_get_root
,
9426 .submount
= nfs4_submount
,
9427 .try_mount
= nfs4_try_mount
,
9428 .getattr
= nfs4_proc_getattr
,
9429 .setattr
= nfs4_proc_setattr
,
9430 .lookup
= nfs4_proc_lookup
,
9431 .access
= nfs4_proc_access
,
9432 .readlink
= nfs4_proc_readlink
,
9433 .create
= nfs4_proc_create
,
9434 .remove
= nfs4_proc_remove
,
9435 .unlink_setup
= nfs4_proc_unlink_setup
,
9436 .unlink_rpc_prepare
= nfs4_proc_unlink_rpc_prepare
,
9437 .unlink_done
= nfs4_proc_unlink_done
,
9438 .rename_setup
= nfs4_proc_rename_setup
,
9439 .rename_rpc_prepare
= nfs4_proc_rename_rpc_prepare
,
9440 .rename_done
= nfs4_proc_rename_done
,
9441 .link
= nfs4_proc_link
,
9442 .symlink
= nfs4_proc_symlink
,
9443 .mkdir
= nfs4_proc_mkdir
,
9444 .rmdir
= nfs4_proc_remove
,
9445 .readdir
= nfs4_proc_readdir
,
9446 .mknod
= nfs4_proc_mknod
,
9447 .statfs
= nfs4_proc_statfs
,
9448 .fsinfo
= nfs4_proc_fsinfo
,
9449 .pathconf
= nfs4_proc_pathconf
,
9450 .set_capabilities
= nfs4_server_capabilities
,
9451 .decode_dirent
= nfs4_decode_dirent
,
9452 .pgio_rpc_prepare
= nfs4_proc_pgio_rpc_prepare
,
9453 .read_setup
= nfs4_proc_read_setup
,
9454 .read_done
= nfs4_read_done
,
9455 .write_setup
= nfs4_proc_write_setup
,
9456 .write_done
= nfs4_write_done
,
9457 .commit_setup
= nfs4_proc_commit_setup
,
9458 .commit_rpc_prepare
= nfs4_proc_commit_rpc_prepare
,
9459 .commit_done
= nfs4_commit_done
,
9460 .lock
= nfs4_proc_lock
,
9461 .clear_acl_cache
= nfs4_zap_acl_attr
,
9462 .close_context
= nfs4_close_context
,
9463 .open_context
= nfs4_atomic_open
,
9464 .have_delegation
= nfs4_have_delegation
,
9465 .return_delegation
= nfs4_inode_return_delegation
,
9466 .alloc_client
= nfs4_alloc_client
,
9467 .init_client
= nfs4_init_client
,
9468 .free_client
= nfs4_free_client
,
9469 .create_server
= nfs4_create_server
,
9470 .clone_server
= nfs_clone_server
,
9473 static const struct xattr_handler nfs4_xattr_nfs4_acl_handler
= {
9474 .name
= XATTR_NAME_NFSV4_ACL
,
9475 .list
= nfs4_xattr_list_nfs4_acl
,
9476 .get
= nfs4_xattr_get_nfs4_acl
,
9477 .set
= nfs4_xattr_set_nfs4_acl
,
9480 const struct xattr_handler
*nfs4_xattr_handlers
[] = {
9481 &nfs4_xattr_nfs4_acl_handler
,
9482 #ifdef CONFIG_NFS_V4_SECURITY_LABEL
9483 &nfs4_xattr_nfs4_label_handler
,