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 nfs4_state
*state
, 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_CHANGE
230 | FATTR4_WORD0_FILEID
,
233 const u32 nfs4_statfs_bitmap
[3] = {
234 FATTR4_WORD0_FILES_AVAIL
235 | FATTR4_WORD0_FILES_FREE
236 | FATTR4_WORD0_FILES_TOTAL
,
237 FATTR4_WORD1_SPACE_AVAIL
238 | FATTR4_WORD1_SPACE_FREE
239 | FATTR4_WORD1_SPACE_TOTAL
242 const u32 nfs4_pathconf_bitmap
[3] = {
244 | FATTR4_WORD0_MAXNAME
,
248 const u32 nfs4_fsinfo_bitmap
[3] = { FATTR4_WORD0_MAXFILESIZE
249 | FATTR4_WORD0_MAXREAD
250 | FATTR4_WORD0_MAXWRITE
251 | FATTR4_WORD0_LEASE_TIME
,
252 FATTR4_WORD1_TIME_DELTA
253 | FATTR4_WORD1_FS_LAYOUT_TYPES
,
254 FATTR4_WORD2_LAYOUT_BLKSIZE
255 | FATTR4_WORD2_CLONE_BLKSIZE
258 const u32 nfs4_fs_locations_bitmap
[3] = {
260 | FATTR4_WORD0_CHANGE
263 | FATTR4_WORD0_FILEID
264 | FATTR4_WORD0_FS_LOCATIONS
,
266 | FATTR4_WORD1_NUMLINKS
268 | FATTR4_WORD1_OWNER_GROUP
269 | FATTR4_WORD1_RAWDEV
270 | FATTR4_WORD1_SPACE_USED
271 | FATTR4_WORD1_TIME_ACCESS
272 | FATTR4_WORD1_TIME_METADATA
273 | FATTR4_WORD1_TIME_MODIFY
274 | FATTR4_WORD1_MOUNTED_ON_FILEID
,
277 static void nfs4_setup_readdir(u64 cookie
, __be32
*verifier
, struct dentry
*dentry
,
278 struct nfs4_readdir_arg
*readdir
)
283 readdir
->cookie
= cookie
;
284 memcpy(&readdir
->verifier
, verifier
, sizeof(readdir
->verifier
));
289 memset(&readdir
->verifier
, 0, sizeof(readdir
->verifier
));
294 * NFSv4 servers do not return entries for '.' and '..'
295 * Therefore, we fake these entries here. We let '.'
296 * have cookie 0 and '..' have cookie 1. Note that
297 * when talking to the server, we always send cookie 0
300 start
= p
= kmap_atomic(*readdir
->pages
);
303 *p
++ = xdr_one
; /* next */
304 *p
++ = xdr_zero
; /* cookie, first word */
305 *p
++ = xdr_one
; /* cookie, second word */
306 *p
++ = xdr_one
; /* entry len */
307 memcpy(p
, ".\0\0\0", 4); /* entry */
309 *p
++ = xdr_one
; /* bitmap length */
310 *p
++ = htonl(FATTR4_WORD0_FILEID
); /* bitmap */
311 *p
++ = htonl(8); /* attribute buffer length */
312 p
= xdr_encode_hyper(p
, NFS_FILEID(d_inode(dentry
)));
315 *p
++ = xdr_one
; /* next */
316 *p
++ = xdr_zero
; /* cookie, first word */
317 *p
++ = xdr_two
; /* cookie, second word */
318 *p
++ = xdr_two
; /* entry len */
319 memcpy(p
, "..\0\0", 4); /* entry */
321 *p
++ = xdr_one
; /* bitmap length */
322 *p
++ = htonl(FATTR4_WORD0_FILEID
); /* bitmap */
323 *p
++ = htonl(8); /* attribute buffer length */
324 p
= xdr_encode_hyper(p
, NFS_FILEID(d_inode(dentry
->d_parent
)));
326 readdir
->pgbase
= (char *)p
- (char *)start
;
327 readdir
->count
-= readdir
->pgbase
;
328 kunmap_atomic(start
);
331 static void nfs4_test_and_free_stateid(struct nfs_server
*server
,
332 nfs4_stateid
*stateid
,
333 struct rpc_cred
*cred
)
335 const struct nfs4_minor_version_ops
*ops
= server
->nfs_client
->cl_mvops
;
337 ops
->test_and_free_expired(server
, stateid
, cred
);
340 static void __nfs4_free_revoked_stateid(struct nfs_server
*server
,
341 nfs4_stateid
*stateid
,
342 struct rpc_cred
*cred
)
344 stateid
->type
= NFS4_REVOKED_STATEID_TYPE
;
345 nfs4_test_and_free_stateid(server
, stateid
, cred
);
348 static void nfs4_free_revoked_stateid(struct nfs_server
*server
,
349 const nfs4_stateid
*stateid
,
350 struct rpc_cred
*cred
)
354 nfs4_stateid_copy(&tmp
, stateid
);
355 __nfs4_free_revoked_stateid(server
, &tmp
, cred
);
358 static long nfs4_update_delay(long *timeout
)
362 return NFS4_POLL_RETRY_MAX
;
364 *timeout
= NFS4_POLL_RETRY_MIN
;
365 if (*timeout
> NFS4_POLL_RETRY_MAX
)
366 *timeout
= NFS4_POLL_RETRY_MAX
;
372 static int nfs4_delay(struct rpc_clnt
*clnt
, long *timeout
)
378 freezable_schedule_timeout_killable_unsafe(
379 nfs4_update_delay(timeout
));
380 if (fatal_signal_pending(current
))
385 /* This is the error handling routine for processes that are allowed
388 static int nfs4_do_handle_exception(struct nfs_server
*server
,
389 int errorcode
, struct nfs4_exception
*exception
)
391 struct nfs_client
*clp
= server
->nfs_client
;
392 struct nfs4_state
*state
= exception
->state
;
393 const nfs4_stateid
*stateid
= exception
->stateid
;
394 struct inode
*inode
= exception
->inode
;
397 exception
->delay
= 0;
398 exception
->recovering
= 0;
399 exception
->retry
= 0;
401 if (stateid
== NULL
&& state
!= NULL
)
402 stateid
= &state
->stateid
;
407 case -NFS4ERR_DELEG_REVOKED
:
408 case -NFS4ERR_ADMIN_REVOKED
:
409 case -NFS4ERR_EXPIRED
:
410 case -NFS4ERR_BAD_STATEID
:
411 if (inode
!= NULL
&& stateid
!= NULL
) {
412 nfs_inode_find_state_and_recover(inode
,
414 goto wait_on_recovery
;
416 case -NFS4ERR_OPENMODE
:
420 err
= nfs_async_inode_return_delegation(inode
,
423 goto wait_on_recovery
;
424 if (stateid
!= NULL
&& stateid
->type
== NFS4_DELEGATION_STATEID_TYPE
) {
425 exception
->retry
= 1;
431 ret
= nfs4_schedule_stateid_recovery(server
, state
);
434 goto wait_on_recovery
;
435 case -NFS4ERR_STALE_STATEID
:
436 case -NFS4ERR_STALE_CLIENTID
:
437 nfs4_schedule_lease_recovery(clp
);
438 goto wait_on_recovery
;
440 ret
= nfs4_schedule_migration_recovery(server
);
443 goto wait_on_recovery
;
444 case -NFS4ERR_LEASE_MOVED
:
445 nfs4_schedule_lease_moved_recovery(clp
);
446 goto wait_on_recovery
;
447 #if defined(CONFIG_NFS_V4_1)
448 case -NFS4ERR_BADSESSION
:
449 case -NFS4ERR_BADSLOT
:
450 case -NFS4ERR_BAD_HIGH_SLOT
:
451 case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION
:
452 case -NFS4ERR_DEADSESSION
:
453 case -NFS4ERR_SEQ_FALSE_RETRY
:
454 case -NFS4ERR_SEQ_MISORDERED
:
455 dprintk("%s ERROR: %d Reset session\n", __func__
,
457 nfs4_schedule_session_recovery(clp
->cl_session
, errorcode
);
458 goto wait_on_recovery
;
459 #endif /* defined(CONFIG_NFS_V4_1) */
460 case -NFS4ERR_FILE_OPEN
:
461 if (exception
->timeout
> HZ
) {
462 /* We have retried a decent amount, time to
469 nfs_inc_server_stats(server
, NFSIOS_DELAY
);
471 case -NFS4ERR_LAYOUTTRYLATER
:
472 case -NFS4ERR_RECALLCONFLICT
:
473 exception
->delay
= 1;
476 case -NFS4ERR_RETRY_UNCACHED_REP
:
477 case -NFS4ERR_OLD_STATEID
:
478 exception
->retry
= 1;
480 case -NFS4ERR_BADOWNER
:
481 /* The following works around a Linux server bug! */
482 case -NFS4ERR_BADNAME
:
483 if (server
->caps
& NFS_CAP_UIDGID_NOMAP
) {
484 server
->caps
&= ~NFS_CAP_UIDGID_NOMAP
;
485 exception
->retry
= 1;
486 printk(KERN_WARNING
"NFS: v4 server %s "
487 "does not accept raw "
489 "Reenabling the idmapper.\n",
490 server
->nfs_client
->cl_hostname
);
493 /* We failed to handle the error */
494 return nfs4_map_errors(ret
);
496 exception
->recovering
= 1;
500 /* This is the error handling routine for processes that are allowed
503 int nfs4_handle_exception(struct nfs_server
*server
, int errorcode
, struct nfs4_exception
*exception
)
505 struct nfs_client
*clp
= server
->nfs_client
;
508 ret
= nfs4_do_handle_exception(server
, errorcode
, exception
);
509 if (exception
->delay
) {
510 ret
= nfs4_delay(server
->client
, &exception
->timeout
);
513 if (exception
->recovering
) {
514 ret
= nfs4_wait_clnt_recover(clp
);
515 if (test_bit(NFS_MIG_FAILED
, &server
->mig_status
))
522 exception
->retry
= 1;
527 nfs4_async_handle_exception(struct rpc_task
*task
, struct nfs_server
*server
,
528 int errorcode
, struct nfs4_exception
*exception
)
530 struct nfs_client
*clp
= server
->nfs_client
;
533 ret
= nfs4_do_handle_exception(server
, errorcode
, exception
);
534 if (exception
->delay
) {
535 rpc_delay(task
, nfs4_update_delay(&exception
->timeout
));
538 if (exception
->recovering
) {
539 rpc_sleep_on(&clp
->cl_rpcwaitq
, task
, NULL
);
540 if (test_bit(NFS4CLNT_MANAGER_RUNNING
, &clp
->cl_state
) == 0)
541 rpc_wake_up_queued_task(&clp
->cl_rpcwaitq
, task
);
544 if (test_bit(NFS_MIG_FAILED
, &server
->mig_status
))
549 exception
->retry
= 1;
554 nfs4_async_handle_error(struct rpc_task
*task
, struct nfs_server
*server
,
555 struct nfs4_state
*state
, long *timeout
)
557 struct nfs4_exception exception
= {
561 if (task
->tk_status
>= 0)
564 exception
.timeout
= *timeout
;
565 task
->tk_status
= nfs4_async_handle_exception(task
, server
,
568 if (exception
.delay
&& timeout
)
569 *timeout
= exception
.timeout
;
576 * Return 'true' if 'clp' is using an rpc_client that is integrity protected
577 * or 'false' otherwise.
579 static bool _nfs4_is_integrity_protected(struct nfs_client
*clp
)
581 rpc_authflavor_t flavor
= clp
->cl_rpcclient
->cl_auth
->au_flavor
;
583 if (flavor
== RPC_AUTH_GSS_KRB5I
||
584 flavor
== RPC_AUTH_GSS_KRB5P
)
590 static void do_renew_lease(struct nfs_client
*clp
, unsigned long timestamp
)
592 spin_lock(&clp
->cl_lock
);
593 if (time_before(clp
->cl_last_renewal
,timestamp
))
594 clp
->cl_last_renewal
= timestamp
;
595 spin_unlock(&clp
->cl_lock
);
598 static void renew_lease(const struct nfs_server
*server
, unsigned long timestamp
)
600 struct nfs_client
*clp
= server
->nfs_client
;
602 if (!nfs4_has_session(clp
))
603 do_renew_lease(clp
, timestamp
);
606 struct nfs4_call_sync_data
{
607 const struct nfs_server
*seq_server
;
608 struct nfs4_sequence_args
*seq_args
;
609 struct nfs4_sequence_res
*seq_res
;
612 void nfs4_init_sequence(struct nfs4_sequence_args
*args
,
613 struct nfs4_sequence_res
*res
, int cache_reply
)
615 args
->sa_slot
= NULL
;
616 args
->sa_cache_this
= cache_reply
;
617 args
->sa_privileged
= 0;
622 static void nfs4_set_sequence_privileged(struct nfs4_sequence_args
*args
)
624 args
->sa_privileged
= 1;
627 int nfs40_setup_sequence(struct nfs4_slot_table
*tbl
,
628 struct nfs4_sequence_args
*args
,
629 struct nfs4_sequence_res
*res
,
630 struct rpc_task
*task
)
632 struct nfs4_slot
*slot
;
634 /* slot already allocated? */
635 if (res
->sr_slot
!= NULL
)
638 spin_lock(&tbl
->slot_tbl_lock
);
639 if (nfs4_slot_tbl_draining(tbl
) && !args
->sa_privileged
)
642 slot
= nfs4_alloc_slot(tbl
);
644 if (slot
== ERR_PTR(-ENOMEM
))
645 task
->tk_timeout
= HZ
>> 2;
648 spin_unlock(&tbl
->slot_tbl_lock
);
650 slot
->privileged
= args
->sa_privileged
? 1 : 0;
651 args
->sa_slot
= slot
;
655 rpc_call_start(task
);
659 if (args
->sa_privileged
)
660 rpc_sleep_on_priority(&tbl
->slot_tbl_waitq
, task
,
661 NULL
, RPC_PRIORITY_PRIVILEGED
);
663 rpc_sleep_on(&tbl
->slot_tbl_waitq
, task
, NULL
);
664 spin_unlock(&tbl
->slot_tbl_lock
);
667 EXPORT_SYMBOL_GPL(nfs40_setup_sequence
);
669 static void nfs40_sequence_free_slot(struct nfs4_sequence_res
*res
)
671 struct nfs4_slot
*slot
= res
->sr_slot
;
672 struct nfs4_slot_table
*tbl
;
675 spin_lock(&tbl
->slot_tbl_lock
);
676 if (!nfs41_wake_and_assign_slot(tbl
, slot
))
677 nfs4_free_slot(tbl
, slot
);
678 spin_unlock(&tbl
->slot_tbl_lock
);
683 static int nfs40_sequence_done(struct rpc_task
*task
,
684 struct nfs4_sequence_res
*res
)
686 if (res
->sr_slot
!= NULL
)
687 nfs40_sequence_free_slot(res
);
691 #if defined(CONFIG_NFS_V4_1)
693 static void nfs41_sequence_free_slot(struct nfs4_sequence_res
*res
)
695 struct nfs4_session
*session
;
696 struct nfs4_slot_table
*tbl
;
697 struct nfs4_slot
*slot
= res
->sr_slot
;
698 bool send_new_highest_used_slotid
= false;
701 session
= tbl
->session
;
703 /* Bump the slot sequence number */
708 spin_lock(&tbl
->slot_tbl_lock
);
709 /* Be nice to the server: try to ensure that the last transmitted
710 * value for highest_user_slotid <= target_highest_slotid
712 if (tbl
->highest_used_slotid
> tbl
->target_highest_slotid
)
713 send_new_highest_used_slotid
= true;
715 if (nfs41_wake_and_assign_slot(tbl
, slot
)) {
716 send_new_highest_used_slotid
= false;
719 nfs4_free_slot(tbl
, slot
);
721 if (tbl
->highest_used_slotid
!= NFS4_NO_SLOT
)
722 send_new_highest_used_slotid
= false;
724 spin_unlock(&tbl
->slot_tbl_lock
);
726 if (send_new_highest_used_slotid
)
727 nfs41_notify_server(session
->clp
);
728 if (waitqueue_active(&tbl
->slot_waitq
))
729 wake_up_all(&tbl
->slot_waitq
);
732 static int nfs41_sequence_process(struct rpc_task
*task
,
733 struct nfs4_sequence_res
*res
)
735 struct nfs4_session
*session
;
736 struct nfs4_slot
*slot
= res
->sr_slot
;
737 struct nfs_client
*clp
;
738 bool interrupted
= false;
743 /* don't increment the sequence number if the task wasn't sent */
744 if (!RPC_WAS_SENT(task
))
747 session
= slot
->table
->session
;
749 if (slot
->interrupted
) {
750 slot
->interrupted
= 0;
754 trace_nfs4_sequence_done(session
, res
);
755 /* Check the SEQUENCE operation status */
756 switch (res
->sr_status
) {
758 /* If previous op on slot was interrupted and we reused
759 * the seq# and got a reply from the cache, then retry
761 if (task
->tk_status
== -EREMOTEIO
&& interrupted
) {
765 /* Update the slot's sequence and clientid lease timer */
768 do_renew_lease(clp
, res
->sr_timestamp
);
769 /* Check sequence flags */
770 nfs41_handle_sequence_flag_errors(clp
, res
->sr_status_flags
,
772 nfs41_update_target_slotid(slot
->table
, slot
, res
);
776 * sr_status remains 1 if an RPC level error occurred.
777 * The server may or may not have processed the sequence
779 * Mark the slot as having hosted an interrupted RPC call.
781 slot
->interrupted
= 1;
784 /* The server detected a resend of the RPC call and
785 * returned NFS4ERR_DELAY as per Section 2.10.6.2
788 dprintk("%s: slot=%u seq=%u: Operation in progress\n",
793 case -NFS4ERR_BADSLOT
:
795 * The slot id we used was probably retired. Try again
796 * using a different slot id.
799 case -NFS4ERR_SEQ_MISORDERED
:
801 * Was the last operation on this sequence interrupted?
802 * If so, retry after bumping the sequence number.
809 * Could this slot have been previously retired?
810 * If so, then the server may be expecting seq_nr = 1!
812 if (slot
->seq_nr
!= 1) {
817 case -NFS4ERR_SEQ_FALSE_RETRY
:
821 /* Just update the slot sequence no. */
825 /* The session may be reset by one of the error handlers. */
826 dprintk("%s: Error %d free the slot \n", __func__
, res
->sr_status
);
830 if (rpc_restart_call_prepare(task
)) {
831 nfs41_sequence_free_slot(res
);
837 if (!rpc_restart_call(task
))
839 rpc_delay(task
, NFS4_POLL_RETRY_MAX
);
843 int nfs41_sequence_done(struct rpc_task
*task
, struct nfs4_sequence_res
*res
)
845 if (!nfs41_sequence_process(task
, res
))
847 if (res
->sr_slot
!= NULL
)
848 nfs41_sequence_free_slot(res
);
852 EXPORT_SYMBOL_GPL(nfs41_sequence_done
);
854 static int nfs4_sequence_process(struct rpc_task
*task
, struct nfs4_sequence_res
*res
)
856 if (res
->sr_slot
== NULL
)
858 if (res
->sr_slot
->table
->session
!= NULL
)
859 return nfs41_sequence_process(task
, res
);
860 return nfs40_sequence_done(task
, res
);
863 static void nfs4_sequence_free_slot(struct nfs4_sequence_res
*res
)
865 if (res
->sr_slot
!= NULL
) {
866 if (res
->sr_slot
->table
->session
!= NULL
)
867 nfs41_sequence_free_slot(res
);
869 nfs40_sequence_free_slot(res
);
873 int nfs4_sequence_done(struct rpc_task
*task
, struct nfs4_sequence_res
*res
)
875 if (res
->sr_slot
== NULL
)
877 if (!res
->sr_slot
->table
->session
)
878 return nfs40_sequence_done(task
, res
);
879 return nfs41_sequence_done(task
, res
);
881 EXPORT_SYMBOL_GPL(nfs4_sequence_done
);
883 int nfs41_setup_sequence(struct nfs4_session
*session
,
884 struct nfs4_sequence_args
*args
,
885 struct nfs4_sequence_res
*res
,
886 struct rpc_task
*task
)
888 struct nfs4_slot
*slot
;
889 struct nfs4_slot_table
*tbl
;
891 dprintk("--> %s\n", __func__
);
892 /* slot already allocated? */
893 if (res
->sr_slot
!= NULL
)
896 tbl
= &session
->fc_slot_table
;
898 task
->tk_timeout
= 0;
900 spin_lock(&tbl
->slot_tbl_lock
);
901 if (test_bit(NFS4_SLOT_TBL_DRAINING
, &tbl
->slot_tbl_state
) &&
902 !args
->sa_privileged
) {
903 /* The state manager will wait until the slot table is empty */
904 dprintk("%s session is draining\n", __func__
);
908 slot
= nfs4_alloc_slot(tbl
);
910 /* If out of memory, try again in 1/4 second */
911 if (slot
== ERR_PTR(-ENOMEM
))
912 task
->tk_timeout
= HZ
>> 2;
913 dprintk("<-- %s: no free slots\n", __func__
);
916 spin_unlock(&tbl
->slot_tbl_lock
);
918 slot
->privileged
= args
->sa_privileged
? 1 : 0;
919 args
->sa_slot
= slot
;
921 dprintk("<-- %s slotid=%u seqid=%u\n", __func__
,
922 slot
->slot_nr
, slot
->seq_nr
);
925 res
->sr_timestamp
= jiffies
;
926 res
->sr_status_flags
= 0;
928 * sr_status is only set in decode_sequence, and so will remain
929 * set to 1 if an rpc level failure occurs.
932 trace_nfs4_setup_sequence(session
, args
);
934 rpc_call_start(task
);
937 /* Privileged tasks are queued with top priority */
938 if (args
->sa_privileged
)
939 rpc_sleep_on_priority(&tbl
->slot_tbl_waitq
, task
,
940 NULL
, RPC_PRIORITY_PRIVILEGED
);
942 rpc_sleep_on(&tbl
->slot_tbl_waitq
, task
, NULL
);
943 spin_unlock(&tbl
->slot_tbl_lock
);
946 EXPORT_SYMBOL_GPL(nfs41_setup_sequence
);
948 static int nfs4_setup_sequence(const struct nfs_server
*server
,
949 struct nfs4_sequence_args
*args
,
950 struct nfs4_sequence_res
*res
,
951 struct rpc_task
*task
)
953 struct nfs4_session
*session
= nfs4_get_session(server
);
957 return nfs40_setup_sequence(server
->nfs_client
->cl_slot_tbl
,
960 dprintk("--> %s clp %p session %p sr_slot %u\n",
961 __func__
, session
->clp
, session
, res
->sr_slot
?
962 res
->sr_slot
->slot_nr
: NFS4_NO_SLOT
);
964 ret
= nfs41_setup_sequence(session
, args
, res
, task
);
966 dprintk("<-- %s status=%d\n", __func__
, ret
);
970 static void nfs41_call_sync_prepare(struct rpc_task
*task
, void *calldata
)
972 struct nfs4_call_sync_data
*data
= calldata
;
973 struct nfs4_session
*session
= nfs4_get_session(data
->seq_server
);
975 dprintk("--> %s data->seq_server %p\n", __func__
, data
->seq_server
);
977 nfs41_setup_sequence(session
, data
->seq_args
, data
->seq_res
, task
);
980 static void nfs41_call_sync_done(struct rpc_task
*task
, void *calldata
)
982 struct nfs4_call_sync_data
*data
= calldata
;
984 nfs41_sequence_done(task
, data
->seq_res
);
987 static const struct rpc_call_ops nfs41_call_sync_ops
= {
988 .rpc_call_prepare
= nfs41_call_sync_prepare
,
989 .rpc_call_done
= nfs41_call_sync_done
,
992 #else /* !CONFIG_NFS_V4_1 */
994 static int nfs4_setup_sequence(const struct nfs_server
*server
,
995 struct nfs4_sequence_args
*args
,
996 struct nfs4_sequence_res
*res
,
997 struct rpc_task
*task
)
999 return nfs40_setup_sequence(server
->nfs_client
->cl_slot_tbl
,
1003 static int nfs4_sequence_process(struct rpc_task
*task
, struct nfs4_sequence_res
*res
)
1005 return nfs40_sequence_done(task
, res
);
1008 static void nfs4_sequence_free_slot(struct nfs4_sequence_res
*res
)
1010 if (res
->sr_slot
!= NULL
)
1011 nfs40_sequence_free_slot(res
);
1014 int nfs4_sequence_done(struct rpc_task
*task
,
1015 struct nfs4_sequence_res
*res
)
1017 return nfs40_sequence_done(task
, res
);
1019 EXPORT_SYMBOL_GPL(nfs4_sequence_done
);
1021 #endif /* !CONFIG_NFS_V4_1 */
1023 static void nfs40_call_sync_prepare(struct rpc_task
*task
, void *calldata
)
1025 struct nfs4_call_sync_data
*data
= calldata
;
1026 nfs4_setup_sequence(data
->seq_server
,
1027 data
->seq_args
, data
->seq_res
, task
);
1030 static void nfs40_call_sync_done(struct rpc_task
*task
, void *calldata
)
1032 struct nfs4_call_sync_data
*data
= calldata
;
1033 nfs4_sequence_done(task
, data
->seq_res
);
1036 static const struct rpc_call_ops nfs40_call_sync_ops
= {
1037 .rpc_call_prepare
= nfs40_call_sync_prepare
,
1038 .rpc_call_done
= nfs40_call_sync_done
,
1041 static int nfs4_call_sync_sequence(struct rpc_clnt
*clnt
,
1042 struct nfs_server
*server
,
1043 struct rpc_message
*msg
,
1044 struct nfs4_sequence_args
*args
,
1045 struct nfs4_sequence_res
*res
)
1048 struct rpc_task
*task
;
1049 struct nfs_client
*clp
= server
->nfs_client
;
1050 struct nfs4_call_sync_data data
= {
1051 .seq_server
= server
,
1055 struct rpc_task_setup task_setup
= {
1058 .callback_ops
= clp
->cl_mvops
->call_sync_ops
,
1059 .callback_data
= &data
1062 task
= rpc_run_task(&task_setup
);
1064 ret
= PTR_ERR(task
);
1066 ret
= task
->tk_status
;
1072 int nfs4_call_sync(struct rpc_clnt
*clnt
,
1073 struct nfs_server
*server
,
1074 struct rpc_message
*msg
,
1075 struct nfs4_sequence_args
*args
,
1076 struct nfs4_sequence_res
*res
,
1079 nfs4_init_sequence(args
, res
, cache_reply
);
1080 return nfs4_call_sync_sequence(clnt
, server
, msg
, args
, res
);
1083 static void update_changeattr(struct inode
*dir
, struct nfs4_change_info
*cinfo
)
1085 struct nfs_inode
*nfsi
= NFS_I(dir
);
1087 spin_lock(&dir
->i_lock
);
1088 nfsi
->cache_validity
|= NFS_INO_INVALID_ATTR
|NFS_INO_INVALID_DATA
;
1089 if (!cinfo
->atomic
|| cinfo
->before
!= dir
->i_version
)
1090 nfs_force_lookup_revalidate(dir
);
1091 dir
->i_version
= cinfo
->after
;
1092 nfsi
->attr_gencount
= nfs_inc_attr_generation_counter();
1093 nfs_fscache_invalidate(dir
);
1094 spin_unlock(&dir
->i_lock
);
1097 struct nfs4_opendata
{
1099 struct nfs_openargs o_arg
;
1100 struct nfs_openres o_res
;
1101 struct nfs_open_confirmargs c_arg
;
1102 struct nfs_open_confirmres c_res
;
1103 struct nfs4_string owner_name
;
1104 struct nfs4_string group_name
;
1105 struct nfs4_label
*a_label
;
1106 struct nfs_fattr f_attr
;
1107 struct nfs4_label
*f_label
;
1109 struct dentry
*dentry
;
1110 struct nfs4_state_owner
*owner
;
1111 struct nfs4_state
*state
;
1113 unsigned long timestamp
;
1114 unsigned int rpc_done
: 1;
1115 unsigned int file_created
: 1;
1116 unsigned int is_recover
: 1;
1121 static bool nfs4_clear_cap_atomic_open_v1(struct nfs_server
*server
,
1122 int err
, struct nfs4_exception
*exception
)
1126 if (!(server
->caps
& NFS_CAP_ATOMIC_OPEN_V1
))
1128 server
->caps
&= ~NFS_CAP_ATOMIC_OPEN_V1
;
1129 exception
->retry
= 1;
1134 nfs4_map_atomic_open_share(struct nfs_server
*server
,
1135 fmode_t fmode
, int openflags
)
1139 switch (fmode
& (FMODE_READ
| FMODE_WRITE
)) {
1141 res
= NFS4_SHARE_ACCESS_READ
;
1144 res
= NFS4_SHARE_ACCESS_WRITE
;
1146 case FMODE_READ
|FMODE_WRITE
:
1147 res
= NFS4_SHARE_ACCESS_BOTH
;
1149 if (!(server
->caps
& NFS_CAP_ATOMIC_OPEN_V1
))
1151 /* Want no delegation if we're using O_DIRECT */
1152 if (openflags
& O_DIRECT
)
1153 res
|= NFS4_SHARE_WANT_NO_DELEG
;
1158 static enum open_claim_type4
1159 nfs4_map_atomic_open_claim(struct nfs_server
*server
,
1160 enum open_claim_type4 claim
)
1162 if (server
->caps
& NFS_CAP_ATOMIC_OPEN_V1
)
1167 case NFS4_OPEN_CLAIM_FH
:
1168 return NFS4_OPEN_CLAIM_NULL
;
1169 case NFS4_OPEN_CLAIM_DELEG_CUR_FH
:
1170 return NFS4_OPEN_CLAIM_DELEGATE_CUR
;
1171 case NFS4_OPEN_CLAIM_DELEG_PREV_FH
:
1172 return NFS4_OPEN_CLAIM_DELEGATE_PREV
;
1176 static void nfs4_init_opendata_res(struct nfs4_opendata
*p
)
1178 p
->o_res
.f_attr
= &p
->f_attr
;
1179 p
->o_res
.f_label
= p
->f_label
;
1180 p
->o_res
.seqid
= p
->o_arg
.seqid
;
1181 p
->c_res
.seqid
= p
->c_arg
.seqid
;
1182 p
->o_res
.server
= p
->o_arg
.server
;
1183 p
->o_res
.access_request
= p
->o_arg
.access
;
1184 nfs_fattr_init(&p
->f_attr
);
1185 nfs_fattr_init_names(&p
->f_attr
, &p
->owner_name
, &p
->group_name
);
1188 static struct nfs4_opendata
*nfs4_opendata_alloc(struct dentry
*dentry
,
1189 struct nfs4_state_owner
*sp
, fmode_t fmode
, int flags
,
1190 const struct iattr
*attrs
,
1191 struct nfs4_label
*label
,
1192 enum open_claim_type4 claim
,
1195 struct dentry
*parent
= dget_parent(dentry
);
1196 struct inode
*dir
= d_inode(parent
);
1197 struct nfs_server
*server
= NFS_SERVER(dir
);
1198 struct nfs_seqid
*(*alloc_seqid
)(struct nfs_seqid_counter
*, gfp_t
);
1199 struct nfs4_opendata
*p
;
1201 p
= kzalloc(sizeof(*p
), gfp_mask
);
1205 p
->f_label
= nfs4_label_alloc(server
, gfp_mask
);
1206 if (IS_ERR(p
->f_label
))
1209 p
->a_label
= nfs4_label_alloc(server
, gfp_mask
);
1210 if (IS_ERR(p
->a_label
))
1213 alloc_seqid
= server
->nfs_client
->cl_mvops
->alloc_seqid
;
1214 p
->o_arg
.seqid
= alloc_seqid(&sp
->so_seqid
, gfp_mask
);
1215 if (IS_ERR(p
->o_arg
.seqid
))
1216 goto err_free_label
;
1217 nfs_sb_active(dentry
->d_sb
);
1218 p
->dentry
= dget(dentry
);
1221 atomic_inc(&sp
->so_count
);
1222 p
->o_arg
.open_flags
= flags
;
1223 p
->o_arg
.fmode
= fmode
& (FMODE_READ
|FMODE_WRITE
);
1224 p
->o_arg
.share_access
= nfs4_map_atomic_open_share(server
,
1226 /* don't put an ACCESS op in OPEN compound if O_EXCL, because ACCESS
1227 * will return permission denied for all bits until close */
1228 if (!(flags
& O_EXCL
)) {
1229 /* ask server to check for all possible rights as results
1231 p
->o_arg
.access
= NFS4_ACCESS_READ
| NFS4_ACCESS_MODIFY
|
1232 NFS4_ACCESS_EXTEND
| NFS4_ACCESS_EXECUTE
;
1234 p
->o_arg
.clientid
= server
->nfs_client
->cl_clientid
;
1235 p
->o_arg
.id
.create_time
= ktime_to_ns(sp
->so_seqid
.create_time
);
1236 p
->o_arg
.id
.uniquifier
= sp
->so_seqid
.owner_id
;
1237 p
->o_arg
.name
= &dentry
->d_name
;
1238 p
->o_arg
.server
= server
;
1239 p
->o_arg
.bitmask
= nfs4_bitmask(server
, label
);
1240 p
->o_arg
.open_bitmap
= &nfs4_fattr_bitmap
[0];
1241 p
->o_arg
.label
= nfs4_label_copy(p
->a_label
, label
);
1242 p
->o_arg
.claim
= nfs4_map_atomic_open_claim(server
, claim
);
1243 switch (p
->o_arg
.claim
) {
1244 case NFS4_OPEN_CLAIM_NULL
:
1245 case NFS4_OPEN_CLAIM_DELEGATE_CUR
:
1246 case NFS4_OPEN_CLAIM_DELEGATE_PREV
:
1247 p
->o_arg
.fh
= NFS_FH(dir
);
1249 case NFS4_OPEN_CLAIM_PREVIOUS
:
1250 case NFS4_OPEN_CLAIM_FH
:
1251 case NFS4_OPEN_CLAIM_DELEG_CUR_FH
:
1252 case NFS4_OPEN_CLAIM_DELEG_PREV_FH
:
1253 p
->o_arg
.fh
= NFS_FH(d_inode(dentry
));
1255 if (attrs
!= NULL
&& attrs
->ia_valid
!= 0) {
1258 p
->o_arg
.u
.attrs
= &p
->attrs
;
1259 memcpy(&p
->attrs
, attrs
, sizeof(p
->attrs
));
1262 verf
[1] = current
->pid
;
1263 memcpy(p
->o_arg
.u
.verifier
.data
, verf
,
1264 sizeof(p
->o_arg
.u
.verifier
.data
));
1266 p
->c_arg
.fh
= &p
->o_res
.fh
;
1267 p
->c_arg
.stateid
= &p
->o_res
.stateid
;
1268 p
->c_arg
.seqid
= p
->o_arg
.seqid
;
1269 nfs4_init_opendata_res(p
);
1270 kref_init(&p
->kref
);
1274 nfs4_label_free(p
->a_label
);
1276 nfs4_label_free(p
->f_label
);
1284 static void nfs4_opendata_free(struct kref
*kref
)
1286 struct nfs4_opendata
*p
= container_of(kref
,
1287 struct nfs4_opendata
, kref
);
1288 struct super_block
*sb
= p
->dentry
->d_sb
;
1290 nfs_free_seqid(p
->o_arg
.seqid
);
1291 nfs4_sequence_free_slot(&p
->o_res
.seq_res
);
1292 if (p
->state
!= NULL
)
1293 nfs4_put_open_state(p
->state
);
1294 nfs4_put_state_owner(p
->owner
);
1296 nfs4_label_free(p
->a_label
);
1297 nfs4_label_free(p
->f_label
);
1301 nfs_sb_deactive(sb
);
1302 nfs_fattr_free_names(&p
->f_attr
);
1303 kfree(p
->f_attr
.mdsthreshold
);
1307 static void nfs4_opendata_put(struct nfs4_opendata
*p
)
1310 kref_put(&p
->kref
, nfs4_opendata_free
);
1313 static int nfs4_wait_for_completion_rpc_task(struct rpc_task
*task
)
1317 ret
= rpc_wait_for_completion_task(task
);
1321 static bool nfs4_mode_match_open_stateid(struct nfs4_state
*state
,
1324 switch(fmode
& (FMODE_READ
|FMODE_WRITE
)) {
1325 case FMODE_READ
|FMODE_WRITE
:
1326 return state
->n_rdwr
!= 0;
1328 return state
->n_wronly
!= 0;
1330 return state
->n_rdonly
!= 0;
1336 static int can_open_cached(struct nfs4_state
*state
, fmode_t mode
, int open_mode
)
1340 if (open_mode
& (O_EXCL
|O_TRUNC
))
1342 switch (mode
& (FMODE_READ
|FMODE_WRITE
)) {
1344 ret
|= test_bit(NFS_O_RDONLY_STATE
, &state
->flags
) != 0
1345 && state
->n_rdonly
!= 0;
1348 ret
|= test_bit(NFS_O_WRONLY_STATE
, &state
->flags
) != 0
1349 && state
->n_wronly
!= 0;
1351 case FMODE_READ
|FMODE_WRITE
:
1352 ret
|= test_bit(NFS_O_RDWR_STATE
, &state
->flags
) != 0
1353 && state
->n_rdwr
!= 0;
1359 static int can_open_delegated(struct nfs_delegation
*delegation
, fmode_t fmode
,
1360 enum open_claim_type4 claim
)
1362 if (delegation
== NULL
)
1364 if ((delegation
->type
& fmode
) != fmode
)
1366 if (test_bit(NFS_DELEGATION_RETURNING
, &delegation
->flags
))
1369 case NFS4_OPEN_CLAIM_NULL
:
1370 case NFS4_OPEN_CLAIM_FH
:
1372 case NFS4_OPEN_CLAIM_PREVIOUS
:
1373 if (!test_bit(NFS_DELEGATION_NEED_RECLAIM
, &delegation
->flags
))
1378 nfs_mark_delegation_referenced(delegation
);
1382 static void update_open_stateflags(struct nfs4_state
*state
, fmode_t fmode
)
1391 case FMODE_READ
|FMODE_WRITE
:
1394 nfs4_state_set_mode_locked(state
, state
->state
| fmode
);
1397 #ifdef CONFIG_NFS_V4_1
1398 static bool nfs_open_stateid_recover_openmode(struct nfs4_state
*state
)
1400 if (state
->n_rdonly
&& !test_bit(NFS_O_RDONLY_STATE
, &state
->flags
))
1402 if (state
->n_wronly
&& !test_bit(NFS_O_WRONLY_STATE
, &state
->flags
))
1404 if (state
->n_rdwr
&& !test_bit(NFS_O_RDWR_STATE
, &state
->flags
))
1408 #endif /* CONFIG_NFS_V4_1 */
1410 static void nfs_test_and_clear_all_open_stateid(struct nfs4_state
*state
)
1412 struct nfs_client
*clp
= state
->owner
->so_server
->nfs_client
;
1413 bool need_recover
= false;
1415 if (test_and_clear_bit(NFS_O_RDONLY_STATE
, &state
->flags
) && state
->n_rdonly
)
1416 need_recover
= true;
1417 if (test_and_clear_bit(NFS_O_WRONLY_STATE
, &state
->flags
) && state
->n_wronly
)
1418 need_recover
= true;
1419 if (test_and_clear_bit(NFS_O_RDWR_STATE
, &state
->flags
) && state
->n_rdwr
)
1420 need_recover
= true;
1422 nfs4_state_mark_reclaim_nograce(clp
, state
);
1425 static bool nfs_need_update_open_stateid(struct nfs4_state
*state
,
1426 const nfs4_stateid
*stateid
, nfs4_stateid
*freeme
)
1428 if (test_and_set_bit(NFS_OPEN_STATE
, &state
->flags
) == 0)
1430 if (!nfs4_stateid_match_other(stateid
, &state
->open_stateid
)) {
1431 nfs4_stateid_copy(freeme
, &state
->open_stateid
);
1432 nfs_test_and_clear_all_open_stateid(state
);
1435 if (nfs4_stateid_is_newer(stateid
, &state
->open_stateid
))
1440 static void nfs_resync_open_stateid_locked(struct nfs4_state
*state
)
1442 if (!(state
->n_wronly
|| state
->n_rdonly
|| state
->n_rdwr
))
1444 if (state
->n_wronly
)
1445 set_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
1446 if (state
->n_rdonly
)
1447 set_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
1449 set_bit(NFS_O_RDWR_STATE
, &state
->flags
);
1450 set_bit(NFS_OPEN_STATE
, &state
->flags
);
1453 static void nfs_clear_open_stateid_locked(struct nfs4_state
*state
,
1454 nfs4_stateid
*stateid
, fmode_t fmode
)
1456 clear_bit(NFS_O_RDWR_STATE
, &state
->flags
);
1457 switch (fmode
& (FMODE_READ
|FMODE_WRITE
)) {
1459 clear_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
1462 clear_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
1465 clear_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
1466 clear_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
1467 clear_bit(NFS_OPEN_STATE
, &state
->flags
);
1469 if (stateid
== NULL
)
1471 /* Handle OPEN+OPEN_DOWNGRADE races */
1472 if (nfs4_stateid_match_other(stateid
, &state
->open_stateid
) &&
1473 !nfs4_stateid_is_newer(stateid
, &state
->open_stateid
)) {
1474 nfs_resync_open_stateid_locked(state
);
1477 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) == 0)
1478 nfs4_stateid_copy(&state
->stateid
, stateid
);
1479 nfs4_stateid_copy(&state
->open_stateid
, stateid
);
1482 static void nfs_clear_open_stateid(struct nfs4_state
*state
,
1483 nfs4_stateid
*arg_stateid
,
1484 nfs4_stateid
*stateid
, fmode_t fmode
)
1486 write_seqlock(&state
->seqlock
);
1487 /* Ignore, if the CLOSE argment doesn't match the current stateid */
1488 if (nfs4_state_match_open_stateid_other(state
, arg_stateid
))
1489 nfs_clear_open_stateid_locked(state
, stateid
, fmode
);
1490 write_sequnlock(&state
->seqlock
);
1491 if (test_bit(NFS_STATE_RECLAIM_NOGRACE
, &state
->flags
))
1492 nfs4_schedule_state_manager(state
->owner
->so_server
->nfs_client
);
1495 static void nfs_set_open_stateid_locked(struct nfs4_state
*state
,
1496 const nfs4_stateid
*stateid
, fmode_t fmode
,
1497 nfs4_stateid
*freeme
)
1501 set_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
1504 set_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
1506 case FMODE_READ
|FMODE_WRITE
:
1507 set_bit(NFS_O_RDWR_STATE
, &state
->flags
);
1509 if (!nfs_need_update_open_stateid(state
, stateid
, freeme
))
1511 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) == 0)
1512 nfs4_stateid_copy(&state
->stateid
, stateid
);
1513 nfs4_stateid_copy(&state
->open_stateid
, stateid
);
1516 static void __update_open_stateid(struct nfs4_state
*state
,
1517 const nfs4_stateid
*open_stateid
,
1518 const nfs4_stateid
*deleg_stateid
,
1520 nfs4_stateid
*freeme
)
1523 * Protect the call to nfs4_state_set_mode_locked and
1524 * serialise the stateid update
1526 spin_lock(&state
->owner
->so_lock
);
1527 write_seqlock(&state
->seqlock
);
1528 if (deleg_stateid
!= NULL
) {
1529 nfs4_stateid_copy(&state
->stateid
, deleg_stateid
);
1530 set_bit(NFS_DELEGATED_STATE
, &state
->flags
);
1532 if (open_stateid
!= NULL
)
1533 nfs_set_open_stateid_locked(state
, open_stateid
, fmode
, freeme
);
1534 write_sequnlock(&state
->seqlock
);
1535 update_open_stateflags(state
, fmode
);
1536 spin_unlock(&state
->owner
->so_lock
);
1539 static int update_open_stateid(struct nfs4_state
*state
,
1540 const nfs4_stateid
*open_stateid
,
1541 const nfs4_stateid
*delegation
,
1544 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
1545 struct nfs_client
*clp
= server
->nfs_client
;
1546 struct nfs_inode
*nfsi
= NFS_I(state
->inode
);
1547 struct nfs_delegation
*deleg_cur
;
1548 nfs4_stateid freeme
= { };
1551 fmode
&= (FMODE_READ
|FMODE_WRITE
);
1554 deleg_cur
= rcu_dereference(nfsi
->delegation
);
1555 if (deleg_cur
== NULL
)
1558 spin_lock(&deleg_cur
->lock
);
1559 if (rcu_dereference(nfsi
->delegation
) != deleg_cur
||
1560 test_bit(NFS_DELEGATION_RETURNING
, &deleg_cur
->flags
) ||
1561 (deleg_cur
->type
& fmode
) != fmode
)
1562 goto no_delegation_unlock
;
1564 if (delegation
== NULL
)
1565 delegation
= &deleg_cur
->stateid
;
1566 else if (!nfs4_stateid_match(&deleg_cur
->stateid
, delegation
))
1567 goto no_delegation_unlock
;
1569 nfs_mark_delegation_referenced(deleg_cur
);
1570 __update_open_stateid(state
, open_stateid
, &deleg_cur
->stateid
,
1573 no_delegation_unlock
:
1574 spin_unlock(&deleg_cur
->lock
);
1578 if (!ret
&& open_stateid
!= NULL
) {
1579 __update_open_stateid(state
, open_stateid
, NULL
, fmode
, &freeme
);
1582 if (test_bit(NFS_STATE_RECLAIM_NOGRACE
, &state
->flags
))
1583 nfs4_schedule_state_manager(clp
);
1584 if (freeme
.type
!= 0)
1585 nfs4_test_and_free_stateid(server
, &freeme
,
1586 state
->owner
->so_cred
);
1591 static bool nfs4_update_lock_stateid(struct nfs4_lock_state
*lsp
,
1592 const nfs4_stateid
*stateid
)
1594 struct nfs4_state
*state
= lsp
->ls_state
;
1597 spin_lock(&state
->state_lock
);
1598 if (!nfs4_stateid_match_other(stateid
, &lsp
->ls_stateid
))
1600 if (!nfs4_stateid_is_newer(stateid
, &lsp
->ls_stateid
))
1602 nfs4_stateid_copy(&lsp
->ls_stateid
, stateid
);
1605 spin_unlock(&state
->state_lock
);
1609 static void nfs4_return_incompatible_delegation(struct inode
*inode
, fmode_t fmode
)
1611 struct nfs_delegation
*delegation
;
1614 delegation
= rcu_dereference(NFS_I(inode
)->delegation
);
1615 if (delegation
== NULL
|| (delegation
->type
& fmode
) == fmode
) {
1620 nfs4_inode_return_delegation(inode
);
1623 static struct nfs4_state
*nfs4_try_open_cached(struct nfs4_opendata
*opendata
)
1625 struct nfs4_state
*state
= opendata
->state
;
1626 struct nfs_inode
*nfsi
= NFS_I(state
->inode
);
1627 struct nfs_delegation
*delegation
;
1628 int open_mode
= opendata
->o_arg
.open_flags
;
1629 fmode_t fmode
= opendata
->o_arg
.fmode
;
1630 enum open_claim_type4 claim
= opendata
->o_arg
.claim
;
1631 nfs4_stateid stateid
;
1635 spin_lock(&state
->owner
->so_lock
);
1636 if (can_open_cached(state
, fmode
, open_mode
)) {
1637 update_open_stateflags(state
, fmode
);
1638 spin_unlock(&state
->owner
->so_lock
);
1639 goto out_return_state
;
1641 spin_unlock(&state
->owner
->so_lock
);
1643 delegation
= rcu_dereference(nfsi
->delegation
);
1644 if (!can_open_delegated(delegation
, fmode
, claim
)) {
1648 /* Save the delegation */
1649 nfs4_stateid_copy(&stateid
, &delegation
->stateid
);
1651 nfs_release_seqid(opendata
->o_arg
.seqid
);
1652 if (!opendata
->is_recover
) {
1653 ret
= nfs_may_open(state
->inode
, state
->owner
->so_cred
, open_mode
);
1659 /* Try to update the stateid using the delegation */
1660 if (update_open_stateid(state
, NULL
, &stateid
, fmode
))
1661 goto out_return_state
;
1664 return ERR_PTR(ret
);
1666 atomic_inc(&state
->count
);
1671 nfs4_opendata_check_deleg(struct nfs4_opendata
*data
, struct nfs4_state
*state
)
1673 struct nfs_client
*clp
= NFS_SERVER(state
->inode
)->nfs_client
;
1674 struct nfs_delegation
*delegation
;
1675 int delegation_flags
= 0;
1678 delegation
= rcu_dereference(NFS_I(state
->inode
)->delegation
);
1680 delegation_flags
= delegation
->flags
;
1682 switch (data
->o_arg
.claim
) {
1685 case NFS4_OPEN_CLAIM_DELEGATE_CUR
:
1686 case NFS4_OPEN_CLAIM_DELEG_CUR_FH
:
1687 pr_err_ratelimited("NFS: Broken NFSv4 server %s is "
1688 "returning a delegation for "
1689 "OPEN(CLAIM_DELEGATE_CUR)\n",
1693 if ((delegation_flags
& 1UL<<NFS_DELEGATION_NEED_RECLAIM
) == 0)
1694 nfs_inode_set_delegation(state
->inode
,
1695 data
->owner
->so_cred
,
1698 nfs_inode_reclaim_delegation(state
->inode
,
1699 data
->owner
->so_cred
,
1704 * Check the inode attributes against the CLAIM_PREVIOUS returned attributes
1705 * and update the nfs4_state.
1707 static struct nfs4_state
*
1708 _nfs4_opendata_reclaim_to_nfs4_state(struct nfs4_opendata
*data
)
1710 struct inode
*inode
= data
->state
->inode
;
1711 struct nfs4_state
*state
= data
->state
;
1714 if (!data
->rpc_done
) {
1715 if (data
->rpc_status
) {
1716 ret
= data
->rpc_status
;
1719 /* cached opens have already been processed */
1723 ret
= nfs_refresh_inode(inode
, &data
->f_attr
);
1727 if (data
->o_res
.delegation_type
!= 0)
1728 nfs4_opendata_check_deleg(data
, state
);
1730 update_open_stateid(state
, &data
->o_res
.stateid
, NULL
,
1732 atomic_inc(&state
->count
);
1736 return ERR_PTR(ret
);
1740 static struct nfs4_state
*
1741 _nfs4_opendata_to_nfs4_state(struct nfs4_opendata
*data
)
1743 struct inode
*inode
;
1744 struct nfs4_state
*state
= NULL
;
1747 if (!data
->rpc_done
) {
1748 state
= nfs4_try_open_cached(data
);
1749 trace_nfs4_cached_open(data
->state
);
1754 if (!(data
->f_attr
.valid
& NFS_ATTR_FATTR
))
1756 inode
= nfs_fhget(data
->dir
->d_sb
, &data
->o_res
.fh
, &data
->f_attr
, data
->f_label
);
1757 ret
= PTR_ERR(inode
);
1761 state
= nfs4_get_open_state(inode
, data
->owner
);
1764 if (data
->o_res
.delegation_type
!= 0)
1765 nfs4_opendata_check_deleg(data
, state
);
1766 update_open_stateid(state
, &data
->o_res
.stateid
, NULL
,
1770 nfs_release_seqid(data
->o_arg
.seqid
);
1775 return ERR_PTR(ret
);
1778 static struct nfs4_state
*
1779 nfs4_opendata_to_nfs4_state(struct nfs4_opendata
*data
)
1781 struct nfs4_state
*ret
;
1783 if (data
->o_arg
.claim
== NFS4_OPEN_CLAIM_PREVIOUS
)
1784 ret
=_nfs4_opendata_reclaim_to_nfs4_state(data
);
1786 ret
= _nfs4_opendata_to_nfs4_state(data
);
1787 nfs4_sequence_free_slot(&data
->o_res
.seq_res
);
1791 static struct nfs_open_context
*nfs4_state_find_open_context(struct nfs4_state
*state
)
1793 struct nfs_inode
*nfsi
= NFS_I(state
->inode
);
1794 struct nfs_open_context
*ctx
;
1796 spin_lock(&state
->inode
->i_lock
);
1797 list_for_each_entry(ctx
, &nfsi
->open_files
, list
) {
1798 if (ctx
->state
!= state
)
1800 get_nfs_open_context(ctx
);
1801 spin_unlock(&state
->inode
->i_lock
);
1804 spin_unlock(&state
->inode
->i_lock
);
1805 return ERR_PTR(-ENOENT
);
1808 static struct nfs4_opendata
*nfs4_open_recoverdata_alloc(struct nfs_open_context
*ctx
,
1809 struct nfs4_state
*state
, enum open_claim_type4 claim
)
1811 struct nfs4_opendata
*opendata
;
1813 opendata
= nfs4_opendata_alloc(ctx
->dentry
, state
->owner
, 0, 0,
1814 NULL
, NULL
, claim
, GFP_NOFS
);
1815 if (opendata
== NULL
)
1816 return ERR_PTR(-ENOMEM
);
1817 opendata
->state
= state
;
1818 atomic_inc(&state
->count
);
1822 static int nfs4_open_recover_helper(struct nfs4_opendata
*opendata
,
1825 struct nfs4_state
*newstate
;
1828 if (!nfs4_mode_match_open_stateid(opendata
->state
, fmode
))
1830 opendata
->o_arg
.open_flags
= 0;
1831 opendata
->o_arg
.fmode
= fmode
;
1832 opendata
->o_arg
.share_access
= nfs4_map_atomic_open_share(
1833 NFS_SB(opendata
->dentry
->d_sb
),
1835 memset(&opendata
->o_res
, 0, sizeof(opendata
->o_res
));
1836 memset(&opendata
->c_res
, 0, sizeof(opendata
->c_res
));
1837 nfs4_init_opendata_res(opendata
);
1838 ret
= _nfs4_recover_proc_open(opendata
);
1841 newstate
= nfs4_opendata_to_nfs4_state(opendata
);
1842 if (IS_ERR(newstate
))
1843 return PTR_ERR(newstate
);
1844 if (newstate
!= opendata
->state
)
1846 nfs4_close_state(newstate
, fmode
);
1850 static int nfs4_open_recover(struct nfs4_opendata
*opendata
, struct nfs4_state
*state
)
1854 /* Don't trigger recovery in nfs_test_and_clear_all_open_stateid */
1855 clear_bit(NFS_O_RDWR_STATE
, &state
->flags
);
1856 clear_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
1857 clear_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
1858 /* memory barrier prior to reading state->n_* */
1859 clear_bit(NFS_DELEGATED_STATE
, &state
->flags
);
1860 clear_bit(NFS_OPEN_STATE
, &state
->flags
);
1862 ret
= nfs4_open_recover_helper(opendata
, FMODE_READ
|FMODE_WRITE
);
1865 ret
= nfs4_open_recover_helper(opendata
, FMODE_WRITE
);
1868 ret
= nfs4_open_recover_helper(opendata
, FMODE_READ
);
1872 * We may have performed cached opens for all three recoveries.
1873 * Check if we need to update the current stateid.
1875 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) == 0 &&
1876 !nfs4_stateid_match(&state
->stateid
, &state
->open_stateid
)) {
1877 write_seqlock(&state
->seqlock
);
1878 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) == 0)
1879 nfs4_stateid_copy(&state
->stateid
, &state
->open_stateid
);
1880 write_sequnlock(&state
->seqlock
);
1887 * reclaim state on the server after a reboot.
1889 static int _nfs4_do_open_reclaim(struct nfs_open_context
*ctx
, struct nfs4_state
*state
)
1891 struct nfs_delegation
*delegation
;
1892 struct nfs4_opendata
*opendata
;
1893 fmode_t delegation_type
= 0;
1896 opendata
= nfs4_open_recoverdata_alloc(ctx
, state
,
1897 NFS4_OPEN_CLAIM_PREVIOUS
);
1898 if (IS_ERR(opendata
))
1899 return PTR_ERR(opendata
);
1901 delegation
= rcu_dereference(NFS_I(state
->inode
)->delegation
);
1902 if (delegation
!= NULL
&& test_bit(NFS_DELEGATION_NEED_RECLAIM
, &delegation
->flags
) != 0)
1903 delegation_type
= delegation
->type
;
1905 opendata
->o_arg
.u
.delegation_type
= delegation_type
;
1906 status
= nfs4_open_recover(opendata
, state
);
1907 nfs4_opendata_put(opendata
);
1911 static int nfs4_do_open_reclaim(struct nfs_open_context
*ctx
, struct nfs4_state
*state
)
1913 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
1914 struct nfs4_exception exception
= { };
1917 err
= _nfs4_do_open_reclaim(ctx
, state
);
1918 trace_nfs4_open_reclaim(ctx
, 0, err
);
1919 if (nfs4_clear_cap_atomic_open_v1(server
, err
, &exception
))
1921 if (err
!= -NFS4ERR_DELAY
)
1923 nfs4_handle_exception(server
, err
, &exception
);
1924 } while (exception
.retry
);
1928 static int nfs4_open_reclaim(struct nfs4_state_owner
*sp
, struct nfs4_state
*state
)
1930 struct nfs_open_context
*ctx
;
1933 ctx
= nfs4_state_find_open_context(state
);
1936 ret
= nfs4_do_open_reclaim(ctx
, state
);
1937 put_nfs_open_context(ctx
);
1941 static int nfs4_handle_delegation_recall_error(struct nfs_server
*server
, struct nfs4_state
*state
, const nfs4_stateid
*stateid
, int err
)
1945 printk(KERN_ERR
"NFS: %s: unhandled error "
1946 "%d.\n", __func__
, err
);
1952 case -NFS4ERR_BADSESSION
:
1953 case -NFS4ERR_BADSLOT
:
1954 case -NFS4ERR_BAD_HIGH_SLOT
:
1955 case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION
:
1956 case -NFS4ERR_DEADSESSION
:
1957 set_bit(NFS_DELEGATED_STATE
, &state
->flags
);
1958 nfs4_schedule_session_recovery(server
->nfs_client
->cl_session
, err
);
1960 case -NFS4ERR_STALE_CLIENTID
:
1961 case -NFS4ERR_STALE_STATEID
:
1962 set_bit(NFS_DELEGATED_STATE
, &state
->flags
);
1963 /* Don't recall a delegation if it was lost */
1964 nfs4_schedule_lease_recovery(server
->nfs_client
);
1966 case -NFS4ERR_MOVED
:
1967 nfs4_schedule_migration_recovery(server
);
1969 case -NFS4ERR_LEASE_MOVED
:
1970 nfs4_schedule_lease_moved_recovery(server
->nfs_client
);
1972 case -NFS4ERR_DELEG_REVOKED
:
1973 case -NFS4ERR_ADMIN_REVOKED
:
1974 case -NFS4ERR_EXPIRED
:
1975 case -NFS4ERR_BAD_STATEID
:
1976 case -NFS4ERR_OPENMODE
:
1977 nfs_inode_find_state_and_recover(state
->inode
,
1979 nfs4_schedule_stateid_recovery(server
, state
);
1981 case -NFS4ERR_DELAY
:
1982 case -NFS4ERR_GRACE
:
1983 set_bit(NFS_DELEGATED_STATE
, &state
->flags
);
1987 case -NFS4ERR_DENIED
:
1988 /* kill_proc(fl->fl_pid, SIGLOST, 1); */
1994 int nfs4_open_delegation_recall(struct nfs_open_context
*ctx
,
1995 struct nfs4_state
*state
, const nfs4_stateid
*stateid
,
1998 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
1999 struct nfs4_opendata
*opendata
;
2002 opendata
= nfs4_open_recoverdata_alloc(ctx
, state
,
2003 NFS4_OPEN_CLAIM_DELEG_CUR_FH
);
2004 if (IS_ERR(opendata
))
2005 return PTR_ERR(opendata
);
2006 nfs4_stateid_copy(&opendata
->o_arg
.u
.delegation
, stateid
);
2007 write_seqlock(&state
->seqlock
);
2008 nfs4_stateid_copy(&state
->stateid
, &state
->open_stateid
);
2009 write_sequnlock(&state
->seqlock
);
2010 clear_bit(NFS_DELEGATED_STATE
, &state
->flags
);
2011 switch (type
& (FMODE_READ
|FMODE_WRITE
)) {
2012 case FMODE_READ
|FMODE_WRITE
:
2014 err
= nfs4_open_recover_helper(opendata
, FMODE_READ
|FMODE_WRITE
);
2017 err
= nfs4_open_recover_helper(opendata
, FMODE_WRITE
);
2021 err
= nfs4_open_recover_helper(opendata
, FMODE_READ
);
2023 nfs4_opendata_put(opendata
);
2024 return nfs4_handle_delegation_recall_error(server
, state
, stateid
, err
);
2027 static void nfs4_open_confirm_prepare(struct rpc_task
*task
, void *calldata
)
2029 struct nfs4_opendata
*data
= calldata
;
2031 nfs40_setup_sequence(data
->o_arg
.server
->nfs_client
->cl_slot_tbl
,
2032 &data
->c_arg
.seq_args
, &data
->c_res
.seq_res
, task
);
2035 static void nfs4_open_confirm_done(struct rpc_task
*task
, void *calldata
)
2037 struct nfs4_opendata
*data
= calldata
;
2039 nfs40_sequence_done(task
, &data
->c_res
.seq_res
);
2041 data
->rpc_status
= task
->tk_status
;
2042 if (data
->rpc_status
== 0) {
2043 nfs4_stateid_copy(&data
->o_res
.stateid
, &data
->c_res
.stateid
);
2044 nfs_confirm_seqid(&data
->owner
->so_seqid
, 0);
2045 renew_lease(data
->o_res
.server
, data
->timestamp
);
2050 static void nfs4_open_confirm_release(void *calldata
)
2052 struct nfs4_opendata
*data
= calldata
;
2053 struct nfs4_state
*state
= NULL
;
2055 /* If this request hasn't been cancelled, do nothing */
2056 if (data
->cancelled
== 0)
2058 /* In case of error, no cleanup! */
2059 if (!data
->rpc_done
)
2061 state
= nfs4_opendata_to_nfs4_state(data
);
2063 nfs4_close_state(state
, data
->o_arg
.fmode
);
2065 nfs4_opendata_put(data
);
2068 static const struct rpc_call_ops nfs4_open_confirm_ops
= {
2069 .rpc_call_prepare
= nfs4_open_confirm_prepare
,
2070 .rpc_call_done
= nfs4_open_confirm_done
,
2071 .rpc_release
= nfs4_open_confirm_release
,
2075 * Note: On error, nfs4_proc_open_confirm will free the struct nfs4_opendata
2077 static int _nfs4_proc_open_confirm(struct nfs4_opendata
*data
)
2079 struct nfs_server
*server
= NFS_SERVER(d_inode(data
->dir
));
2080 struct rpc_task
*task
;
2081 struct rpc_message msg
= {
2082 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_OPEN_CONFIRM
],
2083 .rpc_argp
= &data
->c_arg
,
2084 .rpc_resp
= &data
->c_res
,
2085 .rpc_cred
= data
->owner
->so_cred
,
2087 struct rpc_task_setup task_setup_data
= {
2088 .rpc_client
= server
->client
,
2089 .rpc_message
= &msg
,
2090 .callback_ops
= &nfs4_open_confirm_ops
,
2091 .callback_data
= data
,
2092 .workqueue
= nfsiod_workqueue
,
2093 .flags
= RPC_TASK_ASYNC
,
2097 nfs4_init_sequence(&data
->c_arg
.seq_args
, &data
->c_res
.seq_res
, 1);
2098 kref_get(&data
->kref
);
2100 data
->rpc_status
= 0;
2101 data
->timestamp
= jiffies
;
2102 if (data
->is_recover
)
2103 nfs4_set_sequence_privileged(&data
->c_arg
.seq_args
);
2104 task
= rpc_run_task(&task_setup_data
);
2106 return PTR_ERR(task
);
2107 status
= nfs4_wait_for_completion_rpc_task(task
);
2109 data
->cancelled
= 1;
2112 status
= data
->rpc_status
;
2117 static void nfs4_open_prepare(struct rpc_task
*task
, void *calldata
)
2119 struct nfs4_opendata
*data
= calldata
;
2120 struct nfs4_state_owner
*sp
= data
->owner
;
2121 struct nfs_client
*clp
= sp
->so_server
->nfs_client
;
2122 enum open_claim_type4 claim
= data
->o_arg
.claim
;
2124 if (nfs_wait_on_sequence(data
->o_arg
.seqid
, task
) != 0)
2127 * Check if we still need to send an OPEN call, or if we can use
2128 * a delegation instead.
2130 if (data
->state
!= NULL
) {
2131 struct nfs_delegation
*delegation
;
2133 if (can_open_cached(data
->state
, data
->o_arg
.fmode
, data
->o_arg
.open_flags
))
2136 delegation
= rcu_dereference(NFS_I(data
->state
->inode
)->delegation
);
2137 if (can_open_delegated(delegation
, data
->o_arg
.fmode
, claim
))
2138 goto unlock_no_action
;
2141 /* Update client id. */
2142 data
->o_arg
.clientid
= clp
->cl_clientid
;
2146 case NFS4_OPEN_CLAIM_PREVIOUS
:
2147 case NFS4_OPEN_CLAIM_DELEG_CUR_FH
:
2148 case NFS4_OPEN_CLAIM_DELEG_PREV_FH
:
2149 data
->o_arg
.open_bitmap
= &nfs4_open_noattr_bitmap
[0];
2150 case NFS4_OPEN_CLAIM_FH
:
2151 task
->tk_msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_OPEN_NOATTR
];
2152 nfs_copy_fh(&data
->o_res
.fh
, data
->o_arg
.fh
);
2154 data
->timestamp
= jiffies
;
2155 if (nfs4_setup_sequence(data
->o_arg
.server
,
2156 &data
->o_arg
.seq_args
,
2157 &data
->o_res
.seq_res
,
2159 nfs_release_seqid(data
->o_arg
.seqid
);
2161 /* Set the create mode (note dependency on the session type) */
2162 data
->o_arg
.createmode
= NFS4_CREATE_UNCHECKED
;
2163 if (data
->o_arg
.open_flags
& O_EXCL
) {
2164 data
->o_arg
.createmode
= NFS4_CREATE_EXCLUSIVE
;
2165 if (nfs4_has_persistent_session(clp
))
2166 data
->o_arg
.createmode
= NFS4_CREATE_GUARDED
;
2167 else if (clp
->cl_mvops
->minor_version
> 0)
2168 data
->o_arg
.createmode
= NFS4_CREATE_EXCLUSIVE4_1
;
2172 trace_nfs4_cached_open(data
->state
);
2175 task
->tk_action
= NULL
;
2177 nfs4_sequence_done(task
, &data
->o_res
.seq_res
);
2180 static void nfs4_open_done(struct rpc_task
*task
, void *calldata
)
2182 struct nfs4_opendata
*data
= calldata
;
2184 data
->rpc_status
= task
->tk_status
;
2186 if (!nfs4_sequence_process(task
, &data
->o_res
.seq_res
))
2189 if (task
->tk_status
== 0) {
2190 if (data
->o_res
.f_attr
->valid
& NFS_ATTR_FATTR_TYPE
) {
2191 switch (data
->o_res
.f_attr
->mode
& S_IFMT
) {
2195 data
->rpc_status
= -ELOOP
;
2198 data
->rpc_status
= -EISDIR
;
2201 data
->rpc_status
= -ENOTDIR
;
2204 renew_lease(data
->o_res
.server
, data
->timestamp
);
2205 if (!(data
->o_res
.rflags
& NFS4_OPEN_RESULT_CONFIRM
))
2206 nfs_confirm_seqid(&data
->owner
->so_seqid
, 0);
2211 static void nfs4_open_release(void *calldata
)
2213 struct nfs4_opendata
*data
= calldata
;
2214 struct nfs4_state
*state
= NULL
;
2216 /* If this request hasn't been cancelled, do nothing */
2217 if (data
->cancelled
== 0)
2219 /* In case of error, no cleanup! */
2220 if (data
->rpc_status
!= 0 || !data
->rpc_done
)
2222 /* In case we need an open_confirm, no cleanup! */
2223 if (data
->o_res
.rflags
& NFS4_OPEN_RESULT_CONFIRM
)
2225 state
= nfs4_opendata_to_nfs4_state(data
);
2227 nfs4_close_state(state
, data
->o_arg
.fmode
);
2229 nfs4_opendata_put(data
);
2232 static const struct rpc_call_ops nfs4_open_ops
= {
2233 .rpc_call_prepare
= nfs4_open_prepare
,
2234 .rpc_call_done
= nfs4_open_done
,
2235 .rpc_release
= nfs4_open_release
,
2238 static int nfs4_run_open_task(struct nfs4_opendata
*data
, int isrecover
)
2240 struct inode
*dir
= d_inode(data
->dir
);
2241 struct nfs_server
*server
= NFS_SERVER(dir
);
2242 struct nfs_openargs
*o_arg
= &data
->o_arg
;
2243 struct nfs_openres
*o_res
= &data
->o_res
;
2244 struct rpc_task
*task
;
2245 struct rpc_message msg
= {
2246 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_OPEN
],
2249 .rpc_cred
= data
->owner
->so_cred
,
2251 struct rpc_task_setup task_setup_data
= {
2252 .rpc_client
= server
->client
,
2253 .rpc_message
= &msg
,
2254 .callback_ops
= &nfs4_open_ops
,
2255 .callback_data
= data
,
2256 .workqueue
= nfsiod_workqueue
,
2257 .flags
= RPC_TASK_ASYNC
,
2261 nfs4_init_sequence(&o_arg
->seq_args
, &o_res
->seq_res
, 1);
2262 kref_get(&data
->kref
);
2264 data
->rpc_status
= 0;
2265 data
->cancelled
= 0;
2266 data
->is_recover
= 0;
2268 nfs4_set_sequence_privileged(&o_arg
->seq_args
);
2269 data
->is_recover
= 1;
2271 task
= rpc_run_task(&task_setup_data
);
2273 return PTR_ERR(task
);
2274 status
= nfs4_wait_for_completion_rpc_task(task
);
2276 data
->cancelled
= 1;
2279 status
= data
->rpc_status
;
2285 static int _nfs4_recover_proc_open(struct nfs4_opendata
*data
)
2287 struct inode
*dir
= d_inode(data
->dir
);
2288 struct nfs_openres
*o_res
= &data
->o_res
;
2291 status
= nfs4_run_open_task(data
, 1);
2292 if (status
!= 0 || !data
->rpc_done
)
2295 nfs_fattr_map_and_free_names(NFS_SERVER(dir
), &data
->f_attr
);
2297 if (o_res
->rflags
& NFS4_OPEN_RESULT_CONFIRM
) {
2298 status
= _nfs4_proc_open_confirm(data
);
2307 * Additional permission checks in order to distinguish between an
2308 * open for read, and an open for execute. This works around the
2309 * fact that NFSv4 OPEN treats read and execute permissions as being
2311 * Note that in the non-execute case, we want to turn off permission
2312 * checking if we just created a new file (POSIX open() semantics).
2314 static int nfs4_opendata_access(struct rpc_cred
*cred
,
2315 struct nfs4_opendata
*opendata
,
2316 struct nfs4_state
*state
, fmode_t fmode
,
2319 struct nfs_access_entry cache
;
2322 /* access call failed or for some reason the server doesn't
2323 * support any access modes -- defer access call until later */
2324 if (opendata
->o_res
.access_supported
== 0)
2329 * Use openflags to check for exec, because fmode won't
2330 * always have FMODE_EXEC set when file open for exec.
2332 if (openflags
& __FMODE_EXEC
) {
2333 /* ONLY check for exec rights */
2335 } else if ((fmode
& FMODE_READ
) && !opendata
->file_created
)
2339 cache
.jiffies
= jiffies
;
2340 nfs_access_set_mask(&cache
, opendata
->o_res
.access_result
);
2341 nfs_access_add_cache(state
->inode
, &cache
);
2343 if ((mask
& ~cache
.mask
& (MAY_READ
| MAY_EXEC
)) == 0)
2346 /* even though OPEN succeeded, access is denied. Close the file */
2347 nfs4_close_state(state
, fmode
);
2352 * Note: On error, nfs4_proc_open will free the struct nfs4_opendata
2354 static int _nfs4_proc_open(struct nfs4_opendata
*data
)
2356 struct inode
*dir
= d_inode(data
->dir
);
2357 struct nfs_server
*server
= NFS_SERVER(dir
);
2358 struct nfs_openargs
*o_arg
= &data
->o_arg
;
2359 struct nfs_openres
*o_res
= &data
->o_res
;
2362 status
= nfs4_run_open_task(data
, 0);
2363 if (!data
->rpc_done
)
2366 if (status
== -NFS4ERR_BADNAME
&&
2367 !(o_arg
->open_flags
& O_CREAT
))
2372 nfs_fattr_map_and_free_names(server
, &data
->f_attr
);
2374 if (o_arg
->open_flags
& O_CREAT
) {
2375 update_changeattr(dir
, &o_res
->cinfo
);
2376 if (o_arg
->open_flags
& O_EXCL
)
2377 data
->file_created
= 1;
2378 else if (o_res
->cinfo
.before
!= o_res
->cinfo
.after
)
2379 data
->file_created
= 1;
2381 if ((o_res
->rflags
& NFS4_OPEN_RESULT_LOCKTYPE_POSIX
) == 0)
2382 server
->caps
&= ~NFS_CAP_POSIX_LOCK
;
2383 if(o_res
->rflags
& NFS4_OPEN_RESULT_CONFIRM
) {
2384 status
= _nfs4_proc_open_confirm(data
);
2388 if (!(o_res
->f_attr
->valid
& NFS_ATTR_FATTR
))
2389 nfs4_proc_getattr(server
, &o_res
->fh
, o_res
->f_attr
, o_res
->f_label
);
2393 static int nfs4_recover_expired_lease(struct nfs_server
*server
)
2395 return nfs4_client_recover_expired_lease(server
->nfs_client
);
2400 * reclaim state on the server after a network partition.
2401 * Assumes caller holds the appropriate lock
2403 static int _nfs4_open_expired(struct nfs_open_context
*ctx
, struct nfs4_state
*state
)
2405 struct nfs4_opendata
*opendata
;
2408 opendata
= nfs4_open_recoverdata_alloc(ctx
, state
,
2409 NFS4_OPEN_CLAIM_FH
);
2410 if (IS_ERR(opendata
))
2411 return PTR_ERR(opendata
);
2412 ret
= nfs4_open_recover(opendata
, state
);
2414 d_drop(ctx
->dentry
);
2415 nfs4_opendata_put(opendata
);
2419 static int nfs4_do_open_expired(struct nfs_open_context
*ctx
, struct nfs4_state
*state
)
2421 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
2422 struct nfs4_exception exception
= { };
2426 err
= _nfs4_open_expired(ctx
, state
);
2427 trace_nfs4_open_expired(ctx
, 0, err
);
2428 if (nfs4_clear_cap_atomic_open_v1(server
, err
, &exception
))
2433 case -NFS4ERR_GRACE
:
2434 case -NFS4ERR_DELAY
:
2435 nfs4_handle_exception(server
, err
, &exception
);
2438 } while (exception
.retry
);
2443 static int nfs4_open_expired(struct nfs4_state_owner
*sp
, struct nfs4_state
*state
)
2445 struct nfs_open_context
*ctx
;
2448 ctx
= nfs4_state_find_open_context(state
);
2451 ret
= nfs4_do_open_expired(ctx
, state
);
2452 put_nfs_open_context(ctx
);
2456 static void nfs_finish_clear_delegation_stateid(struct nfs4_state
*state
,
2457 const nfs4_stateid
*stateid
)
2459 nfs_remove_bad_delegation(state
->inode
, stateid
);
2460 write_seqlock(&state
->seqlock
);
2461 nfs4_stateid_copy(&state
->stateid
, &state
->open_stateid
);
2462 write_sequnlock(&state
->seqlock
);
2463 clear_bit(NFS_DELEGATED_STATE
, &state
->flags
);
2466 static void nfs40_clear_delegation_stateid(struct nfs4_state
*state
)
2468 if (rcu_access_pointer(NFS_I(state
->inode
)->delegation
) != NULL
)
2469 nfs_finish_clear_delegation_stateid(state
, NULL
);
2472 static int nfs40_open_expired(struct nfs4_state_owner
*sp
, struct nfs4_state
*state
)
2474 /* NFSv4.0 doesn't allow for delegation recovery on open expire */
2475 nfs40_clear_delegation_stateid(state
);
2476 return nfs4_open_expired(sp
, state
);
2479 static int nfs40_test_and_free_expired_stateid(struct nfs_server
*server
,
2480 nfs4_stateid
*stateid
,
2481 struct rpc_cred
*cred
)
2483 return -NFS4ERR_BAD_STATEID
;
2486 #if defined(CONFIG_NFS_V4_1)
2487 static int nfs41_test_and_free_expired_stateid(struct nfs_server
*server
,
2488 nfs4_stateid
*stateid
,
2489 struct rpc_cred
*cred
)
2493 switch (stateid
->type
) {
2496 case NFS4_INVALID_STATEID_TYPE
:
2497 case NFS4_SPECIAL_STATEID_TYPE
:
2498 return -NFS4ERR_BAD_STATEID
;
2499 case NFS4_REVOKED_STATEID_TYPE
:
2503 status
= nfs41_test_stateid(server
, stateid
, cred
);
2505 case -NFS4ERR_EXPIRED
:
2506 case -NFS4ERR_ADMIN_REVOKED
:
2507 case -NFS4ERR_DELEG_REVOKED
:
2513 /* Ack the revoked state to the server */
2514 nfs41_free_stateid(server
, stateid
, cred
, true);
2515 return -NFS4ERR_EXPIRED
;
2518 static void nfs41_check_delegation_stateid(struct nfs4_state
*state
)
2520 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
2521 nfs4_stateid stateid
;
2522 struct nfs_delegation
*delegation
;
2523 struct rpc_cred
*cred
;
2526 /* Get the delegation credential for use by test/free_stateid */
2528 delegation
= rcu_dereference(NFS_I(state
->inode
)->delegation
);
2529 if (delegation
== NULL
) {
2534 nfs4_stateid_copy(&stateid
, &delegation
->stateid
);
2535 if (test_bit(NFS_DELEGATION_REVOKED
, &delegation
->flags
)) {
2537 nfs_finish_clear_delegation_stateid(state
, &stateid
);
2541 if (!test_and_clear_bit(NFS_DELEGATION_TEST_EXPIRED
, &delegation
->flags
)) {
2546 cred
= get_rpccred(delegation
->cred
);
2548 status
= nfs41_test_and_free_expired_stateid(server
, &stateid
, cred
);
2549 trace_nfs4_test_delegation_stateid(state
, NULL
, status
);
2550 if (status
== -NFS4ERR_EXPIRED
|| status
== -NFS4ERR_BAD_STATEID
)
2551 nfs_finish_clear_delegation_stateid(state
, &stateid
);
2557 * nfs41_check_expired_locks - possibly free a lock stateid
2559 * @state: NFSv4 state for an inode
2561 * Returns NFS_OK if recovery for this stateid is now finished.
2562 * Otherwise a negative NFS4ERR value is returned.
2564 static int nfs41_check_expired_locks(struct nfs4_state
*state
)
2566 int status
, ret
= NFS_OK
;
2567 struct nfs4_lock_state
*lsp
, *prev
= NULL
;
2568 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
2570 if (!test_bit(LK_STATE_IN_USE
, &state
->flags
))
2573 spin_lock(&state
->state_lock
);
2574 list_for_each_entry(lsp
, &state
->lock_states
, ls_locks
) {
2575 if (test_bit(NFS_LOCK_INITIALIZED
, &lsp
->ls_flags
)) {
2576 struct rpc_cred
*cred
= lsp
->ls_state
->owner
->so_cred
;
2578 atomic_inc(&lsp
->ls_count
);
2579 spin_unlock(&state
->state_lock
);
2581 nfs4_put_lock_state(prev
);
2584 status
= nfs41_test_and_free_expired_stateid(server
,
2587 trace_nfs4_test_lock_stateid(state
, lsp
, status
);
2588 if (status
== -NFS4ERR_EXPIRED
||
2589 status
== -NFS4ERR_BAD_STATEID
) {
2590 clear_bit(NFS_LOCK_INITIALIZED
, &lsp
->ls_flags
);
2591 lsp
->ls_stateid
.type
= NFS4_INVALID_STATEID_TYPE
;
2592 if (!recover_lost_locks
)
2593 set_bit(NFS_LOCK_LOST
, &lsp
->ls_flags
);
2594 } else if (status
!= NFS_OK
) {
2596 nfs4_put_lock_state(prev
);
2599 spin_lock(&state
->state_lock
);
2602 spin_unlock(&state
->state_lock
);
2603 nfs4_put_lock_state(prev
);
2609 * nfs41_check_open_stateid - possibly free an open stateid
2611 * @state: NFSv4 state for an inode
2613 * Returns NFS_OK if recovery for this stateid is now finished.
2614 * Otherwise a negative NFS4ERR value is returned.
2616 static int nfs41_check_open_stateid(struct nfs4_state
*state
)
2618 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
2619 nfs4_stateid
*stateid
= &state
->open_stateid
;
2620 struct rpc_cred
*cred
= state
->owner
->so_cred
;
2623 if (test_bit(NFS_OPEN_STATE
, &state
->flags
) == 0) {
2624 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) == 0) {
2625 if (nfs4_have_delegation(state
->inode
, state
->state
))
2627 return -NFS4ERR_OPENMODE
;
2629 return -NFS4ERR_BAD_STATEID
;
2631 status
= nfs41_test_and_free_expired_stateid(server
, stateid
, cred
);
2632 trace_nfs4_test_open_stateid(state
, NULL
, status
);
2633 if (status
== -NFS4ERR_EXPIRED
|| status
== -NFS4ERR_BAD_STATEID
) {
2634 clear_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
2635 clear_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
2636 clear_bit(NFS_O_RDWR_STATE
, &state
->flags
);
2637 clear_bit(NFS_OPEN_STATE
, &state
->flags
);
2638 stateid
->type
= NFS4_INVALID_STATEID_TYPE
;
2640 if (status
!= NFS_OK
)
2642 if (nfs_open_stateid_recover_openmode(state
))
2643 return -NFS4ERR_OPENMODE
;
2647 static int nfs41_open_expired(struct nfs4_state_owner
*sp
, struct nfs4_state
*state
)
2651 nfs41_check_delegation_stateid(state
);
2652 status
= nfs41_check_expired_locks(state
);
2653 if (status
!= NFS_OK
)
2655 status
= nfs41_check_open_stateid(state
);
2656 if (status
!= NFS_OK
)
2657 status
= nfs4_open_expired(sp
, state
);
2663 * on an EXCLUSIVE create, the server should send back a bitmask with FATTR4-*
2664 * fields corresponding to attributes that were used to store the verifier.
2665 * Make sure we clobber those fields in the later setattr call
2667 static inline void nfs4_exclusive_attrset(struct nfs4_opendata
*opendata
,
2668 struct iattr
*sattr
, struct nfs4_label
**label
)
2670 const u32
*attrset
= opendata
->o_res
.attrset
;
2672 if ((attrset
[1] & FATTR4_WORD1_TIME_ACCESS
) &&
2673 !(sattr
->ia_valid
& ATTR_ATIME_SET
))
2674 sattr
->ia_valid
|= ATTR_ATIME
;
2676 if ((attrset
[1] & FATTR4_WORD1_TIME_MODIFY
) &&
2677 !(sattr
->ia_valid
& ATTR_MTIME_SET
))
2678 sattr
->ia_valid
|= ATTR_MTIME
;
2680 /* Except MODE, it seems harmless of setting twice. */
2681 if ((attrset
[1] & FATTR4_WORD1_MODE
))
2682 sattr
->ia_valid
&= ~ATTR_MODE
;
2684 if (attrset
[2] & FATTR4_WORD2_SECURITY_LABEL
)
2688 static int _nfs4_open_and_get_state(struct nfs4_opendata
*opendata
,
2691 struct nfs_open_context
*ctx
)
2693 struct nfs4_state_owner
*sp
= opendata
->owner
;
2694 struct nfs_server
*server
= sp
->so_server
;
2695 struct dentry
*dentry
;
2696 struct nfs4_state
*state
;
2700 seq
= raw_seqcount_begin(&sp
->so_reclaim_seqcount
);
2702 ret
= _nfs4_proc_open(opendata
);
2706 state
= nfs4_opendata_to_nfs4_state(opendata
);
2707 ret
= PTR_ERR(state
);
2710 if (server
->caps
& NFS_CAP_POSIX_LOCK
)
2711 set_bit(NFS_STATE_POSIX_LOCKS
, &state
->flags
);
2712 if (opendata
->o_res
.rflags
& NFS4_OPEN_RESULT_MAY_NOTIFY_LOCK
)
2713 set_bit(NFS_STATE_MAY_NOTIFY_LOCK
, &state
->flags
);
2715 dentry
= opendata
->dentry
;
2716 if (d_really_is_negative(dentry
)) {
2717 struct dentry
*alias
;
2719 alias
= d_exact_alias(dentry
, state
->inode
);
2721 alias
= d_splice_alias(igrab(state
->inode
), dentry
);
2722 /* d_splice_alias() can't fail here - it's a non-directory */
2725 ctx
->dentry
= dentry
= alias
;
2727 nfs_set_verifier(dentry
,
2728 nfs_save_change_attribute(d_inode(opendata
->dir
)));
2731 ret
= nfs4_opendata_access(sp
->so_cred
, opendata
, state
, fmode
, flags
);
2736 if (d_inode(dentry
) == state
->inode
) {
2737 nfs_inode_attach_open_context(ctx
);
2738 if (read_seqcount_retry(&sp
->so_reclaim_seqcount
, seq
))
2739 nfs4_schedule_stateid_recovery(server
, state
);
2746 * Returns a referenced nfs4_state
2748 static int _nfs4_do_open(struct inode
*dir
,
2749 struct nfs_open_context
*ctx
,
2751 struct iattr
*sattr
,
2752 struct nfs4_label
*label
,
2755 struct nfs4_state_owner
*sp
;
2756 struct nfs4_state
*state
= NULL
;
2757 struct nfs_server
*server
= NFS_SERVER(dir
);
2758 struct nfs4_opendata
*opendata
;
2759 struct dentry
*dentry
= ctx
->dentry
;
2760 struct rpc_cred
*cred
= ctx
->cred
;
2761 struct nfs4_threshold
**ctx_th
= &ctx
->mdsthreshold
;
2762 fmode_t fmode
= ctx
->mode
& (FMODE_READ
|FMODE_WRITE
|FMODE_EXEC
);
2763 enum open_claim_type4 claim
= NFS4_OPEN_CLAIM_NULL
;
2764 struct nfs4_label
*olabel
= NULL
;
2767 /* Protect against reboot recovery conflicts */
2769 sp
= nfs4_get_state_owner(server
, cred
, GFP_KERNEL
);
2771 dprintk("nfs4_do_open: nfs4_get_state_owner failed!\n");
2774 status
= nfs4_recover_expired_lease(server
);
2776 goto err_put_state_owner
;
2777 if (d_really_is_positive(dentry
))
2778 nfs4_return_incompatible_delegation(d_inode(dentry
), fmode
);
2780 if (d_really_is_positive(dentry
))
2781 claim
= NFS4_OPEN_CLAIM_FH
;
2782 opendata
= nfs4_opendata_alloc(dentry
, sp
, fmode
, flags
, sattr
,
2783 label
, claim
, GFP_KERNEL
);
2784 if (opendata
== NULL
)
2785 goto err_put_state_owner
;
2788 olabel
= nfs4_label_alloc(server
, GFP_KERNEL
);
2789 if (IS_ERR(olabel
)) {
2790 status
= PTR_ERR(olabel
);
2791 goto err_opendata_put
;
2795 if (server
->attr_bitmask
[2] & FATTR4_WORD2_MDSTHRESHOLD
) {
2796 if (!opendata
->f_attr
.mdsthreshold
) {
2797 opendata
->f_attr
.mdsthreshold
= pnfs_mdsthreshold_alloc();
2798 if (!opendata
->f_attr
.mdsthreshold
)
2799 goto err_free_label
;
2801 opendata
->o_arg
.open_bitmap
= &nfs4_pnfs_open_bitmap
[0];
2803 if (d_really_is_positive(dentry
))
2804 opendata
->state
= nfs4_get_open_state(d_inode(dentry
), sp
);
2806 status
= _nfs4_open_and_get_state(opendata
, fmode
, flags
, ctx
);
2808 goto err_free_label
;
2811 if ((opendata
->o_arg
.open_flags
& (O_CREAT
|O_EXCL
)) == (O_CREAT
|O_EXCL
) &&
2812 (opendata
->o_arg
.createmode
!= NFS4_CREATE_GUARDED
)) {
2813 nfs4_exclusive_attrset(opendata
, sattr
, &label
);
2815 * send create attributes which was not set by open
2816 * with an extra setattr.
2818 if (sattr
->ia_valid
& NFS4_VALID_ATTRS
) {
2819 nfs_fattr_init(opendata
->o_res
.f_attr
);
2820 status
= nfs4_do_setattr(state
->inode
, cred
,
2821 opendata
->o_res
.f_attr
, sattr
,
2822 state
, label
, olabel
);
2824 nfs_setattr_update_inode(state
->inode
, sattr
,
2825 opendata
->o_res
.f_attr
);
2826 nfs_setsecurity(state
->inode
, opendata
->o_res
.f_attr
, olabel
);
2830 if (opened
&& opendata
->file_created
)
2831 *opened
|= FILE_CREATED
;
2833 if (pnfs_use_threshold(ctx_th
, opendata
->f_attr
.mdsthreshold
, server
)) {
2834 *ctx_th
= opendata
->f_attr
.mdsthreshold
;
2835 opendata
->f_attr
.mdsthreshold
= NULL
;
2838 nfs4_label_free(olabel
);
2840 nfs4_opendata_put(opendata
);
2841 nfs4_put_state_owner(sp
);
2844 nfs4_label_free(olabel
);
2846 nfs4_opendata_put(opendata
);
2847 err_put_state_owner
:
2848 nfs4_put_state_owner(sp
);
2854 static struct nfs4_state
*nfs4_do_open(struct inode
*dir
,
2855 struct nfs_open_context
*ctx
,
2857 struct iattr
*sattr
,
2858 struct nfs4_label
*label
,
2861 struct nfs_server
*server
= NFS_SERVER(dir
);
2862 struct nfs4_exception exception
= { };
2863 struct nfs4_state
*res
;
2867 status
= _nfs4_do_open(dir
, ctx
, flags
, sattr
, label
, opened
);
2869 trace_nfs4_open_file(ctx
, flags
, status
);
2872 /* NOTE: BAD_SEQID means the server and client disagree about the
2873 * book-keeping w.r.t. state-changing operations
2874 * (OPEN/CLOSE/LOCK/LOCKU...)
2875 * It is actually a sign of a bug on the client or on the server.
2877 * If we receive a BAD_SEQID error in the particular case of
2878 * doing an OPEN, we assume that nfs_increment_open_seqid() will
2879 * have unhashed the old state_owner for us, and that we can
2880 * therefore safely retry using a new one. We should still warn
2881 * the user though...
2883 if (status
== -NFS4ERR_BAD_SEQID
) {
2884 pr_warn_ratelimited("NFS: v4 server %s "
2885 " returned a bad sequence-id error!\n",
2886 NFS_SERVER(dir
)->nfs_client
->cl_hostname
);
2887 exception
.retry
= 1;
2891 * BAD_STATEID on OPEN means that the server cancelled our
2892 * state before it received the OPEN_CONFIRM.
2893 * Recover by retrying the request as per the discussion
2894 * on Page 181 of RFC3530.
2896 if (status
== -NFS4ERR_BAD_STATEID
) {
2897 exception
.retry
= 1;
2900 if (status
== -EAGAIN
) {
2901 /* We must have found a delegation */
2902 exception
.retry
= 1;
2905 if (nfs4_clear_cap_atomic_open_v1(server
, status
, &exception
))
2907 res
= ERR_PTR(nfs4_handle_exception(server
,
2908 status
, &exception
));
2909 } while (exception
.retry
);
2913 static int _nfs4_do_setattr(struct inode
*inode
,
2914 struct nfs_setattrargs
*arg
,
2915 struct nfs_setattrres
*res
,
2916 struct rpc_cred
*cred
,
2917 struct nfs4_state
*state
)
2919 struct nfs_server
*server
= NFS_SERVER(inode
);
2920 struct rpc_message msg
= {
2921 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETATTR
],
2926 struct rpc_cred
*delegation_cred
= NULL
;
2927 unsigned long timestamp
= jiffies
;
2932 nfs_fattr_init(res
->fattr
);
2934 /* Servers should only apply open mode checks for file size changes */
2935 truncate
= (arg
->iap
->ia_valid
& ATTR_SIZE
) ? true : false;
2936 fmode
= truncate
? FMODE_WRITE
: FMODE_READ
;
2938 if (nfs4_copy_delegation_stateid(inode
, fmode
, &arg
->stateid
, &delegation_cred
)) {
2939 /* Use that stateid */
2940 } else if (truncate
&& state
!= NULL
) {
2941 struct nfs_lockowner lockowner
= {
2942 .l_owner
= current
->files
,
2943 .l_pid
= current
->tgid
,
2945 if (!nfs4_valid_open_stateid(state
))
2947 if (nfs4_select_rw_stateid(state
, FMODE_WRITE
, &lockowner
,
2948 &arg
->stateid
, &delegation_cred
) == -EIO
)
2951 nfs4_stateid_copy(&arg
->stateid
, &zero_stateid
);
2952 if (delegation_cred
)
2953 msg
.rpc_cred
= delegation_cred
;
2955 status
= nfs4_call_sync(server
->client
, server
, &msg
, &arg
->seq_args
, &res
->seq_res
, 1);
2957 put_rpccred(delegation_cred
);
2958 if (status
== 0 && state
!= NULL
)
2959 renew_lease(server
, timestamp
);
2960 trace_nfs4_setattr(inode
, &arg
->stateid
, status
);
2964 static int nfs4_do_setattr(struct inode
*inode
, struct rpc_cred
*cred
,
2965 struct nfs_fattr
*fattr
, struct iattr
*sattr
,
2966 struct nfs4_state
*state
, struct nfs4_label
*ilabel
,
2967 struct nfs4_label
*olabel
)
2969 struct nfs_server
*server
= NFS_SERVER(inode
);
2970 struct nfs_setattrargs arg
= {
2971 .fh
= NFS_FH(inode
),
2974 .bitmask
= server
->attr_bitmask
,
2977 struct nfs_setattrres res
= {
2982 struct nfs4_exception exception
= {
2985 .stateid
= &arg
.stateid
,
2989 arg
.bitmask
= nfs4_bitmask(server
, ilabel
);
2991 arg
.bitmask
= nfs4_bitmask(server
, olabel
);
2994 err
= _nfs4_do_setattr(inode
, &arg
, &res
, cred
, state
);
2996 case -NFS4ERR_OPENMODE
:
2997 if (!(sattr
->ia_valid
& ATTR_SIZE
)) {
2998 pr_warn_once("NFSv4: server %s is incorrectly "
2999 "applying open mode checks to "
3000 "a SETATTR that is not "
3001 "changing file size.\n",
3002 server
->nfs_client
->cl_hostname
);
3004 if (state
&& !(state
->state
& FMODE_WRITE
)) {
3006 if (sattr
->ia_valid
& ATTR_OPEN
)
3011 err
= nfs4_handle_exception(server
, err
, &exception
);
3012 } while (exception
.retry
);
3018 nfs4_wait_on_layoutreturn(struct inode
*inode
, struct rpc_task
*task
)
3020 if (inode
== NULL
|| !nfs_have_layout(inode
))
3023 return pnfs_wait_on_layoutreturn(inode
, task
);
3026 struct nfs4_closedata
{
3027 struct inode
*inode
;
3028 struct nfs4_state
*state
;
3029 struct nfs_closeargs arg
;
3030 struct nfs_closeres res
;
3031 struct nfs_fattr fattr
;
3032 unsigned long timestamp
;
3037 static void nfs4_free_closedata(void *data
)
3039 struct nfs4_closedata
*calldata
= data
;
3040 struct nfs4_state_owner
*sp
= calldata
->state
->owner
;
3041 struct super_block
*sb
= calldata
->state
->inode
->i_sb
;
3044 pnfs_roc_release(calldata
->state
->inode
);
3045 nfs4_put_open_state(calldata
->state
);
3046 nfs_free_seqid(calldata
->arg
.seqid
);
3047 nfs4_put_state_owner(sp
);
3048 nfs_sb_deactive(sb
);
3052 static void nfs4_close_done(struct rpc_task
*task
, void *data
)
3054 struct nfs4_closedata
*calldata
= data
;
3055 struct nfs4_state
*state
= calldata
->state
;
3056 struct nfs_server
*server
= NFS_SERVER(calldata
->inode
);
3057 nfs4_stateid
*res_stateid
= NULL
;
3059 dprintk("%s: begin!\n", __func__
);
3060 if (!nfs4_sequence_done(task
, &calldata
->res
.seq_res
))
3062 trace_nfs4_close(state
, &calldata
->arg
, &calldata
->res
, task
->tk_status
);
3063 /* hmm. we are done with the inode, and in the process of freeing
3064 * the state_owner. we keep this around to process errors
3066 switch (task
->tk_status
) {
3068 res_stateid
= &calldata
->res
.stateid
;
3070 pnfs_roc_set_barrier(state
->inode
,
3071 calldata
->roc_barrier
);
3072 renew_lease(server
, calldata
->timestamp
);
3074 case -NFS4ERR_ADMIN_REVOKED
:
3075 case -NFS4ERR_STALE_STATEID
:
3076 case -NFS4ERR_EXPIRED
:
3077 nfs4_free_revoked_stateid(server
,
3078 &calldata
->arg
.stateid
,
3079 task
->tk_msg
.rpc_cred
);
3080 case -NFS4ERR_OLD_STATEID
:
3081 case -NFS4ERR_BAD_STATEID
:
3082 if (!nfs4_stateid_match(&calldata
->arg
.stateid
,
3083 &state
->open_stateid
)) {
3084 rpc_restart_call_prepare(task
);
3087 if (calldata
->arg
.fmode
== 0)
3090 if (nfs4_async_handle_error(task
, server
, state
, NULL
) == -EAGAIN
) {
3091 rpc_restart_call_prepare(task
);
3095 nfs_clear_open_stateid(state
, &calldata
->arg
.stateid
,
3096 res_stateid
, calldata
->arg
.fmode
);
3098 nfs_release_seqid(calldata
->arg
.seqid
);
3099 nfs_refresh_inode(calldata
->inode
, calldata
->res
.fattr
);
3100 dprintk("%s: done, ret = %d!\n", __func__
, task
->tk_status
);
3103 static void nfs4_close_prepare(struct rpc_task
*task
, void *data
)
3105 struct nfs4_closedata
*calldata
= data
;
3106 struct nfs4_state
*state
= calldata
->state
;
3107 struct inode
*inode
= calldata
->inode
;
3108 bool is_rdonly
, is_wronly
, is_rdwr
;
3111 dprintk("%s: begin!\n", __func__
);
3112 if (nfs_wait_on_sequence(calldata
->arg
.seqid
, task
) != 0)
3115 task
->tk_msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_OPEN_DOWNGRADE
];
3116 spin_lock(&state
->owner
->so_lock
);
3117 is_rdwr
= test_bit(NFS_O_RDWR_STATE
, &state
->flags
);
3118 is_rdonly
= test_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
3119 is_wronly
= test_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
3120 nfs4_stateid_copy(&calldata
->arg
.stateid
, &state
->open_stateid
);
3121 /* Calculate the change in open mode */
3122 calldata
->arg
.fmode
= 0;
3123 if (state
->n_rdwr
== 0) {
3124 if (state
->n_rdonly
== 0)
3125 call_close
|= is_rdonly
;
3127 calldata
->arg
.fmode
|= FMODE_READ
;
3128 if (state
->n_wronly
== 0)
3129 call_close
|= is_wronly
;
3131 calldata
->arg
.fmode
|= FMODE_WRITE
;
3132 if (calldata
->arg
.fmode
!= (FMODE_READ
|FMODE_WRITE
))
3133 call_close
|= is_rdwr
;
3135 calldata
->arg
.fmode
|= FMODE_READ
|FMODE_WRITE
;
3137 if (!nfs4_valid_open_stateid(state
) ||
3138 test_bit(NFS_OPEN_STATE
, &state
->flags
) == 0)
3140 spin_unlock(&state
->owner
->so_lock
);
3143 /* Note: exit _without_ calling nfs4_close_done */
3147 if (nfs4_wait_on_layoutreturn(inode
, task
)) {
3148 nfs_release_seqid(calldata
->arg
.seqid
);
3152 if (calldata
->arg
.fmode
== 0)
3153 task
->tk_msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_CLOSE
];
3155 pnfs_roc_get_barrier(inode
, &calldata
->roc_barrier
);
3157 calldata
->arg
.share_access
=
3158 nfs4_map_atomic_open_share(NFS_SERVER(inode
),
3159 calldata
->arg
.fmode
, 0);
3161 nfs_fattr_init(calldata
->res
.fattr
);
3162 calldata
->timestamp
= jiffies
;
3163 if (nfs4_setup_sequence(NFS_SERVER(inode
),
3164 &calldata
->arg
.seq_args
,
3165 &calldata
->res
.seq_res
,
3167 nfs_release_seqid(calldata
->arg
.seqid
);
3168 dprintk("%s: done!\n", __func__
);
3171 task
->tk_action
= NULL
;
3173 nfs4_sequence_done(task
, &calldata
->res
.seq_res
);
3176 static const struct rpc_call_ops nfs4_close_ops
= {
3177 .rpc_call_prepare
= nfs4_close_prepare
,
3178 .rpc_call_done
= nfs4_close_done
,
3179 .rpc_release
= nfs4_free_closedata
,
3182 static bool nfs4_roc(struct inode
*inode
)
3184 if (!nfs_have_layout(inode
))
3186 return pnfs_roc(inode
);
3190 * It is possible for data to be read/written from a mem-mapped file
3191 * after the sys_close call (which hits the vfs layer as a flush).
3192 * This means that we can't safely call nfsv4 close on a file until
3193 * the inode is cleared. This in turn means that we are not good
3194 * NFSv4 citizens - we do not indicate to the server to update the file's
3195 * share state even when we are done with one of the three share
3196 * stateid's in the inode.
3198 * NOTE: Caller must be holding the sp->so_owner semaphore!
3200 int nfs4_do_close(struct nfs4_state
*state
, gfp_t gfp_mask
, int wait
)
3202 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
3203 struct nfs_seqid
*(*alloc_seqid
)(struct nfs_seqid_counter
*, gfp_t
);
3204 struct nfs4_closedata
*calldata
;
3205 struct nfs4_state_owner
*sp
= state
->owner
;
3206 struct rpc_task
*task
;
3207 struct rpc_message msg
= {
3208 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_CLOSE
],
3209 .rpc_cred
= state
->owner
->so_cred
,
3211 struct rpc_task_setup task_setup_data
= {
3212 .rpc_client
= server
->client
,
3213 .rpc_message
= &msg
,
3214 .callback_ops
= &nfs4_close_ops
,
3215 .workqueue
= nfsiod_workqueue
,
3216 .flags
= RPC_TASK_ASYNC
,
3218 int status
= -ENOMEM
;
3220 nfs4_state_protect(server
->nfs_client
, NFS_SP4_MACH_CRED_CLEANUP
,
3221 &task_setup_data
.rpc_client
, &msg
);
3223 calldata
= kzalloc(sizeof(*calldata
), gfp_mask
);
3224 if (calldata
== NULL
)
3226 nfs4_init_sequence(&calldata
->arg
.seq_args
, &calldata
->res
.seq_res
, 1);
3227 calldata
->inode
= state
->inode
;
3228 calldata
->state
= state
;
3229 calldata
->arg
.fh
= NFS_FH(state
->inode
);
3230 /* Serialization for the sequence id */
3231 alloc_seqid
= server
->nfs_client
->cl_mvops
->alloc_seqid
;
3232 calldata
->arg
.seqid
= alloc_seqid(&state
->owner
->so_seqid
, gfp_mask
);
3233 if (IS_ERR(calldata
->arg
.seqid
))
3234 goto out_free_calldata
;
3235 calldata
->arg
.fmode
= 0;
3236 calldata
->arg
.bitmask
= server
->cache_consistency_bitmask
;
3237 calldata
->res
.fattr
= &calldata
->fattr
;
3238 calldata
->res
.seqid
= calldata
->arg
.seqid
;
3239 calldata
->res
.server
= server
;
3240 calldata
->roc
= nfs4_roc(state
->inode
);
3241 nfs_sb_active(calldata
->inode
->i_sb
);
3243 msg
.rpc_argp
= &calldata
->arg
;
3244 msg
.rpc_resp
= &calldata
->res
;
3245 task_setup_data
.callback_data
= calldata
;
3246 task
= rpc_run_task(&task_setup_data
);
3248 return PTR_ERR(task
);
3251 status
= rpc_wait_for_completion_task(task
);
3257 nfs4_put_open_state(state
);
3258 nfs4_put_state_owner(sp
);
3262 static struct inode
*
3263 nfs4_atomic_open(struct inode
*dir
, struct nfs_open_context
*ctx
,
3264 int open_flags
, struct iattr
*attr
, int *opened
)
3266 struct nfs4_state
*state
;
3267 struct nfs4_label l
= {0, 0, 0, NULL
}, *label
= NULL
;
3269 label
= nfs4_label_init_security(dir
, ctx
->dentry
, attr
, &l
);
3271 /* Protect against concurrent sillydeletes */
3272 state
= nfs4_do_open(dir
, ctx
, open_flags
, attr
, label
, opened
);
3274 nfs4_label_release_security(label
);
3277 return ERR_CAST(state
);
3278 return state
->inode
;
3281 static void nfs4_close_context(struct nfs_open_context
*ctx
, int is_sync
)
3283 if (ctx
->state
== NULL
)
3286 nfs4_close_sync(ctx
->state
, ctx
->mode
);
3288 nfs4_close_state(ctx
->state
, ctx
->mode
);
3291 #define FATTR4_WORD1_NFS40_MASK (2*FATTR4_WORD1_MOUNTED_ON_FILEID - 1UL)
3292 #define FATTR4_WORD2_NFS41_MASK (2*FATTR4_WORD2_SUPPATTR_EXCLCREAT - 1UL)
3293 #define FATTR4_WORD2_NFS42_MASK (2*FATTR4_WORD2_SECURITY_LABEL - 1UL)
3295 static int _nfs4_server_capabilities(struct nfs_server
*server
, struct nfs_fh
*fhandle
)
3297 u32 bitmask
[3] = {}, minorversion
= server
->nfs_client
->cl_minorversion
;
3298 struct nfs4_server_caps_arg args
= {
3302 struct nfs4_server_caps_res res
= {};
3303 struct rpc_message msg
= {
3304 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SERVER_CAPS
],
3310 bitmask
[0] = FATTR4_WORD0_SUPPORTED_ATTRS
|
3311 FATTR4_WORD0_FH_EXPIRE_TYPE
|
3312 FATTR4_WORD0_LINK_SUPPORT
|
3313 FATTR4_WORD0_SYMLINK_SUPPORT
|
3314 FATTR4_WORD0_ACLSUPPORT
;
3316 bitmask
[2] = FATTR4_WORD2_SUPPATTR_EXCLCREAT
;
3318 status
= nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
3320 /* Sanity check the server answers */
3321 switch (minorversion
) {
3323 res
.attr_bitmask
[1] &= FATTR4_WORD1_NFS40_MASK
;
3324 res
.attr_bitmask
[2] = 0;
3327 res
.attr_bitmask
[2] &= FATTR4_WORD2_NFS41_MASK
;
3330 res
.attr_bitmask
[2] &= FATTR4_WORD2_NFS42_MASK
;
3332 memcpy(server
->attr_bitmask
, res
.attr_bitmask
, sizeof(server
->attr_bitmask
));
3333 server
->caps
&= ~(NFS_CAP_ACLS
|NFS_CAP_HARDLINKS
|
3334 NFS_CAP_SYMLINKS
|NFS_CAP_FILEID
|
3335 NFS_CAP_MODE
|NFS_CAP_NLINK
|NFS_CAP_OWNER
|
3336 NFS_CAP_OWNER_GROUP
|NFS_CAP_ATIME
|
3337 NFS_CAP_CTIME
|NFS_CAP_MTIME
|
3338 NFS_CAP_SECURITY_LABEL
);
3339 if (res
.attr_bitmask
[0] & FATTR4_WORD0_ACL
&&
3340 res
.acl_bitmask
& ACL4_SUPPORT_ALLOW_ACL
)
3341 server
->caps
|= NFS_CAP_ACLS
;
3342 if (res
.has_links
!= 0)
3343 server
->caps
|= NFS_CAP_HARDLINKS
;
3344 if (res
.has_symlinks
!= 0)
3345 server
->caps
|= NFS_CAP_SYMLINKS
;
3346 if (res
.attr_bitmask
[0] & FATTR4_WORD0_FILEID
)
3347 server
->caps
|= NFS_CAP_FILEID
;
3348 if (res
.attr_bitmask
[1] & FATTR4_WORD1_MODE
)
3349 server
->caps
|= NFS_CAP_MODE
;
3350 if (res
.attr_bitmask
[1] & FATTR4_WORD1_NUMLINKS
)
3351 server
->caps
|= NFS_CAP_NLINK
;
3352 if (res
.attr_bitmask
[1] & FATTR4_WORD1_OWNER
)
3353 server
->caps
|= NFS_CAP_OWNER
;
3354 if (res
.attr_bitmask
[1] & FATTR4_WORD1_OWNER_GROUP
)
3355 server
->caps
|= NFS_CAP_OWNER_GROUP
;
3356 if (res
.attr_bitmask
[1] & FATTR4_WORD1_TIME_ACCESS
)
3357 server
->caps
|= NFS_CAP_ATIME
;
3358 if (res
.attr_bitmask
[1] & FATTR4_WORD1_TIME_METADATA
)
3359 server
->caps
|= NFS_CAP_CTIME
;
3360 if (res
.attr_bitmask
[1] & FATTR4_WORD1_TIME_MODIFY
)
3361 server
->caps
|= NFS_CAP_MTIME
;
3362 #ifdef CONFIG_NFS_V4_SECURITY_LABEL
3363 if (res
.attr_bitmask
[2] & FATTR4_WORD2_SECURITY_LABEL
)
3364 server
->caps
|= NFS_CAP_SECURITY_LABEL
;
3366 memcpy(server
->attr_bitmask_nl
, res
.attr_bitmask
,
3367 sizeof(server
->attr_bitmask
));
3368 server
->attr_bitmask_nl
[2] &= ~FATTR4_WORD2_SECURITY_LABEL
;
3370 memcpy(server
->cache_consistency_bitmask
, res
.attr_bitmask
, sizeof(server
->cache_consistency_bitmask
));
3371 server
->cache_consistency_bitmask
[0] &= FATTR4_WORD0_CHANGE
|FATTR4_WORD0_SIZE
;
3372 server
->cache_consistency_bitmask
[1] &= FATTR4_WORD1_TIME_METADATA
|FATTR4_WORD1_TIME_MODIFY
;
3373 server
->cache_consistency_bitmask
[2] = 0;
3374 memcpy(server
->exclcreat_bitmask
, res
.exclcreat_bitmask
,
3375 sizeof(server
->exclcreat_bitmask
));
3376 server
->acl_bitmask
= res
.acl_bitmask
;
3377 server
->fh_expire_type
= res
.fh_expire_type
;
3383 int nfs4_server_capabilities(struct nfs_server
*server
, struct nfs_fh
*fhandle
)
3385 struct nfs4_exception exception
= { };
3388 err
= nfs4_handle_exception(server
,
3389 _nfs4_server_capabilities(server
, fhandle
),
3391 } while (exception
.retry
);
3395 static int _nfs4_lookup_root(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
3396 struct nfs_fsinfo
*info
)
3399 struct nfs4_lookup_root_arg args
= {
3402 struct nfs4_lookup_res res
= {
3404 .fattr
= info
->fattr
,
3407 struct rpc_message msg
= {
3408 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOOKUP_ROOT
],
3413 bitmask
[0] = nfs4_fattr_bitmap
[0];
3414 bitmask
[1] = nfs4_fattr_bitmap
[1];
3416 * Process the label in the upcoming getfattr
3418 bitmask
[2] = nfs4_fattr_bitmap
[2] & ~FATTR4_WORD2_SECURITY_LABEL
;
3420 nfs_fattr_init(info
->fattr
);
3421 return nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
3424 static int nfs4_lookup_root(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
3425 struct nfs_fsinfo
*info
)
3427 struct nfs4_exception exception
= { };
3430 err
= _nfs4_lookup_root(server
, fhandle
, info
);
3431 trace_nfs4_lookup_root(server
, fhandle
, info
->fattr
, err
);
3434 case -NFS4ERR_WRONGSEC
:
3437 err
= nfs4_handle_exception(server
, err
, &exception
);
3439 } while (exception
.retry
);
3444 static int nfs4_lookup_root_sec(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
3445 struct nfs_fsinfo
*info
, rpc_authflavor_t flavor
)
3447 struct rpc_auth_create_args auth_args
= {
3448 .pseudoflavor
= flavor
,
3450 struct rpc_auth
*auth
;
3453 auth
= rpcauth_create(&auth_args
, server
->client
);
3458 ret
= nfs4_lookup_root(server
, fhandle
, info
);
3464 * Retry pseudoroot lookup with various security flavors. We do this when:
3466 * NFSv4.0: the PUTROOTFH operation returns NFS4ERR_WRONGSEC
3467 * NFSv4.1: the server does not support the SECINFO_NO_NAME operation
3469 * Returns zero on success, or a negative NFS4ERR value, or a
3470 * negative errno value.
3472 static int nfs4_find_root_sec(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
3473 struct nfs_fsinfo
*info
)
3475 /* Per 3530bis 15.33.5 */
3476 static const rpc_authflavor_t flav_array
[] = {
3480 RPC_AUTH_UNIX
, /* courtesy */
3483 int status
= -EPERM
;
3486 if (server
->auth_info
.flavor_len
> 0) {
3487 /* try each flavor specified by user */
3488 for (i
= 0; i
< server
->auth_info
.flavor_len
; i
++) {
3489 status
= nfs4_lookup_root_sec(server
, fhandle
, info
,
3490 server
->auth_info
.flavors
[i
]);
3491 if (status
== -NFS4ERR_WRONGSEC
|| status
== -EACCES
)
3496 /* no flavors specified by user, try default list */
3497 for (i
= 0; i
< ARRAY_SIZE(flav_array
); i
++) {
3498 status
= nfs4_lookup_root_sec(server
, fhandle
, info
,
3500 if (status
== -NFS4ERR_WRONGSEC
|| status
== -EACCES
)
3507 * -EACCESS could mean that the user doesn't have correct permissions
3508 * to access the mount. It could also mean that we tried to mount
3509 * with a gss auth flavor, but rpc.gssd isn't running. Either way,
3510 * existing mount programs don't handle -EACCES very well so it should
3511 * be mapped to -EPERM instead.
3513 if (status
== -EACCES
)
3519 * nfs4_proc_get_rootfh - get file handle for server's pseudoroot
3520 * @server: initialized nfs_server handle
3521 * @fhandle: we fill in the pseudo-fs root file handle
3522 * @info: we fill in an FSINFO struct
3523 * @auth_probe: probe the auth flavours
3525 * Returns zero on success, or a negative errno.
3527 int nfs4_proc_get_rootfh(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
3528 struct nfs_fsinfo
*info
,
3534 status
= nfs4_lookup_root(server
, fhandle
, info
);
3536 if (auth_probe
|| status
== NFS4ERR_WRONGSEC
)
3537 status
= server
->nfs_client
->cl_mvops
->find_root_sec(server
,
3541 status
= nfs4_server_capabilities(server
, fhandle
);
3543 status
= nfs4_do_fsinfo(server
, fhandle
, info
);
3545 return nfs4_map_errors(status
);
3548 static int nfs4_proc_get_root(struct nfs_server
*server
, struct nfs_fh
*mntfh
,
3549 struct nfs_fsinfo
*info
)
3552 struct nfs_fattr
*fattr
= info
->fattr
;
3553 struct nfs4_label
*label
= NULL
;
3555 error
= nfs4_server_capabilities(server
, mntfh
);
3557 dprintk("nfs4_get_root: getcaps error = %d\n", -error
);
3561 label
= nfs4_label_alloc(server
, GFP_KERNEL
);
3563 return PTR_ERR(label
);
3565 error
= nfs4_proc_getattr(server
, mntfh
, fattr
, label
);
3567 dprintk("nfs4_get_root: getattr error = %d\n", -error
);
3568 goto err_free_label
;
3571 if (fattr
->valid
& NFS_ATTR_FATTR_FSID
&&
3572 !nfs_fsid_equal(&server
->fsid
, &fattr
->fsid
))
3573 memcpy(&server
->fsid
, &fattr
->fsid
, sizeof(server
->fsid
));
3576 nfs4_label_free(label
);
3582 * Get locations and (maybe) other attributes of a referral.
3583 * Note that we'll actually follow the referral later when
3584 * we detect fsid mismatch in inode revalidation
3586 static int nfs4_get_referral(struct rpc_clnt
*client
, struct inode
*dir
,
3587 const struct qstr
*name
, struct nfs_fattr
*fattr
,
3588 struct nfs_fh
*fhandle
)
3590 int status
= -ENOMEM
;
3591 struct page
*page
= NULL
;
3592 struct nfs4_fs_locations
*locations
= NULL
;
3594 page
= alloc_page(GFP_KERNEL
);
3597 locations
= kmalloc(sizeof(struct nfs4_fs_locations
), GFP_KERNEL
);
3598 if (locations
== NULL
)
3601 status
= nfs4_proc_fs_locations(client
, dir
, name
, locations
, page
);
3606 * If the fsid didn't change, this is a migration event, not a
3607 * referral. Cause us to drop into the exception handler, which
3608 * will kick off migration recovery.
3610 if (nfs_fsid_equal(&NFS_SERVER(dir
)->fsid
, &locations
->fattr
.fsid
)) {
3611 dprintk("%s: server did not return a different fsid for"
3612 " a referral at %s\n", __func__
, name
->name
);
3613 status
= -NFS4ERR_MOVED
;
3616 /* Fixup attributes for the nfs_lookup() call to nfs_fhget() */
3617 nfs_fixup_referral_attributes(&locations
->fattr
);
3619 /* replace the lookup nfs_fattr with the locations nfs_fattr */
3620 memcpy(fattr
, &locations
->fattr
, sizeof(struct nfs_fattr
));
3621 memset(fhandle
, 0, sizeof(struct nfs_fh
));
3629 static int _nfs4_proc_getattr(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
3630 struct nfs_fattr
*fattr
, struct nfs4_label
*label
)
3632 struct nfs4_getattr_arg args
= {
3634 .bitmask
= server
->attr_bitmask
,
3636 struct nfs4_getattr_res res
= {
3641 struct rpc_message msg
= {
3642 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GETATTR
],
3647 args
.bitmask
= nfs4_bitmask(server
, label
);
3649 nfs_fattr_init(fattr
);
3650 return nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
3653 static int nfs4_proc_getattr(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
3654 struct nfs_fattr
*fattr
, struct nfs4_label
*label
)
3656 struct nfs4_exception exception
= { };
3659 err
= _nfs4_proc_getattr(server
, fhandle
, fattr
, label
);
3660 trace_nfs4_getattr(server
, fhandle
, fattr
, err
);
3661 err
= nfs4_handle_exception(server
, err
,
3663 } while (exception
.retry
);
3668 * The file is not closed if it is opened due to the a request to change
3669 * the size of the file. The open call will not be needed once the
3670 * VFS layer lookup-intents are implemented.
3672 * Close is called when the inode is destroyed.
3673 * If we haven't opened the file for O_WRONLY, we
3674 * need to in the size_change case to obtain a stateid.
3677 * Because OPEN is always done by name in nfsv4, it is
3678 * possible that we opened a different file by the same
3679 * name. We can recognize this race condition, but we
3680 * can't do anything about it besides returning an error.
3682 * This will be fixed with VFS changes (lookup-intent).
3685 nfs4_proc_setattr(struct dentry
*dentry
, struct nfs_fattr
*fattr
,
3686 struct iattr
*sattr
)
3688 struct inode
*inode
= d_inode(dentry
);
3689 struct rpc_cred
*cred
= NULL
;
3690 struct nfs4_state
*state
= NULL
;
3691 struct nfs4_label
*label
= NULL
;
3694 if (pnfs_ld_layoutret_on_setattr(inode
) &&
3695 sattr
->ia_valid
& ATTR_SIZE
&&
3696 sattr
->ia_size
< i_size_read(inode
))
3697 pnfs_commit_and_return_layout(inode
);
3699 nfs_fattr_init(fattr
);
3701 /* Deal with open(O_TRUNC) */
3702 if (sattr
->ia_valid
& ATTR_OPEN
)
3703 sattr
->ia_valid
&= ~(ATTR_MTIME
|ATTR_CTIME
);
3705 /* Optimization: if the end result is no change, don't RPC */
3706 if ((sattr
->ia_valid
& ~(ATTR_FILE
|ATTR_OPEN
)) == 0)
3709 /* Search for an existing open(O_WRITE) file */
3710 if (sattr
->ia_valid
& ATTR_FILE
) {
3711 struct nfs_open_context
*ctx
;
3713 ctx
= nfs_file_open_context(sattr
->ia_file
);
3720 label
= nfs4_label_alloc(NFS_SERVER(inode
), GFP_KERNEL
);
3722 return PTR_ERR(label
);
3724 status
= nfs4_do_setattr(inode
, cred
, fattr
, sattr
, state
, NULL
, label
);
3726 nfs_setattr_update_inode(inode
, sattr
, fattr
);
3727 nfs_setsecurity(inode
, fattr
, label
);
3729 nfs4_label_free(label
);
3733 static int _nfs4_proc_lookup(struct rpc_clnt
*clnt
, struct inode
*dir
,
3734 const struct qstr
*name
, struct nfs_fh
*fhandle
,
3735 struct nfs_fattr
*fattr
, struct nfs4_label
*label
)
3737 struct nfs_server
*server
= NFS_SERVER(dir
);
3739 struct nfs4_lookup_arg args
= {
3740 .bitmask
= server
->attr_bitmask
,
3741 .dir_fh
= NFS_FH(dir
),
3744 struct nfs4_lookup_res res
= {
3750 struct rpc_message msg
= {
3751 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOOKUP
],
3756 args
.bitmask
= nfs4_bitmask(server
, label
);
3758 nfs_fattr_init(fattr
);
3760 dprintk("NFS call lookup %s\n", name
->name
);
3761 status
= nfs4_call_sync(clnt
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
3762 dprintk("NFS reply lookup: %d\n", status
);
3766 static void nfs_fixup_secinfo_attributes(struct nfs_fattr
*fattr
)
3768 fattr
->valid
|= NFS_ATTR_FATTR_TYPE
| NFS_ATTR_FATTR_MODE
|
3769 NFS_ATTR_FATTR_NLINK
| NFS_ATTR_FATTR_MOUNTPOINT
;
3770 fattr
->mode
= S_IFDIR
| S_IRUGO
| S_IXUGO
;
3774 static int nfs4_proc_lookup_common(struct rpc_clnt
**clnt
, struct inode
*dir
,
3775 const struct qstr
*name
, struct nfs_fh
*fhandle
,
3776 struct nfs_fattr
*fattr
, struct nfs4_label
*label
)
3778 struct nfs4_exception exception
= { };
3779 struct rpc_clnt
*client
= *clnt
;
3782 err
= _nfs4_proc_lookup(client
, dir
, name
, fhandle
, fattr
, label
);
3783 trace_nfs4_lookup(dir
, name
, err
);
3785 case -NFS4ERR_BADNAME
:
3788 case -NFS4ERR_MOVED
:
3789 err
= nfs4_get_referral(client
, dir
, name
, fattr
, fhandle
);
3790 if (err
== -NFS4ERR_MOVED
)
3791 err
= nfs4_handle_exception(NFS_SERVER(dir
), err
, &exception
);
3793 case -NFS4ERR_WRONGSEC
:
3795 if (client
!= *clnt
)
3797 client
= nfs4_negotiate_security(client
, dir
, name
);
3799 return PTR_ERR(client
);
3801 exception
.retry
= 1;
3804 err
= nfs4_handle_exception(NFS_SERVER(dir
), err
, &exception
);
3806 } while (exception
.retry
);
3811 else if (client
!= *clnt
)
3812 rpc_shutdown_client(client
);
3817 static int nfs4_proc_lookup(struct inode
*dir
, const struct qstr
*name
,
3818 struct nfs_fh
*fhandle
, struct nfs_fattr
*fattr
,
3819 struct nfs4_label
*label
)
3822 struct rpc_clnt
*client
= NFS_CLIENT(dir
);
3824 status
= nfs4_proc_lookup_common(&client
, dir
, name
, fhandle
, fattr
, label
);
3825 if (client
!= NFS_CLIENT(dir
)) {
3826 rpc_shutdown_client(client
);
3827 nfs_fixup_secinfo_attributes(fattr
);
3833 nfs4_proc_lookup_mountpoint(struct inode
*dir
, const struct qstr
*name
,
3834 struct nfs_fh
*fhandle
, struct nfs_fattr
*fattr
)
3836 struct rpc_clnt
*client
= NFS_CLIENT(dir
);
3839 status
= nfs4_proc_lookup_common(&client
, dir
, name
, fhandle
, fattr
, NULL
);
3841 return ERR_PTR(status
);
3842 return (client
== NFS_CLIENT(dir
)) ? rpc_clone_client(client
) : client
;
3845 static int _nfs4_proc_access(struct inode
*inode
, struct nfs_access_entry
*entry
)
3847 struct nfs_server
*server
= NFS_SERVER(inode
);
3848 struct nfs4_accessargs args
= {
3849 .fh
= NFS_FH(inode
),
3850 .bitmask
= server
->cache_consistency_bitmask
,
3852 struct nfs4_accessres res
= {
3855 struct rpc_message msg
= {
3856 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_ACCESS
],
3859 .rpc_cred
= entry
->cred
,
3861 int mode
= entry
->mask
;
3865 * Determine which access bits we want to ask for...
3867 if (mode
& MAY_READ
)
3868 args
.access
|= NFS4_ACCESS_READ
;
3869 if (S_ISDIR(inode
->i_mode
)) {
3870 if (mode
& MAY_WRITE
)
3871 args
.access
|= NFS4_ACCESS_MODIFY
| NFS4_ACCESS_EXTEND
| NFS4_ACCESS_DELETE
;
3872 if (mode
& MAY_EXEC
)
3873 args
.access
|= NFS4_ACCESS_LOOKUP
;
3875 if (mode
& MAY_WRITE
)
3876 args
.access
|= NFS4_ACCESS_MODIFY
| NFS4_ACCESS_EXTEND
;
3877 if (mode
& MAY_EXEC
)
3878 args
.access
|= NFS4_ACCESS_EXECUTE
;
3881 res
.fattr
= nfs_alloc_fattr();
3882 if (res
.fattr
== NULL
)
3885 status
= nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
3887 nfs_access_set_mask(entry
, res
.access
);
3888 nfs_refresh_inode(inode
, res
.fattr
);
3890 nfs_free_fattr(res
.fattr
);
3894 static int nfs4_proc_access(struct inode
*inode
, struct nfs_access_entry
*entry
)
3896 struct nfs4_exception exception
= { };
3899 err
= _nfs4_proc_access(inode
, entry
);
3900 trace_nfs4_access(inode
, err
);
3901 err
= nfs4_handle_exception(NFS_SERVER(inode
), err
,
3903 } while (exception
.retry
);
3908 * TODO: For the time being, we don't try to get any attributes
3909 * along with any of the zero-copy operations READ, READDIR,
3912 * In the case of the first three, we want to put the GETATTR
3913 * after the read-type operation -- this is because it is hard
3914 * to predict the length of a GETATTR response in v4, and thus
3915 * align the READ data correctly. This means that the GETATTR
3916 * may end up partially falling into the page cache, and we should
3917 * shift it into the 'tail' of the xdr_buf before processing.
3918 * To do this efficiently, we need to know the total length
3919 * of data received, which doesn't seem to be available outside
3922 * In the case of WRITE, we also want to put the GETATTR after
3923 * the operation -- in this case because we want to make sure
3924 * we get the post-operation mtime and size.
3926 * Both of these changes to the XDR layer would in fact be quite
3927 * minor, but I decided to leave them for a subsequent patch.
3929 static int _nfs4_proc_readlink(struct inode
*inode
, struct page
*page
,
3930 unsigned int pgbase
, unsigned int pglen
)
3932 struct nfs4_readlink args
= {
3933 .fh
= NFS_FH(inode
),
3938 struct nfs4_readlink_res res
;
3939 struct rpc_message msg
= {
3940 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_READLINK
],
3945 return nfs4_call_sync(NFS_SERVER(inode
)->client
, NFS_SERVER(inode
), &msg
, &args
.seq_args
, &res
.seq_res
, 0);
3948 static int nfs4_proc_readlink(struct inode
*inode
, struct page
*page
,
3949 unsigned int pgbase
, unsigned int pglen
)
3951 struct nfs4_exception exception
= { };
3954 err
= _nfs4_proc_readlink(inode
, page
, pgbase
, pglen
);
3955 trace_nfs4_readlink(inode
, err
);
3956 err
= nfs4_handle_exception(NFS_SERVER(inode
), err
,
3958 } while (exception
.retry
);
3963 * This is just for mknod. open(O_CREAT) will always do ->open_context().
3966 nfs4_proc_create(struct inode
*dir
, struct dentry
*dentry
, struct iattr
*sattr
,
3969 struct nfs4_label l
, *ilabel
= NULL
;
3970 struct nfs_open_context
*ctx
;
3971 struct nfs4_state
*state
;
3974 ctx
= alloc_nfs_open_context(dentry
, FMODE_READ
);
3976 return PTR_ERR(ctx
);
3978 ilabel
= nfs4_label_init_security(dir
, dentry
, sattr
, &l
);
3980 sattr
->ia_mode
&= ~current_umask();
3981 state
= nfs4_do_open(dir
, ctx
, flags
, sattr
, ilabel
, NULL
);
3982 if (IS_ERR(state
)) {
3983 status
= PTR_ERR(state
);
3987 nfs4_label_release_security(ilabel
);
3988 put_nfs_open_context(ctx
);
3992 static int _nfs4_proc_remove(struct inode
*dir
, const struct qstr
*name
)
3994 struct nfs_server
*server
= NFS_SERVER(dir
);
3995 struct nfs_removeargs args
= {
3999 struct nfs_removeres res
= {
4002 struct rpc_message msg
= {
4003 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_REMOVE
],
4009 status
= nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 1);
4011 update_changeattr(dir
, &res
.cinfo
);
4015 static int nfs4_proc_remove(struct inode
*dir
, const struct qstr
*name
)
4017 struct nfs4_exception exception
= { };
4020 err
= _nfs4_proc_remove(dir
, name
);
4021 trace_nfs4_remove(dir
, name
, err
);
4022 err
= nfs4_handle_exception(NFS_SERVER(dir
), err
,
4024 } while (exception
.retry
);
4028 static void nfs4_proc_unlink_setup(struct rpc_message
*msg
, struct inode
*dir
)
4030 struct nfs_server
*server
= NFS_SERVER(dir
);
4031 struct nfs_removeargs
*args
= msg
->rpc_argp
;
4032 struct nfs_removeres
*res
= msg
->rpc_resp
;
4034 res
->server
= server
;
4035 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_REMOVE
];
4036 nfs4_init_sequence(&args
->seq_args
, &res
->seq_res
, 1);
4038 nfs_fattr_init(res
->dir_attr
);
4041 static void nfs4_proc_unlink_rpc_prepare(struct rpc_task
*task
, struct nfs_unlinkdata
*data
)
4043 nfs4_setup_sequence(NFS_SB(data
->dentry
->d_sb
),
4044 &data
->args
.seq_args
,
4049 static int nfs4_proc_unlink_done(struct rpc_task
*task
, struct inode
*dir
)
4051 struct nfs_unlinkdata
*data
= task
->tk_calldata
;
4052 struct nfs_removeres
*res
= &data
->res
;
4054 if (!nfs4_sequence_done(task
, &res
->seq_res
))
4056 if (nfs4_async_handle_error(task
, res
->server
, NULL
,
4057 &data
->timeout
) == -EAGAIN
)
4059 update_changeattr(dir
, &res
->cinfo
);
4063 static void nfs4_proc_rename_setup(struct rpc_message
*msg
, struct inode
*dir
)
4065 struct nfs_server
*server
= NFS_SERVER(dir
);
4066 struct nfs_renameargs
*arg
= msg
->rpc_argp
;
4067 struct nfs_renameres
*res
= msg
->rpc_resp
;
4069 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RENAME
];
4070 res
->server
= server
;
4071 nfs4_init_sequence(&arg
->seq_args
, &res
->seq_res
, 1);
4074 static void nfs4_proc_rename_rpc_prepare(struct rpc_task
*task
, struct nfs_renamedata
*data
)
4076 nfs4_setup_sequence(NFS_SERVER(data
->old_dir
),
4077 &data
->args
.seq_args
,
4082 static int nfs4_proc_rename_done(struct rpc_task
*task
, struct inode
*old_dir
,
4083 struct inode
*new_dir
)
4085 struct nfs_renamedata
*data
= task
->tk_calldata
;
4086 struct nfs_renameres
*res
= &data
->res
;
4088 if (!nfs4_sequence_done(task
, &res
->seq_res
))
4090 if (nfs4_async_handle_error(task
, res
->server
, NULL
, &data
->timeout
) == -EAGAIN
)
4093 update_changeattr(old_dir
, &res
->old_cinfo
);
4094 update_changeattr(new_dir
, &res
->new_cinfo
);
4098 static int _nfs4_proc_link(struct inode
*inode
, struct inode
*dir
, const struct qstr
*name
)
4100 struct nfs_server
*server
= NFS_SERVER(inode
);
4101 struct nfs4_link_arg arg
= {
4102 .fh
= NFS_FH(inode
),
4103 .dir_fh
= NFS_FH(dir
),
4105 .bitmask
= server
->attr_bitmask
,
4107 struct nfs4_link_res res
= {
4111 struct rpc_message msg
= {
4112 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LINK
],
4116 int status
= -ENOMEM
;
4118 res
.fattr
= nfs_alloc_fattr();
4119 if (res
.fattr
== NULL
)
4122 res
.label
= nfs4_label_alloc(server
, GFP_KERNEL
);
4123 if (IS_ERR(res
.label
)) {
4124 status
= PTR_ERR(res
.label
);
4127 arg
.bitmask
= nfs4_bitmask(server
, res
.label
);
4129 status
= nfs4_call_sync(server
->client
, server
, &msg
, &arg
.seq_args
, &res
.seq_res
, 1);
4131 update_changeattr(dir
, &res
.cinfo
);
4132 status
= nfs_post_op_update_inode(inode
, res
.fattr
);
4134 nfs_setsecurity(inode
, res
.fattr
, res
.label
);
4138 nfs4_label_free(res
.label
);
4141 nfs_free_fattr(res
.fattr
);
4145 static int nfs4_proc_link(struct inode
*inode
, struct inode
*dir
, const struct qstr
*name
)
4147 struct nfs4_exception exception
= { };
4150 err
= nfs4_handle_exception(NFS_SERVER(inode
),
4151 _nfs4_proc_link(inode
, dir
, name
),
4153 } while (exception
.retry
);
4157 struct nfs4_createdata
{
4158 struct rpc_message msg
;
4159 struct nfs4_create_arg arg
;
4160 struct nfs4_create_res res
;
4162 struct nfs_fattr fattr
;
4163 struct nfs4_label
*label
;
4166 static struct nfs4_createdata
*nfs4_alloc_createdata(struct inode
*dir
,
4167 const struct qstr
*name
, struct iattr
*sattr
, u32 ftype
)
4169 struct nfs4_createdata
*data
;
4171 data
= kzalloc(sizeof(*data
), GFP_KERNEL
);
4173 struct nfs_server
*server
= NFS_SERVER(dir
);
4175 data
->label
= nfs4_label_alloc(server
, GFP_KERNEL
);
4176 if (IS_ERR(data
->label
))
4179 data
->msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_CREATE
];
4180 data
->msg
.rpc_argp
= &data
->arg
;
4181 data
->msg
.rpc_resp
= &data
->res
;
4182 data
->arg
.dir_fh
= NFS_FH(dir
);
4183 data
->arg
.server
= server
;
4184 data
->arg
.name
= name
;
4185 data
->arg
.attrs
= sattr
;
4186 data
->arg
.ftype
= ftype
;
4187 data
->arg
.bitmask
= nfs4_bitmask(server
, data
->label
);
4188 data
->res
.server
= server
;
4189 data
->res
.fh
= &data
->fh
;
4190 data
->res
.fattr
= &data
->fattr
;
4191 data
->res
.label
= data
->label
;
4192 nfs_fattr_init(data
->res
.fattr
);
4200 static int nfs4_do_create(struct inode
*dir
, struct dentry
*dentry
, struct nfs4_createdata
*data
)
4202 int status
= nfs4_call_sync(NFS_SERVER(dir
)->client
, NFS_SERVER(dir
), &data
->msg
,
4203 &data
->arg
.seq_args
, &data
->res
.seq_res
, 1);
4205 update_changeattr(dir
, &data
->res
.dir_cinfo
);
4206 status
= nfs_instantiate(dentry
, data
->res
.fh
, data
->res
.fattr
, data
->res
.label
);
4211 static void nfs4_free_createdata(struct nfs4_createdata
*data
)
4213 nfs4_label_free(data
->label
);
4217 static int _nfs4_proc_symlink(struct inode
*dir
, struct dentry
*dentry
,
4218 struct page
*page
, unsigned int len
, struct iattr
*sattr
,
4219 struct nfs4_label
*label
)
4221 struct nfs4_createdata
*data
;
4222 int status
= -ENAMETOOLONG
;
4224 if (len
> NFS4_MAXPATHLEN
)
4228 data
= nfs4_alloc_createdata(dir
, &dentry
->d_name
, sattr
, NF4LNK
);
4232 data
->msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SYMLINK
];
4233 data
->arg
.u
.symlink
.pages
= &page
;
4234 data
->arg
.u
.symlink
.len
= len
;
4235 data
->arg
.label
= label
;
4237 status
= nfs4_do_create(dir
, dentry
, data
);
4239 nfs4_free_createdata(data
);
4244 static int nfs4_proc_symlink(struct inode
*dir
, struct dentry
*dentry
,
4245 struct page
*page
, unsigned int len
, struct iattr
*sattr
)
4247 struct nfs4_exception exception
= { };
4248 struct nfs4_label l
, *label
= NULL
;
4251 label
= nfs4_label_init_security(dir
, dentry
, sattr
, &l
);
4254 err
= _nfs4_proc_symlink(dir
, dentry
, page
, len
, sattr
, label
);
4255 trace_nfs4_symlink(dir
, &dentry
->d_name
, err
);
4256 err
= nfs4_handle_exception(NFS_SERVER(dir
), err
,
4258 } while (exception
.retry
);
4260 nfs4_label_release_security(label
);
4264 static int _nfs4_proc_mkdir(struct inode
*dir
, struct dentry
*dentry
,
4265 struct iattr
*sattr
, struct nfs4_label
*label
)
4267 struct nfs4_createdata
*data
;
4268 int status
= -ENOMEM
;
4270 data
= nfs4_alloc_createdata(dir
, &dentry
->d_name
, sattr
, NF4DIR
);
4274 data
->arg
.label
= label
;
4275 status
= nfs4_do_create(dir
, dentry
, data
);
4277 nfs4_free_createdata(data
);
4282 static int nfs4_proc_mkdir(struct inode
*dir
, struct dentry
*dentry
,
4283 struct iattr
*sattr
)
4285 struct nfs4_exception exception
= { };
4286 struct nfs4_label l
, *label
= NULL
;
4289 label
= nfs4_label_init_security(dir
, dentry
, sattr
, &l
);
4291 sattr
->ia_mode
&= ~current_umask();
4293 err
= _nfs4_proc_mkdir(dir
, dentry
, sattr
, label
);
4294 trace_nfs4_mkdir(dir
, &dentry
->d_name
, err
);
4295 err
= nfs4_handle_exception(NFS_SERVER(dir
), err
,
4297 } while (exception
.retry
);
4298 nfs4_label_release_security(label
);
4303 static int _nfs4_proc_readdir(struct dentry
*dentry
, struct rpc_cred
*cred
,
4304 u64 cookie
, struct page
**pages
, unsigned int count
, int plus
)
4306 struct inode
*dir
= d_inode(dentry
);
4307 struct nfs4_readdir_arg args
= {
4312 .bitmask
= NFS_SERVER(d_inode(dentry
))->attr_bitmask
,
4315 struct nfs4_readdir_res res
;
4316 struct rpc_message msg
= {
4317 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_READDIR
],
4324 dprintk("%s: dentry = %pd2, cookie = %Lu\n", __func__
,
4326 (unsigned long long)cookie
);
4327 nfs4_setup_readdir(cookie
, NFS_I(dir
)->cookieverf
, dentry
, &args
);
4328 res
.pgbase
= args
.pgbase
;
4329 status
= nfs4_call_sync(NFS_SERVER(dir
)->client
, NFS_SERVER(dir
), &msg
, &args
.seq_args
, &res
.seq_res
, 0);
4331 memcpy(NFS_I(dir
)->cookieverf
, res
.verifier
.data
, NFS4_VERIFIER_SIZE
);
4332 status
+= args
.pgbase
;
4335 nfs_invalidate_atime(dir
);
4337 dprintk("%s: returns %d\n", __func__
, status
);
4341 static int nfs4_proc_readdir(struct dentry
*dentry
, struct rpc_cred
*cred
,
4342 u64 cookie
, struct page
**pages
, unsigned int count
, int plus
)
4344 struct nfs4_exception exception
= { };
4347 err
= _nfs4_proc_readdir(dentry
, cred
, cookie
,
4348 pages
, count
, plus
);
4349 trace_nfs4_readdir(d_inode(dentry
), err
);
4350 err
= nfs4_handle_exception(NFS_SERVER(d_inode(dentry
)), err
,
4352 } while (exception
.retry
);
4356 static int _nfs4_proc_mknod(struct inode
*dir
, struct dentry
*dentry
,
4357 struct iattr
*sattr
, struct nfs4_label
*label
, dev_t rdev
)
4359 struct nfs4_createdata
*data
;
4360 int mode
= sattr
->ia_mode
;
4361 int status
= -ENOMEM
;
4363 data
= nfs4_alloc_createdata(dir
, &dentry
->d_name
, sattr
, NF4SOCK
);
4368 data
->arg
.ftype
= NF4FIFO
;
4369 else if (S_ISBLK(mode
)) {
4370 data
->arg
.ftype
= NF4BLK
;
4371 data
->arg
.u
.device
.specdata1
= MAJOR(rdev
);
4372 data
->arg
.u
.device
.specdata2
= MINOR(rdev
);
4374 else if (S_ISCHR(mode
)) {
4375 data
->arg
.ftype
= NF4CHR
;
4376 data
->arg
.u
.device
.specdata1
= MAJOR(rdev
);
4377 data
->arg
.u
.device
.specdata2
= MINOR(rdev
);
4378 } else if (!S_ISSOCK(mode
)) {
4383 data
->arg
.label
= label
;
4384 status
= nfs4_do_create(dir
, dentry
, data
);
4386 nfs4_free_createdata(data
);
4391 static int nfs4_proc_mknod(struct inode
*dir
, struct dentry
*dentry
,
4392 struct iattr
*sattr
, dev_t rdev
)
4394 struct nfs4_exception exception
= { };
4395 struct nfs4_label l
, *label
= NULL
;
4398 label
= nfs4_label_init_security(dir
, dentry
, sattr
, &l
);
4400 sattr
->ia_mode
&= ~current_umask();
4402 err
= _nfs4_proc_mknod(dir
, dentry
, sattr
, label
, rdev
);
4403 trace_nfs4_mknod(dir
, &dentry
->d_name
, err
);
4404 err
= nfs4_handle_exception(NFS_SERVER(dir
), err
,
4406 } while (exception
.retry
);
4408 nfs4_label_release_security(label
);
4413 static int _nfs4_proc_statfs(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
4414 struct nfs_fsstat
*fsstat
)
4416 struct nfs4_statfs_arg args
= {
4418 .bitmask
= server
->attr_bitmask
,
4420 struct nfs4_statfs_res res
= {
4423 struct rpc_message msg
= {
4424 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_STATFS
],
4429 nfs_fattr_init(fsstat
->fattr
);
4430 return nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
4433 static int nfs4_proc_statfs(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fsstat
*fsstat
)
4435 struct nfs4_exception exception
= { };
4438 err
= nfs4_handle_exception(server
,
4439 _nfs4_proc_statfs(server
, fhandle
, fsstat
),
4441 } while (exception
.retry
);
4445 static int _nfs4_do_fsinfo(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
4446 struct nfs_fsinfo
*fsinfo
)
4448 struct nfs4_fsinfo_arg args
= {
4450 .bitmask
= server
->attr_bitmask
,
4452 struct nfs4_fsinfo_res res
= {
4455 struct rpc_message msg
= {
4456 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_FSINFO
],
4461 return nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
4464 static int nfs4_do_fsinfo(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fsinfo
*fsinfo
)
4466 struct nfs4_exception exception
= { };
4467 unsigned long now
= jiffies
;
4471 err
= _nfs4_do_fsinfo(server
, fhandle
, fsinfo
);
4472 trace_nfs4_fsinfo(server
, fhandle
, fsinfo
->fattr
, err
);
4474 nfs4_set_lease_period(server
->nfs_client
,
4475 fsinfo
->lease_time
* HZ
,
4479 err
= nfs4_handle_exception(server
, err
, &exception
);
4480 } while (exception
.retry
);
4484 static int nfs4_proc_fsinfo(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fsinfo
*fsinfo
)
4488 nfs_fattr_init(fsinfo
->fattr
);
4489 error
= nfs4_do_fsinfo(server
, fhandle
, fsinfo
);
4491 /* block layout checks this! */
4492 server
->pnfs_blksize
= fsinfo
->blksize
;
4493 set_pnfs_layoutdriver(server
, fhandle
, fsinfo
);
4499 static int _nfs4_proc_pathconf(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
4500 struct nfs_pathconf
*pathconf
)
4502 struct nfs4_pathconf_arg args
= {
4504 .bitmask
= server
->attr_bitmask
,
4506 struct nfs4_pathconf_res res
= {
4507 .pathconf
= pathconf
,
4509 struct rpc_message msg
= {
4510 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_PATHCONF
],
4515 /* None of the pathconf attributes are mandatory to implement */
4516 if ((args
.bitmask
[0] & nfs4_pathconf_bitmap
[0]) == 0) {
4517 memset(pathconf
, 0, sizeof(*pathconf
));
4521 nfs_fattr_init(pathconf
->fattr
);
4522 return nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
4525 static int nfs4_proc_pathconf(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
4526 struct nfs_pathconf
*pathconf
)
4528 struct nfs4_exception exception
= { };
4532 err
= nfs4_handle_exception(server
,
4533 _nfs4_proc_pathconf(server
, fhandle
, pathconf
),
4535 } while (exception
.retry
);
4539 int nfs4_set_rw_stateid(nfs4_stateid
*stateid
,
4540 const struct nfs_open_context
*ctx
,
4541 const struct nfs_lock_context
*l_ctx
,
4544 const struct nfs_lockowner
*lockowner
= NULL
;
4547 lockowner
= &l_ctx
->lockowner
;
4548 return nfs4_select_rw_stateid(ctx
->state
, fmode
, lockowner
, stateid
, NULL
);
4550 EXPORT_SYMBOL_GPL(nfs4_set_rw_stateid
);
4552 static bool nfs4_stateid_is_current(nfs4_stateid
*stateid
,
4553 const struct nfs_open_context
*ctx
,
4554 const struct nfs_lock_context
*l_ctx
,
4557 nfs4_stateid current_stateid
;
4559 /* If the current stateid represents a lost lock, then exit */
4560 if (nfs4_set_rw_stateid(¤t_stateid
, ctx
, l_ctx
, fmode
) == -EIO
)
4562 return nfs4_stateid_match(stateid
, ¤t_stateid
);
4565 static bool nfs4_error_stateid_expired(int err
)
4568 case -NFS4ERR_DELEG_REVOKED
:
4569 case -NFS4ERR_ADMIN_REVOKED
:
4570 case -NFS4ERR_BAD_STATEID
:
4571 case -NFS4ERR_STALE_STATEID
:
4572 case -NFS4ERR_OLD_STATEID
:
4573 case -NFS4ERR_OPENMODE
:
4574 case -NFS4ERR_EXPIRED
:
4580 static int nfs4_read_done_cb(struct rpc_task
*task
, struct nfs_pgio_header
*hdr
)
4582 struct nfs_server
*server
= NFS_SERVER(hdr
->inode
);
4584 trace_nfs4_read(hdr
, task
->tk_status
);
4585 if (task
->tk_status
< 0) {
4586 struct nfs4_exception exception
= {
4587 .inode
= hdr
->inode
,
4588 .state
= hdr
->args
.context
->state
,
4589 .stateid
= &hdr
->args
.stateid
,
4591 task
->tk_status
= nfs4_async_handle_exception(task
,
4592 server
, task
->tk_status
, &exception
);
4593 if (exception
.retry
) {
4594 rpc_restart_call_prepare(task
);
4599 if (task
->tk_status
> 0)
4600 renew_lease(server
, hdr
->timestamp
);
4604 static bool nfs4_read_stateid_changed(struct rpc_task
*task
,
4605 struct nfs_pgio_args
*args
)
4608 if (!nfs4_error_stateid_expired(task
->tk_status
) ||
4609 nfs4_stateid_is_current(&args
->stateid
,
4614 rpc_restart_call_prepare(task
);
4618 static int nfs4_read_done(struct rpc_task
*task
, struct nfs_pgio_header
*hdr
)
4621 dprintk("--> %s\n", __func__
);
4623 if (!nfs4_sequence_done(task
, &hdr
->res
.seq_res
))
4625 if (nfs4_read_stateid_changed(task
, &hdr
->args
))
4627 if (task
->tk_status
> 0)
4628 nfs_invalidate_atime(hdr
->inode
);
4629 return hdr
->pgio_done_cb
? hdr
->pgio_done_cb(task
, hdr
) :
4630 nfs4_read_done_cb(task
, hdr
);
4633 static void nfs4_proc_read_setup(struct nfs_pgio_header
*hdr
,
4634 struct rpc_message
*msg
)
4636 hdr
->timestamp
= jiffies
;
4637 if (!hdr
->pgio_done_cb
)
4638 hdr
->pgio_done_cb
= nfs4_read_done_cb
;
4639 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_READ
];
4640 nfs4_init_sequence(&hdr
->args
.seq_args
, &hdr
->res
.seq_res
, 0);
4643 static int nfs4_proc_pgio_rpc_prepare(struct rpc_task
*task
,
4644 struct nfs_pgio_header
*hdr
)
4646 if (nfs4_setup_sequence(NFS_SERVER(hdr
->inode
),
4647 &hdr
->args
.seq_args
,
4651 if (nfs4_set_rw_stateid(&hdr
->args
.stateid
, hdr
->args
.context
,
4652 hdr
->args
.lock_context
,
4653 hdr
->rw_ops
->rw_mode
) == -EIO
)
4655 if (unlikely(test_bit(NFS_CONTEXT_BAD
, &hdr
->args
.context
->flags
)))
4660 static int nfs4_write_done_cb(struct rpc_task
*task
,
4661 struct nfs_pgio_header
*hdr
)
4663 struct inode
*inode
= hdr
->inode
;
4665 trace_nfs4_write(hdr
, task
->tk_status
);
4666 if (task
->tk_status
< 0) {
4667 struct nfs4_exception exception
= {
4668 .inode
= hdr
->inode
,
4669 .state
= hdr
->args
.context
->state
,
4670 .stateid
= &hdr
->args
.stateid
,
4672 task
->tk_status
= nfs4_async_handle_exception(task
,
4673 NFS_SERVER(inode
), task
->tk_status
,
4675 if (exception
.retry
) {
4676 rpc_restart_call_prepare(task
);
4680 if (task
->tk_status
>= 0) {
4681 renew_lease(NFS_SERVER(inode
), hdr
->timestamp
);
4682 nfs_writeback_update_inode(hdr
);
4687 static bool nfs4_write_stateid_changed(struct rpc_task
*task
,
4688 struct nfs_pgio_args
*args
)
4691 if (!nfs4_error_stateid_expired(task
->tk_status
) ||
4692 nfs4_stateid_is_current(&args
->stateid
,
4697 rpc_restart_call_prepare(task
);
4701 static int nfs4_write_done(struct rpc_task
*task
, struct nfs_pgio_header
*hdr
)
4703 if (!nfs4_sequence_done(task
, &hdr
->res
.seq_res
))
4705 if (nfs4_write_stateid_changed(task
, &hdr
->args
))
4707 return hdr
->pgio_done_cb
? hdr
->pgio_done_cb(task
, hdr
) :
4708 nfs4_write_done_cb(task
, hdr
);
4712 bool nfs4_write_need_cache_consistency_data(struct nfs_pgio_header
*hdr
)
4714 /* Don't request attributes for pNFS or O_DIRECT writes */
4715 if (hdr
->ds_clp
!= NULL
|| hdr
->dreq
!= NULL
)
4717 /* Otherwise, request attributes if and only if we don't hold
4720 return nfs4_have_delegation(hdr
->inode
, FMODE_READ
) == 0;
4723 static void nfs4_proc_write_setup(struct nfs_pgio_header
*hdr
,
4724 struct rpc_message
*msg
)
4726 struct nfs_server
*server
= NFS_SERVER(hdr
->inode
);
4728 if (!nfs4_write_need_cache_consistency_data(hdr
)) {
4729 hdr
->args
.bitmask
= NULL
;
4730 hdr
->res
.fattr
= NULL
;
4732 hdr
->args
.bitmask
= server
->cache_consistency_bitmask
;
4734 if (!hdr
->pgio_done_cb
)
4735 hdr
->pgio_done_cb
= nfs4_write_done_cb
;
4736 hdr
->res
.server
= server
;
4737 hdr
->timestamp
= jiffies
;
4739 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_WRITE
];
4740 nfs4_init_sequence(&hdr
->args
.seq_args
, &hdr
->res
.seq_res
, 1);
4743 static void nfs4_proc_commit_rpc_prepare(struct rpc_task
*task
, struct nfs_commit_data
*data
)
4745 nfs4_setup_sequence(NFS_SERVER(data
->inode
),
4746 &data
->args
.seq_args
,
4751 static int nfs4_commit_done_cb(struct rpc_task
*task
, struct nfs_commit_data
*data
)
4753 struct inode
*inode
= data
->inode
;
4755 trace_nfs4_commit(data
, task
->tk_status
);
4756 if (nfs4_async_handle_error(task
, NFS_SERVER(inode
),
4757 NULL
, NULL
) == -EAGAIN
) {
4758 rpc_restart_call_prepare(task
);
4764 static int nfs4_commit_done(struct rpc_task
*task
, struct nfs_commit_data
*data
)
4766 if (!nfs4_sequence_done(task
, &data
->res
.seq_res
))
4768 return data
->commit_done_cb(task
, data
);
4771 static void nfs4_proc_commit_setup(struct nfs_commit_data
*data
, struct rpc_message
*msg
)
4773 struct nfs_server
*server
= NFS_SERVER(data
->inode
);
4775 if (data
->commit_done_cb
== NULL
)
4776 data
->commit_done_cb
= nfs4_commit_done_cb
;
4777 data
->res
.server
= server
;
4778 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_COMMIT
];
4779 nfs4_init_sequence(&data
->args
.seq_args
, &data
->res
.seq_res
, 1);
4782 struct nfs4_renewdata
{
4783 struct nfs_client
*client
;
4784 unsigned long timestamp
;
4788 * nfs4_proc_async_renew(): This is not one of the nfs_rpc_ops; it is a special
4789 * standalone procedure for queueing an asynchronous RENEW.
4791 static void nfs4_renew_release(void *calldata
)
4793 struct nfs4_renewdata
*data
= calldata
;
4794 struct nfs_client
*clp
= data
->client
;
4796 if (atomic_read(&clp
->cl_count
) > 1)
4797 nfs4_schedule_state_renewal(clp
);
4798 nfs_put_client(clp
);
4802 static void nfs4_renew_done(struct rpc_task
*task
, void *calldata
)
4804 struct nfs4_renewdata
*data
= calldata
;
4805 struct nfs_client
*clp
= data
->client
;
4806 unsigned long timestamp
= data
->timestamp
;
4808 trace_nfs4_renew_async(clp
, task
->tk_status
);
4809 switch (task
->tk_status
) {
4812 case -NFS4ERR_LEASE_MOVED
:
4813 nfs4_schedule_lease_moved_recovery(clp
);
4816 /* Unless we're shutting down, schedule state recovery! */
4817 if (test_bit(NFS_CS_RENEWD
, &clp
->cl_res_state
) == 0)
4819 if (task
->tk_status
!= NFS4ERR_CB_PATH_DOWN
) {
4820 nfs4_schedule_lease_recovery(clp
);
4823 nfs4_schedule_path_down_recovery(clp
);
4825 do_renew_lease(clp
, timestamp
);
4828 static const struct rpc_call_ops nfs4_renew_ops
= {
4829 .rpc_call_done
= nfs4_renew_done
,
4830 .rpc_release
= nfs4_renew_release
,
4833 static int nfs4_proc_async_renew(struct nfs_client
*clp
, struct rpc_cred
*cred
, unsigned renew_flags
)
4835 struct rpc_message msg
= {
4836 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RENEW
],
4840 struct nfs4_renewdata
*data
;
4842 if (renew_flags
== 0)
4844 if (!atomic_inc_not_zero(&clp
->cl_count
))
4846 data
= kmalloc(sizeof(*data
), GFP_NOFS
);
4850 data
->timestamp
= jiffies
;
4851 return rpc_call_async(clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
,
4852 &nfs4_renew_ops
, data
);
4855 static int nfs4_proc_renew(struct nfs_client
*clp
, struct rpc_cred
*cred
)
4857 struct rpc_message msg
= {
4858 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RENEW
],
4862 unsigned long now
= jiffies
;
4865 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
4868 do_renew_lease(clp
, now
);
4872 static inline int nfs4_server_supports_acls(struct nfs_server
*server
)
4874 return server
->caps
& NFS_CAP_ACLS
;
4877 /* Assuming that XATTR_SIZE_MAX is a multiple of PAGE_SIZE, and that
4878 * it's OK to put sizeof(void) * (XATTR_SIZE_MAX/PAGE_SIZE) bytes on
4881 #define NFS4ACL_MAXPAGES DIV_ROUND_UP(XATTR_SIZE_MAX, PAGE_SIZE)
4883 static int buf_to_pages_noslab(const void *buf
, size_t buflen
,
4884 struct page
**pages
)
4886 struct page
*newpage
, **spages
;
4892 len
= min_t(size_t, PAGE_SIZE
, buflen
);
4893 newpage
= alloc_page(GFP_KERNEL
);
4895 if (newpage
== NULL
)
4897 memcpy(page_address(newpage
), buf
, len
);
4902 } while (buflen
!= 0);
4908 __free_page(spages
[rc
-1]);
4912 struct nfs4_cached_acl
{
4918 static void nfs4_set_cached_acl(struct inode
*inode
, struct nfs4_cached_acl
*acl
)
4920 struct nfs_inode
*nfsi
= NFS_I(inode
);
4922 spin_lock(&inode
->i_lock
);
4923 kfree(nfsi
->nfs4_acl
);
4924 nfsi
->nfs4_acl
= acl
;
4925 spin_unlock(&inode
->i_lock
);
4928 static void nfs4_zap_acl_attr(struct inode
*inode
)
4930 nfs4_set_cached_acl(inode
, NULL
);
4933 static inline ssize_t
nfs4_read_cached_acl(struct inode
*inode
, char *buf
, size_t buflen
)
4935 struct nfs_inode
*nfsi
= NFS_I(inode
);
4936 struct nfs4_cached_acl
*acl
;
4939 spin_lock(&inode
->i_lock
);
4940 acl
= nfsi
->nfs4_acl
;
4943 if (buf
== NULL
) /* user is just asking for length */
4945 if (acl
->cached
== 0)
4947 ret
= -ERANGE
; /* see getxattr(2) man page */
4948 if (acl
->len
> buflen
)
4950 memcpy(buf
, acl
->data
, acl
->len
);
4954 spin_unlock(&inode
->i_lock
);
4958 static void nfs4_write_cached_acl(struct inode
*inode
, struct page
**pages
, size_t pgbase
, size_t acl_len
)
4960 struct nfs4_cached_acl
*acl
;
4961 size_t buflen
= sizeof(*acl
) + acl_len
;
4963 if (buflen
<= PAGE_SIZE
) {
4964 acl
= kmalloc(buflen
, GFP_KERNEL
);
4968 _copy_from_pages(acl
->data
, pages
, pgbase
, acl_len
);
4970 acl
= kmalloc(sizeof(*acl
), GFP_KERNEL
);
4977 nfs4_set_cached_acl(inode
, acl
);
4981 * The getxattr API returns the required buffer length when called with a
4982 * NULL buf. The NFSv4 acl tool then calls getxattr again after allocating
4983 * the required buf. On a NULL buf, we send a page of data to the server
4984 * guessing that the ACL request can be serviced by a page. If so, we cache
4985 * up to the page of ACL data, and the 2nd call to getxattr is serviced by
4986 * the cache. If not so, we throw away the page, and cache the required
4987 * length. The next getxattr call will then produce another round trip to
4988 * the server, this time with the input buf of the required size.
4990 static ssize_t
__nfs4_get_acl_uncached(struct inode
*inode
, void *buf
, size_t buflen
)
4992 struct page
*pages
[NFS4ACL_MAXPAGES
] = {NULL
, };
4993 struct nfs_getaclargs args
= {
4994 .fh
= NFS_FH(inode
),
4998 struct nfs_getaclres res
= {
5001 struct rpc_message msg
= {
5002 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GETACL
],
5006 unsigned int npages
= DIV_ROUND_UP(buflen
, PAGE_SIZE
);
5007 int ret
= -ENOMEM
, i
;
5009 /* As long as we're doing a round trip to the server anyway,
5010 * let's be prepared for a page of acl data. */
5013 if (npages
> ARRAY_SIZE(pages
))
5016 for (i
= 0; i
< npages
; i
++) {
5017 pages
[i
] = alloc_page(GFP_KERNEL
);
5022 /* for decoding across pages */
5023 res
.acl_scratch
= alloc_page(GFP_KERNEL
);
5024 if (!res
.acl_scratch
)
5027 args
.acl_len
= npages
* PAGE_SIZE
;
5029 dprintk("%s buf %p buflen %zu npages %d args.acl_len %zu\n",
5030 __func__
, buf
, buflen
, npages
, args
.acl_len
);
5031 ret
= nfs4_call_sync(NFS_SERVER(inode
)->client
, NFS_SERVER(inode
),
5032 &msg
, &args
.seq_args
, &res
.seq_res
, 0);
5036 /* Handle the case where the passed-in buffer is too short */
5037 if (res
.acl_flags
& NFS4_ACL_TRUNC
) {
5038 /* Did the user only issue a request for the acl length? */
5044 nfs4_write_cached_acl(inode
, pages
, res
.acl_data_offset
, res
.acl_len
);
5046 if (res
.acl_len
> buflen
) {
5050 _copy_from_pages(buf
, pages
, res
.acl_data_offset
, res
.acl_len
);
5055 for (i
= 0; i
< npages
; i
++)
5057 __free_page(pages
[i
]);
5058 if (res
.acl_scratch
)
5059 __free_page(res
.acl_scratch
);
5063 static ssize_t
nfs4_get_acl_uncached(struct inode
*inode
, void *buf
, size_t buflen
)
5065 struct nfs4_exception exception
= { };
5068 ret
= __nfs4_get_acl_uncached(inode
, buf
, buflen
);
5069 trace_nfs4_get_acl(inode
, ret
);
5072 ret
= nfs4_handle_exception(NFS_SERVER(inode
), ret
, &exception
);
5073 } while (exception
.retry
);
5077 static ssize_t
nfs4_proc_get_acl(struct inode
*inode
, void *buf
, size_t buflen
)
5079 struct nfs_server
*server
= NFS_SERVER(inode
);
5082 if (!nfs4_server_supports_acls(server
))
5084 ret
= nfs_revalidate_inode(server
, inode
);
5087 if (NFS_I(inode
)->cache_validity
& NFS_INO_INVALID_ACL
)
5088 nfs_zap_acl_cache(inode
);
5089 ret
= nfs4_read_cached_acl(inode
, buf
, buflen
);
5091 /* -ENOENT is returned if there is no ACL or if there is an ACL
5092 * but no cached acl data, just the acl length */
5094 return nfs4_get_acl_uncached(inode
, buf
, buflen
);
5097 static int __nfs4_proc_set_acl(struct inode
*inode
, const void *buf
, size_t buflen
)
5099 struct nfs_server
*server
= NFS_SERVER(inode
);
5100 struct page
*pages
[NFS4ACL_MAXPAGES
];
5101 struct nfs_setaclargs arg
= {
5102 .fh
= NFS_FH(inode
),
5106 struct nfs_setaclres res
;
5107 struct rpc_message msg
= {
5108 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETACL
],
5112 unsigned int npages
= DIV_ROUND_UP(buflen
, PAGE_SIZE
);
5115 if (!nfs4_server_supports_acls(server
))
5117 if (npages
> ARRAY_SIZE(pages
))
5119 i
= buf_to_pages_noslab(buf
, buflen
, arg
.acl_pages
);
5122 nfs4_inode_return_delegation(inode
);
5123 ret
= nfs4_call_sync(server
->client
, server
, &msg
, &arg
.seq_args
, &res
.seq_res
, 1);
5126 * Free each page after tx, so the only ref left is
5127 * held by the network stack
5130 put_page(pages
[i
-1]);
5133 * Acl update can result in inode attribute update.
5134 * so mark the attribute cache invalid.
5136 spin_lock(&inode
->i_lock
);
5137 NFS_I(inode
)->cache_validity
|= NFS_INO_INVALID_ATTR
;
5138 spin_unlock(&inode
->i_lock
);
5139 nfs_access_zap_cache(inode
);
5140 nfs_zap_acl_cache(inode
);
5144 static int nfs4_proc_set_acl(struct inode
*inode
, const void *buf
, size_t buflen
)
5146 struct nfs4_exception exception
= { };
5149 err
= __nfs4_proc_set_acl(inode
, buf
, buflen
);
5150 trace_nfs4_set_acl(inode
, err
);
5151 err
= nfs4_handle_exception(NFS_SERVER(inode
), err
,
5153 } while (exception
.retry
);
5157 #ifdef CONFIG_NFS_V4_SECURITY_LABEL
5158 static int _nfs4_get_security_label(struct inode
*inode
, void *buf
,
5161 struct nfs_server
*server
= NFS_SERVER(inode
);
5162 struct nfs_fattr fattr
;
5163 struct nfs4_label label
= {0, 0, buflen
, buf
};
5165 u32 bitmask
[3] = { 0, 0, FATTR4_WORD2_SECURITY_LABEL
};
5166 struct nfs4_getattr_arg arg
= {
5167 .fh
= NFS_FH(inode
),
5170 struct nfs4_getattr_res res
= {
5175 struct rpc_message msg
= {
5176 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GETATTR
],
5182 nfs_fattr_init(&fattr
);
5184 ret
= nfs4_call_sync(server
->client
, server
, &msg
, &arg
.seq_args
, &res
.seq_res
, 0);
5187 if (!(fattr
.valid
& NFS_ATTR_FATTR_V4_SECURITY_LABEL
))
5189 if (buflen
< label
.len
)
5194 static int nfs4_get_security_label(struct inode
*inode
, void *buf
,
5197 struct nfs4_exception exception
= { };
5200 if (!nfs_server_capable(inode
, NFS_CAP_SECURITY_LABEL
))
5204 err
= _nfs4_get_security_label(inode
, buf
, buflen
);
5205 trace_nfs4_get_security_label(inode
, err
);
5206 err
= nfs4_handle_exception(NFS_SERVER(inode
), err
,
5208 } while (exception
.retry
);
5212 static int _nfs4_do_set_security_label(struct inode
*inode
,
5213 struct nfs4_label
*ilabel
,
5214 struct nfs_fattr
*fattr
,
5215 struct nfs4_label
*olabel
)
5218 struct iattr sattr
= {0};
5219 struct nfs_server
*server
= NFS_SERVER(inode
);
5220 const u32 bitmask
[3] = { 0, 0, FATTR4_WORD2_SECURITY_LABEL
};
5221 struct nfs_setattrargs arg
= {
5222 .fh
= NFS_FH(inode
),
5228 struct nfs_setattrres res
= {
5233 struct rpc_message msg
= {
5234 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETATTR
],
5240 nfs4_stateid_copy(&arg
.stateid
, &zero_stateid
);
5242 status
= nfs4_call_sync(server
->client
, server
, &msg
, &arg
.seq_args
, &res
.seq_res
, 1);
5244 dprintk("%s failed: %d\n", __func__
, status
);
5249 static int nfs4_do_set_security_label(struct inode
*inode
,
5250 struct nfs4_label
*ilabel
,
5251 struct nfs_fattr
*fattr
,
5252 struct nfs4_label
*olabel
)
5254 struct nfs4_exception exception
= { };
5258 err
= _nfs4_do_set_security_label(inode
, ilabel
,
5260 trace_nfs4_set_security_label(inode
, err
);
5261 err
= nfs4_handle_exception(NFS_SERVER(inode
), err
,
5263 } while (exception
.retry
);
5268 nfs4_set_security_label(struct inode
*inode
, const void *buf
, size_t buflen
)
5270 struct nfs4_label ilabel
, *olabel
= NULL
;
5271 struct nfs_fattr fattr
;
5272 struct rpc_cred
*cred
;
5275 if (!nfs_server_capable(inode
, NFS_CAP_SECURITY_LABEL
))
5278 nfs_fattr_init(&fattr
);
5282 ilabel
.label
= (char *)buf
;
5283 ilabel
.len
= buflen
;
5285 cred
= rpc_lookup_cred();
5287 return PTR_ERR(cred
);
5289 olabel
= nfs4_label_alloc(NFS_SERVER(inode
), GFP_KERNEL
);
5290 if (IS_ERR(olabel
)) {
5291 status
= -PTR_ERR(olabel
);
5295 status
= nfs4_do_set_security_label(inode
, &ilabel
, &fattr
, olabel
);
5297 nfs_setsecurity(inode
, &fattr
, olabel
);
5299 nfs4_label_free(olabel
);
5304 #endif /* CONFIG_NFS_V4_SECURITY_LABEL */
5307 static void nfs4_init_boot_verifier(const struct nfs_client
*clp
,
5308 nfs4_verifier
*bootverf
)
5312 if (test_bit(NFS4CLNT_PURGE_STATE
, &clp
->cl_state
)) {
5313 /* An impossible timestamp guarantees this value
5314 * will never match a generated boot time. */
5315 verf
[0] = cpu_to_be32(U32_MAX
);
5316 verf
[1] = cpu_to_be32(U32_MAX
);
5318 struct nfs_net
*nn
= net_generic(clp
->cl_net
, nfs_net_id
);
5319 u64 ns
= ktime_to_ns(nn
->boot_time
);
5321 verf
[0] = cpu_to_be32(ns
>> 32);
5322 verf
[1] = cpu_to_be32(ns
);
5324 memcpy(bootverf
->data
, verf
, sizeof(bootverf
->data
));
5328 nfs4_init_nonuniform_client_string(struct nfs_client
*clp
)
5333 if (clp
->cl_owner_id
!= NULL
)
5337 len
= 14 + strlen(clp
->cl_ipaddr
) + 1 +
5338 strlen(rpc_peeraddr2str(clp
->cl_rpcclient
, RPC_DISPLAY_ADDR
)) +
5340 strlen(rpc_peeraddr2str(clp
->cl_rpcclient
, RPC_DISPLAY_PROTO
)) +
5344 if (len
> NFS4_OPAQUE_LIMIT
+ 1)
5348 * Since this string is allocated at mount time, and held until the
5349 * nfs_client is destroyed, we can use GFP_KERNEL here w/o worrying
5350 * about a memory-reclaim deadlock.
5352 str
= kmalloc(len
, GFP_KERNEL
);
5357 scnprintf(str
, len
, "Linux NFSv4.0 %s/%s %s",
5359 rpc_peeraddr2str(clp
->cl_rpcclient
, RPC_DISPLAY_ADDR
),
5360 rpc_peeraddr2str(clp
->cl_rpcclient
, RPC_DISPLAY_PROTO
));
5363 clp
->cl_owner_id
= str
;
5368 nfs4_init_uniquifier_client_string(struct nfs_client
*clp
)
5373 len
= 10 + 10 + 1 + 10 + 1 +
5374 strlen(nfs4_client_id_uniquifier
) + 1 +
5375 strlen(clp
->cl_rpcclient
->cl_nodename
) + 1;
5377 if (len
> NFS4_OPAQUE_LIMIT
+ 1)
5381 * Since this string is allocated at mount time, and held until the
5382 * nfs_client is destroyed, we can use GFP_KERNEL here w/o worrying
5383 * about a memory-reclaim deadlock.
5385 str
= kmalloc(len
, GFP_KERNEL
);
5389 scnprintf(str
, len
, "Linux NFSv%u.%u %s/%s",
5390 clp
->rpc_ops
->version
, clp
->cl_minorversion
,
5391 nfs4_client_id_uniquifier
,
5392 clp
->cl_rpcclient
->cl_nodename
);
5393 clp
->cl_owner_id
= str
;
5398 nfs4_init_uniform_client_string(struct nfs_client
*clp
)
5403 if (clp
->cl_owner_id
!= NULL
)
5406 if (nfs4_client_id_uniquifier
[0] != '\0')
5407 return nfs4_init_uniquifier_client_string(clp
);
5409 len
= 10 + 10 + 1 + 10 + 1 +
5410 strlen(clp
->cl_rpcclient
->cl_nodename
) + 1;
5412 if (len
> NFS4_OPAQUE_LIMIT
+ 1)
5416 * Since this string is allocated at mount time, and held until the
5417 * nfs_client is destroyed, we can use GFP_KERNEL here w/o worrying
5418 * about a memory-reclaim deadlock.
5420 str
= kmalloc(len
, GFP_KERNEL
);
5424 scnprintf(str
, len
, "Linux NFSv%u.%u %s",
5425 clp
->rpc_ops
->version
, clp
->cl_minorversion
,
5426 clp
->cl_rpcclient
->cl_nodename
);
5427 clp
->cl_owner_id
= str
;
5432 * nfs4_callback_up_net() starts only "tcp" and "tcp6" callback
5433 * services. Advertise one based on the address family of the
5437 nfs4_init_callback_netid(const struct nfs_client
*clp
, char *buf
, size_t len
)
5439 if (strchr(clp
->cl_ipaddr
, ':') != NULL
)
5440 return scnprintf(buf
, len
, "tcp6");
5442 return scnprintf(buf
, len
, "tcp");
5445 static void nfs4_setclientid_done(struct rpc_task
*task
, void *calldata
)
5447 struct nfs4_setclientid
*sc
= calldata
;
5449 if (task
->tk_status
== 0)
5450 sc
->sc_cred
= get_rpccred(task
->tk_rqstp
->rq_cred
);
5453 static const struct rpc_call_ops nfs4_setclientid_ops
= {
5454 .rpc_call_done
= nfs4_setclientid_done
,
5458 * nfs4_proc_setclientid - Negotiate client ID
5459 * @clp: state data structure
5460 * @program: RPC program for NFSv4 callback service
5461 * @port: IP port number for NFS4 callback service
5462 * @cred: RPC credential to use for this call
5463 * @res: where to place the result
5465 * Returns zero, a negative errno, or a negative NFS4ERR status code.
5467 int nfs4_proc_setclientid(struct nfs_client
*clp
, u32 program
,
5468 unsigned short port
, struct rpc_cred
*cred
,
5469 struct nfs4_setclientid_res
*res
)
5471 nfs4_verifier sc_verifier
;
5472 struct nfs4_setclientid setclientid
= {
5473 .sc_verifier
= &sc_verifier
,
5477 struct rpc_message msg
= {
5478 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETCLIENTID
],
5479 .rpc_argp
= &setclientid
,
5483 struct rpc_task
*task
;
5484 struct rpc_task_setup task_setup_data
= {
5485 .rpc_client
= clp
->cl_rpcclient
,
5486 .rpc_message
= &msg
,
5487 .callback_ops
= &nfs4_setclientid_ops
,
5488 .callback_data
= &setclientid
,
5489 .flags
= RPC_TASK_TIMEOUT
,
5493 /* nfs_client_id4 */
5494 nfs4_init_boot_verifier(clp
, &sc_verifier
);
5496 if (test_bit(NFS_CS_MIGRATION
, &clp
->cl_flags
))
5497 status
= nfs4_init_uniform_client_string(clp
);
5499 status
= nfs4_init_nonuniform_client_string(clp
);
5505 setclientid
.sc_netid_len
=
5506 nfs4_init_callback_netid(clp
,
5507 setclientid
.sc_netid
,
5508 sizeof(setclientid
.sc_netid
));
5509 setclientid
.sc_uaddr_len
= scnprintf(setclientid
.sc_uaddr
,
5510 sizeof(setclientid
.sc_uaddr
), "%s.%u.%u",
5511 clp
->cl_ipaddr
, port
>> 8, port
& 255);
5513 dprintk("NFS call setclientid auth=%s, '%s'\n",
5514 clp
->cl_rpcclient
->cl_auth
->au_ops
->au_name
,
5516 task
= rpc_run_task(&task_setup_data
);
5518 status
= PTR_ERR(task
);
5521 status
= task
->tk_status
;
5522 if (setclientid
.sc_cred
) {
5523 clp
->cl_acceptor
= rpcauth_stringify_acceptor(setclientid
.sc_cred
);
5524 put_rpccred(setclientid
.sc_cred
);
5528 trace_nfs4_setclientid(clp
, status
);
5529 dprintk("NFS reply setclientid: %d\n", status
);
5534 * nfs4_proc_setclientid_confirm - Confirm client ID
5535 * @clp: state data structure
5536 * @res: result of a previous SETCLIENTID
5537 * @cred: RPC credential to use for this call
5539 * Returns zero, a negative errno, or a negative NFS4ERR status code.
5541 int nfs4_proc_setclientid_confirm(struct nfs_client
*clp
,
5542 struct nfs4_setclientid_res
*arg
,
5543 struct rpc_cred
*cred
)
5545 struct rpc_message msg
= {
5546 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETCLIENTID_CONFIRM
],
5552 dprintk("NFS call setclientid_confirm auth=%s, (client ID %llx)\n",
5553 clp
->cl_rpcclient
->cl_auth
->au_ops
->au_name
,
5555 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
5556 trace_nfs4_setclientid_confirm(clp
, status
);
5557 dprintk("NFS reply setclientid_confirm: %d\n", status
);
5561 struct nfs4_delegreturndata
{
5562 struct nfs4_delegreturnargs args
;
5563 struct nfs4_delegreturnres res
;
5565 nfs4_stateid stateid
;
5566 unsigned long timestamp
;
5567 struct nfs_fattr fattr
;
5569 struct inode
*inode
;
5574 static void nfs4_delegreturn_done(struct rpc_task
*task
, void *calldata
)
5576 struct nfs4_delegreturndata
*data
= calldata
;
5578 if (!nfs4_sequence_done(task
, &data
->res
.seq_res
))
5581 trace_nfs4_delegreturn_exit(&data
->args
, &data
->res
, task
->tk_status
);
5582 switch (task
->tk_status
) {
5584 renew_lease(data
->res
.server
, data
->timestamp
);
5586 case -NFS4ERR_ADMIN_REVOKED
:
5587 case -NFS4ERR_DELEG_REVOKED
:
5588 case -NFS4ERR_EXPIRED
:
5589 nfs4_free_revoked_stateid(data
->res
.server
,
5591 task
->tk_msg
.rpc_cred
);
5592 case -NFS4ERR_BAD_STATEID
:
5593 case -NFS4ERR_OLD_STATEID
:
5594 case -NFS4ERR_STALE_STATEID
:
5595 task
->tk_status
= 0;
5598 if (nfs4_async_handle_error(task
, data
->res
.server
,
5599 NULL
, NULL
) == -EAGAIN
) {
5600 rpc_restart_call_prepare(task
);
5604 data
->rpc_status
= task
->tk_status
;
5605 if (data
->roc
&& data
->rpc_status
== 0)
5606 pnfs_roc_set_barrier(data
->inode
, data
->roc_barrier
);
5609 static void nfs4_delegreturn_release(void *calldata
)
5611 struct nfs4_delegreturndata
*data
= calldata
;
5612 struct inode
*inode
= data
->inode
;
5616 pnfs_roc_release(inode
);
5617 nfs_iput_and_deactive(inode
);
5622 static void nfs4_delegreturn_prepare(struct rpc_task
*task
, void *data
)
5624 struct nfs4_delegreturndata
*d_data
;
5626 d_data
= (struct nfs4_delegreturndata
*)data
;
5628 if (nfs4_wait_on_layoutreturn(d_data
->inode
, task
))
5632 pnfs_roc_get_barrier(d_data
->inode
, &d_data
->roc_barrier
);
5634 nfs4_setup_sequence(d_data
->res
.server
,
5635 &d_data
->args
.seq_args
,
5636 &d_data
->res
.seq_res
,
5640 static const struct rpc_call_ops nfs4_delegreturn_ops
= {
5641 .rpc_call_prepare
= nfs4_delegreturn_prepare
,
5642 .rpc_call_done
= nfs4_delegreturn_done
,
5643 .rpc_release
= nfs4_delegreturn_release
,
5646 static int _nfs4_proc_delegreturn(struct inode
*inode
, struct rpc_cred
*cred
, const nfs4_stateid
*stateid
, int issync
)
5648 struct nfs4_delegreturndata
*data
;
5649 struct nfs_server
*server
= NFS_SERVER(inode
);
5650 struct rpc_task
*task
;
5651 struct rpc_message msg
= {
5652 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_DELEGRETURN
],
5655 struct rpc_task_setup task_setup_data
= {
5656 .rpc_client
= server
->client
,
5657 .rpc_message
= &msg
,
5658 .callback_ops
= &nfs4_delegreturn_ops
,
5659 .flags
= RPC_TASK_ASYNC
,
5663 data
= kzalloc(sizeof(*data
), GFP_NOFS
);
5666 nfs4_init_sequence(&data
->args
.seq_args
, &data
->res
.seq_res
, 1);
5668 nfs4_state_protect(server
->nfs_client
,
5669 NFS_SP4_MACH_CRED_CLEANUP
,
5670 &task_setup_data
.rpc_client
, &msg
);
5672 data
->args
.fhandle
= &data
->fh
;
5673 data
->args
.stateid
= &data
->stateid
;
5674 data
->args
.bitmask
= server
->cache_consistency_bitmask
;
5675 nfs_copy_fh(&data
->fh
, NFS_FH(inode
));
5676 nfs4_stateid_copy(&data
->stateid
, stateid
);
5677 data
->res
.fattr
= &data
->fattr
;
5678 data
->res
.server
= server
;
5679 nfs_fattr_init(data
->res
.fattr
);
5680 data
->timestamp
= jiffies
;
5681 data
->rpc_status
= 0;
5682 data
->inode
= nfs_igrab_and_active(inode
);
5684 data
->roc
= nfs4_roc(inode
);
5686 task_setup_data
.callback_data
= data
;
5687 msg
.rpc_argp
= &data
->args
;
5688 msg
.rpc_resp
= &data
->res
;
5689 task
= rpc_run_task(&task_setup_data
);
5691 return PTR_ERR(task
);
5694 status
= nfs4_wait_for_completion_rpc_task(task
);
5697 status
= data
->rpc_status
;
5699 nfs_post_op_update_inode_force_wcc(inode
, &data
->fattr
);
5701 nfs_refresh_inode(inode
, &data
->fattr
);
5707 int nfs4_proc_delegreturn(struct inode
*inode
, struct rpc_cred
*cred
, const nfs4_stateid
*stateid
, int issync
)
5709 struct nfs_server
*server
= NFS_SERVER(inode
);
5710 struct nfs4_exception exception
= { };
5713 err
= _nfs4_proc_delegreturn(inode
, cred
, stateid
, issync
);
5714 trace_nfs4_delegreturn(inode
, stateid
, err
);
5716 case -NFS4ERR_STALE_STATEID
:
5717 case -NFS4ERR_EXPIRED
:
5721 err
= nfs4_handle_exception(server
, err
, &exception
);
5722 } while (exception
.retry
);
5726 static int _nfs4_proc_getlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
5728 struct inode
*inode
= state
->inode
;
5729 struct nfs_server
*server
= NFS_SERVER(inode
);
5730 struct nfs_client
*clp
= server
->nfs_client
;
5731 struct nfs_lockt_args arg
= {
5732 .fh
= NFS_FH(inode
),
5735 struct nfs_lockt_res res
= {
5738 struct rpc_message msg
= {
5739 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOCKT
],
5742 .rpc_cred
= state
->owner
->so_cred
,
5744 struct nfs4_lock_state
*lsp
;
5747 arg
.lock_owner
.clientid
= clp
->cl_clientid
;
5748 status
= nfs4_set_lock_state(state
, request
);
5751 lsp
= request
->fl_u
.nfs4_fl
.owner
;
5752 arg
.lock_owner
.id
= lsp
->ls_seqid
.owner_id
;
5753 arg
.lock_owner
.s_dev
= server
->s_dev
;
5754 status
= nfs4_call_sync(server
->client
, server
, &msg
, &arg
.seq_args
, &res
.seq_res
, 1);
5757 request
->fl_type
= F_UNLCK
;
5759 case -NFS4ERR_DENIED
:
5762 request
->fl_ops
->fl_release_private(request
);
5763 request
->fl_ops
= NULL
;
5768 static int nfs4_proc_getlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
5770 struct nfs4_exception exception
= { };
5774 err
= _nfs4_proc_getlk(state
, cmd
, request
);
5775 trace_nfs4_get_lock(request
, state
, cmd
, err
);
5776 err
= nfs4_handle_exception(NFS_SERVER(state
->inode
), err
,
5778 } while (exception
.retry
);
5782 struct nfs4_unlockdata
{
5783 struct nfs_locku_args arg
;
5784 struct nfs_locku_res res
;
5785 struct nfs4_lock_state
*lsp
;
5786 struct nfs_open_context
*ctx
;
5787 struct file_lock fl
;
5788 struct nfs_server
*server
;
5789 unsigned long timestamp
;
5792 static struct nfs4_unlockdata
*nfs4_alloc_unlockdata(struct file_lock
*fl
,
5793 struct nfs_open_context
*ctx
,
5794 struct nfs4_lock_state
*lsp
,
5795 struct nfs_seqid
*seqid
)
5797 struct nfs4_unlockdata
*p
;
5798 struct inode
*inode
= lsp
->ls_state
->inode
;
5800 p
= kzalloc(sizeof(*p
), GFP_NOFS
);
5803 p
->arg
.fh
= NFS_FH(inode
);
5805 p
->arg
.seqid
= seqid
;
5806 p
->res
.seqid
= seqid
;
5808 atomic_inc(&lsp
->ls_count
);
5809 /* Ensure we don't close file until we're done freeing locks! */
5810 p
->ctx
= get_nfs_open_context(ctx
);
5811 memcpy(&p
->fl
, fl
, sizeof(p
->fl
));
5812 p
->server
= NFS_SERVER(inode
);
5816 static void nfs4_locku_release_calldata(void *data
)
5818 struct nfs4_unlockdata
*calldata
= data
;
5819 nfs_free_seqid(calldata
->arg
.seqid
);
5820 nfs4_put_lock_state(calldata
->lsp
);
5821 put_nfs_open_context(calldata
->ctx
);
5825 static void nfs4_locku_done(struct rpc_task
*task
, void *data
)
5827 struct nfs4_unlockdata
*calldata
= data
;
5829 if (!nfs4_sequence_done(task
, &calldata
->res
.seq_res
))
5831 switch (task
->tk_status
) {
5833 renew_lease(calldata
->server
, calldata
->timestamp
);
5834 locks_lock_inode_wait(calldata
->lsp
->ls_state
->inode
, &calldata
->fl
);
5835 if (nfs4_update_lock_stateid(calldata
->lsp
,
5836 &calldata
->res
.stateid
))
5838 case -NFS4ERR_ADMIN_REVOKED
:
5839 case -NFS4ERR_EXPIRED
:
5840 nfs4_free_revoked_stateid(calldata
->server
,
5841 &calldata
->arg
.stateid
,
5842 task
->tk_msg
.rpc_cred
);
5843 case -NFS4ERR_BAD_STATEID
:
5844 case -NFS4ERR_OLD_STATEID
:
5845 case -NFS4ERR_STALE_STATEID
:
5846 if (!nfs4_stateid_match(&calldata
->arg
.stateid
,
5847 &calldata
->lsp
->ls_stateid
))
5848 rpc_restart_call_prepare(task
);
5851 if (nfs4_async_handle_error(task
, calldata
->server
,
5852 NULL
, NULL
) == -EAGAIN
)
5853 rpc_restart_call_prepare(task
);
5855 nfs_release_seqid(calldata
->arg
.seqid
);
5858 static void nfs4_locku_prepare(struct rpc_task
*task
, void *data
)
5860 struct nfs4_unlockdata
*calldata
= data
;
5862 if (nfs_wait_on_sequence(calldata
->arg
.seqid
, task
) != 0)
5864 nfs4_stateid_copy(&calldata
->arg
.stateid
, &calldata
->lsp
->ls_stateid
);
5865 if (test_bit(NFS_LOCK_INITIALIZED
, &calldata
->lsp
->ls_flags
) == 0) {
5866 /* Note: exit _without_ running nfs4_locku_done */
5869 calldata
->timestamp
= jiffies
;
5870 if (nfs4_setup_sequence(calldata
->server
,
5871 &calldata
->arg
.seq_args
,
5872 &calldata
->res
.seq_res
,
5874 nfs_release_seqid(calldata
->arg
.seqid
);
5877 task
->tk_action
= NULL
;
5879 nfs4_sequence_done(task
, &calldata
->res
.seq_res
);
5882 static const struct rpc_call_ops nfs4_locku_ops
= {
5883 .rpc_call_prepare
= nfs4_locku_prepare
,
5884 .rpc_call_done
= nfs4_locku_done
,
5885 .rpc_release
= nfs4_locku_release_calldata
,
5888 static struct rpc_task
*nfs4_do_unlck(struct file_lock
*fl
,
5889 struct nfs_open_context
*ctx
,
5890 struct nfs4_lock_state
*lsp
,
5891 struct nfs_seqid
*seqid
)
5893 struct nfs4_unlockdata
*data
;
5894 struct rpc_message msg
= {
5895 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOCKU
],
5896 .rpc_cred
= ctx
->cred
,
5898 struct rpc_task_setup task_setup_data
= {
5899 .rpc_client
= NFS_CLIENT(lsp
->ls_state
->inode
),
5900 .rpc_message
= &msg
,
5901 .callback_ops
= &nfs4_locku_ops
,
5902 .workqueue
= nfsiod_workqueue
,
5903 .flags
= RPC_TASK_ASYNC
,
5906 nfs4_state_protect(NFS_SERVER(lsp
->ls_state
->inode
)->nfs_client
,
5907 NFS_SP4_MACH_CRED_CLEANUP
, &task_setup_data
.rpc_client
, &msg
);
5909 /* Ensure this is an unlock - when canceling a lock, the
5910 * canceled lock is passed in, and it won't be an unlock.
5912 fl
->fl_type
= F_UNLCK
;
5914 data
= nfs4_alloc_unlockdata(fl
, ctx
, lsp
, seqid
);
5916 nfs_free_seqid(seqid
);
5917 return ERR_PTR(-ENOMEM
);
5920 nfs4_init_sequence(&data
->arg
.seq_args
, &data
->res
.seq_res
, 1);
5921 msg
.rpc_argp
= &data
->arg
;
5922 msg
.rpc_resp
= &data
->res
;
5923 task_setup_data
.callback_data
= data
;
5924 return rpc_run_task(&task_setup_data
);
5927 static int nfs4_proc_unlck(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
5929 struct inode
*inode
= state
->inode
;
5930 struct nfs4_state_owner
*sp
= state
->owner
;
5931 struct nfs_inode
*nfsi
= NFS_I(inode
);
5932 struct nfs_seqid
*seqid
;
5933 struct nfs4_lock_state
*lsp
;
5934 struct rpc_task
*task
;
5935 struct nfs_seqid
*(*alloc_seqid
)(struct nfs_seqid_counter
*, gfp_t
);
5937 unsigned char fl_flags
= request
->fl_flags
;
5939 status
= nfs4_set_lock_state(state
, request
);
5940 /* Unlock _before_ we do the RPC call */
5941 request
->fl_flags
|= FL_EXISTS
;
5942 /* Exclude nfs_delegation_claim_locks() */
5943 mutex_lock(&sp
->so_delegreturn_mutex
);
5944 /* Exclude nfs4_reclaim_open_stateid() - note nesting! */
5945 down_read(&nfsi
->rwsem
);
5946 if (locks_lock_inode_wait(inode
, request
) == -ENOENT
) {
5947 up_read(&nfsi
->rwsem
);
5948 mutex_unlock(&sp
->so_delegreturn_mutex
);
5951 up_read(&nfsi
->rwsem
);
5952 mutex_unlock(&sp
->so_delegreturn_mutex
);
5955 /* Is this a delegated lock? */
5956 lsp
= request
->fl_u
.nfs4_fl
.owner
;
5957 if (test_bit(NFS_LOCK_INITIALIZED
, &lsp
->ls_flags
) == 0)
5959 alloc_seqid
= NFS_SERVER(inode
)->nfs_client
->cl_mvops
->alloc_seqid
;
5960 seqid
= alloc_seqid(&lsp
->ls_seqid
, GFP_KERNEL
);
5964 task
= nfs4_do_unlck(request
, nfs_file_open_context(request
->fl_file
), lsp
, seqid
);
5965 status
= PTR_ERR(task
);
5968 status
= nfs4_wait_for_completion_rpc_task(task
);
5971 request
->fl_flags
= fl_flags
;
5972 trace_nfs4_unlock(request
, state
, F_SETLK
, status
);
5976 struct nfs4_lockdata
{
5977 struct nfs_lock_args arg
;
5978 struct nfs_lock_res res
;
5979 struct nfs4_lock_state
*lsp
;
5980 struct nfs_open_context
*ctx
;
5981 struct file_lock fl
;
5982 unsigned long timestamp
;
5985 struct nfs_server
*server
;
5988 static struct nfs4_lockdata
*nfs4_alloc_lockdata(struct file_lock
*fl
,
5989 struct nfs_open_context
*ctx
, struct nfs4_lock_state
*lsp
,
5992 struct nfs4_lockdata
*p
;
5993 struct inode
*inode
= lsp
->ls_state
->inode
;
5994 struct nfs_server
*server
= NFS_SERVER(inode
);
5995 struct nfs_seqid
*(*alloc_seqid
)(struct nfs_seqid_counter
*, gfp_t
);
5997 p
= kzalloc(sizeof(*p
), gfp_mask
);
6001 p
->arg
.fh
= NFS_FH(inode
);
6003 p
->arg
.open_seqid
= nfs_alloc_seqid(&lsp
->ls_state
->owner
->so_seqid
, gfp_mask
);
6004 if (IS_ERR(p
->arg
.open_seqid
))
6006 alloc_seqid
= server
->nfs_client
->cl_mvops
->alloc_seqid
;
6007 p
->arg
.lock_seqid
= alloc_seqid(&lsp
->ls_seqid
, gfp_mask
);
6008 if (IS_ERR(p
->arg
.lock_seqid
))
6009 goto out_free_seqid
;
6010 p
->arg
.lock_owner
.clientid
= server
->nfs_client
->cl_clientid
;
6011 p
->arg
.lock_owner
.id
= lsp
->ls_seqid
.owner_id
;
6012 p
->arg
.lock_owner
.s_dev
= server
->s_dev
;
6013 p
->res
.lock_seqid
= p
->arg
.lock_seqid
;
6016 atomic_inc(&lsp
->ls_count
);
6017 p
->ctx
= get_nfs_open_context(ctx
);
6018 get_file(fl
->fl_file
);
6019 memcpy(&p
->fl
, fl
, sizeof(p
->fl
));
6022 nfs_free_seqid(p
->arg
.open_seqid
);
6028 static void nfs4_lock_prepare(struct rpc_task
*task
, void *calldata
)
6030 struct nfs4_lockdata
*data
= calldata
;
6031 struct nfs4_state
*state
= data
->lsp
->ls_state
;
6033 dprintk("%s: begin!\n", __func__
);
6034 if (nfs_wait_on_sequence(data
->arg
.lock_seqid
, task
) != 0)
6036 /* Do we need to do an open_to_lock_owner? */
6037 if (!test_bit(NFS_LOCK_INITIALIZED
, &data
->lsp
->ls_flags
)) {
6038 if (nfs_wait_on_sequence(data
->arg
.open_seqid
, task
) != 0) {
6039 goto out_release_lock_seqid
;
6041 nfs4_stateid_copy(&data
->arg
.open_stateid
,
6042 &state
->open_stateid
);
6043 data
->arg
.new_lock_owner
= 1;
6044 data
->res
.open_seqid
= data
->arg
.open_seqid
;
6046 data
->arg
.new_lock_owner
= 0;
6047 nfs4_stateid_copy(&data
->arg
.lock_stateid
,
6048 &data
->lsp
->ls_stateid
);
6050 if (!nfs4_valid_open_stateid(state
)) {
6051 data
->rpc_status
= -EBADF
;
6052 task
->tk_action
= NULL
;
6053 goto out_release_open_seqid
;
6055 data
->timestamp
= jiffies
;
6056 if (nfs4_setup_sequence(data
->server
,
6057 &data
->arg
.seq_args
,
6061 out_release_open_seqid
:
6062 nfs_release_seqid(data
->arg
.open_seqid
);
6063 out_release_lock_seqid
:
6064 nfs_release_seqid(data
->arg
.lock_seqid
);
6066 nfs4_sequence_done(task
, &data
->res
.seq_res
);
6067 dprintk("%s: done!, ret = %d\n", __func__
, data
->rpc_status
);
6070 static void nfs4_lock_done(struct rpc_task
*task
, void *calldata
)
6072 struct nfs4_lockdata
*data
= calldata
;
6073 struct nfs4_lock_state
*lsp
= data
->lsp
;
6075 dprintk("%s: begin!\n", __func__
);
6077 if (!nfs4_sequence_done(task
, &data
->res
.seq_res
))
6080 data
->rpc_status
= task
->tk_status
;
6081 switch (task
->tk_status
) {
6083 renew_lease(NFS_SERVER(d_inode(data
->ctx
->dentry
)),
6085 if (data
->arg
.new_lock
) {
6086 data
->fl
.fl_flags
&= ~(FL_SLEEP
| FL_ACCESS
);
6087 if (locks_lock_inode_wait(lsp
->ls_state
->inode
, &data
->fl
) < 0) {
6088 rpc_restart_call_prepare(task
);
6092 if (data
->arg
.new_lock_owner
!= 0) {
6093 nfs_confirm_seqid(&lsp
->ls_seqid
, 0);
6094 nfs4_stateid_copy(&lsp
->ls_stateid
, &data
->res
.stateid
);
6095 set_bit(NFS_LOCK_INITIALIZED
, &lsp
->ls_flags
);
6096 } else if (!nfs4_update_lock_stateid(lsp
, &data
->res
.stateid
))
6097 rpc_restart_call_prepare(task
);
6099 case -NFS4ERR_BAD_STATEID
:
6100 case -NFS4ERR_OLD_STATEID
:
6101 case -NFS4ERR_STALE_STATEID
:
6102 case -NFS4ERR_EXPIRED
:
6103 if (data
->arg
.new_lock_owner
!= 0) {
6104 if (!nfs4_stateid_match(&data
->arg
.open_stateid
,
6105 &lsp
->ls_state
->open_stateid
))
6106 rpc_restart_call_prepare(task
);
6107 } else if (!nfs4_stateid_match(&data
->arg
.lock_stateid
,
6109 rpc_restart_call_prepare(task
);
6111 dprintk("%s: done, ret = %d!\n", __func__
, data
->rpc_status
);
6114 static void nfs4_lock_release(void *calldata
)
6116 struct nfs4_lockdata
*data
= calldata
;
6118 dprintk("%s: begin!\n", __func__
);
6119 nfs_free_seqid(data
->arg
.open_seqid
);
6120 if (data
->cancelled
!= 0) {
6121 struct rpc_task
*task
;
6122 task
= nfs4_do_unlck(&data
->fl
, data
->ctx
, data
->lsp
,
6123 data
->arg
.lock_seqid
);
6125 rpc_put_task_async(task
);
6126 dprintk("%s: cancelling lock!\n", __func__
);
6128 nfs_free_seqid(data
->arg
.lock_seqid
);
6129 nfs4_put_lock_state(data
->lsp
);
6130 put_nfs_open_context(data
->ctx
);
6131 fput(data
->fl
.fl_file
);
6133 dprintk("%s: done!\n", __func__
);
6136 static const struct rpc_call_ops nfs4_lock_ops
= {
6137 .rpc_call_prepare
= nfs4_lock_prepare
,
6138 .rpc_call_done
= nfs4_lock_done
,
6139 .rpc_release
= nfs4_lock_release
,
6142 static void nfs4_handle_setlk_error(struct nfs_server
*server
, struct nfs4_lock_state
*lsp
, int new_lock_owner
, int error
)
6145 case -NFS4ERR_ADMIN_REVOKED
:
6146 case -NFS4ERR_EXPIRED
:
6147 case -NFS4ERR_BAD_STATEID
:
6148 lsp
->ls_seqid
.flags
&= ~NFS_SEQID_CONFIRMED
;
6149 if (new_lock_owner
!= 0 ||
6150 test_bit(NFS_LOCK_INITIALIZED
, &lsp
->ls_flags
) != 0)
6151 nfs4_schedule_stateid_recovery(server
, lsp
->ls_state
);
6153 case -NFS4ERR_STALE_STATEID
:
6154 lsp
->ls_seqid
.flags
&= ~NFS_SEQID_CONFIRMED
;
6155 nfs4_schedule_lease_recovery(server
->nfs_client
);
6159 static int _nfs4_do_setlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*fl
, int recovery_type
)
6161 struct nfs4_lockdata
*data
;
6162 struct rpc_task
*task
;
6163 struct rpc_message msg
= {
6164 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOCK
],
6165 .rpc_cred
= state
->owner
->so_cred
,
6167 struct rpc_task_setup task_setup_data
= {
6168 .rpc_client
= NFS_CLIENT(state
->inode
),
6169 .rpc_message
= &msg
,
6170 .callback_ops
= &nfs4_lock_ops
,
6171 .workqueue
= nfsiod_workqueue
,
6172 .flags
= RPC_TASK_ASYNC
,
6176 dprintk("%s: begin!\n", __func__
);
6177 data
= nfs4_alloc_lockdata(fl
, nfs_file_open_context(fl
->fl_file
),
6178 fl
->fl_u
.nfs4_fl
.owner
,
6179 recovery_type
== NFS_LOCK_NEW
? GFP_KERNEL
: GFP_NOFS
);
6183 data
->arg
.block
= 1;
6184 nfs4_init_sequence(&data
->arg
.seq_args
, &data
->res
.seq_res
, 1);
6185 msg
.rpc_argp
= &data
->arg
;
6186 msg
.rpc_resp
= &data
->res
;
6187 task_setup_data
.callback_data
= data
;
6188 if (recovery_type
> NFS_LOCK_NEW
) {
6189 if (recovery_type
== NFS_LOCK_RECLAIM
)
6190 data
->arg
.reclaim
= NFS_LOCK_RECLAIM
;
6191 nfs4_set_sequence_privileged(&data
->arg
.seq_args
);
6193 data
->arg
.new_lock
= 1;
6194 task
= rpc_run_task(&task_setup_data
);
6196 return PTR_ERR(task
);
6197 ret
= nfs4_wait_for_completion_rpc_task(task
);
6199 ret
= data
->rpc_status
;
6201 nfs4_handle_setlk_error(data
->server
, data
->lsp
,
6202 data
->arg
.new_lock_owner
, ret
);
6204 data
->cancelled
= 1;
6206 dprintk("%s: done, ret = %d!\n", __func__
, ret
);
6207 trace_nfs4_set_lock(fl
, state
, &data
->res
.stateid
, cmd
, ret
);
6211 static int nfs4_lock_reclaim(struct nfs4_state
*state
, struct file_lock
*request
)
6213 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
6214 struct nfs4_exception exception
= {
6215 .inode
= state
->inode
,
6220 /* Cache the lock if possible... */
6221 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) != 0)
6223 err
= _nfs4_do_setlk(state
, F_SETLK
, request
, NFS_LOCK_RECLAIM
);
6224 if (err
!= -NFS4ERR_DELAY
)
6226 nfs4_handle_exception(server
, err
, &exception
);
6227 } while (exception
.retry
);
6231 static int nfs4_lock_expired(struct nfs4_state
*state
, struct file_lock
*request
)
6233 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
6234 struct nfs4_exception exception
= {
6235 .inode
= state
->inode
,
6239 err
= nfs4_set_lock_state(state
, request
);
6242 if (!recover_lost_locks
) {
6243 set_bit(NFS_LOCK_LOST
, &request
->fl_u
.nfs4_fl
.owner
->ls_flags
);
6247 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) != 0)
6249 err
= _nfs4_do_setlk(state
, F_SETLK
, request
, NFS_LOCK_EXPIRED
);
6253 case -NFS4ERR_GRACE
:
6254 case -NFS4ERR_DELAY
:
6255 nfs4_handle_exception(server
, err
, &exception
);
6258 } while (exception
.retry
);
6263 #if defined(CONFIG_NFS_V4_1)
6264 static int nfs41_lock_expired(struct nfs4_state
*state
, struct file_lock
*request
)
6266 struct nfs4_lock_state
*lsp
;
6269 status
= nfs4_set_lock_state(state
, request
);
6272 lsp
= request
->fl_u
.nfs4_fl
.owner
;
6273 if (test_bit(NFS_LOCK_INITIALIZED
, &lsp
->ls_flags
) ||
6274 test_bit(NFS_LOCK_LOST
, &lsp
->ls_flags
))
6276 status
= nfs4_lock_expired(state
, request
);
6281 static int _nfs4_proc_setlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
6283 struct nfs_inode
*nfsi
= NFS_I(state
->inode
);
6284 struct nfs4_state_owner
*sp
= state
->owner
;
6285 unsigned char fl_flags
= request
->fl_flags
;
6288 request
->fl_flags
|= FL_ACCESS
;
6289 status
= locks_lock_inode_wait(state
->inode
, request
);
6292 mutex_lock(&sp
->so_delegreturn_mutex
);
6293 down_read(&nfsi
->rwsem
);
6294 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
)) {
6295 /* Yes: cache locks! */
6296 /* ...but avoid races with delegation recall... */
6297 request
->fl_flags
= fl_flags
& ~FL_SLEEP
;
6298 status
= locks_lock_inode_wait(state
->inode
, request
);
6299 up_read(&nfsi
->rwsem
);
6300 mutex_unlock(&sp
->so_delegreturn_mutex
);
6303 up_read(&nfsi
->rwsem
);
6304 mutex_unlock(&sp
->so_delegreturn_mutex
);
6305 status
= _nfs4_do_setlk(state
, cmd
, request
, NFS_LOCK_NEW
);
6307 request
->fl_flags
= fl_flags
;
6311 static int nfs4_proc_setlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
6313 struct nfs4_exception exception
= {
6315 .inode
= state
->inode
,
6320 err
= _nfs4_proc_setlk(state
, cmd
, request
);
6321 if (err
== -NFS4ERR_DENIED
)
6323 err
= nfs4_handle_exception(NFS_SERVER(state
->inode
),
6325 } while (exception
.retry
);
6329 #define NFS4_LOCK_MINTIMEOUT (1 * HZ)
6330 #define NFS4_LOCK_MAXTIMEOUT (30 * HZ)
6333 nfs4_retry_setlk_simple(struct nfs4_state
*state
, int cmd
,
6334 struct file_lock
*request
)
6336 int status
= -ERESTARTSYS
;
6337 unsigned long timeout
= NFS4_LOCK_MINTIMEOUT
;
6339 while(!signalled()) {
6340 status
= nfs4_proc_setlk(state
, cmd
, request
);
6341 if ((status
!= -EAGAIN
) || IS_SETLK(cmd
))
6343 freezable_schedule_timeout_interruptible(timeout
);
6345 timeout
= min_t(unsigned long, NFS4_LOCK_MAXTIMEOUT
, timeout
);
6346 status
= -ERESTARTSYS
;
6351 #ifdef CONFIG_NFS_V4_1
6352 struct nfs4_lock_waiter
{
6353 struct task_struct
*task
;
6354 struct inode
*inode
;
6355 struct nfs_lowner
*owner
;
6360 nfs4_wake_lock_waiter(wait_queue_t
*wait
, unsigned int mode
, int flags
, void *key
)
6363 struct cb_notify_lock_args
*cbnl
= key
;
6364 struct nfs4_lock_waiter
*waiter
= wait
->private;
6365 struct nfs_lowner
*lowner
= &cbnl
->cbnl_owner
,
6366 *wowner
= waiter
->owner
;
6368 /* Only wake if the callback was for the same owner */
6369 if (lowner
->clientid
!= wowner
->clientid
||
6370 lowner
->id
!= wowner
->id
||
6371 lowner
->s_dev
!= wowner
->s_dev
)
6374 /* Make sure it's for the right inode */
6375 if (nfs_compare_fh(NFS_FH(waiter
->inode
), &cbnl
->cbnl_fh
))
6378 waiter
->notified
= true;
6380 /* override "private" so we can use default_wake_function */
6381 wait
->private = waiter
->task
;
6382 ret
= autoremove_wake_function(wait
, mode
, flags
, key
);
6383 wait
->private = waiter
;
6388 nfs4_retry_setlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
6390 int status
= -ERESTARTSYS
;
6391 unsigned long flags
;
6392 struct nfs4_lock_state
*lsp
= request
->fl_u
.nfs4_fl
.owner
;
6393 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
6394 struct nfs_client
*clp
= server
->nfs_client
;
6395 wait_queue_head_t
*q
= &clp
->cl_lock_waitq
;
6396 struct nfs_lowner owner
= { .clientid
= clp
->cl_clientid
,
6397 .id
= lsp
->ls_seqid
.owner_id
,
6398 .s_dev
= server
->s_dev
};
6399 struct nfs4_lock_waiter waiter
= { .task
= current
,
6400 .inode
= state
->inode
,
6402 .notified
= false };
6405 /* Don't bother with waitqueue if we don't expect a callback */
6406 if (!test_bit(NFS_STATE_MAY_NOTIFY_LOCK
, &state
->flags
))
6407 return nfs4_retry_setlk_simple(state
, cmd
, request
);
6410 wait
.private = &waiter
;
6411 wait
.func
= nfs4_wake_lock_waiter
;
6412 add_wait_queue(q
, &wait
);
6414 while(!signalled()) {
6415 status
= nfs4_proc_setlk(state
, cmd
, request
);
6416 if ((status
!= -EAGAIN
) || IS_SETLK(cmd
))
6419 status
= -ERESTARTSYS
;
6420 spin_lock_irqsave(&q
->lock
, flags
);
6421 if (waiter
.notified
) {
6422 spin_unlock_irqrestore(&q
->lock
, flags
);
6425 set_current_state(TASK_INTERRUPTIBLE
);
6426 spin_unlock_irqrestore(&q
->lock
, flags
);
6428 freezable_schedule_timeout_interruptible(NFS4_LOCK_MAXTIMEOUT
);
6431 finish_wait(q
, &wait
);
6434 #else /* !CONFIG_NFS_V4_1 */
6436 nfs4_retry_setlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
6438 return nfs4_retry_setlk_simple(state
, cmd
, request
);
6443 nfs4_proc_lock(struct file
*filp
, int cmd
, struct file_lock
*request
)
6445 struct nfs_open_context
*ctx
;
6446 struct nfs4_state
*state
;
6449 /* verify open state */
6450 ctx
= nfs_file_open_context(filp
);
6453 if (request
->fl_start
< 0 || request
->fl_end
< 0)
6456 if (IS_GETLK(cmd
)) {
6458 return nfs4_proc_getlk(state
, F_GETLK
, request
);
6462 if (!(IS_SETLK(cmd
) || IS_SETLKW(cmd
)))
6465 if (request
->fl_type
== F_UNLCK
) {
6467 return nfs4_proc_unlck(state
, cmd
, request
);
6474 if ((request
->fl_flags
& FL_POSIX
) &&
6475 !test_bit(NFS_STATE_POSIX_LOCKS
, &state
->flags
))
6479 * Don't rely on the VFS having checked the file open mode,
6480 * since it won't do this for flock() locks.
6482 switch (request
->fl_type
) {
6484 if (!(filp
->f_mode
& FMODE_READ
))
6488 if (!(filp
->f_mode
& FMODE_WRITE
))
6492 status
= nfs4_set_lock_state(state
, request
);
6496 return nfs4_retry_setlk(state
, cmd
, request
);
6499 int nfs4_lock_delegation_recall(struct file_lock
*fl
, struct nfs4_state
*state
, const nfs4_stateid
*stateid
)
6501 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
6504 err
= nfs4_set_lock_state(state
, fl
);
6507 err
= _nfs4_do_setlk(state
, F_SETLK
, fl
, NFS_LOCK_NEW
);
6508 return nfs4_handle_delegation_recall_error(server
, state
, stateid
, err
);
6511 struct nfs_release_lockowner_data
{
6512 struct nfs4_lock_state
*lsp
;
6513 struct nfs_server
*server
;
6514 struct nfs_release_lockowner_args args
;
6515 struct nfs_release_lockowner_res res
;
6516 unsigned long timestamp
;
6519 static void nfs4_release_lockowner_prepare(struct rpc_task
*task
, void *calldata
)
6521 struct nfs_release_lockowner_data
*data
= calldata
;
6522 struct nfs_server
*server
= data
->server
;
6523 nfs40_setup_sequence(server
->nfs_client
->cl_slot_tbl
,
6524 &data
->args
.seq_args
, &data
->res
.seq_res
, task
);
6525 data
->args
.lock_owner
.clientid
= server
->nfs_client
->cl_clientid
;
6526 data
->timestamp
= jiffies
;
6529 static void nfs4_release_lockowner_done(struct rpc_task
*task
, void *calldata
)
6531 struct nfs_release_lockowner_data
*data
= calldata
;
6532 struct nfs_server
*server
= data
->server
;
6534 nfs40_sequence_done(task
, &data
->res
.seq_res
);
6536 switch (task
->tk_status
) {
6538 renew_lease(server
, data
->timestamp
);
6540 case -NFS4ERR_STALE_CLIENTID
:
6541 case -NFS4ERR_EXPIRED
:
6542 nfs4_schedule_lease_recovery(server
->nfs_client
);
6544 case -NFS4ERR_LEASE_MOVED
:
6545 case -NFS4ERR_DELAY
:
6546 if (nfs4_async_handle_error(task
, server
,
6547 NULL
, NULL
) == -EAGAIN
)
6548 rpc_restart_call_prepare(task
);
6552 static void nfs4_release_lockowner_release(void *calldata
)
6554 struct nfs_release_lockowner_data
*data
= calldata
;
6555 nfs4_free_lock_state(data
->server
, data
->lsp
);
6559 static const struct rpc_call_ops nfs4_release_lockowner_ops
= {
6560 .rpc_call_prepare
= nfs4_release_lockowner_prepare
,
6561 .rpc_call_done
= nfs4_release_lockowner_done
,
6562 .rpc_release
= nfs4_release_lockowner_release
,
6566 nfs4_release_lockowner(struct nfs_server
*server
, struct nfs4_lock_state
*lsp
)
6568 struct nfs_release_lockowner_data
*data
;
6569 struct rpc_message msg
= {
6570 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RELEASE_LOCKOWNER
],
6573 if (server
->nfs_client
->cl_mvops
->minor_version
!= 0)
6576 data
= kmalloc(sizeof(*data
), GFP_NOFS
);
6580 data
->server
= server
;
6581 data
->args
.lock_owner
.clientid
= server
->nfs_client
->cl_clientid
;
6582 data
->args
.lock_owner
.id
= lsp
->ls_seqid
.owner_id
;
6583 data
->args
.lock_owner
.s_dev
= server
->s_dev
;
6585 msg
.rpc_argp
= &data
->args
;
6586 msg
.rpc_resp
= &data
->res
;
6587 nfs4_init_sequence(&data
->args
.seq_args
, &data
->res
.seq_res
, 0);
6588 rpc_call_async(server
->client
, &msg
, 0, &nfs4_release_lockowner_ops
, data
);
6591 #define XATTR_NAME_NFSV4_ACL "system.nfs4_acl"
6593 static int nfs4_xattr_set_nfs4_acl(const struct xattr_handler
*handler
,
6594 struct dentry
*unused
, struct inode
*inode
,
6595 const char *key
, const void *buf
,
6596 size_t buflen
, int flags
)
6598 return nfs4_proc_set_acl(inode
, buf
, buflen
);
6601 static int nfs4_xattr_get_nfs4_acl(const struct xattr_handler
*handler
,
6602 struct dentry
*unused
, struct inode
*inode
,
6603 const char *key
, void *buf
, size_t buflen
)
6605 return nfs4_proc_get_acl(inode
, buf
, buflen
);
6608 static bool nfs4_xattr_list_nfs4_acl(struct dentry
*dentry
)
6610 return nfs4_server_supports_acls(NFS_SERVER(d_inode(dentry
)));
6613 #ifdef CONFIG_NFS_V4_SECURITY_LABEL
6615 static int nfs4_xattr_set_nfs4_label(const struct xattr_handler
*handler
,
6616 struct dentry
*unused
, struct inode
*inode
,
6617 const char *key
, const void *buf
,
6618 size_t buflen
, int flags
)
6620 if (security_ismaclabel(key
))
6621 return nfs4_set_security_label(inode
, buf
, buflen
);
6626 static int nfs4_xattr_get_nfs4_label(const struct xattr_handler
*handler
,
6627 struct dentry
*unused
, struct inode
*inode
,
6628 const char *key
, void *buf
, size_t buflen
)
6630 if (security_ismaclabel(key
))
6631 return nfs4_get_security_label(inode
, buf
, buflen
);
6636 nfs4_listxattr_nfs4_label(struct inode
*inode
, char *list
, size_t list_len
)
6640 if (nfs_server_capable(inode
, NFS_CAP_SECURITY_LABEL
)) {
6641 len
= security_inode_listsecurity(inode
, list
, list_len
);
6642 if (list_len
&& len
> list_len
)
6648 static const struct xattr_handler nfs4_xattr_nfs4_label_handler
= {
6649 .prefix
= XATTR_SECURITY_PREFIX
,
6650 .get
= nfs4_xattr_get_nfs4_label
,
6651 .set
= nfs4_xattr_set_nfs4_label
,
6657 nfs4_listxattr_nfs4_label(struct inode
*inode
, char *list
, size_t list_len
)
6665 * nfs_fhget will use either the mounted_on_fileid or the fileid
6667 static void nfs_fixup_referral_attributes(struct nfs_fattr
*fattr
)
6669 if (!(((fattr
->valid
& NFS_ATTR_FATTR_MOUNTED_ON_FILEID
) ||
6670 (fattr
->valid
& NFS_ATTR_FATTR_FILEID
)) &&
6671 (fattr
->valid
& NFS_ATTR_FATTR_FSID
) &&
6672 (fattr
->valid
& NFS_ATTR_FATTR_V4_LOCATIONS
)))
6675 fattr
->valid
|= NFS_ATTR_FATTR_TYPE
| NFS_ATTR_FATTR_MODE
|
6676 NFS_ATTR_FATTR_NLINK
| NFS_ATTR_FATTR_V4_REFERRAL
;
6677 fattr
->mode
= S_IFDIR
| S_IRUGO
| S_IXUGO
;
6681 static int _nfs4_proc_fs_locations(struct rpc_clnt
*client
, struct inode
*dir
,
6682 const struct qstr
*name
,
6683 struct nfs4_fs_locations
*fs_locations
,
6686 struct nfs_server
*server
= NFS_SERVER(dir
);
6688 [0] = FATTR4_WORD0_FSID
| FATTR4_WORD0_FS_LOCATIONS
,
6690 struct nfs4_fs_locations_arg args
= {
6691 .dir_fh
= NFS_FH(dir
),
6696 struct nfs4_fs_locations_res res
= {
6697 .fs_locations
= fs_locations
,
6699 struct rpc_message msg
= {
6700 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_FS_LOCATIONS
],
6706 dprintk("%s: start\n", __func__
);
6708 /* Ask for the fileid of the absent filesystem if mounted_on_fileid
6709 * is not supported */
6710 if (NFS_SERVER(dir
)->attr_bitmask
[1] & FATTR4_WORD1_MOUNTED_ON_FILEID
)
6711 bitmask
[1] |= FATTR4_WORD1_MOUNTED_ON_FILEID
;
6713 bitmask
[0] |= FATTR4_WORD0_FILEID
;
6715 nfs_fattr_init(&fs_locations
->fattr
);
6716 fs_locations
->server
= server
;
6717 fs_locations
->nlocations
= 0;
6718 status
= nfs4_call_sync(client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
6719 dprintk("%s: returned status = %d\n", __func__
, status
);
6723 int nfs4_proc_fs_locations(struct rpc_clnt
*client
, struct inode
*dir
,
6724 const struct qstr
*name
,
6725 struct nfs4_fs_locations
*fs_locations
,
6728 struct nfs4_exception exception
= { };
6731 err
= _nfs4_proc_fs_locations(client
, dir
, name
,
6732 fs_locations
, page
);
6733 trace_nfs4_get_fs_locations(dir
, name
, err
);
6734 err
= nfs4_handle_exception(NFS_SERVER(dir
), err
,
6736 } while (exception
.retry
);
6741 * This operation also signals the server that this client is
6742 * performing migration recovery. The server can stop returning
6743 * NFS4ERR_LEASE_MOVED to this client. A RENEW operation is
6744 * appended to this compound to identify the client ID which is
6745 * performing recovery.
6747 static int _nfs40_proc_get_locations(struct inode
*inode
,
6748 struct nfs4_fs_locations
*locations
,
6749 struct page
*page
, struct rpc_cred
*cred
)
6751 struct nfs_server
*server
= NFS_SERVER(inode
);
6752 struct rpc_clnt
*clnt
= server
->client
;
6754 [0] = FATTR4_WORD0_FSID
| FATTR4_WORD0_FS_LOCATIONS
,
6756 struct nfs4_fs_locations_arg args
= {
6757 .clientid
= server
->nfs_client
->cl_clientid
,
6758 .fh
= NFS_FH(inode
),
6761 .migration
= 1, /* skip LOOKUP */
6762 .renew
= 1, /* append RENEW */
6764 struct nfs4_fs_locations_res res
= {
6765 .fs_locations
= locations
,
6769 struct rpc_message msg
= {
6770 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_FS_LOCATIONS
],
6775 unsigned long now
= jiffies
;
6778 nfs_fattr_init(&locations
->fattr
);
6779 locations
->server
= server
;
6780 locations
->nlocations
= 0;
6782 nfs4_init_sequence(&args
.seq_args
, &res
.seq_res
, 0);
6783 nfs4_set_sequence_privileged(&args
.seq_args
);
6784 status
= nfs4_call_sync_sequence(clnt
, server
, &msg
,
6785 &args
.seq_args
, &res
.seq_res
);
6789 renew_lease(server
, now
);
6793 #ifdef CONFIG_NFS_V4_1
6796 * This operation also signals the server that this client is
6797 * performing migration recovery. The server can stop asserting
6798 * SEQ4_STATUS_LEASE_MOVED for this client. The client ID
6799 * performing this operation is identified in the SEQUENCE
6800 * operation in this compound.
6802 * When the client supports GETATTR(fs_locations_info), it can
6803 * be plumbed in here.
6805 static int _nfs41_proc_get_locations(struct inode
*inode
,
6806 struct nfs4_fs_locations
*locations
,
6807 struct page
*page
, struct rpc_cred
*cred
)
6809 struct nfs_server
*server
= NFS_SERVER(inode
);
6810 struct rpc_clnt
*clnt
= server
->client
;
6812 [0] = FATTR4_WORD0_FSID
| FATTR4_WORD0_FS_LOCATIONS
,
6814 struct nfs4_fs_locations_arg args
= {
6815 .fh
= NFS_FH(inode
),
6818 .migration
= 1, /* skip LOOKUP */
6820 struct nfs4_fs_locations_res res
= {
6821 .fs_locations
= locations
,
6824 struct rpc_message msg
= {
6825 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_FS_LOCATIONS
],
6832 nfs_fattr_init(&locations
->fattr
);
6833 locations
->server
= server
;
6834 locations
->nlocations
= 0;
6836 nfs4_init_sequence(&args
.seq_args
, &res
.seq_res
, 0);
6837 nfs4_set_sequence_privileged(&args
.seq_args
);
6838 status
= nfs4_call_sync_sequence(clnt
, server
, &msg
,
6839 &args
.seq_args
, &res
.seq_res
);
6840 if (status
== NFS4_OK
&&
6841 res
.seq_res
.sr_status_flags
& SEQ4_STATUS_LEASE_MOVED
)
6842 status
= -NFS4ERR_LEASE_MOVED
;
6846 #endif /* CONFIG_NFS_V4_1 */
6849 * nfs4_proc_get_locations - discover locations for a migrated FSID
6850 * @inode: inode on FSID that is migrating
6851 * @locations: result of query
6853 * @cred: credential to use for this operation
6855 * Returns NFS4_OK on success, a negative NFS4ERR status code if the
6856 * operation failed, or a negative errno if a local error occurred.
6858 * On success, "locations" is filled in, but if the server has
6859 * no locations information, NFS_ATTR_FATTR_V4_LOCATIONS is not
6862 * -NFS4ERR_LEASE_MOVED is returned if the server still has leases
6863 * from this client that require migration recovery.
6865 int nfs4_proc_get_locations(struct inode
*inode
,
6866 struct nfs4_fs_locations
*locations
,
6867 struct page
*page
, struct rpc_cred
*cred
)
6869 struct nfs_server
*server
= NFS_SERVER(inode
);
6870 struct nfs_client
*clp
= server
->nfs_client
;
6871 const struct nfs4_mig_recovery_ops
*ops
=
6872 clp
->cl_mvops
->mig_recovery_ops
;
6873 struct nfs4_exception exception
= { };
6876 dprintk("%s: FSID %llx:%llx on \"%s\"\n", __func__
,
6877 (unsigned long long)server
->fsid
.major
,
6878 (unsigned long long)server
->fsid
.minor
,
6880 nfs_display_fhandle(NFS_FH(inode
), __func__
);
6883 status
= ops
->get_locations(inode
, locations
, page
, cred
);
6884 if (status
!= -NFS4ERR_DELAY
)
6886 nfs4_handle_exception(server
, status
, &exception
);
6887 } while (exception
.retry
);
6892 * This operation also signals the server that this client is
6893 * performing "lease moved" recovery. The server can stop
6894 * returning NFS4ERR_LEASE_MOVED to this client. A RENEW operation
6895 * is appended to this compound to identify the client ID which is
6896 * performing recovery.
6898 static int _nfs40_proc_fsid_present(struct inode
*inode
, struct rpc_cred
*cred
)
6900 struct nfs_server
*server
= NFS_SERVER(inode
);
6901 struct nfs_client
*clp
= NFS_SERVER(inode
)->nfs_client
;
6902 struct rpc_clnt
*clnt
= server
->client
;
6903 struct nfs4_fsid_present_arg args
= {
6904 .fh
= NFS_FH(inode
),
6905 .clientid
= clp
->cl_clientid
,
6906 .renew
= 1, /* append RENEW */
6908 struct nfs4_fsid_present_res res
= {
6911 struct rpc_message msg
= {
6912 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_FSID_PRESENT
],
6917 unsigned long now
= jiffies
;
6920 res
.fh
= nfs_alloc_fhandle();
6924 nfs4_init_sequence(&args
.seq_args
, &res
.seq_res
, 0);
6925 nfs4_set_sequence_privileged(&args
.seq_args
);
6926 status
= nfs4_call_sync_sequence(clnt
, server
, &msg
,
6927 &args
.seq_args
, &res
.seq_res
);
6928 nfs_free_fhandle(res
.fh
);
6932 do_renew_lease(clp
, now
);
6936 #ifdef CONFIG_NFS_V4_1
6939 * This operation also signals the server that this client is
6940 * performing "lease moved" recovery. The server can stop asserting
6941 * SEQ4_STATUS_LEASE_MOVED for this client. The client ID performing
6942 * this operation is identified in the SEQUENCE operation in this
6945 static int _nfs41_proc_fsid_present(struct inode
*inode
, struct rpc_cred
*cred
)
6947 struct nfs_server
*server
= NFS_SERVER(inode
);
6948 struct rpc_clnt
*clnt
= server
->client
;
6949 struct nfs4_fsid_present_arg args
= {
6950 .fh
= NFS_FH(inode
),
6952 struct nfs4_fsid_present_res res
= {
6954 struct rpc_message msg
= {
6955 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_FSID_PRESENT
],
6962 res
.fh
= nfs_alloc_fhandle();
6966 nfs4_init_sequence(&args
.seq_args
, &res
.seq_res
, 0);
6967 nfs4_set_sequence_privileged(&args
.seq_args
);
6968 status
= nfs4_call_sync_sequence(clnt
, server
, &msg
,
6969 &args
.seq_args
, &res
.seq_res
);
6970 nfs_free_fhandle(res
.fh
);
6971 if (status
== NFS4_OK
&&
6972 res
.seq_res
.sr_status_flags
& SEQ4_STATUS_LEASE_MOVED
)
6973 status
= -NFS4ERR_LEASE_MOVED
;
6977 #endif /* CONFIG_NFS_V4_1 */
6980 * nfs4_proc_fsid_present - Is this FSID present or absent on server?
6981 * @inode: inode on FSID to check
6982 * @cred: credential to use for this operation
6984 * Server indicates whether the FSID is present, moved, or not
6985 * recognized. This operation is necessary to clear a LEASE_MOVED
6986 * condition for this client ID.
6988 * Returns NFS4_OK if the FSID is present on this server,
6989 * -NFS4ERR_MOVED if the FSID is no longer present, a negative
6990 * NFS4ERR code if some error occurred on the server, or a
6991 * negative errno if a local failure occurred.
6993 int nfs4_proc_fsid_present(struct inode
*inode
, struct rpc_cred
*cred
)
6995 struct nfs_server
*server
= NFS_SERVER(inode
);
6996 struct nfs_client
*clp
= server
->nfs_client
;
6997 const struct nfs4_mig_recovery_ops
*ops
=
6998 clp
->cl_mvops
->mig_recovery_ops
;
6999 struct nfs4_exception exception
= { };
7002 dprintk("%s: FSID %llx:%llx on \"%s\"\n", __func__
,
7003 (unsigned long long)server
->fsid
.major
,
7004 (unsigned long long)server
->fsid
.minor
,
7006 nfs_display_fhandle(NFS_FH(inode
), __func__
);
7009 status
= ops
->fsid_present(inode
, cred
);
7010 if (status
!= -NFS4ERR_DELAY
)
7012 nfs4_handle_exception(server
, status
, &exception
);
7013 } while (exception
.retry
);
7018 * If 'use_integrity' is true and the state managment nfs_client
7019 * cl_rpcclient is using krb5i/p, use the integrity protected cl_rpcclient
7020 * and the machine credential as per RFC3530bis and RFC5661 Security
7021 * Considerations sections. Otherwise, just use the user cred with the
7022 * filesystem's rpc_client.
7024 static int _nfs4_proc_secinfo(struct inode
*dir
, const struct qstr
*name
, struct nfs4_secinfo_flavors
*flavors
, bool use_integrity
)
7027 struct nfs4_secinfo_arg args
= {
7028 .dir_fh
= NFS_FH(dir
),
7031 struct nfs4_secinfo_res res
= {
7034 struct rpc_message msg
= {
7035 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SECINFO
],
7039 struct rpc_clnt
*clnt
= NFS_SERVER(dir
)->client
;
7040 struct rpc_cred
*cred
= NULL
;
7042 if (use_integrity
) {
7043 clnt
= NFS_SERVER(dir
)->nfs_client
->cl_rpcclient
;
7044 cred
= nfs4_get_clid_cred(NFS_SERVER(dir
)->nfs_client
);
7045 msg
.rpc_cred
= cred
;
7048 dprintk("NFS call secinfo %s\n", name
->name
);
7050 nfs4_state_protect(NFS_SERVER(dir
)->nfs_client
,
7051 NFS_SP4_MACH_CRED_SECINFO
, &clnt
, &msg
);
7053 status
= nfs4_call_sync(clnt
, NFS_SERVER(dir
), &msg
, &args
.seq_args
,
7055 dprintk("NFS reply secinfo: %d\n", status
);
7063 int nfs4_proc_secinfo(struct inode
*dir
, const struct qstr
*name
,
7064 struct nfs4_secinfo_flavors
*flavors
)
7066 struct nfs4_exception exception
= { };
7069 err
= -NFS4ERR_WRONGSEC
;
7071 /* try to use integrity protection with machine cred */
7072 if (_nfs4_is_integrity_protected(NFS_SERVER(dir
)->nfs_client
))
7073 err
= _nfs4_proc_secinfo(dir
, name
, flavors
, true);
7076 * if unable to use integrity protection, or SECINFO with
7077 * integrity protection returns NFS4ERR_WRONGSEC (which is
7078 * disallowed by spec, but exists in deployed servers) use
7079 * the current filesystem's rpc_client and the user cred.
7081 if (err
== -NFS4ERR_WRONGSEC
)
7082 err
= _nfs4_proc_secinfo(dir
, name
, flavors
, false);
7084 trace_nfs4_secinfo(dir
, name
, err
);
7085 err
= nfs4_handle_exception(NFS_SERVER(dir
), err
,
7087 } while (exception
.retry
);
7091 #ifdef CONFIG_NFS_V4_1
7093 * Check the exchange flags returned by the server for invalid flags, having
7094 * both PNFS and NON_PNFS flags set, and not having one of NON_PNFS, PNFS, or
7097 static int nfs4_check_cl_exchange_flags(u32 flags
)
7099 if (flags
& ~EXCHGID4_FLAG_MASK_R
)
7101 if ((flags
& EXCHGID4_FLAG_USE_PNFS_MDS
) &&
7102 (flags
& EXCHGID4_FLAG_USE_NON_PNFS
))
7104 if (!(flags
& (EXCHGID4_FLAG_MASK_PNFS
)))
7108 return -NFS4ERR_INVAL
;
7112 nfs41_same_server_scope(struct nfs41_server_scope
*a
,
7113 struct nfs41_server_scope
*b
)
7115 if (a
->server_scope_sz
== b
->server_scope_sz
&&
7116 memcmp(a
->server_scope
, b
->server_scope
, a
->server_scope_sz
) == 0)
7123 nfs4_bind_one_conn_to_session_done(struct rpc_task
*task
, void *calldata
)
7127 static const struct rpc_call_ops nfs4_bind_one_conn_to_session_ops
= {
7128 .rpc_call_done
= &nfs4_bind_one_conn_to_session_done
,
7132 * nfs4_proc_bind_one_conn_to_session()
7134 * The 4.1 client currently uses the same TCP connection for the
7135 * fore and backchannel.
7138 int nfs4_proc_bind_one_conn_to_session(struct rpc_clnt
*clnt
,
7139 struct rpc_xprt
*xprt
,
7140 struct nfs_client
*clp
,
7141 struct rpc_cred
*cred
)
7144 struct nfs41_bind_conn_to_session_args args
= {
7146 .dir
= NFS4_CDFC4_FORE_OR_BOTH
,
7148 struct nfs41_bind_conn_to_session_res res
;
7149 struct rpc_message msg
= {
7151 &nfs4_procedures
[NFSPROC4_CLNT_BIND_CONN_TO_SESSION
],
7156 struct rpc_task_setup task_setup_data
= {
7159 .callback_ops
= &nfs4_bind_one_conn_to_session_ops
,
7160 .rpc_message
= &msg
,
7161 .flags
= RPC_TASK_TIMEOUT
,
7163 struct rpc_task
*task
;
7165 dprintk("--> %s\n", __func__
);
7167 nfs4_copy_sessionid(&args
.sessionid
, &clp
->cl_session
->sess_id
);
7168 if (!(clp
->cl_session
->flags
& SESSION4_BACK_CHAN
))
7169 args
.dir
= NFS4_CDFC4_FORE
;
7171 /* Do not set the backchannel flag unless this is clnt->cl_xprt */
7172 if (xprt
!= rcu_access_pointer(clnt
->cl_xprt
))
7173 args
.dir
= NFS4_CDFC4_FORE
;
7175 task
= rpc_run_task(&task_setup_data
);
7176 if (!IS_ERR(task
)) {
7177 status
= task
->tk_status
;
7180 status
= PTR_ERR(task
);
7181 trace_nfs4_bind_conn_to_session(clp
, status
);
7183 if (memcmp(res
.sessionid
.data
,
7184 clp
->cl_session
->sess_id
.data
, NFS4_MAX_SESSIONID_LEN
)) {
7185 dprintk("NFS: %s: Session ID mismatch\n", __func__
);
7189 if ((res
.dir
& args
.dir
) != res
.dir
|| res
.dir
== 0) {
7190 dprintk("NFS: %s: Unexpected direction from server\n",
7195 if (res
.use_conn_in_rdma_mode
!= args
.use_conn_in_rdma_mode
) {
7196 dprintk("NFS: %s: Server returned RDMA mode = true\n",
7203 dprintk("<-- %s status= %d\n", __func__
, status
);
7207 struct rpc_bind_conn_calldata
{
7208 struct nfs_client
*clp
;
7209 struct rpc_cred
*cred
;
7213 nfs4_proc_bind_conn_to_session_callback(struct rpc_clnt
*clnt
,
7214 struct rpc_xprt
*xprt
,
7217 struct rpc_bind_conn_calldata
*p
= calldata
;
7219 return nfs4_proc_bind_one_conn_to_session(clnt
, xprt
, p
->clp
, p
->cred
);
7222 int nfs4_proc_bind_conn_to_session(struct nfs_client
*clp
, struct rpc_cred
*cred
)
7224 struct rpc_bind_conn_calldata data
= {
7228 return rpc_clnt_iterate_for_each_xprt(clp
->cl_rpcclient
,
7229 nfs4_proc_bind_conn_to_session_callback
, &data
);
7233 * Minimum set of SP4_MACH_CRED operations from RFC 5661 in the enforce map
7234 * and operations we'd like to see to enable certain features in the allow map
7236 static const struct nfs41_state_protection nfs4_sp4_mach_cred_request
= {
7237 .how
= SP4_MACH_CRED
,
7238 .enforce
.u
.words
= {
7239 [1] = 1 << (OP_BIND_CONN_TO_SESSION
- 32) |
7240 1 << (OP_EXCHANGE_ID
- 32) |
7241 1 << (OP_CREATE_SESSION
- 32) |
7242 1 << (OP_DESTROY_SESSION
- 32) |
7243 1 << (OP_DESTROY_CLIENTID
- 32)
7246 [0] = 1 << (OP_CLOSE
) |
7247 1 << (OP_OPEN_DOWNGRADE
) |
7249 1 << (OP_DELEGRETURN
) |
7251 [1] = 1 << (OP_SECINFO
- 32) |
7252 1 << (OP_SECINFO_NO_NAME
- 32) |
7253 1 << (OP_LAYOUTRETURN
- 32) |
7254 1 << (OP_TEST_STATEID
- 32) |
7255 1 << (OP_FREE_STATEID
- 32) |
7256 1 << (OP_WRITE
- 32)
7261 * Select the state protection mode for client `clp' given the server results
7262 * from exchange_id in `sp'.
7264 * Returns 0 on success, negative errno otherwise.
7266 static int nfs4_sp4_select_mode(struct nfs_client
*clp
,
7267 struct nfs41_state_protection
*sp
)
7269 static const u32 supported_enforce
[NFS4_OP_MAP_NUM_WORDS
] = {
7270 [1] = 1 << (OP_BIND_CONN_TO_SESSION
- 32) |
7271 1 << (OP_EXCHANGE_ID
- 32) |
7272 1 << (OP_CREATE_SESSION
- 32) |
7273 1 << (OP_DESTROY_SESSION
- 32) |
7274 1 << (OP_DESTROY_CLIENTID
- 32)
7278 if (sp
->how
== SP4_MACH_CRED
) {
7279 /* Print state protect result */
7280 dfprintk(MOUNT
, "Server SP4_MACH_CRED support:\n");
7281 for (i
= 0; i
<= LAST_NFS4_OP
; i
++) {
7282 if (test_bit(i
, sp
->enforce
.u
.longs
))
7283 dfprintk(MOUNT
, " enforce op %d\n", i
);
7284 if (test_bit(i
, sp
->allow
.u
.longs
))
7285 dfprintk(MOUNT
, " allow op %d\n", i
);
7288 /* make sure nothing is on enforce list that isn't supported */
7289 for (i
= 0; i
< NFS4_OP_MAP_NUM_WORDS
; i
++) {
7290 if (sp
->enforce
.u
.words
[i
] & ~supported_enforce
[i
]) {
7291 dfprintk(MOUNT
, "sp4_mach_cred: disabled\n");
7297 * Minimal mode - state operations are allowed to use machine
7298 * credential. Note this already happens by default, so the
7299 * client doesn't have to do anything more than the negotiation.
7301 * NOTE: we don't care if EXCHANGE_ID is in the list -
7302 * we're already using the machine cred for exchange_id
7303 * and will never use a different cred.
7305 if (test_bit(OP_BIND_CONN_TO_SESSION
, sp
->enforce
.u
.longs
) &&
7306 test_bit(OP_CREATE_SESSION
, sp
->enforce
.u
.longs
) &&
7307 test_bit(OP_DESTROY_SESSION
, sp
->enforce
.u
.longs
) &&
7308 test_bit(OP_DESTROY_CLIENTID
, sp
->enforce
.u
.longs
)) {
7309 dfprintk(MOUNT
, "sp4_mach_cred:\n");
7310 dfprintk(MOUNT
, " minimal mode enabled\n");
7311 set_bit(NFS_SP4_MACH_CRED_MINIMAL
, &clp
->cl_sp4_flags
);
7313 dfprintk(MOUNT
, "sp4_mach_cred: disabled\n");
7317 if (test_bit(OP_CLOSE
, sp
->allow
.u
.longs
) &&
7318 test_bit(OP_OPEN_DOWNGRADE
, sp
->allow
.u
.longs
) &&
7319 test_bit(OP_DELEGRETURN
, sp
->allow
.u
.longs
) &&
7320 test_bit(OP_LOCKU
, sp
->allow
.u
.longs
)) {
7321 dfprintk(MOUNT
, " cleanup mode enabled\n");
7322 set_bit(NFS_SP4_MACH_CRED_CLEANUP
, &clp
->cl_sp4_flags
);
7325 if (test_bit(OP_LAYOUTRETURN
, sp
->allow
.u
.longs
)) {
7326 dfprintk(MOUNT
, " pnfs cleanup mode enabled\n");
7327 set_bit(NFS_SP4_MACH_CRED_PNFS_CLEANUP
,
7328 &clp
->cl_sp4_flags
);
7331 if (test_bit(OP_SECINFO
, sp
->allow
.u
.longs
) &&
7332 test_bit(OP_SECINFO_NO_NAME
, sp
->allow
.u
.longs
)) {
7333 dfprintk(MOUNT
, " secinfo mode enabled\n");
7334 set_bit(NFS_SP4_MACH_CRED_SECINFO
, &clp
->cl_sp4_flags
);
7337 if (test_bit(OP_TEST_STATEID
, sp
->allow
.u
.longs
) &&
7338 test_bit(OP_FREE_STATEID
, sp
->allow
.u
.longs
)) {
7339 dfprintk(MOUNT
, " stateid mode enabled\n");
7340 set_bit(NFS_SP4_MACH_CRED_STATEID
, &clp
->cl_sp4_flags
);
7343 if (test_bit(OP_WRITE
, sp
->allow
.u
.longs
)) {
7344 dfprintk(MOUNT
, " write mode enabled\n");
7345 set_bit(NFS_SP4_MACH_CRED_WRITE
, &clp
->cl_sp4_flags
);
7348 if (test_bit(OP_COMMIT
, sp
->allow
.u
.longs
)) {
7349 dfprintk(MOUNT
, " commit mode enabled\n");
7350 set_bit(NFS_SP4_MACH_CRED_COMMIT
, &clp
->cl_sp4_flags
);
7357 struct nfs41_exchange_id_data
{
7358 struct nfs41_exchange_id_res res
;
7359 struct nfs41_exchange_id_args args
;
7360 struct rpc_xprt
*xprt
;
7364 static void nfs4_exchange_id_done(struct rpc_task
*task
, void *data
)
7366 struct nfs41_exchange_id_data
*cdata
=
7367 (struct nfs41_exchange_id_data
*)data
;
7368 struct nfs_client
*clp
= cdata
->args
.client
;
7369 int status
= task
->tk_status
;
7371 trace_nfs4_exchange_id(clp
, status
);
7374 status
= nfs4_check_cl_exchange_flags(cdata
->res
.flags
);
7376 if (cdata
->xprt
&& status
== 0) {
7377 status
= nfs4_detect_session_trunking(clp
, &cdata
->res
,
7383 status
= nfs4_sp4_select_mode(clp
, &cdata
->res
.state_protect
);
7386 clp
->cl_clientid
= cdata
->res
.clientid
;
7387 clp
->cl_exchange_flags
= cdata
->res
.flags
;
7388 /* Client ID is not confirmed */
7389 if (!(cdata
->res
.flags
& EXCHGID4_FLAG_CONFIRMED_R
)) {
7390 clear_bit(NFS4_SESSION_ESTABLISHED
,
7391 &clp
->cl_session
->session_state
);
7392 clp
->cl_seqid
= cdata
->res
.seqid
;
7395 kfree(clp
->cl_serverowner
);
7396 clp
->cl_serverowner
= cdata
->res
.server_owner
;
7397 cdata
->res
.server_owner
= NULL
;
7399 /* use the most recent implementation id */
7400 kfree(clp
->cl_implid
);
7401 clp
->cl_implid
= cdata
->res
.impl_id
;
7402 cdata
->res
.impl_id
= NULL
;
7404 if (clp
->cl_serverscope
!= NULL
&&
7405 !nfs41_same_server_scope(clp
->cl_serverscope
,
7406 cdata
->res
.server_scope
)) {
7407 dprintk("%s: server_scope mismatch detected\n",
7409 set_bit(NFS4CLNT_SERVER_SCOPE_MISMATCH
, &clp
->cl_state
);
7410 kfree(clp
->cl_serverscope
);
7411 clp
->cl_serverscope
= NULL
;
7414 if (clp
->cl_serverscope
== NULL
) {
7415 clp
->cl_serverscope
= cdata
->res
.server_scope
;
7416 cdata
->res
.server_scope
= NULL
;
7418 /* Save the EXCHANGE_ID verifier session trunk tests */
7419 memcpy(clp
->cl_confirm
.data
, cdata
->args
.verifier
->data
,
7420 sizeof(clp
->cl_confirm
.data
));
7423 cdata
->rpc_status
= status
;
7427 static void nfs4_exchange_id_release(void *data
)
7429 struct nfs41_exchange_id_data
*cdata
=
7430 (struct nfs41_exchange_id_data
*)data
;
7432 nfs_put_client(cdata
->args
.client
);
7434 xprt_put(cdata
->xprt
);
7435 rpc_clnt_xprt_switch_put(cdata
->args
.client
->cl_rpcclient
);
7437 kfree(cdata
->res
.impl_id
);
7438 kfree(cdata
->res
.server_scope
);
7439 kfree(cdata
->res
.server_owner
);
7443 static const struct rpc_call_ops nfs4_exchange_id_call_ops
= {
7444 .rpc_call_done
= nfs4_exchange_id_done
,
7445 .rpc_release
= nfs4_exchange_id_release
,
7449 * _nfs4_proc_exchange_id()
7451 * Wrapper for EXCHANGE_ID operation.
7453 static int _nfs4_proc_exchange_id(struct nfs_client
*clp
, struct rpc_cred
*cred
,
7454 u32 sp4_how
, struct rpc_xprt
*xprt
)
7456 nfs4_verifier verifier
;
7457 struct rpc_message msg
= {
7458 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_EXCHANGE_ID
],
7461 struct rpc_task_setup task_setup_data
= {
7462 .rpc_client
= clp
->cl_rpcclient
,
7463 .callback_ops
= &nfs4_exchange_id_call_ops
,
7464 .rpc_message
= &msg
,
7465 .flags
= RPC_TASK_ASYNC
| RPC_TASK_TIMEOUT
,
7467 struct nfs41_exchange_id_data
*calldata
;
7468 struct rpc_task
*task
;
7471 if (!atomic_inc_not_zero(&clp
->cl_count
))
7475 calldata
= kzalloc(sizeof(*calldata
), GFP_NOFS
);
7480 nfs4_init_boot_verifier(clp
, &verifier
);
7482 status
= nfs4_init_uniform_client_string(clp
);
7486 dprintk("NFS call exchange_id auth=%s, '%s'\n",
7487 clp
->cl_rpcclient
->cl_auth
->au_ops
->au_name
,
7490 calldata
->res
.server_owner
= kzalloc(sizeof(struct nfs41_server_owner
),
7493 if (unlikely(calldata
->res
.server_owner
== NULL
))
7496 calldata
->res
.server_scope
= kzalloc(sizeof(struct nfs41_server_scope
),
7498 if (unlikely(calldata
->res
.server_scope
== NULL
))
7499 goto out_server_owner
;
7501 calldata
->res
.impl_id
= kzalloc(sizeof(struct nfs41_impl_id
), GFP_NOFS
);
7502 if (unlikely(calldata
->res
.impl_id
== NULL
))
7503 goto out_server_scope
;
7507 calldata
->args
.state_protect
.how
= SP4_NONE
;
7511 calldata
->args
.state_protect
= nfs4_sp4_mach_cred_request
;
7521 calldata
->xprt
= xprt
;
7522 task_setup_data
.rpc_xprt
= xprt
;
7523 task_setup_data
.flags
=
7524 RPC_TASK_SOFT
|RPC_TASK_SOFTCONN
|RPC_TASK_ASYNC
;
7525 calldata
->args
.verifier
= &clp
->cl_confirm
;
7527 calldata
->args
.verifier
= &verifier
;
7529 calldata
->args
.client
= clp
;
7530 #ifdef CONFIG_NFS_V4_1_MIGRATION
7531 calldata
->args
.flags
= EXCHGID4_FLAG_SUPP_MOVED_REFER
|
7532 EXCHGID4_FLAG_BIND_PRINC_STATEID
|
7533 EXCHGID4_FLAG_SUPP_MOVED_MIGR
,
7535 calldata
->args
.flags
= EXCHGID4_FLAG_SUPP_MOVED_REFER
|
7536 EXCHGID4_FLAG_BIND_PRINC_STATEID
,
7538 msg
.rpc_argp
= &calldata
->args
;
7539 msg
.rpc_resp
= &calldata
->res
;
7540 task_setup_data
.callback_data
= calldata
;
7542 task
= rpc_run_task(&task_setup_data
);
7544 status
= PTR_ERR(task
);
7549 status
= rpc_wait_for_completion_task(task
);
7551 status
= calldata
->rpc_status
;
7552 } else /* session trunking test */
7553 status
= calldata
->rpc_status
;
7557 if (clp
->cl_implid
!= NULL
)
7558 dprintk("NFS reply exchange_id: Server Implementation ID: "
7559 "domain: %s, name: %s, date: %llu,%u\n",
7560 clp
->cl_implid
->domain
, clp
->cl_implid
->name
,
7561 clp
->cl_implid
->date
.seconds
,
7562 clp
->cl_implid
->date
.nseconds
);
7563 dprintk("NFS reply exchange_id: %d\n", status
);
7567 kfree(calldata
->res
.impl_id
);
7569 kfree(calldata
->res
.server_scope
);
7571 kfree(calldata
->res
.server_owner
);
7578 * nfs4_proc_exchange_id()
7580 * Returns zero, a negative errno, or a negative NFS4ERR status code.
7582 * Since the clientid has expired, all compounds using sessions
7583 * associated with the stale clientid will be returning
7584 * NFS4ERR_BADSESSION in the sequence operation, and will therefore
7585 * be in some phase of session reset.
7587 * Will attempt to negotiate SP4_MACH_CRED if krb5i / krb5p auth is used.
7589 int nfs4_proc_exchange_id(struct nfs_client
*clp
, struct rpc_cred
*cred
)
7591 rpc_authflavor_t authflavor
= clp
->cl_rpcclient
->cl_auth
->au_flavor
;
7594 /* try SP4_MACH_CRED if krb5i/p */
7595 if (authflavor
== RPC_AUTH_GSS_KRB5I
||
7596 authflavor
== RPC_AUTH_GSS_KRB5P
) {
7597 status
= _nfs4_proc_exchange_id(clp
, cred
, SP4_MACH_CRED
, NULL
);
7603 return _nfs4_proc_exchange_id(clp
, cred
, SP4_NONE
, NULL
);
7607 * nfs4_test_session_trunk
7609 * This is an add_xprt_test() test function called from
7610 * rpc_clnt_setup_test_and_add_xprt.
7612 * The rpc_xprt_switch is referrenced by rpc_clnt_setup_test_and_add_xprt
7613 * and is dereferrenced in nfs4_exchange_id_release
7615 * Upon success, add the new transport to the rpc_clnt
7617 * @clnt: struct rpc_clnt to get new transport
7618 * @xprt: the rpc_xprt to test
7619 * @data: call data for _nfs4_proc_exchange_id.
7621 int nfs4_test_session_trunk(struct rpc_clnt
*clnt
, struct rpc_xprt
*xprt
,
7624 struct nfs4_add_xprt_data
*adata
= (struct nfs4_add_xprt_data
*)data
;
7627 dprintk("--> %s try %s\n", __func__
,
7628 xprt
->address_strings
[RPC_DISPLAY_ADDR
]);
7630 sp4_how
= (adata
->clp
->cl_sp4_flags
== 0 ? SP4_NONE
: SP4_MACH_CRED
);
7632 /* Test connection for session trunking. Async exchange_id call */
7633 return _nfs4_proc_exchange_id(adata
->clp
, adata
->cred
, sp4_how
, xprt
);
7635 EXPORT_SYMBOL_GPL(nfs4_test_session_trunk
);
7637 static int _nfs4_proc_destroy_clientid(struct nfs_client
*clp
,
7638 struct rpc_cred
*cred
)
7640 struct rpc_message msg
= {
7641 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_DESTROY_CLIENTID
],
7647 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
7648 trace_nfs4_destroy_clientid(clp
, status
);
7650 dprintk("NFS: Got error %d from the server %s on "
7651 "DESTROY_CLIENTID.", status
, clp
->cl_hostname
);
7655 static int nfs4_proc_destroy_clientid(struct nfs_client
*clp
,
7656 struct rpc_cred
*cred
)
7661 for (loop
= NFS4_MAX_LOOP_ON_RECOVER
; loop
!= 0; loop
--) {
7662 ret
= _nfs4_proc_destroy_clientid(clp
, cred
);
7664 case -NFS4ERR_DELAY
:
7665 case -NFS4ERR_CLIENTID_BUSY
:
7675 int nfs4_destroy_clientid(struct nfs_client
*clp
)
7677 struct rpc_cred
*cred
;
7680 if (clp
->cl_mvops
->minor_version
< 1)
7682 if (clp
->cl_exchange_flags
== 0)
7684 if (clp
->cl_preserve_clid
)
7686 cred
= nfs4_get_clid_cred(clp
);
7687 ret
= nfs4_proc_destroy_clientid(clp
, cred
);
7692 case -NFS4ERR_STALE_CLIENTID
:
7693 clp
->cl_exchange_flags
= 0;
7699 struct nfs4_get_lease_time_data
{
7700 struct nfs4_get_lease_time_args
*args
;
7701 struct nfs4_get_lease_time_res
*res
;
7702 struct nfs_client
*clp
;
7705 static void nfs4_get_lease_time_prepare(struct rpc_task
*task
,
7708 struct nfs4_get_lease_time_data
*data
=
7709 (struct nfs4_get_lease_time_data
*)calldata
;
7711 dprintk("--> %s\n", __func__
);
7712 /* just setup sequence, do not trigger session recovery
7713 since we're invoked within one */
7714 nfs41_setup_sequence(data
->clp
->cl_session
,
7715 &data
->args
->la_seq_args
,
7716 &data
->res
->lr_seq_res
,
7718 dprintk("<-- %s\n", __func__
);
7722 * Called from nfs4_state_manager thread for session setup, so don't recover
7723 * from sequence operation or clientid errors.
7725 static void nfs4_get_lease_time_done(struct rpc_task
*task
, void *calldata
)
7727 struct nfs4_get_lease_time_data
*data
=
7728 (struct nfs4_get_lease_time_data
*)calldata
;
7730 dprintk("--> %s\n", __func__
);
7731 if (!nfs41_sequence_done(task
, &data
->res
->lr_seq_res
))
7733 switch (task
->tk_status
) {
7734 case -NFS4ERR_DELAY
:
7735 case -NFS4ERR_GRACE
:
7736 dprintk("%s Retry: tk_status %d\n", __func__
, task
->tk_status
);
7737 rpc_delay(task
, NFS4_POLL_RETRY_MIN
);
7738 task
->tk_status
= 0;
7740 case -NFS4ERR_RETRY_UNCACHED_REP
:
7741 rpc_restart_call_prepare(task
);
7744 dprintk("<-- %s\n", __func__
);
7747 static const struct rpc_call_ops nfs4_get_lease_time_ops
= {
7748 .rpc_call_prepare
= nfs4_get_lease_time_prepare
,
7749 .rpc_call_done
= nfs4_get_lease_time_done
,
7752 int nfs4_proc_get_lease_time(struct nfs_client
*clp
, struct nfs_fsinfo
*fsinfo
)
7754 struct rpc_task
*task
;
7755 struct nfs4_get_lease_time_args args
;
7756 struct nfs4_get_lease_time_res res
= {
7757 .lr_fsinfo
= fsinfo
,
7759 struct nfs4_get_lease_time_data data
= {
7764 struct rpc_message msg
= {
7765 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GET_LEASE_TIME
],
7769 struct rpc_task_setup task_setup
= {
7770 .rpc_client
= clp
->cl_rpcclient
,
7771 .rpc_message
= &msg
,
7772 .callback_ops
= &nfs4_get_lease_time_ops
,
7773 .callback_data
= &data
,
7774 .flags
= RPC_TASK_TIMEOUT
,
7778 nfs4_init_sequence(&args
.la_seq_args
, &res
.lr_seq_res
, 0);
7779 nfs4_set_sequence_privileged(&args
.la_seq_args
);
7780 dprintk("--> %s\n", __func__
);
7781 task
= rpc_run_task(&task_setup
);
7784 status
= PTR_ERR(task
);
7786 status
= task
->tk_status
;
7789 dprintk("<-- %s return %d\n", __func__
, status
);
7795 * Initialize the values to be used by the client in CREATE_SESSION
7796 * If nfs4_init_session set the fore channel request and response sizes,
7799 * Set the back channel max_resp_sz_cached to zero to force the client to
7800 * always set csa_cachethis to FALSE because the current implementation
7801 * of the back channel DRC only supports caching the CB_SEQUENCE operation.
7803 static void nfs4_init_channel_attrs(struct nfs41_create_session_args
*args
,
7804 struct rpc_clnt
*clnt
)
7806 unsigned int max_rqst_sz
, max_resp_sz
;
7807 unsigned int max_bc_payload
= rpc_max_bc_payload(clnt
);
7809 max_rqst_sz
= NFS_MAX_FILE_IO_SIZE
+ nfs41_maxwrite_overhead
;
7810 max_resp_sz
= NFS_MAX_FILE_IO_SIZE
+ nfs41_maxread_overhead
;
7812 /* Fore channel attributes */
7813 args
->fc_attrs
.max_rqst_sz
= max_rqst_sz
;
7814 args
->fc_attrs
.max_resp_sz
= max_resp_sz
;
7815 args
->fc_attrs
.max_ops
= NFS4_MAX_OPS
;
7816 args
->fc_attrs
.max_reqs
= max_session_slots
;
7818 dprintk("%s: Fore Channel : max_rqst_sz=%u max_resp_sz=%u "
7819 "max_ops=%u max_reqs=%u\n",
7821 args
->fc_attrs
.max_rqst_sz
, args
->fc_attrs
.max_resp_sz
,
7822 args
->fc_attrs
.max_ops
, args
->fc_attrs
.max_reqs
);
7824 /* Back channel attributes */
7825 args
->bc_attrs
.max_rqst_sz
= max_bc_payload
;
7826 args
->bc_attrs
.max_resp_sz
= max_bc_payload
;
7827 args
->bc_attrs
.max_resp_sz_cached
= 0;
7828 args
->bc_attrs
.max_ops
= NFS4_MAX_BACK_CHANNEL_OPS
;
7829 args
->bc_attrs
.max_reqs
= min_t(unsigned short, max_session_cb_slots
, 1);
7831 dprintk("%s: Back Channel : max_rqst_sz=%u max_resp_sz=%u "
7832 "max_resp_sz_cached=%u max_ops=%u max_reqs=%u\n",
7834 args
->bc_attrs
.max_rqst_sz
, args
->bc_attrs
.max_resp_sz
,
7835 args
->bc_attrs
.max_resp_sz_cached
, args
->bc_attrs
.max_ops
,
7836 args
->bc_attrs
.max_reqs
);
7839 static int nfs4_verify_fore_channel_attrs(struct nfs41_create_session_args
*args
,
7840 struct nfs41_create_session_res
*res
)
7842 struct nfs4_channel_attrs
*sent
= &args
->fc_attrs
;
7843 struct nfs4_channel_attrs
*rcvd
= &res
->fc_attrs
;
7845 if (rcvd
->max_resp_sz
> sent
->max_resp_sz
)
7848 * Our requested max_ops is the minimum we need; we're not
7849 * prepared to break up compounds into smaller pieces than that.
7850 * So, no point even trying to continue if the server won't
7853 if (rcvd
->max_ops
< sent
->max_ops
)
7855 if (rcvd
->max_reqs
== 0)
7857 if (rcvd
->max_reqs
> NFS4_MAX_SLOT_TABLE
)
7858 rcvd
->max_reqs
= NFS4_MAX_SLOT_TABLE
;
7862 static int nfs4_verify_back_channel_attrs(struct nfs41_create_session_args
*args
,
7863 struct nfs41_create_session_res
*res
)
7865 struct nfs4_channel_attrs
*sent
= &args
->bc_attrs
;
7866 struct nfs4_channel_attrs
*rcvd
= &res
->bc_attrs
;
7868 if (!(res
->flags
& SESSION4_BACK_CHAN
))
7870 if (rcvd
->max_rqst_sz
> sent
->max_rqst_sz
)
7872 if (rcvd
->max_resp_sz
< sent
->max_resp_sz
)
7874 if (rcvd
->max_resp_sz_cached
> sent
->max_resp_sz_cached
)
7876 if (rcvd
->max_ops
> sent
->max_ops
)
7878 if (rcvd
->max_reqs
> sent
->max_reqs
)
7884 static int nfs4_verify_channel_attrs(struct nfs41_create_session_args
*args
,
7885 struct nfs41_create_session_res
*res
)
7889 ret
= nfs4_verify_fore_channel_attrs(args
, res
);
7892 return nfs4_verify_back_channel_attrs(args
, res
);
7895 static void nfs4_update_session(struct nfs4_session
*session
,
7896 struct nfs41_create_session_res
*res
)
7898 nfs4_copy_sessionid(&session
->sess_id
, &res
->sessionid
);
7899 /* Mark client id and session as being confirmed */
7900 session
->clp
->cl_exchange_flags
|= EXCHGID4_FLAG_CONFIRMED_R
;
7901 set_bit(NFS4_SESSION_ESTABLISHED
, &session
->session_state
);
7902 session
->flags
= res
->flags
;
7903 memcpy(&session
->fc_attrs
, &res
->fc_attrs
, sizeof(session
->fc_attrs
));
7904 if (res
->flags
& SESSION4_BACK_CHAN
)
7905 memcpy(&session
->bc_attrs
, &res
->bc_attrs
,
7906 sizeof(session
->bc_attrs
));
7909 static int _nfs4_proc_create_session(struct nfs_client
*clp
,
7910 struct rpc_cred
*cred
)
7912 struct nfs4_session
*session
= clp
->cl_session
;
7913 struct nfs41_create_session_args args
= {
7915 .clientid
= clp
->cl_clientid
,
7916 .seqid
= clp
->cl_seqid
,
7917 .cb_program
= NFS4_CALLBACK
,
7919 struct nfs41_create_session_res res
;
7921 struct rpc_message msg
= {
7922 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_CREATE_SESSION
],
7929 nfs4_init_channel_attrs(&args
, clp
->cl_rpcclient
);
7930 args
.flags
= (SESSION4_PERSIST
| SESSION4_BACK_CHAN
);
7932 status
= rpc_call_sync(session
->clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
7933 trace_nfs4_create_session(clp
, status
);
7936 case -NFS4ERR_STALE_CLIENTID
:
7937 case -NFS4ERR_DELAY
:
7946 /* Verify the session's negotiated channel_attrs values */
7947 status
= nfs4_verify_channel_attrs(&args
, &res
);
7948 /* Increment the clientid slot sequence id */
7951 nfs4_update_session(session
, &res
);
7958 * Issues a CREATE_SESSION operation to the server.
7959 * It is the responsibility of the caller to verify the session is
7960 * expired before calling this routine.
7962 int nfs4_proc_create_session(struct nfs_client
*clp
, struct rpc_cred
*cred
)
7966 struct nfs4_session
*session
= clp
->cl_session
;
7968 dprintk("--> %s clp=%p session=%p\n", __func__
, clp
, session
);
7970 status
= _nfs4_proc_create_session(clp
, cred
);
7974 /* Init or reset the session slot tables */
7975 status
= nfs4_setup_session_slot_tables(session
);
7976 dprintk("slot table setup returned %d\n", status
);
7980 ptr
= (unsigned *)&session
->sess_id
.data
[0];
7981 dprintk("%s client>seqid %d sessionid %u:%u:%u:%u\n", __func__
,
7982 clp
->cl_seqid
, ptr
[0], ptr
[1], ptr
[2], ptr
[3]);
7984 dprintk("<-- %s\n", __func__
);
7989 * Issue the over-the-wire RPC DESTROY_SESSION.
7990 * The caller must serialize access to this routine.
7992 int nfs4_proc_destroy_session(struct nfs4_session
*session
,
7993 struct rpc_cred
*cred
)
7995 struct rpc_message msg
= {
7996 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_DESTROY_SESSION
],
7997 .rpc_argp
= session
,
8002 dprintk("--> nfs4_proc_destroy_session\n");
8004 /* session is still being setup */
8005 if (!test_and_clear_bit(NFS4_SESSION_ESTABLISHED
, &session
->session_state
))
8008 status
= rpc_call_sync(session
->clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
8009 trace_nfs4_destroy_session(session
->clp
, status
);
8012 dprintk("NFS: Got error %d from the server on DESTROY_SESSION. "
8013 "Session has been destroyed regardless...\n", status
);
8015 dprintk("<-- nfs4_proc_destroy_session\n");
8020 * Renew the cl_session lease.
8022 struct nfs4_sequence_data
{
8023 struct nfs_client
*clp
;
8024 struct nfs4_sequence_args args
;
8025 struct nfs4_sequence_res res
;
8028 static void nfs41_sequence_release(void *data
)
8030 struct nfs4_sequence_data
*calldata
= data
;
8031 struct nfs_client
*clp
= calldata
->clp
;
8033 if (atomic_read(&clp
->cl_count
) > 1)
8034 nfs4_schedule_state_renewal(clp
);
8035 nfs_put_client(clp
);
8039 static int nfs41_sequence_handle_errors(struct rpc_task
*task
, struct nfs_client
*clp
)
8041 switch(task
->tk_status
) {
8042 case -NFS4ERR_DELAY
:
8043 rpc_delay(task
, NFS4_POLL_RETRY_MAX
);
8046 nfs4_schedule_lease_recovery(clp
);
8051 static void nfs41_sequence_call_done(struct rpc_task
*task
, void *data
)
8053 struct nfs4_sequence_data
*calldata
= data
;
8054 struct nfs_client
*clp
= calldata
->clp
;
8056 if (!nfs41_sequence_done(task
, task
->tk_msg
.rpc_resp
))
8059 trace_nfs4_sequence(clp
, task
->tk_status
);
8060 if (task
->tk_status
< 0) {
8061 dprintk("%s ERROR %d\n", __func__
, task
->tk_status
);
8062 if (atomic_read(&clp
->cl_count
) == 1)
8065 if (nfs41_sequence_handle_errors(task
, clp
) == -EAGAIN
) {
8066 rpc_restart_call_prepare(task
);
8070 dprintk("%s rpc_cred %p\n", __func__
, task
->tk_msg
.rpc_cred
);
8072 dprintk("<-- %s\n", __func__
);
8075 static void nfs41_sequence_prepare(struct rpc_task
*task
, void *data
)
8077 struct nfs4_sequence_data
*calldata
= data
;
8078 struct nfs_client
*clp
= calldata
->clp
;
8079 struct nfs4_sequence_args
*args
;
8080 struct nfs4_sequence_res
*res
;
8082 args
= task
->tk_msg
.rpc_argp
;
8083 res
= task
->tk_msg
.rpc_resp
;
8085 nfs41_setup_sequence(clp
->cl_session
, args
, res
, task
);
8088 static const struct rpc_call_ops nfs41_sequence_ops
= {
8089 .rpc_call_done
= nfs41_sequence_call_done
,
8090 .rpc_call_prepare
= nfs41_sequence_prepare
,
8091 .rpc_release
= nfs41_sequence_release
,
8094 static struct rpc_task
*_nfs41_proc_sequence(struct nfs_client
*clp
,
8095 struct rpc_cred
*cred
,
8098 struct nfs4_sequence_data
*calldata
;
8099 struct rpc_message msg
= {
8100 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SEQUENCE
],
8103 struct rpc_task_setup task_setup_data
= {
8104 .rpc_client
= clp
->cl_rpcclient
,
8105 .rpc_message
= &msg
,
8106 .callback_ops
= &nfs41_sequence_ops
,
8107 .flags
= RPC_TASK_ASYNC
| RPC_TASK_TIMEOUT
,
8110 if (!atomic_inc_not_zero(&clp
->cl_count
))
8111 return ERR_PTR(-EIO
);
8112 calldata
= kzalloc(sizeof(*calldata
), GFP_NOFS
);
8113 if (calldata
== NULL
) {
8114 nfs_put_client(clp
);
8115 return ERR_PTR(-ENOMEM
);
8117 nfs4_init_sequence(&calldata
->args
, &calldata
->res
, 0);
8119 nfs4_set_sequence_privileged(&calldata
->args
);
8120 msg
.rpc_argp
= &calldata
->args
;
8121 msg
.rpc_resp
= &calldata
->res
;
8122 calldata
->clp
= clp
;
8123 task_setup_data
.callback_data
= calldata
;
8125 return rpc_run_task(&task_setup_data
);
8128 static int nfs41_proc_async_sequence(struct nfs_client
*clp
, struct rpc_cred
*cred
, unsigned renew_flags
)
8130 struct rpc_task
*task
;
8133 if ((renew_flags
& NFS4_RENEW_TIMEOUT
) == 0)
8135 task
= _nfs41_proc_sequence(clp
, cred
, false);
8137 ret
= PTR_ERR(task
);
8139 rpc_put_task_async(task
);
8140 dprintk("<-- %s status=%d\n", __func__
, ret
);
8144 static int nfs4_proc_sequence(struct nfs_client
*clp
, struct rpc_cred
*cred
)
8146 struct rpc_task
*task
;
8149 task
= _nfs41_proc_sequence(clp
, cred
, true);
8151 ret
= PTR_ERR(task
);
8154 ret
= rpc_wait_for_completion_task(task
);
8156 ret
= task
->tk_status
;
8159 dprintk("<-- %s status=%d\n", __func__
, ret
);
8163 struct nfs4_reclaim_complete_data
{
8164 struct nfs_client
*clp
;
8165 struct nfs41_reclaim_complete_args arg
;
8166 struct nfs41_reclaim_complete_res res
;
8169 static void nfs4_reclaim_complete_prepare(struct rpc_task
*task
, void *data
)
8171 struct nfs4_reclaim_complete_data
*calldata
= data
;
8173 nfs41_setup_sequence(calldata
->clp
->cl_session
,
8174 &calldata
->arg
.seq_args
,
8175 &calldata
->res
.seq_res
,
8179 static int nfs41_reclaim_complete_handle_errors(struct rpc_task
*task
, struct nfs_client
*clp
)
8181 switch(task
->tk_status
) {
8183 case -NFS4ERR_COMPLETE_ALREADY
:
8184 case -NFS4ERR_WRONG_CRED
: /* What to do here? */
8186 case -NFS4ERR_DELAY
:
8187 rpc_delay(task
, NFS4_POLL_RETRY_MAX
);
8189 case -NFS4ERR_RETRY_UNCACHED_REP
:
8192 nfs4_schedule_lease_recovery(clp
);
8197 static void nfs4_reclaim_complete_done(struct rpc_task
*task
, void *data
)
8199 struct nfs4_reclaim_complete_data
*calldata
= data
;
8200 struct nfs_client
*clp
= calldata
->clp
;
8201 struct nfs4_sequence_res
*res
= &calldata
->res
.seq_res
;
8203 dprintk("--> %s\n", __func__
);
8204 if (!nfs41_sequence_done(task
, res
))
8207 trace_nfs4_reclaim_complete(clp
, task
->tk_status
);
8208 if (nfs41_reclaim_complete_handle_errors(task
, clp
) == -EAGAIN
) {
8209 rpc_restart_call_prepare(task
);
8212 dprintk("<-- %s\n", __func__
);
8215 static void nfs4_free_reclaim_complete_data(void *data
)
8217 struct nfs4_reclaim_complete_data
*calldata
= data
;
8222 static const struct rpc_call_ops nfs4_reclaim_complete_call_ops
= {
8223 .rpc_call_prepare
= nfs4_reclaim_complete_prepare
,
8224 .rpc_call_done
= nfs4_reclaim_complete_done
,
8225 .rpc_release
= nfs4_free_reclaim_complete_data
,
8229 * Issue a global reclaim complete.
8231 static int nfs41_proc_reclaim_complete(struct nfs_client
*clp
,
8232 struct rpc_cred
*cred
)
8234 struct nfs4_reclaim_complete_data
*calldata
;
8235 struct rpc_task
*task
;
8236 struct rpc_message msg
= {
8237 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RECLAIM_COMPLETE
],
8240 struct rpc_task_setup task_setup_data
= {
8241 .rpc_client
= clp
->cl_rpcclient
,
8242 .rpc_message
= &msg
,
8243 .callback_ops
= &nfs4_reclaim_complete_call_ops
,
8244 .flags
= RPC_TASK_ASYNC
,
8246 int status
= -ENOMEM
;
8248 dprintk("--> %s\n", __func__
);
8249 calldata
= kzalloc(sizeof(*calldata
), GFP_NOFS
);
8250 if (calldata
== NULL
)
8252 calldata
->clp
= clp
;
8253 calldata
->arg
.one_fs
= 0;
8255 nfs4_init_sequence(&calldata
->arg
.seq_args
, &calldata
->res
.seq_res
, 0);
8256 nfs4_set_sequence_privileged(&calldata
->arg
.seq_args
);
8257 msg
.rpc_argp
= &calldata
->arg
;
8258 msg
.rpc_resp
= &calldata
->res
;
8259 task_setup_data
.callback_data
= calldata
;
8260 task
= rpc_run_task(&task_setup_data
);
8262 status
= PTR_ERR(task
);
8265 status
= nfs4_wait_for_completion_rpc_task(task
);
8267 status
= task
->tk_status
;
8271 dprintk("<-- %s status=%d\n", __func__
, status
);
8276 nfs4_layoutget_prepare(struct rpc_task
*task
, void *calldata
)
8278 struct nfs4_layoutget
*lgp
= calldata
;
8279 struct nfs_server
*server
= NFS_SERVER(lgp
->args
.inode
);
8280 struct nfs4_session
*session
= nfs4_get_session(server
);
8282 dprintk("--> %s\n", __func__
);
8283 nfs41_setup_sequence(session
, &lgp
->args
.seq_args
,
8284 &lgp
->res
.seq_res
, task
);
8285 dprintk("<-- %s\n", __func__
);
8288 static void nfs4_layoutget_done(struct rpc_task
*task
, void *calldata
)
8290 struct nfs4_layoutget
*lgp
= calldata
;
8292 dprintk("--> %s\n", __func__
);
8293 nfs41_sequence_process(task
, &lgp
->res
.seq_res
);
8294 dprintk("<-- %s\n", __func__
);
8298 nfs4_layoutget_handle_exception(struct rpc_task
*task
,
8299 struct nfs4_layoutget
*lgp
, struct nfs4_exception
*exception
)
8301 struct inode
*inode
= lgp
->args
.inode
;
8302 struct nfs_server
*server
= NFS_SERVER(inode
);
8303 struct pnfs_layout_hdr
*lo
;
8304 int nfs4err
= task
->tk_status
;
8305 int err
, status
= 0;
8308 dprintk("--> %s tk_status => %d\n", __func__
, -task
->tk_status
);
8315 * NFS4ERR_LAYOUTUNAVAILABLE means we are not supposed to use pnfs
8316 * on the file. set tk_status to -ENODATA to tell upper layer to
8319 case -NFS4ERR_LAYOUTUNAVAILABLE
:
8323 * NFS4ERR_BADLAYOUT means the MDS cannot return a layout of
8324 * length lgp->args.minlength != 0 (see RFC5661 section 18.43.3).
8326 case -NFS4ERR_BADLAYOUT
:
8327 status
= -EOVERFLOW
;
8330 * NFS4ERR_LAYOUTTRYLATER is a conflict with another client
8331 * (or clients) writing to the same RAID stripe except when
8332 * the minlength argument is 0 (see RFC5661 section 18.43.3).
8334 * Treat it like we would RECALLCONFLICT -- we retry for a little
8335 * while, and then eventually give up.
8337 case -NFS4ERR_LAYOUTTRYLATER
:
8338 if (lgp
->args
.minlength
== 0) {
8339 status
= -EOVERFLOW
;
8344 case -NFS4ERR_RECALLCONFLICT
:
8345 status
= -ERECALLCONFLICT
;
8347 case -NFS4ERR_DELEG_REVOKED
:
8348 case -NFS4ERR_ADMIN_REVOKED
:
8349 case -NFS4ERR_EXPIRED
:
8350 case -NFS4ERR_BAD_STATEID
:
8351 exception
->timeout
= 0;
8352 spin_lock(&inode
->i_lock
);
8353 lo
= NFS_I(inode
)->layout
;
8354 /* If the open stateid was bad, then recover it. */
8355 if (!lo
|| test_bit(NFS_LAYOUT_INVALID_STID
, &lo
->plh_flags
) ||
8356 nfs4_stateid_match_other(&lgp
->args
.stateid
,
8357 &lgp
->args
.ctx
->state
->stateid
)) {
8358 spin_unlock(&inode
->i_lock
);
8359 exception
->state
= lgp
->args
.ctx
->state
;
8360 exception
->stateid
= &lgp
->args
.stateid
;
8365 * Mark the bad layout state as invalid, then retry
8367 pnfs_mark_layout_stateid_invalid(lo
, &head
);
8368 spin_unlock(&inode
->i_lock
);
8369 pnfs_free_lseg_list(&head
);
8374 err
= nfs4_handle_exception(server
, nfs4err
, exception
);
8376 if (exception
->retry
)
8382 dprintk("<-- %s\n", __func__
);
8386 static size_t max_response_pages(struct nfs_server
*server
)
8388 u32 max_resp_sz
= server
->nfs_client
->cl_session
->fc_attrs
.max_resp_sz
;
8389 return nfs_page_array_len(0, max_resp_sz
);
8392 static void nfs4_free_pages(struct page
**pages
, size_t size
)
8399 for (i
= 0; i
< size
; i
++) {
8402 __free_page(pages
[i
]);
8407 static struct page
**nfs4_alloc_pages(size_t size
, gfp_t gfp_flags
)
8409 struct page
**pages
;
8412 pages
= kcalloc(size
, sizeof(struct page
*), gfp_flags
);
8414 dprintk("%s: can't alloc array of %zu pages\n", __func__
, size
);
8418 for (i
= 0; i
< size
; i
++) {
8419 pages
[i
] = alloc_page(gfp_flags
);
8421 dprintk("%s: failed to allocate page\n", __func__
);
8422 nfs4_free_pages(pages
, size
);
8430 static void nfs4_layoutget_release(void *calldata
)
8432 struct nfs4_layoutget
*lgp
= calldata
;
8433 struct inode
*inode
= lgp
->args
.inode
;
8434 struct nfs_server
*server
= NFS_SERVER(inode
);
8435 size_t max_pages
= max_response_pages(server
);
8437 dprintk("--> %s\n", __func__
);
8438 nfs4_free_pages(lgp
->args
.layout
.pages
, max_pages
);
8439 pnfs_put_layout_hdr(NFS_I(inode
)->layout
);
8440 put_nfs_open_context(lgp
->args
.ctx
);
8442 dprintk("<-- %s\n", __func__
);
8445 static const struct rpc_call_ops nfs4_layoutget_call_ops
= {
8446 .rpc_call_prepare
= nfs4_layoutget_prepare
,
8447 .rpc_call_done
= nfs4_layoutget_done
,
8448 .rpc_release
= nfs4_layoutget_release
,
8451 struct pnfs_layout_segment
*
8452 nfs4_proc_layoutget(struct nfs4_layoutget
*lgp
, long *timeout
, gfp_t gfp_flags
)
8454 struct inode
*inode
= lgp
->args
.inode
;
8455 struct nfs_server
*server
= NFS_SERVER(inode
);
8456 size_t max_pages
= max_response_pages(server
);
8457 struct rpc_task
*task
;
8458 struct rpc_message msg
= {
8459 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LAYOUTGET
],
8460 .rpc_argp
= &lgp
->args
,
8461 .rpc_resp
= &lgp
->res
,
8462 .rpc_cred
= lgp
->cred
,
8464 struct rpc_task_setup task_setup_data
= {
8465 .rpc_client
= server
->client
,
8466 .rpc_message
= &msg
,
8467 .callback_ops
= &nfs4_layoutget_call_ops
,
8468 .callback_data
= lgp
,
8469 .flags
= RPC_TASK_ASYNC
,
8471 struct pnfs_layout_segment
*lseg
= NULL
;
8472 struct nfs4_exception exception
= {
8474 .timeout
= *timeout
,
8478 dprintk("--> %s\n", __func__
);
8480 /* nfs4_layoutget_release calls pnfs_put_layout_hdr */
8481 pnfs_get_layout_hdr(NFS_I(inode
)->layout
);
8483 lgp
->args
.layout
.pages
= nfs4_alloc_pages(max_pages
, gfp_flags
);
8484 if (!lgp
->args
.layout
.pages
) {
8485 nfs4_layoutget_release(lgp
);
8486 return ERR_PTR(-ENOMEM
);
8488 lgp
->args
.layout
.pglen
= max_pages
* PAGE_SIZE
;
8490 lgp
->res
.layoutp
= &lgp
->args
.layout
;
8491 lgp
->res
.seq_res
.sr_slot
= NULL
;
8492 nfs4_init_sequence(&lgp
->args
.seq_args
, &lgp
->res
.seq_res
, 0);
8494 task
= rpc_run_task(&task_setup_data
);
8496 return ERR_CAST(task
);
8497 status
= nfs4_wait_for_completion_rpc_task(task
);
8499 status
= nfs4_layoutget_handle_exception(task
, lgp
, &exception
);
8500 *timeout
= exception
.timeout
;
8503 trace_nfs4_layoutget(lgp
->args
.ctx
,
8509 /* if layoutp->len is 0, nfs4_layoutget_prepare called rpc_exit */
8510 if (status
== 0 && lgp
->res
.layoutp
->len
)
8511 lseg
= pnfs_layout_process(lgp
);
8512 nfs4_sequence_free_slot(&lgp
->res
.seq_res
);
8514 dprintk("<-- %s status=%d\n", __func__
, status
);
8516 return ERR_PTR(status
);
8521 nfs4_layoutreturn_prepare(struct rpc_task
*task
, void *calldata
)
8523 struct nfs4_layoutreturn
*lrp
= calldata
;
8525 dprintk("--> %s\n", __func__
);
8526 nfs41_setup_sequence(lrp
->clp
->cl_session
,
8527 &lrp
->args
.seq_args
,
8532 static void nfs4_layoutreturn_done(struct rpc_task
*task
, void *calldata
)
8534 struct nfs4_layoutreturn
*lrp
= calldata
;
8535 struct nfs_server
*server
;
8537 dprintk("--> %s\n", __func__
);
8539 if (!nfs41_sequence_process(task
, &lrp
->res
.seq_res
))
8542 server
= NFS_SERVER(lrp
->args
.inode
);
8543 switch (task
->tk_status
) {
8545 task
->tk_status
= 0;
8548 case -NFS4ERR_DELAY
:
8549 if (nfs4_async_handle_error(task
, server
, NULL
, NULL
) != -EAGAIN
)
8551 nfs4_sequence_free_slot(&lrp
->res
.seq_res
);
8552 rpc_restart_call_prepare(task
);
8555 dprintk("<-- %s\n", __func__
);
8558 static void nfs4_layoutreturn_release(void *calldata
)
8560 struct nfs4_layoutreturn
*lrp
= calldata
;
8561 struct pnfs_layout_hdr
*lo
= lrp
->args
.layout
;
8564 dprintk("--> %s\n", __func__
);
8565 spin_lock(&lo
->plh_inode
->i_lock
);
8566 if (lrp
->res
.lrs_present
) {
8567 pnfs_mark_matching_lsegs_invalid(lo
, &freeme
,
8569 be32_to_cpu(lrp
->args
.stateid
.seqid
));
8570 pnfs_set_layout_stateid(lo
, &lrp
->res
.stateid
, true);
8572 pnfs_mark_layout_stateid_invalid(lo
, &freeme
);
8573 pnfs_clear_layoutreturn_waitbit(lo
);
8574 spin_unlock(&lo
->plh_inode
->i_lock
);
8575 nfs4_sequence_free_slot(&lrp
->res
.seq_res
);
8576 pnfs_free_lseg_list(&freeme
);
8577 pnfs_put_layout_hdr(lrp
->args
.layout
);
8578 nfs_iput_and_deactive(lrp
->inode
);
8580 dprintk("<-- %s\n", __func__
);
8583 static const struct rpc_call_ops nfs4_layoutreturn_call_ops
= {
8584 .rpc_call_prepare
= nfs4_layoutreturn_prepare
,
8585 .rpc_call_done
= nfs4_layoutreturn_done
,
8586 .rpc_release
= nfs4_layoutreturn_release
,
8589 int nfs4_proc_layoutreturn(struct nfs4_layoutreturn
*lrp
, bool sync
)
8591 struct rpc_task
*task
;
8592 struct rpc_message msg
= {
8593 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LAYOUTRETURN
],
8594 .rpc_argp
= &lrp
->args
,
8595 .rpc_resp
= &lrp
->res
,
8596 .rpc_cred
= lrp
->cred
,
8598 struct rpc_task_setup task_setup_data
= {
8599 .rpc_client
= NFS_SERVER(lrp
->args
.inode
)->client
,
8600 .rpc_message
= &msg
,
8601 .callback_ops
= &nfs4_layoutreturn_call_ops
,
8602 .callback_data
= lrp
,
8606 nfs4_state_protect(NFS_SERVER(lrp
->args
.inode
)->nfs_client
,
8607 NFS_SP4_MACH_CRED_PNFS_CLEANUP
,
8608 &task_setup_data
.rpc_client
, &msg
);
8610 dprintk("--> %s\n", __func__
);
8612 lrp
->inode
= nfs_igrab_and_active(lrp
->args
.inode
);
8614 nfs4_layoutreturn_release(lrp
);
8617 task_setup_data
.flags
|= RPC_TASK_ASYNC
;
8619 nfs4_init_sequence(&lrp
->args
.seq_args
, &lrp
->res
.seq_res
, 1);
8620 task
= rpc_run_task(&task_setup_data
);
8622 return PTR_ERR(task
);
8624 status
= task
->tk_status
;
8625 trace_nfs4_layoutreturn(lrp
->args
.inode
, &lrp
->args
.stateid
, status
);
8626 dprintk("<-- %s status=%d\n", __func__
, status
);
8632 _nfs4_proc_getdeviceinfo(struct nfs_server
*server
,
8633 struct pnfs_device
*pdev
,
8634 struct rpc_cred
*cred
)
8636 struct nfs4_getdeviceinfo_args args
= {
8638 .notify_types
= NOTIFY_DEVICEID4_CHANGE
|
8639 NOTIFY_DEVICEID4_DELETE
,
8641 struct nfs4_getdeviceinfo_res res
= {
8644 struct rpc_message msg
= {
8645 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GETDEVICEINFO
],
8652 dprintk("--> %s\n", __func__
);
8653 status
= nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
8654 if (res
.notification
& ~args
.notify_types
)
8655 dprintk("%s: unsupported notification\n", __func__
);
8656 if (res
.notification
!= args
.notify_types
)
8659 dprintk("<-- %s status=%d\n", __func__
, status
);
8664 int nfs4_proc_getdeviceinfo(struct nfs_server
*server
,
8665 struct pnfs_device
*pdev
,
8666 struct rpc_cred
*cred
)
8668 struct nfs4_exception exception
= { };
8672 err
= nfs4_handle_exception(server
,
8673 _nfs4_proc_getdeviceinfo(server
, pdev
, cred
),
8675 } while (exception
.retry
);
8678 EXPORT_SYMBOL_GPL(nfs4_proc_getdeviceinfo
);
8680 static void nfs4_layoutcommit_prepare(struct rpc_task
*task
, void *calldata
)
8682 struct nfs4_layoutcommit_data
*data
= calldata
;
8683 struct nfs_server
*server
= NFS_SERVER(data
->args
.inode
);
8684 struct nfs4_session
*session
= nfs4_get_session(server
);
8686 nfs41_setup_sequence(session
,
8687 &data
->args
.seq_args
,
8693 nfs4_layoutcommit_done(struct rpc_task
*task
, void *calldata
)
8695 struct nfs4_layoutcommit_data
*data
= calldata
;
8696 struct nfs_server
*server
= NFS_SERVER(data
->args
.inode
);
8698 if (!nfs41_sequence_done(task
, &data
->res
.seq_res
))
8701 switch (task
->tk_status
) { /* Just ignore these failures */
8702 case -NFS4ERR_DELEG_REVOKED
: /* layout was recalled */
8703 case -NFS4ERR_BADIOMODE
: /* no IOMODE_RW layout for range */
8704 case -NFS4ERR_BADLAYOUT
: /* no layout */
8705 case -NFS4ERR_GRACE
: /* loca_recalim always false */
8706 task
->tk_status
= 0;
8710 if (nfs4_async_handle_error(task
, server
, NULL
, NULL
) == -EAGAIN
) {
8711 rpc_restart_call_prepare(task
);
8717 static void nfs4_layoutcommit_release(void *calldata
)
8719 struct nfs4_layoutcommit_data
*data
= calldata
;
8721 pnfs_cleanup_layoutcommit(data
);
8722 nfs_post_op_update_inode_force_wcc(data
->args
.inode
,
8724 put_rpccred(data
->cred
);
8725 nfs_iput_and_deactive(data
->inode
);
8729 static const struct rpc_call_ops nfs4_layoutcommit_ops
= {
8730 .rpc_call_prepare
= nfs4_layoutcommit_prepare
,
8731 .rpc_call_done
= nfs4_layoutcommit_done
,
8732 .rpc_release
= nfs4_layoutcommit_release
,
8736 nfs4_proc_layoutcommit(struct nfs4_layoutcommit_data
*data
, bool sync
)
8738 struct rpc_message msg
= {
8739 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LAYOUTCOMMIT
],
8740 .rpc_argp
= &data
->args
,
8741 .rpc_resp
= &data
->res
,
8742 .rpc_cred
= data
->cred
,
8744 struct rpc_task_setup task_setup_data
= {
8745 .task
= &data
->task
,
8746 .rpc_client
= NFS_CLIENT(data
->args
.inode
),
8747 .rpc_message
= &msg
,
8748 .callback_ops
= &nfs4_layoutcommit_ops
,
8749 .callback_data
= data
,
8751 struct rpc_task
*task
;
8754 dprintk("NFS: initiating layoutcommit call. sync %d "
8755 "lbw: %llu inode %lu\n", sync
,
8756 data
->args
.lastbytewritten
,
8757 data
->args
.inode
->i_ino
);
8760 data
->inode
= nfs_igrab_and_active(data
->args
.inode
);
8761 if (data
->inode
== NULL
) {
8762 nfs4_layoutcommit_release(data
);
8765 task_setup_data
.flags
= RPC_TASK_ASYNC
;
8767 nfs4_init_sequence(&data
->args
.seq_args
, &data
->res
.seq_res
, 1);
8768 task
= rpc_run_task(&task_setup_data
);
8770 return PTR_ERR(task
);
8772 status
= task
->tk_status
;
8773 trace_nfs4_layoutcommit(data
->args
.inode
, &data
->args
.stateid
, status
);
8774 dprintk("%s: status %d\n", __func__
, status
);
8780 * Use the state managment nfs_client cl_rpcclient, which uses krb5i (if
8781 * possible) as per RFC3530bis and RFC5661 Security Considerations sections
8784 _nfs41_proc_secinfo_no_name(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
8785 struct nfs_fsinfo
*info
,
8786 struct nfs4_secinfo_flavors
*flavors
, bool use_integrity
)
8788 struct nfs41_secinfo_no_name_args args
= {
8789 .style
= SECINFO_STYLE_CURRENT_FH
,
8791 struct nfs4_secinfo_res res
= {
8794 struct rpc_message msg
= {
8795 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SECINFO_NO_NAME
],
8799 struct rpc_clnt
*clnt
= server
->client
;
8800 struct rpc_cred
*cred
= NULL
;
8803 if (use_integrity
) {
8804 clnt
= server
->nfs_client
->cl_rpcclient
;
8805 cred
= nfs4_get_clid_cred(server
->nfs_client
);
8806 msg
.rpc_cred
= cred
;
8809 dprintk("--> %s\n", __func__
);
8810 status
= nfs4_call_sync(clnt
, server
, &msg
, &args
.seq_args
,
8812 dprintk("<-- %s status=%d\n", __func__
, status
);
8821 nfs41_proc_secinfo_no_name(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
8822 struct nfs_fsinfo
*info
, struct nfs4_secinfo_flavors
*flavors
)
8824 struct nfs4_exception exception
= { };
8827 /* first try using integrity protection */
8828 err
= -NFS4ERR_WRONGSEC
;
8830 /* try to use integrity protection with machine cred */
8831 if (_nfs4_is_integrity_protected(server
->nfs_client
))
8832 err
= _nfs41_proc_secinfo_no_name(server
, fhandle
, info
,
8836 * if unable to use integrity protection, or SECINFO with
8837 * integrity protection returns NFS4ERR_WRONGSEC (which is
8838 * disallowed by spec, but exists in deployed servers) use
8839 * the current filesystem's rpc_client and the user cred.
8841 if (err
== -NFS4ERR_WRONGSEC
)
8842 err
= _nfs41_proc_secinfo_no_name(server
, fhandle
, info
,
8847 case -NFS4ERR_WRONGSEC
:
8851 err
= nfs4_handle_exception(server
, err
, &exception
);
8853 } while (exception
.retry
);
8859 nfs41_find_root_sec(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
8860 struct nfs_fsinfo
*info
)
8864 rpc_authflavor_t flavor
= RPC_AUTH_MAXFLAVOR
;
8865 struct nfs4_secinfo_flavors
*flavors
;
8866 struct nfs4_secinfo4
*secinfo
;
8869 page
= alloc_page(GFP_KERNEL
);
8875 flavors
= page_address(page
);
8876 err
= nfs41_proc_secinfo_no_name(server
, fhandle
, info
, flavors
);
8879 * Fall back on "guess and check" method if
8880 * the server doesn't support SECINFO_NO_NAME
8882 if (err
== -NFS4ERR_WRONGSEC
|| err
== -ENOTSUPP
) {
8883 err
= nfs4_find_root_sec(server
, fhandle
, info
);
8889 for (i
= 0; i
< flavors
->num_flavors
; i
++) {
8890 secinfo
= &flavors
->flavors
[i
];
8892 switch (secinfo
->flavor
) {
8896 flavor
= rpcauth_get_pseudoflavor(secinfo
->flavor
,
8897 &secinfo
->flavor_info
);
8900 flavor
= RPC_AUTH_MAXFLAVOR
;
8904 if (!nfs_auth_info_match(&server
->auth_info
, flavor
))
8905 flavor
= RPC_AUTH_MAXFLAVOR
;
8907 if (flavor
!= RPC_AUTH_MAXFLAVOR
) {
8908 err
= nfs4_lookup_root_sec(server
, fhandle
,
8915 if (flavor
== RPC_AUTH_MAXFLAVOR
)
8926 static int _nfs41_test_stateid(struct nfs_server
*server
,
8927 nfs4_stateid
*stateid
,
8928 struct rpc_cred
*cred
)
8931 struct nfs41_test_stateid_args args
= {
8934 struct nfs41_test_stateid_res res
;
8935 struct rpc_message msg
= {
8936 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_TEST_STATEID
],
8941 struct rpc_clnt
*rpc_client
= server
->client
;
8943 nfs4_state_protect(server
->nfs_client
, NFS_SP4_MACH_CRED_STATEID
,
8946 dprintk("NFS call test_stateid %p\n", stateid
);
8947 nfs4_init_sequence(&args
.seq_args
, &res
.seq_res
, 0);
8948 nfs4_set_sequence_privileged(&args
.seq_args
);
8949 status
= nfs4_call_sync_sequence(rpc_client
, server
, &msg
,
8950 &args
.seq_args
, &res
.seq_res
);
8951 if (status
!= NFS_OK
) {
8952 dprintk("NFS reply test_stateid: failed, %d\n", status
);
8955 dprintk("NFS reply test_stateid: succeeded, %d\n", -res
.status
);
8959 static void nfs4_handle_delay_or_session_error(struct nfs_server
*server
,
8960 int err
, struct nfs4_exception
*exception
)
8962 exception
->retry
= 0;
8964 case -NFS4ERR_DELAY
:
8965 case -NFS4ERR_RETRY_UNCACHED_REP
:
8966 nfs4_handle_exception(server
, err
, exception
);
8968 case -NFS4ERR_BADSESSION
:
8969 case -NFS4ERR_BADSLOT
:
8970 case -NFS4ERR_BAD_HIGH_SLOT
:
8971 case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION
:
8972 case -NFS4ERR_DEADSESSION
:
8973 nfs4_do_handle_exception(server
, err
, exception
);
8978 * nfs41_test_stateid - perform a TEST_STATEID operation
8980 * @server: server / transport on which to perform the operation
8981 * @stateid: state ID to test
8984 * Returns NFS_OK if the server recognizes that "stateid" is valid.
8985 * Otherwise a negative NFS4ERR value is returned if the operation
8986 * failed or the state ID is not currently valid.
8988 static int nfs41_test_stateid(struct nfs_server
*server
,
8989 nfs4_stateid
*stateid
,
8990 struct rpc_cred
*cred
)
8992 struct nfs4_exception exception
= { };
8995 err
= _nfs41_test_stateid(server
, stateid
, cred
);
8996 nfs4_handle_delay_or_session_error(server
, err
, &exception
);
8997 } while (exception
.retry
);
9001 struct nfs_free_stateid_data
{
9002 struct nfs_server
*server
;
9003 struct nfs41_free_stateid_args args
;
9004 struct nfs41_free_stateid_res res
;
9007 static void nfs41_free_stateid_prepare(struct rpc_task
*task
, void *calldata
)
9009 struct nfs_free_stateid_data
*data
= calldata
;
9010 nfs41_setup_sequence(nfs4_get_session(data
->server
),
9011 &data
->args
.seq_args
,
9016 static void nfs41_free_stateid_done(struct rpc_task
*task
, void *calldata
)
9018 struct nfs_free_stateid_data
*data
= calldata
;
9020 nfs41_sequence_done(task
, &data
->res
.seq_res
);
9022 switch (task
->tk_status
) {
9023 case -NFS4ERR_DELAY
:
9024 if (nfs4_async_handle_error(task
, data
->server
, NULL
, NULL
) == -EAGAIN
)
9025 rpc_restart_call_prepare(task
);
9029 static void nfs41_free_stateid_release(void *calldata
)
9034 static const struct rpc_call_ops nfs41_free_stateid_ops
= {
9035 .rpc_call_prepare
= nfs41_free_stateid_prepare
,
9036 .rpc_call_done
= nfs41_free_stateid_done
,
9037 .rpc_release
= nfs41_free_stateid_release
,
9040 static struct rpc_task
*_nfs41_free_stateid(struct nfs_server
*server
,
9041 const nfs4_stateid
*stateid
,
9042 struct rpc_cred
*cred
,
9045 struct rpc_message msg
= {
9046 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_FREE_STATEID
],
9049 struct rpc_task_setup task_setup
= {
9050 .rpc_client
= server
->client
,
9051 .rpc_message
= &msg
,
9052 .callback_ops
= &nfs41_free_stateid_ops
,
9053 .flags
= RPC_TASK_ASYNC
,
9055 struct nfs_free_stateid_data
*data
;
9057 nfs4_state_protect(server
->nfs_client
, NFS_SP4_MACH_CRED_STATEID
,
9058 &task_setup
.rpc_client
, &msg
);
9060 dprintk("NFS call free_stateid %p\n", stateid
);
9061 data
= kmalloc(sizeof(*data
), GFP_NOFS
);
9063 return ERR_PTR(-ENOMEM
);
9064 data
->server
= server
;
9065 nfs4_stateid_copy(&data
->args
.stateid
, stateid
);
9067 task_setup
.callback_data
= data
;
9069 msg
.rpc_argp
= &data
->args
;
9070 msg
.rpc_resp
= &data
->res
;
9071 nfs4_init_sequence(&data
->args
.seq_args
, &data
->res
.seq_res
, 1);
9073 nfs4_set_sequence_privileged(&data
->args
.seq_args
);
9075 return rpc_run_task(&task_setup
);
9079 * nfs41_free_stateid - perform a FREE_STATEID operation
9081 * @server: server / transport on which to perform the operation
9082 * @stateid: state ID to release
9084 * @is_recovery: set to true if this call needs to be privileged
9086 * Note: this function is always asynchronous.
9088 static int nfs41_free_stateid(struct nfs_server
*server
,
9089 const nfs4_stateid
*stateid
,
9090 struct rpc_cred
*cred
,
9093 struct rpc_task
*task
;
9095 task
= _nfs41_free_stateid(server
, stateid
, cred
, is_recovery
);
9097 return PTR_ERR(task
);
9103 nfs41_free_lock_state(struct nfs_server
*server
, struct nfs4_lock_state
*lsp
)
9105 struct rpc_cred
*cred
= lsp
->ls_state
->owner
->so_cred
;
9107 nfs41_free_stateid(server
, &lsp
->ls_stateid
, cred
, false);
9108 nfs4_free_lock_state(server
, lsp
);
9111 static bool nfs41_match_stateid(const nfs4_stateid
*s1
,
9112 const nfs4_stateid
*s2
)
9114 if (s1
->type
!= s2
->type
)
9117 if (memcmp(s1
->other
, s2
->other
, sizeof(s1
->other
)) != 0)
9120 if (s1
->seqid
== s2
->seqid
)
9122 if (s1
->seqid
== 0 || s2
->seqid
== 0)
9128 #endif /* CONFIG_NFS_V4_1 */
9130 static bool nfs4_match_stateid(const nfs4_stateid
*s1
,
9131 const nfs4_stateid
*s2
)
9133 return nfs4_stateid_match(s1
, s2
);
9137 static const struct nfs4_state_recovery_ops nfs40_reboot_recovery_ops
= {
9138 .owner_flag_bit
= NFS_OWNER_RECLAIM_REBOOT
,
9139 .state_flag_bit
= NFS_STATE_RECLAIM_REBOOT
,
9140 .recover_open
= nfs4_open_reclaim
,
9141 .recover_lock
= nfs4_lock_reclaim
,
9142 .establish_clid
= nfs4_init_clientid
,
9143 .detect_trunking
= nfs40_discover_server_trunking
,
9146 #if defined(CONFIG_NFS_V4_1)
9147 static const struct nfs4_state_recovery_ops nfs41_reboot_recovery_ops
= {
9148 .owner_flag_bit
= NFS_OWNER_RECLAIM_REBOOT
,
9149 .state_flag_bit
= NFS_STATE_RECLAIM_REBOOT
,
9150 .recover_open
= nfs4_open_reclaim
,
9151 .recover_lock
= nfs4_lock_reclaim
,
9152 .establish_clid
= nfs41_init_clientid
,
9153 .reclaim_complete
= nfs41_proc_reclaim_complete
,
9154 .detect_trunking
= nfs41_discover_server_trunking
,
9156 #endif /* CONFIG_NFS_V4_1 */
9158 static const struct nfs4_state_recovery_ops nfs40_nograce_recovery_ops
= {
9159 .owner_flag_bit
= NFS_OWNER_RECLAIM_NOGRACE
,
9160 .state_flag_bit
= NFS_STATE_RECLAIM_NOGRACE
,
9161 .recover_open
= nfs40_open_expired
,
9162 .recover_lock
= nfs4_lock_expired
,
9163 .establish_clid
= nfs4_init_clientid
,
9166 #if defined(CONFIG_NFS_V4_1)
9167 static const struct nfs4_state_recovery_ops nfs41_nograce_recovery_ops
= {
9168 .owner_flag_bit
= NFS_OWNER_RECLAIM_NOGRACE
,
9169 .state_flag_bit
= NFS_STATE_RECLAIM_NOGRACE
,
9170 .recover_open
= nfs41_open_expired
,
9171 .recover_lock
= nfs41_lock_expired
,
9172 .establish_clid
= nfs41_init_clientid
,
9174 #endif /* CONFIG_NFS_V4_1 */
9176 static const struct nfs4_state_maintenance_ops nfs40_state_renewal_ops
= {
9177 .sched_state_renewal
= nfs4_proc_async_renew
,
9178 .get_state_renewal_cred_locked
= nfs4_get_renew_cred_locked
,
9179 .renew_lease
= nfs4_proc_renew
,
9182 #if defined(CONFIG_NFS_V4_1)
9183 static const struct nfs4_state_maintenance_ops nfs41_state_renewal_ops
= {
9184 .sched_state_renewal
= nfs41_proc_async_sequence
,
9185 .get_state_renewal_cred_locked
= nfs4_get_machine_cred_locked
,
9186 .renew_lease
= nfs4_proc_sequence
,
9190 static const struct nfs4_mig_recovery_ops nfs40_mig_recovery_ops
= {
9191 .get_locations
= _nfs40_proc_get_locations
,
9192 .fsid_present
= _nfs40_proc_fsid_present
,
9195 #if defined(CONFIG_NFS_V4_1)
9196 static const struct nfs4_mig_recovery_ops nfs41_mig_recovery_ops
= {
9197 .get_locations
= _nfs41_proc_get_locations
,
9198 .fsid_present
= _nfs41_proc_fsid_present
,
9200 #endif /* CONFIG_NFS_V4_1 */
9202 static const struct nfs4_minor_version_ops nfs_v4_0_minor_ops
= {
9204 .init_caps
= NFS_CAP_READDIRPLUS
9205 | NFS_CAP_ATOMIC_OPEN
9206 | NFS_CAP_POSIX_LOCK
,
9207 .init_client
= nfs40_init_client
,
9208 .shutdown_client
= nfs40_shutdown_client
,
9209 .match_stateid
= nfs4_match_stateid
,
9210 .find_root_sec
= nfs4_find_root_sec
,
9211 .free_lock_state
= nfs4_release_lockowner
,
9212 .test_and_free_expired
= nfs40_test_and_free_expired_stateid
,
9213 .alloc_seqid
= nfs_alloc_seqid
,
9214 .call_sync_ops
= &nfs40_call_sync_ops
,
9215 .reboot_recovery_ops
= &nfs40_reboot_recovery_ops
,
9216 .nograce_recovery_ops
= &nfs40_nograce_recovery_ops
,
9217 .state_renewal_ops
= &nfs40_state_renewal_ops
,
9218 .mig_recovery_ops
= &nfs40_mig_recovery_ops
,
9221 #if defined(CONFIG_NFS_V4_1)
9222 static struct nfs_seqid
*
9223 nfs_alloc_no_seqid(struct nfs_seqid_counter
*arg1
, gfp_t arg2
)
9228 static const struct nfs4_minor_version_ops nfs_v4_1_minor_ops
= {
9230 .init_caps
= NFS_CAP_READDIRPLUS
9231 | NFS_CAP_ATOMIC_OPEN
9232 | NFS_CAP_POSIX_LOCK
9233 | NFS_CAP_STATEID_NFSV41
9234 | NFS_CAP_ATOMIC_OPEN_V1
,
9235 .init_client
= nfs41_init_client
,
9236 .shutdown_client
= nfs41_shutdown_client
,
9237 .match_stateid
= nfs41_match_stateid
,
9238 .find_root_sec
= nfs41_find_root_sec
,
9239 .free_lock_state
= nfs41_free_lock_state
,
9240 .test_and_free_expired
= nfs41_test_and_free_expired_stateid
,
9241 .alloc_seqid
= nfs_alloc_no_seqid
,
9242 .session_trunk
= nfs4_test_session_trunk
,
9243 .call_sync_ops
= &nfs41_call_sync_ops
,
9244 .reboot_recovery_ops
= &nfs41_reboot_recovery_ops
,
9245 .nograce_recovery_ops
= &nfs41_nograce_recovery_ops
,
9246 .state_renewal_ops
= &nfs41_state_renewal_ops
,
9247 .mig_recovery_ops
= &nfs41_mig_recovery_ops
,
9251 #if defined(CONFIG_NFS_V4_2)
9252 static const struct nfs4_minor_version_ops nfs_v4_2_minor_ops
= {
9254 .init_caps
= NFS_CAP_READDIRPLUS
9255 | NFS_CAP_ATOMIC_OPEN
9256 | NFS_CAP_POSIX_LOCK
9257 | NFS_CAP_STATEID_NFSV41
9258 | NFS_CAP_ATOMIC_OPEN_V1
9261 | NFS_CAP_DEALLOCATE
9263 | NFS_CAP_LAYOUTSTATS
9265 .init_client
= nfs41_init_client
,
9266 .shutdown_client
= nfs41_shutdown_client
,
9267 .match_stateid
= nfs41_match_stateid
,
9268 .find_root_sec
= nfs41_find_root_sec
,
9269 .free_lock_state
= nfs41_free_lock_state
,
9270 .call_sync_ops
= &nfs41_call_sync_ops
,
9271 .test_and_free_expired
= nfs41_test_and_free_expired_stateid
,
9272 .alloc_seqid
= nfs_alloc_no_seqid
,
9273 .session_trunk
= nfs4_test_session_trunk
,
9274 .reboot_recovery_ops
= &nfs41_reboot_recovery_ops
,
9275 .nograce_recovery_ops
= &nfs41_nograce_recovery_ops
,
9276 .state_renewal_ops
= &nfs41_state_renewal_ops
,
9277 .mig_recovery_ops
= &nfs41_mig_recovery_ops
,
9281 const struct nfs4_minor_version_ops
*nfs_v4_minor_ops
[] = {
9282 [0] = &nfs_v4_0_minor_ops
,
9283 #if defined(CONFIG_NFS_V4_1)
9284 [1] = &nfs_v4_1_minor_ops
,
9286 #if defined(CONFIG_NFS_V4_2)
9287 [2] = &nfs_v4_2_minor_ops
,
9291 static ssize_t
nfs4_listxattr(struct dentry
*dentry
, char *list
, size_t size
)
9293 ssize_t error
, error2
;
9295 error
= generic_listxattr(dentry
, list
, size
);
9303 error2
= nfs4_listxattr_nfs4_label(d_inode(dentry
), list
, size
);
9306 return error
+ error2
;
9309 static const struct inode_operations nfs4_dir_inode_operations
= {
9310 .create
= nfs_create
,
9311 .lookup
= nfs_lookup
,
9312 .atomic_open
= nfs_atomic_open
,
9314 .unlink
= nfs_unlink
,
9315 .symlink
= nfs_symlink
,
9319 .rename
= nfs_rename
,
9320 .permission
= nfs_permission
,
9321 .getattr
= nfs_getattr
,
9322 .setattr
= nfs_setattr
,
9323 .listxattr
= nfs4_listxattr
,
9326 static const struct inode_operations nfs4_file_inode_operations
= {
9327 .permission
= nfs_permission
,
9328 .getattr
= nfs_getattr
,
9329 .setattr
= nfs_setattr
,
9330 .listxattr
= nfs4_listxattr
,
9333 const struct nfs_rpc_ops nfs_v4_clientops
= {
9334 .version
= 4, /* protocol version */
9335 .dentry_ops
= &nfs4_dentry_operations
,
9336 .dir_inode_ops
= &nfs4_dir_inode_operations
,
9337 .file_inode_ops
= &nfs4_file_inode_operations
,
9338 .file_ops
= &nfs4_file_operations
,
9339 .getroot
= nfs4_proc_get_root
,
9340 .submount
= nfs4_submount
,
9341 .try_mount
= nfs4_try_mount
,
9342 .getattr
= nfs4_proc_getattr
,
9343 .setattr
= nfs4_proc_setattr
,
9344 .lookup
= nfs4_proc_lookup
,
9345 .access
= nfs4_proc_access
,
9346 .readlink
= nfs4_proc_readlink
,
9347 .create
= nfs4_proc_create
,
9348 .remove
= nfs4_proc_remove
,
9349 .unlink_setup
= nfs4_proc_unlink_setup
,
9350 .unlink_rpc_prepare
= nfs4_proc_unlink_rpc_prepare
,
9351 .unlink_done
= nfs4_proc_unlink_done
,
9352 .rename_setup
= nfs4_proc_rename_setup
,
9353 .rename_rpc_prepare
= nfs4_proc_rename_rpc_prepare
,
9354 .rename_done
= nfs4_proc_rename_done
,
9355 .link
= nfs4_proc_link
,
9356 .symlink
= nfs4_proc_symlink
,
9357 .mkdir
= nfs4_proc_mkdir
,
9358 .rmdir
= nfs4_proc_remove
,
9359 .readdir
= nfs4_proc_readdir
,
9360 .mknod
= nfs4_proc_mknod
,
9361 .statfs
= nfs4_proc_statfs
,
9362 .fsinfo
= nfs4_proc_fsinfo
,
9363 .pathconf
= nfs4_proc_pathconf
,
9364 .set_capabilities
= nfs4_server_capabilities
,
9365 .decode_dirent
= nfs4_decode_dirent
,
9366 .pgio_rpc_prepare
= nfs4_proc_pgio_rpc_prepare
,
9367 .read_setup
= nfs4_proc_read_setup
,
9368 .read_done
= nfs4_read_done
,
9369 .write_setup
= nfs4_proc_write_setup
,
9370 .write_done
= nfs4_write_done
,
9371 .commit_setup
= nfs4_proc_commit_setup
,
9372 .commit_rpc_prepare
= nfs4_proc_commit_rpc_prepare
,
9373 .commit_done
= nfs4_commit_done
,
9374 .lock
= nfs4_proc_lock
,
9375 .clear_acl_cache
= nfs4_zap_acl_attr
,
9376 .close_context
= nfs4_close_context
,
9377 .open_context
= nfs4_atomic_open
,
9378 .have_delegation
= nfs4_have_delegation
,
9379 .return_delegation
= nfs4_inode_return_delegation
,
9380 .alloc_client
= nfs4_alloc_client
,
9381 .init_client
= nfs4_init_client
,
9382 .free_client
= nfs4_free_client
,
9383 .create_server
= nfs4_create_server
,
9384 .clone_server
= nfs_clone_server
,
9387 static const struct xattr_handler nfs4_xattr_nfs4_acl_handler
= {
9388 .name
= XATTR_NAME_NFSV4_ACL
,
9389 .list
= nfs4_xattr_list_nfs4_acl
,
9390 .get
= nfs4_xattr_get_nfs4_acl
,
9391 .set
= nfs4_xattr_set_nfs4_acl
,
9394 const struct xattr_handler
*nfs4_xattr_handlers
[] = {
9395 &nfs4_xattr_nfs4_acl_handler
,
9396 #ifdef CONFIG_NFS_V4_SECURITY_LABEL
9397 &nfs4_xattr_nfs4_label_handler
,