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 /* Update the slot's sequence and clientid lease timer */
761 do_renew_lease(clp
, res
->sr_timestamp
);
762 /* Check sequence flags */
763 nfs41_handle_sequence_flag_errors(clp
, res
->sr_status_flags
,
765 nfs41_update_target_slotid(slot
->table
, slot
, res
);
769 * sr_status remains 1 if an RPC level error occurred.
770 * The server may or may not have processed the sequence
772 * Mark the slot as having hosted an interrupted RPC call.
774 slot
->interrupted
= 1;
777 /* The server detected a resend of the RPC call and
778 * returned NFS4ERR_DELAY as per Section 2.10.6.2
781 dprintk("%s: slot=%u seq=%u: Operation in progress\n",
786 case -NFS4ERR_BADSLOT
:
788 * The slot id we used was probably retired. Try again
789 * using a different slot id.
792 case -NFS4ERR_SEQ_MISORDERED
:
794 * Was the last operation on this sequence interrupted?
795 * If so, retry after bumping the sequence number.
802 * Could this slot have been previously retired?
803 * If so, then the server may be expecting seq_nr = 1!
805 if (slot
->seq_nr
!= 1) {
810 case -NFS4ERR_SEQ_FALSE_RETRY
:
814 /* Just update the slot sequence no. */
818 /* The session may be reset by one of the error handlers. */
819 dprintk("%s: Error %d free the slot \n", __func__
, res
->sr_status
);
823 if (rpc_restart_call_prepare(task
)) {
824 nfs41_sequence_free_slot(res
);
830 if (!rpc_restart_call(task
))
832 rpc_delay(task
, NFS4_POLL_RETRY_MAX
);
836 int nfs41_sequence_done(struct rpc_task
*task
, struct nfs4_sequence_res
*res
)
838 if (!nfs41_sequence_process(task
, res
))
840 if (res
->sr_slot
!= NULL
)
841 nfs41_sequence_free_slot(res
);
845 EXPORT_SYMBOL_GPL(nfs41_sequence_done
);
847 static int nfs4_sequence_process(struct rpc_task
*task
, struct nfs4_sequence_res
*res
)
849 if (res
->sr_slot
== NULL
)
851 if (res
->sr_slot
->table
->session
!= NULL
)
852 return nfs41_sequence_process(task
, res
);
853 return nfs40_sequence_done(task
, res
);
856 static void nfs4_sequence_free_slot(struct nfs4_sequence_res
*res
)
858 if (res
->sr_slot
!= NULL
) {
859 if (res
->sr_slot
->table
->session
!= NULL
)
860 nfs41_sequence_free_slot(res
);
862 nfs40_sequence_free_slot(res
);
866 int nfs4_sequence_done(struct rpc_task
*task
, struct nfs4_sequence_res
*res
)
868 if (res
->sr_slot
== NULL
)
870 if (!res
->sr_slot
->table
->session
)
871 return nfs40_sequence_done(task
, res
);
872 return nfs41_sequence_done(task
, res
);
874 EXPORT_SYMBOL_GPL(nfs4_sequence_done
);
876 int nfs41_setup_sequence(struct nfs4_session
*session
,
877 struct nfs4_sequence_args
*args
,
878 struct nfs4_sequence_res
*res
,
879 struct rpc_task
*task
)
881 struct nfs4_slot
*slot
;
882 struct nfs4_slot_table
*tbl
;
884 dprintk("--> %s\n", __func__
);
885 /* slot already allocated? */
886 if (res
->sr_slot
!= NULL
)
889 tbl
= &session
->fc_slot_table
;
891 task
->tk_timeout
= 0;
893 spin_lock(&tbl
->slot_tbl_lock
);
894 if (test_bit(NFS4_SLOT_TBL_DRAINING
, &tbl
->slot_tbl_state
) &&
895 !args
->sa_privileged
) {
896 /* The state manager will wait until the slot table is empty */
897 dprintk("%s session is draining\n", __func__
);
901 slot
= nfs4_alloc_slot(tbl
);
903 /* If out of memory, try again in 1/4 second */
904 if (slot
== ERR_PTR(-ENOMEM
))
905 task
->tk_timeout
= HZ
>> 2;
906 dprintk("<-- %s: no free slots\n", __func__
);
909 spin_unlock(&tbl
->slot_tbl_lock
);
911 slot
->privileged
= args
->sa_privileged
? 1 : 0;
912 args
->sa_slot
= slot
;
914 dprintk("<-- %s slotid=%u seqid=%u\n", __func__
,
915 slot
->slot_nr
, slot
->seq_nr
);
918 res
->sr_timestamp
= jiffies
;
919 res
->sr_status_flags
= 0;
921 * sr_status is only set in decode_sequence, and so will remain
922 * set to 1 if an rpc level failure occurs.
925 trace_nfs4_setup_sequence(session
, args
);
927 rpc_call_start(task
);
930 /* Privileged tasks are queued with top priority */
931 if (args
->sa_privileged
)
932 rpc_sleep_on_priority(&tbl
->slot_tbl_waitq
, task
,
933 NULL
, RPC_PRIORITY_PRIVILEGED
);
935 rpc_sleep_on(&tbl
->slot_tbl_waitq
, task
, NULL
);
936 spin_unlock(&tbl
->slot_tbl_lock
);
939 EXPORT_SYMBOL_GPL(nfs41_setup_sequence
);
941 static int nfs4_setup_sequence(const struct nfs_server
*server
,
942 struct nfs4_sequence_args
*args
,
943 struct nfs4_sequence_res
*res
,
944 struct rpc_task
*task
)
946 struct nfs4_session
*session
= nfs4_get_session(server
);
950 return nfs40_setup_sequence(server
->nfs_client
->cl_slot_tbl
,
953 dprintk("--> %s clp %p session %p sr_slot %u\n",
954 __func__
, session
->clp
, session
, res
->sr_slot
?
955 res
->sr_slot
->slot_nr
: NFS4_NO_SLOT
);
957 ret
= nfs41_setup_sequence(session
, args
, res
, task
);
959 dprintk("<-- %s status=%d\n", __func__
, ret
);
963 static void nfs41_call_sync_prepare(struct rpc_task
*task
, void *calldata
)
965 struct nfs4_call_sync_data
*data
= calldata
;
966 struct nfs4_session
*session
= nfs4_get_session(data
->seq_server
);
968 dprintk("--> %s data->seq_server %p\n", __func__
, data
->seq_server
);
970 nfs41_setup_sequence(session
, data
->seq_args
, data
->seq_res
, task
);
973 static void nfs41_call_sync_done(struct rpc_task
*task
, void *calldata
)
975 struct nfs4_call_sync_data
*data
= calldata
;
977 nfs41_sequence_done(task
, data
->seq_res
);
980 static const struct rpc_call_ops nfs41_call_sync_ops
= {
981 .rpc_call_prepare
= nfs41_call_sync_prepare
,
982 .rpc_call_done
= nfs41_call_sync_done
,
985 #else /* !CONFIG_NFS_V4_1 */
987 static int nfs4_setup_sequence(const struct nfs_server
*server
,
988 struct nfs4_sequence_args
*args
,
989 struct nfs4_sequence_res
*res
,
990 struct rpc_task
*task
)
992 return nfs40_setup_sequence(server
->nfs_client
->cl_slot_tbl
,
996 static int nfs4_sequence_process(struct rpc_task
*task
, struct nfs4_sequence_res
*res
)
998 return nfs40_sequence_done(task
, res
);
1001 static void nfs4_sequence_free_slot(struct nfs4_sequence_res
*res
)
1003 if (res
->sr_slot
!= NULL
)
1004 nfs40_sequence_free_slot(res
);
1007 int nfs4_sequence_done(struct rpc_task
*task
,
1008 struct nfs4_sequence_res
*res
)
1010 return nfs40_sequence_done(task
, res
);
1012 EXPORT_SYMBOL_GPL(nfs4_sequence_done
);
1014 #endif /* !CONFIG_NFS_V4_1 */
1016 static void nfs40_call_sync_prepare(struct rpc_task
*task
, void *calldata
)
1018 struct nfs4_call_sync_data
*data
= calldata
;
1019 nfs4_setup_sequence(data
->seq_server
,
1020 data
->seq_args
, data
->seq_res
, task
);
1023 static void nfs40_call_sync_done(struct rpc_task
*task
, void *calldata
)
1025 struct nfs4_call_sync_data
*data
= calldata
;
1026 nfs4_sequence_done(task
, data
->seq_res
);
1029 static const struct rpc_call_ops nfs40_call_sync_ops
= {
1030 .rpc_call_prepare
= nfs40_call_sync_prepare
,
1031 .rpc_call_done
= nfs40_call_sync_done
,
1034 static int nfs4_call_sync_sequence(struct rpc_clnt
*clnt
,
1035 struct nfs_server
*server
,
1036 struct rpc_message
*msg
,
1037 struct nfs4_sequence_args
*args
,
1038 struct nfs4_sequence_res
*res
)
1041 struct rpc_task
*task
;
1042 struct nfs_client
*clp
= server
->nfs_client
;
1043 struct nfs4_call_sync_data data
= {
1044 .seq_server
= server
,
1048 struct rpc_task_setup task_setup
= {
1051 .callback_ops
= clp
->cl_mvops
->call_sync_ops
,
1052 .callback_data
= &data
1055 task
= rpc_run_task(&task_setup
);
1057 ret
= PTR_ERR(task
);
1059 ret
= task
->tk_status
;
1065 int nfs4_call_sync(struct rpc_clnt
*clnt
,
1066 struct nfs_server
*server
,
1067 struct rpc_message
*msg
,
1068 struct nfs4_sequence_args
*args
,
1069 struct nfs4_sequence_res
*res
,
1072 nfs4_init_sequence(args
, res
, cache_reply
);
1073 return nfs4_call_sync_sequence(clnt
, server
, msg
, args
, res
);
1076 static void update_changeattr(struct inode
*dir
, struct nfs4_change_info
*cinfo
)
1078 struct nfs_inode
*nfsi
= NFS_I(dir
);
1080 spin_lock(&dir
->i_lock
);
1081 nfsi
->cache_validity
|= NFS_INO_INVALID_ATTR
|NFS_INO_INVALID_DATA
;
1082 if (!cinfo
->atomic
|| cinfo
->before
!= dir
->i_version
)
1083 nfs_force_lookup_revalidate(dir
);
1084 dir
->i_version
= cinfo
->after
;
1085 nfsi
->attr_gencount
= nfs_inc_attr_generation_counter();
1086 nfs_fscache_invalidate(dir
);
1087 spin_unlock(&dir
->i_lock
);
1090 struct nfs4_opendata
{
1092 struct nfs_openargs o_arg
;
1093 struct nfs_openres o_res
;
1094 struct nfs_open_confirmargs c_arg
;
1095 struct nfs_open_confirmres c_res
;
1096 struct nfs4_string owner_name
;
1097 struct nfs4_string group_name
;
1098 struct nfs4_label
*a_label
;
1099 struct nfs_fattr f_attr
;
1100 struct nfs4_label
*f_label
;
1102 struct dentry
*dentry
;
1103 struct nfs4_state_owner
*owner
;
1104 struct nfs4_state
*state
;
1106 unsigned long timestamp
;
1107 unsigned int rpc_done
: 1;
1108 unsigned int file_created
: 1;
1109 unsigned int is_recover
: 1;
1114 static bool nfs4_clear_cap_atomic_open_v1(struct nfs_server
*server
,
1115 int err
, struct nfs4_exception
*exception
)
1119 if (!(server
->caps
& NFS_CAP_ATOMIC_OPEN_V1
))
1121 server
->caps
&= ~NFS_CAP_ATOMIC_OPEN_V1
;
1122 exception
->retry
= 1;
1127 nfs4_map_atomic_open_share(struct nfs_server
*server
,
1128 fmode_t fmode
, int openflags
)
1132 switch (fmode
& (FMODE_READ
| FMODE_WRITE
)) {
1134 res
= NFS4_SHARE_ACCESS_READ
;
1137 res
= NFS4_SHARE_ACCESS_WRITE
;
1139 case FMODE_READ
|FMODE_WRITE
:
1140 res
= NFS4_SHARE_ACCESS_BOTH
;
1142 if (!(server
->caps
& NFS_CAP_ATOMIC_OPEN_V1
))
1144 /* Want no delegation if we're using O_DIRECT */
1145 if (openflags
& O_DIRECT
)
1146 res
|= NFS4_SHARE_WANT_NO_DELEG
;
1151 static enum open_claim_type4
1152 nfs4_map_atomic_open_claim(struct nfs_server
*server
,
1153 enum open_claim_type4 claim
)
1155 if (server
->caps
& NFS_CAP_ATOMIC_OPEN_V1
)
1160 case NFS4_OPEN_CLAIM_FH
:
1161 return NFS4_OPEN_CLAIM_NULL
;
1162 case NFS4_OPEN_CLAIM_DELEG_CUR_FH
:
1163 return NFS4_OPEN_CLAIM_DELEGATE_CUR
;
1164 case NFS4_OPEN_CLAIM_DELEG_PREV_FH
:
1165 return NFS4_OPEN_CLAIM_DELEGATE_PREV
;
1169 static void nfs4_init_opendata_res(struct nfs4_opendata
*p
)
1171 p
->o_res
.f_attr
= &p
->f_attr
;
1172 p
->o_res
.f_label
= p
->f_label
;
1173 p
->o_res
.seqid
= p
->o_arg
.seqid
;
1174 p
->c_res
.seqid
= p
->c_arg
.seqid
;
1175 p
->o_res
.server
= p
->o_arg
.server
;
1176 p
->o_res
.access_request
= p
->o_arg
.access
;
1177 nfs_fattr_init(&p
->f_attr
);
1178 nfs_fattr_init_names(&p
->f_attr
, &p
->owner_name
, &p
->group_name
);
1181 static struct nfs4_opendata
*nfs4_opendata_alloc(struct dentry
*dentry
,
1182 struct nfs4_state_owner
*sp
, fmode_t fmode
, int flags
,
1183 const struct iattr
*attrs
,
1184 struct nfs4_label
*label
,
1185 enum open_claim_type4 claim
,
1188 struct dentry
*parent
= dget_parent(dentry
);
1189 struct inode
*dir
= d_inode(parent
);
1190 struct nfs_server
*server
= NFS_SERVER(dir
);
1191 struct nfs_seqid
*(*alloc_seqid
)(struct nfs_seqid_counter
*, gfp_t
);
1192 struct nfs4_opendata
*p
;
1194 p
= kzalloc(sizeof(*p
), gfp_mask
);
1198 p
->f_label
= nfs4_label_alloc(server
, gfp_mask
);
1199 if (IS_ERR(p
->f_label
))
1202 p
->a_label
= nfs4_label_alloc(server
, gfp_mask
);
1203 if (IS_ERR(p
->a_label
))
1206 alloc_seqid
= server
->nfs_client
->cl_mvops
->alloc_seqid
;
1207 p
->o_arg
.seqid
= alloc_seqid(&sp
->so_seqid
, gfp_mask
);
1208 if (IS_ERR(p
->o_arg
.seqid
))
1209 goto err_free_label
;
1210 nfs_sb_active(dentry
->d_sb
);
1211 p
->dentry
= dget(dentry
);
1214 atomic_inc(&sp
->so_count
);
1215 p
->o_arg
.open_flags
= flags
;
1216 p
->o_arg
.fmode
= fmode
& (FMODE_READ
|FMODE_WRITE
);
1217 p
->o_arg
.share_access
= nfs4_map_atomic_open_share(server
,
1219 /* don't put an ACCESS op in OPEN compound if O_EXCL, because ACCESS
1220 * will return permission denied for all bits until close */
1221 if (!(flags
& O_EXCL
)) {
1222 /* ask server to check for all possible rights as results
1224 p
->o_arg
.access
= NFS4_ACCESS_READ
| NFS4_ACCESS_MODIFY
|
1225 NFS4_ACCESS_EXTEND
| NFS4_ACCESS_EXECUTE
;
1227 p
->o_arg
.clientid
= server
->nfs_client
->cl_clientid
;
1228 p
->o_arg
.id
.create_time
= ktime_to_ns(sp
->so_seqid
.create_time
);
1229 p
->o_arg
.id
.uniquifier
= sp
->so_seqid
.owner_id
;
1230 p
->o_arg
.name
= &dentry
->d_name
;
1231 p
->o_arg
.server
= server
;
1232 p
->o_arg
.bitmask
= nfs4_bitmask(server
, label
);
1233 p
->o_arg
.open_bitmap
= &nfs4_fattr_bitmap
[0];
1234 p
->o_arg
.label
= nfs4_label_copy(p
->a_label
, label
);
1235 p
->o_arg
.claim
= nfs4_map_atomic_open_claim(server
, claim
);
1236 switch (p
->o_arg
.claim
) {
1237 case NFS4_OPEN_CLAIM_NULL
:
1238 case NFS4_OPEN_CLAIM_DELEGATE_CUR
:
1239 case NFS4_OPEN_CLAIM_DELEGATE_PREV
:
1240 p
->o_arg
.fh
= NFS_FH(dir
);
1242 case NFS4_OPEN_CLAIM_PREVIOUS
:
1243 case NFS4_OPEN_CLAIM_FH
:
1244 case NFS4_OPEN_CLAIM_DELEG_CUR_FH
:
1245 case NFS4_OPEN_CLAIM_DELEG_PREV_FH
:
1246 p
->o_arg
.fh
= NFS_FH(d_inode(dentry
));
1248 if (attrs
!= NULL
&& attrs
->ia_valid
!= 0) {
1251 p
->o_arg
.u
.attrs
= &p
->attrs
;
1252 memcpy(&p
->attrs
, attrs
, sizeof(p
->attrs
));
1255 verf
[1] = current
->pid
;
1256 memcpy(p
->o_arg
.u
.verifier
.data
, verf
,
1257 sizeof(p
->o_arg
.u
.verifier
.data
));
1259 p
->c_arg
.fh
= &p
->o_res
.fh
;
1260 p
->c_arg
.stateid
= &p
->o_res
.stateid
;
1261 p
->c_arg
.seqid
= p
->o_arg
.seqid
;
1262 nfs4_init_opendata_res(p
);
1263 kref_init(&p
->kref
);
1267 nfs4_label_free(p
->a_label
);
1269 nfs4_label_free(p
->f_label
);
1277 static void nfs4_opendata_free(struct kref
*kref
)
1279 struct nfs4_opendata
*p
= container_of(kref
,
1280 struct nfs4_opendata
, kref
);
1281 struct super_block
*sb
= p
->dentry
->d_sb
;
1283 nfs_free_seqid(p
->o_arg
.seqid
);
1284 nfs4_sequence_free_slot(&p
->o_res
.seq_res
);
1285 if (p
->state
!= NULL
)
1286 nfs4_put_open_state(p
->state
);
1287 nfs4_put_state_owner(p
->owner
);
1289 nfs4_label_free(p
->a_label
);
1290 nfs4_label_free(p
->f_label
);
1294 nfs_sb_deactive(sb
);
1295 nfs_fattr_free_names(&p
->f_attr
);
1296 kfree(p
->f_attr
.mdsthreshold
);
1300 static void nfs4_opendata_put(struct nfs4_opendata
*p
)
1303 kref_put(&p
->kref
, nfs4_opendata_free
);
1306 static int nfs4_wait_for_completion_rpc_task(struct rpc_task
*task
)
1310 ret
= rpc_wait_for_completion_task(task
);
1314 static bool nfs4_mode_match_open_stateid(struct nfs4_state
*state
,
1317 switch(fmode
& (FMODE_READ
|FMODE_WRITE
)) {
1318 case FMODE_READ
|FMODE_WRITE
:
1319 return state
->n_rdwr
!= 0;
1321 return state
->n_wronly
!= 0;
1323 return state
->n_rdonly
!= 0;
1329 static int can_open_cached(struct nfs4_state
*state
, fmode_t mode
, int open_mode
)
1333 if (open_mode
& (O_EXCL
|O_TRUNC
))
1335 switch (mode
& (FMODE_READ
|FMODE_WRITE
)) {
1337 ret
|= test_bit(NFS_O_RDONLY_STATE
, &state
->flags
) != 0
1338 && state
->n_rdonly
!= 0;
1341 ret
|= test_bit(NFS_O_WRONLY_STATE
, &state
->flags
) != 0
1342 && state
->n_wronly
!= 0;
1344 case FMODE_READ
|FMODE_WRITE
:
1345 ret
|= test_bit(NFS_O_RDWR_STATE
, &state
->flags
) != 0
1346 && state
->n_rdwr
!= 0;
1352 static int can_open_delegated(struct nfs_delegation
*delegation
, fmode_t fmode
,
1353 enum open_claim_type4 claim
)
1355 if (delegation
== NULL
)
1357 if ((delegation
->type
& fmode
) != fmode
)
1359 if (test_bit(NFS_DELEGATION_RETURNING
, &delegation
->flags
))
1362 case NFS4_OPEN_CLAIM_NULL
:
1363 case NFS4_OPEN_CLAIM_FH
:
1365 case NFS4_OPEN_CLAIM_PREVIOUS
:
1366 if (!test_bit(NFS_DELEGATION_NEED_RECLAIM
, &delegation
->flags
))
1371 nfs_mark_delegation_referenced(delegation
);
1375 static void update_open_stateflags(struct nfs4_state
*state
, fmode_t fmode
)
1384 case FMODE_READ
|FMODE_WRITE
:
1387 nfs4_state_set_mode_locked(state
, state
->state
| fmode
);
1390 static void nfs_test_and_clear_all_open_stateid(struct nfs4_state
*state
)
1392 struct nfs_client
*clp
= state
->owner
->so_server
->nfs_client
;
1393 bool need_recover
= false;
1395 if (test_and_clear_bit(NFS_O_RDONLY_STATE
, &state
->flags
) && state
->n_rdonly
)
1396 need_recover
= true;
1397 if (test_and_clear_bit(NFS_O_WRONLY_STATE
, &state
->flags
) && state
->n_wronly
)
1398 need_recover
= true;
1399 if (test_and_clear_bit(NFS_O_RDWR_STATE
, &state
->flags
) && state
->n_rdwr
)
1400 need_recover
= true;
1402 nfs4_state_mark_reclaim_nograce(clp
, state
);
1405 static bool nfs_need_update_open_stateid(struct nfs4_state
*state
,
1406 const nfs4_stateid
*stateid
, nfs4_stateid
*freeme
)
1408 if (test_and_set_bit(NFS_OPEN_STATE
, &state
->flags
) == 0)
1410 if (!nfs4_stateid_match_other(stateid
, &state
->open_stateid
)) {
1411 nfs4_stateid_copy(freeme
, &state
->open_stateid
);
1412 nfs_test_and_clear_all_open_stateid(state
);
1415 if (nfs4_stateid_is_newer(stateid
, &state
->open_stateid
))
1420 static void nfs_resync_open_stateid_locked(struct nfs4_state
*state
)
1422 if (!(state
->n_wronly
|| state
->n_rdonly
|| state
->n_rdwr
))
1424 if (state
->n_wronly
)
1425 set_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
1426 if (state
->n_rdonly
)
1427 set_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
1429 set_bit(NFS_O_RDWR_STATE
, &state
->flags
);
1430 set_bit(NFS_OPEN_STATE
, &state
->flags
);
1433 static void nfs_clear_open_stateid_locked(struct nfs4_state
*state
,
1434 nfs4_stateid
*arg_stateid
,
1435 nfs4_stateid
*stateid
, fmode_t fmode
)
1437 clear_bit(NFS_O_RDWR_STATE
, &state
->flags
);
1438 switch (fmode
& (FMODE_READ
|FMODE_WRITE
)) {
1440 clear_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
1443 clear_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
1446 clear_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
1447 clear_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
1448 clear_bit(NFS_OPEN_STATE
, &state
->flags
);
1450 if (stateid
== NULL
)
1452 /* Handle races with OPEN */
1453 if (!nfs4_stateid_match_other(arg_stateid
, &state
->open_stateid
) ||
1454 (nfs4_stateid_match_other(stateid
, &state
->open_stateid
) &&
1455 !nfs4_stateid_is_newer(stateid
, &state
->open_stateid
))) {
1456 nfs_resync_open_stateid_locked(state
);
1459 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) == 0)
1460 nfs4_stateid_copy(&state
->stateid
, stateid
);
1461 nfs4_stateid_copy(&state
->open_stateid
, stateid
);
1464 static void nfs_clear_open_stateid(struct nfs4_state
*state
,
1465 nfs4_stateid
*arg_stateid
,
1466 nfs4_stateid
*stateid
, fmode_t fmode
)
1468 write_seqlock(&state
->seqlock
);
1469 nfs_clear_open_stateid_locked(state
, arg_stateid
, stateid
, fmode
);
1470 write_sequnlock(&state
->seqlock
);
1471 if (test_bit(NFS_STATE_RECLAIM_NOGRACE
, &state
->flags
))
1472 nfs4_schedule_state_manager(state
->owner
->so_server
->nfs_client
);
1475 static void nfs_set_open_stateid_locked(struct nfs4_state
*state
,
1476 const nfs4_stateid
*stateid
, fmode_t fmode
,
1477 nfs4_stateid
*freeme
)
1481 set_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
1484 set_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
1486 case FMODE_READ
|FMODE_WRITE
:
1487 set_bit(NFS_O_RDWR_STATE
, &state
->flags
);
1489 if (!nfs_need_update_open_stateid(state
, stateid
, freeme
))
1491 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) == 0)
1492 nfs4_stateid_copy(&state
->stateid
, stateid
);
1493 nfs4_stateid_copy(&state
->open_stateid
, stateid
);
1496 static void __update_open_stateid(struct nfs4_state
*state
,
1497 const nfs4_stateid
*open_stateid
,
1498 const nfs4_stateid
*deleg_stateid
,
1500 nfs4_stateid
*freeme
)
1503 * Protect the call to nfs4_state_set_mode_locked and
1504 * serialise the stateid update
1506 spin_lock(&state
->owner
->so_lock
);
1507 write_seqlock(&state
->seqlock
);
1508 if (deleg_stateid
!= NULL
) {
1509 nfs4_stateid_copy(&state
->stateid
, deleg_stateid
);
1510 set_bit(NFS_DELEGATED_STATE
, &state
->flags
);
1512 if (open_stateid
!= NULL
)
1513 nfs_set_open_stateid_locked(state
, open_stateid
, fmode
, freeme
);
1514 write_sequnlock(&state
->seqlock
);
1515 update_open_stateflags(state
, fmode
);
1516 spin_unlock(&state
->owner
->so_lock
);
1519 static int update_open_stateid(struct nfs4_state
*state
,
1520 const nfs4_stateid
*open_stateid
,
1521 const nfs4_stateid
*delegation
,
1524 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
1525 struct nfs_client
*clp
= server
->nfs_client
;
1526 struct nfs_inode
*nfsi
= NFS_I(state
->inode
);
1527 struct nfs_delegation
*deleg_cur
;
1528 nfs4_stateid freeme
= {0};
1531 fmode
&= (FMODE_READ
|FMODE_WRITE
);
1534 deleg_cur
= rcu_dereference(nfsi
->delegation
);
1535 if (deleg_cur
== NULL
)
1538 spin_lock(&deleg_cur
->lock
);
1539 if (rcu_dereference(nfsi
->delegation
) != deleg_cur
||
1540 test_bit(NFS_DELEGATION_RETURNING
, &deleg_cur
->flags
) ||
1541 (deleg_cur
->type
& fmode
) != fmode
)
1542 goto no_delegation_unlock
;
1544 if (delegation
== NULL
)
1545 delegation
= &deleg_cur
->stateid
;
1546 else if (!nfs4_stateid_match(&deleg_cur
->stateid
, delegation
))
1547 goto no_delegation_unlock
;
1549 nfs_mark_delegation_referenced(deleg_cur
);
1550 __update_open_stateid(state
, open_stateid
, &deleg_cur
->stateid
,
1553 no_delegation_unlock
:
1554 spin_unlock(&deleg_cur
->lock
);
1558 if (!ret
&& open_stateid
!= NULL
) {
1559 __update_open_stateid(state
, open_stateid
, NULL
, fmode
, &freeme
);
1562 if (test_bit(NFS_STATE_RECLAIM_NOGRACE
, &state
->flags
))
1563 nfs4_schedule_state_manager(clp
);
1564 if (freeme
.type
!= 0)
1565 nfs4_test_and_free_stateid(server
, &freeme
,
1566 state
->owner
->so_cred
);
1571 static bool nfs4_update_lock_stateid(struct nfs4_lock_state
*lsp
,
1572 const nfs4_stateid
*stateid
)
1574 struct nfs4_state
*state
= lsp
->ls_state
;
1577 spin_lock(&state
->state_lock
);
1578 if (!nfs4_stateid_match_other(stateid
, &lsp
->ls_stateid
))
1580 if (!nfs4_stateid_is_newer(stateid
, &lsp
->ls_stateid
))
1582 nfs4_stateid_copy(&lsp
->ls_stateid
, stateid
);
1585 spin_unlock(&state
->state_lock
);
1589 static void nfs4_return_incompatible_delegation(struct inode
*inode
, fmode_t fmode
)
1591 struct nfs_delegation
*delegation
;
1594 delegation
= rcu_dereference(NFS_I(inode
)->delegation
);
1595 if (delegation
== NULL
|| (delegation
->type
& fmode
) == fmode
) {
1600 nfs4_inode_return_delegation(inode
);
1603 static struct nfs4_state
*nfs4_try_open_cached(struct nfs4_opendata
*opendata
)
1605 struct nfs4_state
*state
= opendata
->state
;
1606 struct nfs_inode
*nfsi
= NFS_I(state
->inode
);
1607 struct nfs_delegation
*delegation
;
1608 int open_mode
= opendata
->o_arg
.open_flags
;
1609 fmode_t fmode
= opendata
->o_arg
.fmode
;
1610 enum open_claim_type4 claim
= opendata
->o_arg
.claim
;
1611 nfs4_stateid stateid
;
1615 spin_lock(&state
->owner
->so_lock
);
1616 if (can_open_cached(state
, fmode
, open_mode
)) {
1617 update_open_stateflags(state
, fmode
);
1618 spin_unlock(&state
->owner
->so_lock
);
1619 goto out_return_state
;
1621 spin_unlock(&state
->owner
->so_lock
);
1623 delegation
= rcu_dereference(nfsi
->delegation
);
1624 if (!can_open_delegated(delegation
, fmode
, claim
)) {
1628 /* Save the delegation */
1629 nfs4_stateid_copy(&stateid
, &delegation
->stateid
);
1631 nfs_release_seqid(opendata
->o_arg
.seqid
);
1632 if (!opendata
->is_recover
) {
1633 ret
= nfs_may_open(state
->inode
, state
->owner
->so_cred
, open_mode
);
1639 /* Try to update the stateid using the delegation */
1640 if (update_open_stateid(state
, NULL
, &stateid
, fmode
))
1641 goto out_return_state
;
1644 return ERR_PTR(ret
);
1646 atomic_inc(&state
->count
);
1651 nfs4_opendata_check_deleg(struct nfs4_opendata
*data
, struct nfs4_state
*state
)
1653 struct nfs_client
*clp
= NFS_SERVER(state
->inode
)->nfs_client
;
1654 struct nfs_delegation
*delegation
;
1655 int delegation_flags
= 0;
1658 delegation
= rcu_dereference(NFS_I(state
->inode
)->delegation
);
1660 delegation_flags
= delegation
->flags
;
1662 switch (data
->o_arg
.claim
) {
1665 case NFS4_OPEN_CLAIM_DELEGATE_CUR
:
1666 case NFS4_OPEN_CLAIM_DELEG_CUR_FH
:
1667 pr_err_ratelimited("NFS: Broken NFSv4 server %s is "
1668 "returning a delegation for "
1669 "OPEN(CLAIM_DELEGATE_CUR)\n",
1673 if ((delegation_flags
& 1UL<<NFS_DELEGATION_NEED_RECLAIM
) == 0)
1674 nfs_inode_set_delegation(state
->inode
,
1675 data
->owner
->so_cred
,
1678 nfs_inode_reclaim_delegation(state
->inode
,
1679 data
->owner
->so_cred
,
1684 * Check the inode attributes against the CLAIM_PREVIOUS returned attributes
1685 * and update the nfs4_state.
1687 static struct nfs4_state
*
1688 _nfs4_opendata_reclaim_to_nfs4_state(struct nfs4_opendata
*data
)
1690 struct inode
*inode
= data
->state
->inode
;
1691 struct nfs4_state
*state
= data
->state
;
1694 if (!data
->rpc_done
) {
1695 if (data
->rpc_status
) {
1696 ret
= data
->rpc_status
;
1699 /* cached opens have already been processed */
1703 ret
= nfs_refresh_inode(inode
, &data
->f_attr
);
1707 if (data
->o_res
.delegation_type
!= 0)
1708 nfs4_opendata_check_deleg(data
, state
);
1710 update_open_stateid(state
, &data
->o_res
.stateid
, NULL
,
1712 atomic_inc(&state
->count
);
1716 return ERR_PTR(ret
);
1720 static struct nfs4_state
*
1721 _nfs4_opendata_to_nfs4_state(struct nfs4_opendata
*data
)
1723 struct inode
*inode
;
1724 struct nfs4_state
*state
= NULL
;
1727 if (!data
->rpc_done
) {
1728 state
= nfs4_try_open_cached(data
);
1729 trace_nfs4_cached_open(data
->state
);
1734 if (!(data
->f_attr
.valid
& NFS_ATTR_FATTR
))
1736 inode
= nfs_fhget(data
->dir
->d_sb
, &data
->o_res
.fh
, &data
->f_attr
, data
->f_label
);
1737 ret
= PTR_ERR(inode
);
1741 state
= nfs4_get_open_state(inode
, data
->owner
);
1744 if (data
->o_res
.delegation_type
!= 0)
1745 nfs4_opendata_check_deleg(data
, state
);
1746 update_open_stateid(state
, &data
->o_res
.stateid
, NULL
,
1750 nfs_release_seqid(data
->o_arg
.seqid
);
1755 return ERR_PTR(ret
);
1758 static struct nfs4_state
*
1759 nfs4_opendata_to_nfs4_state(struct nfs4_opendata
*data
)
1761 struct nfs4_state
*ret
;
1763 if (data
->o_arg
.claim
== NFS4_OPEN_CLAIM_PREVIOUS
)
1764 ret
=_nfs4_opendata_reclaim_to_nfs4_state(data
);
1766 ret
= _nfs4_opendata_to_nfs4_state(data
);
1767 nfs4_sequence_free_slot(&data
->o_res
.seq_res
);
1771 static struct nfs_open_context
*nfs4_state_find_open_context(struct nfs4_state
*state
)
1773 struct nfs_inode
*nfsi
= NFS_I(state
->inode
);
1774 struct nfs_open_context
*ctx
;
1776 spin_lock(&state
->inode
->i_lock
);
1777 list_for_each_entry(ctx
, &nfsi
->open_files
, list
) {
1778 if (ctx
->state
!= state
)
1780 get_nfs_open_context(ctx
);
1781 spin_unlock(&state
->inode
->i_lock
);
1784 spin_unlock(&state
->inode
->i_lock
);
1785 return ERR_PTR(-ENOENT
);
1788 static struct nfs4_opendata
*nfs4_open_recoverdata_alloc(struct nfs_open_context
*ctx
,
1789 struct nfs4_state
*state
, enum open_claim_type4 claim
)
1791 struct nfs4_opendata
*opendata
;
1793 opendata
= nfs4_opendata_alloc(ctx
->dentry
, state
->owner
, 0, 0,
1794 NULL
, NULL
, claim
, GFP_NOFS
);
1795 if (opendata
== NULL
)
1796 return ERR_PTR(-ENOMEM
);
1797 opendata
->state
= state
;
1798 atomic_inc(&state
->count
);
1802 static int nfs4_open_recover_helper(struct nfs4_opendata
*opendata
,
1805 struct nfs4_state
*newstate
;
1808 if (!nfs4_mode_match_open_stateid(opendata
->state
, fmode
))
1810 opendata
->o_arg
.open_flags
= 0;
1811 opendata
->o_arg
.fmode
= fmode
;
1812 opendata
->o_arg
.share_access
= nfs4_map_atomic_open_share(
1813 NFS_SB(opendata
->dentry
->d_sb
),
1815 memset(&opendata
->o_res
, 0, sizeof(opendata
->o_res
));
1816 memset(&opendata
->c_res
, 0, sizeof(opendata
->c_res
));
1817 nfs4_init_opendata_res(opendata
);
1818 ret
= _nfs4_recover_proc_open(opendata
);
1821 newstate
= nfs4_opendata_to_nfs4_state(opendata
);
1822 if (IS_ERR(newstate
))
1823 return PTR_ERR(newstate
);
1824 if (newstate
!= opendata
->state
)
1826 nfs4_close_state(newstate
, fmode
);
1830 static int nfs4_open_recover(struct nfs4_opendata
*opendata
, struct nfs4_state
*state
)
1834 /* Don't trigger recovery in nfs_test_and_clear_all_open_stateid */
1835 clear_bit(NFS_O_RDWR_STATE
, &state
->flags
);
1836 clear_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
1837 clear_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
1838 /* memory barrier prior to reading state->n_* */
1839 clear_bit(NFS_DELEGATED_STATE
, &state
->flags
);
1840 clear_bit(NFS_OPEN_STATE
, &state
->flags
);
1842 ret
= nfs4_open_recover_helper(opendata
, FMODE_READ
|FMODE_WRITE
);
1845 ret
= nfs4_open_recover_helper(opendata
, FMODE_WRITE
);
1848 ret
= nfs4_open_recover_helper(opendata
, FMODE_READ
);
1852 * We may have performed cached opens for all three recoveries.
1853 * Check if we need to update the current stateid.
1855 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) == 0 &&
1856 !nfs4_stateid_match(&state
->stateid
, &state
->open_stateid
)) {
1857 write_seqlock(&state
->seqlock
);
1858 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) == 0)
1859 nfs4_stateid_copy(&state
->stateid
, &state
->open_stateid
);
1860 write_sequnlock(&state
->seqlock
);
1867 * reclaim state on the server after a reboot.
1869 static int _nfs4_do_open_reclaim(struct nfs_open_context
*ctx
, struct nfs4_state
*state
)
1871 struct nfs_delegation
*delegation
;
1872 struct nfs4_opendata
*opendata
;
1873 fmode_t delegation_type
= 0;
1876 opendata
= nfs4_open_recoverdata_alloc(ctx
, state
,
1877 NFS4_OPEN_CLAIM_PREVIOUS
);
1878 if (IS_ERR(opendata
))
1879 return PTR_ERR(opendata
);
1881 delegation
= rcu_dereference(NFS_I(state
->inode
)->delegation
);
1882 if (delegation
!= NULL
&& test_bit(NFS_DELEGATION_NEED_RECLAIM
, &delegation
->flags
) != 0)
1883 delegation_type
= delegation
->type
;
1885 opendata
->o_arg
.u
.delegation_type
= delegation_type
;
1886 status
= nfs4_open_recover(opendata
, state
);
1887 nfs4_opendata_put(opendata
);
1891 static int nfs4_do_open_reclaim(struct nfs_open_context
*ctx
, struct nfs4_state
*state
)
1893 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
1894 struct nfs4_exception exception
= { };
1897 err
= _nfs4_do_open_reclaim(ctx
, state
);
1898 trace_nfs4_open_reclaim(ctx
, 0, err
);
1899 if (nfs4_clear_cap_atomic_open_v1(server
, err
, &exception
))
1901 if (err
!= -NFS4ERR_DELAY
)
1903 nfs4_handle_exception(server
, err
, &exception
);
1904 } while (exception
.retry
);
1908 static int nfs4_open_reclaim(struct nfs4_state_owner
*sp
, struct nfs4_state
*state
)
1910 struct nfs_open_context
*ctx
;
1913 ctx
= nfs4_state_find_open_context(state
);
1916 ret
= nfs4_do_open_reclaim(ctx
, state
);
1917 put_nfs_open_context(ctx
);
1921 static int nfs4_handle_delegation_recall_error(struct nfs_server
*server
, struct nfs4_state
*state
, const nfs4_stateid
*stateid
, int err
)
1925 printk(KERN_ERR
"NFS: %s: unhandled error "
1926 "%d.\n", __func__
, err
);
1932 case -NFS4ERR_BADSESSION
:
1933 case -NFS4ERR_BADSLOT
:
1934 case -NFS4ERR_BAD_HIGH_SLOT
:
1935 case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION
:
1936 case -NFS4ERR_DEADSESSION
:
1937 set_bit(NFS_DELEGATED_STATE
, &state
->flags
);
1938 nfs4_schedule_session_recovery(server
->nfs_client
->cl_session
, err
);
1940 case -NFS4ERR_STALE_CLIENTID
:
1941 case -NFS4ERR_STALE_STATEID
:
1942 set_bit(NFS_DELEGATED_STATE
, &state
->flags
);
1943 /* Don't recall a delegation if it was lost */
1944 nfs4_schedule_lease_recovery(server
->nfs_client
);
1946 case -NFS4ERR_MOVED
:
1947 nfs4_schedule_migration_recovery(server
);
1949 case -NFS4ERR_LEASE_MOVED
:
1950 nfs4_schedule_lease_moved_recovery(server
->nfs_client
);
1952 case -NFS4ERR_DELEG_REVOKED
:
1953 case -NFS4ERR_ADMIN_REVOKED
:
1954 case -NFS4ERR_EXPIRED
:
1955 case -NFS4ERR_BAD_STATEID
:
1956 case -NFS4ERR_OPENMODE
:
1957 nfs_inode_find_state_and_recover(state
->inode
,
1959 nfs4_schedule_stateid_recovery(server
, state
);
1961 case -NFS4ERR_DELAY
:
1962 case -NFS4ERR_GRACE
:
1963 set_bit(NFS_DELEGATED_STATE
, &state
->flags
);
1967 case -NFS4ERR_DENIED
:
1968 /* kill_proc(fl->fl_pid, SIGLOST, 1); */
1974 int nfs4_open_delegation_recall(struct nfs_open_context
*ctx
,
1975 struct nfs4_state
*state
, const nfs4_stateid
*stateid
,
1978 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
1979 struct nfs4_opendata
*opendata
;
1982 opendata
= nfs4_open_recoverdata_alloc(ctx
, state
,
1983 NFS4_OPEN_CLAIM_DELEG_CUR_FH
);
1984 if (IS_ERR(opendata
))
1985 return PTR_ERR(opendata
);
1986 nfs4_stateid_copy(&opendata
->o_arg
.u
.delegation
, stateid
);
1987 write_seqlock(&state
->seqlock
);
1988 nfs4_stateid_copy(&state
->stateid
, &state
->open_stateid
);
1989 write_sequnlock(&state
->seqlock
);
1990 clear_bit(NFS_DELEGATED_STATE
, &state
->flags
);
1991 switch (type
& (FMODE_READ
|FMODE_WRITE
)) {
1992 case FMODE_READ
|FMODE_WRITE
:
1994 err
= nfs4_open_recover_helper(opendata
, FMODE_READ
|FMODE_WRITE
);
1997 err
= nfs4_open_recover_helper(opendata
, FMODE_WRITE
);
2001 err
= nfs4_open_recover_helper(opendata
, FMODE_READ
);
2003 nfs4_opendata_put(opendata
);
2004 return nfs4_handle_delegation_recall_error(server
, state
, stateid
, err
);
2007 static void nfs4_open_confirm_prepare(struct rpc_task
*task
, void *calldata
)
2009 struct nfs4_opendata
*data
= calldata
;
2011 nfs40_setup_sequence(data
->o_arg
.server
->nfs_client
->cl_slot_tbl
,
2012 &data
->c_arg
.seq_args
, &data
->c_res
.seq_res
, task
);
2015 static void nfs4_open_confirm_done(struct rpc_task
*task
, void *calldata
)
2017 struct nfs4_opendata
*data
= calldata
;
2019 nfs40_sequence_done(task
, &data
->c_res
.seq_res
);
2021 data
->rpc_status
= task
->tk_status
;
2022 if (data
->rpc_status
== 0) {
2023 nfs4_stateid_copy(&data
->o_res
.stateid
, &data
->c_res
.stateid
);
2024 nfs_confirm_seqid(&data
->owner
->so_seqid
, 0);
2025 renew_lease(data
->o_res
.server
, data
->timestamp
);
2030 static void nfs4_open_confirm_release(void *calldata
)
2032 struct nfs4_opendata
*data
= calldata
;
2033 struct nfs4_state
*state
= NULL
;
2035 /* If this request hasn't been cancelled, do nothing */
2036 if (data
->cancelled
== 0)
2038 /* In case of error, no cleanup! */
2039 if (!data
->rpc_done
)
2041 state
= nfs4_opendata_to_nfs4_state(data
);
2043 nfs4_close_state(state
, data
->o_arg
.fmode
);
2045 nfs4_opendata_put(data
);
2048 static const struct rpc_call_ops nfs4_open_confirm_ops
= {
2049 .rpc_call_prepare
= nfs4_open_confirm_prepare
,
2050 .rpc_call_done
= nfs4_open_confirm_done
,
2051 .rpc_release
= nfs4_open_confirm_release
,
2055 * Note: On error, nfs4_proc_open_confirm will free the struct nfs4_opendata
2057 static int _nfs4_proc_open_confirm(struct nfs4_opendata
*data
)
2059 struct nfs_server
*server
= NFS_SERVER(d_inode(data
->dir
));
2060 struct rpc_task
*task
;
2061 struct rpc_message msg
= {
2062 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_OPEN_CONFIRM
],
2063 .rpc_argp
= &data
->c_arg
,
2064 .rpc_resp
= &data
->c_res
,
2065 .rpc_cred
= data
->owner
->so_cred
,
2067 struct rpc_task_setup task_setup_data
= {
2068 .rpc_client
= server
->client
,
2069 .rpc_message
= &msg
,
2070 .callback_ops
= &nfs4_open_confirm_ops
,
2071 .callback_data
= data
,
2072 .workqueue
= nfsiod_workqueue
,
2073 .flags
= RPC_TASK_ASYNC
,
2077 nfs4_init_sequence(&data
->c_arg
.seq_args
, &data
->c_res
.seq_res
, 1);
2078 kref_get(&data
->kref
);
2080 data
->rpc_status
= 0;
2081 data
->timestamp
= jiffies
;
2082 if (data
->is_recover
)
2083 nfs4_set_sequence_privileged(&data
->c_arg
.seq_args
);
2084 task
= rpc_run_task(&task_setup_data
);
2086 return PTR_ERR(task
);
2087 status
= nfs4_wait_for_completion_rpc_task(task
);
2089 data
->cancelled
= 1;
2092 status
= data
->rpc_status
;
2097 static void nfs4_open_prepare(struct rpc_task
*task
, void *calldata
)
2099 struct nfs4_opendata
*data
= calldata
;
2100 struct nfs4_state_owner
*sp
= data
->owner
;
2101 struct nfs_client
*clp
= sp
->so_server
->nfs_client
;
2102 enum open_claim_type4 claim
= data
->o_arg
.claim
;
2104 if (nfs_wait_on_sequence(data
->o_arg
.seqid
, task
) != 0)
2107 * Check if we still need to send an OPEN call, or if we can use
2108 * a delegation instead.
2110 if (data
->state
!= NULL
) {
2111 struct nfs_delegation
*delegation
;
2113 if (can_open_cached(data
->state
, data
->o_arg
.fmode
, data
->o_arg
.open_flags
))
2116 delegation
= rcu_dereference(NFS_I(data
->state
->inode
)->delegation
);
2117 if (can_open_delegated(delegation
, data
->o_arg
.fmode
, claim
))
2118 goto unlock_no_action
;
2121 /* Update client id. */
2122 data
->o_arg
.clientid
= clp
->cl_clientid
;
2126 case NFS4_OPEN_CLAIM_PREVIOUS
:
2127 case NFS4_OPEN_CLAIM_DELEG_CUR_FH
:
2128 case NFS4_OPEN_CLAIM_DELEG_PREV_FH
:
2129 data
->o_arg
.open_bitmap
= &nfs4_open_noattr_bitmap
[0];
2130 case NFS4_OPEN_CLAIM_FH
:
2131 task
->tk_msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_OPEN_NOATTR
];
2132 nfs_copy_fh(&data
->o_res
.fh
, data
->o_arg
.fh
);
2134 data
->timestamp
= jiffies
;
2135 if (nfs4_setup_sequence(data
->o_arg
.server
,
2136 &data
->o_arg
.seq_args
,
2137 &data
->o_res
.seq_res
,
2139 nfs_release_seqid(data
->o_arg
.seqid
);
2141 /* Set the create mode (note dependency on the session type) */
2142 data
->o_arg
.createmode
= NFS4_CREATE_UNCHECKED
;
2143 if (data
->o_arg
.open_flags
& O_EXCL
) {
2144 data
->o_arg
.createmode
= NFS4_CREATE_EXCLUSIVE
;
2145 if (nfs4_has_persistent_session(clp
))
2146 data
->o_arg
.createmode
= NFS4_CREATE_GUARDED
;
2147 else if (clp
->cl_mvops
->minor_version
> 0)
2148 data
->o_arg
.createmode
= NFS4_CREATE_EXCLUSIVE4_1
;
2152 trace_nfs4_cached_open(data
->state
);
2155 task
->tk_action
= NULL
;
2157 nfs4_sequence_done(task
, &data
->o_res
.seq_res
);
2160 static void nfs4_open_done(struct rpc_task
*task
, void *calldata
)
2162 struct nfs4_opendata
*data
= calldata
;
2164 data
->rpc_status
= task
->tk_status
;
2166 if (!nfs4_sequence_process(task
, &data
->o_res
.seq_res
))
2169 if (task
->tk_status
== 0) {
2170 if (data
->o_res
.f_attr
->valid
& NFS_ATTR_FATTR_TYPE
) {
2171 switch (data
->o_res
.f_attr
->mode
& S_IFMT
) {
2175 data
->rpc_status
= -ELOOP
;
2178 data
->rpc_status
= -EISDIR
;
2181 data
->rpc_status
= -ENOTDIR
;
2184 renew_lease(data
->o_res
.server
, data
->timestamp
);
2185 if (!(data
->o_res
.rflags
& NFS4_OPEN_RESULT_CONFIRM
))
2186 nfs_confirm_seqid(&data
->owner
->so_seqid
, 0);
2191 static void nfs4_open_release(void *calldata
)
2193 struct nfs4_opendata
*data
= calldata
;
2194 struct nfs4_state
*state
= NULL
;
2196 /* If this request hasn't been cancelled, do nothing */
2197 if (data
->cancelled
== 0)
2199 /* In case of error, no cleanup! */
2200 if (data
->rpc_status
!= 0 || !data
->rpc_done
)
2202 /* In case we need an open_confirm, no cleanup! */
2203 if (data
->o_res
.rflags
& NFS4_OPEN_RESULT_CONFIRM
)
2205 state
= nfs4_opendata_to_nfs4_state(data
);
2207 nfs4_close_state(state
, data
->o_arg
.fmode
);
2209 nfs4_opendata_put(data
);
2212 static const struct rpc_call_ops nfs4_open_ops
= {
2213 .rpc_call_prepare
= nfs4_open_prepare
,
2214 .rpc_call_done
= nfs4_open_done
,
2215 .rpc_release
= nfs4_open_release
,
2218 static int nfs4_run_open_task(struct nfs4_opendata
*data
, int isrecover
)
2220 struct inode
*dir
= d_inode(data
->dir
);
2221 struct nfs_server
*server
= NFS_SERVER(dir
);
2222 struct nfs_openargs
*o_arg
= &data
->o_arg
;
2223 struct nfs_openres
*o_res
= &data
->o_res
;
2224 struct rpc_task
*task
;
2225 struct rpc_message msg
= {
2226 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_OPEN
],
2229 .rpc_cred
= data
->owner
->so_cred
,
2231 struct rpc_task_setup task_setup_data
= {
2232 .rpc_client
= server
->client
,
2233 .rpc_message
= &msg
,
2234 .callback_ops
= &nfs4_open_ops
,
2235 .callback_data
= data
,
2236 .workqueue
= nfsiod_workqueue
,
2237 .flags
= RPC_TASK_ASYNC
,
2241 nfs4_init_sequence(&o_arg
->seq_args
, &o_res
->seq_res
, 1);
2242 kref_get(&data
->kref
);
2244 data
->rpc_status
= 0;
2245 data
->cancelled
= 0;
2246 data
->is_recover
= 0;
2248 nfs4_set_sequence_privileged(&o_arg
->seq_args
);
2249 data
->is_recover
= 1;
2251 task
= rpc_run_task(&task_setup_data
);
2253 return PTR_ERR(task
);
2254 status
= nfs4_wait_for_completion_rpc_task(task
);
2256 data
->cancelled
= 1;
2259 status
= data
->rpc_status
;
2265 static int _nfs4_recover_proc_open(struct nfs4_opendata
*data
)
2267 struct inode
*dir
= d_inode(data
->dir
);
2268 struct nfs_openres
*o_res
= &data
->o_res
;
2271 status
= nfs4_run_open_task(data
, 1);
2272 if (status
!= 0 || !data
->rpc_done
)
2275 nfs_fattr_map_and_free_names(NFS_SERVER(dir
), &data
->f_attr
);
2277 if (o_res
->rflags
& NFS4_OPEN_RESULT_CONFIRM
) {
2278 status
= _nfs4_proc_open_confirm(data
);
2287 * Additional permission checks in order to distinguish between an
2288 * open for read, and an open for execute. This works around the
2289 * fact that NFSv4 OPEN treats read and execute permissions as being
2291 * Note that in the non-execute case, we want to turn off permission
2292 * checking if we just created a new file (POSIX open() semantics).
2294 static int nfs4_opendata_access(struct rpc_cred
*cred
,
2295 struct nfs4_opendata
*opendata
,
2296 struct nfs4_state
*state
, fmode_t fmode
,
2299 struct nfs_access_entry cache
;
2302 /* access call failed or for some reason the server doesn't
2303 * support any access modes -- defer access call until later */
2304 if (opendata
->o_res
.access_supported
== 0)
2309 * Use openflags to check for exec, because fmode won't
2310 * always have FMODE_EXEC set when file open for exec.
2312 if (openflags
& __FMODE_EXEC
) {
2313 /* ONLY check for exec rights */
2315 } else if ((fmode
& FMODE_READ
) && !opendata
->file_created
)
2319 cache
.jiffies
= jiffies
;
2320 nfs_access_set_mask(&cache
, opendata
->o_res
.access_result
);
2321 nfs_access_add_cache(state
->inode
, &cache
);
2323 if ((mask
& ~cache
.mask
& (MAY_READ
| MAY_EXEC
)) == 0)
2326 /* even though OPEN succeeded, access is denied. Close the file */
2327 nfs4_close_state(state
, fmode
);
2332 * Note: On error, nfs4_proc_open will free the struct nfs4_opendata
2334 static int _nfs4_proc_open(struct nfs4_opendata
*data
)
2336 struct inode
*dir
= d_inode(data
->dir
);
2337 struct nfs_server
*server
= NFS_SERVER(dir
);
2338 struct nfs_openargs
*o_arg
= &data
->o_arg
;
2339 struct nfs_openres
*o_res
= &data
->o_res
;
2342 status
= nfs4_run_open_task(data
, 0);
2343 if (!data
->rpc_done
)
2346 if (status
== -NFS4ERR_BADNAME
&&
2347 !(o_arg
->open_flags
& O_CREAT
))
2352 nfs_fattr_map_and_free_names(server
, &data
->f_attr
);
2354 if (o_arg
->open_flags
& O_CREAT
) {
2355 update_changeattr(dir
, &o_res
->cinfo
);
2356 if (o_arg
->open_flags
& O_EXCL
)
2357 data
->file_created
= 1;
2358 else if (o_res
->cinfo
.before
!= o_res
->cinfo
.after
)
2359 data
->file_created
= 1;
2361 if ((o_res
->rflags
& NFS4_OPEN_RESULT_LOCKTYPE_POSIX
) == 0)
2362 server
->caps
&= ~NFS_CAP_POSIX_LOCK
;
2363 if(o_res
->rflags
& NFS4_OPEN_RESULT_CONFIRM
) {
2364 status
= _nfs4_proc_open_confirm(data
);
2368 if (!(o_res
->f_attr
->valid
& NFS_ATTR_FATTR
))
2369 nfs4_proc_getattr(server
, &o_res
->fh
, o_res
->f_attr
, o_res
->f_label
);
2373 static int nfs4_recover_expired_lease(struct nfs_server
*server
)
2375 return nfs4_client_recover_expired_lease(server
->nfs_client
);
2380 * reclaim state on the server after a network partition.
2381 * Assumes caller holds the appropriate lock
2383 static int _nfs4_open_expired(struct nfs_open_context
*ctx
, struct nfs4_state
*state
)
2385 struct nfs4_opendata
*opendata
;
2388 opendata
= nfs4_open_recoverdata_alloc(ctx
, state
,
2389 NFS4_OPEN_CLAIM_FH
);
2390 if (IS_ERR(opendata
))
2391 return PTR_ERR(opendata
);
2392 ret
= nfs4_open_recover(opendata
, state
);
2394 d_drop(ctx
->dentry
);
2395 nfs4_opendata_put(opendata
);
2399 static int nfs4_do_open_expired(struct nfs_open_context
*ctx
, struct nfs4_state
*state
)
2401 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
2402 struct nfs4_exception exception
= { };
2406 err
= _nfs4_open_expired(ctx
, state
);
2407 trace_nfs4_open_expired(ctx
, 0, err
);
2408 if (nfs4_clear_cap_atomic_open_v1(server
, err
, &exception
))
2413 case -NFS4ERR_GRACE
:
2414 case -NFS4ERR_DELAY
:
2415 nfs4_handle_exception(server
, err
, &exception
);
2418 } while (exception
.retry
);
2423 static int nfs4_open_expired(struct nfs4_state_owner
*sp
, struct nfs4_state
*state
)
2425 struct nfs_open_context
*ctx
;
2428 ctx
= nfs4_state_find_open_context(state
);
2431 ret
= nfs4_do_open_expired(ctx
, state
);
2432 put_nfs_open_context(ctx
);
2436 static void nfs_finish_clear_delegation_stateid(struct nfs4_state
*state
,
2437 const nfs4_stateid
*stateid
)
2439 nfs_remove_bad_delegation(state
->inode
, stateid
);
2440 write_seqlock(&state
->seqlock
);
2441 nfs4_stateid_copy(&state
->stateid
, &state
->open_stateid
);
2442 write_sequnlock(&state
->seqlock
);
2443 clear_bit(NFS_DELEGATED_STATE
, &state
->flags
);
2446 static void nfs40_clear_delegation_stateid(struct nfs4_state
*state
)
2448 if (rcu_access_pointer(NFS_I(state
->inode
)->delegation
) != NULL
)
2449 nfs_finish_clear_delegation_stateid(state
, NULL
);
2452 static int nfs40_open_expired(struct nfs4_state_owner
*sp
, struct nfs4_state
*state
)
2454 /* NFSv4.0 doesn't allow for delegation recovery on open expire */
2455 nfs40_clear_delegation_stateid(state
);
2456 return nfs4_open_expired(sp
, state
);
2459 static int nfs40_test_and_free_expired_stateid(struct nfs_server
*server
,
2460 nfs4_stateid
*stateid
,
2461 struct rpc_cred
*cred
)
2463 return -NFS4ERR_BAD_STATEID
;
2466 #if defined(CONFIG_NFS_V4_1)
2467 static int nfs41_test_and_free_expired_stateid(struct nfs_server
*server
,
2468 nfs4_stateid
*stateid
,
2469 struct rpc_cred
*cred
)
2473 switch (stateid
->type
) {
2476 case NFS4_INVALID_STATEID_TYPE
:
2477 case NFS4_SPECIAL_STATEID_TYPE
:
2478 return -NFS4ERR_BAD_STATEID
;
2479 case NFS4_REVOKED_STATEID_TYPE
:
2483 status
= nfs41_test_stateid(server
, stateid
, cred
);
2485 case -NFS4ERR_EXPIRED
:
2486 case -NFS4ERR_ADMIN_REVOKED
:
2487 case -NFS4ERR_DELEG_REVOKED
:
2493 /* Ack the revoked state to the server */
2494 nfs41_free_stateid(server
, stateid
, cred
, true);
2495 return -NFS4ERR_EXPIRED
;
2498 static void nfs41_check_delegation_stateid(struct nfs4_state
*state
)
2500 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
2501 nfs4_stateid stateid
;
2502 struct nfs_delegation
*delegation
;
2503 struct rpc_cred
*cred
;
2506 /* Get the delegation credential for use by test/free_stateid */
2508 delegation
= rcu_dereference(NFS_I(state
->inode
)->delegation
);
2509 if (delegation
== NULL
) {
2514 nfs4_stateid_copy(&stateid
, &delegation
->stateid
);
2515 if (test_bit(NFS_DELEGATION_REVOKED
, &delegation
->flags
)) {
2517 nfs_finish_clear_delegation_stateid(state
, &stateid
);
2521 if (!test_and_clear_bit(NFS_DELEGATION_TEST_EXPIRED
, &delegation
->flags
)) {
2526 cred
= get_rpccred(delegation
->cred
);
2528 status
= nfs41_test_and_free_expired_stateid(server
, &stateid
, cred
);
2529 trace_nfs4_test_delegation_stateid(state
, NULL
, status
);
2530 if (status
== -NFS4ERR_EXPIRED
|| status
== -NFS4ERR_BAD_STATEID
)
2531 nfs_finish_clear_delegation_stateid(state
, &stateid
);
2537 * nfs41_check_expired_locks - possibly free a lock stateid
2539 * @state: NFSv4 state for an inode
2541 * Returns NFS_OK if recovery for this stateid is now finished.
2542 * Otherwise a negative NFS4ERR value is returned.
2544 static int nfs41_check_expired_locks(struct nfs4_state
*state
)
2546 int status
, ret
= NFS_OK
;
2547 struct nfs4_lock_state
*lsp
;
2548 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
2550 if (!test_bit(LK_STATE_IN_USE
, &state
->flags
))
2552 list_for_each_entry(lsp
, &state
->lock_states
, ls_locks
) {
2553 if (test_bit(NFS_LOCK_INITIALIZED
, &lsp
->ls_flags
)) {
2554 struct rpc_cred
*cred
= lsp
->ls_state
->owner
->so_cred
;
2556 status
= nfs41_test_and_free_expired_stateid(server
,
2559 trace_nfs4_test_lock_stateid(state
, lsp
, status
);
2560 if (status
== -NFS4ERR_EXPIRED
||
2561 status
== -NFS4ERR_BAD_STATEID
) {
2562 clear_bit(NFS_LOCK_INITIALIZED
, &lsp
->ls_flags
);
2563 lsp
->ls_stateid
.type
= NFS4_INVALID_STATEID_TYPE
;
2564 if (!recover_lost_locks
)
2565 set_bit(NFS_LOCK_LOST
, &lsp
->ls_flags
);
2566 } else if (status
!= NFS_OK
) {
2577 * nfs41_check_open_stateid - possibly free an open stateid
2579 * @state: NFSv4 state for an inode
2581 * Returns NFS_OK if recovery for this stateid is now finished.
2582 * Otherwise a negative NFS4ERR value is returned.
2584 static int nfs41_check_open_stateid(struct nfs4_state
*state
)
2586 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
2587 nfs4_stateid
*stateid
= &state
->open_stateid
;
2588 struct rpc_cred
*cred
= state
->owner
->so_cred
;
2591 if (test_bit(NFS_OPEN_STATE
, &state
->flags
) == 0) {
2592 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) == 0)
2594 return -NFS4ERR_BAD_STATEID
;
2596 /* If a state reset has been done, test_stateid is unneeded */
2597 if ((test_bit(NFS_O_RDONLY_STATE
, &state
->flags
) == 0) &&
2598 (test_bit(NFS_O_WRONLY_STATE
, &state
->flags
) == 0) &&
2599 (test_bit(NFS_O_RDWR_STATE
, &state
->flags
) == 0))
2600 return -NFS4ERR_BAD_STATEID
;
2602 status
= nfs41_test_and_free_expired_stateid(server
, stateid
, cred
);
2603 trace_nfs4_test_open_stateid(state
, NULL
, status
);
2604 if (status
== -NFS4ERR_EXPIRED
|| status
== -NFS4ERR_BAD_STATEID
) {
2605 clear_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
2606 clear_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
2607 clear_bit(NFS_O_RDWR_STATE
, &state
->flags
);
2608 clear_bit(NFS_OPEN_STATE
, &state
->flags
);
2609 stateid
->type
= NFS4_INVALID_STATEID_TYPE
;
2614 static int nfs41_open_expired(struct nfs4_state_owner
*sp
, struct nfs4_state
*state
)
2618 nfs41_check_delegation_stateid(state
);
2619 status
= nfs41_check_expired_locks(state
);
2620 if (status
!= NFS_OK
)
2622 status
= nfs41_check_open_stateid(state
);
2623 if (status
!= NFS_OK
)
2624 status
= nfs4_open_expired(sp
, state
);
2630 * on an EXCLUSIVE create, the server should send back a bitmask with FATTR4-*
2631 * fields corresponding to attributes that were used to store the verifier.
2632 * Make sure we clobber those fields in the later setattr call
2634 static inline void nfs4_exclusive_attrset(struct nfs4_opendata
*opendata
,
2635 struct iattr
*sattr
, struct nfs4_label
**label
)
2637 const u32
*attrset
= opendata
->o_res
.attrset
;
2639 if ((attrset
[1] & FATTR4_WORD1_TIME_ACCESS
) &&
2640 !(sattr
->ia_valid
& ATTR_ATIME_SET
))
2641 sattr
->ia_valid
|= ATTR_ATIME
;
2643 if ((attrset
[1] & FATTR4_WORD1_TIME_MODIFY
) &&
2644 !(sattr
->ia_valid
& ATTR_MTIME_SET
))
2645 sattr
->ia_valid
|= ATTR_MTIME
;
2647 /* Except MODE, it seems harmless of setting twice. */
2648 if ((attrset
[1] & FATTR4_WORD1_MODE
))
2649 sattr
->ia_valid
&= ~ATTR_MODE
;
2651 if (attrset
[2] & FATTR4_WORD2_SECURITY_LABEL
)
2655 static int _nfs4_open_and_get_state(struct nfs4_opendata
*opendata
,
2658 struct nfs_open_context
*ctx
)
2660 struct nfs4_state_owner
*sp
= opendata
->owner
;
2661 struct nfs_server
*server
= sp
->so_server
;
2662 struct dentry
*dentry
;
2663 struct nfs4_state
*state
;
2667 seq
= raw_seqcount_begin(&sp
->so_reclaim_seqcount
);
2669 ret
= _nfs4_proc_open(opendata
);
2673 state
= nfs4_opendata_to_nfs4_state(opendata
);
2674 ret
= PTR_ERR(state
);
2677 if (server
->caps
& NFS_CAP_POSIX_LOCK
)
2678 set_bit(NFS_STATE_POSIX_LOCKS
, &state
->flags
);
2679 if (opendata
->o_res
.rflags
& NFS4_OPEN_RESULT_MAY_NOTIFY_LOCK
)
2680 set_bit(NFS_STATE_MAY_NOTIFY_LOCK
, &state
->flags
);
2682 dentry
= opendata
->dentry
;
2683 if (d_really_is_negative(dentry
)) {
2684 struct dentry
*alias
;
2686 alias
= d_exact_alias(dentry
, state
->inode
);
2688 alias
= d_splice_alias(igrab(state
->inode
), dentry
);
2689 /* d_splice_alias() can't fail here - it's a non-directory */
2692 ctx
->dentry
= dentry
= alias
;
2694 nfs_set_verifier(dentry
,
2695 nfs_save_change_attribute(d_inode(opendata
->dir
)));
2698 ret
= nfs4_opendata_access(sp
->so_cred
, opendata
, state
, fmode
, flags
);
2703 if (d_inode(dentry
) == state
->inode
) {
2704 nfs_inode_attach_open_context(ctx
);
2705 if (read_seqcount_retry(&sp
->so_reclaim_seqcount
, seq
))
2706 nfs4_schedule_stateid_recovery(server
, state
);
2713 * Returns a referenced nfs4_state
2715 static int _nfs4_do_open(struct inode
*dir
,
2716 struct nfs_open_context
*ctx
,
2718 struct iattr
*sattr
,
2719 struct nfs4_label
*label
,
2722 struct nfs4_state_owner
*sp
;
2723 struct nfs4_state
*state
= NULL
;
2724 struct nfs_server
*server
= NFS_SERVER(dir
);
2725 struct nfs4_opendata
*opendata
;
2726 struct dentry
*dentry
= ctx
->dentry
;
2727 struct rpc_cred
*cred
= ctx
->cred
;
2728 struct nfs4_threshold
**ctx_th
= &ctx
->mdsthreshold
;
2729 fmode_t fmode
= ctx
->mode
& (FMODE_READ
|FMODE_WRITE
|FMODE_EXEC
);
2730 enum open_claim_type4 claim
= NFS4_OPEN_CLAIM_NULL
;
2731 struct nfs4_label
*olabel
= NULL
;
2734 /* Protect against reboot recovery conflicts */
2736 sp
= nfs4_get_state_owner(server
, cred
, GFP_KERNEL
);
2738 dprintk("nfs4_do_open: nfs4_get_state_owner failed!\n");
2741 status
= nfs4_recover_expired_lease(server
);
2743 goto err_put_state_owner
;
2744 if (d_really_is_positive(dentry
))
2745 nfs4_return_incompatible_delegation(d_inode(dentry
), fmode
);
2747 if (d_really_is_positive(dentry
))
2748 claim
= NFS4_OPEN_CLAIM_FH
;
2749 opendata
= nfs4_opendata_alloc(dentry
, sp
, fmode
, flags
, sattr
,
2750 label
, claim
, GFP_KERNEL
);
2751 if (opendata
== NULL
)
2752 goto err_put_state_owner
;
2755 olabel
= nfs4_label_alloc(server
, GFP_KERNEL
);
2756 if (IS_ERR(olabel
)) {
2757 status
= PTR_ERR(olabel
);
2758 goto err_opendata_put
;
2762 if (server
->attr_bitmask
[2] & FATTR4_WORD2_MDSTHRESHOLD
) {
2763 if (!opendata
->f_attr
.mdsthreshold
) {
2764 opendata
->f_attr
.mdsthreshold
= pnfs_mdsthreshold_alloc();
2765 if (!opendata
->f_attr
.mdsthreshold
)
2766 goto err_free_label
;
2768 opendata
->o_arg
.open_bitmap
= &nfs4_pnfs_open_bitmap
[0];
2770 if (d_really_is_positive(dentry
))
2771 opendata
->state
= nfs4_get_open_state(d_inode(dentry
), sp
);
2773 status
= _nfs4_open_and_get_state(opendata
, fmode
, flags
, ctx
);
2775 goto err_free_label
;
2778 if ((opendata
->o_arg
.open_flags
& (O_CREAT
|O_EXCL
)) == (O_CREAT
|O_EXCL
) &&
2779 (opendata
->o_arg
.createmode
!= NFS4_CREATE_GUARDED
)) {
2780 nfs4_exclusive_attrset(opendata
, sattr
, &label
);
2782 * send create attributes which was not set by open
2783 * with an extra setattr.
2785 if (sattr
->ia_valid
& NFS4_VALID_ATTRS
) {
2786 nfs_fattr_init(opendata
->o_res
.f_attr
);
2787 status
= nfs4_do_setattr(state
->inode
, cred
,
2788 opendata
->o_res
.f_attr
, sattr
,
2789 state
, label
, olabel
);
2791 nfs_setattr_update_inode(state
->inode
, sattr
,
2792 opendata
->o_res
.f_attr
);
2793 nfs_setsecurity(state
->inode
, opendata
->o_res
.f_attr
, olabel
);
2797 if (opened
&& opendata
->file_created
)
2798 *opened
|= FILE_CREATED
;
2800 if (pnfs_use_threshold(ctx_th
, opendata
->f_attr
.mdsthreshold
, server
)) {
2801 *ctx_th
= opendata
->f_attr
.mdsthreshold
;
2802 opendata
->f_attr
.mdsthreshold
= NULL
;
2805 nfs4_label_free(olabel
);
2807 nfs4_opendata_put(opendata
);
2808 nfs4_put_state_owner(sp
);
2811 nfs4_label_free(olabel
);
2813 nfs4_opendata_put(opendata
);
2814 err_put_state_owner
:
2815 nfs4_put_state_owner(sp
);
2821 static struct nfs4_state
*nfs4_do_open(struct inode
*dir
,
2822 struct nfs_open_context
*ctx
,
2824 struct iattr
*sattr
,
2825 struct nfs4_label
*label
,
2828 struct nfs_server
*server
= NFS_SERVER(dir
);
2829 struct nfs4_exception exception
= { };
2830 struct nfs4_state
*res
;
2834 status
= _nfs4_do_open(dir
, ctx
, flags
, sattr
, label
, opened
);
2836 trace_nfs4_open_file(ctx
, flags
, status
);
2839 /* NOTE: BAD_SEQID means the server and client disagree about the
2840 * book-keeping w.r.t. state-changing operations
2841 * (OPEN/CLOSE/LOCK/LOCKU...)
2842 * It is actually a sign of a bug on the client or on the server.
2844 * If we receive a BAD_SEQID error in the particular case of
2845 * doing an OPEN, we assume that nfs_increment_open_seqid() will
2846 * have unhashed the old state_owner for us, and that we can
2847 * therefore safely retry using a new one. We should still warn
2848 * the user though...
2850 if (status
== -NFS4ERR_BAD_SEQID
) {
2851 pr_warn_ratelimited("NFS: v4 server %s "
2852 " returned a bad sequence-id error!\n",
2853 NFS_SERVER(dir
)->nfs_client
->cl_hostname
);
2854 exception
.retry
= 1;
2858 * BAD_STATEID on OPEN means that the server cancelled our
2859 * state before it received the OPEN_CONFIRM.
2860 * Recover by retrying the request as per the discussion
2861 * on Page 181 of RFC3530.
2863 if (status
== -NFS4ERR_BAD_STATEID
) {
2864 exception
.retry
= 1;
2867 if (status
== -EAGAIN
) {
2868 /* We must have found a delegation */
2869 exception
.retry
= 1;
2872 if (nfs4_clear_cap_atomic_open_v1(server
, status
, &exception
))
2874 res
= ERR_PTR(nfs4_handle_exception(server
,
2875 status
, &exception
));
2876 } while (exception
.retry
);
2880 static int _nfs4_do_setattr(struct inode
*inode
,
2881 struct nfs_setattrargs
*arg
,
2882 struct nfs_setattrres
*res
,
2883 struct rpc_cred
*cred
,
2884 struct nfs4_state
*state
)
2886 struct nfs_server
*server
= NFS_SERVER(inode
);
2887 struct rpc_message msg
= {
2888 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETATTR
],
2893 struct rpc_cred
*delegation_cred
= NULL
;
2894 unsigned long timestamp
= jiffies
;
2899 nfs_fattr_init(res
->fattr
);
2901 /* Servers should only apply open mode checks for file size changes */
2902 truncate
= (arg
->iap
->ia_valid
& ATTR_SIZE
) ? true : false;
2903 fmode
= truncate
? FMODE_WRITE
: FMODE_READ
;
2905 if (nfs4_copy_delegation_stateid(inode
, fmode
, &arg
->stateid
, &delegation_cred
)) {
2906 /* Use that stateid */
2907 } else if (truncate
&& state
!= NULL
) {
2908 struct nfs_lockowner lockowner
= {
2909 .l_owner
= current
->files
,
2910 .l_pid
= current
->tgid
,
2912 if (!nfs4_valid_open_stateid(state
))
2914 if (nfs4_select_rw_stateid(state
, FMODE_WRITE
, &lockowner
,
2915 &arg
->stateid
, &delegation_cred
) == -EIO
)
2918 nfs4_stateid_copy(&arg
->stateid
, &zero_stateid
);
2919 if (delegation_cred
)
2920 msg
.rpc_cred
= delegation_cred
;
2922 status
= nfs4_call_sync(server
->client
, server
, &msg
, &arg
->seq_args
, &res
->seq_res
, 1);
2924 put_rpccred(delegation_cred
);
2925 if (status
== 0 && state
!= NULL
)
2926 renew_lease(server
, timestamp
);
2927 trace_nfs4_setattr(inode
, &arg
->stateid
, status
);
2931 static int nfs4_do_setattr(struct inode
*inode
, struct rpc_cred
*cred
,
2932 struct nfs_fattr
*fattr
, struct iattr
*sattr
,
2933 struct nfs4_state
*state
, struct nfs4_label
*ilabel
,
2934 struct nfs4_label
*olabel
)
2936 struct nfs_server
*server
= NFS_SERVER(inode
);
2937 struct nfs_setattrargs arg
= {
2938 .fh
= NFS_FH(inode
),
2941 .bitmask
= server
->attr_bitmask
,
2944 struct nfs_setattrres res
= {
2949 struct nfs4_exception exception
= {
2952 .stateid
= &arg
.stateid
,
2956 arg
.bitmask
= nfs4_bitmask(server
, ilabel
);
2958 arg
.bitmask
= nfs4_bitmask(server
, olabel
);
2961 err
= _nfs4_do_setattr(inode
, &arg
, &res
, cred
, state
);
2963 case -NFS4ERR_OPENMODE
:
2964 if (!(sattr
->ia_valid
& ATTR_SIZE
)) {
2965 pr_warn_once("NFSv4: server %s is incorrectly "
2966 "applying open mode checks to "
2967 "a SETATTR that is not "
2968 "changing file size.\n",
2969 server
->nfs_client
->cl_hostname
);
2971 if (state
&& !(state
->state
& FMODE_WRITE
)) {
2973 if (sattr
->ia_valid
& ATTR_OPEN
)
2978 err
= nfs4_handle_exception(server
, err
, &exception
);
2979 } while (exception
.retry
);
2985 nfs4_wait_on_layoutreturn(struct inode
*inode
, struct rpc_task
*task
)
2987 if (inode
== NULL
|| !nfs_have_layout(inode
))
2990 return pnfs_wait_on_layoutreturn(inode
, task
);
2993 struct nfs4_closedata
{
2994 struct inode
*inode
;
2995 struct nfs4_state
*state
;
2996 struct nfs_closeargs arg
;
2997 struct nfs_closeres res
;
2998 struct nfs_fattr fattr
;
2999 unsigned long timestamp
;
3004 static void nfs4_free_closedata(void *data
)
3006 struct nfs4_closedata
*calldata
= data
;
3007 struct nfs4_state_owner
*sp
= calldata
->state
->owner
;
3008 struct super_block
*sb
= calldata
->state
->inode
->i_sb
;
3011 pnfs_roc_release(calldata
->state
->inode
);
3012 nfs4_put_open_state(calldata
->state
);
3013 nfs_free_seqid(calldata
->arg
.seqid
);
3014 nfs4_put_state_owner(sp
);
3015 nfs_sb_deactive(sb
);
3019 static void nfs4_close_done(struct rpc_task
*task
, void *data
)
3021 struct nfs4_closedata
*calldata
= data
;
3022 struct nfs4_state
*state
= calldata
->state
;
3023 struct nfs_server
*server
= NFS_SERVER(calldata
->inode
);
3024 nfs4_stateid
*res_stateid
= NULL
;
3026 dprintk("%s: begin!\n", __func__
);
3027 if (!nfs4_sequence_done(task
, &calldata
->res
.seq_res
))
3029 trace_nfs4_close(state
, &calldata
->arg
, &calldata
->res
, task
->tk_status
);
3030 /* hmm. we are done with the inode, and in the process of freeing
3031 * the state_owner. we keep this around to process errors
3033 switch (task
->tk_status
) {
3035 res_stateid
= &calldata
->res
.stateid
;
3037 pnfs_roc_set_barrier(state
->inode
,
3038 calldata
->roc_barrier
);
3039 renew_lease(server
, calldata
->timestamp
);
3041 case -NFS4ERR_ADMIN_REVOKED
:
3042 case -NFS4ERR_STALE_STATEID
:
3043 case -NFS4ERR_EXPIRED
:
3044 nfs4_free_revoked_stateid(server
,
3045 &calldata
->arg
.stateid
,
3046 task
->tk_msg
.rpc_cred
);
3047 case -NFS4ERR_OLD_STATEID
:
3048 case -NFS4ERR_BAD_STATEID
:
3049 if (!nfs4_stateid_match(&calldata
->arg
.stateid
,
3050 &state
->open_stateid
)) {
3051 rpc_restart_call_prepare(task
);
3054 if (calldata
->arg
.fmode
== 0)
3057 if (nfs4_async_handle_error(task
, server
, state
, NULL
) == -EAGAIN
) {
3058 rpc_restart_call_prepare(task
);
3062 nfs_clear_open_stateid(state
, &calldata
->arg
.stateid
,
3063 res_stateid
, calldata
->arg
.fmode
);
3065 nfs_release_seqid(calldata
->arg
.seqid
);
3066 nfs_refresh_inode(calldata
->inode
, calldata
->res
.fattr
);
3067 dprintk("%s: done, ret = %d!\n", __func__
, task
->tk_status
);
3070 static void nfs4_close_prepare(struct rpc_task
*task
, void *data
)
3072 struct nfs4_closedata
*calldata
= data
;
3073 struct nfs4_state
*state
= calldata
->state
;
3074 struct inode
*inode
= calldata
->inode
;
3075 bool is_rdonly
, is_wronly
, is_rdwr
;
3078 dprintk("%s: begin!\n", __func__
);
3079 if (nfs_wait_on_sequence(calldata
->arg
.seqid
, task
) != 0)
3082 task
->tk_msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_OPEN_DOWNGRADE
];
3083 spin_lock(&state
->owner
->so_lock
);
3084 is_rdwr
= test_bit(NFS_O_RDWR_STATE
, &state
->flags
);
3085 is_rdonly
= test_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
3086 is_wronly
= test_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
3087 nfs4_stateid_copy(&calldata
->arg
.stateid
, &state
->open_stateid
);
3088 /* Calculate the change in open mode */
3089 calldata
->arg
.fmode
= 0;
3090 if (state
->n_rdwr
== 0) {
3091 if (state
->n_rdonly
== 0)
3092 call_close
|= is_rdonly
;
3094 calldata
->arg
.fmode
|= FMODE_READ
;
3095 if (state
->n_wronly
== 0)
3096 call_close
|= is_wronly
;
3098 calldata
->arg
.fmode
|= FMODE_WRITE
;
3099 if (calldata
->arg
.fmode
!= (FMODE_READ
|FMODE_WRITE
))
3100 call_close
|= is_rdwr
;
3102 calldata
->arg
.fmode
|= FMODE_READ
|FMODE_WRITE
;
3104 if (!nfs4_valid_open_stateid(state
))
3106 spin_unlock(&state
->owner
->so_lock
);
3109 /* Note: exit _without_ calling nfs4_close_done */
3113 if (nfs4_wait_on_layoutreturn(inode
, task
)) {
3114 nfs_release_seqid(calldata
->arg
.seqid
);
3118 if (calldata
->arg
.fmode
== 0)
3119 task
->tk_msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_CLOSE
];
3121 pnfs_roc_get_barrier(inode
, &calldata
->roc_barrier
);
3123 calldata
->arg
.share_access
=
3124 nfs4_map_atomic_open_share(NFS_SERVER(inode
),
3125 calldata
->arg
.fmode
, 0);
3127 nfs_fattr_init(calldata
->res
.fattr
);
3128 calldata
->timestamp
= jiffies
;
3129 if (nfs4_setup_sequence(NFS_SERVER(inode
),
3130 &calldata
->arg
.seq_args
,
3131 &calldata
->res
.seq_res
,
3133 nfs_release_seqid(calldata
->arg
.seqid
);
3134 dprintk("%s: done!\n", __func__
);
3137 task
->tk_action
= NULL
;
3139 nfs4_sequence_done(task
, &calldata
->res
.seq_res
);
3142 static const struct rpc_call_ops nfs4_close_ops
= {
3143 .rpc_call_prepare
= nfs4_close_prepare
,
3144 .rpc_call_done
= nfs4_close_done
,
3145 .rpc_release
= nfs4_free_closedata
,
3148 static bool nfs4_roc(struct inode
*inode
)
3150 if (!nfs_have_layout(inode
))
3152 return pnfs_roc(inode
);
3156 * It is possible for data to be read/written from a mem-mapped file
3157 * after the sys_close call (which hits the vfs layer as a flush).
3158 * This means that we can't safely call nfsv4 close on a file until
3159 * the inode is cleared. This in turn means that we are not good
3160 * NFSv4 citizens - we do not indicate to the server to update the file's
3161 * share state even when we are done with one of the three share
3162 * stateid's in the inode.
3164 * NOTE: Caller must be holding the sp->so_owner semaphore!
3166 int nfs4_do_close(struct nfs4_state
*state
, gfp_t gfp_mask
, int wait
)
3168 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
3169 struct nfs_seqid
*(*alloc_seqid
)(struct nfs_seqid_counter
*, gfp_t
);
3170 struct nfs4_closedata
*calldata
;
3171 struct nfs4_state_owner
*sp
= state
->owner
;
3172 struct rpc_task
*task
;
3173 struct rpc_message msg
= {
3174 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_CLOSE
],
3175 .rpc_cred
= state
->owner
->so_cred
,
3177 struct rpc_task_setup task_setup_data
= {
3178 .rpc_client
= server
->client
,
3179 .rpc_message
= &msg
,
3180 .callback_ops
= &nfs4_close_ops
,
3181 .workqueue
= nfsiod_workqueue
,
3182 .flags
= RPC_TASK_ASYNC
,
3184 int status
= -ENOMEM
;
3186 nfs4_state_protect(server
->nfs_client
, NFS_SP4_MACH_CRED_CLEANUP
,
3187 &task_setup_data
.rpc_client
, &msg
);
3189 calldata
= kzalloc(sizeof(*calldata
), gfp_mask
);
3190 if (calldata
== NULL
)
3192 nfs4_init_sequence(&calldata
->arg
.seq_args
, &calldata
->res
.seq_res
, 1);
3193 calldata
->inode
= state
->inode
;
3194 calldata
->state
= state
;
3195 calldata
->arg
.fh
= NFS_FH(state
->inode
);
3196 /* Serialization for the sequence id */
3197 alloc_seqid
= server
->nfs_client
->cl_mvops
->alloc_seqid
;
3198 calldata
->arg
.seqid
= alloc_seqid(&state
->owner
->so_seqid
, gfp_mask
);
3199 if (IS_ERR(calldata
->arg
.seqid
))
3200 goto out_free_calldata
;
3201 calldata
->arg
.fmode
= 0;
3202 calldata
->arg
.bitmask
= server
->cache_consistency_bitmask
;
3203 calldata
->res
.fattr
= &calldata
->fattr
;
3204 calldata
->res
.seqid
= calldata
->arg
.seqid
;
3205 calldata
->res
.server
= server
;
3206 calldata
->roc
= nfs4_roc(state
->inode
);
3207 nfs_sb_active(calldata
->inode
->i_sb
);
3209 msg
.rpc_argp
= &calldata
->arg
;
3210 msg
.rpc_resp
= &calldata
->res
;
3211 task_setup_data
.callback_data
= calldata
;
3212 task
= rpc_run_task(&task_setup_data
);
3214 return PTR_ERR(task
);
3217 status
= rpc_wait_for_completion_task(task
);
3223 nfs4_put_open_state(state
);
3224 nfs4_put_state_owner(sp
);
3228 static struct inode
*
3229 nfs4_atomic_open(struct inode
*dir
, struct nfs_open_context
*ctx
,
3230 int open_flags
, struct iattr
*attr
, int *opened
)
3232 struct nfs4_state
*state
;
3233 struct nfs4_label l
= {0, 0, 0, NULL
}, *label
= NULL
;
3235 label
= nfs4_label_init_security(dir
, ctx
->dentry
, attr
, &l
);
3237 /* Protect against concurrent sillydeletes */
3238 state
= nfs4_do_open(dir
, ctx
, open_flags
, attr
, label
, opened
);
3240 nfs4_label_release_security(label
);
3243 return ERR_CAST(state
);
3244 return state
->inode
;
3247 static void nfs4_close_context(struct nfs_open_context
*ctx
, int is_sync
)
3249 if (ctx
->state
== NULL
)
3252 nfs4_close_sync(ctx
->state
, ctx
->mode
);
3254 nfs4_close_state(ctx
->state
, ctx
->mode
);
3257 #define FATTR4_WORD1_NFS40_MASK (2*FATTR4_WORD1_MOUNTED_ON_FILEID - 1UL)
3258 #define FATTR4_WORD2_NFS41_MASK (2*FATTR4_WORD2_SUPPATTR_EXCLCREAT - 1UL)
3259 #define FATTR4_WORD2_NFS42_MASK (2*FATTR4_WORD2_SECURITY_LABEL - 1UL)
3261 static int _nfs4_server_capabilities(struct nfs_server
*server
, struct nfs_fh
*fhandle
)
3263 u32 bitmask
[3] = {}, minorversion
= server
->nfs_client
->cl_minorversion
;
3264 struct nfs4_server_caps_arg args
= {
3268 struct nfs4_server_caps_res res
= {};
3269 struct rpc_message msg
= {
3270 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SERVER_CAPS
],
3276 bitmask
[0] = FATTR4_WORD0_SUPPORTED_ATTRS
|
3277 FATTR4_WORD0_FH_EXPIRE_TYPE
|
3278 FATTR4_WORD0_LINK_SUPPORT
|
3279 FATTR4_WORD0_SYMLINK_SUPPORT
|
3280 FATTR4_WORD0_ACLSUPPORT
;
3282 bitmask
[2] = FATTR4_WORD2_SUPPATTR_EXCLCREAT
;
3284 status
= nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
3286 /* Sanity check the server answers */
3287 switch (minorversion
) {
3289 res
.attr_bitmask
[1] &= FATTR4_WORD1_NFS40_MASK
;
3290 res
.attr_bitmask
[2] = 0;
3293 res
.attr_bitmask
[2] &= FATTR4_WORD2_NFS41_MASK
;
3296 res
.attr_bitmask
[2] &= FATTR4_WORD2_NFS42_MASK
;
3298 memcpy(server
->attr_bitmask
, res
.attr_bitmask
, sizeof(server
->attr_bitmask
));
3299 server
->caps
&= ~(NFS_CAP_ACLS
|NFS_CAP_HARDLINKS
|
3300 NFS_CAP_SYMLINKS
|NFS_CAP_FILEID
|
3301 NFS_CAP_MODE
|NFS_CAP_NLINK
|NFS_CAP_OWNER
|
3302 NFS_CAP_OWNER_GROUP
|NFS_CAP_ATIME
|
3303 NFS_CAP_CTIME
|NFS_CAP_MTIME
|
3304 NFS_CAP_SECURITY_LABEL
);
3305 if (res
.attr_bitmask
[0] & FATTR4_WORD0_ACL
&&
3306 res
.acl_bitmask
& ACL4_SUPPORT_ALLOW_ACL
)
3307 server
->caps
|= NFS_CAP_ACLS
;
3308 if (res
.has_links
!= 0)
3309 server
->caps
|= NFS_CAP_HARDLINKS
;
3310 if (res
.has_symlinks
!= 0)
3311 server
->caps
|= NFS_CAP_SYMLINKS
;
3312 if (res
.attr_bitmask
[0] & FATTR4_WORD0_FILEID
)
3313 server
->caps
|= NFS_CAP_FILEID
;
3314 if (res
.attr_bitmask
[1] & FATTR4_WORD1_MODE
)
3315 server
->caps
|= NFS_CAP_MODE
;
3316 if (res
.attr_bitmask
[1] & FATTR4_WORD1_NUMLINKS
)
3317 server
->caps
|= NFS_CAP_NLINK
;
3318 if (res
.attr_bitmask
[1] & FATTR4_WORD1_OWNER
)
3319 server
->caps
|= NFS_CAP_OWNER
;
3320 if (res
.attr_bitmask
[1] & FATTR4_WORD1_OWNER_GROUP
)
3321 server
->caps
|= NFS_CAP_OWNER_GROUP
;
3322 if (res
.attr_bitmask
[1] & FATTR4_WORD1_TIME_ACCESS
)
3323 server
->caps
|= NFS_CAP_ATIME
;
3324 if (res
.attr_bitmask
[1] & FATTR4_WORD1_TIME_METADATA
)
3325 server
->caps
|= NFS_CAP_CTIME
;
3326 if (res
.attr_bitmask
[1] & FATTR4_WORD1_TIME_MODIFY
)
3327 server
->caps
|= NFS_CAP_MTIME
;
3328 #ifdef CONFIG_NFS_V4_SECURITY_LABEL
3329 if (res
.attr_bitmask
[2] & FATTR4_WORD2_SECURITY_LABEL
)
3330 server
->caps
|= NFS_CAP_SECURITY_LABEL
;
3332 memcpy(server
->attr_bitmask_nl
, res
.attr_bitmask
,
3333 sizeof(server
->attr_bitmask
));
3334 server
->attr_bitmask_nl
[2] &= ~FATTR4_WORD2_SECURITY_LABEL
;
3336 memcpy(server
->cache_consistency_bitmask
, res
.attr_bitmask
, sizeof(server
->cache_consistency_bitmask
));
3337 server
->cache_consistency_bitmask
[0] &= FATTR4_WORD0_CHANGE
|FATTR4_WORD0_SIZE
;
3338 server
->cache_consistency_bitmask
[1] &= FATTR4_WORD1_TIME_METADATA
|FATTR4_WORD1_TIME_MODIFY
;
3339 server
->cache_consistency_bitmask
[2] = 0;
3340 memcpy(server
->exclcreat_bitmask
, res
.exclcreat_bitmask
,
3341 sizeof(server
->exclcreat_bitmask
));
3342 server
->acl_bitmask
= res
.acl_bitmask
;
3343 server
->fh_expire_type
= res
.fh_expire_type
;
3349 int nfs4_server_capabilities(struct nfs_server
*server
, struct nfs_fh
*fhandle
)
3351 struct nfs4_exception exception
= { };
3354 err
= nfs4_handle_exception(server
,
3355 _nfs4_server_capabilities(server
, fhandle
),
3357 } while (exception
.retry
);
3361 static int _nfs4_lookup_root(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
3362 struct nfs_fsinfo
*info
)
3365 struct nfs4_lookup_root_arg args
= {
3368 struct nfs4_lookup_res res
= {
3370 .fattr
= info
->fattr
,
3373 struct rpc_message msg
= {
3374 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOOKUP_ROOT
],
3379 bitmask
[0] = nfs4_fattr_bitmap
[0];
3380 bitmask
[1] = nfs4_fattr_bitmap
[1];
3382 * Process the label in the upcoming getfattr
3384 bitmask
[2] = nfs4_fattr_bitmap
[2] & ~FATTR4_WORD2_SECURITY_LABEL
;
3386 nfs_fattr_init(info
->fattr
);
3387 return nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
3390 static int nfs4_lookup_root(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
3391 struct nfs_fsinfo
*info
)
3393 struct nfs4_exception exception
= { };
3396 err
= _nfs4_lookup_root(server
, fhandle
, info
);
3397 trace_nfs4_lookup_root(server
, fhandle
, info
->fattr
, err
);
3400 case -NFS4ERR_WRONGSEC
:
3403 err
= nfs4_handle_exception(server
, err
, &exception
);
3405 } while (exception
.retry
);
3410 static int nfs4_lookup_root_sec(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
3411 struct nfs_fsinfo
*info
, rpc_authflavor_t flavor
)
3413 struct rpc_auth_create_args auth_args
= {
3414 .pseudoflavor
= flavor
,
3416 struct rpc_auth
*auth
;
3419 auth
= rpcauth_create(&auth_args
, server
->client
);
3424 ret
= nfs4_lookup_root(server
, fhandle
, info
);
3430 * Retry pseudoroot lookup with various security flavors. We do this when:
3432 * NFSv4.0: the PUTROOTFH operation returns NFS4ERR_WRONGSEC
3433 * NFSv4.1: the server does not support the SECINFO_NO_NAME operation
3435 * Returns zero on success, or a negative NFS4ERR value, or a
3436 * negative errno value.
3438 static int nfs4_find_root_sec(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
3439 struct nfs_fsinfo
*info
)
3441 /* Per 3530bis 15.33.5 */
3442 static const rpc_authflavor_t flav_array
[] = {
3446 RPC_AUTH_UNIX
, /* courtesy */
3449 int status
= -EPERM
;
3452 if (server
->auth_info
.flavor_len
> 0) {
3453 /* try each flavor specified by user */
3454 for (i
= 0; i
< server
->auth_info
.flavor_len
; i
++) {
3455 status
= nfs4_lookup_root_sec(server
, fhandle
, info
,
3456 server
->auth_info
.flavors
[i
]);
3457 if (status
== -NFS4ERR_WRONGSEC
|| status
== -EACCES
)
3462 /* no flavors specified by user, try default list */
3463 for (i
= 0; i
< ARRAY_SIZE(flav_array
); i
++) {
3464 status
= nfs4_lookup_root_sec(server
, fhandle
, info
,
3466 if (status
== -NFS4ERR_WRONGSEC
|| status
== -EACCES
)
3473 * -EACCESS could mean that the user doesn't have correct permissions
3474 * to access the mount. It could also mean that we tried to mount
3475 * with a gss auth flavor, but rpc.gssd isn't running. Either way,
3476 * existing mount programs don't handle -EACCES very well so it should
3477 * be mapped to -EPERM instead.
3479 if (status
== -EACCES
)
3485 * nfs4_proc_get_rootfh - get file handle for server's pseudoroot
3486 * @server: initialized nfs_server handle
3487 * @fhandle: we fill in the pseudo-fs root file handle
3488 * @info: we fill in an FSINFO struct
3489 * @auth_probe: probe the auth flavours
3491 * Returns zero on success, or a negative errno.
3493 int nfs4_proc_get_rootfh(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
3494 struct nfs_fsinfo
*info
,
3500 status
= nfs4_lookup_root(server
, fhandle
, info
);
3502 if (auth_probe
|| status
== NFS4ERR_WRONGSEC
)
3503 status
= server
->nfs_client
->cl_mvops
->find_root_sec(server
,
3507 status
= nfs4_server_capabilities(server
, fhandle
);
3509 status
= nfs4_do_fsinfo(server
, fhandle
, info
);
3511 return nfs4_map_errors(status
);
3514 static int nfs4_proc_get_root(struct nfs_server
*server
, struct nfs_fh
*mntfh
,
3515 struct nfs_fsinfo
*info
)
3518 struct nfs_fattr
*fattr
= info
->fattr
;
3519 struct nfs4_label
*label
= NULL
;
3521 error
= nfs4_server_capabilities(server
, mntfh
);
3523 dprintk("nfs4_get_root: getcaps error = %d\n", -error
);
3527 label
= nfs4_label_alloc(server
, GFP_KERNEL
);
3529 return PTR_ERR(label
);
3531 error
= nfs4_proc_getattr(server
, mntfh
, fattr
, label
);
3533 dprintk("nfs4_get_root: getattr error = %d\n", -error
);
3534 goto err_free_label
;
3537 if (fattr
->valid
& NFS_ATTR_FATTR_FSID
&&
3538 !nfs_fsid_equal(&server
->fsid
, &fattr
->fsid
))
3539 memcpy(&server
->fsid
, &fattr
->fsid
, sizeof(server
->fsid
));
3542 nfs4_label_free(label
);
3548 * Get locations and (maybe) other attributes of a referral.
3549 * Note that we'll actually follow the referral later when
3550 * we detect fsid mismatch in inode revalidation
3552 static int nfs4_get_referral(struct rpc_clnt
*client
, struct inode
*dir
,
3553 const struct qstr
*name
, struct nfs_fattr
*fattr
,
3554 struct nfs_fh
*fhandle
)
3556 int status
= -ENOMEM
;
3557 struct page
*page
= NULL
;
3558 struct nfs4_fs_locations
*locations
= NULL
;
3560 page
= alloc_page(GFP_KERNEL
);
3563 locations
= kmalloc(sizeof(struct nfs4_fs_locations
), GFP_KERNEL
);
3564 if (locations
== NULL
)
3567 status
= nfs4_proc_fs_locations(client
, dir
, name
, locations
, page
);
3572 * If the fsid didn't change, this is a migration event, not a
3573 * referral. Cause us to drop into the exception handler, which
3574 * will kick off migration recovery.
3576 if (nfs_fsid_equal(&NFS_SERVER(dir
)->fsid
, &locations
->fattr
.fsid
)) {
3577 dprintk("%s: server did not return a different fsid for"
3578 " a referral at %s\n", __func__
, name
->name
);
3579 status
= -NFS4ERR_MOVED
;
3582 /* Fixup attributes for the nfs_lookup() call to nfs_fhget() */
3583 nfs_fixup_referral_attributes(&locations
->fattr
);
3585 /* replace the lookup nfs_fattr with the locations nfs_fattr */
3586 memcpy(fattr
, &locations
->fattr
, sizeof(struct nfs_fattr
));
3587 memset(fhandle
, 0, sizeof(struct nfs_fh
));
3595 static int _nfs4_proc_getattr(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
3596 struct nfs_fattr
*fattr
, struct nfs4_label
*label
)
3598 struct nfs4_getattr_arg args
= {
3600 .bitmask
= server
->attr_bitmask
,
3602 struct nfs4_getattr_res res
= {
3607 struct rpc_message msg
= {
3608 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GETATTR
],
3613 args
.bitmask
= nfs4_bitmask(server
, label
);
3615 nfs_fattr_init(fattr
);
3616 return nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
3619 static int nfs4_proc_getattr(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
3620 struct nfs_fattr
*fattr
, struct nfs4_label
*label
)
3622 struct nfs4_exception exception
= { };
3625 err
= _nfs4_proc_getattr(server
, fhandle
, fattr
, label
);
3626 trace_nfs4_getattr(server
, fhandle
, fattr
, err
);
3627 err
= nfs4_handle_exception(server
, err
,
3629 } while (exception
.retry
);
3634 * The file is not closed if it is opened due to the a request to change
3635 * the size of the file. The open call will not be needed once the
3636 * VFS layer lookup-intents are implemented.
3638 * Close is called when the inode is destroyed.
3639 * If we haven't opened the file for O_WRONLY, we
3640 * need to in the size_change case to obtain a stateid.
3643 * Because OPEN is always done by name in nfsv4, it is
3644 * possible that we opened a different file by the same
3645 * name. We can recognize this race condition, but we
3646 * can't do anything about it besides returning an error.
3648 * This will be fixed with VFS changes (lookup-intent).
3651 nfs4_proc_setattr(struct dentry
*dentry
, struct nfs_fattr
*fattr
,
3652 struct iattr
*sattr
)
3654 struct inode
*inode
= d_inode(dentry
);
3655 struct rpc_cred
*cred
= NULL
;
3656 struct nfs4_state
*state
= NULL
;
3657 struct nfs4_label
*label
= NULL
;
3660 if (pnfs_ld_layoutret_on_setattr(inode
) &&
3661 sattr
->ia_valid
& ATTR_SIZE
&&
3662 sattr
->ia_size
< i_size_read(inode
))
3663 pnfs_commit_and_return_layout(inode
);
3665 nfs_fattr_init(fattr
);
3667 /* Deal with open(O_TRUNC) */
3668 if (sattr
->ia_valid
& ATTR_OPEN
)
3669 sattr
->ia_valid
&= ~(ATTR_MTIME
|ATTR_CTIME
);
3671 /* Optimization: if the end result is no change, don't RPC */
3672 if ((sattr
->ia_valid
& ~(ATTR_FILE
|ATTR_OPEN
)) == 0)
3675 /* Search for an existing open(O_WRITE) file */
3676 if (sattr
->ia_valid
& ATTR_FILE
) {
3677 struct nfs_open_context
*ctx
;
3679 ctx
= nfs_file_open_context(sattr
->ia_file
);
3686 label
= nfs4_label_alloc(NFS_SERVER(inode
), GFP_KERNEL
);
3688 return PTR_ERR(label
);
3690 status
= nfs4_do_setattr(inode
, cred
, fattr
, sattr
, state
, NULL
, label
);
3692 nfs_setattr_update_inode(inode
, sattr
, fattr
);
3693 nfs_setsecurity(inode
, fattr
, label
);
3695 nfs4_label_free(label
);
3699 static int _nfs4_proc_lookup(struct rpc_clnt
*clnt
, struct inode
*dir
,
3700 const struct qstr
*name
, struct nfs_fh
*fhandle
,
3701 struct nfs_fattr
*fattr
, struct nfs4_label
*label
)
3703 struct nfs_server
*server
= NFS_SERVER(dir
);
3705 struct nfs4_lookup_arg args
= {
3706 .bitmask
= server
->attr_bitmask
,
3707 .dir_fh
= NFS_FH(dir
),
3710 struct nfs4_lookup_res res
= {
3716 struct rpc_message msg
= {
3717 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOOKUP
],
3722 args
.bitmask
= nfs4_bitmask(server
, label
);
3724 nfs_fattr_init(fattr
);
3726 dprintk("NFS call lookup %s\n", name
->name
);
3727 status
= nfs4_call_sync(clnt
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
3728 dprintk("NFS reply lookup: %d\n", status
);
3732 static void nfs_fixup_secinfo_attributes(struct nfs_fattr
*fattr
)
3734 fattr
->valid
|= NFS_ATTR_FATTR_TYPE
| NFS_ATTR_FATTR_MODE
|
3735 NFS_ATTR_FATTR_NLINK
| NFS_ATTR_FATTR_MOUNTPOINT
;
3736 fattr
->mode
= S_IFDIR
| S_IRUGO
| S_IXUGO
;
3740 static int nfs4_proc_lookup_common(struct rpc_clnt
**clnt
, struct inode
*dir
,
3741 const struct qstr
*name
, struct nfs_fh
*fhandle
,
3742 struct nfs_fattr
*fattr
, struct nfs4_label
*label
)
3744 struct nfs4_exception exception
= { };
3745 struct rpc_clnt
*client
= *clnt
;
3748 err
= _nfs4_proc_lookup(client
, dir
, name
, fhandle
, fattr
, label
);
3749 trace_nfs4_lookup(dir
, name
, err
);
3751 case -NFS4ERR_BADNAME
:
3754 case -NFS4ERR_MOVED
:
3755 err
= nfs4_get_referral(client
, dir
, name
, fattr
, fhandle
);
3756 if (err
== -NFS4ERR_MOVED
)
3757 err
= nfs4_handle_exception(NFS_SERVER(dir
), err
, &exception
);
3759 case -NFS4ERR_WRONGSEC
:
3761 if (client
!= *clnt
)
3763 client
= nfs4_negotiate_security(client
, dir
, name
);
3765 return PTR_ERR(client
);
3767 exception
.retry
= 1;
3770 err
= nfs4_handle_exception(NFS_SERVER(dir
), err
, &exception
);
3772 } while (exception
.retry
);
3777 else if (client
!= *clnt
)
3778 rpc_shutdown_client(client
);
3783 static int nfs4_proc_lookup(struct inode
*dir
, const struct qstr
*name
,
3784 struct nfs_fh
*fhandle
, struct nfs_fattr
*fattr
,
3785 struct nfs4_label
*label
)
3788 struct rpc_clnt
*client
= NFS_CLIENT(dir
);
3790 status
= nfs4_proc_lookup_common(&client
, dir
, name
, fhandle
, fattr
, label
);
3791 if (client
!= NFS_CLIENT(dir
)) {
3792 rpc_shutdown_client(client
);
3793 nfs_fixup_secinfo_attributes(fattr
);
3799 nfs4_proc_lookup_mountpoint(struct inode
*dir
, const struct qstr
*name
,
3800 struct nfs_fh
*fhandle
, struct nfs_fattr
*fattr
)
3802 struct rpc_clnt
*client
= NFS_CLIENT(dir
);
3805 status
= nfs4_proc_lookup_common(&client
, dir
, name
, fhandle
, fattr
, NULL
);
3807 return ERR_PTR(status
);
3808 return (client
== NFS_CLIENT(dir
)) ? rpc_clone_client(client
) : client
;
3811 static int _nfs4_proc_access(struct inode
*inode
, struct nfs_access_entry
*entry
)
3813 struct nfs_server
*server
= NFS_SERVER(inode
);
3814 struct nfs4_accessargs args
= {
3815 .fh
= NFS_FH(inode
),
3816 .bitmask
= server
->cache_consistency_bitmask
,
3818 struct nfs4_accessres res
= {
3821 struct rpc_message msg
= {
3822 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_ACCESS
],
3825 .rpc_cred
= entry
->cred
,
3827 int mode
= entry
->mask
;
3831 * Determine which access bits we want to ask for...
3833 if (mode
& MAY_READ
)
3834 args
.access
|= NFS4_ACCESS_READ
;
3835 if (S_ISDIR(inode
->i_mode
)) {
3836 if (mode
& MAY_WRITE
)
3837 args
.access
|= NFS4_ACCESS_MODIFY
| NFS4_ACCESS_EXTEND
| NFS4_ACCESS_DELETE
;
3838 if (mode
& MAY_EXEC
)
3839 args
.access
|= NFS4_ACCESS_LOOKUP
;
3841 if (mode
& MAY_WRITE
)
3842 args
.access
|= NFS4_ACCESS_MODIFY
| NFS4_ACCESS_EXTEND
;
3843 if (mode
& MAY_EXEC
)
3844 args
.access
|= NFS4_ACCESS_EXECUTE
;
3847 res
.fattr
= nfs_alloc_fattr();
3848 if (res
.fattr
== NULL
)
3851 status
= nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
3853 nfs_access_set_mask(entry
, res
.access
);
3854 nfs_refresh_inode(inode
, res
.fattr
);
3856 nfs_free_fattr(res
.fattr
);
3860 static int nfs4_proc_access(struct inode
*inode
, struct nfs_access_entry
*entry
)
3862 struct nfs4_exception exception
= { };
3865 err
= _nfs4_proc_access(inode
, entry
);
3866 trace_nfs4_access(inode
, err
);
3867 err
= nfs4_handle_exception(NFS_SERVER(inode
), err
,
3869 } while (exception
.retry
);
3874 * TODO: For the time being, we don't try to get any attributes
3875 * along with any of the zero-copy operations READ, READDIR,
3878 * In the case of the first three, we want to put the GETATTR
3879 * after the read-type operation -- this is because it is hard
3880 * to predict the length of a GETATTR response in v4, and thus
3881 * align the READ data correctly. This means that the GETATTR
3882 * may end up partially falling into the page cache, and we should
3883 * shift it into the 'tail' of the xdr_buf before processing.
3884 * To do this efficiently, we need to know the total length
3885 * of data received, which doesn't seem to be available outside
3888 * In the case of WRITE, we also want to put the GETATTR after
3889 * the operation -- in this case because we want to make sure
3890 * we get the post-operation mtime and size.
3892 * Both of these changes to the XDR layer would in fact be quite
3893 * minor, but I decided to leave them for a subsequent patch.
3895 static int _nfs4_proc_readlink(struct inode
*inode
, struct page
*page
,
3896 unsigned int pgbase
, unsigned int pglen
)
3898 struct nfs4_readlink args
= {
3899 .fh
= NFS_FH(inode
),
3904 struct nfs4_readlink_res res
;
3905 struct rpc_message msg
= {
3906 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_READLINK
],
3911 return nfs4_call_sync(NFS_SERVER(inode
)->client
, NFS_SERVER(inode
), &msg
, &args
.seq_args
, &res
.seq_res
, 0);
3914 static int nfs4_proc_readlink(struct inode
*inode
, struct page
*page
,
3915 unsigned int pgbase
, unsigned int pglen
)
3917 struct nfs4_exception exception
= { };
3920 err
= _nfs4_proc_readlink(inode
, page
, pgbase
, pglen
);
3921 trace_nfs4_readlink(inode
, err
);
3922 err
= nfs4_handle_exception(NFS_SERVER(inode
), err
,
3924 } while (exception
.retry
);
3929 * This is just for mknod. open(O_CREAT) will always do ->open_context().
3932 nfs4_proc_create(struct inode
*dir
, struct dentry
*dentry
, struct iattr
*sattr
,
3935 struct nfs4_label l
, *ilabel
= NULL
;
3936 struct nfs_open_context
*ctx
;
3937 struct nfs4_state
*state
;
3940 ctx
= alloc_nfs_open_context(dentry
, FMODE_READ
);
3942 return PTR_ERR(ctx
);
3944 ilabel
= nfs4_label_init_security(dir
, dentry
, sattr
, &l
);
3946 sattr
->ia_mode
&= ~current_umask();
3947 state
= nfs4_do_open(dir
, ctx
, flags
, sattr
, ilabel
, NULL
);
3948 if (IS_ERR(state
)) {
3949 status
= PTR_ERR(state
);
3953 nfs4_label_release_security(ilabel
);
3954 put_nfs_open_context(ctx
);
3958 static int _nfs4_proc_remove(struct inode
*dir
, const struct qstr
*name
)
3960 struct nfs_server
*server
= NFS_SERVER(dir
);
3961 struct nfs_removeargs args
= {
3965 struct nfs_removeres res
= {
3968 struct rpc_message msg
= {
3969 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_REMOVE
],
3975 status
= nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 1);
3977 update_changeattr(dir
, &res
.cinfo
);
3981 static int nfs4_proc_remove(struct inode
*dir
, const struct qstr
*name
)
3983 struct nfs4_exception exception
= { };
3986 err
= _nfs4_proc_remove(dir
, name
);
3987 trace_nfs4_remove(dir
, name
, err
);
3988 err
= nfs4_handle_exception(NFS_SERVER(dir
), err
,
3990 } while (exception
.retry
);
3994 static void nfs4_proc_unlink_setup(struct rpc_message
*msg
, struct inode
*dir
)
3996 struct nfs_server
*server
= NFS_SERVER(dir
);
3997 struct nfs_removeargs
*args
= msg
->rpc_argp
;
3998 struct nfs_removeres
*res
= msg
->rpc_resp
;
4000 res
->server
= server
;
4001 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_REMOVE
];
4002 nfs4_init_sequence(&args
->seq_args
, &res
->seq_res
, 1);
4004 nfs_fattr_init(res
->dir_attr
);
4007 static void nfs4_proc_unlink_rpc_prepare(struct rpc_task
*task
, struct nfs_unlinkdata
*data
)
4009 nfs4_setup_sequence(NFS_SB(data
->dentry
->d_sb
),
4010 &data
->args
.seq_args
,
4015 static int nfs4_proc_unlink_done(struct rpc_task
*task
, struct inode
*dir
)
4017 struct nfs_unlinkdata
*data
= task
->tk_calldata
;
4018 struct nfs_removeres
*res
= &data
->res
;
4020 if (!nfs4_sequence_done(task
, &res
->seq_res
))
4022 if (nfs4_async_handle_error(task
, res
->server
, NULL
,
4023 &data
->timeout
) == -EAGAIN
)
4025 update_changeattr(dir
, &res
->cinfo
);
4029 static void nfs4_proc_rename_setup(struct rpc_message
*msg
, struct inode
*dir
)
4031 struct nfs_server
*server
= NFS_SERVER(dir
);
4032 struct nfs_renameargs
*arg
= msg
->rpc_argp
;
4033 struct nfs_renameres
*res
= msg
->rpc_resp
;
4035 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RENAME
];
4036 res
->server
= server
;
4037 nfs4_init_sequence(&arg
->seq_args
, &res
->seq_res
, 1);
4040 static void nfs4_proc_rename_rpc_prepare(struct rpc_task
*task
, struct nfs_renamedata
*data
)
4042 nfs4_setup_sequence(NFS_SERVER(data
->old_dir
),
4043 &data
->args
.seq_args
,
4048 static int nfs4_proc_rename_done(struct rpc_task
*task
, struct inode
*old_dir
,
4049 struct inode
*new_dir
)
4051 struct nfs_renamedata
*data
= task
->tk_calldata
;
4052 struct nfs_renameres
*res
= &data
->res
;
4054 if (!nfs4_sequence_done(task
, &res
->seq_res
))
4056 if (nfs4_async_handle_error(task
, res
->server
, NULL
, &data
->timeout
) == -EAGAIN
)
4059 update_changeattr(old_dir
, &res
->old_cinfo
);
4060 update_changeattr(new_dir
, &res
->new_cinfo
);
4064 static int _nfs4_proc_link(struct inode
*inode
, struct inode
*dir
, const struct qstr
*name
)
4066 struct nfs_server
*server
= NFS_SERVER(inode
);
4067 struct nfs4_link_arg arg
= {
4068 .fh
= NFS_FH(inode
),
4069 .dir_fh
= NFS_FH(dir
),
4071 .bitmask
= server
->attr_bitmask
,
4073 struct nfs4_link_res res
= {
4077 struct rpc_message msg
= {
4078 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LINK
],
4082 int status
= -ENOMEM
;
4084 res
.fattr
= nfs_alloc_fattr();
4085 if (res
.fattr
== NULL
)
4088 res
.label
= nfs4_label_alloc(server
, GFP_KERNEL
);
4089 if (IS_ERR(res
.label
)) {
4090 status
= PTR_ERR(res
.label
);
4093 arg
.bitmask
= nfs4_bitmask(server
, res
.label
);
4095 status
= nfs4_call_sync(server
->client
, server
, &msg
, &arg
.seq_args
, &res
.seq_res
, 1);
4097 update_changeattr(dir
, &res
.cinfo
);
4098 status
= nfs_post_op_update_inode(inode
, res
.fattr
);
4100 nfs_setsecurity(inode
, res
.fattr
, res
.label
);
4104 nfs4_label_free(res
.label
);
4107 nfs_free_fattr(res
.fattr
);
4111 static int nfs4_proc_link(struct inode
*inode
, struct inode
*dir
, const struct qstr
*name
)
4113 struct nfs4_exception exception
= { };
4116 err
= nfs4_handle_exception(NFS_SERVER(inode
),
4117 _nfs4_proc_link(inode
, dir
, name
),
4119 } while (exception
.retry
);
4123 struct nfs4_createdata
{
4124 struct rpc_message msg
;
4125 struct nfs4_create_arg arg
;
4126 struct nfs4_create_res res
;
4128 struct nfs_fattr fattr
;
4129 struct nfs4_label
*label
;
4132 static struct nfs4_createdata
*nfs4_alloc_createdata(struct inode
*dir
,
4133 const struct qstr
*name
, struct iattr
*sattr
, u32 ftype
)
4135 struct nfs4_createdata
*data
;
4137 data
= kzalloc(sizeof(*data
), GFP_KERNEL
);
4139 struct nfs_server
*server
= NFS_SERVER(dir
);
4141 data
->label
= nfs4_label_alloc(server
, GFP_KERNEL
);
4142 if (IS_ERR(data
->label
))
4145 data
->msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_CREATE
];
4146 data
->msg
.rpc_argp
= &data
->arg
;
4147 data
->msg
.rpc_resp
= &data
->res
;
4148 data
->arg
.dir_fh
= NFS_FH(dir
);
4149 data
->arg
.server
= server
;
4150 data
->arg
.name
= name
;
4151 data
->arg
.attrs
= sattr
;
4152 data
->arg
.ftype
= ftype
;
4153 data
->arg
.bitmask
= nfs4_bitmask(server
, data
->label
);
4154 data
->res
.server
= server
;
4155 data
->res
.fh
= &data
->fh
;
4156 data
->res
.fattr
= &data
->fattr
;
4157 data
->res
.label
= data
->label
;
4158 nfs_fattr_init(data
->res
.fattr
);
4166 static int nfs4_do_create(struct inode
*dir
, struct dentry
*dentry
, struct nfs4_createdata
*data
)
4168 int status
= nfs4_call_sync(NFS_SERVER(dir
)->client
, NFS_SERVER(dir
), &data
->msg
,
4169 &data
->arg
.seq_args
, &data
->res
.seq_res
, 1);
4171 update_changeattr(dir
, &data
->res
.dir_cinfo
);
4172 status
= nfs_instantiate(dentry
, data
->res
.fh
, data
->res
.fattr
, data
->res
.label
);
4177 static void nfs4_free_createdata(struct nfs4_createdata
*data
)
4179 nfs4_label_free(data
->label
);
4183 static int _nfs4_proc_symlink(struct inode
*dir
, struct dentry
*dentry
,
4184 struct page
*page
, unsigned int len
, struct iattr
*sattr
,
4185 struct nfs4_label
*label
)
4187 struct nfs4_createdata
*data
;
4188 int status
= -ENAMETOOLONG
;
4190 if (len
> NFS4_MAXPATHLEN
)
4194 data
= nfs4_alloc_createdata(dir
, &dentry
->d_name
, sattr
, NF4LNK
);
4198 data
->msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SYMLINK
];
4199 data
->arg
.u
.symlink
.pages
= &page
;
4200 data
->arg
.u
.symlink
.len
= len
;
4201 data
->arg
.label
= label
;
4203 status
= nfs4_do_create(dir
, dentry
, data
);
4205 nfs4_free_createdata(data
);
4210 static int nfs4_proc_symlink(struct inode
*dir
, struct dentry
*dentry
,
4211 struct page
*page
, unsigned int len
, struct iattr
*sattr
)
4213 struct nfs4_exception exception
= { };
4214 struct nfs4_label l
, *label
= NULL
;
4217 label
= nfs4_label_init_security(dir
, dentry
, sattr
, &l
);
4220 err
= _nfs4_proc_symlink(dir
, dentry
, page
, len
, sattr
, label
);
4221 trace_nfs4_symlink(dir
, &dentry
->d_name
, err
);
4222 err
= nfs4_handle_exception(NFS_SERVER(dir
), err
,
4224 } while (exception
.retry
);
4226 nfs4_label_release_security(label
);
4230 static int _nfs4_proc_mkdir(struct inode
*dir
, struct dentry
*dentry
,
4231 struct iattr
*sattr
, struct nfs4_label
*label
)
4233 struct nfs4_createdata
*data
;
4234 int status
= -ENOMEM
;
4236 data
= nfs4_alloc_createdata(dir
, &dentry
->d_name
, sattr
, NF4DIR
);
4240 data
->arg
.label
= label
;
4241 status
= nfs4_do_create(dir
, dentry
, data
);
4243 nfs4_free_createdata(data
);
4248 static int nfs4_proc_mkdir(struct inode
*dir
, struct dentry
*dentry
,
4249 struct iattr
*sattr
)
4251 struct nfs4_exception exception
= { };
4252 struct nfs4_label l
, *label
= NULL
;
4255 label
= nfs4_label_init_security(dir
, dentry
, sattr
, &l
);
4257 sattr
->ia_mode
&= ~current_umask();
4259 err
= _nfs4_proc_mkdir(dir
, dentry
, sattr
, label
);
4260 trace_nfs4_mkdir(dir
, &dentry
->d_name
, err
);
4261 err
= nfs4_handle_exception(NFS_SERVER(dir
), err
,
4263 } while (exception
.retry
);
4264 nfs4_label_release_security(label
);
4269 static int _nfs4_proc_readdir(struct dentry
*dentry
, struct rpc_cred
*cred
,
4270 u64 cookie
, struct page
**pages
, unsigned int count
, int plus
)
4272 struct inode
*dir
= d_inode(dentry
);
4273 struct nfs4_readdir_arg args
= {
4278 .bitmask
= NFS_SERVER(d_inode(dentry
))->attr_bitmask
,
4281 struct nfs4_readdir_res res
;
4282 struct rpc_message msg
= {
4283 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_READDIR
],
4290 dprintk("%s: dentry = %pd2, cookie = %Lu\n", __func__
,
4292 (unsigned long long)cookie
);
4293 nfs4_setup_readdir(cookie
, NFS_I(dir
)->cookieverf
, dentry
, &args
);
4294 res
.pgbase
= args
.pgbase
;
4295 status
= nfs4_call_sync(NFS_SERVER(dir
)->client
, NFS_SERVER(dir
), &msg
, &args
.seq_args
, &res
.seq_res
, 0);
4297 memcpy(NFS_I(dir
)->cookieverf
, res
.verifier
.data
, NFS4_VERIFIER_SIZE
);
4298 status
+= args
.pgbase
;
4301 nfs_invalidate_atime(dir
);
4303 dprintk("%s: returns %d\n", __func__
, status
);
4307 static int nfs4_proc_readdir(struct dentry
*dentry
, struct rpc_cred
*cred
,
4308 u64 cookie
, struct page
**pages
, unsigned int count
, int plus
)
4310 struct nfs4_exception exception
= { };
4313 err
= _nfs4_proc_readdir(dentry
, cred
, cookie
,
4314 pages
, count
, plus
);
4315 trace_nfs4_readdir(d_inode(dentry
), err
);
4316 err
= nfs4_handle_exception(NFS_SERVER(d_inode(dentry
)), err
,
4318 } while (exception
.retry
);
4322 static int _nfs4_proc_mknod(struct inode
*dir
, struct dentry
*dentry
,
4323 struct iattr
*sattr
, struct nfs4_label
*label
, dev_t rdev
)
4325 struct nfs4_createdata
*data
;
4326 int mode
= sattr
->ia_mode
;
4327 int status
= -ENOMEM
;
4329 data
= nfs4_alloc_createdata(dir
, &dentry
->d_name
, sattr
, NF4SOCK
);
4334 data
->arg
.ftype
= NF4FIFO
;
4335 else if (S_ISBLK(mode
)) {
4336 data
->arg
.ftype
= NF4BLK
;
4337 data
->arg
.u
.device
.specdata1
= MAJOR(rdev
);
4338 data
->arg
.u
.device
.specdata2
= MINOR(rdev
);
4340 else if (S_ISCHR(mode
)) {
4341 data
->arg
.ftype
= NF4CHR
;
4342 data
->arg
.u
.device
.specdata1
= MAJOR(rdev
);
4343 data
->arg
.u
.device
.specdata2
= MINOR(rdev
);
4344 } else if (!S_ISSOCK(mode
)) {
4349 data
->arg
.label
= label
;
4350 status
= nfs4_do_create(dir
, dentry
, data
);
4352 nfs4_free_createdata(data
);
4357 static int nfs4_proc_mknod(struct inode
*dir
, struct dentry
*dentry
,
4358 struct iattr
*sattr
, dev_t rdev
)
4360 struct nfs4_exception exception
= { };
4361 struct nfs4_label l
, *label
= NULL
;
4364 label
= nfs4_label_init_security(dir
, dentry
, sattr
, &l
);
4366 sattr
->ia_mode
&= ~current_umask();
4368 err
= _nfs4_proc_mknod(dir
, dentry
, sattr
, label
, rdev
);
4369 trace_nfs4_mknod(dir
, &dentry
->d_name
, err
);
4370 err
= nfs4_handle_exception(NFS_SERVER(dir
), err
,
4372 } while (exception
.retry
);
4374 nfs4_label_release_security(label
);
4379 static int _nfs4_proc_statfs(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
4380 struct nfs_fsstat
*fsstat
)
4382 struct nfs4_statfs_arg args
= {
4384 .bitmask
= server
->attr_bitmask
,
4386 struct nfs4_statfs_res res
= {
4389 struct rpc_message msg
= {
4390 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_STATFS
],
4395 nfs_fattr_init(fsstat
->fattr
);
4396 return nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
4399 static int nfs4_proc_statfs(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fsstat
*fsstat
)
4401 struct nfs4_exception exception
= { };
4404 err
= nfs4_handle_exception(server
,
4405 _nfs4_proc_statfs(server
, fhandle
, fsstat
),
4407 } while (exception
.retry
);
4411 static int _nfs4_do_fsinfo(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
4412 struct nfs_fsinfo
*fsinfo
)
4414 struct nfs4_fsinfo_arg args
= {
4416 .bitmask
= server
->attr_bitmask
,
4418 struct nfs4_fsinfo_res res
= {
4421 struct rpc_message msg
= {
4422 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_FSINFO
],
4427 return nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
4430 static int nfs4_do_fsinfo(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fsinfo
*fsinfo
)
4432 struct nfs4_exception exception
= { };
4433 unsigned long now
= jiffies
;
4437 err
= _nfs4_do_fsinfo(server
, fhandle
, fsinfo
);
4438 trace_nfs4_fsinfo(server
, fhandle
, fsinfo
->fattr
, err
);
4440 nfs4_set_lease_period(server
->nfs_client
,
4441 fsinfo
->lease_time
* HZ
,
4445 err
= nfs4_handle_exception(server
, err
, &exception
);
4446 } while (exception
.retry
);
4450 static int nfs4_proc_fsinfo(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fsinfo
*fsinfo
)
4454 nfs_fattr_init(fsinfo
->fattr
);
4455 error
= nfs4_do_fsinfo(server
, fhandle
, fsinfo
);
4457 /* block layout checks this! */
4458 server
->pnfs_blksize
= fsinfo
->blksize
;
4459 set_pnfs_layoutdriver(server
, fhandle
, fsinfo
);
4465 static int _nfs4_proc_pathconf(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
4466 struct nfs_pathconf
*pathconf
)
4468 struct nfs4_pathconf_arg args
= {
4470 .bitmask
= server
->attr_bitmask
,
4472 struct nfs4_pathconf_res res
= {
4473 .pathconf
= pathconf
,
4475 struct rpc_message msg
= {
4476 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_PATHCONF
],
4481 /* None of the pathconf attributes are mandatory to implement */
4482 if ((args
.bitmask
[0] & nfs4_pathconf_bitmap
[0]) == 0) {
4483 memset(pathconf
, 0, sizeof(*pathconf
));
4487 nfs_fattr_init(pathconf
->fattr
);
4488 return nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
4491 static int nfs4_proc_pathconf(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
4492 struct nfs_pathconf
*pathconf
)
4494 struct nfs4_exception exception
= { };
4498 err
= nfs4_handle_exception(server
,
4499 _nfs4_proc_pathconf(server
, fhandle
, pathconf
),
4501 } while (exception
.retry
);
4505 int nfs4_set_rw_stateid(nfs4_stateid
*stateid
,
4506 const struct nfs_open_context
*ctx
,
4507 const struct nfs_lock_context
*l_ctx
,
4510 const struct nfs_lockowner
*lockowner
= NULL
;
4513 lockowner
= &l_ctx
->lockowner
;
4514 return nfs4_select_rw_stateid(ctx
->state
, fmode
, lockowner
, stateid
, NULL
);
4516 EXPORT_SYMBOL_GPL(nfs4_set_rw_stateid
);
4518 static bool nfs4_stateid_is_current(nfs4_stateid
*stateid
,
4519 const struct nfs_open_context
*ctx
,
4520 const struct nfs_lock_context
*l_ctx
,
4523 nfs4_stateid current_stateid
;
4525 /* If the current stateid represents a lost lock, then exit */
4526 if (nfs4_set_rw_stateid(¤t_stateid
, ctx
, l_ctx
, fmode
) == -EIO
)
4528 return nfs4_stateid_match(stateid
, ¤t_stateid
);
4531 static bool nfs4_error_stateid_expired(int err
)
4534 case -NFS4ERR_DELEG_REVOKED
:
4535 case -NFS4ERR_ADMIN_REVOKED
:
4536 case -NFS4ERR_BAD_STATEID
:
4537 case -NFS4ERR_STALE_STATEID
:
4538 case -NFS4ERR_OLD_STATEID
:
4539 case -NFS4ERR_OPENMODE
:
4540 case -NFS4ERR_EXPIRED
:
4546 void __nfs4_read_done_cb(struct nfs_pgio_header
*hdr
)
4548 nfs_invalidate_atime(hdr
->inode
);
4551 static int nfs4_read_done_cb(struct rpc_task
*task
, struct nfs_pgio_header
*hdr
)
4553 struct nfs_server
*server
= NFS_SERVER(hdr
->inode
);
4555 trace_nfs4_read(hdr
, task
->tk_status
);
4556 if (task
->tk_status
< 0) {
4557 struct nfs4_exception exception
= {
4558 .inode
= hdr
->inode
,
4559 .state
= hdr
->args
.context
->state
,
4560 .stateid
= &hdr
->args
.stateid
,
4562 task
->tk_status
= nfs4_async_handle_exception(task
,
4563 server
, task
->tk_status
, &exception
);
4564 if (exception
.retry
) {
4565 rpc_restart_call_prepare(task
);
4570 __nfs4_read_done_cb(hdr
);
4571 if (task
->tk_status
> 0)
4572 renew_lease(server
, hdr
->timestamp
);
4576 static bool nfs4_read_stateid_changed(struct rpc_task
*task
,
4577 struct nfs_pgio_args
*args
)
4580 if (!nfs4_error_stateid_expired(task
->tk_status
) ||
4581 nfs4_stateid_is_current(&args
->stateid
,
4586 rpc_restart_call_prepare(task
);
4590 static int nfs4_read_done(struct rpc_task
*task
, struct nfs_pgio_header
*hdr
)
4593 dprintk("--> %s\n", __func__
);
4595 if (!nfs4_sequence_done(task
, &hdr
->res
.seq_res
))
4597 if (nfs4_read_stateid_changed(task
, &hdr
->args
))
4599 return hdr
->pgio_done_cb
? hdr
->pgio_done_cb(task
, hdr
) :
4600 nfs4_read_done_cb(task
, hdr
);
4603 static void nfs4_proc_read_setup(struct nfs_pgio_header
*hdr
,
4604 struct rpc_message
*msg
)
4606 hdr
->timestamp
= jiffies
;
4607 if (!hdr
->pgio_done_cb
)
4608 hdr
->pgio_done_cb
= nfs4_read_done_cb
;
4609 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_READ
];
4610 nfs4_init_sequence(&hdr
->args
.seq_args
, &hdr
->res
.seq_res
, 0);
4613 static int nfs4_proc_pgio_rpc_prepare(struct rpc_task
*task
,
4614 struct nfs_pgio_header
*hdr
)
4616 if (nfs4_setup_sequence(NFS_SERVER(hdr
->inode
),
4617 &hdr
->args
.seq_args
,
4621 if (nfs4_set_rw_stateid(&hdr
->args
.stateid
, hdr
->args
.context
,
4622 hdr
->args
.lock_context
,
4623 hdr
->rw_ops
->rw_mode
) == -EIO
)
4625 if (unlikely(test_bit(NFS_CONTEXT_BAD
, &hdr
->args
.context
->flags
)))
4630 static int nfs4_write_done_cb(struct rpc_task
*task
,
4631 struct nfs_pgio_header
*hdr
)
4633 struct inode
*inode
= hdr
->inode
;
4635 trace_nfs4_write(hdr
, task
->tk_status
);
4636 if (task
->tk_status
< 0) {
4637 struct nfs4_exception exception
= {
4638 .inode
= hdr
->inode
,
4639 .state
= hdr
->args
.context
->state
,
4640 .stateid
= &hdr
->args
.stateid
,
4642 task
->tk_status
= nfs4_async_handle_exception(task
,
4643 NFS_SERVER(inode
), task
->tk_status
,
4645 if (exception
.retry
) {
4646 rpc_restart_call_prepare(task
);
4650 if (task
->tk_status
>= 0) {
4651 renew_lease(NFS_SERVER(inode
), hdr
->timestamp
);
4652 nfs_writeback_update_inode(hdr
);
4657 static bool nfs4_write_stateid_changed(struct rpc_task
*task
,
4658 struct nfs_pgio_args
*args
)
4661 if (!nfs4_error_stateid_expired(task
->tk_status
) ||
4662 nfs4_stateid_is_current(&args
->stateid
,
4667 rpc_restart_call_prepare(task
);
4671 static int nfs4_write_done(struct rpc_task
*task
, struct nfs_pgio_header
*hdr
)
4673 if (!nfs4_sequence_done(task
, &hdr
->res
.seq_res
))
4675 if (nfs4_write_stateid_changed(task
, &hdr
->args
))
4677 return hdr
->pgio_done_cb
? hdr
->pgio_done_cb(task
, hdr
) :
4678 nfs4_write_done_cb(task
, hdr
);
4682 bool nfs4_write_need_cache_consistency_data(struct nfs_pgio_header
*hdr
)
4684 /* Don't request attributes for pNFS or O_DIRECT writes */
4685 if (hdr
->ds_clp
!= NULL
|| hdr
->dreq
!= NULL
)
4687 /* Otherwise, request attributes if and only if we don't hold
4690 return nfs4_have_delegation(hdr
->inode
, FMODE_READ
) == 0;
4693 static void nfs4_proc_write_setup(struct nfs_pgio_header
*hdr
,
4694 struct rpc_message
*msg
)
4696 struct nfs_server
*server
= NFS_SERVER(hdr
->inode
);
4698 if (!nfs4_write_need_cache_consistency_data(hdr
)) {
4699 hdr
->args
.bitmask
= NULL
;
4700 hdr
->res
.fattr
= NULL
;
4702 hdr
->args
.bitmask
= server
->cache_consistency_bitmask
;
4704 if (!hdr
->pgio_done_cb
)
4705 hdr
->pgio_done_cb
= nfs4_write_done_cb
;
4706 hdr
->res
.server
= server
;
4707 hdr
->timestamp
= jiffies
;
4709 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_WRITE
];
4710 nfs4_init_sequence(&hdr
->args
.seq_args
, &hdr
->res
.seq_res
, 1);
4713 static void nfs4_proc_commit_rpc_prepare(struct rpc_task
*task
, struct nfs_commit_data
*data
)
4715 nfs4_setup_sequence(NFS_SERVER(data
->inode
),
4716 &data
->args
.seq_args
,
4721 static int nfs4_commit_done_cb(struct rpc_task
*task
, struct nfs_commit_data
*data
)
4723 struct inode
*inode
= data
->inode
;
4725 trace_nfs4_commit(data
, task
->tk_status
);
4726 if (nfs4_async_handle_error(task
, NFS_SERVER(inode
),
4727 NULL
, NULL
) == -EAGAIN
) {
4728 rpc_restart_call_prepare(task
);
4734 static int nfs4_commit_done(struct rpc_task
*task
, struct nfs_commit_data
*data
)
4736 if (!nfs4_sequence_done(task
, &data
->res
.seq_res
))
4738 return data
->commit_done_cb(task
, data
);
4741 static void nfs4_proc_commit_setup(struct nfs_commit_data
*data
, struct rpc_message
*msg
)
4743 struct nfs_server
*server
= NFS_SERVER(data
->inode
);
4745 if (data
->commit_done_cb
== NULL
)
4746 data
->commit_done_cb
= nfs4_commit_done_cb
;
4747 data
->res
.server
= server
;
4748 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_COMMIT
];
4749 nfs4_init_sequence(&data
->args
.seq_args
, &data
->res
.seq_res
, 1);
4752 struct nfs4_renewdata
{
4753 struct nfs_client
*client
;
4754 unsigned long timestamp
;
4758 * nfs4_proc_async_renew(): This is not one of the nfs_rpc_ops; it is a special
4759 * standalone procedure for queueing an asynchronous RENEW.
4761 static void nfs4_renew_release(void *calldata
)
4763 struct nfs4_renewdata
*data
= calldata
;
4764 struct nfs_client
*clp
= data
->client
;
4766 if (atomic_read(&clp
->cl_count
) > 1)
4767 nfs4_schedule_state_renewal(clp
);
4768 nfs_put_client(clp
);
4772 static void nfs4_renew_done(struct rpc_task
*task
, void *calldata
)
4774 struct nfs4_renewdata
*data
= calldata
;
4775 struct nfs_client
*clp
= data
->client
;
4776 unsigned long timestamp
= data
->timestamp
;
4778 trace_nfs4_renew_async(clp
, task
->tk_status
);
4779 switch (task
->tk_status
) {
4782 case -NFS4ERR_LEASE_MOVED
:
4783 nfs4_schedule_lease_moved_recovery(clp
);
4786 /* Unless we're shutting down, schedule state recovery! */
4787 if (test_bit(NFS_CS_RENEWD
, &clp
->cl_res_state
) == 0)
4789 if (task
->tk_status
!= NFS4ERR_CB_PATH_DOWN
) {
4790 nfs4_schedule_lease_recovery(clp
);
4793 nfs4_schedule_path_down_recovery(clp
);
4795 do_renew_lease(clp
, timestamp
);
4798 static const struct rpc_call_ops nfs4_renew_ops
= {
4799 .rpc_call_done
= nfs4_renew_done
,
4800 .rpc_release
= nfs4_renew_release
,
4803 static int nfs4_proc_async_renew(struct nfs_client
*clp
, struct rpc_cred
*cred
, unsigned renew_flags
)
4805 struct rpc_message msg
= {
4806 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RENEW
],
4810 struct nfs4_renewdata
*data
;
4812 if (renew_flags
== 0)
4814 if (!atomic_inc_not_zero(&clp
->cl_count
))
4816 data
= kmalloc(sizeof(*data
), GFP_NOFS
);
4820 data
->timestamp
= jiffies
;
4821 return rpc_call_async(clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
,
4822 &nfs4_renew_ops
, data
);
4825 static int nfs4_proc_renew(struct nfs_client
*clp
, struct rpc_cred
*cred
)
4827 struct rpc_message msg
= {
4828 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RENEW
],
4832 unsigned long now
= jiffies
;
4835 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
4838 do_renew_lease(clp
, now
);
4842 static inline int nfs4_server_supports_acls(struct nfs_server
*server
)
4844 return server
->caps
& NFS_CAP_ACLS
;
4847 /* Assuming that XATTR_SIZE_MAX is a multiple of PAGE_SIZE, and that
4848 * it's OK to put sizeof(void) * (XATTR_SIZE_MAX/PAGE_SIZE) bytes on
4851 #define NFS4ACL_MAXPAGES DIV_ROUND_UP(XATTR_SIZE_MAX, PAGE_SIZE)
4853 static int buf_to_pages_noslab(const void *buf
, size_t buflen
,
4854 struct page
**pages
)
4856 struct page
*newpage
, **spages
;
4862 len
= min_t(size_t, PAGE_SIZE
, buflen
);
4863 newpage
= alloc_page(GFP_KERNEL
);
4865 if (newpage
== NULL
)
4867 memcpy(page_address(newpage
), buf
, len
);
4872 } while (buflen
!= 0);
4878 __free_page(spages
[rc
-1]);
4882 struct nfs4_cached_acl
{
4888 static void nfs4_set_cached_acl(struct inode
*inode
, struct nfs4_cached_acl
*acl
)
4890 struct nfs_inode
*nfsi
= NFS_I(inode
);
4892 spin_lock(&inode
->i_lock
);
4893 kfree(nfsi
->nfs4_acl
);
4894 nfsi
->nfs4_acl
= acl
;
4895 spin_unlock(&inode
->i_lock
);
4898 static void nfs4_zap_acl_attr(struct inode
*inode
)
4900 nfs4_set_cached_acl(inode
, NULL
);
4903 static inline ssize_t
nfs4_read_cached_acl(struct inode
*inode
, char *buf
, size_t buflen
)
4905 struct nfs_inode
*nfsi
= NFS_I(inode
);
4906 struct nfs4_cached_acl
*acl
;
4909 spin_lock(&inode
->i_lock
);
4910 acl
= nfsi
->nfs4_acl
;
4913 if (buf
== NULL
) /* user is just asking for length */
4915 if (acl
->cached
== 0)
4917 ret
= -ERANGE
; /* see getxattr(2) man page */
4918 if (acl
->len
> buflen
)
4920 memcpy(buf
, acl
->data
, acl
->len
);
4924 spin_unlock(&inode
->i_lock
);
4928 static void nfs4_write_cached_acl(struct inode
*inode
, struct page
**pages
, size_t pgbase
, size_t acl_len
)
4930 struct nfs4_cached_acl
*acl
;
4931 size_t buflen
= sizeof(*acl
) + acl_len
;
4933 if (buflen
<= PAGE_SIZE
) {
4934 acl
= kmalloc(buflen
, GFP_KERNEL
);
4938 _copy_from_pages(acl
->data
, pages
, pgbase
, acl_len
);
4940 acl
= kmalloc(sizeof(*acl
), GFP_KERNEL
);
4947 nfs4_set_cached_acl(inode
, acl
);
4951 * The getxattr API returns the required buffer length when called with a
4952 * NULL buf. The NFSv4 acl tool then calls getxattr again after allocating
4953 * the required buf. On a NULL buf, we send a page of data to the server
4954 * guessing that the ACL request can be serviced by a page. If so, we cache
4955 * up to the page of ACL data, and the 2nd call to getxattr is serviced by
4956 * the cache. If not so, we throw away the page, and cache the required
4957 * length. The next getxattr call will then produce another round trip to
4958 * the server, this time with the input buf of the required size.
4960 static ssize_t
__nfs4_get_acl_uncached(struct inode
*inode
, void *buf
, size_t buflen
)
4962 struct page
*pages
[NFS4ACL_MAXPAGES
] = {NULL
, };
4963 struct nfs_getaclargs args
= {
4964 .fh
= NFS_FH(inode
),
4968 struct nfs_getaclres res
= {
4971 struct rpc_message msg
= {
4972 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GETACL
],
4976 unsigned int npages
= DIV_ROUND_UP(buflen
, PAGE_SIZE
);
4977 int ret
= -ENOMEM
, i
;
4979 /* As long as we're doing a round trip to the server anyway,
4980 * let's be prepared for a page of acl data. */
4983 if (npages
> ARRAY_SIZE(pages
))
4986 for (i
= 0; i
< npages
; i
++) {
4987 pages
[i
] = alloc_page(GFP_KERNEL
);
4992 /* for decoding across pages */
4993 res
.acl_scratch
= alloc_page(GFP_KERNEL
);
4994 if (!res
.acl_scratch
)
4997 args
.acl_len
= npages
* PAGE_SIZE
;
4999 dprintk("%s buf %p buflen %zu npages %d args.acl_len %zu\n",
5000 __func__
, buf
, buflen
, npages
, args
.acl_len
);
5001 ret
= nfs4_call_sync(NFS_SERVER(inode
)->client
, NFS_SERVER(inode
),
5002 &msg
, &args
.seq_args
, &res
.seq_res
, 0);
5006 /* Handle the case where the passed-in buffer is too short */
5007 if (res
.acl_flags
& NFS4_ACL_TRUNC
) {
5008 /* Did the user only issue a request for the acl length? */
5014 nfs4_write_cached_acl(inode
, pages
, res
.acl_data_offset
, res
.acl_len
);
5016 if (res
.acl_len
> buflen
) {
5020 _copy_from_pages(buf
, pages
, res
.acl_data_offset
, res
.acl_len
);
5025 for (i
= 0; i
< npages
; i
++)
5027 __free_page(pages
[i
]);
5028 if (res
.acl_scratch
)
5029 __free_page(res
.acl_scratch
);
5033 static ssize_t
nfs4_get_acl_uncached(struct inode
*inode
, void *buf
, size_t buflen
)
5035 struct nfs4_exception exception
= { };
5038 ret
= __nfs4_get_acl_uncached(inode
, buf
, buflen
);
5039 trace_nfs4_get_acl(inode
, ret
);
5042 ret
= nfs4_handle_exception(NFS_SERVER(inode
), ret
, &exception
);
5043 } while (exception
.retry
);
5047 static ssize_t
nfs4_proc_get_acl(struct inode
*inode
, void *buf
, size_t buflen
)
5049 struct nfs_server
*server
= NFS_SERVER(inode
);
5052 if (!nfs4_server_supports_acls(server
))
5054 ret
= nfs_revalidate_inode(server
, inode
);
5057 if (NFS_I(inode
)->cache_validity
& NFS_INO_INVALID_ACL
)
5058 nfs_zap_acl_cache(inode
);
5059 ret
= nfs4_read_cached_acl(inode
, buf
, buflen
);
5061 /* -ENOENT is returned if there is no ACL or if there is an ACL
5062 * but no cached acl data, just the acl length */
5064 return nfs4_get_acl_uncached(inode
, buf
, buflen
);
5067 static int __nfs4_proc_set_acl(struct inode
*inode
, const void *buf
, size_t buflen
)
5069 struct nfs_server
*server
= NFS_SERVER(inode
);
5070 struct page
*pages
[NFS4ACL_MAXPAGES
];
5071 struct nfs_setaclargs arg
= {
5072 .fh
= NFS_FH(inode
),
5076 struct nfs_setaclres res
;
5077 struct rpc_message msg
= {
5078 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETACL
],
5082 unsigned int npages
= DIV_ROUND_UP(buflen
, PAGE_SIZE
);
5085 if (!nfs4_server_supports_acls(server
))
5087 if (npages
> ARRAY_SIZE(pages
))
5089 i
= buf_to_pages_noslab(buf
, buflen
, arg
.acl_pages
);
5092 nfs4_inode_return_delegation(inode
);
5093 ret
= nfs4_call_sync(server
->client
, server
, &msg
, &arg
.seq_args
, &res
.seq_res
, 1);
5096 * Free each page after tx, so the only ref left is
5097 * held by the network stack
5100 put_page(pages
[i
-1]);
5103 * Acl update can result in inode attribute update.
5104 * so mark the attribute cache invalid.
5106 spin_lock(&inode
->i_lock
);
5107 NFS_I(inode
)->cache_validity
|= NFS_INO_INVALID_ATTR
;
5108 spin_unlock(&inode
->i_lock
);
5109 nfs_access_zap_cache(inode
);
5110 nfs_zap_acl_cache(inode
);
5114 static int nfs4_proc_set_acl(struct inode
*inode
, const void *buf
, size_t buflen
)
5116 struct nfs4_exception exception
= { };
5119 err
= __nfs4_proc_set_acl(inode
, buf
, buflen
);
5120 trace_nfs4_set_acl(inode
, err
);
5121 err
= nfs4_handle_exception(NFS_SERVER(inode
), err
,
5123 } while (exception
.retry
);
5127 #ifdef CONFIG_NFS_V4_SECURITY_LABEL
5128 static int _nfs4_get_security_label(struct inode
*inode
, void *buf
,
5131 struct nfs_server
*server
= NFS_SERVER(inode
);
5132 struct nfs_fattr fattr
;
5133 struct nfs4_label label
= {0, 0, buflen
, buf
};
5135 u32 bitmask
[3] = { 0, 0, FATTR4_WORD2_SECURITY_LABEL
};
5136 struct nfs4_getattr_arg arg
= {
5137 .fh
= NFS_FH(inode
),
5140 struct nfs4_getattr_res res
= {
5145 struct rpc_message msg
= {
5146 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GETATTR
],
5152 nfs_fattr_init(&fattr
);
5154 ret
= nfs4_call_sync(server
->client
, server
, &msg
, &arg
.seq_args
, &res
.seq_res
, 0);
5157 if (!(fattr
.valid
& NFS_ATTR_FATTR_V4_SECURITY_LABEL
))
5159 if (buflen
< label
.len
)
5164 static int nfs4_get_security_label(struct inode
*inode
, void *buf
,
5167 struct nfs4_exception exception
= { };
5170 if (!nfs_server_capable(inode
, NFS_CAP_SECURITY_LABEL
))
5174 err
= _nfs4_get_security_label(inode
, buf
, buflen
);
5175 trace_nfs4_get_security_label(inode
, err
);
5176 err
= nfs4_handle_exception(NFS_SERVER(inode
), err
,
5178 } while (exception
.retry
);
5182 static int _nfs4_do_set_security_label(struct inode
*inode
,
5183 struct nfs4_label
*ilabel
,
5184 struct nfs_fattr
*fattr
,
5185 struct nfs4_label
*olabel
)
5188 struct iattr sattr
= {0};
5189 struct nfs_server
*server
= NFS_SERVER(inode
);
5190 const u32 bitmask
[3] = { 0, 0, FATTR4_WORD2_SECURITY_LABEL
};
5191 struct nfs_setattrargs arg
= {
5192 .fh
= NFS_FH(inode
),
5198 struct nfs_setattrres res
= {
5203 struct rpc_message msg
= {
5204 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETATTR
],
5210 nfs4_stateid_copy(&arg
.stateid
, &zero_stateid
);
5212 status
= nfs4_call_sync(server
->client
, server
, &msg
, &arg
.seq_args
, &res
.seq_res
, 1);
5214 dprintk("%s failed: %d\n", __func__
, status
);
5219 static int nfs4_do_set_security_label(struct inode
*inode
,
5220 struct nfs4_label
*ilabel
,
5221 struct nfs_fattr
*fattr
,
5222 struct nfs4_label
*olabel
)
5224 struct nfs4_exception exception
= { };
5228 err
= _nfs4_do_set_security_label(inode
, ilabel
,
5230 trace_nfs4_set_security_label(inode
, err
);
5231 err
= nfs4_handle_exception(NFS_SERVER(inode
), err
,
5233 } while (exception
.retry
);
5238 nfs4_set_security_label(struct inode
*inode
, const void *buf
, size_t buflen
)
5240 struct nfs4_label ilabel
, *olabel
= NULL
;
5241 struct nfs_fattr fattr
;
5242 struct rpc_cred
*cred
;
5245 if (!nfs_server_capable(inode
, NFS_CAP_SECURITY_LABEL
))
5248 nfs_fattr_init(&fattr
);
5252 ilabel
.label
= (char *)buf
;
5253 ilabel
.len
= buflen
;
5255 cred
= rpc_lookup_cred();
5257 return PTR_ERR(cred
);
5259 olabel
= nfs4_label_alloc(NFS_SERVER(inode
), GFP_KERNEL
);
5260 if (IS_ERR(olabel
)) {
5261 status
= -PTR_ERR(olabel
);
5265 status
= nfs4_do_set_security_label(inode
, &ilabel
, &fattr
, olabel
);
5267 nfs_setsecurity(inode
, &fattr
, olabel
);
5269 nfs4_label_free(olabel
);
5274 #endif /* CONFIG_NFS_V4_SECURITY_LABEL */
5277 static void nfs4_init_boot_verifier(const struct nfs_client
*clp
,
5278 nfs4_verifier
*bootverf
)
5282 if (test_bit(NFS4CLNT_PURGE_STATE
, &clp
->cl_state
)) {
5283 /* An impossible timestamp guarantees this value
5284 * will never match a generated boot time. */
5286 verf
[1] = cpu_to_be32(NSEC_PER_SEC
+ 1);
5288 struct nfs_net
*nn
= net_generic(clp
->cl_net
, nfs_net_id
);
5289 verf
[0] = cpu_to_be32(nn
->boot_time
.tv_sec
);
5290 verf
[1] = cpu_to_be32(nn
->boot_time
.tv_nsec
);
5292 memcpy(bootverf
->data
, verf
, sizeof(bootverf
->data
));
5296 nfs4_init_nonuniform_client_string(struct nfs_client
*clp
)
5301 if (clp
->cl_owner_id
!= NULL
)
5305 len
= 14 + strlen(clp
->cl_ipaddr
) + 1 +
5306 strlen(rpc_peeraddr2str(clp
->cl_rpcclient
, RPC_DISPLAY_ADDR
)) +
5308 strlen(rpc_peeraddr2str(clp
->cl_rpcclient
, RPC_DISPLAY_PROTO
)) +
5312 if (len
> NFS4_OPAQUE_LIMIT
+ 1)
5316 * Since this string is allocated at mount time, and held until the
5317 * nfs_client is destroyed, we can use GFP_KERNEL here w/o worrying
5318 * about a memory-reclaim deadlock.
5320 str
= kmalloc(len
, GFP_KERNEL
);
5325 scnprintf(str
, len
, "Linux NFSv4.0 %s/%s %s",
5327 rpc_peeraddr2str(clp
->cl_rpcclient
, RPC_DISPLAY_ADDR
),
5328 rpc_peeraddr2str(clp
->cl_rpcclient
, RPC_DISPLAY_PROTO
));
5331 clp
->cl_owner_id
= str
;
5336 nfs4_init_uniquifier_client_string(struct nfs_client
*clp
)
5341 len
= 10 + 10 + 1 + 10 + 1 +
5342 strlen(nfs4_client_id_uniquifier
) + 1 +
5343 strlen(clp
->cl_rpcclient
->cl_nodename
) + 1;
5345 if (len
> NFS4_OPAQUE_LIMIT
+ 1)
5349 * Since this string is allocated at mount time, and held until the
5350 * nfs_client is destroyed, we can use GFP_KERNEL here w/o worrying
5351 * about a memory-reclaim deadlock.
5353 str
= kmalloc(len
, GFP_KERNEL
);
5357 scnprintf(str
, len
, "Linux NFSv%u.%u %s/%s",
5358 clp
->rpc_ops
->version
, clp
->cl_minorversion
,
5359 nfs4_client_id_uniquifier
,
5360 clp
->cl_rpcclient
->cl_nodename
);
5361 clp
->cl_owner_id
= str
;
5366 nfs4_init_uniform_client_string(struct nfs_client
*clp
)
5371 if (clp
->cl_owner_id
!= NULL
)
5374 if (nfs4_client_id_uniquifier
[0] != '\0')
5375 return nfs4_init_uniquifier_client_string(clp
);
5377 len
= 10 + 10 + 1 + 10 + 1 +
5378 strlen(clp
->cl_rpcclient
->cl_nodename
) + 1;
5380 if (len
> NFS4_OPAQUE_LIMIT
+ 1)
5384 * Since this string is allocated at mount time, and held until the
5385 * nfs_client is destroyed, we can use GFP_KERNEL here w/o worrying
5386 * about a memory-reclaim deadlock.
5388 str
= kmalloc(len
, GFP_KERNEL
);
5392 scnprintf(str
, len
, "Linux NFSv%u.%u %s",
5393 clp
->rpc_ops
->version
, clp
->cl_minorversion
,
5394 clp
->cl_rpcclient
->cl_nodename
);
5395 clp
->cl_owner_id
= str
;
5400 * nfs4_callback_up_net() starts only "tcp" and "tcp6" callback
5401 * services. Advertise one based on the address family of the
5405 nfs4_init_callback_netid(const struct nfs_client
*clp
, char *buf
, size_t len
)
5407 if (strchr(clp
->cl_ipaddr
, ':') != NULL
)
5408 return scnprintf(buf
, len
, "tcp6");
5410 return scnprintf(buf
, len
, "tcp");
5413 static void nfs4_setclientid_done(struct rpc_task
*task
, void *calldata
)
5415 struct nfs4_setclientid
*sc
= calldata
;
5417 if (task
->tk_status
== 0)
5418 sc
->sc_cred
= get_rpccred(task
->tk_rqstp
->rq_cred
);
5421 static const struct rpc_call_ops nfs4_setclientid_ops
= {
5422 .rpc_call_done
= nfs4_setclientid_done
,
5426 * nfs4_proc_setclientid - Negotiate client ID
5427 * @clp: state data structure
5428 * @program: RPC program for NFSv4 callback service
5429 * @port: IP port number for NFS4 callback service
5430 * @cred: RPC credential to use for this call
5431 * @res: where to place the result
5433 * Returns zero, a negative errno, or a negative NFS4ERR status code.
5435 int nfs4_proc_setclientid(struct nfs_client
*clp
, u32 program
,
5436 unsigned short port
, struct rpc_cred
*cred
,
5437 struct nfs4_setclientid_res
*res
)
5439 nfs4_verifier sc_verifier
;
5440 struct nfs4_setclientid setclientid
= {
5441 .sc_verifier
= &sc_verifier
,
5445 struct rpc_message msg
= {
5446 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETCLIENTID
],
5447 .rpc_argp
= &setclientid
,
5451 struct rpc_task
*task
;
5452 struct rpc_task_setup task_setup_data
= {
5453 .rpc_client
= clp
->cl_rpcclient
,
5454 .rpc_message
= &msg
,
5455 .callback_ops
= &nfs4_setclientid_ops
,
5456 .callback_data
= &setclientid
,
5457 .flags
= RPC_TASK_TIMEOUT
,
5461 /* nfs_client_id4 */
5462 nfs4_init_boot_verifier(clp
, &sc_verifier
);
5464 if (test_bit(NFS_CS_MIGRATION
, &clp
->cl_flags
))
5465 status
= nfs4_init_uniform_client_string(clp
);
5467 status
= nfs4_init_nonuniform_client_string(clp
);
5473 setclientid
.sc_netid_len
=
5474 nfs4_init_callback_netid(clp
,
5475 setclientid
.sc_netid
,
5476 sizeof(setclientid
.sc_netid
));
5477 setclientid
.sc_uaddr_len
= scnprintf(setclientid
.sc_uaddr
,
5478 sizeof(setclientid
.sc_uaddr
), "%s.%u.%u",
5479 clp
->cl_ipaddr
, port
>> 8, port
& 255);
5481 dprintk("NFS call setclientid auth=%s, '%s'\n",
5482 clp
->cl_rpcclient
->cl_auth
->au_ops
->au_name
,
5484 task
= rpc_run_task(&task_setup_data
);
5486 status
= PTR_ERR(task
);
5489 status
= task
->tk_status
;
5490 if (setclientid
.sc_cred
) {
5491 clp
->cl_acceptor
= rpcauth_stringify_acceptor(setclientid
.sc_cred
);
5492 put_rpccred(setclientid
.sc_cred
);
5496 trace_nfs4_setclientid(clp
, status
);
5497 dprintk("NFS reply setclientid: %d\n", status
);
5502 * nfs4_proc_setclientid_confirm - Confirm client ID
5503 * @clp: state data structure
5504 * @res: result of a previous SETCLIENTID
5505 * @cred: RPC credential to use for this call
5507 * Returns zero, a negative errno, or a negative NFS4ERR status code.
5509 int nfs4_proc_setclientid_confirm(struct nfs_client
*clp
,
5510 struct nfs4_setclientid_res
*arg
,
5511 struct rpc_cred
*cred
)
5513 struct rpc_message msg
= {
5514 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETCLIENTID_CONFIRM
],
5520 dprintk("NFS call setclientid_confirm auth=%s, (client ID %llx)\n",
5521 clp
->cl_rpcclient
->cl_auth
->au_ops
->au_name
,
5523 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
5524 trace_nfs4_setclientid_confirm(clp
, status
);
5525 dprintk("NFS reply setclientid_confirm: %d\n", status
);
5529 struct nfs4_delegreturndata
{
5530 struct nfs4_delegreturnargs args
;
5531 struct nfs4_delegreturnres res
;
5533 nfs4_stateid stateid
;
5534 unsigned long timestamp
;
5535 struct nfs_fattr fattr
;
5537 struct inode
*inode
;
5542 static void nfs4_delegreturn_done(struct rpc_task
*task
, void *calldata
)
5544 struct nfs4_delegreturndata
*data
= calldata
;
5546 if (!nfs4_sequence_done(task
, &data
->res
.seq_res
))
5549 trace_nfs4_delegreturn_exit(&data
->args
, &data
->res
, task
->tk_status
);
5550 switch (task
->tk_status
) {
5552 renew_lease(data
->res
.server
, data
->timestamp
);
5553 case -NFS4ERR_ADMIN_REVOKED
:
5554 case -NFS4ERR_DELEG_REVOKED
:
5555 case -NFS4ERR_EXPIRED
:
5556 nfs4_free_revoked_stateid(data
->res
.server
,
5558 task
->tk_msg
.rpc_cred
);
5559 case -NFS4ERR_BAD_STATEID
:
5560 case -NFS4ERR_OLD_STATEID
:
5561 case -NFS4ERR_STALE_STATEID
:
5562 task
->tk_status
= 0;
5564 pnfs_roc_set_barrier(data
->inode
, data
->roc_barrier
);
5567 if (nfs4_async_handle_error(task
, data
->res
.server
,
5568 NULL
, NULL
) == -EAGAIN
) {
5569 rpc_restart_call_prepare(task
);
5573 data
->rpc_status
= task
->tk_status
;
5576 static void nfs4_delegreturn_release(void *calldata
)
5578 struct nfs4_delegreturndata
*data
= calldata
;
5579 struct inode
*inode
= data
->inode
;
5583 pnfs_roc_release(inode
);
5584 nfs_iput_and_deactive(inode
);
5589 static void nfs4_delegreturn_prepare(struct rpc_task
*task
, void *data
)
5591 struct nfs4_delegreturndata
*d_data
;
5593 d_data
= (struct nfs4_delegreturndata
*)data
;
5595 if (nfs4_wait_on_layoutreturn(d_data
->inode
, task
))
5599 pnfs_roc_get_barrier(d_data
->inode
, &d_data
->roc_barrier
);
5601 nfs4_setup_sequence(d_data
->res
.server
,
5602 &d_data
->args
.seq_args
,
5603 &d_data
->res
.seq_res
,
5607 static const struct rpc_call_ops nfs4_delegreturn_ops
= {
5608 .rpc_call_prepare
= nfs4_delegreturn_prepare
,
5609 .rpc_call_done
= nfs4_delegreturn_done
,
5610 .rpc_release
= nfs4_delegreturn_release
,
5613 static int _nfs4_proc_delegreturn(struct inode
*inode
, struct rpc_cred
*cred
, const nfs4_stateid
*stateid
, int issync
)
5615 struct nfs4_delegreturndata
*data
;
5616 struct nfs_server
*server
= NFS_SERVER(inode
);
5617 struct rpc_task
*task
;
5618 struct rpc_message msg
= {
5619 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_DELEGRETURN
],
5622 struct rpc_task_setup task_setup_data
= {
5623 .rpc_client
= server
->client
,
5624 .rpc_message
= &msg
,
5625 .callback_ops
= &nfs4_delegreturn_ops
,
5626 .flags
= RPC_TASK_ASYNC
,
5630 data
= kzalloc(sizeof(*data
), GFP_NOFS
);
5633 nfs4_init_sequence(&data
->args
.seq_args
, &data
->res
.seq_res
, 1);
5635 nfs4_state_protect(server
->nfs_client
,
5636 NFS_SP4_MACH_CRED_CLEANUP
,
5637 &task_setup_data
.rpc_client
, &msg
);
5639 data
->args
.fhandle
= &data
->fh
;
5640 data
->args
.stateid
= &data
->stateid
;
5641 data
->args
.bitmask
= server
->cache_consistency_bitmask
;
5642 nfs_copy_fh(&data
->fh
, NFS_FH(inode
));
5643 nfs4_stateid_copy(&data
->stateid
, stateid
);
5644 data
->res
.fattr
= &data
->fattr
;
5645 data
->res
.server
= server
;
5646 nfs_fattr_init(data
->res
.fattr
);
5647 data
->timestamp
= jiffies
;
5648 data
->rpc_status
= 0;
5649 data
->inode
= nfs_igrab_and_active(inode
);
5651 data
->roc
= nfs4_roc(inode
);
5653 task_setup_data
.callback_data
= data
;
5654 msg
.rpc_argp
= &data
->args
;
5655 msg
.rpc_resp
= &data
->res
;
5656 task
= rpc_run_task(&task_setup_data
);
5658 return PTR_ERR(task
);
5661 status
= nfs4_wait_for_completion_rpc_task(task
);
5664 status
= data
->rpc_status
;
5666 nfs_post_op_update_inode_force_wcc(inode
, &data
->fattr
);
5668 nfs_refresh_inode(inode
, &data
->fattr
);
5674 int nfs4_proc_delegreturn(struct inode
*inode
, struct rpc_cred
*cred
, const nfs4_stateid
*stateid
, int issync
)
5676 struct nfs_server
*server
= NFS_SERVER(inode
);
5677 struct nfs4_exception exception
= { };
5680 err
= _nfs4_proc_delegreturn(inode
, cred
, stateid
, issync
);
5681 trace_nfs4_delegreturn(inode
, stateid
, err
);
5683 case -NFS4ERR_STALE_STATEID
:
5684 case -NFS4ERR_EXPIRED
:
5688 err
= nfs4_handle_exception(server
, err
, &exception
);
5689 } while (exception
.retry
);
5693 static int _nfs4_proc_getlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
5695 struct inode
*inode
= state
->inode
;
5696 struct nfs_server
*server
= NFS_SERVER(inode
);
5697 struct nfs_client
*clp
= server
->nfs_client
;
5698 struct nfs_lockt_args arg
= {
5699 .fh
= NFS_FH(inode
),
5702 struct nfs_lockt_res res
= {
5705 struct rpc_message msg
= {
5706 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOCKT
],
5709 .rpc_cred
= state
->owner
->so_cred
,
5711 struct nfs4_lock_state
*lsp
;
5714 arg
.lock_owner
.clientid
= clp
->cl_clientid
;
5715 status
= nfs4_set_lock_state(state
, request
);
5718 lsp
= request
->fl_u
.nfs4_fl
.owner
;
5719 arg
.lock_owner
.id
= lsp
->ls_seqid
.owner_id
;
5720 arg
.lock_owner
.s_dev
= server
->s_dev
;
5721 status
= nfs4_call_sync(server
->client
, server
, &msg
, &arg
.seq_args
, &res
.seq_res
, 1);
5724 request
->fl_type
= F_UNLCK
;
5726 case -NFS4ERR_DENIED
:
5729 request
->fl_ops
->fl_release_private(request
);
5730 request
->fl_ops
= NULL
;
5735 static int nfs4_proc_getlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
5737 struct nfs4_exception exception
= { };
5741 err
= _nfs4_proc_getlk(state
, cmd
, request
);
5742 trace_nfs4_get_lock(request
, state
, cmd
, err
);
5743 err
= nfs4_handle_exception(NFS_SERVER(state
->inode
), err
,
5745 } while (exception
.retry
);
5749 struct nfs4_unlockdata
{
5750 struct nfs_locku_args arg
;
5751 struct nfs_locku_res res
;
5752 struct nfs4_lock_state
*lsp
;
5753 struct nfs_open_context
*ctx
;
5754 struct file_lock fl
;
5755 struct nfs_server
*server
;
5756 unsigned long timestamp
;
5759 static struct nfs4_unlockdata
*nfs4_alloc_unlockdata(struct file_lock
*fl
,
5760 struct nfs_open_context
*ctx
,
5761 struct nfs4_lock_state
*lsp
,
5762 struct nfs_seqid
*seqid
)
5764 struct nfs4_unlockdata
*p
;
5765 struct inode
*inode
= lsp
->ls_state
->inode
;
5767 p
= kzalloc(sizeof(*p
), GFP_NOFS
);
5770 p
->arg
.fh
= NFS_FH(inode
);
5772 p
->arg
.seqid
= seqid
;
5773 p
->res
.seqid
= seqid
;
5775 atomic_inc(&lsp
->ls_count
);
5776 /* Ensure we don't close file until we're done freeing locks! */
5777 p
->ctx
= get_nfs_open_context(ctx
);
5778 memcpy(&p
->fl
, fl
, sizeof(p
->fl
));
5779 p
->server
= NFS_SERVER(inode
);
5783 static void nfs4_locku_release_calldata(void *data
)
5785 struct nfs4_unlockdata
*calldata
= data
;
5786 nfs_free_seqid(calldata
->arg
.seqid
);
5787 nfs4_put_lock_state(calldata
->lsp
);
5788 put_nfs_open_context(calldata
->ctx
);
5792 static void nfs4_locku_done(struct rpc_task
*task
, void *data
)
5794 struct nfs4_unlockdata
*calldata
= data
;
5796 if (!nfs4_sequence_done(task
, &calldata
->res
.seq_res
))
5798 switch (task
->tk_status
) {
5800 renew_lease(calldata
->server
, calldata
->timestamp
);
5801 locks_lock_inode_wait(calldata
->lsp
->ls_state
->inode
, &calldata
->fl
);
5802 if (nfs4_update_lock_stateid(calldata
->lsp
,
5803 &calldata
->res
.stateid
))
5805 case -NFS4ERR_ADMIN_REVOKED
:
5806 case -NFS4ERR_EXPIRED
:
5807 nfs4_free_revoked_stateid(calldata
->server
,
5808 &calldata
->arg
.stateid
,
5809 task
->tk_msg
.rpc_cred
);
5810 case -NFS4ERR_BAD_STATEID
:
5811 case -NFS4ERR_OLD_STATEID
:
5812 case -NFS4ERR_STALE_STATEID
:
5813 if (!nfs4_stateid_match(&calldata
->arg
.stateid
,
5814 &calldata
->lsp
->ls_stateid
))
5815 rpc_restart_call_prepare(task
);
5818 if (nfs4_async_handle_error(task
, calldata
->server
,
5819 NULL
, NULL
) == -EAGAIN
)
5820 rpc_restart_call_prepare(task
);
5822 nfs_release_seqid(calldata
->arg
.seqid
);
5825 static void nfs4_locku_prepare(struct rpc_task
*task
, void *data
)
5827 struct nfs4_unlockdata
*calldata
= data
;
5829 if (nfs_wait_on_sequence(calldata
->arg
.seqid
, task
) != 0)
5831 nfs4_stateid_copy(&calldata
->arg
.stateid
, &calldata
->lsp
->ls_stateid
);
5832 if (test_bit(NFS_LOCK_INITIALIZED
, &calldata
->lsp
->ls_flags
) == 0) {
5833 /* Note: exit _without_ running nfs4_locku_done */
5836 calldata
->timestamp
= jiffies
;
5837 if (nfs4_setup_sequence(calldata
->server
,
5838 &calldata
->arg
.seq_args
,
5839 &calldata
->res
.seq_res
,
5841 nfs_release_seqid(calldata
->arg
.seqid
);
5844 task
->tk_action
= NULL
;
5846 nfs4_sequence_done(task
, &calldata
->res
.seq_res
);
5849 static const struct rpc_call_ops nfs4_locku_ops
= {
5850 .rpc_call_prepare
= nfs4_locku_prepare
,
5851 .rpc_call_done
= nfs4_locku_done
,
5852 .rpc_release
= nfs4_locku_release_calldata
,
5855 static struct rpc_task
*nfs4_do_unlck(struct file_lock
*fl
,
5856 struct nfs_open_context
*ctx
,
5857 struct nfs4_lock_state
*lsp
,
5858 struct nfs_seqid
*seqid
)
5860 struct nfs4_unlockdata
*data
;
5861 struct rpc_message msg
= {
5862 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOCKU
],
5863 .rpc_cred
= ctx
->cred
,
5865 struct rpc_task_setup task_setup_data
= {
5866 .rpc_client
= NFS_CLIENT(lsp
->ls_state
->inode
),
5867 .rpc_message
= &msg
,
5868 .callback_ops
= &nfs4_locku_ops
,
5869 .workqueue
= nfsiod_workqueue
,
5870 .flags
= RPC_TASK_ASYNC
,
5873 nfs4_state_protect(NFS_SERVER(lsp
->ls_state
->inode
)->nfs_client
,
5874 NFS_SP4_MACH_CRED_CLEANUP
, &task_setup_data
.rpc_client
, &msg
);
5876 /* Ensure this is an unlock - when canceling a lock, the
5877 * canceled lock is passed in, and it won't be an unlock.
5879 fl
->fl_type
= F_UNLCK
;
5881 data
= nfs4_alloc_unlockdata(fl
, ctx
, lsp
, seqid
);
5883 nfs_free_seqid(seqid
);
5884 return ERR_PTR(-ENOMEM
);
5887 nfs4_init_sequence(&data
->arg
.seq_args
, &data
->res
.seq_res
, 1);
5888 msg
.rpc_argp
= &data
->arg
;
5889 msg
.rpc_resp
= &data
->res
;
5890 task_setup_data
.callback_data
= data
;
5891 return rpc_run_task(&task_setup_data
);
5894 static int nfs4_proc_unlck(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
5896 struct inode
*inode
= state
->inode
;
5897 struct nfs4_state_owner
*sp
= state
->owner
;
5898 struct nfs_inode
*nfsi
= NFS_I(inode
);
5899 struct nfs_seqid
*seqid
;
5900 struct nfs4_lock_state
*lsp
;
5901 struct rpc_task
*task
;
5902 struct nfs_seqid
*(*alloc_seqid
)(struct nfs_seqid_counter
*, gfp_t
);
5904 unsigned char fl_flags
= request
->fl_flags
;
5906 status
= nfs4_set_lock_state(state
, request
);
5907 /* Unlock _before_ we do the RPC call */
5908 request
->fl_flags
|= FL_EXISTS
;
5909 /* Exclude nfs_delegation_claim_locks() */
5910 mutex_lock(&sp
->so_delegreturn_mutex
);
5911 /* Exclude nfs4_reclaim_open_stateid() - note nesting! */
5912 down_read(&nfsi
->rwsem
);
5913 if (locks_lock_inode_wait(inode
, request
) == -ENOENT
) {
5914 up_read(&nfsi
->rwsem
);
5915 mutex_unlock(&sp
->so_delegreturn_mutex
);
5918 up_read(&nfsi
->rwsem
);
5919 mutex_unlock(&sp
->so_delegreturn_mutex
);
5922 /* Is this a delegated lock? */
5923 lsp
= request
->fl_u
.nfs4_fl
.owner
;
5924 if (test_bit(NFS_LOCK_INITIALIZED
, &lsp
->ls_flags
) == 0)
5926 alloc_seqid
= NFS_SERVER(inode
)->nfs_client
->cl_mvops
->alloc_seqid
;
5927 seqid
= alloc_seqid(&lsp
->ls_seqid
, GFP_KERNEL
);
5931 task
= nfs4_do_unlck(request
, nfs_file_open_context(request
->fl_file
), lsp
, seqid
);
5932 status
= PTR_ERR(task
);
5935 status
= nfs4_wait_for_completion_rpc_task(task
);
5938 request
->fl_flags
= fl_flags
;
5939 trace_nfs4_unlock(request
, state
, F_SETLK
, status
);
5943 struct nfs4_lockdata
{
5944 struct nfs_lock_args arg
;
5945 struct nfs_lock_res res
;
5946 struct nfs4_lock_state
*lsp
;
5947 struct nfs_open_context
*ctx
;
5948 struct file_lock fl
;
5949 unsigned long timestamp
;
5952 struct nfs_server
*server
;
5955 static struct nfs4_lockdata
*nfs4_alloc_lockdata(struct file_lock
*fl
,
5956 struct nfs_open_context
*ctx
, struct nfs4_lock_state
*lsp
,
5959 struct nfs4_lockdata
*p
;
5960 struct inode
*inode
= lsp
->ls_state
->inode
;
5961 struct nfs_server
*server
= NFS_SERVER(inode
);
5962 struct nfs_seqid
*(*alloc_seqid
)(struct nfs_seqid_counter
*, gfp_t
);
5964 p
= kzalloc(sizeof(*p
), gfp_mask
);
5968 p
->arg
.fh
= NFS_FH(inode
);
5970 p
->arg
.open_seqid
= nfs_alloc_seqid(&lsp
->ls_state
->owner
->so_seqid
, gfp_mask
);
5971 if (IS_ERR(p
->arg
.open_seqid
))
5973 alloc_seqid
= server
->nfs_client
->cl_mvops
->alloc_seqid
;
5974 p
->arg
.lock_seqid
= alloc_seqid(&lsp
->ls_seqid
, gfp_mask
);
5975 if (IS_ERR(p
->arg
.lock_seqid
))
5976 goto out_free_seqid
;
5977 p
->arg
.lock_owner
.clientid
= server
->nfs_client
->cl_clientid
;
5978 p
->arg
.lock_owner
.id
= lsp
->ls_seqid
.owner_id
;
5979 p
->arg
.lock_owner
.s_dev
= server
->s_dev
;
5980 p
->res
.lock_seqid
= p
->arg
.lock_seqid
;
5983 atomic_inc(&lsp
->ls_count
);
5984 p
->ctx
= get_nfs_open_context(ctx
);
5985 get_file(fl
->fl_file
);
5986 memcpy(&p
->fl
, fl
, sizeof(p
->fl
));
5989 nfs_free_seqid(p
->arg
.open_seqid
);
5995 static void nfs4_lock_prepare(struct rpc_task
*task
, void *calldata
)
5997 struct nfs4_lockdata
*data
= calldata
;
5998 struct nfs4_state
*state
= data
->lsp
->ls_state
;
6000 dprintk("%s: begin!\n", __func__
);
6001 if (nfs_wait_on_sequence(data
->arg
.lock_seqid
, task
) != 0)
6003 /* Do we need to do an open_to_lock_owner? */
6004 if (!test_bit(NFS_LOCK_INITIALIZED
, &data
->lsp
->ls_flags
)) {
6005 if (nfs_wait_on_sequence(data
->arg
.open_seqid
, task
) != 0) {
6006 goto out_release_lock_seqid
;
6008 nfs4_stateid_copy(&data
->arg
.open_stateid
,
6009 &state
->open_stateid
);
6010 data
->arg
.new_lock_owner
= 1;
6011 data
->res
.open_seqid
= data
->arg
.open_seqid
;
6013 data
->arg
.new_lock_owner
= 0;
6014 nfs4_stateid_copy(&data
->arg
.lock_stateid
,
6015 &data
->lsp
->ls_stateid
);
6017 if (!nfs4_valid_open_stateid(state
)) {
6018 data
->rpc_status
= -EBADF
;
6019 task
->tk_action
= NULL
;
6020 goto out_release_open_seqid
;
6022 data
->timestamp
= jiffies
;
6023 if (nfs4_setup_sequence(data
->server
,
6024 &data
->arg
.seq_args
,
6028 out_release_open_seqid
:
6029 nfs_release_seqid(data
->arg
.open_seqid
);
6030 out_release_lock_seqid
:
6031 nfs_release_seqid(data
->arg
.lock_seqid
);
6033 nfs4_sequence_done(task
, &data
->res
.seq_res
);
6034 dprintk("%s: done!, ret = %d\n", __func__
, data
->rpc_status
);
6037 static void nfs4_lock_done(struct rpc_task
*task
, void *calldata
)
6039 struct nfs4_lockdata
*data
= calldata
;
6040 struct nfs4_lock_state
*lsp
= data
->lsp
;
6042 dprintk("%s: begin!\n", __func__
);
6044 if (!nfs4_sequence_done(task
, &data
->res
.seq_res
))
6047 data
->rpc_status
= task
->tk_status
;
6048 switch (task
->tk_status
) {
6050 renew_lease(NFS_SERVER(d_inode(data
->ctx
->dentry
)),
6052 if (data
->arg
.new_lock
) {
6053 data
->fl
.fl_flags
&= ~(FL_SLEEP
| FL_ACCESS
);
6054 if (locks_lock_inode_wait(lsp
->ls_state
->inode
, &data
->fl
) < 0) {
6055 rpc_restart_call_prepare(task
);
6059 if (data
->arg
.new_lock_owner
!= 0) {
6060 nfs_confirm_seqid(&lsp
->ls_seqid
, 0);
6061 nfs4_stateid_copy(&lsp
->ls_stateid
, &data
->res
.stateid
);
6062 set_bit(NFS_LOCK_INITIALIZED
, &lsp
->ls_flags
);
6063 } else if (!nfs4_update_lock_stateid(lsp
, &data
->res
.stateid
))
6064 rpc_restart_call_prepare(task
);
6066 case -NFS4ERR_BAD_STATEID
:
6067 case -NFS4ERR_OLD_STATEID
:
6068 case -NFS4ERR_STALE_STATEID
:
6069 case -NFS4ERR_EXPIRED
:
6070 if (data
->arg
.new_lock_owner
!= 0) {
6071 if (!nfs4_stateid_match(&data
->arg
.open_stateid
,
6072 &lsp
->ls_state
->open_stateid
))
6073 rpc_restart_call_prepare(task
);
6074 } else if (!nfs4_stateid_match(&data
->arg
.lock_stateid
,
6076 rpc_restart_call_prepare(task
);
6078 dprintk("%s: done, ret = %d!\n", __func__
, data
->rpc_status
);
6081 static void nfs4_lock_release(void *calldata
)
6083 struct nfs4_lockdata
*data
= calldata
;
6085 dprintk("%s: begin!\n", __func__
);
6086 nfs_free_seqid(data
->arg
.open_seqid
);
6087 if (data
->cancelled
!= 0) {
6088 struct rpc_task
*task
;
6089 task
= nfs4_do_unlck(&data
->fl
, data
->ctx
, data
->lsp
,
6090 data
->arg
.lock_seqid
);
6092 rpc_put_task_async(task
);
6093 dprintk("%s: cancelling lock!\n", __func__
);
6095 nfs_free_seqid(data
->arg
.lock_seqid
);
6096 nfs4_put_lock_state(data
->lsp
);
6097 put_nfs_open_context(data
->ctx
);
6098 fput(data
->fl
.fl_file
);
6100 dprintk("%s: done!\n", __func__
);
6103 static const struct rpc_call_ops nfs4_lock_ops
= {
6104 .rpc_call_prepare
= nfs4_lock_prepare
,
6105 .rpc_call_done
= nfs4_lock_done
,
6106 .rpc_release
= nfs4_lock_release
,
6109 static void nfs4_handle_setlk_error(struct nfs_server
*server
, struct nfs4_lock_state
*lsp
, int new_lock_owner
, int error
)
6112 case -NFS4ERR_ADMIN_REVOKED
:
6113 case -NFS4ERR_EXPIRED
:
6114 case -NFS4ERR_BAD_STATEID
:
6115 lsp
->ls_seqid
.flags
&= ~NFS_SEQID_CONFIRMED
;
6116 if (new_lock_owner
!= 0 ||
6117 test_bit(NFS_LOCK_INITIALIZED
, &lsp
->ls_flags
) != 0)
6118 nfs4_schedule_stateid_recovery(server
, lsp
->ls_state
);
6120 case -NFS4ERR_STALE_STATEID
:
6121 lsp
->ls_seqid
.flags
&= ~NFS_SEQID_CONFIRMED
;
6122 nfs4_schedule_lease_recovery(server
->nfs_client
);
6126 static int _nfs4_do_setlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*fl
, int recovery_type
)
6128 struct nfs4_lockdata
*data
;
6129 struct rpc_task
*task
;
6130 struct rpc_message msg
= {
6131 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOCK
],
6132 .rpc_cred
= state
->owner
->so_cred
,
6134 struct rpc_task_setup task_setup_data
= {
6135 .rpc_client
= NFS_CLIENT(state
->inode
),
6136 .rpc_message
= &msg
,
6137 .callback_ops
= &nfs4_lock_ops
,
6138 .workqueue
= nfsiod_workqueue
,
6139 .flags
= RPC_TASK_ASYNC
,
6143 dprintk("%s: begin!\n", __func__
);
6144 data
= nfs4_alloc_lockdata(fl
, nfs_file_open_context(fl
->fl_file
),
6145 fl
->fl_u
.nfs4_fl
.owner
,
6146 recovery_type
== NFS_LOCK_NEW
? GFP_KERNEL
: GFP_NOFS
);
6150 data
->arg
.block
= 1;
6151 nfs4_init_sequence(&data
->arg
.seq_args
, &data
->res
.seq_res
, 1);
6152 msg
.rpc_argp
= &data
->arg
;
6153 msg
.rpc_resp
= &data
->res
;
6154 task_setup_data
.callback_data
= data
;
6155 if (recovery_type
> NFS_LOCK_NEW
) {
6156 if (recovery_type
== NFS_LOCK_RECLAIM
)
6157 data
->arg
.reclaim
= NFS_LOCK_RECLAIM
;
6158 nfs4_set_sequence_privileged(&data
->arg
.seq_args
);
6160 data
->arg
.new_lock
= 1;
6161 task
= rpc_run_task(&task_setup_data
);
6163 return PTR_ERR(task
);
6164 ret
= nfs4_wait_for_completion_rpc_task(task
);
6166 ret
= data
->rpc_status
;
6168 nfs4_handle_setlk_error(data
->server
, data
->lsp
,
6169 data
->arg
.new_lock_owner
, ret
);
6171 data
->cancelled
= 1;
6173 dprintk("%s: done, ret = %d!\n", __func__
, ret
);
6174 trace_nfs4_set_lock(fl
, state
, &data
->res
.stateid
, cmd
, ret
);
6178 static int nfs4_lock_reclaim(struct nfs4_state
*state
, struct file_lock
*request
)
6180 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
6181 struct nfs4_exception exception
= {
6182 .inode
= state
->inode
,
6187 /* Cache the lock if possible... */
6188 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) != 0)
6190 err
= _nfs4_do_setlk(state
, F_SETLK
, request
, NFS_LOCK_RECLAIM
);
6191 if (err
!= -NFS4ERR_DELAY
)
6193 nfs4_handle_exception(server
, err
, &exception
);
6194 } while (exception
.retry
);
6198 static int nfs4_lock_expired(struct nfs4_state
*state
, struct file_lock
*request
)
6200 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
6201 struct nfs4_exception exception
= {
6202 .inode
= state
->inode
,
6206 err
= nfs4_set_lock_state(state
, request
);
6209 if (!recover_lost_locks
) {
6210 set_bit(NFS_LOCK_LOST
, &request
->fl_u
.nfs4_fl
.owner
->ls_flags
);
6214 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) != 0)
6216 err
= _nfs4_do_setlk(state
, F_SETLK
, request
, NFS_LOCK_EXPIRED
);
6220 case -NFS4ERR_GRACE
:
6221 case -NFS4ERR_DELAY
:
6222 nfs4_handle_exception(server
, err
, &exception
);
6225 } while (exception
.retry
);
6230 #if defined(CONFIG_NFS_V4_1)
6231 static int nfs41_lock_expired(struct nfs4_state
*state
, struct file_lock
*request
)
6233 struct nfs4_lock_state
*lsp
;
6236 status
= nfs4_set_lock_state(state
, request
);
6239 lsp
= request
->fl_u
.nfs4_fl
.owner
;
6240 if (test_bit(NFS_LOCK_INITIALIZED
, &lsp
->ls_flags
) ||
6241 test_bit(NFS_LOCK_LOST
, &lsp
->ls_flags
))
6243 status
= nfs4_lock_expired(state
, request
);
6248 static int _nfs4_proc_setlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
6250 struct nfs_inode
*nfsi
= NFS_I(state
->inode
);
6251 struct nfs4_state_owner
*sp
= state
->owner
;
6252 unsigned char fl_flags
= request
->fl_flags
;
6255 request
->fl_flags
|= FL_ACCESS
;
6256 status
= locks_lock_inode_wait(state
->inode
, request
);
6259 mutex_lock(&sp
->so_delegreturn_mutex
);
6260 down_read(&nfsi
->rwsem
);
6261 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
)) {
6262 /* Yes: cache locks! */
6263 /* ...but avoid races with delegation recall... */
6264 request
->fl_flags
= fl_flags
& ~FL_SLEEP
;
6265 status
= locks_lock_inode_wait(state
->inode
, request
);
6266 up_read(&nfsi
->rwsem
);
6267 mutex_unlock(&sp
->so_delegreturn_mutex
);
6270 up_read(&nfsi
->rwsem
);
6271 mutex_unlock(&sp
->so_delegreturn_mutex
);
6272 status
= _nfs4_do_setlk(state
, cmd
, request
, NFS_LOCK_NEW
);
6274 request
->fl_flags
= fl_flags
;
6278 static int nfs4_proc_setlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
6280 struct nfs4_exception exception
= {
6282 .inode
= state
->inode
,
6287 err
= _nfs4_proc_setlk(state
, cmd
, request
);
6288 if (err
== -NFS4ERR_DENIED
)
6290 err
= nfs4_handle_exception(NFS_SERVER(state
->inode
),
6292 } while (exception
.retry
);
6296 #define NFS4_LOCK_MINTIMEOUT (1 * HZ)
6297 #define NFS4_LOCK_MAXTIMEOUT (30 * HZ)
6300 nfs4_retry_setlk_simple(struct nfs4_state
*state
, int cmd
,
6301 struct file_lock
*request
)
6303 int status
= -ERESTARTSYS
;
6304 unsigned long timeout
= NFS4_LOCK_MINTIMEOUT
;
6306 while(!signalled()) {
6307 status
= nfs4_proc_setlk(state
, cmd
, request
);
6308 if ((status
!= -EAGAIN
) || IS_SETLK(cmd
))
6310 freezable_schedule_timeout_interruptible(timeout
);
6312 timeout
= min_t(unsigned long, NFS4_LOCK_MAXTIMEOUT
, timeout
);
6313 status
= -ERESTARTSYS
;
6318 #ifdef CONFIG_NFS_V4_1
6319 struct nfs4_lock_waiter
{
6320 struct task_struct
*task
;
6321 struct inode
*inode
;
6322 struct nfs_lowner
*owner
;
6327 nfs4_wake_lock_waiter(wait_queue_t
*wait
, unsigned int mode
, int flags
, void *key
)
6330 struct cb_notify_lock_args
*cbnl
= key
;
6331 struct nfs4_lock_waiter
*waiter
= wait
->private;
6332 struct nfs_lowner
*lowner
= &cbnl
->cbnl_owner
,
6333 *wowner
= waiter
->owner
;
6335 /* Only wake if the callback was for the same owner */
6336 if (lowner
->clientid
!= wowner
->clientid
||
6337 lowner
->id
!= wowner
->id
||
6338 lowner
->s_dev
!= wowner
->s_dev
)
6341 /* Make sure it's for the right inode */
6342 if (nfs_compare_fh(NFS_FH(waiter
->inode
), &cbnl
->cbnl_fh
))
6345 waiter
->notified
= true;
6347 /* override "private" so we can use default_wake_function */
6348 wait
->private = waiter
->task
;
6349 ret
= autoremove_wake_function(wait
, mode
, flags
, key
);
6350 wait
->private = waiter
;
6355 nfs4_retry_setlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
6357 int status
= -ERESTARTSYS
;
6358 unsigned long flags
;
6359 struct nfs4_lock_state
*lsp
= request
->fl_u
.nfs4_fl
.owner
;
6360 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
6361 struct nfs_client
*clp
= server
->nfs_client
;
6362 wait_queue_head_t
*q
= &clp
->cl_lock_waitq
;
6363 struct nfs_lowner owner
= { .clientid
= clp
->cl_clientid
,
6364 .id
= lsp
->ls_seqid
.owner_id
,
6365 .s_dev
= server
->s_dev
};
6366 struct nfs4_lock_waiter waiter
= { .task
= current
,
6367 .inode
= state
->inode
,
6369 .notified
= false };
6372 /* Don't bother with waitqueue if we don't expect a callback */
6373 if (!test_bit(NFS_STATE_MAY_NOTIFY_LOCK
, &state
->flags
))
6374 return nfs4_retry_setlk_simple(state
, cmd
, request
);
6377 wait
.private = &waiter
;
6378 wait
.func
= nfs4_wake_lock_waiter
;
6379 add_wait_queue(q
, &wait
);
6381 while(!signalled()) {
6382 status
= nfs4_proc_setlk(state
, cmd
, request
);
6383 if ((status
!= -EAGAIN
) || IS_SETLK(cmd
))
6386 status
= -ERESTARTSYS
;
6387 spin_lock_irqsave(&q
->lock
, flags
);
6388 if (waiter
.notified
) {
6389 spin_unlock_irqrestore(&q
->lock
, flags
);
6392 set_current_state(TASK_INTERRUPTIBLE
);
6393 spin_unlock_irqrestore(&q
->lock
, flags
);
6395 freezable_schedule_timeout_interruptible(NFS4_LOCK_MAXTIMEOUT
);
6398 finish_wait(q
, &wait
);
6401 #else /* !CONFIG_NFS_V4_1 */
6403 nfs4_retry_setlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
6405 return nfs4_retry_setlk_simple(state
, cmd
, request
);
6410 nfs4_proc_lock(struct file
*filp
, int cmd
, struct file_lock
*request
)
6412 struct nfs_open_context
*ctx
;
6413 struct nfs4_state
*state
;
6416 /* verify open state */
6417 ctx
= nfs_file_open_context(filp
);
6420 if (request
->fl_start
< 0 || request
->fl_end
< 0)
6423 if (IS_GETLK(cmd
)) {
6425 return nfs4_proc_getlk(state
, F_GETLK
, request
);
6429 if (!(IS_SETLK(cmd
) || IS_SETLKW(cmd
)))
6432 if (request
->fl_type
== F_UNLCK
) {
6434 return nfs4_proc_unlck(state
, cmd
, request
);
6441 if ((request
->fl_flags
& FL_POSIX
) &&
6442 !test_bit(NFS_STATE_POSIX_LOCKS
, &state
->flags
))
6446 * Don't rely on the VFS having checked the file open mode,
6447 * since it won't do this for flock() locks.
6449 switch (request
->fl_type
) {
6451 if (!(filp
->f_mode
& FMODE_READ
))
6455 if (!(filp
->f_mode
& FMODE_WRITE
))
6459 status
= nfs4_set_lock_state(state
, request
);
6463 return nfs4_retry_setlk(state
, cmd
, request
);
6466 int nfs4_lock_delegation_recall(struct file_lock
*fl
, struct nfs4_state
*state
, const nfs4_stateid
*stateid
)
6468 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
6471 err
= nfs4_set_lock_state(state
, fl
);
6474 err
= _nfs4_do_setlk(state
, F_SETLK
, fl
, NFS_LOCK_NEW
);
6475 return nfs4_handle_delegation_recall_error(server
, state
, stateid
, err
);
6478 struct nfs_release_lockowner_data
{
6479 struct nfs4_lock_state
*lsp
;
6480 struct nfs_server
*server
;
6481 struct nfs_release_lockowner_args args
;
6482 struct nfs_release_lockowner_res res
;
6483 unsigned long timestamp
;
6486 static void nfs4_release_lockowner_prepare(struct rpc_task
*task
, void *calldata
)
6488 struct nfs_release_lockowner_data
*data
= calldata
;
6489 struct nfs_server
*server
= data
->server
;
6490 nfs40_setup_sequence(server
->nfs_client
->cl_slot_tbl
,
6491 &data
->args
.seq_args
, &data
->res
.seq_res
, task
);
6492 data
->args
.lock_owner
.clientid
= server
->nfs_client
->cl_clientid
;
6493 data
->timestamp
= jiffies
;
6496 static void nfs4_release_lockowner_done(struct rpc_task
*task
, void *calldata
)
6498 struct nfs_release_lockowner_data
*data
= calldata
;
6499 struct nfs_server
*server
= data
->server
;
6501 nfs40_sequence_done(task
, &data
->res
.seq_res
);
6503 switch (task
->tk_status
) {
6505 renew_lease(server
, data
->timestamp
);
6507 case -NFS4ERR_STALE_CLIENTID
:
6508 case -NFS4ERR_EXPIRED
:
6509 nfs4_schedule_lease_recovery(server
->nfs_client
);
6511 case -NFS4ERR_LEASE_MOVED
:
6512 case -NFS4ERR_DELAY
:
6513 if (nfs4_async_handle_error(task
, server
,
6514 NULL
, NULL
) == -EAGAIN
)
6515 rpc_restart_call_prepare(task
);
6519 static void nfs4_release_lockowner_release(void *calldata
)
6521 struct nfs_release_lockowner_data
*data
= calldata
;
6522 nfs4_free_lock_state(data
->server
, data
->lsp
);
6526 static const struct rpc_call_ops nfs4_release_lockowner_ops
= {
6527 .rpc_call_prepare
= nfs4_release_lockowner_prepare
,
6528 .rpc_call_done
= nfs4_release_lockowner_done
,
6529 .rpc_release
= nfs4_release_lockowner_release
,
6533 nfs4_release_lockowner(struct nfs_server
*server
, struct nfs4_lock_state
*lsp
)
6535 struct nfs_release_lockowner_data
*data
;
6536 struct rpc_message msg
= {
6537 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RELEASE_LOCKOWNER
],
6540 if (server
->nfs_client
->cl_mvops
->minor_version
!= 0)
6543 data
= kmalloc(sizeof(*data
), GFP_NOFS
);
6547 data
->server
= server
;
6548 data
->args
.lock_owner
.clientid
= server
->nfs_client
->cl_clientid
;
6549 data
->args
.lock_owner
.id
= lsp
->ls_seqid
.owner_id
;
6550 data
->args
.lock_owner
.s_dev
= server
->s_dev
;
6552 msg
.rpc_argp
= &data
->args
;
6553 msg
.rpc_resp
= &data
->res
;
6554 nfs4_init_sequence(&data
->args
.seq_args
, &data
->res
.seq_res
, 0);
6555 rpc_call_async(server
->client
, &msg
, 0, &nfs4_release_lockowner_ops
, data
);
6558 #define XATTR_NAME_NFSV4_ACL "system.nfs4_acl"
6560 static int nfs4_xattr_set_nfs4_acl(const struct xattr_handler
*handler
,
6561 struct dentry
*unused
, struct inode
*inode
,
6562 const char *key
, const void *buf
,
6563 size_t buflen
, int flags
)
6565 return nfs4_proc_set_acl(inode
, buf
, buflen
);
6568 static int nfs4_xattr_get_nfs4_acl(const struct xattr_handler
*handler
,
6569 struct dentry
*unused
, struct inode
*inode
,
6570 const char *key
, void *buf
, size_t buflen
)
6572 return nfs4_proc_get_acl(inode
, buf
, buflen
);
6575 static bool nfs4_xattr_list_nfs4_acl(struct dentry
*dentry
)
6577 return nfs4_server_supports_acls(NFS_SERVER(d_inode(dentry
)));
6580 #ifdef CONFIG_NFS_V4_SECURITY_LABEL
6582 static int nfs4_xattr_set_nfs4_label(const struct xattr_handler
*handler
,
6583 struct dentry
*unused
, struct inode
*inode
,
6584 const char *key
, const void *buf
,
6585 size_t buflen
, int flags
)
6587 if (security_ismaclabel(key
))
6588 return nfs4_set_security_label(inode
, buf
, buflen
);
6593 static int nfs4_xattr_get_nfs4_label(const struct xattr_handler
*handler
,
6594 struct dentry
*unused
, struct inode
*inode
,
6595 const char *key
, void *buf
, size_t buflen
)
6597 if (security_ismaclabel(key
))
6598 return nfs4_get_security_label(inode
, buf
, buflen
);
6603 nfs4_listxattr_nfs4_label(struct inode
*inode
, char *list
, size_t list_len
)
6607 if (nfs_server_capable(inode
, NFS_CAP_SECURITY_LABEL
)) {
6608 len
= security_inode_listsecurity(inode
, list
, list_len
);
6609 if (list_len
&& len
> list_len
)
6615 static const struct xattr_handler nfs4_xattr_nfs4_label_handler
= {
6616 .prefix
= XATTR_SECURITY_PREFIX
,
6617 .get
= nfs4_xattr_get_nfs4_label
,
6618 .set
= nfs4_xattr_set_nfs4_label
,
6624 nfs4_listxattr_nfs4_label(struct inode
*inode
, char *list
, size_t list_len
)
6632 * nfs_fhget will use either the mounted_on_fileid or the fileid
6634 static void nfs_fixup_referral_attributes(struct nfs_fattr
*fattr
)
6636 if (!(((fattr
->valid
& NFS_ATTR_FATTR_MOUNTED_ON_FILEID
) ||
6637 (fattr
->valid
& NFS_ATTR_FATTR_FILEID
)) &&
6638 (fattr
->valid
& NFS_ATTR_FATTR_FSID
) &&
6639 (fattr
->valid
& NFS_ATTR_FATTR_V4_LOCATIONS
)))
6642 fattr
->valid
|= NFS_ATTR_FATTR_TYPE
| NFS_ATTR_FATTR_MODE
|
6643 NFS_ATTR_FATTR_NLINK
| NFS_ATTR_FATTR_V4_REFERRAL
;
6644 fattr
->mode
= S_IFDIR
| S_IRUGO
| S_IXUGO
;
6648 static int _nfs4_proc_fs_locations(struct rpc_clnt
*client
, struct inode
*dir
,
6649 const struct qstr
*name
,
6650 struct nfs4_fs_locations
*fs_locations
,
6653 struct nfs_server
*server
= NFS_SERVER(dir
);
6655 [0] = FATTR4_WORD0_FSID
| FATTR4_WORD0_FS_LOCATIONS
,
6657 struct nfs4_fs_locations_arg args
= {
6658 .dir_fh
= NFS_FH(dir
),
6663 struct nfs4_fs_locations_res res
= {
6664 .fs_locations
= fs_locations
,
6666 struct rpc_message msg
= {
6667 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_FS_LOCATIONS
],
6673 dprintk("%s: start\n", __func__
);
6675 /* Ask for the fileid of the absent filesystem if mounted_on_fileid
6676 * is not supported */
6677 if (NFS_SERVER(dir
)->attr_bitmask
[1] & FATTR4_WORD1_MOUNTED_ON_FILEID
)
6678 bitmask
[1] |= FATTR4_WORD1_MOUNTED_ON_FILEID
;
6680 bitmask
[0] |= FATTR4_WORD0_FILEID
;
6682 nfs_fattr_init(&fs_locations
->fattr
);
6683 fs_locations
->server
= server
;
6684 fs_locations
->nlocations
= 0;
6685 status
= nfs4_call_sync(client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
6686 dprintk("%s: returned status = %d\n", __func__
, status
);
6690 int nfs4_proc_fs_locations(struct rpc_clnt
*client
, struct inode
*dir
,
6691 const struct qstr
*name
,
6692 struct nfs4_fs_locations
*fs_locations
,
6695 struct nfs4_exception exception
= { };
6698 err
= _nfs4_proc_fs_locations(client
, dir
, name
,
6699 fs_locations
, page
);
6700 trace_nfs4_get_fs_locations(dir
, name
, err
);
6701 err
= nfs4_handle_exception(NFS_SERVER(dir
), err
,
6703 } while (exception
.retry
);
6708 * This operation also signals the server that this client is
6709 * performing migration recovery. The server can stop returning
6710 * NFS4ERR_LEASE_MOVED to this client. A RENEW operation is
6711 * appended to this compound to identify the client ID which is
6712 * performing recovery.
6714 static int _nfs40_proc_get_locations(struct inode
*inode
,
6715 struct nfs4_fs_locations
*locations
,
6716 struct page
*page
, struct rpc_cred
*cred
)
6718 struct nfs_server
*server
= NFS_SERVER(inode
);
6719 struct rpc_clnt
*clnt
= server
->client
;
6721 [0] = FATTR4_WORD0_FSID
| FATTR4_WORD0_FS_LOCATIONS
,
6723 struct nfs4_fs_locations_arg args
= {
6724 .clientid
= server
->nfs_client
->cl_clientid
,
6725 .fh
= NFS_FH(inode
),
6728 .migration
= 1, /* skip LOOKUP */
6729 .renew
= 1, /* append RENEW */
6731 struct nfs4_fs_locations_res res
= {
6732 .fs_locations
= locations
,
6736 struct rpc_message msg
= {
6737 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_FS_LOCATIONS
],
6742 unsigned long now
= jiffies
;
6745 nfs_fattr_init(&locations
->fattr
);
6746 locations
->server
= server
;
6747 locations
->nlocations
= 0;
6749 nfs4_init_sequence(&args
.seq_args
, &res
.seq_res
, 0);
6750 nfs4_set_sequence_privileged(&args
.seq_args
);
6751 status
= nfs4_call_sync_sequence(clnt
, server
, &msg
,
6752 &args
.seq_args
, &res
.seq_res
);
6756 renew_lease(server
, now
);
6760 #ifdef CONFIG_NFS_V4_1
6763 * This operation also signals the server that this client is
6764 * performing migration recovery. The server can stop asserting
6765 * SEQ4_STATUS_LEASE_MOVED for this client. The client ID
6766 * performing this operation is identified in the SEQUENCE
6767 * operation in this compound.
6769 * When the client supports GETATTR(fs_locations_info), it can
6770 * be plumbed in here.
6772 static int _nfs41_proc_get_locations(struct inode
*inode
,
6773 struct nfs4_fs_locations
*locations
,
6774 struct page
*page
, struct rpc_cred
*cred
)
6776 struct nfs_server
*server
= NFS_SERVER(inode
);
6777 struct rpc_clnt
*clnt
= server
->client
;
6779 [0] = FATTR4_WORD0_FSID
| FATTR4_WORD0_FS_LOCATIONS
,
6781 struct nfs4_fs_locations_arg args
= {
6782 .fh
= NFS_FH(inode
),
6785 .migration
= 1, /* skip LOOKUP */
6787 struct nfs4_fs_locations_res res
= {
6788 .fs_locations
= locations
,
6791 struct rpc_message msg
= {
6792 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_FS_LOCATIONS
],
6799 nfs_fattr_init(&locations
->fattr
);
6800 locations
->server
= server
;
6801 locations
->nlocations
= 0;
6803 nfs4_init_sequence(&args
.seq_args
, &res
.seq_res
, 0);
6804 nfs4_set_sequence_privileged(&args
.seq_args
);
6805 status
= nfs4_call_sync_sequence(clnt
, server
, &msg
,
6806 &args
.seq_args
, &res
.seq_res
);
6807 if (status
== NFS4_OK
&&
6808 res
.seq_res
.sr_status_flags
& SEQ4_STATUS_LEASE_MOVED
)
6809 status
= -NFS4ERR_LEASE_MOVED
;
6813 #endif /* CONFIG_NFS_V4_1 */
6816 * nfs4_proc_get_locations - discover locations for a migrated FSID
6817 * @inode: inode on FSID that is migrating
6818 * @locations: result of query
6820 * @cred: credential to use for this operation
6822 * Returns NFS4_OK on success, a negative NFS4ERR status code if the
6823 * operation failed, or a negative errno if a local error occurred.
6825 * On success, "locations" is filled in, but if the server has
6826 * no locations information, NFS_ATTR_FATTR_V4_LOCATIONS is not
6829 * -NFS4ERR_LEASE_MOVED is returned if the server still has leases
6830 * from this client that require migration recovery.
6832 int nfs4_proc_get_locations(struct inode
*inode
,
6833 struct nfs4_fs_locations
*locations
,
6834 struct page
*page
, struct rpc_cred
*cred
)
6836 struct nfs_server
*server
= NFS_SERVER(inode
);
6837 struct nfs_client
*clp
= server
->nfs_client
;
6838 const struct nfs4_mig_recovery_ops
*ops
=
6839 clp
->cl_mvops
->mig_recovery_ops
;
6840 struct nfs4_exception exception
= { };
6843 dprintk("%s: FSID %llx:%llx on \"%s\"\n", __func__
,
6844 (unsigned long long)server
->fsid
.major
,
6845 (unsigned long long)server
->fsid
.minor
,
6847 nfs_display_fhandle(NFS_FH(inode
), __func__
);
6850 status
= ops
->get_locations(inode
, locations
, page
, cred
);
6851 if (status
!= -NFS4ERR_DELAY
)
6853 nfs4_handle_exception(server
, status
, &exception
);
6854 } while (exception
.retry
);
6859 * This operation also signals the server that this client is
6860 * performing "lease moved" recovery. The server can stop
6861 * returning NFS4ERR_LEASE_MOVED to this client. A RENEW operation
6862 * is appended to this compound to identify the client ID which is
6863 * performing recovery.
6865 static int _nfs40_proc_fsid_present(struct inode
*inode
, struct rpc_cred
*cred
)
6867 struct nfs_server
*server
= NFS_SERVER(inode
);
6868 struct nfs_client
*clp
= NFS_SERVER(inode
)->nfs_client
;
6869 struct rpc_clnt
*clnt
= server
->client
;
6870 struct nfs4_fsid_present_arg args
= {
6871 .fh
= NFS_FH(inode
),
6872 .clientid
= clp
->cl_clientid
,
6873 .renew
= 1, /* append RENEW */
6875 struct nfs4_fsid_present_res res
= {
6878 struct rpc_message msg
= {
6879 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_FSID_PRESENT
],
6884 unsigned long now
= jiffies
;
6887 res
.fh
= nfs_alloc_fhandle();
6891 nfs4_init_sequence(&args
.seq_args
, &res
.seq_res
, 0);
6892 nfs4_set_sequence_privileged(&args
.seq_args
);
6893 status
= nfs4_call_sync_sequence(clnt
, server
, &msg
,
6894 &args
.seq_args
, &res
.seq_res
);
6895 nfs_free_fhandle(res
.fh
);
6899 do_renew_lease(clp
, now
);
6903 #ifdef CONFIG_NFS_V4_1
6906 * This operation also signals the server that this client is
6907 * performing "lease moved" recovery. The server can stop asserting
6908 * SEQ4_STATUS_LEASE_MOVED for this client. The client ID performing
6909 * this operation is identified in the SEQUENCE operation in this
6912 static int _nfs41_proc_fsid_present(struct inode
*inode
, struct rpc_cred
*cred
)
6914 struct nfs_server
*server
= NFS_SERVER(inode
);
6915 struct rpc_clnt
*clnt
= server
->client
;
6916 struct nfs4_fsid_present_arg args
= {
6917 .fh
= NFS_FH(inode
),
6919 struct nfs4_fsid_present_res res
= {
6921 struct rpc_message msg
= {
6922 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_FSID_PRESENT
],
6929 res
.fh
= nfs_alloc_fhandle();
6933 nfs4_init_sequence(&args
.seq_args
, &res
.seq_res
, 0);
6934 nfs4_set_sequence_privileged(&args
.seq_args
);
6935 status
= nfs4_call_sync_sequence(clnt
, server
, &msg
,
6936 &args
.seq_args
, &res
.seq_res
);
6937 nfs_free_fhandle(res
.fh
);
6938 if (status
== NFS4_OK
&&
6939 res
.seq_res
.sr_status_flags
& SEQ4_STATUS_LEASE_MOVED
)
6940 status
= -NFS4ERR_LEASE_MOVED
;
6944 #endif /* CONFIG_NFS_V4_1 */
6947 * nfs4_proc_fsid_present - Is this FSID present or absent on server?
6948 * @inode: inode on FSID to check
6949 * @cred: credential to use for this operation
6951 * Server indicates whether the FSID is present, moved, or not
6952 * recognized. This operation is necessary to clear a LEASE_MOVED
6953 * condition for this client ID.
6955 * Returns NFS4_OK if the FSID is present on this server,
6956 * -NFS4ERR_MOVED if the FSID is no longer present, a negative
6957 * NFS4ERR code if some error occurred on the server, or a
6958 * negative errno if a local failure occurred.
6960 int nfs4_proc_fsid_present(struct inode
*inode
, struct rpc_cred
*cred
)
6962 struct nfs_server
*server
= NFS_SERVER(inode
);
6963 struct nfs_client
*clp
= server
->nfs_client
;
6964 const struct nfs4_mig_recovery_ops
*ops
=
6965 clp
->cl_mvops
->mig_recovery_ops
;
6966 struct nfs4_exception exception
= { };
6969 dprintk("%s: FSID %llx:%llx on \"%s\"\n", __func__
,
6970 (unsigned long long)server
->fsid
.major
,
6971 (unsigned long long)server
->fsid
.minor
,
6973 nfs_display_fhandle(NFS_FH(inode
), __func__
);
6976 status
= ops
->fsid_present(inode
, cred
);
6977 if (status
!= -NFS4ERR_DELAY
)
6979 nfs4_handle_exception(server
, status
, &exception
);
6980 } while (exception
.retry
);
6985 * If 'use_integrity' is true and the state managment nfs_client
6986 * cl_rpcclient is using krb5i/p, use the integrity protected cl_rpcclient
6987 * and the machine credential as per RFC3530bis and RFC5661 Security
6988 * Considerations sections. Otherwise, just use the user cred with the
6989 * filesystem's rpc_client.
6991 static int _nfs4_proc_secinfo(struct inode
*dir
, const struct qstr
*name
, struct nfs4_secinfo_flavors
*flavors
, bool use_integrity
)
6994 struct nfs4_secinfo_arg args
= {
6995 .dir_fh
= NFS_FH(dir
),
6998 struct nfs4_secinfo_res res
= {
7001 struct rpc_message msg
= {
7002 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SECINFO
],
7006 struct rpc_clnt
*clnt
= NFS_SERVER(dir
)->client
;
7007 struct rpc_cred
*cred
= NULL
;
7009 if (use_integrity
) {
7010 clnt
= NFS_SERVER(dir
)->nfs_client
->cl_rpcclient
;
7011 cred
= nfs4_get_clid_cred(NFS_SERVER(dir
)->nfs_client
);
7012 msg
.rpc_cred
= cred
;
7015 dprintk("NFS call secinfo %s\n", name
->name
);
7017 nfs4_state_protect(NFS_SERVER(dir
)->nfs_client
,
7018 NFS_SP4_MACH_CRED_SECINFO
, &clnt
, &msg
);
7020 status
= nfs4_call_sync(clnt
, NFS_SERVER(dir
), &msg
, &args
.seq_args
,
7022 dprintk("NFS reply secinfo: %d\n", status
);
7030 int nfs4_proc_secinfo(struct inode
*dir
, const struct qstr
*name
,
7031 struct nfs4_secinfo_flavors
*flavors
)
7033 struct nfs4_exception exception
= { };
7036 err
= -NFS4ERR_WRONGSEC
;
7038 /* try to use integrity protection with machine cred */
7039 if (_nfs4_is_integrity_protected(NFS_SERVER(dir
)->nfs_client
))
7040 err
= _nfs4_proc_secinfo(dir
, name
, flavors
, true);
7043 * if unable to use integrity protection, or SECINFO with
7044 * integrity protection returns NFS4ERR_WRONGSEC (which is
7045 * disallowed by spec, but exists in deployed servers) use
7046 * the current filesystem's rpc_client and the user cred.
7048 if (err
== -NFS4ERR_WRONGSEC
)
7049 err
= _nfs4_proc_secinfo(dir
, name
, flavors
, false);
7051 trace_nfs4_secinfo(dir
, name
, err
);
7052 err
= nfs4_handle_exception(NFS_SERVER(dir
), err
,
7054 } while (exception
.retry
);
7058 #ifdef CONFIG_NFS_V4_1
7060 * Check the exchange flags returned by the server for invalid flags, having
7061 * both PNFS and NON_PNFS flags set, and not having one of NON_PNFS, PNFS, or
7064 static int nfs4_check_cl_exchange_flags(u32 flags
)
7066 if (flags
& ~EXCHGID4_FLAG_MASK_R
)
7068 if ((flags
& EXCHGID4_FLAG_USE_PNFS_MDS
) &&
7069 (flags
& EXCHGID4_FLAG_USE_NON_PNFS
))
7071 if (!(flags
& (EXCHGID4_FLAG_MASK_PNFS
)))
7075 return -NFS4ERR_INVAL
;
7079 nfs41_same_server_scope(struct nfs41_server_scope
*a
,
7080 struct nfs41_server_scope
*b
)
7082 if (a
->server_scope_sz
== b
->server_scope_sz
&&
7083 memcmp(a
->server_scope
, b
->server_scope
, a
->server_scope_sz
) == 0)
7090 nfs4_bind_one_conn_to_session_done(struct rpc_task
*task
, void *calldata
)
7094 static const struct rpc_call_ops nfs4_bind_one_conn_to_session_ops
= {
7095 .rpc_call_done
= &nfs4_bind_one_conn_to_session_done
,
7099 * nfs4_proc_bind_one_conn_to_session()
7101 * The 4.1 client currently uses the same TCP connection for the
7102 * fore and backchannel.
7105 int nfs4_proc_bind_one_conn_to_session(struct rpc_clnt
*clnt
,
7106 struct rpc_xprt
*xprt
,
7107 struct nfs_client
*clp
,
7108 struct rpc_cred
*cred
)
7111 struct nfs41_bind_conn_to_session_args args
= {
7113 .dir
= NFS4_CDFC4_FORE_OR_BOTH
,
7115 struct nfs41_bind_conn_to_session_res res
;
7116 struct rpc_message msg
= {
7118 &nfs4_procedures
[NFSPROC4_CLNT_BIND_CONN_TO_SESSION
],
7123 struct rpc_task_setup task_setup_data
= {
7126 .callback_ops
= &nfs4_bind_one_conn_to_session_ops
,
7127 .rpc_message
= &msg
,
7128 .flags
= RPC_TASK_TIMEOUT
,
7130 struct rpc_task
*task
;
7132 dprintk("--> %s\n", __func__
);
7134 nfs4_copy_sessionid(&args
.sessionid
, &clp
->cl_session
->sess_id
);
7135 if (!(clp
->cl_session
->flags
& SESSION4_BACK_CHAN
))
7136 args
.dir
= NFS4_CDFC4_FORE
;
7138 /* Do not set the backchannel flag unless this is clnt->cl_xprt */
7139 if (xprt
!= rcu_access_pointer(clnt
->cl_xprt
))
7140 args
.dir
= NFS4_CDFC4_FORE
;
7142 task
= rpc_run_task(&task_setup_data
);
7143 if (!IS_ERR(task
)) {
7144 status
= task
->tk_status
;
7147 status
= PTR_ERR(task
);
7148 trace_nfs4_bind_conn_to_session(clp
, status
);
7150 if (memcmp(res
.sessionid
.data
,
7151 clp
->cl_session
->sess_id
.data
, NFS4_MAX_SESSIONID_LEN
)) {
7152 dprintk("NFS: %s: Session ID mismatch\n", __func__
);
7156 if ((res
.dir
& args
.dir
) != res
.dir
|| res
.dir
== 0) {
7157 dprintk("NFS: %s: Unexpected direction from server\n",
7162 if (res
.use_conn_in_rdma_mode
!= args
.use_conn_in_rdma_mode
) {
7163 dprintk("NFS: %s: Server returned RDMA mode = true\n",
7170 dprintk("<-- %s status= %d\n", __func__
, status
);
7174 struct rpc_bind_conn_calldata
{
7175 struct nfs_client
*clp
;
7176 struct rpc_cred
*cred
;
7180 nfs4_proc_bind_conn_to_session_callback(struct rpc_clnt
*clnt
,
7181 struct rpc_xprt
*xprt
,
7184 struct rpc_bind_conn_calldata
*p
= calldata
;
7186 return nfs4_proc_bind_one_conn_to_session(clnt
, xprt
, p
->clp
, p
->cred
);
7189 int nfs4_proc_bind_conn_to_session(struct nfs_client
*clp
, struct rpc_cred
*cred
)
7191 struct rpc_bind_conn_calldata data
= {
7195 return rpc_clnt_iterate_for_each_xprt(clp
->cl_rpcclient
,
7196 nfs4_proc_bind_conn_to_session_callback
, &data
);
7200 * Minimum set of SP4_MACH_CRED operations from RFC 5661 in the enforce map
7201 * and operations we'd like to see to enable certain features in the allow map
7203 static const struct nfs41_state_protection nfs4_sp4_mach_cred_request
= {
7204 .how
= SP4_MACH_CRED
,
7205 .enforce
.u
.words
= {
7206 [1] = 1 << (OP_BIND_CONN_TO_SESSION
- 32) |
7207 1 << (OP_EXCHANGE_ID
- 32) |
7208 1 << (OP_CREATE_SESSION
- 32) |
7209 1 << (OP_DESTROY_SESSION
- 32) |
7210 1 << (OP_DESTROY_CLIENTID
- 32)
7213 [0] = 1 << (OP_CLOSE
) |
7214 1 << (OP_OPEN_DOWNGRADE
) |
7216 1 << (OP_DELEGRETURN
) |
7218 [1] = 1 << (OP_SECINFO
- 32) |
7219 1 << (OP_SECINFO_NO_NAME
- 32) |
7220 1 << (OP_LAYOUTRETURN
- 32) |
7221 1 << (OP_TEST_STATEID
- 32) |
7222 1 << (OP_FREE_STATEID
- 32) |
7223 1 << (OP_WRITE
- 32)
7228 * Select the state protection mode for client `clp' given the server results
7229 * from exchange_id in `sp'.
7231 * Returns 0 on success, negative errno otherwise.
7233 static int nfs4_sp4_select_mode(struct nfs_client
*clp
,
7234 struct nfs41_state_protection
*sp
)
7236 static const u32 supported_enforce
[NFS4_OP_MAP_NUM_WORDS
] = {
7237 [1] = 1 << (OP_BIND_CONN_TO_SESSION
- 32) |
7238 1 << (OP_EXCHANGE_ID
- 32) |
7239 1 << (OP_CREATE_SESSION
- 32) |
7240 1 << (OP_DESTROY_SESSION
- 32) |
7241 1 << (OP_DESTROY_CLIENTID
- 32)
7245 if (sp
->how
== SP4_MACH_CRED
) {
7246 /* Print state protect result */
7247 dfprintk(MOUNT
, "Server SP4_MACH_CRED support:\n");
7248 for (i
= 0; i
<= LAST_NFS4_OP
; i
++) {
7249 if (test_bit(i
, sp
->enforce
.u
.longs
))
7250 dfprintk(MOUNT
, " enforce op %d\n", i
);
7251 if (test_bit(i
, sp
->allow
.u
.longs
))
7252 dfprintk(MOUNT
, " allow op %d\n", i
);
7255 /* make sure nothing is on enforce list that isn't supported */
7256 for (i
= 0; i
< NFS4_OP_MAP_NUM_WORDS
; i
++) {
7257 if (sp
->enforce
.u
.words
[i
] & ~supported_enforce
[i
]) {
7258 dfprintk(MOUNT
, "sp4_mach_cred: disabled\n");
7264 * Minimal mode - state operations are allowed to use machine
7265 * credential. Note this already happens by default, so the
7266 * client doesn't have to do anything more than the negotiation.
7268 * NOTE: we don't care if EXCHANGE_ID is in the list -
7269 * we're already using the machine cred for exchange_id
7270 * and will never use a different cred.
7272 if (test_bit(OP_BIND_CONN_TO_SESSION
, sp
->enforce
.u
.longs
) &&
7273 test_bit(OP_CREATE_SESSION
, sp
->enforce
.u
.longs
) &&
7274 test_bit(OP_DESTROY_SESSION
, sp
->enforce
.u
.longs
) &&
7275 test_bit(OP_DESTROY_CLIENTID
, sp
->enforce
.u
.longs
)) {
7276 dfprintk(MOUNT
, "sp4_mach_cred:\n");
7277 dfprintk(MOUNT
, " minimal mode enabled\n");
7278 set_bit(NFS_SP4_MACH_CRED_MINIMAL
, &clp
->cl_sp4_flags
);
7280 dfprintk(MOUNT
, "sp4_mach_cred: disabled\n");
7284 if (test_bit(OP_CLOSE
, sp
->allow
.u
.longs
) &&
7285 test_bit(OP_OPEN_DOWNGRADE
, sp
->allow
.u
.longs
) &&
7286 test_bit(OP_DELEGRETURN
, sp
->allow
.u
.longs
) &&
7287 test_bit(OP_LOCKU
, sp
->allow
.u
.longs
)) {
7288 dfprintk(MOUNT
, " cleanup mode enabled\n");
7289 set_bit(NFS_SP4_MACH_CRED_CLEANUP
, &clp
->cl_sp4_flags
);
7292 if (test_bit(OP_LAYOUTRETURN
, sp
->allow
.u
.longs
)) {
7293 dfprintk(MOUNT
, " pnfs cleanup mode enabled\n");
7294 set_bit(NFS_SP4_MACH_CRED_PNFS_CLEANUP
,
7295 &clp
->cl_sp4_flags
);
7298 if (test_bit(OP_SECINFO
, sp
->allow
.u
.longs
) &&
7299 test_bit(OP_SECINFO_NO_NAME
, sp
->allow
.u
.longs
)) {
7300 dfprintk(MOUNT
, " secinfo mode enabled\n");
7301 set_bit(NFS_SP4_MACH_CRED_SECINFO
, &clp
->cl_sp4_flags
);
7304 if (test_bit(OP_TEST_STATEID
, sp
->allow
.u
.longs
) &&
7305 test_bit(OP_FREE_STATEID
, sp
->allow
.u
.longs
)) {
7306 dfprintk(MOUNT
, " stateid mode enabled\n");
7307 set_bit(NFS_SP4_MACH_CRED_STATEID
, &clp
->cl_sp4_flags
);
7310 if (test_bit(OP_WRITE
, sp
->allow
.u
.longs
)) {
7311 dfprintk(MOUNT
, " write mode enabled\n");
7312 set_bit(NFS_SP4_MACH_CRED_WRITE
, &clp
->cl_sp4_flags
);
7315 if (test_bit(OP_COMMIT
, sp
->allow
.u
.longs
)) {
7316 dfprintk(MOUNT
, " commit mode enabled\n");
7317 set_bit(NFS_SP4_MACH_CRED_COMMIT
, &clp
->cl_sp4_flags
);
7324 struct nfs41_exchange_id_data
{
7325 struct nfs41_exchange_id_res res
;
7326 struct nfs41_exchange_id_args args
;
7327 struct rpc_xprt
*xprt
;
7331 static void nfs4_exchange_id_done(struct rpc_task
*task
, void *data
)
7333 struct nfs41_exchange_id_data
*cdata
=
7334 (struct nfs41_exchange_id_data
*)data
;
7335 struct nfs_client
*clp
= cdata
->args
.client
;
7336 int status
= task
->tk_status
;
7338 trace_nfs4_exchange_id(clp
, status
);
7341 status
= nfs4_check_cl_exchange_flags(cdata
->res
.flags
);
7343 if (cdata
->xprt
&& status
== 0) {
7344 status
= nfs4_detect_session_trunking(clp
, &cdata
->res
,
7350 status
= nfs4_sp4_select_mode(clp
, &cdata
->res
.state_protect
);
7353 clp
->cl_clientid
= cdata
->res
.clientid
;
7354 clp
->cl_exchange_flags
= cdata
->res
.flags
;
7355 /* Client ID is not confirmed */
7356 if (!(cdata
->res
.flags
& EXCHGID4_FLAG_CONFIRMED_R
)) {
7357 clear_bit(NFS4_SESSION_ESTABLISHED
,
7358 &clp
->cl_session
->session_state
);
7359 clp
->cl_seqid
= cdata
->res
.seqid
;
7362 kfree(clp
->cl_serverowner
);
7363 clp
->cl_serverowner
= cdata
->res
.server_owner
;
7364 cdata
->res
.server_owner
= NULL
;
7366 /* use the most recent implementation id */
7367 kfree(clp
->cl_implid
);
7368 clp
->cl_implid
= cdata
->res
.impl_id
;
7369 cdata
->res
.impl_id
= NULL
;
7371 if (clp
->cl_serverscope
!= NULL
&&
7372 !nfs41_same_server_scope(clp
->cl_serverscope
,
7373 cdata
->res
.server_scope
)) {
7374 dprintk("%s: server_scope mismatch detected\n",
7376 set_bit(NFS4CLNT_SERVER_SCOPE_MISMATCH
, &clp
->cl_state
);
7377 kfree(clp
->cl_serverscope
);
7378 clp
->cl_serverscope
= NULL
;
7381 if (clp
->cl_serverscope
== NULL
) {
7382 clp
->cl_serverscope
= cdata
->res
.server_scope
;
7383 cdata
->res
.server_scope
= NULL
;
7385 /* Save the EXCHANGE_ID verifier session trunk tests */
7386 memcpy(clp
->cl_confirm
.data
, cdata
->args
.verifier
->data
,
7387 sizeof(clp
->cl_confirm
.data
));
7390 cdata
->rpc_status
= status
;
7394 static void nfs4_exchange_id_release(void *data
)
7396 struct nfs41_exchange_id_data
*cdata
=
7397 (struct nfs41_exchange_id_data
*)data
;
7399 nfs_put_client(cdata
->args
.client
);
7401 xprt_put(cdata
->xprt
);
7402 rpc_clnt_xprt_switch_put(cdata
->args
.client
->cl_rpcclient
);
7404 kfree(cdata
->res
.impl_id
);
7405 kfree(cdata
->res
.server_scope
);
7406 kfree(cdata
->res
.server_owner
);
7410 static const struct rpc_call_ops nfs4_exchange_id_call_ops
= {
7411 .rpc_call_done
= nfs4_exchange_id_done
,
7412 .rpc_release
= nfs4_exchange_id_release
,
7416 * _nfs4_proc_exchange_id()
7418 * Wrapper for EXCHANGE_ID operation.
7420 static int _nfs4_proc_exchange_id(struct nfs_client
*clp
, struct rpc_cred
*cred
,
7421 u32 sp4_how
, struct rpc_xprt
*xprt
)
7423 nfs4_verifier verifier
;
7424 struct rpc_message msg
= {
7425 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_EXCHANGE_ID
],
7428 struct rpc_task_setup task_setup_data
= {
7429 .rpc_client
= clp
->cl_rpcclient
,
7430 .callback_ops
= &nfs4_exchange_id_call_ops
,
7431 .rpc_message
= &msg
,
7432 .flags
= RPC_TASK_ASYNC
| RPC_TASK_TIMEOUT
,
7434 struct nfs41_exchange_id_data
*calldata
;
7435 struct rpc_task
*task
;
7438 if (!atomic_inc_not_zero(&clp
->cl_count
))
7442 calldata
= kzalloc(sizeof(*calldata
), GFP_NOFS
);
7447 nfs4_init_boot_verifier(clp
, &verifier
);
7449 status
= nfs4_init_uniform_client_string(clp
);
7453 dprintk("NFS call exchange_id auth=%s, '%s'\n",
7454 clp
->cl_rpcclient
->cl_auth
->au_ops
->au_name
,
7457 calldata
->res
.server_owner
= kzalloc(sizeof(struct nfs41_server_owner
),
7460 if (unlikely(calldata
->res
.server_owner
== NULL
))
7463 calldata
->res
.server_scope
= kzalloc(sizeof(struct nfs41_server_scope
),
7465 if (unlikely(calldata
->res
.server_scope
== NULL
))
7466 goto out_server_owner
;
7468 calldata
->res
.impl_id
= kzalloc(sizeof(struct nfs41_impl_id
), GFP_NOFS
);
7469 if (unlikely(calldata
->res
.impl_id
== NULL
))
7470 goto out_server_scope
;
7474 calldata
->args
.state_protect
.how
= SP4_NONE
;
7478 calldata
->args
.state_protect
= nfs4_sp4_mach_cred_request
;
7488 calldata
->xprt
= xprt
;
7489 task_setup_data
.rpc_xprt
= xprt
;
7490 task_setup_data
.flags
=
7491 RPC_TASK_SOFT
|RPC_TASK_SOFTCONN
|RPC_TASK_ASYNC
;
7492 calldata
->args
.verifier
= &clp
->cl_confirm
;
7494 calldata
->args
.verifier
= &verifier
;
7496 calldata
->args
.client
= clp
;
7497 #ifdef CONFIG_NFS_V4_1_MIGRATION
7498 calldata
->args
.flags
= EXCHGID4_FLAG_SUPP_MOVED_REFER
|
7499 EXCHGID4_FLAG_BIND_PRINC_STATEID
|
7500 EXCHGID4_FLAG_SUPP_MOVED_MIGR
,
7502 calldata
->args
.flags
= EXCHGID4_FLAG_SUPP_MOVED_REFER
|
7503 EXCHGID4_FLAG_BIND_PRINC_STATEID
,
7505 msg
.rpc_argp
= &calldata
->args
;
7506 msg
.rpc_resp
= &calldata
->res
;
7507 task_setup_data
.callback_data
= calldata
;
7509 task
= rpc_run_task(&task_setup_data
);
7511 status
= PTR_ERR(task
);
7516 status
= rpc_wait_for_completion_task(task
);
7518 status
= calldata
->rpc_status
;
7519 } else /* session trunking test */
7520 status
= calldata
->rpc_status
;
7524 if (clp
->cl_implid
!= NULL
)
7525 dprintk("NFS reply exchange_id: Server Implementation ID: "
7526 "domain: %s, name: %s, date: %llu,%u\n",
7527 clp
->cl_implid
->domain
, clp
->cl_implid
->name
,
7528 clp
->cl_implid
->date
.seconds
,
7529 clp
->cl_implid
->date
.nseconds
);
7530 dprintk("NFS reply exchange_id: %d\n", status
);
7534 kfree(calldata
->res
.impl_id
);
7536 kfree(calldata
->res
.server_scope
);
7538 kfree(calldata
->res
.server_owner
);
7545 * nfs4_proc_exchange_id()
7547 * Returns zero, a negative errno, or a negative NFS4ERR status code.
7549 * Since the clientid has expired, all compounds using sessions
7550 * associated with the stale clientid will be returning
7551 * NFS4ERR_BADSESSION in the sequence operation, and will therefore
7552 * be in some phase of session reset.
7554 * Will attempt to negotiate SP4_MACH_CRED if krb5i / krb5p auth is used.
7556 int nfs4_proc_exchange_id(struct nfs_client
*clp
, struct rpc_cred
*cred
)
7558 rpc_authflavor_t authflavor
= clp
->cl_rpcclient
->cl_auth
->au_flavor
;
7561 /* try SP4_MACH_CRED if krb5i/p */
7562 if (authflavor
== RPC_AUTH_GSS_KRB5I
||
7563 authflavor
== RPC_AUTH_GSS_KRB5P
) {
7564 status
= _nfs4_proc_exchange_id(clp
, cred
, SP4_MACH_CRED
, NULL
);
7570 return _nfs4_proc_exchange_id(clp
, cred
, SP4_NONE
, NULL
);
7574 * nfs4_test_session_trunk
7576 * This is an add_xprt_test() test function called from
7577 * rpc_clnt_setup_test_and_add_xprt.
7579 * The rpc_xprt_switch is referrenced by rpc_clnt_setup_test_and_add_xprt
7580 * and is dereferrenced in nfs4_exchange_id_release
7582 * Upon success, add the new transport to the rpc_clnt
7584 * @clnt: struct rpc_clnt to get new transport
7585 * @xprt: the rpc_xprt to test
7586 * @data: call data for _nfs4_proc_exchange_id.
7588 int nfs4_test_session_trunk(struct rpc_clnt
*clnt
, struct rpc_xprt
*xprt
,
7591 struct nfs4_add_xprt_data
*adata
= (struct nfs4_add_xprt_data
*)data
;
7594 dprintk("--> %s try %s\n", __func__
,
7595 xprt
->address_strings
[RPC_DISPLAY_ADDR
]);
7597 sp4_how
= (adata
->clp
->cl_sp4_flags
== 0 ? SP4_NONE
: SP4_MACH_CRED
);
7599 /* Test connection for session trunking. Async exchange_id call */
7600 return _nfs4_proc_exchange_id(adata
->clp
, adata
->cred
, sp4_how
, xprt
);
7602 EXPORT_SYMBOL_GPL(nfs4_test_session_trunk
);
7604 static int _nfs4_proc_destroy_clientid(struct nfs_client
*clp
,
7605 struct rpc_cred
*cred
)
7607 struct rpc_message msg
= {
7608 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_DESTROY_CLIENTID
],
7614 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
7615 trace_nfs4_destroy_clientid(clp
, status
);
7617 dprintk("NFS: Got error %d from the server %s on "
7618 "DESTROY_CLIENTID.", status
, clp
->cl_hostname
);
7622 static int nfs4_proc_destroy_clientid(struct nfs_client
*clp
,
7623 struct rpc_cred
*cred
)
7628 for (loop
= NFS4_MAX_LOOP_ON_RECOVER
; loop
!= 0; loop
--) {
7629 ret
= _nfs4_proc_destroy_clientid(clp
, cred
);
7631 case -NFS4ERR_DELAY
:
7632 case -NFS4ERR_CLIENTID_BUSY
:
7642 int nfs4_destroy_clientid(struct nfs_client
*clp
)
7644 struct rpc_cred
*cred
;
7647 if (clp
->cl_mvops
->minor_version
< 1)
7649 if (clp
->cl_exchange_flags
== 0)
7651 if (clp
->cl_preserve_clid
)
7653 cred
= nfs4_get_clid_cred(clp
);
7654 ret
= nfs4_proc_destroy_clientid(clp
, cred
);
7659 case -NFS4ERR_STALE_CLIENTID
:
7660 clp
->cl_exchange_flags
= 0;
7666 struct nfs4_get_lease_time_data
{
7667 struct nfs4_get_lease_time_args
*args
;
7668 struct nfs4_get_lease_time_res
*res
;
7669 struct nfs_client
*clp
;
7672 static void nfs4_get_lease_time_prepare(struct rpc_task
*task
,
7675 struct nfs4_get_lease_time_data
*data
=
7676 (struct nfs4_get_lease_time_data
*)calldata
;
7678 dprintk("--> %s\n", __func__
);
7679 /* just setup sequence, do not trigger session recovery
7680 since we're invoked within one */
7681 nfs41_setup_sequence(data
->clp
->cl_session
,
7682 &data
->args
->la_seq_args
,
7683 &data
->res
->lr_seq_res
,
7685 dprintk("<-- %s\n", __func__
);
7689 * Called from nfs4_state_manager thread for session setup, so don't recover
7690 * from sequence operation or clientid errors.
7692 static void nfs4_get_lease_time_done(struct rpc_task
*task
, void *calldata
)
7694 struct nfs4_get_lease_time_data
*data
=
7695 (struct nfs4_get_lease_time_data
*)calldata
;
7697 dprintk("--> %s\n", __func__
);
7698 if (!nfs41_sequence_done(task
, &data
->res
->lr_seq_res
))
7700 switch (task
->tk_status
) {
7701 case -NFS4ERR_DELAY
:
7702 case -NFS4ERR_GRACE
:
7703 dprintk("%s Retry: tk_status %d\n", __func__
, task
->tk_status
);
7704 rpc_delay(task
, NFS4_POLL_RETRY_MIN
);
7705 task
->tk_status
= 0;
7707 case -NFS4ERR_RETRY_UNCACHED_REP
:
7708 rpc_restart_call_prepare(task
);
7711 dprintk("<-- %s\n", __func__
);
7714 static const struct rpc_call_ops nfs4_get_lease_time_ops
= {
7715 .rpc_call_prepare
= nfs4_get_lease_time_prepare
,
7716 .rpc_call_done
= nfs4_get_lease_time_done
,
7719 int nfs4_proc_get_lease_time(struct nfs_client
*clp
, struct nfs_fsinfo
*fsinfo
)
7721 struct rpc_task
*task
;
7722 struct nfs4_get_lease_time_args args
;
7723 struct nfs4_get_lease_time_res res
= {
7724 .lr_fsinfo
= fsinfo
,
7726 struct nfs4_get_lease_time_data data
= {
7731 struct rpc_message msg
= {
7732 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GET_LEASE_TIME
],
7736 struct rpc_task_setup task_setup
= {
7737 .rpc_client
= clp
->cl_rpcclient
,
7738 .rpc_message
= &msg
,
7739 .callback_ops
= &nfs4_get_lease_time_ops
,
7740 .callback_data
= &data
,
7741 .flags
= RPC_TASK_TIMEOUT
,
7745 nfs4_init_sequence(&args
.la_seq_args
, &res
.lr_seq_res
, 0);
7746 nfs4_set_sequence_privileged(&args
.la_seq_args
);
7747 dprintk("--> %s\n", __func__
);
7748 task
= rpc_run_task(&task_setup
);
7751 status
= PTR_ERR(task
);
7753 status
= task
->tk_status
;
7756 dprintk("<-- %s return %d\n", __func__
, status
);
7762 * Initialize the values to be used by the client in CREATE_SESSION
7763 * If nfs4_init_session set the fore channel request and response sizes,
7766 * Set the back channel max_resp_sz_cached to zero to force the client to
7767 * always set csa_cachethis to FALSE because the current implementation
7768 * of the back channel DRC only supports caching the CB_SEQUENCE operation.
7770 static void nfs4_init_channel_attrs(struct nfs41_create_session_args
*args
,
7771 struct rpc_clnt
*clnt
)
7773 unsigned int max_rqst_sz
, max_resp_sz
;
7774 unsigned int max_bc_payload
= rpc_max_bc_payload(clnt
);
7776 max_rqst_sz
= NFS_MAX_FILE_IO_SIZE
+ nfs41_maxwrite_overhead
;
7777 max_resp_sz
= NFS_MAX_FILE_IO_SIZE
+ nfs41_maxread_overhead
;
7779 /* Fore channel attributes */
7780 args
->fc_attrs
.max_rqst_sz
= max_rqst_sz
;
7781 args
->fc_attrs
.max_resp_sz
= max_resp_sz
;
7782 args
->fc_attrs
.max_ops
= NFS4_MAX_OPS
;
7783 args
->fc_attrs
.max_reqs
= max_session_slots
;
7785 dprintk("%s: Fore Channel : max_rqst_sz=%u max_resp_sz=%u "
7786 "max_ops=%u max_reqs=%u\n",
7788 args
->fc_attrs
.max_rqst_sz
, args
->fc_attrs
.max_resp_sz
,
7789 args
->fc_attrs
.max_ops
, args
->fc_attrs
.max_reqs
);
7791 /* Back channel attributes */
7792 args
->bc_attrs
.max_rqst_sz
= max_bc_payload
;
7793 args
->bc_attrs
.max_resp_sz
= max_bc_payload
;
7794 args
->bc_attrs
.max_resp_sz_cached
= 0;
7795 args
->bc_attrs
.max_ops
= NFS4_MAX_BACK_CHANNEL_OPS
;
7796 args
->bc_attrs
.max_reqs
= min_t(unsigned short, max_session_cb_slots
, 1);
7798 dprintk("%s: Back Channel : max_rqst_sz=%u max_resp_sz=%u "
7799 "max_resp_sz_cached=%u max_ops=%u max_reqs=%u\n",
7801 args
->bc_attrs
.max_rqst_sz
, args
->bc_attrs
.max_resp_sz
,
7802 args
->bc_attrs
.max_resp_sz_cached
, args
->bc_attrs
.max_ops
,
7803 args
->bc_attrs
.max_reqs
);
7806 static int nfs4_verify_fore_channel_attrs(struct nfs41_create_session_args
*args
,
7807 struct nfs41_create_session_res
*res
)
7809 struct nfs4_channel_attrs
*sent
= &args
->fc_attrs
;
7810 struct nfs4_channel_attrs
*rcvd
= &res
->fc_attrs
;
7812 if (rcvd
->max_resp_sz
> sent
->max_resp_sz
)
7815 * Our requested max_ops is the minimum we need; we're not
7816 * prepared to break up compounds into smaller pieces than that.
7817 * So, no point even trying to continue if the server won't
7820 if (rcvd
->max_ops
< sent
->max_ops
)
7822 if (rcvd
->max_reqs
== 0)
7824 if (rcvd
->max_reqs
> NFS4_MAX_SLOT_TABLE
)
7825 rcvd
->max_reqs
= NFS4_MAX_SLOT_TABLE
;
7829 static int nfs4_verify_back_channel_attrs(struct nfs41_create_session_args
*args
,
7830 struct nfs41_create_session_res
*res
)
7832 struct nfs4_channel_attrs
*sent
= &args
->bc_attrs
;
7833 struct nfs4_channel_attrs
*rcvd
= &res
->bc_attrs
;
7835 if (!(res
->flags
& SESSION4_BACK_CHAN
))
7837 if (rcvd
->max_rqst_sz
> sent
->max_rqst_sz
)
7839 if (rcvd
->max_resp_sz
< sent
->max_resp_sz
)
7841 if (rcvd
->max_resp_sz_cached
> sent
->max_resp_sz_cached
)
7843 if (rcvd
->max_ops
> sent
->max_ops
)
7845 if (rcvd
->max_reqs
> sent
->max_reqs
)
7851 static int nfs4_verify_channel_attrs(struct nfs41_create_session_args
*args
,
7852 struct nfs41_create_session_res
*res
)
7856 ret
= nfs4_verify_fore_channel_attrs(args
, res
);
7859 return nfs4_verify_back_channel_attrs(args
, res
);
7862 static void nfs4_update_session(struct nfs4_session
*session
,
7863 struct nfs41_create_session_res
*res
)
7865 nfs4_copy_sessionid(&session
->sess_id
, &res
->sessionid
);
7866 /* Mark client id and session as being confirmed */
7867 session
->clp
->cl_exchange_flags
|= EXCHGID4_FLAG_CONFIRMED_R
;
7868 set_bit(NFS4_SESSION_ESTABLISHED
, &session
->session_state
);
7869 session
->flags
= res
->flags
;
7870 memcpy(&session
->fc_attrs
, &res
->fc_attrs
, sizeof(session
->fc_attrs
));
7871 if (res
->flags
& SESSION4_BACK_CHAN
)
7872 memcpy(&session
->bc_attrs
, &res
->bc_attrs
,
7873 sizeof(session
->bc_attrs
));
7876 static int _nfs4_proc_create_session(struct nfs_client
*clp
,
7877 struct rpc_cred
*cred
)
7879 struct nfs4_session
*session
= clp
->cl_session
;
7880 struct nfs41_create_session_args args
= {
7882 .clientid
= clp
->cl_clientid
,
7883 .seqid
= clp
->cl_seqid
,
7884 .cb_program
= NFS4_CALLBACK
,
7886 struct nfs41_create_session_res res
;
7888 struct rpc_message msg
= {
7889 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_CREATE_SESSION
],
7896 nfs4_init_channel_attrs(&args
, clp
->cl_rpcclient
);
7897 args
.flags
= (SESSION4_PERSIST
| SESSION4_BACK_CHAN
);
7899 status
= rpc_call_sync(session
->clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
7900 trace_nfs4_create_session(clp
, status
);
7903 case -NFS4ERR_STALE_CLIENTID
:
7904 case -NFS4ERR_DELAY
:
7913 /* Verify the session's negotiated channel_attrs values */
7914 status
= nfs4_verify_channel_attrs(&args
, &res
);
7915 /* Increment the clientid slot sequence id */
7918 nfs4_update_session(session
, &res
);
7925 * Issues a CREATE_SESSION operation to the server.
7926 * It is the responsibility of the caller to verify the session is
7927 * expired before calling this routine.
7929 int nfs4_proc_create_session(struct nfs_client
*clp
, struct rpc_cred
*cred
)
7933 struct nfs4_session
*session
= clp
->cl_session
;
7935 dprintk("--> %s clp=%p session=%p\n", __func__
, clp
, session
);
7937 status
= _nfs4_proc_create_session(clp
, cred
);
7941 /* Init or reset the session slot tables */
7942 status
= nfs4_setup_session_slot_tables(session
);
7943 dprintk("slot table setup returned %d\n", status
);
7947 ptr
= (unsigned *)&session
->sess_id
.data
[0];
7948 dprintk("%s client>seqid %d sessionid %u:%u:%u:%u\n", __func__
,
7949 clp
->cl_seqid
, ptr
[0], ptr
[1], ptr
[2], ptr
[3]);
7951 dprintk("<-- %s\n", __func__
);
7956 * Issue the over-the-wire RPC DESTROY_SESSION.
7957 * The caller must serialize access to this routine.
7959 int nfs4_proc_destroy_session(struct nfs4_session
*session
,
7960 struct rpc_cred
*cred
)
7962 struct rpc_message msg
= {
7963 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_DESTROY_SESSION
],
7964 .rpc_argp
= session
,
7969 dprintk("--> nfs4_proc_destroy_session\n");
7971 /* session is still being setup */
7972 if (!test_and_clear_bit(NFS4_SESSION_ESTABLISHED
, &session
->session_state
))
7975 status
= rpc_call_sync(session
->clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
7976 trace_nfs4_destroy_session(session
->clp
, status
);
7979 dprintk("NFS: Got error %d from the server on DESTROY_SESSION. "
7980 "Session has been destroyed regardless...\n", status
);
7982 dprintk("<-- nfs4_proc_destroy_session\n");
7987 * Renew the cl_session lease.
7989 struct nfs4_sequence_data
{
7990 struct nfs_client
*clp
;
7991 struct nfs4_sequence_args args
;
7992 struct nfs4_sequence_res res
;
7995 static void nfs41_sequence_release(void *data
)
7997 struct nfs4_sequence_data
*calldata
= data
;
7998 struct nfs_client
*clp
= calldata
->clp
;
8000 if (atomic_read(&clp
->cl_count
) > 1)
8001 nfs4_schedule_state_renewal(clp
);
8002 nfs_put_client(clp
);
8006 static int nfs41_sequence_handle_errors(struct rpc_task
*task
, struct nfs_client
*clp
)
8008 switch(task
->tk_status
) {
8009 case -NFS4ERR_DELAY
:
8010 rpc_delay(task
, NFS4_POLL_RETRY_MAX
);
8013 nfs4_schedule_lease_recovery(clp
);
8018 static void nfs41_sequence_call_done(struct rpc_task
*task
, void *data
)
8020 struct nfs4_sequence_data
*calldata
= data
;
8021 struct nfs_client
*clp
= calldata
->clp
;
8023 if (!nfs41_sequence_done(task
, task
->tk_msg
.rpc_resp
))
8026 trace_nfs4_sequence(clp
, task
->tk_status
);
8027 if (task
->tk_status
< 0) {
8028 dprintk("%s ERROR %d\n", __func__
, task
->tk_status
);
8029 if (atomic_read(&clp
->cl_count
) == 1)
8032 if (nfs41_sequence_handle_errors(task
, clp
) == -EAGAIN
) {
8033 rpc_restart_call_prepare(task
);
8037 dprintk("%s rpc_cred %p\n", __func__
, task
->tk_msg
.rpc_cred
);
8039 dprintk("<-- %s\n", __func__
);
8042 static void nfs41_sequence_prepare(struct rpc_task
*task
, void *data
)
8044 struct nfs4_sequence_data
*calldata
= data
;
8045 struct nfs_client
*clp
= calldata
->clp
;
8046 struct nfs4_sequence_args
*args
;
8047 struct nfs4_sequence_res
*res
;
8049 args
= task
->tk_msg
.rpc_argp
;
8050 res
= task
->tk_msg
.rpc_resp
;
8052 nfs41_setup_sequence(clp
->cl_session
, args
, res
, task
);
8055 static const struct rpc_call_ops nfs41_sequence_ops
= {
8056 .rpc_call_done
= nfs41_sequence_call_done
,
8057 .rpc_call_prepare
= nfs41_sequence_prepare
,
8058 .rpc_release
= nfs41_sequence_release
,
8061 static struct rpc_task
*_nfs41_proc_sequence(struct nfs_client
*clp
,
8062 struct rpc_cred
*cred
,
8065 struct nfs4_sequence_data
*calldata
;
8066 struct rpc_message msg
= {
8067 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SEQUENCE
],
8070 struct rpc_task_setup task_setup_data
= {
8071 .rpc_client
= clp
->cl_rpcclient
,
8072 .rpc_message
= &msg
,
8073 .callback_ops
= &nfs41_sequence_ops
,
8074 .flags
= RPC_TASK_ASYNC
| RPC_TASK_TIMEOUT
,
8077 if (!atomic_inc_not_zero(&clp
->cl_count
))
8078 return ERR_PTR(-EIO
);
8079 calldata
= kzalloc(sizeof(*calldata
), GFP_NOFS
);
8080 if (calldata
== NULL
) {
8081 nfs_put_client(clp
);
8082 return ERR_PTR(-ENOMEM
);
8084 nfs4_init_sequence(&calldata
->args
, &calldata
->res
, 0);
8086 nfs4_set_sequence_privileged(&calldata
->args
);
8087 msg
.rpc_argp
= &calldata
->args
;
8088 msg
.rpc_resp
= &calldata
->res
;
8089 calldata
->clp
= clp
;
8090 task_setup_data
.callback_data
= calldata
;
8092 return rpc_run_task(&task_setup_data
);
8095 static int nfs41_proc_async_sequence(struct nfs_client
*clp
, struct rpc_cred
*cred
, unsigned renew_flags
)
8097 struct rpc_task
*task
;
8100 if ((renew_flags
& NFS4_RENEW_TIMEOUT
) == 0)
8102 task
= _nfs41_proc_sequence(clp
, cred
, false);
8104 ret
= PTR_ERR(task
);
8106 rpc_put_task_async(task
);
8107 dprintk("<-- %s status=%d\n", __func__
, ret
);
8111 static int nfs4_proc_sequence(struct nfs_client
*clp
, struct rpc_cred
*cred
)
8113 struct rpc_task
*task
;
8116 task
= _nfs41_proc_sequence(clp
, cred
, true);
8118 ret
= PTR_ERR(task
);
8121 ret
= rpc_wait_for_completion_task(task
);
8123 ret
= task
->tk_status
;
8126 dprintk("<-- %s status=%d\n", __func__
, ret
);
8130 struct nfs4_reclaim_complete_data
{
8131 struct nfs_client
*clp
;
8132 struct nfs41_reclaim_complete_args arg
;
8133 struct nfs41_reclaim_complete_res res
;
8136 static void nfs4_reclaim_complete_prepare(struct rpc_task
*task
, void *data
)
8138 struct nfs4_reclaim_complete_data
*calldata
= data
;
8140 nfs41_setup_sequence(calldata
->clp
->cl_session
,
8141 &calldata
->arg
.seq_args
,
8142 &calldata
->res
.seq_res
,
8146 static int nfs41_reclaim_complete_handle_errors(struct rpc_task
*task
, struct nfs_client
*clp
)
8148 switch(task
->tk_status
) {
8150 case -NFS4ERR_COMPLETE_ALREADY
:
8151 case -NFS4ERR_WRONG_CRED
: /* What to do here? */
8153 case -NFS4ERR_DELAY
:
8154 rpc_delay(task
, NFS4_POLL_RETRY_MAX
);
8156 case -NFS4ERR_RETRY_UNCACHED_REP
:
8159 nfs4_schedule_lease_recovery(clp
);
8164 static void nfs4_reclaim_complete_done(struct rpc_task
*task
, void *data
)
8166 struct nfs4_reclaim_complete_data
*calldata
= data
;
8167 struct nfs_client
*clp
= calldata
->clp
;
8168 struct nfs4_sequence_res
*res
= &calldata
->res
.seq_res
;
8170 dprintk("--> %s\n", __func__
);
8171 if (!nfs41_sequence_done(task
, res
))
8174 trace_nfs4_reclaim_complete(clp
, task
->tk_status
);
8175 if (nfs41_reclaim_complete_handle_errors(task
, clp
) == -EAGAIN
) {
8176 rpc_restart_call_prepare(task
);
8179 dprintk("<-- %s\n", __func__
);
8182 static void nfs4_free_reclaim_complete_data(void *data
)
8184 struct nfs4_reclaim_complete_data
*calldata
= data
;
8189 static const struct rpc_call_ops nfs4_reclaim_complete_call_ops
= {
8190 .rpc_call_prepare
= nfs4_reclaim_complete_prepare
,
8191 .rpc_call_done
= nfs4_reclaim_complete_done
,
8192 .rpc_release
= nfs4_free_reclaim_complete_data
,
8196 * Issue a global reclaim complete.
8198 static int nfs41_proc_reclaim_complete(struct nfs_client
*clp
,
8199 struct rpc_cred
*cred
)
8201 struct nfs4_reclaim_complete_data
*calldata
;
8202 struct rpc_task
*task
;
8203 struct rpc_message msg
= {
8204 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RECLAIM_COMPLETE
],
8207 struct rpc_task_setup task_setup_data
= {
8208 .rpc_client
= clp
->cl_rpcclient
,
8209 .rpc_message
= &msg
,
8210 .callback_ops
= &nfs4_reclaim_complete_call_ops
,
8211 .flags
= RPC_TASK_ASYNC
,
8213 int status
= -ENOMEM
;
8215 dprintk("--> %s\n", __func__
);
8216 calldata
= kzalloc(sizeof(*calldata
), GFP_NOFS
);
8217 if (calldata
== NULL
)
8219 calldata
->clp
= clp
;
8220 calldata
->arg
.one_fs
= 0;
8222 nfs4_init_sequence(&calldata
->arg
.seq_args
, &calldata
->res
.seq_res
, 0);
8223 nfs4_set_sequence_privileged(&calldata
->arg
.seq_args
);
8224 msg
.rpc_argp
= &calldata
->arg
;
8225 msg
.rpc_resp
= &calldata
->res
;
8226 task_setup_data
.callback_data
= calldata
;
8227 task
= rpc_run_task(&task_setup_data
);
8229 status
= PTR_ERR(task
);
8232 status
= nfs4_wait_for_completion_rpc_task(task
);
8234 status
= task
->tk_status
;
8238 dprintk("<-- %s status=%d\n", __func__
, status
);
8243 nfs4_layoutget_prepare(struct rpc_task
*task
, void *calldata
)
8245 struct nfs4_layoutget
*lgp
= calldata
;
8246 struct nfs_server
*server
= NFS_SERVER(lgp
->args
.inode
);
8247 struct nfs4_session
*session
= nfs4_get_session(server
);
8249 dprintk("--> %s\n", __func__
);
8250 nfs41_setup_sequence(session
, &lgp
->args
.seq_args
,
8251 &lgp
->res
.seq_res
, task
);
8252 dprintk("<-- %s\n", __func__
);
8255 static void nfs4_layoutget_done(struct rpc_task
*task
, void *calldata
)
8257 struct nfs4_layoutget
*lgp
= calldata
;
8259 dprintk("--> %s\n", __func__
);
8260 nfs41_sequence_process(task
, &lgp
->res
.seq_res
);
8261 dprintk("<-- %s\n", __func__
);
8265 nfs4_layoutget_handle_exception(struct rpc_task
*task
,
8266 struct nfs4_layoutget
*lgp
, struct nfs4_exception
*exception
)
8268 struct inode
*inode
= lgp
->args
.inode
;
8269 struct nfs_server
*server
= NFS_SERVER(inode
);
8270 struct pnfs_layout_hdr
*lo
;
8271 int nfs4err
= task
->tk_status
;
8272 int err
, status
= 0;
8275 dprintk("--> %s tk_status => %d\n", __func__
, -task
->tk_status
);
8282 * NFS4ERR_LAYOUTUNAVAILABLE means we are not supposed to use pnfs
8283 * on the file. set tk_status to -ENODATA to tell upper layer to
8286 case -NFS4ERR_LAYOUTUNAVAILABLE
:
8290 * NFS4ERR_BADLAYOUT means the MDS cannot return a layout of
8291 * length lgp->args.minlength != 0 (see RFC5661 section 18.43.3).
8293 case -NFS4ERR_BADLAYOUT
:
8294 status
= -EOVERFLOW
;
8297 * NFS4ERR_LAYOUTTRYLATER is a conflict with another client
8298 * (or clients) writing to the same RAID stripe except when
8299 * the minlength argument is 0 (see RFC5661 section 18.43.3).
8301 * Treat it like we would RECALLCONFLICT -- we retry for a little
8302 * while, and then eventually give up.
8304 case -NFS4ERR_LAYOUTTRYLATER
:
8305 if (lgp
->args
.minlength
== 0) {
8306 status
= -EOVERFLOW
;
8311 case -NFS4ERR_RECALLCONFLICT
:
8312 status
= -ERECALLCONFLICT
;
8314 case -NFS4ERR_DELEG_REVOKED
:
8315 case -NFS4ERR_ADMIN_REVOKED
:
8316 case -NFS4ERR_EXPIRED
:
8317 case -NFS4ERR_BAD_STATEID
:
8318 exception
->timeout
= 0;
8319 spin_lock(&inode
->i_lock
);
8320 lo
= NFS_I(inode
)->layout
;
8321 /* If the open stateid was bad, then recover it. */
8322 if (!lo
|| test_bit(NFS_LAYOUT_INVALID_STID
, &lo
->plh_flags
) ||
8323 nfs4_stateid_match_other(&lgp
->args
.stateid
,
8324 &lgp
->args
.ctx
->state
->stateid
)) {
8325 spin_unlock(&inode
->i_lock
);
8326 exception
->state
= lgp
->args
.ctx
->state
;
8327 exception
->stateid
= &lgp
->args
.stateid
;
8332 * Mark the bad layout state as invalid, then retry
8334 pnfs_mark_layout_stateid_invalid(lo
, &head
);
8335 spin_unlock(&inode
->i_lock
);
8336 pnfs_free_lseg_list(&head
);
8341 err
= nfs4_handle_exception(server
, nfs4err
, exception
);
8343 if (exception
->retry
)
8349 dprintk("<-- %s\n", __func__
);
8353 static size_t max_response_pages(struct nfs_server
*server
)
8355 u32 max_resp_sz
= server
->nfs_client
->cl_session
->fc_attrs
.max_resp_sz
;
8356 return nfs_page_array_len(0, max_resp_sz
);
8359 static void nfs4_free_pages(struct page
**pages
, size_t size
)
8366 for (i
= 0; i
< size
; i
++) {
8369 __free_page(pages
[i
]);
8374 static struct page
**nfs4_alloc_pages(size_t size
, gfp_t gfp_flags
)
8376 struct page
**pages
;
8379 pages
= kcalloc(size
, sizeof(struct page
*), gfp_flags
);
8381 dprintk("%s: can't alloc array of %zu pages\n", __func__
, size
);
8385 for (i
= 0; i
< size
; i
++) {
8386 pages
[i
] = alloc_page(gfp_flags
);
8388 dprintk("%s: failed to allocate page\n", __func__
);
8389 nfs4_free_pages(pages
, size
);
8397 static void nfs4_layoutget_release(void *calldata
)
8399 struct nfs4_layoutget
*lgp
= calldata
;
8400 struct inode
*inode
= lgp
->args
.inode
;
8401 struct nfs_server
*server
= NFS_SERVER(inode
);
8402 size_t max_pages
= max_response_pages(server
);
8404 dprintk("--> %s\n", __func__
);
8405 nfs4_free_pages(lgp
->args
.layout
.pages
, max_pages
);
8406 pnfs_put_layout_hdr(NFS_I(inode
)->layout
);
8407 put_nfs_open_context(lgp
->args
.ctx
);
8409 dprintk("<-- %s\n", __func__
);
8412 static const struct rpc_call_ops nfs4_layoutget_call_ops
= {
8413 .rpc_call_prepare
= nfs4_layoutget_prepare
,
8414 .rpc_call_done
= nfs4_layoutget_done
,
8415 .rpc_release
= nfs4_layoutget_release
,
8418 struct pnfs_layout_segment
*
8419 nfs4_proc_layoutget(struct nfs4_layoutget
*lgp
, long *timeout
, gfp_t gfp_flags
)
8421 struct inode
*inode
= lgp
->args
.inode
;
8422 struct nfs_server
*server
= NFS_SERVER(inode
);
8423 size_t max_pages
= max_response_pages(server
);
8424 struct rpc_task
*task
;
8425 struct rpc_message msg
= {
8426 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LAYOUTGET
],
8427 .rpc_argp
= &lgp
->args
,
8428 .rpc_resp
= &lgp
->res
,
8429 .rpc_cred
= lgp
->cred
,
8431 struct rpc_task_setup task_setup_data
= {
8432 .rpc_client
= server
->client
,
8433 .rpc_message
= &msg
,
8434 .callback_ops
= &nfs4_layoutget_call_ops
,
8435 .callback_data
= lgp
,
8436 .flags
= RPC_TASK_ASYNC
,
8438 struct pnfs_layout_segment
*lseg
= NULL
;
8439 struct nfs4_exception exception
= {
8441 .timeout
= *timeout
,
8445 dprintk("--> %s\n", __func__
);
8447 /* nfs4_layoutget_release calls pnfs_put_layout_hdr */
8448 pnfs_get_layout_hdr(NFS_I(inode
)->layout
);
8450 lgp
->args
.layout
.pages
= nfs4_alloc_pages(max_pages
, gfp_flags
);
8451 if (!lgp
->args
.layout
.pages
) {
8452 nfs4_layoutget_release(lgp
);
8453 return ERR_PTR(-ENOMEM
);
8455 lgp
->args
.layout
.pglen
= max_pages
* PAGE_SIZE
;
8457 lgp
->res
.layoutp
= &lgp
->args
.layout
;
8458 lgp
->res
.seq_res
.sr_slot
= NULL
;
8459 nfs4_init_sequence(&lgp
->args
.seq_args
, &lgp
->res
.seq_res
, 0);
8461 task
= rpc_run_task(&task_setup_data
);
8463 return ERR_CAST(task
);
8464 status
= nfs4_wait_for_completion_rpc_task(task
);
8466 status
= nfs4_layoutget_handle_exception(task
, lgp
, &exception
);
8467 *timeout
= exception
.timeout
;
8470 trace_nfs4_layoutget(lgp
->args
.ctx
,
8476 /* if layoutp->len is 0, nfs4_layoutget_prepare called rpc_exit */
8477 if (status
== 0 && lgp
->res
.layoutp
->len
)
8478 lseg
= pnfs_layout_process(lgp
);
8479 nfs4_sequence_free_slot(&lgp
->res
.seq_res
);
8481 dprintk("<-- %s status=%d\n", __func__
, status
);
8483 return ERR_PTR(status
);
8488 nfs4_layoutreturn_prepare(struct rpc_task
*task
, void *calldata
)
8490 struct nfs4_layoutreturn
*lrp
= calldata
;
8492 dprintk("--> %s\n", __func__
);
8493 nfs41_setup_sequence(lrp
->clp
->cl_session
,
8494 &lrp
->args
.seq_args
,
8499 static void nfs4_layoutreturn_done(struct rpc_task
*task
, void *calldata
)
8501 struct nfs4_layoutreturn
*lrp
= calldata
;
8502 struct nfs_server
*server
;
8504 dprintk("--> %s\n", __func__
);
8506 if (!nfs41_sequence_process(task
, &lrp
->res
.seq_res
))
8509 server
= NFS_SERVER(lrp
->args
.inode
);
8510 switch (task
->tk_status
) {
8512 task
->tk_status
= 0;
8515 case -NFS4ERR_DELAY
:
8516 if (nfs4_async_handle_error(task
, server
, NULL
, NULL
) != -EAGAIN
)
8518 nfs4_sequence_free_slot(&lrp
->res
.seq_res
);
8519 rpc_restart_call_prepare(task
);
8522 dprintk("<-- %s\n", __func__
);
8525 static void nfs4_layoutreturn_release(void *calldata
)
8527 struct nfs4_layoutreturn
*lrp
= calldata
;
8528 struct pnfs_layout_hdr
*lo
= lrp
->args
.layout
;
8531 dprintk("--> %s\n", __func__
);
8532 spin_lock(&lo
->plh_inode
->i_lock
);
8533 if (lrp
->res
.lrs_present
) {
8534 pnfs_mark_matching_lsegs_invalid(lo
, &freeme
,
8536 be32_to_cpu(lrp
->args
.stateid
.seqid
));
8537 pnfs_set_layout_stateid(lo
, &lrp
->res
.stateid
, true);
8539 pnfs_mark_layout_stateid_invalid(lo
, &freeme
);
8540 pnfs_clear_layoutreturn_waitbit(lo
);
8541 spin_unlock(&lo
->plh_inode
->i_lock
);
8542 nfs4_sequence_free_slot(&lrp
->res
.seq_res
);
8543 pnfs_free_lseg_list(&freeme
);
8544 pnfs_put_layout_hdr(lrp
->args
.layout
);
8545 nfs_iput_and_deactive(lrp
->inode
);
8547 dprintk("<-- %s\n", __func__
);
8550 static const struct rpc_call_ops nfs4_layoutreturn_call_ops
= {
8551 .rpc_call_prepare
= nfs4_layoutreturn_prepare
,
8552 .rpc_call_done
= nfs4_layoutreturn_done
,
8553 .rpc_release
= nfs4_layoutreturn_release
,
8556 int nfs4_proc_layoutreturn(struct nfs4_layoutreturn
*lrp
, bool sync
)
8558 struct rpc_task
*task
;
8559 struct rpc_message msg
= {
8560 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LAYOUTRETURN
],
8561 .rpc_argp
= &lrp
->args
,
8562 .rpc_resp
= &lrp
->res
,
8563 .rpc_cred
= lrp
->cred
,
8565 struct rpc_task_setup task_setup_data
= {
8566 .rpc_client
= NFS_SERVER(lrp
->args
.inode
)->client
,
8567 .rpc_message
= &msg
,
8568 .callback_ops
= &nfs4_layoutreturn_call_ops
,
8569 .callback_data
= lrp
,
8573 nfs4_state_protect(NFS_SERVER(lrp
->args
.inode
)->nfs_client
,
8574 NFS_SP4_MACH_CRED_PNFS_CLEANUP
,
8575 &task_setup_data
.rpc_client
, &msg
);
8577 dprintk("--> %s\n", __func__
);
8579 lrp
->inode
= nfs_igrab_and_active(lrp
->args
.inode
);
8581 nfs4_layoutreturn_release(lrp
);
8584 task_setup_data
.flags
|= RPC_TASK_ASYNC
;
8586 nfs4_init_sequence(&lrp
->args
.seq_args
, &lrp
->res
.seq_res
, 1);
8587 task
= rpc_run_task(&task_setup_data
);
8589 return PTR_ERR(task
);
8591 status
= task
->tk_status
;
8592 trace_nfs4_layoutreturn(lrp
->args
.inode
, &lrp
->args
.stateid
, status
);
8593 dprintk("<-- %s status=%d\n", __func__
, status
);
8599 _nfs4_proc_getdeviceinfo(struct nfs_server
*server
,
8600 struct pnfs_device
*pdev
,
8601 struct rpc_cred
*cred
)
8603 struct nfs4_getdeviceinfo_args args
= {
8605 .notify_types
= NOTIFY_DEVICEID4_CHANGE
|
8606 NOTIFY_DEVICEID4_DELETE
,
8608 struct nfs4_getdeviceinfo_res res
= {
8611 struct rpc_message msg
= {
8612 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GETDEVICEINFO
],
8619 dprintk("--> %s\n", __func__
);
8620 status
= nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
8621 if (res
.notification
& ~args
.notify_types
)
8622 dprintk("%s: unsupported notification\n", __func__
);
8623 if (res
.notification
!= args
.notify_types
)
8626 dprintk("<-- %s status=%d\n", __func__
, status
);
8631 int nfs4_proc_getdeviceinfo(struct nfs_server
*server
,
8632 struct pnfs_device
*pdev
,
8633 struct rpc_cred
*cred
)
8635 struct nfs4_exception exception
= { };
8639 err
= nfs4_handle_exception(server
,
8640 _nfs4_proc_getdeviceinfo(server
, pdev
, cred
),
8642 } while (exception
.retry
);
8645 EXPORT_SYMBOL_GPL(nfs4_proc_getdeviceinfo
);
8647 static void nfs4_layoutcommit_prepare(struct rpc_task
*task
, void *calldata
)
8649 struct nfs4_layoutcommit_data
*data
= calldata
;
8650 struct nfs_server
*server
= NFS_SERVER(data
->args
.inode
);
8651 struct nfs4_session
*session
= nfs4_get_session(server
);
8653 nfs41_setup_sequence(session
,
8654 &data
->args
.seq_args
,
8660 nfs4_layoutcommit_done(struct rpc_task
*task
, void *calldata
)
8662 struct nfs4_layoutcommit_data
*data
= calldata
;
8663 struct nfs_server
*server
= NFS_SERVER(data
->args
.inode
);
8665 if (!nfs41_sequence_done(task
, &data
->res
.seq_res
))
8668 switch (task
->tk_status
) { /* Just ignore these failures */
8669 case -NFS4ERR_DELEG_REVOKED
: /* layout was recalled */
8670 case -NFS4ERR_BADIOMODE
: /* no IOMODE_RW layout for range */
8671 case -NFS4ERR_BADLAYOUT
: /* no layout */
8672 case -NFS4ERR_GRACE
: /* loca_recalim always false */
8673 task
->tk_status
= 0;
8677 if (nfs4_async_handle_error(task
, server
, NULL
, NULL
) == -EAGAIN
) {
8678 rpc_restart_call_prepare(task
);
8684 static void nfs4_layoutcommit_release(void *calldata
)
8686 struct nfs4_layoutcommit_data
*data
= calldata
;
8688 pnfs_cleanup_layoutcommit(data
);
8689 nfs_post_op_update_inode_force_wcc(data
->args
.inode
,
8691 put_rpccred(data
->cred
);
8692 nfs_iput_and_deactive(data
->inode
);
8696 static const struct rpc_call_ops nfs4_layoutcommit_ops
= {
8697 .rpc_call_prepare
= nfs4_layoutcommit_prepare
,
8698 .rpc_call_done
= nfs4_layoutcommit_done
,
8699 .rpc_release
= nfs4_layoutcommit_release
,
8703 nfs4_proc_layoutcommit(struct nfs4_layoutcommit_data
*data
, bool sync
)
8705 struct rpc_message msg
= {
8706 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LAYOUTCOMMIT
],
8707 .rpc_argp
= &data
->args
,
8708 .rpc_resp
= &data
->res
,
8709 .rpc_cred
= data
->cred
,
8711 struct rpc_task_setup task_setup_data
= {
8712 .task
= &data
->task
,
8713 .rpc_client
= NFS_CLIENT(data
->args
.inode
),
8714 .rpc_message
= &msg
,
8715 .callback_ops
= &nfs4_layoutcommit_ops
,
8716 .callback_data
= data
,
8718 struct rpc_task
*task
;
8721 dprintk("NFS: initiating layoutcommit call. sync %d "
8722 "lbw: %llu inode %lu\n", sync
,
8723 data
->args
.lastbytewritten
,
8724 data
->args
.inode
->i_ino
);
8727 data
->inode
= nfs_igrab_and_active(data
->args
.inode
);
8728 if (data
->inode
== NULL
) {
8729 nfs4_layoutcommit_release(data
);
8732 task_setup_data
.flags
= RPC_TASK_ASYNC
;
8734 nfs4_init_sequence(&data
->args
.seq_args
, &data
->res
.seq_res
, 1);
8735 task
= rpc_run_task(&task_setup_data
);
8737 return PTR_ERR(task
);
8739 status
= task
->tk_status
;
8740 trace_nfs4_layoutcommit(data
->args
.inode
, &data
->args
.stateid
, status
);
8741 dprintk("%s: status %d\n", __func__
, status
);
8747 * Use the state managment nfs_client cl_rpcclient, which uses krb5i (if
8748 * possible) as per RFC3530bis and RFC5661 Security Considerations sections
8751 _nfs41_proc_secinfo_no_name(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
8752 struct nfs_fsinfo
*info
,
8753 struct nfs4_secinfo_flavors
*flavors
, bool use_integrity
)
8755 struct nfs41_secinfo_no_name_args args
= {
8756 .style
= SECINFO_STYLE_CURRENT_FH
,
8758 struct nfs4_secinfo_res res
= {
8761 struct rpc_message msg
= {
8762 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SECINFO_NO_NAME
],
8766 struct rpc_clnt
*clnt
= server
->client
;
8767 struct rpc_cred
*cred
= NULL
;
8770 if (use_integrity
) {
8771 clnt
= server
->nfs_client
->cl_rpcclient
;
8772 cred
= nfs4_get_clid_cred(server
->nfs_client
);
8773 msg
.rpc_cred
= cred
;
8776 dprintk("--> %s\n", __func__
);
8777 status
= nfs4_call_sync(clnt
, server
, &msg
, &args
.seq_args
,
8779 dprintk("<-- %s status=%d\n", __func__
, status
);
8788 nfs41_proc_secinfo_no_name(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
8789 struct nfs_fsinfo
*info
, struct nfs4_secinfo_flavors
*flavors
)
8791 struct nfs4_exception exception
= { };
8794 /* first try using integrity protection */
8795 err
= -NFS4ERR_WRONGSEC
;
8797 /* try to use integrity protection with machine cred */
8798 if (_nfs4_is_integrity_protected(server
->nfs_client
))
8799 err
= _nfs41_proc_secinfo_no_name(server
, fhandle
, info
,
8803 * if unable to use integrity protection, or SECINFO with
8804 * integrity protection returns NFS4ERR_WRONGSEC (which is
8805 * disallowed by spec, but exists in deployed servers) use
8806 * the current filesystem's rpc_client and the user cred.
8808 if (err
== -NFS4ERR_WRONGSEC
)
8809 err
= _nfs41_proc_secinfo_no_name(server
, fhandle
, info
,
8814 case -NFS4ERR_WRONGSEC
:
8818 err
= nfs4_handle_exception(server
, err
, &exception
);
8820 } while (exception
.retry
);
8826 nfs41_find_root_sec(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
8827 struct nfs_fsinfo
*info
)
8831 rpc_authflavor_t flavor
= RPC_AUTH_MAXFLAVOR
;
8832 struct nfs4_secinfo_flavors
*flavors
;
8833 struct nfs4_secinfo4
*secinfo
;
8836 page
= alloc_page(GFP_KERNEL
);
8842 flavors
= page_address(page
);
8843 err
= nfs41_proc_secinfo_no_name(server
, fhandle
, info
, flavors
);
8846 * Fall back on "guess and check" method if
8847 * the server doesn't support SECINFO_NO_NAME
8849 if (err
== -NFS4ERR_WRONGSEC
|| err
== -ENOTSUPP
) {
8850 err
= nfs4_find_root_sec(server
, fhandle
, info
);
8856 for (i
= 0; i
< flavors
->num_flavors
; i
++) {
8857 secinfo
= &flavors
->flavors
[i
];
8859 switch (secinfo
->flavor
) {
8863 flavor
= rpcauth_get_pseudoflavor(secinfo
->flavor
,
8864 &secinfo
->flavor_info
);
8867 flavor
= RPC_AUTH_MAXFLAVOR
;
8871 if (!nfs_auth_info_match(&server
->auth_info
, flavor
))
8872 flavor
= RPC_AUTH_MAXFLAVOR
;
8874 if (flavor
!= RPC_AUTH_MAXFLAVOR
) {
8875 err
= nfs4_lookup_root_sec(server
, fhandle
,
8882 if (flavor
== RPC_AUTH_MAXFLAVOR
)
8893 static int _nfs41_test_stateid(struct nfs_server
*server
,
8894 nfs4_stateid
*stateid
,
8895 struct rpc_cred
*cred
)
8898 struct nfs41_test_stateid_args args
= {
8901 struct nfs41_test_stateid_res res
;
8902 struct rpc_message msg
= {
8903 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_TEST_STATEID
],
8908 struct rpc_clnt
*rpc_client
= server
->client
;
8910 nfs4_state_protect(server
->nfs_client
, NFS_SP4_MACH_CRED_STATEID
,
8913 dprintk("NFS call test_stateid %p\n", stateid
);
8914 nfs4_init_sequence(&args
.seq_args
, &res
.seq_res
, 0);
8915 nfs4_set_sequence_privileged(&args
.seq_args
);
8916 status
= nfs4_call_sync_sequence(rpc_client
, server
, &msg
,
8917 &args
.seq_args
, &res
.seq_res
);
8918 if (status
!= NFS_OK
) {
8919 dprintk("NFS reply test_stateid: failed, %d\n", status
);
8922 dprintk("NFS reply test_stateid: succeeded, %d\n", -res
.status
);
8926 static void nfs4_handle_delay_or_session_error(struct nfs_server
*server
,
8927 int err
, struct nfs4_exception
*exception
)
8929 exception
->retry
= 0;
8931 case -NFS4ERR_DELAY
:
8932 case -NFS4ERR_RETRY_UNCACHED_REP
:
8933 nfs4_handle_exception(server
, err
, exception
);
8935 case -NFS4ERR_BADSESSION
:
8936 case -NFS4ERR_BADSLOT
:
8937 case -NFS4ERR_BAD_HIGH_SLOT
:
8938 case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION
:
8939 case -NFS4ERR_DEADSESSION
:
8940 nfs4_do_handle_exception(server
, err
, exception
);
8945 * nfs41_test_stateid - perform a TEST_STATEID operation
8947 * @server: server / transport on which to perform the operation
8948 * @stateid: state ID to test
8951 * Returns NFS_OK if the server recognizes that "stateid" is valid.
8952 * Otherwise a negative NFS4ERR value is returned if the operation
8953 * failed or the state ID is not currently valid.
8955 static int nfs41_test_stateid(struct nfs_server
*server
,
8956 nfs4_stateid
*stateid
,
8957 struct rpc_cred
*cred
)
8959 struct nfs4_exception exception
= { };
8962 err
= _nfs41_test_stateid(server
, stateid
, cred
);
8963 nfs4_handle_delay_or_session_error(server
, err
, &exception
);
8964 } while (exception
.retry
);
8968 struct nfs_free_stateid_data
{
8969 struct nfs_server
*server
;
8970 struct nfs41_free_stateid_args args
;
8971 struct nfs41_free_stateid_res res
;
8974 static void nfs41_free_stateid_prepare(struct rpc_task
*task
, void *calldata
)
8976 struct nfs_free_stateid_data
*data
= calldata
;
8977 nfs41_setup_sequence(nfs4_get_session(data
->server
),
8978 &data
->args
.seq_args
,
8983 static void nfs41_free_stateid_done(struct rpc_task
*task
, void *calldata
)
8985 struct nfs_free_stateid_data
*data
= calldata
;
8987 nfs41_sequence_done(task
, &data
->res
.seq_res
);
8989 switch (task
->tk_status
) {
8990 case -NFS4ERR_DELAY
:
8991 if (nfs4_async_handle_error(task
, data
->server
, NULL
, NULL
) == -EAGAIN
)
8992 rpc_restart_call_prepare(task
);
8996 static void nfs41_free_stateid_release(void *calldata
)
9001 static const struct rpc_call_ops nfs41_free_stateid_ops
= {
9002 .rpc_call_prepare
= nfs41_free_stateid_prepare
,
9003 .rpc_call_done
= nfs41_free_stateid_done
,
9004 .rpc_release
= nfs41_free_stateid_release
,
9007 static struct rpc_task
*_nfs41_free_stateid(struct nfs_server
*server
,
9008 const nfs4_stateid
*stateid
,
9009 struct rpc_cred
*cred
,
9012 struct rpc_message msg
= {
9013 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_FREE_STATEID
],
9016 struct rpc_task_setup task_setup
= {
9017 .rpc_client
= server
->client
,
9018 .rpc_message
= &msg
,
9019 .callback_ops
= &nfs41_free_stateid_ops
,
9020 .flags
= RPC_TASK_ASYNC
,
9022 struct nfs_free_stateid_data
*data
;
9024 nfs4_state_protect(server
->nfs_client
, NFS_SP4_MACH_CRED_STATEID
,
9025 &task_setup
.rpc_client
, &msg
);
9027 dprintk("NFS call free_stateid %p\n", stateid
);
9028 data
= kmalloc(sizeof(*data
), GFP_NOFS
);
9030 return ERR_PTR(-ENOMEM
);
9031 data
->server
= server
;
9032 nfs4_stateid_copy(&data
->args
.stateid
, stateid
);
9034 task_setup
.callback_data
= data
;
9036 msg
.rpc_argp
= &data
->args
;
9037 msg
.rpc_resp
= &data
->res
;
9038 nfs4_init_sequence(&data
->args
.seq_args
, &data
->res
.seq_res
, 1);
9040 nfs4_set_sequence_privileged(&data
->args
.seq_args
);
9042 return rpc_run_task(&task_setup
);
9046 * nfs41_free_stateid - perform a FREE_STATEID operation
9048 * @server: server / transport on which to perform the operation
9049 * @stateid: state ID to release
9051 * @is_recovery: set to true if this call needs to be privileged
9053 * Note: this function is always asynchronous.
9055 static int nfs41_free_stateid(struct nfs_server
*server
,
9056 const nfs4_stateid
*stateid
,
9057 struct rpc_cred
*cred
,
9060 struct rpc_task
*task
;
9062 task
= _nfs41_free_stateid(server
, stateid
, cred
, is_recovery
);
9064 return PTR_ERR(task
);
9070 nfs41_free_lock_state(struct nfs_server
*server
, struct nfs4_lock_state
*lsp
)
9072 struct rpc_cred
*cred
= lsp
->ls_state
->owner
->so_cred
;
9074 nfs41_free_stateid(server
, &lsp
->ls_stateid
, cred
, false);
9075 nfs4_free_lock_state(server
, lsp
);
9078 static bool nfs41_match_stateid(const nfs4_stateid
*s1
,
9079 const nfs4_stateid
*s2
)
9081 if (s1
->type
!= s2
->type
)
9084 if (memcmp(s1
->other
, s2
->other
, sizeof(s1
->other
)) != 0)
9087 if (s1
->seqid
== s2
->seqid
)
9089 if (s1
->seqid
== 0 || s2
->seqid
== 0)
9095 #endif /* CONFIG_NFS_V4_1 */
9097 static bool nfs4_match_stateid(const nfs4_stateid
*s1
,
9098 const nfs4_stateid
*s2
)
9100 return nfs4_stateid_match(s1
, s2
);
9104 static const struct nfs4_state_recovery_ops nfs40_reboot_recovery_ops
= {
9105 .owner_flag_bit
= NFS_OWNER_RECLAIM_REBOOT
,
9106 .state_flag_bit
= NFS_STATE_RECLAIM_REBOOT
,
9107 .recover_open
= nfs4_open_reclaim
,
9108 .recover_lock
= nfs4_lock_reclaim
,
9109 .establish_clid
= nfs4_init_clientid
,
9110 .detect_trunking
= nfs40_discover_server_trunking
,
9113 #if defined(CONFIG_NFS_V4_1)
9114 static const struct nfs4_state_recovery_ops nfs41_reboot_recovery_ops
= {
9115 .owner_flag_bit
= NFS_OWNER_RECLAIM_REBOOT
,
9116 .state_flag_bit
= NFS_STATE_RECLAIM_REBOOT
,
9117 .recover_open
= nfs4_open_reclaim
,
9118 .recover_lock
= nfs4_lock_reclaim
,
9119 .establish_clid
= nfs41_init_clientid
,
9120 .reclaim_complete
= nfs41_proc_reclaim_complete
,
9121 .detect_trunking
= nfs41_discover_server_trunking
,
9123 #endif /* CONFIG_NFS_V4_1 */
9125 static const struct nfs4_state_recovery_ops nfs40_nograce_recovery_ops
= {
9126 .owner_flag_bit
= NFS_OWNER_RECLAIM_NOGRACE
,
9127 .state_flag_bit
= NFS_STATE_RECLAIM_NOGRACE
,
9128 .recover_open
= nfs40_open_expired
,
9129 .recover_lock
= nfs4_lock_expired
,
9130 .establish_clid
= nfs4_init_clientid
,
9133 #if defined(CONFIG_NFS_V4_1)
9134 static const struct nfs4_state_recovery_ops nfs41_nograce_recovery_ops
= {
9135 .owner_flag_bit
= NFS_OWNER_RECLAIM_NOGRACE
,
9136 .state_flag_bit
= NFS_STATE_RECLAIM_NOGRACE
,
9137 .recover_open
= nfs41_open_expired
,
9138 .recover_lock
= nfs41_lock_expired
,
9139 .establish_clid
= nfs41_init_clientid
,
9141 #endif /* CONFIG_NFS_V4_1 */
9143 static const struct nfs4_state_maintenance_ops nfs40_state_renewal_ops
= {
9144 .sched_state_renewal
= nfs4_proc_async_renew
,
9145 .get_state_renewal_cred_locked
= nfs4_get_renew_cred_locked
,
9146 .renew_lease
= nfs4_proc_renew
,
9149 #if defined(CONFIG_NFS_V4_1)
9150 static const struct nfs4_state_maintenance_ops nfs41_state_renewal_ops
= {
9151 .sched_state_renewal
= nfs41_proc_async_sequence
,
9152 .get_state_renewal_cred_locked
= nfs4_get_machine_cred_locked
,
9153 .renew_lease
= nfs4_proc_sequence
,
9157 static const struct nfs4_mig_recovery_ops nfs40_mig_recovery_ops
= {
9158 .get_locations
= _nfs40_proc_get_locations
,
9159 .fsid_present
= _nfs40_proc_fsid_present
,
9162 #if defined(CONFIG_NFS_V4_1)
9163 static const struct nfs4_mig_recovery_ops nfs41_mig_recovery_ops
= {
9164 .get_locations
= _nfs41_proc_get_locations
,
9165 .fsid_present
= _nfs41_proc_fsid_present
,
9167 #endif /* CONFIG_NFS_V4_1 */
9169 static const struct nfs4_minor_version_ops nfs_v4_0_minor_ops
= {
9171 .init_caps
= NFS_CAP_READDIRPLUS
9172 | NFS_CAP_ATOMIC_OPEN
9173 | NFS_CAP_POSIX_LOCK
,
9174 .init_client
= nfs40_init_client
,
9175 .shutdown_client
= nfs40_shutdown_client
,
9176 .match_stateid
= nfs4_match_stateid
,
9177 .find_root_sec
= nfs4_find_root_sec
,
9178 .free_lock_state
= nfs4_release_lockowner
,
9179 .test_and_free_expired
= nfs40_test_and_free_expired_stateid
,
9180 .alloc_seqid
= nfs_alloc_seqid
,
9181 .call_sync_ops
= &nfs40_call_sync_ops
,
9182 .reboot_recovery_ops
= &nfs40_reboot_recovery_ops
,
9183 .nograce_recovery_ops
= &nfs40_nograce_recovery_ops
,
9184 .state_renewal_ops
= &nfs40_state_renewal_ops
,
9185 .mig_recovery_ops
= &nfs40_mig_recovery_ops
,
9188 #if defined(CONFIG_NFS_V4_1)
9189 static struct nfs_seqid
*
9190 nfs_alloc_no_seqid(struct nfs_seqid_counter
*arg1
, gfp_t arg2
)
9195 static const struct nfs4_minor_version_ops nfs_v4_1_minor_ops
= {
9197 .init_caps
= NFS_CAP_READDIRPLUS
9198 | NFS_CAP_ATOMIC_OPEN
9199 | NFS_CAP_POSIX_LOCK
9200 | NFS_CAP_STATEID_NFSV41
9201 | NFS_CAP_ATOMIC_OPEN_V1
,
9202 .init_client
= nfs41_init_client
,
9203 .shutdown_client
= nfs41_shutdown_client
,
9204 .match_stateid
= nfs41_match_stateid
,
9205 .find_root_sec
= nfs41_find_root_sec
,
9206 .free_lock_state
= nfs41_free_lock_state
,
9207 .test_and_free_expired
= nfs41_test_and_free_expired_stateid
,
9208 .alloc_seqid
= nfs_alloc_no_seqid
,
9209 .session_trunk
= nfs4_test_session_trunk
,
9210 .call_sync_ops
= &nfs41_call_sync_ops
,
9211 .reboot_recovery_ops
= &nfs41_reboot_recovery_ops
,
9212 .nograce_recovery_ops
= &nfs41_nograce_recovery_ops
,
9213 .state_renewal_ops
= &nfs41_state_renewal_ops
,
9214 .mig_recovery_ops
= &nfs41_mig_recovery_ops
,
9218 #if defined(CONFIG_NFS_V4_2)
9219 static const struct nfs4_minor_version_ops nfs_v4_2_minor_ops
= {
9221 .init_caps
= NFS_CAP_READDIRPLUS
9222 | NFS_CAP_ATOMIC_OPEN
9223 | NFS_CAP_POSIX_LOCK
9224 | NFS_CAP_STATEID_NFSV41
9225 | NFS_CAP_ATOMIC_OPEN_V1
9228 | NFS_CAP_DEALLOCATE
9230 | NFS_CAP_LAYOUTSTATS
9232 .init_client
= nfs41_init_client
,
9233 .shutdown_client
= nfs41_shutdown_client
,
9234 .match_stateid
= nfs41_match_stateid
,
9235 .find_root_sec
= nfs41_find_root_sec
,
9236 .free_lock_state
= nfs41_free_lock_state
,
9237 .call_sync_ops
= &nfs41_call_sync_ops
,
9238 .test_and_free_expired
= nfs41_test_and_free_expired_stateid
,
9239 .alloc_seqid
= nfs_alloc_no_seqid
,
9240 .session_trunk
= nfs4_test_session_trunk
,
9241 .reboot_recovery_ops
= &nfs41_reboot_recovery_ops
,
9242 .nograce_recovery_ops
= &nfs41_nograce_recovery_ops
,
9243 .state_renewal_ops
= &nfs41_state_renewal_ops
,
9244 .mig_recovery_ops
= &nfs41_mig_recovery_ops
,
9248 const struct nfs4_minor_version_ops
*nfs_v4_minor_ops
[] = {
9249 [0] = &nfs_v4_0_minor_ops
,
9250 #if defined(CONFIG_NFS_V4_1)
9251 [1] = &nfs_v4_1_minor_ops
,
9253 #if defined(CONFIG_NFS_V4_2)
9254 [2] = &nfs_v4_2_minor_ops
,
9258 static ssize_t
nfs4_listxattr(struct dentry
*dentry
, char *list
, size_t size
)
9260 ssize_t error
, error2
;
9262 error
= generic_listxattr(dentry
, list
, size
);
9270 error2
= nfs4_listxattr_nfs4_label(d_inode(dentry
), list
, size
);
9273 return error
+ error2
;
9276 static const struct inode_operations nfs4_dir_inode_operations
= {
9277 .create
= nfs_create
,
9278 .lookup
= nfs_lookup
,
9279 .atomic_open
= nfs_atomic_open
,
9281 .unlink
= nfs_unlink
,
9282 .symlink
= nfs_symlink
,
9286 .rename
= nfs_rename
,
9287 .permission
= nfs_permission
,
9288 .getattr
= nfs_getattr
,
9289 .setattr
= nfs_setattr
,
9290 .getxattr
= generic_getxattr
,
9291 .setxattr
= generic_setxattr
,
9292 .listxattr
= nfs4_listxattr
,
9293 .removexattr
= generic_removexattr
,
9296 static const struct inode_operations nfs4_file_inode_operations
= {
9297 .permission
= nfs_permission
,
9298 .getattr
= nfs_getattr
,
9299 .setattr
= nfs_setattr
,
9300 .getxattr
= generic_getxattr
,
9301 .setxattr
= generic_setxattr
,
9302 .listxattr
= nfs4_listxattr
,
9303 .removexattr
= generic_removexattr
,
9306 const struct nfs_rpc_ops nfs_v4_clientops
= {
9307 .version
= 4, /* protocol version */
9308 .dentry_ops
= &nfs4_dentry_operations
,
9309 .dir_inode_ops
= &nfs4_dir_inode_operations
,
9310 .file_inode_ops
= &nfs4_file_inode_operations
,
9311 .file_ops
= &nfs4_file_operations
,
9312 .getroot
= nfs4_proc_get_root
,
9313 .submount
= nfs4_submount
,
9314 .try_mount
= nfs4_try_mount
,
9315 .getattr
= nfs4_proc_getattr
,
9316 .setattr
= nfs4_proc_setattr
,
9317 .lookup
= nfs4_proc_lookup
,
9318 .access
= nfs4_proc_access
,
9319 .readlink
= nfs4_proc_readlink
,
9320 .create
= nfs4_proc_create
,
9321 .remove
= nfs4_proc_remove
,
9322 .unlink_setup
= nfs4_proc_unlink_setup
,
9323 .unlink_rpc_prepare
= nfs4_proc_unlink_rpc_prepare
,
9324 .unlink_done
= nfs4_proc_unlink_done
,
9325 .rename_setup
= nfs4_proc_rename_setup
,
9326 .rename_rpc_prepare
= nfs4_proc_rename_rpc_prepare
,
9327 .rename_done
= nfs4_proc_rename_done
,
9328 .link
= nfs4_proc_link
,
9329 .symlink
= nfs4_proc_symlink
,
9330 .mkdir
= nfs4_proc_mkdir
,
9331 .rmdir
= nfs4_proc_remove
,
9332 .readdir
= nfs4_proc_readdir
,
9333 .mknod
= nfs4_proc_mknod
,
9334 .statfs
= nfs4_proc_statfs
,
9335 .fsinfo
= nfs4_proc_fsinfo
,
9336 .pathconf
= nfs4_proc_pathconf
,
9337 .set_capabilities
= nfs4_server_capabilities
,
9338 .decode_dirent
= nfs4_decode_dirent
,
9339 .pgio_rpc_prepare
= nfs4_proc_pgio_rpc_prepare
,
9340 .read_setup
= nfs4_proc_read_setup
,
9341 .read_done
= nfs4_read_done
,
9342 .write_setup
= nfs4_proc_write_setup
,
9343 .write_done
= nfs4_write_done
,
9344 .commit_setup
= nfs4_proc_commit_setup
,
9345 .commit_rpc_prepare
= nfs4_proc_commit_rpc_prepare
,
9346 .commit_done
= nfs4_commit_done
,
9347 .lock
= nfs4_proc_lock
,
9348 .clear_acl_cache
= nfs4_zap_acl_attr
,
9349 .close_context
= nfs4_close_context
,
9350 .open_context
= nfs4_atomic_open
,
9351 .have_delegation
= nfs4_have_delegation
,
9352 .return_delegation
= nfs4_inode_return_delegation
,
9353 .alloc_client
= nfs4_alloc_client
,
9354 .init_client
= nfs4_init_client
,
9355 .free_client
= nfs4_free_client
,
9356 .create_server
= nfs4_create_server
,
9357 .clone_server
= nfs_clone_server
,
9360 static const struct xattr_handler nfs4_xattr_nfs4_acl_handler
= {
9361 .name
= XATTR_NAME_NFSV4_ACL
,
9362 .list
= nfs4_xattr_list_nfs4_acl
,
9363 .get
= nfs4_xattr_get_nfs4_acl
,
9364 .set
= nfs4_xattr_set_nfs4_acl
,
9367 const struct xattr_handler
*nfs4_xattr_handlers
[] = {
9368 &nfs4_xattr_nfs4_acl_handler
,
9369 #ifdef CONFIG_NFS_V4_SECURITY_LABEL
9370 &nfs4_xattr_nfs4_label_handler
,