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
*, nfs4_stateid
*,
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 long nfs4_update_delay(long *timeout
)
335 return NFS4_POLL_RETRY_MAX
;
337 *timeout
= NFS4_POLL_RETRY_MIN
;
338 if (*timeout
> NFS4_POLL_RETRY_MAX
)
339 *timeout
= NFS4_POLL_RETRY_MAX
;
345 static int nfs4_delay(struct rpc_clnt
*clnt
, long *timeout
)
351 freezable_schedule_timeout_killable_unsafe(
352 nfs4_update_delay(timeout
));
353 if (fatal_signal_pending(current
))
358 /* This is the error handling routine for processes that are allowed
361 static int nfs4_do_handle_exception(struct nfs_server
*server
,
362 int errorcode
, struct nfs4_exception
*exception
)
364 struct nfs_client
*clp
= server
->nfs_client
;
365 struct nfs4_state
*state
= exception
->state
;
366 const nfs4_stateid
*stateid
= exception
->stateid
;
367 struct inode
*inode
= exception
->inode
;
370 exception
->delay
= 0;
371 exception
->recovering
= 0;
372 exception
->retry
= 0;
376 case -NFS4ERR_OPENMODE
:
377 case -NFS4ERR_DELEG_REVOKED
:
378 case -NFS4ERR_ADMIN_REVOKED
:
379 case -NFS4ERR_BAD_STATEID
:
383 err
= nfs_async_inode_return_delegation(inode
,
386 goto wait_on_recovery
;
387 if (stateid
!= NULL
&& stateid
->type
== NFS4_DELEGATION_STATEID_TYPE
) {
388 exception
->retry
= 1;
394 ret
= nfs4_schedule_stateid_recovery(server
, state
);
397 goto wait_on_recovery
;
398 case -NFS4ERR_EXPIRED
:
400 ret
= nfs4_schedule_stateid_recovery(server
, state
);
404 case -NFS4ERR_STALE_STATEID
:
405 case -NFS4ERR_STALE_CLIENTID
:
406 nfs4_schedule_lease_recovery(clp
);
407 goto wait_on_recovery
;
409 ret
= nfs4_schedule_migration_recovery(server
);
412 goto wait_on_recovery
;
413 case -NFS4ERR_LEASE_MOVED
:
414 nfs4_schedule_lease_moved_recovery(clp
);
415 goto wait_on_recovery
;
416 #if defined(CONFIG_NFS_V4_1)
417 case -NFS4ERR_BADSESSION
:
418 case -NFS4ERR_BADSLOT
:
419 case -NFS4ERR_BAD_HIGH_SLOT
:
420 case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION
:
421 case -NFS4ERR_DEADSESSION
:
422 case -NFS4ERR_SEQ_FALSE_RETRY
:
423 case -NFS4ERR_SEQ_MISORDERED
:
424 dprintk("%s ERROR: %d Reset session\n", __func__
,
426 nfs4_schedule_session_recovery(clp
->cl_session
, errorcode
);
427 goto wait_on_recovery
;
428 #endif /* defined(CONFIG_NFS_V4_1) */
429 case -NFS4ERR_FILE_OPEN
:
430 if (exception
->timeout
> HZ
) {
431 /* We have retried a decent amount, time to
438 nfs_inc_server_stats(server
, NFSIOS_DELAY
);
440 case -NFS4ERR_LAYOUTTRYLATER
:
441 case -NFS4ERR_RECALLCONFLICT
:
442 exception
->delay
= 1;
445 case -NFS4ERR_RETRY_UNCACHED_REP
:
446 case -NFS4ERR_OLD_STATEID
:
447 exception
->retry
= 1;
449 case -NFS4ERR_BADOWNER
:
450 /* The following works around a Linux server bug! */
451 case -NFS4ERR_BADNAME
:
452 if (server
->caps
& NFS_CAP_UIDGID_NOMAP
) {
453 server
->caps
&= ~NFS_CAP_UIDGID_NOMAP
;
454 exception
->retry
= 1;
455 printk(KERN_WARNING
"NFS: v4 server %s "
456 "does not accept raw "
458 "Reenabling the idmapper.\n",
459 server
->nfs_client
->cl_hostname
);
462 /* We failed to handle the error */
463 return nfs4_map_errors(ret
);
465 exception
->recovering
= 1;
469 /* This is the error handling routine for processes that are allowed
472 int nfs4_handle_exception(struct nfs_server
*server
, int errorcode
, struct nfs4_exception
*exception
)
474 struct nfs_client
*clp
= server
->nfs_client
;
477 ret
= nfs4_do_handle_exception(server
, errorcode
, exception
);
478 if (exception
->delay
) {
479 ret
= nfs4_delay(server
->client
, &exception
->timeout
);
482 if (exception
->recovering
) {
483 ret
= nfs4_wait_clnt_recover(clp
);
484 if (test_bit(NFS_MIG_FAILED
, &server
->mig_status
))
491 exception
->retry
= 1;
496 nfs4_async_handle_exception(struct rpc_task
*task
, struct nfs_server
*server
,
497 int errorcode
, struct nfs4_exception
*exception
)
499 struct nfs_client
*clp
= server
->nfs_client
;
502 ret
= nfs4_do_handle_exception(server
, errorcode
, exception
);
503 if (exception
->delay
) {
504 rpc_delay(task
, nfs4_update_delay(&exception
->timeout
));
507 if (exception
->recovering
) {
508 rpc_sleep_on(&clp
->cl_rpcwaitq
, task
, NULL
);
509 if (test_bit(NFS4CLNT_MANAGER_RUNNING
, &clp
->cl_state
) == 0)
510 rpc_wake_up_queued_task(&clp
->cl_rpcwaitq
, task
);
513 if (test_bit(NFS_MIG_FAILED
, &server
->mig_status
))
518 exception
->retry
= 1;
523 nfs4_async_handle_error(struct rpc_task
*task
, struct nfs_server
*server
,
524 struct nfs4_state
*state
, long *timeout
)
526 struct nfs4_exception exception
= {
530 if (task
->tk_status
>= 0)
533 exception
.timeout
= *timeout
;
534 task
->tk_status
= nfs4_async_handle_exception(task
, server
,
537 if (exception
.delay
&& timeout
)
538 *timeout
= exception
.timeout
;
545 * Return 'true' if 'clp' is using an rpc_client that is integrity protected
546 * or 'false' otherwise.
548 static bool _nfs4_is_integrity_protected(struct nfs_client
*clp
)
550 rpc_authflavor_t flavor
= clp
->cl_rpcclient
->cl_auth
->au_flavor
;
552 if (flavor
== RPC_AUTH_GSS_KRB5I
||
553 flavor
== RPC_AUTH_GSS_KRB5P
)
559 static void do_renew_lease(struct nfs_client
*clp
, unsigned long timestamp
)
561 spin_lock(&clp
->cl_lock
);
562 if (time_before(clp
->cl_last_renewal
,timestamp
))
563 clp
->cl_last_renewal
= timestamp
;
564 spin_unlock(&clp
->cl_lock
);
567 static void renew_lease(const struct nfs_server
*server
, unsigned long timestamp
)
569 struct nfs_client
*clp
= server
->nfs_client
;
571 if (!nfs4_has_session(clp
))
572 do_renew_lease(clp
, timestamp
);
575 struct nfs4_call_sync_data
{
576 const struct nfs_server
*seq_server
;
577 struct nfs4_sequence_args
*seq_args
;
578 struct nfs4_sequence_res
*seq_res
;
581 void nfs4_init_sequence(struct nfs4_sequence_args
*args
,
582 struct nfs4_sequence_res
*res
, int cache_reply
)
584 args
->sa_slot
= NULL
;
585 args
->sa_cache_this
= cache_reply
;
586 args
->sa_privileged
= 0;
591 static void nfs4_set_sequence_privileged(struct nfs4_sequence_args
*args
)
593 args
->sa_privileged
= 1;
596 int nfs40_setup_sequence(struct nfs4_slot_table
*tbl
,
597 struct nfs4_sequence_args
*args
,
598 struct nfs4_sequence_res
*res
,
599 struct rpc_task
*task
)
601 struct nfs4_slot
*slot
;
603 /* slot already allocated? */
604 if (res
->sr_slot
!= NULL
)
607 spin_lock(&tbl
->slot_tbl_lock
);
608 if (nfs4_slot_tbl_draining(tbl
) && !args
->sa_privileged
)
611 slot
= nfs4_alloc_slot(tbl
);
613 if (slot
== ERR_PTR(-ENOMEM
))
614 task
->tk_timeout
= HZ
>> 2;
617 spin_unlock(&tbl
->slot_tbl_lock
);
619 args
->sa_slot
= slot
;
623 rpc_call_start(task
);
627 if (args
->sa_privileged
)
628 rpc_sleep_on_priority(&tbl
->slot_tbl_waitq
, task
,
629 NULL
, RPC_PRIORITY_PRIVILEGED
);
631 rpc_sleep_on(&tbl
->slot_tbl_waitq
, task
, NULL
);
632 spin_unlock(&tbl
->slot_tbl_lock
);
635 EXPORT_SYMBOL_GPL(nfs40_setup_sequence
);
637 static void nfs40_sequence_free_slot(struct nfs4_sequence_res
*res
)
639 struct nfs4_slot
*slot
= res
->sr_slot
;
640 struct nfs4_slot_table
*tbl
;
643 spin_lock(&tbl
->slot_tbl_lock
);
644 if (!nfs41_wake_and_assign_slot(tbl
, slot
))
645 nfs4_free_slot(tbl
, slot
);
646 spin_unlock(&tbl
->slot_tbl_lock
);
651 static int nfs40_sequence_done(struct rpc_task
*task
,
652 struct nfs4_sequence_res
*res
)
654 if (res
->sr_slot
!= NULL
)
655 nfs40_sequence_free_slot(res
);
659 #if defined(CONFIG_NFS_V4_1)
661 static void nfs41_sequence_free_slot(struct nfs4_sequence_res
*res
)
663 struct nfs4_session
*session
;
664 struct nfs4_slot_table
*tbl
;
665 struct nfs4_slot
*slot
= res
->sr_slot
;
666 bool send_new_highest_used_slotid
= false;
669 session
= tbl
->session
;
671 /* Bump the slot sequence number */
676 spin_lock(&tbl
->slot_tbl_lock
);
677 /* Be nice to the server: try to ensure that the last transmitted
678 * value for highest_user_slotid <= target_highest_slotid
680 if (tbl
->highest_used_slotid
> tbl
->target_highest_slotid
)
681 send_new_highest_used_slotid
= true;
683 if (nfs41_wake_and_assign_slot(tbl
, slot
)) {
684 send_new_highest_used_slotid
= false;
687 nfs4_free_slot(tbl
, slot
);
689 if (tbl
->highest_used_slotid
!= NFS4_NO_SLOT
)
690 send_new_highest_used_slotid
= false;
692 spin_unlock(&tbl
->slot_tbl_lock
);
694 if (send_new_highest_used_slotid
)
695 nfs41_notify_server(session
->clp
);
696 if (waitqueue_active(&tbl
->slot_waitq
))
697 wake_up_all(&tbl
->slot_waitq
);
700 static int nfs41_sequence_process(struct rpc_task
*task
,
701 struct nfs4_sequence_res
*res
)
703 struct nfs4_session
*session
;
704 struct nfs4_slot
*slot
= res
->sr_slot
;
705 struct nfs_client
*clp
;
706 bool interrupted
= false;
711 /* don't increment the sequence number if the task wasn't sent */
712 if (!RPC_WAS_SENT(task
))
715 session
= slot
->table
->session
;
717 if (slot
->interrupted
) {
718 slot
->interrupted
= 0;
722 trace_nfs4_sequence_done(session
, res
);
723 /* Check the SEQUENCE operation status */
724 switch (res
->sr_status
) {
726 /* Update the slot's sequence and clientid lease timer */
729 do_renew_lease(clp
, res
->sr_timestamp
);
730 /* Check sequence flags */
731 nfs41_handle_sequence_flag_errors(clp
, res
->sr_status_flags
);
732 nfs41_update_target_slotid(slot
->table
, slot
, res
);
736 * sr_status remains 1 if an RPC level error occurred.
737 * The server may or may not have processed the sequence
739 * Mark the slot as having hosted an interrupted RPC call.
741 slot
->interrupted
= 1;
744 /* The server detected a resend of the RPC call and
745 * returned NFS4ERR_DELAY as per Section 2.10.6.2
748 dprintk("%s: slot=%u seq=%u: Operation in progress\n",
753 case -NFS4ERR_BADSLOT
:
755 * The slot id we used was probably retired. Try again
756 * using a different slot id.
759 case -NFS4ERR_SEQ_MISORDERED
:
761 * Was the last operation on this sequence interrupted?
762 * If so, retry after bumping the sequence number.
769 * Could this slot have been previously retired?
770 * If so, then the server may be expecting seq_nr = 1!
772 if (slot
->seq_nr
!= 1) {
777 case -NFS4ERR_SEQ_FALSE_RETRY
:
781 /* Just update the slot sequence no. */
785 /* The session may be reset by one of the error handlers. */
786 dprintk("%s: Error %d free the slot \n", __func__
, res
->sr_status
);
790 if (rpc_restart_call_prepare(task
)) {
791 nfs41_sequence_free_slot(res
);
797 if (!rpc_restart_call(task
))
799 rpc_delay(task
, NFS4_POLL_RETRY_MAX
);
803 int nfs41_sequence_done(struct rpc_task
*task
, struct nfs4_sequence_res
*res
)
805 if (!nfs41_sequence_process(task
, res
))
807 if (res
->sr_slot
!= NULL
)
808 nfs41_sequence_free_slot(res
);
812 EXPORT_SYMBOL_GPL(nfs41_sequence_done
);
814 static int nfs4_sequence_process(struct rpc_task
*task
, struct nfs4_sequence_res
*res
)
816 if (res
->sr_slot
== NULL
)
818 if (res
->sr_slot
->table
->session
!= NULL
)
819 return nfs41_sequence_process(task
, res
);
820 return nfs40_sequence_done(task
, res
);
823 static void nfs4_sequence_free_slot(struct nfs4_sequence_res
*res
)
825 if (res
->sr_slot
!= NULL
) {
826 if (res
->sr_slot
->table
->session
!= NULL
)
827 nfs41_sequence_free_slot(res
);
829 nfs40_sequence_free_slot(res
);
833 int nfs4_sequence_done(struct rpc_task
*task
, struct nfs4_sequence_res
*res
)
835 if (res
->sr_slot
== NULL
)
837 if (!res
->sr_slot
->table
->session
)
838 return nfs40_sequence_done(task
, res
);
839 return nfs41_sequence_done(task
, res
);
841 EXPORT_SYMBOL_GPL(nfs4_sequence_done
);
843 int nfs41_setup_sequence(struct nfs4_session
*session
,
844 struct nfs4_sequence_args
*args
,
845 struct nfs4_sequence_res
*res
,
846 struct rpc_task
*task
)
848 struct nfs4_slot
*slot
;
849 struct nfs4_slot_table
*tbl
;
851 dprintk("--> %s\n", __func__
);
852 /* slot already allocated? */
853 if (res
->sr_slot
!= NULL
)
856 tbl
= &session
->fc_slot_table
;
858 task
->tk_timeout
= 0;
860 spin_lock(&tbl
->slot_tbl_lock
);
861 if (test_bit(NFS4_SLOT_TBL_DRAINING
, &tbl
->slot_tbl_state
) &&
862 !args
->sa_privileged
) {
863 /* The state manager will wait until the slot table is empty */
864 dprintk("%s session is draining\n", __func__
);
868 slot
= nfs4_alloc_slot(tbl
);
870 /* If out of memory, try again in 1/4 second */
871 if (slot
== ERR_PTR(-ENOMEM
))
872 task
->tk_timeout
= HZ
>> 2;
873 dprintk("<-- %s: no free slots\n", __func__
);
876 spin_unlock(&tbl
->slot_tbl_lock
);
878 args
->sa_slot
= slot
;
880 dprintk("<-- %s slotid=%u seqid=%u\n", __func__
,
881 slot
->slot_nr
, slot
->seq_nr
);
884 res
->sr_timestamp
= jiffies
;
885 res
->sr_status_flags
= 0;
887 * sr_status is only set in decode_sequence, and so will remain
888 * set to 1 if an rpc level failure occurs.
891 trace_nfs4_setup_sequence(session
, args
);
893 rpc_call_start(task
);
896 /* Privileged tasks are queued with top priority */
897 if (args
->sa_privileged
)
898 rpc_sleep_on_priority(&tbl
->slot_tbl_waitq
, task
,
899 NULL
, RPC_PRIORITY_PRIVILEGED
);
901 rpc_sleep_on(&tbl
->slot_tbl_waitq
, task
, NULL
);
902 spin_unlock(&tbl
->slot_tbl_lock
);
905 EXPORT_SYMBOL_GPL(nfs41_setup_sequence
);
907 static int nfs4_setup_sequence(const struct nfs_server
*server
,
908 struct nfs4_sequence_args
*args
,
909 struct nfs4_sequence_res
*res
,
910 struct rpc_task
*task
)
912 struct nfs4_session
*session
= nfs4_get_session(server
);
916 return nfs40_setup_sequence(server
->nfs_client
->cl_slot_tbl
,
919 dprintk("--> %s clp %p session %p sr_slot %u\n",
920 __func__
, session
->clp
, session
, res
->sr_slot
?
921 res
->sr_slot
->slot_nr
: NFS4_NO_SLOT
);
923 ret
= nfs41_setup_sequence(session
, args
, res
, task
);
925 dprintk("<-- %s status=%d\n", __func__
, ret
);
929 static void nfs41_call_sync_prepare(struct rpc_task
*task
, void *calldata
)
931 struct nfs4_call_sync_data
*data
= calldata
;
932 struct nfs4_session
*session
= nfs4_get_session(data
->seq_server
);
934 dprintk("--> %s data->seq_server %p\n", __func__
, data
->seq_server
);
936 nfs41_setup_sequence(session
, data
->seq_args
, data
->seq_res
, task
);
939 static void nfs41_call_sync_done(struct rpc_task
*task
, void *calldata
)
941 struct nfs4_call_sync_data
*data
= calldata
;
943 nfs41_sequence_done(task
, data
->seq_res
);
946 static const struct rpc_call_ops nfs41_call_sync_ops
= {
947 .rpc_call_prepare
= nfs41_call_sync_prepare
,
948 .rpc_call_done
= nfs41_call_sync_done
,
951 #else /* !CONFIG_NFS_V4_1 */
953 static int nfs4_setup_sequence(const struct nfs_server
*server
,
954 struct nfs4_sequence_args
*args
,
955 struct nfs4_sequence_res
*res
,
956 struct rpc_task
*task
)
958 return nfs40_setup_sequence(server
->nfs_client
->cl_slot_tbl
,
962 static int nfs4_sequence_process(struct rpc_task
*task
, struct nfs4_sequence_res
*res
)
964 return nfs40_sequence_done(task
, res
);
967 static void nfs4_sequence_free_slot(struct nfs4_sequence_res
*res
)
969 if (res
->sr_slot
!= NULL
)
970 nfs40_sequence_free_slot(res
);
973 int nfs4_sequence_done(struct rpc_task
*task
,
974 struct nfs4_sequence_res
*res
)
976 return nfs40_sequence_done(task
, res
);
978 EXPORT_SYMBOL_GPL(nfs4_sequence_done
);
980 #endif /* !CONFIG_NFS_V4_1 */
982 static void nfs40_call_sync_prepare(struct rpc_task
*task
, void *calldata
)
984 struct nfs4_call_sync_data
*data
= calldata
;
985 nfs4_setup_sequence(data
->seq_server
,
986 data
->seq_args
, data
->seq_res
, task
);
989 static void nfs40_call_sync_done(struct rpc_task
*task
, void *calldata
)
991 struct nfs4_call_sync_data
*data
= calldata
;
992 nfs4_sequence_done(task
, data
->seq_res
);
995 static const struct rpc_call_ops nfs40_call_sync_ops
= {
996 .rpc_call_prepare
= nfs40_call_sync_prepare
,
997 .rpc_call_done
= nfs40_call_sync_done
,
1000 static int nfs4_call_sync_sequence(struct rpc_clnt
*clnt
,
1001 struct nfs_server
*server
,
1002 struct rpc_message
*msg
,
1003 struct nfs4_sequence_args
*args
,
1004 struct nfs4_sequence_res
*res
)
1007 struct rpc_task
*task
;
1008 struct nfs_client
*clp
= server
->nfs_client
;
1009 struct nfs4_call_sync_data data
= {
1010 .seq_server
= server
,
1014 struct rpc_task_setup task_setup
= {
1017 .callback_ops
= clp
->cl_mvops
->call_sync_ops
,
1018 .callback_data
= &data
1021 task
= rpc_run_task(&task_setup
);
1023 ret
= PTR_ERR(task
);
1025 ret
= task
->tk_status
;
1031 int nfs4_call_sync(struct rpc_clnt
*clnt
,
1032 struct nfs_server
*server
,
1033 struct rpc_message
*msg
,
1034 struct nfs4_sequence_args
*args
,
1035 struct nfs4_sequence_res
*res
,
1038 nfs4_init_sequence(args
, res
, cache_reply
);
1039 return nfs4_call_sync_sequence(clnt
, server
, msg
, args
, res
);
1042 static void update_changeattr(struct inode
*dir
, struct nfs4_change_info
*cinfo
)
1044 struct nfs_inode
*nfsi
= NFS_I(dir
);
1046 spin_lock(&dir
->i_lock
);
1047 nfsi
->cache_validity
|= NFS_INO_INVALID_ATTR
|NFS_INO_INVALID_DATA
;
1048 if (!cinfo
->atomic
|| cinfo
->before
!= dir
->i_version
)
1049 nfs_force_lookup_revalidate(dir
);
1050 dir
->i_version
= cinfo
->after
;
1051 nfsi
->attr_gencount
= nfs_inc_attr_generation_counter();
1052 nfs_fscache_invalidate(dir
);
1053 spin_unlock(&dir
->i_lock
);
1056 struct nfs4_opendata
{
1058 struct nfs_openargs o_arg
;
1059 struct nfs_openres o_res
;
1060 struct nfs_open_confirmargs c_arg
;
1061 struct nfs_open_confirmres c_res
;
1062 struct nfs4_string owner_name
;
1063 struct nfs4_string group_name
;
1064 struct nfs4_label
*a_label
;
1065 struct nfs_fattr f_attr
;
1066 struct nfs4_label
*f_label
;
1068 struct dentry
*dentry
;
1069 struct nfs4_state_owner
*owner
;
1070 struct nfs4_state
*state
;
1072 unsigned long timestamp
;
1073 unsigned int rpc_done
: 1;
1074 unsigned int file_created
: 1;
1075 unsigned int is_recover
: 1;
1080 static bool nfs4_clear_cap_atomic_open_v1(struct nfs_server
*server
,
1081 int err
, struct nfs4_exception
*exception
)
1085 if (!(server
->caps
& NFS_CAP_ATOMIC_OPEN_V1
))
1087 server
->caps
&= ~NFS_CAP_ATOMIC_OPEN_V1
;
1088 exception
->retry
= 1;
1093 nfs4_map_atomic_open_share(struct nfs_server
*server
,
1094 fmode_t fmode
, int openflags
)
1098 switch (fmode
& (FMODE_READ
| FMODE_WRITE
)) {
1100 res
= NFS4_SHARE_ACCESS_READ
;
1103 res
= NFS4_SHARE_ACCESS_WRITE
;
1105 case FMODE_READ
|FMODE_WRITE
:
1106 res
= NFS4_SHARE_ACCESS_BOTH
;
1108 if (!(server
->caps
& NFS_CAP_ATOMIC_OPEN_V1
))
1110 /* Want no delegation if we're using O_DIRECT */
1111 if (openflags
& O_DIRECT
)
1112 res
|= NFS4_SHARE_WANT_NO_DELEG
;
1117 static enum open_claim_type4
1118 nfs4_map_atomic_open_claim(struct nfs_server
*server
,
1119 enum open_claim_type4 claim
)
1121 if (server
->caps
& NFS_CAP_ATOMIC_OPEN_V1
)
1126 case NFS4_OPEN_CLAIM_FH
:
1127 return NFS4_OPEN_CLAIM_NULL
;
1128 case NFS4_OPEN_CLAIM_DELEG_CUR_FH
:
1129 return NFS4_OPEN_CLAIM_DELEGATE_CUR
;
1130 case NFS4_OPEN_CLAIM_DELEG_PREV_FH
:
1131 return NFS4_OPEN_CLAIM_DELEGATE_PREV
;
1135 static void nfs4_init_opendata_res(struct nfs4_opendata
*p
)
1137 p
->o_res
.f_attr
= &p
->f_attr
;
1138 p
->o_res
.f_label
= p
->f_label
;
1139 p
->o_res
.seqid
= p
->o_arg
.seqid
;
1140 p
->c_res
.seqid
= p
->c_arg
.seqid
;
1141 p
->o_res
.server
= p
->o_arg
.server
;
1142 p
->o_res
.access_request
= p
->o_arg
.access
;
1143 nfs_fattr_init(&p
->f_attr
);
1144 nfs_fattr_init_names(&p
->f_attr
, &p
->owner_name
, &p
->group_name
);
1147 static struct nfs4_opendata
*nfs4_opendata_alloc(struct dentry
*dentry
,
1148 struct nfs4_state_owner
*sp
, fmode_t fmode
, int flags
,
1149 const struct iattr
*attrs
,
1150 struct nfs4_label
*label
,
1151 enum open_claim_type4 claim
,
1154 struct dentry
*parent
= dget_parent(dentry
);
1155 struct inode
*dir
= d_inode(parent
);
1156 struct nfs_server
*server
= NFS_SERVER(dir
);
1157 struct nfs_seqid
*(*alloc_seqid
)(struct nfs_seqid_counter
*, gfp_t
);
1158 struct nfs4_opendata
*p
;
1160 p
= kzalloc(sizeof(*p
), gfp_mask
);
1164 p
->f_label
= nfs4_label_alloc(server
, gfp_mask
);
1165 if (IS_ERR(p
->f_label
))
1168 p
->a_label
= nfs4_label_alloc(server
, gfp_mask
);
1169 if (IS_ERR(p
->a_label
))
1172 alloc_seqid
= server
->nfs_client
->cl_mvops
->alloc_seqid
;
1173 p
->o_arg
.seqid
= alloc_seqid(&sp
->so_seqid
, gfp_mask
);
1174 if (IS_ERR(p
->o_arg
.seqid
))
1175 goto err_free_label
;
1176 nfs_sb_active(dentry
->d_sb
);
1177 p
->dentry
= dget(dentry
);
1180 atomic_inc(&sp
->so_count
);
1181 p
->o_arg
.open_flags
= flags
;
1182 p
->o_arg
.fmode
= fmode
& (FMODE_READ
|FMODE_WRITE
);
1183 p
->o_arg
.share_access
= nfs4_map_atomic_open_share(server
,
1185 /* don't put an ACCESS op in OPEN compound if O_EXCL, because ACCESS
1186 * will return permission denied for all bits until close */
1187 if (!(flags
& O_EXCL
)) {
1188 /* ask server to check for all possible rights as results
1190 p
->o_arg
.access
= NFS4_ACCESS_READ
| NFS4_ACCESS_MODIFY
|
1191 NFS4_ACCESS_EXTEND
| NFS4_ACCESS_EXECUTE
;
1193 p
->o_arg
.clientid
= server
->nfs_client
->cl_clientid
;
1194 p
->o_arg
.id
.create_time
= ktime_to_ns(sp
->so_seqid
.create_time
);
1195 p
->o_arg
.id
.uniquifier
= sp
->so_seqid
.owner_id
;
1196 p
->o_arg
.name
= &dentry
->d_name
;
1197 p
->o_arg
.server
= server
;
1198 p
->o_arg
.bitmask
= nfs4_bitmask(server
, label
);
1199 p
->o_arg
.open_bitmap
= &nfs4_fattr_bitmap
[0];
1200 p
->o_arg
.label
= nfs4_label_copy(p
->a_label
, label
);
1201 p
->o_arg
.claim
= nfs4_map_atomic_open_claim(server
, claim
);
1202 switch (p
->o_arg
.claim
) {
1203 case NFS4_OPEN_CLAIM_NULL
:
1204 case NFS4_OPEN_CLAIM_DELEGATE_CUR
:
1205 case NFS4_OPEN_CLAIM_DELEGATE_PREV
:
1206 p
->o_arg
.fh
= NFS_FH(dir
);
1208 case NFS4_OPEN_CLAIM_PREVIOUS
:
1209 case NFS4_OPEN_CLAIM_FH
:
1210 case NFS4_OPEN_CLAIM_DELEG_CUR_FH
:
1211 case NFS4_OPEN_CLAIM_DELEG_PREV_FH
:
1212 p
->o_arg
.fh
= NFS_FH(d_inode(dentry
));
1214 if (attrs
!= NULL
&& attrs
->ia_valid
!= 0) {
1217 p
->o_arg
.u
.attrs
= &p
->attrs
;
1218 memcpy(&p
->attrs
, attrs
, sizeof(p
->attrs
));
1221 verf
[1] = current
->pid
;
1222 memcpy(p
->o_arg
.u
.verifier
.data
, verf
,
1223 sizeof(p
->o_arg
.u
.verifier
.data
));
1225 p
->c_arg
.fh
= &p
->o_res
.fh
;
1226 p
->c_arg
.stateid
= &p
->o_res
.stateid
;
1227 p
->c_arg
.seqid
= p
->o_arg
.seqid
;
1228 nfs4_init_opendata_res(p
);
1229 kref_init(&p
->kref
);
1233 nfs4_label_free(p
->a_label
);
1235 nfs4_label_free(p
->f_label
);
1243 static void nfs4_opendata_free(struct kref
*kref
)
1245 struct nfs4_opendata
*p
= container_of(kref
,
1246 struct nfs4_opendata
, kref
);
1247 struct super_block
*sb
= p
->dentry
->d_sb
;
1249 nfs_free_seqid(p
->o_arg
.seqid
);
1250 nfs4_sequence_free_slot(&p
->o_res
.seq_res
);
1251 if (p
->state
!= NULL
)
1252 nfs4_put_open_state(p
->state
);
1253 nfs4_put_state_owner(p
->owner
);
1255 nfs4_label_free(p
->a_label
);
1256 nfs4_label_free(p
->f_label
);
1260 nfs_sb_deactive(sb
);
1261 nfs_fattr_free_names(&p
->f_attr
);
1262 kfree(p
->f_attr
.mdsthreshold
);
1266 static void nfs4_opendata_put(struct nfs4_opendata
*p
)
1269 kref_put(&p
->kref
, nfs4_opendata_free
);
1272 static int nfs4_wait_for_completion_rpc_task(struct rpc_task
*task
)
1276 ret
= rpc_wait_for_completion_task(task
);
1280 static bool nfs4_mode_match_open_stateid(struct nfs4_state
*state
,
1283 switch(fmode
& (FMODE_READ
|FMODE_WRITE
)) {
1284 case FMODE_READ
|FMODE_WRITE
:
1285 return state
->n_rdwr
!= 0;
1287 return state
->n_wronly
!= 0;
1289 return state
->n_rdonly
!= 0;
1295 static int can_open_cached(struct nfs4_state
*state
, fmode_t mode
, int open_mode
)
1299 if (open_mode
& (O_EXCL
|O_TRUNC
))
1301 switch (mode
& (FMODE_READ
|FMODE_WRITE
)) {
1303 ret
|= test_bit(NFS_O_RDONLY_STATE
, &state
->flags
) != 0
1304 && state
->n_rdonly
!= 0;
1307 ret
|= test_bit(NFS_O_WRONLY_STATE
, &state
->flags
) != 0
1308 && state
->n_wronly
!= 0;
1310 case FMODE_READ
|FMODE_WRITE
:
1311 ret
|= test_bit(NFS_O_RDWR_STATE
, &state
->flags
) != 0
1312 && state
->n_rdwr
!= 0;
1318 static int can_open_delegated(struct nfs_delegation
*delegation
, fmode_t fmode
,
1319 enum open_claim_type4 claim
)
1321 if (delegation
== NULL
)
1323 if ((delegation
->type
& fmode
) != fmode
)
1325 if (test_bit(NFS_DELEGATION_RETURNING
, &delegation
->flags
))
1328 case NFS4_OPEN_CLAIM_NULL
:
1329 case NFS4_OPEN_CLAIM_FH
:
1331 case NFS4_OPEN_CLAIM_PREVIOUS
:
1332 if (!test_bit(NFS_DELEGATION_NEED_RECLAIM
, &delegation
->flags
))
1337 nfs_mark_delegation_referenced(delegation
);
1341 static void update_open_stateflags(struct nfs4_state
*state
, fmode_t fmode
)
1350 case FMODE_READ
|FMODE_WRITE
:
1353 nfs4_state_set_mode_locked(state
, state
->state
| fmode
);
1356 static void nfs_test_and_clear_all_open_stateid(struct nfs4_state
*state
)
1358 struct nfs_client
*clp
= state
->owner
->so_server
->nfs_client
;
1359 bool need_recover
= false;
1361 if (test_and_clear_bit(NFS_O_RDONLY_STATE
, &state
->flags
) && state
->n_rdonly
)
1362 need_recover
= true;
1363 if (test_and_clear_bit(NFS_O_WRONLY_STATE
, &state
->flags
) && state
->n_wronly
)
1364 need_recover
= true;
1365 if (test_and_clear_bit(NFS_O_RDWR_STATE
, &state
->flags
) && state
->n_rdwr
)
1366 need_recover
= true;
1368 nfs4_state_mark_reclaim_nograce(clp
, state
);
1371 static bool nfs_need_update_open_stateid(struct nfs4_state
*state
,
1372 nfs4_stateid
*stateid
)
1374 if (test_and_set_bit(NFS_OPEN_STATE
, &state
->flags
) == 0)
1376 if (!nfs4_stateid_match_other(stateid
, &state
->open_stateid
)) {
1377 nfs_test_and_clear_all_open_stateid(state
);
1380 if (nfs4_stateid_is_newer(stateid
, &state
->open_stateid
))
1385 static void nfs_resync_open_stateid_locked(struct nfs4_state
*state
)
1387 if (!(state
->n_wronly
|| state
->n_rdonly
|| state
->n_rdwr
))
1389 if (state
->n_wronly
)
1390 set_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
1391 if (state
->n_rdonly
)
1392 set_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
1394 set_bit(NFS_O_RDWR_STATE
, &state
->flags
);
1395 set_bit(NFS_OPEN_STATE
, &state
->flags
);
1398 static void nfs_clear_open_stateid_locked(struct nfs4_state
*state
,
1399 nfs4_stateid
*arg_stateid
,
1400 nfs4_stateid
*stateid
, fmode_t fmode
)
1402 clear_bit(NFS_O_RDWR_STATE
, &state
->flags
);
1403 switch (fmode
& (FMODE_READ
|FMODE_WRITE
)) {
1405 clear_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
1408 clear_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
1411 clear_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
1412 clear_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
1413 clear_bit(NFS_OPEN_STATE
, &state
->flags
);
1415 if (stateid
== NULL
)
1417 /* Handle races with OPEN */
1418 if (!nfs4_stateid_match_other(arg_stateid
, &state
->open_stateid
) ||
1419 (nfs4_stateid_match_other(stateid
, &state
->open_stateid
) &&
1420 !nfs4_stateid_is_newer(stateid
, &state
->open_stateid
))) {
1421 nfs_resync_open_stateid_locked(state
);
1424 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) == 0)
1425 nfs4_stateid_copy(&state
->stateid
, stateid
);
1426 nfs4_stateid_copy(&state
->open_stateid
, stateid
);
1429 static void nfs_clear_open_stateid(struct nfs4_state
*state
,
1430 nfs4_stateid
*arg_stateid
,
1431 nfs4_stateid
*stateid
, fmode_t fmode
)
1433 write_seqlock(&state
->seqlock
);
1434 nfs_clear_open_stateid_locked(state
, arg_stateid
, stateid
, fmode
);
1435 write_sequnlock(&state
->seqlock
);
1436 if (test_bit(NFS_STATE_RECLAIM_NOGRACE
, &state
->flags
))
1437 nfs4_schedule_state_manager(state
->owner
->so_server
->nfs_client
);
1440 static void nfs_set_open_stateid_locked(struct nfs4_state
*state
, nfs4_stateid
*stateid
, fmode_t fmode
)
1444 set_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
1447 set_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
1449 case FMODE_READ
|FMODE_WRITE
:
1450 set_bit(NFS_O_RDWR_STATE
, &state
->flags
);
1452 if (!nfs_need_update_open_stateid(state
, stateid
))
1454 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) == 0)
1455 nfs4_stateid_copy(&state
->stateid
, stateid
);
1456 nfs4_stateid_copy(&state
->open_stateid
, stateid
);
1459 static void __update_open_stateid(struct nfs4_state
*state
, nfs4_stateid
*open_stateid
, const nfs4_stateid
*deleg_stateid
, fmode_t fmode
)
1462 * Protect the call to nfs4_state_set_mode_locked and
1463 * serialise the stateid update
1465 spin_lock(&state
->owner
->so_lock
);
1466 write_seqlock(&state
->seqlock
);
1467 if (deleg_stateid
!= NULL
) {
1468 nfs4_stateid_copy(&state
->stateid
, deleg_stateid
);
1469 set_bit(NFS_DELEGATED_STATE
, &state
->flags
);
1471 if (open_stateid
!= NULL
)
1472 nfs_set_open_stateid_locked(state
, open_stateid
, fmode
);
1473 write_sequnlock(&state
->seqlock
);
1474 update_open_stateflags(state
, fmode
);
1475 spin_unlock(&state
->owner
->so_lock
);
1478 static int update_open_stateid(struct nfs4_state
*state
, nfs4_stateid
*open_stateid
, nfs4_stateid
*delegation
, fmode_t fmode
)
1480 struct nfs_inode
*nfsi
= NFS_I(state
->inode
);
1481 struct nfs_delegation
*deleg_cur
;
1484 fmode
&= (FMODE_READ
|FMODE_WRITE
);
1487 deleg_cur
= rcu_dereference(nfsi
->delegation
);
1488 if (deleg_cur
== NULL
)
1491 spin_lock(&deleg_cur
->lock
);
1492 if (rcu_dereference(nfsi
->delegation
) != deleg_cur
||
1493 test_bit(NFS_DELEGATION_RETURNING
, &deleg_cur
->flags
) ||
1494 (deleg_cur
->type
& fmode
) != fmode
)
1495 goto no_delegation_unlock
;
1497 if (delegation
== NULL
)
1498 delegation
= &deleg_cur
->stateid
;
1499 else if (!nfs4_stateid_match(&deleg_cur
->stateid
, delegation
))
1500 goto no_delegation_unlock
;
1502 nfs_mark_delegation_referenced(deleg_cur
);
1503 __update_open_stateid(state
, open_stateid
, &deleg_cur
->stateid
, fmode
);
1505 no_delegation_unlock
:
1506 spin_unlock(&deleg_cur
->lock
);
1510 if (!ret
&& open_stateid
!= NULL
) {
1511 __update_open_stateid(state
, open_stateid
, NULL
, fmode
);
1514 if (test_bit(NFS_STATE_RECLAIM_NOGRACE
, &state
->flags
))
1515 nfs4_schedule_state_manager(state
->owner
->so_server
->nfs_client
);
1520 static bool nfs4_update_lock_stateid(struct nfs4_lock_state
*lsp
,
1521 const nfs4_stateid
*stateid
)
1523 struct nfs4_state
*state
= lsp
->ls_state
;
1526 spin_lock(&state
->state_lock
);
1527 if (!nfs4_stateid_match_other(stateid
, &lsp
->ls_stateid
))
1529 if (!nfs4_stateid_is_newer(stateid
, &lsp
->ls_stateid
))
1531 nfs4_stateid_copy(&lsp
->ls_stateid
, stateid
);
1534 spin_unlock(&state
->state_lock
);
1538 static void nfs4_return_incompatible_delegation(struct inode
*inode
, fmode_t fmode
)
1540 struct nfs_delegation
*delegation
;
1543 delegation
= rcu_dereference(NFS_I(inode
)->delegation
);
1544 if (delegation
== NULL
|| (delegation
->type
& fmode
) == fmode
) {
1549 nfs4_inode_return_delegation(inode
);
1552 static struct nfs4_state
*nfs4_try_open_cached(struct nfs4_opendata
*opendata
)
1554 struct nfs4_state
*state
= opendata
->state
;
1555 struct nfs_inode
*nfsi
= NFS_I(state
->inode
);
1556 struct nfs_delegation
*delegation
;
1557 int open_mode
= opendata
->o_arg
.open_flags
;
1558 fmode_t fmode
= opendata
->o_arg
.fmode
;
1559 enum open_claim_type4 claim
= opendata
->o_arg
.claim
;
1560 nfs4_stateid stateid
;
1564 spin_lock(&state
->owner
->so_lock
);
1565 if (can_open_cached(state
, fmode
, open_mode
)) {
1566 update_open_stateflags(state
, fmode
);
1567 spin_unlock(&state
->owner
->so_lock
);
1568 goto out_return_state
;
1570 spin_unlock(&state
->owner
->so_lock
);
1572 delegation
= rcu_dereference(nfsi
->delegation
);
1573 if (!can_open_delegated(delegation
, fmode
, claim
)) {
1577 /* Save the delegation */
1578 nfs4_stateid_copy(&stateid
, &delegation
->stateid
);
1580 nfs_release_seqid(opendata
->o_arg
.seqid
);
1581 if (!opendata
->is_recover
) {
1582 ret
= nfs_may_open(state
->inode
, state
->owner
->so_cred
, open_mode
);
1588 /* Try to update the stateid using the delegation */
1589 if (update_open_stateid(state
, NULL
, &stateid
, fmode
))
1590 goto out_return_state
;
1593 return ERR_PTR(ret
);
1595 atomic_inc(&state
->count
);
1600 nfs4_opendata_check_deleg(struct nfs4_opendata
*data
, struct nfs4_state
*state
)
1602 struct nfs_client
*clp
= NFS_SERVER(state
->inode
)->nfs_client
;
1603 struct nfs_delegation
*delegation
;
1604 int delegation_flags
= 0;
1607 delegation
= rcu_dereference(NFS_I(state
->inode
)->delegation
);
1609 delegation_flags
= delegation
->flags
;
1611 switch (data
->o_arg
.claim
) {
1614 case NFS4_OPEN_CLAIM_DELEGATE_CUR
:
1615 case NFS4_OPEN_CLAIM_DELEG_CUR_FH
:
1616 pr_err_ratelimited("NFS: Broken NFSv4 server %s is "
1617 "returning a delegation for "
1618 "OPEN(CLAIM_DELEGATE_CUR)\n",
1622 if ((delegation_flags
& 1UL<<NFS_DELEGATION_NEED_RECLAIM
) == 0)
1623 nfs_inode_set_delegation(state
->inode
,
1624 data
->owner
->so_cred
,
1627 nfs_inode_reclaim_delegation(state
->inode
,
1628 data
->owner
->so_cred
,
1633 * Check the inode attributes against the CLAIM_PREVIOUS returned attributes
1634 * and update the nfs4_state.
1636 static struct nfs4_state
*
1637 _nfs4_opendata_reclaim_to_nfs4_state(struct nfs4_opendata
*data
)
1639 struct inode
*inode
= data
->state
->inode
;
1640 struct nfs4_state
*state
= data
->state
;
1643 if (!data
->rpc_done
) {
1644 if (data
->rpc_status
) {
1645 ret
= data
->rpc_status
;
1648 /* cached opens have already been processed */
1652 ret
= nfs_refresh_inode(inode
, &data
->f_attr
);
1656 if (data
->o_res
.delegation_type
!= 0)
1657 nfs4_opendata_check_deleg(data
, state
);
1659 update_open_stateid(state
, &data
->o_res
.stateid
, NULL
,
1661 atomic_inc(&state
->count
);
1665 return ERR_PTR(ret
);
1669 static struct nfs4_state
*
1670 _nfs4_opendata_to_nfs4_state(struct nfs4_opendata
*data
)
1672 struct inode
*inode
;
1673 struct nfs4_state
*state
= NULL
;
1676 if (!data
->rpc_done
) {
1677 state
= nfs4_try_open_cached(data
);
1678 trace_nfs4_cached_open(data
->state
);
1683 if (!(data
->f_attr
.valid
& NFS_ATTR_FATTR
))
1685 inode
= nfs_fhget(data
->dir
->d_sb
, &data
->o_res
.fh
, &data
->f_attr
, data
->f_label
);
1686 ret
= PTR_ERR(inode
);
1690 state
= nfs4_get_open_state(inode
, data
->owner
);
1693 if (data
->o_res
.delegation_type
!= 0)
1694 nfs4_opendata_check_deleg(data
, state
);
1695 update_open_stateid(state
, &data
->o_res
.stateid
, NULL
,
1699 nfs_release_seqid(data
->o_arg
.seqid
);
1704 return ERR_PTR(ret
);
1707 static struct nfs4_state
*
1708 nfs4_opendata_to_nfs4_state(struct nfs4_opendata
*data
)
1710 struct nfs4_state
*ret
;
1712 if (data
->o_arg
.claim
== NFS4_OPEN_CLAIM_PREVIOUS
)
1713 ret
=_nfs4_opendata_reclaim_to_nfs4_state(data
);
1715 ret
= _nfs4_opendata_to_nfs4_state(data
);
1716 nfs4_sequence_free_slot(&data
->o_res
.seq_res
);
1720 static struct nfs_open_context
*nfs4_state_find_open_context(struct nfs4_state
*state
)
1722 struct nfs_inode
*nfsi
= NFS_I(state
->inode
);
1723 struct nfs_open_context
*ctx
;
1725 spin_lock(&state
->inode
->i_lock
);
1726 list_for_each_entry(ctx
, &nfsi
->open_files
, list
) {
1727 if (ctx
->state
!= state
)
1729 get_nfs_open_context(ctx
);
1730 spin_unlock(&state
->inode
->i_lock
);
1733 spin_unlock(&state
->inode
->i_lock
);
1734 return ERR_PTR(-ENOENT
);
1737 static struct nfs4_opendata
*nfs4_open_recoverdata_alloc(struct nfs_open_context
*ctx
,
1738 struct nfs4_state
*state
, enum open_claim_type4 claim
)
1740 struct nfs4_opendata
*opendata
;
1742 opendata
= nfs4_opendata_alloc(ctx
->dentry
, state
->owner
, 0, 0,
1743 NULL
, NULL
, claim
, GFP_NOFS
);
1744 if (opendata
== NULL
)
1745 return ERR_PTR(-ENOMEM
);
1746 opendata
->state
= state
;
1747 atomic_inc(&state
->count
);
1751 static int nfs4_open_recover_helper(struct nfs4_opendata
*opendata
,
1754 struct nfs4_state
*newstate
;
1757 if (!nfs4_mode_match_open_stateid(opendata
->state
, fmode
))
1759 opendata
->o_arg
.open_flags
= 0;
1760 opendata
->o_arg
.fmode
= fmode
;
1761 opendata
->o_arg
.share_access
= nfs4_map_atomic_open_share(
1762 NFS_SB(opendata
->dentry
->d_sb
),
1764 memset(&opendata
->o_res
, 0, sizeof(opendata
->o_res
));
1765 memset(&opendata
->c_res
, 0, sizeof(opendata
->c_res
));
1766 nfs4_init_opendata_res(opendata
);
1767 ret
= _nfs4_recover_proc_open(opendata
);
1770 newstate
= nfs4_opendata_to_nfs4_state(opendata
);
1771 if (IS_ERR(newstate
))
1772 return PTR_ERR(newstate
);
1773 if (newstate
!= opendata
->state
)
1775 nfs4_close_state(newstate
, fmode
);
1779 static int nfs4_open_recover(struct nfs4_opendata
*opendata
, struct nfs4_state
*state
)
1783 /* Don't trigger recovery in nfs_test_and_clear_all_open_stateid */
1784 clear_bit(NFS_O_RDWR_STATE
, &state
->flags
);
1785 clear_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
1786 clear_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
1787 /* memory barrier prior to reading state->n_* */
1788 clear_bit(NFS_DELEGATED_STATE
, &state
->flags
);
1789 clear_bit(NFS_OPEN_STATE
, &state
->flags
);
1791 ret
= nfs4_open_recover_helper(opendata
, FMODE_READ
|FMODE_WRITE
);
1794 ret
= nfs4_open_recover_helper(opendata
, FMODE_WRITE
);
1797 ret
= nfs4_open_recover_helper(opendata
, FMODE_READ
);
1801 * We may have performed cached opens for all three recoveries.
1802 * Check if we need to update the current stateid.
1804 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) == 0 &&
1805 !nfs4_stateid_match(&state
->stateid
, &state
->open_stateid
)) {
1806 write_seqlock(&state
->seqlock
);
1807 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) == 0)
1808 nfs4_stateid_copy(&state
->stateid
, &state
->open_stateid
);
1809 write_sequnlock(&state
->seqlock
);
1816 * reclaim state on the server after a reboot.
1818 static int _nfs4_do_open_reclaim(struct nfs_open_context
*ctx
, struct nfs4_state
*state
)
1820 struct nfs_delegation
*delegation
;
1821 struct nfs4_opendata
*opendata
;
1822 fmode_t delegation_type
= 0;
1825 opendata
= nfs4_open_recoverdata_alloc(ctx
, state
,
1826 NFS4_OPEN_CLAIM_PREVIOUS
);
1827 if (IS_ERR(opendata
))
1828 return PTR_ERR(opendata
);
1830 delegation
= rcu_dereference(NFS_I(state
->inode
)->delegation
);
1831 if (delegation
!= NULL
&& test_bit(NFS_DELEGATION_NEED_RECLAIM
, &delegation
->flags
) != 0)
1832 delegation_type
= delegation
->type
;
1834 opendata
->o_arg
.u
.delegation_type
= delegation_type
;
1835 status
= nfs4_open_recover(opendata
, state
);
1836 nfs4_opendata_put(opendata
);
1840 static int nfs4_do_open_reclaim(struct nfs_open_context
*ctx
, struct nfs4_state
*state
)
1842 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
1843 struct nfs4_exception exception
= { };
1846 err
= _nfs4_do_open_reclaim(ctx
, state
);
1847 trace_nfs4_open_reclaim(ctx
, 0, err
);
1848 if (nfs4_clear_cap_atomic_open_v1(server
, err
, &exception
))
1850 if (err
!= -NFS4ERR_DELAY
)
1852 nfs4_handle_exception(server
, err
, &exception
);
1853 } while (exception
.retry
);
1857 static int nfs4_open_reclaim(struct nfs4_state_owner
*sp
, struct nfs4_state
*state
)
1859 struct nfs_open_context
*ctx
;
1862 ctx
= nfs4_state_find_open_context(state
);
1865 ret
= nfs4_do_open_reclaim(ctx
, state
);
1866 put_nfs_open_context(ctx
);
1870 static int nfs4_handle_delegation_recall_error(struct nfs_server
*server
, struct nfs4_state
*state
, const nfs4_stateid
*stateid
, int err
)
1874 printk(KERN_ERR
"NFS: %s: unhandled error "
1875 "%d.\n", __func__
, err
);
1881 case -NFS4ERR_BADSESSION
:
1882 case -NFS4ERR_BADSLOT
:
1883 case -NFS4ERR_BAD_HIGH_SLOT
:
1884 case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION
:
1885 case -NFS4ERR_DEADSESSION
:
1886 set_bit(NFS_DELEGATED_STATE
, &state
->flags
);
1887 nfs4_schedule_session_recovery(server
->nfs_client
->cl_session
, err
);
1889 case -NFS4ERR_STALE_CLIENTID
:
1890 case -NFS4ERR_STALE_STATEID
:
1891 set_bit(NFS_DELEGATED_STATE
, &state
->flags
);
1892 case -NFS4ERR_EXPIRED
:
1893 /* Don't recall a delegation if it was lost */
1894 nfs4_schedule_lease_recovery(server
->nfs_client
);
1896 case -NFS4ERR_MOVED
:
1897 nfs4_schedule_migration_recovery(server
);
1899 case -NFS4ERR_LEASE_MOVED
:
1900 nfs4_schedule_lease_moved_recovery(server
->nfs_client
);
1902 case -NFS4ERR_DELEG_REVOKED
:
1903 case -NFS4ERR_ADMIN_REVOKED
:
1904 case -NFS4ERR_BAD_STATEID
:
1905 case -NFS4ERR_OPENMODE
:
1906 nfs_inode_find_state_and_recover(state
->inode
,
1908 nfs4_schedule_stateid_recovery(server
, state
);
1910 case -NFS4ERR_DELAY
:
1911 case -NFS4ERR_GRACE
:
1912 set_bit(NFS_DELEGATED_STATE
, &state
->flags
);
1916 case -NFS4ERR_DENIED
:
1917 /* kill_proc(fl->fl_pid, SIGLOST, 1); */
1923 int nfs4_open_delegation_recall(struct nfs_open_context
*ctx
,
1924 struct nfs4_state
*state
, const nfs4_stateid
*stateid
,
1927 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
1928 struct nfs4_opendata
*opendata
;
1931 opendata
= nfs4_open_recoverdata_alloc(ctx
, state
,
1932 NFS4_OPEN_CLAIM_DELEG_CUR_FH
);
1933 if (IS_ERR(opendata
))
1934 return PTR_ERR(opendata
);
1935 nfs4_stateid_copy(&opendata
->o_arg
.u
.delegation
, stateid
);
1936 write_seqlock(&state
->seqlock
);
1937 nfs4_stateid_copy(&state
->stateid
, &state
->open_stateid
);
1938 write_sequnlock(&state
->seqlock
);
1939 clear_bit(NFS_DELEGATED_STATE
, &state
->flags
);
1940 switch (type
& (FMODE_READ
|FMODE_WRITE
)) {
1941 case FMODE_READ
|FMODE_WRITE
:
1943 err
= nfs4_open_recover_helper(opendata
, FMODE_READ
|FMODE_WRITE
);
1946 err
= nfs4_open_recover_helper(opendata
, FMODE_WRITE
);
1950 err
= nfs4_open_recover_helper(opendata
, FMODE_READ
);
1952 nfs4_opendata_put(opendata
);
1953 return nfs4_handle_delegation_recall_error(server
, state
, stateid
, err
);
1956 static void nfs4_open_confirm_prepare(struct rpc_task
*task
, void *calldata
)
1958 struct nfs4_opendata
*data
= calldata
;
1960 nfs40_setup_sequence(data
->o_arg
.server
->nfs_client
->cl_slot_tbl
,
1961 &data
->c_arg
.seq_args
, &data
->c_res
.seq_res
, task
);
1964 static void nfs4_open_confirm_done(struct rpc_task
*task
, void *calldata
)
1966 struct nfs4_opendata
*data
= calldata
;
1968 nfs40_sequence_done(task
, &data
->c_res
.seq_res
);
1970 data
->rpc_status
= task
->tk_status
;
1971 if (data
->rpc_status
== 0) {
1972 nfs4_stateid_copy(&data
->o_res
.stateid
, &data
->c_res
.stateid
);
1973 nfs_confirm_seqid(&data
->owner
->so_seqid
, 0);
1974 renew_lease(data
->o_res
.server
, data
->timestamp
);
1979 static void nfs4_open_confirm_release(void *calldata
)
1981 struct nfs4_opendata
*data
= calldata
;
1982 struct nfs4_state
*state
= NULL
;
1984 /* If this request hasn't been cancelled, do nothing */
1985 if (data
->cancelled
== 0)
1987 /* In case of error, no cleanup! */
1988 if (!data
->rpc_done
)
1990 state
= nfs4_opendata_to_nfs4_state(data
);
1992 nfs4_close_state(state
, data
->o_arg
.fmode
);
1994 nfs4_opendata_put(data
);
1997 static const struct rpc_call_ops nfs4_open_confirm_ops
= {
1998 .rpc_call_prepare
= nfs4_open_confirm_prepare
,
1999 .rpc_call_done
= nfs4_open_confirm_done
,
2000 .rpc_release
= nfs4_open_confirm_release
,
2004 * Note: On error, nfs4_proc_open_confirm will free the struct nfs4_opendata
2006 static int _nfs4_proc_open_confirm(struct nfs4_opendata
*data
)
2008 struct nfs_server
*server
= NFS_SERVER(d_inode(data
->dir
));
2009 struct rpc_task
*task
;
2010 struct rpc_message msg
= {
2011 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_OPEN_CONFIRM
],
2012 .rpc_argp
= &data
->c_arg
,
2013 .rpc_resp
= &data
->c_res
,
2014 .rpc_cred
= data
->owner
->so_cred
,
2016 struct rpc_task_setup task_setup_data
= {
2017 .rpc_client
= server
->client
,
2018 .rpc_message
= &msg
,
2019 .callback_ops
= &nfs4_open_confirm_ops
,
2020 .callback_data
= data
,
2021 .workqueue
= nfsiod_workqueue
,
2022 .flags
= RPC_TASK_ASYNC
,
2026 nfs4_init_sequence(&data
->c_arg
.seq_args
, &data
->c_res
.seq_res
, 1);
2027 kref_get(&data
->kref
);
2029 data
->rpc_status
= 0;
2030 data
->timestamp
= jiffies
;
2031 if (data
->is_recover
)
2032 nfs4_set_sequence_privileged(&data
->c_arg
.seq_args
);
2033 task
= rpc_run_task(&task_setup_data
);
2035 return PTR_ERR(task
);
2036 status
= nfs4_wait_for_completion_rpc_task(task
);
2038 data
->cancelled
= 1;
2041 status
= data
->rpc_status
;
2046 static void nfs4_open_prepare(struct rpc_task
*task
, void *calldata
)
2048 struct nfs4_opendata
*data
= calldata
;
2049 struct nfs4_state_owner
*sp
= data
->owner
;
2050 struct nfs_client
*clp
= sp
->so_server
->nfs_client
;
2051 enum open_claim_type4 claim
= data
->o_arg
.claim
;
2053 if (nfs_wait_on_sequence(data
->o_arg
.seqid
, task
) != 0)
2056 * Check if we still need to send an OPEN call, or if we can use
2057 * a delegation instead.
2059 if (data
->state
!= NULL
) {
2060 struct nfs_delegation
*delegation
;
2062 if (can_open_cached(data
->state
, data
->o_arg
.fmode
, data
->o_arg
.open_flags
))
2065 delegation
= rcu_dereference(NFS_I(data
->state
->inode
)->delegation
);
2066 if (can_open_delegated(delegation
, data
->o_arg
.fmode
, claim
))
2067 goto unlock_no_action
;
2070 /* Update client id. */
2071 data
->o_arg
.clientid
= clp
->cl_clientid
;
2075 case NFS4_OPEN_CLAIM_PREVIOUS
:
2076 case NFS4_OPEN_CLAIM_DELEG_CUR_FH
:
2077 case NFS4_OPEN_CLAIM_DELEG_PREV_FH
:
2078 data
->o_arg
.open_bitmap
= &nfs4_open_noattr_bitmap
[0];
2079 case NFS4_OPEN_CLAIM_FH
:
2080 task
->tk_msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_OPEN_NOATTR
];
2081 nfs_copy_fh(&data
->o_res
.fh
, data
->o_arg
.fh
);
2083 data
->timestamp
= jiffies
;
2084 if (nfs4_setup_sequence(data
->o_arg
.server
,
2085 &data
->o_arg
.seq_args
,
2086 &data
->o_res
.seq_res
,
2088 nfs_release_seqid(data
->o_arg
.seqid
);
2090 /* Set the create mode (note dependency on the session type) */
2091 data
->o_arg
.createmode
= NFS4_CREATE_UNCHECKED
;
2092 if (data
->o_arg
.open_flags
& O_EXCL
) {
2093 data
->o_arg
.createmode
= NFS4_CREATE_EXCLUSIVE
;
2094 if (nfs4_has_persistent_session(clp
))
2095 data
->o_arg
.createmode
= NFS4_CREATE_GUARDED
;
2096 else if (clp
->cl_mvops
->minor_version
> 0)
2097 data
->o_arg
.createmode
= NFS4_CREATE_EXCLUSIVE4_1
;
2101 trace_nfs4_cached_open(data
->state
);
2104 task
->tk_action
= NULL
;
2106 nfs4_sequence_done(task
, &data
->o_res
.seq_res
);
2109 static void nfs4_open_done(struct rpc_task
*task
, void *calldata
)
2111 struct nfs4_opendata
*data
= calldata
;
2113 data
->rpc_status
= task
->tk_status
;
2115 if (!nfs4_sequence_process(task
, &data
->o_res
.seq_res
))
2118 if (task
->tk_status
== 0) {
2119 if (data
->o_res
.f_attr
->valid
& NFS_ATTR_FATTR_TYPE
) {
2120 switch (data
->o_res
.f_attr
->mode
& S_IFMT
) {
2124 data
->rpc_status
= -ELOOP
;
2127 data
->rpc_status
= -EISDIR
;
2130 data
->rpc_status
= -ENOTDIR
;
2133 renew_lease(data
->o_res
.server
, data
->timestamp
);
2134 if (!(data
->o_res
.rflags
& NFS4_OPEN_RESULT_CONFIRM
))
2135 nfs_confirm_seqid(&data
->owner
->so_seqid
, 0);
2140 static void nfs4_open_release(void *calldata
)
2142 struct nfs4_opendata
*data
= calldata
;
2143 struct nfs4_state
*state
= NULL
;
2145 /* If this request hasn't been cancelled, do nothing */
2146 if (data
->cancelled
== 0)
2148 /* In case of error, no cleanup! */
2149 if (data
->rpc_status
!= 0 || !data
->rpc_done
)
2151 /* In case we need an open_confirm, no cleanup! */
2152 if (data
->o_res
.rflags
& NFS4_OPEN_RESULT_CONFIRM
)
2154 state
= nfs4_opendata_to_nfs4_state(data
);
2156 nfs4_close_state(state
, data
->o_arg
.fmode
);
2158 nfs4_opendata_put(data
);
2161 static const struct rpc_call_ops nfs4_open_ops
= {
2162 .rpc_call_prepare
= nfs4_open_prepare
,
2163 .rpc_call_done
= nfs4_open_done
,
2164 .rpc_release
= nfs4_open_release
,
2167 static int nfs4_run_open_task(struct nfs4_opendata
*data
, int isrecover
)
2169 struct inode
*dir
= d_inode(data
->dir
);
2170 struct nfs_server
*server
= NFS_SERVER(dir
);
2171 struct nfs_openargs
*o_arg
= &data
->o_arg
;
2172 struct nfs_openres
*o_res
= &data
->o_res
;
2173 struct rpc_task
*task
;
2174 struct rpc_message msg
= {
2175 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_OPEN
],
2178 .rpc_cred
= data
->owner
->so_cred
,
2180 struct rpc_task_setup task_setup_data
= {
2181 .rpc_client
= server
->client
,
2182 .rpc_message
= &msg
,
2183 .callback_ops
= &nfs4_open_ops
,
2184 .callback_data
= data
,
2185 .workqueue
= nfsiod_workqueue
,
2186 .flags
= RPC_TASK_ASYNC
,
2190 nfs4_init_sequence(&o_arg
->seq_args
, &o_res
->seq_res
, 1);
2191 kref_get(&data
->kref
);
2193 data
->rpc_status
= 0;
2194 data
->cancelled
= 0;
2195 data
->is_recover
= 0;
2197 nfs4_set_sequence_privileged(&o_arg
->seq_args
);
2198 data
->is_recover
= 1;
2200 task
= rpc_run_task(&task_setup_data
);
2202 return PTR_ERR(task
);
2203 status
= nfs4_wait_for_completion_rpc_task(task
);
2205 data
->cancelled
= 1;
2208 status
= data
->rpc_status
;
2214 static int _nfs4_recover_proc_open(struct nfs4_opendata
*data
)
2216 struct inode
*dir
= d_inode(data
->dir
);
2217 struct nfs_openres
*o_res
= &data
->o_res
;
2220 status
= nfs4_run_open_task(data
, 1);
2221 if (status
!= 0 || !data
->rpc_done
)
2224 nfs_fattr_map_and_free_names(NFS_SERVER(dir
), &data
->f_attr
);
2226 if (o_res
->rflags
& NFS4_OPEN_RESULT_CONFIRM
) {
2227 status
= _nfs4_proc_open_confirm(data
);
2236 * Additional permission checks in order to distinguish between an
2237 * open for read, and an open for execute. This works around the
2238 * fact that NFSv4 OPEN treats read and execute permissions as being
2240 * Note that in the non-execute case, we want to turn off permission
2241 * checking if we just created a new file (POSIX open() semantics).
2243 static int nfs4_opendata_access(struct rpc_cred
*cred
,
2244 struct nfs4_opendata
*opendata
,
2245 struct nfs4_state
*state
, fmode_t fmode
,
2248 struct nfs_access_entry cache
;
2251 /* access call failed or for some reason the server doesn't
2252 * support any access modes -- defer access call until later */
2253 if (opendata
->o_res
.access_supported
== 0)
2258 * Use openflags to check for exec, because fmode won't
2259 * always have FMODE_EXEC set when file open for exec.
2261 if (openflags
& __FMODE_EXEC
) {
2262 /* ONLY check for exec rights */
2264 } else if ((fmode
& FMODE_READ
) && !opendata
->file_created
)
2268 cache
.jiffies
= jiffies
;
2269 nfs_access_set_mask(&cache
, opendata
->o_res
.access_result
);
2270 nfs_access_add_cache(state
->inode
, &cache
);
2272 if ((mask
& ~cache
.mask
& (MAY_READ
| MAY_EXEC
)) == 0)
2275 /* even though OPEN succeeded, access is denied. Close the file */
2276 nfs4_close_state(state
, fmode
);
2281 * Note: On error, nfs4_proc_open will free the struct nfs4_opendata
2283 static int _nfs4_proc_open(struct nfs4_opendata
*data
)
2285 struct inode
*dir
= d_inode(data
->dir
);
2286 struct nfs_server
*server
= NFS_SERVER(dir
);
2287 struct nfs_openargs
*o_arg
= &data
->o_arg
;
2288 struct nfs_openres
*o_res
= &data
->o_res
;
2291 status
= nfs4_run_open_task(data
, 0);
2292 if (!data
->rpc_done
)
2295 if (status
== -NFS4ERR_BADNAME
&&
2296 !(o_arg
->open_flags
& O_CREAT
))
2301 nfs_fattr_map_and_free_names(server
, &data
->f_attr
);
2303 if (o_arg
->open_flags
& O_CREAT
) {
2304 update_changeattr(dir
, &o_res
->cinfo
);
2305 if (o_arg
->open_flags
& O_EXCL
)
2306 data
->file_created
= 1;
2307 else if (o_res
->cinfo
.before
!= o_res
->cinfo
.after
)
2308 data
->file_created
= 1;
2310 if ((o_res
->rflags
& NFS4_OPEN_RESULT_LOCKTYPE_POSIX
) == 0)
2311 server
->caps
&= ~NFS_CAP_POSIX_LOCK
;
2312 if(o_res
->rflags
& NFS4_OPEN_RESULT_CONFIRM
) {
2313 status
= _nfs4_proc_open_confirm(data
);
2317 if (!(o_res
->f_attr
->valid
& NFS_ATTR_FATTR
))
2318 nfs4_proc_getattr(server
, &o_res
->fh
, o_res
->f_attr
, o_res
->f_label
);
2322 static int nfs4_recover_expired_lease(struct nfs_server
*server
)
2324 return nfs4_client_recover_expired_lease(server
->nfs_client
);
2329 * reclaim state on the server after a network partition.
2330 * Assumes caller holds the appropriate lock
2332 static int _nfs4_open_expired(struct nfs_open_context
*ctx
, struct nfs4_state
*state
)
2334 struct nfs4_opendata
*opendata
;
2337 opendata
= nfs4_open_recoverdata_alloc(ctx
, state
,
2338 NFS4_OPEN_CLAIM_FH
);
2339 if (IS_ERR(opendata
))
2340 return PTR_ERR(opendata
);
2341 ret
= nfs4_open_recover(opendata
, state
);
2343 d_drop(ctx
->dentry
);
2344 nfs4_opendata_put(opendata
);
2348 static int nfs4_do_open_expired(struct nfs_open_context
*ctx
, struct nfs4_state
*state
)
2350 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
2351 struct nfs4_exception exception
= { };
2355 err
= _nfs4_open_expired(ctx
, state
);
2356 trace_nfs4_open_expired(ctx
, 0, err
);
2357 if (nfs4_clear_cap_atomic_open_v1(server
, err
, &exception
))
2362 case -NFS4ERR_GRACE
:
2363 case -NFS4ERR_DELAY
:
2364 nfs4_handle_exception(server
, err
, &exception
);
2367 } while (exception
.retry
);
2372 static int nfs4_open_expired(struct nfs4_state_owner
*sp
, struct nfs4_state
*state
)
2374 struct nfs_open_context
*ctx
;
2377 ctx
= nfs4_state_find_open_context(state
);
2380 ret
= nfs4_do_open_expired(ctx
, state
);
2381 put_nfs_open_context(ctx
);
2385 static void nfs_finish_clear_delegation_stateid(struct nfs4_state
*state
)
2387 nfs_remove_bad_delegation(state
->inode
);
2388 write_seqlock(&state
->seqlock
);
2389 nfs4_stateid_copy(&state
->stateid
, &state
->open_stateid
);
2390 write_sequnlock(&state
->seqlock
);
2391 clear_bit(NFS_DELEGATED_STATE
, &state
->flags
);
2394 static void nfs40_clear_delegation_stateid(struct nfs4_state
*state
)
2396 if (rcu_access_pointer(NFS_I(state
->inode
)->delegation
) != NULL
)
2397 nfs_finish_clear_delegation_stateid(state
);
2400 static int nfs40_open_expired(struct nfs4_state_owner
*sp
, struct nfs4_state
*state
)
2402 /* NFSv4.0 doesn't allow for delegation recovery on open expire */
2403 nfs40_clear_delegation_stateid(state
);
2404 return nfs4_open_expired(sp
, state
);
2407 #if defined(CONFIG_NFS_V4_1)
2408 static void nfs41_check_delegation_stateid(struct nfs4_state
*state
)
2410 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
2411 nfs4_stateid stateid
;
2412 struct nfs_delegation
*delegation
;
2413 struct rpc_cred
*cred
;
2416 /* Get the delegation credential for use by test/free_stateid */
2418 delegation
= rcu_dereference(NFS_I(state
->inode
)->delegation
);
2419 if (delegation
== NULL
) {
2424 nfs4_stateid_copy(&stateid
, &delegation
->stateid
);
2425 cred
= get_rpccred(delegation
->cred
);
2427 status
= nfs41_test_stateid(server
, &stateid
, cred
);
2428 trace_nfs4_test_delegation_stateid(state
, NULL
, status
);
2430 if (status
!= NFS_OK
) {
2431 /* Free the stateid unless the server explicitly
2432 * informs us the stateid is unrecognized. */
2433 if (status
!= -NFS4ERR_BAD_STATEID
)
2434 nfs41_free_stateid(server
, &stateid
, cred
);
2435 nfs_finish_clear_delegation_stateid(state
);
2442 * nfs41_check_open_stateid - possibly free an open stateid
2444 * @state: NFSv4 state for an inode
2446 * Returns NFS_OK if recovery for this stateid is now finished.
2447 * Otherwise a negative NFS4ERR value is returned.
2449 static int nfs41_check_open_stateid(struct nfs4_state
*state
)
2451 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
2452 nfs4_stateid
*stateid
= &state
->open_stateid
;
2453 struct rpc_cred
*cred
= state
->owner
->so_cred
;
2456 /* If a state reset has been done, test_stateid is unneeded */
2457 if ((test_bit(NFS_O_RDONLY_STATE
, &state
->flags
) == 0) &&
2458 (test_bit(NFS_O_WRONLY_STATE
, &state
->flags
) == 0) &&
2459 (test_bit(NFS_O_RDWR_STATE
, &state
->flags
) == 0))
2460 return -NFS4ERR_BAD_STATEID
;
2462 status
= nfs41_test_stateid(server
, stateid
, cred
);
2463 trace_nfs4_test_open_stateid(state
, NULL
, status
);
2464 if (status
!= NFS_OK
) {
2465 /* Free the stateid unless the server explicitly
2466 * informs us the stateid is unrecognized. */
2467 if (status
!= -NFS4ERR_BAD_STATEID
)
2468 nfs41_free_stateid(server
, stateid
, cred
);
2470 clear_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
2471 clear_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
2472 clear_bit(NFS_O_RDWR_STATE
, &state
->flags
);
2473 clear_bit(NFS_OPEN_STATE
, &state
->flags
);
2478 static int nfs41_open_expired(struct nfs4_state_owner
*sp
, struct nfs4_state
*state
)
2482 nfs41_check_delegation_stateid(state
);
2483 status
= nfs41_check_open_stateid(state
);
2484 if (status
!= NFS_OK
)
2485 status
= nfs4_open_expired(sp
, state
);
2491 * on an EXCLUSIVE create, the server should send back a bitmask with FATTR4-*
2492 * fields corresponding to attributes that were used to store the verifier.
2493 * Make sure we clobber those fields in the later setattr call
2495 static inline void nfs4_exclusive_attrset(struct nfs4_opendata
*opendata
,
2496 struct iattr
*sattr
, struct nfs4_label
**label
)
2498 const u32
*attrset
= opendata
->o_res
.attrset
;
2500 if ((attrset
[1] & FATTR4_WORD1_TIME_ACCESS
) &&
2501 !(sattr
->ia_valid
& ATTR_ATIME_SET
))
2502 sattr
->ia_valid
|= ATTR_ATIME
;
2504 if ((attrset
[1] & FATTR4_WORD1_TIME_MODIFY
) &&
2505 !(sattr
->ia_valid
& ATTR_MTIME_SET
))
2506 sattr
->ia_valid
|= ATTR_MTIME
;
2508 /* Except MODE, it seems harmless of setting twice. */
2509 if ((attrset
[1] & FATTR4_WORD1_MODE
))
2510 sattr
->ia_valid
&= ~ATTR_MODE
;
2512 if (attrset
[2] & FATTR4_WORD2_SECURITY_LABEL
)
2516 static int _nfs4_open_and_get_state(struct nfs4_opendata
*opendata
,
2519 struct nfs_open_context
*ctx
)
2521 struct nfs4_state_owner
*sp
= opendata
->owner
;
2522 struct nfs_server
*server
= sp
->so_server
;
2523 struct dentry
*dentry
;
2524 struct nfs4_state
*state
;
2528 seq
= raw_seqcount_begin(&sp
->so_reclaim_seqcount
);
2530 ret
= _nfs4_proc_open(opendata
);
2534 state
= nfs4_opendata_to_nfs4_state(opendata
);
2535 ret
= PTR_ERR(state
);
2538 if (server
->caps
& NFS_CAP_POSIX_LOCK
)
2539 set_bit(NFS_STATE_POSIX_LOCKS
, &state
->flags
);
2540 if (opendata
->o_res
.rflags
& NFS4_OPEN_RESULT_MAY_NOTIFY_LOCK
)
2541 set_bit(NFS_STATE_MAY_NOTIFY_LOCK
, &state
->flags
);
2543 dentry
= opendata
->dentry
;
2544 if (d_really_is_negative(dentry
)) {
2545 struct dentry
*alias
;
2547 alias
= d_exact_alias(dentry
, state
->inode
);
2549 alias
= d_splice_alias(igrab(state
->inode
), dentry
);
2550 /* d_splice_alias() can't fail here - it's a non-directory */
2553 ctx
->dentry
= dentry
= alias
;
2555 nfs_set_verifier(dentry
,
2556 nfs_save_change_attribute(d_inode(opendata
->dir
)));
2559 ret
= nfs4_opendata_access(sp
->so_cred
, opendata
, state
, fmode
, flags
);
2564 if (d_inode(dentry
) == state
->inode
) {
2565 nfs_inode_attach_open_context(ctx
);
2566 if (read_seqcount_retry(&sp
->so_reclaim_seqcount
, seq
))
2567 nfs4_schedule_stateid_recovery(server
, state
);
2574 * Returns a referenced nfs4_state
2576 static int _nfs4_do_open(struct inode
*dir
,
2577 struct nfs_open_context
*ctx
,
2579 struct iattr
*sattr
,
2580 struct nfs4_label
*label
,
2583 struct nfs4_state_owner
*sp
;
2584 struct nfs4_state
*state
= NULL
;
2585 struct nfs_server
*server
= NFS_SERVER(dir
);
2586 struct nfs4_opendata
*opendata
;
2587 struct dentry
*dentry
= ctx
->dentry
;
2588 struct rpc_cred
*cred
= ctx
->cred
;
2589 struct nfs4_threshold
**ctx_th
= &ctx
->mdsthreshold
;
2590 fmode_t fmode
= ctx
->mode
& (FMODE_READ
|FMODE_WRITE
|FMODE_EXEC
);
2591 enum open_claim_type4 claim
= NFS4_OPEN_CLAIM_NULL
;
2592 struct nfs4_label
*olabel
= NULL
;
2595 /* Protect against reboot recovery conflicts */
2597 sp
= nfs4_get_state_owner(server
, cred
, GFP_KERNEL
);
2599 dprintk("nfs4_do_open: nfs4_get_state_owner failed!\n");
2602 status
= nfs4_recover_expired_lease(server
);
2604 goto err_put_state_owner
;
2605 if (d_really_is_positive(dentry
))
2606 nfs4_return_incompatible_delegation(d_inode(dentry
), fmode
);
2608 if (d_really_is_positive(dentry
))
2609 claim
= NFS4_OPEN_CLAIM_FH
;
2610 opendata
= nfs4_opendata_alloc(dentry
, sp
, fmode
, flags
, sattr
,
2611 label
, claim
, GFP_KERNEL
);
2612 if (opendata
== NULL
)
2613 goto err_put_state_owner
;
2616 olabel
= nfs4_label_alloc(server
, GFP_KERNEL
);
2617 if (IS_ERR(olabel
)) {
2618 status
= PTR_ERR(olabel
);
2619 goto err_opendata_put
;
2623 if (server
->attr_bitmask
[2] & FATTR4_WORD2_MDSTHRESHOLD
) {
2624 if (!opendata
->f_attr
.mdsthreshold
) {
2625 opendata
->f_attr
.mdsthreshold
= pnfs_mdsthreshold_alloc();
2626 if (!opendata
->f_attr
.mdsthreshold
)
2627 goto err_free_label
;
2629 opendata
->o_arg
.open_bitmap
= &nfs4_pnfs_open_bitmap
[0];
2631 if (d_really_is_positive(dentry
))
2632 opendata
->state
= nfs4_get_open_state(d_inode(dentry
), sp
);
2634 status
= _nfs4_open_and_get_state(opendata
, fmode
, flags
, ctx
);
2636 goto err_free_label
;
2639 if ((opendata
->o_arg
.open_flags
& (O_CREAT
|O_EXCL
)) == (O_CREAT
|O_EXCL
) &&
2640 (opendata
->o_arg
.createmode
!= NFS4_CREATE_GUARDED
)) {
2641 nfs4_exclusive_attrset(opendata
, sattr
, &label
);
2643 * send create attributes which was not set by open
2644 * with an extra setattr.
2646 if (sattr
->ia_valid
& NFS4_VALID_ATTRS
) {
2647 nfs_fattr_init(opendata
->o_res
.f_attr
);
2648 status
= nfs4_do_setattr(state
->inode
, cred
,
2649 opendata
->o_res
.f_attr
, sattr
,
2650 state
, label
, olabel
);
2652 nfs_setattr_update_inode(state
->inode
, sattr
,
2653 opendata
->o_res
.f_attr
);
2654 nfs_setsecurity(state
->inode
, opendata
->o_res
.f_attr
, olabel
);
2658 if (opened
&& opendata
->file_created
)
2659 *opened
|= FILE_CREATED
;
2661 if (pnfs_use_threshold(ctx_th
, opendata
->f_attr
.mdsthreshold
, server
)) {
2662 *ctx_th
= opendata
->f_attr
.mdsthreshold
;
2663 opendata
->f_attr
.mdsthreshold
= NULL
;
2666 nfs4_label_free(olabel
);
2668 nfs4_opendata_put(opendata
);
2669 nfs4_put_state_owner(sp
);
2672 nfs4_label_free(olabel
);
2674 nfs4_opendata_put(opendata
);
2675 err_put_state_owner
:
2676 nfs4_put_state_owner(sp
);
2682 static struct nfs4_state
*nfs4_do_open(struct inode
*dir
,
2683 struct nfs_open_context
*ctx
,
2685 struct iattr
*sattr
,
2686 struct nfs4_label
*label
,
2689 struct nfs_server
*server
= NFS_SERVER(dir
);
2690 struct nfs4_exception exception
= { };
2691 struct nfs4_state
*res
;
2695 status
= _nfs4_do_open(dir
, ctx
, flags
, sattr
, label
, opened
);
2697 trace_nfs4_open_file(ctx
, flags
, status
);
2700 /* NOTE: BAD_SEQID means the server and client disagree about the
2701 * book-keeping w.r.t. state-changing operations
2702 * (OPEN/CLOSE/LOCK/LOCKU...)
2703 * It is actually a sign of a bug on the client or on the server.
2705 * If we receive a BAD_SEQID error in the particular case of
2706 * doing an OPEN, we assume that nfs_increment_open_seqid() will
2707 * have unhashed the old state_owner for us, and that we can
2708 * therefore safely retry using a new one. We should still warn
2709 * the user though...
2711 if (status
== -NFS4ERR_BAD_SEQID
) {
2712 pr_warn_ratelimited("NFS: v4 server %s "
2713 " returned a bad sequence-id error!\n",
2714 NFS_SERVER(dir
)->nfs_client
->cl_hostname
);
2715 exception
.retry
= 1;
2719 * BAD_STATEID on OPEN means that the server cancelled our
2720 * state before it received the OPEN_CONFIRM.
2721 * Recover by retrying the request as per the discussion
2722 * on Page 181 of RFC3530.
2724 if (status
== -NFS4ERR_BAD_STATEID
) {
2725 exception
.retry
= 1;
2728 if (status
== -EAGAIN
) {
2729 /* We must have found a delegation */
2730 exception
.retry
= 1;
2733 if (nfs4_clear_cap_atomic_open_v1(server
, status
, &exception
))
2735 res
= ERR_PTR(nfs4_handle_exception(server
,
2736 status
, &exception
));
2737 } while (exception
.retry
);
2741 static int _nfs4_do_setattr(struct inode
*inode
,
2742 struct nfs_setattrargs
*arg
,
2743 struct nfs_setattrres
*res
,
2744 struct rpc_cred
*cred
,
2745 struct nfs4_state
*state
)
2747 struct nfs_server
*server
= NFS_SERVER(inode
);
2748 struct rpc_message msg
= {
2749 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETATTR
],
2754 struct rpc_cred
*delegation_cred
= NULL
;
2755 unsigned long timestamp
= jiffies
;
2760 nfs_fattr_init(res
->fattr
);
2762 /* Servers should only apply open mode checks for file size changes */
2763 truncate
= (arg
->iap
->ia_valid
& ATTR_SIZE
) ? true : false;
2764 fmode
= truncate
? FMODE_WRITE
: FMODE_READ
;
2766 if (nfs4_copy_delegation_stateid(inode
, fmode
, &arg
->stateid
, &delegation_cred
)) {
2767 /* Use that stateid */
2768 } else if (truncate
&& state
!= NULL
) {
2769 struct nfs_lockowner lockowner
= {
2770 .l_owner
= current
->files
,
2771 .l_pid
= current
->tgid
,
2773 if (!nfs4_valid_open_stateid(state
))
2775 if (nfs4_select_rw_stateid(state
, FMODE_WRITE
, &lockowner
,
2776 &arg
->stateid
, &delegation_cred
) == -EIO
)
2779 nfs4_stateid_copy(&arg
->stateid
, &zero_stateid
);
2780 if (delegation_cred
)
2781 msg
.rpc_cred
= delegation_cred
;
2783 status
= nfs4_call_sync(server
->client
, server
, &msg
, &arg
->seq_args
, &res
->seq_res
, 1);
2785 put_rpccred(delegation_cred
);
2786 if (status
== 0 && state
!= NULL
)
2787 renew_lease(server
, timestamp
);
2788 trace_nfs4_setattr(inode
, &arg
->stateid
, status
);
2792 static int nfs4_do_setattr(struct inode
*inode
, struct rpc_cred
*cred
,
2793 struct nfs_fattr
*fattr
, struct iattr
*sattr
,
2794 struct nfs4_state
*state
, struct nfs4_label
*ilabel
,
2795 struct nfs4_label
*olabel
)
2797 struct nfs_server
*server
= NFS_SERVER(inode
);
2798 struct nfs_setattrargs arg
= {
2799 .fh
= NFS_FH(inode
),
2802 .bitmask
= server
->attr_bitmask
,
2805 struct nfs_setattrres res
= {
2810 struct nfs4_exception exception
= {
2813 .stateid
= &arg
.stateid
,
2817 arg
.bitmask
= nfs4_bitmask(server
, ilabel
);
2819 arg
.bitmask
= nfs4_bitmask(server
, olabel
);
2822 err
= _nfs4_do_setattr(inode
, &arg
, &res
, cred
, state
);
2824 case -NFS4ERR_OPENMODE
:
2825 if (!(sattr
->ia_valid
& ATTR_SIZE
)) {
2826 pr_warn_once("NFSv4: server %s is incorrectly "
2827 "applying open mode checks to "
2828 "a SETATTR that is not "
2829 "changing file size.\n",
2830 server
->nfs_client
->cl_hostname
);
2832 if (state
&& !(state
->state
& FMODE_WRITE
)) {
2834 if (sattr
->ia_valid
& ATTR_OPEN
)
2839 err
= nfs4_handle_exception(server
, err
, &exception
);
2840 } while (exception
.retry
);
2846 nfs4_wait_on_layoutreturn(struct inode
*inode
, struct rpc_task
*task
)
2848 if (inode
== NULL
|| !nfs_have_layout(inode
))
2851 return pnfs_wait_on_layoutreturn(inode
, task
);
2854 struct nfs4_closedata
{
2855 struct inode
*inode
;
2856 struct nfs4_state
*state
;
2857 struct nfs_closeargs arg
;
2858 struct nfs_closeres res
;
2859 struct nfs_fattr fattr
;
2860 unsigned long timestamp
;
2865 static void nfs4_free_closedata(void *data
)
2867 struct nfs4_closedata
*calldata
= data
;
2868 struct nfs4_state_owner
*sp
= calldata
->state
->owner
;
2869 struct super_block
*sb
= calldata
->state
->inode
->i_sb
;
2872 pnfs_roc_release(calldata
->state
->inode
);
2873 nfs4_put_open_state(calldata
->state
);
2874 nfs_free_seqid(calldata
->arg
.seqid
);
2875 nfs4_put_state_owner(sp
);
2876 nfs_sb_deactive(sb
);
2880 static void nfs4_close_done(struct rpc_task
*task
, void *data
)
2882 struct nfs4_closedata
*calldata
= data
;
2883 struct nfs4_state
*state
= calldata
->state
;
2884 struct nfs_server
*server
= NFS_SERVER(calldata
->inode
);
2885 nfs4_stateid
*res_stateid
= NULL
;
2887 dprintk("%s: begin!\n", __func__
);
2888 if (!nfs4_sequence_done(task
, &calldata
->res
.seq_res
))
2890 trace_nfs4_close(state
, &calldata
->arg
, &calldata
->res
, task
->tk_status
);
2891 /* hmm. we are done with the inode, and in the process of freeing
2892 * the state_owner. we keep this around to process errors
2894 switch (task
->tk_status
) {
2896 res_stateid
= &calldata
->res
.stateid
;
2898 pnfs_roc_set_barrier(state
->inode
,
2899 calldata
->roc_barrier
);
2900 renew_lease(server
, calldata
->timestamp
);
2902 case -NFS4ERR_ADMIN_REVOKED
:
2903 case -NFS4ERR_STALE_STATEID
:
2904 case -NFS4ERR_OLD_STATEID
:
2905 case -NFS4ERR_BAD_STATEID
:
2906 case -NFS4ERR_EXPIRED
:
2907 if (!nfs4_stateid_match(&calldata
->arg
.stateid
,
2908 &state
->open_stateid
)) {
2909 rpc_restart_call_prepare(task
);
2912 if (calldata
->arg
.fmode
== 0)
2915 if (nfs4_async_handle_error(task
, server
, state
, NULL
) == -EAGAIN
) {
2916 rpc_restart_call_prepare(task
);
2920 nfs_clear_open_stateid(state
, &calldata
->arg
.stateid
,
2921 res_stateid
, calldata
->arg
.fmode
);
2923 nfs_release_seqid(calldata
->arg
.seqid
);
2924 nfs_refresh_inode(calldata
->inode
, calldata
->res
.fattr
);
2925 dprintk("%s: done, ret = %d!\n", __func__
, task
->tk_status
);
2928 static void nfs4_close_prepare(struct rpc_task
*task
, void *data
)
2930 struct nfs4_closedata
*calldata
= data
;
2931 struct nfs4_state
*state
= calldata
->state
;
2932 struct inode
*inode
= calldata
->inode
;
2933 bool is_rdonly
, is_wronly
, is_rdwr
;
2936 dprintk("%s: begin!\n", __func__
);
2937 if (nfs_wait_on_sequence(calldata
->arg
.seqid
, task
) != 0)
2940 task
->tk_msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_OPEN_DOWNGRADE
];
2941 spin_lock(&state
->owner
->so_lock
);
2942 is_rdwr
= test_bit(NFS_O_RDWR_STATE
, &state
->flags
);
2943 is_rdonly
= test_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
2944 is_wronly
= test_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
2945 nfs4_stateid_copy(&calldata
->arg
.stateid
, &state
->open_stateid
);
2946 /* Calculate the change in open mode */
2947 calldata
->arg
.fmode
= 0;
2948 if (state
->n_rdwr
== 0) {
2949 if (state
->n_rdonly
== 0)
2950 call_close
|= is_rdonly
;
2952 calldata
->arg
.fmode
|= FMODE_READ
;
2953 if (state
->n_wronly
== 0)
2954 call_close
|= is_wronly
;
2956 calldata
->arg
.fmode
|= FMODE_WRITE
;
2957 if (calldata
->arg
.fmode
!= (FMODE_READ
|FMODE_WRITE
))
2958 call_close
|= is_rdwr
;
2960 calldata
->arg
.fmode
|= FMODE_READ
|FMODE_WRITE
;
2962 if (!nfs4_valid_open_stateid(state
))
2964 spin_unlock(&state
->owner
->so_lock
);
2967 /* Note: exit _without_ calling nfs4_close_done */
2971 if (nfs4_wait_on_layoutreturn(inode
, task
)) {
2972 nfs_release_seqid(calldata
->arg
.seqid
);
2976 if (calldata
->arg
.fmode
== 0)
2977 task
->tk_msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_CLOSE
];
2979 pnfs_roc_get_barrier(inode
, &calldata
->roc_barrier
);
2981 calldata
->arg
.share_access
=
2982 nfs4_map_atomic_open_share(NFS_SERVER(inode
),
2983 calldata
->arg
.fmode
, 0);
2985 nfs_fattr_init(calldata
->res
.fattr
);
2986 calldata
->timestamp
= jiffies
;
2987 if (nfs4_setup_sequence(NFS_SERVER(inode
),
2988 &calldata
->arg
.seq_args
,
2989 &calldata
->res
.seq_res
,
2991 nfs_release_seqid(calldata
->arg
.seqid
);
2992 dprintk("%s: done!\n", __func__
);
2995 task
->tk_action
= NULL
;
2997 nfs4_sequence_done(task
, &calldata
->res
.seq_res
);
3000 static const struct rpc_call_ops nfs4_close_ops
= {
3001 .rpc_call_prepare
= nfs4_close_prepare
,
3002 .rpc_call_done
= nfs4_close_done
,
3003 .rpc_release
= nfs4_free_closedata
,
3006 static bool nfs4_roc(struct inode
*inode
)
3008 if (!nfs_have_layout(inode
))
3010 return pnfs_roc(inode
);
3014 * It is possible for data to be read/written from a mem-mapped file
3015 * after the sys_close call (which hits the vfs layer as a flush).
3016 * This means that we can't safely call nfsv4 close on a file until
3017 * the inode is cleared. This in turn means that we are not good
3018 * NFSv4 citizens - we do not indicate to the server to update the file's
3019 * share state even when we are done with one of the three share
3020 * stateid's in the inode.
3022 * NOTE: Caller must be holding the sp->so_owner semaphore!
3024 int nfs4_do_close(struct nfs4_state
*state
, gfp_t gfp_mask
, int wait
)
3026 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
3027 struct nfs_seqid
*(*alloc_seqid
)(struct nfs_seqid_counter
*, gfp_t
);
3028 struct nfs4_closedata
*calldata
;
3029 struct nfs4_state_owner
*sp
= state
->owner
;
3030 struct rpc_task
*task
;
3031 struct rpc_message msg
= {
3032 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_CLOSE
],
3033 .rpc_cred
= state
->owner
->so_cred
,
3035 struct rpc_task_setup task_setup_data
= {
3036 .rpc_client
= server
->client
,
3037 .rpc_message
= &msg
,
3038 .callback_ops
= &nfs4_close_ops
,
3039 .workqueue
= nfsiod_workqueue
,
3040 .flags
= RPC_TASK_ASYNC
,
3042 int status
= -ENOMEM
;
3044 nfs4_state_protect(server
->nfs_client
, NFS_SP4_MACH_CRED_CLEANUP
,
3045 &task_setup_data
.rpc_client
, &msg
);
3047 calldata
= kzalloc(sizeof(*calldata
), gfp_mask
);
3048 if (calldata
== NULL
)
3050 nfs4_init_sequence(&calldata
->arg
.seq_args
, &calldata
->res
.seq_res
, 1);
3051 calldata
->inode
= state
->inode
;
3052 calldata
->state
= state
;
3053 calldata
->arg
.fh
= NFS_FH(state
->inode
);
3054 /* Serialization for the sequence id */
3055 alloc_seqid
= server
->nfs_client
->cl_mvops
->alloc_seqid
;
3056 calldata
->arg
.seqid
= alloc_seqid(&state
->owner
->so_seqid
, gfp_mask
);
3057 if (IS_ERR(calldata
->arg
.seqid
))
3058 goto out_free_calldata
;
3059 calldata
->arg
.fmode
= 0;
3060 calldata
->arg
.bitmask
= server
->cache_consistency_bitmask
;
3061 calldata
->res
.fattr
= &calldata
->fattr
;
3062 calldata
->res
.seqid
= calldata
->arg
.seqid
;
3063 calldata
->res
.server
= server
;
3064 calldata
->roc
= nfs4_roc(state
->inode
);
3065 nfs_sb_active(calldata
->inode
->i_sb
);
3067 msg
.rpc_argp
= &calldata
->arg
;
3068 msg
.rpc_resp
= &calldata
->res
;
3069 task_setup_data
.callback_data
= calldata
;
3070 task
= rpc_run_task(&task_setup_data
);
3072 return PTR_ERR(task
);
3075 status
= rpc_wait_for_completion_task(task
);
3081 nfs4_put_open_state(state
);
3082 nfs4_put_state_owner(sp
);
3086 static struct inode
*
3087 nfs4_atomic_open(struct inode
*dir
, struct nfs_open_context
*ctx
,
3088 int open_flags
, struct iattr
*attr
, int *opened
)
3090 struct nfs4_state
*state
;
3091 struct nfs4_label l
= {0, 0, 0, NULL
}, *label
= NULL
;
3093 label
= nfs4_label_init_security(dir
, ctx
->dentry
, attr
, &l
);
3095 /* Protect against concurrent sillydeletes */
3096 state
= nfs4_do_open(dir
, ctx
, open_flags
, attr
, label
, opened
);
3098 nfs4_label_release_security(label
);
3101 return ERR_CAST(state
);
3102 return state
->inode
;
3105 static void nfs4_close_context(struct nfs_open_context
*ctx
, int is_sync
)
3107 if (ctx
->state
== NULL
)
3110 nfs4_close_sync(ctx
->state
, ctx
->mode
);
3112 nfs4_close_state(ctx
->state
, ctx
->mode
);
3115 #define FATTR4_WORD1_NFS40_MASK (2*FATTR4_WORD1_MOUNTED_ON_FILEID - 1UL)
3116 #define FATTR4_WORD2_NFS41_MASK (2*FATTR4_WORD2_SUPPATTR_EXCLCREAT - 1UL)
3117 #define FATTR4_WORD2_NFS42_MASK (2*FATTR4_WORD2_SECURITY_LABEL - 1UL)
3119 static int _nfs4_server_capabilities(struct nfs_server
*server
, struct nfs_fh
*fhandle
)
3121 u32 bitmask
[3] = {}, minorversion
= server
->nfs_client
->cl_minorversion
;
3122 struct nfs4_server_caps_arg args
= {
3126 struct nfs4_server_caps_res res
= {};
3127 struct rpc_message msg
= {
3128 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SERVER_CAPS
],
3134 bitmask
[0] = FATTR4_WORD0_SUPPORTED_ATTRS
|
3135 FATTR4_WORD0_FH_EXPIRE_TYPE
|
3136 FATTR4_WORD0_LINK_SUPPORT
|
3137 FATTR4_WORD0_SYMLINK_SUPPORT
|
3138 FATTR4_WORD0_ACLSUPPORT
;
3140 bitmask
[2] = FATTR4_WORD2_SUPPATTR_EXCLCREAT
;
3142 status
= nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
3144 /* Sanity check the server answers */
3145 switch (minorversion
) {
3147 res
.attr_bitmask
[1] &= FATTR4_WORD1_NFS40_MASK
;
3148 res
.attr_bitmask
[2] = 0;
3151 res
.attr_bitmask
[2] &= FATTR4_WORD2_NFS41_MASK
;
3154 res
.attr_bitmask
[2] &= FATTR4_WORD2_NFS42_MASK
;
3156 memcpy(server
->attr_bitmask
, res
.attr_bitmask
, sizeof(server
->attr_bitmask
));
3157 server
->caps
&= ~(NFS_CAP_ACLS
|NFS_CAP_HARDLINKS
|
3158 NFS_CAP_SYMLINKS
|NFS_CAP_FILEID
|
3159 NFS_CAP_MODE
|NFS_CAP_NLINK
|NFS_CAP_OWNER
|
3160 NFS_CAP_OWNER_GROUP
|NFS_CAP_ATIME
|
3161 NFS_CAP_CTIME
|NFS_CAP_MTIME
|
3162 NFS_CAP_SECURITY_LABEL
);
3163 if (res
.attr_bitmask
[0] & FATTR4_WORD0_ACL
&&
3164 res
.acl_bitmask
& ACL4_SUPPORT_ALLOW_ACL
)
3165 server
->caps
|= NFS_CAP_ACLS
;
3166 if (res
.has_links
!= 0)
3167 server
->caps
|= NFS_CAP_HARDLINKS
;
3168 if (res
.has_symlinks
!= 0)
3169 server
->caps
|= NFS_CAP_SYMLINKS
;
3170 if (res
.attr_bitmask
[0] & FATTR4_WORD0_FILEID
)
3171 server
->caps
|= NFS_CAP_FILEID
;
3172 if (res
.attr_bitmask
[1] & FATTR4_WORD1_MODE
)
3173 server
->caps
|= NFS_CAP_MODE
;
3174 if (res
.attr_bitmask
[1] & FATTR4_WORD1_NUMLINKS
)
3175 server
->caps
|= NFS_CAP_NLINK
;
3176 if (res
.attr_bitmask
[1] & FATTR4_WORD1_OWNER
)
3177 server
->caps
|= NFS_CAP_OWNER
;
3178 if (res
.attr_bitmask
[1] & FATTR4_WORD1_OWNER_GROUP
)
3179 server
->caps
|= NFS_CAP_OWNER_GROUP
;
3180 if (res
.attr_bitmask
[1] & FATTR4_WORD1_TIME_ACCESS
)
3181 server
->caps
|= NFS_CAP_ATIME
;
3182 if (res
.attr_bitmask
[1] & FATTR4_WORD1_TIME_METADATA
)
3183 server
->caps
|= NFS_CAP_CTIME
;
3184 if (res
.attr_bitmask
[1] & FATTR4_WORD1_TIME_MODIFY
)
3185 server
->caps
|= NFS_CAP_MTIME
;
3186 #ifdef CONFIG_NFS_V4_SECURITY_LABEL
3187 if (res
.attr_bitmask
[2] & FATTR4_WORD2_SECURITY_LABEL
)
3188 server
->caps
|= NFS_CAP_SECURITY_LABEL
;
3190 memcpy(server
->attr_bitmask_nl
, res
.attr_bitmask
,
3191 sizeof(server
->attr_bitmask
));
3192 server
->attr_bitmask_nl
[2] &= ~FATTR4_WORD2_SECURITY_LABEL
;
3194 memcpy(server
->cache_consistency_bitmask
, res
.attr_bitmask
, sizeof(server
->cache_consistency_bitmask
));
3195 server
->cache_consistency_bitmask
[0] &= FATTR4_WORD0_CHANGE
|FATTR4_WORD0_SIZE
;
3196 server
->cache_consistency_bitmask
[1] &= FATTR4_WORD1_TIME_METADATA
|FATTR4_WORD1_TIME_MODIFY
;
3197 server
->cache_consistency_bitmask
[2] = 0;
3198 memcpy(server
->exclcreat_bitmask
, res
.exclcreat_bitmask
,
3199 sizeof(server
->exclcreat_bitmask
));
3200 server
->acl_bitmask
= res
.acl_bitmask
;
3201 server
->fh_expire_type
= res
.fh_expire_type
;
3207 int nfs4_server_capabilities(struct nfs_server
*server
, struct nfs_fh
*fhandle
)
3209 struct nfs4_exception exception
= { };
3212 err
= nfs4_handle_exception(server
,
3213 _nfs4_server_capabilities(server
, fhandle
),
3215 } while (exception
.retry
);
3219 static int _nfs4_lookup_root(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
3220 struct nfs_fsinfo
*info
)
3223 struct nfs4_lookup_root_arg args
= {
3226 struct nfs4_lookup_res res
= {
3228 .fattr
= info
->fattr
,
3231 struct rpc_message msg
= {
3232 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOOKUP_ROOT
],
3237 bitmask
[0] = nfs4_fattr_bitmap
[0];
3238 bitmask
[1] = nfs4_fattr_bitmap
[1];
3240 * Process the label in the upcoming getfattr
3242 bitmask
[2] = nfs4_fattr_bitmap
[2] & ~FATTR4_WORD2_SECURITY_LABEL
;
3244 nfs_fattr_init(info
->fattr
);
3245 return nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
3248 static int nfs4_lookup_root(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
3249 struct nfs_fsinfo
*info
)
3251 struct nfs4_exception exception
= { };
3254 err
= _nfs4_lookup_root(server
, fhandle
, info
);
3255 trace_nfs4_lookup_root(server
, fhandle
, info
->fattr
, err
);
3258 case -NFS4ERR_WRONGSEC
:
3261 err
= nfs4_handle_exception(server
, err
, &exception
);
3263 } while (exception
.retry
);
3268 static int nfs4_lookup_root_sec(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
3269 struct nfs_fsinfo
*info
, rpc_authflavor_t flavor
)
3271 struct rpc_auth_create_args auth_args
= {
3272 .pseudoflavor
= flavor
,
3274 struct rpc_auth
*auth
;
3277 auth
= rpcauth_create(&auth_args
, server
->client
);
3282 ret
= nfs4_lookup_root(server
, fhandle
, info
);
3288 * Retry pseudoroot lookup with various security flavors. We do this when:
3290 * NFSv4.0: the PUTROOTFH operation returns NFS4ERR_WRONGSEC
3291 * NFSv4.1: the server does not support the SECINFO_NO_NAME operation
3293 * Returns zero on success, or a negative NFS4ERR value, or a
3294 * negative errno value.
3296 static int nfs4_find_root_sec(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
3297 struct nfs_fsinfo
*info
)
3299 /* Per 3530bis 15.33.5 */
3300 static const rpc_authflavor_t flav_array
[] = {
3304 RPC_AUTH_UNIX
, /* courtesy */
3307 int status
= -EPERM
;
3310 if (server
->auth_info
.flavor_len
> 0) {
3311 /* try each flavor specified by user */
3312 for (i
= 0; i
< server
->auth_info
.flavor_len
; i
++) {
3313 status
= nfs4_lookup_root_sec(server
, fhandle
, info
,
3314 server
->auth_info
.flavors
[i
]);
3315 if (status
== -NFS4ERR_WRONGSEC
|| status
== -EACCES
)
3320 /* no flavors specified by user, try default list */
3321 for (i
= 0; i
< ARRAY_SIZE(flav_array
); i
++) {
3322 status
= nfs4_lookup_root_sec(server
, fhandle
, info
,
3324 if (status
== -NFS4ERR_WRONGSEC
|| status
== -EACCES
)
3331 * -EACCESS could mean that the user doesn't have correct permissions
3332 * to access the mount. It could also mean that we tried to mount
3333 * with a gss auth flavor, but rpc.gssd isn't running. Either way,
3334 * existing mount programs don't handle -EACCES very well so it should
3335 * be mapped to -EPERM instead.
3337 if (status
== -EACCES
)
3343 * nfs4_proc_get_rootfh - get file handle for server's pseudoroot
3344 * @server: initialized nfs_server handle
3345 * @fhandle: we fill in the pseudo-fs root file handle
3346 * @info: we fill in an FSINFO struct
3347 * @auth_probe: probe the auth flavours
3349 * Returns zero on success, or a negative errno.
3351 int nfs4_proc_get_rootfh(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
3352 struct nfs_fsinfo
*info
,
3358 status
= nfs4_lookup_root(server
, fhandle
, info
);
3360 if (auth_probe
|| status
== NFS4ERR_WRONGSEC
)
3361 status
= server
->nfs_client
->cl_mvops
->find_root_sec(server
,
3365 status
= nfs4_server_capabilities(server
, fhandle
);
3367 status
= nfs4_do_fsinfo(server
, fhandle
, info
);
3369 return nfs4_map_errors(status
);
3372 static int nfs4_proc_get_root(struct nfs_server
*server
, struct nfs_fh
*mntfh
,
3373 struct nfs_fsinfo
*info
)
3376 struct nfs_fattr
*fattr
= info
->fattr
;
3377 struct nfs4_label
*label
= NULL
;
3379 error
= nfs4_server_capabilities(server
, mntfh
);
3381 dprintk("nfs4_get_root: getcaps error = %d\n", -error
);
3385 label
= nfs4_label_alloc(server
, GFP_KERNEL
);
3387 return PTR_ERR(label
);
3389 error
= nfs4_proc_getattr(server
, mntfh
, fattr
, label
);
3391 dprintk("nfs4_get_root: getattr error = %d\n", -error
);
3392 goto err_free_label
;
3395 if (fattr
->valid
& NFS_ATTR_FATTR_FSID
&&
3396 !nfs_fsid_equal(&server
->fsid
, &fattr
->fsid
))
3397 memcpy(&server
->fsid
, &fattr
->fsid
, sizeof(server
->fsid
));
3400 nfs4_label_free(label
);
3406 * Get locations and (maybe) other attributes of a referral.
3407 * Note that we'll actually follow the referral later when
3408 * we detect fsid mismatch in inode revalidation
3410 static int nfs4_get_referral(struct rpc_clnt
*client
, struct inode
*dir
,
3411 const struct qstr
*name
, struct nfs_fattr
*fattr
,
3412 struct nfs_fh
*fhandle
)
3414 int status
= -ENOMEM
;
3415 struct page
*page
= NULL
;
3416 struct nfs4_fs_locations
*locations
= NULL
;
3418 page
= alloc_page(GFP_KERNEL
);
3421 locations
= kmalloc(sizeof(struct nfs4_fs_locations
), GFP_KERNEL
);
3422 if (locations
== NULL
)
3425 status
= nfs4_proc_fs_locations(client
, dir
, name
, locations
, page
);
3430 * If the fsid didn't change, this is a migration event, not a
3431 * referral. Cause us to drop into the exception handler, which
3432 * will kick off migration recovery.
3434 if (nfs_fsid_equal(&NFS_SERVER(dir
)->fsid
, &locations
->fattr
.fsid
)) {
3435 dprintk("%s: server did not return a different fsid for"
3436 " a referral at %s\n", __func__
, name
->name
);
3437 status
= -NFS4ERR_MOVED
;
3440 /* Fixup attributes for the nfs_lookup() call to nfs_fhget() */
3441 nfs_fixup_referral_attributes(&locations
->fattr
);
3443 /* replace the lookup nfs_fattr with the locations nfs_fattr */
3444 memcpy(fattr
, &locations
->fattr
, sizeof(struct nfs_fattr
));
3445 memset(fhandle
, 0, sizeof(struct nfs_fh
));
3453 static int _nfs4_proc_getattr(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
3454 struct nfs_fattr
*fattr
, struct nfs4_label
*label
)
3456 struct nfs4_getattr_arg args
= {
3458 .bitmask
= server
->attr_bitmask
,
3460 struct nfs4_getattr_res res
= {
3465 struct rpc_message msg
= {
3466 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GETATTR
],
3471 args
.bitmask
= nfs4_bitmask(server
, label
);
3473 nfs_fattr_init(fattr
);
3474 return nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
3477 static int nfs4_proc_getattr(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
3478 struct nfs_fattr
*fattr
, struct nfs4_label
*label
)
3480 struct nfs4_exception exception
= { };
3483 err
= _nfs4_proc_getattr(server
, fhandle
, fattr
, label
);
3484 trace_nfs4_getattr(server
, fhandle
, fattr
, err
);
3485 err
= nfs4_handle_exception(server
, err
,
3487 } while (exception
.retry
);
3492 * The file is not closed if it is opened due to the a request to change
3493 * the size of the file. The open call will not be needed once the
3494 * VFS layer lookup-intents are implemented.
3496 * Close is called when the inode is destroyed.
3497 * If we haven't opened the file for O_WRONLY, we
3498 * need to in the size_change case to obtain a stateid.
3501 * Because OPEN is always done by name in nfsv4, it is
3502 * possible that we opened a different file by the same
3503 * name. We can recognize this race condition, but we
3504 * can't do anything about it besides returning an error.
3506 * This will be fixed with VFS changes (lookup-intent).
3509 nfs4_proc_setattr(struct dentry
*dentry
, struct nfs_fattr
*fattr
,
3510 struct iattr
*sattr
)
3512 struct inode
*inode
= d_inode(dentry
);
3513 struct rpc_cred
*cred
= NULL
;
3514 struct nfs4_state
*state
= NULL
;
3515 struct nfs4_label
*label
= NULL
;
3518 if (pnfs_ld_layoutret_on_setattr(inode
) &&
3519 sattr
->ia_valid
& ATTR_SIZE
&&
3520 sattr
->ia_size
< i_size_read(inode
))
3521 pnfs_commit_and_return_layout(inode
);
3523 nfs_fattr_init(fattr
);
3525 /* Deal with open(O_TRUNC) */
3526 if (sattr
->ia_valid
& ATTR_OPEN
)
3527 sattr
->ia_valid
&= ~(ATTR_MTIME
|ATTR_CTIME
);
3529 /* Optimization: if the end result is no change, don't RPC */
3530 if ((sattr
->ia_valid
& ~(ATTR_FILE
|ATTR_OPEN
)) == 0)
3533 /* Search for an existing open(O_WRITE) file */
3534 if (sattr
->ia_valid
& ATTR_FILE
) {
3535 struct nfs_open_context
*ctx
;
3537 ctx
= nfs_file_open_context(sattr
->ia_file
);
3544 label
= nfs4_label_alloc(NFS_SERVER(inode
), GFP_KERNEL
);
3546 return PTR_ERR(label
);
3548 status
= nfs4_do_setattr(inode
, cred
, fattr
, sattr
, state
, NULL
, label
);
3550 nfs_setattr_update_inode(inode
, sattr
, fattr
);
3551 nfs_setsecurity(inode
, fattr
, label
);
3553 nfs4_label_free(label
);
3557 static int _nfs4_proc_lookup(struct rpc_clnt
*clnt
, struct inode
*dir
,
3558 const struct qstr
*name
, struct nfs_fh
*fhandle
,
3559 struct nfs_fattr
*fattr
, struct nfs4_label
*label
)
3561 struct nfs_server
*server
= NFS_SERVER(dir
);
3563 struct nfs4_lookup_arg args
= {
3564 .bitmask
= server
->attr_bitmask
,
3565 .dir_fh
= NFS_FH(dir
),
3568 struct nfs4_lookup_res res
= {
3574 struct rpc_message msg
= {
3575 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOOKUP
],
3580 args
.bitmask
= nfs4_bitmask(server
, label
);
3582 nfs_fattr_init(fattr
);
3584 dprintk("NFS call lookup %s\n", name
->name
);
3585 status
= nfs4_call_sync(clnt
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
3586 dprintk("NFS reply lookup: %d\n", status
);
3590 static void nfs_fixup_secinfo_attributes(struct nfs_fattr
*fattr
)
3592 fattr
->valid
|= NFS_ATTR_FATTR_TYPE
| NFS_ATTR_FATTR_MODE
|
3593 NFS_ATTR_FATTR_NLINK
| NFS_ATTR_FATTR_MOUNTPOINT
;
3594 fattr
->mode
= S_IFDIR
| S_IRUGO
| S_IXUGO
;
3598 static int nfs4_proc_lookup_common(struct rpc_clnt
**clnt
, struct inode
*dir
,
3599 const struct qstr
*name
, struct nfs_fh
*fhandle
,
3600 struct nfs_fattr
*fattr
, struct nfs4_label
*label
)
3602 struct nfs4_exception exception
= { };
3603 struct rpc_clnt
*client
= *clnt
;
3606 err
= _nfs4_proc_lookup(client
, dir
, name
, fhandle
, fattr
, label
);
3607 trace_nfs4_lookup(dir
, name
, err
);
3609 case -NFS4ERR_BADNAME
:
3612 case -NFS4ERR_MOVED
:
3613 err
= nfs4_get_referral(client
, dir
, name
, fattr
, fhandle
);
3614 if (err
== -NFS4ERR_MOVED
)
3615 err
= nfs4_handle_exception(NFS_SERVER(dir
), err
, &exception
);
3617 case -NFS4ERR_WRONGSEC
:
3619 if (client
!= *clnt
)
3621 client
= nfs4_negotiate_security(client
, dir
, name
);
3623 return PTR_ERR(client
);
3625 exception
.retry
= 1;
3628 err
= nfs4_handle_exception(NFS_SERVER(dir
), err
, &exception
);
3630 } while (exception
.retry
);
3635 else if (client
!= *clnt
)
3636 rpc_shutdown_client(client
);
3641 static int nfs4_proc_lookup(struct inode
*dir
, const struct qstr
*name
,
3642 struct nfs_fh
*fhandle
, struct nfs_fattr
*fattr
,
3643 struct nfs4_label
*label
)
3646 struct rpc_clnt
*client
= NFS_CLIENT(dir
);
3648 status
= nfs4_proc_lookup_common(&client
, dir
, name
, fhandle
, fattr
, label
);
3649 if (client
!= NFS_CLIENT(dir
)) {
3650 rpc_shutdown_client(client
);
3651 nfs_fixup_secinfo_attributes(fattr
);
3657 nfs4_proc_lookup_mountpoint(struct inode
*dir
, const struct qstr
*name
,
3658 struct nfs_fh
*fhandle
, struct nfs_fattr
*fattr
)
3660 struct rpc_clnt
*client
= NFS_CLIENT(dir
);
3663 status
= nfs4_proc_lookup_common(&client
, dir
, name
, fhandle
, fattr
, NULL
);
3665 return ERR_PTR(status
);
3666 return (client
== NFS_CLIENT(dir
)) ? rpc_clone_client(client
) : client
;
3669 static int _nfs4_proc_access(struct inode
*inode
, struct nfs_access_entry
*entry
)
3671 struct nfs_server
*server
= NFS_SERVER(inode
);
3672 struct nfs4_accessargs args
= {
3673 .fh
= NFS_FH(inode
),
3674 .bitmask
= server
->cache_consistency_bitmask
,
3676 struct nfs4_accessres res
= {
3679 struct rpc_message msg
= {
3680 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_ACCESS
],
3683 .rpc_cred
= entry
->cred
,
3685 int mode
= entry
->mask
;
3689 * Determine which access bits we want to ask for...
3691 if (mode
& MAY_READ
)
3692 args
.access
|= NFS4_ACCESS_READ
;
3693 if (S_ISDIR(inode
->i_mode
)) {
3694 if (mode
& MAY_WRITE
)
3695 args
.access
|= NFS4_ACCESS_MODIFY
| NFS4_ACCESS_EXTEND
| NFS4_ACCESS_DELETE
;
3696 if (mode
& MAY_EXEC
)
3697 args
.access
|= NFS4_ACCESS_LOOKUP
;
3699 if (mode
& MAY_WRITE
)
3700 args
.access
|= NFS4_ACCESS_MODIFY
| NFS4_ACCESS_EXTEND
;
3701 if (mode
& MAY_EXEC
)
3702 args
.access
|= NFS4_ACCESS_EXECUTE
;
3705 res
.fattr
= nfs_alloc_fattr();
3706 if (res
.fattr
== NULL
)
3709 status
= nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
3711 nfs_access_set_mask(entry
, res
.access
);
3712 nfs_refresh_inode(inode
, res
.fattr
);
3714 nfs_free_fattr(res
.fattr
);
3718 static int nfs4_proc_access(struct inode
*inode
, struct nfs_access_entry
*entry
)
3720 struct nfs4_exception exception
= { };
3723 err
= _nfs4_proc_access(inode
, entry
);
3724 trace_nfs4_access(inode
, err
);
3725 err
= nfs4_handle_exception(NFS_SERVER(inode
), err
,
3727 } while (exception
.retry
);
3732 * TODO: For the time being, we don't try to get any attributes
3733 * along with any of the zero-copy operations READ, READDIR,
3736 * In the case of the first three, we want to put the GETATTR
3737 * after the read-type operation -- this is because it is hard
3738 * to predict the length of a GETATTR response in v4, and thus
3739 * align the READ data correctly. This means that the GETATTR
3740 * may end up partially falling into the page cache, and we should
3741 * shift it into the 'tail' of the xdr_buf before processing.
3742 * To do this efficiently, we need to know the total length
3743 * of data received, which doesn't seem to be available outside
3746 * In the case of WRITE, we also want to put the GETATTR after
3747 * the operation -- in this case because we want to make sure
3748 * we get the post-operation mtime and size.
3750 * Both of these changes to the XDR layer would in fact be quite
3751 * minor, but I decided to leave them for a subsequent patch.
3753 static int _nfs4_proc_readlink(struct inode
*inode
, struct page
*page
,
3754 unsigned int pgbase
, unsigned int pglen
)
3756 struct nfs4_readlink args
= {
3757 .fh
= NFS_FH(inode
),
3762 struct nfs4_readlink_res res
;
3763 struct rpc_message msg
= {
3764 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_READLINK
],
3769 return nfs4_call_sync(NFS_SERVER(inode
)->client
, NFS_SERVER(inode
), &msg
, &args
.seq_args
, &res
.seq_res
, 0);
3772 static int nfs4_proc_readlink(struct inode
*inode
, struct page
*page
,
3773 unsigned int pgbase
, unsigned int pglen
)
3775 struct nfs4_exception exception
= { };
3778 err
= _nfs4_proc_readlink(inode
, page
, pgbase
, pglen
);
3779 trace_nfs4_readlink(inode
, err
);
3780 err
= nfs4_handle_exception(NFS_SERVER(inode
), err
,
3782 } while (exception
.retry
);
3787 * This is just for mknod. open(O_CREAT) will always do ->open_context().
3790 nfs4_proc_create(struct inode
*dir
, struct dentry
*dentry
, struct iattr
*sattr
,
3793 struct nfs4_label l
, *ilabel
= NULL
;
3794 struct nfs_open_context
*ctx
;
3795 struct nfs4_state
*state
;
3798 ctx
= alloc_nfs_open_context(dentry
, FMODE_READ
);
3800 return PTR_ERR(ctx
);
3802 ilabel
= nfs4_label_init_security(dir
, dentry
, sattr
, &l
);
3804 sattr
->ia_mode
&= ~current_umask();
3805 state
= nfs4_do_open(dir
, ctx
, flags
, sattr
, ilabel
, NULL
);
3806 if (IS_ERR(state
)) {
3807 status
= PTR_ERR(state
);
3811 nfs4_label_release_security(ilabel
);
3812 put_nfs_open_context(ctx
);
3816 static int _nfs4_proc_remove(struct inode
*dir
, const struct qstr
*name
)
3818 struct nfs_server
*server
= NFS_SERVER(dir
);
3819 struct nfs_removeargs args
= {
3823 struct nfs_removeres res
= {
3826 struct rpc_message msg
= {
3827 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_REMOVE
],
3833 status
= nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 1);
3835 update_changeattr(dir
, &res
.cinfo
);
3839 static int nfs4_proc_remove(struct inode
*dir
, const struct qstr
*name
)
3841 struct nfs4_exception exception
= { };
3844 err
= _nfs4_proc_remove(dir
, name
);
3845 trace_nfs4_remove(dir
, name
, err
);
3846 err
= nfs4_handle_exception(NFS_SERVER(dir
), err
,
3848 } while (exception
.retry
);
3852 static void nfs4_proc_unlink_setup(struct rpc_message
*msg
, struct inode
*dir
)
3854 struct nfs_server
*server
= NFS_SERVER(dir
);
3855 struct nfs_removeargs
*args
= msg
->rpc_argp
;
3856 struct nfs_removeres
*res
= msg
->rpc_resp
;
3858 res
->server
= server
;
3859 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_REMOVE
];
3860 nfs4_init_sequence(&args
->seq_args
, &res
->seq_res
, 1);
3862 nfs_fattr_init(res
->dir_attr
);
3865 static void nfs4_proc_unlink_rpc_prepare(struct rpc_task
*task
, struct nfs_unlinkdata
*data
)
3867 nfs4_setup_sequence(NFS_SB(data
->dentry
->d_sb
),
3868 &data
->args
.seq_args
,
3873 static int nfs4_proc_unlink_done(struct rpc_task
*task
, struct inode
*dir
)
3875 struct nfs_unlinkdata
*data
= task
->tk_calldata
;
3876 struct nfs_removeres
*res
= &data
->res
;
3878 if (!nfs4_sequence_done(task
, &res
->seq_res
))
3880 if (nfs4_async_handle_error(task
, res
->server
, NULL
,
3881 &data
->timeout
) == -EAGAIN
)
3883 update_changeattr(dir
, &res
->cinfo
);
3887 static void nfs4_proc_rename_setup(struct rpc_message
*msg
, struct inode
*dir
)
3889 struct nfs_server
*server
= NFS_SERVER(dir
);
3890 struct nfs_renameargs
*arg
= msg
->rpc_argp
;
3891 struct nfs_renameres
*res
= msg
->rpc_resp
;
3893 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RENAME
];
3894 res
->server
= server
;
3895 nfs4_init_sequence(&arg
->seq_args
, &res
->seq_res
, 1);
3898 static void nfs4_proc_rename_rpc_prepare(struct rpc_task
*task
, struct nfs_renamedata
*data
)
3900 nfs4_setup_sequence(NFS_SERVER(data
->old_dir
),
3901 &data
->args
.seq_args
,
3906 static int nfs4_proc_rename_done(struct rpc_task
*task
, struct inode
*old_dir
,
3907 struct inode
*new_dir
)
3909 struct nfs_renamedata
*data
= task
->tk_calldata
;
3910 struct nfs_renameres
*res
= &data
->res
;
3912 if (!nfs4_sequence_done(task
, &res
->seq_res
))
3914 if (nfs4_async_handle_error(task
, res
->server
, NULL
, &data
->timeout
) == -EAGAIN
)
3917 update_changeattr(old_dir
, &res
->old_cinfo
);
3918 update_changeattr(new_dir
, &res
->new_cinfo
);
3922 static int _nfs4_proc_link(struct inode
*inode
, struct inode
*dir
, const struct qstr
*name
)
3924 struct nfs_server
*server
= NFS_SERVER(inode
);
3925 struct nfs4_link_arg arg
= {
3926 .fh
= NFS_FH(inode
),
3927 .dir_fh
= NFS_FH(dir
),
3929 .bitmask
= server
->attr_bitmask
,
3931 struct nfs4_link_res res
= {
3935 struct rpc_message msg
= {
3936 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LINK
],
3940 int status
= -ENOMEM
;
3942 res
.fattr
= nfs_alloc_fattr();
3943 if (res
.fattr
== NULL
)
3946 res
.label
= nfs4_label_alloc(server
, GFP_KERNEL
);
3947 if (IS_ERR(res
.label
)) {
3948 status
= PTR_ERR(res
.label
);
3951 arg
.bitmask
= nfs4_bitmask(server
, res
.label
);
3953 status
= nfs4_call_sync(server
->client
, server
, &msg
, &arg
.seq_args
, &res
.seq_res
, 1);
3955 update_changeattr(dir
, &res
.cinfo
);
3956 status
= nfs_post_op_update_inode(inode
, res
.fattr
);
3958 nfs_setsecurity(inode
, res
.fattr
, res
.label
);
3962 nfs4_label_free(res
.label
);
3965 nfs_free_fattr(res
.fattr
);
3969 static int nfs4_proc_link(struct inode
*inode
, struct inode
*dir
, const struct qstr
*name
)
3971 struct nfs4_exception exception
= { };
3974 err
= nfs4_handle_exception(NFS_SERVER(inode
),
3975 _nfs4_proc_link(inode
, dir
, name
),
3977 } while (exception
.retry
);
3981 struct nfs4_createdata
{
3982 struct rpc_message msg
;
3983 struct nfs4_create_arg arg
;
3984 struct nfs4_create_res res
;
3986 struct nfs_fattr fattr
;
3987 struct nfs4_label
*label
;
3990 static struct nfs4_createdata
*nfs4_alloc_createdata(struct inode
*dir
,
3991 const struct qstr
*name
, struct iattr
*sattr
, u32 ftype
)
3993 struct nfs4_createdata
*data
;
3995 data
= kzalloc(sizeof(*data
), GFP_KERNEL
);
3997 struct nfs_server
*server
= NFS_SERVER(dir
);
3999 data
->label
= nfs4_label_alloc(server
, GFP_KERNEL
);
4000 if (IS_ERR(data
->label
))
4003 data
->msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_CREATE
];
4004 data
->msg
.rpc_argp
= &data
->arg
;
4005 data
->msg
.rpc_resp
= &data
->res
;
4006 data
->arg
.dir_fh
= NFS_FH(dir
);
4007 data
->arg
.server
= server
;
4008 data
->arg
.name
= name
;
4009 data
->arg
.attrs
= sattr
;
4010 data
->arg
.ftype
= ftype
;
4011 data
->arg
.bitmask
= nfs4_bitmask(server
, data
->label
);
4012 data
->res
.server
= server
;
4013 data
->res
.fh
= &data
->fh
;
4014 data
->res
.fattr
= &data
->fattr
;
4015 data
->res
.label
= data
->label
;
4016 nfs_fattr_init(data
->res
.fattr
);
4024 static int nfs4_do_create(struct inode
*dir
, struct dentry
*dentry
, struct nfs4_createdata
*data
)
4026 int status
= nfs4_call_sync(NFS_SERVER(dir
)->client
, NFS_SERVER(dir
), &data
->msg
,
4027 &data
->arg
.seq_args
, &data
->res
.seq_res
, 1);
4029 update_changeattr(dir
, &data
->res
.dir_cinfo
);
4030 status
= nfs_instantiate(dentry
, data
->res
.fh
, data
->res
.fattr
, data
->res
.label
);
4035 static void nfs4_free_createdata(struct nfs4_createdata
*data
)
4037 nfs4_label_free(data
->label
);
4041 static int _nfs4_proc_symlink(struct inode
*dir
, struct dentry
*dentry
,
4042 struct page
*page
, unsigned int len
, struct iattr
*sattr
,
4043 struct nfs4_label
*label
)
4045 struct nfs4_createdata
*data
;
4046 int status
= -ENAMETOOLONG
;
4048 if (len
> NFS4_MAXPATHLEN
)
4052 data
= nfs4_alloc_createdata(dir
, &dentry
->d_name
, sattr
, NF4LNK
);
4056 data
->msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SYMLINK
];
4057 data
->arg
.u
.symlink
.pages
= &page
;
4058 data
->arg
.u
.symlink
.len
= len
;
4059 data
->arg
.label
= label
;
4061 status
= nfs4_do_create(dir
, dentry
, data
);
4063 nfs4_free_createdata(data
);
4068 static int nfs4_proc_symlink(struct inode
*dir
, struct dentry
*dentry
,
4069 struct page
*page
, unsigned int len
, struct iattr
*sattr
)
4071 struct nfs4_exception exception
= { };
4072 struct nfs4_label l
, *label
= NULL
;
4075 label
= nfs4_label_init_security(dir
, dentry
, sattr
, &l
);
4078 err
= _nfs4_proc_symlink(dir
, dentry
, page
, len
, sattr
, label
);
4079 trace_nfs4_symlink(dir
, &dentry
->d_name
, err
);
4080 err
= nfs4_handle_exception(NFS_SERVER(dir
), err
,
4082 } while (exception
.retry
);
4084 nfs4_label_release_security(label
);
4088 static int _nfs4_proc_mkdir(struct inode
*dir
, struct dentry
*dentry
,
4089 struct iattr
*sattr
, struct nfs4_label
*label
)
4091 struct nfs4_createdata
*data
;
4092 int status
= -ENOMEM
;
4094 data
= nfs4_alloc_createdata(dir
, &dentry
->d_name
, sattr
, NF4DIR
);
4098 data
->arg
.label
= label
;
4099 status
= nfs4_do_create(dir
, dentry
, data
);
4101 nfs4_free_createdata(data
);
4106 static int nfs4_proc_mkdir(struct inode
*dir
, struct dentry
*dentry
,
4107 struct iattr
*sattr
)
4109 struct nfs4_exception exception
= { };
4110 struct nfs4_label l
, *label
= NULL
;
4113 label
= nfs4_label_init_security(dir
, dentry
, sattr
, &l
);
4115 sattr
->ia_mode
&= ~current_umask();
4117 err
= _nfs4_proc_mkdir(dir
, dentry
, sattr
, label
);
4118 trace_nfs4_mkdir(dir
, &dentry
->d_name
, err
);
4119 err
= nfs4_handle_exception(NFS_SERVER(dir
), err
,
4121 } while (exception
.retry
);
4122 nfs4_label_release_security(label
);
4127 static int _nfs4_proc_readdir(struct dentry
*dentry
, struct rpc_cred
*cred
,
4128 u64 cookie
, struct page
**pages
, unsigned int count
, int plus
)
4130 struct inode
*dir
= d_inode(dentry
);
4131 struct nfs4_readdir_arg args
= {
4136 .bitmask
= NFS_SERVER(d_inode(dentry
))->attr_bitmask
,
4139 struct nfs4_readdir_res res
;
4140 struct rpc_message msg
= {
4141 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_READDIR
],
4148 dprintk("%s: dentry = %pd2, cookie = %Lu\n", __func__
,
4150 (unsigned long long)cookie
);
4151 nfs4_setup_readdir(cookie
, NFS_I(dir
)->cookieverf
, dentry
, &args
);
4152 res
.pgbase
= args
.pgbase
;
4153 status
= nfs4_call_sync(NFS_SERVER(dir
)->client
, NFS_SERVER(dir
), &msg
, &args
.seq_args
, &res
.seq_res
, 0);
4155 memcpy(NFS_I(dir
)->cookieverf
, res
.verifier
.data
, NFS4_VERIFIER_SIZE
);
4156 status
+= args
.pgbase
;
4159 nfs_invalidate_atime(dir
);
4161 dprintk("%s: returns %d\n", __func__
, status
);
4165 static int nfs4_proc_readdir(struct dentry
*dentry
, struct rpc_cred
*cred
,
4166 u64 cookie
, struct page
**pages
, unsigned int count
, int plus
)
4168 struct nfs4_exception exception
= { };
4171 err
= _nfs4_proc_readdir(dentry
, cred
, cookie
,
4172 pages
, count
, plus
);
4173 trace_nfs4_readdir(d_inode(dentry
), err
);
4174 err
= nfs4_handle_exception(NFS_SERVER(d_inode(dentry
)), err
,
4176 } while (exception
.retry
);
4180 static int _nfs4_proc_mknod(struct inode
*dir
, struct dentry
*dentry
,
4181 struct iattr
*sattr
, struct nfs4_label
*label
, dev_t rdev
)
4183 struct nfs4_createdata
*data
;
4184 int mode
= sattr
->ia_mode
;
4185 int status
= -ENOMEM
;
4187 data
= nfs4_alloc_createdata(dir
, &dentry
->d_name
, sattr
, NF4SOCK
);
4192 data
->arg
.ftype
= NF4FIFO
;
4193 else if (S_ISBLK(mode
)) {
4194 data
->arg
.ftype
= NF4BLK
;
4195 data
->arg
.u
.device
.specdata1
= MAJOR(rdev
);
4196 data
->arg
.u
.device
.specdata2
= MINOR(rdev
);
4198 else if (S_ISCHR(mode
)) {
4199 data
->arg
.ftype
= NF4CHR
;
4200 data
->arg
.u
.device
.specdata1
= MAJOR(rdev
);
4201 data
->arg
.u
.device
.specdata2
= MINOR(rdev
);
4202 } else if (!S_ISSOCK(mode
)) {
4207 data
->arg
.label
= label
;
4208 status
= nfs4_do_create(dir
, dentry
, data
);
4210 nfs4_free_createdata(data
);
4215 static int nfs4_proc_mknod(struct inode
*dir
, struct dentry
*dentry
,
4216 struct iattr
*sattr
, dev_t rdev
)
4218 struct nfs4_exception exception
= { };
4219 struct nfs4_label l
, *label
= NULL
;
4222 label
= nfs4_label_init_security(dir
, dentry
, sattr
, &l
);
4224 sattr
->ia_mode
&= ~current_umask();
4226 err
= _nfs4_proc_mknod(dir
, dentry
, sattr
, label
, rdev
);
4227 trace_nfs4_mknod(dir
, &dentry
->d_name
, err
);
4228 err
= nfs4_handle_exception(NFS_SERVER(dir
), err
,
4230 } while (exception
.retry
);
4232 nfs4_label_release_security(label
);
4237 static int _nfs4_proc_statfs(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
4238 struct nfs_fsstat
*fsstat
)
4240 struct nfs4_statfs_arg args
= {
4242 .bitmask
= server
->attr_bitmask
,
4244 struct nfs4_statfs_res res
= {
4247 struct rpc_message msg
= {
4248 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_STATFS
],
4253 nfs_fattr_init(fsstat
->fattr
);
4254 return nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
4257 static int nfs4_proc_statfs(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fsstat
*fsstat
)
4259 struct nfs4_exception exception
= { };
4262 err
= nfs4_handle_exception(server
,
4263 _nfs4_proc_statfs(server
, fhandle
, fsstat
),
4265 } while (exception
.retry
);
4269 static int _nfs4_do_fsinfo(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
4270 struct nfs_fsinfo
*fsinfo
)
4272 struct nfs4_fsinfo_arg args
= {
4274 .bitmask
= server
->attr_bitmask
,
4276 struct nfs4_fsinfo_res res
= {
4279 struct rpc_message msg
= {
4280 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_FSINFO
],
4285 return nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
4288 static int nfs4_do_fsinfo(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fsinfo
*fsinfo
)
4290 struct nfs4_exception exception
= { };
4291 unsigned long now
= jiffies
;
4295 err
= _nfs4_do_fsinfo(server
, fhandle
, fsinfo
);
4296 trace_nfs4_fsinfo(server
, fhandle
, fsinfo
->fattr
, err
);
4298 nfs4_set_lease_period(server
->nfs_client
,
4299 fsinfo
->lease_time
* HZ
,
4303 err
= nfs4_handle_exception(server
, err
, &exception
);
4304 } while (exception
.retry
);
4308 static int nfs4_proc_fsinfo(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fsinfo
*fsinfo
)
4312 nfs_fattr_init(fsinfo
->fattr
);
4313 error
= nfs4_do_fsinfo(server
, fhandle
, fsinfo
);
4315 /* block layout checks this! */
4316 server
->pnfs_blksize
= fsinfo
->blksize
;
4317 set_pnfs_layoutdriver(server
, fhandle
, fsinfo
);
4323 static int _nfs4_proc_pathconf(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
4324 struct nfs_pathconf
*pathconf
)
4326 struct nfs4_pathconf_arg args
= {
4328 .bitmask
= server
->attr_bitmask
,
4330 struct nfs4_pathconf_res res
= {
4331 .pathconf
= pathconf
,
4333 struct rpc_message msg
= {
4334 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_PATHCONF
],
4339 /* None of the pathconf attributes are mandatory to implement */
4340 if ((args
.bitmask
[0] & nfs4_pathconf_bitmap
[0]) == 0) {
4341 memset(pathconf
, 0, sizeof(*pathconf
));
4345 nfs_fattr_init(pathconf
->fattr
);
4346 return nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
4349 static int nfs4_proc_pathconf(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
4350 struct nfs_pathconf
*pathconf
)
4352 struct nfs4_exception exception
= { };
4356 err
= nfs4_handle_exception(server
,
4357 _nfs4_proc_pathconf(server
, fhandle
, pathconf
),
4359 } while (exception
.retry
);
4363 int nfs4_set_rw_stateid(nfs4_stateid
*stateid
,
4364 const struct nfs_open_context
*ctx
,
4365 const struct nfs_lock_context
*l_ctx
,
4368 const struct nfs_lockowner
*lockowner
= NULL
;
4371 lockowner
= &l_ctx
->lockowner
;
4372 return nfs4_select_rw_stateid(ctx
->state
, fmode
, lockowner
, stateid
, NULL
);
4374 EXPORT_SYMBOL_GPL(nfs4_set_rw_stateid
);
4376 static bool nfs4_stateid_is_current(nfs4_stateid
*stateid
,
4377 const struct nfs_open_context
*ctx
,
4378 const struct nfs_lock_context
*l_ctx
,
4381 nfs4_stateid current_stateid
;
4383 /* If the current stateid represents a lost lock, then exit */
4384 if (nfs4_set_rw_stateid(¤t_stateid
, ctx
, l_ctx
, fmode
) == -EIO
)
4386 return nfs4_stateid_match(stateid
, ¤t_stateid
);
4389 static bool nfs4_error_stateid_expired(int err
)
4392 case -NFS4ERR_DELEG_REVOKED
:
4393 case -NFS4ERR_ADMIN_REVOKED
:
4394 case -NFS4ERR_BAD_STATEID
:
4395 case -NFS4ERR_STALE_STATEID
:
4396 case -NFS4ERR_OLD_STATEID
:
4397 case -NFS4ERR_OPENMODE
:
4398 case -NFS4ERR_EXPIRED
:
4404 void __nfs4_read_done_cb(struct nfs_pgio_header
*hdr
)
4406 nfs_invalidate_atime(hdr
->inode
);
4409 static int nfs4_read_done_cb(struct rpc_task
*task
, struct nfs_pgio_header
*hdr
)
4411 struct nfs_server
*server
= NFS_SERVER(hdr
->inode
);
4413 trace_nfs4_read(hdr
, task
->tk_status
);
4414 if (nfs4_async_handle_error(task
, server
,
4415 hdr
->args
.context
->state
,
4417 rpc_restart_call_prepare(task
);
4421 __nfs4_read_done_cb(hdr
);
4422 if (task
->tk_status
> 0)
4423 renew_lease(server
, hdr
->timestamp
);
4427 static bool nfs4_read_stateid_changed(struct rpc_task
*task
,
4428 struct nfs_pgio_args
*args
)
4431 if (!nfs4_error_stateid_expired(task
->tk_status
) ||
4432 nfs4_stateid_is_current(&args
->stateid
,
4437 rpc_restart_call_prepare(task
);
4441 static int nfs4_read_done(struct rpc_task
*task
, struct nfs_pgio_header
*hdr
)
4444 dprintk("--> %s\n", __func__
);
4446 if (!nfs4_sequence_done(task
, &hdr
->res
.seq_res
))
4448 if (nfs4_read_stateid_changed(task
, &hdr
->args
))
4450 return hdr
->pgio_done_cb
? hdr
->pgio_done_cb(task
, hdr
) :
4451 nfs4_read_done_cb(task
, hdr
);
4454 static void nfs4_proc_read_setup(struct nfs_pgio_header
*hdr
,
4455 struct rpc_message
*msg
)
4457 hdr
->timestamp
= jiffies
;
4458 if (!hdr
->pgio_done_cb
)
4459 hdr
->pgio_done_cb
= nfs4_read_done_cb
;
4460 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_READ
];
4461 nfs4_init_sequence(&hdr
->args
.seq_args
, &hdr
->res
.seq_res
, 0);
4464 static int nfs4_proc_pgio_rpc_prepare(struct rpc_task
*task
,
4465 struct nfs_pgio_header
*hdr
)
4467 if (nfs4_setup_sequence(NFS_SERVER(hdr
->inode
),
4468 &hdr
->args
.seq_args
,
4472 if (nfs4_set_rw_stateid(&hdr
->args
.stateid
, hdr
->args
.context
,
4473 hdr
->args
.lock_context
,
4474 hdr
->rw_ops
->rw_mode
) == -EIO
)
4476 if (unlikely(test_bit(NFS_CONTEXT_BAD
, &hdr
->args
.context
->flags
)))
4481 static int nfs4_write_done_cb(struct rpc_task
*task
,
4482 struct nfs_pgio_header
*hdr
)
4484 struct inode
*inode
= hdr
->inode
;
4486 trace_nfs4_write(hdr
, task
->tk_status
);
4487 if (nfs4_async_handle_error(task
, NFS_SERVER(inode
),
4488 hdr
->args
.context
->state
,
4490 rpc_restart_call_prepare(task
);
4493 if (task
->tk_status
>= 0) {
4494 renew_lease(NFS_SERVER(inode
), hdr
->timestamp
);
4495 nfs_writeback_update_inode(hdr
);
4500 static bool nfs4_write_stateid_changed(struct rpc_task
*task
,
4501 struct nfs_pgio_args
*args
)
4504 if (!nfs4_error_stateid_expired(task
->tk_status
) ||
4505 nfs4_stateid_is_current(&args
->stateid
,
4510 rpc_restart_call_prepare(task
);
4514 static int nfs4_write_done(struct rpc_task
*task
, struct nfs_pgio_header
*hdr
)
4516 if (!nfs4_sequence_done(task
, &hdr
->res
.seq_res
))
4518 if (nfs4_write_stateid_changed(task
, &hdr
->args
))
4520 return hdr
->pgio_done_cb
? hdr
->pgio_done_cb(task
, hdr
) :
4521 nfs4_write_done_cb(task
, hdr
);
4525 bool nfs4_write_need_cache_consistency_data(struct nfs_pgio_header
*hdr
)
4527 /* Don't request attributes for pNFS or O_DIRECT writes */
4528 if (hdr
->ds_clp
!= NULL
|| hdr
->dreq
!= NULL
)
4530 /* Otherwise, request attributes if and only if we don't hold
4533 return nfs4_have_delegation(hdr
->inode
, FMODE_READ
) == 0;
4536 static void nfs4_proc_write_setup(struct nfs_pgio_header
*hdr
,
4537 struct rpc_message
*msg
)
4539 struct nfs_server
*server
= NFS_SERVER(hdr
->inode
);
4541 if (!nfs4_write_need_cache_consistency_data(hdr
)) {
4542 hdr
->args
.bitmask
= NULL
;
4543 hdr
->res
.fattr
= NULL
;
4545 hdr
->args
.bitmask
= server
->cache_consistency_bitmask
;
4547 if (!hdr
->pgio_done_cb
)
4548 hdr
->pgio_done_cb
= nfs4_write_done_cb
;
4549 hdr
->res
.server
= server
;
4550 hdr
->timestamp
= jiffies
;
4552 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_WRITE
];
4553 nfs4_init_sequence(&hdr
->args
.seq_args
, &hdr
->res
.seq_res
, 1);
4556 static void nfs4_proc_commit_rpc_prepare(struct rpc_task
*task
, struct nfs_commit_data
*data
)
4558 nfs4_setup_sequence(NFS_SERVER(data
->inode
),
4559 &data
->args
.seq_args
,
4564 static int nfs4_commit_done_cb(struct rpc_task
*task
, struct nfs_commit_data
*data
)
4566 struct inode
*inode
= data
->inode
;
4568 trace_nfs4_commit(data
, task
->tk_status
);
4569 if (nfs4_async_handle_error(task
, NFS_SERVER(inode
),
4570 NULL
, NULL
) == -EAGAIN
) {
4571 rpc_restart_call_prepare(task
);
4577 static int nfs4_commit_done(struct rpc_task
*task
, struct nfs_commit_data
*data
)
4579 if (!nfs4_sequence_done(task
, &data
->res
.seq_res
))
4581 return data
->commit_done_cb(task
, data
);
4584 static void nfs4_proc_commit_setup(struct nfs_commit_data
*data
, struct rpc_message
*msg
)
4586 struct nfs_server
*server
= NFS_SERVER(data
->inode
);
4588 if (data
->commit_done_cb
== NULL
)
4589 data
->commit_done_cb
= nfs4_commit_done_cb
;
4590 data
->res
.server
= server
;
4591 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_COMMIT
];
4592 nfs4_init_sequence(&data
->args
.seq_args
, &data
->res
.seq_res
, 1);
4595 struct nfs4_renewdata
{
4596 struct nfs_client
*client
;
4597 unsigned long timestamp
;
4601 * nfs4_proc_async_renew(): This is not one of the nfs_rpc_ops; it is a special
4602 * standalone procedure for queueing an asynchronous RENEW.
4604 static void nfs4_renew_release(void *calldata
)
4606 struct nfs4_renewdata
*data
= calldata
;
4607 struct nfs_client
*clp
= data
->client
;
4609 if (atomic_read(&clp
->cl_count
) > 1)
4610 nfs4_schedule_state_renewal(clp
);
4611 nfs_put_client(clp
);
4615 static void nfs4_renew_done(struct rpc_task
*task
, void *calldata
)
4617 struct nfs4_renewdata
*data
= calldata
;
4618 struct nfs_client
*clp
= data
->client
;
4619 unsigned long timestamp
= data
->timestamp
;
4621 trace_nfs4_renew_async(clp
, task
->tk_status
);
4622 switch (task
->tk_status
) {
4625 case -NFS4ERR_LEASE_MOVED
:
4626 nfs4_schedule_lease_moved_recovery(clp
);
4629 /* Unless we're shutting down, schedule state recovery! */
4630 if (test_bit(NFS_CS_RENEWD
, &clp
->cl_res_state
) == 0)
4632 if (task
->tk_status
!= NFS4ERR_CB_PATH_DOWN
) {
4633 nfs4_schedule_lease_recovery(clp
);
4636 nfs4_schedule_path_down_recovery(clp
);
4638 do_renew_lease(clp
, timestamp
);
4641 static const struct rpc_call_ops nfs4_renew_ops
= {
4642 .rpc_call_done
= nfs4_renew_done
,
4643 .rpc_release
= nfs4_renew_release
,
4646 static int nfs4_proc_async_renew(struct nfs_client
*clp
, struct rpc_cred
*cred
, unsigned renew_flags
)
4648 struct rpc_message msg
= {
4649 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RENEW
],
4653 struct nfs4_renewdata
*data
;
4655 if (renew_flags
== 0)
4657 if (!atomic_inc_not_zero(&clp
->cl_count
))
4659 data
= kmalloc(sizeof(*data
), GFP_NOFS
);
4663 data
->timestamp
= jiffies
;
4664 return rpc_call_async(clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
,
4665 &nfs4_renew_ops
, data
);
4668 static int nfs4_proc_renew(struct nfs_client
*clp
, struct rpc_cred
*cred
)
4670 struct rpc_message msg
= {
4671 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RENEW
],
4675 unsigned long now
= jiffies
;
4678 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
4681 do_renew_lease(clp
, now
);
4685 static inline int nfs4_server_supports_acls(struct nfs_server
*server
)
4687 return server
->caps
& NFS_CAP_ACLS
;
4690 /* Assuming that XATTR_SIZE_MAX is a multiple of PAGE_SIZE, and that
4691 * it's OK to put sizeof(void) * (XATTR_SIZE_MAX/PAGE_SIZE) bytes on
4694 #define NFS4ACL_MAXPAGES DIV_ROUND_UP(XATTR_SIZE_MAX, PAGE_SIZE)
4696 static int buf_to_pages_noslab(const void *buf
, size_t buflen
,
4697 struct page
**pages
)
4699 struct page
*newpage
, **spages
;
4705 len
= min_t(size_t, PAGE_SIZE
, buflen
);
4706 newpage
= alloc_page(GFP_KERNEL
);
4708 if (newpage
== NULL
)
4710 memcpy(page_address(newpage
), buf
, len
);
4715 } while (buflen
!= 0);
4721 __free_page(spages
[rc
-1]);
4725 struct nfs4_cached_acl
{
4731 static void nfs4_set_cached_acl(struct inode
*inode
, struct nfs4_cached_acl
*acl
)
4733 struct nfs_inode
*nfsi
= NFS_I(inode
);
4735 spin_lock(&inode
->i_lock
);
4736 kfree(nfsi
->nfs4_acl
);
4737 nfsi
->nfs4_acl
= acl
;
4738 spin_unlock(&inode
->i_lock
);
4741 static void nfs4_zap_acl_attr(struct inode
*inode
)
4743 nfs4_set_cached_acl(inode
, NULL
);
4746 static inline ssize_t
nfs4_read_cached_acl(struct inode
*inode
, char *buf
, size_t buflen
)
4748 struct nfs_inode
*nfsi
= NFS_I(inode
);
4749 struct nfs4_cached_acl
*acl
;
4752 spin_lock(&inode
->i_lock
);
4753 acl
= nfsi
->nfs4_acl
;
4756 if (buf
== NULL
) /* user is just asking for length */
4758 if (acl
->cached
== 0)
4760 ret
= -ERANGE
; /* see getxattr(2) man page */
4761 if (acl
->len
> buflen
)
4763 memcpy(buf
, acl
->data
, acl
->len
);
4767 spin_unlock(&inode
->i_lock
);
4771 static void nfs4_write_cached_acl(struct inode
*inode
, struct page
**pages
, size_t pgbase
, size_t acl_len
)
4773 struct nfs4_cached_acl
*acl
;
4774 size_t buflen
= sizeof(*acl
) + acl_len
;
4776 if (buflen
<= PAGE_SIZE
) {
4777 acl
= kmalloc(buflen
, GFP_KERNEL
);
4781 _copy_from_pages(acl
->data
, pages
, pgbase
, acl_len
);
4783 acl
= kmalloc(sizeof(*acl
), GFP_KERNEL
);
4790 nfs4_set_cached_acl(inode
, acl
);
4794 * The getxattr API returns the required buffer length when called with a
4795 * NULL buf. The NFSv4 acl tool then calls getxattr again after allocating
4796 * the required buf. On a NULL buf, we send a page of data to the server
4797 * guessing that the ACL request can be serviced by a page. If so, we cache
4798 * up to the page of ACL data, and the 2nd call to getxattr is serviced by
4799 * the cache. If not so, we throw away the page, and cache the required
4800 * length. The next getxattr call will then produce another round trip to
4801 * the server, this time with the input buf of the required size.
4803 static ssize_t
__nfs4_get_acl_uncached(struct inode
*inode
, void *buf
, size_t buflen
)
4805 struct page
*pages
[NFS4ACL_MAXPAGES
] = {NULL
, };
4806 struct nfs_getaclargs args
= {
4807 .fh
= NFS_FH(inode
),
4811 struct nfs_getaclres res
= {
4814 struct rpc_message msg
= {
4815 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GETACL
],
4819 unsigned int npages
= DIV_ROUND_UP(buflen
, PAGE_SIZE
);
4820 int ret
= -ENOMEM
, i
;
4822 /* As long as we're doing a round trip to the server anyway,
4823 * let's be prepared for a page of acl data. */
4826 if (npages
> ARRAY_SIZE(pages
))
4829 for (i
= 0; i
< npages
; i
++) {
4830 pages
[i
] = alloc_page(GFP_KERNEL
);
4835 /* for decoding across pages */
4836 res
.acl_scratch
= alloc_page(GFP_KERNEL
);
4837 if (!res
.acl_scratch
)
4840 args
.acl_len
= npages
* PAGE_SIZE
;
4842 dprintk("%s buf %p buflen %zu npages %d args.acl_len %zu\n",
4843 __func__
, buf
, buflen
, npages
, args
.acl_len
);
4844 ret
= nfs4_call_sync(NFS_SERVER(inode
)->client
, NFS_SERVER(inode
),
4845 &msg
, &args
.seq_args
, &res
.seq_res
, 0);
4849 /* Handle the case where the passed-in buffer is too short */
4850 if (res
.acl_flags
& NFS4_ACL_TRUNC
) {
4851 /* Did the user only issue a request for the acl length? */
4857 nfs4_write_cached_acl(inode
, pages
, res
.acl_data_offset
, res
.acl_len
);
4859 if (res
.acl_len
> buflen
) {
4863 _copy_from_pages(buf
, pages
, res
.acl_data_offset
, res
.acl_len
);
4868 for (i
= 0; i
< npages
; i
++)
4870 __free_page(pages
[i
]);
4871 if (res
.acl_scratch
)
4872 __free_page(res
.acl_scratch
);
4876 static ssize_t
nfs4_get_acl_uncached(struct inode
*inode
, void *buf
, size_t buflen
)
4878 struct nfs4_exception exception
= { };
4881 ret
= __nfs4_get_acl_uncached(inode
, buf
, buflen
);
4882 trace_nfs4_get_acl(inode
, ret
);
4885 ret
= nfs4_handle_exception(NFS_SERVER(inode
), ret
, &exception
);
4886 } while (exception
.retry
);
4890 static ssize_t
nfs4_proc_get_acl(struct inode
*inode
, void *buf
, size_t buflen
)
4892 struct nfs_server
*server
= NFS_SERVER(inode
);
4895 if (!nfs4_server_supports_acls(server
))
4897 ret
= nfs_revalidate_inode(server
, inode
);
4900 if (NFS_I(inode
)->cache_validity
& NFS_INO_INVALID_ACL
)
4901 nfs_zap_acl_cache(inode
);
4902 ret
= nfs4_read_cached_acl(inode
, buf
, buflen
);
4904 /* -ENOENT is returned if there is no ACL or if there is an ACL
4905 * but no cached acl data, just the acl length */
4907 return nfs4_get_acl_uncached(inode
, buf
, buflen
);
4910 static int __nfs4_proc_set_acl(struct inode
*inode
, const void *buf
, size_t buflen
)
4912 struct nfs_server
*server
= NFS_SERVER(inode
);
4913 struct page
*pages
[NFS4ACL_MAXPAGES
];
4914 struct nfs_setaclargs arg
= {
4915 .fh
= NFS_FH(inode
),
4919 struct nfs_setaclres res
;
4920 struct rpc_message msg
= {
4921 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETACL
],
4925 unsigned int npages
= DIV_ROUND_UP(buflen
, PAGE_SIZE
);
4928 if (!nfs4_server_supports_acls(server
))
4930 if (npages
> ARRAY_SIZE(pages
))
4932 i
= buf_to_pages_noslab(buf
, buflen
, arg
.acl_pages
);
4935 nfs4_inode_return_delegation(inode
);
4936 ret
= nfs4_call_sync(server
->client
, server
, &msg
, &arg
.seq_args
, &res
.seq_res
, 1);
4939 * Free each page after tx, so the only ref left is
4940 * held by the network stack
4943 put_page(pages
[i
-1]);
4946 * Acl update can result in inode attribute update.
4947 * so mark the attribute cache invalid.
4949 spin_lock(&inode
->i_lock
);
4950 NFS_I(inode
)->cache_validity
|= NFS_INO_INVALID_ATTR
;
4951 spin_unlock(&inode
->i_lock
);
4952 nfs_access_zap_cache(inode
);
4953 nfs_zap_acl_cache(inode
);
4957 static int nfs4_proc_set_acl(struct inode
*inode
, const void *buf
, size_t buflen
)
4959 struct nfs4_exception exception
= { };
4962 err
= __nfs4_proc_set_acl(inode
, buf
, buflen
);
4963 trace_nfs4_set_acl(inode
, err
);
4964 err
= nfs4_handle_exception(NFS_SERVER(inode
), err
,
4966 } while (exception
.retry
);
4970 #ifdef CONFIG_NFS_V4_SECURITY_LABEL
4971 static int _nfs4_get_security_label(struct inode
*inode
, void *buf
,
4974 struct nfs_server
*server
= NFS_SERVER(inode
);
4975 struct nfs_fattr fattr
;
4976 struct nfs4_label label
= {0, 0, buflen
, buf
};
4978 u32 bitmask
[3] = { 0, 0, FATTR4_WORD2_SECURITY_LABEL
};
4979 struct nfs4_getattr_arg arg
= {
4980 .fh
= NFS_FH(inode
),
4983 struct nfs4_getattr_res res
= {
4988 struct rpc_message msg
= {
4989 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GETATTR
],
4995 nfs_fattr_init(&fattr
);
4997 ret
= nfs4_call_sync(server
->client
, server
, &msg
, &arg
.seq_args
, &res
.seq_res
, 0);
5000 if (!(fattr
.valid
& NFS_ATTR_FATTR_V4_SECURITY_LABEL
))
5002 if (buflen
< label
.len
)
5007 static int nfs4_get_security_label(struct inode
*inode
, void *buf
,
5010 struct nfs4_exception exception
= { };
5013 if (!nfs_server_capable(inode
, NFS_CAP_SECURITY_LABEL
))
5017 err
= _nfs4_get_security_label(inode
, buf
, buflen
);
5018 trace_nfs4_get_security_label(inode
, err
);
5019 err
= nfs4_handle_exception(NFS_SERVER(inode
), err
,
5021 } while (exception
.retry
);
5025 static int _nfs4_do_set_security_label(struct inode
*inode
,
5026 struct nfs4_label
*ilabel
,
5027 struct nfs_fattr
*fattr
,
5028 struct nfs4_label
*olabel
)
5031 struct iattr sattr
= {0};
5032 struct nfs_server
*server
= NFS_SERVER(inode
);
5033 const u32 bitmask
[3] = { 0, 0, FATTR4_WORD2_SECURITY_LABEL
};
5034 struct nfs_setattrargs arg
= {
5035 .fh
= NFS_FH(inode
),
5041 struct nfs_setattrres res
= {
5046 struct rpc_message msg
= {
5047 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETATTR
],
5053 nfs4_stateid_copy(&arg
.stateid
, &zero_stateid
);
5055 status
= nfs4_call_sync(server
->client
, server
, &msg
, &arg
.seq_args
, &res
.seq_res
, 1);
5057 dprintk("%s failed: %d\n", __func__
, status
);
5062 static int nfs4_do_set_security_label(struct inode
*inode
,
5063 struct nfs4_label
*ilabel
,
5064 struct nfs_fattr
*fattr
,
5065 struct nfs4_label
*olabel
)
5067 struct nfs4_exception exception
= { };
5071 err
= _nfs4_do_set_security_label(inode
, ilabel
,
5073 trace_nfs4_set_security_label(inode
, err
);
5074 err
= nfs4_handle_exception(NFS_SERVER(inode
), err
,
5076 } while (exception
.retry
);
5081 nfs4_set_security_label(struct inode
*inode
, const void *buf
, size_t buflen
)
5083 struct nfs4_label ilabel
, *olabel
= NULL
;
5084 struct nfs_fattr fattr
;
5085 struct rpc_cred
*cred
;
5088 if (!nfs_server_capable(inode
, NFS_CAP_SECURITY_LABEL
))
5091 nfs_fattr_init(&fattr
);
5095 ilabel
.label
= (char *)buf
;
5096 ilabel
.len
= buflen
;
5098 cred
= rpc_lookup_cred();
5100 return PTR_ERR(cred
);
5102 olabel
= nfs4_label_alloc(NFS_SERVER(inode
), GFP_KERNEL
);
5103 if (IS_ERR(olabel
)) {
5104 status
= -PTR_ERR(olabel
);
5108 status
= nfs4_do_set_security_label(inode
, &ilabel
, &fattr
, olabel
);
5110 nfs_setsecurity(inode
, &fattr
, olabel
);
5112 nfs4_label_free(olabel
);
5117 #endif /* CONFIG_NFS_V4_SECURITY_LABEL */
5120 static void nfs4_init_boot_verifier(const struct nfs_client
*clp
,
5121 nfs4_verifier
*bootverf
)
5125 if (test_bit(NFS4CLNT_PURGE_STATE
, &clp
->cl_state
)) {
5126 /* An impossible timestamp guarantees this value
5127 * will never match a generated boot time. */
5129 verf
[1] = cpu_to_be32(NSEC_PER_SEC
+ 1);
5131 struct nfs_net
*nn
= net_generic(clp
->cl_net
, nfs_net_id
);
5132 verf
[0] = cpu_to_be32(nn
->boot_time
.tv_sec
);
5133 verf
[1] = cpu_to_be32(nn
->boot_time
.tv_nsec
);
5135 memcpy(bootverf
->data
, verf
, sizeof(bootverf
->data
));
5139 nfs4_init_nonuniform_client_string(struct nfs_client
*clp
)
5144 if (clp
->cl_owner_id
!= NULL
)
5148 len
= 14 + strlen(clp
->cl_ipaddr
) + 1 +
5149 strlen(rpc_peeraddr2str(clp
->cl_rpcclient
, RPC_DISPLAY_ADDR
)) +
5151 strlen(rpc_peeraddr2str(clp
->cl_rpcclient
, RPC_DISPLAY_PROTO
)) +
5155 if (len
> NFS4_OPAQUE_LIMIT
+ 1)
5159 * Since this string is allocated at mount time, and held until the
5160 * nfs_client is destroyed, we can use GFP_KERNEL here w/o worrying
5161 * about a memory-reclaim deadlock.
5163 str
= kmalloc(len
, GFP_KERNEL
);
5168 scnprintf(str
, len
, "Linux NFSv4.0 %s/%s %s",
5170 rpc_peeraddr2str(clp
->cl_rpcclient
, RPC_DISPLAY_ADDR
),
5171 rpc_peeraddr2str(clp
->cl_rpcclient
, RPC_DISPLAY_PROTO
));
5174 clp
->cl_owner_id
= str
;
5179 nfs4_init_uniquifier_client_string(struct nfs_client
*clp
)
5184 len
= 10 + 10 + 1 + 10 + 1 +
5185 strlen(nfs4_client_id_uniquifier
) + 1 +
5186 strlen(clp
->cl_rpcclient
->cl_nodename
) + 1;
5188 if (len
> NFS4_OPAQUE_LIMIT
+ 1)
5192 * Since this string is allocated at mount time, and held until the
5193 * nfs_client is destroyed, we can use GFP_KERNEL here w/o worrying
5194 * about a memory-reclaim deadlock.
5196 str
= kmalloc(len
, GFP_KERNEL
);
5200 scnprintf(str
, len
, "Linux NFSv%u.%u %s/%s",
5201 clp
->rpc_ops
->version
, clp
->cl_minorversion
,
5202 nfs4_client_id_uniquifier
,
5203 clp
->cl_rpcclient
->cl_nodename
);
5204 clp
->cl_owner_id
= str
;
5209 nfs4_init_uniform_client_string(struct nfs_client
*clp
)
5214 if (clp
->cl_owner_id
!= NULL
)
5217 if (nfs4_client_id_uniquifier
[0] != '\0')
5218 return nfs4_init_uniquifier_client_string(clp
);
5220 len
= 10 + 10 + 1 + 10 + 1 +
5221 strlen(clp
->cl_rpcclient
->cl_nodename
) + 1;
5223 if (len
> NFS4_OPAQUE_LIMIT
+ 1)
5227 * Since this string is allocated at mount time, and held until the
5228 * nfs_client is destroyed, we can use GFP_KERNEL here w/o worrying
5229 * about a memory-reclaim deadlock.
5231 str
= kmalloc(len
, GFP_KERNEL
);
5235 scnprintf(str
, len
, "Linux NFSv%u.%u %s",
5236 clp
->rpc_ops
->version
, clp
->cl_minorversion
,
5237 clp
->cl_rpcclient
->cl_nodename
);
5238 clp
->cl_owner_id
= str
;
5243 * nfs4_callback_up_net() starts only "tcp" and "tcp6" callback
5244 * services. Advertise one based on the address family of the
5248 nfs4_init_callback_netid(const struct nfs_client
*clp
, char *buf
, size_t len
)
5250 if (strchr(clp
->cl_ipaddr
, ':') != NULL
)
5251 return scnprintf(buf
, len
, "tcp6");
5253 return scnprintf(buf
, len
, "tcp");
5256 static void nfs4_setclientid_done(struct rpc_task
*task
, void *calldata
)
5258 struct nfs4_setclientid
*sc
= calldata
;
5260 if (task
->tk_status
== 0)
5261 sc
->sc_cred
= get_rpccred(task
->tk_rqstp
->rq_cred
);
5264 static const struct rpc_call_ops nfs4_setclientid_ops
= {
5265 .rpc_call_done
= nfs4_setclientid_done
,
5269 * nfs4_proc_setclientid - Negotiate client ID
5270 * @clp: state data structure
5271 * @program: RPC program for NFSv4 callback service
5272 * @port: IP port number for NFS4 callback service
5273 * @cred: RPC credential to use for this call
5274 * @res: where to place the result
5276 * Returns zero, a negative errno, or a negative NFS4ERR status code.
5278 int nfs4_proc_setclientid(struct nfs_client
*clp
, u32 program
,
5279 unsigned short port
, struct rpc_cred
*cred
,
5280 struct nfs4_setclientid_res
*res
)
5282 nfs4_verifier sc_verifier
;
5283 struct nfs4_setclientid setclientid
= {
5284 .sc_verifier
= &sc_verifier
,
5288 struct rpc_message msg
= {
5289 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETCLIENTID
],
5290 .rpc_argp
= &setclientid
,
5294 struct rpc_task
*task
;
5295 struct rpc_task_setup task_setup_data
= {
5296 .rpc_client
= clp
->cl_rpcclient
,
5297 .rpc_message
= &msg
,
5298 .callback_ops
= &nfs4_setclientid_ops
,
5299 .callback_data
= &setclientid
,
5300 .flags
= RPC_TASK_TIMEOUT
,
5304 /* nfs_client_id4 */
5305 nfs4_init_boot_verifier(clp
, &sc_verifier
);
5307 if (test_bit(NFS_CS_MIGRATION
, &clp
->cl_flags
))
5308 status
= nfs4_init_uniform_client_string(clp
);
5310 status
= nfs4_init_nonuniform_client_string(clp
);
5316 setclientid
.sc_netid_len
=
5317 nfs4_init_callback_netid(clp
,
5318 setclientid
.sc_netid
,
5319 sizeof(setclientid
.sc_netid
));
5320 setclientid
.sc_uaddr_len
= scnprintf(setclientid
.sc_uaddr
,
5321 sizeof(setclientid
.sc_uaddr
), "%s.%u.%u",
5322 clp
->cl_ipaddr
, port
>> 8, port
& 255);
5324 dprintk("NFS call setclientid auth=%s, '%s'\n",
5325 clp
->cl_rpcclient
->cl_auth
->au_ops
->au_name
,
5327 task
= rpc_run_task(&task_setup_data
);
5329 status
= PTR_ERR(task
);
5332 status
= task
->tk_status
;
5333 if (setclientid
.sc_cred
) {
5334 clp
->cl_acceptor
= rpcauth_stringify_acceptor(setclientid
.sc_cred
);
5335 put_rpccred(setclientid
.sc_cred
);
5339 trace_nfs4_setclientid(clp
, status
);
5340 dprintk("NFS reply setclientid: %d\n", status
);
5345 * nfs4_proc_setclientid_confirm - Confirm client ID
5346 * @clp: state data structure
5347 * @res: result of a previous SETCLIENTID
5348 * @cred: RPC credential to use for this call
5350 * Returns zero, a negative errno, or a negative NFS4ERR status code.
5352 int nfs4_proc_setclientid_confirm(struct nfs_client
*clp
,
5353 struct nfs4_setclientid_res
*arg
,
5354 struct rpc_cred
*cred
)
5356 struct rpc_message msg
= {
5357 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETCLIENTID_CONFIRM
],
5363 dprintk("NFS call setclientid_confirm auth=%s, (client ID %llx)\n",
5364 clp
->cl_rpcclient
->cl_auth
->au_ops
->au_name
,
5366 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
5367 trace_nfs4_setclientid_confirm(clp
, status
);
5368 dprintk("NFS reply setclientid_confirm: %d\n", status
);
5372 struct nfs4_delegreturndata
{
5373 struct nfs4_delegreturnargs args
;
5374 struct nfs4_delegreturnres res
;
5376 nfs4_stateid stateid
;
5377 unsigned long timestamp
;
5378 struct nfs_fattr fattr
;
5380 struct inode
*inode
;
5385 static void nfs4_delegreturn_done(struct rpc_task
*task
, void *calldata
)
5387 struct nfs4_delegreturndata
*data
= calldata
;
5389 if (!nfs4_sequence_done(task
, &data
->res
.seq_res
))
5392 trace_nfs4_delegreturn_exit(&data
->args
, &data
->res
, task
->tk_status
);
5393 switch (task
->tk_status
) {
5395 renew_lease(data
->res
.server
, data
->timestamp
);
5396 case -NFS4ERR_ADMIN_REVOKED
:
5397 case -NFS4ERR_DELEG_REVOKED
:
5398 case -NFS4ERR_BAD_STATEID
:
5399 case -NFS4ERR_OLD_STATEID
:
5400 case -NFS4ERR_STALE_STATEID
:
5401 case -NFS4ERR_EXPIRED
:
5402 task
->tk_status
= 0;
5404 pnfs_roc_set_barrier(data
->inode
, data
->roc_barrier
);
5407 if (nfs4_async_handle_error(task
, data
->res
.server
,
5408 NULL
, NULL
) == -EAGAIN
) {
5409 rpc_restart_call_prepare(task
);
5413 data
->rpc_status
= task
->tk_status
;
5416 static void nfs4_delegreturn_release(void *calldata
)
5418 struct nfs4_delegreturndata
*data
= calldata
;
5419 struct inode
*inode
= data
->inode
;
5423 pnfs_roc_release(inode
);
5424 nfs_iput_and_deactive(inode
);
5429 static void nfs4_delegreturn_prepare(struct rpc_task
*task
, void *data
)
5431 struct nfs4_delegreturndata
*d_data
;
5433 d_data
= (struct nfs4_delegreturndata
*)data
;
5435 if (nfs4_wait_on_layoutreturn(d_data
->inode
, task
))
5439 pnfs_roc_get_barrier(d_data
->inode
, &d_data
->roc_barrier
);
5441 nfs4_setup_sequence(d_data
->res
.server
,
5442 &d_data
->args
.seq_args
,
5443 &d_data
->res
.seq_res
,
5447 static const struct rpc_call_ops nfs4_delegreturn_ops
= {
5448 .rpc_call_prepare
= nfs4_delegreturn_prepare
,
5449 .rpc_call_done
= nfs4_delegreturn_done
,
5450 .rpc_release
= nfs4_delegreturn_release
,
5453 static int _nfs4_proc_delegreturn(struct inode
*inode
, struct rpc_cred
*cred
, const nfs4_stateid
*stateid
, int issync
)
5455 struct nfs4_delegreturndata
*data
;
5456 struct nfs_server
*server
= NFS_SERVER(inode
);
5457 struct rpc_task
*task
;
5458 struct rpc_message msg
= {
5459 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_DELEGRETURN
],
5462 struct rpc_task_setup task_setup_data
= {
5463 .rpc_client
= server
->client
,
5464 .rpc_message
= &msg
,
5465 .callback_ops
= &nfs4_delegreturn_ops
,
5466 .flags
= RPC_TASK_ASYNC
,
5470 data
= kzalloc(sizeof(*data
), GFP_NOFS
);
5473 nfs4_init_sequence(&data
->args
.seq_args
, &data
->res
.seq_res
, 1);
5475 nfs4_state_protect(server
->nfs_client
,
5476 NFS_SP4_MACH_CRED_CLEANUP
,
5477 &task_setup_data
.rpc_client
, &msg
);
5479 data
->args
.fhandle
= &data
->fh
;
5480 data
->args
.stateid
= &data
->stateid
;
5481 data
->args
.bitmask
= server
->cache_consistency_bitmask
;
5482 nfs_copy_fh(&data
->fh
, NFS_FH(inode
));
5483 nfs4_stateid_copy(&data
->stateid
, stateid
);
5484 data
->res
.fattr
= &data
->fattr
;
5485 data
->res
.server
= server
;
5486 nfs_fattr_init(data
->res
.fattr
);
5487 data
->timestamp
= jiffies
;
5488 data
->rpc_status
= 0;
5489 data
->inode
= nfs_igrab_and_active(inode
);
5491 data
->roc
= nfs4_roc(inode
);
5493 task_setup_data
.callback_data
= data
;
5494 msg
.rpc_argp
= &data
->args
;
5495 msg
.rpc_resp
= &data
->res
;
5496 task
= rpc_run_task(&task_setup_data
);
5498 return PTR_ERR(task
);
5501 status
= nfs4_wait_for_completion_rpc_task(task
);
5504 status
= data
->rpc_status
;
5506 nfs_post_op_update_inode_force_wcc(inode
, &data
->fattr
);
5508 nfs_refresh_inode(inode
, &data
->fattr
);
5514 int nfs4_proc_delegreturn(struct inode
*inode
, struct rpc_cred
*cred
, const nfs4_stateid
*stateid
, int issync
)
5516 struct nfs_server
*server
= NFS_SERVER(inode
);
5517 struct nfs4_exception exception
= { };
5520 err
= _nfs4_proc_delegreturn(inode
, cred
, stateid
, issync
);
5521 trace_nfs4_delegreturn(inode
, stateid
, err
);
5523 case -NFS4ERR_STALE_STATEID
:
5524 case -NFS4ERR_EXPIRED
:
5528 err
= nfs4_handle_exception(server
, err
, &exception
);
5529 } while (exception
.retry
);
5533 static int _nfs4_proc_getlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
5535 struct inode
*inode
= state
->inode
;
5536 struct nfs_server
*server
= NFS_SERVER(inode
);
5537 struct nfs_client
*clp
= server
->nfs_client
;
5538 struct nfs_lockt_args arg
= {
5539 .fh
= NFS_FH(inode
),
5542 struct nfs_lockt_res res
= {
5545 struct rpc_message msg
= {
5546 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOCKT
],
5549 .rpc_cred
= state
->owner
->so_cred
,
5551 struct nfs4_lock_state
*lsp
;
5554 arg
.lock_owner
.clientid
= clp
->cl_clientid
;
5555 status
= nfs4_set_lock_state(state
, request
);
5558 lsp
= request
->fl_u
.nfs4_fl
.owner
;
5559 arg
.lock_owner
.id
= lsp
->ls_seqid
.owner_id
;
5560 arg
.lock_owner
.s_dev
= server
->s_dev
;
5561 status
= nfs4_call_sync(server
->client
, server
, &msg
, &arg
.seq_args
, &res
.seq_res
, 1);
5564 request
->fl_type
= F_UNLCK
;
5566 case -NFS4ERR_DENIED
:
5569 request
->fl_ops
->fl_release_private(request
);
5570 request
->fl_ops
= NULL
;
5575 static int nfs4_proc_getlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
5577 struct nfs4_exception exception
= { };
5581 err
= _nfs4_proc_getlk(state
, cmd
, request
);
5582 trace_nfs4_get_lock(request
, state
, cmd
, err
);
5583 err
= nfs4_handle_exception(NFS_SERVER(state
->inode
), err
,
5585 } while (exception
.retry
);
5589 struct nfs4_unlockdata
{
5590 struct nfs_locku_args arg
;
5591 struct nfs_locku_res res
;
5592 struct nfs4_lock_state
*lsp
;
5593 struct nfs_open_context
*ctx
;
5594 struct file_lock fl
;
5595 struct nfs_server
*server
;
5596 unsigned long timestamp
;
5599 static struct nfs4_unlockdata
*nfs4_alloc_unlockdata(struct file_lock
*fl
,
5600 struct nfs_open_context
*ctx
,
5601 struct nfs4_lock_state
*lsp
,
5602 struct nfs_seqid
*seqid
)
5604 struct nfs4_unlockdata
*p
;
5605 struct inode
*inode
= lsp
->ls_state
->inode
;
5607 p
= kzalloc(sizeof(*p
), GFP_NOFS
);
5610 p
->arg
.fh
= NFS_FH(inode
);
5612 p
->arg
.seqid
= seqid
;
5613 p
->res
.seqid
= seqid
;
5615 atomic_inc(&lsp
->ls_count
);
5616 /* Ensure we don't close file until we're done freeing locks! */
5617 p
->ctx
= get_nfs_open_context(ctx
);
5618 memcpy(&p
->fl
, fl
, sizeof(p
->fl
));
5619 p
->server
= NFS_SERVER(inode
);
5623 static void nfs4_locku_release_calldata(void *data
)
5625 struct nfs4_unlockdata
*calldata
= data
;
5626 nfs_free_seqid(calldata
->arg
.seqid
);
5627 nfs4_put_lock_state(calldata
->lsp
);
5628 put_nfs_open_context(calldata
->ctx
);
5632 static void nfs4_locku_done(struct rpc_task
*task
, void *data
)
5634 struct nfs4_unlockdata
*calldata
= data
;
5636 if (!nfs4_sequence_done(task
, &calldata
->res
.seq_res
))
5638 switch (task
->tk_status
) {
5640 renew_lease(calldata
->server
, calldata
->timestamp
);
5641 locks_lock_inode_wait(calldata
->lsp
->ls_state
->inode
, &calldata
->fl
);
5642 if (nfs4_update_lock_stateid(calldata
->lsp
,
5643 &calldata
->res
.stateid
))
5645 case -NFS4ERR_BAD_STATEID
:
5646 case -NFS4ERR_OLD_STATEID
:
5647 case -NFS4ERR_STALE_STATEID
:
5648 case -NFS4ERR_EXPIRED
:
5649 if (!nfs4_stateid_match(&calldata
->arg
.stateid
,
5650 &calldata
->lsp
->ls_stateid
))
5651 rpc_restart_call_prepare(task
);
5654 if (nfs4_async_handle_error(task
, calldata
->server
,
5655 NULL
, NULL
) == -EAGAIN
)
5656 rpc_restart_call_prepare(task
);
5658 nfs_release_seqid(calldata
->arg
.seqid
);
5661 static void nfs4_locku_prepare(struct rpc_task
*task
, void *data
)
5663 struct nfs4_unlockdata
*calldata
= data
;
5665 if (nfs_wait_on_sequence(calldata
->arg
.seqid
, task
) != 0)
5667 nfs4_stateid_copy(&calldata
->arg
.stateid
, &calldata
->lsp
->ls_stateid
);
5668 if (test_bit(NFS_LOCK_INITIALIZED
, &calldata
->lsp
->ls_flags
) == 0) {
5669 /* Note: exit _without_ running nfs4_locku_done */
5672 calldata
->timestamp
= jiffies
;
5673 if (nfs4_setup_sequence(calldata
->server
,
5674 &calldata
->arg
.seq_args
,
5675 &calldata
->res
.seq_res
,
5677 nfs_release_seqid(calldata
->arg
.seqid
);
5680 task
->tk_action
= NULL
;
5682 nfs4_sequence_done(task
, &calldata
->res
.seq_res
);
5685 static const struct rpc_call_ops nfs4_locku_ops
= {
5686 .rpc_call_prepare
= nfs4_locku_prepare
,
5687 .rpc_call_done
= nfs4_locku_done
,
5688 .rpc_release
= nfs4_locku_release_calldata
,
5691 static struct rpc_task
*nfs4_do_unlck(struct file_lock
*fl
,
5692 struct nfs_open_context
*ctx
,
5693 struct nfs4_lock_state
*lsp
,
5694 struct nfs_seqid
*seqid
)
5696 struct nfs4_unlockdata
*data
;
5697 struct rpc_message msg
= {
5698 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOCKU
],
5699 .rpc_cred
= ctx
->cred
,
5701 struct rpc_task_setup task_setup_data
= {
5702 .rpc_client
= NFS_CLIENT(lsp
->ls_state
->inode
),
5703 .rpc_message
= &msg
,
5704 .callback_ops
= &nfs4_locku_ops
,
5705 .workqueue
= nfsiod_workqueue
,
5706 .flags
= RPC_TASK_ASYNC
,
5709 nfs4_state_protect(NFS_SERVER(lsp
->ls_state
->inode
)->nfs_client
,
5710 NFS_SP4_MACH_CRED_CLEANUP
, &task_setup_data
.rpc_client
, &msg
);
5712 /* Ensure this is an unlock - when canceling a lock, the
5713 * canceled lock is passed in, and it won't be an unlock.
5715 fl
->fl_type
= F_UNLCK
;
5717 data
= nfs4_alloc_unlockdata(fl
, ctx
, lsp
, seqid
);
5719 nfs_free_seqid(seqid
);
5720 return ERR_PTR(-ENOMEM
);
5723 nfs4_init_sequence(&data
->arg
.seq_args
, &data
->res
.seq_res
, 1);
5724 msg
.rpc_argp
= &data
->arg
;
5725 msg
.rpc_resp
= &data
->res
;
5726 task_setup_data
.callback_data
= data
;
5727 return rpc_run_task(&task_setup_data
);
5730 static int nfs4_proc_unlck(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
5732 struct inode
*inode
= state
->inode
;
5733 struct nfs4_state_owner
*sp
= state
->owner
;
5734 struct nfs_inode
*nfsi
= NFS_I(inode
);
5735 struct nfs_seqid
*seqid
;
5736 struct nfs4_lock_state
*lsp
;
5737 struct rpc_task
*task
;
5738 struct nfs_seqid
*(*alloc_seqid
)(struct nfs_seqid_counter
*, gfp_t
);
5740 unsigned char fl_flags
= request
->fl_flags
;
5742 status
= nfs4_set_lock_state(state
, request
);
5743 /* Unlock _before_ we do the RPC call */
5744 request
->fl_flags
|= FL_EXISTS
;
5745 /* Exclude nfs_delegation_claim_locks() */
5746 mutex_lock(&sp
->so_delegreturn_mutex
);
5747 /* Exclude nfs4_reclaim_open_stateid() - note nesting! */
5748 down_read(&nfsi
->rwsem
);
5749 if (locks_lock_inode_wait(inode
, request
) == -ENOENT
) {
5750 up_read(&nfsi
->rwsem
);
5751 mutex_unlock(&sp
->so_delegreturn_mutex
);
5754 up_read(&nfsi
->rwsem
);
5755 mutex_unlock(&sp
->so_delegreturn_mutex
);
5758 /* Is this a delegated lock? */
5759 lsp
= request
->fl_u
.nfs4_fl
.owner
;
5760 if (test_bit(NFS_LOCK_INITIALIZED
, &lsp
->ls_flags
) == 0)
5762 alloc_seqid
= NFS_SERVER(inode
)->nfs_client
->cl_mvops
->alloc_seqid
;
5763 seqid
= alloc_seqid(&lsp
->ls_seqid
, GFP_KERNEL
);
5767 task
= nfs4_do_unlck(request
, nfs_file_open_context(request
->fl_file
), lsp
, seqid
);
5768 status
= PTR_ERR(task
);
5771 status
= nfs4_wait_for_completion_rpc_task(task
);
5774 request
->fl_flags
= fl_flags
;
5775 trace_nfs4_unlock(request
, state
, F_SETLK
, status
);
5779 struct nfs4_lockdata
{
5780 struct nfs_lock_args arg
;
5781 struct nfs_lock_res res
;
5782 struct nfs4_lock_state
*lsp
;
5783 struct nfs_open_context
*ctx
;
5784 struct file_lock fl
;
5785 unsigned long timestamp
;
5788 struct nfs_server
*server
;
5791 static struct nfs4_lockdata
*nfs4_alloc_lockdata(struct file_lock
*fl
,
5792 struct nfs_open_context
*ctx
, struct nfs4_lock_state
*lsp
,
5795 struct nfs4_lockdata
*p
;
5796 struct inode
*inode
= lsp
->ls_state
->inode
;
5797 struct nfs_server
*server
= NFS_SERVER(inode
);
5798 struct nfs_seqid
*(*alloc_seqid
)(struct nfs_seqid_counter
*, gfp_t
);
5800 p
= kzalloc(sizeof(*p
), gfp_mask
);
5804 p
->arg
.fh
= NFS_FH(inode
);
5806 p
->arg
.open_seqid
= nfs_alloc_seqid(&lsp
->ls_state
->owner
->so_seqid
, gfp_mask
);
5807 if (IS_ERR(p
->arg
.open_seqid
))
5809 alloc_seqid
= server
->nfs_client
->cl_mvops
->alloc_seqid
;
5810 p
->arg
.lock_seqid
= alloc_seqid(&lsp
->ls_seqid
, gfp_mask
);
5811 if (IS_ERR(p
->arg
.lock_seqid
))
5812 goto out_free_seqid
;
5813 p
->arg
.lock_owner
.clientid
= server
->nfs_client
->cl_clientid
;
5814 p
->arg
.lock_owner
.id
= lsp
->ls_seqid
.owner_id
;
5815 p
->arg
.lock_owner
.s_dev
= server
->s_dev
;
5816 p
->res
.lock_seqid
= p
->arg
.lock_seqid
;
5819 atomic_inc(&lsp
->ls_count
);
5820 p
->ctx
= get_nfs_open_context(ctx
);
5821 get_file(fl
->fl_file
);
5822 memcpy(&p
->fl
, fl
, sizeof(p
->fl
));
5825 nfs_free_seqid(p
->arg
.open_seqid
);
5831 static void nfs4_lock_prepare(struct rpc_task
*task
, void *calldata
)
5833 struct nfs4_lockdata
*data
= calldata
;
5834 struct nfs4_state
*state
= data
->lsp
->ls_state
;
5836 dprintk("%s: begin!\n", __func__
);
5837 if (nfs_wait_on_sequence(data
->arg
.lock_seqid
, task
) != 0)
5839 /* Do we need to do an open_to_lock_owner? */
5840 if (!test_bit(NFS_LOCK_INITIALIZED
, &data
->lsp
->ls_flags
)) {
5841 if (nfs_wait_on_sequence(data
->arg
.open_seqid
, task
) != 0) {
5842 goto out_release_lock_seqid
;
5844 nfs4_stateid_copy(&data
->arg
.open_stateid
,
5845 &state
->open_stateid
);
5846 data
->arg
.new_lock_owner
= 1;
5847 data
->res
.open_seqid
= data
->arg
.open_seqid
;
5849 data
->arg
.new_lock_owner
= 0;
5850 nfs4_stateid_copy(&data
->arg
.lock_stateid
,
5851 &data
->lsp
->ls_stateid
);
5853 if (!nfs4_valid_open_stateid(state
)) {
5854 data
->rpc_status
= -EBADF
;
5855 task
->tk_action
= NULL
;
5856 goto out_release_open_seqid
;
5858 data
->timestamp
= jiffies
;
5859 if (nfs4_setup_sequence(data
->server
,
5860 &data
->arg
.seq_args
,
5864 out_release_open_seqid
:
5865 nfs_release_seqid(data
->arg
.open_seqid
);
5866 out_release_lock_seqid
:
5867 nfs_release_seqid(data
->arg
.lock_seqid
);
5869 nfs4_sequence_done(task
, &data
->res
.seq_res
);
5870 dprintk("%s: done!, ret = %d\n", __func__
, data
->rpc_status
);
5873 static void nfs4_lock_done(struct rpc_task
*task
, void *calldata
)
5875 struct nfs4_lockdata
*data
= calldata
;
5876 struct nfs4_lock_state
*lsp
= data
->lsp
;
5878 dprintk("%s: begin!\n", __func__
);
5880 if (!nfs4_sequence_done(task
, &data
->res
.seq_res
))
5883 data
->rpc_status
= task
->tk_status
;
5884 switch (task
->tk_status
) {
5886 renew_lease(NFS_SERVER(d_inode(data
->ctx
->dentry
)),
5888 if (data
->arg
.new_lock
) {
5889 data
->fl
.fl_flags
&= ~(FL_SLEEP
| FL_ACCESS
);
5890 if (locks_lock_inode_wait(lsp
->ls_state
->inode
, &data
->fl
) < 0) {
5891 rpc_restart_call_prepare(task
);
5895 if (data
->arg
.new_lock_owner
!= 0) {
5896 nfs_confirm_seqid(&lsp
->ls_seqid
, 0);
5897 nfs4_stateid_copy(&lsp
->ls_stateid
, &data
->res
.stateid
);
5898 set_bit(NFS_LOCK_INITIALIZED
, &lsp
->ls_flags
);
5899 } else if (!nfs4_update_lock_stateid(lsp
, &data
->res
.stateid
))
5900 rpc_restart_call_prepare(task
);
5902 case -NFS4ERR_BAD_STATEID
:
5903 case -NFS4ERR_OLD_STATEID
:
5904 case -NFS4ERR_STALE_STATEID
:
5905 case -NFS4ERR_EXPIRED
:
5906 if (data
->arg
.new_lock_owner
!= 0) {
5907 if (!nfs4_stateid_match(&data
->arg
.open_stateid
,
5908 &lsp
->ls_state
->open_stateid
))
5909 rpc_restart_call_prepare(task
);
5910 } else if (!nfs4_stateid_match(&data
->arg
.lock_stateid
,
5912 rpc_restart_call_prepare(task
);
5914 dprintk("%s: done, ret = %d!\n", __func__
, data
->rpc_status
);
5917 static void nfs4_lock_release(void *calldata
)
5919 struct nfs4_lockdata
*data
= calldata
;
5921 dprintk("%s: begin!\n", __func__
);
5922 nfs_free_seqid(data
->arg
.open_seqid
);
5923 if (data
->cancelled
!= 0) {
5924 struct rpc_task
*task
;
5925 task
= nfs4_do_unlck(&data
->fl
, data
->ctx
, data
->lsp
,
5926 data
->arg
.lock_seqid
);
5928 rpc_put_task_async(task
);
5929 dprintk("%s: cancelling lock!\n", __func__
);
5931 nfs_free_seqid(data
->arg
.lock_seqid
);
5932 nfs4_put_lock_state(data
->lsp
);
5933 put_nfs_open_context(data
->ctx
);
5934 fput(data
->fl
.fl_file
);
5936 dprintk("%s: done!\n", __func__
);
5939 static const struct rpc_call_ops nfs4_lock_ops
= {
5940 .rpc_call_prepare
= nfs4_lock_prepare
,
5941 .rpc_call_done
= nfs4_lock_done
,
5942 .rpc_release
= nfs4_lock_release
,
5945 static void nfs4_handle_setlk_error(struct nfs_server
*server
, struct nfs4_lock_state
*lsp
, int new_lock_owner
, int error
)
5948 case -NFS4ERR_ADMIN_REVOKED
:
5949 case -NFS4ERR_BAD_STATEID
:
5950 lsp
->ls_seqid
.flags
&= ~NFS_SEQID_CONFIRMED
;
5951 if (new_lock_owner
!= 0 ||
5952 test_bit(NFS_LOCK_INITIALIZED
, &lsp
->ls_flags
) != 0)
5953 nfs4_schedule_stateid_recovery(server
, lsp
->ls_state
);
5955 case -NFS4ERR_STALE_STATEID
:
5956 lsp
->ls_seqid
.flags
&= ~NFS_SEQID_CONFIRMED
;
5957 case -NFS4ERR_EXPIRED
:
5958 nfs4_schedule_lease_recovery(server
->nfs_client
);
5962 static int _nfs4_do_setlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*fl
, int recovery_type
)
5964 struct nfs4_lockdata
*data
;
5965 struct rpc_task
*task
;
5966 struct rpc_message msg
= {
5967 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOCK
],
5968 .rpc_cred
= state
->owner
->so_cred
,
5970 struct rpc_task_setup task_setup_data
= {
5971 .rpc_client
= NFS_CLIENT(state
->inode
),
5972 .rpc_message
= &msg
,
5973 .callback_ops
= &nfs4_lock_ops
,
5974 .workqueue
= nfsiod_workqueue
,
5975 .flags
= RPC_TASK_ASYNC
,
5979 dprintk("%s: begin!\n", __func__
);
5980 data
= nfs4_alloc_lockdata(fl
, nfs_file_open_context(fl
->fl_file
),
5981 fl
->fl_u
.nfs4_fl
.owner
,
5982 recovery_type
== NFS_LOCK_NEW
? GFP_KERNEL
: GFP_NOFS
);
5986 data
->arg
.block
= 1;
5987 nfs4_init_sequence(&data
->arg
.seq_args
, &data
->res
.seq_res
, 1);
5988 msg
.rpc_argp
= &data
->arg
;
5989 msg
.rpc_resp
= &data
->res
;
5990 task_setup_data
.callback_data
= data
;
5991 if (recovery_type
> NFS_LOCK_NEW
) {
5992 if (recovery_type
== NFS_LOCK_RECLAIM
)
5993 data
->arg
.reclaim
= NFS_LOCK_RECLAIM
;
5994 nfs4_set_sequence_privileged(&data
->arg
.seq_args
);
5996 data
->arg
.new_lock
= 1;
5997 task
= rpc_run_task(&task_setup_data
);
5999 return PTR_ERR(task
);
6000 ret
= nfs4_wait_for_completion_rpc_task(task
);
6002 ret
= data
->rpc_status
;
6004 nfs4_handle_setlk_error(data
->server
, data
->lsp
,
6005 data
->arg
.new_lock_owner
, ret
);
6007 data
->cancelled
= 1;
6009 dprintk("%s: done, ret = %d!\n", __func__
, ret
);
6010 trace_nfs4_set_lock(fl
, state
, &data
->res
.stateid
, cmd
, ret
);
6014 static int nfs4_lock_reclaim(struct nfs4_state
*state
, struct file_lock
*request
)
6016 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
6017 struct nfs4_exception exception
= {
6018 .inode
= state
->inode
,
6023 /* Cache the lock if possible... */
6024 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) != 0)
6026 err
= _nfs4_do_setlk(state
, F_SETLK
, request
, NFS_LOCK_RECLAIM
);
6027 if (err
!= -NFS4ERR_DELAY
)
6029 nfs4_handle_exception(server
, err
, &exception
);
6030 } while (exception
.retry
);
6034 static int nfs4_lock_expired(struct nfs4_state
*state
, struct file_lock
*request
)
6036 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
6037 struct nfs4_exception exception
= {
6038 .inode
= state
->inode
,
6042 err
= nfs4_set_lock_state(state
, request
);
6045 if (!recover_lost_locks
) {
6046 set_bit(NFS_LOCK_LOST
, &request
->fl_u
.nfs4_fl
.owner
->ls_flags
);
6050 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) != 0)
6052 err
= _nfs4_do_setlk(state
, F_SETLK
, request
, NFS_LOCK_EXPIRED
);
6056 case -NFS4ERR_GRACE
:
6057 case -NFS4ERR_DELAY
:
6058 nfs4_handle_exception(server
, err
, &exception
);
6061 } while (exception
.retry
);
6066 #if defined(CONFIG_NFS_V4_1)
6068 * nfs41_check_expired_locks - possibly free a lock stateid
6070 * @state: NFSv4 state for an inode
6072 * Returns NFS_OK if recovery for this stateid is now finished.
6073 * Otherwise a negative NFS4ERR value is returned.
6075 static int nfs41_check_expired_locks(struct nfs4_state
*state
)
6077 int status
, ret
= -NFS4ERR_BAD_STATEID
;
6078 struct nfs4_lock_state
*lsp
;
6079 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
6081 list_for_each_entry(lsp
, &state
->lock_states
, ls_locks
) {
6082 if (test_bit(NFS_LOCK_INITIALIZED
, &lsp
->ls_flags
)) {
6083 struct rpc_cred
*cred
= lsp
->ls_state
->owner
->so_cred
;
6085 status
= nfs41_test_stateid(server
,
6088 trace_nfs4_test_lock_stateid(state
, lsp
, status
);
6089 if (status
!= NFS_OK
) {
6090 /* Free the stateid unless the server
6091 * informs us the stateid is unrecognized. */
6092 if (status
!= -NFS4ERR_BAD_STATEID
)
6093 nfs41_free_stateid(server
,
6096 clear_bit(NFS_LOCK_INITIALIZED
, &lsp
->ls_flags
);
6105 static int nfs41_lock_expired(struct nfs4_state
*state
, struct file_lock
*request
)
6107 int status
= NFS_OK
;
6109 if (test_bit(LK_STATE_IN_USE
, &state
->flags
))
6110 status
= nfs41_check_expired_locks(state
);
6111 if (status
!= NFS_OK
)
6112 status
= nfs4_lock_expired(state
, request
);
6117 static int _nfs4_proc_setlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
6119 struct nfs_inode
*nfsi
= NFS_I(state
->inode
);
6120 struct nfs4_state_owner
*sp
= state
->owner
;
6121 unsigned char fl_flags
= request
->fl_flags
;
6124 request
->fl_flags
|= FL_ACCESS
;
6125 status
= locks_lock_inode_wait(state
->inode
, request
);
6128 mutex_lock(&sp
->so_delegreturn_mutex
);
6129 down_read(&nfsi
->rwsem
);
6130 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
)) {
6131 /* Yes: cache locks! */
6132 /* ...but avoid races with delegation recall... */
6133 request
->fl_flags
= fl_flags
& ~FL_SLEEP
;
6134 status
= locks_lock_inode_wait(state
->inode
, request
);
6135 up_read(&nfsi
->rwsem
);
6136 mutex_unlock(&sp
->so_delegreturn_mutex
);
6139 up_read(&nfsi
->rwsem
);
6140 mutex_unlock(&sp
->so_delegreturn_mutex
);
6141 status
= _nfs4_do_setlk(state
, cmd
, request
, NFS_LOCK_NEW
);
6143 request
->fl_flags
= fl_flags
;
6147 static int nfs4_proc_setlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
6149 struct nfs4_exception exception
= {
6151 .inode
= state
->inode
,
6156 err
= _nfs4_proc_setlk(state
, cmd
, request
);
6157 if (err
== -NFS4ERR_DENIED
)
6159 err
= nfs4_handle_exception(NFS_SERVER(state
->inode
),
6161 } while (exception
.retry
);
6165 #define NFS4_LOCK_MINTIMEOUT (1 * HZ)
6166 #define NFS4_LOCK_MAXTIMEOUT (30 * HZ)
6169 nfs4_retry_setlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
6171 int status
= -ERESTARTSYS
;
6172 unsigned long timeout
= NFS4_LOCK_MINTIMEOUT
;
6174 while(!signalled()) {
6175 status
= nfs4_proc_setlk(state
, cmd
, request
);
6176 if ((status
!= -EAGAIN
) || IS_SETLK(cmd
))
6178 freezable_schedule_timeout_interruptible(timeout
);
6180 timeout
= min_t(unsigned long, NFS4_LOCK_MAXTIMEOUT
, timeout
);
6181 status
= -ERESTARTSYS
;
6187 nfs4_proc_lock(struct file
*filp
, int cmd
, struct file_lock
*request
)
6189 struct nfs_open_context
*ctx
;
6190 struct nfs4_state
*state
;
6193 /* verify open state */
6194 ctx
= nfs_file_open_context(filp
);
6197 if (request
->fl_start
< 0 || request
->fl_end
< 0)
6200 if (IS_GETLK(cmd
)) {
6202 return nfs4_proc_getlk(state
, F_GETLK
, request
);
6206 if (!(IS_SETLK(cmd
) || IS_SETLKW(cmd
)))
6209 if (request
->fl_type
== F_UNLCK
) {
6211 return nfs4_proc_unlck(state
, cmd
, request
);
6218 if ((request
->fl_flags
& FL_POSIX
) &&
6219 !test_bit(NFS_STATE_POSIX_LOCKS
, &state
->flags
))
6223 * Don't rely on the VFS having checked the file open mode,
6224 * since it won't do this for flock() locks.
6226 switch (request
->fl_type
) {
6228 if (!(filp
->f_mode
& FMODE_READ
))
6232 if (!(filp
->f_mode
& FMODE_WRITE
))
6236 status
= nfs4_set_lock_state(state
, request
);
6240 return nfs4_retry_setlk(state
, cmd
, request
);
6243 int nfs4_lock_delegation_recall(struct file_lock
*fl
, struct nfs4_state
*state
, const nfs4_stateid
*stateid
)
6245 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
6248 err
= nfs4_set_lock_state(state
, fl
);
6251 err
= _nfs4_do_setlk(state
, F_SETLK
, fl
, NFS_LOCK_NEW
);
6252 return nfs4_handle_delegation_recall_error(server
, state
, stateid
, err
);
6255 struct nfs_release_lockowner_data
{
6256 struct nfs4_lock_state
*lsp
;
6257 struct nfs_server
*server
;
6258 struct nfs_release_lockowner_args args
;
6259 struct nfs_release_lockowner_res res
;
6260 unsigned long timestamp
;
6263 static void nfs4_release_lockowner_prepare(struct rpc_task
*task
, void *calldata
)
6265 struct nfs_release_lockowner_data
*data
= calldata
;
6266 struct nfs_server
*server
= data
->server
;
6267 nfs40_setup_sequence(server
->nfs_client
->cl_slot_tbl
,
6268 &data
->args
.seq_args
, &data
->res
.seq_res
, task
);
6269 data
->args
.lock_owner
.clientid
= server
->nfs_client
->cl_clientid
;
6270 data
->timestamp
= jiffies
;
6273 static void nfs4_release_lockowner_done(struct rpc_task
*task
, void *calldata
)
6275 struct nfs_release_lockowner_data
*data
= calldata
;
6276 struct nfs_server
*server
= data
->server
;
6278 nfs40_sequence_done(task
, &data
->res
.seq_res
);
6280 switch (task
->tk_status
) {
6282 renew_lease(server
, data
->timestamp
);
6284 case -NFS4ERR_STALE_CLIENTID
:
6285 case -NFS4ERR_EXPIRED
:
6286 nfs4_schedule_lease_recovery(server
->nfs_client
);
6288 case -NFS4ERR_LEASE_MOVED
:
6289 case -NFS4ERR_DELAY
:
6290 if (nfs4_async_handle_error(task
, server
,
6291 NULL
, NULL
) == -EAGAIN
)
6292 rpc_restart_call_prepare(task
);
6296 static void nfs4_release_lockowner_release(void *calldata
)
6298 struct nfs_release_lockowner_data
*data
= calldata
;
6299 nfs4_free_lock_state(data
->server
, data
->lsp
);
6303 static const struct rpc_call_ops nfs4_release_lockowner_ops
= {
6304 .rpc_call_prepare
= nfs4_release_lockowner_prepare
,
6305 .rpc_call_done
= nfs4_release_lockowner_done
,
6306 .rpc_release
= nfs4_release_lockowner_release
,
6310 nfs4_release_lockowner(struct nfs_server
*server
, struct nfs4_lock_state
*lsp
)
6312 struct nfs_release_lockowner_data
*data
;
6313 struct rpc_message msg
= {
6314 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RELEASE_LOCKOWNER
],
6317 if (server
->nfs_client
->cl_mvops
->minor_version
!= 0)
6320 data
= kmalloc(sizeof(*data
), GFP_NOFS
);
6324 data
->server
= server
;
6325 data
->args
.lock_owner
.clientid
= server
->nfs_client
->cl_clientid
;
6326 data
->args
.lock_owner
.id
= lsp
->ls_seqid
.owner_id
;
6327 data
->args
.lock_owner
.s_dev
= server
->s_dev
;
6329 msg
.rpc_argp
= &data
->args
;
6330 msg
.rpc_resp
= &data
->res
;
6331 nfs4_init_sequence(&data
->args
.seq_args
, &data
->res
.seq_res
, 0);
6332 rpc_call_async(server
->client
, &msg
, 0, &nfs4_release_lockowner_ops
, data
);
6335 #define XATTR_NAME_NFSV4_ACL "system.nfs4_acl"
6337 static int nfs4_xattr_set_nfs4_acl(const struct xattr_handler
*handler
,
6338 struct dentry
*unused
, struct inode
*inode
,
6339 const char *key
, const void *buf
,
6340 size_t buflen
, int flags
)
6342 return nfs4_proc_set_acl(inode
, buf
, buflen
);
6345 static int nfs4_xattr_get_nfs4_acl(const struct xattr_handler
*handler
,
6346 struct dentry
*unused
, struct inode
*inode
,
6347 const char *key
, void *buf
, size_t buflen
)
6349 return nfs4_proc_get_acl(inode
, buf
, buflen
);
6352 static bool nfs4_xattr_list_nfs4_acl(struct dentry
*dentry
)
6354 return nfs4_server_supports_acls(NFS_SERVER(d_inode(dentry
)));
6357 #ifdef CONFIG_NFS_V4_SECURITY_LABEL
6359 static int nfs4_xattr_set_nfs4_label(const struct xattr_handler
*handler
,
6360 struct dentry
*unused
, struct inode
*inode
,
6361 const char *key
, const void *buf
,
6362 size_t buflen
, int flags
)
6364 if (security_ismaclabel(key
))
6365 return nfs4_set_security_label(inode
, buf
, buflen
);
6370 static int nfs4_xattr_get_nfs4_label(const struct xattr_handler
*handler
,
6371 struct dentry
*unused
, struct inode
*inode
,
6372 const char *key
, void *buf
, size_t buflen
)
6374 if (security_ismaclabel(key
))
6375 return nfs4_get_security_label(inode
, buf
, buflen
);
6380 nfs4_listxattr_nfs4_label(struct inode
*inode
, char *list
, size_t list_len
)
6384 if (nfs_server_capable(inode
, NFS_CAP_SECURITY_LABEL
)) {
6385 len
= security_inode_listsecurity(inode
, list
, list_len
);
6386 if (list_len
&& len
> list_len
)
6392 static const struct xattr_handler nfs4_xattr_nfs4_label_handler
= {
6393 .prefix
= XATTR_SECURITY_PREFIX
,
6394 .get
= nfs4_xattr_get_nfs4_label
,
6395 .set
= nfs4_xattr_set_nfs4_label
,
6401 nfs4_listxattr_nfs4_label(struct inode
*inode
, char *list
, size_t list_len
)
6409 * nfs_fhget will use either the mounted_on_fileid or the fileid
6411 static void nfs_fixup_referral_attributes(struct nfs_fattr
*fattr
)
6413 if (!(((fattr
->valid
& NFS_ATTR_FATTR_MOUNTED_ON_FILEID
) ||
6414 (fattr
->valid
& NFS_ATTR_FATTR_FILEID
)) &&
6415 (fattr
->valid
& NFS_ATTR_FATTR_FSID
) &&
6416 (fattr
->valid
& NFS_ATTR_FATTR_V4_LOCATIONS
)))
6419 fattr
->valid
|= NFS_ATTR_FATTR_TYPE
| NFS_ATTR_FATTR_MODE
|
6420 NFS_ATTR_FATTR_NLINK
| NFS_ATTR_FATTR_V4_REFERRAL
;
6421 fattr
->mode
= S_IFDIR
| S_IRUGO
| S_IXUGO
;
6425 static int _nfs4_proc_fs_locations(struct rpc_clnt
*client
, struct inode
*dir
,
6426 const struct qstr
*name
,
6427 struct nfs4_fs_locations
*fs_locations
,
6430 struct nfs_server
*server
= NFS_SERVER(dir
);
6432 [0] = FATTR4_WORD0_FSID
| FATTR4_WORD0_FS_LOCATIONS
,
6434 struct nfs4_fs_locations_arg args
= {
6435 .dir_fh
= NFS_FH(dir
),
6440 struct nfs4_fs_locations_res res
= {
6441 .fs_locations
= fs_locations
,
6443 struct rpc_message msg
= {
6444 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_FS_LOCATIONS
],
6450 dprintk("%s: start\n", __func__
);
6452 /* Ask for the fileid of the absent filesystem if mounted_on_fileid
6453 * is not supported */
6454 if (NFS_SERVER(dir
)->attr_bitmask
[1] & FATTR4_WORD1_MOUNTED_ON_FILEID
)
6455 bitmask
[1] |= FATTR4_WORD1_MOUNTED_ON_FILEID
;
6457 bitmask
[0] |= FATTR4_WORD0_FILEID
;
6459 nfs_fattr_init(&fs_locations
->fattr
);
6460 fs_locations
->server
= server
;
6461 fs_locations
->nlocations
= 0;
6462 status
= nfs4_call_sync(client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
6463 dprintk("%s: returned status = %d\n", __func__
, status
);
6467 int nfs4_proc_fs_locations(struct rpc_clnt
*client
, struct inode
*dir
,
6468 const struct qstr
*name
,
6469 struct nfs4_fs_locations
*fs_locations
,
6472 struct nfs4_exception exception
= { };
6475 err
= _nfs4_proc_fs_locations(client
, dir
, name
,
6476 fs_locations
, page
);
6477 trace_nfs4_get_fs_locations(dir
, name
, err
);
6478 err
= nfs4_handle_exception(NFS_SERVER(dir
), err
,
6480 } while (exception
.retry
);
6485 * This operation also signals the server that this client is
6486 * performing migration recovery. The server can stop returning
6487 * NFS4ERR_LEASE_MOVED to this client. A RENEW operation is
6488 * appended to this compound to identify the client ID which is
6489 * performing recovery.
6491 static int _nfs40_proc_get_locations(struct inode
*inode
,
6492 struct nfs4_fs_locations
*locations
,
6493 struct page
*page
, struct rpc_cred
*cred
)
6495 struct nfs_server
*server
= NFS_SERVER(inode
);
6496 struct rpc_clnt
*clnt
= server
->client
;
6498 [0] = FATTR4_WORD0_FSID
| FATTR4_WORD0_FS_LOCATIONS
,
6500 struct nfs4_fs_locations_arg args
= {
6501 .clientid
= server
->nfs_client
->cl_clientid
,
6502 .fh
= NFS_FH(inode
),
6505 .migration
= 1, /* skip LOOKUP */
6506 .renew
= 1, /* append RENEW */
6508 struct nfs4_fs_locations_res res
= {
6509 .fs_locations
= locations
,
6513 struct rpc_message msg
= {
6514 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_FS_LOCATIONS
],
6519 unsigned long now
= jiffies
;
6522 nfs_fattr_init(&locations
->fattr
);
6523 locations
->server
= server
;
6524 locations
->nlocations
= 0;
6526 nfs4_init_sequence(&args
.seq_args
, &res
.seq_res
, 0);
6527 nfs4_set_sequence_privileged(&args
.seq_args
);
6528 status
= nfs4_call_sync_sequence(clnt
, server
, &msg
,
6529 &args
.seq_args
, &res
.seq_res
);
6533 renew_lease(server
, now
);
6537 #ifdef CONFIG_NFS_V4_1
6540 * This operation also signals the server that this client is
6541 * performing migration recovery. The server can stop asserting
6542 * SEQ4_STATUS_LEASE_MOVED for this client. The client ID
6543 * performing this operation is identified in the SEQUENCE
6544 * operation in this compound.
6546 * When the client supports GETATTR(fs_locations_info), it can
6547 * be plumbed in here.
6549 static int _nfs41_proc_get_locations(struct inode
*inode
,
6550 struct nfs4_fs_locations
*locations
,
6551 struct page
*page
, struct rpc_cred
*cred
)
6553 struct nfs_server
*server
= NFS_SERVER(inode
);
6554 struct rpc_clnt
*clnt
= server
->client
;
6556 [0] = FATTR4_WORD0_FSID
| FATTR4_WORD0_FS_LOCATIONS
,
6558 struct nfs4_fs_locations_arg args
= {
6559 .fh
= NFS_FH(inode
),
6562 .migration
= 1, /* skip LOOKUP */
6564 struct nfs4_fs_locations_res res
= {
6565 .fs_locations
= locations
,
6568 struct rpc_message msg
= {
6569 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_FS_LOCATIONS
],
6576 nfs_fattr_init(&locations
->fattr
);
6577 locations
->server
= server
;
6578 locations
->nlocations
= 0;
6580 nfs4_init_sequence(&args
.seq_args
, &res
.seq_res
, 0);
6581 nfs4_set_sequence_privileged(&args
.seq_args
);
6582 status
= nfs4_call_sync_sequence(clnt
, server
, &msg
,
6583 &args
.seq_args
, &res
.seq_res
);
6584 if (status
== NFS4_OK
&&
6585 res
.seq_res
.sr_status_flags
& SEQ4_STATUS_LEASE_MOVED
)
6586 status
= -NFS4ERR_LEASE_MOVED
;
6590 #endif /* CONFIG_NFS_V4_1 */
6593 * nfs4_proc_get_locations - discover locations for a migrated FSID
6594 * @inode: inode on FSID that is migrating
6595 * @locations: result of query
6597 * @cred: credential to use for this operation
6599 * Returns NFS4_OK on success, a negative NFS4ERR status code if the
6600 * operation failed, or a negative errno if a local error occurred.
6602 * On success, "locations" is filled in, but if the server has
6603 * no locations information, NFS_ATTR_FATTR_V4_LOCATIONS is not
6606 * -NFS4ERR_LEASE_MOVED is returned if the server still has leases
6607 * from this client that require migration recovery.
6609 int nfs4_proc_get_locations(struct inode
*inode
,
6610 struct nfs4_fs_locations
*locations
,
6611 struct page
*page
, struct rpc_cred
*cred
)
6613 struct nfs_server
*server
= NFS_SERVER(inode
);
6614 struct nfs_client
*clp
= server
->nfs_client
;
6615 const struct nfs4_mig_recovery_ops
*ops
=
6616 clp
->cl_mvops
->mig_recovery_ops
;
6617 struct nfs4_exception exception
= { };
6620 dprintk("%s: FSID %llx:%llx on \"%s\"\n", __func__
,
6621 (unsigned long long)server
->fsid
.major
,
6622 (unsigned long long)server
->fsid
.minor
,
6624 nfs_display_fhandle(NFS_FH(inode
), __func__
);
6627 status
= ops
->get_locations(inode
, locations
, page
, cred
);
6628 if (status
!= -NFS4ERR_DELAY
)
6630 nfs4_handle_exception(server
, status
, &exception
);
6631 } while (exception
.retry
);
6636 * This operation also signals the server that this client is
6637 * performing "lease moved" recovery. The server can stop
6638 * returning NFS4ERR_LEASE_MOVED to this client. A RENEW operation
6639 * is appended to this compound to identify the client ID which is
6640 * performing recovery.
6642 static int _nfs40_proc_fsid_present(struct inode
*inode
, struct rpc_cred
*cred
)
6644 struct nfs_server
*server
= NFS_SERVER(inode
);
6645 struct nfs_client
*clp
= NFS_SERVER(inode
)->nfs_client
;
6646 struct rpc_clnt
*clnt
= server
->client
;
6647 struct nfs4_fsid_present_arg args
= {
6648 .fh
= NFS_FH(inode
),
6649 .clientid
= clp
->cl_clientid
,
6650 .renew
= 1, /* append RENEW */
6652 struct nfs4_fsid_present_res res
= {
6655 struct rpc_message msg
= {
6656 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_FSID_PRESENT
],
6661 unsigned long now
= jiffies
;
6664 res
.fh
= nfs_alloc_fhandle();
6668 nfs4_init_sequence(&args
.seq_args
, &res
.seq_res
, 0);
6669 nfs4_set_sequence_privileged(&args
.seq_args
);
6670 status
= nfs4_call_sync_sequence(clnt
, server
, &msg
,
6671 &args
.seq_args
, &res
.seq_res
);
6672 nfs_free_fhandle(res
.fh
);
6676 do_renew_lease(clp
, now
);
6680 #ifdef CONFIG_NFS_V4_1
6683 * This operation also signals the server that this client is
6684 * performing "lease moved" recovery. The server can stop asserting
6685 * SEQ4_STATUS_LEASE_MOVED for this client. The client ID performing
6686 * this operation is identified in the SEQUENCE operation in this
6689 static int _nfs41_proc_fsid_present(struct inode
*inode
, struct rpc_cred
*cred
)
6691 struct nfs_server
*server
= NFS_SERVER(inode
);
6692 struct rpc_clnt
*clnt
= server
->client
;
6693 struct nfs4_fsid_present_arg args
= {
6694 .fh
= NFS_FH(inode
),
6696 struct nfs4_fsid_present_res res
= {
6698 struct rpc_message msg
= {
6699 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_FSID_PRESENT
],
6706 res
.fh
= nfs_alloc_fhandle();
6710 nfs4_init_sequence(&args
.seq_args
, &res
.seq_res
, 0);
6711 nfs4_set_sequence_privileged(&args
.seq_args
);
6712 status
= nfs4_call_sync_sequence(clnt
, server
, &msg
,
6713 &args
.seq_args
, &res
.seq_res
);
6714 nfs_free_fhandle(res
.fh
);
6715 if (status
== NFS4_OK
&&
6716 res
.seq_res
.sr_status_flags
& SEQ4_STATUS_LEASE_MOVED
)
6717 status
= -NFS4ERR_LEASE_MOVED
;
6721 #endif /* CONFIG_NFS_V4_1 */
6724 * nfs4_proc_fsid_present - Is this FSID present or absent on server?
6725 * @inode: inode on FSID to check
6726 * @cred: credential to use for this operation
6728 * Server indicates whether the FSID is present, moved, or not
6729 * recognized. This operation is necessary to clear a LEASE_MOVED
6730 * condition for this client ID.
6732 * Returns NFS4_OK if the FSID is present on this server,
6733 * -NFS4ERR_MOVED if the FSID is no longer present, a negative
6734 * NFS4ERR code if some error occurred on the server, or a
6735 * negative errno if a local failure occurred.
6737 int nfs4_proc_fsid_present(struct inode
*inode
, struct rpc_cred
*cred
)
6739 struct nfs_server
*server
= NFS_SERVER(inode
);
6740 struct nfs_client
*clp
= server
->nfs_client
;
6741 const struct nfs4_mig_recovery_ops
*ops
=
6742 clp
->cl_mvops
->mig_recovery_ops
;
6743 struct nfs4_exception exception
= { };
6746 dprintk("%s: FSID %llx:%llx on \"%s\"\n", __func__
,
6747 (unsigned long long)server
->fsid
.major
,
6748 (unsigned long long)server
->fsid
.minor
,
6750 nfs_display_fhandle(NFS_FH(inode
), __func__
);
6753 status
= ops
->fsid_present(inode
, cred
);
6754 if (status
!= -NFS4ERR_DELAY
)
6756 nfs4_handle_exception(server
, status
, &exception
);
6757 } while (exception
.retry
);
6762 * If 'use_integrity' is true and the state managment nfs_client
6763 * cl_rpcclient is using krb5i/p, use the integrity protected cl_rpcclient
6764 * and the machine credential as per RFC3530bis and RFC5661 Security
6765 * Considerations sections. Otherwise, just use the user cred with the
6766 * filesystem's rpc_client.
6768 static int _nfs4_proc_secinfo(struct inode
*dir
, const struct qstr
*name
, struct nfs4_secinfo_flavors
*flavors
, bool use_integrity
)
6771 struct nfs4_secinfo_arg args
= {
6772 .dir_fh
= NFS_FH(dir
),
6775 struct nfs4_secinfo_res res
= {
6778 struct rpc_message msg
= {
6779 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SECINFO
],
6783 struct rpc_clnt
*clnt
= NFS_SERVER(dir
)->client
;
6784 struct rpc_cred
*cred
= NULL
;
6786 if (use_integrity
) {
6787 clnt
= NFS_SERVER(dir
)->nfs_client
->cl_rpcclient
;
6788 cred
= nfs4_get_clid_cred(NFS_SERVER(dir
)->nfs_client
);
6789 msg
.rpc_cred
= cred
;
6792 dprintk("NFS call secinfo %s\n", name
->name
);
6794 nfs4_state_protect(NFS_SERVER(dir
)->nfs_client
,
6795 NFS_SP4_MACH_CRED_SECINFO
, &clnt
, &msg
);
6797 status
= nfs4_call_sync(clnt
, NFS_SERVER(dir
), &msg
, &args
.seq_args
,
6799 dprintk("NFS reply secinfo: %d\n", status
);
6807 int nfs4_proc_secinfo(struct inode
*dir
, const struct qstr
*name
,
6808 struct nfs4_secinfo_flavors
*flavors
)
6810 struct nfs4_exception exception
= { };
6813 err
= -NFS4ERR_WRONGSEC
;
6815 /* try to use integrity protection with machine cred */
6816 if (_nfs4_is_integrity_protected(NFS_SERVER(dir
)->nfs_client
))
6817 err
= _nfs4_proc_secinfo(dir
, name
, flavors
, true);
6820 * if unable to use integrity protection, or SECINFO with
6821 * integrity protection returns NFS4ERR_WRONGSEC (which is
6822 * disallowed by spec, but exists in deployed servers) use
6823 * the current filesystem's rpc_client and the user cred.
6825 if (err
== -NFS4ERR_WRONGSEC
)
6826 err
= _nfs4_proc_secinfo(dir
, name
, flavors
, false);
6828 trace_nfs4_secinfo(dir
, name
, err
);
6829 err
= nfs4_handle_exception(NFS_SERVER(dir
), err
,
6831 } while (exception
.retry
);
6835 #ifdef CONFIG_NFS_V4_1
6837 * Check the exchange flags returned by the server for invalid flags, having
6838 * both PNFS and NON_PNFS flags set, and not having one of NON_PNFS, PNFS, or
6841 static int nfs4_check_cl_exchange_flags(u32 flags
)
6843 if (flags
& ~EXCHGID4_FLAG_MASK_R
)
6845 if ((flags
& EXCHGID4_FLAG_USE_PNFS_MDS
) &&
6846 (flags
& EXCHGID4_FLAG_USE_NON_PNFS
))
6848 if (!(flags
& (EXCHGID4_FLAG_MASK_PNFS
)))
6852 return -NFS4ERR_INVAL
;
6856 nfs41_same_server_scope(struct nfs41_server_scope
*a
,
6857 struct nfs41_server_scope
*b
)
6859 if (a
->server_scope_sz
== b
->server_scope_sz
&&
6860 memcmp(a
->server_scope
, b
->server_scope
, a
->server_scope_sz
) == 0)
6867 nfs4_bind_one_conn_to_session_done(struct rpc_task
*task
, void *calldata
)
6871 static const struct rpc_call_ops nfs4_bind_one_conn_to_session_ops
= {
6872 .rpc_call_done
= &nfs4_bind_one_conn_to_session_done
,
6876 * nfs4_proc_bind_one_conn_to_session()
6878 * The 4.1 client currently uses the same TCP connection for the
6879 * fore and backchannel.
6882 int nfs4_proc_bind_one_conn_to_session(struct rpc_clnt
*clnt
,
6883 struct rpc_xprt
*xprt
,
6884 struct nfs_client
*clp
,
6885 struct rpc_cred
*cred
)
6888 struct nfs41_bind_conn_to_session_args args
= {
6890 .dir
= NFS4_CDFC4_FORE_OR_BOTH
,
6892 struct nfs41_bind_conn_to_session_res res
;
6893 struct rpc_message msg
= {
6895 &nfs4_procedures
[NFSPROC4_CLNT_BIND_CONN_TO_SESSION
],
6900 struct rpc_task_setup task_setup_data
= {
6903 .callback_ops
= &nfs4_bind_one_conn_to_session_ops
,
6904 .rpc_message
= &msg
,
6905 .flags
= RPC_TASK_TIMEOUT
,
6907 struct rpc_task
*task
;
6909 dprintk("--> %s\n", __func__
);
6911 nfs4_copy_sessionid(&args
.sessionid
, &clp
->cl_session
->sess_id
);
6912 if (!(clp
->cl_session
->flags
& SESSION4_BACK_CHAN
))
6913 args
.dir
= NFS4_CDFC4_FORE
;
6915 /* Do not set the backchannel flag unless this is clnt->cl_xprt */
6916 if (xprt
!= rcu_access_pointer(clnt
->cl_xprt
))
6917 args
.dir
= NFS4_CDFC4_FORE
;
6919 task
= rpc_run_task(&task_setup_data
);
6920 if (!IS_ERR(task
)) {
6921 status
= task
->tk_status
;
6924 status
= PTR_ERR(task
);
6925 trace_nfs4_bind_conn_to_session(clp
, status
);
6927 if (memcmp(res
.sessionid
.data
,
6928 clp
->cl_session
->sess_id
.data
, NFS4_MAX_SESSIONID_LEN
)) {
6929 dprintk("NFS: %s: Session ID mismatch\n", __func__
);
6933 if ((res
.dir
& args
.dir
) != res
.dir
|| res
.dir
== 0) {
6934 dprintk("NFS: %s: Unexpected direction from server\n",
6939 if (res
.use_conn_in_rdma_mode
!= args
.use_conn_in_rdma_mode
) {
6940 dprintk("NFS: %s: Server returned RDMA mode = true\n",
6947 dprintk("<-- %s status= %d\n", __func__
, status
);
6951 struct rpc_bind_conn_calldata
{
6952 struct nfs_client
*clp
;
6953 struct rpc_cred
*cred
;
6957 nfs4_proc_bind_conn_to_session_callback(struct rpc_clnt
*clnt
,
6958 struct rpc_xprt
*xprt
,
6961 struct rpc_bind_conn_calldata
*p
= calldata
;
6963 return nfs4_proc_bind_one_conn_to_session(clnt
, xprt
, p
->clp
, p
->cred
);
6966 int nfs4_proc_bind_conn_to_session(struct nfs_client
*clp
, struct rpc_cred
*cred
)
6968 struct rpc_bind_conn_calldata data
= {
6972 return rpc_clnt_iterate_for_each_xprt(clp
->cl_rpcclient
,
6973 nfs4_proc_bind_conn_to_session_callback
, &data
);
6977 * Minimum set of SP4_MACH_CRED operations from RFC 5661 in the enforce map
6978 * and operations we'd like to see to enable certain features in the allow map
6980 static const struct nfs41_state_protection nfs4_sp4_mach_cred_request
= {
6981 .how
= SP4_MACH_CRED
,
6982 .enforce
.u
.words
= {
6983 [1] = 1 << (OP_BIND_CONN_TO_SESSION
- 32) |
6984 1 << (OP_EXCHANGE_ID
- 32) |
6985 1 << (OP_CREATE_SESSION
- 32) |
6986 1 << (OP_DESTROY_SESSION
- 32) |
6987 1 << (OP_DESTROY_CLIENTID
- 32)
6990 [0] = 1 << (OP_CLOSE
) |
6991 1 << (OP_OPEN_DOWNGRADE
) |
6993 1 << (OP_DELEGRETURN
) |
6995 [1] = 1 << (OP_SECINFO
- 32) |
6996 1 << (OP_SECINFO_NO_NAME
- 32) |
6997 1 << (OP_LAYOUTRETURN
- 32) |
6998 1 << (OP_TEST_STATEID
- 32) |
6999 1 << (OP_FREE_STATEID
- 32) |
7000 1 << (OP_WRITE
- 32)
7005 * Select the state protection mode for client `clp' given the server results
7006 * from exchange_id in `sp'.
7008 * Returns 0 on success, negative errno otherwise.
7010 static int nfs4_sp4_select_mode(struct nfs_client
*clp
,
7011 struct nfs41_state_protection
*sp
)
7013 static const u32 supported_enforce
[NFS4_OP_MAP_NUM_WORDS
] = {
7014 [1] = 1 << (OP_BIND_CONN_TO_SESSION
- 32) |
7015 1 << (OP_EXCHANGE_ID
- 32) |
7016 1 << (OP_CREATE_SESSION
- 32) |
7017 1 << (OP_DESTROY_SESSION
- 32) |
7018 1 << (OP_DESTROY_CLIENTID
- 32)
7022 if (sp
->how
== SP4_MACH_CRED
) {
7023 /* Print state protect result */
7024 dfprintk(MOUNT
, "Server SP4_MACH_CRED support:\n");
7025 for (i
= 0; i
<= LAST_NFS4_OP
; i
++) {
7026 if (test_bit(i
, sp
->enforce
.u
.longs
))
7027 dfprintk(MOUNT
, " enforce op %d\n", i
);
7028 if (test_bit(i
, sp
->allow
.u
.longs
))
7029 dfprintk(MOUNT
, " allow op %d\n", i
);
7032 /* make sure nothing is on enforce list that isn't supported */
7033 for (i
= 0; i
< NFS4_OP_MAP_NUM_WORDS
; i
++) {
7034 if (sp
->enforce
.u
.words
[i
] & ~supported_enforce
[i
]) {
7035 dfprintk(MOUNT
, "sp4_mach_cred: disabled\n");
7041 * Minimal mode - state operations are allowed to use machine
7042 * credential. Note this already happens by default, so the
7043 * client doesn't have to do anything more than the negotiation.
7045 * NOTE: we don't care if EXCHANGE_ID is in the list -
7046 * we're already using the machine cred for exchange_id
7047 * and will never use a different cred.
7049 if (test_bit(OP_BIND_CONN_TO_SESSION
, sp
->enforce
.u
.longs
) &&
7050 test_bit(OP_CREATE_SESSION
, sp
->enforce
.u
.longs
) &&
7051 test_bit(OP_DESTROY_SESSION
, sp
->enforce
.u
.longs
) &&
7052 test_bit(OP_DESTROY_CLIENTID
, sp
->enforce
.u
.longs
)) {
7053 dfprintk(MOUNT
, "sp4_mach_cred:\n");
7054 dfprintk(MOUNT
, " minimal mode enabled\n");
7055 set_bit(NFS_SP4_MACH_CRED_MINIMAL
, &clp
->cl_sp4_flags
);
7057 dfprintk(MOUNT
, "sp4_mach_cred: disabled\n");
7061 if (test_bit(OP_CLOSE
, sp
->allow
.u
.longs
) &&
7062 test_bit(OP_OPEN_DOWNGRADE
, sp
->allow
.u
.longs
) &&
7063 test_bit(OP_DELEGRETURN
, sp
->allow
.u
.longs
) &&
7064 test_bit(OP_LOCKU
, sp
->allow
.u
.longs
)) {
7065 dfprintk(MOUNT
, " cleanup mode enabled\n");
7066 set_bit(NFS_SP4_MACH_CRED_CLEANUP
, &clp
->cl_sp4_flags
);
7069 if (test_bit(OP_LAYOUTRETURN
, sp
->allow
.u
.longs
)) {
7070 dfprintk(MOUNT
, " pnfs cleanup mode enabled\n");
7071 set_bit(NFS_SP4_MACH_CRED_PNFS_CLEANUP
,
7072 &clp
->cl_sp4_flags
);
7075 if (test_bit(OP_SECINFO
, sp
->allow
.u
.longs
) &&
7076 test_bit(OP_SECINFO_NO_NAME
, sp
->allow
.u
.longs
)) {
7077 dfprintk(MOUNT
, " secinfo mode enabled\n");
7078 set_bit(NFS_SP4_MACH_CRED_SECINFO
, &clp
->cl_sp4_flags
);
7081 if (test_bit(OP_TEST_STATEID
, sp
->allow
.u
.longs
) &&
7082 test_bit(OP_FREE_STATEID
, sp
->allow
.u
.longs
)) {
7083 dfprintk(MOUNT
, " stateid mode enabled\n");
7084 set_bit(NFS_SP4_MACH_CRED_STATEID
, &clp
->cl_sp4_flags
);
7087 if (test_bit(OP_WRITE
, sp
->allow
.u
.longs
)) {
7088 dfprintk(MOUNT
, " write mode enabled\n");
7089 set_bit(NFS_SP4_MACH_CRED_WRITE
, &clp
->cl_sp4_flags
);
7092 if (test_bit(OP_COMMIT
, sp
->allow
.u
.longs
)) {
7093 dfprintk(MOUNT
, " commit mode enabled\n");
7094 set_bit(NFS_SP4_MACH_CRED_COMMIT
, &clp
->cl_sp4_flags
);
7101 struct nfs41_exchange_id_data
{
7102 struct nfs41_exchange_id_res res
;
7103 struct nfs41_exchange_id_args args
;
7104 struct rpc_xprt
*xprt
;
7108 static void nfs4_exchange_id_done(struct rpc_task
*task
, void *data
)
7110 struct nfs41_exchange_id_data
*cdata
=
7111 (struct nfs41_exchange_id_data
*)data
;
7112 struct nfs_client
*clp
= cdata
->args
.client
;
7113 int status
= task
->tk_status
;
7115 trace_nfs4_exchange_id(clp
, status
);
7118 status
= nfs4_check_cl_exchange_flags(cdata
->res
.flags
);
7120 if (cdata
->xprt
&& status
== 0) {
7121 status
= nfs4_detect_session_trunking(clp
, &cdata
->res
,
7127 status
= nfs4_sp4_select_mode(clp
, &cdata
->res
.state_protect
);
7130 clp
->cl_clientid
= cdata
->res
.clientid
;
7131 clp
->cl_exchange_flags
= cdata
->res
.flags
;
7132 /* Client ID is not confirmed */
7133 if (!(cdata
->res
.flags
& EXCHGID4_FLAG_CONFIRMED_R
)) {
7134 clear_bit(NFS4_SESSION_ESTABLISHED
,
7135 &clp
->cl_session
->session_state
);
7136 clp
->cl_seqid
= cdata
->res
.seqid
;
7139 kfree(clp
->cl_serverowner
);
7140 clp
->cl_serverowner
= cdata
->res
.server_owner
;
7141 cdata
->res
.server_owner
= NULL
;
7143 /* use the most recent implementation id */
7144 kfree(clp
->cl_implid
);
7145 clp
->cl_implid
= cdata
->res
.impl_id
;
7146 cdata
->res
.impl_id
= NULL
;
7148 if (clp
->cl_serverscope
!= NULL
&&
7149 !nfs41_same_server_scope(clp
->cl_serverscope
,
7150 cdata
->res
.server_scope
)) {
7151 dprintk("%s: server_scope mismatch detected\n",
7153 set_bit(NFS4CLNT_SERVER_SCOPE_MISMATCH
, &clp
->cl_state
);
7154 kfree(clp
->cl_serverscope
);
7155 clp
->cl_serverscope
= NULL
;
7158 if (clp
->cl_serverscope
== NULL
) {
7159 clp
->cl_serverscope
= cdata
->res
.server_scope
;
7160 cdata
->res
.server_scope
= NULL
;
7162 /* Save the EXCHANGE_ID verifier session trunk tests */
7163 memcpy(clp
->cl_confirm
.data
, cdata
->args
.verifier
->data
,
7164 sizeof(clp
->cl_confirm
.data
));
7167 cdata
->rpc_status
= status
;
7171 static void nfs4_exchange_id_release(void *data
)
7173 struct nfs41_exchange_id_data
*cdata
=
7174 (struct nfs41_exchange_id_data
*)data
;
7176 nfs_put_client(cdata
->args
.client
);
7178 xprt_put(cdata
->xprt
);
7179 rpc_clnt_xprt_switch_put(cdata
->args
.client
->cl_rpcclient
);
7181 kfree(cdata
->res
.impl_id
);
7182 kfree(cdata
->res
.server_scope
);
7183 kfree(cdata
->res
.server_owner
);
7187 static const struct rpc_call_ops nfs4_exchange_id_call_ops
= {
7188 .rpc_call_done
= nfs4_exchange_id_done
,
7189 .rpc_release
= nfs4_exchange_id_release
,
7193 * _nfs4_proc_exchange_id()
7195 * Wrapper for EXCHANGE_ID operation.
7197 static int _nfs4_proc_exchange_id(struct nfs_client
*clp
, struct rpc_cred
*cred
,
7198 u32 sp4_how
, struct rpc_xprt
*xprt
)
7200 nfs4_verifier verifier
;
7201 struct rpc_message msg
= {
7202 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_EXCHANGE_ID
],
7205 struct rpc_task_setup task_setup_data
= {
7206 .rpc_client
= clp
->cl_rpcclient
,
7207 .callback_ops
= &nfs4_exchange_id_call_ops
,
7208 .rpc_message
= &msg
,
7209 .flags
= RPC_TASK_ASYNC
| RPC_TASK_TIMEOUT
,
7211 struct nfs41_exchange_id_data
*calldata
;
7212 struct rpc_task
*task
;
7215 if (!atomic_inc_not_zero(&clp
->cl_count
))
7219 calldata
= kzalloc(sizeof(*calldata
), GFP_NOFS
);
7224 nfs4_init_boot_verifier(clp
, &verifier
);
7226 status
= nfs4_init_uniform_client_string(clp
);
7230 dprintk("NFS call exchange_id auth=%s, '%s'\n",
7231 clp
->cl_rpcclient
->cl_auth
->au_ops
->au_name
,
7234 calldata
->res
.server_owner
= kzalloc(sizeof(struct nfs41_server_owner
),
7237 if (unlikely(calldata
->res
.server_owner
== NULL
))
7240 calldata
->res
.server_scope
= kzalloc(sizeof(struct nfs41_server_scope
),
7242 if (unlikely(calldata
->res
.server_scope
== NULL
))
7243 goto out_server_owner
;
7245 calldata
->res
.impl_id
= kzalloc(sizeof(struct nfs41_impl_id
), GFP_NOFS
);
7246 if (unlikely(calldata
->res
.impl_id
== NULL
))
7247 goto out_server_scope
;
7251 calldata
->args
.state_protect
.how
= SP4_NONE
;
7255 calldata
->args
.state_protect
= nfs4_sp4_mach_cred_request
;
7265 calldata
->xprt
= xprt
;
7266 task_setup_data
.rpc_xprt
= xprt
;
7267 task_setup_data
.flags
=
7268 RPC_TASK_SOFT
|RPC_TASK_SOFTCONN
|RPC_TASK_ASYNC
;
7269 calldata
->args
.verifier
= &clp
->cl_confirm
;
7271 calldata
->args
.verifier
= &verifier
;
7273 calldata
->args
.client
= clp
;
7274 #ifdef CONFIG_NFS_V4_1_MIGRATION
7275 calldata
->args
.flags
= EXCHGID4_FLAG_SUPP_MOVED_REFER
|
7276 EXCHGID4_FLAG_BIND_PRINC_STATEID
|
7277 EXCHGID4_FLAG_SUPP_MOVED_MIGR
,
7279 calldata
->args
.flags
= EXCHGID4_FLAG_SUPP_MOVED_REFER
|
7280 EXCHGID4_FLAG_BIND_PRINC_STATEID
,
7282 msg
.rpc_argp
= &calldata
->args
;
7283 msg
.rpc_resp
= &calldata
->res
;
7284 task_setup_data
.callback_data
= calldata
;
7286 task
= rpc_run_task(&task_setup_data
);
7288 status
= PTR_ERR(task
);
7293 status
= rpc_wait_for_completion_task(task
);
7295 status
= calldata
->rpc_status
;
7296 } else /* session trunking test */
7297 status
= calldata
->rpc_status
;
7301 if (clp
->cl_implid
!= NULL
)
7302 dprintk("NFS reply exchange_id: Server Implementation ID: "
7303 "domain: %s, name: %s, date: %llu,%u\n",
7304 clp
->cl_implid
->domain
, clp
->cl_implid
->name
,
7305 clp
->cl_implid
->date
.seconds
,
7306 clp
->cl_implid
->date
.nseconds
);
7307 dprintk("NFS reply exchange_id: %d\n", status
);
7311 kfree(calldata
->res
.impl_id
);
7313 kfree(calldata
->res
.server_scope
);
7315 kfree(calldata
->res
.server_owner
);
7322 * nfs4_proc_exchange_id()
7324 * Returns zero, a negative errno, or a negative NFS4ERR status code.
7326 * Since the clientid has expired, all compounds using sessions
7327 * associated with the stale clientid will be returning
7328 * NFS4ERR_BADSESSION in the sequence operation, and will therefore
7329 * be in some phase of session reset.
7331 * Will attempt to negotiate SP4_MACH_CRED if krb5i / krb5p auth is used.
7333 int nfs4_proc_exchange_id(struct nfs_client
*clp
, struct rpc_cred
*cred
)
7335 rpc_authflavor_t authflavor
= clp
->cl_rpcclient
->cl_auth
->au_flavor
;
7338 /* try SP4_MACH_CRED if krb5i/p */
7339 if (authflavor
== RPC_AUTH_GSS_KRB5I
||
7340 authflavor
== RPC_AUTH_GSS_KRB5P
) {
7341 status
= _nfs4_proc_exchange_id(clp
, cred
, SP4_MACH_CRED
, NULL
);
7347 return _nfs4_proc_exchange_id(clp
, cred
, SP4_NONE
, NULL
);
7351 * nfs4_test_session_trunk
7353 * This is an add_xprt_test() test function called from
7354 * rpc_clnt_setup_test_and_add_xprt.
7356 * The rpc_xprt_switch is referrenced by rpc_clnt_setup_test_and_add_xprt
7357 * and is dereferrenced in nfs4_exchange_id_release
7359 * Upon success, add the new transport to the rpc_clnt
7361 * @clnt: struct rpc_clnt to get new transport
7362 * @xprt: the rpc_xprt to test
7363 * @data: call data for _nfs4_proc_exchange_id.
7365 int nfs4_test_session_trunk(struct rpc_clnt
*clnt
, struct rpc_xprt
*xprt
,
7368 struct nfs4_add_xprt_data
*adata
= (struct nfs4_add_xprt_data
*)data
;
7371 dprintk("--> %s try %s\n", __func__
,
7372 xprt
->address_strings
[RPC_DISPLAY_ADDR
]);
7374 sp4_how
= (adata
->clp
->cl_sp4_flags
== 0 ? SP4_NONE
: SP4_MACH_CRED
);
7376 /* Test connection for session trunking. Async exchange_id call */
7377 return _nfs4_proc_exchange_id(adata
->clp
, adata
->cred
, sp4_how
, xprt
);
7379 EXPORT_SYMBOL_GPL(nfs4_test_session_trunk
);
7381 static int _nfs4_proc_destroy_clientid(struct nfs_client
*clp
,
7382 struct rpc_cred
*cred
)
7384 struct rpc_message msg
= {
7385 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_DESTROY_CLIENTID
],
7391 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
7392 trace_nfs4_destroy_clientid(clp
, status
);
7394 dprintk("NFS: Got error %d from the server %s on "
7395 "DESTROY_CLIENTID.", status
, clp
->cl_hostname
);
7399 static int nfs4_proc_destroy_clientid(struct nfs_client
*clp
,
7400 struct rpc_cred
*cred
)
7405 for (loop
= NFS4_MAX_LOOP_ON_RECOVER
; loop
!= 0; loop
--) {
7406 ret
= _nfs4_proc_destroy_clientid(clp
, cred
);
7408 case -NFS4ERR_DELAY
:
7409 case -NFS4ERR_CLIENTID_BUSY
:
7419 int nfs4_destroy_clientid(struct nfs_client
*clp
)
7421 struct rpc_cred
*cred
;
7424 if (clp
->cl_mvops
->minor_version
< 1)
7426 if (clp
->cl_exchange_flags
== 0)
7428 if (clp
->cl_preserve_clid
)
7430 cred
= nfs4_get_clid_cred(clp
);
7431 ret
= nfs4_proc_destroy_clientid(clp
, cred
);
7436 case -NFS4ERR_STALE_CLIENTID
:
7437 clp
->cl_exchange_flags
= 0;
7443 struct nfs4_get_lease_time_data
{
7444 struct nfs4_get_lease_time_args
*args
;
7445 struct nfs4_get_lease_time_res
*res
;
7446 struct nfs_client
*clp
;
7449 static void nfs4_get_lease_time_prepare(struct rpc_task
*task
,
7452 struct nfs4_get_lease_time_data
*data
=
7453 (struct nfs4_get_lease_time_data
*)calldata
;
7455 dprintk("--> %s\n", __func__
);
7456 /* just setup sequence, do not trigger session recovery
7457 since we're invoked within one */
7458 nfs41_setup_sequence(data
->clp
->cl_session
,
7459 &data
->args
->la_seq_args
,
7460 &data
->res
->lr_seq_res
,
7462 dprintk("<-- %s\n", __func__
);
7466 * Called from nfs4_state_manager thread for session setup, so don't recover
7467 * from sequence operation or clientid errors.
7469 static void nfs4_get_lease_time_done(struct rpc_task
*task
, void *calldata
)
7471 struct nfs4_get_lease_time_data
*data
=
7472 (struct nfs4_get_lease_time_data
*)calldata
;
7474 dprintk("--> %s\n", __func__
);
7475 if (!nfs41_sequence_done(task
, &data
->res
->lr_seq_res
))
7477 switch (task
->tk_status
) {
7478 case -NFS4ERR_DELAY
:
7479 case -NFS4ERR_GRACE
:
7480 dprintk("%s Retry: tk_status %d\n", __func__
, task
->tk_status
);
7481 rpc_delay(task
, NFS4_POLL_RETRY_MIN
);
7482 task
->tk_status
= 0;
7484 case -NFS4ERR_RETRY_UNCACHED_REP
:
7485 rpc_restart_call_prepare(task
);
7488 dprintk("<-- %s\n", __func__
);
7491 static const struct rpc_call_ops nfs4_get_lease_time_ops
= {
7492 .rpc_call_prepare
= nfs4_get_lease_time_prepare
,
7493 .rpc_call_done
= nfs4_get_lease_time_done
,
7496 int nfs4_proc_get_lease_time(struct nfs_client
*clp
, struct nfs_fsinfo
*fsinfo
)
7498 struct rpc_task
*task
;
7499 struct nfs4_get_lease_time_args args
;
7500 struct nfs4_get_lease_time_res res
= {
7501 .lr_fsinfo
= fsinfo
,
7503 struct nfs4_get_lease_time_data data
= {
7508 struct rpc_message msg
= {
7509 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GET_LEASE_TIME
],
7513 struct rpc_task_setup task_setup
= {
7514 .rpc_client
= clp
->cl_rpcclient
,
7515 .rpc_message
= &msg
,
7516 .callback_ops
= &nfs4_get_lease_time_ops
,
7517 .callback_data
= &data
,
7518 .flags
= RPC_TASK_TIMEOUT
,
7522 nfs4_init_sequence(&args
.la_seq_args
, &res
.lr_seq_res
, 0);
7523 nfs4_set_sequence_privileged(&args
.la_seq_args
);
7524 dprintk("--> %s\n", __func__
);
7525 task
= rpc_run_task(&task_setup
);
7528 status
= PTR_ERR(task
);
7530 status
= task
->tk_status
;
7533 dprintk("<-- %s return %d\n", __func__
, status
);
7539 * Initialize the values to be used by the client in CREATE_SESSION
7540 * If nfs4_init_session set the fore channel request and response sizes,
7543 * Set the back channel max_resp_sz_cached to zero to force the client to
7544 * always set csa_cachethis to FALSE because the current implementation
7545 * of the back channel DRC only supports caching the CB_SEQUENCE operation.
7547 static void nfs4_init_channel_attrs(struct nfs41_create_session_args
*args
,
7548 struct rpc_clnt
*clnt
)
7550 unsigned int max_rqst_sz
, max_resp_sz
;
7551 unsigned int max_bc_payload
= rpc_max_bc_payload(clnt
);
7553 max_rqst_sz
= NFS_MAX_FILE_IO_SIZE
+ nfs41_maxwrite_overhead
;
7554 max_resp_sz
= NFS_MAX_FILE_IO_SIZE
+ nfs41_maxread_overhead
;
7556 /* Fore channel attributes */
7557 args
->fc_attrs
.max_rqst_sz
= max_rqst_sz
;
7558 args
->fc_attrs
.max_resp_sz
= max_resp_sz
;
7559 args
->fc_attrs
.max_ops
= NFS4_MAX_OPS
;
7560 args
->fc_attrs
.max_reqs
= max_session_slots
;
7562 dprintk("%s: Fore Channel : max_rqst_sz=%u max_resp_sz=%u "
7563 "max_ops=%u max_reqs=%u\n",
7565 args
->fc_attrs
.max_rqst_sz
, args
->fc_attrs
.max_resp_sz
,
7566 args
->fc_attrs
.max_ops
, args
->fc_attrs
.max_reqs
);
7568 /* Back channel attributes */
7569 args
->bc_attrs
.max_rqst_sz
= max_bc_payload
;
7570 args
->bc_attrs
.max_resp_sz
= max_bc_payload
;
7571 args
->bc_attrs
.max_resp_sz_cached
= 0;
7572 args
->bc_attrs
.max_ops
= NFS4_MAX_BACK_CHANNEL_OPS
;
7573 args
->bc_attrs
.max_reqs
= min_t(unsigned short, max_session_cb_slots
, 1);
7575 dprintk("%s: Back Channel : max_rqst_sz=%u max_resp_sz=%u "
7576 "max_resp_sz_cached=%u max_ops=%u max_reqs=%u\n",
7578 args
->bc_attrs
.max_rqst_sz
, args
->bc_attrs
.max_resp_sz
,
7579 args
->bc_attrs
.max_resp_sz_cached
, args
->bc_attrs
.max_ops
,
7580 args
->bc_attrs
.max_reqs
);
7583 static int nfs4_verify_fore_channel_attrs(struct nfs41_create_session_args
*args
,
7584 struct nfs41_create_session_res
*res
)
7586 struct nfs4_channel_attrs
*sent
= &args
->fc_attrs
;
7587 struct nfs4_channel_attrs
*rcvd
= &res
->fc_attrs
;
7589 if (rcvd
->max_resp_sz
> sent
->max_resp_sz
)
7592 * Our requested max_ops is the minimum we need; we're not
7593 * prepared to break up compounds into smaller pieces than that.
7594 * So, no point even trying to continue if the server won't
7597 if (rcvd
->max_ops
< sent
->max_ops
)
7599 if (rcvd
->max_reqs
== 0)
7601 if (rcvd
->max_reqs
> NFS4_MAX_SLOT_TABLE
)
7602 rcvd
->max_reqs
= NFS4_MAX_SLOT_TABLE
;
7606 static int nfs4_verify_back_channel_attrs(struct nfs41_create_session_args
*args
,
7607 struct nfs41_create_session_res
*res
)
7609 struct nfs4_channel_attrs
*sent
= &args
->bc_attrs
;
7610 struct nfs4_channel_attrs
*rcvd
= &res
->bc_attrs
;
7612 if (!(res
->flags
& SESSION4_BACK_CHAN
))
7614 if (rcvd
->max_rqst_sz
> sent
->max_rqst_sz
)
7616 if (rcvd
->max_resp_sz
< sent
->max_resp_sz
)
7618 if (rcvd
->max_resp_sz_cached
> sent
->max_resp_sz_cached
)
7620 if (rcvd
->max_ops
> sent
->max_ops
)
7622 if (rcvd
->max_reqs
> sent
->max_reqs
)
7628 static int nfs4_verify_channel_attrs(struct nfs41_create_session_args
*args
,
7629 struct nfs41_create_session_res
*res
)
7633 ret
= nfs4_verify_fore_channel_attrs(args
, res
);
7636 return nfs4_verify_back_channel_attrs(args
, res
);
7639 static void nfs4_update_session(struct nfs4_session
*session
,
7640 struct nfs41_create_session_res
*res
)
7642 nfs4_copy_sessionid(&session
->sess_id
, &res
->sessionid
);
7643 /* Mark client id and session as being confirmed */
7644 session
->clp
->cl_exchange_flags
|= EXCHGID4_FLAG_CONFIRMED_R
;
7645 set_bit(NFS4_SESSION_ESTABLISHED
, &session
->session_state
);
7646 session
->flags
= res
->flags
;
7647 memcpy(&session
->fc_attrs
, &res
->fc_attrs
, sizeof(session
->fc_attrs
));
7648 if (res
->flags
& SESSION4_BACK_CHAN
)
7649 memcpy(&session
->bc_attrs
, &res
->bc_attrs
,
7650 sizeof(session
->bc_attrs
));
7653 static int _nfs4_proc_create_session(struct nfs_client
*clp
,
7654 struct rpc_cred
*cred
)
7656 struct nfs4_session
*session
= clp
->cl_session
;
7657 struct nfs41_create_session_args args
= {
7659 .clientid
= clp
->cl_clientid
,
7660 .seqid
= clp
->cl_seqid
,
7661 .cb_program
= NFS4_CALLBACK
,
7663 struct nfs41_create_session_res res
;
7665 struct rpc_message msg
= {
7666 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_CREATE_SESSION
],
7673 nfs4_init_channel_attrs(&args
, clp
->cl_rpcclient
);
7674 args
.flags
= (SESSION4_PERSIST
| SESSION4_BACK_CHAN
);
7676 status
= rpc_call_sync(session
->clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
7677 trace_nfs4_create_session(clp
, status
);
7680 case -NFS4ERR_STALE_CLIENTID
:
7681 case -NFS4ERR_DELAY
:
7690 /* Verify the session's negotiated channel_attrs values */
7691 status
= nfs4_verify_channel_attrs(&args
, &res
);
7692 /* Increment the clientid slot sequence id */
7695 nfs4_update_session(session
, &res
);
7702 * Issues a CREATE_SESSION operation to the server.
7703 * It is the responsibility of the caller to verify the session is
7704 * expired before calling this routine.
7706 int nfs4_proc_create_session(struct nfs_client
*clp
, struct rpc_cred
*cred
)
7710 struct nfs4_session
*session
= clp
->cl_session
;
7712 dprintk("--> %s clp=%p session=%p\n", __func__
, clp
, session
);
7714 status
= _nfs4_proc_create_session(clp
, cred
);
7718 /* Init or reset the session slot tables */
7719 status
= nfs4_setup_session_slot_tables(session
);
7720 dprintk("slot table setup returned %d\n", status
);
7724 ptr
= (unsigned *)&session
->sess_id
.data
[0];
7725 dprintk("%s client>seqid %d sessionid %u:%u:%u:%u\n", __func__
,
7726 clp
->cl_seqid
, ptr
[0], ptr
[1], ptr
[2], ptr
[3]);
7728 dprintk("<-- %s\n", __func__
);
7733 * Issue the over-the-wire RPC DESTROY_SESSION.
7734 * The caller must serialize access to this routine.
7736 int nfs4_proc_destroy_session(struct nfs4_session
*session
,
7737 struct rpc_cred
*cred
)
7739 struct rpc_message msg
= {
7740 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_DESTROY_SESSION
],
7741 .rpc_argp
= session
,
7746 dprintk("--> nfs4_proc_destroy_session\n");
7748 /* session is still being setup */
7749 if (!test_and_clear_bit(NFS4_SESSION_ESTABLISHED
, &session
->session_state
))
7752 status
= rpc_call_sync(session
->clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
7753 trace_nfs4_destroy_session(session
->clp
, status
);
7756 dprintk("NFS: Got error %d from the server on DESTROY_SESSION. "
7757 "Session has been destroyed regardless...\n", status
);
7759 dprintk("<-- nfs4_proc_destroy_session\n");
7764 * Renew the cl_session lease.
7766 struct nfs4_sequence_data
{
7767 struct nfs_client
*clp
;
7768 struct nfs4_sequence_args args
;
7769 struct nfs4_sequence_res res
;
7772 static void nfs41_sequence_release(void *data
)
7774 struct nfs4_sequence_data
*calldata
= data
;
7775 struct nfs_client
*clp
= calldata
->clp
;
7777 if (atomic_read(&clp
->cl_count
) > 1)
7778 nfs4_schedule_state_renewal(clp
);
7779 nfs_put_client(clp
);
7783 static int nfs41_sequence_handle_errors(struct rpc_task
*task
, struct nfs_client
*clp
)
7785 switch(task
->tk_status
) {
7786 case -NFS4ERR_DELAY
:
7787 rpc_delay(task
, NFS4_POLL_RETRY_MAX
);
7790 nfs4_schedule_lease_recovery(clp
);
7795 static void nfs41_sequence_call_done(struct rpc_task
*task
, void *data
)
7797 struct nfs4_sequence_data
*calldata
= data
;
7798 struct nfs_client
*clp
= calldata
->clp
;
7800 if (!nfs41_sequence_done(task
, task
->tk_msg
.rpc_resp
))
7803 trace_nfs4_sequence(clp
, task
->tk_status
);
7804 if (task
->tk_status
< 0) {
7805 dprintk("%s ERROR %d\n", __func__
, task
->tk_status
);
7806 if (atomic_read(&clp
->cl_count
) == 1)
7809 if (nfs41_sequence_handle_errors(task
, clp
) == -EAGAIN
) {
7810 rpc_restart_call_prepare(task
);
7814 dprintk("%s rpc_cred %p\n", __func__
, task
->tk_msg
.rpc_cred
);
7816 dprintk("<-- %s\n", __func__
);
7819 static void nfs41_sequence_prepare(struct rpc_task
*task
, void *data
)
7821 struct nfs4_sequence_data
*calldata
= data
;
7822 struct nfs_client
*clp
= calldata
->clp
;
7823 struct nfs4_sequence_args
*args
;
7824 struct nfs4_sequence_res
*res
;
7826 args
= task
->tk_msg
.rpc_argp
;
7827 res
= task
->tk_msg
.rpc_resp
;
7829 nfs41_setup_sequence(clp
->cl_session
, args
, res
, task
);
7832 static const struct rpc_call_ops nfs41_sequence_ops
= {
7833 .rpc_call_done
= nfs41_sequence_call_done
,
7834 .rpc_call_prepare
= nfs41_sequence_prepare
,
7835 .rpc_release
= nfs41_sequence_release
,
7838 static struct rpc_task
*_nfs41_proc_sequence(struct nfs_client
*clp
,
7839 struct rpc_cred
*cred
,
7842 struct nfs4_sequence_data
*calldata
;
7843 struct rpc_message msg
= {
7844 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SEQUENCE
],
7847 struct rpc_task_setup task_setup_data
= {
7848 .rpc_client
= clp
->cl_rpcclient
,
7849 .rpc_message
= &msg
,
7850 .callback_ops
= &nfs41_sequence_ops
,
7851 .flags
= RPC_TASK_ASYNC
| RPC_TASK_TIMEOUT
,
7854 if (!atomic_inc_not_zero(&clp
->cl_count
))
7855 return ERR_PTR(-EIO
);
7856 calldata
= kzalloc(sizeof(*calldata
), GFP_NOFS
);
7857 if (calldata
== NULL
) {
7858 nfs_put_client(clp
);
7859 return ERR_PTR(-ENOMEM
);
7861 nfs4_init_sequence(&calldata
->args
, &calldata
->res
, 0);
7863 nfs4_set_sequence_privileged(&calldata
->args
);
7864 msg
.rpc_argp
= &calldata
->args
;
7865 msg
.rpc_resp
= &calldata
->res
;
7866 calldata
->clp
= clp
;
7867 task_setup_data
.callback_data
= calldata
;
7869 return rpc_run_task(&task_setup_data
);
7872 static int nfs41_proc_async_sequence(struct nfs_client
*clp
, struct rpc_cred
*cred
, unsigned renew_flags
)
7874 struct rpc_task
*task
;
7877 if ((renew_flags
& NFS4_RENEW_TIMEOUT
) == 0)
7879 task
= _nfs41_proc_sequence(clp
, cred
, false);
7881 ret
= PTR_ERR(task
);
7883 rpc_put_task_async(task
);
7884 dprintk("<-- %s status=%d\n", __func__
, ret
);
7888 static int nfs4_proc_sequence(struct nfs_client
*clp
, struct rpc_cred
*cred
)
7890 struct rpc_task
*task
;
7893 task
= _nfs41_proc_sequence(clp
, cred
, true);
7895 ret
= PTR_ERR(task
);
7898 ret
= rpc_wait_for_completion_task(task
);
7900 ret
= task
->tk_status
;
7903 dprintk("<-- %s status=%d\n", __func__
, ret
);
7907 struct nfs4_reclaim_complete_data
{
7908 struct nfs_client
*clp
;
7909 struct nfs41_reclaim_complete_args arg
;
7910 struct nfs41_reclaim_complete_res res
;
7913 static void nfs4_reclaim_complete_prepare(struct rpc_task
*task
, void *data
)
7915 struct nfs4_reclaim_complete_data
*calldata
= data
;
7917 nfs41_setup_sequence(calldata
->clp
->cl_session
,
7918 &calldata
->arg
.seq_args
,
7919 &calldata
->res
.seq_res
,
7923 static int nfs41_reclaim_complete_handle_errors(struct rpc_task
*task
, struct nfs_client
*clp
)
7925 switch(task
->tk_status
) {
7927 case -NFS4ERR_COMPLETE_ALREADY
:
7928 case -NFS4ERR_WRONG_CRED
: /* What to do here? */
7930 case -NFS4ERR_DELAY
:
7931 rpc_delay(task
, NFS4_POLL_RETRY_MAX
);
7933 case -NFS4ERR_RETRY_UNCACHED_REP
:
7936 nfs4_schedule_lease_recovery(clp
);
7941 static void nfs4_reclaim_complete_done(struct rpc_task
*task
, void *data
)
7943 struct nfs4_reclaim_complete_data
*calldata
= data
;
7944 struct nfs_client
*clp
= calldata
->clp
;
7945 struct nfs4_sequence_res
*res
= &calldata
->res
.seq_res
;
7947 dprintk("--> %s\n", __func__
);
7948 if (!nfs41_sequence_done(task
, res
))
7951 trace_nfs4_reclaim_complete(clp
, task
->tk_status
);
7952 if (nfs41_reclaim_complete_handle_errors(task
, clp
) == -EAGAIN
) {
7953 rpc_restart_call_prepare(task
);
7956 dprintk("<-- %s\n", __func__
);
7959 static void nfs4_free_reclaim_complete_data(void *data
)
7961 struct nfs4_reclaim_complete_data
*calldata
= data
;
7966 static const struct rpc_call_ops nfs4_reclaim_complete_call_ops
= {
7967 .rpc_call_prepare
= nfs4_reclaim_complete_prepare
,
7968 .rpc_call_done
= nfs4_reclaim_complete_done
,
7969 .rpc_release
= nfs4_free_reclaim_complete_data
,
7973 * Issue a global reclaim complete.
7975 static int nfs41_proc_reclaim_complete(struct nfs_client
*clp
,
7976 struct rpc_cred
*cred
)
7978 struct nfs4_reclaim_complete_data
*calldata
;
7979 struct rpc_task
*task
;
7980 struct rpc_message msg
= {
7981 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RECLAIM_COMPLETE
],
7984 struct rpc_task_setup task_setup_data
= {
7985 .rpc_client
= clp
->cl_rpcclient
,
7986 .rpc_message
= &msg
,
7987 .callback_ops
= &nfs4_reclaim_complete_call_ops
,
7988 .flags
= RPC_TASK_ASYNC
,
7990 int status
= -ENOMEM
;
7992 dprintk("--> %s\n", __func__
);
7993 calldata
= kzalloc(sizeof(*calldata
), GFP_NOFS
);
7994 if (calldata
== NULL
)
7996 calldata
->clp
= clp
;
7997 calldata
->arg
.one_fs
= 0;
7999 nfs4_init_sequence(&calldata
->arg
.seq_args
, &calldata
->res
.seq_res
, 0);
8000 nfs4_set_sequence_privileged(&calldata
->arg
.seq_args
);
8001 msg
.rpc_argp
= &calldata
->arg
;
8002 msg
.rpc_resp
= &calldata
->res
;
8003 task_setup_data
.callback_data
= calldata
;
8004 task
= rpc_run_task(&task_setup_data
);
8006 status
= PTR_ERR(task
);
8009 status
= nfs4_wait_for_completion_rpc_task(task
);
8011 status
= task
->tk_status
;
8015 dprintk("<-- %s status=%d\n", __func__
, status
);
8020 nfs4_layoutget_prepare(struct rpc_task
*task
, void *calldata
)
8022 struct nfs4_layoutget
*lgp
= calldata
;
8023 struct nfs_server
*server
= NFS_SERVER(lgp
->args
.inode
);
8024 struct nfs4_session
*session
= nfs4_get_session(server
);
8026 dprintk("--> %s\n", __func__
);
8027 nfs41_setup_sequence(session
, &lgp
->args
.seq_args
,
8028 &lgp
->res
.seq_res
, task
);
8029 dprintk("<-- %s\n", __func__
);
8032 static void nfs4_layoutget_done(struct rpc_task
*task
, void *calldata
)
8034 struct nfs4_layoutget
*lgp
= calldata
;
8036 dprintk("--> %s\n", __func__
);
8037 nfs41_sequence_process(task
, &lgp
->res
.seq_res
);
8038 dprintk("<-- %s\n", __func__
);
8042 nfs4_layoutget_handle_exception(struct rpc_task
*task
,
8043 struct nfs4_layoutget
*lgp
, struct nfs4_exception
*exception
)
8045 struct inode
*inode
= lgp
->args
.inode
;
8046 struct nfs_server
*server
= NFS_SERVER(inode
);
8047 struct pnfs_layout_hdr
*lo
;
8048 int nfs4err
= task
->tk_status
;
8049 int err
, status
= 0;
8052 dprintk("--> %s tk_status => %d\n", __func__
, -task
->tk_status
);
8059 * NFS4ERR_LAYOUTUNAVAILABLE means we are not supposed to use pnfs
8060 * on the file. set tk_status to -ENODATA to tell upper layer to
8063 case -NFS4ERR_LAYOUTUNAVAILABLE
:
8067 * NFS4ERR_BADLAYOUT means the MDS cannot return a layout of
8068 * length lgp->args.minlength != 0 (see RFC5661 section 18.43.3).
8070 case -NFS4ERR_BADLAYOUT
:
8071 status
= -EOVERFLOW
;
8074 * NFS4ERR_LAYOUTTRYLATER is a conflict with another client
8075 * (or clients) writing to the same RAID stripe except when
8076 * the minlength argument is 0 (see RFC5661 section 18.43.3).
8078 * Treat it like we would RECALLCONFLICT -- we retry for a little
8079 * while, and then eventually give up.
8081 case -NFS4ERR_LAYOUTTRYLATER
:
8082 if (lgp
->args
.minlength
== 0) {
8083 status
= -EOVERFLOW
;
8088 case -NFS4ERR_RECALLCONFLICT
:
8089 status
= -ERECALLCONFLICT
;
8091 case -NFS4ERR_EXPIRED
:
8092 case -NFS4ERR_BAD_STATEID
:
8093 exception
->timeout
= 0;
8094 spin_lock(&inode
->i_lock
);
8095 lo
= NFS_I(inode
)->layout
;
8096 /* If the open stateid was bad, then recover it. */
8097 if (!lo
|| test_bit(NFS_LAYOUT_INVALID_STID
, &lo
->plh_flags
) ||
8098 nfs4_stateid_match_other(&lgp
->args
.stateid
,
8099 &lgp
->args
.ctx
->state
->stateid
)) {
8100 spin_unlock(&inode
->i_lock
);
8101 exception
->state
= lgp
->args
.ctx
->state
;
8106 * Mark the bad layout state as invalid, then retry
8108 pnfs_mark_layout_stateid_invalid(lo
, &head
);
8109 spin_unlock(&inode
->i_lock
);
8110 pnfs_free_lseg_list(&head
);
8115 err
= nfs4_handle_exception(server
, nfs4err
, exception
);
8117 if (exception
->retry
)
8123 dprintk("<-- %s\n", __func__
);
8127 static size_t max_response_pages(struct nfs_server
*server
)
8129 u32 max_resp_sz
= server
->nfs_client
->cl_session
->fc_attrs
.max_resp_sz
;
8130 return nfs_page_array_len(0, max_resp_sz
);
8133 static void nfs4_free_pages(struct page
**pages
, size_t size
)
8140 for (i
= 0; i
< size
; i
++) {
8143 __free_page(pages
[i
]);
8148 static struct page
**nfs4_alloc_pages(size_t size
, gfp_t gfp_flags
)
8150 struct page
**pages
;
8153 pages
= kcalloc(size
, sizeof(struct page
*), gfp_flags
);
8155 dprintk("%s: can't alloc array of %zu pages\n", __func__
, size
);
8159 for (i
= 0; i
< size
; i
++) {
8160 pages
[i
] = alloc_page(gfp_flags
);
8162 dprintk("%s: failed to allocate page\n", __func__
);
8163 nfs4_free_pages(pages
, size
);
8171 static void nfs4_layoutget_release(void *calldata
)
8173 struct nfs4_layoutget
*lgp
= calldata
;
8174 struct inode
*inode
= lgp
->args
.inode
;
8175 struct nfs_server
*server
= NFS_SERVER(inode
);
8176 size_t max_pages
= max_response_pages(server
);
8178 dprintk("--> %s\n", __func__
);
8179 nfs4_free_pages(lgp
->args
.layout
.pages
, max_pages
);
8180 pnfs_put_layout_hdr(NFS_I(inode
)->layout
);
8181 put_nfs_open_context(lgp
->args
.ctx
);
8183 dprintk("<-- %s\n", __func__
);
8186 static const struct rpc_call_ops nfs4_layoutget_call_ops
= {
8187 .rpc_call_prepare
= nfs4_layoutget_prepare
,
8188 .rpc_call_done
= nfs4_layoutget_done
,
8189 .rpc_release
= nfs4_layoutget_release
,
8192 struct pnfs_layout_segment
*
8193 nfs4_proc_layoutget(struct nfs4_layoutget
*lgp
, long *timeout
, gfp_t gfp_flags
)
8195 struct inode
*inode
= lgp
->args
.inode
;
8196 struct nfs_server
*server
= NFS_SERVER(inode
);
8197 size_t max_pages
= max_response_pages(server
);
8198 struct rpc_task
*task
;
8199 struct rpc_message msg
= {
8200 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LAYOUTGET
],
8201 .rpc_argp
= &lgp
->args
,
8202 .rpc_resp
= &lgp
->res
,
8203 .rpc_cred
= lgp
->cred
,
8205 struct rpc_task_setup task_setup_data
= {
8206 .rpc_client
= server
->client
,
8207 .rpc_message
= &msg
,
8208 .callback_ops
= &nfs4_layoutget_call_ops
,
8209 .callback_data
= lgp
,
8210 .flags
= RPC_TASK_ASYNC
,
8212 struct pnfs_layout_segment
*lseg
= NULL
;
8213 struct nfs4_exception exception
= {
8215 .timeout
= *timeout
,
8219 dprintk("--> %s\n", __func__
);
8221 /* nfs4_layoutget_release calls pnfs_put_layout_hdr */
8222 pnfs_get_layout_hdr(NFS_I(inode
)->layout
);
8224 lgp
->args
.layout
.pages
= nfs4_alloc_pages(max_pages
, gfp_flags
);
8225 if (!lgp
->args
.layout
.pages
) {
8226 nfs4_layoutget_release(lgp
);
8227 return ERR_PTR(-ENOMEM
);
8229 lgp
->args
.layout
.pglen
= max_pages
* PAGE_SIZE
;
8231 lgp
->res
.layoutp
= &lgp
->args
.layout
;
8232 lgp
->res
.seq_res
.sr_slot
= NULL
;
8233 nfs4_init_sequence(&lgp
->args
.seq_args
, &lgp
->res
.seq_res
, 0);
8235 task
= rpc_run_task(&task_setup_data
);
8237 return ERR_CAST(task
);
8238 status
= nfs4_wait_for_completion_rpc_task(task
);
8240 status
= nfs4_layoutget_handle_exception(task
, lgp
, &exception
);
8241 *timeout
= exception
.timeout
;
8244 trace_nfs4_layoutget(lgp
->args
.ctx
,
8250 /* if layoutp->len is 0, nfs4_layoutget_prepare called rpc_exit */
8251 if (status
== 0 && lgp
->res
.layoutp
->len
)
8252 lseg
= pnfs_layout_process(lgp
);
8253 nfs4_sequence_free_slot(&lgp
->res
.seq_res
);
8255 dprintk("<-- %s status=%d\n", __func__
, status
);
8257 return ERR_PTR(status
);
8262 nfs4_layoutreturn_prepare(struct rpc_task
*task
, void *calldata
)
8264 struct nfs4_layoutreturn
*lrp
= calldata
;
8266 dprintk("--> %s\n", __func__
);
8267 nfs41_setup_sequence(lrp
->clp
->cl_session
,
8268 &lrp
->args
.seq_args
,
8273 static void nfs4_layoutreturn_done(struct rpc_task
*task
, void *calldata
)
8275 struct nfs4_layoutreturn
*lrp
= calldata
;
8276 struct nfs_server
*server
;
8278 dprintk("--> %s\n", __func__
);
8280 if (!nfs41_sequence_process(task
, &lrp
->res
.seq_res
))
8283 server
= NFS_SERVER(lrp
->args
.inode
);
8284 switch (task
->tk_status
) {
8286 task
->tk_status
= 0;
8289 case -NFS4ERR_DELAY
:
8290 if (nfs4_async_handle_error(task
, server
, NULL
, NULL
) != -EAGAIN
)
8292 nfs4_sequence_free_slot(&lrp
->res
.seq_res
);
8293 rpc_restart_call_prepare(task
);
8296 dprintk("<-- %s\n", __func__
);
8299 static void nfs4_layoutreturn_release(void *calldata
)
8301 struct nfs4_layoutreturn
*lrp
= calldata
;
8302 struct pnfs_layout_hdr
*lo
= lrp
->args
.layout
;
8305 dprintk("--> %s\n", __func__
);
8306 spin_lock(&lo
->plh_inode
->i_lock
);
8307 if (lrp
->res
.lrs_present
) {
8308 pnfs_mark_matching_lsegs_invalid(lo
, &freeme
,
8310 be32_to_cpu(lrp
->args
.stateid
.seqid
));
8311 pnfs_set_layout_stateid(lo
, &lrp
->res
.stateid
, true);
8313 pnfs_mark_layout_stateid_invalid(lo
, &freeme
);
8314 pnfs_clear_layoutreturn_waitbit(lo
);
8315 spin_unlock(&lo
->plh_inode
->i_lock
);
8316 nfs4_sequence_free_slot(&lrp
->res
.seq_res
);
8317 pnfs_free_lseg_list(&freeme
);
8318 pnfs_put_layout_hdr(lrp
->args
.layout
);
8319 nfs_iput_and_deactive(lrp
->inode
);
8321 dprintk("<-- %s\n", __func__
);
8324 static const struct rpc_call_ops nfs4_layoutreturn_call_ops
= {
8325 .rpc_call_prepare
= nfs4_layoutreturn_prepare
,
8326 .rpc_call_done
= nfs4_layoutreturn_done
,
8327 .rpc_release
= nfs4_layoutreturn_release
,
8330 int nfs4_proc_layoutreturn(struct nfs4_layoutreturn
*lrp
, bool sync
)
8332 struct rpc_task
*task
;
8333 struct rpc_message msg
= {
8334 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LAYOUTRETURN
],
8335 .rpc_argp
= &lrp
->args
,
8336 .rpc_resp
= &lrp
->res
,
8337 .rpc_cred
= lrp
->cred
,
8339 struct rpc_task_setup task_setup_data
= {
8340 .rpc_client
= NFS_SERVER(lrp
->args
.inode
)->client
,
8341 .rpc_message
= &msg
,
8342 .callback_ops
= &nfs4_layoutreturn_call_ops
,
8343 .callback_data
= lrp
,
8347 nfs4_state_protect(NFS_SERVER(lrp
->args
.inode
)->nfs_client
,
8348 NFS_SP4_MACH_CRED_PNFS_CLEANUP
,
8349 &task_setup_data
.rpc_client
, &msg
);
8351 dprintk("--> %s\n", __func__
);
8353 lrp
->inode
= nfs_igrab_and_active(lrp
->args
.inode
);
8355 nfs4_layoutreturn_release(lrp
);
8358 task_setup_data
.flags
|= RPC_TASK_ASYNC
;
8360 nfs4_init_sequence(&lrp
->args
.seq_args
, &lrp
->res
.seq_res
, 1);
8361 task
= rpc_run_task(&task_setup_data
);
8363 return PTR_ERR(task
);
8365 status
= task
->tk_status
;
8366 trace_nfs4_layoutreturn(lrp
->args
.inode
, &lrp
->args
.stateid
, status
);
8367 dprintk("<-- %s status=%d\n", __func__
, status
);
8373 _nfs4_proc_getdeviceinfo(struct nfs_server
*server
,
8374 struct pnfs_device
*pdev
,
8375 struct rpc_cred
*cred
)
8377 struct nfs4_getdeviceinfo_args args
= {
8379 .notify_types
= NOTIFY_DEVICEID4_CHANGE
|
8380 NOTIFY_DEVICEID4_DELETE
,
8382 struct nfs4_getdeviceinfo_res res
= {
8385 struct rpc_message msg
= {
8386 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GETDEVICEINFO
],
8393 dprintk("--> %s\n", __func__
);
8394 status
= nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
8395 if (res
.notification
& ~args
.notify_types
)
8396 dprintk("%s: unsupported notification\n", __func__
);
8397 if (res
.notification
!= args
.notify_types
)
8400 dprintk("<-- %s status=%d\n", __func__
, status
);
8405 int nfs4_proc_getdeviceinfo(struct nfs_server
*server
,
8406 struct pnfs_device
*pdev
,
8407 struct rpc_cred
*cred
)
8409 struct nfs4_exception exception
= { };
8413 err
= nfs4_handle_exception(server
,
8414 _nfs4_proc_getdeviceinfo(server
, pdev
, cred
),
8416 } while (exception
.retry
);
8419 EXPORT_SYMBOL_GPL(nfs4_proc_getdeviceinfo
);
8421 static void nfs4_layoutcommit_prepare(struct rpc_task
*task
, void *calldata
)
8423 struct nfs4_layoutcommit_data
*data
= calldata
;
8424 struct nfs_server
*server
= NFS_SERVER(data
->args
.inode
);
8425 struct nfs4_session
*session
= nfs4_get_session(server
);
8427 nfs41_setup_sequence(session
,
8428 &data
->args
.seq_args
,
8434 nfs4_layoutcommit_done(struct rpc_task
*task
, void *calldata
)
8436 struct nfs4_layoutcommit_data
*data
= calldata
;
8437 struct nfs_server
*server
= NFS_SERVER(data
->args
.inode
);
8439 if (!nfs41_sequence_done(task
, &data
->res
.seq_res
))
8442 switch (task
->tk_status
) { /* Just ignore these failures */
8443 case -NFS4ERR_DELEG_REVOKED
: /* layout was recalled */
8444 case -NFS4ERR_BADIOMODE
: /* no IOMODE_RW layout for range */
8445 case -NFS4ERR_BADLAYOUT
: /* no layout */
8446 case -NFS4ERR_GRACE
: /* loca_recalim always false */
8447 task
->tk_status
= 0;
8451 if (nfs4_async_handle_error(task
, server
, NULL
, NULL
) == -EAGAIN
) {
8452 rpc_restart_call_prepare(task
);
8458 static void nfs4_layoutcommit_release(void *calldata
)
8460 struct nfs4_layoutcommit_data
*data
= calldata
;
8462 pnfs_cleanup_layoutcommit(data
);
8463 nfs_post_op_update_inode_force_wcc(data
->args
.inode
,
8465 put_rpccred(data
->cred
);
8466 nfs_iput_and_deactive(data
->inode
);
8470 static const struct rpc_call_ops nfs4_layoutcommit_ops
= {
8471 .rpc_call_prepare
= nfs4_layoutcommit_prepare
,
8472 .rpc_call_done
= nfs4_layoutcommit_done
,
8473 .rpc_release
= nfs4_layoutcommit_release
,
8477 nfs4_proc_layoutcommit(struct nfs4_layoutcommit_data
*data
, bool sync
)
8479 struct rpc_message msg
= {
8480 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LAYOUTCOMMIT
],
8481 .rpc_argp
= &data
->args
,
8482 .rpc_resp
= &data
->res
,
8483 .rpc_cred
= data
->cred
,
8485 struct rpc_task_setup task_setup_data
= {
8486 .task
= &data
->task
,
8487 .rpc_client
= NFS_CLIENT(data
->args
.inode
),
8488 .rpc_message
= &msg
,
8489 .callback_ops
= &nfs4_layoutcommit_ops
,
8490 .callback_data
= data
,
8492 struct rpc_task
*task
;
8495 dprintk("NFS: initiating layoutcommit call. sync %d "
8496 "lbw: %llu inode %lu\n", sync
,
8497 data
->args
.lastbytewritten
,
8498 data
->args
.inode
->i_ino
);
8501 data
->inode
= nfs_igrab_and_active(data
->args
.inode
);
8502 if (data
->inode
== NULL
) {
8503 nfs4_layoutcommit_release(data
);
8506 task_setup_data
.flags
= RPC_TASK_ASYNC
;
8508 nfs4_init_sequence(&data
->args
.seq_args
, &data
->res
.seq_res
, 1);
8509 task
= rpc_run_task(&task_setup_data
);
8511 return PTR_ERR(task
);
8513 status
= task
->tk_status
;
8514 trace_nfs4_layoutcommit(data
->args
.inode
, &data
->args
.stateid
, status
);
8515 dprintk("%s: status %d\n", __func__
, status
);
8521 * Use the state managment nfs_client cl_rpcclient, which uses krb5i (if
8522 * possible) as per RFC3530bis and RFC5661 Security Considerations sections
8525 _nfs41_proc_secinfo_no_name(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
8526 struct nfs_fsinfo
*info
,
8527 struct nfs4_secinfo_flavors
*flavors
, bool use_integrity
)
8529 struct nfs41_secinfo_no_name_args args
= {
8530 .style
= SECINFO_STYLE_CURRENT_FH
,
8532 struct nfs4_secinfo_res res
= {
8535 struct rpc_message msg
= {
8536 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SECINFO_NO_NAME
],
8540 struct rpc_clnt
*clnt
= server
->client
;
8541 struct rpc_cred
*cred
= NULL
;
8544 if (use_integrity
) {
8545 clnt
= server
->nfs_client
->cl_rpcclient
;
8546 cred
= nfs4_get_clid_cred(server
->nfs_client
);
8547 msg
.rpc_cred
= cred
;
8550 dprintk("--> %s\n", __func__
);
8551 status
= nfs4_call_sync(clnt
, server
, &msg
, &args
.seq_args
,
8553 dprintk("<-- %s status=%d\n", __func__
, status
);
8562 nfs41_proc_secinfo_no_name(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
8563 struct nfs_fsinfo
*info
, struct nfs4_secinfo_flavors
*flavors
)
8565 struct nfs4_exception exception
= { };
8568 /* first try using integrity protection */
8569 err
= -NFS4ERR_WRONGSEC
;
8571 /* try to use integrity protection with machine cred */
8572 if (_nfs4_is_integrity_protected(server
->nfs_client
))
8573 err
= _nfs41_proc_secinfo_no_name(server
, fhandle
, info
,
8577 * if unable to use integrity protection, or SECINFO with
8578 * integrity protection returns NFS4ERR_WRONGSEC (which is
8579 * disallowed by spec, but exists in deployed servers) use
8580 * the current filesystem's rpc_client and the user cred.
8582 if (err
== -NFS4ERR_WRONGSEC
)
8583 err
= _nfs41_proc_secinfo_no_name(server
, fhandle
, info
,
8588 case -NFS4ERR_WRONGSEC
:
8592 err
= nfs4_handle_exception(server
, err
, &exception
);
8594 } while (exception
.retry
);
8600 nfs41_find_root_sec(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
8601 struct nfs_fsinfo
*info
)
8605 rpc_authflavor_t flavor
= RPC_AUTH_MAXFLAVOR
;
8606 struct nfs4_secinfo_flavors
*flavors
;
8607 struct nfs4_secinfo4
*secinfo
;
8610 page
= alloc_page(GFP_KERNEL
);
8616 flavors
= page_address(page
);
8617 err
= nfs41_proc_secinfo_no_name(server
, fhandle
, info
, flavors
);
8620 * Fall back on "guess and check" method if
8621 * the server doesn't support SECINFO_NO_NAME
8623 if (err
== -NFS4ERR_WRONGSEC
|| err
== -ENOTSUPP
) {
8624 err
= nfs4_find_root_sec(server
, fhandle
, info
);
8630 for (i
= 0; i
< flavors
->num_flavors
; i
++) {
8631 secinfo
= &flavors
->flavors
[i
];
8633 switch (secinfo
->flavor
) {
8637 flavor
= rpcauth_get_pseudoflavor(secinfo
->flavor
,
8638 &secinfo
->flavor_info
);
8641 flavor
= RPC_AUTH_MAXFLAVOR
;
8645 if (!nfs_auth_info_match(&server
->auth_info
, flavor
))
8646 flavor
= RPC_AUTH_MAXFLAVOR
;
8648 if (flavor
!= RPC_AUTH_MAXFLAVOR
) {
8649 err
= nfs4_lookup_root_sec(server
, fhandle
,
8656 if (flavor
== RPC_AUTH_MAXFLAVOR
)
8667 static int _nfs41_test_stateid(struct nfs_server
*server
,
8668 nfs4_stateid
*stateid
,
8669 struct rpc_cred
*cred
)
8672 struct nfs41_test_stateid_args args
= {
8675 struct nfs41_test_stateid_res res
;
8676 struct rpc_message msg
= {
8677 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_TEST_STATEID
],
8682 struct rpc_clnt
*rpc_client
= server
->client
;
8684 nfs4_state_protect(server
->nfs_client
, NFS_SP4_MACH_CRED_STATEID
,
8687 dprintk("NFS call test_stateid %p\n", stateid
);
8688 nfs4_init_sequence(&args
.seq_args
, &res
.seq_res
, 0);
8689 nfs4_set_sequence_privileged(&args
.seq_args
);
8690 status
= nfs4_call_sync_sequence(rpc_client
, server
, &msg
,
8691 &args
.seq_args
, &res
.seq_res
);
8692 if (status
!= NFS_OK
) {
8693 dprintk("NFS reply test_stateid: failed, %d\n", status
);
8696 dprintk("NFS reply test_stateid: succeeded, %d\n", -res
.status
);
8701 * nfs41_test_stateid - perform a TEST_STATEID operation
8703 * @server: server / transport on which to perform the operation
8704 * @stateid: state ID to test
8707 * Returns NFS_OK if the server recognizes that "stateid" is valid.
8708 * Otherwise a negative NFS4ERR value is returned if the operation
8709 * failed or the state ID is not currently valid.
8711 static int nfs41_test_stateid(struct nfs_server
*server
,
8712 nfs4_stateid
*stateid
,
8713 struct rpc_cred
*cred
)
8715 struct nfs4_exception exception
= { };
8718 err
= _nfs41_test_stateid(server
, stateid
, cred
);
8719 if (err
!= -NFS4ERR_DELAY
)
8721 nfs4_handle_exception(server
, err
, &exception
);
8722 } while (exception
.retry
);
8726 struct nfs_free_stateid_data
{
8727 struct nfs_server
*server
;
8728 struct nfs41_free_stateid_args args
;
8729 struct nfs41_free_stateid_res res
;
8732 static void nfs41_free_stateid_prepare(struct rpc_task
*task
, void *calldata
)
8734 struct nfs_free_stateid_data
*data
= calldata
;
8735 nfs41_setup_sequence(nfs4_get_session(data
->server
),
8736 &data
->args
.seq_args
,
8741 static void nfs41_free_stateid_done(struct rpc_task
*task
, void *calldata
)
8743 struct nfs_free_stateid_data
*data
= calldata
;
8745 nfs41_sequence_done(task
, &data
->res
.seq_res
);
8747 switch (task
->tk_status
) {
8748 case -NFS4ERR_DELAY
:
8749 if (nfs4_async_handle_error(task
, data
->server
, NULL
, NULL
) == -EAGAIN
)
8750 rpc_restart_call_prepare(task
);
8754 static void nfs41_free_stateid_release(void *calldata
)
8759 static const struct rpc_call_ops nfs41_free_stateid_ops
= {
8760 .rpc_call_prepare
= nfs41_free_stateid_prepare
,
8761 .rpc_call_done
= nfs41_free_stateid_done
,
8762 .rpc_release
= nfs41_free_stateid_release
,
8765 static struct rpc_task
*_nfs41_free_stateid(struct nfs_server
*server
,
8766 nfs4_stateid
*stateid
,
8767 struct rpc_cred
*cred
,
8770 struct rpc_message msg
= {
8771 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_FREE_STATEID
],
8774 struct rpc_task_setup task_setup
= {
8775 .rpc_client
= server
->client
,
8776 .rpc_message
= &msg
,
8777 .callback_ops
= &nfs41_free_stateid_ops
,
8778 .flags
= RPC_TASK_ASYNC
,
8780 struct nfs_free_stateid_data
*data
;
8782 nfs4_state_protect(server
->nfs_client
, NFS_SP4_MACH_CRED_STATEID
,
8783 &task_setup
.rpc_client
, &msg
);
8785 dprintk("NFS call free_stateid %p\n", stateid
);
8786 data
= kmalloc(sizeof(*data
), GFP_NOFS
);
8788 return ERR_PTR(-ENOMEM
);
8789 data
->server
= server
;
8790 nfs4_stateid_copy(&data
->args
.stateid
, stateid
);
8792 task_setup
.callback_data
= data
;
8794 msg
.rpc_argp
= &data
->args
;
8795 msg
.rpc_resp
= &data
->res
;
8796 nfs4_init_sequence(&data
->args
.seq_args
, &data
->res
.seq_res
, 0);
8798 nfs4_set_sequence_privileged(&data
->args
.seq_args
);
8800 return rpc_run_task(&task_setup
);
8804 * nfs41_free_stateid - perform a FREE_STATEID operation
8806 * @server: server / transport on which to perform the operation
8807 * @stateid: state ID to release
8810 * Returns NFS_OK if the server freed "stateid". Otherwise a
8811 * negative NFS4ERR value is returned.
8813 static int nfs41_free_stateid(struct nfs_server
*server
,
8814 nfs4_stateid
*stateid
,
8815 struct rpc_cred
*cred
)
8817 struct rpc_task
*task
;
8820 task
= _nfs41_free_stateid(server
, stateid
, cred
, true);
8822 return PTR_ERR(task
);
8823 ret
= rpc_wait_for_completion_task(task
);
8825 ret
= task
->tk_status
;
8831 nfs41_free_lock_state(struct nfs_server
*server
, struct nfs4_lock_state
*lsp
)
8833 struct rpc_task
*task
;
8834 struct rpc_cred
*cred
= lsp
->ls_state
->owner
->so_cred
;
8836 task
= _nfs41_free_stateid(server
, &lsp
->ls_stateid
, cred
, false);
8837 nfs4_free_lock_state(server
, lsp
);
8843 static bool nfs41_match_stateid(const nfs4_stateid
*s1
,
8844 const nfs4_stateid
*s2
)
8846 if (s1
->type
!= s2
->type
)
8849 if (memcmp(s1
->other
, s2
->other
, sizeof(s1
->other
)) != 0)
8852 if (s1
->seqid
== s2
->seqid
)
8854 if (s1
->seqid
== 0 || s2
->seqid
== 0)
8860 #endif /* CONFIG_NFS_V4_1 */
8862 static bool nfs4_match_stateid(const nfs4_stateid
*s1
,
8863 const nfs4_stateid
*s2
)
8865 return nfs4_stateid_match(s1
, s2
);
8869 static const struct nfs4_state_recovery_ops nfs40_reboot_recovery_ops
= {
8870 .owner_flag_bit
= NFS_OWNER_RECLAIM_REBOOT
,
8871 .state_flag_bit
= NFS_STATE_RECLAIM_REBOOT
,
8872 .recover_open
= nfs4_open_reclaim
,
8873 .recover_lock
= nfs4_lock_reclaim
,
8874 .establish_clid
= nfs4_init_clientid
,
8875 .detect_trunking
= nfs40_discover_server_trunking
,
8878 #if defined(CONFIG_NFS_V4_1)
8879 static const struct nfs4_state_recovery_ops nfs41_reboot_recovery_ops
= {
8880 .owner_flag_bit
= NFS_OWNER_RECLAIM_REBOOT
,
8881 .state_flag_bit
= NFS_STATE_RECLAIM_REBOOT
,
8882 .recover_open
= nfs4_open_reclaim
,
8883 .recover_lock
= nfs4_lock_reclaim
,
8884 .establish_clid
= nfs41_init_clientid
,
8885 .reclaim_complete
= nfs41_proc_reclaim_complete
,
8886 .detect_trunking
= nfs41_discover_server_trunking
,
8888 #endif /* CONFIG_NFS_V4_1 */
8890 static const struct nfs4_state_recovery_ops nfs40_nograce_recovery_ops
= {
8891 .owner_flag_bit
= NFS_OWNER_RECLAIM_NOGRACE
,
8892 .state_flag_bit
= NFS_STATE_RECLAIM_NOGRACE
,
8893 .recover_open
= nfs40_open_expired
,
8894 .recover_lock
= nfs4_lock_expired
,
8895 .establish_clid
= nfs4_init_clientid
,
8898 #if defined(CONFIG_NFS_V4_1)
8899 static const struct nfs4_state_recovery_ops nfs41_nograce_recovery_ops
= {
8900 .owner_flag_bit
= NFS_OWNER_RECLAIM_NOGRACE
,
8901 .state_flag_bit
= NFS_STATE_RECLAIM_NOGRACE
,
8902 .recover_open
= nfs41_open_expired
,
8903 .recover_lock
= nfs41_lock_expired
,
8904 .establish_clid
= nfs41_init_clientid
,
8906 #endif /* CONFIG_NFS_V4_1 */
8908 static const struct nfs4_state_maintenance_ops nfs40_state_renewal_ops
= {
8909 .sched_state_renewal
= nfs4_proc_async_renew
,
8910 .get_state_renewal_cred_locked
= nfs4_get_renew_cred_locked
,
8911 .renew_lease
= nfs4_proc_renew
,
8914 #if defined(CONFIG_NFS_V4_1)
8915 static const struct nfs4_state_maintenance_ops nfs41_state_renewal_ops
= {
8916 .sched_state_renewal
= nfs41_proc_async_sequence
,
8917 .get_state_renewal_cred_locked
= nfs4_get_machine_cred_locked
,
8918 .renew_lease
= nfs4_proc_sequence
,
8922 static const struct nfs4_mig_recovery_ops nfs40_mig_recovery_ops
= {
8923 .get_locations
= _nfs40_proc_get_locations
,
8924 .fsid_present
= _nfs40_proc_fsid_present
,
8927 #if defined(CONFIG_NFS_V4_1)
8928 static const struct nfs4_mig_recovery_ops nfs41_mig_recovery_ops
= {
8929 .get_locations
= _nfs41_proc_get_locations
,
8930 .fsid_present
= _nfs41_proc_fsid_present
,
8932 #endif /* CONFIG_NFS_V4_1 */
8934 static const struct nfs4_minor_version_ops nfs_v4_0_minor_ops
= {
8936 .init_caps
= NFS_CAP_READDIRPLUS
8937 | NFS_CAP_ATOMIC_OPEN
8938 | NFS_CAP_POSIX_LOCK
,
8939 .init_client
= nfs40_init_client
,
8940 .shutdown_client
= nfs40_shutdown_client
,
8941 .match_stateid
= nfs4_match_stateid
,
8942 .find_root_sec
= nfs4_find_root_sec
,
8943 .free_lock_state
= nfs4_release_lockowner
,
8944 .alloc_seqid
= nfs_alloc_seqid
,
8945 .call_sync_ops
= &nfs40_call_sync_ops
,
8946 .reboot_recovery_ops
= &nfs40_reboot_recovery_ops
,
8947 .nograce_recovery_ops
= &nfs40_nograce_recovery_ops
,
8948 .state_renewal_ops
= &nfs40_state_renewal_ops
,
8949 .mig_recovery_ops
= &nfs40_mig_recovery_ops
,
8952 #if defined(CONFIG_NFS_V4_1)
8953 static struct nfs_seqid
*
8954 nfs_alloc_no_seqid(struct nfs_seqid_counter
*arg1
, gfp_t arg2
)
8959 static const struct nfs4_minor_version_ops nfs_v4_1_minor_ops
= {
8961 .init_caps
= NFS_CAP_READDIRPLUS
8962 | NFS_CAP_ATOMIC_OPEN
8963 | NFS_CAP_POSIX_LOCK
8964 | NFS_CAP_STATEID_NFSV41
8965 | NFS_CAP_ATOMIC_OPEN_V1
,
8966 .init_client
= nfs41_init_client
,
8967 .shutdown_client
= nfs41_shutdown_client
,
8968 .match_stateid
= nfs41_match_stateid
,
8969 .find_root_sec
= nfs41_find_root_sec
,
8970 .free_lock_state
= nfs41_free_lock_state
,
8971 .alloc_seqid
= nfs_alloc_no_seqid
,
8972 .session_trunk
= nfs4_test_session_trunk
,
8973 .call_sync_ops
= &nfs41_call_sync_ops
,
8974 .reboot_recovery_ops
= &nfs41_reboot_recovery_ops
,
8975 .nograce_recovery_ops
= &nfs41_nograce_recovery_ops
,
8976 .state_renewal_ops
= &nfs41_state_renewal_ops
,
8977 .mig_recovery_ops
= &nfs41_mig_recovery_ops
,
8981 #if defined(CONFIG_NFS_V4_2)
8982 static const struct nfs4_minor_version_ops nfs_v4_2_minor_ops
= {
8984 .init_caps
= NFS_CAP_READDIRPLUS
8985 | NFS_CAP_ATOMIC_OPEN
8986 | NFS_CAP_POSIX_LOCK
8987 | NFS_CAP_STATEID_NFSV41
8988 | NFS_CAP_ATOMIC_OPEN_V1
8991 | NFS_CAP_DEALLOCATE
8993 | NFS_CAP_LAYOUTSTATS
8995 .init_client
= nfs41_init_client
,
8996 .shutdown_client
= nfs41_shutdown_client
,
8997 .match_stateid
= nfs41_match_stateid
,
8998 .find_root_sec
= nfs41_find_root_sec
,
8999 .free_lock_state
= nfs41_free_lock_state
,
9000 .call_sync_ops
= &nfs41_call_sync_ops
,
9001 .alloc_seqid
= nfs_alloc_no_seqid
,
9002 .session_trunk
= nfs4_test_session_trunk
,
9003 .reboot_recovery_ops
= &nfs41_reboot_recovery_ops
,
9004 .nograce_recovery_ops
= &nfs41_nograce_recovery_ops
,
9005 .state_renewal_ops
= &nfs41_state_renewal_ops
,
9006 .mig_recovery_ops
= &nfs41_mig_recovery_ops
,
9010 const struct nfs4_minor_version_ops
*nfs_v4_minor_ops
[] = {
9011 [0] = &nfs_v4_0_minor_ops
,
9012 #if defined(CONFIG_NFS_V4_1)
9013 [1] = &nfs_v4_1_minor_ops
,
9015 #if defined(CONFIG_NFS_V4_2)
9016 [2] = &nfs_v4_2_minor_ops
,
9020 static ssize_t
nfs4_listxattr(struct dentry
*dentry
, char *list
, size_t size
)
9022 ssize_t error
, error2
;
9024 error
= generic_listxattr(dentry
, list
, size
);
9032 error2
= nfs4_listxattr_nfs4_label(d_inode(dentry
), list
, size
);
9035 return error
+ error2
;
9038 static const struct inode_operations nfs4_dir_inode_operations
= {
9039 .create
= nfs_create
,
9040 .lookup
= nfs_lookup
,
9041 .atomic_open
= nfs_atomic_open
,
9043 .unlink
= nfs_unlink
,
9044 .symlink
= nfs_symlink
,
9048 .rename
= nfs_rename
,
9049 .permission
= nfs_permission
,
9050 .getattr
= nfs_getattr
,
9051 .setattr
= nfs_setattr
,
9052 .getxattr
= generic_getxattr
,
9053 .setxattr
= generic_setxattr
,
9054 .listxattr
= nfs4_listxattr
,
9055 .removexattr
= generic_removexattr
,
9058 static const struct inode_operations nfs4_file_inode_operations
= {
9059 .permission
= nfs_permission
,
9060 .getattr
= nfs_getattr
,
9061 .setattr
= nfs_setattr
,
9062 .getxattr
= generic_getxattr
,
9063 .setxattr
= generic_setxattr
,
9064 .listxattr
= nfs4_listxattr
,
9065 .removexattr
= generic_removexattr
,
9068 const struct nfs_rpc_ops nfs_v4_clientops
= {
9069 .version
= 4, /* protocol version */
9070 .dentry_ops
= &nfs4_dentry_operations
,
9071 .dir_inode_ops
= &nfs4_dir_inode_operations
,
9072 .file_inode_ops
= &nfs4_file_inode_operations
,
9073 .file_ops
= &nfs4_file_operations
,
9074 .getroot
= nfs4_proc_get_root
,
9075 .submount
= nfs4_submount
,
9076 .try_mount
= nfs4_try_mount
,
9077 .getattr
= nfs4_proc_getattr
,
9078 .setattr
= nfs4_proc_setattr
,
9079 .lookup
= nfs4_proc_lookup
,
9080 .access
= nfs4_proc_access
,
9081 .readlink
= nfs4_proc_readlink
,
9082 .create
= nfs4_proc_create
,
9083 .remove
= nfs4_proc_remove
,
9084 .unlink_setup
= nfs4_proc_unlink_setup
,
9085 .unlink_rpc_prepare
= nfs4_proc_unlink_rpc_prepare
,
9086 .unlink_done
= nfs4_proc_unlink_done
,
9087 .rename_setup
= nfs4_proc_rename_setup
,
9088 .rename_rpc_prepare
= nfs4_proc_rename_rpc_prepare
,
9089 .rename_done
= nfs4_proc_rename_done
,
9090 .link
= nfs4_proc_link
,
9091 .symlink
= nfs4_proc_symlink
,
9092 .mkdir
= nfs4_proc_mkdir
,
9093 .rmdir
= nfs4_proc_remove
,
9094 .readdir
= nfs4_proc_readdir
,
9095 .mknod
= nfs4_proc_mknod
,
9096 .statfs
= nfs4_proc_statfs
,
9097 .fsinfo
= nfs4_proc_fsinfo
,
9098 .pathconf
= nfs4_proc_pathconf
,
9099 .set_capabilities
= nfs4_server_capabilities
,
9100 .decode_dirent
= nfs4_decode_dirent
,
9101 .pgio_rpc_prepare
= nfs4_proc_pgio_rpc_prepare
,
9102 .read_setup
= nfs4_proc_read_setup
,
9103 .read_done
= nfs4_read_done
,
9104 .write_setup
= nfs4_proc_write_setup
,
9105 .write_done
= nfs4_write_done
,
9106 .commit_setup
= nfs4_proc_commit_setup
,
9107 .commit_rpc_prepare
= nfs4_proc_commit_rpc_prepare
,
9108 .commit_done
= nfs4_commit_done
,
9109 .lock
= nfs4_proc_lock
,
9110 .clear_acl_cache
= nfs4_zap_acl_attr
,
9111 .close_context
= nfs4_close_context
,
9112 .open_context
= nfs4_atomic_open
,
9113 .have_delegation
= nfs4_have_delegation
,
9114 .return_delegation
= nfs4_inode_return_delegation
,
9115 .alloc_client
= nfs4_alloc_client
,
9116 .init_client
= nfs4_init_client
,
9117 .free_client
= nfs4_free_client
,
9118 .create_server
= nfs4_create_server
,
9119 .clone_server
= nfs_clone_server
,
9122 static const struct xattr_handler nfs4_xattr_nfs4_acl_handler
= {
9123 .name
= XATTR_NAME_NFSV4_ACL
,
9124 .list
= nfs4_xattr_list_nfs4_acl
,
9125 .get
= nfs4_xattr_get_nfs4_acl
,
9126 .set
= nfs4_xattr_set_nfs4_acl
,
9129 const struct xattr_handler
*nfs4_xattr_handlers
[] = {
9130 &nfs4_xattr_nfs4_acl_handler
,
9131 #ifdef CONFIG_NFS_V4_SECURITY_LABEL
9132 &nfs4_xattr_nfs4_label_handler
,