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/string.h>
42 #include <linux/ratelimit.h>
43 #include <linux/printk.h>
44 #include <linux/slab.h>
45 #include <linux/sunrpc/clnt.h>
46 #include <linux/nfs.h>
47 #include <linux/nfs4.h>
48 #include <linux/nfs_fs.h>
49 #include <linux/nfs_page.h>
50 #include <linux/nfs_mount.h>
51 #include <linux/namei.h>
52 #include <linux/mount.h>
53 #include <linux/module.h>
54 #include <linux/nfs_idmap.h>
55 #include <linux/xattr.h>
56 #include <linux/utsname.h>
57 #include <linux/freezer.h>
60 #include "delegation.h"
66 #include "nfs4session.h"
69 #include "nfs4trace.h"
71 #define NFSDBG_FACILITY NFSDBG_PROC
73 #define NFS4_POLL_RETRY_MIN (HZ/10)
74 #define NFS4_POLL_RETRY_MAX (15*HZ)
77 static int _nfs4_proc_open(struct nfs4_opendata
*data
);
78 static int _nfs4_recover_proc_open(struct nfs4_opendata
*data
);
79 static int nfs4_do_fsinfo(struct nfs_server
*, struct nfs_fh
*, struct nfs_fsinfo
*);
80 static int nfs4_async_handle_error(struct rpc_task
*, const struct nfs_server
*, struct nfs4_state
*, long *);
81 static void nfs_fixup_referral_attributes(struct nfs_fattr
*fattr
);
82 static int nfs4_proc_getattr(struct nfs_server
*, struct nfs_fh
*, struct nfs_fattr
*, struct nfs4_label
*label
);
83 static int _nfs4_proc_getattr(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fattr
*fattr
, struct nfs4_label
*label
);
84 static int nfs4_do_setattr(struct inode
*inode
, struct rpc_cred
*cred
,
85 struct nfs_fattr
*fattr
, struct iattr
*sattr
,
86 struct nfs4_state
*state
, struct nfs4_label
*ilabel
,
87 struct nfs4_label
*olabel
);
88 #ifdef CONFIG_NFS_V4_1
89 static int nfs41_test_stateid(struct nfs_server
*, nfs4_stateid
*,
91 static int nfs41_free_stateid(struct nfs_server
*, nfs4_stateid
*,
95 #ifdef CONFIG_NFS_V4_SECURITY_LABEL
96 static inline struct nfs4_label
*
97 nfs4_label_init_security(struct inode
*dir
, struct dentry
*dentry
,
98 struct iattr
*sattr
, struct nfs4_label
*label
)
105 if (nfs_server_capable(dir
, NFS_CAP_SECURITY_LABEL
) == 0)
108 err
= security_dentry_init_security(dentry
, sattr
->ia_mode
,
109 &dentry
->d_name
, (void **)&label
->label
, &label
->len
);
116 nfs4_label_release_security(struct nfs4_label
*label
)
119 security_release_secctx(label
->label
, label
->len
);
121 static inline u32
*nfs4_bitmask(struct nfs_server
*server
, struct nfs4_label
*label
)
124 return server
->attr_bitmask
;
126 return server
->attr_bitmask_nl
;
129 static inline struct nfs4_label
*
130 nfs4_label_init_security(struct inode
*dir
, struct dentry
*dentry
,
131 struct iattr
*sattr
, struct nfs4_label
*l
)
134 nfs4_label_release_security(struct nfs4_label
*label
)
137 nfs4_bitmask(struct nfs_server
*server
, struct nfs4_label
*label
)
138 { return server
->attr_bitmask
; }
141 /* Prevent leaks of NFSv4 errors into userland */
142 static int nfs4_map_errors(int err
)
147 case -NFS4ERR_RESOURCE
:
148 case -NFS4ERR_LAYOUTTRYLATER
:
149 case -NFS4ERR_RECALLCONFLICT
:
151 case -NFS4ERR_WRONGSEC
:
152 case -NFS4ERR_WRONG_CRED
:
154 case -NFS4ERR_BADOWNER
:
155 case -NFS4ERR_BADNAME
:
157 case -NFS4ERR_SHARE_DENIED
:
159 case -NFS4ERR_MINOR_VERS_MISMATCH
:
160 return -EPROTONOSUPPORT
;
161 case -NFS4ERR_ACCESS
:
163 case -NFS4ERR_FILE_OPEN
:
166 dprintk("%s could not handle NFSv4 error %d\n",
174 * This is our standard bitmap for GETATTR requests.
176 const u32 nfs4_fattr_bitmap
[3] = {
178 | FATTR4_WORD0_CHANGE
181 | FATTR4_WORD0_FILEID
,
183 | FATTR4_WORD1_NUMLINKS
185 | FATTR4_WORD1_OWNER_GROUP
186 | FATTR4_WORD1_RAWDEV
187 | FATTR4_WORD1_SPACE_USED
188 | FATTR4_WORD1_TIME_ACCESS
189 | FATTR4_WORD1_TIME_METADATA
190 | FATTR4_WORD1_TIME_MODIFY
,
191 #ifdef CONFIG_NFS_V4_SECURITY_LABEL
192 FATTR4_WORD2_SECURITY_LABEL
196 static const u32 nfs4_pnfs_open_bitmap
[3] = {
198 | FATTR4_WORD0_CHANGE
201 | FATTR4_WORD0_FILEID
,
203 | FATTR4_WORD1_NUMLINKS
205 | FATTR4_WORD1_OWNER_GROUP
206 | FATTR4_WORD1_RAWDEV
207 | FATTR4_WORD1_SPACE_USED
208 | FATTR4_WORD1_TIME_ACCESS
209 | FATTR4_WORD1_TIME_METADATA
210 | FATTR4_WORD1_TIME_MODIFY
,
211 FATTR4_WORD2_MDSTHRESHOLD
214 static const u32 nfs4_open_noattr_bitmap
[3] = {
216 | FATTR4_WORD0_CHANGE
217 | FATTR4_WORD0_FILEID
,
220 const u32 nfs4_statfs_bitmap
[3] = {
221 FATTR4_WORD0_FILES_AVAIL
222 | FATTR4_WORD0_FILES_FREE
223 | FATTR4_WORD0_FILES_TOTAL
,
224 FATTR4_WORD1_SPACE_AVAIL
225 | FATTR4_WORD1_SPACE_FREE
226 | FATTR4_WORD1_SPACE_TOTAL
229 const u32 nfs4_pathconf_bitmap
[3] = {
231 | FATTR4_WORD0_MAXNAME
,
235 const u32 nfs4_fsinfo_bitmap
[3] = { FATTR4_WORD0_MAXFILESIZE
236 | FATTR4_WORD0_MAXREAD
237 | FATTR4_WORD0_MAXWRITE
238 | FATTR4_WORD0_LEASE_TIME
,
239 FATTR4_WORD1_TIME_DELTA
240 | FATTR4_WORD1_FS_LAYOUT_TYPES
,
241 FATTR4_WORD2_LAYOUT_BLKSIZE
244 const u32 nfs4_fs_locations_bitmap
[3] = {
246 | FATTR4_WORD0_CHANGE
249 | FATTR4_WORD0_FILEID
250 | FATTR4_WORD0_FS_LOCATIONS
,
252 | FATTR4_WORD1_NUMLINKS
254 | FATTR4_WORD1_OWNER_GROUP
255 | FATTR4_WORD1_RAWDEV
256 | FATTR4_WORD1_SPACE_USED
257 | FATTR4_WORD1_TIME_ACCESS
258 | FATTR4_WORD1_TIME_METADATA
259 | FATTR4_WORD1_TIME_MODIFY
260 | FATTR4_WORD1_MOUNTED_ON_FILEID
,
263 static void nfs4_setup_readdir(u64 cookie
, __be32
*verifier
, struct dentry
*dentry
,
264 struct nfs4_readdir_arg
*readdir
)
269 readdir
->cookie
= cookie
;
270 memcpy(&readdir
->verifier
, verifier
, sizeof(readdir
->verifier
));
275 memset(&readdir
->verifier
, 0, sizeof(readdir
->verifier
));
280 * NFSv4 servers do not return entries for '.' and '..'
281 * Therefore, we fake these entries here. We let '.'
282 * have cookie 0 and '..' have cookie 1. Note that
283 * when talking to the server, we always send cookie 0
286 start
= p
= kmap_atomic(*readdir
->pages
);
289 *p
++ = xdr_one
; /* next */
290 *p
++ = xdr_zero
; /* cookie, first word */
291 *p
++ = xdr_one
; /* cookie, second word */
292 *p
++ = xdr_one
; /* entry len */
293 memcpy(p
, ".\0\0\0", 4); /* entry */
295 *p
++ = xdr_one
; /* bitmap length */
296 *p
++ = htonl(FATTR4_WORD0_FILEID
); /* bitmap */
297 *p
++ = htonl(8); /* attribute buffer length */
298 p
= xdr_encode_hyper(p
, NFS_FILEID(dentry
->d_inode
));
301 *p
++ = xdr_one
; /* next */
302 *p
++ = xdr_zero
; /* cookie, first word */
303 *p
++ = xdr_two
; /* cookie, second word */
304 *p
++ = xdr_two
; /* entry len */
305 memcpy(p
, "..\0\0", 4); /* entry */
307 *p
++ = xdr_one
; /* bitmap length */
308 *p
++ = htonl(FATTR4_WORD0_FILEID
); /* bitmap */
309 *p
++ = htonl(8); /* attribute buffer length */
310 p
= xdr_encode_hyper(p
, NFS_FILEID(dentry
->d_parent
->d_inode
));
312 readdir
->pgbase
= (char *)p
- (char *)start
;
313 readdir
->count
-= readdir
->pgbase
;
314 kunmap_atomic(start
);
317 static long nfs4_update_delay(long *timeout
)
321 return NFS4_POLL_RETRY_MAX
;
323 *timeout
= NFS4_POLL_RETRY_MIN
;
324 if (*timeout
> NFS4_POLL_RETRY_MAX
)
325 *timeout
= NFS4_POLL_RETRY_MAX
;
331 static int nfs4_delay(struct rpc_clnt
*clnt
, long *timeout
)
337 freezable_schedule_timeout_killable_unsafe(
338 nfs4_update_delay(timeout
));
339 if (fatal_signal_pending(current
))
344 /* This is the error handling routine for processes that are allowed
347 static int nfs4_handle_exception(struct nfs_server
*server
, int errorcode
, struct nfs4_exception
*exception
)
349 struct nfs_client
*clp
= server
->nfs_client
;
350 struct nfs4_state
*state
= exception
->state
;
351 struct inode
*inode
= exception
->inode
;
354 exception
->retry
= 0;
358 case -NFS4ERR_OPENMODE
:
359 if (inode
&& nfs4_have_delegation(inode
, FMODE_READ
)) {
360 nfs4_inode_return_delegation(inode
);
361 exception
->retry
= 1;
366 ret
= nfs4_schedule_stateid_recovery(server
, state
);
369 goto wait_on_recovery
;
370 case -NFS4ERR_DELEG_REVOKED
:
371 case -NFS4ERR_ADMIN_REVOKED
:
372 case -NFS4ERR_BAD_STATEID
:
373 if (inode
!= NULL
&& nfs4_have_delegation(inode
, FMODE_READ
)) {
374 nfs_remove_bad_delegation(inode
);
375 exception
->retry
= 1;
380 ret
= nfs4_schedule_stateid_recovery(server
, state
);
383 goto wait_on_recovery
;
384 case -NFS4ERR_EXPIRED
:
386 ret
= nfs4_schedule_stateid_recovery(server
, state
);
390 case -NFS4ERR_STALE_STATEID
:
391 case -NFS4ERR_STALE_CLIENTID
:
392 nfs4_schedule_lease_recovery(clp
);
393 goto wait_on_recovery
;
395 ret
= nfs4_schedule_migration_recovery(server
);
398 goto wait_on_recovery
;
399 case -NFS4ERR_LEASE_MOVED
:
400 nfs4_schedule_lease_moved_recovery(clp
);
401 goto wait_on_recovery
;
402 #if defined(CONFIG_NFS_V4_1)
403 case -NFS4ERR_BADSESSION
:
404 case -NFS4ERR_BADSLOT
:
405 case -NFS4ERR_BAD_HIGH_SLOT
:
406 case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION
:
407 case -NFS4ERR_DEADSESSION
:
408 case -NFS4ERR_SEQ_FALSE_RETRY
:
409 case -NFS4ERR_SEQ_MISORDERED
:
410 dprintk("%s ERROR: %d Reset session\n", __func__
,
412 nfs4_schedule_session_recovery(clp
->cl_session
, errorcode
);
413 goto wait_on_recovery
;
414 #endif /* defined(CONFIG_NFS_V4_1) */
415 case -NFS4ERR_FILE_OPEN
:
416 if (exception
->timeout
> HZ
) {
417 /* We have retried a decent amount, time to
425 ret
= nfs4_delay(server
->client
, &exception
->timeout
);
428 case -NFS4ERR_RETRY_UNCACHED_REP
:
429 case -NFS4ERR_OLD_STATEID
:
430 exception
->retry
= 1;
432 case -NFS4ERR_BADOWNER
:
433 /* The following works around a Linux server bug! */
434 case -NFS4ERR_BADNAME
:
435 if (server
->caps
& NFS_CAP_UIDGID_NOMAP
) {
436 server
->caps
&= ~NFS_CAP_UIDGID_NOMAP
;
437 exception
->retry
= 1;
438 printk(KERN_WARNING
"NFS: v4 server %s "
439 "does not accept raw "
441 "Reenabling the idmapper.\n",
442 server
->nfs_client
->cl_hostname
);
445 /* We failed to handle the error */
446 return nfs4_map_errors(ret
);
448 ret
= nfs4_wait_clnt_recover(clp
);
449 if (test_bit(NFS_MIG_FAILED
, &server
->mig_status
))
452 exception
->retry
= 1;
457 * Return 'true' if 'clp' is using an rpc_client that is integrity protected
458 * or 'false' otherwise.
460 static bool _nfs4_is_integrity_protected(struct nfs_client
*clp
)
462 rpc_authflavor_t flavor
= clp
->cl_rpcclient
->cl_auth
->au_flavor
;
464 if (flavor
== RPC_AUTH_GSS_KRB5I
||
465 flavor
== RPC_AUTH_GSS_KRB5P
)
471 static void do_renew_lease(struct nfs_client
*clp
, unsigned long timestamp
)
473 spin_lock(&clp
->cl_lock
);
474 if (time_before(clp
->cl_last_renewal
,timestamp
))
475 clp
->cl_last_renewal
= timestamp
;
476 spin_unlock(&clp
->cl_lock
);
479 static void renew_lease(const struct nfs_server
*server
, unsigned long timestamp
)
481 do_renew_lease(server
->nfs_client
, timestamp
);
484 struct nfs4_call_sync_data
{
485 const struct nfs_server
*seq_server
;
486 struct nfs4_sequence_args
*seq_args
;
487 struct nfs4_sequence_res
*seq_res
;
490 static void nfs4_init_sequence(struct nfs4_sequence_args
*args
,
491 struct nfs4_sequence_res
*res
, int cache_reply
)
493 args
->sa_slot
= NULL
;
494 args
->sa_cache_this
= cache_reply
;
495 args
->sa_privileged
= 0;
500 static void nfs4_set_sequence_privileged(struct nfs4_sequence_args
*args
)
502 args
->sa_privileged
= 1;
505 static int nfs40_setup_sequence(const struct nfs_server
*server
,
506 struct nfs4_sequence_args
*args
,
507 struct nfs4_sequence_res
*res
,
508 struct rpc_task
*task
)
510 struct nfs4_slot_table
*tbl
= server
->nfs_client
->cl_slot_tbl
;
511 struct nfs4_slot
*slot
;
513 /* slot already allocated? */
514 if (res
->sr_slot
!= NULL
)
517 spin_lock(&tbl
->slot_tbl_lock
);
518 if (nfs4_slot_tbl_draining(tbl
) && !args
->sa_privileged
)
521 slot
= nfs4_alloc_slot(tbl
);
523 if (slot
== ERR_PTR(-ENOMEM
))
524 task
->tk_timeout
= HZ
>> 2;
527 spin_unlock(&tbl
->slot_tbl_lock
);
529 args
->sa_slot
= slot
;
533 rpc_call_start(task
);
537 if (args
->sa_privileged
)
538 rpc_sleep_on_priority(&tbl
->slot_tbl_waitq
, task
,
539 NULL
, RPC_PRIORITY_PRIVILEGED
);
541 rpc_sleep_on(&tbl
->slot_tbl_waitq
, task
, NULL
);
542 spin_unlock(&tbl
->slot_tbl_lock
);
546 static int nfs40_sequence_done(struct rpc_task
*task
,
547 struct nfs4_sequence_res
*res
)
549 struct nfs4_slot
*slot
= res
->sr_slot
;
550 struct nfs4_slot_table
*tbl
;
556 spin_lock(&tbl
->slot_tbl_lock
);
557 if (!nfs41_wake_and_assign_slot(tbl
, slot
))
558 nfs4_free_slot(tbl
, slot
);
559 spin_unlock(&tbl
->slot_tbl_lock
);
566 #if defined(CONFIG_NFS_V4_1)
568 static void nfs41_sequence_free_slot(struct nfs4_sequence_res
*res
)
570 struct nfs4_session
*session
;
571 struct nfs4_slot_table
*tbl
;
572 struct nfs4_slot
*slot
= res
->sr_slot
;
573 bool send_new_highest_used_slotid
= false;
576 session
= tbl
->session
;
578 spin_lock(&tbl
->slot_tbl_lock
);
579 /* Be nice to the server: try to ensure that the last transmitted
580 * value for highest_user_slotid <= target_highest_slotid
582 if (tbl
->highest_used_slotid
> tbl
->target_highest_slotid
)
583 send_new_highest_used_slotid
= true;
585 if (nfs41_wake_and_assign_slot(tbl
, slot
)) {
586 send_new_highest_used_slotid
= false;
589 nfs4_free_slot(tbl
, slot
);
591 if (tbl
->highest_used_slotid
!= NFS4_NO_SLOT
)
592 send_new_highest_used_slotid
= false;
594 spin_unlock(&tbl
->slot_tbl_lock
);
596 if (send_new_highest_used_slotid
)
597 nfs41_server_notify_highest_slotid_update(session
->clp
);
600 int nfs41_sequence_done(struct rpc_task
*task
, struct nfs4_sequence_res
*res
)
602 struct nfs4_session
*session
;
603 struct nfs4_slot
*slot
= res
->sr_slot
;
604 struct nfs_client
*clp
;
605 bool interrupted
= false;
610 /* don't increment the sequence number if the task wasn't sent */
611 if (!RPC_WAS_SENT(task
))
614 session
= slot
->table
->session
;
616 if (slot
->interrupted
) {
617 slot
->interrupted
= 0;
621 trace_nfs4_sequence_done(session
, res
);
622 /* Check the SEQUENCE operation status */
623 switch (res
->sr_status
) {
625 /* Update the slot's sequence and clientid lease timer */
628 do_renew_lease(clp
, res
->sr_timestamp
);
629 /* Check sequence flags */
630 if (res
->sr_status_flags
!= 0)
631 nfs4_schedule_lease_recovery(clp
);
632 nfs41_update_target_slotid(slot
->table
, slot
, res
);
636 * sr_status remains 1 if an RPC level error occurred.
637 * The server may or may not have processed the sequence
639 * Mark the slot as having hosted an interrupted RPC call.
641 slot
->interrupted
= 1;
644 /* The server detected a resend of the RPC call and
645 * returned NFS4ERR_DELAY as per Section 2.10.6.2
648 dprintk("%s: slot=%u seq=%u: Operation in progress\n",
653 case -NFS4ERR_BADSLOT
:
655 * The slot id we used was probably retired. Try again
656 * using a different slot id.
659 case -NFS4ERR_SEQ_MISORDERED
:
661 * Was the last operation on this sequence interrupted?
662 * If so, retry after bumping the sequence number.
669 * Could this slot have been previously retired?
670 * If so, then the server may be expecting seq_nr = 1!
672 if (slot
->seq_nr
!= 1) {
677 case -NFS4ERR_SEQ_FALSE_RETRY
:
681 /* Just update the slot sequence no. */
685 /* The session may be reset by one of the error handlers. */
686 dprintk("%s: Error %d free the slot \n", __func__
, res
->sr_status
);
687 nfs41_sequence_free_slot(res
);
691 if (rpc_restart_call_prepare(task
)) {
697 if (!rpc_restart_call(task
))
699 rpc_delay(task
, NFS4_POLL_RETRY_MAX
);
702 EXPORT_SYMBOL_GPL(nfs41_sequence_done
);
704 static int nfs4_sequence_done(struct rpc_task
*task
,
705 struct nfs4_sequence_res
*res
)
707 if (res
->sr_slot
== NULL
)
709 if (!res
->sr_slot
->table
->session
)
710 return nfs40_sequence_done(task
, res
);
711 return nfs41_sequence_done(task
, res
);
714 int nfs41_setup_sequence(struct nfs4_session
*session
,
715 struct nfs4_sequence_args
*args
,
716 struct nfs4_sequence_res
*res
,
717 struct rpc_task
*task
)
719 struct nfs4_slot
*slot
;
720 struct nfs4_slot_table
*tbl
;
722 dprintk("--> %s\n", __func__
);
723 /* slot already allocated? */
724 if (res
->sr_slot
!= NULL
)
727 tbl
= &session
->fc_slot_table
;
729 task
->tk_timeout
= 0;
731 spin_lock(&tbl
->slot_tbl_lock
);
732 if (test_bit(NFS4_SLOT_TBL_DRAINING
, &tbl
->slot_tbl_state
) &&
733 !args
->sa_privileged
) {
734 /* The state manager will wait until the slot table is empty */
735 dprintk("%s session is draining\n", __func__
);
739 slot
= nfs4_alloc_slot(tbl
);
741 /* If out of memory, try again in 1/4 second */
742 if (slot
== ERR_PTR(-ENOMEM
))
743 task
->tk_timeout
= HZ
>> 2;
744 dprintk("<-- %s: no free slots\n", __func__
);
747 spin_unlock(&tbl
->slot_tbl_lock
);
749 args
->sa_slot
= slot
;
751 dprintk("<-- %s slotid=%u seqid=%u\n", __func__
,
752 slot
->slot_nr
, slot
->seq_nr
);
755 res
->sr_timestamp
= jiffies
;
756 res
->sr_status_flags
= 0;
758 * sr_status is only set in decode_sequence, and so will remain
759 * set to 1 if an rpc level failure occurs.
762 trace_nfs4_setup_sequence(session
, args
);
764 rpc_call_start(task
);
767 /* Privileged tasks are queued with top priority */
768 if (args
->sa_privileged
)
769 rpc_sleep_on_priority(&tbl
->slot_tbl_waitq
, task
,
770 NULL
, RPC_PRIORITY_PRIVILEGED
);
772 rpc_sleep_on(&tbl
->slot_tbl_waitq
, task
, NULL
);
773 spin_unlock(&tbl
->slot_tbl_lock
);
776 EXPORT_SYMBOL_GPL(nfs41_setup_sequence
);
778 static int nfs4_setup_sequence(const struct nfs_server
*server
,
779 struct nfs4_sequence_args
*args
,
780 struct nfs4_sequence_res
*res
,
781 struct rpc_task
*task
)
783 struct nfs4_session
*session
= nfs4_get_session(server
);
787 return nfs40_setup_sequence(server
, args
, res
, task
);
789 dprintk("--> %s clp %p session %p sr_slot %u\n",
790 __func__
, session
->clp
, session
, res
->sr_slot
?
791 res
->sr_slot
->slot_nr
: NFS4_NO_SLOT
);
793 ret
= nfs41_setup_sequence(session
, args
, res
, task
);
795 dprintk("<-- %s status=%d\n", __func__
, ret
);
799 static void nfs41_call_sync_prepare(struct rpc_task
*task
, void *calldata
)
801 struct nfs4_call_sync_data
*data
= calldata
;
802 struct nfs4_session
*session
= nfs4_get_session(data
->seq_server
);
804 dprintk("--> %s data->seq_server %p\n", __func__
, data
->seq_server
);
806 nfs41_setup_sequence(session
, data
->seq_args
, data
->seq_res
, task
);
809 static void nfs41_call_sync_done(struct rpc_task
*task
, void *calldata
)
811 struct nfs4_call_sync_data
*data
= calldata
;
813 nfs41_sequence_done(task
, data
->seq_res
);
816 static const struct rpc_call_ops nfs41_call_sync_ops
= {
817 .rpc_call_prepare
= nfs41_call_sync_prepare
,
818 .rpc_call_done
= nfs41_call_sync_done
,
821 #else /* !CONFIG_NFS_V4_1 */
823 static int nfs4_setup_sequence(const struct nfs_server
*server
,
824 struct nfs4_sequence_args
*args
,
825 struct nfs4_sequence_res
*res
,
826 struct rpc_task
*task
)
828 return nfs40_setup_sequence(server
, args
, res
, task
);
831 static int nfs4_sequence_done(struct rpc_task
*task
,
832 struct nfs4_sequence_res
*res
)
834 return nfs40_sequence_done(task
, res
);
837 #endif /* !CONFIG_NFS_V4_1 */
839 static void nfs40_call_sync_prepare(struct rpc_task
*task
, void *calldata
)
841 struct nfs4_call_sync_data
*data
= calldata
;
842 nfs4_setup_sequence(data
->seq_server
,
843 data
->seq_args
, data
->seq_res
, task
);
846 static void nfs40_call_sync_done(struct rpc_task
*task
, void *calldata
)
848 struct nfs4_call_sync_data
*data
= calldata
;
849 nfs4_sequence_done(task
, data
->seq_res
);
852 static const struct rpc_call_ops nfs40_call_sync_ops
= {
853 .rpc_call_prepare
= nfs40_call_sync_prepare
,
854 .rpc_call_done
= nfs40_call_sync_done
,
857 static int nfs4_call_sync_sequence(struct rpc_clnt
*clnt
,
858 struct nfs_server
*server
,
859 struct rpc_message
*msg
,
860 struct nfs4_sequence_args
*args
,
861 struct nfs4_sequence_res
*res
)
864 struct rpc_task
*task
;
865 struct nfs_client
*clp
= server
->nfs_client
;
866 struct nfs4_call_sync_data data
= {
867 .seq_server
= server
,
871 struct rpc_task_setup task_setup
= {
874 .callback_ops
= clp
->cl_mvops
->call_sync_ops
,
875 .callback_data
= &data
878 task
= rpc_run_task(&task_setup
);
882 ret
= task
->tk_status
;
888 int nfs4_call_sync(struct rpc_clnt
*clnt
,
889 struct nfs_server
*server
,
890 struct rpc_message
*msg
,
891 struct nfs4_sequence_args
*args
,
892 struct nfs4_sequence_res
*res
,
895 nfs4_init_sequence(args
, res
, cache_reply
);
896 return nfs4_call_sync_sequence(clnt
, server
, msg
, args
, res
);
899 static void update_changeattr(struct inode
*dir
, struct nfs4_change_info
*cinfo
)
901 struct nfs_inode
*nfsi
= NFS_I(dir
);
903 spin_lock(&dir
->i_lock
);
904 nfsi
->cache_validity
|= NFS_INO_INVALID_ATTR
|NFS_INO_INVALID_DATA
;
905 if (!cinfo
->atomic
|| cinfo
->before
!= dir
->i_version
)
906 nfs_force_lookup_revalidate(dir
);
907 dir
->i_version
= cinfo
->after
;
908 nfs_fscache_invalidate(dir
);
909 spin_unlock(&dir
->i_lock
);
912 struct nfs4_opendata
{
914 struct nfs_openargs o_arg
;
915 struct nfs_openres o_res
;
916 struct nfs_open_confirmargs c_arg
;
917 struct nfs_open_confirmres c_res
;
918 struct nfs4_string owner_name
;
919 struct nfs4_string group_name
;
920 struct nfs_fattr f_attr
;
921 struct nfs4_label
*f_label
;
923 struct dentry
*dentry
;
924 struct nfs4_state_owner
*owner
;
925 struct nfs4_state
*state
;
927 unsigned long timestamp
;
928 unsigned int rpc_done
: 1;
929 unsigned int file_created
: 1;
930 unsigned int is_recover
: 1;
935 static bool nfs4_clear_cap_atomic_open_v1(struct nfs_server
*server
,
936 int err
, struct nfs4_exception
*exception
)
940 if (!(server
->caps
& NFS_CAP_ATOMIC_OPEN_V1
))
942 server
->caps
&= ~NFS_CAP_ATOMIC_OPEN_V1
;
943 exception
->retry
= 1;
947 static enum open_claim_type4
948 nfs4_map_atomic_open_claim(struct nfs_server
*server
,
949 enum open_claim_type4 claim
)
951 if (server
->caps
& NFS_CAP_ATOMIC_OPEN_V1
)
956 case NFS4_OPEN_CLAIM_FH
:
957 return NFS4_OPEN_CLAIM_NULL
;
958 case NFS4_OPEN_CLAIM_DELEG_CUR_FH
:
959 return NFS4_OPEN_CLAIM_DELEGATE_CUR
;
960 case NFS4_OPEN_CLAIM_DELEG_PREV_FH
:
961 return NFS4_OPEN_CLAIM_DELEGATE_PREV
;
965 static void nfs4_init_opendata_res(struct nfs4_opendata
*p
)
967 p
->o_res
.f_attr
= &p
->f_attr
;
968 p
->o_res
.f_label
= p
->f_label
;
969 p
->o_res
.seqid
= p
->o_arg
.seqid
;
970 p
->c_res
.seqid
= p
->c_arg
.seqid
;
971 p
->o_res
.server
= p
->o_arg
.server
;
972 p
->o_res
.access_request
= p
->o_arg
.access
;
973 nfs_fattr_init(&p
->f_attr
);
974 nfs_fattr_init_names(&p
->f_attr
, &p
->owner_name
, &p
->group_name
);
977 static struct nfs4_opendata
*nfs4_opendata_alloc(struct dentry
*dentry
,
978 struct nfs4_state_owner
*sp
, fmode_t fmode
, int flags
,
979 const struct iattr
*attrs
,
980 struct nfs4_label
*label
,
981 enum open_claim_type4 claim
,
984 struct dentry
*parent
= dget_parent(dentry
);
985 struct inode
*dir
= parent
->d_inode
;
986 struct nfs_server
*server
= NFS_SERVER(dir
);
987 struct nfs4_opendata
*p
;
989 p
= kzalloc(sizeof(*p
), gfp_mask
);
993 p
->f_label
= nfs4_label_alloc(server
, gfp_mask
);
994 if (IS_ERR(p
->f_label
))
997 p
->o_arg
.seqid
= nfs_alloc_seqid(&sp
->so_seqid
, gfp_mask
);
998 if (p
->o_arg
.seqid
== NULL
)
1000 nfs_sb_active(dentry
->d_sb
);
1001 p
->dentry
= dget(dentry
);
1004 atomic_inc(&sp
->so_count
);
1005 p
->o_arg
.open_flags
= flags
;
1006 p
->o_arg
.fmode
= fmode
& (FMODE_READ
|FMODE_WRITE
);
1007 /* don't put an ACCESS op in OPEN compound if O_EXCL, because ACCESS
1008 * will return permission denied for all bits until close */
1009 if (!(flags
& O_EXCL
)) {
1010 /* ask server to check for all possible rights as results
1012 p
->o_arg
.access
= NFS4_ACCESS_READ
| NFS4_ACCESS_MODIFY
|
1013 NFS4_ACCESS_EXTEND
| NFS4_ACCESS_EXECUTE
;
1015 p
->o_arg
.clientid
= server
->nfs_client
->cl_clientid
;
1016 p
->o_arg
.id
.create_time
= ktime_to_ns(sp
->so_seqid
.create_time
);
1017 p
->o_arg
.id
.uniquifier
= sp
->so_seqid
.owner_id
;
1018 p
->o_arg
.name
= &dentry
->d_name
;
1019 p
->o_arg
.server
= server
;
1020 p
->o_arg
.bitmask
= nfs4_bitmask(server
, label
);
1021 p
->o_arg
.open_bitmap
= &nfs4_fattr_bitmap
[0];
1022 p
->o_arg
.label
= label
;
1023 p
->o_arg
.claim
= nfs4_map_atomic_open_claim(server
, claim
);
1024 switch (p
->o_arg
.claim
) {
1025 case NFS4_OPEN_CLAIM_NULL
:
1026 case NFS4_OPEN_CLAIM_DELEGATE_CUR
:
1027 case NFS4_OPEN_CLAIM_DELEGATE_PREV
:
1028 p
->o_arg
.fh
= NFS_FH(dir
);
1030 case NFS4_OPEN_CLAIM_PREVIOUS
:
1031 case NFS4_OPEN_CLAIM_FH
:
1032 case NFS4_OPEN_CLAIM_DELEG_CUR_FH
:
1033 case NFS4_OPEN_CLAIM_DELEG_PREV_FH
:
1034 p
->o_arg
.fh
= NFS_FH(dentry
->d_inode
);
1036 if (attrs
!= NULL
&& attrs
->ia_valid
!= 0) {
1039 p
->o_arg
.u
.attrs
= &p
->attrs
;
1040 memcpy(&p
->attrs
, attrs
, sizeof(p
->attrs
));
1043 verf
[1] = current
->pid
;
1044 memcpy(p
->o_arg
.u
.verifier
.data
, verf
,
1045 sizeof(p
->o_arg
.u
.verifier
.data
));
1047 p
->c_arg
.fh
= &p
->o_res
.fh
;
1048 p
->c_arg
.stateid
= &p
->o_res
.stateid
;
1049 p
->c_arg
.seqid
= p
->o_arg
.seqid
;
1050 nfs4_init_opendata_res(p
);
1051 kref_init(&p
->kref
);
1055 nfs4_label_free(p
->f_label
);
1063 static void nfs4_opendata_free(struct kref
*kref
)
1065 struct nfs4_opendata
*p
= container_of(kref
,
1066 struct nfs4_opendata
, kref
);
1067 struct super_block
*sb
= p
->dentry
->d_sb
;
1069 nfs_free_seqid(p
->o_arg
.seqid
);
1070 if (p
->state
!= NULL
)
1071 nfs4_put_open_state(p
->state
);
1072 nfs4_put_state_owner(p
->owner
);
1074 nfs4_label_free(p
->f_label
);
1078 nfs_sb_deactive(sb
);
1079 nfs_fattr_free_names(&p
->f_attr
);
1080 kfree(p
->f_attr
.mdsthreshold
);
1084 static void nfs4_opendata_put(struct nfs4_opendata
*p
)
1087 kref_put(&p
->kref
, nfs4_opendata_free
);
1090 static int nfs4_wait_for_completion_rpc_task(struct rpc_task
*task
)
1094 ret
= rpc_wait_for_completion_task(task
);
1098 static int can_open_cached(struct nfs4_state
*state
, fmode_t mode
, int open_mode
)
1102 if (open_mode
& (O_EXCL
|O_TRUNC
))
1104 switch (mode
& (FMODE_READ
|FMODE_WRITE
)) {
1106 ret
|= test_bit(NFS_O_RDONLY_STATE
, &state
->flags
) != 0
1107 && state
->n_rdonly
!= 0;
1110 ret
|= test_bit(NFS_O_WRONLY_STATE
, &state
->flags
) != 0
1111 && state
->n_wronly
!= 0;
1113 case FMODE_READ
|FMODE_WRITE
:
1114 ret
|= test_bit(NFS_O_RDWR_STATE
, &state
->flags
) != 0
1115 && state
->n_rdwr
!= 0;
1121 static int can_open_delegated(struct nfs_delegation
*delegation
, fmode_t fmode
)
1123 if (delegation
== NULL
)
1125 if ((delegation
->type
& fmode
) != fmode
)
1127 if (test_bit(NFS_DELEGATION_NEED_RECLAIM
, &delegation
->flags
))
1129 if (test_bit(NFS_DELEGATION_RETURNING
, &delegation
->flags
))
1131 nfs_mark_delegation_referenced(delegation
);
1135 static void update_open_stateflags(struct nfs4_state
*state
, fmode_t fmode
)
1144 case FMODE_READ
|FMODE_WRITE
:
1147 nfs4_state_set_mode_locked(state
, state
->state
| fmode
);
1150 static void nfs_test_and_clear_all_open_stateid(struct nfs4_state
*state
)
1152 struct nfs_client
*clp
= state
->owner
->so_server
->nfs_client
;
1153 bool need_recover
= false;
1155 if (test_and_clear_bit(NFS_O_RDONLY_STATE
, &state
->flags
) && state
->n_rdonly
)
1156 need_recover
= true;
1157 if (test_and_clear_bit(NFS_O_WRONLY_STATE
, &state
->flags
) && state
->n_wronly
)
1158 need_recover
= true;
1159 if (test_and_clear_bit(NFS_O_RDWR_STATE
, &state
->flags
) && state
->n_rdwr
)
1160 need_recover
= true;
1162 nfs4_state_mark_reclaim_nograce(clp
, state
);
1165 static bool nfs_need_update_open_stateid(struct nfs4_state
*state
,
1166 nfs4_stateid
*stateid
)
1168 if (test_and_set_bit(NFS_OPEN_STATE
, &state
->flags
) == 0)
1170 if (!nfs4_stateid_match_other(stateid
, &state
->open_stateid
)) {
1171 nfs_test_and_clear_all_open_stateid(state
);
1174 if (nfs4_stateid_is_newer(stateid
, &state
->open_stateid
))
1179 static void nfs_clear_open_stateid_locked(struct nfs4_state
*state
,
1180 nfs4_stateid
*stateid
, fmode_t fmode
)
1182 clear_bit(NFS_O_RDWR_STATE
, &state
->flags
);
1183 switch (fmode
& (FMODE_READ
|FMODE_WRITE
)) {
1185 clear_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
1188 clear_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
1191 clear_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
1192 clear_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
1193 clear_bit(NFS_OPEN_STATE
, &state
->flags
);
1195 if (stateid
== NULL
)
1197 if (!nfs_need_update_open_stateid(state
, stateid
))
1199 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) == 0)
1200 nfs4_stateid_copy(&state
->stateid
, stateid
);
1201 nfs4_stateid_copy(&state
->open_stateid
, stateid
);
1204 static void nfs_clear_open_stateid(struct nfs4_state
*state
, nfs4_stateid
*stateid
, fmode_t fmode
)
1206 write_seqlock(&state
->seqlock
);
1207 nfs_clear_open_stateid_locked(state
, stateid
, fmode
);
1208 write_sequnlock(&state
->seqlock
);
1209 if (test_bit(NFS_STATE_RECLAIM_NOGRACE
, &state
->flags
))
1210 nfs4_schedule_state_manager(state
->owner
->so_server
->nfs_client
);
1213 static void nfs_set_open_stateid_locked(struct nfs4_state
*state
, nfs4_stateid
*stateid
, fmode_t fmode
)
1217 set_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
1220 set_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
1222 case FMODE_READ
|FMODE_WRITE
:
1223 set_bit(NFS_O_RDWR_STATE
, &state
->flags
);
1225 if (!nfs_need_update_open_stateid(state
, stateid
))
1227 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) == 0)
1228 nfs4_stateid_copy(&state
->stateid
, stateid
);
1229 nfs4_stateid_copy(&state
->open_stateid
, stateid
);
1232 static void __update_open_stateid(struct nfs4_state
*state
, nfs4_stateid
*open_stateid
, const nfs4_stateid
*deleg_stateid
, fmode_t fmode
)
1235 * Protect the call to nfs4_state_set_mode_locked and
1236 * serialise the stateid update
1238 write_seqlock(&state
->seqlock
);
1239 if (deleg_stateid
!= NULL
) {
1240 nfs4_stateid_copy(&state
->stateid
, deleg_stateid
);
1241 set_bit(NFS_DELEGATED_STATE
, &state
->flags
);
1243 if (open_stateid
!= NULL
)
1244 nfs_set_open_stateid_locked(state
, open_stateid
, fmode
);
1245 write_sequnlock(&state
->seqlock
);
1246 spin_lock(&state
->owner
->so_lock
);
1247 update_open_stateflags(state
, fmode
);
1248 spin_unlock(&state
->owner
->so_lock
);
1251 static int update_open_stateid(struct nfs4_state
*state
, nfs4_stateid
*open_stateid
, nfs4_stateid
*delegation
, fmode_t fmode
)
1253 struct nfs_inode
*nfsi
= NFS_I(state
->inode
);
1254 struct nfs_delegation
*deleg_cur
;
1257 fmode
&= (FMODE_READ
|FMODE_WRITE
);
1260 deleg_cur
= rcu_dereference(nfsi
->delegation
);
1261 if (deleg_cur
== NULL
)
1264 spin_lock(&deleg_cur
->lock
);
1265 if (rcu_dereference(nfsi
->delegation
) != deleg_cur
||
1266 test_bit(NFS_DELEGATION_RETURNING
, &deleg_cur
->flags
) ||
1267 (deleg_cur
->type
& fmode
) != fmode
)
1268 goto no_delegation_unlock
;
1270 if (delegation
== NULL
)
1271 delegation
= &deleg_cur
->stateid
;
1272 else if (!nfs4_stateid_match(&deleg_cur
->stateid
, delegation
))
1273 goto no_delegation_unlock
;
1275 nfs_mark_delegation_referenced(deleg_cur
);
1276 __update_open_stateid(state
, open_stateid
, &deleg_cur
->stateid
, fmode
);
1278 no_delegation_unlock
:
1279 spin_unlock(&deleg_cur
->lock
);
1283 if (!ret
&& open_stateid
!= NULL
) {
1284 __update_open_stateid(state
, open_stateid
, NULL
, fmode
);
1287 if (test_bit(NFS_STATE_RECLAIM_NOGRACE
, &state
->flags
))
1288 nfs4_schedule_state_manager(state
->owner
->so_server
->nfs_client
);
1294 static void nfs4_return_incompatible_delegation(struct inode
*inode
, fmode_t fmode
)
1296 struct nfs_delegation
*delegation
;
1299 delegation
= rcu_dereference(NFS_I(inode
)->delegation
);
1300 if (delegation
== NULL
|| (delegation
->type
& fmode
) == fmode
) {
1305 nfs4_inode_return_delegation(inode
);
1308 static struct nfs4_state
*nfs4_try_open_cached(struct nfs4_opendata
*opendata
)
1310 struct nfs4_state
*state
= opendata
->state
;
1311 struct nfs_inode
*nfsi
= NFS_I(state
->inode
);
1312 struct nfs_delegation
*delegation
;
1313 int open_mode
= opendata
->o_arg
.open_flags
;
1314 fmode_t fmode
= opendata
->o_arg
.fmode
;
1315 nfs4_stateid stateid
;
1319 spin_lock(&state
->owner
->so_lock
);
1320 if (can_open_cached(state
, fmode
, open_mode
)) {
1321 update_open_stateflags(state
, fmode
);
1322 spin_unlock(&state
->owner
->so_lock
);
1323 goto out_return_state
;
1325 spin_unlock(&state
->owner
->so_lock
);
1327 delegation
= rcu_dereference(nfsi
->delegation
);
1328 if (!can_open_delegated(delegation
, fmode
)) {
1332 /* Save the delegation */
1333 nfs4_stateid_copy(&stateid
, &delegation
->stateid
);
1335 nfs_release_seqid(opendata
->o_arg
.seqid
);
1336 if (!opendata
->is_recover
) {
1337 ret
= nfs_may_open(state
->inode
, state
->owner
->so_cred
, open_mode
);
1343 /* Try to update the stateid using the delegation */
1344 if (update_open_stateid(state
, NULL
, &stateid
, fmode
))
1345 goto out_return_state
;
1348 return ERR_PTR(ret
);
1350 atomic_inc(&state
->count
);
1355 nfs4_opendata_check_deleg(struct nfs4_opendata
*data
, struct nfs4_state
*state
)
1357 struct nfs_client
*clp
= NFS_SERVER(state
->inode
)->nfs_client
;
1358 struct nfs_delegation
*delegation
;
1359 int delegation_flags
= 0;
1362 delegation
= rcu_dereference(NFS_I(state
->inode
)->delegation
);
1364 delegation_flags
= delegation
->flags
;
1366 if (data
->o_arg
.claim
== NFS4_OPEN_CLAIM_DELEGATE_CUR
) {
1367 pr_err_ratelimited("NFS: Broken NFSv4 server %s is "
1368 "returning a delegation for "
1369 "OPEN(CLAIM_DELEGATE_CUR)\n",
1371 } else if ((delegation_flags
& 1UL<<NFS_DELEGATION_NEED_RECLAIM
) == 0)
1372 nfs_inode_set_delegation(state
->inode
,
1373 data
->owner
->so_cred
,
1376 nfs_inode_reclaim_delegation(state
->inode
,
1377 data
->owner
->so_cred
,
1382 * Check the inode attributes against the CLAIM_PREVIOUS returned attributes
1383 * and update the nfs4_state.
1385 static struct nfs4_state
*
1386 _nfs4_opendata_reclaim_to_nfs4_state(struct nfs4_opendata
*data
)
1388 struct inode
*inode
= data
->state
->inode
;
1389 struct nfs4_state
*state
= data
->state
;
1392 if (!data
->rpc_done
) {
1393 if (data
->rpc_status
) {
1394 ret
= data
->rpc_status
;
1397 /* cached opens have already been processed */
1401 ret
= nfs_refresh_inode(inode
, &data
->f_attr
);
1405 if (data
->o_res
.delegation_type
!= 0)
1406 nfs4_opendata_check_deleg(data
, state
);
1408 update_open_stateid(state
, &data
->o_res
.stateid
, NULL
,
1410 atomic_inc(&state
->count
);
1414 return ERR_PTR(ret
);
1418 static struct nfs4_state
*
1419 _nfs4_opendata_to_nfs4_state(struct nfs4_opendata
*data
)
1421 struct inode
*inode
;
1422 struct nfs4_state
*state
= NULL
;
1425 if (!data
->rpc_done
) {
1426 state
= nfs4_try_open_cached(data
);
1431 if (!(data
->f_attr
.valid
& NFS_ATTR_FATTR
))
1433 inode
= nfs_fhget(data
->dir
->d_sb
, &data
->o_res
.fh
, &data
->f_attr
, data
->f_label
);
1434 ret
= PTR_ERR(inode
);
1438 state
= nfs4_get_open_state(inode
, data
->owner
);
1441 if (data
->o_res
.delegation_type
!= 0)
1442 nfs4_opendata_check_deleg(data
, state
);
1443 update_open_stateid(state
, &data
->o_res
.stateid
, NULL
,
1447 nfs_release_seqid(data
->o_arg
.seqid
);
1452 return ERR_PTR(ret
);
1455 static struct nfs4_state
*
1456 nfs4_opendata_to_nfs4_state(struct nfs4_opendata
*data
)
1458 if (data
->o_arg
.claim
== NFS4_OPEN_CLAIM_PREVIOUS
)
1459 return _nfs4_opendata_reclaim_to_nfs4_state(data
);
1460 return _nfs4_opendata_to_nfs4_state(data
);
1463 static struct nfs_open_context
*nfs4_state_find_open_context(struct nfs4_state
*state
)
1465 struct nfs_inode
*nfsi
= NFS_I(state
->inode
);
1466 struct nfs_open_context
*ctx
;
1468 spin_lock(&state
->inode
->i_lock
);
1469 list_for_each_entry(ctx
, &nfsi
->open_files
, list
) {
1470 if (ctx
->state
!= state
)
1472 get_nfs_open_context(ctx
);
1473 spin_unlock(&state
->inode
->i_lock
);
1476 spin_unlock(&state
->inode
->i_lock
);
1477 return ERR_PTR(-ENOENT
);
1480 static struct nfs4_opendata
*nfs4_open_recoverdata_alloc(struct nfs_open_context
*ctx
,
1481 struct nfs4_state
*state
, enum open_claim_type4 claim
)
1483 struct nfs4_opendata
*opendata
;
1485 opendata
= nfs4_opendata_alloc(ctx
->dentry
, state
->owner
, 0, 0,
1486 NULL
, NULL
, claim
, GFP_NOFS
);
1487 if (opendata
== NULL
)
1488 return ERR_PTR(-ENOMEM
);
1489 opendata
->state
= state
;
1490 atomic_inc(&state
->count
);
1494 static int nfs4_open_recover_helper(struct nfs4_opendata
*opendata
, fmode_t fmode
, struct nfs4_state
**res
)
1496 struct nfs4_state
*newstate
;
1499 opendata
->o_arg
.open_flags
= 0;
1500 opendata
->o_arg
.fmode
= fmode
;
1501 memset(&opendata
->o_res
, 0, sizeof(opendata
->o_res
));
1502 memset(&opendata
->c_res
, 0, sizeof(opendata
->c_res
));
1503 nfs4_init_opendata_res(opendata
);
1504 ret
= _nfs4_recover_proc_open(opendata
);
1507 newstate
= nfs4_opendata_to_nfs4_state(opendata
);
1508 if (IS_ERR(newstate
))
1509 return PTR_ERR(newstate
);
1510 nfs4_close_state(newstate
, fmode
);
1515 static int nfs4_open_recover(struct nfs4_opendata
*opendata
, struct nfs4_state
*state
)
1517 struct nfs4_state
*newstate
;
1520 /* Don't trigger recovery in nfs_test_and_clear_all_open_stateid */
1521 clear_bit(NFS_O_RDWR_STATE
, &state
->flags
);
1522 clear_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
1523 clear_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
1524 /* memory barrier prior to reading state->n_* */
1525 clear_bit(NFS_DELEGATED_STATE
, &state
->flags
);
1526 clear_bit(NFS_OPEN_STATE
, &state
->flags
);
1528 if (state
->n_rdwr
!= 0) {
1529 ret
= nfs4_open_recover_helper(opendata
, FMODE_READ
|FMODE_WRITE
, &newstate
);
1532 if (newstate
!= state
)
1535 if (state
->n_wronly
!= 0) {
1536 ret
= nfs4_open_recover_helper(opendata
, FMODE_WRITE
, &newstate
);
1539 if (newstate
!= state
)
1542 if (state
->n_rdonly
!= 0) {
1543 ret
= nfs4_open_recover_helper(opendata
, FMODE_READ
, &newstate
);
1546 if (newstate
!= state
)
1550 * We may have performed cached opens for all three recoveries.
1551 * Check if we need to update the current stateid.
1553 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) == 0 &&
1554 !nfs4_stateid_match(&state
->stateid
, &state
->open_stateid
)) {
1555 write_seqlock(&state
->seqlock
);
1556 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) == 0)
1557 nfs4_stateid_copy(&state
->stateid
, &state
->open_stateid
);
1558 write_sequnlock(&state
->seqlock
);
1565 * reclaim state on the server after a reboot.
1567 static int _nfs4_do_open_reclaim(struct nfs_open_context
*ctx
, struct nfs4_state
*state
)
1569 struct nfs_delegation
*delegation
;
1570 struct nfs4_opendata
*opendata
;
1571 fmode_t delegation_type
= 0;
1574 opendata
= nfs4_open_recoverdata_alloc(ctx
, state
,
1575 NFS4_OPEN_CLAIM_PREVIOUS
);
1576 if (IS_ERR(opendata
))
1577 return PTR_ERR(opendata
);
1579 delegation
= rcu_dereference(NFS_I(state
->inode
)->delegation
);
1580 if (delegation
!= NULL
&& test_bit(NFS_DELEGATION_NEED_RECLAIM
, &delegation
->flags
) != 0)
1581 delegation_type
= delegation
->type
;
1583 opendata
->o_arg
.u
.delegation_type
= delegation_type
;
1584 status
= nfs4_open_recover(opendata
, state
);
1585 nfs4_opendata_put(opendata
);
1589 static int nfs4_do_open_reclaim(struct nfs_open_context
*ctx
, struct nfs4_state
*state
)
1591 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
1592 struct nfs4_exception exception
= { };
1595 err
= _nfs4_do_open_reclaim(ctx
, state
);
1596 trace_nfs4_open_reclaim(ctx
, 0, err
);
1597 if (nfs4_clear_cap_atomic_open_v1(server
, err
, &exception
))
1599 if (err
!= -NFS4ERR_DELAY
)
1601 nfs4_handle_exception(server
, err
, &exception
);
1602 } while (exception
.retry
);
1606 static int nfs4_open_reclaim(struct nfs4_state_owner
*sp
, struct nfs4_state
*state
)
1608 struct nfs_open_context
*ctx
;
1611 ctx
= nfs4_state_find_open_context(state
);
1614 ret
= nfs4_do_open_reclaim(ctx
, state
);
1615 put_nfs_open_context(ctx
);
1619 static int nfs4_handle_delegation_recall_error(struct nfs_server
*server
, struct nfs4_state
*state
, const nfs4_stateid
*stateid
, int err
)
1623 printk(KERN_ERR
"NFS: %s: unhandled error "
1624 "%d.\n", __func__
, err
);
1629 case -NFS4ERR_BADSESSION
:
1630 case -NFS4ERR_BADSLOT
:
1631 case -NFS4ERR_BAD_HIGH_SLOT
:
1632 case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION
:
1633 case -NFS4ERR_DEADSESSION
:
1634 set_bit(NFS_DELEGATED_STATE
, &state
->flags
);
1635 nfs4_schedule_session_recovery(server
->nfs_client
->cl_session
, err
);
1637 case -NFS4ERR_STALE_CLIENTID
:
1638 case -NFS4ERR_STALE_STATEID
:
1639 set_bit(NFS_DELEGATED_STATE
, &state
->flags
);
1640 case -NFS4ERR_EXPIRED
:
1641 /* Don't recall a delegation if it was lost */
1642 nfs4_schedule_lease_recovery(server
->nfs_client
);
1644 case -NFS4ERR_MOVED
:
1645 nfs4_schedule_migration_recovery(server
);
1647 case -NFS4ERR_LEASE_MOVED
:
1648 nfs4_schedule_lease_moved_recovery(server
->nfs_client
);
1650 case -NFS4ERR_DELEG_REVOKED
:
1651 case -NFS4ERR_ADMIN_REVOKED
:
1652 case -NFS4ERR_BAD_STATEID
:
1653 case -NFS4ERR_OPENMODE
:
1654 nfs_inode_find_state_and_recover(state
->inode
,
1656 nfs4_schedule_stateid_recovery(server
, state
);
1658 case -NFS4ERR_DELAY
:
1659 case -NFS4ERR_GRACE
:
1660 set_bit(NFS_DELEGATED_STATE
, &state
->flags
);
1664 case -NFS4ERR_DENIED
:
1665 /* kill_proc(fl->fl_pid, SIGLOST, 1); */
1671 int nfs4_open_delegation_recall(struct nfs_open_context
*ctx
, struct nfs4_state
*state
, const nfs4_stateid
*stateid
)
1673 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
1674 struct nfs4_opendata
*opendata
;
1677 opendata
= nfs4_open_recoverdata_alloc(ctx
, state
,
1678 NFS4_OPEN_CLAIM_DELEG_CUR_FH
);
1679 if (IS_ERR(opendata
))
1680 return PTR_ERR(opendata
);
1681 nfs4_stateid_copy(&opendata
->o_arg
.u
.delegation
, stateid
);
1682 err
= nfs4_open_recover(opendata
, state
);
1683 nfs4_opendata_put(opendata
);
1684 return nfs4_handle_delegation_recall_error(server
, state
, stateid
, err
);
1687 static void nfs4_open_confirm_prepare(struct rpc_task
*task
, void *calldata
)
1689 struct nfs4_opendata
*data
= calldata
;
1691 nfs40_setup_sequence(data
->o_arg
.server
, &data
->c_arg
.seq_args
,
1692 &data
->c_res
.seq_res
, task
);
1695 static void nfs4_open_confirm_done(struct rpc_task
*task
, void *calldata
)
1697 struct nfs4_opendata
*data
= calldata
;
1699 nfs40_sequence_done(task
, &data
->c_res
.seq_res
);
1701 data
->rpc_status
= task
->tk_status
;
1702 if (data
->rpc_status
== 0) {
1703 nfs4_stateid_copy(&data
->o_res
.stateid
, &data
->c_res
.stateid
);
1704 nfs_confirm_seqid(&data
->owner
->so_seqid
, 0);
1705 renew_lease(data
->o_res
.server
, data
->timestamp
);
1710 static void nfs4_open_confirm_release(void *calldata
)
1712 struct nfs4_opendata
*data
= calldata
;
1713 struct nfs4_state
*state
= NULL
;
1715 /* If this request hasn't been cancelled, do nothing */
1716 if (data
->cancelled
== 0)
1718 /* In case of error, no cleanup! */
1719 if (!data
->rpc_done
)
1721 state
= nfs4_opendata_to_nfs4_state(data
);
1723 nfs4_close_state(state
, data
->o_arg
.fmode
);
1725 nfs4_opendata_put(data
);
1728 static const struct rpc_call_ops nfs4_open_confirm_ops
= {
1729 .rpc_call_prepare
= nfs4_open_confirm_prepare
,
1730 .rpc_call_done
= nfs4_open_confirm_done
,
1731 .rpc_release
= nfs4_open_confirm_release
,
1735 * Note: On error, nfs4_proc_open_confirm will free the struct nfs4_opendata
1737 static int _nfs4_proc_open_confirm(struct nfs4_opendata
*data
)
1739 struct nfs_server
*server
= NFS_SERVER(data
->dir
->d_inode
);
1740 struct rpc_task
*task
;
1741 struct rpc_message msg
= {
1742 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_OPEN_CONFIRM
],
1743 .rpc_argp
= &data
->c_arg
,
1744 .rpc_resp
= &data
->c_res
,
1745 .rpc_cred
= data
->owner
->so_cred
,
1747 struct rpc_task_setup task_setup_data
= {
1748 .rpc_client
= server
->client
,
1749 .rpc_message
= &msg
,
1750 .callback_ops
= &nfs4_open_confirm_ops
,
1751 .callback_data
= data
,
1752 .workqueue
= nfsiod_workqueue
,
1753 .flags
= RPC_TASK_ASYNC
,
1757 nfs4_init_sequence(&data
->c_arg
.seq_args
, &data
->c_res
.seq_res
, 1);
1758 kref_get(&data
->kref
);
1760 data
->rpc_status
= 0;
1761 data
->timestamp
= jiffies
;
1762 task
= rpc_run_task(&task_setup_data
);
1764 return PTR_ERR(task
);
1765 status
= nfs4_wait_for_completion_rpc_task(task
);
1767 data
->cancelled
= 1;
1770 status
= data
->rpc_status
;
1775 static void nfs4_open_prepare(struct rpc_task
*task
, void *calldata
)
1777 struct nfs4_opendata
*data
= calldata
;
1778 struct nfs4_state_owner
*sp
= data
->owner
;
1779 struct nfs_client
*clp
= sp
->so_server
->nfs_client
;
1781 if (nfs_wait_on_sequence(data
->o_arg
.seqid
, task
) != 0)
1784 * Check if we still need to send an OPEN call, or if we can use
1785 * a delegation instead.
1787 if (data
->state
!= NULL
) {
1788 struct nfs_delegation
*delegation
;
1790 if (can_open_cached(data
->state
, data
->o_arg
.fmode
, data
->o_arg
.open_flags
))
1793 delegation
= rcu_dereference(NFS_I(data
->state
->inode
)->delegation
);
1794 if (data
->o_arg
.claim
!= NFS4_OPEN_CLAIM_DELEGATE_CUR
&&
1795 data
->o_arg
.claim
!= NFS4_OPEN_CLAIM_DELEG_CUR_FH
&&
1796 can_open_delegated(delegation
, data
->o_arg
.fmode
))
1797 goto unlock_no_action
;
1800 /* Update client id. */
1801 data
->o_arg
.clientid
= clp
->cl_clientid
;
1802 switch (data
->o_arg
.claim
) {
1803 case NFS4_OPEN_CLAIM_PREVIOUS
:
1804 case NFS4_OPEN_CLAIM_DELEG_CUR_FH
:
1805 case NFS4_OPEN_CLAIM_DELEG_PREV_FH
:
1806 data
->o_arg
.open_bitmap
= &nfs4_open_noattr_bitmap
[0];
1807 case NFS4_OPEN_CLAIM_FH
:
1808 task
->tk_msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_OPEN_NOATTR
];
1809 nfs_copy_fh(&data
->o_res
.fh
, data
->o_arg
.fh
);
1811 data
->timestamp
= jiffies
;
1812 if (nfs4_setup_sequence(data
->o_arg
.server
,
1813 &data
->o_arg
.seq_args
,
1814 &data
->o_res
.seq_res
,
1816 nfs_release_seqid(data
->o_arg
.seqid
);
1818 /* Set the create mode (note dependency on the session type) */
1819 data
->o_arg
.createmode
= NFS4_CREATE_UNCHECKED
;
1820 if (data
->o_arg
.open_flags
& O_EXCL
) {
1821 data
->o_arg
.createmode
= NFS4_CREATE_EXCLUSIVE
;
1822 if (nfs4_has_persistent_session(clp
))
1823 data
->o_arg
.createmode
= NFS4_CREATE_GUARDED
;
1824 else if (clp
->cl_mvops
->minor_version
> 0)
1825 data
->o_arg
.createmode
= NFS4_CREATE_EXCLUSIVE4_1
;
1831 task
->tk_action
= NULL
;
1833 nfs4_sequence_done(task
, &data
->o_res
.seq_res
);
1836 static void nfs4_open_done(struct rpc_task
*task
, void *calldata
)
1838 struct nfs4_opendata
*data
= calldata
;
1840 data
->rpc_status
= task
->tk_status
;
1842 if (!nfs4_sequence_done(task
, &data
->o_res
.seq_res
))
1845 if (task
->tk_status
== 0) {
1846 if (data
->o_res
.f_attr
->valid
& NFS_ATTR_FATTR_TYPE
) {
1847 switch (data
->o_res
.f_attr
->mode
& S_IFMT
) {
1851 data
->rpc_status
= -ELOOP
;
1854 data
->rpc_status
= -EISDIR
;
1857 data
->rpc_status
= -ENOTDIR
;
1860 renew_lease(data
->o_res
.server
, data
->timestamp
);
1861 if (!(data
->o_res
.rflags
& NFS4_OPEN_RESULT_CONFIRM
))
1862 nfs_confirm_seqid(&data
->owner
->so_seqid
, 0);
1867 static void nfs4_open_release(void *calldata
)
1869 struct nfs4_opendata
*data
= calldata
;
1870 struct nfs4_state
*state
= NULL
;
1872 /* If this request hasn't been cancelled, do nothing */
1873 if (data
->cancelled
== 0)
1875 /* In case of error, no cleanup! */
1876 if (data
->rpc_status
!= 0 || !data
->rpc_done
)
1878 /* In case we need an open_confirm, no cleanup! */
1879 if (data
->o_res
.rflags
& NFS4_OPEN_RESULT_CONFIRM
)
1881 state
= nfs4_opendata_to_nfs4_state(data
);
1883 nfs4_close_state(state
, data
->o_arg
.fmode
);
1885 nfs4_opendata_put(data
);
1888 static const struct rpc_call_ops nfs4_open_ops
= {
1889 .rpc_call_prepare
= nfs4_open_prepare
,
1890 .rpc_call_done
= nfs4_open_done
,
1891 .rpc_release
= nfs4_open_release
,
1894 static int nfs4_run_open_task(struct nfs4_opendata
*data
, int isrecover
)
1896 struct inode
*dir
= data
->dir
->d_inode
;
1897 struct nfs_server
*server
= NFS_SERVER(dir
);
1898 struct nfs_openargs
*o_arg
= &data
->o_arg
;
1899 struct nfs_openres
*o_res
= &data
->o_res
;
1900 struct rpc_task
*task
;
1901 struct rpc_message msg
= {
1902 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_OPEN
],
1905 .rpc_cred
= data
->owner
->so_cred
,
1907 struct rpc_task_setup task_setup_data
= {
1908 .rpc_client
= server
->client
,
1909 .rpc_message
= &msg
,
1910 .callback_ops
= &nfs4_open_ops
,
1911 .callback_data
= data
,
1912 .workqueue
= nfsiod_workqueue
,
1913 .flags
= RPC_TASK_ASYNC
,
1917 nfs4_init_sequence(&o_arg
->seq_args
, &o_res
->seq_res
, 1);
1918 kref_get(&data
->kref
);
1920 data
->rpc_status
= 0;
1921 data
->cancelled
= 0;
1922 data
->is_recover
= 0;
1924 nfs4_set_sequence_privileged(&o_arg
->seq_args
);
1925 data
->is_recover
= 1;
1927 task
= rpc_run_task(&task_setup_data
);
1929 return PTR_ERR(task
);
1930 status
= nfs4_wait_for_completion_rpc_task(task
);
1932 data
->cancelled
= 1;
1935 status
= data
->rpc_status
;
1941 static int _nfs4_recover_proc_open(struct nfs4_opendata
*data
)
1943 struct inode
*dir
= data
->dir
->d_inode
;
1944 struct nfs_openres
*o_res
= &data
->o_res
;
1947 status
= nfs4_run_open_task(data
, 1);
1948 if (status
!= 0 || !data
->rpc_done
)
1951 nfs_fattr_map_and_free_names(NFS_SERVER(dir
), &data
->f_attr
);
1953 if (o_res
->rflags
& NFS4_OPEN_RESULT_CONFIRM
) {
1954 status
= _nfs4_proc_open_confirm(data
);
1963 * Additional permission checks in order to distinguish between an
1964 * open for read, and an open for execute. This works around the
1965 * fact that NFSv4 OPEN treats read and execute permissions as being
1967 * Note that in the non-execute case, we want to turn off permission
1968 * checking if we just created a new file (POSIX open() semantics).
1970 static int nfs4_opendata_access(struct rpc_cred
*cred
,
1971 struct nfs4_opendata
*opendata
,
1972 struct nfs4_state
*state
, fmode_t fmode
,
1975 struct nfs_access_entry cache
;
1978 /* access call failed or for some reason the server doesn't
1979 * support any access modes -- defer access call until later */
1980 if (opendata
->o_res
.access_supported
== 0)
1985 * Use openflags to check for exec, because fmode won't
1986 * always have FMODE_EXEC set when file open for exec.
1988 if (openflags
& __FMODE_EXEC
) {
1989 /* ONLY check for exec rights */
1991 } else if ((fmode
& FMODE_READ
) && !opendata
->file_created
)
1995 cache
.jiffies
= jiffies
;
1996 nfs_access_set_mask(&cache
, opendata
->o_res
.access_result
);
1997 nfs_access_add_cache(state
->inode
, &cache
);
1999 if ((mask
& ~cache
.mask
& (MAY_READ
| MAY_EXEC
)) == 0)
2002 /* even though OPEN succeeded, access is denied. Close the file */
2003 nfs4_close_state(state
, fmode
);
2008 * Note: On error, nfs4_proc_open will free the struct nfs4_opendata
2010 static int _nfs4_proc_open(struct nfs4_opendata
*data
)
2012 struct inode
*dir
= data
->dir
->d_inode
;
2013 struct nfs_server
*server
= NFS_SERVER(dir
);
2014 struct nfs_openargs
*o_arg
= &data
->o_arg
;
2015 struct nfs_openres
*o_res
= &data
->o_res
;
2018 status
= nfs4_run_open_task(data
, 0);
2019 if (!data
->rpc_done
)
2022 if (status
== -NFS4ERR_BADNAME
&&
2023 !(o_arg
->open_flags
& O_CREAT
))
2028 nfs_fattr_map_and_free_names(server
, &data
->f_attr
);
2030 if (o_arg
->open_flags
& O_CREAT
) {
2031 update_changeattr(dir
, &o_res
->cinfo
);
2032 if (o_arg
->open_flags
& O_EXCL
)
2033 data
->file_created
= 1;
2034 else if (o_res
->cinfo
.before
!= o_res
->cinfo
.after
)
2035 data
->file_created
= 1;
2037 if ((o_res
->rflags
& NFS4_OPEN_RESULT_LOCKTYPE_POSIX
) == 0)
2038 server
->caps
&= ~NFS_CAP_POSIX_LOCK
;
2039 if(o_res
->rflags
& NFS4_OPEN_RESULT_CONFIRM
) {
2040 status
= _nfs4_proc_open_confirm(data
);
2044 if (!(o_res
->f_attr
->valid
& NFS_ATTR_FATTR
))
2045 nfs4_proc_getattr(server
, &o_res
->fh
, o_res
->f_attr
, o_res
->f_label
);
2049 static int nfs4_recover_expired_lease(struct nfs_server
*server
)
2051 return nfs4_client_recover_expired_lease(server
->nfs_client
);
2056 * reclaim state on the server after a network partition.
2057 * Assumes caller holds the appropriate lock
2059 static int _nfs4_open_expired(struct nfs_open_context
*ctx
, struct nfs4_state
*state
)
2061 struct nfs4_opendata
*opendata
;
2064 opendata
= nfs4_open_recoverdata_alloc(ctx
, state
,
2065 NFS4_OPEN_CLAIM_FH
);
2066 if (IS_ERR(opendata
))
2067 return PTR_ERR(opendata
);
2068 ret
= nfs4_open_recover(opendata
, state
);
2070 d_drop(ctx
->dentry
);
2071 nfs4_opendata_put(opendata
);
2075 static int nfs4_do_open_expired(struct nfs_open_context
*ctx
, struct nfs4_state
*state
)
2077 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
2078 struct nfs4_exception exception
= { };
2082 err
= _nfs4_open_expired(ctx
, state
);
2083 trace_nfs4_open_expired(ctx
, 0, err
);
2084 if (nfs4_clear_cap_atomic_open_v1(server
, err
, &exception
))
2089 case -NFS4ERR_GRACE
:
2090 case -NFS4ERR_DELAY
:
2091 nfs4_handle_exception(server
, err
, &exception
);
2094 } while (exception
.retry
);
2099 static int nfs4_open_expired(struct nfs4_state_owner
*sp
, struct nfs4_state
*state
)
2101 struct nfs_open_context
*ctx
;
2104 ctx
= nfs4_state_find_open_context(state
);
2107 ret
= nfs4_do_open_expired(ctx
, state
);
2108 put_nfs_open_context(ctx
);
2112 static void nfs_finish_clear_delegation_stateid(struct nfs4_state
*state
)
2114 nfs_remove_bad_delegation(state
->inode
);
2115 write_seqlock(&state
->seqlock
);
2116 nfs4_stateid_copy(&state
->stateid
, &state
->open_stateid
);
2117 write_sequnlock(&state
->seqlock
);
2118 clear_bit(NFS_DELEGATED_STATE
, &state
->flags
);
2121 static void nfs40_clear_delegation_stateid(struct nfs4_state
*state
)
2123 if (rcu_access_pointer(NFS_I(state
->inode
)->delegation
) != NULL
)
2124 nfs_finish_clear_delegation_stateid(state
);
2127 static int nfs40_open_expired(struct nfs4_state_owner
*sp
, struct nfs4_state
*state
)
2129 /* NFSv4.0 doesn't allow for delegation recovery on open expire */
2130 nfs40_clear_delegation_stateid(state
);
2131 return nfs4_open_expired(sp
, state
);
2134 #if defined(CONFIG_NFS_V4_1)
2135 static void nfs41_check_delegation_stateid(struct nfs4_state
*state
)
2137 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
2138 nfs4_stateid stateid
;
2139 struct nfs_delegation
*delegation
;
2140 struct rpc_cred
*cred
;
2143 /* Get the delegation credential for use by test/free_stateid */
2145 delegation
= rcu_dereference(NFS_I(state
->inode
)->delegation
);
2146 if (delegation
== NULL
) {
2151 nfs4_stateid_copy(&stateid
, &delegation
->stateid
);
2152 cred
= get_rpccred(delegation
->cred
);
2154 status
= nfs41_test_stateid(server
, &stateid
, cred
);
2155 trace_nfs4_test_delegation_stateid(state
, NULL
, status
);
2157 if (status
!= NFS_OK
) {
2158 /* Free the stateid unless the server explicitly
2159 * informs us the stateid is unrecognized. */
2160 if (status
!= -NFS4ERR_BAD_STATEID
)
2161 nfs41_free_stateid(server
, &stateid
, cred
);
2162 nfs_finish_clear_delegation_stateid(state
);
2169 * nfs41_check_open_stateid - possibly free an open stateid
2171 * @state: NFSv4 state for an inode
2173 * Returns NFS_OK if recovery for this stateid is now finished.
2174 * Otherwise a negative NFS4ERR value is returned.
2176 static int nfs41_check_open_stateid(struct nfs4_state
*state
)
2178 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
2179 nfs4_stateid
*stateid
= &state
->open_stateid
;
2180 struct rpc_cred
*cred
= state
->owner
->so_cred
;
2183 /* If a state reset has been done, test_stateid is unneeded */
2184 if ((test_bit(NFS_O_RDONLY_STATE
, &state
->flags
) == 0) &&
2185 (test_bit(NFS_O_WRONLY_STATE
, &state
->flags
) == 0) &&
2186 (test_bit(NFS_O_RDWR_STATE
, &state
->flags
) == 0))
2187 return -NFS4ERR_BAD_STATEID
;
2189 status
= nfs41_test_stateid(server
, stateid
, cred
);
2190 trace_nfs4_test_open_stateid(state
, NULL
, status
);
2191 if (status
!= NFS_OK
) {
2192 /* Free the stateid unless the server explicitly
2193 * informs us the stateid is unrecognized. */
2194 if (status
!= -NFS4ERR_BAD_STATEID
)
2195 nfs41_free_stateid(server
, stateid
, cred
);
2197 clear_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
2198 clear_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
2199 clear_bit(NFS_O_RDWR_STATE
, &state
->flags
);
2200 clear_bit(NFS_OPEN_STATE
, &state
->flags
);
2205 static int nfs41_open_expired(struct nfs4_state_owner
*sp
, struct nfs4_state
*state
)
2209 nfs41_check_delegation_stateid(state
);
2210 status
= nfs41_check_open_stateid(state
);
2211 if (status
!= NFS_OK
)
2212 status
= nfs4_open_expired(sp
, state
);
2218 * on an EXCLUSIVE create, the server should send back a bitmask with FATTR4-*
2219 * fields corresponding to attributes that were used to store the verifier.
2220 * Make sure we clobber those fields in the later setattr call
2222 static inline void nfs4_exclusive_attrset(struct nfs4_opendata
*opendata
, struct iattr
*sattr
)
2224 if ((opendata
->o_res
.attrset
[1] & FATTR4_WORD1_TIME_ACCESS
) &&
2225 !(sattr
->ia_valid
& ATTR_ATIME_SET
))
2226 sattr
->ia_valid
|= ATTR_ATIME
;
2228 if ((opendata
->o_res
.attrset
[1] & FATTR4_WORD1_TIME_MODIFY
) &&
2229 !(sattr
->ia_valid
& ATTR_MTIME_SET
))
2230 sattr
->ia_valid
|= ATTR_MTIME
;
2233 static int _nfs4_open_and_get_state(struct nfs4_opendata
*opendata
,
2236 struct nfs_open_context
*ctx
)
2238 struct nfs4_state_owner
*sp
= opendata
->owner
;
2239 struct nfs_server
*server
= sp
->so_server
;
2240 struct dentry
*dentry
;
2241 struct nfs4_state
*state
;
2245 seq
= raw_seqcount_begin(&sp
->so_reclaim_seqcount
);
2247 ret
= _nfs4_proc_open(opendata
);
2251 state
= nfs4_opendata_to_nfs4_state(opendata
);
2252 ret
= PTR_ERR(state
);
2255 if (server
->caps
& NFS_CAP_POSIX_LOCK
)
2256 set_bit(NFS_STATE_POSIX_LOCKS
, &state
->flags
);
2258 dentry
= opendata
->dentry
;
2259 if (dentry
->d_inode
== NULL
) {
2260 /* FIXME: Is this d_drop() ever needed? */
2262 dentry
= d_add_unique(dentry
, igrab(state
->inode
));
2263 if (dentry
== NULL
) {
2264 dentry
= opendata
->dentry
;
2265 } else if (dentry
!= ctx
->dentry
) {
2267 ctx
->dentry
= dget(dentry
);
2269 nfs_set_verifier(dentry
,
2270 nfs_save_change_attribute(opendata
->dir
->d_inode
));
2273 ret
= nfs4_opendata_access(sp
->so_cred
, opendata
, state
, fmode
, flags
);
2278 if (dentry
->d_inode
== state
->inode
) {
2279 nfs_inode_attach_open_context(ctx
);
2280 if (read_seqcount_retry(&sp
->so_reclaim_seqcount
, seq
))
2281 nfs4_schedule_stateid_recovery(server
, state
);
2288 * Returns a referenced nfs4_state
2290 static int _nfs4_do_open(struct inode
*dir
,
2291 struct nfs_open_context
*ctx
,
2293 struct iattr
*sattr
,
2294 struct nfs4_label
*label
,
2297 struct nfs4_state_owner
*sp
;
2298 struct nfs4_state
*state
= NULL
;
2299 struct nfs_server
*server
= NFS_SERVER(dir
);
2300 struct nfs4_opendata
*opendata
;
2301 struct dentry
*dentry
= ctx
->dentry
;
2302 struct rpc_cred
*cred
= ctx
->cred
;
2303 struct nfs4_threshold
**ctx_th
= &ctx
->mdsthreshold
;
2304 fmode_t fmode
= ctx
->mode
& (FMODE_READ
|FMODE_WRITE
|FMODE_EXEC
);
2305 enum open_claim_type4 claim
= NFS4_OPEN_CLAIM_NULL
;
2306 struct nfs4_label
*olabel
= NULL
;
2309 /* Protect against reboot recovery conflicts */
2311 sp
= nfs4_get_state_owner(server
, cred
, GFP_KERNEL
);
2313 dprintk("nfs4_do_open: nfs4_get_state_owner failed!\n");
2316 status
= nfs4_recover_expired_lease(server
);
2318 goto err_put_state_owner
;
2319 if (dentry
->d_inode
!= NULL
)
2320 nfs4_return_incompatible_delegation(dentry
->d_inode
, fmode
);
2322 if (dentry
->d_inode
)
2323 claim
= NFS4_OPEN_CLAIM_FH
;
2324 opendata
= nfs4_opendata_alloc(dentry
, sp
, fmode
, flags
, sattr
,
2325 label
, claim
, GFP_KERNEL
);
2326 if (opendata
== NULL
)
2327 goto err_put_state_owner
;
2330 olabel
= nfs4_label_alloc(server
, GFP_KERNEL
);
2331 if (IS_ERR(olabel
)) {
2332 status
= PTR_ERR(olabel
);
2333 goto err_opendata_put
;
2337 if (server
->attr_bitmask
[2] & FATTR4_WORD2_MDSTHRESHOLD
) {
2338 if (!opendata
->f_attr
.mdsthreshold
) {
2339 opendata
->f_attr
.mdsthreshold
= pnfs_mdsthreshold_alloc();
2340 if (!opendata
->f_attr
.mdsthreshold
)
2341 goto err_free_label
;
2343 opendata
->o_arg
.open_bitmap
= &nfs4_pnfs_open_bitmap
[0];
2345 if (dentry
->d_inode
!= NULL
)
2346 opendata
->state
= nfs4_get_open_state(dentry
->d_inode
, sp
);
2348 status
= _nfs4_open_and_get_state(opendata
, fmode
, flags
, ctx
);
2350 goto err_free_label
;
2353 if ((opendata
->o_arg
.open_flags
& O_EXCL
) &&
2354 (opendata
->o_arg
.createmode
!= NFS4_CREATE_GUARDED
)) {
2355 nfs4_exclusive_attrset(opendata
, sattr
);
2357 nfs_fattr_init(opendata
->o_res
.f_attr
);
2358 status
= nfs4_do_setattr(state
->inode
, cred
,
2359 opendata
->o_res
.f_attr
, sattr
,
2360 state
, label
, olabel
);
2362 nfs_setattr_update_inode(state
->inode
, sattr
);
2363 nfs_post_op_update_inode(state
->inode
, opendata
->o_res
.f_attr
);
2364 nfs_setsecurity(state
->inode
, opendata
->o_res
.f_attr
, olabel
);
2367 if (opendata
->file_created
)
2368 *opened
|= FILE_CREATED
;
2370 if (pnfs_use_threshold(ctx_th
, opendata
->f_attr
.mdsthreshold
, server
)) {
2371 *ctx_th
= opendata
->f_attr
.mdsthreshold
;
2372 opendata
->f_attr
.mdsthreshold
= NULL
;
2375 nfs4_label_free(olabel
);
2377 nfs4_opendata_put(opendata
);
2378 nfs4_put_state_owner(sp
);
2381 nfs4_label_free(olabel
);
2383 nfs4_opendata_put(opendata
);
2384 err_put_state_owner
:
2385 nfs4_put_state_owner(sp
);
2391 static struct nfs4_state
*nfs4_do_open(struct inode
*dir
,
2392 struct nfs_open_context
*ctx
,
2394 struct iattr
*sattr
,
2395 struct nfs4_label
*label
,
2398 struct nfs_server
*server
= NFS_SERVER(dir
);
2399 struct nfs4_exception exception
= { };
2400 struct nfs4_state
*res
;
2404 status
= _nfs4_do_open(dir
, ctx
, flags
, sattr
, label
, opened
);
2406 trace_nfs4_open_file(ctx
, flags
, status
);
2409 /* NOTE: BAD_SEQID means the server and client disagree about the
2410 * book-keeping w.r.t. state-changing operations
2411 * (OPEN/CLOSE/LOCK/LOCKU...)
2412 * It is actually a sign of a bug on the client or on the server.
2414 * If we receive a BAD_SEQID error in the particular case of
2415 * doing an OPEN, we assume that nfs_increment_open_seqid() will
2416 * have unhashed the old state_owner for us, and that we can
2417 * therefore safely retry using a new one. We should still warn
2418 * the user though...
2420 if (status
== -NFS4ERR_BAD_SEQID
) {
2421 pr_warn_ratelimited("NFS: v4 server %s "
2422 " returned a bad sequence-id error!\n",
2423 NFS_SERVER(dir
)->nfs_client
->cl_hostname
);
2424 exception
.retry
= 1;
2428 * BAD_STATEID on OPEN means that the server cancelled our
2429 * state before it received the OPEN_CONFIRM.
2430 * Recover by retrying the request as per the discussion
2431 * on Page 181 of RFC3530.
2433 if (status
== -NFS4ERR_BAD_STATEID
) {
2434 exception
.retry
= 1;
2437 if (status
== -EAGAIN
) {
2438 /* We must have found a delegation */
2439 exception
.retry
= 1;
2442 if (nfs4_clear_cap_atomic_open_v1(server
, status
, &exception
))
2444 res
= ERR_PTR(nfs4_handle_exception(server
,
2445 status
, &exception
));
2446 } while (exception
.retry
);
2450 static int _nfs4_do_setattr(struct inode
*inode
, struct rpc_cred
*cred
,
2451 struct nfs_fattr
*fattr
, struct iattr
*sattr
,
2452 struct nfs4_state
*state
, struct nfs4_label
*ilabel
,
2453 struct nfs4_label
*olabel
)
2455 struct nfs_server
*server
= NFS_SERVER(inode
);
2456 struct nfs_setattrargs arg
= {
2457 .fh
= NFS_FH(inode
),
2460 .bitmask
= server
->attr_bitmask
,
2463 struct nfs_setattrres res
= {
2468 struct rpc_message msg
= {
2469 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETATTR
],
2474 unsigned long timestamp
= jiffies
;
2479 arg
.bitmask
= nfs4_bitmask(server
, ilabel
);
2481 arg
.bitmask
= nfs4_bitmask(server
, olabel
);
2483 nfs_fattr_init(fattr
);
2485 /* Servers should only apply open mode checks for file size changes */
2486 truncate
= (sattr
->ia_valid
& ATTR_SIZE
) ? true : false;
2487 fmode
= truncate
? FMODE_WRITE
: FMODE_READ
;
2489 if (nfs4_copy_delegation_stateid(&arg
.stateid
, inode
, fmode
)) {
2490 /* Use that stateid */
2491 } else if (truncate
&& state
!= NULL
) {
2492 struct nfs_lockowner lockowner
= {
2493 .l_owner
= current
->files
,
2494 .l_pid
= current
->tgid
,
2496 if (!nfs4_valid_open_stateid(state
))
2498 if (nfs4_select_rw_stateid(&arg
.stateid
, state
, FMODE_WRITE
,
2499 &lockowner
) == -EIO
)
2502 nfs4_stateid_copy(&arg
.stateid
, &zero_stateid
);
2504 status
= nfs4_call_sync(server
->client
, server
, &msg
, &arg
.seq_args
, &res
.seq_res
, 1);
2505 if (status
== 0 && state
!= NULL
)
2506 renew_lease(server
, timestamp
);
2510 static int nfs4_do_setattr(struct inode
*inode
, struct rpc_cred
*cred
,
2511 struct nfs_fattr
*fattr
, struct iattr
*sattr
,
2512 struct nfs4_state
*state
, struct nfs4_label
*ilabel
,
2513 struct nfs4_label
*olabel
)
2515 struct nfs_server
*server
= NFS_SERVER(inode
);
2516 struct nfs4_exception exception
= {
2522 err
= _nfs4_do_setattr(inode
, cred
, fattr
, sattr
, state
, ilabel
, olabel
);
2523 trace_nfs4_setattr(inode
, err
);
2525 case -NFS4ERR_OPENMODE
:
2526 if (!(sattr
->ia_valid
& ATTR_SIZE
)) {
2527 pr_warn_once("NFSv4: server %s is incorrectly "
2528 "applying open mode checks to "
2529 "a SETATTR that is not "
2530 "changing file size.\n",
2531 server
->nfs_client
->cl_hostname
);
2533 if (state
&& !(state
->state
& FMODE_WRITE
)) {
2535 if (sattr
->ia_valid
& ATTR_OPEN
)
2540 err
= nfs4_handle_exception(server
, err
, &exception
);
2541 } while (exception
.retry
);
2546 struct nfs4_closedata
{
2547 struct inode
*inode
;
2548 struct nfs4_state
*state
;
2549 struct nfs_closeargs arg
;
2550 struct nfs_closeres res
;
2551 struct nfs_fattr fattr
;
2552 unsigned long timestamp
;
2557 static void nfs4_free_closedata(void *data
)
2559 struct nfs4_closedata
*calldata
= data
;
2560 struct nfs4_state_owner
*sp
= calldata
->state
->owner
;
2561 struct super_block
*sb
= calldata
->state
->inode
->i_sb
;
2564 pnfs_roc_release(calldata
->state
->inode
);
2565 nfs4_put_open_state(calldata
->state
);
2566 nfs_free_seqid(calldata
->arg
.seqid
);
2567 nfs4_put_state_owner(sp
);
2568 nfs_sb_deactive(sb
);
2572 static void nfs4_close_done(struct rpc_task
*task
, void *data
)
2574 struct nfs4_closedata
*calldata
= data
;
2575 struct nfs4_state
*state
= calldata
->state
;
2576 struct nfs_server
*server
= NFS_SERVER(calldata
->inode
);
2577 nfs4_stateid
*res_stateid
= NULL
;
2579 dprintk("%s: begin!\n", __func__
);
2580 if (!nfs4_sequence_done(task
, &calldata
->res
.seq_res
))
2582 trace_nfs4_close(state
, &calldata
->arg
, &calldata
->res
, task
->tk_status
);
2583 /* hmm. we are done with the inode, and in the process of freeing
2584 * the state_owner. we keep this around to process errors
2586 switch (task
->tk_status
) {
2588 res_stateid
= &calldata
->res
.stateid
;
2589 if (calldata
->arg
.fmode
== 0 && calldata
->roc
)
2590 pnfs_roc_set_barrier(state
->inode
,
2591 calldata
->roc_barrier
);
2592 renew_lease(server
, calldata
->timestamp
);
2594 case -NFS4ERR_ADMIN_REVOKED
:
2595 case -NFS4ERR_STALE_STATEID
:
2596 case -NFS4ERR_OLD_STATEID
:
2597 case -NFS4ERR_BAD_STATEID
:
2598 case -NFS4ERR_EXPIRED
:
2599 if (calldata
->arg
.fmode
== 0)
2602 if (nfs4_async_handle_error(task
, server
, state
, NULL
) == -EAGAIN
) {
2603 rpc_restart_call_prepare(task
);
2607 nfs_clear_open_stateid(state
, res_stateid
, calldata
->arg
.fmode
);
2609 nfs_release_seqid(calldata
->arg
.seqid
);
2610 nfs_refresh_inode(calldata
->inode
, calldata
->res
.fattr
);
2611 dprintk("%s: done, ret = %d!\n", __func__
, task
->tk_status
);
2614 static void nfs4_close_prepare(struct rpc_task
*task
, void *data
)
2616 struct nfs4_closedata
*calldata
= data
;
2617 struct nfs4_state
*state
= calldata
->state
;
2618 struct inode
*inode
= calldata
->inode
;
2619 bool is_rdonly
, is_wronly
, is_rdwr
;
2622 dprintk("%s: begin!\n", __func__
);
2623 if (nfs_wait_on_sequence(calldata
->arg
.seqid
, task
) != 0)
2626 task
->tk_msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_OPEN_DOWNGRADE
];
2627 spin_lock(&state
->owner
->so_lock
);
2628 is_rdwr
= test_bit(NFS_O_RDWR_STATE
, &state
->flags
);
2629 is_rdonly
= test_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
2630 is_wronly
= test_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
2631 /* Calculate the change in open mode */
2632 calldata
->arg
.fmode
= 0;
2633 if (state
->n_rdwr
== 0) {
2634 if (state
->n_rdonly
== 0)
2635 call_close
|= is_rdonly
;
2637 calldata
->arg
.fmode
|= FMODE_READ
;
2638 if (state
->n_wronly
== 0)
2639 call_close
|= is_wronly
;
2641 calldata
->arg
.fmode
|= FMODE_WRITE
;
2643 calldata
->arg
.fmode
|= FMODE_READ
|FMODE_WRITE
;
2645 if (calldata
->arg
.fmode
== 0)
2646 call_close
|= is_rdwr
;
2648 if (!nfs4_valid_open_stateid(state
))
2650 spin_unlock(&state
->owner
->so_lock
);
2653 /* Note: exit _without_ calling nfs4_close_done */
2657 if (calldata
->arg
.fmode
== 0) {
2658 task
->tk_msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_CLOSE
];
2659 if (calldata
->roc
&&
2660 pnfs_roc_drain(inode
, &calldata
->roc_barrier
, task
)) {
2661 nfs_release_seqid(calldata
->arg
.seqid
);
2666 nfs_fattr_init(calldata
->res
.fattr
);
2667 calldata
->timestamp
= jiffies
;
2668 if (nfs4_setup_sequence(NFS_SERVER(inode
),
2669 &calldata
->arg
.seq_args
,
2670 &calldata
->res
.seq_res
,
2672 nfs_release_seqid(calldata
->arg
.seqid
);
2673 dprintk("%s: done!\n", __func__
);
2676 task
->tk_action
= NULL
;
2678 nfs4_sequence_done(task
, &calldata
->res
.seq_res
);
2681 static const struct rpc_call_ops nfs4_close_ops
= {
2682 .rpc_call_prepare
= nfs4_close_prepare
,
2683 .rpc_call_done
= nfs4_close_done
,
2684 .rpc_release
= nfs4_free_closedata
,
2687 static bool nfs4_state_has_opener(struct nfs4_state
*state
)
2689 /* first check existing openers */
2690 if (test_bit(NFS_O_RDONLY_STATE
, &state
->flags
) != 0 &&
2691 state
->n_rdonly
!= 0)
2694 if (test_bit(NFS_O_WRONLY_STATE
, &state
->flags
) != 0 &&
2695 state
->n_wronly
!= 0)
2698 if (test_bit(NFS_O_RDWR_STATE
, &state
->flags
) != 0 &&
2705 static bool nfs4_roc(struct inode
*inode
)
2707 struct nfs_inode
*nfsi
= NFS_I(inode
);
2708 struct nfs_open_context
*ctx
;
2709 struct nfs4_state
*state
;
2711 spin_lock(&inode
->i_lock
);
2712 list_for_each_entry(ctx
, &nfsi
->open_files
, list
) {
2716 if (nfs4_state_has_opener(state
)) {
2717 spin_unlock(&inode
->i_lock
);
2721 spin_unlock(&inode
->i_lock
);
2723 if (nfs4_check_delegation(inode
, FMODE_READ
))
2726 return pnfs_roc(inode
);
2730 * It is possible for data to be read/written from a mem-mapped file
2731 * after the sys_close call (which hits the vfs layer as a flush).
2732 * This means that we can't safely call nfsv4 close on a file until
2733 * the inode is cleared. This in turn means that we are not good
2734 * NFSv4 citizens - we do not indicate to the server to update the file's
2735 * share state even when we are done with one of the three share
2736 * stateid's in the inode.
2738 * NOTE: Caller must be holding the sp->so_owner semaphore!
2740 int nfs4_do_close(struct nfs4_state
*state
, gfp_t gfp_mask
, int wait
)
2742 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
2743 struct nfs4_closedata
*calldata
;
2744 struct nfs4_state_owner
*sp
= state
->owner
;
2745 struct rpc_task
*task
;
2746 struct rpc_message msg
= {
2747 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_CLOSE
],
2748 .rpc_cred
= state
->owner
->so_cred
,
2750 struct rpc_task_setup task_setup_data
= {
2751 .rpc_client
= server
->client
,
2752 .rpc_message
= &msg
,
2753 .callback_ops
= &nfs4_close_ops
,
2754 .workqueue
= nfsiod_workqueue
,
2755 .flags
= RPC_TASK_ASYNC
,
2757 int status
= -ENOMEM
;
2759 nfs4_state_protect(server
->nfs_client
, NFS_SP4_MACH_CRED_CLEANUP
,
2760 &task_setup_data
.rpc_client
, &msg
);
2762 calldata
= kzalloc(sizeof(*calldata
), gfp_mask
);
2763 if (calldata
== NULL
)
2765 nfs4_init_sequence(&calldata
->arg
.seq_args
, &calldata
->res
.seq_res
, 1);
2766 calldata
->inode
= state
->inode
;
2767 calldata
->state
= state
;
2768 calldata
->arg
.fh
= NFS_FH(state
->inode
);
2769 calldata
->arg
.stateid
= &state
->open_stateid
;
2770 /* Serialization for the sequence id */
2771 calldata
->arg
.seqid
= nfs_alloc_seqid(&state
->owner
->so_seqid
, gfp_mask
);
2772 if (calldata
->arg
.seqid
== NULL
)
2773 goto out_free_calldata
;
2774 calldata
->arg
.fmode
= 0;
2775 calldata
->arg
.bitmask
= server
->cache_consistency_bitmask
;
2776 calldata
->res
.fattr
= &calldata
->fattr
;
2777 calldata
->res
.seqid
= calldata
->arg
.seqid
;
2778 calldata
->res
.server
= server
;
2779 calldata
->roc
= nfs4_roc(state
->inode
);
2780 nfs_sb_active(calldata
->inode
->i_sb
);
2782 msg
.rpc_argp
= &calldata
->arg
;
2783 msg
.rpc_resp
= &calldata
->res
;
2784 task_setup_data
.callback_data
= calldata
;
2785 task
= rpc_run_task(&task_setup_data
);
2787 return PTR_ERR(task
);
2790 status
= rpc_wait_for_completion_task(task
);
2796 nfs4_put_open_state(state
);
2797 nfs4_put_state_owner(sp
);
2801 static struct inode
*
2802 nfs4_atomic_open(struct inode
*dir
, struct nfs_open_context
*ctx
,
2803 int open_flags
, struct iattr
*attr
, int *opened
)
2805 struct nfs4_state
*state
;
2806 struct nfs4_label l
= {0, 0, 0, NULL
}, *label
= NULL
;
2808 label
= nfs4_label_init_security(dir
, ctx
->dentry
, attr
, &l
);
2810 /* Protect against concurrent sillydeletes */
2811 state
= nfs4_do_open(dir
, ctx
, open_flags
, attr
, label
, opened
);
2813 nfs4_label_release_security(label
);
2816 return ERR_CAST(state
);
2817 return state
->inode
;
2820 static void nfs4_close_context(struct nfs_open_context
*ctx
, int is_sync
)
2822 if (ctx
->state
== NULL
)
2825 nfs4_close_sync(ctx
->state
, ctx
->mode
);
2827 nfs4_close_state(ctx
->state
, ctx
->mode
);
2830 #define FATTR4_WORD1_NFS40_MASK (2*FATTR4_WORD1_MOUNTED_ON_FILEID - 1UL)
2831 #define FATTR4_WORD2_NFS41_MASK (2*FATTR4_WORD2_SUPPATTR_EXCLCREAT - 1UL)
2832 #define FATTR4_WORD2_NFS42_MASK (2*FATTR4_WORD2_SECURITY_LABEL - 1UL)
2834 static int _nfs4_server_capabilities(struct nfs_server
*server
, struct nfs_fh
*fhandle
)
2836 struct nfs4_server_caps_arg args
= {
2839 struct nfs4_server_caps_res res
= {};
2840 struct rpc_message msg
= {
2841 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SERVER_CAPS
],
2847 status
= nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
2849 /* Sanity check the server answers */
2850 switch (server
->nfs_client
->cl_minorversion
) {
2852 res
.attr_bitmask
[1] &= FATTR4_WORD1_NFS40_MASK
;
2853 res
.attr_bitmask
[2] = 0;
2856 res
.attr_bitmask
[2] &= FATTR4_WORD2_NFS41_MASK
;
2859 res
.attr_bitmask
[2] &= FATTR4_WORD2_NFS42_MASK
;
2861 memcpy(server
->attr_bitmask
, res
.attr_bitmask
, sizeof(server
->attr_bitmask
));
2862 server
->caps
&= ~(NFS_CAP_ACLS
|NFS_CAP_HARDLINKS
|
2863 NFS_CAP_SYMLINKS
|NFS_CAP_FILEID
|
2864 NFS_CAP_MODE
|NFS_CAP_NLINK
|NFS_CAP_OWNER
|
2865 NFS_CAP_OWNER_GROUP
|NFS_CAP_ATIME
|
2866 NFS_CAP_CTIME
|NFS_CAP_MTIME
|
2867 NFS_CAP_SECURITY_LABEL
);
2868 if (res
.attr_bitmask
[0] & FATTR4_WORD0_ACL
&&
2869 res
.acl_bitmask
& ACL4_SUPPORT_ALLOW_ACL
)
2870 server
->caps
|= NFS_CAP_ACLS
;
2871 if (res
.has_links
!= 0)
2872 server
->caps
|= NFS_CAP_HARDLINKS
;
2873 if (res
.has_symlinks
!= 0)
2874 server
->caps
|= NFS_CAP_SYMLINKS
;
2875 if (res
.attr_bitmask
[0] & FATTR4_WORD0_FILEID
)
2876 server
->caps
|= NFS_CAP_FILEID
;
2877 if (res
.attr_bitmask
[1] & FATTR4_WORD1_MODE
)
2878 server
->caps
|= NFS_CAP_MODE
;
2879 if (res
.attr_bitmask
[1] & FATTR4_WORD1_NUMLINKS
)
2880 server
->caps
|= NFS_CAP_NLINK
;
2881 if (res
.attr_bitmask
[1] & FATTR4_WORD1_OWNER
)
2882 server
->caps
|= NFS_CAP_OWNER
;
2883 if (res
.attr_bitmask
[1] & FATTR4_WORD1_OWNER_GROUP
)
2884 server
->caps
|= NFS_CAP_OWNER_GROUP
;
2885 if (res
.attr_bitmask
[1] & FATTR4_WORD1_TIME_ACCESS
)
2886 server
->caps
|= NFS_CAP_ATIME
;
2887 if (res
.attr_bitmask
[1] & FATTR4_WORD1_TIME_METADATA
)
2888 server
->caps
|= NFS_CAP_CTIME
;
2889 if (res
.attr_bitmask
[1] & FATTR4_WORD1_TIME_MODIFY
)
2890 server
->caps
|= NFS_CAP_MTIME
;
2891 #ifdef CONFIG_NFS_V4_SECURITY_LABEL
2892 if (res
.attr_bitmask
[2] & FATTR4_WORD2_SECURITY_LABEL
)
2893 server
->caps
|= NFS_CAP_SECURITY_LABEL
;
2895 memcpy(server
->attr_bitmask_nl
, res
.attr_bitmask
,
2896 sizeof(server
->attr_bitmask
));
2897 server
->attr_bitmask_nl
[2] &= ~FATTR4_WORD2_SECURITY_LABEL
;
2899 memcpy(server
->cache_consistency_bitmask
, res
.attr_bitmask
, sizeof(server
->cache_consistency_bitmask
));
2900 server
->cache_consistency_bitmask
[0] &= FATTR4_WORD0_CHANGE
|FATTR4_WORD0_SIZE
;
2901 server
->cache_consistency_bitmask
[1] &= FATTR4_WORD1_TIME_METADATA
|FATTR4_WORD1_TIME_MODIFY
;
2902 server
->cache_consistency_bitmask
[2] = 0;
2903 server
->acl_bitmask
= res
.acl_bitmask
;
2904 server
->fh_expire_type
= res
.fh_expire_type
;
2910 int nfs4_server_capabilities(struct nfs_server
*server
, struct nfs_fh
*fhandle
)
2912 struct nfs4_exception exception
= { };
2915 err
= nfs4_handle_exception(server
,
2916 _nfs4_server_capabilities(server
, fhandle
),
2918 } while (exception
.retry
);
2922 static int _nfs4_lookup_root(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
2923 struct nfs_fsinfo
*info
)
2926 struct nfs4_lookup_root_arg args
= {
2929 struct nfs4_lookup_res res
= {
2931 .fattr
= info
->fattr
,
2934 struct rpc_message msg
= {
2935 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOOKUP_ROOT
],
2940 bitmask
[0] = nfs4_fattr_bitmap
[0];
2941 bitmask
[1] = nfs4_fattr_bitmap
[1];
2943 * Process the label in the upcoming getfattr
2945 bitmask
[2] = nfs4_fattr_bitmap
[2] & ~FATTR4_WORD2_SECURITY_LABEL
;
2947 nfs_fattr_init(info
->fattr
);
2948 return nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
2951 static int nfs4_lookup_root(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
2952 struct nfs_fsinfo
*info
)
2954 struct nfs4_exception exception
= { };
2957 err
= _nfs4_lookup_root(server
, fhandle
, info
);
2958 trace_nfs4_lookup_root(server
, fhandle
, info
->fattr
, err
);
2961 case -NFS4ERR_WRONGSEC
:
2964 err
= nfs4_handle_exception(server
, err
, &exception
);
2966 } while (exception
.retry
);
2971 static int nfs4_lookup_root_sec(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
2972 struct nfs_fsinfo
*info
, rpc_authflavor_t flavor
)
2974 struct rpc_auth_create_args auth_args
= {
2975 .pseudoflavor
= flavor
,
2977 struct rpc_auth
*auth
;
2980 auth
= rpcauth_create(&auth_args
, server
->client
);
2985 ret
= nfs4_lookup_root(server
, fhandle
, info
);
2991 * Retry pseudoroot lookup with various security flavors. We do this when:
2993 * NFSv4.0: the PUTROOTFH operation returns NFS4ERR_WRONGSEC
2994 * NFSv4.1: the server does not support the SECINFO_NO_NAME operation
2996 * Returns zero on success, or a negative NFS4ERR value, or a
2997 * negative errno value.
2999 static int nfs4_find_root_sec(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
3000 struct nfs_fsinfo
*info
)
3002 /* Per 3530bis 15.33.5 */
3003 static const rpc_authflavor_t flav_array
[] = {
3007 RPC_AUTH_UNIX
, /* courtesy */
3010 int status
= -EPERM
;
3013 if (server
->auth_info
.flavor_len
> 0) {
3014 /* try each flavor specified by user */
3015 for (i
= 0; i
< server
->auth_info
.flavor_len
; i
++) {
3016 status
= nfs4_lookup_root_sec(server
, fhandle
, info
,
3017 server
->auth_info
.flavors
[i
]);
3018 if (status
== -NFS4ERR_WRONGSEC
|| status
== -EACCES
)
3023 /* no flavors specified by user, try default list */
3024 for (i
= 0; i
< ARRAY_SIZE(flav_array
); i
++) {
3025 status
= nfs4_lookup_root_sec(server
, fhandle
, info
,
3027 if (status
== -NFS4ERR_WRONGSEC
|| status
== -EACCES
)
3034 * -EACCESS could mean that the user doesn't have correct permissions
3035 * to access the mount. It could also mean that we tried to mount
3036 * with a gss auth flavor, but rpc.gssd isn't running. Either way,
3037 * existing mount programs don't handle -EACCES very well so it should
3038 * be mapped to -EPERM instead.
3040 if (status
== -EACCES
)
3045 static int nfs4_do_find_root_sec(struct nfs_server
*server
,
3046 struct nfs_fh
*fhandle
, struct nfs_fsinfo
*info
)
3048 int mv
= server
->nfs_client
->cl_minorversion
;
3049 return nfs_v4_minor_ops
[mv
]->find_root_sec(server
, fhandle
, info
);
3053 * nfs4_proc_get_rootfh - get file handle for server's pseudoroot
3054 * @server: initialized nfs_server handle
3055 * @fhandle: we fill in the pseudo-fs root file handle
3056 * @info: we fill in an FSINFO struct
3057 * @auth_probe: probe the auth flavours
3059 * Returns zero on success, or a negative errno.
3061 int nfs4_proc_get_rootfh(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
3062 struct nfs_fsinfo
*info
,
3067 switch (auth_probe
) {
3069 status
= nfs4_lookup_root(server
, fhandle
, info
);
3070 if (status
!= -NFS4ERR_WRONGSEC
)
3073 status
= nfs4_do_find_root_sec(server
, fhandle
, info
);
3077 status
= nfs4_server_capabilities(server
, fhandle
);
3079 status
= nfs4_do_fsinfo(server
, fhandle
, info
);
3081 return nfs4_map_errors(status
);
3084 static int nfs4_proc_get_root(struct nfs_server
*server
, struct nfs_fh
*mntfh
,
3085 struct nfs_fsinfo
*info
)
3088 struct nfs_fattr
*fattr
= info
->fattr
;
3089 struct nfs4_label
*label
= NULL
;
3091 error
= nfs4_server_capabilities(server
, mntfh
);
3093 dprintk("nfs4_get_root: getcaps error = %d\n", -error
);
3097 label
= nfs4_label_alloc(server
, GFP_KERNEL
);
3099 return PTR_ERR(label
);
3101 error
= nfs4_proc_getattr(server
, mntfh
, fattr
, label
);
3103 dprintk("nfs4_get_root: getattr error = %d\n", -error
);
3104 goto err_free_label
;
3107 if (fattr
->valid
& NFS_ATTR_FATTR_FSID
&&
3108 !nfs_fsid_equal(&server
->fsid
, &fattr
->fsid
))
3109 memcpy(&server
->fsid
, &fattr
->fsid
, sizeof(server
->fsid
));
3112 nfs4_label_free(label
);
3118 * Get locations and (maybe) other attributes of a referral.
3119 * Note that we'll actually follow the referral later when
3120 * we detect fsid mismatch in inode revalidation
3122 static int nfs4_get_referral(struct rpc_clnt
*client
, struct inode
*dir
,
3123 const struct qstr
*name
, struct nfs_fattr
*fattr
,
3124 struct nfs_fh
*fhandle
)
3126 int status
= -ENOMEM
;
3127 struct page
*page
= NULL
;
3128 struct nfs4_fs_locations
*locations
= NULL
;
3130 page
= alloc_page(GFP_KERNEL
);
3133 locations
= kmalloc(sizeof(struct nfs4_fs_locations
), GFP_KERNEL
);
3134 if (locations
== NULL
)
3137 status
= nfs4_proc_fs_locations(client
, dir
, name
, locations
, page
);
3142 * If the fsid didn't change, this is a migration event, not a
3143 * referral. Cause us to drop into the exception handler, which
3144 * will kick off migration recovery.
3146 if (nfs_fsid_equal(&NFS_SERVER(dir
)->fsid
, &locations
->fattr
.fsid
)) {
3147 dprintk("%s: server did not return a different fsid for"
3148 " a referral at %s\n", __func__
, name
->name
);
3149 status
= -NFS4ERR_MOVED
;
3152 /* Fixup attributes for the nfs_lookup() call to nfs_fhget() */
3153 nfs_fixup_referral_attributes(&locations
->fattr
);
3155 /* replace the lookup nfs_fattr with the locations nfs_fattr */
3156 memcpy(fattr
, &locations
->fattr
, sizeof(struct nfs_fattr
));
3157 memset(fhandle
, 0, sizeof(struct nfs_fh
));
3165 static int _nfs4_proc_getattr(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
3166 struct nfs_fattr
*fattr
, struct nfs4_label
*label
)
3168 struct nfs4_getattr_arg args
= {
3170 .bitmask
= server
->attr_bitmask
,
3172 struct nfs4_getattr_res res
= {
3177 struct rpc_message msg
= {
3178 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GETATTR
],
3183 args
.bitmask
= nfs4_bitmask(server
, label
);
3185 nfs_fattr_init(fattr
);
3186 return nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
3189 static int nfs4_proc_getattr(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
3190 struct nfs_fattr
*fattr
, struct nfs4_label
*label
)
3192 struct nfs4_exception exception
= { };
3195 err
= _nfs4_proc_getattr(server
, fhandle
, fattr
, label
);
3196 trace_nfs4_getattr(server
, fhandle
, fattr
, err
);
3197 err
= nfs4_handle_exception(server
, err
,
3199 } while (exception
.retry
);
3204 * The file is not closed if it is opened due to the a request to change
3205 * the size of the file. The open call will not be needed once the
3206 * VFS layer lookup-intents are implemented.
3208 * Close is called when the inode is destroyed.
3209 * If we haven't opened the file for O_WRONLY, we
3210 * need to in the size_change case to obtain a stateid.
3213 * Because OPEN is always done by name in nfsv4, it is
3214 * possible that we opened a different file by the same
3215 * name. We can recognize this race condition, but we
3216 * can't do anything about it besides returning an error.
3218 * This will be fixed with VFS changes (lookup-intent).
3221 nfs4_proc_setattr(struct dentry
*dentry
, struct nfs_fattr
*fattr
,
3222 struct iattr
*sattr
)
3224 struct inode
*inode
= dentry
->d_inode
;
3225 struct rpc_cred
*cred
= NULL
;
3226 struct nfs4_state
*state
= NULL
;
3227 struct nfs4_label
*label
= NULL
;
3230 if (pnfs_ld_layoutret_on_setattr(inode
) &&
3231 sattr
->ia_valid
& ATTR_SIZE
&&
3232 sattr
->ia_size
< i_size_read(inode
))
3233 pnfs_commit_and_return_layout(inode
);
3235 nfs_fattr_init(fattr
);
3237 /* Deal with open(O_TRUNC) */
3238 if (sattr
->ia_valid
& ATTR_OPEN
)
3239 sattr
->ia_valid
&= ~(ATTR_MTIME
|ATTR_CTIME
);
3241 /* Optimization: if the end result is no change, don't RPC */
3242 if ((sattr
->ia_valid
& ~(ATTR_FILE
|ATTR_OPEN
)) == 0)
3245 /* Search for an existing open(O_WRITE) file */
3246 if (sattr
->ia_valid
& ATTR_FILE
) {
3247 struct nfs_open_context
*ctx
;
3249 ctx
= nfs_file_open_context(sattr
->ia_file
);
3256 label
= nfs4_label_alloc(NFS_SERVER(inode
), GFP_KERNEL
);
3258 return PTR_ERR(label
);
3260 status
= nfs4_do_setattr(inode
, cred
, fattr
, sattr
, state
, NULL
, label
);
3262 nfs_setattr_update_inode(inode
, sattr
);
3263 nfs_setsecurity(inode
, fattr
, label
);
3265 nfs4_label_free(label
);
3269 static int _nfs4_proc_lookup(struct rpc_clnt
*clnt
, struct inode
*dir
,
3270 const struct qstr
*name
, struct nfs_fh
*fhandle
,
3271 struct nfs_fattr
*fattr
, struct nfs4_label
*label
)
3273 struct nfs_server
*server
= NFS_SERVER(dir
);
3275 struct nfs4_lookup_arg args
= {
3276 .bitmask
= server
->attr_bitmask
,
3277 .dir_fh
= NFS_FH(dir
),
3280 struct nfs4_lookup_res res
= {
3286 struct rpc_message msg
= {
3287 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOOKUP
],
3292 args
.bitmask
= nfs4_bitmask(server
, label
);
3294 nfs_fattr_init(fattr
);
3296 dprintk("NFS call lookup %s\n", name
->name
);
3297 status
= nfs4_call_sync(clnt
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
3298 dprintk("NFS reply lookup: %d\n", status
);
3302 static void nfs_fixup_secinfo_attributes(struct nfs_fattr
*fattr
)
3304 fattr
->valid
|= NFS_ATTR_FATTR_TYPE
| NFS_ATTR_FATTR_MODE
|
3305 NFS_ATTR_FATTR_NLINK
| NFS_ATTR_FATTR_MOUNTPOINT
;
3306 fattr
->mode
= S_IFDIR
| S_IRUGO
| S_IXUGO
;
3310 static int nfs4_proc_lookup_common(struct rpc_clnt
**clnt
, struct inode
*dir
,
3311 struct qstr
*name
, struct nfs_fh
*fhandle
,
3312 struct nfs_fattr
*fattr
, struct nfs4_label
*label
)
3314 struct nfs4_exception exception
= { };
3315 struct rpc_clnt
*client
= *clnt
;
3318 err
= _nfs4_proc_lookup(client
, dir
, name
, fhandle
, fattr
, label
);
3319 trace_nfs4_lookup(dir
, name
, err
);
3321 case -NFS4ERR_BADNAME
:
3324 case -NFS4ERR_MOVED
:
3325 err
= nfs4_get_referral(client
, dir
, name
, fattr
, fhandle
);
3327 case -NFS4ERR_WRONGSEC
:
3329 if (client
!= *clnt
)
3331 client
= nfs4_negotiate_security(client
, dir
, name
);
3333 return PTR_ERR(client
);
3335 exception
.retry
= 1;
3338 err
= nfs4_handle_exception(NFS_SERVER(dir
), err
, &exception
);
3340 } while (exception
.retry
);
3345 else if (client
!= *clnt
)
3346 rpc_shutdown_client(client
);
3351 static int nfs4_proc_lookup(struct inode
*dir
, struct qstr
*name
,
3352 struct nfs_fh
*fhandle
, struct nfs_fattr
*fattr
,
3353 struct nfs4_label
*label
)
3356 struct rpc_clnt
*client
= NFS_CLIENT(dir
);
3358 status
= nfs4_proc_lookup_common(&client
, dir
, name
, fhandle
, fattr
, label
);
3359 if (client
!= NFS_CLIENT(dir
)) {
3360 rpc_shutdown_client(client
);
3361 nfs_fixup_secinfo_attributes(fattr
);
3367 nfs4_proc_lookup_mountpoint(struct inode
*dir
, struct qstr
*name
,
3368 struct nfs_fh
*fhandle
, struct nfs_fattr
*fattr
)
3370 struct rpc_clnt
*client
= NFS_CLIENT(dir
);
3373 status
= nfs4_proc_lookup_common(&client
, dir
, name
, fhandle
, fattr
, NULL
);
3375 return ERR_PTR(status
);
3376 return (client
== NFS_CLIENT(dir
)) ? rpc_clone_client(client
) : client
;
3379 static int _nfs4_proc_access(struct inode
*inode
, struct nfs_access_entry
*entry
)
3381 struct nfs_server
*server
= NFS_SERVER(inode
);
3382 struct nfs4_accessargs args
= {
3383 .fh
= NFS_FH(inode
),
3384 .bitmask
= server
->cache_consistency_bitmask
,
3386 struct nfs4_accessres res
= {
3389 struct rpc_message msg
= {
3390 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_ACCESS
],
3393 .rpc_cred
= entry
->cred
,
3395 int mode
= entry
->mask
;
3399 * Determine which access bits we want to ask for...
3401 if (mode
& MAY_READ
)
3402 args
.access
|= NFS4_ACCESS_READ
;
3403 if (S_ISDIR(inode
->i_mode
)) {
3404 if (mode
& MAY_WRITE
)
3405 args
.access
|= NFS4_ACCESS_MODIFY
| NFS4_ACCESS_EXTEND
| NFS4_ACCESS_DELETE
;
3406 if (mode
& MAY_EXEC
)
3407 args
.access
|= NFS4_ACCESS_LOOKUP
;
3409 if (mode
& MAY_WRITE
)
3410 args
.access
|= NFS4_ACCESS_MODIFY
| NFS4_ACCESS_EXTEND
;
3411 if (mode
& MAY_EXEC
)
3412 args
.access
|= NFS4_ACCESS_EXECUTE
;
3415 res
.fattr
= nfs_alloc_fattr();
3416 if (res
.fattr
== NULL
)
3419 status
= nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
3421 nfs_access_set_mask(entry
, res
.access
);
3422 nfs_refresh_inode(inode
, res
.fattr
);
3424 nfs_free_fattr(res
.fattr
);
3428 static int nfs4_proc_access(struct inode
*inode
, struct nfs_access_entry
*entry
)
3430 struct nfs4_exception exception
= { };
3433 err
= _nfs4_proc_access(inode
, entry
);
3434 trace_nfs4_access(inode
, err
);
3435 err
= nfs4_handle_exception(NFS_SERVER(inode
), err
,
3437 } while (exception
.retry
);
3442 * TODO: For the time being, we don't try to get any attributes
3443 * along with any of the zero-copy operations READ, READDIR,
3446 * In the case of the first three, we want to put the GETATTR
3447 * after the read-type operation -- this is because it is hard
3448 * to predict the length of a GETATTR response in v4, and thus
3449 * align the READ data correctly. This means that the GETATTR
3450 * may end up partially falling into the page cache, and we should
3451 * shift it into the 'tail' of the xdr_buf before processing.
3452 * To do this efficiently, we need to know the total length
3453 * of data received, which doesn't seem to be available outside
3456 * In the case of WRITE, we also want to put the GETATTR after
3457 * the operation -- in this case because we want to make sure
3458 * we get the post-operation mtime and size.
3460 * Both of these changes to the XDR layer would in fact be quite
3461 * minor, but I decided to leave them for a subsequent patch.
3463 static int _nfs4_proc_readlink(struct inode
*inode
, struct page
*page
,
3464 unsigned int pgbase
, unsigned int pglen
)
3466 struct nfs4_readlink args
= {
3467 .fh
= NFS_FH(inode
),
3472 struct nfs4_readlink_res res
;
3473 struct rpc_message msg
= {
3474 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_READLINK
],
3479 return nfs4_call_sync(NFS_SERVER(inode
)->client
, NFS_SERVER(inode
), &msg
, &args
.seq_args
, &res
.seq_res
, 0);
3482 static int nfs4_proc_readlink(struct inode
*inode
, struct page
*page
,
3483 unsigned int pgbase
, unsigned int pglen
)
3485 struct nfs4_exception exception
= { };
3488 err
= _nfs4_proc_readlink(inode
, page
, pgbase
, pglen
);
3489 trace_nfs4_readlink(inode
, err
);
3490 err
= nfs4_handle_exception(NFS_SERVER(inode
), err
,
3492 } while (exception
.retry
);
3497 * This is just for mknod. open(O_CREAT) will always do ->open_context().
3500 nfs4_proc_create(struct inode
*dir
, struct dentry
*dentry
, struct iattr
*sattr
,
3503 struct nfs4_label l
, *ilabel
= NULL
;
3504 struct nfs_open_context
*ctx
;
3505 struct nfs4_state
*state
;
3509 ctx
= alloc_nfs_open_context(dentry
, FMODE_READ
);
3511 return PTR_ERR(ctx
);
3513 ilabel
= nfs4_label_init_security(dir
, dentry
, sattr
, &l
);
3515 sattr
->ia_mode
&= ~current_umask();
3516 state
= nfs4_do_open(dir
, ctx
, flags
, sattr
, ilabel
, &opened
);
3517 if (IS_ERR(state
)) {
3518 status
= PTR_ERR(state
);
3522 nfs4_label_release_security(ilabel
);
3523 put_nfs_open_context(ctx
);
3527 static int _nfs4_proc_remove(struct inode
*dir
, struct qstr
*name
)
3529 struct nfs_server
*server
= NFS_SERVER(dir
);
3530 struct nfs_removeargs args
= {
3534 struct nfs_removeres res
= {
3537 struct rpc_message msg
= {
3538 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_REMOVE
],
3544 status
= nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 1);
3546 update_changeattr(dir
, &res
.cinfo
);
3550 static int nfs4_proc_remove(struct inode
*dir
, struct qstr
*name
)
3552 struct nfs4_exception exception
= { };
3555 err
= _nfs4_proc_remove(dir
, name
);
3556 trace_nfs4_remove(dir
, name
, err
);
3557 err
= nfs4_handle_exception(NFS_SERVER(dir
), err
,
3559 } while (exception
.retry
);
3563 static void nfs4_proc_unlink_setup(struct rpc_message
*msg
, struct inode
*dir
)
3565 struct nfs_server
*server
= NFS_SERVER(dir
);
3566 struct nfs_removeargs
*args
= msg
->rpc_argp
;
3567 struct nfs_removeres
*res
= msg
->rpc_resp
;
3569 res
->server
= server
;
3570 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_REMOVE
];
3571 nfs4_init_sequence(&args
->seq_args
, &res
->seq_res
, 1);
3573 nfs_fattr_init(res
->dir_attr
);
3576 static void nfs4_proc_unlink_rpc_prepare(struct rpc_task
*task
, struct nfs_unlinkdata
*data
)
3578 nfs4_setup_sequence(NFS_SERVER(data
->dir
),
3579 &data
->args
.seq_args
,
3584 static int nfs4_proc_unlink_done(struct rpc_task
*task
, struct inode
*dir
)
3586 struct nfs_unlinkdata
*data
= task
->tk_calldata
;
3587 struct nfs_removeres
*res
= &data
->res
;
3589 if (!nfs4_sequence_done(task
, &res
->seq_res
))
3591 if (nfs4_async_handle_error(task
, res
->server
, NULL
,
3592 &data
->timeout
) == -EAGAIN
)
3594 update_changeattr(dir
, &res
->cinfo
);
3598 static void nfs4_proc_rename_setup(struct rpc_message
*msg
, struct inode
*dir
)
3600 struct nfs_server
*server
= NFS_SERVER(dir
);
3601 struct nfs_renameargs
*arg
= msg
->rpc_argp
;
3602 struct nfs_renameres
*res
= msg
->rpc_resp
;
3604 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RENAME
];
3605 res
->server
= server
;
3606 nfs4_init_sequence(&arg
->seq_args
, &res
->seq_res
, 1);
3609 static void nfs4_proc_rename_rpc_prepare(struct rpc_task
*task
, struct nfs_renamedata
*data
)
3611 nfs4_setup_sequence(NFS_SERVER(data
->old_dir
),
3612 &data
->args
.seq_args
,
3617 static int nfs4_proc_rename_done(struct rpc_task
*task
, struct inode
*old_dir
,
3618 struct inode
*new_dir
)
3620 struct nfs_renamedata
*data
= task
->tk_calldata
;
3621 struct nfs_renameres
*res
= &data
->res
;
3623 if (!nfs4_sequence_done(task
, &res
->seq_res
))
3625 if (nfs4_async_handle_error(task
, res
->server
, NULL
, &data
->timeout
) == -EAGAIN
)
3628 update_changeattr(old_dir
, &res
->old_cinfo
);
3629 update_changeattr(new_dir
, &res
->new_cinfo
);
3633 static int _nfs4_proc_link(struct inode
*inode
, struct inode
*dir
, struct qstr
*name
)
3635 struct nfs_server
*server
= NFS_SERVER(inode
);
3636 struct nfs4_link_arg arg
= {
3637 .fh
= NFS_FH(inode
),
3638 .dir_fh
= NFS_FH(dir
),
3640 .bitmask
= server
->attr_bitmask
,
3642 struct nfs4_link_res res
= {
3646 struct rpc_message msg
= {
3647 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LINK
],
3651 int status
= -ENOMEM
;
3653 res
.fattr
= nfs_alloc_fattr();
3654 if (res
.fattr
== NULL
)
3657 res
.label
= nfs4_label_alloc(server
, GFP_KERNEL
);
3658 if (IS_ERR(res
.label
)) {
3659 status
= PTR_ERR(res
.label
);
3662 arg
.bitmask
= nfs4_bitmask(server
, res
.label
);
3664 status
= nfs4_call_sync(server
->client
, server
, &msg
, &arg
.seq_args
, &res
.seq_res
, 1);
3666 update_changeattr(dir
, &res
.cinfo
);
3667 status
= nfs_post_op_update_inode(inode
, res
.fattr
);
3669 nfs_setsecurity(inode
, res
.fattr
, res
.label
);
3673 nfs4_label_free(res
.label
);
3676 nfs_free_fattr(res
.fattr
);
3680 static int nfs4_proc_link(struct inode
*inode
, struct inode
*dir
, struct qstr
*name
)
3682 struct nfs4_exception exception
= { };
3685 err
= nfs4_handle_exception(NFS_SERVER(inode
),
3686 _nfs4_proc_link(inode
, dir
, name
),
3688 } while (exception
.retry
);
3692 struct nfs4_createdata
{
3693 struct rpc_message msg
;
3694 struct nfs4_create_arg arg
;
3695 struct nfs4_create_res res
;
3697 struct nfs_fattr fattr
;
3698 struct nfs4_label
*label
;
3701 static struct nfs4_createdata
*nfs4_alloc_createdata(struct inode
*dir
,
3702 struct qstr
*name
, struct iattr
*sattr
, u32 ftype
)
3704 struct nfs4_createdata
*data
;
3706 data
= kzalloc(sizeof(*data
), GFP_KERNEL
);
3708 struct nfs_server
*server
= NFS_SERVER(dir
);
3710 data
->label
= nfs4_label_alloc(server
, GFP_KERNEL
);
3711 if (IS_ERR(data
->label
))
3714 data
->msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_CREATE
];
3715 data
->msg
.rpc_argp
= &data
->arg
;
3716 data
->msg
.rpc_resp
= &data
->res
;
3717 data
->arg
.dir_fh
= NFS_FH(dir
);
3718 data
->arg
.server
= server
;
3719 data
->arg
.name
= name
;
3720 data
->arg
.attrs
= sattr
;
3721 data
->arg
.ftype
= ftype
;
3722 data
->arg
.bitmask
= nfs4_bitmask(server
, data
->label
);
3723 data
->res
.server
= server
;
3724 data
->res
.fh
= &data
->fh
;
3725 data
->res
.fattr
= &data
->fattr
;
3726 data
->res
.label
= data
->label
;
3727 nfs_fattr_init(data
->res
.fattr
);
3735 static int nfs4_do_create(struct inode
*dir
, struct dentry
*dentry
, struct nfs4_createdata
*data
)
3737 int status
= nfs4_call_sync(NFS_SERVER(dir
)->client
, NFS_SERVER(dir
), &data
->msg
,
3738 &data
->arg
.seq_args
, &data
->res
.seq_res
, 1);
3740 update_changeattr(dir
, &data
->res
.dir_cinfo
);
3741 status
= nfs_instantiate(dentry
, data
->res
.fh
, data
->res
.fattr
, data
->res
.label
);
3746 static void nfs4_free_createdata(struct nfs4_createdata
*data
)
3748 nfs4_label_free(data
->label
);
3752 static int _nfs4_proc_symlink(struct inode
*dir
, struct dentry
*dentry
,
3753 struct page
*page
, unsigned int len
, struct iattr
*sattr
,
3754 struct nfs4_label
*label
)
3756 struct nfs4_createdata
*data
;
3757 int status
= -ENAMETOOLONG
;
3759 if (len
> NFS4_MAXPATHLEN
)
3763 data
= nfs4_alloc_createdata(dir
, &dentry
->d_name
, sattr
, NF4LNK
);
3767 data
->msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SYMLINK
];
3768 data
->arg
.u
.symlink
.pages
= &page
;
3769 data
->arg
.u
.symlink
.len
= len
;
3770 data
->arg
.label
= label
;
3772 status
= nfs4_do_create(dir
, dentry
, data
);
3774 nfs4_free_createdata(data
);
3779 static int nfs4_proc_symlink(struct inode
*dir
, struct dentry
*dentry
,
3780 struct page
*page
, unsigned int len
, struct iattr
*sattr
)
3782 struct nfs4_exception exception
= { };
3783 struct nfs4_label l
, *label
= NULL
;
3786 label
= nfs4_label_init_security(dir
, dentry
, sattr
, &l
);
3789 err
= _nfs4_proc_symlink(dir
, dentry
, page
, len
, sattr
, label
);
3790 trace_nfs4_symlink(dir
, &dentry
->d_name
, err
);
3791 err
= nfs4_handle_exception(NFS_SERVER(dir
), err
,
3793 } while (exception
.retry
);
3795 nfs4_label_release_security(label
);
3799 static int _nfs4_proc_mkdir(struct inode
*dir
, struct dentry
*dentry
,
3800 struct iattr
*sattr
, struct nfs4_label
*label
)
3802 struct nfs4_createdata
*data
;
3803 int status
= -ENOMEM
;
3805 data
= nfs4_alloc_createdata(dir
, &dentry
->d_name
, sattr
, NF4DIR
);
3809 data
->arg
.label
= label
;
3810 status
= nfs4_do_create(dir
, dentry
, data
);
3812 nfs4_free_createdata(data
);
3817 static int nfs4_proc_mkdir(struct inode
*dir
, struct dentry
*dentry
,
3818 struct iattr
*sattr
)
3820 struct nfs4_exception exception
= { };
3821 struct nfs4_label l
, *label
= NULL
;
3824 label
= nfs4_label_init_security(dir
, dentry
, sattr
, &l
);
3826 sattr
->ia_mode
&= ~current_umask();
3828 err
= _nfs4_proc_mkdir(dir
, dentry
, sattr
, label
);
3829 trace_nfs4_mkdir(dir
, &dentry
->d_name
, err
);
3830 err
= nfs4_handle_exception(NFS_SERVER(dir
), err
,
3832 } while (exception
.retry
);
3833 nfs4_label_release_security(label
);
3838 static int _nfs4_proc_readdir(struct dentry
*dentry
, struct rpc_cred
*cred
,
3839 u64 cookie
, struct page
**pages
, unsigned int count
, int plus
)
3841 struct inode
*dir
= dentry
->d_inode
;
3842 struct nfs4_readdir_arg args
= {
3847 .bitmask
= NFS_SERVER(dentry
->d_inode
)->attr_bitmask
,
3850 struct nfs4_readdir_res res
;
3851 struct rpc_message msg
= {
3852 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_READDIR
],
3859 dprintk("%s: dentry = %pd2, cookie = %Lu\n", __func__
,
3861 (unsigned long long)cookie
);
3862 nfs4_setup_readdir(cookie
, NFS_I(dir
)->cookieverf
, dentry
, &args
);
3863 res
.pgbase
= args
.pgbase
;
3864 status
= nfs4_call_sync(NFS_SERVER(dir
)->client
, NFS_SERVER(dir
), &msg
, &args
.seq_args
, &res
.seq_res
, 0);
3866 memcpy(NFS_I(dir
)->cookieverf
, res
.verifier
.data
, NFS4_VERIFIER_SIZE
);
3867 status
+= args
.pgbase
;
3870 nfs_invalidate_atime(dir
);
3872 dprintk("%s: returns %d\n", __func__
, status
);
3876 static int nfs4_proc_readdir(struct dentry
*dentry
, struct rpc_cred
*cred
,
3877 u64 cookie
, struct page
**pages
, unsigned int count
, int plus
)
3879 struct nfs4_exception exception
= { };
3882 err
= _nfs4_proc_readdir(dentry
, cred
, cookie
,
3883 pages
, count
, plus
);
3884 trace_nfs4_readdir(dentry
->d_inode
, err
);
3885 err
= nfs4_handle_exception(NFS_SERVER(dentry
->d_inode
), err
,
3887 } while (exception
.retry
);
3891 static int _nfs4_proc_mknod(struct inode
*dir
, struct dentry
*dentry
,
3892 struct iattr
*sattr
, struct nfs4_label
*label
, dev_t rdev
)
3894 struct nfs4_createdata
*data
;
3895 int mode
= sattr
->ia_mode
;
3896 int status
= -ENOMEM
;
3898 data
= nfs4_alloc_createdata(dir
, &dentry
->d_name
, sattr
, NF4SOCK
);
3903 data
->arg
.ftype
= NF4FIFO
;
3904 else if (S_ISBLK(mode
)) {
3905 data
->arg
.ftype
= NF4BLK
;
3906 data
->arg
.u
.device
.specdata1
= MAJOR(rdev
);
3907 data
->arg
.u
.device
.specdata2
= MINOR(rdev
);
3909 else if (S_ISCHR(mode
)) {
3910 data
->arg
.ftype
= NF4CHR
;
3911 data
->arg
.u
.device
.specdata1
= MAJOR(rdev
);
3912 data
->arg
.u
.device
.specdata2
= MINOR(rdev
);
3913 } else if (!S_ISSOCK(mode
)) {
3918 data
->arg
.label
= label
;
3919 status
= nfs4_do_create(dir
, dentry
, data
);
3921 nfs4_free_createdata(data
);
3926 static int nfs4_proc_mknod(struct inode
*dir
, struct dentry
*dentry
,
3927 struct iattr
*sattr
, dev_t rdev
)
3929 struct nfs4_exception exception
= { };
3930 struct nfs4_label l
, *label
= NULL
;
3933 label
= nfs4_label_init_security(dir
, dentry
, sattr
, &l
);
3935 sattr
->ia_mode
&= ~current_umask();
3937 err
= _nfs4_proc_mknod(dir
, dentry
, sattr
, label
, rdev
);
3938 trace_nfs4_mknod(dir
, &dentry
->d_name
, err
);
3939 err
= nfs4_handle_exception(NFS_SERVER(dir
), err
,
3941 } while (exception
.retry
);
3943 nfs4_label_release_security(label
);
3948 static int _nfs4_proc_statfs(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
3949 struct nfs_fsstat
*fsstat
)
3951 struct nfs4_statfs_arg args
= {
3953 .bitmask
= server
->attr_bitmask
,
3955 struct nfs4_statfs_res res
= {
3958 struct rpc_message msg
= {
3959 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_STATFS
],
3964 nfs_fattr_init(fsstat
->fattr
);
3965 return nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
3968 static int nfs4_proc_statfs(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fsstat
*fsstat
)
3970 struct nfs4_exception exception
= { };
3973 err
= nfs4_handle_exception(server
,
3974 _nfs4_proc_statfs(server
, fhandle
, fsstat
),
3976 } while (exception
.retry
);
3980 static int _nfs4_do_fsinfo(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
3981 struct nfs_fsinfo
*fsinfo
)
3983 struct nfs4_fsinfo_arg args
= {
3985 .bitmask
= server
->attr_bitmask
,
3987 struct nfs4_fsinfo_res res
= {
3990 struct rpc_message msg
= {
3991 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_FSINFO
],
3996 return nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
3999 static int nfs4_do_fsinfo(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fsinfo
*fsinfo
)
4001 struct nfs4_exception exception
= { };
4002 unsigned long now
= jiffies
;
4006 err
= _nfs4_do_fsinfo(server
, fhandle
, fsinfo
);
4007 trace_nfs4_fsinfo(server
, fhandle
, fsinfo
->fattr
, err
);
4009 struct nfs_client
*clp
= server
->nfs_client
;
4011 spin_lock(&clp
->cl_lock
);
4012 clp
->cl_lease_time
= fsinfo
->lease_time
* HZ
;
4013 clp
->cl_last_renewal
= now
;
4014 spin_unlock(&clp
->cl_lock
);
4017 err
= nfs4_handle_exception(server
, err
, &exception
);
4018 } while (exception
.retry
);
4022 static int nfs4_proc_fsinfo(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fsinfo
*fsinfo
)
4026 nfs_fattr_init(fsinfo
->fattr
);
4027 error
= nfs4_do_fsinfo(server
, fhandle
, fsinfo
);
4029 /* block layout checks this! */
4030 server
->pnfs_blksize
= fsinfo
->blksize
;
4031 set_pnfs_layoutdriver(server
, fhandle
, fsinfo
->layouttype
);
4037 static int _nfs4_proc_pathconf(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
4038 struct nfs_pathconf
*pathconf
)
4040 struct nfs4_pathconf_arg args
= {
4042 .bitmask
= server
->attr_bitmask
,
4044 struct nfs4_pathconf_res res
= {
4045 .pathconf
= pathconf
,
4047 struct rpc_message msg
= {
4048 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_PATHCONF
],
4053 /* None of the pathconf attributes are mandatory to implement */
4054 if ((args
.bitmask
[0] & nfs4_pathconf_bitmap
[0]) == 0) {
4055 memset(pathconf
, 0, sizeof(*pathconf
));
4059 nfs_fattr_init(pathconf
->fattr
);
4060 return nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
4063 static int nfs4_proc_pathconf(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
4064 struct nfs_pathconf
*pathconf
)
4066 struct nfs4_exception exception
= { };
4070 err
= nfs4_handle_exception(server
,
4071 _nfs4_proc_pathconf(server
, fhandle
, pathconf
),
4073 } while (exception
.retry
);
4077 int nfs4_set_rw_stateid(nfs4_stateid
*stateid
,
4078 const struct nfs_open_context
*ctx
,
4079 const struct nfs_lock_context
*l_ctx
,
4082 const struct nfs_lockowner
*lockowner
= NULL
;
4085 lockowner
= &l_ctx
->lockowner
;
4086 return nfs4_select_rw_stateid(stateid
, ctx
->state
, fmode
, lockowner
);
4088 EXPORT_SYMBOL_GPL(nfs4_set_rw_stateid
);
4090 static bool nfs4_stateid_is_current(nfs4_stateid
*stateid
,
4091 const struct nfs_open_context
*ctx
,
4092 const struct nfs_lock_context
*l_ctx
,
4095 nfs4_stateid current_stateid
;
4097 /* If the current stateid represents a lost lock, then exit */
4098 if (nfs4_set_rw_stateid(¤t_stateid
, ctx
, l_ctx
, fmode
) == -EIO
)
4100 return nfs4_stateid_match(stateid
, ¤t_stateid
);
4103 static bool nfs4_error_stateid_expired(int err
)
4106 case -NFS4ERR_DELEG_REVOKED
:
4107 case -NFS4ERR_ADMIN_REVOKED
:
4108 case -NFS4ERR_BAD_STATEID
:
4109 case -NFS4ERR_STALE_STATEID
:
4110 case -NFS4ERR_OLD_STATEID
:
4111 case -NFS4ERR_OPENMODE
:
4112 case -NFS4ERR_EXPIRED
:
4118 void __nfs4_read_done_cb(struct nfs_pgio_header
*hdr
)
4120 nfs_invalidate_atime(hdr
->inode
);
4123 static int nfs4_read_done_cb(struct rpc_task
*task
, struct nfs_pgio_header
*hdr
)
4125 struct nfs_server
*server
= NFS_SERVER(hdr
->inode
);
4127 trace_nfs4_read(hdr
, task
->tk_status
);
4128 if (nfs4_async_handle_error(task
, server
,
4129 hdr
->args
.context
->state
,
4131 rpc_restart_call_prepare(task
);
4135 __nfs4_read_done_cb(hdr
);
4136 if (task
->tk_status
> 0)
4137 renew_lease(server
, hdr
->timestamp
);
4141 static bool nfs4_read_stateid_changed(struct rpc_task
*task
,
4142 struct nfs_pgio_args
*args
)
4145 if (!nfs4_error_stateid_expired(task
->tk_status
) ||
4146 nfs4_stateid_is_current(&args
->stateid
,
4151 rpc_restart_call_prepare(task
);
4155 static int nfs4_read_done(struct rpc_task
*task
, struct nfs_pgio_header
*hdr
)
4158 dprintk("--> %s\n", __func__
);
4160 if (!nfs4_sequence_done(task
, &hdr
->res
.seq_res
))
4162 if (nfs4_read_stateid_changed(task
, &hdr
->args
))
4164 return hdr
->pgio_done_cb
? hdr
->pgio_done_cb(task
, hdr
) :
4165 nfs4_read_done_cb(task
, hdr
);
4168 static void nfs4_proc_read_setup(struct nfs_pgio_header
*hdr
,
4169 struct rpc_message
*msg
)
4171 hdr
->timestamp
= jiffies
;
4172 hdr
->pgio_done_cb
= nfs4_read_done_cb
;
4173 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_READ
];
4174 nfs4_init_sequence(&hdr
->args
.seq_args
, &hdr
->res
.seq_res
, 0);
4177 static int nfs4_proc_pgio_rpc_prepare(struct rpc_task
*task
,
4178 struct nfs_pgio_header
*hdr
)
4180 if (nfs4_setup_sequence(NFS_SERVER(hdr
->inode
),
4181 &hdr
->args
.seq_args
,
4185 if (nfs4_set_rw_stateid(&hdr
->args
.stateid
, hdr
->args
.context
,
4186 hdr
->args
.lock_context
,
4187 hdr
->rw_ops
->rw_mode
) == -EIO
)
4189 if (unlikely(test_bit(NFS_CONTEXT_BAD
, &hdr
->args
.context
->flags
)))
4194 static int nfs4_write_done_cb(struct rpc_task
*task
,
4195 struct nfs_pgio_header
*hdr
)
4197 struct inode
*inode
= hdr
->inode
;
4199 trace_nfs4_write(hdr
, task
->tk_status
);
4200 if (nfs4_async_handle_error(task
, NFS_SERVER(inode
),
4201 hdr
->args
.context
->state
,
4203 rpc_restart_call_prepare(task
);
4206 if (task
->tk_status
>= 0) {
4207 renew_lease(NFS_SERVER(inode
), hdr
->timestamp
);
4208 nfs_post_op_update_inode_force_wcc(inode
, &hdr
->fattr
);
4213 static bool nfs4_write_stateid_changed(struct rpc_task
*task
,
4214 struct nfs_pgio_args
*args
)
4217 if (!nfs4_error_stateid_expired(task
->tk_status
) ||
4218 nfs4_stateid_is_current(&args
->stateid
,
4223 rpc_restart_call_prepare(task
);
4227 static int nfs4_write_done(struct rpc_task
*task
, struct nfs_pgio_header
*hdr
)
4229 if (!nfs4_sequence_done(task
, &hdr
->res
.seq_res
))
4231 if (nfs4_write_stateid_changed(task
, &hdr
->args
))
4233 return hdr
->pgio_done_cb
? hdr
->pgio_done_cb(task
, hdr
) :
4234 nfs4_write_done_cb(task
, hdr
);
4238 bool nfs4_write_need_cache_consistency_data(struct nfs_pgio_header
*hdr
)
4240 /* Don't request attributes for pNFS or O_DIRECT writes */
4241 if (hdr
->ds_clp
!= NULL
|| hdr
->dreq
!= NULL
)
4243 /* Otherwise, request attributes if and only if we don't hold
4246 return nfs4_have_delegation(hdr
->inode
, FMODE_READ
) == 0;
4249 static void nfs4_proc_write_setup(struct nfs_pgio_header
*hdr
,
4250 struct rpc_message
*msg
)
4252 struct nfs_server
*server
= NFS_SERVER(hdr
->inode
);
4254 if (!nfs4_write_need_cache_consistency_data(hdr
)) {
4255 hdr
->args
.bitmask
= NULL
;
4256 hdr
->res
.fattr
= NULL
;
4258 hdr
->args
.bitmask
= server
->cache_consistency_bitmask
;
4260 if (!hdr
->pgio_done_cb
)
4261 hdr
->pgio_done_cb
= nfs4_write_done_cb
;
4262 hdr
->res
.server
= server
;
4263 hdr
->timestamp
= jiffies
;
4265 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_WRITE
];
4266 nfs4_init_sequence(&hdr
->args
.seq_args
, &hdr
->res
.seq_res
, 1);
4269 static void nfs4_proc_commit_rpc_prepare(struct rpc_task
*task
, struct nfs_commit_data
*data
)
4271 nfs4_setup_sequence(NFS_SERVER(data
->inode
),
4272 &data
->args
.seq_args
,
4277 static int nfs4_commit_done_cb(struct rpc_task
*task
, struct nfs_commit_data
*data
)
4279 struct inode
*inode
= data
->inode
;
4281 trace_nfs4_commit(data
, task
->tk_status
);
4282 if (nfs4_async_handle_error(task
, NFS_SERVER(inode
),
4283 NULL
, NULL
) == -EAGAIN
) {
4284 rpc_restart_call_prepare(task
);
4290 static int nfs4_commit_done(struct rpc_task
*task
, struct nfs_commit_data
*data
)
4292 if (!nfs4_sequence_done(task
, &data
->res
.seq_res
))
4294 return data
->commit_done_cb(task
, data
);
4297 static void nfs4_proc_commit_setup(struct nfs_commit_data
*data
, struct rpc_message
*msg
)
4299 struct nfs_server
*server
= NFS_SERVER(data
->inode
);
4301 if (data
->commit_done_cb
== NULL
)
4302 data
->commit_done_cb
= nfs4_commit_done_cb
;
4303 data
->res
.server
= server
;
4304 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_COMMIT
];
4305 nfs4_init_sequence(&data
->args
.seq_args
, &data
->res
.seq_res
, 1);
4308 struct nfs4_renewdata
{
4309 struct nfs_client
*client
;
4310 unsigned long timestamp
;
4314 * nfs4_proc_async_renew(): This is not one of the nfs_rpc_ops; it is a special
4315 * standalone procedure for queueing an asynchronous RENEW.
4317 static void nfs4_renew_release(void *calldata
)
4319 struct nfs4_renewdata
*data
= calldata
;
4320 struct nfs_client
*clp
= data
->client
;
4322 if (atomic_read(&clp
->cl_count
) > 1)
4323 nfs4_schedule_state_renewal(clp
);
4324 nfs_put_client(clp
);
4328 static void nfs4_renew_done(struct rpc_task
*task
, void *calldata
)
4330 struct nfs4_renewdata
*data
= calldata
;
4331 struct nfs_client
*clp
= data
->client
;
4332 unsigned long timestamp
= data
->timestamp
;
4334 trace_nfs4_renew_async(clp
, task
->tk_status
);
4335 switch (task
->tk_status
) {
4338 case -NFS4ERR_LEASE_MOVED
:
4339 nfs4_schedule_lease_moved_recovery(clp
);
4342 /* Unless we're shutting down, schedule state recovery! */
4343 if (test_bit(NFS_CS_RENEWD
, &clp
->cl_res_state
) == 0)
4345 if (task
->tk_status
!= NFS4ERR_CB_PATH_DOWN
) {
4346 nfs4_schedule_lease_recovery(clp
);
4349 nfs4_schedule_path_down_recovery(clp
);
4351 do_renew_lease(clp
, timestamp
);
4354 static const struct rpc_call_ops nfs4_renew_ops
= {
4355 .rpc_call_done
= nfs4_renew_done
,
4356 .rpc_release
= nfs4_renew_release
,
4359 static int nfs4_proc_async_renew(struct nfs_client
*clp
, struct rpc_cred
*cred
, unsigned renew_flags
)
4361 struct rpc_message msg
= {
4362 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RENEW
],
4366 struct nfs4_renewdata
*data
;
4368 if (renew_flags
== 0)
4370 if (!atomic_inc_not_zero(&clp
->cl_count
))
4372 data
= kmalloc(sizeof(*data
), GFP_NOFS
);
4376 data
->timestamp
= jiffies
;
4377 return rpc_call_async(clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
,
4378 &nfs4_renew_ops
, data
);
4381 static int nfs4_proc_renew(struct nfs_client
*clp
, struct rpc_cred
*cred
)
4383 struct rpc_message msg
= {
4384 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RENEW
],
4388 unsigned long now
= jiffies
;
4391 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
4394 do_renew_lease(clp
, now
);
4398 static inline int nfs4_server_supports_acls(struct nfs_server
*server
)
4400 return server
->caps
& NFS_CAP_ACLS
;
4403 /* Assuming that XATTR_SIZE_MAX is a multiple of PAGE_SIZE, and that
4404 * it's OK to put sizeof(void) * (XATTR_SIZE_MAX/PAGE_SIZE) bytes on
4407 #define NFS4ACL_MAXPAGES DIV_ROUND_UP(XATTR_SIZE_MAX, PAGE_SIZE)
4409 static int buf_to_pages_noslab(const void *buf
, size_t buflen
,
4410 struct page
**pages
, unsigned int *pgbase
)
4412 struct page
*newpage
, **spages
;
4418 len
= min_t(size_t, PAGE_SIZE
, buflen
);
4419 newpage
= alloc_page(GFP_KERNEL
);
4421 if (newpage
== NULL
)
4423 memcpy(page_address(newpage
), buf
, len
);
4428 } while (buflen
!= 0);
4434 __free_page(spages
[rc
-1]);
4438 struct nfs4_cached_acl
{
4444 static void nfs4_set_cached_acl(struct inode
*inode
, struct nfs4_cached_acl
*acl
)
4446 struct nfs_inode
*nfsi
= NFS_I(inode
);
4448 spin_lock(&inode
->i_lock
);
4449 kfree(nfsi
->nfs4_acl
);
4450 nfsi
->nfs4_acl
= acl
;
4451 spin_unlock(&inode
->i_lock
);
4454 static void nfs4_zap_acl_attr(struct inode
*inode
)
4456 nfs4_set_cached_acl(inode
, NULL
);
4459 static inline ssize_t
nfs4_read_cached_acl(struct inode
*inode
, char *buf
, size_t buflen
)
4461 struct nfs_inode
*nfsi
= NFS_I(inode
);
4462 struct nfs4_cached_acl
*acl
;
4465 spin_lock(&inode
->i_lock
);
4466 acl
= nfsi
->nfs4_acl
;
4469 if (buf
== NULL
) /* user is just asking for length */
4471 if (acl
->cached
== 0)
4473 ret
= -ERANGE
; /* see getxattr(2) man page */
4474 if (acl
->len
> buflen
)
4476 memcpy(buf
, acl
->data
, acl
->len
);
4480 spin_unlock(&inode
->i_lock
);
4484 static void nfs4_write_cached_acl(struct inode
*inode
, struct page
**pages
, size_t pgbase
, size_t acl_len
)
4486 struct nfs4_cached_acl
*acl
;
4487 size_t buflen
= sizeof(*acl
) + acl_len
;
4489 if (buflen
<= PAGE_SIZE
) {
4490 acl
= kmalloc(buflen
, GFP_KERNEL
);
4494 _copy_from_pages(acl
->data
, pages
, pgbase
, acl_len
);
4496 acl
= kmalloc(sizeof(*acl
), GFP_KERNEL
);
4503 nfs4_set_cached_acl(inode
, acl
);
4507 * The getxattr API returns the required buffer length when called with a
4508 * NULL buf. The NFSv4 acl tool then calls getxattr again after allocating
4509 * the required buf. On a NULL buf, we send a page of data to the server
4510 * guessing that the ACL request can be serviced by a page. If so, we cache
4511 * up to the page of ACL data, and the 2nd call to getxattr is serviced by
4512 * the cache. If not so, we throw away the page, and cache the required
4513 * length. The next getxattr call will then produce another round trip to
4514 * the server, this time with the input buf of the required size.
4516 static ssize_t
__nfs4_get_acl_uncached(struct inode
*inode
, void *buf
, size_t buflen
)
4518 struct page
*pages
[NFS4ACL_MAXPAGES
] = {NULL
, };
4519 struct nfs_getaclargs args
= {
4520 .fh
= NFS_FH(inode
),
4524 struct nfs_getaclres res
= {
4527 struct rpc_message msg
= {
4528 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GETACL
],
4532 unsigned int npages
= DIV_ROUND_UP(buflen
, PAGE_SIZE
);
4533 int ret
= -ENOMEM
, i
;
4535 /* As long as we're doing a round trip to the server anyway,
4536 * let's be prepared for a page of acl data. */
4539 if (npages
> ARRAY_SIZE(pages
))
4542 for (i
= 0; i
< npages
; i
++) {
4543 pages
[i
] = alloc_page(GFP_KERNEL
);
4548 /* for decoding across pages */
4549 res
.acl_scratch
= alloc_page(GFP_KERNEL
);
4550 if (!res
.acl_scratch
)
4553 args
.acl_len
= npages
* PAGE_SIZE
;
4554 args
.acl_pgbase
= 0;
4556 dprintk("%s buf %p buflen %zu npages %d args.acl_len %zu\n",
4557 __func__
, buf
, buflen
, npages
, args
.acl_len
);
4558 ret
= nfs4_call_sync(NFS_SERVER(inode
)->client
, NFS_SERVER(inode
),
4559 &msg
, &args
.seq_args
, &res
.seq_res
, 0);
4563 /* Handle the case where the passed-in buffer is too short */
4564 if (res
.acl_flags
& NFS4_ACL_TRUNC
) {
4565 /* Did the user only issue a request for the acl length? */
4571 nfs4_write_cached_acl(inode
, pages
, res
.acl_data_offset
, res
.acl_len
);
4573 if (res
.acl_len
> buflen
) {
4577 _copy_from_pages(buf
, pages
, res
.acl_data_offset
, res
.acl_len
);
4582 for (i
= 0; i
< npages
; i
++)
4584 __free_page(pages
[i
]);
4585 if (res
.acl_scratch
)
4586 __free_page(res
.acl_scratch
);
4590 static ssize_t
nfs4_get_acl_uncached(struct inode
*inode
, void *buf
, size_t buflen
)
4592 struct nfs4_exception exception
= { };
4595 ret
= __nfs4_get_acl_uncached(inode
, buf
, buflen
);
4596 trace_nfs4_get_acl(inode
, ret
);
4599 ret
= nfs4_handle_exception(NFS_SERVER(inode
), ret
, &exception
);
4600 } while (exception
.retry
);
4604 static ssize_t
nfs4_proc_get_acl(struct inode
*inode
, void *buf
, size_t buflen
)
4606 struct nfs_server
*server
= NFS_SERVER(inode
);
4609 if (!nfs4_server_supports_acls(server
))
4611 ret
= nfs_revalidate_inode(server
, inode
);
4614 if (NFS_I(inode
)->cache_validity
& NFS_INO_INVALID_ACL
)
4615 nfs_zap_acl_cache(inode
);
4616 ret
= nfs4_read_cached_acl(inode
, buf
, buflen
);
4618 /* -ENOENT is returned if there is no ACL or if there is an ACL
4619 * but no cached acl data, just the acl length */
4621 return nfs4_get_acl_uncached(inode
, buf
, buflen
);
4624 static int __nfs4_proc_set_acl(struct inode
*inode
, const void *buf
, size_t buflen
)
4626 struct nfs_server
*server
= NFS_SERVER(inode
);
4627 struct page
*pages
[NFS4ACL_MAXPAGES
];
4628 struct nfs_setaclargs arg
= {
4629 .fh
= NFS_FH(inode
),
4633 struct nfs_setaclres res
;
4634 struct rpc_message msg
= {
4635 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETACL
],
4639 unsigned int npages
= DIV_ROUND_UP(buflen
, PAGE_SIZE
);
4642 if (!nfs4_server_supports_acls(server
))
4644 if (npages
> ARRAY_SIZE(pages
))
4646 i
= buf_to_pages_noslab(buf
, buflen
, arg
.acl_pages
, &arg
.acl_pgbase
);
4649 nfs4_inode_return_delegation(inode
);
4650 ret
= nfs4_call_sync(server
->client
, server
, &msg
, &arg
.seq_args
, &res
.seq_res
, 1);
4653 * Free each page after tx, so the only ref left is
4654 * held by the network stack
4657 put_page(pages
[i
-1]);
4660 * Acl update can result in inode attribute update.
4661 * so mark the attribute cache invalid.
4663 spin_lock(&inode
->i_lock
);
4664 NFS_I(inode
)->cache_validity
|= NFS_INO_INVALID_ATTR
;
4665 spin_unlock(&inode
->i_lock
);
4666 nfs_access_zap_cache(inode
);
4667 nfs_zap_acl_cache(inode
);
4671 static int nfs4_proc_set_acl(struct inode
*inode
, const void *buf
, size_t buflen
)
4673 struct nfs4_exception exception
= { };
4676 err
= __nfs4_proc_set_acl(inode
, buf
, buflen
);
4677 trace_nfs4_set_acl(inode
, err
);
4678 err
= nfs4_handle_exception(NFS_SERVER(inode
), err
,
4680 } while (exception
.retry
);
4684 #ifdef CONFIG_NFS_V4_SECURITY_LABEL
4685 static int _nfs4_get_security_label(struct inode
*inode
, void *buf
,
4688 struct nfs_server
*server
= NFS_SERVER(inode
);
4689 struct nfs_fattr fattr
;
4690 struct nfs4_label label
= {0, 0, buflen
, buf
};
4692 u32 bitmask
[3] = { 0, 0, FATTR4_WORD2_SECURITY_LABEL
};
4693 struct nfs4_getattr_arg arg
= {
4694 .fh
= NFS_FH(inode
),
4697 struct nfs4_getattr_res res
= {
4702 struct rpc_message msg
= {
4703 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GETATTR
],
4709 nfs_fattr_init(&fattr
);
4711 ret
= nfs4_call_sync(server
->client
, server
, &msg
, &arg
.seq_args
, &res
.seq_res
, 0);
4714 if (!(fattr
.valid
& NFS_ATTR_FATTR_V4_SECURITY_LABEL
))
4716 if (buflen
< label
.len
)
4721 static int nfs4_get_security_label(struct inode
*inode
, void *buf
,
4724 struct nfs4_exception exception
= { };
4727 if (!nfs_server_capable(inode
, NFS_CAP_SECURITY_LABEL
))
4731 err
= _nfs4_get_security_label(inode
, buf
, buflen
);
4732 trace_nfs4_get_security_label(inode
, err
);
4733 err
= nfs4_handle_exception(NFS_SERVER(inode
), err
,
4735 } while (exception
.retry
);
4739 static int _nfs4_do_set_security_label(struct inode
*inode
,
4740 struct nfs4_label
*ilabel
,
4741 struct nfs_fattr
*fattr
,
4742 struct nfs4_label
*olabel
)
4745 struct iattr sattr
= {0};
4746 struct nfs_server
*server
= NFS_SERVER(inode
);
4747 const u32 bitmask
[3] = { 0, 0, FATTR4_WORD2_SECURITY_LABEL
};
4748 struct nfs_setattrargs arg
= {
4749 .fh
= NFS_FH(inode
),
4755 struct nfs_setattrres res
= {
4760 struct rpc_message msg
= {
4761 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETATTR
],
4767 nfs4_stateid_copy(&arg
.stateid
, &zero_stateid
);
4769 status
= nfs4_call_sync(server
->client
, server
, &msg
, &arg
.seq_args
, &res
.seq_res
, 1);
4771 dprintk("%s failed: %d\n", __func__
, status
);
4776 static int nfs4_do_set_security_label(struct inode
*inode
,
4777 struct nfs4_label
*ilabel
,
4778 struct nfs_fattr
*fattr
,
4779 struct nfs4_label
*olabel
)
4781 struct nfs4_exception exception
= { };
4785 err
= _nfs4_do_set_security_label(inode
, ilabel
,
4787 trace_nfs4_set_security_label(inode
, err
);
4788 err
= nfs4_handle_exception(NFS_SERVER(inode
), err
,
4790 } while (exception
.retry
);
4795 nfs4_set_security_label(struct dentry
*dentry
, const void *buf
, size_t buflen
)
4797 struct nfs4_label ilabel
, *olabel
= NULL
;
4798 struct nfs_fattr fattr
;
4799 struct rpc_cred
*cred
;
4800 struct inode
*inode
= dentry
->d_inode
;
4803 if (!nfs_server_capable(inode
, NFS_CAP_SECURITY_LABEL
))
4806 nfs_fattr_init(&fattr
);
4810 ilabel
.label
= (char *)buf
;
4811 ilabel
.len
= buflen
;
4813 cred
= rpc_lookup_cred();
4815 return PTR_ERR(cred
);
4817 olabel
= nfs4_label_alloc(NFS_SERVER(inode
), GFP_KERNEL
);
4818 if (IS_ERR(olabel
)) {
4819 status
= -PTR_ERR(olabel
);
4823 status
= nfs4_do_set_security_label(inode
, &ilabel
, &fattr
, olabel
);
4825 nfs_setsecurity(inode
, &fattr
, olabel
);
4827 nfs4_label_free(olabel
);
4832 #endif /* CONFIG_NFS_V4_SECURITY_LABEL */
4836 nfs4_async_handle_error(struct rpc_task
*task
, const struct nfs_server
*server
,
4837 struct nfs4_state
*state
, long *timeout
)
4839 struct nfs_client
*clp
= server
->nfs_client
;
4841 if (task
->tk_status
>= 0)
4843 switch(task
->tk_status
) {
4844 case -NFS4ERR_DELEG_REVOKED
:
4845 case -NFS4ERR_ADMIN_REVOKED
:
4846 case -NFS4ERR_BAD_STATEID
:
4849 nfs_remove_bad_delegation(state
->inode
);
4850 case -NFS4ERR_OPENMODE
:
4853 if (nfs4_schedule_stateid_recovery(server
, state
) < 0)
4854 goto recovery_failed
;
4855 goto wait_on_recovery
;
4856 case -NFS4ERR_EXPIRED
:
4857 if (state
!= NULL
) {
4858 if (nfs4_schedule_stateid_recovery(server
, state
) < 0)
4859 goto recovery_failed
;
4861 case -NFS4ERR_STALE_STATEID
:
4862 case -NFS4ERR_STALE_CLIENTID
:
4863 nfs4_schedule_lease_recovery(clp
);
4864 goto wait_on_recovery
;
4865 case -NFS4ERR_MOVED
:
4866 if (nfs4_schedule_migration_recovery(server
) < 0)
4867 goto recovery_failed
;
4868 goto wait_on_recovery
;
4869 case -NFS4ERR_LEASE_MOVED
:
4870 nfs4_schedule_lease_moved_recovery(clp
);
4871 goto wait_on_recovery
;
4872 #if defined(CONFIG_NFS_V4_1)
4873 case -NFS4ERR_BADSESSION
:
4874 case -NFS4ERR_BADSLOT
:
4875 case -NFS4ERR_BAD_HIGH_SLOT
:
4876 case -NFS4ERR_DEADSESSION
:
4877 case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION
:
4878 case -NFS4ERR_SEQ_FALSE_RETRY
:
4879 case -NFS4ERR_SEQ_MISORDERED
:
4880 dprintk("%s ERROR %d, Reset session\n", __func__
,
4882 nfs4_schedule_session_recovery(clp
->cl_session
, task
->tk_status
);
4883 goto wait_on_recovery
;
4884 #endif /* CONFIG_NFS_V4_1 */
4885 case -NFS4ERR_DELAY
:
4886 nfs_inc_server_stats(server
, NFSIOS_DELAY
);
4887 rpc_delay(task
, nfs4_update_delay(timeout
));
4889 case -NFS4ERR_GRACE
:
4890 rpc_delay(task
, NFS4_POLL_RETRY_MAX
);
4891 case -NFS4ERR_RETRY_UNCACHED_REP
:
4892 case -NFS4ERR_OLD_STATEID
:
4895 task
->tk_status
= nfs4_map_errors(task
->tk_status
);
4898 task
->tk_status
= -EIO
;
4901 rpc_sleep_on(&clp
->cl_rpcwaitq
, task
, NULL
);
4902 if (test_bit(NFS4CLNT_MANAGER_RUNNING
, &clp
->cl_state
) == 0)
4903 rpc_wake_up_queued_task(&clp
->cl_rpcwaitq
, task
);
4904 if (test_bit(NFS_MIG_FAILED
, &server
->mig_status
))
4905 goto recovery_failed
;
4907 task
->tk_status
= 0;
4911 static void nfs4_init_boot_verifier(const struct nfs_client
*clp
,
4912 nfs4_verifier
*bootverf
)
4916 if (test_bit(NFS4CLNT_PURGE_STATE
, &clp
->cl_state
)) {
4917 /* An impossible timestamp guarantees this value
4918 * will never match a generated boot time. */
4920 verf
[1] = cpu_to_be32(NSEC_PER_SEC
+ 1);
4922 struct nfs_net
*nn
= net_generic(clp
->cl_net
, nfs_net_id
);
4923 verf
[0] = cpu_to_be32(nn
->boot_time
.tv_sec
);
4924 verf
[1] = cpu_to_be32(nn
->boot_time
.tv_nsec
);
4926 memcpy(bootverf
->data
, verf
, sizeof(bootverf
->data
));
4930 nfs4_init_nonuniform_client_string(const struct nfs_client
*clp
,
4931 char *buf
, size_t len
)
4933 unsigned int result
;
4936 result
= scnprintf(buf
, len
, "Linux NFSv4.0 %s/%s %s",
4938 rpc_peeraddr2str(clp
->cl_rpcclient
,
4940 rpc_peeraddr2str(clp
->cl_rpcclient
,
4941 RPC_DISPLAY_PROTO
));
4947 nfs4_init_uniform_client_string(const struct nfs_client
*clp
,
4948 char *buf
, size_t len
)
4950 const char *nodename
= clp
->cl_rpcclient
->cl_nodename
;
4952 if (nfs4_client_id_uniquifier
[0] != '\0')
4953 return scnprintf(buf
, len
, "Linux NFSv%u.%u %s/%s",
4954 clp
->rpc_ops
->version
,
4955 clp
->cl_minorversion
,
4956 nfs4_client_id_uniquifier
,
4958 return scnprintf(buf
, len
, "Linux NFSv%u.%u %s",
4959 clp
->rpc_ops
->version
, clp
->cl_minorversion
,
4964 * nfs4_callback_up_net() starts only "tcp" and "tcp6" callback
4965 * services. Advertise one based on the address family of the
4969 nfs4_init_callback_netid(const struct nfs_client
*clp
, char *buf
, size_t len
)
4971 if (strchr(clp
->cl_ipaddr
, ':') != NULL
)
4972 return scnprintf(buf
, len
, "tcp6");
4974 return scnprintf(buf
, len
, "tcp");
4977 static void nfs4_setclientid_done(struct rpc_task
*task
, void *calldata
)
4979 struct nfs4_setclientid
*sc
= calldata
;
4981 if (task
->tk_status
== 0)
4982 sc
->sc_cred
= get_rpccred(task
->tk_rqstp
->rq_cred
);
4985 static const struct rpc_call_ops nfs4_setclientid_ops
= {
4986 .rpc_call_done
= nfs4_setclientid_done
,
4990 * nfs4_proc_setclientid - Negotiate client ID
4991 * @clp: state data structure
4992 * @program: RPC program for NFSv4 callback service
4993 * @port: IP port number for NFS4 callback service
4994 * @cred: RPC credential to use for this call
4995 * @res: where to place the result
4997 * Returns zero, a negative errno, or a negative NFS4ERR status code.
4999 int nfs4_proc_setclientid(struct nfs_client
*clp
, u32 program
,
5000 unsigned short port
, struct rpc_cred
*cred
,
5001 struct nfs4_setclientid_res
*res
)
5003 nfs4_verifier sc_verifier
;
5004 struct nfs4_setclientid setclientid
= {
5005 .sc_verifier
= &sc_verifier
,
5007 .sc_cb_ident
= clp
->cl_cb_ident
,
5009 struct rpc_message msg
= {
5010 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETCLIENTID
],
5011 .rpc_argp
= &setclientid
,
5015 struct rpc_task
*task
;
5016 struct rpc_task_setup task_setup_data
= {
5017 .rpc_client
= clp
->cl_rpcclient
,
5018 .rpc_message
= &msg
,
5019 .callback_ops
= &nfs4_setclientid_ops
,
5020 .callback_data
= &setclientid
,
5021 .flags
= RPC_TASK_TIMEOUT
,
5025 /* nfs_client_id4 */
5026 nfs4_init_boot_verifier(clp
, &sc_verifier
);
5027 if (test_bit(NFS_CS_MIGRATION
, &clp
->cl_flags
))
5028 setclientid
.sc_name_len
=
5029 nfs4_init_uniform_client_string(clp
,
5030 setclientid
.sc_name
,
5031 sizeof(setclientid
.sc_name
));
5033 setclientid
.sc_name_len
=
5034 nfs4_init_nonuniform_client_string(clp
,
5035 setclientid
.sc_name
,
5036 sizeof(setclientid
.sc_name
));
5038 setclientid
.sc_netid_len
=
5039 nfs4_init_callback_netid(clp
,
5040 setclientid
.sc_netid
,
5041 sizeof(setclientid
.sc_netid
));
5042 setclientid
.sc_uaddr_len
= scnprintf(setclientid
.sc_uaddr
,
5043 sizeof(setclientid
.sc_uaddr
), "%s.%u.%u",
5044 clp
->cl_ipaddr
, port
>> 8, port
& 255);
5046 dprintk("NFS call setclientid auth=%s, '%.*s'\n",
5047 clp
->cl_rpcclient
->cl_auth
->au_ops
->au_name
,
5048 setclientid
.sc_name_len
, setclientid
.sc_name
);
5049 task
= rpc_run_task(&task_setup_data
);
5051 status
= PTR_ERR(task
);
5054 status
= task
->tk_status
;
5055 if (setclientid
.sc_cred
) {
5056 clp
->cl_acceptor
= rpcauth_stringify_acceptor(setclientid
.sc_cred
);
5057 put_rpccred(setclientid
.sc_cred
);
5061 trace_nfs4_setclientid(clp
, status
);
5062 dprintk("NFS reply setclientid: %d\n", status
);
5067 * nfs4_proc_setclientid_confirm - Confirm client ID
5068 * @clp: state data structure
5069 * @res: result of a previous SETCLIENTID
5070 * @cred: RPC credential to use for this call
5072 * Returns zero, a negative errno, or a negative NFS4ERR status code.
5074 int nfs4_proc_setclientid_confirm(struct nfs_client
*clp
,
5075 struct nfs4_setclientid_res
*arg
,
5076 struct rpc_cred
*cred
)
5078 struct rpc_message msg
= {
5079 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETCLIENTID_CONFIRM
],
5085 dprintk("NFS call setclientid_confirm auth=%s, (client ID %llx)\n",
5086 clp
->cl_rpcclient
->cl_auth
->au_ops
->au_name
,
5088 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
5089 trace_nfs4_setclientid_confirm(clp
, status
);
5090 dprintk("NFS reply setclientid_confirm: %d\n", status
);
5094 struct nfs4_delegreturndata
{
5095 struct nfs4_delegreturnargs args
;
5096 struct nfs4_delegreturnres res
;
5098 nfs4_stateid stateid
;
5099 unsigned long timestamp
;
5100 struct nfs_fattr fattr
;
5102 struct inode
*inode
;
5107 static void nfs4_delegreturn_done(struct rpc_task
*task
, void *calldata
)
5109 struct nfs4_delegreturndata
*data
= calldata
;
5111 if (!nfs4_sequence_done(task
, &data
->res
.seq_res
))
5114 trace_nfs4_delegreturn_exit(&data
->args
, &data
->res
, task
->tk_status
);
5115 switch (task
->tk_status
) {
5117 renew_lease(data
->res
.server
, data
->timestamp
);
5118 case -NFS4ERR_ADMIN_REVOKED
:
5119 case -NFS4ERR_DELEG_REVOKED
:
5120 case -NFS4ERR_BAD_STATEID
:
5121 case -NFS4ERR_OLD_STATEID
:
5122 case -NFS4ERR_STALE_STATEID
:
5123 case -NFS4ERR_EXPIRED
:
5124 task
->tk_status
= 0;
5126 pnfs_roc_set_barrier(data
->inode
, data
->roc_barrier
);
5129 if (nfs4_async_handle_error(task
, data
->res
.server
,
5130 NULL
, NULL
) == -EAGAIN
) {
5131 rpc_restart_call_prepare(task
);
5135 data
->rpc_status
= task
->tk_status
;
5138 static void nfs4_delegreturn_release(void *calldata
)
5140 struct nfs4_delegreturndata
*data
= calldata
;
5143 pnfs_roc_release(data
->inode
);
5147 static void nfs4_delegreturn_prepare(struct rpc_task
*task
, void *data
)
5149 struct nfs4_delegreturndata
*d_data
;
5151 d_data
= (struct nfs4_delegreturndata
*)data
;
5154 pnfs_roc_drain(d_data
->inode
, &d_data
->roc_barrier
, task
))
5157 nfs4_setup_sequence(d_data
->res
.server
,
5158 &d_data
->args
.seq_args
,
5159 &d_data
->res
.seq_res
,
5163 static const struct rpc_call_ops nfs4_delegreturn_ops
= {
5164 .rpc_call_prepare
= nfs4_delegreturn_prepare
,
5165 .rpc_call_done
= nfs4_delegreturn_done
,
5166 .rpc_release
= nfs4_delegreturn_release
,
5169 static int _nfs4_proc_delegreturn(struct inode
*inode
, struct rpc_cred
*cred
, const nfs4_stateid
*stateid
, int issync
)
5171 struct nfs4_delegreturndata
*data
;
5172 struct nfs_server
*server
= NFS_SERVER(inode
);
5173 struct rpc_task
*task
;
5174 struct rpc_message msg
= {
5175 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_DELEGRETURN
],
5178 struct rpc_task_setup task_setup_data
= {
5179 .rpc_client
= server
->client
,
5180 .rpc_message
= &msg
,
5181 .callback_ops
= &nfs4_delegreturn_ops
,
5182 .flags
= RPC_TASK_ASYNC
,
5186 data
= kzalloc(sizeof(*data
), GFP_NOFS
);
5189 nfs4_init_sequence(&data
->args
.seq_args
, &data
->res
.seq_res
, 1);
5190 data
->args
.fhandle
= &data
->fh
;
5191 data
->args
.stateid
= &data
->stateid
;
5192 data
->args
.bitmask
= server
->cache_consistency_bitmask
;
5193 nfs_copy_fh(&data
->fh
, NFS_FH(inode
));
5194 nfs4_stateid_copy(&data
->stateid
, stateid
);
5195 data
->res
.fattr
= &data
->fattr
;
5196 data
->res
.server
= server
;
5197 nfs_fattr_init(data
->res
.fattr
);
5198 data
->timestamp
= jiffies
;
5199 data
->rpc_status
= 0;
5200 data
->inode
= inode
;
5201 data
->roc
= list_empty(&NFS_I(inode
)->open_files
) ?
5202 pnfs_roc(inode
) : false;
5204 task_setup_data
.callback_data
= data
;
5205 msg
.rpc_argp
= &data
->args
;
5206 msg
.rpc_resp
= &data
->res
;
5207 task
= rpc_run_task(&task_setup_data
);
5209 return PTR_ERR(task
);
5212 status
= nfs4_wait_for_completion_rpc_task(task
);
5215 status
= data
->rpc_status
;
5217 nfs_post_op_update_inode_force_wcc(inode
, &data
->fattr
);
5219 nfs_refresh_inode(inode
, &data
->fattr
);
5225 int nfs4_proc_delegreturn(struct inode
*inode
, struct rpc_cred
*cred
, const nfs4_stateid
*stateid
, int issync
)
5227 struct nfs_server
*server
= NFS_SERVER(inode
);
5228 struct nfs4_exception exception
= { };
5231 err
= _nfs4_proc_delegreturn(inode
, cred
, stateid
, issync
);
5232 trace_nfs4_delegreturn(inode
, err
);
5234 case -NFS4ERR_STALE_STATEID
:
5235 case -NFS4ERR_EXPIRED
:
5239 err
= nfs4_handle_exception(server
, err
, &exception
);
5240 } while (exception
.retry
);
5244 #define NFS4_LOCK_MINTIMEOUT (1 * HZ)
5245 #define NFS4_LOCK_MAXTIMEOUT (30 * HZ)
5248 * sleep, with exponential backoff, and retry the LOCK operation.
5250 static unsigned long
5251 nfs4_set_lock_task_retry(unsigned long timeout
)
5253 freezable_schedule_timeout_killable_unsafe(timeout
);
5255 if (timeout
> NFS4_LOCK_MAXTIMEOUT
)
5256 return NFS4_LOCK_MAXTIMEOUT
;
5260 static int _nfs4_proc_getlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
5262 struct inode
*inode
= state
->inode
;
5263 struct nfs_server
*server
= NFS_SERVER(inode
);
5264 struct nfs_client
*clp
= server
->nfs_client
;
5265 struct nfs_lockt_args arg
= {
5266 .fh
= NFS_FH(inode
),
5269 struct nfs_lockt_res res
= {
5272 struct rpc_message msg
= {
5273 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOCKT
],
5276 .rpc_cred
= state
->owner
->so_cred
,
5278 struct nfs4_lock_state
*lsp
;
5281 arg
.lock_owner
.clientid
= clp
->cl_clientid
;
5282 status
= nfs4_set_lock_state(state
, request
);
5285 lsp
= request
->fl_u
.nfs4_fl
.owner
;
5286 arg
.lock_owner
.id
= lsp
->ls_seqid
.owner_id
;
5287 arg
.lock_owner
.s_dev
= server
->s_dev
;
5288 status
= nfs4_call_sync(server
->client
, server
, &msg
, &arg
.seq_args
, &res
.seq_res
, 1);
5291 request
->fl_type
= F_UNLCK
;
5293 case -NFS4ERR_DENIED
:
5296 request
->fl_ops
->fl_release_private(request
);
5297 request
->fl_ops
= NULL
;
5302 static int nfs4_proc_getlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
5304 struct nfs4_exception exception
= { };
5308 err
= _nfs4_proc_getlk(state
, cmd
, request
);
5309 trace_nfs4_get_lock(request
, state
, cmd
, err
);
5310 err
= nfs4_handle_exception(NFS_SERVER(state
->inode
), err
,
5312 } while (exception
.retry
);
5316 static int do_vfs_lock(struct file
*file
, struct file_lock
*fl
)
5319 switch (fl
->fl_flags
& (FL_POSIX
|FL_FLOCK
)) {
5321 res
= posix_lock_file_wait(file
, fl
);
5324 res
= flock_lock_file_wait(file
, fl
);
5332 struct nfs4_unlockdata
{
5333 struct nfs_locku_args arg
;
5334 struct nfs_locku_res res
;
5335 struct nfs4_lock_state
*lsp
;
5336 struct nfs_open_context
*ctx
;
5337 struct file_lock fl
;
5338 const struct nfs_server
*server
;
5339 unsigned long timestamp
;
5342 static struct nfs4_unlockdata
*nfs4_alloc_unlockdata(struct file_lock
*fl
,
5343 struct nfs_open_context
*ctx
,
5344 struct nfs4_lock_state
*lsp
,
5345 struct nfs_seqid
*seqid
)
5347 struct nfs4_unlockdata
*p
;
5348 struct inode
*inode
= lsp
->ls_state
->inode
;
5350 p
= kzalloc(sizeof(*p
), GFP_NOFS
);
5353 p
->arg
.fh
= NFS_FH(inode
);
5355 p
->arg
.seqid
= seqid
;
5356 p
->res
.seqid
= seqid
;
5357 p
->arg
.stateid
= &lsp
->ls_stateid
;
5359 atomic_inc(&lsp
->ls_count
);
5360 /* Ensure we don't close file until we're done freeing locks! */
5361 p
->ctx
= get_nfs_open_context(ctx
);
5362 memcpy(&p
->fl
, fl
, sizeof(p
->fl
));
5363 p
->server
= NFS_SERVER(inode
);
5367 static void nfs4_locku_release_calldata(void *data
)
5369 struct nfs4_unlockdata
*calldata
= data
;
5370 nfs_free_seqid(calldata
->arg
.seqid
);
5371 nfs4_put_lock_state(calldata
->lsp
);
5372 put_nfs_open_context(calldata
->ctx
);
5376 static void nfs4_locku_done(struct rpc_task
*task
, void *data
)
5378 struct nfs4_unlockdata
*calldata
= data
;
5380 if (!nfs4_sequence_done(task
, &calldata
->res
.seq_res
))
5382 switch (task
->tk_status
) {
5384 nfs4_stateid_copy(&calldata
->lsp
->ls_stateid
,
5385 &calldata
->res
.stateid
);
5386 renew_lease(calldata
->server
, calldata
->timestamp
);
5388 case -NFS4ERR_BAD_STATEID
:
5389 case -NFS4ERR_OLD_STATEID
:
5390 case -NFS4ERR_STALE_STATEID
:
5391 case -NFS4ERR_EXPIRED
:
5394 if (nfs4_async_handle_error(task
, calldata
->server
,
5395 NULL
, NULL
) == -EAGAIN
)
5396 rpc_restart_call_prepare(task
);
5398 nfs_release_seqid(calldata
->arg
.seqid
);
5401 static void nfs4_locku_prepare(struct rpc_task
*task
, void *data
)
5403 struct nfs4_unlockdata
*calldata
= data
;
5405 if (nfs_wait_on_sequence(calldata
->arg
.seqid
, task
) != 0)
5407 if (test_bit(NFS_LOCK_INITIALIZED
, &calldata
->lsp
->ls_flags
) == 0) {
5408 /* Note: exit _without_ running nfs4_locku_done */
5411 calldata
->timestamp
= jiffies
;
5412 if (nfs4_setup_sequence(calldata
->server
,
5413 &calldata
->arg
.seq_args
,
5414 &calldata
->res
.seq_res
,
5416 nfs_release_seqid(calldata
->arg
.seqid
);
5419 task
->tk_action
= NULL
;
5421 nfs4_sequence_done(task
, &calldata
->res
.seq_res
);
5424 static const struct rpc_call_ops nfs4_locku_ops
= {
5425 .rpc_call_prepare
= nfs4_locku_prepare
,
5426 .rpc_call_done
= nfs4_locku_done
,
5427 .rpc_release
= nfs4_locku_release_calldata
,
5430 static struct rpc_task
*nfs4_do_unlck(struct file_lock
*fl
,
5431 struct nfs_open_context
*ctx
,
5432 struct nfs4_lock_state
*lsp
,
5433 struct nfs_seqid
*seqid
)
5435 struct nfs4_unlockdata
*data
;
5436 struct rpc_message msg
= {
5437 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOCKU
],
5438 .rpc_cred
= ctx
->cred
,
5440 struct rpc_task_setup task_setup_data
= {
5441 .rpc_client
= NFS_CLIENT(lsp
->ls_state
->inode
),
5442 .rpc_message
= &msg
,
5443 .callback_ops
= &nfs4_locku_ops
,
5444 .workqueue
= nfsiod_workqueue
,
5445 .flags
= RPC_TASK_ASYNC
,
5448 nfs4_state_protect(NFS_SERVER(lsp
->ls_state
->inode
)->nfs_client
,
5449 NFS_SP4_MACH_CRED_CLEANUP
, &task_setup_data
.rpc_client
, &msg
);
5451 /* Ensure this is an unlock - when canceling a lock, the
5452 * canceled lock is passed in, and it won't be an unlock.
5454 fl
->fl_type
= F_UNLCK
;
5456 data
= nfs4_alloc_unlockdata(fl
, ctx
, lsp
, seqid
);
5458 nfs_free_seqid(seqid
);
5459 return ERR_PTR(-ENOMEM
);
5462 nfs4_init_sequence(&data
->arg
.seq_args
, &data
->res
.seq_res
, 1);
5463 msg
.rpc_argp
= &data
->arg
;
5464 msg
.rpc_resp
= &data
->res
;
5465 task_setup_data
.callback_data
= data
;
5466 return rpc_run_task(&task_setup_data
);
5469 static int nfs4_proc_unlck(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
5471 struct inode
*inode
= state
->inode
;
5472 struct nfs4_state_owner
*sp
= state
->owner
;
5473 struct nfs_inode
*nfsi
= NFS_I(inode
);
5474 struct nfs_seqid
*seqid
;
5475 struct nfs4_lock_state
*lsp
;
5476 struct rpc_task
*task
;
5478 unsigned char fl_flags
= request
->fl_flags
;
5480 status
= nfs4_set_lock_state(state
, request
);
5481 /* Unlock _before_ we do the RPC call */
5482 request
->fl_flags
|= FL_EXISTS
;
5483 /* Exclude nfs_delegation_claim_locks() */
5484 mutex_lock(&sp
->so_delegreturn_mutex
);
5485 /* Exclude nfs4_reclaim_open_stateid() - note nesting! */
5486 down_read(&nfsi
->rwsem
);
5487 if (do_vfs_lock(request
->fl_file
, request
) == -ENOENT
) {
5488 up_read(&nfsi
->rwsem
);
5489 mutex_unlock(&sp
->so_delegreturn_mutex
);
5492 up_read(&nfsi
->rwsem
);
5493 mutex_unlock(&sp
->so_delegreturn_mutex
);
5496 /* Is this a delegated lock? */
5497 lsp
= request
->fl_u
.nfs4_fl
.owner
;
5498 if (test_bit(NFS_LOCK_INITIALIZED
, &lsp
->ls_flags
) == 0)
5500 seqid
= nfs_alloc_seqid(&lsp
->ls_seqid
, GFP_KERNEL
);
5504 task
= nfs4_do_unlck(request
, nfs_file_open_context(request
->fl_file
), lsp
, seqid
);
5505 status
= PTR_ERR(task
);
5508 status
= nfs4_wait_for_completion_rpc_task(task
);
5511 request
->fl_flags
= fl_flags
;
5512 trace_nfs4_unlock(request
, state
, F_SETLK
, status
);
5516 struct nfs4_lockdata
{
5517 struct nfs_lock_args arg
;
5518 struct nfs_lock_res res
;
5519 struct nfs4_lock_state
*lsp
;
5520 struct nfs_open_context
*ctx
;
5521 struct file_lock fl
;
5522 unsigned long timestamp
;
5525 struct nfs_server
*server
;
5528 static struct nfs4_lockdata
*nfs4_alloc_lockdata(struct file_lock
*fl
,
5529 struct nfs_open_context
*ctx
, struct nfs4_lock_state
*lsp
,
5532 struct nfs4_lockdata
*p
;
5533 struct inode
*inode
= lsp
->ls_state
->inode
;
5534 struct nfs_server
*server
= NFS_SERVER(inode
);
5536 p
= kzalloc(sizeof(*p
), gfp_mask
);
5540 p
->arg
.fh
= NFS_FH(inode
);
5542 p
->arg
.open_seqid
= nfs_alloc_seqid(&lsp
->ls_state
->owner
->so_seqid
, gfp_mask
);
5543 if (p
->arg
.open_seqid
== NULL
)
5545 p
->arg
.lock_seqid
= nfs_alloc_seqid(&lsp
->ls_seqid
, gfp_mask
);
5546 if (p
->arg
.lock_seqid
== NULL
)
5547 goto out_free_seqid
;
5548 p
->arg
.lock_stateid
= &lsp
->ls_stateid
;
5549 p
->arg
.lock_owner
.clientid
= server
->nfs_client
->cl_clientid
;
5550 p
->arg
.lock_owner
.id
= lsp
->ls_seqid
.owner_id
;
5551 p
->arg
.lock_owner
.s_dev
= server
->s_dev
;
5552 p
->res
.lock_seqid
= p
->arg
.lock_seqid
;
5555 atomic_inc(&lsp
->ls_count
);
5556 p
->ctx
= get_nfs_open_context(ctx
);
5557 memcpy(&p
->fl
, fl
, sizeof(p
->fl
));
5560 nfs_free_seqid(p
->arg
.open_seqid
);
5566 static void nfs4_lock_prepare(struct rpc_task
*task
, void *calldata
)
5568 struct nfs4_lockdata
*data
= calldata
;
5569 struct nfs4_state
*state
= data
->lsp
->ls_state
;
5571 dprintk("%s: begin!\n", __func__
);
5572 if (nfs_wait_on_sequence(data
->arg
.lock_seqid
, task
) != 0)
5574 /* Do we need to do an open_to_lock_owner? */
5575 if (!(data
->arg
.lock_seqid
->sequence
->flags
& NFS_SEQID_CONFIRMED
)) {
5576 if (nfs_wait_on_sequence(data
->arg
.open_seqid
, task
) != 0) {
5577 goto out_release_lock_seqid
;
5579 data
->arg
.open_stateid
= &state
->open_stateid
;
5580 data
->arg
.new_lock_owner
= 1;
5581 data
->res
.open_seqid
= data
->arg
.open_seqid
;
5583 data
->arg
.new_lock_owner
= 0;
5584 if (!nfs4_valid_open_stateid(state
)) {
5585 data
->rpc_status
= -EBADF
;
5586 task
->tk_action
= NULL
;
5587 goto out_release_open_seqid
;
5589 data
->timestamp
= jiffies
;
5590 if (nfs4_setup_sequence(data
->server
,
5591 &data
->arg
.seq_args
,
5595 out_release_open_seqid
:
5596 nfs_release_seqid(data
->arg
.open_seqid
);
5597 out_release_lock_seqid
:
5598 nfs_release_seqid(data
->arg
.lock_seqid
);
5600 nfs4_sequence_done(task
, &data
->res
.seq_res
);
5601 dprintk("%s: done!, ret = %d\n", __func__
, data
->rpc_status
);
5604 static void nfs4_lock_done(struct rpc_task
*task
, void *calldata
)
5606 struct nfs4_lockdata
*data
= calldata
;
5608 dprintk("%s: begin!\n", __func__
);
5610 if (!nfs4_sequence_done(task
, &data
->res
.seq_res
))
5613 data
->rpc_status
= task
->tk_status
;
5614 if (data
->arg
.new_lock_owner
!= 0) {
5615 if (data
->rpc_status
== 0)
5616 nfs_confirm_seqid(&data
->lsp
->ls_seqid
, 0);
5620 if (data
->rpc_status
== 0) {
5621 nfs4_stateid_copy(&data
->lsp
->ls_stateid
, &data
->res
.stateid
);
5622 set_bit(NFS_LOCK_INITIALIZED
, &data
->lsp
->ls_flags
);
5623 renew_lease(NFS_SERVER(data
->ctx
->dentry
->d_inode
), data
->timestamp
);
5626 dprintk("%s: done, ret = %d!\n", __func__
, data
->rpc_status
);
5629 static void nfs4_lock_release(void *calldata
)
5631 struct nfs4_lockdata
*data
= calldata
;
5633 dprintk("%s: begin!\n", __func__
);
5634 nfs_free_seqid(data
->arg
.open_seqid
);
5635 if (data
->cancelled
!= 0) {
5636 struct rpc_task
*task
;
5637 task
= nfs4_do_unlck(&data
->fl
, data
->ctx
, data
->lsp
,
5638 data
->arg
.lock_seqid
);
5640 rpc_put_task_async(task
);
5641 dprintk("%s: cancelling lock!\n", __func__
);
5643 nfs_free_seqid(data
->arg
.lock_seqid
);
5644 nfs4_put_lock_state(data
->lsp
);
5645 put_nfs_open_context(data
->ctx
);
5647 dprintk("%s: done!\n", __func__
);
5650 static const struct rpc_call_ops nfs4_lock_ops
= {
5651 .rpc_call_prepare
= nfs4_lock_prepare
,
5652 .rpc_call_done
= nfs4_lock_done
,
5653 .rpc_release
= nfs4_lock_release
,
5656 static void nfs4_handle_setlk_error(struct nfs_server
*server
, struct nfs4_lock_state
*lsp
, int new_lock_owner
, int error
)
5659 case -NFS4ERR_ADMIN_REVOKED
:
5660 case -NFS4ERR_BAD_STATEID
:
5661 lsp
->ls_seqid
.flags
&= ~NFS_SEQID_CONFIRMED
;
5662 if (new_lock_owner
!= 0 ||
5663 test_bit(NFS_LOCK_INITIALIZED
, &lsp
->ls_flags
) != 0)
5664 nfs4_schedule_stateid_recovery(server
, lsp
->ls_state
);
5666 case -NFS4ERR_STALE_STATEID
:
5667 lsp
->ls_seqid
.flags
&= ~NFS_SEQID_CONFIRMED
;
5668 case -NFS4ERR_EXPIRED
:
5669 nfs4_schedule_lease_recovery(server
->nfs_client
);
5673 static int _nfs4_do_setlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*fl
, int recovery_type
)
5675 struct nfs4_lockdata
*data
;
5676 struct rpc_task
*task
;
5677 struct rpc_message msg
= {
5678 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOCK
],
5679 .rpc_cred
= state
->owner
->so_cred
,
5681 struct rpc_task_setup task_setup_data
= {
5682 .rpc_client
= NFS_CLIENT(state
->inode
),
5683 .rpc_message
= &msg
,
5684 .callback_ops
= &nfs4_lock_ops
,
5685 .workqueue
= nfsiod_workqueue
,
5686 .flags
= RPC_TASK_ASYNC
,
5690 dprintk("%s: begin!\n", __func__
);
5691 data
= nfs4_alloc_lockdata(fl
, nfs_file_open_context(fl
->fl_file
),
5692 fl
->fl_u
.nfs4_fl
.owner
,
5693 recovery_type
== NFS_LOCK_NEW
? GFP_KERNEL
: GFP_NOFS
);
5697 data
->arg
.block
= 1;
5698 nfs4_init_sequence(&data
->arg
.seq_args
, &data
->res
.seq_res
, 1);
5699 msg
.rpc_argp
= &data
->arg
;
5700 msg
.rpc_resp
= &data
->res
;
5701 task_setup_data
.callback_data
= data
;
5702 if (recovery_type
> NFS_LOCK_NEW
) {
5703 if (recovery_type
== NFS_LOCK_RECLAIM
)
5704 data
->arg
.reclaim
= NFS_LOCK_RECLAIM
;
5705 nfs4_set_sequence_privileged(&data
->arg
.seq_args
);
5707 task
= rpc_run_task(&task_setup_data
);
5709 return PTR_ERR(task
);
5710 ret
= nfs4_wait_for_completion_rpc_task(task
);
5712 ret
= data
->rpc_status
;
5714 nfs4_handle_setlk_error(data
->server
, data
->lsp
,
5715 data
->arg
.new_lock_owner
, ret
);
5717 data
->cancelled
= 1;
5719 dprintk("%s: done, ret = %d!\n", __func__
, ret
);
5723 static int nfs4_lock_reclaim(struct nfs4_state
*state
, struct file_lock
*request
)
5725 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
5726 struct nfs4_exception exception
= {
5727 .inode
= state
->inode
,
5732 /* Cache the lock if possible... */
5733 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) != 0)
5735 err
= _nfs4_do_setlk(state
, F_SETLK
, request
, NFS_LOCK_RECLAIM
);
5736 trace_nfs4_lock_reclaim(request
, state
, F_SETLK
, err
);
5737 if (err
!= -NFS4ERR_DELAY
)
5739 nfs4_handle_exception(server
, err
, &exception
);
5740 } while (exception
.retry
);
5744 static int nfs4_lock_expired(struct nfs4_state
*state
, struct file_lock
*request
)
5746 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
5747 struct nfs4_exception exception
= {
5748 .inode
= state
->inode
,
5752 err
= nfs4_set_lock_state(state
, request
);
5755 if (!recover_lost_locks
) {
5756 set_bit(NFS_LOCK_LOST
, &request
->fl_u
.nfs4_fl
.owner
->ls_flags
);
5760 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) != 0)
5762 err
= _nfs4_do_setlk(state
, F_SETLK
, request
, NFS_LOCK_EXPIRED
);
5763 trace_nfs4_lock_expired(request
, state
, F_SETLK
, err
);
5767 case -NFS4ERR_GRACE
:
5768 case -NFS4ERR_DELAY
:
5769 nfs4_handle_exception(server
, err
, &exception
);
5772 } while (exception
.retry
);
5777 #if defined(CONFIG_NFS_V4_1)
5779 * nfs41_check_expired_locks - possibly free a lock stateid
5781 * @state: NFSv4 state for an inode
5783 * Returns NFS_OK if recovery for this stateid is now finished.
5784 * Otherwise a negative NFS4ERR value is returned.
5786 static int nfs41_check_expired_locks(struct nfs4_state
*state
)
5788 int status
, ret
= -NFS4ERR_BAD_STATEID
;
5789 struct nfs4_lock_state
*lsp
;
5790 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
5792 list_for_each_entry(lsp
, &state
->lock_states
, ls_locks
) {
5793 if (test_bit(NFS_LOCK_INITIALIZED
, &lsp
->ls_flags
)) {
5794 struct rpc_cred
*cred
= lsp
->ls_state
->owner
->so_cred
;
5796 status
= nfs41_test_stateid(server
,
5799 trace_nfs4_test_lock_stateid(state
, lsp
, status
);
5800 if (status
!= NFS_OK
) {
5801 /* Free the stateid unless the server
5802 * informs us the stateid is unrecognized. */
5803 if (status
!= -NFS4ERR_BAD_STATEID
)
5804 nfs41_free_stateid(server
,
5807 clear_bit(NFS_LOCK_INITIALIZED
, &lsp
->ls_flags
);
5816 static int nfs41_lock_expired(struct nfs4_state
*state
, struct file_lock
*request
)
5818 int status
= NFS_OK
;
5820 if (test_bit(LK_STATE_IN_USE
, &state
->flags
))
5821 status
= nfs41_check_expired_locks(state
);
5822 if (status
!= NFS_OK
)
5823 status
= nfs4_lock_expired(state
, request
);
5828 static int _nfs4_proc_setlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
5830 struct nfs4_state_owner
*sp
= state
->owner
;
5831 struct nfs_inode
*nfsi
= NFS_I(state
->inode
);
5832 unsigned char fl_flags
= request
->fl_flags
;
5834 int status
= -ENOLCK
;
5836 if ((fl_flags
& FL_POSIX
) &&
5837 !test_bit(NFS_STATE_POSIX_LOCKS
, &state
->flags
))
5839 /* Is this a delegated open? */
5840 status
= nfs4_set_lock_state(state
, request
);
5843 request
->fl_flags
|= FL_ACCESS
;
5844 status
= do_vfs_lock(request
->fl_file
, request
);
5847 down_read(&nfsi
->rwsem
);
5848 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
)) {
5849 /* Yes: cache locks! */
5850 /* ...but avoid races with delegation recall... */
5851 request
->fl_flags
= fl_flags
& ~FL_SLEEP
;
5852 status
= do_vfs_lock(request
->fl_file
, request
);
5855 seq
= raw_seqcount_begin(&sp
->so_reclaim_seqcount
);
5856 up_read(&nfsi
->rwsem
);
5857 status
= _nfs4_do_setlk(state
, cmd
, request
, NFS_LOCK_NEW
);
5860 down_read(&nfsi
->rwsem
);
5861 if (read_seqcount_retry(&sp
->so_reclaim_seqcount
, seq
)) {
5862 status
= -NFS4ERR_DELAY
;
5865 /* Note: we always want to sleep here! */
5866 request
->fl_flags
= fl_flags
| FL_SLEEP
;
5867 if (do_vfs_lock(request
->fl_file
, request
) < 0)
5868 printk(KERN_WARNING
"NFS: %s: VFS is out of sync with lock "
5869 "manager!\n", __func__
);
5871 up_read(&nfsi
->rwsem
);
5873 request
->fl_flags
= fl_flags
;
5877 static int nfs4_proc_setlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
5879 struct nfs4_exception exception
= {
5881 .inode
= state
->inode
,
5886 err
= _nfs4_proc_setlk(state
, cmd
, request
);
5887 trace_nfs4_set_lock(request
, state
, cmd
, err
);
5888 if (err
== -NFS4ERR_DENIED
)
5890 err
= nfs4_handle_exception(NFS_SERVER(state
->inode
),
5892 } while (exception
.retry
);
5897 nfs4_proc_lock(struct file
*filp
, int cmd
, struct file_lock
*request
)
5899 struct nfs_open_context
*ctx
;
5900 struct nfs4_state
*state
;
5901 unsigned long timeout
= NFS4_LOCK_MINTIMEOUT
;
5904 /* verify open state */
5905 ctx
= nfs_file_open_context(filp
);
5908 if (request
->fl_start
< 0 || request
->fl_end
< 0)
5911 if (IS_GETLK(cmd
)) {
5913 return nfs4_proc_getlk(state
, F_GETLK
, request
);
5917 if (!(IS_SETLK(cmd
) || IS_SETLKW(cmd
)))
5920 if (request
->fl_type
== F_UNLCK
) {
5922 return nfs4_proc_unlck(state
, cmd
, request
);
5929 * Don't rely on the VFS having checked the file open mode,
5930 * since it won't do this for flock() locks.
5932 switch (request
->fl_type
) {
5934 if (!(filp
->f_mode
& FMODE_READ
))
5938 if (!(filp
->f_mode
& FMODE_WRITE
))
5943 status
= nfs4_proc_setlk(state
, cmd
, request
);
5944 if ((status
!= -EAGAIN
) || IS_SETLK(cmd
))
5946 timeout
= nfs4_set_lock_task_retry(timeout
);
5947 status
= -ERESTARTSYS
;
5950 } while(status
< 0);
5954 int nfs4_lock_delegation_recall(struct file_lock
*fl
, struct nfs4_state
*state
, const nfs4_stateid
*stateid
)
5956 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
5959 err
= nfs4_set_lock_state(state
, fl
);
5962 err
= _nfs4_do_setlk(state
, F_SETLK
, fl
, NFS_LOCK_NEW
);
5963 return nfs4_handle_delegation_recall_error(server
, state
, stateid
, err
);
5966 struct nfs_release_lockowner_data
{
5967 struct nfs4_lock_state
*lsp
;
5968 struct nfs_server
*server
;
5969 struct nfs_release_lockowner_args args
;
5970 struct nfs_release_lockowner_res res
;
5971 unsigned long timestamp
;
5974 static void nfs4_release_lockowner_prepare(struct rpc_task
*task
, void *calldata
)
5976 struct nfs_release_lockowner_data
*data
= calldata
;
5977 struct nfs_server
*server
= data
->server
;
5978 nfs40_setup_sequence(server
, &data
->args
.seq_args
,
5979 &data
->res
.seq_res
, task
);
5980 data
->args
.lock_owner
.clientid
= server
->nfs_client
->cl_clientid
;
5981 data
->timestamp
= jiffies
;
5984 static void nfs4_release_lockowner_done(struct rpc_task
*task
, void *calldata
)
5986 struct nfs_release_lockowner_data
*data
= calldata
;
5987 struct nfs_server
*server
= data
->server
;
5989 nfs40_sequence_done(task
, &data
->res
.seq_res
);
5991 switch (task
->tk_status
) {
5993 renew_lease(server
, data
->timestamp
);
5995 case -NFS4ERR_STALE_CLIENTID
:
5996 case -NFS4ERR_EXPIRED
:
5997 nfs4_schedule_lease_recovery(server
->nfs_client
);
5999 case -NFS4ERR_LEASE_MOVED
:
6000 case -NFS4ERR_DELAY
:
6001 if (nfs4_async_handle_error(task
, server
,
6002 NULL
, NULL
) == -EAGAIN
)
6003 rpc_restart_call_prepare(task
);
6007 static void nfs4_release_lockowner_release(void *calldata
)
6009 struct nfs_release_lockowner_data
*data
= calldata
;
6010 nfs4_free_lock_state(data
->server
, data
->lsp
);
6014 static const struct rpc_call_ops nfs4_release_lockowner_ops
= {
6015 .rpc_call_prepare
= nfs4_release_lockowner_prepare
,
6016 .rpc_call_done
= nfs4_release_lockowner_done
,
6017 .rpc_release
= nfs4_release_lockowner_release
,
6021 nfs4_release_lockowner(struct nfs_server
*server
, struct nfs4_lock_state
*lsp
)
6023 struct nfs_release_lockowner_data
*data
;
6024 struct rpc_message msg
= {
6025 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RELEASE_LOCKOWNER
],
6028 if (server
->nfs_client
->cl_mvops
->minor_version
!= 0)
6031 data
= kmalloc(sizeof(*data
), GFP_NOFS
);
6035 data
->server
= server
;
6036 data
->args
.lock_owner
.clientid
= server
->nfs_client
->cl_clientid
;
6037 data
->args
.lock_owner
.id
= lsp
->ls_seqid
.owner_id
;
6038 data
->args
.lock_owner
.s_dev
= server
->s_dev
;
6040 msg
.rpc_argp
= &data
->args
;
6041 msg
.rpc_resp
= &data
->res
;
6042 nfs4_init_sequence(&data
->args
.seq_args
, &data
->res
.seq_res
, 0);
6043 rpc_call_async(server
->client
, &msg
, 0, &nfs4_release_lockowner_ops
, data
);
6046 #define XATTR_NAME_NFSV4_ACL "system.nfs4_acl"
6048 static int nfs4_xattr_set_nfs4_acl(struct dentry
*dentry
, const char *key
,
6049 const void *buf
, size_t buflen
,
6050 int flags
, int type
)
6052 if (strcmp(key
, "") != 0)
6055 return nfs4_proc_set_acl(dentry
->d_inode
, buf
, buflen
);
6058 static int nfs4_xattr_get_nfs4_acl(struct dentry
*dentry
, const char *key
,
6059 void *buf
, size_t buflen
, int type
)
6061 if (strcmp(key
, "") != 0)
6064 return nfs4_proc_get_acl(dentry
->d_inode
, buf
, buflen
);
6067 static size_t nfs4_xattr_list_nfs4_acl(struct dentry
*dentry
, char *list
,
6068 size_t list_len
, const char *name
,
6069 size_t name_len
, int type
)
6071 size_t len
= sizeof(XATTR_NAME_NFSV4_ACL
);
6073 if (!nfs4_server_supports_acls(NFS_SERVER(dentry
->d_inode
)))
6076 if (list
&& len
<= list_len
)
6077 memcpy(list
, XATTR_NAME_NFSV4_ACL
, len
);
6081 #ifdef CONFIG_NFS_V4_SECURITY_LABEL
6082 static inline int nfs4_server_supports_labels(struct nfs_server
*server
)
6084 return server
->caps
& NFS_CAP_SECURITY_LABEL
;
6087 static int nfs4_xattr_set_nfs4_label(struct dentry
*dentry
, const char *key
,
6088 const void *buf
, size_t buflen
,
6089 int flags
, int type
)
6091 if (security_ismaclabel(key
))
6092 return nfs4_set_security_label(dentry
, buf
, buflen
);
6097 static int nfs4_xattr_get_nfs4_label(struct dentry
*dentry
, const char *key
,
6098 void *buf
, size_t buflen
, int type
)
6100 if (security_ismaclabel(key
))
6101 return nfs4_get_security_label(dentry
->d_inode
, buf
, buflen
);
6105 static size_t nfs4_xattr_list_nfs4_label(struct dentry
*dentry
, char *list
,
6106 size_t list_len
, const char *name
,
6107 size_t name_len
, int type
)
6111 if (nfs_server_capable(dentry
->d_inode
, NFS_CAP_SECURITY_LABEL
)) {
6112 len
= security_inode_listsecurity(dentry
->d_inode
, NULL
, 0);
6113 if (list
&& len
<= list_len
)
6114 security_inode_listsecurity(dentry
->d_inode
, list
, len
);
6119 static const struct xattr_handler nfs4_xattr_nfs4_label_handler
= {
6120 .prefix
= XATTR_SECURITY_PREFIX
,
6121 .list
= nfs4_xattr_list_nfs4_label
,
6122 .get
= nfs4_xattr_get_nfs4_label
,
6123 .set
= nfs4_xattr_set_nfs4_label
,
6129 * nfs_fhget will use either the mounted_on_fileid or the fileid
6131 static void nfs_fixup_referral_attributes(struct nfs_fattr
*fattr
)
6133 if (!(((fattr
->valid
& NFS_ATTR_FATTR_MOUNTED_ON_FILEID
) ||
6134 (fattr
->valid
& NFS_ATTR_FATTR_FILEID
)) &&
6135 (fattr
->valid
& NFS_ATTR_FATTR_FSID
) &&
6136 (fattr
->valid
& NFS_ATTR_FATTR_V4_LOCATIONS
)))
6139 fattr
->valid
|= NFS_ATTR_FATTR_TYPE
| NFS_ATTR_FATTR_MODE
|
6140 NFS_ATTR_FATTR_NLINK
| NFS_ATTR_FATTR_V4_REFERRAL
;
6141 fattr
->mode
= S_IFDIR
| S_IRUGO
| S_IXUGO
;
6145 static int _nfs4_proc_fs_locations(struct rpc_clnt
*client
, struct inode
*dir
,
6146 const struct qstr
*name
,
6147 struct nfs4_fs_locations
*fs_locations
,
6150 struct nfs_server
*server
= NFS_SERVER(dir
);
6152 [0] = FATTR4_WORD0_FSID
| FATTR4_WORD0_FS_LOCATIONS
,
6154 struct nfs4_fs_locations_arg args
= {
6155 .dir_fh
= NFS_FH(dir
),
6160 struct nfs4_fs_locations_res res
= {
6161 .fs_locations
= fs_locations
,
6163 struct rpc_message msg
= {
6164 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_FS_LOCATIONS
],
6170 dprintk("%s: start\n", __func__
);
6172 /* Ask for the fileid of the absent filesystem if mounted_on_fileid
6173 * is not supported */
6174 if (NFS_SERVER(dir
)->attr_bitmask
[1] & FATTR4_WORD1_MOUNTED_ON_FILEID
)
6175 bitmask
[1] |= FATTR4_WORD1_MOUNTED_ON_FILEID
;
6177 bitmask
[0] |= FATTR4_WORD0_FILEID
;
6179 nfs_fattr_init(&fs_locations
->fattr
);
6180 fs_locations
->server
= server
;
6181 fs_locations
->nlocations
= 0;
6182 status
= nfs4_call_sync(client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
6183 dprintk("%s: returned status = %d\n", __func__
, status
);
6187 int nfs4_proc_fs_locations(struct rpc_clnt
*client
, struct inode
*dir
,
6188 const struct qstr
*name
,
6189 struct nfs4_fs_locations
*fs_locations
,
6192 struct nfs4_exception exception
= { };
6195 err
= _nfs4_proc_fs_locations(client
, dir
, name
,
6196 fs_locations
, page
);
6197 trace_nfs4_get_fs_locations(dir
, name
, err
);
6198 err
= nfs4_handle_exception(NFS_SERVER(dir
), err
,
6200 } while (exception
.retry
);
6205 * This operation also signals the server that this client is
6206 * performing migration recovery. The server can stop returning
6207 * NFS4ERR_LEASE_MOVED to this client. A RENEW operation is
6208 * appended to this compound to identify the client ID which is
6209 * performing recovery.
6211 static int _nfs40_proc_get_locations(struct inode
*inode
,
6212 struct nfs4_fs_locations
*locations
,
6213 struct page
*page
, struct rpc_cred
*cred
)
6215 struct nfs_server
*server
= NFS_SERVER(inode
);
6216 struct rpc_clnt
*clnt
= server
->client
;
6218 [0] = FATTR4_WORD0_FSID
| FATTR4_WORD0_FS_LOCATIONS
,
6220 struct nfs4_fs_locations_arg args
= {
6221 .clientid
= server
->nfs_client
->cl_clientid
,
6222 .fh
= NFS_FH(inode
),
6225 .migration
= 1, /* skip LOOKUP */
6226 .renew
= 1, /* append RENEW */
6228 struct nfs4_fs_locations_res res
= {
6229 .fs_locations
= locations
,
6233 struct rpc_message msg
= {
6234 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_FS_LOCATIONS
],
6239 unsigned long now
= jiffies
;
6242 nfs_fattr_init(&locations
->fattr
);
6243 locations
->server
= server
;
6244 locations
->nlocations
= 0;
6246 nfs4_init_sequence(&args
.seq_args
, &res
.seq_res
, 0);
6247 nfs4_set_sequence_privileged(&args
.seq_args
);
6248 status
= nfs4_call_sync_sequence(clnt
, server
, &msg
,
6249 &args
.seq_args
, &res
.seq_res
);
6253 renew_lease(server
, now
);
6257 #ifdef CONFIG_NFS_V4_1
6260 * This operation also signals the server that this client is
6261 * performing migration recovery. The server can stop asserting
6262 * SEQ4_STATUS_LEASE_MOVED for this client. The client ID
6263 * performing this operation is identified in the SEQUENCE
6264 * operation in this compound.
6266 * When the client supports GETATTR(fs_locations_info), it can
6267 * be plumbed in here.
6269 static int _nfs41_proc_get_locations(struct inode
*inode
,
6270 struct nfs4_fs_locations
*locations
,
6271 struct page
*page
, struct rpc_cred
*cred
)
6273 struct nfs_server
*server
= NFS_SERVER(inode
);
6274 struct rpc_clnt
*clnt
= server
->client
;
6276 [0] = FATTR4_WORD0_FSID
| FATTR4_WORD0_FS_LOCATIONS
,
6278 struct nfs4_fs_locations_arg args
= {
6279 .fh
= NFS_FH(inode
),
6282 .migration
= 1, /* skip LOOKUP */
6284 struct nfs4_fs_locations_res res
= {
6285 .fs_locations
= locations
,
6288 struct rpc_message msg
= {
6289 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_FS_LOCATIONS
],
6296 nfs_fattr_init(&locations
->fattr
);
6297 locations
->server
= server
;
6298 locations
->nlocations
= 0;
6300 nfs4_init_sequence(&args
.seq_args
, &res
.seq_res
, 0);
6301 nfs4_set_sequence_privileged(&args
.seq_args
);
6302 status
= nfs4_call_sync_sequence(clnt
, server
, &msg
,
6303 &args
.seq_args
, &res
.seq_res
);
6304 if (status
== NFS4_OK
&&
6305 res
.seq_res
.sr_status_flags
& SEQ4_STATUS_LEASE_MOVED
)
6306 status
= -NFS4ERR_LEASE_MOVED
;
6310 #endif /* CONFIG_NFS_V4_1 */
6313 * nfs4_proc_get_locations - discover locations for a migrated FSID
6314 * @inode: inode on FSID that is migrating
6315 * @locations: result of query
6317 * @cred: credential to use for this operation
6319 * Returns NFS4_OK on success, a negative NFS4ERR status code if the
6320 * operation failed, or a negative errno if a local error occurred.
6322 * On success, "locations" is filled in, but if the server has
6323 * no locations information, NFS_ATTR_FATTR_V4_LOCATIONS is not
6326 * -NFS4ERR_LEASE_MOVED is returned if the server still has leases
6327 * from this client that require migration recovery.
6329 int nfs4_proc_get_locations(struct inode
*inode
,
6330 struct nfs4_fs_locations
*locations
,
6331 struct page
*page
, struct rpc_cred
*cred
)
6333 struct nfs_server
*server
= NFS_SERVER(inode
);
6334 struct nfs_client
*clp
= server
->nfs_client
;
6335 const struct nfs4_mig_recovery_ops
*ops
=
6336 clp
->cl_mvops
->mig_recovery_ops
;
6337 struct nfs4_exception exception
= { };
6340 dprintk("%s: FSID %llx:%llx on \"%s\"\n", __func__
,
6341 (unsigned long long)server
->fsid
.major
,
6342 (unsigned long long)server
->fsid
.minor
,
6344 nfs_display_fhandle(NFS_FH(inode
), __func__
);
6347 status
= ops
->get_locations(inode
, locations
, page
, cred
);
6348 if (status
!= -NFS4ERR_DELAY
)
6350 nfs4_handle_exception(server
, status
, &exception
);
6351 } while (exception
.retry
);
6356 * This operation also signals the server that this client is
6357 * performing "lease moved" recovery. The server can stop
6358 * returning NFS4ERR_LEASE_MOVED to this client. A RENEW operation
6359 * is appended to this compound to identify the client ID which is
6360 * performing recovery.
6362 static int _nfs40_proc_fsid_present(struct inode
*inode
, struct rpc_cred
*cred
)
6364 struct nfs_server
*server
= NFS_SERVER(inode
);
6365 struct nfs_client
*clp
= NFS_SERVER(inode
)->nfs_client
;
6366 struct rpc_clnt
*clnt
= server
->client
;
6367 struct nfs4_fsid_present_arg args
= {
6368 .fh
= NFS_FH(inode
),
6369 .clientid
= clp
->cl_clientid
,
6370 .renew
= 1, /* append RENEW */
6372 struct nfs4_fsid_present_res res
= {
6375 struct rpc_message msg
= {
6376 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_FSID_PRESENT
],
6381 unsigned long now
= jiffies
;
6384 res
.fh
= nfs_alloc_fhandle();
6388 nfs4_init_sequence(&args
.seq_args
, &res
.seq_res
, 0);
6389 nfs4_set_sequence_privileged(&args
.seq_args
);
6390 status
= nfs4_call_sync_sequence(clnt
, server
, &msg
,
6391 &args
.seq_args
, &res
.seq_res
);
6392 nfs_free_fhandle(res
.fh
);
6396 do_renew_lease(clp
, now
);
6400 #ifdef CONFIG_NFS_V4_1
6403 * This operation also signals the server that this client is
6404 * performing "lease moved" recovery. The server can stop asserting
6405 * SEQ4_STATUS_LEASE_MOVED for this client. The client ID performing
6406 * this operation is identified in the SEQUENCE operation in this
6409 static int _nfs41_proc_fsid_present(struct inode
*inode
, struct rpc_cred
*cred
)
6411 struct nfs_server
*server
= NFS_SERVER(inode
);
6412 struct rpc_clnt
*clnt
= server
->client
;
6413 struct nfs4_fsid_present_arg args
= {
6414 .fh
= NFS_FH(inode
),
6416 struct nfs4_fsid_present_res res
= {
6418 struct rpc_message msg
= {
6419 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_FSID_PRESENT
],
6426 res
.fh
= nfs_alloc_fhandle();
6430 nfs4_init_sequence(&args
.seq_args
, &res
.seq_res
, 0);
6431 nfs4_set_sequence_privileged(&args
.seq_args
);
6432 status
= nfs4_call_sync_sequence(clnt
, server
, &msg
,
6433 &args
.seq_args
, &res
.seq_res
);
6434 nfs_free_fhandle(res
.fh
);
6435 if (status
== NFS4_OK
&&
6436 res
.seq_res
.sr_status_flags
& SEQ4_STATUS_LEASE_MOVED
)
6437 status
= -NFS4ERR_LEASE_MOVED
;
6441 #endif /* CONFIG_NFS_V4_1 */
6444 * nfs4_proc_fsid_present - Is this FSID present or absent on server?
6445 * @inode: inode on FSID to check
6446 * @cred: credential to use for this operation
6448 * Server indicates whether the FSID is present, moved, or not
6449 * recognized. This operation is necessary to clear a LEASE_MOVED
6450 * condition for this client ID.
6452 * Returns NFS4_OK if the FSID is present on this server,
6453 * -NFS4ERR_MOVED if the FSID is no longer present, a negative
6454 * NFS4ERR code if some error occurred on the server, or a
6455 * negative errno if a local failure occurred.
6457 int nfs4_proc_fsid_present(struct inode
*inode
, struct rpc_cred
*cred
)
6459 struct nfs_server
*server
= NFS_SERVER(inode
);
6460 struct nfs_client
*clp
= server
->nfs_client
;
6461 const struct nfs4_mig_recovery_ops
*ops
=
6462 clp
->cl_mvops
->mig_recovery_ops
;
6463 struct nfs4_exception exception
= { };
6466 dprintk("%s: FSID %llx:%llx on \"%s\"\n", __func__
,
6467 (unsigned long long)server
->fsid
.major
,
6468 (unsigned long long)server
->fsid
.minor
,
6470 nfs_display_fhandle(NFS_FH(inode
), __func__
);
6473 status
= ops
->fsid_present(inode
, cred
);
6474 if (status
!= -NFS4ERR_DELAY
)
6476 nfs4_handle_exception(server
, status
, &exception
);
6477 } while (exception
.retry
);
6482 * If 'use_integrity' is true and the state managment nfs_client
6483 * cl_rpcclient is using krb5i/p, use the integrity protected cl_rpcclient
6484 * and the machine credential as per RFC3530bis and RFC5661 Security
6485 * Considerations sections. Otherwise, just use the user cred with the
6486 * filesystem's rpc_client.
6488 static int _nfs4_proc_secinfo(struct inode
*dir
, const struct qstr
*name
, struct nfs4_secinfo_flavors
*flavors
, bool use_integrity
)
6491 struct nfs4_secinfo_arg args
= {
6492 .dir_fh
= NFS_FH(dir
),
6495 struct nfs4_secinfo_res res
= {
6498 struct rpc_message msg
= {
6499 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SECINFO
],
6503 struct rpc_clnt
*clnt
= NFS_SERVER(dir
)->client
;
6504 struct rpc_cred
*cred
= NULL
;
6506 if (use_integrity
) {
6507 clnt
= NFS_SERVER(dir
)->nfs_client
->cl_rpcclient
;
6508 cred
= nfs4_get_clid_cred(NFS_SERVER(dir
)->nfs_client
);
6509 msg
.rpc_cred
= cred
;
6512 dprintk("NFS call secinfo %s\n", name
->name
);
6514 nfs4_state_protect(NFS_SERVER(dir
)->nfs_client
,
6515 NFS_SP4_MACH_CRED_SECINFO
, &clnt
, &msg
);
6517 status
= nfs4_call_sync(clnt
, NFS_SERVER(dir
), &msg
, &args
.seq_args
,
6519 dprintk("NFS reply secinfo: %d\n", status
);
6527 int nfs4_proc_secinfo(struct inode
*dir
, const struct qstr
*name
,
6528 struct nfs4_secinfo_flavors
*flavors
)
6530 struct nfs4_exception exception
= { };
6533 err
= -NFS4ERR_WRONGSEC
;
6535 /* try to use integrity protection with machine cred */
6536 if (_nfs4_is_integrity_protected(NFS_SERVER(dir
)->nfs_client
))
6537 err
= _nfs4_proc_secinfo(dir
, name
, flavors
, true);
6540 * if unable to use integrity protection, or SECINFO with
6541 * integrity protection returns NFS4ERR_WRONGSEC (which is
6542 * disallowed by spec, but exists in deployed servers) use
6543 * the current filesystem's rpc_client and the user cred.
6545 if (err
== -NFS4ERR_WRONGSEC
)
6546 err
= _nfs4_proc_secinfo(dir
, name
, flavors
, false);
6548 trace_nfs4_secinfo(dir
, name
, err
);
6549 err
= nfs4_handle_exception(NFS_SERVER(dir
), err
,
6551 } while (exception
.retry
);
6555 #ifdef CONFIG_NFS_V4_1
6557 * Check the exchange flags returned by the server for invalid flags, having
6558 * both PNFS and NON_PNFS flags set, and not having one of NON_PNFS, PNFS, or
6561 static int nfs4_check_cl_exchange_flags(u32 flags
)
6563 if (flags
& ~EXCHGID4_FLAG_MASK_R
)
6565 if ((flags
& EXCHGID4_FLAG_USE_PNFS_MDS
) &&
6566 (flags
& EXCHGID4_FLAG_USE_NON_PNFS
))
6568 if (!(flags
& (EXCHGID4_FLAG_MASK_PNFS
)))
6572 return -NFS4ERR_INVAL
;
6576 nfs41_same_server_scope(struct nfs41_server_scope
*a
,
6577 struct nfs41_server_scope
*b
)
6579 if (a
->server_scope_sz
== b
->server_scope_sz
&&
6580 memcmp(a
->server_scope
, b
->server_scope
, a
->server_scope_sz
) == 0)
6587 * nfs4_proc_bind_conn_to_session()
6589 * The 4.1 client currently uses the same TCP connection for the
6590 * fore and backchannel.
6592 int nfs4_proc_bind_conn_to_session(struct nfs_client
*clp
, struct rpc_cred
*cred
)
6595 struct nfs41_bind_conn_to_session_res res
;
6596 struct rpc_message msg
= {
6598 &nfs4_procedures
[NFSPROC4_CLNT_BIND_CONN_TO_SESSION
],
6604 dprintk("--> %s\n", __func__
);
6606 res
.session
= kzalloc(sizeof(struct nfs4_session
), GFP_NOFS
);
6607 if (unlikely(res
.session
== NULL
)) {
6612 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
6613 trace_nfs4_bind_conn_to_session(clp
, status
);
6615 if (memcmp(res
.session
->sess_id
.data
,
6616 clp
->cl_session
->sess_id
.data
, NFS4_MAX_SESSIONID_LEN
)) {
6617 dprintk("NFS: %s: Session ID mismatch\n", __func__
);
6621 if (res
.dir
!= NFS4_CDFS4_BOTH
) {
6622 dprintk("NFS: %s: Unexpected direction from server\n",
6627 if (res
.use_conn_in_rdma_mode
) {
6628 dprintk("NFS: %s: Server returned RDMA mode = true\n",
6637 dprintk("<-- %s status= %d\n", __func__
, status
);
6642 * Minimum set of SP4_MACH_CRED operations from RFC 5661 in the enforce map
6643 * and operations we'd like to see to enable certain features in the allow map
6645 static const struct nfs41_state_protection nfs4_sp4_mach_cred_request
= {
6646 .how
= SP4_MACH_CRED
,
6647 .enforce
.u
.words
= {
6648 [1] = 1 << (OP_BIND_CONN_TO_SESSION
- 32) |
6649 1 << (OP_EXCHANGE_ID
- 32) |
6650 1 << (OP_CREATE_SESSION
- 32) |
6651 1 << (OP_DESTROY_SESSION
- 32) |
6652 1 << (OP_DESTROY_CLIENTID
- 32)
6655 [0] = 1 << (OP_CLOSE
) |
6658 [1] = 1 << (OP_SECINFO
- 32) |
6659 1 << (OP_SECINFO_NO_NAME
- 32) |
6660 1 << (OP_TEST_STATEID
- 32) |
6661 1 << (OP_FREE_STATEID
- 32) |
6662 1 << (OP_WRITE
- 32)
6667 * Select the state protection mode for client `clp' given the server results
6668 * from exchange_id in `sp'.
6670 * Returns 0 on success, negative errno otherwise.
6672 static int nfs4_sp4_select_mode(struct nfs_client
*clp
,
6673 struct nfs41_state_protection
*sp
)
6675 static const u32 supported_enforce
[NFS4_OP_MAP_NUM_WORDS
] = {
6676 [1] = 1 << (OP_BIND_CONN_TO_SESSION
- 32) |
6677 1 << (OP_EXCHANGE_ID
- 32) |
6678 1 << (OP_CREATE_SESSION
- 32) |
6679 1 << (OP_DESTROY_SESSION
- 32) |
6680 1 << (OP_DESTROY_CLIENTID
- 32)
6684 if (sp
->how
== SP4_MACH_CRED
) {
6685 /* Print state protect result */
6686 dfprintk(MOUNT
, "Server SP4_MACH_CRED support:\n");
6687 for (i
= 0; i
<= LAST_NFS4_OP
; i
++) {
6688 if (test_bit(i
, sp
->enforce
.u
.longs
))
6689 dfprintk(MOUNT
, " enforce op %d\n", i
);
6690 if (test_bit(i
, sp
->allow
.u
.longs
))
6691 dfprintk(MOUNT
, " allow op %d\n", i
);
6694 /* make sure nothing is on enforce list that isn't supported */
6695 for (i
= 0; i
< NFS4_OP_MAP_NUM_WORDS
; i
++) {
6696 if (sp
->enforce
.u
.words
[i
] & ~supported_enforce
[i
]) {
6697 dfprintk(MOUNT
, "sp4_mach_cred: disabled\n");
6703 * Minimal mode - state operations are allowed to use machine
6704 * credential. Note this already happens by default, so the
6705 * client doesn't have to do anything more than the negotiation.
6707 * NOTE: we don't care if EXCHANGE_ID is in the list -
6708 * we're already using the machine cred for exchange_id
6709 * and will never use a different cred.
6711 if (test_bit(OP_BIND_CONN_TO_SESSION
, sp
->enforce
.u
.longs
) &&
6712 test_bit(OP_CREATE_SESSION
, sp
->enforce
.u
.longs
) &&
6713 test_bit(OP_DESTROY_SESSION
, sp
->enforce
.u
.longs
) &&
6714 test_bit(OP_DESTROY_CLIENTID
, sp
->enforce
.u
.longs
)) {
6715 dfprintk(MOUNT
, "sp4_mach_cred:\n");
6716 dfprintk(MOUNT
, " minimal mode enabled\n");
6717 set_bit(NFS_SP4_MACH_CRED_MINIMAL
, &clp
->cl_sp4_flags
);
6719 dfprintk(MOUNT
, "sp4_mach_cred: disabled\n");
6723 if (test_bit(OP_CLOSE
, sp
->allow
.u
.longs
) &&
6724 test_bit(OP_LOCKU
, sp
->allow
.u
.longs
)) {
6725 dfprintk(MOUNT
, " cleanup mode enabled\n");
6726 set_bit(NFS_SP4_MACH_CRED_CLEANUP
, &clp
->cl_sp4_flags
);
6729 if (test_bit(OP_SECINFO
, sp
->allow
.u
.longs
) &&
6730 test_bit(OP_SECINFO_NO_NAME
, sp
->allow
.u
.longs
)) {
6731 dfprintk(MOUNT
, " secinfo mode enabled\n");
6732 set_bit(NFS_SP4_MACH_CRED_SECINFO
, &clp
->cl_sp4_flags
);
6735 if (test_bit(OP_TEST_STATEID
, sp
->allow
.u
.longs
) &&
6736 test_bit(OP_FREE_STATEID
, sp
->allow
.u
.longs
)) {
6737 dfprintk(MOUNT
, " stateid mode enabled\n");
6738 set_bit(NFS_SP4_MACH_CRED_STATEID
, &clp
->cl_sp4_flags
);
6741 if (test_bit(OP_WRITE
, sp
->allow
.u
.longs
)) {
6742 dfprintk(MOUNT
, " write mode enabled\n");
6743 set_bit(NFS_SP4_MACH_CRED_WRITE
, &clp
->cl_sp4_flags
);
6746 if (test_bit(OP_COMMIT
, sp
->allow
.u
.longs
)) {
6747 dfprintk(MOUNT
, " commit mode enabled\n");
6748 set_bit(NFS_SP4_MACH_CRED_COMMIT
, &clp
->cl_sp4_flags
);
6756 * _nfs4_proc_exchange_id()
6758 * Wrapper for EXCHANGE_ID operation.
6760 static int _nfs4_proc_exchange_id(struct nfs_client
*clp
, struct rpc_cred
*cred
,
6763 nfs4_verifier verifier
;
6764 struct nfs41_exchange_id_args args
= {
6765 .verifier
= &verifier
,
6767 #ifdef CONFIG_NFS_V4_1_MIGRATION
6768 .flags
= EXCHGID4_FLAG_SUPP_MOVED_REFER
|
6769 EXCHGID4_FLAG_BIND_PRINC_STATEID
|
6770 EXCHGID4_FLAG_SUPP_MOVED_MIGR
,
6772 .flags
= EXCHGID4_FLAG_SUPP_MOVED_REFER
|
6773 EXCHGID4_FLAG_BIND_PRINC_STATEID
,
6776 struct nfs41_exchange_id_res res
= {
6780 struct rpc_message msg
= {
6781 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_EXCHANGE_ID
],
6787 nfs4_init_boot_verifier(clp
, &verifier
);
6788 args
.id_len
= nfs4_init_uniform_client_string(clp
, args
.id
,
6790 dprintk("NFS call exchange_id auth=%s, '%.*s'\n",
6791 clp
->cl_rpcclient
->cl_auth
->au_ops
->au_name
,
6792 args
.id_len
, args
.id
);
6794 res
.server_owner
= kzalloc(sizeof(struct nfs41_server_owner
),
6796 if (unlikely(res
.server_owner
== NULL
)) {
6801 res
.server_scope
= kzalloc(sizeof(struct nfs41_server_scope
),
6803 if (unlikely(res
.server_scope
== NULL
)) {
6805 goto out_server_owner
;
6808 res
.impl_id
= kzalloc(sizeof(struct nfs41_impl_id
), GFP_NOFS
);
6809 if (unlikely(res
.impl_id
== NULL
)) {
6811 goto out_server_scope
;
6816 args
.state_protect
.how
= SP4_NONE
;
6820 args
.state_protect
= nfs4_sp4_mach_cred_request
;
6827 goto out_server_scope
;
6830 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
6831 trace_nfs4_exchange_id(clp
, status
);
6833 status
= nfs4_check_cl_exchange_flags(res
.flags
);
6836 status
= nfs4_sp4_select_mode(clp
, &res
.state_protect
);
6839 clp
->cl_clientid
= res
.clientid
;
6840 clp
->cl_exchange_flags
= (res
.flags
& ~EXCHGID4_FLAG_CONFIRMED_R
);
6841 if (!(res
.flags
& EXCHGID4_FLAG_CONFIRMED_R
))
6842 clp
->cl_seqid
= res
.seqid
;
6844 kfree(clp
->cl_serverowner
);
6845 clp
->cl_serverowner
= res
.server_owner
;
6846 res
.server_owner
= NULL
;
6848 /* use the most recent implementation id */
6849 kfree(clp
->cl_implid
);
6850 clp
->cl_implid
= res
.impl_id
;
6852 if (clp
->cl_serverscope
!= NULL
&&
6853 !nfs41_same_server_scope(clp
->cl_serverscope
,
6854 res
.server_scope
)) {
6855 dprintk("%s: server_scope mismatch detected\n",
6857 set_bit(NFS4CLNT_SERVER_SCOPE_MISMATCH
, &clp
->cl_state
);
6858 kfree(clp
->cl_serverscope
);
6859 clp
->cl_serverscope
= NULL
;
6862 if (clp
->cl_serverscope
== NULL
) {
6863 clp
->cl_serverscope
= res
.server_scope
;
6870 kfree(res
.server_owner
);
6872 kfree(res
.server_scope
);
6874 if (clp
->cl_implid
!= NULL
)
6875 dprintk("NFS reply exchange_id: Server Implementation ID: "
6876 "domain: %s, name: %s, date: %llu,%u\n",
6877 clp
->cl_implid
->domain
, clp
->cl_implid
->name
,
6878 clp
->cl_implid
->date
.seconds
,
6879 clp
->cl_implid
->date
.nseconds
);
6880 dprintk("NFS reply exchange_id: %d\n", status
);
6885 * nfs4_proc_exchange_id()
6887 * Returns zero, a negative errno, or a negative NFS4ERR status code.
6889 * Since the clientid has expired, all compounds using sessions
6890 * associated with the stale clientid will be returning
6891 * NFS4ERR_BADSESSION in the sequence operation, and will therefore
6892 * be in some phase of session reset.
6894 * Will attempt to negotiate SP4_MACH_CRED if krb5i / krb5p auth is used.
6896 int nfs4_proc_exchange_id(struct nfs_client
*clp
, struct rpc_cred
*cred
)
6898 rpc_authflavor_t authflavor
= clp
->cl_rpcclient
->cl_auth
->au_flavor
;
6901 /* try SP4_MACH_CRED if krb5i/p */
6902 if (authflavor
== RPC_AUTH_GSS_KRB5I
||
6903 authflavor
== RPC_AUTH_GSS_KRB5P
) {
6904 status
= _nfs4_proc_exchange_id(clp
, cred
, SP4_MACH_CRED
);
6910 return _nfs4_proc_exchange_id(clp
, cred
, SP4_NONE
);
6913 static int _nfs4_proc_destroy_clientid(struct nfs_client
*clp
,
6914 struct rpc_cred
*cred
)
6916 struct rpc_message msg
= {
6917 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_DESTROY_CLIENTID
],
6923 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
6924 trace_nfs4_destroy_clientid(clp
, status
);
6926 dprintk("NFS: Got error %d from the server %s on "
6927 "DESTROY_CLIENTID.", status
, clp
->cl_hostname
);
6931 static int nfs4_proc_destroy_clientid(struct nfs_client
*clp
,
6932 struct rpc_cred
*cred
)
6937 for (loop
= NFS4_MAX_LOOP_ON_RECOVER
; loop
!= 0; loop
--) {
6938 ret
= _nfs4_proc_destroy_clientid(clp
, cred
);
6940 case -NFS4ERR_DELAY
:
6941 case -NFS4ERR_CLIENTID_BUSY
:
6951 int nfs4_destroy_clientid(struct nfs_client
*clp
)
6953 struct rpc_cred
*cred
;
6956 if (clp
->cl_mvops
->minor_version
< 1)
6958 if (clp
->cl_exchange_flags
== 0)
6960 if (clp
->cl_preserve_clid
)
6962 cred
= nfs4_get_clid_cred(clp
);
6963 ret
= nfs4_proc_destroy_clientid(clp
, cred
);
6968 case -NFS4ERR_STALE_CLIENTID
:
6969 clp
->cl_exchange_flags
= 0;
6975 struct nfs4_get_lease_time_data
{
6976 struct nfs4_get_lease_time_args
*args
;
6977 struct nfs4_get_lease_time_res
*res
;
6978 struct nfs_client
*clp
;
6981 static void nfs4_get_lease_time_prepare(struct rpc_task
*task
,
6984 struct nfs4_get_lease_time_data
*data
=
6985 (struct nfs4_get_lease_time_data
*)calldata
;
6987 dprintk("--> %s\n", __func__
);
6988 /* just setup sequence, do not trigger session recovery
6989 since we're invoked within one */
6990 nfs41_setup_sequence(data
->clp
->cl_session
,
6991 &data
->args
->la_seq_args
,
6992 &data
->res
->lr_seq_res
,
6994 dprintk("<-- %s\n", __func__
);
6998 * Called from nfs4_state_manager thread for session setup, so don't recover
6999 * from sequence operation or clientid errors.
7001 static void nfs4_get_lease_time_done(struct rpc_task
*task
, void *calldata
)
7003 struct nfs4_get_lease_time_data
*data
=
7004 (struct nfs4_get_lease_time_data
*)calldata
;
7006 dprintk("--> %s\n", __func__
);
7007 if (!nfs41_sequence_done(task
, &data
->res
->lr_seq_res
))
7009 switch (task
->tk_status
) {
7010 case -NFS4ERR_DELAY
:
7011 case -NFS4ERR_GRACE
:
7012 dprintk("%s Retry: tk_status %d\n", __func__
, task
->tk_status
);
7013 rpc_delay(task
, NFS4_POLL_RETRY_MIN
);
7014 task
->tk_status
= 0;
7016 case -NFS4ERR_RETRY_UNCACHED_REP
:
7017 rpc_restart_call_prepare(task
);
7020 dprintk("<-- %s\n", __func__
);
7023 static const struct rpc_call_ops nfs4_get_lease_time_ops
= {
7024 .rpc_call_prepare
= nfs4_get_lease_time_prepare
,
7025 .rpc_call_done
= nfs4_get_lease_time_done
,
7028 int nfs4_proc_get_lease_time(struct nfs_client
*clp
, struct nfs_fsinfo
*fsinfo
)
7030 struct rpc_task
*task
;
7031 struct nfs4_get_lease_time_args args
;
7032 struct nfs4_get_lease_time_res res
= {
7033 .lr_fsinfo
= fsinfo
,
7035 struct nfs4_get_lease_time_data data
= {
7040 struct rpc_message msg
= {
7041 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GET_LEASE_TIME
],
7045 struct rpc_task_setup task_setup
= {
7046 .rpc_client
= clp
->cl_rpcclient
,
7047 .rpc_message
= &msg
,
7048 .callback_ops
= &nfs4_get_lease_time_ops
,
7049 .callback_data
= &data
,
7050 .flags
= RPC_TASK_TIMEOUT
,
7054 nfs4_init_sequence(&args
.la_seq_args
, &res
.lr_seq_res
, 0);
7055 nfs4_set_sequence_privileged(&args
.la_seq_args
);
7056 dprintk("--> %s\n", __func__
);
7057 task
= rpc_run_task(&task_setup
);
7060 status
= PTR_ERR(task
);
7062 status
= task
->tk_status
;
7065 dprintk("<-- %s return %d\n", __func__
, status
);
7071 * Initialize the values to be used by the client in CREATE_SESSION
7072 * If nfs4_init_session set the fore channel request and response sizes,
7075 * Set the back channel max_resp_sz_cached to zero to force the client to
7076 * always set csa_cachethis to FALSE because the current implementation
7077 * of the back channel DRC only supports caching the CB_SEQUENCE operation.
7079 static void nfs4_init_channel_attrs(struct nfs41_create_session_args
*args
)
7081 unsigned int max_rqst_sz
, max_resp_sz
;
7083 max_rqst_sz
= NFS_MAX_FILE_IO_SIZE
+ nfs41_maxwrite_overhead
;
7084 max_resp_sz
= NFS_MAX_FILE_IO_SIZE
+ nfs41_maxread_overhead
;
7086 /* Fore channel attributes */
7087 args
->fc_attrs
.max_rqst_sz
= max_rqst_sz
;
7088 args
->fc_attrs
.max_resp_sz
= max_resp_sz
;
7089 args
->fc_attrs
.max_ops
= NFS4_MAX_OPS
;
7090 args
->fc_attrs
.max_reqs
= max_session_slots
;
7092 dprintk("%s: Fore Channel : max_rqst_sz=%u max_resp_sz=%u "
7093 "max_ops=%u max_reqs=%u\n",
7095 args
->fc_attrs
.max_rqst_sz
, args
->fc_attrs
.max_resp_sz
,
7096 args
->fc_attrs
.max_ops
, args
->fc_attrs
.max_reqs
);
7098 /* Back channel attributes */
7099 args
->bc_attrs
.max_rqst_sz
= PAGE_SIZE
;
7100 args
->bc_attrs
.max_resp_sz
= PAGE_SIZE
;
7101 args
->bc_attrs
.max_resp_sz_cached
= 0;
7102 args
->bc_attrs
.max_ops
= NFS4_MAX_BACK_CHANNEL_OPS
;
7103 args
->bc_attrs
.max_reqs
= 1;
7105 dprintk("%s: Back Channel : max_rqst_sz=%u max_resp_sz=%u "
7106 "max_resp_sz_cached=%u max_ops=%u max_reqs=%u\n",
7108 args
->bc_attrs
.max_rqst_sz
, args
->bc_attrs
.max_resp_sz
,
7109 args
->bc_attrs
.max_resp_sz_cached
, args
->bc_attrs
.max_ops
,
7110 args
->bc_attrs
.max_reqs
);
7113 static int nfs4_verify_fore_channel_attrs(struct nfs41_create_session_args
*args
, struct nfs4_session
*session
)
7115 struct nfs4_channel_attrs
*sent
= &args
->fc_attrs
;
7116 struct nfs4_channel_attrs
*rcvd
= &session
->fc_attrs
;
7118 if (rcvd
->max_resp_sz
> sent
->max_resp_sz
)
7121 * Our requested max_ops is the minimum we need; we're not
7122 * prepared to break up compounds into smaller pieces than that.
7123 * So, no point even trying to continue if the server won't
7126 if (rcvd
->max_ops
< sent
->max_ops
)
7128 if (rcvd
->max_reqs
== 0)
7130 if (rcvd
->max_reqs
> NFS4_MAX_SLOT_TABLE
)
7131 rcvd
->max_reqs
= NFS4_MAX_SLOT_TABLE
;
7135 static int nfs4_verify_back_channel_attrs(struct nfs41_create_session_args
*args
, struct nfs4_session
*session
)
7137 struct nfs4_channel_attrs
*sent
= &args
->bc_attrs
;
7138 struct nfs4_channel_attrs
*rcvd
= &session
->bc_attrs
;
7140 if (rcvd
->max_rqst_sz
> sent
->max_rqst_sz
)
7142 if (rcvd
->max_resp_sz
< sent
->max_resp_sz
)
7144 if (rcvd
->max_resp_sz_cached
> sent
->max_resp_sz_cached
)
7146 /* These would render the backchannel useless: */
7147 if (rcvd
->max_ops
!= sent
->max_ops
)
7149 if (rcvd
->max_reqs
!= sent
->max_reqs
)
7154 static int nfs4_verify_channel_attrs(struct nfs41_create_session_args
*args
,
7155 struct nfs4_session
*session
)
7159 ret
= nfs4_verify_fore_channel_attrs(args
, session
);
7162 return nfs4_verify_back_channel_attrs(args
, session
);
7165 static int _nfs4_proc_create_session(struct nfs_client
*clp
,
7166 struct rpc_cred
*cred
)
7168 struct nfs4_session
*session
= clp
->cl_session
;
7169 struct nfs41_create_session_args args
= {
7171 .cb_program
= NFS4_CALLBACK
,
7173 struct nfs41_create_session_res res
= {
7176 struct rpc_message msg
= {
7177 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_CREATE_SESSION
],
7184 nfs4_init_channel_attrs(&args
);
7185 args
.flags
= (SESSION4_PERSIST
| SESSION4_BACK_CHAN
);
7187 status
= rpc_call_sync(session
->clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
7188 trace_nfs4_create_session(clp
, status
);
7191 /* Verify the session's negotiated channel_attrs values */
7192 status
= nfs4_verify_channel_attrs(&args
, session
);
7193 /* Increment the clientid slot sequence id */
7201 * Issues a CREATE_SESSION operation to the server.
7202 * It is the responsibility of the caller to verify the session is
7203 * expired before calling this routine.
7205 int nfs4_proc_create_session(struct nfs_client
*clp
, struct rpc_cred
*cred
)
7209 struct nfs4_session
*session
= clp
->cl_session
;
7211 dprintk("--> %s clp=%p session=%p\n", __func__
, clp
, session
);
7213 status
= _nfs4_proc_create_session(clp
, cred
);
7217 /* Init or reset the session slot tables */
7218 status
= nfs4_setup_session_slot_tables(session
);
7219 dprintk("slot table setup returned %d\n", status
);
7223 ptr
= (unsigned *)&session
->sess_id
.data
[0];
7224 dprintk("%s client>seqid %d sessionid %u:%u:%u:%u\n", __func__
,
7225 clp
->cl_seqid
, ptr
[0], ptr
[1], ptr
[2], ptr
[3]);
7227 dprintk("<-- %s\n", __func__
);
7232 * Issue the over-the-wire RPC DESTROY_SESSION.
7233 * The caller must serialize access to this routine.
7235 int nfs4_proc_destroy_session(struct nfs4_session
*session
,
7236 struct rpc_cred
*cred
)
7238 struct rpc_message msg
= {
7239 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_DESTROY_SESSION
],
7240 .rpc_argp
= session
,
7245 dprintk("--> nfs4_proc_destroy_session\n");
7247 /* session is still being setup */
7248 if (session
->clp
->cl_cons_state
!= NFS_CS_READY
)
7251 status
= rpc_call_sync(session
->clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
7252 trace_nfs4_destroy_session(session
->clp
, status
);
7255 dprintk("NFS: Got error %d from the server on DESTROY_SESSION. "
7256 "Session has been destroyed regardless...\n", status
);
7258 dprintk("<-- nfs4_proc_destroy_session\n");
7263 * Renew the cl_session lease.
7265 struct nfs4_sequence_data
{
7266 struct nfs_client
*clp
;
7267 struct nfs4_sequence_args args
;
7268 struct nfs4_sequence_res res
;
7271 static void nfs41_sequence_release(void *data
)
7273 struct nfs4_sequence_data
*calldata
= data
;
7274 struct nfs_client
*clp
= calldata
->clp
;
7276 if (atomic_read(&clp
->cl_count
) > 1)
7277 nfs4_schedule_state_renewal(clp
);
7278 nfs_put_client(clp
);
7282 static int nfs41_sequence_handle_errors(struct rpc_task
*task
, struct nfs_client
*clp
)
7284 switch(task
->tk_status
) {
7285 case -NFS4ERR_DELAY
:
7286 rpc_delay(task
, NFS4_POLL_RETRY_MAX
);
7289 nfs4_schedule_lease_recovery(clp
);
7294 static void nfs41_sequence_call_done(struct rpc_task
*task
, void *data
)
7296 struct nfs4_sequence_data
*calldata
= data
;
7297 struct nfs_client
*clp
= calldata
->clp
;
7299 if (!nfs41_sequence_done(task
, task
->tk_msg
.rpc_resp
))
7302 trace_nfs4_sequence(clp
, task
->tk_status
);
7303 if (task
->tk_status
< 0) {
7304 dprintk("%s ERROR %d\n", __func__
, task
->tk_status
);
7305 if (atomic_read(&clp
->cl_count
) == 1)
7308 if (nfs41_sequence_handle_errors(task
, clp
) == -EAGAIN
) {
7309 rpc_restart_call_prepare(task
);
7313 dprintk("%s rpc_cred %p\n", __func__
, task
->tk_msg
.rpc_cred
);
7315 dprintk("<-- %s\n", __func__
);
7318 static void nfs41_sequence_prepare(struct rpc_task
*task
, void *data
)
7320 struct nfs4_sequence_data
*calldata
= data
;
7321 struct nfs_client
*clp
= calldata
->clp
;
7322 struct nfs4_sequence_args
*args
;
7323 struct nfs4_sequence_res
*res
;
7325 args
= task
->tk_msg
.rpc_argp
;
7326 res
= task
->tk_msg
.rpc_resp
;
7328 nfs41_setup_sequence(clp
->cl_session
, args
, res
, task
);
7331 static const struct rpc_call_ops nfs41_sequence_ops
= {
7332 .rpc_call_done
= nfs41_sequence_call_done
,
7333 .rpc_call_prepare
= nfs41_sequence_prepare
,
7334 .rpc_release
= nfs41_sequence_release
,
7337 static struct rpc_task
*_nfs41_proc_sequence(struct nfs_client
*clp
,
7338 struct rpc_cred
*cred
,
7341 struct nfs4_sequence_data
*calldata
;
7342 struct rpc_message msg
= {
7343 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SEQUENCE
],
7346 struct rpc_task_setup task_setup_data
= {
7347 .rpc_client
= clp
->cl_rpcclient
,
7348 .rpc_message
= &msg
,
7349 .callback_ops
= &nfs41_sequence_ops
,
7350 .flags
= RPC_TASK_ASYNC
| RPC_TASK_TIMEOUT
,
7353 if (!atomic_inc_not_zero(&clp
->cl_count
))
7354 return ERR_PTR(-EIO
);
7355 calldata
= kzalloc(sizeof(*calldata
), GFP_NOFS
);
7356 if (calldata
== NULL
) {
7357 nfs_put_client(clp
);
7358 return ERR_PTR(-ENOMEM
);
7360 nfs4_init_sequence(&calldata
->args
, &calldata
->res
, 0);
7362 nfs4_set_sequence_privileged(&calldata
->args
);
7363 msg
.rpc_argp
= &calldata
->args
;
7364 msg
.rpc_resp
= &calldata
->res
;
7365 calldata
->clp
= clp
;
7366 task_setup_data
.callback_data
= calldata
;
7368 return rpc_run_task(&task_setup_data
);
7371 static int nfs41_proc_async_sequence(struct nfs_client
*clp
, struct rpc_cred
*cred
, unsigned renew_flags
)
7373 struct rpc_task
*task
;
7376 if ((renew_flags
& NFS4_RENEW_TIMEOUT
) == 0)
7378 task
= _nfs41_proc_sequence(clp
, cred
, false);
7380 ret
= PTR_ERR(task
);
7382 rpc_put_task_async(task
);
7383 dprintk("<-- %s status=%d\n", __func__
, ret
);
7387 static int nfs4_proc_sequence(struct nfs_client
*clp
, struct rpc_cred
*cred
)
7389 struct rpc_task
*task
;
7392 task
= _nfs41_proc_sequence(clp
, cred
, true);
7394 ret
= PTR_ERR(task
);
7397 ret
= rpc_wait_for_completion_task(task
);
7399 struct nfs4_sequence_res
*res
= task
->tk_msg
.rpc_resp
;
7401 if (task
->tk_status
== 0)
7402 nfs41_handle_sequence_flag_errors(clp
, res
->sr_status_flags
);
7403 ret
= task
->tk_status
;
7407 dprintk("<-- %s status=%d\n", __func__
, ret
);
7411 struct nfs4_reclaim_complete_data
{
7412 struct nfs_client
*clp
;
7413 struct nfs41_reclaim_complete_args arg
;
7414 struct nfs41_reclaim_complete_res res
;
7417 static void nfs4_reclaim_complete_prepare(struct rpc_task
*task
, void *data
)
7419 struct nfs4_reclaim_complete_data
*calldata
= data
;
7421 nfs41_setup_sequence(calldata
->clp
->cl_session
,
7422 &calldata
->arg
.seq_args
,
7423 &calldata
->res
.seq_res
,
7427 static int nfs41_reclaim_complete_handle_errors(struct rpc_task
*task
, struct nfs_client
*clp
)
7429 switch(task
->tk_status
) {
7431 case -NFS4ERR_COMPLETE_ALREADY
:
7432 case -NFS4ERR_WRONG_CRED
: /* What to do here? */
7434 case -NFS4ERR_DELAY
:
7435 rpc_delay(task
, NFS4_POLL_RETRY_MAX
);
7437 case -NFS4ERR_RETRY_UNCACHED_REP
:
7440 nfs4_schedule_lease_recovery(clp
);
7445 static void nfs4_reclaim_complete_done(struct rpc_task
*task
, void *data
)
7447 struct nfs4_reclaim_complete_data
*calldata
= data
;
7448 struct nfs_client
*clp
= calldata
->clp
;
7449 struct nfs4_sequence_res
*res
= &calldata
->res
.seq_res
;
7451 dprintk("--> %s\n", __func__
);
7452 if (!nfs41_sequence_done(task
, res
))
7455 trace_nfs4_reclaim_complete(clp
, task
->tk_status
);
7456 if (nfs41_reclaim_complete_handle_errors(task
, clp
) == -EAGAIN
) {
7457 rpc_restart_call_prepare(task
);
7460 dprintk("<-- %s\n", __func__
);
7463 static void nfs4_free_reclaim_complete_data(void *data
)
7465 struct nfs4_reclaim_complete_data
*calldata
= data
;
7470 static const struct rpc_call_ops nfs4_reclaim_complete_call_ops
= {
7471 .rpc_call_prepare
= nfs4_reclaim_complete_prepare
,
7472 .rpc_call_done
= nfs4_reclaim_complete_done
,
7473 .rpc_release
= nfs4_free_reclaim_complete_data
,
7477 * Issue a global reclaim complete.
7479 static int nfs41_proc_reclaim_complete(struct nfs_client
*clp
,
7480 struct rpc_cred
*cred
)
7482 struct nfs4_reclaim_complete_data
*calldata
;
7483 struct rpc_task
*task
;
7484 struct rpc_message msg
= {
7485 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RECLAIM_COMPLETE
],
7488 struct rpc_task_setup task_setup_data
= {
7489 .rpc_client
= clp
->cl_rpcclient
,
7490 .rpc_message
= &msg
,
7491 .callback_ops
= &nfs4_reclaim_complete_call_ops
,
7492 .flags
= RPC_TASK_ASYNC
,
7494 int status
= -ENOMEM
;
7496 dprintk("--> %s\n", __func__
);
7497 calldata
= kzalloc(sizeof(*calldata
), GFP_NOFS
);
7498 if (calldata
== NULL
)
7500 calldata
->clp
= clp
;
7501 calldata
->arg
.one_fs
= 0;
7503 nfs4_init_sequence(&calldata
->arg
.seq_args
, &calldata
->res
.seq_res
, 0);
7504 nfs4_set_sequence_privileged(&calldata
->arg
.seq_args
);
7505 msg
.rpc_argp
= &calldata
->arg
;
7506 msg
.rpc_resp
= &calldata
->res
;
7507 task_setup_data
.callback_data
= calldata
;
7508 task
= rpc_run_task(&task_setup_data
);
7510 status
= PTR_ERR(task
);
7513 status
= nfs4_wait_for_completion_rpc_task(task
);
7515 status
= task
->tk_status
;
7519 dprintk("<-- %s status=%d\n", __func__
, status
);
7524 nfs4_layoutget_prepare(struct rpc_task
*task
, void *calldata
)
7526 struct nfs4_layoutget
*lgp
= calldata
;
7527 struct nfs_server
*server
= NFS_SERVER(lgp
->args
.inode
);
7528 struct nfs4_session
*session
= nfs4_get_session(server
);
7530 dprintk("--> %s\n", __func__
);
7531 /* Note the is a race here, where a CB_LAYOUTRECALL can come in
7532 * right now covering the LAYOUTGET we are about to send.
7533 * However, that is not so catastrophic, and there seems
7534 * to be no way to prevent it completely.
7536 if (nfs41_setup_sequence(session
, &lgp
->args
.seq_args
,
7537 &lgp
->res
.seq_res
, task
))
7539 if (pnfs_choose_layoutget_stateid(&lgp
->args
.stateid
,
7540 NFS_I(lgp
->args
.inode
)->layout
,
7541 lgp
->args
.ctx
->state
)) {
7542 rpc_exit(task
, NFS4_OK
);
7546 static void nfs4_layoutget_done(struct rpc_task
*task
, void *calldata
)
7548 struct nfs4_layoutget
*lgp
= calldata
;
7549 struct inode
*inode
= lgp
->args
.inode
;
7550 struct nfs_server
*server
= NFS_SERVER(inode
);
7551 struct pnfs_layout_hdr
*lo
;
7552 struct nfs4_state
*state
= NULL
;
7553 unsigned long timeo
, now
, giveup
;
7555 dprintk("--> %s tk_status => %d\n", __func__
, -task
->tk_status
);
7557 if (!nfs41_sequence_done(task
, &lgp
->res
.seq_res
))
7560 switch (task
->tk_status
) {
7564 * NFS4ERR_LAYOUTTRYLATER is a conflict with another client
7565 * (or clients) writing to the same RAID stripe
7567 case -NFS4ERR_LAYOUTTRYLATER
:
7569 * NFS4ERR_RECALLCONFLICT is when conflict with self (must recall
7570 * existing layout before getting a new one).
7572 case -NFS4ERR_RECALLCONFLICT
:
7573 timeo
= rpc_get_timeout(task
->tk_client
);
7574 giveup
= lgp
->args
.timestamp
+ timeo
;
7576 if (time_after(giveup
, now
)) {
7577 unsigned long delay
;
7580 * - Not less then NFS4_POLL_RETRY_MIN.
7581 * - One last time a jiffie before we give up
7582 * - exponential backoff (time_now minus start_attempt)
7584 delay
= max_t(unsigned long, NFS4_POLL_RETRY_MIN
,
7585 min((giveup
- now
- 1),
7586 now
- lgp
->args
.timestamp
));
7588 dprintk("%s: NFS4ERR_RECALLCONFLICT waiting %lu\n",
7590 rpc_delay(task
, delay
);
7591 task
->tk_status
= 0;
7592 rpc_restart_call_prepare(task
);
7593 goto out
; /* Do not call nfs4_async_handle_error() */
7596 case -NFS4ERR_EXPIRED
:
7597 case -NFS4ERR_BAD_STATEID
:
7598 spin_lock(&inode
->i_lock
);
7599 lo
= NFS_I(inode
)->layout
;
7600 if (!lo
|| list_empty(&lo
->plh_segs
)) {
7601 spin_unlock(&inode
->i_lock
);
7602 /* If the open stateid was bad, then recover it. */
7603 state
= lgp
->args
.ctx
->state
;
7608 * Mark the bad layout state as invalid, then retry
7609 * with the current stateid.
7611 pnfs_mark_matching_lsegs_invalid(lo
, &head
, NULL
);
7612 spin_unlock(&inode
->i_lock
);
7613 pnfs_free_lseg_list(&head
);
7615 task
->tk_status
= 0;
7616 rpc_restart_call_prepare(task
);
7619 if (nfs4_async_handle_error(task
, server
, state
, NULL
) == -EAGAIN
)
7620 rpc_restart_call_prepare(task
);
7622 dprintk("<-- %s\n", __func__
);
7625 static size_t max_response_pages(struct nfs_server
*server
)
7627 u32 max_resp_sz
= server
->nfs_client
->cl_session
->fc_attrs
.max_resp_sz
;
7628 return nfs_page_array_len(0, max_resp_sz
);
7631 static void nfs4_free_pages(struct page
**pages
, size_t size
)
7638 for (i
= 0; i
< size
; i
++) {
7641 __free_page(pages
[i
]);
7646 static struct page
**nfs4_alloc_pages(size_t size
, gfp_t gfp_flags
)
7648 struct page
**pages
;
7651 pages
= kcalloc(size
, sizeof(struct page
*), gfp_flags
);
7653 dprintk("%s: can't alloc array of %zu pages\n", __func__
, size
);
7657 for (i
= 0; i
< size
; i
++) {
7658 pages
[i
] = alloc_page(gfp_flags
);
7660 dprintk("%s: failed to allocate page\n", __func__
);
7661 nfs4_free_pages(pages
, size
);
7669 static void nfs4_layoutget_release(void *calldata
)
7671 struct nfs4_layoutget
*lgp
= calldata
;
7672 struct inode
*inode
= lgp
->args
.inode
;
7673 struct nfs_server
*server
= NFS_SERVER(inode
);
7674 size_t max_pages
= max_response_pages(server
);
7676 dprintk("--> %s\n", __func__
);
7677 nfs4_free_pages(lgp
->args
.layout
.pages
, max_pages
);
7678 pnfs_put_layout_hdr(NFS_I(inode
)->layout
);
7679 put_nfs_open_context(lgp
->args
.ctx
);
7681 dprintk("<-- %s\n", __func__
);
7684 static const struct rpc_call_ops nfs4_layoutget_call_ops
= {
7685 .rpc_call_prepare
= nfs4_layoutget_prepare
,
7686 .rpc_call_done
= nfs4_layoutget_done
,
7687 .rpc_release
= nfs4_layoutget_release
,
7690 struct pnfs_layout_segment
*
7691 nfs4_proc_layoutget(struct nfs4_layoutget
*lgp
, gfp_t gfp_flags
)
7693 struct inode
*inode
= lgp
->args
.inode
;
7694 struct nfs_server
*server
= NFS_SERVER(inode
);
7695 size_t max_pages
= max_response_pages(server
);
7696 struct rpc_task
*task
;
7697 struct rpc_message msg
= {
7698 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LAYOUTGET
],
7699 .rpc_argp
= &lgp
->args
,
7700 .rpc_resp
= &lgp
->res
,
7701 .rpc_cred
= lgp
->cred
,
7703 struct rpc_task_setup task_setup_data
= {
7704 .rpc_client
= server
->client
,
7705 .rpc_message
= &msg
,
7706 .callback_ops
= &nfs4_layoutget_call_ops
,
7707 .callback_data
= lgp
,
7708 .flags
= RPC_TASK_ASYNC
,
7710 struct pnfs_layout_segment
*lseg
= NULL
;
7713 dprintk("--> %s\n", __func__
);
7715 lgp
->args
.layout
.pages
= nfs4_alloc_pages(max_pages
, gfp_flags
);
7716 if (!lgp
->args
.layout
.pages
) {
7717 nfs4_layoutget_release(lgp
);
7718 return ERR_PTR(-ENOMEM
);
7720 lgp
->args
.layout
.pglen
= max_pages
* PAGE_SIZE
;
7721 lgp
->args
.timestamp
= jiffies
;
7723 lgp
->res
.layoutp
= &lgp
->args
.layout
;
7724 lgp
->res
.seq_res
.sr_slot
= NULL
;
7725 nfs4_init_sequence(&lgp
->args
.seq_args
, &lgp
->res
.seq_res
, 0);
7727 /* nfs4_layoutget_release calls pnfs_put_layout_hdr */
7728 pnfs_get_layout_hdr(NFS_I(inode
)->layout
);
7730 task
= rpc_run_task(&task_setup_data
);
7732 return ERR_CAST(task
);
7733 status
= nfs4_wait_for_completion_rpc_task(task
);
7735 status
= task
->tk_status
;
7736 trace_nfs4_layoutget(lgp
->args
.ctx
,
7740 /* if layoutp->len is 0, nfs4_layoutget_prepare called rpc_exit */
7741 if (status
== 0 && lgp
->res
.layoutp
->len
)
7742 lseg
= pnfs_layout_process(lgp
);
7744 dprintk("<-- %s status=%d\n", __func__
, status
);
7746 return ERR_PTR(status
);
7751 nfs4_layoutreturn_prepare(struct rpc_task
*task
, void *calldata
)
7753 struct nfs4_layoutreturn
*lrp
= calldata
;
7755 dprintk("--> %s\n", __func__
);
7756 nfs41_setup_sequence(lrp
->clp
->cl_session
,
7757 &lrp
->args
.seq_args
,
7762 static void nfs4_layoutreturn_done(struct rpc_task
*task
, void *calldata
)
7764 struct nfs4_layoutreturn
*lrp
= calldata
;
7765 struct nfs_server
*server
;
7767 dprintk("--> %s\n", __func__
);
7769 if (!nfs41_sequence_done(task
, &lrp
->res
.seq_res
))
7772 server
= NFS_SERVER(lrp
->args
.inode
);
7773 switch (task
->tk_status
) {
7775 task
->tk_status
= 0;
7778 case -NFS4ERR_DELAY
:
7779 if (nfs4_async_handle_error(task
, server
, NULL
, NULL
) != -EAGAIN
)
7781 rpc_restart_call_prepare(task
);
7784 dprintk("<-- %s\n", __func__
);
7787 static void nfs4_layoutreturn_release(void *calldata
)
7789 struct nfs4_layoutreturn
*lrp
= calldata
;
7790 struct pnfs_layout_hdr
*lo
= lrp
->args
.layout
;
7792 dprintk("--> %s\n", __func__
);
7793 spin_lock(&lo
->plh_inode
->i_lock
);
7794 if (lrp
->res
.lrs_present
)
7795 pnfs_set_layout_stateid(lo
, &lrp
->res
.stateid
, true);
7796 lo
->plh_block_lgets
--;
7797 spin_unlock(&lo
->plh_inode
->i_lock
);
7798 pnfs_put_layout_hdr(lrp
->args
.layout
);
7800 dprintk("<-- %s\n", __func__
);
7803 static const struct rpc_call_ops nfs4_layoutreturn_call_ops
= {
7804 .rpc_call_prepare
= nfs4_layoutreturn_prepare
,
7805 .rpc_call_done
= nfs4_layoutreturn_done
,
7806 .rpc_release
= nfs4_layoutreturn_release
,
7809 int nfs4_proc_layoutreturn(struct nfs4_layoutreturn
*lrp
)
7811 struct rpc_task
*task
;
7812 struct rpc_message msg
= {
7813 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LAYOUTRETURN
],
7814 .rpc_argp
= &lrp
->args
,
7815 .rpc_resp
= &lrp
->res
,
7816 .rpc_cred
= lrp
->cred
,
7818 struct rpc_task_setup task_setup_data
= {
7819 .rpc_client
= NFS_SERVER(lrp
->args
.inode
)->client
,
7820 .rpc_message
= &msg
,
7821 .callback_ops
= &nfs4_layoutreturn_call_ops
,
7822 .callback_data
= lrp
,
7826 dprintk("--> %s\n", __func__
);
7827 nfs4_init_sequence(&lrp
->args
.seq_args
, &lrp
->res
.seq_res
, 1);
7828 task
= rpc_run_task(&task_setup_data
);
7830 return PTR_ERR(task
);
7831 status
= task
->tk_status
;
7832 trace_nfs4_layoutreturn(lrp
->args
.inode
, status
);
7833 dprintk("<-- %s status=%d\n", __func__
, status
);
7839 _nfs4_proc_getdeviceinfo(struct nfs_server
*server
,
7840 struct pnfs_device
*pdev
,
7841 struct rpc_cred
*cred
)
7843 struct nfs4_getdeviceinfo_args args
= {
7846 struct nfs4_getdeviceinfo_res res
= {
7849 struct rpc_message msg
= {
7850 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GETDEVICEINFO
],
7857 dprintk("--> %s\n", __func__
);
7858 status
= nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
7859 dprintk("<-- %s status=%d\n", __func__
, status
);
7864 int nfs4_proc_getdeviceinfo(struct nfs_server
*server
,
7865 struct pnfs_device
*pdev
,
7866 struct rpc_cred
*cred
)
7868 struct nfs4_exception exception
= { };
7872 err
= nfs4_handle_exception(server
,
7873 _nfs4_proc_getdeviceinfo(server
, pdev
, cred
),
7875 } while (exception
.retry
);
7878 EXPORT_SYMBOL_GPL(nfs4_proc_getdeviceinfo
);
7880 static void nfs4_layoutcommit_prepare(struct rpc_task
*task
, void *calldata
)
7882 struct nfs4_layoutcommit_data
*data
= calldata
;
7883 struct nfs_server
*server
= NFS_SERVER(data
->args
.inode
);
7884 struct nfs4_session
*session
= nfs4_get_session(server
);
7886 nfs41_setup_sequence(session
,
7887 &data
->args
.seq_args
,
7893 nfs4_layoutcommit_done(struct rpc_task
*task
, void *calldata
)
7895 struct nfs4_layoutcommit_data
*data
= calldata
;
7896 struct nfs_server
*server
= NFS_SERVER(data
->args
.inode
);
7898 if (!nfs41_sequence_done(task
, &data
->res
.seq_res
))
7901 switch (task
->tk_status
) { /* Just ignore these failures */
7902 case -NFS4ERR_DELEG_REVOKED
: /* layout was recalled */
7903 case -NFS4ERR_BADIOMODE
: /* no IOMODE_RW layout for range */
7904 case -NFS4ERR_BADLAYOUT
: /* no layout */
7905 case -NFS4ERR_GRACE
: /* loca_recalim always false */
7906 task
->tk_status
= 0;
7910 if (nfs4_async_handle_error(task
, server
, NULL
, NULL
) == -EAGAIN
) {
7911 rpc_restart_call_prepare(task
);
7917 static void nfs4_layoutcommit_release(void *calldata
)
7919 struct nfs4_layoutcommit_data
*data
= calldata
;
7921 pnfs_cleanup_layoutcommit(data
);
7922 nfs_post_op_update_inode_force_wcc(data
->args
.inode
,
7924 put_rpccred(data
->cred
);
7928 static const struct rpc_call_ops nfs4_layoutcommit_ops
= {
7929 .rpc_call_prepare
= nfs4_layoutcommit_prepare
,
7930 .rpc_call_done
= nfs4_layoutcommit_done
,
7931 .rpc_release
= nfs4_layoutcommit_release
,
7935 nfs4_proc_layoutcommit(struct nfs4_layoutcommit_data
*data
, bool sync
)
7937 struct rpc_message msg
= {
7938 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LAYOUTCOMMIT
],
7939 .rpc_argp
= &data
->args
,
7940 .rpc_resp
= &data
->res
,
7941 .rpc_cred
= data
->cred
,
7943 struct rpc_task_setup task_setup_data
= {
7944 .task
= &data
->task
,
7945 .rpc_client
= NFS_CLIENT(data
->args
.inode
),
7946 .rpc_message
= &msg
,
7947 .callback_ops
= &nfs4_layoutcommit_ops
,
7948 .callback_data
= data
,
7949 .flags
= RPC_TASK_ASYNC
,
7951 struct rpc_task
*task
;
7954 dprintk("NFS: %4d initiating layoutcommit call. sync %d "
7955 "lbw: %llu inode %lu\n",
7956 data
->task
.tk_pid
, sync
,
7957 data
->args
.lastbytewritten
,
7958 data
->args
.inode
->i_ino
);
7960 nfs4_init_sequence(&data
->args
.seq_args
, &data
->res
.seq_res
, 1);
7961 task
= rpc_run_task(&task_setup_data
);
7963 return PTR_ERR(task
);
7966 status
= nfs4_wait_for_completion_rpc_task(task
);
7969 status
= task
->tk_status
;
7970 trace_nfs4_layoutcommit(data
->args
.inode
, status
);
7972 dprintk("%s: status %d\n", __func__
, status
);
7978 * Use the state managment nfs_client cl_rpcclient, which uses krb5i (if
7979 * possible) as per RFC3530bis and RFC5661 Security Considerations sections
7982 _nfs41_proc_secinfo_no_name(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
7983 struct nfs_fsinfo
*info
,
7984 struct nfs4_secinfo_flavors
*flavors
, bool use_integrity
)
7986 struct nfs41_secinfo_no_name_args args
= {
7987 .style
= SECINFO_STYLE_CURRENT_FH
,
7989 struct nfs4_secinfo_res res
= {
7992 struct rpc_message msg
= {
7993 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SECINFO_NO_NAME
],
7997 struct rpc_clnt
*clnt
= server
->client
;
7998 struct rpc_cred
*cred
= NULL
;
8001 if (use_integrity
) {
8002 clnt
= server
->nfs_client
->cl_rpcclient
;
8003 cred
= nfs4_get_clid_cred(server
->nfs_client
);
8004 msg
.rpc_cred
= cred
;
8007 dprintk("--> %s\n", __func__
);
8008 status
= nfs4_call_sync(clnt
, server
, &msg
, &args
.seq_args
,
8010 dprintk("<-- %s status=%d\n", __func__
, status
);
8019 nfs41_proc_secinfo_no_name(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
8020 struct nfs_fsinfo
*info
, struct nfs4_secinfo_flavors
*flavors
)
8022 struct nfs4_exception exception
= { };
8025 /* first try using integrity protection */
8026 err
= -NFS4ERR_WRONGSEC
;
8028 /* try to use integrity protection with machine cred */
8029 if (_nfs4_is_integrity_protected(server
->nfs_client
))
8030 err
= _nfs41_proc_secinfo_no_name(server
, fhandle
, info
,
8034 * if unable to use integrity protection, or SECINFO with
8035 * integrity protection returns NFS4ERR_WRONGSEC (which is
8036 * disallowed by spec, but exists in deployed servers) use
8037 * the current filesystem's rpc_client and the user cred.
8039 if (err
== -NFS4ERR_WRONGSEC
)
8040 err
= _nfs41_proc_secinfo_no_name(server
, fhandle
, info
,
8045 case -NFS4ERR_WRONGSEC
:
8049 err
= nfs4_handle_exception(server
, err
, &exception
);
8051 } while (exception
.retry
);
8057 nfs41_find_root_sec(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
8058 struct nfs_fsinfo
*info
)
8062 rpc_authflavor_t flavor
= RPC_AUTH_MAXFLAVOR
;
8063 struct nfs4_secinfo_flavors
*flavors
;
8064 struct nfs4_secinfo4
*secinfo
;
8067 page
= alloc_page(GFP_KERNEL
);
8073 flavors
= page_address(page
);
8074 err
= nfs41_proc_secinfo_no_name(server
, fhandle
, info
, flavors
);
8077 * Fall back on "guess and check" method if
8078 * the server doesn't support SECINFO_NO_NAME
8080 if (err
== -NFS4ERR_WRONGSEC
|| err
== -ENOTSUPP
) {
8081 err
= nfs4_find_root_sec(server
, fhandle
, info
);
8087 for (i
= 0; i
< flavors
->num_flavors
; i
++) {
8088 secinfo
= &flavors
->flavors
[i
];
8090 switch (secinfo
->flavor
) {
8094 flavor
= rpcauth_get_pseudoflavor(secinfo
->flavor
,
8095 &secinfo
->flavor_info
);
8098 flavor
= RPC_AUTH_MAXFLAVOR
;
8102 if (!nfs_auth_info_match(&server
->auth_info
, flavor
))
8103 flavor
= RPC_AUTH_MAXFLAVOR
;
8105 if (flavor
!= RPC_AUTH_MAXFLAVOR
) {
8106 err
= nfs4_lookup_root_sec(server
, fhandle
,
8113 if (flavor
== RPC_AUTH_MAXFLAVOR
)
8124 static int _nfs41_test_stateid(struct nfs_server
*server
,
8125 nfs4_stateid
*stateid
,
8126 struct rpc_cred
*cred
)
8129 struct nfs41_test_stateid_args args
= {
8132 struct nfs41_test_stateid_res res
;
8133 struct rpc_message msg
= {
8134 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_TEST_STATEID
],
8139 struct rpc_clnt
*rpc_client
= server
->client
;
8141 nfs4_state_protect(server
->nfs_client
, NFS_SP4_MACH_CRED_STATEID
,
8144 dprintk("NFS call test_stateid %p\n", stateid
);
8145 nfs4_init_sequence(&args
.seq_args
, &res
.seq_res
, 0);
8146 nfs4_set_sequence_privileged(&args
.seq_args
);
8147 status
= nfs4_call_sync_sequence(rpc_client
, server
, &msg
,
8148 &args
.seq_args
, &res
.seq_res
);
8149 if (status
!= NFS_OK
) {
8150 dprintk("NFS reply test_stateid: failed, %d\n", status
);
8153 dprintk("NFS reply test_stateid: succeeded, %d\n", -res
.status
);
8158 * nfs41_test_stateid - perform a TEST_STATEID operation
8160 * @server: server / transport on which to perform the operation
8161 * @stateid: state ID to test
8164 * Returns NFS_OK if the server recognizes that "stateid" is valid.
8165 * Otherwise a negative NFS4ERR value is returned if the operation
8166 * failed or the state ID is not currently valid.
8168 static int nfs41_test_stateid(struct nfs_server
*server
,
8169 nfs4_stateid
*stateid
,
8170 struct rpc_cred
*cred
)
8172 struct nfs4_exception exception
= { };
8175 err
= _nfs41_test_stateid(server
, stateid
, cred
);
8176 if (err
!= -NFS4ERR_DELAY
)
8178 nfs4_handle_exception(server
, err
, &exception
);
8179 } while (exception
.retry
);
8183 struct nfs_free_stateid_data
{
8184 struct nfs_server
*server
;
8185 struct nfs41_free_stateid_args args
;
8186 struct nfs41_free_stateid_res res
;
8189 static void nfs41_free_stateid_prepare(struct rpc_task
*task
, void *calldata
)
8191 struct nfs_free_stateid_data
*data
= calldata
;
8192 nfs41_setup_sequence(nfs4_get_session(data
->server
),
8193 &data
->args
.seq_args
,
8198 static void nfs41_free_stateid_done(struct rpc_task
*task
, void *calldata
)
8200 struct nfs_free_stateid_data
*data
= calldata
;
8202 nfs41_sequence_done(task
, &data
->res
.seq_res
);
8204 switch (task
->tk_status
) {
8205 case -NFS4ERR_DELAY
:
8206 if (nfs4_async_handle_error(task
, data
->server
, NULL
, NULL
) == -EAGAIN
)
8207 rpc_restart_call_prepare(task
);
8211 static void nfs41_free_stateid_release(void *calldata
)
8216 static const struct rpc_call_ops nfs41_free_stateid_ops
= {
8217 .rpc_call_prepare
= nfs41_free_stateid_prepare
,
8218 .rpc_call_done
= nfs41_free_stateid_done
,
8219 .rpc_release
= nfs41_free_stateid_release
,
8222 static struct rpc_task
*_nfs41_free_stateid(struct nfs_server
*server
,
8223 nfs4_stateid
*stateid
,
8224 struct rpc_cred
*cred
,
8227 struct rpc_message msg
= {
8228 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_FREE_STATEID
],
8231 struct rpc_task_setup task_setup
= {
8232 .rpc_client
= server
->client
,
8233 .rpc_message
= &msg
,
8234 .callback_ops
= &nfs41_free_stateid_ops
,
8235 .flags
= RPC_TASK_ASYNC
,
8237 struct nfs_free_stateid_data
*data
;
8239 nfs4_state_protect(server
->nfs_client
, NFS_SP4_MACH_CRED_STATEID
,
8240 &task_setup
.rpc_client
, &msg
);
8242 dprintk("NFS call free_stateid %p\n", stateid
);
8243 data
= kmalloc(sizeof(*data
), GFP_NOFS
);
8245 return ERR_PTR(-ENOMEM
);
8246 data
->server
= server
;
8247 nfs4_stateid_copy(&data
->args
.stateid
, stateid
);
8249 task_setup
.callback_data
= data
;
8251 msg
.rpc_argp
= &data
->args
;
8252 msg
.rpc_resp
= &data
->res
;
8253 nfs4_init_sequence(&data
->args
.seq_args
, &data
->res
.seq_res
, 0);
8255 nfs4_set_sequence_privileged(&data
->args
.seq_args
);
8257 return rpc_run_task(&task_setup
);
8261 * nfs41_free_stateid - perform a FREE_STATEID operation
8263 * @server: server / transport on which to perform the operation
8264 * @stateid: state ID to release
8267 * Returns NFS_OK if the server freed "stateid". Otherwise a
8268 * negative NFS4ERR value is returned.
8270 static int nfs41_free_stateid(struct nfs_server
*server
,
8271 nfs4_stateid
*stateid
,
8272 struct rpc_cred
*cred
)
8274 struct rpc_task
*task
;
8277 task
= _nfs41_free_stateid(server
, stateid
, cred
, true);
8279 return PTR_ERR(task
);
8280 ret
= rpc_wait_for_completion_task(task
);
8282 ret
= task
->tk_status
;
8288 nfs41_free_lock_state(struct nfs_server
*server
, struct nfs4_lock_state
*lsp
)
8290 struct rpc_task
*task
;
8291 struct rpc_cred
*cred
= lsp
->ls_state
->owner
->so_cred
;
8293 task
= _nfs41_free_stateid(server
, &lsp
->ls_stateid
, cred
, false);
8294 nfs4_free_lock_state(server
, lsp
);
8300 static bool nfs41_match_stateid(const nfs4_stateid
*s1
,
8301 const nfs4_stateid
*s2
)
8303 if (memcmp(s1
->other
, s2
->other
, sizeof(s1
->other
)) != 0)
8306 if (s1
->seqid
== s2
->seqid
)
8308 if (s1
->seqid
== 0 || s2
->seqid
== 0)
8314 #endif /* CONFIG_NFS_V4_1 */
8316 static bool nfs4_match_stateid(const nfs4_stateid
*s1
,
8317 const nfs4_stateid
*s2
)
8319 return nfs4_stateid_match(s1
, s2
);
8323 static const struct nfs4_state_recovery_ops nfs40_reboot_recovery_ops
= {
8324 .owner_flag_bit
= NFS_OWNER_RECLAIM_REBOOT
,
8325 .state_flag_bit
= NFS_STATE_RECLAIM_REBOOT
,
8326 .recover_open
= nfs4_open_reclaim
,
8327 .recover_lock
= nfs4_lock_reclaim
,
8328 .establish_clid
= nfs4_init_clientid
,
8329 .detect_trunking
= nfs40_discover_server_trunking
,
8332 #if defined(CONFIG_NFS_V4_1)
8333 static const struct nfs4_state_recovery_ops nfs41_reboot_recovery_ops
= {
8334 .owner_flag_bit
= NFS_OWNER_RECLAIM_REBOOT
,
8335 .state_flag_bit
= NFS_STATE_RECLAIM_REBOOT
,
8336 .recover_open
= nfs4_open_reclaim
,
8337 .recover_lock
= nfs4_lock_reclaim
,
8338 .establish_clid
= nfs41_init_clientid
,
8339 .reclaim_complete
= nfs41_proc_reclaim_complete
,
8340 .detect_trunking
= nfs41_discover_server_trunking
,
8342 #endif /* CONFIG_NFS_V4_1 */
8344 static const struct nfs4_state_recovery_ops nfs40_nograce_recovery_ops
= {
8345 .owner_flag_bit
= NFS_OWNER_RECLAIM_NOGRACE
,
8346 .state_flag_bit
= NFS_STATE_RECLAIM_NOGRACE
,
8347 .recover_open
= nfs40_open_expired
,
8348 .recover_lock
= nfs4_lock_expired
,
8349 .establish_clid
= nfs4_init_clientid
,
8352 #if defined(CONFIG_NFS_V4_1)
8353 static const struct nfs4_state_recovery_ops nfs41_nograce_recovery_ops
= {
8354 .owner_flag_bit
= NFS_OWNER_RECLAIM_NOGRACE
,
8355 .state_flag_bit
= NFS_STATE_RECLAIM_NOGRACE
,
8356 .recover_open
= nfs41_open_expired
,
8357 .recover_lock
= nfs41_lock_expired
,
8358 .establish_clid
= nfs41_init_clientid
,
8360 #endif /* CONFIG_NFS_V4_1 */
8362 static const struct nfs4_state_maintenance_ops nfs40_state_renewal_ops
= {
8363 .sched_state_renewal
= nfs4_proc_async_renew
,
8364 .get_state_renewal_cred_locked
= nfs4_get_renew_cred_locked
,
8365 .renew_lease
= nfs4_proc_renew
,
8368 #if defined(CONFIG_NFS_V4_1)
8369 static const struct nfs4_state_maintenance_ops nfs41_state_renewal_ops
= {
8370 .sched_state_renewal
= nfs41_proc_async_sequence
,
8371 .get_state_renewal_cred_locked
= nfs4_get_machine_cred_locked
,
8372 .renew_lease
= nfs4_proc_sequence
,
8376 static const struct nfs4_mig_recovery_ops nfs40_mig_recovery_ops
= {
8377 .get_locations
= _nfs40_proc_get_locations
,
8378 .fsid_present
= _nfs40_proc_fsid_present
,
8381 #if defined(CONFIG_NFS_V4_1)
8382 static const struct nfs4_mig_recovery_ops nfs41_mig_recovery_ops
= {
8383 .get_locations
= _nfs41_proc_get_locations
,
8384 .fsid_present
= _nfs41_proc_fsid_present
,
8386 #endif /* CONFIG_NFS_V4_1 */
8388 static const struct nfs4_minor_version_ops nfs_v4_0_minor_ops
= {
8390 .init_caps
= NFS_CAP_READDIRPLUS
8391 | NFS_CAP_ATOMIC_OPEN
8392 | NFS_CAP_CHANGE_ATTR
8393 | NFS_CAP_POSIX_LOCK
,
8394 .init_client
= nfs40_init_client
,
8395 .shutdown_client
= nfs40_shutdown_client
,
8396 .match_stateid
= nfs4_match_stateid
,
8397 .find_root_sec
= nfs4_find_root_sec
,
8398 .free_lock_state
= nfs4_release_lockowner
,
8399 .call_sync_ops
= &nfs40_call_sync_ops
,
8400 .reboot_recovery_ops
= &nfs40_reboot_recovery_ops
,
8401 .nograce_recovery_ops
= &nfs40_nograce_recovery_ops
,
8402 .state_renewal_ops
= &nfs40_state_renewal_ops
,
8403 .mig_recovery_ops
= &nfs40_mig_recovery_ops
,
8406 #if defined(CONFIG_NFS_V4_1)
8407 static const struct nfs4_minor_version_ops nfs_v4_1_minor_ops
= {
8409 .init_caps
= NFS_CAP_READDIRPLUS
8410 | NFS_CAP_ATOMIC_OPEN
8411 | NFS_CAP_CHANGE_ATTR
8412 | NFS_CAP_POSIX_LOCK
8413 | NFS_CAP_STATEID_NFSV41
8414 | NFS_CAP_ATOMIC_OPEN_V1
,
8415 .init_client
= nfs41_init_client
,
8416 .shutdown_client
= nfs41_shutdown_client
,
8417 .match_stateid
= nfs41_match_stateid
,
8418 .find_root_sec
= nfs41_find_root_sec
,
8419 .free_lock_state
= nfs41_free_lock_state
,
8420 .call_sync_ops
= &nfs41_call_sync_ops
,
8421 .reboot_recovery_ops
= &nfs41_reboot_recovery_ops
,
8422 .nograce_recovery_ops
= &nfs41_nograce_recovery_ops
,
8423 .state_renewal_ops
= &nfs41_state_renewal_ops
,
8424 .mig_recovery_ops
= &nfs41_mig_recovery_ops
,
8428 #if defined(CONFIG_NFS_V4_2)
8429 static const struct nfs4_minor_version_ops nfs_v4_2_minor_ops
= {
8431 .init_caps
= NFS_CAP_READDIRPLUS
8432 | NFS_CAP_ATOMIC_OPEN
8433 | NFS_CAP_CHANGE_ATTR
8434 | NFS_CAP_POSIX_LOCK
8435 | NFS_CAP_STATEID_NFSV41
8436 | NFS_CAP_ATOMIC_OPEN_V1
8438 .init_client
= nfs41_init_client
,
8439 .shutdown_client
= nfs41_shutdown_client
,
8440 .match_stateid
= nfs41_match_stateid
,
8441 .find_root_sec
= nfs41_find_root_sec
,
8442 .free_lock_state
= nfs41_free_lock_state
,
8443 .call_sync_ops
= &nfs41_call_sync_ops
,
8444 .reboot_recovery_ops
= &nfs41_reboot_recovery_ops
,
8445 .nograce_recovery_ops
= &nfs41_nograce_recovery_ops
,
8446 .state_renewal_ops
= &nfs41_state_renewal_ops
,
8450 const struct nfs4_minor_version_ops
*nfs_v4_minor_ops
[] = {
8451 [0] = &nfs_v4_0_minor_ops
,
8452 #if defined(CONFIG_NFS_V4_1)
8453 [1] = &nfs_v4_1_minor_ops
,
8455 #if defined(CONFIG_NFS_V4_2)
8456 [2] = &nfs_v4_2_minor_ops
,
8460 static const struct inode_operations nfs4_dir_inode_operations
= {
8461 .create
= nfs_create
,
8462 .lookup
= nfs_lookup
,
8463 .atomic_open
= nfs_atomic_open
,
8465 .unlink
= nfs_unlink
,
8466 .symlink
= nfs_symlink
,
8470 .rename
= nfs_rename
,
8471 .permission
= nfs_permission
,
8472 .getattr
= nfs_getattr
,
8473 .setattr
= nfs_setattr
,
8474 .getxattr
= generic_getxattr
,
8475 .setxattr
= generic_setxattr
,
8476 .listxattr
= generic_listxattr
,
8477 .removexattr
= generic_removexattr
,
8480 static const struct inode_operations nfs4_file_inode_operations
= {
8481 .permission
= nfs_permission
,
8482 .getattr
= nfs_getattr
,
8483 .setattr
= nfs_setattr
,
8484 .getxattr
= generic_getxattr
,
8485 .setxattr
= generic_setxattr
,
8486 .listxattr
= generic_listxattr
,
8487 .removexattr
= generic_removexattr
,
8490 const struct nfs_rpc_ops nfs_v4_clientops
= {
8491 .version
= 4, /* protocol version */
8492 .dentry_ops
= &nfs4_dentry_operations
,
8493 .dir_inode_ops
= &nfs4_dir_inode_operations
,
8494 .file_inode_ops
= &nfs4_file_inode_operations
,
8495 .file_ops
= &nfs4_file_operations
,
8496 .getroot
= nfs4_proc_get_root
,
8497 .submount
= nfs4_submount
,
8498 .try_mount
= nfs4_try_mount
,
8499 .getattr
= nfs4_proc_getattr
,
8500 .setattr
= nfs4_proc_setattr
,
8501 .lookup
= nfs4_proc_lookup
,
8502 .access
= nfs4_proc_access
,
8503 .readlink
= nfs4_proc_readlink
,
8504 .create
= nfs4_proc_create
,
8505 .remove
= nfs4_proc_remove
,
8506 .unlink_setup
= nfs4_proc_unlink_setup
,
8507 .unlink_rpc_prepare
= nfs4_proc_unlink_rpc_prepare
,
8508 .unlink_done
= nfs4_proc_unlink_done
,
8509 .rename_setup
= nfs4_proc_rename_setup
,
8510 .rename_rpc_prepare
= nfs4_proc_rename_rpc_prepare
,
8511 .rename_done
= nfs4_proc_rename_done
,
8512 .link
= nfs4_proc_link
,
8513 .symlink
= nfs4_proc_symlink
,
8514 .mkdir
= nfs4_proc_mkdir
,
8515 .rmdir
= nfs4_proc_remove
,
8516 .readdir
= nfs4_proc_readdir
,
8517 .mknod
= nfs4_proc_mknod
,
8518 .statfs
= nfs4_proc_statfs
,
8519 .fsinfo
= nfs4_proc_fsinfo
,
8520 .pathconf
= nfs4_proc_pathconf
,
8521 .set_capabilities
= nfs4_server_capabilities
,
8522 .decode_dirent
= nfs4_decode_dirent
,
8523 .pgio_rpc_prepare
= nfs4_proc_pgio_rpc_prepare
,
8524 .read_setup
= nfs4_proc_read_setup
,
8525 .read_done
= nfs4_read_done
,
8526 .write_setup
= nfs4_proc_write_setup
,
8527 .write_done
= nfs4_write_done
,
8528 .commit_setup
= nfs4_proc_commit_setup
,
8529 .commit_rpc_prepare
= nfs4_proc_commit_rpc_prepare
,
8530 .commit_done
= nfs4_commit_done
,
8531 .lock
= nfs4_proc_lock
,
8532 .clear_acl_cache
= nfs4_zap_acl_attr
,
8533 .close_context
= nfs4_close_context
,
8534 .open_context
= nfs4_atomic_open
,
8535 .have_delegation
= nfs4_have_delegation
,
8536 .return_delegation
= nfs4_inode_return_delegation
,
8537 .alloc_client
= nfs4_alloc_client
,
8538 .init_client
= nfs4_init_client
,
8539 .free_client
= nfs4_free_client
,
8540 .create_server
= nfs4_create_server
,
8541 .clone_server
= nfs_clone_server
,
8544 static const struct xattr_handler nfs4_xattr_nfs4_acl_handler
= {
8545 .prefix
= XATTR_NAME_NFSV4_ACL
,
8546 .list
= nfs4_xattr_list_nfs4_acl
,
8547 .get
= nfs4_xattr_get_nfs4_acl
,
8548 .set
= nfs4_xattr_set_nfs4_acl
,
8551 const struct xattr_handler
*nfs4_xattr_handlers
[] = {
8552 &nfs4_xattr_nfs4_acl_handler
,
8553 #ifdef CONFIG_NFS_V4_SECURITY_LABEL
8554 &nfs4_xattr_nfs4_label_handler
,