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
*);
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 int nfs4_delay(struct rpc_clnt
*clnt
, long *timeout
)
324 *timeout
= NFS4_POLL_RETRY_MIN
;
325 if (*timeout
> NFS4_POLL_RETRY_MAX
)
326 *timeout
= NFS4_POLL_RETRY_MAX
;
327 freezable_schedule_timeout_killable_unsafe(*timeout
);
328 if (fatal_signal_pending(current
))
334 /* This is the error handling routine for processes that are allowed
337 static int nfs4_handle_exception(struct nfs_server
*server
, int errorcode
, struct nfs4_exception
*exception
)
339 struct nfs_client
*clp
= server
->nfs_client
;
340 struct nfs4_state
*state
= exception
->state
;
341 struct inode
*inode
= exception
->inode
;
344 exception
->retry
= 0;
348 case -NFS4ERR_OPENMODE
:
349 if (inode
&& nfs4_have_delegation(inode
, FMODE_READ
)) {
350 nfs4_inode_return_delegation(inode
);
351 exception
->retry
= 1;
356 ret
= nfs4_schedule_stateid_recovery(server
, state
);
359 goto wait_on_recovery
;
360 case -NFS4ERR_DELEG_REVOKED
:
361 case -NFS4ERR_ADMIN_REVOKED
:
362 case -NFS4ERR_BAD_STATEID
:
363 if (inode
!= NULL
&& nfs4_have_delegation(inode
, FMODE_READ
)) {
364 nfs_remove_bad_delegation(inode
);
365 exception
->retry
= 1;
370 ret
= nfs4_schedule_stateid_recovery(server
, state
);
373 goto wait_on_recovery
;
374 case -NFS4ERR_EXPIRED
:
376 ret
= nfs4_schedule_stateid_recovery(server
, state
);
380 case -NFS4ERR_STALE_STATEID
:
381 case -NFS4ERR_STALE_CLIENTID
:
382 nfs4_schedule_lease_recovery(clp
);
383 goto wait_on_recovery
;
385 ret
= nfs4_schedule_migration_recovery(server
);
388 goto wait_on_recovery
;
389 case -NFS4ERR_LEASE_MOVED
:
390 nfs4_schedule_lease_moved_recovery(clp
);
391 goto wait_on_recovery
;
392 #if defined(CONFIG_NFS_V4_1)
393 case -NFS4ERR_BADSESSION
:
394 case -NFS4ERR_BADSLOT
:
395 case -NFS4ERR_BAD_HIGH_SLOT
:
396 case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION
:
397 case -NFS4ERR_DEADSESSION
:
398 case -NFS4ERR_SEQ_FALSE_RETRY
:
399 case -NFS4ERR_SEQ_MISORDERED
:
400 dprintk("%s ERROR: %d Reset session\n", __func__
,
402 nfs4_schedule_session_recovery(clp
->cl_session
, errorcode
);
403 goto wait_on_recovery
;
404 #endif /* defined(CONFIG_NFS_V4_1) */
405 case -NFS4ERR_FILE_OPEN
:
406 if (exception
->timeout
> HZ
) {
407 /* We have retried a decent amount, time to
415 ret
= nfs4_delay(server
->client
, &exception
->timeout
);
418 case -NFS4ERR_RETRY_UNCACHED_REP
:
419 case -NFS4ERR_OLD_STATEID
:
420 exception
->retry
= 1;
422 case -NFS4ERR_BADOWNER
:
423 /* The following works around a Linux server bug! */
424 case -NFS4ERR_BADNAME
:
425 if (server
->caps
& NFS_CAP_UIDGID_NOMAP
) {
426 server
->caps
&= ~NFS_CAP_UIDGID_NOMAP
;
427 exception
->retry
= 1;
428 printk(KERN_WARNING
"NFS: v4 server %s "
429 "does not accept raw "
431 "Reenabling the idmapper.\n",
432 server
->nfs_client
->cl_hostname
);
435 /* We failed to handle the error */
436 return nfs4_map_errors(ret
);
438 ret
= nfs4_wait_clnt_recover(clp
);
439 if (test_bit(NFS_MIG_FAILED
, &server
->mig_status
))
442 exception
->retry
= 1;
447 * Return 'true' if 'clp' is using an rpc_client that is integrity protected
448 * or 'false' otherwise.
450 static bool _nfs4_is_integrity_protected(struct nfs_client
*clp
)
452 rpc_authflavor_t flavor
= clp
->cl_rpcclient
->cl_auth
->au_flavor
;
454 if (flavor
== RPC_AUTH_GSS_KRB5I
||
455 flavor
== RPC_AUTH_GSS_KRB5P
)
461 static void do_renew_lease(struct nfs_client
*clp
, unsigned long timestamp
)
463 spin_lock(&clp
->cl_lock
);
464 if (time_before(clp
->cl_last_renewal
,timestamp
))
465 clp
->cl_last_renewal
= timestamp
;
466 spin_unlock(&clp
->cl_lock
);
469 static void renew_lease(const struct nfs_server
*server
, unsigned long timestamp
)
471 do_renew_lease(server
->nfs_client
, timestamp
);
474 struct nfs4_call_sync_data
{
475 const struct nfs_server
*seq_server
;
476 struct nfs4_sequence_args
*seq_args
;
477 struct nfs4_sequence_res
*seq_res
;
480 static void nfs4_init_sequence(struct nfs4_sequence_args
*args
,
481 struct nfs4_sequence_res
*res
, int cache_reply
)
483 args
->sa_slot
= NULL
;
484 args
->sa_cache_this
= cache_reply
;
485 args
->sa_privileged
= 0;
490 static void nfs4_set_sequence_privileged(struct nfs4_sequence_args
*args
)
492 args
->sa_privileged
= 1;
495 static int nfs40_setup_sequence(const struct nfs_server
*server
,
496 struct nfs4_sequence_args
*args
,
497 struct nfs4_sequence_res
*res
,
498 struct rpc_task
*task
)
500 struct nfs4_slot_table
*tbl
= server
->nfs_client
->cl_slot_tbl
;
501 struct nfs4_slot
*slot
;
503 /* slot already allocated? */
504 if (res
->sr_slot
!= NULL
)
507 spin_lock(&tbl
->slot_tbl_lock
);
508 if (nfs4_slot_tbl_draining(tbl
) && !args
->sa_privileged
)
511 slot
= nfs4_alloc_slot(tbl
);
513 if (slot
== ERR_PTR(-ENOMEM
))
514 task
->tk_timeout
= HZ
>> 2;
517 spin_unlock(&tbl
->slot_tbl_lock
);
519 args
->sa_slot
= slot
;
523 rpc_call_start(task
);
527 if (args
->sa_privileged
)
528 rpc_sleep_on_priority(&tbl
->slot_tbl_waitq
, task
,
529 NULL
, RPC_PRIORITY_PRIVILEGED
);
531 rpc_sleep_on(&tbl
->slot_tbl_waitq
, task
, NULL
);
532 spin_unlock(&tbl
->slot_tbl_lock
);
536 static int nfs40_sequence_done(struct rpc_task
*task
,
537 struct nfs4_sequence_res
*res
)
539 struct nfs4_slot
*slot
= res
->sr_slot
;
540 struct nfs4_slot_table
*tbl
;
546 spin_lock(&tbl
->slot_tbl_lock
);
547 if (!nfs41_wake_and_assign_slot(tbl
, slot
))
548 nfs4_free_slot(tbl
, slot
);
549 spin_unlock(&tbl
->slot_tbl_lock
);
556 #if defined(CONFIG_NFS_V4_1)
558 static void nfs41_sequence_free_slot(struct nfs4_sequence_res
*res
)
560 struct nfs4_session
*session
;
561 struct nfs4_slot_table
*tbl
;
562 struct nfs4_slot
*slot
= res
->sr_slot
;
563 bool send_new_highest_used_slotid
= false;
566 session
= tbl
->session
;
568 spin_lock(&tbl
->slot_tbl_lock
);
569 /* Be nice to the server: try to ensure that the last transmitted
570 * value for highest_user_slotid <= target_highest_slotid
572 if (tbl
->highest_used_slotid
> tbl
->target_highest_slotid
)
573 send_new_highest_used_slotid
= true;
575 if (nfs41_wake_and_assign_slot(tbl
, slot
)) {
576 send_new_highest_used_slotid
= false;
579 nfs4_free_slot(tbl
, slot
);
581 if (tbl
->highest_used_slotid
!= NFS4_NO_SLOT
)
582 send_new_highest_used_slotid
= false;
584 spin_unlock(&tbl
->slot_tbl_lock
);
586 if (send_new_highest_used_slotid
)
587 nfs41_server_notify_highest_slotid_update(session
->clp
);
590 int nfs41_sequence_done(struct rpc_task
*task
, struct nfs4_sequence_res
*res
)
592 struct nfs4_session
*session
;
593 struct nfs4_slot
*slot
= res
->sr_slot
;
594 struct nfs_client
*clp
;
595 bool interrupted
= false;
600 /* don't increment the sequence number if the task wasn't sent */
601 if (!RPC_WAS_SENT(task
))
604 session
= slot
->table
->session
;
606 if (slot
->interrupted
) {
607 slot
->interrupted
= 0;
611 trace_nfs4_sequence_done(session
, res
);
612 /* Check the SEQUENCE operation status */
613 switch (res
->sr_status
) {
615 /* Update the slot's sequence and clientid lease timer */
618 do_renew_lease(clp
, res
->sr_timestamp
);
619 /* Check sequence flags */
620 if (res
->sr_status_flags
!= 0)
621 nfs4_schedule_lease_recovery(clp
);
622 nfs41_update_target_slotid(slot
->table
, slot
, res
);
626 * sr_status remains 1 if an RPC level error occurred.
627 * The server may or may not have processed the sequence
629 * Mark the slot as having hosted an interrupted RPC call.
631 slot
->interrupted
= 1;
634 /* The server detected a resend of the RPC call and
635 * returned NFS4ERR_DELAY as per Section 2.10.6.2
638 dprintk("%s: slot=%u seq=%u: Operation in progress\n",
643 case -NFS4ERR_BADSLOT
:
645 * The slot id we used was probably retired. Try again
646 * using a different slot id.
649 case -NFS4ERR_SEQ_MISORDERED
:
651 * Was the last operation on this sequence interrupted?
652 * If so, retry after bumping the sequence number.
659 * Could this slot have been previously retired?
660 * If so, then the server may be expecting seq_nr = 1!
662 if (slot
->seq_nr
!= 1) {
667 case -NFS4ERR_SEQ_FALSE_RETRY
:
671 /* Just update the slot sequence no. */
675 /* The session may be reset by one of the error handlers. */
676 dprintk("%s: Error %d free the slot \n", __func__
, res
->sr_status
);
677 nfs41_sequence_free_slot(res
);
681 if (rpc_restart_call_prepare(task
)) {
687 if (!rpc_restart_call(task
))
689 rpc_delay(task
, NFS4_POLL_RETRY_MAX
);
692 EXPORT_SYMBOL_GPL(nfs41_sequence_done
);
694 static int nfs4_sequence_done(struct rpc_task
*task
,
695 struct nfs4_sequence_res
*res
)
697 if (res
->sr_slot
== NULL
)
699 if (!res
->sr_slot
->table
->session
)
700 return nfs40_sequence_done(task
, res
);
701 return nfs41_sequence_done(task
, res
);
704 int nfs41_setup_sequence(struct nfs4_session
*session
,
705 struct nfs4_sequence_args
*args
,
706 struct nfs4_sequence_res
*res
,
707 struct rpc_task
*task
)
709 struct nfs4_slot
*slot
;
710 struct nfs4_slot_table
*tbl
;
712 dprintk("--> %s\n", __func__
);
713 /* slot already allocated? */
714 if (res
->sr_slot
!= NULL
)
717 tbl
= &session
->fc_slot_table
;
719 task
->tk_timeout
= 0;
721 spin_lock(&tbl
->slot_tbl_lock
);
722 if (test_bit(NFS4_SLOT_TBL_DRAINING
, &tbl
->slot_tbl_state
) &&
723 !args
->sa_privileged
) {
724 /* The state manager will wait until the slot table is empty */
725 dprintk("%s session is draining\n", __func__
);
729 slot
= nfs4_alloc_slot(tbl
);
731 /* If out of memory, try again in 1/4 second */
732 if (slot
== ERR_PTR(-ENOMEM
))
733 task
->tk_timeout
= HZ
>> 2;
734 dprintk("<-- %s: no free slots\n", __func__
);
737 spin_unlock(&tbl
->slot_tbl_lock
);
739 args
->sa_slot
= slot
;
741 dprintk("<-- %s slotid=%u seqid=%u\n", __func__
,
742 slot
->slot_nr
, slot
->seq_nr
);
745 res
->sr_timestamp
= jiffies
;
746 res
->sr_status_flags
= 0;
748 * sr_status is only set in decode_sequence, and so will remain
749 * set to 1 if an rpc level failure occurs.
752 trace_nfs4_setup_sequence(session
, args
);
754 rpc_call_start(task
);
757 /* Privileged tasks are queued with top priority */
758 if (args
->sa_privileged
)
759 rpc_sleep_on_priority(&tbl
->slot_tbl_waitq
, task
,
760 NULL
, RPC_PRIORITY_PRIVILEGED
);
762 rpc_sleep_on(&tbl
->slot_tbl_waitq
, task
, NULL
);
763 spin_unlock(&tbl
->slot_tbl_lock
);
766 EXPORT_SYMBOL_GPL(nfs41_setup_sequence
);
768 static int nfs4_setup_sequence(const struct nfs_server
*server
,
769 struct nfs4_sequence_args
*args
,
770 struct nfs4_sequence_res
*res
,
771 struct rpc_task
*task
)
773 struct nfs4_session
*session
= nfs4_get_session(server
);
777 return nfs40_setup_sequence(server
, args
, res
, task
);
779 dprintk("--> %s clp %p session %p sr_slot %u\n",
780 __func__
, session
->clp
, session
, res
->sr_slot
?
781 res
->sr_slot
->slot_nr
: NFS4_NO_SLOT
);
783 ret
= nfs41_setup_sequence(session
, args
, res
, task
);
785 dprintk("<-- %s status=%d\n", __func__
, ret
);
789 static void nfs41_call_sync_prepare(struct rpc_task
*task
, void *calldata
)
791 struct nfs4_call_sync_data
*data
= calldata
;
792 struct nfs4_session
*session
= nfs4_get_session(data
->seq_server
);
794 dprintk("--> %s data->seq_server %p\n", __func__
, data
->seq_server
);
796 nfs41_setup_sequence(session
, data
->seq_args
, data
->seq_res
, task
);
799 static void nfs41_call_sync_done(struct rpc_task
*task
, void *calldata
)
801 struct nfs4_call_sync_data
*data
= calldata
;
803 nfs41_sequence_done(task
, data
->seq_res
);
806 static const struct rpc_call_ops nfs41_call_sync_ops
= {
807 .rpc_call_prepare
= nfs41_call_sync_prepare
,
808 .rpc_call_done
= nfs41_call_sync_done
,
811 #else /* !CONFIG_NFS_V4_1 */
813 static int nfs4_setup_sequence(const struct nfs_server
*server
,
814 struct nfs4_sequence_args
*args
,
815 struct nfs4_sequence_res
*res
,
816 struct rpc_task
*task
)
818 return nfs40_setup_sequence(server
, args
, res
, task
);
821 static int nfs4_sequence_done(struct rpc_task
*task
,
822 struct nfs4_sequence_res
*res
)
824 return nfs40_sequence_done(task
, res
);
827 #endif /* !CONFIG_NFS_V4_1 */
829 static void nfs40_call_sync_prepare(struct rpc_task
*task
, void *calldata
)
831 struct nfs4_call_sync_data
*data
= calldata
;
832 nfs4_setup_sequence(data
->seq_server
,
833 data
->seq_args
, data
->seq_res
, task
);
836 static void nfs40_call_sync_done(struct rpc_task
*task
, void *calldata
)
838 struct nfs4_call_sync_data
*data
= calldata
;
839 nfs4_sequence_done(task
, data
->seq_res
);
842 static const struct rpc_call_ops nfs40_call_sync_ops
= {
843 .rpc_call_prepare
= nfs40_call_sync_prepare
,
844 .rpc_call_done
= nfs40_call_sync_done
,
847 static int nfs4_call_sync_sequence(struct rpc_clnt
*clnt
,
848 struct nfs_server
*server
,
849 struct rpc_message
*msg
,
850 struct nfs4_sequence_args
*args
,
851 struct nfs4_sequence_res
*res
)
854 struct rpc_task
*task
;
855 struct nfs_client
*clp
= server
->nfs_client
;
856 struct nfs4_call_sync_data data
= {
857 .seq_server
= server
,
861 struct rpc_task_setup task_setup
= {
864 .callback_ops
= clp
->cl_mvops
->call_sync_ops
,
865 .callback_data
= &data
868 task
= rpc_run_task(&task_setup
);
872 ret
= task
->tk_status
;
879 int nfs4_call_sync(struct rpc_clnt
*clnt
,
880 struct nfs_server
*server
,
881 struct rpc_message
*msg
,
882 struct nfs4_sequence_args
*args
,
883 struct nfs4_sequence_res
*res
,
886 nfs4_init_sequence(args
, res
, cache_reply
);
887 return nfs4_call_sync_sequence(clnt
, server
, msg
, args
, res
);
890 static void update_changeattr(struct inode
*dir
, struct nfs4_change_info
*cinfo
)
892 struct nfs_inode
*nfsi
= NFS_I(dir
);
894 spin_lock(&dir
->i_lock
);
895 nfsi
->cache_validity
|= NFS_INO_INVALID_ATTR
|NFS_INO_INVALID_DATA
;
896 if (!cinfo
->atomic
|| cinfo
->before
!= dir
->i_version
)
897 nfs_force_lookup_revalidate(dir
);
898 dir
->i_version
= cinfo
->after
;
899 nfs_fscache_invalidate(dir
);
900 spin_unlock(&dir
->i_lock
);
903 struct nfs4_opendata
{
905 struct nfs_openargs o_arg
;
906 struct nfs_openres o_res
;
907 struct nfs_open_confirmargs c_arg
;
908 struct nfs_open_confirmres c_res
;
909 struct nfs4_string owner_name
;
910 struct nfs4_string group_name
;
911 struct nfs_fattr f_attr
;
912 struct nfs4_label
*f_label
;
914 struct dentry
*dentry
;
915 struct nfs4_state_owner
*owner
;
916 struct nfs4_state
*state
;
918 unsigned long timestamp
;
919 unsigned int rpc_done
: 1;
920 unsigned int file_created
: 1;
921 unsigned int is_recover
: 1;
926 static bool nfs4_clear_cap_atomic_open_v1(struct nfs_server
*server
,
927 int err
, struct nfs4_exception
*exception
)
931 if (!(server
->caps
& NFS_CAP_ATOMIC_OPEN_V1
))
933 server
->caps
&= ~NFS_CAP_ATOMIC_OPEN_V1
;
934 exception
->retry
= 1;
938 static enum open_claim_type4
939 nfs4_map_atomic_open_claim(struct nfs_server
*server
,
940 enum open_claim_type4 claim
)
942 if (server
->caps
& NFS_CAP_ATOMIC_OPEN_V1
)
947 case NFS4_OPEN_CLAIM_FH
:
948 return NFS4_OPEN_CLAIM_NULL
;
949 case NFS4_OPEN_CLAIM_DELEG_CUR_FH
:
950 return NFS4_OPEN_CLAIM_DELEGATE_CUR
;
951 case NFS4_OPEN_CLAIM_DELEG_PREV_FH
:
952 return NFS4_OPEN_CLAIM_DELEGATE_PREV
;
956 static void nfs4_init_opendata_res(struct nfs4_opendata
*p
)
958 p
->o_res
.f_attr
= &p
->f_attr
;
959 p
->o_res
.f_label
= p
->f_label
;
960 p
->o_res
.seqid
= p
->o_arg
.seqid
;
961 p
->c_res
.seqid
= p
->c_arg
.seqid
;
962 p
->o_res
.server
= p
->o_arg
.server
;
963 p
->o_res
.access_request
= p
->o_arg
.access
;
964 nfs_fattr_init(&p
->f_attr
);
965 nfs_fattr_init_names(&p
->f_attr
, &p
->owner_name
, &p
->group_name
);
968 static struct nfs4_opendata
*nfs4_opendata_alloc(struct dentry
*dentry
,
969 struct nfs4_state_owner
*sp
, fmode_t fmode
, int flags
,
970 const struct iattr
*attrs
,
971 struct nfs4_label
*label
,
972 enum open_claim_type4 claim
,
975 struct dentry
*parent
= dget_parent(dentry
);
976 struct inode
*dir
= parent
->d_inode
;
977 struct nfs_server
*server
= NFS_SERVER(dir
);
978 struct nfs4_opendata
*p
;
980 p
= kzalloc(sizeof(*p
), gfp_mask
);
984 p
->f_label
= nfs4_label_alloc(server
, gfp_mask
);
985 if (IS_ERR(p
->f_label
))
988 p
->o_arg
.seqid
= nfs_alloc_seqid(&sp
->so_seqid
, gfp_mask
);
989 if (p
->o_arg
.seqid
== NULL
)
991 nfs_sb_active(dentry
->d_sb
);
992 p
->dentry
= dget(dentry
);
995 atomic_inc(&sp
->so_count
);
996 p
->o_arg
.open_flags
= flags
;
997 p
->o_arg
.fmode
= fmode
& (FMODE_READ
|FMODE_WRITE
);
998 /* don't put an ACCESS op in OPEN compound if O_EXCL, because ACCESS
999 * will return permission denied for all bits until close */
1000 if (!(flags
& O_EXCL
)) {
1001 /* ask server to check for all possible rights as results
1003 p
->o_arg
.access
= NFS4_ACCESS_READ
| NFS4_ACCESS_MODIFY
|
1004 NFS4_ACCESS_EXTEND
| NFS4_ACCESS_EXECUTE
;
1006 p
->o_arg
.clientid
= server
->nfs_client
->cl_clientid
;
1007 p
->o_arg
.id
.create_time
= ktime_to_ns(sp
->so_seqid
.create_time
);
1008 p
->o_arg
.id
.uniquifier
= sp
->so_seqid
.owner_id
;
1009 p
->o_arg
.name
= &dentry
->d_name
;
1010 p
->o_arg
.server
= server
;
1011 p
->o_arg
.bitmask
= nfs4_bitmask(server
, label
);
1012 p
->o_arg
.open_bitmap
= &nfs4_fattr_bitmap
[0];
1013 p
->o_arg
.label
= label
;
1014 p
->o_arg
.claim
= nfs4_map_atomic_open_claim(server
, claim
);
1015 switch (p
->o_arg
.claim
) {
1016 case NFS4_OPEN_CLAIM_NULL
:
1017 case NFS4_OPEN_CLAIM_DELEGATE_CUR
:
1018 case NFS4_OPEN_CLAIM_DELEGATE_PREV
:
1019 p
->o_arg
.fh
= NFS_FH(dir
);
1021 case NFS4_OPEN_CLAIM_PREVIOUS
:
1022 case NFS4_OPEN_CLAIM_FH
:
1023 case NFS4_OPEN_CLAIM_DELEG_CUR_FH
:
1024 case NFS4_OPEN_CLAIM_DELEG_PREV_FH
:
1025 p
->o_arg
.fh
= NFS_FH(dentry
->d_inode
);
1027 if (attrs
!= NULL
&& attrs
->ia_valid
!= 0) {
1030 p
->o_arg
.u
.attrs
= &p
->attrs
;
1031 memcpy(&p
->attrs
, attrs
, sizeof(p
->attrs
));
1034 verf
[1] = current
->pid
;
1035 memcpy(p
->o_arg
.u
.verifier
.data
, verf
,
1036 sizeof(p
->o_arg
.u
.verifier
.data
));
1038 p
->c_arg
.fh
= &p
->o_res
.fh
;
1039 p
->c_arg
.stateid
= &p
->o_res
.stateid
;
1040 p
->c_arg
.seqid
= p
->o_arg
.seqid
;
1041 nfs4_init_opendata_res(p
);
1042 kref_init(&p
->kref
);
1046 nfs4_label_free(p
->f_label
);
1054 static void nfs4_opendata_free(struct kref
*kref
)
1056 struct nfs4_opendata
*p
= container_of(kref
,
1057 struct nfs4_opendata
, kref
);
1058 struct super_block
*sb
= p
->dentry
->d_sb
;
1060 nfs_free_seqid(p
->o_arg
.seqid
);
1061 if (p
->state
!= NULL
)
1062 nfs4_put_open_state(p
->state
);
1063 nfs4_put_state_owner(p
->owner
);
1065 nfs4_label_free(p
->f_label
);
1069 nfs_sb_deactive(sb
);
1070 nfs_fattr_free_names(&p
->f_attr
);
1074 static void nfs4_opendata_put(struct nfs4_opendata
*p
)
1077 kref_put(&p
->kref
, nfs4_opendata_free
);
1080 static int nfs4_wait_for_completion_rpc_task(struct rpc_task
*task
)
1084 ret
= rpc_wait_for_completion_task(task
);
1088 static int can_open_cached(struct nfs4_state
*state
, fmode_t mode
, int open_mode
)
1092 if (open_mode
& (O_EXCL
|O_TRUNC
))
1094 switch (mode
& (FMODE_READ
|FMODE_WRITE
)) {
1096 ret
|= test_bit(NFS_O_RDONLY_STATE
, &state
->flags
) != 0
1097 && state
->n_rdonly
!= 0;
1100 ret
|= test_bit(NFS_O_WRONLY_STATE
, &state
->flags
) != 0
1101 && state
->n_wronly
!= 0;
1103 case FMODE_READ
|FMODE_WRITE
:
1104 ret
|= test_bit(NFS_O_RDWR_STATE
, &state
->flags
) != 0
1105 && state
->n_rdwr
!= 0;
1111 static int can_open_delegated(struct nfs_delegation
*delegation
, fmode_t fmode
)
1113 if (delegation
== NULL
)
1115 if ((delegation
->type
& fmode
) != fmode
)
1117 if (test_bit(NFS_DELEGATION_NEED_RECLAIM
, &delegation
->flags
))
1119 if (test_bit(NFS_DELEGATION_RETURNING
, &delegation
->flags
))
1121 nfs_mark_delegation_referenced(delegation
);
1125 static void update_open_stateflags(struct nfs4_state
*state
, fmode_t fmode
)
1134 case FMODE_READ
|FMODE_WRITE
:
1137 nfs4_state_set_mode_locked(state
, state
->state
| fmode
);
1140 static void nfs_set_open_stateid_locked(struct nfs4_state
*state
, nfs4_stateid
*stateid
, fmode_t fmode
)
1142 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) == 0)
1143 nfs4_stateid_copy(&state
->stateid
, stateid
);
1144 nfs4_stateid_copy(&state
->open_stateid
, stateid
);
1145 set_bit(NFS_OPEN_STATE
, &state
->flags
);
1148 set_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
1151 set_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
1153 case FMODE_READ
|FMODE_WRITE
:
1154 set_bit(NFS_O_RDWR_STATE
, &state
->flags
);
1158 static void nfs_set_open_stateid(struct nfs4_state
*state
, nfs4_stateid
*stateid
, fmode_t fmode
)
1160 write_seqlock(&state
->seqlock
);
1161 nfs_set_open_stateid_locked(state
, stateid
, fmode
);
1162 write_sequnlock(&state
->seqlock
);
1165 static void __update_open_stateid(struct nfs4_state
*state
, nfs4_stateid
*open_stateid
, const nfs4_stateid
*deleg_stateid
, fmode_t fmode
)
1168 * Protect the call to nfs4_state_set_mode_locked and
1169 * serialise the stateid update
1171 write_seqlock(&state
->seqlock
);
1172 if (deleg_stateid
!= NULL
) {
1173 nfs4_stateid_copy(&state
->stateid
, deleg_stateid
);
1174 set_bit(NFS_DELEGATED_STATE
, &state
->flags
);
1176 if (open_stateid
!= NULL
)
1177 nfs_set_open_stateid_locked(state
, open_stateid
, fmode
);
1178 write_sequnlock(&state
->seqlock
);
1179 spin_lock(&state
->owner
->so_lock
);
1180 update_open_stateflags(state
, fmode
);
1181 spin_unlock(&state
->owner
->so_lock
);
1184 static int update_open_stateid(struct nfs4_state
*state
, nfs4_stateid
*open_stateid
, nfs4_stateid
*delegation
, fmode_t fmode
)
1186 struct nfs_inode
*nfsi
= NFS_I(state
->inode
);
1187 struct nfs_delegation
*deleg_cur
;
1190 fmode
&= (FMODE_READ
|FMODE_WRITE
);
1193 deleg_cur
= rcu_dereference(nfsi
->delegation
);
1194 if (deleg_cur
== NULL
)
1197 spin_lock(&deleg_cur
->lock
);
1198 if (rcu_dereference(nfsi
->delegation
) != deleg_cur
||
1199 test_bit(NFS_DELEGATION_RETURNING
, &deleg_cur
->flags
) ||
1200 (deleg_cur
->type
& fmode
) != fmode
)
1201 goto no_delegation_unlock
;
1203 if (delegation
== NULL
)
1204 delegation
= &deleg_cur
->stateid
;
1205 else if (!nfs4_stateid_match(&deleg_cur
->stateid
, delegation
))
1206 goto no_delegation_unlock
;
1208 nfs_mark_delegation_referenced(deleg_cur
);
1209 __update_open_stateid(state
, open_stateid
, &deleg_cur
->stateid
, fmode
);
1211 no_delegation_unlock
:
1212 spin_unlock(&deleg_cur
->lock
);
1216 if (!ret
&& open_stateid
!= NULL
) {
1217 __update_open_stateid(state
, open_stateid
, NULL
, fmode
);
1225 static void nfs4_return_incompatible_delegation(struct inode
*inode
, fmode_t fmode
)
1227 struct nfs_delegation
*delegation
;
1230 delegation
= rcu_dereference(NFS_I(inode
)->delegation
);
1231 if (delegation
== NULL
|| (delegation
->type
& fmode
) == fmode
) {
1236 nfs4_inode_return_delegation(inode
);
1239 static struct nfs4_state
*nfs4_try_open_cached(struct nfs4_opendata
*opendata
)
1241 struct nfs4_state
*state
= opendata
->state
;
1242 struct nfs_inode
*nfsi
= NFS_I(state
->inode
);
1243 struct nfs_delegation
*delegation
;
1244 int open_mode
= opendata
->o_arg
.open_flags
;
1245 fmode_t fmode
= opendata
->o_arg
.fmode
;
1246 nfs4_stateid stateid
;
1250 if (can_open_cached(state
, fmode
, open_mode
)) {
1251 spin_lock(&state
->owner
->so_lock
);
1252 if (can_open_cached(state
, fmode
, open_mode
)) {
1253 update_open_stateflags(state
, fmode
);
1254 spin_unlock(&state
->owner
->so_lock
);
1255 goto out_return_state
;
1257 spin_unlock(&state
->owner
->so_lock
);
1260 delegation
= rcu_dereference(nfsi
->delegation
);
1261 if (!can_open_delegated(delegation
, fmode
)) {
1265 /* Save the delegation */
1266 nfs4_stateid_copy(&stateid
, &delegation
->stateid
);
1268 nfs_release_seqid(opendata
->o_arg
.seqid
);
1269 if (!opendata
->is_recover
) {
1270 ret
= nfs_may_open(state
->inode
, state
->owner
->so_cred
, open_mode
);
1276 /* Try to update the stateid using the delegation */
1277 if (update_open_stateid(state
, NULL
, &stateid
, fmode
))
1278 goto out_return_state
;
1281 return ERR_PTR(ret
);
1283 atomic_inc(&state
->count
);
1288 nfs4_opendata_check_deleg(struct nfs4_opendata
*data
, struct nfs4_state
*state
)
1290 struct nfs_client
*clp
= NFS_SERVER(state
->inode
)->nfs_client
;
1291 struct nfs_delegation
*delegation
;
1292 int delegation_flags
= 0;
1295 delegation
= rcu_dereference(NFS_I(state
->inode
)->delegation
);
1297 delegation_flags
= delegation
->flags
;
1299 if (data
->o_arg
.claim
== NFS4_OPEN_CLAIM_DELEGATE_CUR
) {
1300 pr_err_ratelimited("NFS: Broken NFSv4 server %s is "
1301 "returning a delegation for "
1302 "OPEN(CLAIM_DELEGATE_CUR)\n",
1304 } else if ((delegation_flags
& 1UL<<NFS_DELEGATION_NEED_RECLAIM
) == 0)
1305 nfs_inode_set_delegation(state
->inode
,
1306 data
->owner
->so_cred
,
1309 nfs_inode_reclaim_delegation(state
->inode
,
1310 data
->owner
->so_cred
,
1315 * Check the inode attributes against the CLAIM_PREVIOUS returned attributes
1316 * and update the nfs4_state.
1318 static struct nfs4_state
*
1319 _nfs4_opendata_reclaim_to_nfs4_state(struct nfs4_opendata
*data
)
1321 struct inode
*inode
= data
->state
->inode
;
1322 struct nfs4_state
*state
= data
->state
;
1325 if (!data
->rpc_done
) {
1326 if (data
->rpc_status
) {
1327 ret
= data
->rpc_status
;
1330 /* cached opens have already been processed */
1334 ret
= nfs_refresh_inode(inode
, &data
->f_attr
);
1338 if (data
->o_res
.delegation_type
!= 0)
1339 nfs4_opendata_check_deleg(data
, state
);
1341 update_open_stateid(state
, &data
->o_res
.stateid
, NULL
,
1343 atomic_inc(&state
->count
);
1347 return ERR_PTR(ret
);
1351 static struct nfs4_state
*
1352 _nfs4_opendata_to_nfs4_state(struct nfs4_opendata
*data
)
1354 struct inode
*inode
;
1355 struct nfs4_state
*state
= NULL
;
1358 if (!data
->rpc_done
) {
1359 state
= nfs4_try_open_cached(data
);
1364 if (!(data
->f_attr
.valid
& NFS_ATTR_FATTR
))
1366 inode
= nfs_fhget(data
->dir
->d_sb
, &data
->o_res
.fh
, &data
->f_attr
, data
->f_label
);
1367 ret
= PTR_ERR(inode
);
1371 state
= nfs4_get_open_state(inode
, data
->owner
);
1374 if (data
->o_res
.delegation_type
!= 0)
1375 nfs4_opendata_check_deleg(data
, state
);
1376 update_open_stateid(state
, &data
->o_res
.stateid
, NULL
,
1380 nfs_release_seqid(data
->o_arg
.seqid
);
1385 return ERR_PTR(ret
);
1388 static struct nfs4_state
*
1389 nfs4_opendata_to_nfs4_state(struct nfs4_opendata
*data
)
1391 if (data
->o_arg
.claim
== NFS4_OPEN_CLAIM_PREVIOUS
)
1392 return _nfs4_opendata_reclaim_to_nfs4_state(data
);
1393 return _nfs4_opendata_to_nfs4_state(data
);
1396 static struct nfs_open_context
*nfs4_state_find_open_context(struct nfs4_state
*state
)
1398 struct nfs_inode
*nfsi
= NFS_I(state
->inode
);
1399 struct nfs_open_context
*ctx
;
1401 spin_lock(&state
->inode
->i_lock
);
1402 list_for_each_entry(ctx
, &nfsi
->open_files
, list
) {
1403 if (ctx
->state
!= state
)
1405 get_nfs_open_context(ctx
);
1406 spin_unlock(&state
->inode
->i_lock
);
1409 spin_unlock(&state
->inode
->i_lock
);
1410 return ERR_PTR(-ENOENT
);
1413 static struct nfs4_opendata
*nfs4_open_recoverdata_alloc(struct nfs_open_context
*ctx
,
1414 struct nfs4_state
*state
, enum open_claim_type4 claim
)
1416 struct nfs4_opendata
*opendata
;
1418 opendata
= nfs4_opendata_alloc(ctx
->dentry
, state
->owner
, 0, 0,
1419 NULL
, NULL
, claim
, GFP_NOFS
);
1420 if (opendata
== NULL
)
1421 return ERR_PTR(-ENOMEM
);
1422 opendata
->state
= state
;
1423 atomic_inc(&state
->count
);
1427 static int nfs4_open_recover_helper(struct nfs4_opendata
*opendata
, fmode_t fmode
, struct nfs4_state
**res
)
1429 struct nfs4_state
*newstate
;
1432 opendata
->o_arg
.open_flags
= 0;
1433 opendata
->o_arg
.fmode
= fmode
;
1434 memset(&opendata
->o_res
, 0, sizeof(opendata
->o_res
));
1435 memset(&opendata
->c_res
, 0, sizeof(opendata
->c_res
));
1436 nfs4_init_opendata_res(opendata
);
1437 ret
= _nfs4_recover_proc_open(opendata
);
1440 newstate
= nfs4_opendata_to_nfs4_state(opendata
);
1441 if (IS_ERR(newstate
))
1442 return PTR_ERR(newstate
);
1443 nfs4_close_state(newstate
, fmode
);
1448 static int nfs4_open_recover(struct nfs4_opendata
*opendata
, struct nfs4_state
*state
)
1450 struct nfs4_state
*newstate
;
1453 /* memory barrier prior to reading state->n_* */
1454 clear_bit(NFS_DELEGATED_STATE
, &state
->flags
);
1455 clear_bit(NFS_OPEN_STATE
, &state
->flags
);
1457 if (state
->n_rdwr
!= 0) {
1458 clear_bit(NFS_O_RDWR_STATE
, &state
->flags
);
1459 ret
= nfs4_open_recover_helper(opendata
, FMODE_READ
|FMODE_WRITE
, &newstate
);
1462 if (newstate
!= state
)
1465 if (state
->n_wronly
!= 0) {
1466 clear_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
1467 ret
= nfs4_open_recover_helper(opendata
, FMODE_WRITE
, &newstate
);
1470 if (newstate
!= state
)
1473 if (state
->n_rdonly
!= 0) {
1474 clear_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
1475 ret
= nfs4_open_recover_helper(opendata
, FMODE_READ
, &newstate
);
1478 if (newstate
!= state
)
1482 * We may have performed cached opens for all three recoveries.
1483 * Check if we need to update the current stateid.
1485 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) == 0 &&
1486 !nfs4_stateid_match(&state
->stateid
, &state
->open_stateid
)) {
1487 write_seqlock(&state
->seqlock
);
1488 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) == 0)
1489 nfs4_stateid_copy(&state
->stateid
, &state
->open_stateid
);
1490 write_sequnlock(&state
->seqlock
);
1497 * reclaim state on the server after a reboot.
1499 static int _nfs4_do_open_reclaim(struct nfs_open_context
*ctx
, struct nfs4_state
*state
)
1501 struct nfs_delegation
*delegation
;
1502 struct nfs4_opendata
*opendata
;
1503 fmode_t delegation_type
= 0;
1506 opendata
= nfs4_open_recoverdata_alloc(ctx
, state
,
1507 NFS4_OPEN_CLAIM_PREVIOUS
);
1508 if (IS_ERR(opendata
))
1509 return PTR_ERR(opendata
);
1511 delegation
= rcu_dereference(NFS_I(state
->inode
)->delegation
);
1512 if (delegation
!= NULL
&& test_bit(NFS_DELEGATION_NEED_RECLAIM
, &delegation
->flags
) != 0)
1513 delegation_type
= delegation
->type
;
1515 opendata
->o_arg
.u
.delegation_type
= delegation_type
;
1516 status
= nfs4_open_recover(opendata
, state
);
1517 nfs4_opendata_put(opendata
);
1521 static int nfs4_do_open_reclaim(struct nfs_open_context
*ctx
, struct nfs4_state
*state
)
1523 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
1524 struct nfs4_exception exception
= { };
1527 err
= _nfs4_do_open_reclaim(ctx
, state
);
1528 trace_nfs4_open_reclaim(ctx
, 0, err
);
1529 if (nfs4_clear_cap_atomic_open_v1(server
, err
, &exception
))
1531 if (err
!= -NFS4ERR_DELAY
)
1533 nfs4_handle_exception(server
, err
, &exception
);
1534 } while (exception
.retry
);
1538 static int nfs4_open_reclaim(struct nfs4_state_owner
*sp
, struct nfs4_state
*state
)
1540 struct nfs_open_context
*ctx
;
1543 ctx
= nfs4_state_find_open_context(state
);
1546 ret
= nfs4_do_open_reclaim(ctx
, state
);
1547 put_nfs_open_context(ctx
);
1551 static int nfs4_handle_delegation_recall_error(struct nfs_server
*server
, struct nfs4_state
*state
, const nfs4_stateid
*stateid
, int err
)
1555 printk(KERN_ERR
"NFS: %s: unhandled error "
1556 "%d.\n", __func__
, err
);
1561 case -NFS4ERR_BADSESSION
:
1562 case -NFS4ERR_BADSLOT
:
1563 case -NFS4ERR_BAD_HIGH_SLOT
:
1564 case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION
:
1565 case -NFS4ERR_DEADSESSION
:
1566 set_bit(NFS_DELEGATED_STATE
, &state
->flags
);
1567 nfs4_schedule_session_recovery(server
->nfs_client
->cl_session
, err
);
1569 case -NFS4ERR_STALE_CLIENTID
:
1570 case -NFS4ERR_STALE_STATEID
:
1571 set_bit(NFS_DELEGATED_STATE
, &state
->flags
);
1572 case -NFS4ERR_EXPIRED
:
1573 /* Don't recall a delegation if it was lost */
1574 nfs4_schedule_lease_recovery(server
->nfs_client
);
1576 case -NFS4ERR_MOVED
:
1577 nfs4_schedule_migration_recovery(server
);
1579 case -NFS4ERR_LEASE_MOVED
:
1580 nfs4_schedule_lease_moved_recovery(server
->nfs_client
);
1582 case -NFS4ERR_DELEG_REVOKED
:
1583 case -NFS4ERR_ADMIN_REVOKED
:
1584 case -NFS4ERR_BAD_STATEID
:
1585 case -NFS4ERR_OPENMODE
:
1586 nfs_inode_find_state_and_recover(state
->inode
,
1588 nfs4_schedule_stateid_recovery(server
, state
);
1590 case -NFS4ERR_DELAY
:
1591 case -NFS4ERR_GRACE
:
1592 set_bit(NFS_DELEGATED_STATE
, &state
->flags
);
1596 case -NFS4ERR_DENIED
:
1597 /* kill_proc(fl->fl_pid, SIGLOST, 1); */
1603 int nfs4_open_delegation_recall(struct nfs_open_context
*ctx
, struct nfs4_state
*state
, const nfs4_stateid
*stateid
)
1605 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
1606 struct nfs4_opendata
*opendata
;
1609 opendata
= nfs4_open_recoverdata_alloc(ctx
, state
,
1610 NFS4_OPEN_CLAIM_DELEG_CUR_FH
);
1611 if (IS_ERR(opendata
))
1612 return PTR_ERR(opendata
);
1613 nfs4_stateid_copy(&opendata
->o_arg
.u
.delegation
, stateid
);
1614 err
= nfs4_open_recover(opendata
, state
);
1615 nfs4_opendata_put(opendata
);
1616 return nfs4_handle_delegation_recall_error(server
, state
, stateid
, err
);
1619 static void nfs4_open_confirm_prepare(struct rpc_task
*task
, void *calldata
)
1621 struct nfs4_opendata
*data
= calldata
;
1623 nfs40_setup_sequence(data
->o_arg
.server
, &data
->o_arg
.seq_args
,
1624 &data
->o_res
.seq_res
, task
);
1627 static void nfs4_open_confirm_done(struct rpc_task
*task
, void *calldata
)
1629 struct nfs4_opendata
*data
= calldata
;
1631 nfs40_sequence_done(task
, &data
->o_res
.seq_res
);
1633 data
->rpc_status
= task
->tk_status
;
1634 if (data
->rpc_status
== 0) {
1635 nfs4_stateid_copy(&data
->o_res
.stateid
, &data
->c_res
.stateid
);
1636 nfs_confirm_seqid(&data
->owner
->so_seqid
, 0);
1637 renew_lease(data
->o_res
.server
, data
->timestamp
);
1642 static void nfs4_open_confirm_release(void *calldata
)
1644 struct nfs4_opendata
*data
= calldata
;
1645 struct nfs4_state
*state
= NULL
;
1647 /* If this request hasn't been cancelled, do nothing */
1648 if (data
->cancelled
== 0)
1650 /* In case of error, no cleanup! */
1651 if (!data
->rpc_done
)
1653 state
= nfs4_opendata_to_nfs4_state(data
);
1655 nfs4_close_state(state
, data
->o_arg
.fmode
);
1657 nfs4_opendata_put(data
);
1660 static const struct rpc_call_ops nfs4_open_confirm_ops
= {
1661 .rpc_call_prepare
= nfs4_open_confirm_prepare
,
1662 .rpc_call_done
= nfs4_open_confirm_done
,
1663 .rpc_release
= nfs4_open_confirm_release
,
1667 * Note: On error, nfs4_proc_open_confirm will free the struct nfs4_opendata
1669 static int _nfs4_proc_open_confirm(struct nfs4_opendata
*data
)
1671 struct nfs_server
*server
= NFS_SERVER(data
->dir
->d_inode
);
1672 struct rpc_task
*task
;
1673 struct rpc_message msg
= {
1674 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_OPEN_CONFIRM
],
1675 .rpc_argp
= &data
->c_arg
,
1676 .rpc_resp
= &data
->c_res
,
1677 .rpc_cred
= data
->owner
->so_cred
,
1679 struct rpc_task_setup task_setup_data
= {
1680 .rpc_client
= server
->client
,
1681 .rpc_message
= &msg
,
1682 .callback_ops
= &nfs4_open_confirm_ops
,
1683 .callback_data
= data
,
1684 .workqueue
= nfsiod_workqueue
,
1685 .flags
= RPC_TASK_ASYNC
,
1689 nfs4_init_sequence(&data
->o_arg
.seq_args
, &data
->o_res
.seq_res
, 1);
1690 kref_get(&data
->kref
);
1692 data
->rpc_status
= 0;
1693 data
->timestamp
= jiffies
;
1694 task
= rpc_run_task(&task_setup_data
);
1696 return PTR_ERR(task
);
1697 status
= nfs4_wait_for_completion_rpc_task(task
);
1699 data
->cancelled
= 1;
1702 status
= data
->rpc_status
;
1707 static void nfs4_open_prepare(struct rpc_task
*task
, void *calldata
)
1709 struct nfs4_opendata
*data
= calldata
;
1710 struct nfs4_state_owner
*sp
= data
->owner
;
1711 struct nfs_client
*clp
= sp
->so_server
->nfs_client
;
1713 if (nfs_wait_on_sequence(data
->o_arg
.seqid
, task
) != 0)
1716 * Check if we still need to send an OPEN call, or if we can use
1717 * a delegation instead.
1719 if (data
->state
!= NULL
) {
1720 struct nfs_delegation
*delegation
;
1722 if (can_open_cached(data
->state
, data
->o_arg
.fmode
, data
->o_arg
.open_flags
))
1725 delegation
= rcu_dereference(NFS_I(data
->state
->inode
)->delegation
);
1726 if (data
->o_arg
.claim
!= NFS4_OPEN_CLAIM_DELEGATE_CUR
&&
1727 data
->o_arg
.claim
!= NFS4_OPEN_CLAIM_DELEG_CUR_FH
&&
1728 can_open_delegated(delegation
, data
->o_arg
.fmode
))
1729 goto unlock_no_action
;
1732 /* Update client id. */
1733 data
->o_arg
.clientid
= clp
->cl_clientid
;
1734 switch (data
->o_arg
.claim
) {
1735 case NFS4_OPEN_CLAIM_PREVIOUS
:
1736 case NFS4_OPEN_CLAIM_DELEG_CUR_FH
:
1737 case NFS4_OPEN_CLAIM_DELEG_PREV_FH
:
1738 data
->o_arg
.open_bitmap
= &nfs4_open_noattr_bitmap
[0];
1739 case NFS4_OPEN_CLAIM_FH
:
1740 task
->tk_msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_OPEN_NOATTR
];
1741 nfs_copy_fh(&data
->o_res
.fh
, data
->o_arg
.fh
);
1743 data
->timestamp
= jiffies
;
1744 if (nfs4_setup_sequence(data
->o_arg
.server
,
1745 &data
->o_arg
.seq_args
,
1746 &data
->o_res
.seq_res
,
1748 nfs_release_seqid(data
->o_arg
.seqid
);
1750 /* Set the create mode (note dependency on the session type) */
1751 data
->o_arg
.createmode
= NFS4_CREATE_UNCHECKED
;
1752 if (data
->o_arg
.open_flags
& O_EXCL
) {
1753 data
->o_arg
.createmode
= NFS4_CREATE_EXCLUSIVE
;
1754 if (nfs4_has_persistent_session(clp
))
1755 data
->o_arg
.createmode
= NFS4_CREATE_GUARDED
;
1756 else if (clp
->cl_mvops
->minor_version
> 0)
1757 data
->o_arg
.createmode
= NFS4_CREATE_EXCLUSIVE4_1
;
1763 task
->tk_action
= NULL
;
1765 nfs4_sequence_done(task
, &data
->o_res
.seq_res
);
1768 static void nfs4_open_done(struct rpc_task
*task
, void *calldata
)
1770 struct nfs4_opendata
*data
= calldata
;
1772 data
->rpc_status
= task
->tk_status
;
1774 if (!nfs4_sequence_done(task
, &data
->o_res
.seq_res
))
1777 if (task
->tk_status
== 0) {
1778 if (data
->o_res
.f_attr
->valid
& NFS_ATTR_FATTR_TYPE
) {
1779 switch (data
->o_res
.f_attr
->mode
& S_IFMT
) {
1783 data
->rpc_status
= -ELOOP
;
1786 data
->rpc_status
= -EISDIR
;
1789 data
->rpc_status
= -ENOTDIR
;
1792 renew_lease(data
->o_res
.server
, data
->timestamp
);
1793 if (!(data
->o_res
.rflags
& NFS4_OPEN_RESULT_CONFIRM
))
1794 nfs_confirm_seqid(&data
->owner
->so_seqid
, 0);
1799 static void nfs4_open_release(void *calldata
)
1801 struct nfs4_opendata
*data
= calldata
;
1802 struct nfs4_state
*state
= NULL
;
1804 /* If this request hasn't been cancelled, do nothing */
1805 if (data
->cancelled
== 0)
1807 /* In case of error, no cleanup! */
1808 if (data
->rpc_status
!= 0 || !data
->rpc_done
)
1810 /* In case we need an open_confirm, no cleanup! */
1811 if (data
->o_res
.rflags
& NFS4_OPEN_RESULT_CONFIRM
)
1813 state
= nfs4_opendata_to_nfs4_state(data
);
1815 nfs4_close_state(state
, data
->o_arg
.fmode
);
1817 nfs4_opendata_put(data
);
1820 static const struct rpc_call_ops nfs4_open_ops
= {
1821 .rpc_call_prepare
= nfs4_open_prepare
,
1822 .rpc_call_done
= nfs4_open_done
,
1823 .rpc_release
= nfs4_open_release
,
1826 static int nfs4_run_open_task(struct nfs4_opendata
*data
, int isrecover
)
1828 struct inode
*dir
= data
->dir
->d_inode
;
1829 struct nfs_server
*server
= NFS_SERVER(dir
);
1830 struct nfs_openargs
*o_arg
= &data
->o_arg
;
1831 struct nfs_openres
*o_res
= &data
->o_res
;
1832 struct rpc_task
*task
;
1833 struct rpc_message msg
= {
1834 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_OPEN
],
1837 .rpc_cred
= data
->owner
->so_cred
,
1839 struct rpc_task_setup task_setup_data
= {
1840 .rpc_client
= server
->client
,
1841 .rpc_message
= &msg
,
1842 .callback_ops
= &nfs4_open_ops
,
1843 .callback_data
= data
,
1844 .workqueue
= nfsiod_workqueue
,
1845 .flags
= RPC_TASK_ASYNC
,
1849 nfs4_init_sequence(&o_arg
->seq_args
, &o_res
->seq_res
, 1);
1850 kref_get(&data
->kref
);
1852 data
->rpc_status
= 0;
1853 data
->cancelled
= 0;
1854 data
->is_recover
= 0;
1856 nfs4_set_sequence_privileged(&o_arg
->seq_args
);
1857 data
->is_recover
= 1;
1859 task
= rpc_run_task(&task_setup_data
);
1861 return PTR_ERR(task
);
1862 status
= nfs4_wait_for_completion_rpc_task(task
);
1864 data
->cancelled
= 1;
1867 status
= data
->rpc_status
;
1873 static int _nfs4_recover_proc_open(struct nfs4_opendata
*data
)
1875 struct inode
*dir
= data
->dir
->d_inode
;
1876 struct nfs_openres
*o_res
= &data
->o_res
;
1879 status
= nfs4_run_open_task(data
, 1);
1880 if (status
!= 0 || !data
->rpc_done
)
1883 nfs_fattr_map_and_free_names(NFS_SERVER(dir
), &data
->f_attr
);
1885 if (o_res
->rflags
& NFS4_OPEN_RESULT_CONFIRM
) {
1886 status
= _nfs4_proc_open_confirm(data
);
1894 static int nfs4_opendata_access(struct rpc_cred
*cred
,
1895 struct nfs4_opendata
*opendata
,
1896 struct nfs4_state
*state
, fmode_t fmode
,
1899 struct nfs_access_entry cache
;
1902 /* access call failed or for some reason the server doesn't
1903 * support any access modes -- defer access call until later */
1904 if (opendata
->o_res
.access_supported
== 0)
1908 /* don't check MAY_WRITE - a newly created file may not have
1909 * write mode bits, but POSIX allows the creating process to write.
1910 * use openflags to check for exec, because fmode won't
1911 * always have FMODE_EXEC set when file open for exec. */
1912 if (openflags
& __FMODE_EXEC
) {
1913 /* ONLY check for exec rights */
1915 } else if (fmode
& FMODE_READ
)
1919 cache
.jiffies
= jiffies
;
1920 nfs_access_set_mask(&cache
, opendata
->o_res
.access_result
);
1921 nfs_access_add_cache(state
->inode
, &cache
);
1923 if ((mask
& ~cache
.mask
& (MAY_READ
| MAY_EXEC
)) == 0)
1926 /* even though OPEN succeeded, access is denied. Close the file */
1927 nfs4_close_state(state
, fmode
);
1932 * Note: On error, nfs4_proc_open will free the struct nfs4_opendata
1934 static int _nfs4_proc_open(struct nfs4_opendata
*data
)
1936 struct inode
*dir
= data
->dir
->d_inode
;
1937 struct nfs_server
*server
= NFS_SERVER(dir
);
1938 struct nfs_openargs
*o_arg
= &data
->o_arg
;
1939 struct nfs_openres
*o_res
= &data
->o_res
;
1942 status
= nfs4_run_open_task(data
, 0);
1943 if (!data
->rpc_done
)
1946 if (status
== -NFS4ERR_BADNAME
&&
1947 !(o_arg
->open_flags
& O_CREAT
))
1952 nfs_fattr_map_and_free_names(server
, &data
->f_attr
);
1954 if (o_arg
->open_flags
& O_CREAT
) {
1955 update_changeattr(dir
, &o_res
->cinfo
);
1956 if (o_arg
->open_flags
& O_EXCL
)
1957 data
->file_created
= 1;
1958 else if (o_res
->cinfo
.before
!= o_res
->cinfo
.after
)
1959 data
->file_created
= 1;
1961 if ((o_res
->rflags
& NFS4_OPEN_RESULT_LOCKTYPE_POSIX
) == 0)
1962 server
->caps
&= ~NFS_CAP_POSIX_LOCK
;
1963 if(o_res
->rflags
& NFS4_OPEN_RESULT_CONFIRM
) {
1964 status
= _nfs4_proc_open_confirm(data
);
1968 if (!(o_res
->f_attr
->valid
& NFS_ATTR_FATTR
))
1969 _nfs4_proc_getattr(server
, &o_res
->fh
, o_res
->f_attr
, o_res
->f_label
);
1973 static int nfs4_recover_expired_lease(struct nfs_server
*server
)
1975 return nfs4_client_recover_expired_lease(server
->nfs_client
);
1980 * reclaim state on the server after a network partition.
1981 * Assumes caller holds the appropriate lock
1983 static int _nfs4_open_expired(struct nfs_open_context
*ctx
, struct nfs4_state
*state
)
1985 struct nfs4_opendata
*opendata
;
1988 opendata
= nfs4_open_recoverdata_alloc(ctx
, state
,
1989 NFS4_OPEN_CLAIM_FH
);
1990 if (IS_ERR(opendata
))
1991 return PTR_ERR(opendata
);
1992 ret
= nfs4_open_recover(opendata
, state
);
1994 d_drop(ctx
->dentry
);
1995 nfs4_opendata_put(opendata
);
1999 static int nfs4_do_open_expired(struct nfs_open_context
*ctx
, struct nfs4_state
*state
)
2001 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
2002 struct nfs4_exception exception
= { };
2006 err
= _nfs4_open_expired(ctx
, state
);
2007 trace_nfs4_open_expired(ctx
, 0, err
);
2008 if (nfs4_clear_cap_atomic_open_v1(server
, err
, &exception
))
2013 case -NFS4ERR_GRACE
:
2014 case -NFS4ERR_DELAY
:
2015 nfs4_handle_exception(server
, err
, &exception
);
2018 } while (exception
.retry
);
2023 static int nfs4_open_expired(struct nfs4_state_owner
*sp
, struct nfs4_state
*state
)
2025 struct nfs_open_context
*ctx
;
2028 ctx
= nfs4_state_find_open_context(state
);
2031 ret
= nfs4_do_open_expired(ctx
, state
);
2032 put_nfs_open_context(ctx
);
2036 #if defined(CONFIG_NFS_V4_1)
2037 static void nfs41_clear_delegation_stateid(struct nfs4_state
*state
)
2039 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
2040 nfs4_stateid
*stateid
= &state
->stateid
;
2041 struct nfs_delegation
*delegation
;
2042 struct rpc_cred
*cred
= NULL
;
2043 int status
= -NFS4ERR_BAD_STATEID
;
2045 /* If a state reset has been done, test_stateid is unneeded */
2046 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) == 0)
2049 /* Get the delegation credential for use by test/free_stateid */
2051 delegation
= rcu_dereference(NFS_I(state
->inode
)->delegation
);
2052 if (delegation
!= NULL
&&
2053 nfs4_stateid_match(&delegation
->stateid
, stateid
)) {
2054 cred
= get_rpccred(delegation
->cred
);
2056 status
= nfs41_test_stateid(server
, stateid
, cred
);
2057 trace_nfs4_test_delegation_stateid(state
, NULL
, status
);
2061 if (status
!= NFS_OK
) {
2062 /* Free the stateid unless the server explicitly
2063 * informs us the stateid is unrecognized. */
2064 if (status
!= -NFS4ERR_BAD_STATEID
)
2065 nfs41_free_stateid(server
, stateid
, cred
);
2066 nfs_remove_bad_delegation(state
->inode
);
2068 write_seqlock(&state
->seqlock
);
2069 nfs4_stateid_copy(&state
->stateid
, &state
->open_stateid
);
2070 write_sequnlock(&state
->seqlock
);
2071 clear_bit(NFS_DELEGATED_STATE
, &state
->flags
);
2079 * nfs41_check_open_stateid - possibly free an open stateid
2081 * @state: NFSv4 state for an inode
2083 * Returns NFS_OK if recovery for this stateid is now finished.
2084 * Otherwise a negative NFS4ERR value is returned.
2086 static int nfs41_check_open_stateid(struct nfs4_state
*state
)
2088 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
2089 nfs4_stateid
*stateid
= &state
->open_stateid
;
2090 struct rpc_cred
*cred
= state
->owner
->so_cred
;
2093 /* If a state reset has been done, test_stateid is unneeded */
2094 if ((test_bit(NFS_O_RDONLY_STATE
, &state
->flags
) == 0) &&
2095 (test_bit(NFS_O_WRONLY_STATE
, &state
->flags
) == 0) &&
2096 (test_bit(NFS_O_RDWR_STATE
, &state
->flags
) == 0))
2097 return -NFS4ERR_BAD_STATEID
;
2099 status
= nfs41_test_stateid(server
, stateid
, cred
);
2100 trace_nfs4_test_open_stateid(state
, NULL
, status
);
2101 if (status
!= NFS_OK
) {
2102 /* Free the stateid unless the server explicitly
2103 * informs us the stateid is unrecognized. */
2104 if (status
!= -NFS4ERR_BAD_STATEID
)
2105 nfs41_free_stateid(server
, stateid
, cred
);
2107 clear_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
2108 clear_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
2109 clear_bit(NFS_O_RDWR_STATE
, &state
->flags
);
2110 clear_bit(NFS_OPEN_STATE
, &state
->flags
);
2115 static int nfs41_open_expired(struct nfs4_state_owner
*sp
, struct nfs4_state
*state
)
2119 nfs41_clear_delegation_stateid(state
);
2120 status
= nfs41_check_open_stateid(state
);
2121 if (status
!= NFS_OK
)
2122 status
= nfs4_open_expired(sp
, state
);
2128 * on an EXCLUSIVE create, the server should send back a bitmask with FATTR4-*
2129 * fields corresponding to attributes that were used to store the verifier.
2130 * Make sure we clobber those fields in the later setattr call
2132 static inline void nfs4_exclusive_attrset(struct nfs4_opendata
*opendata
, struct iattr
*sattr
)
2134 if ((opendata
->o_res
.attrset
[1] & FATTR4_WORD1_TIME_ACCESS
) &&
2135 !(sattr
->ia_valid
& ATTR_ATIME_SET
))
2136 sattr
->ia_valid
|= ATTR_ATIME
;
2138 if ((opendata
->o_res
.attrset
[1] & FATTR4_WORD1_TIME_MODIFY
) &&
2139 !(sattr
->ia_valid
& ATTR_MTIME_SET
))
2140 sattr
->ia_valid
|= ATTR_MTIME
;
2143 static int _nfs4_open_and_get_state(struct nfs4_opendata
*opendata
,
2146 struct nfs_open_context
*ctx
)
2148 struct nfs4_state_owner
*sp
= opendata
->owner
;
2149 struct nfs_server
*server
= sp
->so_server
;
2150 struct dentry
*dentry
;
2151 struct nfs4_state
*state
;
2155 seq
= raw_seqcount_begin(&sp
->so_reclaim_seqcount
);
2157 ret
= _nfs4_proc_open(opendata
);
2161 state
= nfs4_opendata_to_nfs4_state(opendata
);
2162 ret
= PTR_ERR(state
);
2165 if (server
->caps
& NFS_CAP_POSIX_LOCK
)
2166 set_bit(NFS_STATE_POSIX_LOCKS
, &state
->flags
);
2168 dentry
= opendata
->dentry
;
2169 if (dentry
->d_inode
== NULL
) {
2170 /* FIXME: Is this d_drop() ever needed? */
2172 dentry
= d_add_unique(dentry
, igrab(state
->inode
));
2173 if (dentry
== NULL
) {
2174 dentry
= opendata
->dentry
;
2175 } else if (dentry
!= ctx
->dentry
) {
2177 ctx
->dentry
= dget(dentry
);
2179 nfs_set_verifier(dentry
,
2180 nfs_save_change_attribute(opendata
->dir
->d_inode
));
2183 ret
= nfs4_opendata_access(sp
->so_cred
, opendata
, state
, fmode
, flags
);
2188 if (dentry
->d_inode
== state
->inode
) {
2189 nfs_inode_attach_open_context(ctx
);
2190 if (read_seqcount_retry(&sp
->so_reclaim_seqcount
, seq
))
2191 nfs4_schedule_stateid_recovery(server
, state
);
2198 * Returns a referenced nfs4_state
2200 static int _nfs4_do_open(struct inode
*dir
,
2201 struct nfs_open_context
*ctx
,
2203 struct iattr
*sattr
,
2204 struct nfs4_label
*label
,
2207 struct nfs4_state_owner
*sp
;
2208 struct nfs4_state
*state
= NULL
;
2209 struct nfs_server
*server
= NFS_SERVER(dir
);
2210 struct nfs4_opendata
*opendata
;
2211 struct dentry
*dentry
= ctx
->dentry
;
2212 struct rpc_cred
*cred
= ctx
->cred
;
2213 struct nfs4_threshold
**ctx_th
= &ctx
->mdsthreshold
;
2214 fmode_t fmode
= ctx
->mode
& (FMODE_READ
|FMODE_WRITE
|FMODE_EXEC
);
2215 enum open_claim_type4 claim
= NFS4_OPEN_CLAIM_NULL
;
2216 struct nfs4_label
*olabel
= NULL
;
2219 /* Protect against reboot recovery conflicts */
2221 sp
= nfs4_get_state_owner(server
, cred
, GFP_KERNEL
);
2223 dprintk("nfs4_do_open: nfs4_get_state_owner failed!\n");
2226 status
= nfs4_recover_expired_lease(server
);
2228 goto err_put_state_owner
;
2229 if (dentry
->d_inode
!= NULL
)
2230 nfs4_return_incompatible_delegation(dentry
->d_inode
, fmode
);
2232 if (dentry
->d_inode
)
2233 claim
= NFS4_OPEN_CLAIM_FH
;
2234 opendata
= nfs4_opendata_alloc(dentry
, sp
, fmode
, flags
, sattr
,
2235 label
, claim
, GFP_KERNEL
);
2236 if (opendata
== NULL
)
2237 goto err_put_state_owner
;
2240 olabel
= nfs4_label_alloc(server
, GFP_KERNEL
);
2241 if (IS_ERR(olabel
)) {
2242 status
= PTR_ERR(olabel
);
2243 goto err_opendata_put
;
2247 if (ctx_th
&& server
->attr_bitmask
[2] & FATTR4_WORD2_MDSTHRESHOLD
) {
2248 opendata
->f_attr
.mdsthreshold
= pnfs_mdsthreshold_alloc();
2249 if (!opendata
->f_attr
.mdsthreshold
)
2250 goto err_free_label
;
2251 opendata
->o_arg
.open_bitmap
= &nfs4_pnfs_open_bitmap
[0];
2253 if (dentry
->d_inode
!= NULL
)
2254 opendata
->state
= nfs4_get_open_state(dentry
->d_inode
, sp
);
2256 status
= _nfs4_open_and_get_state(opendata
, fmode
, flags
, ctx
);
2258 goto err_free_label
;
2261 if ((opendata
->o_arg
.open_flags
& O_EXCL
) &&
2262 (opendata
->o_arg
.createmode
!= NFS4_CREATE_GUARDED
)) {
2263 nfs4_exclusive_attrset(opendata
, sattr
);
2265 nfs_fattr_init(opendata
->o_res
.f_attr
);
2266 status
= nfs4_do_setattr(state
->inode
, cred
,
2267 opendata
->o_res
.f_attr
, sattr
,
2268 state
, label
, olabel
);
2270 nfs_setattr_update_inode(state
->inode
, sattr
);
2271 nfs_post_op_update_inode(state
->inode
, opendata
->o_res
.f_attr
);
2272 nfs_setsecurity(state
->inode
, opendata
->o_res
.f_attr
, olabel
);
2275 if (opendata
->file_created
)
2276 *opened
|= FILE_CREATED
;
2278 if (pnfs_use_threshold(ctx_th
, opendata
->f_attr
.mdsthreshold
, server
))
2279 *ctx_th
= opendata
->f_attr
.mdsthreshold
;
2281 kfree(opendata
->f_attr
.mdsthreshold
);
2282 opendata
->f_attr
.mdsthreshold
= NULL
;
2284 nfs4_label_free(olabel
);
2286 nfs4_opendata_put(opendata
);
2287 nfs4_put_state_owner(sp
);
2290 nfs4_label_free(olabel
);
2292 kfree(opendata
->f_attr
.mdsthreshold
);
2293 nfs4_opendata_put(opendata
);
2294 err_put_state_owner
:
2295 nfs4_put_state_owner(sp
);
2301 static struct nfs4_state
*nfs4_do_open(struct inode
*dir
,
2302 struct nfs_open_context
*ctx
,
2304 struct iattr
*sattr
,
2305 struct nfs4_label
*label
,
2308 struct nfs_server
*server
= NFS_SERVER(dir
);
2309 struct nfs4_exception exception
= { };
2310 struct nfs4_state
*res
;
2314 status
= _nfs4_do_open(dir
, ctx
, flags
, sattr
, label
, opened
);
2316 trace_nfs4_open_file(ctx
, flags
, status
);
2319 /* NOTE: BAD_SEQID means the server and client disagree about the
2320 * book-keeping w.r.t. state-changing operations
2321 * (OPEN/CLOSE/LOCK/LOCKU...)
2322 * It is actually a sign of a bug on the client or on the server.
2324 * If we receive a BAD_SEQID error in the particular case of
2325 * doing an OPEN, we assume that nfs_increment_open_seqid() will
2326 * have unhashed the old state_owner for us, and that we can
2327 * therefore safely retry using a new one. We should still warn
2328 * the user though...
2330 if (status
== -NFS4ERR_BAD_SEQID
) {
2331 pr_warn_ratelimited("NFS: v4 server %s "
2332 " returned a bad sequence-id error!\n",
2333 NFS_SERVER(dir
)->nfs_client
->cl_hostname
);
2334 exception
.retry
= 1;
2338 * BAD_STATEID on OPEN means that the server cancelled our
2339 * state before it received the OPEN_CONFIRM.
2340 * Recover by retrying the request as per the discussion
2341 * on Page 181 of RFC3530.
2343 if (status
== -NFS4ERR_BAD_STATEID
) {
2344 exception
.retry
= 1;
2347 if (status
== -EAGAIN
) {
2348 /* We must have found a delegation */
2349 exception
.retry
= 1;
2352 if (nfs4_clear_cap_atomic_open_v1(server
, status
, &exception
))
2354 res
= ERR_PTR(nfs4_handle_exception(server
,
2355 status
, &exception
));
2356 } while (exception
.retry
);
2360 static int _nfs4_do_setattr(struct inode
*inode
, struct rpc_cred
*cred
,
2361 struct nfs_fattr
*fattr
, struct iattr
*sattr
,
2362 struct nfs4_state
*state
, struct nfs4_label
*ilabel
,
2363 struct nfs4_label
*olabel
)
2365 struct nfs_server
*server
= NFS_SERVER(inode
);
2366 struct nfs_setattrargs arg
= {
2367 .fh
= NFS_FH(inode
),
2370 .bitmask
= server
->attr_bitmask
,
2373 struct nfs_setattrres res
= {
2378 struct rpc_message msg
= {
2379 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETATTR
],
2384 unsigned long timestamp
= jiffies
;
2389 arg
.bitmask
= nfs4_bitmask(server
, ilabel
);
2391 arg
.bitmask
= nfs4_bitmask(server
, olabel
);
2393 nfs_fattr_init(fattr
);
2395 /* Servers should only apply open mode checks for file size changes */
2396 truncate
= (sattr
->ia_valid
& ATTR_SIZE
) ? true : false;
2397 fmode
= truncate
? FMODE_WRITE
: FMODE_READ
;
2399 if (nfs4_copy_delegation_stateid(&arg
.stateid
, inode
, fmode
)) {
2400 /* Use that stateid */
2401 } else if (truncate
&& state
!= NULL
&& nfs4_valid_open_stateid(state
)) {
2402 struct nfs_lockowner lockowner
= {
2403 .l_owner
= current
->files
,
2404 .l_pid
= current
->tgid
,
2406 nfs4_select_rw_stateid(&arg
.stateid
, state
, FMODE_WRITE
,
2409 nfs4_stateid_copy(&arg
.stateid
, &zero_stateid
);
2411 status
= nfs4_call_sync(server
->client
, server
, &msg
, &arg
.seq_args
, &res
.seq_res
, 1);
2412 if (status
== 0 && state
!= NULL
)
2413 renew_lease(server
, timestamp
);
2417 static int nfs4_do_setattr(struct inode
*inode
, struct rpc_cred
*cred
,
2418 struct nfs_fattr
*fattr
, struct iattr
*sattr
,
2419 struct nfs4_state
*state
, struct nfs4_label
*ilabel
,
2420 struct nfs4_label
*olabel
)
2422 struct nfs_server
*server
= NFS_SERVER(inode
);
2423 struct nfs4_exception exception
= {
2429 err
= _nfs4_do_setattr(inode
, cred
, fattr
, sattr
, state
, ilabel
, olabel
);
2430 trace_nfs4_setattr(inode
, err
);
2432 case -NFS4ERR_OPENMODE
:
2433 if (!(sattr
->ia_valid
& ATTR_SIZE
)) {
2434 pr_warn_once("NFSv4: server %s is incorrectly "
2435 "applying open mode checks to "
2436 "a SETATTR that is not "
2437 "changing file size.\n",
2438 server
->nfs_client
->cl_hostname
);
2440 if (state
&& !(state
->state
& FMODE_WRITE
)) {
2442 if (sattr
->ia_valid
& ATTR_OPEN
)
2447 err
= nfs4_handle_exception(server
, err
, &exception
);
2448 } while (exception
.retry
);
2453 struct nfs4_closedata
{
2454 struct inode
*inode
;
2455 struct nfs4_state
*state
;
2456 struct nfs_closeargs arg
;
2457 struct nfs_closeres res
;
2458 struct nfs_fattr fattr
;
2459 unsigned long timestamp
;
2464 static void nfs4_free_closedata(void *data
)
2466 struct nfs4_closedata
*calldata
= data
;
2467 struct nfs4_state_owner
*sp
= calldata
->state
->owner
;
2468 struct super_block
*sb
= calldata
->state
->inode
->i_sb
;
2471 pnfs_roc_release(calldata
->state
->inode
);
2472 nfs4_put_open_state(calldata
->state
);
2473 nfs_free_seqid(calldata
->arg
.seqid
);
2474 nfs4_put_state_owner(sp
);
2475 nfs_sb_deactive(sb
);
2479 static void nfs4_close_clear_stateid_flags(struct nfs4_state
*state
,
2482 spin_lock(&state
->owner
->so_lock
);
2483 clear_bit(NFS_O_RDWR_STATE
, &state
->flags
);
2484 switch (fmode
& (FMODE_READ
|FMODE_WRITE
)) {
2486 clear_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
2489 clear_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
2492 clear_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
2493 clear_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
2494 clear_bit(NFS_OPEN_STATE
, &state
->flags
);
2496 spin_unlock(&state
->owner
->so_lock
);
2499 static void nfs4_close_done(struct rpc_task
*task
, void *data
)
2501 struct nfs4_closedata
*calldata
= data
;
2502 struct nfs4_state
*state
= calldata
->state
;
2503 struct nfs_server
*server
= NFS_SERVER(calldata
->inode
);
2505 dprintk("%s: begin!\n", __func__
);
2506 if (!nfs4_sequence_done(task
, &calldata
->res
.seq_res
))
2508 trace_nfs4_close(state
, &calldata
->arg
, &calldata
->res
, task
->tk_status
);
2509 /* hmm. we are done with the inode, and in the process of freeing
2510 * the state_owner. we keep this around to process errors
2512 switch (task
->tk_status
) {
2515 pnfs_roc_set_barrier(state
->inode
,
2516 calldata
->roc_barrier
);
2517 nfs_set_open_stateid(state
, &calldata
->res
.stateid
, 0);
2518 renew_lease(server
, calldata
->timestamp
);
2520 case -NFS4ERR_ADMIN_REVOKED
:
2521 case -NFS4ERR_STALE_STATEID
:
2522 case -NFS4ERR_OLD_STATEID
:
2523 case -NFS4ERR_BAD_STATEID
:
2524 case -NFS4ERR_EXPIRED
:
2525 if (calldata
->arg
.fmode
== 0)
2528 if (nfs4_async_handle_error(task
, server
, state
) == -EAGAIN
) {
2529 rpc_restart_call_prepare(task
);
2533 nfs4_close_clear_stateid_flags(state
, calldata
->arg
.fmode
);
2535 nfs_release_seqid(calldata
->arg
.seqid
);
2536 nfs_refresh_inode(calldata
->inode
, calldata
->res
.fattr
);
2537 dprintk("%s: done, ret = %d!\n", __func__
, task
->tk_status
);
2540 static void nfs4_close_prepare(struct rpc_task
*task
, void *data
)
2542 struct nfs4_closedata
*calldata
= data
;
2543 struct nfs4_state
*state
= calldata
->state
;
2544 struct inode
*inode
= calldata
->inode
;
2547 dprintk("%s: begin!\n", __func__
);
2548 if (nfs_wait_on_sequence(calldata
->arg
.seqid
, task
) != 0)
2551 task
->tk_msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_OPEN_DOWNGRADE
];
2552 calldata
->arg
.fmode
= FMODE_READ
|FMODE_WRITE
;
2553 spin_lock(&state
->owner
->so_lock
);
2554 /* Calculate the change in open mode */
2555 if (state
->n_rdwr
== 0) {
2556 if (state
->n_rdonly
== 0) {
2557 call_close
|= test_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
2558 call_close
|= test_bit(NFS_O_RDWR_STATE
, &state
->flags
);
2559 calldata
->arg
.fmode
&= ~FMODE_READ
;
2561 if (state
->n_wronly
== 0) {
2562 call_close
|= test_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
2563 call_close
|= test_bit(NFS_O_RDWR_STATE
, &state
->flags
);
2564 calldata
->arg
.fmode
&= ~FMODE_WRITE
;
2567 if (!nfs4_valid_open_stateid(state
))
2569 spin_unlock(&state
->owner
->so_lock
);
2572 /* Note: exit _without_ calling nfs4_close_done */
2576 if (calldata
->arg
.fmode
== 0) {
2577 task
->tk_msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_CLOSE
];
2578 if (calldata
->roc
&&
2579 pnfs_roc_drain(inode
, &calldata
->roc_barrier
, task
)) {
2580 nfs_release_seqid(calldata
->arg
.seqid
);
2585 nfs_fattr_init(calldata
->res
.fattr
);
2586 calldata
->timestamp
= jiffies
;
2587 if (nfs4_setup_sequence(NFS_SERVER(inode
),
2588 &calldata
->arg
.seq_args
,
2589 &calldata
->res
.seq_res
,
2591 nfs_release_seqid(calldata
->arg
.seqid
);
2592 dprintk("%s: done!\n", __func__
);
2595 task
->tk_action
= NULL
;
2597 nfs4_sequence_done(task
, &calldata
->res
.seq_res
);
2600 static const struct rpc_call_ops nfs4_close_ops
= {
2601 .rpc_call_prepare
= nfs4_close_prepare
,
2602 .rpc_call_done
= nfs4_close_done
,
2603 .rpc_release
= nfs4_free_closedata
,
2607 * It is possible for data to be read/written from a mem-mapped file
2608 * after the sys_close call (which hits the vfs layer as a flush).
2609 * This means that we can't safely call nfsv4 close on a file until
2610 * the inode is cleared. This in turn means that we are not good
2611 * NFSv4 citizens - we do not indicate to the server to update the file's
2612 * share state even when we are done with one of the three share
2613 * stateid's in the inode.
2615 * NOTE: Caller must be holding the sp->so_owner semaphore!
2617 int nfs4_do_close(struct nfs4_state
*state
, gfp_t gfp_mask
, int wait
)
2619 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
2620 struct nfs4_closedata
*calldata
;
2621 struct nfs4_state_owner
*sp
= state
->owner
;
2622 struct rpc_task
*task
;
2623 struct rpc_message msg
= {
2624 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_CLOSE
],
2625 .rpc_cred
= state
->owner
->so_cred
,
2627 struct rpc_task_setup task_setup_data
= {
2628 .rpc_client
= server
->client
,
2629 .rpc_message
= &msg
,
2630 .callback_ops
= &nfs4_close_ops
,
2631 .workqueue
= nfsiod_workqueue
,
2632 .flags
= RPC_TASK_ASYNC
,
2634 int status
= -ENOMEM
;
2636 nfs4_state_protect(server
->nfs_client
, NFS_SP4_MACH_CRED_CLEANUP
,
2637 &task_setup_data
.rpc_client
, &msg
);
2639 calldata
= kzalloc(sizeof(*calldata
), gfp_mask
);
2640 if (calldata
== NULL
)
2642 nfs4_init_sequence(&calldata
->arg
.seq_args
, &calldata
->res
.seq_res
, 1);
2643 calldata
->inode
= state
->inode
;
2644 calldata
->state
= state
;
2645 calldata
->arg
.fh
= NFS_FH(state
->inode
);
2646 calldata
->arg
.stateid
= &state
->open_stateid
;
2647 /* Serialization for the sequence id */
2648 calldata
->arg
.seqid
= nfs_alloc_seqid(&state
->owner
->so_seqid
, gfp_mask
);
2649 if (calldata
->arg
.seqid
== NULL
)
2650 goto out_free_calldata
;
2651 calldata
->arg
.fmode
= 0;
2652 calldata
->arg
.bitmask
= server
->cache_consistency_bitmask
;
2653 calldata
->res
.fattr
= &calldata
->fattr
;
2654 calldata
->res
.seqid
= calldata
->arg
.seqid
;
2655 calldata
->res
.server
= server
;
2656 calldata
->roc
= pnfs_roc(state
->inode
);
2657 nfs_sb_active(calldata
->inode
->i_sb
);
2659 msg
.rpc_argp
= &calldata
->arg
;
2660 msg
.rpc_resp
= &calldata
->res
;
2661 task_setup_data
.callback_data
= calldata
;
2662 task
= rpc_run_task(&task_setup_data
);
2664 return PTR_ERR(task
);
2667 status
= rpc_wait_for_completion_task(task
);
2673 nfs4_put_open_state(state
);
2674 nfs4_put_state_owner(sp
);
2678 static struct inode
*
2679 nfs4_atomic_open(struct inode
*dir
, struct nfs_open_context
*ctx
,
2680 int open_flags
, struct iattr
*attr
, int *opened
)
2682 struct nfs4_state
*state
;
2683 struct nfs4_label l
= {0, 0, 0, NULL
}, *label
= NULL
;
2685 label
= nfs4_label_init_security(dir
, ctx
->dentry
, attr
, &l
);
2687 /* Protect against concurrent sillydeletes */
2688 state
= nfs4_do_open(dir
, ctx
, open_flags
, attr
, label
, opened
);
2690 nfs4_label_release_security(label
);
2693 return ERR_CAST(state
);
2694 return state
->inode
;
2697 static void nfs4_close_context(struct nfs_open_context
*ctx
, int is_sync
)
2699 if (ctx
->state
== NULL
)
2702 nfs4_close_sync(ctx
->state
, ctx
->mode
);
2704 nfs4_close_state(ctx
->state
, ctx
->mode
);
2707 #define FATTR4_WORD1_NFS40_MASK (2*FATTR4_WORD1_MOUNTED_ON_FILEID - 1UL)
2708 #define FATTR4_WORD2_NFS41_MASK (2*FATTR4_WORD2_SUPPATTR_EXCLCREAT - 1UL)
2709 #define FATTR4_WORD2_NFS42_MASK (2*FATTR4_WORD2_CHANGE_SECURITY_LABEL - 1UL)
2711 static int _nfs4_server_capabilities(struct nfs_server
*server
, struct nfs_fh
*fhandle
)
2713 struct nfs4_server_caps_arg args
= {
2716 struct nfs4_server_caps_res res
= {};
2717 struct rpc_message msg
= {
2718 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SERVER_CAPS
],
2724 status
= nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
2726 /* Sanity check the server answers */
2727 switch (server
->nfs_client
->cl_minorversion
) {
2729 res
.attr_bitmask
[1] &= FATTR4_WORD1_NFS40_MASK
;
2730 res
.attr_bitmask
[2] = 0;
2733 res
.attr_bitmask
[2] &= FATTR4_WORD2_NFS41_MASK
;
2736 res
.attr_bitmask
[2] &= FATTR4_WORD2_NFS42_MASK
;
2738 memcpy(server
->attr_bitmask
, res
.attr_bitmask
, sizeof(server
->attr_bitmask
));
2739 server
->caps
&= ~(NFS_CAP_ACLS
|NFS_CAP_HARDLINKS
|
2740 NFS_CAP_SYMLINKS
|NFS_CAP_FILEID
|
2741 NFS_CAP_MODE
|NFS_CAP_NLINK
|NFS_CAP_OWNER
|
2742 NFS_CAP_OWNER_GROUP
|NFS_CAP_ATIME
|
2743 NFS_CAP_CTIME
|NFS_CAP_MTIME
|
2744 NFS_CAP_SECURITY_LABEL
);
2745 if (res
.attr_bitmask
[0] & FATTR4_WORD0_ACL
&&
2746 res
.acl_bitmask
& ACL4_SUPPORT_ALLOW_ACL
)
2747 server
->caps
|= NFS_CAP_ACLS
;
2748 if (res
.has_links
!= 0)
2749 server
->caps
|= NFS_CAP_HARDLINKS
;
2750 if (res
.has_symlinks
!= 0)
2751 server
->caps
|= NFS_CAP_SYMLINKS
;
2752 if (res
.attr_bitmask
[0] & FATTR4_WORD0_FILEID
)
2753 server
->caps
|= NFS_CAP_FILEID
;
2754 if (res
.attr_bitmask
[1] & FATTR4_WORD1_MODE
)
2755 server
->caps
|= NFS_CAP_MODE
;
2756 if (res
.attr_bitmask
[1] & FATTR4_WORD1_NUMLINKS
)
2757 server
->caps
|= NFS_CAP_NLINK
;
2758 if (res
.attr_bitmask
[1] & FATTR4_WORD1_OWNER
)
2759 server
->caps
|= NFS_CAP_OWNER
;
2760 if (res
.attr_bitmask
[1] & FATTR4_WORD1_OWNER_GROUP
)
2761 server
->caps
|= NFS_CAP_OWNER_GROUP
;
2762 if (res
.attr_bitmask
[1] & FATTR4_WORD1_TIME_ACCESS
)
2763 server
->caps
|= NFS_CAP_ATIME
;
2764 if (res
.attr_bitmask
[1] & FATTR4_WORD1_TIME_METADATA
)
2765 server
->caps
|= NFS_CAP_CTIME
;
2766 if (res
.attr_bitmask
[1] & FATTR4_WORD1_TIME_MODIFY
)
2767 server
->caps
|= NFS_CAP_MTIME
;
2768 #ifdef CONFIG_NFS_V4_SECURITY_LABEL
2769 if (res
.attr_bitmask
[2] & FATTR4_WORD2_SECURITY_LABEL
)
2770 server
->caps
|= NFS_CAP_SECURITY_LABEL
;
2772 memcpy(server
->attr_bitmask_nl
, res
.attr_bitmask
,
2773 sizeof(server
->attr_bitmask
));
2774 server
->attr_bitmask_nl
[2] &= ~FATTR4_WORD2_SECURITY_LABEL
;
2776 memcpy(server
->cache_consistency_bitmask
, res
.attr_bitmask
, sizeof(server
->cache_consistency_bitmask
));
2777 server
->cache_consistency_bitmask
[0] &= FATTR4_WORD0_CHANGE
|FATTR4_WORD0_SIZE
;
2778 server
->cache_consistency_bitmask
[1] &= FATTR4_WORD1_TIME_METADATA
|FATTR4_WORD1_TIME_MODIFY
;
2779 server
->cache_consistency_bitmask
[2] = 0;
2780 server
->acl_bitmask
= res
.acl_bitmask
;
2781 server
->fh_expire_type
= res
.fh_expire_type
;
2787 int nfs4_server_capabilities(struct nfs_server
*server
, struct nfs_fh
*fhandle
)
2789 struct nfs4_exception exception
= { };
2792 err
= nfs4_handle_exception(server
,
2793 _nfs4_server_capabilities(server
, fhandle
),
2795 } while (exception
.retry
);
2799 static int _nfs4_lookup_root(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
2800 struct nfs_fsinfo
*info
)
2803 struct nfs4_lookup_root_arg args
= {
2806 struct nfs4_lookup_res res
= {
2808 .fattr
= info
->fattr
,
2811 struct rpc_message msg
= {
2812 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOOKUP_ROOT
],
2817 bitmask
[0] = nfs4_fattr_bitmap
[0];
2818 bitmask
[1] = nfs4_fattr_bitmap
[1];
2820 * Process the label in the upcoming getfattr
2822 bitmask
[2] = nfs4_fattr_bitmap
[2] & ~FATTR4_WORD2_SECURITY_LABEL
;
2824 nfs_fattr_init(info
->fattr
);
2825 return nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
2828 static int nfs4_lookup_root(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
2829 struct nfs_fsinfo
*info
)
2831 struct nfs4_exception exception
= { };
2834 err
= _nfs4_lookup_root(server
, fhandle
, info
);
2835 trace_nfs4_lookup_root(server
, fhandle
, info
->fattr
, err
);
2838 case -NFS4ERR_WRONGSEC
:
2841 err
= nfs4_handle_exception(server
, err
, &exception
);
2843 } while (exception
.retry
);
2848 static int nfs4_lookup_root_sec(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
2849 struct nfs_fsinfo
*info
, rpc_authflavor_t flavor
)
2851 struct rpc_auth_create_args auth_args
= {
2852 .pseudoflavor
= flavor
,
2854 struct rpc_auth
*auth
;
2857 auth
= rpcauth_create(&auth_args
, server
->client
);
2862 ret
= nfs4_lookup_root(server
, fhandle
, info
);
2868 * Retry pseudoroot lookup with various security flavors. We do this when:
2870 * NFSv4.0: the PUTROOTFH operation returns NFS4ERR_WRONGSEC
2871 * NFSv4.1: the server does not support the SECINFO_NO_NAME operation
2873 * Returns zero on success, or a negative NFS4ERR value, or a
2874 * negative errno value.
2876 static int nfs4_find_root_sec(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
2877 struct nfs_fsinfo
*info
)
2879 /* Per 3530bis 15.33.5 */
2880 static const rpc_authflavor_t flav_array
[] = {
2884 RPC_AUTH_UNIX
, /* courtesy */
2887 int status
= -EPERM
;
2890 if (server
->auth_info
.flavor_len
> 0) {
2891 /* try each flavor specified by user */
2892 for (i
= 0; i
< server
->auth_info
.flavor_len
; i
++) {
2893 status
= nfs4_lookup_root_sec(server
, fhandle
, info
,
2894 server
->auth_info
.flavors
[i
]);
2895 if (status
== -NFS4ERR_WRONGSEC
|| status
== -EACCES
)
2900 /* no flavors specified by user, try default list */
2901 for (i
= 0; i
< ARRAY_SIZE(flav_array
); i
++) {
2902 status
= nfs4_lookup_root_sec(server
, fhandle
, info
,
2904 if (status
== -NFS4ERR_WRONGSEC
|| status
== -EACCES
)
2911 * -EACCESS could mean that the user doesn't have correct permissions
2912 * to access the mount. It could also mean that we tried to mount
2913 * with a gss auth flavor, but rpc.gssd isn't running. Either way,
2914 * existing mount programs don't handle -EACCES very well so it should
2915 * be mapped to -EPERM instead.
2917 if (status
== -EACCES
)
2922 static int nfs4_do_find_root_sec(struct nfs_server
*server
,
2923 struct nfs_fh
*fhandle
, struct nfs_fsinfo
*info
)
2925 int mv
= server
->nfs_client
->cl_minorversion
;
2926 return nfs_v4_minor_ops
[mv
]->find_root_sec(server
, fhandle
, info
);
2930 * nfs4_proc_get_rootfh - get file handle for server's pseudoroot
2931 * @server: initialized nfs_server handle
2932 * @fhandle: we fill in the pseudo-fs root file handle
2933 * @info: we fill in an FSINFO struct
2934 * @auth_probe: probe the auth flavours
2936 * Returns zero on success, or a negative errno.
2938 int nfs4_proc_get_rootfh(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
2939 struct nfs_fsinfo
*info
,
2944 switch (auth_probe
) {
2946 status
= nfs4_lookup_root(server
, fhandle
, info
);
2947 if (status
!= -NFS4ERR_WRONGSEC
)
2950 status
= nfs4_do_find_root_sec(server
, fhandle
, info
);
2954 status
= nfs4_server_capabilities(server
, fhandle
);
2956 status
= nfs4_do_fsinfo(server
, fhandle
, info
);
2958 return nfs4_map_errors(status
);
2961 static int nfs4_proc_get_root(struct nfs_server
*server
, struct nfs_fh
*mntfh
,
2962 struct nfs_fsinfo
*info
)
2965 struct nfs_fattr
*fattr
= info
->fattr
;
2966 struct nfs4_label
*label
= NULL
;
2968 error
= nfs4_server_capabilities(server
, mntfh
);
2970 dprintk("nfs4_get_root: getcaps error = %d\n", -error
);
2974 label
= nfs4_label_alloc(server
, GFP_KERNEL
);
2976 return PTR_ERR(label
);
2978 error
= nfs4_proc_getattr(server
, mntfh
, fattr
, label
);
2980 dprintk("nfs4_get_root: getattr error = %d\n", -error
);
2981 goto err_free_label
;
2984 if (fattr
->valid
& NFS_ATTR_FATTR_FSID
&&
2985 !nfs_fsid_equal(&server
->fsid
, &fattr
->fsid
))
2986 memcpy(&server
->fsid
, &fattr
->fsid
, sizeof(server
->fsid
));
2989 nfs4_label_free(label
);
2995 * Get locations and (maybe) other attributes of a referral.
2996 * Note that we'll actually follow the referral later when
2997 * we detect fsid mismatch in inode revalidation
2999 static int nfs4_get_referral(struct rpc_clnt
*client
, struct inode
*dir
,
3000 const struct qstr
*name
, struct nfs_fattr
*fattr
,
3001 struct nfs_fh
*fhandle
)
3003 int status
= -ENOMEM
;
3004 struct page
*page
= NULL
;
3005 struct nfs4_fs_locations
*locations
= NULL
;
3007 page
= alloc_page(GFP_KERNEL
);
3010 locations
= kmalloc(sizeof(struct nfs4_fs_locations
), GFP_KERNEL
);
3011 if (locations
== NULL
)
3014 status
= nfs4_proc_fs_locations(client
, dir
, name
, locations
, page
);
3019 * If the fsid didn't change, this is a migration event, not a
3020 * referral. Cause us to drop into the exception handler, which
3021 * will kick off migration recovery.
3023 if (nfs_fsid_equal(&NFS_SERVER(dir
)->fsid
, &locations
->fattr
.fsid
)) {
3024 dprintk("%s: server did not return a different fsid for"
3025 " a referral at %s\n", __func__
, name
->name
);
3026 status
= -NFS4ERR_MOVED
;
3029 /* Fixup attributes for the nfs_lookup() call to nfs_fhget() */
3030 nfs_fixup_referral_attributes(&locations
->fattr
);
3032 /* replace the lookup nfs_fattr with the locations nfs_fattr */
3033 memcpy(fattr
, &locations
->fattr
, sizeof(struct nfs_fattr
));
3034 memset(fhandle
, 0, sizeof(struct nfs_fh
));
3042 static int _nfs4_proc_getattr(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
3043 struct nfs_fattr
*fattr
, struct nfs4_label
*label
)
3045 struct nfs4_getattr_arg args
= {
3047 .bitmask
= server
->attr_bitmask
,
3049 struct nfs4_getattr_res res
= {
3054 struct rpc_message msg
= {
3055 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GETATTR
],
3060 args
.bitmask
= nfs4_bitmask(server
, label
);
3062 nfs_fattr_init(fattr
);
3063 return nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
3066 static int nfs4_proc_getattr(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
3067 struct nfs_fattr
*fattr
, struct nfs4_label
*label
)
3069 struct nfs4_exception exception
= { };
3072 err
= _nfs4_proc_getattr(server
, fhandle
, fattr
, label
);
3073 trace_nfs4_getattr(server
, fhandle
, fattr
, err
);
3074 err
= nfs4_handle_exception(server
, err
,
3076 } while (exception
.retry
);
3081 * The file is not closed if it is opened due to the a request to change
3082 * the size of the file. The open call will not be needed once the
3083 * VFS layer lookup-intents are implemented.
3085 * Close is called when the inode is destroyed.
3086 * If we haven't opened the file for O_WRONLY, we
3087 * need to in the size_change case to obtain a stateid.
3090 * Because OPEN is always done by name in nfsv4, it is
3091 * possible that we opened a different file by the same
3092 * name. We can recognize this race condition, but we
3093 * can't do anything about it besides returning an error.
3095 * This will be fixed with VFS changes (lookup-intent).
3098 nfs4_proc_setattr(struct dentry
*dentry
, struct nfs_fattr
*fattr
,
3099 struct iattr
*sattr
)
3101 struct inode
*inode
= dentry
->d_inode
;
3102 struct rpc_cred
*cred
= NULL
;
3103 struct nfs4_state
*state
= NULL
;
3104 struct nfs4_label
*label
= NULL
;
3107 if (pnfs_ld_layoutret_on_setattr(inode
))
3108 pnfs_commit_and_return_layout(inode
);
3110 nfs_fattr_init(fattr
);
3112 /* Deal with open(O_TRUNC) */
3113 if (sattr
->ia_valid
& ATTR_OPEN
)
3114 sattr
->ia_valid
&= ~(ATTR_MTIME
|ATTR_CTIME
);
3116 /* Optimization: if the end result is no change, don't RPC */
3117 if ((sattr
->ia_valid
& ~(ATTR_FILE
|ATTR_OPEN
)) == 0)
3120 /* Search for an existing open(O_WRITE) file */
3121 if (sattr
->ia_valid
& ATTR_FILE
) {
3122 struct nfs_open_context
*ctx
;
3124 ctx
= nfs_file_open_context(sattr
->ia_file
);
3131 label
= nfs4_label_alloc(NFS_SERVER(inode
), GFP_KERNEL
);
3133 return PTR_ERR(label
);
3135 status
= nfs4_do_setattr(inode
, cred
, fattr
, sattr
, state
, NULL
, label
);
3137 nfs_setattr_update_inode(inode
, sattr
);
3138 nfs_setsecurity(inode
, fattr
, label
);
3140 nfs4_label_free(label
);
3144 static int _nfs4_proc_lookup(struct rpc_clnt
*clnt
, struct inode
*dir
,
3145 const struct qstr
*name
, struct nfs_fh
*fhandle
,
3146 struct nfs_fattr
*fattr
, struct nfs4_label
*label
)
3148 struct nfs_server
*server
= NFS_SERVER(dir
);
3150 struct nfs4_lookup_arg args
= {
3151 .bitmask
= server
->attr_bitmask
,
3152 .dir_fh
= NFS_FH(dir
),
3155 struct nfs4_lookup_res res
= {
3161 struct rpc_message msg
= {
3162 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOOKUP
],
3167 args
.bitmask
= nfs4_bitmask(server
, label
);
3169 nfs_fattr_init(fattr
);
3171 dprintk("NFS call lookup %s\n", name
->name
);
3172 status
= nfs4_call_sync(clnt
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
3173 dprintk("NFS reply lookup: %d\n", status
);
3177 static void nfs_fixup_secinfo_attributes(struct nfs_fattr
*fattr
)
3179 fattr
->valid
|= NFS_ATTR_FATTR_TYPE
| NFS_ATTR_FATTR_MODE
|
3180 NFS_ATTR_FATTR_NLINK
| NFS_ATTR_FATTR_MOUNTPOINT
;
3181 fattr
->mode
= S_IFDIR
| S_IRUGO
| S_IXUGO
;
3185 static int nfs4_proc_lookup_common(struct rpc_clnt
**clnt
, struct inode
*dir
,
3186 struct qstr
*name
, struct nfs_fh
*fhandle
,
3187 struct nfs_fattr
*fattr
, struct nfs4_label
*label
)
3189 struct nfs4_exception exception
= { };
3190 struct rpc_clnt
*client
= *clnt
;
3193 err
= _nfs4_proc_lookup(client
, dir
, name
, fhandle
, fattr
, label
);
3194 trace_nfs4_lookup(dir
, name
, err
);
3196 case -NFS4ERR_BADNAME
:
3199 case -NFS4ERR_MOVED
:
3200 err
= nfs4_get_referral(client
, dir
, name
, fattr
, fhandle
);
3202 case -NFS4ERR_WRONGSEC
:
3204 if (client
!= *clnt
)
3206 client
= nfs4_create_sec_client(client
, dir
, name
);
3208 return PTR_ERR(client
);
3210 exception
.retry
= 1;
3213 err
= nfs4_handle_exception(NFS_SERVER(dir
), err
, &exception
);
3215 } while (exception
.retry
);
3220 else if (client
!= *clnt
)
3221 rpc_shutdown_client(client
);
3226 static int nfs4_proc_lookup(struct inode
*dir
, struct qstr
*name
,
3227 struct nfs_fh
*fhandle
, struct nfs_fattr
*fattr
,
3228 struct nfs4_label
*label
)
3231 struct rpc_clnt
*client
= NFS_CLIENT(dir
);
3233 status
= nfs4_proc_lookup_common(&client
, dir
, name
, fhandle
, fattr
, label
);
3234 if (client
!= NFS_CLIENT(dir
)) {
3235 rpc_shutdown_client(client
);
3236 nfs_fixup_secinfo_attributes(fattr
);
3242 nfs4_proc_lookup_mountpoint(struct inode
*dir
, struct qstr
*name
,
3243 struct nfs_fh
*fhandle
, struct nfs_fattr
*fattr
)
3245 struct rpc_clnt
*client
= NFS_CLIENT(dir
);
3248 status
= nfs4_proc_lookup_common(&client
, dir
, name
, fhandle
, fattr
, NULL
);
3250 return ERR_PTR(status
);
3251 return (client
== NFS_CLIENT(dir
)) ? rpc_clone_client(client
) : client
;
3254 static int _nfs4_proc_access(struct inode
*inode
, struct nfs_access_entry
*entry
)
3256 struct nfs_server
*server
= NFS_SERVER(inode
);
3257 struct nfs4_accessargs args
= {
3258 .fh
= NFS_FH(inode
),
3259 .bitmask
= server
->cache_consistency_bitmask
,
3261 struct nfs4_accessres res
= {
3264 struct rpc_message msg
= {
3265 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_ACCESS
],
3268 .rpc_cred
= entry
->cred
,
3270 int mode
= entry
->mask
;
3274 * Determine which access bits we want to ask for...
3276 if (mode
& MAY_READ
)
3277 args
.access
|= NFS4_ACCESS_READ
;
3278 if (S_ISDIR(inode
->i_mode
)) {
3279 if (mode
& MAY_WRITE
)
3280 args
.access
|= NFS4_ACCESS_MODIFY
| NFS4_ACCESS_EXTEND
| NFS4_ACCESS_DELETE
;
3281 if (mode
& MAY_EXEC
)
3282 args
.access
|= NFS4_ACCESS_LOOKUP
;
3284 if (mode
& MAY_WRITE
)
3285 args
.access
|= NFS4_ACCESS_MODIFY
| NFS4_ACCESS_EXTEND
;
3286 if (mode
& MAY_EXEC
)
3287 args
.access
|= NFS4_ACCESS_EXECUTE
;
3290 res
.fattr
= nfs_alloc_fattr();
3291 if (res
.fattr
== NULL
)
3294 status
= nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
3296 nfs_access_set_mask(entry
, res
.access
);
3297 nfs_refresh_inode(inode
, res
.fattr
);
3299 nfs_free_fattr(res
.fattr
);
3303 static int nfs4_proc_access(struct inode
*inode
, struct nfs_access_entry
*entry
)
3305 struct nfs4_exception exception
= { };
3308 err
= _nfs4_proc_access(inode
, entry
);
3309 trace_nfs4_access(inode
, err
);
3310 err
= nfs4_handle_exception(NFS_SERVER(inode
), err
,
3312 } while (exception
.retry
);
3317 * TODO: For the time being, we don't try to get any attributes
3318 * along with any of the zero-copy operations READ, READDIR,
3321 * In the case of the first three, we want to put the GETATTR
3322 * after the read-type operation -- this is because it is hard
3323 * to predict the length of a GETATTR response in v4, and thus
3324 * align the READ data correctly. This means that the GETATTR
3325 * may end up partially falling into the page cache, and we should
3326 * shift it into the 'tail' of the xdr_buf before processing.
3327 * To do this efficiently, we need to know the total length
3328 * of data received, which doesn't seem to be available outside
3331 * In the case of WRITE, we also want to put the GETATTR after
3332 * the operation -- in this case because we want to make sure
3333 * we get the post-operation mtime and size.
3335 * Both of these changes to the XDR layer would in fact be quite
3336 * minor, but I decided to leave them for a subsequent patch.
3338 static int _nfs4_proc_readlink(struct inode
*inode
, struct page
*page
,
3339 unsigned int pgbase
, unsigned int pglen
)
3341 struct nfs4_readlink args
= {
3342 .fh
= NFS_FH(inode
),
3347 struct nfs4_readlink_res res
;
3348 struct rpc_message msg
= {
3349 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_READLINK
],
3354 return nfs4_call_sync(NFS_SERVER(inode
)->client
, NFS_SERVER(inode
), &msg
, &args
.seq_args
, &res
.seq_res
, 0);
3357 static int nfs4_proc_readlink(struct inode
*inode
, struct page
*page
,
3358 unsigned int pgbase
, unsigned int pglen
)
3360 struct nfs4_exception exception
= { };
3363 err
= _nfs4_proc_readlink(inode
, page
, pgbase
, pglen
);
3364 trace_nfs4_readlink(inode
, err
);
3365 err
= nfs4_handle_exception(NFS_SERVER(inode
), err
,
3367 } while (exception
.retry
);
3372 * This is just for mknod. open(O_CREAT) will always do ->open_context().
3375 nfs4_proc_create(struct inode
*dir
, struct dentry
*dentry
, struct iattr
*sattr
,
3378 struct nfs4_label l
, *ilabel
= NULL
;
3379 struct nfs_open_context
*ctx
;
3380 struct nfs4_state
*state
;
3384 ctx
= alloc_nfs_open_context(dentry
, FMODE_READ
);
3386 return PTR_ERR(ctx
);
3388 ilabel
= nfs4_label_init_security(dir
, dentry
, sattr
, &l
);
3390 sattr
->ia_mode
&= ~current_umask();
3391 state
= nfs4_do_open(dir
, ctx
, flags
, sattr
, ilabel
, &opened
);
3392 if (IS_ERR(state
)) {
3393 status
= PTR_ERR(state
);
3397 nfs4_label_release_security(ilabel
);
3398 put_nfs_open_context(ctx
);
3402 static int _nfs4_proc_remove(struct inode
*dir
, struct qstr
*name
)
3404 struct nfs_server
*server
= NFS_SERVER(dir
);
3405 struct nfs_removeargs args
= {
3409 struct nfs_removeres res
= {
3412 struct rpc_message msg
= {
3413 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_REMOVE
],
3419 status
= nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 1);
3421 update_changeattr(dir
, &res
.cinfo
);
3425 static int nfs4_proc_remove(struct inode
*dir
, struct qstr
*name
)
3427 struct nfs4_exception exception
= { };
3430 err
= _nfs4_proc_remove(dir
, name
);
3431 trace_nfs4_remove(dir
, name
, err
);
3432 err
= nfs4_handle_exception(NFS_SERVER(dir
), err
,
3434 } while (exception
.retry
);
3438 static void nfs4_proc_unlink_setup(struct rpc_message
*msg
, struct inode
*dir
)
3440 struct nfs_server
*server
= NFS_SERVER(dir
);
3441 struct nfs_removeargs
*args
= msg
->rpc_argp
;
3442 struct nfs_removeres
*res
= msg
->rpc_resp
;
3444 res
->server
= server
;
3445 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_REMOVE
];
3446 nfs4_init_sequence(&args
->seq_args
, &res
->seq_res
, 1);
3448 nfs_fattr_init(res
->dir_attr
);
3451 static void nfs4_proc_unlink_rpc_prepare(struct rpc_task
*task
, struct nfs_unlinkdata
*data
)
3453 nfs4_setup_sequence(NFS_SERVER(data
->dir
),
3454 &data
->args
.seq_args
,
3459 static int nfs4_proc_unlink_done(struct rpc_task
*task
, struct inode
*dir
)
3461 struct nfs_unlinkdata
*data
= task
->tk_calldata
;
3462 struct nfs_removeres
*res
= &data
->res
;
3464 if (!nfs4_sequence_done(task
, &res
->seq_res
))
3466 if (nfs4_async_handle_error(task
, res
->server
, NULL
) == -EAGAIN
)
3468 update_changeattr(dir
, &res
->cinfo
);
3472 static void nfs4_proc_rename_setup(struct rpc_message
*msg
, struct inode
*dir
)
3474 struct nfs_server
*server
= NFS_SERVER(dir
);
3475 struct nfs_renameargs
*arg
= msg
->rpc_argp
;
3476 struct nfs_renameres
*res
= msg
->rpc_resp
;
3478 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RENAME
];
3479 res
->server
= server
;
3480 nfs4_init_sequence(&arg
->seq_args
, &res
->seq_res
, 1);
3483 static void nfs4_proc_rename_rpc_prepare(struct rpc_task
*task
, struct nfs_renamedata
*data
)
3485 nfs4_setup_sequence(NFS_SERVER(data
->old_dir
),
3486 &data
->args
.seq_args
,
3491 static int nfs4_proc_rename_done(struct rpc_task
*task
, struct inode
*old_dir
,
3492 struct inode
*new_dir
)
3494 struct nfs_renamedata
*data
= task
->tk_calldata
;
3495 struct nfs_renameres
*res
= &data
->res
;
3497 if (!nfs4_sequence_done(task
, &res
->seq_res
))
3499 if (nfs4_async_handle_error(task
, res
->server
, NULL
) == -EAGAIN
)
3502 update_changeattr(old_dir
, &res
->old_cinfo
);
3503 update_changeattr(new_dir
, &res
->new_cinfo
);
3507 static int _nfs4_proc_rename(struct inode
*old_dir
, struct qstr
*old_name
,
3508 struct inode
*new_dir
, struct qstr
*new_name
)
3510 struct nfs_server
*server
= NFS_SERVER(old_dir
);
3511 struct nfs_renameargs arg
= {
3512 .old_dir
= NFS_FH(old_dir
),
3513 .new_dir
= NFS_FH(new_dir
),
3514 .old_name
= old_name
,
3515 .new_name
= new_name
,
3517 struct nfs_renameres res
= {
3520 struct rpc_message msg
= {
3521 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RENAME
],
3525 int status
= -ENOMEM
;
3527 status
= nfs4_call_sync(server
->client
, server
, &msg
, &arg
.seq_args
, &res
.seq_res
, 1);
3529 update_changeattr(old_dir
, &res
.old_cinfo
);
3530 update_changeattr(new_dir
, &res
.new_cinfo
);
3535 static int nfs4_proc_rename(struct inode
*old_dir
, struct qstr
*old_name
,
3536 struct inode
*new_dir
, struct qstr
*new_name
)
3538 struct nfs4_exception exception
= { };
3541 err
= _nfs4_proc_rename(old_dir
, old_name
,
3543 trace_nfs4_rename(old_dir
, old_name
, new_dir
, new_name
, err
);
3544 err
= nfs4_handle_exception(NFS_SERVER(old_dir
), err
,
3546 } while (exception
.retry
);
3550 static int _nfs4_proc_link(struct inode
*inode
, struct inode
*dir
, struct qstr
*name
)
3552 struct nfs_server
*server
= NFS_SERVER(inode
);
3553 struct nfs4_link_arg arg
= {
3554 .fh
= NFS_FH(inode
),
3555 .dir_fh
= NFS_FH(dir
),
3557 .bitmask
= server
->attr_bitmask
,
3559 struct nfs4_link_res res
= {
3563 struct rpc_message msg
= {
3564 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LINK
],
3568 int status
= -ENOMEM
;
3570 res
.fattr
= nfs_alloc_fattr();
3571 if (res
.fattr
== NULL
)
3574 res
.label
= nfs4_label_alloc(server
, GFP_KERNEL
);
3575 if (IS_ERR(res
.label
)) {
3576 status
= PTR_ERR(res
.label
);
3579 arg
.bitmask
= nfs4_bitmask(server
, res
.label
);
3581 status
= nfs4_call_sync(server
->client
, server
, &msg
, &arg
.seq_args
, &res
.seq_res
, 1);
3583 update_changeattr(dir
, &res
.cinfo
);
3584 status
= nfs_post_op_update_inode(inode
, res
.fattr
);
3586 nfs_setsecurity(inode
, res
.fattr
, res
.label
);
3590 nfs4_label_free(res
.label
);
3593 nfs_free_fattr(res
.fattr
);
3597 static int nfs4_proc_link(struct inode
*inode
, struct inode
*dir
, struct qstr
*name
)
3599 struct nfs4_exception exception
= { };
3602 err
= nfs4_handle_exception(NFS_SERVER(inode
),
3603 _nfs4_proc_link(inode
, dir
, name
),
3605 } while (exception
.retry
);
3609 struct nfs4_createdata
{
3610 struct rpc_message msg
;
3611 struct nfs4_create_arg arg
;
3612 struct nfs4_create_res res
;
3614 struct nfs_fattr fattr
;
3615 struct nfs4_label
*label
;
3618 static struct nfs4_createdata
*nfs4_alloc_createdata(struct inode
*dir
,
3619 struct qstr
*name
, struct iattr
*sattr
, u32 ftype
)
3621 struct nfs4_createdata
*data
;
3623 data
= kzalloc(sizeof(*data
), GFP_KERNEL
);
3625 struct nfs_server
*server
= NFS_SERVER(dir
);
3627 data
->label
= nfs4_label_alloc(server
, GFP_KERNEL
);
3628 if (IS_ERR(data
->label
))
3631 data
->msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_CREATE
];
3632 data
->msg
.rpc_argp
= &data
->arg
;
3633 data
->msg
.rpc_resp
= &data
->res
;
3634 data
->arg
.dir_fh
= NFS_FH(dir
);
3635 data
->arg
.server
= server
;
3636 data
->arg
.name
= name
;
3637 data
->arg
.attrs
= sattr
;
3638 data
->arg
.ftype
= ftype
;
3639 data
->arg
.bitmask
= nfs4_bitmask(server
, data
->label
);
3640 data
->res
.server
= server
;
3641 data
->res
.fh
= &data
->fh
;
3642 data
->res
.fattr
= &data
->fattr
;
3643 data
->res
.label
= data
->label
;
3644 nfs_fattr_init(data
->res
.fattr
);
3652 static int nfs4_do_create(struct inode
*dir
, struct dentry
*dentry
, struct nfs4_createdata
*data
)
3654 int status
= nfs4_call_sync(NFS_SERVER(dir
)->client
, NFS_SERVER(dir
), &data
->msg
,
3655 &data
->arg
.seq_args
, &data
->res
.seq_res
, 1);
3657 update_changeattr(dir
, &data
->res
.dir_cinfo
);
3658 status
= nfs_instantiate(dentry
, data
->res
.fh
, data
->res
.fattr
, data
->res
.label
);
3663 static void nfs4_free_createdata(struct nfs4_createdata
*data
)
3665 nfs4_label_free(data
->label
);
3669 static int _nfs4_proc_symlink(struct inode
*dir
, struct dentry
*dentry
,
3670 struct page
*page
, unsigned int len
, struct iattr
*sattr
,
3671 struct nfs4_label
*label
)
3673 struct nfs4_createdata
*data
;
3674 int status
= -ENAMETOOLONG
;
3676 if (len
> NFS4_MAXPATHLEN
)
3680 data
= nfs4_alloc_createdata(dir
, &dentry
->d_name
, sattr
, NF4LNK
);
3684 data
->msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SYMLINK
];
3685 data
->arg
.u
.symlink
.pages
= &page
;
3686 data
->arg
.u
.symlink
.len
= len
;
3687 data
->arg
.label
= label
;
3689 status
= nfs4_do_create(dir
, dentry
, data
);
3691 nfs4_free_createdata(data
);
3696 static int nfs4_proc_symlink(struct inode
*dir
, struct dentry
*dentry
,
3697 struct page
*page
, unsigned int len
, struct iattr
*sattr
)
3699 struct nfs4_exception exception
= { };
3700 struct nfs4_label l
, *label
= NULL
;
3703 label
= nfs4_label_init_security(dir
, dentry
, sattr
, &l
);
3706 err
= _nfs4_proc_symlink(dir
, dentry
, page
, len
, sattr
, label
);
3707 trace_nfs4_symlink(dir
, &dentry
->d_name
, err
);
3708 err
= nfs4_handle_exception(NFS_SERVER(dir
), err
,
3710 } while (exception
.retry
);
3712 nfs4_label_release_security(label
);
3716 static int _nfs4_proc_mkdir(struct inode
*dir
, struct dentry
*dentry
,
3717 struct iattr
*sattr
, struct nfs4_label
*label
)
3719 struct nfs4_createdata
*data
;
3720 int status
= -ENOMEM
;
3722 data
= nfs4_alloc_createdata(dir
, &dentry
->d_name
, sattr
, NF4DIR
);
3726 data
->arg
.label
= label
;
3727 status
= nfs4_do_create(dir
, dentry
, data
);
3729 nfs4_free_createdata(data
);
3734 static int nfs4_proc_mkdir(struct inode
*dir
, struct dentry
*dentry
,
3735 struct iattr
*sattr
)
3737 struct nfs4_exception exception
= { };
3738 struct nfs4_label l
, *label
= NULL
;
3741 label
= nfs4_label_init_security(dir
, dentry
, sattr
, &l
);
3743 sattr
->ia_mode
&= ~current_umask();
3745 err
= _nfs4_proc_mkdir(dir
, dentry
, sattr
, label
);
3746 trace_nfs4_mkdir(dir
, &dentry
->d_name
, err
);
3747 err
= nfs4_handle_exception(NFS_SERVER(dir
), err
,
3749 } while (exception
.retry
);
3750 nfs4_label_release_security(label
);
3755 static int _nfs4_proc_readdir(struct dentry
*dentry
, struct rpc_cred
*cred
,
3756 u64 cookie
, struct page
**pages
, unsigned int count
, int plus
)
3758 struct inode
*dir
= dentry
->d_inode
;
3759 struct nfs4_readdir_arg args
= {
3764 .bitmask
= NFS_SERVER(dentry
->d_inode
)->attr_bitmask
,
3767 struct nfs4_readdir_res res
;
3768 struct rpc_message msg
= {
3769 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_READDIR
],
3776 dprintk("%s: dentry = %pd2, cookie = %Lu\n", __func__
,
3778 (unsigned long long)cookie
);
3779 nfs4_setup_readdir(cookie
, NFS_I(dir
)->cookieverf
, dentry
, &args
);
3780 res
.pgbase
= args
.pgbase
;
3781 status
= nfs4_call_sync(NFS_SERVER(dir
)->client
, NFS_SERVER(dir
), &msg
, &args
.seq_args
, &res
.seq_res
, 0);
3783 memcpy(NFS_I(dir
)->cookieverf
, res
.verifier
.data
, NFS4_VERIFIER_SIZE
);
3784 status
+= args
.pgbase
;
3787 nfs_invalidate_atime(dir
);
3789 dprintk("%s: returns %d\n", __func__
, status
);
3793 static int nfs4_proc_readdir(struct dentry
*dentry
, struct rpc_cred
*cred
,
3794 u64 cookie
, struct page
**pages
, unsigned int count
, int plus
)
3796 struct nfs4_exception exception
= { };
3799 err
= _nfs4_proc_readdir(dentry
, cred
, cookie
,
3800 pages
, count
, plus
);
3801 trace_nfs4_readdir(dentry
->d_inode
, err
);
3802 err
= nfs4_handle_exception(NFS_SERVER(dentry
->d_inode
), err
,
3804 } while (exception
.retry
);
3808 static int _nfs4_proc_mknod(struct inode
*dir
, struct dentry
*dentry
,
3809 struct iattr
*sattr
, struct nfs4_label
*label
, dev_t rdev
)
3811 struct nfs4_createdata
*data
;
3812 int mode
= sattr
->ia_mode
;
3813 int status
= -ENOMEM
;
3815 data
= nfs4_alloc_createdata(dir
, &dentry
->d_name
, sattr
, NF4SOCK
);
3820 data
->arg
.ftype
= NF4FIFO
;
3821 else if (S_ISBLK(mode
)) {
3822 data
->arg
.ftype
= NF4BLK
;
3823 data
->arg
.u
.device
.specdata1
= MAJOR(rdev
);
3824 data
->arg
.u
.device
.specdata2
= MINOR(rdev
);
3826 else if (S_ISCHR(mode
)) {
3827 data
->arg
.ftype
= NF4CHR
;
3828 data
->arg
.u
.device
.specdata1
= MAJOR(rdev
);
3829 data
->arg
.u
.device
.specdata2
= MINOR(rdev
);
3830 } else if (!S_ISSOCK(mode
)) {
3835 data
->arg
.label
= label
;
3836 status
= nfs4_do_create(dir
, dentry
, data
);
3838 nfs4_free_createdata(data
);
3843 static int nfs4_proc_mknod(struct inode
*dir
, struct dentry
*dentry
,
3844 struct iattr
*sattr
, dev_t rdev
)
3846 struct nfs4_exception exception
= { };
3847 struct nfs4_label l
, *label
= NULL
;
3850 label
= nfs4_label_init_security(dir
, dentry
, sattr
, &l
);
3852 sattr
->ia_mode
&= ~current_umask();
3854 err
= _nfs4_proc_mknod(dir
, dentry
, sattr
, label
, rdev
);
3855 trace_nfs4_mknod(dir
, &dentry
->d_name
, err
);
3856 err
= nfs4_handle_exception(NFS_SERVER(dir
), err
,
3858 } while (exception
.retry
);
3860 nfs4_label_release_security(label
);
3865 static int _nfs4_proc_statfs(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
3866 struct nfs_fsstat
*fsstat
)
3868 struct nfs4_statfs_arg args
= {
3870 .bitmask
= server
->attr_bitmask
,
3872 struct nfs4_statfs_res res
= {
3875 struct rpc_message msg
= {
3876 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_STATFS
],
3881 nfs_fattr_init(fsstat
->fattr
);
3882 return nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
3885 static int nfs4_proc_statfs(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fsstat
*fsstat
)
3887 struct nfs4_exception exception
= { };
3890 err
= nfs4_handle_exception(server
,
3891 _nfs4_proc_statfs(server
, fhandle
, fsstat
),
3893 } while (exception
.retry
);
3897 static int _nfs4_do_fsinfo(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
3898 struct nfs_fsinfo
*fsinfo
)
3900 struct nfs4_fsinfo_arg args
= {
3902 .bitmask
= server
->attr_bitmask
,
3904 struct nfs4_fsinfo_res res
= {
3907 struct rpc_message msg
= {
3908 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_FSINFO
],
3913 return nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
3916 static int nfs4_do_fsinfo(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fsinfo
*fsinfo
)
3918 struct nfs4_exception exception
= { };
3919 unsigned long now
= jiffies
;
3923 err
= _nfs4_do_fsinfo(server
, fhandle
, fsinfo
);
3924 trace_nfs4_fsinfo(server
, fhandle
, fsinfo
->fattr
, err
);
3926 struct nfs_client
*clp
= server
->nfs_client
;
3928 spin_lock(&clp
->cl_lock
);
3929 clp
->cl_lease_time
= fsinfo
->lease_time
* HZ
;
3930 clp
->cl_last_renewal
= now
;
3931 spin_unlock(&clp
->cl_lock
);
3934 err
= nfs4_handle_exception(server
, err
, &exception
);
3935 } while (exception
.retry
);
3939 static int nfs4_proc_fsinfo(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fsinfo
*fsinfo
)
3943 nfs_fattr_init(fsinfo
->fattr
);
3944 error
= nfs4_do_fsinfo(server
, fhandle
, fsinfo
);
3946 /* block layout checks this! */
3947 server
->pnfs_blksize
= fsinfo
->blksize
;
3948 set_pnfs_layoutdriver(server
, fhandle
, fsinfo
->layouttype
);
3954 static int _nfs4_proc_pathconf(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
3955 struct nfs_pathconf
*pathconf
)
3957 struct nfs4_pathconf_arg args
= {
3959 .bitmask
= server
->attr_bitmask
,
3961 struct nfs4_pathconf_res res
= {
3962 .pathconf
= pathconf
,
3964 struct rpc_message msg
= {
3965 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_PATHCONF
],
3970 /* None of the pathconf attributes are mandatory to implement */
3971 if ((args
.bitmask
[0] & nfs4_pathconf_bitmap
[0]) == 0) {
3972 memset(pathconf
, 0, sizeof(*pathconf
));
3976 nfs_fattr_init(pathconf
->fattr
);
3977 return nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
3980 static int nfs4_proc_pathconf(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
3981 struct nfs_pathconf
*pathconf
)
3983 struct nfs4_exception exception
= { };
3987 err
= nfs4_handle_exception(server
,
3988 _nfs4_proc_pathconf(server
, fhandle
, pathconf
),
3990 } while (exception
.retry
);
3994 int nfs4_set_rw_stateid(nfs4_stateid
*stateid
,
3995 const struct nfs_open_context
*ctx
,
3996 const struct nfs_lock_context
*l_ctx
,
3999 const struct nfs_lockowner
*lockowner
= NULL
;
4002 lockowner
= &l_ctx
->lockowner
;
4003 return nfs4_select_rw_stateid(stateid
, ctx
->state
, fmode
, lockowner
);
4005 EXPORT_SYMBOL_GPL(nfs4_set_rw_stateid
);
4007 static bool nfs4_stateid_is_current(nfs4_stateid
*stateid
,
4008 const struct nfs_open_context
*ctx
,
4009 const struct nfs_lock_context
*l_ctx
,
4012 nfs4_stateid current_stateid
;
4014 if (nfs4_set_rw_stateid(¤t_stateid
, ctx
, l_ctx
, fmode
))
4016 return nfs4_stateid_match(stateid
, ¤t_stateid
);
4019 static bool nfs4_error_stateid_expired(int err
)
4022 case -NFS4ERR_DELEG_REVOKED
:
4023 case -NFS4ERR_ADMIN_REVOKED
:
4024 case -NFS4ERR_BAD_STATEID
:
4025 case -NFS4ERR_STALE_STATEID
:
4026 case -NFS4ERR_OLD_STATEID
:
4027 case -NFS4ERR_OPENMODE
:
4028 case -NFS4ERR_EXPIRED
:
4034 void __nfs4_read_done_cb(struct nfs_read_data
*data
)
4036 nfs_invalidate_atime(data
->header
->inode
);
4039 static int nfs4_read_done_cb(struct rpc_task
*task
, struct nfs_read_data
*data
)
4041 struct nfs_server
*server
= NFS_SERVER(data
->header
->inode
);
4043 trace_nfs4_read(data
, task
->tk_status
);
4044 if (nfs4_async_handle_error(task
, server
, data
->args
.context
->state
) == -EAGAIN
) {
4045 rpc_restart_call_prepare(task
);
4049 __nfs4_read_done_cb(data
);
4050 if (task
->tk_status
> 0)
4051 renew_lease(server
, data
->timestamp
);
4055 static bool nfs4_read_stateid_changed(struct rpc_task
*task
,
4056 struct nfs_readargs
*args
)
4059 if (!nfs4_error_stateid_expired(task
->tk_status
) ||
4060 nfs4_stateid_is_current(&args
->stateid
,
4065 rpc_restart_call_prepare(task
);
4069 static int nfs4_read_done(struct rpc_task
*task
, struct nfs_read_data
*data
)
4072 dprintk("--> %s\n", __func__
);
4074 if (!nfs4_sequence_done(task
, &data
->res
.seq_res
))
4076 if (nfs4_read_stateid_changed(task
, &data
->args
))
4078 return data
->read_done_cb
? data
->read_done_cb(task
, data
) :
4079 nfs4_read_done_cb(task
, data
);
4082 static void nfs4_proc_read_setup(struct nfs_read_data
*data
, struct rpc_message
*msg
)
4084 data
->timestamp
= jiffies
;
4085 data
->read_done_cb
= nfs4_read_done_cb
;
4086 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_READ
];
4087 nfs4_init_sequence(&data
->args
.seq_args
, &data
->res
.seq_res
, 0);
4090 static int nfs4_proc_read_rpc_prepare(struct rpc_task
*task
, struct nfs_read_data
*data
)
4092 if (nfs4_setup_sequence(NFS_SERVER(data
->header
->inode
),
4093 &data
->args
.seq_args
,
4097 if (nfs4_set_rw_stateid(&data
->args
.stateid
, data
->args
.context
,
4098 data
->args
.lock_context
, FMODE_READ
) == -EIO
)
4100 if (unlikely(test_bit(NFS_CONTEXT_BAD
, &data
->args
.context
->flags
)))
4105 static int nfs4_write_done_cb(struct rpc_task
*task
, struct nfs_write_data
*data
)
4107 struct inode
*inode
= data
->header
->inode
;
4109 trace_nfs4_write(data
, task
->tk_status
);
4110 if (nfs4_async_handle_error(task
, NFS_SERVER(inode
), data
->args
.context
->state
) == -EAGAIN
) {
4111 rpc_restart_call_prepare(task
);
4114 if (task
->tk_status
>= 0) {
4115 renew_lease(NFS_SERVER(inode
), data
->timestamp
);
4116 nfs_post_op_update_inode_force_wcc(inode
, &data
->fattr
);
4121 static bool nfs4_write_stateid_changed(struct rpc_task
*task
,
4122 struct nfs_writeargs
*args
)
4125 if (!nfs4_error_stateid_expired(task
->tk_status
) ||
4126 nfs4_stateid_is_current(&args
->stateid
,
4131 rpc_restart_call_prepare(task
);
4135 static int nfs4_write_done(struct rpc_task
*task
, struct nfs_write_data
*data
)
4137 if (!nfs4_sequence_done(task
, &data
->res
.seq_res
))
4139 if (nfs4_write_stateid_changed(task
, &data
->args
))
4141 return data
->write_done_cb
? data
->write_done_cb(task
, data
) :
4142 nfs4_write_done_cb(task
, data
);
4146 bool nfs4_write_need_cache_consistency_data(const struct nfs_write_data
*data
)
4148 const struct nfs_pgio_header
*hdr
= data
->header
;
4150 /* Don't request attributes for pNFS or O_DIRECT writes */
4151 if (data
->ds_clp
!= NULL
|| hdr
->dreq
!= NULL
)
4153 /* Otherwise, request attributes if and only if we don't hold
4156 return nfs4_have_delegation(hdr
->inode
, FMODE_READ
) == 0;
4159 static void nfs4_proc_write_setup(struct nfs_write_data
*data
, struct rpc_message
*msg
)
4161 struct nfs_server
*server
= NFS_SERVER(data
->header
->inode
);
4163 if (!nfs4_write_need_cache_consistency_data(data
)) {
4164 data
->args
.bitmask
= NULL
;
4165 data
->res
.fattr
= NULL
;
4167 data
->args
.bitmask
= server
->cache_consistency_bitmask
;
4169 if (!data
->write_done_cb
)
4170 data
->write_done_cb
= nfs4_write_done_cb
;
4171 data
->res
.server
= server
;
4172 data
->timestamp
= jiffies
;
4174 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_WRITE
];
4175 nfs4_init_sequence(&data
->args
.seq_args
, &data
->res
.seq_res
, 1);
4178 static int nfs4_proc_write_rpc_prepare(struct rpc_task
*task
, struct nfs_write_data
*data
)
4180 if (nfs4_setup_sequence(NFS_SERVER(data
->header
->inode
),
4181 &data
->args
.seq_args
,
4185 if (nfs4_set_rw_stateid(&data
->args
.stateid
, data
->args
.context
,
4186 data
->args
.lock_context
, FMODE_WRITE
) == -EIO
)
4188 if (unlikely(test_bit(NFS_CONTEXT_BAD
, &data
->args
.context
->flags
)))
4193 static void nfs4_proc_commit_rpc_prepare(struct rpc_task
*task
, struct nfs_commit_data
*data
)
4195 nfs4_setup_sequence(NFS_SERVER(data
->inode
),
4196 &data
->args
.seq_args
,
4201 static int nfs4_commit_done_cb(struct rpc_task
*task
, struct nfs_commit_data
*data
)
4203 struct inode
*inode
= data
->inode
;
4205 trace_nfs4_commit(data
, task
->tk_status
);
4206 if (nfs4_async_handle_error(task
, NFS_SERVER(inode
), NULL
) == -EAGAIN
) {
4207 rpc_restart_call_prepare(task
);
4213 static int nfs4_commit_done(struct rpc_task
*task
, struct nfs_commit_data
*data
)
4215 if (!nfs4_sequence_done(task
, &data
->res
.seq_res
))
4217 return data
->commit_done_cb(task
, data
);
4220 static void nfs4_proc_commit_setup(struct nfs_commit_data
*data
, struct rpc_message
*msg
)
4222 struct nfs_server
*server
= NFS_SERVER(data
->inode
);
4224 if (data
->commit_done_cb
== NULL
)
4225 data
->commit_done_cb
= nfs4_commit_done_cb
;
4226 data
->res
.server
= server
;
4227 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_COMMIT
];
4228 nfs4_init_sequence(&data
->args
.seq_args
, &data
->res
.seq_res
, 1);
4231 struct nfs4_renewdata
{
4232 struct nfs_client
*client
;
4233 unsigned long timestamp
;
4237 * nfs4_proc_async_renew(): This is not one of the nfs_rpc_ops; it is a special
4238 * standalone procedure for queueing an asynchronous RENEW.
4240 static void nfs4_renew_release(void *calldata
)
4242 struct nfs4_renewdata
*data
= calldata
;
4243 struct nfs_client
*clp
= data
->client
;
4245 if (atomic_read(&clp
->cl_count
) > 1)
4246 nfs4_schedule_state_renewal(clp
);
4247 nfs_put_client(clp
);
4251 static void nfs4_renew_done(struct rpc_task
*task
, void *calldata
)
4253 struct nfs4_renewdata
*data
= calldata
;
4254 struct nfs_client
*clp
= data
->client
;
4255 unsigned long timestamp
= data
->timestamp
;
4257 trace_nfs4_renew_async(clp
, task
->tk_status
);
4258 switch (task
->tk_status
) {
4261 case -NFS4ERR_LEASE_MOVED
:
4262 nfs4_schedule_lease_moved_recovery(clp
);
4265 /* Unless we're shutting down, schedule state recovery! */
4266 if (test_bit(NFS_CS_RENEWD
, &clp
->cl_res_state
) == 0)
4268 if (task
->tk_status
!= NFS4ERR_CB_PATH_DOWN
) {
4269 nfs4_schedule_lease_recovery(clp
);
4272 nfs4_schedule_path_down_recovery(clp
);
4274 do_renew_lease(clp
, timestamp
);
4277 static const struct rpc_call_ops nfs4_renew_ops
= {
4278 .rpc_call_done
= nfs4_renew_done
,
4279 .rpc_release
= nfs4_renew_release
,
4282 static int nfs4_proc_async_renew(struct nfs_client
*clp
, struct rpc_cred
*cred
, unsigned renew_flags
)
4284 struct rpc_message msg
= {
4285 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RENEW
],
4289 struct nfs4_renewdata
*data
;
4291 if (renew_flags
== 0)
4293 if (!atomic_inc_not_zero(&clp
->cl_count
))
4295 data
= kmalloc(sizeof(*data
), GFP_NOFS
);
4299 data
->timestamp
= jiffies
;
4300 return rpc_call_async(clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
,
4301 &nfs4_renew_ops
, data
);
4304 static int nfs4_proc_renew(struct nfs_client
*clp
, struct rpc_cred
*cred
)
4306 struct rpc_message msg
= {
4307 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RENEW
],
4311 unsigned long now
= jiffies
;
4314 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
4317 do_renew_lease(clp
, now
);
4321 static inline int nfs4_server_supports_acls(struct nfs_server
*server
)
4323 return server
->caps
& NFS_CAP_ACLS
;
4326 /* Assuming that XATTR_SIZE_MAX is a multiple of PAGE_SIZE, and that
4327 * it's OK to put sizeof(void) * (XATTR_SIZE_MAX/PAGE_SIZE) bytes on
4330 #define NFS4ACL_MAXPAGES DIV_ROUND_UP(XATTR_SIZE_MAX, PAGE_SIZE)
4332 static int buf_to_pages_noslab(const void *buf
, size_t buflen
,
4333 struct page
**pages
, unsigned int *pgbase
)
4335 struct page
*newpage
, **spages
;
4341 len
= min_t(size_t, PAGE_SIZE
, buflen
);
4342 newpage
= alloc_page(GFP_KERNEL
);
4344 if (newpage
== NULL
)
4346 memcpy(page_address(newpage
), buf
, len
);
4351 } while (buflen
!= 0);
4357 __free_page(spages
[rc
-1]);
4361 struct nfs4_cached_acl
{
4367 static void nfs4_set_cached_acl(struct inode
*inode
, struct nfs4_cached_acl
*acl
)
4369 struct nfs_inode
*nfsi
= NFS_I(inode
);
4371 spin_lock(&inode
->i_lock
);
4372 kfree(nfsi
->nfs4_acl
);
4373 nfsi
->nfs4_acl
= acl
;
4374 spin_unlock(&inode
->i_lock
);
4377 static void nfs4_zap_acl_attr(struct inode
*inode
)
4379 nfs4_set_cached_acl(inode
, NULL
);
4382 static inline ssize_t
nfs4_read_cached_acl(struct inode
*inode
, char *buf
, size_t buflen
)
4384 struct nfs_inode
*nfsi
= NFS_I(inode
);
4385 struct nfs4_cached_acl
*acl
;
4388 spin_lock(&inode
->i_lock
);
4389 acl
= nfsi
->nfs4_acl
;
4392 if (buf
== NULL
) /* user is just asking for length */
4394 if (acl
->cached
== 0)
4396 ret
= -ERANGE
; /* see getxattr(2) man page */
4397 if (acl
->len
> buflen
)
4399 memcpy(buf
, acl
->data
, acl
->len
);
4403 spin_unlock(&inode
->i_lock
);
4407 static void nfs4_write_cached_acl(struct inode
*inode
, struct page
**pages
, size_t pgbase
, size_t acl_len
)
4409 struct nfs4_cached_acl
*acl
;
4410 size_t buflen
= sizeof(*acl
) + acl_len
;
4412 if (buflen
<= PAGE_SIZE
) {
4413 acl
= kmalloc(buflen
, GFP_KERNEL
);
4417 _copy_from_pages(acl
->data
, pages
, pgbase
, acl_len
);
4419 acl
= kmalloc(sizeof(*acl
), GFP_KERNEL
);
4426 nfs4_set_cached_acl(inode
, acl
);
4430 * The getxattr API returns the required buffer length when called with a
4431 * NULL buf. The NFSv4 acl tool then calls getxattr again after allocating
4432 * the required buf. On a NULL buf, we send a page of data to the server
4433 * guessing that the ACL request can be serviced by a page. If so, we cache
4434 * up to the page of ACL data, and the 2nd call to getxattr is serviced by
4435 * the cache. If not so, we throw away the page, and cache the required
4436 * length. The next getxattr call will then produce another round trip to
4437 * the server, this time with the input buf of the required size.
4439 static ssize_t
__nfs4_get_acl_uncached(struct inode
*inode
, void *buf
, size_t buflen
)
4441 struct page
*pages
[NFS4ACL_MAXPAGES
] = {NULL
, };
4442 struct nfs_getaclargs args
= {
4443 .fh
= NFS_FH(inode
),
4447 struct nfs_getaclres res
= {
4450 struct rpc_message msg
= {
4451 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GETACL
],
4455 unsigned int npages
= DIV_ROUND_UP(buflen
, PAGE_SIZE
);
4456 int ret
= -ENOMEM
, i
;
4458 /* As long as we're doing a round trip to the server anyway,
4459 * let's be prepared for a page of acl data. */
4462 if (npages
> ARRAY_SIZE(pages
))
4465 for (i
= 0; i
< npages
; i
++) {
4466 pages
[i
] = alloc_page(GFP_KERNEL
);
4471 /* for decoding across pages */
4472 res
.acl_scratch
= alloc_page(GFP_KERNEL
);
4473 if (!res
.acl_scratch
)
4476 args
.acl_len
= npages
* PAGE_SIZE
;
4477 args
.acl_pgbase
= 0;
4479 dprintk("%s buf %p buflen %zu npages %d args.acl_len %zu\n",
4480 __func__
, buf
, buflen
, npages
, args
.acl_len
);
4481 ret
= nfs4_call_sync(NFS_SERVER(inode
)->client
, NFS_SERVER(inode
),
4482 &msg
, &args
.seq_args
, &res
.seq_res
, 0);
4486 /* Handle the case where the passed-in buffer is too short */
4487 if (res
.acl_flags
& NFS4_ACL_TRUNC
) {
4488 /* Did the user only issue a request for the acl length? */
4494 nfs4_write_cached_acl(inode
, pages
, res
.acl_data_offset
, res
.acl_len
);
4496 if (res
.acl_len
> buflen
) {
4500 _copy_from_pages(buf
, pages
, res
.acl_data_offset
, res
.acl_len
);
4505 for (i
= 0; i
< npages
; i
++)
4507 __free_page(pages
[i
]);
4508 if (res
.acl_scratch
)
4509 __free_page(res
.acl_scratch
);
4513 static ssize_t
nfs4_get_acl_uncached(struct inode
*inode
, void *buf
, size_t buflen
)
4515 struct nfs4_exception exception
= { };
4518 ret
= __nfs4_get_acl_uncached(inode
, buf
, buflen
);
4519 trace_nfs4_get_acl(inode
, ret
);
4522 ret
= nfs4_handle_exception(NFS_SERVER(inode
), ret
, &exception
);
4523 } while (exception
.retry
);
4527 static ssize_t
nfs4_proc_get_acl(struct inode
*inode
, void *buf
, size_t buflen
)
4529 struct nfs_server
*server
= NFS_SERVER(inode
);
4532 if (!nfs4_server_supports_acls(server
))
4534 ret
= nfs_revalidate_inode(server
, inode
);
4537 if (NFS_I(inode
)->cache_validity
& NFS_INO_INVALID_ACL
)
4538 nfs_zap_acl_cache(inode
);
4539 ret
= nfs4_read_cached_acl(inode
, buf
, buflen
);
4541 /* -ENOENT is returned if there is no ACL or if there is an ACL
4542 * but no cached acl data, just the acl length */
4544 return nfs4_get_acl_uncached(inode
, buf
, buflen
);
4547 static int __nfs4_proc_set_acl(struct inode
*inode
, const void *buf
, size_t buflen
)
4549 struct nfs_server
*server
= NFS_SERVER(inode
);
4550 struct page
*pages
[NFS4ACL_MAXPAGES
];
4551 struct nfs_setaclargs arg
= {
4552 .fh
= NFS_FH(inode
),
4556 struct nfs_setaclres res
;
4557 struct rpc_message msg
= {
4558 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETACL
],
4562 unsigned int npages
= DIV_ROUND_UP(buflen
, PAGE_SIZE
);
4565 if (!nfs4_server_supports_acls(server
))
4567 if (npages
> ARRAY_SIZE(pages
))
4569 i
= buf_to_pages_noslab(buf
, buflen
, arg
.acl_pages
, &arg
.acl_pgbase
);
4572 nfs4_inode_return_delegation(inode
);
4573 ret
= nfs4_call_sync(server
->client
, server
, &msg
, &arg
.seq_args
, &res
.seq_res
, 1);
4576 * Free each page after tx, so the only ref left is
4577 * held by the network stack
4580 put_page(pages
[i
-1]);
4583 * Acl update can result in inode attribute update.
4584 * so mark the attribute cache invalid.
4586 spin_lock(&inode
->i_lock
);
4587 NFS_I(inode
)->cache_validity
|= NFS_INO_INVALID_ATTR
;
4588 spin_unlock(&inode
->i_lock
);
4589 nfs_access_zap_cache(inode
);
4590 nfs_zap_acl_cache(inode
);
4594 static int nfs4_proc_set_acl(struct inode
*inode
, const void *buf
, size_t buflen
)
4596 struct nfs4_exception exception
= { };
4599 err
= __nfs4_proc_set_acl(inode
, buf
, buflen
);
4600 trace_nfs4_set_acl(inode
, err
);
4601 err
= nfs4_handle_exception(NFS_SERVER(inode
), err
,
4603 } while (exception
.retry
);
4607 #ifdef CONFIG_NFS_V4_SECURITY_LABEL
4608 static int _nfs4_get_security_label(struct inode
*inode
, void *buf
,
4611 struct nfs_server
*server
= NFS_SERVER(inode
);
4612 struct nfs_fattr fattr
;
4613 struct nfs4_label label
= {0, 0, buflen
, buf
};
4615 u32 bitmask
[3] = { 0, 0, FATTR4_WORD2_SECURITY_LABEL
};
4616 struct nfs4_getattr_arg arg
= {
4617 .fh
= NFS_FH(inode
),
4620 struct nfs4_getattr_res res
= {
4625 struct rpc_message msg
= {
4626 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GETATTR
],
4632 nfs_fattr_init(&fattr
);
4634 ret
= nfs4_call_sync(server
->client
, server
, &msg
, &arg
.seq_args
, &res
.seq_res
, 0);
4637 if (!(fattr
.valid
& NFS_ATTR_FATTR_V4_SECURITY_LABEL
))
4639 if (buflen
< label
.len
)
4644 static int nfs4_get_security_label(struct inode
*inode
, void *buf
,
4647 struct nfs4_exception exception
= { };
4650 if (!nfs_server_capable(inode
, NFS_CAP_SECURITY_LABEL
))
4654 err
= _nfs4_get_security_label(inode
, buf
, buflen
);
4655 trace_nfs4_get_security_label(inode
, err
);
4656 err
= nfs4_handle_exception(NFS_SERVER(inode
), err
,
4658 } while (exception
.retry
);
4662 static int _nfs4_do_set_security_label(struct inode
*inode
,
4663 struct nfs4_label
*ilabel
,
4664 struct nfs_fattr
*fattr
,
4665 struct nfs4_label
*olabel
)
4668 struct iattr sattr
= {0};
4669 struct nfs_server
*server
= NFS_SERVER(inode
);
4670 const u32 bitmask
[3] = { 0, 0, FATTR4_WORD2_SECURITY_LABEL
};
4671 struct nfs_setattrargs arg
= {
4672 .fh
= NFS_FH(inode
),
4678 struct nfs_setattrres res
= {
4683 struct rpc_message msg
= {
4684 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETATTR
],
4690 nfs4_stateid_copy(&arg
.stateid
, &zero_stateid
);
4692 status
= nfs4_call_sync(server
->client
, server
, &msg
, &arg
.seq_args
, &res
.seq_res
, 1);
4694 dprintk("%s failed: %d\n", __func__
, status
);
4699 static int nfs4_do_set_security_label(struct inode
*inode
,
4700 struct nfs4_label
*ilabel
,
4701 struct nfs_fattr
*fattr
,
4702 struct nfs4_label
*olabel
)
4704 struct nfs4_exception exception
= { };
4708 err
= _nfs4_do_set_security_label(inode
, ilabel
,
4710 trace_nfs4_set_security_label(inode
, err
);
4711 err
= nfs4_handle_exception(NFS_SERVER(inode
), err
,
4713 } while (exception
.retry
);
4718 nfs4_set_security_label(struct dentry
*dentry
, const void *buf
, size_t buflen
)
4720 struct nfs4_label ilabel
, *olabel
= NULL
;
4721 struct nfs_fattr fattr
;
4722 struct rpc_cred
*cred
;
4723 struct inode
*inode
= dentry
->d_inode
;
4726 if (!nfs_server_capable(inode
, NFS_CAP_SECURITY_LABEL
))
4729 nfs_fattr_init(&fattr
);
4733 ilabel
.label
= (char *)buf
;
4734 ilabel
.len
= buflen
;
4736 cred
= rpc_lookup_cred();
4738 return PTR_ERR(cred
);
4740 olabel
= nfs4_label_alloc(NFS_SERVER(inode
), GFP_KERNEL
);
4741 if (IS_ERR(olabel
)) {
4742 status
= -PTR_ERR(olabel
);
4746 status
= nfs4_do_set_security_label(inode
, &ilabel
, &fattr
, olabel
);
4748 nfs_setsecurity(inode
, &fattr
, olabel
);
4750 nfs4_label_free(olabel
);
4755 #endif /* CONFIG_NFS_V4_SECURITY_LABEL */
4759 nfs4_async_handle_error(struct rpc_task
*task
, const struct nfs_server
*server
, struct nfs4_state
*state
)
4761 struct nfs_client
*clp
= server
->nfs_client
;
4763 if (task
->tk_status
>= 0)
4765 switch(task
->tk_status
) {
4766 case -NFS4ERR_DELEG_REVOKED
:
4767 case -NFS4ERR_ADMIN_REVOKED
:
4768 case -NFS4ERR_BAD_STATEID
:
4771 nfs_remove_bad_delegation(state
->inode
);
4772 case -NFS4ERR_OPENMODE
:
4775 if (nfs4_schedule_stateid_recovery(server
, state
) < 0)
4776 goto recovery_failed
;
4777 goto wait_on_recovery
;
4778 case -NFS4ERR_EXPIRED
:
4779 if (state
!= NULL
) {
4780 if (nfs4_schedule_stateid_recovery(server
, state
) < 0)
4781 goto recovery_failed
;
4783 case -NFS4ERR_STALE_STATEID
:
4784 case -NFS4ERR_STALE_CLIENTID
:
4785 nfs4_schedule_lease_recovery(clp
);
4786 goto wait_on_recovery
;
4787 case -NFS4ERR_MOVED
:
4788 if (nfs4_schedule_migration_recovery(server
) < 0)
4789 goto recovery_failed
;
4790 goto wait_on_recovery
;
4791 case -NFS4ERR_LEASE_MOVED
:
4792 nfs4_schedule_lease_moved_recovery(clp
);
4793 goto wait_on_recovery
;
4794 #if defined(CONFIG_NFS_V4_1)
4795 case -NFS4ERR_BADSESSION
:
4796 case -NFS4ERR_BADSLOT
:
4797 case -NFS4ERR_BAD_HIGH_SLOT
:
4798 case -NFS4ERR_DEADSESSION
:
4799 case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION
:
4800 case -NFS4ERR_SEQ_FALSE_RETRY
:
4801 case -NFS4ERR_SEQ_MISORDERED
:
4802 dprintk("%s ERROR %d, Reset session\n", __func__
,
4804 nfs4_schedule_session_recovery(clp
->cl_session
, task
->tk_status
);
4805 goto wait_on_recovery
;
4806 #endif /* CONFIG_NFS_V4_1 */
4807 case -NFS4ERR_DELAY
:
4808 nfs_inc_server_stats(server
, NFSIOS_DELAY
);
4809 case -NFS4ERR_GRACE
:
4810 rpc_delay(task
, NFS4_POLL_RETRY_MAX
);
4811 case -NFS4ERR_RETRY_UNCACHED_REP
:
4812 case -NFS4ERR_OLD_STATEID
:
4815 task
->tk_status
= nfs4_map_errors(task
->tk_status
);
4818 task
->tk_status
= -EIO
;
4821 rpc_sleep_on(&clp
->cl_rpcwaitq
, task
, NULL
);
4822 if (test_bit(NFS4CLNT_MANAGER_RUNNING
, &clp
->cl_state
) == 0)
4823 rpc_wake_up_queued_task(&clp
->cl_rpcwaitq
, task
);
4824 if (test_bit(NFS_MIG_FAILED
, &server
->mig_status
))
4825 goto recovery_failed
;
4827 task
->tk_status
= 0;
4831 static void nfs4_init_boot_verifier(const struct nfs_client
*clp
,
4832 nfs4_verifier
*bootverf
)
4836 if (test_bit(NFS4CLNT_PURGE_STATE
, &clp
->cl_state
)) {
4837 /* An impossible timestamp guarantees this value
4838 * will never match a generated boot time. */
4840 verf
[1] = cpu_to_be32(NSEC_PER_SEC
+ 1);
4842 struct nfs_net
*nn
= net_generic(clp
->cl_net
, nfs_net_id
);
4843 verf
[0] = cpu_to_be32(nn
->boot_time
.tv_sec
);
4844 verf
[1] = cpu_to_be32(nn
->boot_time
.tv_nsec
);
4846 memcpy(bootverf
->data
, verf
, sizeof(bootverf
->data
));
4850 nfs4_init_nonuniform_client_string(const struct nfs_client
*clp
,
4851 char *buf
, size_t len
)
4853 unsigned int result
;
4856 result
= scnprintf(buf
, len
, "Linux NFSv4.0 %s/%s %s",
4858 rpc_peeraddr2str(clp
->cl_rpcclient
,
4860 rpc_peeraddr2str(clp
->cl_rpcclient
,
4861 RPC_DISPLAY_PROTO
));
4867 nfs4_init_uniform_client_string(const struct nfs_client
*clp
,
4868 char *buf
, size_t len
)
4870 const char *nodename
= clp
->cl_rpcclient
->cl_nodename
;
4872 if (nfs4_client_id_uniquifier
[0] != '\0')
4873 return scnprintf(buf
, len
, "Linux NFSv%u.%u %s/%s",
4874 clp
->rpc_ops
->version
,
4875 clp
->cl_minorversion
,
4876 nfs4_client_id_uniquifier
,
4878 return scnprintf(buf
, len
, "Linux NFSv%u.%u %s",
4879 clp
->rpc_ops
->version
, clp
->cl_minorversion
,
4884 * nfs4_proc_setclientid - Negotiate client ID
4885 * @clp: state data structure
4886 * @program: RPC program for NFSv4 callback service
4887 * @port: IP port number for NFS4 callback service
4888 * @cred: RPC credential to use for this call
4889 * @res: where to place the result
4891 * Returns zero, a negative errno, or a negative NFS4ERR status code.
4893 int nfs4_proc_setclientid(struct nfs_client
*clp
, u32 program
,
4894 unsigned short port
, struct rpc_cred
*cred
,
4895 struct nfs4_setclientid_res
*res
)
4897 nfs4_verifier sc_verifier
;
4898 struct nfs4_setclientid setclientid
= {
4899 .sc_verifier
= &sc_verifier
,
4901 .sc_cb_ident
= clp
->cl_cb_ident
,
4903 struct rpc_message msg
= {
4904 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETCLIENTID
],
4905 .rpc_argp
= &setclientid
,
4911 /* nfs_client_id4 */
4912 nfs4_init_boot_verifier(clp
, &sc_verifier
);
4913 if (test_bit(NFS_CS_MIGRATION
, &clp
->cl_flags
))
4914 setclientid
.sc_name_len
=
4915 nfs4_init_uniform_client_string(clp
,
4916 setclientid
.sc_name
,
4917 sizeof(setclientid
.sc_name
));
4919 setclientid
.sc_name_len
=
4920 nfs4_init_nonuniform_client_string(clp
,
4921 setclientid
.sc_name
,
4922 sizeof(setclientid
.sc_name
));
4925 setclientid
.sc_netid_len
= scnprintf(setclientid
.sc_netid
,
4926 sizeof(setclientid
.sc_netid
), "%s",
4927 rpc_peeraddr2str(clp
->cl_rpcclient
,
4928 RPC_DISPLAY_NETID
));
4930 setclientid
.sc_uaddr_len
= scnprintf(setclientid
.sc_uaddr
,
4931 sizeof(setclientid
.sc_uaddr
), "%s.%u.%u",
4932 clp
->cl_ipaddr
, port
>> 8, port
& 255);
4934 dprintk("NFS call setclientid auth=%s, '%.*s'\n",
4935 clp
->cl_rpcclient
->cl_auth
->au_ops
->au_name
,
4936 setclientid
.sc_name_len
, setclientid
.sc_name
);
4937 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
4938 trace_nfs4_setclientid(clp
, status
);
4939 dprintk("NFS reply setclientid: %d\n", status
);
4944 * nfs4_proc_setclientid_confirm - Confirm client ID
4945 * @clp: state data structure
4946 * @res: result of a previous SETCLIENTID
4947 * @cred: RPC credential to use for this call
4949 * Returns zero, a negative errno, or a negative NFS4ERR status code.
4951 int nfs4_proc_setclientid_confirm(struct nfs_client
*clp
,
4952 struct nfs4_setclientid_res
*arg
,
4953 struct rpc_cred
*cred
)
4955 struct rpc_message msg
= {
4956 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETCLIENTID_CONFIRM
],
4962 dprintk("NFS call setclientid_confirm auth=%s, (client ID %llx)\n",
4963 clp
->cl_rpcclient
->cl_auth
->au_ops
->au_name
,
4965 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
4966 trace_nfs4_setclientid_confirm(clp
, status
);
4967 dprintk("NFS reply setclientid_confirm: %d\n", status
);
4971 struct nfs4_delegreturndata
{
4972 struct nfs4_delegreturnargs args
;
4973 struct nfs4_delegreturnres res
;
4975 nfs4_stateid stateid
;
4976 unsigned long timestamp
;
4977 struct nfs_fattr fattr
;
4981 static void nfs4_delegreturn_done(struct rpc_task
*task
, void *calldata
)
4983 struct nfs4_delegreturndata
*data
= calldata
;
4985 if (!nfs4_sequence_done(task
, &data
->res
.seq_res
))
4988 trace_nfs4_delegreturn_exit(&data
->args
, &data
->res
, task
->tk_status
);
4989 switch (task
->tk_status
) {
4991 renew_lease(data
->res
.server
, data
->timestamp
);
4993 case -NFS4ERR_ADMIN_REVOKED
:
4994 case -NFS4ERR_DELEG_REVOKED
:
4995 case -NFS4ERR_BAD_STATEID
:
4996 case -NFS4ERR_OLD_STATEID
:
4997 case -NFS4ERR_STALE_STATEID
:
4998 case -NFS4ERR_EXPIRED
:
4999 task
->tk_status
= 0;
5002 if (nfs4_async_handle_error(task
, data
->res
.server
, NULL
) ==
5004 rpc_restart_call_prepare(task
);
5008 data
->rpc_status
= task
->tk_status
;
5011 static void nfs4_delegreturn_release(void *calldata
)
5016 static void nfs4_delegreturn_prepare(struct rpc_task
*task
, void *data
)
5018 struct nfs4_delegreturndata
*d_data
;
5020 d_data
= (struct nfs4_delegreturndata
*)data
;
5022 nfs4_setup_sequence(d_data
->res
.server
,
5023 &d_data
->args
.seq_args
,
5024 &d_data
->res
.seq_res
,
5028 static const struct rpc_call_ops nfs4_delegreturn_ops
= {
5029 .rpc_call_prepare
= nfs4_delegreturn_prepare
,
5030 .rpc_call_done
= nfs4_delegreturn_done
,
5031 .rpc_release
= nfs4_delegreturn_release
,
5034 static int _nfs4_proc_delegreturn(struct inode
*inode
, struct rpc_cred
*cred
, const nfs4_stateid
*stateid
, int issync
)
5036 struct nfs4_delegreturndata
*data
;
5037 struct nfs_server
*server
= NFS_SERVER(inode
);
5038 struct rpc_task
*task
;
5039 struct rpc_message msg
= {
5040 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_DELEGRETURN
],
5043 struct rpc_task_setup task_setup_data
= {
5044 .rpc_client
= server
->client
,
5045 .rpc_message
= &msg
,
5046 .callback_ops
= &nfs4_delegreturn_ops
,
5047 .flags
= RPC_TASK_ASYNC
,
5051 data
= kzalloc(sizeof(*data
), GFP_NOFS
);
5054 nfs4_init_sequence(&data
->args
.seq_args
, &data
->res
.seq_res
, 1);
5055 data
->args
.fhandle
= &data
->fh
;
5056 data
->args
.stateid
= &data
->stateid
;
5057 data
->args
.bitmask
= server
->cache_consistency_bitmask
;
5058 nfs_copy_fh(&data
->fh
, NFS_FH(inode
));
5059 nfs4_stateid_copy(&data
->stateid
, stateid
);
5060 data
->res
.fattr
= &data
->fattr
;
5061 data
->res
.server
= server
;
5062 nfs_fattr_init(data
->res
.fattr
);
5063 data
->timestamp
= jiffies
;
5064 data
->rpc_status
= 0;
5066 task_setup_data
.callback_data
= data
;
5067 msg
.rpc_argp
= &data
->args
;
5068 msg
.rpc_resp
= &data
->res
;
5069 task
= rpc_run_task(&task_setup_data
);
5071 return PTR_ERR(task
);
5074 status
= nfs4_wait_for_completion_rpc_task(task
);
5077 status
= data
->rpc_status
;
5079 nfs_post_op_update_inode_force_wcc(inode
, &data
->fattr
);
5081 nfs_refresh_inode(inode
, &data
->fattr
);
5087 int nfs4_proc_delegreturn(struct inode
*inode
, struct rpc_cred
*cred
, const nfs4_stateid
*stateid
, int issync
)
5089 struct nfs_server
*server
= NFS_SERVER(inode
);
5090 struct nfs4_exception exception
= { };
5093 err
= _nfs4_proc_delegreturn(inode
, cred
, stateid
, issync
);
5094 trace_nfs4_delegreturn(inode
, err
);
5096 case -NFS4ERR_STALE_STATEID
:
5097 case -NFS4ERR_EXPIRED
:
5101 err
= nfs4_handle_exception(server
, err
, &exception
);
5102 } while (exception
.retry
);
5106 #define NFS4_LOCK_MINTIMEOUT (1 * HZ)
5107 #define NFS4_LOCK_MAXTIMEOUT (30 * HZ)
5110 * sleep, with exponential backoff, and retry the LOCK operation.
5112 static unsigned long
5113 nfs4_set_lock_task_retry(unsigned long timeout
)
5115 freezable_schedule_timeout_killable_unsafe(timeout
);
5117 if (timeout
> NFS4_LOCK_MAXTIMEOUT
)
5118 return NFS4_LOCK_MAXTIMEOUT
;
5122 static int _nfs4_proc_getlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
5124 struct inode
*inode
= state
->inode
;
5125 struct nfs_server
*server
= NFS_SERVER(inode
);
5126 struct nfs_client
*clp
= server
->nfs_client
;
5127 struct nfs_lockt_args arg
= {
5128 .fh
= NFS_FH(inode
),
5131 struct nfs_lockt_res res
= {
5134 struct rpc_message msg
= {
5135 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOCKT
],
5138 .rpc_cred
= state
->owner
->so_cred
,
5140 struct nfs4_lock_state
*lsp
;
5143 arg
.lock_owner
.clientid
= clp
->cl_clientid
;
5144 status
= nfs4_set_lock_state(state
, request
);
5147 lsp
= request
->fl_u
.nfs4_fl
.owner
;
5148 arg
.lock_owner
.id
= lsp
->ls_seqid
.owner_id
;
5149 arg
.lock_owner
.s_dev
= server
->s_dev
;
5150 status
= nfs4_call_sync(server
->client
, server
, &msg
, &arg
.seq_args
, &res
.seq_res
, 1);
5153 request
->fl_type
= F_UNLCK
;
5155 case -NFS4ERR_DENIED
:
5158 request
->fl_ops
->fl_release_private(request
);
5159 request
->fl_ops
= NULL
;
5164 static int nfs4_proc_getlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
5166 struct nfs4_exception exception
= { };
5170 err
= _nfs4_proc_getlk(state
, cmd
, request
);
5171 trace_nfs4_get_lock(request
, state
, cmd
, err
);
5172 err
= nfs4_handle_exception(NFS_SERVER(state
->inode
), err
,
5174 } while (exception
.retry
);
5178 static int do_vfs_lock(struct file
*file
, struct file_lock
*fl
)
5181 switch (fl
->fl_flags
& (FL_POSIX
|FL_FLOCK
)) {
5183 res
= posix_lock_file_wait(file
, fl
);
5186 res
= flock_lock_file_wait(file
, fl
);
5194 struct nfs4_unlockdata
{
5195 struct nfs_locku_args arg
;
5196 struct nfs_locku_res res
;
5197 struct nfs4_lock_state
*lsp
;
5198 struct nfs_open_context
*ctx
;
5199 struct file_lock fl
;
5200 const struct nfs_server
*server
;
5201 unsigned long timestamp
;
5204 static struct nfs4_unlockdata
*nfs4_alloc_unlockdata(struct file_lock
*fl
,
5205 struct nfs_open_context
*ctx
,
5206 struct nfs4_lock_state
*lsp
,
5207 struct nfs_seqid
*seqid
)
5209 struct nfs4_unlockdata
*p
;
5210 struct inode
*inode
= lsp
->ls_state
->inode
;
5212 p
= kzalloc(sizeof(*p
), GFP_NOFS
);
5215 p
->arg
.fh
= NFS_FH(inode
);
5217 p
->arg
.seqid
= seqid
;
5218 p
->res
.seqid
= seqid
;
5219 p
->arg
.stateid
= &lsp
->ls_stateid
;
5221 atomic_inc(&lsp
->ls_count
);
5222 /* Ensure we don't close file until we're done freeing locks! */
5223 p
->ctx
= get_nfs_open_context(ctx
);
5224 memcpy(&p
->fl
, fl
, sizeof(p
->fl
));
5225 p
->server
= NFS_SERVER(inode
);
5229 static void nfs4_locku_release_calldata(void *data
)
5231 struct nfs4_unlockdata
*calldata
= data
;
5232 nfs_free_seqid(calldata
->arg
.seqid
);
5233 nfs4_put_lock_state(calldata
->lsp
);
5234 put_nfs_open_context(calldata
->ctx
);
5238 static void nfs4_locku_done(struct rpc_task
*task
, void *data
)
5240 struct nfs4_unlockdata
*calldata
= data
;
5242 if (!nfs4_sequence_done(task
, &calldata
->res
.seq_res
))
5244 switch (task
->tk_status
) {
5246 nfs4_stateid_copy(&calldata
->lsp
->ls_stateid
,
5247 &calldata
->res
.stateid
);
5248 renew_lease(calldata
->server
, calldata
->timestamp
);
5250 case -NFS4ERR_BAD_STATEID
:
5251 case -NFS4ERR_OLD_STATEID
:
5252 case -NFS4ERR_STALE_STATEID
:
5253 case -NFS4ERR_EXPIRED
:
5256 if (nfs4_async_handle_error(task
, calldata
->server
, NULL
) == -EAGAIN
)
5257 rpc_restart_call_prepare(task
);
5259 nfs_release_seqid(calldata
->arg
.seqid
);
5262 static void nfs4_locku_prepare(struct rpc_task
*task
, void *data
)
5264 struct nfs4_unlockdata
*calldata
= data
;
5266 if (nfs_wait_on_sequence(calldata
->arg
.seqid
, task
) != 0)
5268 if (test_bit(NFS_LOCK_INITIALIZED
, &calldata
->lsp
->ls_flags
) == 0) {
5269 /* Note: exit _without_ running nfs4_locku_done */
5272 calldata
->timestamp
= jiffies
;
5273 if (nfs4_setup_sequence(calldata
->server
,
5274 &calldata
->arg
.seq_args
,
5275 &calldata
->res
.seq_res
,
5277 nfs_release_seqid(calldata
->arg
.seqid
);
5280 task
->tk_action
= NULL
;
5282 nfs4_sequence_done(task
, &calldata
->res
.seq_res
);
5285 static const struct rpc_call_ops nfs4_locku_ops
= {
5286 .rpc_call_prepare
= nfs4_locku_prepare
,
5287 .rpc_call_done
= nfs4_locku_done
,
5288 .rpc_release
= nfs4_locku_release_calldata
,
5291 static struct rpc_task
*nfs4_do_unlck(struct file_lock
*fl
,
5292 struct nfs_open_context
*ctx
,
5293 struct nfs4_lock_state
*lsp
,
5294 struct nfs_seqid
*seqid
)
5296 struct nfs4_unlockdata
*data
;
5297 struct rpc_message msg
= {
5298 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOCKU
],
5299 .rpc_cred
= ctx
->cred
,
5301 struct rpc_task_setup task_setup_data
= {
5302 .rpc_client
= NFS_CLIENT(lsp
->ls_state
->inode
),
5303 .rpc_message
= &msg
,
5304 .callback_ops
= &nfs4_locku_ops
,
5305 .workqueue
= nfsiod_workqueue
,
5306 .flags
= RPC_TASK_ASYNC
,
5309 nfs4_state_protect(NFS_SERVER(lsp
->ls_state
->inode
)->nfs_client
,
5310 NFS_SP4_MACH_CRED_CLEANUP
, &task_setup_data
.rpc_client
, &msg
);
5312 /* Ensure this is an unlock - when canceling a lock, the
5313 * canceled lock is passed in, and it won't be an unlock.
5315 fl
->fl_type
= F_UNLCK
;
5317 data
= nfs4_alloc_unlockdata(fl
, ctx
, lsp
, seqid
);
5319 nfs_free_seqid(seqid
);
5320 return ERR_PTR(-ENOMEM
);
5323 nfs4_init_sequence(&data
->arg
.seq_args
, &data
->res
.seq_res
, 1);
5324 msg
.rpc_argp
= &data
->arg
;
5325 msg
.rpc_resp
= &data
->res
;
5326 task_setup_data
.callback_data
= data
;
5327 return rpc_run_task(&task_setup_data
);
5330 static int nfs4_proc_unlck(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
5332 struct inode
*inode
= state
->inode
;
5333 struct nfs4_state_owner
*sp
= state
->owner
;
5334 struct nfs_inode
*nfsi
= NFS_I(inode
);
5335 struct nfs_seqid
*seqid
;
5336 struct nfs4_lock_state
*lsp
;
5337 struct rpc_task
*task
;
5339 unsigned char fl_flags
= request
->fl_flags
;
5341 status
= nfs4_set_lock_state(state
, request
);
5342 /* Unlock _before_ we do the RPC call */
5343 request
->fl_flags
|= FL_EXISTS
;
5344 /* Exclude nfs_delegation_claim_locks() */
5345 mutex_lock(&sp
->so_delegreturn_mutex
);
5346 /* Exclude nfs4_reclaim_open_stateid() - note nesting! */
5347 down_read(&nfsi
->rwsem
);
5348 if (do_vfs_lock(request
->fl_file
, request
) == -ENOENT
) {
5349 up_read(&nfsi
->rwsem
);
5350 mutex_unlock(&sp
->so_delegreturn_mutex
);
5353 up_read(&nfsi
->rwsem
);
5354 mutex_unlock(&sp
->so_delegreturn_mutex
);
5357 /* Is this a delegated lock? */
5358 lsp
= request
->fl_u
.nfs4_fl
.owner
;
5359 if (test_bit(NFS_LOCK_INITIALIZED
, &lsp
->ls_flags
) == 0)
5361 seqid
= nfs_alloc_seqid(&lsp
->ls_seqid
, GFP_KERNEL
);
5365 task
= nfs4_do_unlck(request
, nfs_file_open_context(request
->fl_file
), lsp
, seqid
);
5366 status
= PTR_ERR(task
);
5369 status
= nfs4_wait_for_completion_rpc_task(task
);
5372 request
->fl_flags
= fl_flags
;
5373 trace_nfs4_unlock(request
, state
, F_SETLK
, status
);
5377 struct nfs4_lockdata
{
5378 struct nfs_lock_args arg
;
5379 struct nfs_lock_res res
;
5380 struct nfs4_lock_state
*lsp
;
5381 struct nfs_open_context
*ctx
;
5382 struct file_lock fl
;
5383 unsigned long timestamp
;
5386 struct nfs_server
*server
;
5389 static struct nfs4_lockdata
*nfs4_alloc_lockdata(struct file_lock
*fl
,
5390 struct nfs_open_context
*ctx
, struct nfs4_lock_state
*lsp
,
5393 struct nfs4_lockdata
*p
;
5394 struct inode
*inode
= lsp
->ls_state
->inode
;
5395 struct nfs_server
*server
= NFS_SERVER(inode
);
5397 p
= kzalloc(sizeof(*p
), gfp_mask
);
5401 p
->arg
.fh
= NFS_FH(inode
);
5403 p
->arg
.open_seqid
= nfs_alloc_seqid(&lsp
->ls_state
->owner
->so_seqid
, gfp_mask
);
5404 if (p
->arg
.open_seqid
== NULL
)
5406 p
->arg
.lock_seqid
= nfs_alloc_seqid(&lsp
->ls_seqid
, gfp_mask
);
5407 if (p
->arg
.lock_seqid
== NULL
)
5408 goto out_free_seqid
;
5409 p
->arg
.lock_stateid
= &lsp
->ls_stateid
;
5410 p
->arg
.lock_owner
.clientid
= server
->nfs_client
->cl_clientid
;
5411 p
->arg
.lock_owner
.id
= lsp
->ls_seqid
.owner_id
;
5412 p
->arg
.lock_owner
.s_dev
= server
->s_dev
;
5413 p
->res
.lock_seqid
= p
->arg
.lock_seqid
;
5416 atomic_inc(&lsp
->ls_count
);
5417 p
->ctx
= get_nfs_open_context(ctx
);
5418 memcpy(&p
->fl
, fl
, sizeof(p
->fl
));
5421 nfs_free_seqid(p
->arg
.open_seqid
);
5427 static void nfs4_lock_prepare(struct rpc_task
*task
, void *calldata
)
5429 struct nfs4_lockdata
*data
= calldata
;
5430 struct nfs4_state
*state
= data
->lsp
->ls_state
;
5432 dprintk("%s: begin!\n", __func__
);
5433 if (nfs_wait_on_sequence(data
->arg
.lock_seqid
, task
) != 0)
5435 /* Do we need to do an open_to_lock_owner? */
5436 if (!(data
->arg
.lock_seqid
->sequence
->flags
& NFS_SEQID_CONFIRMED
)) {
5437 if (nfs_wait_on_sequence(data
->arg
.open_seqid
, task
) != 0) {
5438 goto out_release_lock_seqid
;
5440 data
->arg
.open_stateid
= &state
->open_stateid
;
5441 data
->arg
.new_lock_owner
= 1;
5442 data
->res
.open_seqid
= data
->arg
.open_seqid
;
5444 data
->arg
.new_lock_owner
= 0;
5445 if (!nfs4_valid_open_stateid(state
)) {
5446 data
->rpc_status
= -EBADF
;
5447 task
->tk_action
= NULL
;
5448 goto out_release_open_seqid
;
5450 data
->timestamp
= jiffies
;
5451 if (nfs4_setup_sequence(data
->server
,
5452 &data
->arg
.seq_args
,
5456 out_release_open_seqid
:
5457 nfs_release_seqid(data
->arg
.open_seqid
);
5458 out_release_lock_seqid
:
5459 nfs_release_seqid(data
->arg
.lock_seqid
);
5461 nfs4_sequence_done(task
, &data
->res
.seq_res
);
5462 dprintk("%s: done!, ret = %d\n", __func__
, data
->rpc_status
);
5465 static void nfs4_lock_done(struct rpc_task
*task
, void *calldata
)
5467 struct nfs4_lockdata
*data
= calldata
;
5469 dprintk("%s: begin!\n", __func__
);
5471 if (!nfs4_sequence_done(task
, &data
->res
.seq_res
))
5474 data
->rpc_status
= task
->tk_status
;
5475 if (data
->arg
.new_lock_owner
!= 0) {
5476 if (data
->rpc_status
== 0)
5477 nfs_confirm_seqid(&data
->lsp
->ls_seqid
, 0);
5481 if (data
->rpc_status
== 0) {
5482 nfs4_stateid_copy(&data
->lsp
->ls_stateid
, &data
->res
.stateid
);
5483 set_bit(NFS_LOCK_INITIALIZED
, &data
->lsp
->ls_flags
);
5484 renew_lease(NFS_SERVER(data
->ctx
->dentry
->d_inode
), data
->timestamp
);
5487 dprintk("%s: done, ret = %d!\n", __func__
, data
->rpc_status
);
5490 static void nfs4_lock_release(void *calldata
)
5492 struct nfs4_lockdata
*data
= calldata
;
5494 dprintk("%s: begin!\n", __func__
);
5495 nfs_free_seqid(data
->arg
.open_seqid
);
5496 if (data
->cancelled
!= 0) {
5497 struct rpc_task
*task
;
5498 task
= nfs4_do_unlck(&data
->fl
, data
->ctx
, data
->lsp
,
5499 data
->arg
.lock_seqid
);
5501 rpc_put_task_async(task
);
5502 dprintk("%s: cancelling lock!\n", __func__
);
5504 nfs_free_seqid(data
->arg
.lock_seqid
);
5505 nfs4_put_lock_state(data
->lsp
);
5506 put_nfs_open_context(data
->ctx
);
5508 dprintk("%s: done!\n", __func__
);
5511 static const struct rpc_call_ops nfs4_lock_ops
= {
5512 .rpc_call_prepare
= nfs4_lock_prepare
,
5513 .rpc_call_done
= nfs4_lock_done
,
5514 .rpc_release
= nfs4_lock_release
,
5517 static void nfs4_handle_setlk_error(struct nfs_server
*server
, struct nfs4_lock_state
*lsp
, int new_lock_owner
, int error
)
5520 case -NFS4ERR_ADMIN_REVOKED
:
5521 case -NFS4ERR_BAD_STATEID
:
5522 lsp
->ls_seqid
.flags
&= ~NFS_SEQID_CONFIRMED
;
5523 if (new_lock_owner
!= 0 ||
5524 test_bit(NFS_LOCK_INITIALIZED
, &lsp
->ls_flags
) != 0)
5525 nfs4_schedule_stateid_recovery(server
, lsp
->ls_state
);
5527 case -NFS4ERR_STALE_STATEID
:
5528 lsp
->ls_seqid
.flags
&= ~NFS_SEQID_CONFIRMED
;
5529 case -NFS4ERR_EXPIRED
:
5530 nfs4_schedule_lease_recovery(server
->nfs_client
);
5534 static int _nfs4_do_setlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*fl
, int recovery_type
)
5536 struct nfs4_lockdata
*data
;
5537 struct rpc_task
*task
;
5538 struct rpc_message msg
= {
5539 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOCK
],
5540 .rpc_cred
= state
->owner
->so_cred
,
5542 struct rpc_task_setup task_setup_data
= {
5543 .rpc_client
= NFS_CLIENT(state
->inode
),
5544 .rpc_message
= &msg
,
5545 .callback_ops
= &nfs4_lock_ops
,
5546 .workqueue
= nfsiod_workqueue
,
5547 .flags
= RPC_TASK_ASYNC
,
5551 dprintk("%s: begin!\n", __func__
);
5552 data
= nfs4_alloc_lockdata(fl
, nfs_file_open_context(fl
->fl_file
),
5553 fl
->fl_u
.nfs4_fl
.owner
,
5554 recovery_type
== NFS_LOCK_NEW
? GFP_KERNEL
: GFP_NOFS
);
5558 data
->arg
.block
= 1;
5559 nfs4_init_sequence(&data
->arg
.seq_args
, &data
->res
.seq_res
, 1);
5560 msg
.rpc_argp
= &data
->arg
;
5561 msg
.rpc_resp
= &data
->res
;
5562 task_setup_data
.callback_data
= data
;
5563 if (recovery_type
> NFS_LOCK_NEW
) {
5564 if (recovery_type
== NFS_LOCK_RECLAIM
)
5565 data
->arg
.reclaim
= NFS_LOCK_RECLAIM
;
5566 nfs4_set_sequence_privileged(&data
->arg
.seq_args
);
5568 task
= rpc_run_task(&task_setup_data
);
5570 return PTR_ERR(task
);
5571 ret
= nfs4_wait_for_completion_rpc_task(task
);
5573 ret
= data
->rpc_status
;
5575 nfs4_handle_setlk_error(data
->server
, data
->lsp
,
5576 data
->arg
.new_lock_owner
, ret
);
5578 data
->cancelled
= 1;
5580 dprintk("%s: done, ret = %d!\n", __func__
, ret
);
5584 static int nfs4_lock_reclaim(struct nfs4_state
*state
, struct file_lock
*request
)
5586 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
5587 struct nfs4_exception exception
= {
5588 .inode
= state
->inode
,
5593 /* Cache the lock if possible... */
5594 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) != 0)
5596 err
= _nfs4_do_setlk(state
, F_SETLK
, request
, NFS_LOCK_RECLAIM
);
5597 trace_nfs4_lock_reclaim(request
, state
, F_SETLK
, err
);
5598 if (err
!= -NFS4ERR_DELAY
)
5600 nfs4_handle_exception(server
, err
, &exception
);
5601 } while (exception
.retry
);
5605 static int nfs4_lock_expired(struct nfs4_state
*state
, struct file_lock
*request
)
5607 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
5608 struct nfs4_exception exception
= {
5609 .inode
= state
->inode
,
5613 err
= nfs4_set_lock_state(state
, request
);
5616 if (!recover_lost_locks
) {
5617 set_bit(NFS_LOCK_LOST
, &request
->fl_u
.nfs4_fl
.owner
->ls_flags
);
5621 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) != 0)
5623 err
= _nfs4_do_setlk(state
, F_SETLK
, request
, NFS_LOCK_EXPIRED
);
5624 trace_nfs4_lock_expired(request
, state
, F_SETLK
, err
);
5628 case -NFS4ERR_GRACE
:
5629 case -NFS4ERR_DELAY
:
5630 nfs4_handle_exception(server
, err
, &exception
);
5633 } while (exception
.retry
);
5638 #if defined(CONFIG_NFS_V4_1)
5640 * nfs41_check_expired_locks - possibly free a lock stateid
5642 * @state: NFSv4 state for an inode
5644 * Returns NFS_OK if recovery for this stateid is now finished.
5645 * Otherwise a negative NFS4ERR value is returned.
5647 static int nfs41_check_expired_locks(struct nfs4_state
*state
)
5649 int status
, ret
= -NFS4ERR_BAD_STATEID
;
5650 struct nfs4_lock_state
*lsp
;
5651 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
5653 list_for_each_entry(lsp
, &state
->lock_states
, ls_locks
) {
5654 if (test_bit(NFS_LOCK_INITIALIZED
, &lsp
->ls_flags
)) {
5655 struct rpc_cred
*cred
= lsp
->ls_state
->owner
->so_cred
;
5657 status
= nfs41_test_stateid(server
,
5660 trace_nfs4_test_lock_stateid(state
, lsp
, status
);
5661 if (status
!= NFS_OK
) {
5662 /* Free the stateid unless the server
5663 * informs us the stateid is unrecognized. */
5664 if (status
!= -NFS4ERR_BAD_STATEID
)
5665 nfs41_free_stateid(server
,
5668 clear_bit(NFS_LOCK_INITIALIZED
, &lsp
->ls_flags
);
5677 static int nfs41_lock_expired(struct nfs4_state
*state
, struct file_lock
*request
)
5679 int status
= NFS_OK
;
5681 if (test_bit(LK_STATE_IN_USE
, &state
->flags
))
5682 status
= nfs41_check_expired_locks(state
);
5683 if (status
!= NFS_OK
)
5684 status
= nfs4_lock_expired(state
, request
);
5689 static int _nfs4_proc_setlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
5691 struct nfs4_state_owner
*sp
= state
->owner
;
5692 struct nfs_inode
*nfsi
= NFS_I(state
->inode
);
5693 unsigned char fl_flags
= request
->fl_flags
;
5695 int status
= -ENOLCK
;
5697 if ((fl_flags
& FL_POSIX
) &&
5698 !test_bit(NFS_STATE_POSIX_LOCKS
, &state
->flags
))
5700 /* Is this a delegated open? */
5701 status
= nfs4_set_lock_state(state
, request
);
5704 request
->fl_flags
|= FL_ACCESS
;
5705 status
= do_vfs_lock(request
->fl_file
, request
);
5708 down_read(&nfsi
->rwsem
);
5709 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
)) {
5710 /* Yes: cache locks! */
5711 /* ...but avoid races with delegation recall... */
5712 request
->fl_flags
= fl_flags
& ~FL_SLEEP
;
5713 status
= do_vfs_lock(request
->fl_file
, request
);
5716 seq
= raw_seqcount_begin(&sp
->so_reclaim_seqcount
);
5717 up_read(&nfsi
->rwsem
);
5718 status
= _nfs4_do_setlk(state
, cmd
, request
, NFS_LOCK_NEW
);
5721 down_read(&nfsi
->rwsem
);
5722 if (read_seqcount_retry(&sp
->so_reclaim_seqcount
, seq
)) {
5723 status
= -NFS4ERR_DELAY
;
5726 /* Note: we always want to sleep here! */
5727 request
->fl_flags
= fl_flags
| FL_SLEEP
;
5728 if (do_vfs_lock(request
->fl_file
, request
) < 0)
5729 printk(KERN_WARNING
"NFS: %s: VFS is out of sync with lock "
5730 "manager!\n", __func__
);
5732 up_read(&nfsi
->rwsem
);
5734 request
->fl_flags
= fl_flags
;
5738 static int nfs4_proc_setlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
5740 struct nfs4_exception exception
= {
5742 .inode
= state
->inode
,
5747 err
= _nfs4_proc_setlk(state
, cmd
, request
);
5748 trace_nfs4_set_lock(request
, state
, cmd
, err
);
5749 if (err
== -NFS4ERR_DENIED
)
5751 err
= nfs4_handle_exception(NFS_SERVER(state
->inode
),
5753 } while (exception
.retry
);
5758 nfs4_proc_lock(struct file
*filp
, int cmd
, struct file_lock
*request
)
5760 struct nfs_open_context
*ctx
;
5761 struct nfs4_state
*state
;
5762 unsigned long timeout
= NFS4_LOCK_MINTIMEOUT
;
5765 /* verify open state */
5766 ctx
= nfs_file_open_context(filp
);
5769 if (request
->fl_start
< 0 || request
->fl_end
< 0)
5772 if (IS_GETLK(cmd
)) {
5774 return nfs4_proc_getlk(state
, F_GETLK
, request
);
5778 if (!(IS_SETLK(cmd
) || IS_SETLKW(cmd
)))
5781 if (request
->fl_type
== F_UNLCK
) {
5783 return nfs4_proc_unlck(state
, cmd
, request
);
5790 * Don't rely on the VFS having checked the file open mode,
5791 * since it won't do this for flock() locks.
5793 switch (request
->fl_type
) {
5795 if (!(filp
->f_mode
& FMODE_READ
))
5799 if (!(filp
->f_mode
& FMODE_WRITE
))
5804 status
= nfs4_proc_setlk(state
, cmd
, request
);
5805 if ((status
!= -EAGAIN
) || IS_SETLK(cmd
))
5807 timeout
= nfs4_set_lock_task_retry(timeout
);
5808 status
= -ERESTARTSYS
;
5811 } while(status
< 0);
5815 int nfs4_lock_delegation_recall(struct file_lock
*fl
, struct nfs4_state
*state
, const nfs4_stateid
*stateid
)
5817 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
5820 err
= nfs4_set_lock_state(state
, fl
);
5823 err
= _nfs4_do_setlk(state
, F_SETLK
, fl
, NFS_LOCK_NEW
);
5824 return nfs4_handle_delegation_recall_error(server
, state
, stateid
, err
);
5827 struct nfs_release_lockowner_data
{
5828 struct nfs4_lock_state
*lsp
;
5829 struct nfs_server
*server
;
5830 struct nfs_release_lockowner_args args
;
5831 struct nfs4_sequence_args seq_args
;
5832 struct nfs4_sequence_res seq_res
;
5833 unsigned long timestamp
;
5836 static void nfs4_release_lockowner_prepare(struct rpc_task
*task
, void *calldata
)
5838 struct nfs_release_lockowner_data
*data
= calldata
;
5839 nfs40_setup_sequence(data
->server
,
5840 &data
->seq_args
, &data
->seq_res
, task
);
5841 data
->timestamp
= jiffies
;
5844 static void nfs4_release_lockowner_done(struct rpc_task
*task
, void *calldata
)
5846 struct nfs_release_lockowner_data
*data
= calldata
;
5847 struct nfs_server
*server
= data
->server
;
5849 nfs40_sequence_done(task
, &data
->seq_res
);
5851 switch (task
->tk_status
) {
5853 renew_lease(server
, data
->timestamp
);
5855 case -NFS4ERR_STALE_CLIENTID
:
5856 case -NFS4ERR_EXPIRED
:
5857 case -NFS4ERR_LEASE_MOVED
:
5858 case -NFS4ERR_DELAY
:
5859 if (nfs4_async_handle_error(task
, server
, NULL
) == -EAGAIN
)
5860 rpc_restart_call_prepare(task
);
5864 static void nfs4_release_lockowner_release(void *calldata
)
5866 struct nfs_release_lockowner_data
*data
= calldata
;
5867 nfs4_free_lock_state(data
->server
, data
->lsp
);
5871 static const struct rpc_call_ops nfs4_release_lockowner_ops
= {
5872 .rpc_call_prepare
= nfs4_release_lockowner_prepare
,
5873 .rpc_call_done
= nfs4_release_lockowner_done
,
5874 .rpc_release
= nfs4_release_lockowner_release
,
5877 static int nfs4_release_lockowner(struct nfs_server
*server
, struct nfs4_lock_state
*lsp
)
5879 struct nfs_release_lockowner_data
*data
;
5880 struct rpc_message msg
= {
5881 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RELEASE_LOCKOWNER
],
5884 if (server
->nfs_client
->cl_mvops
->minor_version
!= 0)
5887 data
= kmalloc(sizeof(*data
), GFP_NOFS
);
5890 nfs4_init_sequence(&data
->seq_args
, &data
->seq_res
, 0);
5892 data
->server
= server
;
5893 data
->args
.lock_owner
.clientid
= server
->nfs_client
->cl_clientid
;
5894 data
->args
.lock_owner
.id
= lsp
->ls_seqid
.owner_id
;
5895 data
->args
.lock_owner
.s_dev
= server
->s_dev
;
5897 msg
.rpc_argp
= &data
->args
;
5898 rpc_call_async(server
->client
, &msg
, 0, &nfs4_release_lockowner_ops
, data
);
5902 #define XATTR_NAME_NFSV4_ACL "system.nfs4_acl"
5904 static int nfs4_xattr_set_nfs4_acl(struct dentry
*dentry
, const char *key
,
5905 const void *buf
, size_t buflen
,
5906 int flags
, int type
)
5908 if (strcmp(key
, "") != 0)
5911 return nfs4_proc_set_acl(dentry
->d_inode
, buf
, buflen
);
5914 static int nfs4_xattr_get_nfs4_acl(struct dentry
*dentry
, const char *key
,
5915 void *buf
, size_t buflen
, int type
)
5917 if (strcmp(key
, "") != 0)
5920 return nfs4_proc_get_acl(dentry
->d_inode
, buf
, buflen
);
5923 static size_t nfs4_xattr_list_nfs4_acl(struct dentry
*dentry
, char *list
,
5924 size_t list_len
, const char *name
,
5925 size_t name_len
, int type
)
5927 size_t len
= sizeof(XATTR_NAME_NFSV4_ACL
);
5929 if (!nfs4_server_supports_acls(NFS_SERVER(dentry
->d_inode
)))
5932 if (list
&& len
<= list_len
)
5933 memcpy(list
, XATTR_NAME_NFSV4_ACL
, len
);
5937 #ifdef CONFIG_NFS_V4_SECURITY_LABEL
5938 static inline int nfs4_server_supports_labels(struct nfs_server
*server
)
5940 return server
->caps
& NFS_CAP_SECURITY_LABEL
;
5943 static int nfs4_xattr_set_nfs4_label(struct dentry
*dentry
, const char *key
,
5944 const void *buf
, size_t buflen
,
5945 int flags
, int type
)
5947 if (security_ismaclabel(key
))
5948 return nfs4_set_security_label(dentry
, buf
, buflen
);
5953 static int nfs4_xattr_get_nfs4_label(struct dentry
*dentry
, const char *key
,
5954 void *buf
, size_t buflen
, int type
)
5956 if (security_ismaclabel(key
))
5957 return nfs4_get_security_label(dentry
->d_inode
, buf
, buflen
);
5961 static size_t nfs4_xattr_list_nfs4_label(struct dentry
*dentry
, char *list
,
5962 size_t list_len
, const char *name
,
5963 size_t name_len
, int type
)
5967 if (nfs_server_capable(dentry
->d_inode
, NFS_CAP_SECURITY_LABEL
)) {
5968 len
= security_inode_listsecurity(dentry
->d_inode
, NULL
, 0);
5969 if (list
&& len
<= list_len
)
5970 security_inode_listsecurity(dentry
->d_inode
, list
, len
);
5975 static const struct xattr_handler nfs4_xattr_nfs4_label_handler
= {
5976 .prefix
= XATTR_SECURITY_PREFIX
,
5977 .list
= nfs4_xattr_list_nfs4_label
,
5978 .get
= nfs4_xattr_get_nfs4_label
,
5979 .set
= nfs4_xattr_set_nfs4_label
,
5985 * nfs_fhget will use either the mounted_on_fileid or the fileid
5987 static void nfs_fixup_referral_attributes(struct nfs_fattr
*fattr
)
5989 if (!(((fattr
->valid
& NFS_ATTR_FATTR_MOUNTED_ON_FILEID
) ||
5990 (fattr
->valid
& NFS_ATTR_FATTR_FILEID
)) &&
5991 (fattr
->valid
& NFS_ATTR_FATTR_FSID
) &&
5992 (fattr
->valid
& NFS_ATTR_FATTR_V4_LOCATIONS
)))
5995 fattr
->valid
|= NFS_ATTR_FATTR_TYPE
| NFS_ATTR_FATTR_MODE
|
5996 NFS_ATTR_FATTR_NLINK
| NFS_ATTR_FATTR_V4_REFERRAL
;
5997 fattr
->mode
= S_IFDIR
| S_IRUGO
| S_IXUGO
;
6001 static int _nfs4_proc_fs_locations(struct rpc_clnt
*client
, struct inode
*dir
,
6002 const struct qstr
*name
,
6003 struct nfs4_fs_locations
*fs_locations
,
6006 struct nfs_server
*server
= NFS_SERVER(dir
);
6008 [0] = FATTR4_WORD0_FSID
| FATTR4_WORD0_FS_LOCATIONS
,
6010 struct nfs4_fs_locations_arg args
= {
6011 .dir_fh
= NFS_FH(dir
),
6016 struct nfs4_fs_locations_res res
= {
6017 .fs_locations
= fs_locations
,
6019 struct rpc_message msg
= {
6020 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_FS_LOCATIONS
],
6026 dprintk("%s: start\n", __func__
);
6028 /* Ask for the fileid of the absent filesystem if mounted_on_fileid
6029 * is not supported */
6030 if (NFS_SERVER(dir
)->attr_bitmask
[1] & FATTR4_WORD1_MOUNTED_ON_FILEID
)
6031 bitmask
[1] |= FATTR4_WORD1_MOUNTED_ON_FILEID
;
6033 bitmask
[0] |= FATTR4_WORD0_FILEID
;
6035 nfs_fattr_init(&fs_locations
->fattr
);
6036 fs_locations
->server
= server
;
6037 fs_locations
->nlocations
= 0;
6038 status
= nfs4_call_sync(client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
6039 dprintk("%s: returned status = %d\n", __func__
, status
);
6043 int nfs4_proc_fs_locations(struct rpc_clnt
*client
, struct inode
*dir
,
6044 const struct qstr
*name
,
6045 struct nfs4_fs_locations
*fs_locations
,
6048 struct nfs4_exception exception
= { };
6051 err
= _nfs4_proc_fs_locations(client
, dir
, name
,
6052 fs_locations
, page
);
6053 trace_nfs4_get_fs_locations(dir
, name
, err
);
6054 err
= nfs4_handle_exception(NFS_SERVER(dir
), err
,
6056 } while (exception
.retry
);
6061 * This operation also signals the server that this client is
6062 * performing migration recovery. The server can stop returning
6063 * NFS4ERR_LEASE_MOVED to this client. A RENEW operation is
6064 * appended to this compound to identify the client ID which is
6065 * performing recovery.
6067 static int _nfs40_proc_get_locations(struct inode
*inode
,
6068 struct nfs4_fs_locations
*locations
,
6069 struct page
*page
, struct rpc_cred
*cred
)
6071 struct nfs_server
*server
= NFS_SERVER(inode
);
6072 struct rpc_clnt
*clnt
= server
->client
;
6074 [0] = FATTR4_WORD0_FSID
| FATTR4_WORD0_FS_LOCATIONS
,
6076 struct nfs4_fs_locations_arg args
= {
6077 .clientid
= server
->nfs_client
->cl_clientid
,
6078 .fh
= NFS_FH(inode
),
6081 .migration
= 1, /* skip LOOKUP */
6082 .renew
= 1, /* append RENEW */
6084 struct nfs4_fs_locations_res res
= {
6085 .fs_locations
= locations
,
6089 struct rpc_message msg
= {
6090 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_FS_LOCATIONS
],
6095 unsigned long now
= jiffies
;
6098 nfs_fattr_init(&locations
->fattr
);
6099 locations
->server
= server
;
6100 locations
->nlocations
= 0;
6102 nfs4_init_sequence(&args
.seq_args
, &res
.seq_res
, 0);
6103 nfs4_set_sequence_privileged(&args
.seq_args
);
6104 status
= nfs4_call_sync_sequence(clnt
, server
, &msg
,
6105 &args
.seq_args
, &res
.seq_res
);
6109 renew_lease(server
, now
);
6113 #ifdef CONFIG_NFS_V4_1
6116 * This operation also signals the server that this client is
6117 * performing migration recovery. The server can stop asserting
6118 * SEQ4_STATUS_LEASE_MOVED for this client. The client ID
6119 * performing this operation is identified in the SEQUENCE
6120 * operation in this compound.
6122 * When the client supports GETATTR(fs_locations_info), it can
6123 * be plumbed in here.
6125 static int _nfs41_proc_get_locations(struct inode
*inode
,
6126 struct nfs4_fs_locations
*locations
,
6127 struct page
*page
, struct rpc_cred
*cred
)
6129 struct nfs_server
*server
= NFS_SERVER(inode
);
6130 struct rpc_clnt
*clnt
= server
->client
;
6132 [0] = FATTR4_WORD0_FSID
| FATTR4_WORD0_FS_LOCATIONS
,
6134 struct nfs4_fs_locations_arg args
= {
6135 .fh
= NFS_FH(inode
),
6138 .migration
= 1, /* skip LOOKUP */
6140 struct nfs4_fs_locations_res res
= {
6141 .fs_locations
= locations
,
6144 struct rpc_message msg
= {
6145 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_FS_LOCATIONS
],
6152 nfs_fattr_init(&locations
->fattr
);
6153 locations
->server
= server
;
6154 locations
->nlocations
= 0;
6156 nfs4_init_sequence(&args
.seq_args
, &res
.seq_res
, 0);
6157 nfs4_set_sequence_privileged(&args
.seq_args
);
6158 status
= nfs4_call_sync_sequence(clnt
, server
, &msg
,
6159 &args
.seq_args
, &res
.seq_res
);
6160 if (status
== NFS4_OK
&&
6161 res
.seq_res
.sr_status_flags
& SEQ4_STATUS_LEASE_MOVED
)
6162 status
= -NFS4ERR_LEASE_MOVED
;
6166 #endif /* CONFIG_NFS_V4_1 */
6169 * nfs4_proc_get_locations - discover locations for a migrated FSID
6170 * @inode: inode on FSID that is migrating
6171 * @locations: result of query
6173 * @cred: credential to use for this operation
6175 * Returns NFS4_OK on success, a negative NFS4ERR status code if the
6176 * operation failed, or a negative errno if a local error occurred.
6178 * On success, "locations" is filled in, but if the server has
6179 * no locations information, NFS_ATTR_FATTR_V4_LOCATIONS is not
6182 * -NFS4ERR_LEASE_MOVED is returned if the server still has leases
6183 * from this client that require migration recovery.
6185 int nfs4_proc_get_locations(struct inode
*inode
,
6186 struct nfs4_fs_locations
*locations
,
6187 struct page
*page
, struct rpc_cred
*cred
)
6189 struct nfs_server
*server
= NFS_SERVER(inode
);
6190 struct nfs_client
*clp
= server
->nfs_client
;
6191 const struct nfs4_mig_recovery_ops
*ops
=
6192 clp
->cl_mvops
->mig_recovery_ops
;
6193 struct nfs4_exception exception
= { };
6196 dprintk("%s: FSID %llx:%llx on \"%s\"\n", __func__
,
6197 (unsigned long long)server
->fsid
.major
,
6198 (unsigned long long)server
->fsid
.minor
,
6200 nfs_display_fhandle(NFS_FH(inode
), __func__
);
6203 status
= ops
->get_locations(inode
, locations
, page
, cred
);
6204 if (status
!= -NFS4ERR_DELAY
)
6206 nfs4_handle_exception(server
, status
, &exception
);
6207 } while (exception
.retry
);
6212 * This operation also signals the server that this client is
6213 * performing "lease moved" recovery. The server can stop
6214 * returning NFS4ERR_LEASE_MOVED to this client. A RENEW operation
6215 * is appended to this compound to identify the client ID which is
6216 * performing recovery.
6218 static int _nfs40_proc_fsid_present(struct inode
*inode
, struct rpc_cred
*cred
)
6220 struct nfs_server
*server
= NFS_SERVER(inode
);
6221 struct nfs_client
*clp
= NFS_SERVER(inode
)->nfs_client
;
6222 struct rpc_clnt
*clnt
= server
->client
;
6223 struct nfs4_fsid_present_arg args
= {
6224 .fh
= NFS_FH(inode
),
6225 .clientid
= clp
->cl_clientid
,
6226 .renew
= 1, /* append RENEW */
6228 struct nfs4_fsid_present_res res
= {
6231 struct rpc_message msg
= {
6232 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_FSID_PRESENT
],
6237 unsigned long now
= jiffies
;
6240 res
.fh
= nfs_alloc_fhandle();
6244 nfs4_init_sequence(&args
.seq_args
, &res
.seq_res
, 0);
6245 nfs4_set_sequence_privileged(&args
.seq_args
);
6246 status
= nfs4_call_sync_sequence(clnt
, server
, &msg
,
6247 &args
.seq_args
, &res
.seq_res
);
6248 nfs_free_fhandle(res
.fh
);
6252 do_renew_lease(clp
, now
);
6256 #ifdef CONFIG_NFS_V4_1
6259 * This operation also signals the server that this client is
6260 * performing "lease moved" recovery. The server can stop asserting
6261 * SEQ4_STATUS_LEASE_MOVED for this client. The client ID performing
6262 * this operation is identified in the SEQUENCE operation in this
6265 static int _nfs41_proc_fsid_present(struct inode
*inode
, struct rpc_cred
*cred
)
6267 struct nfs_server
*server
= NFS_SERVER(inode
);
6268 struct rpc_clnt
*clnt
= server
->client
;
6269 struct nfs4_fsid_present_arg args
= {
6270 .fh
= NFS_FH(inode
),
6272 struct nfs4_fsid_present_res res
= {
6274 struct rpc_message msg
= {
6275 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_FSID_PRESENT
],
6282 res
.fh
= nfs_alloc_fhandle();
6286 nfs4_init_sequence(&args
.seq_args
, &res
.seq_res
, 0);
6287 nfs4_set_sequence_privileged(&args
.seq_args
);
6288 status
= nfs4_call_sync_sequence(clnt
, server
, &msg
,
6289 &args
.seq_args
, &res
.seq_res
);
6290 nfs_free_fhandle(res
.fh
);
6291 if (status
== NFS4_OK
&&
6292 res
.seq_res
.sr_status_flags
& SEQ4_STATUS_LEASE_MOVED
)
6293 status
= -NFS4ERR_LEASE_MOVED
;
6297 #endif /* CONFIG_NFS_V4_1 */
6300 * nfs4_proc_fsid_present - Is this FSID present or absent on server?
6301 * @inode: inode on FSID to check
6302 * @cred: credential to use for this operation
6304 * Server indicates whether the FSID is present, moved, or not
6305 * recognized. This operation is necessary to clear a LEASE_MOVED
6306 * condition for this client ID.
6308 * Returns NFS4_OK if the FSID is present on this server,
6309 * -NFS4ERR_MOVED if the FSID is no longer present, a negative
6310 * NFS4ERR code if some error occurred on the server, or a
6311 * negative errno if a local failure occurred.
6313 int nfs4_proc_fsid_present(struct inode
*inode
, struct rpc_cred
*cred
)
6315 struct nfs_server
*server
= NFS_SERVER(inode
);
6316 struct nfs_client
*clp
= server
->nfs_client
;
6317 const struct nfs4_mig_recovery_ops
*ops
=
6318 clp
->cl_mvops
->mig_recovery_ops
;
6319 struct nfs4_exception exception
= { };
6322 dprintk("%s: FSID %llx:%llx on \"%s\"\n", __func__
,
6323 (unsigned long long)server
->fsid
.major
,
6324 (unsigned long long)server
->fsid
.minor
,
6326 nfs_display_fhandle(NFS_FH(inode
), __func__
);
6329 status
= ops
->fsid_present(inode
, cred
);
6330 if (status
!= -NFS4ERR_DELAY
)
6332 nfs4_handle_exception(server
, status
, &exception
);
6333 } while (exception
.retry
);
6338 * If 'use_integrity' is true and the state managment nfs_client
6339 * cl_rpcclient is using krb5i/p, use the integrity protected cl_rpcclient
6340 * and the machine credential as per RFC3530bis and RFC5661 Security
6341 * Considerations sections. Otherwise, just use the user cred with the
6342 * filesystem's rpc_client.
6344 static int _nfs4_proc_secinfo(struct inode
*dir
, const struct qstr
*name
, struct nfs4_secinfo_flavors
*flavors
, bool use_integrity
)
6347 struct nfs4_secinfo_arg args
= {
6348 .dir_fh
= NFS_FH(dir
),
6351 struct nfs4_secinfo_res res
= {
6354 struct rpc_message msg
= {
6355 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SECINFO
],
6359 struct rpc_clnt
*clnt
= NFS_SERVER(dir
)->client
;
6360 struct rpc_cred
*cred
= NULL
;
6362 if (use_integrity
) {
6363 clnt
= NFS_SERVER(dir
)->nfs_client
->cl_rpcclient
;
6364 cred
= nfs4_get_clid_cred(NFS_SERVER(dir
)->nfs_client
);
6365 msg
.rpc_cred
= cred
;
6368 dprintk("NFS call secinfo %s\n", name
->name
);
6370 nfs4_state_protect(NFS_SERVER(dir
)->nfs_client
,
6371 NFS_SP4_MACH_CRED_SECINFO
, &clnt
, &msg
);
6373 status
= nfs4_call_sync(clnt
, NFS_SERVER(dir
), &msg
, &args
.seq_args
,
6375 dprintk("NFS reply secinfo: %d\n", status
);
6383 int nfs4_proc_secinfo(struct inode
*dir
, const struct qstr
*name
,
6384 struct nfs4_secinfo_flavors
*flavors
)
6386 struct nfs4_exception exception
= { };
6389 err
= -NFS4ERR_WRONGSEC
;
6391 /* try to use integrity protection with machine cred */
6392 if (_nfs4_is_integrity_protected(NFS_SERVER(dir
)->nfs_client
))
6393 err
= _nfs4_proc_secinfo(dir
, name
, flavors
, true);
6396 * if unable to use integrity protection, or SECINFO with
6397 * integrity protection returns NFS4ERR_WRONGSEC (which is
6398 * disallowed by spec, but exists in deployed servers) use
6399 * the current filesystem's rpc_client and the user cred.
6401 if (err
== -NFS4ERR_WRONGSEC
)
6402 err
= _nfs4_proc_secinfo(dir
, name
, flavors
, false);
6404 trace_nfs4_secinfo(dir
, name
, err
);
6405 err
= nfs4_handle_exception(NFS_SERVER(dir
), err
,
6407 } while (exception
.retry
);
6411 #ifdef CONFIG_NFS_V4_1
6413 * Check the exchange flags returned by the server for invalid flags, having
6414 * both PNFS and NON_PNFS flags set, and not having one of NON_PNFS, PNFS, or
6417 static int nfs4_check_cl_exchange_flags(u32 flags
)
6419 if (flags
& ~EXCHGID4_FLAG_MASK_R
)
6421 if ((flags
& EXCHGID4_FLAG_USE_PNFS_MDS
) &&
6422 (flags
& EXCHGID4_FLAG_USE_NON_PNFS
))
6424 if (!(flags
& (EXCHGID4_FLAG_MASK_PNFS
)))
6428 return -NFS4ERR_INVAL
;
6432 nfs41_same_server_scope(struct nfs41_server_scope
*a
,
6433 struct nfs41_server_scope
*b
)
6435 if (a
->server_scope_sz
== b
->server_scope_sz
&&
6436 memcmp(a
->server_scope
, b
->server_scope
, a
->server_scope_sz
) == 0)
6443 * nfs4_proc_bind_conn_to_session()
6445 * The 4.1 client currently uses the same TCP connection for the
6446 * fore and backchannel.
6448 int nfs4_proc_bind_conn_to_session(struct nfs_client
*clp
, struct rpc_cred
*cred
)
6451 struct nfs41_bind_conn_to_session_res res
;
6452 struct rpc_message msg
= {
6454 &nfs4_procedures
[NFSPROC4_CLNT_BIND_CONN_TO_SESSION
],
6460 dprintk("--> %s\n", __func__
);
6462 res
.session
= kzalloc(sizeof(struct nfs4_session
), GFP_NOFS
);
6463 if (unlikely(res
.session
== NULL
)) {
6468 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
6469 trace_nfs4_bind_conn_to_session(clp
, status
);
6471 if (memcmp(res
.session
->sess_id
.data
,
6472 clp
->cl_session
->sess_id
.data
, NFS4_MAX_SESSIONID_LEN
)) {
6473 dprintk("NFS: %s: Session ID mismatch\n", __func__
);
6477 if (res
.dir
!= NFS4_CDFS4_BOTH
) {
6478 dprintk("NFS: %s: Unexpected direction from server\n",
6483 if (res
.use_conn_in_rdma_mode
) {
6484 dprintk("NFS: %s: Server returned RDMA mode = true\n",
6493 dprintk("<-- %s status= %d\n", __func__
, status
);
6498 * Minimum set of SP4_MACH_CRED operations from RFC 5661 in the enforce map
6499 * and operations we'd like to see to enable certain features in the allow map
6501 static const struct nfs41_state_protection nfs4_sp4_mach_cred_request
= {
6502 .how
= SP4_MACH_CRED
,
6503 .enforce
.u
.words
= {
6504 [1] = 1 << (OP_BIND_CONN_TO_SESSION
- 32) |
6505 1 << (OP_EXCHANGE_ID
- 32) |
6506 1 << (OP_CREATE_SESSION
- 32) |
6507 1 << (OP_DESTROY_SESSION
- 32) |
6508 1 << (OP_DESTROY_CLIENTID
- 32)
6511 [0] = 1 << (OP_CLOSE
) |
6514 [1] = 1 << (OP_SECINFO
- 32) |
6515 1 << (OP_SECINFO_NO_NAME
- 32) |
6516 1 << (OP_TEST_STATEID
- 32) |
6517 1 << (OP_FREE_STATEID
- 32) |
6518 1 << (OP_WRITE
- 32)
6523 * Select the state protection mode for client `clp' given the server results
6524 * from exchange_id in `sp'.
6526 * Returns 0 on success, negative errno otherwise.
6528 static int nfs4_sp4_select_mode(struct nfs_client
*clp
,
6529 struct nfs41_state_protection
*sp
)
6531 static const u32 supported_enforce
[NFS4_OP_MAP_NUM_WORDS
] = {
6532 [1] = 1 << (OP_BIND_CONN_TO_SESSION
- 32) |
6533 1 << (OP_EXCHANGE_ID
- 32) |
6534 1 << (OP_CREATE_SESSION
- 32) |
6535 1 << (OP_DESTROY_SESSION
- 32) |
6536 1 << (OP_DESTROY_CLIENTID
- 32)
6540 if (sp
->how
== SP4_MACH_CRED
) {
6541 /* Print state protect result */
6542 dfprintk(MOUNT
, "Server SP4_MACH_CRED support:\n");
6543 for (i
= 0; i
<= LAST_NFS4_OP
; i
++) {
6544 if (test_bit(i
, sp
->enforce
.u
.longs
))
6545 dfprintk(MOUNT
, " enforce op %d\n", i
);
6546 if (test_bit(i
, sp
->allow
.u
.longs
))
6547 dfprintk(MOUNT
, " allow op %d\n", i
);
6550 /* make sure nothing is on enforce list that isn't supported */
6551 for (i
= 0; i
< NFS4_OP_MAP_NUM_WORDS
; i
++) {
6552 if (sp
->enforce
.u
.words
[i
] & ~supported_enforce
[i
]) {
6553 dfprintk(MOUNT
, "sp4_mach_cred: disabled\n");
6559 * Minimal mode - state operations are allowed to use machine
6560 * credential. Note this already happens by default, so the
6561 * client doesn't have to do anything more than the negotiation.
6563 * NOTE: we don't care if EXCHANGE_ID is in the list -
6564 * we're already using the machine cred for exchange_id
6565 * and will never use a different cred.
6567 if (test_bit(OP_BIND_CONN_TO_SESSION
, sp
->enforce
.u
.longs
) &&
6568 test_bit(OP_CREATE_SESSION
, sp
->enforce
.u
.longs
) &&
6569 test_bit(OP_DESTROY_SESSION
, sp
->enforce
.u
.longs
) &&
6570 test_bit(OP_DESTROY_CLIENTID
, sp
->enforce
.u
.longs
)) {
6571 dfprintk(MOUNT
, "sp4_mach_cred:\n");
6572 dfprintk(MOUNT
, " minimal mode enabled\n");
6573 set_bit(NFS_SP4_MACH_CRED_MINIMAL
, &clp
->cl_sp4_flags
);
6575 dfprintk(MOUNT
, "sp4_mach_cred: disabled\n");
6579 if (test_bit(OP_CLOSE
, sp
->allow
.u
.longs
) &&
6580 test_bit(OP_LOCKU
, sp
->allow
.u
.longs
)) {
6581 dfprintk(MOUNT
, " cleanup mode enabled\n");
6582 set_bit(NFS_SP4_MACH_CRED_CLEANUP
, &clp
->cl_sp4_flags
);
6585 if (test_bit(OP_SECINFO
, sp
->allow
.u
.longs
) &&
6586 test_bit(OP_SECINFO_NO_NAME
, sp
->allow
.u
.longs
)) {
6587 dfprintk(MOUNT
, " secinfo mode enabled\n");
6588 set_bit(NFS_SP4_MACH_CRED_SECINFO
, &clp
->cl_sp4_flags
);
6591 if (test_bit(OP_TEST_STATEID
, sp
->allow
.u
.longs
) &&
6592 test_bit(OP_FREE_STATEID
, sp
->allow
.u
.longs
)) {
6593 dfprintk(MOUNT
, " stateid mode enabled\n");
6594 set_bit(NFS_SP4_MACH_CRED_STATEID
, &clp
->cl_sp4_flags
);
6597 if (test_bit(OP_WRITE
, sp
->allow
.u
.longs
)) {
6598 dfprintk(MOUNT
, " write mode enabled\n");
6599 set_bit(NFS_SP4_MACH_CRED_WRITE
, &clp
->cl_sp4_flags
);
6602 if (test_bit(OP_COMMIT
, sp
->allow
.u
.longs
)) {
6603 dfprintk(MOUNT
, " commit mode enabled\n");
6604 set_bit(NFS_SP4_MACH_CRED_COMMIT
, &clp
->cl_sp4_flags
);
6612 * _nfs4_proc_exchange_id()
6614 * Wrapper for EXCHANGE_ID operation.
6616 static int _nfs4_proc_exchange_id(struct nfs_client
*clp
, struct rpc_cred
*cred
,
6619 nfs4_verifier verifier
;
6620 struct nfs41_exchange_id_args args
= {
6621 .verifier
= &verifier
,
6623 #ifdef CONFIG_NFS_V4_1_MIGRATION
6624 .flags
= EXCHGID4_FLAG_SUPP_MOVED_REFER
|
6625 EXCHGID4_FLAG_BIND_PRINC_STATEID
|
6626 EXCHGID4_FLAG_SUPP_MOVED_MIGR
,
6628 .flags
= EXCHGID4_FLAG_SUPP_MOVED_REFER
|
6629 EXCHGID4_FLAG_BIND_PRINC_STATEID
,
6632 struct nfs41_exchange_id_res res
= {
6636 struct rpc_message msg
= {
6637 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_EXCHANGE_ID
],
6643 nfs4_init_boot_verifier(clp
, &verifier
);
6644 args
.id_len
= nfs4_init_uniform_client_string(clp
, args
.id
,
6646 dprintk("NFS call exchange_id auth=%s, '%.*s'\n",
6647 clp
->cl_rpcclient
->cl_auth
->au_ops
->au_name
,
6648 args
.id_len
, args
.id
);
6650 res
.server_owner
= kzalloc(sizeof(struct nfs41_server_owner
),
6652 if (unlikely(res
.server_owner
== NULL
)) {
6657 res
.server_scope
= kzalloc(sizeof(struct nfs41_server_scope
),
6659 if (unlikely(res
.server_scope
== NULL
)) {
6661 goto out_server_owner
;
6664 res
.impl_id
= kzalloc(sizeof(struct nfs41_impl_id
), GFP_NOFS
);
6665 if (unlikely(res
.impl_id
== NULL
)) {
6667 goto out_server_scope
;
6672 args
.state_protect
.how
= SP4_NONE
;
6676 args
.state_protect
= nfs4_sp4_mach_cred_request
;
6683 goto out_server_scope
;
6686 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
6687 trace_nfs4_exchange_id(clp
, status
);
6689 status
= nfs4_check_cl_exchange_flags(res
.flags
);
6692 status
= nfs4_sp4_select_mode(clp
, &res
.state_protect
);
6695 clp
->cl_clientid
= res
.clientid
;
6696 clp
->cl_exchange_flags
= (res
.flags
& ~EXCHGID4_FLAG_CONFIRMED_R
);
6697 if (!(res
.flags
& EXCHGID4_FLAG_CONFIRMED_R
))
6698 clp
->cl_seqid
= res
.seqid
;
6700 kfree(clp
->cl_serverowner
);
6701 clp
->cl_serverowner
= res
.server_owner
;
6702 res
.server_owner
= NULL
;
6704 /* use the most recent implementation id */
6705 kfree(clp
->cl_implid
);
6706 clp
->cl_implid
= res
.impl_id
;
6708 if (clp
->cl_serverscope
!= NULL
&&
6709 !nfs41_same_server_scope(clp
->cl_serverscope
,
6710 res
.server_scope
)) {
6711 dprintk("%s: server_scope mismatch detected\n",
6713 set_bit(NFS4CLNT_SERVER_SCOPE_MISMATCH
, &clp
->cl_state
);
6714 kfree(clp
->cl_serverscope
);
6715 clp
->cl_serverscope
= NULL
;
6718 if (clp
->cl_serverscope
== NULL
) {
6719 clp
->cl_serverscope
= res
.server_scope
;
6726 kfree(res
.server_owner
);
6728 kfree(res
.server_scope
);
6730 if (clp
->cl_implid
!= NULL
)
6731 dprintk("NFS reply exchange_id: Server Implementation ID: "
6732 "domain: %s, name: %s, date: %llu,%u\n",
6733 clp
->cl_implid
->domain
, clp
->cl_implid
->name
,
6734 clp
->cl_implid
->date
.seconds
,
6735 clp
->cl_implid
->date
.nseconds
);
6736 dprintk("NFS reply exchange_id: %d\n", status
);
6741 * nfs4_proc_exchange_id()
6743 * Returns zero, a negative errno, or a negative NFS4ERR status code.
6745 * Since the clientid has expired, all compounds using sessions
6746 * associated with the stale clientid will be returning
6747 * NFS4ERR_BADSESSION in the sequence operation, and will therefore
6748 * be in some phase of session reset.
6750 * Will attempt to negotiate SP4_MACH_CRED if krb5i / krb5p auth is used.
6752 int nfs4_proc_exchange_id(struct nfs_client
*clp
, struct rpc_cred
*cred
)
6754 rpc_authflavor_t authflavor
= clp
->cl_rpcclient
->cl_auth
->au_flavor
;
6757 /* try SP4_MACH_CRED if krb5i/p */
6758 if (authflavor
== RPC_AUTH_GSS_KRB5I
||
6759 authflavor
== RPC_AUTH_GSS_KRB5P
) {
6760 status
= _nfs4_proc_exchange_id(clp
, cred
, SP4_MACH_CRED
);
6766 return _nfs4_proc_exchange_id(clp
, cred
, SP4_NONE
);
6769 static int _nfs4_proc_destroy_clientid(struct nfs_client
*clp
,
6770 struct rpc_cred
*cred
)
6772 struct rpc_message msg
= {
6773 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_DESTROY_CLIENTID
],
6779 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
6780 trace_nfs4_destroy_clientid(clp
, status
);
6782 dprintk("NFS: Got error %d from the server %s on "
6783 "DESTROY_CLIENTID.", status
, clp
->cl_hostname
);
6787 static int nfs4_proc_destroy_clientid(struct nfs_client
*clp
,
6788 struct rpc_cred
*cred
)
6793 for (loop
= NFS4_MAX_LOOP_ON_RECOVER
; loop
!= 0; loop
--) {
6794 ret
= _nfs4_proc_destroy_clientid(clp
, cred
);
6796 case -NFS4ERR_DELAY
:
6797 case -NFS4ERR_CLIENTID_BUSY
:
6807 int nfs4_destroy_clientid(struct nfs_client
*clp
)
6809 struct rpc_cred
*cred
;
6812 if (clp
->cl_mvops
->minor_version
< 1)
6814 if (clp
->cl_exchange_flags
== 0)
6816 if (clp
->cl_preserve_clid
)
6818 cred
= nfs4_get_clid_cred(clp
);
6819 ret
= nfs4_proc_destroy_clientid(clp
, cred
);
6824 case -NFS4ERR_STALE_CLIENTID
:
6825 clp
->cl_exchange_flags
= 0;
6831 struct nfs4_get_lease_time_data
{
6832 struct nfs4_get_lease_time_args
*args
;
6833 struct nfs4_get_lease_time_res
*res
;
6834 struct nfs_client
*clp
;
6837 static void nfs4_get_lease_time_prepare(struct rpc_task
*task
,
6840 struct nfs4_get_lease_time_data
*data
=
6841 (struct nfs4_get_lease_time_data
*)calldata
;
6843 dprintk("--> %s\n", __func__
);
6844 /* just setup sequence, do not trigger session recovery
6845 since we're invoked within one */
6846 nfs41_setup_sequence(data
->clp
->cl_session
,
6847 &data
->args
->la_seq_args
,
6848 &data
->res
->lr_seq_res
,
6850 dprintk("<-- %s\n", __func__
);
6854 * Called from nfs4_state_manager thread for session setup, so don't recover
6855 * from sequence operation or clientid errors.
6857 static void nfs4_get_lease_time_done(struct rpc_task
*task
, void *calldata
)
6859 struct nfs4_get_lease_time_data
*data
=
6860 (struct nfs4_get_lease_time_data
*)calldata
;
6862 dprintk("--> %s\n", __func__
);
6863 if (!nfs41_sequence_done(task
, &data
->res
->lr_seq_res
))
6865 switch (task
->tk_status
) {
6866 case -NFS4ERR_DELAY
:
6867 case -NFS4ERR_GRACE
:
6868 dprintk("%s Retry: tk_status %d\n", __func__
, task
->tk_status
);
6869 rpc_delay(task
, NFS4_POLL_RETRY_MIN
);
6870 task
->tk_status
= 0;
6872 case -NFS4ERR_RETRY_UNCACHED_REP
:
6873 rpc_restart_call_prepare(task
);
6876 dprintk("<-- %s\n", __func__
);
6879 static const struct rpc_call_ops nfs4_get_lease_time_ops
= {
6880 .rpc_call_prepare
= nfs4_get_lease_time_prepare
,
6881 .rpc_call_done
= nfs4_get_lease_time_done
,
6884 int nfs4_proc_get_lease_time(struct nfs_client
*clp
, struct nfs_fsinfo
*fsinfo
)
6886 struct rpc_task
*task
;
6887 struct nfs4_get_lease_time_args args
;
6888 struct nfs4_get_lease_time_res res
= {
6889 .lr_fsinfo
= fsinfo
,
6891 struct nfs4_get_lease_time_data data
= {
6896 struct rpc_message msg
= {
6897 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GET_LEASE_TIME
],
6901 struct rpc_task_setup task_setup
= {
6902 .rpc_client
= clp
->cl_rpcclient
,
6903 .rpc_message
= &msg
,
6904 .callback_ops
= &nfs4_get_lease_time_ops
,
6905 .callback_data
= &data
,
6906 .flags
= RPC_TASK_TIMEOUT
,
6910 nfs4_init_sequence(&args
.la_seq_args
, &res
.lr_seq_res
, 0);
6911 nfs4_set_sequence_privileged(&args
.la_seq_args
);
6912 dprintk("--> %s\n", __func__
);
6913 task
= rpc_run_task(&task_setup
);
6916 status
= PTR_ERR(task
);
6918 status
= task
->tk_status
;
6921 dprintk("<-- %s return %d\n", __func__
, status
);
6927 * Initialize the values to be used by the client in CREATE_SESSION
6928 * If nfs4_init_session set the fore channel request and response sizes,
6931 * Set the back channel max_resp_sz_cached to zero to force the client to
6932 * always set csa_cachethis to FALSE because the current implementation
6933 * of the back channel DRC only supports caching the CB_SEQUENCE operation.
6935 static void nfs4_init_channel_attrs(struct nfs41_create_session_args
*args
)
6937 unsigned int max_rqst_sz
, max_resp_sz
;
6939 max_rqst_sz
= NFS_MAX_FILE_IO_SIZE
+ nfs41_maxwrite_overhead
;
6940 max_resp_sz
= NFS_MAX_FILE_IO_SIZE
+ nfs41_maxread_overhead
;
6942 /* Fore channel attributes */
6943 args
->fc_attrs
.max_rqst_sz
= max_rqst_sz
;
6944 args
->fc_attrs
.max_resp_sz
= max_resp_sz
;
6945 args
->fc_attrs
.max_ops
= NFS4_MAX_OPS
;
6946 args
->fc_attrs
.max_reqs
= max_session_slots
;
6948 dprintk("%s: Fore Channel : max_rqst_sz=%u max_resp_sz=%u "
6949 "max_ops=%u max_reqs=%u\n",
6951 args
->fc_attrs
.max_rqst_sz
, args
->fc_attrs
.max_resp_sz
,
6952 args
->fc_attrs
.max_ops
, args
->fc_attrs
.max_reqs
);
6954 /* Back channel attributes */
6955 args
->bc_attrs
.max_rqst_sz
= PAGE_SIZE
;
6956 args
->bc_attrs
.max_resp_sz
= PAGE_SIZE
;
6957 args
->bc_attrs
.max_resp_sz_cached
= 0;
6958 args
->bc_attrs
.max_ops
= NFS4_MAX_BACK_CHANNEL_OPS
;
6959 args
->bc_attrs
.max_reqs
= 1;
6961 dprintk("%s: Back Channel : max_rqst_sz=%u max_resp_sz=%u "
6962 "max_resp_sz_cached=%u max_ops=%u max_reqs=%u\n",
6964 args
->bc_attrs
.max_rqst_sz
, args
->bc_attrs
.max_resp_sz
,
6965 args
->bc_attrs
.max_resp_sz_cached
, args
->bc_attrs
.max_ops
,
6966 args
->bc_attrs
.max_reqs
);
6969 static int nfs4_verify_fore_channel_attrs(struct nfs41_create_session_args
*args
, struct nfs4_session
*session
)
6971 struct nfs4_channel_attrs
*sent
= &args
->fc_attrs
;
6972 struct nfs4_channel_attrs
*rcvd
= &session
->fc_attrs
;
6974 if (rcvd
->max_resp_sz
> sent
->max_resp_sz
)
6977 * Our requested max_ops is the minimum we need; we're not
6978 * prepared to break up compounds into smaller pieces than that.
6979 * So, no point even trying to continue if the server won't
6982 if (rcvd
->max_ops
< sent
->max_ops
)
6984 if (rcvd
->max_reqs
== 0)
6986 if (rcvd
->max_reqs
> NFS4_MAX_SLOT_TABLE
)
6987 rcvd
->max_reqs
= NFS4_MAX_SLOT_TABLE
;
6991 static int nfs4_verify_back_channel_attrs(struct nfs41_create_session_args
*args
, struct nfs4_session
*session
)
6993 struct nfs4_channel_attrs
*sent
= &args
->bc_attrs
;
6994 struct nfs4_channel_attrs
*rcvd
= &session
->bc_attrs
;
6996 if (rcvd
->max_rqst_sz
> sent
->max_rqst_sz
)
6998 if (rcvd
->max_resp_sz
< sent
->max_resp_sz
)
7000 if (rcvd
->max_resp_sz_cached
> sent
->max_resp_sz_cached
)
7002 /* These would render the backchannel useless: */
7003 if (rcvd
->max_ops
!= sent
->max_ops
)
7005 if (rcvd
->max_reqs
!= sent
->max_reqs
)
7010 static int nfs4_verify_channel_attrs(struct nfs41_create_session_args
*args
,
7011 struct nfs4_session
*session
)
7015 ret
= nfs4_verify_fore_channel_attrs(args
, session
);
7018 return nfs4_verify_back_channel_attrs(args
, session
);
7021 static int _nfs4_proc_create_session(struct nfs_client
*clp
,
7022 struct rpc_cred
*cred
)
7024 struct nfs4_session
*session
= clp
->cl_session
;
7025 struct nfs41_create_session_args args
= {
7027 .cb_program
= NFS4_CALLBACK
,
7029 struct nfs41_create_session_res res
= {
7032 struct rpc_message msg
= {
7033 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_CREATE_SESSION
],
7040 nfs4_init_channel_attrs(&args
);
7041 args
.flags
= (SESSION4_PERSIST
| SESSION4_BACK_CHAN
);
7043 status
= rpc_call_sync(session
->clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
7044 trace_nfs4_create_session(clp
, status
);
7047 /* Verify the session's negotiated channel_attrs values */
7048 status
= nfs4_verify_channel_attrs(&args
, session
);
7049 /* Increment the clientid slot sequence id */
7057 * Issues a CREATE_SESSION operation to the server.
7058 * It is the responsibility of the caller to verify the session is
7059 * expired before calling this routine.
7061 int nfs4_proc_create_session(struct nfs_client
*clp
, struct rpc_cred
*cred
)
7065 struct nfs4_session
*session
= clp
->cl_session
;
7067 dprintk("--> %s clp=%p session=%p\n", __func__
, clp
, session
);
7069 status
= _nfs4_proc_create_session(clp
, cred
);
7073 /* Init or reset the session slot tables */
7074 status
= nfs4_setup_session_slot_tables(session
);
7075 dprintk("slot table setup returned %d\n", status
);
7079 ptr
= (unsigned *)&session
->sess_id
.data
[0];
7080 dprintk("%s client>seqid %d sessionid %u:%u:%u:%u\n", __func__
,
7081 clp
->cl_seqid
, ptr
[0], ptr
[1], ptr
[2], ptr
[3]);
7083 dprintk("<-- %s\n", __func__
);
7088 * Issue the over-the-wire RPC DESTROY_SESSION.
7089 * The caller must serialize access to this routine.
7091 int nfs4_proc_destroy_session(struct nfs4_session
*session
,
7092 struct rpc_cred
*cred
)
7094 struct rpc_message msg
= {
7095 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_DESTROY_SESSION
],
7096 .rpc_argp
= session
,
7101 dprintk("--> nfs4_proc_destroy_session\n");
7103 /* session is still being setup */
7104 if (session
->clp
->cl_cons_state
!= NFS_CS_READY
)
7107 status
= rpc_call_sync(session
->clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
7108 trace_nfs4_destroy_session(session
->clp
, status
);
7111 dprintk("NFS: Got error %d from the server on DESTROY_SESSION. "
7112 "Session has been destroyed regardless...\n", status
);
7114 dprintk("<-- nfs4_proc_destroy_session\n");
7119 * Renew the cl_session lease.
7121 struct nfs4_sequence_data
{
7122 struct nfs_client
*clp
;
7123 struct nfs4_sequence_args args
;
7124 struct nfs4_sequence_res res
;
7127 static void nfs41_sequence_release(void *data
)
7129 struct nfs4_sequence_data
*calldata
= data
;
7130 struct nfs_client
*clp
= calldata
->clp
;
7132 if (atomic_read(&clp
->cl_count
) > 1)
7133 nfs4_schedule_state_renewal(clp
);
7134 nfs_put_client(clp
);
7138 static int nfs41_sequence_handle_errors(struct rpc_task
*task
, struct nfs_client
*clp
)
7140 switch(task
->tk_status
) {
7141 case -NFS4ERR_DELAY
:
7142 rpc_delay(task
, NFS4_POLL_RETRY_MAX
);
7145 nfs4_schedule_lease_recovery(clp
);
7150 static void nfs41_sequence_call_done(struct rpc_task
*task
, void *data
)
7152 struct nfs4_sequence_data
*calldata
= data
;
7153 struct nfs_client
*clp
= calldata
->clp
;
7155 if (!nfs41_sequence_done(task
, task
->tk_msg
.rpc_resp
))
7158 trace_nfs4_sequence(clp
, task
->tk_status
);
7159 if (task
->tk_status
< 0) {
7160 dprintk("%s ERROR %d\n", __func__
, task
->tk_status
);
7161 if (atomic_read(&clp
->cl_count
) == 1)
7164 if (nfs41_sequence_handle_errors(task
, clp
) == -EAGAIN
) {
7165 rpc_restart_call_prepare(task
);
7169 dprintk("%s rpc_cred %p\n", __func__
, task
->tk_msg
.rpc_cred
);
7171 dprintk("<-- %s\n", __func__
);
7174 static void nfs41_sequence_prepare(struct rpc_task
*task
, void *data
)
7176 struct nfs4_sequence_data
*calldata
= data
;
7177 struct nfs_client
*clp
= calldata
->clp
;
7178 struct nfs4_sequence_args
*args
;
7179 struct nfs4_sequence_res
*res
;
7181 args
= task
->tk_msg
.rpc_argp
;
7182 res
= task
->tk_msg
.rpc_resp
;
7184 nfs41_setup_sequence(clp
->cl_session
, args
, res
, task
);
7187 static const struct rpc_call_ops nfs41_sequence_ops
= {
7188 .rpc_call_done
= nfs41_sequence_call_done
,
7189 .rpc_call_prepare
= nfs41_sequence_prepare
,
7190 .rpc_release
= nfs41_sequence_release
,
7193 static struct rpc_task
*_nfs41_proc_sequence(struct nfs_client
*clp
,
7194 struct rpc_cred
*cred
,
7197 struct nfs4_sequence_data
*calldata
;
7198 struct rpc_message msg
= {
7199 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SEQUENCE
],
7202 struct rpc_task_setup task_setup_data
= {
7203 .rpc_client
= clp
->cl_rpcclient
,
7204 .rpc_message
= &msg
,
7205 .callback_ops
= &nfs41_sequence_ops
,
7206 .flags
= RPC_TASK_ASYNC
| RPC_TASK_TIMEOUT
,
7209 if (!atomic_inc_not_zero(&clp
->cl_count
))
7210 return ERR_PTR(-EIO
);
7211 calldata
= kzalloc(sizeof(*calldata
), GFP_NOFS
);
7212 if (calldata
== NULL
) {
7213 nfs_put_client(clp
);
7214 return ERR_PTR(-ENOMEM
);
7216 nfs4_init_sequence(&calldata
->args
, &calldata
->res
, 0);
7218 nfs4_set_sequence_privileged(&calldata
->args
);
7219 msg
.rpc_argp
= &calldata
->args
;
7220 msg
.rpc_resp
= &calldata
->res
;
7221 calldata
->clp
= clp
;
7222 task_setup_data
.callback_data
= calldata
;
7224 return rpc_run_task(&task_setup_data
);
7227 static int nfs41_proc_async_sequence(struct nfs_client
*clp
, struct rpc_cred
*cred
, unsigned renew_flags
)
7229 struct rpc_task
*task
;
7232 if ((renew_flags
& NFS4_RENEW_TIMEOUT
) == 0)
7234 task
= _nfs41_proc_sequence(clp
, cred
, false);
7236 ret
= PTR_ERR(task
);
7238 rpc_put_task_async(task
);
7239 dprintk("<-- %s status=%d\n", __func__
, ret
);
7243 static int nfs4_proc_sequence(struct nfs_client
*clp
, struct rpc_cred
*cred
)
7245 struct rpc_task
*task
;
7248 task
= _nfs41_proc_sequence(clp
, cred
, true);
7250 ret
= PTR_ERR(task
);
7253 ret
= rpc_wait_for_completion_task(task
);
7255 struct nfs4_sequence_res
*res
= task
->tk_msg
.rpc_resp
;
7257 if (task
->tk_status
== 0)
7258 nfs41_handle_sequence_flag_errors(clp
, res
->sr_status_flags
);
7259 ret
= task
->tk_status
;
7263 dprintk("<-- %s status=%d\n", __func__
, ret
);
7267 struct nfs4_reclaim_complete_data
{
7268 struct nfs_client
*clp
;
7269 struct nfs41_reclaim_complete_args arg
;
7270 struct nfs41_reclaim_complete_res res
;
7273 static void nfs4_reclaim_complete_prepare(struct rpc_task
*task
, void *data
)
7275 struct nfs4_reclaim_complete_data
*calldata
= data
;
7277 nfs41_setup_sequence(calldata
->clp
->cl_session
,
7278 &calldata
->arg
.seq_args
,
7279 &calldata
->res
.seq_res
,
7283 static int nfs41_reclaim_complete_handle_errors(struct rpc_task
*task
, struct nfs_client
*clp
)
7285 switch(task
->tk_status
) {
7287 case -NFS4ERR_COMPLETE_ALREADY
:
7288 case -NFS4ERR_WRONG_CRED
: /* What to do here? */
7290 case -NFS4ERR_DELAY
:
7291 rpc_delay(task
, NFS4_POLL_RETRY_MAX
);
7293 case -NFS4ERR_RETRY_UNCACHED_REP
:
7296 nfs4_schedule_lease_recovery(clp
);
7301 static void nfs4_reclaim_complete_done(struct rpc_task
*task
, void *data
)
7303 struct nfs4_reclaim_complete_data
*calldata
= data
;
7304 struct nfs_client
*clp
= calldata
->clp
;
7305 struct nfs4_sequence_res
*res
= &calldata
->res
.seq_res
;
7307 dprintk("--> %s\n", __func__
);
7308 if (!nfs41_sequence_done(task
, res
))
7311 trace_nfs4_reclaim_complete(clp
, task
->tk_status
);
7312 if (nfs41_reclaim_complete_handle_errors(task
, clp
) == -EAGAIN
) {
7313 rpc_restart_call_prepare(task
);
7316 dprintk("<-- %s\n", __func__
);
7319 static void nfs4_free_reclaim_complete_data(void *data
)
7321 struct nfs4_reclaim_complete_data
*calldata
= data
;
7326 static const struct rpc_call_ops nfs4_reclaim_complete_call_ops
= {
7327 .rpc_call_prepare
= nfs4_reclaim_complete_prepare
,
7328 .rpc_call_done
= nfs4_reclaim_complete_done
,
7329 .rpc_release
= nfs4_free_reclaim_complete_data
,
7333 * Issue a global reclaim complete.
7335 static int nfs41_proc_reclaim_complete(struct nfs_client
*clp
,
7336 struct rpc_cred
*cred
)
7338 struct nfs4_reclaim_complete_data
*calldata
;
7339 struct rpc_task
*task
;
7340 struct rpc_message msg
= {
7341 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RECLAIM_COMPLETE
],
7344 struct rpc_task_setup task_setup_data
= {
7345 .rpc_client
= clp
->cl_rpcclient
,
7346 .rpc_message
= &msg
,
7347 .callback_ops
= &nfs4_reclaim_complete_call_ops
,
7348 .flags
= RPC_TASK_ASYNC
,
7350 int status
= -ENOMEM
;
7352 dprintk("--> %s\n", __func__
);
7353 calldata
= kzalloc(sizeof(*calldata
), GFP_NOFS
);
7354 if (calldata
== NULL
)
7356 calldata
->clp
= clp
;
7357 calldata
->arg
.one_fs
= 0;
7359 nfs4_init_sequence(&calldata
->arg
.seq_args
, &calldata
->res
.seq_res
, 0);
7360 nfs4_set_sequence_privileged(&calldata
->arg
.seq_args
);
7361 msg
.rpc_argp
= &calldata
->arg
;
7362 msg
.rpc_resp
= &calldata
->res
;
7363 task_setup_data
.callback_data
= calldata
;
7364 task
= rpc_run_task(&task_setup_data
);
7366 status
= PTR_ERR(task
);
7369 status
= nfs4_wait_for_completion_rpc_task(task
);
7371 status
= task
->tk_status
;
7375 dprintk("<-- %s status=%d\n", __func__
, status
);
7380 nfs4_layoutget_prepare(struct rpc_task
*task
, void *calldata
)
7382 struct nfs4_layoutget
*lgp
= calldata
;
7383 struct nfs_server
*server
= NFS_SERVER(lgp
->args
.inode
);
7384 struct nfs4_session
*session
= nfs4_get_session(server
);
7386 dprintk("--> %s\n", __func__
);
7387 /* Note the is a race here, where a CB_LAYOUTRECALL can come in
7388 * right now covering the LAYOUTGET we are about to send.
7389 * However, that is not so catastrophic, and there seems
7390 * to be no way to prevent it completely.
7392 if (nfs41_setup_sequence(session
, &lgp
->args
.seq_args
,
7393 &lgp
->res
.seq_res
, task
))
7395 if (pnfs_choose_layoutget_stateid(&lgp
->args
.stateid
,
7396 NFS_I(lgp
->args
.inode
)->layout
,
7397 lgp
->args
.ctx
->state
)) {
7398 rpc_exit(task
, NFS4_OK
);
7402 static void nfs4_layoutget_done(struct rpc_task
*task
, void *calldata
)
7404 struct nfs4_layoutget
*lgp
= calldata
;
7405 struct inode
*inode
= lgp
->args
.inode
;
7406 struct nfs_server
*server
= NFS_SERVER(inode
);
7407 struct pnfs_layout_hdr
*lo
;
7408 struct nfs4_state
*state
= NULL
;
7409 unsigned long timeo
, now
, giveup
;
7411 dprintk("--> %s tk_status => %d\n", __func__
, -task
->tk_status
);
7413 if (!nfs41_sequence_done(task
, &lgp
->res
.seq_res
))
7416 switch (task
->tk_status
) {
7420 * NFS4ERR_LAYOUTTRYLATER is a conflict with another client
7421 * (or clients) writing to the same RAID stripe
7423 case -NFS4ERR_LAYOUTTRYLATER
:
7425 * NFS4ERR_RECALLCONFLICT is when conflict with self (must recall
7426 * existing layout before getting a new one).
7428 case -NFS4ERR_RECALLCONFLICT
:
7429 timeo
= rpc_get_timeout(task
->tk_client
);
7430 giveup
= lgp
->args
.timestamp
+ timeo
;
7432 if (time_after(giveup
, now
)) {
7433 unsigned long delay
;
7436 * - Not less then NFS4_POLL_RETRY_MIN.
7437 * - One last time a jiffie before we give up
7438 * - exponential backoff (time_now minus start_attempt)
7440 delay
= max_t(unsigned long, NFS4_POLL_RETRY_MIN
,
7441 min((giveup
- now
- 1),
7442 now
- lgp
->args
.timestamp
));
7444 dprintk("%s: NFS4ERR_RECALLCONFLICT waiting %lu\n",
7446 rpc_delay(task
, delay
);
7447 task
->tk_status
= 0;
7448 rpc_restart_call_prepare(task
);
7449 goto out
; /* Do not call nfs4_async_handle_error() */
7452 case -NFS4ERR_EXPIRED
:
7453 case -NFS4ERR_BAD_STATEID
:
7454 spin_lock(&inode
->i_lock
);
7455 lo
= NFS_I(inode
)->layout
;
7456 if (!lo
|| list_empty(&lo
->plh_segs
)) {
7457 spin_unlock(&inode
->i_lock
);
7458 /* If the open stateid was bad, then recover it. */
7459 state
= lgp
->args
.ctx
->state
;
7463 pnfs_mark_matching_lsegs_invalid(lo
, &head
, NULL
);
7464 spin_unlock(&inode
->i_lock
);
7465 /* Mark the bad layout state as invalid, then
7466 * retry using the open stateid. */
7467 pnfs_free_lseg_list(&head
);
7470 if (nfs4_async_handle_error(task
, server
, state
) == -EAGAIN
)
7471 rpc_restart_call_prepare(task
);
7473 dprintk("<-- %s\n", __func__
);
7476 static size_t max_response_pages(struct nfs_server
*server
)
7478 u32 max_resp_sz
= server
->nfs_client
->cl_session
->fc_attrs
.max_resp_sz
;
7479 return nfs_page_array_len(0, max_resp_sz
);
7482 static void nfs4_free_pages(struct page
**pages
, size_t size
)
7489 for (i
= 0; i
< size
; i
++) {
7492 __free_page(pages
[i
]);
7497 static struct page
**nfs4_alloc_pages(size_t size
, gfp_t gfp_flags
)
7499 struct page
**pages
;
7502 pages
= kcalloc(size
, sizeof(struct page
*), gfp_flags
);
7504 dprintk("%s: can't alloc array of %zu pages\n", __func__
, size
);
7508 for (i
= 0; i
< size
; i
++) {
7509 pages
[i
] = alloc_page(gfp_flags
);
7511 dprintk("%s: failed to allocate page\n", __func__
);
7512 nfs4_free_pages(pages
, size
);
7520 static void nfs4_layoutget_release(void *calldata
)
7522 struct nfs4_layoutget
*lgp
= calldata
;
7523 struct inode
*inode
= lgp
->args
.inode
;
7524 struct nfs_server
*server
= NFS_SERVER(inode
);
7525 size_t max_pages
= max_response_pages(server
);
7527 dprintk("--> %s\n", __func__
);
7528 nfs4_free_pages(lgp
->args
.layout
.pages
, max_pages
);
7529 pnfs_put_layout_hdr(NFS_I(inode
)->layout
);
7530 put_nfs_open_context(lgp
->args
.ctx
);
7532 dprintk("<-- %s\n", __func__
);
7535 static const struct rpc_call_ops nfs4_layoutget_call_ops
= {
7536 .rpc_call_prepare
= nfs4_layoutget_prepare
,
7537 .rpc_call_done
= nfs4_layoutget_done
,
7538 .rpc_release
= nfs4_layoutget_release
,
7541 struct pnfs_layout_segment
*
7542 nfs4_proc_layoutget(struct nfs4_layoutget
*lgp
, gfp_t gfp_flags
)
7544 struct inode
*inode
= lgp
->args
.inode
;
7545 struct nfs_server
*server
= NFS_SERVER(inode
);
7546 size_t max_pages
= max_response_pages(server
);
7547 struct rpc_task
*task
;
7548 struct rpc_message msg
= {
7549 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LAYOUTGET
],
7550 .rpc_argp
= &lgp
->args
,
7551 .rpc_resp
= &lgp
->res
,
7552 .rpc_cred
= lgp
->cred
,
7554 struct rpc_task_setup task_setup_data
= {
7555 .rpc_client
= server
->client
,
7556 .rpc_message
= &msg
,
7557 .callback_ops
= &nfs4_layoutget_call_ops
,
7558 .callback_data
= lgp
,
7559 .flags
= RPC_TASK_ASYNC
,
7561 struct pnfs_layout_segment
*lseg
= NULL
;
7564 dprintk("--> %s\n", __func__
);
7566 lgp
->args
.layout
.pages
= nfs4_alloc_pages(max_pages
, gfp_flags
);
7567 if (!lgp
->args
.layout
.pages
) {
7568 nfs4_layoutget_release(lgp
);
7569 return ERR_PTR(-ENOMEM
);
7571 lgp
->args
.layout
.pglen
= max_pages
* PAGE_SIZE
;
7572 lgp
->args
.timestamp
= jiffies
;
7574 lgp
->res
.layoutp
= &lgp
->args
.layout
;
7575 lgp
->res
.seq_res
.sr_slot
= NULL
;
7576 nfs4_init_sequence(&lgp
->args
.seq_args
, &lgp
->res
.seq_res
, 0);
7578 /* nfs4_layoutget_release calls pnfs_put_layout_hdr */
7579 pnfs_get_layout_hdr(NFS_I(inode
)->layout
);
7581 task
= rpc_run_task(&task_setup_data
);
7583 return ERR_CAST(task
);
7584 status
= nfs4_wait_for_completion_rpc_task(task
);
7586 status
= task
->tk_status
;
7587 trace_nfs4_layoutget(lgp
->args
.ctx
,
7591 /* if layoutp->len is 0, nfs4_layoutget_prepare called rpc_exit */
7592 if (status
== 0 && lgp
->res
.layoutp
->len
)
7593 lseg
= pnfs_layout_process(lgp
);
7595 dprintk("<-- %s status=%d\n", __func__
, status
);
7597 return ERR_PTR(status
);
7602 nfs4_layoutreturn_prepare(struct rpc_task
*task
, void *calldata
)
7604 struct nfs4_layoutreturn
*lrp
= calldata
;
7606 dprintk("--> %s\n", __func__
);
7607 nfs41_setup_sequence(lrp
->clp
->cl_session
,
7608 &lrp
->args
.seq_args
,
7613 static void nfs4_layoutreturn_done(struct rpc_task
*task
, void *calldata
)
7615 struct nfs4_layoutreturn
*lrp
= calldata
;
7616 struct nfs_server
*server
;
7618 dprintk("--> %s\n", __func__
);
7620 if (!nfs41_sequence_done(task
, &lrp
->res
.seq_res
))
7623 server
= NFS_SERVER(lrp
->args
.inode
);
7624 switch (task
->tk_status
) {
7626 task
->tk_status
= 0;
7629 case -NFS4ERR_DELAY
:
7630 if (nfs4_async_handle_error(task
, server
, NULL
) != -EAGAIN
)
7632 rpc_restart_call_prepare(task
);
7635 dprintk("<-- %s\n", __func__
);
7638 static void nfs4_layoutreturn_release(void *calldata
)
7640 struct nfs4_layoutreturn
*lrp
= calldata
;
7641 struct pnfs_layout_hdr
*lo
= lrp
->args
.layout
;
7643 dprintk("--> %s\n", __func__
);
7644 spin_lock(&lo
->plh_inode
->i_lock
);
7645 if (lrp
->res
.lrs_present
)
7646 pnfs_set_layout_stateid(lo
, &lrp
->res
.stateid
, true);
7647 lo
->plh_block_lgets
--;
7648 spin_unlock(&lo
->plh_inode
->i_lock
);
7649 pnfs_put_layout_hdr(lrp
->args
.layout
);
7651 dprintk("<-- %s\n", __func__
);
7654 static const struct rpc_call_ops nfs4_layoutreturn_call_ops
= {
7655 .rpc_call_prepare
= nfs4_layoutreturn_prepare
,
7656 .rpc_call_done
= nfs4_layoutreturn_done
,
7657 .rpc_release
= nfs4_layoutreturn_release
,
7660 int nfs4_proc_layoutreturn(struct nfs4_layoutreturn
*lrp
)
7662 struct rpc_task
*task
;
7663 struct rpc_message msg
= {
7664 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LAYOUTRETURN
],
7665 .rpc_argp
= &lrp
->args
,
7666 .rpc_resp
= &lrp
->res
,
7667 .rpc_cred
= lrp
->cred
,
7669 struct rpc_task_setup task_setup_data
= {
7670 .rpc_client
= NFS_SERVER(lrp
->args
.inode
)->client
,
7671 .rpc_message
= &msg
,
7672 .callback_ops
= &nfs4_layoutreturn_call_ops
,
7673 .callback_data
= lrp
,
7677 dprintk("--> %s\n", __func__
);
7678 nfs4_init_sequence(&lrp
->args
.seq_args
, &lrp
->res
.seq_res
, 1);
7679 task
= rpc_run_task(&task_setup_data
);
7681 return PTR_ERR(task
);
7682 status
= task
->tk_status
;
7683 trace_nfs4_layoutreturn(lrp
->args
.inode
, status
);
7684 dprintk("<-- %s status=%d\n", __func__
, status
);
7690 * Retrieve the list of Data Server devices from the MDS.
7692 static int _nfs4_getdevicelist(struct nfs_server
*server
,
7693 const struct nfs_fh
*fh
,
7694 struct pnfs_devicelist
*devlist
)
7696 struct nfs4_getdevicelist_args args
= {
7698 .layoutclass
= server
->pnfs_curr_ld
->id
,
7700 struct nfs4_getdevicelist_res res
= {
7703 struct rpc_message msg
= {
7704 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GETDEVICELIST
],
7710 dprintk("--> %s\n", __func__
);
7711 status
= nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
,
7713 dprintk("<-- %s status=%d\n", __func__
, status
);
7717 int nfs4_proc_getdevicelist(struct nfs_server
*server
,
7718 const struct nfs_fh
*fh
,
7719 struct pnfs_devicelist
*devlist
)
7721 struct nfs4_exception exception
= { };
7725 err
= nfs4_handle_exception(server
,
7726 _nfs4_getdevicelist(server
, fh
, devlist
),
7728 } while (exception
.retry
);
7730 dprintk("%s: err=%d, num_devs=%u\n", __func__
,
7731 err
, devlist
->num_devs
);
7735 EXPORT_SYMBOL_GPL(nfs4_proc_getdevicelist
);
7738 _nfs4_proc_getdeviceinfo(struct nfs_server
*server
,
7739 struct pnfs_device
*pdev
,
7740 struct rpc_cred
*cred
)
7742 struct nfs4_getdeviceinfo_args args
= {
7745 struct nfs4_getdeviceinfo_res res
= {
7748 struct rpc_message msg
= {
7749 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GETDEVICEINFO
],
7756 dprintk("--> %s\n", __func__
);
7757 status
= nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
7758 dprintk("<-- %s status=%d\n", __func__
, status
);
7763 int nfs4_proc_getdeviceinfo(struct nfs_server
*server
,
7764 struct pnfs_device
*pdev
,
7765 struct rpc_cred
*cred
)
7767 struct nfs4_exception exception
= { };
7771 err
= nfs4_handle_exception(server
,
7772 _nfs4_proc_getdeviceinfo(server
, pdev
, cred
),
7774 } while (exception
.retry
);
7777 EXPORT_SYMBOL_GPL(nfs4_proc_getdeviceinfo
);
7779 static void nfs4_layoutcommit_prepare(struct rpc_task
*task
, void *calldata
)
7781 struct nfs4_layoutcommit_data
*data
= calldata
;
7782 struct nfs_server
*server
= NFS_SERVER(data
->args
.inode
);
7783 struct nfs4_session
*session
= nfs4_get_session(server
);
7785 nfs41_setup_sequence(session
,
7786 &data
->args
.seq_args
,
7792 nfs4_layoutcommit_done(struct rpc_task
*task
, void *calldata
)
7794 struct nfs4_layoutcommit_data
*data
= calldata
;
7795 struct nfs_server
*server
= NFS_SERVER(data
->args
.inode
);
7797 if (!nfs41_sequence_done(task
, &data
->res
.seq_res
))
7800 switch (task
->tk_status
) { /* Just ignore these failures */
7801 case -NFS4ERR_DELEG_REVOKED
: /* layout was recalled */
7802 case -NFS4ERR_BADIOMODE
: /* no IOMODE_RW layout for range */
7803 case -NFS4ERR_BADLAYOUT
: /* no layout */
7804 case -NFS4ERR_GRACE
: /* loca_recalim always false */
7805 task
->tk_status
= 0;
7809 if (nfs4_async_handle_error(task
, server
, NULL
) == -EAGAIN
) {
7810 rpc_restart_call_prepare(task
);
7816 static void nfs4_layoutcommit_release(void *calldata
)
7818 struct nfs4_layoutcommit_data
*data
= calldata
;
7820 pnfs_cleanup_layoutcommit(data
);
7821 nfs_post_op_update_inode_force_wcc(data
->args
.inode
,
7823 put_rpccred(data
->cred
);
7827 static const struct rpc_call_ops nfs4_layoutcommit_ops
= {
7828 .rpc_call_prepare
= nfs4_layoutcommit_prepare
,
7829 .rpc_call_done
= nfs4_layoutcommit_done
,
7830 .rpc_release
= nfs4_layoutcommit_release
,
7834 nfs4_proc_layoutcommit(struct nfs4_layoutcommit_data
*data
, bool sync
)
7836 struct rpc_message msg
= {
7837 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LAYOUTCOMMIT
],
7838 .rpc_argp
= &data
->args
,
7839 .rpc_resp
= &data
->res
,
7840 .rpc_cred
= data
->cred
,
7842 struct rpc_task_setup task_setup_data
= {
7843 .task
= &data
->task
,
7844 .rpc_client
= NFS_CLIENT(data
->args
.inode
),
7845 .rpc_message
= &msg
,
7846 .callback_ops
= &nfs4_layoutcommit_ops
,
7847 .callback_data
= data
,
7848 .flags
= RPC_TASK_ASYNC
,
7850 struct rpc_task
*task
;
7853 dprintk("NFS: %4d initiating layoutcommit call. sync %d "
7854 "lbw: %llu inode %lu\n",
7855 data
->task
.tk_pid
, sync
,
7856 data
->args
.lastbytewritten
,
7857 data
->args
.inode
->i_ino
);
7859 nfs4_init_sequence(&data
->args
.seq_args
, &data
->res
.seq_res
, 1);
7860 task
= rpc_run_task(&task_setup_data
);
7862 return PTR_ERR(task
);
7865 status
= nfs4_wait_for_completion_rpc_task(task
);
7868 status
= task
->tk_status
;
7869 trace_nfs4_layoutcommit(data
->args
.inode
, status
);
7871 dprintk("%s: status %d\n", __func__
, status
);
7877 * Use the state managment nfs_client cl_rpcclient, which uses krb5i (if
7878 * possible) as per RFC3530bis and RFC5661 Security Considerations sections
7881 _nfs41_proc_secinfo_no_name(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
7882 struct nfs_fsinfo
*info
,
7883 struct nfs4_secinfo_flavors
*flavors
, bool use_integrity
)
7885 struct nfs41_secinfo_no_name_args args
= {
7886 .style
= SECINFO_STYLE_CURRENT_FH
,
7888 struct nfs4_secinfo_res res
= {
7891 struct rpc_message msg
= {
7892 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SECINFO_NO_NAME
],
7896 struct rpc_clnt
*clnt
= server
->client
;
7897 struct rpc_cred
*cred
= NULL
;
7900 if (use_integrity
) {
7901 clnt
= server
->nfs_client
->cl_rpcclient
;
7902 cred
= nfs4_get_clid_cred(server
->nfs_client
);
7903 msg
.rpc_cred
= cred
;
7906 dprintk("--> %s\n", __func__
);
7907 status
= nfs4_call_sync(clnt
, server
, &msg
, &args
.seq_args
,
7909 dprintk("<-- %s status=%d\n", __func__
, status
);
7918 nfs41_proc_secinfo_no_name(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
7919 struct nfs_fsinfo
*info
, struct nfs4_secinfo_flavors
*flavors
)
7921 struct nfs4_exception exception
= { };
7924 /* first try using integrity protection */
7925 err
= -NFS4ERR_WRONGSEC
;
7927 /* try to use integrity protection with machine cred */
7928 if (_nfs4_is_integrity_protected(server
->nfs_client
))
7929 err
= _nfs41_proc_secinfo_no_name(server
, fhandle
, info
,
7933 * if unable to use integrity protection, or SECINFO with
7934 * integrity protection returns NFS4ERR_WRONGSEC (which is
7935 * disallowed by spec, but exists in deployed servers) use
7936 * the current filesystem's rpc_client and the user cred.
7938 if (err
== -NFS4ERR_WRONGSEC
)
7939 err
= _nfs41_proc_secinfo_no_name(server
, fhandle
, info
,
7944 case -NFS4ERR_WRONGSEC
:
7948 err
= nfs4_handle_exception(server
, err
, &exception
);
7950 } while (exception
.retry
);
7956 nfs41_find_root_sec(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
7957 struct nfs_fsinfo
*info
)
7961 rpc_authflavor_t flavor
= RPC_AUTH_MAXFLAVOR
;
7962 struct nfs4_secinfo_flavors
*flavors
;
7963 struct nfs4_secinfo4
*secinfo
;
7966 page
= alloc_page(GFP_KERNEL
);
7972 flavors
= page_address(page
);
7973 err
= nfs41_proc_secinfo_no_name(server
, fhandle
, info
, flavors
);
7976 * Fall back on "guess and check" method if
7977 * the server doesn't support SECINFO_NO_NAME
7979 if (err
== -NFS4ERR_WRONGSEC
|| err
== -ENOTSUPP
) {
7980 err
= nfs4_find_root_sec(server
, fhandle
, info
);
7986 for (i
= 0; i
< flavors
->num_flavors
; i
++) {
7987 secinfo
= &flavors
->flavors
[i
];
7989 switch (secinfo
->flavor
) {
7993 flavor
= rpcauth_get_pseudoflavor(secinfo
->flavor
,
7994 &secinfo
->flavor_info
);
7997 flavor
= RPC_AUTH_MAXFLAVOR
;
8001 if (!nfs_auth_info_match(&server
->auth_info
, flavor
))
8002 flavor
= RPC_AUTH_MAXFLAVOR
;
8004 if (flavor
!= RPC_AUTH_MAXFLAVOR
) {
8005 err
= nfs4_lookup_root_sec(server
, fhandle
,
8012 if (flavor
== RPC_AUTH_MAXFLAVOR
)
8023 static int _nfs41_test_stateid(struct nfs_server
*server
,
8024 nfs4_stateid
*stateid
,
8025 struct rpc_cred
*cred
)
8028 struct nfs41_test_stateid_args args
= {
8031 struct nfs41_test_stateid_res res
;
8032 struct rpc_message msg
= {
8033 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_TEST_STATEID
],
8038 struct rpc_clnt
*rpc_client
= server
->client
;
8040 nfs4_state_protect(server
->nfs_client
, NFS_SP4_MACH_CRED_STATEID
,
8043 dprintk("NFS call test_stateid %p\n", stateid
);
8044 nfs4_init_sequence(&args
.seq_args
, &res
.seq_res
, 0);
8045 nfs4_set_sequence_privileged(&args
.seq_args
);
8046 status
= nfs4_call_sync_sequence(rpc_client
, server
, &msg
,
8047 &args
.seq_args
, &res
.seq_res
);
8048 if (status
!= NFS_OK
) {
8049 dprintk("NFS reply test_stateid: failed, %d\n", status
);
8052 dprintk("NFS reply test_stateid: succeeded, %d\n", -res
.status
);
8057 * nfs41_test_stateid - perform a TEST_STATEID operation
8059 * @server: server / transport on which to perform the operation
8060 * @stateid: state ID to test
8063 * Returns NFS_OK if the server recognizes that "stateid" is valid.
8064 * Otherwise a negative NFS4ERR value is returned if the operation
8065 * failed or the state ID is not currently valid.
8067 static int nfs41_test_stateid(struct nfs_server
*server
,
8068 nfs4_stateid
*stateid
,
8069 struct rpc_cred
*cred
)
8071 struct nfs4_exception exception
= { };
8074 err
= _nfs41_test_stateid(server
, stateid
, cred
);
8075 if (err
!= -NFS4ERR_DELAY
)
8077 nfs4_handle_exception(server
, err
, &exception
);
8078 } while (exception
.retry
);
8082 struct nfs_free_stateid_data
{
8083 struct nfs_server
*server
;
8084 struct nfs41_free_stateid_args args
;
8085 struct nfs41_free_stateid_res res
;
8088 static void nfs41_free_stateid_prepare(struct rpc_task
*task
, void *calldata
)
8090 struct nfs_free_stateid_data
*data
= calldata
;
8091 nfs41_setup_sequence(nfs4_get_session(data
->server
),
8092 &data
->args
.seq_args
,
8097 static void nfs41_free_stateid_done(struct rpc_task
*task
, void *calldata
)
8099 struct nfs_free_stateid_data
*data
= calldata
;
8101 nfs41_sequence_done(task
, &data
->res
.seq_res
);
8103 switch (task
->tk_status
) {
8104 case -NFS4ERR_DELAY
:
8105 if (nfs4_async_handle_error(task
, data
->server
, NULL
) == -EAGAIN
)
8106 rpc_restart_call_prepare(task
);
8110 static void nfs41_free_stateid_release(void *calldata
)
8115 static const struct rpc_call_ops nfs41_free_stateid_ops
= {
8116 .rpc_call_prepare
= nfs41_free_stateid_prepare
,
8117 .rpc_call_done
= nfs41_free_stateid_done
,
8118 .rpc_release
= nfs41_free_stateid_release
,
8121 static struct rpc_task
*_nfs41_free_stateid(struct nfs_server
*server
,
8122 nfs4_stateid
*stateid
,
8123 struct rpc_cred
*cred
,
8126 struct rpc_message msg
= {
8127 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_FREE_STATEID
],
8130 struct rpc_task_setup task_setup
= {
8131 .rpc_client
= server
->client
,
8132 .rpc_message
= &msg
,
8133 .callback_ops
= &nfs41_free_stateid_ops
,
8134 .flags
= RPC_TASK_ASYNC
,
8136 struct nfs_free_stateid_data
*data
;
8138 nfs4_state_protect(server
->nfs_client
, NFS_SP4_MACH_CRED_STATEID
,
8139 &task_setup
.rpc_client
, &msg
);
8141 dprintk("NFS call free_stateid %p\n", stateid
);
8142 data
= kmalloc(sizeof(*data
), GFP_NOFS
);
8144 return ERR_PTR(-ENOMEM
);
8145 data
->server
= server
;
8146 nfs4_stateid_copy(&data
->args
.stateid
, stateid
);
8148 task_setup
.callback_data
= data
;
8150 msg
.rpc_argp
= &data
->args
;
8151 msg
.rpc_resp
= &data
->res
;
8152 nfs4_init_sequence(&data
->args
.seq_args
, &data
->res
.seq_res
, 0);
8154 nfs4_set_sequence_privileged(&data
->args
.seq_args
);
8156 return rpc_run_task(&task_setup
);
8160 * nfs41_free_stateid - perform a FREE_STATEID operation
8162 * @server: server / transport on which to perform the operation
8163 * @stateid: state ID to release
8166 * Returns NFS_OK if the server freed "stateid". Otherwise a
8167 * negative NFS4ERR value is returned.
8169 static int nfs41_free_stateid(struct nfs_server
*server
,
8170 nfs4_stateid
*stateid
,
8171 struct rpc_cred
*cred
)
8173 struct rpc_task
*task
;
8176 task
= _nfs41_free_stateid(server
, stateid
, cred
, true);
8178 return PTR_ERR(task
);
8179 ret
= rpc_wait_for_completion_task(task
);
8181 ret
= task
->tk_status
;
8186 static int nfs41_free_lock_state(struct nfs_server
*server
, struct nfs4_lock_state
*lsp
)
8188 struct rpc_task
*task
;
8189 struct rpc_cred
*cred
= lsp
->ls_state
->owner
->so_cred
;
8191 task
= _nfs41_free_stateid(server
, &lsp
->ls_stateid
, cred
, false);
8192 nfs4_free_lock_state(server
, lsp
);
8194 return PTR_ERR(task
);
8199 static bool nfs41_match_stateid(const nfs4_stateid
*s1
,
8200 const nfs4_stateid
*s2
)
8202 if (memcmp(s1
->other
, s2
->other
, sizeof(s1
->other
)) != 0)
8205 if (s1
->seqid
== s2
->seqid
)
8207 if (s1
->seqid
== 0 || s2
->seqid
== 0)
8213 #endif /* CONFIG_NFS_V4_1 */
8215 static bool nfs4_match_stateid(const nfs4_stateid
*s1
,
8216 const nfs4_stateid
*s2
)
8218 return nfs4_stateid_match(s1
, s2
);
8222 static const struct nfs4_state_recovery_ops nfs40_reboot_recovery_ops
= {
8223 .owner_flag_bit
= NFS_OWNER_RECLAIM_REBOOT
,
8224 .state_flag_bit
= NFS_STATE_RECLAIM_REBOOT
,
8225 .recover_open
= nfs4_open_reclaim
,
8226 .recover_lock
= nfs4_lock_reclaim
,
8227 .establish_clid
= nfs4_init_clientid
,
8228 .detect_trunking
= nfs40_discover_server_trunking
,
8231 #if defined(CONFIG_NFS_V4_1)
8232 static const struct nfs4_state_recovery_ops nfs41_reboot_recovery_ops
= {
8233 .owner_flag_bit
= NFS_OWNER_RECLAIM_REBOOT
,
8234 .state_flag_bit
= NFS_STATE_RECLAIM_REBOOT
,
8235 .recover_open
= nfs4_open_reclaim
,
8236 .recover_lock
= nfs4_lock_reclaim
,
8237 .establish_clid
= nfs41_init_clientid
,
8238 .reclaim_complete
= nfs41_proc_reclaim_complete
,
8239 .detect_trunking
= nfs41_discover_server_trunking
,
8241 #endif /* CONFIG_NFS_V4_1 */
8243 static const struct nfs4_state_recovery_ops nfs40_nograce_recovery_ops
= {
8244 .owner_flag_bit
= NFS_OWNER_RECLAIM_NOGRACE
,
8245 .state_flag_bit
= NFS_STATE_RECLAIM_NOGRACE
,
8246 .recover_open
= nfs4_open_expired
,
8247 .recover_lock
= nfs4_lock_expired
,
8248 .establish_clid
= nfs4_init_clientid
,
8251 #if defined(CONFIG_NFS_V4_1)
8252 static const struct nfs4_state_recovery_ops nfs41_nograce_recovery_ops
= {
8253 .owner_flag_bit
= NFS_OWNER_RECLAIM_NOGRACE
,
8254 .state_flag_bit
= NFS_STATE_RECLAIM_NOGRACE
,
8255 .recover_open
= nfs41_open_expired
,
8256 .recover_lock
= nfs41_lock_expired
,
8257 .establish_clid
= nfs41_init_clientid
,
8259 #endif /* CONFIG_NFS_V4_1 */
8261 static const struct nfs4_state_maintenance_ops nfs40_state_renewal_ops
= {
8262 .sched_state_renewal
= nfs4_proc_async_renew
,
8263 .get_state_renewal_cred_locked
= nfs4_get_renew_cred_locked
,
8264 .renew_lease
= nfs4_proc_renew
,
8267 #if defined(CONFIG_NFS_V4_1)
8268 static const struct nfs4_state_maintenance_ops nfs41_state_renewal_ops
= {
8269 .sched_state_renewal
= nfs41_proc_async_sequence
,
8270 .get_state_renewal_cred_locked
= nfs4_get_machine_cred_locked
,
8271 .renew_lease
= nfs4_proc_sequence
,
8275 static const struct nfs4_mig_recovery_ops nfs40_mig_recovery_ops
= {
8276 .get_locations
= _nfs40_proc_get_locations
,
8277 .fsid_present
= _nfs40_proc_fsid_present
,
8280 #if defined(CONFIG_NFS_V4_1)
8281 static const struct nfs4_mig_recovery_ops nfs41_mig_recovery_ops
= {
8282 .get_locations
= _nfs41_proc_get_locations
,
8283 .fsid_present
= _nfs41_proc_fsid_present
,
8285 #endif /* CONFIG_NFS_V4_1 */
8287 static const struct nfs4_minor_version_ops nfs_v4_0_minor_ops
= {
8289 .init_caps
= NFS_CAP_READDIRPLUS
8290 | NFS_CAP_ATOMIC_OPEN
8291 | NFS_CAP_CHANGE_ATTR
8292 | NFS_CAP_POSIX_LOCK
,
8293 .init_client
= nfs40_init_client
,
8294 .shutdown_client
= nfs40_shutdown_client
,
8295 .match_stateid
= nfs4_match_stateid
,
8296 .find_root_sec
= nfs4_find_root_sec
,
8297 .free_lock_state
= nfs4_release_lockowner
,
8298 .call_sync_ops
= &nfs40_call_sync_ops
,
8299 .reboot_recovery_ops
= &nfs40_reboot_recovery_ops
,
8300 .nograce_recovery_ops
= &nfs40_nograce_recovery_ops
,
8301 .state_renewal_ops
= &nfs40_state_renewal_ops
,
8302 .mig_recovery_ops
= &nfs40_mig_recovery_ops
,
8305 #if defined(CONFIG_NFS_V4_1)
8306 static const struct nfs4_minor_version_ops nfs_v4_1_minor_ops
= {
8308 .init_caps
= NFS_CAP_READDIRPLUS
8309 | NFS_CAP_ATOMIC_OPEN
8310 | NFS_CAP_CHANGE_ATTR
8311 | NFS_CAP_POSIX_LOCK
8312 | NFS_CAP_STATEID_NFSV41
8313 | NFS_CAP_ATOMIC_OPEN_V1
,
8314 .init_client
= nfs41_init_client
,
8315 .shutdown_client
= nfs41_shutdown_client
,
8316 .match_stateid
= nfs41_match_stateid
,
8317 .find_root_sec
= nfs41_find_root_sec
,
8318 .free_lock_state
= nfs41_free_lock_state
,
8319 .call_sync_ops
= &nfs41_call_sync_ops
,
8320 .reboot_recovery_ops
= &nfs41_reboot_recovery_ops
,
8321 .nograce_recovery_ops
= &nfs41_nograce_recovery_ops
,
8322 .state_renewal_ops
= &nfs41_state_renewal_ops
,
8323 .mig_recovery_ops
= &nfs41_mig_recovery_ops
,
8327 #if defined(CONFIG_NFS_V4_2)
8328 static const struct nfs4_minor_version_ops nfs_v4_2_minor_ops
= {
8330 .init_caps
= NFS_CAP_READDIRPLUS
8331 | NFS_CAP_ATOMIC_OPEN
8332 | NFS_CAP_CHANGE_ATTR
8333 | NFS_CAP_POSIX_LOCK
8334 | NFS_CAP_STATEID_NFSV41
8335 | NFS_CAP_ATOMIC_OPEN_V1
,
8336 .init_client
= nfs41_init_client
,
8337 .shutdown_client
= nfs41_shutdown_client
,
8338 .match_stateid
= nfs41_match_stateid
,
8339 .find_root_sec
= nfs41_find_root_sec
,
8340 .free_lock_state
= nfs41_free_lock_state
,
8341 .call_sync_ops
= &nfs41_call_sync_ops
,
8342 .reboot_recovery_ops
= &nfs41_reboot_recovery_ops
,
8343 .nograce_recovery_ops
= &nfs41_nograce_recovery_ops
,
8344 .state_renewal_ops
= &nfs41_state_renewal_ops
,
8348 const struct nfs4_minor_version_ops
*nfs_v4_minor_ops
[] = {
8349 [0] = &nfs_v4_0_minor_ops
,
8350 #if defined(CONFIG_NFS_V4_1)
8351 [1] = &nfs_v4_1_minor_ops
,
8353 #if defined(CONFIG_NFS_V4_2)
8354 [2] = &nfs_v4_2_minor_ops
,
8358 static const struct inode_operations nfs4_dir_inode_operations
= {
8359 .create
= nfs_create
,
8360 .lookup
= nfs_lookup
,
8361 .atomic_open
= nfs_atomic_open
,
8363 .unlink
= nfs_unlink
,
8364 .symlink
= nfs_symlink
,
8368 .rename
= nfs_rename
,
8369 .permission
= nfs_permission
,
8370 .getattr
= nfs_getattr
,
8371 .setattr
= nfs_setattr
,
8372 .getxattr
= generic_getxattr
,
8373 .setxattr
= generic_setxattr
,
8374 .listxattr
= generic_listxattr
,
8375 .removexattr
= generic_removexattr
,
8378 static const struct inode_operations nfs4_file_inode_operations
= {
8379 .permission
= nfs_permission
,
8380 .getattr
= nfs_getattr
,
8381 .setattr
= nfs_setattr
,
8382 .getxattr
= generic_getxattr
,
8383 .setxattr
= generic_setxattr
,
8384 .listxattr
= generic_listxattr
,
8385 .removexattr
= generic_removexattr
,
8388 const struct nfs_rpc_ops nfs_v4_clientops
= {
8389 .version
= 4, /* protocol version */
8390 .dentry_ops
= &nfs4_dentry_operations
,
8391 .dir_inode_ops
= &nfs4_dir_inode_operations
,
8392 .file_inode_ops
= &nfs4_file_inode_operations
,
8393 .file_ops
= &nfs4_file_operations
,
8394 .getroot
= nfs4_proc_get_root
,
8395 .submount
= nfs4_submount
,
8396 .try_mount
= nfs4_try_mount
,
8397 .getattr
= nfs4_proc_getattr
,
8398 .setattr
= nfs4_proc_setattr
,
8399 .lookup
= nfs4_proc_lookup
,
8400 .access
= nfs4_proc_access
,
8401 .readlink
= nfs4_proc_readlink
,
8402 .create
= nfs4_proc_create
,
8403 .remove
= nfs4_proc_remove
,
8404 .unlink_setup
= nfs4_proc_unlink_setup
,
8405 .unlink_rpc_prepare
= nfs4_proc_unlink_rpc_prepare
,
8406 .unlink_done
= nfs4_proc_unlink_done
,
8407 .rename
= nfs4_proc_rename
,
8408 .rename_setup
= nfs4_proc_rename_setup
,
8409 .rename_rpc_prepare
= nfs4_proc_rename_rpc_prepare
,
8410 .rename_done
= nfs4_proc_rename_done
,
8411 .link
= nfs4_proc_link
,
8412 .symlink
= nfs4_proc_symlink
,
8413 .mkdir
= nfs4_proc_mkdir
,
8414 .rmdir
= nfs4_proc_remove
,
8415 .readdir
= nfs4_proc_readdir
,
8416 .mknod
= nfs4_proc_mknod
,
8417 .statfs
= nfs4_proc_statfs
,
8418 .fsinfo
= nfs4_proc_fsinfo
,
8419 .pathconf
= nfs4_proc_pathconf
,
8420 .set_capabilities
= nfs4_server_capabilities
,
8421 .decode_dirent
= nfs4_decode_dirent
,
8422 .read_setup
= nfs4_proc_read_setup
,
8423 .read_pageio_init
= pnfs_pageio_init_read
,
8424 .read_rpc_prepare
= nfs4_proc_read_rpc_prepare
,
8425 .read_done
= nfs4_read_done
,
8426 .write_setup
= nfs4_proc_write_setup
,
8427 .write_pageio_init
= pnfs_pageio_init_write
,
8428 .write_rpc_prepare
= nfs4_proc_write_rpc_prepare
,
8429 .write_done
= nfs4_write_done
,
8430 .commit_setup
= nfs4_proc_commit_setup
,
8431 .commit_rpc_prepare
= nfs4_proc_commit_rpc_prepare
,
8432 .commit_done
= nfs4_commit_done
,
8433 .lock
= nfs4_proc_lock
,
8434 .clear_acl_cache
= nfs4_zap_acl_attr
,
8435 .close_context
= nfs4_close_context
,
8436 .open_context
= nfs4_atomic_open
,
8437 .have_delegation
= nfs4_have_delegation
,
8438 .return_delegation
= nfs4_inode_return_delegation
,
8439 .alloc_client
= nfs4_alloc_client
,
8440 .init_client
= nfs4_init_client
,
8441 .free_client
= nfs4_free_client
,
8442 .create_server
= nfs4_create_server
,
8443 .clone_server
= nfs_clone_server
,
8446 static const struct xattr_handler nfs4_xattr_nfs4_acl_handler
= {
8447 .prefix
= XATTR_NAME_NFSV4_ACL
,
8448 .list
= nfs4_xattr_list_nfs4_acl
,
8449 .get
= nfs4_xattr_get_nfs4_acl
,
8450 .set
= nfs4_xattr_set_nfs4_acl
,
8453 const struct xattr_handler
*nfs4_xattr_handlers
[] = {
8454 &nfs4_xattr_nfs4_acl_handler
,
8455 #ifdef CONFIG_NFS_V4_SECURITY_LABEL
8456 &nfs4_xattr_nfs4_label_handler
,