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 if (NFS_SERVER(dir
)->nfs_client
->cl_minorversion
< 2)
111 err
= security_dentry_init_security(dentry
, sattr
->ia_mode
,
112 &dentry
->d_name
, (void **)&label
->label
, &label
->len
);
119 nfs4_label_release_security(struct nfs4_label
*label
)
122 security_release_secctx(label
->label
, label
->len
);
124 static inline u32
*nfs4_bitmask(struct nfs_server
*server
, struct nfs4_label
*label
)
127 return server
->attr_bitmask
;
129 return server
->attr_bitmask_nl
;
132 static inline struct nfs4_label
*
133 nfs4_label_init_security(struct inode
*dir
, struct dentry
*dentry
,
134 struct iattr
*sattr
, struct nfs4_label
*l
)
137 nfs4_label_release_security(struct nfs4_label
*label
)
140 nfs4_bitmask(struct nfs_server
*server
, struct nfs4_label
*label
)
141 { return server
->attr_bitmask
; }
144 /* Prevent leaks of NFSv4 errors into userland */
145 static int nfs4_map_errors(int err
)
150 case -NFS4ERR_RESOURCE
:
151 case -NFS4ERR_LAYOUTTRYLATER
:
152 case -NFS4ERR_RECALLCONFLICT
:
154 case -NFS4ERR_WRONGSEC
:
156 case -NFS4ERR_BADOWNER
:
157 case -NFS4ERR_BADNAME
:
159 case -NFS4ERR_SHARE_DENIED
:
161 case -NFS4ERR_MINOR_VERS_MISMATCH
:
162 return -EPROTONOSUPPORT
;
163 case -NFS4ERR_ACCESS
:
165 case -NFS4ERR_FILE_OPEN
:
168 dprintk("%s could not handle NFSv4 error %d\n",
176 * This is our standard bitmap for GETATTR requests.
178 const u32 nfs4_fattr_bitmap
[3] = {
180 | FATTR4_WORD0_CHANGE
183 | FATTR4_WORD0_FILEID
,
185 | FATTR4_WORD1_NUMLINKS
187 | FATTR4_WORD1_OWNER_GROUP
188 | FATTR4_WORD1_RAWDEV
189 | FATTR4_WORD1_SPACE_USED
190 | FATTR4_WORD1_TIME_ACCESS
191 | FATTR4_WORD1_TIME_METADATA
192 | FATTR4_WORD1_TIME_MODIFY
,
193 #ifdef CONFIG_NFS_V4_SECURITY_LABEL
194 FATTR4_WORD2_SECURITY_LABEL
198 static const u32 nfs4_pnfs_open_bitmap
[3] = {
200 | FATTR4_WORD0_CHANGE
203 | FATTR4_WORD0_FILEID
,
205 | FATTR4_WORD1_NUMLINKS
207 | FATTR4_WORD1_OWNER_GROUP
208 | FATTR4_WORD1_RAWDEV
209 | FATTR4_WORD1_SPACE_USED
210 | FATTR4_WORD1_TIME_ACCESS
211 | FATTR4_WORD1_TIME_METADATA
212 | FATTR4_WORD1_TIME_MODIFY
,
213 FATTR4_WORD2_MDSTHRESHOLD
216 static const u32 nfs4_open_noattr_bitmap
[3] = {
218 | FATTR4_WORD0_CHANGE
219 | FATTR4_WORD0_FILEID
,
222 const u32 nfs4_statfs_bitmap
[3] = {
223 FATTR4_WORD0_FILES_AVAIL
224 | FATTR4_WORD0_FILES_FREE
225 | FATTR4_WORD0_FILES_TOTAL
,
226 FATTR4_WORD1_SPACE_AVAIL
227 | FATTR4_WORD1_SPACE_FREE
228 | FATTR4_WORD1_SPACE_TOTAL
231 const u32 nfs4_pathconf_bitmap
[3] = {
233 | FATTR4_WORD0_MAXNAME
,
237 const u32 nfs4_fsinfo_bitmap
[3] = { FATTR4_WORD0_MAXFILESIZE
238 | FATTR4_WORD0_MAXREAD
239 | FATTR4_WORD0_MAXWRITE
240 | FATTR4_WORD0_LEASE_TIME
,
241 FATTR4_WORD1_TIME_DELTA
242 | FATTR4_WORD1_FS_LAYOUT_TYPES
,
243 FATTR4_WORD2_LAYOUT_BLKSIZE
246 const u32 nfs4_fs_locations_bitmap
[3] = {
248 | FATTR4_WORD0_CHANGE
251 | FATTR4_WORD0_FILEID
252 | FATTR4_WORD0_FS_LOCATIONS
,
254 | FATTR4_WORD1_NUMLINKS
256 | FATTR4_WORD1_OWNER_GROUP
257 | FATTR4_WORD1_RAWDEV
258 | FATTR4_WORD1_SPACE_USED
259 | FATTR4_WORD1_TIME_ACCESS
260 | FATTR4_WORD1_TIME_METADATA
261 | FATTR4_WORD1_TIME_MODIFY
262 | FATTR4_WORD1_MOUNTED_ON_FILEID
,
265 static void nfs4_setup_readdir(u64 cookie
, __be32
*verifier
, struct dentry
*dentry
,
266 struct nfs4_readdir_arg
*readdir
)
271 readdir
->cookie
= cookie
;
272 memcpy(&readdir
->verifier
, verifier
, sizeof(readdir
->verifier
));
277 memset(&readdir
->verifier
, 0, sizeof(readdir
->verifier
));
282 * NFSv4 servers do not return entries for '.' and '..'
283 * Therefore, we fake these entries here. We let '.'
284 * have cookie 0 and '..' have cookie 1. Note that
285 * when talking to the server, we always send cookie 0
288 start
= p
= kmap_atomic(*readdir
->pages
);
291 *p
++ = xdr_one
; /* next */
292 *p
++ = xdr_zero
; /* cookie, first word */
293 *p
++ = xdr_one
; /* cookie, second word */
294 *p
++ = xdr_one
; /* entry len */
295 memcpy(p
, ".\0\0\0", 4); /* entry */
297 *p
++ = xdr_one
; /* bitmap length */
298 *p
++ = htonl(FATTR4_WORD0_FILEID
); /* bitmap */
299 *p
++ = htonl(8); /* attribute buffer length */
300 p
= xdr_encode_hyper(p
, NFS_FILEID(dentry
->d_inode
));
303 *p
++ = xdr_one
; /* next */
304 *p
++ = xdr_zero
; /* cookie, first word */
305 *p
++ = xdr_two
; /* cookie, second word */
306 *p
++ = xdr_two
; /* entry len */
307 memcpy(p
, "..\0\0", 4); /* entry */
309 *p
++ = xdr_one
; /* bitmap length */
310 *p
++ = htonl(FATTR4_WORD0_FILEID
); /* bitmap */
311 *p
++ = htonl(8); /* attribute buffer length */
312 p
= xdr_encode_hyper(p
, NFS_FILEID(dentry
->d_parent
->d_inode
));
314 readdir
->pgbase
= (char *)p
- (char *)start
;
315 readdir
->count
-= readdir
->pgbase
;
316 kunmap_atomic(start
);
319 static int nfs4_delay(struct rpc_clnt
*clnt
, long *timeout
)
326 *timeout
= NFS4_POLL_RETRY_MIN
;
327 if (*timeout
> NFS4_POLL_RETRY_MAX
)
328 *timeout
= NFS4_POLL_RETRY_MAX
;
329 freezable_schedule_timeout_killable_unsafe(*timeout
);
330 if (fatal_signal_pending(current
))
336 /* This is the error handling routine for processes that are allowed
339 static int nfs4_handle_exception(struct nfs_server
*server
, int errorcode
, struct nfs4_exception
*exception
)
341 struct nfs_client
*clp
= server
->nfs_client
;
342 struct nfs4_state
*state
= exception
->state
;
343 struct inode
*inode
= exception
->inode
;
346 exception
->retry
= 0;
350 case -NFS4ERR_OPENMODE
:
351 if (inode
&& nfs4_have_delegation(inode
, FMODE_READ
)) {
352 nfs4_inode_return_delegation(inode
);
353 exception
->retry
= 1;
358 ret
= nfs4_schedule_stateid_recovery(server
, state
);
361 goto wait_on_recovery
;
362 case -NFS4ERR_DELEG_REVOKED
:
363 case -NFS4ERR_ADMIN_REVOKED
:
364 case -NFS4ERR_BAD_STATEID
:
365 if (inode
!= NULL
&& nfs4_have_delegation(inode
, FMODE_READ
)) {
366 nfs_remove_bad_delegation(inode
);
367 exception
->retry
= 1;
372 ret
= nfs4_schedule_stateid_recovery(server
, state
);
375 goto wait_on_recovery
;
376 case -NFS4ERR_EXPIRED
:
378 ret
= nfs4_schedule_stateid_recovery(server
, state
);
382 case -NFS4ERR_STALE_STATEID
:
383 case -NFS4ERR_STALE_CLIENTID
:
384 nfs4_schedule_lease_recovery(clp
);
385 goto wait_on_recovery
;
386 #if defined(CONFIG_NFS_V4_1)
387 case -NFS4ERR_BADSESSION
:
388 case -NFS4ERR_BADSLOT
:
389 case -NFS4ERR_BAD_HIGH_SLOT
:
390 case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION
:
391 case -NFS4ERR_DEADSESSION
:
392 case -NFS4ERR_SEQ_FALSE_RETRY
:
393 case -NFS4ERR_SEQ_MISORDERED
:
394 dprintk("%s ERROR: %d Reset session\n", __func__
,
396 nfs4_schedule_session_recovery(clp
->cl_session
, errorcode
);
397 goto wait_on_recovery
;
398 #endif /* defined(CONFIG_NFS_V4_1) */
399 case -NFS4ERR_FILE_OPEN
:
400 if (exception
->timeout
> HZ
) {
401 /* We have retried a decent amount, time to
409 ret
= nfs4_delay(server
->client
, &exception
->timeout
);
412 case -NFS4ERR_RETRY_UNCACHED_REP
:
413 case -NFS4ERR_OLD_STATEID
:
414 exception
->retry
= 1;
416 case -NFS4ERR_BADOWNER
:
417 /* The following works around a Linux server bug! */
418 case -NFS4ERR_BADNAME
:
419 if (server
->caps
& NFS_CAP_UIDGID_NOMAP
) {
420 server
->caps
&= ~NFS_CAP_UIDGID_NOMAP
;
421 exception
->retry
= 1;
422 printk(KERN_WARNING
"NFS: v4 server %s "
423 "does not accept raw "
425 "Reenabling the idmapper.\n",
426 server
->nfs_client
->cl_hostname
);
429 /* We failed to handle the error */
430 return nfs4_map_errors(ret
);
432 ret
= nfs4_wait_clnt_recover(clp
);
434 exception
->retry
= 1;
439 * Return 'true' if 'clp' is using an rpc_client that is integrity protected
440 * or 'false' otherwise.
442 static bool _nfs4_is_integrity_protected(struct nfs_client
*clp
)
444 rpc_authflavor_t flavor
= clp
->cl_rpcclient
->cl_auth
->au_flavor
;
446 if (flavor
== RPC_AUTH_GSS_KRB5I
||
447 flavor
== RPC_AUTH_GSS_KRB5P
)
453 static void do_renew_lease(struct nfs_client
*clp
, unsigned long timestamp
)
455 spin_lock(&clp
->cl_lock
);
456 if (time_before(clp
->cl_last_renewal
,timestamp
))
457 clp
->cl_last_renewal
= timestamp
;
458 spin_unlock(&clp
->cl_lock
);
461 static void renew_lease(const struct nfs_server
*server
, unsigned long timestamp
)
463 do_renew_lease(server
->nfs_client
, timestamp
);
466 struct nfs4_call_sync_data
{
467 const struct nfs_server
*seq_server
;
468 struct nfs4_sequence_args
*seq_args
;
469 struct nfs4_sequence_res
*seq_res
;
472 static void nfs4_init_sequence(struct nfs4_sequence_args
*args
,
473 struct nfs4_sequence_res
*res
, int cache_reply
)
475 args
->sa_slot
= NULL
;
476 args
->sa_cache_this
= cache_reply
;
477 args
->sa_privileged
= 0;
482 static void nfs4_set_sequence_privileged(struct nfs4_sequence_args
*args
)
484 args
->sa_privileged
= 1;
487 static int nfs40_setup_sequence(const struct nfs_server
*server
,
488 struct nfs4_sequence_args
*args
,
489 struct nfs4_sequence_res
*res
,
490 struct rpc_task
*task
)
492 struct nfs4_slot_table
*tbl
= server
->nfs_client
->cl_slot_tbl
;
493 struct nfs4_slot
*slot
;
495 /* slot already allocated? */
496 if (res
->sr_slot
!= NULL
)
499 spin_lock(&tbl
->slot_tbl_lock
);
500 if (nfs4_slot_tbl_draining(tbl
) && !args
->sa_privileged
)
503 slot
= nfs4_alloc_slot(tbl
);
505 if (slot
== ERR_PTR(-ENOMEM
))
506 task
->tk_timeout
= HZ
>> 2;
509 spin_unlock(&tbl
->slot_tbl_lock
);
511 args
->sa_slot
= slot
;
515 rpc_call_start(task
);
519 if (args
->sa_privileged
)
520 rpc_sleep_on_priority(&tbl
->slot_tbl_waitq
, task
,
521 NULL
, RPC_PRIORITY_PRIVILEGED
);
523 rpc_sleep_on(&tbl
->slot_tbl_waitq
, task
, NULL
);
524 spin_unlock(&tbl
->slot_tbl_lock
);
528 static int nfs40_sequence_done(struct rpc_task
*task
,
529 struct nfs4_sequence_res
*res
)
531 struct nfs4_slot
*slot
= res
->sr_slot
;
532 struct nfs4_slot_table
*tbl
;
534 if (!RPC_WAS_SENT(task
))
538 spin_lock(&tbl
->slot_tbl_lock
);
539 if (!nfs41_wake_and_assign_slot(tbl
, slot
))
540 nfs4_free_slot(tbl
, slot
);
541 spin_unlock(&tbl
->slot_tbl_lock
);
548 #if defined(CONFIG_NFS_V4_1)
550 static void nfs41_sequence_free_slot(struct nfs4_sequence_res
*res
)
552 struct nfs4_session
*session
;
553 struct nfs4_slot_table
*tbl
;
554 bool send_new_highest_used_slotid
= false;
557 /* just wake up the next guy waiting since
558 * we may have not consumed a slot after all */
559 dprintk("%s: No slot\n", __func__
);
562 tbl
= res
->sr_slot
->table
;
563 session
= tbl
->session
;
565 spin_lock(&tbl
->slot_tbl_lock
);
566 /* Be nice to the server: try to ensure that the last transmitted
567 * value for highest_user_slotid <= target_highest_slotid
569 if (tbl
->highest_used_slotid
> tbl
->target_highest_slotid
)
570 send_new_highest_used_slotid
= true;
572 if (nfs41_wake_and_assign_slot(tbl
, res
->sr_slot
)) {
573 send_new_highest_used_slotid
= false;
576 nfs4_free_slot(tbl
, res
->sr_slot
);
578 if (tbl
->highest_used_slotid
!= NFS4_NO_SLOT
)
579 send_new_highest_used_slotid
= false;
581 spin_unlock(&tbl
->slot_tbl_lock
);
583 if (send_new_highest_used_slotid
)
584 nfs41_server_notify_highest_slotid_update(session
->clp
);
587 static int nfs41_sequence_done(struct rpc_task
*task
, struct nfs4_sequence_res
*res
)
589 struct nfs4_session
*session
;
590 struct nfs4_slot
*slot
;
591 struct nfs_client
*clp
;
592 bool interrupted
= false;
595 /* don't increment the sequence number if the task wasn't sent */
596 if (!RPC_WAS_SENT(task
))
600 session
= slot
->table
->session
;
602 if (slot
->interrupted
) {
603 slot
->interrupted
= 0;
607 trace_nfs4_sequence_done(session
, res
);
608 /* Check the SEQUENCE operation status */
609 switch (res
->sr_status
) {
611 /* Update the slot's sequence and clientid lease timer */
614 do_renew_lease(clp
, res
->sr_timestamp
);
615 /* Check sequence flags */
616 if (res
->sr_status_flags
!= 0)
617 nfs4_schedule_lease_recovery(clp
);
618 nfs41_update_target_slotid(slot
->table
, slot
, res
);
622 * sr_status remains 1 if an RPC level error occurred.
623 * The server may or may not have processed the sequence
625 * Mark the slot as having hosted an interrupted RPC call.
627 slot
->interrupted
= 1;
630 /* The server detected a resend of the RPC call and
631 * returned NFS4ERR_DELAY as per Section 2.10.6.2
634 dprintk("%s: slot=%u seq=%u: Operation in progress\n",
639 case -NFS4ERR_BADSLOT
:
641 * The slot id we used was probably retired. Try again
642 * using a different slot id.
645 case -NFS4ERR_SEQ_MISORDERED
:
647 * Was the last operation on this sequence interrupted?
648 * If so, retry after bumping the sequence number.
655 * Could this slot have been previously retired?
656 * If so, then the server may be expecting seq_nr = 1!
658 if (slot
->seq_nr
!= 1) {
663 case -NFS4ERR_SEQ_FALSE_RETRY
:
667 /* Just update the slot sequence no. */
671 /* The session may be reset by one of the error handlers. */
672 dprintk("%s: Error %d free the slot \n", __func__
, res
->sr_status
);
673 nfs41_sequence_free_slot(res
);
676 if (rpc_restart_call_prepare(task
)) {
682 if (!rpc_restart_call(task
))
684 rpc_delay(task
, NFS4_POLL_RETRY_MAX
);
688 static int nfs4_sequence_done(struct rpc_task
*task
,
689 struct nfs4_sequence_res
*res
)
691 if (res
->sr_slot
== NULL
)
693 if (!res
->sr_slot
->table
->session
)
694 return nfs40_sequence_done(task
, res
);
695 return nfs41_sequence_done(task
, res
);
698 int nfs41_setup_sequence(struct nfs4_session
*session
,
699 struct nfs4_sequence_args
*args
,
700 struct nfs4_sequence_res
*res
,
701 struct rpc_task
*task
)
703 struct nfs4_slot
*slot
;
704 struct nfs4_slot_table
*tbl
;
706 dprintk("--> %s\n", __func__
);
707 /* slot already allocated? */
708 if (res
->sr_slot
!= NULL
)
711 tbl
= &session
->fc_slot_table
;
713 task
->tk_timeout
= 0;
715 spin_lock(&tbl
->slot_tbl_lock
);
716 if (test_bit(NFS4_SLOT_TBL_DRAINING
, &tbl
->slot_tbl_state
) &&
717 !args
->sa_privileged
) {
718 /* The state manager will wait until the slot table is empty */
719 dprintk("%s session is draining\n", __func__
);
723 slot
= nfs4_alloc_slot(tbl
);
725 /* If out of memory, try again in 1/4 second */
726 if (slot
== ERR_PTR(-ENOMEM
))
727 task
->tk_timeout
= HZ
>> 2;
728 dprintk("<-- %s: no free slots\n", __func__
);
731 spin_unlock(&tbl
->slot_tbl_lock
);
733 args
->sa_slot
= slot
;
735 dprintk("<-- %s slotid=%u seqid=%u\n", __func__
,
736 slot
->slot_nr
, slot
->seq_nr
);
739 res
->sr_timestamp
= jiffies
;
740 res
->sr_status_flags
= 0;
742 * sr_status is only set in decode_sequence, and so will remain
743 * set to 1 if an rpc level failure occurs.
746 trace_nfs4_setup_sequence(session
, args
);
748 rpc_call_start(task
);
751 /* Privileged tasks are queued with top priority */
752 if (args
->sa_privileged
)
753 rpc_sleep_on_priority(&tbl
->slot_tbl_waitq
, task
,
754 NULL
, RPC_PRIORITY_PRIVILEGED
);
756 rpc_sleep_on(&tbl
->slot_tbl_waitq
, task
, NULL
);
757 spin_unlock(&tbl
->slot_tbl_lock
);
760 EXPORT_SYMBOL_GPL(nfs41_setup_sequence
);
762 static int nfs4_setup_sequence(const struct nfs_server
*server
,
763 struct nfs4_sequence_args
*args
,
764 struct nfs4_sequence_res
*res
,
765 struct rpc_task
*task
)
767 struct nfs4_session
*session
= nfs4_get_session(server
);
771 return nfs40_setup_sequence(server
, args
, res
, task
);
773 dprintk("--> %s clp %p session %p sr_slot %u\n",
774 __func__
, session
->clp
, session
, res
->sr_slot
?
775 res
->sr_slot
->slot_nr
: NFS4_NO_SLOT
);
777 ret
= nfs41_setup_sequence(session
, args
, res
, task
);
779 dprintk("<-- %s status=%d\n", __func__
, ret
);
783 static void nfs41_call_sync_prepare(struct rpc_task
*task
, void *calldata
)
785 struct nfs4_call_sync_data
*data
= calldata
;
786 struct nfs4_session
*session
= nfs4_get_session(data
->seq_server
);
788 dprintk("--> %s data->seq_server %p\n", __func__
, data
->seq_server
);
790 nfs41_setup_sequence(session
, data
->seq_args
, data
->seq_res
, task
);
793 static void nfs41_call_sync_done(struct rpc_task
*task
, void *calldata
)
795 struct nfs4_call_sync_data
*data
= calldata
;
797 nfs41_sequence_done(task
, data
->seq_res
);
800 static const struct rpc_call_ops nfs41_call_sync_ops
= {
801 .rpc_call_prepare
= nfs41_call_sync_prepare
,
802 .rpc_call_done
= nfs41_call_sync_done
,
805 #else /* !CONFIG_NFS_V4_1 */
807 static int nfs4_setup_sequence(const struct nfs_server
*server
,
808 struct nfs4_sequence_args
*args
,
809 struct nfs4_sequence_res
*res
,
810 struct rpc_task
*task
)
812 return nfs40_setup_sequence(server
, args
, res
, task
);
815 static int nfs4_sequence_done(struct rpc_task
*task
,
816 struct nfs4_sequence_res
*res
)
818 return nfs40_sequence_done(task
, res
);
821 #endif /* !CONFIG_NFS_V4_1 */
823 static void nfs40_call_sync_prepare(struct rpc_task
*task
, void *calldata
)
825 struct nfs4_call_sync_data
*data
= calldata
;
826 nfs4_setup_sequence(data
->seq_server
,
827 data
->seq_args
, data
->seq_res
, task
);
830 static void nfs40_call_sync_done(struct rpc_task
*task
, void *calldata
)
832 struct nfs4_call_sync_data
*data
= calldata
;
833 nfs4_sequence_done(task
, data
->seq_res
);
836 static const struct rpc_call_ops nfs40_call_sync_ops
= {
837 .rpc_call_prepare
= nfs40_call_sync_prepare
,
838 .rpc_call_done
= nfs40_call_sync_done
,
841 static int nfs4_call_sync_sequence(struct rpc_clnt
*clnt
,
842 struct nfs_server
*server
,
843 struct rpc_message
*msg
,
844 struct nfs4_sequence_args
*args
,
845 struct nfs4_sequence_res
*res
)
848 struct rpc_task
*task
;
849 struct nfs_client
*clp
= server
->nfs_client
;
850 struct nfs4_call_sync_data data
= {
851 .seq_server
= server
,
855 struct rpc_task_setup task_setup
= {
858 .callback_ops
= clp
->cl_mvops
->call_sync_ops
,
859 .callback_data
= &data
862 task
= rpc_run_task(&task_setup
);
866 ret
= task
->tk_status
;
873 int nfs4_call_sync(struct rpc_clnt
*clnt
,
874 struct nfs_server
*server
,
875 struct rpc_message
*msg
,
876 struct nfs4_sequence_args
*args
,
877 struct nfs4_sequence_res
*res
,
880 nfs4_init_sequence(args
, res
, cache_reply
);
881 return nfs4_call_sync_sequence(clnt
, server
, msg
, args
, res
);
884 static void update_changeattr(struct inode
*dir
, struct nfs4_change_info
*cinfo
)
886 struct nfs_inode
*nfsi
= NFS_I(dir
);
888 spin_lock(&dir
->i_lock
);
889 nfsi
->cache_validity
|= NFS_INO_INVALID_ATTR
|NFS_INO_INVALID_DATA
;
890 if (!cinfo
->atomic
|| cinfo
->before
!= dir
->i_version
)
891 nfs_force_lookup_revalidate(dir
);
892 dir
->i_version
= cinfo
->after
;
893 nfs_fscache_invalidate(dir
);
894 spin_unlock(&dir
->i_lock
);
897 struct nfs4_opendata
{
899 struct nfs_openargs o_arg
;
900 struct nfs_openres o_res
;
901 struct nfs_open_confirmargs c_arg
;
902 struct nfs_open_confirmres c_res
;
903 struct nfs4_string owner_name
;
904 struct nfs4_string group_name
;
905 struct nfs_fattr f_attr
;
906 struct nfs4_label
*f_label
;
908 struct dentry
*dentry
;
909 struct nfs4_state_owner
*owner
;
910 struct nfs4_state
*state
;
912 unsigned long timestamp
;
913 unsigned int rpc_done
: 1;
914 unsigned int is_recover
: 1;
919 static bool nfs4_clear_cap_atomic_open_v1(struct nfs_server
*server
,
920 int err
, struct nfs4_exception
*exception
)
924 if (!(server
->caps
& NFS_CAP_ATOMIC_OPEN_V1
))
926 server
->caps
&= ~NFS_CAP_ATOMIC_OPEN_V1
;
927 exception
->retry
= 1;
931 static enum open_claim_type4
932 nfs4_map_atomic_open_claim(struct nfs_server
*server
,
933 enum open_claim_type4 claim
)
935 if (server
->caps
& NFS_CAP_ATOMIC_OPEN_V1
)
940 case NFS4_OPEN_CLAIM_FH
:
941 return NFS4_OPEN_CLAIM_NULL
;
942 case NFS4_OPEN_CLAIM_DELEG_CUR_FH
:
943 return NFS4_OPEN_CLAIM_DELEGATE_CUR
;
944 case NFS4_OPEN_CLAIM_DELEG_PREV_FH
:
945 return NFS4_OPEN_CLAIM_DELEGATE_PREV
;
949 static void nfs4_init_opendata_res(struct nfs4_opendata
*p
)
951 p
->o_res
.f_attr
= &p
->f_attr
;
952 p
->o_res
.f_label
= p
->f_label
;
953 p
->o_res
.seqid
= p
->o_arg
.seqid
;
954 p
->c_res
.seqid
= p
->c_arg
.seqid
;
955 p
->o_res
.server
= p
->o_arg
.server
;
956 p
->o_res
.access_request
= p
->o_arg
.access
;
957 nfs_fattr_init(&p
->f_attr
);
958 nfs_fattr_init_names(&p
->f_attr
, &p
->owner_name
, &p
->group_name
);
961 static struct nfs4_opendata
*nfs4_opendata_alloc(struct dentry
*dentry
,
962 struct nfs4_state_owner
*sp
, fmode_t fmode
, int flags
,
963 const struct iattr
*attrs
,
964 struct nfs4_label
*label
,
965 enum open_claim_type4 claim
,
968 struct dentry
*parent
= dget_parent(dentry
);
969 struct inode
*dir
= parent
->d_inode
;
970 struct nfs_server
*server
= NFS_SERVER(dir
);
971 struct nfs4_opendata
*p
;
973 p
= kzalloc(sizeof(*p
), gfp_mask
);
977 p
->f_label
= nfs4_label_alloc(server
, gfp_mask
);
978 if (IS_ERR(p
->f_label
))
981 p
->o_arg
.seqid
= nfs_alloc_seqid(&sp
->so_seqid
, gfp_mask
);
982 if (p
->o_arg
.seqid
== NULL
)
984 nfs_sb_active(dentry
->d_sb
);
985 p
->dentry
= dget(dentry
);
988 atomic_inc(&sp
->so_count
);
989 p
->o_arg
.open_flags
= flags
;
990 p
->o_arg
.fmode
= fmode
& (FMODE_READ
|FMODE_WRITE
);
991 /* don't put an ACCESS op in OPEN compound if O_EXCL, because ACCESS
992 * will return permission denied for all bits until close */
993 if (!(flags
& O_EXCL
)) {
994 /* ask server to check for all possible rights as results
996 p
->o_arg
.access
= NFS4_ACCESS_READ
| NFS4_ACCESS_MODIFY
|
997 NFS4_ACCESS_EXTEND
| NFS4_ACCESS_EXECUTE
;
999 p
->o_arg
.clientid
= server
->nfs_client
->cl_clientid
;
1000 p
->o_arg
.id
.create_time
= ktime_to_ns(sp
->so_seqid
.create_time
);
1001 p
->o_arg
.id
.uniquifier
= sp
->so_seqid
.owner_id
;
1002 p
->o_arg
.name
= &dentry
->d_name
;
1003 p
->o_arg
.server
= server
;
1004 p
->o_arg
.bitmask
= nfs4_bitmask(server
, label
);
1005 p
->o_arg
.open_bitmap
= &nfs4_fattr_bitmap
[0];
1006 p
->o_arg
.label
= label
;
1007 p
->o_arg
.claim
= nfs4_map_atomic_open_claim(server
, claim
);
1008 switch (p
->o_arg
.claim
) {
1009 case NFS4_OPEN_CLAIM_NULL
:
1010 case NFS4_OPEN_CLAIM_DELEGATE_CUR
:
1011 case NFS4_OPEN_CLAIM_DELEGATE_PREV
:
1012 p
->o_arg
.fh
= NFS_FH(dir
);
1014 case NFS4_OPEN_CLAIM_PREVIOUS
:
1015 case NFS4_OPEN_CLAIM_FH
:
1016 case NFS4_OPEN_CLAIM_DELEG_CUR_FH
:
1017 case NFS4_OPEN_CLAIM_DELEG_PREV_FH
:
1018 p
->o_arg
.fh
= NFS_FH(dentry
->d_inode
);
1020 if (attrs
!= NULL
&& attrs
->ia_valid
!= 0) {
1023 p
->o_arg
.u
.attrs
= &p
->attrs
;
1024 memcpy(&p
->attrs
, attrs
, sizeof(p
->attrs
));
1027 verf
[1] = current
->pid
;
1028 memcpy(p
->o_arg
.u
.verifier
.data
, verf
,
1029 sizeof(p
->o_arg
.u
.verifier
.data
));
1031 p
->c_arg
.fh
= &p
->o_res
.fh
;
1032 p
->c_arg
.stateid
= &p
->o_res
.stateid
;
1033 p
->c_arg
.seqid
= p
->o_arg
.seqid
;
1034 nfs4_init_opendata_res(p
);
1035 kref_init(&p
->kref
);
1039 nfs4_label_free(p
->f_label
);
1047 static void nfs4_opendata_free(struct kref
*kref
)
1049 struct nfs4_opendata
*p
= container_of(kref
,
1050 struct nfs4_opendata
, kref
);
1051 struct super_block
*sb
= p
->dentry
->d_sb
;
1053 nfs_free_seqid(p
->o_arg
.seqid
);
1054 if (p
->state
!= NULL
)
1055 nfs4_put_open_state(p
->state
);
1056 nfs4_put_state_owner(p
->owner
);
1058 nfs4_label_free(p
->f_label
);
1062 nfs_sb_deactive(sb
);
1063 nfs_fattr_free_names(&p
->f_attr
);
1067 static void nfs4_opendata_put(struct nfs4_opendata
*p
)
1070 kref_put(&p
->kref
, nfs4_opendata_free
);
1073 static int nfs4_wait_for_completion_rpc_task(struct rpc_task
*task
)
1077 ret
= rpc_wait_for_completion_task(task
);
1081 static int can_open_cached(struct nfs4_state
*state
, fmode_t mode
, int open_mode
)
1085 if (open_mode
& (O_EXCL
|O_TRUNC
))
1087 switch (mode
& (FMODE_READ
|FMODE_WRITE
)) {
1089 ret
|= test_bit(NFS_O_RDONLY_STATE
, &state
->flags
) != 0
1090 && state
->n_rdonly
!= 0;
1093 ret
|= test_bit(NFS_O_WRONLY_STATE
, &state
->flags
) != 0
1094 && state
->n_wronly
!= 0;
1096 case FMODE_READ
|FMODE_WRITE
:
1097 ret
|= test_bit(NFS_O_RDWR_STATE
, &state
->flags
) != 0
1098 && state
->n_rdwr
!= 0;
1104 static int can_open_delegated(struct nfs_delegation
*delegation
, fmode_t fmode
)
1106 if (delegation
== NULL
)
1108 if ((delegation
->type
& fmode
) != fmode
)
1110 if (test_bit(NFS_DELEGATION_NEED_RECLAIM
, &delegation
->flags
))
1112 if (test_bit(NFS_DELEGATION_RETURNING
, &delegation
->flags
))
1114 nfs_mark_delegation_referenced(delegation
);
1118 static void update_open_stateflags(struct nfs4_state
*state
, fmode_t fmode
)
1127 case FMODE_READ
|FMODE_WRITE
:
1130 nfs4_state_set_mode_locked(state
, state
->state
| fmode
);
1133 static void nfs_set_open_stateid_locked(struct nfs4_state
*state
, nfs4_stateid
*stateid
, fmode_t fmode
)
1135 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) == 0)
1136 nfs4_stateid_copy(&state
->stateid
, stateid
);
1137 nfs4_stateid_copy(&state
->open_stateid
, stateid
);
1138 set_bit(NFS_OPEN_STATE
, &state
->flags
);
1141 set_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
1144 set_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
1146 case FMODE_READ
|FMODE_WRITE
:
1147 set_bit(NFS_O_RDWR_STATE
, &state
->flags
);
1151 static void nfs_set_open_stateid(struct nfs4_state
*state
, nfs4_stateid
*stateid
, fmode_t fmode
)
1153 write_seqlock(&state
->seqlock
);
1154 nfs_set_open_stateid_locked(state
, stateid
, fmode
);
1155 write_sequnlock(&state
->seqlock
);
1158 static void __update_open_stateid(struct nfs4_state
*state
, nfs4_stateid
*open_stateid
, const nfs4_stateid
*deleg_stateid
, fmode_t fmode
)
1161 * Protect the call to nfs4_state_set_mode_locked and
1162 * serialise the stateid update
1164 write_seqlock(&state
->seqlock
);
1165 if (deleg_stateid
!= NULL
) {
1166 nfs4_stateid_copy(&state
->stateid
, deleg_stateid
);
1167 set_bit(NFS_DELEGATED_STATE
, &state
->flags
);
1169 if (open_stateid
!= NULL
)
1170 nfs_set_open_stateid_locked(state
, open_stateid
, fmode
);
1171 write_sequnlock(&state
->seqlock
);
1172 spin_lock(&state
->owner
->so_lock
);
1173 update_open_stateflags(state
, fmode
);
1174 spin_unlock(&state
->owner
->so_lock
);
1177 static int update_open_stateid(struct nfs4_state
*state
, nfs4_stateid
*open_stateid
, nfs4_stateid
*delegation
, fmode_t fmode
)
1179 struct nfs_inode
*nfsi
= NFS_I(state
->inode
);
1180 struct nfs_delegation
*deleg_cur
;
1183 fmode
&= (FMODE_READ
|FMODE_WRITE
);
1186 deleg_cur
= rcu_dereference(nfsi
->delegation
);
1187 if (deleg_cur
== NULL
)
1190 spin_lock(&deleg_cur
->lock
);
1191 if (rcu_dereference(nfsi
->delegation
) != deleg_cur
||
1192 test_bit(NFS_DELEGATION_RETURNING
, &deleg_cur
->flags
) ||
1193 (deleg_cur
->type
& fmode
) != fmode
)
1194 goto no_delegation_unlock
;
1196 if (delegation
== NULL
)
1197 delegation
= &deleg_cur
->stateid
;
1198 else if (!nfs4_stateid_match(&deleg_cur
->stateid
, delegation
))
1199 goto no_delegation_unlock
;
1201 nfs_mark_delegation_referenced(deleg_cur
);
1202 __update_open_stateid(state
, open_stateid
, &deleg_cur
->stateid
, fmode
);
1204 no_delegation_unlock
:
1205 spin_unlock(&deleg_cur
->lock
);
1209 if (!ret
&& open_stateid
!= NULL
) {
1210 __update_open_stateid(state
, open_stateid
, NULL
, fmode
);
1218 static void nfs4_return_incompatible_delegation(struct inode
*inode
, fmode_t fmode
)
1220 struct nfs_delegation
*delegation
;
1223 delegation
= rcu_dereference(NFS_I(inode
)->delegation
);
1224 if (delegation
== NULL
|| (delegation
->type
& fmode
) == fmode
) {
1229 nfs4_inode_return_delegation(inode
);
1232 static struct nfs4_state
*nfs4_try_open_cached(struct nfs4_opendata
*opendata
)
1234 struct nfs4_state
*state
= opendata
->state
;
1235 struct nfs_inode
*nfsi
= NFS_I(state
->inode
);
1236 struct nfs_delegation
*delegation
;
1237 int open_mode
= opendata
->o_arg
.open_flags
;
1238 fmode_t fmode
= opendata
->o_arg
.fmode
;
1239 nfs4_stateid stateid
;
1243 if (can_open_cached(state
, fmode
, open_mode
)) {
1244 spin_lock(&state
->owner
->so_lock
);
1245 if (can_open_cached(state
, fmode
, open_mode
)) {
1246 update_open_stateflags(state
, fmode
);
1247 spin_unlock(&state
->owner
->so_lock
);
1248 goto out_return_state
;
1250 spin_unlock(&state
->owner
->so_lock
);
1253 delegation
= rcu_dereference(nfsi
->delegation
);
1254 if (!can_open_delegated(delegation
, fmode
)) {
1258 /* Save the delegation */
1259 nfs4_stateid_copy(&stateid
, &delegation
->stateid
);
1261 nfs_release_seqid(opendata
->o_arg
.seqid
);
1262 if (!opendata
->is_recover
) {
1263 ret
= nfs_may_open(state
->inode
, state
->owner
->so_cred
, open_mode
);
1269 /* Try to update the stateid using the delegation */
1270 if (update_open_stateid(state
, NULL
, &stateid
, fmode
))
1271 goto out_return_state
;
1274 return ERR_PTR(ret
);
1276 atomic_inc(&state
->count
);
1281 nfs4_opendata_check_deleg(struct nfs4_opendata
*data
, struct nfs4_state
*state
)
1283 struct nfs_client
*clp
= NFS_SERVER(state
->inode
)->nfs_client
;
1284 struct nfs_delegation
*delegation
;
1285 int delegation_flags
= 0;
1288 delegation
= rcu_dereference(NFS_I(state
->inode
)->delegation
);
1290 delegation_flags
= delegation
->flags
;
1292 if (data
->o_arg
.claim
== NFS4_OPEN_CLAIM_DELEGATE_CUR
) {
1293 pr_err_ratelimited("NFS: Broken NFSv4 server %s is "
1294 "returning a delegation for "
1295 "OPEN(CLAIM_DELEGATE_CUR)\n",
1297 } else if ((delegation_flags
& 1UL<<NFS_DELEGATION_NEED_RECLAIM
) == 0)
1298 nfs_inode_set_delegation(state
->inode
,
1299 data
->owner
->so_cred
,
1302 nfs_inode_reclaim_delegation(state
->inode
,
1303 data
->owner
->so_cred
,
1308 * Check the inode attributes against the CLAIM_PREVIOUS returned attributes
1309 * and update the nfs4_state.
1311 static struct nfs4_state
*
1312 _nfs4_opendata_reclaim_to_nfs4_state(struct nfs4_opendata
*data
)
1314 struct inode
*inode
= data
->state
->inode
;
1315 struct nfs4_state
*state
= data
->state
;
1318 if (!data
->rpc_done
) {
1319 ret
= data
->rpc_status
;
1324 if (!(data
->f_attr
.valid
& NFS_ATTR_FATTR_TYPE
) ||
1325 !(data
->f_attr
.valid
& NFS_ATTR_FATTR_FILEID
) ||
1326 !(data
->f_attr
.valid
& NFS_ATTR_FATTR_CHANGE
))
1330 state
= nfs4_get_open_state(inode
, data
->owner
);
1334 ret
= nfs_refresh_inode(inode
, &data
->f_attr
);
1338 nfs_setsecurity(inode
, &data
->f_attr
, data
->f_label
);
1340 if (data
->o_res
.delegation_type
!= 0)
1341 nfs4_opendata_check_deleg(data
, state
);
1342 update_open_stateid(state
, &data
->o_res
.stateid
, NULL
,
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_DELEG_REVOKED
:
1577 case -NFS4ERR_ADMIN_REVOKED
:
1578 case -NFS4ERR_BAD_STATEID
:
1579 case -NFS4ERR_OPENMODE
:
1580 nfs_inode_find_state_and_recover(state
->inode
,
1582 nfs4_schedule_stateid_recovery(server
, state
);
1584 case -NFS4ERR_DELAY
:
1585 case -NFS4ERR_GRACE
:
1586 set_bit(NFS_DELEGATED_STATE
, &state
->flags
);
1590 case -NFS4ERR_DENIED
:
1591 /* kill_proc(fl->fl_pid, SIGLOST, 1); */
1597 int nfs4_open_delegation_recall(struct nfs_open_context
*ctx
, struct nfs4_state
*state
, const nfs4_stateid
*stateid
)
1599 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
1600 struct nfs4_opendata
*opendata
;
1603 opendata
= nfs4_open_recoverdata_alloc(ctx
, state
,
1604 NFS4_OPEN_CLAIM_DELEG_CUR_FH
);
1605 if (IS_ERR(opendata
))
1606 return PTR_ERR(opendata
);
1607 nfs4_stateid_copy(&opendata
->o_arg
.u
.delegation
, stateid
);
1608 err
= nfs4_open_recover(opendata
, state
);
1609 nfs4_opendata_put(opendata
);
1610 return nfs4_handle_delegation_recall_error(server
, state
, stateid
, err
);
1613 static void nfs4_open_confirm_done(struct rpc_task
*task
, void *calldata
)
1615 struct nfs4_opendata
*data
= calldata
;
1617 data
->rpc_status
= task
->tk_status
;
1618 if (data
->rpc_status
== 0) {
1619 nfs4_stateid_copy(&data
->o_res
.stateid
, &data
->c_res
.stateid
);
1620 nfs_confirm_seqid(&data
->owner
->so_seqid
, 0);
1621 renew_lease(data
->o_res
.server
, data
->timestamp
);
1626 static void nfs4_open_confirm_release(void *calldata
)
1628 struct nfs4_opendata
*data
= calldata
;
1629 struct nfs4_state
*state
= NULL
;
1631 /* If this request hasn't been cancelled, do nothing */
1632 if (data
->cancelled
== 0)
1634 /* In case of error, no cleanup! */
1635 if (!data
->rpc_done
)
1637 state
= nfs4_opendata_to_nfs4_state(data
);
1639 nfs4_close_state(state
, data
->o_arg
.fmode
);
1641 nfs4_opendata_put(data
);
1644 static const struct rpc_call_ops nfs4_open_confirm_ops
= {
1645 .rpc_call_done
= nfs4_open_confirm_done
,
1646 .rpc_release
= nfs4_open_confirm_release
,
1650 * Note: On error, nfs4_proc_open_confirm will free the struct nfs4_opendata
1652 static int _nfs4_proc_open_confirm(struct nfs4_opendata
*data
)
1654 struct nfs_server
*server
= NFS_SERVER(data
->dir
->d_inode
);
1655 struct rpc_task
*task
;
1656 struct rpc_message msg
= {
1657 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_OPEN_CONFIRM
],
1658 .rpc_argp
= &data
->c_arg
,
1659 .rpc_resp
= &data
->c_res
,
1660 .rpc_cred
= data
->owner
->so_cred
,
1662 struct rpc_task_setup task_setup_data
= {
1663 .rpc_client
= server
->client
,
1664 .rpc_message
= &msg
,
1665 .callback_ops
= &nfs4_open_confirm_ops
,
1666 .callback_data
= data
,
1667 .workqueue
= nfsiod_workqueue
,
1668 .flags
= RPC_TASK_ASYNC
,
1672 kref_get(&data
->kref
);
1674 data
->rpc_status
= 0;
1675 data
->timestamp
= jiffies
;
1676 task
= rpc_run_task(&task_setup_data
);
1678 return PTR_ERR(task
);
1679 status
= nfs4_wait_for_completion_rpc_task(task
);
1681 data
->cancelled
= 1;
1684 status
= data
->rpc_status
;
1689 static void nfs4_open_prepare(struct rpc_task
*task
, void *calldata
)
1691 struct nfs4_opendata
*data
= calldata
;
1692 struct nfs4_state_owner
*sp
= data
->owner
;
1693 struct nfs_client
*clp
= sp
->so_server
->nfs_client
;
1695 if (nfs_wait_on_sequence(data
->o_arg
.seqid
, task
) != 0)
1698 * Check if we still need to send an OPEN call, or if we can use
1699 * a delegation instead.
1701 if (data
->state
!= NULL
) {
1702 struct nfs_delegation
*delegation
;
1704 if (can_open_cached(data
->state
, data
->o_arg
.fmode
, data
->o_arg
.open_flags
))
1707 delegation
= rcu_dereference(NFS_I(data
->state
->inode
)->delegation
);
1708 if (data
->o_arg
.claim
!= NFS4_OPEN_CLAIM_DELEGATE_CUR
&&
1709 data
->o_arg
.claim
!= NFS4_OPEN_CLAIM_DELEG_CUR_FH
&&
1710 can_open_delegated(delegation
, data
->o_arg
.fmode
))
1711 goto unlock_no_action
;
1714 /* Update client id. */
1715 data
->o_arg
.clientid
= clp
->cl_clientid
;
1716 switch (data
->o_arg
.claim
) {
1717 case NFS4_OPEN_CLAIM_PREVIOUS
:
1718 case NFS4_OPEN_CLAIM_DELEG_CUR_FH
:
1719 case NFS4_OPEN_CLAIM_DELEG_PREV_FH
:
1720 data
->o_arg
.open_bitmap
= &nfs4_open_noattr_bitmap
[0];
1721 case NFS4_OPEN_CLAIM_FH
:
1722 task
->tk_msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_OPEN_NOATTR
];
1723 nfs_copy_fh(&data
->o_res
.fh
, data
->o_arg
.fh
);
1725 data
->timestamp
= jiffies
;
1726 if (nfs4_setup_sequence(data
->o_arg
.server
,
1727 &data
->o_arg
.seq_args
,
1728 &data
->o_res
.seq_res
,
1730 nfs_release_seqid(data
->o_arg
.seqid
);
1732 /* Set the create mode (note dependency on the session type) */
1733 data
->o_arg
.createmode
= NFS4_CREATE_UNCHECKED
;
1734 if (data
->o_arg
.open_flags
& O_EXCL
) {
1735 data
->o_arg
.createmode
= NFS4_CREATE_EXCLUSIVE
;
1736 if (nfs4_has_persistent_session(clp
))
1737 data
->o_arg
.createmode
= NFS4_CREATE_GUARDED
;
1738 else if (clp
->cl_mvops
->minor_version
> 0)
1739 data
->o_arg
.createmode
= NFS4_CREATE_EXCLUSIVE4_1
;
1745 task
->tk_action
= NULL
;
1747 nfs4_sequence_done(task
, &data
->o_res
.seq_res
);
1750 static void nfs4_open_done(struct rpc_task
*task
, void *calldata
)
1752 struct nfs4_opendata
*data
= calldata
;
1754 data
->rpc_status
= task
->tk_status
;
1756 if (!nfs4_sequence_done(task
, &data
->o_res
.seq_res
))
1759 if (task
->tk_status
== 0) {
1760 if (data
->o_res
.f_attr
->valid
& NFS_ATTR_FATTR_TYPE
) {
1761 switch (data
->o_res
.f_attr
->mode
& S_IFMT
) {
1765 data
->rpc_status
= -ELOOP
;
1768 data
->rpc_status
= -EISDIR
;
1771 data
->rpc_status
= -ENOTDIR
;
1774 renew_lease(data
->o_res
.server
, data
->timestamp
);
1775 if (!(data
->o_res
.rflags
& NFS4_OPEN_RESULT_CONFIRM
))
1776 nfs_confirm_seqid(&data
->owner
->so_seqid
, 0);
1781 static void nfs4_open_release(void *calldata
)
1783 struct nfs4_opendata
*data
= calldata
;
1784 struct nfs4_state
*state
= NULL
;
1786 /* If this request hasn't been cancelled, do nothing */
1787 if (data
->cancelled
== 0)
1789 /* In case of error, no cleanup! */
1790 if (data
->rpc_status
!= 0 || !data
->rpc_done
)
1792 /* In case we need an open_confirm, no cleanup! */
1793 if (data
->o_res
.rflags
& NFS4_OPEN_RESULT_CONFIRM
)
1795 state
= nfs4_opendata_to_nfs4_state(data
);
1797 nfs4_close_state(state
, data
->o_arg
.fmode
);
1799 nfs4_opendata_put(data
);
1802 static const struct rpc_call_ops nfs4_open_ops
= {
1803 .rpc_call_prepare
= nfs4_open_prepare
,
1804 .rpc_call_done
= nfs4_open_done
,
1805 .rpc_release
= nfs4_open_release
,
1808 static int nfs4_run_open_task(struct nfs4_opendata
*data
, int isrecover
)
1810 struct inode
*dir
= data
->dir
->d_inode
;
1811 struct nfs_server
*server
= NFS_SERVER(dir
);
1812 struct nfs_openargs
*o_arg
= &data
->o_arg
;
1813 struct nfs_openres
*o_res
= &data
->o_res
;
1814 struct rpc_task
*task
;
1815 struct rpc_message msg
= {
1816 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_OPEN
],
1819 .rpc_cred
= data
->owner
->so_cred
,
1821 struct rpc_task_setup task_setup_data
= {
1822 .rpc_client
= server
->client
,
1823 .rpc_message
= &msg
,
1824 .callback_ops
= &nfs4_open_ops
,
1825 .callback_data
= data
,
1826 .workqueue
= nfsiod_workqueue
,
1827 .flags
= RPC_TASK_ASYNC
,
1831 nfs4_init_sequence(&o_arg
->seq_args
, &o_res
->seq_res
, 1);
1832 kref_get(&data
->kref
);
1834 data
->rpc_status
= 0;
1835 data
->cancelled
= 0;
1836 data
->is_recover
= 0;
1838 nfs4_set_sequence_privileged(&o_arg
->seq_args
);
1839 data
->is_recover
= 1;
1841 task
= rpc_run_task(&task_setup_data
);
1843 return PTR_ERR(task
);
1844 status
= nfs4_wait_for_completion_rpc_task(task
);
1846 data
->cancelled
= 1;
1849 status
= data
->rpc_status
;
1855 static int _nfs4_recover_proc_open(struct nfs4_opendata
*data
)
1857 struct inode
*dir
= data
->dir
->d_inode
;
1858 struct nfs_openres
*o_res
= &data
->o_res
;
1861 status
= nfs4_run_open_task(data
, 1);
1862 if (status
!= 0 || !data
->rpc_done
)
1865 nfs_fattr_map_and_free_names(NFS_SERVER(dir
), &data
->f_attr
);
1867 if (o_res
->rflags
& NFS4_OPEN_RESULT_CONFIRM
) {
1868 status
= _nfs4_proc_open_confirm(data
);
1876 static int nfs4_opendata_access(struct rpc_cred
*cred
,
1877 struct nfs4_opendata
*opendata
,
1878 struct nfs4_state
*state
, fmode_t fmode
,
1881 struct nfs_access_entry cache
;
1884 /* access call failed or for some reason the server doesn't
1885 * support any access modes -- defer access call until later */
1886 if (opendata
->o_res
.access_supported
== 0)
1890 /* don't check MAY_WRITE - a newly created file may not have
1891 * write mode bits, but POSIX allows the creating process to write.
1892 * use openflags to check for exec, because fmode won't
1893 * always have FMODE_EXEC set when file open for exec. */
1894 if (openflags
& __FMODE_EXEC
) {
1895 /* ONLY check for exec rights */
1897 } else if (fmode
& FMODE_READ
)
1901 cache
.jiffies
= jiffies
;
1902 nfs_access_set_mask(&cache
, opendata
->o_res
.access_result
);
1903 nfs_access_add_cache(state
->inode
, &cache
);
1905 if ((mask
& ~cache
.mask
& (MAY_READ
| MAY_EXEC
)) == 0)
1908 /* even though OPEN succeeded, access is denied. Close the file */
1909 nfs4_close_state(state
, fmode
);
1914 * Note: On error, nfs4_proc_open will free the struct nfs4_opendata
1916 static int _nfs4_proc_open(struct nfs4_opendata
*data
)
1918 struct inode
*dir
= data
->dir
->d_inode
;
1919 struct nfs_server
*server
= NFS_SERVER(dir
);
1920 struct nfs_openargs
*o_arg
= &data
->o_arg
;
1921 struct nfs_openres
*o_res
= &data
->o_res
;
1924 status
= nfs4_run_open_task(data
, 0);
1925 if (!data
->rpc_done
)
1928 if (status
== -NFS4ERR_BADNAME
&&
1929 !(o_arg
->open_flags
& O_CREAT
))
1934 nfs_fattr_map_and_free_names(server
, &data
->f_attr
);
1936 if (o_arg
->open_flags
& O_CREAT
)
1937 update_changeattr(dir
, &o_res
->cinfo
);
1938 if ((o_res
->rflags
& NFS4_OPEN_RESULT_LOCKTYPE_POSIX
) == 0)
1939 server
->caps
&= ~NFS_CAP_POSIX_LOCK
;
1940 if(o_res
->rflags
& NFS4_OPEN_RESULT_CONFIRM
) {
1941 status
= _nfs4_proc_open_confirm(data
);
1945 if (!(o_res
->f_attr
->valid
& NFS_ATTR_FATTR
))
1946 _nfs4_proc_getattr(server
, &o_res
->fh
, o_res
->f_attr
, o_res
->f_label
);
1950 static int nfs4_recover_expired_lease(struct nfs_server
*server
)
1952 return nfs4_client_recover_expired_lease(server
->nfs_client
);
1957 * reclaim state on the server after a network partition.
1958 * Assumes caller holds the appropriate lock
1960 static int _nfs4_open_expired(struct nfs_open_context
*ctx
, struct nfs4_state
*state
)
1962 struct nfs4_opendata
*opendata
;
1965 opendata
= nfs4_open_recoverdata_alloc(ctx
, state
,
1966 NFS4_OPEN_CLAIM_FH
);
1967 if (IS_ERR(opendata
))
1968 return PTR_ERR(opendata
);
1969 ret
= nfs4_open_recover(opendata
, state
);
1971 d_drop(ctx
->dentry
);
1972 nfs4_opendata_put(opendata
);
1976 static int nfs4_do_open_expired(struct nfs_open_context
*ctx
, struct nfs4_state
*state
)
1978 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
1979 struct nfs4_exception exception
= { };
1983 err
= _nfs4_open_expired(ctx
, state
);
1984 trace_nfs4_open_expired(ctx
, 0, err
);
1985 if (nfs4_clear_cap_atomic_open_v1(server
, err
, &exception
))
1990 case -NFS4ERR_GRACE
:
1991 case -NFS4ERR_DELAY
:
1992 nfs4_handle_exception(server
, err
, &exception
);
1995 } while (exception
.retry
);
2000 static int nfs4_open_expired(struct nfs4_state_owner
*sp
, struct nfs4_state
*state
)
2002 struct nfs_open_context
*ctx
;
2005 ctx
= nfs4_state_find_open_context(state
);
2008 ret
= nfs4_do_open_expired(ctx
, state
);
2009 put_nfs_open_context(ctx
);
2013 #if defined(CONFIG_NFS_V4_1)
2014 static void nfs41_clear_delegation_stateid(struct nfs4_state
*state
)
2016 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
2017 nfs4_stateid
*stateid
= &state
->stateid
;
2018 struct nfs_delegation
*delegation
;
2019 struct rpc_cred
*cred
= NULL
;
2020 int status
= -NFS4ERR_BAD_STATEID
;
2022 /* If a state reset has been done, test_stateid is unneeded */
2023 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) == 0)
2026 /* Get the delegation credential for use by test/free_stateid */
2028 delegation
= rcu_dereference(NFS_I(state
->inode
)->delegation
);
2029 if (delegation
!= NULL
&&
2030 nfs4_stateid_match(&delegation
->stateid
, stateid
)) {
2031 cred
= get_rpccred(delegation
->cred
);
2033 status
= nfs41_test_stateid(server
, stateid
, cred
);
2034 trace_nfs4_test_delegation_stateid(state
, NULL
, status
);
2038 if (status
!= NFS_OK
) {
2039 /* Free the stateid unless the server explicitly
2040 * informs us the stateid is unrecognized. */
2041 if (status
!= -NFS4ERR_BAD_STATEID
)
2042 nfs41_free_stateid(server
, stateid
, cred
);
2043 nfs_remove_bad_delegation(state
->inode
);
2045 write_seqlock(&state
->seqlock
);
2046 nfs4_stateid_copy(&state
->stateid
, &state
->open_stateid
);
2047 write_sequnlock(&state
->seqlock
);
2048 clear_bit(NFS_DELEGATED_STATE
, &state
->flags
);
2056 * nfs41_check_open_stateid - possibly free an open stateid
2058 * @state: NFSv4 state for an inode
2060 * Returns NFS_OK if recovery for this stateid is now finished.
2061 * Otherwise a negative NFS4ERR value is returned.
2063 static int nfs41_check_open_stateid(struct nfs4_state
*state
)
2065 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
2066 nfs4_stateid
*stateid
= &state
->open_stateid
;
2067 struct rpc_cred
*cred
= state
->owner
->so_cred
;
2070 /* If a state reset has been done, test_stateid is unneeded */
2071 if ((test_bit(NFS_O_RDONLY_STATE
, &state
->flags
) == 0) &&
2072 (test_bit(NFS_O_WRONLY_STATE
, &state
->flags
) == 0) &&
2073 (test_bit(NFS_O_RDWR_STATE
, &state
->flags
) == 0))
2074 return -NFS4ERR_BAD_STATEID
;
2076 status
= nfs41_test_stateid(server
, stateid
, cred
);
2077 trace_nfs4_test_open_stateid(state
, NULL
, status
);
2078 if (status
!= NFS_OK
) {
2079 /* Free the stateid unless the server explicitly
2080 * informs us the stateid is unrecognized. */
2081 if (status
!= -NFS4ERR_BAD_STATEID
)
2082 nfs41_free_stateid(server
, stateid
, cred
);
2084 clear_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
2085 clear_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
2086 clear_bit(NFS_O_RDWR_STATE
, &state
->flags
);
2087 clear_bit(NFS_OPEN_STATE
, &state
->flags
);
2092 static int nfs41_open_expired(struct nfs4_state_owner
*sp
, struct nfs4_state
*state
)
2096 nfs41_clear_delegation_stateid(state
);
2097 status
= nfs41_check_open_stateid(state
);
2098 if (status
!= NFS_OK
)
2099 status
= nfs4_open_expired(sp
, state
);
2105 * on an EXCLUSIVE create, the server should send back a bitmask with FATTR4-*
2106 * fields corresponding to attributes that were used to store the verifier.
2107 * Make sure we clobber those fields in the later setattr call
2109 static inline void nfs4_exclusive_attrset(struct nfs4_opendata
*opendata
, struct iattr
*sattr
)
2111 if ((opendata
->o_res
.attrset
[1] & FATTR4_WORD1_TIME_ACCESS
) &&
2112 !(sattr
->ia_valid
& ATTR_ATIME_SET
))
2113 sattr
->ia_valid
|= ATTR_ATIME
;
2115 if ((opendata
->o_res
.attrset
[1] & FATTR4_WORD1_TIME_MODIFY
) &&
2116 !(sattr
->ia_valid
& ATTR_MTIME_SET
))
2117 sattr
->ia_valid
|= ATTR_MTIME
;
2120 static int _nfs4_open_and_get_state(struct nfs4_opendata
*opendata
,
2123 struct nfs_open_context
*ctx
)
2125 struct nfs4_state_owner
*sp
= opendata
->owner
;
2126 struct nfs_server
*server
= sp
->so_server
;
2127 struct dentry
*dentry
;
2128 struct nfs4_state
*state
;
2132 seq
= raw_seqcount_begin(&sp
->so_reclaim_seqcount
);
2134 ret
= _nfs4_proc_open(opendata
);
2138 state
= nfs4_opendata_to_nfs4_state(opendata
);
2139 ret
= PTR_ERR(state
);
2142 if (server
->caps
& NFS_CAP_POSIX_LOCK
)
2143 set_bit(NFS_STATE_POSIX_LOCKS
, &state
->flags
);
2145 dentry
= opendata
->dentry
;
2146 if (dentry
->d_inode
== NULL
) {
2147 /* FIXME: Is this d_drop() ever needed? */
2149 dentry
= d_add_unique(dentry
, igrab(state
->inode
));
2150 if (dentry
== NULL
) {
2151 dentry
= opendata
->dentry
;
2152 } else if (dentry
!= ctx
->dentry
) {
2154 ctx
->dentry
= dget(dentry
);
2156 nfs_set_verifier(dentry
,
2157 nfs_save_change_attribute(opendata
->dir
->d_inode
));
2160 ret
= nfs4_opendata_access(sp
->so_cred
, opendata
, state
, fmode
, flags
);
2165 if (dentry
->d_inode
== state
->inode
) {
2166 nfs_inode_attach_open_context(ctx
);
2167 if (read_seqcount_retry(&sp
->so_reclaim_seqcount
, seq
))
2168 nfs4_schedule_stateid_recovery(server
, state
);
2175 * Returns a referenced nfs4_state
2177 static int _nfs4_do_open(struct inode
*dir
,
2178 struct nfs_open_context
*ctx
,
2180 struct iattr
*sattr
,
2181 struct nfs4_label
*label
)
2183 struct nfs4_state_owner
*sp
;
2184 struct nfs4_state
*state
= NULL
;
2185 struct nfs_server
*server
= NFS_SERVER(dir
);
2186 struct nfs4_opendata
*opendata
;
2187 struct dentry
*dentry
= ctx
->dentry
;
2188 struct rpc_cred
*cred
= ctx
->cred
;
2189 struct nfs4_threshold
**ctx_th
= &ctx
->mdsthreshold
;
2190 fmode_t fmode
= ctx
->mode
& (FMODE_READ
|FMODE_WRITE
|FMODE_EXEC
);
2191 enum open_claim_type4 claim
= NFS4_OPEN_CLAIM_NULL
;
2192 struct nfs4_label
*olabel
= NULL
;
2195 /* Protect against reboot recovery conflicts */
2197 sp
= nfs4_get_state_owner(server
, cred
, GFP_KERNEL
);
2199 dprintk("nfs4_do_open: nfs4_get_state_owner failed!\n");
2202 status
= nfs4_recover_expired_lease(server
);
2204 goto err_put_state_owner
;
2205 if (dentry
->d_inode
!= NULL
)
2206 nfs4_return_incompatible_delegation(dentry
->d_inode
, fmode
);
2208 if (dentry
->d_inode
)
2209 claim
= NFS4_OPEN_CLAIM_FH
;
2210 opendata
= nfs4_opendata_alloc(dentry
, sp
, fmode
, flags
, sattr
,
2211 label
, claim
, GFP_KERNEL
);
2212 if (opendata
== NULL
)
2213 goto err_put_state_owner
;
2216 olabel
= nfs4_label_alloc(server
, GFP_KERNEL
);
2217 if (IS_ERR(olabel
)) {
2218 status
= PTR_ERR(olabel
);
2219 goto err_opendata_put
;
2223 if (ctx_th
&& server
->attr_bitmask
[2] & FATTR4_WORD2_MDSTHRESHOLD
) {
2224 opendata
->f_attr
.mdsthreshold
= pnfs_mdsthreshold_alloc();
2225 if (!opendata
->f_attr
.mdsthreshold
)
2226 goto err_free_label
;
2227 opendata
->o_arg
.open_bitmap
= &nfs4_pnfs_open_bitmap
[0];
2229 if (dentry
->d_inode
!= NULL
)
2230 opendata
->state
= nfs4_get_open_state(dentry
->d_inode
, sp
);
2232 status
= _nfs4_open_and_get_state(opendata
, fmode
, flags
, ctx
);
2234 goto err_free_label
;
2237 if ((opendata
->o_arg
.open_flags
& O_EXCL
) &&
2238 (opendata
->o_arg
.createmode
!= NFS4_CREATE_GUARDED
)) {
2239 nfs4_exclusive_attrset(opendata
, sattr
);
2241 nfs_fattr_init(opendata
->o_res
.f_attr
);
2242 status
= nfs4_do_setattr(state
->inode
, cred
,
2243 opendata
->o_res
.f_attr
, sattr
,
2244 state
, label
, olabel
);
2246 nfs_setattr_update_inode(state
->inode
, sattr
);
2247 nfs_post_op_update_inode(state
->inode
, opendata
->o_res
.f_attr
);
2248 nfs_setsecurity(state
->inode
, opendata
->o_res
.f_attr
, olabel
);
2252 if (pnfs_use_threshold(ctx_th
, opendata
->f_attr
.mdsthreshold
, server
))
2253 *ctx_th
= opendata
->f_attr
.mdsthreshold
;
2255 kfree(opendata
->f_attr
.mdsthreshold
);
2256 opendata
->f_attr
.mdsthreshold
= NULL
;
2258 nfs4_label_free(olabel
);
2260 nfs4_opendata_put(opendata
);
2261 nfs4_put_state_owner(sp
);
2264 nfs4_label_free(olabel
);
2266 kfree(opendata
->f_attr
.mdsthreshold
);
2267 nfs4_opendata_put(opendata
);
2268 err_put_state_owner
:
2269 nfs4_put_state_owner(sp
);
2275 static struct nfs4_state
*nfs4_do_open(struct inode
*dir
,
2276 struct nfs_open_context
*ctx
,
2278 struct iattr
*sattr
,
2279 struct nfs4_label
*label
)
2281 struct nfs_server
*server
= NFS_SERVER(dir
);
2282 struct nfs4_exception exception
= { };
2283 struct nfs4_state
*res
;
2287 status
= _nfs4_do_open(dir
, ctx
, flags
, sattr
, label
);
2289 trace_nfs4_open_file(ctx
, flags
, status
);
2292 /* NOTE: BAD_SEQID means the server and client disagree about the
2293 * book-keeping w.r.t. state-changing operations
2294 * (OPEN/CLOSE/LOCK/LOCKU...)
2295 * It is actually a sign of a bug on the client or on the server.
2297 * If we receive a BAD_SEQID error in the particular case of
2298 * doing an OPEN, we assume that nfs_increment_open_seqid() will
2299 * have unhashed the old state_owner for us, and that we can
2300 * therefore safely retry using a new one. We should still warn
2301 * the user though...
2303 if (status
== -NFS4ERR_BAD_SEQID
) {
2304 pr_warn_ratelimited("NFS: v4 server %s "
2305 " returned a bad sequence-id error!\n",
2306 NFS_SERVER(dir
)->nfs_client
->cl_hostname
);
2307 exception
.retry
= 1;
2311 * BAD_STATEID on OPEN means that the server cancelled our
2312 * state before it received the OPEN_CONFIRM.
2313 * Recover by retrying the request as per the discussion
2314 * on Page 181 of RFC3530.
2316 if (status
== -NFS4ERR_BAD_STATEID
) {
2317 exception
.retry
= 1;
2320 if (status
== -EAGAIN
) {
2321 /* We must have found a delegation */
2322 exception
.retry
= 1;
2325 if (nfs4_clear_cap_atomic_open_v1(server
, status
, &exception
))
2327 res
= ERR_PTR(nfs4_handle_exception(server
,
2328 status
, &exception
));
2329 } while (exception
.retry
);
2333 static int _nfs4_do_setattr(struct inode
*inode
, struct rpc_cred
*cred
,
2334 struct nfs_fattr
*fattr
, struct iattr
*sattr
,
2335 struct nfs4_state
*state
, struct nfs4_label
*ilabel
,
2336 struct nfs4_label
*olabel
)
2338 struct nfs_server
*server
= NFS_SERVER(inode
);
2339 struct nfs_setattrargs arg
= {
2340 .fh
= NFS_FH(inode
),
2343 .bitmask
= server
->attr_bitmask
,
2346 struct nfs_setattrres res
= {
2351 struct rpc_message msg
= {
2352 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETATTR
],
2357 unsigned long timestamp
= jiffies
;
2362 arg
.bitmask
= nfs4_bitmask(server
, ilabel
);
2364 arg
.bitmask
= nfs4_bitmask(server
, olabel
);
2366 nfs_fattr_init(fattr
);
2368 /* Servers should only apply open mode checks for file size changes */
2369 truncate
= (sattr
->ia_valid
& ATTR_SIZE
) ? true : false;
2370 fmode
= truncate
? FMODE_WRITE
: FMODE_READ
;
2372 if (nfs4_copy_delegation_stateid(&arg
.stateid
, inode
, fmode
)) {
2373 /* Use that stateid */
2374 } else if (truncate
&& state
!= NULL
&& nfs4_valid_open_stateid(state
)) {
2375 struct nfs_lockowner lockowner
= {
2376 .l_owner
= current
->files
,
2377 .l_pid
= current
->tgid
,
2379 nfs4_select_rw_stateid(&arg
.stateid
, state
, FMODE_WRITE
,
2382 nfs4_stateid_copy(&arg
.stateid
, &zero_stateid
);
2384 status
= nfs4_call_sync(server
->client
, server
, &msg
, &arg
.seq_args
, &res
.seq_res
, 1);
2385 if (status
== 0 && state
!= NULL
)
2386 renew_lease(server
, timestamp
);
2390 static int nfs4_do_setattr(struct inode
*inode
, struct rpc_cred
*cred
,
2391 struct nfs_fattr
*fattr
, struct iattr
*sattr
,
2392 struct nfs4_state
*state
, struct nfs4_label
*ilabel
,
2393 struct nfs4_label
*olabel
)
2395 struct nfs_server
*server
= NFS_SERVER(inode
);
2396 struct nfs4_exception exception
= {
2402 err
= _nfs4_do_setattr(inode
, cred
, fattr
, sattr
, state
, ilabel
, olabel
);
2403 trace_nfs4_setattr(inode
, err
);
2405 case -NFS4ERR_OPENMODE
:
2406 if (!(sattr
->ia_valid
& ATTR_SIZE
)) {
2407 pr_warn_once("NFSv4: server %s is incorrectly "
2408 "applying open mode checks to "
2409 "a SETATTR that is not "
2410 "changing file size.\n",
2411 server
->nfs_client
->cl_hostname
);
2413 if (state
&& !(state
->state
& FMODE_WRITE
)) {
2415 if (sattr
->ia_valid
& ATTR_OPEN
)
2420 err
= nfs4_handle_exception(server
, err
, &exception
);
2421 } while (exception
.retry
);
2426 struct nfs4_closedata
{
2427 struct inode
*inode
;
2428 struct nfs4_state
*state
;
2429 struct nfs_closeargs arg
;
2430 struct nfs_closeres res
;
2431 struct nfs_fattr fattr
;
2432 unsigned long timestamp
;
2437 static void nfs4_free_closedata(void *data
)
2439 struct nfs4_closedata
*calldata
= data
;
2440 struct nfs4_state_owner
*sp
= calldata
->state
->owner
;
2441 struct super_block
*sb
= calldata
->state
->inode
->i_sb
;
2444 pnfs_roc_release(calldata
->state
->inode
);
2445 nfs4_put_open_state(calldata
->state
);
2446 nfs_free_seqid(calldata
->arg
.seqid
);
2447 nfs4_put_state_owner(sp
);
2448 nfs_sb_deactive(sb
);
2452 static void nfs4_close_clear_stateid_flags(struct nfs4_state
*state
,
2455 spin_lock(&state
->owner
->so_lock
);
2456 clear_bit(NFS_O_RDWR_STATE
, &state
->flags
);
2457 switch (fmode
& (FMODE_READ
|FMODE_WRITE
)) {
2459 clear_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
2462 clear_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
2465 clear_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
2466 clear_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
2467 clear_bit(NFS_OPEN_STATE
, &state
->flags
);
2469 spin_unlock(&state
->owner
->so_lock
);
2472 static void nfs4_close_done(struct rpc_task
*task
, void *data
)
2474 struct nfs4_closedata
*calldata
= data
;
2475 struct nfs4_state
*state
= calldata
->state
;
2476 struct nfs_server
*server
= NFS_SERVER(calldata
->inode
);
2478 dprintk("%s: begin!\n", __func__
);
2479 if (!nfs4_sequence_done(task
, &calldata
->res
.seq_res
))
2481 trace_nfs4_close(state
, &calldata
->arg
, &calldata
->res
, task
->tk_status
);
2482 /* hmm. we are done with the inode, and in the process of freeing
2483 * the state_owner. we keep this around to process errors
2485 switch (task
->tk_status
) {
2488 pnfs_roc_set_barrier(state
->inode
,
2489 calldata
->roc_barrier
);
2490 nfs_set_open_stateid(state
, &calldata
->res
.stateid
, 0);
2491 renew_lease(server
, calldata
->timestamp
);
2492 nfs4_close_clear_stateid_flags(state
,
2493 calldata
->arg
.fmode
);
2495 case -NFS4ERR_STALE_STATEID
:
2496 case -NFS4ERR_OLD_STATEID
:
2497 case -NFS4ERR_BAD_STATEID
:
2498 case -NFS4ERR_EXPIRED
:
2499 if (calldata
->arg
.fmode
== 0)
2502 if (nfs4_async_handle_error(task
, server
, state
) == -EAGAIN
)
2503 rpc_restart_call_prepare(task
);
2505 nfs_release_seqid(calldata
->arg
.seqid
);
2506 nfs_refresh_inode(calldata
->inode
, calldata
->res
.fattr
);
2507 dprintk("%s: done, ret = %d!\n", __func__
, task
->tk_status
);
2510 static void nfs4_close_prepare(struct rpc_task
*task
, void *data
)
2512 struct nfs4_closedata
*calldata
= data
;
2513 struct nfs4_state
*state
= calldata
->state
;
2514 struct inode
*inode
= calldata
->inode
;
2517 dprintk("%s: begin!\n", __func__
);
2518 if (nfs_wait_on_sequence(calldata
->arg
.seqid
, task
) != 0)
2521 task
->tk_msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_OPEN_DOWNGRADE
];
2522 calldata
->arg
.fmode
= FMODE_READ
|FMODE_WRITE
;
2523 spin_lock(&state
->owner
->so_lock
);
2524 /* Calculate the change in open mode */
2525 if (state
->n_rdwr
== 0) {
2526 if (state
->n_rdonly
== 0) {
2527 call_close
|= test_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
2528 call_close
|= test_bit(NFS_O_RDWR_STATE
, &state
->flags
);
2529 calldata
->arg
.fmode
&= ~FMODE_READ
;
2531 if (state
->n_wronly
== 0) {
2532 call_close
|= test_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
2533 call_close
|= test_bit(NFS_O_RDWR_STATE
, &state
->flags
);
2534 calldata
->arg
.fmode
&= ~FMODE_WRITE
;
2537 if (!nfs4_valid_open_stateid(state
))
2539 spin_unlock(&state
->owner
->so_lock
);
2542 /* Note: exit _without_ calling nfs4_close_done */
2546 if (calldata
->arg
.fmode
== 0) {
2547 task
->tk_msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_CLOSE
];
2548 if (calldata
->roc
&&
2549 pnfs_roc_drain(inode
, &calldata
->roc_barrier
, task
)) {
2550 nfs_release_seqid(calldata
->arg
.seqid
);
2555 nfs_fattr_init(calldata
->res
.fattr
);
2556 calldata
->timestamp
= jiffies
;
2557 if (nfs4_setup_sequence(NFS_SERVER(inode
),
2558 &calldata
->arg
.seq_args
,
2559 &calldata
->res
.seq_res
,
2561 nfs_release_seqid(calldata
->arg
.seqid
);
2562 dprintk("%s: done!\n", __func__
);
2565 task
->tk_action
= NULL
;
2567 nfs4_sequence_done(task
, &calldata
->res
.seq_res
);
2570 static const struct rpc_call_ops nfs4_close_ops
= {
2571 .rpc_call_prepare
= nfs4_close_prepare
,
2572 .rpc_call_done
= nfs4_close_done
,
2573 .rpc_release
= nfs4_free_closedata
,
2577 * It is possible for data to be read/written from a mem-mapped file
2578 * after the sys_close call (which hits the vfs layer as a flush).
2579 * This means that we can't safely call nfsv4 close on a file until
2580 * the inode is cleared. This in turn means that we are not good
2581 * NFSv4 citizens - we do not indicate to the server to update the file's
2582 * share state even when we are done with one of the three share
2583 * stateid's in the inode.
2585 * NOTE: Caller must be holding the sp->so_owner semaphore!
2587 int nfs4_do_close(struct nfs4_state
*state
, gfp_t gfp_mask
, int wait
)
2589 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
2590 struct nfs4_closedata
*calldata
;
2591 struct nfs4_state_owner
*sp
= state
->owner
;
2592 struct rpc_task
*task
;
2593 struct rpc_message msg
= {
2594 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_CLOSE
],
2595 .rpc_cred
= state
->owner
->so_cred
,
2597 struct rpc_task_setup task_setup_data
= {
2598 .rpc_client
= server
->client
,
2599 .rpc_message
= &msg
,
2600 .callback_ops
= &nfs4_close_ops
,
2601 .workqueue
= nfsiod_workqueue
,
2602 .flags
= RPC_TASK_ASYNC
,
2604 int status
= -ENOMEM
;
2606 calldata
= kzalloc(sizeof(*calldata
), gfp_mask
);
2607 if (calldata
== NULL
)
2609 nfs4_init_sequence(&calldata
->arg
.seq_args
, &calldata
->res
.seq_res
, 1);
2610 calldata
->inode
= state
->inode
;
2611 calldata
->state
= state
;
2612 calldata
->arg
.fh
= NFS_FH(state
->inode
);
2613 calldata
->arg
.stateid
= &state
->open_stateid
;
2614 /* Serialization for the sequence id */
2615 calldata
->arg
.seqid
= nfs_alloc_seqid(&state
->owner
->so_seqid
, gfp_mask
);
2616 if (calldata
->arg
.seqid
== NULL
)
2617 goto out_free_calldata
;
2618 calldata
->arg
.fmode
= 0;
2619 calldata
->arg
.bitmask
= server
->cache_consistency_bitmask
;
2620 calldata
->res
.fattr
= &calldata
->fattr
;
2621 calldata
->res
.seqid
= calldata
->arg
.seqid
;
2622 calldata
->res
.server
= server
;
2623 calldata
->roc
= pnfs_roc(state
->inode
);
2624 nfs_sb_active(calldata
->inode
->i_sb
);
2626 msg
.rpc_argp
= &calldata
->arg
;
2627 msg
.rpc_resp
= &calldata
->res
;
2628 task_setup_data
.callback_data
= calldata
;
2629 task
= rpc_run_task(&task_setup_data
);
2631 return PTR_ERR(task
);
2634 status
= rpc_wait_for_completion_task(task
);
2640 nfs4_put_open_state(state
);
2641 nfs4_put_state_owner(sp
);
2645 static struct inode
*
2646 nfs4_atomic_open(struct inode
*dir
, struct nfs_open_context
*ctx
, int open_flags
, struct iattr
*attr
)
2648 struct nfs4_state
*state
;
2649 struct nfs4_label l
= {0, 0, 0, NULL
}, *label
= NULL
;
2651 label
= nfs4_label_init_security(dir
, ctx
->dentry
, attr
, &l
);
2653 /* Protect against concurrent sillydeletes */
2654 state
= nfs4_do_open(dir
, ctx
, open_flags
, attr
, label
);
2656 nfs4_label_release_security(label
);
2659 return ERR_CAST(state
);
2660 return state
->inode
;
2663 static void nfs4_close_context(struct nfs_open_context
*ctx
, int is_sync
)
2665 if (ctx
->state
== NULL
)
2668 nfs4_close_sync(ctx
->state
, ctx
->mode
);
2670 nfs4_close_state(ctx
->state
, ctx
->mode
);
2673 static int _nfs4_server_capabilities(struct nfs_server
*server
, struct nfs_fh
*fhandle
)
2675 struct nfs4_server_caps_arg args
= {
2678 struct nfs4_server_caps_res res
= {};
2679 struct rpc_message msg
= {
2680 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SERVER_CAPS
],
2686 status
= nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
2688 memcpy(server
->attr_bitmask
, res
.attr_bitmask
, sizeof(server
->attr_bitmask
));
2689 server
->caps
&= ~(NFS_CAP_ACLS
|NFS_CAP_HARDLINKS
|
2690 NFS_CAP_SYMLINKS
|NFS_CAP_FILEID
|
2691 NFS_CAP_MODE
|NFS_CAP_NLINK
|NFS_CAP_OWNER
|
2692 NFS_CAP_OWNER_GROUP
|NFS_CAP_ATIME
|
2693 NFS_CAP_CTIME
|NFS_CAP_MTIME
);
2694 if (res
.attr_bitmask
[0] & FATTR4_WORD0_ACL
)
2695 server
->caps
|= NFS_CAP_ACLS
;
2696 if (res
.has_links
!= 0)
2697 server
->caps
|= NFS_CAP_HARDLINKS
;
2698 if (res
.has_symlinks
!= 0)
2699 server
->caps
|= NFS_CAP_SYMLINKS
;
2700 if (res
.attr_bitmask
[0] & FATTR4_WORD0_FILEID
)
2701 server
->caps
|= NFS_CAP_FILEID
;
2702 if (res
.attr_bitmask
[1] & FATTR4_WORD1_MODE
)
2703 server
->caps
|= NFS_CAP_MODE
;
2704 if (res
.attr_bitmask
[1] & FATTR4_WORD1_NUMLINKS
)
2705 server
->caps
|= NFS_CAP_NLINK
;
2706 if (res
.attr_bitmask
[1] & FATTR4_WORD1_OWNER
)
2707 server
->caps
|= NFS_CAP_OWNER
;
2708 if (res
.attr_bitmask
[1] & FATTR4_WORD1_OWNER_GROUP
)
2709 server
->caps
|= NFS_CAP_OWNER_GROUP
;
2710 if (res
.attr_bitmask
[1] & FATTR4_WORD1_TIME_ACCESS
)
2711 server
->caps
|= NFS_CAP_ATIME
;
2712 if (res
.attr_bitmask
[1] & FATTR4_WORD1_TIME_METADATA
)
2713 server
->caps
|= NFS_CAP_CTIME
;
2714 if (res
.attr_bitmask
[1] & FATTR4_WORD1_TIME_MODIFY
)
2715 server
->caps
|= NFS_CAP_MTIME
;
2716 #ifdef CONFIG_NFS_V4_SECURITY_LABEL
2717 if (res
.attr_bitmask
[2] & FATTR4_WORD2_SECURITY_LABEL
)
2718 server
->caps
|= NFS_CAP_SECURITY_LABEL
;
2720 memcpy(server
->attr_bitmask_nl
, res
.attr_bitmask
,
2721 sizeof(server
->attr_bitmask
));
2723 if (server
->caps
& NFS_CAP_SECURITY_LABEL
) {
2724 server
->attr_bitmask_nl
[2] &= ~FATTR4_WORD2_SECURITY_LABEL
;
2725 res
.attr_bitmask
[2] &= ~FATTR4_WORD2_SECURITY_LABEL
;
2727 memcpy(server
->cache_consistency_bitmask
, res
.attr_bitmask
, sizeof(server
->cache_consistency_bitmask
));
2728 server
->cache_consistency_bitmask
[0] &= FATTR4_WORD0_CHANGE
|FATTR4_WORD0_SIZE
;
2729 server
->cache_consistency_bitmask
[1] &= FATTR4_WORD1_TIME_METADATA
|FATTR4_WORD1_TIME_MODIFY
;
2730 server
->acl_bitmask
= res
.acl_bitmask
;
2731 server
->fh_expire_type
= res
.fh_expire_type
;
2737 int nfs4_server_capabilities(struct nfs_server
*server
, struct nfs_fh
*fhandle
)
2739 struct nfs4_exception exception
= { };
2742 err
= nfs4_handle_exception(server
,
2743 _nfs4_server_capabilities(server
, fhandle
),
2745 } while (exception
.retry
);
2749 static int _nfs4_lookup_root(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
2750 struct nfs_fsinfo
*info
)
2753 struct nfs4_lookup_root_arg args
= {
2756 struct nfs4_lookup_res res
= {
2758 .fattr
= info
->fattr
,
2761 struct rpc_message msg
= {
2762 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOOKUP_ROOT
],
2767 bitmask
[0] = nfs4_fattr_bitmap
[0];
2768 bitmask
[1] = nfs4_fattr_bitmap
[1];
2770 * Process the label in the upcoming getfattr
2772 bitmask
[2] = nfs4_fattr_bitmap
[2] & ~FATTR4_WORD2_SECURITY_LABEL
;
2774 nfs_fattr_init(info
->fattr
);
2775 return nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
2778 static int nfs4_lookup_root(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
2779 struct nfs_fsinfo
*info
)
2781 struct nfs4_exception exception
= { };
2784 err
= _nfs4_lookup_root(server
, fhandle
, info
);
2785 trace_nfs4_lookup_root(server
, fhandle
, info
->fattr
, err
);
2788 case -NFS4ERR_WRONGSEC
:
2791 err
= nfs4_handle_exception(server
, err
, &exception
);
2793 } while (exception
.retry
);
2798 static int nfs4_lookup_root_sec(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
2799 struct nfs_fsinfo
*info
, rpc_authflavor_t flavor
)
2801 struct rpc_auth_create_args auth_args
= {
2802 .pseudoflavor
= flavor
,
2804 struct rpc_auth
*auth
;
2807 auth
= rpcauth_create(&auth_args
, server
->client
);
2812 ret
= nfs4_lookup_root(server
, fhandle
, info
);
2818 * Retry pseudoroot lookup with various security flavors. We do this when:
2820 * NFSv4.0: the PUTROOTFH operation returns NFS4ERR_WRONGSEC
2821 * NFSv4.1: the server does not support the SECINFO_NO_NAME operation
2823 * Returns zero on success, or a negative NFS4ERR value, or a
2824 * negative errno value.
2826 static int nfs4_find_root_sec(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
2827 struct nfs_fsinfo
*info
)
2829 /* Per 3530bis 15.33.5 */
2830 static const rpc_authflavor_t flav_array
[] = {
2834 RPC_AUTH_UNIX
, /* courtesy */
2837 int status
= -EPERM
;
2840 for (i
= 0; i
< ARRAY_SIZE(flav_array
); i
++) {
2841 status
= nfs4_lookup_root_sec(server
, fhandle
, info
, flav_array
[i
]);
2842 if (status
== -NFS4ERR_WRONGSEC
|| status
== -EACCES
)
2848 * -EACCESS could mean that the user doesn't have correct permissions
2849 * to access the mount. It could also mean that we tried to mount
2850 * with a gss auth flavor, but rpc.gssd isn't running. Either way,
2851 * existing mount programs don't handle -EACCES very well so it should
2852 * be mapped to -EPERM instead.
2854 if (status
== -EACCES
)
2859 static int nfs4_do_find_root_sec(struct nfs_server
*server
,
2860 struct nfs_fh
*fhandle
, struct nfs_fsinfo
*info
)
2862 int mv
= server
->nfs_client
->cl_minorversion
;
2863 return nfs_v4_minor_ops
[mv
]->find_root_sec(server
, fhandle
, info
);
2867 * nfs4_proc_get_rootfh - get file handle for server's pseudoroot
2868 * @server: initialized nfs_server handle
2869 * @fhandle: we fill in the pseudo-fs root file handle
2870 * @info: we fill in an FSINFO struct
2872 * Returns zero on success, or a negative errno.
2874 int nfs4_proc_get_rootfh(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
2875 struct nfs_fsinfo
*info
)
2879 status
= nfs4_lookup_root(server
, fhandle
, info
);
2880 if ((status
== -NFS4ERR_WRONGSEC
) &&
2881 !(server
->flags
& NFS_MOUNT_SECFLAVOUR
))
2882 status
= nfs4_do_find_root_sec(server
, fhandle
, info
);
2885 status
= nfs4_server_capabilities(server
, fhandle
);
2887 status
= nfs4_do_fsinfo(server
, fhandle
, info
);
2889 return nfs4_map_errors(status
);
2892 static int nfs4_proc_get_root(struct nfs_server
*server
, struct nfs_fh
*mntfh
,
2893 struct nfs_fsinfo
*info
)
2896 struct nfs_fattr
*fattr
= info
->fattr
;
2897 struct nfs4_label
*label
= NULL
;
2899 error
= nfs4_server_capabilities(server
, mntfh
);
2901 dprintk("nfs4_get_root: getcaps error = %d\n", -error
);
2905 label
= nfs4_label_alloc(server
, GFP_KERNEL
);
2907 return PTR_ERR(label
);
2909 error
= nfs4_proc_getattr(server
, mntfh
, fattr
, label
);
2911 dprintk("nfs4_get_root: getattr error = %d\n", -error
);
2912 goto err_free_label
;
2915 if (fattr
->valid
& NFS_ATTR_FATTR_FSID
&&
2916 !nfs_fsid_equal(&server
->fsid
, &fattr
->fsid
))
2917 memcpy(&server
->fsid
, &fattr
->fsid
, sizeof(server
->fsid
));
2920 nfs4_label_free(label
);
2926 * Get locations and (maybe) other attributes of a referral.
2927 * Note that we'll actually follow the referral later when
2928 * we detect fsid mismatch in inode revalidation
2930 static int nfs4_get_referral(struct rpc_clnt
*client
, struct inode
*dir
,
2931 const struct qstr
*name
, struct nfs_fattr
*fattr
,
2932 struct nfs_fh
*fhandle
)
2934 int status
= -ENOMEM
;
2935 struct page
*page
= NULL
;
2936 struct nfs4_fs_locations
*locations
= NULL
;
2938 page
= alloc_page(GFP_KERNEL
);
2941 locations
= kmalloc(sizeof(struct nfs4_fs_locations
), GFP_KERNEL
);
2942 if (locations
== NULL
)
2945 status
= nfs4_proc_fs_locations(client
, dir
, name
, locations
, page
);
2948 /* Make sure server returned a different fsid for the referral */
2949 if (nfs_fsid_equal(&NFS_SERVER(dir
)->fsid
, &locations
->fattr
.fsid
)) {
2950 dprintk("%s: server did not return a different fsid for"
2951 " a referral at %s\n", __func__
, name
->name
);
2955 /* Fixup attributes for the nfs_lookup() call to nfs_fhget() */
2956 nfs_fixup_referral_attributes(&locations
->fattr
);
2958 /* replace the lookup nfs_fattr with the locations nfs_fattr */
2959 memcpy(fattr
, &locations
->fattr
, sizeof(struct nfs_fattr
));
2960 memset(fhandle
, 0, sizeof(struct nfs_fh
));
2968 static int _nfs4_proc_getattr(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
2969 struct nfs_fattr
*fattr
, struct nfs4_label
*label
)
2971 struct nfs4_getattr_arg args
= {
2973 .bitmask
= server
->attr_bitmask
,
2975 struct nfs4_getattr_res res
= {
2980 struct rpc_message msg
= {
2981 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GETATTR
],
2986 args
.bitmask
= nfs4_bitmask(server
, label
);
2988 nfs_fattr_init(fattr
);
2989 return nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
2992 static int nfs4_proc_getattr(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
2993 struct nfs_fattr
*fattr
, struct nfs4_label
*label
)
2995 struct nfs4_exception exception
= { };
2998 err
= _nfs4_proc_getattr(server
, fhandle
, fattr
, label
);
2999 trace_nfs4_getattr(server
, fhandle
, fattr
, err
);
3000 err
= nfs4_handle_exception(server
, err
,
3002 } while (exception
.retry
);
3007 * The file is not closed if it is opened due to the a request to change
3008 * the size of the file. The open call will not be needed once the
3009 * VFS layer lookup-intents are implemented.
3011 * Close is called when the inode is destroyed.
3012 * If we haven't opened the file for O_WRONLY, we
3013 * need to in the size_change case to obtain a stateid.
3016 * Because OPEN is always done by name in nfsv4, it is
3017 * possible that we opened a different file by the same
3018 * name. We can recognize this race condition, but we
3019 * can't do anything about it besides returning an error.
3021 * This will be fixed with VFS changes (lookup-intent).
3024 nfs4_proc_setattr(struct dentry
*dentry
, struct nfs_fattr
*fattr
,
3025 struct iattr
*sattr
)
3027 struct inode
*inode
= dentry
->d_inode
;
3028 struct rpc_cred
*cred
= NULL
;
3029 struct nfs4_state
*state
= NULL
;
3030 struct nfs4_label
*label
= NULL
;
3033 if (pnfs_ld_layoutret_on_setattr(inode
))
3034 pnfs_commit_and_return_layout(inode
);
3036 nfs_fattr_init(fattr
);
3038 /* Deal with open(O_TRUNC) */
3039 if (sattr
->ia_valid
& ATTR_OPEN
)
3040 sattr
->ia_valid
&= ~(ATTR_MTIME
|ATTR_CTIME
);
3042 /* Optimization: if the end result is no change, don't RPC */
3043 if ((sattr
->ia_valid
& ~(ATTR_FILE
|ATTR_OPEN
)) == 0)
3046 /* Search for an existing open(O_WRITE) file */
3047 if (sattr
->ia_valid
& ATTR_FILE
) {
3048 struct nfs_open_context
*ctx
;
3050 ctx
= nfs_file_open_context(sattr
->ia_file
);
3057 label
= nfs4_label_alloc(NFS_SERVER(inode
), GFP_KERNEL
);
3059 return PTR_ERR(label
);
3061 status
= nfs4_do_setattr(inode
, cred
, fattr
, sattr
, state
, NULL
, label
);
3063 nfs_setattr_update_inode(inode
, sattr
);
3064 nfs_setsecurity(inode
, fattr
, label
);
3066 nfs4_label_free(label
);
3070 static int _nfs4_proc_lookup(struct rpc_clnt
*clnt
, struct inode
*dir
,
3071 const struct qstr
*name
, struct nfs_fh
*fhandle
,
3072 struct nfs_fattr
*fattr
, struct nfs4_label
*label
)
3074 struct nfs_server
*server
= NFS_SERVER(dir
);
3076 struct nfs4_lookup_arg args
= {
3077 .bitmask
= server
->attr_bitmask
,
3078 .dir_fh
= NFS_FH(dir
),
3081 struct nfs4_lookup_res res
= {
3087 struct rpc_message msg
= {
3088 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOOKUP
],
3093 args
.bitmask
= nfs4_bitmask(server
, label
);
3095 nfs_fattr_init(fattr
);
3097 dprintk("NFS call lookup %s\n", name
->name
);
3098 status
= nfs4_call_sync(clnt
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
3099 dprintk("NFS reply lookup: %d\n", status
);
3103 static void nfs_fixup_secinfo_attributes(struct nfs_fattr
*fattr
)
3105 fattr
->valid
|= NFS_ATTR_FATTR_TYPE
| NFS_ATTR_FATTR_MODE
|
3106 NFS_ATTR_FATTR_NLINK
| NFS_ATTR_FATTR_MOUNTPOINT
;
3107 fattr
->mode
= S_IFDIR
| S_IRUGO
| S_IXUGO
;
3111 static int nfs4_proc_lookup_common(struct rpc_clnt
**clnt
, struct inode
*dir
,
3112 struct qstr
*name
, struct nfs_fh
*fhandle
,
3113 struct nfs_fattr
*fattr
, struct nfs4_label
*label
)
3115 struct nfs4_exception exception
= { };
3116 struct rpc_clnt
*client
= *clnt
;
3119 err
= _nfs4_proc_lookup(client
, dir
, name
, fhandle
, fattr
, label
);
3120 trace_nfs4_lookup(dir
, name
, err
);
3122 case -NFS4ERR_BADNAME
:
3125 case -NFS4ERR_MOVED
:
3126 err
= nfs4_get_referral(client
, dir
, name
, fattr
, fhandle
);
3128 case -NFS4ERR_WRONGSEC
:
3130 if (client
!= *clnt
)
3133 client
= nfs4_create_sec_client(client
, dir
, name
);
3135 return PTR_ERR(client
);
3137 exception
.retry
= 1;
3140 err
= nfs4_handle_exception(NFS_SERVER(dir
), err
, &exception
);
3142 } while (exception
.retry
);
3147 else if (client
!= *clnt
)
3148 rpc_shutdown_client(client
);
3153 static int nfs4_proc_lookup(struct inode
*dir
, struct qstr
*name
,
3154 struct nfs_fh
*fhandle
, struct nfs_fattr
*fattr
,
3155 struct nfs4_label
*label
)
3158 struct rpc_clnt
*client
= NFS_CLIENT(dir
);
3160 status
= nfs4_proc_lookup_common(&client
, dir
, name
, fhandle
, fattr
, label
);
3161 if (client
!= NFS_CLIENT(dir
)) {
3162 rpc_shutdown_client(client
);
3163 nfs_fixup_secinfo_attributes(fattr
);
3169 nfs4_proc_lookup_mountpoint(struct inode
*dir
, struct qstr
*name
,
3170 struct nfs_fh
*fhandle
, struct nfs_fattr
*fattr
)
3173 struct rpc_clnt
*client
= rpc_clone_client(NFS_CLIENT(dir
));
3175 status
= nfs4_proc_lookup_common(&client
, dir
, name
, fhandle
, fattr
, NULL
);
3177 rpc_shutdown_client(client
);
3178 return ERR_PTR(status
);
3183 static int _nfs4_proc_access(struct inode
*inode
, struct nfs_access_entry
*entry
)
3185 struct nfs_server
*server
= NFS_SERVER(inode
);
3186 struct nfs4_accessargs args
= {
3187 .fh
= NFS_FH(inode
),
3188 .bitmask
= server
->cache_consistency_bitmask
,
3190 struct nfs4_accessres res
= {
3193 struct rpc_message msg
= {
3194 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_ACCESS
],
3197 .rpc_cred
= entry
->cred
,
3199 int mode
= entry
->mask
;
3203 * Determine which access bits we want to ask for...
3205 if (mode
& MAY_READ
)
3206 args
.access
|= NFS4_ACCESS_READ
;
3207 if (S_ISDIR(inode
->i_mode
)) {
3208 if (mode
& MAY_WRITE
)
3209 args
.access
|= NFS4_ACCESS_MODIFY
| NFS4_ACCESS_EXTEND
| NFS4_ACCESS_DELETE
;
3210 if (mode
& MAY_EXEC
)
3211 args
.access
|= NFS4_ACCESS_LOOKUP
;
3213 if (mode
& MAY_WRITE
)
3214 args
.access
|= NFS4_ACCESS_MODIFY
| NFS4_ACCESS_EXTEND
;
3215 if (mode
& MAY_EXEC
)
3216 args
.access
|= NFS4_ACCESS_EXECUTE
;
3219 res
.fattr
= nfs_alloc_fattr();
3220 if (res
.fattr
== NULL
)
3223 status
= nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
3225 nfs_access_set_mask(entry
, res
.access
);
3226 nfs_refresh_inode(inode
, res
.fattr
);
3228 nfs_free_fattr(res
.fattr
);
3232 static int nfs4_proc_access(struct inode
*inode
, struct nfs_access_entry
*entry
)
3234 struct nfs4_exception exception
= { };
3237 err
= _nfs4_proc_access(inode
, entry
);
3238 trace_nfs4_access(inode
, err
);
3239 err
= nfs4_handle_exception(NFS_SERVER(inode
), err
,
3241 } while (exception
.retry
);
3246 * TODO: For the time being, we don't try to get any attributes
3247 * along with any of the zero-copy operations READ, READDIR,
3250 * In the case of the first three, we want to put the GETATTR
3251 * after the read-type operation -- this is because it is hard
3252 * to predict the length of a GETATTR response in v4, and thus
3253 * align the READ data correctly. This means that the GETATTR
3254 * may end up partially falling into the page cache, and we should
3255 * shift it into the 'tail' of the xdr_buf before processing.
3256 * To do this efficiently, we need to know the total length
3257 * of data received, which doesn't seem to be available outside
3260 * In the case of WRITE, we also want to put the GETATTR after
3261 * the operation -- in this case because we want to make sure
3262 * we get the post-operation mtime and size.
3264 * Both of these changes to the XDR layer would in fact be quite
3265 * minor, but I decided to leave them for a subsequent patch.
3267 static int _nfs4_proc_readlink(struct inode
*inode
, struct page
*page
,
3268 unsigned int pgbase
, unsigned int pglen
)
3270 struct nfs4_readlink args
= {
3271 .fh
= NFS_FH(inode
),
3276 struct nfs4_readlink_res res
;
3277 struct rpc_message msg
= {
3278 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_READLINK
],
3283 return nfs4_call_sync(NFS_SERVER(inode
)->client
, NFS_SERVER(inode
), &msg
, &args
.seq_args
, &res
.seq_res
, 0);
3286 static int nfs4_proc_readlink(struct inode
*inode
, struct page
*page
,
3287 unsigned int pgbase
, unsigned int pglen
)
3289 struct nfs4_exception exception
= { };
3292 err
= _nfs4_proc_readlink(inode
, page
, pgbase
, pglen
);
3293 trace_nfs4_readlink(inode
, err
);
3294 err
= nfs4_handle_exception(NFS_SERVER(inode
), err
,
3296 } while (exception
.retry
);
3301 * This is just for mknod. open(O_CREAT) will always do ->open_context().
3304 nfs4_proc_create(struct inode
*dir
, struct dentry
*dentry
, struct iattr
*sattr
,
3307 struct nfs4_label l
, *ilabel
= NULL
;
3308 struct nfs_open_context
*ctx
;
3309 struct nfs4_state
*state
;
3312 ctx
= alloc_nfs_open_context(dentry
, FMODE_READ
);
3314 return PTR_ERR(ctx
);
3316 ilabel
= nfs4_label_init_security(dir
, dentry
, sattr
, &l
);
3318 sattr
->ia_mode
&= ~current_umask();
3319 state
= nfs4_do_open(dir
, ctx
, flags
, sattr
, ilabel
);
3320 if (IS_ERR(state
)) {
3321 status
= PTR_ERR(state
);
3325 nfs4_label_release_security(ilabel
);
3326 put_nfs_open_context(ctx
);
3330 static int _nfs4_proc_remove(struct inode
*dir
, struct qstr
*name
)
3332 struct nfs_server
*server
= NFS_SERVER(dir
);
3333 struct nfs_removeargs args
= {
3337 struct nfs_removeres res
= {
3340 struct rpc_message msg
= {
3341 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_REMOVE
],
3347 status
= nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 1);
3349 update_changeattr(dir
, &res
.cinfo
);
3353 static int nfs4_proc_remove(struct inode
*dir
, struct qstr
*name
)
3355 struct nfs4_exception exception
= { };
3358 err
= _nfs4_proc_remove(dir
, name
);
3359 trace_nfs4_remove(dir
, name
, err
);
3360 err
= nfs4_handle_exception(NFS_SERVER(dir
), err
,
3362 } while (exception
.retry
);
3366 static void nfs4_proc_unlink_setup(struct rpc_message
*msg
, struct inode
*dir
)
3368 struct nfs_server
*server
= NFS_SERVER(dir
);
3369 struct nfs_removeargs
*args
= msg
->rpc_argp
;
3370 struct nfs_removeres
*res
= msg
->rpc_resp
;
3372 res
->server
= server
;
3373 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_REMOVE
];
3374 nfs4_init_sequence(&args
->seq_args
, &res
->seq_res
, 1);
3376 nfs_fattr_init(res
->dir_attr
);
3379 static void nfs4_proc_unlink_rpc_prepare(struct rpc_task
*task
, struct nfs_unlinkdata
*data
)
3381 nfs4_setup_sequence(NFS_SERVER(data
->dir
),
3382 &data
->args
.seq_args
,
3387 static int nfs4_proc_unlink_done(struct rpc_task
*task
, struct inode
*dir
)
3389 struct nfs_unlinkdata
*data
= task
->tk_calldata
;
3390 struct nfs_removeres
*res
= &data
->res
;
3392 if (!nfs4_sequence_done(task
, &res
->seq_res
))
3394 if (nfs4_async_handle_error(task
, res
->server
, NULL
) == -EAGAIN
)
3396 update_changeattr(dir
, &res
->cinfo
);
3400 static void nfs4_proc_rename_setup(struct rpc_message
*msg
, struct inode
*dir
)
3402 struct nfs_server
*server
= NFS_SERVER(dir
);
3403 struct nfs_renameargs
*arg
= msg
->rpc_argp
;
3404 struct nfs_renameres
*res
= msg
->rpc_resp
;
3406 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RENAME
];
3407 res
->server
= server
;
3408 nfs4_init_sequence(&arg
->seq_args
, &res
->seq_res
, 1);
3411 static void nfs4_proc_rename_rpc_prepare(struct rpc_task
*task
, struct nfs_renamedata
*data
)
3413 nfs4_setup_sequence(NFS_SERVER(data
->old_dir
),
3414 &data
->args
.seq_args
,
3419 static int nfs4_proc_rename_done(struct rpc_task
*task
, struct inode
*old_dir
,
3420 struct inode
*new_dir
)
3422 struct nfs_renamedata
*data
= task
->tk_calldata
;
3423 struct nfs_renameres
*res
= &data
->res
;
3425 if (!nfs4_sequence_done(task
, &res
->seq_res
))
3427 if (nfs4_async_handle_error(task
, res
->server
, NULL
) == -EAGAIN
)
3430 update_changeattr(old_dir
, &res
->old_cinfo
);
3431 update_changeattr(new_dir
, &res
->new_cinfo
);
3435 static int _nfs4_proc_rename(struct inode
*old_dir
, struct qstr
*old_name
,
3436 struct inode
*new_dir
, struct qstr
*new_name
)
3438 struct nfs_server
*server
= NFS_SERVER(old_dir
);
3439 struct nfs_renameargs arg
= {
3440 .old_dir
= NFS_FH(old_dir
),
3441 .new_dir
= NFS_FH(new_dir
),
3442 .old_name
= old_name
,
3443 .new_name
= new_name
,
3445 struct nfs_renameres res
= {
3448 struct rpc_message msg
= {
3449 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RENAME
],
3453 int status
= -ENOMEM
;
3455 status
= nfs4_call_sync(server
->client
, server
, &msg
, &arg
.seq_args
, &res
.seq_res
, 1);
3457 update_changeattr(old_dir
, &res
.old_cinfo
);
3458 update_changeattr(new_dir
, &res
.new_cinfo
);
3463 static int nfs4_proc_rename(struct inode
*old_dir
, struct qstr
*old_name
,
3464 struct inode
*new_dir
, struct qstr
*new_name
)
3466 struct nfs4_exception exception
= { };
3469 err
= _nfs4_proc_rename(old_dir
, old_name
,
3471 trace_nfs4_rename(old_dir
, old_name
, new_dir
, new_name
, err
);
3472 err
= nfs4_handle_exception(NFS_SERVER(old_dir
), err
,
3474 } while (exception
.retry
);
3478 static int _nfs4_proc_link(struct inode
*inode
, struct inode
*dir
, struct qstr
*name
)
3480 struct nfs_server
*server
= NFS_SERVER(inode
);
3481 struct nfs4_link_arg arg
= {
3482 .fh
= NFS_FH(inode
),
3483 .dir_fh
= NFS_FH(dir
),
3485 .bitmask
= server
->attr_bitmask
,
3487 struct nfs4_link_res res
= {
3491 struct rpc_message msg
= {
3492 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LINK
],
3496 int status
= -ENOMEM
;
3498 res
.fattr
= nfs_alloc_fattr();
3499 if (res
.fattr
== NULL
)
3502 res
.label
= nfs4_label_alloc(server
, GFP_KERNEL
);
3503 if (IS_ERR(res
.label
)) {
3504 status
= PTR_ERR(res
.label
);
3507 arg
.bitmask
= nfs4_bitmask(server
, res
.label
);
3509 status
= nfs4_call_sync(server
->client
, server
, &msg
, &arg
.seq_args
, &res
.seq_res
, 1);
3511 update_changeattr(dir
, &res
.cinfo
);
3512 status
= nfs_post_op_update_inode(inode
, res
.fattr
);
3514 nfs_setsecurity(inode
, res
.fattr
, res
.label
);
3518 nfs4_label_free(res
.label
);
3521 nfs_free_fattr(res
.fattr
);
3525 static int nfs4_proc_link(struct inode
*inode
, struct inode
*dir
, struct qstr
*name
)
3527 struct nfs4_exception exception
= { };
3530 err
= nfs4_handle_exception(NFS_SERVER(inode
),
3531 _nfs4_proc_link(inode
, dir
, name
),
3533 } while (exception
.retry
);
3537 struct nfs4_createdata
{
3538 struct rpc_message msg
;
3539 struct nfs4_create_arg arg
;
3540 struct nfs4_create_res res
;
3542 struct nfs_fattr fattr
;
3543 struct nfs4_label
*label
;
3546 static struct nfs4_createdata
*nfs4_alloc_createdata(struct inode
*dir
,
3547 struct qstr
*name
, struct iattr
*sattr
, u32 ftype
)
3549 struct nfs4_createdata
*data
;
3551 data
= kzalloc(sizeof(*data
), GFP_KERNEL
);
3553 struct nfs_server
*server
= NFS_SERVER(dir
);
3555 data
->label
= nfs4_label_alloc(server
, GFP_KERNEL
);
3556 if (IS_ERR(data
->label
))
3559 data
->msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_CREATE
];
3560 data
->msg
.rpc_argp
= &data
->arg
;
3561 data
->msg
.rpc_resp
= &data
->res
;
3562 data
->arg
.dir_fh
= NFS_FH(dir
);
3563 data
->arg
.server
= server
;
3564 data
->arg
.name
= name
;
3565 data
->arg
.attrs
= sattr
;
3566 data
->arg
.ftype
= ftype
;
3567 data
->arg
.bitmask
= nfs4_bitmask(server
, data
->label
);
3568 data
->res
.server
= server
;
3569 data
->res
.fh
= &data
->fh
;
3570 data
->res
.fattr
= &data
->fattr
;
3571 data
->res
.label
= data
->label
;
3572 nfs_fattr_init(data
->res
.fattr
);
3580 static int nfs4_do_create(struct inode
*dir
, struct dentry
*dentry
, struct nfs4_createdata
*data
)
3582 int status
= nfs4_call_sync(NFS_SERVER(dir
)->client
, NFS_SERVER(dir
), &data
->msg
,
3583 &data
->arg
.seq_args
, &data
->res
.seq_res
, 1);
3585 update_changeattr(dir
, &data
->res
.dir_cinfo
);
3586 status
= nfs_instantiate(dentry
, data
->res
.fh
, data
->res
.fattr
, data
->res
.label
);
3591 static void nfs4_free_createdata(struct nfs4_createdata
*data
)
3593 nfs4_label_free(data
->label
);
3597 static int _nfs4_proc_symlink(struct inode
*dir
, struct dentry
*dentry
,
3598 struct page
*page
, unsigned int len
, struct iattr
*sattr
,
3599 struct nfs4_label
*label
)
3601 struct nfs4_createdata
*data
;
3602 int status
= -ENAMETOOLONG
;
3604 if (len
> NFS4_MAXPATHLEN
)
3608 data
= nfs4_alloc_createdata(dir
, &dentry
->d_name
, sattr
, NF4LNK
);
3612 data
->msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SYMLINK
];
3613 data
->arg
.u
.symlink
.pages
= &page
;
3614 data
->arg
.u
.symlink
.len
= len
;
3615 data
->arg
.label
= label
;
3617 status
= nfs4_do_create(dir
, dentry
, data
);
3619 nfs4_free_createdata(data
);
3624 static int nfs4_proc_symlink(struct inode
*dir
, struct dentry
*dentry
,
3625 struct page
*page
, unsigned int len
, struct iattr
*sattr
)
3627 struct nfs4_exception exception
= { };
3628 struct nfs4_label l
, *label
= NULL
;
3631 label
= nfs4_label_init_security(dir
, dentry
, sattr
, &l
);
3634 err
= _nfs4_proc_symlink(dir
, dentry
, page
, len
, sattr
, label
);
3635 trace_nfs4_symlink(dir
, &dentry
->d_name
, err
);
3636 err
= nfs4_handle_exception(NFS_SERVER(dir
), err
,
3638 } while (exception
.retry
);
3640 nfs4_label_release_security(label
);
3644 static int _nfs4_proc_mkdir(struct inode
*dir
, struct dentry
*dentry
,
3645 struct iattr
*sattr
, struct nfs4_label
*label
)
3647 struct nfs4_createdata
*data
;
3648 int status
= -ENOMEM
;
3650 data
= nfs4_alloc_createdata(dir
, &dentry
->d_name
, sattr
, NF4DIR
);
3654 data
->arg
.label
= label
;
3655 status
= nfs4_do_create(dir
, dentry
, data
);
3657 nfs4_free_createdata(data
);
3662 static int nfs4_proc_mkdir(struct inode
*dir
, struct dentry
*dentry
,
3663 struct iattr
*sattr
)
3665 struct nfs4_exception exception
= { };
3666 struct nfs4_label l
, *label
= NULL
;
3669 label
= nfs4_label_init_security(dir
, dentry
, sattr
, &l
);
3671 sattr
->ia_mode
&= ~current_umask();
3673 err
= _nfs4_proc_mkdir(dir
, dentry
, sattr
, label
);
3674 trace_nfs4_mkdir(dir
, &dentry
->d_name
, err
);
3675 err
= nfs4_handle_exception(NFS_SERVER(dir
), err
,
3677 } while (exception
.retry
);
3678 nfs4_label_release_security(label
);
3683 static int _nfs4_proc_readdir(struct dentry
*dentry
, struct rpc_cred
*cred
,
3684 u64 cookie
, struct page
**pages
, unsigned int count
, int plus
)
3686 struct inode
*dir
= dentry
->d_inode
;
3687 struct nfs4_readdir_arg args
= {
3692 .bitmask
= NFS_SERVER(dentry
->d_inode
)->attr_bitmask
,
3695 struct nfs4_readdir_res res
;
3696 struct rpc_message msg
= {
3697 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_READDIR
],
3704 dprintk("%s: dentry = %s/%s, cookie = %Lu\n", __func__
,
3705 dentry
->d_parent
->d_name
.name
,
3706 dentry
->d_name
.name
,
3707 (unsigned long long)cookie
);
3708 nfs4_setup_readdir(cookie
, NFS_I(dir
)->cookieverf
, dentry
, &args
);
3709 res
.pgbase
= args
.pgbase
;
3710 status
= nfs4_call_sync(NFS_SERVER(dir
)->client
, NFS_SERVER(dir
), &msg
, &args
.seq_args
, &res
.seq_res
, 0);
3712 memcpy(NFS_I(dir
)->cookieverf
, res
.verifier
.data
, NFS4_VERIFIER_SIZE
);
3713 status
+= args
.pgbase
;
3716 nfs_invalidate_atime(dir
);
3718 dprintk("%s: returns %d\n", __func__
, status
);
3722 static int nfs4_proc_readdir(struct dentry
*dentry
, struct rpc_cred
*cred
,
3723 u64 cookie
, struct page
**pages
, unsigned int count
, int plus
)
3725 struct nfs4_exception exception
= { };
3728 err
= _nfs4_proc_readdir(dentry
, cred
, cookie
,
3729 pages
, count
, plus
);
3730 trace_nfs4_readdir(dentry
->d_inode
, err
);
3731 err
= nfs4_handle_exception(NFS_SERVER(dentry
->d_inode
), err
,
3733 } while (exception
.retry
);
3737 static int _nfs4_proc_mknod(struct inode
*dir
, struct dentry
*dentry
,
3738 struct iattr
*sattr
, struct nfs4_label
*label
, dev_t rdev
)
3740 struct nfs4_createdata
*data
;
3741 int mode
= sattr
->ia_mode
;
3742 int status
= -ENOMEM
;
3744 data
= nfs4_alloc_createdata(dir
, &dentry
->d_name
, sattr
, NF4SOCK
);
3749 data
->arg
.ftype
= NF4FIFO
;
3750 else if (S_ISBLK(mode
)) {
3751 data
->arg
.ftype
= NF4BLK
;
3752 data
->arg
.u
.device
.specdata1
= MAJOR(rdev
);
3753 data
->arg
.u
.device
.specdata2
= MINOR(rdev
);
3755 else if (S_ISCHR(mode
)) {
3756 data
->arg
.ftype
= NF4CHR
;
3757 data
->arg
.u
.device
.specdata1
= MAJOR(rdev
);
3758 data
->arg
.u
.device
.specdata2
= MINOR(rdev
);
3759 } else if (!S_ISSOCK(mode
)) {
3764 data
->arg
.label
= label
;
3765 status
= nfs4_do_create(dir
, dentry
, data
);
3767 nfs4_free_createdata(data
);
3772 static int nfs4_proc_mknod(struct inode
*dir
, struct dentry
*dentry
,
3773 struct iattr
*sattr
, dev_t rdev
)
3775 struct nfs4_exception exception
= { };
3776 struct nfs4_label l
, *label
= NULL
;
3779 label
= nfs4_label_init_security(dir
, dentry
, sattr
, &l
);
3781 sattr
->ia_mode
&= ~current_umask();
3783 err
= _nfs4_proc_mknod(dir
, dentry
, sattr
, label
, rdev
);
3784 trace_nfs4_mknod(dir
, &dentry
->d_name
, err
);
3785 err
= nfs4_handle_exception(NFS_SERVER(dir
), err
,
3787 } while (exception
.retry
);
3789 nfs4_label_release_security(label
);
3794 static int _nfs4_proc_statfs(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
3795 struct nfs_fsstat
*fsstat
)
3797 struct nfs4_statfs_arg args
= {
3799 .bitmask
= server
->attr_bitmask
,
3801 struct nfs4_statfs_res res
= {
3804 struct rpc_message msg
= {
3805 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_STATFS
],
3810 nfs_fattr_init(fsstat
->fattr
);
3811 return nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
3814 static int nfs4_proc_statfs(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fsstat
*fsstat
)
3816 struct nfs4_exception exception
= { };
3819 err
= nfs4_handle_exception(server
,
3820 _nfs4_proc_statfs(server
, fhandle
, fsstat
),
3822 } while (exception
.retry
);
3826 static int _nfs4_do_fsinfo(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
3827 struct nfs_fsinfo
*fsinfo
)
3829 struct nfs4_fsinfo_arg args
= {
3831 .bitmask
= server
->attr_bitmask
,
3833 struct nfs4_fsinfo_res res
= {
3836 struct rpc_message msg
= {
3837 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_FSINFO
],
3842 return nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
3845 static int nfs4_do_fsinfo(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fsinfo
*fsinfo
)
3847 struct nfs4_exception exception
= { };
3848 unsigned long now
= jiffies
;
3852 err
= _nfs4_do_fsinfo(server
, fhandle
, fsinfo
);
3853 trace_nfs4_fsinfo(server
, fhandle
, fsinfo
->fattr
, err
);
3855 struct nfs_client
*clp
= server
->nfs_client
;
3857 spin_lock(&clp
->cl_lock
);
3858 clp
->cl_lease_time
= fsinfo
->lease_time
* HZ
;
3859 clp
->cl_last_renewal
= now
;
3860 spin_unlock(&clp
->cl_lock
);
3863 err
= nfs4_handle_exception(server
, err
, &exception
);
3864 } while (exception
.retry
);
3868 static int nfs4_proc_fsinfo(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fsinfo
*fsinfo
)
3872 nfs_fattr_init(fsinfo
->fattr
);
3873 error
= nfs4_do_fsinfo(server
, fhandle
, fsinfo
);
3875 /* block layout checks this! */
3876 server
->pnfs_blksize
= fsinfo
->blksize
;
3877 set_pnfs_layoutdriver(server
, fhandle
, fsinfo
->layouttype
);
3883 static int _nfs4_proc_pathconf(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
3884 struct nfs_pathconf
*pathconf
)
3886 struct nfs4_pathconf_arg args
= {
3888 .bitmask
= server
->attr_bitmask
,
3890 struct nfs4_pathconf_res res
= {
3891 .pathconf
= pathconf
,
3893 struct rpc_message msg
= {
3894 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_PATHCONF
],
3899 /* None of the pathconf attributes are mandatory to implement */
3900 if ((args
.bitmask
[0] & nfs4_pathconf_bitmap
[0]) == 0) {
3901 memset(pathconf
, 0, sizeof(*pathconf
));
3905 nfs_fattr_init(pathconf
->fattr
);
3906 return nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
3909 static int nfs4_proc_pathconf(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
3910 struct nfs_pathconf
*pathconf
)
3912 struct nfs4_exception exception
= { };
3916 err
= nfs4_handle_exception(server
,
3917 _nfs4_proc_pathconf(server
, fhandle
, pathconf
),
3919 } while (exception
.retry
);
3923 int nfs4_set_rw_stateid(nfs4_stateid
*stateid
,
3924 const struct nfs_open_context
*ctx
,
3925 const struct nfs_lock_context
*l_ctx
,
3928 const struct nfs_lockowner
*lockowner
= NULL
;
3931 lockowner
= &l_ctx
->lockowner
;
3932 return nfs4_select_rw_stateid(stateid
, ctx
->state
, fmode
, lockowner
);
3934 EXPORT_SYMBOL_GPL(nfs4_set_rw_stateid
);
3936 static bool nfs4_stateid_is_current(nfs4_stateid
*stateid
,
3937 const struct nfs_open_context
*ctx
,
3938 const struct nfs_lock_context
*l_ctx
,
3941 nfs4_stateid current_stateid
;
3943 if (nfs4_set_rw_stateid(¤t_stateid
, ctx
, l_ctx
, fmode
))
3945 return nfs4_stateid_match(stateid
, ¤t_stateid
);
3948 static bool nfs4_error_stateid_expired(int err
)
3951 case -NFS4ERR_DELEG_REVOKED
:
3952 case -NFS4ERR_ADMIN_REVOKED
:
3953 case -NFS4ERR_BAD_STATEID
:
3954 case -NFS4ERR_STALE_STATEID
:
3955 case -NFS4ERR_OLD_STATEID
:
3956 case -NFS4ERR_OPENMODE
:
3957 case -NFS4ERR_EXPIRED
:
3963 void __nfs4_read_done_cb(struct nfs_read_data
*data
)
3965 nfs_invalidate_atime(data
->header
->inode
);
3968 static int nfs4_read_done_cb(struct rpc_task
*task
, struct nfs_read_data
*data
)
3970 struct nfs_server
*server
= NFS_SERVER(data
->header
->inode
);
3972 trace_nfs4_read(data
, task
->tk_status
);
3973 if (nfs4_async_handle_error(task
, server
, data
->args
.context
->state
) == -EAGAIN
) {
3974 rpc_restart_call_prepare(task
);
3978 __nfs4_read_done_cb(data
);
3979 if (task
->tk_status
> 0)
3980 renew_lease(server
, data
->timestamp
);
3984 static bool nfs4_read_stateid_changed(struct rpc_task
*task
,
3985 struct nfs_readargs
*args
)
3988 if (!nfs4_error_stateid_expired(task
->tk_status
) ||
3989 nfs4_stateid_is_current(&args
->stateid
,
3994 rpc_restart_call_prepare(task
);
3998 static int nfs4_read_done(struct rpc_task
*task
, struct nfs_read_data
*data
)
4001 dprintk("--> %s\n", __func__
);
4003 if (!nfs4_sequence_done(task
, &data
->res
.seq_res
))
4005 if (nfs4_read_stateid_changed(task
, &data
->args
))
4007 return data
->read_done_cb
? data
->read_done_cb(task
, data
) :
4008 nfs4_read_done_cb(task
, data
);
4011 static void nfs4_proc_read_setup(struct nfs_read_data
*data
, struct rpc_message
*msg
)
4013 data
->timestamp
= jiffies
;
4014 data
->read_done_cb
= nfs4_read_done_cb
;
4015 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_READ
];
4016 nfs4_init_sequence(&data
->args
.seq_args
, &data
->res
.seq_res
, 0);
4019 static void nfs4_proc_read_rpc_prepare(struct rpc_task
*task
, struct nfs_read_data
*data
)
4021 if (nfs4_setup_sequence(NFS_SERVER(data
->header
->inode
),
4022 &data
->args
.seq_args
,
4026 nfs4_set_rw_stateid(&data
->args
.stateid
, data
->args
.context
,
4027 data
->args
.lock_context
, FMODE_READ
);
4030 static int nfs4_write_done_cb(struct rpc_task
*task
, struct nfs_write_data
*data
)
4032 struct inode
*inode
= data
->header
->inode
;
4034 trace_nfs4_write(data
, task
->tk_status
);
4035 if (nfs4_async_handle_error(task
, NFS_SERVER(inode
), data
->args
.context
->state
) == -EAGAIN
) {
4036 rpc_restart_call_prepare(task
);
4039 if (task
->tk_status
>= 0) {
4040 renew_lease(NFS_SERVER(inode
), data
->timestamp
);
4041 nfs_post_op_update_inode_force_wcc(inode
, &data
->fattr
);
4046 static bool nfs4_write_stateid_changed(struct rpc_task
*task
,
4047 struct nfs_writeargs
*args
)
4050 if (!nfs4_error_stateid_expired(task
->tk_status
) ||
4051 nfs4_stateid_is_current(&args
->stateid
,
4056 rpc_restart_call_prepare(task
);
4060 static int nfs4_write_done(struct rpc_task
*task
, struct nfs_write_data
*data
)
4062 if (!nfs4_sequence_done(task
, &data
->res
.seq_res
))
4064 if (nfs4_write_stateid_changed(task
, &data
->args
))
4066 return data
->write_done_cb
? data
->write_done_cb(task
, data
) :
4067 nfs4_write_done_cb(task
, data
);
4071 bool nfs4_write_need_cache_consistency_data(const struct nfs_write_data
*data
)
4073 const struct nfs_pgio_header
*hdr
= data
->header
;
4075 /* Don't request attributes for pNFS or O_DIRECT writes */
4076 if (data
->ds_clp
!= NULL
|| hdr
->dreq
!= NULL
)
4078 /* Otherwise, request attributes if and only if we don't hold
4081 return nfs4_have_delegation(hdr
->inode
, FMODE_READ
) == 0;
4084 static void nfs4_proc_write_setup(struct nfs_write_data
*data
, struct rpc_message
*msg
)
4086 struct nfs_server
*server
= NFS_SERVER(data
->header
->inode
);
4088 if (!nfs4_write_need_cache_consistency_data(data
)) {
4089 data
->args
.bitmask
= NULL
;
4090 data
->res
.fattr
= NULL
;
4092 data
->args
.bitmask
= server
->cache_consistency_bitmask
;
4094 if (!data
->write_done_cb
)
4095 data
->write_done_cb
= nfs4_write_done_cb
;
4096 data
->res
.server
= server
;
4097 data
->timestamp
= jiffies
;
4099 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_WRITE
];
4100 nfs4_init_sequence(&data
->args
.seq_args
, &data
->res
.seq_res
, 1);
4103 static void nfs4_proc_write_rpc_prepare(struct rpc_task
*task
, struct nfs_write_data
*data
)
4105 if (nfs4_setup_sequence(NFS_SERVER(data
->header
->inode
),
4106 &data
->args
.seq_args
,
4110 nfs4_set_rw_stateid(&data
->args
.stateid
, data
->args
.context
,
4111 data
->args
.lock_context
, FMODE_WRITE
);
4114 static void nfs4_proc_commit_rpc_prepare(struct rpc_task
*task
, struct nfs_commit_data
*data
)
4116 nfs4_setup_sequence(NFS_SERVER(data
->inode
),
4117 &data
->args
.seq_args
,
4122 static int nfs4_commit_done_cb(struct rpc_task
*task
, struct nfs_commit_data
*data
)
4124 struct inode
*inode
= data
->inode
;
4126 trace_nfs4_commit(data
, task
->tk_status
);
4127 if (nfs4_async_handle_error(task
, NFS_SERVER(inode
), NULL
) == -EAGAIN
) {
4128 rpc_restart_call_prepare(task
);
4134 static int nfs4_commit_done(struct rpc_task
*task
, struct nfs_commit_data
*data
)
4136 if (!nfs4_sequence_done(task
, &data
->res
.seq_res
))
4138 return data
->commit_done_cb(task
, data
);
4141 static void nfs4_proc_commit_setup(struct nfs_commit_data
*data
, struct rpc_message
*msg
)
4143 struct nfs_server
*server
= NFS_SERVER(data
->inode
);
4145 if (data
->commit_done_cb
== NULL
)
4146 data
->commit_done_cb
= nfs4_commit_done_cb
;
4147 data
->res
.server
= server
;
4148 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_COMMIT
];
4149 nfs4_init_sequence(&data
->args
.seq_args
, &data
->res
.seq_res
, 1);
4152 struct nfs4_renewdata
{
4153 struct nfs_client
*client
;
4154 unsigned long timestamp
;
4158 * nfs4_proc_async_renew(): This is not one of the nfs_rpc_ops; it is a special
4159 * standalone procedure for queueing an asynchronous RENEW.
4161 static void nfs4_renew_release(void *calldata
)
4163 struct nfs4_renewdata
*data
= calldata
;
4164 struct nfs_client
*clp
= data
->client
;
4166 if (atomic_read(&clp
->cl_count
) > 1)
4167 nfs4_schedule_state_renewal(clp
);
4168 nfs_put_client(clp
);
4172 static void nfs4_renew_done(struct rpc_task
*task
, void *calldata
)
4174 struct nfs4_renewdata
*data
= calldata
;
4175 struct nfs_client
*clp
= data
->client
;
4176 unsigned long timestamp
= data
->timestamp
;
4178 trace_nfs4_renew_async(clp
, task
->tk_status
);
4179 if (task
->tk_status
< 0) {
4180 /* Unless we're shutting down, schedule state recovery! */
4181 if (test_bit(NFS_CS_RENEWD
, &clp
->cl_res_state
) == 0)
4183 if (task
->tk_status
!= NFS4ERR_CB_PATH_DOWN
) {
4184 nfs4_schedule_lease_recovery(clp
);
4187 nfs4_schedule_path_down_recovery(clp
);
4189 do_renew_lease(clp
, timestamp
);
4192 static const struct rpc_call_ops nfs4_renew_ops
= {
4193 .rpc_call_done
= nfs4_renew_done
,
4194 .rpc_release
= nfs4_renew_release
,
4197 static int nfs4_proc_async_renew(struct nfs_client
*clp
, struct rpc_cred
*cred
, unsigned renew_flags
)
4199 struct rpc_message msg
= {
4200 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RENEW
],
4204 struct nfs4_renewdata
*data
;
4206 if (renew_flags
== 0)
4208 if (!atomic_inc_not_zero(&clp
->cl_count
))
4210 data
= kmalloc(sizeof(*data
), GFP_NOFS
);
4214 data
->timestamp
= jiffies
;
4215 return rpc_call_async(clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
,
4216 &nfs4_renew_ops
, data
);
4219 static int nfs4_proc_renew(struct nfs_client
*clp
, struct rpc_cred
*cred
)
4221 struct rpc_message msg
= {
4222 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RENEW
],
4226 unsigned long now
= jiffies
;
4229 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
4232 do_renew_lease(clp
, now
);
4236 static inline int nfs4_server_supports_acls(struct nfs_server
*server
)
4238 return (server
->caps
& NFS_CAP_ACLS
)
4239 && (server
->acl_bitmask
& ACL4_SUPPORT_ALLOW_ACL
)
4240 && (server
->acl_bitmask
& ACL4_SUPPORT_DENY_ACL
);
4243 /* Assuming that XATTR_SIZE_MAX is a multiple of PAGE_SIZE, and that
4244 * it's OK to put sizeof(void) * (XATTR_SIZE_MAX/PAGE_SIZE) bytes on
4247 #define NFS4ACL_MAXPAGES DIV_ROUND_UP(XATTR_SIZE_MAX, PAGE_SIZE)
4249 static int buf_to_pages_noslab(const void *buf
, size_t buflen
,
4250 struct page
**pages
, unsigned int *pgbase
)
4252 struct page
*newpage
, **spages
;
4258 len
= min_t(size_t, PAGE_SIZE
, buflen
);
4259 newpage
= alloc_page(GFP_KERNEL
);
4261 if (newpage
== NULL
)
4263 memcpy(page_address(newpage
), buf
, len
);
4268 } while (buflen
!= 0);
4274 __free_page(spages
[rc
-1]);
4278 struct nfs4_cached_acl
{
4284 static void nfs4_set_cached_acl(struct inode
*inode
, struct nfs4_cached_acl
*acl
)
4286 struct nfs_inode
*nfsi
= NFS_I(inode
);
4288 spin_lock(&inode
->i_lock
);
4289 kfree(nfsi
->nfs4_acl
);
4290 nfsi
->nfs4_acl
= acl
;
4291 spin_unlock(&inode
->i_lock
);
4294 static void nfs4_zap_acl_attr(struct inode
*inode
)
4296 nfs4_set_cached_acl(inode
, NULL
);
4299 static inline ssize_t
nfs4_read_cached_acl(struct inode
*inode
, char *buf
, size_t buflen
)
4301 struct nfs_inode
*nfsi
= NFS_I(inode
);
4302 struct nfs4_cached_acl
*acl
;
4305 spin_lock(&inode
->i_lock
);
4306 acl
= nfsi
->nfs4_acl
;
4309 if (buf
== NULL
) /* user is just asking for length */
4311 if (acl
->cached
== 0)
4313 ret
= -ERANGE
; /* see getxattr(2) man page */
4314 if (acl
->len
> buflen
)
4316 memcpy(buf
, acl
->data
, acl
->len
);
4320 spin_unlock(&inode
->i_lock
);
4324 static void nfs4_write_cached_acl(struct inode
*inode
, struct page
**pages
, size_t pgbase
, size_t acl_len
)
4326 struct nfs4_cached_acl
*acl
;
4327 size_t buflen
= sizeof(*acl
) + acl_len
;
4329 if (buflen
<= PAGE_SIZE
) {
4330 acl
= kmalloc(buflen
, GFP_KERNEL
);
4334 _copy_from_pages(acl
->data
, pages
, pgbase
, acl_len
);
4336 acl
= kmalloc(sizeof(*acl
), GFP_KERNEL
);
4343 nfs4_set_cached_acl(inode
, acl
);
4347 * The getxattr API returns the required buffer length when called with a
4348 * NULL buf. The NFSv4 acl tool then calls getxattr again after allocating
4349 * the required buf. On a NULL buf, we send a page of data to the server
4350 * guessing that the ACL request can be serviced by a page. If so, we cache
4351 * up to the page of ACL data, and the 2nd call to getxattr is serviced by
4352 * the cache. If not so, we throw away the page, and cache the required
4353 * length. The next getxattr call will then produce another round trip to
4354 * the server, this time with the input buf of the required size.
4356 static ssize_t
__nfs4_get_acl_uncached(struct inode
*inode
, void *buf
, size_t buflen
)
4358 struct page
*pages
[NFS4ACL_MAXPAGES
] = {NULL
, };
4359 struct nfs_getaclargs args
= {
4360 .fh
= NFS_FH(inode
),
4364 struct nfs_getaclres res
= {
4367 struct rpc_message msg
= {
4368 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GETACL
],
4372 unsigned int npages
= DIV_ROUND_UP(buflen
, PAGE_SIZE
);
4373 int ret
= -ENOMEM
, i
;
4375 /* As long as we're doing a round trip to the server anyway,
4376 * let's be prepared for a page of acl data. */
4379 if (npages
> ARRAY_SIZE(pages
))
4382 for (i
= 0; i
< npages
; i
++) {
4383 pages
[i
] = alloc_page(GFP_KERNEL
);
4388 /* for decoding across pages */
4389 res
.acl_scratch
= alloc_page(GFP_KERNEL
);
4390 if (!res
.acl_scratch
)
4393 args
.acl_len
= npages
* PAGE_SIZE
;
4394 args
.acl_pgbase
= 0;
4396 dprintk("%s buf %p buflen %zu npages %d args.acl_len %zu\n",
4397 __func__
, buf
, buflen
, npages
, args
.acl_len
);
4398 ret
= nfs4_call_sync(NFS_SERVER(inode
)->client
, NFS_SERVER(inode
),
4399 &msg
, &args
.seq_args
, &res
.seq_res
, 0);
4403 /* Handle the case where the passed-in buffer is too short */
4404 if (res
.acl_flags
& NFS4_ACL_TRUNC
) {
4405 /* Did the user only issue a request for the acl length? */
4411 nfs4_write_cached_acl(inode
, pages
, res
.acl_data_offset
, res
.acl_len
);
4413 if (res
.acl_len
> buflen
) {
4417 _copy_from_pages(buf
, pages
, res
.acl_data_offset
, res
.acl_len
);
4422 for (i
= 0; i
< npages
; i
++)
4424 __free_page(pages
[i
]);
4425 if (res
.acl_scratch
)
4426 __free_page(res
.acl_scratch
);
4430 static ssize_t
nfs4_get_acl_uncached(struct inode
*inode
, void *buf
, size_t buflen
)
4432 struct nfs4_exception exception
= { };
4435 ret
= __nfs4_get_acl_uncached(inode
, buf
, buflen
);
4436 trace_nfs4_get_acl(inode
, ret
);
4439 ret
= nfs4_handle_exception(NFS_SERVER(inode
), ret
, &exception
);
4440 } while (exception
.retry
);
4444 static ssize_t
nfs4_proc_get_acl(struct inode
*inode
, void *buf
, size_t buflen
)
4446 struct nfs_server
*server
= NFS_SERVER(inode
);
4449 if (!nfs4_server_supports_acls(server
))
4451 ret
= nfs_revalidate_inode(server
, inode
);
4454 if (NFS_I(inode
)->cache_validity
& NFS_INO_INVALID_ACL
)
4455 nfs_zap_acl_cache(inode
);
4456 ret
= nfs4_read_cached_acl(inode
, buf
, buflen
);
4458 /* -ENOENT is returned if there is no ACL or if there is an ACL
4459 * but no cached acl data, just the acl length */
4461 return nfs4_get_acl_uncached(inode
, buf
, buflen
);
4464 static int __nfs4_proc_set_acl(struct inode
*inode
, const void *buf
, size_t buflen
)
4466 struct nfs_server
*server
= NFS_SERVER(inode
);
4467 struct page
*pages
[NFS4ACL_MAXPAGES
];
4468 struct nfs_setaclargs arg
= {
4469 .fh
= NFS_FH(inode
),
4473 struct nfs_setaclres res
;
4474 struct rpc_message msg
= {
4475 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETACL
],
4479 unsigned int npages
= DIV_ROUND_UP(buflen
, PAGE_SIZE
);
4482 if (!nfs4_server_supports_acls(server
))
4484 if (npages
> ARRAY_SIZE(pages
))
4486 i
= buf_to_pages_noslab(buf
, buflen
, arg
.acl_pages
, &arg
.acl_pgbase
);
4489 nfs4_inode_return_delegation(inode
);
4490 ret
= nfs4_call_sync(server
->client
, server
, &msg
, &arg
.seq_args
, &res
.seq_res
, 1);
4493 * Free each page after tx, so the only ref left is
4494 * held by the network stack
4497 put_page(pages
[i
-1]);
4500 * Acl update can result in inode attribute update.
4501 * so mark the attribute cache invalid.
4503 spin_lock(&inode
->i_lock
);
4504 NFS_I(inode
)->cache_validity
|= NFS_INO_INVALID_ATTR
;
4505 spin_unlock(&inode
->i_lock
);
4506 nfs_access_zap_cache(inode
);
4507 nfs_zap_acl_cache(inode
);
4511 static int nfs4_proc_set_acl(struct inode
*inode
, const void *buf
, size_t buflen
)
4513 struct nfs4_exception exception
= { };
4516 err
= __nfs4_proc_set_acl(inode
, buf
, buflen
);
4517 trace_nfs4_set_acl(inode
, err
);
4518 err
= nfs4_handle_exception(NFS_SERVER(inode
), err
,
4520 } while (exception
.retry
);
4524 #ifdef CONFIG_NFS_V4_SECURITY_LABEL
4525 static int _nfs4_get_security_label(struct inode
*inode
, void *buf
,
4528 struct nfs_server
*server
= NFS_SERVER(inode
);
4529 struct nfs_fattr fattr
;
4530 struct nfs4_label label
= {0, 0, buflen
, buf
};
4532 u32 bitmask
[3] = { 0, 0, FATTR4_WORD2_SECURITY_LABEL
};
4533 struct nfs4_getattr_arg args
= {
4534 .fh
= NFS_FH(inode
),
4537 struct nfs4_getattr_res res
= {
4542 struct rpc_message msg
= {
4543 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GETATTR
],
4549 nfs_fattr_init(&fattr
);
4551 ret
= rpc_call_sync(server
->client
, &msg
, 0);
4554 if (!(fattr
.valid
& NFS_ATTR_FATTR_V4_SECURITY_LABEL
))
4556 if (buflen
< label
.len
)
4561 static int nfs4_get_security_label(struct inode
*inode
, void *buf
,
4564 struct nfs4_exception exception
= { };
4567 if (!nfs_server_capable(inode
, NFS_CAP_SECURITY_LABEL
))
4571 err
= _nfs4_get_security_label(inode
, buf
, buflen
);
4572 trace_nfs4_get_security_label(inode
, err
);
4573 err
= nfs4_handle_exception(NFS_SERVER(inode
), err
,
4575 } while (exception
.retry
);
4579 static int _nfs4_do_set_security_label(struct inode
*inode
,
4580 struct nfs4_label
*ilabel
,
4581 struct nfs_fattr
*fattr
,
4582 struct nfs4_label
*olabel
)
4585 struct iattr sattr
= {0};
4586 struct nfs_server
*server
= NFS_SERVER(inode
);
4587 const u32 bitmask
[3] = { 0, 0, FATTR4_WORD2_SECURITY_LABEL
};
4588 struct nfs_setattrargs args
= {
4589 .fh
= NFS_FH(inode
),
4595 struct nfs_setattrres res
= {
4600 struct rpc_message msg
= {
4601 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETATTR
],
4607 nfs4_stateid_copy(&args
.stateid
, &zero_stateid
);
4609 status
= rpc_call_sync(server
->client
, &msg
, 0);
4611 dprintk("%s failed: %d\n", __func__
, status
);
4616 static int nfs4_do_set_security_label(struct inode
*inode
,
4617 struct nfs4_label
*ilabel
,
4618 struct nfs_fattr
*fattr
,
4619 struct nfs4_label
*olabel
)
4621 struct nfs4_exception exception
= { };
4625 err
= _nfs4_do_set_security_label(inode
, ilabel
,
4627 trace_nfs4_set_security_label(inode
, err
);
4628 err
= nfs4_handle_exception(NFS_SERVER(inode
), err
,
4630 } while (exception
.retry
);
4635 nfs4_set_security_label(struct dentry
*dentry
, const void *buf
, size_t buflen
)
4637 struct nfs4_label ilabel
, *olabel
= NULL
;
4638 struct nfs_fattr fattr
;
4639 struct rpc_cred
*cred
;
4640 struct inode
*inode
= dentry
->d_inode
;
4643 if (!nfs_server_capable(inode
, NFS_CAP_SECURITY_LABEL
))
4646 nfs_fattr_init(&fattr
);
4650 ilabel
.label
= (char *)buf
;
4651 ilabel
.len
= buflen
;
4653 cred
= rpc_lookup_cred();
4655 return PTR_ERR(cred
);
4657 olabel
= nfs4_label_alloc(NFS_SERVER(inode
), GFP_KERNEL
);
4658 if (IS_ERR(olabel
)) {
4659 status
= -PTR_ERR(olabel
);
4663 status
= nfs4_do_set_security_label(inode
, &ilabel
, &fattr
, olabel
);
4665 nfs_setsecurity(inode
, &fattr
, olabel
);
4667 nfs4_label_free(olabel
);
4672 #endif /* CONFIG_NFS_V4_SECURITY_LABEL */
4676 nfs4_async_handle_error(struct rpc_task
*task
, const struct nfs_server
*server
, struct nfs4_state
*state
)
4678 struct nfs_client
*clp
= server
->nfs_client
;
4680 if (task
->tk_status
>= 0)
4682 switch(task
->tk_status
) {
4683 case -NFS4ERR_DELEG_REVOKED
:
4684 case -NFS4ERR_ADMIN_REVOKED
:
4685 case -NFS4ERR_BAD_STATEID
:
4688 nfs_remove_bad_delegation(state
->inode
);
4689 case -NFS4ERR_OPENMODE
:
4692 if (nfs4_schedule_stateid_recovery(server
, state
) < 0)
4693 goto stateid_invalid
;
4694 goto wait_on_recovery
;
4695 case -NFS4ERR_EXPIRED
:
4696 if (state
!= NULL
) {
4697 if (nfs4_schedule_stateid_recovery(server
, state
) < 0)
4698 goto stateid_invalid
;
4700 case -NFS4ERR_STALE_STATEID
:
4701 case -NFS4ERR_STALE_CLIENTID
:
4702 nfs4_schedule_lease_recovery(clp
);
4703 goto wait_on_recovery
;
4704 #if defined(CONFIG_NFS_V4_1)
4705 case -NFS4ERR_BADSESSION
:
4706 case -NFS4ERR_BADSLOT
:
4707 case -NFS4ERR_BAD_HIGH_SLOT
:
4708 case -NFS4ERR_DEADSESSION
:
4709 case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION
:
4710 case -NFS4ERR_SEQ_FALSE_RETRY
:
4711 case -NFS4ERR_SEQ_MISORDERED
:
4712 dprintk("%s ERROR %d, Reset session\n", __func__
,
4714 nfs4_schedule_session_recovery(clp
->cl_session
, task
->tk_status
);
4715 task
->tk_status
= 0;
4717 #endif /* CONFIG_NFS_V4_1 */
4718 case -NFS4ERR_DELAY
:
4719 nfs_inc_server_stats(server
, NFSIOS_DELAY
);
4720 case -NFS4ERR_GRACE
:
4721 rpc_delay(task
, NFS4_POLL_RETRY_MAX
);
4722 task
->tk_status
= 0;
4724 case -NFS4ERR_RETRY_UNCACHED_REP
:
4725 case -NFS4ERR_OLD_STATEID
:
4726 task
->tk_status
= 0;
4729 task
->tk_status
= nfs4_map_errors(task
->tk_status
);
4732 task
->tk_status
= -EIO
;
4735 rpc_sleep_on(&clp
->cl_rpcwaitq
, task
, NULL
);
4736 if (test_bit(NFS4CLNT_MANAGER_RUNNING
, &clp
->cl_state
) == 0)
4737 rpc_wake_up_queued_task(&clp
->cl_rpcwaitq
, task
);
4738 task
->tk_status
= 0;
4742 static void nfs4_init_boot_verifier(const struct nfs_client
*clp
,
4743 nfs4_verifier
*bootverf
)
4747 if (test_bit(NFS4CLNT_PURGE_STATE
, &clp
->cl_state
)) {
4748 /* An impossible timestamp guarantees this value
4749 * will never match a generated boot time. */
4751 verf
[1] = cpu_to_be32(NSEC_PER_SEC
+ 1);
4753 struct nfs_net
*nn
= net_generic(clp
->cl_net
, nfs_net_id
);
4754 verf
[0] = cpu_to_be32(nn
->boot_time
.tv_sec
);
4755 verf
[1] = cpu_to_be32(nn
->boot_time
.tv_nsec
);
4757 memcpy(bootverf
->data
, verf
, sizeof(bootverf
->data
));
4761 nfs4_init_nonuniform_client_string(const struct nfs_client
*clp
,
4762 char *buf
, size_t len
)
4764 unsigned int result
;
4767 result
= scnprintf(buf
, len
, "Linux NFSv4.0 %s/%s %s",
4769 rpc_peeraddr2str(clp
->cl_rpcclient
,
4771 rpc_peeraddr2str(clp
->cl_rpcclient
,
4772 RPC_DISPLAY_PROTO
));
4778 nfs4_init_uniform_client_string(const struct nfs_client
*clp
,
4779 char *buf
, size_t len
)
4781 const char *nodename
= clp
->cl_rpcclient
->cl_nodename
;
4783 if (nfs4_client_id_uniquifier
[0] != '\0')
4784 return scnprintf(buf
, len
, "Linux NFSv%u.%u %s/%s",
4785 clp
->rpc_ops
->version
,
4786 clp
->cl_minorversion
,
4787 nfs4_client_id_uniquifier
,
4789 return scnprintf(buf
, len
, "Linux NFSv%u.%u %s",
4790 clp
->rpc_ops
->version
, clp
->cl_minorversion
,
4795 * nfs4_proc_setclientid - Negotiate client ID
4796 * @clp: state data structure
4797 * @program: RPC program for NFSv4 callback service
4798 * @port: IP port number for NFS4 callback service
4799 * @cred: RPC credential to use for this call
4800 * @res: where to place the result
4802 * Returns zero, a negative errno, or a negative NFS4ERR status code.
4804 int nfs4_proc_setclientid(struct nfs_client
*clp
, u32 program
,
4805 unsigned short port
, struct rpc_cred
*cred
,
4806 struct nfs4_setclientid_res
*res
)
4808 nfs4_verifier sc_verifier
;
4809 struct nfs4_setclientid setclientid
= {
4810 .sc_verifier
= &sc_verifier
,
4812 .sc_cb_ident
= clp
->cl_cb_ident
,
4814 struct rpc_message msg
= {
4815 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETCLIENTID
],
4816 .rpc_argp
= &setclientid
,
4822 /* nfs_client_id4 */
4823 nfs4_init_boot_verifier(clp
, &sc_verifier
);
4824 if (test_bit(NFS_CS_MIGRATION
, &clp
->cl_flags
))
4825 setclientid
.sc_name_len
=
4826 nfs4_init_uniform_client_string(clp
,
4827 setclientid
.sc_name
,
4828 sizeof(setclientid
.sc_name
));
4830 setclientid
.sc_name_len
=
4831 nfs4_init_nonuniform_client_string(clp
,
4832 setclientid
.sc_name
,
4833 sizeof(setclientid
.sc_name
));
4836 setclientid
.sc_netid_len
= scnprintf(setclientid
.sc_netid
,
4837 sizeof(setclientid
.sc_netid
), "%s",
4838 rpc_peeraddr2str(clp
->cl_rpcclient
,
4839 RPC_DISPLAY_NETID
));
4841 setclientid
.sc_uaddr_len
= scnprintf(setclientid
.sc_uaddr
,
4842 sizeof(setclientid
.sc_uaddr
), "%s.%u.%u",
4843 clp
->cl_ipaddr
, port
>> 8, port
& 255);
4845 dprintk("NFS call setclientid auth=%s, '%.*s'\n",
4846 clp
->cl_rpcclient
->cl_auth
->au_ops
->au_name
,
4847 setclientid
.sc_name_len
, setclientid
.sc_name
);
4848 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
4849 trace_nfs4_setclientid(clp
, status
);
4850 dprintk("NFS reply setclientid: %d\n", status
);
4855 * nfs4_proc_setclientid_confirm - Confirm client ID
4856 * @clp: state data structure
4857 * @res: result of a previous SETCLIENTID
4858 * @cred: RPC credential to use for this call
4860 * Returns zero, a negative errno, or a negative NFS4ERR status code.
4862 int nfs4_proc_setclientid_confirm(struct nfs_client
*clp
,
4863 struct nfs4_setclientid_res
*arg
,
4864 struct rpc_cred
*cred
)
4866 struct rpc_message msg
= {
4867 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETCLIENTID_CONFIRM
],
4873 dprintk("NFS call setclientid_confirm auth=%s, (client ID %llx)\n",
4874 clp
->cl_rpcclient
->cl_auth
->au_ops
->au_name
,
4876 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
4877 trace_nfs4_setclientid_confirm(clp
, status
);
4878 dprintk("NFS reply setclientid_confirm: %d\n", status
);
4882 struct nfs4_delegreturndata
{
4883 struct nfs4_delegreturnargs args
;
4884 struct nfs4_delegreturnres res
;
4886 nfs4_stateid stateid
;
4887 unsigned long timestamp
;
4888 struct nfs_fattr fattr
;
4892 static void nfs4_delegreturn_done(struct rpc_task
*task
, void *calldata
)
4894 struct nfs4_delegreturndata
*data
= calldata
;
4896 if (!nfs4_sequence_done(task
, &data
->res
.seq_res
))
4899 trace_nfs4_delegreturn_exit(&data
->args
, &data
->res
, task
->tk_status
);
4900 switch (task
->tk_status
) {
4901 case -NFS4ERR_STALE_STATEID
:
4902 case -NFS4ERR_EXPIRED
:
4904 renew_lease(data
->res
.server
, data
->timestamp
);
4907 if (nfs4_async_handle_error(task
, data
->res
.server
, NULL
) ==
4909 rpc_restart_call_prepare(task
);
4913 data
->rpc_status
= task
->tk_status
;
4916 static void nfs4_delegreturn_release(void *calldata
)
4921 #if defined(CONFIG_NFS_V4_1)
4922 static void nfs4_delegreturn_prepare(struct rpc_task
*task
, void *data
)
4924 struct nfs4_delegreturndata
*d_data
;
4926 d_data
= (struct nfs4_delegreturndata
*)data
;
4928 nfs4_setup_sequence(d_data
->res
.server
,
4929 &d_data
->args
.seq_args
,
4930 &d_data
->res
.seq_res
,
4933 #endif /* CONFIG_NFS_V4_1 */
4935 static const struct rpc_call_ops nfs4_delegreturn_ops
= {
4936 #if defined(CONFIG_NFS_V4_1)
4937 .rpc_call_prepare
= nfs4_delegreturn_prepare
,
4938 #endif /* CONFIG_NFS_V4_1 */
4939 .rpc_call_done
= nfs4_delegreturn_done
,
4940 .rpc_release
= nfs4_delegreturn_release
,
4943 static int _nfs4_proc_delegreturn(struct inode
*inode
, struct rpc_cred
*cred
, const nfs4_stateid
*stateid
, int issync
)
4945 struct nfs4_delegreturndata
*data
;
4946 struct nfs_server
*server
= NFS_SERVER(inode
);
4947 struct rpc_task
*task
;
4948 struct rpc_message msg
= {
4949 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_DELEGRETURN
],
4952 struct rpc_task_setup task_setup_data
= {
4953 .rpc_client
= server
->client
,
4954 .rpc_message
= &msg
,
4955 .callback_ops
= &nfs4_delegreturn_ops
,
4956 .flags
= RPC_TASK_ASYNC
,
4960 data
= kzalloc(sizeof(*data
), GFP_NOFS
);
4963 nfs4_init_sequence(&data
->args
.seq_args
, &data
->res
.seq_res
, 1);
4964 data
->args
.fhandle
= &data
->fh
;
4965 data
->args
.stateid
= &data
->stateid
;
4966 data
->args
.bitmask
= server
->cache_consistency_bitmask
;
4967 nfs_copy_fh(&data
->fh
, NFS_FH(inode
));
4968 nfs4_stateid_copy(&data
->stateid
, stateid
);
4969 data
->res
.fattr
= &data
->fattr
;
4970 data
->res
.server
= server
;
4971 nfs_fattr_init(data
->res
.fattr
);
4972 data
->timestamp
= jiffies
;
4973 data
->rpc_status
= 0;
4975 task_setup_data
.callback_data
= data
;
4976 msg
.rpc_argp
= &data
->args
;
4977 msg
.rpc_resp
= &data
->res
;
4978 task
= rpc_run_task(&task_setup_data
);
4980 return PTR_ERR(task
);
4983 status
= nfs4_wait_for_completion_rpc_task(task
);
4986 status
= data
->rpc_status
;
4988 nfs_post_op_update_inode_force_wcc(inode
, &data
->fattr
);
4990 nfs_refresh_inode(inode
, &data
->fattr
);
4996 int nfs4_proc_delegreturn(struct inode
*inode
, struct rpc_cred
*cred
, const nfs4_stateid
*stateid
, int issync
)
4998 struct nfs_server
*server
= NFS_SERVER(inode
);
4999 struct nfs4_exception exception
= { };
5002 err
= _nfs4_proc_delegreturn(inode
, cred
, stateid
, issync
);
5003 trace_nfs4_delegreturn(inode
, err
);
5005 case -NFS4ERR_STALE_STATEID
:
5006 case -NFS4ERR_EXPIRED
:
5010 err
= nfs4_handle_exception(server
, err
, &exception
);
5011 } while (exception
.retry
);
5015 #define NFS4_LOCK_MINTIMEOUT (1 * HZ)
5016 #define NFS4_LOCK_MAXTIMEOUT (30 * HZ)
5019 * sleep, with exponential backoff, and retry the LOCK operation.
5021 static unsigned long
5022 nfs4_set_lock_task_retry(unsigned long timeout
)
5024 freezable_schedule_timeout_killable_unsafe(timeout
);
5026 if (timeout
> NFS4_LOCK_MAXTIMEOUT
)
5027 return NFS4_LOCK_MAXTIMEOUT
;
5031 static int _nfs4_proc_getlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
5033 struct inode
*inode
= state
->inode
;
5034 struct nfs_server
*server
= NFS_SERVER(inode
);
5035 struct nfs_client
*clp
= server
->nfs_client
;
5036 struct nfs_lockt_args arg
= {
5037 .fh
= NFS_FH(inode
),
5040 struct nfs_lockt_res res
= {
5043 struct rpc_message msg
= {
5044 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOCKT
],
5047 .rpc_cred
= state
->owner
->so_cred
,
5049 struct nfs4_lock_state
*lsp
;
5052 arg
.lock_owner
.clientid
= clp
->cl_clientid
;
5053 status
= nfs4_set_lock_state(state
, request
);
5056 lsp
= request
->fl_u
.nfs4_fl
.owner
;
5057 arg
.lock_owner
.id
= lsp
->ls_seqid
.owner_id
;
5058 arg
.lock_owner
.s_dev
= server
->s_dev
;
5059 status
= nfs4_call_sync(server
->client
, server
, &msg
, &arg
.seq_args
, &res
.seq_res
, 1);
5062 request
->fl_type
= F_UNLCK
;
5064 case -NFS4ERR_DENIED
:
5067 request
->fl_ops
->fl_release_private(request
);
5072 static int nfs4_proc_getlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
5074 struct nfs4_exception exception
= { };
5078 err
= _nfs4_proc_getlk(state
, cmd
, request
);
5079 trace_nfs4_get_lock(request
, state
, cmd
, err
);
5080 err
= nfs4_handle_exception(NFS_SERVER(state
->inode
), err
,
5082 } while (exception
.retry
);
5086 static int do_vfs_lock(struct file
*file
, struct file_lock
*fl
)
5089 switch (fl
->fl_flags
& (FL_POSIX
|FL_FLOCK
)) {
5091 res
= posix_lock_file_wait(file
, fl
);
5094 res
= flock_lock_file_wait(file
, fl
);
5102 struct nfs4_unlockdata
{
5103 struct nfs_locku_args arg
;
5104 struct nfs_locku_res res
;
5105 struct nfs4_lock_state
*lsp
;
5106 struct nfs_open_context
*ctx
;
5107 struct file_lock fl
;
5108 const struct nfs_server
*server
;
5109 unsigned long timestamp
;
5112 static struct nfs4_unlockdata
*nfs4_alloc_unlockdata(struct file_lock
*fl
,
5113 struct nfs_open_context
*ctx
,
5114 struct nfs4_lock_state
*lsp
,
5115 struct nfs_seqid
*seqid
)
5117 struct nfs4_unlockdata
*p
;
5118 struct inode
*inode
= lsp
->ls_state
->inode
;
5120 p
= kzalloc(sizeof(*p
), GFP_NOFS
);
5123 p
->arg
.fh
= NFS_FH(inode
);
5125 p
->arg
.seqid
= seqid
;
5126 p
->res
.seqid
= seqid
;
5127 p
->arg
.stateid
= &lsp
->ls_stateid
;
5129 atomic_inc(&lsp
->ls_count
);
5130 /* Ensure we don't close file until we're done freeing locks! */
5131 p
->ctx
= get_nfs_open_context(ctx
);
5132 memcpy(&p
->fl
, fl
, sizeof(p
->fl
));
5133 p
->server
= NFS_SERVER(inode
);
5137 static void nfs4_locku_release_calldata(void *data
)
5139 struct nfs4_unlockdata
*calldata
= data
;
5140 nfs_free_seqid(calldata
->arg
.seqid
);
5141 nfs4_put_lock_state(calldata
->lsp
);
5142 put_nfs_open_context(calldata
->ctx
);
5146 static void nfs4_locku_done(struct rpc_task
*task
, void *data
)
5148 struct nfs4_unlockdata
*calldata
= data
;
5150 if (!nfs4_sequence_done(task
, &calldata
->res
.seq_res
))
5152 switch (task
->tk_status
) {
5154 nfs4_stateid_copy(&calldata
->lsp
->ls_stateid
,
5155 &calldata
->res
.stateid
);
5156 renew_lease(calldata
->server
, calldata
->timestamp
);
5158 case -NFS4ERR_BAD_STATEID
:
5159 case -NFS4ERR_OLD_STATEID
:
5160 case -NFS4ERR_STALE_STATEID
:
5161 case -NFS4ERR_EXPIRED
:
5164 if (nfs4_async_handle_error(task
, calldata
->server
, NULL
) == -EAGAIN
)
5165 rpc_restart_call_prepare(task
);
5167 nfs_release_seqid(calldata
->arg
.seqid
);
5170 static void nfs4_locku_prepare(struct rpc_task
*task
, void *data
)
5172 struct nfs4_unlockdata
*calldata
= data
;
5174 if (nfs_wait_on_sequence(calldata
->arg
.seqid
, task
) != 0)
5176 if (test_bit(NFS_LOCK_INITIALIZED
, &calldata
->lsp
->ls_flags
) == 0) {
5177 /* Note: exit _without_ running nfs4_locku_done */
5180 calldata
->timestamp
= jiffies
;
5181 if (nfs4_setup_sequence(calldata
->server
,
5182 &calldata
->arg
.seq_args
,
5183 &calldata
->res
.seq_res
,
5185 nfs_release_seqid(calldata
->arg
.seqid
);
5188 task
->tk_action
= NULL
;
5190 nfs4_sequence_done(task
, &calldata
->res
.seq_res
);
5193 static const struct rpc_call_ops nfs4_locku_ops
= {
5194 .rpc_call_prepare
= nfs4_locku_prepare
,
5195 .rpc_call_done
= nfs4_locku_done
,
5196 .rpc_release
= nfs4_locku_release_calldata
,
5199 static struct rpc_task
*nfs4_do_unlck(struct file_lock
*fl
,
5200 struct nfs_open_context
*ctx
,
5201 struct nfs4_lock_state
*lsp
,
5202 struct nfs_seqid
*seqid
)
5204 struct nfs4_unlockdata
*data
;
5205 struct rpc_message msg
= {
5206 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOCKU
],
5207 .rpc_cred
= ctx
->cred
,
5209 struct rpc_task_setup task_setup_data
= {
5210 .rpc_client
= NFS_CLIENT(lsp
->ls_state
->inode
),
5211 .rpc_message
= &msg
,
5212 .callback_ops
= &nfs4_locku_ops
,
5213 .workqueue
= nfsiod_workqueue
,
5214 .flags
= RPC_TASK_ASYNC
,
5217 /* Ensure this is an unlock - when canceling a lock, the
5218 * canceled lock is passed in, and it won't be an unlock.
5220 fl
->fl_type
= F_UNLCK
;
5222 data
= nfs4_alloc_unlockdata(fl
, ctx
, lsp
, seqid
);
5224 nfs_free_seqid(seqid
);
5225 return ERR_PTR(-ENOMEM
);
5228 nfs4_init_sequence(&data
->arg
.seq_args
, &data
->res
.seq_res
, 1);
5229 msg
.rpc_argp
= &data
->arg
;
5230 msg
.rpc_resp
= &data
->res
;
5231 task_setup_data
.callback_data
= data
;
5232 return rpc_run_task(&task_setup_data
);
5235 static int nfs4_proc_unlck(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
5237 struct inode
*inode
= state
->inode
;
5238 struct nfs4_state_owner
*sp
= state
->owner
;
5239 struct nfs_inode
*nfsi
= NFS_I(inode
);
5240 struct nfs_seqid
*seqid
;
5241 struct nfs4_lock_state
*lsp
;
5242 struct rpc_task
*task
;
5244 unsigned char fl_flags
= request
->fl_flags
;
5246 status
= nfs4_set_lock_state(state
, request
);
5247 /* Unlock _before_ we do the RPC call */
5248 request
->fl_flags
|= FL_EXISTS
;
5249 /* Exclude nfs_delegation_claim_locks() */
5250 mutex_lock(&sp
->so_delegreturn_mutex
);
5251 /* Exclude nfs4_reclaim_open_stateid() - note nesting! */
5252 down_read(&nfsi
->rwsem
);
5253 if (do_vfs_lock(request
->fl_file
, request
) == -ENOENT
) {
5254 up_read(&nfsi
->rwsem
);
5255 mutex_unlock(&sp
->so_delegreturn_mutex
);
5258 up_read(&nfsi
->rwsem
);
5259 mutex_unlock(&sp
->so_delegreturn_mutex
);
5262 /* Is this a delegated lock? */
5263 lsp
= request
->fl_u
.nfs4_fl
.owner
;
5264 if (test_bit(NFS_LOCK_INITIALIZED
, &lsp
->ls_flags
) == 0)
5266 seqid
= nfs_alloc_seqid(&lsp
->ls_seqid
, GFP_KERNEL
);
5270 task
= nfs4_do_unlck(request
, nfs_file_open_context(request
->fl_file
), lsp
, seqid
);
5271 status
= PTR_ERR(task
);
5274 status
= nfs4_wait_for_completion_rpc_task(task
);
5277 request
->fl_flags
= fl_flags
;
5278 trace_nfs4_unlock(request
, state
, F_SETLK
, status
);
5282 struct nfs4_lockdata
{
5283 struct nfs_lock_args arg
;
5284 struct nfs_lock_res res
;
5285 struct nfs4_lock_state
*lsp
;
5286 struct nfs_open_context
*ctx
;
5287 struct file_lock fl
;
5288 unsigned long timestamp
;
5291 struct nfs_server
*server
;
5294 static struct nfs4_lockdata
*nfs4_alloc_lockdata(struct file_lock
*fl
,
5295 struct nfs_open_context
*ctx
, struct nfs4_lock_state
*lsp
,
5298 struct nfs4_lockdata
*p
;
5299 struct inode
*inode
= lsp
->ls_state
->inode
;
5300 struct nfs_server
*server
= NFS_SERVER(inode
);
5302 p
= kzalloc(sizeof(*p
), gfp_mask
);
5306 p
->arg
.fh
= NFS_FH(inode
);
5308 p
->arg
.open_seqid
= nfs_alloc_seqid(&lsp
->ls_state
->owner
->so_seqid
, gfp_mask
);
5309 if (p
->arg
.open_seqid
== NULL
)
5311 p
->arg
.lock_seqid
= nfs_alloc_seqid(&lsp
->ls_seqid
, gfp_mask
);
5312 if (p
->arg
.lock_seqid
== NULL
)
5313 goto out_free_seqid
;
5314 p
->arg
.lock_stateid
= &lsp
->ls_stateid
;
5315 p
->arg
.lock_owner
.clientid
= server
->nfs_client
->cl_clientid
;
5316 p
->arg
.lock_owner
.id
= lsp
->ls_seqid
.owner_id
;
5317 p
->arg
.lock_owner
.s_dev
= server
->s_dev
;
5318 p
->res
.lock_seqid
= p
->arg
.lock_seqid
;
5321 atomic_inc(&lsp
->ls_count
);
5322 p
->ctx
= get_nfs_open_context(ctx
);
5323 memcpy(&p
->fl
, fl
, sizeof(p
->fl
));
5326 nfs_free_seqid(p
->arg
.open_seqid
);
5332 static void nfs4_lock_prepare(struct rpc_task
*task
, void *calldata
)
5334 struct nfs4_lockdata
*data
= calldata
;
5335 struct nfs4_state
*state
= data
->lsp
->ls_state
;
5337 dprintk("%s: begin!\n", __func__
);
5338 if (nfs_wait_on_sequence(data
->arg
.lock_seqid
, task
) != 0)
5340 /* Do we need to do an open_to_lock_owner? */
5341 if (!(data
->arg
.lock_seqid
->sequence
->flags
& NFS_SEQID_CONFIRMED
)) {
5342 if (nfs_wait_on_sequence(data
->arg
.open_seqid
, task
) != 0) {
5343 goto out_release_lock_seqid
;
5345 data
->arg
.open_stateid
= &state
->open_stateid
;
5346 data
->arg
.new_lock_owner
= 1;
5347 data
->res
.open_seqid
= data
->arg
.open_seqid
;
5349 data
->arg
.new_lock_owner
= 0;
5350 if (!nfs4_valid_open_stateid(state
)) {
5351 data
->rpc_status
= -EBADF
;
5352 task
->tk_action
= NULL
;
5353 goto out_release_open_seqid
;
5355 data
->timestamp
= jiffies
;
5356 if (nfs4_setup_sequence(data
->server
,
5357 &data
->arg
.seq_args
,
5361 out_release_open_seqid
:
5362 nfs_release_seqid(data
->arg
.open_seqid
);
5363 out_release_lock_seqid
:
5364 nfs_release_seqid(data
->arg
.lock_seqid
);
5366 nfs4_sequence_done(task
, &data
->res
.seq_res
);
5367 dprintk("%s: done!, ret = %d\n", __func__
, data
->rpc_status
);
5370 static void nfs4_lock_done(struct rpc_task
*task
, void *calldata
)
5372 struct nfs4_lockdata
*data
= calldata
;
5374 dprintk("%s: begin!\n", __func__
);
5376 if (!nfs4_sequence_done(task
, &data
->res
.seq_res
))
5379 data
->rpc_status
= task
->tk_status
;
5380 if (data
->arg
.new_lock_owner
!= 0) {
5381 if (data
->rpc_status
== 0)
5382 nfs_confirm_seqid(&data
->lsp
->ls_seqid
, 0);
5386 if (data
->rpc_status
== 0) {
5387 nfs4_stateid_copy(&data
->lsp
->ls_stateid
, &data
->res
.stateid
);
5388 set_bit(NFS_LOCK_INITIALIZED
, &data
->lsp
->ls_flags
);
5389 renew_lease(NFS_SERVER(data
->ctx
->dentry
->d_inode
), data
->timestamp
);
5392 dprintk("%s: done, ret = %d!\n", __func__
, data
->rpc_status
);
5395 static void nfs4_lock_release(void *calldata
)
5397 struct nfs4_lockdata
*data
= calldata
;
5399 dprintk("%s: begin!\n", __func__
);
5400 nfs_free_seqid(data
->arg
.open_seqid
);
5401 if (data
->cancelled
!= 0) {
5402 struct rpc_task
*task
;
5403 task
= nfs4_do_unlck(&data
->fl
, data
->ctx
, data
->lsp
,
5404 data
->arg
.lock_seqid
);
5406 rpc_put_task_async(task
);
5407 dprintk("%s: cancelling lock!\n", __func__
);
5409 nfs_free_seqid(data
->arg
.lock_seqid
);
5410 nfs4_put_lock_state(data
->lsp
);
5411 put_nfs_open_context(data
->ctx
);
5413 dprintk("%s: done!\n", __func__
);
5416 static const struct rpc_call_ops nfs4_lock_ops
= {
5417 .rpc_call_prepare
= nfs4_lock_prepare
,
5418 .rpc_call_done
= nfs4_lock_done
,
5419 .rpc_release
= nfs4_lock_release
,
5422 static void nfs4_handle_setlk_error(struct nfs_server
*server
, struct nfs4_lock_state
*lsp
, int new_lock_owner
, int error
)
5425 case -NFS4ERR_ADMIN_REVOKED
:
5426 case -NFS4ERR_BAD_STATEID
:
5427 lsp
->ls_seqid
.flags
&= ~NFS_SEQID_CONFIRMED
;
5428 if (new_lock_owner
!= 0 ||
5429 test_bit(NFS_LOCK_INITIALIZED
, &lsp
->ls_flags
) != 0)
5430 nfs4_schedule_stateid_recovery(server
, lsp
->ls_state
);
5432 case -NFS4ERR_STALE_STATEID
:
5433 lsp
->ls_seqid
.flags
&= ~NFS_SEQID_CONFIRMED
;
5434 case -NFS4ERR_EXPIRED
:
5435 nfs4_schedule_lease_recovery(server
->nfs_client
);
5439 static int _nfs4_do_setlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*fl
, int recovery_type
)
5441 struct nfs4_lockdata
*data
;
5442 struct rpc_task
*task
;
5443 struct rpc_message msg
= {
5444 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOCK
],
5445 .rpc_cred
= state
->owner
->so_cred
,
5447 struct rpc_task_setup task_setup_data
= {
5448 .rpc_client
= NFS_CLIENT(state
->inode
),
5449 .rpc_message
= &msg
,
5450 .callback_ops
= &nfs4_lock_ops
,
5451 .workqueue
= nfsiod_workqueue
,
5452 .flags
= RPC_TASK_ASYNC
,
5456 dprintk("%s: begin!\n", __func__
);
5457 data
= nfs4_alloc_lockdata(fl
, nfs_file_open_context(fl
->fl_file
),
5458 fl
->fl_u
.nfs4_fl
.owner
,
5459 recovery_type
== NFS_LOCK_NEW
? GFP_KERNEL
: GFP_NOFS
);
5463 data
->arg
.block
= 1;
5464 nfs4_init_sequence(&data
->arg
.seq_args
, &data
->res
.seq_res
, 1);
5465 msg
.rpc_argp
= &data
->arg
;
5466 msg
.rpc_resp
= &data
->res
;
5467 task_setup_data
.callback_data
= data
;
5468 if (recovery_type
> NFS_LOCK_NEW
) {
5469 if (recovery_type
== NFS_LOCK_RECLAIM
)
5470 data
->arg
.reclaim
= NFS_LOCK_RECLAIM
;
5471 nfs4_set_sequence_privileged(&data
->arg
.seq_args
);
5473 task
= rpc_run_task(&task_setup_data
);
5475 return PTR_ERR(task
);
5476 ret
= nfs4_wait_for_completion_rpc_task(task
);
5478 ret
= data
->rpc_status
;
5480 nfs4_handle_setlk_error(data
->server
, data
->lsp
,
5481 data
->arg
.new_lock_owner
, ret
);
5483 data
->cancelled
= 1;
5485 dprintk("%s: done, ret = %d!\n", __func__
, ret
);
5489 static int nfs4_lock_reclaim(struct nfs4_state
*state
, struct file_lock
*request
)
5491 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
5492 struct nfs4_exception exception
= {
5493 .inode
= state
->inode
,
5498 /* Cache the lock if possible... */
5499 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) != 0)
5501 err
= _nfs4_do_setlk(state
, F_SETLK
, request
, NFS_LOCK_RECLAIM
);
5502 trace_nfs4_lock_reclaim(request
, state
, F_SETLK
, err
);
5503 if (err
!= -NFS4ERR_DELAY
)
5505 nfs4_handle_exception(server
, err
, &exception
);
5506 } while (exception
.retry
);
5510 static int nfs4_lock_expired(struct nfs4_state
*state
, struct file_lock
*request
)
5512 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
5513 struct nfs4_exception exception
= {
5514 .inode
= state
->inode
,
5518 err
= nfs4_set_lock_state(state
, request
);
5522 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) != 0)
5524 err
= _nfs4_do_setlk(state
, F_SETLK
, request
, NFS_LOCK_EXPIRED
);
5525 trace_nfs4_lock_expired(request
, state
, F_SETLK
, err
);
5529 case -NFS4ERR_GRACE
:
5530 case -NFS4ERR_DELAY
:
5531 nfs4_handle_exception(server
, err
, &exception
);
5534 } while (exception
.retry
);
5539 #if defined(CONFIG_NFS_V4_1)
5541 * nfs41_check_expired_locks - possibly free a lock stateid
5543 * @state: NFSv4 state for an inode
5545 * Returns NFS_OK if recovery for this stateid is now finished.
5546 * Otherwise a negative NFS4ERR value is returned.
5548 static int nfs41_check_expired_locks(struct nfs4_state
*state
)
5550 int status
, ret
= -NFS4ERR_BAD_STATEID
;
5551 struct nfs4_lock_state
*lsp
;
5552 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
5554 list_for_each_entry(lsp
, &state
->lock_states
, ls_locks
) {
5555 if (test_bit(NFS_LOCK_INITIALIZED
, &lsp
->ls_flags
)) {
5556 struct rpc_cred
*cred
= lsp
->ls_state
->owner
->so_cred
;
5558 status
= nfs41_test_stateid(server
,
5561 trace_nfs4_test_lock_stateid(state
, lsp
, status
);
5562 if (status
!= NFS_OK
) {
5563 /* Free the stateid unless the server
5564 * informs us the stateid is unrecognized. */
5565 if (status
!= -NFS4ERR_BAD_STATEID
)
5566 nfs41_free_stateid(server
,
5569 clear_bit(NFS_LOCK_INITIALIZED
, &lsp
->ls_flags
);
5578 static int nfs41_lock_expired(struct nfs4_state
*state
, struct file_lock
*request
)
5580 int status
= NFS_OK
;
5582 if (test_bit(LK_STATE_IN_USE
, &state
->flags
))
5583 status
= nfs41_check_expired_locks(state
);
5584 if (status
!= NFS_OK
)
5585 status
= nfs4_lock_expired(state
, request
);
5590 static int _nfs4_proc_setlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
5592 struct nfs4_state_owner
*sp
= state
->owner
;
5593 struct nfs_inode
*nfsi
= NFS_I(state
->inode
);
5594 unsigned char fl_flags
= request
->fl_flags
;
5596 int status
= -ENOLCK
;
5598 if ((fl_flags
& FL_POSIX
) &&
5599 !test_bit(NFS_STATE_POSIX_LOCKS
, &state
->flags
))
5601 /* Is this a delegated open? */
5602 status
= nfs4_set_lock_state(state
, request
);
5605 request
->fl_flags
|= FL_ACCESS
;
5606 status
= do_vfs_lock(request
->fl_file
, request
);
5609 down_read(&nfsi
->rwsem
);
5610 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
)) {
5611 /* Yes: cache locks! */
5612 /* ...but avoid races with delegation recall... */
5613 request
->fl_flags
= fl_flags
& ~FL_SLEEP
;
5614 status
= do_vfs_lock(request
->fl_file
, request
);
5617 seq
= raw_seqcount_begin(&sp
->so_reclaim_seqcount
);
5618 up_read(&nfsi
->rwsem
);
5619 status
= _nfs4_do_setlk(state
, cmd
, request
, NFS_LOCK_NEW
);
5622 down_read(&nfsi
->rwsem
);
5623 if (read_seqcount_retry(&sp
->so_reclaim_seqcount
, seq
)) {
5624 status
= -NFS4ERR_DELAY
;
5627 /* Note: we always want to sleep here! */
5628 request
->fl_flags
= fl_flags
| FL_SLEEP
;
5629 if (do_vfs_lock(request
->fl_file
, request
) < 0)
5630 printk(KERN_WARNING
"NFS: %s: VFS is out of sync with lock "
5631 "manager!\n", __func__
);
5633 up_read(&nfsi
->rwsem
);
5635 request
->fl_flags
= fl_flags
;
5639 static int nfs4_proc_setlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
5641 struct nfs4_exception exception
= {
5643 .inode
= state
->inode
,
5648 err
= _nfs4_proc_setlk(state
, cmd
, request
);
5649 trace_nfs4_set_lock(request
, state
, cmd
, err
);
5650 if (err
== -NFS4ERR_DENIED
)
5652 err
= nfs4_handle_exception(NFS_SERVER(state
->inode
),
5654 } while (exception
.retry
);
5659 nfs4_proc_lock(struct file
*filp
, int cmd
, struct file_lock
*request
)
5661 struct nfs_open_context
*ctx
;
5662 struct nfs4_state
*state
;
5663 unsigned long timeout
= NFS4_LOCK_MINTIMEOUT
;
5666 /* verify open state */
5667 ctx
= nfs_file_open_context(filp
);
5670 if (request
->fl_start
< 0 || request
->fl_end
< 0)
5673 if (IS_GETLK(cmd
)) {
5675 return nfs4_proc_getlk(state
, F_GETLK
, request
);
5679 if (!(IS_SETLK(cmd
) || IS_SETLKW(cmd
)))
5682 if (request
->fl_type
== F_UNLCK
) {
5684 return nfs4_proc_unlck(state
, cmd
, request
);
5691 * Don't rely on the VFS having checked the file open mode,
5692 * since it won't do this for flock() locks.
5694 switch (request
->fl_type
) {
5696 if (!(filp
->f_mode
& FMODE_READ
))
5700 if (!(filp
->f_mode
& FMODE_WRITE
))
5705 status
= nfs4_proc_setlk(state
, cmd
, request
);
5706 if ((status
!= -EAGAIN
) || IS_SETLK(cmd
))
5708 timeout
= nfs4_set_lock_task_retry(timeout
);
5709 status
= -ERESTARTSYS
;
5712 } while(status
< 0);
5716 int nfs4_lock_delegation_recall(struct file_lock
*fl
, struct nfs4_state
*state
, const nfs4_stateid
*stateid
)
5718 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
5721 err
= nfs4_set_lock_state(state
, fl
);
5724 err
= _nfs4_do_setlk(state
, F_SETLK
, fl
, NFS_LOCK_NEW
);
5725 return nfs4_handle_delegation_recall_error(server
, state
, stateid
, err
);
5728 struct nfs_release_lockowner_data
{
5729 struct nfs4_lock_state
*lsp
;
5730 struct nfs_server
*server
;
5731 struct nfs_release_lockowner_args args
;
5734 static void nfs4_release_lockowner_release(void *calldata
)
5736 struct nfs_release_lockowner_data
*data
= calldata
;
5737 nfs4_free_lock_state(data
->server
, data
->lsp
);
5741 static const struct rpc_call_ops nfs4_release_lockowner_ops
= {
5742 .rpc_release
= nfs4_release_lockowner_release
,
5745 static int nfs4_release_lockowner(struct nfs_server
*server
, struct nfs4_lock_state
*lsp
)
5747 struct nfs_release_lockowner_data
*data
;
5748 struct rpc_message msg
= {
5749 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RELEASE_LOCKOWNER
],
5752 if (server
->nfs_client
->cl_mvops
->minor_version
!= 0)
5754 data
= kmalloc(sizeof(*data
), GFP_NOFS
);
5758 data
->server
= server
;
5759 data
->args
.lock_owner
.clientid
= server
->nfs_client
->cl_clientid
;
5760 data
->args
.lock_owner
.id
= lsp
->ls_seqid
.owner_id
;
5761 data
->args
.lock_owner
.s_dev
= server
->s_dev
;
5762 msg
.rpc_argp
= &data
->args
;
5763 rpc_call_async(server
->client
, &msg
, 0, &nfs4_release_lockowner_ops
, data
);
5767 #define XATTR_NAME_NFSV4_ACL "system.nfs4_acl"
5769 static int nfs4_xattr_set_nfs4_acl(struct dentry
*dentry
, const char *key
,
5770 const void *buf
, size_t buflen
,
5771 int flags
, int type
)
5773 if (strcmp(key
, "") != 0)
5776 return nfs4_proc_set_acl(dentry
->d_inode
, buf
, buflen
);
5779 static int nfs4_xattr_get_nfs4_acl(struct dentry
*dentry
, const char *key
,
5780 void *buf
, size_t buflen
, int type
)
5782 if (strcmp(key
, "") != 0)
5785 return nfs4_proc_get_acl(dentry
->d_inode
, buf
, buflen
);
5788 static size_t nfs4_xattr_list_nfs4_acl(struct dentry
*dentry
, char *list
,
5789 size_t list_len
, const char *name
,
5790 size_t name_len
, int type
)
5792 size_t len
= sizeof(XATTR_NAME_NFSV4_ACL
);
5794 if (!nfs4_server_supports_acls(NFS_SERVER(dentry
->d_inode
)))
5797 if (list
&& len
<= list_len
)
5798 memcpy(list
, XATTR_NAME_NFSV4_ACL
, len
);
5802 #ifdef CONFIG_NFS_V4_SECURITY_LABEL
5803 static inline int nfs4_server_supports_labels(struct nfs_server
*server
)
5805 return server
->caps
& NFS_CAP_SECURITY_LABEL
;
5808 static int nfs4_xattr_set_nfs4_label(struct dentry
*dentry
, const char *key
,
5809 const void *buf
, size_t buflen
,
5810 int flags
, int type
)
5812 if (security_ismaclabel(key
))
5813 return nfs4_set_security_label(dentry
, buf
, buflen
);
5818 static int nfs4_xattr_get_nfs4_label(struct dentry
*dentry
, const char *key
,
5819 void *buf
, size_t buflen
, int type
)
5821 if (security_ismaclabel(key
))
5822 return nfs4_get_security_label(dentry
->d_inode
, buf
, buflen
);
5826 static size_t nfs4_xattr_list_nfs4_label(struct dentry
*dentry
, char *list
,
5827 size_t list_len
, const char *name
,
5828 size_t name_len
, int type
)
5832 if (nfs_server_capable(dentry
->d_inode
, NFS_CAP_SECURITY_LABEL
)) {
5833 len
= security_inode_listsecurity(dentry
->d_inode
, NULL
, 0);
5834 if (list
&& len
<= list_len
)
5835 security_inode_listsecurity(dentry
->d_inode
, list
, len
);
5840 static const struct xattr_handler nfs4_xattr_nfs4_label_handler
= {
5841 .prefix
= XATTR_SECURITY_PREFIX
,
5842 .list
= nfs4_xattr_list_nfs4_label
,
5843 .get
= nfs4_xattr_get_nfs4_label
,
5844 .set
= nfs4_xattr_set_nfs4_label
,
5850 * nfs_fhget will use either the mounted_on_fileid or the fileid
5852 static void nfs_fixup_referral_attributes(struct nfs_fattr
*fattr
)
5854 if (!(((fattr
->valid
& NFS_ATTR_FATTR_MOUNTED_ON_FILEID
) ||
5855 (fattr
->valid
& NFS_ATTR_FATTR_FILEID
)) &&
5856 (fattr
->valid
& NFS_ATTR_FATTR_FSID
) &&
5857 (fattr
->valid
& NFS_ATTR_FATTR_V4_LOCATIONS
)))
5860 fattr
->valid
|= NFS_ATTR_FATTR_TYPE
| NFS_ATTR_FATTR_MODE
|
5861 NFS_ATTR_FATTR_NLINK
| NFS_ATTR_FATTR_V4_REFERRAL
;
5862 fattr
->mode
= S_IFDIR
| S_IRUGO
| S_IXUGO
;
5866 static int _nfs4_proc_fs_locations(struct rpc_clnt
*client
, struct inode
*dir
,
5867 const struct qstr
*name
,
5868 struct nfs4_fs_locations
*fs_locations
,
5871 struct nfs_server
*server
= NFS_SERVER(dir
);
5873 [0] = FATTR4_WORD0_FSID
| FATTR4_WORD0_FS_LOCATIONS
,
5875 struct nfs4_fs_locations_arg args
= {
5876 .dir_fh
= NFS_FH(dir
),
5881 struct nfs4_fs_locations_res res
= {
5882 .fs_locations
= fs_locations
,
5884 struct rpc_message msg
= {
5885 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_FS_LOCATIONS
],
5891 dprintk("%s: start\n", __func__
);
5893 /* Ask for the fileid of the absent filesystem if mounted_on_fileid
5894 * is not supported */
5895 if (NFS_SERVER(dir
)->attr_bitmask
[1] & FATTR4_WORD1_MOUNTED_ON_FILEID
)
5896 bitmask
[1] |= FATTR4_WORD1_MOUNTED_ON_FILEID
;
5898 bitmask
[0] |= FATTR4_WORD0_FILEID
;
5900 nfs_fattr_init(&fs_locations
->fattr
);
5901 fs_locations
->server
= server
;
5902 fs_locations
->nlocations
= 0;
5903 status
= nfs4_call_sync(client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
5904 dprintk("%s: returned status = %d\n", __func__
, status
);
5908 int nfs4_proc_fs_locations(struct rpc_clnt
*client
, struct inode
*dir
,
5909 const struct qstr
*name
,
5910 struct nfs4_fs_locations
*fs_locations
,
5913 struct nfs4_exception exception
= { };
5916 err
= _nfs4_proc_fs_locations(client
, dir
, name
,
5917 fs_locations
, page
);
5918 trace_nfs4_get_fs_locations(dir
, name
, err
);
5919 err
= nfs4_handle_exception(NFS_SERVER(dir
), err
,
5921 } while (exception
.retry
);
5926 * If 'use_integrity' is true and the state managment nfs_client
5927 * cl_rpcclient is using krb5i/p, use the integrity protected cl_rpcclient
5928 * and the machine credential as per RFC3530bis and RFC5661 Security
5929 * Considerations sections. Otherwise, just use the user cred with the
5930 * filesystem's rpc_client.
5932 static int _nfs4_proc_secinfo(struct inode
*dir
, const struct qstr
*name
, struct nfs4_secinfo_flavors
*flavors
, bool use_integrity
)
5935 struct nfs4_secinfo_arg args
= {
5936 .dir_fh
= NFS_FH(dir
),
5939 struct nfs4_secinfo_res res
= {
5942 struct rpc_message msg
= {
5943 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SECINFO
],
5947 struct rpc_clnt
*clnt
= NFS_SERVER(dir
)->client
;
5949 if (use_integrity
) {
5950 clnt
= NFS_SERVER(dir
)->nfs_client
->cl_rpcclient
;
5951 msg
.rpc_cred
= nfs4_get_clid_cred(NFS_SERVER(dir
)->nfs_client
);
5954 dprintk("NFS call secinfo %s\n", name
->name
);
5955 status
= nfs4_call_sync(clnt
, NFS_SERVER(dir
), &msg
, &args
.seq_args
,
5957 dprintk("NFS reply secinfo: %d\n", status
);
5960 put_rpccred(msg
.rpc_cred
);
5965 int nfs4_proc_secinfo(struct inode
*dir
, const struct qstr
*name
,
5966 struct nfs4_secinfo_flavors
*flavors
)
5968 struct nfs4_exception exception
= { };
5971 err
= -NFS4ERR_WRONGSEC
;
5973 /* try to use integrity protection with machine cred */
5974 if (_nfs4_is_integrity_protected(NFS_SERVER(dir
)->nfs_client
))
5975 err
= _nfs4_proc_secinfo(dir
, name
, flavors
, true);
5978 * if unable to use integrity protection, or SECINFO with
5979 * integrity protection returns NFS4ERR_WRONGSEC (which is
5980 * disallowed by spec, but exists in deployed servers) use
5981 * the current filesystem's rpc_client and the user cred.
5983 if (err
== -NFS4ERR_WRONGSEC
)
5984 err
= _nfs4_proc_secinfo(dir
, name
, flavors
, false);
5986 trace_nfs4_secinfo(dir
, name
, err
);
5987 err
= nfs4_handle_exception(NFS_SERVER(dir
), err
,
5989 } while (exception
.retry
);
5993 #ifdef CONFIG_NFS_V4_1
5995 * Check the exchange flags returned by the server for invalid flags, having
5996 * both PNFS and NON_PNFS flags set, and not having one of NON_PNFS, PNFS, or
5999 static int nfs4_check_cl_exchange_flags(u32 flags
)
6001 if (flags
& ~EXCHGID4_FLAG_MASK_R
)
6003 if ((flags
& EXCHGID4_FLAG_USE_PNFS_MDS
) &&
6004 (flags
& EXCHGID4_FLAG_USE_NON_PNFS
))
6006 if (!(flags
& (EXCHGID4_FLAG_MASK_PNFS
)))
6010 return -NFS4ERR_INVAL
;
6014 nfs41_same_server_scope(struct nfs41_server_scope
*a
,
6015 struct nfs41_server_scope
*b
)
6017 if (a
->server_scope_sz
== b
->server_scope_sz
&&
6018 memcmp(a
->server_scope
, b
->server_scope
, a
->server_scope_sz
) == 0)
6025 * nfs4_proc_bind_conn_to_session()
6027 * The 4.1 client currently uses the same TCP connection for the
6028 * fore and backchannel.
6030 int nfs4_proc_bind_conn_to_session(struct nfs_client
*clp
, struct rpc_cred
*cred
)
6033 struct nfs41_bind_conn_to_session_res res
;
6034 struct rpc_message msg
= {
6036 &nfs4_procedures
[NFSPROC4_CLNT_BIND_CONN_TO_SESSION
],
6042 dprintk("--> %s\n", __func__
);
6044 res
.session
= kzalloc(sizeof(struct nfs4_session
), GFP_NOFS
);
6045 if (unlikely(res
.session
== NULL
)) {
6050 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
6051 trace_nfs4_bind_conn_to_session(clp
, status
);
6053 if (memcmp(res
.session
->sess_id
.data
,
6054 clp
->cl_session
->sess_id
.data
, NFS4_MAX_SESSIONID_LEN
)) {
6055 dprintk("NFS: %s: Session ID mismatch\n", __func__
);
6059 if (res
.dir
!= NFS4_CDFS4_BOTH
) {
6060 dprintk("NFS: %s: Unexpected direction from server\n",
6065 if (res
.use_conn_in_rdma_mode
) {
6066 dprintk("NFS: %s: Server returned RDMA mode = true\n",
6075 dprintk("<-- %s status= %d\n", __func__
, status
);
6080 * nfs4_proc_exchange_id()
6082 * Returns zero, a negative errno, or a negative NFS4ERR status code.
6084 * Since the clientid has expired, all compounds using sessions
6085 * associated with the stale clientid will be returning
6086 * NFS4ERR_BADSESSION in the sequence operation, and will therefore
6087 * be in some phase of session reset.
6089 int nfs4_proc_exchange_id(struct nfs_client
*clp
, struct rpc_cred
*cred
)
6091 nfs4_verifier verifier
;
6092 struct nfs41_exchange_id_args args
= {
6093 .verifier
= &verifier
,
6095 .flags
= EXCHGID4_FLAG_SUPP_MOVED_REFER
|
6096 EXCHGID4_FLAG_BIND_PRINC_STATEID
,
6098 struct nfs41_exchange_id_res res
= {
6102 struct rpc_message msg
= {
6103 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_EXCHANGE_ID
],
6109 nfs4_init_boot_verifier(clp
, &verifier
);
6110 args
.id_len
= nfs4_init_uniform_client_string(clp
, args
.id
,
6112 dprintk("NFS call exchange_id auth=%s, '%.*s'\n",
6113 clp
->cl_rpcclient
->cl_auth
->au_ops
->au_name
,
6114 args
.id_len
, args
.id
);
6116 res
.server_owner
= kzalloc(sizeof(struct nfs41_server_owner
),
6118 if (unlikely(res
.server_owner
== NULL
)) {
6123 res
.server_scope
= kzalloc(sizeof(struct nfs41_server_scope
),
6125 if (unlikely(res
.server_scope
== NULL
)) {
6127 goto out_server_owner
;
6130 res
.impl_id
= kzalloc(sizeof(struct nfs41_impl_id
), GFP_NOFS
);
6131 if (unlikely(res
.impl_id
== NULL
)) {
6133 goto out_server_scope
;
6136 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
6137 trace_nfs4_exchange_id(clp
, status
);
6139 status
= nfs4_check_cl_exchange_flags(res
.flags
);
6142 clp
->cl_clientid
= res
.clientid
;
6143 clp
->cl_exchange_flags
= (res
.flags
& ~EXCHGID4_FLAG_CONFIRMED_R
);
6144 if (!(res
.flags
& EXCHGID4_FLAG_CONFIRMED_R
))
6145 clp
->cl_seqid
= res
.seqid
;
6147 kfree(clp
->cl_serverowner
);
6148 clp
->cl_serverowner
= res
.server_owner
;
6149 res
.server_owner
= NULL
;
6151 /* use the most recent implementation id */
6152 kfree(clp
->cl_implid
);
6153 clp
->cl_implid
= res
.impl_id
;
6155 if (clp
->cl_serverscope
!= NULL
&&
6156 !nfs41_same_server_scope(clp
->cl_serverscope
,
6157 res
.server_scope
)) {
6158 dprintk("%s: server_scope mismatch detected\n",
6160 set_bit(NFS4CLNT_SERVER_SCOPE_MISMATCH
, &clp
->cl_state
);
6161 kfree(clp
->cl_serverscope
);
6162 clp
->cl_serverscope
= NULL
;
6165 if (clp
->cl_serverscope
== NULL
) {
6166 clp
->cl_serverscope
= res
.server_scope
;
6173 kfree(res
.server_owner
);
6175 kfree(res
.server_scope
);
6177 if (clp
->cl_implid
!= NULL
)
6178 dprintk("NFS reply exchange_id: Server Implementation ID: "
6179 "domain: %s, name: %s, date: %llu,%u\n",
6180 clp
->cl_implid
->domain
, clp
->cl_implid
->name
,
6181 clp
->cl_implid
->date
.seconds
,
6182 clp
->cl_implid
->date
.nseconds
);
6183 dprintk("NFS reply exchange_id: %d\n", status
);
6187 static int _nfs4_proc_destroy_clientid(struct nfs_client
*clp
,
6188 struct rpc_cred
*cred
)
6190 struct rpc_message msg
= {
6191 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_DESTROY_CLIENTID
],
6197 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
6198 trace_nfs4_destroy_clientid(clp
, status
);
6200 dprintk("NFS: Got error %d from the server %s on "
6201 "DESTROY_CLIENTID.", status
, clp
->cl_hostname
);
6205 static int nfs4_proc_destroy_clientid(struct nfs_client
*clp
,
6206 struct rpc_cred
*cred
)
6211 for (loop
= NFS4_MAX_LOOP_ON_RECOVER
; loop
!= 0; loop
--) {
6212 ret
= _nfs4_proc_destroy_clientid(clp
, cred
);
6214 case -NFS4ERR_DELAY
:
6215 case -NFS4ERR_CLIENTID_BUSY
:
6225 int nfs4_destroy_clientid(struct nfs_client
*clp
)
6227 struct rpc_cred
*cred
;
6230 if (clp
->cl_mvops
->minor_version
< 1)
6232 if (clp
->cl_exchange_flags
== 0)
6234 if (clp
->cl_preserve_clid
)
6236 cred
= nfs4_get_clid_cred(clp
);
6237 ret
= nfs4_proc_destroy_clientid(clp
, cred
);
6242 case -NFS4ERR_STALE_CLIENTID
:
6243 clp
->cl_exchange_flags
= 0;
6249 struct nfs4_get_lease_time_data
{
6250 struct nfs4_get_lease_time_args
*args
;
6251 struct nfs4_get_lease_time_res
*res
;
6252 struct nfs_client
*clp
;
6255 static void nfs4_get_lease_time_prepare(struct rpc_task
*task
,
6258 struct nfs4_get_lease_time_data
*data
=
6259 (struct nfs4_get_lease_time_data
*)calldata
;
6261 dprintk("--> %s\n", __func__
);
6262 /* just setup sequence, do not trigger session recovery
6263 since we're invoked within one */
6264 nfs41_setup_sequence(data
->clp
->cl_session
,
6265 &data
->args
->la_seq_args
,
6266 &data
->res
->lr_seq_res
,
6268 dprintk("<-- %s\n", __func__
);
6272 * Called from nfs4_state_manager thread for session setup, so don't recover
6273 * from sequence operation or clientid errors.
6275 static void nfs4_get_lease_time_done(struct rpc_task
*task
, void *calldata
)
6277 struct nfs4_get_lease_time_data
*data
=
6278 (struct nfs4_get_lease_time_data
*)calldata
;
6280 dprintk("--> %s\n", __func__
);
6281 if (!nfs41_sequence_done(task
, &data
->res
->lr_seq_res
))
6283 switch (task
->tk_status
) {
6284 case -NFS4ERR_DELAY
:
6285 case -NFS4ERR_GRACE
:
6286 dprintk("%s Retry: tk_status %d\n", __func__
, task
->tk_status
);
6287 rpc_delay(task
, NFS4_POLL_RETRY_MIN
);
6288 task
->tk_status
= 0;
6290 case -NFS4ERR_RETRY_UNCACHED_REP
:
6291 rpc_restart_call_prepare(task
);
6294 dprintk("<-- %s\n", __func__
);
6297 static const struct rpc_call_ops nfs4_get_lease_time_ops
= {
6298 .rpc_call_prepare
= nfs4_get_lease_time_prepare
,
6299 .rpc_call_done
= nfs4_get_lease_time_done
,
6302 int nfs4_proc_get_lease_time(struct nfs_client
*clp
, struct nfs_fsinfo
*fsinfo
)
6304 struct rpc_task
*task
;
6305 struct nfs4_get_lease_time_args args
;
6306 struct nfs4_get_lease_time_res res
= {
6307 .lr_fsinfo
= fsinfo
,
6309 struct nfs4_get_lease_time_data data
= {
6314 struct rpc_message msg
= {
6315 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GET_LEASE_TIME
],
6319 struct rpc_task_setup task_setup
= {
6320 .rpc_client
= clp
->cl_rpcclient
,
6321 .rpc_message
= &msg
,
6322 .callback_ops
= &nfs4_get_lease_time_ops
,
6323 .callback_data
= &data
,
6324 .flags
= RPC_TASK_TIMEOUT
,
6328 nfs4_init_sequence(&args
.la_seq_args
, &res
.lr_seq_res
, 0);
6329 nfs4_set_sequence_privileged(&args
.la_seq_args
);
6330 dprintk("--> %s\n", __func__
);
6331 task
= rpc_run_task(&task_setup
);
6334 status
= PTR_ERR(task
);
6336 status
= task
->tk_status
;
6339 dprintk("<-- %s return %d\n", __func__
, status
);
6345 * Initialize the values to be used by the client in CREATE_SESSION
6346 * If nfs4_init_session set the fore channel request and response sizes,
6349 * Set the back channel max_resp_sz_cached to zero to force the client to
6350 * always set csa_cachethis to FALSE because the current implementation
6351 * of the back channel DRC only supports caching the CB_SEQUENCE operation.
6353 static void nfs4_init_channel_attrs(struct nfs41_create_session_args
*args
)
6355 unsigned int max_rqst_sz
, max_resp_sz
;
6357 max_rqst_sz
= NFS_MAX_FILE_IO_SIZE
+ nfs41_maxwrite_overhead
;
6358 max_resp_sz
= NFS_MAX_FILE_IO_SIZE
+ nfs41_maxread_overhead
;
6360 /* Fore channel attributes */
6361 args
->fc_attrs
.max_rqst_sz
= max_rqst_sz
;
6362 args
->fc_attrs
.max_resp_sz
= max_resp_sz
;
6363 args
->fc_attrs
.max_ops
= NFS4_MAX_OPS
;
6364 args
->fc_attrs
.max_reqs
= max_session_slots
;
6366 dprintk("%s: Fore Channel : max_rqst_sz=%u max_resp_sz=%u "
6367 "max_ops=%u max_reqs=%u\n",
6369 args
->fc_attrs
.max_rqst_sz
, args
->fc_attrs
.max_resp_sz
,
6370 args
->fc_attrs
.max_ops
, args
->fc_attrs
.max_reqs
);
6372 /* Back channel attributes */
6373 args
->bc_attrs
.max_rqst_sz
= PAGE_SIZE
;
6374 args
->bc_attrs
.max_resp_sz
= PAGE_SIZE
;
6375 args
->bc_attrs
.max_resp_sz_cached
= 0;
6376 args
->bc_attrs
.max_ops
= NFS4_MAX_BACK_CHANNEL_OPS
;
6377 args
->bc_attrs
.max_reqs
= 1;
6379 dprintk("%s: Back Channel : max_rqst_sz=%u max_resp_sz=%u "
6380 "max_resp_sz_cached=%u max_ops=%u max_reqs=%u\n",
6382 args
->bc_attrs
.max_rqst_sz
, args
->bc_attrs
.max_resp_sz
,
6383 args
->bc_attrs
.max_resp_sz_cached
, args
->bc_attrs
.max_ops
,
6384 args
->bc_attrs
.max_reqs
);
6387 static int nfs4_verify_fore_channel_attrs(struct nfs41_create_session_args
*args
, struct nfs4_session
*session
)
6389 struct nfs4_channel_attrs
*sent
= &args
->fc_attrs
;
6390 struct nfs4_channel_attrs
*rcvd
= &session
->fc_attrs
;
6392 if (rcvd
->max_resp_sz
> sent
->max_resp_sz
)
6395 * Our requested max_ops is the minimum we need; we're not
6396 * prepared to break up compounds into smaller pieces than that.
6397 * So, no point even trying to continue if the server won't
6400 if (rcvd
->max_ops
< sent
->max_ops
)
6402 if (rcvd
->max_reqs
== 0)
6404 if (rcvd
->max_reqs
> NFS4_MAX_SLOT_TABLE
)
6405 rcvd
->max_reqs
= NFS4_MAX_SLOT_TABLE
;
6409 static int nfs4_verify_back_channel_attrs(struct nfs41_create_session_args
*args
, struct nfs4_session
*session
)
6411 struct nfs4_channel_attrs
*sent
= &args
->bc_attrs
;
6412 struct nfs4_channel_attrs
*rcvd
= &session
->bc_attrs
;
6414 if (rcvd
->max_rqst_sz
> sent
->max_rqst_sz
)
6416 if (rcvd
->max_resp_sz
< sent
->max_resp_sz
)
6418 if (rcvd
->max_resp_sz_cached
> sent
->max_resp_sz_cached
)
6420 /* These would render the backchannel useless: */
6421 if (rcvd
->max_ops
!= sent
->max_ops
)
6423 if (rcvd
->max_reqs
!= sent
->max_reqs
)
6428 static int nfs4_verify_channel_attrs(struct nfs41_create_session_args
*args
,
6429 struct nfs4_session
*session
)
6433 ret
= nfs4_verify_fore_channel_attrs(args
, session
);
6436 return nfs4_verify_back_channel_attrs(args
, session
);
6439 static int _nfs4_proc_create_session(struct nfs_client
*clp
,
6440 struct rpc_cred
*cred
)
6442 struct nfs4_session
*session
= clp
->cl_session
;
6443 struct nfs41_create_session_args args
= {
6445 .cb_program
= NFS4_CALLBACK
,
6447 struct nfs41_create_session_res res
= {
6450 struct rpc_message msg
= {
6451 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_CREATE_SESSION
],
6458 nfs4_init_channel_attrs(&args
);
6459 args
.flags
= (SESSION4_PERSIST
| SESSION4_BACK_CHAN
);
6461 status
= rpc_call_sync(session
->clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
6462 trace_nfs4_create_session(clp
, status
);
6465 /* Verify the session's negotiated channel_attrs values */
6466 status
= nfs4_verify_channel_attrs(&args
, session
);
6467 /* Increment the clientid slot sequence id */
6475 * Issues a CREATE_SESSION operation to the server.
6476 * It is the responsibility of the caller to verify the session is
6477 * expired before calling this routine.
6479 int nfs4_proc_create_session(struct nfs_client
*clp
, struct rpc_cred
*cred
)
6483 struct nfs4_session
*session
= clp
->cl_session
;
6485 dprintk("--> %s clp=%p session=%p\n", __func__
, clp
, session
);
6487 status
= _nfs4_proc_create_session(clp
, cred
);
6491 /* Init or reset the session slot tables */
6492 status
= nfs4_setup_session_slot_tables(session
);
6493 dprintk("slot table setup returned %d\n", status
);
6497 ptr
= (unsigned *)&session
->sess_id
.data
[0];
6498 dprintk("%s client>seqid %d sessionid %u:%u:%u:%u\n", __func__
,
6499 clp
->cl_seqid
, ptr
[0], ptr
[1], ptr
[2], ptr
[3]);
6501 dprintk("<-- %s\n", __func__
);
6506 * Issue the over-the-wire RPC DESTROY_SESSION.
6507 * The caller must serialize access to this routine.
6509 int nfs4_proc_destroy_session(struct nfs4_session
*session
,
6510 struct rpc_cred
*cred
)
6512 struct rpc_message msg
= {
6513 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_DESTROY_SESSION
],
6514 .rpc_argp
= session
,
6519 dprintk("--> nfs4_proc_destroy_session\n");
6521 /* session is still being setup */
6522 if (session
->clp
->cl_cons_state
!= NFS_CS_READY
)
6525 status
= rpc_call_sync(session
->clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
6526 trace_nfs4_destroy_session(session
->clp
, status
);
6529 dprintk("NFS: Got error %d from the server on DESTROY_SESSION. "
6530 "Session has been destroyed regardless...\n", status
);
6532 dprintk("<-- nfs4_proc_destroy_session\n");
6537 * Renew the cl_session lease.
6539 struct nfs4_sequence_data
{
6540 struct nfs_client
*clp
;
6541 struct nfs4_sequence_args args
;
6542 struct nfs4_sequence_res res
;
6545 static void nfs41_sequence_release(void *data
)
6547 struct nfs4_sequence_data
*calldata
= data
;
6548 struct nfs_client
*clp
= calldata
->clp
;
6550 if (atomic_read(&clp
->cl_count
) > 1)
6551 nfs4_schedule_state_renewal(clp
);
6552 nfs_put_client(clp
);
6556 static int nfs41_sequence_handle_errors(struct rpc_task
*task
, struct nfs_client
*clp
)
6558 switch(task
->tk_status
) {
6559 case -NFS4ERR_DELAY
:
6560 rpc_delay(task
, NFS4_POLL_RETRY_MAX
);
6563 nfs4_schedule_lease_recovery(clp
);
6568 static void nfs41_sequence_call_done(struct rpc_task
*task
, void *data
)
6570 struct nfs4_sequence_data
*calldata
= data
;
6571 struct nfs_client
*clp
= calldata
->clp
;
6573 if (!nfs41_sequence_done(task
, task
->tk_msg
.rpc_resp
))
6576 trace_nfs4_sequence(clp
, task
->tk_status
);
6577 if (task
->tk_status
< 0) {
6578 dprintk("%s ERROR %d\n", __func__
, task
->tk_status
);
6579 if (atomic_read(&clp
->cl_count
) == 1)
6582 if (nfs41_sequence_handle_errors(task
, clp
) == -EAGAIN
) {
6583 rpc_restart_call_prepare(task
);
6587 dprintk("%s rpc_cred %p\n", __func__
, task
->tk_msg
.rpc_cred
);
6589 dprintk("<-- %s\n", __func__
);
6592 static void nfs41_sequence_prepare(struct rpc_task
*task
, void *data
)
6594 struct nfs4_sequence_data
*calldata
= data
;
6595 struct nfs_client
*clp
= calldata
->clp
;
6596 struct nfs4_sequence_args
*args
;
6597 struct nfs4_sequence_res
*res
;
6599 args
= task
->tk_msg
.rpc_argp
;
6600 res
= task
->tk_msg
.rpc_resp
;
6602 nfs41_setup_sequence(clp
->cl_session
, args
, res
, task
);
6605 static const struct rpc_call_ops nfs41_sequence_ops
= {
6606 .rpc_call_done
= nfs41_sequence_call_done
,
6607 .rpc_call_prepare
= nfs41_sequence_prepare
,
6608 .rpc_release
= nfs41_sequence_release
,
6611 static struct rpc_task
*_nfs41_proc_sequence(struct nfs_client
*clp
,
6612 struct rpc_cred
*cred
,
6615 struct nfs4_sequence_data
*calldata
;
6616 struct rpc_message msg
= {
6617 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SEQUENCE
],
6620 struct rpc_task_setup task_setup_data
= {
6621 .rpc_client
= clp
->cl_rpcclient
,
6622 .rpc_message
= &msg
,
6623 .callback_ops
= &nfs41_sequence_ops
,
6624 .flags
= RPC_TASK_ASYNC
| RPC_TASK_TIMEOUT
,
6627 if (!atomic_inc_not_zero(&clp
->cl_count
))
6628 return ERR_PTR(-EIO
);
6629 calldata
= kzalloc(sizeof(*calldata
), GFP_NOFS
);
6630 if (calldata
== NULL
) {
6631 nfs_put_client(clp
);
6632 return ERR_PTR(-ENOMEM
);
6634 nfs4_init_sequence(&calldata
->args
, &calldata
->res
, 0);
6636 nfs4_set_sequence_privileged(&calldata
->args
);
6637 msg
.rpc_argp
= &calldata
->args
;
6638 msg
.rpc_resp
= &calldata
->res
;
6639 calldata
->clp
= clp
;
6640 task_setup_data
.callback_data
= calldata
;
6642 return rpc_run_task(&task_setup_data
);
6645 static int nfs41_proc_async_sequence(struct nfs_client
*clp
, struct rpc_cred
*cred
, unsigned renew_flags
)
6647 struct rpc_task
*task
;
6650 if ((renew_flags
& NFS4_RENEW_TIMEOUT
) == 0)
6652 task
= _nfs41_proc_sequence(clp
, cred
, false);
6654 ret
= PTR_ERR(task
);
6656 rpc_put_task_async(task
);
6657 dprintk("<-- %s status=%d\n", __func__
, ret
);
6661 static int nfs4_proc_sequence(struct nfs_client
*clp
, struct rpc_cred
*cred
)
6663 struct rpc_task
*task
;
6666 task
= _nfs41_proc_sequence(clp
, cred
, true);
6668 ret
= PTR_ERR(task
);
6671 ret
= rpc_wait_for_completion_task(task
);
6673 struct nfs4_sequence_res
*res
= task
->tk_msg
.rpc_resp
;
6675 if (task
->tk_status
== 0)
6676 nfs41_handle_sequence_flag_errors(clp
, res
->sr_status_flags
);
6677 ret
= task
->tk_status
;
6681 dprintk("<-- %s status=%d\n", __func__
, ret
);
6685 struct nfs4_reclaim_complete_data
{
6686 struct nfs_client
*clp
;
6687 struct nfs41_reclaim_complete_args arg
;
6688 struct nfs41_reclaim_complete_res res
;
6691 static void nfs4_reclaim_complete_prepare(struct rpc_task
*task
, void *data
)
6693 struct nfs4_reclaim_complete_data
*calldata
= data
;
6695 nfs41_setup_sequence(calldata
->clp
->cl_session
,
6696 &calldata
->arg
.seq_args
,
6697 &calldata
->res
.seq_res
,
6701 static int nfs41_reclaim_complete_handle_errors(struct rpc_task
*task
, struct nfs_client
*clp
)
6703 switch(task
->tk_status
) {
6705 case -NFS4ERR_COMPLETE_ALREADY
:
6706 case -NFS4ERR_WRONG_CRED
: /* What to do here? */
6708 case -NFS4ERR_DELAY
:
6709 rpc_delay(task
, NFS4_POLL_RETRY_MAX
);
6711 case -NFS4ERR_RETRY_UNCACHED_REP
:
6714 nfs4_schedule_lease_recovery(clp
);
6719 static void nfs4_reclaim_complete_done(struct rpc_task
*task
, void *data
)
6721 struct nfs4_reclaim_complete_data
*calldata
= data
;
6722 struct nfs_client
*clp
= calldata
->clp
;
6723 struct nfs4_sequence_res
*res
= &calldata
->res
.seq_res
;
6725 dprintk("--> %s\n", __func__
);
6726 if (!nfs41_sequence_done(task
, res
))
6729 trace_nfs4_reclaim_complete(clp
, task
->tk_status
);
6730 if (nfs41_reclaim_complete_handle_errors(task
, clp
) == -EAGAIN
) {
6731 rpc_restart_call_prepare(task
);
6734 dprintk("<-- %s\n", __func__
);
6737 static void nfs4_free_reclaim_complete_data(void *data
)
6739 struct nfs4_reclaim_complete_data
*calldata
= data
;
6744 static const struct rpc_call_ops nfs4_reclaim_complete_call_ops
= {
6745 .rpc_call_prepare
= nfs4_reclaim_complete_prepare
,
6746 .rpc_call_done
= nfs4_reclaim_complete_done
,
6747 .rpc_release
= nfs4_free_reclaim_complete_data
,
6751 * Issue a global reclaim complete.
6753 static int nfs41_proc_reclaim_complete(struct nfs_client
*clp
,
6754 struct rpc_cred
*cred
)
6756 struct nfs4_reclaim_complete_data
*calldata
;
6757 struct rpc_task
*task
;
6758 struct rpc_message msg
= {
6759 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RECLAIM_COMPLETE
],
6762 struct rpc_task_setup task_setup_data
= {
6763 .rpc_client
= clp
->cl_rpcclient
,
6764 .rpc_message
= &msg
,
6765 .callback_ops
= &nfs4_reclaim_complete_call_ops
,
6766 .flags
= RPC_TASK_ASYNC
,
6768 int status
= -ENOMEM
;
6770 dprintk("--> %s\n", __func__
);
6771 calldata
= kzalloc(sizeof(*calldata
), GFP_NOFS
);
6772 if (calldata
== NULL
)
6774 calldata
->clp
= clp
;
6775 calldata
->arg
.one_fs
= 0;
6777 nfs4_init_sequence(&calldata
->arg
.seq_args
, &calldata
->res
.seq_res
, 0);
6778 nfs4_set_sequence_privileged(&calldata
->arg
.seq_args
);
6779 msg
.rpc_argp
= &calldata
->arg
;
6780 msg
.rpc_resp
= &calldata
->res
;
6781 task_setup_data
.callback_data
= calldata
;
6782 task
= rpc_run_task(&task_setup_data
);
6784 status
= PTR_ERR(task
);
6787 status
= nfs4_wait_for_completion_rpc_task(task
);
6789 status
= task
->tk_status
;
6793 dprintk("<-- %s status=%d\n", __func__
, status
);
6798 nfs4_layoutget_prepare(struct rpc_task
*task
, void *calldata
)
6800 struct nfs4_layoutget
*lgp
= calldata
;
6801 struct nfs_server
*server
= NFS_SERVER(lgp
->args
.inode
);
6802 struct nfs4_session
*session
= nfs4_get_session(server
);
6804 dprintk("--> %s\n", __func__
);
6805 /* Note the is a race here, where a CB_LAYOUTRECALL can come in
6806 * right now covering the LAYOUTGET we are about to send.
6807 * However, that is not so catastrophic, and there seems
6808 * to be no way to prevent it completely.
6810 if (nfs41_setup_sequence(session
, &lgp
->args
.seq_args
,
6811 &lgp
->res
.seq_res
, task
))
6813 if (pnfs_choose_layoutget_stateid(&lgp
->args
.stateid
,
6814 NFS_I(lgp
->args
.inode
)->layout
,
6815 lgp
->args
.ctx
->state
)) {
6816 rpc_exit(task
, NFS4_OK
);
6820 static void nfs4_layoutget_done(struct rpc_task
*task
, void *calldata
)
6822 struct nfs4_layoutget
*lgp
= calldata
;
6823 struct inode
*inode
= lgp
->args
.inode
;
6824 struct nfs_server
*server
= NFS_SERVER(inode
);
6825 struct pnfs_layout_hdr
*lo
;
6826 struct nfs4_state
*state
= NULL
;
6827 unsigned long timeo
, giveup
;
6829 dprintk("--> %s\n", __func__
);
6831 if (!nfs41_sequence_done(task
, &lgp
->res
.seq_res
))
6834 switch (task
->tk_status
) {
6837 case -NFS4ERR_LAYOUTTRYLATER
:
6838 case -NFS4ERR_RECALLCONFLICT
:
6839 timeo
= rpc_get_timeout(task
->tk_client
);
6840 giveup
= lgp
->args
.timestamp
+ timeo
;
6841 if (time_after(giveup
, jiffies
))
6842 task
->tk_status
= -NFS4ERR_DELAY
;
6844 case -NFS4ERR_EXPIRED
:
6845 case -NFS4ERR_BAD_STATEID
:
6846 spin_lock(&inode
->i_lock
);
6847 lo
= NFS_I(inode
)->layout
;
6848 if (!lo
|| list_empty(&lo
->plh_segs
)) {
6849 spin_unlock(&inode
->i_lock
);
6850 /* If the open stateid was bad, then recover it. */
6851 state
= lgp
->args
.ctx
->state
;
6855 pnfs_mark_matching_lsegs_invalid(lo
, &head
, NULL
);
6856 spin_unlock(&inode
->i_lock
);
6857 /* Mark the bad layout state as invalid, then
6858 * retry using the open stateid. */
6859 pnfs_free_lseg_list(&head
);
6862 if (nfs4_async_handle_error(task
, server
, state
) == -EAGAIN
)
6863 rpc_restart_call_prepare(task
);
6865 dprintk("<-- %s\n", __func__
);
6868 static size_t max_response_pages(struct nfs_server
*server
)
6870 u32 max_resp_sz
= server
->nfs_client
->cl_session
->fc_attrs
.max_resp_sz
;
6871 return nfs_page_array_len(0, max_resp_sz
);
6874 static void nfs4_free_pages(struct page
**pages
, size_t size
)
6881 for (i
= 0; i
< size
; i
++) {
6884 __free_page(pages
[i
]);
6889 static struct page
**nfs4_alloc_pages(size_t size
, gfp_t gfp_flags
)
6891 struct page
**pages
;
6894 pages
= kcalloc(size
, sizeof(struct page
*), gfp_flags
);
6896 dprintk("%s: can't alloc array of %zu pages\n", __func__
, size
);
6900 for (i
= 0; i
< size
; i
++) {
6901 pages
[i
] = alloc_page(gfp_flags
);
6903 dprintk("%s: failed to allocate page\n", __func__
);
6904 nfs4_free_pages(pages
, size
);
6912 static void nfs4_layoutget_release(void *calldata
)
6914 struct nfs4_layoutget
*lgp
= calldata
;
6915 struct inode
*inode
= lgp
->args
.inode
;
6916 struct nfs_server
*server
= NFS_SERVER(inode
);
6917 size_t max_pages
= max_response_pages(server
);
6919 dprintk("--> %s\n", __func__
);
6920 nfs4_free_pages(lgp
->args
.layout
.pages
, max_pages
);
6921 pnfs_put_layout_hdr(NFS_I(inode
)->layout
);
6922 put_nfs_open_context(lgp
->args
.ctx
);
6924 dprintk("<-- %s\n", __func__
);
6927 static const struct rpc_call_ops nfs4_layoutget_call_ops
= {
6928 .rpc_call_prepare
= nfs4_layoutget_prepare
,
6929 .rpc_call_done
= nfs4_layoutget_done
,
6930 .rpc_release
= nfs4_layoutget_release
,
6933 struct pnfs_layout_segment
*
6934 nfs4_proc_layoutget(struct nfs4_layoutget
*lgp
, gfp_t gfp_flags
)
6936 struct inode
*inode
= lgp
->args
.inode
;
6937 struct nfs_server
*server
= NFS_SERVER(inode
);
6938 size_t max_pages
= max_response_pages(server
);
6939 struct rpc_task
*task
;
6940 struct rpc_message msg
= {
6941 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LAYOUTGET
],
6942 .rpc_argp
= &lgp
->args
,
6943 .rpc_resp
= &lgp
->res
,
6944 .rpc_cred
= lgp
->cred
,
6946 struct rpc_task_setup task_setup_data
= {
6947 .rpc_client
= server
->client
,
6948 .rpc_message
= &msg
,
6949 .callback_ops
= &nfs4_layoutget_call_ops
,
6950 .callback_data
= lgp
,
6951 .flags
= RPC_TASK_ASYNC
,
6953 struct pnfs_layout_segment
*lseg
= NULL
;
6956 dprintk("--> %s\n", __func__
);
6958 lgp
->args
.layout
.pages
= nfs4_alloc_pages(max_pages
, gfp_flags
);
6959 if (!lgp
->args
.layout
.pages
) {
6960 nfs4_layoutget_release(lgp
);
6961 return ERR_PTR(-ENOMEM
);
6963 lgp
->args
.layout
.pglen
= max_pages
* PAGE_SIZE
;
6964 lgp
->args
.timestamp
= jiffies
;
6966 lgp
->res
.layoutp
= &lgp
->args
.layout
;
6967 lgp
->res
.seq_res
.sr_slot
= NULL
;
6968 nfs4_init_sequence(&lgp
->args
.seq_args
, &lgp
->res
.seq_res
, 0);
6970 /* nfs4_layoutget_release calls pnfs_put_layout_hdr */
6971 pnfs_get_layout_hdr(NFS_I(inode
)->layout
);
6973 task
= rpc_run_task(&task_setup_data
);
6975 return ERR_CAST(task
);
6976 status
= nfs4_wait_for_completion_rpc_task(task
);
6978 status
= task
->tk_status
;
6979 trace_nfs4_layoutget(lgp
->args
.ctx
,
6983 /* if layoutp->len is 0, nfs4_layoutget_prepare called rpc_exit */
6984 if (status
== 0 && lgp
->res
.layoutp
->len
)
6985 lseg
= pnfs_layout_process(lgp
);
6987 dprintk("<-- %s status=%d\n", __func__
, status
);
6989 return ERR_PTR(status
);
6994 nfs4_layoutreturn_prepare(struct rpc_task
*task
, void *calldata
)
6996 struct nfs4_layoutreturn
*lrp
= calldata
;
6998 dprintk("--> %s\n", __func__
);
6999 nfs41_setup_sequence(lrp
->clp
->cl_session
,
7000 &lrp
->args
.seq_args
,
7005 static void nfs4_layoutreturn_done(struct rpc_task
*task
, void *calldata
)
7007 struct nfs4_layoutreturn
*lrp
= calldata
;
7008 struct nfs_server
*server
;
7010 dprintk("--> %s\n", __func__
);
7012 if (!nfs41_sequence_done(task
, &lrp
->res
.seq_res
))
7015 server
= NFS_SERVER(lrp
->args
.inode
);
7016 if (nfs4_async_handle_error(task
, server
, NULL
) == -EAGAIN
) {
7017 rpc_restart_call_prepare(task
);
7020 dprintk("<-- %s\n", __func__
);
7023 static void nfs4_layoutreturn_release(void *calldata
)
7025 struct nfs4_layoutreturn
*lrp
= calldata
;
7026 struct pnfs_layout_hdr
*lo
= lrp
->args
.layout
;
7028 dprintk("--> %s\n", __func__
);
7029 spin_lock(&lo
->plh_inode
->i_lock
);
7030 if (lrp
->res
.lrs_present
)
7031 pnfs_set_layout_stateid(lo
, &lrp
->res
.stateid
, true);
7032 lo
->plh_block_lgets
--;
7033 spin_unlock(&lo
->plh_inode
->i_lock
);
7034 pnfs_put_layout_hdr(lrp
->args
.layout
);
7036 dprintk("<-- %s\n", __func__
);
7039 static const struct rpc_call_ops nfs4_layoutreturn_call_ops
= {
7040 .rpc_call_prepare
= nfs4_layoutreturn_prepare
,
7041 .rpc_call_done
= nfs4_layoutreturn_done
,
7042 .rpc_release
= nfs4_layoutreturn_release
,
7045 int nfs4_proc_layoutreturn(struct nfs4_layoutreturn
*lrp
)
7047 struct rpc_task
*task
;
7048 struct rpc_message msg
= {
7049 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LAYOUTRETURN
],
7050 .rpc_argp
= &lrp
->args
,
7051 .rpc_resp
= &lrp
->res
,
7052 .rpc_cred
= lrp
->cred
,
7054 struct rpc_task_setup task_setup_data
= {
7055 .rpc_client
= NFS_SERVER(lrp
->args
.inode
)->client
,
7056 .rpc_message
= &msg
,
7057 .callback_ops
= &nfs4_layoutreturn_call_ops
,
7058 .callback_data
= lrp
,
7062 dprintk("--> %s\n", __func__
);
7063 nfs4_init_sequence(&lrp
->args
.seq_args
, &lrp
->res
.seq_res
, 1);
7064 task
= rpc_run_task(&task_setup_data
);
7066 return PTR_ERR(task
);
7067 status
= task
->tk_status
;
7068 trace_nfs4_layoutreturn(lrp
->args
.inode
, status
);
7069 dprintk("<-- %s status=%d\n", __func__
, status
);
7075 * Retrieve the list of Data Server devices from the MDS.
7077 static int _nfs4_getdevicelist(struct nfs_server
*server
,
7078 const struct nfs_fh
*fh
,
7079 struct pnfs_devicelist
*devlist
)
7081 struct nfs4_getdevicelist_args args
= {
7083 .layoutclass
= server
->pnfs_curr_ld
->id
,
7085 struct nfs4_getdevicelist_res res
= {
7088 struct rpc_message msg
= {
7089 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GETDEVICELIST
],
7095 dprintk("--> %s\n", __func__
);
7096 status
= nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
,
7098 dprintk("<-- %s status=%d\n", __func__
, status
);
7102 int nfs4_proc_getdevicelist(struct nfs_server
*server
,
7103 const struct nfs_fh
*fh
,
7104 struct pnfs_devicelist
*devlist
)
7106 struct nfs4_exception exception
= { };
7110 err
= nfs4_handle_exception(server
,
7111 _nfs4_getdevicelist(server
, fh
, devlist
),
7113 } while (exception
.retry
);
7115 dprintk("%s: err=%d, num_devs=%u\n", __func__
,
7116 err
, devlist
->num_devs
);
7120 EXPORT_SYMBOL_GPL(nfs4_proc_getdevicelist
);
7123 _nfs4_proc_getdeviceinfo(struct nfs_server
*server
,
7124 struct pnfs_device
*pdev
,
7125 struct rpc_cred
*cred
)
7127 struct nfs4_getdeviceinfo_args args
= {
7130 struct nfs4_getdeviceinfo_res res
= {
7133 struct rpc_message msg
= {
7134 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GETDEVICEINFO
],
7141 dprintk("--> %s\n", __func__
);
7142 status
= nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
7143 dprintk("<-- %s status=%d\n", __func__
, status
);
7148 int nfs4_proc_getdeviceinfo(struct nfs_server
*server
,
7149 struct pnfs_device
*pdev
,
7150 struct rpc_cred
*cred
)
7152 struct nfs4_exception exception
= { };
7156 err
= nfs4_handle_exception(server
,
7157 _nfs4_proc_getdeviceinfo(server
, pdev
, cred
),
7159 } while (exception
.retry
);
7162 EXPORT_SYMBOL_GPL(nfs4_proc_getdeviceinfo
);
7164 static void nfs4_layoutcommit_prepare(struct rpc_task
*task
, void *calldata
)
7166 struct nfs4_layoutcommit_data
*data
= calldata
;
7167 struct nfs_server
*server
= NFS_SERVER(data
->args
.inode
);
7168 struct nfs4_session
*session
= nfs4_get_session(server
);
7170 nfs41_setup_sequence(session
,
7171 &data
->args
.seq_args
,
7177 nfs4_layoutcommit_done(struct rpc_task
*task
, void *calldata
)
7179 struct nfs4_layoutcommit_data
*data
= calldata
;
7180 struct nfs_server
*server
= NFS_SERVER(data
->args
.inode
);
7182 if (!nfs41_sequence_done(task
, &data
->res
.seq_res
))
7185 switch (task
->tk_status
) { /* Just ignore these failures */
7186 case -NFS4ERR_DELEG_REVOKED
: /* layout was recalled */
7187 case -NFS4ERR_BADIOMODE
: /* no IOMODE_RW layout for range */
7188 case -NFS4ERR_BADLAYOUT
: /* no layout */
7189 case -NFS4ERR_GRACE
: /* loca_recalim always false */
7190 task
->tk_status
= 0;
7193 nfs_post_op_update_inode_force_wcc(data
->args
.inode
,
7197 if (nfs4_async_handle_error(task
, server
, NULL
) == -EAGAIN
) {
7198 rpc_restart_call_prepare(task
);
7204 static void nfs4_layoutcommit_release(void *calldata
)
7206 struct nfs4_layoutcommit_data
*data
= calldata
;
7208 pnfs_cleanup_layoutcommit(data
);
7209 put_rpccred(data
->cred
);
7213 static const struct rpc_call_ops nfs4_layoutcommit_ops
= {
7214 .rpc_call_prepare
= nfs4_layoutcommit_prepare
,
7215 .rpc_call_done
= nfs4_layoutcommit_done
,
7216 .rpc_release
= nfs4_layoutcommit_release
,
7220 nfs4_proc_layoutcommit(struct nfs4_layoutcommit_data
*data
, bool sync
)
7222 struct rpc_message msg
= {
7223 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LAYOUTCOMMIT
],
7224 .rpc_argp
= &data
->args
,
7225 .rpc_resp
= &data
->res
,
7226 .rpc_cred
= data
->cred
,
7228 struct rpc_task_setup task_setup_data
= {
7229 .task
= &data
->task
,
7230 .rpc_client
= NFS_CLIENT(data
->args
.inode
),
7231 .rpc_message
= &msg
,
7232 .callback_ops
= &nfs4_layoutcommit_ops
,
7233 .callback_data
= data
,
7234 .flags
= RPC_TASK_ASYNC
,
7236 struct rpc_task
*task
;
7239 dprintk("NFS: %4d initiating layoutcommit call. sync %d "
7240 "lbw: %llu inode %lu\n",
7241 data
->task
.tk_pid
, sync
,
7242 data
->args
.lastbytewritten
,
7243 data
->args
.inode
->i_ino
);
7245 nfs4_init_sequence(&data
->args
.seq_args
, &data
->res
.seq_res
, 1);
7246 task
= rpc_run_task(&task_setup_data
);
7248 return PTR_ERR(task
);
7251 status
= nfs4_wait_for_completion_rpc_task(task
);
7254 status
= task
->tk_status
;
7255 trace_nfs4_layoutcommit(data
->args
.inode
, status
);
7257 dprintk("%s: status %d\n", __func__
, status
);
7263 * Use the state managment nfs_client cl_rpcclient, which uses krb5i (if
7264 * possible) as per RFC3530bis and RFC5661 Security Considerations sections
7267 _nfs41_proc_secinfo_no_name(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
7268 struct nfs_fsinfo
*info
, struct nfs4_secinfo_flavors
*flavors
)
7270 struct nfs41_secinfo_no_name_args args
= {
7271 .style
= SECINFO_STYLE_CURRENT_FH
,
7273 struct nfs4_secinfo_res res
= {
7276 struct rpc_message msg
= {
7277 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SECINFO_NO_NAME
],
7281 return nfs4_call_sync(server
->nfs_client
->cl_rpcclient
, server
, &msg
,
7282 &args
.seq_args
, &res
.seq_res
, 0);
7286 nfs41_proc_secinfo_no_name(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
7287 struct nfs_fsinfo
*info
, struct nfs4_secinfo_flavors
*flavors
)
7289 struct nfs4_exception exception
= { };
7292 err
= _nfs41_proc_secinfo_no_name(server
, fhandle
, info
, flavors
);
7295 case -NFS4ERR_WRONGSEC
:
7296 case -NFS4ERR_NOTSUPP
:
7299 err
= nfs4_handle_exception(server
, err
, &exception
);
7301 } while (exception
.retry
);
7307 nfs41_find_root_sec(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
7308 struct nfs_fsinfo
*info
)
7312 rpc_authflavor_t flavor
;
7313 struct nfs4_secinfo_flavors
*flavors
;
7315 page
= alloc_page(GFP_KERNEL
);
7321 flavors
= page_address(page
);
7322 err
= nfs41_proc_secinfo_no_name(server
, fhandle
, info
, flavors
);
7325 * Fall back on "guess and check" method if
7326 * the server doesn't support SECINFO_NO_NAME
7328 if (err
== -NFS4ERR_WRONGSEC
|| err
== -NFS4ERR_NOTSUPP
) {
7329 err
= nfs4_find_root_sec(server
, fhandle
, info
);
7335 flavor
= nfs_find_best_sec(flavors
);
7337 err
= nfs4_lookup_root_sec(server
, fhandle
, info
, flavor
);
7347 static int _nfs41_test_stateid(struct nfs_server
*server
,
7348 nfs4_stateid
*stateid
,
7349 struct rpc_cred
*cred
)
7352 struct nfs41_test_stateid_args args
= {
7355 struct nfs41_test_stateid_res res
;
7356 struct rpc_message msg
= {
7357 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_TEST_STATEID
],
7363 dprintk("NFS call test_stateid %p\n", stateid
);
7364 nfs4_init_sequence(&args
.seq_args
, &res
.seq_res
, 0);
7365 nfs4_set_sequence_privileged(&args
.seq_args
);
7366 status
= nfs4_call_sync_sequence(server
->client
, server
, &msg
,
7367 &args
.seq_args
, &res
.seq_res
);
7368 if (status
!= NFS_OK
) {
7369 dprintk("NFS reply test_stateid: failed, %d\n", status
);
7372 dprintk("NFS reply test_stateid: succeeded, %d\n", -res
.status
);
7377 * nfs41_test_stateid - perform a TEST_STATEID operation
7379 * @server: server / transport on which to perform the operation
7380 * @stateid: state ID to test
7383 * Returns NFS_OK if the server recognizes that "stateid" is valid.
7384 * Otherwise a negative NFS4ERR value is returned if the operation
7385 * failed or the state ID is not currently valid.
7387 static int nfs41_test_stateid(struct nfs_server
*server
,
7388 nfs4_stateid
*stateid
,
7389 struct rpc_cred
*cred
)
7391 struct nfs4_exception exception
= { };
7394 err
= _nfs41_test_stateid(server
, stateid
, cred
);
7395 if (err
!= -NFS4ERR_DELAY
)
7397 nfs4_handle_exception(server
, err
, &exception
);
7398 } while (exception
.retry
);
7402 struct nfs_free_stateid_data
{
7403 struct nfs_server
*server
;
7404 struct nfs41_free_stateid_args args
;
7405 struct nfs41_free_stateid_res res
;
7408 static void nfs41_free_stateid_prepare(struct rpc_task
*task
, void *calldata
)
7410 struct nfs_free_stateid_data
*data
= calldata
;
7411 nfs41_setup_sequence(nfs4_get_session(data
->server
),
7412 &data
->args
.seq_args
,
7417 static void nfs41_free_stateid_done(struct rpc_task
*task
, void *calldata
)
7419 struct nfs_free_stateid_data
*data
= calldata
;
7421 nfs41_sequence_done(task
, &data
->res
.seq_res
);
7423 switch (task
->tk_status
) {
7424 case -NFS4ERR_DELAY
:
7425 if (nfs4_async_handle_error(task
, data
->server
, NULL
) == -EAGAIN
)
7426 rpc_restart_call_prepare(task
);
7430 static void nfs41_free_stateid_release(void *calldata
)
7435 static const struct rpc_call_ops nfs41_free_stateid_ops
= {
7436 .rpc_call_prepare
= nfs41_free_stateid_prepare
,
7437 .rpc_call_done
= nfs41_free_stateid_done
,
7438 .rpc_release
= nfs41_free_stateid_release
,
7441 static struct rpc_task
*_nfs41_free_stateid(struct nfs_server
*server
,
7442 nfs4_stateid
*stateid
,
7443 struct rpc_cred
*cred
,
7446 struct rpc_message msg
= {
7447 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_FREE_STATEID
],
7450 struct rpc_task_setup task_setup
= {
7451 .rpc_client
= server
->client
,
7452 .rpc_message
= &msg
,
7453 .callback_ops
= &nfs41_free_stateid_ops
,
7454 .flags
= RPC_TASK_ASYNC
,
7456 struct nfs_free_stateid_data
*data
;
7458 dprintk("NFS call free_stateid %p\n", stateid
);
7459 data
= kmalloc(sizeof(*data
), GFP_NOFS
);
7461 return ERR_PTR(-ENOMEM
);
7462 data
->server
= server
;
7463 nfs4_stateid_copy(&data
->args
.stateid
, stateid
);
7465 task_setup
.callback_data
= data
;
7467 msg
.rpc_argp
= &data
->args
;
7468 msg
.rpc_resp
= &data
->res
;
7469 nfs4_init_sequence(&data
->args
.seq_args
, &data
->res
.seq_res
, 0);
7471 nfs4_set_sequence_privileged(&data
->args
.seq_args
);
7473 return rpc_run_task(&task_setup
);
7477 * nfs41_free_stateid - perform a FREE_STATEID operation
7479 * @server: server / transport on which to perform the operation
7480 * @stateid: state ID to release
7483 * Returns NFS_OK if the server freed "stateid". Otherwise a
7484 * negative NFS4ERR value is returned.
7486 static int nfs41_free_stateid(struct nfs_server
*server
,
7487 nfs4_stateid
*stateid
,
7488 struct rpc_cred
*cred
)
7490 struct rpc_task
*task
;
7493 task
= _nfs41_free_stateid(server
, stateid
, cred
, true);
7495 return PTR_ERR(task
);
7496 ret
= rpc_wait_for_completion_task(task
);
7498 ret
= task
->tk_status
;
7503 static int nfs41_free_lock_state(struct nfs_server
*server
, struct nfs4_lock_state
*lsp
)
7505 struct rpc_task
*task
;
7506 struct rpc_cred
*cred
= lsp
->ls_state
->owner
->so_cred
;
7508 task
= _nfs41_free_stateid(server
, &lsp
->ls_stateid
, cred
, false);
7509 nfs4_free_lock_state(server
, lsp
);
7511 return PTR_ERR(task
);
7516 static bool nfs41_match_stateid(const nfs4_stateid
*s1
,
7517 const nfs4_stateid
*s2
)
7519 if (memcmp(s1
->other
, s2
->other
, sizeof(s1
->other
)) != 0)
7522 if (s1
->seqid
== s2
->seqid
)
7524 if (s1
->seqid
== 0 || s2
->seqid
== 0)
7530 #endif /* CONFIG_NFS_V4_1 */
7532 static bool nfs4_match_stateid(const nfs4_stateid
*s1
,
7533 const nfs4_stateid
*s2
)
7535 return nfs4_stateid_match(s1
, s2
);
7539 static const struct nfs4_state_recovery_ops nfs40_reboot_recovery_ops
= {
7540 .owner_flag_bit
= NFS_OWNER_RECLAIM_REBOOT
,
7541 .state_flag_bit
= NFS_STATE_RECLAIM_REBOOT
,
7542 .recover_open
= nfs4_open_reclaim
,
7543 .recover_lock
= nfs4_lock_reclaim
,
7544 .establish_clid
= nfs4_init_clientid
,
7545 .detect_trunking
= nfs40_discover_server_trunking
,
7548 #if defined(CONFIG_NFS_V4_1)
7549 static const struct nfs4_state_recovery_ops nfs41_reboot_recovery_ops
= {
7550 .owner_flag_bit
= NFS_OWNER_RECLAIM_REBOOT
,
7551 .state_flag_bit
= NFS_STATE_RECLAIM_REBOOT
,
7552 .recover_open
= nfs4_open_reclaim
,
7553 .recover_lock
= nfs4_lock_reclaim
,
7554 .establish_clid
= nfs41_init_clientid
,
7555 .reclaim_complete
= nfs41_proc_reclaim_complete
,
7556 .detect_trunking
= nfs41_discover_server_trunking
,
7558 #endif /* CONFIG_NFS_V4_1 */
7560 static const struct nfs4_state_recovery_ops nfs40_nograce_recovery_ops
= {
7561 .owner_flag_bit
= NFS_OWNER_RECLAIM_NOGRACE
,
7562 .state_flag_bit
= NFS_STATE_RECLAIM_NOGRACE
,
7563 .recover_open
= nfs4_open_expired
,
7564 .recover_lock
= nfs4_lock_expired
,
7565 .establish_clid
= nfs4_init_clientid
,
7568 #if defined(CONFIG_NFS_V4_1)
7569 static const struct nfs4_state_recovery_ops nfs41_nograce_recovery_ops
= {
7570 .owner_flag_bit
= NFS_OWNER_RECLAIM_NOGRACE
,
7571 .state_flag_bit
= NFS_STATE_RECLAIM_NOGRACE
,
7572 .recover_open
= nfs41_open_expired
,
7573 .recover_lock
= nfs41_lock_expired
,
7574 .establish_clid
= nfs41_init_clientid
,
7576 #endif /* CONFIG_NFS_V4_1 */
7578 static const struct nfs4_state_maintenance_ops nfs40_state_renewal_ops
= {
7579 .sched_state_renewal
= nfs4_proc_async_renew
,
7580 .get_state_renewal_cred_locked
= nfs4_get_renew_cred_locked
,
7581 .renew_lease
= nfs4_proc_renew
,
7584 #if defined(CONFIG_NFS_V4_1)
7585 static const struct nfs4_state_maintenance_ops nfs41_state_renewal_ops
= {
7586 .sched_state_renewal
= nfs41_proc_async_sequence
,
7587 .get_state_renewal_cred_locked
= nfs4_get_machine_cred_locked
,
7588 .renew_lease
= nfs4_proc_sequence
,
7592 static const struct nfs4_minor_version_ops nfs_v4_0_minor_ops
= {
7594 .init_caps
= NFS_CAP_READDIRPLUS
7595 | NFS_CAP_ATOMIC_OPEN
7596 | NFS_CAP_CHANGE_ATTR
7597 | NFS_CAP_POSIX_LOCK
,
7598 .init_client
= nfs40_init_client
,
7599 .shutdown_client
= nfs40_shutdown_client
,
7600 .match_stateid
= nfs4_match_stateid
,
7601 .find_root_sec
= nfs4_find_root_sec
,
7602 .free_lock_state
= nfs4_release_lockowner
,
7603 .call_sync_ops
= &nfs40_call_sync_ops
,
7604 .reboot_recovery_ops
= &nfs40_reboot_recovery_ops
,
7605 .nograce_recovery_ops
= &nfs40_nograce_recovery_ops
,
7606 .state_renewal_ops
= &nfs40_state_renewal_ops
,
7609 #if defined(CONFIG_NFS_V4_1)
7610 static const struct nfs4_minor_version_ops nfs_v4_1_minor_ops
= {
7612 .init_caps
= NFS_CAP_READDIRPLUS
7613 | NFS_CAP_ATOMIC_OPEN
7614 | NFS_CAP_CHANGE_ATTR
7615 | NFS_CAP_POSIX_LOCK
7616 | NFS_CAP_STATEID_NFSV41
7617 | NFS_CAP_ATOMIC_OPEN_V1
,
7618 .init_client
= nfs41_init_client
,
7619 .shutdown_client
= nfs41_shutdown_client
,
7620 .match_stateid
= nfs41_match_stateid
,
7621 .find_root_sec
= nfs41_find_root_sec
,
7622 .free_lock_state
= nfs41_free_lock_state
,
7623 .call_sync_ops
= &nfs41_call_sync_ops
,
7624 .reboot_recovery_ops
= &nfs41_reboot_recovery_ops
,
7625 .nograce_recovery_ops
= &nfs41_nograce_recovery_ops
,
7626 .state_renewal_ops
= &nfs41_state_renewal_ops
,
7630 #if defined(CONFIG_NFS_V4_2)
7631 static const struct nfs4_minor_version_ops nfs_v4_2_minor_ops
= {
7633 .init_caps
= NFS_CAP_READDIRPLUS
7634 | NFS_CAP_ATOMIC_OPEN
7635 | NFS_CAP_CHANGE_ATTR
7636 | NFS_CAP_POSIX_LOCK
7637 | NFS_CAP_STATEID_NFSV41
7638 | NFS_CAP_ATOMIC_OPEN_V1
,
7639 .init_client
= nfs41_init_client
,
7640 .shutdown_client
= nfs41_shutdown_client
,
7641 .match_stateid
= nfs41_match_stateid
,
7642 .find_root_sec
= nfs41_find_root_sec
,
7643 .free_lock_state
= nfs41_free_lock_state
,
7644 .call_sync_ops
= &nfs41_call_sync_ops
,
7645 .reboot_recovery_ops
= &nfs41_reboot_recovery_ops
,
7646 .nograce_recovery_ops
= &nfs41_nograce_recovery_ops
,
7647 .state_renewal_ops
= &nfs41_state_renewal_ops
,
7651 const struct nfs4_minor_version_ops
*nfs_v4_minor_ops
[] = {
7652 [0] = &nfs_v4_0_minor_ops
,
7653 #if defined(CONFIG_NFS_V4_1)
7654 [1] = &nfs_v4_1_minor_ops
,
7656 #if defined(CONFIG_NFS_V4_2)
7657 [2] = &nfs_v4_2_minor_ops
,
7661 static const struct inode_operations nfs4_dir_inode_operations
= {
7662 .create
= nfs_create
,
7663 .lookup
= nfs_lookup
,
7664 .atomic_open
= nfs_atomic_open
,
7666 .unlink
= nfs_unlink
,
7667 .symlink
= nfs_symlink
,
7671 .rename
= nfs_rename
,
7672 .permission
= nfs_permission
,
7673 .getattr
= nfs_getattr
,
7674 .setattr
= nfs_setattr
,
7675 .getxattr
= generic_getxattr
,
7676 .setxattr
= generic_setxattr
,
7677 .listxattr
= generic_listxattr
,
7678 .removexattr
= generic_removexattr
,
7681 static const struct inode_operations nfs4_file_inode_operations
= {
7682 .permission
= nfs_permission
,
7683 .getattr
= nfs_getattr
,
7684 .setattr
= nfs_setattr
,
7685 .getxattr
= generic_getxattr
,
7686 .setxattr
= generic_setxattr
,
7687 .listxattr
= generic_listxattr
,
7688 .removexattr
= generic_removexattr
,
7691 const struct nfs_rpc_ops nfs_v4_clientops
= {
7692 .version
= 4, /* protocol version */
7693 .dentry_ops
= &nfs4_dentry_operations
,
7694 .dir_inode_ops
= &nfs4_dir_inode_operations
,
7695 .file_inode_ops
= &nfs4_file_inode_operations
,
7696 .file_ops
= &nfs4_file_operations
,
7697 .getroot
= nfs4_proc_get_root
,
7698 .submount
= nfs4_submount
,
7699 .try_mount
= nfs4_try_mount
,
7700 .getattr
= nfs4_proc_getattr
,
7701 .setattr
= nfs4_proc_setattr
,
7702 .lookup
= nfs4_proc_lookup
,
7703 .access
= nfs4_proc_access
,
7704 .readlink
= nfs4_proc_readlink
,
7705 .create
= nfs4_proc_create
,
7706 .remove
= nfs4_proc_remove
,
7707 .unlink_setup
= nfs4_proc_unlink_setup
,
7708 .unlink_rpc_prepare
= nfs4_proc_unlink_rpc_prepare
,
7709 .unlink_done
= nfs4_proc_unlink_done
,
7710 .rename
= nfs4_proc_rename
,
7711 .rename_setup
= nfs4_proc_rename_setup
,
7712 .rename_rpc_prepare
= nfs4_proc_rename_rpc_prepare
,
7713 .rename_done
= nfs4_proc_rename_done
,
7714 .link
= nfs4_proc_link
,
7715 .symlink
= nfs4_proc_symlink
,
7716 .mkdir
= nfs4_proc_mkdir
,
7717 .rmdir
= nfs4_proc_remove
,
7718 .readdir
= nfs4_proc_readdir
,
7719 .mknod
= nfs4_proc_mknod
,
7720 .statfs
= nfs4_proc_statfs
,
7721 .fsinfo
= nfs4_proc_fsinfo
,
7722 .pathconf
= nfs4_proc_pathconf
,
7723 .set_capabilities
= nfs4_server_capabilities
,
7724 .decode_dirent
= nfs4_decode_dirent
,
7725 .read_setup
= nfs4_proc_read_setup
,
7726 .read_pageio_init
= pnfs_pageio_init_read
,
7727 .read_rpc_prepare
= nfs4_proc_read_rpc_prepare
,
7728 .read_done
= nfs4_read_done
,
7729 .write_setup
= nfs4_proc_write_setup
,
7730 .write_pageio_init
= pnfs_pageio_init_write
,
7731 .write_rpc_prepare
= nfs4_proc_write_rpc_prepare
,
7732 .write_done
= nfs4_write_done
,
7733 .commit_setup
= nfs4_proc_commit_setup
,
7734 .commit_rpc_prepare
= nfs4_proc_commit_rpc_prepare
,
7735 .commit_done
= nfs4_commit_done
,
7736 .lock
= nfs4_proc_lock
,
7737 .clear_acl_cache
= nfs4_zap_acl_attr
,
7738 .close_context
= nfs4_close_context
,
7739 .open_context
= nfs4_atomic_open
,
7740 .have_delegation
= nfs4_have_delegation
,
7741 .return_delegation
= nfs4_inode_return_delegation
,
7742 .alloc_client
= nfs4_alloc_client
,
7743 .init_client
= nfs4_init_client
,
7744 .free_client
= nfs4_free_client
,
7745 .create_server
= nfs4_create_server
,
7746 .clone_server
= nfs_clone_server
,
7749 static const struct xattr_handler nfs4_xattr_nfs4_acl_handler
= {
7750 .prefix
= XATTR_NAME_NFSV4_ACL
,
7751 .list
= nfs4_xattr_list_nfs4_acl
,
7752 .get
= nfs4_xattr_get_nfs4_acl
,
7753 .set
= nfs4_xattr_set_nfs4_acl
,
7756 const struct xattr_handler
*nfs4_xattr_handlers
[] = {
7757 &nfs4_xattr_nfs4_acl_handler
,
7758 #ifdef CONFIG_NFS_V4_SECURITY_LABEL
7759 &nfs4_xattr_nfs4_label_handler
,