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_prepare(struct rpc_task
*task
, void *calldata
)
1615 struct nfs4_opendata
*data
= calldata
;
1617 nfs40_setup_sequence(data
->o_arg
.server
, &data
->o_arg
.seq_args
,
1618 &data
->o_res
.seq_res
, task
);
1621 static void nfs4_open_confirm_done(struct rpc_task
*task
, void *calldata
)
1623 struct nfs4_opendata
*data
= calldata
;
1625 nfs40_sequence_done(task
, &data
->o_res
.seq_res
);
1627 data
->rpc_status
= task
->tk_status
;
1628 if (data
->rpc_status
== 0) {
1629 nfs4_stateid_copy(&data
->o_res
.stateid
, &data
->c_res
.stateid
);
1630 nfs_confirm_seqid(&data
->owner
->so_seqid
, 0);
1631 renew_lease(data
->o_res
.server
, data
->timestamp
);
1636 static void nfs4_open_confirm_release(void *calldata
)
1638 struct nfs4_opendata
*data
= calldata
;
1639 struct nfs4_state
*state
= NULL
;
1641 /* If this request hasn't been cancelled, do nothing */
1642 if (data
->cancelled
== 0)
1644 /* In case of error, no cleanup! */
1645 if (!data
->rpc_done
)
1647 state
= nfs4_opendata_to_nfs4_state(data
);
1649 nfs4_close_state(state
, data
->o_arg
.fmode
);
1651 nfs4_opendata_put(data
);
1654 static const struct rpc_call_ops nfs4_open_confirm_ops
= {
1655 .rpc_call_prepare
= nfs4_open_confirm_prepare
,
1656 .rpc_call_done
= nfs4_open_confirm_done
,
1657 .rpc_release
= nfs4_open_confirm_release
,
1661 * Note: On error, nfs4_proc_open_confirm will free the struct nfs4_opendata
1663 static int _nfs4_proc_open_confirm(struct nfs4_opendata
*data
)
1665 struct nfs_server
*server
= NFS_SERVER(data
->dir
->d_inode
);
1666 struct rpc_task
*task
;
1667 struct rpc_message msg
= {
1668 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_OPEN_CONFIRM
],
1669 .rpc_argp
= &data
->c_arg
,
1670 .rpc_resp
= &data
->c_res
,
1671 .rpc_cred
= data
->owner
->so_cred
,
1673 struct rpc_task_setup task_setup_data
= {
1674 .rpc_client
= server
->client
,
1675 .rpc_message
= &msg
,
1676 .callback_ops
= &nfs4_open_confirm_ops
,
1677 .callback_data
= data
,
1678 .workqueue
= nfsiod_workqueue
,
1679 .flags
= RPC_TASK_ASYNC
,
1683 nfs4_init_sequence(&data
->o_arg
.seq_args
, &data
->o_res
.seq_res
, 1);
1684 kref_get(&data
->kref
);
1686 data
->rpc_status
= 0;
1687 data
->timestamp
= jiffies
;
1688 task
= rpc_run_task(&task_setup_data
);
1690 return PTR_ERR(task
);
1691 status
= nfs4_wait_for_completion_rpc_task(task
);
1693 data
->cancelled
= 1;
1696 status
= data
->rpc_status
;
1701 static void nfs4_open_prepare(struct rpc_task
*task
, void *calldata
)
1703 struct nfs4_opendata
*data
= calldata
;
1704 struct nfs4_state_owner
*sp
= data
->owner
;
1705 struct nfs_client
*clp
= sp
->so_server
->nfs_client
;
1707 if (nfs_wait_on_sequence(data
->o_arg
.seqid
, task
) != 0)
1710 * Check if we still need to send an OPEN call, or if we can use
1711 * a delegation instead.
1713 if (data
->state
!= NULL
) {
1714 struct nfs_delegation
*delegation
;
1716 if (can_open_cached(data
->state
, data
->o_arg
.fmode
, data
->o_arg
.open_flags
))
1719 delegation
= rcu_dereference(NFS_I(data
->state
->inode
)->delegation
);
1720 if (data
->o_arg
.claim
!= NFS4_OPEN_CLAIM_DELEGATE_CUR
&&
1721 data
->o_arg
.claim
!= NFS4_OPEN_CLAIM_DELEG_CUR_FH
&&
1722 can_open_delegated(delegation
, data
->o_arg
.fmode
))
1723 goto unlock_no_action
;
1726 /* Update client id. */
1727 data
->o_arg
.clientid
= clp
->cl_clientid
;
1728 switch (data
->o_arg
.claim
) {
1729 case NFS4_OPEN_CLAIM_PREVIOUS
:
1730 case NFS4_OPEN_CLAIM_DELEG_CUR_FH
:
1731 case NFS4_OPEN_CLAIM_DELEG_PREV_FH
:
1732 data
->o_arg
.open_bitmap
= &nfs4_open_noattr_bitmap
[0];
1733 case NFS4_OPEN_CLAIM_FH
:
1734 task
->tk_msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_OPEN_NOATTR
];
1735 nfs_copy_fh(&data
->o_res
.fh
, data
->o_arg
.fh
);
1737 data
->timestamp
= jiffies
;
1738 if (nfs4_setup_sequence(data
->o_arg
.server
,
1739 &data
->o_arg
.seq_args
,
1740 &data
->o_res
.seq_res
,
1742 nfs_release_seqid(data
->o_arg
.seqid
);
1744 /* Set the create mode (note dependency on the session type) */
1745 data
->o_arg
.createmode
= NFS4_CREATE_UNCHECKED
;
1746 if (data
->o_arg
.open_flags
& O_EXCL
) {
1747 data
->o_arg
.createmode
= NFS4_CREATE_EXCLUSIVE
;
1748 if (nfs4_has_persistent_session(clp
))
1749 data
->o_arg
.createmode
= NFS4_CREATE_GUARDED
;
1750 else if (clp
->cl_mvops
->minor_version
> 0)
1751 data
->o_arg
.createmode
= NFS4_CREATE_EXCLUSIVE4_1
;
1757 task
->tk_action
= NULL
;
1759 nfs4_sequence_done(task
, &data
->o_res
.seq_res
);
1762 static void nfs4_open_done(struct rpc_task
*task
, void *calldata
)
1764 struct nfs4_opendata
*data
= calldata
;
1766 data
->rpc_status
= task
->tk_status
;
1768 if (!nfs4_sequence_done(task
, &data
->o_res
.seq_res
))
1771 if (task
->tk_status
== 0) {
1772 if (data
->o_res
.f_attr
->valid
& NFS_ATTR_FATTR_TYPE
) {
1773 switch (data
->o_res
.f_attr
->mode
& S_IFMT
) {
1777 data
->rpc_status
= -ELOOP
;
1780 data
->rpc_status
= -EISDIR
;
1783 data
->rpc_status
= -ENOTDIR
;
1786 renew_lease(data
->o_res
.server
, data
->timestamp
);
1787 if (!(data
->o_res
.rflags
& NFS4_OPEN_RESULT_CONFIRM
))
1788 nfs_confirm_seqid(&data
->owner
->so_seqid
, 0);
1793 static void nfs4_open_release(void *calldata
)
1795 struct nfs4_opendata
*data
= calldata
;
1796 struct nfs4_state
*state
= NULL
;
1798 /* If this request hasn't been cancelled, do nothing */
1799 if (data
->cancelled
== 0)
1801 /* In case of error, no cleanup! */
1802 if (data
->rpc_status
!= 0 || !data
->rpc_done
)
1804 /* In case we need an open_confirm, no cleanup! */
1805 if (data
->o_res
.rflags
& NFS4_OPEN_RESULT_CONFIRM
)
1807 state
= nfs4_opendata_to_nfs4_state(data
);
1809 nfs4_close_state(state
, data
->o_arg
.fmode
);
1811 nfs4_opendata_put(data
);
1814 static const struct rpc_call_ops nfs4_open_ops
= {
1815 .rpc_call_prepare
= nfs4_open_prepare
,
1816 .rpc_call_done
= nfs4_open_done
,
1817 .rpc_release
= nfs4_open_release
,
1820 static int nfs4_run_open_task(struct nfs4_opendata
*data
, int isrecover
)
1822 struct inode
*dir
= data
->dir
->d_inode
;
1823 struct nfs_server
*server
= NFS_SERVER(dir
);
1824 struct nfs_openargs
*o_arg
= &data
->o_arg
;
1825 struct nfs_openres
*o_res
= &data
->o_res
;
1826 struct rpc_task
*task
;
1827 struct rpc_message msg
= {
1828 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_OPEN
],
1831 .rpc_cred
= data
->owner
->so_cred
,
1833 struct rpc_task_setup task_setup_data
= {
1834 .rpc_client
= server
->client
,
1835 .rpc_message
= &msg
,
1836 .callback_ops
= &nfs4_open_ops
,
1837 .callback_data
= data
,
1838 .workqueue
= nfsiod_workqueue
,
1839 .flags
= RPC_TASK_ASYNC
,
1843 nfs4_init_sequence(&o_arg
->seq_args
, &o_res
->seq_res
, 1);
1844 kref_get(&data
->kref
);
1846 data
->rpc_status
= 0;
1847 data
->cancelled
= 0;
1848 data
->is_recover
= 0;
1850 nfs4_set_sequence_privileged(&o_arg
->seq_args
);
1851 data
->is_recover
= 1;
1853 task
= rpc_run_task(&task_setup_data
);
1855 return PTR_ERR(task
);
1856 status
= nfs4_wait_for_completion_rpc_task(task
);
1858 data
->cancelled
= 1;
1861 status
= data
->rpc_status
;
1867 static int _nfs4_recover_proc_open(struct nfs4_opendata
*data
)
1869 struct inode
*dir
= data
->dir
->d_inode
;
1870 struct nfs_openres
*o_res
= &data
->o_res
;
1873 status
= nfs4_run_open_task(data
, 1);
1874 if (status
!= 0 || !data
->rpc_done
)
1877 nfs_fattr_map_and_free_names(NFS_SERVER(dir
), &data
->f_attr
);
1879 if (o_res
->rflags
& NFS4_OPEN_RESULT_CONFIRM
) {
1880 status
= _nfs4_proc_open_confirm(data
);
1888 static int nfs4_opendata_access(struct rpc_cred
*cred
,
1889 struct nfs4_opendata
*opendata
,
1890 struct nfs4_state
*state
, fmode_t fmode
,
1893 struct nfs_access_entry cache
;
1896 /* access call failed or for some reason the server doesn't
1897 * support any access modes -- defer access call until later */
1898 if (opendata
->o_res
.access_supported
== 0)
1902 /* don't check MAY_WRITE - a newly created file may not have
1903 * write mode bits, but POSIX allows the creating process to write.
1904 * use openflags to check for exec, because fmode won't
1905 * always have FMODE_EXEC set when file open for exec. */
1906 if (openflags
& __FMODE_EXEC
) {
1907 /* ONLY check for exec rights */
1909 } else if (fmode
& FMODE_READ
)
1913 cache
.jiffies
= jiffies
;
1914 nfs_access_set_mask(&cache
, opendata
->o_res
.access_result
);
1915 nfs_access_add_cache(state
->inode
, &cache
);
1917 if ((mask
& ~cache
.mask
& (MAY_READ
| MAY_EXEC
)) == 0)
1920 /* even though OPEN succeeded, access is denied. Close the file */
1921 nfs4_close_state(state
, fmode
);
1926 * Note: On error, nfs4_proc_open will free the struct nfs4_opendata
1928 static int _nfs4_proc_open(struct nfs4_opendata
*data
)
1930 struct inode
*dir
= data
->dir
->d_inode
;
1931 struct nfs_server
*server
= NFS_SERVER(dir
);
1932 struct nfs_openargs
*o_arg
= &data
->o_arg
;
1933 struct nfs_openres
*o_res
= &data
->o_res
;
1936 status
= nfs4_run_open_task(data
, 0);
1937 if (!data
->rpc_done
)
1940 if (status
== -NFS4ERR_BADNAME
&&
1941 !(o_arg
->open_flags
& O_CREAT
))
1946 nfs_fattr_map_and_free_names(server
, &data
->f_attr
);
1948 if (o_arg
->open_flags
& O_CREAT
)
1949 update_changeattr(dir
, &o_res
->cinfo
);
1950 if ((o_res
->rflags
& NFS4_OPEN_RESULT_LOCKTYPE_POSIX
) == 0)
1951 server
->caps
&= ~NFS_CAP_POSIX_LOCK
;
1952 if(o_res
->rflags
& NFS4_OPEN_RESULT_CONFIRM
) {
1953 status
= _nfs4_proc_open_confirm(data
);
1957 if (!(o_res
->f_attr
->valid
& NFS_ATTR_FATTR
))
1958 _nfs4_proc_getattr(server
, &o_res
->fh
, o_res
->f_attr
, o_res
->f_label
);
1962 static int nfs4_recover_expired_lease(struct nfs_server
*server
)
1964 return nfs4_client_recover_expired_lease(server
->nfs_client
);
1969 * reclaim state on the server after a network partition.
1970 * Assumes caller holds the appropriate lock
1972 static int _nfs4_open_expired(struct nfs_open_context
*ctx
, struct nfs4_state
*state
)
1974 struct nfs4_opendata
*opendata
;
1977 opendata
= nfs4_open_recoverdata_alloc(ctx
, state
,
1978 NFS4_OPEN_CLAIM_FH
);
1979 if (IS_ERR(opendata
))
1980 return PTR_ERR(opendata
);
1981 ret
= nfs4_open_recover(opendata
, state
);
1983 d_drop(ctx
->dentry
);
1984 nfs4_opendata_put(opendata
);
1988 static int nfs4_do_open_expired(struct nfs_open_context
*ctx
, struct nfs4_state
*state
)
1990 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
1991 struct nfs4_exception exception
= { };
1995 err
= _nfs4_open_expired(ctx
, state
);
1996 trace_nfs4_open_expired(ctx
, 0, err
);
1997 if (nfs4_clear_cap_atomic_open_v1(server
, err
, &exception
))
2002 case -NFS4ERR_GRACE
:
2003 case -NFS4ERR_DELAY
:
2004 nfs4_handle_exception(server
, err
, &exception
);
2007 } while (exception
.retry
);
2012 static int nfs4_open_expired(struct nfs4_state_owner
*sp
, struct nfs4_state
*state
)
2014 struct nfs_open_context
*ctx
;
2017 ctx
= nfs4_state_find_open_context(state
);
2020 ret
= nfs4_do_open_expired(ctx
, state
);
2021 put_nfs_open_context(ctx
);
2025 #if defined(CONFIG_NFS_V4_1)
2026 static void nfs41_clear_delegation_stateid(struct nfs4_state
*state
)
2028 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
2029 nfs4_stateid
*stateid
= &state
->stateid
;
2030 struct nfs_delegation
*delegation
;
2031 struct rpc_cred
*cred
= NULL
;
2032 int status
= -NFS4ERR_BAD_STATEID
;
2034 /* If a state reset has been done, test_stateid is unneeded */
2035 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) == 0)
2038 /* Get the delegation credential for use by test/free_stateid */
2040 delegation
= rcu_dereference(NFS_I(state
->inode
)->delegation
);
2041 if (delegation
!= NULL
&&
2042 nfs4_stateid_match(&delegation
->stateid
, stateid
)) {
2043 cred
= get_rpccred(delegation
->cred
);
2045 status
= nfs41_test_stateid(server
, stateid
, cred
);
2046 trace_nfs4_test_delegation_stateid(state
, NULL
, status
);
2050 if (status
!= NFS_OK
) {
2051 /* Free the stateid unless the server explicitly
2052 * informs us the stateid is unrecognized. */
2053 if (status
!= -NFS4ERR_BAD_STATEID
)
2054 nfs41_free_stateid(server
, stateid
, cred
);
2055 nfs_remove_bad_delegation(state
->inode
);
2057 write_seqlock(&state
->seqlock
);
2058 nfs4_stateid_copy(&state
->stateid
, &state
->open_stateid
);
2059 write_sequnlock(&state
->seqlock
);
2060 clear_bit(NFS_DELEGATED_STATE
, &state
->flags
);
2068 * nfs41_check_open_stateid - possibly free an open stateid
2070 * @state: NFSv4 state for an inode
2072 * Returns NFS_OK if recovery for this stateid is now finished.
2073 * Otherwise a negative NFS4ERR value is returned.
2075 static int nfs41_check_open_stateid(struct nfs4_state
*state
)
2077 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
2078 nfs4_stateid
*stateid
= &state
->open_stateid
;
2079 struct rpc_cred
*cred
= state
->owner
->so_cred
;
2082 /* If a state reset has been done, test_stateid is unneeded */
2083 if ((test_bit(NFS_O_RDONLY_STATE
, &state
->flags
) == 0) &&
2084 (test_bit(NFS_O_WRONLY_STATE
, &state
->flags
) == 0) &&
2085 (test_bit(NFS_O_RDWR_STATE
, &state
->flags
) == 0))
2086 return -NFS4ERR_BAD_STATEID
;
2088 status
= nfs41_test_stateid(server
, stateid
, cred
);
2089 trace_nfs4_test_open_stateid(state
, NULL
, status
);
2090 if (status
!= NFS_OK
) {
2091 /* Free the stateid unless the server explicitly
2092 * informs us the stateid is unrecognized. */
2093 if (status
!= -NFS4ERR_BAD_STATEID
)
2094 nfs41_free_stateid(server
, stateid
, cred
);
2096 clear_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
2097 clear_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
2098 clear_bit(NFS_O_RDWR_STATE
, &state
->flags
);
2099 clear_bit(NFS_OPEN_STATE
, &state
->flags
);
2104 static int nfs41_open_expired(struct nfs4_state_owner
*sp
, struct nfs4_state
*state
)
2108 nfs41_clear_delegation_stateid(state
);
2109 status
= nfs41_check_open_stateid(state
);
2110 if (status
!= NFS_OK
)
2111 status
= nfs4_open_expired(sp
, state
);
2117 * on an EXCLUSIVE create, the server should send back a bitmask with FATTR4-*
2118 * fields corresponding to attributes that were used to store the verifier.
2119 * Make sure we clobber those fields in the later setattr call
2121 static inline void nfs4_exclusive_attrset(struct nfs4_opendata
*opendata
, struct iattr
*sattr
)
2123 if ((opendata
->o_res
.attrset
[1] & FATTR4_WORD1_TIME_ACCESS
) &&
2124 !(sattr
->ia_valid
& ATTR_ATIME_SET
))
2125 sattr
->ia_valid
|= ATTR_ATIME
;
2127 if ((opendata
->o_res
.attrset
[1] & FATTR4_WORD1_TIME_MODIFY
) &&
2128 !(sattr
->ia_valid
& ATTR_MTIME_SET
))
2129 sattr
->ia_valid
|= ATTR_MTIME
;
2132 static int _nfs4_open_and_get_state(struct nfs4_opendata
*opendata
,
2135 struct nfs_open_context
*ctx
)
2137 struct nfs4_state_owner
*sp
= opendata
->owner
;
2138 struct nfs_server
*server
= sp
->so_server
;
2139 struct dentry
*dentry
;
2140 struct nfs4_state
*state
;
2144 seq
= raw_seqcount_begin(&sp
->so_reclaim_seqcount
);
2146 ret
= _nfs4_proc_open(opendata
);
2150 state
= nfs4_opendata_to_nfs4_state(opendata
);
2151 ret
= PTR_ERR(state
);
2154 if (server
->caps
& NFS_CAP_POSIX_LOCK
)
2155 set_bit(NFS_STATE_POSIX_LOCKS
, &state
->flags
);
2157 dentry
= opendata
->dentry
;
2158 if (dentry
->d_inode
== NULL
) {
2159 /* FIXME: Is this d_drop() ever needed? */
2161 dentry
= d_add_unique(dentry
, igrab(state
->inode
));
2162 if (dentry
== NULL
) {
2163 dentry
= opendata
->dentry
;
2164 } else if (dentry
!= ctx
->dentry
) {
2166 ctx
->dentry
= dget(dentry
);
2168 nfs_set_verifier(dentry
,
2169 nfs_save_change_attribute(opendata
->dir
->d_inode
));
2172 ret
= nfs4_opendata_access(sp
->so_cred
, opendata
, state
, fmode
, flags
);
2177 if (dentry
->d_inode
== state
->inode
) {
2178 nfs_inode_attach_open_context(ctx
);
2179 if (read_seqcount_retry(&sp
->so_reclaim_seqcount
, seq
))
2180 nfs4_schedule_stateid_recovery(server
, state
);
2187 * Returns a referenced nfs4_state
2189 static int _nfs4_do_open(struct inode
*dir
,
2190 struct nfs_open_context
*ctx
,
2192 struct iattr
*sattr
,
2193 struct nfs4_label
*label
)
2195 struct nfs4_state_owner
*sp
;
2196 struct nfs4_state
*state
= NULL
;
2197 struct nfs_server
*server
= NFS_SERVER(dir
);
2198 struct nfs4_opendata
*opendata
;
2199 struct dentry
*dentry
= ctx
->dentry
;
2200 struct rpc_cred
*cred
= ctx
->cred
;
2201 struct nfs4_threshold
**ctx_th
= &ctx
->mdsthreshold
;
2202 fmode_t fmode
= ctx
->mode
& (FMODE_READ
|FMODE_WRITE
|FMODE_EXEC
);
2203 enum open_claim_type4 claim
= NFS4_OPEN_CLAIM_NULL
;
2204 struct nfs4_label
*olabel
= NULL
;
2207 /* Protect against reboot recovery conflicts */
2209 sp
= nfs4_get_state_owner(server
, cred
, GFP_KERNEL
);
2211 dprintk("nfs4_do_open: nfs4_get_state_owner failed!\n");
2214 status
= nfs4_recover_expired_lease(server
);
2216 goto err_put_state_owner
;
2217 if (dentry
->d_inode
!= NULL
)
2218 nfs4_return_incompatible_delegation(dentry
->d_inode
, fmode
);
2220 if (dentry
->d_inode
)
2221 claim
= NFS4_OPEN_CLAIM_FH
;
2222 opendata
= nfs4_opendata_alloc(dentry
, sp
, fmode
, flags
, sattr
,
2223 label
, claim
, GFP_KERNEL
);
2224 if (opendata
== NULL
)
2225 goto err_put_state_owner
;
2228 olabel
= nfs4_label_alloc(server
, GFP_KERNEL
);
2229 if (IS_ERR(olabel
)) {
2230 status
= PTR_ERR(olabel
);
2231 goto err_opendata_put
;
2235 if (ctx_th
&& server
->attr_bitmask
[2] & FATTR4_WORD2_MDSTHRESHOLD
) {
2236 opendata
->f_attr
.mdsthreshold
= pnfs_mdsthreshold_alloc();
2237 if (!opendata
->f_attr
.mdsthreshold
)
2238 goto err_free_label
;
2239 opendata
->o_arg
.open_bitmap
= &nfs4_pnfs_open_bitmap
[0];
2241 if (dentry
->d_inode
!= NULL
)
2242 opendata
->state
= nfs4_get_open_state(dentry
->d_inode
, sp
);
2244 status
= _nfs4_open_and_get_state(opendata
, fmode
, flags
, ctx
);
2246 goto err_free_label
;
2249 if ((opendata
->o_arg
.open_flags
& O_EXCL
) &&
2250 (opendata
->o_arg
.createmode
!= NFS4_CREATE_GUARDED
)) {
2251 nfs4_exclusive_attrset(opendata
, sattr
);
2253 nfs_fattr_init(opendata
->o_res
.f_attr
);
2254 status
= nfs4_do_setattr(state
->inode
, cred
,
2255 opendata
->o_res
.f_attr
, sattr
,
2256 state
, label
, olabel
);
2258 nfs_setattr_update_inode(state
->inode
, sattr
);
2259 nfs_post_op_update_inode(state
->inode
, opendata
->o_res
.f_attr
);
2260 nfs_setsecurity(state
->inode
, opendata
->o_res
.f_attr
, olabel
);
2264 if (pnfs_use_threshold(ctx_th
, opendata
->f_attr
.mdsthreshold
, server
))
2265 *ctx_th
= opendata
->f_attr
.mdsthreshold
;
2267 kfree(opendata
->f_attr
.mdsthreshold
);
2268 opendata
->f_attr
.mdsthreshold
= NULL
;
2270 nfs4_label_free(olabel
);
2272 nfs4_opendata_put(opendata
);
2273 nfs4_put_state_owner(sp
);
2276 nfs4_label_free(olabel
);
2278 kfree(opendata
->f_attr
.mdsthreshold
);
2279 nfs4_opendata_put(opendata
);
2280 err_put_state_owner
:
2281 nfs4_put_state_owner(sp
);
2287 static struct nfs4_state
*nfs4_do_open(struct inode
*dir
,
2288 struct nfs_open_context
*ctx
,
2290 struct iattr
*sattr
,
2291 struct nfs4_label
*label
)
2293 struct nfs_server
*server
= NFS_SERVER(dir
);
2294 struct nfs4_exception exception
= { };
2295 struct nfs4_state
*res
;
2299 status
= _nfs4_do_open(dir
, ctx
, flags
, sattr
, label
);
2301 trace_nfs4_open_file(ctx
, flags
, status
);
2304 /* NOTE: BAD_SEQID means the server and client disagree about the
2305 * book-keeping w.r.t. state-changing operations
2306 * (OPEN/CLOSE/LOCK/LOCKU...)
2307 * It is actually a sign of a bug on the client or on the server.
2309 * If we receive a BAD_SEQID error in the particular case of
2310 * doing an OPEN, we assume that nfs_increment_open_seqid() will
2311 * have unhashed the old state_owner for us, and that we can
2312 * therefore safely retry using a new one. We should still warn
2313 * the user though...
2315 if (status
== -NFS4ERR_BAD_SEQID
) {
2316 pr_warn_ratelimited("NFS: v4 server %s "
2317 " returned a bad sequence-id error!\n",
2318 NFS_SERVER(dir
)->nfs_client
->cl_hostname
);
2319 exception
.retry
= 1;
2323 * BAD_STATEID on OPEN means that the server cancelled our
2324 * state before it received the OPEN_CONFIRM.
2325 * Recover by retrying the request as per the discussion
2326 * on Page 181 of RFC3530.
2328 if (status
== -NFS4ERR_BAD_STATEID
) {
2329 exception
.retry
= 1;
2332 if (status
== -EAGAIN
) {
2333 /* We must have found a delegation */
2334 exception
.retry
= 1;
2337 if (nfs4_clear_cap_atomic_open_v1(server
, status
, &exception
))
2339 res
= ERR_PTR(nfs4_handle_exception(server
,
2340 status
, &exception
));
2341 } while (exception
.retry
);
2345 static int _nfs4_do_setattr(struct inode
*inode
, struct rpc_cred
*cred
,
2346 struct nfs_fattr
*fattr
, struct iattr
*sattr
,
2347 struct nfs4_state
*state
, struct nfs4_label
*ilabel
,
2348 struct nfs4_label
*olabel
)
2350 struct nfs_server
*server
= NFS_SERVER(inode
);
2351 struct nfs_setattrargs arg
= {
2352 .fh
= NFS_FH(inode
),
2355 .bitmask
= server
->attr_bitmask
,
2358 struct nfs_setattrres res
= {
2363 struct rpc_message msg
= {
2364 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETATTR
],
2369 unsigned long timestamp
= jiffies
;
2374 arg
.bitmask
= nfs4_bitmask(server
, ilabel
);
2376 arg
.bitmask
= nfs4_bitmask(server
, olabel
);
2378 nfs_fattr_init(fattr
);
2380 /* Servers should only apply open mode checks for file size changes */
2381 truncate
= (sattr
->ia_valid
& ATTR_SIZE
) ? true : false;
2382 fmode
= truncate
? FMODE_WRITE
: FMODE_READ
;
2384 if (nfs4_copy_delegation_stateid(&arg
.stateid
, inode
, fmode
)) {
2385 /* Use that stateid */
2386 } else if (truncate
&& state
!= NULL
&& nfs4_valid_open_stateid(state
)) {
2387 struct nfs_lockowner lockowner
= {
2388 .l_owner
= current
->files
,
2389 .l_pid
= current
->tgid
,
2391 nfs4_select_rw_stateid(&arg
.stateid
, state
, FMODE_WRITE
,
2394 nfs4_stateid_copy(&arg
.stateid
, &zero_stateid
);
2396 status
= nfs4_call_sync(server
->client
, server
, &msg
, &arg
.seq_args
, &res
.seq_res
, 1);
2397 if (status
== 0 && state
!= NULL
)
2398 renew_lease(server
, timestamp
);
2402 static int nfs4_do_setattr(struct inode
*inode
, struct rpc_cred
*cred
,
2403 struct nfs_fattr
*fattr
, struct iattr
*sattr
,
2404 struct nfs4_state
*state
, struct nfs4_label
*ilabel
,
2405 struct nfs4_label
*olabel
)
2407 struct nfs_server
*server
= NFS_SERVER(inode
);
2408 struct nfs4_exception exception
= {
2414 err
= _nfs4_do_setattr(inode
, cred
, fattr
, sattr
, state
, ilabel
, olabel
);
2415 trace_nfs4_setattr(inode
, err
);
2417 case -NFS4ERR_OPENMODE
:
2418 if (!(sattr
->ia_valid
& ATTR_SIZE
)) {
2419 pr_warn_once("NFSv4: server %s is incorrectly "
2420 "applying open mode checks to "
2421 "a SETATTR that is not "
2422 "changing file size.\n",
2423 server
->nfs_client
->cl_hostname
);
2425 if (state
&& !(state
->state
& FMODE_WRITE
)) {
2427 if (sattr
->ia_valid
& ATTR_OPEN
)
2432 err
= nfs4_handle_exception(server
, err
, &exception
);
2433 } while (exception
.retry
);
2438 struct nfs4_closedata
{
2439 struct inode
*inode
;
2440 struct nfs4_state
*state
;
2441 struct nfs_closeargs arg
;
2442 struct nfs_closeres res
;
2443 struct nfs_fattr fattr
;
2444 unsigned long timestamp
;
2449 static void nfs4_free_closedata(void *data
)
2451 struct nfs4_closedata
*calldata
= data
;
2452 struct nfs4_state_owner
*sp
= calldata
->state
->owner
;
2453 struct super_block
*sb
= calldata
->state
->inode
->i_sb
;
2456 pnfs_roc_release(calldata
->state
->inode
);
2457 nfs4_put_open_state(calldata
->state
);
2458 nfs_free_seqid(calldata
->arg
.seqid
);
2459 nfs4_put_state_owner(sp
);
2460 nfs_sb_deactive(sb
);
2464 static void nfs4_close_clear_stateid_flags(struct nfs4_state
*state
,
2467 spin_lock(&state
->owner
->so_lock
);
2468 clear_bit(NFS_O_RDWR_STATE
, &state
->flags
);
2469 switch (fmode
& (FMODE_READ
|FMODE_WRITE
)) {
2471 clear_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
2474 clear_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
2477 clear_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
2478 clear_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
2479 clear_bit(NFS_OPEN_STATE
, &state
->flags
);
2481 spin_unlock(&state
->owner
->so_lock
);
2484 static void nfs4_close_done(struct rpc_task
*task
, void *data
)
2486 struct nfs4_closedata
*calldata
= data
;
2487 struct nfs4_state
*state
= calldata
->state
;
2488 struct nfs_server
*server
= NFS_SERVER(calldata
->inode
);
2490 dprintk("%s: begin!\n", __func__
);
2491 if (!nfs4_sequence_done(task
, &calldata
->res
.seq_res
))
2493 trace_nfs4_close(state
, &calldata
->arg
, &calldata
->res
, task
->tk_status
);
2494 /* hmm. we are done with the inode, and in the process of freeing
2495 * the state_owner. we keep this around to process errors
2497 switch (task
->tk_status
) {
2500 pnfs_roc_set_barrier(state
->inode
,
2501 calldata
->roc_barrier
);
2502 nfs_set_open_stateid(state
, &calldata
->res
.stateid
, 0);
2503 renew_lease(server
, calldata
->timestamp
);
2504 nfs4_close_clear_stateid_flags(state
,
2505 calldata
->arg
.fmode
);
2507 case -NFS4ERR_STALE_STATEID
:
2508 case -NFS4ERR_OLD_STATEID
:
2509 case -NFS4ERR_BAD_STATEID
:
2510 case -NFS4ERR_EXPIRED
:
2511 if (calldata
->arg
.fmode
== 0)
2514 if (nfs4_async_handle_error(task
, server
, state
) == -EAGAIN
)
2515 rpc_restart_call_prepare(task
);
2517 nfs_release_seqid(calldata
->arg
.seqid
);
2518 nfs_refresh_inode(calldata
->inode
, calldata
->res
.fattr
);
2519 dprintk("%s: done, ret = %d!\n", __func__
, task
->tk_status
);
2522 static void nfs4_close_prepare(struct rpc_task
*task
, void *data
)
2524 struct nfs4_closedata
*calldata
= data
;
2525 struct nfs4_state
*state
= calldata
->state
;
2526 struct inode
*inode
= calldata
->inode
;
2529 dprintk("%s: begin!\n", __func__
);
2530 if (nfs_wait_on_sequence(calldata
->arg
.seqid
, task
) != 0)
2533 task
->tk_msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_OPEN_DOWNGRADE
];
2534 calldata
->arg
.fmode
= FMODE_READ
|FMODE_WRITE
;
2535 spin_lock(&state
->owner
->so_lock
);
2536 /* Calculate the change in open mode */
2537 if (state
->n_rdwr
== 0) {
2538 if (state
->n_rdonly
== 0) {
2539 call_close
|= test_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
2540 call_close
|= test_bit(NFS_O_RDWR_STATE
, &state
->flags
);
2541 calldata
->arg
.fmode
&= ~FMODE_READ
;
2543 if (state
->n_wronly
== 0) {
2544 call_close
|= test_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
2545 call_close
|= test_bit(NFS_O_RDWR_STATE
, &state
->flags
);
2546 calldata
->arg
.fmode
&= ~FMODE_WRITE
;
2549 if (!nfs4_valid_open_stateid(state
))
2551 spin_unlock(&state
->owner
->so_lock
);
2554 /* Note: exit _without_ calling nfs4_close_done */
2558 if (calldata
->arg
.fmode
== 0) {
2559 task
->tk_msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_CLOSE
];
2560 if (calldata
->roc
&&
2561 pnfs_roc_drain(inode
, &calldata
->roc_barrier
, task
)) {
2562 nfs_release_seqid(calldata
->arg
.seqid
);
2567 nfs_fattr_init(calldata
->res
.fattr
);
2568 calldata
->timestamp
= jiffies
;
2569 if (nfs4_setup_sequence(NFS_SERVER(inode
),
2570 &calldata
->arg
.seq_args
,
2571 &calldata
->res
.seq_res
,
2573 nfs_release_seqid(calldata
->arg
.seqid
);
2574 dprintk("%s: done!\n", __func__
);
2577 task
->tk_action
= NULL
;
2579 nfs4_sequence_done(task
, &calldata
->res
.seq_res
);
2582 static const struct rpc_call_ops nfs4_close_ops
= {
2583 .rpc_call_prepare
= nfs4_close_prepare
,
2584 .rpc_call_done
= nfs4_close_done
,
2585 .rpc_release
= nfs4_free_closedata
,
2589 * It is possible for data to be read/written from a mem-mapped file
2590 * after the sys_close call (which hits the vfs layer as a flush).
2591 * This means that we can't safely call nfsv4 close on a file until
2592 * the inode is cleared. This in turn means that we are not good
2593 * NFSv4 citizens - we do not indicate to the server to update the file's
2594 * share state even when we are done with one of the three share
2595 * stateid's in the inode.
2597 * NOTE: Caller must be holding the sp->so_owner semaphore!
2599 int nfs4_do_close(struct nfs4_state
*state
, gfp_t gfp_mask
, int wait
)
2601 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
2602 struct nfs4_closedata
*calldata
;
2603 struct nfs4_state_owner
*sp
= state
->owner
;
2604 struct rpc_task
*task
;
2605 struct rpc_message msg
= {
2606 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_CLOSE
],
2607 .rpc_cred
= state
->owner
->so_cred
,
2609 struct rpc_task_setup task_setup_data
= {
2610 .rpc_client
= server
->client
,
2611 .rpc_message
= &msg
,
2612 .callback_ops
= &nfs4_close_ops
,
2613 .workqueue
= nfsiod_workqueue
,
2614 .flags
= RPC_TASK_ASYNC
,
2616 int status
= -ENOMEM
;
2618 nfs4_state_protect(server
->nfs_client
, NFS_SP4_MACH_CRED_CLEANUP
,
2619 &task_setup_data
.rpc_client
, &msg
);
2621 calldata
= kzalloc(sizeof(*calldata
), gfp_mask
);
2622 if (calldata
== NULL
)
2624 nfs4_init_sequence(&calldata
->arg
.seq_args
, &calldata
->res
.seq_res
, 1);
2625 calldata
->inode
= state
->inode
;
2626 calldata
->state
= state
;
2627 calldata
->arg
.fh
= NFS_FH(state
->inode
);
2628 calldata
->arg
.stateid
= &state
->open_stateid
;
2629 /* Serialization for the sequence id */
2630 calldata
->arg
.seqid
= nfs_alloc_seqid(&state
->owner
->so_seqid
, gfp_mask
);
2631 if (calldata
->arg
.seqid
== NULL
)
2632 goto out_free_calldata
;
2633 calldata
->arg
.fmode
= 0;
2634 calldata
->arg
.bitmask
= server
->cache_consistency_bitmask
;
2635 calldata
->res
.fattr
= &calldata
->fattr
;
2636 calldata
->res
.seqid
= calldata
->arg
.seqid
;
2637 calldata
->res
.server
= server
;
2638 calldata
->roc
= pnfs_roc(state
->inode
);
2639 nfs_sb_active(calldata
->inode
->i_sb
);
2641 msg
.rpc_argp
= &calldata
->arg
;
2642 msg
.rpc_resp
= &calldata
->res
;
2643 task_setup_data
.callback_data
= calldata
;
2644 task
= rpc_run_task(&task_setup_data
);
2646 return PTR_ERR(task
);
2649 status
= rpc_wait_for_completion_task(task
);
2655 nfs4_put_open_state(state
);
2656 nfs4_put_state_owner(sp
);
2660 static struct inode
*
2661 nfs4_atomic_open(struct inode
*dir
, struct nfs_open_context
*ctx
, int open_flags
, struct iattr
*attr
)
2663 struct nfs4_state
*state
;
2664 struct nfs4_label l
= {0, 0, 0, NULL
}, *label
= NULL
;
2666 label
= nfs4_label_init_security(dir
, ctx
->dentry
, attr
, &l
);
2668 /* Protect against concurrent sillydeletes */
2669 state
= nfs4_do_open(dir
, ctx
, open_flags
, attr
, label
);
2671 nfs4_label_release_security(label
);
2674 return ERR_CAST(state
);
2675 return state
->inode
;
2678 static void nfs4_close_context(struct nfs_open_context
*ctx
, int is_sync
)
2680 if (ctx
->state
== NULL
)
2683 nfs4_close_sync(ctx
->state
, ctx
->mode
);
2685 nfs4_close_state(ctx
->state
, ctx
->mode
);
2688 static int _nfs4_server_capabilities(struct nfs_server
*server
, struct nfs_fh
*fhandle
)
2690 struct nfs4_server_caps_arg args
= {
2693 struct nfs4_server_caps_res res
= {};
2694 struct rpc_message msg
= {
2695 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SERVER_CAPS
],
2701 status
= nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
2703 memcpy(server
->attr_bitmask
, res
.attr_bitmask
, sizeof(server
->attr_bitmask
));
2704 server
->caps
&= ~(NFS_CAP_ACLS
|NFS_CAP_HARDLINKS
|
2705 NFS_CAP_SYMLINKS
|NFS_CAP_FILEID
|
2706 NFS_CAP_MODE
|NFS_CAP_NLINK
|NFS_CAP_OWNER
|
2707 NFS_CAP_OWNER_GROUP
|NFS_CAP_ATIME
|
2708 NFS_CAP_CTIME
|NFS_CAP_MTIME
);
2709 if (res
.attr_bitmask
[0] & FATTR4_WORD0_ACL
)
2710 server
->caps
|= NFS_CAP_ACLS
;
2711 if (res
.has_links
!= 0)
2712 server
->caps
|= NFS_CAP_HARDLINKS
;
2713 if (res
.has_symlinks
!= 0)
2714 server
->caps
|= NFS_CAP_SYMLINKS
;
2715 if (res
.attr_bitmask
[0] & FATTR4_WORD0_FILEID
)
2716 server
->caps
|= NFS_CAP_FILEID
;
2717 if (res
.attr_bitmask
[1] & FATTR4_WORD1_MODE
)
2718 server
->caps
|= NFS_CAP_MODE
;
2719 if (res
.attr_bitmask
[1] & FATTR4_WORD1_NUMLINKS
)
2720 server
->caps
|= NFS_CAP_NLINK
;
2721 if (res
.attr_bitmask
[1] & FATTR4_WORD1_OWNER
)
2722 server
->caps
|= NFS_CAP_OWNER
;
2723 if (res
.attr_bitmask
[1] & FATTR4_WORD1_OWNER_GROUP
)
2724 server
->caps
|= NFS_CAP_OWNER_GROUP
;
2725 if (res
.attr_bitmask
[1] & FATTR4_WORD1_TIME_ACCESS
)
2726 server
->caps
|= NFS_CAP_ATIME
;
2727 if (res
.attr_bitmask
[1] & FATTR4_WORD1_TIME_METADATA
)
2728 server
->caps
|= NFS_CAP_CTIME
;
2729 if (res
.attr_bitmask
[1] & FATTR4_WORD1_TIME_MODIFY
)
2730 server
->caps
|= NFS_CAP_MTIME
;
2731 #ifdef CONFIG_NFS_V4_SECURITY_LABEL
2732 if (res
.attr_bitmask
[2] & FATTR4_WORD2_SECURITY_LABEL
)
2733 server
->caps
|= NFS_CAP_SECURITY_LABEL
;
2735 memcpy(server
->attr_bitmask_nl
, res
.attr_bitmask
,
2736 sizeof(server
->attr_bitmask
));
2738 if (server
->caps
& NFS_CAP_SECURITY_LABEL
) {
2739 server
->attr_bitmask_nl
[2] &= ~FATTR4_WORD2_SECURITY_LABEL
;
2740 res
.attr_bitmask
[2] &= ~FATTR4_WORD2_SECURITY_LABEL
;
2742 memcpy(server
->cache_consistency_bitmask
, res
.attr_bitmask
, sizeof(server
->cache_consistency_bitmask
));
2743 server
->cache_consistency_bitmask
[0] &= FATTR4_WORD0_CHANGE
|FATTR4_WORD0_SIZE
;
2744 server
->cache_consistency_bitmask
[1] &= FATTR4_WORD1_TIME_METADATA
|FATTR4_WORD1_TIME_MODIFY
;
2745 server
->acl_bitmask
= res
.acl_bitmask
;
2746 server
->fh_expire_type
= res
.fh_expire_type
;
2752 int nfs4_server_capabilities(struct nfs_server
*server
, struct nfs_fh
*fhandle
)
2754 struct nfs4_exception exception
= { };
2757 err
= nfs4_handle_exception(server
,
2758 _nfs4_server_capabilities(server
, fhandle
),
2760 } while (exception
.retry
);
2764 static int _nfs4_lookup_root(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
2765 struct nfs_fsinfo
*info
)
2768 struct nfs4_lookup_root_arg args
= {
2771 struct nfs4_lookup_res res
= {
2773 .fattr
= info
->fattr
,
2776 struct rpc_message msg
= {
2777 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOOKUP_ROOT
],
2782 bitmask
[0] = nfs4_fattr_bitmap
[0];
2783 bitmask
[1] = nfs4_fattr_bitmap
[1];
2785 * Process the label in the upcoming getfattr
2787 bitmask
[2] = nfs4_fattr_bitmap
[2] & ~FATTR4_WORD2_SECURITY_LABEL
;
2789 nfs_fattr_init(info
->fattr
);
2790 return nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
2793 static int nfs4_lookup_root(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
2794 struct nfs_fsinfo
*info
)
2796 struct nfs4_exception exception
= { };
2799 err
= _nfs4_lookup_root(server
, fhandle
, info
);
2800 trace_nfs4_lookup_root(server
, fhandle
, info
->fattr
, err
);
2803 case -NFS4ERR_WRONGSEC
:
2806 err
= nfs4_handle_exception(server
, err
, &exception
);
2808 } while (exception
.retry
);
2813 static int nfs4_lookup_root_sec(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
2814 struct nfs_fsinfo
*info
, rpc_authflavor_t flavor
)
2816 struct rpc_auth_create_args auth_args
= {
2817 .pseudoflavor
= flavor
,
2819 struct rpc_auth
*auth
;
2822 auth
= rpcauth_create(&auth_args
, server
->client
);
2827 ret
= nfs4_lookup_root(server
, fhandle
, info
);
2833 * Retry pseudoroot lookup with various security flavors. We do this when:
2835 * NFSv4.0: the PUTROOTFH operation returns NFS4ERR_WRONGSEC
2836 * NFSv4.1: the server does not support the SECINFO_NO_NAME operation
2838 * Returns zero on success, or a negative NFS4ERR value, or a
2839 * negative errno value.
2841 static int nfs4_find_root_sec(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
2842 struct nfs_fsinfo
*info
)
2844 /* Per 3530bis 15.33.5 */
2845 static const rpc_authflavor_t flav_array
[] = {
2849 RPC_AUTH_UNIX
, /* courtesy */
2852 int status
= -EPERM
;
2855 for (i
= 0; i
< ARRAY_SIZE(flav_array
); i
++) {
2856 status
= nfs4_lookup_root_sec(server
, fhandle
, info
, flav_array
[i
]);
2857 if (status
== -NFS4ERR_WRONGSEC
|| status
== -EACCES
)
2863 * -EACCESS could mean that the user doesn't have correct permissions
2864 * to access the mount. It could also mean that we tried to mount
2865 * with a gss auth flavor, but rpc.gssd isn't running. Either way,
2866 * existing mount programs don't handle -EACCES very well so it should
2867 * be mapped to -EPERM instead.
2869 if (status
== -EACCES
)
2874 static int nfs4_do_find_root_sec(struct nfs_server
*server
,
2875 struct nfs_fh
*fhandle
, struct nfs_fsinfo
*info
)
2877 int mv
= server
->nfs_client
->cl_minorversion
;
2878 return nfs_v4_minor_ops
[mv
]->find_root_sec(server
, fhandle
, info
);
2882 * nfs4_proc_get_rootfh - get file handle for server's pseudoroot
2883 * @server: initialized nfs_server handle
2884 * @fhandle: we fill in the pseudo-fs root file handle
2885 * @info: we fill in an FSINFO struct
2887 * Returns zero on success, or a negative errno.
2889 int nfs4_proc_get_rootfh(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
2890 struct nfs_fsinfo
*info
)
2894 status
= nfs4_lookup_root(server
, fhandle
, info
);
2895 if ((status
== -NFS4ERR_WRONGSEC
) &&
2896 !(server
->flags
& NFS_MOUNT_SECFLAVOUR
))
2897 status
= nfs4_do_find_root_sec(server
, fhandle
, info
);
2900 status
= nfs4_server_capabilities(server
, fhandle
);
2902 status
= nfs4_do_fsinfo(server
, fhandle
, info
);
2904 return nfs4_map_errors(status
);
2907 static int nfs4_proc_get_root(struct nfs_server
*server
, struct nfs_fh
*mntfh
,
2908 struct nfs_fsinfo
*info
)
2911 struct nfs_fattr
*fattr
= info
->fattr
;
2912 struct nfs4_label
*label
= NULL
;
2914 error
= nfs4_server_capabilities(server
, mntfh
);
2916 dprintk("nfs4_get_root: getcaps error = %d\n", -error
);
2920 label
= nfs4_label_alloc(server
, GFP_KERNEL
);
2922 return PTR_ERR(label
);
2924 error
= nfs4_proc_getattr(server
, mntfh
, fattr
, label
);
2926 dprintk("nfs4_get_root: getattr error = %d\n", -error
);
2927 goto err_free_label
;
2930 if (fattr
->valid
& NFS_ATTR_FATTR_FSID
&&
2931 !nfs_fsid_equal(&server
->fsid
, &fattr
->fsid
))
2932 memcpy(&server
->fsid
, &fattr
->fsid
, sizeof(server
->fsid
));
2935 nfs4_label_free(label
);
2941 * Get locations and (maybe) other attributes of a referral.
2942 * Note that we'll actually follow the referral later when
2943 * we detect fsid mismatch in inode revalidation
2945 static int nfs4_get_referral(struct rpc_clnt
*client
, struct inode
*dir
,
2946 const struct qstr
*name
, struct nfs_fattr
*fattr
,
2947 struct nfs_fh
*fhandle
)
2949 int status
= -ENOMEM
;
2950 struct page
*page
= NULL
;
2951 struct nfs4_fs_locations
*locations
= NULL
;
2953 page
= alloc_page(GFP_KERNEL
);
2956 locations
= kmalloc(sizeof(struct nfs4_fs_locations
), GFP_KERNEL
);
2957 if (locations
== NULL
)
2960 status
= nfs4_proc_fs_locations(client
, dir
, name
, locations
, page
);
2963 /* Make sure server returned a different fsid for the referral */
2964 if (nfs_fsid_equal(&NFS_SERVER(dir
)->fsid
, &locations
->fattr
.fsid
)) {
2965 dprintk("%s: server did not return a different fsid for"
2966 " a referral at %s\n", __func__
, name
->name
);
2970 /* Fixup attributes for the nfs_lookup() call to nfs_fhget() */
2971 nfs_fixup_referral_attributes(&locations
->fattr
);
2973 /* replace the lookup nfs_fattr with the locations nfs_fattr */
2974 memcpy(fattr
, &locations
->fattr
, sizeof(struct nfs_fattr
));
2975 memset(fhandle
, 0, sizeof(struct nfs_fh
));
2983 static int _nfs4_proc_getattr(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
2984 struct nfs_fattr
*fattr
, struct nfs4_label
*label
)
2986 struct nfs4_getattr_arg args
= {
2988 .bitmask
= server
->attr_bitmask
,
2990 struct nfs4_getattr_res res
= {
2995 struct rpc_message msg
= {
2996 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GETATTR
],
3001 args
.bitmask
= nfs4_bitmask(server
, label
);
3003 nfs_fattr_init(fattr
);
3004 return nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
3007 static int nfs4_proc_getattr(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
3008 struct nfs_fattr
*fattr
, struct nfs4_label
*label
)
3010 struct nfs4_exception exception
= { };
3013 err
= _nfs4_proc_getattr(server
, fhandle
, fattr
, label
);
3014 trace_nfs4_getattr(server
, fhandle
, fattr
, err
);
3015 err
= nfs4_handle_exception(server
, err
,
3017 } while (exception
.retry
);
3022 * The file is not closed if it is opened due to the a request to change
3023 * the size of the file. The open call will not be needed once the
3024 * VFS layer lookup-intents are implemented.
3026 * Close is called when the inode is destroyed.
3027 * If we haven't opened the file for O_WRONLY, we
3028 * need to in the size_change case to obtain a stateid.
3031 * Because OPEN is always done by name in nfsv4, it is
3032 * possible that we opened a different file by the same
3033 * name. We can recognize this race condition, but we
3034 * can't do anything about it besides returning an error.
3036 * This will be fixed with VFS changes (lookup-intent).
3039 nfs4_proc_setattr(struct dentry
*dentry
, struct nfs_fattr
*fattr
,
3040 struct iattr
*sattr
)
3042 struct inode
*inode
= dentry
->d_inode
;
3043 struct rpc_cred
*cred
= NULL
;
3044 struct nfs4_state
*state
= NULL
;
3045 struct nfs4_label
*label
= NULL
;
3048 if (pnfs_ld_layoutret_on_setattr(inode
))
3049 pnfs_commit_and_return_layout(inode
);
3051 nfs_fattr_init(fattr
);
3053 /* Deal with open(O_TRUNC) */
3054 if (sattr
->ia_valid
& ATTR_OPEN
)
3055 sattr
->ia_valid
&= ~(ATTR_MTIME
|ATTR_CTIME
);
3057 /* Optimization: if the end result is no change, don't RPC */
3058 if ((sattr
->ia_valid
& ~(ATTR_FILE
|ATTR_OPEN
)) == 0)
3061 /* Search for an existing open(O_WRITE) file */
3062 if (sattr
->ia_valid
& ATTR_FILE
) {
3063 struct nfs_open_context
*ctx
;
3065 ctx
= nfs_file_open_context(sattr
->ia_file
);
3072 label
= nfs4_label_alloc(NFS_SERVER(inode
), GFP_KERNEL
);
3074 return PTR_ERR(label
);
3076 status
= nfs4_do_setattr(inode
, cred
, fattr
, sattr
, state
, NULL
, label
);
3078 nfs_setattr_update_inode(inode
, sattr
);
3079 nfs_setsecurity(inode
, fattr
, label
);
3081 nfs4_label_free(label
);
3085 static int _nfs4_proc_lookup(struct rpc_clnt
*clnt
, struct inode
*dir
,
3086 const struct qstr
*name
, struct nfs_fh
*fhandle
,
3087 struct nfs_fattr
*fattr
, struct nfs4_label
*label
)
3089 struct nfs_server
*server
= NFS_SERVER(dir
);
3091 struct nfs4_lookup_arg args
= {
3092 .bitmask
= server
->attr_bitmask
,
3093 .dir_fh
= NFS_FH(dir
),
3096 struct nfs4_lookup_res res
= {
3102 struct rpc_message msg
= {
3103 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOOKUP
],
3108 args
.bitmask
= nfs4_bitmask(server
, label
);
3110 nfs_fattr_init(fattr
);
3112 dprintk("NFS call lookup %s\n", name
->name
);
3113 status
= nfs4_call_sync(clnt
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
3114 dprintk("NFS reply lookup: %d\n", status
);
3118 static void nfs_fixup_secinfo_attributes(struct nfs_fattr
*fattr
)
3120 fattr
->valid
|= NFS_ATTR_FATTR_TYPE
| NFS_ATTR_FATTR_MODE
|
3121 NFS_ATTR_FATTR_NLINK
| NFS_ATTR_FATTR_MOUNTPOINT
;
3122 fattr
->mode
= S_IFDIR
| S_IRUGO
| S_IXUGO
;
3126 static int nfs4_proc_lookup_common(struct rpc_clnt
**clnt
, struct inode
*dir
,
3127 struct qstr
*name
, struct nfs_fh
*fhandle
,
3128 struct nfs_fattr
*fattr
, struct nfs4_label
*label
)
3130 struct nfs4_exception exception
= { };
3131 struct rpc_clnt
*client
= *clnt
;
3134 err
= _nfs4_proc_lookup(client
, dir
, name
, fhandle
, fattr
, label
);
3135 trace_nfs4_lookup(dir
, name
, err
);
3137 case -NFS4ERR_BADNAME
:
3140 case -NFS4ERR_MOVED
:
3141 err
= nfs4_get_referral(client
, dir
, name
, fattr
, fhandle
);
3143 case -NFS4ERR_WRONGSEC
:
3145 if (client
!= *clnt
)
3148 client
= nfs4_create_sec_client(client
, dir
, name
);
3150 return PTR_ERR(client
);
3152 exception
.retry
= 1;
3155 err
= nfs4_handle_exception(NFS_SERVER(dir
), err
, &exception
);
3157 } while (exception
.retry
);
3162 else if (client
!= *clnt
)
3163 rpc_shutdown_client(client
);
3168 static int nfs4_proc_lookup(struct inode
*dir
, struct qstr
*name
,
3169 struct nfs_fh
*fhandle
, struct nfs_fattr
*fattr
,
3170 struct nfs4_label
*label
)
3173 struct rpc_clnt
*client
= NFS_CLIENT(dir
);
3175 status
= nfs4_proc_lookup_common(&client
, dir
, name
, fhandle
, fattr
, label
);
3176 if (client
!= NFS_CLIENT(dir
)) {
3177 rpc_shutdown_client(client
);
3178 nfs_fixup_secinfo_attributes(fattr
);
3184 nfs4_proc_lookup_mountpoint(struct inode
*dir
, struct qstr
*name
,
3185 struct nfs_fh
*fhandle
, struct nfs_fattr
*fattr
)
3188 struct rpc_clnt
*client
= rpc_clone_client(NFS_CLIENT(dir
));
3190 status
= nfs4_proc_lookup_common(&client
, dir
, name
, fhandle
, fattr
, NULL
);
3192 rpc_shutdown_client(client
);
3193 return ERR_PTR(status
);
3198 static int _nfs4_proc_access(struct inode
*inode
, struct nfs_access_entry
*entry
)
3200 struct nfs_server
*server
= NFS_SERVER(inode
);
3201 struct nfs4_accessargs args
= {
3202 .fh
= NFS_FH(inode
),
3203 .bitmask
= server
->cache_consistency_bitmask
,
3205 struct nfs4_accessres res
= {
3208 struct rpc_message msg
= {
3209 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_ACCESS
],
3212 .rpc_cred
= entry
->cred
,
3214 int mode
= entry
->mask
;
3218 * Determine which access bits we want to ask for...
3220 if (mode
& MAY_READ
)
3221 args
.access
|= NFS4_ACCESS_READ
;
3222 if (S_ISDIR(inode
->i_mode
)) {
3223 if (mode
& MAY_WRITE
)
3224 args
.access
|= NFS4_ACCESS_MODIFY
| NFS4_ACCESS_EXTEND
| NFS4_ACCESS_DELETE
;
3225 if (mode
& MAY_EXEC
)
3226 args
.access
|= NFS4_ACCESS_LOOKUP
;
3228 if (mode
& MAY_WRITE
)
3229 args
.access
|= NFS4_ACCESS_MODIFY
| NFS4_ACCESS_EXTEND
;
3230 if (mode
& MAY_EXEC
)
3231 args
.access
|= NFS4_ACCESS_EXECUTE
;
3234 res
.fattr
= nfs_alloc_fattr();
3235 if (res
.fattr
== NULL
)
3238 status
= nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
3240 nfs_access_set_mask(entry
, res
.access
);
3241 nfs_refresh_inode(inode
, res
.fattr
);
3243 nfs_free_fattr(res
.fattr
);
3247 static int nfs4_proc_access(struct inode
*inode
, struct nfs_access_entry
*entry
)
3249 struct nfs4_exception exception
= { };
3252 err
= _nfs4_proc_access(inode
, entry
);
3253 trace_nfs4_access(inode
, err
);
3254 err
= nfs4_handle_exception(NFS_SERVER(inode
), err
,
3256 } while (exception
.retry
);
3261 * TODO: For the time being, we don't try to get any attributes
3262 * along with any of the zero-copy operations READ, READDIR,
3265 * In the case of the first three, we want to put the GETATTR
3266 * after the read-type operation -- this is because it is hard
3267 * to predict the length of a GETATTR response in v4, and thus
3268 * align the READ data correctly. This means that the GETATTR
3269 * may end up partially falling into the page cache, and we should
3270 * shift it into the 'tail' of the xdr_buf before processing.
3271 * To do this efficiently, we need to know the total length
3272 * of data received, which doesn't seem to be available outside
3275 * In the case of WRITE, we also want to put the GETATTR after
3276 * the operation -- in this case because we want to make sure
3277 * we get the post-operation mtime and size.
3279 * Both of these changes to the XDR layer would in fact be quite
3280 * minor, but I decided to leave them for a subsequent patch.
3282 static int _nfs4_proc_readlink(struct inode
*inode
, struct page
*page
,
3283 unsigned int pgbase
, unsigned int pglen
)
3285 struct nfs4_readlink args
= {
3286 .fh
= NFS_FH(inode
),
3291 struct nfs4_readlink_res res
;
3292 struct rpc_message msg
= {
3293 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_READLINK
],
3298 return nfs4_call_sync(NFS_SERVER(inode
)->client
, NFS_SERVER(inode
), &msg
, &args
.seq_args
, &res
.seq_res
, 0);
3301 static int nfs4_proc_readlink(struct inode
*inode
, struct page
*page
,
3302 unsigned int pgbase
, unsigned int pglen
)
3304 struct nfs4_exception exception
= { };
3307 err
= _nfs4_proc_readlink(inode
, page
, pgbase
, pglen
);
3308 trace_nfs4_readlink(inode
, err
);
3309 err
= nfs4_handle_exception(NFS_SERVER(inode
), err
,
3311 } while (exception
.retry
);
3316 * This is just for mknod. open(O_CREAT) will always do ->open_context().
3319 nfs4_proc_create(struct inode
*dir
, struct dentry
*dentry
, struct iattr
*sattr
,
3322 struct nfs4_label l
, *ilabel
= NULL
;
3323 struct nfs_open_context
*ctx
;
3324 struct nfs4_state
*state
;
3327 ctx
= alloc_nfs_open_context(dentry
, FMODE_READ
);
3329 return PTR_ERR(ctx
);
3331 ilabel
= nfs4_label_init_security(dir
, dentry
, sattr
, &l
);
3333 sattr
->ia_mode
&= ~current_umask();
3334 state
= nfs4_do_open(dir
, ctx
, flags
, sattr
, ilabel
);
3335 if (IS_ERR(state
)) {
3336 status
= PTR_ERR(state
);
3340 nfs4_label_release_security(ilabel
);
3341 put_nfs_open_context(ctx
);
3345 static int _nfs4_proc_remove(struct inode
*dir
, struct qstr
*name
)
3347 struct nfs_server
*server
= NFS_SERVER(dir
);
3348 struct nfs_removeargs args
= {
3352 struct nfs_removeres res
= {
3355 struct rpc_message msg
= {
3356 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_REMOVE
],
3362 status
= nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 1);
3364 update_changeattr(dir
, &res
.cinfo
);
3368 static int nfs4_proc_remove(struct inode
*dir
, struct qstr
*name
)
3370 struct nfs4_exception exception
= { };
3373 err
= _nfs4_proc_remove(dir
, name
);
3374 trace_nfs4_remove(dir
, name
, err
);
3375 err
= nfs4_handle_exception(NFS_SERVER(dir
), err
,
3377 } while (exception
.retry
);
3381 static void nfs4_proc_unlink_setup(struct rpc_message
*msg
, struct inode
*dir
)
3383 struct nfs_server
*server
= NFS_SERVER(dir
);
3384 struct nfs_removeargs
*args
= msg
->rpc_argp
;
3385 struct nfs_removeres
*res
= msg
->rpc_resp
;
3387 res
->server
= server
;
3388 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_REMOVE
];
3389 nfs4_init_sequence(&args
->seq_args
, &res
->seq_res
, 1);
3391 nfs_fattr_init(res
->dir_attr
);
3394 static void nfs4_proc_unlink_rpc_prepare(struct rpc_task
*task
, struct nfs_unlinkdata
*data
)
3396 nfs4_setup_sequence(NFS_SERVER(data
->dir
),
3397 &data
->args
.seq_args
,
3402 static int nfs4_proc_unlink_done(struct rpc_task
*task
, struct inode
*dir
)
3404 struct nfs_unlinkdata
*data
= task
->tk_calldata
;
3405 struct nfs_removeres
*res
= &data
->res
;
3407 if (!nfs4_sequence_done(task
, &res
->seq_res
))
3409 if (nfs4_async_handle_error(task
, res
->server
, NULL
) == -EAGAIN
)
3411 update_changeattr(dir
, &res
->cinfo
);
3415 static void nfs4_proc_rename_setup(struct rpc_message
*msg
, struct inode
*dir
)
3417 struct nfs_server
*server
= NFS_SERVER(dir
);
3418 struct nfs_renameargs
*arg
= msg
->rpc_argp
;
3419 struct nfs_renameres
*res
= msg
->rpc_resp
;
3421 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RENAME
];
3422 res
->server
= server
;
3423 nfs4_init_sequence(&arg
->seq_args
, &res
->seq_res
, 1);
3426 static void nfs4_proc_rename_rpc_prepare(struct rpc_task
*task
, struct nfs_renamedata
*data
)
3428 nfs4_setup_sequence(NFS_SERVER(data
->old_dir
),
3429 &data
->args
.seq_args
,
3434 static int nfs4_proc_rename_done(struct rpc_task
*task
, struct inode
*old_dir
,
3435 struct inode
*new_dir
)
3437 struct nfs_renamedata
*data
= task
->tk_calldata
;
3438 struct nfs_renameres
*res
= &data
->res
;
3440 if (!nfs4_sequence_done(task
, &res
->seq_res
))
3442 if (nfs4_async_handle_error(task
, res
->server
, NULL
) == -EAGAIN
)
3445 update_changeattr(old_dir
, &res
->old_cinfo
);
3446 update_changeattr(new_dir
, &res
->new_cinfo
);
3450 static int _nfs4_proc_rename(struct inode
*old_dir
, struct qstr
*old_name
,
3451 struct inode
*new_dir
, struct qstr
*new_name
)
3453 struct nfs_server
*server
= NFS_SERVER(old_dir
);
3454 struct nfs_renameargs arg
= {
3455 .old_dir
= NFS_FH(old_dir
),
3456 .new_dir
= NFS_FH(new_dir
),
3457 .old_name
= old_name
,
3458 .new_name
= new_name
,
3460 struct nfs_renameres res
= {
3463 struct rpc_message msg
= {
3464 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RENAME
],
3468 int status
= -ENOMEM
;
3470 status
= nfs4_call_sync(server
->client
, server
, &msg
, &arg
.seq_args
, &res
.seq_res
, 1);
3472 update_changeattr(old_dir
, &res
.old_cinfo
);
3473 update_changeattr(new_dir
, &res
.new_cinfo
);
3478 static int nfs4_proc_rename(struct inode
*old_dir
, struct qstr
*old_name
,
3479 struct inode
*new_dir
, struct qstr
*new_name
)
3481 struct nfs4_exception exception
= { };
3484 err
= _nfs4_proc_rename(old_dir
, old_name
,
3486 trace_nfs4_rename(old_dir
, old_name
, new_dir
, new_name
, err
);
3487 err
= nfs4_handle_exception(NFS_SERVER(old_dir
), err
,
3489 } while (exception
.retry
);
3493 static int _nfs4_proc_link(struct inode
*inode
, struct inode
*dir
, struct qstr
*name
)
3495 struct nfs_server
*server
= NFS_SERVER(inode
);
3496 struct nfs4_link_arg arg
= {
3497 .fh
= NFS_FH(inode
),
3498 .dir_fh
= NFS_FH(dir
),
3500 .bitmask
= server
->attr_bitmask
,
3502 struct nfs4_link_res res
= {
3506 struct rpc_message msg
= {
3507 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LINK
],
3511 int status
= -ENOMEM
;
3513 res
.fattr
= nfs_alloc_fattr();
3514 if (res
.fattr
== NULL
)
3517 res
.label
= nfs4_label_alloc(server
, GFP_KERNEL
);
3518 if (IS_ERR(res
.label
)) {
3519 status
= PTR_ERR(res
.label
);
3522 arg
.bitmask
= nfs4_bitmask(server
, res
.label
);
3524 status
= nfs4_call_sync(server
->client
, server
, &msg
, &arg
.seq_args
, &res
.seq_res
, 1);
3526 update_changeattr(dir
, &res
.cinfo
);
3527 status
= nfs_post_op_update_inode(inode
, res
.fattr
);
3529 nfs_setsecurity(inode
, res
.fattr
, res
.label
);
3533 nfs4_label_free(res
.label
);
3536 nfs_free_fattr(res
.fattr
);
3540 static int nfs4_proc_link(struct inode
*inode
, struct inode
*dir
, struct qstr
*name
)
3542 struct nfs4_exception exception
= { };
3545 err
= nfs4_handle_exception(NFS_SERVER(inode
),
3546 _nfs4_proc_link(inode
, dir
, name
),
3548 } while (exception
.retry
);
3552 struct nfs4_createdata
{
3553 struct rpc_message msg
;
3554 struct nfs4_create_arg arg
;
3555 struct nfs4_create_res res
;
3557 struct nfs_fattr fattr
;
3558 struct nfs4_label
*label
;
3561 static struct nfs4_createdata
*nfs4_alloc_createdata(struct inode
*dir
,
3562 struct qstr
*name
, struct iattr
*sattr
, u32 ftype
)
3564 struct nfs4_createdata
*data
;
3566 data
= kzalloc(sizeof(*data
), GFP_KERNEL
);
3568 struct nfs_server
*server
= NFS_SERVER(dir
);
3570 data
->label
= nfs4_label_alloc(server
, GFP_KERNEL
);
3571 if (IS_ERR(data
->label
))
3574 data
->msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_CREATE
];
3575 data
->msg
.rpc_argp
= &data
->arg
;
3576 data
->msg
.rpc_resp
= &data
->res
;
3577 data
->arg
.dir_fh
= NFS_FH(dir
);
3578 data
->arg
.server
= server
;
3579 data
->arg
.name
= name
;
3580 data
->arg
.attrs
= sattr
;
3581 data
->arg
.ftype
= ftype
;
3582 data
->arg
.bitmask
= nfs4_bitmask(server
, data
->label
);
3583 data
->res
.server
= server
;
3584 data
->res
.fh
= &data
->fh
;
3585 data
->res
.fattr
= &data
->fattr
;
3586 data
->res
.label
= data
->label
;
3587 nfs_fattr_init(data
->res
.fattr
);
3595 static int nfs4_do_create(struct inode
*dir
, struct dentry
*dentry
, struct nfs4_createdata
*data
)
3597 int status
= nfs4_call_sync(NFS_SERVER(dir
)->client
, NFS_SERVER(dir
), &data
->msg
,
3598 &data
->arg
.seq_args
, &data
->res
.seq_res
, 1);
3600 update_changeattr(dir
, &data
->res
.dir_cinfo
);
3601 status
= nfs_instantiate(dentry
, data
->res
.fh
, data
->res
.fattr
, data
->res
.label
);
3606 static void nfs4_free_createdata(struct nfs4_createdata
*data
)
3608 nfs4_label_free(data
->label
);
3612 static int _nfs4_proc_symlink(struct inode
*dir
, struct dentry
*dentry
,
3613 struct page
*page
, unsigned int len
, struct iattr
*sattr
,
3614 struct nfs4_label
*label
)
3616 struct nfs4_createdata
*data
;
3617 int status
= -ENAMETOOLONG
;
3619 if (len
> NFS4_MAXPATHLEN
)
3623 data
= nfs4_alloc_createdata(dir
, &dentry
->d_name
, sattr
, NF4LNK
);
3627 data
->msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SYMLINK
];
3628 data
->arg
.u
.symlink
.pages
= &page
;
3629 data
->arg
.u
.symlink
.len
= len
;
3630 data
->arg
.label
= label
;
3632 status
= nfs4_do_create(dir
, dentry
, data
);
3634 nfs4_free_createdata(data
);
3639 static int nfs4_proc_symlink(struct inode
*dir
, struct dentry
*dentry
,
3640 struct page
*page
, unsigned int len
, struct iattr
*sattr
)
3642 struct nfs4_exception exception
= { };
3643 struct nfs4_label l
, *label
= NULL
;
3646 label
= nfs4_label_init_security(dir
, dentry
, sattr
, &l
);
3649 err
= _nfs4_proc_symlink(dir
, dentry
, page
, len
, sattr
, label
);
3650 trace_nfs4_symlink(dir
, &dentry
->d_name
, err
);
3651 err
= nfs4_handle_exception(NFS_SERVER(dir
), err
,
3653 } while (exception
.retry
);
3655 nfs4_label_release_security(label
);
3659 static int _nfs4_proc_mkdir(struct inode
*dir
, struct dentry
*dentry
,
3660 struct iattr
*sattr
, struct nfs4_label
*label
)
3662 struct nfs4_createdata
*data
;
3663 int status
= -ENOMEM
;
3665 data
= nfs4_alloc_createdata(dir
, &dentry
->d_name
, sattr
, NF4DIR
);
3669 data
->arg
.label
= label
;
3670 status
= nfs4_do_create(dir
, dentry
, data
);
3672 nfs4_free_createdata(data
);
3677 static int nfs4_proc_mkdir(struct inode
*dir
, struct dentry
*dentry
,
3678 struct iattr
*sattr
)
3680 struct nfs4_exception exception
= { };
3681 struct nfs4_label l
, *label
= NULL
;
3684 label
= nfs4_label_init_security(dir
, dentry
, sattr
, &l
);
3686 sattr
->ia_mode
&= ~current_umask();
3688 err
= _nfs4_proc_mkdir(dir
, dentry
, sattr
, label
);
3689 trace_nfs4_mkdir(dir
, &dentry
->d_name
, err
);
3690 err
= nfs4_handle_exception(NFS_SERVER(dir
), err
,
3692 } while (exception
.retry
);
3693 nfs4_label_release_security(label
);
3698 static int _nfs4_proc_readdir(struct dentry
*dentry
, struct rpc_cred
*cred
,
3699 u64 cookie
, struct page
**pages
, unsigned int count
, int plus
)
3701 struct inode
*dir
= dentry
->d_inode
;
3702 struct nfs4_readdir_arg args
= {
3707 .bitmask
= NFS_SERVER(dentry
->d_inode
)->attr_bitmask
,
3710 struct nfs4_readdir_res res
;
3711 struct rpc_message msg
= {
3712 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_READDIR
],
3719 dprintk("%s: dentry = %s/%s, cookie = %Lu\n", __func__
,
3720 dentry
->d_parent
->d_name
.name
,
3721 dentry
->d_name
.name
,
3722 (unsigned long long)cookie
);
3723 nfs4_setup_readdir(cookie
, NFS_I(dir
)->cookieverf
, dentry
, &args
);
3724 res
.pgbase
= args
.pgbase
;
3725 status
= nfs4_call_sync(NFS_SERVER(dir
)->client
, NFS_SERVER(dir
), &msg
, &args
.seq_args
, &res
.seq_res
, 0);
3727 memcpy(NFS_I(dir
)->cookieverf
, res
.verifier
.data
, NFS4_VERIFIER_SIZE
);
3728 status
+= args
.pgbase
;
3731 nfs_invalidate_atime(dir
);
3733 dprintk("%s: returns %d\n", __func__
, status
);
3737 static int nfs4_proc_readdir(struct dentry
*dentry
, struct rpc_cred
*cred
,
3738 u64 cookie
, struct page
**pages
, unsigned int count
, int plus
)
3740 struct nfs4_exception exception
= { };
3743 err
= _nfs4_proc_readdir(dentry
, cred
, cookie
,
3744 pages
, count
, plus
);
3745 trace_nfs4_readdir(dentry
->d_inode
, err
);
3746 err
= nfs4_handle_exception(NFS_SERVER(dentry
->d_inode
), err
,
3748 } while (exception
.retry
);
3752 static int _nfs4_proc_mknod(struct inode
*dir
, struct dentry
*dentry
,
3753 struct iattr
*sattr
, struct nfs4_label
*label
, dev_t rdev
)
3755 struct nfs4_createdata
*data
;
3756 int mode
= sattr
->ia_mode
;
3757 int status
= -ENOMEM
;
3759 data
= nfs4_alloc_createdata(dir
, &dentry
->d_name
, sattr
, NF4SOCK
);
3764 data
->arg
.ftype
= NF4FIFO
;
3765 else if (S_ISBLK(mode
)) {
3766 data
->arg
.ftype
= NF4BLK
;
3767 data
->arg
.u
.device
.specdata1
= MAJOR(rdev
);
3768 data
->arg
.u
.device
.specdata2
= MINOR(rdev
);
3770 else if (S_ISCHR(mode
)) {
3771 data
->arg
.ftype
= NF4CHR
;
3772 data
->arg
.u
.device
.specdata1
= MAJOR(rdev
);
3773 data
->arg
.u
.device
.specdata2
= MINOR(rdev
);
3774 } else if (!S_ISSOCK(mode
)) {
3779 data
->arg
.label
= label
;
3780 status
= nfs4_do_create(dir
, dentry
, data
);
3782 nfs4_free_createdata(data
);
3787 static int nfs4_proc_mknod(struct inode
*dir
, struct dentry
*dentry
,
3788 struct iattr
*sattr
, dev_t rdev
)
3790 struct nfs4_exception exception
= { };
3791 struct nfs4_label l
, *label
= NULL
;
3794 label
= nfs4_label_init_security(dir
, dentry
, sattr
, &l
);
3796 sattr
->ia_mode
&= ~current_umask();
3798 err
= _nfs4_proc_mknod(dir
, dentry
, sattr
, label
, rdev
);
3799 trace_nfs4_mknod(dir
, &dentry
->d_name
, err
);
3800 err
= nfs4_handle_exception(NFS_SERVER(dir
), err
,
3802 } while (exception
.retry
);
3804 nfs4_label_release_security(label
);
3809 static int _nfs4_proc_statfs(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
3810 struct nfs_fsstat
*fsstat
)
3812 struct nfs4_statfs_arg args
= {
3814 .bitmask
= server
->attr_bitmask
,
3816 struct nfs4_statfs_res res
= {
3819 struct rpc_message msg
= {
3820 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_STATFS
],
3825 nfs_fattr_init(fsstat
->fattr
);
3826 return nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
3829 static int nfs4_proc_statfs(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fsstat
*fsstat
)
3831 struct nfs4_exception exception
= { };
3834 err
= nfs4_handle_exception(server
,
3835 _nfs4_proc_statfs(server
, fhandle
, fsstat
),
3837 } while (exception
.retry
);
3841 static int _nfs4_do_fsinfo(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
3842 struct nfs_fsinfo
*fsinfo
)
3844 struct nfs4_fsinfo_arg args
= {
3846 .bitmask
= server
->attr_bitmask
,
3848 struct nfs4_fsinfo_res res
= {
3851 struct rpc_message msg
= {
3852 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_FSINFO
],
3857 return nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
3860 static int nfs4_do_fsinfo(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fsinfo
*fsinfo
)
3862 struct nfs4_exception exception
= { };
3863 unsigned long now
= jiffies
;
3867 err
= _nfs4_do_fsinfo(server
, fhandle
, fsinfo
);
3868 trace_nfs4_fsinfo(server
, fhandle
, fsinfo
->fattr
, err
);
3870 struct nfs_client
*clp
= server
->nfs_client
;
3872 spin_lock(&clp
->cl_lock
);
3873 clp
->cl_lease_time
= fsinfo
->lease_time
* HZ
;
3874 clp
->cl_last_renewal
= now
;
3875 spin_unlock(&clp
->cl_lock
);
3878 err
= nfs4_handle_exception(server
, err
, &exception
);
3879 } while (exception
.retry
);
3883 static int nfs4_proc_fsinfo(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fsinfo
*fsinfo
)
3887 nfs_fattr_init(fsinfo
->fattr
);
3888 error
= nfs4_do_fsinfo(server
, fhandle
, fsinfo
);
3890 /* block layout checks this! */
3891 server
->pnfs_blksize
= fsinfo
->blksize
;
3892 set_pnfs_layoutdriver(server
, fhandle
, fsinfo
->layouttype
);
3898 static int _nfs4_proc_pathconf(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
3899 struct nfs_pathconf
*pathconf
)
3901 struct nfs4_pathconf_arg args
= {
3903 .bitmask
= server
->attr_bitmask
,
3905 struct nfs4_pathconf_res res
= {
3906 .pathconf
= pathconf
,
3908 struct rpc_message msg
= {
3909 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_PATHCONF
],
3914 /* None of the pathconf attributes are mandatory to implement */
3915 if ((args
.bitmask
[0] & nfs4_pathconf_bitmap
[0]) == 0) {
3916 memset(pathconf
, 0, sizeof(*pathconf
));
3920 nfs_fattr_init(pathconf
->fattr
);
3921 return nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
3924 static int nfs4_proc_pathconf(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
3925 struct nfs_pathconf
*pathconf
)
3927 struct nfs4_exception exception
= { };
3931 err
= nfs4_handle_exception(server
,
3932 _nfs4_proc_pathconf(server
, fhandle
, pathconf
),
3934 } while (exception
.retry
);
3938 int nfs4_set_rw_stateid(nfs4_stateid
*stateid
,
3939 const struct nfs_open_context
*ctx
,
3940 const struct nfs_lock_context
*l_ctx
,
3943 const struct nfs_lockowner
*lockowner
= NULL
;
3946 lockowner
= &l_ctx
->lockowner
;
3947 return nfs4_select_rw_stateid(stateid
, ctx
->state
, fmode
, lockowner
);
3949 EXPORT_SYMBOL_GPL(nfs4_set_rw_stateid
);
3951 static bool nfs4_stateid_is_current(nfs4_stateid
*stateid
,
3952 const struct nfs_open_context
*ctx
,
3953 const struct nfs_lock_context
*l_ctx
,
3956 nfs4_stateid current_stateid
;
3958 if (nfs4_set_rw_stateid(¤t_stateid
, ctx
, l_ctx
, fmode
))
3960 return nfs4_stateid_match(stateid
, ¤t_stateid
);
3963 static bool nfs4_error_stateid_expired(int err
)
3966 case -NFS4ERR_DELEG_REVOKED
:
3967 case -NFS4ERR_ADMIN_REVOKED
:
3968 case -NFS4ERR_BAD_STATEID
:
3969 case -NFS4ERR_STALE_STATEID
:
3970 case -NFS4ERR_OLD_STATEID
:
3971 case -NFS4ERR_OPENMODE
:
3972 case -NFS4ERR_EXPIRED
:
3978 void __nfs4_read_done_cb(struct nfs_read_data
*data
)
3980 nfs_invalidate_atime(data
->header
->inode
);
3983 static int nfs4_read_done_cb(struct rpc_task
*task
, struct nfs_read_data
*data
)
3985 struct nfs_server
*server
= NFS_SERVER(data
->header
->inode
);
3987 trace_nfs4_read(data
, task
->tk_status
);
3988 if (nfs4_async_handle_error(task
, server
, data
->args
.context
->state
) == -EAGAIN
) {
3989 rpc_restart_call_prepare(task
);
3993 __nfs4_read_done_cb(data
);
3994 if (task
->tk_status
> 0)
3995 renew_lease(server
, data
->timestamp
);
3999 static bool nfs4_read_stateid_changed(struct rpc_task
*task
,
4000 struct nfs_readargs
*args
)
4003 if (!nfs4_error_stateid_expired(task
->tk_status
) ||
4004 nfs4_stateid_is_current(&args
->stateid
,
4009 rpc_restart_call_prepare(task
);
4013 static int nfs4_read_done(struct rpc_task
*task
, struct nfs_read_data
*data
)
4016 dprintk("--> %s\n", __func__
);
4018 if (!nfs4_sequence_done(task
, &data
->res
.seq_res
))
4020 if (nfs4_read_stateid_changed(task
, &data
->args
))
4022 return data
->read_done_cb
? data
->read_done_cb(task
, data
) :
4023 nfs4_read_done_cb(task
, data
);
4026 static void nfs4_proc_read_setup(struct nfs_read_data
*data
, struct rpc_message
*msg
)
4028 data
->timestamp
= jiffies
;
4029 data
->read_done_cb
= nfs4_read_done_cb
;
4030 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_READ
];
4031 nfs4_init_sequence(&data
->args
.seq_args
, &data
->res
.seq_res
, 0);
4034 static int nfs4_proc_read_rpc_prepare(struct rpc_task
*task
, struct nfs_read_data
*data
)
4036 if (nfs4_setup_sequence(NFS_SERVER(data
->header
->inode
),
4037 &data
->args
.seq_args
,
4041 if (nfs4_set_rw_stateid(&data
->args
.stateid
, data
->args
.context
,
4042 data
->args
.lock_context
, FMODE_READ
) == -EIO
)
4044 if (unlikely(test_bit(NFS_CONTEXT_BAD
, &data
->args
.context
->flags
)))
4049 static int nfs4_write_done_cb(struct rpc_task
*task
, struct nfs_write_data
*data
)
4051 struct inode
*inode
= data
->header
->inode
;
4053 trace_nfs4_write(data
, task
->tk_status
);
4054 if (nfs4_async_handle_error(task
, NFS_SERVER(inode
), data
->args
.context
->state
) == -EAGAIN
) {
4055 rpc_restart_call_prepare(task
);
4058 if (task
->tk_status
>= 0) {
4059 renew_lease(NFS_SERVER(inode
), data
->timestamp
);
4060 nfs_post_op_update_inode_force_wcc(inode
, &data
->fattr
);
4065 static bool nfs4_write_stateid_changed(struct rpc_task
*task
,
4066 struct nfs_writeargs
*args
)
4069 if (!nfs4_error_stateid_expired(task
->tk_status
) ||
4070 nfs4_stateid_is_current(&args
->stateid
,
4075 rpc_restart_call_prepare(task
);
4079 static int nfs4_write_done(struct rpc_task
*task
, struct nfs_write_data
*data
)
4081 if (!nfs4_sequence_done(task
, &data
->res
.seq_res
))
4083 if (nfs4_write_stateid_changed(task
, &data
->args
))
4085 return data
->write_done_cb
? data
->write_done_cb(task
, data
) :
4086 nfs4_write_done_cb(task
, data
);
4090 bool nfs4_write_need_cache_consistency_data(const struct nfs_write_data
*data
)
4092 const struct nfs_pgio_header
*hdr
= data
->header
;
4094 /* Don't request attributes for pNFS or O_DIRECT writes */
4095 if (data
->ds_clp
!= NULL
|| hdr
->dreq
!= NULL
)
4097 /* Otherwise, request attributes if and only if we don't hold
4100 return nfs4_have_delegation(hdr
->inode
, FMODE_READ
) == 0;
4103 static void nfs4_proc_write_setup(struct nfs_write_data
*data
, struct rpc_message
*msg
)
4105 struct nfs_server
*server
= NFS_SERVER(data
->header
->inode
);
4107 if (!nfs4_write_need_cache_consistency_data(data
)) {
4108 data
->args
.bitmask
= NULL
;
4109 data
->res
.fattr
= NULL
;
4111 data
->args
.bitmask
= server
->cache_consistency_bitmask
;
4113 if (!data
->write_done_cb
)
4114 data
->write_done_cb
= nfs4_write_done_cb
;
4115 data
->res
.server
= server
;
4116 data
->timestamp
= jiffies
;
4118 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_WRITE
];
4119 nfs4_init_sequence(&data
->args
.seq_args
, &data
->res
.seq_res
, 1);
4122 static int nfs4_proc_write_rpc_prepare(struct rpc_task
*task
, struct nfs_write_data
*data
)
4124 if (nfs4_setup_sequence(NFS_SERVER(data
->header
->inode
),
4125 &data
->args
.seq_args
,
4129 if (nfs4_set_rw_stateid(&data
->args
.stateid
, data
->args
.context
,
4130 data
->args
.lock_context
, FMODE_WRITE
) == -EIO
)
4132 if (unlikely(test_bit(NFS_CONTEXT_BAD
, &data
->args
.context
->flags
)))
4137 static void nfs4_proc_commit_rpc_prepare(struct rpc_task
*task
, struct nfs_commit_data
*data
)
4139 nfs4_setup_sequence(NFS_SERVER(data
->inode
),
4140 &data
->args
.seq_args
,
4145 static int nfs4_commit_done_cb(struct rpc_task
*task
, struct nfs_commit_data
*data
)
4147 struct inode
*inode
= data
->inode
;
4149 trace_nfs4_commit(data
, task
->tk_status
);
4150 if (nfs4_async_handle_error(task
, NFS_SERVER(inode
), NULL
) == -EAGAIN
) {
4151 rpc_restart_call_prepare(task
);
4157 static int nfs4_commit_done(struct rpc_task
*task
, struct nfs_commit_data
*data
)
4159 if (!nfs4_sequence_done(task
, &data
->res
.seq_res
))
4161 return data
->commit_done_cb(task
, data
);
4164 static void nfs4_proc_commit_setup(struct nfs_commit_data
*data
, struct rpc_message
*msg
)
4166 struct nfs_server
*server
= NFS_SERVER(data
->inode
);
4168 if (data
->commit_done_cb
== NULL
)
4169 data
->commit_done_cb
= nfs4_commit_done_cb
;
4170 data
->res
.server
= server
;
4171 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_COMMIT
];
4172 nfs4_init_sequence(&data
->args
.seq_args
, &data
->res
.seq_res
, 1);
4175 struct nfs4_renewdata
{
4176 struct nfs_client
*client
;
4177 unsigned long timestamp
;
4181 * nfs4_proc_async_renew(): This is not one of the nfs_rpc_ops; it is a special
4182 * standalone procedure for queueing an asynchronous RENEW.
4184 static void nfs4_renew_release(void *calldata
)
4186 struct nfs4_renewdata
*data
= calldata
;
4187 struct nfs_client
*clp
= data
->client
;
4189 if (atomic_read(&clp
->cl_count
) > 1)
4190 nfs4_schedule_state_renewal(clp
);
4191 nfs_put_client(clp
);
4195 static void nfs4_renew_done(struct rpc_task
*task
, void *calldata
)
4197 struct nfs4_renewdata
*data
= calldata
;
4198 struct nfs_client
*clp
= data
->client
;
4199 unsigned long timestamp
= data
->timestamp
;
4201 trace_nfs4_renew_async(clp
, task
->tk_status
);
4202 if (task
->tk_status
< 0) {
4203 /* Unless we're shutting down, schedule state recovery! */
4204 if (test_bit(NFS_CS_RENEWD
, &clp
->cl_res_state
) == 0)
4206 if (task
->tk_status
!= NFS4ERR_CB_PATH_DOWN
) {
4207 nfs4_schedule_lease_recovery(clp
);
4210 nfs4_schedule_path_down_recovery(clp
);
4212 do_renew_lease(clp
, timestamp
);
4215 static const struct rpc_call_ops nfs4_renew_ops
= {
4216 .rpc_call_done
= nfs4_renew_done
,
4217 .rpc_release
= nfs4_renew_release
,
4220 static int nfs4_proc_async_renew(struct nfs_client
*clp
, struct rpc_cred
*cred
, unsigned renew_flags
)
4222 struct rpc_message msg
= {
4223 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RENEW
],
4227 struct nfs4_renewdata
*data
;
4229 if (renew_flags
== 0)
4231 if (!atomic_inc_not_zero(&clp
->cl_count
))
4233 data
= kmalloc(sizeof(*data
), GFP_NOFS
);
4237 data
->timestamp
= jiffies
;
4238 return rpc_call_async(clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
,
4239 &nfs4_renew_ops
, data
);
4242 static int nfs4_proc_renew(struct nfs_client
*clp
, struct rpc_cred
*cred
)
4244 struct rpc_message msg
= {
4245 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RENEW
],
4249 unsigned long now
= jiffies
;
4252 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
4255 do_renew_lease(clp
, now
);
4259 static inline int nfs4_server_supports_acls(struct nfs_server
*server
)
4261 return (server
->caps
& NFS_CAP_ACLS
)
4262 && (server
->acl_bitmask
& ACL4_SUPPORT_ALLOW_ACL
)
4263 && (server
->acl_bitmask
& ACL4_SUPPORT_DENY_ACL
);
4266 /* Assuming that XATTR_SIZE_MAX is a multiple of PAGE_SIZE, and that
4267 * it's OK to put sizeof(void) * (XATTR_SIZE_MAX/PAGE_SIZE) bytes on
4270 #define NFS4ACL_MAXPAGES DIV_ROUND_UP(XATTR_SIZE_MAX, PAGE_SIZE)
4272 static int buf_to_pages_noslab(const void *buf
, size_t buflen
,
4273 struct page
**pages
, unsigned int *pgbase
)
4275 struct page
*newpage
, **spages
;
4281 len
= min_t(size_t, PAGE_SIZE
, buflen
);
4282 newpage
= alloc_page(GFP_KERNEL
);
4284 if (newpage
== NULL
)
4286 memcpy(page_address(newpage
), buf
, len
);
4291 } while (buflen
!= 0);
4297 __free_page(spages
[rc
-1]);
4301 struct nfs4_cached_acl
{
4307 static void nfs4_set_cached_acl(struct inode
*inode
, struct nfs4_cached_acl
*acl
)
4309 struct nfs_inode
*nfsi
= NFS_I(inode
);
4311 spin_lock(&inode
->i_lock
);
4312 kfree(nfsi
->nfs4_acl
);
4313 nfsi
->nfs4_acl
= acl
;
4314 spin_unlock(&inode
->i_lock
);
4317 static void nfs4_zap_acl_attr(struct inode
*inode
)
4319 nfs4_set_cached_acl(inode
, NULL
);
4322 static inline ssize_t
nfs4_read_cached_acl(struct inode
*inode
, char *buf
, size_t buflen
)
4324 struct nfs_inode
*nfsi
= NFS_I(inode
);
4325 struct nfs4_cached_acl
*acl
;
4328 spin_lock(&inode
->i_lock
);
4329 acl
= nfsi
->nfs4_acl
;
4332 if (buf
== NULL
) /* user is just asking for length */
4334 if (acl
->cached
== 0)
4336 ret
= -ERANGE
; /* see getxattr(2) man page */
4337 if (acl
->len
> buflen
)
4339 memcpy(buf
, acl
->data
, acl
->len
);
4343 spin_unlock(&inode
->i_lock
);
4347 static void nfs4_write_cached_acl(struct inode
*inode
, struct page
**pages
, size_t pgbase
, size_t acl_len
)
4349 struct nfs4_cached_acl
*acl
;
4350 size_t buflen
= sizeof(*acl
) + acl_len
;
4352 if (buflen
<= PAGE_SIZE
) {
4353 acl
= kmalloc(buflen
, GFP_KERNEL
);
4357 _copy_from_pages(acl
->data
, pages
, pgbase
, acl_len
);
4359 acl
= kmalloc(sizeof(*acl
), GFP_KERNEL
);
4366 nfs4_set_cached_acl(inode
, acl
);
4370 * The getxattr API returns the required buffer length when called with a
4371 * NULL buf. The NFSv4 acl tool then calls getxattr again after allocating
4372 * the required buf. On a NULL buf, we send a page of data to the server
4373 * guessing that the ACL request can be serviced by a page. If so, we cache
4374 * up to the page of ACL data, and the 2nd call to getxattr is serviced by
4375 * the cache. If not so, we throw away the page, and cache the required
4376 * length. The next getxattr call will then produce another round trip to
4377 * the server, this time with the input buf of the required size.
4379 static ssize_t
__nfs4_get_acl_uncached(struct inode
*inode
, void *buf
, size_t buflen
)
4381 struct page
*pages
[NFS4ACL_MAXPAGES
] = {NULL
, };
4382 struct nfs_getaclargs args
= {
4383 .fh
= NFS_FH(inode
),
4387 struct nfs_getaclres res
= {
4390 struct rpc_message msg
= {
4391 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GETACL
],
4395 unsigned int npages
= DIV_ROUND_UP(buflen
, PAGE_SIZE
);
4396 int ret
= -ENOMEM
, i
;
4398 /* As long as we're doing a round trip to the server anyway,
4399 * let's be prepared for a page of acl data. */
4402 if (npages
> ARRAY_SIZE(pages
))
4405 for (i
= 0; i
< npages
; i
++) {
4406 pages
[i
] = alloc_page(GFP_KERNEL
);
4411 /* for decoding across pages */
4412 res
.acl_scratch
= alloc_page(GFP_KERNEL
);
4413 if (!res
.acl_scratch
)
4416 args
.acl_len
= npages
* PAGE_SIZE
;
4417 args
.acl_pgbase
= 0;
4419 dprintk("%s buf %p buflen %zu npages %d args.acl_len %zu\n",
4420 __func__
, buf
, buflen
, npages
, args
.acl_len
);
4421 ret
= nfs4_call_sync(NFS_SERVER(inode
)->client
, NFS_SERVER(inode
),
4422 &msg
, &args
.seq_args
, &res
.seq_res
, 0);
4426 /* Handle the case where the passed-in buffer is too short */
4427 if (res
.acl_flags
& NFS4_ACL_TRUNC
) {
4428 /* Did the user only issue a request for the acl length? */
4434 nfs4_write_cached_acl(inode
, pages
, res
.acl_data_offset
, res
.acl_len
);
4436 if (res
.acl_len
> buflen
) {
4440 _copy_from_pages(buf
, pages
, res
.acl_data_offset
, res
.acl_len
);
4445 for (i
= 0; i
< npages
; i
++)
4447 __free_page(pages
[i
]);
4448 if (res
.acl_scratch
)
4449 __free_page(res
.acl_scratch
);
4453 static ssize_t
nfs4_get_acl_uncached(struct inode
*inode
, void *buf
, size_t buflen
)
4455 struct nfs4_exception exception
= { };
4458 ret
= __nfs4_get_acl_uncached(inode
, buf
, buflen
);
4459 trace_nfs4_get_acl(inode
, ret
);
4462 ret
= nfs4_handle_exception(NFS_SERVER(inode
), ret
, &exception
);
4463 } while (exception
.retry
);
4467 static ssize_t
nfs4_proc_get_acl(struct inode
*inode
, void *buf
, size_t buflen
)
4469 struct nfs_server
*server
= NFS_SERVER(inode
);
4472 if (!nfs4_server_supports_acls(server
))
4474 ret
= nfs_revalidate_inode(server
, inode
);
4477 if (NFS_I(inode
)->cache_validity
& NFS_INO_INVALID_ACL
)
4478 nfs_zap_acl_cache(inode
);
4479 ret
= nfs4_read_cached_acl(inode
, buf
, buflen
);
4481 /* -ENOENT is returned if there is no ACL or if there is an ACL
4482 * but no cached acl data, just the acl length */
4484 return nfs4_get_acl_uncached(inode
, buf
, buflen
);
4487 static int __nfs4_proc_set_acl(struct inode
*inode
, const void *buf
, size_t buflen
)
4489 struct nfs_server
*server
= NFS_SERVER(inode
);
4490 struct page
*pages
[NFS4ACL_MAXPAGES
];
4491 struct nfs_setaclargs arg
= {
4492 .fh
= NFS_FH(inode
),
4496 struct nfs_setaclres res
;
4497 struct rpc_message msg
= {
4498 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETACL
],
4502 unsigned int npages
= DIV_ROUND_UP(buflen
, PAGE_SIZE
);
4505 if (!nfs4_server_supports_acls(server
))
4507 if (npages
> ARRAY_SIZE(pages
))
4509 i
= buf_to_pages_noslab(buf
, buflen
, arg
.acl_pages
, &arg
.acl_pgbase
);
4512 nfs4_inode_return_delegation(inode
);
4513 ret
= nfs4_call_sync(server
->client
, server
, &msg
, &arg
.seq_args
, &res
.seq_res
, 1);
4516 * Free each page after tx, so the only ref left is
4517 * held by the network stack
4520 put_page(pages
[i
-1]);
4523 * Acl update can result in inode attribute update.
4524 * so mark the attribute cache invalid.
4526 spin_lock(&inode
->i_lock
);
4527 NFS_I(inode
)->cache_validity
|= NFS_INO_INVALID_ATTR
;
4528 spin_unlock(&inode
->i_lock
);
4529 nfs_access_zap_cache(inode
);
4530 nfs_zap_acl_cache(inode
);
4534 static int nfs4_proc_set_acl(struct inode
*inode
, const void *buf
, size_t buflen
)
4536 struct nfs4_exception exception
= { };
4539 err
= __nfs4_proc_set_acl(inode
, buf
, buflen
);
4540 trace_nfs4_set_acl(inode
, err
);
4541 err
= nfs4_handle_exception(NFS_SERVER(inode
), err
,
4543 } while (exception
.retry
);
4547 #ifdef CONFIG_NFS_V4_SECURITY_LABEL
4548 static int _nfs4_get_security_label(struct inode
*inode
, void *buf
,
4551 struct nfs_server
*server
= NFS_SERVER(inode
);
4552 struct nfs_fattr fattr
;
4553 struct nfs4_label label
= {0, 0, buflen
, buf
};
4555 u32 bitmask
[3] = { 0, 0, FATTR4_WORD2_SECURITY_LABEL
};
4556 struct nfs4_getattr_arg args
= {
4557 .fh
= NFS_FH(inode
),
4560 struct nfs4_getattr_res res
= {
4565 struct rpc_message msg
= {
4566 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GETATTR
],
4572 nfs_fattr_init(&fattr
);
4574 ret
= rpc_call_sync(server
->client
, &msg
, 0);
4577 if (!(fattr
.valid
& NFS_ATTR_FATTR_V4_SECURITY_LABEL
))
4579 if (buflen
< label
.len
)
4584 static int nfs4_get_security_label(struct inode
*inode
, void *buf
,
4587 struct nfs4_exception exception
= { };
4590 if (!nfs_server_capable(inode
, NFS_CAP_SECURITY_LABEL
))
4594 err
= _nfs4_get_security_label(inode
, buf
, buflen
);
4595 trace_nfs4_get_security_label(inode
, err
);
4596 err
= nfs4_handle_exception(NFS_SERVER(inode
), err
,
4598 } while (exception
.retry
);
4602 static int _nfs4_do_set_security_label(struct inode
*inode
,
4603 struct nfs4_label
*ilabel
,
4604 struct nfs_fattr
*fattr
,
4605 struct nfs4_label
*olabel
)
4608 struct iattr sattr
= {0};
4609 struct nfs_server
*server
= NFS_SERVER(inode
);
4610 const u32 bitmask
[3] = { 0, 0, FATTR4_WORD2_SECURITY_LABEL
};
4611 struct nfs_setattrargs args
= {
4612 .fh
= NFS_FH(inode
),
4618 struct nfs_setattrres res
= {
4623 struct rpc_message msg
= {
4624 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETATTR
],
4630 nfs4_stateid_copy(&args
.stateid
, &zero_stateid
);
4632 status
= rpc_call_sync(server
->client
, &msg
, 0);
4634 dprintk("%s failed: %d\n", __func__
, status
);
4639 static int nfs4_do_set_security_label(struct inode
*inode
,
4640 struct nfs4_label
*ilabel
,
4641 struct nfs_fattr
*fattr
,
4642 struct nfs4_label
*olabel
)
4644 struct nfs4_exception exception
= { };
4648 err
= _nfs4_do_set_security_label(inode
, ilabel
,
4650 trace_nfs4_set_security_label(inode
, err
);
4651 err
= nfs4_handle_exception(NFS_SERVER(inode
), err
,
4653 } while (exception
.retry
);
4658 nfs4_set_security_label(struct dentry
*dentry
, const void *buf
, size_t buflen
)
4660 struct nfs4_label ilabel
, *olabel
= NULL
;
4661 struct nfs_fattr fattr
;
4662 struct rpc_cred
*cred
;
4663 struct inode
*inode
= dentry
->d_inode
;
4666 if (!nfs_server_capable(inode
, NFS_CAP_SECURITY_LABEL
))
4669 nfs_fattr_init(&fattr
);
4673 ilabel
.label
= (char *)buf
;
4674 ilabel
.len
= buflen
;
4676 cred
= rpc_lookup_cred();
4678 return PTR_ERR(cred
);
4680 olabel
= nfs4_label_alloc(NFS_SERVER(inode
), GFP_KERNEL
);
4681 if (IS_ERR(olabel
)) {
4682 status
= -PTR_ERR(olabel
);
4686 status
= nfs4_do_set_security_label(inode
, &ilabel
, &fattr
, olabel
);
4688 nfs_setsecurity(inode
, &fattr
, olabel
);
4690 nfs4_label_free(olabel
);
4695 #endif /* CONFIG_NFS_V4_SECURITY_LABEL */
4699 nfs4_async_handle_error(struct rpc_task
*task
, const struct nfs_server
*server
, struct nfs4_state
*state
)
4701 struct nfs_client
*clp
= server
->nfs_client
;
4703 if (task
->tk_status
>= 0)
4705 switch(task
->tk_status
) {
4706 case -NFS4ERR_DELEG_REVOKED
:
4707 case -NFS4ERR_ADMIN_REVOKED
:
4708 case -NFS4ERR_BAD_STATEID
:
4711 nfs_remove_bad_delegation(state
->inode
);
4712 case -NFS4ERR_OPENMODE
:
4715 if (nfs4_schedule_stateid_recovery(server
, state
) < 0)
4716 goto stateid_invalid
;
4717 goto wait_on_recovery
;
4718 case -NFS4ERR_EXPIRED
:
4719 if (state
!= NULL
) {
4720 if (nfs4_schedule_stateid_recovery(server
, state
) < 0)
4721 goto stateid_invalid
;
4723 case -NFS4ERR_STALE_STATEID
:
4724 case -NFS4ERR_STALE_CLIENTID
:
4725 nfs4_schedule_lease_recovery(clp
);
4726 goto wait_on_recovery
;
4727 #if defined(CONFIG_NFS_V4_1)
4728 case -NFS4ERR_BADSESSION
:
4729 case -NFS4ERR_BADSLOT
:
4730 case -NFS4ERR_BAD_HIGH_SLOT
:
4731 case -NFS4ERR_DEADSESSION
:
4732 case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION
:
4733 case -NFS4ERR_SEQ_FALSE_RETRY
:
4734 case -NFS4ERR_SEQ_MISORDERED
:
4735 dprintk("%s ERROR %d, Reset session\n", __func__
,
4737 nfs4_schedule_session_recovery(clp
->cl_session
, task
->tk_status
);
4738 task
->tk_status
= 0;
4740 #endif /* CONFIG_NFS_V4_1 */
4741 case -NFS4ERR_DELAY
:
4742 nfs_inc_server_stats(server
, NFSIOS_DELAY
);
4743 case -NFS4ERR_GRACE
:
4744 rpc_delay(task
, NFS4_POLL_RETRY_MAX
);
4745 task
->tk_status
= 0;
4747 case -NFS4ERR_RETRY_UNCACHED_REP
:
4748 case -NFS4ERR_OLD_STATEID
:
4749 task
->tk_status
= 0;
4752 task
->tk_status
= nfs4_map_errors(task
->tk_status
);
4755 task
->tk_status
= -EIO
;
4758 rpc_sleep_on(&clp
->cl_rpcwaitq
, task
, NULL
);
4759 if (test_bit(NFS4CLNT_MANAGER_RUNNING
, &clp
->cl_state
) == 0)
4760 rpc_wake_up_queued_task(&clp
->cl_rpcwaitq
, task
);
4761 task
->tk_status
= 0;
4765 static void nfs4_init_boot_verifier(const struct nfs_client
*clp
,
4766 nfs4_verifier
*bootverf
)
4770 if (test_bit(NFS4CLNT_PURGE_STATE
, &clp
->cl_state
)) {
4771 /* An impossible timestamp guarantees this value
4772 * will never match a generated boot time. */
4774 verf
[1] = cpu_to_be32(NSEC_PER_SEC
+ 1);
4776 struct nfs_net
*nn
= net_generic(clp
->cl_net
, nfs_net_id
);
4777 verf
[0] = cpu_to_be32(nn
->boot_time
.tv_sec
);
4778 verf
[1] = cpu_to_be32(nn
->boot_time
.tv_nsec
);
4780 memcpy(bootverf
->data
, verf
, sizeof(bootverf
->data
));
4784 nfs4_init_nonuniform_client_string(const struct nfs_client
*clp
,
4785 char *buf
, size_t len
)
4787 unsigned int result
;
4790 result
= scnprintf(buf
, len
, "Linux NFSv4.0 %s/%s %s",
4792 rpc_peeraddr2str(clp
->cl_rpcclient
,
4794 rpc_peeraddr2str(clp
->cl_rpcclient
,
4795 RPC_DISPLAY_PROTO
));
4801 nfs4_init_uniform_client_string(const struct nfs_client
*clp
,
4802 char *buf
, size_t len
)
4804 const char *nodename
= clp
->cl_rpcclient
->cl_nodename
;
4806 if (nfs4_client_id_uniquifier
[0] != '\0')
4807 return scnprintf(buf
, len
, "Linux NFSv%u.%u %s/%s",
4808 clp
->rpc_ops
->version
,
4809 clp
->cl_minorversion
,
4810 nfs4_client_id_uniquifier
,
4812 return scnprintf(buf
, len
, "Linux NFSv%u.%u %s",
4813 clp
->rpc_ops
->version
, clp
->cl_minorversion
,
4818 * nfs4_proc_setclientid - Negotiate client ID
4819 * @clp: state data structure
4820 * @program: RPC program for NFSv4 callback service
4821 * @port: IP port number for NFS4 callback service
4822 * @cred: RPC credential to use for this call
4823 * @res: where to place the result
4825 * Returns zero, a negative errno, or a negative NFS4ERR status code.
4827 int nfs4_proc_setclientid(struct nfs_client
*clp
, u32 program
,
4828 unsigned short port
, struct rpc_cred
*cred
,
4829 struct nfs4_setclientid_res
*res
)
4831 nfs4_verifier sc_verifier
;
4832 struct nfs4_setclientid setclientid
= {
4833 .sc_verifier
= &sc_verifier
,
4835 .sc_cb_ident
= clp
->cl_cb_ident
,
4837 struct rpc_message msg
= {
4838 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETCLIENTID
],
4839 .rpc_argp
= &setclientid
,
4845 /* nfs_client_id4 */
4846 nfs4_init_boot_verifier(clp
, &sc_verifier
);
4847 if (test_bit(NFS_CS_MIGRATION
, &clp
->cl_flags
))
4848 setclientid
.sc_name_len
=
4849 nfs4_init_uniform_client_string(clp
,
4850 setclientid
.sc_name
,
4851 sizeof(setclientid
.sc_name
));
4853 setclientid
.sc_name_len
=
4854 nfs4_init_nonuniform_client_string(clp
,
4855 setclientid
.sc_name
,
4856 sizeof(setclientid
.sc_name
));
4859 setclientid
.sc_netid_len
= scnprintf(setclientid
.sc_netid
,
4860 sizeof(setclientid
.sc_netid
), "%s",
4861 rpc_peeraddr2str(clp
->cl_rpcclient
,
4862 RPC_DISPLAY_NETID
));
4864 setclientid
.sc_uaddr_len
= scnprintf(setclientid
.sc_uaddr
,
4865 sizeof(setclientid
.sc_uaddr
), "%s.%u.%u",
4866 clp
->cl_ipaddr
, port
>> 8, port
& 255);
4868 dprintk("NFS call setclientid auth=%s, '%.*s'\n",
4869 clp
->cl_rpcclient
->cl_auth
->au_ops
->au_name
,
4870 setclientid
.sc_name_len
, setclientid
.sc_name
);
4871 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
4872 trace_nfs4_setclientid(clp
, status
);
4873 dprintk("NFS reply setclientid: %d\n", status
);
4878 * nfs4_proc_setclientid_confirm - Confirm client ID
4879 * @clp: state data structure
4880 * @res: result of a previous SETCLIENTID
4881 * @cred: RPC credential to use for this call
4883 * Returns zero, a negative errno, or a negative NFS4ERR status code.
4885 int nfs4_proc_setclientid_confirm(struct nfs_client
*clp
,
4886 struct nfs4_setclientid_res
*arg
,
4887 struct rpc_cred
*cred
)
4889 struct rpc_message msg
= {
4890 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETCLIENTID_CONFIRM
],
4896 dprintk("NFS call setclientid_confirm auth=%s, (client ID %llx)\n",
4897 clp
->cl_rpcclient
->cl_auth
->au_ops
->au_name
,
4899 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
4900 trace_nfs4_setclientid_confirm(clp
, status
);
4901 dprintk("NFS reply setclientid_confirm: %d\n", status
);
4905 struct nfs4_delegreturndata
{
4906 struct nfs4_delegreturnargs args
;
4907 struct nfs4_delegreturnres res
;
4909 nfs4_stateid stateid
;
4910 unsigned long timestamp
;
4911 struct nfs_fattr fattr
;
4915 static void nfs4_delegreturn_done(struct rpc_task
*task
, void *calldata
)
4917 struct nfs4_delegreturndata
*data
= calldata
;
4919 if (!nfs4_sequence_done(task
, &data
->res
.seq_res
))
4922 trace_nfs4_delegreturn_exit(&data
->args
, &data
->res
, task
->tk_status
);
4923 switch (task
->tk_status
) {
4924 case -NFS4ERR_STALE_STATEID
:
4925 case -NFS4ERR_EXPIRED
:
4927 renew_lease(data
->res
.server
, data
->timestamp
);
4930 if (nfs4_async_handle_error(task
, data
->res
.server
, NULL
) ==
4932 rpc_restart_call_prepare(task
);
4936 data
->rpc_status
= task
->tk_status
;
4939 static void nfs4_delegreturn_release(void *calldata
)
4944 static void nfs4_delegreturn_prepare(struct rpc_task
*task
, void *data
)
4946 struct nfs4_delegreturndata
*d_data
;
4948 d_data
= (struct nfs4_delegreturndata
*)data
;
4950 nfs4_setup_sequence(d_data
->res
.server
,
4951 &d_data
->args
.seq_args
,
4952 &d_data
->res
.seq_res
,
4956 static const struct rpc_call_ops nfs4_delegreturn_ops
= {
4957 .rpc_call_prepare
= nfs4_delegreturn_prepare
,
4958 .rpc_call_done
= nfs4_delegreturn_done
,
4959 .rpc_release
= nfs4_delegreturn_release
,
4962 static int _nfs4_proc_delegreturn(struct inode
*inode
, struct rpc_cred
*cred
, const nfs4_stateid
*stateid
, int issync
)
4964 struct nfs4_delegreturndata
*data
;
4965 struct nfs_server
*server
= NFS_SERVER(inode
);
4966 struct rpc_task
*task
;
4967 struct rpc_message msg
= {
4968 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_DELEGRETURN
],
4971 struct rpc_task_setup task_setup_data
= {
4972 .rpc_client
= server
->client
,
4973 .rpc_message
= &msg
,
4974 .callback_ops
= &nfs4_delegreturn_ops
,
4975 .flags
= RPC_TASK_ASYNC
,
4979 data
= kzalloc(sizeof(*data
), GFP_NOFS
);
4982 nfs4_init_sequence(&data
->args
.seq_args
, &data
->res
.seq_res
, 1);
4983 data
->args
.fhandle
= &data
->fh
;
4984 data
->args
.stateid
= &data
->stateid
;
4985 data
->args
.bitmask
= server
->cache_consistency_bitmask
;
4986 nfs_copy_fh(&data
->fh
, NFS_FH(inode
));
4987 nfs4_stateid_copy(&data
->stateid
, stateid
);
4988 data
->res
.fattr
= &data
->fattr
;
4989 data
->res
.server
= server
;
4990 nfs_fattr_init(data
->res
.fattr
);
4991 data
->timestamp
= jiffies
;
4992 data
->rpc_status
= 0;
4994 task_setup_data
.callback_data
= data
;
4995 msg
.rpc_argp
= &data
->args
;
4996 msg
.rpc_resp
= &data
->res
;
4997 task
= rpc_run_task(&task_setup_data
);
4999 return PTR_ERR(task
);
5002 status
= nfs4_wait_for_completion_rpc_task(task
);
5005 status
= data
->rpc_status
;
5007 nfs_post_op_update_inode_force_wcc(inode
, &data
->fattr
);
5009 nfs_refresh_inode(inode
, &data
->fattr
);
5015 int nfs4_proc_delegreturn(struct inode
*inode
, struct rpc_cred
*cred
, const nfs4_stateid
*stateid
, int issync
)
5017 struct nfs_server
*server
= NFS_SERVER(inode
);
5018 struct nfs4_exception exception
= { };
5021 err
= _nfs4_proc_delegreturn(inode
, cred
, stateid
, issync
);
5022 trace_nfs4_delegreturn(inode
, err
);
5024 case -NFS4ERR_STALE_STATEID
:
5025 case -NFS4ERR_EXPIRED
:
5029 err
= nfs4_handle_exception(server
, err
, &exception
);
5030 } while (exception
.retry
);
5034 #define NFS4_LOCK_MINTIMEOUT (1 * HZ)
5035 #define NFS4_LOCK_MAXTIMEOUT (30 * HZ)
5038 * sleep, with exponential backoff, and retry the LOCK operation.
5040 static unsigned long
5041 nfs4_set_lock_task_retry(unsigned long timeout
)
5043 freezable_schedule_timeout_killable_unsafe(timeout
);
5045 if (timeout
> NFS4_LOCK_MAXTIMEOUT
)
5046 return NFS4_LOCK_MAXTIMEOUT
;
5050 static int _nfs4_proc_getlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
5052 struct inode
*inode
= state
->inode
;
5053 struct nfs_server
*server
= NFS_SERVER(inode
);
5054 struct nfs_client
*clp
= server
->nfs_client
;
5055 struct nfs_lockt_args arg
= {
5056 .fh
= NFS_FH(inode
),
5059 struct nfs_lockt_res res
= {
5062 struct rpc_message msg
= {
5063 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOCKT
],
5066 .rpc_cred
= state
->owner
->so_cred
,
5068 struct nfs4_lock_state
*lsp
;
5071 arg
.lock_owner
.clientid
= clp
->cl_clientid
;
5072 status
= nfs4_set_lock_state(state
, request
);
5075 lsp
= request
->fl_u
.nfs4_fl
.owner
;
5076 arg
.lock_owner
.id
= lsp
->ls_seqid
.owner_id
;
5077 arg
.lock_owner
.s_dev
= server
->s_dev
;
5078 status
= nfs4_call_sync(server
->client
, server
, &msg
, &arg
.seq_args
, &res
.seq_res
, 1);
5081 request
->fl_type
= F_UNLCK
;
5083 case -NFS4ERR_DENIED
:
5086 request
->fl_ops
->fl_release_private(request
);
5091 static int nfs4_proc_getlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
5093 struct nfs4_exception exception
= { };
5097 err
= _nfs4_proc_getlk(state
, cmd
, request
);
5098 trace_nfs4_get_lock(request
, state
, cmd
, err
);
5099 err
= nfs4_handle_exception(NFS_SERVER(state
->inode
), err
,
5101 } while (exception
.retry
);
5105 static int do_vfs_lock(struct file
*file
, struct file_lock
*fl
)
5108 switch (fl
->fl_flags
& (FL_POSIX
|FL_FLOCK
)) {
5110 res
= posix_lock_file_wait(file
, fl
);
5113 res
= flock_lock_file_wait(file
, fl
);
5121 struct nfs4_unlockdata
{
5122 struct nfs_locku_args arg
;
5123 struct nfs_locku_res res
;
5124 struct nfs4_lock_state
*lsp
;
5125 struct nfs_open_context
*ctx
;
5126 struct file_lock fl
;
5127 const struct nfs_server
*server
;
5128 unsigned long timestamp
;
5131 static struct nfs4_unlockdata
*nfs4_alloc_unlockdata(struct file_lock
*fl
,
5132 struct nfs_open_context
*ctx
,
5133 struct nfs4_lock_state
*lsp
,
5134 struct nfs_seqid
*seqid
)
5136 struct nfs4_unlockdata
*p
;
5137 struct inode
*inode
= lsp
->ls_state
->inode
;
5139 p
= kzalloc(sizeof(*p
), GFP_NOFS
);
5142 p
->arg
.fh
= NFS_FH(inode
);
5144 p
->arg
.seqid
= seqid
;
5145 p
->res
.seqid
= seqid
;
5146 p
->arg
.stateid
= &lsp
->ls_stateid
;
5148 atomic_inc(&lsp
->ls_count
);
5149 /* Ensure we don't close file until we're done freeing locks! */
5150 p
->ctx
= get_nfs_open_context(ctx
);
5151 memcpy(&p
->fl
, fl
, sizeof(p
->fl
));
5152 p
->server
= NFS_SERVER(inode
);
5156 static void nfs4_locku_release_calldata(void *data
)
5158 struct nfs4_unlockdata
*calldata
= data
;
5159 nfs_free_seqid(calldata
->arg
.seqid
);
5160 nfs4_put_lock_state(calldata
->lsp
);
5161 put_nfs_open_context(calldata
->ctx
);
5165 static void nfs4_locku_done(struct rpc_task
*task
, void *data
)
5167 struct nfs4_unlockdata
*calldata
= data
;
5169 if (!nfs4_sequence_done(task
, &calldata
->res
.seq_res
))
5171 switch (task
->tk_status
) {
5173 nfs4_stateid_copy(&calldata
->lsp
->ls_stateid
,
5174 &calldata
->res
.stateid
);
5175 renew_lease(calldata
->server
, calldata
->timestamp
);
5177 case -NFS4ERR_BAD_STATEID
:
5178 case -NFS4ERR_OLD_STATEID
:
5179 case -NFS4ERR_STALE_STATEID
:
5180 case -NFS4ERR_EXPIRED
:
5183 if (nfs4_async_handle_error(task
, calldata
->server
, NULL
) == -EAGAIN
)
5184 rpc_restart_call_prepare(task
);
5186 nfs_release_seqid(calldata
->arg
.seqid
);
5189 static void nfs4_locku_prepare(struct rpc_task
*task
, void *data
)
5191 struct nfs4_unlockdata
*calldata
= data
;
5193 if (nfs_wait_on_sequence(calldata
->arg
.seqid
, task
) != 0)
5195 if (test_bit(NFS_LOCK_INITIALIZED
, &calldata
->lsp
->ls_flags
) == 0) {
5196 /* Note: exit _without_ running nfs4_locku_done */
5199 calldata
->timestamp
= jiffies
;
5200 if (nfs4_setup_sequence(calldata
->server
,
5201 &calldata
->arg
.seq_args
,
5202 &calldata
->res
.seq_res
,
5204 nfs_release_seqid(calldata
->arg
.seqid
);
5207 task
->tk_action
= NULL
;
5209 nfs4_sequence_done(task
, &calldata
->res
.seq_res
);
5212 static const struct rpc_call_ops nfs4_locku_ops
= {
5213 .rpc_call_prepare
= nfs4_locku_prepare
,
5214 .rpc_call_done
= nfs4_locku_done
,
5215 .rpc_release
= nfs4_locku_release_calldata
,
5218 static struct rpc_task
*nfs4_do_unlck(struct file_lock
*fl
,
5219 struct nfs_open_context
*ctx
,
5220 struct nfs4_lock_state
*lsp
,
5221 struct nfs_seqid
*seqid
)
5223 struct nfs4_unlockdata
*data
;
5224 struct rpc_message msg
= {
5225 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOCKU
],
5226 .rpc_cred
= ctx
->cred
,
5228 struct rpc_task_setup task_setup_data
= {
5229 .rpc_client
= NFS_CLIENT(lsp
->ls_state
->inode
),
5230 .rpc_message
= &msg
,
5231 .callback_ops
= &nfs4_locku_ops
,
5232 .workqueue
= nfsiod_workqueue
,
5233 .flags
= RPC_TASK_ASYNC
,
5236 nfs4_state_protect(NFS_SERVER(lsp
->ls_state
->inode
)->nfs_client
,
5237 NFS_SP4_MACH_CRED_CLEANUP
, &task_setup_data
.rpc_client
, &msg
);
5239 /* Ensure this is an unlock - when canceling a lock, the
5240 * canceled lock is passed in, and it won't be an unlock.
5242 fl
->fl_type
= F_UNLCK
;
5244 data
= nfs4_alloc_unlockdata(fl
, ctx
, lsp
, seqid
);
5246 nfs_free_seqid(seqid
);
5247 return ERR_PTR(-ENOMEM
);
5250 nfs4_init_sequence(&data
->arg
.seq_args
, &data
->res
.seq_res
, 1);
5251 msg
.rpc_argp
= &data
->arg
;
5252 msg
.rpc_resp
= &data
->res
;
5253 task_setup_data
.callback_data
= data
;
5254 return rpc_run_task(&task_setup_data
);
5257 static int nfs4_proc_unlck(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
5259 struct inode
*inode
= state
->inode
;
5260 struct nfs4_state_owner
*sp
= state
->owner
;
5261 struct nfs_inode
*nfsi
= NFS_I(inode
);
5262 struct nfs_seqid
*seqid
;
5263 struct nfs4_lock_state
*lsp
;
5264 struct rpc_task
*task
;
5266 unsigned char fl_flags
= request
->fl_flags
;
5268 status
= nfs4_set_lock_state(state
, request
);
5269 /* Unlock _before_ we do the RPC call */
5270 request
->fl_flags
|= FL_EXISTS
;
5271 /* Exclude nfs_delegation_claim_locks() */
5272 mutex_lock(&sp
->so_delegreturn_mutex
);
5273 /* Exclude nfs4_reclaim_open_stateid() - note nesting! */
5274 down_read(&nfsi
->rwsem
);
5275 if (do_vfs_lock(request
->fl_file
, request
) == -ENOENT
) {
5276 up_read(&nfsi
->rwsem
);
5277 mutex_unlock(&sp
->so_delegreturn_mutex
);
5280 up_read(&nfsi
->rwsem
);
5281 mutex_unlock(&sp
->so_delegreturn_mutex
);
5284 /* Is this a delegated lock? */
5285 lsp
= request
->fl_u
.nfs4_fl
.owner
;
5286 if (test_bit(NFS_LOCK_INITIALIZED
, &lsp
->ls_flags
) == 0)
5288 seqid
= nfs_alloc_seqid(&lsp
->ls_seqid
, GFP_KERNEL
);
5292 task
= nfs4_do_unlck(request
, nfs_file_open_context(request
->fl_file
), lsp
, seqid
);
5293 status
= PTR_ERR(task
);
5296 status
= nfs4_wait_for_completion_rpc_task(task
);
5299 request
->fl_flags
= fl_flags
;
5300 trace_nfs4_unlock(request
, state
, F_SETLK
, status
);
5304 struct nfs4_lockdata
{
5305 struct nfs_lock_args arg
;
5306 struct nfs_lock_res res
;
5307 struct nfs4_lock_state
*lsp
;
5308 struct nfs_open_context
*ctx
;
5309 struct file_lock fl
;
5310 unsigned long timestamp
;
5313 struct nfs_server
*server
;
5316 static struct nfs4_lockdata
*nfs4_alloc_lockdata(struct file_lock
*fl
,
5317 struct nfs_open_context
*ctx
, struct nfs4_lock_state
*lsp
,
5320 struct nfs4_lockdata
*p
;
5321 struct inode
*inode
= lsp
->ls_state
->inode
;
5322 struct nfs_server
*server
= NFS_SERVER(inode
);
5324 p
= kzalloc(sizeof(*p
), gfp_mask
);
5328 p
->arg
.fh
= NFS_FH(inode
);
5330 p
->arg
.open_seqid
= nfs_alloc_seqid(&lsp
->ls_state
->owner
->so_seqid
, gfp_mask
);
5331 if (p
->arg
.open_seqid
== NULL
)
5333 p
->arg
.lock_seqid
= nfs_alloc_seqid(&lsp
->ls_seqid
, gfp_mask
);
5334 if (p
->arg
.lock_seqid
== NULL
)
5335 goto out_free_seqid
;
5336 p
->arg
.lock_stateid
= &lsp
->ls_stateid
;
5337 p
->arg
.lock_owner
.clientid
= server
->nfs_client
->cl_clientid
;
5338 p
->arg
.lock_owner
.id
= lsp
->ls_seqid
.owner_id
;
5339 p
->arg
.lock_owner
.s_dev
= server
->s_dev
;
5340 p
->res
.lock_seqid
= p
->arg
.lock_seqid
;
5343 atomic_inc(&lsp
->ls_count
);
5344 p
->ctx
= get_nfs_open_context(ctx
);
5345 memcpy(&p
->fl
, fl
, sizeof(p
->fl
));
5348 nfs_free_seqid(p
->arg
.open_seqid
);
5354 static void nfs4_lock_prepare(struct rpc_task
*task
, void *calldata
)
5356 struct nfs4_lockdata
*data
= calldata
;
5357 struct nfs4_state
*state
= data
->lsp
->ls_state
;
5359 dprintk("%s: begin!\n", __func__
);
5360 if (nfs_wait_on_sequence(data
->arg
.lock_seqid
, task
) != 0)
5362 /* Do we need to do an open_to_lock_owner? */
5363 if (!(data
->arg
.lock_seqid
->sequence
->flags
& NFS_SEQID_CONFIRMED
)) {
5364 if (nfs_wait_on_sequence(data
->arg
.open_seqid
, task
) != 0) {
5365 goto out_release_lock_seqid
;
5367 data
->arg
.open_stateid
= &state
->open_stateid
;
5368 data
->arg
.new_lock_owner
= 1;
5369 data
->res
.open_seqid
= data
->arg
.open_seqid
;
5371 data
->arg
.new_lock_owner
= 0;
5372 if (!nfs4_valid_open_stateid(state
)) {
5373 data
->rpc_status
= -EBADF
;
5374 task
->tk_action
= NULL
;
5375 goto out_release_open_seqid
;
5377 data
->timestamp
= jiffies
;
5378 if (nfs4_setup_sequence(data
->server
,
5379 &data
->arg
.seq_args
,
5383 out_release_open_seqid
:
5384 nfs_release_seqid(data
->arg
.open_seqid
);
5385 out_release_lock_seqid
:
5386 nfs_release_seqid(data
->arg
.lock_seqid
);
5388 nfs4_sequence_done(task
, &data
->res
.seq_res
);
5389 dprintk("%s: done!, ret = %d\n", __func__
, data
->rpc_status
);
5392 static void nfs4_lock_done(struct rpc_task
*task
, void *calldata
)
5394 struct nfs4_lockdata
*data
= calldata
;
5396 dprintk("%s: begin!\n", __func__
);
5398 if (!nfs4_sequence_done(task
, &data
->res
.seq_res
))
5401 data
->rpc_status
= task
->tk_status
;
5402 if (data
->arg
.new_lock_owner
!= 0) {
5403 if (data
->rpc_status
== 0)
5404 nfs_confirm_seqid(&data
->lsp
->ls_seqid
, 0);
5408 if (data
->rpc_status
== 0) {
5409 nfs4_stateid_copy(&data
->lsp
->ls_stateid
, &data
->res
.stateid
);
5410 set_bit(NFS_LOCK_INITIALIZED
, &data
->lsp
->ls_flags
);
5411 renew_lease(NFS_SERVER(data
->ctx
->dentry
->d_inode
), data
->timestamp
);
5414 dprintk("%s: done, ret = %d!\n", __func__
, data
->rpc_status
);
5417 static void nfs4_lock_release(void *calldata
)
5419 struct nfs4_lockdata
*data
= calldata
;
5421 dprintk("%s: begin!\n", __func__
);
5422 nfs_free_seqid(data
->arg
.open_seqid
);
5423 if (data
->cancelled
!= 0) {
5424 struct rpc_task
*task
;
5425 task
= nfs4_do_unlck(&data
->fl
, data
->ctx
, data
->lsp
,
5426 data
->arg
.lock_seqid
);
5428 rpc_put_task_async(task
);
5429 dprintk("%s: cancelling lock!\n", __func__
);
5431 nfs_free_seqid(data
->arg
.lock_seqid
);
5432 nfs4_put_lock_state(data
->lsp
);
5433 put_nfs_open_context(data
->ctx
);
5435 dprintk("%s: done!\n", __func__
);
5438 static const struct rpc_call_ops nfs4_lock_ops
= {
5439 .rpc_call_prepare
= nfs4_lock_prepare
,
5440 .rpc_call_done
= nfs4_lock_done
,
5441 .rpc_release
= nfs4_lock_release
,
5444 static void nfs4_handle_setlk_error(struct nfs_server
*server
, struct nfs4_lock_state
*lsp
, int new_lock_owner
, int error
)
5447 case -NFS4ERR_ADMIN_REVOKED
:
5448 case -NFS4ERR_BAD_STATEID
:
5449 lsp
->ls_seqid
.flags
&= ~NFS_SEQID_CONFIRMED
;
5450 if (new_lock_owner
!= 0 ||
5451 test_bit(NFS_LOCK_INITIALIZED
, &lsp
->ls_flags
) != 0)
5452 nfs4_schedule_stateid_recovery(server
, lsp
->ls_state
);
5454 case -NFS4ERR_STALE_STATEID
:
5455 lsp
->ls_seqid
.flags
&= ~NFS_SEQID_CONFIRMED
;
5456 case -NFS4ERR_EXPIRED
:
5457 nfs4_schedule_lease_recovery(server
->nfs_client
);
5461 static int _nfs4_do_setlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*fl
, int recovery_type
)
5463 struct nfs4_lockdata
*data
;
5464 struct rpc_task
*task
;
5465 struct rpc_message msg
= {
5466 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOCK
],
5467 .rpc_cred
= state
->owner
->so_cred
,
5469 struct rpc_task_setup task_setup_data
= {
5470 .rpc_client
= NFS_CLIENT(state
->inode
),
5471 .rpc_message
= &msg
,
5472 .callback_ops
= &nfs4_lock_ops
,
5473 .workqueue
= nfsiod_workqueue
,
5474 .flags
= RPC_TASK_ASYNC
,
5478 dprintk("%s: begin!\n", __func__
);
5479 data
= nfs4_alloc_lockdata(fl
, nfs_file_open_context(fl
->fl_file
),
5480 fl
->fl_u
.nfs4_fl
.owner
,
5481 recovery_type
== NFS_LOCK_NEW
? GFP_KERNEL
: GFP_NOFS
);
5485 data
->arg
.block
= 1;
5486 nfs4_init_sequence(&data
->arg
.seq_args
, &data
->res
.seq_res
, 1);
5487 msg
.rpc_argp
= &data
->arg
;
5488 msg
.rpc_resp
= &data
->res
;
5489 task_setup_data
.callback_data
= data
;
5490 if (recovery_type
> NFS_LOCK_NEW
) {
5491 if (recovery_type
== NFS_LOCK_RECLAIM
)
5492 data
->arg
.reclaim
= NFS_LOCK_RECLAIM
;
5493 nfs4_set_sequence_privileged(&data
->arg
.seq_args
);
5495 task
= rpc_run_task(&task_setup_data
);
5497 return PTR_ERR(task
);
5498 ret
= nfs4_wait_for_completion_rpc_task(task
);
5500 ret
= data
->rpc_status
;
5502 nfs4_handle_setlk_error(data
->server
, data
->lsp
,
5503 data
->arg
.new_lock_owner
, ret
);
5505 data
->cancelled
= 1;
5507 dprintk("%s: done, ret = %d!\n", __func__
, ret
);
5511 static int nfs4_lock_reclaim(struct nfs4_state
*state
, struct file_lock
*request
)
5513 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
5514 struct nfs4_exception exception
= {
5515 .inode
= state
->inode
,
5520 /* Cache the lock if possible... */
5521 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) != 0)
5523 err
= _nfs4_do_setlk(state
, F_SETLK
, request
, NFS_LOCK_RECLAIM
);
5524 trace_nfs4_lock_reclaim(request
, state
, F_SETLK
, err
);
5525 if (err
!= -NFS4ERR_DELAY
)
5527 nfs4_handle_exception(server
, err
, &exception
);
5528 } while (exception
.retry
);
5532 static int nfs4_lock_expired(struct nfs4_state
*state
, struct file_lock
*request
)
5534 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
5535 struct nfs4_exception exception
= {
5536 .inode
= state
->inode
,
5540 err
= nfs4_set_lock_state(state
, request
);
5543 if (!recover_lost_locks
) {
5544 set_bit(NFS_LOCK_LOST
, &request
->fl_u
.nfs4_fl
.owner
->ls_flags
);
5548 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) != 0)
5550 err
= _nfs4_do_setlk(state
, F_SETLK
, request
, NFS_LOCK_EXPIRED
);
5551 trace_nfs4_lock_expired(request
, state
, F_SETLK
, err
);
5555 case -NFS4ERR_GRACE
:
5556 case -NFS4ERR_DELAY
:
5557 nfs4_handle_exception(server
, err
, &exception
);
5560 } while (exception
.retry
);
5565 #if defined(CONFIG_NFS_V4_1)
5567 * nfs41_check_expired_locks - possibly free a lock stateid
5569 * @state: NFSv4 state for an inode
5571 * Returns NFS_OK if recovery for this stateid is now finished.
5572 * Otherwise a negative NFS4ERR value is returned.
5574 static int nfs41_check_expired_locks(struct nfs4_state
*state
)
5576 int status
, ret
= -NFS4ERR_BAD_STATEID
;
5577 struct nfs4_lock_state
*lsp
;
5578 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
5580 list_for_each_entry(lsp
, &state
->lock_states
, ls_locks
) {
5581 if (test_bit(NFS_LOCK_INITIALIZED
, &lsp
->ls_flags
)) {
5582 struct rpc_cred
*cred
= lsp
->ls_state
->owner
->so_cred
;
5584 status
= nfs41_test_stateid(server
,
5587 trace_nfs4_test_lock_stateid(state
, lsp
, status
);
5588 if (status
!= NFS_OK
) {
5589 /* Free the stateid unless the server
5590 * informs us the stateid is unrecognized. */
5591 if (status
!= -NFS4ERR_BAD_STATEID
)
5592 nfs41_free_stateid(server
,
5595 clear_bit(NFS_LOCK_INITIALIZED
, &lsp
->ls_flags
);
5604 static int nfs41_lock_expired(struct nfs4_state
*state
, struct file_lock
*request
)
5606 int status
= NFS_OK
;
5608 if (test_bit(LK_STATE_IN_USE
, &state
->flags
))
5609 status
= nfs41_check_expired_locks(state
);
5610 if (status
!= NFS_OK
)
5611 status
= nfs4_lock_expired(state
, request
);
5616 static int _nfs4_proc_setlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
5618 struct nfs4_state_owner
*sp
= state
->owner
;
5619 struct nfs_inode
*nfsi
= NFS_I(state
->inode
);
5620 unsigned char fl_flags
= request
->fl_flags
;
5622 int status
= -ENOLCK
;
5624 if ((fl_flags
& FL_POSIX
) &&
5625 !test_bit(NFS_STATE_POSIX_LOCKS
, &state
->flags
))
5627 /* Is this a delegated open? */
5628 status
= nfs4_set_lock_state(state
, request
);
5631 request
->fl_flags
|= FL_ACCESS
;
5632 status
= do_vfs_lock(request
->fl_file
, request
);
5635 down_read(&nfsi
->rwsem
);
5636 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
)) {
5637 /* Yes: cache locks! */
5638 /* ...but avoid races with delegation recall... */
5639 request
->fl_flags
= fl_flags
& ~FL_SLEEP
;
5640 status
= do_vfs_lock(request
->fl_file
, request
);
5643 seq
= raw_seqcount_begin(&sp
->so_reclaim_seqcount
);
5644 up_read(&nfsi
->rwsem
);
5645 status
= _nfs4_do_setlk(state
, cmd
, request
, NFS_LOCK_NEW
);
5648 down_read(&nfsi
->rwsem
);
5649 if (read_seqcount_retry(&sp
->so_reclaim_seqcount
, seq
)) {
5650 status
= -NFS4ERR_DELAY
;
5653 /* Note: we always want to sleep here! */
5654 request
->fl_flags
= fl_flags
| FL_SLEEP
;
5655 if (do_vfs_lock(request
->fl_file
, request
) < 0)
5656 printk(KERN_WARNING
"NFS: %s: VFS is out of sync with lock "
5657 "manager!\n", __func__
);
5659 up_read(&nfsi
->rwsem
);
5661 request
->fl_flags
= fl_flags
;
5665 static int nfs4_proc_setlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
5667 struct nfs4_exception exception
= {
5669 .inode
= state
->inode
,
5674 err
= _nfs4_proc_setlk(state
, cmd
, request
);
5675 trace_nfs4_set_lock(request
, state
, cmd
, err
);
5676 if (err
== -NFS4ERR_DENIED
)
5678 err
= nfs4_handle_exception(NFS_SERVER(state
->inode
),
5680 } while (exception
.retry
);
5685 nfs4_proc_lock(struct file
*filp
, int cmd
, struct file_lock
*request
)
5687 struct nfs_open_context
*ctx
;
5688 struct nfs4_state
*state
;
5689 unsigned long timeout
= NFS4_LOCK_MINTIMEOUT
;
5692 /* verify open state */
5693 ctx
= nfs_file_open_context(filp
);
5696 if (request
->fl_start
< 0 || request
->fl_end
< 0)
5699 if (IS_GETLK(cmd
)) {
5701 return nfs4_proc_getlk(state
, F_GETLK
, request
);
5705 if (!(IS_SETLK(cmd
) || IS_SETLKW(cmd
)))
5708 if (request
->fl_type
== F_UNLCK
) {
5710 return nfs4_proc_unlck(state
, cmd
, request
);
5717 * Don't rely on the VFS having checked the file open mode,
5718 * since it won't do this for flock() locks.
5720 switch (request
->fl_type
) {
5722 if (!(filp
->f_mode
& FMODE_READ
))
5726 if (!(filp
->f_mode
& FMODE_WRITE
))
5731 status
= nfs4_proc_setlk(state
, cmd
, request
);
5732 if ((status
!= -EAGAIN
) || IS_SETLK(cmd
))
5734 timeout
= nfs4_set_lock_task_retry(timeout
);
5735 status
= -ERESTARTSYS
;
5738 } while(status
< 0);
5742 int nfs4_lock_delegation_recall(struct file_lock
*fl
, struct nfs4_state
*state
, const nfs4_stateid
*stateid
)
5744 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
5747 err
= nfs4_set_lock_state(state
, fl
);
5750 err
= _nfs4_do_setlk(state
, F_SETLK
, fl
, NFS_LOCK_NEW
);
5751 return nfs4_handle_delegation_recall_error(server
, state
, stateid
, err
);
5754 struct nfs_release_lockowner_data
{
5755 struct nfs4_lock_state
*lsp
;
5756 struct nfs_server
*server
;
5757 struct nfs_release_lockowner_args args
;
5758 struct nfs4_sequence_args seq_args
;
5759 struct nfs4_sequence_res seq_res
;
5762 static void nfs4_release_lockowner_prepare(struct rpc_task
*task
, void *calldata
)
5764 struct nfs_release_lockowner_data
*data
= calldata
;
5765 nfs40_setup_sequence(data
->server
,
5766 &data
->seq_args
, &data
->seq_res
, task
);
5769 static void nfs4_release_lockowner_done(struct rpc_task
*task
, void *calldata
)
5771 struct nfs_release_lockowner_data
*data
= calldata
;
5772 nfs40_sequence_done(task
, &data
->seq_res
);
5775 static void nfs4_release_lockowner_release(void *calldata
)
5777 struct nfs_release_lockowner_data
*data
= calldata
;
5778 nfs4_free_lock_state(data
->server
, data
->lsp
);
5782 static const struct rpc_call_ops nfs4_release_lockowner_ops
= {
5783 .rpc_call_prepare
= nfs4_release_lockowner_prepare
,
5784 .rpc_call_done
= nfs4_release_lockowner_done
,
5785 .rpc_release
= nfs4_release_lockowner_release
,
5788 static int nfs4_release_lockowner(struct nfs_server
*server
, struct nfs4_lock_state
*lsp
)
5790 struct nfs_release_lockowner_data
*data
;
5791 struct rpc_message msg
= {
5792 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RELEASE_LOCKOWNER
],
5795 if (server
->nfs_client
->cl_mvops
->minor_version
!= 0)
5798 data
= kmalloc(sizeof(*data
), GFP_NOFS
);
5801 nfs4_init_sequence(&data
->seq_args
, &data
->seq_res
, 0);
5803 data
->server
= server
;
5804 data
->args
.lock_owner
.clientid
= server
->nfs_client
->cl_clientid
;
5805 data
->args
.lock_owner
.id
= lsp
->ls_seqid
.owner_id
;
5806 data
->args
.lock_owner
.s_dev
= server
->s_dev
;
5808 msg
.rpc_argp
= &data
->args
;
5809 rpc_call_async(server
->client
, &msg
, 0, &nfs4_release_lockowner_ops
, data
);
5813 #define XATTR_NAME_NFSV4_ACL "system.nfs4_acl"
5815 static int nfs4_xattr_set_nfs4_acl(struct dentry
*dentry
, const char *key
,
5816 const void *buf
, size_t buflen
,
5817 int flags
, int type
)
5819 if (strcmp(key
, "") != 0)
5822 return nfs4_proc_set_acl(dentry
->d_inode
, buf
, buflen
);
5825 static int nfs4_xattr_get_nfs4_acl(struct dentry
*dentry
, const char *key
,
5826 void *buf
, size_t buflen
, int type
)
5828 if (strcmp(key
, "") != 0)
5831 return nfs4_proc_get_acl(dentry
->d_inode
, buf
, buflen
);
5834 static size_t nfs4_xattr_list_nfs4_acl(struct dentry
*dentry
, char *list
,
5835 size_t list_len
, const char *name
,
5836 size_t name_len
, int type
)
5838 size_t len
= sizeof(XATTR_NAME_NFSV4_ACL
);
5840 if (!nfs4_server_supports_acls(NFS_SERVER(dentry
->d_inode
)))
5843 if (list
&& len
<= list_len
)
5844 memcpy(list
, XATTR_NAME_NFSV4_ACL
, len
);
5848 #ifdef CONFIG_NFS_V4_SECURITY_LABEL
5849 static inline int nfs4_server_supports_labels(struct nfs_server
*server
)
5851 return server
->caps
& NFS_CAP_SECURITY_LABEL
;
5854 static int nfs4_xattr_set_nfs4_label(struct dentry
*dentry
, const char *key
,
5855 const void *buf
, size_t buflen
,
5856 int flags
, int type
)
5858 if (security_ismaclabel(key
))
5859 return nfs4_set_security_label(dentry
, buf
, buflen
);
5864 static int nfs4_xattr_get_nfs4_label(struct dentry
*dentry
, const char *key
,
5865 void *buf
, size_t buflen
, int type
)
5867 if (security_ismaclabel(key
))
5868 return nfs4_get_security_label(dentry
->d_inode
, buf
, buflen
);
5872 static size_t nfs4_xattr_list_nfs4_label(struct dentry
*dentry
, char *list
,
5873 size_t list_len
, const char *name
,
5874 size_t name_len
, int type
)
5878 if (nfs_server_capable(dentry
->d_inode
, NFS_CAP_SECURITY_LABEL
)) {
5879 len
= security_inode_listsecurity(dentry
->d_inode
, NULL
, 0);
5880 if (list
&& len
<= list_len
)
5881 security_inode_listsecurity(dentry
->d_inode
, list
, len
);
5886 static const struct xattr_handler nfs4_xattr_nfs4_label_handler
= {
5887 .prefix
= XATTR_SECURITY_PREFIX
,
5888 .list
= nfs4_xattr_list_nfs4_label
,
5889 .get
= nfs4_xattr_get_nfs4_label
,
5890 .set
= nfs4_xattr_set_nfs4_label
,
5896 * nfs_fhget will use either the mounted_on_fileid or the fileid
5898 static void nfs_fixup_referral_attributes(struct nfs_fattr
*fattr
)
5900 if (!(((fattr
->valid
& NFS_ATTR_FATTR_MOUNTED_ON_FILEID
) ||
5901 (fattr
->valid
& NFS_ATTR_FATTR_FILEID
)) &&
5902 (fattr
->valid
& NFS_ATTR_FATTR_FSID
) &&
5903 (fattr
->valid
& NFS_ATTR_FATTR_V4_LOCATIONS
)))
5906 fattr
->valid
|= NFS_ATTR_FATTR_TYPE
| NFS_ATTR_FATTR_MODE
|
5907 NFS_ATTR_FATTR_NLINK
| NFS_ATTR_FATTR_V4_REFERRAL
;
5908 fattr
->mode
= S_IFDIR
| S_IRUGO
| S_IXUGO
;
5912 static int _nfs4_proc_fs_locations(struct rpc_clnt
*client
, struct inode
*dir
,
5913 const struct qstr
*name
,
5914 struct nfs4_fs_locations
*fs_locations
,
5917 struct nfs_server
*server
= NFS_SERVER(dir
);
5919 [0] = FATTR4_WORD0_FSID
| FATTR4_WORD0_FS_LOCATIONS
,
5921 struct nfs4_fs_locations_arg args
= {
5922 .dir_fh
= NFS_FH(dir
),
5927 struct nfs4_fs_locations_res res
= {
5928 .fs_locations
= fs_locations
,
5930 struct rpc_message msg
= {
5931 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_FS_LOCATIONS
],
5937 dprintk("%s: start\n", __func__
);
5939 /* Ask for the fileid of the absent filesystem if mounted_on_fileid
5940 * is not supported */
5941 if (NFS_SERVER(dir
)->attr_bitmask
[1] & FATTR4_WORD1_MOUNTED_ON_FILEID
)
5942 bitmask
[1] |= FATTR4_WORD1_MOUNTED_ON_FILEID
;
5944 bitmask
[0] |= FATTR4_WORD0_FILEID
;
5946 nfs_fattr_init(&fs_locations
->fattr
);
5947 fs_locations
->server
= server
;
5948 fs_locations
->nlocations
= 0;
5949 status
= nfs4_call_sync(client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
5950 dprintk("%s: returned status = %d\n", __func__
, status
);
5954 int nfs4_proc_fs_locations(struct rpc_clnt
*client
, struct inode
*dir
,
5955 const struct qstr
*name
,
5956 struct nfs4_fs_locations
*fs_locations
,
5959 struct nfs4_exception exception
= { };
5962 err
= _nfs4_proc_fs_locations(client
, dir
, name
,
5963 fs_locations
, page
);
5964 trace_nfs4_get_fs_locations(dir
, name
, err
);
5965 err
= nfs4_handle_exception(NFS_SERVER(dir
), err
,
5967 } while (exception
.retry
);
5972 * If 'use_integrity' is true and the state managment nfs_client
5973 * cl_rpcclient is using krb5i/p, use the integrity protected cl_rpcclient
5974 * and the machine credential as per RFC3530bis and RFC5661 Security
5975 * Considerations sections. Otherwise, just use the user cred with the
5976 * filesystem's rpc_client.
5978 static int _nfs4_proc_secinfo(struct inode
*dir
, const struct qstr
*name
, struct nfs4_secinfo_flavors
*flavors
, bool use_integrity
)
5981 struct nfs4_secinfo_arg args
= {
5982 .dir_fh
= NFS_FH(dir
),
5985 struct nfs4_secinfo_res res
= {
5988 struct rpc_message msg
= {
5989 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SECINFO
],
5993 struct rpc_clnt
*clnt
= NFS_SERVER(dir
)->client
;
5995 if (use_integrity
) {
5996 clnt
= NFS_SERVER(dir
)->nfs_client
->cl_rpcclient
;
5997 msg
.rpc_cred
= nfs4_get_clid_cred(NFS_SERVER(dir
)->nfs_client
);
6000 dprintk("NFS call secinfo %s\n", name
->name
);
6002 nfs4_state_protect(NFS_SERVER(dir
)->nfs_client
,
6003 NFS_SP4_MACH_CRED_SECINFO
, &clnt
, &msg
);
6005 status
= nfs4_call_sync(clnt
, NFS_SERVER(dir
), &msg
, &args
.seq_args
,
6007 dprintk("NFS reply secinfo: %d\n", status
);
6010 put_rpccred(msg
.rpc_cred
);
6015 int nfs4_proc_secinfo(struct inode
*dir
, const struct qstr
*name
,
6016 struct nfs4_secinfo_flavors
*flavors
)
6018 struct nfs4_exception exception
= { };
6021 err
= -NFS4ERR_WRONGSEC
;
6023 /* try to use integrity protection with machine cred */
6024 if (_nfs4_is_integrity_protected(NFS_SERVER(dir
)->nfs_client
))
6025 err
= _nfs4_proc_secinfo(dir
, name
, flavors
, true);
6028 * if unable to use integrity protection, or SECINFO with
6029 * integrity protection returns NFS4ERR_WRONGSEC (which is
6030 * disallowed by spec, but exists in deployed servers) use
6031 * the current filesystem's rpc_client and the user cred.
6033 if (err
== -NFS4ERR_WRONGSEC
)
6034 err
= _nfs4_proc_secinfo(dir
, name
, flavors
, false);
6036 trace_nfs4_secinfo(dir
, name
, err
);
6037 err
= nfs4_handle_exception(NFS_SERVER(dir
), err
,
6039 } while (exception
.retry
);
6043 #ifdef CONFIG_NFS_V4_1
6045 * Check the exchange flags returned by the server for invalid flags, having
6046 * both PNFS and NON_PNFS flags set, and not having one of NON_PNFS, PNFS, or
6049 static int nfs4_check_cl_exchange_flags(u32 flags
)
6051 if (flags
& ~EXCHGID4_FLAG_MASK_R
)
6053 if ((flags
& EXCHGID4_FLAG_USE_PNFS_MDS
) &&
6054 (flags
& EXCHGID4_FLAG_USE_NON_PNFS
))
6056 if (!(flags
& (EXCHGID4_FLAG_MASK_PNFS
)))
6060 return -NFS4ERR_INVAL
;
6064 nfs41_same_server_scope(struct nfs41_server_scope
*a
,
6065 struct nfs41_server_scope
*b
)
6067 if (a
->server_scope_sz
== b
->server_scope_sz
&&
6068 memcmp(a
->server_scope
, b
->server_scope
, a
->server_scope_sz
) == 0)
6075 * nfs4_proc_bind_conn_to_session()
6077 * The 4.1 client currently uses the same TCP connection for the
6078 * fore and backchannel.
6080 int nfs4_proc_bind_conn_to_session(struct nfs_client
*clp
, struct rpc_cred
*cred
)
6083 struct nfs41_bind_conn_to_session_res res
;
6084 struct rpc_message msg
= {
6086 &nfs4_procedures
[NFSPROC4_CLNT_BIND_CONN_TO_SESSION
],
6092 dprintk("--> %s\n", __func__
);
6094 res
.session
= kzalloc(sizeof(struct nfs4_session
), GFP_NOFS
);
6095 if (unlikely(res
.session
== NULL
)) {
6100 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
6101 trace_nfs4_bind_conn_to_session(clp
, status
);
6103 if (memcmp(res
.session
->sess_id
.data
,
6104 clp
->cl_session
->sess_id
.data
, NFS4_MAX_SESSIONID_LEN
)) {
6105 dprintk("NFS: %s: Session ID mismatch\n", __func__
);
6109 if (res
.dir
!= NFS4_CDFS4_BOTH
) {
6110 dprintk("NFS: %s: Unexpected direction from server\n",
6115 if (res
.use_conn_in_rdma_mode
) {
6116 dprintk("NFS: %s: Server returned RDMA mode = true\n",
6125 dprintk("<-- %s status= %d\n", __func__
, status
);
6130 * Minimum set of SP4_MACH_CRED operations from RFC 5661 in the enforce map
6131 * and operations we'd like to see to enable certain features in the allow map
6133 static const struct nfs41_state_protection nfs4_sp4_mach_cred_request
= {
6134 .how
= SP4_MACH_CRED
,
6135 .enforce
.u
.words
= {
6136 [1] = 1 << (OP_BIND_CONN_TO_SESSION
- 32) |
6137 1 << (OP_EXCHANGE_ID
- 32) |
6138 1 << (OP_CREATE_SESSION
- 32) |
6139 1 << (OP_DESTROY_SESSION
- 32) |
6140 1 << (OP_DESTROY_CLIENTID
- 32)
6143 [0] = 1 << (OP_CLOSE
) |
6145 [1] = 1 << (OP_SECINFO
- 32) |
6146 1 << (OP_SECINFO_NO_NAME
- 32)
6151 * Select the state protection mode for client `clp' given the server results
6152 * from exchange_id in `sp'.
6154 * Returns 0 on success, negative errno otherwise.
6156 static int nfs4_sp4_select_mode(struct nfs_client
*clp
,
6157 struct nfs41_state_protection
*sp
)
6159 static const u32 supported_enforce
[NFS4_OP_MAP_NUM_WORDS
] = {
6160 [1] = 1 << (OP_BIND_CONN_TO_SESSION
- 32) |
6161 1 << (OP_EXCHANGE_ID
- 32) |
6162 1 << (OP_CREATE_SESSION
- 32) |
6163 1 << (OP_DESTROY_SESSION
- 32) |
6164 1 << (OP_DESTROY_CLIENTID
- 32)
6168 if (sp
->how
== SP4_MACH_CRED
) {
6169 /* Print state protect result */
6170 dfprintk(MOUNT
, "Server SP4_MACH_CRED support:\n");
6171 for (i
= 0; i
<= LAST_NFS4_OP
; i
++) {
6172 if (test_bit(i
, sp
->enforce
.u
.longs
))
6173 dfprintk(MOUNT
, " enforce op %d\n", i
);
6174 if (test_bit(i
, sp
->allow
.u
.longs
))
6175 dfprintk(MOUNT
, " allow op %d\n", i
);
6178 /* make sure nothing is on enforce list that isn't supported */
6179 for (i
= 0; i
< NFS4_OP_MAP_NUM_WORDS
; i
++) {
6180 if (sp
->enforce
.u
.words
[i
] & ~supported_enforce
[i
]) {
6181 dfprintk(MOUNT
, "sp4_mach_cred: disabled\n");
6187 * Minimal mode - state operations are allowed to use machine
6188 * credential. Note this already happens by default, so the
6189 * client doesn't have to do anything more than the negotiation.
6191 * NOTE: we don't care if EXCHANGE_ID is in the list -
6192 * we're already using the machine cred for exchange_id
6193 * and will never use a different cred.
6195 if (test_bit(OP_BIND_CONN_TO_SESSION
, sp
->enforce
.u
.longs
) &&
6196 test_bit(OP_CREATE_SESSION
, sp
->enforce
.u
.longs
) &&
6197 test_bit(OP_DESTROY_SESSION
, sp
->enforce
.u
.longs
) &&
6198 test_bit(OP_DESTROY_CLIENTID
, sp
->enforce
.u
.longs
)) {
6199 dfprintk(MOUNT
, "sp4_mach_cred:\n");
6200 dfprintk(MOUNT
, " minimal mode enabled\n");
6201 set_bit(NFS_SP4_MACH_CRED_MINIMAL
, &clp
->cl_sp4_flags
);
6203 dfprintk(MOUNT
, "sp4_mach_cred: disabled\n");
6207 if (test_bit(OP_CLOSE
, sp
->allow
.u
.longs
) &&
6208 test_bit(OP_LOCKU
, sp
->allow
.u
.longs
)) {
6209 dfprintk(MOUNT
, " cleanup mode enabled\n");
6210 set_bit(NFS_SP4_MACH_CRED_CLEANUP
, &clp
->cl_sp4_flags
);
6213 if (test_bit(OP_SECINFO
, sp
->allow
.u
.longs
) &&
6214 test_bit(OP_SECINFO_NO_NAME
, sp
->allow
.u
.longs
)) {
6215 dfprintk(MOUNT
, " secinfo mode enabled\n");
6216 set_bit(NFS_SP4_MACH_CRED_SECINFO
, &clp
->cl_sp4_flags
);
6224 * _nfs4_proc_exchange_id()
6226 * Wrapper for EXCHANGE_ID operation.
6228 static int _nfs4_proc_exchange_id(struct nfs_client
*clp
, struct rpc_cred
*cred
,
6231 nfs4_verifier verifier
;
6232 struct nfs41_exchange_id_args args
= {
6233 .verifier
= &verifier
,
6235 .flags
= EXCHGID4_FLAG_SUPP_MOVED_REFER
|
6236 EXCHGID4_FLAG_BIND_PRINC_STATEID
,
6238 struct nfs41_exchange_id_res res
= {
6242 struct rpc_message msg
= {
6243 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_EXCHANGE_ID
],
6249 nfs4_init_boot_verifier(clp
, &verifier
);
6250 args
.id_len
= nfs4_init_uniform_client_string(clp
, args
.id
,
6252 dprintk("NFS call exchange_id auth=%s, '%.*s'\n",
6253 clp
->cl_rpcclient
->cl_auth
->au_ops
->au_name
,
6254 args
.id_len
, args
.id
);
6256 res
.server_owner
= kzalloc(sizeof(struct nfs41_server_owner
),
6258 if (unlikely(res
.server_owner
== NULL
)) {
6263 res
.server_scope
= kzalloc(sizeof(struct nfs41_server_scope
),
6265 if (unlikely(res
.server_scope
== NULL
)) {
6267 goto out_server_owner
;
6270 res
.impl_id
= kzalloc(sizeof(struct nfs41_impl_id
), GFP_NOFS
);
6271 if (unlikely(res
.impl_id
== NULL
)) {
6273 goto out_server_scope
;
6278 args
.state_protect
.how
= SP4_NONE
;
6282 args
.state_protect
= nfs4_sp4_mach_cred_request
;
6289 goto out_server_scope
;
6292 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
6293 trace_nfs4_exchange_id(clp
, status
);
6295 status
= nfs4_check_cl_exchange_flags(res
.flags
);
6298 status
= nfs4_sp4_select_mode(clp
, &res
.state_protect
);
6301 clp
->cl_clientid
= res
.clientid
;
6302 clp
->cl_exchange_flags
= (res
.flags
& ~EXCHGID4_FLAG_CONFIRMED_R
);
6303 if (!(res
.flags
& EXCHGID4_FLAG_CONFIRMED_R
))
6304 clp
->cl_seqid
= res
.seqid
;
6306 kfree(clp
->cl_serverowner
);
6307 clp
->cl_serverowner
= res
.server_owner
;
6308 res
.server_owner
= NULL
;
6310 /* use the most recent implementation id */
6311 kfree(clp
->cl_implid
);
6312 clp
->cl_implid
= res
.impl_id
;
6314 if (clp
->cl_serverscope
!= NULL
&&
6315 !nfs41_same_server_scope(clp
->cl_serverscope
,
6316 res
.server_scope
)) {
6317 dprintk("%s: server_scope mismatch detected\n",
6319 set_bit(NFS4CLNT_SERVER_SCOPE_MISMATCH
, &clp
->cl_state
);
6320 kfree(clp
->cl_serverscope
);
6321 clp
->cl_serverscope
= NULL
;
6324 if (clp
->cl_serverscope
== NULL
) {
6325 clp
->cl_serverscope
= res
.server_scope
;
6332 kfree(res
.server_owner
);
6334 kfree(res
.server_scope
);
6336 if (clp
->cl_implid
!= NULL
)
6337 dprintk("NFS reply exchange_id: Server Implementation ID: "
6338 "domain: %s, name: %s, date: %llu,%u\n",
6339 clp
->cl_implid
->domain
, clp
->cl_implid
->name
,
6340 clp
->cl_implid
->date
.seconds
,
6341 clp
->cl_implid
->date
.nseconds
);
6342 dprintk("NFS reply exchange_id: %d\n", status
);
6347 * nfs4_proc_exchange_id()
6349 * Returns zero, a negative errno, or a negative NFS4ERR status code.
6351 * Since the clientid has expired, all compounds using sessions
6352 * associated with the stale clientid will be returning
6353 * NFS4ERR_BADSESSION in the sequence operation, and will therefore
6354 * be in some phase of session reset.
6356 * Will attempt to negotiate SP4_MACH_CRED if krb5i / krb5p auth is used.
6358 int nfs4_proc_exchange_id(struct nfs_client
*clp
, struct rpc_cred
*cred
)
6360 rpc_authflavor_t authflavor
= clp
->cl_rpcclient
->cl_auth
->au_flavor
;
6363 /* try SP4_MACH_CRED if krb5i/p */
6364 if (authflavor
== RPC_AUTH_GSS_KRB5I
||
6365 authflavor
== RPC_AUTH_GSS_KRB5P
) {
6366 status
= _nfs4_proc_exchange_id(clp
, cred
, SP4_MACH_CRED
);
6372 return _nfs4_proc_exchange_id(clp
, cred
, SP4_NONE
);
6375 static int _nfs4_proc_destroy_clientid(struct nfs_client
*clp
,
6376 struct rpc_cred
*cred
)
6378 struct rpc_message msg
= {
6379 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_DESTROY_CLIENTID
],
6385 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
6386 trace_nfs4_destroy_clientid(clp
, status
);
6388 dprintk("NFS: Got error %d from the server %s on "
6389 "DESTROY_CLIENTID.", status
, clp
->cl_hostname
);
6393 static int nfs4_proc_destroy_clientid(struct nfs_client
*clp
,
6394 struct rpc_cred
*cred
)
6399 for (loop
= NFS4_MAX_LOOP_ON_RECOVER
; loop
!= 0; loop
--) {
6400 ret
= _nfs4_proc_destroy_clientid(clp
, cred
);
6402 case -NFS4ERR_DELAY
:
6403 case -NFS4ERR_CLIENTID_BUSY
:
6413 int nfs4_destroy_clientid(struct nfs_client
*clp
)
6415 struct rpc_cred
*cred
;
6418 if (clp
->cl_mvops
->minor_version
< 1)
6420 if (clp
->cl_exchange_flags
== 0)
6422 if (clp
->cl_preserve_clid
)
6424 cred
= nfs4_get_clid_cred(clp
);
6425 ret
= nfs4_proc_destroy_clientid(clp
, cred
);
6430 case -NFS4ERR_STALE_CLIENTID
:
6431 clp
->cl_exchange_flags
= 0;
6437 struct nfs4_get_lease_time_data
{
6438 struct nfs4_get_lease_time_args
*args
;
6439 struct nfs4_get_lease_time_res
*res
;
6440 struct nfs_client
*clp
;
6443 static void nfs4_get_lease_time_prepare(struct rpc_task
*task
,
6446 struct nfs4_get_lease_time_data
*data
=
6447 (struct nfs4_get_lease_time_data
*)calldata
;
6449 dprintk("--> %s\n", __func__
);
6450 /* just setup sequence, do not trigger session recovery
6451 since we're invoked within one */
6452 nfs41_setup_sequence(data
->clp
->cl_session
,
6453 &data
->args
->la_seq_args
,
6454 &data
->res
->lr_seq_res
,
6456 dprintk("<-- %s\n", __func__
);
6460 * Called from nfs4_state_manager thread for session setup, so don't recover
6461 * from sequence operation or clientid errors.
6463 static void nfs4_get_lease_time_done(struct rpc_task
*task
, void *calldata
)
6465 struct nfs4_get_lease_time_data
*data
=
6466 (struct nfs4_get_lease_time_data
*)calldata
;
6468 dprintk("--> %s\n", __func__
);
6469 if (!nfs41_sequence_done(task
, &data
->res
->lr_seq_res
))
6471 switch (task
->tk_status
) {
6472 case -NFS4ERR_DELAY
:
6473 case -NFS4ERR_GRACE
:
6474 dprintk("%s Retry: tk_status %d\n", __func__
, task
->tk_status
);
6475 rpc_delay(task
, NFS4_POLL_RETRY_MIN
);
6476 task
->tk_status
= 0;
6478 case -NFS4ERR_RETRY_UNCACHED_REP
:
6479 rpc_restart_call_prepare(task
);
6482 dprintk("<-- %s\n", __func__
);
6485 static const struct rpc_call_ops nfs4_get_lease_time_ops
= {
6486 .rpc_call_prepare
= nfs4_get_lease_time_prepare
,
6487 .rpc_call_done
= nfs4_get_lease_time_done
,
6490 int nfs4_proc_get_lease_time(struct nfs_client
*clp
, struct nfs_fsinfo
*fsinfo
)
6492 struct rpc_task
*task
;
6493 struct nfs4_get_lease_time_args args
;
6494 struct nfs4_get_lease_time_res res
= {
6495 .lr_fsinfo
= fsinfo
,
6497 struct nfs4_get_lease_time_data data
= {
6502 struct rpc_message msg
= {
6503 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GET_LEASE_TIME
],
6507 struct rpc_task_setup task_setup
= {
6508 .rpc_client
= clp
->cl_rpcclient
,
6509 .rpc_message
= &msg
,
6510 .callback_ops
= &nfs4_get_lease_time_ops
,
6511 .callback_data
= &data
,
6512 .flags
= RPC_TASK_TIMEOUT
,
6516 nfs4_init_sequence(&args
.la_seq_args
, &res
.lr_seq_res
, 0);
6517 nfs4_set_sequence_privileged(&args
.la_seq_args
);
6518 dprintk("--> %s\n", __func__
);
6519 task
= rpc_run_task(&task_setup
);
6522 status
= PTR_ERR(task
);
6524 status
= task
->tk_status
;
6527 dprintk("<-- %s return %d\n", __func__
, status
);
6533 * Initialize the values to be used by the client in CREATE_SESSION
6534 * If nfs4_init_session set the fore channel request and response sizes,
6537 * Set the back channel max_resp_sz_cached to zero to force the client to
6538 * always set csa_cachethis to FALSE because the current implementation
6539 * of the back channel DRC only supports caching the CB_SEQUENCE operation.
6541 static void nfs4_init_channel_attrs(struct nfs41_create_session_args
*args
)
6543 unsigned int max_rqst_sz
, max_resp_sz
;
6545 max_rqst_sz
= NFS_MAX_FILE_IO_SIZE
+ nfs41_maxwrite_overhead
;
6546 max_resp_sz
= NFS_MAX_FILE_IO_SIZE
+ nfs41_maxread_overhead
;
6548 /* Fore channel attributes */
6549 args
->fc_attrs
.max_rqst_sz
= max_rqst_sz
;
6550 args
->fc_attrs
.max_resp_sz
= max_resp_sz
;
6551 args
->fc_attrs
.max_ops
= NFS4_MAX_OPS
;
6552 args
->fc_attrs
.max_reqs
= max_session_slots
;
6554 dprintk("%s: Fore Channel : max_rqst_sz=%u max_resp_sz=%u "
6555 "max_ops=%u max_reqs=%u\n",
6557 args
->fc_attrs
.max_rqst_sz
, args
->fc_attrs
.max_resp_sz
,
6558 args
->fc_attrs
.max_ops
, args
->fc_attrs
.max_reqs
);
6560 /* Back channel attributes */
6561 args
->bc_attrs
.max_rqst_sz
= PAGE_SIZE
;
6562 args
->bc_attrs
.max_resp_sz
= PAGE_SIZE
;
6563 args
->bc_attrs
.max_resp_sz_cached
= 0;
6564 args
->bc_attrs
.max_ops
= NFS4_MAX_BACK_CHANNEL_OPS
;
6565 args
->bc_attrs
.max_reqs
= 1;
6567 dprintk("%s: Back Channel : max_rqst_sz=%u max_resp_sz=%u "
6568 "max_resp_sz_cached=%u max_ops=%u max_reqs=%u\n",
6570 args
->bc_attrs
.max_rqst_sz
, args
->bc_attrs
.max_resp_sz
,
6571 args
->bc_attrs
.max_resp_sz_cached
, args
->bc_attrs
.max_ops
,
6572 args
->bc_attrs
.max_reqs
);
6575 static int nfs4_verify_fore_channel_attrs(struct nfs41_create_session_args
*args
, struct nfs4_session
*session
)
6577 struct nfs4_channel_attrs
*sent
= &args
->fc_attrs
;
6578 struct nfs4_channel_attrs
*rcvd
= &session
->fc_attrs
;
6580 if (rcvd
->max_resp_sz
> sent
->max_resp_sz
)
6583 * Our requested max_ops is the minimum we need; we're not
6584 * prepared to break up compounds into smaller pieces than that.
6585 * So, no point even trying to continue if the server won't
6588 if (rcvd
->max_ops
< sent
->max_ops
)
6590 if (rcvd
->max_reqs
== 0)
6592 if (rcvd
->max_reqs
> NFS4_MAX_SLOT_TABLE
)
6593 rcvd
->max_reqs
= NFS4_MAX_SLOT_TABLE
;
6597 static int nfs4_verify_back_channel_attrs(struct nfs41_create_session_args
*args
, struct nfs4_session
*session
)
6599 struct nfs4_channel_attrs
*sent
= &args
->bc_attrs
;
6600 struct nfs4_channel_attrs
*rcvd
= &session
->bc_attrs
;
6602 if (rcvd
->max_rqst_sz
> sent
->max_rqst_sz
)
6604 if (rcvd
->max_resp_sz
< sent
->max_resp_sz
)
6606 if (rcvd
->max_resp_sz_cached
> sent
->max_resp_sz_cached
)
6608 /* These would render the backchannel useless: */
6609 if (rcvd
->max_ops
!= sent
->max_ops
)
6611 if (rcvd
->max_reqs
!= sent
->max_reqs
)
6616 static int nfs4_verify_channel_attrs(struct nfs41_create_session_args
*args
,
6617 struct nfs4_session
*session
)
6621 ret
= nfs4_verify_fore_channel_attrs(args
, session
);
6624 return nfs4_verify_back_channel_attrs(args
, session
);
6627 static int _nfs4_proc_create_session(struct nfs_client
*clp
,
6628 struct rpc_cred
*cred
)
6630 struct nfs4_session
*session
= clp
->cl_session
;
6631 struct nfs41_create_session_args args
= {
6633 .cb_program
= NFS4_CALLBACK
,
6635 struct nfs41_create_session_res res
= {
6638 struct rpc_message msg
= {
6639 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_CREATE_SESSION
],
6646 nfs4_init_channel_attrs(&args
);
6647 args
.flags
= (SESSION4_PERSIST
| SESSION4_BACK_CHAN
);
6649 status
= rpc_call_sync(session
->clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
6650 trace_nfs4_create_session(clp
, status
);
6653 /* Verify the session's negotiated channel_attrs values */
6654 status
= nfs4_verify_channel_attrs(&args
, session
);
6655 /* Increment the clientid slot sequence id */
6663 * Issues a CREATE_SESSION operation to the server.
6664 * It is the responsibility of the caller to verify the session is
6665 * expired before calling this routine.
6667 int nfs4_proc_create_session(struct nfs_client
*clp
, struct rpc_cred
*cred
)
6671 struct nfs4_session
*session
= clp
->cl_session
;
6673 dprintk("--> %s clp=%p session=%p\n", __func__
, clp
, session
);
6675 status
= _nfs4_proc_create_session(clp
, cred
);
6679 /* Init or reset the session slot tables */
6680 status
= nfs4_setup_session_slot_tables(session
);
6681 dprintk("slot table setup returned %d\n", status
);
6685 ptr
= (unsigned *)&session
->sess_id
.data
[0];
6686 dprintk("%s client>seqid %d sessionid %u:%u:%u:%u\n", __func__
,
6687 clp
->cl_seqid
, ptr
[0], ptr
[1], ptr
[2], ptr
[3]);
6689 dprintk("<-- %s\n", __func__
);
6694 * Issue the over-the-wire RPC DESTROY_SESSION.
6695 * The caller must serialize access to this routine.
6697 int nfs4_proc_destroy_session(struct nfs4_session
*session
,
6698 struct rpc_cred
*cred
)
6700 struct rpc_message msg
= {
6701 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_DESTROY_SESSION
],
6702 .rpc_argp
= session
,
6707 dprintk("--> nfs4_proc_destroy_session\n");
6709 /* session is still being setup */
6710 if (session
->clp
->cl_cons_state
!= NFS_CS_READY
)
6713 status
= rpc_call_sync(session
->clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
6714 trace_nfs4_destroy_session(session
->clp
, status
);
6717 dprintk("NFS: Got error %d from the server on DESTROY_SESSION. "
6718 "Session has been destroyed regardless...\n", status
);
6720 dprintk("<-- nfs4_proc_destroy_session\n");
6725 * Renew the cl_session lease.
6727 struct nfs4_sequence_data
{
6728 struct nfs_client
*clp
;
6729 struct nfs4_sequence_args args
;
6730 struct nfs4_sequence_res res
;
6733 static void nfs41_sequence_release(void *data
)
6735 struct nfs4_sequence_data
*calldata
= data
;
6736 struct nfs_client
*clp
= calldata
->clp
;
6738 if (atomic_read(&clp
->cl_count
) > 1)
6739 nfs4_schedule_state_renewal(clp
);
6740 nfs_put_client(clp
);
6744 static int nfs41_sequence_handle_errors(struct rpc_task
*task
, struct nfs_client
*clp
)
6746 switch(task
->tk_status
) {
6747 case -NFS4ERR_DELAY
:
6748 rpc_delay(task
, NFS4_POLL_RETRY_MAX
);
6751 nfs4_schedule_lease_recovery(clp
);
6756 static void nfs41_sequence_call_done(struct rpc_task
*task
, void *data
)
6758 struct nfs4_sequence_data
*calldata
= data
;
6759 struct nfs_client
*clp
= calldata
->clp
;
6761 if (!nfs41_sequence_done(task
, task
->tk_msg
.rpc_resp
))
6764 trace_nfs4_sequence(clp
, task
->tk_status
);
6765 if (task
->tk_status
< 0) {
6766 dprintk("%s ERROR %d\n", __func__
, task
->tk_status
);
6767 if (atomic_read(&clp
->cl_count
) == 1)
6770 if (nfs41_sequence_handle_errors(task
, clp
) == -EAGAIN
) {
6771 rpc_restart_call_prepare(task
);
6775 dprintk("%s rpc_cred %p\n", __func__
, task
->tk_msg
.rpc_cred
);
6777 dprintk("<-- %s\n", __func__
);
6780 static void nfs41_sequence_prepare(struct rpc_task
*task
, void *data
)
6782 struct nfs4_sequence_data
*calldata
= data
;
6783 struct nfs_client
*clp
= calldata
->clp
;
6784 struct nfs4_sequence_args
*args
;
6785 struct nfs4_sequence_res
*res
;
6787 args
= task
->tk_msg
.rpc_argp
;
6788 res
= task
->tk_msg
.rpc_resp
;
6790 nfs41_setup_sequence(clp
->cl_session
, args
, res
, task
);
6793 static const struct rpc_call_ops nfs41_sequence_ops
= {
6794 .rpc_call_done
= nfs41_sequence_call_done
,
6795 .rpc_call_prepare
= nfs41_sequence_prepare
,
6796 .rpc_release
= nfs41_sequence_release
,
6799 static struct rpc_task
*_nfs41_proc_sequence(struct nfs_client
*clp
,
6800 struct rpc_cred
*cred
,
6803 struct nfs4_sequence_data
*calldata
;
6804 struct rpc_message msg
= {
6805 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SEQUENCE
],
6808 struct rpc_task_setup task_setup_data
= {
6809 .rpc_client
= clp
->cl_rpcclient
,
6810 .rpc_message
= &msg
,
6811 .callback_ops
= &nfs41_sequence_ops
,
6812 .flags
= RPC_TASK_ASYNC
| RPC_TASK_TIMEOUT
,
6815 if (!atomic_inc_not_zero(&clp
->cl_count
))
6816 return ERR_PTR(-EIO
);
6817 calldata
= kzalloc(sizeof(*calldata
), GFP_NOFS
);
6818 if (calldata
== NULL
) {
6819 nfs_put_client(clp
);
6820 return ERR_PTR(-ENOMEM
);
6822 nfs4_init_sequence(&calldata
->args
, &calldata
->res
, 0);
6824 nfs4_set_sequence_privileged(&calldata
->args
);
6825 msg
.rpc_argp
= &calldata
->args
;
6826 msg
.rpc_resp
= &calldata
->res
;
6827 calldata
->clp
= clp
;
6828 task_setup_data
.callback_data
= calldata
;
6830 return rpc_run_task(&task_setup_data
);
6833 static int nfs41_proc_async_sequence(struct nfs_client
*clp
, struct rpc_cred
*cred
, unsigned renew_flags
)
6835 struct rpc_task
*task
;
6838 if ((renew_flags
& NFS4_RENEW_TIMEOUT
) == 0)
6840 task
= _nfs41_proc_sequence(clp
, cred
, false);
6842 ret
= PTR_ERR(task
);
6844 rpc_put_task_async(task
);
6845 dprintk("<-- %s status=%d\n", __func__
, ret
);
6849 static int nfs4_proc_sequence(struct nfs_client
*clp
, struct rpc_cred
*cred
)
6851 struct rpc_task
*task
;
6854 task
= _nfs41_proc_sequence(clp
, cred
, true);
6856 ret
= PTR_ERR(task
);
6859 ret
= rpc_wait_for_completion_task(task
);
6861 struct nfs4_sequence_res
*res
= task
->tk_msg
.rpc_resp
;
6863 if (task
->tk_status
== 0)
6864 nfs41_handle_sequence_flag_errors(clp
, res
->sr_status_flags
);
6865 ret
= task
->tk_status
;
6869 dprintk("<-- %s status=%d\n", __func__
, ret
);
6873 struct nfs4_reclaim_complete_data
{
6874 struct nfs_client
*clp
;
6875 struct nfs41_reclaim_complete_args arg
;
6876 struct nfs41_reclaim_complete_res res
;
6879 static void nfs4_reclaim_complete_prepare(struct rpc_task
*task
, void *data
)
6881 struct nfs4_reclaim_complete_data
*calldata
= data
;
6883 nfs41_setup_sequence(calldata
->clp
->cl_session
,
6884 &calldata
->arg
.seq_args
,
6885 &calldata
->res
.seq_res
,
6889 static int nfs41_reclaim_complete_handle_errors(struct rpc_task
*task
, struct nfs_client
*clp
)
6891 switch(task
->tk_status
) {
6893 case -NFS4ERR_COMPLETE_ALREADY
:
6894 case -NFS4ERR_WRONG_CRED
: /* What to do here? */
6896 case -NFS4ERR_DELAY
:
6897 rpc_delay(task
, NFS4_POLL_RETRY_MAX
);
6899 case -NFS4ERR_RETRY_UNCACHED_REP
:
6902 nfs4_schedule_lease_recovery(clp
);
6907 static void nfs4_reclaim_complete_done(struct rpc_task
*task
, void *data
)
6909 struct nfs4_reclaim_complete_data
*calldata
= data
;
6910 struct nfs_client
*clp
= calldata
->clp
;
6911 struct nfs4_sequence_res
*res
= &calldata
->res
.seq_res
;
6913 dprintk("--> %s\n", __func__
);
6914 if (!nfs41_sequence_done(task
, res
))
6917 trace_nfs4_reclaim_complete(clp
, task
->tk_status
);
6918 if (nfs41_reclaim_complete_handle_errors(task
, clp
) == -EAGAIN
) {
6919 rpc_restart_call_prepare(task
);
6922 dprintk("<-- %s\n", __func__
);
6925 static void nfs4_free_reclaim_complete_data(void *data
)
6927 struct nfs4_reclaim_complete_data
*calldata
= data
;
6932 static const struct rpc_call_ops nfs4_reclaim_complete_call_ops
= {
6933 .rpc_call_prepare
= nfs4_reclaim_complete_prepare
,
6934 .rpc_call_done
= nfs4_reclaim_complete_done
,
6935 .rpc_release
= nfs4_free_reclaim_complete_data
,
6939 * Issue a global reclaim complete.
6941 static int nfs41_proc_reclaim_complete(struct nfs_client
*clp
,
6942 struct rpc_cred
*cred
)
6944 struct nfs4_reclaim_complete_data
*calldata
;
6945 struct rpc_task
*task
;
6946 struct rpc_message msg
= {
6947 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RECLAIM_COMPLETE
],
6950 struct rpc_task_setup task_setup_data
= {
6951 .rpc_client
= clp
->cl_rpcclient
,
6952 .rpc_message
= &msg
,
6953 .callback_ops
= &nfs4_reclaim_complete_call_ops
,
6954 .flags
= RPC_TASK_ASYNC
,
6956 int status
= -ENOMEM
;
6958 dprintk("--> %s\n", __func__
);
6959 calldata
= kzalloc(sizeof(*calldata
), GFP_NOFS
);
6960 if (calldata
== NULL
)
6962 calldata
->clp
= clp
;
6963 calldata
->arg
.one_fs
= 0;
6965 nfs4_init_sequence(&calldata
->arg
.seq_args
, &calldata
->res
.seq_res
, 0);
6966 nfs4_set_sequence_privileged(&calldata
->arg
.seq_args
);
6967 msg
.rpc_argp
= &calldata
->arg
;
6968 msg
.rpc_resp
= &calldata
->res
;
6969 task_setup_data
.callback_data
= calldata
;
6970 task
= rpc_run_task(&task_setup_data
);
6972 status
= PTR_ERR(task
);
6975 status
= nfs4_wait_for_completion_rpc_task(task
);
6977 status
= task
->tk_status
;
6981 dprintk("<-- %s status=%d\n", __func__
, status
);
6986 nfs4_layoutget_prepare(struct rpc_task
*task
, void *calldata
)
6988 struct nfs4_layoutget
*lgp
= calldata
;
6989 struct nfs_server
*server
= NFS_SERVER(lgp
->args
.inode
);
6990 struct nfs4_session
*session
= nfs4_get_session(server
);
6992 dprintk("--> %s\n", __func__
);
6993 /* Note the is a race here, where a CB_LAYOUTRECALL can come in
6994 * right now covering the LAYOUTGET we are about to send.
6995 * However, that is not so catastrophic, and there seems
6996 * to be no way to prevent it completely.
6998 if (nfs41_setup_sequence(session
, &lgp
->args
.seq_args
,
6999 &lgp
->res
.seq_res
, task
))
7001 if (pnfs_choose_layoutget_stateid(&lgp
->args
.stateid
,
7002 NFS_I(lgp
->args
.inode
)->layout
,
7003 lgp
->args
.ctx
->state
)) {
7004 rpc_exit(task
, NFS4_OK
);
7008 static void nfs4_layoutget_done(struct rpc_task
*task
, void *calldata
)
7010 struct nfs4_layoutget
*lgp
= calldata
;
7011 struct inode
*inode
= lgp
->args
.inode
;
7012 struct nfs_server
*server
= NFS_SERVER(inode
);
7013 struct pnfs_layout_hdr
*lo
;
7014 struct nfs4_state
*state
= NULL
;
7015 unsigned long timeo
, giveup
;
7017 dprintk("--> %s\n", __func__
);
7019 if (!nfs41_sequence_done(task
, &lgp
->res
.seq_res
))
7022 switch (task
->tk_status
) {
7025 case -NFS4ERR_LAYOUTTRYLATER
:
7026 case -NFS4ERR_RECALLCONFLICT
:
7027 timeo
= rpc_get_timeout(task
->tk_client
);
7028 giveup
= lgp
->args
.timestamp
+ timeo
;
7029 if (time_after(giveup
, jiffies
))
7030 task
->tk_status
= -NFS4ERR_DELAY
;
7032 case -NFS4ERR_EXPIRED
:
7033 case -NFS4ERR_BAD_STATEID
:
7034 spin_lock(&inode
->i_lock
);
7035 lo
= NFS_I(inode
)->layout
;
7036 if (!lo
|| list_empty(&lo
->plh_segs
)) {
7037 spin_unlock(&inode
->i_lock
);
7038 /* If the open stateid was bad, then recover it. */
7039 state
= lgp
->args
.ctx
->state
;
7043 pnfs_mark_matching_lsegs_invalid(lo
, &head
, NULL
);
7044 spin_unlock(&inode
->i_lock
);
7045 /* Mark the bad layout state as invalid, then
7046 * retry using the open stateid. */
7047 pnfs_free_lseg_list(&head
);
7050 if (nfs4_async_handle_error(task
, server
, state
) == -EAGAIN
)
7051 rpc_restart_call_prepare(task
);
7053 dprintk("<-- %s\n", __func__
);
7056 static size_t max_response_pages(struct nfs_server
*server
)
7058 u32 max_resp_sz
= server
->nfs_client
->cl_session
->fc_attrs
.max_resp_sz
;
7059 return nfs_page_array_len(0, max_resp_sz
);
7062 static void nfs4_free_pages(struct page
**pages
, size_t size
)
7069 for (i
= 0; i
< size
; i
++) {
7072 __free_page(pages
[i
]);
7077 static struct page
**nfs4_alloc_pages(size_t size
, gfp_t gfp_flags
)
7079 struct page
**pages
;
7082 pages
= kcalloc(size
, sizeof(struct page
*), gfp_flags
);
7084 dprintk("%s: can't alloc array of %zu pages\n", __func__
, size
);
7088 for (i
= 0; i
< size
; i
++) {
7089 pages
[i
] = alloc_page(gfp_flags
);
7091 dprintk("%s: failed to allocate page\n", __func__
);
7092 nfs4_free_pages(pages
, size
);
7100 static void nfs4_layoutget_release(void *calldata
)
7102 struct nfs4_layoutget
*lgp
= calldata
;
7103 struct inode
*inode
= lgp
->args
.inode
;
7104 struct nfs_server
*server
= NFS_SERVER(inode
);
7105 size_t max_pages
= max_response_pages(server
);
7107 dprintk("--> %s\n", __func__
);
7108 nfs4_free_pages(lgp
->args
.layout
.pages
, max_pages
);
7109 pnfs_put_layout_hdr(NFS_I(inode
)->layout
);
7110 put_nfs_open_context(lgp
->args
.ctx
);
7112 dprintk("<-- %s\n", __func__
);
7115 static const struct rpc_call_ops nfs4_layoutget_call_ops
= {
7116 .rpc_call_prepare
= nfs4_layoutget_prepare
,
7117 .rpc_call_done
= nfs4_layoutget_done
,
7118 .rpc_release
= nfs4_layoutget_release
,
7121 struct pnfs_layout_segment
*
7122 nfs4_proc_layoutget(struct nfs4_layoutget
*lgp
, gfp_t gfp_flags
)
7124 struct inode
*inode
= lgp
->args
.inode
;
7125 struct nfs_server
*server
= NFS_SERVER(inode
);
7126 size_t max_pages
= max_response_pages(server
);
7127 struct rpc_task
*task
;
7128 struct rpc_message msg
= {
7129 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LAYOUTGET
],
7130 .rpc_argp
= &lgp
->args
,
7131 .rpc_resp
= &lgp
->res
,
7132 .rpc_cred
= lgp
->cred
,
7134 struct rpc_task_setup task_setup_data
= {
7135 .rpc_client
= server
->client
,
7136 .rpc_message
= &msg
,
7137 .callback_ops
= &nfs4_layoutget_call_ops
,
7138 .callback_data
= lgp
,
7139 .flags
= RPC_TASK_ASYNC
,
7141 struct pnfs_layout_segment
*lseg
= NULL
;
7144 dprintk("--> %s\n", __func__
);
7146 lgp
->args
.layout
.pages
= nfs4_alloc_pages(max_pages
, gfp_flags
);
7147 if (!lgp
->args
.layout
.pages
) {
7148 nfs4_layoutget_release(lgp
);
7149 return ERR_PTR(-ENOMEM
);
7151 lgp
->args
.layout
.pglen
= max_pages
* PAGE_SIZE
;
7152 lgp
->args
.timestamp
= jiffies
;
7154 lgp
->res
.layoutp
= &lgp
->args
.layout
;
7155 lgp
->res
.seq_res
.sr_slot
= NULL
;
7156 nfs4_init_sequence(&lgp
->args
.seq_args
, &lgp
->res
.seq_res
, 0);
7158 /* nfs4_layoutget_release calls pnfs_put_layout_hdr */
7159 pnfs_get_layout_hdr(NFS_I(inode
)->layout
);
7161 task
= rpc_run_task(&task_setup_data
);
7163 return ERR_CAST(task
);
7164 status
= nfs4_wait_for_completion_rpc_task(task
);
7166 status
= task
->tk_status
;
7167 trace_nfs4_layoutget(lgp
->args
.ctx
,
7171 /* if layoutp->len is 0, nfs4_layoutget_prepare called rpc_exit */
7172 if (status
== 0 && lgp
->res
.layoutp
->len
)
7173 lseg
= pnfs_layout_process(lgp
);
7175 dprintk("<-- %s status=%d\n", __func__
, status
);
7177 return ERR_PTR(status
);
7182 nfs4_layoutreturn_prepare(struct rpc_task
*task
, void *calldata
)
7184 struct nfs4_layoutreturn
*lrp
= calldata
;
7186 dprintk("--> %s\n", __func__
);
7187 nfs41_setup_sequence(lrp
->clp
->cl_session
,
7188 &lrp
->args
.seq_args
,
7193 static void nfs4_layoutreturn_done(struct rpc_task
*task
, void *calldata
)
7195 struct nfs4_layoutreturn
*lrp
= calldata
;
7196 struct nfs_server
*server
;
7198 dprintk("--> %s\n", __func__
);
7200 if (!nfs41_sequence_done(task
, &lrp
->res
.seq_res
))
7203 server
= NFS_SERVER(lrp
->args
.inode
);
7204 if (nfs4_async_handle_error(task
, server
, NULL
) == -EAGAIN
) {
7205 rpc_restart_call_prepare(task
);
7208 dprintk("<-- %s\n", __func__
);
7211 static void nfs4_layoutreturn_release(void *calldata
)
7213 struct nfs4_layoutreturn
*lrp
= calldata
;
7214 struct pnfs_layout_hdr
*lo
= lrp
->args
.layout
;
7216 dprintk("--> %s\n", __func__
);
7217 spin_lock(&lo
->plh_inode
->i_lock
);
7218 if (lrp
->res
.lrs_present
)
7219 pnfs_set_layout_stateid(lo
, &lrp
->res
.stateid
, true);
7220 lo
->plh_block_lgets
--;
7221 spin_unlock(&lo
->plh_inode
->i_lock
);
7222 pnfs_put_layout_hdr(lrp
->args
.layout
);
7224 dprintk("<-- %s\n", __func__
);
7227 static const struct rpc_call_ops nfs4_layoutreturn_call_ops
= {
7228 .rpc_call_prepare
= nfs4_layoutreturn_prepare
,
7229 .rpc_call_done
= nfs4_layoutreturn_done
,
7230 .rpc_release
= nfs4_layoutreturn_release
,
7233 int nfs4_proc_layoutreturn(struct nfs4_layoutreturn
*lrp
)
7235 struct rpc_task
*task
;
7236 struct rpc_message msg
= {
7237 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LAYOUTRETURN
],
7238 .rpc_argp
= &lrp
->args
,
7239 .rpc_resp
= &lrp
->res
,
7240 .rpc_cred
= lrp
->cred
,
7242 struct rpc_task_setup task_setup_data
= {
7243 .rpc_client
= NFS_SERVER(lrp
->args
.inode
)->client
,
7244 .rpc_message
= &msg
,
7245 .callback_ops
= &nfs4_layoutreturn_call_ops
,
7246 .callback_data
= lrp
,
7250 dprintk("--> %s\n", __func__
);
7251 nfs4_init_sequence(&lrp
->args
.seq_args
, &lrp
->res
.seq_res
, 1);
7252 task
= rpc_run_task(&task_setup_data
);
7254 return PTR_ERR(task
);
7255 status
= task
->tk_status
;
7256 trace_nfs4_layoutreturn(lrp
->args
.inode
, status
);
7257 dprintk("<-- %s status=%d\n", __func__
, status
);
7263 * Retrieve the list of Data Server devices from the MDS.
7265 static int _nfs4_getdevicelist(struct nfs_server
*server
,
7266 const struct nfs_fh
*fh
,
7267 struct pnfs_devicelist
*devlist
)
7269 struct nfs4_getdevicelist_args args
= {
7271 .layoutclass
= server
->pnfs_curr_ld
->id
,
7273 struct nfs4_getdevicelist_res res
= {
7276 struct rpc_message msg
= {
7277 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GETDEVICELIST
],
7283 dprintk("--> %s\n", __func__
);
7284 status
= nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
,
7286 dprintk("<-- %s status=%d\n", __func__
, status
);
7290 int nfs4_proc_getdevicelist(struct nfs_server
*server
,
7291 const struct nfs_fh
*fh
,
7292 struct pnfs_devicelist
*devlist
)
7294 struct nfs4_exception exception
= { };
7298 err
= nfs4_handle_exception(server
,
7299 _nfs4_getdevicelist(server
, fh
, devlist
),
7301 } while (exception
.retry
);
7303 dprintk("%s: err=%d, num_devs=%u\n", __func__
,
7304 err
, devlist
->num_devs
);
7308 EXPORT_SYMBOL_GPL(nfs4_proc_getdevicelist
);
7311 _nfs4_proc_getdeviceinfo(struct nfs_server
*server
,
7312 struct pnfs_device
*pdev
,
7313 struct rpc_cred
*cred
)
7315 struct nfs4_getdeviceinfo_args args
= {
7318 struct nfs4_getdeviceinfo_res res
= {
7321 struct rpc_message msg
= {
7322 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GETDEVICEINFO
],
7329 dprintk("--> %s\n", __func__
);
7330 status
= nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
7331 dprintk("<-- %s status=%d\n", __func__
, status
);
7336 int nfs4_proc_getdeviceinfo(struct nfs_server
*server
,
7337 struct pnfs_device
*pdev
,
7338 struct rpc_cred
*cred
)
7340 struct nfs4_exception exception
= { };
7344 err
= nfs4_handle_exception(server
,
7345 _nfs4_proc_getdeviceinfo(server
, pdev
, cred
),
7347 } while (exception
.retry
);
7350 EXPORT_SYMBOL_GPL(nfs4_proc_getdeviceinfo
);
7352 static void nfs4_layoutcommit_prepare(struct rpc_task
*task
, void *calldata
)
7354 struct nfs4_layoutcommit_data
*data
= calldata
;
7355 struct nfs_server
*server
= NFS_SERVER(data
->args
.inode
);
7356 struct nfs4_session
*session
= nfs4_get_session(server
);
7358 nfs41_setup_sequence(session
,
7359 &data
->args
.seq_args
,
7365 nfs4_layoutcommit_done(struct rpc_task
*task
, void *calldata
)
7367 struct nfs4_layoutcommit_data
*data
= calldata
;
7368 struct nfs_server
*server
= NFS_SERVER(data
->args
.inode
);
7370 if (!nfs41_sequence_done(task
, &data
->res
.seq_res
))
7373 switch (task
->tk_status
) { /* Just ignore these failures */
7374 case -NFS4ERR_DELEG_REVOKED
: /* layout was recalled */
7375 case -NFS4ERR_BADIOMODE
: /* no IOMODE_RW layout for range */
7376 case -NFS4ERR_BADLAYOUT
: /* no layout */
7377 case -NFS4ERR_GRACE
: /* loca_recalim always false */
7378 task
->tk_status
= 0;
7381 nfs_post_op_update_inode_force_wcc(data
->args
.inode
,
7385 if (nfs4_async_handle_error(task
, server
, NULL
) == -EAGAIN
) {
7386 rpc_restart_call_prepare(task
);
7392 static void nfs4_layoutcommit_release(void *calldata
)
7394 struct nfs4_layoutcommit_data
*data
= calldata
;
7396 pnfs_cleanup_layoutcommit(data
);
7397 put_rpccred(data
->cred
);
7401 static const struct rpc_call_ops nfs4_layoutcommit_ops
= {
7402 .rpc_call_prepare
= nfs4_layoutcommit_prepare
,
7403 .rpc_call_done
= nfs4_layoutcommit_done
,
7404 .rpc_release
= nfs4_layoutcommit_release
,
7408 nfs4_proc_layoutcommit(struct nfs4_layoutcommit_data
*data
, bool sync
)
7410 struct rpc_message msg
= {
7411 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LAYOUTCOMMIT
],
7412 .rpc_argp
= &data
->args
,
7413 .rpc_resp
= &data
->res
,
7414 .rpc_cred
= data
->cred
,
7416 struct rpc_task_setup task_setup_data
= {
7417 .task
= &data
->task
,
7418 .rpc_client
= NFS_CLIENT(data
->args
.inode
),
7419 .rpc_message
= &msg
,
7420 .callback_ops
= &nfs4_layoutcommit_ops
,
7421 .callback_data
= data
,
7422 .flags
= RPC_TASK_ASYNC
,
7424 struct rpc_task
*task
;
7427 dprintk("NFS: %4d initiating layoutcommit call. sync %d "
7428 "lbw: %llu inode %lu\n",
7429 data
->task
.tk_pid
, sync
,
7430 data
->args
.lastbytewritten
,
7431 data
->args
.inode
->i_ino
);
7433 nfs4_init_sequence(&data
->args
.seq_args
, &data
->res
.seq_res
, 1);
7434 task
= rpc_run_task(&task_setup_data
);
7436 return PTR_ERR(task
);
7439 status
= nfs4_wait_for_completion_rpc_task(task
);
7442 status
= task
->tk_status
;
7443 trace_nfs4_layoutcommit(data
->args
.inode
, status
);
7445 dprintk("%s: status %d\n", __func__
, status
);
7451 * Use the state managment nfs_client cl_rpcclient, which uses krb5i (if
7452 * possible) as per RFC3530bis and RFC5661 Security Considerations sections
7455 _nfs41_proc_secinfo_no_name(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
7456 struct nfs_fsinfo
*info
, struct nfs4_secinfo_flavors
*flavors
)
7458 struct nfs41_secinfo_no_name_args args
= {
7459 .style
= SECINFO_STYLE_CURRENT_FH
,
7461 struct nfs4_secinfo_res res
= {
7464 struct rpc_message msg
= {
7465 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SECINFO_NO_NAME
],
7469 return nfs4_call_sync(server
->nfs_client
->cl_rpcclient
, server
, &msg
,
7470 &args
.seq_args
, &res
.seq_res
, 0);
7474 nfs41_proc_secinfo_no_name(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
7475 struct nfs_fsinfo
*info
, struct nfs4_secinfo_flavors
*flavors
)
7477 struct nfs4_exception exception
= { };
7480 err
= _nfs41_proc_secinfo_no_name(server
, fhandle
, info
, flavors
);
7483 case -NFS4ERR_WRONGSEC
:
7484 case -NFS4ERR_NOTSUPP
:
7487 err
= nfs4_handle_exception(server
, err
, &exception
);
7489 } while (exception
.retry
);
7495 nfs41_find_root_sec(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
7496 struct nfs_fsinfo
*info
)
7500 rpc_authflavor_t flavor
;
7501 struct nfs4_secinfo_flavors
*flavors
;
7503 page
= alloc_page(GFP_KERNEL
);
7509 flavors
= page_address(page
);
7510 err
= nfs41_proc_secinfo_no_name(server
, fhandle
, info
, flavors
);
7513 * Fall back on "guess and check" method if
7514 * the server doesn't support SECINFO_NO_NAME
7516 if (err
== -NFS4ERR_WRONGSEC
|| err
== -NFS4ERR_NOTSUPP
) {
7517 err
= nfs4_find_root_sec(server
, fhandle
, info
);
7523 flavor
= nfs_find_best_sec(flavors
);
7525 err
= nfs4_lookup_root_sec(server
, fhandle
, info
, flavor
);
7535 static int _nfs41_test_stateid(struct nfs_server
*server
,
7536 nfs4_stateid
*stateid
,
7537 struct rpc_cred
*cred
)
7540 struct nfs41_test_stateid_args args
= {
7543 struct nfs41_test_stateid_res res
;
7544 struct rpc_message msg
= {
7545 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_TEST_STATEID
],
7551 dprintk("NFS call test_stateid %p\n", stateid
);
7552 nfs4_init_sequence(&args
.seq_args
, &res
.seq_res
, 0);
7553 nfs4_set_sequence_privileged(&args
.seq_args
);
7554 status
= nfs4_call_sync_sequence(server
->client
, server
, &msg
,
7555 &args
.seq_args
, &res
.seq_res
);
7556 if (status
!= NFS_OK
) {
7557 dprintk("NFS reply test_stateid: failed, %d\n", status
);
7560 dprintk("NFS reply test_stateid: succeeded, %d\n", -res
.status
);
7565 * nfs41_test_stateid - perform a TEST_STATEID operation
7567 * @server: server / transport on which to perform the operation
7568 * @stateid: state ID to test
7571 * Returns NFS_OK if the server recognizes that "stateid" is valid.
7572 * Otherwise a negative NFS4ERR value is returned if the operation
7573 * failed or the state ID is not currently valid.
7575 static int nfs41_test_stateid(struct nfs_server
*server
,
7576 nfs4_stateid
*stateid
,
7577 struct rpc_cred
*cred
)
7579 struct nfs4_exception exception
= { };
7582 err
= _nfs41_test_stateid(server
, stateid
, cred
);
7583 if (err
!= -NFS4ERR_DELAY
)
7585 nfs4_handle_exception(server
, err
, &exception
);
7586 } while (exception
.retry
);
7590 struct nfs_free_stateid_data
{
7591 struct nfs_server
*server
;
7592 struct nfs41_free_stateid_args args
;
7593 struct nfs41_free_stateid_res res
;
7596 static void nfs41_free_stateid_prepare(struct rpc_task
*task
, void *calldata
)
7598 struct nfs_free_stateid_data
*data
= calldata
;
7599 nfs41_setup_sequence(nfs4_get_session(data
->server
),
7600 &data
->args
.seq_args
,
7605 static void nfs41_free_stateid_done(struct rpc_task
*task
, void *calldata
)
7607 struct nfs_free_stateid_data
*data
= calldata
;
7609 nfs41_sequence_done(task
, &data
->res
.seq_res
);
7611 switch (task
->tk_status
) {
7612 case -NFS4ERR_DELAY
:
7613 if (nfs4_async_handle_error(task
, data
->server
, NULL
) == -EAGAIN
)
7614 rpc_restart_call_prepare(task
);
7618 static void nfs41_free_stateid_release(void *calldata
)
7623 static const struct rpc_call_ops nfs41_free_stateid_ops
= {
7624 .rpc_call_prepare
= nfs41_free_stateid_prepare
,
7625 .rpc_call_done
= nfs41_free_stateid_done
,
7626 .rpc_release
= nfs41_free_stateid_release
,
7629 static struct rpc_task
*_nfs41_free_stateid(struct nfs_server
*server
,
7630 nfs4_stateid
*stateid
,
7631 struct rpc_cred
*cred
,
7634 struct rpc_message msg
= {
7635 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_FREE_STATEID
],
7638 struct rpc_task_setup task_setup
= {
7639 .rpc_client
= server
->client
,
7640 .rpc_message
= &msg
,
7641 .callback_ops
= &nfs41_free_stateid_ops
,
7642 .flags
= RPC_TASK_ASYNC
,
7644 struct nfs_free_stateid_data
*data
;
7646 dprintk("NFS call free_stateid %p\n", stateid
);
7647 data
= kmalloc(sizeof(*data
), GFP_NOFS
);
7649 return ERR_PTR(-ENOMEM
);
7650 data
->server
= server
;
7651 nfs4_stateid_copy(&data
->args
.stateid
, stateid
);
7653 task_setup
.callback_data
= data
;
7655 msg
.rpc_argp
= &data
->args
;
7656 msg
.rpc_resp
= &data
->res
;
7657 nfs4_init_sequence(&data
->args
.seq_args
, &data
->res
.seq_res
, 0);
7659 nfs4_set_sequence_privileged(&data
->args
.seq_args
);
7661 return rpc_run_task(&task_setup
);
7665 * nfs41_free_stateid - perform a FREE_STATEID operation
7667 * @server: server / transport on which to perform the operation
7668 * @stateid: state ID to release
7671 * Returns NFS_OK if the server freed "stateid". Otherwise a
7672 * negative NFS4ERR value is returned.
7674 static int nfs41_free_stateid(struct nfs_server
*server
,
7675 nfs4_stateid
*stateid
,
7676 struct rpc_cred
*cred
)
7678 struct rpc_task
*task
;
7681 task
= _nfs41_free_stateid(server
, stateid
, cred
, true);
7683 return PTR_ERR(task
);
7684 ret
= rpc_wait_for_completion_task(task
);
7686 ret
= task
->tk_status
;
7691 static int nfs41_free_lock_state(struct nfs_server
*server
, struct nfs4_lock_state
*lsp
)
7693 struct rpc_task
*task
;
7694 struct rpc_cred
*cred
= lsp
->ls_state
->owner
->so_cred
;
7696 task
= _nfs41_free_stateid(server
, &lsp
->ls_stateid
, cred
, false);
7697 nfs4_free_lock_state(server
, lsp
);
7699 return PTR_ERR(task
);
7704 static bool nfs41_match_stateid(const nfs4_stateid
*s1
,
7705 const nfs4_stateid
*s2
)
7707 if (memcmp(s1
->other
, s2
->other
, sizeof(s1
->other
)) != 0)
7710 if (s1
->seqid
== s2
->seqid
)
7712 if (s1
->seqid
== 0 || s2
->seqid
== 0)
7718 #endif /* CONFIG_NFS_V4_1 */
7720 static bool nfs4_match_stateid(const nfs4_stateid
*s1
,
7721 const nfs4_stateid
*s2
)
7723 return nfs4_stateid_match(s1
, s2
);
7727 static const struct nfs4_state_recovery_ops nfs40_reboot_recovery_ops
= {
7728 .owner_flag_bit
= NFS_OWNER_RECLAIM_REBOOT
,
7729 .state_flag_bit
= NFS_STATE_RECLAIM_REBOOT
,
7730 .recover_open
= nfs4_open_reclaim
,
7731 .recover_lock
= nfs4_lock_reclaim
,
7732 .establish_clid
= nfs4_init_clientid
,
7733 .detect_trunking
= nfs40_discover_server_trunking
,
7736 #if defined(CONFIG_NFS_V4_1)
7737 static const struct nfs4_state_recovery_ops nfs41_reboot_recovery_ops
= {
7738 .owner_flag_bit
= NFS_OWNER_RECLAIM_REBOOT
,
7739 .state_flag_bit
= NFS_STATE_RECLAIM_REBOOT
,
7740 .recover_open
= nfs4_open_reclaim
,
7741 .recover_lock
= nfs4_lock_reclaim
,
7742 .establish_clid
= nfs41_init_clientid
,
7743 .reclaim_complete
= nfs41_proc_reclaim_complete
,
7744 .detect_trunking
= nfs41_discover_server_trunking
,
7746 #endif /* CONFIG_NFS_V4_1 */
7748 static const struct nfs4_state_recovery_ops nfs40_nograce_recovery_ops
= {
7749 .owner_flag_bit
= NFS_OWNER_RECLAIM_NOGRACE
,
7750 .state_flag_bit
= NFS_STATE_RECLAIM_NOGRACE
,
7751 .recover_open
= nfs4_open_expired
,
7752 .recover_lock
= nfs4_lock_expired
,
7753 .establish_clid
= nfs4_init_clientid
,
7756 #if defined(CONFIG_NFS_V4_1)
7757 static const struct nfs4_state_recovery_ops nfs41_nograce_recovery_ops
= {
7758 .owner_flag_bit
= NFS_OWNER_RECLAIM_NOGRACE
,
7759 .state_flag_bit
= NFS_STATE_RECLAIM_NOGRACE
,
7760 .recover_open
= nfs41_open_expired
,
7761 .recover_lock
= nfs41_lock_expired
,
7762 .establish_clid
= nfs41_init_clientid
,
7764 #endif /* CONFIG_NFS_V4_1 */
7766 static const struct nfs4_state_maintenance_ops nfs40_state_renewal_ops
= {
7767 .sched_state_renewal
= nfs4_proc_async_renew
,
7768 .get_state_renewal_cred_locked
= nfs4_get_renew_cred_locked
,
7769 .renew_lease
= nfs4_proc_renew
,
7772 #if defined(CONFIG_NFS_V4_1)
7773 static const struct nfs4_state_maintenance_ops nfs41_state_renewal_ops
= {
7774 .sched_state_renewal
= nfs41_proc_async_sequence
,
7775 .get_state_renewal_cred_locked
= nfs4_get_machine_cred_locked
,
7776 .renew_lease
= nfs4_proc_sequence
,
7780 static const struct nfs4_minor_version_ops nfs_v4_0_minor_ops
= {
7782 .init_caps
= NFS_CAP_READDIRPLUS
7783 | NFS_CAP_ATOMIC_OPEN
7784 | NFS_CAP_CHANGE_ATTR
7785 | NFS_CAP_POSIX_LOCK
,
7786 .init_client
= nfs40_init_client
,
7787 .shutdown_client
= nfs40_shutdown_client
,
7788 .match_stateid
= nfs4_match_stateid
,
7789 .find_root_sec
= nfs4_find_root_sec
,
7790 .free_lock_state
= nfs4_release_lockowner
,
7791 .call_sync_ops
= &nfs40_call_sync_ops
,
7792 .reboot_recovery_ops
= &nfs40_reboot_recovery_ops
,
7793 .nograce_recovery_ops
= &nfs40_nograce_recovery_ops
,
7794 .state_renewal_ops
= &nfs40_state_renewal_ops
,
7797 #if defined(CONFIG_NFS_V4_1)
7798 static const struct nfs4_minor_version_ops nfs_v4_1_minor_ops
= {
7800 .init_caps
= NFS_CAP_READDIRPLUS
7801 | NFS_CAP_ATOMIC_OPEN
7802 | NFS_CAP_CHANGE_ATTR
7803 | NFS_CAP_POSIX_LOCK
7804 | NFS_CAP_STATEID_NFSV41
7805 | NFS_CAP_ATOMIC_OPEN_V1
,
7806 .init_client
= nfs41_init_client
,
7807 .shutdown_client
= nfs41_shutdown_client
,
7808 .match_stateid
= nfs41_match_stateid
,
7809 .find_root_sec
= nfs41_find_root_sec
,
7810 .free_lock_state
= nfs41_free_lock_state
,
7811 .call_sync_ops
= &nfs41_call_sync_ops
,
7812 .reboot_recovery_ops
= &nfs41_reboot_recovery_ops
,
7813 .nograce_recovery_ops
= &nfs41_nograce_recovery_ops
,
7814 .state_renewal_ops
= &nfs41_state_renewal_ops
,
7818 #if defined(CONFIG_NFS_V4_2)
7819 static const struct nfs4_minor_version_ops nfs_v4_2_minor_ops
= {
7821 .init_caps
= NFS_CAP_READDIRPLUS
7822 | NFS_CAP_ATOMIC_OPEN
7823 | NFS_CAP_CHANGE_ATTR
7824 | NFS_CAP_POSIX_LOCK
7825 | NFS_CAP_STATEID_NFSV41
7826 | NFS_CAP_ATOMIC_OPEN_V1
,
7827 .init_client
= nfs41_init_client
,
7828 .shutdown_client
= nfs41_shutdown_client
,
7829 .match_stateid
= nfs41_match_stateid
,
7830 .find_root_sec
= nfs41_find_root_sec
,
7831 .free_lock_state
= nfs41_free_lock_state
,
7832 .call_sync_ops
= &nfs41_call_sync_ops
,
7833 .reboot_recovery_ops
= &nfs41_reboot_recovery_ops
,
7834 .nograce_recovery_ops
= &nfs41_nograce_recovery_ops
,
7835 .state_renewal_ops
= &nfs41_state_renewal_ops
,
7839 const struct nfs4_minor_version_ops
*nfs_v4_minor_ops
[] = {
7840 [0] = &nfs_v4_0_minor_ops
,
7841 #if defined(CONFIG_NFS_V4_1)
7842 [1] = &nfs_v4_1_minor_ops
,
7844 #if defined(CONFIG_NFS_V4_2)
7845 [2] = &nfs_v4_2_minor_ops
,
7849 static const struct inode_operations nfs4_dir_inode_operations
= {
7850 .create
= nfs_create
,
7851 .lookup
= nfs_lookup
,
7852 .atomic_open
= nfs_atomic_open
,
7854 .unlink
= nfs_unlink
,
7855 .symlink
= nfs_symlink
,
7859 .rename
= nfs_rename
,
7860 .permission
= nfs_permission
,
7861 .getattr
= nfs_getattr
,
7862 .setattr
= nfs_setattr
,
7863 .getxattr
= generic_getxattr
,
7864 .setxattr
= generic_setxattr
,
7865 .listxattr
= generic_listxattr
,
7866 .removexattr
= generic_removexattr
,
7869 static const struct inode_operations nfs4_file_inode_operations
= {
7870 .permission
= nfs_permission
,
7871 .getattr
= nfs_getattr
,
7872 .setattr
= nfs_setattr
,
7873 .getxattr
= generic_getxattr
,
7874 .setxattr
= generic_setxattr
,
7875 .listxattr
= generic_listxattr
,
7876 .removexattr
= generic_removexattr
,
7879 const struct nfs_rpc_ops nfs_v4_clientops
= {
7880 .version
= 4, /* protocol version */
7881 .dentry_ops
= &nfs4_dentry_operations
,
7882 .dir_inode_ops
= &nfs4_dir_inode_operations
,
7883 .file_inode_ops
= &nfs4_file_inode_operations
,
7884 .file_ops
= &nfs4_file_operations
,
7885 .getroot
= nfs4_proc_get_root
,
7886 .submount
= nfs4_submount
,
7887 .try_mount
= nfs4_try_mount
,
7888 .getattr
= nfs4_proc_getattr
,
7889 .setattr
= nfs4_proc_setattr
,
7890 .lookup
= nfs4_proc_lookup
,
7891 .access
= nfs4_proc_access
,
7892 .readlink
= nfs4_proc_readlink
,
7893 .create
= nfs4_proc_create
,
7894 .remove
= nfs4_proc_remove
,
7895 .unlink_setup
= nfs4_proc_unlink_setup
,
7896 .unlink_rpc_prepare
= nfs4_proc_unlink_rpc_prepare
,
7897 .unlink_done
= nfs4_proc_unlink_done
,
7898 .rename
= nfs4_proc_rename
,
7899 .rename_setup
= nfs4_proc_rename_setup
,
7900 .rename_rpc_prepare
= nfs4_proc_rename_rpc_prepare
,
7901 .rename_done
= nfs4_proc_rename_done
,
7902 .link
= nfs4_proc_link
,
7903 .symlink
= nfs4_proc_symlink
,
7904 .mkdir
= nfs4_proc_mkdir
,
7905 .rmdir
= nfs4_proc_remove
,
7906 .readdir
= nfs4_proc_readdir
,
7907 .mknod
= nfs4_proc_mknod
,
7908 .statfs
= nfs4_proc_statfs
,
7909 .fsinfo
= nfs4_proc_fsinfo
,
7910 .pathconf
= nfs4_proc_pathconf
,
7911 .set_capabilities
= nfs4_server_capabilities
,
7912 .decode_dirent
= nfs4_decode_dirent
,
7913 .read_setup
= nfs4_proc_read_setup
,
7914 .read_pageio_init
= pnfs_pageio_init_read
,
7915 .read_rpc_prepare
= nfs4_proc_read_rpc_prepare
,
7916 .read_done
= nfs4_read_done
,
7917 .write_setup
= nfs4_proc_write_setup
,
7918 .write_pageio_init
= pnfs_pageio_init_write
,
7919 .write_rpc_prepare
= nfs4_proc_write_rpc_prepare
,
7920 .write_done
= nfs4_write_done
,
7921 .commit_setup
= nfs4_proc_commit_setup
,
7922 .commit_rpc_prepare
= nfs4_proc_commit_rpc_prepare
,
7923 .commit_done
= nfs4_commit_done
,
7924 .lock
= nfs4_proc_lock
,
7925 .clear_acl_cache
= nfs4_zap_acl_attr
,
7926 .close_context
= nfs4_close_context
,
7927 .open_context
= nfs4_atomic_open
,
7928 .have_delegation
= nfs4_have_delegation
,
7929 .return_delegation
= nfs4_inode_return_delegation
,
7930 .alloc_client
= nfs4_alloc_client
,
7931 .init_client
= nfs4_init_client
,
7932 .free_client
= nfs4_free_client
,
7933 .create_server
= nfs4_create_server
,
7934 .clone_server
= nfs_clone_server
,
7937 static const struct xattr_handler nfs4_xattr_nfs4_acl_handler
= {
7938 .prefix
= XATTR_NAME_NFSV4_ACL
,
7939 .list
= nfs4_xattr_list_nfs4_acl
,
7940 .get
= nfs4_xattr_get_nfs4_acl
,
7941 .set
= nfs4_xattr_set_nfs4_acl
,
7944 const struct xattr_handler
*nfs4_xattr_handlers
[] = {
7945 &nfs4_xattr_nfs4_acl_handler
,
7946 #ifdef CONFIG_NFS_V4_SECURITY_LABEL
7947 &nfs4_xattr_nfs4_label_handler
,