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 #define NFSDBG_FACILITY NFSDBG_PROC
71 #define NFS4_POLL_RETRY_MIN (HZ/10)
72 #define NFS4_POLL_RETRY_MAX (15*HZ)
75 static int _nfs4_proc_open(struct nfs4_opendata
*data
);
76 static int _nfs4_recover_proc_open(struct nfs4_opendata
*data
);
77 static int nfs4_do_fsinfo(struct nfs_server
*, struct nfs_fh
*, struct nfs_fsinfo
*);
78 static int nfs4_async_handle_error(struct rpc_task
*, const struct nfs_server
*, struct nfs4_state
*);
79 static void nfs_fixup_referral_attributes(struct nfs_fattr
*fattr
);
80 static int nfs4_proc_getattr(struct nfs_server
*, struct nfs_fh
*, struct nfs_fattr
*);
81 static int _nfs4_proc_getattr(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fattr
*fattr
);
82 static int nfs4_do_setattr(struct inode
*inode
, struct rpc_cred
*cred
,
83 struct nfs_fattr
*fattr
, struct iattr
*sattr
,
84 struct nfs4_state
*state
);
85 #ifdef CONFIG_NFS_V4_1
86 static int nfs41_test_stateid(struct nfs_server
*, nfs4_stateid
*);
87 static int nfs41_free_stateid(struct nfs_server
*, nfs4_stateid
*);
89 /* Prevent leaks of NFSv4 errors into userland */
90 static int nfs4_map_errors(int err
)
95 case -NFS4ERR_RESOURCE
:
96 case -NFS4ERR_LAYOUTTRYLATER
:
97 case -NFS4ERR_RECALLCONFLICT
:
99 case -NFS4ERR_WRONGSEC
:
101 case -NFS4ERR_BADOWNER
:
102 case -NFS4ERR_BADNAME
:
104 case -NFS4ERR_SHARE_DENIED
:
106 case -NFS4ERR_MINOR_VERS_MISMATCH
:
107 return -EPROTONOSUPPORT
;
108 case -NFS4ERR_ACCESS
:
110 case -NFS4ERR_FILE_OPEN
:
113 dprintk("%s could not handle NFSv4 error %d\n",
121 * This is our standard bitmap for GETATTR requests.
123 const u32 nfs4_fattr_bitmap
[3] = {
125 | FATTR4_WORD0_CHANGE
128 | FATTR4_WORD0_FILEID
,
130 | FATTR4_WORD1_NUMLINKS
132 | FATTR4_WORD1_OWNER_GROUP
133 | FATTR4_WORD1_RAWDEV
134 | FATTR4_WORD1_SPACE_USED
135 | FATTR4_WORD1_TIME_ACCESS
136 | FATTR4_WORD1_TIME_METADATA
137 | FATTR4_WORD1_TIME_MODIFY
140 static const u32 nfs4_pnfs_open_bitmap
[3] = {
142 | FATTR4_WORD0_CHANGE
145 | FATTR4_WORD0_FILEID
,
147 | FATTR4_WORD1_NUMLINKS
149 | FATTR4_WORD1_OWNER_GROUP
150 | FATTR4_WORD1_RAWDEV
151 | FATTR4_WORD1_SPACE_USED
152 | FATTR4_WORD1_TIME_ACCESS
153 | FATTR4_WORD1_TIME_METADATA
154 | FATTR4_WORD1_TIME_MODIFY
,
155 FATTR4_WORD2_MDSTHRESHOLD
158 static const u32 nfs4_open_noattr_bitmap
[3] = {
160 | FATTR4_WORD0_CHANGE
161 | FATTR4_WORD0_FILEID
,
164 const u32 nfs4_statfs_bitmap
[2] = {
165 FATTR4_WORD0_FILES_AVAIL
166 | FATTR4_WORD0_FILES_FREE
167 | FATTR4_WORD0_FILES_TOTAL
,
168 FATTR4_WORD1_SPACE_AVAIL
169 | FATTR4_WORD1_SPACE_FREE
170 | FATTR4_WORD1_SPACE_TOTAL
173 const u32 nfs4_pathconf_bitmap
[2] = {
175 | FATTR4_WORD0_MAXNAME
,
179 const u32 nfs4_fsinfo_bitmap
[3] = { FATTR4_WORD0_MAXFILESIZE
180 | FATTR4_WORD0_MAXREAD
181 | FATTR4_WORD0_MAXWRITE
182 | FATTR4_WORD0_LEASE_TIME
,
183 FATTR4_WORD1_TIME_DELTA
184 | FATTR4_WORD1_FS_LAYOUT_TYPES
,
185 FATTR4_WORD2_LAYOUT_BLKSIZE
188 const u32 nfs4_fs_locations_bitmap
[2] = {
190 | FATTR4_WORD0_CHANGE
193 | FATTR4_WORD0_FILEID
194 | FATTR4_WORD0_FS_LOCATIONS
,
196 | FATTR4_WORD1_NUMLINKS
198 | FATTR4_WORD1_OWNER_GROUP
199 | FATTR4_WORD1_RAWDEV
200 | FATTR4_WORD1_SPACE_USED
201 | FATTR4_WORD1_TIME_ACCESS
202 | FATTR4_WORD1_TIME_METADATA
203 | FATTR4_WORD1_TIME_MODIFY
204 | FATTR4_WORD1_MOUNTED_ON_FILEID
207 static void nfs4_setup_readdir(u64 cookie
, __be32
*verifier
, struct dentry
*dentry
,
208 struct nfs4_readdir_arg
*readdir
)
213 readdir
->cookie
= cookie
;
214 memcpy(&readdir
->verifier
, verifier
, sizeof(readdir
->verifier
));
219 memset(&readdir
->verifier
, 0, sizeof(readdir
->verifier
));
224 * NFSv4 servers do not return entries for '.' and '..'
225 * Therefore, we fake these entries here. We let '.'
226 * have cookie 0 and '..' have cookie 1. Note that
227 * when talking to the server, we always send cookie 0
230 start
= p
= kmap_atomic(*readdir
->pages
);
233 *p
++ = xdr_one
; /* next */
234 *p
++ = xdr_zero
; /* cookie, first word */
235 *p
++ = xdr_one
; /* cookie, second word */
236 *p
++ = xdr_one
; /* entry len */
237 memcpy(p
, ".\0\0\0", 4); /* entry */
239 *p
++ = xdr_one
; /* bitmap length */
240 *p
++ = htonl(FATTR4_WORD0_FILEID
); /* bitmap */
241 *p
++ = htonl(8); /* attribute buffer length */
242 p
= xdr_encode_hyper(p
, NFS_FILEID(dentry
->d_inode
));
245 *p
++ = xdr_one
; /* next */
246 *p
++ = xdr_zero
; /* cookie, first word */
247 *p
++ = xdr_two
; /* cookie, second word */
248 *p
++ = xdr_two
; /* entry len */
249 memcpy(p
, "..\0\0", 4); /* entry */
251 *p
++ = xdr_one
; /* bitmap length */
252 *p
++ = htonl(FATTR4_WORD0_FILEID
); /* bitmap */
253 *p
++ = htonl(8); /* attribute buffer length */
254 p
= xdr_encode_hyper(p
, NFS_FILEID(dentry
->d_parent
->d_inode
));
256 readdir
->pgbase
= (char *)p
- (char *)start
;
257 readdir
->count
-= readdir
->pgbase
;
258 kunmap_atomic(start
);
261 static int nfs4_delay(struct rpc_clnt
*clnt
, long *timeout
)
268 *timeout
= NFS4_POLL_RETRY_MIN
;
269 if (*timeout
> NFS4_POLL_RETRY_MAX
)
270 *timeout
= NFS4_POLL_RETRY_MAX
;
271 freezable_schedule_timeout_killable(*timeout
);
272 if (fatal_signal_pending(current
))
278 /* This is the error handling routine for processes that are allowed
281 static int nfs4_handle_exception(struct nfs_server
*server
, int errorcode
, struct nfs4_exception
*exception
)
283 struct nfs_client
*clp
= server
->nfs_client
;
284 struct nfs4_state
*state
= exception
->state
;
285 struct inode
*inode
= exception
->inode
;
288 exception
->retry
= 0;
292 case -NFS4ERR_OPENMODE
:
293 if (inode
&& nfs4_have_delegation(inode
, FMODE_READ
)) {
294 nfs4_inode_return_delegation(inode
);
295 exception
->retry
= 1;
300 ret
= nfs4_schedule_stateid_recovery(server
, state
);
303 goto wait_on_recovery
;
304 case -NFS4ERR_DELEG_REVOKED
:
305 case -NFS4ERR_ADMIN_REVOKED
:
306 case -NFS4ERR_BAD_STATEID
:
307 if (inode
!= NULL
&& nfs4_have_delegation(inode
, FMODE_READ
)) {
308 nfs_remove_bad_delegation(inode
);
309 exception
->retry
= 1;
314 ret
= nfs4_schedule_stateid_recovery(server
, state
);
317 goto wait_on_recovery
;
318 case -NFS4ERR_EXPIRED
:
320 ret
= nfs4_schedule_stateid_recovery(server
, state
);
324 case -NFS4ERR_STALE_STATEID
:
325 case -NFS4ERR_STALE_CLIENTID
:
326 nfs4_schedule_lease_recovery(clp
);
327 goto wait_on_recovery
;
328 #if defined(CONFIG_NFS_V4_1)
329 case -NFS4ERR_BADSESSION
:
330 case -NFS4ERR_BADSLOT
:
331 case -NFS4ERR_BAD_HIGH_SLOT
:
332 case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION
:
333 case -NFS4ERR_DEADSESSION
:
334 case -NFS4ERR_SEQ_FALSE_RETRY
:
335 case -NFS4ERR_SEQ_MISORDERED
:
336 dprintk("%s ERROR: %d Reset session\n", __func__
,
338 nfs4_schedule_session_recovery(clp
->cl_session
, errorcode
);
339 goto wait_on_recovery
;
340 #endif /* defined(CONFIG_NFS_V4_1) */
341 case -NFS4ERR_FILE_OPEN
:
342 if (exception
->timeout
> HZ
) {
343 /* We have retried a decent amount, time to
351 ret
= nfs4_delay(server
->client
, &exception
->timeout
);
354 case -NFS4ERR_RETRY_UNCACHED_REP
:
355 case -NFS4ERR_OLD_STATEID
:
356 exception
->retry
= 1;
358 case -NFS4ERR_BADOWNER
:
359 /* The following works around a Linux server bug! */
360 case -NFS4ERR_BADNAME
:
361 if (server
->caps
& NFS_CAP_UIDGID_NOMAP
) {
362 server
->caps
&= ~NFS_CAP_UIDGID_NOMAP
;
363 exception
->retry
= 1;
364 printk(KERN_WARNING
"NFS: v4 server %s "
365 "does not accept raw "
367 "Reenabling the idmapper.\n",
368 server
->nfs_client
->cl_hostname
);
371 /* We failed to handle the error */
372 return nfs4_map_errors(ret
);
374 ret
= nfs4_wait_clnt_recover(clp
);
376 exception
->retry
= 1;
381 static void do_renew_lease(struct nfs_client
*clp
, unsigned long timestamp
)
383 spin_lock(&clp
->cl_lock
);
384 if (time_before(clp
->cl_last_renewal
,timestamp
))
385 clp
->cl_last_renewal
= timestamp
;
386 spin_unlock(&clp
->cl_lock
);
389 static void renew_lease(const struct nfs_server
*server
, unsigned long timestamp
)
391 do_renew_lease(server
->nfs_client
, timestamp
);
394 #if defined(CONFIG_NFS_V4_1)
396 static void nfs41_sequence_free_slot(struct nfs4_sequence_res
*res
)
398 struct nfs4_session
*session
;
399 struct nfs4_slot_table
*tbl
;
400 bool send_new_highest_used_slotid
= false;
403 /* just wake up the next guy waiting since
404 * we may have not consumed a slot after all */
405 dprintk("%s: No slot\n", __func__
);
408 tbl
= res
->sr_slot
->table
;
409 session
= tbl
->session
;
411 spin_lock(&tbl
->slot_tbl_lock
);
412 /* Be nice to the server: try to ensure that the last transmitted
413 * value for highest_user_slotid <= target_highest_slotid
415 if (tbl
->highest_used_slotid
> tbl
->target_highest_slotid
)
416 send_new_highest_used_slotid
= true;
418 if (nfs41_wake_and_assign_slot(tbl
, res
->sr_slot
)) {
419 send_new_highest_used_slotid
= false;
422 nfs4_free_slot(tbl
, res
->sr_slot
);
424 if (tbl
->highest_used_slotid
!= NFS4_NO_SLOT
)
425 send_new_highest_used_slotid
= false;
427 spin_unlock(&tbl
->slot_tbl_lock
);
429 if (send_new_highest_used_slotid
)
430 nfs41_server_notify_highest_slotid_update(session
->clp
);
433 static int nfs41_sequence_done(struct rpc_task
*task
, struct nfs4_sequence_res
*res
)
435 struct nfs4_session
*session
;
436 struct nfs4_slot
*slot
;
437 struct nfs_client
*clp
;
438 bool interrupted
= false;
441 /* don't increment the sequence number if the task wasn't sent */
442 if (!RPC_WAS_SENT(task
))
446 session
= slot
->table
->session
;
448 if (slot
->interrupted
) {
449 slot
->interrupted
= 0;
453 /* Check the SEQUENCE operation status */
454 switch (res
->sr_status
) {
456 /* Update the slot's sequence and clientid lease timer */
459 do_renew_lease(clp
, res
->sr_timestamp
);
460 /* Check sequence flags */
461 if (res
->sr_status_flags
!= 0)
462 nfs4_schedule_lease_recovery(clp
);
463 nfs41_update_target_slotid(slot
->table
, slot
, res
);
467 * sr_status remains 1 if an RPC level error occurred.
468 * The server may or may not have processed the sequence
470 * Mark the slot as having hosted an interrupted RPC call.
472 slot
->interrupted
= 1;
475 /* The server detected a resend of the RPC call and
476 * returned NFS4ERR_DELAY as per Section 2.10.6.2
479 dprintk("%s: slot=%u seq=%u: Operation in progress\n",
484 case -NFS4ERR_BADSLOT
:
486 * The slot id we used was probably retired. Try again
487 * using a different slot id.
490 case -NFS4ERR_SEQ_MISORDERED
:
492 * Was the last operation on this sequence interrupted?
493 * If so, retry after bumping the sequence number.
500 * Could this slot have been previously retired?
501 * If so, then the server may be expecting seq_nr = 1!
503 if (slot
->seq_nr
!= 1) {
508 case -NFS4ERR_SEQ_FALSE_RETRY
:
512 /* Just update the slot sequence no. */
516 /* The session may be reset by one of the error handlers. */
517 dprintk("%s: Error %d free the slot \n", __func__
, res
->sr_status
);
518 nfs41_sequence_free_slot(res
);
521 if (rpc_restart_call_prepare(task
)) {
527 if (!rpc_restart_call(task
))
529 rpc_delay(task
, NFS4_POLL_RETRY_MAX
);
533 static int nfs4_sequence_done(struct rpc_task
*task
,
534 struct nfs4_sequence_res
*res
)
536 if (res
->sr_slot
== NULL
)
538 return nfs41_sequence_done(task
, res
);
541 static void nfs41_init_sequence(struct nfs4_sequence_args
*args
,
542 struct nfs4_sequence_res
*res
, int cache_reply
)
544 args
->sa_slot
= NULL
;
545 args
->sa_cache_this
= 0;
546 args
->sa_privileged
= 0;
548 args
->sa_cache_this
= 1;
552 static void nfs4_set_sequence_privileged(struct nfs4_sequence_args
*args
)
554 args
->sa_privileged
= 1;
557 int nfs41_setup_sequence(struct nfs4_session
*session
,
558 struct nfs4_sequence_args
*args
,
559 struct nfs4_sequence_res
*res
,
560 struct rpc_task
*task
)
562 struct nfs4_slot
*slot
;
563 struct nfs4_slot_table
*tbl
;
565 dprintk("--> %s\n", __func__
);
566 /* slot already allocated? */
567 if (res
->sr_slot
!= NULL
)
570 tbl
= &session
->fc_slot_table
;
572 task
->tk_timeout
= 0;
574 spin_lock(&tbl
->slot_tbl_lock
);
575 if (test_bit(NFS4_SLOT_TBL_DRAINING
, &tbl
->slot_tbl_state
) &&
576 !args
->sa_privileged
) {
577 /* The state manager will wait until the slot table is empty */
578 dprintk("%s session is draining\n", __func__
);
582 slot
= nfs4_alloc_slot(tbl
);
584 /* If out of memory, try again in 1/4 second */
585 if (slot
== ERR_PTR(-ENOMEM
))
586 task
->tk_timeout
= HZ
>> 2;
587 dprintk("<-- %s: no free slots\n", __func__
);
590 spin_unlock(&tbl
->slot_tbl_lock
);
592 args
->sa_slot
= slot
;
594 dprintk("<-- %s slotid=%d seqid=%d\n", __func__
,
595 slot
->slot_nr
, slot
->seq_nr
);
598 res
->sr_timestamp
= jiffies
;
599 res
->sr_status_flags
= 0;
601 * sr_status is only set in decode_sequence, and so will remain
602 * set to 1 if an rpc level failure occurs.
606 rpc_call_start(task
);
609 /* Privileged tasks are queued with top priority */
610 if (args
->sa_privileged
)
611 rpc_sleep_on_priority(&tbl
->slot_tbl_waitq
, task
,
612 NULL
, RPC_PRIORITY_PRIVILEGED
);
614 rpc_sleep_on(&tbl
->slot_tbl_waitq
, task
, NULL
);
615 spin_unlock(&tbl
->slot_tbl_lock
);
618 EXPORT_SYMBOL_GPL(nfs41_setup_sequence
);
620 int nfs4_setup_sequence(const struct nfs_server
*server
,
621 struct nfs4_sequence_args
*args
,
622 struct nfs4_sequence_res
*res
,
623 struct rpc_task
*task
)
625 struct nfs4_session
*session
= nfs4_get_session(server
);
628 if (session
== NULL
) {
629 rpc_call_start(task
);
633 dprintk("--> %s clp %p session %p sr_slot %d\n",
634 __func__
, session
->clp
, session
, res
->sr_slot
?
635 res
->sr_slot
->slot_nr
: -1);
637 ret
= nfs41_setup_sequence(session
, args
, res
, task
);
639 dprintk("<-- %s status=%d\n", __func__
, ret
);
643 struct nfs41_call_sync_data
{
644 const struct nfs_server
*seq_server
;
645 struct nfs4_sequence_args
*seq_args
;
646 struct nfs4_sequence_res
*seq_res
;
649 static void nfs41_call_sync_prepare(struct rpc_task
*task
, void *calldata
)
651 struct nfs41_call_sync_data
*data
= calldata
;
652 struct nfs4_session
*session
= nfs4_get_session(data
->seq_server
);
654 dprintk("--> %s data->seq_server %p\n", __func__
, data
->seq_server
);
656 nfs41_setup_sequence(session
, data
->seq_args
, data
->seq_res
, task
);
659 static void nfs41_call_sync_done(struct rpc_task
*task
, void *calldata
)
661 struct nfs41_call_sync_data
*data
= calldata
;
663 nfs41_sequence_done(task
, data
->seq_res
);
666 static const struct rpc_call_ops nfs41_call_sync_ops
= {
667 .rpc_call_prepare
= nfs41_call_sync_prepare
,
668 .rpc_call_done
= nfs41_call_sync_done
,
671 static int nfs4_call_sync_sequence(struct rpc_clnt
*clnt
,
672 struct nfs_server
*server
,
673 struct rpc_message
*msg
,
674 struct nfs4_sequence_args
*args
,
675 struct nfs4_sequence_res
*res
)
678 struct rpc_task
*task
;
679 struct nfs41_call_sync_data data
= {
680 .seq_server
= server
,
684 struct rpc_task_setup task_setup
= {
687 .callback_ops
= &nfs41_call_sync_ops
,
688 .callback_data
= &data
691 task
= rpc_run_task(&task_setup
);
695 ret
= task
->tk_status
;
703 void nfs41_init_sequence(struct nfs4_sequence_args
*args
,
704 struct nfs4_sequence_res
*res
, int cache_reply
)
708 static void nfs4_set_sequence_privileged(struct nfs4_sequence_args
*args
)
713 static int nfs4_sequence_done(struct rpc_task
*task
,
714 struct nfs4_sequence_res
*res
)
718 #endif /* CONFIG_NFS_V4_1 */
721 int _nfs4_call_sync(struct rpc_clnt
*clnt
,
722 struct nfs_server
*server
,
723 struct rpc_message
*msg
,
724 struct nfs4_sequence_args
*args
,
725 struct nfs4_sequence_res
*res
)
727 return rpc_call_sync(clnt
, msg
, 0);
731 int nfs4_call_sync(struct rpc_clnt
*clnt
,
732 struct nfs_server
*server
,
733 struct rpc_message
*msg
,
734 struct nfs4_sequence_args
*args
,
735 struct nfs4_sequence_res
*res
,
738 nfs41_init_sequence(args
, res
, cache_reply
);
739 return server
->nfs_client
->cl_mvops
->call_sync(clnt
, server
, msg
,
743 static void update_changeattr(struct inode
*dir
, struct nfs4_change_info
*cinfo
)
745 struct nfs_inode
*nfsi
= NFS_I(dir
);
747 spin_lock(&dir
->i_lock
);
748 nfsi
->cache_validity
|= NFS_INO_INVALID_ATTR
|NFS_INO_INVALID_DATA
;
749 if (!cinfo
->atomic
|| cinfo
->before
!= dir
->i_version
)
750 nfs_force_lookup_revalidate(dir
);
751 dir
->i_version
= cinfo
->after
;
752 nfs_fscache_invalidate(dir
);
753 spin_unlock(&dir
->i_lock
);
756 struct nfs4_opendata
{
758 struct nfs_openargs o_arg
;
759 struct nfs_openres o_res
;
760 struct nfs_open_confirmargs c_arg
;
761 struct nfs_open_confirmres c_res
;
762 struct nfs4_string owner_name
;
763 struct nfs4_string group_name
;
764 struct nfs_fattr f_attr
;
766 struct dentry
*dentry
;
767 struct nfs4_state_owner
*owner
;
768 struct nfs4_state
*state
;
770 unsigned long timestamp
;
771 unsigned int rpc_done
: 1;
772 unsigned int is_recover
: 1;
777 static bool nfs4_clear_cap_atomic_open_v1(struct nfs_server
*server
,
778 int err
, struct nfs4_exception
*exception
)
782 if (!(server
->caps
& NFS_CAP_ATOMIC_OPEN_V1
))
784 server
->caps
&= ~NFS_CAP_ATOMIC_OPEN_V1
;
785 exception
->retry
= 1;
789 static enum open_claim_type4
790 nfs4_map_atomic_open_claim(struct nfs_server
*server
,
791 enum open_claim_type4 claim
)
793 if (server
->caps
& NFS_CAP_ATOMIC_OPEN_V1
)
798 case NFS4_OPEN_CLAIM_FH
:
799 return NFS4_OPEN_CLAIM_NULL
;
800 case NFS4_OPEN_CLAIM_DELEG_CUR_FH
:
801 return NFS4_OPEN_CLAIM_DELEGATE_CUR
;
802 case NFS4_OPEN_CLAIM_DELEG_PREV_FH
:
803 return NFS4_OPEN_CLAIM_DELEGATE_PREV
;
807 static void nfs4_init_opendata_res(struct nfs4_opendata
*p
)
809 p
->o_res
.f_attr
= &p
->f_attr
;
810 p
->o_res
.seqid
= p
->o_arg
.seqid
;
811 p
->c_res
.seqid
= p
->c_arg
.seqid
;
812 p
->o_res
.server
= p
->o_arg
.server
;
813 p
->o_res
.access_request
= p
->o_arg
.access
;
814 nfs_fattr_init(&p
->f_attr
);
815 nfs_fattr_init_names(&p
->f_attr
, &p
->owner_name
, &p
->group_name
);
818 static struct nfs4_opendata
*nfs4_opendata_alloc(struct dentry
*dentry
,
819 struct nfs4_state_owner
*sp
, fmode_t fmode
, int flags
,
820 const struct iattr
*attrs
,
821 enum open_claim_type4 claim
,
824 struct dentry
*parent
= dget_parent(dentry
);
825 struct inode
*dir
= parent
->d_inode
;
826 struct nfs_server
*server
= NFS_SERVER(dir
);
827 struct nfs4_opendata
*p
;
829 p
= kzalloc(sizeof(*p
), gfp_mask
);
832 p
->o_arg
.seqid
= nfs_alloc_seqid(&sp
->so_seqid
, gfp_mask
);
833 if (p
->o_arg
.seqid
== NULL
)
835 nfs_sb_active(dentry
->d_sb
);
836 p
->dentry
= dget(dentry
);
839 atomic_inc(&sp
->so_count
);
840 p
->o_arg
.open_flags
= flags
;
841 p
->o_arg
.fmode
= fmode
& (FMODE_READ
|FMODE_WRITE
);
842 /* don't put an ACCESS op in OPEN compound if O_EXCL, because ACCESS
843 * will return permission denied for all bits until close */
844 if (!(flags
& O_EXCL
)) {
845 /* ask server to check for all possible rights as results
847 p
->o_arg
.access
= NFS4_ACCESS_READ
| NFS4_ACCESS_MODIFY
|
848 NFS4_ACCESS_EXTEND
| NFS4_ACCESS_EXECUTE
;
850 p
->o_arg
.clientid
= server
->nfs_client
->cl_clientid
;
851 p
->o_arg
.id
.create_time
= ktime_to_ns(sp
->so_seqid
.create_time
);
852 p
->o_arg
.id
.uniquifier
= sp
->so_seqid
.owner_id
;
853 p
->o_arg
.name
= &dentry
->d_name
;
854 p
->o_arg
.server
= server
;
855 p
->o_arg
.bitmask
= server
->attr_bitmask
;
856 p
->o_arg
.open_bitmap
= &nfs4_fattr_bitmap
[0];
857 p
->o_arg
.claim
= nfs4_map_atomic_open_claim(server
, claim
);
858 switch (p
->o_arg
.claim
) {
859 case NFS4_OPEN_CLAIM_NULL
:
860 case NFS4_OPEN_CLAIM_DELEGATE_CUR
:
861 case NFS4_OPEN_CLAIM_DELEGATE_PREV
:
862 p
->o_arg
.fh
= NFS_FH(dir
);
864 case NFS4_OPEN_CLAIM_PREVIOUS
:
865 case NFS4_OPEN_CLAIM_FH
:
866 case NFS4_OPEN_CLAIM_DELEG_CUR_FH
:
867 case NFS4_OPEN_CLAIM_DELEG_PREV_FH
:
868 p
->o_arg
.fh
= NFS_FH(dentry
->d_inode
);
870 if (attrs
!= NULL
&& attrs
->ia_valid
!= 0) {
873 p
->o_arg
.u
.attrs
= &p
->attrs
;
874 memcpy(&p
->attrs
, attrs
, sizeof(p
->attrs
));
877 verf
[1] = current
->pid
;
878 memcpy(p
->o_arg
.u
.verifier
.data
, verf
,
879 sizeof(p
->o_arg
.u
.verifier
.data
));
881 p
->c_arg
.fh
= &p
->o_res
.fh
;
882 p
->c_arg
.stateid
= &p
->o_res
.stateid
;
883 p
->c_arg
.seqid
= p
->o_arg
.seqid
;
884 nfs4_init_opendata_res(p
);
894 static void nfs4_opendata_free(struct kref
*kref
)
896 struct nfs4_opendata
*p
= container_of(kref
,
897 struct nfs4_opendata
, kref
);
898 struct super_block
*sb
= p
->dentry
->d_sb
;
900 nfs_free_seqid(p
->o_arg
.seqid
);
901 if (p
->state
!= NULL
)
902 nfs4_put_open_state(p
->state
);
903 nfs4_put_state_owner(p
->owner
);
907 nfs_fattr_free_names(&p
->f_attr
);
911 static void nfs4_opendata_put(struct nfs4_opendata
*p
)
914 kref_put(&p
->kref
, nfs4_opendata_free
);
917 static int nfs4_wait_for_completion_rpc_task(struct rpc_task
*task
)
921 ret
= rpc_wait_for_completion_task(task
);
925 static int can_open_cached(struct nfs4_state
*state
, fmode_t mode
, int open_mode
)
929 if (open_mode
& (O_EXCL
|O_TRUNC
))
931 switch (mode
& (FMODE_READ
|FMODE_WRITE
)) {
933 ret
|= test_bit(NFS_O_RDONLY_STATE
, &state
->flags
) != 0
934 && state
->n_rdonly
!= 0;
937 ret
|= test_bit(NFS_O_WRONLY_STATE
, &state
->flags
) != 0
938 && state
->n_wronly
!= 0;
940 case FMODE_READ
|FMODE_WRITE
:
941 ret
|= test_bit(NFS_O_RDWR_STATE
, &state
->flags
) != 0
942 && state
->n_rdwr
!= 0;
948 static int can_open_delegated(struct nfs_delegation
*delegation
, fmode_t fmode
)
950 if (delegation
== NULL
)
952 if ((delegation
->type
& fmode
) != fmode
)
954 if (test_bit(NFS_DELEGATION_NEED_RECLAIM
, &delegation
->flags
))
956 if (test_bit(NFS_DELEGATION_RETURNING
, &delegation
->flags
))
958 nfs_mark_delegation_referenced(delegation
);
962 static void update_open_stateflags(struct nfs4_state
*state
, fmode_t fmode
)
971 case FMODE_READ
|FMODE_WRITE
:
974 nfs4_state_set_mode_locked(state
, state
->state
| fmode
);
977 static void nfs_set_open_stateid_locked(struct nfs4_state
*state
, nfs4_stateid
*stateid
, fmode_t fmode
)
979 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) == 0)
980 nfs4_stateid_copy(&state
->stateid
, stateid
);
981 nfs4_stateid_copy(&state
->open_stateid
, stateid
);
982 set_bit(NFS_OPEN_STATE
, &state
->flags
);
985 set_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
988 set_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
990 case FMODE_READ
|FMODE_WRITE
:
991 set_bit(NFS_O_RDWR_STATE
, &state
->flags
);
995 static void nfs_set_open_stateid(struct nfs4_state
*state
, nfs4_stateid
*stateid
, fmode_t fmode
)
997 write_seqlock(&state
->seqlock
);
998 nfs_set_open_stateid_locked(state
, stateid
, fmode
);
999 write_sequnlock(&state
->seqlock
);
1002 static void __update_open_stateid(struct nfs4_state
*state
, nfs4_stateid
*open_stateid
, const nfs4_stateid
*deleg_stateid
, fmode_t fmode
)
1005 * Protect the call to nfs4_state_set_mode_locked and
1006 * serialise the stateid update
1008 write_seqlock(&state
->seqlock
);
1009 if (deleg_stateid
!= NULL
) {
1010 nfs4_stateid_copy(&state
->stateid
, deleg_stateid
);
1011 set_bit(NFS_DELEGATED_STATE
, &state
->flags
);
1013 if (open_stateid
!= NULL
)
1014 nfs_set_open_stateid_locked(state
, open_stateid
, fmode
);
1015 write_sequnlock(&state
->seqlock
);
1016 spin_lock(&state
->owner
->so_lock
);
1017 update_open_stateflags(state
, fmode
);
1018 spin_unlock(&state
->owner
->so_lock
);
1021 static int update_open_stateid(struct nfs4_state
*state
, nfs4_stateid
*open_stateid
, nfs4_stateid
*delegation
, fmode_t fmode
)
1023 struct nfs_inode
*nfsi
= NFS_I(state
->inode
);
1024 struct nfs_delegation
*deleg_cur
;
1027 fmode
&= (FMODE_READ
|FMODE_WRITE
);
1030 deleg_cur
= rcu_dereference(nfsi
->delegation
);
1031 if (deleg_cur
== NULL
)
1034 spin_lock(&deleg_cur
->lock
);
1035 if (nfsi
->delegation
!= deleg_cur
||
1036 test_bit(NFS_DELEGATION_RETURNING
, &deleg_cur
->flags
) ||
1037 (deleg_cur
->type
& fmode
) != fmode
)
1038 goto no_delegation_unlock
;
1040 if (delegation
== NULL
)
1041 delegation
= &deleg_cur
->stateid
;
1042 else if (!nfs4_stateid_match(&deleg_cur
->stateid
, delegation
))
1043 goto no_delegation_unlock
;
1045 nfs_mark_delegation_referenced(deleg_cur
);
1046 __update_open_stateid(state
, open_stateid
, &deleg_cur
->stateid
, fmode
);
1048 no_delegation_unlock
:
1049 spin_unlock(&deleg_cur
->lock
);
1053 if (!ret
&& open_stateid
!= NULL
) {
1054 __update_open_stateid(state
, open_stateid
, NULL
, fmode
);
1062 static void nfs4_return_incompatible_delegation(struct inode
*inode
, fmode_t fmode
)
1064 struct nfs_delegation
*delegation
;
1067 delegation
= rcu_dereference(NFS_I(inode
)->delegation
);
1068 if (delegation
== NULL
|| (delegation
->type
& fmode
) == fmode
) {
1073 nfs4_inode_return_delegation(inode
);
1076 static struct nfs4_state
*nfs4_try_open_cached(struct nfs4_opendata
*opendata
)
1078 struct nfs4_state
*state
= opendata
->state
;
1079 struct nfs_inode
*nfsi
= NFS_I(state
->inode
);
1080 struct nfs_delegation
*delegation
;
1081 int open_mode
= opendata
->o_arg
.open_flags
;
1082 fmode_t fmode
= opendata
->o_arg
.fmode
;
1083 nfs4_stateid stateid
;
1087 if (can_open_cached(state
, fmode
, open_mode
)) {
1088 spin_lock(&state
->owner
->so_lock
);
1089 if (can_open_cached(state
, fmode
, open_mode
)) {
1090 update_open_stateflags(state
, fmode
);
1091 spin_unlock(&state
->owner
->so_lock
);
1092 goto out_return_state
;
1094 spin_unlock(&state
->owner
->so_lock
);
1097 delegation
= rcu_dereference(nfsi
->delegation
);
1098 if (!can_open_delegated(delegation
, fmode
)) {
1102 /* Save the delegation */
1103 nfs4_stateid_copy(&stateid
, &delegation
->stateid
);
1105 nfs_release_seqid(opendata
->o_arg
.seqid
);
1106 if (!opendata
->is_recover
) {
1107 ret
= nfs_may_open(state
->inode
, state
->owner
->so_cred
, open_mode
);
1113 /* Try to update the stateid using the delegation */
1114 if (update_open_stateid(state
, NULL
, &stateid
, fmode
))
1115 goto out_return_state
;
1118 return ERR_PTR(ret
);
1120 atomic_inc(&state
->count
);
1125 nfs4_opendata_check_deleg(struct nfs4_opendata
*data
, struct nfs4_state
*state
)
1127 struct nfs_client
*clp
= NFS_SERVER(state
->inode
)->nfs_client
;
1128 struct nfs_delegation
*delegation
;
1129 int delegation_flags
= 0;
1132 delegation
= rcu_dereference(NFS_I(state
->inode
)->delegation
);
1134 delegation_flags
= delegation
->flags
;
1136 if (data
->o_arg
.claim
== NFS4_OPEN_CLAIM_DELEGATE_CUR
) {
1137 pr_err_ratelimited("NFS: Broken NFSv4 server %s is "
1138 "returning a delegation for "
1139 "OPEN(CLAIM_DELEGATE_CUR)\n",
1141 } else if ((delegation_flags
& 1UL<<NFS_DELEGATION_NEED_RECLAIM
) == 0)
1142 nfs_inode_set_delegation(state
->inode
,
1143 data
->owner
->so_cred
,
1146 nfs_inode_reclaim_delegation(state
->inode
,
1147 data
->owner
->so_cred
,
1152 * Check the inode attributes against the CLAIM_PREVIOUS returned attributes
1153 * and update the nfs4_state.
1155 static struct nfs4_state
*
1156 _nfs4_opendata_reclaim_to_nfs4_state(struct nfs4_opendata
*data
)
1158 struct inode
*inode
= data
->state
->inode
;
1159 struct nfs4_state
*state
= data
->state
;
1162 if (!data
->rpc_done
) {
1163 if (data
->rpc_status
) {
1164 ret
= data
->rpc_status
;
1167 /* cached opens have already been processed */
1172 state
= nfs4_get_open_state(inode
, data
->owner
);
1176 ret
= nfs_refresh_inode(inode
, &data
->f_attr
);
1180 if (data
->o_res
.delegation_type
!= 0)
1181 nfs4_opendata_check_deleg(data
, state
);
1183 update_open_stateid(state
, &data
->o_res
.stateid
, NULL
,
1188 return ERR_PTR(ret
);
1192 static struct nfs4_state
*
1193 _nfs4_opendata_to_nfs4_state(struct nfs4_opendata
*data
)
1195 struct inode
*inode
;
1196 struct nfs4_state
*state
= NULL
;
1199 if (!data
->rpc_done
) {
1200 state
= nfs4_try_open_cached(data
);
1205 if (!(data
->f_attr
.valid
& NFS_ATTR_FATTR
))
1207 inode
= nfs_fhget(data
->dir
->d_sb
, &data
->o_res
.fh
, &data
->f_attr
);
1208 ret
= PTR_ERR(inode
);
1212 state
= nfs4_get_open_state(inode
, data
->owner
);
1215 if (data
->o_res
.delegation_type
!= 0)
1216 nfs4_opendata_check_deleg(data
, state
);
1217 update_open_stateid(state
, &data
->o_res
.stateid
, NULL
,
1221 nfs_release_seqid(data
->o_arg
.seqid
);
1226 return ERR_PTR(ret
);
1229 static struct nfs4_state
*
1230 nfs4_opendata_to_nfs4_state(struct nfs4_opendata
*data
)
1232 if (data
->o_arg
.claim
== NFS4_OPEN_CLAIM_PREVIOUS
)
1233 return _nfs4_opendata_reclaim_to_nfs4_state(data
);
1234 return _nfs4_opendata_to_nfs4_state(data
);
1237 static struct nfs_open_context
*nfs4_state_find_open_context(struct nfs4_state
*state
)
1239 struct nfs_inode
*nfsi
= NFS_I(state
->inode
);
1240 struct nfs_open_context
*ctx
;
1242 spin_lock(&state
->inode
->i_lock
);
1243 list_for_each_entry(ctx
, &nfsi
->open_files
, list
) {
1244 if (ctx
->state
!= state
)
1246 get_nfs_open_context(ctx
);
1247 spin_unlock(&state
->inode
->i_lock
);
1250 spin_unlock(&state
->inode
->i_lock
);
1251 return ERR_PTR(-ENOENT
);
1254 static struct nfs4_opendata
*nfs4_open_recoverdata_alloc(struct nfs_open_context
*ctx
,
1255 struct nfs4_state
*state
, enum open_claim_type4 claim
)
1257 struct nfs4_opendata
*opendata
;
1259 opendata
= nfs4_opendata_alloc(ctx
->dentry
, state
->owner
, 0, 0,
1260 NULL
, claim
, GFP_NOFS
);
1261 if (opendata
== NULL
)
1262 return ERR_PTR(-ENOMEM
);
1263 opendata
->state
= state
;
1264 atomic_inc(&state
->count
);
1268 static int nfs4_open_recover_helper(struct nfs4_opendata
*opendata
, fmode_t fmode
, struct nfs4_state
**res
)
1270 struct nfs4_state
*newstate
;
1273 opendata
->o_arg
.open_flags
= 0;
1274 opendata
->o_arg
.fmode
= fmode
;
1275 memset(&opendata
->o_res
, 0, sizeof(opendata
->o_res
));
1276 memset(&opendata
->c_res
, 0, sizeof(opendata
->c_res
));
1277 nfs4_init_opendata_res(opendata
);
1278 ret
= _nfs4_recover_proc_open(opendata
);
1281 newstate
= nfs4_opendata_to_nfs4_state(opendata
);
1282 if (IS_ERR(newstate
))
1283 return PTR_ERR(newstate
);
1284 nfs4_close_state(newstate
, fmode
);
1289 static int nfs4_open_recover(struct nfs4_opendata
*opendata
, struct nfs4_state
*state
)
1291 struct nfs4_state
*newstate
;
1294 /* memory barrier prior to reading state->n_* */
1295 clear_bit(NFS_DELEGATED_STATE
, &state
->flags
);
1296 clear_bit(NFS_OPEN_STATE
, &state
->flags
);
1298 if (state
->n_rdwr
!= 0) {
1299 clear_bit(NFS_O_RDWR_STATE
, &state
->flags
);
1300 ret
= nfs4_open_recover_helper(opendata
, FMODE_READ
|FMODE_WRITE
, &newstate
);
1303 if (newstate
!= state
)
1306 if (state
->n_wronly
!= 0) {
1307 clear_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
1308 ret
= nfs4_open_recover_helper(opendata
, FMODE_WRITE
, &newstate
);
1311 if (newstate
!= state
)
1314 if (state
->n_rdonly
!= 0) {
1315 clear_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
1316 ret
= nfs4_open_recover_helper(opendata
, FMODE_READ
, &newstate
);
1319 if (newstate
!= state
)
1323 * We may have performed cached opens for all three recoveries.
1324 * Check if we need to update the current stateid.
1326 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) == 0 &&
1327 !nfs4_stateid_match(&state
->stateid
, &state
->open_stateid
)) {
1328 write_seqlock(&state
->seqlock
);
1329 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) == 0)
1330 nfs4_stateid_copy(&state
->stateid
, &state
->open_stateid
);
1331 write_sequnlock(&state
->seqlock
);
1338 * reclaim state on the server after a reboot.
1340 static int _nfs4_do_open_reclaim(struct nfs_open_context
*ctx
, struct nfs4_state
*state
)
1342 struct nfs_delegation
*delegation
;
1343 struct nfs4_opendata
*opendata
;
1344 fmode_t delegation_type
= 0;
1347 opendata
= nfs4_open_recoverdata_alloc(ctx
, state
,
1348 NFS4_OPEN_CLAIM_PREVIOUS
);
1349 if (IS_ERR(opendata
))
1350 return PTR_ERR(opendata
);
1352 delegation
= rcu_dereference(NFS_I(state
->inode
)->delegation
);
1353 if (delegation
!= NULL
&& test_bit(NFS_DELEGATION_NEED_RECLAIM
, &delegation
->flags
) != 0)
1354 delegation_type
= delegation
->type
;
1356 opendata
->o_arg
.u
.delegation_type
= delegation_type
;
1357 status
= nfs4_open_recover(opendata
, state
);
1358 nfs4_opendata_put(opendata
);
1362 static int nfs4_do_open_reclaim(struct nfs_open_context
*ctx
, struct nfs4_state
*state
)
1364 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
1365 struct nfs4_exception exception
= { };
1368 err
= _nfs4_do_open_reclaim(ctx
, state
);
1369 if (nfs4_clear_cap_atomic_open_v1(server
, err
, &exception
))
1371 if (err
!= -NFS4ERR_DELAY
)
1373 nfs4_handle_exception(server
, err
, &exception
);
1374 } while (exception
.retry
);
1378 static int nfs4_open_reclaim(struct nfs4_state_owner
*sp
, struct nfs4_state
*state
)
1380 struct nfs_open_context
*ctx
;
1383 ctx
= nfs4_state_find_open_context(state
);
1386 ret
= nfs4_do_open_reclaim(ctx
, state
);
1387 put_nfs_open_context(ctx
);
1391 static int nfs4_handle_delegation_recall_error(struct nfs_server
*server
, struct nfs4_state
*state
, const nfs4_stateid
*stateid
, int err
)
1395 printk(KERN_ERR
"NFS: %s: unhandled error "
1396 "%d.\n", __func__
, err
);
1401 case -NFS4ERR_BADSESSION
:
1402 case -NFS4ERR_BADSLOT
:
1403 case -NFS4ERR_BAD_HIGH_SLOT
:
1404 case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION
:
1405 case -NFS4ERR_DEADSESSION
:
1406 set_bit(NFS_DELEGATED_STATE
, &state
->flags
);
1407 nfs4_schedule_session_recovery(server
->nfs_client
->cl_session
, err
);
1409 case -NFS4ERR_STALE_CLIENTID
:
1410 case -NFS4ERR_STALE_STATEID
:
1411 set_bit(NFS_DELEGATED_STATE
, &state
->flags
);
1412 case -NFS4ERR_EXPIRED
:
1413 /* Don't recall a delegation if it was lost */
1414 nfs4_schedule_lease_recovery(server
->nfs_client
);
1416 case -NFS4ERR_DELEG_REVOKED
:
1417 case -NFS4ERR_ADMIN_REVOKED
:
1418 case -NFS4ERR_BAD_STATEID
:
1419 case -NFS4ERR_OPENMODE
:
1420 nfs_inode_find_state_and_recover(state
->inode
,
1422 nfs4_schedule_stateid_recovery(server
, state
);
1424 case -NFS4ERR_DELAY
:
1425 case -NFS4ERR_GRACE
:
1426 set_bit(NFS_DELEGATED_STATE
, &state
->flags
);
1430 case -NFS4ERR_DENIED
:
1431 /* kill_proc(fl->fl_pid, SIGLOST, 1); */
1437 int nfs4_open_delegation_recall(struct nfs_open_context
*ctx
, struct nfs4_state
*state
, const nfs4_stateid
*stateid
)
1439 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
1440 struct nfs4_opendata
*opendata
;
1443 opendata
= nfs4_open_recoverdata_alloc(ctx
, state
,
1444 NFS4_OPEN_CLAIM_DELEG_CUR_FH
);
1445 if (IS_ERR(opendata
))
1446 return PTR_ERR(opendata
);
1447 nfs4_stateid_copy(&opendata
->o_arg
.u
.delegation
, stateid
);
1448 err
= nfs4_open_recover(opendata
, state
);
1449 nfs4_opendata_put(opendata
);
1450 return nfs4_handle_delegation_recall_error(server
, state
, stateid
, err
);
1453 static void nfs4_open_confirm_done(struct rpc_task
*task
, void *calldata
)
1455 struct nfs4_opendata
*data
= calldata
;
1457 data
->rpc_status
= task
->tk_status
;
1458 if (data
->rpc_status
== 0) {
1459 nfs4_stateid_copy(&data
->o_res
.stateid
, &data
->c_res
.stateid
);
1460 nfs_confirm_seqid(&data
->owner
->so_seqid
, 0);
1461 renew_lease(data
->o_res
.server
, data
->timestamp
);
1466 static void nfs4_open_confirm_release(void *calldata
)
1468 struct nfs4_opendata
*data
= calldata
;
1469 struct nfs4_state
*state
= NULL
;
1471 /* If this request hasn't been cancelled, do nothing */
1472 if (data
->cancelled
== 0)
1474 /* In case of error, no cleanup! */
1475 if (!data
->rpc_done
)
1477 state
= nfs4_opendata_to_nfs4_state(data
);
1479 nfs4_close_state(state
, data
->o_arg
.fmode
);
1481 nfs4_opendata_put(data
);
1484 static const struct rpc_call_ops nfs4_open_confirm_ops
= {
1485 .rpc_call_done
= nfs4_open_confirm_done
,
1486 .rpc_release
= nfs4_open_confirm_release
,
1490 * Note: On error, nfs4_proc_open_confirm will free the struct nfs4_opendata
1492 static int _nfs4_proc_open_confirm(struct nfs4_opendata
*data
)
1494 struct nfs_server
*server
= NFS_SERVER(data
->dir
->d_inode
);
1495 struct rpc_task
*task
;
1496 struct rpc_message msg
= {
1497 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_OPEN_CONFIRM
],
1498 .rpc_argp
= &data
->c_arg
,
1499 .rpc_resp
= &data
->c_res
,
1500 .rpc_cred
= data
->owner
->so_cred
,
1502 struct rpc_task_setup task_setup_data
= {
1503 .rpc_client
= server
->client
,
1504 .rpc_message
= &msg
,
1505 .callback_ops
= &nfs4_open_confirm_ops
,
1506 .callback_data
= data
,
1507 .workqueue
= nfsiod_workqueue
,
1508 .flags
= RPC_TASK_ASYNC
,
1512 kref_get(&data
->kref
);
1514 data
->rpc_status
= 0;
1515 data
->timestamp
= jiffies
;
1516 task
= rpc_run_task(&task_setup_data
);
1518 return PTR_ERR(task
);
1519 status
= nfs4_wait_for_completion_rpc_task(task
);
1521 data
->cancelled
= 1;
1524 status
= data
->rpc_status
;
1529 static void nfs4_open_prepare(struct rpc_task
*task
, void *calldata
)
1531 struct nfs4_opendata
*data
= calldata
;
1532 struct nfs4_state_owner
*sp
= data
->owner
;
1533 struct nfs_client
*clp
= sp
->so_server
->nfs_client
;
1535 if (nfs_wait_on_sequence(data
->o_arg
.seqid
, task
) != 0)
1538 * Check if we still need to send an OPEN call, or if we can use
1539 * a delegation instead.
1541 if (data
->state
!= NULL
) {
1542 struct nfs_delegation
*delegation
;
1544 if (can_open_cached(data
->state
, data
->o_arg
.fmode
, data
->o_arg
.open_flags
))
1547 delegation
= rcu_dereference(NFS_I(data
->state
->inode
)->delegation
);
1548 if (data
->o_arg
.claim
!= NFS4_OPEN_CLAIM_DELEGATE_CUR
&&
1549 data
->o_arg
.claim
!= NFS4_OPEN_CLAIM_DELEG_CUR_FH
&&
1550 can_open_delegated(delegation
, data
->o_arg
.fmode
))
1551 goto unlock_no_action
;
1554 /* Update client id. */
1555 data
->o_arg
.clientid
= clp
->cl_clientid
;
1556 switch (data
->o_arg
.claim
) {
1557 case NFS4_OPEN_CLAIM_PREVIOUS
:
1558 case NFS4_OPEN_CLAIM_DELEG_CUR_FH
:
1559 case NFS4_OPEN_CLAIM_DELEG_PREV_FH
:
1560 data
->o_arg
.open_bitmap
= &nfs4_open_noattr_bitmap
[0];
1561 case NFS4_OPEN_CLAIM_FH
:
1562 task
->tk_msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_OPEN_NOATTR
];
1563 nfs_copy_fh(&data
->o_res
.fh
, data
->o_arg
.fh
);
1565 data
->timestamp
= jiffies
;
1566 if (nfs4_setup_sequence(data
->o_arg
.server
,
1567 &data
->o_arg
.seq_args
,
1568 &data
->o_res
.seq_res
,
1570 nfs_release_seqid(data
->o_arg
.seqid
);
1572 /* Set the create mode (note dependency on the session type) */
1573 data
->o_arg
.createmode
= NFS4_CREATE_UNCHECKED
;
1574 if (data
->o_arg
.open_flags
& O_EXCL
) {
1575 data
->o_arg
.createmode
= NFS4_CREATE_EXCLUSIVE
;
1576 if (nfs4_has_persistent_session(clp
))
1577 data
->o_arg
.createmode
= NFS4_CREATE_GUARDED
;
1578 else if (clp
->cl_mvops
->minor_version
> 0)
1579 data
->o_arg
.createmode
= NFS4_CREATE_EXCLUSIVE4_1
;
1585 task
->tk_action
= NULL
;
1587 nfs4_sequence_done(task
, &data
->o_res
.seq_res
);
1590 static void nfs4_open_done(struct rpc_task
*task
, void *calldata
)
1592 struct nfs4_opendata
*data
= calldata
;
1594 data
->rpc_status
= task
->tk_status
;
1596 if (!nfs4_sequence_done(task
, &data
->o_res
.seq_res
))
1599 if (task
->tk_status
== 0) {
1600 if (data
->o_res
.f_attr
->valid
& NFS_ATTR_FATTR_TYPE
) {
1601 switch (data
->o_res
.f_attr
->mode
& S_IFMT
) {
1605 data
->rpc_status
= -ELOOP
;
1608 data
->rpc_status
= -EISDIR
;
1611 data
->rpc_status
= -ENOTDIR
;
1614 renew_lease(data
->o_res
.server
, data
->timestamp
);
1615 if (!(data
->o_res
.rflags
& NFS4_OPEN_RESULT_CONFIRM
))
1616 nfs_confirm_seqid(&data
->owner
->so_seqid
, 0);
1621 static void nfs4_open_release(void *calldata
)
1623 struct nfs4_opendata
*data
= calldata
;
1624 struct nfs4_state
*state
= NULL
;
1626 /* If this request hasn't been cancelled, do nothing */
1627 if (data
->cancelled
== 0)
1629 /* In case of error, no cleanup! */
1630 if (data
->rpc_status
!= 0 || !data
->rpc_done
)
1632 /* In case we need an open_confirm, no cleanup! */
1633 if (data
->o_res
.rflags
& NFS4_OPEN_RESULT_CONFIRM
)
1635 state
= nfs4_opendata_to_nfs4_state(data
);
1637 nfs4_close_state(state
, data
->o_arg
.fmode
);
1639 nfs4_opendata_put(data
);
1642 static const struct rpc_call_ops nfs4_open_ops
= {
1643 .rpc_call_prepare
= nfs4_open_prepare
,
1644 .rpc_call_done
= nfs4_open_done
,
1645 .rpc_release
= nfs4_open_release
,
1648 static int nfs4_run_open_task(struct nfs4_opendata
*data
, int isrecover
)
1650 struct inode
*dir
= data
->dir
->d_inode
;
1651 struct nfs_server
*server
= NFS_SERVER(dir
);
1652 struct nfs_openargs
*o_arg
= &data
->o_arg
;
1653 struct nfs_openres
*o_res
= &data
->o_res
;
1654 struct rpc_task
*task
;
1655 struct rpc_message msg
= {
1656 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_OPEN
],
1659 .rpc_cred
= data
->owner
->so_cred
,
1661 struct rpc_task_setup task_setup_data
= {
1662 .rpc_client
= server
->client
,
1663 .rpc_message
= &msg
,
1664 .callback_ops
= &nfs4_open_ops
,
1665 .callback_data
= data
,
1666 .workqueue
= nfsiod_workqueue
,
1667 .flags
= RPC_TASK_ASYNC
,
1671 nfs41_init_sequence(&o_arg
->seq_args
, &o_res
->seq_res
, 1);
1672 kref_get(&data
->kref
);
1674 data
->rpc_status
= 0;
1675 data
->cancelled
= 0;
1676 data
->is_recover
= 0;
1678 nfs4_set_sequence_privileged(&o_arg
->seq_args
);
1679 data
->is_recover
= 1;
1681 task
= rpc_run_task(&task_setup_data
);
1683 return PTR_ERR(task
);
1684 status
= nfs4_wait_for_completion_rpc_task(task
);
1686 data
->cancelled
= 1;
1689 status
= data
->rpc_status
;
1695 static int _nfs4_recover_proc_open(struct nfs4_opendata
*data
)
1697 struct inode
*dir
= data
->dir
->d_inode
;
1698 struct nfs_openres
*o_res
= &data
->o_res
;
1701 status
= nfs4_run_open_task(data
, 1);
1702 if (status
!= 0 || !data
->rpc_done
)
1705 nfs_fattr_map_and_free_names(NFS_SERVER(dir
), &data
->f_attr
);
1707 if (o_res
->rflags
& NFS4_OPEN_RESULT_CONFIRM
) {
1708 status
= _nfs4_proc_open_confirm(data
);
1716 static int nfs4_opendata_access(struct rpc_cred
*cred
,
1717 struct nfs4_opendata
*opendata
,
1718 struct nfs4_state
*state
, fmode_t fmode
,
1721 struct nfs_access_entry cache
;
1724 /* access call failed or for some reason the server doesn't
1725 * support any access modes -- defer access call until later */
1726 if (opendata
->o_res
.access_supported
== 0)
1730 /* don't check MAY_WRITE - a newly created file may not have
1731 * write mode bits, but POSIX allows the creating process to write.
1732 * use openflags to check for exec, because fmode won't
1733 * always have FMODE_EXEC set when file open for exec. */
1734 if (openflags
& __FMODE_EXEC
) {
1735 /* ONLY check for exec rights */
1737 } else if (fmode
& FMODE_READ
)
1741 cache
.jiffies
= jiffies
;
1742 nfs_access_set_mask(&cache
, opendata
->o_res
.access_result
);
1743 nfs_access_add_cache(state
->inode
, &cache
);
1745 if ((mask
& ~cache
.mask
& (MAY_READ
| MAY_EXEC
)) == 0)
1748 /* even though OPEN succeeded, access is denied. Close the file */
1749 nfs4_close_state(state
, fmode
);
1754 * Note: On error, nfs4_proc_open will free the struct nfs4_opendata
1756 static int _nfs4_proc_open(struct nfs4_opendata
*data
)
1758 struct inode
*dir
= data
->dir
->d_inode
;
1759 struct nfs_server
*server
= NFS_SERVER(dir
);
1760 struct nfs_openargs
*o_arg
= &data
->o_arg
;
1761 struct nfs_openres
*o_res
= &data
->o_res
;
1764 status
= nfs4_run_open_task(data
, 0);
1765 if (!data
->rpc_done
)
1768 if (status
== -NFS4ERR_BADNAME
&&
1769 !(o_arg
->open_flags
& O_CREAT
))
1774 nfs_fattr_map_and_free_names(server
, &data
->f_attr
);
1776 if (o_arg
->open_flags
& O_CREAT
)
1777 update_changeattr(dir
, &o_res
->cinfo
);
1778 if ((o_res
->rflags
& NFS4_OPEN_RESULT_LOCKTYPE_POSIX
) == 0)
1779 server
->caps
&= ~NFS_CAP_POSIX_LOCK
;
1780 if(o_res
->rflags
& NFS4_OPEN_RESULT_CONFIRM
) {
1781 status
= _nfs4_proc_open_confirm(data
);
1785 if (!(o_res
->f_attr
->valid
& NFS_ATTR_FATTR
))
1786 _nfs4_proc_getattr(server
, &o_res
->fh
, o_res
->f_attr
);
1790 static int nfs4_recover_expired_lease(struct nfs_server
*server
)
1792 return nfs4_client_recover_expired_lease(server
->nfs_client
);
1797 * reclaim state on the server after a network partition.
1798 * Assumes caller holds the appropriate lock
1800 static int _nfs4_open_expired(struct nfs_open_context
*ctx
, struct nfs4_state
*state
)
1802 struct nfs4_opendata
*opendata
;
1805 opendata
= nfs4_open_recoverdata_alloc(ctx
, state
,
1806 NFS4_OPEN_CLAIM_FH
);
1807 if (IS_ERR(opendata
))
1808 return PTR_ERR(opendata
);
1809 ret
= nfs4_open_recover(opendata
, state
);
1811 d_drop(ctx
->dentry
);
1812 nfs4_opendata_put(opendata
);
1816 static int nfs4_do_open_expired(struct nfs_open_context
*ctx
, struct nfs4_state
*state
)
1818 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
1819 struct nfs4_exception exception
= { };
1823 err
= _nfs4_open_expired(ctx
, state
);
1824 if (nfs4_clear_cap_atomic_open_v1(server
, err
, &exception
))
1829 case -NFS4ERR_GRACE
:
1830 case -NFS4ERR_DELAY
:
1831 nfs4_handle_exception(server
, err
, &exception
);
1834 } while (exception
.retry
);
1839 static int nfs4_open_expired(struct nfs4_state_owner
*sp
, struct nfs4_state
*state
)
1841 struct nfs_open_context
*ctx
;
1844 ctx
= nfs4_state_find_open_context(state
);
1847 ret
= nfs4_do_open_expired(ctx
, state
);
1848 put_nfs_open_context(ctx
);
1852 #if defined(CONFIG_NFS_V4_1)
1853 static void nfs41_clear_delegation_stateid(struct nfs4_state
*state
)
1855 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
1856 nfs4_stateid
*stateid
= &state
->stateid
;
1859 /* If a state reset has been done, test_stateid is unneeded */
1860 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) == 0)
1863 status
= nfs41_test_stateid(server
, stateid
);
1864 if (status
!= NFS_OK
) {
1865 /* Free the stateid unless the server explicitly
1866 * informs us the stateid is unrecognized. */
1867 if (status
!= -NFS4ERR_BAD_STATEID
)
1868 nfs41_free_stateid(server
, stateid
);
1869 nfs_remove_bad_delegation(state
->inode
);
1871 write_seqlock(&state
->seqlock
);
1872 nfs4_stateid_copy(&state
->stateid
, &state
->open_stateid
);
1873 write_sequnlock(&state
->seqlock
);
1874 clear_bit(NFS_DELEGATED_STATE
, &state
->flags
);
1879 * nfs41_check_open_stateid - possibly free an open stateid
1881 * @state: NFSv4 state for an inode
1883 * Returns NFS_OK if recovery for this stateid is now finished.
1884 * Otherwise a negative NFS4ERR value is returned.
1886 static int nfs41_check_open_stateid(struct nfs4_state
*state
)
1888 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
1889 nfs4_stateid
*stateid
= &state
->open_stateid
;
1892 /* If a state reset has been done, test_stateid is unneeded */
1893 if ((test_bit(NFS_O_RDONLY_STATE
, &state
->flags
) == 0) &&
1894 (test_bit(NFS_O_WRONLY_STATE
, &state
->flags
) == 0) &&
1895 (test_bit(NFS_O_RDWR_STATE
, &state
->flags
) == 0))
1896 return -NFS4ERR_BAD_STATEID
;
1898 status
= nfs41_test_stateid(server
, stateid
);
1899 if (status
!= NFS_OK
) {
1900 /* Free the stateid unless the server explicitly
1901 * informs us the stateid is unrecognized. */
1902 if (status
!= -NFS4ERR_BAD_STATEID
)
1903 nfs41_free_stateid(server
, stateid
);
1905 clear_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
1906 clear_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
1907 clear_bit(NFS_O_RDWR_STATE
, &state
->flags
);
1908 clear_bit(NFS_OPEN_STATE
, &state
->flags
);
1913 static int nfs41_open_expired(struct nfs4_state_owner
*sp
, struct nfs4_state
*state
)
1917 nfs41_clear_delegation_stateid(state
);
1918 status
= nfs41_check_open_stateid(state
);
1919 if (status
!= NFS_OK
)
1920 status
= nfs4_open_expired(sp
, state
);
1926 * on an EXCLUSIVE create, the server should send back a bitmask with FATTR4-*
1927 * fields corresponding to attributes that were used to store the verifier.
1928 * Make sure we clobber those fields in the later setattr call
1930 static inline void nfs4_exclusive_attrset(struct nfs4_opendata
*opendata
, struct iattr
*sattr
)
1932 if ((opendata
->o_res
.attrset
[1] & FATTR4_WORD1_TIME_ACCESS
) &&
1933 !(sattr
->ia_valid
& ATTR_ATIME_SET
))
1934 sattr
->ia_valid
|= ATTR_ATIME
;
1936 if ((opendata
->o_res
.attrset
[1] & FATTR4_WORD1_TIME_MODIFY
) &&
1937 !(sattr
->ia_valid
& ATTR_MTIME_SET
))
1938 sattr
->ia_valid
|= ATTR_MTIME
;
1941 static int _nfs4_open_and_get_state(struct nfs4_opendata
*opendata
,
1944 struct nfs4_state
**res
)
1946 struct nfs4_state_owner
*sp
= opendata
->owner
;
1947 struct nfs_server
*server
= sp
->so_server
;
1948 struct nfs4_state
*state
;
1952 seq
= raw_seqcount_begin(&sp
->so_reclaim_seqcount
);
1954 ret
= _nfs4_proc_open(opendata
);
1958 state
= nfs4_opendata_to_nfs4_state(opendata
);
1959 ret
= PTR_ERR(state
);
1962 if (server
->caps
& NFS_CAP_POSIX_LOCK
)
1963 set_bit(NFS_STATE_POSIX_LOCKS
, &state
->flags
);
1965 ret
= nfs4_opendata_access(sp
->so_cred
, opendata
, state
, fmode
, flags
);
1969 if (read_seqcount_retry(&sp
->so_reclaim_seqcount
, seq
))
1970 nfs4_schedule_stateid_recovery(server
, state
);
1977 * Returns a referenced nfs4_state
1979 static int _nfs4_do_open(struct inode
*dir
,
1980 struct dentry
*dentry
,
1983 struct iattr
*sattr
,
1984 struct rpc_cred
*cred
,
1985 struct nfs4_state
**res
,
1986 struct nfs4_threshold
**ctx_th
)
1988 struct nfs4_state_owner
*sp
;
1989 struct nfs4_state
*state
= NULL
;
1990 struct nfs_server
*server
= NFS_SERVER(dir
);
1991 struct nfs4_opendata
*opendata
;
1992 enum open_claim_type4 claim
= NFS4_OPEN_CLAIM_NULL
;
1995 /* Protect against reboot recovery conflicts */
1997 sp
= nfs4_get_state_owner(server
, cred
, GFP_KERNEL
);
1999 dprintk("nfs4_do_open: nfs4_get_state_owner failed!\n");
2002 status
= nfs4_recover_expired_lease(server
);
2004 goto err_put_state_owner
;
2005 if (dentry
->d_inode
!= NULL
)
2006 nfs4_return_incompatible_delegation(dentry
->d_inode
, fmode
);
2008 if (dentry
->d_inode
)
2009 claim
= NFS4_OPEN_CLAIM_FH
;
2010 opendata
= nfs4_opendata_alloc(dentry
, sp
, fmode
, flags
, sattr
,
2012 if (opendata
== NULL
)
2013 goto err_put_state_owner
;
2015 if (ctx_th
&& server
->attr_bitmask
[2] & FATTR4_WORD2_MDSTHRESHOLD
) {
2016 opendata
->f_attr
.mdsthreshold
= pnfs_mdsthreshold_alloc();
2017 if (!opendata
->f_attr
.mdsthreshold
)
2018 goto err_opendata_put
;
2019 opendata
->o_arg
.open_bitmap
= &nfs4_pnfs_open_bitmap
[0];
2021 if (dentry
->d_inode
!= NULL
)
2022 opendata
->state
= nfs4_get_open_state(dentry
->d_inode
, sp
);
2024 status
= _nfs4_open_and_get_state(opendata
, fmode
, flags
, &state
);
2026 goto err_opendata_put
;
2028 if ((opendata
->o_arg
.open_flags
& O_EXCL
) &&
2029 (opendata
->o_arg
.createmode
!= NFS4_CREATE_GUARDED
)) {
2030 nfs4_exclusive_attrset(opendata
, sattr
);
2032 nfs_fattr_init(opendata
->o_res
.f_attr
);
2033 status
= nfs4_do_setattr(state
->inode
, cred
,
2034 opendata
->o_res
.f_attr
, sattr
,
2037 nfs_setattr_update_inode(state
->inode
, sattr
);
2038 nfs_post_op_update_inode(state
->inode
, opendata
->o_res
.f_attr
);
2041 if (pnfs_use_threshold(ctx_th
, opendata
->f_attr
.mdsthreshold
, server
))
2042 *ctx_th
= opendata
->f_attr
.mdsthreshold
;
2044 kfree(opendata
->f_attr
.mdsthreshold
);
2045 opendata
->f_attr
.mdsthreshold
= NULL
;
2047 nfs4_opendata_put(opendata
);
2048 nfs4_put_state_owner(sp
);
2052 kfree(opendata
->f_attr
.mdsthreshold
);
2053 nfs4_opendata_put(opendata
);
2054 err_put_state_owner
:
2055 nfs4_put_state_owner(sp
);
2062 static struct nfs4_state
*nfs4_do_open(struct inode
*dir
,
2063 struct dentry
*dentry
,
2066 struct iattr
*sattr
,
2067 struct rpc_cred
*cred
,
2068 struct nfs4_threshold
**ctx_th
)
2070 struct nfs_server
*server
= NFS_SERVER(dir
);
2071 struct nfs4_exception exception
= { };
2072 struct nfs4_state
*res
;
2075 fmode
&= FMODE_READ
|FMODE_WRITE
|FMODE_EXEC
;
2077 status
= _nfs4_do_open(dir
, dentry
, fmode
, flags
, sattr
, cred
,
2081 /* NOTE: BAD_SEQID means the server and client disagree about the
2082 * book-keeping w.r.t. state-changing operations
2083 * (OPEN/CLOSE/LOCK/LOCKU...)
2084 * It is actually a sign of a bug on the client or on the server.
2086 * If we receive a BAD_SEQID error in the particular case of
2087 * doing an OPEN, we assume that nfs_increment_open_seqid() will
2088 * have unhashed the old state_owner for us, and that we can
2089 * therefore safely retry using a new one. We should still warn
2090 * the user though...
2092 if (status
== -NFS4ERR_BAD_SEQID
) {
2093 pr_warn_ratelimited("NFS: v4 server %s "
2094 " returned a bad sequence-id error!\n",
2095 NFS_SERVER(dir
)->nfs_client
->cl_hostname
);
2096 exception
.retry
= 1;
2100 * BAD_STATEID on OPEN means that the server cancelled our
2101 * state before it received the OPEN_CONFIRM.
2102 * Recover by retrying the request as per the discussion
2103 * on Page 181 of RFC3530.
2105 if (status
== -NFS4ERR_BAD_STATEID
) {
2106 exception
.retry
= 1;
2109 if (status
== -EAGAIN
) {
2110 /* We must have found a delegation */
2111 exception
.retry
= 1;
2114 if (nfs4_clear_cap_atomic_open_v1(server
, status
, &exception
))
2116 res
= ERR_PTR(nfs4_handle_exception(server
,
2117 status
, &exception
));
2118 } while (exception
.retry
);
2122 static int _nfs4_do_setattr(struct inode
*inode
, struct rpc_cred
*cred
,
2123 struct nfs_fattr
*fattr
, struct iattr
*sattr
,
2124 struct nfs4_state
*state
)
2126 struct nfs_server
*server
= NFS_SERVER(inode
);
2127 struct nfs_setattrargs arg
= {
2128 .fh
= NFS_FH(inode
),
2131 .bitmask
= server
->attr_bitmask
,
2133 struct nfs_setattrres res
= {
2137 struct rpc_message msg
= {
2138 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETATTR
],
2143 unsigned long timestamp
= jiffies
;
2148 nfs_fattr_init(fattr
);
2150 /* Servers should only apply open mode checks for file size changes */
2151 truncate
= (sattr
->ia_valid
& ATTR_SIZE
) ? true : false;
2152 fmode
= truncate
? FMODE_WRITE
: FMODE_READ
;
2154 if (nfs4_copy_delegation_stateid(&arg
.stateid
, inode
, fmode
)) {
2155 /* Use that stateid */
2156 } else if (truncate
&& state
!= NULL
&& nfs4_valid_open_stateid(state
)) {
2157 struct nfs_lockowner lockowner
= {
2158 .l_owner
= current
->files
,
2159 .l_pid
= current
->tgid
,
2161 nfs4_select_rw_stateid(&arg
.stateid
, state
, FMODE_WRITE
,
2164 nfs4_stateid_copy(&arg
.stateid
, &zero_stateid
);
2166 status
= nfs4_call_sync(server
->client
, server
, &msg
, &arg
.seq_args
, &res
.seq_res
, 1);
2167 if (status
== 0 && state
!= NULL
)
2168 renew_lease(server
, timestamp
);
2172 static int nfs4_do_setattr(struct inode
*inode
, struct rpc_cred
*cred
,
2173 struct nfs_fattr
*fattr
, struct iattr
*sattr
,
2174 struct nfs4_state
*state
)
2176 struct nfs_server
*server
= NFS_SERVER(inode
);
2177 struct nfs4_exception exception
= {
2183 err
= _nfs4_do_setattr(inode
, cred
, fattr
, sattr
, state
);
2185 case -NFS4ERR_OPENMODE
:
2186 if (!(sattr
->ia_valid
& ATTR_SIZE
)) {
2187 pr_warn_once("NFSv4: server %s is incorrectly "
2188 "applying open mode checks to "
2189 "a SETATTR that is not "
2190 "changing file size.\n",
2191 server
->nfs_client
->cl_hostname
);
2193 if (state
&& !(state
->state
& FMODE_WRITE
)) {
2195 if (sattr
->ia_valid
& ATTR_OPEN
)
2200 err
= nfs4_handle_exception(server
, err
, &exception
);
2201 } while (exception
.retry
);
2206 struct nfs4_closedata
{
2207 struct inode
*inode
;
2208 struct nfs4_state
*state
;
2209 struct nfs_closeargs arg
;
2210 struct nfs_closeres res
;
2211 struct nfs_fattr fattr
;
2212 unsigned long timestamp
;
2217 static void nfs4_free_closedata(void *data
)
2219 struct nfs4_closedata
*calldata
= data
;
2220 struct nfs4_state_owner
*sp
= calldata
->state
->owner
;
2221 struct super_block
*sb
= calldata
->state
->inode
->i_sb
;
2224 pnfs_roc_release(calldata
->state
->inode
);
2225 nfs4_put_open_state(calldata
->state
);
2226 nfs_free_seqid(calldata
->arg
.seqid
);
2227 nfs4_put_state_owner(sp
);
2228 nfs_sb_deactive(sb
);
2232 static void nfs4_close_clear_stateid_flags(struct nfs4_state
*state
,
2235 spin_lock(&state
->owner
->so_lock
);
2236 clear_bit(NFS_O_RDWR_STATE
, &state
->flags
);
2237 switch (fmode
& (FMODE_READ
|FMODE_WRITE
)) {
2239 clear_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
2242 clear_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
2245 clear_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
2246 clear_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
2247 clear_bit(NFS_OPEN_STATE
, &state
->flags
);
2249 spin_unlock(&state
->owner
->so_lock
);
2252 static void nfs4_close_done(struct rpc_task
*task
, void *data
)
2254 struct nfs4_closedata
*calldata
= data
;
2255 struct nfs4_state
*state
= calldata
->state
;
2256 struct nfs_server
*server
= NFS_SERVER(calldata
->inode
);
2258 dprintk("%s: begin!\n", __func__
);
2259 if (!nfs4_sequence_done(task
, &calldata
->res
.seq_res
))
2261 /* hmm. we are done with the inode, and in the process of freeing
2262 * the state_owner. we keep this around to process errors
2264 switch (task
->tk_status
) {
2267 pnfs_roc_set_barrier(state
->inode
,
2268 calldata
->roc_barrier
);
2269 nfs_set_open_stateid(state
, &calldata
->res
.stateid
, 0);
2270 renew_lease(server
, calldata
->timestamp
);
2271 nfs4_close_clear_stateid_flags(state
,
2272 calldata
->arg
.fmode
);
2274 case -NFS4ERR_STALE_STATEID
:
2275 case -NFS4ERR_OLD_STATEID
:
2276 case -NFS4ERR_BAD_STATEID
:
2277 case -NFS4ERR_EXPIRED
:
2278 if (calldata
->arg
.fmode
== 0)
2281 if (nfs4_async_handle_error(task
, server
, state
) == -EAGAIN
)
2282 rpc_restart_call_prepare(task
);
2284 nfs_release_seqid(calldata
->arg
.seqid
);
2285 nfs_refresh_inode(calldata
->inode
, calldata
->res
.fattr
);
2286 dprintk("%s: done, ret = %d!\n", __func__
, task
->tk_status
);
2289 static void nfs4_close_prepare(struct rpc_task
*task
, void *data
)
2291 struct nfs4_closedata
*calldata
= data
;
2292 struct nfs4_state
*state
= calldata
->state
;
2293 struct inode
*inode
= calldata
->inode
;
2296 dprintk("%s: begin!\n", __func__
);
2297 if (nfs_wait_on_sequence(calldata
->arg
.seqid
, task
) != 0)
2300 task
->tk_msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_OPEN_DOWNGRADE
];
2301 calldata
->arg
.fmode
= FMODE_READ
|FMODE_WRITE
;
2302 spin_lock(&state
->owner
->so_lock
);
2303 /* Calculate the change in open mode */
2304 if (state
->n_rdwr
== 0) {
2305 if (state
->n_rdonly
== 0) {
2306 call_close
|= test_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
2307 call_close
|= test_bit(NFS_O_RDWR_STATE
, &state
->flags
);
2308 calldata
->arg
.fmode
&= ~FMODE_READ
;
2310 if (state
->n_wronly
== 0) {
2311 call_close
|= test_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
2312 call_close
|= test_bit(NFS_O_RDWR_STATE
, &state
->flags
);
2313 calldata
->arg
.fmode
&= ~FMODE_WRITE
;
2316 if (!nfs4_valid_open_stateid(state
))
2318 spin_unlock(&state
->owner
->so_lock
);
2321 /* Note: exit _without_ calling nfs4_close_done */
2325 if (calldata
->arg
.fmode
== 0) {
2326 task
->tk_msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_CLOSE
];
2327 if (calldata
->roc
&&
2328 pnfs_roc_drain(inode
, &calldata
->roc_barrier
, task
)) {
2329 nfs_release_seqid(calldata
->arg
.seqid
);
2334 nfs_fattr_init(calldata
->res
.fattr
);
2335 calldata
->timestamp
= jiffies
;
2336 if (nfs4_setup_sequence(NFS_SERVER(inode
),
2337 &calldata
->arg
.seq_args
,
2338 &calldata
->res
.seq_res
,
2340 nfs_release_seqid(calldata
->arg
.seqid
);
2341 dprintk("%s: done!\n", __func__
);
2344 task
->tk_action
= NULL
;
2346 nfs4_sequence_done(task
, &calldata
->res
.seq_res
);
2349 static const struct rpc_call_ops nfs4_close_ops
= {
2350 .rpc_call_prepare
= nfs4_close_prepare
,
2351 .rpc_call_done
= nfs4_close_done
,
2352 .rpc_release
= nfs4_free_closedata
,
2356 * It is possible for data to be read/written from a mem-mapped file
2357 * after the sys_close call (which hits the vfs layer as a flush).
2358 * This means that we can't safely call nfsv4 close on a file until
2359 * the inode is cleared. This in turn means that we are not good
2360 * NFSv4 citizens - we do not indicate to the server to update the file's
2361 * share state even when we are done with one of the three share
2362 * stateid's in the inode.
2364 * NOTE: Caller must be holding the sp->so_owner semaphore!
2366 int nfs4_do_close(struct nfs4_state
*state
, gfp_t gfp_mask
, int wait
)
2368 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
2369 struct nfs4_closedata
*calldata
;
2370 struct nfs4_state_owner
*sp
= state
->owner
;
2371 struct rpc_task
*task
;
2372 struct rpc_message msg
= {
2373 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_CLOSE
],
2374 .rpc_cred
= state
->owner
->so_cred
,
2376 struct rpc_task_setup task_setup_data
= {
2377 .rpc_client
= server
->client
,
2378 .rpc_message
= &msg
,
2379 .callback_ops
= &nfs4_close_ops
,
2380 .workqueue
= nfsiod_workqueue
,
2381 .flags
= RPC_TASK_ASYNC
,
2383 int status
= -ENOMEM
;
2385 calldata
= kzalloc(sizeof(*calldata
), gfp_mask
);
2386 if (calldata
== NULL
)
2388 nfs41_init_sequence(&calldata
->arg
.seq_args
, &calldata
->res
.seq_res
, 1);
2389 calldata
->inode
= state
->inode
;
2390 calldata
->state
= state
;
2391 calldata
->arg
.fh
= NFS_FH(state
->inode
);
2392 calldata
->arg
.stateid
= &state
->open_stateid
;
2393 /* Serialization for the sequence id */
2394 calldata
->arg
.seqid
= nfs_alloc_seqid(&state
->owner
->so_seqid
, gfp_mask
);
2395 if (calldata
->arg
.seqid
== NULL
)
2396 goto out_free_calldata
;
2397 calldata
->arg
.fmode
= 0;
2398 calldata
->arg
.bitmask
= server
->cache_consistency_bitmask
;
2399 calldata
->res
.fattr
= &calldata
->fattr
;
2400 calldata
->res
.seqid
= calldata
->arg
.seqid
;
2401 calldata
->res
.server
= server
;
2402 calldata
->roc
= pnfs_roc(state
->inode
);
2403 nfs_sb_active(calldata
->inode
->i_sb
);
2405 msg
.rpc_argp
= &calldata
->arg
;
2406 msg
.rpc_resp
= &calldata
->res
;
2407 task_setup_data
.callback_data
= calldata
;
2408 task
= rpc_run_task(&task_setup_data
);
2410 return PTR_ERR(task
);
2413 status
= rpc_wait_for_completion_task(task
);
2419 nfs4_put_open_state(state
);
2420 nfs4_put_state_owner(sp
);
2424 static struct inode
*
2425 nfs4_atomic_open(struct inode
*dir
, struct nfs_open_context
*ctx
, int open_flags
, struct iattr
*attr
)
2427 struct nfs4_state
*state
;
2429 /* Protect against concurrent sillydeletes */
2430 state
= nfs4_do_open(dir
, ctx
->dentry
, ctx
->mode
, open_flags
, attr
,
2431 ctx
->cred
, &ctx
->mdsthreshold
);
2433 return ERR_CAST(state
);
2435 return igrab(state
->inode
);
2438 static void nfs4_close_context(struct nfs_open_context
*ctx
, int is_sync
)
2440 if (ctx
->state
== NULL
)
2443 nfs4_close_sync(ctx
->state
, ctx
->mode
);
2445 nfs4_close_state(ctx
->state
, ctx
->mode
);
2448 static int _nfs4_server_capabilities(struct nfs_server
*server
, struct nfs_fh
*fhandle
)
2450 struct nfs4_server_caps_arg args
= {
2453 struct nfs4_server_caps_res res
= {};
2454 struct rpc_message msg
= {
2455 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SERVER_CAPS
],
2461 status
= nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
2463 memcpy(server
->attr_bitmask
, res
.attr_bitmask
, sizeof(server
->attr_bitmask
));
2464 server
->caps
&= ~(NFS_CAP_ACLS
|NFS_CAP_HARDLINKS
|
2465 NFS_CAP_SYMLINKS
|NFS_CAP_FILEID
|
2466 NFS_CAP_MODE
|NFS_CAP_NLINK
|NFS_CAP_OWNER
|
2467 NFS_CAP_OWNER_GROUP
|NFS_CAP_ATIME
|
2468 NFS_CAP_CTIME
|NFS_CAP_MTIME
);
2469 if (res
.attr_bitmask
[0] & FATTR4_WORD0_ACL
)
2470 server
->caps
|= NFS_CAP_ACLS
;
2471 if (res
.has_links
!= 0)
2472 server
->caps
|= NFS_CAP_HARDLINKS
;
2473 if (res
.has_symlinks
!= 0)
2474 server
->caps
|= NFS_CAP_SYMLINKS
;
2475 if (res
.attr_bitmask
[0] & FATTR4_WORD0_FILEID
)
2476 server
->caps
|= NFS_CAP_FILEID
;
2477 if (res
.attr_bitmask
[1] & FATTR4_WORD1_MODE
)
2478 server
->caps
|= NFS_CAP_MODE
;
2479 if (res
.attr_bitmask
[1] & FATTR4_WORD1_NUMLINKS
)
2480 server
->caps
|= NFS_CAP_NLINK
;
2481 if (res
.attr_bitmask
[1] & FATTR4_WORD1_OWNER
)
2482 server
->caps
|= NFS_CAP_OWNER
;
2483 if (res
.attr_bitmask
[1] & FATTR4_WORD1_OWNER_GROUP
)
2484 server
->caps
|= NFS_CAP_OWNER_GROUP
;
2485 if (res
.attr_bitmask
[1] & FATTR4_WORD1_TIME_ACCESS
)
2486 server
->caps
|= NFS_CAP_ATIME
;
2487 if (res
.attr_bitmask
[1] & FATTR4_WORD1_TIME_METADATA
)
2488 server
->caps
|= NFS_CAP_CTIME
;
2489 if (res
.attr_bitmask
[1] & FATTR4_WORD1_TIME_MODIFY
)
2490 server
->caps
|= NFS_CAP_MTIME
;
2492 memcpy(server
->cache_consistency_bitmask
, res
.attr_bitmask
, sizeof(server
->cache_consistency_bitmask
));
2493 server
->cache_consistency_bitmask
[0] &= FATTR4_WORD0_CHANGE
|FATTR4_WORD0_SIZE
;
2494 server
->cache_consistency_bitmask
[1] &= FATTR4_WORD1_TIME_METADATA
|FATTR4_WORD1_TIME_MODIFY
;
2495 server
->acl_bitmask
= res
.acl_bitmask
;
2496 server
->fh_expire_type
= res
.fh_expire_type
;
2502 int nfs4_server_capabilities(struct nfs_server
*server
, struct nfs_fh
*fhandle
)
2504 struct nfs4_exception exception
= { };
2507 err
= nfs4_handle_exception(server
,
2508 _nfs4_server_capabilities(server
, fhandle
),
2510 } while (exception
.retry
);
2514 static int _nfs4_lookup_root(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
2515 struct nfs_fsinfo
*info
)
2517 struct nfs4_lookup_root_arg args
= {
2518 .bitmask
= nfs4_fattr_bitmap
,
2520 struct nfs4_lookup_res res
= {
2522 .fattr
= info
->fattr
,
2525 struct rpc_message msg
= {
2526 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOOKUP_ROOT
],
2531 nfs_fattr_init(info
->fattr
);
2532 return nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
2535 static int nfs4_lookup_root(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
2536 struct nfs_fsinfo
*info
)
2538 struct nfs4_exception exception
= { };
2541 err
= _nfs4_lookup_root(server
, fhandle
, info
);
2544 case -NFS4ERR_WRONGSEC
:
2547 err
= nfs4_handle_exception(server
, err
, &exception
);
2549 } while (exception
.retry
);
2554 static int nfs4_lookup_root_sec(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
2555 struct nfs_fsinfo
*info
, rpc_authflavor_t flavor
)
2557 struct rpc_auth
*auth
;
2560 auth
= rpcauth_create(flavor
, server
->client
);
2565 ret
= nfs4_lookup_root(server
, fhandle
, info
);
2571 * Retry pseudoroot lookup with various security flavors. We do this when:
2573 * NFSv4.0: the PUTROOTFH operation returns NFS4ERR_WRONGSEC
2574 * NFSv4.1: the server does not support the SECINFO_NO_NAME operation
2576 * Returns zero on success, or a negative NFS4ERR value, or a
2577 * negative errno value.
2579 static int nfs4_find_root_sec(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
2580 struct nfs_fsinfo
*info
)
2582 /* Per 3530bis 15.33.5 */
2583 static const rpc_authflavor_t flav_array
[] = {
2587 RPC_AUTH_UNIX
, /* courtesy */
2590 int status
= -EPERM
;
2593 for (i
= 0; i
< ARRAY_SIZE(flav_array
); i
++) {
2594 status
= nfs4_lookup_root_sec(server
, fhandle
, info
, flav_array
[i
]);
2595 if (status
== -NFS4ERR_WRONGSEC
|| status
== -EACCES
)
2601 * -EACCESS could mean that the user doesn't have correct permissions
2602 * to access the mount. It could also mean that we tried to mount
2603 * with a gss auth flavor, but rpc.gssd isn't running. Either way,
2604 * existing mount programs don't handle -EACCES very well so it should
2605 * be mapped to -EPERM instead.
2607 if (status
== -EACCES
)
2612 static int nfs4_do_find_root_sec(struct nfs_server
*server
,
2613 struct nfs_fh
*fhandle
, struct nfs_fsinfo
*info
)
2615 int mv
= server
->nfs_client
->cl_minorversion
;
2616 return nfs_v4_minor_ops
[mv
]->find_root_sec(server
, fhandle
, info
);
2620 * nfs4_proc_get_rootfh - get file handle for server's pseudoroot
2621 * @server: initialized nfs_server handle
2622 * @fhandle: we fill in the pseudo-fs root file handle
2623 * @info: we fill in an FSINFO struct
2625 * Returns zero on success, or a negative errno.
2627 int nfs4_proc_get_rootfh(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
2628 struct nfs_fsinfo
*info
)
2632 status
= nfs4_lookup_root(server
, fhandle
, info
);
2633 if ((status
== -NFS4ERR_WRONGSEC
) &&
2634 !(server
->flags
& NFS_MOUNT_SECFLAVOUR
))
2635 status
= nfs4_do_find_root_sec(server
, fhandle
, info
);
2638 status
= nfs4_server_capabilities(server
, fhandle
);
2640 status
= nfs4_do_fsinfo(server
, fhandle
, info
);
2642 return nfs4_map_errors(status
);
2645 static int nfs4_proc_get_root(struct nfs_server
*server
, struct nfs_fh
*mntfh
,
2646 struct nfs_fsinfo
*info
)
2649 struct nfs_fattr
*fattr
= info
->fattr
;
2651 error
= nfs4_server_capabilities(server
, mntfh
);
2653 dprintk("nfs4_get_root: getcaps error = %d\n", -error
);
2657 error
= nfs4_proc_getattr(server
, mntfh
, fattr
);
2659 dprintk("nfs4_get_root: getattr error = %d\n", -error
);
2663 if (fattr
->valid
& NFS_ATTR_FATTR_FSID
&&
2664 !nfs_fsid_equal(&server
->fsid
, &fattr
->fsid
))
2665 memcpy(&server
->fsid
, &fattr
->fsid
, sizeof(server
->fsid
));
2671 * Get locations and (maybe) other attributes of a referral.
2672 * Note that we'll actually follow the referral later when
2673 * we detect fsid mismatch in inode revalidation
2675 static int nfs4_get_referral(struct rpc_clnt
*client
, struct inode
*dir
,
2676 const struct qstr
*name
, struct nfs_fattr
*fattr
,
2677 struct nfs_fh
*fhandle
)
2679 int status
= -ENOMEM
;
2680 struct page
*page
= NULL
;
2681 struct nfs4_fs_locations
*locations
= NULL
;
2683 page
= alloc_page(GFP_KERNEL
);
2686 locations
= kmalloc(sizeof(struct nfs4_fs_locations
), GFP_KERNEL
);
2687 if (locations
== NULL
)
2690 status
= nfs4_proc_fs_locations(client
, dir
, name
, locations
, page
);
2693 /* Make sure server returned a different fsid for the referral */
2694 if (nfs_fsid_equal(&NFS_SERVER(dir
)->fsid
, &locations
->fattr
.fsid
)) {
2695 dprintk("%s: server did not return a different fsid for"
2696 " a referral at %s\n", __func__
, name
->name
);
2700 /* Fixup attributes for the nfs_lookup() call to nfs_fhget() */
2701 nfs_fixup_referral_attributes(&locations
->fattr
);
2703 /* replace the lookup nfs_fattr with the locations nfs_fattr */
2704 memcpy(fattr
, &locations
->fattr
, sizeof(struct nfs_fattr
));
2705 memset(fhandle
, 0, sizeof(struct nfs_fh
));
2713 static int _nfs4_proc_getattr(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fattr
*fattr
)
2715 struct nfs4_getattr_arg args
= {
2717 .bitmask
= server
->attr_bitmask
,
2719 struct nfs4_getattr_res res
= {
2723 struct rpc_message msg
= {
2724 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GETATTR
],
2729 nfs_fattr_init(fattr
);
2730 return nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
2733 static int nfs4_proc_getattr(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fattr
*fattr
)
2735 struct nfs4_exception exception
= { };
2738 err
= nfs4_handle_exception(server
,
2739 _nfs4_proc_getattr(server
, fhandle
, fattr
),
2741 } while (exception
.retry
);
2746 * The file is not closed if it is opened due to the a request to change
2747 * the size of the file. The open call will not be needed once the
2748 * VFS layer lookup-intents are implemented.
2750 * Close is called when the inode is destroyed.
2751 * If we haven't opened the file for O_WRONLY, we
2752 * need to in the size_change case to obtain a stateid.
2755 * Because OPEN is always done by name in nfsv4, it is
2756 * possible that we opened a different file by the same
2757 * name. We can recognize this race condition, but we
2758 * can't do anything about it besides returning an error.
2760 * This will be fixed with VFS changes (lookup-intent).
2763 nfs4_proc_setattr(struct dentry
*dentry
, struct nfs_fattr
*fattr
,
2764 struct iattr
*sattr
)
2766 struct inode
*inode
= dentry
->d_inode
;
2767 struct rpc_cred
*cred
= NULL
;
2768 struct nfs4_state
*state
= NULL
;
2771 if (pnfs_ld_layoutret_on_setattr(inode
))
2772 pnfs_commit_and_return_layout(inode
);
2774 nfs_fattr_init(fattr
);
2776 /* Deal with open(O_TRUNC) */
2777 if (sattr
->ia_valid
& ATTR_OPEN
)
2778 sattr
->ia_valid
&= ~(ATTR_MTIME
|ATTR_CTIME
|ATTR_OPEN
);
2780 /* Optimization: if the end result is no change, don't RPC */
2781 if ((sattr
->ia_valid
& ~(ATTR_FILE
)) == 0)
2784 /* Search for an existing open(O_WRITE) file */
2785 if (sattr
->ia_valid
& ATTR_FILE
) {
2786 struct nfs_open_context
*ctx
;
2788 ctx
= nfs_file_open_context(sattr
->ia_file
);
2795 status
= nfs4_do_setattr(inode
, cred
, fattr
, sattr
, state
);
2797 nfs_setattr_update_inode(inode
, sattr
);
2801 static int _nfs4_proc_lookup(struct rpc_clnt
*clnt
, struct inode
*dir
,
2802 const struct qstr
*name
, struct nfs_fh
*fhandle
,
2803 struct nfs_fattr
*fattr
)
2805 struct nfs_server
*server
= NFS_SERVER(dir
);
2807 struct nfs4_lookup_arg args
= {
2808 .bitmask
= server
->attr_bitmask
,
2809 .dir_fh
= NFS_FH(dir
),
2812 struct nfs4_lookup_res res
= {
2817 struct rpc_message msg
= {
2818 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOOKUP
],
2823 nfs_fattr_init(fattr
);
2825 dprintk("NFS call lookup %s\n", name
->name
);
2826 status
= nfs4_call_sync(clnt
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
2827 dprintk("NFS reply lookup: %d\n", status
);
2831 static void nfs_fixup_secinfo_attributes(struct nfs_fattr
*fattr
)
2833 fattr
->valid
|= NFS_ATTR_FATTR_TYPE
| NFS_ATTR_FATTR_MODE
|
2834 NFS_ATTR_FATTR_NLINK
| NFS_ATTR_FATTR_MOUNTPOINT
;
2835 fattr
->mode
= S_IFDIR
| S_IRUGO
| S_IXUGO
;
2839 static int nfs4_proc_lookup_common(struct rpc_clnt
**clnt
, struct inode
*dir
,
2840 struct qstr
*name
, struct nfs_fh
*fhandle
,
2841 struct nfs_fattr
*fattr
)
2843 struct nfs4_exception exception
= { };
2844 struct rpc_clnt
*client
= *clnt
;
2847 err
= _nfs4_proc_lookup(client
, dir
, name
, fhandle
, fattr
);
2849 case -NFS4ERR_BADNAME
:
2852 case -NFS4ERR_MOVED
:
2853 err
= nfs4_get_referral(client
, dir
, name
, fattr
, fhandle
);
2855 case -NFS4ERR_WRONGSEC
:
2857 if (client
!= *clnt
)
2860 client
= nfs4_create_sec_client(client
, dir
, name
);
2862 return PTR_ERR(client
);
2864 exception
.retry
= 1;
2867 err
= nfs4_handle_exception(NFS_SERVER(dir
), err
, &exception
);
2869 } while (exception
.retry
);
2874 else if (client
!= *clnt
)
2875 rpc_shutdown_client(client
);
2880 static int nfs4_proc_lookup(struct inode
*dir
, struct qstr
*name
,
2881 struct nfs_fh
*fhandle
, struct nfs_fattr
*fattr
)
2884 struct rpc_clnt
*client
= NFS_CLIENT(dir
);
2886 status
= nfs4_proc_lookup_common(&client
, dir
, name
, fhandle
, fattr
);
2887 if (client
!= NFS_CLIENT(dir
)) {
2888 rpc_shutdown_client(client
);
2889 nfs_fixup_secinfo_attributes(fattr
);
2895 nfs4_proc_lookup_mountpoint(struct inode
*dir
, struct qstr
*name
,
2896 struct nfs_fh
*fhandle
, struct nfs_fattr
*fattr
)
2899 struct rpc_clnt
*client
= rpc_clone_client(NFS_CLIENT(dir
));
2901 status
= nfs4_proc_lookup_common(&client
, dir
, name
, fhandle
, fattr
);
2903 rpc_shutdown_client(client
);
2904 return ERR_PTR(status
);
2909 static int _nfs4_proc_access(struct inode
*inode
, struct nfs_access_entry
*entry
)
2911 struct nfs_server
*server
= NFS_SERVER(inode
);
2912 struct nfs4_accessargs args
= {
2913 .fh
= NFS_FH(inode
),
2914 .bitmask
= server
->cache_consistency_bitmask
,
2916 struct nfs4_accessres res
= {
2919 struct rpc_message msg
= {
2920 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_ACCESS
],
2923 .rpc_cred
= entry
->cred
,
2925 int mode
= entry
->mask
;
2929 * Determine which access bits we want to ask for...
2931 if (mode
& MAY_READ
)
2932 args
.access
|= NFS4_ACCESS_READ
;
2933 if (S_ISDIR(inode
->i_mode
)) {
2934 if (mode
& MAY_WRITE
)
2935 args
.access
|= NFS4_ACCESS_MODIFY
| NFS4_ACCESS_EXTEND
| NFS4_ACCESS_DELETE
;
2936 if (mode
& MAY_EXEC
)
2937 args
.access
|= NFS4_ACCESS_LOOKUP
;
2939 if (mode
& MAY_WRITE
)
2940 args
.access
|= NFS4_ACCESS_MODIFY
| NFS4_ACCESS_EXTEND
;
2941 if (mode
& MAY_EXEC
)
2942 args
.access
|= NFS4_ACCESS_EXECUTE
;
2945 res
.fattr
= nfs_alloc_fattr();
2946 if (res
.fattr
== NULL
)
2949 status
= nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
2951 nfs_access_set_mask(entry
, res
.access
);
2952 nfs_refresh_inode(inode
, res
.fattr
);
2954 nfs_free_fattr(res
.fattr
);
2958 static int nfs4_proc_access(struct inode
*inode
, struct nfs_access_entry
*entry
)
2960 struct nfs4_exception exception
= { };
2963 err
= nfs4_handle_exception(NFS_SERVER(inode
),
2964 _nfs4_proc_access(inode
, entry
),
2966 } while (exception
.retry
);
2971 * TODO: For the time being, we don't try to get any attributes
2972 * along with any of the zero-copy operations READ, READDIR,
2975 * In the case of the first three, we want to put the GETATTR
2976 * after the read-type operation -- this is because it is hard
2977 * to predict the length of a GETATTR response in v4, and thus
2978 * align the READ data correctly. This means that the GETATTR
2979 * may end up partially falling into the page cache, and we should
2980 * shift it into the 'tail' of the xdr_buf before processing.
2981 * To do this efficiently, we need to know the total length
2982 * of data received, which doesn't seem to be available outside
2985 * In the case of WRITE, we also want to put the GETATTR after
2986 * the operation -- in this case because we want to make sure
2987 * we get the post-operation mtime and size.
2989 * Both of these changes to the XDR layer would in fact be quite
2990 * minor, but I decided to leave them for a subsequent patch.
2992 static int _nfs4_proc_readlink(struct inode
*inode
, struct page
*page
,
2993 unsigned int pgbase
, unsigned int pglen
)
2995 struct nfs4_readlink args
= {
2996 .fh
= NFS_FH(inode
),
3001 struct nfs4_readlink_res res
;
3002 struct rpc_message msg
= {
3003 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_READLINK
],
3008 return nfs4_call_sync(NFS_SERVER(inode
)->client
, NFS_SERVER(inode
), &msg
, &args
.seq_args
, &res
.seq_res
, 0);
3011 static int nfs4_proc_readlink(struct inode
*inode
, struct page
*page
,
3012 unsigned int pgbase
, unsigned int pglen
)
3014 struct nfs4_exception exception
= { };
3017 err
= nfs4_handle_exception(NFS_SERVER(inode
),
3018 _nfs4_proc_readlink(inode
, page
, pgbase
, pglen
),
3020 } while (exception
.retry
);
3025 * This is just for mknod. open(O_CREAT) will always do ->open_context().
3028 nfs4_proc_create(struct inode
*dir
, struct dentry
*dentry
, struct iattr
*sattr
,
3031 struct nfs_open_context
*ctx
;
3032 struct nfs4_state
*state
;
3035 ctx
= alloc_nfs_open_context(dentry
, FMODE_READ
);
3037 return PTR_ERR(ctx
);
3039 sattr
->ia_mode
&= ~current_umask();
3040 state
= nfs4_do_open(dir
, dentry
, ctx
->mode
,
3041 flags
, sattr
, ctx
->cred
,
3042 &ctx
->mdsthreshold
);
3044 if (IS_ERR(state
)) {
3045 status
= PTR_ERR(state
);
3048 d_add(dentry
, igrab(state
->inode
));
3049 nfs_set_verifier(dentry
, nfs_save_change_attribute(dir
));
3052 put_nfs_open_context(ctx
);
3056 static int _nfs4_proc_remove(struct inode
*dir
, struct qstr
*name
)
3058 struct nfs_server
*server
= NFS_SERVER(dir
);
3059 struct nfs_removeargs args
= {
3063 struct nfs_removeres res
= {
3066 struct rpc_message msg
= {
3067 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_REMOVE
],
3073 status
= nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 1);
3075 update_changeattr(dir
, &res
.cinfo
);
3079 static int nfs4_proc_remove(struct inode
*dir
, struct qstr
*name
)
3081 struct nfs4_exception exception
= { };
3084 err
= nfs4_handle_exception(NFS_SERVER(dir
),
3085 _nfs4_proc_remove(dir
, name
),
3087 } while (exception
.retry
);
3091 static void nfs4_proc_unlink_setup(struct rpc_message
*msg
, struct inode
*dir
)
3093 struct nfs_server
*server
= NFS_SERVER(dir
);
3094 struct nfs_removeargs
*args
= msg
->rpc_argp
;
3095 struct nfs_removeres
*res
= msg
->rpc_resp
;
3097 res
->server
= server
;
3098 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_REMOVE
];
3099 nfs41_init_sequence(&args
->seq_args
, &res
->seq_res
, 1);
3102 static void nfs4_proc_unlink_rpc_prepare(struct rpc_task
*task
, struct nfs_unlinkdata
*data
)
3104 nfs4_setup_sequence(NFS_SERVER(data
->dir
),
3105 &data
->args
.seq_args
,
3110 static int nfs4_proc_unlink_done(struct rpc_task
*task
, struct inode
*dir
)
3112 struct nfs_removeres
*res
= task
->tk_msg
.rpc_resp
;
3114 if (!nfs4_sequence_done(task
, &res
->seq_res
))
3116 if (nfs4_async_handle_error(task
, res
->server
, NULL
) == -EAGAIN
)
3118 update_changeattr(dir
, &res
->cinfo
);
3122 static void nfs4_proc_rename_setup(struct rpc_message
*msg
, struct inode
*dir
)
3124 struct nfs_server
*server
= NFS_SERVER(dir
);
3125 struct nfs_renameargs
*arg
= msg
->rpc_argp
;
3126 struct nfs_renameres
*res
= msg
->rpc_resp
;
3128 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RENAME
];
3129 res
->server
= server
;
3130 nfs41_init_sequence(&arg
->seq_args
, &res
->seq_res
, 1);
3133 static void nfs4_proc_rename_rpc_prepare(struct rpc_task
*task
, struct nfs_renamedata
*data
)
3135 nfs4_setup_sequence(NFS_SERVER(data
->old_dir
),
3136 &data
->args
.seq_args
,
3141 static int nfs4_proc_rename_done(struct rpc_task
*task
, struct inode
*old_dir
,
3142 struct inode
*new_dir
)
3144 struct nfs_renameres
*res
= task
->tk_msg
.rpc_resp
;
3146 if (!nfs4_sequence_done(task
, &res
->seq_res
))
3148 if (nfs4_async_handle_error(task
, res
->server
, NULL
) == -EAGAIN
)
3151 update_changeattr(old_dir
, &res
->old_cinfo
);
3152 update_changeattr(new_dir
, &res
->new_cinfo
);
3156 static int _nfs4_proc_rename(struct inode
*old_dir
, struct qstr
*old_name
,
3157 struct inode
*new_dir
, struct qstr
*new_name
)
3159 struct nfs_server
*server
= NFS_SERVER(old_dir
);
3160 struct nfs_renameargs arg
= {
3161 .old_dir
= NFS_FH(old_dir
),
3162 .new_dir
= NFS_FH(new_dir
),
3163 .old_name
= old_name
,
3164 .new_name
= new_name
,
3166 struct nfs_renameres res
= {
3169 struct rpc_message msg
= {
3170 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RENAME
],
3174 int status
= -ENOMEM
;
3176 status
= nfs4_call_sync(server
->client
, server
, &msg
, &arg
.seq_args
, &res
.seq_res
, 1);
3178 update_changeattr(old_dir
, &res
.old_cinfo
);
3179 update_changeattr(new_dir
, &res
.new_cinfo
);
3184 static int nfs4_proc_rename(struct inode
*old_dir
, struct qstr
*old_name
,
3185 struct inode
*new_dir
, struct qstr
*new_name
)
3187 struct nfs4_exception exception
= { };
3190 err
= nfs4_handle_exception(NFS_SERVER(old_dir
),
3191 _nfs4_proc_rename(old_dir
, old_name
,
3194 } while (exception
.retry
);
3198 static int _nfs4_proc_link(struct inode
*inode
, struct inode
*dir
, struct qstr
*name
)
3200 struct nfs_server
*server
= NFS_SERVER(inode
);
3201 struct nfs4_link_arg arg
= {
3202 .fh
= NFS_FH(inode
),
3203 .dir_fh
= NFS_FH(dir
),
3205 .bitmask
= server
->attr_bitmask
,
3207 struct nfs4_link_res res
= {
3210 struct rpc_message msg
= {
3211 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LINK
],
3215 int status
= -ENOMEM
;
3217 res
.fattr
= nfs_alloc_fattr();
3218 if (res
.fattr
== NULL
)
3221 status
= nfs4_call_sync(server
->client
, server
, &msg
, &arg
.seq_args
, &res
.seq_res
, 1);
3223 update_changeattr(dir
, &res
.cinfo
);
3224 nfs_post_op_update_inode(inode
, res
.fattr
);
3227 nfs_free_fattr(res
.fattr
);
3231 static int nfs4_proc_link(struct inode
*inode
, struct inode
*dir
, struct qstr
*name
)
3233 struct nfs4_exception exception
= { };
3236 err
= nfs4_handle_exception(NFS_SERVER(inode
),
3237 _nfs4_proc_link(inode
, dir
, name
),
3239 } while (exception
.retry
);
3243 struct nfs4_createdata
{
3244 struct rpc_message msg
;
3245 struct nfs4_create_arg arg
;
3246 struct nfs4_create_res res
;
3248 struct nfs_fattr fattr
;
3251 static struct nfs4_createdata
*nfs4_alloc_createdata(struct inode
*dir
,
3252 struct qstr
*name
, struct iattr
*sattr
, u32 ftype
)
3254 struct nfs4_createdata
*data
;
3256 data
= kzalloc(sizeof(*data
), GFP_KERNEL
);
3258 struct nfs_server
*server
= NFS_SERVER(dir
);
3260 data
->msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_CREATE
];
3261 data
->msg
.rpc_argp
= &data
->arg
;
3262 data
->msg
.rpc_resp
= &data
->res
;
3263 data
->arg
.dir_fh
= NFS_FH(dir
);
3264 data
->arg
.server
= server
;
3265 data
->arg
.name
= name
;
3266 data
->arg
.attrs
= sattr
;
3267 data
->arg
.ftype
= ftype
;
3268 data
->arg
.bitmask
= server
->attr_bitmask
;
3269 data
->res
.server
= server
;
3270 data
->res
.fh
= &data
->fh
;
3271 data
->res
.fattr
= &data
->fattr
;
3272 nfs_fattr_init(data
->res
.fattr
);
3277 static int nfs4_do_create(struct inode
*dir
, struct dentry
*dentry
, struct nfs4_createdata
*data
)
3279 int status
= nfs4_call_sync(NFS_SERVER(dir
)->client
, NFS_SERVER(dir
), &data
->msg
,
3280 &data
->arg
.seq_args
, &data
->res
.seq_res
, 1);
3282 update_changeattr(dir
, &data
->res
.dir_cinfo
);
3283 status
= nfs_instantiate(dentry
, data
->res
.fh
, data
->res
.fattr
);
3288 static void nfs4_free_createdata(struct nfs4_createdata
*data
)
3293 static int _nfs4_proc_symlink(struct inode
*dir
, struct dentry
*dentry
,
3294 struct page
*page
, unsigned int len
, struct iattr
*sattr
)
3296 struct nfs4_createdata
*data
;
3297 int status
= -ENAMETOOLONG
;
3299 if (len
> NFS4_MAXPATHLEN
)
3303 data
= nfs4_alloc_createdata(dir
, &dentry
->d_name
, sattr
, NF4LNK
);
3307 data
->msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SYMLINK
];
3308 data
->arg
.u
.symlink
.pages
= &page
;
3309 data
->arg
.u
.symlink
.len
= len
;
3311 status
= nfs4_do_create(dir
, dentry
, data
);
3313 nfs4_free_createdata(data
);
3318 static int nfs4_proc_symlink(struct inode
*dir
, struct dentry
*dentry
,
3319 struct page
*page
, unsigned int len
, struct iattr
*sattr
)
3321 struct nfs4_exception exception
= { };
3324 err
= nfs4_handle_exception(NFS_SERVER(dir
),
3325 _nfs4_proc_symlink(dir
, dentry
, page
,
3328 } while (exception
.retry
);
3332 static int _nfs4_proc_mkdir(struct inode
*dir
, struct dentry
*dentry
,
3333 struct iattr
*sattr
)
3335 struct nfs4_createdata
*data
;
3336 int status
= -ENOMEM
;
3338 data
= nfs4_alloc_createdata(dir
, &dentry
->d_name
, sattr
, NF4DIR
);
3342 status
= nfs4_do_create(dir
, dentry
, data
);
3344 nfs4_free_createdata(data
);
3349 static int nfs4_proc_mkdir(struct inode
*dir
, struct dentry
*dentry
,
3350 struct iattr
*sattr
)
3352 struct nfs4_exception exception
= { };
3355 sattr
->ia_mode
&= ~current_umask();
3357 err
= nfs4_handle_exception(NFS_SERVER(dir
),
3358 _nfs4_proc_mkdir(dir
, dentry
, sattr
),
3360 } while (exception
.retry
);
3364 static int _nfs4_proc_readdir(struct dentry
*dentry
, struct rpc_cred
*cred
,
3365 u64 cookie
, struct page
**pages
, unsigned int count
, int plus
)
3367 struct inode
*dir
= dentry
->d_inode
;
3368 struct nfs4_readdir_arg args
= {
3373 .bitmask
= NFS_SERVER(dentry
->d_inode
)->attr_bitmask
,
3376 struct nfs4_readdir_res res
;
3377 struct rpc_message msg
= {
3378 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_READDIR
],
3385 dprintk("%s: dentry = %s/%s, cookie = %Lu\n", __func__
,
3386 dentry
->d_parent
->d_name
.name
,
3387 dentry
->d_name
.name
,
3388 (unsigned long long)cookie
);
3389 nfs4_setup_readdir(cookie
, NFS_I(dir
)->cookieverf
, dentry
, &args
);
3390 res
.pgbase
= args
.pgbase
;
3391 status
= nfs4_call_sync(NFS_SERVER(dir
)->client
, NFS_SERVER(dir
), &msg
, &args
.seq_args
, &res
.seq_res
, 0);
3393 memcpy(NFS_I(dir
)->cookieverf
, res
.verifier
.data
, NFS4_VERIFIER_SIZE
);
3394 status
+= args
.pgbase
;
3397 nfs_invalidate_atime(dir
);
3399 dprintk("%s: returns %d\n", __func__
, status
);
3403 static int nfs4_proc_readdir(struct dentry
*dentry
, struct rpc_cred
*cred
,
3404 u64 cookie
, struct page
**pages
, unsigned int count
, int plus
)
3406 struct nfs4_exception exception
= { };
3409 err
= nfs4_handle_exception(NFS_SERVER(dentry
->d_inode
),
3410 _nfs4_proc_readdir(dentry
, cred
, cookie
,
3411 pages
, count
, plus
),
3413 } while (exception
.retry
);
3417 static int _nfs4_proc_mknod(struct inode
*dir
, struct dentry
*dentry
,
3418 struct iattr
*sattr
, dev_t rdev
)
3420 struct nfs4_createdata
*data
;
3421 int mode
= sattr
->ia_mode
;
3422 int status
= -ENOMEM
;
3424 data
= nfs4_alloc_createdata(dir
, &dentry
->d_name
, sattr
, NF4SOCK
);
3429 data
->arg
.ftype
= NF4FIFO
;
3430 else if (S_ISBLK(mode
)) {
3431 data
->arg
.ftype
= NF4BLK
;
3432 data
->arg
.u
.device
.specdata1
= MAJOR(rdev
);
3433 data
->arg
.u
.device
.specdata2
= MINOR(rdev
);
3435 else if (S_ISCHR(mode
)) {
3436 data
->arg
.ftype
= NF4CHR
;
3437 data
->arg
.u
.device
.specdata1
= MAJOR(rdev
);
3438 data
->arg
.u
.device
.specdata2
= MINOR(rdev
);
3439 } else if (!S_ISSOCK(mode
)) {
3444 status
= nfs4_do_create(dir
, dentry
, data
);
3446 nfs4_free_createdata(data
);
3451 static int nfs4_proc_mknod(struct inode
*dir
, struct dentry
*dentry
,
3452 struct iattr
*sattr
, dev_t rdev
)
3454 struct nfs4_exception exception
= { };
3457 sattr
->ia_mode
&= ~current_umask();
3459 err
= nfs4_handle_exception(NFS_SERVER(dir
),
3460 _nfs4_proc_mknod(dir
, dentry
, sattr
, rdev
),
3462 } while (exception
.retry
);
3466 static int _nfs4_proc_statfs(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
3467 struct nfs_fsstat
*fsstat
)
3469 struct nfs4_statfs_arg args
= {
3471 .bitmask
= server
->attr_bitmask
,
3473 struct nfs4_statfs_res res
= {
3476 struct rpc_message msg
= {
3477 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_STATFS
],
3482 nfs_fattr_init(fsstat
->fattr
);
3483 return nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
3486 static int nfs4_proc_statfs(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fsstat
*fsstat
)
3488 struct nfs4_exception exception
= { };
3491 err
= nfs4_handle_exception(server
,
3492 _nfs4_proc_statfs(server
, fhandle
, fsstat
),
3494 } while (exception
.retry
);
3498 static int _nfs4_do_fsinfo(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
3499 struct nfs_fsinfo
*fsinfo
)
3501 struct nfs4_fsinfo_arg args
= {
3503 .bitmask
= server
->attr_bitmask
,
3505 struct nfs4_fsinfo_res res
= {
3508 struct rpc_message msg
= {
3509 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_FSINFO
],
3514 return nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
3517 static int nfs4_do_fsinfo(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fsinfo
*fsinfo
)
3519 struct nfs4_exception exception
= { };
3520 unsigned long now
= jiffies
;
3524 err
= _nfs4_do_fsinfo(server
, fhandle
, fsinfo
);
3526 struct nfs_client
*clp
= server
->nfs_client
;
3528 spin_lock(&clp
->cl_lock
);
3529 clp
->cl_lease_time
= fsinfo
->lease_time
* HZ
;
3530 clp
->cl_last_renewal
= now
;
3531 spin_unlock(&clp
->cl_lock
);
3534 err
= nfs4_handle_exception(server
, err
, &exception
);
3535 } while (exception
.retry
);
3539 static int nfs4_proc_fsinfo(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fsinfo
*fsinfo
)
3543 nfs_fattr_init(fsinfo
->fattr
);
3544 error
= nfs4_do_fsinfo(server
, fhandle
, fsinfo
);
3546 /* block layout checks this! */
3547 server
->pnfs_blksize
= fsinfo
->blksize
;
3548 set_pnfs_layoutdriver(server
, fhandle
, fsinfo
->layouttype
);
3554 static int _nfs4_proc_pathconf(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
3555 struct nfs_pathconf
*pathconf
)
3557 struct nfs4_pathconf_arg args
= {
3559 .bitmask
= server
->attr_bitmask
,
3561 struct nfs4_pathconf_res res
= {
3562 .pathconf
= pathconf
,
3564 struct rpc_message msg
= {
3565 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_PATHCONF
],
3570 /* None of the pathconf attributes are mandatory to implement */
3571 if ((args
.bitmask
[0] & nfs4_pathconf_bitmap
[0]) == 0) {
3572 memset(pathconf
, 0, sizeof(*pathconf
));
3576 nfs_fattr_init(pathconf
->fattr
);
3577 return nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
3580 static int nfs4_proc_pathconf(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
3581 struct nfs_pathconf
*pathconf
)
3583 struct nfs4_exception exception
= { };
3587 err
= nfs4_handle_exception(server
,
3588 _nfs4_proc_pathconf(server
, fhandle
, pathconf
),
3590 } while (exception
.retry
);
3594 int nfs4_set_rw_stateid(nfs4_stateid
*stateid
,
3595 const struct nfs_open_context
*ctx
,
3596 const struct nfs_lock_context
*l_ctx
,
3599 const struct nfs_lockowner
*lockowner
= NULL
;
3602 lockowner
= &l_ctx
->lockowner
;
3603 return nfs4_select_rw_stateid(stateid
, ctx
->state
, fmode
, lockowner
);
3605 EXPORT_SYMBOL_GPL(nfs4_set_rw_stateid
);
3607 static bool nfs4_stateid_is_current(nfs4_stateid
*stateid
,
3608 const struct nfs_open_context
*ctx
,
3609 const struct nfs_lock_context
*l_ctx
,
3612 nfs4_stateid current_stateid
;
3614 if (nfs4_set_rw_stateid(¤t_stateid
, ctx
, l_ctx
, fmode
))
3616 return nfs4_stateid_match(stateid
, ¤t_stateid
);
3619 static bool nfs4_error_stateid_expired(int err
)
3622 case -NFS4ERR_DELEG_REVOKED
:
3623 case -NFS4ERR_ADMIN_REVOKED
:
3624 case -NFS4ERR_BAD_STATEID
:
3625 case -NFS4ERR_STALE_STATEID
:
3626 case -NFS4ERR_OLD_STATEID
:
3627 case -NFS4ERR_OPENMODE
:
3628 case -NFS4ERR_EXPIRED
:
3634 void __nfs4_read_done_cb(struct nfs_read_data
*data
)
3636 nfs_invalidate_atime(data
->header
->inode
);
3639 static int nfs4_read_done_cb(struct rpc_task
*task
, struct nfs_read_data
*data
)
3641 struct nfs_server
*server
= NFS_SERVER(data
->header
->inode
);
3643 if (nfs4_async_handle_error(task
, server
, data
->args
.context
->state
) == -EAGAIN
) {
3644 rpc_restart_call_prepare(task
);
3648 __nfs4_read_done_cb(data
);
3649 if (task
->tk_status
> 0)
3650 renew_lease(server
, data
->timestamp
);
3654 static bool nfs4_read_stateid_changed(struct rpc_task
*task
,
3655 struct nfs_readargs
*args
)
3658 if (!nfs4_error_stateid_expired(task
->tk_status
) ||
3659 nfs4_stateid_is_current(&args
->stateid
,
3664 rpc_restart_call_prepare(task
);
3668 static int nfs4_read_done(struct rpc_task
*task
, struct nfs_read_data
*data
)
3671 dprintk("--> %s\n", __func__
);
3673 if (!nfs4_sequence_done(task
, &data
->res
.seq_res
))
3675 if (nfs4_read_stateid_changed(task
, &data
->args
))
3677 return data
->read_done_cb
? data
->read_done_cb(task
, data
) :
3678 nfs4_read_done_cb(task
, data
);
3681 static void nfs4_proc_read_setup(struct nfs_read_data
*data
, struct rpc_message
*msg
)
3683 data
->timestamp
= jiffies
;
3684 data
->read_done_cb
= nfs4_read_done_cb
;
3685 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_READ
];
3686 nfs41_init_sequence(&data
->args
.seq_args
, &data
->res
.seq_res
, 0);
3689 static void nfs4_proc_read_rpc_prepare(struct rpc_task
*task
, struct nfs_read_data
*data
)
3691 if (nfs4_setup_sequence(NFS_SERVER(data
->header
->inode
),
3692 &data
->args
.seq_args
,
3696 nfs4_set_rw_stateid(&data
->args
.stateid
, data
->args
.context
,
3697 data
->args
.lock_context
, FMODE_READ
);
3700 static int nfs4_write_done_cb(struct rpc_task
*task
, struct nfs_write_data
*data
)
3702 struct inode
*inode
= data
->header
->inode
;
3704 if (nfs4_async_handle_error(task
, NFS_SERVER(inode
), data
->args
.context
->state
) == -EAGAIN
) {
3705 rpc_restart_call_prepare(task
);
3708 if (task
->tk_status
>= 0) {
3709 renew_lease(NFS_SERVER(inode
), data
->timestamp
);
3710 nfs_post_op_update_inode_force_wcc(inode
, &data
->fattr
);
3715 static bool nfs4_write_stateid_changed(struct rpc_task
*task
,
3716 struct nfs_writeargs
*args
)
3719 if (!nfs4_error_stateid_expired(task
->tk_status
) ||
3720 nfs4_stateid_is_current(&args
->stateid
,
3725 rpc_restart_call_prepare(task
);
3729 static int nfs4_write_done(struct rpc_task
*task
, struct nfs_write_data
*data
)
3731 if (!nfs4_sequence_done(task
, &data
->res
.seq_res
))
3733 if (nfs4_write_stateid_changed(task
, &data
->args
))
3735 return data
->write_done_cb
? data
->write_done_cb(task
, data
) :
3736 nfs4_write_done_cb(task
, data
);
3740 bool nfs4_write_need_cache_consistency_data(const struct nfs_write_data
*data
)
3742 const struct nfs_pgio_header
*hdr
= data
->header
;
3744 /* Don't request attributes for pNFS or O_DIRECT writes */
3745 if (data
->ds_clp
!= NULL
|| hdr
->dreq
!= NULL
)
3747 /* Otherwise, request attributes if and only if we don't hold
3750 return nfs4_have_delegation(hdr
->inode
, FMODE_READ
) == 0;
3753 static void nfs4_proc_write_setup(struct nfs_write_data
*data
, struct rpc_message
*msg
)
3755 struct nfs_server
*server
= NFS_SERVER(data
->header
->inode
);
3757 if (!nfs4_write_need_cache_consistency_data(data
)) {
3758 data
->args
.bitmask
= NULL
;
3759 data
->res
.fattr
= NULL
;
3761 data
->args
.bitmask
= server
->cache_consistency_bitmask
;
3763 if (!data
->write_done_cb
)
3764 data
->write_done_cb
= nfs4_write_done_cb
;
3765 data
->res
.server
= server
;
3766 data
->timestamp
= jiffies
;
3768 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_WRITE
];
3769 nfs41_init_sequence(&data
->args
.seq_args
, &data
->res
.seq_res
, 1);
3772 static void nfs4_proc_write_rpc_prepare(struct rpc_task
*task
, struct nfs_write_data
*data
)
3774 if (nfs4_setup_sequence(NFS_SERVER(data
->header
->inode
),
3775 &data
->args
.seq_args
,
3779 nfs4_set_rw_stateid(&data
->args
.stateid
, data
->args
.context
,
3780 data
->args
.lock_context
, FMODE_WRITE
);
3783 static void nfs4_proc_commit_rpc_prepare(struct rpc_task
*task
, struct nfs_commit_data
*data
)
3785 nfs4_setup_sequence(NFS_SERVER(data
->inode
),
3786 &data
->args
.seq_args
,
3791 static int nfs4_commit_done_cb(struct rpc_task
*task
, struct nfs_commit_data
*data
)
3793 struct inode
*inode
= data
->inode
;
3795 if (nfs4_async_handle_error(task
, NFS_SERVER(inode
), NULL
) == -EAGAIN
) {
3796 rpc_restart_call_prepare(task
);
3802 static int nfs4_commit_done(struct rpc_task
*task
, struct nfs_commit_data
*data
)
3804 if (!nfs4_sequence_done(task
, &data
->res
.seq_res
))
3806 return data
->commit_done_cb(task
, data
);
3809 static void nfs4_proc_commit_setup(struct nfs_commit_data
*data
, struct rpc_message
*msg
)
3811 struct nfs_server
*server
= NFS_SERVER(data
->inode
);
3813 if (data
->commit_done_cb
== NULL
)
3814 data
->commit_done_cb
= nfs4_commit_done_cb
;
3815 data
->res
.server
= server
;
3816 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_COMMIT
];
3817 nfs41_init_sequence(&data
->args
.seq_args
, &data
->res
.seq_res
, 1);
3820 struct nfs4_renewdata
{
3821 struct nfs_client
*client
;
3822 unsigned long timestamp
;
3826 * nfs4_proc_async_renew(): This is not one of the nfs_rpc_ops; it is a special
3827 * standalone procedure for queueing an asynchronous RENEW.
3829 static void nfs4_renew_release(void *calldata
)
3831 struct nfs4_renewdata
*data
= calldata
;
3832 struct nfs_client
*clp
= data
->client
;
3834 if (atomic_read(&clp
->cl_count
) > 1)
3835 nfs4_schedule_state_renewal(clp
);
3836 nfs_put_client(clp
);
3840 static void nfs4_renew_done(struct rpc_task
*task
, void *calldata
)
3842 struct nfs4_renewdata
*data
= calldata
;
3843 struct nfs_client
*clp
= data
->client
;
3844 unsigned long timestamp
= data
->timestamp
;
3846 if (task
->tk_status
< 0) {
3847 /* Unless we're shutting down, schedule state recovery! */
3848 if (test_bit(NFS_CS_RENEWD
, &clp
->cl_res_state
) == 0)
3850 if (task
->tk_status
!= NFS4ERR_CB_PATH_DOWN
) {
3851 nfs4_schedule_lease_recovery(clp
);
3854 nfs4_schedule_path_down_recovery(clp
);
3856 do_renew_lease(clp
, timestamp
);
3859 static const struct rpc_call_ops nfs4_renew_ops
= {
3860 .rpc_call_done
= nfs4_renew_done
,
3861 .rpc_release
= nfs4_renew_release
,
3864 static int nfs4_proc_async_renew(struct nfs_client
*clp
, struct rpc_cred
*cred
, unsigned renew_flags
)
3866 struct rpc_message msg
= {
3867 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RENEW
],
3871 struct nfs4_renewdata
*data
;
3873 if (renew_flags
== 0)
3875 if (!atomic_inc_not_zero(&clp
->cl_count
))
3877 data
= kmalloc(sizeof(*data
), GFP_NOFS
);
3881 data
->timestamp
= jiffies
;
3882 return rpc_call_async(clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
,
3883 &nfs4_renew_ops
, data
);
3886 static int nfs4_proc_renew(struct nfs_client
*clp
, struct rpc_cred
*cred
)
3888 struct rpc_message msg
= {
3889 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RENEW
],
3893 unsigned long now
= jiffies
;
3896 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
3899 do_renew_lease(clp
, now
);
3903 static inline int nfs4_server_supports_acls(struct nfs_server
*server
)
3905 return (server
->caps
& NFS_CAP_ACLS
)
3906 && (server
->acl_bitmask
& ACL4_SUPPORT_ALLOW_ACL
)
3907 && (server
->acl_bitmask
& ACL4_SUPPORT_DENY_ACL
);
3910 /* Assuming that XATTR_SIZE_MAX is a multiple of PAGE_SIZE, and that
3911 * it's OK to put sizeof(void) * (XATTR_SIZE_MAX/PAGE_SIZE) bytes on
3914 #define NFS4ACL_MAXPAGES DIV_ROUND_UP(XATTR_SIZE_MAX, PAGE_SIZE)
3916 static int buf_to_pages_noslab(const void *buf
, size_t buflen
,
3917 struct page
**pages
, unsigned int *pgbase
)
3919 struct page
*newpage
, **spages
;
3925 len
= min_t(size_t, PAGE_SIZE
, buflen
);
3926 newpage
= alloc_page(GFP_KERNEL
);
3928 if (newpage
== NULL
)
3930 memcpy(page_address(newpage
), buf
, len
);
3935 } while (buflen
!= 0);
3941 __free_page(spages
[rc
-1]);
3945 struct nfs4_cached_acl
{
3951 static void nfs4_set_cached_acl(struct inode
*inode
, struct nfs4_cached_acl
*acl
)
3953 struct nfs_inode
*nfsi
= NFS_I(inode
);
3955 spin_lock(&inode
->i_lock
);
3956 kfree(nfsi
->nfs4_acl
);
3957 nfsi
->nfs4_acl
= acl
;
3958 spin_unlock(&inode
->i_lock
);
3961 static void nfs4_zap_acl_attr(struct inode
*inode
)
3963 nfs4_set_cached_acl(inode
, NULL
);
3966 static inline ssize_t
nfs4_read_cached_acl(struct inode
*inode
, char *buf
, size_t buflen
)
3968 struct nfs_inode
*nfsi
= NFS_I(inode
);
3969 struct nfs4_cached_acl
*acl
;
3972 spin_lock(&inode
->i_lock
);
3973 acl
= nfsi
->nfs4_acl
;
3976 if (buf
== NULL
) /* user is just asking for length */
3978 if (acl
->cached
== 0)
3980 ret
= -ERANGE
; /* see getxattr(2) man page */
3981 if (acl
->len
> buflen
)
3983 memcpy(buf
, acl
->data
, acl
->len
);
3987 spin_unlock(&inode
->i_lock
);
3991 static void nfs4_write_cached_acl(struct inode
*inode
, struct page
**pages
, size_t pgbase
, size_t acl_len
)
3993 struct nfs4_cached_acl
*acl
;
3994 size_t buflen
= sizeof(*acl
) + acl_len
;
3996 if (buflen
<= PAGE_SIZE
) {
3997 acl
= kmalloc(buflen
, GFP_KERNEL
);
4001 _copy_from_pages(acl
->data
, pages
, pgbase
, acl_len
);
4003 acl
= kmalloc(sizeof(*acl
), GFP_KERNEL
);
4010 nfs4_set_cached_acl(inode
, acl
);
4014 * The getxattr API returns the required buffer length when called with a
4015 * NULL buf. The NFSv4 acl tool then calls getxattr again after allocating
4016 * the required buf. On a NULL buf, we send a page of data to the server
4017 * guessing that the ACL request can be serviced by a page. If so, we cache
4018 * up to the page of ACL data, and the 2nd call to getxattr is serviced by
4019 * the cache. If not so, we throw away the page, and cache the required
4020 * length. The next getxattr call will then produce another round trip to
4021 * the server, this time with the input buf of the required size.
4023 static ssize_t
__nfs4_get_acl_uncached(struct inode
*inode
, void *buf
, size_t buflen
)
4025 struct page
*pages
[NFS4ACL_MAXPAGES
] = {NULL
, };
4026 struct nfs_getaclargs args
= {
4027 .fh
= NFS_FH(inode
),
4031 struct nfs_getaclres res
= {
4034 struct rpc_message msg
= {
4035 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GETACL
],
4039 unsigned int npages
= DIV_ROUND_UP(buflen
, PAGE_SIZE
);
4040 int ret
= -ENOMEM
, i
;
4042 /* As long as we're doing a round trip to the server anyway,
4043 * let's be prepared for a page of acl data. */
4046 if (npages
> ARRAY_SIZE(pages
))
4049 for (i
= 0; i
< npages
; i
++) {
4050 pages
[i
] = alloc_page(GFP_KERNEL
);
4055 /* for decoding across pages */
4056 res
.acl_scratch
= alloc_page(GFP_KERNEL
);
4057 if (!res
.acl_scratch
)
4060 args
.acl_len
= npages
* PAGE_SIZE
;
4061 args
.acl_pgbase
= 0;
4063 dprintk("%s buf %p buflen %zu npages %d args.acl_len %zu\n",
4064 __func__
, buf
, buflen
, npages
, args
.acl_len
);
4065 ret
= nfs4_call_sync(NFS_SERVER(inode
)->client
, NFS_SERVER(inode
),
4066 &msg
, &args
.seq_args
, &res
.seq_res
, 0);
4070 /* Handle the case where the passed-in buffer is too short */
4071 if (res
.acl_flags
& NFS4_ACL_TRUNC
) {
4072 /* Did the user only issue a request for the acl length? */
4078 nfs4_write_cached_acl(inode
, pages
, res
.acl_data_offset
, res
.acl_len
);
4080 if (res
.acl_len
> buflen
) {
4084 _copy_from_pages(buf
, pages
, res
.acl_data_offset
, res
.acl_len
);
4089 for (i
= 0; i
< npages
; i
++)
4091 __free_page(pages
[i
]);
4092 if (res
.acl_scratch
)
4093 __free_page(res
.acl_scratch
);
4097 static ssize_t
nfs4_get_acl_uncached(struct inode
*inode
, void *buf
, size_t buflen
)
4099 struct nfs4_exception exception
= { };
4102 ret
= __nfs4_get_acl_uncached(inode
, buf
, buflen
);
4105 ret
= nfs4_handle_exception(NFS_SERVER(inode
), ret
, &exception
);
4106 } while (exception
.retry
);
4110 static ssize_t
nfs4_proc_get_acl(struct inode
*inode
, void *buf
, size_t buflen
)
4112 struct nfs_server
*server
= NFS_SERVER(inode
);
4115 if (!nfs4_server_supports_acls(server
))
4117 ret
= nfs_revalidate_inode(server
, inode
);
4120 if (NFS_I(inode
)->cache_validity
& NFS_INO_INVALID_ACL
)
4121 nfs_zap_acl_cache(inode
);
4122 ret
= nfs4_read_cached_acl(inode
, buf
, buflen
);
4124 /* -ENOENT is returned if there is no ACL or if there is an ACL
4125 * but no cached acl data, just the acl length */
4127 return nfs4_get_acl_uncached(inode
, buf
, buflen
);
4130 static int __nfs4_proc_set_acl(struct inode
*inode
, const void *buf
, size_t buflen
)
4132 struct nfs_server
*server
= NFS_SERVER(inode
);
4133 struct page
*pages
[NFS4ACL_MAXPAGES
];
4134 struct nfs_setaclargs arg
= {
4135 .fh
= NFS_FH(inode
),
4139 struct nfs_setaclres res
;
4140 struct rpc_message msg
= {
4141 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETACL
],
4145 unsigned int npages
= DIV_ROUND_UP(buflen
, PAGE_SIZE
);
4148 if (!nfs4_server_supports_acls(server
))
4150 if (npages
> ARRAY_SIZE(pages
))
4152 i
= buf_to_pages_noslab(buf
, buflen
, arg
.acl_pages
, &arg
.acl_pgbase
);
4155 nfs4_inode_return_delegation(inode
);
4156 ret
= nfs4_call_sync(server
->client
, server
, &msg
, &arg
.seq_args
, &res
.seq_res
, 1);
4159 * Free each page after tx, so the only ref left is
4160 * held by the network stack
4163 put_page(pages
[i
-1]);
4166 * Acl update can result in inode attribute update.
4167 * so mark the attribute cache invalid.
4169 spin_lock(&inode
->i_lock
);
4170 NFS_I(inode
)->cache_validity
|= NFS_INO_INVALID_ATTR
;
4171 spin_unlock(&inode
->i_lock
);
4172 nfs_access_zap_cache(inode
);
4173 nfs_zap_acl_cache(inode
);
4177 static int nfs4_proc_set_acl(struct inode
*inode
, const void *buf
, size_t buflen
)
4179 struct nfs4_exception exception
= { };
4182 err
= nfs4_handle_exception(NFS_SERVER(inode
),
4183 __nfs4_proc_set_acl(inode
, buf
, buflen
),
4185 } while (exception
.retry
);
4190 nfs4_async_handle_error(struct rpc_task
*task
, const struct nfs_server
*server
, struct nfs4_state
*state
)
4192 struct nfs_client
*clp
= server
->nfs_client
;
4194 if (task
->tk_status
>= 0)
4196 switch(task
->tk_status
) {
4197 case -NFS4ERR_DELEG_REVOKED
:
4198 case -NFS4ERR_ADMIN_REVOKED
:
4199 case -NFS4ERR_BAD_STATEID
:
4202 nfs_remove_bad_delegation(state
->inode
);
4203 case -NFS4ERR_OPENMODE
:
4206 if (nfs4_schedule_stateid_recovery(server
, state
) < 0)
4207 goto stateid_invalid
;
4208 goto wait_on_recovery
;
4209 case -NFS4ERR_EXPIRED
:
4210 if (state
!= NULL
) {
4211 if (nfs4_schedule_stateid_recovery(server
, state
) < 0)
4212 goto stateid_invalid
;
4214 case -NFS4ERR_STALE_STATEID
:
4215 case -NFS4ERR_STALE_CLIENTID
:
4216 nfs4_schedule_lease_recovery(clp
);
4217 goto wait_on_recovery
;
4218 #if defined(CONFIG_NFS_V4_1)
4219 case -NFS4ERR_BADSESSION
:
4220 case -NFS4ERR_BADSLOT
:
4221 case -NFS4ERR_BAD_HIGH_SLOT
:
4222 case -NFS4ERR_DEADSESSION
:
4223 case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION
:
4224 case -NFS4ERR_SEQ_FALSE_RETRY
:
4225 case -NFS4ERR_SEQ_MISORDERED
:
4226 dprintk("%s ERROR %d, Reset session\n", __func__
,
4228 nfs4_schedule_session_recovery(clp
->cl_session
, task
->tk_status
);
4229 task
->tk_status
= 0;
4231 #endif /* CONFIG_NFS_V4_1 */
4232 case -NFS4ERR_DELAY
:
4233 nfs_inc_server_stats(server
, NFSIOS_DELAY
);
4234 case -NFS4ERR_GRACE
:
4235 rpc_delay(task
, NFS4_POLL_RETRY_MAX
);
4236 task
->tk_status
= 0;
4238 case -NFS4ERR_RETRY_UNCACHED_REP
:
4239 case -NFS4ERR_OLD_STATEID
:
4240 task
->tk_status
= 0;
4243 task
->tk_status
= nfs4_map_errors(task
->tk_status
);
4246 task
->tk_status
= -EIO
;
4249 rpc_sleep_on(&clp
->cl_rpcwaitq
, task
, NULL
);
4250 if (test_bit(NFS4CLNT_MANAGER_RUNNING
, &clp
->cl_state
) == 0)
4251 rpc_wake_up_queued_task(&clp
->cl_rpcwaitq
, task
);
4252 task
->tk_status
= 0;
4256 static void nfs4_init_boot_verifier(const struct nfs_client
*clp
,
4257 nfs4_verifier
*bootverf
)
4261 if (test_bit(NFS4CLNT_PURGE_STATE
, &clp
->cl_state
)) {
4262 /* An impossible timestamp guarantees this value
4263 * will never match a generated boot time. */
4265 verf
[1] = (__be32
)(NSEC_PER_SEC
+ 1);
4267 struct nfs_net
*nn
= net_generic(clp
->cl_net
, nfs_net_id
);
4268 verf
[0] = (__be32
)nn
->boot_time
.tv_sec
;
4269 verf
[1] = (__be32
)nn
->boot_time
.tv_nsec
;
4271 memcpy(bootverf
->data
, verf
, sizeof(bootverf
->data
));
4275 nfs4_init_nonuniform_client_string(const struct nfs_client
*clp
,
4276 char *buf
, size_t len
)
4278 unsigned int result
;
4281 result
= scnprintf(buf
, len
, "Linux NFSv4.0 %s/%s %s",
4283 rpc_peeraddr2str(clp
->cl_rpcclient
,
4285 rpc_peeraddr2str(clp
->cl_rpcclient
,
4286 RPC_DISPLAY_PROTO
));
4292 nfs4_init_uniform_client_string(const struct nfs_client
*clp
,
4293 char *buf
, size_t len
)
4295 char *nodename
= clp
->cl_rpcclient
->cl_nodename
;
4297 if (nfs4_client_id_uniquifier
[0] != '\0')
4298 nodename
= nfs4_client_id_uniquifier
;
4299 return scnprintf(buf
, len
, "Linux NFSv%u.%u %s",
4300 clp
->rpc_ops
->version
, clp
->cl_minorversion
,
4305 * nfs4_proc_setclientid - Negotiate client ID
4306 * @clp: state data structure
4307 * @program: RPC program for NFSv4 callback service
4308 * @port: IP port number for NFS4 callback service
4309 * @cred: RPC credential to use for this call
4310 * @res: where to place the result
4312 * Returns zero, a negative errno, or a negative NFS4ERR status code.
4314 int nfs4_proc_setclientid(struct nfs_client
*clp
, u32 program
,
4315 unsigned short port
, struct rpc_cred
*cred
,
4316 struct nfs4_setclientid_res
*res
)
4318 nfs4_verifier sc_verifier
;
4319 struct nfs4_setclientid setclientid
= {
4320 .sc_verifier
= &sc_verifier
,
4322 .sc_cb_ident
= clp
->cl_cb_ident
,
4324 struct rpc_message msg
= {
4325 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETCLIENTID
],
4326 .rpc_argp
= &setclientid
,
4332 /* nfs_client_id4 */
4333 nfs4_init_boot_verifier(clp
, &sc_verifier
);
4334 if (test_bit(NFS_CS_MIGRATION
, &clp
->cl_flags
))
4335 setclientid
.sc_name_len
=
4336 nfs4_init_uniform_client_string(clp
,
4337 setclientid
.sc_name
,
4338 sizeof(setclientid
.sc_name
));
4340 setclientid
.sc_name_len
=
4341 nfs4_init_nonuniform_client_string(clp
,
4342 setclientid
.sc_name
,
4343 sizeof(setclientid
.sc_name
));
4346 setclientid
.sc_netid_len
= scnprintf(setclientid
.sc_netid
,
4347 sizeof(setclientid
.sc_netid
),
4348 rpc_peeraddr2str(clp
->cl_rpcclient
,
4349 RPC_DISPLAY_NETID
));
4351 setclientid
.sc_uaddr_len
= scnprintf(setclientid
.sc_uaddr
,
4352 sizeof(setclientid
.sc_uaddr
), "%s.%u.%u",
4353 clp
->cl_ipaddr
, port
>> 8, port
& 255);
4355 dprintk("NFS call setclientid auth=%s, '%.*s'\n",
4356 clp
->cl_rpcclient
->cl_auth
->au_ops
->au_name
,
4357 setclientid
.sc_name_len
, setclientid
.sc_name
);
4358 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
4359 dprintk("NFS reply setclientid: %d\n", status
);
4364 * nfs4_proc_setclientid_confirm - Confirm client ID
4365 * @clp: state data structure
4366 * @res: result of a previous SETCLIENTID
4367 * @cred: RPC credential to use for this call
4369 * Returns zero, a negative errno, or a negative NFS4ERR status code.
4371 int nfs4_proc_setclientid_confirm(struct nfs_client
*clp
,
4372 struct nfs4_setclientid_res
*arg
,
4373 struct rpc_cred
*cred
)
4375 struct rpc_message msg
= {
4376 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETCLIENTID_CONFIRM
],
4382 dprintk("NFS call setclientid_confirm auth=%s, (client ID %llx)\n",
4383 clp
->cl_rpcclient
->cl_auth
->au_ops
->au_name
,
4385 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
4386 dprintk("NFS reply setclientid_confirm: %d\n", status
);
4390 struct nfs4_delegreturndata
{
4391 struct nfs4_delegreturnargs args
;
4392 struct nfs4_delegreturnres res
;
4394 nfs4_stateid stateid
;
4395 unsigned long timestamp
;
4396 struct nfs_fattr fattr
;
4400 static void nfs4_delegreturn_done(struct rpc_task
*task
, void *calldata
)
4402 struct nfs4_delegreturndata
*data
= calldata
;
4404 if (!nfs4_sequence_done(task
, &data
->res
.seq_res
))
4407 switch (task
->tk_status
) {
4408 case -NFS4ERR_STALE_STATEID
:
4409 case -NFS4ERR_EXPIRED
:
4411 renew_lease(data
->res
.server
, data
->timestamp
);
4414 if (nfs4_async_handle_error(task
, data
->res
.server
, NULL
) ==
4416 rpc_restart_call_prepare(task
);
4420 data
->rpc_status
= task
->tk_status
;
4423 static void nfs4_delegreturn_release(void *calldata
)
4428 #if defined(CONFIG_NFS_V4_1)
4429 static void nfs4_delegreturn_prepare(struct rpc_task
*task
, void *data
)
4431 struct nfs4_delegreturndata
*d_data
;
4433 d_data
= (struct nfs4_delegreturndata
*)data
;
4435 nfs4_setup_sequence(d_data
->res
.server
,
4436 &d_data
->args
.seq_args
,
4437 &d_data
->res
.seq_res
,
4440 #endif /* CONFIG_NFS_V4_1 */
4442 static const struct rpc_call_ops nfs4_delegreturn_ops
= {
4443 #if defined(CONFIG_NFS_V4_1)
4444 .rpc_call_prepare
= nfs4_delegreturn_prepare
,
4445 #endif /* CONFIG_NFS_V4_1 */
4446 .rpc_call_done
= nfs4_delegreturn_done
,
4447 .rpc_release
= nfs4_delegreturn_release
,
4450 static int _nfs4_proc_delegreturn(struct inode
*inode
, struct rpc_cred
*cred
, const nfs4_stateid
*stateid
, int issync
)
4452 struct nfs4_delegreturndata
*data
;
4453 struct nfs_server
*server
= NFS_SERVER(inode
);
4454 struct rpc_task
*task
;
4455 struct rpc_message msg
= {
4456 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_DELEGRETURN
],
4459 struct rpc_task_setup task_setup_data
= {
4460 .rpc_client
= server
->client
,
4461 .rpc_message
= &msg
,
4462 .callback_ops
= &nfs4_delegreturn_ops
,
4463 .flags
= RPC_TASK_ASYNC
,
4467 data
= kzalloc(sizeof(*data
), GFP_NOFS
);
4470 nfs41_init_sequence(&data
->args
.seq_args
, &data
->res
.seq_res
, 1);
4471 data
->args
.fhandle
= &data
->fh
;
4472 data
->args
.stateid
= &data
->stateid
;
4473 data
->args
.bitmask
= server
->cache_consistency_bitmask
;
4474 nfs_copy_fh(&data
->fh
, NFS_FH(inode
));
4475 nfs4_stateid_copy(&data
->stateid
, stateid
);
4476 data
->res
.fattr
= &data
->fattr
;
4477 data
->res
.server
= server
;
4478 nfs_fattr_init(data
->res
.fattr
);
4479 data
->timestamp
= jiffies
;
4480 data
->rpc_status
= 0;
4482 task_setup_data
.callback_data
= data
;
4483 msg
.rpc_argp
= &data
->args
;
4484 msg
.rpc_resp
= &data
->res
;
4485 task
= rpc_run_task(&task_setup_data
);
4487 return PTR_ERR(task
);
4490 status
= nfs4_wait_for_completion_rpc_task(task
);
4493 status
= data
->rpc_status
;
4495 nfs_post_op_update_inode_force_wcc(inode
, &data
->fattr
);
4497 nfs_refresh_inode(inode
, &data
->fattr
);
4503 int nfs4_proc_delegreturn(struct inode
*inode
, struct rpc_cred
*cred
, const nfs4_stateid
*stateid
, int issync
)
4505 struct nfs_server
*server
= NFS_SERVER(inode
);
4506 struct nfs4_exception exception
= { };
4509 err
= _nfs4_proc_delegreturn(inode
, cred
, stateid
, issync
);
4511 case -NFS4ERR_STALE_STATEID
:
4512 case -NFS4ERR_EXPIRED
:
4516 err
= nfs4_handle_exception(server
, err
, &exception
);
4517 } while (exception
.retry
);
4521 #define NFS4_LOCK_MINTIMEOUT (1 * HZ)
4522 #define NFS4_LOCK_MAXTIMEOUT (30 * HZ)
4525 * sleep, with exponential backoff, and retry the LOCK operation.
4527 static unsigned long
4528 nfs4_set_lock_task_retry(unsigned long timeout
)
4530 freezable_schedule_timeout_killable(timeout
);
4532 if (timeout
> NFS4_LOCK_MAXTIMEOUT
)
4533 return NFS4_LOCK_MAXTIMEOUT
;
4537 static int _nfs4_proc_getlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
4539 struct inode
*inode
= state
->inode
;
4540 struct nfs_server
*server
= NFS_SERVER(inode
);
4541 struct nfs_client
*clp
= server
->nfs_client
;
4542 struct nfs_lockt_args arg
= {
4543 .fh
= NFS_FH(inode
),
4546 struct nfs_lockt_res res
= {
4549 struct rpc_message msg
= {
4550 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOCKT
],
4553 .rpc_cred
= state
->owner
->so_cred
,
4555 struct nfs4_lock_state
*lsp
;
4558 arg
.lock_owner
.clientid
= clp
->cl_clientid
;
4559 status
= nfs4_set_lock_state(state
, request
);
4562 lsp
= request
->fl_u
.nfs4_fl
.owner
;
4563 arg
.lock_owner
.id
= lsp
->ls_seqid
.owner_id
;
4564 arg
.lock_owner
.s_dev
= server
->s_dev
;
4565 status
= nfs4_call_sync(server
->client
, server
, &msg
, &arg
.seq_args
, &res
.seq_res
, 1);
4568 request
->fl_type
= F_UNLCK
;
4570 case -NFS4ERR_DENIED
:
4573 request
->fl_ops
->fl_release_private(request
);
4574 request
->fl_ops
= NULL
;
4579 static int nfs4_proc_getlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
4581 struct nfs4_exception exception
= { };
4585 err
= nfs4_handle_exception(NFS_SERVER(state
->inode
),
4586 _nfs4_proc_getlk(state
, cmd
, request
),
4588 } while (exception
.retry
);
4592 static int do_vfs_lock(struct file
*file
, struct file_lock
*fl
)
4595 switch (fl
->fl_flags
& (FL_POSIX
|FL_FLOCK
)) {
4597 res
= posix_lock_file_wait(file
, fl
);
4600 res
= flock_lock_file_wait(file
, fl
);
4608 struct nfs4_unlockdata
{
4609 struct nfs_locku_args arg
;
4610 struct nfs_locku_res res
;
4611 struct nfs4_lock_state
*lsp
;
4612 struct nfs_open_context
*ctx
;
4613 struct file_lock fl
;
4614 const struct nfs_server
*server
;
4615 unsigned long timestamp
;
4618 static struct nfs4_unlockdata
*nfs4_alloc_unlockdata(struct file_lock
*fl
,
4619 struct nfs_open_context
*ctx
,
4620 struct nfs4_lock_state
*lsp
,
4621 struct nfs_seqid
*seqid
)
4623 struct nfs4_unlockdata
*p
;
4624 struct inode
*inode
= lsp
->ls_state
->inode
;
4626 p
= kzalloc(sizeof(*p
), GFP_NOFS
);
4629 p
->arg
.fh
= NFS_FH(inode
);
4631 p
->arg
.seqid
= seqid
;
4632 p
->res
.seqid
= seqid
;
4633 p
->arg
.stateid
= &lsp
->ls_stateid
;
4635 atomic_inc(&lsp
->ls_count
);
4636 /* Ensure we don't close file until we're done freeing locks! */
4637 p
->ctx
= get_nfs_open_context(ctx
);
4638 memcpy(&p
->fl
, fl
, sizeof(p
->fl
));
4639 p
->server
= NFS_SERVER(inode
);
4643 static void nfs4_locku_release_calldata(void *data
)
4645 struct nfs4_unlockdata
*calldata
= data
;
4646 nfs_free_seqid(calldata
->arg
.seqid
);
4647 nfs4_put_lock_state(calldata
->lsp
);
4648 put_nfs_open_context(calldata
->ctx
);
4652 static void nfs4_locku_done(struct rpc_task
*task
, void *data
)
4654 struct nfs4_unlockdata
*calldata
= data
;
4656 if (!nfs4_sequence_done(task
, &calldata
->res
.seq_res
))
4658 switch (task
->tk_status
) {
4660 nfs4_stateid_copy(&calldata
->lsp
->ls_stateid
,
4661 &calldata
->res
.stateid
);
4662 renew_lease(calldata
->server
, calldata
->timestamp
);
4664 case -NFS4ERR_BAD_STATEID
:
4665 case -NFS4ERR_OLD_STATEID
:
4666 case -NFS4ERR_STALE_STATEID
:
4667 case -NFS4ERR_EXPIRED
:
4670 if (nfs4_async_handle_error(task
, calldata
->server
, NULL
) == -EAGAIN
)
4671 rpc_restart_call_prepare(task
);
4673 nfs_release_seqid(calldata
->arg
.seqid
);
4676 static void nfs4_locku_prepare(struct rpc_task
*task
, void *data
)
4678 struct nfs4_unlockdata
*calldata
= data
;
4680 if (nfs_wait_on_sequence(calldata
->arg
.seqid
, task
) != 0)
4682 if (test_bit(NFS_LOCK_INITIALIZED
, &calldata
->lsp
->ls_flags
) == 0) {
4683 /* Note: exit _without_ running nfs4_locku_done */
4686 calldata
->timestamp
= jiffies
;
4687 if (nfs4_setup_sequence(calldata
->server
,
4688 &calldata
->arg
.seq_args
,
4689 &calldata
->res
.seq_res
,
4691 nfs_release_seqid(calldata
->arg
.seqid
);
4694 task
->tk_action
= NULL
;
4696 nfs4_sequence_done(task
, &calldata
->res
.seq_res
);
4699 static const struct rpc_call_ops nfs4_locku_ops
= {
4700 .rpc_call_prepare
= nfs4_locku_prepare
,
4701 .rpc_call_done
= nfs4_locku_done
,
4702 .rpc_release
= nfs4_locku_release_calldata
,
4705 static struct rpc_task
*nfs4_do_unlck(struct file_lock
*fl
,
4706 struct nfs_open_context
*ctx
,
4707 struct nfs4_lock_state
*lsp
,
4708 struct nfs_seqid
*seqid
)
4710 struct nfs4_unlockdata
*data
;
4711 struct rpc_message msg
= {
4712 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOCKU
],
4713 .rpc_cred
= ctx
->cred
,
4715 struct rpc_task_setup task_setup_data
= {
4716 .rpc_client
= NFS_CLIENT(lsp
->ls_state
->inode
),
4717 .rpc_message
= &msg
,
4718 .callback_ops
= &nfs4_locku_ops
,
4719 .workqueue
= nfsiod_workqueue
,
4720 .flags
= RPC_TASK_ASYNC
,
4723 /* Ensure this is an unlock - when canceling a lock, the
4724 * canceled lock is passed in, and it won't be an unlock.
4726 fl
->fl_type
= F_UNLCK
;
4728 data
= nfs4_alloc_unlockdata(fl
, ctx
, lsp
, seqid
);
4730 nfs_free_seqid(seqid
);
4731 return ERR_PTR(-ENOMEM
);
4734 nfs41_init_sequence(&data
->arg
.seq_args
, &data
->res
.seq_res
, 1);
4735 msg
.rpc_argp
= &data
->arg
;
4736 msg
.rpc_resp
= &data
->res
;
4737 task_setup_data
.callback_data
= data
;
4738 return rpc_run_task(&task_setup_data
);
4741 static int nfs4_proc_unlck(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
4743 struct inode
*inode
= state
->inode
;
4744 struct nfs4_state_owner
*sp
= state
->owner
;
4745 struct nfs_inode
*nfsi
= NFS_I(inode
);
4746 struct nfs_seqid
*seqid
;
4747 struct nfs4_lock_state
*lsp
;
4748 struct rpc_task
*task
;
4750 unsigned char fl_flags
= request
->fl_flags
;
4752 status
= nfs4_set_lock_state(state
, request
);
4753 /* Unlock _before_ we do the RPC call */
4754 request
->fl_flags
|= FL_EXISTS
;
4755 /* Exclude nfs_delegation_claim_locks() */
4756 mutex_lock(&sp
->so_delegreturn_mutex
);
4757 /* Exclude nfs4_reclaim_open_stateid() - note nesting! */
4758 down_read(&nfsi
->rwsem
);
4759 if (do_vfs_lock(request
->fl_file
, request
) == -ENOENT
) {
4760 up_read(&nfsi
->rwsem
);
4761 mutex_unlock(&sp
->so_delegreturn_mutex
);
4764 up_read(&nfsi
->rwsem
);
4765 mutex_unlock(&sp
->so_delegreturn_mutex
);
4768 /* Is this a delegated lock? */
4769 lsp
= request
->fl_u
.nfs4_fl
.owner
;
4770 if (test_bit(NFS_LOCK_INITIALIZED
, &lsp
->ls_flags
) == 0)
4772 seqid
= nfs_alloc_seqid(&lsp
->ls_seqid
, GFP_KERNEL
);
4776 task
= nfs4_do_unlck(request
, nfs_file_open_context(request
->fl_file
), lsp
, seqid
);
4777 status
= PTR_ERR(task
);
4780 status
= nfs4_wait_for_completion_rpc_task(task
);
4783 request
->fl_flags
= fl_flags
;
4787 struct nfs4_lockdata
{
4788 struct nfs_lock_args arg
;
4789 struct nfs_lock_res res
;
4790 struct nfs4_lock_state
*lsp
;
4791 struct nfs_open_context
*ctx
;
4792 struct file_lock fl
;
4793 unsigned long timestamp
;
4796 struct nfs_server
*server
;
4799 static struct nfs4_lockdata
*nfs4_alloc_lockdata(struct file_lock
*fl
,
4800 struct nfs_open_context
*ctx
, struct nfs4_lock_state
*lsp
,
4803 struct nfs4_lockdata
*p
;
4804 struct inode
*inode
= lsp
->ls_state
->inode
;
4805 struct nfs_server
*server
= NFS_SERVER(inode
);
4807 p
= kzalloc(sizeof(*p
), gfp_mask
);
4811 p
->arg
.fh
= NFS_FH(inode
);
4813 p
->arg
.open_seqid
= nfs_alloc_seqid(&lsp
->ls_state
->owner
->so_seqid
, gfp_mask
);
4814 if (p
->arg
.open_seqid
== NULL
)
4816 p
->arg
.lock_seqid
= nfs_alloc_seqid(&lsp
->ls_seqid
, gfp_mask
);
4817 if (p
->arg
.lock_seqid
== NULL
)
4818 goto out_free_seqid
;
4819 p
->arg
.lock_stateid
= &lsp
->ls_stateid
;
4820 p
->arg
.lock_owner
.clientid
= server
->nfs_client
->cl_clientid
;
4821 p
->arg
.lock_owner
.id
= lsp
->ls_seqid
.owner_id
;
4822 p
->arg
.lock_owner
.s_dev
= server
->s_dev
;
4823 p
->res
.lock_seqid
= p
->arg
.lock_seqid
;
4826 atomic_inc(&lsp
->ls_count
);
4827 p
->ctx
= get_nfs_open_context(ctx
);
4828 memcpy(&p
->fl
, fl
, sizeof(p
->fl
));
4831 nfs_free_seqid(p
->arg
.open_seqid
);
4837 static void nfs4_lock_prepare(struct rpc_task
*task
, void *calldata
)
4839 struct nfs4_lockdata
*data
= calldata
;
4840 struct nfs4_state
*state
= data
->lsp
->ls_state
;
4842 dprintk("%s: begin!\n", __func__
);
4843 if (nfs_wait_on_sequence(data
->arg
.lock_seqid
, task
) != 0)
4845 /* Do we need to do an open_to_lock_owner? */
4846 if (!(data
->arg
.lock_seqid
->sequence
->flags
& NFS_SEQID_CONFIRMED
)) {
4847 if (nfs_wait_on_sequence(data
->arg
.open_seqid
, task
) != 0) {
4848 goto out_release_lock_seqid
;
4850 data
->arg
.open_stateid
= &state
->open_stateid
;
4851 data
->arg
.new_lock_owner
= 1;
4852 data
->res
.open_seqid
= data
->arg
.open_seqid
;
4854 data
->arg
.new_lock_owner
= 0;
4855 if (!nfs4_valid_open_stateid(state
)) {
4856 data
->rpc_status
= -EBADF
;
4857 task
->tk_action
= NULL
;
4858 goto out_release_open_seqid
;
4860 data
->timestamp
= jiffies
;
4861 if (nfs4_setup_sequence(data
->server
,
4862 &data
->arg
.seq_args
,
4866 out_release_open_seqid
:
4867 nfs_release_seqid(data
->arg
.open_seqid
);
4868 out_release_lock_seqid
:
4869 nfs_release_seqid(data
->arg
.lock_seqid
);
4871 nfs4_sequence_done(task
, &data
->res
.seq_res
);
4872 dprintk("%s: done!, ret = %d\n", __func__
, data
->rpc_status
);
4875 static void nfs4_lock_done(struct rpc_task
*task
, void *calldata
)
4877 struct nfs4_lockdata
*data
= calldata
;
4879 dprintk("%s: begin!\n", __func__
);
4881 if (!nfs4_sequence_done(task
, &data
->res
.seq_res
))
4884 data
->rpc_status
= task
->tk_status
;
4885 if (data
->arg
.new_lock_owner
!= 0) {
4886 if (data
->rpc_status
== 0)
4887 nfs_confirm_seqid(&data
->lsp
->ls_seqid
, 0);
4891 if (data
->rpc_status
== 0) {
4892 nfs4_stateid_copy(&data
->lsp
->ls_stateid
, &data
->res
.stateid
);
4893 set_bit(NFS_LOCK_INITIALIZED
, &data
->lsp
->ls_flags
);
4894 renew_lease(NFS_SERVER(data
->ctx
->dentry
->d_inode
), data
->timestamp
);
4897 dprintk("%s: done, ret = %d!\n", __func__
, data
->rpc_status
);
4900 static void nfs4_lock_release(void *calldata
)
4902 struct nfs4_lockdata
*data
= calldata
;
4904 dprintk("%s: begin!\n", __func__
);
4905 nfs_free_seqid(data
->arg
.open_seqid
);
4906 if (data
->cancelled
!= 0) {
4907 struct rpc_task
*task
;
4908 task
= nfs4_do_unlck(&data
->fl
, data
->ctx
, data
->lsp
,
4909 data
->arg
.lock_seqid
);
4911 rpc_put_task_async(task
);
4912 dprintk("%s: cancelling lock!\n", __func__
);
4914 nfs_free_seqid(data
->arg
.lock_seqid
);
4915 nfs4_put_lock_state(data
->lsp
);
4916 put_nfs_open_context(data
->ctx
);
4918 dprintk("%s: done!\n", __func__
);
4921 static const struct rpc_call_ops nfs4_lock_ops
= {
4922 .rpc_call_prepare
= nfs4_lock_prepare
,
4923 .rpc_call_done
= nfs4_lock_done
,
4924 .rpc_release
= nfs4_lock_release
,
4927 static void nfs4_handle_setlk_error(struct nfs_server
*server
, struct nfs4_lock_state
*lsp
, int new_lock_owner
, int error
)
4930 case -NFS4ERR_ADMIN_REVOKED
:
4931 case -NFS4ERR_BAD_STATEID
:
4932 lsp
->ls_seqid
.flags
&= ~NFS_SEQID_CONFIRMED
;
4933 if (new_lock_owner
!= 0 ||
4934 test_bit(NFS_LOCK_INITIALIZED
, &lsp
->ls_flags
) != 0)
4935 nfs4_schedule_stateid_recovery(server
, lsp
->ls_state
);
4937 case -NFS4ERR_STALE_STATEID
:
4938 lsp
->ls_seqid
.flags
&= ~NFS_SEQID_CONFIRMED
;
4939 case -NFS4ERR_EXPIRED
:
4940 nfs4_schedule_lease_recovery(server
->nfs_client
);
4944 static int _nfs4_do_setlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*fl
, int recovery_type
)
4946 struct nfs4_lockdata
*data
;
4947 struct rpc_task
*task
;
4948 struct rpc_message msg
= {
4949 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOCK
],
4950 .rpc_cred
= state
->owner
->so_cred
,
4952 struct rpc_task_setup task_setup_data
= {
4953 .rpc_client
= NFS_CLIENT(state
->inode
),
4954 .rpc_message
= &msg
,
4955 .callback_ops
= &nfs4_lock_ops
,
4956 .workqueue
= nfsiod_workqueue
,
4957 .flags
= RPC_TASK_ASYNC
,
4961 dprintk("%s: begin!\n", __func__
);
4962 data
= nfs4_alloc_lockdata(fl
, nfs_file_open_context(fl
->fl_file
),
4963 fl
->fl_u
.nfs4_fl
.owner
,
4964 recovery_type
== NFS_LOCK_NEW
? GFP_KERNEL
: GFP_NOFS
);
4968 data
->arg
.block
= 1;
4969 nfs41_init_sequence(&data
->arg
.seq_args
, &data
->res
.seq_res
, 1);
4970 msg
.rpc_argp
= &data
->arg
;
4971 msg
.rpc_resp
= &data
->res
;
4972 task_setup_data
.callback_data
= data
;
4973 if (recovery_type
> NFS_LOCK_NEW
) {
4974 if (recovery_type
== NFS_LOCK_RECLAIM
)
4975 data
->arg
.reclaim
= NFS_LOCK_RECLAIM
;
4976 nfs4_set_sequence_privileged(&data
->arg
.seq_args
);
4978 task
= rpc_run_task(&task_setup_data
);
4980 return PTR_ERR(task
);
4981 ret
= nfs4_wait_for_completion_rpc_task(task
);
4983 ret
= data
->rpc_status
;
4985 nfs4_handle_setlk_error(data
->server
, data
->lsp
,
4986 data
->arg
.new_lock_owner
, ret
);
4988 data
->cancelled
= 1;
4990 dprintk("%s: done, ret = %d!\n", __func__
, ret
);
4994 static int nfs4_lock_reclaim(struct nfs4_state
*state
, struct file_lock
*request
)
4996 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
4997 struct nfs4_exception exception
= {
4998 .inode
= state
->inode
,
5003 /* Cache the lock if possible... */
5004 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) != 0)
5006 err
= _nfs4_do_setlk(state
, F_SETLK
, request
, NFS_LOCK_RECLAIM
);
5007 if (err
!= -NFS4ERR_DELAY
)
5009 nfs4_handle_exception(server
, err
, &exception
);
5010 } while (exception
.retry
);
5014 static int nfs4_lock_expired(struct nfs4_state
*state
, struct file_lock
*request
)
5016 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
5017 struct nfs4_exception exception
= {
5018 .inode
= state
->inode
,
5022 err
= nfs4_set_lock_state(state
, request
);
5026 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) != 0)
5028 err
= _nfs4_do_setlk(state
, F_SETLK
, request
, NFS_LOCK_EXPIRED
);
5032 case -NFS4ERR_GRACE
:
5033 case -NFS4ERR_DELAY
:
5034 nfs4_handle_exception(server
, err
, &exception
);
5037 } while (exception
.retry
);
5042 #if defined(CONFIG_NFS_V4_1)
5044 * nfs41_check_expired_locks - possibly free a lock stateid
5046 * @state: NFSv4 state for an inode
5048 * Returns NFS_OK if recovery for this stateid is now finished.
5049 * Otherwise a negative NFS4ERR value is returned.
5051 static int nfs41_check_expired_locks(struct nfs4_state
*state
)
5053 int status
, ret
= -NFS4ERR_BAD_STATEID
;
5054 struct nfs4_lock_state
*lsp
;
5055 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
5057 list_for_each_entry(lsp
, &state
->lock_states
, ls_locks
) {
5058 if (test_bit(NFS_LOCK_INITIALIZED
, &lsp
->ls_flags
)) {
5059 status
= nfs41_test_stateid(server
, &lsp
->ls_stateid
);
5060 if (status
!= NFS_OK
) {
5061 /* Free the stateid unless the server
5062 * informs us the stateid is unrecognized. */
5063 if (status
!= -NFS4ERR_BAD_STATEID
)
5064 nfs41_free_stateid(server
,
5066 clear_bit(NFS_LOCK_INITIALIZED
, &lsp
->ls_flags
);
5075 static int nfs41_lock_expired(struct nfs4_state
*state
, struct file_lock
*request
)
5077 int status
= NFS_OK
;
5079 if (test_bit(LK_STATE_IN_USE
, &state
->flags
))
5080 status
= nfs41_check_expired_locks(state
);
5081 if (status
!= NFS_OK
)
5082 status
= nfs4_lock_expired(state
, request
);
5087 static int _nfs4_proc_setlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
5089 struct nfs4_state_owner
*sp
= state
->owner
;
5090 struct nfs_inode
*nfsi
= NFS_I(state
->inode
);
5091 unsigned char fl_flags
= request
->fl_flags
;
5093 int status
= -ENOLCK
;
5095 if ((fl_flags
& FL_POSIX
) &&
5096 !test_bit(NFS_STATE_POSIX_LOCKS
, &state
->flags
))
5098 /* Is this a delegated open? */
5099 status
= nfs4_set_lock_state(state
, request
);
5102 request
->fl_flags
|= FL_ACCESS
;
5103 status
= do_vfs_lock(request
->fl_file
, request
);
5106 down_read(&nfsi
->rwsem
);
5107 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
)) {
5108 /* Yes: cache locks! */
5109 /* ...but avoid races with delegation recall... */
5110 request
->fl_flags
= fl_flags
& ~FL_SLEEP
;
5111 status
= do_vfs_lock(request
->fl_file
, request
);
5114 seq
= raw_seqcount_begin(&sp
->so_reclaim_seqcount
);
5115 up_read(&nfsi
->rwsem
);
5116 status
= _nfs4_do_setlk(state
, cmd
, request
, NFS_LOCK_NEW
);
5119 down_read(&nfsi
->rwsem
);
5120 if (read_seqcount_retry(&sp
->so_reclaim_seqcount
, seq
)) {
5121 status
= -NFS4ERR_DELAY
;
5124 /* Note: we always want to sleep here! */
5125 request
->fl_flags
= fl_flags
| FL_SLEEP
;
5126 if (do_vfs_lock(request
->fl_file
, request
) < 0)
5127 printk(KERN_WARNING
"NFS: %s: VFS is out of sync with lock "
5128 "manager!\n", __func__
);
5130 up_read(&nfsi
->rwsem
);
5132 request
->fl_flags
= fl_flags
;
5136 static int nfs4_proc_setlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
5138 struct nfs4_exception exception
= {
5140 .inode
= state
->inode
,
5145 err
= _nfs4_proc_setlk(state
, cmd
, request
);
5146 if (err
== -NFS4ERR_DENIED
)
5148 err
= nfs4_handle_exception(NFS_SERVER(state
->inode
),
5150 } while (exception
.retry
);
5155 nfs4_proc_lock(struct file
*filp
, int cmd
, struct file_lock
*request
)
5157 struct nfs_open_context
*ctx
;
5158 struct nfs4_state
*state
;
5159 unsigned long timeout
= NFS4_LOCK_MINTIMEOUT
;
5162 /* verify open state */
5163 ctx
= nfs_file_open_context(filp
);
5166 if (request
->fl_start
< 0 || request
->fl_end
< 0)
5169 if (IS_GETLK(cmd
)) {
5171 return nfs4_proc_getlk(state
, F_GETLK
, request
);
5175 if (!(IS_SETLK(cmd
) || IS_SETLKW(cmd
)))
5178 if (request
->fl_type
== F_UNLCK
) {
5180 return nfs4_proc_unlck(state
, cmd
, request
);
5187 * Don't rely on the VFS having checked the file open mode,
5188 * since it won't do this for flock() locks.
5190 switch (request
->fl_type
) {
5192 if (!(filp
->f_mode
& FMODE_READ
))
5196 if (!(filp
->f_mode
& FMODE_WRITE
))
5201 status
= nfs4_proc_setlk(state
, cmd
, request
);
5202 if ((status
!= -EAGAIN
) || IS_SETLK(cmd
))
5204 timeout
= nfs4_set_lock_task_retry(timeout
);
5205 status
= -ERESTARTSYS
;
5208 } while(status
< 0);
5212 int nfs4_lock_delegation_recall(struct file_lock
*fl
, struct nfs4_state
*state
, const nfs4_stateid
*stateid
)
5214 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
5217 err
= nfs4_set_lock_state(state
, fl
);
5220 err
= _nfs4_do_setlk(state
, F_SETLK
, fl
, NFS_LOCK_NEW
);
5221 return nfs4_handle_delegation_recall_error(server
, state
, stateid
, err
);
5224 struct nfs_release_lockowner_data
{
5225 struct nfs4_lock_state
*lsp
;
5226 struct nfs_server
*server
;
5227 struct nfs_release_lockowner_args args
;
5230 static void nfs4_release_lockowner_release(void *calldata
)
5232 struct nfs_release_lockowner_data
*data
= calldata
;
5233 nfs4_free_lock_state(data
->server
, data
->lsp
);
5237 static const struct rpc_call_ops nfs4_release_lockowner_ops
= {
5238 .rpc_release
= nfs4_release_lockowner_release
,
5241 static int nfs4_release_lockowner(struct nfs_server
*server
, struct nfs4_lock_state
*lsp
)
5243 struct nfs_release_lockowner_data
*data
;
5244 struct rpc_message msg
= {
5245 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RELEASE_LOCKOWNER
],
5248 if (server
->nfs_client
->cl_mvops
->minor_version
!= 0)
5250 data
= kmalloc(sizeof(*data
), GFP_NOFS
);
5254 data
->server
= server
;
5255 data
->args
.lock_owner
.clientid
= server
->nfs_client
->cl_clientid
;
5256 data
->args
.lock_owner
.id
= lsp
->ls_seqid
.owner_id
;
5257 data
->args
.lock_owner
.s_dev
= server
->s_dev
;
5258 msg
.rpc_argp
= &data
->args
;
5259 rpc_call_async(server
->client
, &msg
, 0, &nfs4_release_lockowner_ops
, data
);
5263 #define XATTR_NAME_NFSV4_ACL "system.nfs4_acl"
5265 static int nfs4_xattr_set_nfs4_acl(struct dentry
*dentry
, const char *key
,
5266 const void *buf
, size_t buflen
,
5267 int flags
, int type
)
5269 if (strcmp(key
, "") != 0)
5272 return nfs4_proc_set_acl(dentry
->d_inode
, buf
, buflen
);
5275 static int nfs4_xattr_get_nfs4_acl(struct dentry
*dentry
, const char *key
,
5276 void *buf
, size_t buflen
, int type
)
5278 if (strcmp(key
, "") != 0)
5281 return nfs4_proc_get_acl(dentry
->d_inode
, buf
, buflen
);
5284 static size_t nfs4_xattr_list_nfs4_acl(struct dentry
*dentry
, char *list
,
5285 size_t list_len
, const char *name
,
5286 size_t name_len
, int type
)
5288 size_t len
= sizeof(XATTR_NAME_NFSV4_ACL
);
5290 if (!nfs4_server_supports_acls(NFS_SERVER(dentry
->d_inode
)))
5293 if (list
&& len
<= list_len
)
5294 memcpy(list
, XATTR_NAME_NFSV4_ACL
, len
);
5299 * nfs_fhget will use either the mounted_on_fileid or the fileid
5301 static void nfs_fixup_referral_attributes(struct nfs_fattr
*fattr
)
5303 if (!(((fattr
->valid
& NFS_ATTR_FATTR_MOUNTED_ON_FILEID
) ||
5304 (fattr
->valid
& NFS_ATTR_FATTR_FILEID
)) &&
5305 (fattr
->valid
& NFS_ATTR_FATTR_FSID
) &&
5306 (fattr
->valid
& NFS_ATTR_FATTR_V4_LOCATIONS
)))
5309 fattr
->valid
|= NFS_ATTR_FATTR_TYPE
| NFS_ATTR_FATTR_MODE
|
5310 NFS_ATTR_FATTR_NLINK
| NFS_ATTR_FATTR_V4_REFERRAL
;
5311 fattr
->mode
= S_IFDIR
| S_IRUGO
| S_IXUGO
;
5315 static int _nfs4_proc_fs_locations(struct rpc_clnt
*client
, struct inode
*dir
,
5316 const struct qstr
*name
,
5317 struct nfs4_fs_locations
*fs_locations
,
5320 struct nfs_server
*server
= NFS_SERVER(dir
);
5322 [0] = FATTR4_WORD0_FSID
| FATTR4_WORD0_FS_LOCATIONS
,
5324 struct nfs4_fs_locations_arg args
= {
5325 .dir_fh
= NFS_FH(dir
),
5330 struct nfs4_fs_locations_res res
= {
5331 .fs_locations
= fs_locations
,
5333 struct rpc_message msg
= {
5334 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_FS_LOCATIONS
],
5340 dprintk("%s: start\n", __func__
);
5342 /* Ask for the fileid of the absent filesystem if mounted_on_fileid
5343 * is not supported */
5344 if (NFS_SERVER(dir
)->attr_bitmask
[1] & FATTR4_WORD1_MOUNTED_ON_FILEID
)
5345 bitmask
[1] |= FATTR4_WORD1_MOUNTED_ON_FILEID
;
5347 bitmask
[0] |= FATTR4_WORD0_FILEID
;
5349 nfs_fattr_init(&fs_locations
->fattr
);
5350 fs_locations
->server
= server
;
5351 fs_locations
->nlocations
= 0;
5352 status
= nfs4_call_sync(client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
5353 dprintk("%s: returned status = %d\n", __func__
, status
);
5357 int nfs4_proc_fs_locations(struct rpc_clnt
*client
, struct inode
*dir
,
5358 const struct qstr
*name
,
5359 struct nfs4_fs_locations
*fs_locations
,
5362 struct nfs4_exception exception
= { };
5365 err
= nfs4_handle_exception(NFS_SERVER(dir
),
5366 _nfs4_proc_fs_locations(client
, dir
, name
, fs_locations
, page
),
5368 } while (exception
.retry
);
5372 static int _nfs4_proc_secinfo(struct inode
*dir
, const struct qstr
*name
, struct nfs4_secinfo_flavors
*flavors
)
5375 struct nfs4_secinfo_arg args
= {
5376 .dir_fh
= NFS_FH(dir
),
5379 struct nfs4_secinfo_res res
= {
5382 struct rpc_message msg
= {
5383 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SECINFO
],
5388 dprintk("NFS call secinfo %s\n", name
->name
);
5389 status
= nfs4_call_sync(NFS_SERVER(dir
)->client
, NFS_SERVER(dir
), &msg
, &args
.seq_args
, &res
.seq_res
, 0);
5390 dprintk("NFS reply secinfo: %d\n", status
);
5394 int nfs4_proc_secinfo(struct inode
*dir
, const struct qstr
*name
,
5395 struct nfs4_secinfo_flavors
*flavors
)
5397 struct nfs4_exception exception
= { };
5400 err
= nfs4_handle_exception(NFS_SERVER(dir
),
5401 _nfs4_proc_secinfo(dir
, name
, flavors
),
5403 } while (exception
.retry
);
5407 #ifdef CONFIG_NFS_V4_1
5409 * Check the exchange flags returned by the server for invalid flags, having
5410 * both PNFS and NON_PNFS flags set, and not having one of NON_PNFS, PNFS, or
5413 static int nfs4_check_cl_exchange_flags(u32 flags
)
5415 if (flags
& ~EXCHGID4_FLAG_MASK_R
)
5417 if ((flags
& EXCHGID4_FLAG_USE_PNFS_MDS
) &&
5418 (flags
& EXCHGID4_FLAG_USE_NON_PNFS
))
5420 if (!(flags
& (EXCHGID4_FLAG_MASK_PNFS
)))
5424 return -NFS4ERR_INVAL
;
5428 nfs41_same_server_scope(struct nfs41_server_scope
*a
,
5429 struct nfs41_server_scope
*b
)
5431 if (a
->server_scope_sz
== b
->server_scope_sz
&&
5432 memcmp(a
->server_scope
, b
->server_scope
, a
->server_scope_sz
) == 0)
5439 * nfs4_proc_bind_conn_to_session()
5441 * The 4.1 client currently uses the same TCP connection for the
5442 * fore and backchannel.
5444 int nfs4_proc_bind_conn_to_session(struct nfs_client
*clp
, struct rpc_cred
*cred
)
5447 struct nfs41_bind_conn_to_session_res res
;
5448 struct rpc_message msg
= {
5450 &nfs4_procedures
[NFSPROC4_CLNT_BIND_CONN_TO_SESSION
],
5456 dprintk("--> %s\n", __func__
);
5458 res
.session
= kzalloc(sizeof(struct nfs4_session
), GFP_NOFS
);
5459 if (unlikely(res
.session
== NULL
)) {
5464 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
5466 if (memcmp(res
.session
->sess_id
.data
,
5467 clp
->cl_session
->sess_id
.data
, NFS4_MAX_SESSIONID_LEN
)) {
5468 dprintk("NFS: %s: Session ID mismatch\n", __func__
);
5472 if (res
.dir
!= NFS4_CDFS4_BOTH
) {
5473 dprintk("NFS: %s: Unexpected direction from server\n",
5478 if (res
.use_conn_in_rdma_mode
) {
5479 dprintk("NFS: %s: Server returned RDMA mode = true\n",
5488 dprintk("<-- %s status= %d\n", __func__
, status
);
5493 * nfs4_proc_exchange_id()
5495 * Returns zero, a negative errno, or a negative NFS4ERR status code.
5497 * Since the clientid has expired, all compounds using sessions
5498 * associated with the stale clientid will be returning
5499 * NFS4ERR_BADSESSION in the sequence operation, and will therefore
5500 * be in some phase of session reset.
5502 int nfs4_proc_exchange_id(struct nfs_client
*clp
, struct rpc_cred
*cred
)
5504 nfs4_verifier verifier
;
5505 struct nfs41_exchange_id_args args
= {
5506 .verifier
= &verifier
,
5508 .flags
= EXCHGID4_FLAG_SUPP_MOVED_REFER
,
5510 struct nfs41_exchange_id_res res
= {
5514 struct rpc_message msg
= {
5515 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_EXCHANGE_ID
],
5521 nfs4_init_boot_verifier(clp
, &verifier
);
5522 args
.id_len
= nfs4_init_uniform_client_string(clp
, args
.id
,
5524 dprintk("NFS call exchange_id auth=%s, '%.*s'\n",
5525 clp
->cl_rpcclient
->cl_auth
->au_ops
->au_name
,
5526 args
.id_len
, args
.id
);
5528 res
.server_owner
= kzalloc(sizeof(struct nfs41_server_owner
),
5530 if (unlikely(res
.server_owner
== NULL
)) {
5535 res
.server_scope
= kzalloc(sizeof(struct nfs41_server_scope
),
5537 if (unlikely(res
.server_scope
== NULL
)) {
5539 goto out_server_owner
;
5542 res
.impl_id
= kzalloc(sizeof(struct nfs41_impl_id
), GFP_NOFS
);
5543 if (unlikely(res
.impl_id
== NULL
)) {
5545 goto out_server_scope
;
5548 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
5550 status
= nfs4_check_cl_exchange_flags(res
.flags
);
5553 clp
->cl_clientid
= res
.clientid
;
5554 clp
->cl_exchange_flags
= (res
.flags
& ~EXCHGID4_FLAG_CONFIRMED_R
);
5555 if (!(res
.flags
& EXCHGID4_FLAG_CONFIRMED_R
))
5556 clp
->cl_seqid
= res
.seqid
;
5558 kfree(clp
->cl_serverowner
);
5559 clp
->cl_serverowner
= res
.server_owner
;
5560 res
.server_owner
= NULL
;
5562 /* use the most recent implementation id */
5563 kfree(clp
->cl_implid
);
5564 clp
->cl_implid
= res
.impl_id
;
5566 if (clp
->cl_serverscope
!= NULL
&&
5567 !nfs41_same_server_scope(clp
->cl_serverscope
,
5568 res
.server_scope
)) {
5569 dprintk("%s: server_scope mismatch detected\n",
5571 set_bit(NFS4CLNT_SERVER_SCOPE_MISMATCH
, &clp
->cl_state
);
5572 kfree(clp
->cl_serverscope
);
5573 clp
->cl_serverscope
= NULL
;
5576 if (clp
->cl_serverscope
== NULL
) {
5577 clp
->cl_serverscope
= res
.server_scope
;
5584 kfree(res
.server_owner
);
5586 kfree(res
.server_scope
);
5588 if (clp
->cl_implid
!= NULL
)
5589 dprintk("NFS reply exchange_id: Server Implementation ID: "
5590 "domain: %s, name: %s, date: %llu,%u\n",
5591 clp
->cl_implid
->domain
, clp
->cl_implid
->name
,
5592 clp
->cl_implid
->date
.seconds
,
5593 clp
->cl_implid
->date
.nseconds
);
5594 dprintk("NFS reply exchange_id: %d\n", status
);
5598 static int _nfs4_proc_destroy_clientid(struct nfs_client
*clp
,
5599 struct rpc_cred
*cred
)
5601 struct rpc_message msg
= {
5602 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_DESTROY_CLIENTID
],
5608 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
5610 dprintk("NFS: Got error %d from the server %s on "
5611 "DESTROY_CLIENTID.", status
, clp
->cl_hostname
);
5615 static int nfs4_proc_destroy_clientid(struct nfs_client
*clp
,
5616 struct rpc_cred
*cred
)
5621 for (loop
= NFS4_MAX_LOOP_ON_RECOVER
; loop
!= 0; loop
--) {
5622 ret
= _nfs4_proc_destroy_clientid(clp
, cred
);
5624 case -NFS4ERR_DELAY
:
5625 case -NFS4ERR_CLIENTID_BUSY
:
5635 int nfs4_destroy_clientid(struct nfs_client
*clp
)
5637 struct rpc_cred
*cred
;
5640 if (clp
->cl_mvops
->minor_version
< 1)
5642 if (clp
->cl_exchange_flags
== 0)
5644 if (clp
->cl_preserve_clid
)
5646 cred
= nfs4_get_exchange_id_cred(clp
);
5647 ret
= nfs4_proc_destroy_clientid(clp
, cred
);
5652 case -NFS4ERR_STALE_CLIENTID
:
5653 clp
->cl_exchange_flags
= 0;
5659 struct nfs4_get_lease_time_data
{
5660 struct nfs4_get_lease_time_args
*args
;
5661 struct nfs4_get_lease_time_res
*res
;
5662 struct nfs_client
*clp
;
5665 static void nfs4_get_lease_time_prepare(struct rpc_task
*task
,
5668 struct nfs4_get_lease_time_data
*data
=
5669 (struct nfs4_get_lease_time_data
*)calldata
;
5671 dprintk("--> %s\n", __func__
);
5672 /* just setup sequence, do not trigger session recovery
5673 since we're invoked within one */
5674 nfs41_setup_sequence(data
->clp
->cl_session
,
5675 &data
->args
->la_seq_args
,
5676 &data
->res
->lr_seq_res
,
5678 dprintk("<-- %s\n", __func__
);
5682 * Called from nfs4_state_manager thread for session setup, so don't recover
5683 * from sequence operation or clientid errors.
5685 static void nfs4_get_lease_time_done(struct rpc_task
*task
, void *calldata
)
5687 struct nfs4_get_lease_time_data
*data
=
5688 (struct nfs4_get_lease_time_data
*)calldata
;
5690 dprintk("--> %s\n", __func__
);
5691 if (!nfs41_sequence_done(task
, &data
->res
->lr_seq_res
))
5693 switch (task
->tk_status
) {
5694 case -NFS4ERR_DELAY
:
5695 case -NFS4ERR_GRACE
:
5696 dprintk("%s Retry: tk_status %d\n", __func__
, task
->tk_status
);
5697 rpc_delay(task
, NFS4_POLL_RETRY_MIN
);
5698 task
->tk_status
= 0;
5700 case -NFS4ERR_RETRY_UNCACHED_REP
:
5701 rpc_restart_call_prepare(task
);
5704 dprintk("<-- %s\n", __func__
);
5707 static const struct rpc_call_ops nfs4_get_lease_time_ops
= {
5708 .rpc_call_prepare
= nfs4_get_lease_time_prepare
,
5709 .rpc_call_done
= nfs4_get_lease_time_done
,
5712 int nfs4_proc_get_lease_time(struct nfs_client
*clp
, struct nfs_fsinfo
*fsinfo
)
5714 struct rpc_task
*task
;
5715 struct nfs4_get_lease_time_args args
;
5716 struct nfs4_get_lease_time_res res
= {
5717 .lr_fsinfo
= fsinfo
,
5719 struct nfs4_get_lease_time_data data
= {
5724 struct rpc_message msg
= {
5725 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GET_LEASE_TIME
],
5729 struct rpc_task_setup task_setup
= {
5730 .rpc_client
= clp
->cl_rpcclient
,
5731 .rpc_message
= &msg
,
5732 .callback_ops
= &nfs4_get_lease_time_ops
,
5733 .callback_data
= &data
,
5734 .flags
= RPC_TASK_TIMEOUT
,
5738 nfs41_init_sequence(&args
.la_seq_args
, &res
.lr_seq_res
, 0);
5739 nfs4_set_sequence_privileged(&args
.la_seq_args
);
5740 dprintk("--> %s\n", __func__
);
5741 task
= rpc_run_task(&task_setup
);
5744 status
= PTR_ERR(task
);
5746 status
= task
->tk_status
;
5749 dprintk("<-- %s return %d\n", __func__
, status
);
5755 * Initialize the values to be used by the client in CREATE_SESSION
5756 * If nfs4_init_session set the fore channel request and response sizes,
5759 * Set the back channel max_resp_sz_cached to zero to force the client to
5760 * always set csa_cachethis to FALSE because the current implementation
5761 * of the back channel DRC only supports caching the CB_SEQUENCE operation.
5763 static void nfs4_init_channel_attrs(struct nfs41_create_session_args
*args
)
5765 struct nfs4_session
*session
= args
->client
->cl_session
;
5766 unsigned int mxrqst_sz
= session
->fc_target_max_rqst_sz
,
5767 mxresp_sz
= session
->fc_target_max_resp_sz
;
5770 mxrqst_sz
= NFS_MAX_FILE_IO_SIZE
;
5772 mxresp_sz
= NFS_MAX_FILE_IO_SIZE
;
5773 /* Fore channel attributes */
5774 args
->fc_attrs
.max_rqst_sz
= mxrqst_sz
;
5775 args
->fc_attrs
.max_resp_sz
= mxresp_sz
;
5776 args
->fc_attrs
.max_ops
= NFS4_MAX_OPS
;
5777 args
->fc_attrs
.max_reqs
= max_session_slots
;
5779 dprintk("%s: Fore Channel : max_rqst_sz=%u max_resp_sz=%u "
5780 "max_ops=%u max_reqs=%u\n",
5782 args
->fc_attrs
.max_rqst_sz
, args
->fc_attrs
.max_resp_sz
,
5783 args
->fc_attrs
.max_ops
, args
->fc_attrs
.max_reqs
);
5785 /* Back channel attributes */
5786 args
->bc_attrs
.max_rqst_sz
= PAGE_SIZE
;
5787 args
->bc_attrs
.max_resp_sz
= PAGE_SIZE
;
5788 args
->bc_attrs
.max_resp_sz_cached
= 0;
5789 args
->bc_attrs
.max_ops
= NFS4_MAX_BACK_CHANNEL_OPS
;
5790 args
->bc_attrs
.max_reqs
= 1;
5792 dprintk("%s: Back Channel : max_rqst_sz=%u max_resp_sz=%u "
5793 "max_resp_sz_cached=%u max_ops=%u max_reqs=%u\n",
5795 args
->bc_attrs
.max_rqst_sz
, args
->bc_attrs
.max_resp_sz
,
5796 args
->bc_attrs
.max_resp_sz_cached
, args
->bc_attrs
.max_ops
,
5797 args
->bc_attrs
.max_reqs
);
5800 static int nfs4_verify_fore_channel_attrs(struct nfs41_create_session_args
*args
, struct nfs4_session
*session
)
5802 struct nfs4_channel_attrs
*sent
= &args
->fc_attrs
;
5803 struct nfs4_channel_attrs
*rcvd
= &session
->fc_attrs
;
5805 if (rcvd
->max_resp_sz
> sent
->max_resp_sz
)
5808 * Our requested max_ops is the minimum we need; we're not
5809 * prepared to break up compounds into smaller pieces than that.
5810 * So, no point even trying to continue if the server won't
5813 if (rcvd
->max_ops
< sent
->max_ops
)
5815 if (rcvd
->max_reqs
== 0)
5817 if (rcvd
->max_reqs
> NFS4_MAX_SLOT_TABLE
)
5818 rcvd
->max_reqs
= NFS4_MAX_SLOT_TABLE
;
5822 static int nfs4_verify_back_channel_attrs(struct nfs41_create_session_args
*args
, struct nfs4_session
*session
)
5824 struct nfs4_channel_attrs
*sent
= &args
->bc_attrs
;
5825 struct nfs4_channel_attrs
*rcvd
= &session
->bc_attrs
;
5827 if (rcvd
->max_rqst_sz
> sent
->max_rqst_sz
)
5829 if (rcvd
->max_resp_sz
< sent
->max_resp_sz
)
5831 if (rcvd
->max_resp_sz_cached
> sent
->max_resp_sz_cached
)
5833 /* These would render the backchannel useless: */
5834 if (rcvd
->max_ops
!= sent
->max_ops
)
5836 if (rcvd
->max_reqs
!= sent
->max_reqs
)
5841 static int nfs4_verify_channel_attrs(struct nfs41_create_session_args
*args
,
5842 struct nfs4_session
*session
)
5846 ret
= nfs4_verify_fore_channel_attrs(args
, session
);
5849 return nfs4_verify_back_channel_attrs(args
, session
);
5852 static int _nfs4_proc_create_session(struct nfs_client
*clp
,
5853 struct rpc_cred
*cred
)
5855 struct nfs4_session
*session
= clp
->cl_session
;
5856 struct nfs41_create_session_args args
= {
5858 .cb_program
= NFS4_CALLBACK
,
5860 struct nfs41_create_session_res res
= {
5863 struct rpc_message msg
= {
5864 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_CREATE_SESSION
],
5871 nfs4_init_channel_attrs(&args
);
5872 args
.flags
= (SESSION4_PERSIST
| SESSION4_BACK_CHAN
);
5874 status
= rpc_call_sync(session
->clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
5877 /* Verify the session's negotiated channel_attrs values */
5878 status
= nfs4_verify_channel_attrs(&args
, session
);
5879 /* Increment the clientid slot sequence id */
5887 * Issues a CREATE_SESSION operation to the server.
5888 * It is the responsibility of the caller to verify the session is
5889 * expired before calling this routine.
5891 int nfs4_proc_create_session(struct nfs_client
*clp
, struct rpc_cred
*cred
)
5895 struct nfs4_session
*session
= clp
->cl_session
;
5897 dprintk("--> %s clp=%p session=%p\n", __func__
, clp
, session
);
5899 status
= _nfs4_proc_create_session(clp
, cred
);
5903 /* Init or reset the session slot tables */
5904 status
= nfs4_setup_session_slot_tables(session
);
5905 dprintk("slot table setup returned %d\n", status
);
5909 ptr
= (unsigned *)&session
->sess_id
.data
[0];
5910 dprintk("%s client>seqid %d sessionid %u:%u:%u:%u\n", __func__
,
5911 clp
->cl_seqid
, ptr
[0], ptr
[1], ptr
[2], ptr
[3]);
5913 dprintk("<-- %s\n", __func__
);
5918 * Issue the over-the-wire RPC DESTROY_SESSION.
5919 * The caller must serialize access to this routine.
5921 int nfs4_proc_destroy_session(struct nfs4_session
*session
,
5922 struct rpc_cred
*cred
)
5924 struct rpc_message msg
= {
5925 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_DESTROY_SESSION
],
5926 .rpc_argp
= session
,
5931 dprintk("--> nfs4_proc_destroy_session\n");
5933 /* session is still being setup */
5934 if (session
->clp
->cl_cons_state
!= NFS_CS_READY
)
5937 status
= rpc_call_sync(session
->clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
5940 dprintk("NFS: Got error %d from the server on DESTROY_SESSION. "
5941 "Session has been destroyed regardless...\n", status
);
5943 dprintk("<-- nfs4_proc_destroy_session\n");
5948 * Renew the cl_session lease.
5950 struct nfs4_sequence_data
{
5951 struct nfs_client
*clp
;
5952 struct nfs4_sequence_args args
;
5953 struct nfs4_sequence_res res
;
5956 static void nfs41_sequence_release(void *data
)
5958 struct nfs4_sequence_data
*calldata
= data
;
5959 struct nfs_client
*clp
= calldata
->clp
;
5961 if (atomic_read(&clp
->cl_count
) > 1)
5962 nfs4_schedule_state_renewal(clp
);
5963 nfs_put_client(clp
);
5967 static int nfs41_sequence_handle_errors(struct rpc_task
*task
, struct nfs_client
*clp
)
5969 switch(task
->tk_status
) {
5970 case -NFS4ERR_DELAY
:
5971 rpc_delay(task
, NFS4_POLL_RETRY_MAX
);
5974 nfs4_schedule_lease_recovery(clp
);
5979 static void nfs41_sequence_call_done(struct rpc_task
*task
, void *data
)
5981 struct nfs4_sequence_data
*calldata
= data
;
5982 struct nfs_client
*clp
= calldata
->clp
;
5984 if (!nfs41_sequence_done(task
, task
->tk_msg
.rpc_resp
))
5987 if (task
->tk_status
< 0) {
5988 dprintk("%s ERROR %d\n", __func__
, task
->tk_status
);
5989 if (atomic_read(&clp
->cl_count
) == 1)
5992 if (nfs41_sequence_handle_errors(task
, clp
) == -EAGAIN
) {
5993 rpc_restart_call_prepare(task
);
5997 dprintk("%s rpc_cred %p\n", __func__
, task
->tk_msg
.rpc_cred
);
5999 dprintk("<-- %s\n", __func__
);
6002 static void nfs41_sequence_prepare(struct rpc_task
*task
, void *data
)
6004 struct nfs4_sequence_data
*calldata
= data
;
6005 struct nfs_client
*clp
= calldata
->clp
;
6006 struct nfs4_sequence_args
*args
;
6007 struct nfs4_sequence_res
*res
;
6009 args
= task
->tk_msg
.rpc_argp
;
6010 res
= task
->tk_msg
.rpc_resp
;
6012 nfs41_setup_sequence(clp
->cl_session
, args
, res
, task
);
6015 static const struct rpc_call_ops nfs41_sequence_ops
= {
6016 .rpc_call_done
= nfs41_sequence_call_done
,
6017 .rpc_call_prepare
= nfs41_sequence_prepare
,
6018 .rpc_release
= nfs41_sequence_release
,
6021 static struct rpc_task
*_nfs41_proc_sequence(struct nfs_client
*clp
,
6022 struct rpc_cred
*cred
,
6025 struct nfs4_sequence_data
*calldata
;
6026 struct rpc_message msg
= {
6027 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SEQUENCE
],
6030 struct rpc_task_setup task_setup_data
= {
6031 .rpc_client
= clp
->cl_rpcclient
,
6032 .rpc_message
= &msg
,
6033 .callback_ops
= &nfs41_sequence_ops
,
6034 .flags
= RPC_TASK_ASYNC
| RPC_TASK_TIMEOUT
,
6037 if (!atomic_inc_not_zero(&clp
->cl_count
))
6038 return ERR_PTR(-EIO
);
6039 calldata
= kzalloc(sizeof(*calldata
), GFP_NOFS
);
6040 if (calldata
== NULL
) {
6041 nfs_put_client(clp
);
6042 return ERR_PTR(-ENOMEM
);
6044 nfs41_init_sequence(&calldata
->args
, &calldata
->res
, 0);
6046 nfs4_set_sequence_privileged(&calldata
->args
);
6047 msg
.rpc_argp
= &calldata
->args
;
6048 msg
.rpc_resp
= &calldata
->res
;
6049 calldata
->clp
= clp
;
6050 task_setup_data
.callback_data
= calldata
;
6052 return rpc_run_task(&task_setup_data
);
6055 static int nfs41_proc_async_sequence(struct nfs_client
*clp
, struct rpc_cred
*cred
, unsigned renew_flags
)
6057 struct rpc_task
*task
;
6060 if ((renew_flags
& NFS4_RENEW_TIMEOUT
) == 0)
6062 task
= _nfs41_proc_sequence(clp
, cred
, false);
6064 ret
= PTR_ERR(task
);
6066 rpc_put_task_async(task
);
6067 dprintk("<-- %s status=%d\n", __func__
, ret
);
6071 static int nfs4_proc_sequence(struct nfs_client
*clp
, struct rpc_cred
*cred
)
6073 struct rpc_task
*task
;
6076 task
= _nfs41_proc_sequence(clp
, cred
, true);
6078 ret
= PTR_ERR(task
);
6081 ret
= rpc_wait_for_completion_task(task
);
6083 struct nfs4_sequence_res
*res
= task
->tk_msg
.rpc_resp
;
6085 if (task
->tk_status
== 0)
6086 nfs41_handle_sequence_flag_errors(clp
, res
->sr_status_flags
);
6087 ret
= task
->tk_status
;
6091 dprintk("<-- %s status=%d\n", __func__
, ret
);
6095 struct nfs4_reclaim_complete_data
{
6096 struct nfs_client
*clp
;
6097 struct nfs41_reclaim_complete_args arg
;
6098 struct nfs41_reclaim_complete_res res
;
6101 static void nfs4_reclaim_complete_prepare(struct rpc_task
*task
, void *data
)
6103 struct nfs4_reclaim_complete_data
*calldata
= data
;
6105 nfs41_setup_sequence(calldata
->clp
->cl_session
,
6106 &calldata
->arg
.seq_args
,
6107 &calldata
->res
.seq_res
,
6111 static int nfs41_reclaim_complete_handle_errors(struct rpc_task
*task
, struct nfs_client
*clp
)
6113 switch(task
->tk_status
) {
6115 case -NFS4ERR_COMPLETE_ALREADY
:
6116 case -NFS4ERR_WRONG_CRED
: /* What to do here? */
6118 case -NFS4ERR_DELAY
:
6119 rpc_delay(task
, NFS4_POLL_RETRY_MAX
);
6121 case -NFS4ERR_RETRY_UNCACHED_REP
:
6124 nfs4_schedule_lease_recovery(clp
);
6129 static void nfs4_reclaim_complete_done(struct rpc_task
*task
, void *data
)
6131 struct nfs4_reclaim_complete_data
*calldata
= data
;
6132 struct nfs_client
*clp
= calldata
->clp
;
6133 struct nfs4_sequence_res
*res
= &calldata
->res
.seq_res
;
6135 dprintk("--> %s\n", __func__
);
6136 if (!nfs41_sequence_done(task
, res
))
6139 if (nfs41_reclaim_complete_handle_errors(task
, clp
) == -EAGAIN
) {
6140 rpc_restart_call_prepare(task
);
6143 dprintk("<-- %s\n", __func__
);
6146 static void nfs4_free_reclaim_complete_data(void *data
)
6148 struct nfs4_reclaim_complete_data
*calldata
= data
;
6153 static const struct rpc_call_ops nfs4_reclaim_complete_call_ops
= {
6154 .rpc_call_prepare
= nfs4_reclaim_complete_prepare
,
6155 .rpc_call_done
= nfs4_reclaim_complete_done
,
6156 .rpc_release
= nfs4_free_reclaim_complete_data
,
6160 * Issue a global reclaim complete.
6162 static int nfs41_proc_reclaim_complete(struct nfs_client
*clp
)
6164 struct nfs4_reclaim_complete_data
*calldata
;
6165 struct rpc_task
*task
;
6166 struct rpc_message msg
= {
6167 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RECLAIM_COMPLETE
],
6169 struct rpc_task_setup task_setup_data
= {
6170 .rpc_client
= clp
->cl_rpcclient
,
6171 .rpc_message
= &msg
,
6172 .callback_ops
= &nfs4_reclaim_complete_call_ops
,
6173 .flags
= RPC_TASK_ASYNC
,
6175 int status
= -ENOMEM
;
6177 dprintk("--> %s\n", __func__
);
6178 calldata
= kzalloc(sizeof(*calldata
), GFP_NOFS
);
6179 if (calldata
== NULL
)
6181 calldata
->clp
= clp
;
6182 calldata
->arg
.one_fs
= 0;
6184 nfs41_init_sequence(&calldata
->arg
.seq_args
, &calldata
->res
.seq_res
, 0);
6185 nfs4_set_sequence_privileged(&calldata
->arg
.seq_args
);
6186 msg
.rpc_argp
= &calldata
->arg
;
6187 msg
.rpc_resp
= &calldata
->res
;
6188 task_setup_data
.callback_data
= calldata
;
6189 task
= rpc_run_task(&task_setup_data
);
6191 status
= PTR_ERR(task
);
6194 status
= nfs4_wait_for_completion_rpc_task(task
);
6196 status
= task
->tk_status
;
6200 dprintk("<-- %s status=%d\n", __func__
, status
);
6205 nfs4_layoutget_prepare(struct rpc_task
*task
, void *calldata
)
6207 struct nfs4_layoutget
*lgp
= calldata
;
6208 struct nfs_server
*server
= NFS_SERVER(lgp
->args
.inode
);
6209 struct nfs4_session
*session
= nfs4_get_session(server
);
6211 dprintk("--> %s\n", __func__
);
6212 /* Note the is a race here, where a CB_LAYOUTRECALL can come in
6213 * right now covering the LAYOUTGET we are about to send.
6214 * However, that is not so catastrophic, and there seems
6215 * to be no way to prevent it completely.
6217 if (nfs41_setup_sequence(session
, &lgp
->args
.seq_args
,
6218 &lgp
->res
.seq_res
, task
))
6220 if (pnfs_choose_layoutget_stateid(&lgp
->args
.stateid
,
6221 NFS_I(lgp
->args
.inode
)->layout
,
6222 lgp
->args
.ctx
->state
)) {
6223 rpc_exit(task
, NFS4_OK
);
6227 static void nfs4_layoutget_done(struct rpc_task
*task
, void *calldata
)
6229 struct nfs4_layoutget
*lgp
= calldata
;
6230 struct inode
*inode
= lgp
->args
.inode
;
6231 struct nfs_server
*server
= NFS_SERVER(inode
);
6232 struct pnfs_layout_hdr
*lo
;
6233 struct nfs4_state
*state
= NULL
;
6234 unsigned long timeo
, giveup
;
6236 dprintk("--> %s\n", __func__
);
6238 if (!nfs41_sequence_done(task
, &lgp
->res
.seq_res
))
6241 switch (task
->tk_status
) {
6244 case -NFS4ERR_LAYOUTTRYLATER
:
6245 case -NFS4ERR_RECALLCONFLICT
:
6246 timeo
= rpc_get_timeout(task
->tk_client
);
6247 giveup
= lgp
->args
.timestamp
+ timeo
;
6248 if (time_after(giveup
, jiffies
))
6249 task
->tk_status
= -NFS4ERR_DELAY
;
6251 case -NFS4ERR_EXPIRED
:
6252 case -NFS4ERR_BAD_STATEID
:
6253 spin_lock(&inode
->i_lock
);
6254 lo
= NFS_I(inode
)->layout
;
6255 if (!lo
|| list_empty(&lo
->plh_segs
)) {
6256 spin_unlock(&inode
->i_lock
);
6257 /* If the open stateid was bad, then recover it. */
6258 state
= lgp
->args
.ctx
->state
;
6262 pnfs_mark_matching_lsegs_invalid(lo
, &head
, NULL
);
6263 spin_unlock(&inode
->i_lock
);
6264 /* Mark the bad layout state as invalid, then
6265 * retry using the open stateid. */
6266 pnfs_free_lseg_list(&head
);
6269 if (nfs4_async_handle_error(task
, server
, state
) == -EAGAIN
)
6270 rpc_restart_call_prepare(task
);
6272 dprintk("<-- %s\n", __func__
);
6275 static size_t max_response_pages(struct nfs_server
*server
)
6277 u32 max_resp_sz
= server
->nfs_client
->cl_session
->fc_attrs
.max_resp_sz
;
6278 return nfs_page_array_len(0, max_resp_sz
);
6281 static void nfs4_free_pages(struct page
**pages
, size_t size
)
6288 for (i
= 0; i
< size
; i
++) {
6291 __free_page(pages
[i
]);
6296 static struct page
**nfs4_alloc_pages(size_t size
, gfp_t gfp_flags
)
6298 struct page
**pages
;
6301 pages
= kcalloc(size
, sizeof(struct page
*), gfp_flags
);
6303 dprintk("%s: can't alloc array of %zu pages\n", __func__
, size
);
6307 for (i
= 0; i
< size
; i
++) {
6308 pages
[i
] = alloc_page(gfp_flags
);
6310 dprintk("%s: failed to allocate page\n", __func__
);
6311 nfs4_free_pages(pages
, size
);
6319 static void nfs4_layoutget_release(void *calldata
)
6321 struct nfs4_layoutget
*lgp
= calldata
;
6322 struct inode
*inode
= lgp
->args
.inode
;
6323 struct nfs_server
*server
= NFS_SERVER(inode
);
6324 size_t max_pages
= max_response_pages(server
);
6326 dprintk("--> %s\n", __func__
);
6327 nfs4_free_pages(lgp
->args
.layout
.pages
, max_pages
);
6328 pnfs_put_layout_hdr(NFS_I(inode
)->layout
);
6329 put_nfs_open_context(lgp
->args
.ctx
);
6331 dprintk("<-- %s\n", __func__
);
6334 static const struct rpc_call_ops nfs4_layoutget_call_ops
= {
6335 .rpc_call_prepare
= nfs4_layoutget_prepare
,
6336 .rpc_call_done
= nfs4_layoutget_done
,
6337 .rpc_release
= nfs4_layoutget_release
,
6340 struct pnfs_layout_segment
*
6341 nfs4_proc_layoutget(struct nfs4_layoutget
*lgp
, gfp_t gfp_flags
)
6343 struct inode
*inode
= lgp
->args
.inode
;
6344 struct nfs_server
*server
= NFS_SERVER(inode
);
6345 size_t max_pages
= max_response_pages(server
);
6346 struct rpc_task
*task
;
6347 struct rpc_message msg
= {
6348 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LAYOUTGET
],
6349 .rpc_argp
= &lgp
->args
,
6350 .rpc_resp
= &lgp
->res
,
6352 struct rpc_task_setup task_setup_data
= {
6353 .rpc_client
= server
->client
,
6354 .rpc_message
= &msg
,
6355 .callback_ops
= &nfs4_layoutget_call_ops
,
6356 .callback_data
= lgp
,
6357 .flags
= RPC_TASK_ASYNC
,
6359 struct pnfs_layout_segment
*lseg
= NULL
;
6362 dprintk("--> %s\n", __func__
);
6364 lgp
->args
.layout
.pages
= nfs4_alloc_pages(max_pages
, gfp_flags
);
6365 if (!lgp
->args
.layout
.pages
) {
6366 nfs4_layoutget_release(lgp
);
6367 return ERR_PTR(-ENOMEM
);
6369 lgp
->args
.layout
.pglen
= max_pages
* PAGE_SIZE
;
6370 lgp
->args
.timestamp
= jiffies
;
6372 lgp
->res
.layoutp
= &lgp
->args
.layout
;
6373 lgp
->res
.seq_res
.sr_slot
= NULL
;
6374 nfs41_init_sequence(&lgp
->args
.seq_args
, &lgp
->res
.seq_res
, 0);
6376 /* nfs4_layoutget_release calls pnfs_put_layout_hdr */
6377 pnfs_get_layout_hdr(NFS_I(inode
)->layout
);
6379 task
= rpc_run_task(&task_setup_data
);
6381 return ERR_CAST(task
);
6382 status
= nfs4_wait_for_completion_rpc_task(task
);
6384 status
= task
->tk_status
;
6385 /* if layoutp->len is 0, nfs4_layoutget_prepare called rpc_exit */
6386 if (status
== 0 && lgp
->res
.layoutp
->len
)
6387 lseg
= pnfs_layout_process(lgp
);
6389 dprintk("<-- %s status=%d\n", __func__
, status
);
6391 return ERR_PTR(status
);
6396 nfs4_layoutreturn_prepare(struct rpc_task
*task
, void *calldata
)
6398 struct nfs4_layoutreturn
*lrp
= calldata
;
6400 dprintk("--> %s\n", __func__
);
6401 nfs41_setup_sequence(lrp
->clp
->cl_session
,
6402 &lrp
->args
.seq_args
,
6407 static void nfs4_layoutreturn_done(struct rpc_task
*task
, void *calldata
)
6409 struct nfs4_layoutreturn
*lrp
= calldata
;
6410 struct nfs_server
*server
;
6412 dprintk("--> %s\n", __func__
);
6414 if (!nfs41_sequence_done(task
, &lrp
->res
.seq_res
))
6417 server
= NFS_SERVER(lrp
->args
.inode
);
6418 if (nfs4_async_handle_error(task
, server
, NULL
) == -EAGAIN
) {
6419 rpc_restart_call_prepare(task
);
6422 dprintk("<-- %s\n", __func__
);
6425 static void nfs4_layoutreturn_release(void *calldata
)
6427 struct nfs4_layoutreturn
*lrp
= calldata
;
6428 struct pnfs_layout_hdr
*lo
= lrp
->args
.layout
;
6430 dprintk("--> %s\n", __func__
);
6431 spin_lock(&lo
->plh_inode
->i_lock
);
6432 if (lrp
->res
.lrs_present
)
6433 pnfs_set_layout_stateid(lo
, &lrp
->res
.stateid
, true);
6434 lo
->plh_block_lgets
--;
6435 spin_unlock(&lo
->plh_inode
->i_lock
);
6436 pnfs_put_layout_hdr(lrp
->args
.layout
);
6438 dprintk("<-- %s\n", __func__
);
6441 static const struct rpc_call_ops nfs4_layoutreturn_call_ops
= {
6442 .rpc_call_prepare
= nfs4_layoutreturn_prepare
,
6443 .rpc_call_done
= nfs4_layoutreturn_done
,
6444 .rpc_release
= nfs4_layoutreturn_release
,
6447 int nfs4_proc_layoutreturn(struct nfs4_layoutreturn
*lrp
)
6449 struct rpc_task
*task
;
6450 struct rpc_message msg
= {
6451 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LAYOUTRETURN
],
6452 .rpc_argp
= &lrp
->args
,
6453 .rpc_resp
= &lrp
->res
,
6455 struct rpc_task_setup task_setup_data
= {
6456 .rpc_client
= lrp
->clp
->cl_rpcclient
,
6457 .rpc_message
= &msg
,
6458 .callback_ops
= &nfs4_layoutreturn_call_ops
,
6459 .callback_data
= lrp
,
6463 dprintk("--> %s\n", __func__
);
6464 nfs41_init_sequence(&lrp
->args
.seq_args
, &lrp
->res
.seq_res
, 1);
6465 task
= rpc_run_task(&task_setup_data
);
6467 return PTR_ERR(task
);
6468 status
= task
->tk_status
;
6469 dprintk("<-- %s status=%d\n", __func__
, status
);
6475 * Retrieve the list of Data Server devices from the MDS.
6477 static int _nfs4_getdevicelist(struct nfs_server
*server
,
6478 const struct nfs_fh
*fh
,
6479 struct pnfs_devicelist
*devlist
)
6481 struct nfs4_getdevicelist_args args
= {
6483 .layoutclass
= server
->pnfs_curr_ld
->id
,
6485 struct nfs4_getdevicelist_res res
= {
6488 struct rpc_message msg
= {
6489 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GETDEVICELIST
],
6495 dprintk("--> %s\n", __func__
);
6496 status
= nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
,
6498 dprintk("<-- %s status=%d\n", __func__
, status
);
6502 int nfs4_proc_getdevicelist(struct nfs_server
*server
,
6503 const struct nfs_fh
*fh
,
6504 struct pnfs_devicelist
*devlist
)
6506 struct nfs4_exception exception
= { };
6510 err
= nfs4_handle_exception(server
,
6511 _nfs4_getdevicelist(server
, fh
, devlist
),
6513 } while (exception
.retry
);
6515 dprintk("%s: err=%d, num_devs=%u\n", __func__
,
6516 err
, devlist
->num_devs
);
6520 EXPORT_SYMBOL_GPL(nfs4_proc_getdevicelist
);
6523 _nfs4_proc_getdeviceinfo(struct nfs_server
*server
, struct pnfs_device
*pdev
)
6525 struct nfs4_getdeviceinfo_args args
= {
6528 struct nfs4_getdeviceinfo_res res
= {
6531 struct rpc_message msg
= {
6532 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GETDEVICEINFO
],
6538 dprintk("--> %s\n", __func__
);
6539 status
= nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
6540 dprintk("<-- %s status=%d\n", __func__
, status
);
6545 int nfs4_proc_getdeviceinfo(struct nfs_server
*server
, struct pnfs_device
*pdev
)
6547 struct nfs4_exception exception
= { };
6551 err
= nfs4_handle_exception(server
,
6552 _nfs4_proc_getdeviceinfo(server
, pdev
),
6554 } while (exception
.retry
);
6557 EXPORT_SYMBOL_GPL(nfs4_proc_getdeviceinfo
);
6559 static void nfs4_layoutcommit_prepare(struct rpc_task
*task
, void *calldata
)
6561 struct nfs4_layoutcommit_data
*data
= calldata
;
6562 struct nfs_server
*server
= NFS_SERVER(data
->args
.inode
);
6563 struct nfs4_session
*session
= nfs4_get_session(server
);
6565 nfs41_setup_sequence(session
,
6566 &data
->args
.seq_args
,
6572 nfs4_layoutcommit_done(struct rpc_task
*task
, void *calldata
)
6574 struct nfs4_layoutcommit_data
*data
= calldata
;
6575 struct nfs_server
*server
= NFS_SERVER(data
->args
.inode
);
6577 if (!nfs41_sequence_done(task
, &data
->res
.seq_res
))
6580 switch (task
->tk_status
) { /* Just ignore these failures */
6581 case -NFS4ERR_DELEG_REVOKED
: /* layout was recalled */
6582 case -NFS4ERR_BADIOMODE
: /* no IOMODE_RW layout for range */
6583 case -NFS4ERR_BADLAYOUT
: /* no layout */
6584 case -NFS4ERR_GRACE
: /* loca_recalim always false */
6585 task
->tk_status
= 0;
6588 nfs_post_op_update_inode_force_wcc(data
->args
.inode
,
6592 if (nfs4_async_handle_error(task
, server
, NULL
) == -EAGAIN
) {
6593 rpc_restart_call_prepare(task
);
6599 static void nfs4_layoutcommit_release(void *calldata
)
6601 struct nfs4_layoutcommit_data
*data
= calldata
;
6603 pnfs_cleanup_layoutcommit(data
);
6604 put_rpccred(data
->cred
);
6608 static const struct rpc_call_ops nfs4_layoutcommit_ops
= {
6609 .rpc_call_prepare
= nfs4_layoutcommit_prepare
,
6610 .rpc_call_done
= nfs4_layoutcommit_done
,
6611 .rpc_release
= nfs4_layoutcommit_release
,
6615 nfs4_proc_layoutcommit(struct nfs4_layoutcommit_data
*data
, bool sync
)
6617 struct rpc_message msg
= {
6618 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LAYOUTCOMMIT
],
6619 .rpc_argp
= &data
->args
,
6620 .rpc_resp
= &data
->res
,
6621 .rpc_cred
= data
->cred
,
6623 struct rpc_task_setup task_setup_data
= {
6624 .task
= &data
->task
,
6625 .rpc_client
= NFS_CLIENT(data
->args
.inode
),
6626 .rpc_message
= &msg
,
6627 .callback_ops
= &nfs4_layoutcommit_ops
,
6628 .callback_data
= data
,
6629 .flags
= RPC_TASK_ASYNC
,
6631 struct rpc_task
*task
;
6634 dprintk("NFS: %4d initiating layoutcommit call. sync %d "
6635 "lbw: %llu inode %lu\n",
6636 data
->task
.tk_pid
, sync
,
6637 data
->args
.lastbytewritten
,
6638 data
->args
.inode
->i_ino
);
6640 nfs41_init_sequence(&data
->args
.seq_args
, &data
->res
.seq_res
, 1);
6641 task
= rpc_run_task(&task_setup_data
);
6643 return PTR_ERR(task
);
6646 status
= nfs4_wait_for_completion_rpc_task(task
);
6649 status
= task
->tk_status
;
6651 dprintk("%s: status %d\n", __func__
, status
);
6657 _nfs41_proc_secinfo_no_name(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
6658 struct nfs_fsinfo
*info
, struct nfs4_secinfo_flavors
*flavors
)
6660 struct nfs41_secinfo_no_name_args args
= {
6661 .style
= SECINFO_STYLE_CURRENT_FH
,
6663 struct nfs4_secinfo_res res
= {
6666 struct rpc_message msg
= {
6667 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SECINFO_NO_NAME
],
6671 return nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
6675 nfs41_proc_secinfo_no_name(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
6676 struct nfs_fsinfo
*info
, struct nfs4_secinfo_flavors
*flavors
)
6678 struct nfs4_exception exception
= { };
6681 err
= _nfs41_proc_secinfo_no_name(server
, fhandle
, info
, flavors
);
6684 case -NFS4ERR_WRONGSEC
:
6685 case -NFS4ERR_NOTSUPP
:
6688 err
= nfs4_handle_exception(server
, err
, &exception
);
6690 } while (exception
.retry
);
6696 nfs41_find_root_sec(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
6697 struct nfs_fsinfo
*info
)
6701 rpc_authflavor_t flavor
;
6702 struct nfs4_secinfo_flavors
*flavors
;
6704 page
= alloc_page(GFP_KERNEL
);
6710 flavors
= page_address(page
);
6711 err
= nfs41_proc_secinfo_no_name(server
, fhandle
, info
, flavors
);
6714 * Fall back on "guess and check" method if
6715 * the server doesn't support SECINFO_NO_NAME
6717 if (err
== -NFS4ERR_WRONGSEC
|| err
== -NFS4ERR_NOTSUPP
) {
6718 err
= nfs4_find_root_sec(server
, fhandle
, info
);
6724 flavor
= nfs_find_best_sec(flavors
);
6726 err
= nfs4_lookup_root_sec(server
, fhandle
, info
, flavor
);
6736 static int _nfs41_test_stateid(struct nfs_server
*server
, nfs4_stateid
*stateid
)
6739 struct nfs41_test_stateid_args args
= {
6742 struct nfs41_test_stateid_res res
;
6743 struct rpc_message msg
= {
6744 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_TEST_STATEID
],
6749 dprintk("NFS call test_stateid %p\n", stateid
);
6750 nfs41_init_sequence(&args
.seq_args
, &res
.seq_res
, 0);
6751 nfs4_set_sequence_privileged(&args
.seq_args
);
6752 status
= nfs4_call_sync_sequence(server
->client
, server
, &msg
,
6753 &args
.seq_args
, &res
.seq_res
);
6754 if (status
!= NFS_OK
) {
6755 dprintk("NFS reply test_stateid: failed, %d\n", status
);
6758 dprintk("NFS reply test_stateid: succeeded, %d\n", -res
.status
);
6763 * nfs41_test_stateid - perform a TEST_STATEID operation
6765 * @server: server / transport on which to perform the operation
6766 * @stateid: state ID to test
6768 * Returns NFS_OK if the server recognizes that "stateid" is valid.
6769 * Otherwise a negative NFS4ERR value is returned if the operation
6770 * failed or the state ID is not currently valid.
6772 static int nfs41_test_stateid(struct nfs_server
*server
, nfs4_stateid
*stateid
)
6774 struct nfs4_exception exception
= { };
6777 err
= _nfs41_test_stateid(server
, stateid
);
6778 if (err
!= -NFS4ERR_DELAY
)
6780 nfs4_handle_exception(server
, err
, &exception
);
6781 } while (exception
.retry
);
6785 struct nfs_free_stateid_data
{
6786 struct nfs_server
*server
;
6787 struct nfs41_free_stateid_args args
;
6788 struct nfs41_free_stateid_res res
;
6791 static void nfs41_free_stateid_prepare(struct rpc_task
*task
, void *calldata
)
6793 struct nfs_free_stateid_data
*data
= calldata
;
6794 nfs41_setup_sequence(nfs4_get_session(data
->server
),
6795 &data
->args
.seq_args
,
6800 static void nfs41_free_stateid_done(struct rpc_task
*task
, void *calldata
)
6802 struct nfs_free_stateid_data
*data
= calldata
;
6804 nfs41_sequence_done(task
, &data
->res
.seq_res
);
6806 switch (task
->tk_status
) {
6807 case -NFS4ERR_DELAY
:
6808 if (nfs4_async_handle_error(task
, data
->server
, NULL
) == -EAGAIN
)
6809 rpc_restart_call_prepare(task
);
6813 static void nfs41_free_stateid_release(void *calldata
)
6818 const struct rpc_call_ops nfs41_free_stateid_ops
= {
6819 .rpc_call_prepare
= nfs41_free_stateid_prepare
,
6820 .rpc_call_done
= nfs41_free_stateid_done
,
6821 .rpc_release
= nfs41_free_stateid_release
,
6824 static struct rpc_task
*_nfs41_free_stateid(struct nfs_server
*server
,
6825 nfs4_stateid
*stateid
,
6828 struct rpc_message msg
= {
6829 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_FREE_STATEID
],
6831 struct rpc_task_setup task_setup
= {
6832 .rpc_client
= server
->client
,
6833 .rpc_message
= &msg
,
6834 .callback_ops
= &nfs41_free_stateid_ops
,
6835 .flags
= RPC_TASK_ASYNC
,
6837 struct nfs_free_stateid_data
*data
;
6839 dprintk("NFS call free_stateid %p\n", stateid
);
6840 data
= kmalloc(sizeof(*data
), GFP_NOFS
);
6842 return ERR_PTR(-ENOMEM
);
6843 data
->server
= server
;
6844 nfs4_stateid_copy(&data
->args
.stateid
, stateid
);
6846 task_setup
.callback_data
= data
;
6848 msg
.rpc_argp
= &data
->args
;
6849 msg
.rpc_resp
= &data
->res
;
6850 nfs41_init_sequence(&data
->args
.seq_args
, &data
->res
.seq_res
, 0);
6852 nfs4_set_sequence_privileged(&data
->args
.seq_args
);
6854 return rpc_run_task(&task_setup
);
6858 * nfs41_free_stateid - perform a FREE_STATEID operation
6860 * @server: server / transport on which to perform the operation
6861 * @stateid: state ID to release
6863 * Returns NFS_OK if the server freed "stateid". Otherwise a
6864 * negative NFS4ERR value is returned.
6866 static int nfs41_free_stateid(struct nfs_server
*server
, nfs4_stateid
*stateid
)
6868 struct rpc_task
*task
;
6871 task
= _nfs41_free_stateid(server
, stateid
, true);
6873 return PTR_ERR(task
);
6874 ret
= rpc_wait_for_completion_task(task
);
6876 ret
= task
->tk_status
;
6881 static int nfs41_free_lock_state(struct nfs_server
*server
, struct nfs4_lock_state
*lsp
)
6883 struct rpc_task
*task
;
6885 task
= _nfs41_free_stateid(server
, &lsp
->ls_stateid
, false);
6886 nfs4_free_lock_state(server
, lsp
);
6888 return PTR_ERR(task
);
6893 static bool nfs41_match_stateid(const nfs4_stateid
*s1
,
6894 const nfs4_stateid
*s2
)
6896 if (memcmp(s1
->other
, s2
->other
, sizeof(s1
->other
)) != 0)
6899 if (s1
->seqid
== s2
->seqid
)
6901 if (s1
->seqid
== 0 || s2
->seqid
== 0)
6907 #endif /* CONFIG_NFS_V4_1 */
6909 static bool nfs4_match_stateid(const nfs4_stateid
*s1
,
6910 const nfs4_stateid
*s2
)
6912 return nfs4_stateid_match(s1
, s2
);
6916 static const struct nfs4_state_recovery_ops nfs40_reboot_recovery_ops
= {
6917 .owner_flag_bit
= NFS_OWNER_RECLAIM_REBOOT
,
6918 .state_flag_bit
= NFS_STATE_RECLAIM_REBOOT
,
6919 .recover_open
= nfs4_open_reclaim
,
6920 .recover_lock
= nfs4_lock_reclaim
,
6921 .establish_clid
= nfs4_init_clientid
,
6922 .get_clid_cred
= nfs4_get_setclientid_cred
,
6923 .detect_trunking
= nfs40_discover_server_trunking
,
6926 #if defined(CONFIG_NFS_V4_1)
6927 static const struct nfs4_state_recovery_ops nfs41_reboot_recovery_ops
= {
6928 .owner_flag_bit
= NFS_OWNER_RECLAIM_REBOOT
,
6929 .state_flag_bit
= NFS_STATE_RECLAIM_REBOOT
,
6930 .recover_open
= nfs4_open_reclaim
,
6931 .recover_lock
= nfs4_lock_reclaim
,
6932 .establish_clid
= nfs41_init_clientid
,
6933 .get_clid_cred
= nfs4_get_exchange_id_cred
,
6934 .reclaim_complete
= nfs41_proc_reclaim_complete
,
6935 .detect_trunking
= nfs41_discover_server_trunking
,
6937 #endif /* CONFIG_NFS_V4_1 */
6939 static const struct nfs4_state_recovery_ops nfs40_nograce_recovery_ops
= {
6940 .owner_flag_bit
= NFS_OWNER_RECLAIM_NOGRACE
,
6941 .state_flag_bit
= NFS_STATE_RECLAIM_NOGRACE
,
6942 .recover_open
= nfs4_open_expired
,
6943 .recover_lock
= nfs4_lock_expired
,
6944 .establish_clid
= nfs4_init_clientid
,
6945 .get_clid_cred
= nfs4_get_setclientid_cred
,
6948 #if defined(CONFIG_NFS_V4_1)
6949 static const struct nfs4_state_recovery_ops nfs41_nograce_recovery_ops
= {
6950 .owner_flag_bit
= NFS_OWNER_RECLAIM_NOGRACE
,
6951 .state_flag_bit
= NFS_STATE_RECLAIM_NOGRACE
,
6952 .recover_open
= nfs41_open_expired
,
6953 .recover_lock
= nfs41_lock_expired
,
6954 .establish_clid
= nfs41_init_clientid
,
6955 .get_clid_cred
= nfs4_get_exchange_id_cred
,
6957 #endif /* CONFIG_NFS_V4_1 */
6959 static const struct nfs4_state_maintenance_ops nfs40_state_renewal_ops
= {
6960 .sched_state_renewal
= nfs4_proc_async_renew
,
6961 .get_state_renewal_cred_locked
= nfs4_get_renew_cred_locked
,
6962 .renew_lease
= nfs4_proc_renew
,
6965 #if defined(CONFIG_NFS_V4_1)
6966 static const struct nfs4_state_maintenance_ops nfs41_state_renewal_ops
= {
6967 .sched_state_renewal
= nfs41_proc_async_sequence
,
6968 .get_state_renewal_cred_locked
= nfs4_get_machine_cred_locked
,
6969 .renew_lease
= nfs4_proc_sequence
,
6973 static const struct nfs4_minor_version_ops nfs_v4_0_minor_ops
= {
6975 .init_caps
= NFS_CAP_READDIRPLUS
6976 | NFS_CAP_ATOMIC_OPEN
6977 | NFS_CAP_CHANGE_ATTR
6978 | NFS_CAP_POSIX_LOCK
,
6979 .call_sync
= _nfs4_call_sync
,
6980 .match_stateid
= nfs4_match_stateid
,
6981 .find_root_sec
= nfs4_find_root_sec
,
6982 .free_lock_state
= nfs4_release_lockowner
,
6983 .reboot_recovery_ops
= &nfs40_reboot_recovery_ops
,
6984 .nograce_recovery_ops
= &nfs40_nograce_recovery_ops
,
6985 .state_renewal_ops
= &nfs40_state_renewal_ops
,
6988 #if defined(CONFIG_NFS_V4_1)
6989 static const struct nfs4_minor_version_ops nfs_v4_1_minor_ops
= {
6991 .init_caps
= NFS_CAP_READDIRPLUS
6992 | NFS_CAP_ATOMIC_OPEN
6993 | NFS_CAP_CHANGE_ATTR
6994 | NFS_CAP_POSIX_LOCK
6995 | NFS_CAP_STATEID_NFSV41
6996 | NFS_CAP_ATOMIC_OPEN_V1
,
6997 .call_sync
= nfs4_call_sync_sequence
,
6998 .match_stateid
= nfs41_match_stateid
,
6999 .find_root_sec
= nfs41_find_root_sec
,
7000 .free_lock_state
= nfs41_free_lock_state
,
7001 .reboot_recovery_ops
= &nfs41_reboot_recovery_ops
,
7002 .nograce_recovery_ops
= &nfs41_nograce_recovery_ops
,
7003 .state_renewal_ops
= &nfs41_state_renewal_ops
,
7007 const struct nfs4_minor_version_ops
*nfs_v4_minor_ops
[] = {
7008 [0] = &nfs_v4_0_minor_ops
,
7009 #if defined(CONFIG_NFS_V4_1)
7010 [1] = &nfs_v4_1_minor_ops
,
7014 const struct inode_operations nfs4_dir_inode_operations
= {
7015 .create
= nfs_create
,
7016 .lookup
= nfs_lookup
,
7017 .atomic_open
= nfs_atomic_open
,
7019 .unlink
= nfs_unlink
,
7020 .symlink
= nfs_symlink
,
7024 .rename
= nfs_rename
,
7025 .permission
= nfs_permission
,
7026 .getattr
= nfs_getattr
,
7027 .setattr
= nfs_setattr
,
7028 .getxattr
= generic_getxattr
,
7029 .setxattr
= generic_setxattr
,
7030 .listxattr
= generic_listxattr
,
7031 .removexattr
= generic_removexattr
,
7034 static const struct inode_operations nfs4_file_inode_operations
= {
7035 .permission
= nfs_permission
,
7036 .getattr
= nfs_getattr
,
7037 .setattr
= nfs_setattr
,
7038 .getxattr
= generic_getxattr
,
7039 .setxattr
= generic_setxattr
,
7040 .listxattr
= generic_listxattr
,
7041 .removexattr
= generic_removexattr
,
7044 const struct nfs_rpc_ops nfs_v4_clientops
= {
7045 .version
= 4, /* protocol version */
7046 .dentry_ops
= &nfs4_dentry_operations
,
7047 .dir_inode_ops
= &nfs4_dir_inode_operations
,
7048 .file_inode_ops
= &nfs4_file_inode_operations
,
7049 .file_ops
= &nfs4_file_operations
,
7050 .getroot
= nfs4_proc_get_root
,
7051 .submount
= nfs4_submount
,
7052 .try_mount
= nfs4_try_mount
,
7053 .getattr
= nfs4_proc_getattr
,
7054 .setattr
= nfs4_proc_setattr
,
7055 .lookup
= nfs4_proc_lookup
,
7056 .access
= nfs4_proc_access
,
7057 .readlink
= nfs4_proc_readlink
,
7058 .create
= nfs4_proc_create
,
7059 .remove
= nfs4_proc_remove
,
7060 .unlink_setup
= nfs4_proc_unlink_setup
,
7061 .unlink_rpc_prepare
= nfs4_proc_unlink_rpc_prepare
,
7062 .unlink_done
= nfs4_proc_unlink_done
,
7063 .rename
= nfs4_proc_rename
,
7064 .rename_setup
= nfs4_proc_rename_setup
,
7065 .rename_rpc_prepare
= nfs4_proc_rename_rpc_prepare
,
7066 .rename_done
= nfs4_proc_rename_done
,
7067 .link
= nfs4_proc_link
,
7068 .symlink
= nfs4_proc_symlink
,
7069 .mkdir
= nfs4_proc_mkdir
,
7070 .rmdir
= nfs4_proc_remove
,
7071 .readdir
= nfs4_proc_readdir
,
7072 .mknod
= nfs4_proc_mknod
,
7073 .statfs
= nfs4_proc_statfs
,
7074 .fsinfo
= nfs4_proc_fsinfo
,
7075 .pathconf
= nfs4_proc_pathconf
,
7076 .set_capabilities
= nfs4_server_capabilities
,
7077 .decode_dirent
= nfs4_decode_dirent
,
7078 .read_setup
= nfs4_proc_read_setup
,
7079 .read_pageio_init
= pnfs_pageio_init_read
,
7080 .read_rpc_prepare
= nfs4_proc_read_rpc_prepare
,
7081 .read_done
= nfs4_read_done
,
7082 .write_setup
= nfs4_proc_write_setup
,
7083 .write_pageio_init
= pnfs_pageio_init_write
,
7084 .write_rpc_prepare
= nfs4_proc_write_rpc_prepare
,
7085 .write_done
= nfs4_write_done
,
7086 .commit_setup
= nfs4_proc_commit_setup
,
7087 .commit_rpc_prepare
= nfs4_proc_commit_rpc_prepare
,
7088 .commit_done
= nfs4_commit_done
,
7089 .lock
= nfs4_proc_lock
,
7090 .clear_acl_cache
= nfs4_zap_acl_attr
,
7091 .close_context
= nfs4_close_context
,
7092 .open_context
= nfs4_atomic_open
,
7093 .have_delegation
= nfs4_have_delegation
,
7094 .return_delegation
= nfs4_inode_return_delegation
,
7095 .alloc_client
= nfs4_alloc_client
,
7096 .init_client
= nfs4_init_client
,
7097 .free_client
= nfs4_free_client
,
7098 .create_server
= nfs4_create_server
,
7099 .clone_server
= nfs_clone_server
,
7102 static const struct xattr_handler nfs4_xattr_nfs4_acl_handler
= {
7103 .prefix
= XATTR_NAME_NFSV4_ACL
,
7104 .list
= nfs4_xattr_list_nfs4_acl
,
7105 .get
= nfs4_xattr_get_nfs4_acl
,
7106 .set
= nfs4_xattr_set_nfs4_acl
,
7109 const struct xattr_handler
*nfs4_xattr_handlers
[] = {
7110 &nfs4_xattr_nfs4_acl_handler
,