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_unsafe(*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 */
1171 ret
= nfs_refresh_inode(inode
, &data
->f_attr
);
1175 if (data
->o_res
.delegation_type
!= 0)
1176 nfs4_opendata_check_deleg(data
, state
);
1178 update_open_stateid(state
, &data
->o_res
.stateid
, NULL
,
1180 atomic_inc(&state
->count
);
1184 return ERR_PTR(ret
);
1188 static struct nfs4_state
*
1189 _nfs4_opendata_to_nfs4_state(struct nfs4_opendata
*data
)
1191 struct inode
*inode
;
1192 struct nfs4_state
*state
= NULL
;
1195 if (!data
->rpc_done
) {
1196 state
= nfs4_try_open_cached(data
);
1201 if (!(data
->f_attr
.valid
& NFS_ATTR_FATTR
))
1203 inode
= nfs_fhget(data
->dir
->d_sb
, &data
->o_res
.fh
, &data
->f_attr
);
1204 ret
= PTR_ERR(inode
);
1208 state
= nfs4_get_open_state(inode
, data
->owner
);
1211 if (data
->o_res
.delegation_type
!= 0)
1212 nfs4_opendata_check_deleg(data
, state
);
1213 update_open_stateid(state
, &data
->o_res
.stateid
, NULL
,
1217 nfs_release_seqid(data
->o_arg
.seqid
);
1222 return ERR_PTR(ret
);
1225 static struct nfs4_state
*
1226 nfs4_opendata_to_nfs4_state(struct nfs4_opendata
*data
)
1228 if (data
->o_arg
.claim
== NFS4_OPEN_CLAIM_PREVIOUS
)
1229 return _nfs4_opendata_reclaim_to_nfs4_state(data
);
1230 return _nfs4_opendata_to_nfs4_state(data
);
1233 static struct nfs_open_context
*nfs4_state_find_open_context(struct nfs4_state
*state
)
1235 struct nfs_inode
*nfsi
= NFS_I(state
->inode
);
1236 struct nfs_open_context
*ctx
;
1238 spin_lock(&state
->inode
->i_lock
);
1239 list_for_each_entry(ctx
, &nfsi
->open_files
, list
) {
1240 if (ctx
->state
!= state
)
1242 get_nfs_open_context(ctx
);
1243 spin_unlock(&state
->inode
->i_lock
);
1246 spin_unlock(&state
->inode
->i_lock
);
1247 return ERR_PTR(-ENOENT
);
1250 static struct nfs4_opendata
*nfs4_open_recoverdata_alloc(struct nfs_open_context
*ctx
,
1251 struct nfs4_state
*state
, enum open_claim_type4 claim
)
1253 struct nfs4_opendata
*opendata
;
1255 opendata
= nfs4_opendata_alloc(ctx
->dentry
, state
->owner
, 0, 0,
1256 NULL
, claim
, GFP_NOFS
);
1257 if (opendata
== NULL
)
1258 return ERR_PTR(-ENOMEM
);
1259 opendata
->state
= state
;
1260 atomic_inc(&state
->count
);
1264 static int nfs4_open_recover_helper(struct nfs4_opendata
*opendata
, fmode_t fmode
, struct nfs4_state
**res
)
1266 struct nfs4_state
*newstate
;
1269 opendata
->o_arg
.open_flags
= 0;
1270 opendata
->o_arg
.fmode
= fmode
;
1271 memset(&opendata
->o_res
, 0, sizeof(opendata
->o_res
));
1272 memset(&opendata
->c_res
, 0, sizeof(opendata
->c_res
));
1273 nfs4_init_opendata_res(opendata
);
1274 ret
= _nfs4_recover_proc_open(opendata
);
1277 newstate
= nfs4_opendata_to_nfs4_state(opendata
);
1278 if (IS_ERR(newstate
))
1279 return PTR_ERR(newstate
);
1280 nfs4_close_state(newstate
, fmode
);
1285 static int nfs4_open_recover(struct nfs4_opendata
*opendata
, struct nfs4_state
*state
)
1287 struct nfs4_state
*newstate
;
1290 /* memory barrier prior to reading state->n_* */
1291 clear_bit(NFS_DELEGATED_STATE
, &state
->flags
);
1292 clear_bit(NFS_OPEN_STATE
, &state
->flags
);
1294 if (state
->n_rdwr
!= 0) {
1295 clear_bit(NFS_O_RDWR_STATE
, &state
->flags
);
1296 ret
= nfs4_open_recover_helper(opendata
, FMODE_READ
|FMODE_WRITE
, &newstate
);
1299 if (newstate
!= state
)
1302 if (state
->n_wronly
!= 0) {
1303 clear_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
1304 ret
= nfs4_open_recover_helper(opendata
, FMODE_WRITE
, &newstate
);
1307 if (newstate
!= state
)
1310 if (state
->n_rdonly
!= 0) {
1311 clear_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
1312 ret
= nfs4_open_recover_helper(opendata
, FMODE_READ
, &newstate
);
1315 if (newstate
!= state
)
1319 * We may have performed cached opens for all three recoveries.
1320 * Check if we need to update the current stateid.
1322 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) == 0 &&
1323 !nfs4_stateid_match(&state
->stateid
, &state
->open_stateid
)) {
1324 write_seqlock(&state
->seqlock
);
1325 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) == 0)
1326 nfs4_stateid_copy(&state
->stateid
, &state
->open_stateid
);
1327 write_sequnlock(&state
->seqlock
);
1334 * reclaim state on the server after a reboot.
1336 static int _nfs4_do_open_reclaim(struct nfs_open_context
*ctx
, struct nfs4_state
*state
)
1338 struct nfs_delegation
*delegation
;
1339 struct nfs4_opendata
*opendata
;
1340 fmode_t delegation_type
= 0;
1343 opendata
= nfs4_open_recoverdata_alloc(ctx
, state
,
1344 NFS4_OPEN_CLAIM_PREVIOUS
);
1345 if (IS_ERR(opendata
))
1346 return PTR_ERR(opendata
);
1348 delegation
= rcu_dereference(NFS_I(state
->inode
)->delegation
);
1349 if (delegation
!= NULL
&& test_bit(NFS_DELEGATION_NEED_RECLAIM
, &delegation
->flags
) != 0)
1350 delegation_type
= delegation
->type
;
1352 opendata
->o_arg
.u
.delegation_type
= delegation_type
;
1353 status
= nfs4_open_recover(opendata
, state
);
1354 nfs4_opendata_put(opendata
);
1358 static int nfs4_do_open_reclaim(struct nfs_open_context
*ctx
, struct nfs4_state
*state
)
1360 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
1361 struct nfs4_exception exception
= { };
1364 err
= _nfs4_do_open_reclaim(ctx
, state
);
1365 if (nfs4_clear_cap_atomic_open_v1(server
, err
, &exception
))
1367 if (err
!= -NFS4ERR_DELAY
)
1369 nfs4_handle_exception(server
, err
, &exception
);
1370 } while (exception
.retry
);
1374 static int nfs4_open_reclaim(struct nfs4_state_owner
*sp
, struct nfs4_state
*state
)
1376 struct nfs_open_context
*ctx
;
1379 ctx
= nfs4_state_find_open_context(state
);
1382 ret
= nfs4_do_open_reclaim(ctx
, state
);
1383 put_nfs_open_context(ctx
);
1387 static int nfs4_handle_delegation_recall_error(struct nfs_server
*server
, struct nfs4_state
*state
, const nfs4_stateid
*stateid
, int err
)
1391 printk(KERN_ERR
"NFS: %s: unhandled error "
1392 "%d.\n", __func__
, err
);
1397 case -NFS4ERR_BADSESSION
:
1398 case -NFS4ERR_BADSLOT
:
1399 case -NFS4ERR_BAD_HIGH_SLOT
:
1400 case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION
:
1401 case -NFS4ERR_DEADSESSION
:
1402 set_bit(NFS_DELEGATED_STATE
, &state
->flags
);
1403 nfs4_schedule_session_recovery(server
->nfs_client
->cl_session
, err
);
1405 case -NFS4ERR_STALE_CLIENTID
:
1406 case -NFS4ERR_STALE_STATEID
:
1407 set_bit(NFS_DELEGATED_STATE
, &state
->flags
);
1408 case -NFS4ERR_EXPIRED
:
1409 /* Don't recall a delegation if it was lost */
1410 nfs4_schedule_lease_recovery(server
->nfs_client
);
1412 case -NFS4ERR_DELEG_REVOKED
:
1413 case -NFS4ERR_ADMIN_REVOKED
:
1414 case -NFS4ERR_BAD_STATEID
:
1415 case -NFS4ERR_OPENMODE
:
1416 nfs_inode_find_state_and_recover(state
->inode
,
1418 nfs4_schedule_stateid_recovery(server
, state
);
1420 case -NFS4ERR_DELAY
:
1421 case -NFS4ERR_GRACE
:
1422 set_bit(NFS_DELEGATED_STATE
, &state
->flags
);
1426 case -NFS4ERR_DENIED
:
1427 /* kill_proc(fl->fl_pid, SIGLOST, 1); */
1433 int nfs4_open_delegation_recall(struct nfs_open_context
*ctx
, struct nfs4_state
*state
, const nfs4_stateid
*stateid
)
1435 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
1436 struct nfs4_opendata
*opendata
;
1439 opendata
= nfs4_open_recoverdata_alloc(ctx
, state
,
1440 NFS4_OPEN_CLAIM_DELEG_CUR_FH
);
1441 if (IS_ERR(opendata
))
1442 return PTR_ERR(opendata
);
1443 nfs4_stateid_copy(&opendata
->o_arg
.u
.delegation
, stateid
);
1444 err
= nfs4_open_recover(opendata
, state
);
1445 nfs4_opendata_put(opendata
);
1446 return nfs4_handle_delegation_recall_error(server
, state
, stateid
, err
);
1449 static void nfs4_open_confirm_done(struct rpc_task
*task
, void *calldata
)
1451 struct nfs4_opendata
*data
= calldata
;
1453 data
->rpc_status
= task
->tk_status
;
1454 if (data
->rpc_status
== 0) {
1455 nfs4_stateid_copy(&data
->o_res
.stateid
, &data
->c_res
.stateid
);
1456 nfs_confirm_seqid(&data
->owner
->so_seqid
, 0);
1457 renew_lease(data
->o_res
.server
, data
->timestamp
);
1462 static void nfs4_open_confirm_release(void *calldata
)
1464 struct nfs4_opendata
*data
= calldata
;
1465 struct nfs4_state
*state
= NULL
;
1467 /* If this request hasn't been cancelled, do nothing */
1468 if (data
->cancelled
== 0)
1470 /* In case of error, no cleanup! */
1471 if (!data
->rpc_done
)
1473 state
= nfs4_opendata_to_nfs4_state(data
);
1475 nfs4_close_state(state
, data
->o_arg
.fmode
);
1477 nfs4_opendata_put(data
);
1480 static const struct rpc_call_ops nfs4_open_confirm_ops
= {
1481 .rpc_call_done
= nfs4_open_confirm_done
,
1482 .rpc_release
= nfs4_open_confirm_release
,
1486 * Note: On error, nfs4_proc_open_confirm will free the struct nfs4_opendata
1488 static int _nfs4_proc_open_confirm(struct nfs4_opendata
*data
)
1490 struct nfs_server
*server
= NFS_SERVER(data
->dir
->d_inode
);
1491 struct rpc_task
*task
;
1492 struct rpc_message msg
= {
1493 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_OPEN_CONFIRM
],
1494 .rpc_argp
= &data
->c_arg
,
1495 .rpc_resp
= &data
->c_res
,
1496 .rpc_cred
= data
->owner
->so_cred
,
1498 struct rpc_task_setup task_setup_data
= {
1499 .rpc_client
= server
->client
,
1500 .rpc_message
= &msg
,
1501 .callback_ops
= &nfs4_open_confirm_ops
,
1502 .callback_data
= data
,
1503 .workqueue
= nfsiod_workqueue
,
1504 .flags
= RPC_TASK_ASYNC
,
1508 kref_get(&data
->kref
);
1510 data
->rpc_status
= 0;
1511 data
->timestamp
= jiffies
;
1512 task
= rpc_run_task(&task_setup_data
);
1514 return PTR_ERR(task
);
1515 status
= nfs4_wait_for_completion_rpc_task(task
);
1517 data
->cancelled
= 1;
1520 status
= data
->rpc_status
;
1525 static void nfs4_open_prepare(struct rpc_task
*task
, void *calldata
)
1527 struct nfs4_opendata
*data
= calldata
;
1528 struct nfs4_state_owner
*sp
= data
->owner
;
1529 struct nfs_client
*clp
= sp
->so_server
->nfs_client
;
1531 if (nfs_wait_on_sequence(data
->o_arg
.seqid
, task
) != 0)
1534 * Check if we still need to send an OPEN call, or if we can use
1535 * a delegation instead.
1537 if (data
->state
!= NULL
) {
1538 struct nfs_delegation
*delegation
;
1540 if (can_open_cached(data
->state
, data
->o_arg
.fmode
, data
->o_arg
.open_flags
))
1543 delegation
= rcu_dereference(NFS_I(data
->state
->inode
)->delegation
);
1544 if (data
->o_arg
.claim
!= NFS4_OPEN_CLAIM_DELEGATE_CUR
&&
1545 data
->o_arg
.claim
!= NFS4_OPEN_CLAIM_DELEG_CUR_FH
&&
1546 can_open_delegated(delegation
, data
->o_arg
.fmode
))
1547 goto unlock_no_action
;
1550 /* Update client id. */
1551 data
->o_arg
.clientid
= clp
->cl_clientid
;
1552 switch (data
->o_arg
.claim
) {
1553 case NFS4_OPEN_CLAIM_PREVIOUS
:
1554 case NFS4_OPEN_CLAIM_DELEG_CUR_FH
:
1555 case NFS4_OPEN_CLAIM_DELEG_PREV_FH
:
1556 data
->o_arg
.open_bitmap
= &nfs4_open_noattr_bitmap
[0];
1557 case NFS4_OPEN_CLAIM_FH
:
1558 task
->tk_msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_OPEN_NOATTR
];
1559 nfs_copy_fh(&data
->o_res
.fh
, data
->o_arg
.fh
);
1561 data
->timestamp
= jiffies
;
1562 if (nfs4_setup_sequence(data
->o_arg
.server
,
1563 &data
->o_arg
.seq_args
,
1564 &data
->o_res
.seq_res
,
1566 nfs_release_seqid(data
->o_arg
.seqid
);
1568 /* Set the create mode (note dependency on the session type) */
1569 data
->o_arg
.createmode
= NFS4_CREATE_UNCHECKED
;
1570 if (data
->o_arg
.open_flags
& O_EXCL
) {
1571 data
->o_arg
.createmode
= NFS4_CREATE_EXCLUSIVE
;
1572 if (nfs4_has_persistent_session(clp
))
1573 data
->o_arg
.createmode
= NFS4_CREATE_GUARDED
;
1574 else if (clp
->cl_mvops
->minor_version
> 0)
1575 data
->o_arg
.createmode
= NFS4_CREATE_EXCLUSIVE4_1
;
1581 task
->tk_action
= NULL
;
1583 nfs4_sequence_done(task
, &data
->o_res
.seq_res
);
1586 static void nfs4_open_done(struct rpc_task
*task
, void *calldata
)
1588 struct nfs4_opendata
*data
= calldata
;
1590 data
->rpc_status
= task
->tk_status
;
1592 if (!nfs4_sequence_done(task
, &data
->o_res
.seq_res
))
1595 if (task
->tk_status
== 0) {
1596 if (data
->o_res
.f_attr
->valid
& NFS_ATTR_FATTR_TYPE
) {
1597 switch (data
->o_res
.f_attr
->mode
& S_IFMT
) {
1601 data
->rpc_status
= -ELOOP
;
1604 data
->rpc_status
= -EISDIR
;
1607 data
->rpc_status
= -ENOTDIR
;
1610 renew_lease(data
->o_res
.server
, data
->timestamp
);
1611 if (!(data
->o_res
.rflags
& NFS4_OPEN_RESULT_CONFIRM
))
1612 nfs_confirm_seqid(&data
->owner
->so_seqid
, 0);
1617 static void nfs4_open_release(void *calldata
)
1619 struct nfs4_opendata
*data
= calldata
;
1620 struct nfs4_state
*state
= NULL
;
1622 /* If this request hasn't been cancelled, do nothing */
1623 if (data
->cancelled
== 0)
1625 /* In case of error, no cleanup! */
1626 if (data
->rpc_status
!= 0 || !data
->rpc_done
)
1628 /* In case we need an open_confirm, no cleanup! */
1629 if (data
->o_res
.rflags
& NFS4_OPEN_RESULT_CONFIRM
)
1631 state
= nfs4_opendata_to_nfs4_state(data
);
1633 nfs4_close_state(state
, data
->o_arg
.fmode
);
1635 nfs4_opendata_put(data
);
1638 static const struct rpc_call_ops nfs4_open_ops
= {
1639 .rpc_call_prepare
= nfs4_open_prepare
,
1640 .rpc_call_done
= nfs4_open_done
,
1641 .rpc_release
= nfs4_open_release
,
1644 static int nfs4_run_open_task(struct nfs4_opendata
*data
, int isrecover
)
1646 struct inode
*dir
= data
->dir
->d_inode
;
1647 struct nfs_server
*server
= NFS_SERVER(dir
);
1648 struct nfs_openargs
*o_arg
= &data
->o_arg
;
1649 struct nfs_openres
*o_res
= &data
->o_res
;
1650 struct rpc_task
*task
;
1651 struct rpc_message msg
= {
1652 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_OPEN
],
1655 .rpc_cred
= data
->owner
->so_cred
,
1657 struct rpc_task_setup task_setup_data
= {
1658 .rpc_client
= server
->client
,
1659 .rpc_message
= &msg
,
1660 .callback_ops
= &nfs4_open_ops
,
1661 .callback_data
= data
,
1662 .workqueue
= nfsiod_workqueue
,
1663 .flags
= RPC_TASK_ASYNC
,
1667 nfs41_init_sequence(&o_arg
->seq_args
, &o_res
->seq_res
, 1);
1668 kref_get(&data
->kref
);
1670 data
->rpc_status
= 0;
1671 data
->cancelled
= 0;
1672 data
->is_recover
= 0;
1674 nfs4_set_sequence_privileged(&o_arg
->seq_args
);
1675 data
->is_recover
= 1;
1677 task
= rpc_run_task(&task_setup_data
);
1679 return PTR_ERR(task
);
1680 status
= nfs4_wait_for_completion_rpc_task(task
);
1682 data
->cancelled
= 1;
1685 status
= data
->rpc_status
;
1691 static int _nfs4_recover_proc_open(struct nfs4_opendata
*data
)
1693 struct inode
*dir
= data
->dir
->d_inode
;
1694 struct nfs_openres
*o_res
= &data
->o_res
;
1697 status
= nfs4_run_open_task(data
, 1);
1698 if (status
!= 0 || !data
->rpc_done
)
1701 nfs_fattr_map_and_free_names(NFS_SERVER(dir
), &data
->f_attr
);
1703 if (o_res
->rflags
& NFS4_OPEN_RESULT_CONFIRM
) {
1704 status
= _nfs4_proc_open_confirm(data
);
1712 static int nfs4_opendata_access(struct rpc_cred
*cred
,
1713 struct nfs4_opendata
*opendata
,
1714 struct nfs4_state
*state
, fmode_t fmode
,
1717 struct nfs_access_entry cache
;
1720 /* access call failed or for some reason the server doesn't
1721 * support any access modes -- defer access call until later */
1722 if (opendata
->o_res
.access_supported
== 0)
1726 /* don't check MAY_WRITE - a newly created file may not have
1727 * write mode bits, but POSIX allows the creating process to write.
1728 * use openflags to check for exec, because fmode won't
1729 * always have FMODE_EXEC set when file open for exec. */
1730 if (openflags
& __FMODE_EXEC
) {
1731 /* ONLY check for exec rights */
1733 } else if (fmode
& FMODE_READ
)
1737 cache
.jiffies
= jiffies
;
1738 nfs_access_set_mask(&cache
, opendata
->o_res
.access_result
);
1739 nfs_access_add_cache(state
->inode
, &cache
);
1741 if ((mask
& ~cache
.mask
& (MAY_READ
| MAY_EXEC
)) == 0)
1744 /* even though OPEN succeeded, access is denied. Close the file */
1745 nfs4_close_state(state
, fmode
);
1750 * Note: On error, nfs4_proc_open will free the struct nfs4_opendata
1752 static int _nfs4_proc_open(struct nfs4_opendata
*data
)
1754 struct inode
*dir
= data
->dir
->d_inode
;
1755 struct nfs_server
*server
= NFS_SERVER(dir
);
1756 struct nfs_openargs
*o_arg
= &data
->o_arg
;
1757 struct nfs_openres
*o_res
= &data
->o_res
;
1760 status
= nfs4_run_open_task(data
, 0);
1761 if (!data
->rpc_done
)
1764 if (status
== -NFS4ERR_BADNAME
&&
1765 !(o_arg
->open_flags
& O_CREAT
))
1770 nfs_fattr_map_and_free_names(server
, &data
->f_attr
);
1772 if (o_arg
->open_flags
& O_CREAT
)
1773 update_changeattr(dir
, &o_res
->cinfo
);
1774 if ((o_res
->rflags
& NFS4_OPEN_RESULT_LOCKTYPE_POSIX
) == 0)
1775 server
->caps
&= ~NFS_CAP_POSIX_LOCK
;
1776 if(o_res
->rflags
& NFS4_OPEN_RESULT_CONFIRM
) {
1777 status
= _nfs4_proc_open_confirm(data
);
1781 if (!(o_res
->f_attr
->valid
& NFS_ATTR_FATTR
))
1782 _nfs4_proc_getattr(server
, &o_res
->fh
, o_res
->f_attr
);
1786 static int nfs4_recover_expired_lease(struct nfs_server
*server
)
1788 return nfs4_client_recover_expired_lease(server
->nfs_client
);
1793 * reclaim state on the server after a network partition.
1794 * Assumes caller holds the appropriate lock
1796 static int _nfs4_open_expired(struct nfs_open_context
*ctx
, struct nfs4_state
*state
)
1798 struct nfs4_opendata
*opendata
;
1801 opendata
= nfs4_open_recoverdata_alloc(ctx
, state
,
1802 NFS4_OPEN_CLAIM_FH
);
1803 if (IS_ERR(opendata
))
1804 return PTR_ERR(opendata
);
1805 ret
= nfs4_open_recover(opendata
, state
);
1807 d_drop(ctx
->dentry
);
1808 nfs4_opendata_put(opendata
);
1812 static int nfs4_do_open_expired(struct nfs_open_context
*ctx
, struct nfs4_state
*state
)
1814 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
1815 struct nfs4_exception exception
= { };
1819 err
= _nfs4_open_expired(ctx
, state
);
1820 if (nfs4_clear_cap_atomic_open_v1(server
, err
, &exception
))
1825 case -NFS4ERR_GRACE
:
1826 case -NFS4ERR_DELAY
:
1827 nfs4_handle_exception(server
, err
, &exception
);
1830 } while (exception
.retry
);
1835 static int nfs4_open_expired(struct nfs4_state_owner
*sp
, struct nfs4_state
*state
)
1837 struct nfs_open_context
*ctx
;
1840 ctx
= nfs4_state_find_open_context(state
);
1843 ret
= nfs4_do_open_expired(ctx
, state
);
1844 put_nfs_open_context(ctx
);
1848 static void nfs_finish_clear_delegation_stateid(struct nfs4_state
*state
)
1850 nfs_remove_bad_delegation(state
->inode
);
1851 write_seqlock(&state
->seqlock
);
1852 nfs4_stateid_copy(&state
->stateid
, &state
->open_stateid
);
1853 write_sequnlock(&state
->seqlock
);
1854 clear_bit(NFS_DELEGATED_STATE
, &state
->flags
);
1857 static void nfs40_clear_delegation_stateid(struct nfs4_state
*state
)
1859 if (rcu_access_pointer(NFS_I(state
->inode
)->delegation
) != NULL
)
1860 nfs_finish_clear_delegation_stateid(state
);
1863 static int nfs40_open_expired(struct nfs4_state_owner
*sp
, struct nfs4_state
*state
)
1865 /* NFSv4.0 doesn't allow for delegation recovery on open expire */
1866 nfs40_clear_delegation_stateid(state
);
1867 return nfs4_open_expired(sp
, state
);
1870 #if defined(CONFIG_NFS_V4_1)
1871 static void nfs41_clear_delegation_stateid(struct nfs4_state
*state
)
1873 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
1874 nfs4_stateid
*stateid
= &state
->stateid
;
1877 /* If a state reset has been done, test_stateid is unneeded */
1878 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) == 0)
1881 status
= nfs41_test_stateid(server
, stateid
);
1882 if (status
!= NFS_OK
) {
1883 /* Free the stateid unless the server explicitly
1884 * informs us the stateid is unrecognized. */
1885 if (status
!= -NFS4ERR_BAD_STATEID
)
1886 nfs41_free_stateid(server
, stateid
);
1887 nfs_remove_bad_delegation(state
->inode
);
1889 write_seqlock(&state
->seqlock
);
1890 nfs4_stateid_copy(&state
->stateid
, &state
->open_stateid
);
1891 write_sequnlock(&state
->seqlock
);
1892 clear_bit(NFS_DELEGATED_STATE
, &state
->flags
);
1897 * nfs41_check_open_stateid - possibly free an open stateid
1899 * @state: NFSv4 state for an inode
1901 * Returns NFS_OK if recovery for this stateid is now finished.
1902 * Otherwise a negative NFS4ERR value is returned.
1904 static int nfs41_check_open_stateid(struct nfs4_state
*state
)
1906 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
1907 nfs4_stateid
*stateid
= &state
->open_stateid
;
1910 /* If a state reset has been done, test_stateid is unneeded */
1911 if ((test_bit(NFS_O_RDONLY_STATE
, &state
->flags
) == 0) &&
1912 (test_bit(NFS_O_WRONLY_STATE
, &state
->flags
) == 0) &&
1913 (test_bit(NFS_O_RDWR_STATE
, &state
->flags
) == 0))
1914 return -NFS4ERR_BAD_STATEID
;
1916 status
= nfs41_test_stateid(server
, stateid
);
1917 if (status
!= NFS_OK
) {
1918 /* Free the stateid unless the server explicitly
1919 * informs us the stateid is unrecognized. */
1920 if (status
!= -NFS4ERR_BAD_STATEID
)
1921 nfs41_free_stateid(server
, stateid
);
1923 clear_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
1924 clear_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
1925 clear_bit(NFS_O_RDWR_STATE
, &state
->flags
);
1926 clear_bit(NFS_OPEN_STATE
, &state
->flags
);
1931 static int nfs41_open_expired(struct nfs4_state_owner
*sp
, struct nfs4_state
*state
)
1935 nfs41_clear_delegation_stateid(state
);
1936 status
= nfs41_check_open_stateid(state
);
1937 if (status
!= NFS_OK
)
1938 status
= nfs4_open_expired(sp
, state
);
1944 * on an EXCLUSIVE create, the server should send back a bitmask with FATTR4-*
1945 * fields corresponding to attributes that were used to store the verifier.
1946 * Make sure we clobber those fields in the later setattr call
1948 static inline void nfs4_exclusive_attrset(struct nfs4_opendata
*opendata
, struct iattr
*sattr
)
1950 if ((opendata
->o_res
.attrset
[1] & FATTR4_WORD1_TIME_ACCESS
) &&
1951 !(sattr
->ia_valid
& ATTR_ATIME_SET
))
1952 sattr
->ia_valid
|= ATTR_ATIME
;
1954 if ((opendata
->o_res
.attrset
[1] & FATTR4_WORD1_TIME_MODIFY
) &&
1955 !(sattr
->ia_valid
& ATTR_MTIME_SET
))
1956 sattr
->ia_valid
|= ATTR_MTIME
;
1959 static int _nfs4_open_and_get_state(struct nfs4_opendata
*opendata
,
1962 struct nfs4_state
**res
)
1964 struct nfs4_state_owner
*sp
= opendata
->owner
;
1965 struct nfs_server
*server
= sp
->so_server
;
1966 struct nfs4_state
*state
;
1970 seq
= raw_seqcount_begin(&sp
->so_reclaim_seqcount
);
1972 ret
= _nfs4_proc_open(opendata
);
1976 state
= nfs4_opendata_to_nfs4_state(opendata
);
1977 ret
= PTR_ERR(state
);
1980 if (server
->caps
& NFS_CAP_POSIX_LOCK
)
1981 set_bit(NFS_STATE_POSIX_LOCKS
, &state
->flags
);
1983 ret
= nfs4_opendata_access(sp
->so_cred
, opendata
, state
, fmode
, flags
);
1987 if (read_seqcount_retry(&sp
->so_reclaim_seqcount
, seq
))
1988 nfs4_schedule_stateid_recovery(server
, state
);
1995 * Returns a referenced nfs4_state
1997 static int _nfs4_do_open(struct inode
*dir
,
1998 struct dentry
*dentry
,
2001 struct iattr
*sattr
,
2002 struct rpc_cred
*cred
,
2003 struct nfs4_state
**res
,
2004 struct nfs4_threshold
**ctx_th
)
2006 struct nfs4_state_owner
*sp
;
2007 struct nfs4_state
*state
= NULL
;
2008 struct nfs_server
*server
= NFS_SERVER(dir
);
2009 struct nfs4_opendata
*opendata
;
2010 enum open_claim_type4 claim
= NFS4_OPEN_CLAIM_NULL
;
2013 /* Protect against reboot recovery conflicts */
2015 sp
= nfs4_get_state_owner(server
, cred
, GFP_KERNEL
);
2017 dprintk("nfs4_do_open: nfs4_get_state_owner failed!\n");
2020 status
= nfs4_recover_expired_lease(server
);
2022 goto err_put_state_owner
;
2023 if (dentry
->d_inode
!= NULL
)
2024 nfs4_return_incompatible_delegation(dentry
->d_inode
, fmode
);
2026 if (dentry
->d_inode
)
2027 claim
= NFS4_OPEN_CLAIM_FH
;
2028 opendata
= nfs4_opendata_alloc(dentry
, sp
, fmode
, flags
, sattr
,
2030 if (opendata
== NULL
)
2031 goto err_put_state_owner
;
2033 if (ctx_th
&& server
->attr_bitmask
[2] & FATTR4_WORD2_MDSTHRESHOLD
) {
2034 opendata
->f_attr
.mdsthreshold
= pnfs_mdsthreshold_alloc();
2035 if (!opendata
->f_attr
.mdsthreshold
)
2036 goto err_opendata_put
;
2037 opendata
->o_arg
.open_bitmap
= &nfs4_pnfs_open_bitmap
[0];
2039 if (dentry
->d_inode
!= NULL
)
2040 opendata
->state
= nfs4_get_open_state(dentry
->d_inode
, sp
);
2042 status
= _nfs4_open_and_get_state(opendata
, fmode
, flags
, &state
);
2044 goto err_opendata_put
;
2046 if ((opendata
->o_arg
.open_flags
& (O_CREAT
|O_EXCL
)) == (O_CREAT
|O_EXCL
) &&
2047 (opendata
->o_arg
.createmode
!= NFS4_CREATE_GUARDED
)) {
2048 nfs4_exclusive_attrset(opendata
, sattr
);
2050 nfs_fattr_init(opendata
->o_res
.f_attr
);
2051 status
= nfs4_do_setattr(state
->inode
, cred
,
2052 opendata
->o_res
.f_attr
, sattr
,
2055 nfs_setattr_update_inode(state
->inode
, sattr
);
2056 nfs_post_op_update_inode(state
->inode
, opendata
->o_res
.f_attr
);
2059 if (pnfs_use_threshold(ctx_th
, opendata
->f_attr
.mdsthreshold
, server
))
2060 *ctx_th
= opendata
->f_attr
.mdsthreshold
;
2062 kfree(opendata
->f_attr
.mdsthreshold
);
2063 opendata
->f_attr
.mdsthreshold
= NULL
;
2065 nfs4_opendata_put(opendata
);
2066 nfs4_put_state_owner(sp
);
2070 kfree(opendata
->f_attr
.mdsthreshold
);
2071 nfs4_opendata_put(opendata
);
2072 err_put_state_owner
:
2073 nfs4_put_state_owner(sp
);
2080 static struct nfs4_state
*nfs4_do_open(struct inode
*dir
,
2081 struct dentry
*dentry
,
2084 struct iattr
*sattr
,
2085 struct rpc_cred
*cred
,
2086 struct nfs4_threshold
**ctx_th
)
2088 struct nfs_server
*server
= NFS_SERVER(dir
);
2089 struct nfs4_exception exception
= { };
2090 struct nfs4_state
*res
;
2093 fmode
&= FMODE_READ
|FMODE_WRITE
|FMODE_EXEC
;
2095 status
= _nfs4_do_open(dir
, dentry
, fmode
, flags
, sattr
, cred
,
2099 /* NOTE: BAD_SEQID means the server and client disagree about the
2100 * book-keeping w.r.t. state-changing operations
2101 * (OPEN/CLOSE/LOCK/LOCKU...)
2102 * It is actually a sign of a bug on the client or on the server.
2104 * If we receive a BAD_SEQID error in the particular case of
2105 * doing an OPEN, we assume that nfs_increment_open_seqid() will
2106 * have unhashed the old state_owner for us, and that we can
2107 * therefore safely retry using a new one. We should still warn
2108 * the user though...
2110 if (status
== -NFS4ERR_BAD_SEQID
) {
2111 pr_warn_ratelimited("NFS: v4 server %s "
2112 " returned a bad sequence-id error!\n",
2113 NFS_SERVER(dir
)->nfs_client
->cl_hostname
);
2114 exception
.retry
= 1;
2118 * BAD_STATEID on OPEN means that the server cancelled our
2119 * state before it received the OPEN_CONFIRM.
2120 * Recover by retrying the request as per the discussion
2121 * on Page 181 of RFC3530.
2123 if (status
== -NFS4ERR_BAD_STATEID
) {
2124 exception
.retry
= 1;
2127 if (status
== -EAGAIN
) {
2128 /* We must have found a delegation */
2129 exception
.retry
= 1;
2132 if (nfs4_clear_cap_atomic_open_v1(server
, status
, &exception
))
2134 res
= ERR_PTR(nfs4_handle_exception(server
,
2135 status
, &exception
));
2136 } while (exception
.retry
);
2140 static int _nfs4_do_setattr(struct inode
*inode
, struct rpc_cred
*cred
,
2141 struct nfs_fattr
*fattr
, struct iattr
*sattr
,
2142 struct nfs4_state
*state
)
2144 struct nfs_server
*server
= NFS_SERVER(inode
);
2145 struct nfs_setattrargs arg
= {
2146 .fh
= NFS_FH(inode
),
2149 .bitmask
= server
->attr_bitmask
,
2151 struct nfs_setattrres res
= {
2155 struct rpc_message msg
= {
2156 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETATTR
],
2161 unsigned long timestamp
= jiffies
;
2166 nfs_fattr_init(fattr
);
2168 /* Servers should only apply open mode checks for file size changes */
2169 truncate
= (sattr
->ia_valid
& ATTR_SIZE
) ? true : false;
2170 fmode
= truncate
? FMODE_WRITE
: FMODE_READ
;
2172 if (nfs4_copy_delegation_stateid(&arg
.stateid
, inode
, fmode
)) {
2173 /* Use that stateid */
2174 } else if (truncate
&& state
!= NULL
&& nfs4_valid_open_stateid(state
)) {
2175 struct nfs_lockowner lockowner
= {
2176 .l_owner
= current
->files
,
2177 .l_pid
= current
->tgid
,
2179 nfs4_select_rw_stateid(&arg
.stateid
, state
, FMODE_WRITE
,
2182 nfs4_stateid_copy(&arg
.stateid
, &zero_stateid
);
2184 status
= nfs4_call_sync(server
->client
, server
, &msg
, &arg
.seq_args
, &res
.seq_res
, 1);
2185 if (status
== 0 && state
!= NULL
)
2186 renew_lease(server
, timestamp
);
2190 static int nfs4_do_setattr(struct inode
*inode
, struct rpc_cred
*cred
,
2191 struct nfs_fattr
*fattr
, struct iattr
*sattr
,
2192 struct nfs4_state
*state
)
2194 struct nfs_server
*server
= NFS_SERVER(inode
);
2195 struct nfs4_exception exception
= {
2201 err
= _nfs4_do_setattr(inode
, cred
, fattr
, sattr
, state
);
2203 case -NFS4ERR_OPENMODE
:
2204 if (!(sattr
->ia_valid
& ATTR_SIZE
)) {
2205 pr_warn_once("NFSv4: server %s is incorrectly "
2206 "applying open mode checks to "
2207 "a SETATTR that is not "
2208 "changing file size.\n",
2209 server
->nfs_client
->cl_hostname
);
2211 if (state
&& !(state
->state
& FMODE_WRITE
)) {
2213 if (sattr
->ia_valid
& ATTR_OPEN
)
2218 err
= nfs4_handle_exception(server
, err
, &exception
);
2219 } while (exception
.retry
);
2224 struct nfs4_closedata
{
2225 struct inode
*inode
;
2226 struct nfs4_state
*state
;
2227 struct nfs_closeargs arg
;
2228 struct nfs_closeres res
;
2229 struct nfs_fattr fattr
;
2230 unsigned long timestamp
;
2235 static void nfs4_free_closedata(void *data
)
2237 struct nfs4_closedata
*calldata
= data
;
2238 struct nfs4_state_owner
*sp
= calldata
->state
->owner
;
2239 struct super_block
*sb
= calldata
->state
->inode
->i_sb
;
2242 pnfs_roc_release(calldata
->state
->inode
);
2243 nfs4_put_open_state(calldata
->state
);
2244 nfs_free_seqid(calldata
->arg
.seqid
);
2245 nfs4_put_state_owner(sp
);
2246 nfs_sb_deactive(sb
);
2250 static void nfs4_close_clear_stateid_flags(struct nfs4_state
*state
,
2253 spin_lock(&state
->owner
->so_lock
);
2254 clear_bit(NFS_O_RDWR_STATE
, &state
->flags
);
2255 switch (fmode
& (FMODE_READ
|FMODE_WRITE
)) {
2257 clear_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
2260 clear_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
2263 clear_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
2264 clear_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
2265 clear_bit(NFS_OPEN_STATE
, &state
->flags
);
2267 spin_unlock(&state
->owner
->so_lock
);
2270 static void nfs4_close_done(struct rpc_task
*task
, void *data
)
2272 struct nfs4_closedata
*calldata
= data
;
2273 struct nfs4_state
*state
= calldata
->state
;
2274 struct nfs_server
*server
= NFS_SERVER(calldata
->inode
);
2276 dprintk("%s: begin!\n", __func__
);
2277 if (!nfs4_sequence_done(task
, &calldata
->res
.seq_res
))
2279 /* hmm. we are done with the inode, and in the process of freeing
2280 * the state_owner. we keep this around to process errors
2282 switch (task
->tk_status
) {
2285 pnfs_roc_set_barrier(state
->inode
,
2286 calldata
->roc_barrier
);
2287 nfs_set_open_stateid(state
, &calldata
->res
.stateid
, 0);
2288 renew_lease(server
, calldata
->timestamp
);
2289 nfs4_close_clear_stateid_flags(state
,
2290 calldata
->arg
.fmode
);
2292 case -NFS4ERR_STALE_STATEID
:
2293 case -NFS4ERR_OLD_STATEID
:
2294 case -NFS4ERR_BAD_STATEID
:
2295 case -NFS4ERR_EXPIRED
:
2296 if (calldata
->arg
.fmode
== 0)
2299 if (nfs4_async_handle_error(task
, server
, state
) == -EAGAIN
)
2300 rpc_restart_call_prepare(task
);
2302 nfs_release_seqid(calldata
->arg
.seqid
);
2303 nfs_refresh_inode(calldata
->inode
, calldata
->res
.fattr
);
2304 dprintk("%s: done, ret = %d!\n", __func__
, task
->tk_status
);
2307 static void nfs4_close_prepare(struct rpc_task
*task
, void *data
)
2309 struct nfs4_closedata
*calldata
= data
;
2310 struct nfs4_state
*state
= calldata
->state
;
2311 struct inode
*inode
= calldata
->inode
;
2312 bool is_rdonly
, is_wronly
, is_rdwr
;
2315 dprintk("%s: begin!\n", __func__
);
2316 if (nfs_wait_on_sequence(calldata
->arg
.seqid
, task
) != 0)
2319 task
->tk_msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_OPEN_DOWNGRADE
];
2320 spin_lock(&state
->owner
->so_lock
);
2321 is_rdwr
= test_bit(NFS_O_RDWR_STATE
, &state
->flags
);
2322 is_rdonly
= test_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
2323 is_wronly
= test_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
2324 /* Calculate the change in open mode */
2325 calldata
->arg
.fmode
= 0;
2326 if (state
->n_rdwr
== 0) {
2327 if (state
->n_rdonly
== 0)
2328 call_close
|= is_rdonly
;
2330 calldata
->arg
.fmode
|= FMODE_READ
;
2331 if (state
->n_wronly
== 0)
2332 call_close
|= is_wronly
;
2334 calldata
->arg
.fmode
|= FMODE_WRITE
;
2336 calldata
->arg
.fmode
|= FMODE_READ
|FMODE_WRITE
;
2338 if (calldata
->arg
.fmode
== 0)
2339 call_close
|= is_rdwr
;
2341 if (!nfs4_valid_open_stateid(state
))
2343 spin_unlock(&state
->owner
->so_lock
);
2346 /* Note: exit _without_ calling nfs4_close_done */
2350 if (calldata
->arg
.fmode
== 0) {
2351 task
->tk_msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_CLOSE
];
2352 if (calldata
->roc
&&
2353 pnfs_roc_drain(inode
, &calldata
->roc_barrier
, task
)) {
2354 nfs_release_seqid(calldata
->arg
.seqid
);
2359 nfs_fattr_init(calldata
->res
.fattr
);
2360 calldata
->timestamp
= jiffies
;
2361 if (nfs4_setup_sequence(NFS_SERVER(inode
),
2362 &calldata
->arg
.seq_args
,
2363 &calldata
->res
.seq_res
,
2365 nfs_release_seqid(calldata
->arg
.seqid
);
2366 dprintk("%s: done!\n", __func__
);
2369 task
->tk_action
= NULL
;
2371 nfs4_sequence_done(task
, &calldata
->res
.seq_res
);
2374 static const struct rpc_call_ops nfs4_close_ops
= {
2375 .rpc_call_prepare
= nfs4_close_prepare
,
2376 .rpc_call_done
= nfs4_close_done
,
2377 .rpc_release
= nfs4_free_closedata
,
2381 * It is possible for data to be read/written from a mem-mapped file
2382 * after the sys_close call (which hits the vfs layer as a flush).
2383 * This means that we can't safely call nfsv4 close on a file until
2384 * the inode is cleared. This in turn means that we are not good
2385 * NFSv4 citizens - we do not indicate to the server to update the file's
2386 * share state even when we are done with one of the three share
2387 * stateid's in the inode.
2389 * NOTE: Caller must be holding the sp->so_owner semaphore!
2391 int nfs4_do_close(struct nfs4_state
*state
, gfp_t gfp_mask
, int wait
)
2393 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
2394 struct nfs4_closedata
*calldata
;
2395 struct nfs4_state_owner
*sp
= state
->owner
;
2396 struct rpc_task
*task
;
2397 struct rpc_message msg
= {
2398 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_CLOSE
],
2399 .rpc_cred
= state
->owner
->so_cred
,
2401 struct rpc_task_setup task_setup_data
= {
2402 .rpc_client
= server
->client
,
2403 .rpc_message
= &msg
,
2404 .callback_ops
= &nfs4_close_ops
,
2405 .workqueue
= nfsiod_workqueue
,
2406 .flags
= RPC_TASK_ASYNC
,
2408 int status
= -ENOMEM
;
2410 calldata
= kzalloc(sizeof(*calldata
), gfp_mask
);
2411 if (calldata
== NULL
)
2413 nfs41_init_sequence(&calldata
->arg
.seq_args
, &calldata
->res
.seq_res
, 1);
2414 calldata
->inode
= state
->inode
;
2415 calldata
->state
= state
;
2416 calldata
->arg
.fh
= NFS_FH(state
->inode
);
2417 calldata
->arg
.stateid
= &state
->open_stateid
;
2418 /* Serialization for the sequence id */
2419 calldata
->arg
.seqid
= nfs_alloc_seqid(&state
->owner
->so_seqid
, gfp_mask
);
2420 if (calldata
->arg
.seqid
== NULL
)
2421 goto out_free_calldata
;
2422 calldata
->arg
.fmode
= 0;
2423 calldata
->arg
.bitmask
= server
->cache_consistency_bitmask
;
2424 calldata
->res
.fattr
= &calldata
->fattr
;
2425 calldata
->res
.seqid
= calldata
->arg
.seqid
;
2426 calldata
->res
.server
= server
;
2427 calldata
->roc
= pnfs_roc(state
->inode
);
2428 nfs_sb_active(calldata
->inode
->i_sb
);
2430 msg
.rpc_argp
= &calldata
->arg
;
2431 msg
.rpc_resp
= &calldata
->res
;
2432 task_setup_data
.callback_data
= calldata
;
2433 task
= rpc_run_task(&task_setup_data
);
2435 return PTR_ERR(task
);
2438 status
= rpc_wait_for_completion_task(task
);
2444 nfs4_put_open_state(state
);
2445 nfs4_put_state_owner(sp
);
2449 static struct inode
*
2450 nfs4_atomic_open(struct inode
*dir
, struct nfs_open_context
*ctx
, int open_flags
, struct iattr
*attr
)
2452 struct nfs4_state
*state
;
2454 /* Protect against concurrent sillydeletes */
2455 state
= nfs4_do_open(dir
, ctx
->dentry
, ctx
->mode
, open_flags
, attr
,
2456 ctx
->cred
, &ctx
->mdsthreshold
);
2458 return ERR_CAST(state
);
2460 return igrab(state
->inode
);
2463 static void nfs4_close_context(struct nfs_open_context
*ctx
, int is_sync
)
2465 if (ctx
->state
== NULL
)
2468 nfs4_close_sync(ctx
->state
, ctx
->mode
);
2470 nfs4_close_state(ctx
->state
, ctx
->mode
);
2473 static int _nfs4_server_capabilities(struct nfs_server
*server
, struct nfs_fh
*fhandle
)
2475 struct nfs4_server_caps_arg args
= {
2478 struct nfs4_server_caps_res res
= {};
2479 struct rpc_message msg
= {
2480 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SERVER_CAPS
],
2486 status
= nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
2488 memcpy(server
->attr_bitmask
, res
.attr_bitmask
, sizeof(server
->attr_bitmask
));
2489 server
->caps
&= ~(NFS_CAP_ACLS
|NFS_CAP_HARDLINKS
|
2490 NFS_CAP_SYMLINKS
|NFS_CAP_FILEID
|
2491 NFS_CAP_MODE
|NFS_CAP_NLINK
|NFS_CAP_OWNER
|
2492 NFS_CAP_OWNER_GROUP
|NFS_CAP_ATIME
|
2493 NFS_CAP_CTIME
|NFS_CAP_MTIME
);
2494 if (res
.attr_bitmask
[0] & FATTR4_WORD0_ACL
)
2495 server
->caps
|= NFS_CAP_ACLS
;
2496 if (res
.has_links
!= 0)
2497 server
->caps
|= NFS_CAP_HARDLINKS
;
2498 if (res
.has_symlinks
!= 0)
2499 server
->caps
|= NFS_CAP_SYMLINKS
;
2500 if (res
.attr_bitmask
[0] & FATTR4_WORD0_FILEID
)
2501 server
->caps
|= NFS_CAP_FILEID
;
2502 if (res
.attr_bitmask
[1] & FATTR4_WORD1_MODE
)
2503 server
->caps
|= NFS_CAP_MODE
;
2504 if (res
.attr_bitmask
[1] & FATTR4_WORD1_NUMLINKS
)
2505 server
->caps
|= NFS_CAP_NLINK
;
2506 if (res
.attr_bitmask
[1] & FATTR4_WORD1_OWNER
)
2507 server
->caps
|= NFS_CAP_OWNER
;
2508 if (res
.attr_bitmask
[1] & FATTR4_WORD1_OWNER_GROUP
)
2509 server
->caps
|= NFS_CAP_OWNER_GROUP
;
2510 if (res
.attr_bitmask
[1] & FATTR4_WORD1_TIME_ACCESS
)
2511 server
->caps
|= NFS_CAP_ATIME
;
2512 if (res
.attr_bitmask
[1] & FATTR4_WORD1_TIME_METADATA
)
2513 server
->caps
|= NFS_CAP_CTIME
;
2514 if (res
.attr_bitmask
[1] & FATTR4_WORD1_TIME_MODIFY
)
2515 server
->caps
|= NFS_CAP_MTIME
;
2517 memcpy(server
->cache_consistency_bitmask
, res
.attr_bitmask
, sizeof(server
->cache_consistency_bitmask
));
2518 server
->cache_consistency_bitmask
[0] &= FATTR4_WORD0_CHANGE
|FATTR4_WORD0_SIZE
;
2519 server
->cache_consistency_bitmask
[1] &= FATTR4_WORD1_TIME_METADATA
|FATTR4_WORD1_TIME_MODIFY
;
2520 server
->acl_bitmask
= res
.acl_bitmask
;
2521 server
->fh_expire_type
= res
.fh_expire_type
;
2527 int nfs4_server_capabilities(struct nfs_server
*server
, struct nfs_fh
*fhandle
)
2529 struct nfs4_exception exception
= { };
2532 err
= nfs4_handle_exception(server
,
2533 _nfs4_server_capabilities(server
, fhandle
),
2535 } while (exception
.retry
);
2539 static int _nfs4_lookup_root(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
2540 struct nfs_fsinfo
*info
)
2542 struct nfs4_lookup_root_arg args
= {
2543 .bitmask
= nfs4_fattr_bitmap
,
2545 struct nfs4_lookup_res res
= {
2547 .fattr
= info
->fattr
,
2550 struct rpc_message msg
= {
2551 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOOKUP_ROOT
],
2556 nfs_fattr_init(info
->fattr
);
2557 return nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
2560 static int nfs4_lookup_root(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
2561 struct nfs_fsinfo
*info
)
2563 struct nfs4_exception exception
= { };
2566 err
= _nfs4_lookup_root(server
, fhandle
, info
);
2569 case -NFS4ERR_WRONGSEC
:
2572 err
= nfs4_handle_exception(server
, err
, &exception
);
2574 } while (exception
.retry
);
2579 static int nfs4_lookup_root_sec(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
2580 struct nfs_fsinfo
*info
, rpc_authflavor_t flavor
)
2582 struct rpc_auth
*auth
;
2585 auth
= rpcauth_create(flavor
, server
->client
);
2590 ret
= nfs4_lookup_root(server
, fhandle
, info
);
2596 * Retry pseudoroot lookup with various security flavors. We do this when:
2598 * NFSv4.0: the PUTROOTFH operation returns NFS4ERR_WRONGSEC
2599 * NFSv4.1: the server does not support the SECINFO_NO_NAME operation
2601 * Returns zero on success, or a negative NFS4ERR value, or a
2602 * negative errno value.
2604 static int nfs4_find_root_sec(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
2605 struct nfs_fsinfo
*info
)
2607 /* Per 3530bis 15.33.5 */
2608 static const rpc_authflavor_t flav_array
[] = {
2612 RPC_AUTH_UNIX
, /* courtesy */
2615 int status
= -EPERM
;
2618 for (i
= 0; i
< ARRAY_SIZE(flav_array
); i
++) {
2619 status
= nfs4_lookup_root_sec(server
, fhandle
, info
, flav_array
[i
]);
2620 if (status
== -NFS4ERR_WRONGSEC
|| status
== -EACCES
)
2626 * -EACCESS could mean that the user doesn't have correct permissions
2627 * to access the mount. It could also mean that we tried to mount
2628 * with a gss auth flavor, but rpc.gssd isn't running. Either way,
2629 * existing mount programs don't handle -EACCES very well so it should
2630 * be mapped to -EPERM instead.
2632 if (status
== -EACCES
)
2637 static int nfs4_do_find_root_sec(struct nfs_server
*server
,
2638 struct nfs_fh
*fhandle
, struct nfs_fsinfo
*info
)
2640 int mv
= server
->nfs_client
->cl_minorversion
;
2641 return nfs_v4_minor_ops
[mv
]->find_root_sec(server
, fhandle
, info
);
2645 * nfs4_proc_get_rootfh - get file handle for server's pseudoroot
2646 * @server: initialized nfs_server handle
2647 * @fhandle: we fill in the pseudo-fs root file handle
2648 * @info: we fill in an FSINFO struct
2650 * Returns zero on success, or a negative errno.
2652 int nfs4_proc_get_rootfh(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
2653 struct nfs_fsinfo
*info
)
2657 status
= nfs4_lookup_root(server
, fhandle
, info
);
2658 if ((status
== -NFS4ERR_WRONGSEC
) &&
2659 !(server
->flags
& NFS_MOUNT_SECFLAVOUR
))
2660 status
= nfs4_do_find_root_sec(server
, fhandle
, info
);
2663 status
= nfs4_server_capabilities(server
, fhandle
);
2665 status
= nfs4_do_fsinfo(server
, fhandle
, info
);
2667 return nfs4_map_errors(status
);
2670 static int nfs4_proc_get_root(struct nfs_server
*server
, struct nfs_fh
*mntfh
,
2671 struct nfs_fsinfo
*info
)
2674 struct nfs_fattr
*fattr
= info
->fattr
;
2676 error
= nfs4_server_capabilities(server
, mntfh
);
2678 dprintk("nfs4_get_root: getcaps error = %d\n", -error
);
2682 error
= nfs4_proc_getattr(server
, mntfh
, fattr
);
2684 dprintk("nfs4_get_root: getattr error = %d\n", -error
);
2688 if (fattr
->valid
& NFS_ATTR_FATTR_FSID
&&
2689 !nfs_fsid_equal(&server
->fsid
, &fattr
->fsid
))
2690 memcpy(&server
->fsid
, &fattr
->fsid
, sizeof(server
->fsid
));
2696 * Get locations and (maybe) other attributes of a referral.
2697 * Note that we'll actually follow the referral later when
2698 * we detect fsid mismatch in inode revalidation
2700 static int nfs4_get_referral(struct rpc_clnt
*client
, struct inode
*dir
,
2701 const struct qstr
*name
, struct nfs_fattr
*fattr
,
2702 struct nfs_fh
*fhandle
)
2704 int status
= -ENOMEM
;
2705 struct page
*page
= NULL
;
2706 struct nfs4_fs_locations
*locations
= NULL
;
2708 page
= alloc_page(GFP_KERNEL
);
2711 locations
= kmalloc(sizeof(struct nfs4_fs_locations
), GFP_KERNEL
);
2712 if (locations
== NULL
)
2715 status
= nfs4_proc_fs_locations(client
, dir
, name
, locations
, page
);
2718 /* Make sure server returned a different fsid for the referral */
2719 if (nfs_fsid_equal(&NFS_SERVER(dir
)->fsid
, &locations
->fattr
.fsid
)) {
2720 dprintk("%s: server did not return a different fsid for"
2721 " a referral at %s\n", __func__
, name
->name
);
2725 /* Fixup attributes for the nfs_lookup() call to nfs_fhget() */
2726 nfs_fixup_referral_attributes(&locations
->fattr
);
2728 /* replace the lookup nfs_fattr with the locations nfs_fattr */
2729 memcpy(fattr
, &locations
->fattr
, sizeof(struct nfs_fattr
));
2730 memset(fhandle
, 0, sizeof(struct nfs_fh
));
2738 static int _nfs4_proc_getattr(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fattr
*fattr
)
2740 struct nfs4_getattr_arg args
= {
2742 .bitmask
= server
->attr_bitmask
,
2744 struct nfs4_getattr_res res
= {
2748 struct rpc_message msg
= {
2749 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GETATTR
],
2754 nfs_fattr_init(fattr
);
2755 return nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
2758 static int nfs4_proc_getattr(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fattr
*fattr
)
2760 struct nfs4_exception exception
= { };
2763 err
= nfs4_handle_exception(server
,
2764 _nfs4_proc_getattr(server
, fhandle
, fattr
),
2766 } while (exception
.retry
);
2771 * The file is not closed if it is opened due to the a request to change
2772 * the size of the file. The open call will not be needed once the
2773 * VFS layer lookup-intents are implemented.
2775 * Close is called when the inode is destroyed.
2776 * If we haven't opened the file for O_WRONLY, we
2777 * need to in the size_change case to obtain a stateid.
2780 * Because OPEN is always done by name in nfsv4, it is
2781 * possible that we opened a different file by the same
2782 * name. We can recognize this race condition, but we
2783 * can't do anything about it besides returning an error.
2785 * This will be fixed with VFS changes (lookup-intent).
2788 nfs4_proc_setattr(struct dentry
*dentry
, struct nfs_fattr
*fattr
,
2789 struct iattr
*sattr
)
2791 struct inode
*inode
= dentry
->d_inode
;
2792 struct rpc_cred
*cred
= NULL
;
2793 struct nfs4_state
*state
= NULL
;
2796 if (pnfs_ld_layoutret_on_setattr(inode
))
2797 pnfs_commit_and_return_layout(inode
);
2799 nfs_fattr_init(fattr
);
2801 /* Deal with open(O_TRUNC) */
2802 if (sattr
->ia_valid
& ATTR_OPEN
)
2803 sattr
->ia_valid
&= ~(ATTR_MTIME
|ATTR_CTIME
|ATTR_OPEN
);
2805 /* Optimization: if the end result is no change, don't RPC */
2806 if ((sattr
->ia_valid
& ~(ATTR_FILE
)) == 0)
2809 /* Search for an existing open(O_WRITE) file */
2810 if (sattr
->ia_valid
& ATTR_FILE
) {
2811 struct nfs_open_context
*ctx
;
2813 ctx
= nfs_file_open_context(sattr
->ia_file
);
2820 status
= nfs4_do_setattr(inode
, cred
, fattr
, sattr
, state
);
2822 nfs_setattr_update_inode(inode
, sattr
);
2826 static int _nfs4_proc_lookup(struct rpc_clnt
*clnt
, struct inode
*dir
,
2827 const struct qstr
*name
, struct nfs_fh
*fhandle
,
2828 struct nfs_fattr
*fattr
)
2830 struct nfs_server
*server
= NFS_SERVER(dir
);
2832 struct nfs4_lookup_arg args
= {
2833 .bitmask
= server
->attr_bitmask
,
2834 .dir_fh
= NFS_FH(dir
),
2837 struct nfs4_lookup_res res
= {
2842 struct rpc_message msg
= {
2843 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOOKUP
],
2848 nfs_fattr_init(fattr
);
2850 dprintk("NFS call lookup %s\n", name
->name
);
2851 status
= nfs4_call_sync(clnt
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
2852 dprintk("NFS reply lookup: %d\n", status
);
2856 static void nfs_fixup_secinfo_attributes(struct nfs_fattr
*fattr
)
2858 fattr
->valid
|= NFS_ATTR_FATTR_TYPE
| NFS_ATTR_FATTR_MODE
|
2859 NFS_ATTR_FATTR_NLINK
| NFS_ATTR_FATTR_MOUNTPOINT
;
2860 fattr
->mode
= S_IFDIR
| S_IRUGO
| S_IXUGO
;
2864 static int nfs4_proc_lookup_common(struct rpc_clnt
**clnt
, struct inode
*dir
,
2865 struct qstr
*name
, struct nfs_fh
*fhandle
,
2866 struct nfs_fattr
*fattr
)
2868 struct nfs4_exception exception
= { };
2869 struct rpc_clnt
*client
= *clnt
;
2872 err
= _nfs4_proc_lookup(client
, dir
, name
, fhandle
, fattr
);
2874 case -NFS4ERR_BADNAME
:
2877 case -NFS4ERR_MOVED
:
2878 err
= nfs4_get_referral(client
, dir
, name
, fattr
, fhandle
);
2880 case -NFS4ERR_WRONGSEC
:
2882 if (client
!= *clnt
)
2885 client
= nfs4_create_sec_client(client
, dir
, name
);
2887 return PTR_ERR(client
);
2889 exception
.retry
= 1;
2892 err
= nfs4_handle_exception(NFS_SERVER(dir
), err
, &exception
);
2894 } while (exception
.retry
);
2899 else if (client
!= *clnt
)
2900 rpc_shutdown_client(client
);
2905 static int nfs4_proc_lookup(struct inode
*dir
, struct qstr
*name
,
2906 struct nfs_fh
*fhandle
, struct nfs_fattr
*fattr
)
2909 struct rpc_clnt
*client
= NFS_CLIENT(dir
);
2911 status
= nfs4_proc_lookup_common(&client
, dir
, name
, fhandle
, fattr
);
2912 if (client
!= NFS_CLIENT(dir
)) {
2913 rpc_shutdown_client(client
);
2914 nfs_fixup_secinfo_attributes(fattr
);
2920 nfs4_proc_lookup_mountpoint(struct inode
*dir
, struct qstr
*name
,
2921 struct nfs_fh
*fhandle
, struct nfs_fattr
*fattr
)
2924 struct rpc_clnt
*client
= rpc_clone_client(NFS_CLIENT(dir
));
2926 status
= nfs4_proc_lookup_common(&client
, dir
, name
, fhandle
, fattr
);
2928 rpc_shutdown_client(client
);
2929 return ERR_PTR(status
);
2934 static int _nfs4_proc_access(struct inode
*inode
, struct nfs_access_entry
*entry
)
2936 struct nfs_server
*server
= NFS_SERVER(inode
);
2937 struct nfs4_accessargs args
= {
2938 .fh
= NFS_FH(inode
),
2939 .bitmask
= server
->cache_consistency_bitmask
,
2941 struct nfs4_accessres res
= {
2944 struct rpc_message msg
= {
2945 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_ACCESS
],
2948 .rpc_cred
= entry
->cred
,
2950 int mode
= entry
->mask
;
2954 * Determine which access bits we want to ask for...
2956 if (mode
& MAY_READ
)
2957 args
.access
|= NFS4_ACCESS_READ
;
2958 if (S_ISDIR(inode
->i_mode
)) {
2959 if (mode
& MAY_WRITE
)
2960 args
.access
|= NFS4_ACCESS_MODIFY
| NFS4_ACCESS_EXTEND
| NFS4_ACCESS_DELETE
;
2961 if (mode
& MAY_EXEC
)
2962 args
.access
|= NFS4_ACCESS_LOOKUP
;
2964 if (mode
& MAY_WRITE
)
2965 args
.access
|= NFS4_ACCESS_MODIFY
| NFS4_ACCESS_EXTEND
;
2966 if (mode
& MAY_EXEC
)
2967 args
.access
|= NFS4_ACCESS_EXECUTE
;
2970 res
.fattr
= nfs_alloc_fattr();
2971 if (res
.fattr
== NULL
)
2974 status
= nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
2976 nfs_access_set_mask(entry
, res
.access
);
2977 nfs_refresh_inode(inode
, res
.fattr
);
2979 nfs_free_fattr(res
.fattr
);
2983 static int nfs4_proc_access(struct inode
*inode
, struct nfs_access_entry
*entry
)
2985 struct nfs4_exception exception
= { };
2988 err
= nfs4_handle_exception(NFS_SERVER(inode
),
2989 _nfs4_proc_access(inode
, entry
),
2991 } while (exception
.retry
);
2996 * TODO: For the time being, we don't try to get any attributes
2997 * along with any of the zero-copy operations READ, READDIR,
3000 * In the case of the first three, we want to put the GETATTR
3001 * after the read-type operation -- this is because it is hard
3002 * to predict the length of a GETATTR response in v4, and thus
3003 * align the READ data correctly. This means that the GETATTR
3004 * may end up partially falling into the page cache, and we should
3005 * shift it into the 'tail' of the xdr_buf before processing.
3006 * To do this efficiently, we need to know the total length
3007 * of data received, which doesn't seem to be available outside
3010 * In the case of WRITE, we also want to put the GETATTR after
3011 * the operation -- in this case because we want to make sure
3012 * we get the post-operation mtime and size.
3014 * Both of these changes to the XDR layer would in fact be quite
3015 * minor, but I decided to leave them for a subsequent patch.
3017 static int _nfs4_proc_readlink(struct inode
*inode
, struct page
*page
,
3018 unsigned int pgbase
, unsigned int pglen
)
3020 struct nfs4_readlink args
= {
3021 .fh
= NFS_FH(inode
),
3026 struct nfs4_readlink_res res
;
3027 struct rpc_message msg
= {
3028 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_READLINK
],
3033 return nfs4_call_sync(NFS_SERVER(inode
)->client
, NFS_SERVER(inode
), &msg
, &args
.seq_args
, &res
.seq_res
, 0);
3036 static int nfs4_proc_readlink(struct inode
*inode
, struct page
*page
,
3037 unsigned int pgbase
, unsigned int pglen
)
3039 struct nfs4_exception exception
= { };
3042 err
= nfs4_handle_exception(NFS_SERVER(inode
),
3043 _nfs4_proc_readlink(inode
, page
, pgbase
, pglen
),
3045 } while (exception
.retry
);
3050 * This is just for mknod. open(O_CREAT) will always do ->open_context().
3053 nfs4_proc_create(struct inode
*dir
, struct dentry
*dentry
, struct iattr
*sattr
,
3056 struct nfs_open_context
*ctx
;
3057 struct nfs4_state
*state
;
3060 ctx
= alloc_nfs_open_context(dentry
, FMODE_READ
);
3062 return PTR_ERR(ctx
);
3064 sattr
->ia_mode
&= ~current_umask();
3065 state
= nfs4_do_open(dir
, dentry
, ctx
->mode
,
3066 flags
, sattr
, ctx
->cred
,
3067 &ctx
->mdsthreshold
);
3069 if (IS_ERR(state
)) {
3070 status
= PTR_ERR(state
);
3073 d_add(dentry
, igrab(state
->inode
));
3074 nfs_set_verifier(dentry
, nfs_save_change_attribute(dir
));
3077 put_nfs_open_context(ctx
);
3081 static int _nfs4_proc_remove(struct inode
*dir
, struct qstr
*name
)
3083 struct nfs_server
*server
= NFS_SERVER(dir
);
3084 struct nfs_removeargs args
= {
3088 struct nfs_removeres res
= {
3091 struct rpc_message msg
= {
3092 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_REMOVE
],
3098 status
= nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 1);
3100 update_changeattr(dir
, &res
.cinfo
);
3104 static int nfs4_proc_remove(struct inode
*dir
, struct qstr
*name
)
3106 struct nfs4_exception exception
= { };
3109 err
= nfs4_handle_exception(NFS_SERVER(dir
),
3110 _nfs4_proc_remove(dir
, name
),
3112 } while (exception
.retry
);
3116 static void nfs4_proc_unlink_setup(struct rpc_message
*msg
, struct inode
*dir
)
3118 struct nfs_server
*server
= NFS_SERVER(dir
);
3119 struct nfs_removeargs
*args
= msg
->rpc_argp
;
3120 struct nfs_removeres
*res
= msg
->rpc_resp
;
3122 res
->server
= server
;
3123 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_REMOVE
];
3124 nfs41_init_sequence(&args
->seq_args
, &res
->seq_res
, 1);
3127 static void nfs4_proc_unlink_rpc_prepare(struct rpc_task
*task
, struct nfs_unlinkdata
*data
)
3129 nfs4_setup_sequence(NFS_SERVER(data
->dir
),
3130 &data
->args
.seq_args
,
3135 static int nfs4_proc_unlink_done(struct rpc_task
*task
, struct inode
*dir
)
3137 struct nfs_removeres
*res
= task
->tk_msg
.rpc_resp
;
3139 if (!nfs4_sequence_done(task
, &res
->seq_res
))
3141 if (nfs4_async_handle_error(task
, res
->server
, NULL
) == -EAGAIN
)
3143 update_changeattr(dir
, &res
->cinfo
);
3147 static void nfs4_proc_rename_setup(struct rpc_message
*msg
, struct inode
*dir
)
3149 struct nfs_server
*server
= NFS_SERVER(dir
);
3150 struct nfs_renameargs
*arg
= msg
->rpc_argp
;
3151 struct nfs_renameres
*res
= msg
->rpc_resp
;
3153 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RENAME
];
3154 res
->server
= server
;
3155 nfs41_init_sequence(&arg
->seq_args
, &res
->seq_res
, 1);
3158 static void nfs4_proc_rename_rpc_prepare(struct rpc_task
*task
, struct nfs_renamedata
*data
)
3160 nfs4_setup_sequence(NFS_SERVER(data
->old_dir
),
3161 &data
->args
.seq_args
,
3166 static int nfs4_proc_rename_done(struct rpc_task
*task
, struct inode
*old_dir
,
3167 struct inode
*new_dir
)
3169 struct nfs_renameres
*res
= task
->tk_msg
.rpc_resp
;
3171 if (!nfs4_sequence_done(task
, &res
->seq_res
))
3173 if (nfs4_async_handle_error(task
, res
->server
, NULL
) == -EAGAIN
)
3176 update_changeattr(old_dir
, &res
->old_cinfo
);
3177 update_changeattr(new_dir
, &res
->new_cinfo
);
3181 static int _nfs4_proc_rename(struct inode
*old_dir
, struct qstr
*old_name
,
3182 struct inode
*new_dir
, struct qstr
*new_name
)
3184 struct nfs_server
*server
= NFS_SERVER(old_dir
);
3185 struct nfs_renameargs arg
= {
3186 .old_dir
= NFS_FH(old_dir
),
3187 .new_dir
= NFS_FH(new_dir
),
3188 .old_name
= old_name
,
3189 .new_name
= new_name
,
3191 struct nfs_renameres res
= {
3194 struct rpc_message msg
= {
3195 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RENAME
],
3199 int status
= -ENOMEM
;
3201 status
= nfs4_call_sync(server
->client
, server
, &msg
, &arg
.seq_args
, &res
.seq_res
, 1);
3203 update_changeattr(old_dir
, &res
.old_cinfo
);
3204 update_changeattr(new_dir
, &res
.new_cinfo
);
3209 static int nfs4_proc_rename(struct inode
*old_dir
, struct qstr
*old_name
,
3210 struct inode
*new_dir
, struct qstr
*new_name
)
3212 struct nfs4_exception exception
= { };
3215 err
= nfs4_handle_exception(NFS_SERVER(old_dir
),
3216 _nfs4_proc_rename(old_dir
, old_name
,
3219 } while (exception
.retry
);
3223 static int _nfs4_proc_link(struct inode
*inode
, struct inode
*dir
, struct qstr
*name
)
3225 struct nfs_server
*server
= NFS_SERVER(inode
);
3226 struct nfs4_link_arg arg
= {
3227 .fh
= NFS_FH(inode
),
3228 .dir_fh
= NFS_FH(dir
),
3230 .bitmask
= server
->attr_bitmask
,
3232 struct nfs4_link_res res
= {
3235 struct rpc_message msg
= {
3236 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LINK
],
3240 int status
= -ENOMEM
;
3242 res
.fattr
= nfs_alloc_fattr();
3243 if (res
.fattr
== NULL
)
3246 status
= nfs4_call_sync(server
->client
, server
, &msg
, &arg
.seq_args
, &res
.seq_res
, 1);
3248 update_changeattr(dir
, &res
.cinfo
);
3249 nfs_post_op_update_inode(inode
, res
.fattr
);
3252 nfs_free_fattr(res
.fattr
);
3256 static int nfs4_proc_link(struct inode
*inode
, struct inode
*dir
, struct qstr
*name
)
3258 struct nfs4_exception exception
= { };
3261 err
= nfs4_handle_exception(NFS_SERVER(inode
),
3262 _nfs4_proc_link(inode
, dir
, name
),
3264 } while (exception
.retry
);
3268 struct nfs4_createdata
{
3269 struct rpc_message msg
;
3270 struct nfs4_create_arg arg
;
3271 struct nfs4_create_res res
;
3273 struct nfs_fattr fattr
;
3276 static struct nfs4_createdata
*nfs4_alloc_createdata(struct inode
*dir
,
3277 struct qstr
*name
, struct iattr
*sattr
, u32 ftype
)
3279 struct nfs4_createdata
*data
;
3281 data
= kzalloc(sizeof(*data
), GFP_KERNEL
);
3283 struct nfs_server
*server
= NFS_SERVER(dir
);
3285 data
->msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_CREATE
];
3286 data
->msg
.rpc_argp
= &data
->arg
;
3287 data
->msg
.rpc_resp
= &data
->res
;
3288 data
->arg
.dir_fh
= NFS_FH(dir
);
3289 data
->arg
.server
= server
;
3290 data
->arg
.name
= name
;
3291 data
->arg
.attrs
= sattr
;
3292 data
->arg
.ftype
= ftype
;
3293 data
->arg
.bitmask
= server
->attr_bitmask
;
3294 data
->res
.server
= server
;
3295 data
->res
.fh
= &data
->fh
;
3296 data
->res
.fattr
= &data
->fattr
;
3297 nfs_fattr_init(data
->res
.fattr
);
3302 static int nfs4_do_create(struct inode
*dir
, struct dentry
*dentry
, struct nfs4_createdata
*data
)
3304 int status
= nfs4_call_sync(NFS_SERVER(dir
)->client
, NFS_SERVER(dir
), &data
->msg
,
3305 &data
->arg
.seq_args
, &data
->res
.seq_res
, 1);
3307 update_changeattr(dir
, &data
->res
.dir_cinfo
);
3308 status
= nfs_instantiate(dentry
, data
->res
.fh
, data
->res
.fattr
);
3313 static void nfs4_free_createdata(struct nfs4_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_createdata
*data
;
3322 int status
= -ENAMETOOLONG
;
3324 if (len
> NFS4_MAXPATHLEN
)
3328 data
= nfs4_alloc_createdata(dir
, &dentry
->d_name
, sattr
, NF4LNK
);
3332 data
->msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SYMLINK
];
3333 data
->arg
.u
.symlink
.pages
= &page
;
3334 data
->arg
.u
.symlink
.len
= len
;
3336 status
= nfs4_do_create(dir
, dentry
, data
);
3338 nfs4_free_createdata(data
);
3343 static int nfs4_proc_symlink(struct inode
*dir
, struct dentry
*dentry
,
3344 struct page
*page
, unsigned int len
, struct iattr
*sattr
)
3346 struct nfs4_exception exception
= { };
3349 err
= nfs4_handle_exception(NFS_SERVER(dir
),
3350 _nfs4_proc_symlink(dir
, dentry
, page
,
3353 } while (exception
.retry
);
3357 static int _nfs4_proc_mkdir(struct inode
*dir
, struct dentry
*dentry
,
3358 struct iattr
*sattr
)
3360 struct nfs4_createdata
*data
;
3361 int status
= -ENOMEM
;
3363 data
= nfs4_alloc_createdata(dir
, &dentry
->d_name
, sattr
, NF4DIR
);
3367 status
= nfs4_do_create(dir
, dentry
, data
);
3369 nfs4_free_createdata(data
);
3374 static int nfs4_proc_mkdir(struct inode
*dir
, struct dentry
*dentry
,
3375 struct iattr
*sattr
)
3377 struct nfs4_exception exception
= { };
3380 sattr
->ia_mode
&= ~current_umask();
3382 err
= nfs4_handle_exception(NFS_SERVER(dir
),
3383 _nfs4_proc_mkdir(dir
, dentry
, sattr
),
3385 } while (exception
.retry
);
3389 static int _nfs4_proc_readdir(struct dentry
*dentry
, struct rpc_cred
*cred
,
3390 u64 cookie
, struct page
**pages
, unsigned int count
, int plus
)
3392 struct inode
*dir
= dentry
->d_inode
;
3393 struct nfs4_readdir_arg args
= {
3398 .bitmask
= NFS_SERVER(dentry
->d_inode
)->attr_bitmask
,
3401 struct nfs4_readdir_res res
;
3402 struct rpc_message msg
= {
3403 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_READDIR
],
3410 dprintk("%s: dentry = %s/%s, cookie = %Lu\n", __func__
,
3411 dentry
->d_parent
->d_name
.name
,
3412 dentry
->d_name
.name
,
3413 (unsigned long long)cookie
);
3414 nfs4_setup_readdir(cookie
, NFS_I(dir
)->cookieverf
, dentry
, &args
);
3415 res
.pgbase
= args
.pgbase
;
3416 status
= nfs4_call_sync(NFS_SERVER(dir
)->client
, NFS_SERVER(dir
), &msg
, &args
.seq_args
, &res
.seq_res
, 0);
3418 memcpy(NFS_I(dir
)->cookieverf
, res
.verifier
.data
, NFS4_VERIFIER_SIZE
);
3419 status
+= args
.pgbase
;
3422 nfs_invalidate_atime(dir
);
3424 dprintk("%s: returns %d\n", __func__
, status
);
3428 static int nfs4_proc_readdir(struct dentry
*dentry
, struct rpc_cred
*cred
,
3429 u64 cookie
, struct page
**pages
, unsigned int count
, int plus
)
3431 struct nfs4_exception exception
= { };
3434 err
= nfs4_handle_exception(NFS_SERVER(dentry
->d_inode
),
3435 _nfs4_proc_readdir(dentry
, cred
, cookie
,
3436 pages
, count
, plus
),
3438 } while (exception
.retry
);
3442 static int _nfs4_proc_mknod(struct inode
*dir
, struct dentry
*dentry
,
3443 struct iattr
*sattr
, dev_t rdev
)
3445 struct nfs4_createdata
*data
;
3446 int mode
= sattr
->ia_mode
;
3447 int status
= -ENOMEM
;
3449 data
= nfs4_alloc_createdata(dir
, &dentry
->d_name
, sattr
, NF4SOCK
);
3454 data
->arg
.ftype
= NF4FIFO
;
3455 else if (S_ISBLK(mode
)) {
3456 data
->arg
.ftype
= NF4BLK
;
3457 data
->arg
.u
.device
.specdata1
= MAJOR(rdev
);
3458 data
->arg
.u
.device
.specdata2
= MINOR(rdev
);
3460 else if (S_ISCHR(mode
)) {
3461 data
->arg
.ftype
= NF4CHR
;
3462 data
->arg
.u
.device
.specdata1
= MAJOR(rdev
);
3463 data
->arg
.u
.device
.specdata2
= MINOR(rdev
);
3464 } else if (!S_ISSOCK(mode
)) {
3469 status
= nfs4_do_create(dir
, dentry
, data
);
3471 nfs4_free_createdata(data
);
3476 static int nfs4_proc_mknod(struct inode
*dir
, struct dentry
*dentry
,
3477 struct iattr
*sattr
, dev_t rdev
)
3479 struct nfs4_exception exception
= { };
3482 sattr
->ia_mode
&= ~current_umask();
3484 err
= nfs4_handle_exception(NFS_SERVER(dir
),
3485 _nfs4_proc_mknod(dir
, dentry
, sattr
, rdev
),
3487 } while (exception
.retry
);
3491 static int _nfs4_proc_statfs(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
3492 struct nfs_fsstat
*fsstat
)
3494 struct nfs4_statfs_arg args
= {
3496 .bitmask
= server
->attr_bitmask
,
3498 struct nfs4_statfs_res res
= {
3501 struct rpc_message msg
= {
3502 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_STATFS
],
3507 nfs_fattr_init(fsstat
->fattr
);
3508 return nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
3511 static int nfs4_proc_statfs(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fsstat
*fsstat
)
3513 struct nfs4_exception exception
= { };
3516 err
= nfs4_handle_exception(server
,
3517 _nfs4_proc_statfs(server
, fhandle
, fsstat
),
3519 } while (exception
.retry
);
3523 static int _nfs4_do_fsinfo(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
3524 struct nfs_fsinfo
*fsinfo
)
3526 struct nfs4_fsinfo_arg args
= {
3528 .bitmask
= server
->attr_bitmask
,
3530 struct nfs4_fsinfo_res res
= {
3533 struct rpc_message msg
= {
3534 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_FSINFO
],
3539 return nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
3542 static int nfs4_do_fsinfo(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fsinfo
*fsinfo
)
3544 struct nfs4_exception exception
= { };
3545 unsigned long now
= jiffies
;
3549 err
= _nfs4_do_fsinfo(server
, fhandle
, fsinfo
);
3551 struct nfs_client
*clp
= server
->nfs_client
;
3553 spin_lock(&clp
->cl_lock
);
3554 clp
->cl_lease_time
= fsinfo
->lease_time
* HZ
;
3555 clp
->cl_last_renewal
= now
;
3556 spin_unlock(&clp
->cl_lock
);
3559 err
= nfs4_handle_exception(server
, err
, &exception
);
3560 } while (exception
.retry
);
3564 static int nfs4_proc_fsinfo(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fsinfo
*fsinfo
)
3568 nfs_fattr_init(fsinfo
->fattr
);
3569 error
= nfs4_do_fsinfo(server
, fhandle
, fsinfo
);
3571 /* block layout checks this! */
3572 server
->pnfs_blksize
= fsinfo
->blksize
;
3573 set_pnfs_layoutdriver(server
, fhandle
, fsinfo
->layouttype
);
3579 static int _nfs4_proc_pathconf(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
3580 struct nfs_pathconf
*pathconf
)
3582 struct nfs4_pathconf_arg args
= {
3584 .bitmask
= server
->attr_bitmask
,
3586 struct nfs4_pathconf_res res
= {
3587 .pathconf
= pathconf
,
3589 struct rpc_message msg
= {
3590 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_PATHCONF
],
3595 /* None of the pathconf attributes are mandatory to implement */
3596 if ((args
.bitmask
[0] & nfs4_pathconf_bitmap
[0]) == 0) {
3597 memset(pathconf
, 0, sizeof(*pathconf
));
3601 nfs_fattr_init(pathconf
->fattr
);
3602 return nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
3605 static int nfs4_proc_pathconf(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
3606 struct nfs_pathconf
*pathconf
)
3608 struct nfs4_exception exception
= { };
3612 err
= nfs4_handle_exception(server
,
3613 _nfs4_proc_pathconf(server
, fhandle
, pathconf
),
3615 } while (exception
.retry
);
3619 int nfs4_set_rw_stateid(nfs4_stateid
*stateid
,
3620 const struct nfs_open_context
*ctx
,
3621 const struct nfs_lock_context
*l_ctx
,
3624 const struct nfs_lockowner
*lockowner
= NULL
;
3627 lockowner
= &l_ctx
->lockowner
;
3628 return nfs4_select_rw_stateid(stateid
, ctx
->state
, fmode
, lockowner
);
3630 EXPORT_SYMBOL_GPL(nfs4_set_rw_stateid
);
3632 static bool nfs4_stateid_is_current(nfs4_stateid
*stateid
,
3633 const struct nfs_open_context
*ctx
,
3634 const struct nfs_lock_context
*l_ctx
,
3637 nfs4_stateid current_stateid
;
3639 /* If the current stateid represents a lost lock, then exit */
3640 if (nfs4_set_rw_stateid(¤t_stateid
, ctx
, l_ctx
, fmode
) == -EIO
)
3642 return nfs4_stateid_match(stateid
, ¤t_stateid
);
3645 static bool nfs4_error_stateid_expired(int err
)
3648 case -NFS4ERR_DELEG_REVOKED
:
3649 case -NFS4ERR_ADMIN_REVOKED
:
3650 case -NFS4ERR_BAD_STATEID
:
3651 case -NFS4ERR_STALE_STATEID
:
3652 case -NFS4ERR_OLD_STATEID
:
3653 case -NFS4ERR_OPENMODE
:
3654 case -NFS4ERR_EXPIRED
:
3660 void __nfs4_read_done_cb(struct nfs_read_data
*data
)
3662 nfs_invalidate_atime(data
->header
->inode
);
3665 static int nfs4_read_done_cb(struct rpc_task
*task
, struct nfs_read_data
*data
)
3667 struct nfs_server
*server
= NFS_SERVER(data
->header
->inode
);
3669 if (nfs4_async_handle_error(task
, server
, data
->args
.context
->state
) == -EAGAIN
) {
3670 rpc_restart_call_prepare(task
);
3674 __nfs4_read_done_cb(data
);
3675 if (task
->tk_status
> 0)
3676 renew_lease(server
, data
->timestamp
);
3680 static bool nfs4_read_stateid_changed(struct rpc_task
*task
,
3681 struct nfs_readargs
*args
)
3684 if (!nfs4_error_stateid_expired(task
->tk_status
) ||
3685 nfs4_stateid_is_current(&args
->stateid
,
3690 rpc_restart_call_prepare(task
);
3694 static int nfs4_read_done(struct rpc_task
*task
, struct nfs_read_data
*data
)
3697 dprintk("--> %s\n", __func__
);
3699 if (!nfs4_sequence_done(task
, &data
->res
.seq_res
))
3701 if (nfs4_read_stateid_changed(task
, &data
->args
))
3703 return data
->read_done_cb
? data
->read_done_cb(task
, data
) :
3704 nfs4_read_done_cb(task
, data
);
3707 static void nfs4_proc_read_setup(struct nfs_read_data
*data
, struct rpc_message
*msg
)
3709 data
->timestamp
= jiffies
;
3710 data
->read_done_cb
= nfs4_read_done_cb
;
3711 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_READ
];
3712 nfs41_init_sequence(&data
->args
.seq_args
, &data
->res
.seq_res
, 0);
3715 static void nfs4_proc_read_rpc_prepare(struct rpc_task
*task
, struct nfs_read_data
*data
)
3717 if (nfs4_setup_sequence(NFS_SERVER(data
->header
->inode
),
3718 &data
->args
.seq_args
,
3722 nfs4_set_rw_stateid(&data
->args
.stateid
, data
->args
.context
,
3723 data
->args
.lock_context
, FMODE_READ
);
3726 static int nfs4_write_done_cb(struct rpc_task
*task
, struct nfs_write_data
*data
)
3728 struct inode
*inode
= data
->header
->inode
;
3730 if (nfs4_async_handle_error(task
, NFS_SERVER(inode
), data
->args
.context
->state
) == -EAGAIN
) {
3731 rpc_restart_call_prepare(task
);
3734 if (task
->tk_status
>= 0) {
3735 renew_lease(NFS_SERVER(inode
), data
->timestamp
);
3736 nfs_post_op_update_inode_force_wcc(inode
, &data
->fattr
);
3741 static bool nfs4_write_stateid_changed(struct rpc_task
*task
,
3742 struct nfs_writeargs
*args
)
3745 if (!nfs4_error_stateid_expired(task
->tk_status
) ||
3746 nfs4_stateid_is_current(&args
->stateid
,
3751 rpc_restart_call_prepare(task
);
3755 static int nfs4_write_done(struct rpc_task
*task
, struct nfs_write_data
*data
)
3757 if (!nfs4_sequence_done(task
, &data
->res
.seq_res
))
3759 if (nfs4_write_stateid_changed(task
, &data
->args
))
3761 return data
->write_done_cb
? data
->write_done_cb(task
, data
) :
3762 nfs4_write_done_cb(task
, data
);
3766 bool nfs4_write_need_cache_consistency_data(const struct nfs_write_data
*data
)
3768 const struct nfs_pgio_header
*hdr
= data
->header
;
3770 /* Don't request attributes for pNFS or O_DIRECT writes */
3771 if (data
->ds_clp
!= NULL
|| hdr
->dreq
!= NULL
)
3773 /* Otherwise, request attributes if and only if we don't hold
3776 return nfs4_have_delegation(hdr
->inode
, FMODE_READ
) == 0;
3779 static void nfs4_proc_write_setup(struct nfs_write_data
*data
, struct rpc_message
*msg
)
3781 struct nfs_server
*server
= NFS_SERVER(data
->header
->inode
);
3783 if (!nfs4_write_need_cache_consistency_data(data
)) {
3784 data
->args
.bitmask
= NULL
;
3785 data
->res
.fattr
= NULL
;
3787 data
->args
.bitmask
= server
->cache_consistency_bitmask
;
3789 if (!data
->write_done_cb
)
3790 data
->write_done_cb
= nfs4_write_done_cb
;
3791 data
->res
.server
= server
;
3792 data
->timestamp
= jiffies
;
3794 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_WRITE
];
3795 nfs41_init_sequence(&data
->args
.seq_args
, &data
->res
.seq_res
, 1);
3798 static void nfs4_proc_write_rpc_prepare(struct rpc_task
*task
, struct nfs_write_data
*data
)
3800 if (nfs4_setup_sequence(NFS_SERVER(data
->header
->inode
),
3801 &data
->args
.seq_args
,
3805 nfs4_set_rw_stateid(&data
->args
.stateid
, data
->args
.context
,
3806 data
->args
.lock_context
, FMODE_WRITE
);
3809 static void nfs4_proc_commit_rpc_prepare(struct rpc_task
*task
, struct nfs_commit_data
*data
)
3811 nfs4_setup_sequence(NFS_SERVER(data
->inode
),
3812 &data
->args
.seq_args
,
3817 static int nfs4_commit_done_cb(struct rpc_task
*task
, struct nfs_commit_data
*data
)
3819 struct inode
*inode
= data
->inode
;
3821 if (nfs4_async_handle_error(task
, NFS_SERVER(inode
), NULL
) == -EAGAIN
) {
3822 rpc_restart_call_prepare(task
);
3828 static int nfs4_commit_done(struct rpc_task
*task
, struct nfs_commit_data
*data
)
3830 if (!nfs4_sequence_done(task
, &data
->res
.seq_res
))
3832 return data
->commit_done_cb(task
, data
);
3835 static void nfs4_proc_commit_setup(struct nfs_commit_data
*data
, struct rpc_message
*msg
)
3837 struct nfs_server
*server
= NFS_SERVER(data
->inode
);
3839 if (data
->commit_done_cb
== NULL
)
3840 data
->commit_done_cb
= nfs4_commit_done_cb
;
3841 data
->res
.server
= server
;
3842 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_COMMIT
];
3843 nfs41_init_sequence(&data
->args
.seq_args
, &data
->res
.seq_res
, 1);
3846 struct nfs4_renewdata
{
3847 struct nfs_client
*client
;
3848 unsigned long timestamp
;
3852 * nfs4_proc_async_renew(): This is not one of the nfs_rpc_ops; it is a special
3853 * standalone procedure for queueing an asynchronous RENEW.
3855 static void nfs4_renew_release(void *calldata
)
3857 struct nfs4_renewdata
*data
= calldata
;
3858 struct nfs_client
*clp
= data
->client
;
3860 if (atomic_read(&clp
->cl_count
) > 1)
3861 nfs4_schedule_state_renewal(clp
);
3862 nfs_put_client(clp
);
3866 static void nfs4_renew_done(struct rpc_task
*task
, void *calldata
)
3868 struct nfs4_renewdata
*data
= calldata
;
3869 struct nfs_client
*clp
= data
->client
;
3870 unsigned long timestamp
= data
->timestamp
;
3872 if (task
->tk_status
< 0) {
3873 /* Unless we're shutting down, schedule state recovery! */
3874 if (test_bit(NFS_CS_RENEWD
, &clp
->cl_res_state
) == 0)
3876 if (task
->tk_status
!= NFS4ERR_CB_PATH_DOWN
) {
3877 nfs4_schedule_lease_recovery(clp
);
3880 nfs4_schedule_path_down_recovery(clp
);
3882 do_renew_lease(clp
, timestamp
);
3885 static const struct rpc_call_ops nfs4_renew_ops
= {
3886 .rpc_call_done
= nfs4_renew_done
,
3887 .rpc_release
= nfs4_renew_release
,
3890 static int nfs4_proc_async_renew(struct nfs_client
*clp
, struct rpc_cred
*cred
, unsigned renew_flags
)
3892 struct rpc_message msg
= {
3893 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RENEW
],
3897 struct nfs4_renewdata
*data
;
3899 if (renew_flags
== 0)
3901 if (!atomic_inc_not_zero(&clp
->cl_count
))
3903 data
= kmalloc(sizeof(*data
), GFP_NOFS
);
3907 data
->timestamp
= jiffies
;
3908 return rpc_call_async(clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
,
3909 &nfs4_renew_ops
, data
);
3912 static int nfs4_proc_renew(struct nfs_client
*clp
, struct rpc_cred
*cred
)
3914 struct rpc_message msg
= {
3915 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RENEW
],
3919 unsigned long now
= jiffies
;
3922 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
3925 do_renew_lease(clp
, now
);
3929 static inline int nfs4_server_supports_acls(struct nfs_server
*server
)
3931 return (server
->caps
& NFS_CAP_ACLS
)
3932 && (server
->acl_bitmask
& ACL4_SUPPORT_ALLOW_ACL
)
3933 && (server
->acl_bitmask
& ACL4_SUPPORT_DENY_ACL
);
3936 /* Assuming that XATTR_SIZE_MAX is a multiple of PAGE_SIZE, and that
3937 * it's OK to put sizeof(void) * (XATTR_SIZE_MAX/PAGE_SIZE) bytes on
3940 #define NFS4ACL_MAXPAGES DIV_ROUND_UP(XATTR_SIZE_MAX, PAGE_SIZE)
3942 static int buf_to_pages_noslab(const void *buf
, size_t buflen
,
3943 struct page
**pages
, unsigned int *pgbase
)
3945 struct page
*newpage
, **spages
;
3951 len
= min_t(size_t, PAGE_SIZE
, buflen
);
3952 newpage
= alloc_page(GFP_KERNEL
);
3954 if (newpage
== NULL
)
3956 memcpy(page_address(newpage
), buf
, len
);
3961 } while (buflen
!= 0);
3967 __free_page(spages
[rc
-1]);
3971 struct nfs4_cached_acl
{
3977 static void nfs4_set_cached_acl(struct inode
*inode
, struct nfs4_cached_acl
*acl
)
3979 struct nfs_inode
*nfsi
= NFS_I(inode
);
3981 spin_lock(&inode
->i_lock
);
3982 kfree(nfsi
->nfs4_acl
);
3983 nfsi
->nfs4_acl
= acl
;
3984 spin_unlock(&inode
->i_lock
);
3987 static void nfs4_zap_acl_attr(struct inode
*inode
)
3989 nfs4_set_cached_acl(inode
, NULL
);
3992 static inline ssize_t
nfs4_read_cached_acl(struct inode
*inode
, char *buf
, size_t buflen
)
3994 struct nfs_inode
*nfsi
= NFS_I(inode
);
3995 struct nfs4_cached_acl
*acl
;
3998 spin_lock(&inode
->i_lock
);
3999 acl
= nfsi
->nfs4_acl
;
4002 if (buf
== NULL
) /* user is just asking for length */
4004 if (acl
->cached
== 0)
4006 ret
= -ERANGE
; /* see getxattr(2) man page */
4007 if (acl
->len
> buflen
)
4009 memcpy(buf
, acl
->data
, acl
->len
);
4013 spin_unlock(&inode
->i_lock
);
4017 static void nfs4_write_cached_acl(struct inode
*inode
, struct page
**pages
, size_t pgbase
, size_t acl_len
)
4019 struct nfs4_cached_acl
*acl
;
4020 size_t buflen
= sizeof(*acl
) + acl_len
;
4022 if (buflen
<= PAGE_SIZE
) {
4023 acl
= kmalloc(buflen
, GFP_KERNEL
);
4027 _copy_from_pages(acl
->data
, pages
, pgbase
, acl_len
);
4029 acl
= kmalloc(sizeof(*acl
), GFP_KERNEL
);
4036 nfs4_set_cached_acl(inode
, acl
);
4040 * The getxattr API returns the required buffer length when called with a
4041 * NULL buf. The NFSv4 acl tool then calls getxattr again after allocating
4042 * the required buf. On a NULL buf, we send a page of data to the server
4043 * guessing that the ACL request can be serviced by a page. If so, we cache
4044 * up to the page of ACL data, and the 2nd call to getxattr is serviced by
4045 * the cache. If not so, we throw away the page, and cache the required
4046 * length. The next getxattr call will then produce another round trip to
4047 * the server, this time with the input buf of the required size.
4049 static ssize_t
__nfs4_get_acl_uncached(struct inode
*inode
, void *buf
, size_t buflen
)
4051 struct page
*pages
[NFS4ACL_MAXPAGES
+ 1] = {NULL
, };
4052 struct nfs_getaclargs args
= {
4053 .fh
= NFS_FH(inode
),
4057 struct nfs_getaclres res
= {
4060 struct rpc_message msg
= {
4061 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GETACL
],
4065 unsigned int npages
= DIV_ROUND_UP(buflen
, PAGE_SIZE
) + 1;
4066 int ret
= -ENOMEM
, i
;
4068 if (npages
> ARRAY_SIZE(pages
))
4071 for (i
= 0; i
< npages
; i
++) {
4072 pages
[i
] = alloc_page(GFP_KERNEL
);
4077 /* for decoding across pages */
4078 res
.acl_scratch
= alloc_page(GFP_KERNEL
);
4079 if (!res
.acl_scratch
)
4082 args
.acl_len
= npages
* PAGE_SIZE
;
4083 args
.acl_pgbase
= 0;
4085 dprintk("%s buf %p buflen %zu npages %d args.acl_len %zu\n",
4086 __func__
, buf
, buflen
, npages
, args
.acl_len
);
4087 ret
= nfs4_call_sync(NFS_SERVER(inode
)->client
, NFS_SERVER(inode
),
4088 &msg
, &args
.seq_args
, &res
.seq_res
, 0);
4092 /* Handle the case where the passed-in buffer is too short */
4093 if (res
.acl_flags
& NFS4_ACL_TRUNC
) {
4094 /* Did the user only issue a request for the acl length? */
4100 nfs4_write_cached_acl(inode
, pages
, res
.acl_data_offset
, res
.acl_len
);
4102 if (res
.acl_len
> buflen
) {
4106 _copy_from_pages(buf
, pages
, res
.acl_data_offset
, res
.acl_len
);
4111 for (i
= 0; i
< npages
; i
++)
4113 __free_page(pages
[i
]);
4114 if (res
.acl_scratch
)
4115 __free_page(res
.acl_scratch
);
4119 static ssize_t
nfs4_get_acl_uncached(struct inode
*inode
, void *buf
, size_t buflen
)
4121 struct nfs4_exception exception
= { };
4124 ret
= __nfs4_get_acl_uncached(inode
, buf
, buflen
);
4127 ret
= nfs4_handle_exception(NFS_SERVER(inode
), ret
, &exception
);
4128 } while (exception
.retry
);
4132 static ssize_t
nfs4_proc_get_acl(struct inode
*inode
, void *buf
, size_t buflen
)
4134 struct nfs_server
*server
= NFS_SERVER(inode
);
4137 if (!nfs4_server_supports_acls(server
))
4139 ret
= nfs_revalidate_inode(server
, inode
);
4142 if (NFS_I(inode
)->cache_validity
& NFS_INO_INVALID_ACL
)
4143 nfs_zap_acl_cache(inode
);
4144 ret
= nfs4_read_cached_acl(inode
, buf
, buflen
);
4146 /* -ENOENT is returned if there is no ACL or if there is an ACL
4147 * but no cached acl data, just the acl length */
4149 return nfs4_get_acl_uncached(inode
, buf
, buflen
);
4152 static int __nfs4_proc_set_acl(struct inode
*inode
, const void *buf
, size_t buflen
)
4154 struct nfs_server
*server
= NFS_SERVER(inode
);
4155 struct page
*pages
[NFS4ACL_MAXPAGES
];
4156 struct nfs_setaclargs arg
= {
4157 .fh
= NFS_FH(inode
),
4161 struct nfs_setaclres res
;
4162 struct rpc_message msg
= {
4163 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETACL
],
4167 unsigned int npages
= DIV_ROUND_UP(buflen
, PAGE_SIZE
);
4170 if (!nfs4_server_supports_acls(server
))
4172 if (npages
> ARRAY_SIZE(pages
))
4174 i
= buf_to_pages_noslab(buf
, buflen
, arg
.acl_pages
, &arg
.acl_pgbase
);
4177 nfs4_inode_return_delegation(inode
);
4178 ret
= nfs4_call_sync(server
->client
, server
, &msg
, &arg
.seq_args
, &res
.seq_res
, 1);
4181 * Free each page after tx, so the only ref left is
4182 * held by the network stack
4185 put_page(pages
[i
-1]);
4188 * Acl update can result in inode attribute update.
4189 * so mark the attribute cache invalid.
4191 spin_lock(&inode
->i_lock
);
4192 NFS_I(inode
)->cache_validity
|= NFS_INO_INVALID_ATTR
;
4193 spin_unlock(&inode
->i_lock
);
4194 nfs_access_zap_cache(inode
);
4195 nfs_zap_acl_cache(inode
);
4199 static int nfs4_proc_set_acl(struct inode
*inode
, const void *buf
, size_t buflen
)
4201 struct nfs4_exception exception
= { };
4204 err
= nfs4_handle_exception(NFS_SERVER(inode
),
4205 __nfs4_proc_set_acl(inode
, buf
, buflen
),
4207 } while (exception
.retry
);
4212 nfs4_async_handle_error(struct rpc_task
*task
, const struct nfs_server
*server
, struct nfs4_state
*state
)
4214 struct nfs_client
*clp
= server
->nfs_client
;
4216 if (task
->tk_status
>= 0)
4218 switch(task
->tk_status
) {
4219 case -NFS4ERR_DELEG_REVOKED
:
4220 case -NFS4ERR_ADMIN_REVOKED
:
4221 case -NFS4ERR_BAD_STATEID
:
4224 nfs_remove_bad_delegation(state
->inode
);
4225 case -NFS4ERR_OPENMODE
:
4228 if (nfs4_schedule_stateid_recovery(server
, state
) < 0)
4229 goto stateid_invalid
;
4230 goto wait_on_recovery
;
4231 case -NFS4ERR_EXPIRED
:
4232 if (state
!= NULL
) {
4233 if (nfs4_schedule_stateid_recovery(server
, state
) < 0)
4234 goto stateid_invalid
;
4236 case -NFS4ERR_STALE_STATEID
:
4237 case -NFS4ERR_STALE_CLIENTID
:
4238 nfs4_schedule_lease_recovery(clp
);
4239 goto wait_on_recovery
;
4240 #if defined(CONFIG_NFS_V4_1)
4241 case -NFS4ERR_BADSESSION
:
4242 case -NFS4ERR_BADSLOT
:
4243 case -NFS4ERR_BAD_HIGH_SLOT
:
4244 case -NFS4ERR_DEADSESSION
:
4245 case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION
:
4246 case -NFS4ERR_SEQ_FALSE_RETRY
:
4247 case -NFS4ERR_SEQ_MISORDERED
:
4248 dprintk("%s ERROR %d, Reset session\n", __func__
,
4250 nfs4_schedule_session_recovery(clp
->cl_session
, task
->tk_status
);
4251 goto wait_on_recovery
;
4252 #endif /* CONFIG_NFS_V4_1 */
4253 case -NFS4ERR_DELAY
:
4254 nfs_inc_server_stats(server
, NFSIOS_DELAY
);
4255 case -NFS4ERR_GRACE
:
4256 rpc_delay(task
, NFS4_POLL_RETRY_MAX
);
4257 task
->tk_status
= 0;
4259 case -NFS4ERR_RETRY_UNCACHED_REP
:
4260 case -NFS4ERR_OLD_STATEID
:
4261 task
->tk_status
= 0;
4264 task
->tk_status
= nfs4_map_errors(task
->tk_status
);
4267 task
->tk_status
= -EIO
;
4270 rpc_sleep_on(&clp
->cl_rpcwaitq
, task
, NULL
);
4271 if (test_bit(NFS4CLNT_MANAGER_RUNNING
, &clp
->cl_state
) == 0)
4272 rpc_wake_up_queued_task(&clp
->cl_rpcwaitq
, task
);
4273 task
->tk_status
= 0;
4277 static void nfs4_init_boot_verifier(const struct nfs_client
*clp
,
4278 nfs4_verifier
*bootverf
)
4282 if (test_bit(NFS4CLNT_PURGE_STATE
, &clp
->cl_state
)) {
4283 /* An impossible timestamp guarantees this value
4284 * will never match a generated boot time. */
4286 verf
[1] = (__be32
)(NSEC_PER_SEC
+ 1);
4288 struct nfs_net
*nn
= net_generic(clp
->cl_net
, nfs_net_id
);
4289 verf
[0] = (__be32
)nn
->boot_time
.tv_sec
;
4290 verf
[1] = (__be32
)nn
->boot_time
.tv_nsec
;
4292 memcpy(bootverf
->data
, verf
, sizeof(bootverf
->data
));
4296 nfs4_init_nonuniform_client_string(const struct nfs_client
*clp
,
4297 char *buf
, size_t len
)
4299 unsigned int result
;
4302 result
= scnprintf(buf
, len
, "Linux NFSv4.0 %s/%s %s",
4304 rpc_peeraddr2str(clp
->cl_rpcclient
,
4306 rpc_peeraddr2str(clp
->cl_rpcclient
,
4307 RPC_DISPLAY_PROTO
));
4313 nfs4_init_uniform_client_string(const struct nfs_client
*clp
,
4314 char *buf
, size_t len
)
4316 char *nodename
= clp
->cl_rpcclient
->cl_nodename
;
4318 if (nfs4_client_id_uniquifier
[0] != '\0')
4319 nodename
= nfs4_client_id_uniquifier
;
4320 return scnprintf(buf
, len
, "Linux NFSv%u.%u %s",
4321 clp
->rpc_ops
->version
, clp
->cl_minorversion
,
4326 * nfs4_proc_setclientid - Negotiate client ID
4327 * @clp: state data structure
4328 * @program: RPC program for NFSv4 callback service
4329 * @port: IP port number for NFS4 callback service
4330 * @cred: RPC credential to use for this call
4331 * @res: where to place the result
4333 * Returns zero, a negative errno, or a negative NFS4ERR status code.
4335 int nfs4_proc_setclientid(struct nfs_client
*clp
, u32 program
,
4336 unsigned short port
, struct rpc_cred
*cred
,
4337 struct nfs4_setclientid_res
*res
)
4339 nfs4_verifier sc_verifier
;
4340 struct nfs4_setclientid setclientid
= {
4341 .sc_verifier
= &sc_verifier
,
4343 .sc_cb_ident
= clp
->cl_cb_ident
,
4345 struct rpc_message msg
= {
4346 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETCLIENTID
],
4347 .rpc_argp
= &setclientid
,
4353 /* nfs_client_id4 */
4354 nfs4_init_boot_verifier(clp
, &sc_verifier
);
4355 if (test_bit(NFS_CS_MIGRATION
, &clp
->cl_flags
))
4356 setclientid
.sc_name_len
=
4357 nfs4_init_uniform_client_string(clp
,
4358 setclientid
.sc_name
,
4359 sizeof(setclientid
.sc_name
));
4361 setclientid
.sc_name_len
=
4362 nfs4_init_nonuniform_client_string(clp
,
4363 setclientid
.sc_name
,
4364 sizeof(setclientid
.sc_name
));
4367 setclientid
.sc_netid_len
= scnprintf(setclientid
.sc_netid
,
4368 sizeof(setclientid
.sc_netid
),
4369 rpc_peeraddr2str(clp
->cl_rpcclient
,
4370 RPC_DISPLAY_NETID
));
4372 setclientid
.sc_uaddr_len
= scnprintf(setclientid
.sc_uaddr
,
4373 sizeof(setclientid
.sc_uaddr
), "%s.%u.%u",
4374 clp
->cl_ipaddr
, port
>> 8, port
& 255);
4376 dprintk("NFS call setclientid auth=%s, '%.*s'\n",
4377 clp
->cl_rpcclient
->cl_auth
->au_ops
->au_name
,
4378 setclientid
.sc_name_len
, setclientid
.sc_name
);
4379 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
4380 dprintk("NFS reply setclientid: %d\n", status
);
4385 * nfs4_proc_setclientid_confirm - Confirm client ID
4386 * @clp: state data structure
4387 * @res: result of a previous SETCLIENTID
4388 * @cred: RPC credential to use for this call
4390 * Returns zero, a negative errno, or a negative NFS4ERR status code.
4392 int nfs4_proc_setclientid_confirm(struct nfs_client
*clp
,
4393 struct nfs4_setclientid_res
*arg
,
4394 struct rpc_cred
*cred
)
4396 struct rpc_message msg
= {
4397 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETCLIENTID_CONFIRM
],
4403 dprintk("NFS call setclientid_confirm auth=%s, (client ID %llx)\n",
4404 clp
->cl_rpcclient
->cl_auth
->au_ops
->au_name
,
4406 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
4407 dprintk("NFS reply setclientid_confirm: %d\n", status
);
4411 struct nfs4_delegreturndata
{
4412 struct nfs4_delegreturnargs args
;
4413 struct nfs4_delegreturnres res
;
4415 nfs4_stateid stateid
;
4416 unsigned long timestamp
;
4417 struct nfs_fattr fattr
;
4421 static void nfs4_delegreturn_done(struct rpc_task
*task
, void *calldata
)
4423 struct nfs4_delegreturndata
*data
= calldata
;
4425 if (!nfs4_sequence_done(task
, &data
->res
.seq_res
))
4428 switch (task
->tk_status
) {
4430 renew_lease(data
->res
.server
, data
->timestamp
);
4432 case -NFS4ERR_ADMIN_REVOKED
:
4433 case -NFS4ERR_DELEG_REVOKED
:
4434 case -NFS4ERR_BAD_STATEID
:
4435 case -NFS4ERR_OLD_STATEID
:
4436 case -NFS4ERR_STALE_STATEID
:
4437 case -NFS4ERR_EXPIRED
:
4438 task
->tk_status
= 0;
4441 if (nfs4_async_handle_error(task
, data
->res
.server
, NULL
) ==
4443 rpc_restart_call_prepare(task
);
4447 data
->rpc_status
= task
->tk_status
;
4450 static void nfs4_delegreturn_release(void *calldata
)
4455 #if defined(CONFIG_NFS_V4_1)
4456 static void nfs4_delegreturn_prepare(struct rpc_task
*task
, void *data
)
4458 struct nfs4_delegreturndata
*d_data
;
4460 d_data
= (struct nfs4_delegreturndata
*)data
;
4462 nfs4_setup_sequence(d_data
->res
.server
,
4463 &d_data
->args
.seq_args
,
4464 &d_data
->res
.seq_res
,
4467 #endif /* CONFIG_NFS_V4_1 */
4469 static const struct rpc_call_ops nfs4_delegreturn_ops
= {
4470 #if defined(CONFIG_NFS_V4_1)
4471 .rpc_call_prepare
= nfs4_delegreturn_prepare
,
4472 #endif /* CONFIG_NFS_V4_1 */
4473 .rpc_call_done
= nfs4_delegreturn_done
,
4474 .rpc_release
= nfs4_delegreturn_release
,
4477 static int _nfs4_proc_delegreturn(struct inode
*inode
, struct rpc_cred
*cred
, const nfs4_stateid
*stateid
, int issync
)
4479 struct nfs4_delegreturndata
*data
;
4480 struct nfs_server
*server
= NFS_SERVER(inode
);
4481 struct rpc_task
*task
;
4482 struct rpc_message msg
= {
4483 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_DELEGRETURN
],
4486 struct rpc_task_setup task_setup_data
= {
4487 .rpc_client
= server
->client
,
4488 .rpc_message
= &msg
,
4489 .callback_ops
= &nfs4_delegreturn_ops
,
4490 .flags
= RPC_TASK_ASYNC
,
4494 data
= kzalloc(sizeof(*data
), GFP_NOFS
);
4497 nfs41_init_sequence(&data
->args
.seq_args
, &data
->res
.seq_res
, 1);
4498 data
->args
.fhandle
= &data
->fh
;
4499 data
->args
.stateid
= &data
->stateid
;
4500 data
->args
.bitmask
= server
->cache_consistency_bitmask
;
4501 nfs_copy_fh(&data
->fh
, NFS_FH(inode
));
4502 nfs4_stateid_copy(&data
->stateid
, stateid
);
4503 data
->res
.fattr
= &data
->fattr
;
4504 data
->res
.server
= server
;
4505 nfs_fattr_init(data
->res
.fattr
);
4506 data
->timestamp
= jiffies
;
4507 data
->rpc_status
= 0;
4509 task_setup_data
.callback_data
= data
;
4510 msg
.rpc_argp
= &data
->args
;
4511 msg
.rpc_resp
= &data
->res
;
4512 task
= rpc_run_task(&task_setup_data
);
4514 return PTR_ERR(task
);
4517 status
= nfs4_wait_for_completion_rpc_task(task
);
4520 status
= data
->rpc_status
;
4522 nfs_post_op_update_inode_force_wcc(inode
, &data
->fattr
);
4524 nfs_refresh_inode(inode
, &data
->fattr
);
4530 int nfs4_proc_delegreturn(struct inode
*inode
, struct rpc_cred
*cred
, const nfs4_stateid
*stateid
, int issync
)
4532 struct nfs_server
*server
= NFS_SERVER(inode
);
4533 struct nfs4_exception exception
= { };
4536 err
= _nfs4_proc_delegreturn(inode
, cred
, stateid
, issync
);
4538 case -NFS4ERR_STALE_STATEID
:
4539 case -NFS4ERR_EXPIRED
:
4543 err
= nfs4_handle_exception(server
, err
, &exception
);
4544 } while (exception
.retry
);
4548 #define NFS4_LOCK_MINTIMEOUT (1 * HZ)
4549 #define NFS4_LOCK_MAXTIMEOUT (30 * HZ)
4552 * sleep, with exponential backoff, and retry the LOCK operation.
4554 static unsigned long
4555 nfs4_set_lock_task_retry(unsigned long timeout
)
4557 freezable_schedule_timeout_killable_unsafe(timeout
);
4559 if (timeout
> NFS4_LOCK_MAXTIMEOUT
)
4560 return NFS4_LOCK_MAXTIMEOUT
;
4564 static int _nfs4_proc_getlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
4566 struct inode
*inode
= state
->inode
;
4567 struct nfs_server
*server
= NFS_SERVER(inode
);
4568 struct nfs_client
*clp
= server
->nfs_client
;
4569 struct nfs_lockt_args arg
= {
4570 .fh
= NFS_FH(inode
),
4573 struct nfs_lockt_res res
= {
4576 struct rpc_message msg
= {
4577 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOCKT
],
4580 .rpc_cred
= state
->owner
->so_cred
,
4582 struct nfs4_lock_state
*lsp
;
4585 arg
.lock_owner
.clientid
= clp
->cl_clientid
;
4586 status
= nfs4_set_lock_state(state
, request
);
4589 lsp
= request
->fl_u
.nfs4_fl
.owner
;
4590 arg
.lock_owner
.id
= lsp
->ls_seqid
.owner_id
;
4591 arg
.lock_owner
.s_dev
= server
->s_dev
;
4592 status
= nfs4_call_sync(server
->client
, server
, &msg
, &arg
.seq_args
, &res
.seq_res
, 1);
4595 request
->fl_type
= F_UNLCK
;
4597 case -NFS4ERR_DENIED
:
4600 request
->fl_ops
->fl_release_private(request
);
4601 request
->fl_ops
= NULL
;
4606 static int nfs4_proc_getlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
4608 struct nfs4_exception exception
= { };
4612 err
= nfs4_handle_exception(NFS_SERVER(state
->inode
),
4613 _nfs4_proc_getlk(state
, cmd
, request
),
4615 } while (exception
.retry
);
4619 static int do_vfs_lock(struct file
*file
, struct file_lock
*fl
)
4622 switch (fl
->fl_flags
& (FL_POSIX
|FL_FLOCK
)) {
4624 res
= posix_lock_file_wait(file
, fl
);
4627 res
= flock_lock_file_wait(file
, fl
);
4635 struct nfs4_unlockdata
{
4636 struct nfs_locku_args arg
;
4637 struct nfs_locku_res res
;
4638 struct nfs4_lock_state
*lsp
;
4639 struct nfs_open_context
*ctx
;
4640 struct file_lock fl
;
4641 const struct nfs_server
*server
;
4642 unsigned long timestamp
;
4645 static struct nfs4_unlockdata
*nfs4_alloc_unlockdata(struct file_lock
*fl
,
4646 struct nfs_open_context
*ctx
,
4647 struct nfs4_lock_state
*lsp
,
4648 struct nfs_seqid
*seqid
)
4650 struct nfs4_unlockdata
*p
;
4651 struct inode
*inode
= lsp
->ls_state
->inode
;
4653 p
= kzalloc(sizeof(*p
), GFP_NOFS
);
4656 p
->arg
.fh
= NFS_FH(inode
);
4658 p
->arg
.seqid
= seqid
;
4659 p
->res
.seqid
= seqid
;
4660 p
->arg
.stateid
= &lsp
->ls_stateid
;
4662 atomic_inc(&lsp
->ls_count
);
4663 /* Ensure we don't close file until we're done freeing locks! */
4664 p
->ctx
= get_nfs_open_context(ctx
);
4665 memcpy(&p
->fl
, fl
, sizeof(p
->fl
));
4666 p
->server
= NFS_SERVER(inode
);
4670 static void nfs4_locku_release_calldata(void *data
)
4672 struct nfs4_unlockdata
*calldata
= data
;
4673 nfs_free_seqid(calldata
->arg
.seqid
);
4674 nfs4_put_lock_state(calldata
->lsp
);
4675 put_nfs_open_context(calldata
->ctx
);
4679 static void nfs4_locku_done(struct rpc_task
*task
, void *data
)
4681 struct nfs4_unlockdata
*calldata
= data
;
4683 if (!nfs4_sequence_done(task
, &calldata
->res
.seq_res
))
4685 switch (task
->tk_status
) {
4687 nfs4_stateid_copy(&calldata
->lsp
->ls_stateid
,
4688 &calldata
->res
.stateid
);
4689 renew_lease(calldata
->server
, calldata
->timestamp
);
4691 case -NFS4ERR_BAD_STATEID
:
4692 case -NFS4ERR_OLD_STATEID
:
4693 case -NFS4ERR_STALE_STATEID
:
4694 case -NFS4ERR_EXPIRED
:
4697 if (nfs4_async_handle_error(task
, calldata
->server
, NULL
) == -EAGAIN
)
4698 rpc_restart_call_prepare(task
);
4700 nfs_release_seqid(calldata
->arg
.seqid
);
4703 static void nfs4_locku_prepare(struct rpc_task
*task
, void *data
)
4705 struct nfs4_unlockdata
*calldata
= data
;
4707 if (nfs_wait_on_sequence(calldata
->arg
.seqid
, task
) != 0)
4709 if (test_bit(NFS_LOCK_INITIALIZED
, &calldata
->lsp
->ls_flags
) == 0) {
4710 /* Note: exit _without_ running nfs4_locku_done */
4713 calldata
->timestamp
= jiffies
;
4714 if (nfs4_setup_sequence(calldata
->server
,
4715 &calldata
->arg
.seq_args
,
4716 &calldata
->res
.seq_res
,
4718 nfs_release_seqid(calldata
->arg
.seqid
);
4721 task
->tk_action
= NULL
;
4723 nfs4_sequence_done(task
, &calldata
->res
.seq_res
);
4726 static const struct rpc_call_ops nfs4_locku_ops
= {
4727 .rpc_call_prepare
= nfs4_locku_prepare
,
4728 .rpc_call_done
= nfs4_locku_done
,
4729 .rpc_release
= nfs4_locku_release_calldata
,
4732 static struct rpc_task
*nfs4_do_unlck(struct file_lock
*fl
,
4733 struct nfs_open_context
*ctx
,
4734 struct nfs4_lock_state
*lsp
,
4735 struct nfs_seqid
*seqid
)
4737 struct nfs4_unlockdata
*data
;
4738 struct rpc_message msg
= {
4739 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOCKU
],
4740 .rpc_cred
= ctx
->cred
,
4742 struct rpc_task_setup task_setup_data
= {
4743 .rpc_client
= NFS_CLIENT(lsp
->ls_state
->inode
),
4744 .rpc_message
= &msg
,
4745 .callback_ops
= &nfs4_locku_ops
,
4746 .workqueue
= nfsiod_workqueue
,
4747 .flags
= RPC_TASK_ASYNC
,
4750 /* Ensure this is an unlock - when canceling a lock, the
4751 * canceled lock is passed in, and it won't be an unlock.
4753 fl
->fl_type
= F_UNLCK
;
4755 data
= nfs4_alloc_unlockdata(fl
, ctx
, lsp
, seqid
);
4757 nfs_free_seqid(seqid
);
4758 return ERR_PTR(-ENOMEM
);
4761 nfs41_init_sequence(&data
->arg
.seq_args
, &data
->res
.seq_res
, 1);
4762 msg
.rpc_argp
= &data
->arg
;
4763 msg
.rpc_resp
= &data
->res
;
4764 task_setup_data
.callback_data
= data
;
4765 return rpc_run_task(&task_setup_data
);
4768 static int nfs4_proc_unlck(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
4770 struct inode
*inode
= state
->inode
;
4771 struct nfs4_state_owner
*sp
= state
->owner
;
4772 struct nfs_inode
*nfsi
= NFS_I(inode
);
4773 struct nfs_seqid
*seqid
;
4774 struct nfs4_lock_state
*lsp
;
4775 struct rpc_task
*task
;
4777 unsigned char fl_flags
= request
->fl_flags
;
4779 status
= nfs4_set_lock_state(state
, request
);
4780 /* Unlock _before_ we do the RPC call */
4781 request
->fl_flags
|= FL_EXISTS
;
4782 /* Exclude nfs_delegation_claim_locks() */
4783 mutex_lock(&sp
->so_delegreturn_mutex
);
4784 /* Exclude nfs4_reclaim_open_stateid() - note nesting! */
4785 down_read(&nfsi
->rwsem
);
4786 if (do_vfs_lock(request
->fl_file
, request
) == -ENOENT
) {
4787 up_read(&nfsi
->rwsem
);
4788 mutex_unlock(&sp
->so_delegreturn_mutex
);
4791 up_read(&nfsi
->rwsem
);
4792 mutex_unlock(&sp
->so_delegreturn_mutex
);
4795 /* Is this a delegated lock? */
4796 lsp
= request
->fl_u
.nfs4_fl
.owner
;
4797 if (test_bit(NFS_LOCK_INITIALIZED
, &lsp
->ls_flags
) == 0)
4799 seqid
= nfs_alloc_seqid(&lsp
->ls_seqid
, GFP_KERNEL
);
4803 task
= nfs4_do_unlck(request
, nfs_file_open_context(request
->fl_file
), lsp
, seqid
);
4804 status
= PTR_ERR(task
);
4807 status
= nfs4_wait_for_completion_rpc_task(task
);
4810 request
->fl_flags
= fl_flags
;
4814 struct nfs4_lockdata
{
4815 struct nfs_lock_args arg
;
4816 struct nfs_lock_res res
;
4817 struct nfs4_lock_state
*lsp
;
4818 struct nfs_open_context
*ctx
;
4819 struct file_lock fl
;
4820 unsigned long timestamp
;
4823 struct nfs_server
*server
;
4826 static struct nfs4_lockdata
*nfs4_alloc_lockdata(struct file_lock
*fl
,
4827 struct nfs_open_context
*ctx
, struct nfs4_lock_state
*lsp
,
4830 struct nfs4_lockdata
*p
;
4831 struct inode
*inode
= lsp
->ls_state
->inode
;
4832 struct nfs_server
*server
= NFS_SERVER(inode
);
4834 p
= kzalloc(sizeof(*p
), gfp_mask
);
4838 p
->arg
.fh
= NFS_FH(inode
);
4840 p
->arg
.open_seqid
= nfs_alloc_seqid(&lsp
->ls_state
->owner
->so_seqid
, gfp_mask
);
4841 if (p
->arg
.open_seqid
== NULL
)
4843 p
->arg
.lock_seqid
= nfs_alloc_seqid(&lsp
->ls_seqid
, gfp_mask
);
4844 if (p
->arg
.lock_seqid
== NULL
)
4845 goto out_free_seqid
;
4846 p
->arg
.lock_stateid
= &lsp
->ls_stateid
;
4847 p
->arg
.lock_owner
.clientid
= server
->nfs_client
->cl_clientid
;
4848 p
->arg
.lock_owner
.id
= lsp
->ls_seqid
.owner_id
;
4849 p
->arg
.lock_owner
.s_dev
= server
->s_dev
;
4850 p
->res
.lock_seqid
= p
->arg
.lock_seqid
;
4853 atomic_inc(&lsp
->ls_count
);
4854 p
->ctx
= get_nfs_open_context(ctx
);
4855 memcpy(&p
->fl
, fl
, sizeof(p
->fl
));
4858 nfs_free_seqid(p
->arg
.open_seqid
);
4864 static void nfs4_lock_prepare(struct rpc_task
*task
, void *calldata
)
4866 struct nfs4_lockdata
*data
= calldata
;
4867 struct nfs4_state
*state
= data
->lsp
->ls_state
;
4869 dprintk("%s: begin!\n", __func__
);
4870 if (nfs_wait_on_sequence(data
->arg
.lock_seqid
, task
) != 0)
4872 /* Do we need to do an open_to_lock_owner? */
4873 if (!(data
->arg
.lock_seqid
->sequence
->flags
& NFS_SEQID_CONFIRMED
)) {
4874 if (nfs_wait_on_sequence(data
->arg
.open_seqid
, task
) != 0) {
4875 goto out_release_lock_seqid
;
4877 data
->arg
.open_stateid
= &state
->open_stateid
;
4878 data
->arg
.new_lock_owner
= 1;
4879 data
->res
.open_seqid
= data
->arg
.open_seqid
;
4881 data
->arg
.new_lock_owner
= 0;
4882 if (!nfs4_valid_open_stateid(state
)) {
4883 data
->rpc_status
= -EBADF
;
4884 task
->tk_action
= NULL
;
4885 goto out_release_open_seqid
;
4887 data
->timestamp
= jiffies
;
4888 if (nfs4_setup_sequence(data
->server
,
4889 &data
->arg
.seq_args
,
4893 out_release_open_seqid
:
4894 nfs_release_seqid(data
->arg
.open_seqid
);
4895 out_release_lock_seqid
:
4896 nfs_release_seqid(data
->arg
.lock_seqid
);
4898 nfs4_sequence_done(task
, &data
->res
.seq_res
);
4899 dprintk("%s: done!, ret = %d\n", __func__
, data
->rpc_status
);
4902 static void nfs4_lock_done(struct rpc_task
*task
, void *calldata
)
4904 struct nfs4_lockdata
*data
= calldata
;
4906 dprintk("%s: begin!\n", __func__
);
4908 if (!nfs4_sequence_done(task
, &data
->res
.seq_res
))
4911 data
->rpc_status
= task
->tk_status
;
4912 if (data
->arg
.new_lock_owner
!= 0) {
4913 if (data
->rpc_status
== 0)
4914 nfs_confirm_seqid(&data
->lsp
->ls_seqid
, 0);
4918 if (data
->rpc_status
== 0) {
4919 nfs4_stateid_copy(&data
->lsp
->ls_stateid
, &data
->res
.stateid
);
4920 set_bit(NFS_LOCK_INITIALIZED
, &data
->lsp
->ls_flags
);
4921 renew_lease(NFS_SERVER(data
->ctx
->dentry
->d_inode
), data
->timestamp
);
4924 dprintk("%s: done, ret = %d!\n", __func__
, data
->rpc_status
);
4927 static void nfs4_lock_release(void *calldata
)
4929 struct nfs4_lockdata
*data
= calldata
;
4931 dprintk("%s: begin!\n", __func__
);
4932 nfs_free_seqid(data
->arg
.open_seqid
);
4933 if (data
->cancelled
!= 0) {
4934 struct rpc_task
*task
;
4935 task
= nfs4_do_unlck(&data
->fl
, data
->ctx
, data
->lsp
,
4936 data
->arg
.lock_seqid
);
4938 rpc_put_task_async(task
);
4939 dprintk("%s: cancelling lock!\n", __func__
);
4941 nfs_free_seqid(data
->arg
.lock_seqid
);
4942 nfs4_put_lock_state(data
->lsp
);
4943 put_nfs_open_context(data
->ctx
);
4945 dprintk("%s: done!\n", __func__
);
4948 static const struct rpc_call_ops nfs4_lock_ops
= {
4949 .rpc_call_prepare
= nfs4_lock_prepare
,
4950 .rpc_call_done
= nfs4_lock_done
,
4951 .rpc_release
= nfs4_lock_release
,
4954 static void nfs4_handle_setlk_error(struct nfs_server
*server
, struct nfs4_lock_state
*lsp
, int new_lock_owner
, int error
)
4957 case -NFS4ERR_ADMIN_REVOKED
:
4958 case -NFS4ERR_BAD_STATEID
:
4959 lsp
->ls_seqid
.flags
&= ~NFS_SEQID_CONFIRMED
;
4960 if (new_lock_owner
!= 0 ||
4961 test_bit(NFS_LOCK_INITIALIZED
, &lsp
->ls_flags
) != 0)
4962 nfs4_schedule_stateid_recovery(server
, lsp
->ls_state
);
4964 case -NFS4ERR_STALE_STATEID
:
4965 lsp
->ls_seqid
.flags
&= ~NFS_SEQID_CONFIRMED
;
4966 case -NFS4ERR_EXPIRED
:
4967 nfs4_schedule_lease_recovery(server
->nfs_client
);
4971 static int _nfs4_do_setlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*fl
, int recovery_type
)
4973 struct nfs4_lockdata
*data
;
4974 struct rpc_task
*task
;
4975 struct rpc_message msg
= {
4976 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOCK
],
4977 .rpc_cred
= state
->owner
->so_cred
,
4979 struct rpc_task_setup task_setup_data
= {
4980 .rpc_client
= NFS_CLIENT(state
->inode
),
4981 .rpc_message
= &msg
,
4982 .callback_ops
= &nfs4_lock_ops
,
4983 .workqueue
= nfsiod_workqueue
,
4984 .flags
= RPC_TASK_ASYNC
,
4988 dprintk("%s: begin!\n", __func__
);
4989 data
= nfs4_alloc_lockdata(fl
, nfs_file_open_context(fl
->fl_file
),
4990 fl
->fl_u
.nfs4_fl
.owner
,
4991 recovery_type
== NFS_LOCK_NEW
? GFP_KERNEL
: GFP_NOFS
);
4995 data
->arg
.block
= 1;
4996 nfs41_init_sequence(&data
->arg
.seq_args
, &data
->res
.seq_res
, 1);
4997 msg
.rpc_argp
= &data
->arg
;
4998 msg
.rpc_resp
= &data
->res
;
4999 task_setup_data
.callback_data
= data
;
5000 if (recovery_type
> NFS_LOCK_NEW
) {
5001 if (recovery_type
== NFS_LOCK_RECLAIM
)
5002 data
->arg
.reclaim
= NFS_LOCK_RECLAIM
;
5003 nfs4_set_sequence_privileged(&data
->arg
.seq_args
);
5005 task
= rpc_run_task(&task_setup_data
);
5007 return PTR_ERR(task
);
5008 ret
= nfs4_wait_for_completion_rpc_task(task
);
5010 ret
= data
->rpc_status
;
5012 nfs4_handle_setlk_error(data
->server
, data
->lsp
,
5013 data
->arg
.new_lock_owner
, ret
);
5015 data
->cancelled
= 1;
5017 dprintk("%s: done, ret = %d!\n", __func__
, ret
);
5021 static int nfs4_lock_reclaim(struct nfs4_state
*state
, struct file_lock
*request
)
5023 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
5024 struct nfs4_exception exception
= {
5025 .inode
= state
->inode
,
5030 /* Cache the lock if possible... */
5031 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) != 0)
5033 err
= _nfs4_do_setlk(state
, F_SETLK
, request
, NFS_LOCK_RECLAIM
);
5034 if (err
!= -NFS4ERR_DELAY
)
5036 nfs4_handle_exception(server
, err
, &exception
);
5037 } while (exception
.retry
);
5041 static int nfs4_lock_expired(struct nfs4_state
*state
, struct file_lock
*request
)
5043 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
5044 struct nfs4_exception exception
= {
5045 .inode
= state
->inode
,
5049 err
= nfs4_set_lock_state(state
, request
);
5053 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) != 0)
5055 err
= _nfs4_do_setlk(state
, F_SETLK
, request
, NFS_LOCK_EXPIRED
);
5059 case -NFS4ERR_GRACE
:
5060 case -NFS4ERR_DELAY
:
5061 nfs4_handle_exception(server
, err
, &exception
);
5064 } while (exception
.retry
);
5069 #if defined(CONFIG_NFS_V4_1)
5071 * nfs41_check_expired_locks - possibly free a lock stateid
5073 * @state: NFSv4 state for an inode
5075 * Returns NFS_OK if recovery for this stateid is now finished.
5076 * Otherwise a negative NFS4ERR value is returned.
5078 static int nfs41_check_expired_locks(struct nfs4_state
*state
)
5080 int status
, ret
= -NFS4ERR_BAD_STATEID
;
5081 struct nfs4_lock_state
*lsp
;
5082 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
5084 list_for_each_entry(lsp
, &state
->lock_states
, ls_locks
) {
5085 if (test_bit(NFS_LOCK_INITIALIZED
, &lsp
->ls_flags
)) {
5086 status
= nfs41_test_stateid(server
, &lsp
->ls_stateid
);
5087 if (status
!= NFS_OK
) {
5088 /* Free the stateid unless the server
5089 * informs us the stateid is unrecognized. */
5090 if (status
!= -NFS4ERR_BAD_STATEID
)
5091 nfs41_free_stateid(server
,
5093 clear_bit(NFS_LOCK_INITIALIZED
, &lsp
->ls_flags
);
5102 static int nfs41_lock_expired(struct nfs4_state
*state
, struct file_lock
*request
)
5104 int status
= NFS_OK
;
5106 if (test_bit(LK_STATE_IN_USE
, &state
->flags
))
5107 status
= nfs41_check_expired_locks(state
);
5108 if (status
!= NFS_OK
)
5109 status
= nfs4_lock_expired(state
, request
);
5114 static int _nfs4_proc_setlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
5116 struct nfs4_state_owner
*sp
= state
->owner
;
5117 struct nfs_inode
*nfsi
= NFS_I(state
->inode
);
5118 unsigned char fl_flags
= request
->fl_flags
;
5120 int status
= -ENOLCK
;
5122 if ((fl_flags
& FL_POSIX
) &&
5123 !test_bit(NFS_STATE_POSIX_LOCKS
, &state
->flags
))
5125 /* Is this a delegated open? */
5126 status
= nfs4_set_lock_state(state
, request
);
5129 request
->fl_flags
|= FL_ACCESS
;
5130 status
= do_vfs_lock(request
->fl_file
, request
);
5133 down_read(&nfsi
->rwsem
);
5134 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
)) {
5135 /* Yes: cache locks! */
5136 /* ...but avoid races with delegation recall... */
5137 request
->fl_flags
= fl_flags
& ~FL_SLEEP
;
5138 status
= do_vfs_lock(request
->fl_file
, request
);
5141 seq
= raw_seqcount_begin(&sp
->so_reclaim_seqcount
);
5142 up_read(&nfsi
->rwsem
);
5143 status
= _nfs4_do_setlk(state
, cmd
, request
, NFS_LOCK_NEW
);
5146 down_read(&nfsi
->rwsem
);
5147 if (read_seqcount_retry(&sp
->so_reclaim_seqcount
, seq
)) {
5148 status
= -NFS4ERR_DELAY
;
5151 /* Note: we always want to sleep here! */
5152 request
->fl_flags
= fl_flags
| FL_SLEEP
;
5153 if (do_vfs_lock(request
->fl_file
, request
) < 0)
5154 printk(KERN_WARNING
"NFS: %s: VFS is out of sync with lock "
5155 "manager!\n", __func__
);
5157 up_read(&nfsi
->rwsem
);
5159 request
->fl_flags
= fl_flags
;
5163 static int nfs4_proc_setlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
5165 struct nfs4_exception exception
= {
5167 .inode
= state
->inode
,
5172 err
= _nfs4_proc_setlk(state
, cmd
, request
);
5173 if (err
== -NFS4ERR_DENIED
)
5175 err
= nfs4_handle_exception(NFS_SERVER(state
->inode
),
5177 } while (exception
.retry
);
5182 nfs4_proc_lock(struct file
*filp
, int cmd
, struct file_lock
*request
)
5184 struct nfs_open_context
*ctx
;
5185 struct nfs4_state
*state
;
5186 unsigned long timeout
= NFS4_LOCK_MINTIMEOUT
;
5189 /* verify open state */
5190 ctx
= nfs_file_open_context(filp
);
5193 if (request
->fl_start
< 0 || request
->fl_end
< 0)
5196 if (IS_GETLK(cmd
)) {
5198 return nfs4_proc_getlk(state
, F_GETLK
, request
);
5202 if (!(IS_SETLK(cmd
) || IS_SETLKW(cmd
)))
5205 if (request
->fl_type
== F_UNLCK
) {
5207 return nfs4_proc_unlck(state
, cmd
, request
);
5214 * Don't rely on the VFS having checked the file open mode,
5215 * since it won't do this for flock() locks.
5217 switch (request
->fl_type
) {
5219 if (!(filp
->f_mode
& FMODE_READ
))
5223 if (!(filp
->f_mode
& FMODE_WRITE
))
5228 status
= nfs4_proc_setlk(state
, cmd
, request
);
5229 if ((status
!= -EAGAIN
) || IS_SETLK(cmd
))
5231 timeout
= nfs4_set_lock_task_retry(timeout
);
5232 status
= -ERESTARTSYS
;
5235 } while(status
< 0);
5239 int nfs4_lock_delegation_recall(struct file_lock
*fl
, struct nfs4_state
*state
, const nfs4_stateid
*stateid
)
5241 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
5244 err
= nfs4_set_lock_state(state
, fl
);
5247 err
= _nfs4_do_setlk(state
, F_SETLK
, fl
, NFS_LOCK_NEW
);
5248 return nfs4_handle_delegation_recall_error(server
, state
, stateid
, err
);
5251 struct nfs_release_lockowner_data
{
5252 struct nfs4_lock_state
*lsp
;
5253 struct nfs_server
*server
;
5254 struct nfs_release_lockowner_args args
;
5257 static void nfs4_release_lockowner_release(void *calldata
)
5259 struct nfs_release_lockowner_data
*data
= calldata
;
5260 nfs4_free_lock_state(data
->server
, data
->lsp
);
5264 static const struct rpc_call_ops nfs4_release_lockowner_ops
= {
5265 .rpc_release
= nfs4_release_lockowner_release
,
5268 static int nfs4_release_lockowner(struct nfs_server
*server
, struct nfs4_lock_state
*lsp
)
5270 struct nfs_release_lockowner_data
*data
;
5271 struct rpc_message msg
= {
5272 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RELEASE_LOCKOWNER
],
5275 if (server
->nfs_client
->cl_mvops
->minor_version
!= 0)
5277 data
= kmalloc(sizeof(*data
), GFP_NOFS
);
5281 data
->server
= server
;
5282 data
->args
.lock_owner
.clientid
= server
->nfs_client
->cl_clientid
;
5283 data
->args
.lock_owner
.id
= lsp
->ls_seqid
.owner_id
;
5284 data
->args
.lock_owner
.s_dev
= server
->s_dev
;
5285 msg
.rpc_argp
= &data
->args
;
5286 rpc_call_async(server
->client
, &msg
, 0, &nfs4_release_lockowner_ops
, data
);
5290 #define XATTR_NAME_NFSV4_ACL "system.nfs4_acl"
5292 static int nfs4_xattr_set_nfs4_acl(struct dentry
*dentry
, const char *key
,
5293 const void *buf
, size_t buflen
,
5294 int flags
, int type
)
5296 if (strcmp(key
, "") != 0)
5299 return nfs4_proc_set_acl(dentry
->d_inode
, buf
, buflen
);
5302 static int nfs4_xattr_get_nfs4_acl(struct dentry
*dentry
, const char *key
,
5303 void *buf
, size_t buflen
, int type
)
5305 if (strcmp(key
, "") != 0)
5308 return nfs4_proc_get_acl(dentry
->d_inode
, buf
, buflen
);
5311 static size_t nfs4_xattr_list_nfs4_acl(struct dentry
*dentry
, char *list
,
5312 size_t list_len
, const char *name
,
5313 size_t name_len
, int type
)
5315 size_t len
= sizeof(XATTR_NAME_NFSV4_ACL
);
5317 if (!nfs4_server_supports_acls(NFS_SERVER(dentry
->d_inode
)))
5320 if (list
&& len
<= list_len
)
5321 memcpy(list
, XATTR_NAME_NFSV4_ACL
, len
);
5326 * nfs_fhget will use either the mounted_on_fileid or the fileid
5328 static void nfs_fixup_referral_attributes(struct nfs_fattr
*fattr
)
5330 if (!(((fattr
->valid
& NFS_ATTR_FATTR_MOUNTED_ON_FILEID
) ||
5331 (fattr
->valid
& NFS_ATTR_FATTR_FILEID
)) &&
5332 (fattr
->valid
& NFS_ATTR_FATTR_FSID
) &&
5333 (fattr
->valid
& NFS_ATTR_FATTR_V4_LOCATIONS
)))
5336 fattr
->valid
|= NFS_ATTR_FATTR_TYPE
| NFS_ATTR_FATTR_MODE
|
5337 NFS_ATTR_FATTR_NLINK
| NFS_ATTR_FATTR_V4_REFERRAL
;
5338 fattr
->mode
= S_IFDIR
| S_IRUGO
| S_IXUGO
;
5342 static int _nfs4_proc_fs_locations(struct rpc_clnt
*client
, struct inode
*dir
,
5343 const struct qstr
*name
,
5344 struct nfs4_fs_locations
*fs_locations
,
5347 struct nfs_server
*server
= NFS_SERVER(dir
);
5349 [0] = FATTR4_WORD0_FSID
| FATTR4_WORD0_FS_LOCATIONS
,
5351 struct nfs4_fs_locations_arg args
= {
5352 .dir_fh
= NFS_FH(dir
),
5357 struct nfs4_fs_locations_res res
= {
5358 .fs_locations
= fs_locations
,
5360 struct rpc_message msg
= {
5361 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_FS_LOCATIONS
],
5367 dprintk("%s: start\n", __func__
);
5369 /* Ask for the fileid of the absent filesystem if mounted_on_fileid
5370 * is not supported */
5371 if (NFS_SERVER(dir
)->attr_bitmask
[1] & FATTR4_WORD1_MOUNTED_ON_FILEID
)
5372 bitmask
[1] |= FATTR4_WORD1_MOUNTED_ON_FILEID
;
5374 bitmask
[0] |= FATTR4_WORD0_FILEID
;
5376 nfs_fattr_init(&fs_locations
->fattr
);
5377 fs_locations
->server
= server
;
5378 fs_locations
->nlocations
= 0;
5379 status
= nfs4_call_sync(client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
5380 dprintk("%s: returned status = %d\n", __func__
, status
);
5384 int nfs4_proc_fs_locations(struct rpc_clnt
*client
, struct inode
*dir
,
5385 const struct qstr
*name
,
5386 struct nfs4_fs_locations
*fs_locations
,
5389 struct nfs4_exception exception
= { };
5392 err
= nfs4_handle_exception(NFS_SERVER(dir
),
5393 _nfs4_proc_fs_locations(client
, dir
, name
, fs_locations
, page
),
5395 } while (exception
.retry
);
5399 static int _nfs4_proc_secinfo(struct inode
*dir
, const struct qstr
*name
, struct nfs4_secinfo_flavors
*flavors
)
5402 struct nfs4_secinfo_arg args
= {
5403 .dir_fh
= NFS_FH(dir
),
5406 struct nfs4_secinfo_res res
= {
5409 struct rpc_message msg
= {
5410 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SECINFO
],
5415 dprintk("NFS call secinfo %s\n", name
->name
);
5416 status
= nfs4_call_sync(NFS_SERVER(dir
)->client
, NFS_SERVER(dir
), &msg
, &args
.seq_args
, &res
.seq_res
, 0);
5417 dprintk("NFS reply secinfo: %d\n", status
);
5421 int nfs4_proc_secinfo(struct inode
*dir
, const struct qstr
*name
,
5422 struct nfs4_secinfo_flavors
*flavors
)
5424 struct nfs4_exception exception
= { };
5427 err
= nfs4_handle_exception(NFS_SERVER(dir
),
5428 _nfs4_proc_secinfo(dir
, name
, flavors
),
5430 } while (exception
.retry
);
5434 #ifdef CONFIG_NFS_V4_1
5436 * Check the exchange flags returned by the server for invalid flags, having
5437 * both PNFS and NON_PNFS flags set, and not having one of NON_PNFS, PNFS, or
5440 static int nfs4_check_cl_exchange_flags(u32 flags
)
5442 if (flags
& ~EXCHGID4_FLAG_MASK_R
)
5444 if ((flags
& EXCHGID4_FLAG_USE_PNFS_MDS
) &&
5445 (flags
& EXCHGID4_FLAG_USE_NON_PNFS
))
5447 if (!(flags
& (EXCHGID4_FLAG_MASK_PNFS
)))
5451 return -NFS4ERR_INVAL
;
5455 nfs41_same_server_scope(struct nfs41_server_scope
*a
,
5456 struct nfs41_server_scope
*b
)
5458 if (a
->server_scope_sz
== b
->server_scope_sz
&&
5459 memcmp(a
->server_scope
, b
->server_scope
, a
->server_scope_sz
) == 0)
5466 * nfs4_proc_bind_conn_to_session()
5468 * The 4.1 client currently uses the same TCP connection for the
5469 * fore and backchannel.
5471 int nfs4_proc_bind_conn_to_session(struct nfs_client
*clp
, struct rpc_cred
*cred
)
5474 struct nfs41_bind_conn_to_session_res res
;
5475 struct rpc_message msg
= {
5477 &nfs4_procedures
[NFSPROC4_CLNT_BIND_CONN_TO_SESSION
],
5483 dprintk("--> %s\n", __func__
);
5485 res
.session
= kzalloc(sizeof(struct nfs4_session
), GFP_NOFS
);
5486 if (unlikely(res
.session
== NULL
)) {
5491 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
5493 if (memcmp(res
.session
->sess_id
.data
,
5494 clp
->cl_session
->sess_id
.data
, NFS4_MAX_SESSIONID_LEN
)) {
5495 dprintk("NFS: %s: Session ID mismatch\n", __func__
);
5499 if (res
.dir
!= NFS4_CDFS4_BOTH
) {
5500 dprintk("NFS: %s: Unexpected direction from server\n",
5505 if (res
.use_conn_in_rdma_mode
) {
5506 dprintk("NFS: %s: Server returned RDMA mode = true\n",
5515 dprintk("<-- %s status= %d\n", __func__
, status
);
5520 * nfs4_proc_exchange_id()
5522 * Returns zero, a negative errno, or a negative NFS4ERR status code.
5524 * Since the clientid has expired, all compounds using sessions
5525 * associated with the stale clientid will be returning
5526 * NFS4ERR_BADSESSION in the sequence operation, and will therefore
5527 * be in some phase of session reset.
5529 int nfs4_proc_exchange_id(struct nfs_client
*clp
, struct rpc_cred
*cred
)
5531 nfs4_verifier verifier
;
5532 struct nfs41_exchange_id_args args
= {
5533 .verifier
= &verifier
,
5535 .flags
= EXCHGID4_FLAG_SUPP_MOVED_REFER
,
5537 struct nfs41_exchange_id_res res
= {
5541 struct rpc_message msg
= {
5542 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_EXCHANGE_ID
],
5548 nfs4_init_boot_verifier(clp
, &verifier
);
5549 args
.id_len
= nfs4_init_uniform_client_string(clp
, args
.id
,
5551 dprintk("NFS call exchange_id auth=%s, '%.*s'\n",
5552 clp
->cl_rpcclient
->cl_auth
->au_ops
->au_name
,
5553 args
.id_len
, args
.id
);
5555 res
.server_owner
= kzalloc(sizeof(struct nfs41_server_owner
),
5557 if (unlikely(res
.server_owner
== NULL
)) {
5562 res
.server_scope
= kzalloc(sizeof(struct nfs41_server_scope
),
5564 if (unlikely(res
.server_scope
== NULL
)) {
5566 goto out_server_owner
;
5569 res
.impl_id
= kzalloc(sizeof(struct nfs41_impl_id
), GFP_NOFS
);
5570 if (unlikely(res
.impl_id
== NULL
)) {
5572 goto out_server_scope
;
5575 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
5577 status
= nfs4_check_cl_exchange_flags(res
.flags
);
5580 clp
->cl_clientid
= res
.clientid
;
5581 clp
->cl_exchange_flags
= (res
.flags
& ~EXCHGID4_FLAG_CONFIRMED_R
);
5582 if (!(res
.flags
& EXCHGID4_FLAG_CONFIRMED_R
))
5583 clp
->cl_seqid
= res
.seqid
;
5585 kfree(clp
->cl_serverowner
);
5586 clp
->cl_serverowner
= res
.server_owner
;
5587 res
.server_owner
= NULL
;
5589 /* use the most recent implementation id */
5590 kfree(clp
->cl_implid
);
5591 clp
->cl_implid
= res
.impl_id
;
5593 if (clp
->cl_serverscope
!= NULL
&&
5594 !nfs41_same_server_scope(clp
->cl_serverscope
,
5595 res
.server_scope
)) {
5596 dprintk("%s: server_scope mismatch detected\n",
5598 set_bit(NFS4CLNT_SERVER_SCOPE_MISMATCH
, &clp
->cl_state
);
5599 kfree(clp
->cl_serverscope
);
5600 clp
->cl_serverscope
= NULL
;
5603 if (clp
->cl_serverscope
== NULL
) {
5604 clp
->cl_serverscope
= res
.server_scope
;
5611 kfree(res
.server_owner
);
5613 kfree(res
.server_scope
);
5615 if (clp
->cl_implid
!= NULL
)
5616 dprintk("NFS reply exchange_id: Server Implementation ID: "
5617 "domain: %s, name: %s, date: %llu,%u\n",
5618 clp
->cl_implid
->domain
, clp
->cl_implid
->name
,
5619 clp
->cl_implid
->date
.seconds
,
5620 clp
->cl_implid
->date
.nseconds
);
5621 dprintk("NFS reply exchange_id: %d\n", status
);
5625 static int _nfs4_proc_destroy_clientid(struct nfs_client
*clp
,
5626 struct rpc_cred
*cred
)
5628 struct rpc_message msg
= {
5629 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_DESTROY_CLIENTID
],
5635 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
5637 dprintk("NFS: Got error %d from the server %s on "
5638 "DESTROY_CLIENTID.", status
, clp
->cl_hostname
);
5642 static int nfs4_proc_destroy_clientid(struct nfs_client
*clp
,
5643 struct rpc_cred
*cred
)
5648 for (loop
= NFS4_MAX_LOOP_ON_RECOVER
; loop
!= 0; loop
--) {
5649 ret
= _nfs4_proc_destroy_clientid(clp
, cred
);
5651 case -NFS4ERR_DELAY
:
5652 case -NFS4ERR_CLIENTID_BUSY
:
5662 int nfs4_destroy_clientid(struct nfs_client
*clp
)
5664 struct rpc_cred
*cred
;
5667 if (clp
->cl_mvops
->minor_version
< 1)
5669 if (clp
->cl_exchange_flags
== 0)
5671 if (clp
->cl_preserve_clid
)
5673 cred
= nfs4_get_exchange_id_cred(clp
);
5674 ret
= nfs4_proc_destroy_clientid(clp
, cred
);
5679 case -NFS4ERR_STALE_CLIENTID
:
5680 clp
->cl_exchange_flags
= 0;
5686 struct nfs4_get_lease_time_data
{
5687 struct nfs4_get_lease_time_args
*args
;
5688 struct nfs4_get_lease_time_res
*res
;
5689 struct nfs_client
*clp
;
5692 static void nfs4_get_lease_time_prepare(struct rpc_task
*task
,
5695 struct nfs4_get_lease_time_data
*data
=
5696 (struct nfs4_get_lease_time_data
*)calldata
;
5698 dprintk("--> %s\n", __func__
);
5699 /* just setup sequence, do not trigger session recovery
5700 since we're invoked within one */
5701 nfs41_setup_sequence(data
->clp
->cl_session
,
5702 &data
->args
->la_seq_args
,
5703 &data
->res
->lr_seq_res
,
5705 dprintk("<-- %s\n", __func__
);
5709 * Called from nfs4_state_manager thread for session setup, so don't recover
5710 * from sequence operation or clientid errors.
5712 static void nfs4_get_lease_time_done(struct rpc_task
*task
, void *calldata
)
5714 struct nfs4_get_lease_time_data
*data
=
5715 (struct nfs4_get_lease_time_data
*)calldata
;
5717 dprintk("--> %s\n", __func__
);
5718 if (!nfs41_sequence_done(task
, &data
->res
->lr_seq_res
))
5720 switch (task
->tk_status
) {
5721 case -NFS4ERR_DELAY
:
5722 case -NFS4ERR_GRACE
:
5723 dprintk("%s Retry: tk_status %d\n", __func__
, task
->tk_status
);
5724 rpc_delay(task
, NFS4_POLL_RETRY_MIN
);
5725 task
->tk_status
= 0;
5727 case -NFS4ERR_RETRY_UNCACHED_REP
:
5728 rpc_restart_call_prepare(task
);
5731 dprintk("<-- %s\n", __func__
);
5734 static const struct rpc_call_ops nfs4_get_lease_time_ops
= {
5735 .rpc_call_prepare
= nfs4_get_lease_time_prepare
,
5736 .rpc_call_done
= nfs4_get_lease_time_done
,
5739 int nfs4_proc_get_lease_time(struct nfs_client
*clp
, struct nfs_fsinfo
*fsinfo
)
5741 struct rpc_task
*task
;
5742 struct nfs4_get_lease_time_args args
;
5743 struct nfs4_get_lease_time_res res
= {
5744 .lr_fsinfo
= fsinfo
,
5746 struct nfs4_get_lease_time_data data
= {
5751 struct rpc_message msg
= {
5752 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GET_LEASE_TIME
],
5756 struct rpc_task_setup task_setup
= {
5757 .rpc_client
= clp
->cl_rpcclient
,
5758 .rpc_message
= &msg
,
5759 .callback_ops
= &nfs4_get_lease_time_ops
,
5760 .callback_data
= &data
,
5761 .flags
= RPC_TASK_TIMEOUT
,
5765 nfs41_init_sequence(&args
.la_seq_args
, &res
.lr_seq_res
, 0);
5766 nfs4_set_sequence_privileged(&args
.la_seq_args
);
5767 dprintk("--> %s\n", __func__
);
5768 task
= rpc_run_task(&task_setup
);
5771 status
= PTR_ERR(task
);
5773 status
= task
->tk_status
;
5776 dprintk("<-- %s return %d\n", __func__
, status
);
5782 * Initialize the values to be used by the client in CREATE_SESSION
5783 * If nfs4_init_session set the fore channel request and response sizes,
5786 * Set the back channel max_resp_sz_cached to zero to force the client to
5787 * always set csa_cachethis to FALSE because the current implementation
5788 * of the back channel DRC only supports caching the CB_SEQUENCE operation.
5790 static void nfs4_init_channel_attrs(struct nfs41_create_session_args
*args
)
5792 struct nfs4_session
*session
= args
->client
->cl_session
;
5793 unsigned int mxrqst_sz
= session
->fc_target_max_rqst_sz
,
5794 mxresp_sz
= session
->fc_target_max_resp_sz
;
5797 mxrqst_sz
= NFS_MAX_FILE_IO_SIZE
;
5799 mxresp_sz
= NFS_MAX_FILE_IO_SIZE
;
5800 /* Fore channel attributes */
5801 args
->fc_attrs
.max_rqst_sz
= mxrqst_sz
;
5802 args
->fc_attrs
.max_resp_sz
= mxresp_sz
;
5803 args
->fc_attrs
.max_ops
= NFS4_MAX_OPS
;
5804 args
->fc_attrs
.max_reqs
= max_session_slots
;
5806 dprintk("%s: Fore Channel : max_rqst_sz=%u max_resp_sz=%u "
5807 "max_ops=%u max_reqs=%u\n",
5809 args
->fc_attrs
.max_rqst_sz
, args
->fc_attrs
.max_resp_sz
,
5810 args
->fc_attrs
.max_ops
, args
->fc_attrs
.max_reqs
);
5812 /* Back channel attributes */
5813 args
->bc_attrs
.max_rqst_sz
= PAGE_SIZE
;
5814 args
->bc_attrs
.max_resp_sz
= PAGE_SIZE
;
5815 args
->bc_attrs
.max_resp_sz_cached
= 0;
5816 args
->bc_attrs
.max_ops
= NFS4_MAX_BACK_CHANNEL_OPS
;
5817 args
->bc_attrs
.max_reqs
= 1;
5819 dprintk("%s: Back Channel : max_rqst_sz=%u max_resp_sz=%u "
5820 "max_resp_sz_cached=%u max_ops=%u max_reqs=%u\n",
5822 args
->bc_attrs
.max_rqst_sz
, args
->bc_attrs
.max_resp_sz
,
5823 args
->bc_attrs
.max_resp_sz_cached
, args
->bc_attrs
.max_ops
,
5824 args
->bc_attrs
.max_reqs
);
5827 static int nfs4_verify_fore_channel_attrs(struct nfs41_create_session_args
*args
, struct nfs4_session
*session
)
5829 struct nfs4_channel_attrs
*sent
= &args
->fc_attrs
;
5830 struct nfs4_channel_attrs
*rcvd
= &session
->fc_attrs
;
5832 if (rcvd
->max_resp_sz
> sent
->max_resp_sz
)
5835 * Our requested max_ops is the minimum we need; we're not
5836 * prepared to break up compounds into smaller pieces than that.
5837 * So, no point even trying to continue if the server won't
5840 if (rcvd
->max_ops
< sent
->max_ops
)
5842 if (rcvd
->max_reqs
== 0)
5844 if (rcvd
->max_reqs
> NFS4_MAX_SLOT_TABLE
)
5845 rcvd
->max_reqs
= NFS4_MAX_SLOT_TABLE
;
5849 static int nfs4_verify_back_channel_attrs(struct nfs41_create_session_args
*args
, struct nfs4_session
*session
)
5851 struct nfs4_channel_attrs
*sent
= &args
->bc_attrs
;
5852 struct nfs4_channel_attrs
*rcvd
= &session
->bc_attrs
;
5854 if (rcvd
->max_rqst_sz
> sent
->max_rqst_sz
)
5856 if (rcvd
->max_resp_sz
< sent
->max_resp_sz
)
5858 if (rcvd
->max_resp_sz_cached
> sent
->max_resp_sz_cached
)
5860 /* These would render the backchannel useless: */
5861 if (rcvd
->max_ops
!= sent
->max_ops
)
5863 if (rcvd
->max_reqs
!= sent
->max_reqs
)
5868 static int nfs4_verify_channel_attrs(struct nfs41_create_session_args
*args
,
5869 struct nfs4_session
*session
)
5873 ret
= nfs4_verify_fore_channel_attrs(args
, session
);
5876 return nfs4_verify_back_channel_attrs(args
, session
);
5879 static int _nfs4_proc_create_session(struct nfs_client
*clp
,
5880 struct rpc_cred
*cred
)
5882 struct nfs4_session
*session
= clp
->cl_session
;
5883 struct nfs41_create_session_args args
= {
5885 .cb_program
= NFS4_CALLBACK
,
5887 struct nfs41_create_session_res res
= {
5890 struct rpc_message msg
= {
5891 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_CREATE_SESSION
],
5898 nfs4_init_channel_attrs(&args
);
5899 args
.flags
= (SESSION4_PERSIST
| SESSION4_BACK_CHAN
);
5901 status
= rpc_call_sync(session
->clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
5904 /* Verify the session's negotiated channel_attrs values */
5905 status
= nfs4_verify_channel_attrs(&args
, session
);
5906 /* Increment the clientid slot sequence id */
5914 * Issues a CREATE_SESSION operation to the server.
5915 * It is the responsibility of the caller to verify the session is
5916 * expired before calling this routine.
5918 int nfs4_proc_create_session(struct nfs_client
*clp
, struct rpc_cred
*cred
)
5922 struct nfs4_session
*session
= clp
->cl_session
;
5924 dprintk("--> %s clp=%p session=%p\n", __func__
, clp
, session
);
5926 status
= _nfs4_proc_create_session(clp
, cred
);
5930 /* Init or reset the session slot tables */
5931 status
= nfs4_setup_session_slot_tables(session
);
5932 dprintk("slot table setup returned %d\n", status
);
5936 ptr
= (unsigned *)&session
->sess_id
.data
[0];
5937 dprintk("%s client>seqid %d sessionid %u:%u:%u:%u\n", __func__
,
5938 clp
->cl_seqid
, ptr
[0], ptr
[1], ptr
[2], ptr
[3]);
5940 dprintk("<-- %s\n", __func__
);
5945 * Issue the over-the-wire RPC DESTROY_SESSION.
5946 * The caller must serialize access to this routine.
5948 int nfs4_proc_destroy_session(struct nfs4_session
*session
,
5949 struct rpc_cred
*cred
)
5951 struct rpc_message msg
= {
5952 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_DESTROY_SESSION
],
5953 .rpc_argp
= session
,
5958 dprintk("--> nfs4_proc_destroy_session\n");
5960 /* session is still being setup */
5961 if (session
->clp
->cl_cons_state
!= NFS_CS_READY
)
5964 status
= rpc_call_sync(session
->clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
5967 dprintk("NFS: Got error %d from the server on DESTROY_SESSION. "
5968 "Session has been destroyed regardless...\n", status
);
5970 dprintk("<-- nfs4_proc_destroy_session\n");
5975 * Renew the cl_session lease.
5977 struct nfs4_sequence_data
{
5978 struct nfs_client
*clp
;
5979 struct nfs4_sequence_args args
;
5980 struct nfs4_sequence_res res
;
5983 static void nfs41_sequence_release(void *data
)
5985 struct nfs4_sequence_data
*calldata
= data
;
5986 struct nfs_client
*clp
= calldata
->clp
;
5988 if (atomic_read(&clp
->cl_count
) > 1)
5989 nfs4_schedule_state_renewal(clp
);
5990 nfs_put_client(clp
);
5994 static int nfs41_sequence_handle_errors(struct rpc_task
*task
, struct nfs_client
*clp
)
5996 switch(task
->tk_status
) {
5997 case -NFS4ERR_DELAY
:
5998 rpc_delay(task
, NFS4_POLL_RETRY_MAX
);
6001 nfs4_schedule_lease_recovery(clp
);
6006 static void nfs41_sequence_call_done(struct rpc_task
*task
, void *data
)
6008 struct nfs4_sequence_data
*calldata
= data
;
6009 struct nfs_client
*clp
= calldata
->clp
;
6011 if (!nfs41_sequence_done(task
, task
->tk_msg
.rpc_resp
))
6014 if (task
->tk_status
< 0) {
6015 dprintk("%s ERROR %d\n", __func__
, task
->tk_status
);
6016 if (atomic_read(&clp
->cl_count
) == 1)
6019 if (nfs41_sequence_handle_errors(task
, clp
) == -EAGAIN
) {
6020 rpc_restart_call_prepare(task
);
6024 dprintk("%s rpc_cred %p\n", __func__
, task
->tk_msg
.rpc_cred
);
6026 dprintk("<-- %s\n", __func__
);
6029 static void nfs41_sequence_prepare(struct rpc_task
*task
, void *data
)
6031 struct nfs4_sequence_data
*calldata
= data
;
6032 struct nfs_client
*clp
= calldata
->clp
;
6033 struct nfs4_sequence_args
*args
;
6034 struct nfs4_sequence_res
*res
;
6036 args
= task
->tk_msg
.rpc_argp
;
6037 res
= task
->tk_msg
.rpc_resp
;
6039 nfs41_setup_sequence(clp
->cl_session
, args
, res
, task
);
6042 static const struct rpc_call_ops nfs41_sequence_ops
= {
6043 .rpc_call_done
= nfs41_sequence_call_done
,
6044 .rpc_call_prepare
= nfs41_sequence_prepare
,
6045 .rpc_release
= nfs41_sequence_release
,
6048 static struct rpc_task
*_nfs41_proc_sequence(struct nfs_client
*clp
,
6049 struct rpc_cred
*cred
,
6052 struct nfs4_sequence_data
*calldata
;
6053 struct rpc_message msg
= {
6054 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SEQUENCE
],
6057 struct rpc_task_setup task_setup_data
= {
6058 .rpc_client
= clp
->cl_rpcclient
,
6059 .rpc_message
= &msg
,
6060 .callback_ops
= &nfs41_sequence_ops
,
6061 .flags
= RPC_TASK_ASYNC
| RPC_TASK_TIMEOUT
,
6064 if (!atomic_inc_not_zero(&clp
->cl_count
))
6065 return ERR_PTR(-EIO
);
6066 calldata
= kzalloc(sizeof(*calldata
), GFP_NOFS
);
6067 if (calldata
== NULL
) {
6068 nfs_put_client(clp
);
6069 return ERR_PTR(-ENOMEM
);
6071 nfs41_init_sequence(&calldata
->args
, &calldata
->res
, 0);
6073 nfs4_set_sequence_privileged(&calldata
->args
);
6074 msg
.rpc_argp
= &calldata
->args
;
6075 msg
.rpc_resp
= &calldata
->res
;
6076 calldata
->clp
= clp
;
6077 task_setup_data
.callback_data
= calldata
;
6079 return rpc_run_task(&task_setup_data
);
6082 static int nfs41_proc_async_sequence(struct nfs_client
*clp
, struct rpc_cred
*cred
, unsigned renew_flags
)
6084 struct rpc_task
*task
;
6087 if ((renew_flags
& NFS4_RENEW_TIMEOUT
) == 0)
6089 task
= _nfs41_proc_sequence(clp
, cred
, false);
6091 ret
= PTR_ERR(task
);
6093 rpc_put_task_async(task
);
6094 dprintk("<-- %s status=%d\n", __func__
, ret
);
6098 static int nfs4_proc_sequence(struct nfs_client
*clp
, struct rpc_cred
*cred
)
6100 struct rpc_task
*task
;
6103 task
= _nfs41_proc_sequence(clp
, cred
, true);
6105 ret
= PTR_ERR(task
);
6108 ret
= rpc_wait_for_completion_task(task
);
6110 struct nfs4_sequence_res
*res
= task
->tk_msg
.rpc_resp
;
6112 if (task
->tk_status
== 0)
6113 nfs41_handle_sequence_flag_errors(clp
, res
->sr_status_flags
);
6114 ret
= task
->tk_status
;
6118 dprintk("<-- %s status=%d\n", __func__
, ret
);
6122 struct nfs4_reclaim_complete_data
{
6123 struct nfs_client
*clp
;
6124 struct nfs41_reclaim_complete_args arg
;
6125 struct nfs41_reclaim_complete_res res
;
6128 static void nfs4_reclaim_complete_prepare(struct rpc_task
*task
, void *data
)
6130 struct nfs4_reclaim_complete_data
*calldata
= data
;
6132 nfs41_setup_sequence(calldata
->clp
->cl_session
,
6133 &calldata
->arg
.seq_args
,
6134 &calldata
->res
.seq_res
,
6138 static int nfs41_reclaim_complete_handle_errors(struct rpc_task
*task
, struct nfs_client
*clp
)
6140 switch(task
->tk_status
) {
6142 case -NFS4ERR_COMPLETE_ALREADY
:
6143 case -NFS4ERR_WRONG_CRED
: /* What to do here? */
6145 case -NFS4ERR_DELAY
:
6146 rpc_delay(task
, NFS4_POLL_RETRY_MAX
);
6148 case -NFS4ERR_RETRY_UNCACHED_REP
:
6151 nfs4_schedule_lease_recovery(clp
);
6156 static void nfs4_reclaim_complete_done(struct rpc_task
*task
, void *data
)
6158 struct nfs4_reclaim_complete_data
*calldata
= data
;
6159 struct nfs_client
*clp
= calldata
->clp
;
6160 struct nfs4_sequence_res
*res
= &calldata
->res
.seq_res
;
6162 dprintk("--> %s\n", __func__
);
6163 if (!nfs41_sequence_done(task
, res
))
6166 if (nfs41_reclaim_complete_handle_errors(task
, clp
) == -EAGAIN
) {
6167 rpc_restart_call_prepare(task
);
6170 dprintk("<-- %s\n", __func__
);
6173 static void nfs4_free_reclaim_complete_data(void *data
)
6175 struct nfs4_reclaim_complete_data
*calldata
= data
;
6180 static const struct rpc_call_ops nfs4_reclaim_complete_call_ops
= {
6181 .rpc_call_prepare
= nfs4_reclaim_complete_prepare
,
6182 .rpc_call_done
= nfs4_reclaim_complete_done
,
6183 .rpc_release
= nfs4_free_reclaim_complete_data
,
6187 * Issue a global reclaim complete.
6189 static int nfs41_proc_reclaim_complete(struct nfs_client
*clp
)
6191 struct nfs4_reclaim_complete_data
*calldata
;
6192 struct rpc_task
*task
;
6193 struct rpc_message msg
= {
6194 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RECLAIM_COMPLETE
],
6196 struct rpc_task_setup task_setup_data
= {
6197 .rpc_client
= clp
->cl_rpcclient
,
6198 .rpc_message
= &msg
,
6199 .callback_ops
= &nfs4_reclaim_complete_call_ops
,
6200 .flags
= RPC_TASK_ASYNC
,
6202 int status
= -ENOMEM
;
6204 dprintk("--> %s\n", __func__
);
6205 calldata
= kzalloc(sizeof(*calldata
), GFP_NOFS
);
6206 if (calldata
== NULL
)
6208 calldata
->clp
= clp
;
6209 calldata
->arg
.one_fs
= 0;
6211 nfs41_init_sequence(&calldata
->arg
.seq_args
, &calldata
->res
.seq_res
, 0);
6212 nfs4_set_sequence_privileged(&calldata
->arg
.seq_args
);
6213 msg
.rpc_argp
= &calldata
->arg
;
6214 msg
.rpc_resp
= &calldata
->res
;
6215 task_setup_data
.callback_data
= calldata
;
6216 task
= rpc_run_task(&task_setup_data
);
6218 status
= PTR_ERR(task
);
6221 status
= nfs4_wait_for_completion_rpc_task(task
);
6223 status
= task
->tk_status
;
6227 dprintk("<-- %s status=%d\n", __func__
, status
);
6232 nfs4_layoutget_prepare(struct rpc_task
*task
, void *calldata
)
6234 struct nfs4_layoutget
*lgp
= calldata
;
6235 struct nfs_server
*server
= NFS_SERVER(lgp
->args
.inode
);
6236 struct nfs4_session
*session
= nfs4_get_session(server
);
6238 dprintk("--> %s\n", __func__
);
6239 /* Note the is a race here, where a CB_LAYOUTRECALL can come in
6240 * right now covering the LAYOUTGET we are about to send.
6241 * However, that is not so catastrophic, and there seems
6242 * to be no way to prevent it completely.
6244 if (nfs41_setup_sequence(session
, &lgp
->args
.seq_args
,
6245 &lgp
->res
.seq_res
, task
))
6247 if (pnfs_choose_layoutget_stateid(&lgp
->args
.stateid
,
6248 NFS_I(lgp
->args
.inode
)->layout
,
6249 lgp
->args
.ctx
->state
)) {
6250 rpc_exit(task
, NFS4_OK
);
6254 static void nfs4_layoutget_done(struct rpc_task
*task
, void *calldata
)
6256 struct nfs4_layoutget
*lgp
= calldata
;
6257 struct inode
*inode
= lgp
->args
.inode
;
6258 struct nfs_server
*server
= NFS_SERVER(inode
);
6259 struct pnfs_layout_hdr
*lo
;
6260 struct nfs4_state
*state
= NULL
;
6261 unsigned long timeo
, now
, giveup
;
6263 dprintk("--> %s tk_status => %d\n", __func__
, -task
->tk_status
);
6265 if (!nfs41_sequence_done(task
, &lgp
->res
.seq_res
))
6268 switch (task
->tk_status
) {
6272 * NFS4ERR_LAYOUTTRYLATER is a conflict with another client
6273 * (or clients) writing to the same RAID stripe
6275 case -NFS4ERR_LAYOUTTRYLATER
:
6277 * NFS4ERR_RECALLCONFLICT is when conflict with self (must recall
6278 * existing layout before getting a new one).
6280 case -NFS4ERR_RECALLCONFLICT
:
6281 timeo
= rpc_get_timeout(task
->tk_client
);
6282 giveup
= lgp
->args
.timestamp
+ timeo
;
6284 if (time_after(giveup
, now
)) {
6285 unsigned long delay
;
6288 * - Not less then NFS4_POLL_RETRY_MIN.
6289 * - One last time a jiffie before we give up
6290 * - exponential backoff (time_now minus start_attempt)
6292 delay
= max_t(unsigned long, NFS4_POLL_RETRY_MIN
,
6293 min((giveup
- now
- 1),
6294 now
- lgp
->args
.timestamp
));
6296 dprintk("%s: NFS4ERR_RECALLCONFLICT waiting %lu\n",
6298 rpc_delay(task
, delay
);
6299 task
->tk_status
= 0;
6300 rpc_restart_call_prepare(task
);
6301 goto out
; /* Do not call nfs4_async_handle_error() */
6304 case -NFS4ERR_EXPIRED
:
6305 case -NFS4ERR_BAD_STATEID
:
6306 spin_lock(&inode
->i_lock
);
6307 lo
= NFS_I(inode
)->layout
;
6308 if (!lo
|| list_empty(&lo
->plh_segs
)) {
6309 spin_unlock(&inode
->i_lock
);
6310 /* If the open stateid was bad, then recover it. */
6311 state
= lgp
->args
.ctx
->state
;
6315 pnfs_mark_matching_lsegs_invalid(lo
, &head
, NULL
);
6316 spin_unlock(&inode
->i_lock
);
6317 /* Mark the bad layout state as invalid, then
6318 * retry using the open stateid. */
6319 pnfs_free_lseg_list(&head
);
6322 if (nfs4_async_handle_error(task
, server
, state
) == -EAGAIN
)
6323 rpc_restart_call_prepare(task
);
6325 dprintk("<-- %s\n", __func__
);
6328 static size_t max_response_pages(struct nfs_server
*server
)
6330 u32 max_resp_sz
= server
->nfs_client
->cl_session
->fc_attrs
.max_resp_sz
;
6331 return nfs_page_array_len(0, max_resp_sz
);
6334 static void nfs4_free_pages(struct page
**pages
, size_t size
)
6341 for (i
= 0; i
< size
; i
++) {
6344 __free_page(pages
[i
]);
6349 static struct page
**nfs4_alloc_pages(size_t size
, gfp_t gfp_flags
)
6351 struct page
**pages
;
6354 pages
= kcalloc(size
, sizeof(struct page
*), gfp_flags
);
6356 dprintk("%s: can't alloc array of %zu pages\n", __func__
, size
);
6360 for (i
= 0; i
< size
; i
++) {
6361 pages
[i
] = alloc_page(gfp_flags
);
6363 dprintk("%s: failed to allocate page\n", __func__
);
6364 nfs4_free_pages(pages
, size
);
6372 static void nfs4_layoutget_release(void *calldata
)
6374 struct nfs4_layoutget
*lgp
= calldata
;
6375 struct inode
*inode
= lgp
->args
.inode
;
6376 struct nfs_server
*server
= NFS_SERVER(inode
);
6377 size_t max_pages
= max_response_pages(server
);
6379 dprintk("--> %s\n", __func__
);
6380 nfs4_free_pages(lgp
->args
.layout
.pages
, max_pages
);
6381 pnfs_put_layout_hdr(NFS_I(inode
)->layout
);
6382 put_nfs_open_context(lgp
->args
.ctx
);
6384 dprintk("<-- %s\n", __func__
);
6387 static const struct rpc_call_ops nfs4_layoutget_call_ops
= {
6388 .rpc_call_prepare
= nfs4_layoutget_prepare
,
6389 .rpc_call_done
= nfs4_layoutget_done
,
6390 .rpc_release
= nfs4_layoutget_release
,
6393 struct pnfs_layout_segment
*
6394 nfs4_proc_layoutget(struct nfs4_layoutget
*lgp
, gfp_t gfp_flags
)
6396 struct inode
*inode
= lgp
->args
.inode
;
6397 struct nfs_server
*server
= NFS_SERVER(inode
);
6398 size_t max_pages
= max_response_pages(server
);
6399 struct rpc_task
*task
;
6400 struct rpc_message msg
= {
6401 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LAYOUTGET
],
6402 .rpc_argp
= &lgp
->args
,
6403 .rpc_resp
= &lgp
->res
,
6405 struct rpc_task_setup task_setup_data
= {
6406 .rpc_client
= server
->client
,
6407 .rpc_message
= &msg
,
6408 .callback_ops
= &nfs4_layoutget_call_ops
,
6409 .callback_data
= lgp
,
6410 .flags
= RPC_TASK_ASYNC
,
6412 struct pnfs_layout_segment
*lseg
= NULL
;
6415 dprintk("--> %s\n", __func__
);
6417 /* nfs4_layoutget_release calls pnfs_put_layout_hdr */
6418 pnfs_get_layout_hdr(NFS_I(inode
)->layout
);
6420 lgp
->args
.layout
.pages
= nfs4_alloc_pages(max_pages
, gfp_flags
);
6421 if (!lgp
->args
.layout
.pages
) {
6422 nfs4_layoutget_release(lgp
);
6423 return ERR_PTR(-ENOMEM
);
6425 lgp
->args
.layout
.pglen
= max_pages
* PAGE_SIZE
;
6426 lgp
->args
.timestamp
= jiffies
;
6428 lgp
->res
.layoutp
= &lgp
->args
.layout
;
6429 lgp
->res
.seq_res
.sr_slot
= NULL
;
6430 nfs41_init_sequence(&lgp
->args
.seq_args
, &lgp
->res
.seq_res
, 0);
6432 task
= rpc_run_task(&task_setup_data
);
6434 return ERR_CAST(task
);
6435 status
= nfs4_wait_for_completion_rpc_task(task
);
6437 status
= task
->tk_status
;
6438 /* if layoutp->len is 0, nfs4_layoutget_prepare called rpc_exit */
6439 if (status
== 0 && lgp
->res
.layoutp
->len
)
6440 lseg
= pnfs_layout_process(lgp
);
6442 dprintk("<-- %s status=%d\n", __func__
, status
);
6444 return ERR_PTR(status
);
6449 nfs4_layoutreturn_prepare(struct rpc_task
*task
, void *calldata
)
6451 struct nfs4_layoutreturn
*lrp
= calldata
;
6453 dprintk("--> %s\n", __func__
);
6454 nfs41_setup_sequence(lrp
->clp
->cl_session
,
6455 &lrp
->args
.seq_args
,
6460 static void nfs4_layoutreturn_done(struct rpc_task
*task
, void *calldata
)
6462 struct nfs4_layoutreturn
*lrp
= calldata
;
6463 struct nfs_server
*server
;
6465 dprintk("--> %s\n", __func__
);
6467 if (!nfs41_sequence_done(task
, &lrp
->res
.seq_res
))
6470 server
= NFS_SERVER(lrp
->args
.inode
);
6471 if (nfs4_async_handle_error(task
, server
, NULL
) == -EAGAIN
) {
6472 rpc_restart_call_prepare(task
);
6475 dprintk("<-- %s\n", __func__
);
6478 static void nfs4_layoutreturn_release(void *calldata
)
6480 struct nfs4_layoutreturn
*lrp
= calldata
;
6481 struct pnfs_layout_hdr
*lo
= lrp
->args
.layout
;
6483 dprintk("--> %s\n", __func__
);
6484 spin_lock(&lo
->plh_inode
->i_lock
);
6485 if (lrp
->res
.lrs_present
)
6486 pnfs_set_layout_stateid(lo
, &lrp
->res
.stateid
, true);
6487 lo
->plh_block_lgets
--;
6488 spin_unlock(&lo
->plh_inode
->i_lock
);
6489 pnfs_put_layout_hdr(lrp
->args
.layout
);
6491 dprintk("<-- %s\n", __func__
);
6494 static const struct rpc_call_ops nfs4_layoutreturn_call_ops
= {
6495 .rpc_call_prepare
= nfs4_layoutreturn_prepare
,
6496 .rpc_call_done
= nfs4_layoutreturn_done
,
6497 .rpc_release
= nfs4_layoutreturn_release
,
6500 int nfs4_proc_layoutreturn(struct nfs4_layoutreturn
*lrp
)
6502 struct rpc_task
*task
;
6503 struct rpc_message msg
= {
6504 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LAYOUTRETURN
],
6505 .rpc_argp
= &lrp
->args
,
6506 .rpc_resp
= &lrp
->res
,
6508 struct rpc_task_setup task_setup_data
= {
6509 .rpc_client
= lrp
->clp
->cl_rpcclient
,
6510 .rpc_message
= &msg
,
6511 .callback_ops
= &nfs4_layoutreturn_call_ops
,
6512 .callback_data
= lrp
,
6516 dprintk("--> %s\n", __func__
);
6517 nfs41_init_sequence(&lrp
->args
.seq_args
, &lrp
->res
.seq_res
, 1);
6518 task
= rpc_run_task(&task_setup_data
);
6520 return PTR_ERR(task
);
6521 status
= task
->tk_status
;
6522 dprintk("<-- %s status=%d\n", __func__
, status
);
6528 * Retrieve the list of Data Server devices from the MDS.
6530 static int _nfs4_getdevicelist(struct nfs_server
*server
,
6531 const struct nfs_fh
*fh
,
6532 struct pnfs_devicelist
*devlist
)
6534 struct nfs4_getdevicelist_args args
= {
6536 .layoutclass
= server
->pnfs_curr_ld
->id
,
6538 struct nfs4_getdevicelist_res res
= {
6541 struct rpc_message msg
= {
6542 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GETDEVICELIST
],
6548 dprintk("--> %s\n", __func__
);
6549 status
= nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
,
6551 dprintk("<-- %s status=%d\n", __func__
, status
);
6555 int nfs4_proc_getdevicelist(struct nfs_server
*server
,
6556 const struct nfs_fh
*fh
,
6557 struct pnfs_devicelist
*devlist
)
6559 struct nfs4_exception exception
= { };
6563 err
= nfs4_handle_exception(server
,
6564 _nfs4_getdevicelist(server
, fh
, devlist
),
6566 } while (exception
.retry
);
6568 dprintk("%s: err=%d, num_devs=%u\n", __func__
,
6569 err
, devlist
->num_devs
);
6573 EXPORT_SYMBOL_GPL(nfs4_proc_getdevicelist
);
6576 _nfs4_proc_getdeviceinfo(struct nfs_server
*server
, struct pnfs_device
*pdev
)
6578 struct nfs4_getdeviceinfo_args args
= {
6581 struct nfs4_getdeviceinfo_res res
= {
6584 struct rpc_message msg
= {
6585 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GETDEVICEINFO
],
6591 dprintk("--> %s\n", __func__
);
6592 status
= nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
6593 dprintk("<-- %s status=%d\n", __func__
, status
);
6598 int nfs4_proc_getdeviceinfo(struct nfs_server
*server
, struct pnfs_device
*pdev
)
6600 struct nfs4_exception exception
= { };
6604 err
= nfs4_handle_exception(server
,
6605 _nfs4_proc_getdeviceinfo(server
, pdev
),
6607 } while (exception
.retry
);
6610 EXPORT_SYMBOL_GPL(nfs4_proc_getdeviceinfo
);
6612 static void nfs4_layoutcommit_prepare(struct rpc_task
*task
, void *calldata
)
6614 struct nfs4_layoutcommit_data
*data
= calldata
;
6615 struct nfs_server
*server
= NFS_SERVER(data
->args
.inode
);
6616 struct nfs4_session
*session
= nfs4_get_session(server
);
6618 nfs41_setup_sequence(session
,
6619 &data
->args
.seq_args
,
6625 nfs4_layoutcommit_done(struct rpc_task
*task
, void *calldata
)
6627 struct nfs4_layoutcommit_data
*data
= calldata
;
6628 struct nfs_server
*server
= NFS_SERVER(data
->args
.inode
);
6630 if (!nfs41_sequence_done(task
, &data
->res
.seq_res
))
6633 switch (task
->tk_status
) { /* Just ignore these failures */
6634 case -NFS4ERR_DELEG_REVOKED
: /* layout was recalled */
6635 case -NFS4ERR_BADIOMODE
: /* no IOMODE_RW layout for range */
6636 case -NFS4ERR_BADLAYOUT
: /* no layout */
6637 case -NFS4ERR_GRACE
: /* loca_recalim always false */
6638 task
->tk_status
= 0;
6641 nfs_post_op_update_inode_force_wcc(data
->args
.inode
,
6645 if (nfs4_async_handle_error(task
, server
, NULL
) == -EAGAIN
) {
6646 rpc_restart_call_prepare(task
);
6652 static void nfs4_layoutcommit_release(void *calldata
)
6654 struct nfs4_layoutcommit_data
*data
= calldata
;
6656 pnfs_cleanup_layoutcommit(data
);
6657 put_rpccred(data
->cred
);
6661 static const struct rpc_call_ops nfs4_layoutcommit_ops
= {
6662 .rpc_call_prepare
= nfs4_layoutcommit_prepare
,
6663 .rpc_call_done
= nfs4_layoutcommit_done
,
6664 .rpc_release
= nfs4_layoutcommit_release
,
6668 nfs4_proc_layoutcommit(struct nfs4_layoutcommit_data
*data
, bool sync
)
6670 struct rpc_message msg
= {
6671 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LAYOUTCOMMIT
],
6672 .rpc_argp
= &data
->args
,
6673 .rpc_resp
= &data
->res
,
6674 .rpc_cred
= data
->cred
,
6676 struct rpc_task_setup task_setup_data
= {
6677 .task
= &data
->task
,
6678 .rpc_client
= NFS_CLIENT(data
->args
.inode
),
6679 .rpc_message
= &msg
,
6680 .callback_ops
= &nfs4_layoutcommit_ops
,
6681 .callback_data
= data
,
6682 .flags
= RPC_TASK_ASYNC
,
6684 struct rpc_task
*task
;
6687 dprintk("NFS: %4d initiating layoutcommit call. sync %d "
6688 "lbw: %llu inode %lu\n",
6689 data
->task
.tk_pid
, sync
,
6690 data
->args
.lastbytewritten
,
6691 data
->args
.inode
->i_ino
);
6693 nfs41_init_sequence(&data
->args
.seq_args
, &data
->res
.seq_res
, 1);
6694 task
= rpc_run_task(&task_setup_data
);
6696 return PTR_ERR(task
);
6699 status
= nfs4_wait_for_completion_rpc_task(task
);
6702 status
= task
->tk_status
;
6704 dprintk("%s: status %d\n", __func__
, status
);
6710 _nfs41_proc_secinfo_no_name(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
6711 struct nfs_fsinfo
*info
, struct nfs4_secinfo_flavors
*flavors
)
6713 struct nfs41_secinfo_no_name_args args
= {
6714 .style
= SECINFO_STYLE_CURRENT_FH
,
6716 struct nfs4_secinfo_res res
= {
6719 struct rpc_message msg
= {
6720 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SECINFO_NO_NAME
],
6724 return nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
6728 nfs41_proc_secinfo_no_name(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
6729 struct nfs_fsinfo
*info
, struct nfs4_secinfo_flavors
*flavors
)
6731 struct nfs4_exception exception
= { };
6734 err
= _nfs41_proc_secinfo_no_name(server
, fhandle
, info
, flavors
);
6737 case -NFS4ERR_WRONGSEC
:
6741 err
= nfs4_handle_exception(server
, err
, &exception
);
6743 } while (exception
.retry
);
6749 nfs41_find_root_sec(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
6750 struct nfs_fsinfo
*info
)
6754 rpc_authflavor_t flavor
;
6755 struct nfs4_secinfo_flavors
*flavors
;
6757 page
= alloc_page(GFP_KERNEL
);
6763 flavors
= page_address(page
);
6764 err
= nfs41_proc_secinfo_no_name(server
, fhandle
, info
, flavors
);
6767 * Fall back on "guess and check" method if
6768 * the server doesn't support SECINFO_NO_NAME
6770 if (err
== -NFS4ERR_WRONGSEC
|| err
== -ENOTSUPP
) {
6771 err
= nfs4_find_root_sec(server
, fhandle
, info
);
6777 flavor
= nfs_find_best_sec(flavors
);
6779 err
= nfs4_lookup_root_sec(server
, fhandle
, info
, flavor
);
6789 static int _nfs41_test_stateid(struct nfs_server
*server
, nfs4_stateid
*stateid
)
6792 struct nfs41_test_stateid_args args
= {
6795 struct nfs41_test_stateid_res res
;
6796 struct rpc_message msg
= {
6797 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_TEST_STATEID
],
6802 dprintk("NFS call test_stateid %p\n", stateid
);
6803 nfs41_init_sequence(&args
.seq_args
, &res
.seq_res
, 0);
6804 nfs4_set_sequence_privileged(&args
.seq_args
);
6805 status
= nfs4_call_sync_sequence(server
->client
, server
, &msg
,
6806 &args
.seq_args
, &res
.seq_res
);
6807 if (status
!= NFS_OK
) {
6808 dprintk("NFS reply test_stateid: failed, %d\n", status
);
6811 dprintk("NFS reply test_stateid: succeeded, %d\n", -res
.status
);
6816 * nfs41_test_stateid - perform a TEST_STATEID operation
6818 * @server: server / transport on which to perform the operation
6819 * @stateid: state ID to test
6821 * Returns NFS_OK if the server recognizes that "stateid" is valid.
6822 * Otherwise a negative NFS4ERR value is returned if the operation
6823 * failed or the state ID is not currently valid.
6825 static int nfs41_test_stateid(struct nfs_server
*server
, nfs4_stateid
*stateid
)
6827 struct nfs4_exception exception
= { };
6830 err
= _nfs41_test_stateid(server
, stateid
);
6831 if (err
!= -NFS4ERR_DELAY
)
6833 nfs4_handle_exception(server
, err
, &exception
);
6834 } while (exception
.retry
);
6838 struct nfs_free_stateid_data
{
6839 struct nfs_server
*server
;
6840 struct nfs41_free_stateid_args args
;
6841 struct nfs41_free_stateid_res res
;
6844 static void nfs41_free_stateid_prepare(struct rpc_task
*task
, void *calldata
)
6846 struct nfs_free_stateid_data
*data
= calldata
;
6847 nfs41_setup_sequence(nfs4_get_session(data
->server
),
6848 &data
->args
.seq_args
,
6853 static void nfs41_free_stateid_done(struct rpc_task
*task
, void *calldata
)
6855 struct nfs_free_stateid_data
*data
= calldata
;
6857 nfs41_sequence_done(task
, &data
->res
.seq_res
);
6859 switch (task
->tk_status
) {
6860 case -NFS4ERR_DELAY
:
6861 if (nfs4_async_handle_error(task
, data
->server
, NULL
) == -EAGAIN
)
6862 rpc_restart_call_prepare(task
);
6866 static void nfs41_free_stateid_release(void *calldata
)
6871 const struct rpc_call_ops nfs41_free_stateid_ops
= {
6872 .rpc_call_prepare
= nfs41_free_stateid_prepare
,
6873 .rpc_call_done
= nfs41_free_stateid_done
,
6874 .rpc_release
= nfs41_free_stateid_release
,
6877 static struct rpc_task
*_nfs41_free_stateid(struct nfs_server
*server
,
6878 nfs4_stateid
*stateid
,
6881 struct rpc_message msg
= {
6882 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_FREE_STATEID
],
6884 struct rpc_task_setup task_setup
= {
6885 .rpc_client
= server
->client
,
6886 .rpc_message
= &msg
,
6887 .callback_ops
= &nfs41_free_stateid_ops
,
6888 .flags
= RPC_TASK_ASYNC
,
6890 struct nfs_free_stateid_data
*data
;
6892 dprintk("NFS call free_stateid %p\n", stateid
);
6893 data
= kmalloc(sizeof(*data
), GFP_NOFS
);
6895 return ERR_PTR(-ENOMEM
);
6896 data
->server
= server
;
6897 nfs4_stateid_copy(&data
->args
.stateid
, stateid
);
6899 task_setup
.callback_data
= data
;
6901 msg
.rpc_argp
= &data
->args
;
6902 msg
.rpc_resp
= &data
->res
;
6903 nfs41_init_sequence(&data
->args
.seq_args
, &data
->res
.seq_res
, 0);
6905 nfs4_set_sequence_privileged(&data
->args
.seq_args
);
6907 return rpc_run_task(&task_setup
);
6911 * nfs41_free_stateid - perform a FREE_STATEID operation
6913 * @server: server / transport on which to perform the operation
6914 * @stateid: state ID to release
6916 * Returns NFS_OK if the server freed "stateid". Otherwise a
6917 * negative NFS4ERR value is returned.
6919 static int nfs41_free_stateid(struct nfs_server
*server
, nfs4_stateid
*stateid
)
6921 struct rpc_task
*task
;
6924 task
= _nfs41_free_stateid(server
, stateid
, true);
6926 return PTR_ERR(task
);
6927 ret
= rpc_wait_for_completion_task(task
);
6929 ret
= task
->tk_status
;
6934 static int nfs41_free_lock_state(struct nfs_server
*server
, struct nfs4_lock_state
*lsp
)
6936 struct rpc_task
*task
;
6938 task
= _nfs41_free_stateid(server
, &lsp
->ls_stateid
, false);
6939 nfs4_free_lock_state(server
, lsp
);
6941 return PTR_ERR(task
);
6946 static bool nfs41_match_stateid(const nfs4_stateid
*s1
,
6947 const nfs4_stateid
*s2
)
6949 if (memcmp(s1
->other
, s2
->other
, sizeof(s1
->other
)) != 0)
6952 if (s1
->seqid
== s2
->seqid
)
6954 if (s1
->seqid
== 0 || s2
->seqid
== 0)
6960 #endif /* CONFIG_NFS_V4_1 */
6962 static bool nfs4_match_stateid(const nfs4_stateid
*s1
,
6963 const nfs4_stateid
*s2
)
6965 return nfs4_stateid_match(s1
, s2
);
6969 static const struct nfs4_state_recovery_ops nfs40_reboot_recovery_ops
= {
6970 .owner_flag_bit
= NFS_OWNER_RECLAIM_REBOOT
,
6971 .state_flag_bit
= NFS_STATE_RECLAIM_REBOOT
,
6972 .recover_open
= nfs4_open_reclaim
,
6973 .recover_lock
= nfs4_lock_reclaim
,
6974 .establish_clid
= nfs4_init_clientid
,
6975 .get_clid_cred
= nfs4_get_setclientid_cred
,
6976 .detect_trunking
= nfs40_discover_server_trunking
,
6979 #if defined(CONFIG_NFS_V4_1)
6980 static const struct nfs4_state_recovery_ops nfs41_reboot_recovery_ops
= {
6981 .owner_flag_bit
= NFS_OWNER_RECLAIM_REBOOT
,
6982 .state_flag_bit
= NFS_STATE_RECLAIM_REBOOT
,
6983 .recover_open
= nfs4_open_reclaim
,
6984 .recover_lock
= nfs4_lock_reclaim
,
6985 .establish_clid
= nfs41_init_clientid
,
6986 .get_clid_cred
= nfs4_get_exchange_id_cred
,
6987 .reclaim_complete
= nfs41_proc_reclaim_complete
,
6988 .detect_trunking
= nfs41_discover_server_trunking
,
6990 #endif /* CONFIG_NFS_V4_1 */
6992 static const struct nfs4_state_recovery_ops nfs40_nograce_recovery_ops
= {
6993 .owner_flag_bit
= NFS_OWNER_RECLAIM_NOGRACE
,
6994 .state_flag_bit
= NFS_STATE_RECLAIM_NOGRACE
,
6995 .recover_open
= nfs40_open_expired
,
6996 .recover_lock
= nfs4_lock_expired
,
6997 .establish_clid
= nfs4_init_clientid
,
6998 .get_clid_cred
= nfs4_get_setclientid_cred
,
7001 #if defined(CONFIG_NFS_V4_1)
7002 static const struct nfs4_state_recovery_ops nfs41_nograce_recovery_ops
= {
7003 .owner_flag_bit
= NFS_OWNER_RECLAIM_NOGRACE
,
7004 .state_flag_bit
= NFS_STATE_RECLAIM_NOGRACE
,
7005 .recover_open
= nfs41_open_expired
,
7006 .recover_lock
= nfs41_lock_expired
,
7007 .establish_clid
= nfs41_init_clientid
,
7008 .get_clid_cred
= nfs4_get_exchange_id_cred
,
7010 #endif /* CONFIG_NFS_V4_1 */
7012 static const struct nfs4_state_maintenance_ops nfs40_state_renewal_ops
= {
7013 .sched_state_renewal
= nfs4_proc_async_renew
,
7014 .get_state_renewal_cred_locked
= nfs4_get_renew_cred_locked
,
7015 .renew_lease
= nfs4_proc_renew
,
7018 #if defined(CONFIG_NFS_V4_1)
7019 static const struct nfs4_state_maintenance_ops nfs41_state_renewal_ops
= {
7020 .sched_state_renewal
= nfs41_proc_async_sequence
,
7021 .get_state_renewal_cred_locked
= nfs4_get_machine_cred_locked
,
7022 .renew_lease
= nfs4_proc_sequence
,
7026 static const struct nfs4_minor_version_ops nfs_v4_0_minor_ops
= {
7028 .init_caps
= NFS_CAP_READDIRPLUS
7029 | NFS_CAP_ATOMIC_OPEN
7030 | NFS_CAP_CHANGE_ATTR
7031 | NFS_CAP_POSIX_LOCK
,
7032 .call_sync
= _nfs4_call_sync
,
7033 .match_stateid
= nfs4_match_stateid
,
7034 .find_root_sec
= nfs4_find_root_sec
,
7035 .free_lock_state
= nfs4_release_lockowner
,
7036 .reboot_recovery_ops
= &nfs40_reboot_recovery_ops
,
7037 .nograce_recovery_ops
= &nfs40_nograce_recovery_ops
,
7038 .state_renewal_ops
= &nfs40_state_renewal_ops
,
7041 #if defined(CONFIG_NFS_V4_1)
7042 static const struct nfs4_minor_version_ops nfs_v4_1_minor_ops
= {
7044 .init_caps
= NFS_CAP_READDIRPLUS
7045 | NFS_CAP_ATOMIC_OPEN
7046 | NFS_CAP_CHANGE_ATTR
7047 | NFS_CAP_POSIX_LOCK
7048 | NFS_CAP_STATEID_NFSV41
7049 | NFS_CAP_ATOMIC_OPEN_V1
,
7050 .call_sync
= nfs4_call_sync_sequence
,
7051 .match_stateid
= nfs41_match_stateid
,
7052 .find_root_sec
= nfs41_find_root_sec
,
7053 .free_lock_state
= nfs41_free_lock_state
,
7054 .reboot_recovery_ops
= &nfs41_reboot_recovery_ops
,
7055 .nograce_recovery_ops
= &nfs41_nograce_recovery_ops
,
7056 .state_renewal_ops
= &nfs41_state_renewal_ops
,
7060 const struct nfs4_minor_version_ops
*nfs_v4_minor_ops
[] = {
7061 [0] = &nfs_v4_0_minor_ops
,
7062 #if defined(CONFIG_NFS_V4_1)
7063 [1] = &nfs_v4_1_minor_ops
,
7067 const struct inode_operations nfs4_dir_inode_operations
= {
7068 .create
= nfs_create
,
7069 .lookup
= nfs_lookup
,
7070 .atomic_open
= nfs_atomic_open
,
7072 .unlink
= nfs_unlink
,
7073 .symlink
= nfs_symlink
,
7077 .rename
= nfs_rename
,
7078 .permission
= nfs_permission
,
7079 .getattr
= nfs_getattr
,
7080 .setattr
= nfs_setattr
,
7081 .getxattr
= generic_getxattr
,
7082 .setxattr
= generic_setxattr
,
7083 .listxattr
= generic_listxattr
,
7084 .removexattr
= generic_removexattr
,
7087 static const struct inode_operations nfs4_file_inode_operations
= {
7088 .permission
= nfs_permission
,
7089 .getattr
= nfs_getattr
,
7090 .setattr
= nfs_setattr
,
7091 .getxattr
= generic_getxattr
,
7092 .setxattr
= generic_setxattr
,
7093 .listxattr
= generic_listxattr
,
7094 .removexattr
= generic_removexattr
,
7097 const struct nfs_rpc_ops nfs_v4_clientops
= {
7098 .version
= 4, /* protocol version */
7099 .dentry_ops
= &nfs4_dentry_operations
,
7100 .dir_inode_ops
= &nfs4_dir_inode_operations
,
7101 .file_inode_ops
= &nfs4_file_inode_operations
,
7102 .file_ops
= &nfs4_file_operations
,
7103 .getroot
= nfs4_proc_get_root
,
7104 .submount
= nfs4_submount
,
7105 .try_mount
= nfs4_try_mount
,
7106 .getattr
= nfs4_proc_getattr
,
7107 .setattr
= nfs4_proc_setattr
,
7108 .lookup
= nfs4_proc_lookup
,
7109 .access
= nfs4_proc_access
,
7110 .readlink
= nfs4_proc_readlink
,
7111 .create
= nfs4_proc_create
,
7112 .remove
= nfs4_proc_remove
,
7113 .unlink_setup
= nfs4_proc_unlink_setup
,
7114 .unlink_rpc_prepare
= nfs4_proc_unlink_rpc_prepare
,
7115 .unlink_done
= nfs4_proc_unlink_done
,
7116 .rename
= nfs4_proc_rename
,
7117 .rename_setup
= nfs4_proc_rename_setup
,
7118 .rename_rpc_prepare
= nfs4_proc_rename_rpc_prepare
,
7119 .rename_done
= nfs4_proc_rename_done
,
7120 .link
= nfs4_proc_link
,
7121 .symlink
= nfs4_proc_symlink
,
7122 .mkdir
= nfs4_proc_mkdir
,
7123 .rmdir
= nfs4_proc_remove
,
7124 .readdir
= nfs4_proc_readdir
,
7125 .mknod
= nfs4_proc_mknod
,
7126 .statfs
= nfs4_proc_statfs
,
7127 .fsinfo
= nfs4_proc_fsinfo
,
7128 .pathconf
= nfs4_proc_pathconf
,
7129 .set_capabilities
= nfs4_server_capabilities
,
7130 .decode_dirent
= nfs4_decode_dirent
,
7131 .read_setup
= nfs4_proc_read_setup
,
7132 .read_pageio_init
= pnfs_pageio_init_read
,
7133 .read_rpc_prepare
= nfs4_proc_read_rpc_prepare
,
7134 .read_done
= nfs4_read_done
,
7135 .write_setup
= nfs4_proc_write_setup
,
7136 .write_pageio_init
= pnfs_pageio_init_write
,
7137 .write_rpc_prepare
= nfs4_proc_write_rpc_prepare
,
7138 .write_done
= nfs4_write_done
,
7139 .commit_setup
= nfs4_proc_commit_setup
,
7140 .commit_rpc_prepare
= nfs4_proc_commit_rpc_prepare
,
7141 .commit_done
= nfs4_commit_done
,
7142 .lock
= nfs4_proc_lock
,
7143 .clear_acl_cache
= nfs4_zap_acl_attr
,
7144 .close_context
= nfs4_close_context
,
7145 .open_context
= nfs4_atomic_open
,
7146 .have_delegation
= nfs4_have_delegation
,
7147 .return_delegation
= nfs4_inode_return_delegation
,
7148 .alloc_client
= nfs4_alloc_client
,
7149 .init_client
= nfs4_init_client
,
7150 .free_client
= nfs4_free_client
,
7151 .create_server
= nfs4_create_server
,
7152 .clone_server
= nfs_clone_server
,
7155 static const struct xattr_handler nfs4_xattr_nfs4_acl_handler
= {
7156 .prefix
= XATTR_NAME_NFSV4_ACL
,
7157 .list
= nfs4_xattr_list_nfs4_acl
,
7158 .get
= nfs4_xattr_get_nfs4_acl
,
7159 .set
= nfs4_xattr_set_nfs4_acl
,
7162 const struct xattr_handler
*nfs4_xattr_handlers
[] = {
7163 &nfs4_xattr_nfs4_acl_handler
,