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 #if defined(CONFIG_NFS_V4_1)
1849 static void nfs41_clear_delegation_stateid(struct nfs4_state
*state
)
1851 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
1852 nfs4_stateid
*stateid
= &state
->stateid
;
1855 /* If a state reset has been done, test_stateid is unneeded */
1856 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) == 0)
1859 status
= nfs41_test_stateid(server
, stateid
);
1860 if (status
!= NFS_OK
) {
1861 /* Free the stateid unless the server explicitly
1862 * informs us the stateid is unrecognized. */
1863 if (status
!= -NFS4ERR_BAD_STATEID
)
1864 nfs41_free_stateid(server
, stateid
);
1865 nfs_remove_bad_delegation(state
->inode
);
1867 write_seqlock(&state
->seqlock
);
1868 nfs4_stateid_copy(&state
->stateid
, &state
->open_stateid
);
1869 write_sequnlock(&state
->seqlock
);
1870 clear_bit(NFS_DELEGATED_STATE
, &state
->flags
);
1875 * nfs41_check_open_stateid - possibly free an open stateid
1877 * @state: NFSv4 state for an inode
1879 * Returns NFS_OK if recovery for this stateid is now finished.
1880 * Otherwise a negative NFS4ERR value is returned.
1882 static int nfs41_check_open_stateid(struct nfs4_state
*state
)
1884 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
1885 nfs4_stateid
*stateid
= &state
->open_stateid
;
1888 /* If a state reset has been done, test_stateid is unneeded */
1889 if ((test_bit(NFS_O_RDONLY_STATE
, &state
->flags
) == 0) &&
1890 (test_bit(NFS_O_WRONLY_STATE
, &state
->flags
) == 0) &&
1891 (test_bit(NFS_O_RDWR_STATE
, &state
->flags
) == 0))
1892 return -NFS4ERR_BAD_STATEID
;
1894 status
= nfs41_test_stateid(server
, stateid
);
1895 if (status
!= NFS_OK
) {
1896 /* Free the stateid unless the server explicitly
1897 * informs us the stateid is unrecognized. */
1898 if (status
!= -NFS4ERR_BAD_STATEID
)
1899 nfs41_free_stateid(server
, stateid
);
1901 clear_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
1902 clear_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
1903 clear_bit(NFS_O_RDWR_STATE
, &state
->flags
);
1904 clear_bit(NFS_OPEN_STATE
, &state
->flags
);
1909 static int nfs41_open_expired(struct nfs4_state_owner
*sp
, struct nfs4_state
*state
)
1913 nfs41_clear_delegation_stateid(state
);
1914 status
= nfs41_check_open_stateid(state
);
1915 if (status
!= NFS_OK
)
1916 status
= nfs4_open_expired(sp
, state
);
1922 * on an EXCLUSIVE create, the server should send back a bitmask with FATTR4-*
1923 * fields corresponding to attributes that were used to store the verifier.
1924 * Make sure we clobber those fields in the later setattr call
1926 static inline void nfs4_exclusive_attrset(struct nfs4_opendata
*opendata
, struct iattr
*sattr
)
1928 if ((opendata
->o_res
.attrset
[1] & FATTR4_WORD1_TIME_ACCESS
) &&
1929 !(sattr
->ia_valid
& ATTR_ATIME_SET
))
1930 sattr
->ia_valid
|= ATTR_ATIME
;
1932 if ((opendata
->o_res
.attrset
[1] & FATTR4_WORD1_TIME_MODIFY
) &&
1933 !(sattr
->ia_valid
& ATTR_MTIME_SET
))
1934 sattr
->ia_valid
|= ATTR_MTIME
;
1937 static int _nfs4_open_and_get_state(struct nfs4_opendata
*opendata
,
1940 struct nfs4_state
**res
)
1942 struct nfs4_state_owner
*sp
= opendata
->owner
;
1943 struct nfs_server
*server
= sp
->so_server
;
1944 struct nfs4_state
*state
;
1948 seq
= raw_seqcount_begin(&sp
->so_reclaim_seqcount
);
1950 ret
= _nfs4_proc_open(opendata
);
1954 state
= nfs4_opendata_to_nfs4_state(opendata
);
1955 ret
= PTR_ERR(state
);
1958 if (server
->caps
& NFS_CAP_POSIX_LOCK
)
1959 set_bit(NFS_STATE_POSIX_LOCKS
, &state
->flags
);
1961 ret
= nfs4_opendata_access(sp
->so_cred
, opendata
, state
, fmode
, flags
);
1965 if (read_seqcount_retry(&sp
->so_reclaim_seqcount
, seq
))
1966 nfs4_schedule_stateid_recovery(server
, state
);
1973 * Returns a referenced nfs4_state
1975 static int _nfs4_do_open(struct inode
*dir
,
1976 struct dentry
*dentry
,
1979 struct iattr
*sattr
,
1980 struct rpc_cred
*cred
,
1981 struct nfs4_state
**res
,
1982 struct nfs4_threshold
**ctx_th
)
1984 struct nfs4_state_owner
*sp
;
1985 struct nfs4_state
*state
= NULL
;
1986 struct nfs_server
*server
= NFS_SERVER(dir
);
1987 struct nfs4_opendata
*opendata
;
1988 enum open_claim_type4 claim
= NFS4_OPEN_CLAIM_NULL
;
1991 /* Protect against reboot recovery conflicts */
1993 sp
= nfs4_get_state_owner(server
, cred
, GFP_KERNEL
);
1995 dprintk("nfs4_do_open: nfs4_get_state_owner failed!\n");
1998 status
= nfs4_recover_expired_lease(server
);
2000 goto err_put_state_owner
;
2001 if (dentry
->d_inode
!= NULL
)
2002 nfs4_return_incompatible_delegation(dentry
->d_inode
, fmode
);
2004 if (dentry
->d_inode
)
2005 claim
= NFS4_OPEN_CLAIM_FH
;
2006 opendata
= nfs4_opendata_alloc(dentry
, sp
, fmode
, flags
, sattr
,
2008 if (opendata
== NULL
)
2009 goto err_put_state_owner
;
2011 if (ctx_th
&& server
->attr_bitmask
[2] & FATTR4_WORD2_MDSTHRESHOLD
) {
2012 opendata
->f_attr
.mdsthreshold
= pnfs_mdsthreshold_alloc();
2013 if (!opendata
->f_attr
.mdsthreshold
)
2014 goto err_opendata_put
;
2015 opendata
->o_arg
.open_bitmap
= &nfs4_pnfs_open_bitmap
[0];
2017 if (dentry
->d_inode
!= NULL
)
2018 opendata
->state
= nfs4_get_open_state(dentry
->d_inode
, sp
);
2020 status
= _nfs4_open_and_get_state(opendata
, fmode
, flags
, &state
);
2022 goto err_opendata_put
;
2024 if ((opendata
->o_arg
.open_flags
& O_EXCL
) &&
2025 (opendata
->o_arg
.createmode
!= NFS4_CREATE_GUARDED
)) {
2026 nfs4_exclusive_attrset(opendata
, sattr
);
2028 nfs_fattr_init(opendata
->o_res
.f_attr
);
2029 status
= nfs4_do_setattr(state
->inode
, cred
,
2030 opendata
->o_res
.f_attr
, sattr
,
2033 nfs_setattr_update_inode(state
->inode
, sattr
);
2034 nfs_post_op_update_inode(state
->inode
, opendata
->o_res
.f_attr
);
2037 if (pnfs_use_threshold(ctx_th
, opendata
->f_attr
.mdsthreshold
, server
))
2038 *ctx_th
= opendata
->f_attr
.mdsthreshold
;
2040 kfree(opendata
->f_attr
.mdsthreshold
);
2041 opendata
->f_attr
.mdsthreshold
= NULL
;
2043 nfs4_opendata_put(opendata
);
2044 nfs4_put_state_owner(sp
);
2048 kfree(opendata
->f_attr
.mdsthreshold
);
2049 nfs4_opendata_put(opendata
);
2050 err_put_state_owner
:
2051 nfs4_put_state_owner(sp
);
2058 static struct nfs4_state
*nfs4_do_open(struct inode
*dir
,
2059 struct dentry
*dentry
,
2062 struct iattr
*sattr
,
2063 struct rpc_cred
*cred
,
2064 struct nfs4_threshold
**ctx_th
)
2066 struct nfs_server
*server
= NFS_SERVER(dir
);
2067 struct nfs4_exception exception
= { };
2068 struct nfs4_state
*res
;
2071 fmode
&= FMODE_READ
|FMODE_WRITE
|FMODE_EXEC
;
2073 status
= _nfs4_do_open(dir
, dentry
, fmode
, flags
, sattr
, cred
,
2077 /* NOTE: BAD_SEQID means the server and client disagree about the
2078 * book-keeping w.r.t. state-changing operations
2079 * (OPEN/CLOSE/LOCK/LOCKU...)
2080 * It is actually a sign of a bug on the client or on the server.
2082 * If we receive a BAD_SEQID error in the particular case of
2083 * doing an OPEN, we assume that nfs_increment_open_seqid() will
2084 * have unhashed the old state_owner for us, and that we can
2085 * therefore safely retry using a new one. We should still warn
2086 * the user though...
2088 if (status
== -NFS4ERR_BAD_SEQID
) {
2089 pr_warn_ratelimited("NFS: v4 server %s "
2090 " returned a bad sequence-id error!\n",
2091 NFS_SERVER(dir
)->nfs_client
->cl_hostname
);
2092 exception
.retry
= 1;
2096 * BAD_STATEID on OPEN means that the server cancelled our
2097 * state before it received the OPEN_CONFIRM.
2098 * Recover by retrying the request as per the discussion
2099 * on Page 181 of RFC3530.
2101 if (status
== -NFS4ERR_BAD_STATEID
) {
2102 exception
.retry
= 1;
2105 if (status
== -EAGAIN
) {
2106 /* We must have found a delegation */
2107 exception
.retry
= 1;
2110 if (nfs4_clear_cap_atomic_open_v1(server
, status
, &exception
))
2112 res
= ERR_PTR(nfs4_handle_exception(server
,
2113 status
, &exception
));
2114 } while (exception
.retry
);
2118 static int _nfs4_do_setattr(struct inode
*inode
, struct rpc_cred
*cred
,
2119 struct nfs_fattr
*fattr
, struct iattr
*sattr
,
2120 struct nfs4_state
*state
)
2122 struct nfs_server
*server
= NFS_SERVER(inode
);
2123 struct nfs_setattrargs arg
= {
2124 .fh
= NFS_FH(inode
),
2127 .bitmask
= server
->attr_bitmask
,
2129 struct nfs_setattrres res
= {
2133 struct rpc_message msg
= {
2134 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETATTR
],
2139 unsigned long timestamp
= jiffies
;
2144 nfs_fattr_init(fattr
);
2146 /* Servers should only apply open mode checks for file size changes */
2147 truncate
= (sattr
->ia_valid
& ATTR_SIZE
) ? true : false;
2148 fmode
= truncate
? FMODE_WRITE
: FMODE_READ
;
2150 if (nfs4_copy_delegation_stateid(&arg
.stateid
, inode
, fmode
)) {
2151 /* Use that stateid */
2152 } else if (truncate
&& state
!= NULL
&& nfs4_valid_open_stateid(state
)) {
2153 struct nfs_lockowner lockowner
= {
2154 .l_owner
= current
->files
,
2155 .l_pid
= current
->tgid
,
2157 nfs4_select_rw_stateid(&arg
.stateid
, state
, FMODE_WRITE
,
2160 nfs4_stateid_copy(&arg
.stateid
, &zero_stateid
);
2162 status
= nfs4_call_sync(server
->client
, server
, &msg
, &arg
.seq_args
, &res
.seq_res
, 1);
2163 if (status
== 0 && state
!= NULL
)
2164 renew_lease(server
, timestamp
);
2168 static int nfs4_do_setattr(struct inode
*inode
, struct rpc_cred
*cred
,
2169 struct nfs_fattr
*fattr
, struct iattr
*sattr
,
2170 struct nfs4_state
*state
)
2172 struct nfs_server
*server
= NFS_SERVER(inode
);
2173 struct nfs4_exception exception
= {
2179 err
= _nfs4_do_setattr(inode
, cred
, fattr
, sattr
, state
);
2181 case -NFS4ERR_OPENMODE
:
2182 if (!(sattr
->ia_valid
& ATTR_SIZE
)) {
2183 pr_warn_once("NFSv4: server %s is incorrectly "
2184 "applying open mode checks to "
2185 "a SETATTR that is not "
2186 "changing file size.\n",
2187 server
->nfs_client
->cl_hostname
);
2189 if (state
&& !(state
->state
& FMODE_WRITE
)) {
2191 if (sattr
->ia_valid
& ATTR_OPEN
)
2196 err
= nfs4_handle_exception(server
, err
, &exception
);
2197 } while (exception
.retry
);
2202 struct nfs4_closedata
{
2203 struct inode
*inode
;
2204 struct nfs4_state
*state
;
2205 struct nfs_closeargs arg
;
2206 struct nfs_closeres res
;
2207 struct nfs_fattr fattr
;
2208 unsigned long timestamp
;
2213 static void nfs4_free_closedata(void *data
)
2215 struct nfs4_closedata
*calldata
= data
;
2216 struct nfs4_state_owner
*sp
= calldata
->state
->owner
;
2217 struct super_block
*sb
= calldata
->state
->inode
->i_sb
;
2220 pnfs_roc_release(calldata
->state
->inode
);
2221 nfs4_put_open_state(calldata
->state
);
2222 nfs_free_seqid(calldata
->arg
.seqid
);
2223 nfs4_put_state_owner(sp
);
2224 nfs_sb_deactive(sb
);
2228 static void nfs4_close_clear_stateid_flags(struct nfs4_state
*state
,
2231 spin_lock(&state
->owner
->so_lock
);
2232 clear_bit(NFS_O_RDWR_STATE
, &state
->flags
);
2233 switch (fmode
& (FMODE_READ
|FMODE_WRITE
)) {
2235 clear_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
2238 clear_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
2241 clear_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
2242 clear_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
2243 clear_bit(NFS_OPEN_STATE
, &state
->flags
);
2245 spin_unlock(&state
->owner
->so_lock
);
2248 static void nfs4_close_done(struct rpc_task
*task
, void *data
)
2250 struct nfs4_closedata
*calldata
= data
;
2251 struct nfs4_state
*state
= calldata
->state
;
2252 struct nfs_server
*server
= NFS_SERVER(calldata
->inode
);
2254 dprintk("%s: begin!\n", __func__
);
2255 if (!nfs4_sequence_done(task
, &calldata
->res
.seq_res
))
2257 /* hmm. we are done with the inode, and in the process of freeing
2258 * the state_owner. we keep this around to process errors
2260 switch (task
->tk_status
) {
2263 pnfs_roc_set_barrier(state
->inode
,
2264 calldata
->roc_barrier
);
2265 nfs_set_open_stateid(state
, &calldata
->res
.stateid
, 0);
2266 renew_lease(server
, calldata
->timestamp
);
2267 nfs4_close_clear_stateid_flags(state
,
2268 calldata
->arg
.fmode
);
2270 case -NFS4ERR_STALE_STATEID
:
2271 case -NFS4ERR_OLD_STATEID
:
2272 case -NFS4ERR_BAD_STATEID
:
2273 case -NFS4ERR_EXPIRED
:
2274 if (calldata
->arg
.fmode
== 0)
2277 if (nfs4_async_handle_error(task
, server
, state
) == -EAGAIN
)
2278 rpc_restart_call_prepare(task
);
2280 nfs_release_seqid(calldata
->arg
.seqid
);
2281 nfs_refresh_inode(calldata
->inode
, calldata
->res
.fattr
);
2282 dprintk("%s: done, ret = %d!\n", __func__
, task
->tk_status
);
2285 static void nfs4_close_prepare(struct rpc_task
*task
, void *data
)
2287 struct nfs4_closedata
*calldata
= data
;
2288 struct nfs4_state
*state
= calldata
->state
;
2289 struct inode
*inode
= calldata
->inode
;
2290 bool is_rdonly
, is_wronly
, is_rdwr
;
2293 dprintk("%s: begin!\n", __func__
);
2294 if (nfs_wait_on_sequence(calldata
->arg
.seqid
, task
) != 0)
2297 task
->tk_msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_OPEN_DOWNGRADE
];
2298 spin_lock(&state
->owner
->so_lock
);
2299 is_rdwr
= test_bit(NFS_O_RDWR_STATE
, &state
->flags
);
2300 is_rdonly
= test_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
2301 is_wronly
= test_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
2302 /* Calculate the change in open mode */
2303 calldata
->arg
.fmode
= 0;
2304 if (state
->n_rdwr
== 0) {
2305 if (state
->n_rdonly
== 0)
2306 call_close
|= is_rdonly
;
2308 calldata
->arg
.fmode
|= FMODE_READ
;
2309 if (state
->n_wronly
== 0)
2310 call_close
|= is_wronly
;
2312 calldata
->arg
.fmode
|= FMODE_WRITE
;
2314 calldata
->arg
.fmode
|= FMODE_READ
|FMODE_WRITE
;
2316 if (calldata
->arg
.fmode
== 0)
2317 call_close
|= is_rdwr
;
2319 if (!nfs4_valid_open_stateid(state
))
2321 spin_unlock(&state
->owner
->so_lock
);
2324 /* Note: exit _without_ calling nfs4_close_done */
2328 if (calldata
->arg
.fmode
== 0) {
2329 task
->tk_msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_CLOSE
];
2330 if (calldata
->roc
&&
2331 pnfs_roc_drain(inode
, &calldata
->roc_barrier
, task
)) {
2332 nfs_release_seqid(calldata
->arg
.seqid
);
2337 nfs_fattr_init(calldata
->res
.fattr
);
2338 calldata
->timestamp
= jiffies
;
2339 if (nfs4_setup_sequence(NFS_SERVER(inode
),
2340 &calldata
->arg
.seq_args
,
2341 &calldata
->res
.seq_res
,
2343 nfs_release_seqid(calldata
->arg
.seqid
);
2344 dprintk("%s: done!\n", __func__
);
2347 task
->tk_action
= NULL
;
2349 nfs4_sequence_done(task
, &calldata
->res
.seq_res
);
2352 static const struct rpc_call_ops nfs4_close_ops
= {
2353 .rpc_call_prepare
= nfs4_close_prepare
,
2354 .rpc_call_done
= nfs4_close_done
,
2355 .rpc_release
= nfs4_free_closedata
,
2359 * It is possible for data to be read/written from a mem-mapped file
2360 * after the sys_close call (which hits the vfs layer as a flush).
2361 * This means that we can't safely call nfsv4 close on a file until
2362 * the inode is cleared. This in turn means that we are not good
2363 * NFSv4 citizens - we do not indicate to the server to update the file's
2364 * share state even when we are done with one of the three share
2365 * stateid's in the inode.
2367 * NOTE: Caller must be holding the sp->so_owner semaphore!
2369 int nfs4_do_close(struct nfs4_state
*state
, gfp_t gfp_mask
, int wait
)
2371 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
2372 struct nfs4_closedata
*calldata
;
2373 struct nfs4_state_owner
*sp
= state
->owner
;
2374 struct rpc_task
*task
;
2375 struct rpc_message msg
= {
2376 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_CLOSE
],
2377 .rpc_cred
= state
->owner
->so_cred
,
2379 struct rpc_task_setup task_setup_data
= {
2380 .rpc_client
= server
->client
,
2381 .rpc_message
= &msg
,
2382 .callback_ops
= &nfs4_close_ops
,
2383 .workqueue
= nfsiod_workqueue
,
2384 .flags
= RPC_TASK_ASYNC
,
2386 int status
= -ENOMEM
;
2388 calldata
= kzalloc(sizeof(*calldata
), gfp_mask
);
2389 if (calldata
== NULL
)
2391 nfs41_init_sequence(&calldata
->arg
.seq_args
, &calldata
->res
.seq_res
, 1);
2392 calldata
->inode
= state
->inode
;
2393 calldata
->state
= state
;
2394 calldata
->arg
.fh
= NFS_FH(state
->inode
);
2395 calldata
->arg
.stateid
= &state
->open_stateid
;
2396 /* Serialization for the sequence id */
2397 calldata
->arg
.seqid
= nfs_alloc_seqid(&state
->owner
->so_seqid
, gfp_mask
);
2398 if (calldata
->arg
.seqid
== NULL
)
2399 goto out_free_calldata
;
2400 calldata
->arg
.fmode
= 0;
2401 calldata
->arg
.bitmask
= server
->cache_consistency_bitmask
;
2402 calldata
->res
.fattr
= &calldata
->fattr
;
2403 calldata
->res
.seqid
= calldata
->arg
.seqid
;
2404 calldata
->res
.server
= server
;
2405 calldata
->roc
= pnfs_roc(state
->inode
);
2406 nfs_sb_active(calldata
->inode
->i_sb
);
2408 msg
.rpc_argp
= &calldata
->arg
;
2409 msg
.rpc_resp
= &calldata
->res
;
2410 task_setup_data
.callback_data
= calldata
;
2411 task
= rpc_run_task(&task_setup_data
);
2413 return PTR_ERR(task
);
2416 status
= rpc_wait_for_completion_task(task
);
2422 nfs4_put_open_state(state
);
2423 nfs4_put_state_owner(sp
);
2427 static struct inode
*
2428 nfs4_atomic_open(struct inode
*dir
, struct nfs_open_context
*ctx
, int open_flags
, struct iattr
*attr
)
2430 struct nfs4_state
*state
;
2432 /* Protect against concurrent sillydeletes */
2433 state
= nfs4_do_open(dir
, ctx
->dentry
, ctx
->mode
, open_flags
, attr
,
2434 ctx
->cred
, &ctx
->mdsthreshold
);
2436 return ERR_CAST(state
);
2438 return igrab(state
->inode
);
2441 static void nfs4_close_context(struct nfs_open_context
*ctx
, int is_sync
)
2443 if (ctx
->state
== NULL
)
2446 nfs4_close_sync(ctx
->state
, ctx
->mode
);
2448 nfs4_close_state(ctx
->state
, ctx
->mode
);
2451 static int _nfs4_server_capabilities(struct nfs_server
*server
, struct nfs_fh
*fhandle
)
2453 struct nfs4_server_caps_arg args
= {
2456 struct nfs4_server_caps_res res
= {};
2457 struct rpc_message msg
= {
2458 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SERVER_CAPS
],
2464 status
= nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
2466 memcpy(server
->attr_bitmask
, res
.attr_bitmask
, sizeof(server
->attr_bitmask
));
2467 server
->caps
&= ~(NFS_CAP_ACLS
|NFS_CAP_HARDLINKS
|
2468 NFS_CAP_SYMLINKS
|NFS_CAP_FILEID
|
2469 NFS_CAP_MODE
|NFS_CAP_NLINK
|NFS_CAP_OWNER
|
2470 NFS_CAP_OWNER_GROUP
|NFS_CAP_ATIME
|
2471 NFS_CAP_CTIME
|NFS_CAP_MTIME
);
2472 if (res
.attr_bitmask
[0] & FATTR4_WORD0_ACL
)
2473 server
->caps
|= NFS_CAP_ACLS
;
2474 if (res
.has_links
!= 0)
2475 server
->caps
|= NFS_CAP_HARDLINKS
;
2476 if (res
.has_symlinks
!= 0)
2477 server
->caps
|= NFS_CAP_SYMLINKS
;
2478 if (res
.attr_bitmask
[0] & FATTR4_WORD0_FILEID
)
2479 server
->caps
|= NFS_CAP_FILEID
;
2480 if (res
.attr_bitmask
[1] & FATTR4_WORD1_MODE
)
2481 server
->caps
|= NFS_CAP_MODE
;
2482 if (res
.attr_bitmask
[1] & FATTR4_WORD1_NUMLINKS
)
2483 server
->caps
|= NFS_CAP_NLINK
;
2484 if (res
.attr_bitmask
[1] & FATTR4_WORD1_OWNER
)
2485 server
->caps
|= NFS_CAP_OWNER
;
2486 if (res
.attr_bitmask
[1] & FATTR4_WORD1_OWNER_GROUP
)
2487 server
->caps
|= NFS_CAP_OWNER_GROUP
;
2488 if (res
.attr_bitmask
[1] & FATTR4_WORD1_TIME_ACCESS
)
2489 server
->caps
|= NFS_CAP_ATIME
;
2490 if (res
.attr_bitmask
[1] & FATTR4_WORD1_TIME_METADATA
)
2491 server
->caps
|= NFS_CAP_CTIME
;
2492 if (res
.attr_bitmask
[1] & FATTR4_WORD1_TIME_MODIFY
)
2493 server
->caps
|= NFS_CAP_MTIME
;
2495 memcpy(server
->cache_consistency_bitmask
, res
.attr_bitmask
, sizeof(server
->cache_consistency_bitmask
));
2496 server
->cache_consistency_bitmask
[0] &= FATTR4_WORD0_CHANGE
|FATTR4_WORD0_SIZE
;
2497 server
->cache_consistency_bitmask
[1] &= FATTR4_WORD1_TIME_METADATA
|FATTR4_WORD1_TIME_MODIFY
;
2498 server
->acl_bitmask
= res
.acl_bitmask
;
2499 server
->fh_expire_type
= res
.fh_expire_type
;
2505 int nfs4_server_capabilities(struct nfs_server
*server
, struct nfs_fh
*fhandle
)
2507 struct nfs4_exception exception
= { };
2510 err
= nfs4_handle_exception(server
,
2511 _nfs4_server_capabilities(server
, fhandle
),
2513 } while (exception
.retry
);
2517 static int _nfs4_lookup_root(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
2518 struct nfs_fsinfo
*info
)
2520 struct nfs4_lookup_root_arg args
= {
2521 .bitmask
= nfs4_fattr_bitmap
,
2523 struct nfs4_lookup_res res
= {
2525 .fattr
= info
->fattr
,
2528 struct rpc_message msg
= {
2529 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOOKUP_ROOT
],
2534 nfs_fattr_init(info
->fattr
);
2535 return nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
2538 static int nfs4_lookup_root(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
2539 struct nfs_fsinfo
*info
)
2541 struct nfs4_exception exception
= { };
2544 err
= _nfs4_lookup_root(server
, fhandle
, info
);
2547 case -NFS4ERR_WRONGSEC
:
2550 err
= nfs4_handle_exception(server
, err
, &exception
);
2552 } while (exception
.retry
);
2557 static int nfs4_lookup_root_sec(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
2558 struct nfs_fsinfo
*info
, rpc_authflavor_t flavor
)
2560 struct rpc_auth
*auth
;
2563 auth
= rpcauth_create(flavor
, server
->client
);
2568 ret
= nfs4_lookup_root(server
, fhandle
, info
);
2574 * Retry pseudoroot lookup with various security flavors. We do this when:
2576 * NFSv4.0: the PUTROOTFH operation returns NFS4ERR_WRONGSEC
2577 * NFSv4.1: the server does not support the SECINFO_NO_NAME operation
2579 * Returns zero on success, or a negative NFS4ERR value, or a
2580 * negative errno value.
2582 static int nfs4_find_root_sec(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
2583 struct nfs_fsinfo
*info
)
2585 /* Per 3530bis 15.33.5 */
2586 static const rpc_authflavor_t flav_array
[] = {
2590 RPC_AUTH_UNIX
, /* courtesy */
2593 int status
= -EPERM
;
2596 for (i
= 0; i
< ARRAY_SIZE(flav_array
); i
++) {
2597 status
= nfs4_lookup_root_sec(server
, fhandle
, info
, flav_array
[i
]);
2598 if (status
== -NFS4ERR_WRONGSEC
|| status
== -EACCES
)
2604 * -EACCESS could mean that the user doesn't have correct permissions
2605 * to access the mount. It could also mean that we tried to mount
2606 * with a gss auth flavor, but rpc.gssd isn't running. Either way,
2607 * existing mount programs don't handle -EACCES very well so it should
2608 * be mapped to -EPERM instead.
2610 if (status
== -EACCES
)
2615 static int nfs4_do_find_root_sec(struct nfs_server
*server
,
2616 struct nfs_fh
*fhandle
, struct nfs_fsinfo
*info
)
2618 int mv
= server
->nfs_client
->cl_minorversion
;
2619 return nfs_v4_minor_ops
[mv
]->find_root_sec(server
, fhandle
, info
);
2623 * nfs4_proc_get_rootfh - get file handle for server's pseudoroot
2624 * @server: initialized nfs_server handle
2625 * @fhandle: we fill in the pseudo-fs root file handle
2626 * @info: we fill in an FSINFO struct
2628 * Returns zero on success, or a negative errno.
2630 int nfs4_proc_get_rootfh(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
2631 struct nfs_fsinfo
*info
)
2635 status
= nfs4_lookup_root(server
, fhandle
, info
);
2636 if ((status
== -NFS4ERR_WRONGSEC
) &&
2637 !(server
->flags
& NFS_MOUNT_SECFLAVOUR
))
2638 status
= nfs4_do_find_root_sec(server
, fhandle
, info
);
2641 status
= nfs4_server_capabilities(server
, fhandle
);
2643 status
= nfs4_do_fsinfo(server
, fhandle
, info
);
2645 return nfs4_map_errors(status
);
2648 static int nfs4_proc_get_root(struct nfs_server
*server
, struct nfs_fh
*mntfh
,
2649 struct nfs_fsinfo
*info
)
2652 struct nfs_fattr
*fattr
= info
->fattr
;
2654 error
= nfs4_server_capabilities(server
, mntfh
);
2656 dprintk("nfs4_get_root: getcaps error = %d\n", -error
);
2660 error
= nfs4_proc_getattr(server
, mntfh
, fattr
);
2662 dprintk("nfs4_get_root: getattr error = %d\n", -error
);
2666 if (fattr
->valid
& NFS_ATTR_FATTR_FSID
&&
2667 !nfs_fsid_equal(&server
->fsid
, &fattr
->fsid
))
2668 memcpy(&server
->fsid
, &fattr
->fsid
, sizeof(server
->fsid
));
2674 * Get locations and (maybe) other attributes of a referral.
2675 * Note that we'll actually follow the referral later when
2676 * we detect fsid mismatch in inode revalidation
2678 static int nfs4_get_referral(struct rpc_clnt
*client
, struct inode
*dir
,
2679 const struct qstr
*name
, struct nfs_fattr
*fattr
,
2680 struct nfs_fh
*fhandle
)
2682 int status
= -ENOMEM
;
2683 struct page
*page
= NULL
;
2684 struct nfs4_fs_locations
*locations
= NULL
;
2686 page
= alloc_page(GFP_KERNEL
);
2689 locations
= kmalloc(sizeof(struct nfs4_fs_locations
), GFP_KERNEL
);
2690 if (locations
== NULL
)
2693 status
= nfs4_proc_fs_locations(client
, dir
, name
, locations
, page
);
2696 /* Make sure server returned a different fsid for the referral */
2697 if (nfs_fsid_equal(&NFS_SERVER(dir
)->fsid
, &locations
->fattr
.fsid
)) {
2698 dprintk("%s: server did not return a different fsid for"
2699 " a referral at %s\n", __func__
, name
->name
);
2703 /* Fixup attributes for the nfs_lookup() call to nfs_fhget() */
2704 nfs_fixup_referral_attributes(&locations
->fattr
);
2706 /* replace the lookup nfs_fattr with the locations nfs_fattr */
2707 memcpy(fattr
, &locations
->fattr
, sizeof(struct nfs_fattr
));
2708 memset(fhandle
, 0, sizeof(struct nfs_fh
));
2716 static int _nfs4_proc_getattr(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fattr
*fattr
)
2718 struct nfs4_getattr_arg args
= {
2720 .bitmask
= server
->attr_bitmask
,
2722 struct nfs4_getattr_res res
= {
2726 struct rpc_message msg
= {
2727 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GETATTR
],
2732 nfs_fattr_init(fattr
);
2733 return nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
2736 static int nfs4_proc_getattr(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fattr
*fattr
)
2738 struct nfs4_exception exception
= { };
2741 err
= nfs4_handle_exception(server
,
2742 _nfs4_proc_getattr(server
, fhandle
, fattr
),
2744 } while (exception
.retry
);
2749 * The file is not closed if it is opened due to the a request to change
2750 * the size of the file. The open call will not be needed once the
2751 * VFS layer lookup-intents are implemented.
2753 * Close is called when the inode is destroyed.
2754 * If we haven't opened the file for O_WRONLY, we
2755 * need to in the size_change case to obtain a stateid.
2758 * Because OPEN is always done by name in nfsv4, it is
2759 * possible that we opened a different file by the same
2760 * name. We can recognize this race condition, but we
2761 * can't do anything about it besides returning an error.
2763 * This will be fixed with VFS changes (lookup-intent).
2766 nfs4_proc_setattr(struct dentry
*dentry
, struct nfs_fattr
*fattr
,
2767 struct iattr
*sattr
)
2769 struct inode
*inode
= dentry
->d_inode
;
2770 struct rpc_cred
*cred
= NULL
;
2771 struct nfs4_state
*state
= NULL
;
2774 if (pnfs_ld_layoutret_on_setattr(inode
))
2775 pnfs_commit_and_return_layout(inode
);
2777 nfs_fattr_init(fattr
);
2779 /* Deal with open(O_TRUNC) */
2780 if (sattr
->ia_valid
& ATTR_OPEN
)
2781 sattr
->ia_valid
&= ~(ATTR_MTIME
|ATTR_CTIME
|ATTR_OPEN
);
2783 /* Optimization: if the end result is no change, don't RPC */
2784 if ((sattr
->ia_valid
& ~(ATTR_FILE
)) == 0)
2787 /* Search for an existing open(O_WRITE) file */
2788 if (sattr
->ia_valid
& ATTR_FILE
) {
2789 struct nfs_open_context
*ctx
;
2791 ctx
= nfs_file_open_context(sattr
->ia_file
);
2798 status
= nfs4_do_setattr(inode
, cred
, fattr
, sattr
, state
);
2800 nfs_setattr_update_inode(inode
, sattr
);
2804 static int _nfs4_proc_lookup(struct rpc_clnt
*clnt
, struct inode
*dir
,
2805 const struct qstr
*name
, struct nfs_fh
*fhandle
,
2806 struct nfs_fattr
*fattr
)
2808 struct nfs_server
*server
= NFS_SERVER(dir
);
2810 struct nfs4_lookup_arg args
= {
2811 .bitmask
= server
->attr_bitmask
,
2812 .dir_fh
= NFS_FH(dir
),
2815 struct nfs4_lookup_res res
= {
2820 struct rpc_message msg
= {
2821 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOOKUP
],
2826 nfs_fattr_init(fattr
);
2828 dprintk("NFS call lookup %s\n", name
->name
);
2829 status
= nfs4_call_sync(clnt
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
2830 dprintk("NFS reply lookup: %d\n", status
);
2834 static void nfs_fixup_secinfo_attributes(struct nfs_fattr
*fattr
)
2836 fattr
->valid
|= NFS_ATTR_FATTR_TYPE
| NFS_ATTR_FATTR_MODE
|
2837 NFS_ATTR_FATTR_NLINK
| NFS_ATTR_FATTR_MOUNTPOINT
;
2838 fattr
->mode
= S_IFDIR
| S_IRUGO
| S_IXUGO
;
2842 static int nfs4_proc_lookup_common(struct rpc_clnt
**clnt
, struct inode
*dir
,
2843 struct qstr
*name
, struct nfs_fh
*fhandle
,
2844 struct nfs_fattr
*fattr
)
2846 struct nfs4_exception exception
= { };
2847 struct rpc_clnt
*client
= *clnt
;
2850 err
= _nfs4_proc_lookup(client
, dir
, name
, fhandle
, fattr
);
2852 case -NFS4ERR_BADNAME
:
2855 case -NFS4ERR_MOVED
:
2856 err
= nfs4_get_referral(client
, dir
, name
, fattr
, fhandle
);
2858 case -NFS4ERR_WRONGSEC
:
2860 if (client
!= *clnt
)
2863 client
= nfs4_create_sec_client(client
, dir
, name
);
2865 return PTR_ERR(client
);
2867 exception
.retry
= 1;
2870 err
= nfs4_handle_exception(NFS_SERVER(dir
), err
, &exception
);
2872 } while (exception
.retry
);
2877 else if (client
!= *clnt
)
2878 rpc_shutdown_client(client
);
2883 static int nfs4_proc_lookup(struct inode
*dir
, struct qstr
*name
,
2884 struct nfs_fh
*fhandle
, struct nfs_fattr
*fattr
)
2887 struct rpc_clnt
*client
= NFS_CLIENT(dir
);
2889 status
= nfs4_proc_lookup_common(&client
, dir
, name
, fhandle
, fattr
);
2890 if (client
!= NFS_CLIENT(dir
)) {
2891 rpc_shutdown_client(client
);
2892 nfs_fixup_secinfo_attributes(fattr
);
2898 nfs4_proc_lookup_mountpoint(struct inode
*dir
, struct qstr
*name
,
2899 struct nfs_fh
*fhandle
, struct nfs_fattr
*fattr
)
2902 struct rpc_clnt
*client
= rpc_clone_client(NFS_CLIENT(dir
));
2904 status
= nfs4_proc_lookup_common(&client
, dir
, name
, fhandle
, fattr
);
2906 rpc_shutdown_client(client
);
2907 return ERR_PTR(status
);
2912 static int _nfs4_proc_access(struct inode
*inode
, struct nfs_access_entry
*entry
)
2914 struct nfs_server
*server
= NFS_SERVER(inode
);
2915 struct nfs4_accessargs args
= {
2916 .fh
= NFS_FH(inode
),
2917 .bitmask
= server
->cache_consistency_bitmask
,
2919 struct nfs4_accessres res
= {
2922 struct rpc_message msg
= {
2923 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_ACCESS
],
2926 .rpc_cred
= entry
->cred
,
2928 int mode
= entry
->mask
;
2932 * Determine which access bits we want to ask for...
2934 if (mode
& MAY_READ
)
2935 args
.access
|= NFS4_ACCESS_READ
;
2936 if (S_ISDIR(inode
->i_mode
)) {
2937 if (mode
& MAY_WRITE
)
2938 args
.access
|= NFS4_ACCESS_MODIFY
| NFS4_ACCESS_EXTEND
| NFS4_ACCESS_DELETE
;
2939 if (mode
& MAY_EXEC
)
2940 args
.access
|= NFS4_ACCESS_LOOKUP
;
2942 if (mode
& MAY_WRITE
)
2943 args
.access
|= NFS4_ACCESS_MODIFY
| NFS4_ACCESS_EXTEND
;
2944 if (mode
& MAY_EXEC
)
2945 args
.access
|= NFS4_ACCESS_EXECUTE
;
2948 res
.fattr
= nfs_alloc_fattr();
2949 if (res
.fattr
== NULL
)
2952 status
= nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
2954 nfs_access_set_mask(entry
, res
.access
);
2955 nfs_refresh_inode(inode
, res
.fattr
);
2957 nfs_free_fattr(res
.fattr
);
2961 static int nfs4_proc_access(struct inode
*inode
, struct nfs_access_entry
*entry
)
2963 struct nfs4_exception exception
= { };
2966 err
= nfs4_handle_exception(NFS_SERVER(inode
),
2967 _nfs4_proc_access(inode
, entry
),
2969 } while (exception
.retry
);
2974 * TODO: For the time being, we don't try to get any attributes
2975 * along with any of the zero-copy operations READ, READDIR,
2978 * In the case of the first three, we want to put the GETATTR
2979 * after the read-type operation -- this is because it is hard
2980 * to predict the length of a GETATTR response in v4, and thus
2981 * align the READ data correctly. This means that the GETATTR
2982 * may end up partially falling into the page cache, and we should
2983 * shift it into the 'tail' of the xdr_buf before processing.
2984 * To do this efficiently, we need to know the total length
2985 * of data received, which doesn't seem to be available outside
2988 * In the case of WRITE, we also want to put the GETATTR after
2989 * the operation -- in this case because we want to make sure
2990 * we get the post-operation mtime and size.
2992 * Both of these changes to the XDR layer would in fact be quite
2993 * minor, but I decided to leave them for a subsequent patch.
2995 static int _nfs4_proc_readlink(struct inode
*inode
, struct page
*page
,
2996 unsigned int pgbase
, unsigned int pglen
)
2998 struct nfs4_readlink args
= {
2999 .fh
= NFS_FH(inode
),
3004 struct nfs4_readlink_res res
;
3005 struct rpc_message msg
= {
3006 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_READLINK
],
3011 return nfs4_call_sync(NFS_SERVER(inode
)->client
, NFS_SERVER(inode
), &msg
, &args
.seq_args
, &res
.seq_res
, 0);
3014 static int nfs4_proc_readlink(struct inode
*inode
, struct page
*page
,
3015 unsigned int pgbase
, unsigned int pglen
)
3017 struct nfs4_exception exception
= { };
3020 err
= nfs4_handle_exception(NFS_SERVER(inode
),
3021 _nfs4_proc_readlink(inode
, page
, pgbase
, pglen
),
3023 } while (exception
.retry
);
3028 * This is just for mknod. open(O_CREAT) will always do ->open_context().
3031 nfs4_proc_create(struct inode
*dir
, struct dentry
*dentry
, struct iattr
*sattr
,
3034 struct nfs_open_context
*ctx
;
3035 struct nfs4_state
*state
;
3038 ctx
= alloc_nfs_open_context(dentry
, FMODE_READ
);
3040 return PTR_ERR(ctx
);
3042 sattr
->ia_mode
&= ~current_umask();
3043 state
= nfs4_do_open(dir
, dentry
, ctx
->mode
,
3044 flags
, sattr
, ctx
->cred
,
3045 &ctx
->mdsthreshold
);
3047 if (IS_ERR(state
)) {
3048 status
= PTR_ERR(state
);
3051 d_add(dentry
, igrab(state
->inode
));
3052 nfs_set_verifier(dentry
, nfs_save_change_attribute(dir
));
3055 put_nfs_open_context(ctx
);
3059 static int _nfs4_proc_remove(struct inode
*dir
, struct qstr
*name
)
3061 struct nfs_server
*server
= NFS_SERVER(dir
);
3062 struct nfs_removeargs args
= {
3066 struct nfs_removeres res
= {
3069 struct rpc_message msg
= {
3070 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_REMOVE
],
3076 status
= nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 1);
3078 update_changeattr(dir
, &res
.cinfo
);
3082 static int nfs4_proc_remove(struct inode
*dir
, struct qstr
*name
)
3084 struct nfs4_exception exception
= { };
3087 err
= nfs4_handle_exception(NFS_SERVER(dir
),
3088 _nfs4_proc_remove(dir
, name
),
3090 } while (exception
.retry
);
3094 static void nfs4_proc_unlink_setup(struct rpc_message
*msg
, struct inode
*dir
)
3096 struct nfs_server
*server
= NFS_SERVER(dir
);
3097 struct nfs_removeargs
*args
= msg
->rpc_argp
;
3098 struct nfs_removeres
*res
= msg
->rpc_resp
;
3100 res
->server
= server
;
3101 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_REMOVE
];
3102 nfs41_init_sequence(&args
->seq_args
, &res
->seq_res
, 1);
3105 static void nfs4_proc_unlink_rpc_prepare(struct rpc_task
*task
, struct nfs_unlinkdata
*data
)
3107 nfs4_setup_sequence(NFS_SERVER(data
->dir
),
3108 &data
->args
.seq_args
,
3113 static int nfs4_proc_unlink_done(struct rpc_task
*task
, struct inode
*dir
)
3115 struct nfs_removeres
*res
= task
->tk_msg
.rpc_resp
;
3117 if (!nfs4_sequence_done(task
, &res
->seq_res
))
3119 if (nfs4_async_handle_error(task
, res
->server
, NULL
) == -EAGAIN
)
3121 update_changeattr(dir
, &res
->cinfo
);
3125 static void nfs4_proc_rename_setup(struct rpc_message
*msg
, struct inode
*dir
)
3127 struct nfs_server
*server
= NFS_SERVER(dir
);
3128 struct nfs_renameargs
*arg
= msg
->rpc_argp
;
3129 struct nfs_renameres
*res
= msg
->rpc_resp
;
3131 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RENAME
];
3132 res
->server
= server
;
3133 nfs41_init_sequence(&arg
->seq_args
, &res
->seq_res
, 1);
3136 static void nfs4_proc_rename_rpc_prepare(struct rpc_task
*task
, struct nfs_renamedata
*data
)
3138 nfs4_setup_sequence(NFS_SERVER(data
->old_dir
),
3139 &data
->args
.seq_args
,
3144 static int nfs4_proc_rename_done(struct rpc_task
*task
, struct inode
*old_dir
,
3145 struct inode
*new_dir
)
3147 struct nfs_renameres
*res
= task
->tk_msg
.rpc_resp
;
3149 if (!nfs4_sequence_done(task
, &res
->seq_res
))
3151 if (nfs4_async_handle_error(task
, res
->server
, NULL
) == -EAGAIN
)
3154 update_changeattr(old_dir
, &res
->old_cinfo
);
3155 update_changeattr(new_dir
, &res
->new_cinfo
);
3159 static int _nfs4_proc_rename(struct inode
*old_dir
, struct qstr
*old_name
,
3160 struct inode
*new_dir
, struct qstr
*new_name
)
3162 struct nfs_server
*server
= NFS_SERVER(old_dir
);
3163 struct nfs_renameargs arg
= {
3164 .old_dir
= NFS_FH(old_dir
),
3165 .new_dir
= NFS_FH(new_dir
),
3166 .old_name
= old_name
,
3167 .new_name
= new_name
,
3169 struct nfs_renameres res
= {
3172 struct rpc_message msg
= {
3173 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RENAME
],
3177 int status
= -ENOMEM
;
3179 status
= nfs4_call_sync(server
->client
, server
, &msg
, &arg
.seq_args
, &res
.seq_res
, 1);
3181 update_changeattr(old_dir
, &res
.old_cinfo
);
3182 update_changeattr(new_dir
, &res
.new_cinfo
);
3187 static int nfs4_proc_rename(struct inode
*old_dir
, struct qstr
*old_name
,
3188 struct inode
*new_dir
, struct qstr
*new_name
)
3190 struct nfs4_exception exception
= { };
3193 err
= nfs4_handle_exception(NFS_SERVER(old_dir
),
3194 _nfs4_proc_rename(old_dir
, old_name
,
3197 } while (exception
.retry
);
3201 static int _nfs4_proc_link(struct inode
*inode
, struct inode
*dir
, struct qstr
*name
)
3203 struct nfs_server
*server
= NFS_SERVER(inode
);
3204 struct nfs4_link_arg arg
= {
3205 .fh
= NFS_FH(inode
),
3206 .dir_fh
= NFS_FH(dir
),
3208 .bitmask
= server
->attr_bitmask
,
3210 struct nfs4_link_res res
= {
3213 struct rpc_message msg
= {
3214 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LINK
],
3218 int status
= -ENOMEM
;
3220 res
.fattr
= nfs_alloc_fattr();
3221 if (res
.fattr
== NULL
)
3224 status
= nfs4_call_sync(server
->client
, server
, &msg
, &arg
.seq_args
, &res
.seq_res
, 1);
3226 update_changeattr(dir
, &res
.cinfo
);
3227 nfs_post_op_update_inode(inode
, res
.fattr
);
3230 nfs_free_fattr(res
.fattr
);
3234 static int nfs4_proc_link(struct inode
*inode
, struct inode
*dir
, struct qstr
*name
)
3236 struct nfs4_exception exception
= { };
3239 err
= nfs4_handle_exception(NFS_SERVER(inode
),
3240 _nfs4_proc_link(inode
, dir
, name
),
3242 } while (exception
.retry
);
3246 struct nfs4_createdata
{
3247 struct rpc_message msg
;
3248 struct nfs4_create_arg arg
;
3249 struct nfs4_create_res res
;
3251 struct nfs_fattr fattr
;
3254 static struct nfs4_createdata
*nfs4_alloc_createdata(struct inode
*dir
,
3255 struct qstr
*name
, struct iattr
*sattr
, u32 ftype
)
3257 struct nfs4_createdata
*data
;
3259 data
= kzalloc(sizeof(*data
), GFP_KERNEL
);
3261 struct nfs_server
*server
= NFS_SERVER(dir
);
3263 data
->msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_CREATE
];
3264 data
->msg
.rpc_argp
= &data
->arg
;
3265 data
->msg
.rpc_resp
= &data
->res
;
3266 data
->arg
.dir_fh
= NFS_FH(dir
);
3267 data
->arg
.server
= server
;
3268 data
->arg
.name
= name
;
3269 data
->arg
.attrs
= sattr
;
3270 data
->arg
.ftype
= ftype
;
3271 data
->arg
.bitmask
= server
->attr_bitmask
;
3272 data
->res
.server
= server
;
3273 data
->res
.fh
= &data
->fh
;
3274 data
->res
.fattr
= &data
->fattr
;
3275 nfs_fattr_init(data
->res
.fattr
);
3280 static int nfs4_do_create(struct inode
*dir
, struct dentry
*dentry
, struct nfs4_createdata
*data
)
3282 int status
= nfs4_call_sync(NFS_SERVER(dir
)->client
, NFS_SERVER(dir
), &data
->msg
,
3283 &data
->arg
.seq_args
, &data
->res
.seq_res
, 1);
3285 update_changeattr(dir
, &data
->res
.dir_cinfo
);
3286 status
= nfs_instantiate(dentry
, data
->res
.fh
, data
->res
.fattr
);
3291 static void nfs4_free_createdata(struct nfs4_createdata
*data
)
3296 static int _nfs4_proc_symlink(struct inode
*dir
, struct dentry
*dentry
,
3297 struct page
*page
, unsigned int len
, struct iattr
*sattr
)
3299 struct nfs4_createdata
*data
;
3300 int status
= -ENAMETOOLONG
;
3302 if (len
> NFS4_MAXPATHLEN
)
3306 data
= nfs4_alloc_createdata(dir
, &dentry
->d_name
, sattr
, NF4LNK
);
3310 data
->msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SYMLINK
];
3311 data
->arg
.u
.symlink
.pages
= &page
;
3312 data
->arg
.u
.symlink
.len
= len
;
3314 status
= nfs4_do_create(dir
, dentry
, data
);
3316 nfs4_free_createdata(data
);
3321 static int nfs4_proc_symlink(struct inode
*dir
, struct dentry
*dentry
,
3322 struct page
*page
, unsigned int len
, struct iattr
*sattr
)
3324 struct nfs4_exception exception
= { };
3327 err
= nfs4_handle_exception(NFS_SERVER(dir
),
3328 _nfs4_proc_symlink(dir
, dentry
, page
,
3331 } while (exception
.retry
);
3335 static int _nfs4_proc_mkdir(struct inode
*dir
, struct dentry
*dentry
,
3336 struct iattr
*sattr
)
3338 struct nfs4_createdata
*data
;
3339 int status
= -ENOMEM
;
3341 data
= nfs4_alloc_createdata(dir
, &dentry
->d_name
, sattr
, NF4DIR
);
3345 status
= nfs4_do_create(dir
, dentry
, data
);
3347 nfs4_free_createdata(data
);
3352 static int nfs4_proc_mkdir(struct inode
*dir
, struct dentry
*dentry
,
3353 struct iattr
*sattr
)
3355 struct nfs4_exception exception
= { };
3358 sattr
->ia_mode
&= ~current_umask();
3360 err
= nfs4_handle_exception(NFS_SERVER(dir
),
3361 _nfs4_proc_mkdir(dir
, dentry
, sattr
),
3363 } while (exception
.retry
);
3367 static int _nfs4_proc_readdir(struct dentry
*dentry
, struct rpc_cred
*cred
,
3368 u64 cookie
, struct page
**pages
, unsigned int count
, int plus
)
3370 struct inode
*dir
= dentry
->d_inode
;
3371 struct nfs4_readdir_arg args
= {
3376 .bitmask
= NFS_SERVER(dentry
->d_inode
)->attr_bitmask
,
3379 struct nfs4_readdir_res res
;
3380 struct rpc_message msg
= {
3381 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_READDIR
],
3388 dprintk("%s: dentry = %s/%s, cookie = %Lu\n", __func__
,
3389 dentry
->d_parent
->d_name
.name
,
3390 dentry
->d_name
.name
,
3391 (unsigned long long)cookie
);
3392 nfs4_setup_readdir(cookie
, NFS_I(dir
)->cookieverf
, dentry
, &args
);
3393 res
.pgbase
= args
.pgbase
;
3394 status
= nfs4_call_sync(NFS_SERVER(dir
)->client
, NFS_SERVER(dir
), &msg
, &args
.seq_args
, &res
.seq_res
, 0);
3396 memcpy(NFS_I(dir
)->cookieverf
, res
.verifier
.data
, NFS4_VERIFIER_SIZE
);
3397 status
+= args
.pgbase
;
3400 nfs_invalidate_atime(dir
);
3402 dprintk("%s: returns %d\n", __func__
, status
);
3406 static int nfs4_proc_readdir(struct dentry
*dentry
, struct rpc_cred
*cred
,
3407 u64 cookie
, struct page
**pages
, unsigned int count
, int plus
)
3409 struct nfs4_exception exception
= { };
3412 err
= nfs4_handle_exception(NFS_SERVER(dentry
->d_inode
),
3413 _nfs4_proc_readdir(dentry
, cred
, cookie
,
3414 pages
, count
, plus
),
3416 } while (exception
.retry
);
3420 static int _nfs4_proc_mknod(struct inode
*dir
, struct dentry
*dentry
,
3421 struct iattr
*sattr
, dev_t rdev
)
3423 struct nfs4_createdata
*data
;
3424 int mode
= sattr
->ia_mode
;
3425 int status
= -ENOMEM
;
3427 data
= nfs4_alloc_createdata(dir
, &dentry
->d_name
, sattr
, NF4SOCK
);
3432 data
->arg
.ftype
= NF4FIFO
;
3433 else if (S_ISBLK(mode
)) {
3434 data
->arg
.ftype
= NF4BLK
;
3435 data
->arg
.u
.device
.specdata1
= MAJOR(rdev
);
3436 data
->arg
.u
.device
.specdata2
= MINOR(rdev
);
3438 else if (S_ISCHR(mode
)) {
3439 data
->arg
.ftype
= NF4CHR
;
3440 data
->arg
.u
.device
.specdata1
= MAJOR(rdev
);
3441 data
->arg
.u
.device
.specdata2
= MINOR(rdev
);
3442 } else if (!S_ISSOCK(mode
)) {
3447 status
= nfs4_do_create(dir
, dentry
, data
);
3449 nfs4_free_createdata(data
);
3454 static int nfs4_proc_mknod(struct inode
*dir
, struct dentry
*dentry
,
3455 struct iattr
*sattr
, dev_t rdev
)
3457 struct nfs4_exception exception
= { };
3460 sattr
->ia_mode
&= ~current_umask();
3462 err
= nfs4_handle_exception(NFS_SERVER(dir
),
3463 _nfs4_proc_mknod(dir
, dentry
, sattr
, rdev
),
3465 } while (exception
.retry
);
3469 static int _nfs4_proc_statfs(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
3470 struct nfs_fsstat
*fsstat
)
3472 struct nfs4_statfs_arg args
= {
3474 .bitmask
= server
->attr_bitmask
,
3476 struct nfs4_statfs_res res
= {
3479 struct rpc_message msg
= {
3480 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_STATFS
],
3485 nfs_fattr_init(fsstat
->fattr
);
3486 return nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
3489 static int nfs4_proc_statfs(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fsstat
*fsstat
)
3491 struct nfs4_exception exception
= { };
3494 err
= nfs4_handle_exception(server
,
3495 _nfs4_proc_statfs(server
, fhandle
, fsstat
),
3497 } while (exception
.retry
);
3501 static int _nfs4_do_fsinfo(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
3502 struct nfs_fsinfo
*fsinfo
)
3504 struct nfs4_fsinfo_arg args
= {
3506 .bitmask
= server
->attr_bitmask
,
3508 struct nfs4_fsinfo_res res
= {
3511 struct rpc_message msg
= {
3512 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_FSINFO
],
3517 return nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
3520 static int nfs4_do_fsinfo(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fsinfo
*fsinfo
)
3522 struct nfs4_exception exception
= { };
3523 unsigned long now
= jiffies
;
3527 err
= _nfs4_do_fsinfo(server
, fhandle
, fsinfo
);
3529 struct nfs_client
*clp
= server
->nfs_client
;
3531 spin_lock(&clp
->cl_lock
);
3532 clp
->cl_lease_time
= fsinfo
->lease_time
* HZ
;
3533 clp
->cl_last_renewal
= now
;
3534 spin_unlock(&clp
->cl_lock
);
3537 err
= nfs4_handle_exception(server
, err
, &exception
);
3538 } while (exception
.retry
);
3542 static int nfs4_proc_fsinfo(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fsinfo
*fsinfo
)
3546 nfs_fattr_init(fsinfo
->fattr
);
3547 error
= nfs4_do_fsinfo(server
, fhandle
, fsinfo
);
3549 /* block layout checks this! */
3550 server
->pnfs_blksize
= fsinfo
->blksize
;
3551 set_pnfs_layoutdriver(server
, fhandle
, fsinfo
->layouttype
);
3557 static int _nfs4_proc_pathconf(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
3558 struct nfs_pathconf
*pathconf
)
3560 struct nfs4_pathconf_arg args
= {
3562 .bitmask
= server
->attr_bitmask
,
3564 struct nfs4_pathconf_res res
= {
3565 .pathconf
= pathconf
,
3567 struct rpc_message msg
= {
3568 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_PATHCONF
],
3573 /* None of the pathconf attributes are mandatory to implement */
3574 if ((args
.bitmask
[0] & nfs4_pathconf_bitmap
[0]) == 0) {
3575 memset(pathconf
, 0, sizeof(*pathconf
));
3579 nfs_fattr_init(pathconf
->fattr
);
3580 return nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
3583 static int nfs4_proc_pathconf(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
3584 struct nfs_pathconf
*pathconf
)
3586 struct nfs4_exception exception
= { };
3590 err
= nfs4_handle_exception(server
,
3591 _nfs4_proc_pathconf(server
, fhandle
, pathconf
),
3593 } while (exception
.retry
);
3597 int nfs4_set_rw_stateid(nfs4_stateid
*stateid
,
3598 const struct nfs_open_context
*ctx
,
3599 const struct nfs_lock_context
*l_ctx
,
3602 const struct nfs_lockowner
*lockowner
= NULL
;
3605 lockowner
= &l_ctx
->lockowner
;
3606 return nfs4_select_rw_stateid(stateid
, ctx
->state
, fmode
, lockowner
);
3608 EXPORT_SYMBOL_GPL(nfs4_set_rw_stateid
);
3610 static bool nfs4_stateid_is_current(nfs4_stateid
*stateid
,
3611 const struct nfs_open_context
*ctx
,
3612 const struct nfs_lock_context
*l_ctx
,
3615 nfs4_stateid current_stateid
;
3617 /* If the current stateid represents a lost lock, then exit */
3618 if (nfs4_set_rw_stateid(¤t_stateid
, ctx
, l_ctx
, fmode
) == -EIO
)
3620 return nfs4_stateid_match(stateid
, ¤t_stateid
);
3623 static bool nfs4_error_stateid_expired(int err
)
3626 case -NFS4ERR_DELEG_REVOKED
:
3627 case -NFS4ERR_ADMIN_REVOKED
:
3628 case -NFS4ERR_BAD_STATEID
:
3629 case -NFS4ERR_STALE_STATEID
:
3630 case -NFS4ERR_OLD_STATEID
:
3631 case -NFS4ERR_OPENMODE
:
3632 case -NFS4ERR_EXPIRED
:
3638 void __nfs4_read_done_cb(struct nfs_read_data
*data
)
3640 nfs_invalidate_atime(data
->header
->inode
);
3643 static int nfs4_read_done_cb(struct rpc_task
*task
, struct nfs_read_data
*data
)
3645 struct nfs_server
*server
= NFS_SERVER(data
->header
->inode
);
3647 if (nfs4_async_handle_error(task
, server
, data
->args
.context
->state
) == -EAGAIN
) {
3648 rpc_restart_call_prepare(task
);
3652 __nfs4_read_done_cb(data
);
3653 if (task
->tk_status
> 0)
3654 renew_lease(server
, data
->timestamp
);
3658 static bool nfs4_read_stateid_changed(struct rpc_task
*task
,
3659 struct nfs_readargs
*args
)
3662 if (!nfs4_error_stateid_expired(task
->tk_status
) ||
3663 nfs4_stateid_is_current(&args
->stateid
,
3668 rpc_restart_call_prepare(task
);
3672 static int nfs4_read_done(struct rpc_task
*task
, struct nfs_read_data
*data
)
3675 dprintk("--> %s\n", __func__
);
3677 if (!nfs4_sequence_done(task
, &data
->res
.seq_res
))
3679 if (nfs4_read_stateid_changed(task
, &data
->args
))
3681 return data
->read_done_cb
? data
->read_done_cb(task
, data
) :
3682 nfs4_read_done_cb(task
, data
);
3685 static void nfs4_proc_read_setup(struct nfs_read_data
*data
, struct rpc_message
*msg
)
3687 data
->timestamp
= jiffies
;
3688 data
->read_done_cb
= nfs4_read_done_cb
;
3689 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_READ
];
3690 nfs41_init_sequence(&data
->args
.seq_args
, &data
->res
.seq_res
, 0);
3693 static void nfs4_proc_read_rpc_prepare(struct rpc_task
*task
, struct nfs_read_data
*data
)
3695 if (nfs4_setup_sequence(NFS_SERVER(data
->header
->inode
),
3696 &data
->args
.seq_args
,
3700 nfs4_set_rw_stateid(&data
->args
.stateid
, data
->args
.context
,
3701 data
->args
.lock_context
, FMODE_READ
);
3704 static int nfs4_write_done_cb(struct rpc_task
*task
, struct nfs_write_data
*data
)
3706 struct inode
*inode
= data
->header
->inode
;
3708 if (nfs4_async_handle_error(task
, NFS_SERVER(inode
), data
->args
.context
->state
) == -EAGAIN
) {
3709 rpc_restart_call_prepare(task
);
3712 if (task
->tk_status
>= 0) {
3713 renew_lease(NFS_SERVER(inode
), data
->timestamp
);
3714 nfs_post_op_update_inode_force_wcc(inode
, &data
->fattr
);
3719 static bool nfs4_write_stateid_changed(struct rpc_task
*task
,
3720 struct nfs_writeargs
*args
)
3723 if (!nfs4_error_stateid_expired(task
->tk_status
) ||
3724 nfs4_stateid_is_current(&args
->stateid
,
3729 rpc_restart_call_prepare(task
);
3733 static int nfs4_write_done(struct rpc_task
*task
, struct nfs_write_data
*data
)
3735 if (!nfs4_sequence_done(task
, &data
->res
.seq_res
))
3737 if (nfs4_write_stateid_changed(task
, &data
->args
))
3739 return data
->write_done_cb
? data
->write_done_cb(task
, data
) :
3740 nfs4_write_done_cb(task
, data
);
3744 bool nfs4_write_need_cache_consistency_data(const struct nfs_write_data
*data
)
3746 const struct nfs_pgio_header
*hdr
= data
->header
;
3748 /* Don't request attributes for pNFS or O_DIRECT writes */
3749 if (data
->ds_clp
!= NULL
|| hdr
->dreq
!= NULL
)
3751 /* Otherwise, request attributes if and only if we don't hold
3754 return nfs4_have_delegation(hdr
->inode
, FMODE_READ
) == 0;
3757 static void nfs4_proc_write_setup(struct nfs_write_data
*data
, struct rpc_message
*msg
)
3759 struct nfs_server
*server
= NFS_SERVER(data
->header
->inode
);
3761 if (!nfs4_write_need_cache_consistency_data(data
)) {
3762 data
->args
.bitmask
= NULL
;
3763 data
->res
.fattr
= NULL
;
3765 data
->args
.bitmask
= server
->cache_consistency_bitmask
;
3767 if (!data
->write_done_cb
)
3768 data
->write_done_cb
= nfs4_write_done_cb
;
3769 data
->res
.server
= server
;
3770 data
->timestamp
= jiffies
;
3772 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_WRITE
];
3773 nfs41_init_sequence(&data
->args
.seq_args
, &data
->res
.seq_res
, 1);
3776 static void nfs4_proc_write_rpc_prepare(struct rpc_task
*task
, struct nfs_write_data
*data
)
3778 if (nfs4_setup_sequence(NFS_SERVER(data
->header
->inode
),
3779 &data
->args
.seq_args
,
3783 nfs4_set_rw_stateid(&data
->args
.stateid
, data
->args
.context
,
3784 data
->args
.lock_context
, FMODE_WRITE
);
3787 static void nfs4_proc_commit_rpc_prepare(struct rpc_task
*task
, struct nfs_commit_data
*data
)
3789 nfs4_setup_sequence(NFS_SERVER(data
->inode
),
3790 &data
->args
.seq_args
,
3795 static int nfs4_commit_done_cb(struct rpc_task
*task
, struct nfs_commit_data
*data
)
3797 struct inode
*inode
= data
->inode
;
3799 if (nfs4_async_handle_error(task
, NFS_SERVER(inode
), NULL
) == -EAGAIN
) {
3800 rpc_restart_call_prepare(task
);
3806 static int nfs4_commit_done(struct rpc_task
*task
, struct nfs_commit_data
*data
)
3808 if (!nfs4_sequence_done(task
, &data
->res
.seq_res
))
3810 return data
->commit_done_cb(task
, data
);
3813 static void nfs4_proc_commit_setup(struct nfs_commit_data
*data
, struct rpc_message
*msg
)
3815 struct nfs_server
*server
= NFS_SERVER(data
->inode
);
3817 if (data
->commit_done_cb
== NULL
)
3818 data
->commit_done_cb
= nfs4_commit_done_cb
;
3819 data
->res
.server
= server
;
3820 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_COMMIT
];
3821 nfs41_init_sequence(&data
->args
.seq_args
, &data
->res
.seq_res
, 1);
3824 struct nfs4_renewdata
{
3825 struct nfs_client
*client
;
3826 unsigned long timestamp
;
3830 * nfs4_proc_async_renew(): This is not one of the nfs_rpc_ops; it is a special
3831 * standalone procedure for queueing an asynchronous RENEW.
3833 static void nfs4_renew_release(void *calldata
)
3835 struct nfs4_renewdata
*data
= calldata
;
3836 struct nfs_client
*clp
= data
->client
;
3838 if (atomic_read(&clp
->cl_count
) > 1)
3839 nfs4_schedule_state_renewal(clp
);
3840 nfs_put_client(clp
);
3844 static void nfs4_renew_done(struct rpc_task
*task
, void *calldata
)
3846 struct nfs4_renewdata
*data
= calldata
;
3847 struct nfs_client
*clp
= data
->client
;
3848 unsigned long timestamp
= data
->timestamp
;
3850 if (task
->tk_status
< 0) {
3851 /* Unless we're shutting down, schedule state recovery! */
3852 if (test_bit(NFS_CS_RENEWD
, &clp
->cl_res_state
) == 0)
3854 if (task
->tk_status
!= NFS4ERR_CB_PATH_DOWN
) {
3855 nfs4_schedule_lease_recovery(clp
);
3858 nfs4_schedule_path_down_recovery(clp
);
3860 do_renew_lease(clp
, timestamp
);
3863 static const struct rpc_call_ops nfs4_renew_ops
= {
3864 .rpc_call_done
= nfs4_renew_done
,
3865 .rpc_release
= nfs4_renew_release
,
3868 static int nfs4_proc_async_renew(struct nfs_client
*clp
, struct rpc_cred
*cred
, unsigned renew_flags
)
3870 struct rpc_message msg
= {
3871 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RENEW
],
3875 struct nfs4_renewdata
*data
;
3877 if (renew_flags
== 0)
3879 if (!atomic_inc_not_zero(&clp
->cl_count
))
3881 data
= kmalloc(sizeof(*data
), GFP_NOFS
);
3885 data
->timestamp
= jiffies
;
3886 return rpc_call_async(clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
,
3887 &nfs4_renew_ops
, data
);
3890 static int nfs4_proc_renew(struct nfs_client
*clp
, struct rpc_cred
*cred
)
3892 struct rpc_message msg
= {
3893 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RENEW
],
3897 unsigned long now
= jiffies
;
3900 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
3903 do_renew_lease(clp
, now
);
3907 static inline int nfs4_server_supports_acls(struct nfs_server
*server
)
3909 return (server
->caps
& NFS_CAP_ACLS
)
3910 && (server
->acl_bitmask
& ACL4_SUPPORT_ALLOW_ACL
)
3911 && (server
->acl_bitmask
& ACL4_SUPPORT_DENY_ACL
);
3914 /* Assuming that XATTR_SIZE_MAX is a multiple of PAGE_SIZE, and that
3915 * it's OK to put sizeof(void) * (XATTR_SIZE_MAX/PAGE_SIZE) bytes on
3918 #define NFS4ACL_MAXPAGES DIV_ROUND_UP(XATTR_SIZE_MAX, PAGE_SIZE)
3920 static int buf_to_pages_noslab(const void *buf
, size_t buflen
,
3921 struct page
**pages
, unsigned int *pgbase
)
3923 struct page
*newpage
, **spages
;
3929 len
= min_t(size_t, PAGE_SIZE
, buflen
);
3930 newpage
= alloc_page(GFP_KERNEL
);
3932 if (newpage
== NULL
)
3934 memcpy(page_address(newpage
), buf
, len
);
3939 } while (buflen
!= 0);
3945 __free_page(spages
[rc
-1]);
3949 struct nfs4_cached_acl
{
3955 static void nfs4_set_cached_acl(struct inode
*inode
, struct nfs4_cached_acl
*acl
)
3957 struct nfs_inode
*nfsi
= NFS_I(inode
);
3959 spin_lock(&inode
->i_lock
);
3960 kfree(nfsi
->nfs4_acl
);
3961 nfsi
->nfs4_acl
= acl
;
3962 spin_unlock(&inode
->i_lock
);
3965 static void nfs4_zap_acl_attr(struct inode
*inode
)
3967 nfs4_set_cached_acl(inode
, NULL
);
3970 static inline ssize_t
nfs4_read_cached_acl(struct inode
*inode
, char *buf
, size_t buflen
)
3972 struct nfs_inode
*nfsi
= NFS_I(inode
);
3973 struct nfs4_cached_acl
*acl
;
3976 spin_lock(&inode
->i_lock
);
3977 acl
= nfsi
->nfs4_acl
;
3980 if (buf
== NULL
) /* user is just asking for length */
3982 if (acl
->cached
== 0)
3984 ret
= -ERANGE
; /* see getxattr(2) man page */
3985 if (acl
->len
> buflen
)
3987 memcpy(buf
, acl
->data
, acl
->len
);
3991 spin_unlock(&inode
->i_lock
);
3995 static void nfs4_write_cached_acl(struct inode
*inode
, struct page
**pages
, size_t pgbase
, size_t acl_len
)
3997 struct nfs4_cached_acl
*acl
;
3998 size_t buflen
= sizeof(*acl
) + acl_len
;
4000 if (buflen
<= PAGE_SIZE
) {
4001 acl
= kmalloc(buflen
, GFP_KERNEL
);
4005 _copy_from_pages(acl
->data
, pages
, pgbase
, acl_len
);
4007 acl
= kmalloc(sizeof(*acl
), GFP_KERNEL
);
4014 nfs4_set_cached_acl(inode
, acl
);
4018 * The getxattr API returns the required buffer length when called with a
4019 * NULL buf. The NFSv4 acl tool then calls getxattr again after allocating
4020 * the required buf. On a NULL buf, we send a page of data to the server
4021 * guessing that the ACL request can be serviced by a page. If so, we cache
4022 * up to the page of ACL data, and the 2nd call to getxattr is serviced by
4023 * the cache. If not so, we throw away the page, and cache the required
4024 * length. The next getxattr call will then produce another round trip to
4025 * the server, this time with the input buf of the required size.
4027 static ssize_t
__nfs4_get_acl_uncached(struct inode
*inode
, void *buf
, size_t buflen
)
4029 struct page
*pages
[NFS4ACL_MAXPAGES
] = {NULL
, };
4030 struct nfs_getaclargs args
= {
4031 .fh
= NFS_FH(inode
),
4035 struct nfs_getaclres res
= {
4038 struct rpc_message msg
= {
4039 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GETACL
],
4043 unsigned int npages
= DIV_ROUND_UP(buflen
, PAGE_SIZE
);
4044 int ret
= -ENOMEM
, i
;
4046 /* As long as we're doing a round trip to the server anyway,
4047 * let's be prepared for a page of acl data. */
4050 if (npages
> ARRAY_SIZE(pages
))
4053 for (i
= 0; i
< npages
; i
++) {
4054 pages
[i
] = alloc_page(GFP_KERNEL
);
4059 /* for decoding across pages */
4060 res
.acl_scratch
= alloc_page(GFP_KERNEL
);
4061 if (!res
.acl_scratch
)
4064 args
.acl_len
= npages
* PAGE_SIZE
;
4065 args
.acl_pgbase
= 0;
4067 dprintk("%s buf %p buflen %zu npages %d args.acl_len %zu\n",
4068 __func__
, buf
, buflen
, npages
, args
.acl_len
);
4069 ret
= nfs4_call_sync(NFS_SERVER(inode
)->client
, NFS_SERVER(inode
),
4070 &msg
, &args
.seq_args
, &res
.seq_res
, 0);
4074 /* Handle the case where the passed-in buffer is too short */
4075 if (res
.acl_flags
& NFS4_ACL_TRUNC
) {
4076 /* Did the user only issue a request for the acl length? */
4082 nfs4_write_cached_acl(inode
, pages
, res
.acl_data_offset
, res
.acl_len
);
4084 if (res
.acl_len
> buflen
) {
4088 _copy_from_pages(buf
, pages
, res
.acl_data_offset
, res
.acl_len
);
4093 for (i
= 0; i
< npages
; i
++)
4095 __free_page(pages
[i
]);
4096 if (res
.acl_scratch
)
4097 __free_page(res
.acl_scratch
);
4101 static ssize_t
nfs4_get_acl_uncached(struct inode
*inode
, void *buf
, size_t buflen
)
4103 struct nfs4_exception exception
= { };
4106 ret
= __nfs4_get_acl_uncached(inode
, buf
, buflen
);
4109 ret
= nfs4_handle_exception(NFS_SERVER(inode
), ret
, &exception
);
4110 } while (exception
.retry
);
4114 static ssize_t
nfs4_proc_get_acl(struct inode
*inode
, void *buf
, size_t buflen
)
4116 struct nfs_server
*server
= NFS_SERVER(inode
);
4119 if (!nfs4_server_supports_acls(server
))
4121 ret
= nfs_revalidate_inode(server
, inode
);
4124 if (NFS_I(inode
)->cache_validity
& NFS_INO_INVALID_ACL
)
4125 nfs_zap_acl_cache(inode
);
4126 ret
= nfs4_read_cached_acl(inode
, buf
, buflen
);
4128 /* -ENOENT is returned if there is no ACL or if there is an ACL
4129 * but no cached acl data, just the acl length */
4131 return nfs4_get_acl_uncached(inode
, buf
, buflen
);
4134 static int __nfs4_proc_set_acl(struct inode
*inode
, const void *buf
, size_t buflen
)
4136 struct nfs_server
*server
= NFS_SERVER(inode
);
4137 struct page
*pages
[NFS4ACL_MAXPAGES
];
4138 struct nfs_setaclargs arg
= {
4139 .fh
= NFS_FH(inode
),
4143 struct nfs_setaclres res
;
4144 struct rpc_message msg
= {
4145 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETACL
],
4149 unsigned int npages
= DIV_ROUND_UP(buflen
, PAGE_SIZE
);
4152 if (!nfs4_server_supports_acls(server
))
4154 if (npages
> ARRAY_SIZE(pages
))
4156 i
= buf_to_pages_noslab(buf
, buflen
, arg
.acl_pages
, &arg
.acl_pgbase
);
4159 nfs4_inode_return_delegation(inode
);
4160 ret
= nfs4_call_sync(server
->client
, server
, &msg
, &arg
.seq_args
, &res
.seq_res
, 1);
4163 * Free each page after tx, so the only ref left is
4164 * held by the network stack
4167 put_page(pages
[i
-1]);
4170 * Acl update can result in inode attribute update.
4171 * so mark the attribute cache invalid.
4173 spin_lock(&inode
->i_lock
);
4174 NFS_I(inode
)->cache_validity
|= NFS_INO_INVALID_ATTR
;
4175 spin_unlock(&inode
->i_lock
);
4176 nfs_access_zap_cache(inode
);
4177 nfs_zap_acl_cache(inode
);
4181 static int nfs4_proc_set_acl(struct inode
*inode
, const void *buf
, size_t buflen
)
4183 struct nfs4_exception exception
= { };
4186 err
= nfs4_handle_exception(NFS_SERVER(inode
),
4187 __nfs4_proc_set_acl(inode
, buf
, buflen
),
4189 } while (exception
.retry
);
4194 nfs4_async_handle_error(struct rpc_task
*task
, const struct nfs_server
*server
, struct nfs4_state
*state
)
4196 struct nfs_client
*clp
= server
->nfs_client
;
4198 if (task
->tk_status
>= 0)
4200 switch(task
->tk_status
) {
4201 case -NFS4ERR_DELEG_REVOKED
:
4202 case -NFS4ERR_ADMIN_REVOKED
:
4203 case -NFS4ERR_BAD_STATEID
:
4206 nfs_remove_bad_delegation(state
->inode
);
4207 case -NFS4ERR_OPENMODE
:
4210 if (nfs4_schedule_stateid_recovery(server
, state
) < 0)
4211 goto stateid_invalid
;
4212 goto wait_on_recovery
;
4213 case -NFS4ERR_EXPIRED
:
4214 if (state
!= NULL
) {
4215 if (nfs4_schedule_stateid_recovery(server
, state
) < 0)
4216 goto stateid_invalid
;
4218 case -NFS4ERR_STALE_STATEID
:
4219 case -NFS4ERR_STALE_CLIENTID
:
4220 nfs4_schedule_lease_recovery(clp
);
4221 goto wait_on_recovery
;
4222 #if defined(CONFIG_NFS_V4_1)
4223 case -NFS4ERR_BADSESSION
:
4224 case -NFS4ERR_BADSLOT
:
4225 case -NFS4ERR_BAD_HIGH_SLOT
:
4226 case -NFS4ERR_DEADSESSION
:
4227 case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION
:
4228 case -NFS4ERR_SEQ_FALSE_RETRY
:
4229 case -NFS4ERR_SEQ_MISORDERED
:
4230 dprintk("%s ERROR %d, Reset session\n", __func__
,
4232 nfs4_schedule_session_recovery(clp
->cl_session
, task
->tk_status
);
4233 goto wait_on_recovery
;
4234 #endif /* CONFIG_NFS_V4_1 */
4235 case -NFS4ERR_DELAY
:
4236 nfs_inc_server_stats(server
, NFSIOS_DELAY
);
4237 case -NFS4ERR_GRACE
:
4238 rpc_delay(task
, NFS4_POLL_RETRY_MAX
);
4239 task
->tk_status
= 0;
4241 case -NFS4ERR_RETRY_UNCACHED_REP
:
4242 case -NFS4ERR_OLD_STATEID
:
4243 task
->tk_status
= 0;
4246 task
->tk_status
= nfs4_map_errors(task
->tk_status
);
4249 task
->tk_status
= -EIO
;
4252 rpc_sleep_on(&clp
->cl_rpcwaitq
, task
, NULL
);
4253 if (test_bit(NFS4CLNT_MANAGER_RUNNING
, &clp
->cl_state
) == 0)
4254 rpc_wake_up_queued_task(&clp
->cl_rpcwaitq
, task
);
4255 task
->tk_status
= 0;
4259 static void nfs4_init_boot_verifier(const struct nfs_client
*clp
,
4260 nfs4_verifier
*bootverf
)
4264 if (test_bit(NFS4CLNT_PURGE_STATE
, &clp
->cl_state
)) {
4265 /* An impossible timestamp guarantees this value
4266 * will never match a generated boot time. */
4268 verf
[1] = (__be32
)(NSEC_PER_SEC
+ 1);
4270 struct nfs_net
*nn
= net_generic(clp
->cl_net
, nfs_net_id
);
4271 verf
[0] = (__be32
)nn
->boot_time
.tv_sec
;
4272 verf
[1] = (__be32
)nn
->boot_time
.tv_nsec
;
4274 memcpy(bootverf
->data
, verf
, sizeof(bootverf
->data
));
4278 nfs4_init_nonuniform_client_string(const struct nfs_client
*clp
,
4279 char *buf
, size_t len
)
4281 unsigned int result
;
4284 result
= scnprintf(buf
, len
, "Linux NFSv4.0 %s/%s %s",
4286 rpc_peeraddr2str(clp
->cl_rpcclient
,
4288 rpc_peeraddr2str(clp
->cl_rpcclient
,
4289 RPC_DISPLAY_PROTO
));
4295 nfs4_init_uniform_client_string(const struct nfs_client
*clp
,
4296 char *buf
, size_t len
)
4298 char *nodename
= clp
->cl_rpcclient
->cl_nodename
;
4300 if (nfs4_client_id_uniquifier
[0] != '\0')
4301 nodename
= nfs4_client_id_uniquifier
;
4302 return scnprintf(buf
, len
, "Linux NFSv%u.%u %s",
4303 clp
->rpc_ops
->version
, clp
->cl_minorversion
,
4308 * nfs4_proc_setclientid - Negotiate client ID
4309 * @clp: state data structure
4310 * @program: RPC program for NFSv4 callback service
4311 * @port: IP port number for NFS4 callback service
4312 * @cred: RPC credential to use for this call
4313 * @res: where to place the result
4315 * Returns zero, a negative errno, or a negative NFS4ERR status code.
4317 int nfs4_proc_setclientid(struct nfs_client
*clp
, u32 program
,
4318 unsigned short port
, struct rpc_cred
*cred
,
4319 struct nfs4_setclientid_res
*res
)
4321 nfs4_verifier sc_verifier
;
4322 struct nfs4_setclientid setclientid
= {
4323 .sc_verifier
= &sc_verifier
,
4325 .sc_cb_ident
= clp
->cl_cb_ident
,
4327 struct rpc_message msg
= {
4328 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETCLIENTID
],
4329 .rpc_argp
= &setclientid
,
4335 /* nfs_client_id4 */
4336 nfs4_init_boot_verifier(clp
, &sc_verifier
);
4337 if (test_bit(NFS_CS_MIGRATION
, &clp
->cl_flags
))
4338 setclientid
.sc_name_len
=
4339 nfs4_init_uniform_client_string(clp
,
4340 setclientid
.sc_name
,
4341 sizeof(setclientid
.sc_name
));
4343 setclientid
.sc_name_len
=
4344 nfs4_init_nonuniform_client_string(clp
,
4345 setclientid
.sc_name
,
4346 sizeof(setclientid
.sc_name
));
4349 setclientid
.sc_netid_len
= scnprintf(setclientid
.sc_netid
,
4350 sizeof(setclientid
.sc_netid
),
4351 rpc_peeraddr2str(clp
->cl_rpcclient
,
4352 RPC_DISPLAY_NETID
));
4354 setclientid
.sc_uaddr_len
= scnprintf(setclientid
.sc_uaddr
,
4355 sizeof(setclientid
.sc_uaddr
), "%s.%u.%u",
4356 clp
->cl_ipaddr
, port
>> 8, port
& 255);
4358 dprintk("NFS call setclientid auth=%s, '%.*s'\n",
4359 clp
->cl_rpcclient
->cl_auth
->au_ops
->au_name
,
4360 setclientid
.sc_name_len
, setclientid
.sc_name
);
4361 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
4362 dprintk("NFS reply setclientid: %d\n", status
);
4367 * nfs4_proc_setclientid_confirm - Confirm client ID
4368 * @clp: state data structure
4369 * @res: result of a previous SETCLIENTID
4370 * @cred: RPC credential to use for this call
4372 * Returns zero, a negative errno, or a negative NFS4ERR status code.
4374 int nfs4_proc_setclientid_confirm(struct nfs_client
*clp
,
4375 struct nfs4_setclientid_res
*arg
,
4376 struct rpc_cred
*cred
)
4378 struct rpc_message msg
= {
4379 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETCLIENTID_CONFIRM
],
4385 dprintk("NFS call setclientid_confirm auth=%s, (client ID %llx)\n",
4386 clp
->cl_rpcclient
->cl_auth
->au_ops
->au_name
,
4388 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
4389 dprintk("NFS reply setclientid_confirm: %d\n", status
);
4393 struct nfs4_delegreturndata
{
4394 struct nfs4_delegreturnargs args
;
4395 struct nfs4_delegreturnres res
;
4397 nfs4_stateid stateid
;
4398 unsigned long timestamp
;
4399 struct nfs_fattr fattr
;
4403 static void nfs4_delegreturn_done(struct rpc_task
*task
, void *calldata
)
4405 struct nfs4_delegreturndata
*data
= calldata
;
4407 if (!nfs4_sequence_done(task
, &data
->res
.seq_res
))
4410 switch (task
->tk_status
) {
4412 renew_lease(data
->res
.server
, data
->timestamp
);
4414 case -NFS4ERR_ADMIN_REVOKED
:
4415 case -NFS4ERR_DELEG_REVOKED
:
4416 case -NFS4ERR_BAD_STATEID
:
4417 case -NFS4ERR_OLD_STATEID
:
4418 case -NFS4ERR_STALE_STATEID
:
4419 case -NFS4ERR_EXPIRED
:
4420 task
->tk_status
= 0;
4423 if (nfs4_async_handle_error(task
, data
->res
.server
, NULL
) ==
4425 rpc_restart_call_prepare(task
);
4429 data
->rpc_status
= task
->tk_status
;
4432 static void nfs4_delegreturn_release(void *calldata
)
4437 #if defined(CONFIG_NFS_V4_1)
4438 static void nfs4_delegreturn_prepare(struct rpc_task
*task
, void *data
)
4440 struct nfs4_delegreturndata
*d_data
;
4442 d_data
= (struct nfs4_delegreturndata
*)data
;
4444 nfs4_setup_sequence(d_data
->res
.server
,
4445 &d_data
->args
.seq_args
,
4446 &d_data
->res
.seq_res
,
4449 #endif /* CONFIG_NFS_V4_1 */
4451 static const struct rpc_call_ops nfs4_delegreturn_ops
= {
4452 #if defined(CONFIG_NFS_V4_1)
4453 .rpc_call_prepare
= nfs4_delegreturn_prepare
,
4454 #endif /* CONFIG_NFS_V4_1 */
4455 .rpc_call_done
= nfs4_delegreturn_done
,
4456 .rpc_release
= nfs4_delegreturn_release
,
4459 static int _nfs4_proc_delegreturn(struct inode
*inode
, struct rpc_cred
*cred
, const nfs4_stateid
*stateid
, int issync
)
4461 struct nfs4_delegreturndata
*data
;
4462 struct nfs_server
*server
= NFS_SERVER(inode
);
4463 struct rpc_task
*task
;
4464 struct rpc_message msg
= {
4465 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_DELEGRETURN
],
4468 struct rpc_task_setup task_setup_data
= {
4469 .rpc_client
= server
->client
,
4470 .rpc_message
= &msg
,
4471 .callback_ops
= &nfs4_delegreturn_ops
,
4472 .flags
= RPC_TASK_ASYNC
,
4476 data
= kzalloc(sizeof(*data
), GFP_NOFS
);
4479 nfs41_init_sequence(&data
->args
.seq_args
, &data
->res
.seq_res
, 1);
4480 data
->args
.fhandle
= &data
->fh
;
4481 data
->args
.stateid
= &data
->stateid
;
4482 data
->args
.bitmask
= server
->cache_consistency_bitmask
;
4483 nfs_copy_fh(&data
->fh
, NFS_FH(inode
));
4484 nfs4_stateid_copy(&data
->stateid
, stateid
);
4485 data
->res
.fattr
= &data
->fattr
;
4486 data
->res
.server
= server
;
4487 nfs_fattr_init(data
->res
.fattr
);
4488 data
->timestamp
= jiffies
;
4489 data
->rpc_status
= 0;
4491 task_setup_data
.callback_data
= data
;
4492 msg
.rpc_argp
= &data
->args
;
4493 msg
.rpc_resp
= &data
->res
;
4494 task
= rpc_run_task(&task_setup_data
);
4496 return PTR_ERR(task
);
4499 status
= nfs4_wait_for_completion_rpc_task(task
);
4502 status
= data
->rpc_status
;
4504 nfs_post_op_update_inode_force_wcc(inode
, &data
->fattr
);
4506 nfs_refresh_inode(inode
, &data
->fattr
);
4512 int nfs4_proc_delegreturn(struct inode
*inode
, struct rpc_cred
*cred
, const nfs4_stateid
*stateid
, int issync
)
4514 struct nfs_server
*server
= NFS_SERVER(inode
);
4515 struct nfs4_exception exception
= { };
4518 err
= _nfs4_proc_delegreturn(inode
, cred
, stateid
, issync
);
4520 case -NFS4ERR_STALE_STATEID
:
4521 case -NFS4ERR_EXPIRED
:
4525 err
= nfs4_handle_exception(server
, err
, &exception
);
4526 } while (exception
.retry
);
4530 #define NFS4_LOCK_MINTIMEOUT (1 * HZ)
4531 #define NFS4_LOCK_MAXTIMEOUT (30 * HZ)
4534 * sleep, with exponential backoff, and retry the LOCK operation.
4536 static unsigned long
4537 nfs4_set_lock_task_retry(unsigned long timeout
)
4539 freezable_schedule_timeout_killable_unsafe(timeout
);
4541 if (timeout
> NFS4_LOCK_MAXTIMEOUT
)
4542 return NFS4_LOCK_MAXTIMEOUT
;
4546 static int _nfs4_proc_getlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
4548 struct inode
*inode
= state
->inode
;
4549 struct nfs_server
*server
= NFS_SERVER(inode
);
4550 struct nfs_client
*clp
= server
->nfs_client
;
4551 struct nfs_lockt_args arg
= {
4552 .fh
= NFS_FH(inode
),
4555 struct nfs_lockt_res res
= {
4558 struct rpc_message msg
= {
4559 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOCKT
],
4562 .rpc_cred
= state
->owner
->so_cred
,
4564 struct nfs4_lock_state
*lsp
;
4567 arg
.lock_owner
.clientid
= clp
->cl_clientid
;
4568 status
= nfs4_set_lock_state(state
, request
);
4571 lsp
= request
->fl_u
.nfs4_fl
.owner
;
4572 arg
.lock_owner
.id
= lsp
->ls_seqid
.owner_id
;
4573 arg
.lock_owner
.s_dev
= server
->s_dev
;
4574 status
= nfs4_call_sync(server
->client
, server
, &msg
, &arg
.seq_args
, &res
.seq_res
, 1);
4577 request
->fl_type
= F_UNLCK
;
4579 case -NFS4ERR_DENIED
:
4582 request
->fl_ops
->fl_release_private(request
);
4583 request
->fl_ops
= NULL
;
4588 static int nfs4_proc_getlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
4590 struct nfs4_exception exception
= { };
4594 err
= nfs4_handle_exception(NFS_SERVER(state
->inode
),
4595 _nfs4_proc_getlk(state
, cmd
, request
),
4597 } while (exception
.retry
);
4601 static int do_vfs_lock(struct file
*file
, struct file_lock
*fl
)
4604 switch (fl
->fl_flags
& (FL_POSIX
|FL_FLOCK
)) {
4606 res
= posix_lock_file_wait(file
, fl
);
4609 res
= flock_lock_file_wait(file
, fl
);
4617 struct nfs4_unlockdata
{
4618 struct nfs_locku_args arg
;
4619 struct nfs_locku_res res
;
4620 struct nfs4_lock_state
*lsp
;
4621 struct nfs_open_context
*ctx
;
4622 struct file_lock fl
;
4623 const struct nfs_server
*server
;
4624 unsigned long timestamp
;
4627 static struct nfs4_unlockdata
*nfs4_alloc_unlockdata(struct file_lock
*fl
,
4628 struct nfs_open_context
*ctx
,
4629 struct nfs4_lock_state
*lsp
,
4630 struct nfs_seqid
*seqid
)
4632 struct nfs4_unlockdata
*p
;
4633 struct inode
*inode
= lsp
->ls_state
->inode
;
4635 p
= kzalloc(sizeof(*p
), GFP_NOFS
);
4638 p
->arg
.fh
= NFS_FH(inode
);
4640 p
->arg
.seqid
= seqid
;
4641 p
->res
.seqid
= seqid
;
4642 p
->arg
.stateid
= &lsp
->ls_stateid
;
4644 atomic_inc(&lsp
->ls_count
);
4645 /* Ensure we don't close file until we're done freeing locks! */
4646 p
->ctx
= get_nfs_open_context(ctx
);
4647 memcpy(&p
->fl
, fl
, sizeof(p
->fl
));
4648 p
->server
= NFS_SERVER(inode
);
4652 static void nfs4_locku_release_calldata(void *data
)
4654 struct nfs4_unlockdata
*calldata
= data
;
4655 nfs_free_seqid(calldata
->arg
.seqid
);
4656 nfs4_put_lock_state(calldata
->lsp
);
4657 put_nfs_open_context(calldata
->ctx
);
4661 static void nfs4_locku_done(struct rpc_task
*task
, void *data
)
4663 struct nfs4_unlockdata
*calldata
= data
;
4665 if (!nfs4_sequence_done(task
, &calldata
->res
.seq_res
))
4667 switch (task
->tk_status
) {
4669 nfs4_stateid_copy(&calldata
->lsp
->ls_stateid
,
4670 &calldata
->res
.stateid
);
4671 renew_lease(calldata
->server
, calldata
->timestamp
);
4673 case -NFS4ERR_BAD_STATEID
:
4674 case -NFS4ERR_OLD_STATEID
:
4675 case -NFS4ERR_STALE_STATEID
:
4676 case -NFS4ERR_EXPIRED
:
4679 if (nfs4_async_handle_error(task
, calldata
->server
, NULL
) == -EAGAIN
)
4680 rpc_restart_call_prepare(task
);
4682 nfs_release_seqid(calldata
->arg
.seqid
);
4685 static void nfs4_locku_prepare(struct rpc_task
*task
, void *data
)
4687 struct nfs4_unlockdata
*calldata
= data
;
4689 if (nfs_wait_on_sequence(calldata
->arg
.seqid
, task
) != 0)
4691 if (test_bit(NFS_LOCK_INITIALIZED
, &calldata
->lsp
->ls_flags
) == 0) {
4692 /* Note: exit _without_ running nfs4_locku_done */
4695 calldata
->timestamp
= jiffies
;
4696 if (nfs4_setup_sequence(calldata
->server
,
4697 &calldata
->arg
.seq_args
,
4698 &calldata
->res
.seq_res
,
4700 nfs_release_seqid(calldata
->arg
.seqid
);
4703 task
->tk_action
= NULL
;
4705 nfs4_sequence_done(task
, &calldata
->res
.seq_res
);
4708 static const struct rpc_call_ops nfs4_locku_ops
= {
4709 .rpc_call_prepare
= nfs4_locku_prepare
,
4710 .rpc_call_done
= nfs4_locku_done
,
4711 .rpc_release
= nfs4_locku_release_calldata
,
4714 static struct rpc_task
*nfs4_do_unlck(struct file_lock
*fl
,
4715 struct nfs_open_context
*ctx
,
4716 struct nfs4_lock_state
*lsp
,
4717 struct nfs_seqid
*seqid
)
4719 struct nfs4_unlockdata
*data
;
4720 struct rpc_message msg
= {
4721 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOCKU
],
4722 .rpc_cred
= ctx
->cred
,
4724 struct rpc_task_setup task_setup_data
= {
4725 .rpc_client
= NFS_CLIENT(lsp
->ls_state
->inode
),
4726 .rpc_message
= &msg
,
4727 .callback_ops
= &nfs4_locku_ops
,
4728 .workqueue
= nfsiod_workqueue
,
4729 .flags
= RPC_TASK_ASYNC
,
4732 /* Ensure this is an unlock - when canceling a lock, the
4733 * canceled lock is passed in, and it won't be an unlock.
4735 fl
->fl_type
= F_UNLCK
;
4737 data
= nfs4_alloc_unlockdata(fl
, ctx
, lsp
, seqid
);
4739 nfs_free_seqid(seqid
);
4740 return ERR_PTR(-ENOMEM
);
4743 nfs41_init_sequence(&data
->arg
.seq_args
, &data
->res
.seq_res
, 1);
4744 msg
.rpc_argp
= &data
->arg
;
4745 msg
.rpc_resp
= &data
->res
;
4746 task_setup_data
.callback_data
= data
;
4747 return rpc_run_task(&task_setup_data
);
4750 static int nfs4_proc_unlck(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
4752 struct inode
*inode
= state
->inode
;
4753 struct nfs4_state_owner
*sp
= state
->owner
;
4754 struct nfs_inode
*nfsi
= NFS_I(inode
);
4755 struct nfs_seqid
*seqid
;
4756 struct nfs4_lock_state
*lsp
;
4757 struct rpc_task
*task
;
4759 unsigned char fl_flags
= request
->fl_flags
;
4761 status
= nfs4_set_lock_state(state
, request
);
4762 /* Unlock _before_ we do the RPC call */
4763 request
->fl_flags
|= FL_EXISTS
;
4764 /* Exclude nfs_delegation_claim_locks() */
4765 mutex_lock(&sp
->so_delegreturn_mutex
);
4766 /* Exclude nfs4_reclaim_open_stateid() - note nesting! */
4767 down_read(&nfsi
->rwsem
);
4768 if (do_vfs_lock(request
->fl_file
, request
) == -ENOENT
) {
4769 up_read(&nfsi
->rwsem
);
4770 mutex_unlock(&sp
->so_delegreturn_mutex
);
4773 up_read(&nfsi
->rwsem
);
4774 mutex_unlock(&sp
->so_delegreturn_mutex
);
4777 /* Is this a delegated lock? */
4778 lsp
= request
->fl_u
.nfs4_fl
.owner
;
4779 if (test_bit(NFS_LOCK_INITIALIZED
, &lsp
->ls_flags
) == 0)
4781 seqid
= nfs_alloc_seqid(&lsp
->ls_seqid
, GFP_KERNEL
);
4785 task
= nfs4_do_unlck(request
, nfs_file_open_context(request
->fl_file
), lsp
, seqid
);
4786 status
= PTR_ERR(task
);
4789 status
= nfs4_wait_for_completion_rpc_task(task
);
4792 request
->fl_flags
= fl_flags
;
4796 struct nfs4_lockdata
{
4797 struct nfs_lock_args arg
;
4798 struct nfs_lock_res res
;
4799 struct nfs4_lock_state
*lsp
;
4800 struct nfs_open_context
*ctx
;
4801 struct file_lock fl
;
4802 unsigned long timestamp
;
4805 struct nfs_server
*server
;
4808 static struct nfs4_lockdata
*nfs4_alloc_lockdata(struct file_lock
*fl
,
4809 struct nfs_open_context
*ctx
, struct nfs4_lock_state
*lsp
,
4812 struct nfs4_lockdata
*p
;
4813 struct inode
*inode
= lsp
->ls_state
->inode
;
4814 struct nfs_server
*server
= NFS_SERVER(inode
);
4816 p
= kzalloc(sizeof(*p
), gfp_mask
);
4820 p
->arg
.fh
= NFS_FH(inode
);
4822 p
->arg
.open_seqid
= nfs_alloc_seqid(&lsp
->ls_state
->owner
->so_seqid
, gfp_mask
);
4823 if (p
->arg
.open_seqid
== NULL
)
4825 p
->arg
.lock_seqid
= nfs_alloc_seqid(&lsp
->ls_seqid
, gfp_mask
);
4826 if (p
->arg
.lock_seqid
== NULL
)
4827 goto out_free_seqid
;
4828 p
->arg
.lock_stateid
= &lsp
->ls_stateid
;
4829 p
->arg
.lock_owner
.clientid
= server
->nfs_client
->cl_clientid
;
4830 p
->arg
.lock_owner
.id
= lsp
->ls_seqid
.owner_id
;
4831 p
->arg
.lock_owner
.s_dev
= server
->s_dev
;
4832 p
->res
.lock_seqid
= p
->arg
.lock_seqid
;
4835 atomic_inc(&lsp
->ls_count
);
4836 p
->ctx
= get_nfs_open_context(ctx
);
4837 memcpy(&p
->fl
, fl
, sizeof(p
->fl
));
4840 nfs_free_seqid(p
->arg
.open_seqid
);
4846 static void nfs4_lock_prepare(struct rpc_task
*task
, void *calldata
)
4848 struct nfs4_lockdata
*data
= calldata
;
4849 struct nfs4_state
*state
= data
->lsp
->ls_state
;
4851 dprintk("%s: begin!\n", __func__
);
4852 if (nfs_wait_on_sequence(data
->arg
.lock_seqid
, task
) != 0)
4854 /* Do we need to do an open_to_lock_owner? */
4855 if (!(data
->arg
.lock_seqid
->sequence
->flags
& NFS_SEQID_CONFIRMED
)) {
4856 if (nfs_wait_on_sequence(data
->arg
.open_seqid
, task
) != 0) {
4857 goto out_release_lock_seqid
;
4859 data
->arg
.open_stateid
= &state
->open_stateid
;
4860 data
->arg
.new_lock_owner
= 1;
4861 data
->res
.open_seqid
= data
->arg
.open_seqid
;
4863 data
->arg
.new_lock_owner
= 0;
4864 if (!nfs4_valid_open_stateid(state
)) {
4865 data
->rpc_status
= -EBADF
;
4866 task
->tk_action
= NULL
;
4867 goto out_release_open_seqid
;
4869 data
->timestamp
= jiffies
;
4870 if (nfs4_setup_sequence(data
->server
,
4871 &data
->arg
.seq_args
,
4875 out_release_open_seqid
:
4876 nfs_release_seqid(data
->arg
.open_seqid
);
4877 out_release_lock_seqid
:
4878 nfs_release_seqid(data
->arg
.lock_seqid
);
4880 nfs4_sequence_done(task
, &data
->res
.seq_res
);
4881 dprintk("%s: done!, ret = %d\n", __func__
, data
->rpc_status
);
4884 static void nfs4_lock_done(struct rpc_task
*task
, void *calldata
)
4886 struct nfs4_lockdata
*data
= calldata
;
4888 dprintk("%s: begin!\n", __func__
);
4890 if (!nfs4_sequence_done(task
, &data
->res
.seq_res
))
4893 data
->rpc_status
= task
->tk_status
;
4894 if (data
->arg
.new_lock_owner
!= 0) {
4895 if (data
->rpc_status
== 0)
4896 nfs_confirm_seqid(&data
->lsp
->ls_seqid
, 0);
4900 if (data
->rpc_status
== 0) {
4901 nfs4_stateid_copy(&data
->lsp
->ls_stateid
, &data
->res
.stateid
);
4902 set_bit(NFS_LOCK_INITIALIZED
, &data
->lsp
->ls_flags
);
4903 renew_lease(NFS_SERVER(data
->ctx
->dentry
->d_inode
), data
->timestamp
);
4906 dprintk("%s: done, ret = %d!\n", __func__
, data
->rpc_status
);
4909 static void nfs4_lock_release(void *calldata
)
4911 struct nfs4_lockdata
*data
= calldata
;
4913 dprintk("%s: begin!\n", __func__
);
4914 nfs_free_seqid(data
->arg
.open_seqid
);
4915 if (data
->cancelled
!= 0) {
4916 struct rpc_task
*task
;
4917 task
= nfs4_do_unlck(&data
->fl
, data
->ctx
, data
->lsp
,
4918 data
->arg
.lock_seqid
);
4920 rpc_put_task_async(task
);
4921 dprintk("%s: cancelling lock!\n", __func__
);
4923 nfs_free_seqid(data
->arg
.lock_seqid
);
4924 nfs4_put_lock_state(data
->lsp
);
4925 put_nfs_open_context(data
->ctx
);
4927 dprintk("%s: done!\n", __func__
);
4930 static const struct rpc_call_ops nfs4_lock_ops
= {
4931 .rpc_call_prepare
= nfs4_lock_prepare
,
4932 .rpc_call_done
= nfs4_lock_done
,
4933 .rpc_release
= nfs4_lock_release
,
4936 static void nfs4_handle_setlk_error(struct nfs_server
*server
, struct nfs4_lock_state
*lsp
, int new_lock_owner
, int error
)
4939 case -NFS4ERR_ADMIN_REVOKED
:
4940 case -NFS4ERR_BAD_STATEID
:
4941 lsp
->ls_seqid
.flags
&= ~NFS_SEQID_CONFIRMED
;
4942 if (new_lock_owner
!= 0 ||
4943 test_bit(NFS_LOCK_INITIALIZED
, &lsp
->ls_flags
) != 0)
4944 nfs4_schedule_stateid_recovery(server
, lsp
->ls_state
);
4946 case -NFS4ERR_STALE_STATEID
:
4947 lsp
->ls_seqid
.flags
&= ~NFS_SEQID_CONFIRMED
;
4948 case -NFS4ERR_EXPIRED
:
4949 nfs4_schedule_lease_recovery(server
->nfs_client
);
4953 static int _nfs4_do_setlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*fl
, int recovery_type
)
4955 struct nfs4_lockdata
*data
;
4956 struct rpc_task
*task
;
4957 struct rpc_message msg
= {
4958 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOCK
],
4959 .rpc_cred
= state
->owner
->so_cred
,
4961 struct rpc_task_setup task_setup_data
= {
4962 .rpc_client
= NFS_CLIENT(state
->inode
),
4963 .rpc_message
= &msg
,
4964 .callback_ops
= &nfs4_lock_ops
,
4965 .workqueue
= nfsiod_workqueue
,
4966 .flags
= RPC_TASK_ASYNC
,
4970 dprintk("%s: begin!\n", __func__
);
4971 data
= nfs4_alloc_lockdata(fl
, nfs_file_open_context(fl
->fl_file
),
4972 fl
->fl_u
.nfs4_fl
.owner
,
4973 recovery_type
== NFS_LOCK_NEW
? GFP_KERNEL
: GFP_NOFS
);
4977 data
->arg
.block
= 1;
4978 nfs41_init_sequence(&data
->arg
.seq_args
, &data
->res
.seq_res
, 1);
4979 msg
.rpc_argp
= &data
->arg
;
4980 msg
.rpc_resp
= &data
->res
;
4981 task_setup_data
.callback_data
= data
;
4982 if (recovery_type
> NFS_LOCK_NEW
) {
4983 if (recovery_type
== NFS_LOCK_RECLAIM
)
4984 data
->arg
.reclaim
= NFS_LOCK_RECLAIM
;
4985 nfs4_set_sequence_privileged(&data
->arg
.seq_args
);
4987 task
= rpc_run_task(&task_setup_data
);
4989 return PTR_ERR(task
);
4990 ret
= nfs4_wait_for_completion_rpc_task(task
);
4992 ret
= data
->rpc_status
;
4994 nfs4_handle_setlk_error(data
->server
, data
->lsp
,
4995 data
->arg
.new_lock_owner
, ret
);
4997 data
->cancelled
= 1;
4999 dprintk("%s: done, ret = %d!\n", __func__
, ret
);
5003 static int nfs4_lock_reclaim(struct nfs4_state
*state
, struct file_lock
*request
)
5005 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
5006 struct nfs4_exception exception
= {
5007 .inode
= state
->inode
,
5012 /* Cache the lock if possible... */
5013 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) != 0)
5015 err
= _nfs4_do_setlk(state
, F_SETLK
, request
, NFS_LOCK_RECLAIM
);
5016 if (err
!= -NFS4ERR_DELAY
)
5018 nfs4_handle_exception(server
, err
, &exception
);
5019 } while (exception
.retry
);
5023 static int nfs4_lock_expired(struct nfs4_state
*state
, struct file_lock
*request
)
5025 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
5026 struct nfs4_exception exception
= {
5027 .inode
= state
->inode
,
5031 err
= nfs4_set_lock_state(state
, request
);
5035 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) != 0)
5037 err
= _nfs4_do_setlk(state
, F_SETLK
, request
, NFS_LOCK_EXPIRED
);
5041 case -NFS4ERR_GRACE
:
5042 case -NFS4ERR_DELAY
:
5043 nfs4_handle_exception(server
, err
, &exception
);
5046 } while (exception
.retry
);
5051 #if defined(CONFIG_NFS_V4_1)
5053 * nfs41_check_expired_locks - possibly free a lock stateid
5055 * @state: NFSv4 state for an inode
5057 * Returns NFS_OK if recovery for this stateid is now finished.
5058 * Otherwise a negative NFS4ERR value is returned.
5060 static int nfs41_check_expired_locks(struct nfs4_state
*state
)
5062 int status
, ret
= -NFS4ERR_BAD_STATEID
;
5063 struct nfs4_lock_state
*lsp
;
5064 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
5066 list_for_each_entry(lsp
, &state
->lock_states
, ls_locks
) {
5067 if (test_bit(NFS_LOCK_INITIALIZED
, &lsp
->ls_flags
)) {
5068 status
= nfs41_test_stateid(server
, &lsp
->ls_stateid
);
5069 if (status
!= NFS_OK
) {
5070 /* Free the stateid unless the server
5071 * informs us the stateid is unrecognized. */
5072 if (status
!= -NFS4ERR_BAD_STATEID
)
5073 nfs41_free_stateid(server
,
5075 clear_bit(NFS_LOCK_INITIALIZED
, &lsp
->ls_flags
);
5084 static int nfs41_lock_expired(struct nfs4_state
*state
, struct file_lock
*request
)
5086 int status
= NFS_OK
;
5088 if (test_bit(LK_STATE_IN_USE
, &state
->flags
))
5089 status
= nfs41_check_expired_locks(state
);
5090 if (status
!= NFS_OK
)
5091 status
= nfs4_lock_expired(state
, request
);
5096 static int _nfs4_proc_setlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
5098 struct nfs4_state_owner
*sp
= state
->owner
;
5099 struct nfs_inode
*nfsi
= NFS_I(state
->inode
);
5100 unsigned char fl_flags
= request
->fl_flags
;
5102 int status
= -ENOLCK
;
5104 if ((fl_flags
& FL_POSIX
) &&
5105 !test_bit(NFS_STATE_POSIX_LOCKS
, &state
->flags
))
5107 /* Is this a delegated open? */
5108 status
= nfs4_set_lock_state(state
, request
);
5111 request
->fl_flags
|= FL_ACCESS
;
5112 status
= do_vfs_lock(request
->fl_file
, request
);
5115 down_read(&nfsi
->rwsem
);
5116 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
)) {
5117 /* Yes: cache locks! */
5118 /* ...but avoid races with delegation recall... */
5119 request
->fl_flags
= fl_flags
& ~FL_SLEEP
;
5120 status
= do_vfs_lock(request
->fl_file
, request
);
5123 seq
= raw_seqcount_begin(&sp
->so_reclaim_seqcount
);
5124 up_read(&nfsi
->rwsem
);
5125 status
= _nfs4_do_setlk(state
, cmd
, request
, NFS_LOCK_NEW
);
5128 down_read(&nfsi
->rwsem
);
5129 if (read_seqcount_retry(&sp
->so_reclaim_seqcount
, seq
)) {
5130 status
= -NFS4ERR_DELAY
;
5133 /* Note: we always want to sleep here! */
5134 request
->fl_flags
= fl_flags
| FL_SLEEP
;
5135 if (do_vfs_lock(request
->fl_file
, request
) < 0)
5136 printk(KERN_WARNING
"NFS: %s: VFS is out of sync with lock "
5137 "manager!\n", __func__
);
5139 up_read(&nfsi
->rwsem
);
5141 request
->fl_flags
= fl_flags
;
5145 static int nfs4_proc_setlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
5147 struct nfs4_exception exception
= {
5149 .inode
= state
->inode
,
5154 err
= _nfs4_proc_setlk(state
, cmd
, request
);
5155 if (err
== -NFS4ERR_DENIED
)
5157 err
= nfs4_handle_exception(NFS_SERVER(state
->inode
),
5159 } while (exception
.retry
);
5164 nfs4_proc_lock(struct file
*filp
, int cmd
, struct file_lock
*request
)
5166 struct nfs_open_context
*ctx
;
5167 struct nfs4_state
*state
;
5168 unsigned long timeout
= NFS4_LOCK_MINTIMEOUT
;
5171 /* verify open state */
5172 ctx
= nfs_file_open_context(filp
);
5175 if (request
->fl_start
< 0 || request
->fl_end
< 0)
5178 if (IS_GETLK(cmd
)) {
5180 return nfs4_proc_getlk(state
, F_GETLK
, request
);
5184 if (!(IS_SETLK(cmd
) || IS_SETLKW(cmd
)))
5187 if (request
->fl_type
== F_UNLCK
) {
5189 return nfs4_proc_unlck(state
, cmd
, request
);
5196 * Don't rely on the VFS having checked the file open mode,
5197 * since it won't do this for flock() locks.
5199 switch (request
->fl_type
) {
5201 if (!(filp
->f_mode
& FMODE_READ
))
5205 if (!(filp
->f_mode
& FMODE_WRITE
))
5210 status
= nfs4_proc_setlk(state
, cmd
, request
);
5211 if ((status
!= -EAGAIN
) || IS_SETLK(cmd
))
5213 timeout
= nfs4_set_lock_task_retry(timeout
);
5214 status
= -ERESTARTSYS
;
5217 } while(status
< 0);
5221 int nfs4_lock_delegation_recall(struct file_lock
*fl
, struct nfs4_state
*state
, const nfs4_stateid
*stateid
)
5223 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
5226 err
= nfs4_set_lock_state(state
, fl
);
5229 err
= _nfs4_do_setlk(state
, F_SETLK
, fl
, NFS_LOCK_NEW
);
5230 return nfs4_handle_delegation_recall_error(server
, state
, stateid
, err
);
5233 struct nfs_release_lockowner_data
{
5234 struct nfs4_lock_state
*lsp
;
5235 struct nfs_server
*server
;
5236 struct nfs_release_lockowner_args args
;
5239 static void nfs4_release_lockowner_release(void *calldata
)
5241 struct nfs_release_lockowner_data
*data
= calldata
;
5242 nfs4_free_lock_state(data
->server
, data
->lsp
);
5246 static const struct rpc_call_ops nfs4_release_lockowner_ops
= {
5247 .rpc_release
= nfs4_release_lockowner_release
,
5250 static int nfs4_release_lockowner(struct nfs_server
*server
, struct nfs4_lock_state
*lsp
)
5252 struct nfs_release_lockowner_data
*data
;
5253 struct rpc_message msg
= {
5254 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RELEASE_LOCKOWNER
],
5257 if (server
->nfs_client
->cl_mvops
->minor_version
!= 0)
5259 data
= kmalloc(sizeof(*data
), GFP_NOFS
);
5263 data
->server
= server
;
5264 data
->args
.lock_owner
.clientid
= server
->nfs_client
->cl_clientid
;
5265 data
->args
.lock_owner
.id
= lsp
->ls_seqid
.owner_id
;
5266 data
->args
.lock_owner
.s_dev
= server
->s_dev
;
5267 msg
.rpc_argp
= &data
->args
;
5268 rpc_call_async(server
->client
, &msg
, 0, &nfs4_release_lockowner_ops
, data
);
5272 #define XATTR_NAME_NFSV4_ACL "system.nfs4_acl"
5274 static int nfs4_xattr_set_nfs4_acl(struct dentry
*dentry
, const char *key
,
5275 const void *buf
, size_t buflen
,
5276 int flags
, int type
)
5278 if (strcmp(key
, "") != 0)
5281 return nfs4_proc_set_acl(dentry
->d_inode
, buf
, buflen
);
5284 static int nfs4_xattr_get_nfs4_acl(struct dentry
*dentry
, const char *key
,
5285 void *buf
, size_t buflen
, int type
)
5287 if (strcmp(key
, "") != 0)
5290 return nfs4_proc_get_acl(dentry
->d_inode
, buf
, buflen
);
5293 static size_t nfs4_xattr_list_nfs4_acl(struct dentry
*dentry
, char *list
,
5294 size_t list_len
, const char *name
,
5295 size_t name_len
, int type
)
5297 size_t len
= sizeof(XATTR_NAME_NFSV4_ACL
);
5299 if (!nfs4_server_supports_acls(NFS_SERVER(dentry
->d_inode
)))
5302 if (list
&& len
<= list_len
)
5303 memcpy(list
, XATTR_NAME_NFSV4_ACL
, len
);
5308 * nfs_fhget will use either the mounted_on_fileid or the fileid
5310 static void nfs_fixup_referral_attributes(struct nfs_fattr
*fattr
)
5312 if (!(((fattr
->valid
& NFS_ATTR_FATTR_MOUNTED_ON_FILEID
) ||
5313 (fattr
->valid
& NFS_ATTR_FATTR_FILEID
)) &&
5314 (fattr
->valid
& NFS_ATTR_FATTR_FSID
) &&
5315 (fattr
->valid
& NFS_ATTR_FATTR_V4_LOCATIONS
)))
5318 fattr
->valid
|= NFS_ATTR_FATTR_TYPE
| NFS_ATTR_FATTR_MODE
|
5319 NFS_ATTR_FATTR_NLINK
| NFS_ATTR_FATTR_V4_REFERRAL
;
5320 fattr
->mode
= S_IFDIR
| S_IRUGO
| S_IXUGO
;
5324 static int _nfs4_proc_fs_locations(struct rpc_clnt
*client
, struct inode
*dir
,
5325 const struct qstr
*name
,
5326 struct nfs4_fs_locations
*fs_locations
,
5329 struct nfs_server
*server
= NFS_SERVER(dir
);
5331 [0] = FATTR4_WORD0_FSID
| FATTR4_WORD0_FS_LOCATIONS
,
5333 struct nfs4_fs_locations_arg args
= {
5334 .dir_fh
= NFS_FH(dir
),
5339 struct nfs4_fs_locations_res res
= {
5340 .fs_locations
= fs_locations
,
5342 struct rpc_message msg
= {
5343 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_FS_LOCATIONS
],
5349 dprintk("%s: start\n", __func__
);
5351 /* Ask for the fileid of the absent filesystem if mounted_on_fileid
5352 * is not supported */
5353 if (NFS_SERVER(dir
)->attr_bitmask
[1] & FATTR4_WORD1_MOUNTED_ON_FILEID
)
5354 bitmask
[1] |= FATTR4_WORD1_MOUNTED_ON_FILEID
;
5356 bitmask
[0] |= FATTR4_WORD0_FILEID
;
5358 nfs_fattr_init(&fs_locations
->fattr
);
5359 fs_locations
->server
= server
;
5360 fs_locations
->nlocations
= 0;
5361 status
= nfs4_call_sync(client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
5362 dprintk("%s: returned status = %d\n", __func__
, status
);
5366 int nfs4_proc_fs_locations(struct rpc_clnt
*client
, struct inode
*dir
,
5367 const struct qstr
*name
,
5368 struct nfs4_fs_locations
*fs_locations
,
5371 struct nfs4_exception exception
= { };
5374 err
= nfs4_handle_exception(NFS_SERVER(dir
),
5375 _nfs4_proc_fs_locations(client
, dir
, name
, fs_locations
, page
),
5377 } while (exception
.retry
);
5381 static int _nfs4_proc_secinfo(struct inode
*dir
, const struct qstr
*name
, struct nfs4_secinfo_flavors
*flavors
)
5384 struct nfs4_secinfo_arg args
= {
5385 .dir_fh
= NFS_FH(dir
),
5388 struct nfs4_secinfo_res res
= {
5391 struct rpc_message msg
= {
5392 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SECINFO
],
5397 dprintk("NFS call secinfo %s\n", name
->name
);
5398 status
= nfs4_call_sync(NFS_SERVER(dir
)->client
, NFS_SERVER(dir
), &msg
, &args
.seq_args
, &res
.seq_res
, 0);
5399 dprintk("NFS reply secinfo: %d\n", status
);
5403 int nfs4_proc_secinfo(struct inode
*dir
, const struct qstr
*name
,
5404 struct nfs4_secinfo_flavors
*flavors
)
5406 struct nfs4_exception exception
= { };
5409 err
= nfs4_handle_exception(NFS_SERVER(dir
),
5410 _nfs4_proc_secinfo(dir
, name
, flavors
),
5412 } while (exception
.retry
);
5416 #ifdef CONFIG_NFS_V4_1
5418 * Check the exchange flags returned by the server for invalid flags, having
5419 * both PNFS and NON_PNFS flags set, and not having one of NON_PNFS, PNFS, or
5422 static int nfs4_check_cl_exchange_flags(u32 flags
)
5424 if (flags
& ~EXCHGID4_FLAG_MASK_R
)
5426 if ((flags
& EXCHGID4_FLAG_USE_PNFS_MDS
) &&
5427 (flags
& EXCHGID4_FLAG_USE_NON_PNFS
))
5429 if (!(flags
& (EXCHGID4_FLAG_MASK_PNFS
)))
5433 return -NFS4ERR_INVAL
;
5437 nfs41_same_server_scope(struct nfs41_server_scope
*a
,
5438 struct nfs41_server_scope
*b
)
5440 if (a
->server_scope_sz
== b
->server_scope_sz
&&
5441 memcmp(a
->server_scope
, b
->server_scope
, a
->server_scope_sz
) == 0)
5448 * nfs4_proc_bind_conn_to_session()
5450 * The 4.1 client currently uses the same TCP connection for the
5451 * fore and backchannel.
5453 int nfs4_proc_bind_conn_to_session(struct nfs_client
*clp
, struct rpc_cred
*cred
)
5456 struct nfs41_bind_conn_to_session_res res
;
5457 struct rpc_message msg
= {
5459 &nfs4_procedures
[NFSPROC4_CLNT_BIND_CONN_TO_SESSION
],
5465 dprintk("--> %s\n", __func__
);
5467 res
.session
= kzalloc(sizeof(struct nfs4_session
), GFP_NOFS
);
5468 if (unlikely(res
.session
== NULL
)) {
5473 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
5475 if (memcmp(res
.session
->sess_id
.data
,
5476 clp
->cl_session
->sess_id
.data
, NFS4_MAX_SESSIONID_LEN
)) {
5477 dprintk("NFS: %s: Session ID mismatch\n", __func__
);
5481 if (res
.dir
!= NFS4_CDFS4_BOTH
) {
5482 dprintk("NFS: %s: Unexpected direction from server\n",
5487 if (res
.use_conn_in_rdma_mode
) {
5488 dprintk("NFS: %s: Server returned RDMA mode = true\n",
5497 dprintk("<-- %s status= %d\n", __func__
, status
);
5502 * nfs4_proc_exchange_id()
5504 * Returns zero, a negative errno, or a negative NFS4ERR status code.
5506 * Since the clientid has expired, all compounds using sessions
5507 * associated with the stale clientid will be returning
5508 * NFS4ERR_BADSESSION in the sequence operation, and will therefore
5509 * be in some phase of session reset.
5511 int nfs4_proc_exchange_id(struct nfs_client
*clp
, struct rpc_cred
*cred
)
5513 nfs4_verifier verifier
;
5514 struct nfs41_exchange_id_args args
= {
5515 .verifier
= &verifier
,
5517 .flags
= EXCHGID4_FLAG_SUPP_MOVED_REFER
,
5519 struct nfs41_exchange_id_res res
= {
5523 struct rpc_message msg
= {
5524 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_EXCHANGE_ID
],
5530 nfs4_init_boot_verifier(clp
, &verifier
);
5531 args
.id_len
= nfs4_init_uniform_client_string(clp
, args
.id
,
5533 dprintk("NFS call exchange_id auth=%s, '%.*s'\n",
5534 clp
->cl_rpcclient
->cl_auth
->au_ops
->au_name
,
5535 args
.id_len
, args
.id
);
5537 res
.server_owner
= kzalloc(sizeof(struct nfs41_server_owner
),
5539 if (unlikely(res
.server_owner
== NULL
)) {
5544 res
.server_scope
= kzalloc(sizeof(struct nfs41_server_scope
),
5546 if (unlikely(res
.server_scope
== NULL
)) {
5548 goto out_server_owner
;
5551 res
.impl_id
= kzalloc(sizeof(struct nfs41_impl_id
), GFP_NOFS
);
5552 if (unlikely(res
.impl_id
== NULL
)) {
5554 goto out_server_scope
;
5557 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
5559 status
= nfs4_check_cl_exchange_flags(res
.flags
);
5562 clp
->cl_clientid
= res
.clientid
;
5563 clp
->cl_exchange_flags
= (res
.flags
& ~EXCHGID4_FLAG_CONFIRMED_R
);
5564 if (!(res
.flags
& EXCHGID4_FLAG_CONFIRMED_R
))
5565 clp
->cl_seqid
= res
.seqid
;
5567 kfree(clp
->cl_serverowner
);
5568 clp
->cl_serverowner
= res
.server_owner
;
5569 res
.server_owner
= NULL
;
5571 /* use the most recent implementation id */
5572 kfree(clp
->cl_implid
);
5573 clp
->cl_implid
= res
.impl_id
;
5575 if (clp
->cl_serverscope
!= NULL
&&
5576 !nfs41_same_server_scope(clp
->cl_serverscope
,
5577 res
.server_scope
)) {
5578 dprintk("%s: server_scope mismatch detected\n",
5580 set_bit(NFS4CLNT_SERVER_SCOPE_MISMATCH
, &clp
->cl_state
);
5581 kfree(clp
->cl_serverscope
);
5582 clp
->cl_serverscope
= NULL
;
5585 if (clp
->cl_serverscope
== NULL
) {
5586 clp
->cl_serverscope
= res
.server_scope
;
5593 kfree(res
.server_owner
);
5595 kfree(res
.server_scope
);
5597 if (clp
->cl_implid
!= NULL
)
5598 dprintk("NFS reply exchange_id: Server Implementation ID: "
5599 "domain: %s, name: %s, date: %llu,%u\n",
5600 clp
->cl_implid
->domain
, clp
->cl_implid
->name
,
5601 clp
->cl_implid
->date
.seconds
,
5602 clp
->cl_implid
->date
.nseconds
);
5603 dprintk("NFS reply exchange_id: %d\n", status
);
5607 static int _nfs4_proc_destroy_clientid(struct nfs_client
*clp
,
5608 struct rpc_cred
*cred
)
5610 struct rpc_message msg
= {
5611 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_DESTROY_CLIENTID
],
5617 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
5619 dprintk("NFS: Got error %d from the server %s on "
5620 "DESTROY_CLIENTID.", status
, clp
->cl_hostname
);
5624 static int nfs4_proc_destroy_clientid(struct nfs_client
*clp
,
5625 struct rpc_cred
*cred
)
5630 for (loop
= NFS4_MAX_LOOP_ON_RECOVER
; loop
!= 0; loop
--) {
5631 ret
= _nfs4_proc_destroy_clientid(clp
, cred
);
5633 case -NFS4ERR_DELAY
:
5634 case -NFS4ERR_CLIENTID_BUSY
:
5644 int nfs4_destroy_clientid(struct nfs_client
*clp
)
5646 struct rpc_cred
*cred
;
5649 if (clp
->cl_mvops
->minor_version
< 1)
5651 if (clp
->cl_exchange_flags
== 0)
5653 if (clp
->cl_preserve_clid
)
5655 cred
= nfs4_get_exchange_id_cred(clp
);
5656 ret
= nfs4_proc_destroy_clientid(clp
, cred
);
5661 case -NFS4ERR_STALE_CLIENTID
:
5662 clp
->cl_exchange_flags
= 0;
5668 struct nfs4_get_lease_time_data
{
5669 struct nfs4_get_lease_time_args
*args
;
5670 struct nfs4_get_lease_time_res
*res
;
5671 struct nfs_client
*clp
;
5674 static void nfs4_get_lease_time_prepare(struct rpc_task
*task
,
5677 struct nfs4_get_lease_time_data
*data
=
5678 (struct nfs4_get_lease_time_data
*)calldata
;
5680 dprintk("--> %s\n", __func__
);
5681 /* just setup sequence, do not trigger session recovery
5682 since we're invoked within one */
5683 nfs41_setup_sequence(data
->clp
->cl_session
,
5684 &data
->args
->la_seq_args
,
5685 &data
->res
->lr_seq_res
,
5687 dprintk("<-- %s\n", __func__
);
5691 * Called from nfs4_state_manager thread for session setup, so don't recover
5692 * from sequence operation or clientid errors.
5694 static void nfs4_get_lease_time_done(struct rpc_task
*task
, void *calldata
)
5696 struct nfs4_get_lease_time_data
*data
=
5697 (struct nfs4_get_lease_time_data
*)calldata
;
5699 dprintk("--> %s\n", __func__
);
5700 if (!nfs41_sequence_done(task
, &data
->res
->lr_seq_res
))
5702 switch (task
->tk_status
) {
5703 case -NFS4ERR_DELAY
:
5704 case -NFS4ERR_GRACE
:
5705 dprintk("%s Retry: tk_status %d\n", __func__
, task
->tk_status
);
5706 rpc_delay(task
, NFS4_POLL_RETRY_MIN
);
5707 task
->tk_status
= 0;
5709 case -NFS4ERR_RETRY_UNCACHED_REP
:
5710 rpc_restart_call_prepare(task
);
5713 dprintk("<-- %s\n", __func__
);
5716 static const struct rpc_call_ops nfs4_get_lease_time_ops
= {
5717 .rpc_call_prepare
= nfs4_get_lease_time_prepare
,
5718 .rpc_call_done
= nfs4_get_lease_time_done
,
5721 int nfs4_proc_get_lease_time(struct nfs_client
*clp
, struct nfs_fsinfo
*fsinfo
)
5723 struct rpc_task
*task
;
5724 struct nfs4_get_lease_time_args args
;
5725 struct nfs4_get_lease_time_res res
= {
5726 .lr_fsinfo
= fsinfo
,
5728 struct nfs4_get_lease_time_data data
= {
5733 struct rpc_message msg
= {
5734 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GET_LEASE_TIME
],
5738 struct rpc_task_setup task_setup
= {
5739 .rpc_client
= clp
->cl_rpcclient
,
5740 .rpc_message
= &msg
,
5741 .callback_ops
= &nfs4_get_lease_time_ops
,
5742 .callback_data
= &data
,
5743 .flags
= RPC_TASK_TIMEOUT
,
5747 nfs41_init_sequence(&args
.la_seq_args
, &res
.lr_seq_res
, 0);
5748 nfs4_set_sequence_privileged(&args
.la_seq_args
);
5749 dprintk("--> %s\n", __func__
);
5750 task
= rpc_run_task(&task_setup
);
5753 status
= PTR_ERR(task
);
5755 status
= task
->tk_status
;
5758 dprintk("<-- %s return %d\n", __func__
, status
);
5764 * Initialize the values to be used by the client in CREATE_SESSION
5765 * If nfs4_init_session set the fore channel request and response sizes,
5768 * Set the back channel max_resp_sz_cached to zero to force the client to
5769 * always set csa_cachethis to FALSE because the current implementation
5770 * of the back channel DRC only supports caching the CB_SEQUENCE operation.
5772 static void nfs4_init_channel_attrs(struct nfs41_create_session_args
*args
)
5774 struct nfs4_session
*session
= args
->client
->cl_session
;
5775 unsigned int mxrqst_sz
= session
->fc_target_max_rqst_sz
,
5776 mxresp_sz
= session
->fc_target_max_resp_sz
;
5779 mxrqst_sz
= NFS_MAX_FILE_IO_SIZE
;
5781 mxresp_sz
= NFS_MAX_FILE_IO_SIZE
;
5782 /* Fore channel attributes */
5783 args
->fc_attrs
.max_rqst_sz
= mxrqst_sz
;
5784 args
->fc_attrs
.max_resp_sz
= mxresp_sz
;
5785 args
->fc_attrs
.max_ops
= NFS4_MAX_OPS
;
5786 args
->fc_attrs
.max_reqs
= max_session_slots
;
5788 dprintk("%s: Fore Channel : max_rqst_sz=%u max_resp_sz=%u "
5789 "max_ops=%u max_reqs=%u\n",
5791 args
->fc_attrs
.max_rqst_sz
, args
->fc_attrs
.max_resp_sz
,
5792 args
->fc_attrs
.max_ops
, args
->fc_attrs
.max_reqs
);
5794 /* Back channel attributes */
5795 args
->bc_attrs
.max_rqst_sz
= PAGE_SIZE
;
5796 args
->bc_attrs
.max_resp_sz
= PAGE_SIZE
;
5797 args
->bc_attrs
.max_resp_sz_cached
= 0;
5798 args
->bc_attrs
.max_ops
= NFS4_MAX_BACK_CHANNEL_OPS
;
5799 args
->bc_attrs
.max_reqs
= 1;
5801 dprintk("%s: Back Channel : max_rqst_sz=%u max_resp_sz=%u "
5802 "max_resp_sz_cached=%u max_ops=%u max_reqs=%u\n",
5804 args
->bc_attrs
.max_rqst_sz
, args
->bc_attrs
.max_resp_sz
,
5805 args
->bc_attrs
.max_resp_sz_cached
, args
->bc_attrs
.max_ops
,
5806 args
->bc_attrs
.max_reqs
);
5809 static int nfs4_verify_fore_channel_attrs(struct nfs41_create_session_args
*args
, struct nfs4_session
*session
)
5811 struct nfs4_channel_attrs
*sent
= &args
->fc_attrs
;
5812 struct nfs4_channel_attrs
*rcvd
= &session
->fc_attrs
;
5814 if (rcvd
->max_resp_sz
> sent
->max_resp_sz
)
5817 * Our requested max_ops is the minimum we need; we're not
5818 * prepared to break up compounds into smaller pieces than that.
5819 * So, no point even trying to continue if the server won't
5822 if (rcvd
->max_ops
< sent
->max_ops
)
5824 if (rcvd
->max_reqs
== 0)
5826 if (rcvd
->max_reqs
> NFS4_MAX_SLOT_TABLE
)
5827 rcvd
->max_reqs
= NFS4_MAX_SLOT_TABLE
;
5831 static int nfs4_verify_back_channel_attrs(struct nfs41_create_session_args
*args
, struct nfs4_session
*session
)
5833 struct nfs4_channel_attrs
*sent
= &args
->bc_attrs
;
5834 struct nfs4_channel_attrs
*rcvd
= &session
->bc_attrs
;
5836 if (rcvd
->max_rqst_sz
> sent
->max_rqst_sz
)
5838 if (rcvd
->max_resp_sz
< sent
->max_resp_sz
)
5840 if (rcvd
->max_resp_sz_cached
> sent
->max_resp_sz_cached
)
5842 /* These would render the backchannel useless: */
5843 if (rcvd
->max_ops
!= sent
->max_ops
)
5845 if (rcvd
->max_reqs
!= sent
->max_reqs
)
5850 static int nfs4_verify_channel_attrs(struct nfs41_create_session_args
*args
,
5851 struct nfs4_session
*session
)
5855 ret
= nfs4_verify_fore_channel_attrs(args
, session
);
5858 return nfs4_verify_back_channel_attrs(args
, session
);
5861 static int _nfs4_proc_create_session(struct nfs_client
*clp
,
5862 struct rpc_cred
*cred
)
5864 struct nfs4_session
*session
= clp
->cl_session
;
5865 struct nfs41_create_session_args args
= {
5867 .cb_program
= NFS4_CALLBACK
,
5869 struct nfs41_create_session_res res
= {
5872 struct rpc_message msg
= {
5873 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_CREATE_SESSION
],
5880 nfs4_init_channel_attrs(&args
);
5881 args
.flags
= (SESSION4_PERSIST
| SESSION4_BACK_CHAN
);
5883 status
= rpc_call_sync(session
->clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
5886 /* Verify the session's negotiated channel_attrs values */
5887 status
= nfs4_verify_channel_attrs(&args
, session
);
5888 /* Increment the clientid slot sequence id */
5896 * Issues a CREATE_SESSION operation to the server.
5897 * It is the responsibility of the caller to verify the session is
5898 * expired before calling this routine.
5900 int nfs4_proc_create_session(struct nfs_client
*clp
, struct rpc_cred
*cred
)
5904 struct nfs4_session
*session
= clp
->cl_session
;
5906 dprintk("--> %s clp=%p session=%p\n", __func__
, clp
, session
);
5908 status
= _nfs4_proc_create_session(clp
, cred
);
5912 /* Init or reset the session slot tables */
5913 status
= nfs4_setup_session_slot_tables(session
);
5914 dprintk("slot table setup returned %d\n", status
);
5918 ptr
= (unsigned *)&session
->sess_id
.data
[0];
5919 dprintk("%s client>seqid %d sessionid %u:%u:%u:%u\n", __func__
,
5920 clp
->cl_seqid
, ptr
[0], ptr
[1], ptr
[2], ptr
[3]);
5922 dprintk("<-- %s\n", __func__
);
5927 * Issue the over-the-wire RPC DESTROY_SESSION.
5928 * The caller must serialize access to this routine.
5930 int nfs4_proc_destroy_session(struct nfs4_session
*session
,
5931 struct rpc_cred
*cred
)
5933 struct rpc_message msg
= {
5934 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_DESTROY_SESSION
],
5935 .rpc_argp
= session
,
5940 dprintk("--> nfs4_proc_destroy_session\n");
5942 /* session is still being setup */
5943 if (session
->clp
->cl_cons_state
!= NFS_CS_READY
)
5946 status
= rpc_call_sync(session
->clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
5949 dprintk("NFS: Got error %d from the server on DESTROY_SESSION. "
5950 "Session has been destroyed regardless...\n", status
);
5952 dprintk("<-- nfs4_proc_destroy_session\n");
5957 * Renew the cl_session lease.
5959 struct nfs4_sequence_data
{
5960 struct nfs_client
*clp
;
5961 struct nfs4_sequence_args args
;
5962 struct nfs4_sequence_res res
;
5965 static void nfs41_sequence_release(void *data
)
5967 struct nfs4_sequence_data
*calldata
= data
;
5968 struct nfs_client
*clp
= calldata
->clp
;
5970 if (atomic_read(&clp
->cl_count
) > 1)
5971 nfs4_schedule_state_renewal(clp
);
5972 nfs_put_client(clp
);
5976 static int nfs41_sequence_handle_errors(struct rpc_task
*task
, struct nfs_client
*clp
)
5978 switch(task
->tk_status
) {
5979 case -NFS4ERR_DELAY
:
5980 rpc_delay(task
, NFS4_POLL_RETRY_MAX
);
5983 nfs4_schedule_lease_recovery(clp
);
5988 static void nfs41_sequence_call_done(struct rpc_task
*task
, void *data
)
5990 struct nfs4_sequence_data
*calldata
= data
;
5991 struct nfs_client
*clp
= calldata
->clp
;
5993 if (!nfs41_sequence_done(task
, task
->tk_msg
.rpc_resp
))
5996 if (task
->tk_status
< 0) {
5997 dprintk("%s ERROR %d\n", __func__
, task
->tk_status
);
5998 if (atomic_read(&clp
->cl_count
) == 1)
6001 if (nfs41_sequence_handle_errors(task
, clp
) == -EAGAIN
) {
6002 rpc_restart_call_prepare(task
);
6006 dprintk("%s rpc_cred %p\n", __func__
, task
->tk_msg
.rpc_cred
);
6008 dprintk("<-- %s\n", __func__
);
6011 static void nfs41_sequence_prepare(struct rpc_task
*task
, void *data
)
6013 struct nfs4_sequence_data
*calldata
= data
;
6014 struct nfs_client
*clp
= calldata
->clp
;
6015 struct nfs4_sequence_args
*args
;
6016 struct nfs4_sequence_res
*res
;
6018 args
= task
->tk_msg
.rpc_argp
;
6019 res
= task
->tk_msg
.rpc_resp
;
6021 nfs41_setup_sequence(clp
->cl_session
, args
, res
, task
);
6024 static const struct rpc_call_ops nfs41_sequence_ops
= {
6025 .rpc_call_done
= nfs41_sequence_call_done
,
6026 .rpc_call_prepare
= nfs41_sequence_prepare
,
6027 .rpc_release
= nfs41_sequence_release
,
6030 static struct rpc_task
*_nfs41_proc_sequence(struct nfs_client
*clp
,
6031 struct rpc_cred
*cred
,
6034 struct nfs4_sequence_data
*calldata
;
6035 struct rpc_message msg
= {
6036 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SEQUENCE
],
6039 struct rpc_task_setup task_setup_data
= {
6040 .rpc_client
= clp
->cl_rpcclient
,
6041 .rpc_message
= &msg
,
6042 .callback_ops
= &nfs41_sequence_ops
,
6043 .flags
= RPC_TASK_ASYNC
| RPC_TASK_TIMEOUT
,
6046 if (!atomic_inc_not_zero(&clp
->cl_count
))
6047 return ERR_PTR(-EIO
);
6048 calldata
= kzalloc(sizeof(*calldata
), GFP_NOFS
);
6049 if (calldata
== NULL
) {
6050 nfs_put_client(clp
);
6051 return ERR_PTR(-ENOMEM
);
6053 nfs41_init_sequence(&calldata
->args
, &calldata
->res
, 0);
6055 nfs4_set_sequence_privileged(&calldata
->args
);
6056 msg
.rpc_argp
= &calldata
->args
;
6057 msg
.rpc_resp
= &calldata
->res
;
6058 calldata
->clp
= clp
;
6059 task_setup_data
.callback_data
= calldata
;
6061 return rpc_run_task(&task_setup_data
);
6064 static int nfs41_proc_async_sequence(struct nfs_client
*clp
, struct rpc_cred
*cred
, unsigned renew_flags
)
6066 struct rpc_task
*task
;
6069 if ((renew_flags
& NFS4_RENEW_TIMEOUT
) == 0)
6071 task
= _nfs41_proc_sequence(clp
, cred
, false);
6073 ret
= PTR_ERR(task
);
6075 rpc_put_task_async(task
);
6076 dprintk("<-- %s status=%d\n", __func__
, ret
);
6080 static int nfs4_proc_sequence(struct nfs_client
*clp
, struct rpc_cred
*cred
)
6082 struct rpc_task
*task
;
6085 task
= _nfs41_proc_sequence(clp
, cred
, true);
6087 ret
= PTR_ERR(task
);
6090 ret
= rpc_wait_for_completion_task(task
);
6092 struct nfs4_sequence_res
*res
= task
->tk_msg
.rpc_resp
;
6094 if (task
->tk_status
== 0)
6095 nfs41_handle_sequence_flag_errors(clp
, res
->sr_status_flags
);
6096 ret
= task
->tk_status
;
6100 dprintk("<-- %s status=%d\n", __func__
, ret
);
6104 struct nfs4_reclaim_complete_data
{
6105 struct nfs_client
*clp
;
6106 struct nfs41_reclaim_complete_args arg
;
6107 struct nfs41_reclaim_complete_res res
;
6110 static void nfs4_reclaim_complete_prepare(struct rpc_task
*task
, void *data
)
6112 struct nfs4_reclaim_complete_data
*calldata
= data
;
6114 nfs41_setup_sequence(calldata
->clp
->cl_session
,
6115 &calldata
->arg
.seq_args
,
6116 &calldata
->res
.seq_res
,
6120 static int nfs41_reclaim_complete_handle_errors(struct rpc_task
*task
, struct nfs_client
*clp
)
6122 switch(task
->tk_status
) {
6124 case -NFS4ERR_COMPLETE_ALREADY
:
6125 case -NFS4ERR_WRONG_CRED
: /* What to do here? */
6127 case -NFS4ERR_DELAY
:
6128 rpc_delay(task
, NFS4_POLL_RETRY_MAX
);
6130 case -NFS4ERR_RETRY_UNCACHED_REP
:
6133 nfs4_schedule_lease_recovery(clp
);
6138 static void nfs4_reclaim_complete_done(struct rpc_task
*task
, void *data
)
6140 struct nfs4_reclaim_complete_data
*calldata
= data
;
6141 struct nfs_client
*clp
= calldata
->clp
;
6142 struct nfs4_sequence_res
*res
= &calldata
->res
.seq_res
;
6144 dprintk("--> %s\n", __func__
);
6145 if (!nfs41_sequence_done(task
, res
))
6148 if (nfs41_reclaim_complete_handle_errors(task
, clp
) == -EAGAIN
) {
6149 rpc_restart_call_prepare(task
);
6152 dprintk("<-- %s\n", __func__
);
6155 static void nfs4_free_reclaim_complete_data(void *data
)
6157 struct nfs4_reclaim_complete_data
*calldata
= data
;
6162 static const struct rpc_call_ops nfs4_reclaim_complete_call_ops
= {
6163 .rpc_call_prepare
= nfs4_reclaim_complete_prepare
,
6164 .rpc_call_done
= nfs4_reclaim_complete_done
,
6165 .rpc_release
= nfs4_free_reclaim_complete_data
,
6169 * Issue a global reclaim complete.
6171 static int nfs41_proc_reclaim_complete(struct nfs_client
*clp
)
6173 struct nfs4_reclaim_complete_data
*calldata
;
6174 struct rpc_task
*task
;
6175 struct rpc_message msg
= {
6176 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RECLAIM_COMPLETE
],
6178 struct rpc_task_setup task_setup_data
= {
6179 .rpc_client
= clp
->cl_rpcclient
,
6180 .rpc_message
= &msg
,
6181 .callback_ops
= &nfs4_reclaim_complete_call_ops
,
6182 .flags
= RPC_TASK_ASYNC
,
6184 int status
= -ENOMEM
;
6186 dprintk("--> %s\n", __func__
);
6187 calldata
= kzalloc(sizeof(*calldata
), GFP_NOFS
);
6188 if (calldata
== NULL
)
6190 calldata
->clp
= clp
;
6191 calldata
->arg
.one_fs
= 0;
6193 nfs41_init_sequence(&calldata
->arg
.seq_args
, &calldata
->res
.seq_res
, 0);
6194 nfs4_set_sequence_privileged(&calldata
->arg
.seq_args
);
6195 msg
.rpc_argp
= &calldata
->arg
;
6196 msg
.rpc_resp
= &calldata
->res
;
6197 task_setup_data
.callback_data
= calldata
;
6198 task
= rpc_run_task(&task_setup_data
);
6200 status
= PTR_ERR(task
);
6203 status
= nfs4_wait_for_completion_rpc_task(task
);
6205 status
= task
->tk_status
;
6209 dprintk("<-- %s status=%d\n", __func__
, status
);
6214 nfs4_layoutget_prepare(struct rpc_task
*task
, void *calldata
)
6216 struct nfs4_layoutget
*lgp
= calldata
;
6217 struct nfs_server
*server
= NFS_SERVER(lgp
->args
.inode
);
6218 struct nfs4_session
*session
= nfs4_get_session(server
);
6220 dprintk("--> %s\n", __func__
);
6221 /* Note the is a race here, where a CB_LAYOUTRECALL can come in
6222 * right now covering the LAYOUTGET we are about to send.
6223 * However, that is not so catastrophic, and there seems
6224 * to be no way to prevent it completely.
6226 if (nfs41_setup_sequence(session
, &lgp
->args
.seq_args
,
6227 &lgp
->res
.seq_res
, task
))
6229 if (pnfs_choose_layoutget_stateid(&lgp
->args
.stateid
,
6230 NFS_I(lgp
->args
.inode
)->layout
,
6231 lgp
->args
.ctx
->state
)) {
6232 rpc_exit(task
, NFS4_OK
);
6236 static void nfs4_layoutget_done(struct rpc_task
*task
, void *calldata
)
6238 struct nfs4_layoutget
*lgp
= calldata
;
6239 struct inode
*inode
= lgp
->args
.inode
;
6240 struct nfs_server
*server
= NFS_SERVER(inode
);
6241 struct pnfs_layout_hdr
*lo
;
6242 struct nfs4_state
*state
= NULL
;
6243 unsigned long timeo
, now
, giveup
;
6245 dprintk("--> %s tk_status => %d\n", __func__
, -task
->tk_status
);
6247 if (!nfs41_sequence_done(task
, &lgp
->res
.seq_res
))
6250 switch (task
->tk_status
) {
6254 * NFS4ERR_LAYOUTTRYLATER is a conflict with another client
6255 * (or clients) writing to the same RAID stripe
6257 case -NFS4ERR_LAYOUTTRYLATER
:
6259 * NFS4ERR_RECALLCONFLICT is when conflict with self (must recall
6260 * existing layout before getting a new one).
6262 case -NFS4ERR_RECALLCONFLICT
:
6263 timeo
= rpc_get_timeout(task
->tk_client
);
6264 giveup
= lgp
->args
.timestamp
+ timeo
;
6266 if (time_after(giveup
, now
)) {
6267 unsigned long delay
;
6270 * - Not less then NFS4_POLL_RETRY_MIN.
6271 * - One last time a jiffie before we give up
6272 * - exponential backoff (time_now minus start_attempt)
6274 delay
= max_t(unsigned long, NFS4_POLL_RETRY_MIN
,
6275 min((giveup
- now
- 1),
6276 now
- lgp
->args
.timestamp
));
6278 dprintk("%s: NFS4ERR_RECALLCONFLICT waiting %lu\n",
6280 rpc_delay(task
, delay
);
6281 task
->tk_status
= 0;
6282 rpc_restart_call_prepare(task
);
6283 goto out
; /* Do not call nfs4_async_handle_error() */
6286 case -NFS4ERR_EXPIRED
:
6287 case -NFS4ERR_BAD_STATEID
:
6288 spin_lock(&inode
->i_lock
);
6289 lo
= NFS_I(inode
)->layout
;
6290 if (!lo
|| list_empty(&lo
->plh_segs
)) {
6291 spin_unlock(&inode
->i_lock
);
6292 /* If the open stateid was bad, then recover it. */
6293 state
= lgp
->args
.ctx
->state
;
6297 pnfs_mark_matching_lsegs_invalid(lo
, &head
, NULL
);
6298 spin_unlock(&inode
->i_lock
);
6299 /* Mark the bad layout state as invalid, then
6300 * retry using the open stateid. */
6301 pnfs_free_lseg_list(&head
);
6304 if (nfs4_async_handle_error(task
, server
, state
) == -EAGAIN
)
6305 rpc_restart_call_prepare(task
);
6307 dprintk("<-- %s\n", __func__
);
6310 static size_t max_response_pages(struct nfs_server
*server
)
6312 u32 max_resp_sz
= server
->nfs_client
->cl_session
->fc_attrs
.max_resp_sz
;
6313 return nfs_page_array_len(0, max_resp_sz
);
6316 static void nfs4_free_pages(struct page
**pages
, size_t size
)
6323 for (i
= 0; i
< size
; i
++) {
6326 __free_page(pages
[i
]);
6331 static struct page
**nfs4_alloc_pages(size_t size
, gfp_t gfp_flags
)
6333 struct page
**pages
;
6336 pages
= kcalloc(size
, sizeof(struct page
*), gfp_flags
);
6338 dprintk("%s: can't alloc array of %zu pages\n", __func__
, size
);
6342 for (i
= 0; i
< size
; i
++) {
6343 pages
[i
] = alloc_page(gfp_flags
);
6345 dprintk("%s: failed to allocate page\n", __func__
);
6346 nfs4_free_pages(pages
, size
);
6354 static void nfs4_layoutget_release(void *calldata
)
6356 struct nfs4_layoutget
*lgp
= calldata
;
6357 struct inode
*inode
= lgp
->args
.inode
;
6358 struct nfs_server
*server
= NFS_SERVER(inode
);
6359 size_t max_pages
= max_response_pages(server
);
6361 dprintk("--> %s\n", __func__
);
6362 nfs4_free_pages(lgp
->args
.layout
.pages
, max_pages
);
6363 pnfs_put_layout_hdr(NFS_I(inode
)->layout
);
6364 put_nfs_open_context(lgp
->args
.ctx
);
6366 dprintk("<-- %s\n", __func__
);
6369 static const struct rpc_call_ops nfs4_layoutget_call_ops
= {
6370 .rpc_call_prepare
= nfs4_layoutget_prepare
,
6371 .rpc_call_done
= nfs4_layoutget_done
,
6372 .rpc_release
= nfs4_layoutget_release
,
6375 struct pnfs_layout_segment
*
6376 nfs4_proc_layoutget(struct nfs4_layoutget
*lgp
, gfp_t gfp_flags
)
6378 struct inode
*inode
= lgp
->args
.inode
;
6379 struct nfs_server
*server
= NFS_SERVER(inode
);
6380 size_t max_pages
= max_response_pages(server
);
6381 struct rpc_task
*task
;
6382 struct rpc_message msg
= {
6383 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LAYOUTGET
],
6384 .rpc_argp
= &lgp
->args
,
6385 .rpc_resp
= &lgp
->res
,
6387 struct rpc_task_setup task_setup_data
= {
6388 .rpc_client
= server
->client
,
6389 .rpc_message
= &msg
,
6390 .callback_ops
= &nfs4_layoutget_call_ops
,
6391 .callback_data
= lgp
,
6392 .flags
= RPC_TASK_ASYNC
,
6394 struct pnfs_layout_segment
*lseg
= NULL
;
6397 dprintk("--> %s\n", __func__
);
6399 lgp
->args
.layout
.pages
= nfs4_alloc_pages(max_pages
, gfp_flags
);
6400 if (!lgp
->args
.layout
.pages
) {
6401 nfs4_layoutget_release(lgp
);
6402 return ERR_PTR(-ENOMEM
);
6404 lgp
->args
.layout
.pglen
= max_pages
* PAGE_SIZE
;
6405 lgp
->args
.timestamp
= jiffies
;
6407 lgp
->res
.layoutp
= &lgp
->args
.layout
;
6408 lgp
->res
.seq_res
.sr_slot
= NULL
;
6409 nfs41_init_sequence(&lgp
->args
.seq_args
, &lgp
->res
.seq_res
, 0);
6411 /* nfs4_layoutget_release calls pnfs_put_layout_hdr */
6412 pnfs_get_layout_hdr(NFS_I(inode
)->layout
);
6414 task
= rpc_run_task(&task_setup_data
);
6416 return ERR_CAST(task
);
6417 status
= nfs4_wait_for_completion_rpc_task(task
);
6419 status
= task
->tk_status
;
6420 /* if layoutp->len is 0, nfs4_layoutget_prepare called rpc_exit */
6421 if (status
== 0 && lgp
->res
.layoutp
->len
)
6422 lseg
= pnfs_layout_process(lgp
);
6424 dprintk("<-- %s status=%d\n", __func__
, status
);
6426 return ERR_PTR(status
);
6431 nfs4_layoutreturn_prepare(struct rpc_task
*task
, void *calldata
)
6433 struct nfs4_layoutreturn
*lrp
= calldata
;
6435 dprintk("--> %s\n", __func__
);
6436 nfs41_setup_sequence(lrp
->clp
->cl_session
,
6437 &lrp
->args
.seq_args
,
6442 static void nfs4_layoutreturn_done(struct rpc_task
*task
, void *calldata
)
6444 struct nfs4_layoutreturn
*lrp
= calldata
;
6445 struct nfs_server
*server
;
6447 dprintk("--> %s\n", __func__
);
6449 if (!nfs41_sequence_done(task
, &lrp
->res
.seq_res
))
6452 server
= NFS_SERVER(lrp
->args
.inode
);
6453 if (nfs4_async_handle_error(task
, server
, NULL
) == -EAGAIN
) {
6454 rpc_restart_call_prepare(task
);
6457 dprintk("<-- %s\n", __func__
);
6460 static void nfs4_layoutreturn_release(void *calldata
)
6462 struct nfs4_layoutreturn
*lrp
= calldata
;
6463 struct pnfs_layout_hdr
*lo
= lrp
->args
.layout
;
6465 dprintk("--> %s\n", __func__
);
6466 spin_lock(&lo
->plh_inode
->i_lock
);
6467 if (lrp
->res
.lrs_present
)
6468 pnfs_set_layout_stateid(lo
, &lrp
->res
.stateid
, true);
6469 lo
->plh_block_lgets
--;
6470 spin_unlock(&lo
->plh_inode
->i_lock
);
6471 pnfs_put_layout_hdr(lrp
->args
.layout
);
6473 dprintk("<-- %s\n", __func__
);
6476 static const struct rpc_call_ops nfs4_layoutreturn_call_ops
= {
6477 .rpc_call_prepare
= nfs4_layoutreturn_prepare
,
6478 .rpc_call_done
= nfs4_layoutreturn_done
,
6479 .rpc_release
= nfs4_layoutreturn_release
,
6482 int nfs4_proc_layoutreturn(struct nfs4_layoutreturn
*lrp
)
6484 struct rpc_task
*task
;
6485 struct rpc_message msg
= {
6486 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LAYOUTRETURN
],
6487 .rpc_argp
= &lrp
->args
,
6488 .rpc_resp
= &lrp
->res
,
6490 struct rpc_task_setup task_setup_data
= {
6491 .rpc_client
= lrp
->clp
->cl_rpcclient
,
6492 .rpc_message
= &msg
,
6493 .callback_ops
= &nfs4_layoutreturn_call_ops
,
6494 .callback_data
= lrp
,
6498 dprintk("--> %s\n", __func__
);
6499 nfs41_init_sequence(&lrp
->args
.seq_args
, &lrp
->res
.seq_res
, 1);
6500 task
= rpc_run_task(&task_setup_data
);
6502 return PTR_ERR(task
);
6503 status
= task
->tk_status
;
6504 dprintk("<-- %s status=%d\n", __func__
, status
);
6510 * Retrieve the list of Data Server devices from the MDS.
6512 static int _nfs4_getdevicelist(struct nfs_server
*server
,
6513 const struct nfs_fh
*fh
,
6514 struct pnfs_devicelist
*devlist
)
6516 struct nfs4_getdevicelist_args args
= {
6518 .layoutclass
= server
->pnfs_curr_ld
->id
,
6520 struct nfs4_getdevicelist_res res
= {
6523 struct rpc_message msg
= {
6524 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GETDEVICELIST
],
6530 dprintk("--> %s\n", __func__
);
6531 status
= nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
,
6533 dprintk("<-- %s status=%d\n", __func__
, status
);
6537 int nfs4_proc_getdevicelist(struct nfs_server
*server
,
6538 const struct nfs_fh
*fh
,
6539 struct pnfs_devicelist
*devlist
)
6541 struct nfs4_exception exception
= { };
6545 err
= nfs4_handle_exception(server
,
6546 _nfs4_getdevicelist(server
, fh
, devlist
),
6548 } while (exception
.retry
);
6550 dprintk("%s: err=%d, num_devs=%u\n", __func__
,
6551 err
, devlist
->num_devs
);
6555 EXPORT_SYMBOL_GPL(nfs4_proc_getdevicelist
);
6558 _nfs4_proc_getdeviceinfo(struct nfs_server
*server
, struct pnfs_device
*pdev
)
6560 struct nfs4_getdeviceinfo_args args
= {
6563 struct nfs4_getdeviceinfo_res res
= {
6566 struct rpc_message msg
= {
6567 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GETDEVICEINFO
],
6573 dprintk("--> %s\n", __func__
);
6574 status
= nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
6575 dprintk("<-- %s status=%d\n", __func__
, status
);
6580 int nfs4_proc_getdeviceinfo(struct nfs_server
*server
, struct pnfs_device
*pdev
)
6582 struct nfs4_exception exception
= { };
6586 err
= nfs4_handle_exception(server
,
6587 _nfs4_proc_getdeviceinfo(server
, pdev
),
6589 } while (exception
.retry
);
6592 EXPORT_SYMBOL_GPL(nfs4_proc_getdeviceinfo
);
6594 static void nfs4_layoutcommit_prepare(struct rpc_task
*task
, void *calldata
)
6596 struct nfs4_layoutcommit_data
*data
= calldata
;
6597 struct nfs_server
*server
= NFS_SERVER(data
->args
.inode
);
6598 struct nfs4_session
*session
= nfs4_get_session(server
);
6600 nfs41_setup_sequence(session
,
6601 &data
->args
.seq_args
,
6607 nfs4_layoutcommit_done(struct rpc_task
*task
, void *calldata
)
6609 struct nfs4_layoutcommit_data
*data
= calldata
;
6610 struct nfs_server
*server
= NFS_SERVER(data
->args
.inode
);
6612 if (!nfs41_sequence_done(task
, &data
->res
.seq_res
))
6615 switch (task
->tk_status
) { /* Just ignore these failures */
6616 case -NFS4ERR_DELEG_REVOKED
: /* layout was recalled */
6617 case -NFS4ERR_BADIOMODE
: /* no IOMODE_RW layout for range */
6618 case -NFS4ERR_BADLAYOUT
: /* no layout */
6619 case -NFS4ERR_GRACE
: /* loca_recalim always false */
6620 task
->tk_status
= 0;
6623 nfs_post_op_update_inode_force_wcc(data
->args
.inode
,
6627 if (nfs4_async_handle_error(task
, server
, NULL
) == -EAGAIN
) {
6628 rpc_restart_call_prepare(task
);
6634 static void nfs4_layoutcommit_release(void *calldata
)
6636 struct nfs4_layoutcommit_data
*data
= calldata
;
6638 pnfs_cleanup_layoutcommit(data
);
6639 put_rpccred(data
->cred
);
6643 static const struct rpc_call_ops nfs4_layoutcommit_ops
= {
6644 .rpc_call_prepare
= nfs4_layoutcommit_prepare
,
6645 .rpc_call_done
= nfs4_layoutcommit_done
,
6646 .rpc_release
= nfs4_layoutcommit_release
,
6650 nfs4_proc_layoutcommit(struct nfs4_layoutcommit_data
*data
, bool sync
)
6652 struct rpc_message msg
= {
6653 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LAYOUTCOMMIT
],
6654 .rpc_argp
= &data
->args
,
6655 .rpc_resp
= &data
->res
,
6656 .rpc_cred
= data
->cred
,
6658 struct rpc_task_setup task_setup_data
= {
6659 .task
= &data
->task
,
6660 .rpc_client
= NFS_CLIENT(data
->args
.inode
),
6661 .rpc_message
= &msg
,
6662 .callback_ops
= &nfs4_layoutcommit_ops
,
6663 .callback_data
= data
,
6664 .flags
= RPC_TASK_ASYNC
,
6666 struct rpc_task
*task
;
6669 dprintk("NFS: %4d initiating layoutcommit call. sync %d "
6670 "lbw: %llu inode %lu\n",
6671 data
->task
.tk_pid
, sync
,
6672 data
->args
.lastbytewritten
,
6673 data
->args
.inode
->i_ino
);
6675 nfs41_init_sequence(&data
->args
.seq_args
, &data
->res
.seq_res
, 1);
6676 task
= rpc_run_task(&task_setup_data
);
6678 return PTR_ERR(task
);
6681 status
= nfs4_wait_for_completion_rpc_task(task
);
6684 status
= task
->tk_status
;
6686 dprintk("%s: status %d\n", __func__
, status
);
6692 _nfs41_proc_secinfo_no_name(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
6693 struct nfs_fsinfo
*info
, struct nfs4_secinfo_flavors
*flavors
)
6695 struct nfs41_secinfo_no_name_args args
= {
6696 .style
= SECINFO_STYLE_CURRENT_FH
,
6698 struct nfs4_secinfo_res res
= {
6701 struct rpc_message msg
= {
6702 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SECINFO_NO_NAME
],
6706 return nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
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 nfs4_exception exception
= { };
6716 err
= _nfs41_proc_secinfo_no_name(server
, fhandle
, info
, flavors
);
6719 case -NFS4ERR_WRONGSEC
:
6723 err
= nfs4_handle_exception(server
, err
, &exception
);
6725 } while (exception
.retry
);
6731 nfs41_find_root_sec(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
6732 struct nfs_fsinfo
*info
)
6736 rpc_authflavor_t flavor
;
6737 struct nfs4_secinfo_flavors
*flavors
;
6739 page
= alloc_page(GFP_KERNEL
);
6745 flavors
= page_address(page
);
6746 err
= nfs41_proc_secinfo_no_name(server
, fhandle
, info
, flavors
);
6749 * Fall back on "guess and check" method if
6750 * the server doesn't support SECINFO_NO_NAME
6752 if (err
== -NFS4ERR_WRONGSEC
|| err
== -ENOTSUPP
) {
6753 err
= nfs4_find_root_sec(server
, fhandle
, info
);
6759 flavor
= nfs_find_best_sec(flavors
);
6761 err
= nfs4_lookup_root_sec(server
, fhandle
, info
, flavor
);
6771 static int _nfs41_test_stateid(struct nfs_server
*server
, nfs4_stateid
*stateid
)
6774 struct nfs41_test_stateid_args args
= {
6777 struct nfs41_test_stateid_res res
;
6778 struct rpc_message msg
= {
6779 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_TEST_STATEID
],
6784 dprintk("NFS call test_stateid %p\n", stateid
);
6785 nfs41_init_sequence(&args
.seq_args
, &res
.seq_res
, 0);
6786 nfs4_set_sequence_privileged(&args
.seq_args
);
6787 status
= nfs4_call_sync_sequence(server
->client
, server
, &msg
,
6788 &args
.seq_args
, &res
.seq_res
);
6789 if (status
!= NFS_OK
) {
6790 dprintk("NFS reply test_stateid: failed, %d\n", status
);
6793 dprintk("NFS reply test_stateid: succeeded, %d\n", -res
.status
);
6798 * nfs41_test_stateid - perform a TEST_STATEID operation
6800 * @server: server / transport on which to perform the operation
6801 * @stateid: state ID to test
6803 * Returns NFS_OK if the server recognizes that "stateid" is valid.
6804 * Otherwise a negative NFS4ERR value is returned if the operation
6805 * failed or the state ID is not currently valid.
6807 static int nfs41_test_stateid(struct nfs_server
*server
, nfs4_stateid
*stateid
)
6809 struct nfs4_exception exception
= { };
6812 err
= _nfs41_test_stateid(server
, stateid
);
6813 if (err
!= -NFS4ERR_DELAY
)
6815 nfs4_handle_exception(server
, err
, &exception
);
6816 } while (exception
.retry
);
6820 struct nfs_free_stateid_data
{
6821 struct nfs_server
*server
;
6822 struct nfs41_free_stateid_args args
;
6823 struct nfs41_free_stateid_res res
;
6826 static void nfs41_free_stateid_prepare(struct rpc_task
*task
, void *calldata
)
6828 struct nfs_free_stateid_data
*data
= calldata
;
6829 nfs41_setup_sequence(nfs4_get_session(data
->server
),
6830 &data
->args
.seq_args
,
6835 static void nfs41_free_stateid_done(struct rpc_task
*task
, void *calldata
)
6837 struct nfs_free_stateid_data
*data
= calldata
;
6839 nfs41_sequence_done(task
, &data
->res
.seq_res
);
6841 switch (task
->tk_status
) {
6842 case -NFS4ERR_DELAY
:
6843 if (nfs4_async_handle_error(task
, data
->server
, NULL
) == -EAGAIN
)
6844 rpc_restart_call_prepare(task
);
6848 static void nfs41_free_stateid_release(void *calldata
)
6853 const struct rpc_call_ops nfs41_free_stateid_ops
= {
6854 .rpc_call_prepare
= nfs41_free_stateid_prepare
,
6855 .rpc_call_done
= nfs41_free_stateid_done
,
6856 .rpc_release
= nfs41_free_stateid_release
,
6859 static struct rpc_task
*_nfs41_free_stateid(struct nfs_server
*server
,
6860 nfs4_stateid
*stateid
,
6863 struct rpc_message msg
= {
6864 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_FREE_STATEID
],
6866 struct rpc_task_setup task_setup
= {
6867 .rpc_client
= server
->client
,
6868 .rpc_message
= &msg
,
6869 .callback_ops
= &nfs41_free_stateid_ops
,
6870 .flags
= RPC_TASK_ASYNC
,
6872 struct nfs_free_stateid_data
*data
;
6874 dprintk("NFS call free_stateid %p\n", stateid
);
6875 data
= kmalloc(sizeof(*data
), GFP_NOFS
);
6877 return ERR_PTR(-ENOMEM
);
6878 data
->server
= server
;
6879 nfs4_stateid_copy(&data
->args
.stateid
, stateid
);
6881 task_setup
.callback_data
= data
;
6883 msg
.rpc_argp
= &data
->args
;
6884 msg
.rpc_resp
= &data
->res
;
6885 nfs41_init_sequence(&data
->args
.seq_args
, &data
->res
.seq_res
, 0);
6887 nfs4_set_sequence_privileged(&data
->args
.seq_args
);
6889 return rpc_run_task(&task_setup
);
6893 * nfs41_free_stateid - perform a FREE_STATEID operation
6895 * @server: server / transport on which to perform the operation
6896 * @stateid: state ID to release
6898 * Returns NFS_OK if the server freed "stateid". Otherwise a
6899 * negative NFS4ERR value is returned.
6901 static int nfs41_free_stateid(struct nfs_server
*server
, nfs4_stateid
*stateid
)
6903 struct rpc_task
*task
;
6906 task
= _nfs41_free_stateid(server
, stateid
, true);
6908 return PTR_ERR(task
);
6909 ret
= rpc_wait_for_completion_task(task
);
6911 ret
= task
->tk_status
;
6916 static int nfs41_free_lock_state(struct nfs_server
*server
, struct nfs4_lock_state
*lsp
)
6918 struct rpc_task
*task
;
6920 task
= _nfs41_free_stateid(server
, &lsp
->ls_stateid
, false);
6921 nfs4_free_lock_state(server
, lsp
);
6923 return PTR_ERR(task
);
6928 static bool nfs41_match_stateid(const nfs4_stateid
*s1
,
6929 const nfs4_stateid
*s2
)
6931 if (memcmp(s1
->other
, s2
->other
, sizeof(s1
->other
)) != 0)
6934 if (s1
->seqid
== s2
->seqid
)
6936 if (s1
->seqid
== 0 || s2
->seqid
== 0)
6942 #endif /* CONFIG_NFS_V4_1 */
6944 static bool nfs4_match_stateid(const nfs4_stateid
*s1
,
6945 const nfs4_stateid
*s2
)
6947 return nfs4_stateid_match(s1
, s2
);
6951 static const struct nfs4_state_recovery_ops nfs40_reboot_recovery_ops
= {
6952 .owner_flag_bit
= NFS_OWNER_RECLAIM_REBOOT
,
6953 .state_flag_bit
= NFS_STATE_RECLAIM_REBOOT
,
6954 .recover_open
= nfs4_open_reclaim
,
6955 .recover_lock
= nfs4_lock_reclaim
,
6956 .establish_clid
= nfs4_init_clientid
,
6957 .get_clid_cred
= nfs4_get_setclientid_cred
,
6958 .detect_trunking
= nfs40_discover_server_trunking
,
6961 #if defined(CONFIG_NFS_V4_1)
6962 static const struct nfs4_state_recovery_ops nfs41_reboot_recovery_ops
= {
6963 .owner_flag_bit
= NFS_OWNER_RECLAIM_REBOOT
,
6964 .state_flag_bit
= NFS_STATE_RECLAIM_REBOOT
,
6965 .recover_open
= nfs4_open_reclaim
,
6966 .recover_lock
= nfs4_lock_reclaim
,
6967 .establish_clid
= nfs41_init_clientid
,
6968 .get_clid_cred
= nfs4_get_exchange_id_cred
,
6969 .reclaim_complete
= nfs41_proc_reclaim_complete
,
6970 .detect_trunking
= nfs41_discover_server_trunking
,
6972 #endif /* CONFIG_NFS_V4_1 */
6974 static const struct nfs4_state_recovery_ops nfs40_nograce_recovery_ops
= {
6975 .owner_flag_bit
= NFS_OWNER_RECLAIM_NOGRACE
,
6976 .state_flag_bit
= NFS_STATE_RECLAIM_NOGRACE
,
6977 .recover_open
= nfs4_open_expired
,
6978 .recover_lock
= nfs4_lock_expired
,
6979 .establish_clid
= nfs4_init_clientid
,
6980 .get_clid_cred
= nfs4_get_setclientid_cred
,
6983 #if defined(CONFIG_NFS_V4_1)
6984 static const struct nfs4_state_recovery_ops nfs41_nograce_recovery_ops
= {
6985 .owner_flag_bit
= NFS_OWNER_RECLAIM_NOGRACE
,
6986 .state_flag_bit
= NFS_STATE_RECLAIM_NOGRACE
,
6987 .recover_open
= nfs41_open_expired
,
6988 .recover_lock
= nfs41_lock_expired
,
6989 .establish_clid
= nfs41_init_clientid
,
6990 .get_clid_cred
= nfs4_get_exchange_id_cred
,
6992 #endif /* CONFIG_NFS_V4_1 */
6994 static const struct nfs4_state_maintenance_ops nfs40_state_renewal_ops
= {
6995 .sched_state_renewal
= nfs4_proc_async_renew
,
6996 .get_state_renewal_cred_locked
= nfs4_get_renew_cred_locked
,
6997 .renew_lease
= nfs4_proc_renew
,
7000 #if defined(CONFIG_NFS_V4_1)
7001 static const struct nfs4_state_maintenance_ops nfs41_state_renewal_ops
= {
7002 .sched_state_renewal
= nfs41_proc_async_sequence
,
7003 .get_state_renewal_cred_locked
= nfs4_get_machine_cred_locked
,
7004 .renew_lease
= nfs4_proc_sequence
,
7008 static const struct nfs4_minor_version_ops nfs_v4_0_minor_ops
= {
7010 .init_caps
= NFS_CAP_READDIRPLUS
7011 | NFS_CAP_ATOMIC_OPEN
7012 | NFS_CAP_CHANGE_ATTR
7013 | NFS_CAP_POSIX_LOCK
,
7014 .call_sync
= _nfs4_call_sync
,
7015 .match_stateid
= nfs4_match_stateid
,
7016 .find_root_sec
= nfs4_find_root_sec
,
7017 .free_lock_state
= nfs4_release_lockowner
,
7018 .reboot_recovery_ops
= &nfs40_reboot_recovery_ops
,
7019 .nograce_recovery_ops
= &nfs40_nograce_recovery_ops
,
7020 .state_renewal_ops
= &nfs40_state_renewal_ops
,
7023 #if defined(CONFIG_NFS_V4_1)
7024 static const struct nfs4_minor_version_ops nfs_v4_1_minor_ops
= {
7026 .init_caps
= NFS_CAP_READDIRPLUS
7027 | NFS_CAP_ATOMIC_OPEN
7028 | NFS_CAP_CHANGE_ATTR
7029 | NFS_CAP_POSIX_LOCK
7030 | NFS_CAP_STATEID_NFSV41
7031 | NFS_CAP_ATOMIC_OPEN_V1
,
7032 .call_sync
= nfs4_call_sync_sequence
,
7033 .match_stateid
= nfs41_match_stateid
,
7034 .find_root_sec
= nfs41_find_root_sec
,
7035 .free_lock_state
= nfs41_free_lock_state
,
7036 .reboot_recovery_ops
= &nfs41_reboot_recovery_ops
,
7037 .nograce_recovery_ops
= &nfs41_nograce_recovery_ops
,
7038 .state_renewal_ops
= &nfs41_state_renewal_ops
,
7042 const struct nfs4_minor_version_ops
*nfs_v4_minor_ops
[] = {
7043 [0] = &nfs_v4_0_minor_ops
,
7044 #if defined(CONFIG_NFS_V4_1)
7045 [1] = &nfs_v4_1_minor_ops
,
7049 const struct inode_operations nfs4_dir_inode_operations
= {
7050 .create
= nfs_create
,
7051 .lookup
= nfs_lookup
,
7052 .atomic_open
= nfs_atomic_open
,
7054 .unlink
= nfs_unlink
,
7055 .symlink
= nfs_symlink
,
7059 .rename
= nfs_rename
,
7060 .permission
= nfs_permission
,
7061 .getattr
= nfs_getattr
,
7062 .setattr
= nfs_setattr
,
7063 .getxattr
= generic_getxattr
,
7064 .setxattr
= generic_setxattr
,
7065 .listxattr
= generic_listxattr
,
7066 .removexattr
= generic_removexattr
,
7069 static const struct inode_operations nfs4_file_inode_operations
= {
7070 .permission
= nfs_permission
,
7071 .getattr
= nfs_getattr
,
7072 .setattr
= nfs_setattr
,
7073 .getxattr
= generic_getxattr
,
7074 .setxattr
= generic_setxattr
,
7075 .listxattr
= generic_listxattr
,
7076 .removexattr
= generic_removexattr
,
7079 const struct nfs_rpc_ops nfs_v4_clientops
= {
7080 .version
= 4, /* protocol version */
7081 .dentry_ops
= &nfs4_dentry_operations
,
7082 .dir_inode_ops
= &nfs4_dir_inode_operations
,
7083 .file_inode_ops
= &nfs4_file_inode_operations
,
7084 .file_ops
= &nfs4_file_operations
,
7085 .getroot
= nfs4_proc_get_root
,
7086 .submount
= nfs4_submount
,
7087 .try_mount
= nfs4_try_mount
,
7088 .getattr
= nfs4_proc_getattr
,
7089 .setattr
= nfs4_proc_setattr
,
7090 .lookup
= nfs4_proc_lookup
,
7091 .access
= nfs4_proc_access
,
7092 .readlink
= nfs4_proc_readlink
,
7093 .create
= nfs4_proc_create
,
7094 .remove
= nfs4_proc_remove
,
7095 .unlink_setup
= nfs4_proc_unlink_setup
,
7096 .unlink_rpc_prepare
= nfs4_proc_unlink_rpc_prepare
,
7097 .unlink_done
= nfs4_proc_unlink_done
,
7098 .rename
= nfs4_proc_rename
,
7099 .rename_setup
= nfs4_proc_rename_setup
,
7100 .rename_rpc_prepare
= nfs4_proc_rename_rpc_prepare
,
7101 .rename_done
= nfs4_proc_rename_done
,
7102 .link
= nfs4_proc_link
,
7103 .symlink
= nfs4_proc_symlink
,
7104 .mkdir
= nfs4_proc_mkdir
,
7105 .rmdir
= nfs4_proc_remove
,
7106 .readdir
= nfs4_proc_readdir
,
7107 .mknod
= nfs4_proc_mknod
,
7108 .statfs
= nfs4_proc_statfs
,
7109 .fsinfo
= nfs4_proc_fsinfo
,
7110 .pathconf
= nfs4_proc_pathconf
,
7111 .set_capabilities
= nfs4_server_capabilities
,
7112 .decode_dirent
= nfs4_decode_dirent
,
7113 .read_setup
= nfs4_proc_read_setup
,
7114 .read_pageio_init
= pnfs_pageio_init_read
,
7115 .read_rpc_prepare
= nfs4_proc_read_rpc_prepare
,
7116 .read_done
= nfs4_read_done
,
7117 .write_setup
= nfs4_proc_write_setup
,
7118 .write_pageio_init
= pnfs_pageio_init_write
,
7119 .write_rpc_prepare
= nfs4_proc_write_rpc_prepare
,
7120 .write_done
= nfs4_write_done
,
7121 .commit_setup
= nfs4_proc_commit_setup
,
7122 .commit_rpc_prepare
= nfs4_proc_commit_rpc_prepare
,
7123 .commit_done
= nfs4_commit_done
,
7124 .lock
= nfs4_proc_lock
,
7125 .clear_acl_cache
= nfs4_zap_acl_attr
,
7126 .close_context
= nfs4_close_context
,
7127 .open_context
= nfs4_atomic_open
,
7128 .have_delegation
= nfs4_have_delegation
,
7129 .return_delegation
= nfs4_inode_return_delegation
,
7130 .alloc_client
= nfs4_alloc_client
,
7131 .init_client
= nfs4_init_client
,
7132 .free_client
= nfs4_free_client
,
7133 .create_server
= nfs4_create_server
,
7134 .clone_server
= nfs_clone_server
,
7137 static const struct xattr_handler nfs4_xattr_nfs4_acl_handler
= {
7138 .prefix
= XATTR_NAME_NFSV4_ACL
,
7139 .list
= nfs4_xattr_list_nfs4_acl
,
7140 .get
= nfs4_xattr_get_nfs4_acl
,
7141 .set
= nfs4_xattr_set_nfs4_acl
,
7144 const struct xattr_handler
*nfs4_xattr_handlers
[] = {
7145 &nfs4_xattr_nfs4_acl_handler
,