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
:
111 dprintk("%s could not handle NFSv4 error %d\n",
119 * This is our standard bitmap for GETATTR requests.
121 const u32 nfs4_fattr_bitmap
[3] = {
123 | FATTR4_WORD0_CHANGE
126 | FATTR4_WORD0_FILEID
,
128 | FATTR4_WORD1_NUMLINKS
130 | FATTR4_WORD1_OWNER_GROUP
131 | FATTR4_WORD1_RAWDEV
132 | FATTR4_WORD1_SPACE_USED
133 | FATTR4_WORD1_TIME_ACCESS
134 | FATTR4_WORD1_TIME_METADATA
135 | FATTR4_WORD1_TIME_MODIFY
138 static const u32 nfs4_pnfs_open_bitmap
[3] = {
140 | FATTR4_WORD0_CHANGE
143 | FATTR4_WORD0_FILEID
,
145 | FATTR4_WORD1_NUMLINKS
147 | FATTR4_WORD1_OWNER_GROUP
148 | FATTR4_WORD1_RAWDEV
149 | FATTR4_WORD1_SPACE_USED
150 | FATTR4_WORD1_TIME_ACCESS
151 | FATTR4_WORD1_TIME_METADATA
152 | FATTR4_WORD1_TIME_MODIFY
,
153 FATTR4_WORD2_MDSTHRESHOLD
156 static const u32 nfs4_open_noattr_bitmap
[3] = {
158 | FATTR4_WORD0_CHANGE
159 | FATTR4_WORD0_FILEID
,
162 const u32 nfs4_statfs_bitmap
[2] = {
163 FATTR4_WORD0_FILES_AVAIL
164 | FATTR4_WORD0_FILES_FREE
165 | FATTR4_WORD0_FILES_TOTAL
,
166 FATTR4_WORD1_SPACE_AVAIL
167 | FATTR4_WORD1_SPACE_FREE
168 | FATTR4_WORD1_SPACE_TOTAL
171 const u32 nfs4_pathconf_bitmap
[2] = {
173 | FATTR4_WORD0_MAXNAME
,
177 const u32 nfs4_fsinfo_bitmap
[3] = { FATTR4_WORD0_MAXFILESIZE
178 | FATTR4_WORD0_MAXREAD
179 | FATTR4_WORD0_MAXWRITE
180 | FATTR4_WORD0_LEASE_TIME
,
181 FATTR4_WORD1_TIME_DELTA
182 | FATTR4_WORD1_FS_LAYOUT_TYPES
,
183 FATTR4_WORD2_LAYOUT_BLKSIZE
186 const u32 nfs4_fs_locations_bitmap
[2] = {
188 | FATTR4_WORD0_CHANGE
191 | FATTR4_WORD0_FILEID
192 | FATTR4_WORD0_FS_LOCATIONS
,
194 | FATTR4_WORD1_NUMLINKS
196 | FATTR4_WORD1_OWNER_GROUP
197 | FATTR4_WORD1_RAWDEV
198 | FATTR4_WORD1_SPACE_USED
199 | FATTR4_WORD1_TIME_ACCESS
200 | FATTR4_WORD1_TIME_METADATA
201 | FATTR4_WORD1_TIME_MODIFY
202 | FATTR4_WORD1_MOUNTED_ON_FILEID
205 static void nfs4_setup_readdir(u64 cookie
, __be32
*verifier
, struct dentry
*dentry
,
206 struct nfs4_readdir_arg
*readdir
)
211 readdir
->cookie
= cookie
;
212 memcpy(&readdir
->verifier
, verifier
, sizeof(readdir
->verifier
));
217 memset(&readdir
->verifier
, 0, sizeof(readdir
->verifier
));
222 * NFSv4 servers do not return entries for '.' and '..'
223 * Therefore, we fake these entries here. We let '.'
224 * have cookie 0 and '..' have cookie 1. Note that
225 * when talking to the server, we always send cookie 0
228 start
= p
= kmap_atomic(*readdir
->pages
);
231 *p
++ = xdr_one
; /* next */
232 *p
++ = xdr_zero
; /* cookie, first word */
233 *p
++ = xdr_one
; /* cookie, second word */
234 *p
++ = xdr_one
; /* entry len */
235 memcpy(p
, ".\0\0\0", 4); /* entry */
237 *p
++ = xdr_one
; /* bitmap length */
238 *p
++ = htonl(FATTR4_WORD0_FILEID
); /* bitmap */
239 *p
++ = htonl(8); /* attribute buffer length */
240 p
= xdr_encode_hyper(p
, NFS_FILEID(dentry
->d_inode
));
243 *p
++ = xdr_one
; /* next */
244 *p
++ = xdr_zero
; /* cookie, first word */
245 *p
++ = xdr_two
; /* cookie, second word */
246 *p
++ = xdr_two
; /* entry len */
247 memcpy(p
, "..\0\0", 4); /* entry */
249 *p
++ = xdr_one
; /* bitmap length */
250 *p
++ = htonl(FATTR4_WORD0_FILEID
); /* bitmap */
251 *p
++ = htonl(8); /* attribute buffer length */
252 p
= xdr_encode_hyper(p
, NFS_FILEID(dentry
->d_parent
->d_inode
));
254 readdir
->pgbase
= (char *)p
- (char *)start
;
255 readdir
->count
-= readdir
->pgbase
;
256 kunmap_atomic(start
);
259 static int nfs4_delay(struct rpc_clnt
*clnt
, long *timeout
)
266 *timeout
= NFS4_POLL_RETRY_MIN
;
267 if (*timeout
> NFS4_POLL_RETRY_MAX
)
268 *timeout
= NFS4_POLL_RETRY_MAX
;
269 freezable_schedule_timeout_killable(*timeout
);
270 if (fatal_signal_pending(current
))
276 /* This is the error handling routine for processes that are allowed
279 static int nfs4_handle_exception(struct nfs_server
*server
, int errorcode
, struct nfs4_exception
*exception
)
281 struct nfs_client
*clp
= server
->nfs_client
;
282 struct nfs4_state
*state
= exception
->state
;
283 struct inode
*inode
= exception
->inode
;
286 exception
->retry
= 0;
290 case -NFS4ERR_OPENMODE
:
291 if (inode
&& nfs4_have_delegation(inode
, FMODE_READ
)) {
292 nfs4_inode_return_delegation(inode
);
293 exception
->retry
= 1;
298 ret
= nfs4_schedule_stateid_recovery(server
, state
);
301 goto wait_on_recovery
;
302 case -NFS4ERR_DELEG_REVOKED
:
303 case -NFS4ERR_ADMIN_REVOKED
:
304 case -NFS4ERR_BAD_STATEID
:
307 nfs_remove_bad_delegation(state
->inode
);
308 ret
= nfs4_schedule_stateid_recovery(server
, state
);
311 goto wait_on_recovery
;
312 case -NFS4ERR_EXPIRED
:
314 ret
= nfs4_schedule_stateid_recovery(server
, state
);
318 case -NFS4ERR_STALE_STATEID
:
319 case -NFS4ERR_STALE_CLIENTID
:
320 nfs4_schedule_lease_recovery(clp
);
321 goto wait_on_recovery
;
322 #if defined(CONFIG_NFS_V4_1)
323 case -NFS4ERR_BADSESSION
:
324 case -NFS4ERR_BADSLOT
:
325 case -NFS4ERR_BAD_HIGH_SLOT
:
326 case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION
:
327 case -NFS4ERR_DEADSESSION
:
328 case -NFS4ERR_SEQ_FALSE_RETRY
:
329 case -NFS4ERR_SEQ_MISORDERED
:
330 dprintk("%s ERROR: %d Reset session\n", __func__
,
332 nfs4_schedule_session_recovery(clp
->cl_session
, errorcode
);
333 goto wait_on_recovery
;
334 #endif /* defined(CONFIG_NFS_V4_1) */
335 case -NFS4ERR_FILE_OPEN
:
336 if (exception
->timeout
> HZ
) {
337 /* We have retried a decent amount, time to
345 ret
= nfs4_delay(server
->client
, &exception
->timeout
);
348 case -NFS4ERR_RETRY_UNCACHED_REP
:
349 case -NFS4ERR_OLD_STATEID
:
350 exception
->retry
= 1;
352 case -NFS4ERR_BADOWNER
:
353 /* The following works around a Linux server bug! */
354 case -NFS4ERR_BADNAME
:
355 if (server
->caps
& NFS_CAP_UIDGID_NOMAP
) {
356 server
->caps
&= ~NFS_CAP_UIDGID_NOMAP
;
357 exception
->retry
= 1;
358 printk(KERN_WARNING
"NFS: v4 server %s "
359 "does not accept raw "
361 "Reenabling the idmapper.\n",
362 server
->nfs_client
->cl_hostname
);
365 /* We failed to handle the error */
366 return nfs4_map_errors(ret
);
368 ret
= nfs4_wait_clnt_recover(clp
);
370 exception
->retry
= 1;
375 static void do_renew_lease(struct nfs_client
*clp
, unsigned long timestamp
)
377 spin_lock(&clp
->cl_lock
);
378 if (time_before(clp
->cl_last_renewal
,timestamp
))
379 clp
->cl_last_renewal
= timestamp
;
380 spin_unlock(&clp
->cl_lock
);
383 static void renew_lease(const struct nfs_server
*server
, unsigned long timestamp
)
385 do_renew_lease(server
->nfs_client
, timestamp
);
388 #if defined(CONFIG_NFS_V4_1)
390 static void nfs41_sequence_free_slot(struct nfs4_sequence_res
*res
)
392 struct nfs4_session
*session
;
393 struct nfs4_slot_table
*tbl
;
394 bool send_new_highest_used_slotid
= false;
397 /* just wake up the next guy waiting since
398 * we may have not consumed a slot after all */
399 dprintk("%s: No slot\n", __func__
);
402 tbl
= res
->sr_slot
->table
;
403 session
= tbl
->session
;
405 spin_lock(&tbl
->slot_tbl_lock
);
406 /* Be nice to the server: try to ensure that the last transmitted
407 * value for highest_user_slotid <= target_highest_slotid
409 if (tbl
->highest_used_slotid
> tbl
->target_highest_slotid
)
410 send_new_highest_used_slotid
= true;
412 if (nfs41_wake_and_assign_slot(tbl
, res
->sr_slot
)) {
413 send_new_highest_used_slotid
= false;
416 nfs4_free_slot(tbl
, res
->sr_slot
);
418 if (tbl
->highest_used_slotid
!= NFS4_NO_SLOT
)
419 send_new_highest_used_slotid
= false;
421 spin_unlock(&tbl
->slot_tbl_lock
);
423 if (send_new_highest_used_slotid
)
424 nfs41_server_notify_highest_slotid_update(session
->clp
);
427 static int nfs41_sequence_done(struct rpc_task
*task
, struct nfs4_sequence_res
*res
)
429 struct nfs4_session
*session
;
430 struct nfs4_slot
*slot
;
431 struct nfs_client
*clp
;
432 bool interrupted
= false;
435 /* don't increment the sequence number if the task wasn't sent */
436 if (!RPC_WAS_SENT(task
))
440 session
= slot
->table
->session
;
442 if (slot
->interrupted
) {
443 slot
->interrupted
= 0;
447 /* Check the SEQUENCE operation status */
448 switch (res
->sr_status
) {
450 /* Update the slot's sequence and clientid lease timer */
453 do_renew_lease(clp
, res
->sr_timestamp
);
454 /* Check sequence flags */
455 if (res
->sr_status_flags
!= 0)
456 nfs4_schedule_lease_recovery(clp
);
457 nfs41_update_target_slotid(slot
->table
, slot
, res
);
461 * sr_status remains 1 if an RPC level error occurred.
462 * The server may or may not have processed the sequence
464 * Mark the slot as having hosted an interrupted RPC call.
466 slot
->interrupted
= 1;
469 /* The server detected a resend of the RPC call and
470 * returned NFS4ERR_DELAY as per Section 2.10.6.2
473 dprintk("%s: slot=%u seq=%u: Operation in progress\n",
478 case -NFS4ERR_BADSLOT
:
480 * The slot id we used was probably retired. Try again
481 * using a different slot id.
484 case -NFS4ERR_SEQ_MISORDERED
:
486 * Was the last operation on this sequence interrupted?
487 * If so, retry after bumping the sequence number.
494 * Could this slot have been previously retired?
495 * If so, then the server may be expecting seq_nr = 1!
497 if (slot
->seq_nr
!= 1) {
502 case -NFS4ERR_SEQ_FALSE_RETRY
:
506 /* Just update the slot sequence no. */
510 /* The session may be reset by one of the error handlers. */
511 dprintk("%s: Error %d free the slot \n", __func__
, res
->sr_status
);
512 nfs41_sequence_free_slot(res
);
515 if (rpc_restart_call_prepare(task
)) {
521 if (!rpc_restart_call(task
))
523 rpc_delay(task
, NFS4_POLL_RETRY_MAX
);
527 static int nfs4_sequence_done(struct rpc_task
*task
,
528 struct nfs4_sequence_res
*res
)
530 if (res
->sr_slot
== NULL
)
532 return nfs41_sequence_done(task
, res
);
535 static void nfs41_init_sequence(struct nfs4_sequence_args
*args
,
536 struct nfs4_sequence_res
*res
, int cache_reply
)
538 args
->sa_slot
= NULL
;
539 args
->sa_cache_this
= 0;
540 args
->sa_privileged
= 0;
542 args
->sa_cache_this
= 1;
546 static void nfs4_set_sequence_privileged(struct nfs4_sequence_args
*args
)
548 args
->sa_privileged
= 1;
551 int nfs41_setup_sequence(struct nfs4_session
*session
,
552 struct nfs4_sequence_args
*args
,
553 struct nfs4_sequence_res
*res
,
554 struct rpc_task
*task
)
556 struct nfs4_slot
*slot
;
557 struct nfs4_slot_table
*tbl
;
559 dprintk("--> %s\n", __func__
);
560 /* slot already allocated? */
561 if (res
->sr_slot
!= NULL
)
564 tbl
= &session
->fc_slot_table
;
566 task
->tk_timeout
= 0;
568 spin_lock(&tbl
->slot_tbl_lock
);
569 if (test_bit(NFS4_SESSION_DRAINING
, &session
->session_state
) &&
570 !args
->sa_privileged
) {
571 /* The state manager will wait until the slot table is empty */
572 dprintk("%s session is draining\n", __func__
);
576 slot
= nfs4_alloc_slot(tbl
);
578 /* If out of memory, try again in 1/4 second */
579 if (slot
== ERR_PTR(-ENOMEM
))
580 task
->tk_timeout
= HZ
>> 2;
581 dprintk("<-- %s: no free slots\n", __func__
);
584 spin_unlock(&tbl
->slot_tbl_lock
);
586 args
->sa_slot
= slot
;
588 dprintk("<-- %s slotid=%d seqid=%d\n", __func__
,
589 slot
->slot_nr
, slot
->seq_nr
);
592 res
->sr_timestamp
= jiffies
;
593 res
->sr_status_flags
= 0;
595 * sr_status is only set in decode_sequence, and so will remain
596 * set to 1 if an rpc level failure occurs.
600 rpc_call_start(task
);
603 /* Privileged tasks are queued with top priority */
604 if (args
->sa_privileged
)
605 rpc_sleep_on_priority(&tbl
->slot_tbl_waitq
, task
,
606 NULL
, RPC_PRIORITY_PRIVILEGED
);
608 rpc_sleep_on(&tbl
->slot_tbl_waitq
, task
, NULL
);
609 spin_unlock(&tbl
->slot_tbl_lock
);
612 EXPORT_SYMBOL_GPL(nfs41_setup_sequence
);
614 int nfs4_setup_sequence(const struct nfs_server
*server
,
615 struct nfs4_sequence_args
*args
,
616 struct nfs4_sequence_res
*res
,
617 struct rpc_task
*task
)
619 struct nfs4_session
*session
= nfs4_get_session(server
);
622 if (session
== NULL
) {
623 rpc_call_start(task
);
627 dprintk("--> %s clp %p session %p sr_slot %d\n",
628 __func__
, session
->clp
, session
, res
->sr_slot
?
629 res
->sr_slot
->slot_nr
: -1);
631 ret
= nfs41_setup_sequence(session
, args
, res
, task
);
633 dprintk("<-- %s status=%d\n", __func__
, ret
);
637 struct nfs41_call_sync_data
{
638 const struct nfs_server
*seq_server
;
639 struct nfs4_sequence_args
*seq_args
;
640 struct nfs4_sequence_res
*seq_res
;
643 static void nfs41_call_sync_prepare(struct rpc_task
*task
, void *calldata
)
645 struct nfs41_call_sync_data
*data
= calldata
;
646 struct nfs4_session
*session
= nfs4_get_session(data
->seq_server
);
648 dprintk("--> %s data->seq_server %p\n", __func__
, data
->seq_server
);
650 nfs41_setup_sequence(session
, data
->seq_args
, data
->seq_res
, task
);
653 static void nfs41_call_sync_done(struct rpc_task
*task
, void *calldata
)
655 struct nfs41_call_sync_data
*data
= calldata
;
657 nfs41_sequence_done(task
, data
->seq_res
);
660 static const struct rpc_call_ops nfs41_call_sync_ops
= {
661 .rpc_call_prepare
= nfs41_call_sync_prepare
,
662 .rpc_call_done
= nfs41_call_sync_done
,
665 static int nfs4_call_sync_sequence(struct rpc_clnt
*clnt
,
666 struct nfs_server
*server
,
667 struct rpc_message
*msg
,
668 struct nfs4_sequence_args
*args
,
669 struct nfs4_sequence_res
*res
)
672 struct rpc_task
*task
;
673 struct nfs41_call_sync_data data
= {
674 .seq_server
= server
,
678 struct rpc_task_setup task_setup
= {
681 .callback_ops
= &nfs41_call_sync_ops
,
682 .callback_data
= &data
685 task
= rpc_run_task(&task_setup
);
689 ret
= task
->tk_status
;
697 void nfs41_init_sequence(struct nfs4_sequence_args
*args
,
698 struct nfs4_sequence_res
*res
, int cache_reply
)
702 static void nfs4_set_sequence_privileged(struct nfs4_sequence_args
*args
)
707 static int nfs4_sequence_done(struct rpc_task
*task
,
708 struct nfs4_sequence_res
*res
)
712 #endif /* CONFIG_NFS_V4_1 */
715 int _nfs4_call_sync(struct rpc_clnt
*clnt
,
716 struct nfs_server
*server
,
717 struct rpc_message
*msg
,
718 struct nfs4_sequence_args
*args
,
719 struct nfs4_sequence_res
*res
)
721 return rpc_call_sync(clnt
, msg
, 0);
725 int nfs4_call_sync(struct rpc_clnt
*clnt
,
726 struct nfs_server
*server
,
727 struct rpc_message
*msg
,
728 struct nfs4_sequence_args
*args
,
729 struct nfs4_sequence_res
*res
,
732 nfs41_init_sequence(args
, res
, cache_reply
);
733 return server
->nfs_client
->cl_mvops
->call_sync(clnt
, server
, msg
,
737 static void update_changeattr(struct inode
*dir
, struct nfs4_change_info
*cinfo
)
739 struct nfs_inode
*nfsi
= NFS_I(dir
);
741 spin_lock(&dir
->i_lock
);
742 nfsi
->cache_validity
|= NFS_INO_INVALID_ATTR
|NFS_INO_INVALID_DATA
;
743 if (!cinfo
->atomic
|| cinfo
->before
!= dir
->i_version
)
744 nfs_force_lookup_revalidate(dir
);
745 dir
->i_version
= cinfo
->after
;
746 nfs_fscache_invalidate(dir
);
747 spin_unlock(&dir
->i_lock
);
750 struct nfs4_opendata
{
752 struct nfs_openargs o_arg
;
753 struct nfs_openres o_res
;
754 struct nfs_open_confirmargs c_arg
;
755 struct nfs_open_confirmres c_res
;
756 struct nfs4_string owner_name
;
757 struct nfs4_string group_name
;
758 struct nfs_fattr f_attr
;
760 struct dentry
*dentry
;
761 struct nfs4_state_owner
*owner
;
762 struct nfs4_state
*state
;
764 unsigned long timestamp
;
765 unsigned int rpc_done
: 1;
771 static void nfs4_init_opendata_res(struct nfs4_opendata
*p
)
773 p
->o_res
.f_attr
= &p
->f_attr
;
774 p
->o_res
.seqid
= p
->o_arg
.seqid
;
775 p
->c_res
.seqid
= p
->c_arg
.seqid
;
776 p
->o_res
.server
= p
->o_arg
.server
;
777 p
->o_res
.access_request
= p
->o_arg
.access
;
778 nfs_fattr_init(&p
->f_attr
);
779 nfs_fattr_init_names(&p
->f_attr
, &p
->owner_name
, &p
->group_name
);
782 static struct nfs4_opendata
*nfs4_opendata_alloc(struct dentry
*dentry
,
783 struct nfs4_state_owner
*sp
, fmode_t fmode
, int flags
,
784 const struct iattr
*attrs
,
787 struct dentry
*parent
= dget_parent(dentry
);
788 struct inode
*dir
= parent
->d_inode
;
789 struct nfs_server
*server
= NFS_SERVER(dir
);
790 struct nfs4_opendata
*p
;
792 p
= kzalloc(sizeof(*p
), gfp_mask
);
795 p
->o_arg
.seqid
= nfs_alloc_seqid(&sp
->so_seqid
, gfp_mask
);
796 if (p
->o_arg
.seqid
== NULL
)
798 nfs_sb_active(dentry
->d_sb
);
799 p
->dentry
= dget(dentry
);
802 atomic_inc(&sp
->so_count
);
803 p
->o_arg
.fh
= NFS_FH(dir
);
804 p
->o_arg
.open_flags
= flags
;
805 p
->o_arg
.fmode
= fmode
& (FMODE_READ
|FMODE_WRITE
);
806 /* don't put an ACCESS op in OPEN compound if O_EXCL, because ACCESS
807 * will return permission denied for all bits until close */
808 if (!(flags
& O_EXCL
)) {
809 /* ask server to check for all possible rights as results
811 p
->o_arg
.access
= NFS4_ACCESS_READ
| NFS4_ACCESS_MODIFY
|
812 NFS4_ACCESS_EXTEND
| NFS4_ACCESS_EXECUTE
;
814 p
->o_arg
.clientid
= server
->nfs_client
->cl_clientid
;
815 p
->o_arg
.id
.create_time
= ktime_to_ns(sp
->so_seqid
.create_time
);
816 p
->o_arg
.id
.uniquifier
= sp
->so_seqid
.owner_id
;
817 p
->o_arg
.name
= &dentry
->d_name
;
818 p
->o_arg
.server
= server
;
819 p
->o_arg
.bitmask
= server
->attr_bitmask
;
820 p
->o_arg
.open_bitmap
= &nfs4_fattr_bitmap
[0];
821 p
->o_arg
.claim
= NFS4_OPEN_CLAIM_NULL
;
822 if (attrs
!= NULL
&& attrs
->ia_valid
!= 0) {
825 p
->o_arg
.u
.attrs
= &p
->attrs
;
826 memcpy(&p
->attrs
, attrs
, sizeof(p
->attrs
));
829 verf
[1] = current
->pid
;
830 memcpy(p
->o_arg
.u
.verifier
.data
, verf
,
831 sizeof(p
->o_arg
.u
.verifier
.data
));
833 p
->c_arg
.fh
= &p
->o_res
.fh
;
834 p
->c_arg
.stateid
= &p
->o_res
.stateid
;
835 p
->c_arg
.seqid
= p
->o_arg
.seqid
;
836 nfs4_init_opendata_res(p
);
846 static void nfs4_opendata_free(struct kref
*kref
)
848 struct nfs4_opendata
*p
= container_of(kref
,
849 struct nfs4_opendata
, kref
);
850 struct super_block
*sb
= p
->dentry
->d_sb
;
852 nfs_free_seqid(p
->o_arg
.seqid
);
853 if (p
->state
!= NULL
)
854 nfs4_put_open_state(p
->state
);
855 nfs4_put_state_owner(p
->owner
);
859 nfs_fattr_free_names(&p
->f_attr
);
863 static void nfs4_opendata_put(struct nfs4_opendata
*p
)
866 kref_put(&p
->kref
, nfs4_opendata_free
);
869 static int nfs4_wait_for_completion_rpc_task(struct rpc_task
*task
)
873 ret
= rpc_wait_for_completion_task(task
);
877 static int can_open_cached(struct nfs4_state
*state
, fmode_t mode
, int open_mode
)
881 if (open_mode
& (O_EXCL
|O_TRUNC
))
883 switch (mode
& (FMODE_READ
|FMODE_WRITE
)) {
885 ret
|= test_bit(NFS_O_RDONLY_STATE
, &state
->flags
) != 0
886 && state
->n_rdonly
!= 0;
889 ret
|= test_bit(NFS_O_WRONLY_STATE
, &state
->flags
) != 0
890 && state
->n_wronly
!= 0;
892 case FMODE_READ
|FMODE_WRITE
:
893 ret
|= test_bit(NFS_O_RDWR_STATE
, &state
->flags
) != 0
894 && state
->n_rdwr
!= 0;
900 static int can_open_delegated(struct nfs_delegation
*delegation
, fmode_t fmode
)
902 if (delegation
== NULL
)
904 if ((delegation
->type
& fmode
) != fmode
)
906 if (test_bit(NFS_DELEGATION_NEED_RECLAIM
, &delegation
->flags
))
908 if (test_bit(NFS_DELEGATION_RETURNING
, &delegation
->flags
))
910 nfs_mark_delegation_referenced(delegation
);
914 static void update_open_stateflags(struct nfs4_state
*state
, fmode_t fmode
)
923 case FMODE_READ
|FMODE_WRITE
:
926 nfs4_state_set_mode_locked(state
, state
->state
| fmode
);
929 static void nfs_set_open_stateid_locked(struct nfs4_state
*state
, nfs4_stateid
*stateid
, fmode_t fmode
)
931 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) == 0)
932 nfs4_stateid_copy(&state
->stateid
, stateid
);
933 nfs4_stateid_copy(&state
->open_stateid
, stateid
);
936 set_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
939 set_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
941 case FMODE_READ
|FMODE_WRITE
:
942 set_bit(NFS_O_RDWR_STATE
, &state
->flags
);
946 static void nfs_set_open_stateid(struct nfs4_state
*state
, nfs4_stateid
*stateid
, fmode_t fmode
)
948 write_seqlock(&state
->seqlock
);
949 nfs_set_open_stateid_locked(state
, stateid
, fmode
);
950 write_sequnlock(&state
->seqlock
);
953 static void __update_open_stateid(struct nfs4_state
*state
, nfs4_stateid
*open_stateid
, const nfs4_stateid
*deleg_stateid
, fmode_t fmode
)
956 * Protect the call to nfs4_state_set_mode_locked and
957 * serialise the stateid update
959 write_seqlock(&state
->seqlock
);
960 if (deleg_stateid
!= NULL
) {
961 nfs4_stateid_copy(&state
->stateid
, deleg_stateid
);
962 set_bit(NFS_DELEGATED_STATE
, &state
->flags
);
964 if (open_stateid
!= NULL
)
965 nfs_set_open_stateid_locked(state
, open_stateid
, fmode
);
966 write_sequnlock(&state
->seqlock
);
967 spin_lock(&state
->owner
->so_lock
);
968 update_open_stateflags(state
, fmode
);
969 spin_unlock(&state
->owner
->so_lock
);
972 static int update_open_stateid(struct nfs4_state
*state
, nfs4_stateid
*open_stateid
, nfs4_stateid
*delegation
, fmode_t fmode
)
974 struct nfs_inode
*nfsi
= NFS_I(state
->inode
);
975 struct nfs_delegation
*deleg_cur
;
978 fmode
&= (FMODE_READ
|FMODE_WRITE
);
981 deleg_cur
= rcu_dereference(nfsi
->delegation
);
982 if (deleg_cur
== NULL
)
985 spin_lock(&deleg_cur
->lock
);
986 if (nfsi
->delegation
!= deleg_cur
||
987 test_bit(NFS_DELEGATION_RETURNING
, &deleg_cur
->flags
) ||
988 (deleg_cur
->type
& fmode
) != fmode
)
989 goto no_delegation_unlock
;
991 if (delegation
== NULL
)
992 delegation
= &deleg_cur
->stateid
;
993 else if (!nfs4_stateid_match(&deleg_cur
->stateid
, delegation
))
994 goto no_delegation_unlock
;
996 nfs_mark_delegation_referenced(deleg_cur
);
997 __update_open_stateid(state
, open_stateid
, &deleg_cur
->stateid
, fmode
);
999 no_delegation_unlock
:
1000 spin_unlock(&deleg_cur
->lock
);
1004 if (!ret
&& open_stateid
!= NULL
) {
1005 __update_open_stateid(state
, open_stateid
, NULL
, fmode
);
1013 static void nfs4_return_incompatible_delegation(struct inode
*inode
, fmode_t fmode
)
1015 struct nfs_delegation
*delegation
;
1018 delegation
= rcu_dereference(NFS_I(inode
)->delegation
);
1019 if (delegation
== NULL
|| (delegation
->type
& fmode
) == fmode
) {
1024 nfs4_inode_return_delegation(inode
);
1027 static struct nfs4_state
*nfs4_try_open_cached(struct nfs4_opendata
*opendata
)
1029 struct nfs4_state
*state
= opendata
->state
;
1030 struct nfs_inode
*nfsi
= NFS_I(state
->inode
);
1031 struct nfs_delegation
*delegation
;
1032 int open_mode
= opendata
->o_arg
.open_flags
& (O_EXCL
|O_TRUNC
);
1033 fmode_t fmode
= opendata
->o_arg
.fmode
;
1034 nfs4_stateid stateid
;
1038 if (can_open_cached(state
, fmode
, open_mode
)) {
1039 spin_lock(&state
->owner
->so_lock
);
1040 if (can_open_cached(state
, fmode
, open_mode
)) {
1041 update_open_stateflags(state
, fmode
);
1042 spin_unlock(&state
->owner
->so_lock
);
1043 goto out_return_state
;
1045 spin_unlock(&state
->owner
->so_lock
);
1048 delegation
= rcu_dereference(nfsi
->delegation
);
1049 if (!can_open_delegated(delegation
, fmode
)) {
1053 /* Save the delegation */
1054 nfs4_stateid_copy(&stateid
, &delegation
->stateid
);
1056 ret
= nfs_may_open(state
->inode
, state
->owner
->so_cred
, open_mode
);
1061 /* Try to update the stateid using the delegation */
1062 if (update_open_stateid(state
, NULL
, &stateid
, fmode
))
1063 goto out_return_state
;
1066 return ERR_PTR(ret
);
1068 atomic_inc(&state
->count
);
1073 nfs4_opendata_check_deleg(struct nfs4_opendata
*data
, struct nfs4_state
*state
)
1075 struct nfs_client
*clp
= NFS_SERVER(state
->inode
)->nfs_client
;
1076 struct nfs_delegation
*delegation
;
1077 int delegation_flags
= 0;
1080 delegation
= rcu_dereference(NFS_I(state
->inode
)->delegation
);
1082 delegation_flags
= delegation
->flags
;
1084 if (data
->o_arg
.claim
== NFS4_OPEN_CLAIM_DELEGATE_CUR
) {
1085 pr_err_ratelimited("NFS: Broken NFSv4 server %s is "
1086 "returning a delegation for "
1087 "OPEN(CLAIM_DELEGATE_CUR)\n",
1089 } else if ((delegation_flags
& 1UL<<NFS_DELEGATION_NEED_RECLAIM
) == 0)
1090 nfs_inode_set_delegation(state
->inode
,
1091 data
->owner
->so_cred
,
1094 nfs_inode_reclaim_delegation(state
->inode
,
1095 data
->owner
->so_cred
,
1100 * Check the inode attributes against the CLAIM_PREVIOUS returned attributes
1101 * and update the nfs4_state.
1103 static struct nfs4_state
*
1104 _nfs4_opendata_reclaim_to_nfs4_state(struct nfs4_opendata
*data
)
1106 struct inode
*inode
= data
->state
->inode
;
1107 struct nfs4_state
*state
= data
->state
;
1110 if (!data
->rpc_done
) {
1111 ret
= data
->rpc_status
;
1116 if (!(data
->f_attr
.valid
& NFS_ATTR_FATTR_TYPE
) ||
1117 !(data
->f_attr
.valid
& NFS_ATTR_FATTR_FILEID
) ||
1118 !(data
->f_attr
.valid
& NFS_ATTR_FATTR_CHANGE
))
1122 state
= nfs4_get_open_state(inode
, data
->owner
);
1126 ret
= nfs_refresh_inode(inode
, &data
->f_attr
);
1130 if (data
->o_res
.delegation_type
!= 0)
1131 nfs4_opendata_check_deleg(data
, state
);
1132 update_open_stateid(state
, &data
->o_res
.stateid
, NULL
,
1137 return ERR_PTR(ret
);
1141 static struct nfs4_state
*
1142 _nfs4_opendata_to_nfs4_state(struct nfs4_opendata
*data
)
1144 struct inode
*inode
;
1145 struct nfs4_state
*state
= NULL
;
1148 if (!data
->rpc_done
) {
1149 state
= nfs4_try_open_cached(data
);
1154 if (!(data
->f_attr
.valid
& NFS_ATTR_FATTR
))
1156 inode
= nfs_fhget(data
->dir
->d_sb
, &data
->o_res
.fh
, &data
->f_attr
);
1157 ret
= PTR_ERR(inode
);
1161 state
= nfs4_get_open_state(inode
, data
->owner
);
1164 if (data
->o_res
.delegation_type
!= 0)
1165 nfs4_opendata_check_deleg(data
, state
);
1166 update_open_stateid(state
, &data
->o_res
.stateid
, NULL
,
1170 nfs_release_seqid(data
->o_arg
.seqid
);
1175 return ERR_PTR(ret
);
1178 static struct nfs4_state
*
1179 nfs4_opendata_to_nfs4_state(struct nfs4_opendata
*data
)
1181 if (data
->o_arg
.claim
== NFS4_OPEN_CLAIM_PREVIOUS
)
1182 return _nfs4_opendata_reclaim_to_nfs4_state(data
);
1183 return _nfs4_opendata_to_nfs4_state(data
);
1186 static struct nfs_open_context
*nfs4_state_find_open_context(struct nfs4_state
*state
)
1188 struct nfs_inode
*nfsi
= NFS_I(state
->inode
);
1189 struct nfs_open_context
*ctx
;
1191 spin_lock(&state
->inode
->i_lock
);
1192 list_for_each_entry(ctx
, &nfsi
->open_files
, list
) {
1193 if (ctx
->state
!= state
)
1195 get_nfs_open_context(ctx
);
1196 spin_unlock(&state
->inode
->i_lock
);
1199 spin_unlock(&state
->inode
->i_lock
);
1200 return ERR_PTR(-ENOENT
);
1203 static struct nfs4_opendata
*nfs4_open_recoverdata_alloc(struct nfs_open_context
*ctx
, struct nfs4_state
*state
)
1205 struct nfs4_opendata
*opendata
;
1207 opendata
= nfs4_opendata_alloc(ctx
->dentry
, state
->owner
, 0, 0, NULL
, GFP_NOFS
);
1208 if (opendata
== NULL
)
1209 return ERR_PTR(-ENOMEM
);
1210 opendata
->state
= state
;
1211 atomic_inc(&state
->count
);
1215 static int nfs4_open_recover_helper(struct nfs4_opendata
*opendata
, fmode_t fmode
, struct nfs4_state
**res
)
1217 struct nfs4_state
*newstate
;
1220 opendata
->o_arg
.open_flags
= 0;
1221 opendata
->o_arg
.fmode
= fmode
;
1222 memset(&opendata
->o_res
, 0, sizeof(opendata
->o_res
));
1223 memset(&opendata
->c_res
, 0, sizeof(opendata
->c_res
));
1224 nfs4_init_opendata_res(opendata
);
1225 ret
= _nfs4_recover_proc_open(opendata
);
1228 newstate
= nfs4_opendata_to_nfs4_state(opendata
);
1229 if (IS_ERR(newstate
))
1230 return PTR_ERR(newstate
);
1231 nfs4_close_state(newstate
, fmode
);
1236 static int nfs4_open_recover(struct nfs4_opendata
*opendata
, struct nfs4_state
*state
)
1238 struct nfs4_state
*newstate
;
1241 /* memory barrier prior to reading state->n_* */
1242 clear_bit(NFS_DELEGATED_STATE
, &state
->flags
);
1244 if (state
->n_rdwr
!= 0) {
1245 clear_bit(NFS_O_RDWR_STATE
, &state
->flags
);
1246 ret
= nfs4_open_recover_helper(opendata
, FMODE_READ
|FMODE_WRITE
, &newstate
);
1249 if (newstate
!= state
)
1252 if (state
->n_wronly
!= 0) {
1253 clear_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
1254 ret
= nfs4_open_recover_helper(opendata
, FMODE_WRITE
, &newstate
);
1257 if (newstate
!= state
)
1260 if (state
->n_rdonly
!= 0) {
1261 clear_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
1262 ret
= nfs4_open_recover_helper(opendata
, FMODE_READ
, &newstate
);
1265 if (newstate
!= state
)
1269 * We may have performed cached opens for all three recoveries.
1270 * Check if we need to update the current stateid.
1272 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) == 0 &&
1273 !nfs4_stateid_match(&state
->stateid
, &state
->open_stateid
)) {
1274 write_seqlock(&state
->seqlock
);
1275 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) == 0)
1276 nfs4_stateid_copy(&state
->stateid
, &state
->open_stateid
);
1277 write_sequnlock(&state
->seqlock
);
1284 * reclaim state on the server after a reboot.
1286 static int _nfs4_do_open_reclaim(struct nfs_open_context
*ctx
, struct nfs4_state
*state
)
1288 struct nfs_delegation
*delegation
;
1289 struct nfs4_opendata
*opendata
;
1290 fmode_t delegation_type
= 0;
1293 opendata
= nfs4_open_recoverdata_alloc(ctx
, state
);
1294 if (IS_ERR(opendata
))
1295 return PTR_ERR(opendata
);
1296 opendata
->o_arg
.claim
= NFS4_OPEN_CLAIM_PREVIOUS
;
1297 opendata
->o_arg
.fh
= NFS_FH(state
->inode
);
1299 delegation
= rcu_dereference(NFS_I(state
->inode
)->delegation
);
1300 if (delegation
!= NULL
&& test_bit(NFS_DELEGATION_NEED_RECLAIM
, &delegation
->flags
) != 0)
1301 delegation_type
= delegation
->type
;
1303 opendata
->o_arg
.u
.delegation_type
= delegation_type
;
1304 status
= nfs4_open_recover(opendata
, state
);
1305 nfs4_opendata_put(opendata
);
1309 static int nfs4_do_open_reclaim(struct nfs_open_context
*ctx
, struct nfs4_state
*state
)
1311 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
1312 struct nfs4_exception exception
= { };
1315 err
= _nfs4_do_open_reclaim(ctx
, state
);
1316 if (err
!= -NFS4ERR_DELAY
)
1318 nfs4_handle_exception(server
, err
, &exception
);
1319 } while (exception
.retry
);
1323 static int nfs4_open_reclaim(struct nfs4_state_owner
*sp
, struct nfs4_state
*state
)
1325 struct nfs_open_context
*ctx
;
1328 ctx
= nfs4_state_find_open_context(state
);
1330 return PTR_ERR(ctx
);
1331 ret
= nfs4_do_open_reclaim(ctx
, state
);
1332 put_nfs_open_context(ctx
);
1336 static int _nfs4_open_delegation_recall(struct nfs_open_context
*ctx
, struct nfs4_state
*state
, const nfs4_stateid
*stateid
)
1338 struct nfs4_opendata
*opendata
;
1341 opendata
= nfs4_open_recoverdata_alloc(ctx
, state
);
1342 if (IS_ERR(opendata
))
1343 return PTR_ERR(opendata
);
1344 opendata
->o_arg
.claim
= NFS4_OPEN_CLAIM_DELEGATE_CUR
;
1345 nfs4_stateid_copy(&opendata
->o_arg
.u
.delegation
, stateid
);
1346 ret
= nfs4_open_recover(opendata
, state
);
1347 nfs4_opendata_put(opendata
);
1351 int nfs4_open_delegation_recall(struct nfs_open_context
*ctx
, struct nfs4_state
*state
, const nfs4_stateid
*stateid
)
1353 struct nfs4_exception exception
= { };
1354 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
1357 err
= _nfs4_open_delegation_recall(ctx
, state
, stateid
);
1363 case -NFS4ERR_BADSESSION
:
1364 case -NFS4ERR_BADSLOT
:
1365 case -NFS4ERR_BAD_HIGH_SLOT
:
1366 case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION
:
1367 case -NFS4ERR_DEADSESSION
:
1368 set_bit(NFS_DELEGATED_STATE
, &state
->flags
);
1369 nfs4_schedule_session_recovery(server
->nfs_client
->cl_session
, err
);
1372 case -NFS4ERR_STALE_CLIENTID
:
1373 case -NFS4ERR_STALE_STATEID
:
1374 set_bit(NFS_DELEGATED_STATE
, &state
->flags
);
1375 case -NFS4ERR_EXPIRED
:
1376 /* Don't recall a delegation if it was lost */
1377 nfs4_schedule_lease_recovery(server
->nfs_client
);
1380 case -NFS4ERR_DELEG_REVOKED
:
1381 case -NFS4ERR_ADMIN_REVOKED
:
1382 case -NFS4ERR_BAD_STATEID
:
1383 nfs_inode_find_state_and_recover(state
->inode
,
1385 nfs4_schedule_stateid_recovery(server
, state
);
1390 set_bit(NFS_DELEGATED_STATE
, &state
->flags
);
1391 err
= nfs4_handle_exception(server
, err
, &exception
);
1392 } while (exception
.retry
);
1397 static void nfs4_open_confirm_done(struct rpc_task
*task
, void *calldata
)
1399 struct nfs4_opendata
*data
= calldata
;
1401 data
->rpc_status
= task
->tk_status
;
1402 if (data
->rpc_status
== 0) {
1403 nfs4_stateid_copy(&data
->o_res
.stateid
, &data
->c_res
.stateid
);
1404 nfs_confirm_seqid(&data
->owner
->so_seqid
, 0);
1405 renew_lease(data
->o_res
.server
, data
->timestamp
);
1410 static void nfs4_open_confirm_release(void *calldata
)
1412 struct nfs4_opendata
*data
= calldata
;
1413 struct nfs4_state
*state
= NULL
;
1415 /* If this request hasn't been cancelled, do nothing */
1416 if (data
->cancelled
== 0)
1418 /* In case of error, no cleanup! */
1419 if (!data
->rpc_done
)
1421 state
= nfs4_opendata_to_nfs4_state(data
);
1423 nfs4_close_state(state
, data
->o_arg
.fmode
);
1425 nfs4_opendata_put(data
);
1428 static const struct rpc_call_ops nfs4_open_confirm_ops
= {
1429 .rpc_call_done
= nfs4_open_confirm_done
,
1430 .rpc_release
= nfs4_open_confirm_release
,
1434 * Note: On error, nfs4_proc_open_confirm will free the struct nfs4_opendata
1436 static int _nfs4_proc_open_confirm(struct nfs4_opendata
*data
)
1438 struct nfs_server
*server
= NFS_SERVER(data
->dir
->d_inode
);
1439 struct rpc_task
*task
;
1440 struct rpc_message msg
= {
1441 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_OPEN_CONFIRM
],
1442 .rpc_argp
= &data
->c_arg
,
1443 .rpc_resp
= &data
->c_res
,
1444 .rpc_cred
= data
->owner
->so_cred
,
1446 struct rpc_task_setup task_setup_data
= {
1447 .rpc_client
= server
->client
,
1448 .rpc_message
= &msg
,
1449 .callback_ops
= &nfs4_open_confirm_ops
,
1450 .callback_data
= data
,
1451 .workqueue
= nfsiod_workqueue
,
1452 .flags
= RPC_TASK_ASYNC
,
1456 kref_get(&data
->kref
);
1458 data
->rpc_status
= 0;
1459 data
->timestamp
= jiffies
;
1460 task
= rpc_run_task(&task_setup_data
);
1462 return PTR_ERR(task
);
1463 status
= nfs4_wait_for_completion_rpc_task(task
);
1465 data
->cancelled
= 1;
1468 status
= data
->rpc_status
;
1473 static void nfs4_open_prepare(struct rpc_task
*task
, void *calldata
)
1475 struct nfs4_opendata
*data
= calldata
;
1476 struct nfs4_state_owner
*sp
= data
->owner
;
1478 if (nfs_wait_on_sequence(data
->o_arg
.seqid
, task
) != 0)
1481 * Check if we still need to send an OPEN call, or if we can use
1482 * a delegation instead.
1484 if (data
->state
!= NULL
) {
1485 struct nfs_delegation
*delegation
;
1487 if (can_open_cached(data
->state
, data
->o_arg
.fmode
, data
->o_arg
.open_flags
))
1490 delegation
= rcu_dereference(NFS_I(data
->state
->inode
)->delegation
);
1491 if (data
->o_arg
.claim
!= NFS4_OPEN_CLAIM_DELEGATE_CUR
&&
1492 can_open_delegated(delegation
, data
->o_arg
.fmode
))
1493 goto unlock_no_action
;
1496 /* Update client id. */
1497 data
->o_arg
.clientid
= sp
->so_server
->nfs_client
->cl_clientid
;
1498 if (data
->o_arg
.claim
== NFS4_OPEN_CLAIM_PREVIOUS
) {
1499 task
->tk_msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_OPEN_NOATTR
];
1500 data
->o_arg
.open_bitmap
= &nfs4_open_noattr_bitmap
[0];
1501 nfs_copy_fh(&data
->o_res
.fh
, data
->o_arg
.fh
);
1503 data
->timestamp
= jiffies
;
1504 if (nfs4_setup_sequence(data
->o_arg
.server
,
1505 &data
->o_arg
.seq_args
,
1506 &data
->o_res
.seq_res
,
1508 nfs_release_seqid(data
->o_arg
.seqid
);
1513 task
->tk_action
= NULL
;
1515 nfs4_sequence_done(task
, &data
->o_res
.seq_res
);
1518 static void nfs4_open_done(struct rpc_task
*task
, void *calldata
)
1520 struct nfs4_opendata
*data
= calldata
;
1522 data
->rpc_status
= task
->tk_status
;
1524 if (!nfs4_sequence_done(task
, &data
->o_res
.seq_res
))
1527 if (task
->tk_status
== 0) {
1528 if (data
->o_res
.f_attr
->valid
& NFS_ATTR_FATTR_TYPE
) {
1529 switch (data
->o_res
.f_attr
->mode
& S_IFMT
) {
1533 data
->rpc_status
= -ELOOP
;
1536 data
->rpc_status
= -EISDIR
;
1539 data
->rpc_status
= -ENOTDIR
;
1542 renew_lease(data
->o_res
.server
, data
->timestamp
);
1543 if (!(data
->o_res
.rflags
& NFS4_OPEN_RESULT_CONFIRM
))
1544 nfs_confirm_seqid(&data
->owner
->so_seqid
, 0);
1549 static void nfs4_open_release(void *calldata
)
1551 struct nfs4_opendata
*data
= calldata
;
1552 struct nfs4_state
*state
= NULL
;
1554 /* If this request hasn't been cancelled, do nothing */
1555 if (data
->cancelled
== 0)
1557 /* In case of error, no cleanup! */
1558 if (data
->rpc_status
!= 0 || !data
->rpc_done
)
1560 /* In case we need an open_confirm, no cleanup! */
1561 if (data
->o_res
.rflags
& NFS4_OPEN_RESULT_CONFIRM
)
1563 state
= nfs4_opendata_to_nfs4_state(data
);
1565 nfs4_close_state(state
, data
->o_arg
.fmode
);
1567 nfs4_opendata_put(data
);
1570 static const struct rpc_call_ops nfs4_open_ops
= {
1571 .rpc_call_prepare
= nfs4_open_prepare
,
1572 .rpc_call_done
= nfs4_open_done
,
1573 .rpc_release
= nfs4_open_release
,
1576 static int nfs4_run_open_task(struct nfs4_opendata
*data
, int isrecover
)
1578 struct inode
*dir
= data
->dir
->d_inode
;
1579 struct nfs_server
*server
= NFS_SERVER(dir
);
1580 struct nfs_openargs
*o_arg
= &data
->o_arg
;
1581 struct nfs_openres
*o_res
= &data
->o_res
;
1582 struct rpc_task
*task
;
1583 struct rpc_message msg
= {
1584 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_OPEN
],
1587 .rpc_cred
= data
->owner
->so_cred
,
1589 struct rpc_task_setup task_setup_data
= {
1590 .rpc_client
= server
->client
,
1591 .rpc_message
= &msg
,
1592 .callback_ops
= &nfs4_open_ops
,
1593 .callback_data
= data
,
1594 .workqueue
= nfsiod_workqueue
,
1595 .flags
= RPC_TASK_ASYNC
,
1599 nfs41_init_sequence(&o_arg
->seq_args
, &o_res
->seq_res
, 1);
1600 kref_get(&data
->kref
);
1602 data
->rpc_status
= 0;
1603 data
->cancelled
= 0;
1605 nfs4_set_sequence_privileged(&o_arg
->seq_args
);
1606 task
= rpc_run_task(&task_setup_data
);
1608 return PTR_ERR(task
);
1609 status
= nfs4_wait_for_completion_rpc_task(task
);
1611 data
->cancelled
= 1;
1614 status
= data
->rpc_status
;
1620 static int _nfs4_recover_proc_open(struct nfs4_opendata
*data
)
1622 struct inode
*dir
= data
->dir
->d_inode
;
1623 struct nfs_openres
*o_res
= &data
->o_res
;
1626 status
= nfs4_run_open_task(data
, 1);
1627 if (status
!= 0 || !data
->rpc_done
)
1630 nfs_fattr_map_and_free_names(NFS_SERVER(dir
), &data
->f_attr
);
1632 if (o_res
->rflags
& NFS4_OPEN_RESULT_CONFIRM
) {
1633 status
= _nfs4_proc_open_confirm(data
);
1641 static int nfs4_opendata_access(struct rpc_cred
*cred
,
1642 struct nfs4_opendata
*opendata
,
1643 struct nfs4_state
*state
, fmode_t fmode
,
1646 struct nfs_access_entry cache
;
1649 /* access call failed or for some reason the server doesn't
1650 * support any access modes -- defer access call until later */
1651 if (opendata
->o_res
.access_supported
== 0)
1655 /* don't check MAY_WRITE - a newly created file may not have
1656 * write mode bits, but POSIX allows the creating process to write.
1657 * use openflags to check for exec, because fmode won't
1658 * always have FMODE_EXEC set when file open for exec. */
1659 if (openflags
& __FMODE_EXEC
) {
1660 /* ONLY check for exec rights */
1662 } else if (fmode
& FMODE_READ
)
1666 cache
.jiffies
= jiffies
;
1667 nfs_access_set_mask(&cache
, opendata
->o_res
.access_result
);
1668 nfs_access_add_cache(state
->inode
, &cache
);
1670 if ((mask
& ~cache
.mask
& (MAY_READ
| MAY_EXEC
)) == 0)
1673 /* even though OPEN succeeded, access is denied. Close the file */
1674 nfs4_close_state(state
, fmode
);
1679 * Note: On error, nfs4_proc_open will free the struct nfs4_opendata
1681 static int _nfs4_proc_open(struct nfs4_opendata
*data
)
1683 struct inode
*dir
= data
->dir
->d_inode
;
1684 struct nfs_server
*server
= NFS_SERVER(dir
);
1685 struct nfs_openargs
*o_arg
= &data
->o_arg
;
1686 struct nfs_openres
*o_res
= &data
->o_res
;
1689 status
= nfs4_run_open_task(data
, 0);
1690 if (!data
->rpc_done
)
1693 if (status
== -NFS4ERR_BADNAME
&&
1694 !(o_arg
->open_flags
& O_CREAT
))
1699 nfs_fattr_map_and_free_names(server
, &data
->f_attr
);
1701 if (o_arg
->open_flags
& O_CREAT
)
1702 update_changeattr(dir
, &o_res
->cinfo
);
1703 if ((o_res
->rflags
& NFS4_OPEN_RESULT_LOCKTYPE_POSIX
) == 0)
1704 server
->caps
&= ~NFS_CAP_POSIX_LOCK
;
1705 if(o_res
->rflags
& NFS4_OPEN_RESULT_CONFIRM
) {
1706 status
= _nfs4_proc_open_confirm(data
);
1710 if (!(o_res
->f_attr
->valid
& NFS_ATTR_FATTR
))
1711 _nfs4_proc_getattr(server
, &o_res
->fh
, o_res
->f_attr
);
1715 static int nfs4_recover_expired_lease(struct nfs_server
*server
)
1717 return nfs4_client_recover_expired_lease(server
->nfs_client
);
1722 * reclaim state on the server after a network partition.
1723 * Assumes caller holds the appropriate lock
1725 static int _nfs4_open_expired(struct nfs_open_context
*ctx
, struct nfs4_state
*state
)
1727 struct nfs4_opendata
*opendata
;
1730 opendata
= nfs4_open_recoverdata_alloc(ctx
, state
);
1731 if (IS_ERR(opendata
))
1732 return PTR_ERR(opendata
);
1733 ret
= nfs4_open_recover(opendata
, state
);
1735 d_drop(ctx
->dentry
);
1736 nfs4_opendata_put(opendata
);
1740 static int nfs4_do_open_expired(struct nfs_open_context
*ctx
, struct nfs4_state
*state
)
1742 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
1743 struct nfs4_exception exception
= { };
1747 err
= _nfs4_open_expired(ctx
, state
);
1751 case -NFS4ERR_GRACE
:
1752 case -NFS4ERR_DELAY
:
1753 nfs4_handle_exception(server
, err
, &exception
);
1756 } while (exception
.retry
);
1761 static int nfs4_open_expired(struct nfs4_state_owner
*sp
, struct nfs4_state
*state
)
1763 struct nfs_open_context
*ctx
;
1766 ctx
= nfs4_state_find_open_context(state
);
1768 return PTR_ERR(ctx
);
1769 ret
= nfs4_do_open_expired(ctx
, state
);
1770 put_nfs_open_context(ctx
);
1774 #if defined(CONFIG_NFS_V4_1)
1775 static void nfs41_clear_delegation_stateid(struct nfs4_state
*state
)
1777 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
1778 nfs4_stateid
*stateid
= &state
->stateid
;
1781 /* If a state reset has been done, test_stateid is unneeded */
1782 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) == 0)
1785 status
= nfs41_test_stateid(server
, stateid
);
1786 if (status
!= NFS_OK
) {
1787 /* Free the stateid unless the server explicitly
1788 * informs us the stateid is unrecognized. */
1789 if (status
!= -NFS4ERR_BAD_STATEID
)
1790 nfs41_free_stateid(server
, stateid
);
1791 nfs_remove_bad_delegation(state
->inode
);
1793 write_seqlock(&state
->seqlock
);
1794 nfs4_stateid_copy(&state
->stateid
, &state
->open_stateid
);
1795 write_sequnlock(&state
->seqlock
);
1796 clear_bit(NFS_DELEGATED_STATE
, &state
->flags
);
1801 * nfs41_check_open_stateid - possibly free an open stateid
1803 * @state: NFSv4 state for an inode
1805 * Returns NFS_OK if recovery for this stateid is now finished.
1806 * Otherwise a negative NFS4ERR value is returned.
1808 static int nfs41_check_open_stateid(struct nfs4_state
*state
)
1810 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
1811 nfs4_stateid
*stateid
= &state
->open_stateid
;
1814 /* If a state reset has been done, test_stateid is unneeded */
1815 if ((test_bit(NFS_O_RDONLY_STATE
, &state
->flags
) == 0) &&
1816 (test_bit(NFS_O_WRONLY_STATE
, &state
->flags
) == 0) &&
1817 (test_bit(NFS_O_RDWR_STATE
, &state
->flags
) == 0))
1818 return -NFS4ERR_BAD_STATEID
;
1820 status
= nfs41_test_stateid(server
, stateid
);
1821 if (status
!= NFS_OK
) {
1822 /* Free the stateid unless the server explicitly
1823 * informs us the stateid is unrecognized. */
1824 if (status
!= -NFS4ERR_BAD_STATEID
)
1825 nfs41_free_stateid(server
, stateid
);
1827 clear_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
1828 clear_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
1829 clear_bit(NFS_O_RDWR_STATE
, &state
->flags
);
1834 static int nfs41_open_expired(struct nfs4_state_owner
*sp
, struct nfs4_state
*state
)
1838 nfs41_clear_delegation_stateid(state
);
1839 status
= nfs41_check_open_stateid(state
);
1840 if (status
!= NFS_OK
)
1841 status
= nfs4_open_expired(sp
, state
);
1847 * on an EXCLUSIVE create, the server should send back a bitmask with FATTR4-*
1848 * fields corresponding to attributes that were used to store the verifier.
1849 * Make sure we clobber those fields in the later setattr call
1851 static inline void nfs4_exclusive_attrset(struct nfs4_opendata
*opendata
, struct iattr
*sattr
)
1853 if ((opendata
->o_res
.attrset
[1] & FATTR4_WORD1_TIME_ACCESS
) &&
1854 !(sattr
->ia_valid
& ATTR_ATIME_SET
))
1855 sattr
->ia_valid
|= ATTR_ATIME
;
1857 if ((opendata
->o_res
.attrset
[1] & FATTR4_WORD1_TIME_MODIFY
) &&
1858 !(sattr
->ia_valid
& ATTR_MTIME_SET
))
1859 sattr
->ia_valid
|= ATTR_MTIME
;
1862 static int _nfs4_open_and_get_state(struct nfs4_opendata
*opendata
,
1865 struct nfs4_state
**res
)
1867 struct nfs4_state_owner
*sp
= opendata
->owner
;
1868 struct nfs_server
*server
= sp
->so_server
;
1869 struct nfs4_state
*state
;
1873 seq
= raw_seqcount_begin(&sp
->so_reclaim_seqcount
);
1875 ret
= _nfs4_proc_open(opendata
);
1879 state
= nfs4_opendata_to_nfs4_state(opendata
);
1880 ret
= PTR_ERR(state
);
1883 if (server
->caps
& NFS_CAP_POSIX_LOCK
)
1884 set_bit(NFS_STATE_POSIX_LOCKS
, &state
->flags
);
1886 ret
= nfs4_opendata_access(sp
->so_cred
, opendata
, state
, fmode
, flags
);
1890 if (read_seqcount_retry(&sp
->so_reclaim_seqcount
, seq
)) {
1891 nfs4_schedule_stateid_recovery(server
, state
);
1892 nfs4_wait_clnt_recover(server
->nfs_client
);
1900 * Returns a referenced nfs4_state
1902 static int _nfs4_do_open(struct inode
*dir
,
1903 struct dentry
*dentry
,
1906 struct iattr
*sattr
,
1907 struct rpc_cred
*cred
,
1908 struct nfs4_state
**res
,
1909 struct nfs4_threshold
**ctx_th
)
1911 struct nfs4_state_owner
*sp
;
1912 struct nfs4_state
*state
= NULL
;
1913 struct nfs_server
*server
= NFS_SERVER(dir
);
1914 struct nfs4_opendata
*opendata
;
1917 /* Protect against reboot recovery conflicts */
1919 sp
= nfs4_get_state_owner(server
, cred
, GFP_KERNEL
);
1921 dprintk("nfs4_do_open: nfs4_get_state_owner failed!\n");
1924 status
= nfs4_recover_expired_lease(server
);
1926 goto err_put_state_owner
;
1927 if (dentry
->d_inode
!= NULL
)
1928 nfs4_return_incompatible_delegation(dentry
->d_inode
, fmode
);
1930 opendata
= nfs4_opendata_alloc(dentry
, sp
, fmode
, flags
, sattr
, GFP_KERNEL
);
1931 if (opendata
== NULL
)
1932 goto err_put_state_owner
;
1934 if (ctx_th
&& server
->attr_bitmask
[2] & FATTR4_WORD2_MDSTHRESHOLD
) {
1935 opendata
->f_attr
.mdsthreshold
= pnfs_mdsthreshold_alloc();
1936 if (!opendata
->f_attr
.mdsthreshold
)
1937 goto err_opendata_put
;
1938 opendata
->o_arg
.open_bitmap
= &nfs4_pnfs_open_bitmap
[0];
1940 if (dentry
->d_inode
!= NULL
)
1941 opendata
->state
= nfs4_get_open_state(dentry
->d_inode
, sp
);
1943 status
= _nfs4_open_and_get_state(opendata
, fmode
, flags
, &state
);
1945 goto err_opendata_put
;
1947 if (opendata
->o_arg
.open_flags
& O_EXCL
) {
1948 nfs4_exclusive_attrset(opendata
, sattr
);
1950 nfs_fattr_init(opendata
->o_res
.f_attr
);
1951 status
= nfs4_do_setattr(state
->inode
, cred
,
1952 opendata
->o_res
.f_attr
, sattr
,
1955 nfs_setattr_update_inode(state
->inode
, sattr
);
1956 nfs_post_op_update_inode(state
->inode
, opendata
->o_res
.f_attr
);
1959 if (pnfs_use_threshold(ctx_th
, opendata
->f_attr
.mdsthreshold
, server
))
1960 *ctx_th
= opendata
->f_attr
.mdsthreshold
;
1962 kfree(opendata
->f_attr
.mdsthreshold
);
1963 opendata
->f_attr
.mdsthreshold
= NULL
;
1965 nfs4_opendata_put(opendata
);
1966 nfs4_put_state_owner(sp
);
1970 kfree(opendata
->f_attr
.mdsthreshold
);
1971 nfs4_opendata_put(opendata
);
1972 err_put_state_owner
:
1973 nfs4_put_state_owner(sp
);
1980 static struct nfs4_state
*nfs4_do_open(struct inode
*dir
,
1981 struct dentry
*dentry
,
1984 struct iattr
*sattr
,
1985 struct rpc_cred
*cred
,
1986 struct nfs4_threshold
**ctx_th
)
1988 struct nfs4_exception exception
= { };
1989 struct nfs4_state
*res
;
1992 fmode
&= FMODE_READ
|FMODE_WRITE
|FMODE_EXEC
;
1994 status
= _nfs4_do_open(dir
, dentry
, fmode
, flags
, sattr
, cred
,
1998 /* NOTE: BAD_SEQID means the server and client disagree about the
1999 * book-keeping w.r.t. state-changing operations
2000 * (OPEN/CLOSE/LOCK/LOCKU...)
2001 * It is actually a sign of a bug on the client or on the server.
2003 * If we receive a BAD_SEQID error in the particular case of
2004 * doing an OPEN, we assume that nfs_increment_open_seqid() will
2005 * have unhashed the old state_owner for us, and that we can
2006 * therefore safely retry using a new one. We should still warn
2007 * the user though...
2009 if (status
== -NFS4ERR_BAD_SEQID
) {
2010 pr_warn_ratelimited("NFS: v4 server %s "
2011 " returned a bad sequence-id error!\n",
2012 NFS_SERVER(dir
)->nfs_client
->cl_hostname
);
2013 exception
.retry
= 1;
2017 * BAD_STATEID on OPEN means that the server cancelled our
2018 * state before it received the OPEN_CONFIRM.
2019 * Recover by retrying the request as per the discussion
2020 * on Page 181 of RFC3530.
2022 if (status
== -NFS4ERR_BAD_STATEID
) {
2023 exception
.retry
= 1;
2026 if (status
== -EAGAIN
) {
2027 /* We must have found a delegation */
2028 exception
.retry
= 1;
2031 res
= ERR_PTR(nfs4_handle_exception(NFS_SERVER(dir
),
2032 status
, &exception
));
2033 } while (exception
.retry
);
2037 static int _nfs4_do_setattr(struct inode
*inode
, struct rpc_cred
*cred
,
2038 struct nfs_fattr
*fattr
, struct iattr
*sattr
,
2039 struct nfs4_state
*state
)
2041 struct nfs_server
*server
= NFS_SERVER(inode
);
2042 struct nfs_setattrargs arg
= {
2043 .fh
= NFS_FH(inode
),
2046 .bitmask
= server
->attr_bitmask
,
2048 struct nfs_setattrres res
= {
2052 struct rpc_message msg
= {
2053 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETATTR
],
2058 unsigned long timestamp
= jiffies
;
2061 nfs_fattr_init(fattr
);
2063 if (state
!= NULL
&& nfs4_valid_open_stateid(state
)) {
2064 struct nfs_lockowner lockowner
= {
2065 .l_owner
= current
->files
,
2066 .l_pid
= current
->tgid
,
2068 nfs4_select_rw_stateid(&arg
.stateid
, state
, FMODE_WRITE
,
2070 } else if (nfs4_copy_delegation_stateid(&arg
.stateid
, inode
,
2072 /* Use that stateid */
2074 nfs4_stateid_copy(&arg
.stateid
, &zero_stateid
);
2076 status
= nfs4_call_sync(server
->client
, server
, &msg
, &arg
.seq_args
, &res
.seq_res
, 1);
2077 if (status
== 0 && state
!= NULL
)
2078 renew_lease(server
, timestamp
);
2082 static int nfs4_do_setattr(struct inode
*inode
, struct rpc_cred
*cred
,
2083 struct nfs_fattr
*fattr
, struct iattr
*sattr
,
2084 struct nfs4_state
*state
)
2086 struct nfs_server
*server
= NFS_SERVER(inode
);
2087 struct nfs4_exception exception
= {
2093 err
= _nfs4_do_setattr(inode
, cred
, fattr
, sattr
, state
);
2095 case -NFS4ERR_OPENMODE
:
2096 if (state
&& !(state
->state
& FMODE_WRITE
)) {
2098 if (sattr
->ia_valid
& ATTR_OPEN
)
2103 err
= nfs4_handle_exception(server
, err
, &exception
);
2104 } while (exception
.retry
);
2109 struct nfs4_closedata
{
2110 struct inode
*inode
;
2111 struct nfs4_state
*state
;
2112 struct nfs_closeargs arg
;
2113 struct nfs_closeres res
;
2114 struct nfs_fattr fattr
;
2115 unsigned long timestamp
;
2120 static void nfs4_free_closedata(void *data
)
2122 struct nfs4_closedata
*calldata
= data
;
2123 struct nfs4_state_owner
*sp
= calldata
->state
->owner
;
2124 struct super_block
*sb
= calldata
->state
->inode
->i_sb
;
2127 pnfs_roc_release(calldata
->state
->inode
);
2128 nfs4_put_open_state(calldata
->state
);
2129 nfs_free_seqid(calldata
->arg
.seqid
);
2130 nfs4_put_state_owner(sp
);
2131 nfs_sb_deactive(sb
);
2135 static void nfs4_close_clear_stateid_flags(struct nfs4_state
*state
,
2138 spin_lock(&state
->owner
->so_lock
);
2139 if (!(fmode
& FMODE_READ
))
2140 clear_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
2141 if (!(fmode
& FMODE_WRITE
))
2142 clear_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
2143 clear_bit(NFS_O_RDWR_STATE
, &state
->flags
);
2144 spin_unlock(&state
->owner
->so_lock
);
2147 static void nfs4_close_done(struct rpc_task
*task
, void *data
)
2149 struct nfs4_closedata
*calldata
= data
;
2150 struct nfs4_state
*state
= calldata
->state
;
2151 struct nfs_server
*server
= NFS_SERVER(calldata
->inode
);
2153 dprintk("%s: begin!\n", __func__
);
2154 if (!nfs4_sequence_done(task
, &calldata
->res
.seq_res
))
2156 /* hmm. we are done with the inode, and in the process of freeing
2157 * the state_owner. we keep this around to process errors
2159 switch (task
->tk_status
) {
2162 pnfs_roc_set_barrier(state
->inode
,
2163 calldata
->roc_barrier
);
2164 nfs_set_open_stateid(state
, &calldata
->res
.stateid
, 0);
2165 renew_lease(server
, calldata
->timestamp
);
2166 nfs4_close_clear_stateid_flags(state
,
2167 calldata
->arg
.fmode
);
2169 case -NFS4ERR_STALE_STATEID
:
2170 case -NFS4ERR_OLD_STATEID
:
2171 case -NFS4ERR_BAD_STATEID
:
2172 case -NFS4ERR_EXPIRED
:
2173 if (calldata
->arg
.fmode
== 0)
2176 if (nfs4_async_handle_error(task
, server
, state
) == -EAGAIN
)
2177 rpc_restart_call_prepare(task
);
2179 nfs_release_seqid(calldata
->arg
.seqid
);
2180 nfs_refresh_inode(calldata
->inode
, calldata
->res
.fattr
);
2181 dprintk("%s: done, ret = %d!\n", __func__
, task
->tk_status
);
2184 static void nfs4_close_prepare(struct rpc_task
*task
, void *data
)
2186 struct nfs4_closedata
*calldata
= data
;
2187 struct nfs4_state
*state
= calldata
->state
;
2188 struct inode
*inode
= calldata
->inode
;
2191 dprintk("%s: begin!\n", __func__
);
2192 if (nfs_wait_on_sequence(calldata
->arg
.seqid
, task
) != 0)
2195 task
->tk_msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_OPEN_DOWNGRADE
];
2196 calldata
->arg
.fmode
= FMODE_READ
|FMODE_WRITE
;
2197 spin_lock(&state
->owner
->so_lock
);
2198 /* Calculate the change in open mode */
2199 if (state
->n_rdwr
== 0) {
2200 if (state
->n_rdonly
== 0) {
2201 call_close
|= test_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
2202 call_close
|= test_bit(NFS_O_RDWR_STATE
, &state
->flags
);
2203 calldata
->arg
.fmode
&= ~FMODE_READ
;
2205 if (state
->n_wronly
== 0) {
2206 call_close
|= test_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
2207 call_close
|= test_bit(NFS_O_RDWR_STATE
, &state
->flags
);
2208 calldata
->arg
.fmode
&= ~FMODE_WRITE
;
2211 if (!nfs4_valid_open_stateid(state
))
2213 spin_unlock(&state
->owner
->so_lock
);
2216 /* Note: exit _without_ calling nfs4_close_done */
2220 if (calldata
->arg
.fmode
== 0) {
2221 task
->tk_msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_CLOSE
];
2222 if (calldata
->roc
&&
2223 pnfs_roc_drain(inode
, &calldata
->roc_barrier
, task
))
2227 nfs_fattr_init(calldata
->res
.fattr
);
2228 calldata
->timestamp
= jiffies
;
2229 if (nfs4_setup_sequence(NFS_SERVER(inode
),
2230 &calldata
->arg
.seq_args
,
2231 &calldata
->res
.seq_res
,
2233 nfs_release_seqid(calldata
->arg
.seqid
);
2234 dprintk("%s: done!\n", __func__
);
2237 task
->tk_action
= NULL
;
2239 nfs4_sequence_done(task
, &calldata
->res
.seq_res
);
2242 static const struct rpc_call_ops nfs4_close_ops
= {
2243 .rpc_call_prepare
= nfs4_close_prepare
,
2244 .rpc_call_done
= nfs4_close_done
,
2245 .rpc_release
= nfs4_free_closedata
,
2249 * It is possible for data to be read/written from a mem-mapped file
2250 * after the sys_close call (which hits the vfs layer as a flush).
2251 * This means that we can't safely call nfsv4 close on a file until
2252 * the inode is cleared. This in turn means that we are not good
2253 * NFSv4 citizens - we do not indicate to the server to update the file's
2254 * share state even when we are done with one of the three share
2255 * stateid's in the inode.
2257 * NOTE: Caller must be holding the sp->so_owner semaphore!
2259 int nfs4_do_close(struct nfs4_state
*state
, gfp_t gfp_mask
, int wait
)
2261 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
2262 struct nfs4_closedata
*calldata
;
2263 struct nfs4_state_owner
*sp
= state
->owner
;
2264 struct rpc_task
*task
;
2265 struct rpc_message msg
= {
2266 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_CLOSE
],
2267 .rpc_cred
= state
->owner
->so_cred
,
2269 struct rpc_task_setup task_setup_data
= {
2270 .rpc_client
= server
->client
,
2271 .rpc_message
= &msg
,
2272 .callback_ops
= &nfs4_close_ops
,
2273 .workqueue
= nfsiod_workqueue
,
2274 .flags
= RPC_TASK_ASYNC
,
2276 int status
= -ENOMEM
;
2278 calldata
= kzalloc(sizeof(*calldata
), gfp_mask
);
2279 if (calldata
== NULL
)
2281 nfs41_init_sequence(&calldata
->arg
.seq_args
, &calldata
->res
.seq_res
, 1);
2282 calldata
->inode
= state
->inode
;
2283 calldata
->state
= state
;
2284 calldata
->arg
.fh
= NFS_FH(state
->inode
);
2285 calldata
->arg
.stateid
= &state
->open_stateid
;
2286 /* Serialization for the sequence id */
2287 calldata
->arg
.seqid
= nfs_alloc_seqid(&state
->owner
->so_seqid
, gfp_mask
);
2288 if (calldata
->arg
.seqid
== NULL
)
2289 goto out_free_calldata
;
2290 calldata
->arg
.fmode
= 0;
2291 calldata
->arg
.bitmask
= server
->cache_consistency_bitmask
;
2292 calldata
->res
.fattr
= &calldata
->fattr
;
2293 calldata
->res
.seqid
= calldata
->arg
.seqid
;
2294 calldata
->res
.server
= server
;
2295 calldata
->roc
= pnfs_roc(state
->inode
);
2296 nfs_sb_active(calldata
->inode
->i_sb
);
2298 msg
.rpc_argp
= &calldata
->arg
;
2299 msg
.rpc_resp
= &calldata
->res
;
2300 task_setup_data
.callback_data
= calldata
;
2301 task
= rpc_run_task(&task_setup_data
);
2303 return PTR_ERR(task
);
2306 status
= rpc_wait_for_completion_task(task
);
2312 nfs4_put_open_state(state
);
2313 nfs4_put_state_owner(sp
);
2317 static struct inode
*
2318 nfs4_atomic_open(struct inode
*dir
, struct nfs_open_context
*ctx
, int open_flags
, struct iattr
*attr
)
2320 struct nfs4_state
*state
;
2322 /* Protect against concurrent sillydeletes */
2323 state
= nfs4_do_open(dir
, ctx
->dentry
, ctx
->mode
, open_flags
, attr
,
2324 ctx
->cred
, &ctx
->mdsthreshold
);
2326 return ERR_CAST(state
);
2328 return igrab(state
->inode
);
2331 static void nfs4_close_context(struct nfs_open_context
*ctx
, int is_sync
)
2333 if (ctx
->state
== NULL
)
2336 nfs4_close_sync(ctx
->state
, ctx
->mode
);
2338 nfs4_close_state(ctx
->state
, ctx
->mode
);
2341 static int _nfs4_server_capabilities(struct nfs_server
*server
, struct nfs_fh
*fhandle
)
2343 struct nfs4_server_caps_arg args
= {
2346 struct nfs4_server_caps_res res
= {};
2347 struct rpc_message msg
= {
2348 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SERVER_CAPS
],
2354 status
= nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
2356 memcpy(server
->attr_bitmask
, res
.attr_bitmask
, sizeof(server
->attr_bitmask
));
2357 server
->caps
&= ~(NFS_CAP_ACLS
|NFS_CAP_HARDLINKS
|
2358 NFS_CAP_SYMLINKS
|NFS_CAP_FILEID
|
2359 NFS_CAP_MODE
|NFS_CAP_NLINK
|NFS_CAP_OWNER
|
2360 NFS_CAP_OWNER_GROUP
|NFS_CAP_ATIME
|
2361 NFS_CAP_CTIME
|NFS_CAP_MTIME
);
2362 if (res
.attr_bitmask
[0] & FATTR4_WORD0_ACL
)
2363 server
->caps
|= NFS_CAP_ACLS
;
2364 if (res
.has_links
!= 0)
2365 server
->caps
|= NFS_CAP_HARDLINKS
;
2366 if (res
.has_symlinks
!= 0)
2367 server
->caps
|= NFS_CAP_SYMLINKS
;
2368 if (res
.attr_bitmask
[0] & FATTR4_WORD0_FILEID
)
2369 server
->caps
|= NFS_CAP_FILEID
;
2370 if (res
.attr_bitmask
[1] & FATTR4_WORD1_MODE
)
2371 server
->caps
|= NFS_CAP_MODE
;
2372 if (res
.attr_bitmask
[1] & FATTR4_WORD1_NUMLINKS
)
2373 server
->caps
|= NFS_CAP_NLINK
;
2374 if (res
.attr_bitmask
[1] & FATTR4_WORD1_OWNER
)
2375 server
->caps
|= NFS_CAP_OWNER
;
2376 if (res
.attr_bitmask
[1] & FATTR4_WORD1_OWNER_GROUP
)
2377 server
->caps
|= NFS_CAP_OWNER_GROUP
;
2378 if (res
.attr_bitmask
[1] & FATTR4_WORD1_TIME_ACCESS
)
2379 server
->caps
|= NFS_CAP_ATIME
;
2380 if (res
.attr_bitmask
[1] & FATTR4_WORD1_TIME_METADATA
)
2381 server
->caps
|= NFS_CAP_CTIME
;
2382 if (res
.attr_bitmask
[1] & FATTR4_WORD1_TIME_MODIFY
)
2383 server
->caps
|= NFS_CAP_MTIME
;
2385 memcpy(server
->cache_consistency_bitmask
, res
.attr_bitmask
, sizeof(server
->cache_consistency_bitmask
));
2386 server
->cache_consistency_bitmask
[0] &= FATTR4_WORD0_CHANGE
|FATTR4_WORD0_SIZE
;
2387 server
->cache_consistency_bitmask
[1] &= FATTR4_WORD1_TIME_METADATA
|FATTR4_WORD1_TIME_MODIFY
;
2388 server
->acl_bitmask
= res
.acl_bitmask
;
2389 server
->fh_expire_type
= res
.fh_expire_type
;
2395 int nfs4_server_capabilities(struct nfs_server
*server
, struct nfs_fh
*fhandle
)
2397 struct nfs4_exception exception
= { };
2400 err
= nfs4_handle_exception(server
,
2401 _nfs4_server_capabilities(server
, fhandle
),
2403 } while (exception
.retry
);
2407 static int _nfs4_lookup_root(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
2408 struct nfs_fsinfo
*info
)
2410 struct nfs4_lookup_root_arg args
= {
2411 .bitmask
= nfs4_fattr_bitmap
,
2413 struct nfs4_lookup_res res
= {
2415 .fattr
= info
->fattr
,
2418 struct rpc_message msg
= {
2419 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOOKUP_ROOT
],
2424 nfs_fattr_init(info
->fattr
);
2425 return nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
2428 static int nfs4_lookup_root(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
2429 struct nfs_fsinfo
*info
)
2431 struct nfs4_exception exception
= { };
2434 err
= _nfs4_lookup_root(server
, fhandle
, info
);
2437 case -NFS4ERR_WRONGSEC
:
2440 err
= nfs4_handle_exception(server
, err
, &exception
);
2442 } while (exception
.retry
);
2447 static int nfs4_lookup_root_sec(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
2448 struct nfs_fsinfo
*info
, rpc_authflavor_t flavor
)
2450 struct rpc_auth
*auth
;
2453 auth
= rpcauth_create(flavor
, server
->client
);
2458 ret
= nfs4_lookup_root(server
, fhandle
, info
);
2463 static int nfs4_find_root_sec(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
2464 struct nfs_fsinfo
*info
)
2466 int i
, len
, status
= 0;
2467 rpc_authflavor_t flav_array
[NFS_MAX_SECFLAVORS
];
2469 len
= rpcauth_list_flavors(flav_array
, ARRAY_SIZE(flav_array
));
2473 for (i
= 0; i
< len
; i
++) {
2474 /* AUTH_UNIX is the default flavor if none was specified,
2475 * thus has already been tried. */
2476 if (flav_array
[i
] == RPC_AUTH_UNIX
)
2479 status
= nfs4_lookup_root_sec(server
, fhandle
, info
, flav_array
[i
]);
2480 if (status
== -NFS4ERR_WRONGSEC
|| status
== -EACCES
)
2485 * -EACCESS could mean that the user doesn't have correct permissions
2486 * to access the mount. It could also mean that we tried to mount
2487 * with a gss auth flavor, but rpc.gssd isn't running. Either way,
2488 * existing mount programs don't handle -EACCES very well so it should
2489 * be mapped to -EPERM instead.
2491 if (status
== -EACCES
)
2497 * get the file handle for the "/" directory on the server
2499 int nfs4_proc_get_rootfh(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
2500 struct nfs_fsinfo
*info
)
2502 int minor_version
= server
->nfs_client
->cl_minorversion
;
2503 int status
= nfs4_lookup_root(server
, fhandle
, info
);
2504 if ((status
== -NFS4ERR_WRONGSEC
) && !(server
->flags
& NFS_MOUNT_SECFLAVOUR
))
2506 * A status of -NFS4ERR_WRONGSEC will be mapped to -EPERM
2507 * by nfs4_map_errors() as this function exits.
2509 status
= nfs_v4_minor_ops
[minor_version
]->find_root_sec(server
, fhandle
, info
);
2511 status
= nfs4_server_capabilities(server
, fhandle
);
2513 status
= nfs4_do_fsinfo(server
, fhandle
, info
);
2514 return nfs4_map_errors(status
);
2517 static int nfs4_proc_get_root(struct nfs_server
*server
, struct nfs_fh
*mntfh
,
2518 struct nfs_fsinfo
*info
)
2521 struct nfs_fattr
*fattr
= info
->fattr
;
2523 error
= nfs4_server_capabilities(server
, mntfh
);
2525 dprintk("nfs4_get_root: getcaps error = %d\n", -error
);
2529 error
= nfs4_proc_getattr(server
, mntfh
, fattr
);
2531 dprintk("nfs4_get_root: getattr error = %d\n", -error
);
2535 if (fattr
->valid
& NFS_ATTR_FATTR_FSID
&&
2536 !nfs_fsid_equal(&server
->fsid
, &fattr
->fsid
))
2537 memcpy(&server
->fsid
, &fattr
->fsid
, sizeof(server
->fsid
));
2543 * Get locations and (maybe) other attributes of a referral.
2544 * Note that we'll actually follow the referral later when
2545 * we detect fsid mismatch in inode revalidation
2547 static int nfs4_get_referral(struct rpc_clnt
*client
, struct inode
*dir
,
2548 const struct qstr
*name
, struct nfs_fattr
*fattr
,
2549 struct nfs_fh
*fhandle
)
2551 int status
= -ENOMEM
;
2552 struct page
*page
= NULL
;
2553 struct nfs4_fs_locations
*locations
= NULL
;
2555 page
= alloc_page(GFP_KERNEL
);
2558 locations
= kmalloc(sizeof(struct nfs4_fs_locations
), GFP_KERNEL
);
2559 if (locations
== NULL
)
2562 status
= nfs4_proc_fs_locations(client
, dir
, name
, locations
, page
);
2565 /* Make sure server returned a different fsid for the referral */
2566 if (nfs_fsid_equal(&NFS_SERVER(dir
)->fsid
, &locations
->fattr
.fsid
)) {
2567 dprintk("%s: server did not return a different fsid for"
2568 " a referral at %s\n", __func__
, name
->name
);
2572 /* Fixup attributes for the nfs_lookup() call to nfs_fhget() */
2573 nfs_fixup_referral_attributes(&locations
->fattr
);
2575 /* replace the lookup nfs_fattr with the locations nfs_fattr */
2576 memcpy(fattr
, &locations
->fattr
, sizeof(struct nfs_fattr
));
2577 memset(fhandle
, 0, sizeof(struct nfs_fh
));
2585 static int _nfs4_proc_getattr(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fattr
*fattr
)
2587 struct nfs4_getattr_arg args
= {
2589 .bitmask
= server
->attr_bitmask
,
2591 struct nfs4_getattr_res res
= {
2595 struct rpc_message msg
= {
2596 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GETATTR
],
2601 nfs_fattr_init(fattr
);
2602 return nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
2605 static int nfs4_proc_getattr(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fattr
*fattr
)
2607 struct nfs4_exception exception
= { };
2610 err
= nfs4_handle_exception(server
,
2611 _nfs4_proc_getattr(server
, fhandle
, fattr
),
2613 } while (exception
.retry
);
2618 * The file is not closed if it is opened due to the a request to change
2619 * the size of the file. The open call will not be needed once the
2620 * VFS layer lookup-intents are implemented.
2622 * Close is called when the inode is destroyed.
2623 * If we haven't opened the file for O_WRONLY, we
2624 * need to in the size_change case to obtain a stateid.
2627 * Because OPEN is always done by name in nfsv4, it is
2628 * possible that we opened a different file by the same
2629 * name. We can recognize this race condition, but we
2630 * can't do anything about it besides returning an error.
2632 * This will be fixed with VFS changes (lookup-intent).
2635 nfs4_proc_setattr(struct dentry
*dentry
, struct nfs_fattr
*fattr
,
2636 struct iattr
*sattr
)
2638 struct inode
*inode
= dentry
->d_inode
;
2639 struct rpc_cred
*cred
= NULL
;
2640 struct nfs4_state
*state
= NULL
;
2643 if (pnfs_ld_layoutret_on_setattr(inode
))
2644 pnfs_commit_and_return_layout(inode
);
2646 nfs_fattr_init(fattr
);
2648 /* Deal with open(O_TRUNC) */
2649 if (sattr
->ia_valid
& ATTR_OPEN
)
2650 sattr
->ia_valid
&= ~(ATTR_MTIME
|ATTR_CTIME
|ATTR_OPEN
);
2652 /* Optimization: if the end result is no change, don't RPC */
2653 if ((sattr
->ia_valid
& ~(ATTR_FILE
)) == 0)
2656 /* Search for an existing open(O_WRITE) file */
2657 if (sattr
->ia_valid
& ATTR_FILE
) {
2658 struct nfs_open_context
*ctx
;
2660 ctx
= nfs_file_open_context(sattr
->ia_file
);
2667 status
= nfs4_do_setattr(inode
, cred
, fattr
, sattr
, state
);
2669 nfs_setattr_update_inode(inode
, sattr
);
2673 static int _nfs4_proc_lookup(struct rpc_clnt
*clnt
, struct inode
*dir
,
2674 const struct qstr
*name
, struct nfs_fh
*fhandle
,
2675 struct nfs_fattr
*fattr
)
2677 struct nfs_server
*server
= NFS_SERVER(dir
);
2679 struct nfs4_lookup_arg args
= {
2680 .bitmask
= server
->attr_bitmask
,
2681 .dir_fh
= NFS_FH(dir
),
2684 struct nfs4_lookup_res res
= {
2689 struct rpc_message msg
= {
2690 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOOKUP
],
2695 nfs_fattr_init(fattr
);
2697 dprintk("NFS call lookup %s\n", name
->name
);
2698 status
= nfs4_call_sync(clnt
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
2699 dprintk("NFS reply lookup: %d\n", status
);
2703 static void nfs_fixup_secinfo_attributes(struct nfs_fattr
*fattr
)
2705 fattr
->valid
|= NFS_ATTR_FATTR_TYPE
| NFS_ATTR_FATTR_MODE
|
2706 NFS_ATTR_FATTR_NLINK
| NFS_ATTR_FATTR_MOUNTPOINT
;
2707 fattr
->mode
= S_IFDIR
| S_IRUGO
| S_IXUGO
;
2711 static int nfs4_proc_lookup_common(struct rpc_clnt
**clnt
, struct inode
*dir
,
2712 struct qstr
*name
, struct nfs_fh
*fhandle
,
2713 struct nfs_fattr
*fattr
)
2715 struct nfs4_exception exception
= { };
2716 struct rpc_clnt
*client
= *clnt
;
2719 err
= _nfs4_proc_lookup(client
, dir
, name
, fhandle
, fattr
);
2721 case -NFS4ERR_BADNAME
:
2724 case -NFS4ERR_MOVED
:
2725 err
= nfs4_get_referral(client
, dir
, name
, fattr
, fhandle
);
2727 case -NFS4ERR_WRONGSEC
:
2729 if (client
!= *clnt
)
2732 client
= nfs4_create_sec_client(client
, dir
, name
);
2734 return PTR_ERR(client
);
2736 exception
.retry
= 1;
2739 err
= nfs4_handle_exception(NFS_SERVER(dir
), err
, &exception
);
2741 } while (exception
.retry
);
2746 else if (client
!= *clnt
)
2747 rpc_shutdown_client(client
);
2752 static int nfs4_proc_lookup(struct inode
*dir
, struct qstr
*name
,
2753 struct nfs_fh
*fhandle
, struct nfs_fattr
*fattr
)
2756 struct rpc_clnt
*client
= NFS_CLIENT(dir
);
2758 status
= nfs4_proc_lookup_common(&client
, dir
, name
, fhandle
, fattr
);
2759 if (client
!= NFS_CLIENT(dir
)) {
2760 rpc_shutdown_client(client
);
2761 nfs_fixup_secinfo_attributes(fattr
);
2767 nfs4_proc_lookup_mountpoint(struct inode
*dir
, struct qstr
*name
,
2768 struct nfs_fh
*fhandle
, struct nfs_fattr
*fattr
)
2771 struct rpc_clnt
*client
= rpc_clone_client(NFS_CLIENT(dir
));
2773 status
= nfs4_proc_lookup_common(&client
, dir
, name
, fhandle
, fattr
);
2775 rpc_shutdown_client(client
);
2776 return ERR_PTR(status
);
2781 static int _nfs4_proc_access(struct inode
*inode
, struct nfs_access_entry
*entry
)
2783 struct nfs_server
*server
= NFS_SERVER(inode
);
2784 struct nfs4_accessargs args
= {
2785 .fh
= NFS_FH(inode
),
2786 .bitmask
= server
->cache_consistency_bitmask
,
2788 struct nfs4_accessres res
= {
2791 struct rpc_message msg
= {
2792 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_ACCESS
],
2795 .rpc_cred
= entry
->cred
,
2797 int mode
= entry
->mask
;
2801 * Determine which access bits we want to ask for...
2803 if (mode
& MAY_READ
)
2804 args
.access
|= NFS4_ACCESS_READ
;
2805 if (S_ISDIR(inode
->i_mode
)) {
2806 if (mode
& MAY_WRITE
)
2807 args
.access
|= NFS4_ACCESS_MODIFY
| NFS4_ACCESS_EXTEND
| NFS4_ACCESS_DELETE
;
2808 if (mode
& MAY_EXEC
)
2809 args
.access
|= NFS4_ACCESS_LOOKUP
;
2811 if (mode
& MAY_WRITE
)
2812 args
.access
|= NFS4_ACCESS_MODIFY
| NFS4_ACCESS_EXTEND
;
2813 if (mode
& MAY_EXEC
)
2814 args
.access
|= NFS4_ACCESS_EXECUTE
;
2817 res
.fattr
= nfs_alloc_fattr();
2818 if (res
.fattr
== NULL
)
2821 status
= nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
2823 nfs_access_set_mask(entry
, res
.access
);
2824 nfs_refresh_inode(inode
, res
.fattr
);
2826 nfs_free_fattr(res
.fattr
);
2830 static int nfs4_proc_access(struct inode
*inode
, struct nfs_access_entry
*entry
)
2832 struct nfs4_exception exception
= { };
2835 err
= nfs4_handle_exception(NFS_SERVER(inode
),
2836 _nfs4_proc_access(inode
, entry
),
2838 } while (exception
.retry
);
2843 * TODO: For the time being, we don't try to get any attributes
2844 * along with any of the zero-copy operations READ, READDIR,
2847 * In the case of the first three, we want to put the GETATTR
2848 * after the read-type operation -- this is because it is hard
2849 * to predict the length of a GETATTR response in v4, and thus
2850 * align the READ data correctly. This means that the GETATTR
2851 * may end up partially falling into the page cache, and we should
2852 * shift it into the 'tail' of the xdr_buf before processing.
2853 * To do this efficiently, we need to know the total length
2854 * of data received, which doesn't seem to be available outside
2857 * In the case of WRITE, we also want to put the GETATTR after
2858 * the operation -- in this case because we want to make sure
2859 * we get the post-operation mtime and size.
2861 * Both of these changes to the XDR layer would in fact be quite
2862 * minor, but I decided to leave them for a subsequent patch.
2864 static int _nfs4_proc_readlink(struct inode
*inode
, struct page
*page
,
2865 unsigned int pgbase
, unsigned int pglen
)
2867 struct nfs4_readlink args
= {
2868 .fh
= NFS_FH(inode
),
2873 struct nfs4_readlink_res res
;
2874 struct rpc_message msg
= {
2875 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_READLINK
],
2880 return nfs4_call_sync(NFS_SERVER(inode
)->client
, NFS_SERVER(inode
), &msg
, &args
.seq_args
, &res
.seq_res
, 0);
2883 static int nfs4_proc_readlink(struct inode
*inode
, struct page
*page
,
2884 unsigned int pgbase
, unsigned int pglen
)
2886 struct nfs4_exception exception
= { };
2889 err
= nfs4_handle_exception(NFS_SERVER(inode
),
2890 _nfs4_proc_readlink(inode
, page
, pgbase
, pglen
),
2892 } while (exception
.retry
);
2897 * This is just for mknod. open(O_CREAT) will always do ->open_context().
2900 nfs4_proc_create(struct inode
*dir
, struct dentry
*dentry
, struct iattr
*sattr
,
2903 struct nfs_open_context
*ctx
;
2904 struct nfs4_state
*state
;
2907 ctx
= alloc_nfs_open_context(dentry
, FMODE_READ
);
2909 return PTR_ERR(ctx
);
2911 sattr
->ia_mode
&= ~current_umask();
2912 state
= nfs4_do_open(dir
, dentry
, ctx
->mode
,
2913 flags
, sattr
, ctx
->cred
,
2914 &ctx
->mdsthreshold
);
2916 if (IS_ERR(state
)) {
2917 status
= PTR_ERR(state
);
2920 d_add(dentry
, igrab(state
->inode
));
2921 nfs_set_verifier(dentry
, nfs_save_change_attribute(dir
));
2924 put_nfs_open_context(ctx
);
2928 static int _nfs4_proc_remove(struct inode
*dir
, struct qstr
*name
)
2930 struct nfs_server
*server
= NFS_SERVER(dir
);
2931 struct nfs_removeargs args
= {
2935 struct nfs_removeres res
= {
2938 struct rpc_message msg
= {
2939 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_REMOVE
],
2945 status
= nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 1);
2947 update_changeattr(dir
, &res
.cinfo
);
2951 static int nfs4_proc_remove(struct inode
*dir
, struct qstr
*name
)
2953 struct nfs4_exception exception
= { };
2956 err
= nfs4_handle_exception(NFS_SERVER(dir
),
2957 _nfs4_proc_remove(dir
, name
),
2959 } while (exception
.retry
);
2963 static void nfs4_proc_unlink_setup(struct rpc_message
*msg
, struct inode
*dir
)
2965 struct nfs_server
*server
= NFS_SERVER(dir
);
2966 struct nfs_removeargs
*args
= msg
->rpc_argp
;
2967 struct nfs_removeres
*res
= msg
->rpc_resp
;
2969 res
->server
= server
;
2970 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_REMOVE
];
2971 nfs41_init_sequence(&args
->seq_args
, &res
->seq_res
, 1);
2974 static void nfs4_proc_unlink_rpc_prepare(struct rpc_task
*task
, struct nfs_unlinkdata
*data
)
2976 nfs4_setup_sequence(NFS_SERVER(data
->dir
),
2977 &data
->args
.seq_args
,
2982 static int nfs4_proc_unlink_done(struct rpc_task
*task
, struct inode
*dir
)
2984 struct nfs_removeres
*res
= task
->tk_msg
.rpc_resp
;
2986 if (!nfs4_sequence_done(task
, &res
->seq_res
))
2988 if (nfs4_async_handle_error(task
, res
->server
, NULL
) == -EAGAIN
)
2990 update_changeattr(dir
, &res
->cinfo
);
2994 static void nfs4_proc_rename_setup(struct rpc_message
*msg
, struct inode
*dir
)
2996 struct nfs_server
*server
= NFS_SERVER(dir
);
2997 struct nfs_renameargs
*arg
= msg
->rpc_argp
;
2998 struct nfs_renameres
*res
= msg
->rpc_resp
;
3000 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RENAME
];
3001 res
->server
= server
;
3002 nfs41_init_sequence(&arg
->seq_args
, &res
->seq_res
, 1);
3005 static void nfs4_proc_rename_rpc_prepare(struct rpc_task
*task
, struct nfs_renamedata
*data
)
3007 nfs4_setup_sequence(NFS_SERVER(data
->old_dir
),
3008 &data
->args
.seq_args
,
3013 static int nfs4_proc_rename_done(struct rpc_task
*task
, struct inode
*old_dir
,
3014 struct inode
*new_dir
)
3016 struct nfs_renameres
*res
= task
->tk_msg
.rpc_resp
;
3018 if (!nfs4_sequence_done(task
, &res
->seq_res
))
3020 if (nfs4_async_handle_error(task
, res
->server
, NULL
) == -EAGAIN
)
3023 update_changeattr(old_dir
, &res
->old_cinfo
);
3024 update_changeattr(new_dir
, &res
->new_cinfo
);
3028 static int _nfs4_proc_rename(struct inode
*old_dir
, struct qstr
*old_name
,
3029 struct inode
*new_dir
, struct qstr
*new_name
)
3031 struct nfs_server
*server
= NFS_SERVER(old_dir
);
3032 struct nfs_renameargs arg
= {
3033 .old_dir
= NFS_FH(old_dir
),
3034 .new_dir
= NFS_FH(new_dir
),
3035 .old_name
= old_name
,
3036 .new_name
= new_name
,
3038 struct nfs_renameres res
= {
3041 struct rpc_message msg
= {
3042 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RENAME
],
3046 int status
= -ENOMEM
;
3048 status
= nfs4_call_sync(server
->client
, server
, &msg
, &arg
.seq_args
, &res
.seq_res
, 1);
3050 update_changeattr(old_dir
, &res
.old_cinfo
);
3051 update_changeattr(new_dir
, &res
.new_cinfo
);
3056 static int nfs4_proc_rename(struct inode
*old_dir
, struct qstr
*old_name
,
3057 struct inode
*new_dir
, struct qstr
*new_name
)
3059 struct nfs4_exception exception
= { };
3062 err
= nfs4_handle_exception(NFS_SERVER(old_dir
),
3063 _nfs4_proc_rename(old_dir
, old_name
,
3066 } while (exception
.retry
);
3070 static int _nfs4_proc_link(struct inode
*inode
, struct inode
*dir
, struct qstr
*name
)
3072 struct nfs_server
*server
= NFS_SERVER(inode
);
3073 struct nfs4_link_arg arg
= {
3074 .fh
= NFS_FH(inode
),
3075 .dir_fh
= NFS_FH(dir
),
3077 .bitmask
= server
->attr_bitmask
,
3079 struct nfs4_link_res res
= {
3082 struct rpc_message msg
= {
3083 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LINK
],
3087 int status
= -ENOMEM
;
3089 res
.fattr
= nfs_alloc_fattr();
3090 if (res
.fattr
== NULL
)
3093 status
= nfs4_call_sync(server
->client
, server
, &msg
, &arg
.seq_args
, &res
.seq_res
, 1);
3095 update_changeattr(dir
, &res
.cinfo
);
3096 nfs_post_op_update_inode(inode
, res
.fattr
);
3099 nfs_free_fattr(res
.fattr
);
3103 static int nfs4_proc_link(struct inode
*inode
, struct inode
*dir
, struct qstr
*name
)
3105 struct nfs4_exception exception
= { };
3108 err
= nfs4_handle_exception(NFS_SERVER(inode
),
3109 _nfs4_proc_link(inode
, dir
, name
),
3111 } while (exception
.retry
);
3115 struct nfs4_createdata
{
3116 struct rpc_message msg
;
3117 struct nfs4_create_arg arg
;
3118 struct nfs4_create_res res
;
3120 struct nfs_fattr fattr
;
3123 static struct nfs4_createdata
*nfs4_alloc_createdata(struct inode
*dir
,
3124 struct qstr
*name
, struct iattr
*sattr
, u32 ftype
)
3126 struct nfs4_createdata
*data
;
3128 data
= kzalloc(sizeof(*data
), GFP_KERNEL
);
3130 struct nfs_server
*server
= NFS_SERVER(dir
);
3132 data
->msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_CREATE
];
3133 data
->msg
.rpc_argp
= &data
->arg
;
3134 data
->msg
.rpc_resp
= &data
->res
;
3135 data
->arg
.dir_fh
= NFS_FH(dir
);
3136 data
->arg
.server
= server
;
3137 data
->arg
.name
= name
;
3138 data
->arg
.attrs
= sattr
;
3139 data
->arg
.ftype
= ftype
;
3140 data
->arg
.bitmask
= server
->attr_bitmask
;
3141 data
->res
.server
= server
;
3142 data
->res
.fh
= &data
->fh
;
3143 data
->res
.fattr
= &data
->fattr
;
3144 nfs_fattr_init(data
->res
.fattr
);
3149 static int nfs4_do_create(struct inode
*dir
, struct dentry
*dentry
, struct nfs4_createdata
*data
)
3151 int status
= nfs4_call_sync(NFS_SERVER(dir
)->client
, NFS_SERVER(dir
), &data
->msg
,
3152 &data
->arg
.seq_args
, &data
->res
.seq_res
, 1);
3154 update_changeattr(dir
, &data
->res
.dir_cinfo
);
3155 status
= nfs_instantiate(dentry
, data
->res
.fh
, data
->res
.fattr
);
3160 static void nfs4_free_createdata(struct nfs4_createdata
*data
)
3165 static int _nfs4_proc_symlink(struct inode
*dir
, struct dentry
*dentry
,
3166 struct page
*page
, unsigned int len
, struct iattr
*sattr
)
3168 struct nfs4_createdata
*data
;
3169 int status
= -ENAMETOOLONG
;
3171 if (len
> NFS4_MAXPATHLEN
)
3175 data
= nfs4_alloc_createdata(dir
, &dentry
->d_name
, sattr
, NF4LNK
);
3179 data
->msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SYMLINK
];
3180 data
->arg
.u
.symlink
.pages
= &page
;
3181 data
->arg
.u
.symlink
.len
= len
;
3183 status
= nfs4_do_create(dir
, dentry
, data
);
3185 nfs4_free_createdata(data
);
3190 static int nfs4_proc_symlink(struct inode
*dir
, struct dentry
*dentry
,
3191 struct page
*page
, unsigned int len
, struct iattr
*sattr
)
3193 struct nfs4_exception exception
= { };
3196 err
= nfs4_handle_exception(NFS_SERVER(dir
),
3197 _nfs4_proc_symlink(dir
, dentry
, page
,
3200 } while (exception
.retry
);
3204 static int _nfs4_proc_mkdir(struct inode
*dir
, struct dentry
*dentry
,
3205 struct iattr
*sattr
)
3207 struct nfs4_createdata
*data
;
3208 int status
= -ENOMEM
;
3210 data
= nfs4_alloc_createdata(dir
, &dentry
->d_name
, sattr
, NF4DIR
);
3214 status
= nfs4_do_create(dir
, dentry
, data
);
3216 nfs4_free_createdata(data
);
3221 static int nfs4_proc_mkdir(struct inode
*dir
, struct dentry
*dentry
,
3222 struct iattr
*sattr
)
3224 struct nfs4_exception exception
= { };
3227 sattr
->ia_mode
&= ~current_umask();
3229 err
= nfs4_handle_exception(NFS_SERVER(dir
),
3230 _nfs4_proc_mkdir(dir
, dentry
, sattr
),
3232 } while (exception
.retry
);
3236 static int _nfs4_proc_readdir(struct dentry
*dentry
, struct rpc_cred
*cred
,
3237 u64 cookie
, struct page
**pages
, unsigned int count
, int plus
)
3239 struct inode
*dir
= dentry
->d_inode
;
3240 struct nfs4_readdir_arg args
= {
3245 .bitmask
= NFS_SERVER(dentry
->d_inode
)->attr_bitmask
,
3248 struct nfs4_readdir_res res
;
3249 struct rpc_message msg
= {
3250 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_READDIR
],
3257 dprintk("%s: dentry = %s/%s, cookie = %Lu\n", __func__
,
3258 dentry
->d_parent
->d_name
.name
,
3259 dentry
->d_name
.name
,
3260 (unsigned long long)cookie
);
3261 nfs4_setup_readdir(cookie
, NFS_I(dir
)->cookieverf
, dentry
, &args
);
3262 res
.pgbase
= args
.pgbase
;
3263 status
= nfs4_call_sync(NFS_SERVER(dir
)->client
, NFS_SERVER(dir
), &msg
, &args
.seq_args
, &res
.seq_res
, 0);
3265 memcpy(NFS_I(dir
)->cookieverf
, res
.verifier
.data
, NFS4_VERIFIER_SIZE
);
3266 status
+= args
.pgbase
;
3269 nfs_invalidate_atime(dir
);
3271 dprintk("%s: returns %d\n", __func__
, status
);
3275 static int nfs4_proc_readdir(struct dentry
*dentry
, struct rpc_cred
*cred
,
3276 u64 cookie
, struct page
**pages
, unsigned int count
, int plus
)
3278 struct nfs4_exception exception
= { };
3281 err
= nfs4_handle_exception(NFS_SERVER(dentry
->d_inode
),
3282 _nfs4_proc_readdir(dentry
, cred
, cookie
,
3283 pages
, count
, plus
),
3285 } while (exception
.retry
);
3289 static int _nfs4_proc_mknod(struct inode
*dir
, struct dentry
*dentry
,
3290 struct iattr
*sattr
, dev_t rdev
)
3292 struct nfs4_createdata
*data
;
3293 int mode
= sattr
->ia_mode
;
3294 int status
= -ENOMEM
;
3296 data
= nfs4_alloc_createdata(dir
, &dentry
->d_name
, sattr
, NF4SOCK
);
3301 data
->arg
.ftype
= NF4FIFO
;
3302 else if (S_ISBLK(mode
)) {
3303 data
->arg
.ftype
= NF4BLK
;
3304 data
->arg
.u
.device
.specdata1
= MAJOR(rdev
);
3305 data
->arg
.u
.device
.specdata2
= MINOR(rdev
);
3307 else if (S_ISCHR(mode
)) {
3308 data
->arg
.ftype
= NF4CHR
;
3309 data
->arg
.u
.device
.specdata1
= MAJOR(rdev
);
3310 data
->arg
.u
.device
.specdata2
= MINOR(rdev
);
3311 } else if (!S_ISSOCK(mode
)) {
3316 status
= nfs4_do_create(dir
, dentry
, data
);
3318 nfs4_free_createdata(data
);
3323 static int nfs4_proc_mknod(struct inode
*dir
, struct dentry
*dentry
,
3324 struct iattr
*sattr
, dev_t rdev
)
3326 struct nfs4_exception exception
= { };
3329 sattr
->ia_mode
&= ~current_umask();
3331 err
= nfs4_handle_exception(NFS_SERVER(dir
),
3332 _nfs4_proc_mknod(dir
, dentry
, sattr
, rdev
),
3334 } while (exception
.retry
);
3338 static int _nfs4_proc_statfs(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
3339 struct nfs_fsstat
*fsstat
)
3341 struct nfs4_statfs_arg args
= {
3343 .bitmask
= server
->attr_bitmask
,
3345 struct nfs4_statfs_res res
= {
3348 struct rpc_message msg
= {
3349 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_STATFS
],
3354 nfs_fattr_init(fsstat
->fattr
);
3355 return nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
3358 static int nfs4_proc_statfs(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fsstat
*fsstat
)
3360 struct nfs4_exception exception
= { };
3363 err
= nfs4_handle_exception(server
,
3364 _nfs4_proc_statfs(server
, fhandle
, fsstat
),
3366 } while (exception
.retry
);
3370 static int _nfs4_do_fsinfo(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
3371 struct nfs_fsinfo
*fsinfo
)
3373 struct nfs4_fsinfo_arg args
= {
3375 .bitmask
= server
->attr_bitmask
,
3377 struct nfs4_fsinfo_res res
= {
3380 struct rpc_message msg
= {
3381 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_FSINFO
],
3386 return nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
3389 static int nfs4_do_fsinfo(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fsinfo
*fsinfo
)
3391 struct nfs4_exception exception
= { };
3395 err
= nfs4_handle_exception(server
,
3396 _nfs4_do_fsinfo(server
, fhandle
, fsinfo
),
3398 } while (exception
.retry
);
3402 static int nfs4_proc_fsinfo(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fsinfo
*fsinfo
)
3406 nfs_fattr_init(fsinfo
->fattr
);
3407 error
= nfs4_do_fsinfo(server
, fhandle
, fsinfo
);
3409 /* block layout checks this! */
3410 server
->pnfs_blksize
= fsinfo
->blksize
;
3411 set_pnfs_layoutdriver(server
, fhandle
, fsinfo
->layouttype
);
3417 static int _nfs4_proc_pathconf(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
3418 struct nfs_pathconf
*pathconf
)
3420 struct nfs4_pathconf_arg args
= {
3422 .bitmask
= server
->attr_bitmask
,
3424 struct nfs4_pathconf_res res
= {
3425 .pathconf
= pathconf
,
3427 struct rpc_message msg
= {
3428 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_PATHCONF
],
3433 /* None of the pathconf attributes are mandatory to implement */
3434 if ((args
.bitmask
[0] & nfs4_pathconf_bitmap
[0]) == 0) {
3435 memset(pathconf
, 0, sizeof(*pathconf
));
3439 nfs_fattr_init(pathconf
->fattr
);
3440 return nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
3443 static int nfs4_proc_pathconf(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
3444 struct nfs_pathconf
*pathconf
)
3446 struct nfs4_exception exception
= { };
3450 err
= nfs4_handle_exception(server
,
3451 _nfs4_proc_pathconf(server
, fhandle
, pathconf
),
3453 } while (exception
.retry
);
3457 void __nfs4_read_done_cb(struct nfs_read_data
*data
)
3459 nfs_invalidate_atime(data
->header
->inode
);
3462 static int nfs4_read_done_cb(struct rpc_task
*task
, struct nfs_read_data
*data
)
3464 struct nfs_server
*server
= NFS_SERVER(data
->header
->inode
);
3466 if (nfs4_async_handle_error(task
, server
, data
->args
.context
->state
) == -EAGAIN
) {
3467 rpc_restart_call_prepare(task
);
3471 __nfs4_read_done_cb(data
);
3472 if (task
->tk_status
> 0)
3473 renew_lease(server
, data
->timestamp
);
3477 static int nfs4_read_done(struct rpc_task
*task
, struct nfs_read_data
*data
)
3480 dprintk("--> %s\n", __func__
);
3482 if (!nfs4_sequence_done(task
, &data
->res
.seq_res
))
3485 return data
->read_done_cb
? data
->read_done_cb(task
, data
) :
3486 nfs4_read_done_cb(task
, data
);
3489 static void nfs4_proc_read_setup(struct nfs_read_data
*data
, struct rpc_message
*msg
)
3491 data
->timestamp
= jiffies
;
3492 data
->read_done_cb
= nfs4_read_done_cb
;
3493 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_READ
];
3494 nfs41_init_sequence(&data
->args
.seq_args
, &data
->res
.seq_res
, 0);
3497 static void nfs4_proc_read_rpc_prepare(struct rpc_task
*task
, struct nfs_read_data
*data
)
3499 nfs4_setup_sequence(NFS_SERVER(data
->header
->inode
),
3500 &data
->args
.seq_args
,
3505 static int nfs4_write_done_cb(struct rpc_task
*task
, struct nfs_write_data
*data
)
3507 struct inode
*inode
= data
->header
->inode
;
3509 if (nfs4_async_handle_error(task
, NFS_SERVER(inode
), data
->args
.context
->state
) == -EAGAIN
) {
3510 rpc_restart_call_prepare(task
);
3513 if (task
->tk_status
>= 0) {
3514 renew_lease(NFS_SERVER(inode
), data
->timestamp
);
3515 nfs_post_op_update_inode_force_wcc(inode
, &data
->fattr
);
3520 static int nfs4_write_done(struct rpc_task
*task
, struct nfs_write_data
*data
)
3522 if (!nfs4_sequence_done(task
, &data
->res
.seq_res
))
3524 return data
->write_done_cb
? data
->write_done_cb(task
, data
) :
3525 nfs4_write_done_cb(task
, data
);
3529 bool nfs4_write_need_cache_consistency_data(const struct nfs_write_data
*data
)
3531 const struct nfs_pgio_header
*hdr
= data
->header
;
3533 /* Don't request attributes for pNFS or O_DIRECT writes */
3534 if (data
->ds_clp
!= NULL
|| hdr
->dreq
!= NULL
)
3536 /* Otherwise, request attributes if and only if we don't hold
3539 return nfs4_have_delegation(hdr
->inode
, FMODE_READ
) == 0;
3542 static void nfs4_proc_write_setup(struct nfs_write_data
*data
, struct rpc_message
*msg
)
3544 struct nfs_server
*server
= NFS_SERVER(data
->header
->inode
);
3546 if (!nfs4_write_need_cache_consistency_data(data
)) {
3547 data
->args
.bitmask
= NULL
;
3548 data
->res
.fattr
= NULL
;
3550 data
->args
.bitmask
= server
->cache_consistency_bitmask
;
3552 if (!data
->write_done_cb
)
3553 data
->write_done_cb
= nfs4_write_done_cb
;
3554 data
->res
.server
= server
;
3555 data
->timestamp
= jiffies
;
3557 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_WRITE
];
3558 nfs41_init_sequence(&data
->args
.seq_args
, &data
->res
.seq_res
, 1);
3561 static void nfs4_proc_write_rpc_prepare(struct rpc_task
*task
, struct nfs_write_data
*data
)
3563 nfs4_setup_sequence(NFS_SERVER(data
->header
->inode
),
3564 &data
->args
.seq_args
,
3569 static void nfs4_proc_commit_rpc_prepare(struct rpc_task
*task
, struct nfs_commit_data
*data
)
3571 nfs4_setup_sequence(NFS_SERVER(data
->inode
),
3572 &data
->args
.seq_args
,
3577 static int nfs4_commit_done_cb(struct rpc_task
*task
, struct nfs_commit_data
*data
)
3579 struct inode
*inode
= data
->inode
;
3581 if (nfs4_async_handle_error(task
, NFS_SERVER(inode
), NULL
) == -EAGAIN
) {
3582 rpc_restart_call_prepare(task
);
3588 static int nfs4_commit_done(struct rpc_task
*task
, struct nfs_commit_data
*data
)
3590 if (!nfs4_sequence_done(task
, &data
->res
.seq_res
))
3592 return data
->commit_done_cb(task
, data
);
3595 static void nfs4_proc_commit_setup(struct nfs_commit_data
*data
, struct rpc_message
*msg
)
3597 struct nfs_server
*server
= NFS_SERVER(data
->inode
);
3599 if (data
->commit_done_cb
== NULL
)
3600 data
->commit_done_cb
= nfs4_commit_done_cb
;
3601 data
->res
.server
= server
;
3602 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_COMMIT
];
3603 nfs41_init_sequence(&data
->args
.seq_args
, &data
->res
.seq_res
, 1);
3606 struct nfs4_renewdata
{
3607 struct nfs_client
*client
;
3608 unsigned long timestamp
;
3612 * nfs4_proc_async_renew(): This is not one of the nfs_rpc_ops; it is a special
3613 * standalone procedure for queueing an asynchronous RENEW.
3615 static void nfs4_renew_release(void *calldata
)
3617 struct nfs4_renewdata
*data
= calldata
;
3618 struct nfs_client
*clp
= data
->client
;
3620 if (atomic_read(&clp
->cl_count
) > 1)
3621 nfs4_schedule_state_renewal(clp
);
3622 nfs_put_client(clp
);
3626 static void nfs4_renew_done(struct rpc_task
*task
, void *calldata
)
3628 struct nfs4_renewdata
*data
= calldata
;
3629 struct nfs_client
*clp
= data
->client
;
3630 unsigned long timestamp
= data
->timestamp
;
3632 if (task
->tk_status
< 0) {
3633 /* Unless we're shutting down, schedule state recovery! */
3634 if (test_bit(NFS_CS_RENEWD
, &clp
->cl_res_state
) == 0)
3636 if (task
->tk_status
!= NFS4ERR_CB_PATH_DOWN
) {
3637 nfs4_schedule_lease_recovery(clp
);
3640 nfs4_schedule_path_down_recovery(clp
);
3642 do_renew_lease(clp
, timestamp
);
3645 static const struct rpc_call_ops nfs4_renew_ops
= {
3646 .rpc_call_done
= nfs4_renew_done
,
3647 .rpc_release
= nfs4_renew_release
,
3650 static int nfs4_proc_async_renew(struct nfs_client
*clp
, struct rpc_cred
*cred
, unsigned renew_flags
)
3652 struct rpc_message msg
= {
3653 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RENEW
],
3657 struct nfs4_renewdata
*data
;
3659 if (renew_flags
== 0)
3661 if (!atomic_inc_not_zero(&clp
->cl_count
))
3663 data
= kmalloc(sizeof(*data
), GFP_NOFS
);
3667 data
->timestamp
= jiffies
;
3668 return rpc_call_async(clp
->cl_rpcclient
, &msg
, RPC_TASK_SOFT
,
3669 &nfs4_renew_ops
, data
);
3672 static int nfs4_proc_renew(struct nfs_client
*clp
, struct rpc_cred
*cred
)
3674 struct rpc_message msg
= {
3675 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RENEW
],
3679 unsigned long now
= jiffies
;
3682 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, 0);
3685 do_renew_lease(clp
, now
);
3689 static inline int nfs4_server_supports_acls(struct nfs_server
*server
)
3691 return (server
->caps
& NFS_CAP_ACLS
)
3692 && (server
->acl_bitmask
& ACL4_SUPPORT_ALLOW_ACL
)
3693 && (server
->acl_bitmask
& ACL4_SUPPORT_DENY_ACL
);
3696 /* Assuming that XATTR_SIZE_MAX is a multiple of PAGE_SIZE, and that
3697 * it's OK to put sizeof(void) * (XATTR_SIZE_MAX/PAGE_SIZE) bytes on
3700 #define NFS4ACL_MAXPAGES DIV_ROUND_UP(XATTR_SIZE_MAX, PAGE_SIZE)
3702 static int buf_to_pages_noslab(const void *buf
, size_t buflen
,
3703 struct page
**pages
, unsigned int *pgbase
)
3705 struct page
*newpage
, **spages
;
3711 len
= min_t(size_t, PAGE_SIZE
, buflen
);
3712 newpage
= alloc_page(GFP_KERNEL
);
3714 if (newpage
== NULL
)
3716 memcpy(page_address(newpage
), buf
, len
);
3721 } while (buflen
!= 0);
3727 __free_page(spages
[rc
-1]);
3731 struct nfs4_cached_acl
{
3737 static void nfs4_set_cached_acl(struct inode
*inode
, struct nfs4_cached_acl
*acl
)
3739 struct nfs_inode
*nfsi
= NFS_I(inode
);
3741 spin_lock(&inode
->i_lock
);
3742 kfree(nfsi
->nfs4_acl
);
3743 nfsi
->nfs4_acl
= acl
;
3744 spin_unlock(&inode
->i_lock
);
3747 static void nfs4_zap_acl_attr(struct inode
*inode
)
3749 nfs4_set_cached_acl(inode
, NULL
);
3752 static inline ssize_t
nfs4_read_cached_acl(struct inode
*inode
, char *buf
, size_t buflen
)
3754 struct nfs_inode
*nfsi
= NFS_I(inode
);
3755 struct nfs4_cached_acl
*acl
;
3758 spin_lock(&inode
->i_lock
);
3759 acl
= nfsi
->nfs4_acl
;
3762 if (buf
== NULL
) /* user is just asking for length */
3764 if (acl
->cached
== 0)
3766 ret
= -ERANGE
; /* see getxattr(2) man page */
3767 if (acl
->len
> buflen
)
3769 memcpy(buf
, acl
->data
, acl
->len
);
3773 spin_unlock(&inode
->i_lock
);
3777 static void nfs4_write_cached_acl(struct inode
*inode
, struct page
**pages
, size_t pgbase
, size_t acl_len
)
3779 struct nfs4_cached_acl
*acl
;
3780 size_t buflen
= sizeof(*acl
) + acl_len
;
3782 if (buflen
<= PAGE_SIZE
) {
3783 acl
= kmalloc(buflen
, GFP_KERNEL
);
3787 _copy_from_pages(acl
->data
, pages
, pgbase
, acl_len
);
3789 acl
= kmalloc(sizeof(*acl
), GFP_KERNEL
);
3796 nfs4_set_cached_acl(inode
, acl
);
3800 * The getxattr API returns the required buffer length when called with a
3801 * NULL buf. The NFSv4 acl tool then calls getxattr again after allocating
3802 * the required buf. On a NULL buf, we send a page of data to the server
3803 * guessing that the ACL request can be serviced by a page. If so, we cache
3804 * up to the page of ACL data, and the 2nd call to getxattr is serviced by
3805 * the cache. If not so, we throw away the page, and cache the required
3806 * length. The next getxattr call will then produce another round trip to
3807 * the server, this time with the input buf of the required size.
3809 static ssize_t
__nfs4_get_acl_uncached(struct inode
*inode
, void *buf
, size_t buflen
)
3811 struct page
*pages
[NFS4ACL_MAXPAGES
] = {NULL
, };
3812 struct nfs_getaclargs args
= {
3813 .fh
= NFS_FH(inode
),
3817 struct nfs_getaclres res
= {
3820 struct rpc_message msg
= {
3821 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GETACL
],
3825 unsigned int npages
= DIV_ROUND_UP(buflen
, PAGE_SIZE
);
3826 int ret
= -ENOMEM
, i
;
3828 /* As long as we're doing a round trip to the server anyway,
3829 * let's be prepared for a page of acl data. */
3832 if (npages
> ARRAY_SIZE(pages
))
3835 for (i
= 0; i
< npages
; i
++) {
3836 pages
[i
] = alloc_page(GFP_KERNEL
);
3841 /* for decoding across pages */
3842 res
.acl_scratch
= alloc_page(GFP_KERNEL
);
3843 if (!res
.acl_scratch
)
3846 args
.acl_len
= npages
* PAGE_SIZE
;
3847 args
.acl_pgbase
= 0;
3849 dprintk("%s buf %p buflen %zu npages %d args.acl_len %zu\n",
3850 __func__
, buf
, buflen
, npages
, args
.acl_len
);
3851 ret
= nfs4_call_sync(NFS_SERVER(inode
)->client
, NFS_SERVER(inode
),
3852 &msg
, &args
.seq_args
, &res
.seq_res
, 0);
3856 /* Handle the case where the passed-in buffer is too short */
3857 if (res
.acl_flags
& NFS4_ACL_TRUNC
) {
3858 /* Did the user only issue a request for the acl length? */
3864 nfs4_write_cached_acl(inode
, pages
, res
.acl_data_offset
, res
.acl_len
);
3866 if (res
.acl_len
> buflen
) {
3870 _copy_from_pages(buf
, pages
, res
.acl_data_offset
, res
.acl_len
);
3875 for (i
= 0; i
< npages
; i
++)
3877 __free_page(pages
[i
]);
3878 if (res
.acl_scratch
)
3879 __free_page(res
.acl_scratch
);
3883 static ssize_t
nfs4_get_acl_uncached(struct inode
*inode
, void *buf
, size_t buflen
)
3885 struct nfs4_exception exception
= { };
3888 ret
= __nfs4_get_acl_uncached(inode
, buf
, buflen
);
3891 ret
= nfs4_handle_exception(NFS_SERVER(inode
), ret
, &exception
);
3892 } while (exception
.retry
);
3896 static ssize_t
nfs4_proc_get_acl(struct inode
*inode
, void *buf
, size_t buflen
)
3898 struct nfs_server
*server
= NFS_SERVER(inode
);
3901 if (!nfs4_server_supports_acls(server
))
3903 ret
= nfs_revalidate_inode(server
, inode
);
3906 if (NFS_I(inode
)->cache_validity
& NFS_INO_INVALID_ACL
)
3907 nfs_zap_acl_cache(inode
);
3908 ret
= nfs4_read_cached_acl(inode
, buf
, buflen
);
3910 /* -ENOENT is returned if there is no ACL or if there is an ACL
3911 * but no cached acl data, just the acl length */
3913 return nfs4_get_acl_uncached(inode
, buf
, buflen
);
3916 static int __nfs4_proc_set_acl(struct inode
*inode
, const void *buf
, size_t buflen
)
3918 struct nfs_server
*server
= NFS_SERVER(inode
);
3919 struct page
*pages
[NFS4ACL_MAXPAGES
];
3920 struct nfs_setaclargs arg
= {
3921 .fh
= NFS_FH(inode
),
3925 struct nfs_setaclres res
;
3926 struct rpc_message msg
= {
3927 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETACL
],
3931 unsigned int npages
= DIV_ROUND_UP(buflen
, PAGE_SIZE
);
3934 if (!nfs4_server_supports_acls(server
))
3936 if (npages
> ARRAY_SIZE(pages
))
3938 i
= buf_to_pages_noslab(buf
, buflen
, arg
.acl_pages
, &arg
.acl_pgbase
);
3941 nfs4_inode_return_delegation(inode
);
3942 ret
= nfs4_call_sync(server
->client
, server
, &msg
, &arg
.seq_args
, &res
.seq_res
, 1);
3945 * Free each page after tx, so the only ref left is
3946 * held by the network stack
3949 put_page(pages
[i
-1]);
3952 * Acl update can result in inode attribute update.
3953 * so mark the attribute cache invalid.
3955 spin_lock(&inode
->i_lock
);
3956 NFS_I(inode
)->cache_validity
|= NFS_INO_INVALID_ATTR
;
3957 spin_unlock(&inode
->i_lock
);
3958 nfs_access_zap_cache(inode
);
3959 nfs_zap_acl_cache(inode
);
3963 static int nfs4_proc_set_acl(struct inode
*inode
, const void *buf
, size_t buflen
)
3965 struct nfs4_exception exception
= { };
3968 err
= nfs4_handle_exception(NFS_SERVER(inode
),
3969 __nfs4_proc_set_acl(inode
, buf
, buflen
),
3971 } while (exception
.retry
);
3976 nfs4_async_handle_error(struct rpc_task
*task
, const struct nfs_server
*server
, struct nfs4_state
*state
)
3978 struct nfs_client
*clp
= server
->nfs_client
;
3980 if (task
->tk_status
>= 0)
3982 switch(task
->tk_status
) {
3983 case -NFS4ERR_DELEG_REVOKED
:
3984 case -NFS4ERR_ADMIN_REVOKED
:
3985 case -NFS4ERR_BAD_STATEID
:
3988 nfs_remove_bad_delegation(state
->inode
);
3989 case -NFS4ERR_OPENMODE
:
3992 if (nfs4_schedule_stateid_recovery(server
, state
) < 0)
3993 goto stateid_invalid
;
3994 goto wait_on_recovery
;
3995 case -NFS4ERR_EXPIRED
:
3996 if (state
!= NULL
) {
3997 if (nfs4_schedule_stateid_recovery(server
, state
) < 0)
3998 goto stateid_invalid
;
4000 case -NFS4ERR_STALE_STATEID
:
4001 case -NFS4ERR_STALE_CLIENTID
:
4002 nfs4_schedule_lease_recovery(clp
);
4003 goto wait_on_recovery
;
4004 #if defined(CONFIG_NFS_V4_1)
4005 case -NFS4ERR_BADSESSION
:
4006 case -NFS4ERR_BADSLOT
:
4007 case -NFS4ERR_BAD_HIGH_SLOT
:
4008 case -NFS4ERR_DEADSESSION
:
4009 case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION
:
4010 case -NFS4ERR_SEQ_FALSE_RETRY
:
4011 case -NFS4ERR_SEQ_MISORDERED
:
4012 dprintk("%s ERROR %d, Reset session\n", __func__
,
4014 nfs4_schedule_session_recovery(clp
->cl_session
, task
->tk_status
);
4015 task
->tk_status
= 0;
4017 #endif /* CONFIG_NFS_V4_1 */
4018 case -NFS4ERR_DELAY
:
4019 nfs_inc_server_stats(server
, NFSIOS_DELAY
);
4020 case -NFS4ERR_GRACE
:
4021 rpc_delay(task
, NFS4_POLL_RETRY_MAX
);
4022 task
->tk_status
= 0;
4024 case -NFS4ERR_RETRY_UNCACHED_REP
:
4025 case -NFS4ERR_OLD_STATEID
:
4026 task
->tk_status
= 0;
4029 task
->tk_status
= nfs4_map_errors(task
->tk_status
);
4032 task
->tk_status
= -EIO
;
4035 rpc_sleep_on(&clp
->cl_rpcwaitq
, task
, NULL
);
4036 if (test_bit(NFS4CLNT_MANAGER_RUNNING
, &clp
->cl_state
) == 0)
4037 rpc_wake_up_queued_task(&clp
->cl_rpcwaitq
, task
);
4038 task
->tk_status
= 0;
4042 static void nfs4_init_boot_verifier(const struct nfs_client
*clp
,
4043 nfs4_verifier
*bootverf
)
4047 if (test_bit(NFS4CLNT_PURGE_STATE
, &clp
->cl_state
)) {
4048 /* An impossible timestamp guarantees this value
4049 * will never match a generated boot time. */
4051 verf
[1] = (__be32
)(NSEC_PER_SEC
+ 1);
4053 struct nfs_net
*nn
= net_generic(clp
->cl_net
, nfs_net_id
);
4054 verf
[0] = (__be32
)nn
->boot_time
.tv_sec
;
4055 verf
[1] = (__be32
)nn
->boot_time
.tv_nsec
;
4057 memcpy(bootverf
->data
, verf
, sizeof(bootverf
->data
));
4061 nfs4_init_nonuniform_client_string(const struct nfs_client
*clp
,
4062 char *buf
, size_t len
)
4064 unsigned int result
;
4067 result
= scnprintf(buf
, len
, "Linux NFSv4.0 %s/%s %s",
4069 rpc_peeraddr2str(clp
->cl_rpcclient
,
4071 rpc_peeraddr2str(clp
->cl_rpcclient
,
4072 RPC_DISPLAY_PROTO
));
4078 nfs4_init_uniform_client_string(const struct nfs_client
*clp
,
4079 char *buf
, size_t len
)
4081 char *nodename
= clp
->cl_rpcclient
->cl_nodename
;
4083 if (nfs4_client_id_uniquifier
[0] != '\0')
4084 nodename
= nfs4_client_id_uniquifier
;
4085 return scnprintf(buf
, len
, "Linux NFSv%u.%u %s",
4086 clp
->rpc_ops
->version
, clp
->cl_minorversion
,
4091 * nfs4_proc_setclientid - Negotiate client ID
4092 * @clp: state data structure
4093 * @program: RPC program for NFSv4 callback service
4094 * @port: IP port number for NFS4 callback service
4095 * @cred: RPC credential to use for this call
4096 * @res: where to place the result
4098 * Returns zero, a negative errno, or a negative NFS4ERR status code.
4100 int nfs4_proc_setclientid(struct nfs_client
*clp
, u32 program
,
4101 unsigned short port
, struct rpc_cred
*cred
,
4102 struct nfs4_setclientid_res
*res
)
4104 nfs4_verifier sc_verifier
;
4105 struct nfs4_setclientid setclientid
= {
4106 .sc_verifier
= &sc_verifier
,
4108 .sc_cb_ident
= clp
->cl_cb_ident
,
4110 struct rpc_message msg
= {
4111 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETCLIENTID
],
4112 .rpc_argp
= &setclientid
,
4118 /* nfs_client_id4 */
4119 nfs4_init_boot_verifier(clp
, &sc_verifier
);
4120 if (test_bit(NFS_CS_MIGRATION
, &clp
->cl_flags
))
4121 setclientid
.sc_name_len
=
4122 nfs4_init_uniform_client_string(clp
,
4123 setclientid
.sc_name
,
4124 sizeof(setclientid
.sc_name
));
4126 setclientid
.sc_name_len
=
4127 nfs4_init_nonuniform_client_string(clp
,
4128 setclientid
.sc_name
,
4129 sizeof(setclientid
.sc_name
));
4132 setclientid
.sc_netid_len
= scnprintf(setclientid
.sc_netid
,
4133 sizeof(setclientid
.sc_netid
),
4134 rpc_peeraddr2str(clp
->cl_rpcclient
,
4135 RPC_DISPLAY_NETID
));
4137 setclientid
.sc_uaddr_len
= scnprintf(setclientid
.sc_uaddr
,
4138 sizeof(setclientid
.sc_uaddr
), "%s.%u.%u",
4139 clp
->cl_ipaddr
, port
>> 8, port
& 255);
4141 dprintk("NFS call setclientid auth=%s, '%.*s'\n",
4142 clp
->cl_rpcclient
->cl_auth
->au_ops
->au_name
,
4143 setclientid
.sc_name_len
, setclientid
.sc_name
);
4144 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
4145 dprintk("NFS reply setclientid: %d\n", status
);
4150 * nfs4_proc_setclientid_confirm - Confirm client ID
4151 * @clp: state data structure
4152 * @res: result of a previous SETCLIENTID
4153 * @cred: RPC credential to use for this call
4155 * Returns zero, a negative errno, or a negative NFS4ERR status code.
4157 int nfs4_proc_setclientid_confirm(struct nfs_client
*clp
,
4158 struct nfs4_setclientid_res
*arg
,
4159 struct rpc_cred
*cred
)
4161 struct nfs_fsinfo fsinfo
;
4162 struct rpc_message msg
= {
4163 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETCLIENTID_CONFIRM
],
4165 .rpc_resp
= &fsinfo
,
4171 dprintk("NFS call setclientid_confirm auth=%s, (client ID %llx)\n",
4172 clp
->cl_rpcclient
->cl_auth
->au_ops
->au_name
,
4175 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
4177 spin_lock(&clp
->cl_lock
);
4178 clp
->cl_lease_time
= fsinfo
.lease_time
* HZ
;
4179 clp
->cl_last_renewal
= now
;
4180 spin_unlock(&clp
->cl_lock
);
4182 dprintk("NFS reply setclientid_confirm: %d\n", status
);
4186 struct nfs4_delegreturndata
{
4187 struct nfs4_delegreturnargs args
;
4188 struct nfs4_delegreturnres res
;
4190 nfs4_stateid stateid
;
4191 unsigned long timestamp
;
4192 struct nfs_fattr fattr
;
4196 static void nfs4_delegreturn_done(struct rpc_task
*task
, void *calldata
)
4198 struct nfs4_delegreturndata
*data
= calldata
;
4200 if (!nfs4_sequence_done(task
, &data
->res
.seq_res
))
4203 switch (task
->tk_status
) {
4204 case -NFS4ERR_STALE_STATEID
:
4205 case -NFS4ERR_EXPIRED
:
4207 renew_lease(data
->res
.server
, data
->timestamp
);
4210 if (nfs4_async_handle_error(task
, data
->res
.server
, NULL
) ==
4212 rpc_restart_call_prepare(task
);
4216 data
->rpc_status
= task
->tk_status
;
4219 static void nfs4_delegreturn_release(void *calldata
)
4224 #if defined(CONFIG_NFS_V4_1)
4225 static void nfs4_delegreturn_prepare(struct rpc_task
*task
, void *data
)
4227 struct nfs4_delegreturndata
*d_data
;
4229 d_data
= (struct nfs4_delegreturndata
*)data
;
4231 nfs4_setup_sequence(d_data
->res
.server
,
4232 &d_data
->args
.seq_args
,
4233 &d_data
->res
.seq_res
,
4236 #endif /* CONFIG_NFS_V4_1 */
4238 static const struct rpc_call_ops nfs4_delegreturn_ops
= {
4239 #if defined(CONFIG_NFS_V4_1)
4240 .rpc_call_prepare
= nfs4_delegreturn_prepare
,
4241 #endif /* CONFIG_NFS_V4_1 */
4242 .rpc_call_done
= nfs4_delegreturn_done
,
4243 .rpc_release
= nfs4_delegreturn_release
,
4246 static int _nfs4_proc_delegreturn(struct inode
*inode
, struct rpc_cred
*cred
, const nfs4_stateid
*stateid
, int issync
)
4248 struct nfs4_delegreturndata
*data
;
4249 struct nfs_server
*server
= NFS_SERVER(inode
);
4250 struct rpc_task
*task
;
4251 struct rpc_message msg
= {
4252 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_DELEGRETURN
],
4255 struct rpc_task_setup task_setup_data
= {
4256 .rpc_client
= server
->client
,
4257 .rpc_message
= &msg
,
4258 .callback_ops
= &nfs4_delegreturn_ops
,
4259 .flags
= RPC_TASK_ASYNC
,
4263 data
= kzalloc(sizeof(*data
), GFP_NOFS
);
4266 nfs41_init_sequence(&data
->args
.seq_args
, &data
->res
.seq_res
, 1);
4267 data
->args
.fhandle
= &data
->fh
;
4268 data
->args
.stateid
= &data
->stateid
;
4269 data
->args
.bitmask
= server
->cache_consistency_bitmask
;
4270 nfs_copy_fh(&data
->fh
, NFS_FH(inode
));
4271 nfs4_stateid_copy(&data
->stateid
, stateid
);
4272 data
->res
.fattr
= &data
->fattr
;
4273 data
->res
.server
= server
;
4274 nfs_fattr_init(data
->res
.fattr
);
4275 data
->timestamp
= jiffies
;
4276 data
->rpc_status
= 0;
4278 task_setup_data
.callback_data
= data
;
4279 msg
.rpc_argp
= &data
->args
;
4280 msg
.rpc_resp
= &data
->res
;
4281 task
= rpc_run_task(&task_setup_data
);
4283 return PTR_ERR(task
);
4286 status
= nfs4_wait_for_completion_rpc_task(task
);
4289 status
= data
->rpc_status
;
4291 nfs_post_op_update_inode_force_wcc(inode
, &data
->fattr
);
4293 nfs_refresh_inode(inode
, &data
->fattr
);
4299 int nfs4_proc_delegreturn(struct inode
*inode
, struct rpc_cred
*cred
, const nfs4_stateid
*stateid
, int issync
)
4301 struct nfs_server
*server
= NFS_SERVER(inode
);
4302 struct nfs4_exception exception
= { };
4305 err
= _nfs4_proc_delegreturn(inode
, cred
, stateid
, issync
);
4307 case -NFS4ERR_STALE_STATEID
:
4308 case -NFS4ERR_EXPIRED
:
4312 err
= nfs4_handle_exception(server
, err
, &exception
);
4313 } while (exception
.retry
);
4317 #define NFS4_LOCK_MINTIMEOUT (1 * HZ)
4318 #define NFS4_LOCK_MAXTIMEOUT (30 * HZ)
4321 * sleep, with exponential backoff, and retry the LOCK operation.
4323 static unsigned long
4324 nfs4_set_lock_task_retry(unsigned long timeout
)
4326 freezable_schedule_timeout_killable(timeout
);
4328 if (timeout
> NFS4_LOCK_MAXTIMEOUT
)
4329 return NFS4_LOCK_MAXTIMEOUT
;
4333 static int _nfs4_proc_getlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
4335 struct inode
*inode
= state
->inode
;
4336 struct nfs_server
*server
= NFS_SERVER(inode
);
4337 struct nfs_client
*clp
= server
->nfs_client
;
4338 struct nfs_lockt_args arg
= {
4339 .fh
= NFS_FH(inode
),
4342 struct nfs_lockt_res res
= {
4345 struct rpc_message msg
= {
4346 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOCKT
],
4349 .rpc_cred
= state
->owner
->so_cred
,
4351 struct nfs4_lock_state
*lsp
;
4354 arg
.lock_owner
.clientid
= clp
->cl_clientid
;
4355 status
= nfs4_set_lock_state(state
, request
);
4358 lsp
= request
->fl_u
.nfs4_fl
.owner
;
4359 arg
.lock_owner
.id
= lsp
->ls_seqid
.owner_id
;
4360 arg
.lock_owner
.s_dev
= server
->s_dev
;
4361 status
= nfs4_call_sync(server
->client
, server
, &msg
, &arg
.seq_args
, &res
.seq_res
, 1);
4364 request
->fl_type
= F_UNLCK
;
4366 case -NFS4ERR_DENIED
:
4369 request
->fl_ops
->fl_release_private(request
);
4374 static int nfs4_proc_getlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
4376 struct nfs4_exception exception
= { };
4380 err
= nfs4_handle_exception(NFS_SERVER(state
->inode
),
4381 _nfs4_proc_getlk(state
, cmd
, request
),
4383 } while (exception
.retry
);
4387 static int do_vfs_lock(struct file
*file
, struct file_lock
*fl
)
4390 switch (fl
->fl_flags
& (FL_POSIX
|FL_FLOCK
)) {
4392 res
= posix_lock_file_wait(file
, fl
);
4395 res
= flock_lock_file_wait(file
, fl
);
4403 struct nfs4_unlockdata
{
4404 struct nfs_locku_args arg
;
4405 struct nfs_locku_res res
;
4406 struct nfs4_lock_state
*lsp
;
4407 struct nfs_open_context
*ctx
;
4408 struct file_lock fl
;
4409 const struct nfs_server
*server
;
4410 unsigned long timestamp
;
4413 static struct nfs4_unlockdata
*nfs4_alloc_unlockdata(struct file_lock
*fl
,
4414 struct nfs_open_context
*ctx
,
4415 struct nfs4_lock_state
*lsp
,
4416 struct nfs_seqid
*seqid
)
4418 struct nfs4_unlockdata
*p
;
4419 struct inode
*inode
= lsp
->ls_state
->inode
;
4421 p
= kzalloc(sizeof(*p
), GFP_NOFS
);
4424 p
->arg
.fh
= NFS_FH(inode
);
4426 p
->arg
.seqid
= seqid
;
4427 p
->res
.seqid
= seqid
;
4428 p
->arg
.stateid
= &lsp
->ls_stateid
;
4430 atomic_inc(&lsp
->ls_count
);
4431 /* Ensure we don't close file until we're done freeing locks! */
4432 p
->ctx
= get_nfs_open_context(ctx
);
4433 memcpy(&p
->fl
, fl
, sizeof(p
->fl
));
4434 p
->server
= NFS_SERVER(inode
);
4438 static void nfs4_locku_release_calldata(void *data
)
4440 struct nfs4_unlockdata
*calldata
= data
;
4441 nfs_free_seqid(calldata
->arg
.seqid
);
4442 nfs4_put_lock_state(calldata
->lsp
);
4443 put_nfs_open_context(calldata
->ctx
);
4447 static void nfs4_locku_done(struct rpc_task
*task
, void *data
)
4449 struct nfs4_unlockdata
*calldata
= data
;
4451 if (!nfs4_sequence_done(task
, &calldata
->res
.seq_res
))
4453 switch (task
->tk_status
) {
4455 nfs4_stateid_copy(&calldata
->lsp
->ls_stateid
,
4456 &calldata
->res
.stateid
);
4457 renew_lease(calldata
->server
, calldata
->timestamp
);
4459 case -NFS4ERR_BAD_STATEID
:
4460 case -NFS4ERR_OLD_STATEID
:
4461 case -NFS4ERR_STALE_STATEID
:
4462 case -NFS4ERR_EXPIRED
:
4465 if (nfs4_async_handle_error(task
, calldata
->server
, NULL
) == -EAGAIN
)
4466 rpc_restart_call_prepare(task
);
4468 nfs_release_seqid(calldata
->arg
.seqid
);
4471 static void nfs4_locku_prepare(struct rpc_task
*task
, void *data
)
4473 struct nfs4_unlockdata
*calldata
= data
;
4475 if (nfs_wait_on_sequence(calldata
->arg
.seqid
, task
) != 0)
4477 if (test_bit(NFS_LOCK_INITIALIZED
, &calldata
->lsp
->ls_flags
) == 0) {
4478 /* Note: exit _without_ running nfs4_locku_done */
4481 calldata
->timestamp
= jiffies
;
4482 if (nfs4_setup_sequence(calldata
->server
,
4483 &calldata
->arg
.seq_args
,
4484 &calldata
->res
.seq_res
,
4486 nfs_release_seqid(calldata
->arg
.seqid
);
4489 task
->tk_action
= NULL
;
4491 nfs4_sequence_done(task
, &calldata
->res
.seq_res
);
4494 static const struct rpc_call_ops nfs4_locku_ops
= {
4495 .rpc_call_prepare
= nfs4_locku_prepare
,
4496 .rpc_call_done
= nfs4_locku_done
,
4497 .rpc_release
= nfs4_locku_release_calldata
,
4500 static struct rpc_task
*nfs4_do_unlck(struct file_lock
*fl
,
4501 struct nfs_open_context
*ctx
,
4502 struct nfs4_lock_state
*lsp
,
4503 struct nfs_seqid
*seqid
)
4505 struct nfs4_unlockdata
*data
;
4506 struct rpc_message msg
= {
4507 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOCKU
],
4508 .rpc_cred
= ctx
->cred
,
4510 struct rpc_task_setup task_setup_data
= {
4511 .rpc_client
= NFS_CLIENT(lsp
->ls_state
->inode
),
4512 .rpc_message
= &msg
,
4513 .callback_ops
= &nfs4_locku_ops
,
4514 .workqueue
= nfsiod_workqueue
,
4515 .flags
= RPC_TASK_ASYNC
,
4518 /* Ensure this is an unlock - when canceling a lock, the
4519 * canceled lock is passed in, and it won't be an unlock.
4521 fl
->fl_type
= F_UNLCK
;
4523 data
= nfs4_alloc_unlockdata(fl
, ctx
, lsp
, seqid
);
4525 nfs_free_seqid(seqid
);
4526 return ERR_PTR(-ENOMEM
);
4529 nfs41_init_sequence(&data
->arg
.seq_args
, &data
->res
.seq_res
, 1);
4530 msg
.rpc_argp
= &data
->arg
;
4531 msg
.rpc_resp
= &data
->res
;
4532 task_setup_data
.callback_data
= data
;
4533 return rpc_run_task(&task_setup_data
);
4536 static int nfs4_proc_unlck(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
4538 struct inode
*inode
= state
->inode
;
4539 struct nfs4_state_owner
*sp
= state
->owner
;
4540 struct nfs_inode
*nfsi
= NFS_I(inode
);
4541 struct nfs_seqid
*seqid
;
4542 struct nfs4_lock_state
*lsp
;
4543 struct rpc_task
*task
;
4545 unsigned char fl_flags
= request
->fl_flags
;
4547 status
= nfs4_set_lock_state(state
, request
);
4548 /* Unlock _before_ we do the RPC call */
4549 request
->fl_flags
|= FL_EXISTS
;
4550 /* Exclude nfs_delegation_claim_locks() */
4551 mutex_lock(&sp
->so_delegreturn_mutex
);
4552 /* Exclude nfs4_reclaim_open_stateid() - note nesting! */
4553 down_read(&nfsi
->rwsem
);
4554 if (do_vfs_lock(request
->fl_file
, request
) == -ENOENT
) {
4555 up_read(&nfsi
->rwsem
);
4556 mutex_unlock(&sp
->so_delegreturn_mutex
);
4559 up_read(&nfsi
->rwsem
);
4560 mutex_unlock(&sp
->so_delegreturn_mutex
);
4563 /* Is this a delegated lock? */
4564 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
))
4566 lsp
= request
->fl_u
.nfs4_fl
.owner
;
4567 seqid
= nfs_alloc_seqid(&lsp
->ls_seqid
, GFP_KERNEL
);
4571 task
= nfs4_do_unlck(request
, nfs_file_open_context(request
->fl_file
), lsp
, seqid
);
4572 status
= PTR_ERR(task
);
4575 status
= nfs4_wait_for_completion_rpc_task(task
);
4578 request
->fl_flags
= fl_flags
;
4582 struct nfs4_lockdata
{
4583 struct nfs_lock_args arg
;
4584 struct nfs_lock_res res
;
4585 struct nfs4_lock_state
*lsp
;
4586 struct nfs_open_context
*ctx
;
4587 struct file_lock fl
;
4588 unsigned long timestamp
;
4591 struct nfs_server
*server
;
4594 static struct nfs4_lockdata
*nfs4_alloc_lockdata(struct file_lock
*fl
,
4595 struct nfs_open_context
*ctx
, struct nfs4_lock_state
*lsp
,
4598 struct nfs4_lockdata
*p
;
4599 struct inode
*inode
= lsp
->ls_state
->inode
;
4600 struct nfs_server
*server
= NFS_SERVER(inode
);
4602 p
= kzalloc(sizeof(*p
), gfp_mask
);
4606 p
->arg
.fh
= NFS_FH(inode
);
4608 p
->arg
.open_seqid
= nfs_alloc_seqid(&lsp
->ls_state
->owner
->so_seqid
, gfp_mask
);
4609 if (p
->arg
.open_seqid
== NULL
)
4611 p
->arg
.lock_seqid
= nfs_alloc_seqid(&lsp
->ls_seqid
, gfp_mask
);
4612 if (p
->arg
.lock_seqid
== NULL
)
4613 goto out_free_seqid
;
4614 p
->arg
.lock_stateid
= &lsp
->ls_stateid
;
4615 p
->arg
.lock_owner
.clientid
= server
->nfs_client
->cl_clientid
;
4616 p
->arg
.lock_owner
.id
= lsp
->ls_seqid
.owner_id
;
4617 p
->arg
.lock_owner
.s_dev
= server
->s_dev
;
4618 p
->res
.lock_seqid
= p
->arg
.lock_seqid
;
4621 atomic_inc(&lsp
->ls_count
);
4622 p
->ctx
= get_nfs_open_context(ctx
);
4623 memcpy(&p
->fl
, fl
, sizeof(p
->fl
));
4626 nfs_free_seqid(p
->arg
.open_seqid
);
4632 static void nfs4_lock_prepare(struct rpc_task
*task
, void *calldata
)
4634 struct nfs4_lockdata
*data
= calldata
;
4635 struct nfs4_state
*state
= data
->lsp
->ls_state
;
4637 dprintk("%s: begin!\n", __func__
);
4638 if (nfs_wait_on_sequence(data
->arg
.lock_seqid
, task
) != 0)
4640 /* Do we need to do an open_to_lock_owner? */
4641 if (!(data
->arg
.lock_seqid
->sequence
->flags
& NFS_SEQID_CONFIRMED
)) {
4642 if (nfs_wait_on_sequence(data
->arg
.open_seqid
, task
) != 0) {
4643 goto out_release_lock_seqid
;
4645 data
->arg
.open_stateid
= &state
->stateid
;
4646 data
->arg
.new_lock_owner
= 1;
4647 data
->res
.open_seqid
= data
->arg
.open_seqid
;
4649 data
->arg
.new_lock_owner
= 0;
4650 if (!nfs4_valid_open_stateid(state
)) {
4651 data
->rpc_status
= -EBADF
;
4652 task
->tk_action
= NULL
;
4653 goto out_release_open_seqid
;
4655 data
->timestamp
= jiffies
;
4656 if (nfs4_setup_sequence(data
->server
,
4657 &data
->arg
.seq_args
,
4661 out_release_open_seqid
:
4662 nfs_release_seqid(data
->arg
.open_seqid
);
4663 out_release_lock_seqid
:
4664 nfs_release_seqid(data
->arg
.lock_seqid
);
4666 nfs4_sequence_done(task
, &data
->res
.seq_res
);
4667 dprintk("%s: done!, ret = %d\n", __func__
, data
->rpc_status
);
4670 static void nfs4_lock_done(struct rpc_task
*task
, void *calldata
)
4672 struct nfs4_lockdata
*data
= calldata
;
4674 dprintk("%s: begin!\n", __func__
);
4676 if (!nfs4_sequence_done(task
, &data
->res
.seq_res
))
4679 data
->rpc_status
= task
->tk_status
;
4680 if (data
->arg
.new_lock_owner
!= 0) {
4681 if (data
->rpc_status
== 0)
4682 nfs_confirm_seqid(&data
->lsp
->ls_seqid
, 0);
4686 if (data
->rpc_status
== 0) {
4687 nfs4_stateid_copy(&data
->lsp
->ls_stateid
, &data
->res
.stateid
);
4688 set_bit(NFS_LOCK_INITIALIZED
, &data
->lsp
->ls_flags
);
4689 renew_lease(NFS_SERVER(data
->ctx
->dentry
->d_inode
), data
->timestamp
);
4692 dprintk("%s: done, ret = %d!\n", __func__
, data
->rpc_status
);
4695 static void nfs4_lock_release(void *calldata
)
4697 struct nfs4_lockdata
*data
= calldata
;
4699 dprintk("%s: begin!\n", __func__
);
4700 nfs_free_seqid(data
->arg
.open_seqid
);
4701 if (data
->cancelled
!= 0) {
4702 struct rpc_task
*task
;
4703 task
= nfs4_do_unlck(&data
->fl
, data
->ctx
, data
->lsp
,
4704 data
->arg
.lock_seqid
);
4706 rpc_put_task_async(task
);
4707 dprintk("%s: cancelling lock!\n", __func__
);
4709 nfs_free_seqid(data
->arg
.lock_seqid
);
4710 nfs4_put_lock_state(data
->lsp
);
4711 put_nfs_open_context(data
->ctx
);
4713 dprintk("%s: done!\n", __func__
);
4716 static const struct rpc_call_ops nfs4_lock_ops
= {
4717 .rpc_call_prepare
= nfs4_lock_prepare
,
4718 .rpc_call_done
= nfs4_lock_done
,
4719 .rpc_release
= nfs4_lock_release
,
4722 static void nfs4_handle_setlk_error(struct nfs_server
*server
, struct nfs4_lock_state
*lsp
, int new_lock_owner
, int error
)
4725 case -NFS4ERR_ADMIN_REVOKED
:
4726 case -NFS4ERR_BAD_STATEID
:
4727 lsp
->ls_seqid
.flags
&= ~NFS_SEQID_CONFIRMED
;
4728 if (new_lock_owner
!= 0 ||
4729 test_bit(NFS_LOCK_INITIALIZED
, &lsp
->ls_flags
) != 0)
4730 nfs4_schedule_stateid_recovery(server
, lsp
->ls_state
);
4732 case -NFS4ERR_STALE_STATEID
:
4733 lsp
->ls_seqid
.flags
&= ~NFS_SEQID_CONFIRMED
;
4734 case -NFS4ERR_EXPIRED
:
4735 nfs4_schedule_lease_recovery(server
->nfs_client
);
4739 static int _nfs4_do_setlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*fl
, int recovery_type
)
4741 struct nfs4_lockdata
*data
;
4742 struct rpc_task
*task
;
4743 struct rpc_message msg
= {
4744 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOCK
],
4745 .rpc_cred
= state
->owner
->so_cred
,
4747 struct rpc_task_setup task_setup_data
= {
4748 .rpc_client
= NFS_CLIENT(state
->inode
),
4749 .rpc_message
= &msg
,
4750 .callback_ops
= &nfs4_lock_ops
,
4751 .workqueue
= nfsiod_workqueue
,
4752 .flags
= RPC_TASK_ASYNC
,
4756 dprintk("%s: begin!\n", __func__
);
4757 data
= nfs4_alloc_lockdata(fl
, nfs_file_open_context(fl
->fl_file
),
4758 fl
->fl_u
.nfs4_fl
.owner
,
4759 recovery_type
== NFS_LOCK_NEW
? GFP_KERNEL
: GFP_NOFS
);
4763 data
->arg
.block
= 1;
4764 nfs41_init_sequence(&data
->arg
.seq_args
, &data
->res
.seq_res
, 1);
4765 msg
.rpc_argp
= &data
->arg
;
4766 msg
.rpc_resp
= &data
->res
;
4767 task_setup_data
.callback_data
= data
;
4768 if (recovery_type
> NFS_LOCK_NEW
) {
4769 if (recovery_type
== NFS_LOCK_RECLAIM
)
4770 data
->arg
.reclaim
= NFS_LOCK_RECLAIM
;
4771 nfs4_set_sequence_privileged(&data
->arg
.seq_args
);
4773 task
= rpc_run_task(&task_setup_data
);
4775 return PTR_ERR(task
);
4776 ret
= nfs4_wait_for_completion_rpc_task(task
);
4778 ret
= data
->rpc_status
;
4780 nfs4_handle_setlk_error(data
->server
, data
->lsp
,
4781 data
->arg
.new_lock_owner
, ret
);
4783 data
->cancelled
= 1;
4785 dprintk("%s: done, ret = %d!\n", __func__
, ret
);
4789 static int nfs4_lock_reclaim(struct nfs4_state
*state
, struct file_lock
*request
)
4791 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
4792 struct nfs4_exception exception
= {
4793 .inode
= state
->inode
,
4798 /* Cache the lock if possible... */
4799 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) != 0)
4801 err
= _nfs4_do_setlk(state
, F_SETLK
, request
, NFS_LOCK_RECLAIM
);
4802 if (err
!= -NFS4ERR_DELAY
)
4804 nfs4_handle_exception(server
, err
, &exception
);
4805 } while (exception
.retry
);
4809 static int nfs4_lock_expired(struct nfs4_state
*state
, struct file_lock
*request
)
4811 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
4812 struct nfs4_exception exception
= {
4813 .inode
= state
->inode
,
4817 err
= nfs4_set_lock_state(state
, request
);
4821 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) != 0)
4823 err
= _nfs4_do_setlk(state
, F_SETLK
, request
, NFS_LOCK_EXPIRED
);
4827 case -NFS4ERR_GRACE
:
4828 case -NFS4ERR_DELAY
:
4829 nfs4_handle_exception(server
, err
, &exception
);
4832 } while (exception
.retry
);
4837 #if defined(CONFIG_NFS_V4_1)
4839 * nfs41_check_expired_locks - possibly free a lock stateid
4841 * @state: NFSv4 state for an inode
4843 * Returns NFS_OK if recovery for this stateid is now finished.
4844 * Otherwise a negative NFS4ERR value is returned.
4846 static int nfs41_check_expired_locks(struct nfs4_state
*state
)
4848 int status
, ret
= -NFS4ERR_BAD_STATEID
;
4849 struct nfs4_lock_state
*lsp
;
4850 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
4852 list_for_each_entry(lsp
, &state
->lock_states
, ls_locks
) {
4853 if (test_bit(NFS_LOCK_INITIALIZED
, &lsp
->ls_flags
)) {
4854 status
= nfs41_test_stateid(server
, &lsp
->ls_stateid
);
4855 if (status
!= NFS_OK
) {
4856 /* Free the stateid unless the server
4857 * informs us the stateid is unrecognized. */
4858 if (status
!= -NFS4ERR_BAD_STATEID
)
4859 nfs41_free_stateid(server
,
4861 clear_bit(NFS_LOCK_INITIALIZED
, &lsp
->ls_flags
);
4870 static int nfs41_lock_expired(struct nfs4_state
*state
, struct file_lock
*request
)
4872 int status
= NFS_OK
;
4874 if (test_bit(LK_STATE_IN_USE
, &state
->flags
))
4875 status
= nfs41_check_expired_locks(state
);
4876 if (status
!= NFS_OK
)
4877 status
= nfs4_lock_expired(state
, request
);
4882 static int _nfs4_proc_setlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
4884 struct nfs4_state_owner
*sp
= state
->owner
;
4885 struct nfs_inode
*nfsi
= NFS_I(state
->inode
);
4886 unsigned char fl_flags
= request
->fl_flags
;
4888 int status
= -ENOLCK
;
4890 if ((fl_flags
& FL_POSIX
) &&
4891 !test_bit(NFS_STATE_POSIX_LOCKS
, &state
->flags
))
4893 /* Is this a delegated open? */
4894 status
= nfs4_set_lock_state(state
, request
);
4897 request
->fl_flags
|= FL_ACCESS
;
4898 status
= do_vfs_lock(request
->fl_file
, request
);
4901 down_read(&nfsi
->rwsem
);
4902 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
)) {
4903 /* Yes: cache locks! */
4904 /* ...but avoid races with delegation recall... */
4905 request
->fl_flags
= fl_flags
& ~FL_SLEEP
;
4906 status
= do_vfs_lock(request
->fl_file
, request
);
4909 seq
= raw_seqcount_begin(&sp
->so_reclaim_seqcount
);
4910 up_read(&nfsi
->rwsem
);
4911 status
= _nfs4_do_setlk(state
, cmd
, request
, NFS_LOCK_NEW
);
4914 down_read(&nfsi
->rwsem
);
4915 if (read_seqcount_retry(&sp
->so_reclaim_seqcount
, seq
)) {
4916 status
= -NFS4ERR_DELAY
;
4919 /* Note: we always want to sleep here! */
4920 request
->fl_flags
= fl_flags
| FL_SLEEP
;
4921 if (do_vfs_lock(request
->fl_file
, request
) < 0)
4922 printk(KERN_WARNING
"NFS: %s: VFS is out of sync with lock "
4923 "manager!\n", __func__
);
4925 up_read(&nfsi
->rwsem
);
4927 request
->fl_flags
= fl_flags
;
4931 static int nfs4_proc_setlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
4933 struct nfs4_exception exception
= {
4935 .inode
= state
->inode
,
4940 err
= _nfs4_proc_setlk(state
, cmd
, request
);
4941 if (err
== -NFS4ERR_DENIED
)
4943 err
= nfs4_handle_exception(NFS_SERVER(state
->inode
),
4945 } while (exception
.retry
);
4950 nfs4_proc_lock(struct file
*filp
, int cmd
, struct file_lock
*request
)
4952 struct nfs_open_context
*ctx
;
4953 struct nfs4_state
*state
;
4954 unsigned long timeout
= NFS4_LOCK_MINTIMEOUT
;
4957 /* verify open state */
4958 ctx
= nfs_file_open_context(filp
);
4961 if (request
->fl_start
< 0 || request
->fl_end
< 0)
4964 if (IS_GETLK(cmd
)) {
4966 return nfs4_proc_getlk(state
, F_GETLK
, request
);
4970 if (!(IS_SETLK(cmd
) || IS_SETLKW(cmd
)))
4973 if (request
->fl_type
== F_UNLCK
) {
4975 return nfs4_proc_unlck(state
, cmd
, request
);
4982 * Don't rely on the VFS having checked the file open mode,
4983 * since it won't do this for flock() locks.
4985 switch (request
->fl_type
) {
4987 if (!(filp
->f_mode
& FMODE_READ
))
4991 if (!(filp
->f_mode
& FMODE_WRITE
))
4996 status
= nfs4_proc_setlk(state
, cmd
, request
);
4997 if ((status
!= -EAGAIN
) || IS_SETLK(cmd
))
4999 timeout
= nfs4_set_lock_task_retry(timeout
);
5000 status
= -ERESTARTSYS
;
5003 } while(status
< 0);
5007 int nfs4_lock_delegation_recall(struct nfs4_state
*state
, struct file_lock
*fl
)
5009 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
5010 struct nfs4_exception exception
= { };
5013 err
= nfs4_set_lock_state(state
, fl
);
5017 err
= _nfs4_do_setlk(state
, F_SETLK
, fl
, NFS_LOCK_NEW
);
5020 printk(KERN_ERR
"NFS: %s: unhandled error "
5021 "%d.\n", __func__
, err
);
5025 case -NFS4ERR_STALE_CLIENTID
:
5026 case -NFS4ERR_STALE_STATEID
:
5027 set_bit(NFS_DELEGATED_STATE
, &state
->flags
);
5028 case -NFS4ERR_EXPIRED
:
5029 nfs4_schedule_lease_recovery(server
->nfs_client
);
5032 case -NFS4ERR_BADSESSION
:
5033 case -NFS4ERR_BADSLOT
:
5034 case -NFS4ERR_BAD_HIGH_SLOT
:
5035 case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION
:
5036 case -NFS4ERR_DEADSESSION
:
5037 set_bit(NFS_DELEGATED_STATE
, &state
->flags
);
5038 nfs4_schedule_session_recovery(server
->nfs_client
->cl_session
, err
);
5041 case -NFS4ERR_DELEG_REVOKED
:
5042 case -NFS4ERR_ADMIN_REVOKED
:
5043 case -NFS4ERR_BAD_STATEID
:
5044 case -NFS4ERR_OPENMODE
:
5045 nfs4_schedule_stateid_recovery(server
, state
);
5049 case -NFS4ERR_DENIED
:
5050 /* kill_proc(fl->fl_pid, SIGLOST, 1); */
5054 set_bit(NFS_DELEGATED_STATE
, &state
->flags
);
5055 err
= nfs4_handle_exception(server
, err
, &exception
);
5056 } while (exception
.retry
);
5061 struct nfs_release_lockowner_data
{
5062 struct nfs4_lock_state
*lsp
;
5063 struct nfs_server
*server
;
5064 struct nfs_release_lockowner_args args
;
5067 static void nfs4_release_lockowner_release(void *calldata
)
5069 struct nfs_release_lockowner_data
*data
= calldata
;
5070 nfs4_free_lock_state(data
->server
, data
->lsp
);
5074 static const struct rpc_call_ops nfs4_release_lockowner_ops
= {
5075 .rpc_release
= nfs4_release_lockowner_release
,
5078 int nfs4_release_lockowner(struct nfs4_lock_state
*lsp
)
5080 struct nfs_server
*server
= lsp
->ls_state
->owner
->so_server
;
5081 struct nfs_release_lockowner_data
*data
;
5082 struct rpc_message msg
= {
5083 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RELEASE_LOCKOWNER
],
5086 if (server
->nfs_client
->cl_mvops
->minor_version
!= 0)
5088 data
= kmalloc(sizeof(*data
), GFP_NOFS
);
5092 data
->server
= server
;
5093 data
->args
.lock_owner
.clientid
= server
->nfs_client
->cl_clientid
;
5094 data
->args
.lock_owner
.id
= lsp
->ls_seqid
.owner_id
;
5095 data
->args
.lock_owner
.s_dev
= server
->s_dev
;
5096 msg
.rpc_argp
= &data
->args
;
5097 rpc_call_async(server
->client
, &msg
, 0, &nfs4_release_lockowner_ops
, data
);
5101 #define XATTR_NAME_NFSV4_ACL "system.nfs4_acl"
5103 static int nfs4_xattr_set_nfs4_acl(struct dentry
*dentry
, const char *key
,
5104 const void *buf
, size_t buflen
,
5105 int flags
, int type
)
5107 if (strcmp(key
, "") != 0)
5110 return nfs4_proc_set_acl(dentry
->d_inode
, buf
, buflen
);
5113 static int nfs4_xattr_get_nfs4_acl(struct dentry
*dentry
, const char *key
,
5114 void *buf
, size_t buflen
, int type
)
5116 if (strcmp(key
, "") != 0)
5119 return nfs4_proc_get_acl(dentry
->d_inode
, buf
, buflen
);
5122 static size_t nfs4_xattr_list_nfs4_acl(struct dentry
*dentry
, char *list
,
5123 size_t list_len
, const char *name
,
5124 size_t name_len
, int type
)
5126 size_t len
= sizeof(XATTR_NAME_NFSV4_ACL
);
5128 if (!nfs4_server_supports_acls(NFS_SERVER(dentry
->d_inode
)))
5131 if (list
&& len
<= list_len
)
5132 memcpy(list
, XATTR_NAME_NFSV4_ACL
, len
);
5137 * nfs_fhget will use either the mounted_on_fileid or the fileid
5139 static void nfs_fixup_referral_attributes(struct nfs_fattr
*fattr
)
5141 if (!(((fattr
->valid
& NFS_ATTR_FATTR_MOUNTED_ON_FILEID
) ||
5142 (fattr
->valid
& NFS_ATTR_FATTR_FILEID
)) &&
5143 (fattr
->valid
& NFS_ATTR_FATTR_FSID
) &&
5144 (fattr
->valid
& NFS_ATTR_FATTR_V4_LOCATIONS
)))
5147 fattr
->valid
|= NFS_ATTR_FATTR_TYPE
| NFS_ATTR_FATTR_MODE
|
5148 NFS_ATTR_FATTR_NLINK
| NFS_ATTR_FATTR_V4_REFERRAL
;
5149 fattr
->mode
= S_IFDIR
| S_IRUGO
| S_IXUGO
;
5153 static int _nfs4_proc_fs_locations(struct rpc_clnt
*client
, struct inode
*dir
,
5154 const struct qstr
*name
,
5155 struct nfs4_fs_locations
*fs_locations
,
5158 struct nfs_server
*server
= NFS_SERVER(dir
);
5160 [0] = FATTR4_WORD0_FSID
| FATTR4_WORD0_FS_LOCATIONS
,
5162 struct nfs4_fs_locations_arg args
= {
5163 .dir_fh
= NFS_FH(dir
),
5168 struct nfs4_fs_locations_res res
= {
5169 .fs_locations
= fs_locations
,
5171 struct rpc_message msg
= {
5172 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_FS_LOCATIONS
],
5178 dprintk("%s: start\n", __func__
);
5180 /* Ask for the fileid of the absent filesystem if mounted_on_fileid
5181 * is not supported */
5182 if (NFS_SERVER(dir
)->attr_bitmask
[1] & FATTR4_WORD1_MOUNTED_ON_FILEID
)
5183 bitmask
[1] |= FATTR4_WORD1_MOUNTED_ON_FILEID
;
5185 bitmask
[0] |= FATTR4_WORD0_FILEID
;
5187 nfs_fattr_init(&fs_locations
->fattr
);
5188 fs_locations
->server
= server
;
5189 fs_locations
->nlocations
= 0;
5190 status
= nfs4_call_sync(client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
5191 dprintk("%s: returned status = %d\n", __func__
, status
);
5195 int nfs4_proc_fs_locations(struct rpc_clnt
*client
, struct inode
*dir
,
5196 const struct qstr
*name
,
5197 struct nfs4_fs_locations
*fs_locations
,
5200 struct nfs4_exception exception
= { };
5203 err
= nfs4_handle_exception(NFS_SERVER(dir
),
5204 _nfs4_proc_fs_locations(client
, dir
, name
, fs_locations
, page
),
5206 } while (exception
.retry
);
5210 static int _nfs4_proc_secinfo(struct inode
*dir
, const struct qstr
*name
, struct nfs4_secinfo_flavors
*flavors
)
5213 struct nfs4_secinfo_arg args
= {
5214 .dir_fh
= NFS_FH(dir
),
5217 struct nfs4_secinfo_res res
= {
5220 struct rpc_message msg
= {
5221 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SECINFO
],
5226 dprintk("NFS call secinfo %s\n", name
->name
);
5227 status
= nfs4_call_sync(NFS_SERVER(dir
)->client
, NFS_SERVER(dir
), &msg
, &args
.seq_args
, &res
.seq_res
, 0);
5228 dprintk("NFS reply secinfo: %d\n", status
);
5232 int nfs4_proc_secinfo(struct inode
*dir
, const struct qstr
*name
,
5233 struct nfs4_secinfo_flavors
*flavors
)
5235 struct nfs4_exception exception
= { };
5238 err
= nfs4_handle_exception(NFS_SERVER(dir
),
5239 _nfs4_proc_secinfo(dir
, name
, flavors
),
5241 } while (exception
.retry
);
5245 #ifdef CONFIG_NFS_V4_1
5247 * Check the exchange flags returned by the server for invalid flags, having
5248 * both PNFS and NON_PNFS flags set, and not having one of NON_PNFS, PNFS, or
5251 static int nfs4_check_cl_exchange_flags(u32 flags
)
5253 if (flags
& ~EXCHGID4_FLAG_MASK_R
)
5255 if ((flags
& EXCHGID4_FLAG_USE_PNFS_MDS
) &&
5256 (flags
& EXCHGID4_FLAG_USE_NON_PNFS
))
5258 if (!(flags
& (EXCHGID4_FLAG_MASK_PNFS
)))
5262 return -NFS4ERR_INVAL
;
5266 nfs41_same_server_scope(struct nfs41_server_scope
*a
,
5267 struct nfs41_server_scope
*b
)
5269 if (a
->server_scope_sz
== b
->server_scope_sz
&&
5270 memcmp(a
->server_scope
, b
->server_scope
, a
->server_scope_sz
) == 0)
5277 * nfs4_proc_bind_conn_to_session()
5279 * The 4.1 client currently uses the same TCP connection for the
5280 * fore and backchannel.
5282 int nfs4_proc_bind_conn_to_session(struct nfs_client
*clp
, struct rpc_cred
*cred
)
5285 struct nfs41_bind_conn_to_session_res res
;
5286 struct rpc_message msg
= {
5288 &nfs4_procedures
[NFSPROC4_CLNT_BIND_CONN_TO_SESSION
],
5294 dprintk("--> %s\n", __func__
);
5296 res
.session
= kzalloc(sizeof(struct nfs4_session
), GFP_NOFS
);
5297 if (unlikely(res
.session
== NULL
)) {
5302 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
5304 if (memcmp(res
.session
->sess_id
.data
,
5305 clp
->cl_session
->sess_id
.data
, NFS4_MAX_SESSIONID_LEN
)) {
5306 dprintk("NFS: %s: Session ID mismatch\n", __func__
);
5310 if (res
.dir
!= NFS4_CDFS4_BOTH
) {
5311 dprintk("NFS: %s: Unexpected direction from server\n",
5316 if (res
.use_conn_in_rdma_mode
) {
5317 dprintk("NFS: %s: Server returned RDMA mode = true\n",
5326 dprintk("<-- %s status= %d\n", __func__
, status
);
5331 * nfs4_proc_exchange_id()
5333 * Returns zero, a negative errno, or a negative NFS4ERR status code.
5335 * Since the clientid has expired, all compounds using sessions
5336 * associated with the stale clientid will be returning
5337 * NFS4ERR_BADSESSION in the sequence operation, and will therefore
5338 * be in some phase of session reset.
5340 int nfs4_proc_exchange_id(struct nfs_client
*clp
, struct rpc_cred
*cred
)
5342 nfs4_verifier verifier
;
5343 struct nfs41_exchange_id_args args
= {
5344 .verifier
= &verifier
,
5346 .flags
= EXCHGID4_FLAG_SUPP_MOVED_REFER
,
5348 struct nfs41_exchange_id_res res
= {
5352 struct rpc_message msg
= {
5353 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_EXCHANGE_ID
],
5359 nfs4_init_boot_verifier(clp
, &verifier
);
5360 args
.id_len
= nfs4_init_uniform_client_string(clp
, args
.id
,
5362 dprintk("NFS call exchange_id auth=%s, '%.*s'\n",
5363 clp
->cl_rpcclient
->cl_auth
->au_ops
->au_name
,
5364 args
.id_len
, args
.id
);
5366 res
.server_owner
= kzalloc(sizeof(struct nfs41_server_owner
),
5368 if (unlikely(res
.server_owner
== NULL
)) {
5373 res
.server_scope
= kzalloc(sizeof(struct nfs41_server_scope
),
5375 if (unlikely(res
.server_scope
== NULL
)) {
5377 goto out_server_owner
;
5380 res
.impl_id
= kzalloc(sizeof(struct nfs41_impl_id
), GFP_NOFS
);
5381 if (unlikely(res
.impl_id
== NULL
)) {
5383 goto out_server_scope
;
5386 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
5388 status
= nfs4_check_cl_exchange_flags(res
.flags
);
5391 clp
->cl_clientid
= res
.clientid
;
5392 clp
->cl_exchange_flags
= (res
.flags
& ~EXCHGID4_FLAG_CONFIRMED_R
);
5393 if (!(res
.flags
& EXCHGID4_FLAG_CONFIRMED_R
))
5394 clp
->cl_seqid
= res
.seqid
;
5396 kfree(clp
->cl_serverowner
);
5397 clp
->cl_serverowner
= res
.server_owner
;
5398 res
.server_owner
= NULL
;
5400 /* use the most recent implementation id */
5401 kfree(clp
->cl_implid
);
5402 clp
->cl_implid
= res
.impl_id
;
5404 if (clp
->cl_serverscope
!= NULL
&&
5405 !nfs41_same_server_scope(clp
->cl_serverscope
,
5406 res
.server_scope
)) {
5407 dprintk("%s: server_scope mismatch detected\n",
5409 set_bit(NFS4CLNT_SERVER_SCOPE_MISMATCH
, &clp
->cl_state
);
5410 kfree(clp
->cl_serverscope
);
5411 clp
->cl_serverscope
= NULL
;
5414 if (clp
->cl_serverscope
== NULL
) {
5415 clp
->cl_serverscope
= res
.server_scope
;
5422 kfree(res
.server_owner
);
5424 kfree(res
.server_scope
);
5426 if (clp
->cl_implid
!= NULL
)
5427 dprintk("NFS reply exchange_id: Server Implementation ID: "
5428 "domain: %s, name: %s, date: %llu,%u\n",
5429 clp
->cl_implid
->domain
, clp
->cl_implid
->name
,
5430 clp
->cl_implid
->date
.seconds
,
5431 clp
->cl_implid
->date
.nseconds
);
5432 dprintk("NFS reply exchange_id: %d\n", status
);
5436 static int _nfs4_proc_destroy_clientid(struct nfs_client
*clp
,
5437 struct rpc_cred
*cred
)
5439 struct rpc_message msg
= {
5440 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_DESTROY_CLIENTID
],
5446 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
5448 dprintk("NFS: Got error %d from the server %s on "
5449 "DESTROY_CLIENTID.", status
, clp
->cl_hostname
);
5453 static int nfs4_proc_destroy_clientid(struct nfs_client
*clp
,
5454 struct rpc_cred
*cred
)
5459 for (loop
= NFS4_MAX_LOOP_ON_RECOVER
; loop
!= 0; loop
--) {
5460 ret
= _nfs4_proc_destroy_clientid(clp
, cred
);
5462 case -NFS4ERR_DELAY
:
5463 case -NFS4ERR_CLIENTID_BUSY
:
5473 int nfs4_destroy_clientid(struct nfs_client
*clp
)
5475 struct rpc_cred
*cred
;
5478 if (clp
->cl_mvops
->minor_version
< 1)
5480 if (clp
->cl_exchange_flags
== 0)
5482 if (clp
->cl_preserve_clid
)
5484 cred
= nfs4_get_exchange_id_cred(clp
);
5485 ret
= nfs4_proc_destroy_clientid(clp
, cred
);
5490 case -NFS4ERR_STALE_CLIENTID
:
5491 clp
->cl_exchange_flags
= 0;
5497 struct nfs4_get_lease_time_data
{
5498 struct nfs4_get_lease_time_args
*args
;
5499 struct nfs4_get_lease_time_res
*res
;
5500 struct nfs_client
*clp
;
5503 static void nfs4_get_lease_time_prepare(struct rpc_task
*task
,
5506 struct nfs4_get_lease_time_data
*data
=
5507 (struct nfs4_get_lease_time_data
*)calldata
;
5509 dprintk("--> %s\n", __func__
);
5510 /* just setup sequence, do not trigger session recovery
5511 since we're invoked within one */
5512 nfs41_setup_sequence(data
->clp
->cl_session
,
5513 &data
->args
->la_seq_args
,
5514 &data
->res
->lr_seq_res
,
5516 dprintk("<-- %s\n", __func__
);
5520 * Called from nfs4_state_manager thread for session setup, so don't recover
5521 * from sequence operation or clientid errors.
5523 static void nfs4_get_lease_time_done(struct rpc_task
*task
, void *calldata
)
5525 struct nfs4_get_lease_time_data
*data
=
5526 (struct nfs4_get_lease_time_data
*)calldata
;
5528 dprintk("--> %s\n", __func__
);
5529 if (!nfs41_sequence_done(task
, &data
->res
->lr_seq_res
))
5531 switch (task
->tk_status
) {
5532 case -NFS4ERR_DELAY
:
5533 case -NFS4ERR_GRACE
:
5534 dprintk("%s Retry: tk_status %d\n", __func__
, task
->tk_status
);
5535 rpc_delay(task
, NFS4_POLL_RETRY_MIN
);
5536 task
->tk_status
= 0;
5538 case -NFS4ERR_RETRY_UNCACHED_REP
:
5539 rpc_restart_call_prepare(task
);
5542 dprintk("<-- %s\n", __func__
);
5545 static const struct rpc_call_ops nfs4_get_lease_time_ops
= {
5546 .rpc_call_prepare
= nfs4_get_lease_time_prepare
,
5547 .rpc_call_done
= nfs4_get_lease_time_done
,
5550 int nfs4_proc_get_lease_time(struct nfs_client
*clp
, struct nfs_fsinfo
*fsinfo
)
5552 struct rpc_task
*task
;
5553 struct nfs4_get_lease_time_args args
;
5554 struct nfs4_get_lease_time_res res
= {
5555 .lr_fsinfo
= fsinfo
,
5557 struct nfs4_get_lease_time_data data
= {
5562 struct rpc_message msg
= {
5563 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GET_LEASE_TIME
],
5567 struct rpc_task_setup task_setup
= {
5568 .rpc_client
= clp
->cl_rpcclient
,
5569 .rpc_message
= &msg
,
5570 .callback_ops
= &nfs4_get_lease_time_ops
,
5571 .callback_data
= &data
,
5572 .flags
= RPC_TASK_TIMEOUT
,
5576 nfs41_init_sequence(&args
.la_seq_args
, &res
.lr_seq_res
, 0);
5577 nfs4_set_sequence_privileged(&args
.la_seq_args
);
5578 dprintk("--> %s\n", __func__
);
5579 task
= rpc_run_task(&task_setup
);
5582 status
= PTR_ERR(task
);
5584 status
= task
->tk_status
;
5587 dprintk("<-- %s return %d\n", __func__
, status
);
5593 * Initialize the values to be used by the client in CREATE_SESSION
5594 * If nfs4_init_session set the fore channel request and response sizes,
5597 * Set the back channel max_resp_sz_cached to zero to force the client to
5598 * always set csa_cachethis to FALSE because the current implementation
5599 * of the back channel DRC only supports caching the CB_SEQUENCE operation.
5601 static void nfs4_init_channel_attrs(struct nfs41_create_session_args
*args
)
5603 struct nfs4_session
*session
= args
->client
->cl_session
;
5604 unsigned int mxrqst_sz
= session
->fc_target_max_rqst_sz
,
5605 mxresp_sz
= session
->fc_target_max_resp_sz
;
5608 mxrqst_sz
= NFS_MAX_FILE_IO_SIZE
;
5610 mxresp_sz
= NFS_MAX_FILE_IO_SIZE
;
5611 /* Fore channel attributes */
5612 args
->fc_attrs
.max_rqst_sz
= mxrqst_sz
;
5613 args
->fc_attrs
.max_resp_sz
= mxresp_sz
;
5614 args
->fc_attrs
.max_ops
= NFS4_MAX_OPS
;
5615 args
->fc_attrs
.max_reqs
= max_session_slots
;
5617 dprintk("%s: Fore Channel : max_rqst_sz=%u max_resp_sz=%u "
5618 "max_ops=%u max_reqs=%u\n",
5620 args
->fc_attrs
.max_rqst_sz
, args
->fc_attrs
.max_resp_sz
,
5621 args
->fc_attrs
.max_ops
, args
->fc_attrs
.max_reqs
);
5623 /* Back channel attributes */
5624 args
->bc_attrs
.max_rqst_sz
= PAGE_SIZE
;
5625 args
->bc_attrs
.max_resp_sz
= PAGE_SIZE
;
5626 args
->bc_attrs
.max_resp_sz_cached
= 0;
5627 args
->bc_attrs
.max_ops
= NFS4_MAX_BACK_CHANNEL_OPS
;
5628 args
->bc_attrs
.max_reqs
= 1;
5630 dprintk("%s: Back Channel : max_rqst_sz=%u max_resp_sz=%u "
5631 "max_resp_sz_cached=%u max_ops=%u max_reqs=%u\n",
5633 args
->bc_attrs
.max_rqst_sz
, args
->bc_attrs
.max_resp_sz
,
5634 args
->bc_attrs
.max_resp_sz_cached
, args
->bc_attrs
.max_ops
,
5635 args
->bc_attrs
.max_reqs
);
5638 static int nfs4_verify_fore_channel_attrs(struct nfs41_create_session_args
*args
, struct nfs4_session
*session
)
5640 struct nfs4_channel_attrs
*sent
= &args
->fc_attrs
;
5641 struct nfs4_channel_attrs
*rcvd
= &session
->fc_attrs
;
5643 if (rcvd
->max_resp_sz
> sent
->max_resp_sz
)
5646 * Our requested max_ops is the minimum we need; we're not
5647 * prepared to break up compounds into smaller pieces than that.
5648 * So, no point even trying to continue if the server won't
5651 if (rcvd
->max_ops
< sent
->max_ops
)
5653 if (rcvd
->max_reqs
== 0)
5655 if (rcvd
->max_reqs
> NFS4_MAX_SLOT_TABLE
)
5656 rcvd
->max_reqs
= NFS4_MAX_SLOT_TABLE
;
5660 static int nfs4_verify_back_channel_attrs(struct nfs41_create_session_args
*args
, struct nfs4_session
*session
)
5662 struct nfs4_channel_attrs
*sent
= &args
->bc_attrs
;
5663 struct nfs4_channel_attrs
*rcvd
= &session
->bc_attrs
;
5665 if (rcvd
->max_rqst_sz
> sent
->max_rqst_sz
)
5667 if (rcvd
->max_resp_sz
< sent
->max_resp_sz
)
5669 if (rcvd
->max_resp_sz_cached
> sent
->max_resp_sz_cached
)
5671 /* These would render the backchannel useless: */
5672 if (rcvd
->max_ops
!= sent
->max_ops
)
5674 if (rcvd
->max_reqs
!= sent
->max_reqs
)
5679 static int nfs4_verify_channel_attrs(struct nfs41_create_session_args
*args
,
5680 struct nfs4_session
*session
)
5684 ret
= nfs4_verify_fore_channel_attrs(args
, session
);
5687 return nfs4_verify_back_channel_attrs(args
, session
);
5690 static int _nfs4_proc_create_session(struct nfs_client
*clp
,
5691 struct rpc_cred
*cred
)
5693 struct nfs4_session
*session
= clp
->cl_session
;
5694 struct nfs41_create_session_args args
= {
5696 .cb_program
= NFS4_CALLBACK
,
5698 struct nfs41_create_session_res res
= {
5701 struct rpc_message msg
= {
5702 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_CREATE_SESSION
],
5709 nfs4_init_channel_attrs(&args
);
5710 args
.flags
= (SESSION4_PERSIST
| SESSION4_BACK_CHAN
);
5712 status
= rpc_call_sync(session
->clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
5715 /* Verify the session's negotiated channel_attrs values */
5716 status
= nfs4_verify_channel_attrs(&args
, session
);
5717 /* Increment the clientid slot sequence id */
5725 * Issues a CREATE_SESSION operation to the server.
5726 * It is the responsibility of the caller to verify the session is
5727 * expired before calling this routine.
5729 int nfs4_proc_create_session(struct nfs_client
*clp
, struct rpc_cred
*cred
)
5733 struct nfs4_session
*session
= clp
->cl_session
;
5735 dprintk("--> %s clp=%p session=%p\n", __func__
, clp
, session
);
5737 status
= _nfs4_proc_create_session(clp
, cred
);
5741 /* Init or reset the session slot tables */
5742 status
= nfs4_setup_session_slot_tables(session
);
5743 dprintk("slot table setup returned %d\n", status
);
5747 ptr
= (unsigned *)&session
->sess_id
.data
[0];
5748 dprintk("%s client>seqid %d sessionid %u:%u:%u:%u\n", __func__
,
5749 clp
->cl_seqid
, ptr
[0], ptr
[1], ptr
[2], ptr
[3]);
5751 dprintk("<-- %s\n", __func__
);
5756 * Issue the over-the-wire RPC DESTROY_SESSION.
5757 * The caller must serialize access to this routine.
5759 int nfs4_proc_destroy_session(struct nfs4_session
*session
,
5760 struct rpc_cred
*cred
)
5762 struct rpc_message msg
= {
5763 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_DESTROY_SESSION
],
5764 .rpc_argp
= session
,
5769 dprintk("--> nfs4_proc_destroy_session\n");
5771 /* session is still being setup */
5772 if (session
->clp
->cl_cons_state
!= NFS_CS_READY
)
5775 status
= rpc_call_sync(session
->clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
5778 dprintk("NFS: Got error %d from the server on DESTROY_SESSION. "
5779 "Session has been destroyed regardless...\n", status
);
5781 dprintk("<-- nfs4_proc_destroy_session\n");
5786 * Renew the cl_session lease.
5788 struct nfs4_sequence_data
{
5789 struct nfs_client
*clp
;
5790 struct nfs4_sequence_args args
;
5791 struct nfs4_sequence_res res
;
5794 static void nfs41_sequence_release(void *data
)
5796 struct nfs4_sequence_data
*calldata
= data
;
5797 struct nfs_client
*clp
= calldata
->clp
;
5799 if (atomic_read(&clp
->cl_count
) > 1)
5800 nfs4_schedule_state_renewal(clp
);
5801 nfs_put_client(clp
);
5805 static int nfs41_sequence_handle_errors(struct rpc_task
*task
, struct nfs_client
*clp
)
5807 switch(task
->tk_status
) {
5808 case -NFS4ERR_DELAY
:
5809 rpc_delay(task
, NFS4_POLL_RETRY_MAX
);
5812 nfs4_schedule_lease_recovery(clp
);
5817 static void nfs41_sequence_call_done(struct rpc_task
*task
, void *data
)
5819 struct nfs4_sequence_data
*calldata
= data
;
5820 struct nfs_client
*clp
= calldata
->clp
;
5822 if (!nfs41_sequence_done(task
, task
->tk_msg
.rpc_resp
))
5825 if (task
->tk_status
< 0) {
5826 dprintk("%s ERROR %d\n", __func__
, task
->tk_status
);
5827 if (atomic_read(&clp
->cl_count
) == 1)
5830 if (nfs41_sequence_handle_errors(task
, clp
) == -EAGAIN
) {
5831 rpc_restart_call_prepare(task
);
5835 dprintk("%s rpc_cred %p\n", __func__
, task
->tk_msg
.rpc_cred
);
5837 dprintk("<-- %s\n", __func__
);
5840 static void nfs41_sequence_prepare(struct rpc_task
*task
, void *data
)
5842 struct nfs4_sequence_data
*calldata
= data
;
5843 struct nfs_client
*clp
= calldata
->clp
;
5844 struct nfs4_sequence_args
*args
;
5845 struct nfs4_sequence_res
*res
;
5847 args
= task
->tk_msg
.rpc_argp
;
5848 res
= task
->tk_msg
.rpc_resp
;
5850 nfs41_setup_sequence(clp
->cl_session
, args
, res
, task
);
5853 static const struct rpc_call_ops nfs41_sequence_ops
= {
5854 .rpc_call_done
= nfs41_sequence_call_done
,
5855 .rpc_call_prepare
= nfs41_sequence_prepare
,
5856 .rpc_release
= nfs41_sequence_release
,
5859 static struct rpc_task
*_nfs41_proc_sequence(struct nfs_client
*clp
,
5860 struct rpc_cred
*cred
,
5863 struct nfs4_sequence_data
*calldata
;
5864 struct rpc_message msg
= {
5865 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SEQUENCE
],
5868 struct rpc_task_setup task_setup_data
= {
5869 .rpc_client
= clp
->cl_rpcclient
,
5870 .rpc_message
= &msg
,
5871 .callback_ops
= &nfs41_sequence_ops
,
5872 .flags
= RPC_TASK_ASYNC
| RPC_TASK_SOFT
,
5875 if (!atomic_inc_not_zero(&clp
->cl_count
))
5876 return ERR_PTR(-EIO
);
5877 calldata
= kzalloc(sizeof(*calldata
), GFP_NOFS
);
5878 if (calldata
== NULL
) {
5879 nfs_put_client(clp
);
5880 return ERR_PTR(-ENOMEM
);
5882 nfs41_init_sequence(&calldata
->args
, &calldata
->res
, 0);
5884 nfs4_set_sequence_privileged(&calldata
->args
);
5885 msg
.rpc_argp
= &calldata
->args
;
5886 msg
.rpc_resp
= &calldata
->res
;
5887 calldata
->clp
= clp
;
5888 task_setup_data
.callback_data
= calldata
;
5890 return rpc_run_task(&task_setup_data
);
5893 static int nfs41_proc_async_sequence(struct nfs_client
*clp
, struct rpc_cred
*cred
, unsigned renew_flags
)
5895 struct rpc_task
*task
;
5898 if ((renew_flags
& NFS4_RENEW_TIMEOUT
) == 0)
5900 task
= _nfs41_proc_sequence(clp
, cred
, false);
5902 ret
= PTR_ERR(task
);
5904 rpc_put_task_async(task
);
5905 dprintk("<-- %s status=%d\n", __func__
, ret
);
5909 static int nfs4_proc_sequence(struct nfs_client
*clp
, struct rpc_cred
*cred
)
5911 struct rpc_task
*task
;
5914 task
= _nfs41_proc_sequence(clp
, cred
, true);
5916 ret
= PTR_ERR(task
);
5919 ret
= rpc_wait_for_completion_task(task
);
5921 struct nfs4_sequence_res
*res
= task
->tk_msg
.rpc_resp
;
5923 if (task
->tk_status
== 0)
5924 nfs41_handle_sequence_flag_errors(clp
, res
->sr_status_flags
);
5925 ret
= task
->tk_status
;
5929 dprintk("<-- %s status=%d\n", __func__
, ret
);
5933 struct nfs4_reclaim_complete_data
{
5934 struct nfs_client
*clp
;
5935 struct nfs41_reclaim_complete_args arg
;
5936 struct nfs41_reclaim_complete_res res
;
5939 static void nfs4_reclaim_complete_prepare(struct rpc_task
*task
, void *data
)
5941 struct nfs4_reclaim_complete_data
*calldata
= data
;
5943 nfs41_setup_sequence(calldata
->clp
->cl_session
,
5944 &calldata
->arg
.seq_args
,
5945 &calldata
->res
.seq_res
,
5949 static int nfs41_reclaim_complete_handle_errors(struct rpc_task
*task
, struct nfs_client
*clp
)
5951 switch(task
->tk_status
) {
5953 case -NFS4ERR_COMPLETE_ALREADY
:
5954 case -NFS4ERR_WRONG_CRED
: /* What to do here? */
5956 case -NFS4ERR_DELAY
:
5957 rpc_delay(task
, NFS4_POLL_RETRY_MAX
);
5959 case -NFS4ERR_RETRY_UNCACHED_REP
:
5962 nfs4_schedule_lease_recovery(clp
);
5967 static void nfs4_reclaim_complete_done(struct rpc_task
*task
, void *data
)
5969 struct nfs4_reclaim_complete_data
*calldata
= data
;
5970 struct nfs_client
*clp
= calldata
->clp
;
5971 struct nfs4_sequence_res
*res
= &calldata
->res
.seq_res
;
5973 dprintk("--> %s\n", __func__
);
5974 if (!nfs41_sequence_done(task
, res
))
5977 if (nfs41_reclaim_complete_handle_errors(task
, clp
) == -EAGAIN
) {
5978 rpc_restart_call_prepare(task
);
5981 dprintk("<-- %s\n", __func__
);
5984 static void nfs4_free_reclaim_complete_data(void *data
)
5986 struct nfs4_reclaim_complete_data
*calldata
= data
;
5991 static const struct rpc_call_ops nfs4_reclaim_complete_call_ops
= {
5992 .rpc_call_prepare
= nfs4_reclaim_complete_prepare
,
5993 .rpc_call_done
= nfs4_reclaim_complete_done
,
5994 .rpc_release
= nfs4_free_reclaim_complete_data
,
5998 * Issue a global reclaim complete.
6000 static int nfs41_proc_reclaim_complete(struct nfs_client
*clp
)
6002 struct nfs4_reclaim_complete_data
*calldata
;
6003 struct rpc_task
*task
;
6004 struct rpc_message msg
= {
6005 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RECLAIM_COMPLETE
],
6007 struct rpc_task_setup task_setup_data
= {
6008 .rpc_client
= clp
->cl_rpcclient
,
6009 .rpc_message
= &msg
,
6010 .callback_ops
= &nfs4_reclaim_complete_call_ops
,
6011 .flags
= RPC_TASK_ASYNC
,
6013 int status
= -ENOMEM
;
6015 dprintk("--> %s\n", __func__
);
6016 calldata
= kzalloc(sizeof(*calldata
), GFP_NOFS
);
6017 if (calldata
== NULL
)
6019 calldata
->clp
= clp
;
6020 calldata
->arg
.one_fs
= 0;
6022 nfs41_init_sequence(&calldata
->arg
.seq_args
, &calldata
->res
.seq_res
, 0);
6023 nfs4_set_sequence_privileged(&calldata
->arg
.seq_args
);
6024 msg
.rpc_argp
= &calldata
->arg
;
6025 msg
.rpc_resp
= &calldata
->res
;
6026 task_setup_data
.callback_data
= calldata
;
6027 task
= rpc_run_task(&task_setup_data
);
6029 status
= PTR_ERR(task
);
6032 status
= nfs4_wait_for_completion_rpc_task(task
);
6034 status
= task
->tk_status
;
6038 dprintk("<-- %s status=%d\n", __func__
, status
);
6043 nfs4_layoutget_prepare(struct rpc_task
*task
, void *calldata
)
6045 struct nfs4_layoutget
*lgp
= calldata
;
6046 struct nfs_server
*server
= NFS_SERVER(lgp
->args
.inode
);
6047 struct nfs4_session
*session
= nfs4_get_session(server
);
6049 dprintk("--> %s\n", __func__
);
6050 /* Note the is a race here, where a CB_LAYOUTRECALL can come in
6051 * right now covering the LAYOUTGET we are about to send.
6052 * However, that is not so catastrophic, and there seems
6053 * to be no way to prevent it completely.
6055 if (nfs41_setup_sequence(session
, &lgp
->args
.seq_args
,
6056 &lgp
->res
.seq_res
, task
))
6058 if (pnfs_choose_layoutget_stateid(&lgp
->args
.stateid
,
6059 NFS_I(lgp
->args
.inode
)->layout
,
6060 lgp
->args
.ctx
->state
)) {
6061 rpc_exit(task
, NFS4_OK
);
6065 static void nfs4_layoutget_done(struct rpc_task
*task
, void *calldata
)
6067 struct nfs4_layoutget
*lgp
= calldata
;
6068 struct inode
*inode
= lgp
->args
.inode
;
6069 struct nfs_server
*server
= NFS_SERVER(inode
);
6070 struct pnfs_layout_hdr
*lo
;
6071 struct nfs4_state
*state
= NULL
;
6072 unsigned long timeo
, giveup
;
6074 dprintk("--> %s\n", __func__
);
6076 if (!nfs41_sequence_done(task
, &lgp
->res
.seq_res
))
6079 switch (task
->tk_status
) {
6082 case -NFS4ERR_LAYOUTTRYLATER
:
6083 case -NFS4ERR_RECALLCONFLICT
:
6084 timeo
= rpc_get_timeout(task
->tk_client
);
6085 giveup
= lgp
->args
.timestamp
+ timeo
;
6086 if (time_after(giveup
, jiffies
))
6087 task
->tk_status
= -NFS4ERR_DELAY
;
6089 case -NFS4ERR_EXPIRED
:
6090 case -NFS4ERR_BAD_STATEID
:
6091 spin_lock(&inode
->i_lock
);
6092 lo
= NFS_I(inode
)->layout
;
6093 if (!lo
|| list_empty(&lo
->plh_segs
)) {
6094 spin_unlock(&inode
->i_lock
);
6095 /* If the open stateid was bad, then recover it. */
6096 state
= lgp
->args
.ctx
->state
;
6100 pnfs_mark_matching_lsegs_invalid(lo
, &head
, NULL
);
6101 spin_unlock(&inode
->i_lock
);
6102 /* Mark the bad layout state as invalid, then
6103 * retry using the open stateid. */
6104 pnfs_free_lseg_list(&head
);
6107 if (nfs4_async_handle_error(task
, server
, state
) == -EAGAIN
)
6108 rpc_restart_call_prepare(task
);
6110 dprintk("<-- %s\n", __func__
);
6113 static size_t max_response_pages(struct nfs_server
*server
)
6115 u32 max_resp_sz
= server
->nfs_client
->cl_session
->fc_attrs
.max_resp_sz
;
6116 return nfs_page_array_len(0, max_resp_sz
);
6119 static void nfs4_free_pages(struct page
**pages
, size_t size
)
6126 for (i
= 0; i
< size
; i
++) {
6129 __free_page(pages
[i
]);
6134 static struct page
**nfs4_alloc_pages(size_t size
, gfp_t gfp_flags
)
6136 struct page
**pages
;
6139 pages
= kcalloc(size
, sizeof(struct page
*), gfp_flags
);
6141 dprintk("%s: can't alloc array of %zu pages\n", __func__
, size
);
6145 for (i
= 0; i
< size
; i
++) {
6146 pages
[i
] = alloc_page(gfp_flags
);
6148 dprintk("%s: failed to allocate page\n", __func__
);
6149 nfs4_free_pages(pages
, size
);
6157 static void nfs4_layoutget_release(void *calldata
)
6159 struct nfs4_layoutget
*lgp
= calldata
;
6160 struct inode
*inode
= lgp
->args
.inode
;
6161 struct nfs_server
*server
= NFS_SERVER(inode
);
6162 size_t max_pages
= max_response_pages(server
);
6164 dprintk("--> %s\n", __func__
);
6165 nfs4_free_pages(lgp
->args
.layout
.pages
, max_pages
);
6166 pnfs_put_layout_hdr(NFS_I(inode
)->layout
);
6167 put_nfs_open_context(lgp
->args
.ctx
);
6169 dprintk("<-- %s\n", __func__
);
6172 static const struct rpc_call_ops nfs4_layoutget_call_ops
= {
6173 .rpc_call_prepare
= nfs4_layoutget_prepare
,
6174 .rpc_call_done
= nfs4_layoutget_done
,
6175 .rpc_release
= nfs4_layoutget_release
,
6178 struct pnfs_layout_segment
*
6179 nfs4_proc_layoutget(struct nfs4_layoutget
*lgp
, gfp_t gfp_flags
)
6181 struct inode
*inode
= lgp
->args
.inode
;
6182 struct nfs_server
*server
= NFS_SERVER(inode
);
6183 size_t max_pages
= max_response_pages(server
);
6184 struct rpc_task
*task
;
6185 struct rpc_message msg
= {
6186 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LAYOUTGET
],
6187 .rpc_argp
= &lgp
->args
,
6188 .rpc_resp
= &lgp
->res
,
6190 struct rpc_task_setup task_setup_data
= {
6191 .rpc_client
= server
->client
,
6192 .rpc_message
= &msg
,
6193 .callback_ops
= &nfs4_layoutget_call_ops
,
6194 .callback_data
= lgp
,
6195 .flags
= RPC_TASK_ASYNC
,
6197 struct pnfs_layout_segment
*lseg
= NULL
;
6200 dprintk("--> %s\n", __func__
);
6202 lgp
->args
.layout
.pages
= nfs4_alloc_pages(max_pages
, gfp_flags
);
6203 if (!lgp
->args
.layout
.pages
) {
6204 nfs4_layoutget_release(lgp
);
6205 return ERR_PTR(-ENOMEM
);
6207 lgp
->args
.layout
.pglen
= max_pages
* PAGE_SIZE
;
6208 lgp
->args
.timestamp
= jiffies
;
6210 lgp
->res
.layoutp
= &lgp
->args
.layout
;
6211 lgp
->res
.seq_res
.sr_slot
= NULL
;
6212 nfs41_init_sequence(&lgp
->args
.seq_args
, &lgp
->res
.seq_res
, 0);
6214 /* nfs4_layoutget_release calls pnfs_put_layout_hdr */
6215 pnfs_get_layout_hdr(NFS_I(inode
)->layout
);
6217 task
= rpc_run_task(&task_setup_data
);
6219 return ERR_CAST(task
);
6220 status
= nfs4_wait_for_completion_rpc_task(task
);
6222 status
= task
->tk_status
;
6223 /* if layoutp->len is 0, nfs4_layoutget_prepare called rpc_exit */
6224 if (status
== 0 && lgp
->res
.layoutp
->len
)
6225 lseg
= pnfs_layout_process(lgp
);
6227 dprintk("<-- %s status=%d\n", __func__
, status
);
6229 return ERR_PTR(status
);
6234 nfs4_layoutreturn_prepare(struct rpc_task
*task
, void *calldata
)
6236 struct nfs4_layoutreturn
*lrp
= calldata
;
6238 dprintk("--> %s\n", __func__
);
6239 nfs41_setup_sequence(lrp
->clp
->cl_session
,
6240 &lrp
->args
.seq_args
,
6245 static void nfs4_layoutreturn_done(struct rpc_task
*task
, void *calldata
)
6247 struct nfs4_layoutreturn
*lrp
= calldata
;
6248 struct nfs_server
*server
;
6250 dprintk("--> %s\n", __func__
);
6252 if (!nfs41_sequence_done(task
, &lrp
->res
.seq_res
))
6255 server
= NFS_SERVER(lrp
->args
.inode
);
6256 if (nfs4_async_handle_error(task
, server
, NULL
) == -EAGAIN
) {
6257 rpc_restart_call_prepare(task
);
6260 dprintk("<-- %s\n", __func__
);
6263 static void nfs4_layoutreturn_release(void *calldata
)
6265 struct nfs4_layoutreturn
*lrp
= calldata
;
6266 struct pnfs_layout_hdr
*lo
= lrp
->args
.layout
;
6268 dprintk("--> %s\n", __func__
);
6269 spin_lock(&lo
->plh_inode
->i_lock
);
6270 if (lrp
->res
.lrs_present
)
6271 pnfs_set_layout_stateid(lo
, &lrp
->res
.stateid
, true);
6272 lo
->plh_block_lgets
--;
6273 spin_unlock(&lo
->plh_inode
->i_lock
);
6274 pnfs_put_layout_hdr(lrp
->args
.layout
);
6276 dprintk("<-- %s\n", __func__
);
6279 static const struct rpc_call_ops nfs4_layoutreturn_call_ops
= {
6280 .rpc_call_prepare
= nfs4_layoutreturn_prepare
,
6281 .rpc_call_done
= nfs4_layoutreturn_done
,
6282 .rpc_release
= nfs4_layoutreturn_release
,
6285 int nfs4_proc_layoutreturn(struct nfs4_layoutreturn
*lrp
)
6287 struct rpc_task
*task
;
6288 struct rpc_message msg
= {
6289 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LAYOUTRETURN
],
6290 .rpc_argp
= &lrp
->args
,
6291 .rpc_resp
= &lrp
->res
,
6293 struct rpc_task_setup task_setup_data
= {
6294 .rpc_client
= lrp
->clp
->cl_rpcclient
,
6295 .rpc_message
= &msg
,
6296 .callback_ops
= &nfs4_layoutreturn_call_ops
,
6297 .callback_data
= lrp
,
6301 dprintk("--> %s\n", __func__
);
6302 nfs41_init_sequence(&lrp
->args
.seq_args
, &lrp
->res
.seq_res
, 1);
6303 task
= rpc_run_task(&task_setup_data
);
6305 return PTR_ERR(task
);
6306 status
= task
->tk_status
;
6307 dprintk("<-- %s status=%d\n", __func__
, status
);
6313 * Retrieve the list of Data Server devices from the MDS.
6315 static int _nfs4_getdevicelist(struct nfs_server
*server
,
6316 const struct nfs_fh
*fh
,
6317 struct pnfs_devicelist
*devlist
)
6319 struct nfs4_getdevicelist_args args
= {
6321 .layoutclass
= server
->pnfs_curr_ld
->id
,
6323 struct nfs4_getdevicelist_res res
= {
6326 struct rpc_message msg
= {
6327 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GETDEVICELIST
],
6333 dprintk("--> %s\n", __func__
);
6334 status
= nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
,
6336 dprintk("<-- %s status=%d\n", __func__
, status
);
6340 int nfs4_proc_getdevicelist(struct nfs_server
*server
,
6341 const struct nfs_fh
*fh
,
6342 struct pnfs_devicelist
*devlist
)
6344 struct nfs4_exception exception
= { };
6348 err
= nfs4_handle_exception(server
,
6349 _nfs4_getdevicelist(server
, fh
, devlist
),
6351 } while (exception
.retry
);
6353 dprintk("%s: err=%d, num_devs=%u\n", __func__
,
6354 err
, devlist
->num_devs
);
6358 EXPORT_SYMBOL_GPL(nfs4_proc_getdevicelist
);
6361 _nfs4_proc_getdeviceinfo(struct nfs_server
*server
, struct pnfs_device
*pdev
)
6363 struct nfs4_getdeviceinfo_args args
= {
6366 struct nfs4_getdeviceinfo_res res
= {
6369 struct rpc_message msg
= {
6370 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GETDEVICEINFO
],
6376 dprintk("--> %s\n", __func__
);
6377 status
= nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
6378 dprintk("<-- %s status=%d\n", __func__
, status
);
6383 int nfs4_proc_getdeviceinfo(struct nfs_server
*server
, struct pnfs_device
*pdev
)
6385 struct nfs4_exception exception
= { };
6389 err
= nfs4_handle_exception(server
,
6390 _nfs4_proc_getdeviceinfo(server
, pdev
),
6392 } while (exception
.retry
);
6395 EXPORT_SYMBOL_GPL(nfs4_proc_getdeviceinfo
);
6397 static void nfs4_layoutcommit_prepare(struct rpc_task
*task
, void *calldata
)
6399 struct nfs4_layoutcommit_data
*data
= calldata
;
6400 struct nfs_server
*server
= NFS_SERVER(data
->args
.inode
);
6401 struct nfs4_session
*session
= nfs4_get_session(server
);
6403 nfs41_setup_sequence(session
,
6404 &data
->args
.seq_args
,
6410 nfs4_layoutcommit_done(struct rpc_task
*task
, void *calldata
)
6412 struct nfs4_layoutcommit_data
*data
= calldata
;
6413 struct nfs_server
*server
= NFS_SERVER(data
->args
.inode
);
6415 if (!nfs41_sequence_done(task
, &data
->res
.seq_res
))
6418 switch (task
->tk_status
) { /* Just ignore these failures */
6419 case -NFS4ERR_DELEG_REVOKED
: /* layout was recalled */
6420 case -NFS4ERR_BADIOMODE
: /* no IOMODE_RW layout for range */
6421 case -NFS4ERR_BADLAYOUT
: /* no layout */
6422 case -NFS4ERR_GRACE
: /* loca_recalim always false */
6423 task
->tk_status
= 0;
6426 nfs_post_op_update_inode_force_wcc(data
->args
.inode
,
6430 if (nfs4_async_handle_error(task
, server
, NULL
) == -EAGAIN
) {
6431 rpc_restart_call_prepare(task
);
6437 static void nfs4_layoutcommit_release(void *calldata
)
6439 struct nfs4_layoutcommit_data
*data
= calldata
;
6441 pnfs_cleanup_layoutcommit(data
);
6442 put_rpccred(data
->cred
);
6446 static const struct rpc_call_ops nfs4_layoutcommit_ops
= {
6447 .rpc_call_prepare
= nfs4_layoutcommit_prepare
,
6448 .rpc_call_done
= nfs4_layoutcommit_done
,
6449 .rpc_release
= nfs4_layoutcommit_release
,
6453 nfs4_proc_layoutcommit(struct nfs4_layoutcommit_data
*data
, bool sync
)
6455 struct rpc_message msg
= {
6456 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LAYOUTCOMMIT
],
6457 .rpc_argp
= &data
->args
,
6458 .rpc_resp
= &data
->res
,
6459 .rpc_cred
= data
->cred
,
6461 struct rpc_task_setup task_setup_data
= {
6462 .task
= &data
->task
,
6463 .rpc_client
= NFS_CLIENT(data
->args
.inode
),
6464 .rpc_message
= &msg
,
6465 .callback_ops
= &nfs4_layoutcommit_ops
,
6466 .callback_data
= data
,
6467 .flags
= RPC_TASK_ASYNC
,
6469 struct rpc_task
*task
;
6472 dprintk("NFS: %4d initiating layoutcommit call. sync %d "
6473 "lbw: %llu inode %lu\n",
6474 data
->task
.tk_pid
, sync
,
6475 data
->args
.lastbytewritten
,
6476 data
->args
.inode
->i_ino
);
6478 nfs41_init_sequence(&data
->args
.seq_args
, &data
->res
.seq_res
, 1);
6479 task
= rpc_run_task(&task_setup_data
);
6481 return PTR_ERR(task
);
6484 status
= nfs4_wait_for_completion_rpc_task(task
);
6487 status
= task
->tk_status
;
6489 dprintk("%s: status %d\n", __func__
, status
);
6495 _nfs41_proc_secinfo_no_name(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
6496 struct nfs_fsinfo
*info
, struct nfs4_secinfo_flavors
*flavors
)
6498 struct nfs41_secinfo_no_name_args args
= {
6499 .style
= SECINFO_STYLE_CURRENT_FH
,
6501 struct nfs4_secinfo_res res
= {
6504 struct rpc_message msg
= {
6505 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SECINFO_NO_NAME
],
6509 return nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
6513 nfs41_proc_secinfo_no_name(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
6514 struct nfs_fsinfo
*info
, struct nfs4_secinfo_flavors
*flavors
)
6516 struct nfs4_exception exception
= { };
6519 err
= _nfs41_proc_secinfo_no_name(server
, fhandle
, info
, flavors
);
6522 case -NFS4ERR_WRONGSEC
:
6523 case -NFS4ERR_NOTSUPP
:
6526 err
= nfs4_handle_exception(server
, err
, &exception
);
6528 } while (exception
.retry
);
6534 nfs41_find_root_sec(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
6535 struct nfs_fsinfo
*info
)
6539 rpc_authflavor_t flavor
;
6540 struct nfs4_secinfo_flavors
*flavors
;
6542 page
= alloc_page(GFP_KERNEL
);
6548 flavors
= page_address(page
);
6549 err
= nfs41_proc_secinfo_no_name(server
, fhandle
, info
, flavors
);
6552 * Fall back on "guess and check" method if
6553 * the server doesn't support SECINFO_NO_NAME
6555 if (err
== -NFS4ERR_WRONGSEC
|| err
== -NFS4ERR_NOTSUPP
) {
6556 err
= nfs4_find_root_sec(server
, fhandle
, info
);
6562 flavor
= nfs_find_best_sec(flavors
);
6564 err
= nfs4_lookup_root_sec(server
, fhandle
, info
, flavor
);
6574 static int _nfs41_test_stateid(struct nfs_server
*server
, nfs4_stateid
*stateid
)
6577 struct nfs41_test_stateid_args args
= {
6580 struct nfs41_test_stateid_res res
;
6581 struct rpc_message msg
= {
6582 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_TEST_STATEID
],
6587 dprintk("NFS call test_stateid %p\n", stateid
);
6588 nfs41_init_sequence(&args
.seq_args
, &res
.seq_res
, 0);
6589 nfs4_set_sequence_privileged(&args
.seq_args
);
6590 status
= nfs4_call_sync_sequence(server
->client
, server
, &msg
,
6591 &args
.seq_args
, &res
.seq_res
);
6592 if (status
!= NFS_OK
) {
6593 dprintk("NFS reply test_stateid: failed, %d\n", status
);
6596 dprintk("NFS reply test_stateid: succeeded, %d\n", -res
.status
);
6601 * nfs41_test_stateid - perform a TEST_STATEID operation
6603 * @server: server / transport on which to perform the operation
6604 * @stateid: state ID to test
6606 * Returns NFS_OK if the server recognizes that "stateid" is valid.
6607 * Otherwise a negative NFS4ERR value is returned if the operation
6608 * failed or the state ID is not currently valid.
6610 static int nfs41_test_stateid(struct nfs_server
*server
, nfs4_stateid
*stateid
)
6612 struct nfs4_exception exception
= { };
6615 err
= _nfs41_test_stateid(server
, stateid
);
6616 if (err
!= -NFS4ERR_DELAY
)
6618 nfs4_handle_exception(server
, err
, &exception
);
6619 } while (exception
.retry
);
6623 static int _nfs4_free_stateid(struct nfs_server
*server
, nfs4_stateid
*stateid
)
6625 struct nfs41_free_stateid_args args
= {
6628 struct nfs41_free_stateid_res res
;
6629 struct rpc_message msg
= {
6630 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_FREE_STATEID
],
6636 dprintk("NFS call free_stateid %p\n", stateid
);
6637 nfs41_init_sequence(&args
.seq_args
, &res
.seq_res
, 0);
6638 nfs4_set_sequence_privileged(&args
.seq_args
);
6639 status
= nfs4_call_sync_sequence(server
->client
, server
, &msg
,
6640 &args
.seq_args
, &res
.seq_res
);
6641 dprintk("NFS reply free_stateid: %d\n", status
);
6646 * nfs41_free_stateid - perform a FREE_STATEID operation
6648 * @server: server / transport on which to perform the operation
6649 * @stateid: state ID to release
6651 * Returns NFS_OK if the server freed "stateid". Otherwise a
6652 * negative NFS4ERR value is returned.
6654 static int nfs41_free_stateid(struct nfs_server
*server
, nfs4_stateid
*stateid
)
6656 struct nfs4_exception exception
= { };
6659 err
= _nfs4_free_stateid(server
, stateid
);
6660 if (err
!= -NFS4ERR_DELAY
)
6662 nfs4_handle_exception(server
, err
, &exception
);
6663 } while (exception
.retry
);
6667 static bool nfs41_match_stateid(const nfs4_stateid
*s1
,
6668 const nfs4_stateid
*s2
)
6670 if (memcmp(s1
->other
, s2
->other
, sizeof(s1
->other
)) != 0)
6673 if (s1
->seqid
== s2
->seqid
)
6675 if (s1
->seqid
== 0 || s2
->seqid
== 0)
6681 #endif /* CONFIG_NFS_V4_1 */
6683 static bool nfs4_match_stateid(const nfs4_stateid
*s1
,
6684 const nfs4_stateid
*s2
)
6686 return nfs4_stateid_match(s1
, s2
);
6690 static const struct nfs4_state_recovery_ops nfs40_reboot_recovery_ops
= {
6691 .owner_flag_bit
= NFS_OWNER_RECLAIM_REBOOT
,
6692 .state_flag_bit
= NFS_STATE_RECLAIM_REBOOT
,
6693 .recover_open
= nfs4_open_reclaim
,
6694 .recover_lock
= nfs4_lock_reclaim
,
6695 .establish_clid
= nfs4_init_clientid
,
6696 .get_clid_cred
= nfs4_get_setclientid_cred
,
6697 .detect_trunking
= nfs40_discover_server_trunking
,
6700 #if defined(CONFIG_NFS_V4_1)
6701 static const struct nfs4_state_recovery_ops nfs41_reboot_recovery_ops
= {
6702 .owner_flag_bit
= NFS_OWNER_RECLAIM_REBOOT
,
6703 .state_flag_bit
= NFS_STATE_RECLAIM_REBOOT
,
6704 .recover_open
= nfs4_open_reclaim
,
6705 .recover_lock
= nfs4_lock_reclaim
,
6706 .establish_clid
= nfs41_init_clientid
,
6707 .get_clid_cred
= nfs4_get_exchange_id_cred
,
6708 .reclaim_complete
= nfs41_proc_reclaim_complete
,
6709 .detect_trunking
= nfs41_discover_server_trunking
,
6711 #endif /* CONFIG_NFS_V4_1 */
6713 static const struct nfs4_state_recovery_ops nfs40_nograce_recovery_ops
= {
6714 .owner_flag_bit
= NFS_OWNER_RECLAIM_NOGRACE
,
6715 .state_flag_bit
= NFS_STATE_RECLAIM_NOGRACE
,
6716 .recover_open
= nfs4_open_expired
,
6717 .recover_lock
= nfs4_lock_expired
,
6718 .establish_clid
= nfs4_init_clientid
,
6719 .get_clid_cred
= nfs4_get_setclientid_cred
,
6722 #if defined(CONFIG_NFS_V4_1)
6723 static const struct nfs4_state_recovery_ops nfs41_nograce_recovery_ops
= {
6724 .owner_flag_bit
= NFS_OWNER_RECLAIM_NOGRACE
,
6725 .state_flag_bit
= NFS_STATE_RECLAIM_NOGRACE
,
6726 .recover_open
= nfs41_open_expired
,
6727 .recover_lock
= nfs41_lock_expired
,
6728 .establish_clid
= nfs41_init_clientid
,
6729 .get_clid_cred
= nfs4_get_exchange_id_cred
,
6731 #endif /* CONFIG_NFS_V4_1 */
6733 static const struct nfs4_state_maintenance_ops nfs40_state_renewal_ops
= {
6734 .sched_state_renewal
= nfs4_proc_async_renew
,
6735 .get_state_renewal_cred_locked
= nfs4_get_renew_cred_locked
,
6736 .renew_lease
= nfs4_proc_renew
,
6739 #if defined(CONFIG_NFS_V4_1)
6740 static const struct nfs4_state_maintenance_ops nfs41_state_renewal_ops
= {
6741 .sched_state_renewal
= nfs41_proc_async_sequence
,
6742 .get_state_renewal_cred_locked
= nfs4_get_machine_cred_locked
,
6743 .renew_lease
= nfs4_proc_sequence
,
6747 static const struct nfs4_minor_version_ops nfs_v4_0_minor_ops
= {
6749 .call_sync
= _nfs4_call_sync
,
6750 .match_stateid
= nfs4_match_stateid
,
6751 .find_root_sec
= nfs4_find_root_sec
,
6752 .reboot_recovery_ops
= &nfs40_reboot_recovery_ops
,
6753 .nograce_recovery_ops
= &nfs40_nograce_recovery_ops
,
6754 .state_renewal_ops
= &nfs40_state_renewal_ops
,
6757 #if defined(CONFIG_NFS_V4_1)
6758 static const struct nfs4_minor_version_ops nfs_v4_1_minor_ops
= {
6760 .call_sync
= nfs4_call_sync_sequence
,
6761 .match_stateid
= nfs41_match_stateid
,
6762 .find_root_sec
= nfs41_find_root_sec
,
6763 .reboot_recovery_ops
= &nfs41_reboot_recovery_ops
,
6764 .nograce_recovery_ops
= &nfs41_nograce_recovery_ops
,
6765 .state_renewal_ops
= &nfs41_state_renewal_ops
,
6769 const struct nfs4_minor_version_ops
*nfs_v4_minor_ops
[] = {
6770 [0] = &nfs_v4_0_minor_ops
,
6771 #if defined(CONFIG_NFS_V4_1)
6772 [1] = &nfs_v4_1_minor_ops
,
6776 const struct inode_operations nfs4_dir_inode_operations
= {
6777 .create
= nfs_create
,
6778 .lookup
= nfs_lookup
,
6779 .atomic_open
= nfs_atomic_open
,
6781 .unlink
= nfs_unlink
,
6782 .symlink
= nfs_symlink
,
6786 .rename
= nfs_rename
,
6787 .permission
= nfs_permission
,
6788 .getattr
= nfs_getattr
,
6789 .setattr
= nfs_setattr
,
6790 .getxattr
= generic_getxattr
,
6791 .setxattr
= generic_setxattr
,
6792 .listxattr
= generic_listxattr
,
6793 .removexattr
= generic_removexattr
,
6796 static const struct inode_operations nfs4_file_inode_operations
= {
6797 .permission
= nfs_permission
,
6798 .getattr
= nfs_getattr
,
6799 .setattr
= nfs_setattr
,
6800 .getxattr
= generic_getxattr
,
6801 .setxattr
= generic_setxattr
,
6802 .listxattr
= generic_listxattr
,
6803 .removexattr
= generic_removexattr
,
6806 const struct nfs_rpc_ops nfs_v4_clientops
= {
6807 .version
= 4, /* protocol version */
6808 .dentry_ops
= &nfs4_dentry_operations
,
6809 .dir_inode_ops
= &nfs4_dir_inode_operations
,
6810 .file_inode_ops
= &nfs4_file_inode_operations
,
6811 .file_ops
= &nfs4_file_operations
,
6812 .getroot
= nfs4_proc_get_root
,
6813 .submount
= nfs4_submount
,
6814 .try_mount
= nfs4_try_mount
,
6815 .getattr
= nfs4_proc_getattr
,
6816 .setattr
= nfs4_proc_setattr
,
6817 .lookup
= nfs4_proc_lookup
,
6818 .access
= nfs4_proc_access
,
6819 .readlink
= nfs4_proc_readlink
,
6820 .create
= nfs4_proc_create
,
6821 .remove
= nfs4_proc_remove
,
6822 .unlink_setup
= nfs4_proc_unlink_setup
,
6823 .unlink_rpc_prepare
= nfs4_proc_unlink_rpc_prepare
,
6824 .unlink_done
= nfs4_proc_unlink_done
,
6825 .rename
= nfs4_proc_rename
,
6826 .rename_setup
= nfs4_proc_rename_setup
,
6827 .rename_rpc_prepare
= nfs4_proc_rename_rpc_prepare
,
6828 .rename_done
= nfs4_proc_rename_done
,
6829 .link
= nfs4_proc_link
,
6830 .symlink
= nfs4_proc_symlink
,
6831 .mkdir
= nfs4_proc_mkdir
,
6832 .rmdir
= nfs4_proc_remove
,
6833 .readdir
= nfs4_proc_readdir
,
6834 .mknod
= nfs4_proc_mknod
,
6835 .statfs
= nfs4_proc_statfs
,
6836 .fsinfo
= nfs4_proc_fsinfo
,
6837 .pathconf
= nfs4_proc_pathconf
,
6838 .set_capabilities
= nfs4_server_capabilities
,
6839 .decode_dirent
= nfs4_decode_dirent
,
6840 .read_setup
= nfs4_proc_read_setup
,
6841 .read_pageio_init
= pnfs_pageio_init_read
,
6842 .read_rpc_prepare
= nfs4_proc_read_rpc_prepare
,
6843 .read_done
= nfs4_read_done
,
6844 .write_setup
= nfs4_proc_write_setup
,
6845 .write_pageio_init
= pnfs_pageio_init_write
,
6846 .write_rpc_prepare
= nfs4_proc_write_rpc_prepare
,
6847 .write_done
= nfs4_write_done
,
6848 .commit_setup
= nfs4_proc_commit_setup
,
6849 .commit_rpc_prepare
= nfs4_proc_commit_rpc_prepare
,
6850 .commit_done
= nfs4_commit_done
,
6851 .lock
= nfs4_proc_lock
,
6852 .clear_acl_cache
= nfs4_zap_acl_attr
,
6853 .close_context
= nfs4_close_context
,
6854 .open_context
= nfs4_atomic_open
,
6855 .have_delegation
= nfs4_have_delegation
,
6856 .return_delegation
= nfs4_inode_return_delegation
,
6857 .alloc_client
= nfs4_alloc_client
,
6858 .init_client
= nfs4_init_client
,
6859 .free_client
= nfs4_free_client
,
6860 .create_server
= nfs4_create_server
,
6861 .clone_server
= nfs_clone_server
,
6864 static const struct xattr_handler nfs4_xattr_nfs4_acl_handler
= {
6865 .prefix
= XATTR_NAME_NFSV4_ACL
,
6866 .list
= nfs4_xattr_list_nfs4_acl
,
6867 .get
= nfs4_xattr_get_nfs4_acl
,
6868 .set
= nfs4_xattr_set_nfs4_acl
,
6871 const struct xattr_handler
*nfs4_xattr_handlers
[] = {
6872 &nfs4_xattr_nfs4_acl_handler
,