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 nfs4_schedule_stateid_recovery(server
, state
);
299 goto wait_on_recovery
;
300 case -NFS4ERR_DELEG_REVOKED
:
301 case -NFS4ERR_ADMIN_REVOKED
:
302 case -NFS4ERR_BAD_STATEID
:
305 nfs_remove_bad_delegation(state
->inode
);
306 nfs4_schedule_stateid_recovery(server
, state
);
307 goto wait_on_recovery
;
308 case -NFS4ERR_EXPIRED
:
310 nfs4_schedule_stateid_recovery(server
, state
);
311 case -NFS4ERR_STALE_STATEID
:
312 case -NFS4ERR_STALE_CLIENTID
:
313 nfs4_schedule_lease_recovery(clp
);
314 goto wait_on_recovery
;
315 #if defined(CONFIG_NFS_V4_1)
316 case -NFS4ERR_BADSESSION
:
317 case -NFS4ERR_BADSLOT
:
318 case -NFS4ERR_BAD_HIGH_SLOT
:
319 case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION
:
320 case -NFS4ERR_DEADSESSION
:
321 case -NFS4ERR_SEQ_FALSE_RETRY
:
322 case -NFS4ERR_SEQ_MISORDERED
:
323 dprintk("%s ERROR: %d Reset session\n", __func__
,
325 nfs4_schedule_session_recovery(clp
->cl_session
, errorcode
);
326 goto wait_on_recovery
;
327 #endif /* defined(CONFIG_NFS_V4_1) */
328 case -NFS4ERR_FILE_OPEN
:
329 if (exception
->timeout
> HZ
) {
330 /* We have retried a decent amount, time to
338 ret
= nfs4_delay(server
->client
, &exception
->timeout
);
341 case -NFS4ERR_RETRY_UNCACHED_REP
:
342 case -NFS4ERR_OLD_STATEID
:
343 exception
->retry
= 1;
345 case -NFS4ERR_BADOWNER
:
346 /* The following works around a Linux server bug! */
347 case -NFS4ERR_BADNAME
:
348 if (server
->caps
& NFS_CAP_UIDGID_NOMAP
) {
349 server
->caps
&= ~NFS_CAP_UIDGID_NOMAP
;
350 exception
->retry
= 1;
351 printk(KERN_WARNING
"NFS: v4 server %s "
352 "does not accept raw "
354 "Reenabling the idmapper.\n",
355 server
->nfs_client
->cl_hostname
);
358 /* We failed to handle the error */
359 return nfs4_map_errors(ret
);
361 ret
= nfs4_wait_clnt_recover(clp
);
363 exception
->retry
= 1;
368 static void do_renew_lease(struct nfs_client
*clp
, unsigned long timestamp
)
370 spin_lock(&clp
->cl_lock
);
371 if (time_before(clp
->cl_last_renewal
,timestamp
))
372 clp
->cl_last_renewal
= timestamp
;
373 spin_unlock(&clp
->cl_lock
);
376 static void renew_lease(const struct nfs_server
*server
, unsigned long timestamp
)
378 do_renew_lease(server
->nfs_client
, timestamp
);
381 #if defined(CONFIG_NFS_V4_1)
383 static void nfs41_sequence_free_slot(struct nfs4_sequence_res
*res
)
385 struct nfs4_session
*session
;
386 struct nfs4_slot_table
*tbl
;
387 bool send_new_highest_used_slotid
= false;
390 /* just wake up the next guy waiting since
391 * we may have not consumed a slot after all */
392 dprintk("%s: No slot\n", __func__
);
395 tbl
= res
->sr_slot
->table
;
396 session
= tbl
->session
;
398 spin_lock(&tbl
->slot_tbl_lock
);
399 /* Be nice to the server: try to ensure that the last transmitted
400 * value for highest_user_slotid <= target_highest_slotid
402 if (tbl
->highest_used_slotid
> tbl
->target_highest_slotid
)
403 send_new_highest_used_slotid
= true;
405 if (nfs41_wake_and_assign_slot(tbl
, res
->sr_slot
)) {
406 send_new_highest_used_slotid
= false;
409 nfs4_free_slot(tbl
, res
->sr_slot
);
411 if (tbl
->highest_used_slotid
!= NFS4_NO_SLOT
)
412 send_new_highest_used_slotid
= false;
414 spin_unlock(&tbl
->slot_tbl_lock
);
416 if (send_new_highest_used_slotid
)
417 nfs41_server_notify_highest_slotid_update(session
->clp
);
420 static int nfs41_sequence_done(struct rpc_task
*task
, struct nfs4_sequence_res
*res
)
422 struct nfs4_session
*session
;
423 struct nfs4_slot
*slot
;
424 struct nfs_client
*clp
;
425 bool interrupted
= false;
428 /* don't increment the sequence number if the task wasn't sent */
429 if (!RPC_WAS_SENT(task
))
433 session
= slot
->table
->session
;
435 if (slot
->interrupted
) {
436 slot
->interrupted
= 0;
440 /* Check the SEQUENCE operation status */
441 switch (res
->sr_status
) {
443 /* Update the slot's sequence and clientid lease timer */
446 do_renew_lease(clp
, res
->sr_timestamp
);
447 /* Check sequence flags */
448 if (res
->sr_status_flags
!= 0)
449 nfs4_schedule_lease_recovery(clp
);
450 nfs41_update_target_slotid(slot
->table
, slot
, res
);
454 * sr_status remains 1 if an RPC level error occurred.
455 * The server may or may not have processed the sequence
457 * Mark the slot as having hosted an interrupted RPC call.
459 slot
->interrupted
= 1;
462 /* The server detected a resend of the RPC call and
463 * returned NFS4ERR_DELAY as per Section 2.10.6.2
466 dprintk("%s: slot=%u seq=%u: Operation in progress\n",
471 case -NFS4ERR_BADSLOT
:
473 * The slot id we used was probably retired. Try again
474 * using a different slot id.
477 case -NFS4ERR_SEQ_MISORDERED
:
479 * Was the last operation on this sequence interrupted?
480 * If so, retry after bumping the sequence number.
487 * Could this slot have been previously retired?
488 * If so, then the server may be expecting seq_nr = 1!
490 if (slot
->seq_nr
!= 1) {
495 case -NFS4ERR_SEQ_FALSE_RETRY
:
499 /* Just update the slot sequence no. */
503 /* The session may be reset by one of the error handlers. */
504 dprintk("%s: Error %d free the slot \n", __func__
, res
->sr_status
);
505 nfs41_sequence_free_slot(res
);
508 if (rpc_restart_call_prepare(task
)) {
514 if (!rpc_restart_call(task
))
516 rpc_delay(task
, NFS4_POLL_RETRY_MAX
);
520 static int nfs4_sequence_done(struct rpc_task
*task
,
521 struct nfs4_sequence_res
*res
)
523 if (res
->sr_slot
== NULL
)
525 return nfs41_sequence_done(task
, res
);
528 static void nfs41_init_sequence(struct nfs4_sequence_args
*args
,
529 struct nfs4_sequence_res
*res
, int cache_reply
)
531 args
->sa_slot
= NULL
;
532 args
->sa_cache_this
= 0;
533 args
->sa_privileged
= 0;
535 args
->sa_cache_this
= 1;
539 static void nfs4_set_sequence_privileged(struct nfs4_sequence_args
*args
)
541 args
->sa_privileged
= 1;
544 int nfs41_setup_sequence(struct nfs4_session
*session
,
545 struct nfs4_sequence_args
*args
,
546 struct nfs4_sequence_res
*res
,
547 struct rpc_task
*task
)
549 struct nfs4_slot
*slot
;
550 struct nfs4_slot_table
*tbl
;
552 dprintk("--> %s\n", __func__
);
553 /* slot already allocated? */
554 if (res
->sr_slot
!= NULL
)
557 tbl
= &session
->fc_slot_table
;
559 task
->tk_timeout
= 0;
561 spin_lock(&tbl
->slot_tbl_lock
);
562 if (test_bit(NFS4_SESSION_DRAINING
, &session
->session_state
) &&
563 !args
->sa_privileged
) {
564 /* The state manager will wait until the slot table is empty */
565 dprintk("%s session is draining\n", __func__
);
569 slot
= nfs4_alloc_slot(tbl
);
571 /* If out of memory, try again in 1/4 second */
572 if (slot
== ERR_PTR(-ENOMEM
))
573 task
->tk_timeout
= HZ
>> 2;
574 dprintk("<-- %s: no free slots\n", __func__
);
577 spin_unlock(&tbl
->slot_tbl_lock
);
579 args
->sa_slot
= slot
;
581 dprintk("<-- %s slotid=%d seqid=%d\n", __func__
,
582 slot
->slot_nr
, slot
->seq_nr
);
585 res
->sr_timestamp
= jiffies
;
586 res
->sr_status_flags
= 0;
588 * sr_status is only set in decode_sequence, and so will remain
589 * set to 1 if an rpc level failure occurs.
593 rpc_call_start(task
);
596 /* Privileged tasks are queued with top priority */
597 if (args
->sa_privileged
)
598 rpc_sleep_on_priority(&tbl
->slot_tbl_waitq
, task
,
599 NULL
, RPC_PRIORITY_PRIVILEGED
);
601 rpc_sleep_on(&tbl
->slot_tbl_waitq
, task
, NULL
);
602 spin_unlock(&tbl
->slot_tbl_lock
);
605 EXPORT_SYMBOL_GPL(nfs41_setup_sequence
);
607 int nfs4_setup_sequence(const struct nfs_server
*server
,
608 struct nfs4_sequence_args
*args
,
609 struct nfs4_sequence_res
*res
,
610 struct rpc_task
*task
)
612 struct nfs4_session
*session
= nfs4_get_session(server
);
615 if (session
== NULL
) {
616 rpc_call_start(task
);
620 dprintk("--> %s clp %p session %p sr_slot %d\n",
621 __func__
, session
->clp
, session
, res
->sr_slot
?
622 res
->sr_slot
->slot_nr
: -1);
624 ret
= nfs41_setup_sequence(session
, args
, res
, task
);
626 dprintk("<-- %s status=%d\n", __func__
, ret
);
630 struct nfs41_call_sync_data
{
631 const struct nfs_server
*seq_server
;
632 struct nfs4_sequence_args
*seq_args
;
633 struct nfs4_sequence_res
*seq_res
;
636 static void nfs41_call_sync_prepare(struct rpc_task
*task
, void *calldata
)
638 struct nfs41_call_sync_data
*data
= calldata
;
639 struct nfs4_session
*session
= nfs4_get_session(data
->seq_server
);
641 dprintk("--> %s data->seq_server %p\n", __func__
, data
->seq_server
);
643 nfs41_setup_sequence(session
, data
->seq_args
, data
->seq_res
, task
);
646 static void nfs41_call_sync_done(struct rpc_task
*task
, void *calldata
)
648 struct nfs41_call_sync_data
*data
= calldata
;
650 nfs41_sequence_done(task
, data
->seq_res
);
653 static const struct rpc_call_ops nfs41_call_sync_ops
= {
654 .rpc_call_prepare
= nfs41_call_sync_prepare
,
655 .rpc_call_done
= nfs41_call_sync_done
,
658 static int nfs4_call_sync_sequence(struct rpc_clnt
*clnt
,
659 struct nfs_server
*server
,
660 struct rpc_message
*msg
,
661 struct nfs4_sequence_args
*args
,
662 struct nfs4_sequence_res
*res
)
665 struct rpc_task
*task
;
666 struct nfs41_call_sync_data data
= {
667 .seq_server
= server
,
671 struct rpc_task_setup task_setup
= {
674 .callback_ops
= &nfs41_call_sync_ops
,
675 .callback_data
= &data
678 task
= rpc_run_task(&task_setup
);
682 ret
= task
->tk_status
;
690 void nfs41_init_sequence(struct nfs4_sequence_args
*args
,
691 struct nfs4_sequence_res
*res
, int cache_reply
)
695 static void nfs4_set_sequence_privileged(struct nfs4_sequence_args
*args
)
700 static int nfs4_sequence_done(struct rpc_task
*task
,
701 struct nfs4_sequence_res
*res
)
705 #endif /* CONFIG_NFS_V4_1 */
708 int _nfs4_call_sync(struct rpc_clnt
*clnt
,
709 struct nfs_server
*server
,
710 struct rpc_message
*msg
,
711 struct nfs4_sequence_args
*args
,
712 struct nfs4_sequence_res
*res
)
714 return rpc_call_sync(clnt
, msg
, 0);
718 int nfs4_call_sync(struct rpc_clnt
*clnt
,
719 struct nfs_server
*server
,
720 struct rpc_message
*msg
,
721 struct nfs4_sequence_args
*args
,
722 struct nfs4_sequence_res
*res
,
725 nfs41_init_sequence(args
, res
, cache_reply
);
726 return server
->nfs_client
->cl_mvops
->call_sync(clnt
, server
, msg
,
730 static void update_changeattr(struct inode
*dir
, struct nfs4_change_info
*cinfo
)
732 struct nfs_inode
*nfsi
= NFS_I(dir
);
734 spin_lock(&dir
->i_lock
);
735 nfsi
->cache_validity
|= NFS_INO_INVALID_ATTR
|NFS_INO_INVALID_DATA
;
736 if (!cinfo
->atomic
|| cinfo
->before
!= dir
->i_version
)
737 nfs_force_lookup_revalidate(dir
);
738 dir
->i_version
= cinfo
->after
;
739 nfs_fscache_invalidate(dir
);
740 spin_unlock(&dir
->i_lock
);
743 struct nfs4_opendata
{
745 struct nfs_openargs o_arg
;
746 struct nfs_openres o_res
;
747 struct nfs_open_confirmargs c_arg
;
748 struct nfs_open_confirmres c_res
;
749 struct nfs4_string owner_name
;
750 struct nfs4_string group_name
;
751 struct nfs_fattr f_attr
;
753 struct dentry
*dentry
;
754 struct nfs4_state_owner
*owner
;
755 struct nfs4_state
*state
;
757 unsigned long timestamp
;
758 unsigned int rpc_done
: 1;
764 static void nfs4_init_opendata_res(struct nfs4_opendata
*p
)
766 p
->o_res
.f_attr
= &p
->f_attr
;
767 p
->o_res
.seqid
= p
->o_arg
.seqid
;
768 p
->c_res
.seqid
= p
->c_arg
.seqid
;
769 p
->o_res
.server
= p
->o_arg
.server
;
770 p
->o_res
.access_request
= p
->o_arg
.access
;
771 nfs_fattr_init(&p
->f_attr
);
772 nfs_fattr_init_names(&p
->f_attr
, &p
->owner_name
, &p
->group_name
);
775 static struct nfs4_opendata
*nfs4_opendata_alloc(struct dentry
*dentry
,
776 struct nfs4_state_owner
*sp
, fmode_t fmode
, int flags
,
777 const struct iattr
*attrs
,
780 struct dentry
*parent
= dget_parent(dentry
);
781 struct inode
*dir
= parent
->d_inode
;
782 struct nfs_server
*server
= NFS_SERVER(dir
);
783 struct nfs4_opendata
*p
;
785 p
= kzalloc(sizeof(*p
), gfp_mask
);
788 p
->o_arg
.seqid
= nfs_alloc_seqid(&sp
->so_seqid
, gfp_mask
);
789 if (p
->o_arg
.seqid
== NULL
)
791 nfs_sb_active(dentry
->d_sb
);
792 p
->dentry
= dget(dentry
);
795 atomic_inc(&sp
->so_count
);
796 p
->o_arg
.fh
= NFS_FH(dir
);
797 p
->o_arg
.open_flags
= flags
;
798 p
->o_arg
.fmode
= fmode
& (FMODE_READ
|FMODE_WRITE
);
799 /* don't put an ACCESS op in OPEN compound if O_EXCL, because ACCESS
800 * will return permission denied for all bits until close */
801 if (!(flags
& O_EXCL
)) {
802 /* ask server to check for all possible rights as results
804 p
->o_arg
.access
= NFS4_ACCESS_READ
| NFS4_ACCESS_MODIFY
|
805 NFS4_ACCESS_EXTEND
| NFS4_ACCESS_EXECUTE
;
807 p
->o_arg
.clientid
= server
->nfs_client
->cl_clientid
;
808 p
->o_arg
.id
.create_time
= ktime_to_ns(sp
->so_seqid
.create_time
);
809 p
->o_arg
.id
.uniquifier
= sp
->so_seqid
.owner_id
;
810 p
->o_arg
.name
= &dentry
->d_name
;
811 p
->o_arg
.server
= server
;
812 p
->o_arg
.bitmask
= server
->attr_bitmask
;
813 p
->o_arg
.open_bitmap
= &nfs4_fattr_bitmap
[0];
814 p
->o_arg
.claim
= NFS4_OPEN_CLAIM_NULL
;
815 if (attrs
!= NULL
&& attrs
->ia_valid
!= 0) {
818 p
->o_arg
.u
.attrs
= &p
->attrs
;
819 memcpy(&p
->attrs
, attrs
, sizeof(p
->attrs
));
822 verf
[1] = current
->pid
;
823 memcpy(p
->o_arg
.u
.verifier
.data
, verf
,
824 sizeof(p
->o_arg
.u
.verifier
.data
));
826 p
->c_arg
.fh
= &p
->o_res
.fh
;
827 p
->c_arg
.stateid
= &p
->o_res
.stateid
;
828 p
->c_arg
.seqid
= p
->o_arg
.seqid
;
829 nfs4_init_opendata_res(p
);
839 static void nfs4_opendata_free(struct kref
*kref
)
841 struct nfs4_opendata
*p
= container_of(kref
,
842 struct nfs4_opendata
, kref
);
843 struct super_block
*sb
= p
->dentry
->d_sb
;
845 nfs_free_seqid(p
->o_arg
.seqid
);
846 if (p
->state
!= NULL
)
847 nfs4_put_open_state(p
->state
);
848 nfs4_put_state_owner(p
->owner
);
852 nfs_fattr_free_names(&p
->f_attr
);
856 static void nfs4_opendata_put(struct nfs4_opendata
*p
)
859 kref_put(&p
->kref
, nfs4_opendata_free
);
862 static int nfs4_wait_for_completion_rpc_task(struct rpc_task
*task
)
866 ret
= rpc_wait_for_completion_task(task
);
870 static int can_open_cached(struct nfs4_state
*state
, fmode_t mode
, int open_mode
)
874 if (open_mode
& (O_EXCL
|O_TRUNC
))
876 switch (mode
& (FMODE_READ
|FMODE_WRITE
)) {
878 ret
|= test_bit(NFS_O_RDONLY_STATE
, &state
->flags
) != 0
879 && state
->n_rdonly
!= 0;
882 ret
|= test_bit(NFS_O_WRONLY_STATE
, &state
->flags
) != 0
883 && state
->n_wronly
!= 0;
885 case FMODE_READ
|FMODE_WRITE
:
886 ret
|= test_bit(NFS_O_RDWR_STATE
, &state
->flags
) != 0
887 && state
->n_rdwr
!= 0;
893 static int can_open_delegated(struct nfs_delegation
*delegation
, fmode_t fmode
)
895 if (delegation
== NULL
)
897 if ((delegation
->type
& fmode
) != fmode
)
899 if (test_bit(NFS_DELEGATION_NEED_RECLAIM
, &delegation
->flags
))
901 if (test_bit(NFS_DELEGATION_RETURNING
, &delegation
->flags
))
903 nfs_mark_delegation_referenced(delegation
);
907 static void update_open_stateflags(struct nfs4_state
*state
, fmode_t fmode
)
916 case FMODE_READ
|FMODE_WRITE
:
919 nfs4_state_set_mode_locked(state
, state
->state
| fmode
);
922 static void nfs_set_open_stateid_locked(struct nfs4_state
*state
, nfs4_stateid
*stateid
, fmode_t fmode
)
924 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) == 0)
925 nfs4_stateid_copy(&state
->stateid
, stateid
);
926 nfs4_stateid_copy(&state
->open_stateid
, stateid
);
929 set_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
932 set_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
934 case FMODE_READ
|FMODE_WRITE
:
935 set_bit(NFS_O_RDWR_STATE
, &state
->flags
);
939 static void nfs_set_open_stateid(struct nfs4_state
*state
, nfs4_stateid
*stateid
, fmode_t fmode
)
941 write_seqlock(&state
->seqlock
);
942 nfs_set_open_stateid_locked(state
, stateid
, fmode
);
943 write_sequnlock(&state
->seqlock
);
946 static void __update_open_stateid(struct nfs4_state
*state
, nfs4_stateid
*open_stateid
, const nfs4_stateid
*deleg_stateid
, fmode_t fmode
)
949 * Protect the call to nfs4_state_set_mode_locked and
950 * serialise the stateid update
952 write_seqlock(&state
->seqlock
);
953 if (deleg_stateid
!= NULL
) {
954 nfs4_stateid_copy(&state
->stateid
, deleg_stateid
);
955 set_bit(NFS_DELEGATED_STATE
, &state
->flags
);
957 if (open_stateid
!= NULL
)
958 nfs_set_open_stateid_locked(state
, open_stateid
, fmode
);
959 write_sequnlock(&state
->seqlock
);
960 spin_lock(&state
->owner
->so_lock
);
961 update_open_stateflags(state
, fmode
);
962 spin_unlock(&state
->owner
->so_lock
);
965 static int update_open_stateid(struct nfs4_state
*state
, nfs4_stateid
*open_stateid
, nfs4_stateid
*delegation
, fmode_t fmode
)
967 struct nfs_inode
*nfsi
= NFS_I(state
->inode
);
968 struct nfs_delegation
*deleg_cur
;
971 fmode
&= (FMODE_READ
|FMODE_WRITE
);
974 deleg_cur
= rcu_dereference(nfsi
->delegation
);
975 if (deleg_cur
== NULL
)
978 spin_lock(&deleg_cur
->lock
);
979 if (nfsi
->delegation
!= deleg_cur
||
980 test_bit(NFS_DELEGATION_RETURNING
, &deleg_cur
->flags
) ||
981 (deleg_cur
->type
& fmode
) != fmode
)
982 goto no_delegation_unlock
;
984 if (delegation
== NULL
)
985 delegation
= &deleg_cur
->stateid
;
986 else if (!nfs4_stateid_match(&deleg_cur
->stateid
, delegation
))
987 goto no_delegation_unlock
;
989 nfs_mark_delegation_referenced(deleg_cur
);
990 __update_open_stateid(state
, open_stateid
, &deleg_cur
->stateid
, fmode
);
992 no_delegation_unlock
:
993 spin_unlock(&deleg_cur
->lock
);
997 if (!ret
&& open_stateid
!= NULL
) {
998 __update_open_stateid(state
, open_stateid
, NULL
, fmode
);
1006 static void nfs4_return_incompatible_delegation(struct inode
*inode
, fmode_t fmode
)
1008 struct nfs_delegation
*delegation
;
1011 delegation
= rcu_dereference(NFS_I(inode
)->delegation
);
1012 if (delegation
== NULL
|| (delegation
->type
& fmode
) == fmode
) {
1017 nfs4_inode_return_delegation(inode
);
1020 static struct nfs4_state
*nfs4_try_open_cached(struct nfs4_opendata
*opendata
)
1022 struct nfs4_state
*state
= opendata
->state
;
1023 struct nfs_inode
*nfsi
= NFS_I(state
->inode
);
1024 struct nfs_delegation
*delegation
;
1025 int open_mode
= opendata
->o_arg
.open_flags
& (O_EXCL
|O_TRUNC
);
1026 fmode_t fmode
= opendata
->o_arg
.fmode
;
1027 nfs4_stateid stateid
;
1031 if (can_open_cached(state
, fmode
, open_mode
)) {
1032 spin_lock(&state
->owner
->so_lock
);
1033 if (can_open_cached(state
, fmode
, open_mode
)) {
1034 update_open_stateflags(state
, fmode
);
1035 spin_unlock(&state
->owner
->so_lock
);
1036 goto out_return_state
;
1038 spin_unlock(&state
->owner
->so_lock
);
1041 delegation
= rcu_dereference(nfsi
->delegation
);
1042 if (!can_open_delegated(delegation
, fmode
)) {
1046 /* Save the delegation */
1047 nfs4_stateid_copy(&stateid
, &delegation
->stateid
);
1049 nfs_release_seqid(opendata
->o_arg
.seqid
);
1050 ret
= nfs_may_open(state
->inode
, state
->owner
->so_cred
, open_mode
);
1055 /* Try to update the stateid using the delegation */
1056 if (update_open_stateid(state
, NULL
, &stateid
, fmode
))
1057 goto out_return_state
;
1060 return ERR_PTR(ret
);
1062 atomic_inc(&state
->count
);
1067 nfs4_opendata_check_deleg(struct nfs4_opendata
*data
, struct nfs4_state
*state
)
1069 struct nfs_client
*clp
= NFS_SERVER(state
->inode
)->nfs_client
;
1070 struct nfs_delegation
*delegation
;
1071 int delegation_flags
= 0;
1074 delegation
= rcu_dereference(NFS_I(state
->inode
)->delegation
);
1076 delegation_flags
= delegation
->flags
;
1078 if (data
->o_arg
.claim
== NFS4_OPEN_CLAIM_DELEGATE_CUR
) {
1079 pr_err_ratelimited("NFS: Broken NFSv4 server %s is "
1080 "returning a delegation for "
1081 "OPEN(CLAIM_DELEGATE_CUR)\n",
1083 } else if ((delegation_flags
& 1UL<<NFS_DELEGATION_NEED_RECLAIM
) == 0)
1084 nfs_inode_set_delegation(state
->inode
,
1085 data
->owner
->so_cred
,
1088 nfs_inode_reclaim_delegation(state
->inode
,
1089 data
->owner
->so_cred
,
1094 * Check the inode attributes against the CLAIM_PREVIOUS returned attributes
1095 * and update the nfs4_state.
1097 static struct nfs4_state
*
1098 _nfs4_opendata_reclaim_to_nfs4_state(struct nfs4_opendata
*data
)
1100 struct inode
*inode
= data
->state
->inode
;
1101 struct nfs4_state
*state
= data
->state
;
1104 if (!data
->rpc_done
) {
1105 ret
= data
->rpc_status
;
1110 if (!(data
->f_attr
.valid
& NFS_ATTR_FATTR_TYPE
) ||
1111 !(data
->f_attr
.valid
& NFS_ATTR_FATTR_FILEID
) ||
1112 !(data
->f_attr
.valid
& NFS_ATTR_FATTR_CHANGE
))
1116 state
= nfs4_get_open_state(inode
, data
->owner
);
1120 ret
= nfs_refresh_inode(inode
, &data
->f_attr
);
1124 if (data
->o_res
.delegation_type
!= 0)
1125 nfs4_opendata_check_deleg(data
, state
);
1126 update_open_stateid(state
, &data
->o_res
.stateid
, NULL
,
1131 return ERR_PTR(ret
);
1135 static struct nfs4_state
*
1136 _nfs4_opendata_to_nfs4_state(struct nfs4_opendata
*data
)
1138 struct inode
*inode
;
1139 struct nfs4_state
*state
= NULL
;
1142 if (!data
->rpc_done
) {
1143 state
= nfs4_try_open_cached(data
);
1148 if (!(data
->f_attr
.valid
& NFS_ATTR_FATTR
))
1150 inode
= nfs_fhget(data
->dir
->d_sb
, &data
->o_res
.fh
, &data
->f_attr
);
1151 ret
= PTR_ERR(inode
);
1155 state
= nfs4_get_open_state(inode
, data
->owner
);
1158 if (data
->o_res
.delegation_type
!= 0)
1159 nfs4_opendata_check_deleg(data
, state
);
1160 update_open_stateid(state
, &data
->o_res
.stateid
, NULL
,
1164 nfs_release_seqid(data
->o_arg
.seqid
);
1169 return ERR_PTR(ret
);
1172 static struct nfs4_state
*
1173 nfs4_opendata_to_nfs4_state(struct nfs4_opendata
*data
)
1175 if (data
->o_arg
.claim
== NFS4_OPEN_CLAIM_PREVIOUS
)
1176 return _nfs4_opendata_reclaim_to_nfs4_state(data
);
1177 return _nfs4_opendata_to_nfs4_state(data
);
1180 static struct nfs_open_context
*nfs4_state_find_open_context(struct nfs4_state
*state
)
1182 struct nfs_inode
*nfsi
= NFS_I(state
->inode
);
1183 struct nfs_open_context
*ctx
;
1185 spin_lock(&state
->inode
->i_lock
);
1186 list_for_each_entry(ctx
, &nfsi
->open_files
, list
) {
1187 if (ctx
->state
!= state
)
1189 get_nfs_open_context(ctx
);
1190 spin_unlock(&state
->inode
->i_lock
);
1193 spin_unlock(&state
->inode
->i_lock
);
1194 return ERR_PTR(-ENOENT
);
1197 static struct nfs4_opendata
*nfs4_open_recoverdata_alloc(struct nfs_open_context
*ctx
, struct nfs4_state
*state
)
1199 struct nfs4_opendata
*opendata
;
1201 opendata
= nfs4_opendata_alloc(ctx
->dentry
, state
->owner
, 0, 0, NULL
, GFP_NOFS
);
1202 if (opendata
== NULL
)
1203 return ERR_PTR(-ENOMEM
);
1204 opendata
->state
= state
;
1205 atomic_inc(&state
->count
);
1209 static int nfs4_open_recover_helper(struct nfs4_opendata
*opendata
, fmode_t fmode
, struct nfs4_state
**res
)
1211 struct nfs4_state
*newstate
;
1214 opendata
->o_arg
.open_flags
= 0;
1215 opendata
->o_arg
.fmode
= fmode
;
1216 memset(&opendata
->o_res
, 0, sizeof(opendata
->o_res
));
1217 memset(&opendata
->c_res
, 0, sizeof(opendata
->c_res
));
1218 nfs4_init_opendata_res(opendata
);
1219 ret
= _nfs4_recover_proc_open(opendata
);
1222 newstate
= nfs4_opendata_to_nfs4_state(opendata
);
1223 if (IS_ERR(newstate
))
1224 return PTR_ERR(newstate
);
1225 nfs4_close_state(newstate
, fmode
);
1230 static int nfs4_open_recover(struct nfs4_opendata
*opendata
, struct nfs4_state
*state
)
1232 struct nfs4_state
*newstate
;
1235 /* memory barrier prior to reading state->n_* */
1236 clear_bit(NFS_DELEGATED_STATE
, &state
->flags
);
1238 if (state
->n_rdwr
!= 0) {
1239 clear_bit(NFS_O_RDWR_STATE
, &state
->flags
);
1240 ret
= nfs4_open_recover_helper(opendata
, FMODE_READ
|FMODE_WRITE
, &newstate
);
1243 if (newstate
!= state
)
1246 if (state
->n_wronly
!= 0) {
1247 clear_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
1248 ret
= nfs4_open_recover_helper(opendata
, FMODE_WRITE
, &newstate
);
1251 if (newstate
!= state
)
1254 if (state
->n_rdonly
!= 0) {
1255 clear_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
1256 ret
= nfs4_open_recover_helper(opendata
, FMODE_READ
, &newstate
);
1259 if (newstate
!= state
)
1263 * We may have performed cached opens for all three recoveries.
1264 * Check if we need to update the current stateid.
1266 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) == 0 &&
1267 !nfs4_stateid_match(&state
->stateid
, &state
->open_stateid
)) {
1268 write_seqlock(&state
->seqlock
);
1269 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) == 0)
1270 nfs4_stateid_copy(&state
->stateid
, &state
->open_stateid
);
1271 write_sequnlock(&state
->seqlock
);
1278 * reclaim state on the server after a reboot.
1280 static int _nfs4_do_open_reclaim(struct nfs_open_context
*ctx
, struct nfs4_state
*state
)
1282 struct nfs_delegation
*delegation
;
1283 struct nfs4_opendata
*opendata
;
1284 fmode_t delegation_type
= 0;
1287 opendata
= nfs4_open_recoverdata_alloc(ctx
, state
);
1288 if (IS_ERR(opendata
))
1289 return PTR_ERR(opendata
);
1290 opendata
->o_arg
.claim
= NFS4_OPEN_CLAIM_PREVIOUS
;
1291 opendata
->o_arg
.fh
= NFS_FH(state
->inode
);
1293 delegation
= rcu_dereference(NFS_I(state
->inode
)->delegation
);
1294 if (delegation
!= NULL
&& test_bit(NFS_DELEGATION_NEED_RECLAIM
, &delegation
->flags
) != 0)
1295 delegation_type
= delegation
->type
;
1297 opendata
->o_arg
.u
.delegation_type
= delegation_type
;
1298 status
= nfs4_open_recover(opendata
, state
);
1299 nfs4_opendata_put(opendata
);
1303 static int nfs4_do_open_reclaim(struct nfs_open_context
*ctx
, struct nfs4_state
*state
)
1305 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
1306 struct nfs4_exception exception
= { };
1309 err
= _nfs4_do_open_reclaim(ctx
, state
);
1310 if (err
!= -NFS4ERR_DELAY
)
1312 nfs4_handle_exception(server
, err
, &exception
);
1313 } while (exception
.retry
);
1317 static int nfs4_open_reclaim(struct nfs4_state_owner
*sp
, struct nfs4_state
*state
)
1319 struct nfs_open_context
*ctx
;
1322 ctx
= nfs4_state_find_open_context(state
);
1324 return PTR_ERR(ctx
);
1325 ret
= nfs4_do_open_reclaim(ctx
, state
);
1326 put_nfs_open_context(ctx
);
1330 static int _nfs4_open_delegation_recall(struct nfs_open_context
*ctx
, struct nfs4_state
*state
, const nfs4_stateid
*stateid
)
1332 struct nfs4_opendata
*opendata
;
1335 opendata
= nfs4_open_recoverdata_alloc(ctx
, state
);
1336 if (IS_ERR(opendata
))
1337 return PTR_ERR(opendata
);
1338 opendata
->o_arg
.claim
= NFS4_OPEN_CLAIM_DELEGATE_CUR
;
1339 nfs4_stateid_copy(&opendata
->o_arg
.u
.delegation
, stateid
);
1340 ret
= nfs4_open_recover(opendata
, state
);
1341 nfs4_opendata_put(opendata
);
1345 int nfs4_open_delegation_recall(struct nfs_open_context
*ctx
, struct nfs4_state
*state
, const nfs4_stateid
*stateid
)
1347 struct nfs4_exception exception
= { };
1348 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
1351 err
= _nfs4_open_delegation_recall(ctx
, state
, stateid
);
1357 case -NFS4ERR_BADSESSION
:
1358 case -NFS4ERR_BADSLOT
:
1359 case -NFS4ERR_BAD_HIGH_SLOT
:
1360 case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION
:
1361 case -NFS4ERR_DEADSESSION
:
1362 set_bit(NFS_DELEGATED_STATE
, &state
->flags
);
1363 nfs4_schedule_session_recovery(server
->nfs_client
->cl_session
, err
);
1366 case -NFS4ERR_STALE_CLIENTID
:
1367 case -NFS4ERR_STALE_STATEID
:
1368 set_bit(NFS_DELEGATED_STATE
, &state
->flags
);
1369 case -NFS4ERR_EXPIRED
:
1370 /* Don't recall a delegation if it was lost */
1371 nfs4_schedule_lease_recovery(server
->nfs_client
);
1374 case -NFS4ERR_DELEG_REVOKED
:
1375 case -NFS4ERR_ADMIN_REVOKED
:
1376 case -NFS4ERR_BAD_STATEID
:
1377 nfs_inode_find_state_and_recover(state
->inode
,
1379 nfs4_schedule_stateid_recovery(server
, state
);
1384 set_bit(NFS_DELEGATED_STATE
, &state
->flags
);
1385 err
= nfs4_handle_exception(server
, err
, &exception
);
1386 } while (exception
.retry
);
1391 static void nfs4_open_confirm_done(struct rpc_task
*task
, void *calldata
)
1393 struct nfs4_opendata
*data
= calldata
;
1395 data
->rpc_status
= task
->tk_status
;
1396 if (data
->rpc_status
== 0) {
1397 nfs4_stateid_copy(&data
->o_res
.stateid
, &data
->c_res
.stateid
);
1398 nfs_confirm_seqid(&data
->owner
->so_seqid
, 0);
1399 renew_lease(data
->o_res
.server
, data
->timestamp
);
1404 static void nfs4_open_confirm_release(void *calldata
)
1406 struct nfs4_opendata
*data
= calldata
;
1407 struct nfs4_state
*state
= NULL
;
1409 /* If this request hasn't been cancelled, do nothing */
1410 if (data
->cancelled
== 0)
1412 /* In case of error, no cleanup! */
1413 if (!data
->rpc_done
)
1415 state
= nfs4_opendata_to_nfs4_state(data
);
1417 nfs4_close_state(state
, data
->o_arg
.fmode
);
1419 nfs4_opendata_put(data
);
1422 static const struct rpc_call_ops nfs4_open_confirm_ops
= {
1423 .rpc_call_done
= nfs4_open_confirm_done
,
1424 .rpc_release
= nfs4_open_confirm_release
,
1428 * Note: On error, nfs4_proc_open_confirm will free the struct nfs4_opendata
1430 static int _nfs4_proc_open_confirm(struct nfs4_opendata
*data
)
1432 struct nfs_server
*server
= NFS_SERVER(data
->dir
->d_inode
);
1433 struct rpc_task
*task
;
1434 struct rpc_message msg
= {
1435 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_OPEN_CONFIRM
],
1436 .rpc_argp
= &data
->c_arg
,
1437 .rpc_resp
= &data
->c_res
,
1438 .rpc_cred
= data
->owner
->so_cred
,
1440 struct rpc_task_setup task_setup_data
= {
1441 .rpc_client
= server
->client
,
1442 .rpc_message
= &msg
,
1443 .callback_ops
= &nfs4_open_confirm_ops
,
1444 .callback_data
= data
,
1445 .workqueue
= nfsiod_workqueue
,
1446 .flags
= RPC_TASK_ASYNC
,
1450 kref_get(&data
->kref
);
1452 data
->rpc_status
= 0;
1453 data
->timestamp
= jiffies
;
1454 task
= rpc_run_task(&task_setup_data
);
1456 return PTR_ERR(task
);
1457 status
= nfs4_wait_for_completion_rpc_task(task
);
1459 data
->cancelled
= 1;
1462 status
= data
->rpc_status
;
1467 static void nfs4_open_prepare(struct rpc_task
*task
, void *calldata
)
1469 struct nfs4_opendata
*data
= calldata
;
1470 struct nfs4_state_owner
*sp
= data
->owner
;
1472 if (nfs_wait_on_sequence(data
->o_arg
.seqid
, task
) != 0)
1475 * Check if we still need to send an OPEN call, or if we can use
1476 * a delegation instead.
1478 if (data
->state
!= NULL
) {
1479 struct nfs_delegation
*delegation
;
1481 if (can_open_cached(data
->state
, data
->o_arg
.fmode
, data
->o_arg
.open_flags
))
1484 delegation
= rcu_dereference(NFS_I(data
->state
->inode
)->delegation
);
1485 if (data
->o_arg
.claim
!= NFS4_OPEN_CLAIM_DELEGATE_CUR
&&
1486 can_open_delegated(delegation
, data
->o_arg
.fmode
))
1487 goto unlock_no_action
;
1490 /* Update client id. */
1491 data
->o_arg
.clientid
= sp
->so_server
->nfs_client
->cl_clientid
;
1492 if (data
->o_arg
.claim
== NFS4_OPEN_CLAIM_PREVIOUS
) {
1493 task
->tk_msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_OPEN_NOATTR
];
1494 data
->o_arg
.open_bitmap
= &nfs4_open_noattr_bitmap
[0];
1495 nfs_copy_fh(&data
->o_res
.fh
, data
->o_arg
.fh
);
1497 data
->timestamp
= jiffies
;
1498 if (nfs4_setup_sequence(data
->o_arg
.server
,
1499 &data
->o_arg
.seq_args
,
1500 &data
->o_res
.seq_res
,
1502 nfs_release_seqid(data
->o_arg
.seqid
);
1507 task
->tk_action
= NULL
;
1509 nfs4_sequence_done(task
, &data
->o_res
.seq_res
);
1512 static void nfs4_open_done(struct rpc_task
*task
, void *calldata
)
1514 struct nfs4_opendata
*data
= calldata
;
1516 data
->rpc_status
= task
->tk_status
;
1518 if (!nfs4_sequence_done(task
, &data
->o_res
.seq_res
))
1521 if (task
->tk_status
== 0) {
1522 if (data
->o_res
.f_attr
->valid
& NFS_ATTR_FATTR_TYPE
) {
1523 switch (data
->o_res
.f_attr
->mode
& S_IFMT
) {
1527 data
->rpc_status
= -ELOOP
;
1530 data
->rpc_status
= -EISDIR
;
1533 data
->rpc_status
= -ENOTDIR
;
1536 renew_lease(data
->o_res
.server
, data
->timestamp
);
1537 if (!(data
->o_res
.rflags
& NFS4_OPEN_RESULT_CONFIRM
))
1538 nfs_confirm_seqid(&data
->owner
->so_seqid
, 0);
1543 static void nfs4_open_release(void *calldata
)
1545 struct nfs4_opendata
*data
= calldata
;
1546 struct nfs4_state
*state
= NULL
;
1548 /* If this request hasn't been cancelled, do nothing */
1549 if (data
->cancelled
== 0)
1551 /* In case of error, no cleanup! */
1552 if (data
->rpc_status
!= 0 || !data
->rpc_done
)
1554 /* In case we need an open_confirm, no cleanup! */
1555 if (data
->o_res
.rflags
& NFS4_OPEN_RESULT_CONFIRM
)
1557 state
= nfs4_opendata_to_nfs4_state(data
);
1559 nfs4_close_state(state
, data
->o_arg
.fmode
);
1561 nfs4_opendata_put(data
);
1564 static const struct rpc_call_ops nfs4_open_ops
= {
1565 .rpc_call_prepare
= nfs4_open_prepare
,
1566 .rpc_call_done
= nfs4_open_done
,
1567 .rpc_release
= nfs4_open_release
,
1570 static int nfs4_run_open_task(struct nfs4_opendata
*data
, int isrecover
)
1572 struct inode
*dir
= data
->dir
->d_inode
;
1573 struct nfs_server
*server
= NFS_SERVER(dir
);
1574 struct nfs_openargs
*o_arg
= &data
->o_arg
;
1575 struct nfs_openres
*o_res
= &data
->o_res
;
1576 struct rpc_task
*task
;
1577 struct rpc_message msg
= {
1578 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_OPEN
],
1581 .rpc_cred
= data
->owner
->so_cred
,
1583 struct rpc_task_setup task_setup_data
= {
1584 .rpc_client
= server
->client
,
1585 .rpc_message
= &msg
,
1586 .callback_ops
= &nfs4_open_ops
,
1587 .callback_data
= data
,
1588 .workqueue
= nfsiod_workqueue
,
1589 .flags
= RPC_TASK_ASYNC
,
1593 nfs41_init_sequence(&o_arg
->seq_args
, &o_res
->seq_res
, 1);
1594 kref_get(&data
->kref
);
1596 data
->rpc_status
= 0;
1597 data
->cancelled
= 0;
1599 nfs4_set_sequence_privileged(&o_arg
->seq_args
);
1600 task
= rpc_run_task(&task_setup_data
);
1602 return PTR_ERR(task
);
1603 status
= nfs4_wait_for_completion_rpc_task(task
);
1605 data
->cancelled
= 1;
1608 status
= data
->rpc_status
;
1614 static int _nfs4_recover_proc_open(struct nfs4_opendata
*data
)
1616 struct inode
*dir
= data
->dir
->d_inode
;
1617 struct nfs_openres
*o_res
= &data
->o_res
;
1620 status
= nfs4_run_open_task(data
, 1);
1621 if (status
!= 0 || !data
->rpc_done
)
1624 nfs_fattr_map_and_free_names(NFS_SERVER(dir
), &data
->f_attr
);
1626 if (o_res
->rflags
& NFS4_OPEN_RESULT_CONFIRM
) {
1627 status
= _nfs4_proc_open_confirm(data
);
1635 static int nfs4_opendata_access(struct rpc_cred
*cred
,
1636 struct nfs4_opendata
*opendata
,
1637 struct nfs4_state
*state
, fmode_t fmode
,
1640 struct nfs_access_entry cache
;
1643 /* access call failed or for some reason the server doesn't
1644 * support any access modes -- defer access call until later */
1645 if (opendata
->o_res
.access_supported
== 0)
1649 /* don't check MAY_WRITE - a newly created file may not have
1650 * write mode bits, but POSIX allows the creating process to write.
1651 * use openflags to check for exec, because fmode won't
1652 * always have FMODE_EXEC set when file open for exec. */
1653 if (openflags
& __FMODE_EXEC
) {
1654 /* ONLY check for exec rights */
1656 } else if (fmode
& FMODE_READ
)
1660 cache
.jiffies
= jiffies
;
1661 nfs_access_set_mask(&cache
, opendata
->o_res
.access_result
);
1662 nfs_access_add_cache(state
->inode
, &cache
);
1664 if ((mask
& ~cache
.mask
& (MAY_READ
| MAY_EXEC
)) == 0)
1667 /* even though OPEN succeeded, access is denied. Close the file */
1668 nfs4_close_state(state
, fmode
);
1673 * Note: On error, nfs4_proc_open will free the struct nfs4_opendata
1675 static int _nfs4_proc_open(struct nfs4_opendata
*data
)
1677 struct inode
*dir
= data
->dir
->d_inode
;
1678 struct nfs_server
*server
= NFS_SERVER(dir
);
1679 struct nfs_openargs
*o_arg
= &data
->o_arg
;
1680 struct nfs_openres
*o_res
= &data
->o_res
;
1683 status
= nfs4_run_open_task(data
, 0);
1684 if (!data
->rpc_done
)
1687 if (status
== -NFS4ERR_BADNAME
&&
1688 !(o_arg
->open_flags
& O_CREAT
))
1693 nfs_fattr_map_and_free_names(server
, &data
->f_attr
);
1695 if (o_arg
->open_flags
& O_CREAT
)
1696 update_changeattr(dir
, &o_res
->cinfo
);
1697 if ((o_res
->rflags
& NFS4_OPEN_RESULT_LOCKTYPE_POSIX
) == 0)
1698 server
->caps
&= ~NFS_CAP_POSIX_LOCK
;
1699 if(o_res
->rflags
& NFS4_OPEN_RESULT_CONFIRM
) {
1700 status
= _nfs4_proc_open_confirm(data
);
1704 if (!(o_res
->f_attr
->valid
& NFS_ATTR_FATTR
))
1705 _nfs4_proc_getattr(server
, &o_res
->fh
, o_res
->f_attr
);
1709 static int nfs4_recover_expired_lease(struct nfs_server
*server
)
1711 return nfs4_client_recover_expired_lease(server
->nfs_client
);
1716 * reclaim state on the server after a network partition.
1717 * Assumes caller holds the appropriate lock
1719 static int _nfs4_open_expired(struct nfs_open_context
*ctx
, struct nfs4_state
*state
)
1721 struct nfs4_opendata
*opendata
;
1724 opendata
= nfs4_open_recoverdata_alloc(ctx
, state
);
1725 if (IS_ERR(opendata
))
1726 return PTR_ERR(opendata
);
1727 ret
= nfs4_open_recover(opendata
, state
);
1729 d_drop(ctx
->dentry
);
1730 nfs4_opendata_put(opendata
);
1734 static int nfs4_do_open_expired(struct nfs_open_context
*ctx
, struct nfs4_state
*state
)
1736 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
1737 struct nfs4_exception exception
= { };
1741 err
= _nfs4_open_expired(ctx
, state
);
1745 case -NFS4ERR_GRACE
:
1746 case -NFS4ERR_DELAY
:
1747 nfs4_handle_exception(server
, err
, &exception
);
1750 } while (exception
.retry
);
1755 static int nfs4_open_expired(struct nfs4_state_owner
*sp
, struct nfs4_state
*state
)
1757 struct nfs_open_context
*ctx
;
1760 ctx
= nfs4_state_find_open_context(state
);
1762 return PTR_ERR(ctx
);
1763 ret
= nfs4_do_open_expired(ctx
, state
);
1764 put_nfs_open_context(ctx
);
1768 #if defined(CONFIG_NFS_V4_1)
1769 static void nfs41_clear_delegation_stateid(struct nfs4_state
*state
)
1771 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
1772 nfs4_stateid
*stateid
= &state
->stateid
;
1775 /* If a state reset has been done, test_stateid is unneeded */
1776 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) == 0)
1779 status
= nfs41_test_stateid(server
, stateid
);
1780 if (status
!= NFS_OK
) {
1781 /* Free the stateid unless the server explicitly
1782 * informs us the stateid is unrecognized. */
1783 if (status
!= -NFS4ERR_BAD_STATEID
)
1784 nfs41_free_stateid(server
, stateid
);
1785 nfs_remove_bad_delegation(state
->inode
);
1787 write_seqlock(&state
->seqlock
);
1788 nfs4_stateid_copy(&state
->stateid
, &state
->open_stateid
);
1789 write_sequnlock(&state
->seqlock
);
1790 clear_bit(NFS_DELEGATED_STATE
, &state
->flags
);
1795 * nfs41_check_open_stateid - possibly free an open stateid
1797 * @state: NFSv4 state for an inode
1799 * Returns NFS_OK if recovery for this stateid is now finished.
1800 * Otherwise a negative NFS4ERR value is returned.
1802 static int nfs41_check_open_stateid(struct nfs4_state
*state
)
1804 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
1805 nfs4_stateid
*stateid
= &state
->open_stateid
;
1808 /* If a state reset has been done, test_stateid is unneeded */
1809 if ((test_bit(NFS_O_RDONLY_STATE
, &state
->flags
) == 0) &&
1810 (test_bit(NFS_O_WRONLY_STATE
, &state
->flags
) == 0) &&
1811 (test_bit(NFS_O_RDWR_STATE
, &state
->flags
) == 0))
1812 return -NFS4ERR_BAD_STATEID
;
1814 status
= nfs41_test_stateid(server
, stateid
);
1815 if (status
!= NFS_OK
) {
1816 /* Free the stateid unless the server explicitly
1817 * informs us the stateid is unrecognized. */
1818 if (status
!= -NFS4ERR_BAD_STATEID
)
1819 nfs41_free_stateid(server
, stateid
);
1821 clear_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
1822 clear_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
1823 clear_bit(NFS_O_RDWR_STATE
, &state
->flags
);
1828 static int nfs41_open_expired(struct nfs4_state_owner
*sp
, struct nfs4_state
*state
)
1832 nfs41_clear_delegation_stateid(state
);
1833 status
= nfs41_check_open_stateid(state
);
1834 if (status
!= NFS_OK
)
1835 status
= nfs4_open_expired(sp
, state
);
1841 * on an EXCLUSIVE create, the server should send back a bitmask with FATTR4-*
1842 * fields corresponding to attributes that were used to store the verifier.
1843 * Make sure we clobber those fields in the later setattr call
1845 static inline void nfs4_exclusive_attrset(struct nfs4_opendata
*opendata
, struct iattr
*sattr
)
1847 if ((opendata
->o_res
.attrset
[1] & FATTR4_WORD1_TIME_ACCESS
) &&
1848 !(sattr
->ia_valid
& ATTR_ATIME_SET
))
1849 sattr
->ia_valid
|= ATTR_ATIME
;
1851 if ((opendata
->o_res
.attrset
[1] & FATTR4_WORD1_TIME_MODIFY
) &&
1852 !(sattr
->ia_valid
& ATTR_MTIME_SET
))
1853 sattr
->ia_valid
|= ATTR_MTIME
;
1856 static int _nfs4_open_and_get_state(struct nfs4_opendata
*opendata
,
1859 struct nfs4_state
**res
)
1861 struct nfs4_state_owner
*sp
= opendata
->owner
;
1862 struct nfs_server
*server
= sp
->so_server
;
1863 struct nfs4_state
*state
;
1867 seq
= raw_seqcount_begin(&sp
->so_reclaim_seqcount
);
1869 ret
= _nfs4_proc_open(opendata
);
1873 state
= nfs4_opendata_to_nfs4_state(opendata
);
1874 ret
= PTR_ERR(state
);
1877 if (server
->caps
& NFS_CAP_POSIX_LOCK
)
1878 set_bit(NFS_STATE_POSIX_LOCKS
, &state
->flags
);
1880 ret
= nfs4_opendata_access(sp
->so_cred
, opendata
, state
, fmode
, flags
);
1884 if (read_seqcount_retry(&sp
->so_reclaim_seqcount
, seq
)) {
1885 nfs4_schedule_stateid_recovery(server
, state
);
1886 nfs4_wait_clnt_recover(server
->nfs_client
);
1894 * Returns a referenced nfs4_state
1896 static int _nfs4_do_open(struct inode
*dir
,
1897 struct dentry
*dentry
,
1900 struct iattr
*sattr
,
1901 struct rpc_cred
*cred
,
1902 struct nfs4_state
**res
,
1903 struct nfs4_threshold
**ctx_th
)
1905 struct nfs4_state_owner
*sp
;
1906 struct nfs4_state
*state
= NULL
;
1907 struct nfs_server
*server
= NFS_SERVER(dir
);
1908 struct nfs4_opendata
*opendata
;
1911 /* Protect against reboot recovery conflicts */
1913 sp
= nfs4_get_state_owner(server
, cred
, GFP_KERNEL
);
1915 dprintk("nfs4_do_open: nfs4_get_state_owner failed!\n");
1918 status
= nfs4_recover_expired_lease(server
);
1920 goto err_put_state_owner
;
1921 if (dentry
->d_inode
!= NULL
)
1922 nfs4_return_incompatible_delegation(dentry
->d_inode
, fmode
);
1924 opendata
= nfs4_opendata_alloc(dentry
, sp
, fmode
, flags
, sattr
, GFP_KERNEL
);
1925 if (opendata
== NULL
)
1926 goto err_put_state_owner
;
1928 if (ctx_th
&& server
->attr_bitmask
[2] & FATTR4_WORD2_MDSTHRESHOLD
) {
1929 opendata
->f_attr
.mdsthreshold
= pnfs_mdsthreshold_alloc();
1930 if (!opendata
->f_attr
.mdsthreshold
)
1931 goto err_opendata_put
;
1932 opendata
->o_arg
.open_bitmap
= &nfs4_pnfs_open_bitmap
[0];
1934 if (dentry
->d_inode
!= NULL
)
1935 opendata
->state
= nfs4_get_open_state(dentry
->d_inode
, sp
);
1937 status
= _nfs4_open_and_get_state(opendata
, fmode
, flags
, &state
);
1939 goto err_opendata_put
;
1941 if (opendata
->o_arg
.open_flags
& O_EXCL
) {
1942 nfs4_exclusive_attrset(opendata
, sattr
);
1944 nfs_fattr_init(opendata
->o_res
.f_attr
);
1945 status
= nfs4_do_setattr(state
->inode
, cred
,
1946 opendata
->o_res
.f_attr
, sattr
,
1949 nfs_setattr_update_inode(state
->inode
, sattr
);
1950 nfs_post_op_update_inode(state
->inode
, opendata
->o_res
.f_attr
);
1953 if (pnfs_use_threshold(ctx_th
, opendata
->f_attr
.mdsthreshold
, server
))
1954 *ctx_th
= opendata
->f_attr
.mdsthreshold
;
1956 kfree(opendata
->f_attr
.mdsthreshold
);
1957 opendata
->f_attr
.mdsthreshold
= NULL
;
1959 nfs4_opendata_put(opendata
);
1960 nfs4_put_state_owner(sp
);
1964 kfree(opendata
->f_attr
.mdsthreshold
);
1965 nfs4_opendata_put(opendata
);
1966 err_put_state_owner
:
1967 nfs4_put_state_owner(sp
);
1974 static struct nfs4_state
*nfs4_do_open(struct inode
*dir
,
1975 struct dentry
*dentry
,
1978 struct iattr
*sattr
,
1979 struct rpc_cred
*cred
,
1980 struct nfs4_threshold
**ctx_th
)
1982 struct nfs4_exception exception
= { };
1983 struct nfs4_state
*res
;
1986 fmode
&= FMODE_READ
|FMODE_WRITE
|FMODE_EXEC
;
1988 status
= _nfs4_do_open(dir
, dentry
, fmode
, flags
, sattr
, cred
,
1992 /* NOTE: BAD_SEQID means the server and client disagree about the
1993 * book-keeping w.r.t. state-changing operations
1994 * (OPEN/CLOSE/LOCK/LOCKU...)
1995 * It is actually a sign of a bug on the client or on the server.
1997 * If we receive a BAD_SEQID error in the particular case of
1998 * doing an OPEN, we assume that nfs_increment_open_seqid() will
1999 * have unhashed the old state_owner for us, and that we can
2000 * therefore safely retry using a new one. We should still warn
2001 * the user though...
2003 if (status
== -NFS4ERR_BAD_SEQID
) {
2004 pr_warn_ratelimited("NFS: v4 server %s "
2005 " returned a bad sequence-id error!\n",
2006 NFS_SERVER(dir
)->nfs_client
->cl_hostname
);
2007 exception
.retry
= 1;
2011 * BAD_STATEID on OPEN means that the server cancelled our
2012 * state before it received the OPEN_CONFIRM.
2013 * Recover by retrying the request as per the discussion
2014 * on Page 181 of RFC3530.
2016 if (status
== -NFS4ERR_BAD_STATEID
) {
2017 exception
.retry
= 1;
2020 if (status
== -EAGAIN
) {
2021 /* We must have found a delegation */
2022 exception
.retry
= 1;
2025 res
= ERR_PTR(nfs4_handle_exception(NFS_SERVER(dir
),
2026 status
, &exception
));
2027 } while (exception
.retry
);
2031 static int _nfs4_do_setattr(struct inode
*inode
, struct rpc_cred
*cred
,
2032 struct nfs_fattr
*fattr
, struct iattr
*sattr
,
2033 struct nfs4_state
*state
)
2035 struct nfs_server
*server
= NFS_SERVER(inode
);
2036 struct nfs_setattrargs arg
= {
2037 .fh
= NFS_FH(inode
),
2040 .bitmask
= server
->attr_bitmask
,
2042 struct nfs_setattrres res
= {
2046 struct rpc_message msg
= {
2047 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETATTR
],
2052 unsigned long timestamp
= jiffies
;
2055 nfs_fattr_init(fattr
);
2057 if (state
!= NULL
) {
2058 struct nfs_lockowner lockowner
= {
2059 .l_owner
= current
->files
,
2060 .l_pid
= current
->tgid
,
2062 nfs4_select_rw_stateid(&arg
.stateid
, state
, FMODE_WRITE
,
2064 } else if (nfs4_copy_delegation_stateid(&arg
.stateid
, inode
,
2066 /* Use that stateid */
2068 nfs4_stateid_copy(&arg
.stateid
, &zero_stateid
);
2070 status
= nfs4_call_sync(server
->client
, server
, &msg
, &arg
.seq_args
, &res
.seq_res
, 1);
2071 if (status
== 0 && state
!= NULL
)
2072 renew_lease(server
, timestamp
);
2076 static int nfs4_do_setattr(struct inode
*inode
, struct rpc_cred
*cred
,
2077 struct nfs_fattr
*fattr
, struct iattr
*sattr
,
2078 struct nfs4_state
*state
)
2080 struct nfs_server
*server
= NFS_SERVER(inode
);
2081 struct nfs4_exception exception
= {
2087 err
= _nfs4_do_setattr(inode
, cred
, fattr
, sattr
, state
);
2089 case -NFS4ERR_OPENMODE
:
2090 if (state
&& !(state
->state
& FMODE_WRITE
)) {
2092 if (sattr
->ia_valid
& ATTR_OPEN
)
2097 err
= nfs4_handle_exception(server
, err
, &exception
);
2098 } while (exception
.retry
);
2103 struct nfs4_closedata
{
2104 struct inode
*inode
;
2105 struct nfs4_state
*state
;
2106 struct nfs_closeargs arg
;
2107 struct nfs_closeres res
;
2108 struct nfs_fattr fattr
;
2109 unsigned long timestamp
;
2114 static void nfs4_free_closedata(void *data
)
2116 struct nfs4_closedata
*calldata
= data
;
2117 struct nfs4_state_owner
*sp
= calldata
->state
->owner
;
2118 struct super_block
*sb
= calldata
->state
->inode
->i_sb
;
2121 pnfs_roc_release(calldata
->state
->inode
);
2122 nfs4_put_open_state(calldata
->state
);
2123 nfs_free_seqid(calldata
->arg
.seqid
);
2124 nfs4_put_state_owner(sp
);
2125 nfs_sb_deactive(sb
);
2129 static void nfs4_close_clear_stateid_flags(struct nfs4_state
*state
,
2132 spin_lock(&state
->owner
->so_lock
);
2133 if (!(fmode
& FMODE_READ
))
2134 clear_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
2135 if (!(fmode
& FMODE_WRITE
))
2136 clear_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
2137 clear_bit(NFS_O_RDWR_STATE
, &state
->flags
);
2138 spin_unlock(&state
->owner
->so_lock
);
2141 static void nfs4_close_done(struct rpc_task
*task
, void *data
)
2143 struct nfs4_closedata
*calldata
= data
;
2144 struct nfs4_state
*state
= calldata
->state
;
2145 struct nfs_server
*server
= NFS_SERVER(calldata
->inode
);
2147 dprintk("%s: begin!\n", __func__
);
2148 if (!nfs4_sequence_done(task
, &calldata
->res
.seq_res
))
2150 /* hmm. we are done with the inode, and in the process of freeing
2151 * the state_owner. we keep this around to process errors
2153 switch (task
->tk_status
) {
2156 pnfs_roc_set_barrier(state
->inode
,
2157 calldata
->roc_barrier
);
2158 nfs_set_open_stateid(state
, &calldata
->res
.stateid
, 0);
2159 renew_lease(server
, calldata
->timestamp
);
2160 nfs4_close_clear_stateid_flags(state
,
2161 calldata
->arg
.fmode
);
2163 case -NFS4ERR_STALE_STATEID
:
2164 case -NFS4ERR_OLD_STATEID
:
2165 case -NFS4ERR_BAD_STATEID
:
2166 case -NFS4ERR_EXPIRED
:
2167 if (calldata
->arg
.fmode
== 0)
2170 if (nfs4_async_handle_error(task
, server
, state
) == -EAGAIN
)
2171 rpc_restart_call_prepare(task
);
2173 nfs_release_seqid(calldata
->arg
.seqid
);
2174 nfs_refresh_inode(calldata
->inode
, calldata
->res
.fattr
);
2175 dprintk("%s: done, ret = %d!\n", __func__
, task
->tk_status
);
2178 static void nfs4_close_prepare(struct rpc_task
*task
, void *data
)
2180 struct nfs4_closedata
*calldata
= data
;
2181 struct nfs4_state
*state
= calldata
->state
;
2182 struct inode
*inode
= calldata
->inode
;
2185 dprintk("%s: begin!\n", __func__
);
2186 if (nfs_wait_on_sequence(calldata
->arg
.seqid
, task
) != 0)
2189 task
->tk_msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_OPEN_DOWNGRADE
];
2190 calldata
->arg
.fmode
= FMODE_READ
|FMODE_WRITE
;
2191 spin_lock(&state
->owner
->so_lock
);
2192 /* Calculate the change in open mode */
2193 if (state
->n_rdwr
== 0) {
2194 if (state
->n_rdonly
== 0) {
2195 call_close
|= test_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
2196 call_close
|= test_bit(NFS_O_RDWR_STATE
, &state
->flags
);
2197 calldata
->arg
.fmode
&= ~FMODE_READ
;
2199 if (state
->n_wronly
== 0) {
2200 call_close
|= test_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
2201 call_close
|= test_bit(NFS_O_RDWR_STATE
, &state
->flags
);
2202 calldata
->arg
.fmode
&= ~FMODE_WRITE
;
2205 spin_unlock(&state
->owner
->so_lock
);
2208 /* Note: exit _without_ calling nfs4_close_done */
2212 if (calldata
->arg
.fmode
== 0) {
2213 task
->tk_msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_CLOSE
];
2214 if (calldata
->roc
&&
2215 pnfs_roc_drain(inode
, &calldata
->roc_barrier
, task
))
2219 nfs_fattr_init(calldata
->res
.fattr
);
2220 calldata
->timestamp
= jiffies
;
2221 if (nfs4_setup_sequence(NFS_SERVER(inode
),
2222 &calldata
->arg
.seq_args
,
2223 &calldata
->res
.seq_res
,
2225 nfs_release_seqid(calldata
->arg
.seqid
);
2226 dprintk("%s: done!\n", __func__
);
2229 task
->tk_action
= NULL
;
2231 nfs4_sequence_done(task
, &calldata
->res
.seq_res
);
2234 static const struct rpc_call_ops nfs4_close_ops
= {
2235 .rpc_call_prepare
= nfs4_close_prepare
,
2236 .rpc_call_done
= nfs4_close_done
,
2237 .rpc_release
= nfs4_free_closedata
,
2241 * It is possible for data to be read/written from a mem-mapped file
2242 * after the sys_close call (which hits the vfs layer as a flush).
2243 * This means that we can't safely call nfsv4 close on a file until
2244 * the inode is cleared. This in turn means that we are not good
2245 * NFSv4 citizens - we do not indicate to the server to update the file's
2246 * share state even when we are done with one of the three share
2247 * stateid's in the inode.
2249 * NOTE: Caller must be holding the sp->so_owner semaphore!
2251 int nfs4_do_close(struct nfs4_state
*state
, gfp_t gfp_mask
, int wait
)
2253 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
2254 struct nfs4_closedata
*calldata
;
2255 struct nfs4_state_owner
*sp
= state
->owner
;
2256 struct rpc_task
*task
;
2257 struct rpc_message msg
= {
2258 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_CLOSE
],
2259 .rpc_cred
= state
->owner
->so_cred
,
2261 struct rpc_task_setup task_setup_data
= {
2262 .rpc_client
= server
->client
,
2263 .rpc_message
= &msg
,
2264 .callback_ops
= &nfs4_close_ops
,
2265 .workqueue
= nfsiod_workqueue
,
2266 .flags
= RPC_TASK_ASYNC
,
2268 int status
= -ENOMEM
;
2270 calldata
= kzalloc(sizeof(*calldata
), gfp_mask
);
2271 if (calldata
== NULL
)
2273 nfs41_init_sequence(&calldata
->arg
.seq_args
, &calldata
->res
.seq_res
, 1);
2274 calldata
->inode
= state
->inode
;
2275 calldata
->state
= state
;
2276 calldata
->arg
.fh
= NFS_FH(state
->inode
);
2277 calldata
->arg
.stateid
= &state
->open_stateid
;
2278 /* Serialization for the sequence id */
2279 calldata
->arg
.seqid
= nfs_alloc_seqid(&state
->owner
->so_seqid
, gfp_mask
);
2280 if (calldata
->arg
.seqid
== NULL
)
2281 goto out_free_calldata
;
2282 calldata
->arg
.fmode
= 0;
2283 calldata
->arg
.bitmask
= server
->cache_consistency_bitmask
;
2284 calldata
->res
.fattr
= &calldata
->fattr
;
2285 calldata
->res
.seqid
= calldata
->arg
.seqid
;
2286 calldata
->res
.server
= server
;
2287 calldata
->roc
= pnfs_roc(state
->inode
);
2288 nfs_sb_active(calldata
->inode
->i_sb
);
2290 msg
.rpc_argp
= &calldata
->arg
;
2291 msg
.rpc_resp
= &calldata
->res
;
2292 task_setup_data
.callback_data
= calldata
;
2293 task
= rpc_run_task(&task_setup_data
);
2295 return PTR_ERR(task
);
2298 status
= rpc_wait_for_completion_task(task
);
2304 nfs4_put_open_state(state
);
2305 nfs4_put_state_owner(sp
);
2309 static struct inode
*
2310 nfs4_atomic_open(struct inode
*dir
, struct nfs_open_context
*ctx
, int open_flags
, struct iattr
*attr
)
2312 struct nfs4_state
*state
;
2314 /* Protect against concurrent sillydeletes */
2315 state
= nfs4_do_open(dir
, ctx
->dentry
, ctx
->mode
, open_flags
, attr
,
2316 ctx
->cred
, &ctx
->mdsthreshold
);
2318 return ERR_CAST(state
);
2320 return igrab(state
->inode
);
2323 static void nfs4_close_context(struct nfs_open_context
*ctx
, int is_sync
)
2325 if (ctx
->state
== NULL
)
2328 nfs4_close_sync(ctx
->state
, ctx
->mode
);
2330 nfs4_close_state(ctx
->state
, ctx
->mode
);
2333 static int _nfs4_server_capabilities(struct nfs_server
*server
, struct nfs_fh
*fhandle
)
2335 struct nfs4_server_caps_arg args
= {
2338 struct nfs4_server_caps_res res
= {};
2339 struct rpc_message msg
= {
2340 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SERVER_CAPS
],
2346 status
= nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
2348 memcpy(server
->attr_bitmask
, res
.attr_bitmask
, sizeof(server
->attr_bitmask
));
2349 server
->caps
&= ~(NFS_CAP_ACLS
|NFS_CAP_HARDLINKS
|
2350 NFS_CAP_SYMLINKS
|NFS_CAP_FILEID
|
2351 NFS_CAP_MODE
|NFS_CAP_NLINK
|NFS_CAP_OWNER
|
2352 NFS_CAP_OWNER_GROUP
|NFS_CAP_ATIME
|
2353 NFS_CAP_CTIME
|NFS_CAP_MTIME
);
2354 if (res
.attr_bitmask
[0] & FATTR4_WORD0_ACL
)
2355 server
->caps
|= NFS_CAP_ACLS
;
2356 if (res
.has_links
!= 0)
2357 server
->caps
|= NFS_CAP_HARDLINKS
;
2358 if (res
.has_symlinks
!= 0)
2359 server
->caps
|= NFS_CAP_SYMLINKS
;
2360 if (res
.attr_bitmask
[0] & FATTR4_WORD0_FILEID
)
2361 server
->caps
|= NFS_CAP_FILEID
;
2362 if (res
.attr_bitmask
[1] & FATTR4_WORD1_MODE
)
2363 server
->caps
|= NFS_CAP_MODE
;
2364 if (res
.attr_bitmask
[1] & FATTR4_WORD1_NUMLINKS
)
2365 server
->caps
|= NFS_CAP_NLINK
;
2366 if (res
.attr_bitmask
[1] & FATTR4_WORD1_OWNER
)
2367 server
->caps
|= NFS_CAP_OWNER
;
2368 if (res
.attr_bitmask
[1] & FATTR4_WORD1_OWNER_GROUP
)
2369 server
->caps
|= NFS_CAP_OWNER_GROUP
;
2370 if (res
.attr_bitmask
[1] & FATTR4_WORD1_TIME_ACCESS
)
2371 server
->caps
|= NFS_CAP_ATIME
;
2372 if (res
.attr_bitmask
[1] & FATTR4_WORD1_TIME_METADATA
)
2373 server
->caps
|= NFS_CAP_CTIME
;
2374 if (res
.attr_bitmask
[1] & FATTR4_WORD1_TIME_MODIFY
)
2375 server
->caps
|= NFS_CAP_MTIME
;
2377 memcpy(server
->cache_consistency_bitmask
, res
.attr_bitmask
, sizeof(server
->cache_consistency_bitmask
));
2378 server
->cache_consistency_bitmask
[0] &= FATTR4_WORD0_CHANGE
|FATTR4_WORD0_SIZE
;
2379 server
->cache_consistency_bitmask
[1] &= FATTR4_WORD1_TIME_METADATA
|FATTR4_WORD1_TIME_MODIFY
;
2380 server
->acl_bitmask
= res
.acl_bitmask
;
2381 server
->fh_expire_type
= res
.fh_expire_type
;
2387 int nfs4_server_capabilities(struct nfs_server
*server
, struct nfs_fh
*fhandle
)
2389 struct nfs4_exception exception
= { };
2392 err
= nfs4_handle_exception(server
,
2393 _nfs4_server_capabilities(server
, fhandle
),
2395 } while (exception
.retry
);
2399 static int _nfs4_lookup_root(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
2400 struct nfs_fsinfo
*info
)
2402 struct nfs4_lookup_root_arg args
= {
2403 .bitmask
= nfs4_fattr_bitmap
,
2405 struct nfs4_lookup_res res
= {
2407 .fattr
= info
->fattr
,
2410 struct rpc_message msg
= {
2411 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOOKUP_ROOT
],
2416 nfs_fattr_init(info
->fattr
);
2417 return nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
2420 static int nfs4_lookup_root(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
2421 struct nfs_fsinfo
*info
)
2423 struct nfs4_exception exception
= { };
2426 err
= _nfs4_lookup_root(server
, fhandle
, info
);
2429 case -NFS4ERR_WRONGSEC
:
2432 err
= nfs4_handle_exception(server
, err
, &exception
);
2434 } while (exception
.retry
);
2439 static int nfs4_lookup_root_sec(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
2440 struct nfs_fsinfo
*info
, rpc_authflavor_t flavor
)
2442 struct rpc_auth
*auth
;
2445 auth
= rpcauth_create(flavor
, server
->client
);
2450 ret
= nfs4_lookup_root(server
, fhandle
, info
);
2455 static int nfs4_find_root_sec(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
2456 struct nfs_fsinfo
*info
)
2458 int i
, len
, status
= 0;
2459 rpc_authflavor_t flav_array
[NFS_MAX_SECFLAVORS
];
2461 len
= rpcauth_list_flavors(flav_array
, ARRAY_SIZE(flav_array
));
2465 for (i
= 0; i
< len
; i
++) {
2466 /* AUTH_UNIX is the default flavor if none was specified,
2467 * thus has already been tried. */
2468 if (flav_array
[i
] == RPC_AUTH_UNIX
)
2471 status
= nfs4_lookup_root_sec(server
, fhandle
, info
, flav_array
[i
]);
2472 if (status
== -NFS4ERR_WRONGSEC
|| status
== -EACCES
)
2477 * -EACCESS could mean that the user doesn't have correct permissions
2478 * to access the mount. It could also mean that we tried to mount
2479 * with a gss auth flavor, but rpc.gssd isn't running. Either way,
2480 * existing mount programs don't handle -EACCES very well so it should
2481 * be mapped to -EPERM instead.
2483 if (status
== -EACCES
)
2489 * get the file handle for the "/" directory on the server
2491 int nfs4_proc_get_rootfh(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
2492 struct nfs_fsinfo
*info
)
2494 int minor_version
= server
->nfs_client
->cl_minorversion
;
2495 int status
= nfs4_lookup_root(server
, fhandle
, info
);
2496 if ((status
== -NFS4ERR_WRONGSEC
) && !(server
->flags
& NFS_MOUNT_SECFLAVOUR
))
2498 * A status of -NFS4ERR_WRONGSEC will be mapped to -EPERM
2499 * by nfs4_map_errors() as this function exits.
2501 status
= nfs_v4_minor_ops
[minor_version
]->find_root_sec(server
, fhandle
, info
);
2503 status
= nfs4_server_capabilities(server
, fhandle
);
2505 status
= nfs4_do_fsinfo(server
, fhandle
, info
);
2506 return nfs4_map_errors(status
);
2509 static int nfs4_proc_get_root(struct nfs_server
*server
, struct nfs_fh
*mntfh
,
2510 struct nfs_fsinfo
*info
)
2513 struct nfs_fattr
*fattr
= info
->fattr
;
2515 error
= nfs4_server_capabilities(server
, mntfh
);
2517 dprintk("nfs4_get_root: getcaps error = %d\n", -error
);
2521 error
= nfs4_proc_getattr(server
, mntfh
, fattr
);
2523 dprintk("nfs4_get_root: getattr error = %d\n", -error
);
2527 if (fattr
->valid
& NFS_ATTR_FATTR_FSID
&&
2528 !nfs_fsid_equal(&server
->fsid
, &fattr
->fsid
))
2529 memcpy(&server
->fsid
, &fattr
->fsid
, sizeof(server
->fsid
));
2535 * Get locations and (maybe) other attributes of a referral.
2536 * Note that we'll actually follow the referral later when
2537 * we detect fsid mismatch in inode revalidation
2539 static int nfs4_get_referral(struct rpc_clnt
*client
, struct inode
*dir
,
2540 const struct qstr
*name
, struct nfs_fattr
*fattr
,
2541 struct nfs_fh
*fhandle
)
2543 int status
= -ENOMEM
;
2544 struct page
*page
= NULL
;
2545 struct nfs4_fs_locations
*locations
= NULL
;
2547 page
= alloc_page(GFP_KERNEL
);
2550 locations
= kmalloc(sizeof(struct nfs4_fs_locations
), GFP_KERNEL
);
2551 if (locations
== NULL
)
2554 status
= nfs4_proc_fs_locations(client
, dir
, name
, locations
, page
);
2557 /* Make sure server returned a different fsid for the referral */
2558 if (nfs_fsid_equal(&NFS_SERVER(dir
)->fsid
, &locations
->fattr
.fsid
)) {
2559 dprintk("%s: server did not return a different fsid for"
2560 " a referral at %s\n", __func__
, name
->name
);
2564 /* Fixup attributes for the nfs_lookup() call to nfs_fhget() */
2565 nfs_fixup_referral_attributes(&locations
->fattr
);
2567 /* replace the lookup nfs_fattr with the locations nfs_fattr */
2568 memcpy(fattr
, &locations
->fattr
, sizeof(struct nfs_fattr
));
2569 memset(fhandle
, 0, sizeof(struct nfs_fh
));
2577 static int _nfs4_proc_getattr(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fattr
*fattr
)
2579 struct nfs4_getattr_arg args
= {
2581 .bitmask
= server
->attr_bitmask
,
2583 struct nfs4_getattr_res res
= {
2587 struct rpc_message msg
= {
2588 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GETATTR
],
2593 nfs_fattr_init(fattr
);
2594 return nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
2597 static int nfs4_proc_getattr(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fattr
*fattr
)
2599 struct nfs4_exception exception
= { };
2602 err
= nfs4_handle_exception(server
,
2603 _nfs4_proc_getattr(server
, fhandle
, fattr
),
2605 } while (exception
.retry
);
2610 * The file is not closed if it is opened due to the a request to change
2611 * the size of the file. The open call will not be needed once the
2612 * VFS layer lookup-intents are implemented.
2614 * Close is called when the inode is destroyed.
2615 * If we haven't opened the file for O_WRONLY, we
2616 * need to in the size_change case to obtain a stateid.
2619 * Because OPEN is always done by name in nfsv4, it is
2620 * possible that we opened a different file by the same
2621 * name. We can recognize this race condition, but we
2622 * can't do anything about it besides returning an error.
2624 * This will be fixed with VFS changes (lookup-intent).
2627 nfs4_proc_setattr(struct dentry
*dentry
, struct nfs_fattr
*fattr
,
2628 struct iattr
*sattr
)
2630 struct inode
*inode
= dentry
->d_inode
;
2631 struct rpc_cred
*cred
= NULL
;
2632 struct nfs4_state
*state
= NULL
;
2635 if (pnfs_ld_layoutret_on_setattr(inode
))
2636 pnfs_commit_and_return_layout(inode
);
2638 nfs_fattr_init(fattr
);
2640 /* Deal with open(O_TRUNC) */
2641 if (sattr
->ia_valid
& ATTR_OPEN
)
2642 sattr
->ia_valid
&= ~(ATTR_MTIME
|ATTR_CTIME
|ATTR_OPEN
);
2644 /* Optimization: if the end result is no change, don't RPC */
2645 if ((sattr
->ia_valid
& ~(ATTR_FILE
)) == 0)
2648 /* Search for an existing open(O_WRITE) file */
2649 if (sattr
->ia_valid
& ATTR_FILE
) {
2650 struct nfs_open_context
*ctx
;
2652 ctx
= nfs_file_open_context(sattr
->ia_file
);
2659 status
= nfs4_do_setattr(inode
, cred
, fattr
, sattr
, state
);
2661 nfs_setattr_update_inode(inode
, sattr
);
2665 static int _nfs4_proc_lookup(struct rpc_clnt
*clnt
, struct inode
*dir
,
2666 const struct qstr
*name
, struct nfs_fh
*fhandle
,
2667 struct nfs_fattr
*fattr
)
2669 struct nfs_server
*server
= NFS_SERVER(dir
);
2671 struct nfs4_lookup_arg args
= {
2672 .bitmask
= server
->attr_bitmask
,
2673 .dir_fh
= NFS_FH(dir
),
2676 struct nfs4_lookup_res res
= {
2681 struct rpc_message msg
= {
2682 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOOKUP
],
2687 nfs_fattr_init(fattr
);
2689 dprintk("NFS call lookup %s\n", name
->name
);
2690 status
= nfs4_call_sync(clnt
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
2691 dprintk("NFS reply lookup: %d\n", status
);
2695 static void nfs_fixup_secinfo_attributes(struct nfs_fattr
*fattr
)
2697 fattr
->valid
|= NFS_ATTR_FATTR_TYPE
| NFS_ATTR_FATTR_MODE
|
2698 NFS_ATTR_FATTR_NLINK
| NFS_ATTR_FATTR_MOUNTPOINT
;
2699 fattr
->mode
= S_IFDIR
| S_IRUGO
| S_IXUGO
;
2703 static int nfs4_proc_lookup_common(struct rpc_clnt
**clnt
, struct inode
*dir
,
2704 struct qstr
*name
, struct nfs_fh
*fhandle
,
2705 struct nfs_fattr
*fattr
)
2707 struct nfs4_exception exception
= { };
2708 struct rpc_clnt
*client
= *clnt
;
2711 err
= _nfs4_proc_lookup(client
, dir
, name
, fhandle
, fattr
);
2713 case -NFS4ERR_BADNAME
:
2716 case -NFS4ERR_MOVED
:
2717 err
= nfs4_get_referral(client
, dir
, name
, fattr
, fhandle
);
2719 case -NFS4ERR_WRONGSEC
:
2721 if (client
!= *clnt
)
2724 client
= nfs4_create_sec_client(client
, dir
, name
);
2726 return PTR_ERR(client
);
2728 exception
.retry
= 1;
2731 err
= nfs4_handle_exception(NFS_SERVER(dir
), err
, &exception
);
2733 } while (exception
.retry
);
2738 else if (client
!= *clnt
)
2739 rpc_shutdown_client(client
);
2744 static int nfs4_proc_lookup(struct inode
*dir
, struct qstr
*name
,
2745 struct nfs_fh
*fhandle
, struct nfs_fattr
*fattr
)
2748 struct rpc_clnt
*client
= NFS_CLIENT(dir
);
2750 status
= nfs4_proc_lookup_common(&client
, dir
, name
, fhandle
, fattr
);
2751 if (client
!= NFS_CLIENT(dir
)) {
2752 rpc_shutdown_client(client
);
2753 nfs_fixup_secinfo_attributes(fattr
);
2759 nfs4_proc_lookup_mountpoint(struct inode
*dir
, struct qstr
*name
,
2760 struct nfs_fh
*fhandle
, struct nfs_fattr
*fattr
)
2763 struct rpc_clnt
*client
= rpc_clone_client(NFS_CLIENT(dir
));
2765 status
= nfs4_proc_lookup_common(&client
, dir
, name
, fhandle
, fattr
);
2767 rpc_shutdown_client(client
);
2768 return ERR_PTR(status
);
2773 static int _nfs4_proc_access(struct inode
*inode
, struct nfs_access_entry
*entry
)
2775 struct nfs_server
*server
= NFS_SERVER(inode
);
2776 struct nfs4_accessargs args
= {
2777 .fh
= NFS_FH(inode
),
2778 .bitmask
= server
->cache_consistency_bitmask
,
2780 struct nfs4_accessres res
= {
2783 struct rpc_message msg
= {
2784 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_ACCESS
],
2787 .rpc_cred
= entry
->cred
,
2789 int mode
= entry
->mask
;
2793 * Determine which access bits we want to ask for...
2795 if (mode
& MAY_READ
)
2796 args
.access
|= NFS4_ACCESS_READ
;
2797 if (S_ISDIR(inode
->i_mode
)) {
2798 if (mode
& MAY_WRITE
)
2799 args
.access
|= NFS4_ACCESS_MODIFY
| NFS4_ACCESS_EXTEND
| NFS4_ACCESS_DELETE
;
2800 if (mode
& MAY_EXEC
)
2801 args
.access
|= NFS4_ACCESS_LOOKUP
;
2803 if (mode
& MAY_WRITE
)
2804 args
.access
|= NFS4_ACCESS_MODIFY
| NFS4_ACCESS_EXTEND
;
2805 if (mode
& MAY_EXEC
)
2806 args
.access
|= NFS4_ACCESS_EXECUTE
;
2809 res
.fattr
= nfs_alloc_fattr();
2810 if (res
.fattr
== NULL
)
2813 status
= nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
2815 nfs_access_set_mask(entry
, res
.access
);
2816 nfs_refresh_inode(inode
, res
.fattr
);
2818 nfs_free_fattr(res
.fattr
);
2822 static int nfs4_proc_access(struct inode
*inode
, struct nfs_access_entry
*entry
)
2824 struct nfs4_exception exception
= { };
2827 err
= nfs4_handle_exception(NFS_SERVER(inode
),
2828 _nfs4_proc_access(inode
, entry
),
2830 } while (exception
.retry
);
2835 * TODO: For the time being, we don't try to get any attributes
2836 * along with any of the zero-copy operations READ, READDIR,
2839 * In the case of the first three, we want to put the GETATTR
2840 * after the read-type operation -- this is because it is hard
2841 * to predict the length of a GETATTR response in v4, and thus
2842 * align the READ data correctly. This means that the GETATTR
2843 * may end up partially falling into the page cache, and we should
2844 * shift it into the 'tail' of the xdr_buf before processing.
2845 * To do this efficiently, we need to know the total length
2846 * of data received, which doesn't seem to be available outside
2849 * In the case of WRITE, we also want to put the GETATTR after
2850 * the operation -- in this case because we want to make sure
2851 * we get the post-operation mtime and size.
2853 * Both of these changes to the XDR layer would in fact be quite
2854 * minor, but I decided to leave them for a subsequent patch.
2856 static int _nfs4_proc_readlink(struct inode
*inode
, struct page
*page
,
2857 unsigned int pgbase
, unsigned int pglen
)
2859 struct nfs4_readlink args
= {
2860 .fh
= NFS_FH(inode
),
2865 struct nfs4_readlink_res res
;
2866 struct rpc_message msg
= {
2867 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_READLINK
],
2872 return nfs4_call_sync(NFS_SERVER(inode
)->client
, NFS_SERVER(inode
), &msg
, &args
.seq_args
, &res
.seq_res
, 0);
2875 static int nfs4_proc_readlink(struct inode
*inode
, struct page
*page
,
2876 unsigned int pgbase
, unsigned int pglen
)
2878 struct nfs4_exception exception
= { };
2881 err
= nfs4_handle_exception(NFS_SERVER(inode
),
2882 _nfs4_proc_readlink(inode
, page
, pgbase
, pglen
),
2884 } while (exception
.retry
);
2889 * This is just for mknod. open(O_CREAT) will always do ->open_context().
2892 nfs4_proc_create(struct inode
*dir
, struct dentry
*dentry
, struct iattr
*sattr
,
2895 struct nfs_open_context
*ctx
;
2896 struct nfs4_state
*state
;
2899 ctx
= alloc_nfs_open_context(dentry
, FMODE_READ
);
2901 return PTR_ERR(ctx
);
2903 sattr
->ia_mode
&= ~current_umask();
2904 state
= nfs4_do_open(dir
, dentry
, ctx
->mode
,
2905 flags
, sattr
, ctx
->cred
,
2906 &ctx
->mdsthreshold
);
2908 if (IS_ERR(state
)) {
2909 status
= PTR_ERR(state
);
2912 d_add(dentry
, igrab(state
->inode
));
2913 nfs_set_verifier(dentry
, nfs_save_change_attribute(dir
));
2916 put_nfs_open_context(ctx
);
2920 static int _nfs4_proc_remove(struct inode
*dir
, struct qstr
*name
)
2922 struct nfs_server
*server
= NFS_SERVER(dir
);
2923 struct nfs_removeargs args
= {
2927 struct nfs_removeres res
= {
2930 struct rpc_message msg
= {
2931 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_REMOVE
],
2937 status
= nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 1);
2939 update_changeattr(dir
, &res
.cinfo
);
2943 static int nfs4_proc_remove(struct inode
*dir
, struct qstr
*name
)
2945 struct nfs4_exception exception
= { };
2948 err
= nfs4_handle_exception(NFS_SERVER(dir
),
2949 _nfs4_proc_remove(dir
, name
),
2951 } while (exception
.retry
);
2955 static void nfs4_proc_unlink_setup(struct rpc_message
*msg
, struct inode
*dir
)
2957 struct nfs_server
*server
= NFS_SERVER(dir
);
2958 struct nfs_removeargs
*args
= msg
->rpc_argp
;
2959 struct nfs_removeres
*res
= msg
->rpc_resp
;
2961 res
->server
= server
;
2962 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_REMOVE
];
2963 nfs41_init_sequence(&args
->seq_args
, &res
->seq_res
, 1);
2966 static void nfs4_proc_unlink_rpc_prepare(struct rpc_task
*task
, struct nfs_unlinkdata
*data
)
2968 nfs4_setup_sequence(NFS_SERVER(data
->dir
),
2969 &data
->args
.seq_args
,
2974 static int nfs4_proc_unlink_done(struct rpc_task
*task
, struct inode
*dir
)
2976 struct nfs_removeres
*res
= task
->tk_msg
.rpc_resp
;
2978 if (!nfs4_sequence_done(task
, &res
->seq_res
))
2980 if (nfs4_async_handle_error(task
, res
->server
, NULL
) == -EAGAIN
)
2982 update_changeattr(dir
, &res
->cinfo
);
2986 static void nfs4_proc_rename_setup(struct rpc_message
*msg
, struct inode
*dir
)
2988 struct nfs_server
*server
= NFS_SERVER(dir
);
2989 struct nfs_renameargs
*arg
= msg
->rpc_argp
;
2990 struct nfs_renameres
*res
= msg
->rpc_resp
;
2992 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RENAME
];
2993 res
->server
= server
;
2994 nfs41_init_sequence(&arg
->seq_args
, &res
->seq_res
, 1);
2997 static void nfs4_proc_rename_rpc_prepare(struct rpc_task
*task
, struct nfs_renamedata
*data
)
2999 nfs4_setup_sequence(NFS_SERVER(data
->old_dir
),
3000 &data
->args
.seq_args
,
3005 static int nfs4_proc_rename_done(struct rpc_task
*task
, struct inode
*old_dir
,
3006 struct inode
*new_dir
)
3008 struct nfs_renameres
*res
= task
->tk_msg
.rpc_resp
;
3010 if (!nfs4_sequence_done(task
, &res
->seq_res
))
3012 if (nfs4_async_handle_error(task
, res
->server
, NULL
) == -EAGAIN
)
3015 update_changeattr(old_dir
, &res
->old_cinfo
);
3016 update_changeattr(new_dir
, &res
->new_cinfo
);
3020 static int _nfs4_proc_rename(struct inode
*old_dir
, struct qstr
*old_name
,
3021 struct inode
*new_dir
, struct qstr
*new_name
)
3023 struct nfs_server
*server
= NFS_SERVER(old_dir
);
3024 struct nfs_renameargs arg
= {
3025 .old_dir
= NFS_FH(old_dir
),
3026 .new_dir
= NFS_FH(new_dir
),
3027 .old_name
= old_name
,
3028 .new_name
= new_name
,
3030 struct nfs_renameres res
= {
3033 struct rpc_message msg
= {
3034 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RENAME
],
3038 int status
= -ENOMEM
;
3040 status
= nfs4_call_sync(server
->client
, server
, &msg
, &arg
.seq_args
, &res
.seq_res
, 1);
3042 update_changeattr(old_dir
, &res
.old_cinfo
);
3043 update_changeattr(new_dir
, &res
.new_cinfo
);
3048 static int nfs4_proc_rename(struct inode
*old_dir
, struct qstr
*old_name
,
3049 struct inode
*new_dir
, struct qstr
*new_name
)
3051 struct nfs4_exception exception
= { };
3054 err
= nfs4_handle_exception(NFS_SERVER(old_dir
),
3055 _nfs4_proc_rename(old_dir
, old_name
,
3058 } while (exception
.retry
);
3062 static int _nfs4_proc_link(struct inode
*inode
, struct inode
*dir
, struct qstr
*name
)
3064 struct nfs_server
*server
= NFS_SERVER(inode
);
3065 struct nfs4_link_arg arg
= {
3066 .fh
= NFS_FH(inode
),
3067 .dir_fh
= NFS_FH(dir
),
3069 .bitmask
= server
->attr_bitmask
,
3071 struct nfs4_link_res res
= {
3074 struct rpc_message msg
= {
3075 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LINK
],
3079 int status
= -ENOMEM
;
3081 res
.fattr
= nfs_alloc_fattr();
3082 if (res
.fattr
== NULL
)
3085 status
= nfs4_call_sync(server
->client
, server
, &msg
, &arg
.seq_args
, &res
.seq_res
, 1);
3087 update_changeattr(dir
, &res
.cinfo
);
3088 nfs_post_op_update_inode(inode
, res
.fattr
);
3091 nfs_free_fattr(res
.fattr
);
3095 static int nfs4_proc_link(struct inode
*inode
, struct inode
*dir
, struct qstr
*name
)
3097 struct nfs4_exception exception
= { };
3100 err
= nfs4_handle_exception(NFS_SERVER(inode
),
3101 _nfs4_proc_link(inode
, dir
, name
),
3103 } while (exception
.retry
);
3107 struct nfs4_createdata
{
3108 struct rpc_message msg
;
3109 struct nfs4_create_arg arg
;
3110 struct nfs4_create_res res
;
3112 struct nfs_fattr fattr
;
3115 static struct nfs4_createdata
*nfs4_alloc_createdata(struct inode
*dir
,
3116 struct qstr
*name
, struct iattr
*sattr
, u32 ftype
)
3118 struct nfs4_createdata
*data
;
3120 data
= kzalloc(sizeof(*data
), GFP_KERNEL
);
3122 struct nfs_server
*server
= NFS_SERVER(dir
);
3124 data
->msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_CREATE
];
3125 data
->msg
.rpc_argp
= &data
->arg
;
3126 data
->msg
.rpc_resp
= &data
->res
;
3127 data
->arg
.dir_fh
= NFS_FH(dir
);
3128 data
->arg
.server
= server
;
3129 data
->arg
.name
= name
;
3130 data
->arg
.attrs
= sattr
;
3131 data
->arg
.ftype
= ftype
;
3132 data
->arg
.bitmask
= server
->attr_bitmask
;
3133 data
->res
.server
= server
;
3134 data
->res
.fh
= &data
->fh
;
3135 data
->res
.fattr
= &data
->fattr
;
3136 nfs_fattr_init(data
->res
.fattr
);
3141 static int nfs4_do_create(struct inode
*dir
, struct dentry
*dentry
, struct nfs4_createdata
*data
)
3143 int status
= nfs4_call_sync(NFS_SERVER(dir
)->client
, NFS_SERVER(dir
), &data
->msg
,
3144 &data
->arg
.seq_args
, &data
->res
.seq_res
, 1);
3146 update_changeattr(dir
, &data
->res
.dir_cinfo
);
3147 status
= nfs_instantiate(dentry
, data
->res
.fh
, data
->res
.fattr
);
3152 static void nfs4_free_createdata(struct nfs4_createdata
*data
)
3157 static int _nfs4_proc_symlink(struct inode
*dir
, struct dentry
*dentry
,
3158 struct page
*page
, unsigned int len
, struct iattr
*sattr
)
3160 struct nfs4_createdata
*data
;
3161 int status
= -ENAMETOOLONG
;
3163 if (len
> NFS4_MAXPATHLEN
)
3167 data
= nfs4_alloc_createdata(dir
, &dentry
->d_name
, sattr
, NF4LNK
);
3171 data
->msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SYMLINK
];
3172 data
->arg
.u
.symlink
.pages
= &page
;
3173 data
->arg
.u
.symlink
.len
= len
;
3175 status
= nfs4_do_create(dir
, dentry
, data
);
3177 nfs4_free_createdata(data
);
3182 static int nfs4_proc_symlink(struct inode
*dir
, struct dentry
*dentry
,
3183 struct page
*page
, unsigned int len
, struct iattr
*sattr
)
3185 struct nfs4_exception exception
= { };
3188 err
= nfs4_handle_exception(NFS_SERVER(dir
),
3189 _nfs4_proc_symlink(dir
, dentry
, page
,
3192 } while (exception
.retry
);
3196 static int _nfs4_proc_mkdir(struct inode
*dir
, struct dentry
*dentry
,
3197 struct iattr
*sattr
)
3199 struct nfs4_createdata
*data
;
3200 int status
= -ENOMEM
;
3202 data
= nfs4_alloc_createdata(dir
, &dentry
->d_name
, sattr
, NF4DIR
);
3206 status
= nfs4_do_create(dir
, dentry
, data
);
3208 nfs4_free_createdata(data
);
3213 static int nfs4_proc_mkdir(struct inode
*dir
, struct dentry
*dentry
,
3214 struct iattr
*sattr
)
3216 struct nfs4_exception exception
= { };
3219 sattr
->ia_mode
&= ~current_umask();
3221 err
= nfs4_handle_exception(NFS_SERVER(dir
),
3222 _nfs4_proc_mkdir(dir
, dentry
, sattr
),
3224 } while (exception
.retry
);
3228 static int _nfs4_proc_readdir(struct dentry
*dentry
, struct rpc_cred
*cred
,
3229 u64 cookie
, struct page
**pages
, unsigned int count
, int plus
)
3231 struct inode
*dir
= dentry
->d_inode
;
3232 struct nfs4_readdir_arg args
= {
3237 .bitmask
= NFS_SERVER(dentry
->d_inode
)->attr_bitmask
,
3240 struct nfs4_readdir_res res
;
3241 struct rpc_message msg
= {
3242 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_READDIR
],
3249 dprintk("%s: dentry = %s/%s, cookie = %Lu\n", __func__
,
3250 dentry
->d_parent
->d_name
.name
,
3251 dentry
->d_name
.name
,
3252 (unsigned long long)cookie
);
3253 nfs4_setup_readdir(cookie
, NFS_I(dir
)->cookieverf
, dentry
, &args
);
3254 res
.pgbase
= args
.pgbase
;
3255 status
= nfs4_call_sync(NFS_SERVER(dir
)->client
, NFS_SERVER(dir
), &msg
, &args
.seq_args
, &res
.seq_res
, 0);
3257 memcpy(NFS_I(dir
)->cookieverf
, res
.verifier
.data
, NFS4_VERIFIER_SIZE
);
3258 status
+= args
.pgbase
;
3261 nfs_invalidate_atime(dir
);
3263 dprintk("%s: returns %d\n", __func__
, status
);
3267 static int nfs4_proc_readdir(struct dentry
*dentry
, struct rpc_cred
*cred
,
3268 u64 cookie
, struct page
**pages
, unsigned int count
, int plus
)
3270 struct nfs4_exception exception
= { };
3273 err
= nfs4_handle_exception(NFS_SERVER(dentry
->d_inode
),
3274 _nfs4_proc_readdir(dentry
, cred
, cookie
,
3275 pages
, count
, plus
),
3277 } while (exception
.retry
);
3281 static int _nfs4_proc_mknod(struct inode
*dir
, struct dentry
*dentry
,
3282 struct iattr
*sattr
, dev_t rdev
)
3284 struct nfs4_createdata
*data
;
3285 int mode
= sattr
->ia_mode
;
3286 int status
= -ENOMEM
;
3288 data
= nfs4_alloc_createdata(dir
, &dentry
->d_name
, sattr
, NF4SOCK
);
3293 data
->arg
.ftype
= NF4FIFO
;
3294 else if (S_ISBLK(mode
)) {
3295 data
->arg
.ftype
= NF4BLK
;
3296 data
->arg
.u
.device
.specdata1
= MAJOR(rdev
);
3297 data
->arg
.u
.device
.specdata2
= MINOR(rdev
);
3299 else if (S_ISCHR(mode
)) {
3300 data
->arg
.ftype
= NF4CHR
;
3301 data
->arg
.u
.device
.specdata1
= MAJOR(rdev
);
3302 data
->arg
.u
.device
.specdata2
= MINOR(rdev
);
3303 } else if (!S_ISSOCK(mode
)) {
3308 status
= nfs4_do_create(dir
, dentry
, data
);
3310 nfs4_free_createdata(data
);
3315 static int nfs4_proc_mknod(struct inode
*dir
, struct dentry
*dentry
,
3316 struct iattr
*sattr
, dev_t rdev
)
3318 struct nfs4_exception exception
= { };
3321 sattr
->ia_mode
&= ~current_umask();
3323 err
= nfs4_handle_exception(NFS_SERVER(dir
),
3324 _nfs4_proc_mknod(dir
, dentry
, sattr
, rdev
),
3326 } while (exception
.retry
);
3330 static int _nfs4_proc_statfs(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
3331 struct nfs_fsstat
*fsstat
)
3333 struct nfs4_statfs_arg args
= {
3335 .bitmask
= server
->attr_bitmask
,
3337 struct nfs4_statfs_res res
= {
3340 struct rpc_message msg
= {
3341 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_STATFS
],
3346 nfs_fattr_init(fsstat
->fattr
);
3347 return nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
3350 static int nfs4_proc_statfs(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fsstat
*fsstat
)
3352 struct nfs4_exception exception
= { };
3355 err
= nfs4_handle_exception(server
,
3356 _nfs4_proc_statfs(server
, fhandle
, fsstat
),
3358 } while (exception
.retry
);
3362 static int _nfs4_do_fsinfo(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
3363 struct nfs_fsinfo
*fsinfo
)
3365 struct nfs4_fsinfo_arg args
= {
3367 .bitmask
= server
->attr_bitmask
,
3369 struct nfs4_fsinfo_res res
= {
3372 struct rpc_message msg
= {
3373 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_FSINFO
],
3378 return nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
3381 static int nfs4_do_fsinfo(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fsinfo
*fsinfo
)
3383 struct nfs4_exception exception
= { };
3387 err
= nfs4_handle_exception(server
,
3388 _nfs4_do_fsinfo(server
, fhandle
, fsinfo
),
3390 } while (exception
.retry
);
3394 static int nfs4_proc_fsinfo(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fsinfo
*fsinfo
)
3398 nfs_fattr_init(fsinfo
->fattr
);
3399 error
= nfs4_do_fsinfo(server
, fhandle
, fsinfo
);
3401 /* block layout checks this! */
3402 server
->pnfs_blksize
= fsinfo
->blksize
;
3403 set_pnfs_layoutdriver(server
, fhandle
, fsinfo
->layouttype
);
3409 static int _nfs4_proc_pathconf(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
3410 struct nfs_pathconf
*pathconf
)
3412 struct nfs4_pathconf_arg args
= {
3414 .bitmask
= server
->attr_bitmask
,
3416 struct nfs4_pathconf_res res
= {
3417 .pathconf
= pathconf
,
3419 struct rpc_message msg
= {
3420 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_PATHCONF
],
3425 /* None of the pathconf attributes are mandatory to implement */
3426 if ((args
.bitmask
[0] & nfs4_pathconf_bitmap
[0]) == 0) {
3427 memset(pathconf
, 0, sizeof(*pathconf
));
3431 nfs_fattr_init(pathconf
->fattr
);
3432 return nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
3435 static int nfs4_proc_pathconf(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
3436 struct nfs_pathconf
*pathconf
)
3438 struct nfs4_exception exception
= { };
3442 err
= nfs4_handle_exception(server
,
3443 _nfs4_proc_pathconf(server
, fhandle
, pathconf
),
3445 } while (exception
.retry
);
3449 void __nfs4_read_done_cb(struct nfs_read_data
*data
)
3451 nfs_invalidate_atime(data
->header
->inode
);
3454 static int nfs4_read_done_cb(struct rpc_task
*task
, struct nfs_read_data
*data
)
3456 struct nfs_server
*server
= NFS_SERVER(data
->header
->inode
);
3458 if (nfs4_async_handle_error(task
, server
, data
->args
.context
->state
) == -EAGAIN
) {
3459 rpc_restart_call_prepare(task
);
3463 __nfs4_read_done_cb(data
);
3464 if (task
->tk_status
> 0)
3465 renew_lease(server
, data
->timestamp
);
3469 static int nfs4_read_done(struct rpc_task
*task
, struct nfs_read_data
*data
)
3472 dprintk("--> %s\n", __func__
);
3474 if (!nfs4_sequence_done(task
, &data
->res
.seq_res
))
3477 return data
->read_done_cb
? data
->read_done_cb(task
, data
) :
3478 nfs4_read_done_cb(task
, data
);
3481 static void nfs4_proc_read_setup(struct nfs_read_data
*data
, struct rpc_message
*msg
)
3483 data
->timestamp
= jiffies
;
3484 data
->read_done_cb
= nfs4_read_done_cb
;
3485 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_READ
];
3486 nfs41_init_sequence(&data
->args
.seq_args
, &data
->res
.seq_res
, 0);
3489 static void nfs4_proc_read_rpc_prepare(struct rpc_task
*task
, struct nfs_read_data
*data
)
3491 nfs4_setup_sequence(NFS_SERVER(data
->header
->inode
),
3492 &data
->args
.seq_args
,
3497 static int nfs4_write_done_cb(struct rpc_task
*task
, struct nfs_write_data
*data
)
3499 struct inode
*inode
= data
->header
->inode
;
3501 if (nfs4_async_handle_error(task
, NFS_SERVER(inode
), data
->args
.context
->state
) == -EAGAIN
) {
3502 rpc_restart_call_prepare(task
);
3505 if (task
->tk_status
>= 0) {
3506 renew_lease(NFS_SERVER(inode
), data
->timestamp
);
3507 nfs_post_op_update_inode_force_wcc(inode
, &data
->fattr
);
3512 static int nfs4_write_done(struct rpc_task
*task
, struct nfs_write_data
*data
)
3514 if (!nfs4_sequence_done(task
, &data
->res
.seq_res
))
3516 return data
->write_done_cb
? data
->write_done_cb(task
, data
) :
3517 nfs4_write_done_cb(task
, data
);
3521 bool nfs4_write_need_cache_consistency_data(const struct nfs_write_data
*data
)
3523 const struct nfs_pgio_header
*hdr
= data
->header
;
3525 /* Don't request attributes for pNFS or O_DIRECT writes */
3526 if (data
->ds_clp
!= NULL
|| hdr
->dreq
!= NULL
)
3528 /* Otherwise, request attributes if and only if we don't hold
3531 return nfs4_have_delegation(hdr
->inode
, FMODE_READ
) == 0;
3534 static void nfs4_proc_write_setup(struct nfs_write_data
*data
, struct rpc_message
*msg
)
3536 struct nfs_server
*server
= NFS_SERVER(data
->header
->inode
);
3538 if (!nfs4_write_need_cache_consistency_data(data
)) {
3539 data
->args
.bitmask
= NULL
;
3540 data
->res
.fattr
= NULL
;
3542 data
->args
.bitmask
= server
->cache_consistency_bitmask
;
3544 if (!data
->write_done_cb
)
3545 data
->write_done_cb
= nfs4_write_done_cb
;
3546 data
->res
.server
= server
;
3547 data
->timestamp
= jiffies
;
3549 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_WRITE
];
3550 nfs41_init_sequence(&data
->args
.seq_args
, &data
->res
.seq_res
, 1);
3553 static void nfs4_proc_write_rpc_prepare(struct rpc_task
*task
, struct nfs_write_data
*data
)
3555 nfs4_setup_sequence(NFS_SERVER(data
->header
->inode
),
3556 &data
->args
.seq_args
,
3561 static void nfs4_proc_commit_rpc_prepare(struct rpc_task
*task
, struct nfs_commit_data
*data
)
3563 nfs4_setup_sequence(NFS_SERVER(data
->inode
),
3564 &data
->args
.seq_args
,
3569 static int nfs4_commit_done_cb(struct rpc_task
*task
, struct nfs_commit_data
*data
)
3571 struct inode
*inode
= data
->inode
;
3573 if (nfs4_async_handle_error(task
, NFS_SERVER(inode
), NULL
) == -EAGAIN
) {
3574 rpc_restart_call_prepare(task
);
3580 static int nfs4_commit_done(struct rpc_task
*task
, struct nfs_commit_data
*data
)
3582 if (!nfs4_sequence_done(task
, &data
->res
.seq_res
))
3584 return data
->commit_done_cb(task
, data
);
3587 static void nfs4_proc_commit_setup(struct nfs_commit_data
*data
, struct rpc_message
*msg
)
3589 struct nfs_server
*server
= NFS_SERVER(data
->inode
);
3591 if (data
->commit_done_cb
== NULL
)
3592 data
->commit_done_cb
= nfs4_commit_done_cb
;
3593 data
->res
.server
= server
;
3594 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_COMMIT
];
3595 nfs41_init_sequence(&data
->args
.seq_args
, &data
->res
.seq_res
, 1);
3598 struct nfs4_renewdata
{
3599 struct nfs_client
*client
;
3600 unsigned long timestamp
;
3604 * nfs4_proc_async_renew(): This is not one of the nfs_rpc_ops; it is a special
3605 * standalone procedure for queueing an asynchronous RENEW.
3607 static void nfs4_renew_release(void *calldata
)
3609 struct nfs4_renewdata
*data
= calldata
;
3610 struct nfs_client
*clp
= data
->client
;
3612 if (atomic_read(&clp
->cl_count
) > 1)
3613 nfs4_schedule_state_renewal(clp
);
3614 nfs_put_client(clp
);
3618 static void nfs4_renew_done(struct rpc_task
*task
, void *calldata
)
3620 struct nfs4_renewdata
*data
= calldata
;
3621 struct nfs_client
*clp
= data
->client
;
3622 unsigned long timestamp
= data
->timestamp
;
3624 if (task
->tk_status
< 0) {
3625 /* Unless we're shutting down, schedule state recovery! */
3626 if (test_bit(NFS_CS_RENEWD
, &clp
->cl_res_state
) == 0)
3628 if (task
->tk_status
!= NFS4ERR_CB_PATH_DOWN
) {
3629 nfs4_schedule_lease_recovery(clp
);
3632 nfs4_schedule_path_down_recovery(clp
);
3634 do_renew_lease(clp
, timestamp
);
3637 static const struct rpc_call_ops nfs4_renew_ops
= {
3638 .rpc_call_done
= nfs4_renew_done
,
3639 .rpc_release
= nfs4_renew_release
,
3642 static int nfs4_proc_async_renew(struct nfs_client
*clp
, struct rpc_cred
*cred
, unsigned renew_flags
)
3644 struct rpc_message msg
= {
3645 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RENEW
],
3649 struct nfs4_renewdata
*data
;
3651 if (renew_flags
== 0)
3653 if (!atomic_inc_not_zero(&clp
->cl_count
))
3655 data
= kmalloc(sizeof(*data
), GFP_NOFS
);
3659 data
->timestamp
= jiffies
;
3660 return rpc_call_async(clp
->cl_rpcclient
, &msg
, RPC_TASK_SOFT
,
3661 &nfs4_renew_ops
, data
);
3664 static int nfs4_proc_renew(struct nfs_client
*clp
, struct rpc_cred
*cred
)
3666 struct rpc_message msg
= {
3667 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RENEW
],
3671 unsigned long now
= jiffies
;
3674 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, 0);
3677 do_renew_lease(clp
, now
);
3681 static inline int nfs4_server_supports_acls(struct nfs_server
*server
)
3683 return (server
->caps
& NFS_CAP_ACLS
)
3684 && (server
->acl_bitmask
& ACL4_SUPPORT_ALLOW_ACL
)
3685 && (server
->acl_bitmask
& ACL4_SUPPORT_DENY_ACL
);
3688 /* Assuming that XATTR_SIZE_MAX is a multiple of PAGE_SIZE, and that
3689 * it's OK to put sizeof(void) * (XATTR_SIZE_MAX/PAGE_SIZE) bytes on
3692 #define NFS4ACL_MAXPAGES DIV_ROUND_UP(XATTR_SIZE_MAX, PAGE_SIZE)
3694 static int buf_to_pages_noslab(const void *buf
, size_t buflen
,
3695 struct page
**pages
, unsigned int *pgbase
)
3697 struct page
*newpage
, **spages
;
3703 len
= min_t(size_t, PAGE_SIZE
, buflen
);
3704 newpage
= alloc_page(GFP_KERNEL
);
3706 if (newpage
== NULL
)
3708 memcpy(page_address(newpage
), buf
, len
);
3713 } while (buflen
!= 0);
3719 __free_page(spages
[rc
-1]);
3723 struct nfs4_cached_acl
{
3729 static void nfs4_set_cached_acl(struct inode
*inode
, struct nfs4_cached_acl
*acl
)
3731 struct nfs_inode
*nfsi
= NFS_I(inode
);
3733 spin_lock(&inode
->i_lock
);
3734 kfree(nfsi
->nfs4_acl
);
3735 nfsi
->nfs4_acl
= acl
;
3736 spin_unlock(&inode
->i_lock
);
3739 static void nfs4_zap_acl_attr(struct inode
*inode
)
3741 nfs4_set_cached_acl(inode
, NULL
);
3744 static inline ssize_t
nfs4_read_cached_acl(struct inode
*inode
, char *buf
, size_t buflen
)
3746 struct nfs_inode
*nfsi
= NFS_I(inode
);
3747 struct nfs4_cached_acl
*acl
;
3750 spin_lock(&inode
->i_lock
);
3751 acl
= nfsi
->nfs4_acl
;
3754 if (buf
== NULL
) /* user is just asking for length */
3756 if (acl
->cached
== 0)
3758 ret
= -ERANGE
; /* see getxattr(2) man page */
3759 if (acl
->len
> buflen
)
3761 memcpy(buf
, acl
->data
, acl
->len
);
3765 spin_unlock(&inode
->i_lock
);
3769 static void nfs4_write_cached_acl(struct inode
*inode
, struct page
**pages
, size_t pgbase
, size_t acl_len
)
3771 struct nfs4_cached_acl
*acl
;
3772 size_t buflen
= sizeof(*acl
) + acl_len
;
3774 if (buflen
<= PAGE_SIZE
) {
3775 acl
= kmalloc(buflen
, GFP_KERNEL
);
3779 _copy_from_pages(acl
->data
, pages
, pgbase
, acl_len
);
3781 acl
= kmalloc(sizeof(*acl
), GFP_KERNEL
);
3788 nfs4_set_cached_acl(inode
, acl
);
3792 * The getxattr API returns the required buffer length when called with a
3793 * NULL buf. The NFSv4 acl tool then calls getxattr again after allocating
3794 * the required buf. On a NULL buf, we send a page of data to the server
3795 * guessing that the ACL request can be serviced by a page. If so, we cache
3796 * up to the page of ACL data, and the 2nd call to getxattr is serviced by
3797 * the cache. If not so, we throw away the page, and cache the required
3798 * length. The next getxattr call will then produce another round trip to
3799 * the server, this time with the input buf of the required size.
3801 static ssize_t
__nfs4_get_acl_uncached(struct inode
*inode
, void *buf
, size_t buflen
)
3803 struct page
*pages
[NFS4ACL_MAXPAGES
] = {NULL
, };
3804 struct nfs_getaclargs args
= {
3805 .fh
= NFS_FH(inode
),
3809 struct nfs_getaclres res
= {
3812 struct rpc_message msg
= {
3813 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GETACL
],
3817 unsigned int npages
= DIV_ROUND_UP(buflen
, PAGE_SIZE
);
3818 int ret
= -ENOMEM
, i
;
3820 /* As long as we're doing a round trip to the server anyway,
3821 * let's be prepared for a page of acl data. */
3824 if (npages
> ARRAY_SIZE(pages
))
3827 for (i
= 0; i
< npages
; i
++) {
3828 pages
[i
] = alloc_page(GFP_KERNEL
);
3833 /* for decoding across pages */
3834 res
.acl_scratch
= alloc_page(GFP_KERNEL
);
3835 if (!res
.acl_scratch
)
3838 args
.acl_len
= npages
* PAGE_SIZE
;
3839 args
.acl_pgbase
= 0;
3841 dprintk("%s buf %p buflen %zu npages %d args.acl_len %zu\n",
3842 __func__
, buf
, buflen
, npages
, args
.acl_len
);
3843 ret
= nfs4_call_sync(NFS_SERVER(inode
)->client
, NFS_SERVER(inode
),
3844 &msg
, &args
.seq_args
, &res
.seq_res
, 0);
3848 /* Handle the case where the passed-in buffer is too short */
3849 if (res
.acl_flags
& NFS4_ACL_TRUNC
) {
3850 /* Did the user only issue a request for the acl length? */
3856 nfs4_write_cached_acl(inode
, pages
, res
.acl_data_offset
, res
.acl_len
);
3858 if (res
.acl_len
> buflen
) {
3862 _copy_from_pages(buf
, pages
, res
.acl_data_offset
, res
.acl_len
);
3867 for (i
= 0; i
< npages
; i
++)
3869 __free_page(pages
[i
]);
3870 if (res
.acl_scratch
)
3871 __free_page(res
.acl_scratch
);
3875 static ssize_t
nfs4_get_acl_uncached(struct inode
*inode
, void *buf
, size_t buflen
)
3877 struct nfs4_exception exception
= { };
3880 ret
= __nfs4_get_acl_uncached(inode
, buf
, buflen
);
3883 ret
= nfs4_handle_exception(NFS_SERVER(inode
), ret
, &exception
);
3884 } while (exception
.retry
);
3888 static ssize_t
nfs4_proc_get_acl(struct inode
*inode
, void *buf
, size_t buflen
)
3890 struct nfs_server
*server
= NFS_SERVER(inode
);
3893 if (!nfs4_server_supports_acls(server
))
3895 ret
= nfs_revalidate_inode(server
, inode
);
3898 if (NFS_I(inode
)->cache_validity
& NFS_INO_INVALID_ACL
)
3899 nfs_zap_acl_cache(inode
);
3900 ret
= nfs4_read_cached_acl(inode
, buf
, buflen
);
3902 /* -ENOENT is returned if there is no ACL or if there is an ACL
3903 * but no cached acl data, just the acl length */
3905 return nfs4_get_acl_uncached(inode
, buf
, buflen
);
3908 static int __nfs4_proc_set_acl(struct inode
*inode
, const void *buf
, size_t buflen
)
3910 struct nfs_server
*server
= NFS_SERVER(inode
);
3911 struct page
*pages
[NFS4ACL_MAXPAGES
];
3912 struct nfs_setaclargs arg
= {
3913 .fh
= NFS_FH(inode
),
3917 struct nfs_setaclres res
;
3918 struct rpc_message msg
= {
3919 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETACL
],
3923 unsigned int npages
= DIV_ROUND_UP(buflen
, PAGE_SIZE
);
3926 if (!nfs4_server_supports_acls(server
))
3928 if (npages
> ARRAY_SIZE(pages
))
3930 i
= buf_to_pages_noslab(buf
, buflen
, arg
.acl_pages
, &arg
.acl_pgbase
);
3933 nfs4_inode_return_delegation(inode
);
3934 ret
= nfs4_call_sync(server
->client
, server
, &msg
, &arg
.seq_args
, &res
.seq_res
, 1);
3937 * Free each page after tx, so the only ref left is
3938 * held by the network stack
3941 put_page(pages
[i
-1]);
3944 * Acl update can result in inode attribute update.
3945 * so mark the attribute cache invalid.
3947 spin_lock(&inode
->i_lock
);
3948 NFS_I(inode
)->cache_validity
|= NFS_INO_INVALID_ATTR
;
3949 spin_unlock(&inode
->i_lock
);
3950 nfs_access_zap_cache(inode
);
3951 nfs_zap_acl_cache(inode
);
3955 static int nfs4_proc_set_acl(struct inode
*inode
, const void *buf
, size_t buflen
)
3957 struct nfs4_exception exception
= { };
3960 err
= nfs4_handle_exception(NFS_SERVER(inode
),
3961 __nfs4_proc_set_acl(inode
, buf
, buflen
),
3963 } while (exception
.retry
);
3968 nfs4_async_handle_error(struct rpc_task
*task
, const struct nfs_server
*server
, struct nfs4_state
*state
)
3970 struct nfs_client
*clp
= server
->nfs_client
;
3972 if (task
->tk_status
>= 0)
3974 switch(task
->tk_status
) {
3975 case -NFS4ERR_DELEG_REVOKED
:
3976 case -NFS4ERR_ADMIN_REVOKED
:
3977 case -NFS4ERR_BAD_STATEID
:
3980 nfs_remove_bad_delegation(state
->inode
);
3981 case -NFS4ERR_OPENMODE
:
3984 nfs4_schedule_stateid_recovery(server
, state
);
3985 goto wait_on_recovery
;
3986 case -NFS4ERR_EXPIRED
:
3988 nfs4_schedule_stateid_recovery(server
, state
);
3989 case -NFS4ERR_STALE_STATEID
:
3990 case -NFS4ERR_STALE_CLIENTID
:
3991 nfs4_schedule_lease_recovery(clp
);
3992 goto wait_on_recovery
;
3993 #if defined(CONFIG_NFS_V4_1)
3994 case -NFS4ERR_BADSESSION
:
3995 case -NFS4ERR_BADSLOT
:
3996 case -NFS4ERR_BAD_HIGH_SLOT
:
3997 case -NFS4ERR_DEADSESSION
:
3998 case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION
:
3999 case -NFS4ERR_SEQ_FALSE_RETRY
:
4000 case -NFS4ERR_SEQ_MISORDERED
:
4001 dprintk("%s ERROR %d, Reset session\n", __func__
,
4003 nfs4_schedule_session_recovery(clp
->cl_session
, task
->tk_status
);
4004 task
->tk_status
= 0;
4006 #endif /* CONFIG_NFS_V4_1 */
4007 case -NFS4ERR_DELAY
:
4008 nfs_inc_server_stats(server
, NFSIOS_DELAY
);
4009 case -NFS4ERR_GRACE
:
4010 rpc_delay(task
, NFS4_POLL_RETRY_MAX
);
4011 task
->tk_status
= 0;
4013 case -NFS4ERR_RETRY_UNCACHED_REP
:
4014 case -NFS4ERR_OLD_STATEID
:
4015 task
->tk_status
= 0;
4018 task
->tk_status
= nfs4_map_errors(task
->tk_status
);
4021 rpc_sleep_on(&clp
->cl_rpcwaitq
, task
, NULL
);
4022 if (test_bit(NFS4CLNT_MANAGER_RUNNING
, &clp
->cl_state
) == 0)
4023 rpc_wake_up_queued_task(&clp
->cl_rpcwaitq
, task
);
4024 task
->tk_status
= 0;
4028 static void nfs4_init_boot_verifier(const struct nfs_client
*clp
,
4029 nfs4_verifier
*bootverf
)
4033 if (test_bit(NFS4CLNT_PURGE_STATE
, &clp
->cl_state
)) {
4034 /* An impossible timestamp guarantees this value
4035 * will never match a generated boot time. */
4037 verf
[1] = (__be32
)(NSEC_PER_SEC
+ 1);
4039 struct nfs_net
*nn
= net_generic(clp
->cl_net
, nfs_net_id
);
4040 verf
[0] = (__be32
)nn
->boot_time
.tv_sec
;
4041 verf
[1] = (__be32
)nn
->boot_time
.tv_nsec
;
4043 memcpy(bootverf
->data
, verf
, sizeof(bootverf
->data
));
4047 nfs4_init_nonuniform_client_string(const struct nfs_client
*clp
,
4048 char *buf
, size_t len
)
4050 unsigned int result
;
4053 result
= scnprintf(buf
, len
, "Linux NFSv4.0 %s/%s %s",
4055 rpc_peeraddr2str(clp
->cl_rpcclient
,
4057 rpc_peeraddr2str(clp
->cl_rpcclient
,
4058 RPC_DISPLAY_PROTO
));
4064 nfs4_init_uniform_client_string(const struct nfs_client
*clp
,
4065 char *buf
, size_t len
)
4067 char *nodename
= clp
->cl_rpcclient
->cl_nodename
;
4069 if (nfs4_client_id_uniquifier
[0] != '\0')
4070 nodename
= nfs4_client_id_uniquifier
;
4071 return scnprintf(buf
, len
, "Linux NFSv%u.%u %s",
4072 clp
->rpc_ops
->version
, clp
->cl_minorversion
,
4077 * nfs4_proc_setclientid - Negotiate client ID
4078 * @clp: state data structure
4079 * @program: RPC program for NFSv4 callback service
4080 * @port: IP port number for NFS4 callback service
4081 * @cred: RPC credential to use for this call
4082 * @res: where to place the result
4084 * Returns zero, a negative errno, or a negative NFS4ERR status code.
4086 int nfs4_proc_setclientid(struct nfs_client
*clp
, u32 program
,
4087 unsigned short port
, struct rpc_cred
*cred
,
4088 struct nfs4_setclientid_res
*res
)
4090 nfs4_verifier sc_verifier
;
4091 struct nfs4_setclientid setclientid
= {
4092 .sc_verifier
= &sc_verifier
,
4094 .sc_cb_ident
= clp
->cl_cb_ident
,
4096 struct rpc_message msg
= {
4097 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETCLIENTID
],
4098 .rpc_argp
= &setclientid
,
4104 /* nfs_client_id4 */
4105 nfs4_init_boot_verifier(clp
, &sc_verifier
);
4106 if (test_bit(NFS_CS_MIGRATION
, &clp
->cl_flags
))
4107 setclientid
.sc_name_len
=
4108 nfs4_init_uniform_client_string(clp
,
4109 setclientid
.sc_name
,
4110 sizeof(setclientid
.sc_name
));
4112 setclientid
.sc_name_len
=
4113 nfs4_init_nonuniform_client_string(clp
,
4114 setclientid
.sc_name
,
4115 sizeof(setclientid
.sc_name
));
4118 setclientid
.sc_netid_len
= scnprintf(setclientid
.sc_netid
,
4119 sizeof(setclientid
.sc_netid
),
4120 rpc_peeraddr2str(clp
->cl_rpcclient
,
4121 RPC_DISPLAY_NETID
));
4123 setclientid
.sc_uaddr_len
= scnprintf(setclientid
.sc_uaddr
,
4124 sizeof(setclientid
.sc_uaddr
), "%s.%u.%u",
4125 clp
->cl_ipaddr
, port
>> 8, port
& 255);
4127 dprintk("NFS call setclientid auth=%s, '%.*s'\n",
4128 clp
->cl_rpcclient
->cl_auth
->au_ops
->au_name
,
4129 setclientid
.sc_name_len
, setclientid
.sc_name
);
4130 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
4131 dprintk("NFS reply setclientid: %d\n", status
);
4136 * nfs4_proc_setclientid_confirm - Confirm client ID
4137 * @clp: state data structure
4138 * @res: result of a previous SETCLIENTID
4139 * @cred: RPC credential to use for this call
4141 * Returns zero, a negative errno, or a negative NFS4ERR status code.
4143 int nfs4_proc_setclientid_confirm(struct nfs_client
*clp
,
4144 struct nfs4_setclientid_res
*arg
,
4145 struct rpc_cred
*cred
)
4147 struct nfs_fsinfo fsinfo
;
4148 struct rpc_message msg
= {
4149 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETCLIENTID_CONFIRM
],
4151 .rpc_resp
= &fsinfo
,
4157 dprintk("NFS call setclientid_confirm auth=%s, (client ID %llx)\n",
4158 clp
->cl_rpcclient
->cl_auth
->au_ops
->au_name
,
4161 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
4163 spin_lock(&clp
->cl_lock
);
4164 clp
->cl_lease_time
= fsinfo
.lease_time
* HZ
;
4165 clp
->cl_last_renewal
= now
;
4166 spin_unlock(&clp
->cl_lock
);
4168 dprintk("NFS reply setclientid_confirm: %d\n", status
);
4172 struct nfs4_delegreturndata
{
4173 struct nfs4_delegreturnargs args
;
4174 struct nfs4_delegreturnres res
;
4176 nfs4_stateid stateid
;
4177 unsigned long timestamp
;
4178 struct nfs_fattr fattr
;
4182 static void nfs4_delegreturn_done(struct rpc_task
*task
, void *calldata
)
4184 struct nfs4_delegreturndata
*data
= calldata
;
4186 if (!nfs4_sequence_done(task
, &data
->res
.seq_res
))
4189 switch (task
->tk_status
) {
4190 case -NFS4ERR_STALE_STATEID
:
4191 case -NFS4ERR_EXPIRED
:
4193 renew_lease(data
->res
.server
, data
->timestamp
);
4196 if (nfs4_async_handle_error(task
, data
->res
.server
, NULL
) ==
4198 rpc_restart_call_prepare(task
);
4202 data
->rpc_status
= task
->tk_status
;
4205 static void nfs4_delegreturn_release(void *calldata
)
4210 #if defined(CONFIG_NFS_V4_1)
4211 static void nfs4_delegreturn_prepare(struct rpc_task
*task
, void *data
)
4213 struct nfs4_delegreturndata
*d_data
;
4215 d_data
= (struct nfs4_delegreturndata
*)data
;
4217 nfs4_setup_sequence(d_data
->res
.server
,
4218 &d_data
->args
.seq_args
,
4219 &d_data
->res
.seq_res
,
4222 #endif /* CONFIG_NFS_V4_1 */
4224 static const struct rpc_call_ops nfs4_delegreturn_ops
= {
4225 #if defined(CONFIG_NFS_V4_1)
4226 .rpc_call_prepare
= nfs4_delegreturn_prepare
,
4227 #endif /* CONFIG_NFS_V4_1 */
4228 .rpc_call_done
= nfs4_delegreturn_done
,
4229 .rpc_release
= nfs4_delegreturn_release
,
4232 static int _nfs4_proc_delegreturn(struct inode
*inode
, struct rpc_cred
*cred
, const nfs4_stateid
*stateid
, int issync
)
4234 struct nfs4_delegreturndata
*data
;
4235 struct nfs_server
*server
= NFS_SERVER(inode
);
4236 struct rpc_task
*task
;
4237 struct rpc_message msg
= {
4238 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_DELEGRETURN
],
4241 struct rpc_task_setup task_setup_data
= {
4242 .rpc_client
= server
->client
,
4243 .rpc_message
= &msg
,
4244 .callback_ops
= &nfs4_delegreturn_ops
,
4245 .flags
= RPC_TASK_ASYNC
,
4249 data
= kzalloc(sizeof(*data
), GFP_NOFS
);
4252 nfs41_init_sequence(&data
->args
.seq_args
, &data
->res
.seq_res
, 1);
4253 data
->args
.fhandle
= &data
->fh
;
4254 data
->args
.stateid
= &data
->stateid
;
4255 data
->args
.bitmask
= server
->cache_consistency_bitmask
;
4256 nfs_copy_fh(&data
->fh
, NFS_FH(inode
));
4257 nfs4_stateid_copy(&data
->stateid
, stateid
);
4258 data
->res
.fattr
= &data
->fattr
;
4259 data
->res
.server
= server
;
4260 nfs_fattr_init(data
->res
.fattr
);
4261 data
->timestamp
= jiffies
;
4262 data
->rpc_status
= 0;
4264 task_setup_data
.callback_data
= data
;
4265 msg
.rpc_argp
= &data
->args
;
4266 msg
.rpc_resp
= &data
->res
;
4267 task
= rpc_run_task(&task_setup_data
);
4269 return PTR_ERR(task
);
4272 status
= nfs4_wait_for_completion_rpc_task(task
);
4275 status
= data
->rpc_status
;
4277 nfs_post_op_update_inode_force_wcc(inode
, &data
->fattr
);
4279 nfs_refresh_inode(inode
, &data
->fattr
);
4285 int nfs4_proc_delegreturn(struct inode
*inode
, struct rpc_cred
*cred
, const nfs4_stateid
*stateid
, int issync
)
4287 struct nfs_server
*server
= NFS_SERVER(inode
);
4288 struct nfs4_exception exception
= { };
4291 err
= _nfs4_proc_delegreturn(inode
, cred
, stateid
, issync
);
4293 case -NFS4ERR_STALE_STATEID
:
4294 case -NFS4ERR_EXPIRED
:
4298 err
= nfs4_handle_exception(server
, err
, &exception
);
4299 } while (exception
.retry
);
4303 #define NFS4_LOCK_MINTIMEOUT (1 * HZ)
4304 #define NFS4_LOCK_MAXTIMEOUT (30 * HZ)
4307 * sleep, with exponential backoff, and retry the LOCK operation.
4309 static unsigned long
4310 nfs4_set_lock_task_retry(unsigned long timeout
)
4312 freezable_schedule_timeout_killable(timeout
);
4314 if (timeout
> NFS4_LOCK_MAXTIMEOUT
)
4315 return NFS4_LOCK_MAXTIMEOUT
;
4319 static int _nfs4_proc_getlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
4321 struct inode
*inode
= state
->inode
;
4322 struct nfs_server
*server
= NFS_SERVER(inode
);
4323 struct nfs_client
*clp
= server
->nfs_client
;
4324 struct nfs_lockt_args arg
= {
4325 .fh
= NFS_FH(inode
),
4328 struct nfs_lockt_res res
= {
4331 struct rpc_message msg
= {
4332 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOCKT
],
4335 .rpc_cred
= state
->owner
->so_cred
,
4337 struct nfs4_lock_state
*lsp
;
4340 arg
.lock_owner
.clientid
= clp
->cl_clientid
;
4341 status
= nfs4_set_lock_state(state
, request
);
4344 lsp
= request
->fl_u
.nfs4_fl
.owner
;
4345 arg
.lock_owner
.id
= lsp
->ls_seqid
.owner_id
;
4346 arg
.lock_owner
.s_dev
= server
->s_dev
;
4347 status
= nfs4_call_sync(server
->client
, server
, &msg
, &arg
.seq_args
, &res
.seq_res
, 1);
4350 request
->fl_type
= F_UNLCK
;
4352 case -NFS4ERR_DENIED
:
4355 request
->fl_ops
->fl_release_private(request
);
4360 static int nfs4_proc_getlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
4362 struct nfs4_exception exception
= { };
4366 err
= nfs4_handle_exception(NFS_SERVER(state
->inode
),
4367 _nfs4_proc_getlk(state
, cmd
, request
),
4369 } while (exception
.retry
);
4373 static int do_vfs_lock(struct file
*file
, struct file_lock
*fl
)
4376 switch (fl
->fl_flags
& (FL_POSIX
|FL_FLOCK
)) {
4378 res
= posix_lock_file_wait(file
, fl
);
4381 res
= flock_lock_file_wait(file
, fl
);
4389 struct nfs4_unlockdata
{
4390 struct nfs_locku_args arg
;
4391 struct nfs_locku_res res
;
4392 struct nfs4_lock_state
*lsp
;
4393 struct nfs_open_context
*ctx
;
4394 struct file_lock fl
;
4395 const struct nfs_server
*server
;
4396 unsigned long timestamp
;
4399 static struct nfs4_unlockdata
*nfs4_alloc_unlockdata(struct file_lock
*fl
,
4400 struct nfs_open_context
*ctx
,
4401 struct nfs4_lock_state
*lsp
,
4402 struct nfs_seqid
*seqid
)
4404 struct nfs4_unlockdata
*p
;
4405 struct inode
*inode
= lsp
->ls_state
->inode
;
4407 p
= kzalloc(sizeof(*p
), GFP_NOFS
);
4410 p
->arg
.fh
= NFS_FH(inode
);
4412 p
->arg
.seqid
= seqid
;
4413 p
->res
.seqid
= seqid
;
4414 p
->arg
.stateid
= &lsp
->ls_stateid
;
4416 atomic_inc(&lsp
->ls_count
);
4417 /* Ensure we don't close file until we're done freeing locks! */
4418 p
->ctx
= get_nfs_open_context(ctx
);
4419 memcpy(&p
->fl
, fl
, sizeof(p
->fl
));
4420 p
->server
= NFS_SERVER(inode
);
4424 static void nfs4_locku_release_calldata(void *data
)
4426 struct nfs4_unlockdata
*calldata
= data
;
4427 nfs_free_seqid(calldata
->arg
.seqid
);
4428 nfs4_put_lock_state(calldata
->lsp
);
4429 put_nfs_open_context(calldata
->ctx
);
4433 static void nfs4_locku_done(struct rpc_task
*task
, void *data
)
4435 struct nfs4_unlockdata
*calldata
= data
;
4437 if (!nfs4_sequence_done(task
, &calldata
->res
.seq_res
))
4439 switch (task
->tk_status
) {
4441 nfs4_stateid_copy(&calldata
->lsp
->ls_stateid
,
4442 &calldata
->res
.stateid
);
4443 renew_lease(calldata
->server
, calldata
->timestamp
);
4445 case -NFS4ERR_BAD_STATEID
:
4446 case -NFS4ERR_OLD_STATEID
:
4447 case -NFS4ERR_STALE_STATEID
:
4448 case -NFS4ERR_EXPIRED
:
4451 if (nfs4_async_handle_error(task
, calldata
->server
, NULL
) == -EAGAIN
)
4452 rpc_restart_call_prepare(task
);
4454 nfs_release_seqid(calldata
->arg
.seqid
);
4457 static void nfs4_locku_prepare(struct rpc_task
*task
, void *data
)
4459 struct nfs4_unlockdata
*calldata
= data
;
4461 if (nfs_wait_on_sequence(calldata
->arg
.seqid
, task
) != 0)
4463 if (test_bit(NFS_LOCK_INITIALIZED
, &calldata
->lsp
->ls_flags
) == 0) {
4464 /* Note: exit _without_ running nfs4_locku_done */
4467 calldata
->timestamp
= jiffies
;
4468 if (nfs4_setup_sequence(calldata
->server
,
4469 &calldata
->arg
.seq_args
,
4470 &calldata
->res
.seq_res
,
4472 nfs_release_seqid(calldata
->arg
.seqid
);
4475 task
->tk_action
= NULL
;
4477 nfs4_sequence_done(task
, &calldata
->res
.seq_res
);
4480 static const struct rpc_call_ops nfs4_locku_ops
= {
4481 .rpc_call_prepare
= nfs4_locku_prepare
,
4482 .rpc_call_done
= nfs4_locku_done
,
4483 .rpc_release
= nfs4_locku_release_calldata
,
4486 static struct rpc_task
*nfs4_do_unlck(struct file_lock
*fl
,
4487 struct nfs_open_context
*ctx
,
4488 struct nfs4_lock_state
*lsp
,
4489 struct nfs_seqid
*seqid
)
4491 struct nfs4_unlockdata
*data
;
4492 struct rpc_message msg
= {
4493 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOCKU
],
4494 .rpc_cred
= ctx
->cred
,
4496 struct rpc_task_setup task_setup_data
= {
4497 .rpc_client
= NFS_CLIENT(lsp
->ls_state
->inode
),
4498 .rpc_message
= &msg
,
4499 .callback_ops
= &nfs4_locku_ops
,
4500 .workqueue
= nfsiod_workqueue
,
4501 .flags
= RPC_TASK_ASYNC
,
4504 /* Ensure this is an unlock - when canceling a lock, the
4505 * canceled lock is passed in, and it won't be an unlock.
4507 fl
->fl_type
= F_UNLCK
;
4509 data
= nfs4_alloc_unlockdata(fl
, ctx
, lsp
, seqid
);
4511 nfs_free_seqid(seqid
);
4512 return ERR_PTR(-ENOMEM
);
4515 nfs41_init_sequence(&data
->arg
.seq_args
, &data
->res
.seq_res
, 1);
4516 msg
.rpc_argp
= &data
->arg
;
4517 msg
.rpc_resp
= &data
->res
;
4518 task_setup_data
.callback_data
= data
;
4519 return rpc_run_task(&task_setup_data
);
4522 static int nfs4_proc_unlck(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
4524 struct inode
*inode
= state
->inode
;
4525 struct nfs4_state_owner
*sp
= state
->owner
;
4526 struct nfs_inode
*nfsi
= NFS_I(inode
);
4527 struct nfs_seqid
*seqid
;
4528 struct nfs4_lock_state
*lsp
;
4529 struct rpc_task
*task
;
4531 unsigned char fl_flags
= request
->fl_flags
;
4533 status
= nfs4_set_lock_state(state
, request
);
4534 /* Unlock _before_ we do the RPC call */
4535 request
->fl_flags
|= FL_EXISTS
;
4536 /* Exclude nfs_delegation_claim_locks() */
4537 mutex_lock(&sp
->so_delegreturn_mutex
);
4538 /* Exclude nfs4_reclaim_open_stateid() - note nesting! */
4539 down_read(&nfsi
->rwsem
);
4540 if (do_vfs_lock(request
->fl_file
, request
) == -ENOENT
) {
4541 up_read(&nfsi
->rwsem
);
4542 mutex_unlock(&sp
->so_delegreturn_mutex
);
4545 up_read(&nfsi
->rwsem
);
4546 mutex_unlock(&sp
->so_delegreturn_mutex
);
4549 /* Is this a delegated lock? */
4550 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
))
4552 lsp
= request
->fl_u
.nfs4_fl
.owner
;
4553 seqid
= nfs_alloc_seqid(&lsp
->ls_seqid
, GFP_KERNEL
);
4557 task
= nfs4_do_unlck(request
, nfs_file_open_context(request
->fl_file
), lsp
, seqid
);
4558 status
= PTR_ERR(task
);
4561 status
= nfs4_wait_for_completion_rpc_task(task
);
4564 request
->fl_flags
= fl_flags
;
4568 struct nfs4_lockdata
{
4569 struct nfs_lock_args arg
;
4570 struct nfs_lock_res res
;
4571 struct nfs4_lock_state
*lsp
;
4572 struct nfs_open_context
*ctx
;
4573 struct file_lock fl
;
4574 unsigned long timestamp
;
4577 struct nfs_server
*server
;
4580 static struct nfs4_lockdata
*nfs4_alloc_lockdata(struct file_lock
*fl
,
4581 struct nfs_open_context
*ctx
, struct nfs4_lock_state
*lsp
,
4584 struct nfs4_lockdata
*p
;
4585 struct inode
*inode
= lsp
->ls_state
->inode
;
4586 struct nfs_server
*server
= NFS_SERVER(inode
);
4588 p
= kzalloc(sizeof(*p
), gfp_mask
);
4592 p
->arg
.fh
= NFS_FH(inode
);
4594 p
->arg
.open_seqid
= nfs_alloc_seqid(&lsp
->ls_state
->owner
->so_seqid
, gfp_mask
);
4595 if (p
->arg
.open_seqid
== NULL
)
4597 p
->arg
.lock_seqid
= nfs_alloc_seqid(&lsp
->ls_seqid
, gfp_mask
);
4598 if (p
->arg
.lock_seqid
== NULL
)
4599 goto out_free_seqid
;
4600 p
->arg
.lock_stateid
= &lsp
->ls_stateid
;
4601 p
->arg
.lock_owner
.clientid
= server
->nfs_client
->cl_clientid
;
4602 p
->arg
.lock_owner
.id
= lsp
->ls_seqid
.owner_id
;
4603 p
->arg
.lock_owner
.s_dev
= server
->s_dev
;
4604 p
->res
.lock_seqid
= p
->arg
.lock_seqid
;
4607 atomic_inc(&lsp
->ls_count
);
4608 p
->ctx
= get_nfs_open_context(ctx
);
4609 memcpy(&p
->fl
, fl
, sizeof(p
->fl
));
4612 nfs_free_seqid(p
->arg
.open_seqid
);
4618 static void nfs4_lock_prepare(struct rpc_task
*task
, void *calldata
)
4620 struct nfs4_lockdata
*data
= calldata
;
4621 struct nfs4_state
*state
= data
->lsp
->ls_state
;
4623 dprintk("%s: begin!\n", __func__
);
4624 if (nfs_wait_on_sequence(data
->arg
.lock_seqid
, task
) != 0)
4626 /* Do we need to do an open_to_lock_owner? */
4627 if (!(data
->arg
.lock_seqid
->sequence
->flags
& NFS_SEQID_CONFIRMED
)) {
4628 if (nfs_wait_on_sequence(data
->arg
.open_seqid
, task
) != 0) {
4629 goto out_release_lock_seqid
;
4631 data
->arg
.open_stateid
= &state
->stateid
;
4632 data
->arg
.new_lock_owner
= 1;
4633 data
->res
.open_seqid
= data
->arg
.open_seqid
;
4635 data
->arg
.new_lock_owner
= 0;
4636 data
->timestamp
= jiffies
;
4637 if (nfs4_setup_sequence(data
->server
,
4638 &data
->arg
.seq_args
,
4642 nfs_release_seqid(data
->arg
.open_seqid
);
4643 out_release_lock_seqid
:
4644 nfs_release_seqid(data
->arg
.lock_seqid
);
4646 nfs4_sequence_done(task
, &data
->res
.seq_res
);
4647 dprintk("%s: done!, ret = %d\n", __func__
, data
->rpc_status
);
4650 static void nfs4_lock_done(struct rpc_task
*task
, void *calldata
)
4652 struct nfs4_lockdata
*data
= calldata
;
4654 dprintk("%s: begin!\n", __func__
);
4656 if (!nfs4_sequence_done(task
, &data
->res
.seq_res
))
4659 data
->rpc_status
= task
->tk_status
;
4660 if (data
->arg
.new_lock_owner
!= 0) {
4661 if (data
->rpc_status
== 0)
4662 nfs_confirm_seqid(&data
->lsp
->ls_seqid
, 0);
4666 if (data
->rpc_status
== 0) {
4667 nfs4_stateid_copy(&data
->lsp
->ls_stateid
, &data
->res
.stateid
);
4668 set_bit(NFS_LOCK_INITIALIZED
, &data
->lsp
->ls_flags
);
4669 renew_lease(NFS_SERVER(data
->ctx
->dentry
->d_inode
), data
->timestamp
);
4672 dprintk("%s: done, ret = %d!\n", __func__
, data
->rpc_status
);
4675 static void nfs4_lock_release(void *calldata
)
4677 struct nfs4_lockdata
*data
= calldata
;
4679 dprintk("%s: begin!\n", __func__
);
4680 nfs_free_seqid(data
->arg
.open_seqid
);
4681 if (data
->cancelled
!= 0) {
4682 struct rpc_task
*task
;
4683 task
= nfs4_do_unlck(&data
->fl
, data
->ctx
, data
->lsp
,
4684 data
->arg
.lock_seqid
);
4686 rpc_put_task_async(task
);
4687 dprintk("%s: cancelling lock!\n", __func__
);
4689 nfs_free_seqid(data
->arg
.lock_seqid
);
4690 nfs4_put_lock_state(data
->lsp
);
4691 put_nfs_open_context(data
->ctx
);
4693 dprintk("%s: done!\n", __func__
);
4696 static const struct rpc_call_ops nfs4_lock_ops
= {
4697 .rpc_call_prepare
= nfs4_lock_prepare
,
4698 .rpc_call_done
= nfs4_lock_done
,
4699 .rpc_release
= nfs4_lock_release
,
4702 static void nfs4_handle_setlk_error(struct nfs_server
*server
, struct nfs4_lock_state
*lsp
, int new_lock_owner
, int error
)
4705 case -NFS4ERR_ADMIN_REVOKED
:
4706 case -NFS4ERR_BAD_STATEID
:
4707 lsp
->ls_seqid
.flags
&= ~NFS_SEQID_CONFIRMED
;
4708 if (new_lock_owner
!= 0 ||
4709 test_bit(NFS_LOCK_INITIALIZED
, &lsp
->ls_flags
) != 0)
4710 nfs4_schedule_stateid_recovery(server
, lsp
->ls_state
);
4712 case -NFS4ERR_STALE_STATEID
:
4713 lsp
->ls_seqid
.flags
&= ~NFS_SEQID_CONFIRMED
;
4714 case -NFS4ERR_EXPIRED
:
4715 nfs4_schedule_lease_recovery(server
->nfs_client
);
4719 static int _nfs4_do_setlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*fl
, int recovery_type
)
4721 struct nfs4_lockdata
*data
;
4722 struct rpc_task
*task
;
4723 struct rpc_message msg
= {
4724 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOCK
],
4725 .rpc_cred
= state
->owner
->so_cred
,
4727 struct rpc_task_setup task_setup_data
= {
4728 .rpc_client
= NFS_CLIENT(state
->inode
),
4729 .rpc_message
= &msg
,
4730 .callback_ops
= &nfs4_lock_ops
,
4731 .workqueue
= nfsiod_workqueue
,
4732 .flags
= RPC_TASK_ASYNC
,
4736 dprintk("%s: begin!\n", __func__
);
4737 data
= nfs4_alloc_lockdata(fl
, nfs_file_open_context(fl
->fl_file
),
4738 fl
->fl_u
.nfs4_fl
.owner
,
4739 recovery_type
== NFS_LOCK_NEW
? GFP_KERNEL
: GFP_NOFS
);
4743 data
->arg
.block
= 1;
4744 nfs41_init_sequence(&data
->arg
.seq_args
, &data
->res
.seq_res
, 1);
4745 msg
.rpc_argp
= &data
->arg
;
4746 msg
.rpc_resp
= &data
->res
;
4747 task_setup_data
.callback_data
= data
;
4748 if (recovery_type
> NFS_LOCK_NEW
) {
4749 if (recovery_type
== NFS_LOCK_RECLAIM
)
4750 data
->arg
.reclaim
= NFS_LOCK_RECLAIM
;
4751 nfs4_set_sequence_privileged(&data
->arg
.seq_args
);
4753 task
= rpc_run_task(&task_setup_data
);
4755 return PTR_ERR(task
);
4756 ret
= nfs4_wait_for_completion_rpc_task(task
);
4758 ret
= data
->rpc_status
;
4760 nfs4_handle_setlk_error(data
->server
, data
->lsp
,
4761 data
->arg
.new_lock_owner
, ret
);
4763 data
->cancelled
= 1;
4765 dprintk("%s: done, ret = %d!\n", __func__
, ret
);
4769 static int nfs4_lock_reclaim(struct nfs4_state
*state
, struct file_lock
*request
)
4771 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
4772 struct nfs4_exception exception
= {
4773 .inode
= state
->inode
,
4778 /* Cache the lock if possible... */
4779 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) != 0)
4781 err
= _nfs4_do_setlk(state
, F_SETLK
, request
, NFS_LOCK_RECLAIM
);
4782 if (err
!= -NFS4ERR_DELAY
)
4784 nfs4_handle_exception(server
, err
, &exception
);
4785 } while (exception
.retry
);
4789 static int nfs4_lock_expired(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
,
4797 err
= nfs4_set_lock_state(state
, request
);
4801 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) != 0)
4803 err
= _nfs4_do_setlk(state
, F_SETLK
, request
, NFS_LOCK_EXPIRED
);
4807 case -NFS4ERR_GRACE
:
4808 case -NFS4ERR_DELAY
:
4809 nfs4_handle_exception(server
, err
, &exception
);
4812 } while (exception
.retry
);
4817 #if defined(CONFIG_NFS_V4_1)
4819 * nfs41_check_expired_locks - possibly free a lock stateid
4821 * @state: NFSv4 state for an inode
4823 * Returns NFS_OK if recovery for this stateid is now finished.
4824 * Otherwise a negative NFS4ERR value is returned.
4826 static int nfs41_check_expired_locks(struct nfs4_state
*state
)
4828 int status
, ret
= -NFS4ERR_BAD_STATEID
;
4829 struct nfs4_lock_state
*lsp
;
4830 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
4832 list_for_each_entry(lsp
, &state
->lock_states
, ls_locks
) {
4833 if (test_bit(NFS_LOCK_INITIALIZED
, &lsp
->ls_flags
)) {
4834 status
= nfs41_test_stateid(server
, &lsp
->ls_stateid
);
4835 if (status
!= NFS_OK
) {
4836 /* Free the stateid unless the server
4837 * informs us the stateid is unrecognized. */
4838 if (status
!= -NFS4ERR_BAD_STATEID
)
4839 nfs41_free_stateid(server
,
4841 clear_bit(NFS_LOCK_INITIALIZED
, &lsp
->ls_flags
);
4850 static int nfs41_lock_expired(struct nfs4_state
*state
, struct file_lock
*request
)
4852 int status
= NFS_OK
;
4854 if (test_bit(LK_STATE_IN_USE
, &state
->flags
))
4855 status
= nfs41_check_expired_locks(state
);
4856 if (status
!= NFS_OK
)
4857 status
= nfs4_lock_expired(state
, request
);
4862 static int _nfs4_proc_setlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
4864 struct nfs4_state_owner
*sp
= state
->owner
;
4865 struct nfs_inode
*nfsi
= NFS_I(state
->inode
);
4866 unsigned char fl_flags
= request
->fl_flags
;
4868 int status
= -ENOLCK
;
4870 if ((fl_flags
& FL_POSIX
) &&
4871 !test_bit(NFS_STATE_POSIX_LOCKS
, &state
->flags
))
4873 /* Is this a delegated open? */
4874 status
= nfs4_set_lock_state(state
, request
);
4877 request
->fl_flags
|= FL_ACCESS
;
4878 status
= do_vfs_lock(request
->fl_file
, request
);
4881 down_read(&nfsi
->rwsem
);
4882 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
)) {
4883 /* Yes: cache locks! */
4884 /* ...but avoid races with delegation recall... */
4885 request
->fl_flags
= fl_flags
& ~FL_SLEEP
;
4886 status
= do_vfs_lock(request
->fl_file
, request
);
4889 seq
= raw_seqcount_begin(&sp
->so_reclaim_seqcount
);
4890 up_read(&nfsi
->rwsem
);
4891 status
= _nfs4_do_setlk(state
, cmd
, request
, NFS_LOCK_NEW
);
4894 down_read(&nfsi
->rwsem
);
4895 if (read_seqcount_retry(&sp
->so_reclaim_seqcount
, seq
)) {
4896 status
= -NFS4ERR_DELAY
;
4899 /* Note: we always want to sleep here! */
4900 request
->fl_flags
= fl_flags
| FL_SLEEP
;
4901 if (do_vfs_lock(request
->fl_file
, request
) < 0)
4902 printk(KERN_WARNING
"NFS: %s: VFS is out of sync with lock "
4903 "manager!\n", __func__
);
4905 up_read(&nfsi
->rwsem
);
4907 request
->fl_flags
= fl_flags
;
4911 static int nfs4_proc_setlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
4913 struct nfs4_exception exception
= {
4915 .inode
= state
->inode
,
4920 err
= _nfs4_proc_setlk(state
, cmd
, request
);
4921 if (err
== -NFS4ERR_DENIED
)
4923 err
= nfs4_handle_exception(NFS_SERVER(state
->inode
),
4925 } while (exception
.retry
);
4930 nfs4_proc_lock(struct file
*filp
, int cmd
, struct file_lock
*request
)
4932 struct nfs_open_context
*ctx
;
4933 struct nfs4_state
*state
;
4934 unsigned long timeout
= NFS4_LOCK_MINTIMEOUT
;
4937 /* verify open state */
4938 ctx
= nfs_file_open_context(filp
);
4941 if (request
->fl_start
< 0 || request
->fl_end
< 0)
4944 if (IS_GETLK(cmd
)) {
4946 return nfs4_proc_getlk(state
, F_GETLK
, request
);
4950 if (!(IS_SETLK(cmd
) || IS_SETLKW(cmd
)))
4953 if (request
->fl_type
== F_UNLCK
) {
4955 return nfs4_proc_unlck(state
, cmd
, request
);
4962 * Don't rely on the VFS having checked the file open mode,
4963 * since it won't do this for flock() locks.
4965 switch (request
->fl_type
) {
4967 if (!(filp
->f_mode
& FMODE_READ
))
4971 if (!(filp
->f_mode
& FMODE_WRITE
))
4976 status
= nfs4_proc_setlk(state
, cmd
, request
);
4977 if ((status
!= -EAGAIN
) || IS_SETLK(cmd
))
4979 timeout
= nfs4_set_lock_task_retry(timeout
);
4980 status
= -ERESTARTSYS
;
4983 } while(status
< 0);
4987 int nfs4_lock_delegation_recall(struct nfs4_state
*state
, struct file_lock
*fl
)
4989 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
4990 struct nfs4_exception exception
= { };
4993 err
= nfs4_set_lock_state(state
, fl
);
4997 err
= _nfs4_do_setlk(state
, F_SETLK
, fl
, NFS_LOCK_NEW
);
5000 printk(KERN_ERR
"NFS: %s: unhandled error "
5001 "%d.\n", __func__
, err
);
5005 case -NFS4ERR_STALE_CLIENTID
:
5006 case -NFS4ERR_STALE_STATEID
:
5007 set_bit(NFS_DELEGATED_STATE
, &state
->flags
);
5008 case -NFS4ERR_EXPIRED
:
5009 nfs4_schedule_lease_recovery(server
->nfs_client
);
5012 case -NFS4ERR_BADSESSION
:
5013 case -NFS4ERR_BADSLOT
:
5014 case -NFS4ERR_BAD_HIGH_SLOT
:
5015 case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION
:
5016 case -NFS4ERR_DEADSESSION
:
5017 set_bit(NFS_DELEGATED_STATE
, &state
->flags
);
5018 nfs4_schedule_session_recovery(server
->nfs_client
->cl_session
, err
);
5021 case -NFS4ERR_DELEG_REVOKED
:
5022 case -NFS4ERR_ADMIN_REVOKED
:
5023 case -NFS4ERR_BAD_STATEID
:
5024 case -NFS4ERR_OPENMODE
:
5025 nfs4_schedule_stateid_recovery(server
, state
);
5029 case -NFS4ERR_DENIED
:
5030 /* kill_proc(fl->fl_pid, SIGLOST, 1); */
5034 set_bit(NFS_DELEGATED_STATE
, &state
->flags
);
5035 err
= nfs4_handle_exception(server
, err
, &exception
);
5036 } while (exception
.retry
);
5041 struct nfs_release_lockowner_data
{
5042 struct nfs4_lock_state
*lsp
;
5043 struct nfs_server
*server
;
5044 struct nfs_release_lockowner_args args
;
5047 static void nfs4_release_lockowner_release(void *calldata
)
5049 struct nfs_release_lockowner_data
*data
= calldata
;
5050 nfs4_free_lock_state(data
->server
, data
->lsp
);
5054 static const struct rpc_call_ops nfs4_release_lockowner_ops
= {
5055 .rpc_release
= nfs4_release_lockowner_release
,
5058 int nfs4_release_lockowner(struct nfs4_lock_state
*lsp
)
5060 struct nfs_server
*server
= lsp
->ls_state
->owner
->so_server
;
5061 struct nfs_release_lockowner_data
*data
;
5062 struct rpc_message msg
= {
5063 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RELEASE_LOCKOWNER
],
5066 if (server
->nfs_client
->cl_mvops
->minor_version
!= 0)
5068 data
= kmalloc(sizeof(*data
), GFP_NOFS
);
5072 data
->server
= server
;
5073 data
->args
.lock_owner
.clientid
= server
->nfs_client
->cl_clientid
;
5074 data
->args
.lock_owner
.id
= lsp
->ls_seqid
.owner_id
;
5075 data
->args
.lock_owner
.s_dev
= server
->s_dev
;
5076 msg
.rpc_argp
= &data
->args
;
5077 rpc_call_async(server
->client
, &msg
, 0, &nfs4_release_lockowner_ops
, data
);
5081 #define XATTR_NAME_NFSV4_ACL "system.nfs4_acl"
5083 static int nfs4_xattr_set_nfs4_acl(struct dentry
*dentry
, const char *key
,
5084 const void *buf
, size_t buflen
,
5085 int flags
, int type
)
5087 if (strcmp(key
, "") != 0)
5090 return nfs4_proc_set_acl(dentry
->d_inode
, buf
, buflen
);
5093 static int nfs4_xattr_get_nfs4_acl(struct dentry
*dentry
, const char *key
,
5094 void *buf
, size_t buflen
, int type
)
5096 if (strcmp(key
, "") != 0)
5099 return nfs4_proc_get_acl(dentry
->d_inode
, buf
, buflen
);
5102 static size_t nfs4_xattr_list_nfs4_acl(struct dentry
*dentry
, char *list
,
5103 size_t list_len
, const char *name
,
5104 size_t name_len
, int type
)
5106 size_t len
= sizeof(XATTR_NAME_NFSV4_ACL
);
5108 if (!nfs4_server_supports_acls(NFS_SERVER(dentry
->d_inode
)))
5111 if (list
&& len
<= list_len
)
5112 memcpy(list
, XATTR_NAME_NFSV4_ACL
, len
);
5117 * nfs_fhget will use either the mounted_on_fileid or the fileid
5119 static void nfs_fixup_referral_attributes(struct nfs_fattr
*fattr
)
5121 if (!(((fattr
->valid
& NFS_ATTR_FATTR_MOUNTED_ON_FILEID
) ||
5122 (fattr
->valid
& NFS_ATTR_FATTR_FILEID
)) &&
5123 (fattr
->valid
& NFS_ATTR_FATTR_FSID
) &&
5124 (fattr
->valid
& NFS_ATTR_FATTR_V4_LOCATIONS
)))
5127 fattr
->valid
|= NFS_ATTR_FATTR_TYPE
| NFS_ATTR_FATTR_MODE
|
5128 NFS_ATTR_FATTR_NLINK
| NFS_ATTR_FATTR_V4_REFERRAL
;
5129 fattr
->mode
= S_IFDIR
| S_IRUGO
| S_IXUGO
;
5133 static int _nfs4_proc_fs_locations(struct rpc_clnt
*client
, struct inode
*dir
,
5134 const struct qstr
*name
,
5135 struct nfs4_fs_locations
*fs_locations
,
5138 struct nfs_server
*server
= NFS_SERVER(dir
);
5140 [0] = FATTR4_WORD0_FSID
| FATTR4_WORD0_FS_LOCATIONS
,
5142 struct nfs4_fs_locations_arg args
= {
5143 .dir_fh
= NFS_FH(dir
),
5148 struct nfs4_fs_locations_res res
= {
5149 .fs_locations
= fs_locations
,
5151 struct rpc_message msg
= {
5152 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_FS_LOCATIONS
],
5158 dprintk("%s: start\n", __func__
);
5160 /* Ask for the fileid of the absent filesystem if mounted_on_fileid
5161 * is not supported */
5162 if (NFS_SERVER(dir
)->attr_bitmask
[1] & FATTR4_WORD1_MOUNTED_ON_FILEID
)
5163 bitmask
[1] |= FATTR4_WORD1_MOUNTED_ON_FILEID
;
5165 bitmask
[0] |= FATTR4_WORD0_FILEID
;
5167 nfs_fattr_init(&fs_locations
->fattr
);
5168 fs_locations
->server
= server
;
5169 fs_locations
->nlocations
= 0;
5170 status
= nfs4_call_sync(client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
5171 dprintk("%s: returned status = %d\n", __func__
, status
);
5175 int nfs4_proc_fs_locations(struct rpc_clnt
*client
, struct inode
*dir
,
5176 const struct qstr
*name
,
5177 struct nfs4_fs_locations
*fs_locations
,
5180 struct nfs4_exception exception
= { };
5183 err
= nfs4_handle_exception(NFS_SERVER(dir
),
5184 _nfs4_proc_fs_locations(client
, dir
, name
, fs_locations
, page
),
5186 } while (exception
.retry
);
5190 static int _nfs4_proc_secinfo(struct inode
*dir
, const struct qstr
*name
, struct nfs4_secinfo_flavors
*flavors
)
5193 struct nfs4_secinfo_arg args
= {
5194 .dir_fh
= NFS_FH(dir
),
5197 struct nfs4_secinfo_res res
= {
5200 struct rpc_message msg
= {
5201 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SECINFO
],
5206 dprintk("NFS call secinfo %s\n", name
->name
);
5207 status
= nfs4_call_sync(NFS_SERVER(dir
)->client
, NFS_SERVER(dir
), &msg
, &args
.seq_args
, &res
.seq_res
, 0);
5208 dprintk("NFS reply secinfo: %d\n", status
);
5212 int nfs4_proc_secinfo(struct inode
*dir
, const struct qstr
*name
,
5213 struct nfs4_secinfo_flavors
*flavors
)
5215 struct nfs4_exception exception
= { };
5218 err
= nfs4_handle_exception(NFS_SERVER(dir
),
5219 _nfs4_proc_secinfo(dir
, name
, flavors
),
5221 } while (exception
.retry
);
5225 #ifdef CONFIG_NFS_V4_1
5227 * Check the exchange flags returned by the server for invalid flags, having
5228 * both PNFS and NON_PNFS flags set, and not having one of NON_PNFS, PNFS, or
5231 static int nfs4_check_cl_exchange_flags(u32 flags
)
5233 if (flags
& ~EXCHGID4_FLAG_MASK_R
)
5235 if ((flags
& EXCHGID4_FLAG_USE_PNFS_MDS
) &&
5236 (flags
& EXCHGID4_FLAG_USE_NON_PNFS
))
5238 if (!(flags
& (EXCHGID4_FLAG_MASK_PNFS
)))
5242 return -NFS4ERR_INVAL
;
5246 nfs41_same_server_scope(struct nfs41_server_scope
*a
,
5247 struct nfs41_server_scope
*b
)
5249 if (a
->server_scope_sz
== b
->server_scope_sz
&&
5250 memcmp(a
->server_scope
, b
->server_scope
, a
->server_scope_sz
) == 0)
5257 * nfs4_proc_bind_conn_to_session()
5259 * The 4.1 client currently uses the same TCP connection for the
5260 * fore and backchannel.
5262 int nfs4_proc_bind_conn_to_session(struct nfs_client
*clp
, struct rpc_cred
*cred
)
5265 struct nfs41_bind_conn_to_session_res res
;
5266 struct rpc_message msg
= {
5268 &nfs4_procedures
[NFSPROC4_CLNT_BIND_CONN_TO_SESSION
],
5274 dprintk("--> %s\n", __func__
);
5276 res
.session
= kzalloc(sizeof(struct nfs4_session
), GFP_NOFS
);
5277 if (unlikely(res
.session
== NULL
)) {
5282 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
5284 if (memcmp(res
.session
->sess_id
.data
,
5285 clp
->cl_session
->sess_id
.data
, NFS4_MAX_SESSIONID_LEN
)) {
5286 dprintk("NFS: %s: Session ID mismatch\n", __func__
);
5290 if (res
.dir
!= NFS4_CDFS4_BOTH
) {
5291 dprintk("NFS: %s: Unexpected direction from server\n",
5296 if (res
.use_conn_in_rdma_mode
) {
5297 dprintk("NFS: %s: Server returned RDMA mode = true\n",
5306 dprintk("<-- %s status= %d\n", __func__
, status
);
5311 * nfs4_proc_exchange_id()
5313 * Returns zero, a negative errno, or a negative NFS4ERR status code.
5315 * Since the clientid has expired, all compounds using sessions
5316 * associated with the stale clientid will be returning
5317 * NFS4ERR_BADSESSION in the sequence operation, and will therefore
5318 * be in some phase of session reset.
5320 int nfs4_proc_exchange_id(struct nfs_client
*clp
, struct rpc_cred
*cred
)
5322 nfs4_verifier verifier
;
5323 struct nfs41_exchange_id_args args
= {
5324 .verifier
= &verifier
,
5326 .flags
= EXCHGID4_FLAG_SUPP_MOVED_REFER
,
5328 struct nfs41_exchange_id_res res
= {
5332 struct rpc_message msg
= {
5333 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_EXCHANGE_ID
],
5339 nfs4_init_boot_verifier(clp
, &verifier
);
5340 args
.id_len
= nfs4_init_uniform_client_string(clp
, args
.id
,
5342 dprintk("NFS call exchange_id auth=%s, '%.*s'\n",
5343 clp
->cl_rpcclient
->cl_auth
->au_ops
->au_name
,
5344 args
.id_len
, args
.id
);
5346 res
.server_owner
= kzalloc(sizeof(struct nfs41_server_owner
),
5348 if (unlikely(res
.server_owner
== NULL
)) {
5353 res
.server_scope
= kzalloc(sizeof(struct nfs41_server_scope
),
5355 if (unlikely(res
.server_scope
== NULL
)) {
5357 goto out_server_owner
;
5360 res
.impl_id
= kzalloc(sizeof(struct nfs41_impl_id
), GFP_NOFS
);
5361 if (unlikely(res
.impl_id
== NULL
)) {
5363 goto out_server_scope
;
5366 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
5368 status
= nfs4_check_cl_exchange_flags(res
.flags
);
5371 clp
->cl_clientid
= res
.clientid
;
5372 clp
->cl_exchange_flags
= (res
.flags
& ~EXCHGID4_FLAG_CONFIRMED_R
);
5373 if (!(res
.flags
& EXCHGID4_FLAG_CONFIRMED_R
))
5374 clp
->cl_seqid
= res
.seqid
;
5376 kfree(clp
->cl_serverowner
);
5377 clp
->cl_serverowner
= res
.server_owner
;
5378 res
.server_owner
= NULL
;
5380 /* use the most recent implementation id */
5381 kfree(clp
->cl_implid
);
5382 clp
->cl_implid
= res
.impl_id
;
5384 if (clp
->cl_serverscope
!= NULL
&&
5385 !nfs41_same_server_scope(clp
->cl_serverscope
,
5386 res
.server_scope
)) {
5387 dprintk("%s: server_scope mismatch detected\n",
5389 set_bit(NFS4CLNT_SERVER_SCOPE_MISMATCH
, &clp
->cl_state
);
5390 kfree(clp
->cl_serverscope
);
5391 clp
->cl_serverscope
= NULL
;
5394 if (clp
->cl_serverscope
== NULL
) {
5395 clp
->cl_serverscope
= res
.server_scope
;
5402 kfree(res
.server_owner
);
5404 kfree(res
.server_scope
);
5406 if (clp
->cl_implid
!= NULL
)
5407 dprintk("NFS reply exchange_id: Server Implementation ID: "
5408 "domain: %s, name: %s, date: %llu,%u\n",
5409 clp
->cl_implid
->domain
, clp
->cl_implid
->name
,
5410 clp
->cl_implid
->date
.seconds
,
5411 clp
->cl_implid
->date
.nseconds
);
5412 dprintk("NFS reply exchange_id: %d\n", status
);
5416 static int _nfs4_proc_destroy_clientid(struct nfs_client
*clp
,
5417 struct rpc_cred
*cred
)
5419 struct rpc_message msg
= {
5420 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_DESTROY_CLIENTID
],
5426 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
5428 dprintk("NFS: Got error %d from the server %s on "
5429 "DESTROY_CLIENTID.", status
, clp
->cl_hostname
);
5433 static int nfs4_proc_destroy_clientid(struct nfs_client
*clp
,
5434 struct rpc_cred
*cred
)
5439 for (loop
= NFS4_MAX_LOOP_ON_RECOVER
; loop
!= 0; loop
--) {
5440 ret
= _nfs4_proc_destroy_clientid(clp
, cred
);
5442 case -NFS4ERR_DELAY
:
5443 case -NFS4ERR_CLIENTID_BUSY
:
5453 int nfs4_destroy_clientid(struct nfs_client
*clp
)
5455 struct rpc_cred
*cred
;
5458 if (clp
->cl_mvops
->minor_version
< 1)
5460 if (clp
->cl_exchange_flags
== 0)
5462 if (clp
->cl_preserve_clid
)
5464 cred
= nfs4_get_exchange_id_cred(clp
);
5465 ret
= nfs4_proc_destroy_clientid(clp
, cred
);
5470 case -NFS4ERR_STALE_CLIENTID
:
5471 clp
->cl_exchange_flags
= 0;
5477 struct nfs4_get_lease_time_data
{
5478 struct nfs4_get_lease_time_args
*args
;
5479 struct nfs4_get_lease_time_res
*res
;
5480 struct nfs_client
*clp
;
5483 static void nfs4_get_lease_time_prepare(struct rpc_task
*task
,
5486 struct nfs4_get_lease_time_data
*data
=
5487 (struct nfs4_get_lease_time_data
*)calldata
;
5489 dprintk("--> %s\n", __func__
);
5490 /* just setup sequence, do not trigger session recovery
5491 since we're invoked within one */
5492 nfs41_setup_sequence(data
->clp
->cl_session
,
5493 &data
->args
->la_seq_args
,
5494 &data
->res
->lr_seq_res
,
5496 dprintk("<-- %s\n", __func__
);
5500 * Called from nfs4_state_manager thread for session setup, so don't recover
5501 * from sequence operation or clientid errors.
5503 static void nfs4_get_lease_time_done(struct rpc_task
*task
, void *calldata
)
5505 struct nfs4_get_lease_time_data
*data
=
5506 (struct nfs4_get_lease_time_data
*)calldata
;
5508 dprintk("--> %s\n", __func__
);
5509 if (!nfs41_sequence_done(task
, &data
->res
->lr_seq_res
))
5511 switch (task
->tk_status
) {
5512 case -NFS4ERR_DELAY
:
5513 case -NFS4ERR_GRACE
:
5514 dprintk("%s Retry: tk_status %d\n", __func__
, task
->tk_status
);
5515 rpc_delay(task
, NFS4_POLL_RETRY_MIN
);
5516 task
->tk_status
= 0;
5518 case -NFS4ERR_RETRY_UNCACHED_REP
:
5519 rpc_restart_call_prepare(task
);
5522 dprintk("<-- %s\n", __func__
);
5525 static const struct rpc_call_ops nfs4_get_lease_time_ops
= {
5526 .rpc_call_prepare
= nfs4_get_lease_time_prepare
,
5527 .rpc_call_done
= nfs4_get_lease_time_done
,
5530 int nfs4_proc_get_lease_time(struct nfs_client
*clp
, struct nfs_fsinfo
*fsinfo
)
5532 struct rpc_task
*task
;
5533 struct nfs4_get_lease_time_args args
;
5534 struct nfs4_get_lease_time_res res
= {
5535 .lr_fsinfo
= fsinfo
,
5537 struct nfs4_get_lease_time_data data
= {
5542 struct rpc_message msg
= {
5543 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GET_LEASE_TIME
],
5547 struct rpc_task_setup task_setup
= {
5548 .rpc_client
= clp
->cl_rpcclient
,
5549 .rpc_message
= &msg
,
5550 .callback_ops
= &nfs4_get_lease_time_ops
,
5551 .callback_data
= &data
,
5552 .flags
= RPC_TASK_TIMEOUT
,
5556 nfs41_init_sequence(&args
.la_seq_args
, &res
.lr_seq_res
, 0);
5557 nfs4_set_sequence_privileged(&args
.la_seq_args
);
5558 dprintk("--> %s\n", __func__
);
5559 task
= rpc_run_task(&task_setup
);
5562 status
= PTR_ERR(task
);
5564 status
= task
->tk_status
;
5567 dprintk("<-- %s return %d\n", __func__
, status
);
5573 * Initialize the values to be used by the client in CREATE_SESSION
5574 * If nfs4_init_session set the fore channel request and response sizes,
5577 * Set the back channel max_resp_sz_cached to zero to force the client to
5578 * always set csa_cachethis to FALSE because the current implementation
5579 * of the back channel DRC only supports caching the CB_SEQUENCE operation.
5581 static void nfs4_init_channel_attrs(struct nfs41_create_session_args
*args
)
5583 struct nfs4_session
*session
= args
->client
->cl_session
;
5584 unsigned int mxrqst_sz
= session
->fc_target_max_rqst_sz
,
5585 mxresp_sz
= session
->fc_target_max_resp_sz
;
5588 mxrqst_sz
= NFS_MAX_FILE_IO_SIZE
;
5590 mxresp_sz
= NFS_MAX_FILE_IO_SIZE
;
5591 /* Fore channel attributes */
5592 args
->fc_attrs
.max_rqst_sz
= mxrqst_sz
;
5593 args
->fc_attrs
.max_resp_sz
= mxresp_sz
;
5594 args
->fc_attrs
.max_ops
= NFS4_MAX_OPS
;
5595 args
->fc_attrs
.max_reqs
= max_session_slots
;
5597 dprintk("%s: Fore Channel : max_rqst_sz=%u max_resp_sz=%u "
5598 "max_ops=%u max_reqs=%u\n",
5600 args
->fc_attrs
.max_rqst_sz
, args
->fc_attrs
.max_resp_sz
,
5601 args
->fc_attrs
.max_ops
, args
->fc_attrs
.max_reqs
);
5603 /* Back channel attributes */
5604 args
->bc_attrs
.max_rqst_sz
= PAGE_SIZE
;
5605 args
->bc_attrs
.max_resp_sz
= PAGE_SIZE
;
5606 args
->bc_attrs
.max_resp_sz_cached
= 0;
5607 args
->bc_attrs
.max_ops
= NFS4_MAX_BACK_CHANNEL_OPS
;
5608 args
->bc_attrs
.max_reqs
= 1;
5610 dprintk("%s: Back Channel : max_rqst_sz=%u max_resp_sz=%u "
5611 "max_resp_sz_cached=%u max_ops=%u max_reqs=%u\n",
5613 args
->bc_attrs
.max_rqst_sz
, args
->bc_attrs
.max_resp_sz
,
5614 args
->bc_attrs
.max_resp_sz_cached
, args
->bc_attrs
.max_ops
,
5615 args
->bc_attrs
.max_reqs
);
5618 static int nfs4_verify_fore_channel_attrs(struct nfs41_create_session_args
*args
, struct nfs4_session
*session
)
5620 struct nfs4_channel_attrs
*sent
= &args
->fc_attrs
;
5621 struct nfs4_channel_attrs
*rcvd
= &session
->fc_attrs
;
5623 if (rcvd
->max_resp_sz
> sent
->max_resp_sz
)
5626 * Our requested max_ops is the minimum we need; we're not
5627 * prepared to break up compounds into smaller pieces than that.
5628 * So, no point even trying to continue if the server won't
5631 if (rcvd
->max_ops
< sent
->max_ops
)
5633 if (rcvd
->max_reqs
== 0)
5635 if (rcvd
->max_reqs
> NFS4_MAX_SLOT_TABLE
)
5636 rcvd
->max_reqs
= NFS4_MAX_SLOT_TABLE
;
5640 static int nfs4_verify_back_channel_attrs(struct nfs41_create_session_args
*args
, struct nfs4_session
*session
)
5642 struct nfs4_channel_attrs
*sent
= &args
->bc_attrs
;
5643 struct nfs4_channel_attrs
*rcvd
= &session
->bc_attrs
;
5645 if (rcvd
->max_rqst_sz
> sent
->max_rqst_sz
)
5647 if (rcvd
->max_resp_sz
< sent
->max_resp_sz
)
5649 if (rcvd
->max_resp_sz_cached
> sent
->max_resp_sz_cached
)
5651 /* These would render the backchannel useless: */
5652 if (rcvd
->max_ops
!= sent
->max_ops
)
5654 if (rcvd
->max_reqs
!= sent
->max_reqs
)
5659 static int nfs4_verify_channel_attrs(struct nfs41_create_session_args
*args
,
5660 struct nfs4_session
*session
)
5664 ret
= nfs4_verify_fore_channel_attrs(args
, session
);
5667 return nfs4_verify_back_channel_attrs(args
, session
);
5670 static int _nfs4_proc_create_session(struct nfs_client
*clp
,
5671 struct rpc_cred
*cred
)
5673 struct nfs4_session
*session
= clp
->cl_session
;
5674 struct nfs41_create_session_args args
= {
5676 .cb_program
= NFS4_CALLBACK
,
5678 struct nfs41_create_session_res res
= {
5681 struct rpc_message msg
= {
5682 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_CREATE_SESSION
],
5689 nfs4_init_channel_attrs(&args
);
5690 args
.flags
= (SESSION4_PERSIST
| SESSION4_BACK_CHAN
);
5692 status
= rpc_call_sync(session
->clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
5695 /* Verify the session's negotiated channel_attrs values */
5696 status
= nfs4_verify_channel_attrs(&args
, session
);
5697 /* Increment the clientid slot sequence id */
5705 * Issues a CREATE_SESSION operation to the server.
5706 * It is the responsibility of the caller to verify the session is
5707 * expired before calling this routine.
5709 int nfs4_proc_create_session(struct nfs_client
*clp
, struct rpc_cred
*cred
)
5713 struct nfs4_session
*session
= clp
->cl_session
;
5715 dprintk("--> %s clp=%p session=%p\n", __func__
, clp
, session
);
5717 status
= _nfs4_proc_create_session(clp
, cred
);
5721 /* Init or reset the session slot tables */
5722 status
= nfs4_setup_session_slot_tables(session
);
5723 dprintk("slot table setup returned %d\n", status
);
5727 ptr
= (unsigned *)&session
->sess_id
.data
[0];
5728 dprintk("%s client>seqid %d sessionid %u:%u:%u:%u\n", __func__
,
5729 clp
->cl_seqid
, ptr
[0], ptr
[1], ptr
[2], ptr
[3]);
5731 dprintk("<-- %s\n", __func__
);
5736 * Issue the over-the-wire RPC DESTROY_SESSION.
5737 * The caller must serialize access to this routine.
5739 int nfs4_proc_destroy_session(struct nfs4_session
*session
,
5740 struct rpc_cred
*cred
)
5742 struct rpc_message msg
= {
5743 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_DESTROY_SESSION
],
5744 .rpc_argp
= session
,
5749 dprintk("--> nfs4_proc_destroy_session\n");
5751 /* session is still being setup */
5752 if (session
->clp
->cl_cons_state
!= NFS_CS_READY
)
5755 status
= rpc_call_sync(session
->clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
5758 dprintk("NFS: Got error %d from the server on DESTROY_SESSION. "
5759 "Session has been destroyed regardless...\n", status
);
5761 dprintk("<-- nfs4_proc_destroy_session\n");
5766 * Renew the cl_session lease.
5768 struct nfs4_sequence_data
{
5769 struct nfs_client
*clp
;
5770 struct nfs4_sequence_args args
;
5771 struct nfs4_sequence_res res
;
5774 static void nfs41_sequence_release(void *data
)
5776 struct nfs4_sequence_data
*calldata
= data
;
5777 struct nfs_client
*clp
= calldata
->clp
;
5779 if (atomic_read(&clp
->cl_count
) > 1)
5780 nfs4_schedule_state_renewal(clp
);
5781 nfs_put_client(clp
);
5785 static int nfs41_sequence_handle_errors(struct rpc_task
*task
, struct nfs_client
*clp
)
5787 switch(task
->tk_status
) {
5788 case -NFS4ERR_DELAY
:
5789 rpc_delay(task
, NFS4_POLL_RETRY_MAX
);
5792 nfs4_schedule_lease_recovery(clp
);
5797 static void nfs41_sequence_call_done(struct rpc_task
*task
, void *data
)
5799 struct nfs4_sequence_data
*calldata
= data
;
5800 struct nfs_client
*clp
= calldata
->clp
;
5802 if (!nfs41_sequence_done(task
, task
->tk_msg
.rpc_resp
))
5805 if (task
->tk_status
< 0) {
5806 dprintk("%s ERROR %d\n", __func__
, task
->tk_status
);
5807 if (atomic_read(&clp
->cl_count
) == 1)
5810 if (nfs41_sequence_handle_errors(task
, clp
) == -EAGAIN
) {
5811 rpc_restart_call_prepare(task
);
5815 dprintk("%s rpc_cred %p\n", __func__
, task
->tk_msg
.rpc_cred
);
5817 dprintk("<-- %s\n", __func__
);
5820 static void nfs41_sequence_prepare(struct rpc_task
*task
, void *data
)
5822 struct nfs4_sequence_data
*calldata
= data
;
5823 struct nfs_client
*clp
= calldata
->clp
;
5824 struct nfs4_sequence_args
*args
;
5825 struct nfs4_sequence_res
*res
;
5827 args
= task
->tk_msg
.rpc_argp
;
5828 res
= task
->tk_msg
.rpc_resp
;
5830 nfs41_setup_sequence(clp
->cl_session
, args
, res
, task
);
5833 static const struct rpc_call_ops nfs41_sequence_ops
= {
5834 .rpc_call_done
= nfs41_sequence_call_done
,
5835 .rpc_call_prepare
= nfs41_sequence_prepare
,
5836 .rpc_release
= nfs41_sequence_release
,
5839 static struct rpc_task
*_nfs41_proc_sequence(struct nfs_client
*clp
,
5840 struct rpc_cred
*cred
,
5843 struct nfs4_sequence_data
*calldata
;
5844 struct rpc_message msg
= {
5845 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SEQUENCE
],
5848 struct rpc_task_setup task_setup_data
= {
5849 .rpc_client
= clp
->cl_rpcclient
,
5850 .rpc_message
= &msg
,
5851 .callback_ops
= &nfs41_sequence_ops
,
5852 .flags
= RPC_TASK_ASYNC
| RPC_TASK_SOFT
,
5855 if (!atomic_inc_not_zero(&clp
->cl_count
))
5856 return ERR_PTR(-EIO
);
5857 calldata
= kzalloc(sizeof(*calldata
), GFP_NOFS
);
5858 if (calldata
== NULL
) {
5859 nfs_put_client(clp
);
5860 return ERR_PTR(-ENOMEM
);
5862 nfs41_init_sequence(&calldata
->args
, &calldata
->res
, 0);
5864 nfs4_set_sequence_privileged(&calldata
->args
);
5865 msg
.rpc_argp
= &calldata
->args
;
5866 msg
.rpc_resp
= &calldata
->res
;
5867 calldata
->clp
= clp
;
5868 task_setup_data
.callback_data
= calldata
;
5870 return rpc_run_task(&task_setup_data
);
5873 static int nfs41_proc_async_sequence(struct nfs_client
*clp
, struct rpc_cred
*cred
, unsigned renew_flags
)
5875 struct rpc_task
*task
;
5878 if ((renew_flags
& NFS4_RENEW_TIMEOUT
) == 0)
5880 task
= _nfs41_proc_sequence(clp
, cred
, false);
5882 ret
= PTR_ERR(task
);
5884 rpc_put_task_async(task
);
5885 dprintk("<-- %s status=%d\n", __func__
, ret
);
5889 static int nfs4_proc_sequence(struct nfs_client
*clp
, struct rpc_cred
*cred
)
5891 struct rpc_task
*task
;
5894 task
= _nfs41_proc_sequence(clp
, cred
, true);
5896 ret
= PTR_ERR(task
);
5899 ret
= rpc_wait_for_completion_task(task
);
5901 struct nfs4_sequence_res
*res
= task
->tk_msg
.rpc_resp
;
5903 if (task
->tk_status
== 0)
5904 nfs41_handle_sequence_flag_errors(clp
, res
->sr_status_flags
);
5905 ret
= task
->tk_status
;
5909 dprintk("<-- %s status=%d\n", __func__
, ret
);
5913 struct nfs4_reclaim_complete_data
{
5914 struct nfs_client
*clp
;
5915 struct nfs41_reclaim_complete_args arg
;
5916 struct nfs41_reclaim_complete_res res
;
5919 static void nfs4_reclaim_complete_prepare(struct rpc_task
*task
, void *data
)
5921 struct nfs4_reclaim_complete_data
*calldata
= data
;
5923 nfs41_setup_sequence(calldata
->clp
->cl_session
,
5924 &calldata
->arg
.seq_args
,
5925 &calldata
->res
.seq_res
,
5929 static int nfs41_reclaim_complete_handle_errors(struct rpc_task
*task
, struct nfs_client
*clp
)
5931 switch(task
->tk_status
) {
5933 case -NFS4ERR_COMPLETE_ALREADY
:
5934 case -NFS4ERR_WRONG_CRED
: /* What to do here? */
5936 case -NFS4ERR_DELAY
:
5937 rpc_delay(task
, NFS4_POLL_RETRY_MAX
);
5939 case -NFS4ERR_RETRY_UNCACHED_REP
:
5942 nfs4_schedule_lease_recovery(clp
);
5947 static void nfs4_reclaim_complete_done(struct rpc_task
*task
, void *data
)
5949 struct nfs4_reclaim_complete_data
*calldata
= data
;
5950 struct nfs_client
*clp
= calldata
->clp
;
5951 struct nfs4_sequence_res
*res
= &calldata
->res
.seq_res
;
5953 dprintk("--> %s\n", __func__
);
5954 if (!nfs41_sequence_done(task
, res
))
5957 if (nfs41_reclaim_complete_handle_errors(task
, clp
) == -EAGAIN
) {
5958 rpc_restart_call_prepare(task
);
5961 dprintk("<-- %s\n", __func__
);
5964 static void nfs4_free_reclaim_complete_data(void *data
)
5966 struct nfs4_reclaim_complete_data
*calldata
= data
;
5971 static const struct rpc_call_ops nfs4_reclaim_complete_call_ops
= {
5972 .rpc_call_prepare
= nfs4_reclaim_complete_prepare
,
5973 .rpc_call_done
= nfs4_reclaim_complete_done
,
5974 .rpc_release
= nfs4_free_reclaim_complete_data
,
5978 * Issue a global reclaim complete.
5980 static int nfs41_proc_reclaim_complete(struct nfs_client
*clp
)
5982 struct nfs4_reclaim_complete_data
*calldata
;
5983 struct rpc_task
*task
;
5984 struct rpc_message msg
= {
5985 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RECLAIM_COMPLETE
],
5987 struct rpc_task_setup task_setup_data
= {
5988 .rpc_client
= clp
->cl_rpcclient
,
5989 .rpc_message
= &msg
,
5990 .callback_ops
= &nfs4_reclaim_complete_call_ops
,
5991 .flags
= RPC_TASK_ASYNC
,
5993 int status
= -ENOMEM
;
5995 dprintk("--> %s\n", __func__
);
5996 calldata
= kzalloc(sizeof(*calldata
), GFP_NOFS
);
5997 if (calldata
== NULL
)
5999 calldata
->clp
= clp
;
6000 calldata
->arg
.one_fs
= 0;
6002 nfs41_init_sequence(&calldata
->arg
.seq_args
, &calldata
->res
.seq_res
, 0);
6003 nfs4_set_sequence_privileged(&calldata
->arg
.seq_args
);
6004 msg
.rpc_argp
= &calldata
->arg
;
6005 msg
.rpc_resp
= &calldata
->res
;
6006 task_setup_data
.callback_data
= calldata
;
6007 task
= rpc_run_task(&task_setup_data
);
6009 status
= PTR_ERR(task
);
6012 status
= nfs4_wait_for_completion_rpc_task(task
);
6014 status
= task
->tk_status
;
6018 dprintk("<-- %s status=%d\n", __func__
, status
);
6023 nfs4_layoutget_prepare(struct rpc_task
*task
, void *calldata
)
6025 struct nfs4_layoutget
*lgp
= calldata
;
6026 struct nfs_server
*server
= NFS_SERVER(lgp
->args
.inode
);
6027 struct nfs4_session
*session
= nfs4_get_session(server
);
6029 dprintk("--> %s\n", __func__
);
6030 /* Note the is a race here, where a CB_LAYOUTRECALL can come in
6031 * right now covering the LAYOUTGET we are about to send.
6032 * However, that is not so catastrophic, and there seems
6033 * to be no way to prevent it completely.
6035 if (nfs41_setup_sequence(session
, &lgp
->args
.seq_args
,
6036 &lgp
->res
.seq_res
, task
))
6038 if (pnfs_choose_layoutget_stateid(&lgp
->args
.stateid
,
6039 NFS_I(lgp
->args
.inode
)->layout
,
6040 lgp
->args
.ctx
->state
)) {
6041 rpc_exit(task
, NFS4_OK
);
6045 static void nfs4_layoutget_done(struct rpc_task
*task
, void *calldata
)
6047 struct nfs4_layoutget
*lgp
= calldata
;
6048 struct inode
*inode
= lgp
->args
.inode
;
6049 struct nfs_server
*server
= NFS_SERVER(inode
);
6050 struct pnfs_layout_hdr
*lo
;
6051 struct nfs4_state
*state
= NULL
;
6052 unsigned long timeo
, giveup
;
6054 dprintk("--> %s\n", __func__
);
6056 if (!nfs41_sequence_done(task
, &lgp
->res
.seq_res
))
6059 switch (task
->tk_status
) {
6062 case -NFS4ERR_LAYOUTTRYLATER
:
6063 case -NFS4ERR_RECALLCONFLICT
:
6064 timeo
= rpc_get_timeout(task
->tk_client
);
6065 giveup
= lgp
->args
.timestamp
+ timeo
;
6066 if (time_after(giveup
, jiffies
))
6067 task
->tk_status
= -NFS4ERR_DELAY
;
6069 case -NFS4ERR_EXPIRED
:
6070 case -NFS4ERR_BAD_STATEID
:
6071 spin_lock(&inode
->i_lock
);
6072 lo
= NFS_I(inode
)->layout
;
6073 if (!lo
|| list_empty(&lo
->plh_segs
)) {
6074 spin_unlock(&inode
->i_lock
);
6075 /* If the open stateid was bad, then recover it. */
6076 state
= lgp
->args
.ctx
->state
;
6080 pnfs_mark_matching_lsegs_invalid(lo
, &head
, NULL
);
6081 spin_unlock(&inode
->i_lock
);
6082 /* Mark the bad layout state as invalid, then
6083 * retry using the open stateid. */
6084 pnfs_free_lseg_list(&head
);
6087 if (nfs4_async_handle_error(task
, server
, state
) == -EAGAIN
)
6088 rpc_restart_call_prepare(task
);
6090 dprintk("<-- %s\n", __func__
);
6093 static size_t max_response_pages(struct nfs_server
*server
)
6095 u32 max_resp_sz
= server
->nfs_client
->cl_session
->fc_attrs
.max_resp_sz
;
6096 return nfs_page_array_len(0, max_resp_sz
);
6099 static void nfs4_free_pages(struct page
**pages
, size_t size
)
6106 for (i
= 0; i
< size
; i
++) {
6109 __free_page(pages
[i
]);
6114 static struct page
**nfs4_alloc_pages(size_t size
, gfp_t gfp_flags
)
6116 struct page
**pages
;
6119 pages
= kcalloc(size
, sizeof(struct page
*), gfp_flags
);
6121 dprintk("%s: can't alloc array of %zu pages\n", __func__
, size
);
6125 for (i
= 0; i
< size
; i
++) {
6126 pages
[i
] = alloc_page(gfp_flags
);
6128 dprintk("%s: failed to allocate page\n", __func__
);
6129 nfs4_free_pages(pages
, size
);
6137 static void nfs4_layoutget_release(void *calldata
)
6139 struct nfs4_layoutget
*lgp
= calldata
;
6140 struct inode
*inode
= lgp
->args
.inode
;
6141 struct nfs_server
*server
= NFS_SERVER(inode
);
6142 size_t max_pages
= max_response_pages(server
);
6144 dprintk("--> %s\n", __func__
);
6145 nfs4_free_pages(lgp
->args
.layout
.pages
, max_pages
);
6146 pnfs_put_layout_hdr(NFS_I(inode
)->layout
);
6147 put_nfs_open_context(lgp
->args
.ctx
);
6149 dprintk("<-- %s\n", __func__
);
6152 static const struct rpc_call_ops nfs4_layoutget_call_ops
= {
6153 .rpc_call_prepare
= nfs4_layoutget_prepare
,
6154 .rpc_call_done
= nfs4_layoutget_done
,
6155 .rpc_release
= nfs4_layoutget_release
,
6158 struct pnfs_layout_segment
*
6159 nfs4_proc_layoutget(struct nfs4_layoutget
*lgp
, gfp_t gfp_flags
)
6161 struct inode
*inode
= lgp
->args
.inode
;
6162 struct nfs_server
*server
= NFS_SERVER(inode
);
6163 size_t max_pages
= max_response_pages(server
);
6164 struct rpc_task
*task
;
6165 struct rpc_message msg
= {
6166 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LAYOUTGET
],
6167 .rpc_argp
= &lgp
->args
,
6168 .rpc_resp
= &lgp
->res
,
6170 struct rpc_task_setup task_setup_data
= {
6171 .rpc_client
= server
->client
,
6172 .rpc_message
= &msg
,
6173 .callback_ops
= &nfs4_layoutget_call_ops
,
6174 .callback_data
= lgp
,
6175 .flags
= RPC_TASK_ASYNC
,
6177 struct pnfs_layout_segment
*lseg
= NULL
;
6180 dprintk("--> %s\n", __func__
);
6182 lgp
->args
.layout
.pages
= nfs4_alloc_pages(max_pages
, gfp_flags
);
6183 if (!lgp
->args
.layout
.pages
) {
6184 nfs4_layoutget_release(lgp
);
6185 return ERR_PTR(-ENOMEM
);
6187 lgp
->args
.layout
.pglen
= max_pages
* PAGE_SIZE
;
6188 lgp
->args
.timestamp
= jiffies
;
6190 lgp
->res
.layoutp
= &lgp
->args
.layout
;
6191 lgp
->res
.seq_res
.sr_slot
= NULL
;
6192 nfs41_init_sequence(&lgp
->args
.seq_args
, &lgp
->res
.seq_res
, 0);
6194 /* nfs4_layoutget_release calls pnfs_put_layout_hdr */
6195 pnfs_get_layout_hdr(NFS_I(inode
)->layout
);
6197 task
= rpc_run_task(&task_setup_data
);
6199 return ERR_CAST(task
);
6200 status
= nfs4_wait_for_completion_rpc_task(task
);
6202 status
= task
->tk_status
;
6203 /* if layoutp->len is 0, nfs4_layoutget_prepare called rpc_exit */
6204 if (status
== 0 && lgp
->res
.layoutp
->len
)
6205 lseg
= pnfs_layout_process(lgp
);
6207 dprintk("<-- %s status=%d\n", __func__
, status
);
6209 return ERR_PTR(status
);
6214 nfs4_layoutreturn_prepare(struct rpc_task
*task
, void *calldata
)
6216 struct nfs4_layoutreturn
*lrp
= calldata
;
6218 dprintk("--> %s\n", __func__
);
6219 nfs41_setup_sequence(lrp
->clp
->cl_session
,
6220 &lrp
->args
.seq_args
,
6225 static void nfs4_layoutreturn_done(struct rpc_task
*task
, void *calldata
)
6227 struct nfs4_layoutreturn
*lrp
= calldata
;
6228 struct nfs_server
*server
;
6230 dprintk("--> %s\n", __func__
);
6232 if (!nfs41_sequence_done(task
, &lrp
->res
.seq_res
))
6235 server
= NFS_SERVER(lrp
->args
.inode
);
6236 if (nfs4_async_handle_error(task
, server
, NULL
) == -EAGAIN
) {
6237 rpc_restart_call_prepare(task
);
6240 dprintk("<-- %s\n", __func__
);
6243 static void nfs4_layoutreturn_release(void *calldata
)
6245 struct nfs4_layoutreturn
*lrp
= calldata
;
6246 struct pnfs_layout_hdr
*lo
= lrp
->args
.layout
;
6248 dprintk("--> %s\n", __func__
);
6249 spin_lock(&lo
->plh_inode
->i_lock
);
6250 if (lrp
->res
.lrs_present
)
6251 pnfs_set_layout_stateid(lo
, &lrp
->res
.stateid
, true);
6252 lo
->plh_block_lgets
--;
6253 spin_unlock(&lo
->plh_inode
->i_lock
);
6254 pnfs_put_layout_hdr(lrp
->args
.layout
);
6256 dprintk("<-- %s\n", __func__
);
6259 static const struct rpc_call_ops nfs4_layoutreturn_call_ops
= {
6260 .rpc_call_prepare
= nfs4_layoutreturn_prepare
,
6261 .rpc_call_done
= nfs4_layoutreturn_done
,
6262 .rpc_release
= nfs4_layoutreturn_release
,
6265 int nfs4_proc_layoutreturn(struct nfs4_layoutreturn
*lrp
)
6267 struct rpc_task
*task
;
6268 struct rpc_message msg
= {
6269 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LAYOUTRETURN
],
6270 .rpc_argp
= &lrp
->args
,
6271 .rpc_resp
= &lrp
->res
,
6273 struct rpc_task_setup task_setup_data
= {
6274 .rpc_client
= lrp
->clp
->cl_rpcclient
,
6275 .rpc_message
= &msg
,
6276 .callback_ops
= &nfs4_layoutreturn_call_ops
,
6277 .callback_data
= lrp
,
6281 dprintk("--> %s\n", __func__
);
6282 nfs41_init_sequence(&lrp
->args
.seq_args
, &lrp
->res
.seq_res
, 1);
6283 task
= rpc_run_task(&task_setup_data
);
6285 return PTR_ERR(task
);
6286 status
= task
->tk_status
;
6287 dprintk("<-- %s status=%d\n", __func__
, status
);
6293 * Retrieve the list of Data Server devices from the MDS.
6295 static int _nfs4_getdevicelist(struct nfs_server
*server
,
6296 const struct nfs_fh
*fh
,
6297 struct pnfs_devicelist
*devlist
)
6299 struct nfs4_getdevicelist_args args
= {
6301 .layoutclass
= server
->pnfs_curr_ld
->id
,
6303 struct nfs4_getdevicelist_res res
= {
6306 struct rpc_message msg
= {
6307 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GETDEVICELIST
],
6313 dprintk("--> %s\n", __func__
);
6314 status
= nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
,
6316 dprintk("<-- %s status=%d\n", __func__
, status
);
6320 int nfs4_proc_getdevicelist(struct nfs_server
*server
,
6321 const struct nfs_fh
*fh
,
6322 struct pnfs_devicelist
*devlist
)
6324 struct nfs4_exception exception
= { };
6328 err
= nfs4_handle_exception(server
,
6329 _nfs4_getdevicelist(server
, fh
, devlist
),
6331 } while (exception
.retry
);
6333 dprintk("%s: err=%d, num_devs=%u\n", __func__
,
6334 err
, devlist
->num_devs
);
6338 EXPORT_SYMBOL_GPL(nfs4_proc_getdevicelist
);
6341 _nfs4_proc_getdeviceinfo(struct nfs_server
*server
, struct pnfs_device
*pdev
)
6343 struct nfs4_getdeviceinfo_args args
= {
6346 struct nfs4_getdeviceinfo_res res
= {
6349 struct rpc_message msg
= {
6350 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GETDEVICEINFO
],
6356 dprintk("--> %s\n", __func__
);
6357 status
= nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
6358 dprintk("<-- %s status=%d\n", __func__
, status
);
6363 int nfs4_proc_getdeviceinfo(struct nfs_server
*server
, struct pnfs_device
*pdev
)
6365 struct nfs4_exception exception
= { };
6369 err
= nfs4_handle_exception(server
,
6370 _nfs4_proc_getdeviceinfo(server
, pdev
),
6372 } while (exception
.retry
);
6375 EXPORT_SYMBOL_GPL(nfs4_proc_getdeviceinfo
);
6377 static void nfs4_layoutcommit_prepare(struct rpc_task
*task
, void *calldata
)
6379 struct nfs4_layoutcommit_data
*data
= calldata
;
6380 struct nfs_server
*server
= NFS_SERVER(data
->args
.inode
);
6381 struct nfs4_session
*session
= nfs4_get_session(server
);
6383 nfs41_setup_sequence(session
,
6384 &data
->args
.seq_args
,
6390 nfs4_layoutcommit_done(struct rpc_task
*task
, void *calldata
)
6392 struct nfs4_layoutcommit_data
*data
= calldata
;
6393 struct nfs_server
*server
= NFS_SERVER(data
->args
.inode
);
6395 if (!nfs41_sequence_done(task
, &data
->res
.seq_res
))
6398 switch (task
->tk_status
) { /* Just ignore these failures */
6399 case -NFS4ERR_DELEG_REVOKED
: /* layout was recalled */
6400 case -NFS4ERR_BADIOMODE
: /* no IOMODE_RW layout for range */
6401 case -NFS4ERR_BADLAYOUT
: /* no layout */
6402 case -NFS4ERR_GRACE
: /* loca_recalim always false */
6403 task
->tk_status
= 0;
6406 nfs_post_op_update_inode_force_wcc(data
->args
.inode
,
6410 if (nfs4_async_handle_error(task
, server
, NULL
) == -EAGAIN
) {
6411 rpc_restart_call_prepare(task
);
6417 static void nfs4_layoutcommit_release(void *calldata
)
6419 struct nfs4_layoutcommit_data
*data
= calldata
;
6421 pnfs_cleanup_layoutcommit(data
);
6422 put_rpccred(data
->cred
);
6426 static const struct rpc_call_ops nfs4_layoutcommit_ops
= {
6427 .rpc_call_prepare
= nfs4_layoutcommit_prepare
,
6428 .rpc_call_done
= nfs4_layoutcommit_done
,
6429 .rpc_release
= nfs4_layoutcommit_release
,
6433 nfs4_proc_layoutcommit(struct nfs4_layoutcommit_data
*data
, bool sync
)
6435 struct rpc_message msg
= {
6436 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LAYOUTCOMMIT
],
6437 .rpc_argp
= &data
->args
,
6438 .rpc_resp
= &data
->res
,
6439 .rpc_cred
= data
->cred
,
6441 struct rpc_task_setup task_setup_data
= {
6442 .task
= &data
->task
,
6443 .rpc_client
= NFS_CLIENT(data
->args
.inode
),
6444 .rpc_message
= &msg
,
6445 .callback_ops
= &nfs4_layoutcommit_ops
,
6446 .callback_data
= data
,
6447 .flags
= RPC_TASK_ASYNC
,
6449 struct rpc_task
*task
;
6452 dprintk("NFS: %4d initiating layoutcommit call. sync %d "
6453 "lbw: %llu inode %lu\n",
6454 data
->task
.tk_pid
, sync
,
6455 data
->args
.lastbytewritten
,
6456 data
->args
.inode
->i_ino
);
6458 nfs41_init_sequence(&data
->args
.seq_args
, &data
->res
.seq_res
, 1);
6459 task
= rpc_run_task(&task_setup_data
);
6461 return PTR_ERR(task
);
6464 status
= nfs4_wait_for_completion_rpc_task(task
);
6467 status
= task
->tk_status
;
6469 dprintk("%s: status %d\n", __func__
, status
);
6475 _nfs41_proc_secinfo_no_name(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
6476 struct nfs_fsinfo
*info
, struct nfs4_secinfo_flavors
*flavors
)
6478 struct nfs41_secinfo_no_name_args args
= {
6479 .style
= SECINFO_STYLE_CURRENT_FH
,
6481 struct nfs4_secinfo_res res
= {
6484 struct rpc_message msg
= {
6485 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SECINFO_NO_NAME
],
6489 return nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
6493 nfs41_proc_secinfo_no_name(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
6494 struct nfs_fsinfo
*info
, struct nfs4_secinfo_flavors
*flavors
)
6496 struct nfs4_exception exception
= { };
6499 err
= _nfs41_proc_secinfo_no_name(server
, fhandle
, info
, flavors
);
6502 case -NFS4ERR_WRONGSEC
:
6503 case -NFS4ERR_NOTSUPP
:
6506 err
= nfs4_handle_exception(server
, err
, &exception
);
6508 } while (exception
.retry
);
6514 nfs41_find_root_sec(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
6515 struct nfs_fsinfo
*info
)
6519 rpc_authflavor_t flavor
;
6520 struct nfs4_secinfo_flavors
*flavors
;
6522 page
= alloc_page(GFP_KERNEL
);
6528 flavors
= page_address(page
);
6529 err
= nfs41_proc_secinfo_no_name(server
, fhandle
, info
, flavors
);
6532 * Fall back on "guess and check" method if
6533 * the server doesn't support SECINFO_NO_NAME
6535 if (err
== -NFS4ERR_WRONGSEC
|| err
== -NFS4ERR_NOTSUPP
) {
6536 err
= nfs4_find_root_sec(server
, fhandle
, info
);
6542 flavor
= nfs_find_best_sec(flavors
);
6544 err
= nfs4_lookup_root_sec(server
, fhandle
, info
, flavor
);
6554 static int _nfs41_test_stateid(struct nfs_server
*server
, nfs4_stateid
*stateid
)
6557 struct nfs41_test_stateid_args args
= {
6560 struct nfs41_test_stateid_res res
;
6561 struct rpc_message msg
= {
6562 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_TEST_STATEID
],
6567 dprintk("NFS call test_stateid %p\n", stateid
);
6568 nfs41_init_sequence(&args
.seq_args
, &res
.seq_res
, 0);
6569 nfs4_set_sequence_privileged(&args
.seq_args
);
6570 status
= nfs4_call_sync_sequence(server
->client
, server
, &msg
,
6571 &args
.seq_args
, &res
.seq_res
);
6572 if (status
!= NFS_OK
) {
6573 dprintk("NFS reply test_stateid: failed, %d\n", status
);
6576 dprintk("NFS reply test_stateid: succeeded, %d\n", -res
.status
);
6581 * nfs41_test_stateid - perform a TEST_STATEID operation
6583 * @server: server / transport on which to perform the operation
6584 * @stateid: state ID to test
6586 * Returns NFS_OK if the server recognizes that "stateid" is valid.
6587 * Otherwise a negative NFS4ERR value is returned if the operation
6588 * failed or the state ID is not currently valid.
6590 static int nfs41_test_stateid(struct nfs_server
*server
, nfs4_stateid
*stateid
)
6592 struct nfs4_exception exception
= { };
6595 err
= _nfs41_test_stateid(server
, stateid
);
6596 if (err
!= -NFS4ERR_DELAY
)
6598 nfs4_handle_exception(server
, err
, &exception
);
6599 } while (exception
.retry
);
6603 static int _nfs4_free_stateid(struct nfs_server
*server
, nfs4_stateid
*stateid
)
6605 struct nfs41_free_stateid_args args
= {
6608 struct nfs41_free_stateid_res res
;
6609 struct rpc_message msg
= {
6610 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_FREE_STATEID
],
6616 dprintk("NFS call free_stateid %p\n", stateid
);
6617 nfs41_init_sequence(&args
.seq_args
, &res
.seq_res
, 0);
6618 nfs4_set_sequence_privileged(&args
.seq_args
);
6619 status
= nfs4_call_sync_sequence(server
->client
, server
, &msg
,
6620 &args
.seq_args
, &res
.seq_res
);
6621 dprintk("NFS reply free_stateid: %d\n", status
);
6626 * nfs41_free_stateid - perform a FREE_STATEID operation
6628 * @server: server / transport on which to perform the operation
6629 * @stateid: state ID to release
6631 * Returns NFS_OK if the server freed "stateid". Otherwise a
6632 * negative NFS4ERR value is returned.
6634 static int nfs41_free_stateid(struct nfs_server
*server
, nfs4_stateid
*stateid
)
6636 struct nfs4_exception exception
= { };
6639 err
= _nfs4_free_stateid(server
, stateid
);
6640 if (err
!= -NFS4ERR_DELAY
)
6642 nfs4_handle_exception(server
, err
, &exception
);
6643 } while (exception
.retry
);
6647 static bool nfs41_match_stateid(const nfs4_stateid
*s1
,
6648 const nfs4_stateid
*s2
)
6650 if (memcmp(s1
->other
, s2
->other
, sizeof(s1
->other
)) != 0)
6653 if (s1
->seqid
== s2
->seqid
)
6655 if (s1
->seqid
== 0 || s2
->seqid
== 0)
6661 #endif /* CONFIG_NFS_V4_1 */
6663 static bool nfs4_match_stateid(const nfs4_stateid
*s1
,
6664 const nfs4_stateid
*s2
)
6666 return nfs4_stateid_match(s1
, s2
);
6670 static const struct nfs4_state_recovery_ops nfs40_reboot_recovery_ops
= {
6671 .owner_flag_bit
= NFS_OWNER_RECLAIM_REBOOT
,
6672 .state_flag_bit
= NFS_STATE_RECLAIM_REBOOT
,
6673 .recover_open
= nfs4_open_reclaim
,
6674 .recover_lock
= nfs4_lock_reclaim
,
6675 .establish_clid
= nfs4_init_clientid
,
6676 .get_clid_cred
= nfs4_get_setclientid_cred
,
6677 .detect_trunking
= nfs40_discover_server_trunking
,
6680 #if defined(CONFIG_NFS_V4_1)
6681 static const struct nfs4_state_recovery_ops nfs41_reboot_recovery_ops
= {
6682 .owner_flag_bit
= NFS_OWNER_RECLAIM_REBOOT
,
6683 .state_flag_bit
= NFS_STATE_RECLAIM_REBOOT
,
6684 .recover_open
= nfs4_open_reclaim
,
6685 .recover_lock
= nfs4_lock_reclaim
,
6686 .establish_clid
= nfs41_init_clientid
,
6687 .get_clid_cred
= nfs4_get_exchange_id_cred
,
6688 .reclaim_complete
= nfs41_proc_reclaim_complete
,
6689 .detect_trunking
= nfs41_discover_server_trunking
,
6691 #endif /* CONFIG_NFS_V4_1 */
6693 static const struct nfs4_state_recovery_ops nfs40_nograce_recovery_ops
= {
6694 .owner_flag_bit
= NFS_OWNER_RECLAIM_NOGRACE
,
6695 .state_flag_bit
= NFS_STATE_RECLAIM_NOGRACE
,
6696 .recover_open
= nfs4_open_expired
,
6697 .recover_lock
= nfs4_lock_expired
,
6698 .establish_clid
= nfs4_init_clientid
,
6699 .get_clid_cred
= nfs4_get_setclientid_cred
,
6702 #if defined(CONFIG_NFS_V4_1)
6703 static const struct nfs4_state_recovery_ops nfs41_nograce_recovery_ops
= {
6704 .owner_flag_bit
= NFS_OWNER_RECLAIM_NOGRACE
,
6705 .state_flag_bit
= NFS_STATE_RECLAIM_NOGRACE
,
6706 .recover_open
= nfs41_open_expired
,
6707 .recover_lock
= nfs41_lock_expired
,
6708 .establish_clid
= nfs41_init_clientid
,
6709 .get_clid_cred
= nfs4_get_exchange_id_cred
,
6711 #endif /* CONFIG_NFS_V4_1 */
6713 static const struct nfs4_state_maintenance_ops nfs40_state_renewal_ops
= {
6714 .sched_state_renewal
= nfs4_proc_async_renew
,
6715 .get_state_renewal_cred_locked
= nfs4_get_renew_cred_locked
,
6716 .renew_lease
= nfs4_proc_renew
,
6719 #if defined(CONFIG_NFS_V4_1)
6720 static const struct nfs4_state_maintenance_ops nfs41_state_renewal_ops
= {
6721 .sched_state_renewal
= nfs41_proc_async_sequence
,
6722 .get_state_renewal_cred_locked
= nfs4_get_machine_cred_locked
,
6723 .renew_lease
= nfs4_proc_sequence
,
6727 static const struct nfs4_minor_version_ops nfs_v4_0_minor_ops
= {
6729 .call_sync
= _nfs4_call_sync
,
6730 .match_stateid
= nfs4_match_stateid
,
6731 .find_root_sec
= nfs4_find_root_sec
,
6732 .reboot_recovery_ops
= &nfs40_reboot_recovery_ops
,
6733 .nograce_recovery_ops
= &nfs40_nograce_recovery_ops
,
6734 .state_renewal_ops
= &nfs40_state_renewal_ops
,
6737 #if defined(CONFIG_NFS_V4_1)
6738 static const struct nfs4_minor_version_ops nfs_v4_1_minor_ops
= {
6740 .call_sync
= nfs4_call_sync_sequence
,
6741 .match_stateid
= nfs41_match_stateid
,
6742 .find_root_sec
= nfs41_find_root_sec
,
6743 .reboot_recovery_ops
= &nfs41_reboot_recovery_ops
,
6744 .nograce_recovery_ops
= &nfs41_nograce_recovery_ops
,
6745 .state_renewal_ops
= &nfs41_state_renewal_ops
,
6749 const struct nfs4_minor_version_ops
*nfs_v4_minor_ops
[] = {
6750 [0] = &nfs_v4_0_minor_ops
,
6751 #if defined(CONFIG_NFS_V4_1)
6752 [1] = &nfs_v4_1_minor_ops
,
6756 const struct inode_operations nfs4_dir_inode_operations
= {
6757 .create
= nfs_create
,
6758 .lookup
= nfs_lookup
,
6759 .atomic_open
= nfs_atomic_open
,
6761 .unlink
= nfs_unlink
,
6762 .symlink
= nfs_symlink
,
6766 .rename
= nfs_rename
,
6767 .permission
= nfs_permission
,
6768 .getattr
= nfs_getattr
,
6769 .setattr
= nfs_setattr
,
6770 .getxattr
= generic_getxattr
,
6771 .setxattr
= generic_setxattr
,
6772 .listxattr
= generic_listxattr
,
6773 .removexattr
= generic_removexattr
,
6776 static const struct inode_operations nfs4_file_inode_operations
= {
6777 .permission
= nfs_permission
,
6778 .getattr
= nfs_getattr
,
6779 .setattr
= nfs_setattr
,
6780 .getxattr
= generic_getxattr
,
6781 .setxattr
= generic_setxattr
,
6782 .listxattr
= generic_listxattr
,
6783 .removexattr
= generic_removexattr
,
6786 const struct nfs_rpc_ops nfs_v4_clientops
= {
6787 .version
= 4, /* protocol version */
6788 .dentry_ops
= &nfs4_dentry_operations
,
6789 .dir_inode_ops
= &nfs4_dir_inode_operations
,
6790 .file_inode_ops
= &nfs4_file_inode_operations
,
6791 .file_ops
= &nfs4_file_operations
,
6792 .getroot
= nfs4_proc_get_root
,
6793 .submount
= nfs4_submount
,
6794 .try_mount
= nfs4_try_mount
,
6795 .getattr
= nfs4_proc_getattr
,
6796 .setattr
= nfs4_proc_setattr
,
6797 .lookup
= nfs4_proc_lookup
,
6798 .access
= nfs4_proc_access
,
6799 .readlink
= nfs4_proc_readlink
,
6800 .create
= nfs4_proc_create
,
6801 .remove
= nfs4_proc_remove
,
6802 .unlink_setup
= nfs4_proc_unlink_setup
,
6803 .unlink_rpc_prepare
= nfs4_proc_unlink_rpc_prepare
,
6804 .unlink_done
= nfs4_proc_unlink_done
,
6805 .rename
= nfs4_proc_rename
,
6806 .rename_setup
= nfs4_proc_rename_setup
,
6807 .rename_rpc_prepare
= nfs4_proc_rename_rpc_prepare
,
6808 .rename_done
= nfs4_proc_rename_done
,
6809 .link
= nfs4_proc_link
,
6810 .symlink
= nfs4_proc_symlink
,
6811 .mkdir
= nfs4_proc_mkdir
,
6812 .rmdir
= nfs4_proc_remove
,
6813 .readdir
= nfs4_proc_readdir
,
6814 .mknod
= nfs4_proc_mknod
,
6815 .statfs
= nfs4_proc_statfs
,
6816 .fsinfo
= nfs4_proc_fsinfo
,
6817 .pathconf
= nfs4_proc_pathconf
,
6818 .set_capabilities
= nfs4_server_capabilities
,
6819 .decode_dirent
= nfs4_decode_dirent
,
6820 .read_setup
= nfs4_proc_read_setup
,
6821 .read_pageio_init
= pnfs_pageio_init_read
,
6822 .read_rpc_prepare
= nfs4_proc_read_rpc_prepare
,
6823 .read_done
= nfs4_read_done
,
6824 .write_setup
= nfs4_proc_write_setup
,
6825 .write_pageio_init
= pnfs_pageio_init_write
,
6826 .write_rpc_prepare
= nfs4_proc_write_rpc_prepare
,
6827 .write_done
= nfs4_write_done
,
6828 .commit_setup
= nfs4_proc_commit_setup
,
6829 .commit_rpc_prepare
= nfs4_proc_commit_rpc_prepare
,
6830 .commit_done
= nfs4_commit_done
,
6831 .lock
= nfs4_proc_lock
,
6832 .clear_acl_cache
= nfs4_zap_acl_attr
,
6833 .close_context
= nfs4_close_context
,
6834 .open_context
= nfs4_atomic_open
,
6835 .have_delegation
= nfs4_have_delegation
,
6836 .return_delegation
= nfs4_inode_return_delegation
,
6837 .alloc_client
= nfs4_alloc_client
,
6838 .init_client
= nfs4_init_client
,
6839 .free_client
= nfs4_free_client
,
6840 .create_server
= nfs4_create_server
,
6841 .clone_server
= nfs_clone_server
,
6844 static const struct xattr_handler nfs4_xattr_nfs4_acl_handler
= {
6845 .prefix
= XATTR_NAME_NFSV4_ACL
,
6846 .list
= nfs4_xattr_list_nfs4_acl
,
6847 .get
= nfs4_xattr_get_nfs4_acl
,
6848 .set
= nfs4_xattr_set_nfs4_acl
,
6851 const struct xattr_handler
*nfs4_xattr_handlers
[] = {
6852 &nfs4_xattr_nfs4_acl_handler
,