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 #include "nfs4trace.h"
71 #define NFSDBG_FACILITY NFSDBG_PROC
73 #define NFS4_POLL_RETRY_MIN (HZ/10)
74 #define NFS4_POLL_RETRY_MAX (15*HZ)
77 static int _nfs4_proc_open(struct nfs4_opendata
*data
);
78 static int _nfs4_recover_proc_open(struct nfs4_opendata
*data
);
79 static int nfs4_do_fsinfo(struct nfs_server
*, struct nfs_fh
*, struct nfs_fsinfo
*);
80 static int nfs4_async_handle_error(struct rpc_task
*, const struct nfs_server
*, struct nfs4_state
*);
81 static void nfs_fixup_referral_attributes(struct nfs_fattr
*fattr
);
82 static int nfs4_proc_getattr(struct nfs_server
*, struct nfs_fh
*, struct nfs_fattr
*, struct nfs4_label
*label
);
83 static int _nfs4_proc_getattr(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fattr
*fattr
, struct nfs4_label
*label
);
84 static int nfs4_do_setattr(struct inode
*inode
, struct rpc_cred
*cred
,
85 struct nfs_fattr
*fattr
, struct iattr
*sattr
,
86 struct nfs4_state
*state
, struct nfs4_label
*ilabel
,
87 struct nfs4_label
*olabel
);
88 #ifdef CONFIG_NFS_V4_1
89 static int nfs41_test_stateid(struct nfs_server
*, nfs4_stateid
*,
91 static int nfs41_free_stateid(struct nfs_server
*, nfs4_stateid
*,
95 #ifdef CONFIG_NFS_V4_SECURITY_LABEL
96 static inline struct nfs4_label
*
97 nfs4_label_init_security(struct inode
*dir
, struct dentry
*dentry
,
98 struct iattr
*sattr
, struct nfs4_label
*label
)
105 if (nfs_server_capable(dir
, NFS_CAP_SECURITY_LABEL
) == 0)
108 if (NFS_SERVER(dir
)->nfs_client
->cl_minorversion
< 2)
111 err
= security_dentry_init_security(dentry
, sattr
->ia_mode
,
112 &dentry
->d_name
, (void **)&label
->label
, &label
->len
);
119 nfs4_label_release_security(struct nfs4_label
*label
)
122 security_release_secctx(label
->label
, label
->len
);
124 static inline u32
*nfs4_bitmask(struct nfs_server
*server
, struct nfs4_label
*label
)
127 return server
->attr_bitmask
;
129 return server
->attr_bitmask_nl
;
132 static inline struct nfs4_label
*
133 nfs4_label_init_security(struct inode
*dir
, struct dentry
*dentry
,
134 struct iattr
*sattr
, struct nfs4_label
*l
)
137 nfs4_label_release_security(struct nfs4_label
*label
)
140 nfs4_bitmask(struct nfs_server
*server
, struct nfs4_label
*label
)
141 { return server
->attr_bitmask
; }
144 /* Prevent leaks of NFSv4 errors into userland */
145 static int nfs4_map_errors(int err
)
150 case -NFS4ERR_RESOURCE
:
151 case -NFS4ERR_LAYOUTTRYLATER
:
152 case -NFS4ERR_RECALLCONFLICT
:
154 case -NFS4ERR_WRONGSEC
:
156 case -NFS4ERR_BADOWNER
:
157 case -NFS4ERR_BADNAME
:
159 case -NFS4ERR_SHARE_DENIED
:
161 case -NFS4ERR_MINOR_VERS_MISMATCH
:
162 return -EPROTONOSUPPORT
;
163 case -NFS4ERR_ACCESS
:
165 case -NFS4ERR_FILE_OPEN
:
168 dprintk("%s could not handle NFSv4 error %d\n",
176 * This is our standard bitmap for GETATTR requests.
178 const u32 nfs4_fattr_bitmap
[3] = {
180 | FATTR4_WORD0_CHANGE
183 | FATTR4_WORD0_FILEID
,
185 | FATTR4_WORD1_NUMLINKS
187 | FATTR4_WORD1_OWNER_GROUP
188 | FATTR4_WORD1_RAWDEV
189 | FATTR4_WORD1_SPACE_USED
190 | FATTR4_WORD1_TIME_ACCESS
191 | FATTR4_WORD1_TIME_METADATA
192 | FATTR4_WORD1_TIME_MODIFY
,
193 #ifdef CONFIG_NFS_V4_SECURITY_LABEL
194 FATTR4_WORD2_SECURITY_LABEL
198 static const u32 nfs4_pnfs_open_bitmap
[3] = {
200 | FATTR4_WORD0_CHANGE
203 | FATTR4_WORD0_FILEID
,
205 | FATTR4_WORD1_NUMLINKS
207 | FATTR4_WORD1_OWNER_GROUP
208 | FATTR4_WORD1_RAWDEV
209 | FATTR4_WORD1_SPACE_USED
210 | FATTR4_WORD1_TIME_ACCESS
211 | FATTR4_WORD1_TIME_METADATA
212 | FATTR4_WORD1_TIME_MODIFY
,
213 FATTR4_WORD2_MDSTHRESHOLD
216 static const u32 nfs4_open_noattr_bitmap
[3] = {
218 | FATTR4_WORD0_CHANGE
219 | FATTR4_WORD0_FILEID
,
222 const u32 nfs4_statfs_bitmap
[3] = {
223 FATTR4_WORD0_FILES_AVAIL
224 | FATTR4_WORD0_FILES_FREE
225 | FATTR4_WORD0_FILES_TOTAL
,
226 FATTR4_WORD1_SPACE_AVAIL
227 | FATTR4_WORD1_SPACE_FREE
228 | FATTR4_WORD1_SPACE_TOTAL
231 const u32 nfs4_pathconf_bitmap
[3] = {
233 | FATTR4_WORD0_MAXNAME
,
237 const u32 nfs4_fsinfo_bitmap
[3] = { FATTR4_WORD0_MAXFILESIZE
238 | FATTR4_WORD0_MAXREAD
239 | FATTR4_WORD0_MAXWRITE
240 | FATTR4_WORD0_LEASE_TIME
,
241 FATTR4_WORD1_TIME_DELTA
242 | FATTR4_WORD1_FS_LAYOUT_TYPES
,
243 FATTR4_WORD2_LAYOUT_BLKSIZE
246 const u32 nfs4_fs_locations_bitmap
[3] = {
248 | FATTR4_WORD0_CHANGE
251 | FATTR4_WORD0_FILEID
252 | FATTR4_WORD0_FS_LOCATIONS
,
254 | FATTR4_WORD1_NUMLINKS
256 | FATTR4_WORD1_OWNER_GROUP
257 | FATTR4_WORD1_RAWDEV
258 | FATTR4_WORD1_SPACE_USED
259 | FATTR4_WORD1_TIME_ACCESS
260 | FATTR4_WORD1_TIME_METADATA
261 | FATTR4_WORD1_TIME_MODIFY
262 | FATTR4_WORD1_MOUNTED_ON_FILEID
,
265 static void nfs4_setup_readdir(u64 cookie
, __be32
*verifier
, struct dentry
*dentry
,
266 struct nfs4_readdir_arg
*readdir
)
271 readdir
->cookie
= cookie
;
272 memcpy(&readdir
->verifier
, verifier
, sizeof(readdir
->verifier
));
277 memset(&readdir
->verifier
, 0, sizeof(readdir
->verifier
));
282 * NFSv4 servers do not return entries for '.' and '..'
283 * Therefore, we fake these entries here. We let '.'
284 * have cookie 0 and '..' have cookie 1. Note that
285 * when talking to the server, we always send cookie 0
288 start
= p
= kmap_atomic(*readdir
->pages
);
291 *p
++ = xdr_one
; /* next */
292 *p
++ = xdr_zero
; /* cookie, first word */
293 *p
++ = xdr_one
; /* cookie, second word */
294 *p
++ = xdr_one
; /* entry len */
295 memcpy(p
, ".\0\0\0", 4); /* entry */
297 *p
++ = xdr_one
; /* bitmap length */
298 *p
++ = htonl(FATTR4_WORD0_FILEID
); /* bitmap */
299 *p
++ = htonl(8); /* attribute buffer length */
300 p
= xdr_encode_hyper(p
, NFS_FILEID(dentry
->d_inode
));
303 *p
++ = xdr_one
; /* next */
304 *p
++ = xdr_zero
; /* cookie, first word */
305 *p
++ = xdr_two
; /* cookie, second word */
306 *p
++ = xdr_two
; /* entry len */
307 memcpy(p
, "..\0\0", 4); /* entry */
309 *p
++ = xdr_one
; /* bitmap length */
310 *p
++ = htonl(FATTR4_WORD0_FILEID
); /* bitmap */
311 *p
++ = htonl(8); /* attribute buffer length */
312 p
= xdr_encode_hyper(p
, NFS_FILEID(dentry
->d_parent
->d_inode
));
314 readdir
->pgbase
= (char *)p
- (char *)start
;
315 readdir
->count
-= readdir
->pgbase
;
316 kunmap_atomic(start
);
319 static int nfs4_delay(struct rpc_clnt
*clnt
, long *timeout
)
326 *timeout
= NFS4_POLL_RETRY_MIN
;
327 if (*timeout
> NFS4_POLL_RETRY_MAX
)
328 *timeout
= NFS4_POLL_RETRY_MAX
;
329 freezable_schedule_timeout_killable_unsafe(*timeout
);
330 if (fatal_signal_pending(current
))
336 /* This is the error handling routine for processes that are allowed
339 static int nfs4_handle_exception(struct nfs_server
*server
, int errorcode
, struct nfs4_exception
*exception
)
341 struct nfs_client
*clp
= server
->nfs_client
;
342 struct nfs4_state
*state
= exception
->state
;
343 struct inode
*inode
= exception
->inode
;
346 exception
->retry
= 0;
350 case -NFS4ERR_OPENMODE
:
351 if (inode
&& nfs4_have_delegation(inode
, FMODE_READ
)) {
352 nfs4_inode_return_delegation(inode
);
353 exception
->retry
= 1;
358 ret
= nfs4_schedule_stateid_recovery(server
, state
);
361 goto wait_on_recovery
;
362 case -NFS4ERR_DELEG_REVOKED
:
363 case -NFS4ERR_ADMIN_REVOKED
:
364 case -NFS4ERR_BAD_STATEID
:
365 if (inode
!= NULL
&& nfs4_have_delegation(inode
, FMODE_READ
)) {
366 nfs_remove_bad_delegation(inode
);
367 exception
->retry
= 1;
372 ret
= nfs4_schedule_stateid_recovery(server
, state
);
375 goto wait_on_recovery
;
376 case -NFS4ERR_EXPIRED
:
378 ret
= nfs4_schedule_stateid_recovery(server
, state
);
382 case -NFS4ERR_STALE_STATEID
:
383 case -NFS4ERR_STALE_CLIENTID
:
384 nfs4_schedule_lease_recovery(clp
);
385 goto wait_on_recovery
;
386 #if defined(CONFIG_NFS_V4_1)
387 case -NFS4ERR_BADSESSION
:
388 case -NFS4ERR_BADSLOT
:
389 case -NFS4ERR_BAD_HIGH_SLOT
:
390 case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION
:
391 case -NFS4ERR_DEADSESSION
:
392 case -NFS4ERR_SEQ_FALSE_RETRY
:
393 case -NFS4ERR_SEQ_MISORDERED
:
394 dprintk("%s ERROR: %d Reset session\n", __func__
,
396 nfs4_schedule_session_recovery(clp
->cl_session
, errorcode
);
397 goto wait_on_recovery
;
398 #endif /* defined(CONFIG_NFS_V4_1) */
399 case -NFS4ERR_FILE_OPEN
:
400 if (exception
->timeout
> HZ
) {
401 /* We have retried a decent amount, time to
409 ret
= nfs4_delay(server
->client
, &exception
->timeout
);
412 case -NFS4ERR_RETRY_UNCACHED_REP
:
413 case -NFS4ERR_OLD_STATEID
:
414 exception
->retry
= 1;
416 case -NFS4ERR_BADOWNER
:
417 /* The following works around a Linux server bug! */
418 case -NFS4ERR_BADNAME
:
419 if (server
->caps
& NFS_CAP_UIDGID_NOMAP
) {
420 server
->caps
&= ~NFS_CAP_UIDGID_NOMAP
;
421 exception
->retry
= 1;
422 printk(KERN_WARNING
"NFS: v4 server %s "
423 "does not accept raw "
425 "Reenabling the idmapper.\n",
426 server
->nfs_client
->cl_hostname
);
429 /* We failed to handle the error */
430 return nfs4_map_errors(ret
);
432 ret
= nfs4_wait_clnt_recover(clp
);
434 exception
->retry
= 1;
439 static void do_renew_lease(struct nfs_client
*clp
, unsigned long timestamp
)
441 spin_lock(&clp
->cl_lock
);
442 if (time_before(clp
->cl_last_renewal
,timestamp
))
443 clp
->cl_last_renewal
= timestamp
;
444 spin_unlock(&clp
->cl_lock
);
447 static void renew_lease(const struct nfs_server
*server
, unsigned long timestamp
)
449 do_renew_lease(server
->nfs_client
, timestamp
);
452 #if defined(CONFIG_NFS_V4_1)
454 static void nfs41_sequence_free_slot(struct nfs4_sequence_res
*res
)
456 struct nfs4_session
*session
;
457 struct nfs4_slot_table
*tbl
;
458 bool send_new_highest_used_slotid
= false;
461 /* just wake up the next guy waiting since
462 * we may have not consumed a slot after all */
463 dprintk("%s: No slot\n", __func__
);
466 tbl
= res
->sr_slot
->table
;
467 session
= tbl
->session
;
469 spin_lock(&tbl
->slot_tbl_lock
);
470 /* Be nice to the server: try to ensure that the last transmitted
471 * value for highest_user_slotid <= target_highest_slotid
473 if (tbl
->highest_used_slotid
> tbl
->target_highest_slotid
)
474 send_new_highest_used_slotid
= true;
476 if (nfs41_wake_and_assign_slot(tbl
, res
->sr_slot
)) {
477 send_new_highest_used_slotid
= false;
480 nfs4_free_slot(tbl
, res
->sr_slot
);
482 if (tbl
->highest_used_slotid
!= NFS4_NO_SLOT
)
483 send_new_highest_used_slotid
= false;
485 spin_unlock(&tbl
->slot_tbl_lock
);
487 if (send_new_highest_used_slotid
)
488 nfs41_server_notify_highest_slotid_update(session
->clp
);
491 static int nfs41_sequence_done(struct rpc_task
*task
, struct nfs4_sequence_res
*res
)
493 struct nfs4_session
*session
;
494 struct nfs4_slot
*slot
;
495 struct nfs_client
*clp
;
496 bool interrupted
= false;
499 /* don't increment the sequence number if the task wasn't sent */
500 if (!RPC_WAS_SENT(task
))
504 session
= slot
->table
->session
;
506 if (slot
->interrupted
) {
507 slot
->interrupted
= 0;
511 /* Check the SEQUENCE operation status */
512 switch (res
->sr_status
) {
514 /* Update the slot's sequence and clientid lease timer */
517 do_renew_lease(clp
, res
->sr_timestamp
);
518 /* Check sequence flags */
519 if (res
->sr_status_flags
!= 0)
520 nfs4_schedule_lease_recovery(clp
);
521 nfs41_update_target_slotid(slot
->table
, slot
, res
);
525 * sr_status remains 1 if an RPC level error occurred.
526 * The server may or may not have processed the sequence
528 * Mark the slot as having hosted an interrupted RPC call.
530 slot
->interrupted
= 1;
533 /* The server detected a resend of the RPC call and
534 * returned NFS4ERR_DELAY as per Section 2.10.6.2
537 dprintk("%s: slot=%u seq=%u: Operation in progress\n",
542 case -NFS4ERR_BADSLOT
:
544 * The slot id we used was probably retired. Try again
545 * using a different slot id.
548 case -NFS4ERR_SEQ_MISORDERED
:
550 * Was the last operation on this sequence interrupted?
551 * If so, retry after bumping the sequence number.
558 * Could this slot have been previously retired?
559 * If so, then the server may be expecting seq_nr = 1!
561 if (slot
->seq_nr
!= 1) {
566 case -NFS4ERR_SEQ_FALSE_RETRY
:
570 /* Just update the slot sequence no. */
574 /* The session may be reset by one of the error handlers. */
575 dprintk("%s: Error %d free the slot \n", __func__
, res
->sr_status
);
576 nfs41_sequence_free_slot(res
);
579 if (rpc_restart_call_prepare(task
)) {
585 if (!rpc_restart_call(task
))
587 rpc_delay(task
, NFS4_POLL_RETRY_MAX
);
591 static int nfs4_sequence_done(struct rpc_task
*task
,
592 struct nfs4_sequence_res
*res
)
594 if (res
->sr_slot
== NULL
)
596 return nfs41_sequence_done(task
, res
);
599 static void nfs41_init_sequence(struct nfs4_sequence_args
*args
,
600 struct nfs4_sequence_res
*res
, int cache_reply
)
602 args
->sa_slot
= NULL
;
603 args
->sa_cache_this
= 0;
604 args
->sa_privileged
= 0;
606 args
->sa_cache_this
= 1;
610 static void nfs4_set_sequence_privileged(struct nfs4_sequence_args
*args
)
612 args
->sa_privileged
= 1;
615 int nfs41_setup_sequence(struct nfs4_session
*session
,
616 struct nfs4_sequence_args
*args
,
617 struct nfs4_sequence_res
*res
,
618 struct rpc_task
*task
)
620 struct nfs4_slot
*slot
;
621 struct nfs4_slot_table
*tbl
;
623 dprintk("--> %s\n", __func__
);
624 /* slot already allocated? */
625 if (res
->sr_slot
!= NULL
)
628 tbl
= &session
->fc_slot_table
;
630 task
->tk_timeout
= 0;
632 spin_lock(&tbl
->slot_tbl_lock
);
633 if (test_bit(NFS4_SLOT_TBL_DRAINING
, &tbl
->slot_tbl_state
) &&
634 !args
->sa_privileged
) {
635 /* The state manager will wait until the slot table is empty */
636 dprintk("%s session is draining\n", __func__
);
640 slot
= nfs4_alloc_slot(tbl
);
642 /* If out of memory, try again in 1/4 second */
643 if (slot
== ERR_PTR(-ENOMEM
))
644 task
->tk_timeout
= HZ
>> 2;
645 dprintk("<-- %s: no free slots\n", __func__
);
648 spin_unlock(&tbl
->slot_tbl_lock
);
650 args
->sa_slot
= slot
;
652 dprintk("<-- %s slotid=%d seqid=%d\n", __func__
,
653 slot
->slot_nr
, slot
->seq_nr
);
656 res
->sr_timestamp
= jiffies
;
657 res
->sr_status_flags
= 0;
659 * sr_status is only set in decode_sequence, and so will remain
660 * set to 1 if an rpc level failure occurs.
664 rpc_call_start(task
);
667 /* Privileged tasks are queued with top priority */
668 if (args
->sa_privileged
)
669 rpc_sleep_on_priority(&tbl
->slot_tbl_waitq
, task
,
670 NULL
, RPC_PRIORITY_PRIVILEGED
);
672 rpc_sleep_on(&tbl
->slot_tbl_waitq
, task
, NULL
);
673 spin_unlock(&tbl
->slot_tbl_lock
);
676 EXPORT_SYMBOL_GPL(nfs41_setup_sequence
);
678 int nfs4_setup_sequence(const struct nfs_server
*server
,
679 struct nfs4_sequence_args
*args
,
680 struct nfs4_sequence_res
*res
,
681 struct rpc_task
*task
)
683 struct nfs4_session
*session
= nfs4_get_session(server
);
686 if (session
== NULL
) {
687 rpc_call_start(task
);
691 dprintk("--> %s clp %p session %p sr_slot %d\n",
692 __func__
, session
->clp
, session
, res
->sr_slot
?
693 res
->sr_slot
->slot_nr
: -1);
695 ret
= nfs41_setup_sequence(session
, args
, res
, task
);
697 dprintk("<-- %s status=%d\n", __func__
, ret
);
701 struct nfs41_call_sync_data
{
702 const struct nfs_server
*seq_server
;
703 struct nfs4_sequence_args
*seq_args
;
704 struct nfs4_sequence_res
*seq_res
;
707 static void nfs41_call_sync_prepare(struct rpc_task
*task
, void *calldata
)
709 struct nfs41_call_sync_data
*data
= calldata
;
710 struct nfs4_session
*session
= nfs4_get_session(data
->seq_server
);
712 dprintk("--> %s data->seq_server %p\n", __func__
, data
->seq_server
);
714 nfs41_setup_sequence(session
, data
->seq_args
, data
->seq_res
, task
);
717 static void nfs41_call_sync_done(struct rpc_task
*task
, void *calldata
)
719 struct nfs41_call_sync_data
*data
= calldata
;
721 nfs41_sequence_done(task
, data
->seq_res
);
724 static const struct rpc_call_ops nfs41_call_sync_ops
= {
725 .rpc_call_prepare
= nfs41_call_sync_prepare
,
726 .rpc_call_done
= nfs41_call_sync_done
,
729 static int nfs4_call_sync_sequence(struct rpc_clnt
*clnt
,
730 struct nfs_server
*server
,
731 struct rpc_message
*msg
,
732 struct nfs4_sequence_args
*args
,
733 struct nfs4_sequence_res
*res
)
736 struct rpc_task
*task
;
737 struct nfs41_call_sync_data data
= {
738 .seq_server
= server
,
742 struct rpc_task_setup task_setup
= {
745 .callback_ops
= &nfs41_call_sync_ops
,
746 .callback_data
= &data
749 task
= rpc_run_task(&task_setup
);
753 ret
= task
->tk_status
;
761 void nfs41_init_sequence(struct nfs4_sequence_args
*args
,
762 struct nfs4_sequence_res
*res
, int cache_reply
)
766 static void nfs4_set_sequence_privileged(struct nfs4_sequence_args
*args
)
771 static int nfs4_sequence_done(struct rpc_task
*task
,
772 struct nfs4_sequence_res
*res
)
776 #endif /* CONFIG_NFS_V4_1 */
779 int _nfs4_call_sync(struct rpc_clnt
*clnt
,
780 struct nfs_server
*server
,
781 struct rpc_message
*msg
,
782 struct nfs4_sequence_args
*args
,
783 struct nfs4_sequence_res
*res
)
785 return rpc_call_sync(clnt
, msg
, 0);
789 int nfs4_call_sync(struct rpc_clnt
*clnt
,
790 struct nfs_server
*server
,
791 struct rpc_message
*msg
,
792 struct nfs4_sequence_args
*args
,
793 struct nfs4_sequence_res
*res
,
796 nfs41_init_sequence(args
, res
, cache_reply
);
797 return server
->nfs_client
->cl_mvops
->call_sync(clnt
, server
, msg
,
801 static void update_changeattr(struct inode
*dir
, struct nfs4_change_info
*cinfo
)
803 struct nfs_inode
*nfsi
= NFS_I(dir
);
805 spin_lock(&dir
->i_lock
);
806 nfsi
->cache_validity
|= NFS_INO_INVALID_ATTR
|NFS_INO_INVALID_DATA
;
807 if (!cinfo
->atomic
|| cinfo
->before
!= dir
->i_version
)
808 nfs_force_lookup_revalidate(dir
);
809 dir
->i_version
= cinfo
->after
;
810 nfs_fscache_invalidate(dir
);
811 spin_unlock(&dir
->i_lock
);
814 struct nfs4_opendata
{
816 struct nfs_openargs o_arg
;
817 struct nfs_openres o_res
;
818 struct nfs_open_confirmargs c_arg
;
819 struct nfs_open_confirmres c_res
;
820 struct nfs4_string owner_name
;
821 struct nfs4_string group_name
;
822 struct nfs_fattr f_attr
;
823 struct nfs4_label
*f_label
;
825 struct dentry
*dentry
;
826 struct nfs4_state_owner
*owner
;
827 struct nfs4_state
*state
;
829 unsigned long timestamp
;
830 unsigned int rpc_done
: 1;
831 unsigned int is_recover
: 1;
836 static bool nfs4_clear_cap_atomic_open_v1(struct nfs_server
*server
,
837 int err
, struct nfs4_exception
*exception
)
841 if (!(server
->caps
& NFS_CAP_ATOMIC_OPEN_V1
))
843 server
->caps
&= ~NFS_CAP_ATOMIC_OPEN_V1
;
844 exception
->retry
= 1;
848 static enum open_claim_type4
849 nfs4_map_atomic_open_claim(struct nfs_server
*server
,
850 enum open_claim_type4 claim
)
852 if (server
->caps
& NFS_CAP_ATOMIC_OPEN_V1
)
857 case NFS4_OPEN_CLAIM_FH
:
858 return NFS4_OPEN_CLAIM_NULL
;
859 case NFS4_OPEN_CLAIM_DELEG_CUR_FH
:
860 return NFS4_OPEN_CLAIM_DELEGATE_CUR
;
861 case NFS4_OPEN_CLAIM_DELEG_PREV_FH
:
862 return NFS4_OPEN_CLAIM_DELEGATE_PREV
;
866 static void nfs4_init_opendata_res(struct nfs4_opendata
*p
)
868 p
->o_res
.f_attr
= &p
->f_attr
;
869 p
->o_res
.f_label
= p
->f_label
;
870 p
->o_res
.seqid
= p
->o_arg
.seqid
;
871 p
->c_res
.seqid
= p
->c_arg
.seqid
;
872 p
->o_res
.server
= p
->o_arg
.server
;
873 p
->o_res
.access_request
= p
->o_arg
.access
;
874 nfs_fattr_init(&p
->f_attr
);
875 nfs_fattr_init_names(&p
->f_attr
, &p
->owner_name
, &p
->group_name
);
878 static struct nfs4_opendata
*nfs4_opendata_alloc(struct dentry
*dentry
,
879 struct nfs4_state_owner
*sp
, fmode_t fmode
, int flags
,
880 const struct iattr
*attrs
,
881 struct nfs4_label
*label
,
882 enum open_claim_type4 claim
,
885 struct dentry
*parent
= dget_parent(dentry
);
886 struct inode
*dir
= parent
->d_inode
;
887 struct nfs_server
*server
= NFS_SERVER(dir
);
888 struct nfs4_opendata
*p
;
890 p
= kzalloc(sizeof(*p
), gfp_mask
);
894 p
->f_label
= nfs4_label_alloc(server
, gfp_mask
);
895 if (IS_ERR(p
->f_label
))
898 p
->o_arg
.seqid
= nfs_alloc_seqid(&sp
->so_seqid
, gfp_mask
);
899 if (p
->o_arg
.seqid
== NULL
)
901 nfs_sb_active(dentry
->d_sb
);
902 p
->dentry
= dget(dentry
);
905 atomic_inc(&sp
->so_count
);
906 p
->o_arg
.open_flags
= flags
;
907 p
->o_arg
.fmode
= fmode
& (FMODE_READ
|FMODE_WRITE
);
908 /* don't put an ACCESS op in OPEN compound if O_EXCL, because ACCESS
909 * will return permission denied for all bits until close */
910 if (!(flags
& O_EXCL
)) {
911 /* ask server to check for all possible rights as results
913 p
->o_arg
.access
= NFS4_ACCESS_READ
| NFS4_ACCESS_MODIFY
|
914 NFS4_ACCESS_EXTEND
| NFS4_ACCESS_EXECUTE
;
916 p
->o_arg
.clientid
= server
->nfs_client
->cl_clientid
;
917 p
->o_arg
.id
.create_time
= ktime_to_ns(sp
->so_seqid
.create_time
);
918 p
->o_arg
.id
.uniquifier
= sp
->so_seqid
.owner_id
;
919 p
->o_arg
.name
= &dentry
->d_name
;
920 p
->o_arg
.server
= server
;
921 p
->o_arg
.bitmask
= nfs4_bitmask(server
, label
);
922 p
->o_arg
.open_bitmap
= &nfs4_fattr_bitmap
[0];
923 p
->o_arg
.label
= label
;
924 p
->o_arg
.claim
= nfs4_map_atomic_open_claim(server
, claim
);
925 switch (p
->o_arg
.claim
) {
926 case NFS4_OPEN_CLAIM_NULL
:
927 case NFS4_OPEN_CLAIM_DELEGATE_CUR
:
928 case NFS4_OPEN_CLAIM_DELEGATE_PREV
:
929 p
->o_arg
.fh
= NFS_FH(dir
);
931 case NFS4_OPEN_CLAIM_PREVIOUS
:
932 case NFS4_OPEN_CLAIM_FH
:
933 case NFS4_OPEN_CLAIM_DELEG_CUR_FH
:
934 case NFS4_OPEN_CLAIM_DELEG_PREV_FH
:
935 p
->o_arg
.fh
= NFS_FH(dentry
->d_inode
);
937 if (attrs
!= NULL
&& attrs
->ia_valid
!= 0) {
940 p
->o_arg
.u
.attrs
= &p
->attrs
;
941 memcpy(&p
->attrs
, attrs
, sizeof(p
->attrs
));
944 verf
[1] = current
->pid
;
945 memcpy(p
->o_arg
.u
.verifier
.data
, verf
,
946 sizeof(p
->o_arg
.u
.verifier
.data
));
948 p
->c_arg
.fh
= &p
->o_res
.fh
;
949 p
->c_arg
.stateid
= &p
->o_res
.stateid
;
950 p
->c_arg
.seqid
= p
->o_arg
.seqid
;
951 nfs4_init_opendata_res(p
);
956 nfs4_label_free(p
->f_label
);
964 static void nfs4_opendata_free(struct kref
*kref
)
966 struct nfs4_opendata
*p
= container_of(kref
,
967 struct nfs4_opendata
, kref
);
968 struct super_block
*sb
= p
->dentry
->d_sb
;
970 nfs_free_seqid(p
->o_arg
.seqid
);
971 if (p
->state
!= NULL
)
972 nfs4_put_open_state(p
->state
);
973 nfs4_put_state_owner(p
->owner
);
975 nfs4_label_free(p
->f_label
);
980 nfs_fattr_free_names(&p
->f_attr
);
984 static void nfs4_opendata_put(struct nfs4_opendata
*p
)
987 kref_put(&p
->kref
, nfs4_opendata_free
);
990 static int nfs4_wait_for_completion_rpc_task(struct rpc_task
*task
)
994 ret
= rpc_wait_for_completion_task(task
);
998 static int can_open_cached(struct nfs4_state
*state
, fmode_t mode
, int open_mode
)
1002 if (open_mode
& (O_EXCL
|O_TRUNC
))
1004 switch (mode
& (FMODE_READ
|FMODE_WRITE
)) {
1006 ret
|= test_bit(NFS_O_RDONLY_STATE
, &state
->flags
) != 0
1007 && state
->n_rdonly
!= 0;
1010 ret
|= test_bit(NFS_O_WRONLY_STATE
, &state
->flags
) != 0
1011 && state
->n_wronly
!= 0;
1013 case FMODE_READ
|FMODE_WRITE
:
1014 ret
|= test_bit(NFS_O_RDWR_STATE
, &state
->flags
) != 0
1015 && state
->n_rdwr
!= 0;
1021 static int can_open_delegated(struct nfs_delegation
*delegation
, fmode_t fmode
)
1023 if (delegation
== NULL
)
1025 if ((delegation
->type
& fmode
) != fmode
)
1027 if (test_bit(NFS_DELEGATION_NEED_RECLAIM
, &delegation
->flags
))
1029 if (test_bit(NFS_DELEGATION_RETURNING
, &delegation
->flags
))
1031 nfs_mark_delegation_referenced(delegation
);
1035 static void update_open_stateflags(struct nfs4_state
*state
, fmode_t fmode
)
1044 case FMODE_READ
|FMODE_WRITE
:
1047 nfs4_state_set_mode_locked(state
, state
->state
| fmode
);
1050 static void nfs_set_open_stateid_locked(struct nfs4_state
*state
, nfs4_stateid
*stateid
, fmode_t fmode
)
1052 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) == 0)
1053 nfs4_stateid_copy(&state
->stateid
, stateid
);
1054 nfs4_stateid_copy(&state
->open_stateid
, stateid
);
1055 set_bit(NFS_OPEN_STATE
, &state
->flags
);
1058 set_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
1061 set_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
1063 case FMODE_READ
|FMODE_WRITE
:
1064 set_bit(NFS_O_RDWR_STATE
, &state
->flags
);
1068 static void nfs_set_open_stateid(struct nfs4_state
*state
, nfs4_stateid
*stateid
, fmode_t fmode
)
1070 write_seqlock(&state
->seqlock
);
1071 nfs_set_open_stateid_locked(state
, stateid
, fmode
);
1072 write_sequnlock(&state
->seqlock
);
1075 static void __update_open_stateid(struct nfs4_state
*state
, nfs4_stateid
*open_stateid
, const nfs4_stateid
*deleg_stateid
, fmode_t fmode
)
1078 * Protect the call to nfs4_state_set_mode_locked and
1079 * serialise the stateid update
1081 write_seqlock(&state
->seqlock
);
1082 if (deleg_stateid
!= NULL
) {
1083 nfs4_stateid_copy(&state
->stateid
, deleg_stateid
);
1084 set_bit(NFS_DELEGATED_STATE
, &state
->flags
);
1086 if (open_stateid
!= NULL
)
1087 nfs_set_open_stateid_locked(state
, open_stateid
, fmode
);
1088 write_sequnlock(&state
->seqlock
);
1089 spin_lock(&state
->owner
->so_lock
);
1090 update_open_stateflags(state
, fmode
);
1091 spin_unlock(&state
->owner
->so_lock
);
1094 static int update_open_stateid(struct nfs4_state
*state
, nfs4_stateid
*open_stateid
, nfs4_stateid
*delegation
, fmode_t fmode
)
1096 struct nfs_inode
*nfsi
= NFS_I(state
->inode
);
1097 struct nfs_delegation
*deleg_cur
;
1100 fmode
&= (FMODE_READ
|FMODE_WRITE
);
1103 deleg_cur
= rcu_dereference(nfsi
->delegation
);
1104 if (deleg_cur
== NULL
)
1107 spin_lock(&deleg_cur
->lock
);
1108 if (rcu_dereference(nfsi
->delegation
) != deleg_cur
||
1109 test_bit(NFS_DELEGATION_RETURNING
, &deleg_cur
->flags
) ||
1110 (deleg_cur
->type
& fmode
) != fmode
)
1111 goto no_delegation_unlock
;
1113 if (delegation
== NULL
)
1114 delegation
= &deleg_cur
->stateid
;
1115 else if (!nfs4_stateid_match(&deleg_cur
->stateid
, delegation
))
1116 goto no_delegation_unlock
;
1118 nfs_mark_delegation_referenced(deleg_cur
);
1119 __update_open_stateid(state
, open_stateid
, &deleg_cur
->stateid
, fmode
);
1121 no_delegation_unlock
:
1122 spin_unlock(&deleg_cur
->lock
);
1126 if (!ret
&& open_stateid
!= NULL
) {
1127 __update_open_stateid(state
, open_stateid
, NULL
, fmode
);
1135 static void nfs4_return_incompatible_delegation(struct inode
*inode
, fmode_t fmode
)
1137 struct nfs_delegation
*delegation
;
1140 delegation
= rcu_dereference(NFS_I(inode
)->delegation
);
1141 if (delegation
== NULL
|| (delegation
->type
& fmode
) == fmode
) {
1146 nfs4_inode_return_delegation(inode
);
1149 static struct nfs4_state
*nfs4_try_open_cached(struct nfs4_opendata
*opendata
)
1151 struct nfs4_state
*state
= opendata
->state
;
1152 struct nfs_inode
*nfsi
= NFS_I(state
->inode
);
1153 struct nfs_delegation
*delegation
;
1154 int open_mode
= opendata
->o_arg
.open_flags
;
1155 fmode_t fmode
= opendata
->o_arg
.fmode
;
1156 nfs4_stateid stateid
;
1160 if (can_open_cached(state
, fmode
, open_mode
)) {
1161 spin_lock(&state
->owner
->so_lock
);
1162 if (can_open_cached(state
, fmode
, open_mode
)) {
1163 update_open_stateflags(state
, fmode
);
1164 spin_unlock(&state
->owner
->so_lock
);
1165 goto out_return_state
;
1167 spin_unlock(&state
->owner
->so_lock
);
1170 delegation
= rcu_dereference(nfsi
->delegation
);
1171 if (!can_open_delegated(delegation
, fmode
)) {
1175 /* Save the delegation */
1176 nfs4_stateid_copy(&stateid
, &delegation
->stateid
);
1178 nfs_release_seqid(opendata
->o_arg
.seqid
);
1179 if (!opendata
->is_recover
) {
1180 ret
= nfs_may_open(state
->inode
, state
->owner
->so_cred
, open_mode
);
1186 /* Try to update the stateid using the delegation */
1187 if (update_open_stateid(state
, NULL
, &stateid
, fmode
))
1188 goto out_return_state
;
1191 return ERR_PTR(ret
);
1193 atomic_inc(&state
->count
);
1198 nfs4_opendata_check_deleg(struct nfs4_opendata
*data
, struct nfs4_state
*state
)
1200 struct nfs_client
*clp
= NFS_SERVER(state
->inode
)->nfs_client
;
1201 struct nfs_delegation
*delegation
;
1202 int delegation_flags
= 0;
1205 delegation
= rcu_dereference(NFS_I(state
->inode
)->delegation
);
1207 delegation_flags
= delegation
->flags
;
1209 if (data
->o_arg
.claim
== NFS4_OPEN_CLAIM_DELEGATE_CUR
) {
1210 pr_err_ratelimited("NFS: Broken NFSv4 server %s is "
1211 "returning a delegation for "
1212 "OPEN(CLAIM_DELEGATE_CUR)\n",
1214 } else if ((delegation_flags
& 1UL<<NFS_DELEGATION_NEED_RECLAIM
) == 0)
1215 nfs_inode_set_delegation(state
->inode
,
1216 data
->owner
->so_cred
,
1219 nfs_inode_reclaim_delegation(state
->inode
,
1220 data
->owner
->so_cred
,
1225 * Check the inode attributes against the CLAIM_PREVIOUS returned attributes
1226 * and update the nfs4_state.
1228 static struct nfs4_state
*
1229 _nfs4_opendata_reclaim_to_nfs4_state(struct nfs4_opendata
*data
)
1231 struct inode
*inode
= data
->state
->inode
;
1232 struct nfs4_state
*state
= data
->state
;
1235 if (!data
->rpc_done
) {
1236 ret
= data
->rpc_status
;
1241 if (!(data
->f_attr
.valid
& NFS_ATTR_FATTR_TYPE
) ||
1242 !(data
->f_attr
.valid
& NFS_ATTR_FATTR_FILEID
) ||
1243 !(data
->f_attr
.valid
& NFS_ATTR_FATTR_CHANGE
))
1247 state
= nfs4_get_open_state(inode
, data
->owner
);
1251 ret
= nfs_refresh_inode(inode
, &data
->f_attr
);
1255 nfs_setsecurity(inode
, &data
->f_attr
, data
->f_label
);
1257 if (data
->o_res
.delegation_type
!= 0)
1258 nfs4_opendata_check_deleg(data
, state
);
1259 update_open_stateid(state
, &data
->o_res
.stateid
, NULL
,
1264 return ERR_PTR(ret
);
1268 static struct nfs4_state
*
1269 _nfs4_opendata_to_nfs4_state(struct nfs4_opendata
*data
)
1271 struct inode
*inode
;
1272 struct nfs4_state
*state
= NULL
;
1275 if (!data
->rpc_done
) {
1276 state
= nfs4_try_open_cached(data
);
1281 if (!(data
->f_attr
.valid
& NFS_ATTR_FATTR
))
1283 inode
= nfs_fhget(data
->dir
->d_sb
, &data
->o_res
.fh
, &data
->f_attr
, data
->f_label
);
1284 ret
= PTR_ERR(inode
);
1288 state
= nfs4_get_open_state(inode
, data
->owner
);
1291 if (data
->o_res
.delegation_type
!= 0)
1292 nfs4_opendata_check_deleg(data
, state
);
1293 update_open_stateid(state
, &data
->o_res
.stateid
, NULL
,
1297 nfs_release_seqid(data
->o_arg
.seqid
);
1302 return ERR_PTR(ret
);
1305 static struct nfs4_state
*
1306 nfs4_opendata_to_nfs4_state(struct nfs4_opendata
*data
)
1308 if (data
->o_arg
.claim
== NFS4_OPEN_CLAIM_PREVIOUS
)
1309 return _nfs4_opendata_reclaim_to_nfs4_state(data
);
1310 return _nfs4_opendata_to_nfs4_state(data
);
1313 static struct nfs_open_context
*nfs4_state_find_open_context(struct nfs4_state
*state
)
1315 struct nfs_inode
*nfsi
= NFS_I(state
->inode
);
1316 struct nfs_open_context
*ctx
;
1318 spin_lock(&state
->inode
->i_lock
);
1319 list_for_each_entry(ctx
, &nfsi
->open_files
, list
) {
1320 if (ctx
->state
!= state
)
1322 get_nfs_open_context(ctx
);
1323 spin_unlock(&state
->inode
->i_lock
);
1326 spin_unlock(&state
->inode
->i_lock
);
1327 return ERR_PTR(-ENOENT
);
1330 static struct nfs4_opendata
*nfs4_open_recoverdata_alloc(struct nfs_open_context
*ctx
,
1331 struct nfs4_state
*state
, enum open_claim_type4 claim
)
1333 struct nfs4_opendata
*opendata
;
1335 opendata
= nfs4_opendata_alloc(ctx
->dentry
, state
->owner
, 0, 0,
1336 NULL
, NULL
, claim
, GFP_NOFS
);
1337 if (opendata
== NULL
)
1338 return ERR_PTR(-ENOMEM
);
1339 opendata
->state
= state
;
1340 atomic_inc(&state
->count
);
1344 static int nfs4_open_recover_helper(struct nfs4_opendata
*opendata
, fmode_t fmode
, struct nfs4_state
**res
)
1346 struct nfs4_state
*newstate
;
1349 opendata
->o_arg
.open_flags
= 0;
1350 opendata
->o_arg
.fmode
= fmode
;
1351 memset(&opendata
->o_res
, 0, sizeof(opendata
->o_res
));
1352 memset(&opendata
->c_res
, 0, sizeof(opendata
->c_res
));
1353 nfs4_init_opendata_res(opendata
);
1354 ret
= _nfs4_recover_proc_open(opendata
);
1357 newstate
= nfs4_opendata_to_nfs4_state(opendata
);
1358 if (IS_ERR(newstate
))
1359 return PTR_ERR(newstate
);
1360 nfs4_close_state(newstate
, fmode
);
1365 static int nfs4_open_recover(struct nfs4_opendata
*opendata
, struct nfs4_state
*state
)
1367 struct nfs4_state
*newstate
;
1370 /* memory barrier prior to reading state->n_* */
1371 clear_bit(NFS_DELEGATED_STATE
, &state
->flags
);
1372 clear_bit(NFS_OPEN_STATE
, &state
->flags
);
1374 if (state
->n_rdwr
!= 0) {
1375 clear_bit(NFS_O_RDWR_STATE
, &state
->flags
);
1376 ret
= nfs4_open_recover_helper(opendata
, FMODE_READ
|FMODE_WRITE
, &newstate
);
1379 if (newstate
!= state
)
1382 if (state
->n_wronly
!= 0) {
1383 clear_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
1384 ret
= nfs4_open_recover_helper(opendata
, FMODE_WRITE
, &newstate
);
1387 if (newstate
!= state
)
1390 if (state
->n_rdonly
!= 0) {
1391 clear_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
1392 ret
= nfs4_open_recover_helper(opendata
, FMODE_READ
, &newstate
);
1395 if (newstate
!= state
)
1399 * We may have performed cached opens for all three recoveries.
1400 * Check if we need to update the current stateid.
1402 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) == 0 &&
1403 !nfs4_stateid_match(&state
->stateid
, &state
->open_stateid
)) {
1404 write_seqlock(&state
->seqlock
);
1405 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) == 0)
1406 nfs4_stateid_copy(&state
->stateid
, &state
->open_stateid
);
1407 write_sequnlock(&state
->seqlock
);
1414 * reclaim state on the server after a reboot.
1416 static int _nfs4_do_open_reclaim(struct nfs_open_context
*ctx
, struct nfs4_state
*state
)
1418 struct nfs_delegation
*delegation
;
1419 struct nfs4_opendata
*opendata
;
1420 fmode_t delegation_type
= 0;
1423 opendata
= nfs4_open_recoverdata_alloc(ctx
, state
,
1424 NFS4_OPEN_CLAIM_PREVIOUS
);
1425 if (IS_ERR(opendata
))
1426 return PTR_ERR(opendata
);
1428 delegation
= rcu_dereference(NFS_I(state
->inode
)->delegation
);
1429 if (delegation
!= NULL
&& test_bit(NFS_DELEGATION_NEED_RECLAIM
, &delegation
->flags
) != 0)
1430 delegation_type
= delegation
->type
;
1432 opendata
->o_arg
.u
.delegation_type
= delegation_type
;
1433 status
= nfs4_open_recover(opendata
, state
);
1434 nfs4_opendata_put(opendata
);
1438 static int nfs4_do_open_reclaim(struct nfs_open_context
*ctx
, struct nfs4_state
*state
)
1440 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
1441 struct nfs4_exception exception
= { };
1444 err
= _nfs4_do_open_reclaim(ctx
, state
);
1445 trace_nfs4_open_reclaim(ctx
, 0, err
);
1446 if (nfs4_clear_cap_atomic_open_v1(server
, err
, &exception
))
1448 if (err
!= -NFS4ERR_DELAY
)
1450 nfs4_handle_exception(server
, err
, &exception
);
1451 } while (exception
.retry
);
1455 static int nfs4_open_reclaim(struct nfs4_state_owner
*sp
, struct nfs4_state
*state
)
1457 struct nfs_open_context
*ctx
;
1460 ctx
= nfs4_state_find_open_context(state
);
1463 ret
= nfs4_do_open_reclaim(ctx
, state
);
1464 put_nfs_open_context(ctx
);
1468 static int nfs4_handle_delegation_recall_error(struct nfs_server
*server
, struct nfs4_state
*state
, const nfs4_stateid
*stateid
, int err
)
1472 printk(KERN_ERR
"NFS: %s: unhandled error "
1473 "%d.\n", __func__
, err
);
1478 case -NFS4ERR_BADSESSION
:
1479 case -NFS4ERR_BADSLOT
:
1480 case -NFS4ERR_BAD_HIGH_SLOT
:
1481 case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION
:
1482 case -NFS4ERR_DEADSESSION
:
1483 set_bit(NFS_DELEGATED_STATE
, &state
->flags
);
1484 nfs4_schedule_session_recovery(server
->nfs_client
->cl_session
, err
);
1486 case -NFS4ERR_STALE_CLIENTID
:
1487 case -NFS4ERR_STALE_STATEID
:
1488 set_bit(NFS_DELEGATED_STATE
, &state
->flags
);
1489 case -NFS4ERR_EXPIRED
:
1490 /* Don't recall a delegation if it was lost */
1491 nfs4_schedule_lease_recovery(server
->nfs_client
);
1493 case -NFS4ERR_DELEG_REVOKED
:
1494 case -NFS4ERR_ADMIN_REVOKED
:
1495 case -NFS4ERR_BAD_STATEID
:
1496 case -NFS4ERR_OPENMODE
:
1497 nfs_inode_find_state_and_recover(state
->inode
,
1499 nfs4_schedule_stateid_recovery(server
, state
);
1501 case -NFS4ERR_DELAY
:
1502 case -NFS4ERR_GRACE
:
1503 set_bit(NFS_DELEGATED_STATE
, &state
->flags
);
1507 case -NFS4ERR_DENIED
:
1508 /* kill_proc(fl->fl_pid, SIGLOST, 1); */
1514 int nfs4_open_delegation_recall(struct nfs_open_context
*ctx
, struct nfs4_state
*state
, const nfs4_stateid
*stateid
)
1516 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
1517 struct nfs4_opendata
*opendata
;
1520 opendata
= nfs4_open_recoverdata_alloc(ctx
, state
,
1521 NFS4_OPEN_CLAIM_DELEG_CUR_FH
);
1522 if (IS_ERR(opendata
))
1523 return PTR_ERR(opendata
);
1524 nfs4_stateid_copy(&opendata
->o_arg
.u
.delegation
, stateid
);
1525 err
= nfs4_open_recover(opendata
, state
);
1526 nfs4_opendata_put(opendata
);
1527 return nfs4_handle_delegation_recall_error(server
, state
, stateid
, err
);
1530 static void nfs4_open_confirm_done(struct rpc_task
*task
, void *calldata
)
1532 struct nfs4_opendata
*data
= calldata
;
1534 data
->rpc_status
= task
->tk_status
;
1535 if (data
->rpc_status
== 0) {
1536 nfs4_stateid_copy(&data
->o_res
.stateid
, &data
->c_res
.stateid
);
1537 nfs_confirm_seqid(&data
->owner
->so_seqid
, 0);
1538 renew_lease(data
->o_res
.server
, data
->timestamp
);
1543 static void nfs4_open_confirm_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_done
)
1554 state
= nfs4_opendata_to_nfs4_state(data
);
1556 nfs4_close_state(state
, data
->o_arg
.fmode
);
1558 nfs4_opendata_put(data
);
1561 static const struct rpc_call_ops nfs4_open_confirm_ops
= {
1562 .rpc_call_done
= nfs4_open_confirm_done
,
1563 .rpc_release
= nfs4_open_confirm_release
,
1567 * Note: On error, nfs4_proc_open_confirm will free the struct nfs4_opendata
1569 static int _nfs4_proc_open_confirm(struct nfs4_opendata
*data
)
1571 struct nfs_server
*server
= NFS_SERVER(data
->dir
->d_inode
);
1572 struct rpc_task
*task
;
1573 struct rpc_message msg
= {
1574 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_OPEN_CONFIRM
],
1575 .rpc_argp
= &data
->c_arg
,
1576 .rpc_resp
= &data
->c_res
,
1577 .rpc_cred
= data
->owner
->so_cred
,
1579 struct rpc_task_setup task_setup_data
= {
1580 .rpc_client
= server
->client
,
1581 .rpc_message
= &msg
,
1582 .callback_ops
= &nfs4_open_confirm_ops
,
1583 .callback_data
= data
,
1584 .workqueue
= nfsiod_workqueue
,
1585 .flags
= RPC_TASK_ASYNC
,
1589 kref_get(&data
->kref
);
1591 data
->rpc_status
= 0;
1592 data
->timestamp
= jiffies
;
1593 task
= rpc_run_task(&task_setup_data
);
1595 return PTR_ERR(task
);
1596 status
= nfs4_wait_for_completion_rpc_task(task
);
1598 data
->cancelled
= 1;
1601 status
= data
->rpc_status
;
1606 static void nfs4_open_prepare(struct rpc_task
*task
, void *calldata
)
1608 struct nfs4_opendata
*data
= calldata
;
1609 struct nfs4_state_owner
*sp
= data
->owner
;
1610 struct nfs_client
*clp
= sp
->so_server
->nfs_client
;
1612 if (nfs_wait_on_sequence(data
->o_arg
.seqid
, task
) != 0)
1615 * Check if we still need to send an OPEN call, or if we can use
1616 * a delegation instead.
1618 if (data
->state
!= NULL
) {
1619 struct nfs_delegation
*delegation
;
1621 if (can_open_cached(data
->state
, data
->o_arg
.fmode
, data
->o_arg
.open_flags
))
1624 delegation
= rcu_dereference(NFS_I(data
->state
->inode
)->delegation
);
1625 if (data
->o_arg
.claim
!= NFS4_OPEN_CLAIM_DELEGATE_CUR
&&
1626 data
->o_arg
.claim
!= NFS4_OPEN_CLAIM_DELEG_CUR_FH
&&
1627 can_open_delegated(delegation
, data
->o_arg
.fmode
))
1628 goto unlock_no_action
;
1631 /* Update client id. */
1632 data
->o_arg
.clientid
= clp
->cl_clientid
;
1633 switch (data
->o_arg
.claim
) {
1634 case NFS4_OPEN_CLAIM_PREVIOUS
:
1635 case NFS4_OPEN_CLAIM_DELEG_CUR_FH
:
1636 case NFS4_OPEN_CLAIM_DELEG_PREV_FH
:
1637 data
->o_arg
.open_bitmap
= &nfs4_open_noattr_bitmap
[0];
1638 case NFS4_OPEN_CLAIM_FH
:
1639 task
->tk_msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_OPEN_NOATTR
];
1640 nfs_copy_fh(&data
->o_res
.fh
, data
->o_arg
.fh
);
1642 data
->timestamp
= jiffies
;
1643 if (nfs4_setup_sequence(data
->o_arg
.server
,
1644 &data
->o_arg
.seq_args
,
1645 &data
->o_res
.seq_res
,
1647 nfs_release_seqid(data
->o_arg
.seqid
);
1649 /* Set the create mode (note dependency on the session type) */
1650 data
->o_arg
.createmode
= NFS4_CREATE_UNCHECKED
;
1651 if (data
->o_arg
.open_flags
& O_EXCL
) {
1652 data
->o_arg
.createmode
= NFS4_CREATE_EXCLUSIVE
;
1653 if (nfs4_has_persistent_session(clp
))
1654 data
->o_arg
.createmode
= NFS4_CREATE_GUARDED
;
1655 else if (clp
->cl_mvops
->minor_version
> 0)
1656 data
->o_arg
.createmode
= NFS4_CREATE_EXCLUSIVE4_1
;
1662 task
->tk_action
= NULL
;
1664 nfs4_sequence_done(task
, &data
->o_res
.seq_res
);
1667 static void nfs4_open_done(struct rpc_task
*task
, void *calldata
)
1669 struct nfs4_opendata
*data
= calldata
;
1671 data
->rpc_status
= task
->tk_status
;
1673 if (!nfs4_sequence_done(task
, &data
->o_res
.seq_res
))
1676 if (task
->tk_status
== 0) {
1677 if (data
->o_res
.f_attr
->valid
& NFS_ATTR_FATTR_TYPE
) {
1678 switch (data
->o_res
.f_attr
->mode
& S_IFMT
) {
1682 data
->rpc_status
= -ELOOP
;
1685 data
->rpc_status
= -EISDIR
;
1688 data
->rpc_status
= -ENOTDIR
;
1691 renew_lease(data
->o_res
.server
, data
->timestamp
);
1692 if (!(data
->o_res
.rflags
& NFS4_OPEN_RESULT_CONFIRM
))
1693 nfs_confirm_seqid(&data
->owner
->so_seqid
, 0);
1698 static void nfs4_open_release(void *calldata
)
1700 struct nfs4_opendata
*data
= calldata
;
1701 struct nfs4_state
*state
= NULL
;
1703 /* If this request hasn't been cancelled, do nothing */
1704 if (data
->cancelled
== 0)
1706 /* In case of error, no cleanup! */
1707 if (data
->rpc_status
!= 0 || !data
->rpc_done
)
1709 /* In case we need an open_confirm, no cleanup! */
1710 if (data
->o_res
.rflags
& NFS4_OPEN_RESULT_CONFIRM
)
1712 state
= nfs4_opendata_to_nfs4_state(data
);
1714 nfs4_close_state(state
, data
->o_arg
.fmode
);
1716 nfs4_opendata_put(data
);
1719 static const struct rpc_call_ops nfs4_open_ops
= {
1720 .rpc_call_prepare
= nfs4_open_prepare
,
1721 .rpc_call_done
= nfs4_open_done
,
1722 .rpc_release
= nfs4_open_release
,
1725 static int nfs4_run_open_task(struct nfs4_opendata
*data
, int isrecover
)
1727 struct inode
*dir
= data
->dir
->d_inode
;
1728 struct nfs_server
*server
= NFS_SERVER(dir
);
1729 struct nfs_openargs
*o_arg
= &data
->o_arg
;
1730 struct nfs_openres
*o_res
= &data
->o_res
;
1731 struct rpc_task
*task
;
1732 struct rpc_message msg
= {
1733 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_OPEN
],
1736 .rpc_cred
= data
->owner
->so_cred
,
1738 struct rpc_task_setup task_setup_data
= {
1739 .rpc_client
= server
->client
,
1740 .rpc_message
= &msg
,
1741 .callback_ops
= &nfs4_open_ops
,
1742 .callback_data
= data
,
1743 .workqueue
= nfsiod_workqueue
,
1744 .flags
= RPC_TASK_ASYNC
,
1748 nfs41_init_sequence(&o_arg
->seq_args
, &o_res
->seq_res
, 1);
1749 kref_get(&data
->kref
);
1751 data
->rpc_status
= 0;
1752 data
->cancelled
= 0;
1753 data
->is_recover
= 0;
1755 nfs4_set_sequence_privileged(&o_arg
->seq_args
);
1756 data
->is_recover
= 1;
1758 task
= rpc_run_task(&task_setup_data
);
1760 return PTR_ERR(task
);
1761 status
= nfs4_wait_for_completion_rpc_task(task
);
1763 data
->cancelled
= 1;
1766 status
= data
->rpc_status
;
1772 static int _nfs4_recover_proc_open(struct nfs4_opendata
*data
)
1774 struct inode
*dir
= data
->dir
->d_inode
;
1775 struct nfs_openres
*o_res
= &data
->o_res
;
1778 status
= nfs4_run_open_task(data
, 1);
1779 if (status
!= 0 || !data
->rpc_done
)
1782 nfs_fattr_map_and_free_names(NFS_SERVER(dir
), &data
->f_attr
);
1784 if (o_res
->rflags
& NFS4_OPEN_RESULT_CONFIRM
) {
1785 status
= _nfs4_proc_open_confirm(data
);
1793 static int nfs4_opendata_access(struct rpc_cred
*cred
,
1794 struct nfs4_opendata
*opendata
,
1795 struct nfs4_state
*state
, fmode_t fmode
,
1798 struct nfs_access_entry cache
;
1801 /* access call failed or for some reason the server doesn't
1802 * support any access modes -- defer access call until later */
1803 if (opendata
->o_res
.access_supported
== 0)
1807 /* don't check MAY_WRITE - a newly created file may not have
1808 * write mode bits, but POSIX allows the creating process to write.
1809 * use openflags to check for exec, because fmode won't
1810 * always have FMODE_EXEC set when file open for exec. */
1811 if (openflags
& __FMODE_EXEC
) {
1812 /* ONLY check for exec rights */
1814 } else if (fmode
& FMODE_READ
)
1818 cache
.jiffies
= jiffies
;
1819 nfs_access_set_mask(&cache
, opendata
->o_res
.access_result
);
1820 nfs_access_add_cache(state
->inode
, &cache
);
1822 if ((mask
& ~cache
.mask
& (MAY_READ
| MAY_EXEC
)) == 0)
1825 /* even though OPEN succeeded, access is denied. Close the file */
1826 nfs4_close_state(state
, fmode
);
1831 * Note: On error, nfs4_proc_open will free the struct nfs4_opendata
1833 static int _nfs4_proc_open(struct nfs4_opendata
*data
)
1835 struct inode
*dir
= data
->dir
->d_inode
;
1836 struct nfs_server
*server
= NFS_SERVER(dir
);
1837 struct nfs_openargs
*o_arg
= &data
->o_arg
;
1838 struct nfs_openres
*o_res
= &data
->o_res
;
1841 status
= nfs4_run_open_task(data
, 0);
1842 if (!data
->rpc_done
)
1845 if (status
== -NFS4ERR_BADNAME
&&
1846 !(o_arg
->open_flags
& O_CREAT
))
1851 nfs_fattr_map_and_free_names(server
, &data
->f_attr
);
1853 if (o_arg
->open_flags
& O_CREAT
)
1854 update_changeattr(dir
, &o_res
->cinfo
);
1855 if ((o_res
->rflags
& NFS4_OPEN_RESULT_LOCKTYPE_POSIX
) == 0)
1856 server
->caps
&= ~NFS_CAP_POSIX_LOCK
;
1857 if(o_res
->rflags
& NFS4_OPEN_RESULT_CONFIRM
) {
1858 status
= _nfs4_proc_open_confirm(data
);
1862 if (!(o_res
->f_attr
->valid
& NFS_ATTR_FATTR
))
1863 _nfs4_proc_getattr(server
, &o_res
->fh
, o_res
->f_attr
, o_res
->f_label
);
1867 static int nfs4_recover_expired_lease(struct nfs_server
*server
)
1869 return nfs4_client_recover_expired_lease(server
->nfs_client
);
1874 * reclaim state on the server after a network partition.
1875 * Assumes caller holds the appropriate lock
1877 static int _nfs4_open_expired(struct nfs_open_context
*ctx
, struct nfs4_state
*state
)
1879 struct nfs4_opendata
*opendata
;
1882 opendata
= nfs4_open_recoverdata_alloc(ctx
, state
,
1883 NFS4_OPEN_CLAIM_FH
);
1884 if (IS_ERR(opendata
))
1885 return PTR_ERR(opendata
);
1886 ret
= nfs4_open_recover(opendata
, state
);
1888 d_drop(ctx
->dentry
);
1889 nfs4_opendata_put(opendata
);
1893 static int nfs4_do_open_expired(struct nfs_open_context
*ctx
, struct nfs4_state
*state
)
1895 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
1896 struct nfs4_exception exception
= { };
1900 err
= _nfs4_open_expired(ctx
, state
);
1901 trace_nfs4_open_expired(ctx
, 0, err
);
1902 if (nfs4_clear_cap_atomic_open_v1(server
, err
, &exception
))
1907 case -NFS4ERR_GRACE
:
1908 case -NFS4ERR_DELAY
:
1909 nfs4_handle_exception(server
, err
, &exception
);
1912 } while (exception
.retry
);
1917 static int nfs4_open_expired(struct nfs4_state_owner
*sp
, struct nfs4_state
*state
)
1919 struct nfs_open_context
*ctx
;
1922 ctx
= nfs4_state_find_open_context(state
);
1925 ret
= nfs4_do_open_expired(ctx
, state
);
1926 put_nfs_open_context(ctx
);
1930 #if defined(CONFIG_NFS_V4_1)
1931 static void nfs41_clear_delegation_stateid(struct nfs4_state
*state
)
1933 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
1934 nfs4_stateid
*stateid
= &state
->stateid
;
1935 struct nfs_delegation
*delegation
;
1936 struct rpc_cred
*cred
= NULL
;
1937 int status
= -NFS4ERR_BAD_STATEID
;
1939 /* If a state reset has been done, test_stateid is unneeded */
1940 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) == 0)
1943 /* Get the delegation credential for use by test/free_stateid */
1945 delegation
= rcu_dereference(NFS_I(state
->inode
)->delegation
);
1946 if (delegation
!= NULL
&&
1947 nfs4_stateid_match(&delegation
->stateid
, stateid
)) {
1948 cred
= get_rpccred(delegation
->cred
);
1950 status
= nfs41_test_stateid(server
, stateid
, cred
);
1954 if (status
!= NFS_OK
) {
1955 /* Free the stateid unless the server explicitly
1956 * informs us the stateid is unrecognized. */
1957 if (status
!= -NFS4ERR_BAD_STATEID
)
1958 nfs41_free_stateid(server
, stateid
, cred
);
1959 nfs_remove_bad_delegation(state
->inode
);
1961 write_seqlock(&state
->seqlock
);
1962 nfs4_stateid_copy(&state
->stateid
, &state
->open_stateid
);
1963 write_sequnlock(&state
->seqlock
);
1964 clear_bit(NFS_DELEGATED_STATE
, &state
->flags
);
1972 * nfs41_check_open_stateid - possibly free an open stateid
1974 * @state: NFSv4 state for an inode
1976 * Returns NFS_OK if recovery for this stateid is now finished.
1977 * Otherwise a negative NFS4ERR value is returned.
1979 static int nfs41_check_open_stateid(struct nfs4_state
*state
)
1981 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
1982 nfs4_stateid
*stateid
= &state
->open_stateid
;
1983 struct rpc_cred
*cred
= state
->owner
->so_cred
;
1986 /* If a state reset has been done, test_stateid is unneeded */
1987 if ((test_bit(NFS_O_RDONLY_STATE
, &state
->flags
) == 0) &&
1988 (test_bit(NFS_O_WRONLY_STATE
, &state
->flags
) == 0) &&
1989 (test_bit(NFS_O_RDWR_STATE
, &state
->flags
) == 0))
1990 return -NFS4ERR_BAD_STATEID
;
1992 status
= nfs41_test_stateid(server
, stateid
, cred
);
1993 if (status
!= NFS_OK
) {
1994 /* Free the stateid unless the server explicitly
1995 * informs us the stateid is unrecognized. */
1996 if (status
!= -NFS4ERR_BAD_STATEID
)
1997 nfs41_free_stateid(server
, stateid
, cred
);
1999 clear_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
2000 clear_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
2001 clear_bit(NFS_O_RDWR_STATE
, &state
->flags
);
2002 clear_bit(NFS_OPEN_STATE
, &state
->flags
);
2007 static int nfs41_open_expired(struct nfs4_state_owner
*sp
, struct nfs4_state
*state
)
2011 nfs41_clear_delegation_stateid(state
);
2012 status
= nfs41_check_open_stateid(state
);
2013 if (status
!= NFS_OK
)
2014 status
= nfs4_open_expired(sp
, state
);
2020 * on an EXCLUSIVE create, the server should send back a bitmask with FATTR4-*
2021 * fields corresponding to attributes that were used to store the verifier.
2022 * Make sure we clobber those fields in the later setattr call
2024 static inline void nfs4_exclusive_attrset(struct nfs4_opendata
*opendata
, struct iattr
*sattr
)
2026 if ((opendata
->o_res
.attrset
[1] & FATTR4_WORD1_TIME_ACCESS
) &&
2027 !(sattr
->ia_valid
& ATTR_ATIME_SET
))
2028 sattr
->ia_valid
|= ATTR_ATIME
;
2030 if ((opendata
->o_res
.attrset
[1] & FATTR4_WORD1_TIME_MODIFY
) &&
2031 !(sattr
->ia_valid
& ATTR_MTIME_SET
))
2032 sattr
->ia_valid
|= ATTR_MTIME
;
2035 static int _nfs4_open_and_get_state(struct nfs4_opendata
*opendata
,
2038 struct nfs_open_context
*ctx
)
2040 struct nfs4_state_owner
*sp
= opendata
->owner
;
2041 struct nfs_server
*server
= sp
->so_server
;
2042 struct dentry
*dentry
;
2043 struct nfs4_state
*state
;
2047 seq
= raw_seqcount_begin(&sp
->so_reclaim_seqcount
);
2049 ret
= _nfs4_proc_open(opendata
);
2053 state
= nfs4_opendata_to_nfs4_state(opendata
);
2054 ret
= PTR_ERR(state
);
2057 if (server
->caps
& NFS_CAP_POSIX_LOCK
)
2058 set_bit(NFS_STATE_POSIX_LOCKS
, &state
->flags
);
2060 dentry
= opendata
->dentry
;
2061 if (dentry
->d_inode
== NULL
) {
2062 /* FIXME: Is this d_drop() ever needed? */
2064 dentry
= d_add_unique(dentry
, igrab(state
->inode
));
2065 if (dentry
== NULL
) {
2066 dentry
= opendata
->dentry
;
2067 } else if (dentry
!= ctx
->dentry
) {
2069 ctx
->dentry
= dget(dentry
);
2071 nfs_set_verifier(dentry
,
2072 nfs_save_change_attribute(opendata
->dir
->d_inode
));
2075 ret
= nfs4_opendata_access(sp
->so_cred
, opendata
, state
, fmode
, flags
);
2080 if (dentry
->d_inode
== state
->inode
) {
2081 nfs_inode_attach_open_context(ctx
);
2082 if (read_seqcount_retry(&sp
->so_reclaim_seqcount
, seq
))
2083 nfs4_schedule_stateid_recovery(server
, state
);
2090 * Returns a referenced nfs4_state
2092 static int _nfs4_do_open(struct inode
*dir
,
2093 struct nfs_open_context
*ctx
,
2095 struct iattr
*sattr
,
2096 struct nfs4_label
*label
)
2098 struct nfs4_state_owner
*sp
;
2099 struct nfs4_state
*state
= NULL
;
2100 struct nfs_server
*server
= NFS_SERVER(dir
);
2101 struct nfs4_opendata
*opendata
;
2102 struct dentry
*dentry
= ctx
->dentry
;
2103 struct rpc_cred
*cred
= ctx
->cred
;
2104 struct nfs4_threshold
**ctx_th
= &ctx
->mdsthreshold
;
2105 fmode_t fmode
= ctx
->mode
& (FMODE_READ
|FMODE_WRITE
|FMODE_EXEC
);
2106 enum open_claim_type4 claim
= NFS4_OPEN_CLAIM_NULL
;
2107 struct nfs4_label
*olabel
= NULL
;
2110 /* Protect against reboot recovery conflicts */
2112 sp
= nfs4_get_state_owner(server
, cred
, GFP_KERNEL
);
2114 dprintk("nfs4_do_open: nfs4_get_state_owner failed!\n");
2117 status
= nfs4_recover_expired_lease(server
);
2119 goto err_put_state_owner
;
2120 if (dentry
->d_inode
!= NULL
)
2121 nfs4_return_incompatible_delegation(dentry
->d_inode
, fmode
);
2123 if (dentry
->d_inode
)
2124 claim
= NFS4_OPEN_CLAIM_FH
;
2125 opendata
= nfs4_opendata_alloc(dentry
, sp
, fmode
, flags
, sattr
,
2126 label
, claim
, GFP_KERNEL
);
2127 if (opendata
== NULL
)
2128 goto err_put_state_owner
;
2131 olabel
= nfs4_label_alloc(server
, GFP_KERNEL
);
2132 if (IS_ERR(olabel
)) {
2133 status
= PTR_ERR(olabel
);
2134 goto err_opendata_put
;
2138 if (ctx_th
&& server
->attr_bitmask
[2] & FATTR4_WORD2_MDSTHRESHOLD
) {
2139 opendata
->f_attr
.mdsthreshold
= pnfs_mdsthreshold_alloc();
2140 if (!opendata
->f_attr
.mdsthreshold
)
2141 goto err_free_label
;
2142 opendata
->o_arg
.open_bitmap
= &nfs4_pnfs_open_bitmap
[0];
2144 if (dentry
->d_inode
!= NULL
)
2145 opendata
->state
= nfs4_get_open_state(dentry
->d_inode
, sp
);
2147 status
= _nfs4_open_and_get_state(opendata
, fmode
, flags
, ctx
);
2149 goto err_free_label
;
2152 if ((opendata
->o_arg
.open_flags
& O_EXCL
) &&
2153 (opendata
->o_arg
.createmode
!= NFS4_CREATE_GUARDED
)) {
2154 nfs4_exclusive_attrset(opendata
, sattr
);
2156 nfs_fattr_init(opendata
->o_res
.f_attr
);
2157 status
= nfs4_do_setattr(state
->inode
, cred
,
2158 opendata
->o_res
.f_attr
, sattr
,
2159 state
, label
, olabel
);
2161 nfs_setattr_update_inode(state
->inode
, sattr
);
2162 nfs_post_op_update_inode(state
->inode
, opendata
->o_res
.f_attr
);
2163 nfs_setsecurity(state
->inode
, opendata
->o_res
.f_attr
, olabel
);
2167 if (pnfs_use_threshold(ctx_th
, opendata
->f_attr
.mdsthreshold
, server
))
2168 *ctx_th
= opendata
->f_attr
.mdsthreshold
;
2170 kfree(opendata
->f_attr
.mdsthreshold
);
2171 opendata
->f_attr
.mdsthreshold
= NULL
;
2173 nfs4_label_free(olabel
);
2175 nfs4_opendata_put(opendata
);
2176 nfs4_put_state_owner(sp
);
2179 nfs4_label_free(olabel
);
2181 kfree(opendata
->f_attr
.mdsthreshold
);
2182 nfs4_opendata_put(opendata
);
2183 err_put_state_owner
:
2184 nfs4_put_state_owner(sp
);
2190 static struct nfs4_state
*nfs4_do_open(struct inode
*dir
,
2191 struct nfs_open_context
*ctx
,
2193 struct iattr
*sattr
,
2194 struct nfs4_label
*label
)
2196 struct nfs_server
*server
= NFS_SERVER(dir
);
2197 struct nfs4_exception exception
= { };
2198 struct nfs4_state
*res
;
2202 status
= _nfs4_do_open(dir
, ctx
, flags
, sattr
, label
);
2204 trace_nfs4_open_file(ctx
, flags
, status
);
2207 /* NOTE: BAD_SEQID means the server and client disagree about the
2208 * book-keeping w.r.t. state-changing operations
2209 * (OPEN/CLOSE/LOCK/LOCKU...)
2210 * It is actually a sign of a bug on the client or on the server.
2212 * If we receive a BAD_SEQID error in the particular case of
2213 * doing an OPEN, we assume that nfs_increment_open_seqid() will
2214 * have unhashed the old state_owner for us, and that we can
2215 * therefore safely retry using a new one. We should still warn
2216 * the user though...
2218 if (status
== -NFS4ERR_BAD_SEQID
) {
2219 pr_warn_ratelimited("NFS: v4 server %s "
2220 " returned a bad sequence-id error!\n",
2221 NFS_SERVER(dir
)->nfs_client
->cl_hostname
);
2222 exception
.retry
= 1;
2226 * BAD_STATEID on OPEN means that the server cancelled our
2227 * state before it received the OPEN_CONFIRM.
2228 * Recover by retrying the request as per the discussion
2229 * on Page 181 of RFC3530.
2231 if (status
== -NFS4ERR_BAD_STATEID
) {
2232 exception
.retry
= 1;
2235 if (status
== -EAGAIN
) {
2236 /* We must have found a delegation */
2237 exception
.retry
= 1;
2240 if (nfs4_clear_cap_atomic_open_v1(server
, status
, &exception
))
2242 res
= ERR_PTR(nfs4_handle_exception(server
,
2243 status
, &exception
));
2244 } while (exception
.retry
);
2248 static int _nfs4_do_setattr(struct inode
*inode
, struct rpc_cred
*cred
,
2249 struct nfs_fattr
*fattr
, struct iattr
*sattr
,
2250 struct nfs4_state
*state
, struct nfs4_label
*ilabel
,
2251 struct nfs4_label
*olabel
)
2253 struct nfs_server
*server
= NFS_SERVER(inode
);
2254 struct nfs_setattrargs arg
= {
2255 .fh
= NFS_FH(inode
),
2258 .bitmask
= server
->attr_bitmask
,
2261 struct nfs_setattrres res
= {
2266 struct rpc_message msg
= {
2267 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETATTR
],
2272 unsigned long timestamp
= jiffies
;
2277 arg
.bitmask
= nfs4_bitmask(server
, ilabel
);
2279 arg
.bitmask
= nfs4_bitmask(server
, olabel
);
2281 nfs_fattr_init(fattr
);
2283 /* Servers should only apply open mode checks for file size changes */
2284 truncate
= (sattr
->ia_valid
& ATTR_SIZE
) ? true : false;
2285 fmode
= truncate
? FMODE_WRITE
: FMODE_READ
;
2287 if (nfs4_copy_delegation_stateid(&arg
.stateid
, inode
, fmode
)) {
2288 /* Use that stateid */
2289 } else if (truncate
&& state
!= NULL
&& nfs4_valid_open_stateid(state
)) {
2290 struct nfs_lockowner lockowner
= {
2291 .l_owner
= current
->files
,
2292 .l_pid
= current
->tgid
,
2294 nfs4_select_rw_stateid(&arg
.stateid
, state
, FMODE_WRITE
,
2297 nfs4_stateid_copy(&arg
.stateid
, &zero_stateid
);
2299 status
= nfs4_call_sync(server
->client
, server
, &msg
, &arg
.seq_args
, &res
.seq_res
, 1);
2300 if (status
== 0 && state
!= NULL
)
2301 renew_lease(server
, timestamp
);
2305 static int nfs4_do_setattr(struct inode
*inode
, struct rpc_cred
*cred
,
2306 struct nfs_fattr
*fattr
, struct iattr
*sattr
,
2307 struct nfs4_state
*state
, struct nfs4_label
*ilabel
,
2308 struct nfs4_label
*olabel
)
2310 struct nfs_server
*server
= NFS_SERVER(inode
);
2311 struct nfs4_exception exception
= {
2317 err
= _nfs4_do_setattr(inode
, cred
, fattr
, sattr
, state
, ilabel
, olabel
);
2319 case -NFS4ERR_OPENMODE
:
2320 if (!(sattr
->ia_valid
& ATTR_SIZE
)) {
2321 pr_warn_once("NFSv4: server %s is incorrectly "
2322 "applying open mode checks to "
2323 "a SETATTR that is not "
2324 "changing file size.\n",
2325 server
->nfs_client
->cl_hostname
);
2327 if (state
&& !(state
->state
& FMODE_WRITE
)) {
2329 if (sattr
->ia_valid
& ATTR_OPEN
)
2334 err
= nfs4_handle_exception(server
, err
, &exception
);
2335 } while (exception
.retry
);
2340 struct nfs4_closedata
{
2341 struct inode
*inode
;
2342 struct nfs4_state
*state
;
2343 struct nfs_closeargs arg
;
2344 struct nfs_closeres res
;
2345 struct nfs_fattr fattr
;
2346 unsigned long timestamp
;
2351 static void nfs4_free_closedata(void *data
)
2353 struct nfs4_closedata
*calldata
= data
;
2354 struct nfs4_state_owner
*sp
= calldata
->state
->owner
;
2355 struct super_block
*sb
= calldata
->state
->inode
->i_sb
;
2358 pnfs_roc_release(calldata
->state
->inode
);
2359 nfs4_put_open_state(calldata
->state
);
2360 nfs_free_seqid(calldata
->arg
.seqid
);
2361 nfs4_put_state_owner(sp
);
2362 nfs_sb_deactive(sb
);
2366 static void nfs4_close_clear_stateid_flags(struct nfs4_state
*state
,
2369 spin_lock(&state
->owner
->so_lock
);
2370 clear_bit(NFS_O_RDWR_STATE
, &state
->flags
);
2371 switch (fmode
& (FMODE_READ
|FMODE_WRITE
)) {
2373 clear_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
2376 clear_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
2379 clear_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
2380 clear_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
2381 clear_bit(NFS_OPEN_STATE
, &state
->flags
);
2383 spin_unlock(&state
->owner
->so_lock
);
2386 static void nfs4_close_done(struct rpc_task
*task
, void *data
)
2388 struct nfs4_closedata
*calldata
= data
;
2389 struct nfs4_state
*state
= calldata
->state
;
2390 struct nfs_server
*server
= NFS_SERVER(calldata
->inode
);
2392 dprintk("%s: begin!\n", __func__
);
2393 if (!nfs4_sequence_done(task
, &calldata
->res
.seq_res
))
2395 trace_nfs4_close(state
, &calldata
->arg
, &calldata
->res
, task
->tk_status
);
2396 /* hmm. we are done with the inode, and in the process of freeing
2397 * the state_owner. we keep this around to process errors
2399 switch (task
->tk_status
) {
2402 pnfs_roc_set_barrier(state
->inode
,
2403 calldata
->roc_barrier
);
2404 nfs_set_open_stateid(state
, &calldata
->res
.stateid
, 0);
2405 renew_lease(server
, calldata
->timestamp
);
2406 nfs4_close_clear_stateid_flags(state
,
2407 calldata
->arg
.fmode
);
2409 case -NFS4ERR_STALE_STATEID
:
2410 case -NFS4ERR_OLD_STATEID
:
2411 case -NFS4ERR_BAD_STATEID
:
2412 case -NFS4ERR_EXPIRED
:
2413 if (calldata
->arg
.fmode
== 0)
2416 if (nfs4_async_handle_error(task
, server
, state
) == -EAGAIN
)
2417 rpc_restart_call_prepare(task
);
2419 nfs_release_seqid(calldata
->arg
.seqid
);
2420 nfs_refresh_inode(calldata
->inode
, calldata
->res
.fattr
);
2421 dprintk("%s: done, ret = %d!\n", __func__
, task
->tk_status
);
2424 static void nfs4_close_prepare(struct rpc_task
*task
, void *data
)
2426 struct nfs4_closedata
*calldata
= data
;
2427 struct nfs4_state
*state
= calldata
->state
;
2428 struct inode
*inode
= calldata
->inode
;
2431 dprintk("%s: begin!\n", __func__
);
2432 if (nfs_wait_on_sequence(calldata
->arg
.seqid
, task
) != 0)
2435 task
->tk_msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_OPEN_DOWNGRADE
];
2436 calldata
->arg
.fmode
= FMODE_READ
|FMODE_WRITE
;
2437 spin_lock(&state
->owner
->so_lock
);
2438 /* Calculate the change in open mode */
2439 if (state
->n_rdwr
== 0) {
2440 if (state
->n_rdonly
== 0) {
2441 call_close
|= test_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
2442 call_close
|= test_bit(NFS_O_RDWR_STATE
, &state
->flags
);
2443 calldata
->arg
.fmode
&= ~FMODE_READ
;
2445 if (state
->n_wronly
== 0) {
2446 call_close
|= test_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
2447 call_close
|= test_bit(NFS_O_RDWR_STATE
, &state
->flags
);
2448 calldata
->arg
.fmode
&= ~FMODE_WRITE
;
2451 if (!nfs4_valid_open_stateid(state
))
2453 spin_unlock(&state
->owner
->so_lock
);
2456 /* Note: exit _without_ calling nfs4_close_done */
2460 if (calldata
->arg
.fmode
== 0) {
2461 task
->tk_msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_CLOSE
];
2462 if (calldata
->roc
&&
2463 pnfs_roc_drain(inode
, &calldata
->roc_barrier
, task
)) {
2464 nfs_release_seqid(calldata
->arg
.seqid
);
2469 nfs_fattr_init(calldata
->res
.fattr
);
2470 calldata
->timestamp
= jiffies
;
2471 if (nfs4_setup_sequence(NFS_SERVER(inode
),
2472 &calldata
->arg
.seq_args
,
2473 &calldata
->res
.seq_res
,
2475 nfs_release_seqid(calldata
->arg
.seqid
);
2476 dprintk("%s: done!\n", __func__
);
2479 task
->tk_action
= NULL
;
2481 nfs4_sequence_done(task
, &calldata
->res
.seq_res
);
2484 static const struct rpc_call_ops nfs4_close_ops
= {
2485 .rpc_call_prepare
= nfs4_close_prepare
,
2486 .rpc_call_done
= nfs4_close_done
,
2487 .rpc_release
= nfs4_free_closedata
,
2491 * It is possible for data to be read/written from a mem-mapped file
2492 * after the sys_close call (which hits the vfs layer as a flush).
2493 * This means that we can't safely call nfsv4 close on a file until
2494 * the inode is cleared. This in turn means that we are not good
2495 * NFSv4 citizens - we do not indicate to the server to update the file's
2496 * share state even when we are done with one of the three share
2497 * stateid's in the inode.
2499 * NOTE: Caller must be holding the sp->so_owner semaphore!
2501 int nfs4_do_close(struct nfs4_state
*state
, gfp_t gfp_mask
, int wait
)
2503 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
2504 struct nfs4_closedata
*calldata
;
2505 struct nfs4_state_owner
*sp
= state
->owner
;
2506 struct rpc_task
*task
;
2507 struct rpc_message msg
= {
2508 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_CLOSE
],
2509 .rpc_cred
= state
->owner
->so_cred
,
2511 struct rpc_task_setup task_setup_data
= {
2512 .rpc_client
= server
->client
,
2513 .rpc_message
= &msg
,
2514 .callback_ops
= &nfs4_close_ops
,
2515 .workqueue
= nfsiod_workqueue
,
2516 .flags
= RPC_TASK_ASYNC
,
2518 int status
= -ENOMEM
;
2520 calldata
= kzalloc(sizeof(*calldata
), gfp_mask
);
2521 if (calldata
== NULL
)
2523 nfs41_init_sequence(&calldata
->arg
.seq_args
, &calldata
->res
.seq_res
, 1);
2524 calldata
->inode
= state
->inode
;
2525 calldata
->state
= state
;
2526 calldata
->arg
.fh
= NFS_FH(state
->inode
);
2527 calldata
->arg
.stateid
= &state
->open_stateid
;
2528 /* Serialization for the sequence id */
2529 calldata
->arg
.seqid
= nfs_alloc_seqid(&state
->owner
->so_seqid
, gfp_mask
);
2530 if (calldata
->arg
.seqid
== NULL
)
2531 goto out_free_calldata
;
2532 calldata
->arg
.fmode
= 0;
2533 calldata
->arg
.bitmask
= server
->cache_consistency_bitmask
;
2534 calldata
->res
.fattr
= &calldata
->fattr
;
2535 calldata
->res
.seqid
= calldata
->arg
.seqid
;
2536 calldata
->res
.server
= server
;
2537 calldata
->roc
= pnfs_roc(state
->inode
);
2538 nfs_sb_active(calldata
->inode
->i_sb
);
2540 msg
.rpc_argp
= &calldata
->arg
;
2541 msg
.rpc_resp
= &calldata
->res
;
2542 task_setup_data
.callback_data
= calldata
;
2543 task
= rpc_run_task(&task_setup_data
);
2545 return PTR_ERR(task
);
2548 status
= rpc_wait_for_completion_task(task
);
2554 nfs4_put_open_state(state
);
2555 nfs4_put_state_owner(sp
);
2559 static struct inode
*
2560 nfs4_atomic_open(struct inode
*dir
, struct nfs_open_context
*ctx
, int open_flags
, struct iattr
*attr
)
2562 struct nfs4_state
*state
;
2563 struct nfs4_label l
= {0, 0, 0, NULL
}, *label
= NULL
;
2565 label
= nfs4_label_init_security(dir
, ctx
->dentry
, attr
, &l
);
2567 /* Protect against concurrent sillydeletes */
2568 state
= nfs4_do_open(dir
, ctx
, open_flags
, attr
, label
);
2570 nfs4_label_release_security(label
);
2573 return ERR_CAST(state
);
2574 return state
->inode
;
2577 static void nfs4_close_context(struct nfs_open_context
*ctx
, int is_sync
)
2579 if (ctx
->state
== NULL
)
2582 nfs4_close_sync(ctx
->state
, ctx
->mode
);
2584 nfs4_close_state(ctx
->state
, ctx
->mode
);
2587 static int _nfs4_server_capabilities(struct nfs_server
*server
, struct nfs_fh
*fhandle
)
2589 struct nfs4_server_caps_arg args
= {
2592 struct nfs4_server_caps_res res
= {};
2593 struct rpc_message msg
= {
2594 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SERVER_CAPS
],
2600 status
= nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
2602 memcpy(server
->attr_bitmask
, res
.attr_bitmask
, sizeof(server
->attr_bitmask
));
2603 server
->caps
&= ~(NFS_CAP_ACLS
|NFS_CAP_HARDLINKS
|
2604 NFS_CAP_SYMLINKS
|NFS_CAP_FILEID
|
2605 NFS_CAP_MODE
|NFS_CAP_NLINK
|NFS_CAP_OWNER
|
2606 NFS_CAP_OWNER_GROUP
|NFS_CAP_ATIME
|
2607 NFS_CAP_CTIME
|NFS_CAP_MTIME
);
2608 if (res
.attr_bitmask
[0] & FATTR4_WORD0_ACL
)
2609 server
->caps
|= NFS_CAP_ACLS
;
2610 if (res
.has_links
!= 0)
2611 server
->caps
|= NFS_CAP_HARDLINKS
;
2612 if (res
.has_symlinks
!= 0)
2613 server
->caps
|= NFS_CAP_SYMLINKS
;
2614 if (res
.attr_bitmask
[0] & FATTR4_WORD0_FILEID
)
2615 server
->caps
|= NFS_CAP_FILEID
;
2616 if (res
.attr_bitmask
[1] & FATTR4_WORD1_MODE
)
2617 server
->caps
|= NFS_CAP_MODE
;
2618 if (res
.attr_bitmask
[1] & FATTR4_WORD1_NUMLINKS
)
2619 server
->caps
|= NFS_CAP_NLINK
;
2620 if (res
.attr_bitmask
[1] & FATTR4_WORD1_OWNER
)
2621 server
->caps
|= NFS_CAP_OWNER
;
2622 if (res
.attr_bitmask
[1] & FATTR4_WORD1_OWNER_GROUP
)
2623 server
->caps
|= NFS_CAP_OWNER_GROUP
;
2624 if (res
.attr_bitmask
[1] & FATTR4_WORD1_TIME_ACCESS
)
2625 server
->caps
|= NFS_CAP_ATIME
;
2626 if (res
.attr_bitmask
[1] & FATTR4_WORD1_TIME_METADATA
)
2627 server
->caps
|= NFS_CAP_CTIME
;
2628 if (res
.attr_bitmask
[1] & FATTR4_WORD1_TIME_MODIFY
)
2629 server
->caps
|= NFS_CAP_MTIME
;
2630 #ifdef CONFIG_NFS_V4_SECURITY_LABEL
2631 if (res
.attr_bitmask
[2] & FATTR4_WORD2_SECURITY_LABEL
)
2632 server
->caps
|= NFS_CAP_SECURITY_LABEL
;
2634 memcpy(server
->attr_bitmask_nl
, res
.attr_bitmask
,
2635 sizeof(server
->attr_bitmask
));
2637 if (server
->caps
& NFS_CAP_SECURITY_LABEL
) {
2638 server
->attr_bitmask_nl
[2] &= ~FATTR4_WORD2_SECURITY_LABEL
;
2639 res
.attr_bitmask
[2] &= ~FATTR4_WORD2_SECURITY_LABEL
;
2641 memcpy(server
->cache_consistency_bitmask
, res
.attr_bitmask
, sizeof(server
->cache_consistency_bitmask
));
2642 server
->cache_consistency_bitmask
[0] &= FATTR4_WORD0_CHANGE
|FATTR4_WORD0_SIZE
;
2643 server
->cache_consistency_bitmask
[1] &= FATTR4_WORD1_TIME_METADATA
|FATTR4_WORD1_TIME_MODIFY
;
2644 server
->acl_bitmask
= res
.acl_bitmask
;
2645 server
->fh_expire_type
= res
.fh_expire_type
;
2651 int nfs4_server_capabilities(struct nfs_server
*server
, struct nfs_fh
*fhandle
)
2653 struct nfs4_exception exception
= { };
2656 err
= nfs4_handle_exception(server
,
2657 _nfs4_server_capabilities(server
, fhandle
),
2659 } while (exception
.retry
);
2663 static int _nfs4_lookup_root(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
2664 struct nfs_fsinfo
*info
)
2667 struct nfs4_lookup_root_arg args
= {
2670 struct nfs4_lookup_res res
= {
2672 .fattr
= info
->fattr
,
2675 struct rpc_message msg
= {
2676 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOOKUP_ROOT
],
2681 bitmask
[0] = nfs4_fattr_bitmap
[0];
2682 bitmask
[1] = nfs4_fattr_bitmap
[1];
2684 * Process the label in the upcoming getfattr
2686 bitmask
[2] = nfs4_fattr_bitmap
[2] & ~FATTR4_WORD2_SECURITY_LABEL
;
2688 nfs_fattr_init(info
->fattr
);
2689 return nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
2692 static int nfs4_lookup_root(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
2693 struct nfs_fsinfo
*info
)
2695 struct nfs4_exception exception
= { };
2698 err
= _nfs4_lookup_root(server
, fhandle
, info
);
2701 case -NFS4ERR_WRONGSEC
:
2704 err
= nfs4_handle_exception(server
, err
, &exception
);
2706 } while (exception
.retry
);
2711 static int nfs4_lookup_root_sec(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
2712 struct nfs_fsinfo
*info
, rpc_authflavor_t flavor
)
2714 struct rpc_auth
*auth
;
2717 auth
= rpcauth_create(flavor
, server
->client
);
2722 ret
= nfs4_lookup_root(server
, fhandle
, info
);
2728 * Retry pseudoroot lookup with various security flavors. We do this when:
2730 * NFSv4.0: the PUTROOTFH operation returns NFS4ERR_WRONGSEC
2731 * NFSv4.1: the server does not support the SECINFO_NO_NAME operation
2733 * Returns zero on success, or a negative NFS4ERR value, or a
2734 * negative errno value.
2736 static int nfs4_find_root_sec(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
2737 struct nfs_fsinfo
*info
)
2739 /* Per 3530bis 15.33.5 */
2740 static const rpc_authflavor_t flav_array
[] = {
2744 RPC_AUTH_UNIX
, /* courtesy */
2747 int status
= -EPERM
;
2750 for (i
= 0; i
< ARRAY_SIZE(flav_array
); i
++) {
2751 status
= nfs4_lookup_root_sec(server
, fhandle
, info
, flav_array
[i
]);
2752 if (status
== -NFS4ERR_WRONGSEC
|| status
== -EACCES
)
2758 * -EACCESS could mean that the user doesn't have correct permissions
2759 * to access the mount. It could also mean that we tried to mount
2760 * with a gss auth flavor, but rpc.gssd isn't running. Either way,
2761 * existing mount programs don't handle -EACCES very well so it should
2762 * be mapped to -EPERM instead.
2764 if (status
== -EACCES
)
2769 static int nfs4_do_find_root_sec(struct nfs_server
*server
,
2770 struct nfs_fh
*fhandle
, struct nfs_fsinfo
*info
)
2772 int mv
= server
->nfs_client
->cl_minorversion
;
2773 return nfs_v4_minor_ops
[mv
]->find_root_sec(server
, fhandle
, info
);
2777 * nfs4_proc_get_rootfh - get file handle for server's pseudoroot
2778 * @server: initialized nfs_server handle
2779 * @fhandle: we fill in the pseudo-fs root file handle
2780 * @info: we fill in an FSINFO struct
2782 * Returns zero on success, or a negative errno.
2784 int nfs4_proc_get_rootfh(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
2785 struct nfs_fsinfo
*info
)
2789 status
= nfs4_lookup_root(server
, fhandle
, info
);
2790 if ((status
== -NFS4ERR_WRONGSEC
) &&
2791 !(server
->flags
& NFS_MOUNT_SECFLAVOUR
))
2792 status
= nfs4_do_find_root_sec(server
, fhandle
, info
);
2795 status
= nfs4_server_capabilities(server
, fhandle
);
2797 status
= nfs4_do_fsinfo(server
, fhandle
, info
);
2799 return nfs4_map_errors(status
);
2802 static int nfs4_proc_get_root(struct nfs_server
*server
, struct nfs_fh
*mntfh
,
2803 struct nfs_fsinfo
*info
)
2806 struct nfs_fattr
*fattr
= info
->fattr
;
2807 struct nfs4_label
*label
= NULL
;
2809 error
= nfs4_server_capabilities(server
, mntfh
);
2811 dprintk("nfs4_get_root: getcaps error = %d\n", -error
);
2815 label
= nfs4_label_alloc(server
, GFP_KERNEL
);
2817 return PTR_ERR(label
);
2819 error
= nfs4_proc_getattr(server
, mntfh
, fattr
, label
);
2821 dprintk("nfs4_get_root: getattr error = %d\n", -error
);
2822 goto err_free_label
;
2825 if (fattr
->valid
& NFS_ATTR_FATTR_FSID
&&
2826 !nfs_fsid_equal(&server
->fsid
, &fattr
->fsid
))
2827 memcpy(&server
->fsid
, &fattr
->fsid
, sizeof(server
->fsid
));
2830 nfs4_label_free(label
);
2836 * Get locations and (maybe) other attributes of a referral.
2837 * Note that we'll actually follow the referral later when
2838 * we detect fsid mismatch in inode revalidation
2840 static int nfs4_get_referral(struct rpc_clnt
*client
, struct inode
*dir
,
2841 const struct qstr
*name
, struct nfs_fattr
*fattr
,
2842 struct nfs_fh
*fhandle
)
2844 int status
= -ENOMEM
;
2845 struct page
*page
= NULL
;
2846 struct nfs4_fs_locations
*locations
= NULL
;
2848 page
= alloc_page(GFP_KERNEL
);
2851 locations
= kmalloc(sizeof(struct nfs4_fs_locations
), GFP_KERNEL
);
2852 if (locations
== NULL
)
2855 status
= nfs4_proc_fs_locations(client
, dir
, name
, locations
, page
);
2858 /* Make sure server returned a different fsid for the referral */
2859 if (nfs_fsid_equal(&NFS_SERVER(dir
)->fsid
, &locations
->fattr
.fsid
)) {
2860 dprintk("%s: server did not return a different fsid for"
2861 " a referral at %s\n", __func__
, name
->name
);
2865 /* Fixup attributes for the nfs_lookup() call to nfs_fhget() */
2866 nfs_fixup_referral_attributes(&locations
->fattr
);
2868 /* replace the lookup nfs_fattr with the locations nfs_fattr */
2869 memcpy(fattr
, &locations
->fattr
, sizeof(struct nfs_fattr
));
2870 memset(fhandle
, 0, sizeof(struct nfs_fh
));
2878 static int _nfs4_proc_getattr(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
2879 struct nfs_fattr
*fattr
, struct nfs4_label
*label
)
2881 struct nfs4_getattr_arg args
= {
2883 .bitmask
= server
->attr_bitmask
,
2885 struct nfs4_getattr_res res
= {
2890 struct rpc_message msg
= {
2891 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GETATTR
],
2896 args
.bitmask
= nfs4_bitmask(server
, label
);
2898 nfs_fattr_init(fattr
);
2899 return nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
2902 static int nfs4_proc_getattr(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
2903 struct nfs_fattr
*fattr
, struct nfs4_label
*label
)
2905 struct nfs4_exception exception
= { };
2908 err
= nfs4_handle_exception(server
,
2909 _nfs4_proc_getattr(server
, fhandle
, fattr
, label
),
2911 } while (exception
.retry
);
2916 * The file is not closed if it is opened due to the a request to change
2917 * the size of the file. The open call will not be needed once the
2918 * VFS layer lookup-intents are implemented.
2920 * Close is called when the inode is destroyed.
2921 * If we haven't opened the file for O_WRONLY, we
2922 * need to in the size_change case to obtain a stateid.
2925 * Because OPEN is always done by name in nfsv4, it is
2926 * possible that we opened a different file by the same
2927 * name. We can recognize this race condition, but we
2928 * can't do anything about it besides returning an error.
2930 * This will be fixed with VFS changes (lookup-intent).
2933 nfs4_proc_setattr(struct dentry
*dentry
, struct nfs_fattr
*fattr
,
2934 struct iattr
*sattr
)
2936 struct inode
*inode
= dentry
->d_inode
;
2937 struct rpc_cred
*cred
= NULL
;
2938 struct nfs4_state
*state
= NULL
;
2939 struct nfs4_label
*label
= NULL
;
2942 if (pnfs_ld_layoutret_on_setattr(inode
))
2943 pnfs_commit_and_return_layout(inode
);
2945 nfs_fattr_init(fattr
);
2947 /* Deal with open(O_TRUNC) */
2948 if (sattr
->ia_valid
& ATTR_OPEN
)
2949 sattr
->ia_valid
&= ~(ATTR_MTIME
|ATTR_CTIME
);
2951 /* Optimization: if the end result is no change, don't RPC */
2952 if ((sattr
->ia_valid
& ~(ATTR_FILE
|ATTR_OPEN
)) == 0)
2955 /* Search for an existing open(O_WRITE) file */
2956 if (sattr
->ia_valid
& ATTR_FILE
) {
2957 struct nfs_open_context
*ctx
;
2959 ctx
= nfs_file_open_context(sattr
->ia_file
);
2966 label
= nfs4_label_alloc(NFS_SERVER(inode
), GFP_KERNEL
);
2968 return PTR_ERR(label
);
2970 status
= nfs4_do_setattr(inode
, cred
, fattr
, sattr
, state
, NULL
, label
);
2972 nfs_setattr_update_inode(inode
, sattr
);
2973 nfs_setsecurity(inode
, fattr
, label
);
2975 nfs4_label_free(label
);
2979 static int _nfs4_proc_lookup(struct rpc_clnt
*clnt
, struct inode
*dir
,
2980 const struct qstr
*name
, struct nfs_fh
*fhandle
,
2981 struct nfs_fattr
*fattr
, struct nfs4_label
*label
)
2983 struct nfs_server
*server
= NFS_SERVER(dir
);
2985 struct nfs4_lookup_arg args
= {
2986 .bitmask
= server
->attr_bitmask
,
2987 .dir_fh
= NFS_FH(dir
),
2990 struct nfs4_lookup_res res
= {
2996 struct rpc_message msg
= {
2997 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOOKUP
],
3002 args
.bitmask
= nfs4_bitmask(server
, label
);
3004 nfs_fattr_init(fattr
);
3006 dprintk("NFS call lookup %s\n", name
->name
);
3007 status
= nfs4_call_sync(clnt
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
3008 dprintk("NFS reply lookup: %d\n", status
);
3012 static void nfs_fixup_secinfo_attributes(struct nfs_fattr
*fattr
)
3014 fattr
->valid
|= NFS_ATTR_FATTR_TYPE
| NFS_ATTR_FATTR_MODE
|
3015 NFS_ATTR_FATTR_NLINK
| NFS_ATTR_FATTR_MOUNTPOINT
;
3016 fattr
->mode
= S_IFDIR
| S_IRUGO
| S_IXUGO
;
3020 static int nfs4_proc_lookup_common(struct rpc_clnt
**clnt
, struct inode
*dir
,
3021 struct qstr
*name
, struct nfs_fh
*fhandle
,
3022 struct nfs_fattr
*fattr
, struct nfs4_label
*label
)
3024 struct nfs4_exception exception
= { };
3025 struct rpc_clnt
*client
= *clnt
;
3028 err
= _nfs4_proc_lookup(client
, dir
, name
, fhandle
, fattr
, label
);
3030 case -NFS4ERR_BADNAME
:
3033 case -NFS4ERR_MOVED
:
3034 err
= nfs4_get_referral(client
, dir
, name
, fattr
, fhandle
);
3036 case -NFS4ERR_WRONGSEC
:
3038 if (client
!= *clnt
)
3041 client
= nfs4_create_sec_client(client
, dir
, name
);
3043 return PTR_ERR(client
);
3045 exception
.retry
= 1;
3048 err
= nfs4_handle_exception(NFS_SERVER(dir
), err
, &exception
);
3050 } while (exception
.retry
);
3055 else if (client
!= *clnt
)
3056 rpc_shutdown_client(client
);
3061 static int nfs4_proc_lookup(struct inode
*dir
, struct qstr
*name
,
3062 struct nfs_fh
*fhandle
, struct nfs_fattr
*fattr
,
3063 struct nfs4_label
*label
)
3066 struct rpc_clnt
*client
= NFS_CLIENT(dir
);
3068 status
= nfs4_proc_lookup_common(&client
, dir
, name
, fhandle
, fattr
, label
);
3069 if (client
!= NFS_CLIENT(dir
)) {
3070 rpc_shutdown_client(client
);
3071 nfs_fixup_secinfo_attributes(fattr
);
3077 nfs4_proc_lookup_mountpoint(struct inode
*dir
, struct qstr
*name
,
3078 struct nfs_fh
*fhandle
, struct nfs_fattr
*fattr
)
3081 struct rpc_clnt
*client
= rpc_clone_client(NFS_CLIENT(dir
));
3083 status
= nfs4_proc_lookup_common(&client
, dir
, name
, fhandle
, fattr
, NULL
);
3085 rpc_shutdown_client(client
);
3086 return ERR_PTR(status
);
3091 static int _nfs4_proc_access(struct inode
*inode
, struct nfs_access_entry
*entry
)
3093 struct nfs_server
*server
= NFS_SERVER(inode
);
3094 struct nfs4_accessargs args
= {
3095 .fh
= NFS_FH(inode
),
3096 .bitmask
= server
->cache_consistency_bitmask
,
3098 struct nfs4_accessres res
= {
3101 struct rpc_message msg
= {
3102 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_ACCESS
],
3105 .rpc_cred
= entry
->cred
,
3107 int mode
= entry
->mask
;
3111 * Determine which access bits we want to ask for...
3113 if (mode
& MAY_READ
)
3114 args
.access
|= NFS4_ACCESS_READ
;
3115 if (S_ISDIR(inode
->i_mode
)) {
3116 if (mode
& MAY_WRITE
)
3117 args
.access
|= NFS4_ACCESS_MODIFY
| NFS4_ACCESS_EXTEND
| NFS4_ACCESS_DELETE
;
3118 if (mode
& MAY_EXEC
)
3119 args
.access
|= NFS4_ACCESS_LOOKUP
;
3121 if (mode
& MAY_WRITE
)
3122 args
.access
|= NFS4_ACCESS_MODIFY
| NFS4_ACCESS_EXTEND
;
3123 if (mode
& MAY_EXEC
)
3124 args
.access
|= NFS4_ACCESS_EXECUTE
;
3127 res
.fattr
= nfs_alloc_fattr();
3128 if (res
.fattr
== NULL
)
3131 status
= nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
3133 nfs_access_set_mask(entry
, res
.access
);
3134 nfs_refresh_inode(inode
, res
.fattr
);
3136 nfs_free_fattr(res
.fattr
);
3140 static int nfs4_proc_access(struct inode
*inode
, struct nfs_access_entry
*entry
)
3142 struct nfs4_exception exception
= { };
3145 err
= nfs4_handle_exception(NFS_SERVER(inode
),
3146 _nfs4_proc_access(inode
, entry
),
3148 } while (exception
.retry
);
3153 * TODO: For the time being, we don't try to get any attributes
3154 * along with any of the zero-copy operations READ, READDIR,
3157 * In the case of the first three, we want to put the GETATTR
3158 * after the read-type operation -- this is because it is hard
3159 * to predict the length of a GETATTR response in v4, and thus
3160 * align the READ data correctly. This means that the GETATTR
3161 * may end up partially falling into the page cache, and we should
3162 * shift it into the 'tail' of the xdr_buf before processing.
3163 * To do this efficiently, we need to know the total length
3164 * of data received, which doesn't seem to be available outside
3167 * In the case of WRITE, we also want to put the GETATTR after
3168 * the operation -- in this case because we want to make sure
3169 * we get the post-operation mtime and size.
3171 * Both of these changes to the XDR layer would in fact be quite
3172 * minor, but I decided to leave them for a subsequent patch.
3174 static int _nfs4_proc_readlink(struct inode
*inode
, struct page
*page
,
3175 unsigned int pgbase
, unsigned int pglen
)
3177 struct nfs4_readlink args
= {
3178 .fh
= NFS_FH(inode
),
3183 struct nfs4_readlink_res res
;
3184 struct rpc_message msg
= {
3185 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_READLINK
],
3190 return nfs4_call_sync(NFS_SERVER(inode
)->client
, NFS_SERVER(inode
), &msg
, &args
.seq_args
, &res
.seq_res
, 0);
3193 static int nfs4_proc_readlink(struct inode
*inode
, struct page
*page
,
3194 unsigned int pgbase
, unsigned int pglen
)
3196 struct nfs4_exception exception
= { };
3199 err
= nfs4_handle_exception(NFS_SERVER(inode
),
3200 _nfs4_proc_readlink(inode
, page
, pgbase
, pglen
),
3202 } while (exception
.retry
);
3207 * This is just for mknod. open(O_CREAT) will always do ->open_context().
3210 nfs4_proc_create(struct inode
*dir
, struct dentry
*dentry
, struct iattr
*sattr
,
3213 struct nfs4_label l
, *ilabel
= NULL
;
3214 struct nfs_open_context
*ctx
;
3215 struct nfs4_state
*state
;
3218 ctx
= alloc_nfs_open_context(dentry
, FMODE_READ
);
3220 return PTR_ERR(ctx
);
3222 ilabel
= nfs4_label_init_security(dir
, dentry
, sattr
, &l
);
3224 sattr
->ia_mode
&= ~current_umask();
3225 state
= nfs4_do_open(dir
, ctx
, flags
, sattr
, ilabel
);
3226 if (IS_ERR(state
)) {
3227 status
= PTR_ERR(state
);
3231 nfs4_label_release_security(ilabel
);
3232 put_nfs_open_context(ctx
);
3236 static int _nfs4_proc_remove(struct inode
*dir
, struct qstr
*name
)
3238 struct nfs_server
*server
= NFS_SERVER(dir
);
3239 struct nfs_removeargs args
= {
3243 struct nfs_removeres res
= {
3246 struct rpc_message msg
= {
3247 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_REMOVE
],
3253 status
= nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 1);
3255 update_changeattr(dir
, &res
.cinfo
);
3259 static int nfs4_proc_remove(struct inode
*dir
, struct qstr
*name
)
3261 struct nfs4_exception exception
= { };
3264 err
= nfs4_handle_exception(NFS_SERVER(dir
),
3265 _nfs4_proc_remove(dir
, name
),
3267 } while (exception
.retry
);
3271 static void nfs4_proc_unlink_setup(struct rpc_message
*msg
, struct inode
*dir
)
3273 struct nfs_server
*server
= NFS_SERVER(dir
);
3274 struct nfs_removeargs
*args
= msg
->rpc_argp
;
3275 struct nfs_removeres
*res
= msg
->rpc_resp
;
3277 res
->server
= server
;
3278 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_REMOVE
];
3279 nfs41_init_sequence(&args
->seq_args
, &res
->seq_res
, 1);
3281 nfs_fattr_init(res
->dir_attr
);
3284 static void nfs4_proc_unlink_rpc_prepare(struct rpc_task
*task
, struct nfs_unlinkdata
*data
)
3286 nfs4_setup_sequence(NFS_SERVER(data
->dir
),
3287 &data
->args
.seq_args
,
3292 static int nfs4_proc_unlink_done(struct rpc_task
*task
, struct inode
*dir
)
3294 struct nfs_removeres
*res
= task
->tk_msg
.rpc_resp
;
3296 if (!nfs4_sequence_done(task
, &res
->seq_res
))
3298 if (nfs4_async_handle_error(task
, res
->server
, NULL
) == -EAGAIN
)
3300 update_changeattr(dir
, &res
->cinfo
);
3304 static void nfs4_proc_rename_setup(struct rpc_message
*msg
, struct inode
*dir
)
3306 struct nfs_server
*server
= NFS_SERVER(dir
);
3307 struct nfs_renameargs
*arg
= msg
->rpc_argp
;
3308 struct nfs_renameres
*res
= msg
->rpc_resp
;
3310 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RENAME
];
3311 res
->server
= server
;
3312 nfs41_init_sequence(&arg
->seq_args
, &res
->seq_res
, 1);
3315 static void nfs4_proc_rename_rpc_prepare(struct rpc_task
*task
, struct nfs_renamedata
*data
)
3317 nfs4_setup_sequence(NFS_SERVER(data
->old_dir
),
3318 &data
->args
.seq_args
,
3323 static int nfs4_proc_rename_done(struct rpc_task
*task
, struct inode
*old_dir
,
3324 struct inode
*new_dir
)
3326 struct nfs_renameres
*res
= task
->tk_msg
.rpc_resp
;
3328 if (!nfs4_sequence_done(task
, &res
->seq_res
))
3330 if (nfs4_async_handle_error(task
, res
->server
, NULL
) == -EAGAIN
)
3333 update_changeattr(old_dir
, &res
->old_cinfo
);
3334 update_changeattr(new_dir
, &res
->new_cinfo
);
3338 static int _nfs4_proc_rename(struct inode
*old_dir
, struct qstr
*old_name
,
3339 struct inode
*new_dir
, struct qstr
*new_name
)
3341 struct nfs_server
*server
= NFS_SERVER(old_dir
);
3342 struct nfs_renameargs arg
= {
3343 .old_dir
= NFS_FH(old_dir
),
3344 .new_dir
= NFS_FH(new_dir
),
3345 .old_name
= old_name
,
3346 .new_name
= new_name
,
3348 struct nfs_renameres res
= {
3351 struct rpc_message msg
= {
3352 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RENAME
],
3356 int status
= -ENOMEM
;
3358 status
= nfs4_call_sync(server
->client
, server
, &msg
, &arg
.seq_args
, &res
.seq_res
, 1);
3360 update_changeattr(old_dir
, &res
.old_cinfo
);
3361 update_changeattr(new_dir
, &res
.new_cinfo
);
3366 static int nfs4_proc_rename(struct inode
*old_dir
, struct qstr
*old_name
,
3367 struct inode
*new_dir
, struct qstr
*new_name
)
3369 struct nfs4_exception exception
= { };
3372 err
= nfs4_handle_exception(NFS_SERVER(old_dir
),
3373 _nfs4_proc_rename(old_dir
, old_name
,
3376 } while (exception
.retry
);
3380 static int _nfs4_proc_link(struct inode
*inode
, struct inode
*dir
, struct qstr
*name
)
3382 struct nfs_server
*server
= NFS_SERVER(inode
);
3383 struct nfs4_link_arg arg
= {
3384 .fh
= NFS_FH(inode
),
3385 .dir_fh
= NFS_FH(dir
),
3387 .bitmask
= server
->attr_bitmask
,
3389 struct nfs4_link_res res
= {
3393 struct rpc_message msg
= {
3394 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LINK
],
3398 int status
= -ENOMEM
;
3400 res
.fattr
= nfs_alloc_fattr();
3401 if (res
.fattr
== NULL
)
3404 res
.label
= nfs4_label_alloc(server
, GFP_KERNEL
);
3405 if (IS_ERR(res
.label
)) {
3406 status
= PTR_ERR(res
.label
);
3409 arg
.bitmask
= nfs4_bitmask(server
, res
.label
);
3411 status
= nfs4_call_sync(server
->client
, server
, &msg
, &arg
.seq_args
, &res
.seq_res
, 1);
3413 update_changeattr(dir
, &res
.cinfo
);
3414 status
= nfs_post_op_update_inode(inode
, res
.fattr
);
3416 nfs_setsecurity(inode
, res
.fattr
, res
.label
);
3420 nfs4_label_free(res
.label
);
3423 nfs_free_fattr(res
.fattr
);
3427 static int nfs4_proc_link(struct inode
*inode
, struct inode
*dir
, struct qstr
*name
)
3429 struct nfs4_exception exception
= { };
3432 err
= nfs4_handle_exception(NFS_SERVER(inode
),
3433 _nfs4_proc_link(inode
, dir
, name
),
3435 } while (exception
.retry
);
3439 struct nfs4_createdata
{
3440 struct rpc_message msg
;
3441 struct nfs4_create_arg arg
;
3442 struct nfs4_create_res res
;
3444 struct nfs_fattr fattr
;
3445 struct nfs4_label
*label
;
3448 static struct nfs4_createdata
*nfs4_alloc_createdata(struct inode
*dir
,
3449 struct qstr
*name
, struct iattr
*sattr
, u32 ftype
)
3451 struct nfs4_createdata
*data
;
3453 data
= kzalloc(sizeof(*data
), GFP_KERNEL
);
3455 struct nfs_server
*server
= NFS_SERVER(dir
);
3457 data
->label
= nfs4_label_alloc(server
, GFP_KERNEL
);
3458 if (IS_ERR(data
->label
))
3461 data
->msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_CREATE
];
3462 data
->msg
.rpc_argp
= &data
->arg
;
3463 data
->msg
.rpc_resp
= &data
->res
;
3464 data
->arg
.dir_fh
= NFS_FH(dir
);
3465 data
->arg
.server
= server
;
3466 data
->arg
.name
= name
;
3467 data
->arg
.attrs
= sattr
;
3468 data
->arg
.ftype
= ftype
;
3469 data
->arg
.bitmask
= nfs4_bitmask(server
, data
->label
);
3470 data
->res
.server
= server
;
3471 data
->res
.fh
= &data
->fh
;
3472 data
->res
.fattr
= &data
->fattr
;
3473 data
->res
.label
= data
->label
;
3474 nfs_fattr_init(data
->res
.fattr
);
3482 static int nfs4_do_create(struct inode
*dir
, struct dentry
*dentry
, struct nfs4_createdata
*data
)
3484 int status
= nfs4_call_sync(NFS_SERVER(dir
)->client
, NFS_SERVER(dir
), &data
->msg
,
3485 &data
->arg
.seq_args
, &data
->res
.seq_res
, 1);
3487 update_changeattr(dir
, &data
->res
.dir_cinfo
);
3488 status
= nfs_instantiate(dentry
, data
->res
.fh
, data
->res
.fattr
, data
->res
.label
);
3493 static void nfs4_free_createdata(struct nfs4_createdata
*data
)
3495 nfs4_label_free(data
->label
);
3499 static int _nfs4_proc_symlink(struct inode
*dir
, struct dentry
*dentry
,
3500 struct page
*page
, unsigned int len
, struct iattr
*sattr
,
3501 struct nfs4_label
*label
)
3503 struct nfs4_createdata
*data
;
3504 int status
= -ENAMETOOLONG
;
3506 if (len
> NFS4_MAXPATHLEN
)
3510 data
= nfs4_alloc_createdata(dir
, &dentry
->d_name
, sattr
, NF4LNK
);
3514 data
->msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SYMLINK
];
3515 data
->arg
.u
.symlink
.pages
= &page
;
3516 data
->arg
.u
.symlink
.len
= len
;
3517 data
->arg
.label
= label
;
3519 status
= nfs4_do_create(dir
, dentry
, data
);
3521 nfs4_free_createdata(data
);
3526 static int nfs4_proc_symlink(struct inode
*dir
, struct dentry
*dentry
,
3527 struct page
*page
, unsigned int len
, struct iattr
*sattr
)
3529 struct nfs4_exception exception
= { };
3530 struct nfs4_label l
, *label
= NULL
;
3533 label
= nfs4_label_init_security(dir
, dentry
, sattr
, &l
);
3536 err
= nfs4_handle_exception(NFS_SERVER(dir
),
3537 _nfs4_proc_symlink(dir
, dentry
, page
,
3540 } while (exception
.retry
);
3542 nfs4_label_release_security(label
);
3546 static int _nfs4_proc_mkdir(struct inode
*dir
, struct dentry
*dentry
,
3547 struct iattr
*sattr
, struct nfs4_label
*label
)
3549 struct nfs4_createdata
*data
;
3550 int status
= -ENOMEM
;
3552 data
= nfs4_alloc_createdata(dir
, &dentry
->d_name
, sattr
, NF4DIR
);
3556 data
->arg
.label
= label
;
3557 status
= nfs4_do_create(dir
, dentry
, data
);
3559 nfs4_free_createdata(data
);
3564 static int nfs4_proc_mkdir(struct inode
*dir
, struct dentry
*dentry
,
3565 struct iattr
*sattr
)
3567 struct nfs4_exception exception
= { };
3568 struct nfs4_label l
, *label
= NULL
;
3571 label
= nfs4_label_init_security(dir
, dentry
, sattr
, &l
);
3573 sattr
->ia_mode
&= ~current_umask();
3575 err
= nfs4_handle_exception(NFS_SERVER(dir
),
3576 _nfs4_proc_mkdir(dir
, dentry
, sattr
, label
),
3578 } while (exception
.retry
);
3579 nfs4_label_release_security(label
);
3584 static int _nfs4_proc_readdir(struct dentry
*dentry
, struct rpc_cred
*cred
,
3585 u64 cookie
, struct page
**pages
, unsigned int count
, int plus
)
3587 struct inode
*dir
= dentry
->d_inode
;
3588 struct nfs4_readdir_arg args
= {
3593 .bitmask
= NFS_SERVER(dentry
->d_inode
)->attr_bitmask
,
3596 struct nfs4_readdir_res res
;
3597 struct rpc_message msg
= {
3598 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_READDIR
],
3605 dprintk("%s: dentry = %s/%s, cookie = %Lu\n", __func__
,
3606 dentry
->d_parent
->d_name
.name
,
3607 dentry
->d_name
.name
,
3608 (unsigned long long)cookie
);
3609 nfs4_setup_readdir(cookie
, NFS_I(dir
)->cookieverf
, dentry
, &args
);
3610 res
.pgbase
= args
.pgbase
;
3611 status
= nfs4_call_sync(NFS_SERVER(dir
)->client
, NFS_SERVER(dir
), &msg
, &args
.seq_args
, &res
.seq_res
, 0);
3613 memcpy(NFS_I(dir
)->cookieverf
, res
.verifier
.data
, NFS4_VERIFIER_SIZE
);
3614 status
+= args
.pgbase
;
3617 nfs_invalidate_atime(dir
);
3619 dprintk("%s: returns %d\n", __func__
, status
);
3623 static int nfs4_proc_readdir(struct dentry
*dentry
, struct rpc_cred
*cred
,
3624 u64 cookie
, struct page
**pages
, unsigned int count
, int plus
)
3626 struct nfs4_exception exception
= { };
3629 err
= nfs4_handle_exception(NFS_SERVER(dentry
->d_inode
),
3630 _nfs4_proc_readdir(dentry
, cred
, cookie
,
3631 pages
, count
, plus
),
3633 } while (exception
.retry
);
3637 static int _nfs4_proc_mknod(struct inode
*dir
, struct dentry
*dentry
,
3638 struct iattr
*sattr
, struct nfs4_label
*label
, dev_t rdev
)
3640 struct nfs4_createdata
*data
;
3641 int mode
= sattr
->ia_mode
;
3642 int status
= -ENOMEM
;
3644 data
= nfs4_alloc_createdata(dir
, &dentry
->d_name
, sattr
, NF4SOCK
);
3649 data
->arg
.ftype
= NF4FIFO
;
3650 else if (S_ISBLK(mode
)) {
3651 data
->arg
.ftype
= NF4BLK
;
3652 data
->arg
.u
.device
.specdata1
= MAJOR(rdev
);
3653 data
->arg
.u
.device
.specdata2
= MINOR(rdev
);
3655 else if (S_ISCHR(mode
)) {
3656 data
->arg
.ftype
= NF4CHR
;
3657 data
->arg
.u
.device
.specdata1
= MAJOR(rdev
);
3658 data
->arg
.u
.device
.specdata2
= MINOR(rdev
);
3659 } else if (!S_ISSOCK(mode
)) {
3664 data
->arg
.label
= label
;
3665 status
= nfs4_do_create(dir
, dentry
, data
);
3667 nfs4_free_createdata(data
);
3672 static int nfs4_proc_mknod(struct inode
*dir
, struct dentry
*dentry
,
3673 struct iattr
*sattr
, dev_t rdev
)
3675 struct nfs4_exception exception
= { };
3676 struct nfs4_label l
, *label
= NULL
;
3679 label
= nfs4_label_init_security(dir
, dentry
, sattr
, &l
);
3681 sattr
->ia_mode
&= ~current_umask();
3683 err
= nfs4_handle_exception(NFS_SERVER(dir
),
3684 _nfs4_proc_mknod(dir
, dentry
, sattr
, label
, rdev
),
3686 } while (exception
.retry
);
3688 nfs4_label_release_security(label
);
3693 static int _nfs4_proc_statfs(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
3694 struct nfs_fsstat
*fsstat
)
3696 struct nfs4_statfs_arg args
= {
3698 .bitmask
= server
->attr_bitmask
,
3700 struct nfs4_statfs_res res
= {
3703 struct rpc_message msg
= {
3704 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_STATFS
],
3709 nfs_fattr_init(fsstat
->fattr
);
3710 return nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
3713 static int nfs4_proc_statfs(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fsstat
*fsstat
)
3715 struct nfs4_exception exception
= { };
3718 err
= nfs4_handle_exception(server
,
3719 _nfs4_proc_statfs(server
, fhandle
, fsstat
),
3721 } while (exception
.retry
);
3725 static int _nfs4_do_fsinfo(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
3726 struct nfs_fsinfo
*fsinfo
)
3728 struct nfs4_fsinfo_arg args
= {
3730 .bitmask
= server
->attr_bitmask
,
3732 struct nfs4_fsinfo_res res
= {
3735 struct rpc_message msg
= {
3736 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_FSINFO
],
3741 return nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
3744 static int nfs4_do_fsinfo(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fsinfo
*fsinfo
)
3746 struct nfs4_exception exception
= { };
3747 unsigned long now
= jiffies
;
3751 err
= _nfs4_do_fsinfo(server
, fhandle
, fsinfo
);
3753 struct nfs_client
*clp
= server
->nfs_client
;
3755 spin_lock(&clp
->cl_lock
);
3756 clp
->cl_lease_time
= fsinfo
->lease_time
* HZ
;
3757 clp
->cl_last_renewal
= now
;
3758 spin_unlock(&clp
->cl_lock
);
3761 err
= nfs4_handle_exception(server
, err
, &exception
);
3762 } while (exception
.retry
);
3766 static int nfs4_proc_fsinfo(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fsinfo
*fsinfo
)
3770 nfs_fattr_init(fsinfo
->fattr
);
3771 error
= nfs4_do_fsinfo(server
, fhandle
, fsinfo
);
3773 /* block layout checks this! */
3774 server
->pnfs_blksize
= fsinfo
->blksize
;
3775 set_pnfs_layoutdriver(server
, fhandle
, fsinfo
->layouttype
);
3781 static int _nfs4_proc_pathconf(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
3782 struct nfs_pathconf
*pathconf
)
3784 struct nfs4_pathconf_arg args
= {
3786 .bitmask
= server
->attr_bitmask
,
3788 struct nfs4_pathconf_res res
= {
3789 .pathconf
= pathconf
,
3791 struct rpc_message msg
= {
3792 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_PATHCONF
],
3797 /* None of the pathconf attributes are mandatory to implement */
3798 if ((args
.bitmask
[0] & nfs4_pathconf_bitmap
[0]) == 0) {
3799 memset(pathconf
, 0, sizeof(*pathconf
));
3803 nfs_fattr_init(pathconf
->fattr
);
3804 return nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
3807 static int nfs4_proc_pathconf(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
3808 struct nfs_pathconf
*pathconf
)
3810 struct nfs4_exception exception
= { };
3814 err
= nfs4_handle_exception(server
,
3815 _nfs4_proc_pathconf(server
, fhandle
, pathconf
),
3817 } while (exception
.retry
);
3821 int nfs4_set_rw_stateid(nfs4_stateid
*stateid
,
3822 const struct nfs_open_context
*ctx
,
3823 const struct nfs_lock_context
*l_ctx
,
3826 const struct nfs_lockowner
*lockowner
= NULL
;
3829 lockowner
= &l_ctx
->lockowner
;
3830 return nfs4_select_rw_stateid(stateid
, ctx
->state
, fmode
, lockowner
);
3832 EXPORT_SYMBOL_GPL(nfs4_set_rw_stateid
);
3834 static bool nfs4_stateid_is_current(nfs4_stateid
*stateid
,
3835 const struct nfs_open_context
*ctx
,
3836 const struct nfs_lock_context
*l_ctx
,
3839 nfs4_stateid current_stateid
;
3841 if (nfs4_set_rw_stateid(¤t_stateid
, ctx
, l_ctx
, fmode
))
3843 return nfs4_stateid_match(stateid
, ¤t_stateid
);
3846 static bool nfs4_error_stateid_expired(int err
)
3849 case -NFS4ERR_DELEG_REVOKED
:
3850 case -NFS4ERR_ADMIN_REVOKED
:
3851 case -NFS4ERR_BAD_STATEID
:
3852 case -NFS4ERR_STALE_STATEID
:
3853 case -NFS4ERR_OLD_STATEID
:
3854 case -NFS4ERR_OPENMODE
:
3855 case -NFS4ERR_EXPIRED
:
3861 void __nfs4_read_done_cb(struct nfs_read_data
*data
)
3863 nfs_invalidate_atime(data
->header
->inode
);
3866 static int nfs4_read_done_cb(struct rpc_task
*task
, struct nfs_read_data
*data
)
3868 struct nfs_server
*server
= NFS_SERVER(data
->header
->inode
);
3870 if (nfs4_async_handle_error(task
, server
, data
->args
.context
->state
) == -EAGAIN
) {
3871 rpc_restart_call_prepare(task
);
3875 __nfs4_read_done_cb(data
);
3876 if (task
->tk_status
> 0)
3877 renew_lease(server
, data
->timestamp
);
3881 static bool nfs4_read_stateid_changed(struct rpc_task
*task
,
3882 struct nfs_readargs
*args
)
3885 if (!nfs4_error_stateid_expired(task
->tk_status
) ||
3886 nfs4_stateid_is_current(&args
->stateid
,
3891 rpc_restart_call_prepare(task
);
3895 static int nfs4_read_done(struct rpc_task
*task
, struct nfs_read_data
*data
)
3898 dprintk("--> %s\n", __func__
);
3900 if (!nfs4_sequence_done(task
, &data
->res
.seq_res
))
3902 if (nfs4_read_stateid_changed(task
, &data
->args
))
3904 return data
->read_done_cb
? data
->read_done_cb(task
, data
) :
3905 nfs4_read_done_cb(task
, data
);
3908 static void nfs4_proc_read_setup(struct nfs_read_data
*data
, struct rpc_message
*msg
)
3910 data
->timestamp
= jiffies
;
3911 data
->read_done_cb
= nfs4_read_done_cb
;
3912 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_READ
];
3913 nfs41_init_sequence(&data
->args
.seq_args
, &data
->res
.seq_res
, 0);
3916 static void nfs4_proc_read_rpc_prepare(struct rpc_task
*task
, struct nfs_read_data
*data
)
3918 if (nfs4_setup_sequence(NFS_SERVER(data
->header
->inode
),
3919 &data
->args
.seq_args
,
3923 nfs4_set_rw_stateid(&data
->args
.stateid
, data
->args
.context
,
3924 data
->args
.lock_context
, FMODE_READ
);
3927 static int nfs4_write_done_cb(struct rpc_task
*task
, struct nfs_write_data
*data
)
3929 struct inode
*inode
= data
->header
->inode
;
3931 if (nfs4_async_handle_error(task
, NFS_SERVER(inode
), data
->args
.context
->state
) == -EAGAIN
) {
3932 rpc_restart_call_prepare(task
);
3935 if (task
->tk_status
>= 0) {
3936 renew_lease(NFS_SERVER(inode
), data
->timestamp
);
3937 nfs_post_op_update_inode_force_wcc(inode
, &data
->fattr
);
3942 static bool nfs4_write_stateid_changed(struct rpc_task
*task
,
3943 struct nfs_writeargs
*args
)
3946 if (!nfs4_error_stateid_expired(task
->tk_status
) ||
3947 nfs4_stateid_is_current(&args
->stateid
,
3952 rpc_restart_call_prepare(task
);
3956 static int nfs4_write_done(struct rpc_task
*task
, struct nfs_write_data
*data
)
3958 if (!nfs4_sequence_done(task
, &data
->res
.seq_res
))
3960 if (nfs4_write_stateid_changed(task
, &data
->args
))
3962 return data
->write_done_cb
? data
->write_done_cb(task
, data
) :
3963 nfs4_write_done_cb(task
, data
);
3967 bool nfs4_write_need_cache_consistency_data(const struct nfs_write_data
*data
)
3969 const struct nfs_pgio_header
*hdr
= data
->header
;
3971 /* Don't request attributes for pNFS or O_DIRECT writes */
3972 if (data
->ds_clp
!= NULL
|| hdr
->dreq
!= NULL
)
3974 /* Otherwise, request attributes if and only if we don't hold
3977 return nfs4_have_delegation(hdr
->inode
, FMODE_READ
) == 0;
3980 static void nfs4_proc_write_setup(struct nfs_write_data
*data
, struct rpc_message
*msg
)
3982 struct nfs_server
*server
= NFS_SERVER(data
->header
->inode
);
3984 if (!nfs4_write_need_cache_consistency_data(data
)) {
3985 data
->args
.bitmask
= NULL
;
3986 data
->res
.fattr
= NULL
;
3988 data
->args
.bitmask
= server
->cache_consistency_bitmask
;
3990 if (!data
->write_done_cb
)
3991 data
->write_done_cb
= nfs4_write_done_cb
;
3992 data
->res
.server
= server
;
3993 data
->timestamp
= jiffies
;
3995 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_WRITE
];
3996 nfs41_init_sequence(&data
->args
.seq_args
, &data
->res
.seq_res
, 1);
3999 static void nfs4_proc_write_rpc_prepare(struct rpc_task
*task
, struct nfs_write_data
*data
)
4001 if (nfs4_setup_sequence(NFS_SERVER(data
->header
->inode
),
4002 &data
->args
.seq_args
,
4006 nfs4_set_rw_stateid(&data
->args
.stateid
, data
->args
.context
,
4007 data
->args
.lock_context
, FMODE_WRITE
);
4010 static void nfs4_proc_commit_rpc_prepare(struct rpc_task
*task
, struct nfs_commit_data
*data
)
4012 nfs4_setup_sequence(NFS_SERVER(data
->inode
),
4013 &data
->args
.seq_args
,
4018 static int nfs4_commit_done_cb(struct rpc_task
*task
, struct nfs_commit_data
*data
)
4020 struct inode
*inode
= data
->inode
;
4022 if (nfs4_async_handle_error(task
, NFS_SERVER(inode
), NULL
) == -EAGAIN
) {
4023 rpc_restart_call_prepare(task
);
4029 static int nfs4_commit_done(struct rpc_task
*task
, struct nfs_commit_data
*data
)
4031 if (!nfs4_sequence_done(task
, &data
->res
.seq_res
))
4033 return data
->commit_done_cb(task
, data
);
4036 static void nfs4_proc_commit_setup(struct nfs_commit_data
*data
, struct rpc_message
*msg
)
4038 struct nfs_server
*server
= NFS_SERVER(data
->inode
);
4040 if (data
->commit_done_cb
== NULL
)
4041 data
->commit_done_cb
= nfs4_commit_done_cb
;
4042 data
->res
.server
= server
;
4043 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_COMMIT
];
4044 nfs41_init_sequence(&data
->args
.seq_args
, &data
->res
.seq_res
, 1);
4047 struct nfs4_renewdata
{
4048 struct nfs_client
*client
;
4049 unsigned long timestamp
;
4053 * nfs4_proc_async_renew(): This is not one of the nfs_rpc_ops; it is a special
4054 * standalone procedure for queueing an asynchronous RENEW.
4056 static void nfs4_renew_release(void *calldata
)
4058 struct nfs4_renewdata
*data
= calldata
;
4059 struct nfs_client
*clp
= data
->client
;
4061 if (atomic_read(&clp
->cl_count
) > 1)
4062 nfs4_schedule_state_renewal(clp
);
4063 nfs_put_client(clp
);
4067 static void nfs4_renew_done(struct rpc_task
*task
, void *calldata
)
4069 struct nfs4_renewdata
*data
= calldata
;
4070 struct nfs_client
*clp
= data
->client
;
4071 unsigned long timestamp
= data
->timestamp
;
4073 trace_nfs4_renew_async(clp
, task
->tk_status
);
4074 if (task
->tk_status
< 0) {
4075 /* Unless we're shutting down, schedule state recovery! */
4076 if (test_bit(NFS_CS_RENEWD
, &clp
->cl_res_state
) == 0)
4078 if (task
->tk_status
!= NFS4ERR_CB_PATH_DOWN
) {
4079 nfs4_schedule_lease_recovery(clp
);
4082 nfs4_schedule_path_down_recovery(clp
);
4084 do_renew_lease(clp
, timestamp
);
4087 static const struct rpc_call_ops nfs4_renew_ops
= {
4088 .rpc_call_done
= nfs4_renew_done
,
4089 .rpc_release
= nfs4_renew_release
,
4092 static int nfs4_proc_async_renew(struct nfs_client
*clp
, struct rpc_cred
*cred
, unsigned renew_flags
)
4094 struct rpc_message msg
= {
4095 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RENEW
],
4099 struct nfs4_renewdata
*data
;
4101 if (renew_flags
== 0)
4103 if (!atomic_inc_not_zero(&clp
->cl_count
))
4105 data
= kmalloc(sizeof(*data
), GFP_NOFS
);
4109 data
->timestamp
= jiffies
;
4110 return rpc_call_async(clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
,
4111 &nfs4_renew_ops
, data
);
4114 static int nfs4_proc_renew(struct nfs_client
*clp
, struct rpc_cred
*cred
)
4116 struct rpc_message msg
= {
4117 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RENEW
],
4121 unsigned long now
= jiffies
;
4124 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
4127 do_renew_lease(clp
, now
);
4131 static inline int nfs4_server_supports_acls(struct nfs_server
*server
)
4133 return (server
->caps
& NFS_CAP_ACLS
)
4134 && (server
->acl_bitmask
& ACL4_SUPPORT_ALLOW_ACL
)
4135 && (server
->acl_bitmask
& ACL4_SUPPORT_DENY_ACL
);
4138 /* Assuming that XATTR_SIZE_MAX is a multiple of PAGE_SIZE, and that
4139 * it's OK to put sizeof(void) * (XATTR_SIZE_MAX/PAGE_SIZE) bytes on
4142 #define NFS4ACL_MAXPAGES DIV_ROUND_UP(XATTR_SIZE_MAX, PAGE_SIZE)
4144 static int buf_to_pages_noslab(const void *buf
, size_t buflen
,
4145 struct page
**pages
, unsigned int *pgbase
)
4147 struct page
*newpage
, **spages
;
4153 len
= min_t(size_t, PAGE_SIZE
, buflen
);
4154 newpage
= alloc_page(GFP_KERNEL
);
4156 if (newpage
== NULL
)
4158 memcpy(page_address(newpage
), buf
, len
);
4163 } while (buflen
!= 0);
4169 __free_page(spages
[rc
-1]);
4173 struct nfs4_cached_acl
{
4179 static void nfs4_set_cached_acl(struct inode
*inode
, struct nfs4_cached_acl
*acl
)
4181 struct nfs_inode
*nfsi
= NFS_I(inode
);
4183 spin_lock(&inode
->i_lock
);
4184 kfree(nfsi
->nfs4_acl
);
4185 nfsi
->nfs4_acl
= acl
;
4186 spin_unlock(&inode
->i_lock
);
4189 static void nfs4_zap_acl_attr(struct inode
*inode
)
4191 nfs4_set_cached_acl(inode
, NULL
);
4194 static inline ssize_t
nfs4_read_cached_acl(struct inode
*inode
, char *buf
, size_t buflen
)
4196 struct nfs_inode
*nfsi
= NFS_I(inode
);
4197 struct nfs4_cached_acl
*acl
;
4200 spin_lock(&inode
->i_lock
);
4201 acl
= nfsi
->nfs4_acl
;
4204 if (buf
== NULL
) /* user is just asking for length */
4206 if (acl
->cached
== 0)
4208 ret
= -ERANGE
; /* see getxattr(2) man page */
4209 if (acl
->len
> buflen
)
4211 memcpy(buf
, acl
->data
, acl
->len
);
4215 spin_unlock(&inode
->i_lock
);
4219 static void nfs4_write_cached_acl(struct inode
*inode
, struct page
**pages
, size_t pgbase
, size_t acl_len
)
4221 struct nfs4_cached_acl
*acl
;
4222 size_t buflen
= sizeof(*acl
) + acl_len
;
4224 if (buflen
<= PAGE_SIZE
) {
4225 acl
= kmalloc(buflen
, GFP_KERNEL
);
4229 _copy_from_pages(acl
->data
, pages
, pgbase
, acl_len
);
4231 acl
= kmalloc(sizeof(*acl
), GFP_KERNEL
);
4238 nfs4_set_cached_acl(inode
, acl
);
4242 * The getxattr API returns the required buffer length when called with a
4243 * NULL buf. The NFSv4 acl tool then calls getxattr again after allocating
4244 * the required buf. On a NULL buf, we send a page of data to the server
4245 * guessing that the ACL request can be serviced by a page. If so, we cache
4246 * up to the page of ACL data, and the 2nd call to getxattr is serviced by
4247 * the cache. If not so, we throw away the page, and cache the required
4248 * length. The next getxattr call will then produce another round trip to
4249 * the server, this time with the input buf of the required size.
4251 static ssize_t
__nfs4_get_acl_uncached(struct inode
*inode
, void *buf
, size_t buflen
)
4253 struct page
*pages
[NFS4ACL_MAXPAGES
] = {NULL
, };
4254 struct nfs_getaclargs args
= {
4255 .fh
= NFS_FH(inode
),
4259 struct nfs_getaclres res
= {
4262 struct rpc_message msg
= {
4263 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GETACL
],
4267 unsigned int npages
= DIV_ROUND_UP(buflen
, PAGE_SIZE
);
4268 int ret
= -ENOMEM
, i
;
4270 /* As long as we're doing a round trip to the server anyway,
4271 * let's be prepared for a page of acl data. */
4274 if (npages
> ARRAY_SIZE(pages
))
4277 for (i
= 0; i
< npages
; i
++) {
4278 pages
[i
] = alloc_page(GFP_KERNEL
);
4283 /* for decoding across pages */
4284 res
.acl_scratch
= alloc_page(GFP_KERNEL
);
4285 if (!res
.acl_scratch
)
4288 args
.acl_len
= npages
* PAGE_SIZE
;
4289 args
.acl_pgbase
= 0;
4291 dprintk("%s buf %p buflen %zu npages %d args.acl_len %zu\n",
4292 __func__
, buf
, buflen
, npages
, args
.acl_len
);
4293 ret
= nfs4_call_sync(NFS_SERVER(inode
)->client
, NFS_SERVER(inode
),
4294 &msg
, &args
.seq_args
, &res
.seq_res
, 0);
4298 /* Handle the case where the passed-in buffer is too short */
4299 if (res
.acl_flags
& NFS4_ACL_TRUNC
) {
4300 /* Did the user only issue a request for the acl length? */
4306 nfs4_write_cached_acl(inode
, pages
, res
.acl_data_offset
, res
.acl_len
);
4308 if (res
.acl_len
> buflen
) {
4312 _copy_from_pages(buf
, pages
, res
.acl_data_offset
, res
.acl_len
);
4317 for (i
= 0; i
< npages
; i
++)
4319 __free_page(pages
[i
]);
4320 if (res
.acl_scratch
)
4321 __free_page(res
.acl_scratch
);
4325 static ssize_t
nfs4_get_acl_uncached(struct inode
*inode
, void *buf
, size_t buflen
)
4327 struct nfs4_exception exception
= { };
4330 ret
= __nfs4_get_acl_uncached(inode
, buf
, buflen
);
4333 ret
= nfs4_handle_exception(NFS_SERVER(inode
), ret
, &exception
);
4334 } while (exception
.retry
);
4338 static ssize_t
nfs4_proc_get_acl(struct inode
*inode
, void *buf
, size_t buflen
)
4340 struct nfs_server
*server
= NFS_SERVER(inode
);
4343 if (!nfs4_server_supports_acls(server
))
4345 ret
= nfs_revalidate_inode(server
, inode
);
4348 if (NFS_I(inode
)->cache_validity
& NFS_INO_INVALID_ACL
)
4349 nfs_zap_acl_cache(inode
);
4350 ret
= nfs4_read_cached_acl(inode
, buf
, buflen
);
4352 /* -ENOENT is returned if there is no ACL or if there is an ACL
4353 * but no cached acl data, just the acl length */
4355 return nfs4_get_acl_uncached(inode
, buf
, buflen
);
4358 static int __nfs4_proc_set_acl(struct inode
*inode
, const void *buf
, size_t buflen
)
4360 struct nfs_server
*server
= NFS_SERVER(inode
);
4361 struct page
*pages
[NFS4ACL_MAXPAGES
];
4362 struct nfs_setaclargs arg
= {
4363 .fh
= NFS_FH(inode
),
4367 struct nfs_setaclres res
;
4368 struct rpc_message msg
= {
4369 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETACL
],
4373 unsigned int npages
= DIV_ROUND_UP(buflen
, PAGE_SIZE
);
4376 if (!nfs4_server_supports_acls(server
))
4378 if (npages
> ARRAY_SIZE(pages
))
4380 i
= buf_to_pages_noslab(buf
, buflen
, arg
.acl_pages
, &arg
.acl_pgbase
);
4383 nfs4_inode_return_delegation(inode
);
4384 ret
= nfs4_call_sync(server
->client
, server
, &msg
, &arg
.seq_args
, &res
.seq_res
, 1);
4387 * Free each page after tx, so the only ref left is
4388 * held by the network stack
4391 put_page(pages
[i
-1]);
4394 * Acl update can result in inode attribute update.
4395 * so mark the attribute cache invalid.
4397 spin_lock(&inode
->i_lock
);
4398 NFS_I(inode
)->cache_validity
|= NFS_INO_INVALID_ATTR
;
4399 spin_unlock(&inode
->i_lock
);
4400 nfs_access_zap_cache(inode
);
4401 nfs_zap_acl_cache(inode
);
4405 static int nfs4_proc_set_acl(struct inode
*inode
, const void *buf
, size_t buflen
)
4407 struct nfs4_exception exception
= { };
4410 err
= nfs4_handle_exception(NFS_SERVER(inode
),
4411 __nfs4_proc_set_acl(inode
, buf
, buflen
),
4413 } while (exception
.retry
);
4417 #ifdef CONFIG_NFS_V4_SECURITY_LABEL
4418 static int _nfs4_get_security_label(struct inode
*inode
, void *buf
,
4421 struct nfs_server
*server
= NFS_SERVER(inode
);
4422 struct nfs_fattr fattr
;
4423 struct nfs4_label label
= {0, 0, buflen
, buf
};
4425 u32 bitmask
[3] = { 0, 0, FATTR4_WORD2_SECURITY_LABEL
};
4426 struct nfs4_getattr_arg args
= {
4427 .fh
= NFS_FH(inode
),
4430 struct nfs4_getattr_res res
= {
4435 struct rpc_message msg
= {
4436 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GETATTR
],
4442 nfs_fattr_init(&fattr
);
4444 ret
= rpc_call_sync(server
->client
, &msg
, 0);
4447 if (!(fattr
.valid
& NFS_ATTR_FATTR_V4_SECURITY_LABEL
))
4449 if (buflen
< label
.len
)
4454 static int nfs4_get_security_label(struct inode
*inode
, void *buf
,
4457 struct nfs4_exception exception
= { };
4460 if (!nfs_server_capable(inode
, NFS_CAP_SECURITY_LABEL
))
4464 err
= nfs4_handle_exception(NFS_SERVER(inode
),
4465 _nfs4_get_security_label(inode
, buf
, buflen
),
4467 } while (exception
.retry
);
4471 static int _nfs4_do_set_security_label(struct inode
*inode
,
4472 struct nfs4_label
*ilabel
,
4473 struct nfs_fattr
*fattr
,
4474 struct nfs4_label
*olabel
)
4477 struct iattr sattr
= {0};
4478 struct nfs_server
*server
= NFS_SERVER(inode
);
4479 const u32 bitmask
[3] = { 0, 0, FATTR4_WORD2_SECURITY_LABEL
};
4480 struct nfs_setattrargs args
= {
4481 .fh
= NFS_FH(inode
),
4487 struct nfs_setattrres res
= {
4492 struct rpc_message msg
= {
4493 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETATTR
],
4499 nfs4_stateid_copy(&args
.stateid
, &zero_stateid
);
4501 status
= rpc_call_sync(server
->client
, &msg
, 0);
4503 dprintk("%s failed: %d\n", __func__
, status
);
4508 static int nfs4_do_set_security_label(struct inode
*inode
,
4509 struct nfs4_label
*ilabel
,
4510 struct nfs_fattr
*fattr
,
4511 struct nfs4_label
*olabel
)
4513 struct nfs4_exception exception
= { };
4517 err
= nfs4_handle_exception(NFS_SERVER(inode
),
4518 _nfs4_do_set_security_label(inode
, ilabel
,
4521 } while (exception
.retry
);
4526 nfs4_set_security_label(struct dentry
*dentry
, const void *buf
, size_t buflen
)
4528 struct nfs4_label ilabel
, *olabel
= NULL
;
4529 struct nfs_fattr fattr
;
4530 struct rpc_cred
*cred
;
4531 struct inode
*inode
= dentry
->d_inode
;
4534 if (!nfs_server_capable(inode
, NFS_CAP_SECURITY_LABEL
))
4537 nfs_fattr_init(&fattr
);
4541 ilabel
.label
= (char *)buf
;
4542 ilabel
.len
= buflen
;
4544 cred
= rpc_lookup_cred();
4546 return PTR_ERR(cred
);
4548 olabel
= nfs4_label_alloc(NFS_SERVER(inode
), GFP_KERNEL
);
4549 if (IS_ERR(olabel
)) {
4550 status
= -PTR_ERR(olabel
);
4554 status
= nfs4_do_set_security_label(inode
, &ilabel
, &fattr
, olabel
);
4556 nfs_setsecurity(inode
, &fattr
, olabel
);
4558 nfs4_label_free(olabel
);
4563 #endif /* CONFIG_NFS_V4_SECURITY_LABEL */
4567 nfs4_async_handle_error(struct rpc_task
*task
, const struct nfs_server
*server
, struct nfs4_state
*state
)
4569 struct nfs_client
*clp
= server
->nfs_client
;
4571 if (task
->tk_status
>= 0)
4573 switch(task
->tk_status
) {
4574 case -NFS4ERR_DELEG_REVOKED
:
4575 case -NFS4ERR_ADMIN_REVOKED
:
4576 case -NFS4ERR_BAD_STATEID
:
4579 nfs_remove_bad_delegation(state
->inode
);
4580 case -NFS4ERR_OPENMODE
:
4583 if (nfs4_schedule_stateid_recovery(server
, state
) < 0)
4584 goto stateid_invalid
;
4585 goto wait_on_recovery
;
4586 case -NFS4ERR_EXPIRED
:
4587 if (state
!= NULL
) {
4588 if (nfs4_schedule_stateid_recovery(server
, state
) < 0)
4589 goto stateid_invalid
;
4591 case -NFS4ERR_STALE_STATEID
:
4592 case -NFS4ERR_STALE_CLIENTID
:
4593 nfs4_schedule_lease_recovery(clp
);
4594 goto wait_on_recovery
;
4595 #if defined(CONFIG_NFS_V4_1)
4596 case -NFS4ERR_BADSESSION
:
4597 case -NFS4ERR_BADSLOT
:
4598 case -NFS4ERR_BAD_HIGH_SLOT
:
4599 case -NFS4ERR_DEADSESSION
:
4600 case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION
:
4601 case -NFS4ERR_SEQ_FALSE_RETRY
:
4602 case -NFS4ERR_SEQ_MISORDERED
:
4603 dprintk("%s ERROR %d, Reset session\n", __func__
,
4605 nfs4_schedule_session_recovery(clp
->cl_session
, task
->tk_status
);
4606 task
->tk_status
= 0;
4608 #endif /* CONFIG_NFS_V4_1 */
4609 case -NFS4ERR_DELAY
:
4610 nfs_inc_server_stats(server
, NFSIOS_DELAY
);
4611 case -NFS4ERR_GRACE
:
4612 rpc_delay(task
, NFS4_POLL_RETRY_MAX
);
4613 task
->tk_status
= 0;
4615 case -NFS4ERR_RETRY_UNCACHED_REP
:
4616 case -NFS4ERR_OLD_STATEID
:
4617 task
->tk_status
= 0;
4620 task
->tk_status
= nfs4_map_errors(task
->tk_status
);
4623 task
->tk_status
= -EIO
;
4626 rpc_sleep_on(&clp
->cl_rpcwaitq
, task
, NULL
);
4627 if (test_bit(NFS4CLNT_MANAGER_RUNNING
, &clp
->cl_state
) == 0)
4628 rpc_wake_up_queued_task(&clp
->cl_rpcwaitq
, task
);
4629 task
->tk_status
= 0;
4633 static void nfs4_init_boot_verifier(const struct nfs_client
*clp
,
4634 nfs4_verifier
*bootverf
)
4638 if (test_bit(NFS4CLNT_PURGE_STATE
, &clp
->cl_state
)) {
4639 /* An impossible timestamp guarantees this value
4640 * will never match a generated boot time. */
4642 verf
[1] = cpu_to_be32(NSEC_PER_SEC
+ 1);
4644 struct nfs_net
*nn
= net_generic(clp
->cl_net
, nfs_net_id
);
4645 verf
[0] = cpu_to_be32(nn
->boot_time
.tv_sec
);
4646 verf
[1] = cpu_to_be32(nn
->boot_time
.tv_nsec
);
4648 memcpy(bootverf
->data
, verf
, sizeof(bootverf
->data
));
4652 nfs4_init_nonuniform_client_string(const struct nfs_client
*clp
,
4653 char *buf
, size_t len
)
4655 unsigned int result
;
4658 result
= scnprintf(buf
, len
, "Linux NFSv4.0 %s/%s %s",
4660 rpc_peeraddr2str(clp
->cl_rpcclient
,
4662 rpc_peeraddr2str(clp
->cl_rpcclient
,
4663 RPC_DISPLAY_PROTO
));
4669 nfs4_init_uniform_client_string(const struct nfs_client
*clp
,
4670 char *buf
, size_t len
)
4672 const char *nodename
= clp
->cl_rpcclient
->cl_nodename
;
4674 if (nfs4_client_id_uniquifier
[0] != '\0')
4675 return scnprintf(buf
, len
, "Linux NFSv%u.%u %s/%s",
4676 clp
->rpc_ops
->version
,
4677 clp
->cl_minorversion
,
4678 nfs4_client_id_uniquifier
,
4680 return scnprintf(buf
, len
, "Linux NFSv%u.%u %s",
4681 clp
->rpc_ops
->version
, clp
->cl_minorversion
,
4686 * nfs4_proc_setclientid - Negotiate client ID
4687 * @clp: state data structure
4688 * @program: RPC program for NFSv4 callback service
4689 * @port: IP port number for NFS4 callback service
4690 * @cred: RPC credential to use for this call
4691 * @res: where to place the result
4693 * Returns zero, a negative errno, or a negative NFS4ERR status code.
4695 int nfs4_proc_setclientid(struct nfs_client
*clp
, u32 program
,
4696 unsigned short port
, struct rpc_cred
*cred
,
4697 struct nfs4_setclientid_res
*res
)
4699 nfs4_verifier sc_verifier
;
4700 struct nfs4_setclientid setclientid
= {
4701 .sc_verifier
= &sc_verifier
,
4703 .sc_cb_ident
= clp
->cl_cb_ident
,
4705 struct rpc_message msg
= {
4706 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETCLIENTID
],
4707 .rpc_argp
= &setclientid
,
4713 /* nfs_client_id4 */
4714 nfs4_init_boot_verifier(clp
, &sc_verifier
);
4715 if (test_bit(NFS_CS_MIGRATION
, &clp
->cl_flags
))
4716 setclientid
.sc_name_len
=
4717 nfs4_init_uniform_client_string(clp
,
4718 setclientid
.sc_name
,
4719 sizeof(setclientid
.sc_name
));
4721 setclientid
.sc_name_len
=
4722 nfs4_init_nonuniform_client_string(clp
,
4723 setclientid
.sc_name
,
4724 sizeof(setclientid
.sc_name
));
4727 setclientid
.sc_netid_len
= scnprintf(setclientid
.sc_netid
,
4728 sizeof(setclientid
.sc_netid
), "%s",
4729 rpc_peeraddr2str(clp
->cl_rpcclient
,
4730 RPC_DISPLAY_NETID
));
4732 setclientid
.sc_uaddr_len
= scnprintf(setclientid
.sc_uaddr
,
4733 sizeof(setclientid
.sc_uaddr
), "%s.%u.%u",
4734 clp
->cl_ipaddr
, port
>> 8, port
& 255);
4736 dprintk("NFS call setclientid auth=%s, '%.*s'\n",
4737 clp
->cl_rpcclient
->cl_auth
->au_ops
->au_name
,
4738 setclientid
.sc_name_len
, setclientid
.sc_name
);
4739 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
4740 trace_nfs4_setclientid(clp
, status
);
4741 dprintk("NFS reply setclientid: %d\n", status
);
4746 * nfs4_proc_setclientid_confirm - Confirm client ID
4747 * @clp: state data structure
4748 * @res: result of a previous SETCLIENTID
4749 * @cred: RPC credential to use for this call
4751 * Returns zero, a negative errno, or a negative NFS4ERR status code.
4753 int nfs4_proc_setclientid_confirm(struct nfs_client
*clp
,
4754 struct nfs4_setclientid_res
*arg
,
4755 struct rpc_cred
*cred
)
4757 struct rpc_message msg
= {
4758 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETCLIENTID_CONFIRM
],
4764 dprintk("NFS call setclientid_confirm auth=%s, (client ID %llx)\n",
4765 clp
->cl_rpcclient
->cl_auth
->au_ops
->au_name
,
4767 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
4768 trace_nfs4_setclientid_confirm(clp
, status
);
4769 dprintk("NFS reply setclientid_confirm: %d\n", status
);
4773 struct nfs4_delegreturndata
{
4774 struct nfs4_delegreturnargs args
;
4775 struct nfs4_delegreturnres res
;
4777 nfs4_stateid stateid
;
4778 unsigned long timestamp
;
4779 struct nfs_fattr fattr
;
4783 static void nfs4_delegreturn_done(struct rpc_task
*task
, void *calldata
)
4785 struct nfs4_delegreturndata
*data
= calldata
;
4787 if (!nfs4_sequence_done(task
, &data
->res
.seq_res
))
4790 switch (task
->tk_status
) {
4791 case -NFS4ERR_STALE_STATEID
:
4792 case -NFS4ERR_EXPIRED
:
4794 renew_lease(data
->res
.server
, data
->timestamp
);
4797 if (nfs4_async_handle_error(task
, data
->res
.server
, NULL
) ==
4799 rpc_restart_call_prepare(task
);
4803 data
->rpc_status
= task
->tk_status
;
4806 static void nfs4_delegreturn_release(void *calldata
)
4811 #if defined(CONFIG_NFS_V4_1)
4812 static void nfs4_delegreturn_prepare(struct rpc_task
*task
, void *data
)
4814 struct nfs4_delegreturndata
*d_data
;
4816 d_data
= (struct nfs4_delegreturndata
*)data
;
4818 nfs4_setup_sequence(d_data
->res
.server
,
4819 &d_data
->args
.seq_args
,
4820 &d_data
->res
.seq_res
,
4823 #endif /* CONFIG_NFS_V4_1 */
4825 static const struct rpc_call_ops nfs4_delegreturn_ops
= {
4826 #if defined(CONFIG_NFS_V4_1)
4827 .rpc_call_prepare
= nfs4_delegreturn_prepare
,
4828 #endif /* CONFIG_NFS_V4_1 */
4829 .rpc_call_done
= nfs4_delegreturn_done
,
4830 .rpc_release
= nfs4_delegreturn_release
,
4833 static int _nfs4_proc_delegreturn(struct inode
*inode
, struct rpc_cred
*cred
, const nfs4_stateid
*stateid
, int issync
)
4835 struct nfs4_delegreturndata
*data
;
4836 struct nfs_server
*server
= NFS_SERVER(inode
);
4837 struct rpc_task
*task
;
4838 struct rpc_message msg
= {
4839 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_DELEGRETURN
],
4842 struct rpc_task_setup task_setup_data
= {
4843 .rpc_client
= server
->client
,
4844 .rpc_message
= &msg
,
4845 .callback_ops
= &nfs4_delegreturn_ops
,
4846 .flags
= RPC_TASK_ASYNC
,
4850 data
= kzalloc(sizeof(*data
), GFP_NOFS
);
4853 nfs41_init_sequence(&data
->args
.seq_args
, &data
->res
.seq_res
, 1);
4854 data
->args
.fhandle
= &data
->fh
;
4855 data
->args
.stateid
= &data
->stateid
;
4856 data
->args
.bitmask
= server
->cache_consistency_bitmask
;
4857 nfs_copy_fh(&data
->fh
, NFS_FH(inode
));
4858 nfs4_stateid_copy(&data
->stateid
, stateid
);
4859 data
->res
.fattr
= &data
->fattr
;
4860 data
->res
.server
= server
;
4861 nfs_fattr_init(data
->res
.fattr
);
4862 data
->timestamp
= jiffies
;
4863 data
->rpc_status
= 0;
4865 task_setup_data
.callback_data
= data
;
4866 msg
.rpc_argp
= &data
->args
;
4867 msg
.rpc_resp
= &data
->res
;
4868 task
= rpc_run_task(&task_setup_data
);
4870 return PTR_ERR(task
);
4873 status
= nfs4_wait_for_completion_rpc_task(task
);
4876 status
= data
->rpc_status
;
4878 nfs_post_op_update_inode_force_wcc(inode
, &data
->fattr
);
4880 nfs_refresh_inode(inode
, &data
->fattr
);
4886 int nfs4_proc_delegreturn(struct inode
*inode
, struct rpc_cred
*cred
, const nfs4_stateid
*stateid
, int issync
)
4888 struct nfs_server
*server
= NFS_SERVER(inode
);
4889 struct nfs4_exception exception
= { };
4892 err
= _nfs4_proc_delegreturn(inode
, cred
, stateid
, issync
);
4894 case -NFS4ERR_STALE_STATEID
:
4895 case -NFS4ERR_EXPIRED
:
4899 err
= nfs4_handle_exception(server
, err
, &exception
);
4900 } while (exception
.retry
);
4904 #define NFS4_LOCK_MINTIMEOUT (1 * HZ)
4905 #define NFS4_LOCK_MAXTIMEOUT (30 * HZ)
4908 * sleep, with exponential backoff, and retry the LOCK operation.
4910 static unsigned long
4911 nfs4_set_lock_task_retry(unsigned long timeout
)
4913 freezable_schedule_timeout_killable_unsafe(timeout
);
4915 if (timeout
> NFS4_LOCK_MAXTIMEOUT
)
4916 return NFS4_LOCK_MAXTIMEOUT
;
4920 static int _nfs4_proc_getlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
4922 struct inode
*inode
= state
->inode
;
4923 struct nfs_server
*server
= NFS_SERVER(inode
);
4924 struct nfs_client
*clp
= server
->nfs_client
;
4925 struct nfs_lockt_args arg
= {
4926 .fh
= NFS_FH(inode
),
4929 struct nfs_lockt_res res
= {
4932 struct rpc_message msg
= {
4933 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOCKT
],
4936 .rpc_cred
= state
->owner
->so_cred
,
4938 struct nfs4_lock_state
*lsp
;
4941 arg
.lock_owner
.clientid
= clp
->cl_clientid
;
4942 status
= nfs4_set_lock_state(state
, request
);
4945 lsp
= request
->fl_u
.nfs4_fl
.owner
;
4946 arg
.lock_owner
.id
= lsp
->ls_seqid
.owner_id
;
4947 arg
.lock_owner
.s_dev
= server
->s_dev
;
4948 status
= nfs4_call_sync(server
->client
, server
, &msg
, &arg
.seq_args
, &res
.seq_res
, 1);
4951 request
->fl_type
= F_UNLCK
;
4953 case -NFS4ERR_DENIED
:
4956 request
->fl_ops
->fl_release_private(request
);
4961 static int nfs4_proc_getlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
4963 struct nfs4_exception exception
= { };
4967 err
= _nfs4_proc_getlk(state
, cmd
, request
);
4968 trace_nfs4_get_lock(request
, state
, cmd
, err
);
4969 err
= nfs4_handle_exception(NFS_SERVER(state
->inode
), err
,
4971 } while (exception
.retry
);
4975 static int do_vfs_lock(struct file
*file
, struct file_lock
*fl
)
4978 switch (fl
->fl_flags
& (FL_POSIX
|FL_FLOCK
)) {
4980 res
= posix_lock_file_wait(file
, fl
);
4983 res
= flock_lock_file_wait(file
, fl
);
4991 struct nfs4_unlockdata
{
4992 struct nfs_locku_args arg
;
4993 struct nfs_locku_res res
;
4994 struct nfs4_lock_state
*lsp
;
4995 struct nfs_open_context
*ctx
;
4996 struct file_lock fl
;
4997 const struct nfs_server
*server
;
4998 unsigned long timestamp
;
5001 static struct nfs4_unlockdata
*nfs4_alloc_unlockdata(struct file_lock
*fl
,
5002 struct nfs_open_context
*ctx
,
5003 struct nfs4_lock_state
*lsp
,
5004 struct nfs_seqid
*seqid
)
5006 struct nfs4_unlockdata
*p
;
5007 struct inode
*inode
= lsp
->ls_state
->inode
;
5009 p
= kzalloc(sizeof(*p
), GFP_NOFS
);
5012 p
->arg
.fh
= NFS_FH(inode
);
5014 p
->arg
.seqid
= seqid
;
5015 p
->res
.seqid
= seqid
;
5016 p
->arg
.stateid
= &lsp
->ls_stateid
;
5018 atomic_inc(&lsp
->ls_count
);
5019 /* Ensure we don't close file until we're done freeing locks! */
5020 p
->ctx
= get_nfs_open_context(ctx
);
5021 memcpy(&p
->fl
, fl
, sizeof(p
->fl
));
5022 p
->server
= NFS_SERVER(inode
);
5026 static void nfs4_locku_release_calldata(void *data
)
5028 struct nfs4_unlockdata
*calldata
= data
;
5029 nfs_free_seqid(calldata
->arg
.seqid
);
5030 nfs4_put_lock_state(calldata
->lsp
);
5031 put_nfs_open_context(calldata
->ctx
);
5035 static void nfs4_locku_done(struct rpc_task
*task
, void *data
)
5037 struct nfs4_unlockdata
*calldata
= data
;
5039 if (!nfs4_sequence_done(task
, &calldata
->res
.seq_res
))
5041 switch (task
->tk_status
) {
5043 nfs4_stateid_copy(&calldata
->lsp
->ls_stateid
,
5044 &calldata
->res
.stateid
);
5045 renew_lease(calldata
->server
, calldata
->timestamp
);
5047 case -NFS4ERR_BAD_STATEID
:
5048 case -NFS4ERR_OLD_STATEID
:
5049 case -NFS4ERR_STALE_STATEID
:
5050 case -NFS4ERR_EXPIRED
:
5053 if (nfs4_async_handle_error(task
, calldata
->server
, NULL
) == -EAGAIN
)
5054 rpc_restart_call_prepare(task
);
5056 nfs_release_seqid(calldata
->arg
.seqid
);
5059 static void nfs4_locku_prepare(struct rpc_task
*task
, void *data
)
5061 struct nfs4_unlockdata
*calldata
= data
;
5063 if (nfs_wait_on_sequence(calldata
->arg
.seqid
, task
) != 0)
5065 if (test_bit(NFS_LOCK_INITIALIZED
, &calldata
->lsp
->ls_flags
) == 0) {
5066 /* Note: exit _without_ running nfs4_locku_done */
5069 calldata
->timestamp
= jiffies
;
5070 if (nfs4_setup_sequence(calldata
->server
,
5071 &calldata
->arg
.seq_args
,
5072 &calldata
->res
.seq_res
,
5074 nfs_release_seqid(calldata
->arg
.seqid
);
5077 task
->tk_action
= NULL
;
5079 nfs4_sequence_done(task
, &calldata
->res
.seq_res
);
5082 static const struct rpc_call_ops nfs4_locku_ops
= {
5083 .rpc_call_prepare
= nfs4_locku_prepare
,
5084 .rpc_call_done
= nfs4_locku_done
,
5085 .rpc_release
= nfs4_locku_release_calldata
,
5088 static struct rpc_task
*nfs4_do_unlck(struct file_lock
*fl
,
5089 struct nfs_open_context
*ctx
,
5090 struct nfs4_lock_state
*lsp
,
5091 struct nfs_seqid
*seqid
)
5093 struct nfs4_unlockdata
*data
;
5094 struct rpc_message msg
= {
5095 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOCKU
],
5096 .rpc_cred
= ctx
->cred
,
5098 struct rpc_task_setup task_setup_data
= {
5099 .rpc_client
= NFS_CLIENT(lsp
->ls_state
->inode
),
5100 .rpc_message
= &msg
,
5101 .callback_ops
= &nfs4_locku_ops
,
5102 .workqueue
= nfsiod_workqueue
,
5103 .flags
= RPC_TASK_ASYNC
,
5106 /* Ensure this is an unlock - when canceling a lock, the
5107 * canceled lock is passed in, and it won't be an unlock.
5109 fl
->fl_type
= F_UNLCK
;
5111 data
= nfs4_alloc_unlockdata(fl
, ctx
, lsp
, seqid
);
5113 nfs_free_seqid(seqid
);
5114 return ERR_PTR(-ENOMEM
);
5117 nfs41_init_sequence(&data
->arg
.seq_args
, &data
->res
.seq_res
, 1);
5118 msg
.rpc_argp
= &data
->arg
;
5119 msg
.rpc_resp
= &data
->res
;
5120 task_setup_data
.callback_data
= data
;
5121 return rpc_run_task(&task_setup_data
);
5124 static int nfs4_proc_unlck(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
5126 struct inode
*inode
= state
->inode
;
5127 struct nfs4_state_owner
*sp
= state
->owner
;
5128 struct nfs_inode
*nfsi
= NFS_I(inode
);
5129 struct nfs_seqid
*seqid
;
5130 struct nfs4_lock_state
*lsp
;
5131 struct rpc_task
*task
;
5133 unsigned char fl_flags
= request
->fl_flags
;
5135 status
= nfs4_set_lock_state(state
, request
);
5136 /* Unlock _before_ we do the RPC call */
5137 request
->fl_flags
|= FL_EXISTS
;
5138 /* Exclude nfs_delegation_claim_locks() */
5139 mutex_lock(&sp
->so_delegreturn_mutex
);
5140 /* Exclude nfs4_reclaim_open_stateid() - note nesting! */
5141 down_read(&nfsi
->rwsem
);
5142 if (do_vfs_lock(request
->fl_file
, request
) == -ENOENT
) {
5143 up_read(&nfsi
->rwsem
);
5144 mutex_unlock(&sp
->so_delegreturn_mutex
);
5147 up_read(&nfsi
->rwsem
);
5148 mutex_unlock(&sp
->so_delegreturn_mutex
);
5151 /* Is this a delegated lock? */
5152 lsp
= request
->fl_u
.nfs4_fl
.owner
;
5153 if (test_bit(NFS_LOCK_INITIALIZED
, &lsp
->ls_flags
) == 0)
5155 seqid
= nfs_alloc_seqid(&lsp
->ls_seqid
, GFP_KERNEL
);
5159 task
= nfs4_do_unlck(request
, nfs_file_open_context(request
->fl_file
), lsp
, seqid
);
5160 status
= PTR_ERR(task
);
5163 status
= nfs4_wait_for_completion_rpc_task(task
);
5166 request
->fl_flags
= fl_flags
;
5167 trace_nfs4_unlock(request
, state
, F_SETLK
, status
);
5171 struct nfs4_lockdata
{
5172 struct nfs_lock_args arg
;
5173 struct nfs_lock_res res
;
5174 struct nfs4_lock_state
*lsp
;
5175 struct nfs_open_context
*ctx
;
5176 struct file_lock fl
;
5177 unsigned long timestamp
;
5180 struct nfs_server
*server
;
5183 static struct nfs4_lockdata
*nfs4_alloc_lockdata(struct file_lock
*fl
,
5184 struct nfs_open_context
*ctx
, struct nfs4_lock_state
*lsp
,
5187 struct nfs4_lockdata
*p
;
5188 struct inode
*inode
= lsp
->ls_state
->inode
;
5189 struct nfs_server
*server
= NFS_SERVER(inode
);
5191 p
= kzalloc(sizeof(*p
), gfp_mask
);
5195 p
->arg
.fh
= NFS_FH(inode
);
5197 p
->arg
.open_seqid
= nfs_alloc_seqid(&lsp
->ls_state
->owner
->so_seqid
, gfp_mask
);
5198 if (p
->arg
.open_seqid
== NULL
)
5200 p
->arg
.lock_seqid
= nfs_alloc_seqid(&lsp
->ls_seqid
, gfp_mask
);
5201 if (p
->arg
.lock_seqid
== NULL
)
5202 goto out_free_seqid
;
5203 p
->arg
.lock_stateid
= &lsp
->ls_stateid
;
5204 p
->arg
.lock_owner
.clientid
= server
->nfs_client
->cl_clientid
;
5205 p
->arg
.lock_owner
.id
= lsp
->ls_seqid
.owner_id
;
5206 p
->arg
.lock_owner
.s_dev
= server
->s_dev
;
5207 p
->res
.lock_seqid
= p
->arg
.lock_seqid
;
5210 atomic_inc(&lsp
->ls_count
);
5211 p
->ctx
= get_nfs_open_context(ctx
);
5212 memcpy(&p
->fl
, fl
, sizeof(p
->fl
));
5215 nfs_free_seqid(p
->arg
.open_seqid
);
5221 static void nfs4_lock_prepare(struct rpc_task
*task
, void *calldata
)
5223 struct nfs4_lockdata
*data
= calldata
;
5224 struct nfs4_state
*state
= data
->lsp
->ls_state
;
5226 dprintk("%s: begin!\n", __func__
);
5227 if (nfs_wait_on_sequence(data
->arg
.lock_seqid
, task
) != 0)
5229 /* Do we need to do an open_to_lock_owner? */
5230 if (!(data
->arg
.lock_seqid
->sequence
->flags
& NFS_SEQID_CONFIRMED
)) {
5231 if (nfs_wait_on_sequence(data
->arg
.open_seqid
, task
) != 0) {
5232 goto out_release_lock_seqid
;
5234 data
->arg
.open_stateid
= &state
->open_stateid
;
5235 data
->arg
.new_lock_owner
= 1;
5236 data
->res
.open_seqid
= data
->arg
.open_seqid
;
5238 data
->arg
.new_lock_owner
= 0;
5239 if (!nfs4_valid_open_stateid(state
)) {
5240 data
->rpc_status
= -EBADF
;
5241 task
->tk_action
= NULL
;
5242 goto out_release_open_seqid
;
5244 data
->timestamp
= jiffies
;
5245 if (nfs4_setup_sequence(data
->server
,
5246 &data
->arg
.seq_args
,
5250 out_release_open_seqid
:
5251 nfs_release_seqid(data
->arg
.open_seqid
);
5252 out_release_lock_seqid
:
5253 nfs_release_seqid(data
->arg
.lock_seqid
);
5255 nfs4_sequence_done(task
, &data
->res
.seq_res
);
5256 dprintk("%s: done!, ret = %d\n", __func__
, data
->rpc_status
);
5259 static void nfs4_lock_done(struct rpc_task
*task
, void *calldata
)
5261 struct nfs4_lockdata
*data
= calldata
;
5263 dprintk("%s: begin!\n", __func__
);
5265 if (!nfs4_sequence_done(task
, &data
->res
.seq_res
))
5268 data
->rpc_status
= task
->tk_status
;
5269 if (data
->arg
.new_lock_owner
!= 0) {
5270 if (data
->rpc_status
== 0)
5271 nfs_confirm_seqid(&data
->lsp
->ls_seqid
, 0);
5275 if (data
->rpc_status
== 0) {
5276 nfs4_stateid_copy(&data
->lsp
->ls_stateid
, &data
->res
.stateid
);
5277 set_bit(NFS_LOCK_INITIALIZED
, &data
->lsp
->ls_flags
);
5278 renew_lease(NFS_SERVER(data
->ctx
->dentry
->d_inode
), data
->timestamp
);
5281 dprintk("%s: done, ret = %d!\n", __func__
, data
->rpc_status
);
5284 static void nfs4_lock_release(void *calldata
)
5286 struct nfs4_lockdata
*data
= calldata
;
5288 dprintk("%s: begin!\n", __func__
);
5289 nfs_free_seqid(data
->arg
.open_seqid
);
5290 if (data
->cancelled
!= 0) {
5291 struct rpc_task
*task
;
5292 task
= nfs4_do_unlck(&data
->fl
, data
->ctx
, data
->lsp
,
5293 data
->arg
.lock_seqid
);
5295 rpc_put_task_async(task
);
5296 dprintk("%s: cancelling lock!\n", __func__
);
5298 nfs_free_seqid(data
->arg
.lock_seqid
);
5299 nfs4_put_lock_state(data
->lsp
);
5300 put_nfs_open_context(data
->ctx
);
5302 dprintk("%s: done!\n", __func__
);
5305 static const struct rpc_call_ops nfs4_lock_ops
= {
5306 .rpc_call_prepare
= nfs4_lock_prepare
,
5307 .rpc_call_done
= nfs4_lock_done
,
5308 .rpc_release
= nfs4_lock_release
,
5311 static void nfs4_handle_setlk_error(struct nfs_server
*server
, struct nfs4_lock_state
*lsp
, int new_lock_owner
, int error
)
5314 case -NFS4ERR_ADMIN_REVOKED
:
5315 case -NFS4ERR_BAD_STATEID
:
5316 lsp
->ls_seqid
.flags
&= ~NFS_SEQID_CONFIRMED
;
5317 if (new_lock_owner
!= 0 ||
5318 test_bit(NFS_LOCK_INITIALIZED
, &lsp
->ls_flags
) != 0)
5319 nfs4_schedule_stateid_recovery(server
, lsp
->ls_state
);
5321 case -NFS4ERR_STALE_STATEID
:
5322 lsp
->ls_seqid
.flags
&= ~NFS_SEQID_CONFIRMED
;
5323 case -NFS4ERR_EXPIRED
:
5324 nfs4_schedule_lease_recovery(server
->nfs_client
);
5328 static int _nfs4_do_setlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*fl
, int recovery_type
)
5330 struct nfs4_lockdata
*data
;
5331 struct rpc_task
*task
;
5332 struct rpc_message msg
= {
5333 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOCK
],
5334 .rpc_cred
= state
->owner
->so_cred
,
5336 struct rpc_task_setup task_setup_data
= {
5337 .rpc_client
= NFS_CLIENT(state
->inode
),
5338 .rpc_message
= &msg
,
5339 .callback_ops
= &nfs4_lock_ops
,
5340 .workqueue
= nfsiod_workqueue
,
5341 .flags
= RPC_TASK_ASYNC
,
5345 dprintk("%s: begin!\n", __func__
);
5346 data
= nfs4_alloc_lockdata(fl
, nfs_file_open_context(fl
->fl_file
),
5347 fl
->fl_u
.nfs4_fl
.owner
,
5348 recovery_type
== NFS_LOCK_NEW
? GFP_KERNEL
: GFP_NOFS
);
5352 data
->arg
.block
= 1;
5353 nfs41_init_sequence(&data
->arg
.seq_args
, &data
->res
.seq_res
, 1);
5354 msg
.rpc_argp
= &data
->arg
;
5355 msg
.rpc_resp
= &data
->res
;
5356 task_setup_data
.callback_data
= data
;
5357 if (recovery_type
> NFS_LOCK_NEW
) {
5358 if (recovery_type
== NFS_LOCK_RECLAIM
)
5359 data
->arg
.reclaim
= NFS_LOCK_RECLAIM
;
5360 nfs4_set_sequence_privileged(&data
->arg
.seq_args
);
5362 task
= rpc_run_task(&task_setup_data
);
5364 return PTR_ERR(task
);
5365 ret
= nfs4_wait_for_completion_rpc_task(task
);
5367 ret
= data
->rpc_status
;
5369 nfs4_handle_setlk_error(data
->server
, data
->lsp
,
5370 data
->arg
.new_lock_owner
, ret
);
5372 data
->cancelled
= 1;
5374 dprintk("%s: done, ret = %d!\n", __func__
, ret
);
5378 static int nfs4_lock_reclaim(struct nfs4_state
*state
, struct file_lock
*request
)
5380 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
5381 struct nfs4_exception exception
= {
5382 .inode
= state
->inode
,
5387 /* Cache the lock if possible... */
5388 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) != 0)
5390 err
= _nfs4_do_setlk(state
, F_SETLK
, request
, NFS_LOCK_RECLAIM
);
5391 trace_nfs4_lock_reclaim(request
, state
, F_SETLK
, err
);
5392 if (err
!= -NFS4ERR_DELAY
)
5394 nfs4_handle_exception(server
, err
, &exception
);
5395 } while (exception
.retry
);
5399 static int nfs4_lock_expired(struct nfs4_state
*state
, struct file_lock
*request
)
5401 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
5402 struct nfs4_exception exception
= {
5403 .inode
= state
->inode
,
5407 err
= nfs4_set_lock_state(state
, request
);
5411 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) != 0)
5413 err
= _nfs4_do_setlk(state
, F_SETLK
, request
, NFS_LOCK_EXPIRED
);
5414 trace_nfs4_lock_expired(request
, state
, F_SETLK
, err
);
5418 case -NFS4ERR_GRACE
:
5419 case -NFS4ERR_DELAY
:
5420 nfs4_handle_exception(server
, err
, &exception
);
5423 } while (exception
.retry
);
5428 #if defined(CONFIG_NFS_V4_1)
5430 * nfs41_check_expired_locks - possibly free a lock stateid
5432 * @state: NFSv4 state for an inode
5434 * Returns NFS_OK if recovery for this stateid is now finished.
5435 * Otherwise a negative NFS4ERR value is returned.
5437 static int nfs41_check_expired_locks(struct nfs4_state
*state
)
5439 int status
, ret
= -NFS4ERR_BAD_STATEID
;
5440 struct nfs4_lock_state
*lsp
;
5441 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
5443 list_for_each_entry(lsp
, &state
->lock_states
, ls_locks
) {
5444 if (test_bit(NFS_LOCK_INITIALIZED
, &lsp
->ls_flags
)) {
5445 struct rpc_cred
*cred
= lsp
->ls_state
->owner
->so_cred
;
5447 status
= nfs41_test_stateid(server
,
5450 if (status
!= NFS_OK
) {
5451 /* Free the stateid unless the server
5452 * informs us the stateid is unrecognized. */
5453 if (status
!= -NFS4ERR_BAD_STATEID
)
5454 nfs41_free_stateid(server
,
5457 clear_bit(NFS_LOCK_INITIALIZED
, &lsp
->ls_flags
);
5466 static int nfs41_lock_expired(struct nfs4_state
*state
, struct file_lock
*request
)
5468 int status
= NFS_OK
;
5470 if (test_bit(LK_STATE_IN_USE
, &state
->flags
))
5471 status
= nfs41_check_expired_locks(state
);
5472 if (status
!= NFS_OK
)
5473 status
= nfs4_lock_expired(state
, request
);
5478 static int _nfs4_proc_setlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
5480 struct nfs4_state_owner
*sp
= state
->owner
;
5481 struct nfs_inode
*nfsi
= NFS_I(state
->inode
);
5482 unsigned char fl_flags
= request
->fl_flags
;
5484 int status
= -ENOLCK
;
5486 if ((fl_flags
& FL_POSIX
) &&
5487 !test_bit(NFS_STATE_POSIX_LOCKS
, &state
->flags
))
5489 /* Is this a delegated open? */
5490 status
= nfs4_set_lock_state(state
, request
);
5493 request
->fl_flags
|= FL_ACCESS
;
5494 status
= do_vfs_lock(request
->fl_file
, request
);
5497 down_read(&nfsi
->rwsem
);
5498 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
)) {
5499 /* Yes: cache locks! */
5500 /* ...but avoid races with delegation recall... */
5501 request
->fl_flags
= fl_flags
& ~FL_SLEEP
;
5502 status
= do_vfs_lock(request
->fl_file
, request
);
5505 seq
= raw_seqcount_begin(&sp
->so_reclaim_seqcount
);
5506 up_read(&nfsi
->rwsem
);
5507 status
= _nfs4_do_setlk(state
, cmd
, request
, NFS_LOCK_NEW
);
5510 down_read(&nfsi
->rwsem
);
5511 if (read_seqcount_retry(&sp
->so_reclaim_seqcount
, seq
)) {
5512 status
= -NFS4ERR_DELAY
;
5515 /* Note: we always want to sleep here! */
5516 request
->fl_flags
= fl_flags
| FL_SLEEP
;
5517 if (do_vfs_lock(request
->fl_file
, request
) < 0)
5518 printk(KERN_WARNING
"NFS: %s: VFS is out of sync with lock "
5519 "manager!\n", __func__
);
5521 up_read(&nfsi
->rwsem
);
5523 request
->fl_flags
= fl_flags
;
5527 static int nfs4_proc_setlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
5529 struct nfs4_exception exception
= {
5531 .inode
= state
->inode
,
5536 err
= _nfs4_proc_setlk(state
, cmd
, request
);
5537 trace_nfs4_set_lock(request
, state
, cmd
, err
);
5538 if (err
== -NFS4ERR_DENIED
)
5540 err
= nfs4_handle_exception(NFS_SERVER(state
->inode
),
5542 } while (exception
.retry
);
5547 nfs4_proc_lock(struct file
*filp
, int cmd
, struct file_lock
*request
)
5549 struct nfs_open_context
*ctx
;
5550 struct nfs4_state
*state
;
5551 unsigned long timeout
= NFS4_LOCK_MINTIMEOUT
;
5554 /* verify open state */
5555 ctx
= nfs_file_open_context(filp
);
5558 if (request
->fl_start
< 0 || request
->fl_end
< 0)
5561 if (IS_GETLK(cmd
)) {
5563 return nfs4_proc_getlk(state
, F_GETLK
, request
);
5567 if (!(IS_SETLK(cmd
) || IS_SETLKW(cmd
)))
5570 if (request
->fl_type
== F_UNLCK
) {
5572 return nfs4_proc_unlck(state
, cmd
, request
);
5579 * Don't rely on the VFS having checked the file open mode,
5580 * since it won't do this for flock() locks.
5582 switch (request
->fl_type
) {
5584 if (!(filp
->f_mode
& FMODE_READ
))
5588 if (!(filp
->f_mode
& FMODE_WRITE
))
5593 status
= nfs4_proc_setlk(state
, cmd
, request
);
5594 if ((status
!= -EAGAIN
) || IS_SETLK(cmd
))
5596 timeout
= nfs4_set_lock_task_retry(timeout
);
5597 status
= -ERESTARTSYS
;
5600 } while(status
< 0);
5604 int nfs4_lock_delegation_recall(struct file_lock
*fl
, struct nfs4_state
*state
, const nfs4_stateid
*stateid
)
5606 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
5609 err
= nfs4_set_lock_state(state
, fl
);
5612 err
= _nfs4_do_setlk(state
, F_SETLK
, fl
, NFS_LOCK_NEW
);
5613 return nfs4_handle_delegation_recall_error(server
, state
, stateid
, err
);
5616 struct nfs_release_lockowner_data
{
5617 struct nfs4_lock_state
*lsp
;
5618 struct nfs_server
*server
;
5619 struct nfs_release_lockowner_args args
;
5622 static void nfs4_release_lockowner_release(void *calldata
)
5624 struct nfs_release_lockowner_data
*data
= calldata
;
5625 nfs4_free_lock_state(data
->server
, data
->lsp
);
5629 static const struct rpc_call_ops nfs4_release_lockowner_ops
= {
5630 .rpc_release
= nfs4_release_lockowner_release
,
5633 static int nfs4_release_lockowner(struct nfs_server
*server
, struct nfs4_lock_state
*lsp
)
5635 struct nfs_release_lockowner_data
*data
;
5636 struct rpc_message msg
= {
5637 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RELEASE_LOCKOWNER
],
5640 if (server
->nfs_client
->cl_mvops
->minor_version
!= 0)
5642 data
= kmalloc(sizeof(*data
), GFP_NOFS
);
5646 data
->server
= server
;
5647 data
->args
.lock_owner
.clientid
= server
->nfs_client
->cl_clientid
;
5648 data
->args
.lock_owner
.id
= lsp
->ls_seqid
.owner_id
;
5649 data
->args
.lock_owner
.s_dev
= server
->s_dev
;
5650 msg
.rpc_argp
= &data
->args
;
5651 rpc_call_async(server
->client
, &msg
, 0, &nfs4_release_lockowner_ops
, data
);
5655 #define XATTR_NAME_NFSV4_ACL "system.nfs4_acl"
5657 static int nfs4_xattr_set_nfs4_acl(struct dentry
*dentry
, const char *key
,
5658 const void *buf
, size_t buflen
,
5659 int flags
, int type
)
5661 if (strcmp(key
, "") != 0)
5664 return nfs4_proc_set_acl(dentry
->d_inode
, buf
, buflen
);
5667 static int nfs4_xattr_get_nfs4_acl(struct dentry
*dentry
, const char *key
,
5668 void *buf
, size_t buflen
, int type
)
5670 if (strcmp(key
, "") != 0)
5673 return nfs4_proc_get_acl(dentry
->d_inode
, buf
, buflen
);
5676 static size_t nfs4_xattr_list_nfs4_acl(struct dentry
*dentry
, char *list
,
5677 size_t list_len
, const char *name
,
5678 size_t name_len
, int type
)
5680 size_t len
= sizeof(XATTR_NAME_NFSV4_ACL
);
5682 if (!nfs4_server_supports_acls(NFS_SERVER(dentry
->d_inode
)))
5685 if (list
&& len
<= list_len
)
5686 memcpy(list
, XATTR_NAME_NFSV4_ACL
, len
);
5690 #ifdef CONFIG_NFS_V4_SECURITY_LABEL
5691 static inline int nfs4_server_supports_labels(struct nfs_server
*server
)
5693 return server
->caps
& NFS_CAP_SECURITY_LABEL
;
5696 static int nfs4_xattr_set_nfs4_label(struct dentry
*dentry
, const char *key
,
5697 const void *buf
, size_t buflen
,
5698 int flags
, int type
)
5700 if (security_ismaclabel(key
))
5701 return nfs4_set_security_label(dentry
, buf
, buflen
);
5706 static int nfs4_xattr_get_nfs4_label(struct dentry
*dentry
, const char *key
,
5707 void *buf
, size_t buflen
, int type
)
5709 if (security_ismaclabel(key
))
5710 return nfs4_get_security_label(dentry
->d_inode
, buf
, buflen
);
5714 static size_t nfs4_xattr_list_nfs4_label(struct dentry
*dentry
, char *list
,
5715 size_t list_len
, const char *name
,
5716 size_t name_len
, int type
)
5720 if (nfs_server_capable(dentry
->d_inode
, NFS_CAP_SECURITY_LABEL
)) {
5721 len
= security_inode_listsecurity(dentry
->d_inode
, NULL
, 0);
5722 if (list
&& len
<= list_len
)
5723 security_inode_listsecurity(dentry
->d_inode
, list
, len
);
5728 static const struct xattr_handler nfs4_xattr_nfs4_label_handler
= {
5729 .prefix
= XATTR_SECURITY_PREFIX
,
5730 .list
= nfs4_xattr_list_nfs4_label
,
5731 .get
= nfs4_xattr_get_nfs4_label
,
5732 .set
= nfs4_xattr_set_nfs4_label
,
5738 * nfs_fhget will use either the mounted_on_fileid or the fileid
5740 static void nfs_fixup_referral_attributes(struct nfs_fattr
*fattr
)
5742 if (!(((fattr
->valid
& NFS_ATTR_FATTR_MOUNTED_ON_FILEID
) ||
5743 (fattr
->valid
& NFS_ATTR_FATTR_FILEID
)) &&
5744 (fattr
->valid
& NFS_ATTR_FATTR_FSID
) &&
5745 (fattr
->valid
& NFS_ATTR_FATTR_V4_LOCATIONS
)))
5748 fattr
->valid
|= NFS_ATTR_FATTR_TYPE
| NFS_ATTR_FATTR_MODE
|
5749 NFS_ATTR_FATTR_NLINK
| NFS_ATTR_FATTR_V4_REFERRAL
;
5750 fattr
->mode
= S_IFDIR
| S_IRUGO
| S_IXUGO
;
5754 static int _nfs4_proc_fs_locations(struct rpc_clnt
*client
, struct inode
*dir
,
5755 const struct qstr
*name
,
5756 struct nfs4_fs_locations
*fs_locations
,
5759 struct nfs_server
*server
= NFS_SERVER(dir
);
5761 [0] = FATTR4_WORD0_FSID
| FATTR4_WORD0_FS_LOCATIONS
,
5763 struct nfs4_fs_locations_arg args
= {
5764 .dir_fh
= NFS_FH(dir
),
5769 struct nfs4_fs_locations_res res
= {
5770 .fs_locations
= fs_locations
,
5772 struct rpc_message msg
= {
5773 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_FS_LOCATIONS
],
5779 dprintk("%s: start\n", __func__
);
5781 /* Ask for the fileid of the absent filesystem if mounted_on_fileid
5782 * is not supported */
5783 if (NFS_SERVER(dir
)->attr_bitmask
[1] & FATTR4_WORD1_MOUNTED_ON_FILEID
)
5784 bitmask
[1] |= FATTR4_WORD1_MOUNTED_ON_FILEID
;
5786 bitmask
[0] |= FATTR4_WORD0_FILEID
;
5788 nfs_fattr_init(&fs_locations
->fattr
);
5789 fs_locations
->server
= server
;
5790 fs_locations
->nlocations
= 0;
5791 status
= nfs4_call_sync(client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
5792 dprintk("%s: returned status = %d\n", __func__
, status
);
5796 int nfs4_proc_fs_locations(struct rpc_clnt
*client
, struct inode
*dir
,
5797 const struct qstr
*name
,
5798 struct nfs4_fs_locations
*fs_locations
,
5801 struct nfs4_exception exception
= { };
5804 err
= nfs4_handle_exception(NFS_SERVER(dir
),
5805 _nfs4_proc_fs_locations(client
, dir
, name
, fs_locations
, page
),
5807 } while (exception
.retry
);
5812 * Use the state managment nfs_client cl_rpcclient, which uses krb5i (if
5813 * possible) as per RFC3530bis and RFC5661 Security Considerations sections
5815 static int _nfs4_proc_secinfo(struct inode
*dir
, const struct qstr
*name
, struct nfs4_secinfo_flavors
*flavors
)
5818 struct nfs4_secinfo_arg args
= {
5819 .dir_fh
= NFS_FH(dir
),
5822 struct nfs4_secinfo_res res
= {
5825 struct rpc_message msg
= {
5826 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SECINFO
],
5830 struct rpc_clnt
*clnt
= NFS_SERVER(dir
)->nfs_client
->cl_rpcclient
;
5832 dprintk("NFS call secinfo %s\n", name
->name
);
5833 status
= nfs4_call_sync(clnt
, NFS_SERVER(dir
), &msg
, &args
.seq_args
, &res
.seq_res
, 0);
5834 dprintk("NFS reply secinfo: %d\n", status
);
5838 int nfs4_proc_secinfo(struct inode
*dir
, const struct qstr
*name
,
5839 struct nfs4_secinfo_flavors
*flavors
)
5841 struct nfs4_exception exception
= { };
5844 err
= nfs4_handle_exception(NFS_SERVER(dir
),
5845 _nfs4_proc_secinfo(dir
, name
, flavors
),
5847 } while (exception
.retry
);
5851 #ifdef CONFIG_NFS_V4_1
5853 * Check the exchange flags returned by the server for invalid flags, having
5854 * both PNFS and NON_PNFS flags set, and not having one of NON_PNFS, PNFS, or
5857 static int nfs4_check_cl_exchange_flags(u32 flags
)
5859 if (flags
& ~EXCHGID4_FLAG_MASK_R
)
5861 if ((flags
& EXCHGID4_FLAG_USE_PNFS_MDS
) &&
5862 (flags
& EXCHGID4_FLAG_USE_NON_PNFS
))
5864 if (!(flags
& (EXCHGID4_FLAG_MASK_PNFS
)))
5868 return -NFS4ERR_INVAL
;
5872 nfs41_same_server_scope(struct nfs41_server_scope
*a
,
5873 struct nfs41_server_scope
*b
)
5875 if (a
->server_scope_sz
== b
->server_scope_sz
&&
5876 memcmp(a
->server_scope
, b
->server_scope
, a
->server_scope_sz
) == 0)
5883 * nfs4_proc_bind_conn_to_session()
5885 * The 4.1 client currently uses the same TCP connection for the
5886 * fore and backchannel.
5888 int nfs4_proc_bind_conn_to_session(struct nfs_client
*clp
, struct rpc_cred
*cred
)
5891 struct nfs41_bind_conn_to_session_res res
;
5892 struct rpc_message msg
= {
5894 &nfs4_procedures
[NFSPROC4_CLNT_BIND_CONN_TO_SESSION
],
5900 dprintk("--> %s\n", __func__
);
5902 res
.session
= kzalloc(sizeof(struct nfs4_session
), GFP_NOFS
);
5903 if (unlikely(res
.session
== NULL
)) {
5908 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
5909 trace_nfs4_bind_conn_to_session(clp
, status
);
5911 if (memcmp(res
.session
->sess_id
.data
,
5912 clp
->cl_session
->sess_id
.data
, NFS4_MAX_SESSIONID_LEN
)) {
5913 dprintk("NFS: %s: Session ID mismatch\n", __func__
);
5917 if (res
.dir
!= NFS4_CDFS4_BOTH
) {
5918 dprintk("NFS: %s: Unexpected direction from server\n",
5923 if (res
.use_conn_in_rdma_mode
) {
5924 dprintk("NFS: %s: Server returned RDMA mode = true\n",
5933 dprintk("<-- %s status= %d\n", __func__
, status
);
5938 * nfs4_proc_exchange_id()
5940 * Returns zero, a negative errno, or a negative NFS4ERR status code.
5942 * Since the clientid has expired, all compounds using sessions
5943 * associated with the stale clientid will be returning
5944 * NFS4ERR_BADSESSION in the sequence operation, and will therefore
5945 * be in some phase of session reset.
5947 int nfs4_proc_exchange_id(struct nfs_client
*clp
, struct rpc_cred
*cred
)
5949 nfs4_verifier verifier
;
5950 struct nfs41_exchange_id_args args
= {
5951 .verifier
= &verifier
,
5953 .flags
= EXCHGID4_FLAG_SUPP_MOVED_REFER
|
5954 EXCHGID4_FLAG_BIND_PRINC_STATEID
,
5956 struct nfs41_exchange_id_res res
= {
5960 struct rpc_message msg
= {
5961 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_EXCHANGE_ID
],
5967 nfs4_init_boot_verifier(clp
, &verifier
);
5968 args
.id_len
= nfs4_init_uniform_client_string(clp
, args
.id
,
5970 dprintk("NFS call exchange_id auth=%s, '%.*s'\n",
5971 clp
->cl_rpcclient
->cl_auth
->au_ops
->au_name
,
5972 args
.id_len
, args
.id
);
5974 res
.server_owner
= kzalloc(sizeof(struct nfs41_server_owner
),
5976 if (unlikely(res
.server_owner
== NULL
)) {
5981 res
.server_scope
= kzalloc(sizeof(struct nfs41_server_scope
),
5983 if (unlikely(res
.server_scope
== NULL
)) {
5985 goto out_server_owner
;
5988 res
.impl_id
= kzalloc(sizeof(struct nfs41_impl_id
), GFP_NOFS
);
5989 if (unlikely(res
.impl_id
== NULL
)) {
5991 goto out_server_scope
;
5994 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
5995 trace_nfs4_exchange_id(clp
, status
);
5997 status
= nfs4_check_cl_exchange_flags(res
.flags
);
6000 clp
->cl_clientid
= res
.clientid
;
6001 clp
->cl_exchange_flags
= (res
.flags
& ~EXCHGID4_FLAG_CONFIRMED_R
);
6002 if (!(res
.flags
& EXCHGID4_FLAG_CONFIRMED_R
))
6003 clp
->cl_seqid
= res
.seqid
;
6005 kfree(clp
->cl_serverowner
);
6006 clp
->cl_serverowner
= res
.server_owner
;
6007 res
.server_owner
= NULL
;
6009 /* use the most recent implementation id */
6010 kfree(clp
->cl_implid
);
6011 clp
->cl_implid
= res
.impl_id
;
6013 if (clp
->cl_serverscope
!= NULL
&&
6014 !nfs41_same_server_scope(clp
->cl_serverscope
,
6015 res
.server_scope
)) {
6016 dprintk("%s: server_scope mismatch detected\n",
6018 set_bit(NFS4CLNT_SERVER_SCOPE_MISMATCH
, &clp
->cl_state
);
6019 kfree(clp
->cl_serverscope
);
6020 clp
->cl_serverscope
= NULL
;
6023 if (clp
->cl_serverscope
== NULL
) {
6024 clp
->cl_serverscope
= res
.server_scope
;
6031 kfree(res
.server_owner
);
6033 kfree(res
.server_scope
);
6035 if (clp
->cl_implid
!= NULL
)
6036 dprintk("NFS reply exchange_id: Server Implementation ID: "
6037 "domain: %s, name: %s, date: %llu,%u\n",
6038 clp
->cl_implid
->domain
, clp
->cl_implid
->name
,
6039 clp
->cl_implid
->date
.seconds
,
6040 clp
->cl_implid
->date
.nseconds
);
6041 dprintk("NFS reply exchange_id: %d\n", status
);
6045 static int _nfs4_proc_destroy_clientid(struct nfs_client
*clp
,
6046 struct rpc_cred
*cred
)
6048 struct rpc_message msg
= {
6049 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_DESTROY_CLIENTID
],
6055 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
6056 trace_nfs4_destroy_clientid(clp
, status
);
6058 dprintk("NFS: Got error %d from the server %s on "
6059 "DESTROY_CLIENTID.", status
, clp
->cl_hostname
);
6063 static int nfs4_proc_destroy_clientid(struct nfs_client
*clp
,
6064 struct rpc_cred
*cred
)
6069 for (loop
= NFS4_MAX_LOOP_ON_RECOVER
; loop
!= 0; loop
--) {
6070 ret
= _nfs4_proc_destroy_clientid(clp
, cred
);
6072 case -NFS4ERR_DELAY
:
6073 case -NFS4ERR_CLIENTID_BUSY
:
6083 int nfs4_destroy_clientid(struct nfs_client
*clp
)
6085 struct rpc_cred
*cred
;
6088 if (clp
->cl_mvops
->minor_version
< 1)
6090 if (clp
->cl_exchange_flags
== 0)
6092 if (clp
->cl_preserve_clid
)
6094 cred
= nfs4_get_clid_cred(clp
);
6095 ret
= nfs4_proc_destroy_clientid(clp
, cred
);
6100 case -NFS4ERR_STALE_CLIENTID
:
6101 clp
->cl_exchange_flags
= 0;
6107 struct nfs4_get_lease_time_data
{
6108 struct nfs4_get_lease_time_args
*args
;
6109 struct nfs4_get_lease_time_res
*res
;
6110 struct nfs_client
*clp
;
6113 static void nfs4_get_lease_time_prepare(struct rpc_task
*task
,
6116 struct nfs4_get_lease_time_data
*data
=
6117 (struct nfs4_get_lease_time_data
*)calldata
;
6119 dprintk("--> %s\n", __func__
);
6120 /* just setup sequence, do not trigger session recovery
6121 since we're invoked within one */
6122 nfs41_setup_sequence(data
->clp
->cl_session
,
6123 &data
->args
->la_seq_args
,
6124 &data
->res
->lr_seq_res
,
6126 dprintk("<-- %s\n", __func__
);
6130 * Called from nfs4_state_manager thread for session setup, so don't recover
6131 * from sequence operation or clientid errors.
6133 static void nfs4_get_lease_time_done(struct rpc_task
*task
, void *calldata
)
6135 struct nfs4_get_lease_time_data
*data
=
6136 (struct nfs4_get_lease_time_data
*)calldata
;
6138 dprintk("--> %s\n", __func__
);
6139 if (!nfs41_sequence_done(task
, &data
->res
->lr_seq_res
))
6141 switch (task
->tk_status
) {
6142 case -NFS4ERR_DELAY
:
6143 case -NFS4ERR_GRACE
:
6144 dprintk("%s Retry: tk_status %d\n", __func__
, task
->tk_status
);
6145 rpc_delay(task
, NFS4_POLL_RETRY_MIN
);
6146 task
->tk_status
= 0;
6148 case -NFS4ERR_RETRY_UNCACHED_REP
:
6149 rpc_restart_call_prepare(task
);
6152 dprintk("<-- %s\n", __func__
);
6155 static const struct rpc_call_ops nfs4_get_lease_time_ops
= {
6156 .rpc_call_prepare
= nfs4_get_lease_time_prepare
,
6157 .rpc_call_done
= nfs4_get_lease_time_done
,
6160 int nfs4_proc_get_lease_time(struct nfs_client
*clp
, struct nfs_fsinfo
*fsinfo
)
6162 struct rpc_task
*task
;
6163 struct nfs4_get_lease_time_args args
;
6164 struct nfs4_get_lease_time_res res
= {
6165 .lr_fsinfo
= fsinfo
,
6167 struct nfs4_get_lease_time_data data
= {
6172 struct rpc_message msg
= {
6173 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GET_LEASE_TIME
],
6177 struct rpc_task_setup task_setup
= {
6178 .rpc_client
= clp
->cl_rpcclient
,
6179 .rpc_message
= &msg
,
6180 .callback_ops
= &nfs4_get_lease_time_ops
,
6181 .callback_data
= &data
,
6182 .flags
= RPC_TASK_TIMEOUT
,
6186 nfs41_init_sequence(&args
.la_seq_args
, &res
.lr_seq_res
, 0);
6187 nfs4_set_sequence_privileged(&args
.la_seq_args
);
6188 dprintk("--> %s\n", __func__
);
6189 task
= rpc_run_task(&task_setup
);
6192 status
= PTR_ERR(task
);
6194 status
= task
->tk_status
;
6197 dprintk("<-- %s return %d\n", __func__
, status
);
6203 * Initialize the values to be used by the client in CREATE_SESSION
6204 * If nfs4_init_session set the fore channel request and response sizes,
6207 * Set the back channel max_resp_sz_cached to zero to force the client to
6208 * always set csa_cachethis to FALSE because the current implementation
6209 * of the back channel DRC only supports caching the CB_SEQUENCE operation.
6211 static void nfs4_init_channel_attrs(struct nfs41_create_session_args
*args
)
6213 unsigned int max_rqst_sz
, max_resp_sz
;
6215 max_rqst_sz
= NFS_MAX_FILE_IO_SIZE
+ nfs41_maxwrite_overhead
;
6216 max_resp_sz
= NFS_MAX_FILE_IO_SIZE
+ nfs41_maxread_overhead
;
6218 /* Fore channel attributes */
6219 args
->fc_attrs
.max_rqst_sz
= max_rqst_sz
;
6220 args
->fc_attrs
.max_resp_sz
= max_resp_sz
;
6221 args
->fc_attrs
.max_ops
= NFS4_MAX_OPS
;
6222 args
->fc_attrs
.max_reqs
= max_session_slots
;
6224 dprintk("%s: Fore Channel : max_rqst_sz=%u max_resp_sz=%u "
6225 "max_ops=%u max_reqs=%u\n",
6227 args
->fc_attrs
.max_rqst_sz
, args
->fc_attrs
.max_resp_sz
,
6228 args
->fc_attrs
.max_ops
, args
->fc_attrs
.max_reqs
);
6230 /* Back channel attributes */
6231 args
->bc_attrs
.max_rqst_sz
= PAGE_SIZE
;
6232 args
->bc_attrs
.max_resp_sz
= PAGE_SIZE
;
6233 args
->bc_attrs
.max_resp_sz_cached
= 0;
6234 args
->bc_attrs
.max_ops
= NFS4_MAX_BACK_CHANNEL_OPS
;
6235 args
->bc_attrs
.max_reqs
= 1;
6237 dprintk("%s: Back Channel : max_rqst_sz=%u max_resp_sz=%u "
6238 "max_resp_sz_cached=%u max_ops=%u max_reqs=%u\n",
6240 args
->bc_attrs
.max_rqst_sz
, args
->bc_attrs
.max_resp_sz
,
6241 args
->bc_attrs
.max_resp_sz_cached
, args
->bc_attrs
.max_ops
,
6242 args
->bc_attrs
.max_reqs
);
6245 static int nfs4_verify_fore_channel_attrs(struct nfs41_create_session_args
*args
, struct nfs4_session
*session
)
6247 struct nfs4_channel_attrs
*sent
= &args
->fc_attrs
;
6248 struct nfs4_channel_attrs
*rcvd
= &session
->fc_attrs
;
6250 if (rcvd
->max_resp_sz
> sent
->max_resp_sz
)
6253 * Our requested max_ops is the minimum we need; we're not
6254 * prepared to break up compounds into smaller pieces than that.
6255 * So, no point even trying to continue if the server won't
6258 if (rcvd
->max_ops
< sent
->max_ops
)
6260 if (rcvd
->max_reqs
== 0)
6262 if (rcvd
->max_reqs
> NFS4_MAX_SLOT_TABLE
)
6263 rcvd
->max_reqs
= NFS4_MAX_SLOT_TABLE
;
6267 static int nfs4_verify_back_channel_attrs(struct nfs41_create_session_args
*args
, struct nfs4_session
*session
)
6269 struct nfs4_channel_attrs
*sent
= &args
->bc_attrs
;
6270 struct nfs4_channel_attrs
*rcvd
= &session
->bc_attrs
;
6272 if (rcvd
->max_rqst_sz
> sent
->max_rqst_sz
)
6274 if (rcvd
->max_resp_sz
< sent
->max_resp_sz
)
6276 if (rcvd
->max_resp_sz_cached
> sent
->max_resp_sz_cached
)
6278 /* These would render the backchannel useless: */
6279 if (rcvd
->max_ops
!= sent
->max_ops
)
6281 if (rcvd
->max_reqs
!= sent
->max_reqs
)
6286 static int nfs4_verify_channel_attrs(struct nfs41_create_session_args
*args
,
6287 struct nfs4_session
*session
)
6291 ret
= nfs4_verify_fore_channel_attrs(args
, session
);
6294 return nfs4_verify_back_channel_attrs(args
, session
);
6297 static int _nfs4_proc_create_session(struct nfs_client
*clp
,
6298 struct rpc_cred
*cred
)
6300 struct nfs4_session
*session
= clp
->cl_session
;
6301 struct nfs41_create_session_args args
= {
6303 .cb_program
= NFS4_CALLBACK
,
6305 struct nfs41_create_session_res res
= {
6308 struct rpc_message msg
= {
6309 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_CREATE_SESSION
],
6316 nfs4_init_channel_attrs(&args
);
6317 args
.flags
= (SESSION4_PERSIST
| SESSION4_BACK_CHAN
);
6319 status
= rpc_call_sync(session
->clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
6320 trace_nfs4_create_session(clp
, status
);
6323 /* Verify the session's negotiated channel_attrs values */
6324 status
= nfs4_verify_channel_attrs(&args
, session
);
6325 /* Increment the clientid slot sequence id */
6333 * Issues a CREATE_SESSION operation to the server.
6334 * It is the responsibility of the caller to verify the session is
6335 * expired before calling this routine.
6337 int nfs4_proc_create_session(struct nfs_client
*clp
, struct rpc_cred
*cred
)
6341 struct nfs4_session
*session
= clp
->cl_session
;
6343 dprintk("--> %s clp=%p session=%p\n", __func__
, clp
, session
);
6345 status
= _nfs4_proc_create_session(clp
, cred
);
6349 /* Init or reset the session slot tables */
6350 status
= nfs4_setup_session_slot_tables(session
);
6351 dprintk("slot table setup returned %d\n", status
);
6355 ptr
= (unsigned *)&session
->sess_id
.data
[0];
6356 dprintk("%s client>seqid %d sessionid %u:%u:%u:%u\n", __func__
,
6357 clp
->cl_seqid
, ptr
[0], ptr
[1], ptr
[2], ptr
[3]);
6359 dprintk("<-- %s\n", __func__
);
6364 * Issue the over-the-wire RPC DESTROY_SESSION.
6365 * The caller must serialize access to this routine.
6367 int nfs4_proc_destroy_session(struct nfs4_session
*session
,
6368 struct rpc_cred
*cred
)
6370 struct rpc_message msg
= {
6371 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_DESTROY_SESSION
],
6372 .rpc_argp
= session
,
6377 dprintk("--> nfs4_proc_destroy_session\n");
6379 /* session is still being setup */
6380 if (session
->clp
->cl_cons_state
!= NFS_CS_READY
)
6383 status
= rpc_call_sync(session
->clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
6384 trace_nfs4_destroy_session(session
->clp
, status
);
6387 dprintk("NFS: Got error %d from the server on DESTROY_SESSION. "
6388 "Session has been destroyed regardless...\n", status
);
6390 dprintk("<-- nfs4_proc_destroy_session\n");
6395 * Renew the cl_session lease.
6397 struct nfs4_sequence_data
{
6398 struct nfs_client
*clp
;
6399 struct nfs4_sequence_args args
;
6400 struct nfs4_sequence_res res
;
6403 static void nfs41_sequence_release(void *data
)
6405 struct nfs4_sequence_data
*calldata
= data
;
6406 struct nfs_client
*clp
= calldata
->clp
;
6408 if (atomic_read(&clp
->cl_count
) > 1)
6409 nfs4_schedule_state_renewal(clp
);
6410 nfs_put_client(clp
);
6414 static int nfs41_sequence_handle_errors(struct rpc_task
*task
, struct nfs_client
*clp
)
6416 switch(task
->tk_status
) {
6417 case -NFS4ERR_DELAY
:
6418 rpc_delay(task
, NFS4_POLL_RETRY_MAX
);
6421 nfs4_schedule_lease_recovery(clp
);
6426 static void nfs41_sequence_call_done(struct rpc_task
*task
, void *data
)
6428 struct nfs4_sequence_data
*calldata
= data
;
6429 struct nfs_client
*clp
= calldata
->clp
;
6431 if (!nfs41_sequence_done(task
, task
->tk_msg
.rpc_resp
))
6434 trace_nfs4_sequence(clp
, task
->tk_status
);
6435 if (task
->tk_status
< 0) {
6436 dprintk("%s ERROR %d\n", __func__
, task
->tk_status
);
6437 if (atomic_read(&clp
->cl_count
) == 1)
6440 if (nfs41_sequence_handle_errors(task
, clp
) == -EAGAIN
) {
6441 rpc_restart_call_prepare(task
);
6445 dprintk("%s rpc_cred %p\n", __func__
, task
->tk_msg
.rpc_cred
);
6447 dprintk("<-- %s\n", __func__
);
6450 static void nfs41_sequence_prepare(struct rpc_task
*task
, void *data
)
6452 struct nfs4_sequence_data
*calldata
= data
;
6453 struct nfs_client
*clp
= calldata
->clp
;
6454 struct nfs4_sequence_args
*args
;
6455 struct nfs4_sequence_res
*res
;
6457 args
= task
->tk_msg
.rpc_argp
;
6458 res
= task
->tk_msg
.rpc_resp
;
6460 nfs41_setup_sequence(clp
->cl_session
, args
, res
, task
);
6463 static const struct rpc_call_ops nfs41_sequence_ops
= {
6464 .rpc_call_done
= nfs41_sequence_call_done
,
6465 .rpc_call_prepare
= nfs41_sequence_prepare
,
6466 .rpc_release
= nfs41_sequence_release
,
6469 static struct rpc_task
*_nfs41_proc_sequence(struct nfs_client
*clp
,
6470 struct rpc_cred
*cred
,
6473 struct nfs4_sequence_data
*calldata
;
6474 struct rpc_message msg
= {
6475 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SEQUENCE
],
6478 struct rpc_task_setup task_setup_data
= {
6479 .rpc_client
= clp
->cl_rpcclient
,
6480 .rpc_message
= &msg
,
6481 .callback_ops
= &nfs41_sequence_ops
,
6482 .flags
= RPC_TASK_ASYNC
| RPC_TASK_TIMEOUT
,
6485 if (!atomic_inc_not_zero(&clp
->cl_count
))
6486 return ERR_PTR(-EIO
);
6487 calldata
= kzalloc(sizeof(*calldata
), GFP_NOFS
);
6488 if (calldata
== NULL
) {
6489 nfs_put_client(clp
);
6490 return ERR_PTR(-ENOMEM
);
6492 nfs41_init_sequence(&calldata
->args
, &calldata
->res
, 0);
6494 nfs4_set_sequence_privileged(&calldata
->args
);
6495 msg
.rpc_argp
= &calldata
->args
;
6496 msg
.rpc_resp
= &calldata
->res
;
6497 calldata
->clp
= clp
;
6498 task_setup_data
.callback_data
= calldata
;
6500 return rpc_run_task(&task_setup_data
);
6503 static int nfs41_proc_async_sequence(struct nfs_client
*clp
, struct rpc_cred
*cred
, unsigned renew_flags
)
6505 struct rpc_task
*task
;
6508 if ((renew_flags
& NFS4_RENEW_TIMEOUT
) == 0)
6510 task
= _nfs41_proc_sequence(clp
, cred
, false);
6512 ret
= PTR_ERR(task
);
6514 rpc_put_task_async(task
);
6515 dprintk("<-- %s status=%d\n", __func__
, ret
);
6519 static int nfs4_proc_sequence(struct nfs_client
*clp
, struct rpc_cred
*cred
)
6521 struct rpc_task
*task
;
6524 task
= _nfs41_proc_sequence(clp
, cred
, true);
6526 ret
= PTR_ERR(task
);
6529 ret
= rpc_wait_for_completion_task(task
);
6531 struct nfs4_sequence_res
*res
= task
->tk_msg
.rpc_resp
;
6533 if (task
->tk_status
== 0)
6534 nfs41_handle_sequence_flag_errors(clp
, res
->sr_status_flags
);
6535 ret
= task
->tk_status
;
6539 dprintk("<-- %s status=%d\n", __func__
, ret
);
6543 struct nfs4_reclaim_complete_data
{
6544 struct nfs_client
*clp
;
6545 struct nfs41_reclaim_complete_args arg
;
6546 struct nfs41_reclaim_complete_res res
;
6549 static void nfs4_reclaim_complete_prepare(struct rpc_task
*task
, void *data
)
6551 struct nfs4_reclaim_complete_data
*calldata
= data
;
6553 nfs41_setup_sequence(calldata
->clp
->cl_session
,
6554 &calldata
->arg
.seq_args
,
6555 &calldata
->res
.seq_res
,
6559 static int nfs41_reclaim_complete_handle_errors(struct rpc_task
*task
, struct nfs_client
*clp
)
6561 switch(task
->tk_status
) {
6563 case -NFS4ERR_COMPLETE_ALREADY
:
6564 case -NFS4ERR_WRONG_CRED
: /* What to do here? */
6566 case -NFS4ERR_DELAY
:
6567 rpc_delay(task
, NFS4_POLL_RETRY_MAX
);
6569 case -NFS4ERR_RETRY_UNCACHED_REP
:
6572 nfs4_schedule_lease_recovery(clp
);
6577 static void nfs4_reclaim_complete_done(struct rpc_task
*task
, void *data
)
6579 struct nfs4_reclaim_complete_data
*calldata
= data
;
6580 struct nfs_client
*clp
= calldata
->clp
;
6581 struct nfs4_sequence_res
*res
= &calldata
->res
.seq_res
;
6583 dprintk("--> %s\n", __func__
);
6584 if (!nfs41_sequence_done(task
, res
))
6587 trace_nfs4_reclaim_complete(clp
, task
->tk_status
);
6588 if (nfs41_reclaim_complete_handle_errors(task
, clp
) == -EAGAIN
) {
6589 rpc_restart_call_prepare(task
);
6592 dprintk("<-- %s\n", __func__
);
6595 static void nfs4_free_reclaim_complete_data(void *data
)
6597 struct nfs4_reclaim_complete_data
*calldata
= data
;
6602 static const struct rpc_call_ops nfs4_reclaim_complete_call_ops
= {
6603 .rpc_call_prepare
= nfs4_reclaim_complete_prepare
,
6604 .rpc_call_done
= nfs4_reclaim_complete_done
,
6605 .rpc_release
= nfs4_free_reclaim_complete_data
,
6609 * Issue a global reclaim complete.
6611 static int nfs41_proc_reclaim_complete(struct nfs_client
*clp
,
6612 struct rpc_cred
*cred
)
6614 struct nfs4_reclaim_complete_data
*calldata
;
6615 struct rpc_task
*task
;
6616 struct rpc_message msg
= {
6617 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RECLAIM_COMPLETE
],
6620 struct rpc_task_setup task_setup_data
= {
6621 .rpc_client
= clp
->cl_rpcclient
,
6622 .rpc_message
= &msg
,
6623 .callback_ops
= &nfs4_reclaim_complete_call_ops
,
6624 .flags
= RPC_TASK_ASYNC
,
6626 int status
= -ENOMEM
;
6628 dprintk("--> %s\n", __func__
);
6629 calldata
= kzalloc(sizeof(*calldata
), GFP_NOFS
);
6630 if (calldata
== NULL
)
6632 calldata
->clp
= clp
;
6633 calldata
->arg
.one_fs
= 0;
6635 nfs41_init_sequence(&calldata
->arg
.seq_args
, &calldata
->res
.seq_res
, 0);
6636 nfs4_set_sequence_privileged(&calldata
->arg
.seq_args
);
6637 msg
.rpc_argp
= &calldata
->arg
;
6638 msg
.rpc_resp
= &calldata
->res
;
6639 task_setup_data
.callback_data
= calldata
;
6640 task
= rpc_run_task(&task_setup_data
);
6642 status
= PTR_ERR(task
);
6645 status
= nfs4_wait_for_completion_rpc_task(task
);
6647 status
= task
->tk_status
;
6651 dprintk("<-- %s status=%d\n", __func__
, status
);
6656 nfs4_layoutget_prepare(struct rpc_task
*task
, void *calldata
)
6658 struct nfs4_layoutget
*lgp
= calldata
;
6659 struct nfs_server
*server
= NFS_SERVER(lgp
->args
.inode
);
6660 struct nfs4_session
*session
= nfs4_get_session(server
);
6662 dprintk("--> %s\n", __func__
);
6663 /* Note the is a race here, where a CB_LAYOUTRECALL can come in
6664 * right now covering the LAYOUTGET we are about to send.
6665 * However, that is not so catastrophic, and there seems
6666 * to be no way to prevent it completely.
6668 if (nfs41_setup_sequence(session
, &lgp
->args
.seq_args
,
6669 &lgp
->res
.seq_res
, task
))
6671 if (pnfs_choose_layoutget_stateid(&lgp
->args
.stateid
,
6672 NFS_I(lgp
->args
.inode
)->layout
,
6673 lgp
->args
.ctx
->state
)) {
6674 rpc_exit(task
, NFS4_OK
);
6678 static void nfs4_layoutget_done(struct rpc_task
*task
, void *calldata
)
6680 struct nfs4_layoutget
*lgp
= calldata
;
6681 struct inode
*inode
= lgp
->args
.inode
;
6682 struct nfs_server
*server
= NFS_SERVER(inode
);
6683 struct pnfs_layout_hdr
*lo
;
6684 struct nfs4_state
*state
= NULL
;
6685 unsigned long timeo
, giveup
;
6687 dprintk("--> %s\n", __func__
);
6689 if (!nfs41_sequence_done(task
, &lgp
->res
.seq_res
))
6692 switch (task
->tk_status
) {
6695 case -NFS4ERR_LAYOUTTRYLATER
:
6696 case -NFS4ERR_RECALLCONFLICT
:
6697 timeo
= rpc_get_timeout(task
->tk_client
);
6698 giveup
= lgp
->args
.timestamp
+ timeo
;
6699 if (time_after(giveup
, jiffies
))
6700 task
->tk_status
= -NFS4ERR_DELAY
;
6702 case -NFS4ERR_EXPIRED
:
6703 case -NFS4ERR_BAD_STATEID
:
6704 spin_lock(&inode
->i_lock
);
6705 lo
= NFS_I(inode
)->layout
;
6706 if (!lo
|| list_empty(&lo
->plh_segs
)) {
6707 spin_unlock(&inode
->i_lock
);
6708 /* If the open stateid was bad, then recover it. */
6709 state
= lgp
->args
.ctx
->state
;
6713 pnfs_mark_matching_lsegs_invalid(lo
, &head
, NULL
);
6714 spin_unlock(&inode
->i_lock
);
6715 /* Mark the bad layout state as invalid, then
6716 * retry using the open stateid. */
6717 pnfs_free_lseg_list(&head
);
6720 if (nfs4_async_handle_error(task
, server
, state
) == -EAGAIN
)
6721 rpc_restart_call_prepare(task
);
6723 dprintk("<-- %s\n", __func__
);
6726 static size_t max_response_pages(struct nfs_server
*server
)
6728 u32 max_resp_sz
= server
->nfs_client
->cl_session
->fc_attrs
.max_resp_sz
;
6729 return nfs_page_array_len(0, max_resp_sz
);
6732 static void nfs4_free_pages(struct page
**pages
, size_t size
)
6739 for (i
= 0; i
< size
; i
++) {
6742 __free_page(pages
[i
]);
6747 static struct page
**nfs4_alloc_pages(size_t size
, gfp_t gfp_flags
)
6749 struct page
**pages
;
6752 pages
= kcalloc(size
, sizeof(struct page
*), gfp_flags
);
6754 dprintk("%s: can't alloc array of %zu pages\n", __func__
, size
);
6758 for (i
= 0; i
< size
; i
++) {
6759 pages
[i
] = alloc_page(gfp_flags
);
6761 dprintk("%s: failed to allocate page\n", __func__
);
6762 nfs4_free_pages(pages
, size
);
6770 static void nfs4_layoutget_release(void *calldata
)
6772 struct nfs4_layoutget
*lgp
= calldata
;
6773 struct inode
*inode
= lgp
->args
.inode
;
6774 struct nfs_server
*server
= NFS_SERVER(inode
);
6775 size_t max_pages
= max_response_pages(server
);
6777 dprintk("--> %s\n", __func__
);
6778 nfs4_free_pages(lgp
->args
.layout
.pages
, max_pages
);
6779 pnfs_put_layout_hdr(NFS_I(inode
)->layout
);
6780 put_nfs_open_context(lgp
->args
.ctx
);
6782 dprintk("<-- %s\n", __func__
);
6785 static const struct rpc_call_ops nfs4_layoutget_call_ops
= {
6786 .rpc_call_prepare
= nfs4_layoutget_prepare
,
6787 .rpc_call_done
= nfs4_layoutget_done
,
6788 .rpc_release
= nfs4_layoutget_release
,
6791 struct pnfs_layout_segment
*
6792 nfs4_proc_layoutget(struct nfs4_layoutget
*lgp
, gfp_t gfp_flags
)
6794 struct inode
*inode
= lgp
->args
.inode
;
6795 struct nfs_server
*server
= NFS_SERVER(inode
);
6796 size_t max_pages
= max_response_pages(server
);
6797 struct rpc_task
*task
;
6798 struct rpc_message msg
= {
6799 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LAYOUTGET
],
6800 .rpc_argp
= &lgp
->args
,
6801 .rpc_resp
= &lgp
->res
,
6802 .rpc_cred
= lgp
->cred
,
6804 struct rpc_task_setup task_setup_data
= {
6805 .rpc_client
= server
->client
,
6806 .rpc_message
= &msg
,
6807 .callback_ops
= &nfs4_layoutget_call_ops
,
6808 .callback_data
= lgp
,
6809 .flags
= RPC_TASK_ASYNC
,
6811 struct pnfs_layout_segment
*lseg
= NULL
;
6814 dprintk("--> %s\n", __func__
);
6816 lgp
->args
.layout
.pages
= nfs4_alloc_pages(max_pages
, gfp_flags
);
6817 if (!lgp
->args
.layout
.pages
) {
6818 nfs4_layoutget_release(lgp
);
6819 return ERR_PTR(-ENOMEM
);
6821 lgp
->args
.layout
.pglen
= max_pages
* PAGE_SIZE
;
6822 lgp
->args
.timestamp
= jiffies
;
6824 lgp
->res
.layoutp
= &lgp
->args
.layout
;
6825 lgp
->res
.seq_res
.sr_slot
= NULL
;
6826 nfs41_init_sequence(&lgp
->args
.seq_args
, &lgp
->res
.seq_res
, 0);
6828 /* nfs4_layoutget_release calls pnfs_put_layout_hdr */
6829 pnfs_get_layout_hdr(NFS_I(inode
)->layout
);
6831 task
= rpc_run_task(&task_setup_data
);
6833 return ERR_CAST(task
);
6834 status
= nfs4_wait_for_completion_rpc_task(task
);
6836 status
= task
->tk_status
;
6837 /* if layoutp->len is 0, nfs4_layoutget_prepare called rpc_exit */
6838 if (status
== 0 && lgp
->res
.layoutp
->len
)
6839 lseg
= pnfs_layout_process(lgp
);
6841 dprintk("<-- %s status=%d\n", __func__
, status
);
6843 return ERR_PTR(status
);
6848 nfs4_layoutreturn_prepare(struct rpc_task
*task
, void *calldata
)
6850 struct nfs4_layoutreturn
*lrp
= calldata
;
6852 dprintk("--> %s\n", __func__
);
6853 nfs41_setup_sequence(lrp
->clp
->cl_session
,
6854 &lrp
->args
.seq_args
,
6859 static void nfs4_layoutreturn_done(struct rpc_task
*task
, void *calldata
)
6861 struct nfs4_layoutreturn
*lrp
= calldata
;
6862 struct nfs_server
*server
;
6864 dprintk("--> %s\n", __func__
);
6866 if (!nfs41_sequence_done(task
, &lrp
->res
.seq_res
))
6869 server
= NFS_SERVER(lrp
->args
.inode
);
6870 if (nfs4_async_handle_error(task
, server
, NULL
) == -EAGAIN
) {
6871 rpc_restart_call_prepare(task
);
6874 dprintk("<-- %s\n", __func__
);
6877 static void nfs4_layoutreturn_release(void *calldata
)
6879 struct nfs4_layoutreturn
*lrp
= calldata
;
6880 struct pnfs_layout_hdr
*lo
= lrp
->args
.layout
;
6882 dprintk("--> %s\n", __func__
);
6883 spin_lock(&lo
->plh_inode
->i_lock
);
6884 if (lrp
->res
.lrs_present
)
6885 pnfs_set_layout_stateid(lo
, &lrp
->res
.stateid
, true);
6886 lo
->plh_block_lgets
--;
6887 spin_unlock(&lo
->plh_inode
->i_lock
);
6888 pnfs_put_layout_hdr(lrp
->args
.layout
);
6890 dprintk("<-- %s\n", __func__
);
6893 static const struct rpc_call_ops nfs4_layoutreturn_call_ops
= {
6894 .rpc_call_prepare
= nfs4_layoutreturn_prepare
,
6895 .rpc_call_done
= nfs4_layoutreturn_done
,
6896 .rpc_release
= nfs4_layoutreturn_release
,
6899 int nfs4_proc_layoutreturn(struct nfs4_layoutreturn
*lrp
)
6901 struct rpc_task
*task
;
6902 struct rpc_message msg
= {
6903 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LAYOUTRETURN
],
6904 .rpc_argp
= &lrp
->args
,
6905 .rpc_resp
= &lrp
->res
,
6906 .rpc_cred
= lrp
->cred
,
6908 struct rpc_task_setup task_setup_data
= {
6909 .rpc_client
= NFS_SERVER(lrp
->args
.inode
)->client
,
6910 .rpc_message
= &msg
,
6911 .callback_ops
= &nfs4_layoutreturn_call_ops
,
6912 .callback_data
= lrp
,
6916 dprintk("--> %s\n", __func__
);
6917 nfs41_init_sequence(&lrp
->args
.seq_args
, &lrp
->res
.seq_res
, 1);
6918 task
= rpc_run_task(&task_setup_data
);
6920 return PTR_ERR(task
);
6921 status
= task
->tk_status
;
6922 dprintk("<-- %s status=%d\n", __func__
, status
);
6928 * Retrieve the list of Data Server devices from the MDS.
6930 static int _nfs4_getdevicelist(struct nfs_server
*server
,
6931 const struct nfs_fh
*fh
,
6932 struct pnfs_devicelist
*devlist
)
6934 struct nfs4_getdevicelist_args args
= {
6936 .layoutclass
= server
->pnfs_curr_ld
->id
,
6938 struct nfs4_getdevicelist_res res
= {
6941 struct rpc_message msg
= {
6942 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GETDEVICELIST
],
6948 dprintk("--> %s\n", __func__
);
6949 status
= nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
,
6951 dprintk("<-- %s status=%d\n", __func__
, status
);
6955 int nfs4_proc_getdevicelist(struct nfs_server
*server
,
6956 const struct nfs_fh
*fh
,
6957 struct pnfs_devicelist
*devlist
)
6959 struct nfs4_exception exception
= { };
6963 err
= nfs4_handle_exception(server
,
6964 _nfs4_getdevicelist(server
, fh
, devlist
),
6966 } while (exception
.retry
);
6968 dprintk("%s: err=%d, num_devs=%u\n", __func__
,
6969 err
, devlist
->num_devs
);
6973 EXPORT_SYMBOL_GPL(nfs4_proc_getdevicelist
);
6976 _nfs4_proc_getdeviceinfo(struct nfs_server
*server
,
6977 struct pnfs_device
*pdev
,
6978 struct rpc_cred
*cred
)
6980 struct nfs4_getdeviceinfo_args args
= {
6983 struct nfs4_getdeviceinfo_res res
= {
6986 struct rpc_message msg
= {
6987 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GETDEVICEINFO
],
6994 dprintk("--> %s\n", __func__
);
6995 status
= nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
6996 dprintk("<-- %s status=%d\n", __func__
, status
);
7001 int nfs4_proc_getdeviceinfo(struct nfs_server
*server
,
7002 struct pnfs_device
*pdev
,
7003 struct rpc_cred
*cred
)
7005 struct nfs4_exception exception
= { };
7009 err
= nfs4_handle_exception(server
,
7010 _nfs4_proc_getdeviceinfo(server
, pdev
, cred
),
7012 } while (exception
.retry
);
7015 EXPORT_SYMBOL_GPL(nfs4_proc_getdeviceinfo
);
7017 static void nfs4_layoutcommit_prepare(struct rpc_task
*task
, void *calldata
)
7019 struct nfs4_layoutcommit_data
*data
= calldata
;
7020 struct nfs_server
*server
= NFS_SERVER(data
->args
.inode
);
7021 struct nfs4_session
*session
= nfs4_get_session(server
);
7023 nfs41_setup_sequence(session
,
7024 &data
->args
.seq_args
,
7030 nfs4_layoutcommit_done(struct rpc_task
*task
, void *calldata
)
7032 struct nfs4_layoutcommit_data
*data
= calldata
;
7033 struct nfs_server
*server
= NFS_SERVER(data
->args
.inode
);
7035 if (!nfs41_sequence_done(task
, &data
->res
.seq_res
))
7038 switch (task
->tk_status
) { /* Just ignore these failures */
7039 case -NFS4ERR_DELEG_REVOKED
: /* layout was recalled */
7040 case -NFS4ERR_BADIOMODE
: /* no IOMODE_RW layout for range */
7041 case -NFS4ERR_BADLAYOUT
: /* no layout */
7042 case -NFS4ERR_GRACE
: /* loca_recalim always false */
7043 task
->tk_status
= 0;
7046 nfs_post_op_update_inode_force_wcc(data
->args
.inode
,
7050 if (nfs4_async_handle_error(task
, server
, NULL
) == -EAGAIN
) {
7051 rpc_restart_call_prepare(task
);
7057 static void nfs4_layoutcommit_release(void *calldata
)
7059 struct nfs4_layoutcommit_data
*data
= calldata
;
7061 pnfs_cleanup_layoutcommit(data
);
7062 put_rpccred(data
->cred
);
7066 static const struct rpc_call_ops nfs4_layoutcommit_ops
= {
7067 .rpc_call_prepare
= nfs4_layoutcommit_prepare
,
7068 .rpc_call_done
= nfs4_layoutcommit_done
,
7069 .rpc_release
= nfs4_layoutcommit_release
,
7073 nfs4_proc_layoutcommit(struct nfs4_layoutcommit_data
*data
, bool sync
)
7075 struct rpc_message msg
= {
7076 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LAYOUTCOMMIT
],
7077 .rpc_argp
= &data
->args
,
7078 .rpc_resp
= &data
->res
,
7079 .rpc_cred
= data
->cred
,
7081 struct rpc_task_setup task_setup_data
= {
7082 .task
= &data
->task
,
7083 .rpc_client
= NFS_CLIENT(data
->args
.inode
),
7084 .rpc_message
= &msg
,
7085 .callback_ops
= &nfs4_layoutcommit_ops
,
7086 .callback_data
= data
,
7087 .flags
= RPC_TASK_ASYNC
,
7089 struct rpc_task
*task
;
7092 dprintk("NFS: %4d initiating layoutcommit call. sync %d "
7093 "lbw: %llu inode %lu\n",
7094 data
->task
.tk_pid
, sync
,
7095 data
->args
.lastbytewritten
,
7096 data
->args
.inode
->i_ino
);
7098 nfs41_init_sequence(&data
->args
.seq_args
, &data
->res
.seq_res
, 1);
7099 task
= rpc_run_task(&task_setup_data
);
7101 return PTR_ERR(task
);
7104 status
= nfs4_wait_for_completion_rpc_task(task
);
7107 status
= task
->tk_status
;
7109 dprintk("%s: status %d\n", __func__
, status
);
7115 * Use the state managment nfs_client cl_rpcclient, which uses krb5i (if
7116 * possible) as per RFC3530bis and RFC5661 Security Considerations sections
7119 _nfs41_proc_secinfo_no_name(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
7120 struct nfs_fsinfo
*info
, struct nfs4_secinfo_flavors
*flavors
)
7122 struct nfs41_secinfo_no_name_args args
= {
7123 .style
= SECINFO_STYLE_CURRENT_FH
,
7125 struct nfs4_secinfo_res res
= {
7128 struct rpc_message msg
= {
7129 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SECINFO_NO_NAME
],
7133 return nfs4_call_sync(server
->nfs_client
->cl_rpcclient
, server
, &msg
,
7134 &args
.seq_args
, &res
.seq_res
, 0);
7138 nfs41_proc_secinfo_no_name(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
7139 struct nfs_fsinfo
*info
, struct nfs4_secinfo_flavors
*flavors
)
7141 struct nfs4_exception exception
= { };
7144 err
= _nfs41_proc_secinfo_no_name(server
, fhandle
, info
, flavors
);
7147 case -NFS4ERR_WRONGSEC
:
7148 case -NFS4ERR_NOTSUPP
:
7151 err
= nfs4_handle_exception(server
, err
, &exception
);
7153 } while (exception
.retry
);
7159 nfs41_find_root_sec(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
7160 struct nfs_fsinfo
*info
)
7164 rpc_authflavor_t flavor
;
7165 struct nfs4_secinfo_flavors
*flavors
;
7167 page
= alloc_page(GFP_KERNEL
);
7173 flavors
= page_address(page
);
7174 err
= nfs41_proc_secinfo_no_name(server
, fhandle
, info
, flavors
);
7177 * Fall back on "guess and check" method if
7178 * the server doesn't support SECINFO_NO_NAME
7180 if (err
== -NFS4ERR_WRONGSEC
|| err
== -NFS4ERR_NOTSUPP
) {
7181 err
= nfs4_find_root_sec(server
, fhandle
, info
);
7187 flavor
= nfs_find_best_sec(flavors
);
7189 err
= nfs4_lookup_root_sec(server
, fhandle
, info
, flavor
);
7199 static int _nfs41_test_stateid(struct nfs_server
*server
,
7200 nfs4_stateid
*stateid
,
7201 struct rpc_cred
*cred
)
7204 struct nfs41_test_stateid_args args
= {
7207 struct nfs41_test_stateid_res res
;
7208 struct rpc_message msg
= {
7209 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_TEST_STATEID
],
7215 dprintk("NFS call test_stateid %p\n", stateid
);
7216 nfs41_init_sequence(&args
.seq_args
, &res
.seq_res
, 0);
7217 nfs4_set_sequence_privileged(&args
.seq_args
);
7218 status
= nfs4_call_sync_sequence(server
->client
, server
, &msg
,
7219 &args
.seq_args
, &res
.seq_res
);
7220 if (status
!= NFS_OK
) {
7221 dprintk("NFS reply test_stateid: failed, %d\n", status
);
7224 dprintk("NFS reply test_stateid: succeeded, %d\n", -res
.status
);
7229 * nfs41_test_stateid - perform a TEST_STATEID operation
7231 * @server: server / transport on which to perform the operation
7232 * @stateid: state ID to test
7235 * Returns NFS_OK if the server recognizes that "stateid" is valid.
7236 * Otherwise a negative NFS4ERR value is returned if the operation
7237 * failed or the state ID is not currently valid.
7239 static int nfs41_test_stateid(struct nfs_server
*server
,
7240 nfs4_stateid
*stateid
,
7241 struct rpc_cred
*cred
)
7243 struct nfs4_exception exception
= { };
7246 err
= _nfs41_test_stateid(server
, stateid
, cred
);
7247 if (err
!= -NFS4ERR_DELAY
)
7249 nfs4_handle_exception(server
, err
, &exception
);
7250 } while (exception
.retry
);
7254 struct nfs_free_stateid_data
{
7255 struct nfs_server
*server
;
7256 struct nfs41_free_stateid_args args
;
7257 struct nfs41_free_stateid_res res
;
7260 static void nfs41_free_stateid_prepare(struct rpc_task
*task
, void *calldata
)
7262 struct nfs_free_stateid_data
*data
= calldata
;
7263 nfs41_setup_sequence(nfs4_get_session(data
->server
),
7264 &data
->args
.seq_args
,
7269 static void nfs41_free_stateid_done(struct rpc_task
*task
, void *calldata
)
7271 struct nfs_free_stateid_data
*data
= calldata
;
7273 nfs41_sequence_done(task
, &data
->res
.seq_res
);
7275 switch (task
->tk_status
) {
7276 case -NFS4ERR_DELAY
:
7277 if (nfs4_async_handle_error(task
, data
->server
, NULL
) == -EAGAIN
)
7278 rpc_restart_call_prepare(task
);
7282 static void nfs41_free_stateid_release(void *calldata
)
7287 static const struct rpc_call_ops nfs41_free_stateid_ops
= {
7288 .rpc_call_prepare
= nfs41_free_stateid_prepare
,
7289 .rpc_call_done
= nfs41_free_stateid_done
,
7290 .rpc_release
= nfs41_free_stateid_release
,
7293 static struct rpc_task
*_nfs41_free_stateid(struct nfs_server
*server
,
7294 nfs4_stateid
*stateid
,
7295 struct rpc_cred
*cred
,
7298 struct rpc_message msg
= {
7299 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_FREE_STATEID
],
7302 struct rpc_task_setup task_setup
= {
7303 .rpc_client
= server
->client
,
7304 .rpc_message
= &msg
,
7305 .callback_ops
= &nfs41_free_stateid_ops
,
7306 .flags
= RPC_TASK_ASYNC
,
7308 struct nfs_free_stateid_data
*data
;
7310 dprintk("NFS call free_stateid %p\n", stateid
);
7311 data
= kmalloc(sizeof(*data
), GFP_NOFS
);
7313 return ERR_PTR(-ENOMEM
);
7314 data
->server
= server
;
7315 nfs4_stateid_copy(&data
->args
.stateid
, stateid
);
7317 task_setup
.callback_data
= data
;
7319 msg
.rpc_argp
= &data
->args
;
7320 msg
.rpc_resp
= &data
->res
;
7321 nfs41_init_sequence(&data
->args
.seq_args
, &data
->res
.seq_res
, 0);
7323 nfs4_set_sequence_privileged(&data
->args
.seq_args
);
7325 return rpc_run_task(&task_setup
);
7329 * nfs41_free_stateid - perform a FREE_STATEID operation
7331 * @server: server / transport on which to perform the operation
7332 * @stateid: state ID to release
7335 * Returns NFS_OK if the server freed "stateid". Otherwise a
7336 * negative NFS4ERR value is returned.
7338 static int nfs41_free_stateid(struct nfs_server
*server
,
7339 nfs4_stateid
*stateid
,
7340 struct rpc_cred
*cred
)
7342 struct rpc_task
*task
;
7345 task
= _nfs41_free_stateid(server
, stateid
, cred
, true);
7347 return PTR_ERR(task
);
7348 ret
= rpc_wait_for_completion_task(task
);
7350 ret
= task
->tk_status
;
7355 static int nfs41_free_lock_state(struct nfs_server
*server
, struct nfs4_lock_state
*lsp
)
7357 struct rpc_task
*task
;
7358 struct rpc_cred
*cred
= lsp
->ls_state
->owner
->so_cred
;
7360 task
= _nfs41_free_stateid(server
, &lsp
->ls_stateid
, cred
, false);
7361 nfs4_free_lock_state(server
, lsp
);
7363 return PTR_ERR(task
);
7368 static bool nfs41_match_stateid(const nfs4_stateid
*s1
,
7369 const nfs4_stateid
*s2
)
7371 if (memcmp(s1
->other
, s2
->other
, sizeof(s1
->other
)) != 0)
7374 if (s1
->seqid
== s2
->seqid
)
7376 if (s1
->seqid
== 0 || s2
->seqid
== 0)
7382 #endif /* CONFIG_NFS_V4_1 */
7384 static bool nfs4_match_stateid(const nfs4_stateid
*s1
,
7385 const nfs4_stateid
*s2
)
7387 return nfs4_stateid_match(s1
, s2
);
7391 static const struct nfs4_state_recovery_ops nfs40_reboot_recovery_ops
= {
7392 .owner_flag_bit
= NFS_OWNER_RECLAIM_REBOOT
,
7393 .state_flag_bit
= NFS_STATE_RECLAIM_REBOOT
,
7394 .recover_open
= nfs4_open_reclaim
,
7395 .recover_lock
= nfs4_lock_reclaim
,
7396 .establish_clid
= nfs4_init_clientid
,
7397 .detect_trunking
= nfs40_discover_server_trunking
,
7400 #if defined(CONFIG_NFS_V4_1)
7401 static const struct nfs4_state_recovery_ops nfs41_reboot_recovery_ops
= {
7402 .owner_flag_bit
= NFS_OWNER_RECLAIM_REBOOT
,
7403 .state_flag_bit
= NFS_STATE_RECLAIM_REBOOT
,
7404 .recover_open
= nfs4_open_reclaim
,
7405 .recover_lock
= nfs4_lock_reclaim
,
7406 .establish_clid
= nfs41_init_clientid
,
7407 .reclaim_complete
= nfs41_proc_reclaim_complete
,
7408 .detect_trunking
= nfs41_discover_server_trunking
,
7410 #endif /* CONFIG_NFS_V4_1 */
7412 static const struct nfs4_state_recovery_ops nfs40_nograce_recovery_ops
= {
7413 .owner_flag_bit
= NFS_OWNER_RECLAIM_NOGRACE
,
7414 .state_flag_bit
= NFS_STATE_RECLAIM_NOGRACE
,
7415 .recover_open
= nfs4_open_expired
,
7416 .recover_lock
= nfs4_lock_expired
,
7417 .establish_clid
= nfs4_init_clientid
,
7420 #if defined(CONFIG_NFS_V4_1)
7421 static const struct nfs4_state_recovery_ops nfs41_nograce_recovery_ops
= {
7422 .owner_flag_bit
= NFS_OWNER_RECLAIM_NOGRACE
,
7423 .state_flag_bit
= NFS_STATE_RECLAIM_NOGRACE
,
7424 .recover_open
= nfs41_open_expired
,
7425 .recover_lock
= nfs41_lock_expired
,
7426 .establish_clid
= nfs41_init_clientid
,
7428 #endif /* CONFIG_NFS_V4_1 */
7430 static const struct nfs4_state_maintenance_ops nfs40_state_renewal_ops
= {
7431 .sched_state_renewal
= nfs4_proc_async_renew
,
7432 .get_state_renewal_cred_locked
= nfs4_get_renew_cred_locked
,
7433 .renew_lease
= nfs4_proc_renew
,
7436 #if defined(CONFIG_NFS_V4_1)
7437 static const struct nfs4_state_maintenance_ops nfs41_state_renewal_ops
= {
7438 .sched_state_renewal
= nfs41_proc_async_sequence
,
7439 .get_state_renewal_cred_locked
= nfs4_get_machine_cred_locked
,
7440 .renew_lease
= nfs4_proc_sequence
,
7444 static const struct nfs4_minor_version_ops nfs_v4_0_minor_ops
= {
7446 .init_caps
= NFS_CAP_READDIRPLUS
7447 | NFS_CAP_ATOMIC_OPEN
7448 | NFS_CAP_CHANGE_ATTR
7449 | NFS_CAP_POSIX_LOCK
,
7450 .call_sync
= _nfs4_call_sync
,
7451 .match_stateid
= nfs4_match_stateid
,
7452 .find_root_sec
= nfs4_find_root_sec
,
7453 .free_lock_state
= nfs4_release_lockowner
,
7454 .reboot_recovery_ops
= &nfs40_reboot_recovery_ops
,
7455 .nograce_recovery_ops
= &nfs40_nograce_recovery_ops
,
7456 .state_renewal_ops
= &nfs40_state_renewal_ops
,
7459 #if defined(CONFIG_NFS_V4_1)
7460 static const struct nfs4_minor_version_ops nfs_v4_1_minor_ops
= {
7462 .init_caps
= NFS_CAP_READDIRPLUS
7463 | NFS_CAP_ATOMIC_OPEN
7464 | NFS_CAP_CHANGE_ATTR
7465 | NFS_CAP_POSIX_LOCK
7466 | NFS_CAP_STATEID_NFSV41
7467 | NFS_CAP_ATOMIC_OPEN_V1
,
7468 .call_sync
= nfs4_call_sync_sequence
,
7469 .match_stateid
= nfs41_match_stateid
,
7470 .find_root_sec
= nfs41_find_root_sec
,
7471 .free_lock_state
= nfs41_free_lock_state
,
7472 .reboot_recovery_ops
= &nfs41_reboot_recovery_ops
,
7473 .nograce_recovery_ops
= &nfs41_nograce_recovery_ops
,
7474 .state_renewal_ops
= &nfs41_state_renewal_ops
,
7478 #if defined(CONFIG_NFS_V4_2)
7479 static const struct nfs4_minor_version_ops nfs_v4_2_minor_ops
= {
7481 .init_caps
= NFS_CAP_READDIRPLUS
7482 | NFS_CAP_ATOMIC_OPEN
7483 | NFS_CAP_CHANGE_ATTR
7484 | NFS_CAP_POSIX_LOCK
7485 | NFS_CAP_STATEID_NFSV41
7486 | NFS_CAP_ATOMIC_OPEN_V1
,
7487 .call_sync
= nfs4_call_sync_sequence
,
7488 .match_stateid
= nfs41_match_stateid
,
7489 .find_root_sec
= nfs41_find_root_sec
,
7490 .free_lock_state
= nfs41_free_lock_state
,
7491 .reboot_recovery_ops
= &nfs41_reboot_recovery_ops
,
7492 .nograce_recovery_ops
= &nfs41_nograce_recovery_ops
,
7493 .state_renewal_ops
= &nfs41_state_renewal_ops
,
7497 const struct nfs4_minor_version_ops
*nfs_v4_minor_ops
[] = {
7498 [0] = &nfs_v4_0_minor_ops
,
7499 #if defined(CONFIG_NFS_V4_1)
7500 [1] = &nfs_v4_1_minor_ops
,
7502 #if defined(CONFIG_NFS_V4_2)
7503 [2] = &nfs_v4_2_minor_ops
,
7507 static const struct inode_operations nfs4_dir_inode_operations
= {
7508 .create
= nfs_create
,
7509 .lookup
= nfs_lookup
,
7510 .atomic_open
= nfs_atomic_open
,
7512 .unlink
= nfs_unlink
,
7513 .symlink
= nfs_symlink
,
7517 .rename
= nfs_rename
,
7518 .permission
= nfs_permission
,
7519 .getattr
= nfs_getattr
,
7520 .setattr
= nfs_setattr
,
7521 .getxattr
= generic_getxattr
,
7522 .setxattr
= generic_setxattr
,
7523 .listxattr
= generic_listxattr
,
7524 .removexattr
= generic_removexattr
,
7527 static const struct inode_operations nfs4_file_inode_operations
= {
7528 .permission
= nfs_permission
,
7529 .getattr
= nfs_getattr
,
7530 .setattr
= nfs_setattr
,
7531 .getxattr
= generic_getxattr
,
7532 .setxattr
= generic_setxattr
,
7533 .listxattr
= generic_listxattr
,
7534 .removexattr
= generic_removexattr
,
7537 const struct nfs_rpc_ops nfs_v4_clientops
= {
7538 .version
= 4, /* protocol version */
7539 .dentry_ops
= &nfs4_dentry_operations
,
7540 .dir_inode_ops
= &nfs4_dir_inode_operations
,
7541 .file_inode_ops
= &nfs4_file_inode_operations
,
7542 .file_ops
= &nfs4_file_operations
,
7543 .getroot
= nfs4_proc_get_root
,
7544 .submount
= nfs4_submount
,
7545 .try_mount
= nfs4_try_mount
,
7546 .getattr
= nfs4_proc_getattr
,
7547 .setattr
= nfs4_proc_setattr
,
7548 .lookup
= nfs4_proc_lookup
,
7549 .access
= nfs4_proc_access
,
7550 .readlink
= nfs4_proc_readlink
,
7551 .create
= nfs4_proc_create
,
7552 .remove
= nfs4_proc_remove
,
7553 .unlink_setup
= nfs4_proc_unlink_setup
,
7554 .unlink_rpc_prepare
= nfs4_proc_unlink_rpc_prepare
,
7555 .unlink_done
= nfs4_proc_unlink_done
,
7556 .rename
= nfs4_proc_rename
,
7557 .rename_setup
= nfs4_proc_rename_setup
,
7558 .rename_rpc_prepare
= nfs4_proc_rename_rpc_prepare
,
7559 .rename_done
= nfs4_proc_rename_done
,
7560 .link
= nfs4_proc_link
,
7561 .symlink
= nfs4_proc_symlink
,
7562 .mkdir
= nfs4_proc_mkdir
,
7563 .rmdir
= nfs4_proc_remove
,
7564 .readdir
= nfs4_proc_readdir
,
7565 .mknod
= nfs4_proc_mknod
,
7566 .statfs
= nfs4_proc_statfs
,
7567 .fsinfo
= nfs4_proc_fsinfo
,
7568 .pathconf
= nfs4_proc_pathconf
,
7569 .set_capabilities
= nfs4_server_capabilities
,
7570 .decode_dirent
= nfs4_decode_dirent
,
7571 .read_setup
= nfs4_proc_read_setup
,
7572 .read_pageio_init
= pnfs_pageio_init_read
,
7573 .read_rpc_prepare
= nfs4_proc_read_rpc_prepare
,
7574 .read_done
= nfs4_read_done
,
7575 .write_setup
= nfs4_proc_write_setup
,
7576 .write_pageio_init
= pnfs_pageio_init_write
,
7577 .write_rpc_prepare
= nfs4_proc_write_rpc_prepare
,
7578 .write_done
= nfs4_write_done
,
7579 .commit_setup
= nfs4_proc_commit_setup
,
7580 .commit_rpc_prepare
= nfs4_proc_commit_rpc_prepare
,
7581 .commit_done
= nfs4_commit_done
,
7582 .lock
= nfs4_proc_lock
,
7583 .clear_acl_cache
= nfs4_zap_acl_attr
,
7584 .close_context
= nfs4_close_context
,
7585 .open_context
= nfs4_atomic_open
,
7586 .have_delegation
= nfs4_have_delegation
,
7587 .return_delegation
= nfs4_inode_return_delegation
,
7588 .alloc_client
= nfs4_alloc_client
,
7589 .init_client
= nfs4_init_client
,
7590 .free_client
= nfs4_free_client
,
7591 .create_server
= nfs4_create_server
,
7592 .clone_server
= nfs_clone_server
,
7595 static const struct xattr_handler nfs4_xattr_nfs4_acl_handler
= {
7596 .prefix
= XATTR_NAME_NFSV4_ACL
,
7597 .list
= nfs4_xattr_list_nfs4_acl
,
7598 .get
= nfs4_xattr_get_nfs4_acl
,
7599 .set
= nfs4_xattr_set_nfs4_acl
,
7602 const struct xattr_handler
*nfs4_xattr_handlers
[] = {
7603 &nfs4_xattr_nfs4_acl_handler
,
7604 #ifdef CONFIG_NFS_V4_SECURITY_LABEL
7605 &nfs4_xattr_nfs4_label_handler
,