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
*, long *);
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 err
= security_dentry_init_security(dentry
, sattr
->ia_mode
,
109 &dentry
->d_name
, (void **)&label
->label
, &label
->len
);
116 nfs4_label_release_security(struct nfs4_label
*label
)
119 security_release_secctx(label
->label
, label
->len
);
121 static inline u32
*nfs4_bitmask(struct nfs_server
*server
, struct nfs4_label
*label
)
124 return server
->attr_bitmask
;
126 return server
->attr_bitmask_nl
;
129 static inline struct nfs4_label
*
130 nfs4_label_init_security(struct inode
*dir
, struct dentry
*dentry
,
131 struct iattr
*sattr
, struct nfs4_label
*l
)
134 nfs4_label_release_security(struct nfs4_label
*label
)
137 nfs4_bitmask(struct nfs_server
*server
, struct nfs4_label
*label
)
138 { return server
->attr_bitmask
; }
141 /* Prevent leaks of NFSv4 errors into userland */
142 static int nfs4_map_errors(int err
)
147 case -NFS4ERR_RESOURCE
:
148 case -NFS4ERR_LAYOUTTRYLATER
:
149 case -NFS4ERR_RECALLCONFLICT
:
151 case -NFS4ERR_WRONGSEC
:
152 case -NFS4ERR_WRONG_CRED
:
154 case -NFS4ERR_BADOWNER
:
155 case -NFS4ERR_BADNAME
:
157 case -NFS4ERR_SHARE_DENIED
:
159 case -NFS4ERR_MINOR_VERS_MISMATCH
:
160 return -EPROTONOSUPPORT
;
161 case -NFS4ERR_FILE_OPEN
:
164 dprintk("%s could not handle NFSv4 error %d\n",
172 * This is our standard bitmap for GETATTR requests.
174 const u32 nfs4_fattr_bitmap
[3] = {
176 | FATTR4_WORD0_CHANGE
179 | FATTR4_WORD0_FILEID
,
181 | FATTR4_WORD1_NUMLINKS
183 | FATTR4_WORD1_OWNER_GROUP
184 | FATTR4_WORD1_RAWDEV
185 | FATTR4_WORD1_SPACE_USED
186 | FATTR4_WORD1_TIME_ACCESS
187 | FATTR4_WORD1_TIME_METADATA
188 | FATTR4_WORD1_TIME_MODIFY
,
189 #ifdef CONFIG_NFS_V4_SECURITY_LABEL
190 FATTR4_WORD2_SECURITY_LABEL
194 static const u32 nfs4_pnfs_open_bitmap
[3] = {
196 | FATTR4_WORD0_CHANGE
199 | FATTR4_WORD0_FILEID
,
201 | FATTR4_WORD1_NUMLINKS
203 | FATTR4_WORD1_OWNER_GROUP
204 | FATTR4_WORD1_RAWDEV
205 | FATTR4_WORD1_SPACE_USED
206 | FATTR4_WORD1_TIME_ACCESS
207 | FATTR4_WORD1_TIME_METADATA
208 | FATTR4_WORD1_TIME_MODIFY
,
209 FATTR4_WORD2_MDSTHRESHOLD
212 static const u32 nfs4_open_noattr_bitmap
[3] = {
214 | FATTR4_WORD0_CHANGE
215 | FATTR4_WORD0_FILEID
,
218 const u32 nfs4_statfs_bitmap
[3] = {
219 FATTR4_WORD0_FILES_AVAIL
220 | FATTR4_WORD0_FILES_FREE
221 | FATTR4_WORD0_FILES_TOTAL
,
222 FATTR4_WORD1_SPACE_AVAIL
223 | FATTR4_WORD1_SPACE_FREE
224 | FATTR4_WORD1_SPACE_TOTAL
227 const u32 nfs4_pathconf_bitmap
[3] = {
229 | FATTR4_WORD0_MAXNAME
,
233 const u32 nfs4_fsinfo_bitmap
[3] = { FATTR4_WORD0_MAXFILESIZE
234 | FATTR4_WORD0_MAXREAD
235 | FATTR4_WORD0_MAXWRITE
236 | FATTR4_WORD0_LEASE_TIME
,
237 FATTR4_WORD1_TIME_DELTA
238 | FATTR4_WORD1_FS_LAYOUT_TYPES
,
239 FATTR4_WORD2_LAYOUT_BLKSIZE
242 const u32 nfs4_fs_locations_bitmap
[3] = {
244 | FATTR4_WORD0_CHANGE
247 | FATTR4_WORD0_FILEID
248 | FATTR4_WORD0_FS_LOCATIONS
,
250 | FATTR4_WORD1_NUMLINKS
252 | FATTR4_WORD1_OWNER_GROUP
253 | FATTR4_WORD1_RAWDEV
254 | FATTR4_WORD1_SPACE_USED
255 | FATTR4_WORD1_TIME_ACCESS
256 | FATTR4_WORD1_TIME_METADATA
257 | FATTR4_WORD1_TIME_MODIFY
258 | FATTR4_WORD1_MOUNTED_ON_FILEID
,
261 static void nfs4_setup_readdir(u64 cookie
, __be32
*verifier
, struct dentry
*dentry
,
262 struct nfs4_readdir_arg
*readdir
)
267 readdir
->cookie
= cookie
;
268 memcpy(&readdir
->verifier
, verifier
, sizeof(readdir
->verifier
));
273 memset(&readdir
->verifier
, 0, sizeof(readdir
->verifier
));
278 * NFSv4 servers do not return entries for '.' and '..'
279 * Therefore, we fake these entries here. We let '.'
280 * have cookie 0 and '..' have cookie 1. Note that
281 * when talking to the server, we always send cookie 0
284 start
= p
= kmap_atomic(*readdir
->pages
);
287 *p
++ = xdr_one
; /* next */
288 *p
++ = xdr_zero
; /* cookie, first word */
289 *p
++ = xdr_one
; /* cookie, second word */
290 *p
++ = xdr_one
; /* entry len */
291 memcpy(p
, ".\0\0\0", 4); /* entry */
293 *p
++ = xdr_one
; /* bitmap length */
294 *p
++ = htonl(FATTR4_WORD0_FILEID
); /* bitmap */
295 *p
++ = htonl(8); /* attribute buffer length */
296 p
= xdr_encode_hyper(p
, NFS_FILEID(dentry
->d_inode
));
299 *p
++ = xdr_one
; /* next */
300 *p
++ = xdr_zero
; /* cookie, first word */
301 *p
++ = xdr_two
; /* cookie, second word */
302 *p
++ = xdr_two
; /* entry len */
303 memcpy(p
, "..\0\0", 4); /* entry */
305 *p
++ = xdr_one
; /* bitmap length */
306 *p
++ = htonl(FATTR4_WORD0_FILEID
); /* bitmap */
307 *p
++ = htonl(8); /* attribute buffer length */
308 p
= xdr_encode_hyper(p
, NFS_FILEID(dentry
->d_parent
->d_inode
));
310 readdir
->pgbase
= (char *)p
- (char *)start
;
311 readdir
->count
-= readdir
->pgbase
;
312 kunmap_atomic(start
);
315 static long nfs4_update_delay(long *timeout
)
319 return NFS4_POLL_RETRY_MAX
;
321 *timeout
= NFS4_POLL_RETRY_MIN
;
322 if (*timeout
> NFS4_POLL_RETRY_MAX
)
323 *timeout
= NFS4_POLL_RETRY_MAX
;
329 static int nfs4_delay(struct rpc_clnt
*clnt
, long *timeout
)
335 freezable_schedule_timeout_killable_unsafe(
336 nfs4_update_delay(timeout
));
337 if (fatal_signal_pending(current
))
342 /* This is the error handling routine for processes that are allowed
345 int nfs4_handle_exception(struct nfs_server
*server
, int errorcode
, struct nfs4_exception
*exception
)
347 struct nfs_client
*clp
= server
->nfs_client
;
348 struct nfs4_state
*state
= exception
->state
;
349 struct inode
*inode
= exception
->inode
;
352 exception
->retry
= 0;
356 case -NFS4ERR_OPENMODE
:
357 if (inode
&& nfs4_have_delegation(inode
, FMODE_READ
)) {
358 nfs4_inode_return_delegation(inode
);
359 exception
->retry
= 1;
364 ret
= nfs4_schedule_stateid_recovery(server
, state
);
367 goto wait_on_recovery
;
368 case -NFS4ERR_DELEG_REVOKED
:
369 case -NFS4ERR_ADMIN_REVOKED
:
370 case -NFS4ERR_BAD_STATEID
:
373 ret
= nfs4_schedule_stateid_recovery(server
, state
);
376 goto wait_on_recovery
;
377 case -NFS4ERR_EXPIRED
:
379 ret
= nfs4_schedule_stateid_recovery(server
, state
);
383 case -NFS4ERR_STALE_STATEID
:
384 case -NFS4ERR_STALE_CLIENTID
:
385 nfs4_schedule_lease_recovery(clp
);
386 goto wait_on_recovery
;
388 ret
= nfs4_schedule_migration_recovery(server
);
391 goto wait_on_recovery
;
392 case -NFS4ERR_LEASE_MOVED
:
393 nfs4_schedule_lease_moved_recovery(clp
);
394 goto wait_on_recovery
;
395 #if defined(CONFIG_NFS_V4_1)
396 case -NFS4ERR_BADSESSION
:
397 case -NFS4ERR_BADSLOT
:
398 case -NFS4ERR_BAD_HIGH_SLOT
:
399 case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION
:
400 case -NFS4ERR_DEADSESSION
:
401 case -NFS4ERR_SEQ_FALSE_RETRY
:
402 case -NFS4ERR_SEQ_MISORDERED
:
403 dprintk("%s ERROR: %d Reset session\n", __func__
,
405 nfs4_schedule_session_recovery(clp
->cl_session
, errorcode
);
406 goto wait_on_recovery
;
407 #endif /* defined(CONFIG_NFS_V4_1) */
408 case -NFS4ERR_FILE_OPEN
:
409 if (exception
->timeout
> HZ
) {
410 /* We have retried a decent amount, time to
418 ret
= nfs4_delay(server
->client
, &exception
->timeout
);
421 case -NFS4ERR_RETRY_UNCACHED_REP
:
422 case -NFS4ERR_OLD_STATEID
:
423 exception
->retry
= 1;
425 case -NFS4ERR_BADOWNER
:
426 /* The following works around a Linux server bug! */
427 case -NFS4ERR_BADNAME
:
428 if (server
->caps
& NFS_CAP_UIDGID_NOMAP
) {
429 server
->caps
&= ~NFS_CAP_UIDGID_NOMAP
;
430 exception
->retry
= 1;
431 printk(KERN_WARNING
"NFS: v4 server %s "
432 "does not accept raw "
434 "Reenabling the idmapper.\n",
435 server
->nfs_client
->cl_hostname
);
438 /* We failed to handle the error */
439 return nfs4_map_errors(ret
);
441 ret
= nfs4_wait_clnt_recover(clp
);
442 if (test_bit(NFS_MIG_FAILED
, &server
->mig_status
))
445 exception
->retry
= 1;
450 * Return 'true' if 'clp' is using an rpc_client that is integrity protected
451 * or 'false' otherwise.
453 static bool _nfs4_is_integrity_protected(struct nfs_client
*clp
)
455 rpc_authflavor_t flavor
= clp
->cl_rpcclient
->cl_auth
->au_flavor
;
457 if (flavor
== RPC_AUTH_GSS_KRB5I
||
458 flavor
== RPC_AUTH_GSS_KRB5P
)
464 static void do_renew_lease(struct nfs_client
*clp
, unsigned long timestamp
)
466 spin_lock(&clp
->cl_lock
);
467 if (time_before(clp
->cl_last_renewal
,timestamp
))
468 clp
->cl_last_renewal
= timestamp
;
469 spin_unlock(&clp
->cl_lock
);
472 static void renew_lease(const struct nfs_server
*server
, unsigned long timestamp
)
474 do_renew_lease(server
->nfs_client
, timestamp
);
477 struct nfs4_call_sync_data
{
478 const struct nfs_server
*seq_server
;
479 struct nfs4_sequence_args
*seq_args
;
480 struct nfs4_sequence_res
*seq_res
;
483 static void nfs4_init_sequence(struct nfs4_sequence_args
*args
,
484 struct nfs4_sequence_res
*res
, int cache_reply
)
486 args
->sa_slot
= NULL
;
487 args
->sa_cache_this
= cache_reply
;
488 args
->sa_privileged
= 0;
493 static void nfs4_set_sequence_privileged(struct nfs4_sequence_args
*args
)
495 args
->sa_privileged
= 1;
498 static int nfs40_setup_sequence(const struct nfs_server
*server
,
499 struct nfs4_sequence_args
*args
,
500 struct nfs4_sequence_res
*res
,
501 struct rpc_task
*task
)
503 struct nfs4_slot_table
*tbl
= server
->nfs_client
->cl_slot_tbl
;
504 struct nfs4_slot
*slot
;
506 /* slot already allocated? */
507 if (res
->sr_slot
!= NULL
)
510 spin_lock(&tbl
->slot_tbl_lock
);
511 if (nfs4_slot_tbl_draining(tbl
) && !args
->sa_privileged
)
514 slot
= nfs4_alloc_slot(tbl
);
516 if (slot
== ERR_PTR(-ENOMEM
))
517 task
->tk_timeout
= HZ
>> 2;
520 spin_unlock(&tbl
->slot_tbl_lock
);
522 args
->sa_slot
= slot
;
526 rpc_call_start(task
);
530 if (args
->sa_privileged
)
531 rpc_sleep_on_priority(&tbl
->slot_tbl_waitq
, task
,
532 NULL
, RPC_PRIORITY_PRIVILEGED
);
534 rpc_sleep_on(&tbl
->slot_tbl_waitq
, task
, NULL
);
535 spin_unlock(&tbl
->slot_tbl_lock
);
539 static int nfs40_sequence_done(struct rpc_task
*task
,
540 struct nfs4_sequence_res
*res
)
542 struct nfs4_slot
*slot
= res
->sr_slot
;
543 struct nfs4_slot_table
*tbl
;
549 spin_lock(&tbl
->slot_tbl_lock
);
550 if (!nfs41_wake_and_assign_slot(tbl
, slot
))
551 nfs4_free_slot(tbl
, slot
);
552 spin_unlock(&tbl
->slot_tbl_lock
);
559 #if defined(CONFIG_NFS_V4_1)
561 static void nfs41_sequence_free_slot(struct nfs4_sequence_res
*res
)
563 struct nfs4_session
*session
;
564 struct nfs4_slot_table
*tbl
;
565 struct nfs4_slot
*slot
= res
->sr_slot
;
566 bool send_new_highest_used_slotid
= false;
569 session
= tbl
->session
;
571 spin_lock(&tbl
->slot_tbl_lock
);
572 /* Be nice to the server: try to ensure that the last transmitted
573 * value for highest_user_slotid <= target_highest_slotid
575 if (tbl
->highest_used_slotid
> tbl
->target_highest_slotid
)
576 send_new_highest_used_slotid
= true;
578 if (nfs41_wake_and_assign_slot(tbl
, slot
)) {
579 send_new_highest_used_slotid
= false;
582 nfs4_free_slot(tbl
, slot
);
584 if (tbl
->highest_used_slotid
!= NFS4_NO_SLOT
)
585 send_new_highest_used_slotid
= false;
587 spin_unlock(&tbl
->slot_tbl_lock
);
589 if (send_new_highest_used_slotid
)
590 nfs41_server_notify_highest_slotid_update(session
->clp
);
593 int nfs41_sequence_done(struct rpc_task
*task
, struct nfs4_sequence_res
*res
)
595 struct nfs4_session
*session
;
596 struct nfs4_slot
*slot
= res
->sr_slot
;
597 struct nfs_client
*clp
;
598 bool interrupted
= false;
603 /* don't increment the sequence number if the task wasn't sent */
604 if (!RPC_WAS_SENT(task
))
607 session
= slot
->table
->session
;
609 if (slot
->interrupted
) {
610 slot
->interrupted
= 0;
614 trace_nfs4_sequence_done(session
, res
);
615 /* Check the SEQUENCE operation status */
616 switch (res
->sr_status
) {
618 /* Update the slot's sequence and clientid lease timer */
621 do_renew_lease(clp
, res
->sr_timestamp
);
622 /* Check sequence flags */
623 if (res
->sr_status_flags
!= 0)
624 nfs4_schedule_lease_recovery(clp
);
625 nfs41_update_target_slotid(slot
->table
, slot
, res
);
629 * sr_status remains 1 if an RPC level error occurred.
630 * The server may or may not have processed the sequence
632 * Mark the slot as having hosted an interrupted RPC call.
634 slot
->interrupted
= 1;
637 /* The server detected a resend of the RPC call and
638 * returned NFS4ERR_DELAY as per Section 2.10.6.2
641 dprintk("%s: slot=%u seq=%u: Operation in progress\n",
646 case -NFS4ERR_BADSLOT
:
648 * The slot id we used was probably retired. Try again
649 * using a different slot id.
652 case -NFS4ERR_SEQ_MISORDERED
:
654 * Was the last operation on this sequence interrupted?
655 * If so, retry after bumping the sequence number.
662 * Could this slot have been previously retired?
663 * If so, then the server may be expecting seq_nr = 1!
665 if (slot
->seq_nr
!= 1) {
670 case -NFS4ERR_SEQ_FALSE_RETRY
:
674 /* Just update the slot sequence no. */
678 /* The session may be reset by one of the error handlers. */
679 dprintk("%s: Error %d free the slot \n", __func__
, res
->sr_status
);
680 nfs41_sequence_free_slot(res
);
684 if (rpc_restart_call_prepare(task
)) {
690 if (!rpc_restart_call(task
))
692 rpc_delay(task
, NFS4_POLL_RETRY_MAX
);
695 EXPORT_SYMBOL_GPL(nfs41_sequence_done
);
697 static int nfs4_sequence_done(struct rpc_task
*task
,
698 struct nfs4_sequence_res
*res
)
700 if (res
->sr_slot
== NULL
)
702 if (!res
->sr_slot
->table
->session
)
703 return nfs40_sequence_done(task
, res
);
704 return nfs41_sequence_done(task
, res
);
707 int nfs41_setup_sequence(struct nfs4_session
*session
,
708 struct nfs4_sequence_args
*args
,
709 struct nfs4_sequence_res
*res
,
710 struct rpc_task
*task
)
712 struct nfs4_slot
*slot
;
713 struct nfs4_slot_table
*tbl
;
715 dprintk("--> %s\n", __func__
);
716 /* slot already allocated? */
717 if (res
->sr_slot
!= NULL
)
720 tbl
= &session
->fc_slot_table
;
722 task
->tk_timeout
= 0;
724 spin_lock(&tbl
->slot_tbl_lock
);
725 if (test_bit(NFS4_SLOT_TBL_DRAINING
, &tbl
->slot_tbl_state
) &&
726 !args
->sa_privileged
) {
727 /* The state manager will wait until the slot table is empty */
728 dprintk("%s session is draining\n", __func__
);
732 slot
= nfs4_alloc_slot(tbl
);
734 /* If out of memory, try again in 1/4 second */
735 if (slot
== ERR_PTR(-ENOMEM
))
736 task
->tk_timeout
= HZ
>> 2;
737 dprintk("<-- %s: no free slots\n", __func__
);
740 spin_unlock(&tbl
->slot_tbl_lock
);
742 args
->sa_slot
= slot
;
744 dprintk("<-- %s slotid=%u seqid=%u\n", __func__
,
745 slot
->slot_nr
, slot
->seq_nr
);
748 res
->sr_timestamp
= jiffies
;
749 res
->sr_status_flags
= 0;
751 * sr_status is only set in decode_sequence, and so will remain
752 * set to 1 if an rpc level failure occurs.
755 trace_nfs4_setup_sequence(session
, args
);
757 rpc_call_start(task
);
760 /* Privileged tasks are queued with top priority */
761 if (args
->sa_privileged
)
762 rpc_sleep_on_priority(&tbl
->slot_tbl_waitq
, task
,
763 NULL
, RPC_PRIORITY_PRIVILEGED
);
765 rpc_sleep_on(&tbl
->slot_tbl_waitq
, task
, NULL
);
766 spin_unlock(&tbl
->slot_tbl_lock
);
769 EXPORT_SYMBOL_GPL(nfs41_setup_sequence
);
771 static int nfs4_setup_sequence(const struct nfs_server
*server
,
772 struct nfs4_sequence_args
*args
,
773 struct nfs4_sequence_res
*res
,
774 struct rpc_task
*task
)
776 struct nfs4_session
*session
= nfs4_get_session(server
);
780 return nfs40_setup_sequence(server
, args
, res
, task
);
782 dprintk("--> %s clp %p session %p sr_slot %u\n",
783 __func__
, session
->clp
, session
, res
->sr_slot
?
784 res
->sr_slot
->slot_nr
: NFS4_NO_SLOT
);
786 ret
= nfs41_setup_sequence(session
, args
, res
, task
);
788 dprintk("<-- %s status=%d\n", __func__
, ret
);
792 static void nfs41_call_sync_prepare(struct rpc_task
*task
, void *calldata
)
794 struct nfs4_call_sync_data
*data
= calldata
;
795 struct nfs4_session
*session
= nfs4_get_session(data
->seq_server
);
797 dprintk("--> %s data->seq_server %p\n", __func__
, data
->seq_server
);
799 nfs41_setup_sequence(session
, data
->seq_args
, data
->seq_res
, task
);
802 static void nfs41_call_sync_done(struct rpc_task
*task
, void *calldata
)
804 struct nfs4_call_sync_data
*data
= calldata
;
806 nfs41_sequence_done(task
, data
->seq_res
);
809 static const struct rpc_call_ops nfs41_call_sync_ops
= {
810 .rpc_call_prepare
= nfs41_call_sync_prepare
,
811 .rpc_call_done
= nfs41_call_sync_done
,
814 #else /* !CONFIG_NFS_V4_1 */
816 static int nfs4_setup_sequence(const struct nfs_server
*server
,
817 struct nfs4_sequence_args
*args
,
818 struct nfs4_sequence_res
*res
,
819 struct rpc_task
*task
)
821 return nfs40_setup_sequence(server
, args
, res
, task
);
824 static int nfs4_sequence_done(struct rpc_task
*task
,
825 struct nfs4_sequence_res
*res
)
827 return nfs40_sequence_done(task
, res
);
830 #endif /* !CONFIG_NFS_V4_1 */
832 static void nfs40_call_sync_prepare(struct rpc_task
*task
, void *calldata
)
834 struct nfs4_call_sync_data
*data
= calldata
;
835 nfs4_setup_sequence(data
->seq_server
,
836 data
->seq_args
, data
->seq_res
, task
);
839 static void nfs40_call_sync_done(struct rpc_task
*task
, void *calldata
)
841 struct nfs4_call_sync_data
*data
= calldata
;
842 nfs4_sequence_done(task
, data
->seq_res
);
845 static const struct rpc_call_ops nfs40_call_sync_ops
= {
846 .rpc_call_prepare
= nfs40_call_sync_prepare
,
847 .rpc_call_done
= nfs40_call_sync_done
,
850 static int nfs4_call_sync_sequence(struct rpc_clnt
*clnt
,
851 struct nfs_server
*server
,
852 struct rpc_message
*msg
,
853 struct nfs4_sequence_args
*args
,
854 struct nfs4_sequence_res
*res
)
857 struct rpc_task
*task
;
858 struct nfs_client
*clp
= server
->nfs_client
;
859 struct nfs4_call_sync_data data
= {
860 .seq_server
= server
,
864 struct rpc_task_setup task_setup
= {
867 .callback_ops
= clp
->cl_mvops
->call_sync_ops
,
868 .callback_data
= &data
871 task
= rpc_run_task(&task_setup
);
875 ret
= task
->tk_status
;
881 int nfs4_call_sync(struct rpc_clnt
*clnt
,
882 struct nfs_server
*server
,
883 struct rpc_message
*msg
,
884 struct nfs4_sequence_args
*args
,
885 struct nfs4_sequence_res
*res
,
888 nfs4_init_sequence(args
, res
, cache_reply
);
889 return nfs4_call_sync_sequence(clnt
, server
, msg
, args
, res
);
892 static void update_changeattr(struct inode
*dir
, struct nfs4_change_info
*cinfo
)
894 struct nfs_inode
*nfsi
= NFS_I(dir
);
896 spin_lock(&dir
->i_lock
);
897 nfsi
->cache_validity
|= NFS_INO_INVALID_ATTR
|NFS_INO_INVALID_DATA
;
898 if (!cinfo
->atomic
|| cinfo
->before
!= dir
->i_version
)
899 nfs_force_lookup_revalidate(dir
);
900 dir
->i_version
= cinfo
->after
;
901 nfs_fscache_invalidate(dir
);
902 spin_unlock(&dir
->i_lock
);
905 struct nfs4_opendata
{
907 struct nfs_openargs o_arg
;
908 struct nfs_openres o_res
;
909 struct nfs_open_confirmargs c_arg
;
910 struct nfs_open_confirmres c_res
;
911 struct nfs4_string owner_name
;
912 struct nfs4_string group_name
;
913 struct nfs_fattr f_attr
;
914 struct nfs4_label
*f_label
;
916 struct dentry
*dentry
;
917 struct nfs4_state_owner
*owner
;
918 struct nfs4_state
*state
;
920 unsigned long timestamp
;
921 unsigned int rpc_done
: 1;
922 unsigned int file_created
: 1;
923 unsigned int is_recover
: 1;
928 static bool nfs4_clear_cap_atomic_open_v1(struct nfs_server
*server
,
929 int err
, struct nfs4_exception
*exception
)
933 if (!(server
->caps
& NFS_CAP_ATOMIC_OPEN_V1
))
935 server
->caps
&= ~NFS_CAP_ATOMIC_OPEN_V1
;
936 exception
->retry
= 1;
940 static enum open_claim_type4
941 nfs4_map_atomic_open_claim(struct nfs_server
*server
,
942 enum open_claim_type4 claim
)
944 if (server
->caps
& NFS_CAP_ATOMIC_OPEN_V1
)
949 case NFS4_OPEN_CLAIM_FH
:
950 return NFS4_OPEN_CLAIM_NULL
;
951 case NFS4_OPEN_CLAIM_DELEG_CUR_FH
:
952 return NFS4_OPEN_CLAIM_DELEGATE_CUR
;
953 case NFS4_OPEN_CLAIM_DELEG_PREV_FH
:
954 return NFS4_OPEN_CLAIM_DELEGATE_PREV
;
958 static void nfs4_init_opendata_res(struct nfs4_opendata
*p
)
960 p
->o_res
.f_attr
= &p
->f_attr
;
961 p
->o_res
.f_label
= p
->f_label
;
962 p
->o_res
.seqid
= p
->o_arg
.seqid
;
963 p
->c_res
.seqid
= p
->c_arg
.seqid
;
964 p
->o_res
.server
= p
->o_arg
.server
;
965 p
->o_res
.access_request
= p
->o_arg
.access
;
966 nfs_fattr_init(&p
->f_attr
);
967 nfs_fattr_init_names(&p
->f_attr
, &p
->owner_name
, &p
->group_name
);
970 static struct nfs4_opendata
*nfs4_opendata_alloc(struct dentry
*dentry
,
971 struct nfs4_state_owner
*sp
, fmode_t fmode
, int flags
,
972 const struct iattr
*attrs
,
973 struct nfs4_label
*label
,
974 enum open_claim_type4 claim
,
977 struct dentry
*parent
= dget_parent(dentry
);
978 struct inode
*dir
= parent
->d_inode
;
979 struct nfs_server
*server
= NFS_SERVER(dir
);
980 struct nfs_seqid
*(*alloc_seqid
)(struct nfs_seqid_counter
*, gfp_t
);
981 struct nfs4_opendata
*p
;
983 p
= kzalloc(sizeof(*p
), gfp_mask
);
987 p
->f_label
= nfs4_label_alloc(server
, gfp_mask
);
988 if (IS_ERR(p
->f_label
))
991 alloc_seqid
= server
->nfs_client
->cl_mvops
->alloc_seqid
;
992 p
->o_arg
.seqid
= alloc_seqid(&sp
->so_seqid
, gfp_mask
);
993 if (IS_ERR(p
->o_arg
.seqid
))
995 nfs_sb_active(dentry
->d_sb
);
996 p
->dentry
= dget(dentry
);
999 atomic_inc(&sp
->so_count
);
1000 p
->o_arg
.open_flags
= flags
;
1001 p
->o_arg
.fmode
= fmode
& (FMODE_READ
|FMODE_WRITE
);
1002 /* don't put an ACCESS op in OPEN compound if O_EXCL, because ACCESS
1003 * will return permission denied for all bits until close */
1004 if (!(flags
& O_EXCL
)) {
1005 /* ask server to check for all possible rights as results
1007 p
->o_arg
.access
= NFS4_ACCESS_READ
| NFS4_ACCESS_MODIFY
|
1008 NFS4_ACCESS_EXTEND
| NFS4_ACCESS_EXECUTE
;
1010 p
->o_arg
.clientid
= server
->nfs_client
->cl_clientid
;
1011 p
->o_arg
.id
.create_time
= ktime_to_ns(sp
->so_seqid
.create_time
);
1012 p
->o_arg
.id
.uniquifier
= sp
->so_seqid
.owner_id
;
1013 p
->o_arg
.name
= &dentry
->d_name
;
1014 p
->o_arg
.server
= server
;
1015 p
->o_arg
.bitmask
= nfs4_bitmask(server
, label
);
1016 p
->o_arg
.open_bitmap
= &nfs4_fattr_bitmap
[0];
1017 p
->o_arg
.label
= label
;
1018 p
->o_arg
.claim
= nfs4_map_atomic_open_claim(server
, claim
);
1019 switch (p
->o_arg
.claim
) {
1020 case NFS4_OPEN_CLAIM_NULL
:
1021 case NFS4_OPEN_CLAIM_DELEGATE_CUR
:
1022 case NFS4_OPEN_CLAIM_DELEGATE_PREV
:
1023 p
->o_arg
.fh
= NFS_FH(dir
);
1025 case NFS4_OPEN_CLAIM_PREVIOUS
:
1026 case NFS4_OPEN_CLAIM_FH
:
1027 case NFS4_OPEN_CLAIM_DELEG_CUR_FH
:
1028 case NFS4_OPEN_CLAIM_DELEG_PREV_FH
:
1029 p
->o_arg
.fh
= NFS_FH(dentry
->d_inode
);
1031 if (attrs
!= NULL
&& attrs
->ia_valid
!= 0) {
1034 p
->o_arg
.u
.attrs
= &p
->attrs
;
1035 memcpy(&p
->attrs
, attrs
, sizeof(p
->attrs
));
1038 verf
[1] = current
->pid
;
1039 memcpy(p
->o_arg
.u
.verifier
.data
, verf
,
1040 sizeof(p
->o_arg
.u
.verifier
.data
));
1042 p
->c_arg
.fh
= &p
->o_res
.fh
;
1043 p
->c_arg
.stateid
= &p
->o_res
.stateid
;
1044 p
->c_arg
.seqid
= p
->o_arg
.seqid
;
1045 nfs4_init_opendata_res(p
);
1046 kref_init(&p
->kref
);
1050 nfs4_label_free(p
->f_label
);
1058 static void nfs4_opendata_free(struct kref
*kref
)
1060 struct nfs4_opendata
*p
= container_of(kref
,
1061 struct nfs4_opendata
, kref
);
1062 struct super_block
*sb
= p
->dentry
->d_sb
;
1064 nfs_free_seqid(p
->o_arg
.seqid
);
1065 if (p
->state
!= NULL
)
1066 nfs4_put_open_state(p
->state
);
1067 nfs4_put_state_owner(p
->owner
);
1069 nfs4_label_free(p
->f_label
);
1073 nfs_sb_deactive(sb
);
1074 nfs_fattr_free_names(&p
->f_attr
);
1075 kfree(p
->f_attr
.mdsthreshold
);
1079 static void nfs4_opendata_put(struct nfs4_opendata
*p
)
1082 kref_put(&p
->kref
, nfs4_opendata_free
);
1085 static int nfs4_wait_for_completion_rpc_task(struct rpc_task
*task
)
1089 ret
= rpc_wait_for_completion_task(task
);
1093 static int can_open_cached(struct nfs4_state
*state
, fmode_t mode
, int open_mode
)
1097 if (open_mode
& (O_EXCL
|O_TRUNC
))
1099 switch (mode
& (FMODE_READ
|FMODE_WRITE
)) {
1101 ret
|= test_bit(NFS_O_RDONLY_STATE
, &state
->flags
) != 0
1102 && state
->n_rdonly
!= 0;
1105 ret
|= test_bit(NFS_O_WRONLY_STATE
, &state
->flags
) != 0
1106 && state
->n_wronly
!= 0;
1108 case FMODE_READ
|FMODE_WRITE
:
1109 ret
|= test_bit(NFS_O_RDWR_STATE
, &state
->flags
) != 0
1110 && state
->n_rdwr
!= 0;
1116 static int can_open_delegated(struct nfs_delegation
*delegation
, fmode_t fmode
)
1118 if (delegation
== NULL
)
1120 if ((delegation
->type
& fmode
) != fmode
)
1122 if (test_bit(NFS_DELEGATION_RETURNING
, &delegation
->flags
))
1124 nfs_mark_delegation_referenced(delegation
);
1128 static void update_open_stateflags(struct nfs4_state
*state
, fmode_t fmode
)
1137 case FMODE_READ
|FMODE_WRITE
:
1140 nfs4_state_set_mode_locked(state
, state
->state
| fmode
);
1143 static void nfs_test_and_clear_all_open_stateid(struct nfs4_state
*state
)
1145 struct nfs_client
*clp
= state
->owner
->so_server
->nfs_client
;
1146 bool need_recover
= false;
1148 if (test_and_clear_bit(NFS_O_RDONLY_STATE
, &state
->flags
) && state
->n_rdonly
)
1149 need_recover
= true;
1150 if (test_and_clear_bit(NFS_O_WRONLY_STATE
, &state
->flags
) && state
->n_wronly
)
1151 need_recover
= true;
1152 if (test_and_clear_bit(NFS_O_RDWR_STATE
, &state
->flags
) && state
->n_rdwr
)
1153 need_recover
= true;
1155 nfs4_state_mark_reclaim_nograce(clp
, state
);
1158 static bool nfs_need_update_open_stateid(struct nfs4_state
*state
,
1159 nfs4_stateid
*stateid
)
1161 if (test_and_set_bit(NFS_OPEN_STATE
, &state
->flags
) == 0)
1163 if (!nfs4_stateid_match_other(stateid
, &state
->open_stateid
)) {
1164 nfs_test_and_clear_all_open_stateid(state
);
1167 if (nfs4_stateid_is_newer(stateid
, &state
->open_stateid
))
1172 static void nfs_resync_open_stateid_locked(struct nfs4_state
*state
)
1174 if (state
->n_wronly
)
1175 set_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
1176 if (state
->n_rdonly
)
1177 set_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
1179 set_bit(NFS_O_RDWR_STATE
, &state
->flags
);
1182 static void nfs_clear_open_stateid_locked(struct nfs4_state
*state
,
1183 nfs4_stateid
*stateid
, fmode_t fmode
)
1185 clear_bit(NFS_O_RDWR_STATE
, &state
->flags
);
1186 switch (fmode
& (FMODE_READ
|FMODE_WRITE
)) {
1188 clear_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
1191 clear_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
1194 clear_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
1195 clear_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
1196 clear_bit(NFS_OPEN_STATE
, &state
->flags
);
1198 if (stateid
== NULL
)
1200 /* Handle races with OPEN */
1201 if (!nfs4_stateid_match_other(stateid
, &state
->open_stateid
) ||
1202 !nfs4_stateid_is_newer(stateid
, &state
->open_stateid
)) {
1203 nfs_resync_open_stateid_locked(state
);
1206 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) == 0)
1207 nfs4_stateid_copy(&state
->stateid
, stateid
);
1208 nfs4_stateid_copy(&state
->open_stateid
, stateid
);
1211 static void nfs_clear_open_stateid(struct nfs4_state
*state
, nfs4_stateid
*stateid
, fmode_t fmode
)
1213 write_seqlock(&state
->seqlock
);
1214 nfs_clear_open_stateid_locked(state
, stateid
, fmode
);
1215 write_sequnlock(&state
->seqlock
);
1216 if (test_bit(NFS_STATE_RECLAIM_NOGRACE
, &state
->flags
))
1217 nfs4_schedule_state_manager(state
->owner
->so_server
->nfs_client
);
1220 static void nfs_set_open_stateid_locked(struct nfs4_state
*state
, nfs4_stateid
*stateid
, fmode_t fmode
)
1224 set_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
1227 set_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
1229 case FMODE_READ
|FMODE_WRITE
:
1230 set_bit(NFS_O_RDWR_STATE
, &state
->flags
);
1232 if (!nfs_need_update_open_stateid(state
, stateid
))
1234 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) == 0)
1235 nfs4_stateid_copy(&state
->stateid
, stateid
);
1236 nfs4_stateid_copy(&state
->open_stateid
, stateid
);
1239 static void __update_open_stateid(struct nfs4_state
*state
, nfs4_stateid
*open_stateid
, const nfs4_stateid
*deleg_stateid
, fmode_t fmode
)
1242 * Protect the call to nfs4_state_set_mode_locked and
1243 * serialise the stateid update
1245 write_seqlock(&state
->seqlock
);
1246 if (deleg_stateid
!= NULL
) {
1247 nfs4_stateid_copy(&state
->stateid
, deleg_stateid
);
1248 set_bit(NFS_DELEGATED_STATE
, &state
->flags
);
1250 if (open_stateid
!= NULL
)
1251 nfs_set_open_stateid_locked(state
, open_stateid
, fmode
);
1252 write_sequnlock(&state
->seqlock
);
1253 spin_lock(&state
->owner
->so_lock
);
1254 update_open_stateflags(state
, fmode
);
1255 spin_unlock(&state
->owner
->so_lock
);
1258 static int update_open_stateid(struct nfs4_state
*state
, nfs4_stateid
*open_stateid
, nfs4_stateid
*delegation
, fmode_t fmode
)
1260 struct nfs_inode
*nfsi
= NFS_I(state
->inode
);
1261 struct nfs_delegation
*deleg_cur
;
1264 fmode
&= (FMODE_READ
|FMODE_WRITE
);
1267 deleg_cur
= rcu_dereference(nfsi
->delegation
);
1268 if (deleg_cur
== NULL
)
1271 spin_lock(&deleg_cur
->lock
);
1272 if (rcu_dereference(nfsi
->delegation
) != deleg_cur
||
1273 test_bit(NFS_DELEGATION_RETURNING
, &deleg_cur
->flags
) ||
1274 (deleg_cur
->type
& fmode
) != fmode
)
1275 goto no_delegation_unlock
;
1277 if (delegation
== NULL
)
1278 delegation
= &deleg_cur
->stateid
;
1279 else if (!nfs4_stateid_match(&deleg_cur
->stateid
, delegation
))
1280 goto no_delegation_unlock
;
1282 nfs_mark_delegation_referenced(deleg_cur
);
1283 __update_open_stateid(state
, open_stateid
, &deleg_cur
->stateid
, fmode
);
1285 no_delegation_unlock
:
1286 spin_unlock(&deleg_cur
->lock
);
1290 if (!ret
&& open_stateid
!= NULL
) {
1291 __update_open_stateid(state
, open_stateid
, NULL
, fmode
);
1294 if (test_bit(NFS_STATE_RECLAIM_NOGRACE
, &state
->flags
))
1295 nfs4_schedule_state_manager(state
->owner
->so_server
->nfs_client
);
1300 static bool nfs4_update_lock_stateid(struct nfs4_lock_state
*lsp
,
1301 const nfs4_stateid
*stateid
)
1303 struct nfs4_state
*state
= lsp
->ls_state
;
1306 spin_lock(&state
->state_lock
);
1307 if (!nfs4_stateid_match_other(stateid
, &lsp
->ls_stateid
))
1309 if (!nfs4_stateid_is_newer(stateid
, &lsp
->ls_stateid
))
1311 nfs4_stateid_copy(&lsp
->ls_stateid
, stateid
);
1314 spin_unlock(&state
->state_lock
);
1318 static void nfs4_return_incompatible_delegation(struct inode
*inode
, fmode_t fmode
)
1320 struct nfs_delegation
*delegation
;
1323 delegation
= rcu_dereference(NFS_I(inode
)->delegation
);
1324 if (delegation
== NULL
|| (delegation
->type
& fmode
) == fmode
) {
1329 nfs4_inode_return_delegation(inode
);
1332 static struct nfs4_state
*nfs4_try_open_cached(struct nfs4_opendata
*opendata
)
1334 struct nfs4_state
*state
= opendata
->state
;
1335 struct nfs_inode
*nfsi
= NFS_I(state
->inode
);
1336 struct nfs_delegation
*delegation
;
1337 int open_mode
= opendata
->o_arg
.open_flags
;
1338 fmode_t fmode
= opendata
->o_arg
.fmode
;
1339 nfs4_stateid stateid
;
1343 spin_lock(&state
->owner
->so_lock
);
1344 if (can_open_cached(state
, fmode
, open_mode
)) {
1345 update_open_stateflags(state
, fmode
);
1346 spin_unlock(&state
->owner
->so_lock
);
1347 goto out_return_state
;
1349 spin_unlock(&state
->owner
->so_lock
);
1351 delegation
= rcu_dereference(nfsi
->delegation
);
1352 if (!can_open_delegated(delegation
, fmode
)) {
1356 /* Save the delegation */
1357 nfs4_stateid_copy(&stateid
, &delegation
->stateid
);
1359 nfs_release_seqid(opendata
->o_arg
.seqid
);
1360 if (!opendata
->is_recover
) {
1361 ret
= nfs_may_open(state
->inode
, state
->owner
->so_cred
, open_mode
);
1367 /* Try to update the stateid using the delegation */
1368 if (update_open_stateid(state
, NULL
, &stateid
, fmode
))
1369 goto out_return_state
;
1372 return ERR_PTR(ret
);
1374 atomic_inc(&state
->count
);
1379 nfs4_opendata_check_deleg(struct nfs4_opendata
*data
, struct nfs4_state
*state
)
1381 struct nfs_client
*clp
= NFS_SERVER(state
->inode
)->nfs_client
;
1382 struct nfs_delegation
*delegation
;
1383 int delegation_flags
= 0;
1386 delegation
= rcu_dereference(NFS_I(state
->inode
)->delegation
);
1388 delegation_flags
= delegation
->flags
;
1390 if (data
->o_arg
.claim
== NFS4_OPEN_CLAIM_DELEGATE_CUR
) {
1391 pr_err_ratelimited("NFS: Broken NFSv4 server %s is "
1392 "returning a delegation for "
1393 "OPEN(CLAIM_DELEGATE_CUR)\n",
1395 } else if ((delegation_flags
& 1UL<<NFS_DELEGATION_NEED_RECLAIM
) == 0)
1396 nfs_inode_set_delegation(state
->inode
,
1397 data
->owner
->so_cred
,
1400 nfs_inode_reclaim_delegation(state
->inode
,
1401 data
->owner
->so_cred
,
1406 * Check the inode attributes against the CLAIM_PREVIOUS returned attributes
1407 * and update the nfs4_state.
1409 static struct nfs4_state
*
1410 _nfs4_opendata_reclaim_to_nfs4_state(struct nfs4_opendata
*data
)
1412 struct inode
*inode
= data
->state
->inode
;
1413 struct nfs4_state
*state
= data
->state
;
1416 if (!data
->rpc_done
) {
1417 if (data
->rpc_status
) {
1418 ret
= data
->rpc_status
;
1421 /* cached opens have already been processed */
1425 ret
= nfs_refresh_inode(inode
, &data
->f_attr
);
1429 if (data
->o_res
.delegation_type
!= 0)
1430 nfs4_opendata_check_deleg(data
, state
);
1432 update_open_stateid(state
, &data
->o_res
.stateid
, NULL
,
1434 atomic_inc(&state
->count
);
1438 return ERR_PTR(ret
);
1442 static struct nfs4_state
*
1443 _nfs4_opendata_to_nfs4_state(struct nfs4_opendata
*data
)
1445 struct inode
*inode
;
1446 struct nfs4_state
*state
= NULL
;
1449 if (!data
->rpc_done
) {
1450 state
= nfs4_try_open_cached(data
);
1455 if (!(data
->f_attr
.valid
& NFS_ATTR_FATTR
))
1457 inode
= nfs_fhget(data
->dir
->d_sb
, &data
->o_res
.fh
, &data
->f_attr
, data
->f_label
);
1458 ret
= PTR_ERR(inode
);
1462 state
= nfs4_get_open_state(inode
, data
->owner
);
1465 if (data
->o_res
.delegation_type
!= 0)
1466 nfs4_opendata_check_deleg(data
, state
);
1467 update_open_stateid(state
, &data
->o_res
.stateid
, NULL
,
1471 nfs_release_seqid(data
->o_arg
.seqid
);
1476 return ERR_PTR(ret
);
1479 static struct nfs4_state
*
1480 nfs4_opendata_to_nfs4_state(struct nfs4_opendata
*data
)
1482 if (data
->o_arg
.claim
== NFS4_OPEN_CLAIM_PREVIOUS
)
1483 return _nfs4_opendata_reclaim_to_nfs4_state(data
);
1484 return _nfs4_opendata_to_nfs4_state(data
);
1487 static struct nfs_open_context
*nfs4_state_find_open_context(struct nfs4_state
*state
)
1489 struct nfs_inode
*nfsi
= NFS_I(state
->inode
);
1490 struct nfs_open_context
*ctx
;
1492 spin_lock(&state
->inode
->i_lock
);
1493 list_for_each_entry(ctx
, &nfsi
->open_files
, list
) {
1494 if (ctx
->state
!= state
)
1496 get_nfs_open_context(ctx
);
1497 spin_unlock(&state
->inode
->i_lock
);
1500 spin_unlock(&state
->inode
->i_lock
);
1501 return ERR_PTR(-ENOENT
);
1504 static struct nfs4_opendata
*nfs4_open_recoverdata_alloc(struct nfs_open_context
*ctx
,
1505 struct nfs4_state
*state
, enum open_claim_type4 claim
)
1507 struct nfs4_opendata
*opendata
;
1509 opendata
= nfs4_opendata_alloc(ctx
->dentry
, state
->owner
, 0, 0,
1510 NULL
, NULL
, claim
, GFP_NOFS
);
1511 if (opendata
== NULL
)
1512 return ERR_PTR(-ENOMEM
);
1513 opendata
->state
= state
;
1514 atomic_inc(&state
->count
);
1518 static int nfs4_open_recover_helper(struct nfs4_opendata
*opendata
, fmode_t fmode
, struct nfs4_state
**res
)
1520 struct nfs4_state
*newstate
;
1523 opendata
->o_arg
.open_flags
= 0;
1524 opendata
->o_arg
.fmode
= fmode
;
1525 memset(&opendata
->o_res
, 0, sizeof(opendata
->o_res
));
1526 memset(&opendata
->c_res
, 0, sizeof(opendata
->c_res
));
1527 nfs4_init_opendata_res(opendata
);
1528 ret
= _nfs4_recover_proc_open(opendata
);
1531 newstate
= nfs4_opendata_to_nfs4_state(opendata
);
1532 if (IS_ERR(newstate
))
1533 return PTR_ERR(newstate
);
1534 nfs4_close_state(newstate
, fmode
);
1539 static int nfs4_open_recover(struct nfs4_opendata
*opendata
, struct nfs4_state
*state
)
1541 struct nfs4_state
*newstate
;
1544 /* Don't trigger recovery in nfs_test_and_clear_all_open_stateid */
1545 clear_bit(NFS_O_RDWR_STATE
, &state
->flags
);
1546 clear_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
1547 clear_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
1548 /* memory barrier prior to reading state->n_* */
1549 clear_bit(NFS_DELEGATED_STATE
, &state
->flags
);
1550 clear_bit(NFS_OPEN_STATE
, &state
->flags
);
1552 if (state
->n_rdwr
!= 0) {
1553 ret
= nfs4_open_recover_helper(opendata
, FMODE_READ
|FMODE_WRITE
, &newstate
);
1556 if (newstate
!= state
)
1559 if (state
->n_wronly
!= 0) {
1560 ret
= nfs4_open_recover_helper(opendata
, FMODE_WRITE
, &newstate
);
1563 if (newstate
!= state
)
1566 if (state
->n_rdonly
!= 0) {
1567 ret
= nfs4_open_recover_helper(opendata
, FMODE_READ
, &newstate
);
1570 if (newstate
!= state
)
1574 * We may have performed cached opens for all three recoveries.
1575 * Check if we need to update the current stateid.
1577 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) == 0 &&
1578 !nfs4_stateid_match(&state
->stateid
, &state
->open_stateid
)) {
1579 write_seqlock(&state
->seqlock
);
1580 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) == 0)
1581 nfs4_stateid_copy(&state
->stateid
, &state
->open_stateid
);
1582 write_sequnlock(&state
->seqlock
);
1589 * reclaim state on the server after a reboot.
1591 static int _nfs4_do_open_reclaim(struct nfs_open_context
*ctx
, struct nfs4_state
*state
)
1593 struct nfs_delegation
*delegation
;
1594 struct nfs4_opendata
*opendata
;
1595 fmode_t delegation_type
= 0;
1598 opendata
= nfs4_open_recoverdata_alloc(ctx
, state
,
1599 NFS4_OPEN_CLAIM_PREVIOUS
);
1600 if (IS_ERR(opendata
))
1601 return PTR_ERR(opendata
);
1603 delegation
= rcu_dereference(NFS_I(state
->inode
)->delegation
);
1604 if (delegation
!= NULL
&& test_bit(NFS_DELEGATION_NEED_RECLAIM
, &delegation
->flags
) != 0)
1605 delegation_type
= delegation
->type
;
1607 opendata
->o_arg
.u
.delegation_type
= delegation_type
;
1608 status
= nfs4_open_recover(opendata
, state
);
1609 nfs4_opendata_put(opendata
);
1613 static int nfs4_do_open_reclaim(struct nfs_open_context
*ctx
, struct nfs4_state
*state
)
1615 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
1616 struct nfs4_exception exception
= { };
1619 err
= _nfs4_do_open_reclaim(ctx
, state
);
1620 trace_nfs4_open_reclaim(ctx
, 0, err
);
1621 if (nfs4_clear_cap_atomic_open_v1(server
, err
, &exception
))
1623 if (err
!= -NFS4ERR_DELAY
)
1625 nfs4_handle_exception(server
, err
, &exception
);
1626 } while (exception
.retry
);
1630 static int nfs4_open_reclaim(struct nfs4_state_owner
*sp
, struct nfs4_state
*state
)
1632 struct nfs_open_context
*ctx
;
1635 ctx
= nfs4_state_find_open_context(state
);
1638 ret
= nfs4_do_open_reclaim(ctx
, state
);
1639 put_nfs_open_context(ctx
);
1643 static int nfs4_handle_delegation_recall_error(struct nfs_server
*server
, struct nfs4_state
*state
, const nfs4_stateid
*stateid
, int err
)
1647 printk(KERN_ERR
"NFS: %s: unhandled error "
1648 "%d.\n", __func__
, err
);
1653 case -NFS4ERR_BADSESSION
:
1654 case -NFS4ERR_BADSLOT
:
1655 case -NFS4ERR_BAD_HIGH_SLOT
:
1656 case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION
:
1657 case -NFS4ERR_DEADSESSION
:
1658 set_bit(NFS_DELEGATED_STATE
, &state
->flags
);
1659 nfs4_schedule_session_recovery(server
->nfs_client
->cl_session
, err
);
1661 case -NFS4ERR_STALE_CLIENTID
:
1662 case -NFS4ERR_STALE_STATEID
:
1663 set_bit(NFS_DELEGATED_STATE
, &state
->flags
);
1664 case -NFS4ERR_EXPIRED
:
1665 /* Don't recall a delegation if it was lost */
1666 nfs4_schedule_lease_recovery(server
->nfs_client
);
1668 case -NFS4ERR_MOVED
:
1669 nfs4_schedule_migration_recovery(server
);
1671 case -NFS4ERR_LEASE_MOVED
:
1672 nfs4_schedule_lease_moved_recovery(server
->nfs_client
);
1674 case -NFS4ERR_DELEG_REVOKED
:
1675 case -NFS4ERR_ADMIN_REVOKED
:
1676 case -NFS4ERR_BAD_STATEID
:
1677 case -NFS4ERR_OPENMODE
:
1678 nfs_inode_find_state_and_recover(state
->inode
,
1680 nfs4_schedule_stateid_recovery(server
, state
);
1682 case -NFS4ERR_DELAY
:
1683 case -NFS4ERR_GRACE
:
1684 set_bit(NFS_DELEGATED_STATE
, &state
->flags
);
1688 case -NFS4ERR_DENIED
:
1689 /* kill_proc(fl->fl_pid, SIGLOST, 1); */
1695 int nfs4_open_delegation_recall(struct nfs_open_context
*ctx
, struct nfs4_state
*state
, const nfs4_stateid
*stateid
)
1697 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
1698 struct nfs4_opendata
*opendata
;
1701 opendata
= nfs4_open_recoverdata_alloc(ctx
, state
,
1702 NFS4_OPEN_CLAIM_DELEG_CUR_FH
);
1703 if (IS_ERR(opendata
))
1704 return PTR_ERR(opendata
);
1705 nfs4_stateid_copy(&opendata
->o_arg
.u
.delegation
, stateid
);
1706 err
= nfs4_open_recover(opendata
, state
);
1707 nfs4_opendata_put(opendata
);
1708 return nfs4_handle_delegation_recall_error(server
, state
, stateid
, err
);
1711 static void nfs4_open_confirm_prepare(struct rpc_task
*task
, void *calldata
)
1713 struct nfs4_opendata
*data
= calldata
;
1715 nfs40_setup_sequence(data
->o_arg
.server
, &data
->c_arg
.seq_args
,
1716 &data
->c_res
.seq_res
, task
);
1719 static void nfs4_open_confirm_done(struct rpc_task
*task
, void *calldata
)
1721 struct nfs4_opendata
*data
= calldata
;
1723 nfs40_sequence_done(task
, &data
->c_res
.seq_res
);
1725 data
->rpc_status
= task
->tk_status
;
1726 if (data
->rpc_status
== 0) {
1727 nfs4_stateid_copy(&data
->o_res
.stateid
, &data
->c_res
.stateid
);
1728 nfs_confirm_seqid(&data
->owner
->so_seqid
, 0);
1729 renew_lease(data
->o_res
.server
, data
->timestamp
);
1734 static void nfs4_open_confirm_release(void *calldata
)
1736 struct nfs4_opendata
*data
= calldata
;
1737 struct nfs4_state
*state
= NULL
;
1739 /* If this request hasn't been cancelled, do nothing */
1740 if (data
->cancelled
== 0)
1742 /* In case of error, no cleanup! */
1743 if (!data
->rpc_done
)
1745 state
= nfs4_opendata_to_nfs4_state(data
);
1747 nfs4_close_state(state
, data
->o_arg
.fmode
);
1749 nfs4_opendata_put(data
);
1752 static const struct rpc_call_ops nfs4_open_confirm_ops
= {
1753 .rpc_call_prepare
= nfs4_open_confirm_prepare
,
1754 .rpc_call_done
= nfs4_open_confirm_done
,
1755 .rpc_release
= nfs4_open_confirm_release
,
1759 * Note: On error, nfs4_proc_open_confirm will free the struct nfs4_opendata
1761 static int _nfs4_proc_open_confirm(struct nfs4_opendata
*data
)
1763 struct nfs_server
*server
= NFS_SERVER(data
->dir
->d_inode
);
1764 struct rpc_task
*task
;
1765 struct rpc_message msg
= {
1766 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_OPEN_CONFIRM
],
1767 .rpc_argp
= &data
->c_arg
,
1768 .rpc_resp
= &data
->c_res
,
1769 .rpc_cred
= data
->owner
->so_cred
,
1771 struct rpc_task_setup task_setup_data
= {
1772 .rpc_client
= server
->client
,
1773 .rpc_message
= &msg
,
1774 .callback_ops
= &nfs4_open_confirm_ops
,
1775 .callback_data
= data
,
1776 .workqueue
= nfsiod_workqueue
,
1777 .flags
= RPC_TASK_ASYNC
,
1781 nfs4_init_sequence(&data
->c_arg
.seq_args
, &data
->c_res
.seq_res
, 1);
1782 kref_get(&data
->kref
);
1784 data
->rpc_status
= 0;
1785 data
->timestamp
= jiffies
;
1786 task
= rpc_run_task(&task_setup_data
);
1788 return PTR_ERR(task
);
1789 status
= nfs4_wait_for_completion_rpc_task(task
);
1791 data
->cancelled
= 1;
1794 status
= data
->rpc_status
;
1799 static void nfs4_open_prepare(struct rpc_task
*task
, void *calldata
)
1801 struct nfs4_opendata
*data
= calldata
;
1802 struct nfs4_state_owner
*sp
= data
->owner
;
1803 struct nfs_client
*clp
= sp
->so_server
->nfs_client
;
1805 if (nfs_wait_on_sequence(data
->o_arg
.seqid
, task
) != 0)
1808 * Check if we still need to send an OPEN call, or if we can use
1809 * a delegation instead.
1811 if (data
->state
!= NULL
) {
1812 struct nfs_delegation
*delegation
;
1814 if (can_open_cached(data
->state
, data
->o_arg
.fmode
, data
->o_arg
.open_flags
))
1817 delegation
= rcu_dereference(NFS_I(data
->state
->inode
)->delegation
);
1818 if (data
->o_arg
.claim
!= NFS4_OPEN_CLAIM_DELEGATE_CUR
&&
1819 data
->o_arg
.claim
!= NFS4_OPEN_CLAIM_DELEG_CUR_FH
&&
1820 can_open_delegated(delegation
, data
->o_arg
.fmode
))
1821 goto unlock_no_action
;
1824 /* Update client id. */
1825 data
->o_arg
.clientid
= clp
->cl_clientid
;
1826 switch (data
->o_arg
.claim
) {
1827 case NFS4_OPEN_CLAIM_PREVIOUS
:
1828 case NFS4_OPEN_CLAIM_DELEG_CUR_FH
:
1829 case NFS4_OPEN_CLAIM_DELEG_PREV_FH
:
1830 data
->o_arg
.open_bitmap
= &nfs4_open_noattr_bitmap
[0];
1831 case NFS4_OPEN_CLAIM_FH
:
1832 task
->tk_msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_OPEN_NOATTR
];
1833 nfs_copy_fh(&data
->o_res
.fh
, data
->o_arg
.fh
);
1835 data
->timestamp
= jiffies
;
1836 if (nfs4_setup_sequence(data
->o_arg
.server
,
1837 &data
->o_arg
.seq_args
,
1838 &data
->o_res
.seq_res
,
1840 nfs_release_seqid(data
->o_arg
.seqid
);
1842 /* Set the create mode (note dependency on the session type) */
1843 data
->o_arg
.createmode
= NFS4_CREATE_UNCHECKED
;
1844 if (data
->o_arg
.open_flags
& O_EXCL
) {
1845 data
->o_arg
.createmode
= NFS4_CREATE_EXCLUSIVE
;
1846 if (nfs4_has_persistent_session(clp
))
1847 data
->o_arg
.createmode
= NFS4_CREATE_GUARDED
;
1848 else if (clp
->cl_mvops
->minor_version
> 0)
1849 data
->o_arg
.createmode
= NFS4_CREATE_EXCLUSIVE4_1
;
1855 task
->tk_action
= NULL
;
1857 nfs4_sequence_done(task
, &data
->o_res
.seq_res
);
1860 static void nfs4_open_done(struct rpc_task
*task
, void *calldata
)
1862 struct nfs4_opendata
*data
= calldata
;
1864 data
->rpc_status
= task
->tk_status
;
1866 if (!nfs4_sequence_done(task
, &data
->o_res
.seq_res
))
1869 if (task
->tk_status
== 0) {
1870 if (data
->o_res
.f_attr
->valid
& NFS_ATTR_FATTR_TYPE
) {
1871 switch (data
->o_res
.f_attr
->mode
& S_IFMT
) {
1875 data
->rpc_status
= -ELOOP
;
1878 data
->rpc_status
= -EISDIR
;
1881 data
->rpc_status
= -ENOTDIR
;
1884 renew_lease(data
->o_res
.server
, data
->timestamp
);
1885 if (!(data
->o_res
.rflags
& NFS4_OPEN_RESULT_CONFIRM
))
1886 nfs_confirm_seqid(&data
->owner
->so_seqid
, 0);
1891 static void nfs4_open_release(void *calldata
)
1893 struct nfs4_opendata
*data
= calldata
;
1894 struct nfs4_state
*state
= NULL
;
1896 /* If this request hasn't been cancelled, do nothing */
1897 if (data
->cancelled
== 0)
1899 /* In case of error, no cleanup! */
1900 if (data
->rpc_status
!= 0 || !data
->rpc_done
)
1902 /* In case we need an open_confirm, no cleanup! */
1903 if (data
->o_res
.rflags
& NFS4_OPEN_RESULT_CONFIRM
)
1905 state
= nfs4_opendata_to_nfs4_state(data
);
1907 nfs4_close_state(state
, data
->o_arg
.fmode
);
1909 nfs4_opendata_put(data
);
1912 static const struct rpc_call_ops nfs4_open_ops
= {
1913 .rpc_call_prepare
= nfs4_open_prepare
,
1914 .rpc_call_done
= nfs4_open_done
,
1915 .rpc_release
= nfs4_open_release
,
1918 static int nfs4_run_open_task(struct nfs4_opendata
*data
, int isrecover
)
1920 struct inode
*dir
= data
->dir
->d_inode
;
1921 struct nfs_server
*server
= NFS_SERVER(dir
);
1922 struct nfs_openargs
*o_arg
= &data
->o_arg
;
1923 struct nfs_openres
*o_res
= &data
->o_res
;
1924 struct rpc_task
*task
;
1925 struct rpc_message msg
= {
1926 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_OPEN
],
1929 .rpc_cred
= data
->owner
->so_cred
,
1931 struct rpc_task_setup task_setup_data
= {
1932 .rpc_client
= server
->client
,
1933 .rpc_message
= &msg
,
1934 .callback_ops
= &nfs4_open_ops
,
1935 .callback_data
= data
,
1936 .workqueue
= nfsiod_workqueue
,
1937 .flags
= RPC_TASK_ASYNC
,
1941 nfs4_init_sequence(&o_arg
->seq_args
, &o_res
->seq_res
, 1);
1942 kref_get(&data
->kref
);
1944 data
->rpc_status
= 0;
1945 data
->cancelled
= 0;
1946 data
->is_recover
= 0;
1948 nfs4_set_sequence_privileged(&o_arg
->seq_args
);
1949 data
->is_recover
= 1;
1951 task
= rpc_run_task(&task_setup_data
);
1953 return PTR_ERR(task
);
1954 status
= nfs4_wait_for_completion_rpc_task(task
);
1956 data
->cancelled
= 1;
1959 status
= data
->rpc_status
;
1965 static int _nfs4_recover_proc_open(struct nfs4_opendata
*data
)
1967 struct inode
*dir
= data
->dir
->d_inode
;
1968 struct nfs_openres
*o_res
= &data
->o_res
;
1971 status
= nfs4_run_open_task(data
, 1);
1972 if (status
!= 0 || !data
->rpc_done
)
1975 nfs_fattr_map_and_free_names(NFS_SERVER(dir
), &data
->f_attr
);
1977 if (o_res
->rflags
& NFS4_OPEN_RESULT_CONFIRM
) {
1978 status
= _nfs4_proc_open_confirm(data
);
1987 * Additional permission checks in order to distinguish between an
1988 * open for read, and an open for execute. This works around the
1989 * fact that NFSv4 OPEN treats read and execute permissions as being
1991 * Note that in the non-execute case, we want to turn off permission
1992 * checking if we just created a new file (POSIX open() semantics).
1994 static int nfs4_opendata_access(struct rpc_cred
*cred
,
1995 struct nfs4_opendata
*opendata
,
1996 struct nfs4_state
*state
, fmode_t fmode
,
1999 struct nfs_access_entry cache
;
2002 /* access call failed or for some reason the server doesn't
2003 * support any access modes -- defer access call until later */
2004 if (opendata
->o_res
.access_supported
== 0)
2009 * Use openflags to check for exec, because fmode won't
2010 * always have FMODE_EXEC set when file open for exec.
2012 if (openflags
& __FMODE_EXEC
) {
2013 /* ONLY check for exec rights */
2015 } else if ((fmode
& FMODE_READ
) && !opendata
->file_created
)
2019 cache
.jiffies
= jiffies
;
2020 nfs_access_set_mask(&cache
, opendata
->o_res
.access_result
);
2021 nfs_access_add_cache(state
->inode
, &cache
);
2023 if ((mask
& ~cache
.mask
& (MAY_READ
| MAY_EXEC
)) == 0)
2026 /* even though OPEN succeeded, access is denied. Close the file */
2027 nfs4_close_state(state
, fmode
);
2032 * Note: On error, nfs4_proc_open will free the struct nfs4_opendata
2034 static int _nfs4_proc_open(struct nfs4_opendata
*data
)
2036 struct inode
*dir
= data
->dir
->d_inode
;
2037 struct nfs_server
*server
= NFS_SERVER(dir
);
2038 struct nfs_openargs
*o_arg
= &data
->o_arg
;
2039 struct nfs_openres
*o_res
= &data
->o_res
;
2042 status
= nfs4_run_open_task(data
, 0);
2043 if (!data
->rpc_done
)
2046 if (status
== -NFS4ERR_BADNAME
&&
2047 !(o_arg
->open_flags
& O_CREAT
))
2052 nfs_fattr_map_and_free_names(server
, &data
->f_attr
);
2054 if (o_arg
->open_flags
& O_CREAT
) {
2055 update_changeattr(dir
, &o_res
->cinfo
);
2056 if (o_arg
->open_flags
& O_EXCL
)
2057 data
->file_created
= 1;
2058 else if (o_res
->cinfo
.before
!= o_res
->cinfo
.after
)
2059 data
->file_created
= 1;
2061 if ((o_res
->rflags
& NFS4_OPEN_RESULT_LOCKTYPE_POSIX
) == 0)
2062 server
->caps
&= ~NFS_CAP_POSIX_LOCK
;
2063 if(o_res
->rflags
& NFS4_OPEN_RESULT_CONFIRM
) {
2064 status
= _nfs4_proc_open_confirm(data
);
2068 if (!(o_res
->f_attr
->valid
& NFS_ATTR_FATTR
))
2069 nfs4_proc_getattr(server
, &o_res
->fh
, o_res
->f_attr
, o_res
->f_label
);
2073 static int nfs4_recover_expired_lease(struct nfs_server
*server
)
2075 return nfs4_client_recover_expired_lease(server
->nfs_client
);
2080 * reclaim state on the server after a network partition.
2081 * Assumes caller holds the appropriate lock
2083 static int _nfs4_open_expired(struct nfs_open_context
*ctx
, struct nfs4_state
*state
)
2085 struct nfs4_opendata
*opendata
;
2088 opendata
= nfs4_open_recoverdata_alloc(ctx
, state
,
2089 NFS4_OPEN_CLAIM_FH
);
2090 if (IS_ERR(opendata
))
2091 return PTR_ERR(opendata
);
2092 ret
= nfs4_open_recover(opendata
, state
);
2094 d_drop(ctx
->dentry
);
2095 nfs4_opendata_put(opendata
);
2099 static int nfs4_do_open_expired(struct nfs_open_context
*ctx
, struct nfs4_state
*state
)
2101 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
2102 struct nfs4_exception exception
= { };
2106 err
= _nfs4_open_expired(ctx
, state
);
2107 trace_nfs4_open_expired(ctx
, 0, err
);
2108 if (nfs4_clear_cap_atomic_open_v1(server
, err
, &exception
))
2113 case -NFS4ERR_GRACE
:
2114 case -NFS4ERR_DELAY
:
2115 nfs4_handle_exception(server
, err
, &exception
);
2118 } while (exception
.retry
);
2123 static int nfs4_open_expired(struct nfs4_state_owner
*sp
, struct nfs4_state
*state
)
2125 struct nfs_open_context
*ctx
;
2128 ctx
= nfs4_state_find_open_context(state
);
2131 ret
= nfs4_do_open_expired(ctx
, state
);
2132 put_nfs_open_context(ctx
);
2136 static void nfs_finish_clear_delegation_stateid(struct nfs4_state
*state
)
2138 nfs_remove_bad_delegation(state
->inode
);
2139 write_seqlock(&state
->seqlock
);
2140 nfs4_stateid_copy(&state
->stateid
, &state
->open_stateid
);
2141 write_sequnlock(&state
->seqlock
);
2142 clear_bit(NFS_DELEGATED_STATE
, &state
->flags
);
2145 static void nfs40_clear_delegation_stateid(struct nfs4_state
*state
)
2147 if (rcu_access_pointer(NFS_I(state
->inode
)->delegation
) != NULL
)
2148 nfs_finish_clear_delegation_stateid(state
);
2151 static int nfs40_open_expired(struct nfs4_state_owner
*sp
, struct nfs4_state
*state
)
2153 /* NFSv4.0 doesn't allow for delegation recovery on open expire */
2154 nfs40_clear_delegation_stateid(state
);
2155 return nfs4_open_expired(sp
, state
);
2158 #if defined(CONFIG_NFS_V4_1)
2159 static void nfs41_check_delegation_stateid(struct nfs4_state
*state
)
2161 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
2162 nfs4_stateid stateid
;
2163 struct nfs_delegation
*delegation
;
2164 struct rpc_cred
*cred
;
2167 /* Get the delegation credential for use by test/free_stateid */
2169 delegation
= rcu_dereference(NFS_I(state
->inode
)->delegation
);
2170 if (delegation
== NULL
) {
2175 nfs4_stateid_copy(&stateid
, &delegation
->stateid
);
2176 cred
= get_rpccred(delegation
->cred
);
2178 status
= nfs41_test_stateid(server
, &stateid
, cred
);
2179 trace_nfs4_test_delegation_stateid(state
, NULL
, status
);
2181 if (status
!= NFS_OK
) {
2182 /* Free the stateid unless the server explicitly
2183 * informs us the stateid is unrecognized. */
2184 if (status
!= -NFS4ERR_BAD_STATEID
)
2185 nfs41_free_stateid(server
, &stateid
, cred
);
2186 nfs_finish_clear_delegation_stateid(state
);
2193 * nfs41_check_open_stateid - possibly free an open stateid
2195 * @state: NFSv4 state for an inode
2197 * Returns NFS_OK if recovery for this stateid is now finished.
2198 * Otherwise a negative NFS4ERR value is returned.
2200 static int nfs41_check_open_stateid(struct nfs4_state
*state
)
2202 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
2203 nfs4_stateid
*stateid
= &state
->open_stateid
;
2204 struct rpc_cred
*cred
= state
->owner
->so_cred
;
2207 /* If a state reset has been done, test_stateid is unneeded */
2208 if ((test_bit(NFS_O_RDONLY_STATE
, &state
->flags
) == 0) &&
2209 (test_bit(NFS_O_WRONLY_STATE
, &state
->flags
) == 0) &&
2210 (test_bit(NFS_O_RDWR_STATE
, &state
->flags
) == 0))
2211 return -NFS4ERR_BAD_STATEID
;
2213 status
= nfs41_test_stateid(server
, stateid
, cred
);
2214 trace_nfs4_test_open_stateid(state
, NULL
, status
);
2215 if (status
!= NFS_OK
) {
2216 /* Free the stateid unless the server explicitly
2217 * informs us the stateid is unrecognized. */
2218 if (status
!= -NFS4ERR_BAD_STATEID
)
2219 nfs41_free_stateid(server
, stateid
, cred
);
2221 clear_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
2222 clear_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
2223 clear_bit(NFS_O_RDWR_STATE
, &state
->flags
);
2224 clear_bit(NFS_OPEN_STATE
, &state
->flags
);
2229 static int nfs41_open_expired(struct nfs4_state_owner
*sp
, struct nfs4_state
*state
)
2233 nfs41_check_delegation_stateid(state
);
2234 status
= nfs41_check_open_stateid(state
);
2235 if (status
!= NFS_OK
)
2236 status
= nfs4_open_expired(sp
, state
);
2242 * on an EXCLUSIVE create, the server should send back a bitmask with FATTR4-*
2243 * fields corresponding to attributes that were used to store the verifier.
2244 * Make sure we clobber those fields in the later setattr call
2246 static inline void nfs4_exclusive_attrset(struct nfs4_opendata
*opendata
, struct iattr
*sattr
)
2248 if ((opendata
->o_res
.attrset
[1] & FATTR4_WORD1_TIME_ACCESS
) &&
2249 !(sattr
->ia_valid
& ATTR_ATIME_SET
))
2250 sattr
->ia_valid
|= ATTR_ATIME
;
2252 if ((opendata
->o_res
.attrset
[1] & FATTR4_WORD1_TIME_MODIFY
) &&
2253 !(sattr
->ia_valid
& ATTR_MTIME_SET
))
2254 sattr
->ia_valid
|= ATTR_MTIME
;
2257 static int _nfs4_open_and_get_state(struct nfs4_opendata
*opendata
,
2260 struct nfs_open_context
*ctx
)
2262 struct nfs4_state_owner
*sp
= opendata
->owner
;
2263 struct nfs_server
*server
= sp
->so_server
;
2264 struct dentry
*dentry
;
2265 struct nfs4_state
*state
;
2269 seq
= raw_seqcount_begin(&sp
->so_reclaim_seqcount
);
2271 ret
= _nfs4_proc_open(opendata
);
2275 state
= nfs4_opendata_to_nfs4_state(opendata
);
2276 ret
= PTR_ERR(state
);
2279 if (server
->caps
& NFS_CAP_POSIX_LOCK
)
2280 set_bit(NFS_STATE_POSIX_LOCKS
, &state
->flags
);
2282 dentry
= opendata
->dentry
;
2283 if (dentry
->d_inode
== NULL
) {
2284 /* FIXME: Is this d_drop() ever needed? */
2286 dentry
= d_add_unique(dentry
, igrab(state
->inode
));
2287 if (dentry
== NULL
) {
2288 dentry
= opendata
->dentry
;
2289 } else if (dentry
!= ctx
->dentry
) {
2291 ctx
->dentry
= dget(dentry
);
2293 nfs_set_verifier(dentry
,
2294 nfs_save_change_attribute(opendata
->dir
->d_inode
));
2297 ret
= nfs4_opendata_access(sp
->so_cred
, opendata
, state
, fmode
, flags
);
2302 if (dentry
->d_inode
== state
->inode
) {
2303 nfs_inode_attach_open_context(ctx
);
2304 if (read_seqcount_retry(&sp
->so_reclaim_seqcount
, seq
))
2305 nfs4_schedule_stateid_recovery(server
, state
);
2312 * Returns a referenced nfs4_state
2314 static int _nfs4_do_open(struct inode
*dir
,
2315 struct nfs_open_context
*ctx
,
2317 struct iattr
*sattr
,
2318 struct nfs4_label
*label
,
2321 struct nfs4_state_owner
*sp
;
2322 struct nfs4_state
*state
= NULL
;
2323 struct nfs_server
*server
= NFS_SERVER(dir
);
2324 struct nfs4_opendata
*opendata
;
2325 struct dentry
*dentry
= ctx
->dentry
;
2326 struct rpc_cred
*cred
= ctx
->cred
;
2327 struct nfs4_threshold
**ctx_th
= &ctx
->mdsthreshold
;
2328 fmode_t fmode
= ctx
->mode
& (FMODE_READ
|FMODE_WRITE
|FMODE_EXEC
);
2329 enum open_claim_type4 claim
= NFS4_OPEN_CLAIM_NULL
;
2330 struct nfs4_label
*olabel
= NULL
;
2333 /* Protect against reboot recovery conflicts */
2335 sp
= nfs4_get_state_owner(server
, cred
, GFP_KERNEL
);
2337 dprintk("nfs4_do_open: nfs4_get_state_owner failed!\n");
2340 status
= nfs4_recover_expired_lease(server
);
2342 goto err_put_state_owner
;
2343 if (dentry
->d_inode
!= NULL
)
2344 nfs4_return_incompatible_delegation(dentry
->d_inode
, fmode
);
2346 if (dentry
->d_inode
)
2347 claim
= NFS4_OPEN_CLAIM_FH
;
2348 opendata
= nfs4_opendata_alloc(dentry
, sp
, fmode
, flags
, sattr
,
2349 label
, claim
, GFP_KERNEL
);
2350 if (opendata
== NULL
)
2351 goto err_put_state_owner
;
2354 olabel
= nfs4_label_alloc(server
, GFP_KERNEL
);
2355 if (IS_ERR(olabel
)) {
2356 status
= PTR_ERR(olabel
);
2357 goto err_opendata_put
;
2361 if (server
->attr_bitmask
[2] & FATTR4_WORD2_MDSTHRESHOLD
) {
2362 if (!opendata
->f_attr
.mdsthreshold
) {
2363 opendata
->f_attr
.mdsthreshold
= pnfs_mdsthreshold_alloc();
2364 if (!opendata
->f_attr
.mdsthreshold
)
2365 goto err_free_label
;
2367 opendata
->o_arg
.open_bitmap
= &nfs4_pnfs_open_bitmap
[0];
2369 if (dentry
->d_inode
!= NULL
)
2370 opendata
->state
= nfs4_get_open_state(dentry
->d_inode
, sp
);
2372 status
= _nfs4_open_and_get_state(opendata
, fmode
, flags
, ctx
);
2374 goto err_free_label
;
2377 if ((opendata
->o_arg
.open_flags
& O_EXCL
) &&
2378 (opendata
->o_arg
.createmode
!= NFS4_CREATE_GUARDED
)) {
2379 nfs4_exclusive_attrset(opendata
, sattr
);
2381 nfs_fattr_init(opendata
->o_res
.f_attr
);
2382 status
= nfs4_do_setattr(state
->inode
, cred
,
2383 opendata
->o_res
.f_attr
, sattr
,
2384 state
, label
, olabel
);
2386 nfs_setattr_update_inode(state
->inode
, sattr
);
2387 nfs_post_op_update_inode(state
->inode
, opendata
->o_res
.f_attr
);
2388 nfs_setsecurity(state
->inode
, opendata
->o_res
.f_attr
, olabel
);
2391 if (opendata
->file_created
)
2392 *opened
|= FILE_CREATED
;
2394 if (pnfs_use_threshold(ctx_th
, opendata
->f_attr
.mdsthreshold
, server
)) {
2395 *ctx_th
= opendata
->f_attr
.mdsthreshold
;
2396 opendata
->f_attr
.mdsthreshold
= NULL
;
2399 nfs4_label_free(olabel
);
2401 nfs4_opendata_put(opendata
);
2402 nfs4_put_state_owner(sp
);
2405 nfs4_label_free(olabel
);
2407 nfs4_opendata_put(opendata
);
2408 err_put_state_owner
:
2409 nfs4_put_state_owner(sp
);
2415 static struct nfs4_state
*nfs4_do_open(struct inode
*dir
,
2416 struct nfs_open_context
*ctx
,
2418 struct iattr
*sattr
,
2419 struct nfs4_label
*label
,
2422 struct nfs_server
*server
= NFS_SERVER(dir
);
2423 struct nfs4_exception exception
= { };
2424 struct nfs4_state
*res
;
2428 status
= _nfs4_do_open(dir
, ctx
, flags
, sattr
, label
, opened
);
2430 trace_nfs4_open_file(ctx
, flags
, status
);
2433 /* NOTE: BAD_SEQID means the server and client disagree about the
2434 * book-keeping w.r.t. state-changing operations
2435 * (OPEN/CLOSE/LOCK/LOCKU...)
2436 * It is actually a sign of a bug on the client or on the server.
2438 * If we receive a BAD_SEQID error in the particular case of
2439 * doing an OPEN, we assume that nfs_increment_open_seqid() will
2440 * have unhashed the old state_owner for us, and that we can
2441 * therefore safely retry using a new one. We should still warn
2442 * the user though...
2444 if (status
== -NFS4ERR_BAD_SEQID
) {
2445 pr_warn_ratelimited("NFS: v4 server %s "
2446 " returned a bad sequence-id error!\n",
2447 NFS_SERVER(dir
)->nfs_client
->cl_hostname
);
2448 exception
.retry
= 1;
2452 * BAD_STATEID on OPEN means that the server cancelled our
2453 * state before it received the OPEN_CONFIRM.
2454 * Recover by retrying the request as per the discussion
2455 * on Page 181 of RFC3530.
2457 if (status
== -NFS4ERR_BAD_STATEID
) {
2458 exception
.retry
= 1;
2461 if (status
== -EAGAIN
) {
2462 /* We must have found a delegation */
2463 exception
.retry
= 1;
2466 if (nfs4_clear_cap_atomic_open_v1(server
, status
, &exception
))
2468 res
= ERR_PTR(nfs4_handle_exception(server
,
2469 status
, &exception
));
2470 } while (exception
.retry
);
2474 static int _nfs4_do_setattr(struct inode
*inode
, struct rpc_cred
*cred
,
2475 struct nfs_fattr
*fattr
, struct iattr
*sattr
,
2476 struct nfs4_state
*state
, struct nfs4_label
*ilabel
,
2477 struct nfs4_label
*olabel
)
2479 struct nfs_server
*server
= NFS_SERVER(inode
);
2480 struct nfs_setattrargs arg
= {
2481 .fh
= NFS_FH(inode
),
2484 .bitmask
= server
->attr_bitmask
,
2487 struct nfs_setattrres res
= {
2492 struct rpc_message msg
= {
2493 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETATTR
],
2498 unsigned long timestamp
= jiffies
;
2503 arg
.bitmask
= nfs4_bitmask(server
, ilabel
);
2505 arg
.bitmask
= nfs4_bitmask(server
, olabel
);
2507 nfs_fattr_init(fattr
);
2509 /* Servers should only apply open mode checks for file size changes */
2510 truncate
= (sattr
->ia_valid
& ATTR_SIZE
) ? true : false;
2511 fmode
= truncate
? FMODE_WRITE
: FMODE_READ
;
2513 if (nfs4_copy_delegation_stateid(&arg
.stateid
, inode
, fmode
)) {
2514 /* Use that stateid */
2515 } else if (truncate
&& state
!= NULL
) {
2516 struct nfs_lockowner lockowner
= {
2517 .l_owner
= current
->files
,
2518 .l_pid
= current
->tgid
,
2520 if (!nfs4_valid_open_stateid(state
))
2522 if (nfs4_select_rw_stateid(&arg
.stateid
, state
, FMODE_WRITE
,
2523 &lockowner
) == -EIO
)
2526 nfs4_stateid_copy(&arg
.stateid
, &zero_stateid
);
2528 status
= nfs4_call_sync(server
->client
, server
, &msg
, &arg
.seq_args
, &res
.seq_res
, 1);
2529 if (status
== 0 && state
!= NULL
)
2530 renew_lease(server
, timestamp
);
2534 static int nfs4_do_setattr(struct inode
*inode
, struct rpc_cred
*cred
,
2535 struct nfs_fattr
*fattr
, struct iattr
*sattr
,
2536 struct nfs4_state
*state
, struct nfs4_label
*ilabel
,
2537 struct nfs4_label
*olabel
)
2539 struct nfs_server
*server
= NFS_SERVER(inode
);
2540 struct nfs4_exception exception
= {
2546 err
= _nfs4_do_setattr(inode
, cred
, fattr
, sattr
, state
, ilabel
, olabel
);
2547 trace_nfs4_setattr(inode
, err
);
2549 case -NFS4ERR_OPENMODE
:
2550 if (!(sattr
->ia_valid
& ATTR_SIZE
)) {
2551 pr_warn_once("NFSv4: server %s is incorrectly "
2552 "applying open mode checks to "
2553 "a SETATTR that is not "
2554 "changing file size.\n",
2555 server
->nfs_client
->cl_hostname
);
2557 if (state
&& !(state
->state
& FMODE_WRITE
)) {
2559 if (sattr
->ia_valid
& ATTR_OPEN
)
2564 err
= nfs4_handle_exception(server
, err
, &exception
);
2565 } while (exception
.retry
);
2570 struct nfs4_closedata
{
2571 struct inode
*inode
;
2572 struct nfs4_state
*state
;
2573 struct nfs_closeargs arg
;
2574 struct nfs_closeres res
;
2575 struct nfs_fattr fattr
;
2576 unsigned long timestamp
;
2581 static void nfs4_free_closedata(void *data
)
2583 struct nfs4_closedata
*calldata
= data
;
2584 struct nfs4_state_owner
*sp
= calldata
->state
->owner
;
2585 struct super_block
*sb
= calldata
->state
->inode
->i_sb
;
2588 pnfs_roc_release(calldata
->state
->inode
);
2589 nfs4_put_open_state(calldata
->state
);
2590 nfs_free_seqid(calldata
->arg
.seqid
);
2591 nfs4_put_state_owner(sp
);
2592 nfs_sb_deactive(sb
);
2596 static void nfs4_close_done(struct rpc_task
*task
, void *data
)
2598 struct nfs4_closedata
*calldata
= data
;
2599 struct nfs4_state
*state
= calldata
->state
;
2600 struct nfs_server
*server
= NFS_SERVER(calldata
->inode
);
2601 nfs4_stateid
*res_stateid
= NULL
;
2603 dprintk("%s: begin!\n", __func__
);
2604 if (!nfs4_sequence_done(task
, &calldata
->res
.seq_res
))
2606 trace_nfs4_close(state
, &calldata
->arg
, &calldata
->res
, task
->tk_status
);
2607 /* hmm. we are done with the inode, and in the process of freeing
2608 * the state_owner. we keep this around to process errors
2610 switch (task
->tk_status
) {
2612 res_stateid
= &calldata
->res
.stateid
;
2613 if (calldata
->arg
.fmode
== 0 && calldata
->roc
)
2614 pnfs_roc_set_barrier(state
->inode
,
2615 calldata
->roc_barrier
);
2616 renew_lease(server
, calldata
->timestamp
);
2618 case -NFS4ERR_ADMIN_REVOKED
:
2619 case -NFS4ERR_STALE_STATEID
:
2620 case -NFS4ERR_OLD_STATEID
:
2621 case -NFS4ERR_BAD_STATEID
:
2622 case -NFS4ERR_EXPIRED
:
2623 if (!nfs4_stateid_match(&calldata
->arg
.stateid
,
2625 rpc_restart_call_prepare(task
);
2628 if (calldata
->arg
.fmode
== 0)
2631 if (nfs4_async_handle_error(task
, server
, state
, NULL
) == -EAGAIN
) {
2632 rpc_restart_call_prepare(task
);
2636 nfs_clear_open_stateid(state
, res_stateid
, calldata
->arg
.fmode
);
2638 nfs_release_seqid(calldata
->arg
.seqid
);
2639 nfs_refresh_inode(calldata
->inode
, calldata
->res
.fattr
);
2640 dprintk("%s: done, ret = %d!\n", __func__
, task
->tk_status
);
2643 static void nfs4_close_prepare(struct rpc_task
*task
, void *data
)
2645 struct nfs4_closedata
*calldata
= data
;
2646 struct nfs4_state
*state
= calldata
->state
;
2647 struct inode
*inode
= calldata
->inode
;
2648 bool is_rdonly
, is_wronly
, is_rdwr
;
2651 dprintk("%s: begin!\n", __func__
);
2652 if (nfs_wait_on_sequence(calldata
->arg
.seqid
, task
) != 0)
2655 task
->tk_msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_OPEN_DOWNGRADE
];
2656 spin_lock(&state
->owner
->so_lock
);
2657 is_rdwr
= test_bit(NFS_O_RDWR_STATE
, &state
->flags
);
2658 is_rdonly
= test_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
2659 is_wronly
= test_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
2660 nfs4_stateid_copy(&calldata
->arg
.stateid
, &state
->stateid
);
2661 /* Calculate the change in open mode */
2662 calldata
->arg
.fmode
= 0;
2663 if (state
->n_rdwr
== 0) {
2664 if (state
->n_rdonly
== 0)
2665 call_close
|= is_rdonly
;
2667 calldata
->arg
.fmode
|= FMODE_READ
;
2668 if (state
->n_wronly
== 0)
2669 call_close
|= is_wronly
;
2671 calldata
->arg
.fmode
|= FMODE_WRITE
;
2673 calldata
->arg
.fmode
|= FMODE_READ
|FMODE_WRITE
;
2675 if (calldata
->arg
.fmode
== 0)
2676 call_close
|= is_rdwr
;
2678 if (!nfs4_valid_open_stateid(state
))
2680 spin_unlock(&state
->owner
->so_lock
);
2683 /* Note: exit _without_ calling nfs4_close_done */
2687 if (calldata
->arg
.fmode
== 0) {
2688 task
->tk_msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_CLOSE
];
2689 if (calldata
->roc
&&
2690 pnfs_roc_drain(inode
, &calldata
->roc_barrier
, task
)) {
2691 nfs_release_seqid(calldata
->arg
.seqid
);
2696 nfs_fattr_init(calldata
->res
.fattr
);
2697 calldata
->timestamp
= jiffies
;
2698 if (nfs4_setup_sequence(NFS_SERVER(inode
),
2699 &calldata
->arg
.seq_args
,
2700 &calldata
->res
.seq_res
,
2702 nfs_release_seqid(calldata
->arg
.seqid
);
2703 dprintk("%s: done!\n", __func__
);
2706 task
->tk_action
= NULL
;
2708 nfs4_sequence_done(task
, &calldata
->res
.seq_res
);
2711 static const struct rpc_call_ops nfs4_close_ops
= {
2712 .rpc_call_prepare
= nfs4_close_prepare
,
2713 .rpc_call_done
= nfs4_close_done
,
2714 .rpc_release
= nfs4_free_closedata
,
2717 static bool nfs4_state_has_opener(struct nfs4_state
*state
)
2719 /* first check existing openers */
2720 if (test_bit(NFS_O_RDONLY_STATE
, &state
->flags
) != 0 &&
2721 state
->n_rdonly
!= 0)
2724 if (test_bit(NFS_O_WRONLY_STATE
, &state
->flags
) != 0 &&
2725 state
->n_wronly
!= 0)
2728 if (test_bit(NFS_O_RDWR_STATE
, &state
->flags
) != 0 &&
2735 static bool nfs4_roc(struct inode
*inode
)
2737 struct nfs_inode
*nfsi
= NFS_I(inode
);
2738 struct nfs_open_context
*ctx
;
2739 struct nfs4_state
*state
;
2741 spin_lock(&inode
->i_lock
);
2742 list_for_each_entry(ctx
, &nfsi
->open_files
, list
) {
2746 if (nfs4_state_has_opener(state
)) {
2747 spin_unlock(&inode
->i_lock
);
2751 spin_unlock(&inode
->i_lock
);
2753 if (nfs4_check_delegation(inode
, FMODE_READ
))
2756 return pnfs_roc(inode
);
2760 * It is possible for data to be read/written from a mem-mapped file
2761 * after the sys_close call (which hits the vfs layer as a flush).
2762 * This means that we can't safely call nfsv4 close on a file until
2763 * the inode is cleared. This in turn means that we are not good
2764 * NFSv4 citizens - we do not indicate to the server to update the file's
2765 * share state even when we are done with one of the three share
2766 * stateid's in the inode.
2768 * NOTE: Caller must be holding the sp->so_owner semaphore!
2770 int nfs4_do_close(struct nfs4_state
*state
, gfp_t gfp_mask
, int wait
)
2772 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
2773 struct nfs_seqid
*(*alloc_seqid
)(struct nfs_seqid_counter
*, gfp_t
);
2774 struct nfs4_closedata
*calldata
;
2775 struct nfs4_state_owner
*sp
= state
->owner
;
2776 struct rpc_task
*task
;
2777 struct rpc_message msg
= {
2778 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_CLOSE
],
2779 .rpc_cred
= state
->owner
->so_cred
,
2781 struct rpc_task_setup task_setup_data
= {
2782 .rpc_client
= server
->client
,
2783 .rpc_message
= &msg
,
2784 .callback_ops
= &nfs4_close_ops
,
2785 .workqueue
= nfsiod_workqueue
,
2786 .flags
= RPC_TASK_ASYNC
,
2788 int status
= -ENOMEM
;
2790 nfs4_state_protect(server
->nfs_client
, NFS_SP4_MACH_CRED_CLEANUP
,
2791 &task_setup_data
.rpc_client
, &msg
);
2793 calldata
= kzalloc(sizeof(*calldata
), gfp_mask
);
2794 if (calldata
== NULL
)
2796 nfs4_init_sequence(&calldata
->arg
.seq_args
, &calldata
->res
.seq_res
, 1);
2797 calldata
->inode
= state
->inode
;
2798 calldata
->state
= state
;
2799 calldata
->arg
.fh
= NFS_FH(state
->inode
);
2800 /* Serialization for the sequence id */
2801 alloc_seqid
= server
->nfs_client
->cl_mvops
->alloc_seqid
;
2802 calldata
->arg
.seqid
= alloc_seqid(&state
->owner
->so_seqid
, gfp_mask
);
2803 if (IS_ERR(calldata
->arg
.seqid
))
2804 goto out_free_calldata
;
2805 calldata
->arg
.fmode
= 0;
2806 calldata
->arg
.bitmask
= server
->cache_consistency_bitmask
;
2807 calldata
->res
.fattr
= &calldata
->fattr
;
2808 calldata
->res
.seqid
= calldata
->arg
.seqid
;
2809 calldata
->res
.server
= server
;
2810 calldata
->roc
= nfs4_roc(state
->inode
);
2811 nfs_sb_active(calldata
->inode
->i_sb
);
2813 msg
.rpc_argp
= &calldata
->arg
;
2814 msg
.rpc_resp
= &calldata
->res
;
2815 task_setup_data
.callback_data
= calldata
;
2816 task
= rpc_run_task(&task_setup_data
);
2818 return PTR_ERR(task
);
2821 status
= rpc_wait_for_completion_task(task
);
2827 nfs4_put_open_state(state
);
2828 nfs4_put_state_owner(sp
);
2832 static struct inode
*
2833 nfs4_atomic_open(struct inode
*dir
, struct nfs_open_context
*ctx
,
2834 int open_flags
, struct iattr
*attr
, int *opened
)
2836 struct nfs4_state
*state
;
2837 struct nfs4_label l
= {0, 0, 0, NULL
}, *label
= NULL
;
2839 label
= nfs4_label_init_security(dir
, ctx
->dentry
, attr
, &l
);
2841 /* Protect against concurrent sillydeletes */
2842 state
= nfs4_do_open(dir
, ctx
, open_flags
, attr
, label
, opened
);
2844 nfs4_label_release_security(label
);
2847 return ERR_CAST(state
);
2848 return state
->inode
;
2851 static void nfs4_close_context(struct nfs_open_context
*ctx
, int is_sync
)
2853 if (ctx
->state
== NULL
)
2856 nfs4_close_sync(ctx
->state
, ctx
->mode
);
2858 nfs4_close_state(ctx
->state
, ctx
->mode
);
2861 #define FATTR4_WORD1_NFS40_MASK (2*FATTR4_WORD1_MOUNTED_ON_FILEID - 1UL)
2862 #define FATTR4_WORD2_NFS41_MASK (2*FATTR4_WORD2_SUPPATTR_EXCLCREAT - 1UL)
2863 #define FATTR4_WORD2_NFS42_MASK (2*FATTR4_WORD2_SECURITY_LABEL - 1UL)
2865 static int _nfs4_server_capabilities(struct nfs_server
*server
, struct nfs_fh
*fhandle
)
2867 struct nfs4_server_caps_arg args
= {
2870 struct nfs4_server_caps_res res
= {};
2871 struct rpc_message msg
= {
2872 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SERVER_CAPS
],
2878 status
= nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
2880 /* Sanity check the server answers */
2881 switch (server
->nfs_client
->cl_minorversion
) {
2883 res
.attr_bitmask
[1] &= FATTR4_WORD1_NFS40_MASK
;
2884 res
.attr_bitmask
[2] = 0;
2887 res
.attr_bitmask
[2] &= FATTR4_WORD2_NFS41_MASK
;
2890 res
.attr_bitmask
[2] &= FATTR4_WORD2_NFS42_MASK
;
2892 memcpy(server
->attr_bitmask
, res
.attr_bitmask
, sizeof(server
->attr_bitmask
));
2893 server
->caps
&= ~(NFS_CAP_ACLS
|NFS_CAP_HARDLINKS
|
2894 NFS_CAP_SYMLINKS
|NFS_CAP_FILEID
|
2895 NFS_CAP_MODE
|NFS_CAP_NLINK
|NFS_CAP_OWNER
|
2896 NFS_CAP_OWNER_GROUP
|NFS_CAP_ATIME
|
2897 NFS_CAP_CTIME
|NFS_CAP_MTIME
|
2898 NFS_CAP_SECURITY_LABEL
);
2899 if (res
.attr_bitmask
[0] & FATTR4_WORD0_ACL
&&
2900 res
.acl_bitmask
& ACL4_SUPPORT_ALLOW_ACL
)
2901 server
->caps
|= NFS_CAP_ACLS
;
2902 if (res
.has_links
!= 0)
2903 server
->caps
|= NFS_CAP_HARDLINKS
;
2904 if (res
.has_symlinks
!= 0)
2905 server
->caps
|= NFS_CAP_SYMLINKS
;
2906 if (res
.attr_bitmask
[0] & FATTR4_WORD0_FILEID
)
2907 server
->caps
|= NFS_CAP_FILEID
;
2908 if (res
.attr_bitmask
[1] & FATTR4_WORD1_MODE
)
2909 server
->caps
|= NFS_CAP_MODE
;
2910 if (res
.attr_bitmask
[1] & FATTR4_WORD1_NUMLINKS
)
2911 server
->caps
|= NFS_CAP_NLINK
;
2912 if (res
.attr_bitmask
[1] & FATTR4_WORD1_OWNER
)
2913 server
->caps
|= NFS_CAP_OWNER
;
2914 if (res
.attr_bitmask
[1] & FATTR4_WORD1_OWNER_GROUP
)
2915 server
->caps
|= NFS_CAP_OWNER_GROUP
;
2916 if (res
.attr_bitmask
[1] & FATTR4_WORD1_TIME_ACCESS
)
2917 server
->caps
|= NFS_CAP_ATIME
;
2918 if (res
.attr_bitmask
[1] & FATTR4_WORD1_TIME_METADATA
)
2919 server
->caps
|= NFS_CAP_CTIME
;
2920 if (res
.attr_bitmask
[1] & FATTR4_WORD1_TIME_MODIFY
)
2921 server
->caps
|= NFS_CAP_MTIME
;
2922 #ifdef CONFIG_NFS_V4_SECURITY_LABEL
2923 if (res
.attr_bitmask
[2] & FATTR4_WORD2_SECURITY_LABEL
)
2924 server
->caps
|= NFS_CAP_SECURITY_LABEL
;
2926 memcpy(server
->attr_bitmask_nl
, res
.attr_bitmask
,
2927 sizeof(server
->attr_bitmask
));
2928 server
->attr_bitmask_nl
[2] &= ~FATTR4_WORD2_SECURITY_LABEL
;
2930 memcpy(server
->cache_consistency_bitmask
, res
.attr_bitmask
, sizeof(server
->cache_consistency_bitmask
));
2931 server
->cache_consistency_bitmask
[0] &= FATTR4_WORD0_CHANGE
|FATTR4_WORD0_SIZE
;
2932 server
->cache_consistency_bitmask
[1] &= FATTR4_WORD1_TIME_METADATA
|FATTR4_WORD1_TIME_MODIFY
;
2933 server
->cache_consistency_bitmask
[2] = 0;
2934 server
->acl_bitmask
= res
.acl_bitmask
;
2935 server
->fh_expire_type
= res
.fh_expire_type
;
2941 int nfs4_server_capabilities(struct nfs_server
*server
, struct nfs_fh
*fhandle
)
2943 struct nfs4_exception exception
= { };
2946 err
= nfs4_handle_exception(server
,
2947 _nfs4_server_capabilities(server
, fhandle
),
2949 } while (exception
.retry
);
2953 static int _nfs4_lookup_root(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
2954 struct nfs_fsinfo
*info
)
2957 struct nfs4_lookup_root_arg args
= {
2960 struct nfs4_lookup_res res
= {
2962 .fattr
= info
->fattr
,
2965 struct rpc_message msg
= {
2966 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOOKUP_ROOT
],
2971 bitmask
[0] = nfs4_fattr_bitmap
[0];
2972 bitmask
[1] = nfs4_fattr_bitmap
[1];
2974 * Process the label in the upcoming getfattr
2976 bitmask
[2] = nfs4_fattr_bitmap
[2] & ~FATTR4_WORD2_SECURITY_LABEL
;
2978 nfs_fattr_init(info
->fattr
);
2979 return nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
2982 static int nfs4_lookup_root(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
2983 struct nfs_fsinfo
*info
)
2985 struct nfs4_exception exception
= { };
2988 err
= _nfs4_lookup_root(server
, fhandle
, info
);
2989 trace_nfs4_lookup_root(server
, fhandle
, info
->fattr
, err
);
2992 case -NFS4ERR_WRONGSEC
:
2995 err
= nfs4_handle_exception(server
, err
, &exception
);
2997 } while (exception
.retry
);
3002 static int nfs4_lookup_root_sec(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
3003 struct nfs_fsinfo
*info
, rpc_authflavor_t flavor
)
3005 struct rpc_auth_create_args auth_args
= {
3006 .pseudoflavor
= flavor
,
3008 struct rpc_auth
*auth
;
3011 auth
= rpcauth_create(&auth_args
, server
->client
);
3016 ret
= nfs4_lookup_root(server
, fhandle
, info
);
3022 * Retry pseudoroot lookup with various security flavors. We do this when:
3024 * NFSv4.0: the PUTROOTFH operation returns NFS4ERR_WRONGSEC
3025 * NFSv4.1: the server does not support the SECINFO_NO_NAME operation
3027 * Returns zero on success, or a negative NFS4ERR value, or a
3028 * negative errno value.
3030 static int nfs4_find_root_sec(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
3031 struct nfs_fsinfo
*info
)
3033 /* Per 3530bis 15.33.5 */
3034 static const rpc_authflavor_t flav_array
[] = {
3038 RPC_AUTH_UNIX
, /* courtesy */
3041 int status
= -EPERM
;
3044 if (server
->auth_info
.flavor_len
> 0) {
3045 /* try each flavor specified by user */
3046 for (i
= 0; i
< server
->auth_info
.flavor_len
; i
++) {
3047 status
= nfs4_lookup_root_sec(server
, fhandle
, info
,
3048 server
->auth_info
.flavors
[i
]);
3049 if (status
== -NFS4ERR_WRONGSEC
|| status
== -EACCES
)
3054 /* no flavors specified by user, try default list */
3055 for (i
= 0; i
< ARRAY_SIZE(flav_array
); i
++) {
3056 status
= nfs4_lookup_root_sec(server
, fhandle
, info
,
3058 if (status
== -NFS4ERR_WRONGSEC
|| status
== -EACCES
)
3065 * -EACCESS could mean that the user doesn't have correct permissions
3066 * to access the mount. It could also mean that we tried to mount
3067 * with a gss auth flavor, but rpc.gssd isn't running. Either way,
3068 * existing mount programs don't handle -EACCES very well so it should
3069 * be mapped to -EPERM instead.
3071 if (status
== -EACCES
)
3076 static int nfs4_do_find_root_sec(struct nfs_server
*server
,
3077 struct nfs_fh
*fhandle
, struct nfs_fsinfo
*info
)
3079 int mv
= server
->nfs_client
->cl_minorversion
;
3080 return nfs_v4_minor_ops
[mv
]->find_root_sec(server
, fhandle
, info
);
3084 * nfs4_proc_get_rootfh - get file handle for server's pseudoroot
3085 * @server: initialized nfs_server handle
3086 * @fhandle: we fill in the pseudo-fs root file handle
3087 * @info: we fill in an FSINFO struct
3088 * @auth_probe: probe the auth flavours
3090 * Returns zero on success, or a negative errno.
3092 int nfs4_proc_get_rootfh(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
3093 struct nfs_fsinfo
*info
,
3098 switch (auth_probe
) {
3100 status
= nfs4_lookup_root(server
, fhandle
, info
);
3101 if (status
!= -NFS4ERR_WRONGSEC
)
3104 status
= nfs4_do_find_root_sec(server
, fhandle
, info
);
3108 status
= nfs4_server_capabilities(server
, fhandle
);
3110 status
= nfs4_do_fsinfo(server
, fhandle
, info
);
3112 return nfs4_map_errors(status
);
3115 static int nfs4_proc_get_root(struct nfs_server
*server
, struct nfs_fh
*mntfh
,
3116 struct nfs_fsinfo
*info
)
3119 struct nfs_fattr
*fattr
= info
->fattr
;
3120 struct nfs4_label
*label
= NULL
;
3122 error
= nfs4_server_capabilities(server
, mntfh
);
3124 dprintk("nfs4_get_root: getcaps error = %d\n", -error
);
3128 label
= nfs4_label_alloc(server
, GFP_KERNEL
);
3130 return PTR_ERR(label
);
3132 error
= nfs4_proc_getattr(server
, mntfh
, fattr
, label
);
3134 dprintk("nfs4_get_root: getattr error = %d\n", -error
);
3135 goto err_free_label
;
3138 if (fattr
->valid
& NFS_ATTR_FATTR_FSID
&&
3139 !nfs_fsid_equal(&server
->fsid
, &fattr
->fsid
))
3140 memcpy(&server
->fsid
, &fattr
->fsid
, sizeof(server
->fsid
));
3143 nfs4_label_free(label
);
3149 * Get locations and (maybe) other attributes of a referral.
3150 * Note that we'll actually follow the referral later when
3151 * we detect fsid mismatch in inode revalidation
3153 static int nfs4_get_referral(struct rpc_clnt
*client
, struct inode
*dir
,
3154 const struct qstr
*name
, struct nfs_fattr
*fattr
,
3155 struct nfs_fh
*fhandle
)
3157 int status
= -ENOMEM
;
3158 struct page
*page
= NULL
;
3159 struct nfs4_fs_locations
*locations
= NULL
;
3161 page
= alloc_page(GFP_KERNEL
);
3164 locations
= kmalloc(sizeof(struct nfs4_fs_locations
), GFP_KERNEL
);
3165 if (locations
== NULL
)
3168 status
= nfs4_proc_fs_locations(client
, dir
, name
, locations
, page
);
3173 * If the fsid didn't change, this is a migration event, not a
3174 * referral. Cause us to drop into the exception handler, which
3175 * will kick off migration recovery.
3177 if (nfs_fsid_equal(&NFS_SERVER(dir
)->fsid
, &locations
->fattr
.fsid
)) {
3178 dprintk("%s: server did not return a different fsid for"
3179 " a referral at %s\n", __func__
, name
->name
);
3180 status
= -NFS4ERR_MOVED
;
3183 /* Fixup attributes for the nfs_lookup() call to nfs_fhget() */
3184 nfs_fixup_referral_attributes(&locations
->fattr
);
3186 /* replace the lookup nfs_fattr with the locations nfs_fattr */
3187 memcpy(fattr
, &locations
->fattr
, sizeof(struct nfs_fattr
));
3188 memset(fhandle
, 0, sizeof(struct nfs_fh
));
3196 static int _nfs4_proc_getattr(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
3197 struct nfs_fattr
*fattr
, struct nfs4_label
*label
)
3199 struct nfs4_getattr_arg args
= {
3201 .bitmask
= server
->attr_bitmask
,
3203 struct nfs4_getattr_res res
= {
3208 struct rpc_message msg
= {
3209 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GETATTR
],
3214 args
.bitmask
= nfs4_bitmask(server
, label
);
3216 nfs_fattr_init(fattr
);
3217 return nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
3220 static int nfs4_proc_getattr(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
3221 struct nfs_fattr
*fattr
, struct nfs4_label
*label
)
3223 struct nfs4_exception exception
= { };
3226 err
= _nfs4_proc_getattr(server
, fhandle
, fattr
, label
);
3227 trace_nfs4_getattr(server
, fhandle
, fattr
, err
);
3228 err
= nfs4_handle_exception(server
, err
,
3230 } while (exception
.retry
);
3235 * The file is not closed if it is opened due to the a request to change
3236 * the size of the file. The open call will not be needed once the
3237 * VFS layer lookup-intents are implemented.
3239 * Close is called when the inode is destroyed.
3240 * If we haven't opened the file for O_WRONLY, we
3241 * need to in the size_change case to obtain a stateid.
3244 * Because OPEN is always done by name in nfsv4, it is
3245 * possible that we opened a different file by the same
3246 * name. We can recognize this race condition, but we
3247 * can't do anything about it besides returning an error.
3249 * This will be fixed with VFS changes (lookup-intent).
3252 nfs4_proc_setattr(struct dentry
*dentry
, struct nfs_fattr
*fattr
,
3253 struct iattr
*sattr
)
3255 struct inode
*inode
= dentry
->d_inode
;
3256 struct rpc_cred
*cred
= NULL
;
3257 struct nfs4_state
*state
= NULL
;
3258 struct nfs4_label
*label
= NULL
;
3261 if (pnfs_ld_layoutret_on_setattr(inode
) &&
3262 sattr
->ia_valid
& ATTR_SIZE
&&
3263 sattr
->ia_size
< i_size_read(inode
))
3264 pnfs_commit_and_return_layout(inode
);
3266 nfs_fattr_init(fattr
);
3268 /* Deal with open(O_TRUNC) */
3269 if (sattr
->ia_valid
& ATTR_OPEN
)
3270 sattr
->ia_valid
&= ~(ATTR_MTIME
|ATTR_CTIME
);
3272 /* Optimization: if the end result is no change, don't RPC */
3273 if ((sattr
->ia_valid
& ~(ATTR_FILE
|ATTR_OPEN
)) == 0)
3276 /* Search for an existing open(O_WRITE) file */
3277 if (sattr
->ia_valid
& ATTR_FILE
) {
3278 struct nfs_open_context
*ctx
;
3280 ctx
= nfs_file_open_context(sattr
->ia_file
);
3287 label
= nfs4_label_alloc(NFS_SERVER(inode
), GFP_KERNEL
);
3289 return PTR_ERR(label
);
3291 status
= nfs4_do_setattr(inode
, cred
, fattr
, sattr
, state
, NULL
, label
);
3293 nfs_setattr_update_inode(inode
, sattr
);
3294 nfs_setsecurity(inode
, fattr
, label
);
3296 nfs4_label_free(label
);
3300 static int _nfs4_proc_lookup(struct rpc_clnt
*clnt
, struct inode
*dir
,
3301 const struct qstr
*name
, struct nfs_fh
*fhandle
,
3302 struct nfs_fattr
*fattr
, struct nfs4_label
*label
)
3304 struct nfs_server
*server
= NFS_SERVER(dir
);
3306 struct nfs4_lookup_arg args
= {
3307 .bitmask
= server
->attr_bitmask
,
3308 .dir_fh
= NFS_FH(dir
),
3311 struct nfs4_lookup_res res
= {
3317 struct rpc_message msg
= {
3318 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOOKUP
],
3323 args
.bitmask
= nfs4_bitmask(server
, label
);
3325 nfs_fattr_init(fattr
);
3327 dprintk("NFS call lookup %s\n", name
->name
);
3328 status
= nfs4_call_sync(clnt
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
3329 dprintk("NFS reply lookup: %d\n", status
);
3333 static void nfs_fixup_secinfo_attributes(struct nfs_fattr
*fattr
)
3335 fattr
->valid
|= NFS_ATTR_FATTR_TYPE
| NFS_ATTR_FATTR_MODE
|
3336 NFS_ATTR_FATTR_NLINK
| NFS_ATTR_FATTR_MOUNTPOINT
;
3337 fattr
->mode
= S_IFDIR
| S_IRUGO
| S_IXUGO
;
3341 static int nfs4_proc_lookup_common(struct rpc_clnt
**clnt
, struct inode
*dir
,
3342 struct qstr
*name
, struct nfs_fh
*fhandle
,
3343 struct nfs_fattr
*fattr
, struct nfs4_label
*label
)
3345 struct nfs4_exception exception
= { };
3346 struct rpc_clnt
*client
= *clnt
;
3349 err
= _nfs4_proc_lookup(client
, dir
, name
, fhandle
, fattr
, label
);
3350 trace_nfs4_lookup(dir
, name
, err
);
3352 case -NFS4ERR_BADNAME
:
3355 case -NFS4ERR_MOVED
:
3356 err
= nfs4_get_referral(client
, dir
, name
, fattr
, fhandle
);
3358 case -NFS4ERR_WRONGSEC
:
3360 if (client
!= *clnt
)
3362 client
= nfs4_negotiate_security(client
, dir
, name
);
3364 return PTR_ERR(client
);
3366 exception
.retry
= 1;
3369 err
= nfs4_handle_exception(NFS_SERVER(dir
), err
, &exception
);
3371 } while (exception
.retry
);
3376 else if (client
!= *clnt
)
3377 rpc_shutdown_client(client
);
3382 static int nfs4_proc_lookup(struct inode
*dir
, struct qstr
*name
,
3383 struct nfs_fh
*fhandle
, struct nfs_fattr
*fattr
,
3384 struct nfs4_label
*label
)
3387 struct rpc_clnt
*client
= NFS_CLIENT(dir
);
3389 status
= nfs4_proc_lookup_common(&client
, dir
, name
, fhandle
, fattr
, label
);
3390 if (client
!= NFS_CLIENT(dir
)) {
3391 rpc_shutdown_client(client
);
3392 nfs_fixup_secinfo_attributes(fattr
);
3398 nfs4_proc_lookup_mountpoint(struct inode
*dir
, struct qstr
*name
,
3399 struct nfs_fh
*fhandle
, struct nfs_fattr
*fattr
)
3401 struct rpc_clnt
*client
= NFS_CLIENT(dir
);
3404 status
= nfs4_proc_lookup_common(&client
, dir
, name
, fhandle
, fattr
, NULL
);
3406 return ERR_PTR(status
);
3407 return (client
== NFS_CLIENT(dir
)) ? rpc_clone_client(client
) : client
;
3410 static int _nfs4_proc_access(struct inode
*inode
, struct nfs_access_entry
*entry
)
3412 struct nfs_server
*server
= NFS_SERVER(inode
);
3413 struct nfs4_accessargs args
= {
3414 .fh
= NFS_FH(inode
),
3415 .bitmask
= server
->cache_consistency_bitmask
,
3417 struct nfs4_accessres res
= {
3420 struct rpc_message msg
= {
3421 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_ACCESS
],
3424 .rpc_cred
= entry
->cred
,
3426 int mode
= entry
->mask
;
3430 * Determine which access bits we want to ask for...
3432 if (mode
& MAY_READ
)
3433 args
.access
|= NFS4_ACCESS_READ
;
3434 if (S_ISDIR(inode
->i_mode
)) {
3435 if (mode
& MAY_WRITE
)
3436 args
.access
|= NFS4_ACCESS_MODIFY
| NFS4_ACCESS_EXTEND
| NFS4_ACCESS_DELETE
;
3437 if (mode
& MAY_EXEC
)
3438 args
.access
|= NFS4_ACCESS_LOOKUP
;
3440 if (mode
& MAY_WRITE
)
3441 args
.access
|= NFS4_ACCESS_MODIFY
| NFS4_ACCESS_EXTEND
;
3442 if (mode
& MAY_EXEC
)
3443 args
.access
|= NFS4_ACCESS_EXECUTE
;
3446 res
.fattr
= nfs_alloc_fattr();
3447 if (res
.fattr
== NULL
)
3450 status
= nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
3452 nfs_access_set_mask(entry
, res
.access
);
3453 nfs_refresh_inode(inode
, res
.fattr
);
3455 nfs_free_fattr(res
.fattr
);
3459 static int nfs4_proc_access(struct inode
*inode
, struct nfs_access_entry
*entry
)
3461 struct nfs4_exception exception
= { };
3464 err
= _nfs4_proc_access(inode
, entry
);
3465 trace_nfs4_access(inode
, err
);
3466 err
= nfs4_handle_exception(NFS_SERVER(inode
), err
,
3468 } while (exception
.retry
);
3473 * TODO: For the time being, we don't try to get any attributes
3474 * along with any of the zero-copy operations READ, READDIR,
3477 * In the case of the first three, we want to put the GETATTR
3478 * after the read-type operation -- this is because it is hard
3479 * to predict the length of a GETATTR response in v4, and thus
3480 * align the READ data correctly. This means that the GETATTR
3481 * may end up partially falling into the page cache, and we should
3482 * shift it into the 'tail' of the xdr_buf before processing.
3483 * To do this efficiently, we need to know the total length
3484 * of data received, which doesn't seem to be available outside
3487 * In the case of WRITE, we also want to put the GETATTR after
3488 * the operation -- in this case because we want to make sure
3489 * we get the post-operation mtime and size.
3491 * Both of these changes to the XDR layer would in fact be quite
3492 * minor, but I decided to leave them for a subsequent patch.
3494 static int _nfs4_proc_readlink(struct inode
*inode
, struct page
*page
,
3495 unsigned int pgbase
, unsigned int pglen
)
3497 struct nfs4_readlink args
= {
3498 .fh
= NFS_FH(inode
),
3503 struct nfs4_readlink_res res
;
3504 struct rpc_message msg
= {
3505 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_READLINK
],
3510 return nfs4_call_sync(NFS_SERVER(inode
)->client
, NFS_SERVER(inode
), &msg
, &args
.seq_args
, &res
.seq_res
, 0);
3513 static int nfs4_proc_readlink(struct inode
*inode
, struct page
*page
,
3514 unsigned int pgbase
, unsigned int pglen
)
3516 struct nfs4_exception exception
= { };
3519 err
= _nfs4_proc_readlink(inode
, page
, pgbase
, pglen
);
3520 trace_nfs4_readlink(inode
, err
);
3521 err
= nfs4_handle_exception(NFS_SERVER(inode
), err
,
3523 } while (exception
.retry
);
3528 * This is just for mknod. open(O_CREAT) will always do ->open_context().
3531 nfs4_proc_create(struct inode
*dir
, struct dentry
*dentry
, struct iattr
*sattr
,
3534 struct nfs4_label l
, *ilabel
= NULL
;
3535 struct nfs_open_context
*ctx
;
3536 struct nfs4_state
*state
;
3540 ctx
= alloc_nfs_open_context(dentry
, FMODE_READ
);
3542 return PTR_ERR(ctx
);
3544 ilabel
= nfs4_label_init_security(dir
, dentry
, sattr
, &l
);
3546 sattr
->ia_mode
&= ~current_umask();
3547 state
= nfs4_do_open(dir
, ctx
, flags
, sattr
, ilabel
, &opened
);
3548 if (IS_ERR(state
)) {
3549 status
= PTR_ERR(state
);
3553 nfs4_label_release_security(ilabel
);
3554 put_nfs_open_context(ctx
);
3558 static int _nfs4_proc_remove(struct inode
*dir
, struct qstr
*name
)
3560 struct nfs_server
*server
= NFS_SERVER(dir
);
3561 struct nfs_removeargs args
= {
3565 struct nfs_removeres res
= {
3568 struct rpc_message msg
= {
3569 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_REMOVE
],
3575 status
= nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 1);
3577 update_changeattr(dir
, &res
.cinfo
);
3581 static int nfs4_proc_remove(struct inode
*dir
, struct qstr
*name
)
3583 struct nfs4_exception exception
= { };
3586 err
= _nfs4_proc_remove(dir
, name
);
3587 trace_nfs4_remove(dir
, name
, err
);
3588 err
= nfs4_handle_exception(NFS_SERVER(dir
), err
,
3590 } while (exception
.retry
);
3594 static void nfs4_proc_unlink_setup(struct rpc_message
*msg
, struct inode
*dir
)
3596 struct nfs_server
*server
= NFS_SERVER(dir
);
3597 struct nfs_removeargs
*args
= msg
->rpc_argp
;
3598 struct nfs_removeres
*res
= msg
->rpc_resp
;
3600 res
->server
= server
;
3601 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_REMOVE
];
3602 nfs4_init_sequence(&args
->seq_args
, &res
->seq_res
, 1);
3604 nfs_fattr_init(res
->dir_attr
);
3607 static void nfs4_proc_unlink_rpc_prepare(struct rpc_task
*task
, struct nfs_unlinkdata
*data
)
3609 nfs4_setup_sequence(NFS_SERVER(data
->dir
),
3610 &data
->args
.seq_args
,
3615 static int nfs4_proc_unlink_done(struct rpc_task
*task
, struct inode
*dir
)
3617 struct nfs_unlinkdata
*data
= task
->tk_calldata
;
3618 struct nfs_removeres
*res
= &data
->res
;
3620 if (!nfs4_sequence_done(task
, &res
->seq_res
))
3622 if (nfs4_async_handle_error(task
, res
->server
, NULL
,
3623 &data
->timeout
) == -EAGAIN
)
3625 update_changeattr(dir
, &res
->cinfo
);
3629 static void nfs4_proc_rename_setup(struct rpc_message
*msg
, struct inode
*dir
)
3631 struct nfs_server
*server
= NFS_SERVER(dir
);
3632 struct nfs_renameargs
*arg
= msg
->rpc_argp
;
3633 struct nfs_renameres
*res
= msg
->rpc_resp
;
3635 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RENAME
];
3636 res
->server
= server
;
3637 nfs4_init_sequence(&arg
->seq_args
, &res
->seq_res
, 1);
3640 static void nfs4_proc_rename_rpc_prepare(struct rpc_task
*task
, struct nfs_renamedata
*data
)
3642 nfs4_setup_sequence(NFS_SERVER(data
->old_dir
),
3643 &data
->args
.seq_args
,
3648 static int nfs4_proc_rename_done(struct rpc_task
*task
, struct inode
*old_dir
,
3649 struct inode
*new_dir
)
3651 struct nfs_renamedata
*data
= task
->tk_calldata
;
3652 struct nfs_renameres
*res
= &data
->res
;
3654 if (!nfs4_sequence_done(task
, &res
->seq_res
))
3656 if (nfs4_async_handle_error(task
, res
->server
, NULL
, &data
->timeout
) == -EAGAIN
)
3659 update_changeattr(old_dir
, &res
->old_cinfo
);
3660 update_changeattr(new_dir
, &res
->new_cinfo
);
3664 static int _nfs4_proc_link(struct inode
*inode
, struct inode
*dir
, struct qstr
*name
)
3666 struct nfs_server
*server
= NFS_SERVER(inode
);
3667 struct nfs4_link_arg arg
= {
3668 .fh
= NFS_FH(inode
),
3669 .dir_fh
= NFS_FH(dir
),
3671 .bitmask
= server
->attr_bitmask
,
3673 struct nfs4_link_res res
= {
3677 struct rpc_message msg
= {
3678 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LINK
],
3682 int status
= -ENOMEM
;
3684 res
.fattr
= nfs_alloc_fattr();
3685 if (res
.fattr
== NULL
)
3688 res
.label
= nfs4_label_alloc(server
, GFP_KERNEL
);
3689 if (IS_ERR(res
.label
)) {
3690 status
= PTR_ERR(res
.label
);
3693 arg
.bitmask
= nfs4_bitmask(server
, res
.label
);
3695 status
= nfs4_call_sync(server
->client
, server
, &msg
, &arg
.seq_args
, &res
.seq_res
, 1);
3697 update_changeattr(dir
, &res
.cinfo
);
3698 status
= nfs_post_op_update_inode(inode
, res
.fattr
);
3700 nfs_setsecurity(inode
, res
.fattr
, res
.label
);
3704 nfs4_label_free(res
.label
);
3707 nfs_free_fattr(res
.fattr
);
3711 static int nfs4_proc_link(struct inode
*inode
, struct inode
*dir
, struct qstr
*name
)
3713 struct nfs4_exception exception
= { };
3716 err
= nfs4_handle_exception(NFS_SERVER(inode
),
3717 _nfs4_proc_link(inode
, dir
, name
),
3719 } while (exception
.retry
);
3723 struct nfs4_createdata
{
3724 struct rpc_message msg
;
3725 struct nfs4_create_arg arg
;
3726 struct nfs4_create_res res
;
3728 struct nfs_fattr fattr
;
3729 struct nfs4_label
*label
;
3732 static struct nfs4_createdata
*nfs4_alloc_createdata(struct inode
*dir
,
3733 struct qstr
*name
, struct iattr
*sattr
, u32 ftype
)
3735 struct nfs4_createdata
*data
;
3737 data
= kzalloc(sizeof(*data
), GFP_KERNEL
);
3739 struct nfs_server
*server
= NFS_SERVER(dir
);
3741 data
->label
= nfs4_label_alloc(server
, GFP_KERNEL
);
3742 if (IS_ERR(data
->label
))
3745 data
->msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_CREATE
];
3746 data
->msg
.rpc_argp
= &data
->arg
;
3747 data
->msg
.rpc_resp
= &data
->res
;
3748 data
->arg
.dir_fh
= NFS_FH(dir
);
3749 data
->arg
.server
= server
;
3750 data
->arg
.name
= name
;
3751 data
->arg
.attrs
= sattr
;
3752 data
->arg
.ftype
= ftype
;
3753 data
->arg
.bitmask
= nfs4_bitmask(server
, data
->label
);
3754 data
->res
.server
= server
;
3755 data
->res
.fh
= &data
->fh
;
3756 data
->res
.fattr
= &data
->fattr
;
3757 data
->res
.label
= data
->label
;
3758 nfs_fattr_init(data
->res
.fattr
);
3766 static int nfs4_do_create(struct inode
*dir
, struct dentry
*dentry
, struct nfs4_createdata
*data
)
3768 int status
= nfs4_call_sync(NFS_SERVER(dir
)->client
, NFS_SERVER(dir
), &data
->msg
,
3769 &data
->arg
.seq_args
, &data
->res
.seq_res
, 1);
3771 update_changeattr(dir
, &data
->res
.dir_cinfo
);
3772 status
= nfs_instantiate(dentry
, data
->res
.fh
, data
->res
.fattr
, data
->res
.label
);
3777 static void nfs4_free_createdata(struct nfs4_createdata
*data
)
3779 nfs4_label_free(data
->label
);
3783 static int _nfs4_proc_symlink(struct inode
*dir
, struct dentry
*dentry
,
3784 struct page
*page
, unsigned int len
, struct iattr
*sattr
,
3785 struct nfs4_label
*label
)
3787 struct nfs4_createdata
*data
;
3788 int status
= -ENAMETOOLONG
;
3790 if (len
> NFS4_MAXPATHLEN
)
3794 data
= nfs4_alloc_createdata(dir
, &dentry
->d_name
, sattr
, NF4LNK
);
3798 data
->msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SYMLINK
];
3799 data
->arg
.u
.symlink
.pages
= &page
;
3800 data
->arg
.u
.symlink
.len
= len
;
3801 data
->arg
.label
= label
;
3803 status
= nfs4_do_create(dir
, dentry
, data
);
3805 nfs4_free_createdata(data
);
3810 static int nfs4_proc_symlink(struct inode
*dir
, struct dentry
*dentry
,
3811 struct page
*page
, unsigned int len
, struct iattr
*sattr
)
3813 struct nfs4_exception exception
= { };
3814 struct nfs4_label l
, *label
= NULL
;
3817 label
= nfs4_label_init_security(dir
, dentry
, sattr
, &l
);
3820 err
= _nfs4_proc_symlink(dir
, dentry
, page
, len
, sattr
, label
);
3821 trace_nfs4_symlink(dir
, &dentry
->d_name
, err
);
3822 err
= nfs4_handle_exception(NFS_SERVER(dir
), err
,
3824 } while (exception
.retry
);
3826 nfs4_label_release_security(label
);
3830 static int _nfs4_proc_mkdir(struct inode
*dir
, struct dentry
*dentry
,
3831 struct iattr
*sattr
, struct nfs4_label
*label
)
3833 struct nfs4_createdata
*data
;
3834 int status
= -ENOMEM
;
3836 data
= nfs4_alloc_createdata(dir
, &dentry
->d_name
, sattr
, NF4DIR
);
3840 data
->arg
.label
= label
;
3841 status
= nfs4_do_create(dir
, dentry
, data
);
3843 nfs4_free_createdata(data
);
3848 static int nfs4_proc_mkdir(struct inode
*dir
, struct dentry
*dentry
,
3849 struct iattr
*sattr
)
3851 struct nfs4_exception exception
= { };
3852 struct nfs4_label l
, *label
= NULL
;
3855 label
= nfs4_label_init_security(dir
, dentry
, sattr
, &l
);
3857 sattr
->ia_mode
&= ~current_umask();
3859 err
= _nfs4_proc_mkdir(dir
, dentry
, sattr
, label
);
3860 trace_nfs4_mkdir(dir
, &dentry
->d_name
, err
);
3861 err
= nfs4_handle_exception(NFS_SERVER(dir
), err
,
3863 } while (exception
.retry
);
3864 nfs4_label_release_security(label
);
3869 static int _nfs4_proc_readdir(struct dentry
*dentry
, struct rpc_cred
*cred
,
3870 u64 cookie
, struct page
**pages
, unsigned int count
, int plus
)
3872 struct inode
*dir
= dentry
->d_inode
;
3873 struct nfs4_readdir_arg args
= {
3878 .bitmask
= NFS_SERVER(dentry
->d_inode
)->attr_bitmask
,
3881 struct nfs4_readdir_res res
;
3882 struct rpc_message msg
= {
3883 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_READDIR
],
3890 dprintk("%s: dentry = %pd2, cookie = %Lu\n", __func__
,
3892 (unsigned long long)cookie
);
3893 nfs4_setup_readdir(cookie
, NFS_I(dir
)->cookieverf
, dentry
, &args
);
3894 res
.pgbase
= args
.pgbase
;
3895 status
= nfs4_call_sync(NFS_SERVER(dir
)->client
, NFS_SERVER(dir
), &msg
, &args
.seq_args
, &res
.seq_res
, 0);
3897 memcpy(NFS_I(dir
)->cookieverf
, res
.verifier
.data
, NFS4_VERIFIER_SIZE
);
3898 status
+= args
.pgbase
;
3901 nfs_invalidate_atime(dir
);
3903 dprintk("%s: returns %d\n", __func__
, status
);
3907 static int nfs4_proc_readdir(struct dentry
*dentry
, struct rpc_cred
*cred
,
3908 u64 cookie
, struct page
**pages
, unsigned int count
, int plus
)
3910 struct nfs4_exception exception
= { };
3913 err
= _nfs4_proc_readdir(dentry
, cred
, cookie
,
3914 pages
, count
, plus
);
3915 trace_nfs4_readdir(dentry
->d_inode
, err
);
3916 err
= nfs4_handle_exception(NFS_SERVER(dentry
->d_inode
), err
,
3918 } while (exception
.retry
);
3922 static int _nfs4_proc_mknod(struct inode
*dir
, struct dentry
*dentry
,
3923 struct iattr
*sattr
, struct nfs4_label
*label
, dev_t rdev
)
3925 struct nfs4_createdata
*data
;
3926 int mode
= sattr
->ia_mode
;
3927 int status
= -ENOMEM
;
3929 data
= nfs4_alloc_createdata(dir
, &dentry
->d_name
, sattr
, NF4SOCK
);
3934 data
->arg
.ftype
= NF4FIFO
;
3935 else if (S_ISBLK(mode
)) {
3936 data
->arg
.ftype
= NF4BLK
;
3937 data
->arg
.u
.device
.specdata1
= MAJOR(rdev
);
3938 data
->arg
.u
.device
.specdata2
= MINOR(rdev
);
3940 else if (S_ISCHR(mode
)) {
3941 data
->arg
.ftype
= NF4CHR
;
3942 data
->arg
.u
.device
.specdata1
= MAJOR(rdev
);
3943 data
->arg
.u
.device
.specdata2
= MINOR(rdev
);
3944 } else if (!S_ISSOCK(mode
)) {
3949 data
->arg
.label
= label
;
3950 status
= nfs4_do_create(dir
, dentry
, data
);
3952 nfs4_free_createdata(data
);
3957 static int nfs4_proc_mknod(struct inode
*dir
, struct dentry
*dentry
,
3958 struct iattr
*sattr
, dev_t rdev
)
3960 struct nfs4_exception exception
= { };
3961 struct nfs4_label l
, *label
= NULL
;
3964 label
= nfs4_label_init_security(dir
, dentry
, sattr
, &l
);
3966 sattr
->ia_mode
&= ~current_umask();
3968 err
= _nfs4_proc_mknod(dir
, dentry
, sattr
, label
, rdev
);
3969 trace_nfs4_mknod(dir
, &dentry
->d_name
, err
);
3970 err
= nfs4_handle_exception(NFS_SERVER(dir
), err
,
3972 } while (exception
.retry
);
3974 nfs4_label_release_security(label
);
3979 static int _nfs4_proc_statfs(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
3980 struct nfs_fsstat
*fsstat
)
3982 struct nfs4_statfs_arg args
= {
3984 .bitmask
= server
->attr_bitmask
,
3986 struct nfs4_statfs_res res
= {
3989 struct rpc_message msg
= {
3990 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_STATFS
],
3995 nfs_fattr_init(fsstat
->fattr
);
3996 return nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
3999 static int nfs4_proc_statfs(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fsstat
*fsstat
)
4001 struct nfs4_exception exception
= { };
4004 err
= nfs4_handle_exception(server
,
4005 _nfs4_proc_statfs(server
, fhandle
, fsstat
),
4007 } while (exception
.retry
);
4011 static int _nfs4_do_fsinfo(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
4012 struct nfs_fsinfo
*fsinfo
)
4014 struct nfs4_fsinfo_arg args
= {
4016 .bitmask
= server
->attr_bitmask
,
4018 struct nfs4_fsinfo_res res
= {
4021 struct rpc_message msg
= {
4022 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_FSINFO
],
4027 return nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
4030 static int nfs4_do_fsinfo(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fsinfo
*fsinfo
)
4032 struct nfs4_exception exception
= { };
4033 unsigned long now
= jiffies
;
4037 err
= _nfs4_do_fsinfo(server
, fhandle
, fsinfo
);
4038 trace_nfs4_fsinfo(server
, fhandle
, fsinfo
->fattr
, err
);
4040 struct nfs_client
*clp
= server
->nfs_client
;
4042 spin_lock(&clp
->cl_lock
);
4043 clp
->cl_lease_time
= fsinfo
->lease_time
* HZ
;
4044 clp
->cl_last_renewal
= now
;
4045 spin_unlock(&clp
->cl_lock
);
4048 err
= nfs4_handle_exception(server
, err
, &exception
);
4049 } while (exception
.retry
);
4053 static int nfs4_proc_fsinfo(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fsinfo
*fsinfo
)
4057 nfs_fattr_init(fsinfo
->fattr
);
4058 error
= nfs4_do_fsinfo(server
, fhandle
, fsinfo
);
4060 /* block layout checks this! */
4061 server
->pnfs_blksize
= fsinfo
->blksize
;
4062 set_pnfs_layoutdriver(server
, fhandle
, fsinfo
->layouttype
);
4068 static int _nfs4_proc_pathconf(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
4069 struct nfs_pathconf
*pathconf
)
4071 struct nfs4_pathconf_arg args
= {
4073 .bitmask
= server
->attr_bitmask
,
4075 struct nfs4_pathconf_res res
= {
4076 .pathconf
= pathconf
,
4078 struct rpc_message msg
= {
4079 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_PATHCONF
],
4084 /* None of the pathconf attributes are mandatory to implement */
4085 if ((args
.bitmask
[0] & nfs4_pathconf_bitmap
[0]) == 0) {
4086 memset(pathconf
, 0, sizeof(*pathconf
));
4090 nfs_fattr_init(pathconf
->fattr
);
4091 return nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
4094 static int nfs4_proc_pathconf(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
4095 struct nfs_pathconf
*pathconf
)
4097 struct nfs4_exception exception
= { };
4101 err
= nfs4_handle_exception(server
,
4102 _nfs4_proc_pathconf(server
, fhandle
, pathconf
),
4104 } while (exception
.retry
);
4108 int nfs4_set_rw_stateid(nfs4_stateid
*stateid
,
4109 const struct nfs_open_context
*ctx
,
4110 const struct nfs_lock_context
*l_ctx
,
4113 const struct nfs_lockowner
*lockowner
= NULL
;
4116 lockowner
= &l_ctx
->lockowner
;
4117 return nfs4_select_rw_stateid(stateid
, ctx
->state
, fmode
, lockowner
);
4119 EXPORT_SYMBOL_GPL(nfs4_set_rw_stateid
);
4121 static bool nfs4_stateid_is_current(nfs4_stateid
*stateid
,
4122 const struct nfs_open_context
*ctx
,
4123 const struct nfs_lock_context
*l_ctx
,
4126 nfs4_stateid current_stateid
;
4128 /* If the current stateid represents a lost lock, then exit */
4129 if (nfs4_set_rw_stateid(¤t_stateid
, ctx
, l_ctx
, fmode
) == -EIO
)
4131 return nfs4_stateid_match(stateid
, ¤t_stateid
);
4134 static bool nfs4_error_stateid_expired(int err
)
4137 case -NFS4ERR_DELEG_REVOKED
:
4138 case -NFS4ERR_ADMIN_REVOKED
:
4139 case -NFS4ERR_BAD_STATEID
:
4140 case -NFS4ERR_STALE_STATEID
:
4141 case -NFS4ERR_OLD_STATEID
:
4142 case -NFS4ERR_OPENMODE
:
4143 case -NFS4ERR_EXPIRED
:
4149 void __nfs4_read_done_cb(struct nfs_pgio_header
*hdr
)
4151 nfs_invalidate_atime(hdr
->inode
);
4154 static int nfs4_read_done_cb(struct rpc_task
*task
, struct nfs_pgio_header
*hdr
)
4156 struct nfs_server
*server
= NFS_SERVER(hdr
->inode
);
4158 trace_nfs4_read(hdr
, task
->tk_status
);
4159 if (nfs4_async_handle_error(task
, server
,
4160 hdr
->args
.context
->state
,
4162 rpc_restart_call_prepare(task
);
4166 __nfs4_read_done_cb(hdr
);
4167 if (task
->tk_status
> 0)
4168 renew_lease(server
, hdr
->timestamp
);
4172 static bool nfs4_read_stateid_changed(struct rpc_task
*task
,
4173 struct nfs_pgio_args
*args
)
4176 if (!nfs4_error_stateid_expired(task
->tk_status
) ||
4177 nfs4_stateid_is_current(&args
->stateid
,
4182 rpc_restart_call_prepare(task
);
4186 static int nfs4_read_done(struct rpc_task
*task
, struct nfs_pgio_header
*hdr
)
4189 dprintk("--> %s\n", __func__
);
4191 if (!nfs4_sequence_done(task
, &hdr
->res
.seq_res
))
4193 if (nfs4_read_stateid_changed(task
, &hdr
->args
))
4195 return hdr
->pgio_done_cb
? hdr
->pgio_done_cb(task
, hdr
) :
4196 nfs4_read_done_cb(task
, hdr
);
4199 static void nfs4_proc_read_setup(struct nfs_pgio_header
*hdr
,
4200 struct rpc_message
*msg
)
4202 hdr
->timestamp
= jiffies
;
4203 hdr
->pgio_done_cb
= nfs4_read_done_cb
;
4204 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_READ
];
4205 nfs4_init_sequence(&hdr
->args
.seq_args
, &hdr
->res
.seq_res
, 0);
4208 static int nfs4_proc_pgio_rpc_prepare(struct rpc_task
*task
,
4209 struct nfs_pgio_header
*hdr
)
4211 if (nfs4_setup_sequence(NFS_SERVER(hdr
->inode
),
4212 &hdr
->args
.seq_args
,
4216 if (nfs4_set_rw_stateid(&hdr
->args
.stateid
, hdr
->args
.context
,
4217 hdr
->args
.lock_context
,
4218 hdr
->rw_ops
->rw_mode
) == -EIO
)
4220 if (unlikely(test_bit(NFS_CONTEXT_BAD
, &hdr
->args
.context
->flags
)))
4225 static int nfs4_write_done_cb(struct rpc_task
*task
,
4226 struct nfs_pgio_header
*hdr
)
4228 struct inode
*inode
= hdr
->inode
;
4230 trace_nfs4_write(hdr
, task
->tk_status
);
4231 if (nfs4_async_handle_error(task
, NFS_SERVER(inode
),
4232 hdr
->args
.context
->state
,
4234 rpc_restart_call_prepare(task
);
4237 if (task
->tk_status
>= 0) {
4238 renew_lease(NFS_SERVER(inode
), hdr
->timestamp
);
4239 nfs_post_op_update_inode_force_wcc(inode
, &hdr
->fattr
);
4244 static bool nfs4_write_stateid_changed(struct rpc_task
*task
,
4245 struct nfs_pgio_args
*args
)
4248 if (!nfs4_error_stateid_expired(task
->tk_status
) ||
4249 nfs4_stateid_is_current(&args
->stateid
,
4254 rpc_restart_call_prepare(task
);
4258 static int nfs4_write_done(struct rpc_task
*task
, struct nfs_pgio_header
*hdr
)
4260 if (!nfs4_sequence_done(task
, &hdr
->res
.seq_res
))
4262 if (nfs4_write_stateid_changed(task
, &hdr
->args
))
4264 return hdr
->pgio_done_cb
? hdr
->pgio_done_cb(task
, hdr
) :
4265 nfs4_write_done_cb(task
, hdr
);
4269 bool nfs4_write_need_cache_consistency_data(struct nfs_pgio_header
*hdr
)
4271 /* Don't request attributes for pNFS or O_DIRECT writes */
4272 if (hdr
->ds_clp
!= NULL
|| hdr
->dreq
!= NULL
)
4274 /* Otherwise, request attributes if and only if we don't hold
4277 return nfs4_have_delegation(hdr
->inode
, FMODE_READ
) == 0;
4280 static void nfs4_proc_write_setup(struct nfs_pgio_header
*hdr
,
4281 struct rpc_message
*msg
)
4283 struct nfs_server
*server
= NFS_SERVER(hdr
->inode
);
4285 if (!nfs4_write_need_cache_consistency_data(hdr
)) {
4286 hdr
->args
.bitmask
= NULL
;
4287 hdr
->res
.fattr
= NULL
;
4289 hdr
->args
.bitmask
= server
->cache_consistency_bitmask
;
4291 if (!hdr
->pgio_done_cb
)
4292 hdr
->pgio_done_cb
= nfs4_write_done_cb
;
4293 hdr
->res
.server
= server
;
4294 hdr
->timestamp
= jiffies
;
4296 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_WRITE
];
4297 nfs4_init_sequence(&hdr
->args
.seq_args
, &hdr
->res
.seq_res
, 1);
4300 static void nfs4_proc_commit_rpc_prepare(struct rpc_task
*task
, struct nfs_commit_data
*data
)
4302 nfs4_setup_sequence(NFS_SERVER(data
->inode
),
4303 &data
->args
.seq_args
,
4308 static int nfs4_commit_done_cb(struct rpc_task
*task
, struct nfs_commit_data
*data
)
4310 struct inode
*inode
= data
->inode
;
4312 trace_nfs4_commit(data
, task
->tk_status
);
4313 if (nfs4_async_handle_error(task
, NFS_SERVER(inode
),
4314 NULL
, NULL
) == -EAGAIN
) {
4315 rpc_restart_call_prepare(task
);
4321 static int nfs4_commit_done(struct rpc_task
*task
, struct nfs_commit_data
*data
)
4323 if (!nfs4_sequence_done(task
, &data
->res
.seq_res
))
4325 return data
->commit_done_cb(task
, data
);
4328 static void nfs4_proc_commit_setup(struct nfs_commit_data
*data
, struct rpc_message
*msg
)
4330 struct nfs_server
*server
= NFS_SERVER(data
->inode
);
4332 if (data
->commit_done_cb
== NULL
)
4333 data
->commit_done_cb
= nfs4_commit_done_cb
;
4334 data
->res
.server
= server
;
4335 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_COMMIT
];
4336 nfs4_init_sequence(&data
->args
.seq_args
, &data
->res
.seq_res
, 1);
4339 struct nfs4_renewdata
{
4340 struct nfs_client
*client
;
4341 unsigned long timestamp
;
4345 * nfs4_proc_async_renew(): This is not one of the nfs_rpc_ops; it is a special
4346 * standalone procedure for queueing an asynchronous RENEW.
4348 static void nfs4_renew_release(void *calldata
)
4350 struct nfs4_renewdata
*data
= calldata
;
4351 struct nfs_client
*clp
= data
->client
;
4353 if (atomic_read(&clp
->cl_count
) > 1)
4354 nfs4_schedule_state_renewal(clp
);
4355 nfs_put_client(clp
);
4359 static void nfs4_renew_done(struct rpc_task
*task
, void *calldata
)
4361 struct nfs4_renewdata
*data
= calldata
;
4362 struct nfs_client
*clp
= data
->client
;
4363 unsigned long timestamp
= data
->timestamp
;
4365 trace_nfs4_renew_async(clp
, task
->tk_status
);
4366 switch (task
->tk_status
) {
4369 case -NFS4ERR_LEASE_MOVED
:
4370 nfs4_schedule_lease_moved_recovery(clp
);
4373 /* Unless we're shutting down, schedule state recovery! */
4374 if (test_bit(NFS_CS_RENEWD
, &clp
->cl_res_state
) == 0)
4376 if (task
->tk_status
!= NFS4ERR_CB_PATH_DOWN
) {
4377 nfs4_schedule_lease_recovery(clp
);
4380 nfs4_schedule_path_down_recovery(clp
);
4382 do_renew_lease(clp
, timestamp
);
4385 static const struct rpc_call_ops nfs4_renew_ops
= {
4386 .rpc_call_done
= nfs4_renew_done
,
4387 .rpc_release
= nfs4_renew_release
,
4390 static int nfs4_proc_async_renew(struct nfs_client
*clp
, struct rpc_cred
*cred
, unsigned renew_flags
)
4392 struct rpc_message msg
= {
4393 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RENEW
],
4397 struct nfs4_renewdata
*data
;
4399 if (renew_flags
== 0)
4401 if (!atomic_inc_not_zero(&clp
->cl_count
))
4403 data
= kmalloc(sizeof(*data
), GFP_NOFS
);
4407 data
->timestamp
= jiffies
;
4408 return rpc_call_async(clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
,
4409 &nfs4_renew_ops
, data
);
4412 static int nfs4_proc_renew(struct nfs_client
*clp
, struct rpc_cred
*cred
)
4414 struct rpc_message msg
= {
4415 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RENEW
],
4419 unsigned long now
= jiffies
;
4422 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
4425 do_renew_lease(clp
, now
);
4429 static inline int nfs4_server_supports_acls(struct nfs_server
*server
)
4431 return server
->caps
& NFS_CAP_ACLS
;
4434 /* Assuming that XATTR_SIZE_MAX is a multiple of PAGE_SIZE, and that
4435 * it's OK to put sizeof(void) * (XATTR_SIZE_MAX/PAGE_SIZE) bytes on
4438 #define NFS4ACL_MAXPAGES DIV_ROUND_UP(XATTR_SIZE_MAX, PAGE_SIZE)
4440 static int buf_to_pages_noslab(const void *buf
, size_t buflen
,
4441 struct page
**pages
, unsigned int *pgbase
)
4443 struct page
*newpage
, **spages
;
4449 len
= min_t(size_t, PAGE_SIZE
, buflen
);
4450 newpage
= alloc_page(GFP_KERNEL
);
4452 if (newpage
== NULL
)
4454 memcpy(page_address(newpage
), buf
, len
);
4459 } while (buflen
!= 0);
4465 __free_page(spages
[rc
-1]);
4469 struct nfs4_cached_acl
{
4475 static void nfs4_set_cached_acl(struct inode
*inode
, struct nfs4_cached_acl
*acl
)
4477 struct nfs_inode
*nfsi
= NFS_I(inode
);
4479 spin_lock(&inode
->i_lock
);
4480 kfree(nfsi
->nfs4_acl
);
4481 nfsi
->nfs4_acl
= acl
;
4482 spin_unlock(&inode
->i_lock
);
4485 static void nfs4_zap_acl_attr(struct inode
*inode
)
4487 nfs4_set_cached_acl(inode
, NULL
);
4490 static inline ssize_t
nfs4_read_cached_acl(struct inode
*inode
, char *buf
, size_t buflen
)
4492 struct nfs_inode
*nfsi
= NFS_I(inode
);
4493 struct nfs4_cached_acl
*acl
;
4496 spin_lock(&inode
->i_lock
);
4497 acl
= nfsi
->nfs4_acl
;
4500 if (buf
== NULL
) /* user is just asking for length */
4502 if (acl
->cached
== 0)
4504 ret
= -ERANGE
; /* see getxattr(2) man page */
4505 if (acl
->len
> buflen
)
4507 memcpy(buf
, acl
->data
, acl
->len
);
4511 spin_unlock(&inode
->i_lock
);
4515 static void nfs4_write_cached_acl(struct inode
*inode
, struct page
**pages
, size_t pgbase
, size_t acl_len
)
4517 struct nfs4_cached_acl
*acl
;
4518 size_t buflen
= sizeof(*acl
) + acl_len
;
4520 if (buflen
<= PAGE_SIZE
) {
4521 acl
= kmalloc(buflen
, GFP_KERNEL
);
4525 _copy_from_pages(acl
->data
, pages
, pgbase
, acl_len
);
4527 acl
= kmalloc(sizeof(*acl
), GFP_KERNEL
);
4534 nfs4_set_cached_acl(inode
, acl
);
4538 * The getxattr API returns the required buffer length when called with a
4539 * NULL buf. The NFSv4 acl tool then calls getxattr again after allocating
4540 * the required buf. On a NULL buf, we send a page of data to the server
4541 * guessing that the ACL request can be serviced by a page. If so, we cache
4542 * up to the page of ACL data, and the 2nd call to getxattr is serviced by
4543 * the cache. If not so, we throw away the page, and cache the required
4544 * length. The next getxattr call will then produce another round trip to
4545 * the server, this time with the input buf of the required size.
4547 static ssize_t
__nfs4_get_acl_uncached(struct inode
*inode
, void *buf
, size_t buflen
)
4549 struct page
*pages
[NFS4ACL_MAXPAGES
] = {NULL
, };
4550 struct nfs_getaclargs args
= {
4551 .fh
= NFS_FH(inode
),
4555 struct nfs_getaclres res
= {
4558 struct rpc_message msg
= {
4559 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GETACL
],
4563 unsigned int npages
= DIV_ROUND_UP(buflen
, PAGE_SIZE
);
4564 int ret
= -ENOMEM
, i
;
4566 /* As long as we're doing a round trip to the server anyway,
4567 * let's be prepared for a page of acl data. */
4570 if (npages
> ARRAY_SIZE(pages
))
4573 for (i
= 0; i
< npages
; i
++) {
4574 pages
[i
] = alloc_page(GFP_KERNEL
);
4579 /* for decoding across pages */
4580 res
.acl_scratch
= alloc_page(GFP_KERNEL
);
4581 if (!res
.acl_scratch
)
4584 args
.acl_len
= npages
* PAGE_SIZE
;
4585 args
.acl_pgbase
= 0;
4587 dprintk("%s buf %p buflen %zu npages %d args.acl_len %zu\n",
4588 __func__
, buf
, buflen
, npages
, args
.acl_len
);
4589 ret
= nfs4_call_sync(NFS_SERVER(inode
)->client
, NFS_SERVER(inode
),
4590 &msg
, &args
.seq_args
, &res
.seq_res
, 0);
4594 /* Handle the case where the passed-in buffer is too short */
4595 if (res
.acl_flags
& NFS4_ACL_TRUNC
) {
4596 /* Did the user only issue a request for the acl length? */
4602 nfs4_write_cached_acl(inode
, pages
, res
.acl_data_offset
, res
.acl_len
);
4604 if (res
.acl_len
> buflen
) {
4608 _copy_from_pages(buf
, pages
, res
.acl_data_offset
, res
.acl_len
);
4613 for (i
= 0; i
< npages
; i
++)
4615 __free_page(pages
[i
]);
4616 if (res
.acl_scratch
)
4617 __free_page(res
.acl_scratch
);
4621 static ssize_t
nfs4_get_acl_uncached(struct inode
*inode
, void *buf
, size_t buflen
)
4623 struct nfs4_exception exception
= { };
4626 ret
= __nfs4_get_acl_uncached(inode
, buf
, buflen
);
4627 trace_nfs4_get_acl(inode
, ret
);
4630 ret
= nfs4_handle_exception(NFS_SERVER(inode
), ret
, &exception
);
4631 } while (exception
.retry
);
4635 static ssize_t
nfs4_proc_get_acl(struct inode
*inode
, void *buf
, size_t buflen
)
4637 struct nfs_server
*server
= NFS_SERVER(inode
);
4640 if (!nfs4_server_supports_acls(server
))
4642 ret
= nfs_revalidate_inode(server
, inode
);
4645 if (NFS_I(inode
)->cache_validity
& NFS_INO_INVALID_ACL
)
4646 nfs_zap_acl_cache(inode
);
4647 ret
= nfs4_read_cached_acl(inode
, buf
, buflen
);
4649 /* -ENOENT is returned if there is no ACL or if there is an ACL
4650 * but no cached acl data, just the acl length */
4652 return nfs4_get_acl_uncached(inode
, buf
, buflen
);
4655 static int __nfs4_proc_set_acl(struct inode
*inode
, const void *buf
, size_t buflen
)
4657 struct nfs_server
*server
= NFS_SERVER(inode
);
4658 struct page
*pages
[NFS4ACL_MAXPAGES
];
4659 struct nfs_setaclargs arg
= {
4660 .fh
= NFS_FH(inode
),
4664 struct nfs_setaclres res
;
4665 struct rpc_message msg
= {
4666 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETACL
],
4670 unsigned int npages
= DIV_ROUND_UP(buflen
, PAGE_SIZE
);
4673 if (!nfs4_server_supports_acls(server
))
4675 if (npages
> ARRAY_SIZE(pages
))
4677 i
= buf_to_pages_noslab(buf
, buflen
, arg
.acl_pages
, &arg
.acl_pgbase
);
4680 nfs4_inode_return_delegation(inode
);
4681 ret
= nfs4_call_sync(server
->client
, server
, &msg
, &arg
.seq_args
, &res
.seq_res
, 1);
4684 * Free each page after tx, so the only ref left is
4685 * held by the network stack
4688 put_page(pages
[i
-1]);
4691 * Acl update can result in inode attribute update.
4692 * so mark the attribute cache invalid.
4694 spin_lock(&inode
->i_lock
);
4695 NFS_I(inode
)->cache_validity
|= NFS_INO_INVALID_ATTR
;
4696 spin_unlock(&inode
->i_lock
);
4697 nfs_access_zap_cache(inode
);
4698 nfs_zap_acl_cache(inode
);
4702 static int nfs4_proc_set_acl(struct inode
*inode
, const void *buf
, size_t buflen
)
4704 struct nfs4_exception exception
= { };
4707 err
= __nfs4_proc_set_acl(inode
, buf
, buflen
);
4708 trace_nfs4_set_acl(inode
, err
);
4709 err
= nfs4_handle_exception(NFS_SERVER(inode
), err
,
4711 } while (exception
.retry
);
4715 #ifdef CONFIG_NFS_V4_SECURITY_LABEL
4716 static int _nfs4_get_security_label(struct inode
*inode
, void *buf
,
4719 struct nfs_server
*server
= NFS_SERVER(inode
);
4720 struct nfs_fattr fattr
;
4721 struct nfs4_label label
= {0, 0, buflen
, buf
};
4723 u32 bitmask
[3] = { 0, 0, FATTR4_WORD2_SECURITY_LABEL
};
4724 struct nfs4_getattr_arg arg
= {
4725 .fh
= NFS_FH(inode
),
4728 struct nfs4_getattr_res res
= {
4733 struct rpc_message msg
= {
4734 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GETATTR
],
4740 nfs_fattr_init(&fattr
);
4742 ret
= nfs4_call_sync(server
->client
, server
, &msg
, &arg
.seq_args
, &res
.seq_res
, 0);
4745 if (!(fattr
.valid
& NFS_ATTR_FATTR_V4_SECURITY_LABEL
))
4747 if (buflen
< label
.len
)
4752 static int nfs4_get_security_label(struct inode
*inode
, void *buf
,
4755 struct nfs4_exception exception
= { };
4758 if (!nfs_server_capable(inode
, NFS_CAP_SECURITY_LABEL
))
4762 err
= _nfs4_get_security_label(inode
, buf
, buflen
);
4763 trace_nfs4_get_security_label(inode
, err
);
4764 err
= nfs4_handle_exception(NFS_SERVER(inode
), err
,
4766 } while (exception
.retry
);
4770 static int _nfs4_do_set_security_label(struct inode
*inode
,
4771 struct nfs4_label
*ilabel
,
4772 struct nfs_fattr
*fattr
,
4773 struct nfs4_label
*olabel
)
4776 struct iattr sattr
= {0};
4777 struct nfs_server
*server
= NFS_SERVER(inode
);
4778 const u32 bitmask
[3] = { 0, 0, FATTR4_WORD2_SECURITY_LABEL
};
4779 struct nfs_setattrargs arg
= {
4780 .fh
= NFS_FH(inode
),
4786 struct nfs_setattrres res
= {
4791 struct rpc_message msg
= {
4792 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETATTR
],
4798 nfs4_stateid_copy(&arg
.stateid
, &zero_stateid
);
4800 status
= nfs4_call_sync(server
->client
, server
, &msg
, &arg
.seq_args
, &res
.seq_res
, 1);
4802 dprintk("%s failed: %d\n", __func__
, status
);
4807 static int nfs4_do_set_security_label(struct inode
*inode
,
4808 struct nfs4_label
*ilabel
,
4809 struct nfs_fattr
*fattr
,
4810 struct nfs4_label
*olabel
)
4812 struct nfs4_exception exception
= { };
4816 err
= _nfs4_do_set_security_label(inode
, ilabel
,
4818 trace_nfs4_set_security_label(inode
, err
);
4819 err
= nfs4_handle_exception(NFS_SERVER(inode
), err
,
4821 } while (exception
.retry
);
4826 nfs4_set_security_label(struct dentry
*dentry
, const void *buf
, size_t buflen
)
4828 struct nfs4_label ilabel
, *olabel
= NULL
;
4829 struct nfs_fattr fattr
;
4830 struct rpc_cred
*cred
;
4831 struct inode
*inode
= dentry
->d_inode
;
4834 if (!nfs_server_capable(inode
, NFS_CAP_SECURITY_LABEL
))
4837 nfs_fattr_init(&fattr
);
4841 ilabel
.label
= (char *)buf
;
4842 ilabel
.len
= buflen
;
4844 cred
= rpc_lookup_cred();
4846 return PTR_ERR(cred
);
4848 olabel
= nfs4_label_alloc(NFS_SERVER(inode
), GFP_KERNEL
);
4849 if (IS_ERR(olabel
)) {
4850 status
= -PTR_ERR(olabel
);
4854 status
= nfs4_do_set_security_label(inode
, &ilabel
, &fattr
, olabel
);
4856 nfs_setsecurity(inode
, &fattr
, olabel
);
4858 nfs4_label_free(olabel
);
4863 #endif /* CONFIG_NFS_V4_SECURITY_LABEL */
4867 nfs4_async_handle_error(struct rpc_task
*task
, const struct nfs_server
*server
,
4868 struct nfs4_state
*state
, long *timeout
)
4870 struct nfs_client
*clp
= server
->nfs_client
;
4872 if (task
->tk_status
>= 0)
4874 switch(task
->tk_status
) {
4875 case -NFS4ERR_DELEG_REVOKED
:
4876 case -NFS4ERR_ADMIN_REVOKED
:
4877 case -NFS4ERR_BAD_STATEID
:
4878 case -NFS4ERR_OPENMODE
:
4881 if (nfs4_schedule_stateid_recovery(server
, state
) < 0)
4882 goto recovery_failed
;
4883 goto wait_on_recovery
;
4884 case -NFS4ERR_EXPIRED
:
4885 if (state
!= NULL
) {
4886 if (nfs4_schedule_stateid_recovery(server
, state
) < 0)
4887 goto recovery_failed
;
4889 case -NFS4ERR_STALE_STATEID
:
4890 case -NFS4ERR_STALE_CLIENTID
:
4891 nfs4_schedule_lease_recovery(clp
);
4892 goto wait_on_recovery
;
4893 case -NFS4ERR_MOVED
:
4894 if (nfs4_schedule_migration_recovery(server
) < 0)
4895 goto recovery_failed
;
4896 goto wait_on_recovery
;
4897 case -NFS4ERR_LEASE_MOVED
:
4898 nfs4_schedule_lease_moved_recovery(clp
);
4899 goto wait_on_recovery
;
4900 #if defined(CONFIG_NFS_V4_1)
4901 case -NFS4ERR_BADSESSION
:
4902 case -NFS4ERR_BADSLOT
:
4903 case -NFS4ERR_BAD_HIGH_SLOT
:
4904 case -NFS4ERR_DEADSESSION
:
4905 case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION
:
4906 case -NFS4ERR_SEQ_FALSE_RETRY
:
4907 case -NFS4ERR_SEQ_MISORDERED
:
4908 dprintk("%s ERROR %d, Reset session\n", __func__
,
4910 nfs4_schedule_session_recovery(clp
->cl_session
, task
->tk_status
);
4911 goto wait_on_recovery
;
4912 #endif /* CONFIG_NFS_V4_1 */
4913 case -NFS4ERR_DELAY
:
4914 nfs_inc_server_stats(server
, NFSIOS_DELAY
);
4915 rpc_delay(task
, nfs4_update_delay(timeout
));
4917 case -NFS4ERR_GRACE
:
4918 rpc_delay(task
, NFS4_POLL_RETRY_MAX
);
4919 case -NFS4ERR_RETRY_UNCACHED_REP
:
4920 case -NFS4ERR_OLD_STATEID
:
4923 task
->tk_status
= nfs4_map_errors(task
->tk_status
);
4926 task
->tk_status
= -EIO
;
4929 rpc_sleep_on(&clp
->cl_rpcwaitq
, task
, NULL
);
4930 if (test_bit(NFS4CLNT_MANAGER_RUNNING
, &clp
->cl_state
) == 0)
4931 rpc_wake_up_queued_task(&clp
->cl_rpcwaitq
, task
);
4932 if (test_bit(NFS_MIG_FAILED
, &server
->mig_status
))
4933 goto recovery_failed
;
4935 task
->tk_status
= 0;
4939 static void nfs4_init_boot_verifier(const struct nfs_client
*clp
,
4940 nfs4_verifier
*bootverf
)
4944 if (test_bit(NFS4CLNT_PURGE_STATE
, &clp
->cl_state
)) {
4945 /* An impossible timestamp guarantees this value
4946 * will never match a generated boot time. */
4948 verf
[1] = cpu_to_be32(NSEC_PER_SEC
+ 1);
4950 struct nfs_net
*nn
= net_generic(clp
->cl_net
, nfs_net_id
);
4951 verf
[0] = cpu_to_be32(nn
->boot_time
.tv_sec
);
4952 verf
[1] = cpu_to_be32(nn
->boot_time
.tv_nsec
);
4954 memcpy(bootverf
->data
, verf
, sizeof(bootverf
->data
));
4958 nfs4_init_nonuniform_client_string(struct nfs_client
*clp
,
4959 char *buf
, size_t len
)
4961 unsigned int result
;
4963 if (clp
->cl_owner_id
!= NULL
)
4964 return strlcpy(buf
, clp
->cl_owner_id
, len
);
4967 result
= scnprintf(buf
, len
, "Linux NFSv4.0 %s/%s %s",
4969 rpc_peeraddr2str(clp
->cl_rpcclient
,
4971 rpc_peeraddr2str(clp
->cl_rpcclient
,
4972 RPC_DISPLAY_PROTO
));
4974 clp
->cl_owner_id
= kstrdup(buf
, GFP_KERNEL
);
4979 nfs4_init_uniform_client_string(struct nfs_client
*clp
,
4980 char *buf
, size_t len
)
4982 const char *nodename
= clp
->cl_rpcclient
->cl_nodename
;
4983 unsigned int result
;
4985 if (clp
->cl_owner_id
!= NULL
)
4986 return strlcpy(buf
, clp
->cl_owner_id
, len
);
4988 if (nfs4_client_id_uniquifier
[0] != '\0')
4989 result
= scnprintf(buf
, len
, "Linux NFSv%u.%u %s/%s",
4990 clp
->rpc_ops
->version
,
4991 clp
->cl_minorversion
,
4992 nfs4_client_id_uniquifier
,
4995 result
= scnprintf(buf
, len
, "Linux NFSv%u.%u %s",
4996 clp
->rpc_ops
->version
, clp
->cl_minorversion
,
4998 clp
->cl_owner_id
= kstrdup(buf
, GFP_KERNEL
);
5003 * nfs4_callback_up_net() starts only "tcp" and "tcp6" callback
5004 * services. Advertise one based on the address family of the
5008 nfs4_init_callback_netid(const struct nfs_client
*clp
, char *buf
, size_t len
)
5010 if (strchr(clp
->cl_ipaddr
, ':') != NULL
)
5011 return scnprintf(buf
, len
, "tcp6");
5013 return scnprintf(buf
, len
, "tcp");
5016 static void nfs4_setclientid_done(struct rpc_task
*task
, void *calldata
)
5018 struct nfs4_setclientid
*sc
= calldata
;
5020 if (task
->tk_status
== 0)
5021 sc
->sc_cred
= get_rpccred(task
->tk_rqstp
->rq_cred
);
5024 static const struct rpc_call_ops nfs4_setclientid_ops
= {
5025 .rpc_call_done
= nfs4_setclientid_done
,
5029 * nfs4_proc_setclientid - Negotiate client ID
5030 * @clp: state data structure
5031 * @program: RPC program for NFSv4 callback service
5032 * @port: IP port number for NFS4 callback service
5033 * @cred: RPC credential to use for this call
5034 * @res: where to place the result
5036 * Returns zero, a negative errno, or a negative NFS4ERR status code.
5038 int nfs4_proc_setclientid(struct nfs_client
*clp
, u32 program
,
5039 unsigned short port
, struct rpc_cred
*cred
,
5040 struct nfs4_setclientid_res
*res
)
5042 nfs4_verifier sc_verifier
;
5043 struct nfs4_setclientid setclientid
= {
5044 .sc_verifier
= &sc_verifier
,
5046 .sc_cb_ident
= clp
->cl_cb_ident
,
5048 struct rpc_message msg
= {
5049 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETCLIENTID
],
5050 .rpc_argp
= &setclientid
,
5054 struct rpc_task
*task
;
5055 struct rpc_task_setup task_setup_data
= {
5056 .rpc_client
= clp
->cl_rpcclient
,
5057 .rpc_message
= &msg
,
5058 .callback_ops
= &nfs4_setclientid_ops
,
5059 .callback_data
= &setclientid
,
5060 .flags
= RPC_TASK_TIMEOUT
,
5064 /* nfs_client_id4 */
5065 nfs4_init_boot_verifier(clp
, &sc_verifier
);
5066 if (test_bit(NFS_CS_MIGRATION
, &clp
->cl_flags
))
5067 setclientid
.sc_name_len
=
5068 nfs4_init_uniform_client_string(clp
,
5069 setclientid
.sc_name
,
5070 sizeof(setclientid
.sc_name
));
5072 setclientid
.sc_name_len
=
5073 nfs4_init_nonuniform_client_string(clp
,
5074 setclientid
.sc_name
,
5075 sizeof(setclientid
.sc_name
));
5077 setclientid
.sc_netid_len
=
5078 nfs4_init_callback_netid(clp
,
5079 setclientid
.sc_netid
,
5080 sizeof(setclientid
.sc_netid
));
5081 setclientid
.sc_uaddr_len
= scnprintf(setclientid
.sc_uaddr
,
5082 sizeof(setclientid
.sc_uaddr
), "%s.%u.%u",
5083 clp
->cl_ipaddr
, port
>> 8, port
& 255);
5085 dprintk("NFS call setclientid auth=%s, '%.*s'\n",
5086 clp
->cl_rpcclient
->cl_auth
->au_ops
->au_name
,
5087 setclientid
.sc_name_len
, setclientid
.sc_name
);
5088 task
= rpc_run_task(&task_setup_data
);
5090 status
= PTR_ERR(task
);
5093 status
= task
->tk_status
;
5094 if (setclientid
.sc_cred
) {
5095 clp
->cl_acceptor
= rpcauth_stringify_acceptor(setclientid
.sc_cred
);
5096 put_rpccred(setclientid
.sc_cred
);
5100 trace_nfs4_setclientid(clp
, status
);
5101 dprintk("NFS reply setclientid: %d\n", status
);
5106 * nfs4_proc_setclientid_confirm - Confirm client ID
5107 * @clp: state data structure
5108 * @res: result of a previous SETCLIENTID
5109 * @cred: RPC credential to use for this call
5111 * Returns zero, a negative errno, or a negative NFS4ERR status code.
5113 int nfs4_proc_setclientid_confirm(struct nfs_client
*clp
,
5114 struct nfs4_setclientid_res
*arg
,
5115 struct rpc_cred
*cred
)
5117 struct rpc_message msg
= {
5118 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETCLIENTID_CONFIRM
],
5124 dprintk("NFS call setclientid_confirm auth=%s, (client ID %llx)\n",
5125 clp
->cl_rpcclient
->cl_auth
->au_ops
->au_name
,
5127 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
5128 trace_nfs4_setclientid_confirm(clp
, status
);
5129 dprintk("NFS reply setclientid_confirm: %d\n", status
);
5133 struct nfs4_delegreturndata
{
5134 struct nfs4_delegreturnargs args
;
5135 struct nfs4_delegreturnres res
;
5137 nfs4_stateid stateid
;
5138 unsigned long timestamp
;
5139 struct nfs_fattr fattr
;
5141 struct inode
*inode
;
5146 static void nfs4_delegreturn_done(struct rpc_task
*task
, void *calldata
)
5148 struct nfs4_delegreturndata
*data
= calldata
;
5150 if (!nfs4_sequence_done(task
, &data
->res
.seq_res
))
5153 trace_nfs4_delegreturn_exit(&data
->args
, &data
->res
, task
->tk_status
);
5154 switch (task
->tk_status
) {
5156 renew_lease(data
->res
.server
, data
->timestamp
);
5157 case -NFS4ERR_ADMIN_REVOKED
:
5158 case -NFS4ERR_DELEG_REVOKED
:
5159 case -NFS4ERR_BAD_STATEID
:
5160 case -NFS4ERR_OLD_STATEID
:
5161 case -NFS4ERR_STALE_STATEID
:
5162 case -NFS4ERR_EXPIRED
:
5163 task
->tk_status
= 0;
5165 pnfs_roc_set_barrier(data
->inode
, data
->roc_barrier
);
5168 if (nfs4_async_handle_error(task
, data
->res
.server
,
5169 NULL
, NULL
) == -EAGAIN
) {
5170 rpc_restart_call_prepare(task
);
5174 data
->rpc_status
= task
->tk_status
;
5177 static void nfs4_delegreturn_release(void *calldata
)
5179 struct nfs4_delegreturndata
*data
= calldata
;
5182 pnfs_roc_release(data
->inode
);
5186 static void nfs4_delegreturn_prepare(struct rpc_task
*task
, void *data
)
5188 struct nfs4_delegreturndata
*d_data
;
5190 d_data
= (struct nfs4_delegreturndata
*)data
;
5193 pnfs_roc_drain(d_data
->inode
, &d_data
->roc_barrier
, task
))
5196 nfs4_setup_sequence(d_data
->res
.server
,
5197 &d_data
->args
.seq_args
,
5198 &d_data
->res
.seq_res
,
5202 static const struct rpc_call_ops nfs4_delegreturn_ops
= {
5203 .rpc_call_prepare
= nfs4_delegreturn_prepare
,
5204 .rpc_call_done
= nfs4_delegreturn_done
,
5205 .rpc_release
= nfs4_delegreturn_release
,
5208 static int _nfs4_proc_delegreturn(struct inode
*inode
, struct rpc_cred
*cred
, const nfs4_stateid
*stateid
, int issync
)
5210 struct nfs4_delegreturndata
*data
;
5211 struct nfs_server
*server
= NFS_SERVER(inode
);
5212 struct rpc_task
*task
;
5213 struct rpc_message msg
= {
5214 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_DELEGRETURN
],
5217 struct rpc_task_setup task_setup_data
= {
5218 .rpc_client
= server
->client
,
5219 .rpc_message
= &msg
,
5220 .callback_ops
= &nfs4_delegreturn_ops
,
5221 .flags
= RPC_TASK_ASYNC
,
5225 data
= kzalloc(sizeof(*data
), GFP_NOFS
);
5228 nfs4_init_sequence(&data
->args
.seq_args
, &data
->res
.seq_res
, 1);
5229 data
->args
.fhandle
= &data
->fh
;
5230 data
->args
.stateid
= &data
->stateid
;
5231 data
->args
.bitmask
= server
->cache_consistency_bitmask
;
5232 nfs_copy_fh(&data
->fh
, NFS_FH(inode
));
5233 nfs4_stateid_copy(&data
->stateid
, stateid
);
5234 data
->res
.fattr
= &data
->fattr
;
5235 data
->res
.server
= server
;
5236 nfs_fattr_init(data
->res
.fattr
);
5237 data
->timestamp
= jiffies
;
5238 data
->rpc_status
= 0;
5239 data
->inode
= inode
;
5240 data
->roc
= list_empty(&NFS_I(inode
)->open_files
) ?
5241 pnfs_roc(inode
) : false;
5243 task_setup_data
.callback_data
= data
;
5244 msg
.rpc_argp
= &data
->args
;
5245 msg
.rpc_resp
= &data
->res
;
5246 task
= rpc_run_task(&task_setup_data
);
5248 return PTR_ERR(task
);
5251 status
= nfs4_wait_for_completion_rpc_task(task
);
5254 status
= data
->rpc_status
;
5256 nfs_post_op_update_inode_force_wcc(inode
, &data
->fattr
);
5258 nfs_refresh_inode(inode
, &data
->fattr
);
5264 int nfs4_proc_delegreturn(struct inode
*inode
, struct rpc_cred
*cred
, const nfs4_stateid
*stateid
, int issync
)
5266 struct nfs_server
*server
= NFS_SERVER(inode
);
5267 struct nfs4_exception exception
= { };
5270 err
= _nfs4_proc_delegreturn(inode
, cred
, stateid
, issync
);
5271 trace_nfs4_delegreturn(inode
, err
);
5273 case -NFS4ERR_STALE_STATEID
:
5274 case -NFS4ERR_EXPIRED
:
5278 err
= nfs4_handle_exception(server
, err
, &exception
);
5279 } while (exception
.retry
);
5283 #define NFS4_LOCK_MINTIMEOUT (1 * HZ)
5284 #define NFS4_LOCK_MAXTIMEOUT (30 * HZ)
5287 * sleep, with exponential backoff, and retry the LOCK operation.
5289 static unsigned long
5290 nfs4_set_lock_task_retry(unsigned long timeout
)
5292 freezable_schedule_timeout_killable_unsafe(timeout
);
5294 if (timeout
> NFS4_LOCK_MAXTIMEOUT
)
5295 return NFS4_LOCK_MAXTIMEOUT
;
5299 static int _nfs4_proc_getlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
5301 struct inode
*inode
= state
->inode
;
5302 struct nfs_server
*server
= NFS_SERVER(inode
);
5303 struct nfs_client
*clp
= server
->nfs_client
;
5304 struct nfs_lockt_args arg
= {
5305 .fh
= NFS_FH(inode
),
5308 struct nfs_lockt_res res
= {
5311 struct rpc_message msg
= {
5312 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOCKT
],
5315 .rpc_cred
= state
->owner
->so_cred
,
5317 struct nfs4_lock_state
*lsp
;
5320 arg
.lock_owner
.clientid
= clp
->cl_clientid
;
5321 status
= nfs4_set_lock_state(state
, request
);
5324 lsp
= request
->fl_u
.nfs4_fl
.owner
;
5325 arg
.lock_owner
.id
= lsp
->ls_seqid
.owner_id
;
5326 arg
.lock_owner
.s_dev
= server
->s_dev
;
5327 status
= nfs4_call_sync(server
->client
, server
, &msg
, &arg
.seq_args
, &res
.seq_res
, 1);
5330 request
->fl_type
= F_UNLCK
;
5332 case -NFS4ERR_DENIED
:
5335 request
->fl_ops
->fl_release_private(request
);
5336 request
->fl_ops
= NULL
;
5341 static int nfs4_proc_getlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
5343 struct nfs4_exception exception
= { };
5347 err
= _nfs4_proc_getlk(state
, cmd
, request
);
5348 trace_nfs4_get_lock(request
, state
, cmd
, err
);
5349 err
= nfs4_handle_exception(NFS_SERVER(state
->inode
), err
,
5351 } while (exception
.retry
);
5355 static int do_vfs_lock(struct file
*file
, struct file_lock
*fl
)
5358 switch (fl
->fl_flags
& (FL_POSIX
|FL_FLOCK
)) {
5360 res
= posix_lock_file_wait(file
, fl
);
5363 res
= flock_lock_file_wait(file
, fl
);
5371 struct nfs4_unlockdata
{
5372 struct nfs_locku_args arg
;
5373 struct nfs_locku_res res
;
5374 struct nfs4_lock_state
*lsp
;
5375 struct nfs_open_context
*ctx
;
5376 struct file_lock fl
;
5377 const struct nfs_server
*server
;
5378 unsigned long timestamp
;
5381 static struct nfs4_unlockdata
*nfs4_alloc_unlockdata(struct file_lock
*fl
,
5382 struct nfs_open_context
*ctx
,
5383 struct nfs4_lock_state
*lsp
,
5384 struct nfs_seqid
*seqid
)
5386 struct nfs4_unlockdata
*p
;
5387 struct inode
*inode
= lsp
->ls_state
->inode
;
5389 p
= kzalloc(sizeof(*p
), GFP_NOFS
);
5392 p
->arg
.fh
= NFS_FH(inode
);
5394 p
->arg
.seqid
= seqid
;
5395 p
->res
.seqid
= seqid
;
5396 p
->arg
.stateid
= &lsp
->ls_stateid
;
5398 atomic_inc(&lsp
->ls_count
);
5399 /* Ensure we don't close file until we're done freeing locks! */
5400 p
->ctx
= get_nfs_open_context(ctx
);
5401 memcpy(&p
->fl
, fl
, sizeof(p
->fl
));
5402 p
->server
= NFS_SERVER(inode
);
5406 static void nfs4_locku_release_calldata(void *data
)
5408 struct nfs4_unlockdata
*calldata
= data
;
5409 nfs_free_seqid(calldata
->arg
.seqid
);
5410 nfs4_put_lock_state(calldata
->lsp
);
5411 put_nfs_open_context(calldata
->ctx
);
5415 static void nfs4_locku_done(struct rpc_task
*task
, void *data
)
5417 struct nfs4_unlockdata
*calldata
= data
;
5419 if (!nfs4_sequence_done(task
, &calldata
->res
.seq_res
))
5421 switch (task
->tk_status
) {
5423 renew_lease(calldata
->server
, calldata
->timestamp
);
5424 nfs4_update_lock_stateid(calldata
->lsp
,
5425 &calldata
->res
.stateid
);
5427 case -NFS4ERR_BAD_STATEID
:
5428 case -NFS4ERR_OLD_STATEID
:
5429 case -NFS4ERR_STALE_STATEID
:
5430 case -NFS4ERR_EXPIRED
:
5433 if (nfs4_async_handle_error(task
, calldata
->server
,
5434 NULL
, NULL
) == -EAGAIN
)
5435 rpc_restart_call_prepare(task
);
5437 nfs_release_seqid(calldata
->arg
.seqid
);
5440 static void nfs4_locku_prepare(struct rpc_task
*task
, void *data
)
5442 struct nfs4_unlockdata
*calldata
= data
;
5444 if (nfs_wait_on_sequence(calldata
->arg
.seqid
, task
) != 0)
5446 if (test_bit(NFS_LOCK_INITIALIZED
, &calldata
->lsp
->ls_flags
) == 0) {
5447 /* Note: exit _without_ running nfs4_locku_done */
5450 calldata
->timestamp
= jiffies
;
5451 if (nfs4_setup_sequence(calldata
->server
,
5452 &calldata
->arg
.seq_args
,
5453 &calldata
->res
.seq_res
,
5455 nfs_release_seqid(calldata
->arg
.seqid
);
5458 task
->tk_action
= NULL
;
5460 nfs4_sequence_done(task
, &calldata
->res
.seq_res
);
5463 static const struct rpc_call_ops nfs4_locku_ops
= {
5464 .rpc_call_prepare
= nfs4_locku_prepare
,
5465 .rpc_call_done
= nfs4_locku_done
,
5466 .rpc_release
= nfs4_locku_release_calldata
,
5469 static struct rpc_task
*nfs4_do_unlck(struct file_lock
*fl
,
5470 struct nfs_open_context
*ctx
,
5471 struct nfs4_lock_state
*lsp
,
5472 struct nfs_seqid
*seqid
)
5474 struct nfs4_unlockdata
*data
;
5475 struct rpc_message msg
= {
5476 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOCKU
],
5477 .rpc_cred
= ctx
->cred
,
5479 struct rpc_task_setup task_setup_data
= {
5480 .rpc_client
= NFS_CLIENT(lsp
->ls_state
->inode
),
5481 .rpc_message
= &msg
,
5482 .callback_ops
= &nfs4_locku_ops
,
5483 .workqueue
= nfsiod_workqueue
,
5484 .flags
= RPC_TASK_ASYNC
,
5487 nfs4_state_protect(NFS_SERVER(lsp
->ls_state
->inode
)->nfs_client
,
5488 NFS_SP4_MACH_CRED_CLEANUP
, &task_setup_data
.rpc_client
, &msg
);
5490 /* Ensure this is an unlock - when canceling a lock, the
5491 * canceled lock is passed in, and it won't be an unlock.
5493 fl
->fl_type
= F_UNLCK
;
5495 data
= nfs4_alloc_unlockdata(fl
, ctx
, lsp
, seqid
);
5497 nfs_free_seqid(seqid
);
5498 return ERR_PTR(-ENOMEM
);
5501 nfs4_init_sequence(&data
->arg
.seq_args
, &data
->res
.seq_res
, 1);
5502 msg
.rpc_argp
= &data
->arg
;
5503 msg
.rpc_resp
= &data
->res
;
5504 task_setup_data
.callback_data
= data
;
5505 return rpc_run_task(&task_setup_data
);
5508 static int nfs4_proc_unlck(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
5510 struct inode
*inode
= state
->inode
;
5511 struct nfs4_state_owner
*sp
= state
->owner
;
5512 struct nfs_inode
*nfsi
= NFS_I(inode
);
5513 struct nfs_seqid
*seqid
;
5514 struct nfs4_lock_state
*lsp
;
5515 struct rpc_task
*task
;
5517 unsigned char fl_flags
= request
->fl_flags
;
5519 status
= nfs4_set_lock_state(state
, request
);
5520 /* Unlock _before_ we do the RPC call */
5521 request
->fl_flags
|= FL_EXISTS
;
5522 /* Exclude nfs_delegation_claim_locks() */
5523 mutex_lock(&sp
->so_delegreturn_mutex
);
5524 /* Exclude nfs4_reclaim_open_stateid() - note nesting! */
5525 down_read(&nfsi
->rwsem
);
5526 if (do_vfs_lock(request
->fl_file
, request
) == -ENOENT
) {
5527 up_read(&nfsi
->rwsem
);
5528 mutex_unlock(&sp
->so_delegreturn_mutex
);
5531 up_read(&nfsi
->rwsem
);
5532 mutex_unlock(&sp
->so_delegreturn_mutex
);
5535 /* Is this a delegated lock? */
5536 lsp
= request
->fl_u
.nfs4_fl
.owner
;
5537 if (test_bit(NFS_LOCK_INITIALIZED
, &lsp
->ls_flags
) == 0)
5539 seqid
= nfs_alloc_seqid(&lsp
->ls_seqid
, GFP_KERNEL
);
5543 task
= nfs4_do_unlck(request
, nfs_file_open_context(request
->fl_file
), lsp
, seqid
);
5544 status
= PTR_ERR(task
);
5547 status
= nfs4_wait_for_completion_rpc_task(task
);
5550 request
->fl_flags
= fl_flags
;
5551 trace_nfs4_unlock(request
, state
, F_SETLK
, status
);
5555 struct nfs4_lockdata
{
5556 struct nfs_lock_args arg
;
5557 struct nfs_lock_res res
;
5558 struct nfs4_lock_state
*lsp
;
5559 struct nfs_open_context
*ctx
;
5560 struct file_lock fl
;
5561 unsigned long timestamp
;
5564 struct nfs_server
*server
;
5567 static struct nfs4_lockdata
*nfs4_alloc_lockdata(struct file_lock
*fl
,
5568 struct nfs_open_context
*ctx
, struct nfs4_lock_state
*lsp
,
5571 struct nfs4_lockdata
*p
;
5572 struct inode
*inode
= lsp
->ls_state
->inode
;
5573 struct nfs_server
*server
= NFS_SERVER(inode
);
5575 p
= kzalloc(sizeof(*p
), gfp_mask
);
5579 p
->arg
.fh
= NFS_FH(inode
);
5581 p
->arg
.open_seqid
= nfs_alloc_seqid(&lsp
->ls_state
->owner
->so_seqid
, gfp_mask
);
5582 if (IS_ERR(p
->arg
.open_seqid
))
5584 p
->arg
.lock_seqid
= nfs_alloc_seqid(&lsp
->ls_seqid
, gfp_mask
);
5585 if (IS_ERR(p
->arg
.lock_seqid
))
5586 goto out_free_seqid
;
5587 p
->arg
.lock_stateid
= &lsp
->ls_stateid
;
5588 p
->arg
.lock_owner
.clientid
= server
->nfs_client
->cl_clientid
;
5589 p
->arg
.lock_owner
.id
= lsp
->ls_seqid
.owner_id
;
5590 p
->arg
.lock_owner
.s_dev
= server
->s_dev
;
5591 p
->res
.lock_seqid
= p
->arg
.lock_seqid
;
5594 atomic_inc(&lsp
->ls_count
);
5595 p
->ctx
= get_nfs_open_context(ctx
);
5596 memcpy(&p
->fl
, fl
, sizeof(p
->fl
));
5599 nfs_free_seqid(p
->arg
.open_seqid
);
5605 static void nfs4_lock_prepare(struct rpc_task
*task
, void *calldata
)
5607 struct nfs4_lockdata
*data
= calldata
;
5608 struct nfs4_state
*state
= data
->lsp
->ls_state
;
5610 dprintk("%s: begin!\n", __func__
);
5611 if (nfs_wait_on_sequence(data
->arg
.lock_seqid
, task
) != 0)
5613 /* Do we need to do an open_to_lock_owner? */
5614 if (!test_bit(NFS_LOCK_INITIALIZED
, &data
->lsp
->ls_flags
)) {
5615 if (nfs_wait_on_sequence(data
->arg
.open_seqid
, task
) != 0) {
5616 goto out_release_lock_seqid
;
5618 data
->arg
.open_stateid
= &state
->open_stateid
;
5619 data
->arg
.new_lock_owner
= 1;
5620 data
->res
.open_seqid
= data
->arg
.open_seqid
;
5622 data
->arg
.new_lock_owner
= 0;
5623 if (!nfs4_valid_open_stateid(state
)) {
5624 data
->rpc_status
= -EBADF
;
5625 task
->tk_action
= NULL
;
5626 goto out_release_open_seqid
;
5628 data
->timestamp
= jiffies
;
5629 if (nfs4_setup_sequence(data
->server
,
5630 &data
->arg
.seq_args
,
5634 out_release_open_seqid
:
5635 nfs_release_seqid(data
->arg
.open_seqid
);
5636 out_release_lock_seqid
:
5637 nfs_release_seqid(data
->arg
.lock_seqid
);
5639 nfs4_sequence_done(task
, &data
->res
.seq_res
);
5640 dprintk("%s: done!, ret = %d\n", __func__
, data
->rpc_status
);
5643 static void nfs4_lock_done(struct rpc_task
*task
, void *calldata
)
5645 struct nfs4_lockdata
*data
= calldata
;
5646 struct nfs4_lock_state
*lsp
= data
->lsp
;
5648 dprintk("%s: begin!\n", __func__
);
5650 if (!nfs4_sequence_done(task
, &data
->res
.seq_res
))
5653 data
->rpc_status
= task
->tk_status
;
5654 if (task
->tk_status
== 0) {
5655 renew_lease(NFS_SERVER(data
->ctx
->dentry
->d_inode
),
5657 if (data
->arg
.new_lock_owner
!= 0) {
5658 nfs_confirm_seqid(&lsp
->ls_seqid
, 0);
5659 nfs4_stateid_copy(&lsp
->ls_stateid
, &data
->res
.stateid
);
5660 set_bit(NFS_LOCK_INITIALIZED
, &lsp
->ls_flags
);
5661 } else if (!nfs4_update_lock_stateid(lsp
, &data
->res
.stateid
))
5662 rpc_restart_call_prepare(task
);
5664 dprintk("%s: done, ret = %d!\n", __func__
, data
->rpc_status
);
5667 static void nfs4_lock_release(void *calldata
)
5669 struct nfs4_lockdata
*data
= calldata
;
5671 dprintk("%s: begin!\n", __func__
);
5672 nfs_free_seqid(data
->arg
.open_seqid
);
5673 if (data
->cancelled
!= 0) {
5674 struct rpc_task
*task
;
5675 task
= nfs4_do_unlck(&data
->fl
, data
->ctx
, data
->lsp
,
5676 data
->arg
.lock_seqid
);
5678 rpc_put_task_async(task
);
5679 dprintk("%s: cancelling lock!\n", __func__
);
5681 nfs_free_seqid(data
->arg
.lock_seqid
);
5682 nfs4_put_lock_state(data
->lsp
);
5683 put_nfs_open_context(data
->ctx
);
5685 dprintk("%s: done!\n", __func__
);
5688 static const struct rpc_call_ops nfs4_lock_ops
= {
5689 .rpc_call_prepare
= nfs4_lock_prepare
,
5690 .rpc_call_done
= nfs4_lock_done
,
5691 .rpc_release
= nfs4_lock_release
,
5694 static void nfs4_handle_setlk_error(struct nfs_server
*server
, struct nfs4_lock_state
*lsp
, int new_lock_owner
, int error
)
5697 case -NFS4ERR_ADMIN_REVOKED
:
5698 case -NFS4ERR_BAD_STATEID
:
5699 lsp
->ls_seqid
.flags
&= ~NFS_SEQID_CONFIRMED
;
5700 if (new_lock_owner
!= 0 ||
5701 test_bit(NFS_LOCK_INITIALIZED
, &lsp
->ls_flags
) != 0)
5702 nfs4_schedule_stateid_recovery(server
, lsp
->ls_state
);
5704 case -NFS4ERR_STALE_STATEID
:
5705 lsp
->ls_seqid
.flags
&= ~NFS_SEQID_CONFIRMED
;
5706 case -NFS4ERR_EXPIRED
:
5707 nfs4_schedule_lease_recovery(server
->nfs_client
);
5711 static int _nfs4_do_setlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*fl
, int recovery_type
)
5713 struct nfs4_lockdata
*data
;
5714 struct rpc_task
*task
;
5715 struct rpc_message msg
= {
5716 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOCK
],
5717 .rpc_cred
= state
->owner
->so_cred
,
5719 struct rpc_task_setup task_setup_data
= {
5720 .rpc_client
= NFS_CLIENT(state
->inode
),
5721 .rpc_message
= &msg
,
5722 .callback_ops
= &nfs4_lock_ops
,
5723 .workqueue
= nfsiod_workqueue
,
5724 .flags
= RPC_TASK_ASYNC
,
5728 dprintk("%s: begin!\n", __func__
);
5729 data
= nfs4_alloc_lockdata(fl
, nfs_file_open_context(fl
->fl_file
),
5730 fl
->fl_u
.nfs4_fl
.owner
,
5731 recovery_type
== NFS_LOCK_NEW
? GFP_KERNEL
: GFP_NOFS
);
5735 data
->arg
.block
= 1;
5736 nfs4_init_sequence(&data
->arg
.seq_args
, &data
->res
.seq_res
, 1);
5737 msg
.rpc_argp
= &data
->arg
;
5738 msg
.rpc_resp
= &data
->res
;
5739 task_setup_data
.callback_data
= data
;
5740 if (recovery_type
> NFS_LOCK_NEW
) {
5741 if (recovery_type
== NFS_LOCK_RECLAIM
)
5742 data
->arg
.reclaim
= NFS_LOCK_RECLAIM
;
5743 nfs4_set_sequence_privileged(&data
->arg
.seq_args
);
5745 task
= rpc_run_task(&task_setup_data
);
5747 return PTR_ERR(task
);
5748 ret
= nfs4_wait_for_completion_rpc_task(task
);
5750 ret
= data
->rpc_status
;
5752 nfs4_handle_setlk_error(data
->server
, data
->lsp
,
5753 data
->arg
.new_lock_owner
, ret
);
5755 data
->cancelled
= 1;
5757 dprintk("%s: done, ret = %d!\n", __func__
, ret
);
5761 static int nfs4_lock_reclaim(struct nfs4_state
*state
, struct file_lock
*request
)
5763 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
5764 struct nfs4_exception exception
= {
5765 .inode
= state
->inode
,
5770 /* Cache the lock if possible... */
5771 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) != 0)
5773 err
= _nfs4_do_setlk(state
, F_SETLK
, request
, NFS_LOCK_RECLAIM
);
5774 trace_nfs4_lock_reclaim(request
, state
, F_SETLK
, err
);
5775 if (err
!= -NFS4ERR_DELAY
)
5777 nfs4_handle_exception(server
, err
, &exception
);
5778 } while (exception
.retry
);
5782 static int nfs4_lock_expired(struct nfs4_state
*state
, struct file_lock
*request
)
5784 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
5785 struct nfs4_exception exception
= {
5786 .inode
= state
->inode
,
5790 err
= nfs4_set_lock_state(state
, request
);
5793 if (!recover_lost_locks
) {
5794 set_bit(NFS_LOCK_LOST
, &request
->fl_u
.nfs4_fl
.owner
->ls_flags
);
5798 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) != 0)
5800 err
= _nfs4_do_setlk(state
, F_SETLK
, request
, NFS_LOCK_EXPIRED
);
5801 trace_nfs4_lock_expired(request
, state
, F_SETLK
, err
);
5805 case -NFS4ERR_GRACE
:
5806 case -NFS4ERR_DELAY
:
5807 nfs4_handle_exception(server
, err
, &exception
);
5810 } while (exception
.retry
);
5815 #if defined(CONFIG_NFS_V4_1)
5817 * nfs41_check_expired_locks - possibly free a lock stateid
5819 * @state: NFSv4 state for an inode
5821 * Returns NFS_OK if recovery for this stateid is now finished.
5822 * Otherwise a negative NFS4ERR value is returned.
5824 static int nfs41_check_expired_locks(struct nfs4_state
*state
)
5826 int status
, ret
= -NFS4ERR_BAD_STATEID
;
5827 struct nfs4_lock_state
*lsp
;
5828 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
5830 list_for_each_entry(lsp
, &state
->lock_states
, ls_locks
) {
5831 if (test_bit(NFS_LOCK_INITIALIZED
, &lsp
->ls_flags
)) {
5832 struct rpc_cred
*cred
= lsp
->ls_state
->owner
->so_cred
;
5834 status
= nfs41_test_stateid(server
,
5837 trace_nfs4_test_lock_stateid(state
, lsp
, status
);
5838 if (status
!= NFS_OK
) {
5839 /* Free the stateid unless the server
5840 * informs us the stateid is unrecognized. */
5841 if (status
!= -NFS4ERR_BAD_STATEID
)
5842 nfs41_free_stateid(server
,
5845 clear_bit(NFS_LOCK_INITIALIZED
, &lsp
->ls_flags
);
5854 static int nfs41_lock_expired(struct nfs4_state
*state
, struct file_lock
*request
)
5856 int status
= NFS_OK
;
5858 if (test_bit(LK_STATE_IN_USE
, &state
->flags
))
5859 status
= nfs41_check_expired_locks(state
);
5860 if (status
!= NFS_OK
)
5861 status
= nfs4_lock_expired(state
, request
);
5866 static int _nfs4_proc_setlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
5868 struct nfs4_state_owner
*sp
= state
->owner
;
5869 struct nfs_inode
*nfsi
= NFS_I(state
->inode
);
5870 unsigned char fl_flags
= request
->fl_flags
;
5872 int status
= -ENOLCK
;
5874 if ((fl_flags
& FL_POSIX
) &&
5875 !test_bit(NFS_STATE_POSIX_LOCKS
, &state
->flags
))
5877 /* Is this a delegated open? */
5878 status
= nfs4_set_lock_state(state
, request
);
5881 request
->fl_flags
|= FL_ACCESS
;
5882 status
= do_vfs_lock(request
->fl_file
, request
);
5885 down_read(&nfsi
->rwsem
);
5886 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
)) {
5887 /* Yes: cache locks! */
5888 /* ...but avoid races with delegation recall... */
5889 request
->fl_flags
= fl_flags
& ~FL_SLEEP
;
5890 status
= do_vfs_lock(request
->fl_file
, request
);
5893 seq
= raw_seqcount_begin(&sp
->so_reclaim_seqcount
);
5894 up_read(&nfsi
->rwsem
);
5895 status
= _nfs4_do_setlk(state
, cmd
, request
, NFS_LOCK_NEW
);
5898 down_read(&nfsi
->rwsem
);
5899 if (read_seqcount_retry(&sp
->so_reclaim_seqcount
, seq
)) {
5900 status
= -NFS4ERR_DELAY
;
5903 /* Note: we always want to sleep here! */
5904 request
->fl_flags
= fl_flags
| FL_SLEEP
;
5905 if (do_vfs_lock(request
->fl_file
, request
) < 0)
5906 printk(KERN_WARNING
"NFS: %s: VFS is out of sync with lock "
5907 "manager!\n", __func__
);
5909 up_read(&nfsi
->rwsem
);
5911 request
->fl_flags
= fl_flags
;
5915 static int nfs4_proc_setlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
5917 struct nfs4_exception exception
= {
5919 .inode
= state
->inode
,
5924 err
= _nfs4_proc_setlk(state
, cmd
, request
);
5925 trace_nfs4_set_lock(request
, state
, cmd
, err
);
5926 if (err
== -NFS4ERR_DENIED
)
5928 err
= nfs4_handle_exception(NFS_SERVER(state
->inode
),
5930 } while (exception
.retry
);
5935 nfs4_proc_lock(struct file
*filp
, int cmd
, struct file_lock
*request
)
5937 struct nfs_open_context
*ctx
;
5938 struct nfs4_state
*state
;
5939 unsigned long timeout
= NFS4_LOCK_MINTIMEOUT
;
5942 /* verify open state */
5943 ctx
= nfs_file_open_context(filp
);
5946 if (request
->fl_start
< 0 || request
->fl_end
< 0)
5949 if (IS_GETLK(cmd
)) {
5951 return nfs4_proc_getlk(state
, F_GETLK
, request
);
5955 if (!(IS_SETLK(cmd
) || IS_SETLKW(cmd
)))
5958 if (request
->fl_type
== F_UNLCK
) {
5960 return nfs4_proc_unlck(state
, cmd
, request
);
5967 * Don't rely on the VFS having checked the file open mode,
5968 * since it won't do this for flock() locks.
5970 switch (request
->fl_type
) {
5972 if (!(filp
->f_mode
& FMODE_READ
))
5976 if (!(filp
->f_mode
& FMODE_WRITE
))
5981 status
= nfs4_proc_setlk(state
, cmd
, request
);
5982 if ((status
!= -EAGAIN
) || IS_SETLK(cmd
))
5984 timeout
= nfs4_set_lock_task_retry(timeout
);
5985 status
= -ERESTARTSYS
;
5988 } while(status
< 0);
5992 int nfs4_lock_delegation_recall(struct file_lock
*fl
, struct nfs4_state
*state
, const nfs4_stateid
*stateid
)
5994 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
5997 err
= nfs4_set_lock_state(state
, fl
);
6000 err
= _nfs4_do_setlk(state
, F_SETLK
, fl
, NFS_LOCK_NEW
);
6001 return nfs4_handle_delegation_recall_error(server
, state
, stateid
, err
);
6004 struct nfs_release_lockowner_data
{
6005 struct nfs4_lock_state
*lsp
;
6006 struct nfs_server
*server
;
6007 struct nfs_release_lockowner_args args
;
6008 struct nfs_release_lockowner_res res
;
6009 unsigned long timestamp
;
6012 static void nfs4_release_lockowner_prepare(struct rpc_task
*task
, void *calldata
)
6014 struct nfs_release_lockowner_data
*data
= calldata
;
6015 struct nfs_server
*server
= data
->server
;
6016 nfs40_setup_sequence(server
, &data
->args
.seq_args
,
6017 &data
->res
.seq_res
, task
);
6018 data
->args
.lock_owner
.clientid
= server
->nfs_client
->cl_clientid
;
6019 data
->timestamp
= jiffies
;
6022 static void nfs4_release_lockowner_done(struct rpc_task
*task
, void *calldata
)
6024 struct nfs_release_lockowner_data
*data
= calldata
;
6025 struct nfs_server
*server
= data
->server
;
6027 nfs40_sequence_done(task
, &data
->res
.seq_res
);
6029 switch (task
->tk_status
) {
6031 renew_lease(server
, data
->timestamp
);
6033 case -NFS4ERR_STALE_CLIENTID
:
6034 case -NFS4ERR_EXPIRED
:
6035 nfs4_schedule_lease_recovery(server
->nfs_client
);
6037 case -NFS4ERR_LEASE_MOVED
:
6038 case -NFS4ERR_DELAY
:
6039 if (nfs4_async_handle_error(task
, server
,
6040 NULL
, NULL
) == -EAGAIN
)
6041 rpc_restart_call_prepare(task
);
6045 static void nfs4_release_lockowner_release(void *calldata
)
6047 struct nfs_release_lockowner_data
*data
= calldata
;
6048 nfs4_free_lock_state(data
->server
, data
->lsp
);
6052 static const struct rpc_call_ops nfs4_release_lockowner_ops
= {
6053 .rpc_call_prepare
= nfs4_release_lockowner_prepare
,
6054 .rpc_call_done
= nfs4_release_lockowner_done
,
6055 .rpc_release
= nfs4_release_lockowner_release
,
6059 nfs4_release_lockowner(struct nfs_server
*server
, struct nfs4_lock_state
*lsp
)
6061 struct nfs_release_lockowner_data
*data
;
6062 struct rpc_message msg
= {
6063 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RELEASE_LOCKOWNER
],
6066 if (server
->nfs_client
->cl_mvops
->minor_version
!= 0)
6069 data
= kmalloc(sizeof(*data
), GFP_NOFS
);
6073 data
->server
= server
;
6074 data
->args
.lock_owner
.clientid
= server
->nfs_client
->cl_clientid
;
6075 data
->args
.lock_owner
.id
= lsp
->ls_seqid
.owner_id
;
6076 data
->args
.lock_owner
.s_dev
= server
->s_dev
;
6078 msg
.rpc_argp
= &data
->args
;
6079 msg
.rpc_resp
= &data
->res
;
6080 nfs4_init_sequence(&data
->args
.seq_args
, &data
->res
.seq_res
, 0);
6081 rpc_call_async(server
->client
, &msg
, 0, &nfs4_release_lockowner_ops
, data
);
6084 #define XATTR_NAME_NFSV4_ACL "system.nfs4_acl"
6086 static int nfs4_xattr_set_nfs4_acl(struct dentry
*dentry
, const char *key
,
6087 const void *buf
, size_t buflen
,
6088 int flags
, int type
)
6090 if (strcmp(key
, "") != 0)
6093 return nfs4_proc_set_acl(dentry
->d_inode
, buf
, buflen
);
6096 static int nfs4_xattr_get_nfs4_acl(struct dentry
*dentry
, const char *key
,
6097 void *buf
, size_t buflen
, int type
)
6099 if (strcmp(key
, "") != 0)
6102 return nfs4_proc_get_acl(dentry
->d_inode
, buf
, buflen
);
6105 static size_t nfs4_xattr_list_nfs4_acl(struct dentry
*dentry
, char *list
,
6106 size_t list_len
, const char *name
,
6107 size_t name_len
, int type
)
6109 size_t len
= sizeof(XATTR_NAME_NFSV4_ACL
);
6111 if (!nfs4_server_supports_acls(NFS_SERVER(dentry
->d_inode
)))
6114 if (list
&& len
<= list_len
)
6115 memcpy(list
, XATTR_NAME_NFSV4_ACL
, len
);
6119 #ifdef CONFIG_NFS_V4_SECURITY_LABEL
6120 static inline int nfs4_server_supports_labels(struct nfs_server
*server
)
6122 return server
->caps
& NFS_CAP_SECURITY_LABEL
;
6125 static int nfs4_xattr_set_nfs4_label(struct dentry
*dentry
, const char *key
,
6126 const void *buf
, size_t buflen
,
6127 int flags
, int type
)
6129 if (security_ismaclabel(key
))
6130 return nfs4_set_security_label(dentry
, buf
, buflen
);
6135 static int nfs4_xattr_get_nfs4_label(struct dentry
*dentry
, const char *key
,
6136 void *buf
, size_t buflen
, int type
)
6138 if (security_ismaclabel(key
))
6139 return nfs4_get_security_label(dentry
->d_inode
, buf
, buflen
);
6143 static size_t nfs4_xattr_list_nfs4_label(struct dentry
*dentry
, char *list
,
6144 size_t list_len
, const char *name
,
6145 size_t name_len
, int type
)
6149 if (nfs_server_capable(dentry
->d_inode
, NFS_CAP_SECURITY_LABEL
)) {
6150 len
= security_inode_listsecurity(dentry
->d_inode
, NULL
, 0);
6151 if (list
&& len
<= list_len
)
6152 security_inode_listsecurity(dentry
->d_inode
, list
, len
);
6157 static const struct xattr_handler nfs4_xattr_nfs4_label_handler
= {
6158 .prefix
= XATTR_SECURITY_PREFIX
,
6159 .list
= nfs4_xattr_list_nfs4_label
,
6160 .get
= nfs4_xattr_get_nfs4_label
,
6161 .set
= nfs4_xattr_set_nfs4_label
,
6167 * nfs_fhget will use either the mounted_on_fileid or the fileid
6169 static void nfs_fixup_referral_attributes(struct nfs_fattr
*fattr
)
6171 if (!(((fattr
->valid
& NFS_ATTR_FATTR_MOUNTED_ON_FILEID
) ||
6172 (fattr
->valid
& NFS_ATTR_FATTR_FILEID
)) &&
6173 (fattr
->valid
& NFS_ATTR_FATTR_FSID
) &&
6174 (fattr
->valid
& NFS_ATTR_FATTR_V4_LOCATIONS
)))
6177 fattr
->valid
|= NFS_ATTR_FATTR_TYPE
| NFS_ATTR_FATTR_MODE
|
6178 NFS_ATTR_FATTR_NLINK
| NFS_ATTR_FATTR_V4_REFERRAL
;
6179 fattr
->mode
= S_IFDIR
| S_IRUGO
| S_IXUGO
;
6183 static int _nfs4_proc_fs_locations(struct rpc_clnt
*client
, struct inode
*dir
,
6184 const struct qstr
*name
,
6185 struct nfs4_fs_locations
*fs_locations
,
6188 struct nfs_server
*server
= NFS_SERVER(dir
);
6190 [0] = FATTR4_WORD0_FSID
| FATTR4_WORD0_FS_LOCATIONS
,
6192 struct nfs4_fs_locations_arg args
= {
6193 .dir_fh
= NFS_FH(dir
),
6198 struct nfs4_fs_locations_res res
= {
6199 .fs_locations
= fs_locations
,
6201 struct rpc_message msg
= {
6202 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_FS_LOCATIONS
],
6208 dprintk("%s: start\n", __func__
);
6210 /* Ask for the fileid of the absent filesystem if mounted_on_fileid
6211 * is not supported */
6212 if (NFS_SERVER(dir
)->attr_bitmask
[1] & FATTR4_WORD1_MOUNTED_ON_FILEID
)
6213 bitmask
[1] |= FATTR4_WORD1_MOUNTED_ON_FILEID
;
6215 bitmask
[0] |= FATTR4_WORD0_FILEID
;
6217 nfs_fattr_init(&fs_locations
->fattr
);
6218 fs_locations
->server
= server
;
6219 fs_locations
->nlocations
= 0;
6220 status
= nfs4_call_sync(client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
6221 dprintk("%s: returned status = %d\n", __func__
, status
);
6225 int nfs4_proc_fs_locations(struct rpc_clnt
*client
, struct inode
*dir
,
6226 const struct qstr
*name
,
6227 struct nfs4_fs_locations
*fs_locations
,
6230 struct nfs4_exception exception
= { };
6233 err
= _nfs4_proc_fs_locations(client
, dir
, name
,
6234 fs_locations
, page
);
6235 trace_nfs4_get_fs_locations(dir
, name
, err
);
6236 err
= nfs4_handle_exception(NFS_SERVER(dir
), err
,
6238 } while (exception
.retry
);
6243 * This operation also signals the server that this client is
6244 * performing migration recovery. The server can stop returning
6245 * NFS4ERR_LEASE_MOVED to this client. A RENEW operation is
6246 * appended to this compound to identify the client ID which is
6247 * performing recovery.
6249 static int _nfs40_proc_get_locations(struct inode
*inode
,
6250 struct nfs4_fs_locations
*locations
,
6251 struct page
*page
, struct rpc_cred
*cred
)
6253 struct nfs_server
*server
= NFS_SERVER(inode
);
6254 struct rpc_clnt
*clnt
= server
->client
;
6256 [0] = FATTR4_WORD0_FSID
| FATTR4_WORD0_FS_LOCATIONS
,
6258 struct nfs4_fs_locations_arg args
= {
6259 .clientid
= server
->nfs_client
->cl_clientid
,
6260 .fh
= NFS_FH(inode
),
6263 .migration
= 1, /* skip LOOKUP */
6264 .renew
= 1, /* append RENEW */
6266 struct nfs4_fs_locations_res res
= {
6267 .fs_locations
= locations
,
6271 struct rpc_message msg
= {
6272 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_FS_LOCATIONS
],
6277 unsigned long now
= jiffies
;
6280 nfs_fattr_init(&locations
->fattr
);
6281 locations
->server
= server
;
6282 locations
->nlocations
= 0;
6284 nfs4_init_sequence(&args
.seq_args
, &res
.seq_res
, 0);
6285 nfs4_set_sequence_privileged(&args
.seq_args
);
6286 status
= nfs4_call_sync_sequence(clnt
, server
, &msg
,
6287 &args
.seq_args
, &res
.seq_res
);
6291 renew_lease(server
, now
);
6295 #ifdef CONFIG_NFS_V4_1
6298 * This operation also signals the server that this client is
6299 * performing migration recovery. The server can stop asserting
6300 * SEQ4_STATUS_LEASE_MOVED for this client. The client ID
6301 * performing this operation is identified in the SEQUENCE
6302 * operation in this compound.
6304 * When the client supports GETATTR(fs_locations_info), it can
6305 * be plumbed in here.
6307 static int _nfs41_proc_get_locations(struct inode
*inode
,
6308 struct nfs4_fs_locations
*locations
,
6309 struct page
*page
, struct rpc_cred
*cred
)
6311 struct nfs_server
*server
= NFS_SERVER(inode
);
6312 struct rpc_clnt
*clnt
= server
->client
;
6314 [0] = FATTR4_WORD0_FSID
| FATTR4_WORD0_FS_LOCATIONS
,
6316 struct nfs4_fs_locations_arg args
= {
6317 .fh
= NFS_FH(inode
),
6320 .migration
= 1, /* skip LOOKUP */
6322 struct nfs4_fs_locations_res res
= {
6323 .fs_locations
= locations
,
6326 struct rpc_message msg
= {
6327 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_FS_LOCATIONS
],
6334 nfs_fattr_init(&locations
->fattr
);
6335 locations
->server
= server
;
6336 locations
->nlocations
= 0;
6338 nfs4_init_sequence(&args
.seq_args
, &res
.seq_res
, 0);
6339 nfs4_set_sequence_privileged(&args
.seq_args
);
6340 status
= nfs4_call_sync_sequence(clnt
, server
, &msg
,
6341 &args
.seq_args
, &res
.seq_res
);
6342 if (status
== NFS4_OK
&&
6343 res
.seq_res
.sr_status_flags
& SEQ4_STATUS_LEASE_MOVED
)
6344 status
= -NFS4ERR_LEASE_MOVED
;
6348 #endif /* CONFIG_NFS_V4_1 */
6351 * nfs4_proc_get_locations - discover locations for a migrated FSID
6352 * @inode: inode on FSID that is migrating
6353 * @locations: result of query
6355 * @cred: credential to use for this operation
6357 * Returns NFS4_OK on success, a negative NFS4ERR status code if the
6358 * operation failed, or a negative errno if a local error occurred.
6360 * On success, "locations" is filled in, but if the server has
6361 * no locations information, NFS_ATTR_FATTR_V4_LOCATIONS is not
6364 * -NFS4ERR_LEASE_MOVED is returned if the server still has leases
6365 * from this client that require migration recovery.
6367 int nfs4_proc_get_locations(struct inode
*inode
,
6368 struct nfs4_fs_locations
*locations
,
6369 struct page
*page
, struct rpc_cred
*cred
)
6371 struct nfs_server
*server
= NFS_SERVER(inode
);
6372 struct nfs_client
*clp
= server
->nfs_client
;
6373 const struct nfs4_mig_recovery_ops
*ops
=
6374 clp
->cl_mvops
->mig_recovery_ops
;
6375 struct nfs4_exception exception
= { };
6378 dprintk("%s: FSID %llx:%llx on \"%s\"\n", __func__
,
6379 (unsigned long long)server
->fsid
.major
,
6380 (unsigned long long)server
->fsid
.minor
,
6382 nfs_display_fhandle(NFS_FH(inode
), __func__
);
6385 status
= ops
->get_locations(inode
, locations
, page
, cred
);
6386 if (status
!= -NFS4ERR_DELAY
)
6388 nfs4_handle_exception(server
, status
, &exception
);
6389 } while (exception
.retry
);
6394 * This operation also signals the server that this client is
6395 * performing "lease moved" recovery. The server can stop
6396 * returning NFS4ERR_LEASE_MOVED to this client. A RENEW operation
6397 * is appended to this compound to identify the client ID which is
6398 * performing recovery.
6400 static int _nfs40_proc_fsid_present(struct inode
*inode
, struct rpc_cred
*cred
)
6402 struct nfs_server
*server
= NFS_SERVER(inode
);
6403 struct nfs_client
*clp
= NFS_SERVER(inode
)->nfs_client
;
6404 struct rpc_clnt
*clnt
= server
->client
;
6405 struct nfs4_fsid_present_arg args
= {
6406 .fh
= NFS_FH(inode
),
6407 .clientid
= clp
->cl_clientid
,
6408 .renew
= 1, /* append RENEW */
6410 struct nfs4_fsid_present_res res
= {
6413 struct rpc_message msg
= {
6414 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_FSID_PRESENT
],
6419 unsigned long now
= jiffies
;
6422 res
.fh
= nfs_alloc_fhandle();
6426 nfs4_init_sequence(&args
.seq_args
, &res
.seq_res
, 0);
6427 nfs4_set_sequence_privileged(&args
.seq_args
);
6428 status
= nfs4_call_sync_sequence(clnt
, server
, &msg
,
6429 &args
.seq_args
, &res
.seq_res
);
6430 nfs_free_fhandle(res
.fh
);
6434 do_renew_lease(clp
, now
);
6438 #ifdef CONFIG_NFS_V4_1
6441 * This operation also signals the server that this client is
6442 * performing "lease moved" recovery. The server can stop asserting
6443 * SEQ4_STATUS_LEASE_MOVED for this client. The client ID performing
6444 * this operation is identified in the SEQUENCE operation in this
6447 static int _nfs41_proc_fsid_present(struct inode
*inode
, struct rpc_cred
*cred
)
6449 struct nfs_server
*server
= NFS_SERVER(inode
);
6450 struct rpc_clnt
*clnt
= server
->client
;
6451 struct nfs4_fsid_present_arg args
= {
6452 .fh
= NFS_FH(inode
),
6454 struct nfs4_fsid_present_res res
= {
6456 struct rpc_message msg
= {
6457 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_FSID_PRESENT
],
6464 res
.fh
= nfs_alloc_fhandle();
6468 nfs4_init_sequence(&args
.seq_args
, &res
.seq_res
, 0);
6469 nfs4_set_sequence_privileged(&args
.seq_args
);
6470 status
= nfs4_call_sync_sequence(clnt
, server
, &msg
,
6471 &args
.seq_args
, &res
.seq_res
);
6472 nfs_free_fhandle(res
.fh
);
6473 if (status
== NFS4_OK
&&
6474 res
.seq_res
.sr_status_flags
& SEQ4_STATUS_LEASE_MOVED
)
6475 status
= -NFS4ERR_LEASE_MOVED
;
6479 #endif /* CONFIG_NFS_V4_1 */
6482 * nfs4_proc_fsid_present - Is this FSID present or absent on server?
6483 * @inode: inode on FSID to check
6484 * @cred: credential to use for this operation
6486 * Server indicates whether the FSID is present, moved, or not
6487 * recognized. This operation is necessary to clear a LEASE_MOVED
6488 * condition for this client ID.
6490 * Returns NFS4_OK if the FSID is present on this server,
6491 * -NFS4ERR_MOVED if the FSID is no longer present, a negative
6492 * NFS4ERR code if some error occurred on the server, or a
6493 * negative errno if a local failure occurred.
6495 int nfs4_proc_fsid_present(struct inode
*inode
, struct rpc_cred
*cred
)
6497 struct nfs_server
*server
= NFS_SERVER(inode
);
6498 struct nfs_client
*clp
= server
->nfs_client
;
6499 const struct nfs4_mig_recovery_ops
*ops
=
6500 clp
->cl_mvops
->mig_recovery_ops
;
6501 struct nfs4_exception exception
= { };
6504 dprintk("%s: FSID %llx:%llx on \"%s\"\n", __func__
,
6505 (unsigned long long)server
->fsid
.major
,
6506 (unsigned long long)server
->fsid
.minor
,
6508 nfs_display_fhandle(NFS_FH(inode
), __func__
);
6511 status
= ops
->fsid_present(inode
, cred
);
6512 if (status
!= -NFS4ERR_DELAY
)
6514 nfs4_handle_exception(server
, status
, &exception
);
6515 } while (exception
.retry
);
6520 * If 'use_integrity' is true and the state managment nfs_client
6521 * cl_rpcclient is using krb5i/p, use the integrity protected cl_rpcclient
6522 * and the machine credential as per RFC3530bis and RFC5661 Security
6523 * Considerations sections. Otherwise, just use the user cred with the
6524 * filesystem's rpc_client.
6526 static int _nfs4_proc_secinfo(struct inode
*dir
, const struct qstr
*name
, struct nfs4_secinfo_flavors
*flavors
, bool use_integrity
)
6529 struct nfs4_secinfo_arg args
= {
6530 .dir_fh
= NFS_FH(dir
),
6533 struct nfs4_secinfo_res res
= {
6536 struct rpc_message msg
= {
6537 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SECINFO
],
6541 struct rpc_clnt
*clnt
= NFS_SERVER(dir
)->client
;
6542 struct rpc_cred
*cred
= NULL
;
6544 if (use_integrity
) {
6545 clnt
= NFS_SERVER(dir
)->nfs_client
->cl_rpcclient
;
6546 cred
= nfs4_get_clid_cred(NFS_SERVER(dir
)->nfs_client
);
6547 msg
.rpc_cred
= cred
;
6550 dprintk("NFS call secinfo %s\n", name
->name
);
6552 nfs4_state_protect(NFS_SERVER(dir
)->nfs_client
,
6553 NFS_SP4_MACH_CRED_SECINFO
, &clnt
, &msg
);
6555 status
= nfs4_call_sync(clnt
, NFS_SERVER(dir
), &msg
, &args
.seq_args
,
6557 dprintk("NFS reply secinfo: %d\n", status
);
6565 int nfs4_proc_secinfo(struct inode
*dir
, const struct qstr
*name
,
6566 struct nfs4_secinfo_flavors
*flavors
)
6568 struct nfs4_exception exception
= { };
6571 err
= -NFS4ERR_WRONGSEC
;
6573 /* try to use integrity protection with machine cred */
6574 if (_nfs4_is_integrity_protected(NFS_SERVER(dir
)->nfs_client
))
6575 err
= _nfs4_proc_secinfo(dir
, name
, flavors
, true);
6578 * if unable to use integrity protection, or SECINFO with
6579 * integrity protection returns NFS4ERR_WRONGSEC (which is
6580 * disallowed by spec, but exists in deployed servers) use
6581 * the current filesystem's rpc_client and the user cred.
6583 if (err
== -NFS4ERR_WRONGSEC
)
6584 err
= _nfs4_proc_secinfo(dir
, name
, flavors
, false);
6586 trace_nfs4_secinfo(dir
, name
, err
);
6587 err
= nfs4_handle_exception(NFS_SERVER(dir
), err
,
6589 } while (exception
.retry
);
6593 #ifdef CONFIG_NFS_V4_1
6595 * Check the exchange flags returned by the server for invalid flags, having
6596 * both PNFS and NON_PNFS flags set, and not having one of NON_PNFS, PNFS, or
6599 static int nfs4_check_cl_exchange_flags(u32 flags
)
6601 if (flags
& ~EXCHGID4_FLAG_MASK_R
)
6603 if ((flags
& EXCHGID4_FLAG_USE_PNFS_MDS
) &&
6604 (flags
& EXCHGID4_FLAG_USE_NON_PNFS
))
6606 if (!(flags
& (EXCHGID4_FLAG_MASK_PNFS
)))
6610 return -NFS4ERR_INVAL
;
6614 nfs41_same_server_scope(struct nfs41_server_scope
*a
,
6615 struct nfs41_server_scope
*b
)
6617 if (a
->server_scope_sz
== b
->server_scope_sz
&&
6618 memcmp(a
->server_scope
, b
->server_scope
, a
->server_scope_sz
) == 0)
6625 * nfs4_proc_bind_conn_to_session()
6627 * The 4.1 client currently uses the same TCP connection for the
6628 * fore and backchannel.
6630 int nfs4_proc_bind_conn_to_session(struct nfs_client
*clp
, struct rpc_cred
*cred
)
6633 struct nfs41_bind_conn_to_session_res res
;
6634 struct rpc_message msg
= {
6636 &nfs4_procedures
[NFSPROC4_CLNT_BIND_CONN_TO_SESSION
],
6642 dprintk("--> %s\n", __func__
);
6644 res
.session
= kzalloc(sizeof(struct nfs4_session
), GFP_NOFS
);
6645 if (unlikely(res
.session
== NULL
)) {
6650 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
6651 trace_nfs4_bind_conn_to_session(clp
, status
);
6653 if (memcmp(res
.session
->sess_id
.data
,
6654 clp
->cl_session
->sess_id
.data
, NFS4_MAX_SESSIONID_LEN
)) {
6655 dprintk("NFS: %s: Session ID mismatch\n", __func__
);
6659 if (res
.dir
!= NFS4_CDFS4_BOTH
) {
6660 dprintk("NFS: %s: Unexpected direction from server\n",
6665 if (res
.use_conn_in_rdma_mode
) {
6666 dprintk("NFS: %s: Server returned RDMA mode = true\n",
6675 dprintk("<-- %s status= %d\n", __func__
, status
);
6680 * Minimum set of SP4_MACH_CRED operations from RFC 5661 in the enforce map
6681 * and operations we'd like to see to enable certain features in the allow map
6683 static const struct nfs41_state_protection nfs4_sp4_mach_cred_request
= {
6684 .how
= SP4_MACH_CRED
,
6685 .enforce
.u
.words
= {
6686 [1] = 1 << (OP_BIND_CONN_TO_SESSION
- 32) |
6687 1 << (OP_EXCHANGE_ID
- 32) |
6688 1 << (OP_CREATE_SESSION
- 32) |
6689 1 << (OP_DESTROY_SESSION
- 32) |
6690 1 << (OP_DESTROY_CLIENTID
- 32)
6693 [0] = 1 << (OP_CLOSE
) |
6696 [1] = 1 << (OP_SECINFO
- 32) |
6697 1 << (OP_SECINFO_NO_NAME
- 32) |
6698 1 << (OP_TEST_STATEID
- 32) |
6699 1 << (OP_FREE_STATEID
- 32) |
6700 1 << (OP_WRITE
- 32)
6705 * Select the state protection mode for client `clp' given the server results
6706 * from exchange_id in `sp'.
6708 * Returns 0 on success, negative errno otherwise.
6710 static int nfs4_sp4_select_mode(struct nfs_client
*clp
,
6711 struct nfs41_state_protection
*sp
)
6713 static const u32 supported_enforce
[NFS4_OP_MAP_NUM_WORDS
] = {
6714 [1] = 1 << (OP_BIND_CONN_TO_SESSION
- 32) |
6715 1 << (OP_EXCHANGE_ID
- 32) |
6716 1 << (OP_CREATE_SESSION
- 32) |
6717 1 << (OP_DESTROY_SESSION
- 32) |
6718 1 << (OP_DESTROY_CLIENTID
- 32)
6722 if (sp
->how
== SP4_MACH_CRED
) {
6723 /* Print state protect result */
6724 dfprintk(MOUNT
, "Server SP4_MACH_CRED support:\n");
6725 for (i
= 0; i
<= LAST_NFS4_OP
; i
++) {
6726 if (test_bit(i
, sp
->enforce
.u
.longs
))
6727 dfprintk(MOUNT
, " enforce op %d\n", i
);
6728 if (test_bit(i
, sp
->allow
.u
.longs
))
6729 dfprintk(MOUNT
, " allow op %d\n", i
);
6732 /* make sure nothing is on enforce list that isn't supported */
6733 for (i
= 0; i
< NFS4_OP_MAP_NUM_WORDS
; i
++) {
6734 if (sp
->enforce
.u
.words
[i
] & ~supported_enforce
[i
]) {
6735 dfprintk(MOUNT
, "sp4_mach_cred: disabled\n");
6741 * Minimal mode - state operations are allowed to use machine
6742 * credential. Note this already happens by default, so the
6743 * client doesn't have to do anything more than the negotiation.
6745 * NOTE: we don't care if EXCHANGE_ID is in the list -
6746 * we're already using the machine cred for exchange_id
6747 * and will never use a different cred.
6749 if (test_bit(OP_BIND_CONN_TO_SESSION
, sp
->enforce
.u
.longs
) &&
6750 test_bit(OP_CREATE_SESSION
, sp
->enforce
.u
.longs
) &&
6751 test_bit(OP_DESTROY_SESSION
, sp
->enforce
.u
.longs
) &&
6752 test_bit(OP_DESTROY_CLIENTID
, sp
->enforce
.u
.longs
)) {
6753 dfprintk(MOUNT
, "sp4_mach_cred:\n");
6754 dfprintk(MOUNT
, " minimal mode enabled\n");
6755 set_bit(NFS_SP4_MACH_CRED_MINIMAL
, &clp
->cl_sp4_flags
);
6757 dfprintk(MOUNT
, "sp4_mach_cred: disabled\n");
6761 if (test_bit(OP_CLOSE
, sp
->allow
.u
.longs
) &&
6762 test_bit(OP_LOCKU
, sp
->allow
.u
.longs
)) {
6763 dfprintk(MOUNT
, " cleanup mode enabled\n");
6764 set_bit(NFS_SP4_MACH_CRED_CLEANUP
, &clp
->cl_sp4_flags
);
6767 if (test_bit(OP_SECINFO
, sp
->allow
.u
.longs
) &&
6768 test_bit(OP_SECINFO_NO_NAME
, sp
->allow
.u
.longs
)) {
6769 dfprintk(MOUNT
, " secinfo mode enabled\n");
6770 set_bit(NFS_SP4_MACH_CRED_SECINFO
, &clp
->cl_sp4_flags
);
6773 if (test_bit(OP_TEST_STATEID
, sp
->allow
.u
.longs
) &&
6774 test_bit(OP_FREE_STATEID
, sp
->allow
.u
.longs
)) {
6775 dfprintk(MOUNT
, " stateid mode enabled\n");
6776 set_bit(NFS_SP4_MACH_CRED_STATEID
, &clp
->cl_sp4_flags
);
6779 if (test_bit(OP_WRITE
, sp
->allow
.u
.longs
)) {
6780 dfprintk(MOUNT
, " write mode enabled\n");
6781 set_bit(NFS_SP4_MACH_CRED_WRITE
, &clp
->cl_sp4_flags
);
6784 if (test_bit(OP_COMMIT
, sp
->allow
.u
.longs
)) {
6785 dfprintk(MOUNT
, " commit mode enabled\n");
6786 set_bit(NFS_SP4_MACH_CRED_COMMIT
, &clp
->cl_sp4_flags
);
6794 * _nfs4_proc_exchange_id()
6796 * Wrapper for EXCHANGE_ID operation.
6798 static int _nfs4_proc_exchange_id(struct nfs_client
*clp
, struct rpc_cred
*cred
,
6801 nfs4_verifier verifier
;
6802 struct nfs41_exchange_id_args args
= {
6803 .verifier
= &verifier
,
6805 #ifdef CONFIG_NFS_V4_1_MIGRATION
6806 .flags
= EXCHGID4_FLAG_SUPP_MOVED_REFER
|
6807 EXCHGID4_FLAG_BIND_PRINC_STATEID
|
6808 EXCHGID4_FLAG_SUPP_MOVED_MIGR
,
6810 .flags
= EXCHGID4_FLAG_SUPP_MOVED_REFER
|
6811 EXCHGID4_FLAG_BIND_PRINC_STATEID
,
6814 struct nfs41_exchange_id_res res
= {
6818 struct rpc_message msg
= {
6819 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_EXCHANGE_ID
],
6825 nfs4_init_boot_verifier(clp
, &verifier
);
6826 args
.id_len
= nfs4_init_uniform_client_string(clp
, args
.id
,
6828 dprintk("NFS call exchange_id auth=%s, '%.*s'\n",
6829 clp
->cl_rpcclient
->cl_auth
->au_ops
->au_name
,
6830 args
.id_len
, args
.id
);
6832 res
.server_owner
= kzalloc(sizeof(struct nfs41_server_owner
),
6834 if (unlikely(res
.server_owner
== NULL
)) {
6839 res
.server_scope
= kzalloc(sizeof(struct nfs41_server_scope
),
6841 if (unlikely(res
.server_scope
== NULL
)) {
6843 goto out_server_owner
;
6846 res
.impl_id
= kzalloc(sizeof(struct nfs41_impl_id
), GFP_NOFS
);
6847 if (unlikely(res
.impl_id
== NULL
)) {
6849 goto out_server_scope
;
6854 args
.state_protect
.how
= SP4_NONE
;
6858 args
.state_protect
= nfs4_sp4_mach_cred_request
;
6865 goto out_server_scope
;
6868 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
6869 trace_nfs4_exchange_id(clp
, status
);
6871 status
= nfs4_check_cl_exchange_flags(res
.flags
);
6874 status
= nfs4_sp4_select_mode(clp
, &res
.state_protect
);
6877 clp
->cl_clientid
= res
.clientid
;
6878 clp
->cl_exchange_flags
= (res
.flags
& ~EXCHGID4_FLAG_CONFIRMED_R
);
6879 if (!(res
.flags
& EXCHGID4_FLAG_CONFIRMED_R
))
6880 clp
->cl_seqid
= res
.seqid
;
6882 kfree(clp
->cl_serverowner
);
6883 clp
->cl_serverowner
= res
.server_owner
;
6884 res
.server_owner
= NULL
;
6886 /* use the most recent implementation id */
6887 kfree(clp
->cl_implid
);
6888 clp
->cl_implid
= res
.impl_id
;
6890 if (clp
->cl_serverscope
!= NULL
&&
6891 !nfs41_same_server_scope(clp
->cl_serverscope
,
6892 res
.server_scope
)) {
6893 dprintk("%s: server_scope mismatch detected\n",
6895 set_bit(NFS4CLNT_SERVER_SCOPE_MISMATCH
, &clp
->cl_state
);
6896 kfree(clp
->cl_serverscope
);
6897 clp
->cl_serverscope
= NULL
;
6900 if (clp
->cl_serverscope
== NULL
) {
6901 clp
->cl_serverscope
= res
.server_scope
;
6908 kfree(res
.server_owner
);
6910 kfree(res
.server_scope
);
6912 if (clp
->cl_implid
!= NULL
)
6913 dprintk("NFS reply exchange_id: Server Implementation ID: "
6914 "domain: %s, name: %s, date: %llu,%u\n",
6915 clp
->cl_implid
->domain
, clp
->cl_implid
->name
,
6916 clp
->cl_implid
->date
.seconds
,
6917 clp
->cl_implid
->date
.nseconds
);
6918 dprintk("NFS reply exchange_id: %d\n", status
);
6923 * nfs4_proc_exchange_id()
6925 * Returns zero, a negative errno, or a negative NFS4ERR status code.
6927 * Since the clientid has expired, all compounds using sessions
6928 * associated with the stale clientid will be returning
6929 * NFS4ERR_BADSESSION in the sequence operation, and will therefore
6930 * be in some phase of session reset.
6932 * Will attempt to negotiate SP4_MACH_CRED if krb5i / krb5p auth is used.
6934 int nfs4_proc_exchange_id(struct nfs_client
*clp
, struct rpc_cred
*cred
)
6936 rpc_authflavor_t authflavor
= clp
->cl_rpcclient
->cl_auth
->au_flavor
;
6939 /* try SP4_MACH_CRED if krb5i/p */
6940 if (authflavor
== RPC_AUTH_GSS_KRB5I
||
6941 authflavor
== RPC_AUTH_GSS_KRB5P
) {
6942 status
= _nfs4_proc_exchange_id(clp
, cred
, SP4_MACH_CRED
);
6948 return _nfs4_proc_exchange_id(clp
, cred
, SP4_NONE
);
6951 static int _nfs4_proc_destroy_clientid(struct nfs_client
*clp
,
6952 struct rpc_cred
*cred
)
6954 struct rpc_message msg
= {
6955 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_DESTROY_CLIENTID
],
6961 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
6962 trace_nfs4_destroy_clientid(clp
, status
);
6964 dprintk("NFS: Got error %d from the server %s on "
6965 "DESTROY_CLIENTID.", status
, clp
->cl_hostname
);
6969 static int nfs4_proc_destroy_clientid(struct nfs_client
*clp
,
6970 struct rpc_cred
*cred
)
6975 for (loop
= NFS4_MAX_LOOP_ON_RECOVER
; loop
!= 0; loop
--) {
6976 ret
= _nfs4_proc_destroy_clientid(clp
, cred
);
6978 case -NFS4ERR_DELAY
:
6979 case -NFS4ERR_CLIENTID_BUSY
:
6989 int nfs4_destroy_clientid(struct nfs_client
*clp
)
6991 struct rpc_cred
*cred
;
6994 if (clp
->cl_mvops
->minor_version
< 1)
6996 if (clp
->cl_exchange_flags
== 0)
6998 if (clp
->cl_preserve_clid
)
7000 cred
= nfs4_get_clid_cred(clp
);
7001 ret
= nfs4_proc_destroy_clientid(clp
, cred
);
7006 case -NFS4ERR_STALE_CLIENTID
:
7007 clp
->cl_exchange_flags
= 0;
7013 struct nfs4_get_lease_time_data
{
7014 struct nfs4_get_lease_time_args
*args
;
7015 struct nfs4_get_lease_time_res
*res
;
7016 struct nfs_client
*clp
;
7019 static void nfs4_get_lease_time_prepare(struct rpc_task
*task
,
7022 struct nfs4_get_lease_time_data
*data
=
7023 (struct nfs4_get_lease_time_data
*)calldata
;
7025 dprintk("--> %s\n", __func__
);
7026 /* just setup sequence, do not trigger session recovery
7027 since we're invoked within one */
7028 nfs41_setup_sequence(data
->clp
->cl_session
,
7029 &data
->args
->la_seq_args
,
7030 &data
->res
->lr_seq_res
,
7032 dprintk("<-- %s\n", __func__
);
7036 * Called from nfs4_state_manager thread for session setup, so don't recover
7037 * from sequence operation or clientid errors.
7039 static void nfs4_get_lease_time_done(struct rpc_task
*task
, void *calldata
)
7041 struct nfs4_get_lease_time_data
*data
=
7042 (struct nfs4_get_lease_time_data
*)calldata
;
7044 dprintk("--> %s\n", __func__
);
7045 if (!nfs41_sequence_done(task
, &data
->res
->lr_seq_res
))
7047 switch (task
->tk_status
) {
7048 case -NFS4ERR_DELAY
:
7049 case -NFS4ERR_GRACE
:
7050 dprintk("%s Retry: tk_status %d\n", __func__
, task
->tk_status
);
7051 rpc_delay(task
, NFS4_POLL_RETRY_MIN
);
7052 task
->tk_status
= 0;
7054 case -NFS4ERR_RETRY_UNCACHED_REP
:
7055 rpc_restart_call_prepare(task
);
7058 dprintk("<-- %s\n", __func__
);
7061 static const struct rpc_call_ops nfs4_get_lease_time_ops
= {
7062 .rpc_call_prepare
= nfs4_get_lease_time_prepare
,
7063 .rpc_call_done
= nfs4_get_lease_time_done
,
7066 int nfs4_proc_get_lease_time(struct nfs_client
*clp
, struct nfs_fsinfo
*fsinfo
)
7068 struct rpc_task
*task
;
7069 struct nfs4_get_lease_time_args args
;
7070 struct nfs4_get_lease_time_res res
= {
7071 .lr_fsinfo
= fsinfo
,
7073 struct nfs4_get_lease_time_data data
= {
7078 struct rpc_message msg
= {
7079 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GET_LEASE_TIME
],
7083 struct rpc_task_setup task_setup
= {
7084 .rpc_client
= clp
->cl_rpcclient
,
7085 .rpc_message
= &msg
,
7086 .callback_ops
= &nfs4_get_lease_time_ops
,
7087 .callback_data
= &data
,
7088 .flags
= RPC_TASK_TIMEOUT
,
7092 nfs4_init_sequence(&args
.la_seq_args
, &res
.lr_seq_res
, 0);
7093 nfs4_set_sequence_privileged(&args
.la_seq_args
);
7094 dprintk("--> %s\n", __func__
);
7095 task
= rpc_run_task(&task_setup
);
7098 status
= PTR_ERR(task
);
7100 status
= task
->tk_status
;
7103 dprintk("<-- %s return %d\n", __func__
, status
);
7109 * Initialize the values to be used by the client in CREATE_SESSION
7110 * If nfs4_init_session set the fore channel request and response sizes,
7113 * Set the back channel max_resp_sz_cached to zero to force the client to
7114 * always set csa_cachethis to FALSE because the current implementation
7115 * of the back channel DRC only supports caching the CB_SEQUENCE operation.
7117 static void nfs4_init_channel_attrs(struct nfs41_create_session_args
*args
)
7119 unsigned int max_rqst_sz
, max_resp_sz
;
7121 max_rqst_sz
= NFS_MAX_FILE_IO_SIZE
+ nfs41_maxwrite_overhead
;
7122 max_resp_sz
= NFS_MAX_FILE_IO_SIZE
+ nfs41_maxread_overhead
;
7124 /* Fore channel attributes */
7125 args
->fc_attrs
.max_rqst_sz
= max_rqst_sz
;
7126 args
->fc_attrs
.max_resp_sz
= max_resp_sz
;
7127 args
->fc_attrs
.max_ops
= NFS4_MAX_OPS
;
7128 args
->fc_attrs
.max_reqs
= max_session_slots
;
7130 dprintk("%s: Fore Channel : max_rqst_sz=%u max_resp_sz=%u "
7131 "max_ops=%u max_reqs=%u\n",
7133 args
->fc_attrs
.max_rqst_sz
, args
->fc_attrs
.max_resp_sz
,
7134 args
->fc_attrs
.max_ops
, args
->fc_attrs
.max_reqs
);
7136 /* Back channel attributes */
7137 args
->bc_attrs
.max_rqst_sz
= PAGE_SIZE
;
7138 args
->bc_attrs
.max_resp_sz
= PAGE_SIZE
;
7139 args
->bc_attrs
.max_resp_sz_cached
= 0;
7140 args
->bc_attrs
.max_ops
= NFS4_MAX_BACK_CHANNEL_OPS
;
7141 args
->bc_attrs
.max_reqs
= 1;
7143 dprintk("%s: Back Channel : max_rqst_sz=%u max_resp_sz=%u "
7144 "max_resp_sz_cached=%u max_ops=%u max_reqs=%u\n",
7146 args
->bc_attrs
.max_rqst_sz
, args
->bc_attrs
.max_resp_sz
,
7147 args
->bc_attrs
.max_resp_sz_cached
, args
->bc_attrs
.max_ops
,
7148 args
->bc_attrs
.max_reqs
);
7151 static int nfs4_verify_fore_channel_attrs(struct nfs41_create_session_args
*args
, struct nfs4_session
*session
)
7153 struct nfs4_channel_attrs
*sent
= &args
->fc_attrs
;
7154 struct nfs4_channel_attrs
*rcvd
= &session
->fc_attrs
;
7156 if (rcvd
->max_resp_sz
> sent
->max_resp_sz
)
7159 * Our requested max_ops is the minimum we need; we're not
7160 * prepared to break up compounds into smaller pieces than that.
7161 * So, no point even trying to continue if the server won't
7164 if (rcvd
->max_ops
< sent
->max_ops
)
7166 if (rcvd
->max_reqs
== 0)
7168 if (rcvd
->max_reqs
> NFS4_MAX_SLOT_TABLE
)
7169 rcvd
->max_reqs
= NFS4_MAX_SLOT_TABLE
;
7173 static int nfs4_verify_back_channel_attrs(struct nfs41_create_session_args
*args
, struct nfs4_session
*session
)
7175 struct nfs4_channel_attrs
*sent
= &args
->bc_attrs
;
7176 struct nfs4_channel_attrs
*rcvd
= &session
->bc_attrs
;
7178 if (rcvd
->max_rqst_sz
> sent
->max_rqst_sz
)
7180 if (rcvd
->max_resp_sz
< sent
->max_resp_sz
)
7182 if (rcvd
->max_resp_sz_cached
> sent
->max_resp_sz_cached
)
7184 /* These would render the backchannel useless: */
7185 if (rcvd
->max_ops
!= sent
->max_ops
)
7187 if (rcvd
->max_reqs
!= sent
->max_reqs
)
7192 static int nfs4_verify_channel_attrs(struct nfs41_create_session_args
*args
,
7193 struct nfs4_session
*session
)
7197 ret
= nfs4_verify_fore_channel_attrs(args
, session
);
7200 return nfs4_verify_back_channel_attrs(args
, session
);
7203 static int _nfs4_proc_create_session(struct nfs_client
*clp
,
7204 struct rpc_cred
*cred
)
7206 struct nfs4_session
*session
= clp
->cl_session
;
7207 struct nfs41_create_session_args args
= {
7209 .cb_program
= NFS4_CALLBACK
,
7211 struct nfs41_create_session_res res
= {
7214 struct rpc_message msg
= {
7215 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_CREATE_SESSION
],
7222 nfs4_init_channel_attrs(&args
);
7223 args
.flags
= (SESSION4_PERSIST
| SESSION4_BACK_CHAN
);
7225 status
= rpc_call_sync(session
->clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
7226 trace_nfs4_create_session(clp
, status
);
7229 /* Verify the session's negotiated channel_attrs values */
7230 status
= nfs4_verify_channel_attrs(&args
, session
);
7231 /* Increment the clientid slot sequence id */
7239 * Issues a CREATE_SESSION operation to the server.
7240 * It is the responsibility of the caller to verify the session is
7241 * expired before calling this routine.
7243 int nfs4_proc_create_session(struct nfs_client
*clp
, struct rpc_cred
*cred
)
7247 struct nfs4_session
*session
= clp
->cl_session
;
7249 dprintk("--> %s clp=%p session=%p\n", __func__
, clp
, session
);
7251 status
= _nfs4_proc_create_session(clp
, cred
);
7255 /* Init or reset the session slot tables */
7256 status
= nfs4_setup_session_slot_tables(session
);
7257 dprintk("slot table setup returned %d\n", status
);
7261 ptr
= (unsigned *)&session
->sess_id
.data
[0];
7262 dprintk("%s client>seqid %d sessionid %u:%u:%u:%u\n", __func__
,
7263 clp
->cl_seqid
, ptr
[0], ptr
[1], ptr
[2], ptr
[3]);
7265 dprintk("<-- %s\n", __func__
);
7270 * Issue the over-the-wire RPC DESTROY_SESSION.
7271 * The caller must serialize access to this routine.
7273 int nfs4_proc_destroy_session(struct nfs4_session
*session
,
7274 struct rpc_cred
*cred
)
7276 struct rpc_message msg
= {
7277 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_DESTROY_SESSION
],
7278 .rpc_argp
= session
,
7283 dprintk("--> nfs4_proc_destroy_session\n");
7285 /* session is still being setup */
7286 if (session
->clp
->cl_cons_state
!= NFS_CS_READY
)
7289 status
= rpc_call_sync(session
->clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
7290 trace_nfs4_destroy_session(session
->clp
, status
);
7293 dprintk("NFS: Got error %d from the server on DESTROY_SESSION. "
7294 "Session has been destroyed regardless...\n", status
);
7296 dprintk("<-- nfs4_proc_destroy_session\n");
7301 * Renew the cl_session lease.
7303 struct nfs4_sequence_data
{
7304 struct nfs_client
*clp
;
7305 struct nfs4_sequence_args args
;
7306 struct nfs4_sequence_res res
;
7309 static void nfs41_sequence_release(void *data
)
7311 struct nfs4_sequence_data
*calldata
= data
;
7312 struct nfs_client
*clp
= calldata
->clp
;
7314 if (atomic_read(&clp
->cl_count
) > 1)
7315 nfs4_schedule_state_renewal(clp
);
7316 nfs_put_client(clp
);
7320 static int nfs41_sequence_handle_errors(struct rpc_task
*task
, struct nfs_client
*clp
)
7322 switch(task
->tk_status
) {
7323 case -NFS4ERR_DELAY
:
7324 rpc_delay(task
, NFS4_POLL_RETRY_MAX
);
7327 nfs4_schedule_lease_recovery(clp
);
7332 static void nfs41_sequence_call_done(struct rpc_task
*task
, void *data
)
7334 struct nfs4_sequence_data
*calldata
= data
;
7335 struct nfs_client
*clp
= calldata
->clp
;
7337 if (!nfs41_sequence_done(task
, task
->tk_msg
.rpc_resp
))
7340 trace_nfs4_sequence(clp
, task
->tk_status
);
7341 if (task
->tk_status
< 0) {
7342 dprintk("%s ERROR %d\n", __func__
, task
->tk_status
);
7343 if (atomic_read(&clp
->cl_count
) == 1)
7346 if (nfs41_sequence_handle_errors(task
, clp
) == -EAGAIN
) {
7347 rpc_restart_call_prepare(task
);
7351 dprintk("%s rpc_cred %p\n", __func__
, task
->tk_msg
.rpc_cred
);
7353 dprintk("<-- %s\n", __func__
);
7356 static void nfs41_sequence_prepare(struct rpc_task
*task
, void *data
)
7358 struct nfs4_sequence_data
*calldata
= data
;
7359 struct nfs_client
*clp
= calldata
->clp
;
7360 struct nfs4_sequence_args
*args
;
7361 struct nfs4_sequence_res
*res
;
7363 args
= task
->tk_msg
.rpc_argp
;
7364 res
= task
->tk_msg
.rpc_resp
;
7366 nfs41_setup_sequence(clp
->cl_session
, args
, res
, task
);
7369 static const struct rpc_call_ops nfs41_sequence_ops
= {
7370 .rpc_call_done
= nfs41_sequence_call_done
,
7371 .rpc_call_prepare
= nfs41_sequence_prepare
,
7372 .rpc_release
= nfs41_sequence_release
,
7375 static struct rpc_task
*_nfs41_proc_sequence(struct nfs_client
*clp
,
7376 struct rpc_cred
*cred
,
7379 struct nfs4_sequence_data
*calldata
;
7380 struct rpc_message msg
= {
7381 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SEQUENCE
],
7384 struct rpc_task_setup task_setup_data
= {
7385 .rpc_client
= clp
->cl_rpcclient
,
7386 .rpc_message
= &msg
,
7387 .callback_ops
= &nfs41_sequence_ops
,
7388 .flags
= RPC_TASK_ASYNC
| RPC_TASK_TIMEOUT
,
7391 if (!atomic_inc_not_zero(&clp
->cl_count
))
7392 return ERR_PTR(-EIO
);
7393 calldata
= kzalloc(sizeof(*calldata
), GFP_NOFS
);
7394 if (calldata
== NULL
) {
7395 nfs_put_client(clp
);
7396 return ERR_PTR(-ENOMEM
);
7398 nfs4_init_sequence(&calldata
->args
, &calldata
->res
, 0);
7400 nfs4_set_sequence_privileged(&calldata
->args
);
7401 msg
.rpc_argp
= &calldata
->args
;
7402 msg
.rpc_resp
= &calldata
->res
;
7403 calldata
->clp
= clp
;
7404 task_setup_data
.callback_data
= calldata
;
7406 return rpc_run_task(&task_setup_data
);
7409 static int nfs41_proc_async_sequence(struct nfs_client
*clp
, struct rpc_cred
*cred
, unsigned renew_flags
)
7411 struct rpc_task
*task
;
7414 if ((renew_flags
& NFS4_RENEW_TIMEOUT
) == 0)
7416 task
= _nfs41_proc_sequence(clp
, cred
, false);
7418 ret
= PTR_ERR(task
);
7420 rpc_put_task_async(task
);
7421 dprintk("<-- %s status=%d\n", __func__
, ret
);
7425 static int nfs4_proc_sequence(struct nfs_client
*clp
, struct rpc_cred
*cred
)
7427 struct rpc_task
*task
;
7430 task
= _nfs41_proc_sequence(clp
, cred
, true);
7432 ret
= PTR_ERR(task
);
7435 ret
= rpc_wait_for_completion_task(task
);
7437 struct nfs4_sequence_res
*res
= task
->tk_msg
.rpc_resp
;
7439 if (task
->tk_status
== 0)
7440 nfs41_handle_sequence_flag_errors(clp
, res
->sr_status_flags
);
7441 ret
= task
->tk_status
;
7445 dprintk("<-- %s status=%d\n", __func__
, ret
);
7449 struct nfs4_reclaim_complete_data
{
7450 struct nfs_client
*clp
;
7451 struct nfs41_reclaim_complete_args arg
;
7452 struct nfs41_reclaim_complete_res res
;
7455 static void nfs4_reclaim_complete_prepare(struct rpc_task
*task
, void *data
)
7457 struct nfs4_reclaim_complete_data
*calldata
= data
;
7459 nfs41_setup_sequence(calldata
->clp
->cl_session
,
7460 &calldata
->arg
.seq_args
,
7461 &calldata
->res
.seq_res
,
7465 static int nfs41_reclaim_complete_handle_errors(struct rpc_task
*task
, struct nfs_client
*clp
)
7467 switch(task
->tk_status
) {
7469 case -NFS4ERR_COMPLETE_ALREADY
:
7470 case -NFS4ERR_WRONG_CRED
: /* What to do here? */
7472 case -NFS4ERR_DELAY
:
7473 rpc_delay(task
, NFS4_POLL_RETRY_MAX
);
7475 case -NFS4ERR_RETRY_UNCACHED_REP
:
7478 nfs4_schedule_lease_recovery(clp
);
7483 static void nfs4_reclaim_complete_done(struct rpc_task
*task
, void *data
)
7485 struct nfs4_reclaim_complete_data
*calldata
= data
;
7486 struct nfs_client
*clp
= calldata
->clp
;
7487 struct nfs4_sequence_res
*res
= &calldata
->res
.seq_res
;
7489 dprintk("--> %s\n", __func__
);
7490 if (!nfs41_sequence_done(task
, res
))
7493 trace_nfs4_reclaim_complete(clp
, task
->tk_status
);
7494 if (nfs41_reclaim_complete_handle_errors(task
, clp
) == -EAGAIN
) {
7495 rpc_restart_call_prepare(task
);
7498 dprintk("<-- %s\n", __func__
);
7501 static void nfs4_free_reclaim_complete_data(void *data
)
7503 struct nfs4_reclaim_complete_data
*calldata
= data
;
7508 static const struct rpc_call_ops nfs4_reclaim_complete_call_ops
= {
7509 .rpc_call_prepare
= nfs4_reclaim_complete_prepare
,
7510 .rpc_call_done
= nfs4_reclaim_complete_done
,
7511 .rpc_release
= nfs4_free_reclaim_complete_data
,
7515 * Issue a global reclaim complete.
7517 static int nfs41_proc_reclaim_complete(struct nfs_client
*clp
,
7518 struct rpc_cred
*cred
)
7520 struct nfs4_reclaim_complete_data
*calldata
;
7521 struct rpc_task
*task
;
7522 struct rpc_message msg
= {
7523 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RECLAIM_COMPLETE
],
7526 struct rpc_task_setup task_setup_data
= {
7527 .rpc_client
= clp
->cl_rpcclient
,
7528 .rpc_message
= &msg
,
7529 .callback_ops
= &nfs4_reclaim_complete_call_ops
,
7530 .flags
= RPC_TASK_ASYNC
,
7532 int status
= -ENOMEM
;
7534 dprintk("--> %s\n", __func__
);
7535 calldata
= kzalloc(sizeof(*calldata
), GFP_NOFS
);
7536 if (calldata
== NULL
)
7538 calldata
->clp
= clp
;
7539 calldata
->arg
.one_fs
= 0;
7541 nfs4_init_sequence(&calldata
->arg
.seq_args
, &calldata
->res
.seq_res
, 0);
7542 nfs4_set_sequence_privileged(&calldata
->arg
.seq_args
);
7543 msg
.rpc_argp
= &calldata
->arg
;
7544 msg
.rpc_resp
= &calldata
->res
;
7545 task_setup_data
.callback_data
= calldata
;
7546 task
= rpc_run_task(&task_setup_data
);
7548 status
= PTR_ERR(task
);
7551 status
= nfs4_wait_for_completion_rpc_task(task
);
7553 status
= task
->tk_status
;
7557 dprintk("<-- %s status=%d\n", __func__
, status
);
7562 nfs4_layoutget_prepare(struct rpc_task
*task
, void *calldata
)
7564 struct nfs4_layoutget
*lgp
= calldata
;
7565 struct nfs_server
*server
= NFS_SERVER(lgp
->args
.inode
);
7566 struct nfs4_session
*session
= nfs4_get_session(server
);
7568 dprintk("--> %s\n", __func__
);
7569 /* Note the is a race here, where a CB_LAYOUTRECALL can come in
7570 * right now covering the LAYOUTGET we are about to send.
7571 * However, that is not so catastrophic, and there seems
7572 * to be no way to prevent it completely.
7574 if (nfs41_setup_sequence(session
, &lgp
->args
.seq_args
,
7575 &lgp
->res
.seq_res
, task
))
7577 if (pnfs_choose_layoutget_stateid(&lgp
->args
.stateid
,
7578 NFS_I(lgp
->args
.inode
)->layout
,
7579 lgp
->args
.ctx
->state
)) {
7580 rpc_exit(task
, NFS4_OK
);
7584 static void nfs4_layoutget_done(struct rpc_task
*task
, void *calldata
)
7586 struct nfs4_layoutget
*lgp
= calldata
;
7587 struct inode
*inode
= lgp
->args
.inode
;
7588 struct nfs_server
*server
= NFS_SERVER(inode
);
7589 struct pnfs_layout_hdr
*lo
;
7590 struct nfs4_state
*state
= NULL
;
7591 unsigned long timeo
, now
, giveup
;
7593 dprintk("--> %s tk_status => %d\n", __func__
, -task
->tk_status
);
7595 if (!nfs41_sequence_done(task
, &lgp
->res
.seq_res
))
7598 switch (task
->tk_status
) {
7602 * NFS4ERR_LAYOUTTRYLATER is a conflict with another client
7603 * (or clients) writing to the same RAID stripe
7605 case -NFS4ERR_LAYOUTTRYLATER
:
7607 * NFS4ERR_RECALLCONFLICT is when conflict with self (must recall
7608 * existing layout before getting a new one).
7610 case -NFS4ERR_RECALLCONFLICT
:
7611 timeo
= rpc_get_timeout(task
->tk_client
);
7612 giveup
= lgp
->args
.timestamp
+ timeo
;
7614 if (time_after(giveup
, now
)) {
7615 unsigned long delay
;
7618 * - Not less then NFS4_POLL_RETRY_MIN.
7619 * - One last time a jiffie before we give up
7620 * - exponential backoff (time_now minus start_attempt)
7622 delay
= max_t(unsigned long, NFS4_POLL_RETRY_MIN
,
7623 min((giveup
- now
- 1),
7624 now
- lgp
->args
.timestamp
));
7626 dprintk("%s: NFS4ERR_RECALLCONFLICT waiting %lu\n",
7628 rpc_delay(task
, delay
);
7629 task
->tk_status
= 0;
7630 rpc_restart_call_prepare(task
);
7631 goto out
; /* Do not call nfs4_async_handle_error() */
7634 case -NFS4ERR_EXPIRED
:
7635 case -NFS4ERR_BAD_STATEID
:
7636 spin_lock(&inode
->i_lock
);
7637 lo
= NFS_I(inode
)->layout
;
7638 if (!lo
|| list_empty(&lo
->plh_segs
)) {
7639 spin_unlock(&inode
->i_lock
);
7640 /* If the open stateid was bad, then recover it. */
7641 state
= lgp
->args
.ctx
->state
;
7646 * Mark the bad layout state as invalid, then retry
7647 * with the current stateid.
7649 pnfs_mark_matching_lsegs_invalid(lo
, &head
, NULL
);
7650 spin_unlock(&inode
->i_lock
);
7651 pnfs_free_lseg_list(&head
);
7653 task
->tk_status
= 0;
7654 rpc_restart_call_prepare(task
);
7657 if (nfs4_async_handle_error(task
, server
, state
, NULL
) == -EAGAIN
)
7658 rpc_restart_call_prepare(task
);
7660 dprintk("<-- %s\n", __func__
);
7663 static size_t max_response_pages(struct nfs_server
*server
)
7665 u32 max_resp_sz
= server
->nfs_client
->cl_session
->fc_attrs
.max_resp_sz
;
7666 return nfs_page_array_len(0, max_resp_sz
);
7669 static void nfs4_free_pages(struct page
**pages
, size_t size
)
7676 for (i
= 0; i
< size
; i
++) {
7679 __free_page(pages
[i
]);
7684 static struct page
**nfs4_alloc_pages(size_t size
, gfp_t gfp_flags
)
7686 struct page
**pages
;
7689 pages
= kcalloc(size
, sizeof(struct page
*), gfp_flags
);
7691 dprintk("%s: can't alloc array of %zu pages\n", __func__
, size
);
7695 for (i
= 0; i
< size
; i
++) {
7696 pages
[i
] = alloc_page(gfp_flags
);
7698 dprintk("%s: failed to allocate page\n", __func__
);
7699 nfs4_free_pages(pages
, size
);
7707 static void nfs4_layoutget_release(void *calldata
)
7709 struct nfs4_layoutget
*lgp
= calldata
;
7710 struct inode
*inode
= lgp
->args
.inode
;
7711 struct nfs_server
*server
= NFS_SERVER(inode
);
7712 size_t max_pages
= max_response_pages(server
);
7714 dprintk("--> %s\n", __func__
);
7715 nfs4_free_pages(lgp
->args
.layout
.pages
, max_pages
);
7716 pnfs_put_layout_hdr(NFS_I(inode
)->layout
);
7717 put_nfs_open_context(lgp
->args
.ctx
);
7719 dprintk("<-- %s\n", __func__
);
7722 static const struct rpc_call_ops nfs4_layoutget_call_ops
= {
7723 .rpc_call_prepare
= nfs4_layoutget_prepare
,
7724 .rpc_call_done
= nfs4_layoutget_done
,
7725 .rpc_release
= nfs4_layoutget_release
,
7728 struct pnfs_layout_segment
*
7729 nfs4_proc_layoutget(struct nfs4_layoutget
*lgp
, gfp_t gfp_flags
)
7731 struct inode
*inode
= lgp
->args
.inode
;
7732 struct nfs_server
*server
= NFS_SERVER(inode
);
7733 size_t max_pages
= max_response_pages(server
);
7734 struct rpc_task
*task
;
7735 struct rpc_message msg
= {
7736 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LAYOUTGET
],
7737 .rpc_argp
= &lgp
->args
,
7738 .rpc_resp
= &lgp
->res
,
7739 .rpc_cred
= lgp
->cred
,
7741 struct rpc_task_setup task_setup_data
= {
7742 .rpc_client
= server
->client
,
7743 .rpc_message
= &msg
,
7744 .callback_ops
= &nfs4_layoutget_call_ops
,
7745 .callback_data
= lgp
,
7746 .flags
= RPC_TASK_ASYNC
,
7748 struct pnfs_layout_segment
*lseg
= NULL
;
7751 dprintk("--> %s\n", __func__
);
7753 /* nfs4_layoutget_release calls pnfs_put_layout_hdr */
7754 pnfs_get_layout_hdr(NFS_I(inode
)->layout
);
7756 lgp
->args
.layout
.pages
= nfs4_alloc_pages(max_pages
, gfp_flags
);
7757 if (!lgp
->args
.layout
.pages
) {
7758 nfs4_layoutget_release(lgp
);
7759 return ERR_PTR(-ENOMEM
);
7761 lgp
->args
.layout
.pglen
= max_pages
* PAGE_SIZE
;
7762 lgp
->args
.timestamp
= jiffies
;
7764 lgp
->res
.layoutp
= &lgp
->args
.layout
;
7765 lgp
->res
.seq_res
.sr_slot
= NULL
;
7766 nfs4_init_sequence(&lgp
->args
.seq_args
, &lgp
->res
.seq_res
, 0);
7768 task
= rpc_run_task(&task_setup_data
);
7770 return ERR_CAST(task
);
7771 status
= nfs4_wait_for_completion_rpc_task(task
);
7773 status
= task
->tk_status
;
7774 trace_nfs4_layoutget(lgp
->args
.ctx
,
7778 /* if layoutp->len is 0, nfs4_layoutget_prepare called rpc_exit */
7779 if (status
== 0 && lgp
->res
.layoutp
->len
)
7780 lseg
= pnfs_layout_process(lgp
);
7782 dprintk("<-- %s status=%d\n", __func__
, status
);
7784 return ERR_PTR(status
);
7789 nfs4_layoutreturn_prepare(struct rpc_task
*task
, void *calldata
)
7791 struct nfs4_layoutreturn
*lrp
= calldata
;
7793 dprintk("--> %s\n", __func__
);
7794 nfs41_setup_sequence(lrp
->clp
->cl_session
,
7795 &lrp
->args
.seq_args
,
7800 static void nfs4_layoutreturn_done(struct rpc_task
*task
, void *calldata
)
7802 struct nfs4_layoutreturn
*lrp
= calldata
;
7803 struct nfs_server
*server
;
7805 dprintk("--> %s\n", __func__
);
7807 if (!nfs41_sequence_done(task
, &lrp
->res
.seq_res
))
7810 server
= NFS_SERVER(lrp
->args
.inode
);
7811 switch (task
->tk_status
) {
7813 task
->tk_status
= 0;
7816 case -NFS4ERR_DELAY
:
7817 if (nfs4_async_handle_error(task
, server
, NULL
, NULL
) != -EAGAIN
)
7819 rpc_restart_call_prepare(task
);
7822 dprintk("<-- %s\n", __func__
);
7825 static void nfs4_layoutreturn_release(void *calldata
)
7827 struct nfs4_layoutreturn
*lrp
= calldata
;
7828 struct pnfs_layout_hdr
*lo
= lrp
->args
.layout
;
7830 dprintk("--> %s\n", __func__
);
7831 spin_lock(&lo
->plh_inode
->i_lock
);
7832 if (lrp
->res
.lrs_present
)
7833 pnfs_set_layout_stateid(lo
, &lrp
->res
.stateid
, true);
7834 lo
->plh_block_lgets
--;
7835 spin_unlock(&lo
->plh_inode
->i_lock
);
7836 pnfs_put_layout_hdr(lrp
->args
.layout
);
7838 dprintk("<-- %s\n", __func__
);
7841 static const struct rpc_call_ops nfs4_layoutreturn_call_ops
= {
7842 .rpc_call_prepare
= nfs4_layoutreturn_prepare
,
7843 .rpc_call_done
= nfs4_layoutreturn_done
,
7844 .rpc_release
= nfs4_layoutreturn_release
,
7847 int nfs4_proc_layoutreturn(struct nfs4_layoutreturn
*lrp
)
7849 struct rpc_task
*task
;
7850 struct rpc_message msg
= {
7851 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LAYOUTRETURN
],
7852 .rpc_argp
= &lrp
->args
,
7853 .rpc_resp
= &lrp
->res
,
7854 .rpc_cred
= lrp
->cred
,
7856 struct rpc_task_setup task_setup_data
= {
7857 .rpc_client
= NFS_SERVER(lrp
->args
.inode
)->client
,
7858 .rpc_message
= &msg
,
7859 .callback_ops
= &nfs4_layoutreturn_call_ops
,
7860 .callback_data
= lrp
,
7864 dprintk("--> %s\n", __func__
);
7865 nfs4_init_sequence(&lrp
->args
.seq_args
, &lrp
->res
.seq_res
, 1);
7866 task
= rpc_run_task(&task_setup_data
);
7868 return PTR_ERR(task
);
7869 status
= task
->tk_status
;
7870 trace_nfs4_layoutreturn(lrp
->args
.inode
, status
);
7871 dprintk("<-- %s status=%d\n", __func__
, status
);
7877 _nfs4_proc_getdeviceinfo(struct nfs_server
*server
,
7878 struct pnfs_device
*pdev
,
7879 struct rpc_cred
*cred
)
7881 struct nfs4_getdeviceinfo_args args
= {
7884 struct nfs4_getdeviceinfo_res res
= {
7887 struct rpc_message msg
= {
7888 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GETDEVICEINFO
],
7895 dprintk("--> %s\n", __func__
);
7896 status
= nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
7897 dprintk("<-- %s status=%d\n", __func__
, status
);
7902 int nfs4_proc_getdeviceinfo(struct nfs_server
*server
,
7903 struct pnfs_device
*pdev
,
7904 struct rpc_cred
*cred
)
7906 struct nfs4_exception exception
= { };
7910 err
= nfs4_handle_exception(server
,
7911 _nfs4_proc_getdeviceinfo(server
, pdev
, cred
),
7913 } while (exception
.retry
);
7916 EXPORT_SYMBOL_GPL(nfs4_proc_getdeviceinfo
);
7918 static void nfs4_layoutcommit_prepare(struct rpc_task
*task
, void *calldata
)
7920 struct nfs4_layoutcommit_data
*data
= calldata
;
7921 struct nfs_server
*server
= NFS_SERVER(data
->args
.inode
);
7922 struct nfs4_session
*session
= nfs4_get_session(server
);
7924 nfs41_setup_sequence(session
,
7925 &data
->args
.seq_args
,
7931 nfs4_layoutcommit_done(struct rpc_task
*task
, void *calldata
)
7933 struct nfs4_layoutcommit_data
*data
= calldata
;
7934 struct nfs_server
*server
= NFS_SERVER(data
->args
.inode
);
7936 if (!nfs41_sequence_done(task
, &data
->res
.seq_res
))
7939 switch (task
->tk_status
) { /* Just ignore these failures */
7940 case -NFS4ERR_DELEG_REVOKED
: /* layout was recalled */
7941 case -NFS4ERR_BADIOMODE
: /* no IOMODE_RW layout for range */
7942 case -NFS4ERR_BADLAYOUT
: /* no layout */
7943 case -NFS4ERR_GRACE
: /* loca_recalim always false */
7944 task
->tk_status
= 0;
7948 if (nfs4_async_handle_error(task
, server
, NULL
, NULL
) == -EAGAIN
) {
7949 rpc_restart_call_prepare(task
);
7955 static void nfs4_layoutcommit_release(void *calldata
)
7957 struct nfs4_layoutcommit_data
*data
= calldata
;
7959 pnfs_cleanup_layoutcommit(data
);
7960 nfs_post_op_update_inode_force_wcc(data
->args
.inode
,
7962 put_rpccred(data
->cred
);
7966 static const struct rpc_call_ops nfs4_layoutcommit_ops
= {
7967 .rpc_call_prepare
= nfs4_layoutcommit_prepare
,
7968 .rpc_call_done
= nfs4_layoutcommit_done
,
7969 .rpc_release
= nfs4_layoutcommit_release
,
7973 nfs4_proc_layoutcommit(struct nfs4_layoutcommit_data
*data
, bool sync
)
7975 struct rpc_message msg
= {
7976 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LAYOUTCOMMIT
],
7977 .rpc_argp
= &data
->args
,
7978 .rpc_resp
= &data
->res
,
7979 .rpc_cred
= data
->cred
,
7981 struct rpc_task_setup task_setup_data
= {
7982 .task
= &data
->task
,
7983 .rpc_client
= NFS_CLIENT(data
->args
.inode
),
7984 .rpc_message
= &msg
,
7985 .callback_ops
= &nfs4_layoutcommit_ops
,
7986 .callback_data
= data
,
7987 .flags
= RPC_TASK_ASYNC
,
7989 struct rpc_task
*task
;
7992 dprintk("NFS: %4d initiating layoutcommit call. sync %d "
7993 "lbw: %llu inode %lu\n",
7994 data
->task
.tk_pid
, sync
,
7995 data
->args
.lastbytewritten
,
7996 data
->args
.inode
->i_ino
);
7998 nfs4_init_sequence(&data
->args
.seq_args
, &data
->res
.seq_res
, 1);
7999 task
= rpc_run_task(&task_setup_data
);
8001 return PTR_ERR(task
);
8004 status
= nfs4_wait_for_completion_rpc_task(task
);
8007 status
= task
->tk_status
;
8008 trace_nfs4_layoutcommit(data
->args
.inode
, status
);
8010 dprintk("%s: status %d\n", __func__
, status
);
8016 * Use the state managment nfs_client cl_rpcclient, which uses krb5i (if
8017 * possible) as per RFC3530bis and RFC5661 Security Considerations sections
8020 _nfs41_proc_secinfo_no_name(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
8021 struct nfs_fsinfo
*info
,
8022 struct nfs4_secinfo_flavors
*flavors
, bool use_integrity
)
8024 struct nfs41_secinfo_no_name_args args
= {
8025 .style
= SECINFO_STYLE_CURRENT_FH
,
8027 struct nfs4_secinfo_res res
= {
8030 struct rpc_message msg
= {
8031 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SECINFO_NO_NAME
],
8035 struct rpc_clnt
*clnt
= server
->client
;
8036 struct rpc_cred
*cred
= NULL
;
8039 if (use_integrity
) {
8040 clnt
= server
->nfs_client
->cl_rpcclient
;
8041 cred
= nfs4_get_clid_cred(server
->nfs_client
);
8042 msg
.rpc_cred
= cred
;
8045 dprintk("--> %s\n", __func__
);
8046 status
= nfs4_call_sync(clnt
, server
, &msg
, &args
.seq_args
,
8048 dprintk("<-- %s status=%d\n", __func__
, status
);
8057 nfs41_proc_secinfo_no_name(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
8058 struct nfs_fsinfo
*info
, struct nfs4_secinfo_flavors
*flavors
)
8060 struct nfs4_exception exception
= { };
8063 /* first try using integrity protection */
8064 err
= -NFS4ERR_WRONGSEC
;
8066 /* try to use integrity protection with machine cred */
8067 if (_nfs4_is_integrity_protected(server
->nfs_client
))
8068 err
= _nfs41_proc_secinfo_no_name(server
, fhandle
, info
,
8072 * if unable to use integrity protection, or SECINFO with
8073 * integrity protection returns NFS4ERR_WRONGSEC (which is
8074 * disallowed by spec, but exists in deployed servers) use
8075 * the current filesystem's rpc_client and the user cred.
8077 if (err
== -NFS4ERR_WRONGSEC
)
8078 err
= _nfs41_proc_secinfo_no_name(server
, fhandle
, info
,
8083 case -NFS4ERR_WRONGSEC
:
8087 err
= nfs4_handle_exception(server
, err
, &exception
);
8089 } while (exception
.retry
);
8095 nfs41_find_root_sec(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
8096 struct nfs_fsinfo
*info
)
8100 rpc_authflavor_t flavor
= RPC_AUTH_MAXFLAVOR
;
8101 struct nfs4_secinfo_flavors
*flavors
;
8102 struct nfs4_secinfo4
*secinfo
;
8105 page
= alloc_page(GFP_KERNEL
);
8111 flavors
= page_address(page
);
8112 err
= nfs41_proc_secinfo_no_name(server
, fhandle
, info
, flavors
);
8115 * Fall back on "guess and check" method if
8116 * the server doesn't support SECINFO_NO_NAME
8118 if (err
== -NFS4ERR_WRONGSEC
|| err
== -ENOTSUPP
) {
8119 err
= nfs4_find_root_sec(server
, fhandle
, info
);
8125 for (i
= 0; i
< flavors
->num_flavors
; i
++) {
8126 secinfo
= &flavors
->flavors
[i
];
8128 switch (secinfo
->flavor
) {
8132 flavor
= rpcauth_get_pseudoflavor(secinfo
->flavor
,
8133 &secinfo
->flavor_info
);
8136 flavor
= RPC_AUTH_MAXFLAVOR
;
8140 if (!nfs_auth_info_match(&server
->auth_info
, flavor
))
8141 flavor
= RPC_AUTH_MAXFLAVOR
;
8143 if (flavor
!= RPC_AUTH_MAXFLAVOR
) {
8144 err
= nfs4_lookup_root_sec(server
, fhandle
,
8151 if (flavor
== RPC_AUTH_MAXFLAVOR
)
8162 static int _nfs41_test_stateid(struct nfs_server
*server
,
8163 nfs4_stateid
*stateid
,
8164 struct rpc_cred
*cred
)
8167 struct nfs41_test_stateid_args args
= {
8170 struct nfs41_test_stateid_res res
;
8171 struct rpc_message msg
= {
8172 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_TEST_STATEID
],
8177 struct rpc_clnt
*rpc_client
= server
->client
;
8179 nfs4_state_protect(server
->nfs_client
, NFS_SP4_MACH_CRED_STATEID
,
8182 dprintk("NFS call test_stateid %p\n", stateid
);
8183 nfs4_init_sequence(&args
.seq_args
, &res
.seq_res
, 0);
8184 nfs4_set_sequence_privileged(&args
.seq_args
);
8185 status
= nfs4_call_sync_sequence(rpc_client
, server
, &msg
,
8186 &args
.seq_args
, &res
.seq_res
);
8187 if (status
!= NFS_OK
) {
8188 dprintk("NFS reply test_stateid: failed, %d\n", status
);
8191 dprintk("NFS reply test_stateid: succeeded, %d\n", -res
.status
);
8196 * nfs41_test_stateid - perform a TEST_STATEID operation
8198 * @server: server / transport on which to perform the operation
8199 * @stateid: state ID to test
8202 * Returns NFS_OK if the server recognizes that "stateid" is valid.
8203 * Otherwise a negative NFS4ERR value is returned if the operation
8204 * failed or the state ID is not currently valid.
8206 static int nfs41_test_stateid(struct nfs_server
*server
,
8207 nfs4_stateid
*stateid
,
8208 struct rpc_cred
*cred
)
8210 struct nfs4_exception exception
= { };
8213 err
= _nfs41_test_stateid(server
, stateid
, cred
);
8214 if (err
!= -NFS4ERR_DELAY
)
8216 nfs4_handle_exception(server
, err
, &exception
);
8217 } while (exception
.retry
);
8221 struct nfs_free_stateid_data
{
8222 struct nfs_server
*server
;
8223 struct nfs41_free_stateid_args args
;
8224 struct nfs41_free_stateid_res res
;
8227 static void nfs41_free_stateid_prepare(struct rpc_task
*task
, void *calldata
)
8229 struct nfs_free_stateid_data
*data
= calldata
;
8230 nfs41_setup_sequence(nfs4_get_session(data
->server
),
8231 &data
->args
.seq_args
,
8236 static void nfs41_free_stateid_done(struct rpc_task
*task
, void *calldata
)
8238 struct nfs_free_stateid_data
*data
= calldata
;
8240 nfs41_sequence_done(task
, &data
->res
.seq_res
);
8242 switch (task
->tk_status
) {
8243 case -NFS4ERR_DELAY
:
8244 if (nfs4_async_handle_error(task
, data
->server
, NULL
, NULL
) == -EAGAIN
)
8245 rpc_restart_call_prepare(task
);
8249 static void nfs41_free_stateid_release(void *calldata
)
8254 static const struct rpc_call_ops nfs41_free_stateid_ops
= {
8255 .rpc_call_prepare
= nfs41_free_stateid_prepare
,
8256 .rpc_call_done
= nfs41_free_stateid_done
,
8257 .rpc_release
= nfs41_free_stateid_release
,
8260 static struct rpc_task
*_nfs41_free_stateid(struct nfs_server
*server
,
8261 nfs4_stateid
*stateid
,
8262 struct rpc_cred
*cred
,
8265 struct rpc_message msg
= {
8266 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_FREE_STATEID
],
8269 struct rpc_task_setup task_setup
= {
8270 .rpc_client
= server
->client
,
8271 .rpc_message
= &msg
,
8272 .callback_ops
= &nfs41_free_stateid_ops
,
8273 .flags
= RPC_TASK_ASYNC
,
8275 struct nfs_free_stateid_data
*data
;
8277 nfs4_state_protect(server
->nfs_client
, NFS_SP4_MACH_CRED_STATEID
,
8278 &task_setup
.rpc_client
, &msg
);
8280 dprintk("NFS call free_stateid %p\n", stateid
);
8281 data
= kmalloc(sizeof(*data
), GFP_NOFS
);
8283 return ERR_PTR(-ENOMEM
);
8284 data
->server
= server
;
8285 nfs4_stateid_copy(&data
->args
.stateid
, stateid
);
8287 task_setup
.callback_data
= data
;
8289 msg
.rpc_argp
= &data
->args
;
8290 msg
.rpc_resp
= &data
->res
;
8291 nfs4_init_sequence(&data
->args
.seq_args
, &data
->res
.seq_res
, 0);
8293 nfs4_set_sequence_privileged(&data
->args
.seq_args
);
8295 return rpc_run_task(&task_setup
);
8299 * nfs41_free_stateid - perform a FREE_STATEID operation
8301 * @server: server / transport on which to perform the operation
8302 * @stateid: state ID to release
8305 * Returns NFS_OK if the server freed "stateid". Otherwise a
8306 * negative NFS4ERR value is returned.
8308 static int nfs41_free_stateid(struct nfs_server
*server
,
8309 nfs4_stateid
*stateid
,
8310 struct rpc_cred
*cred
)
8312 struct rpc_task
*task
;
8315 task
= _nfs41_free_stateid(server
, stateid
, cred
, true);
8317 return PTR_ERR(task
);
8318 ret
= rpc_wait_for_completion_task(task
);
8320 ret
= task
->tk_status
;
8326 nfs41_free_lock_state(struct nfs_server
*server
, struct nfs4_lock_state
*lsp
)
8328 struct rpc_task
*task
;
8329 struct rpc_cred
*cred
= lsp
->ls_state
->owner
->so_cred
;
8331 task
= _nfs41_free_stateid(server
, &lsp
->ls_stateid
, cred
, false);
8332 nfs4_free_lock_state(server
, lsp
);
8338 static bool nfs41_match_stateid(const nfs4_stateid
*s1
,
8339 const nfs4_stateid
*s2
)
8341 if (memcmp(s1
->other
, s2
->other
, sizeof(s1
->other
)) != 0)
8344 if (s1
->seqid
== s2
->seqid
)
8346 if (s1
->seqid
== 0 || s2
->seqid
== 0)
8352 #endif /* CONFIG_NFS_V4_1 */
8354 static bool nfs4_match_stateid(const nfs4_stateid
*s1
,
8355 const nfs4_stateid
*s2
)
8357 return nfs4_stateid_match(s1
, s2
);
8361 static const struct nfs4_state_recovery_ops nfs40_reboot_recovery_ops
= {
8362 .owner_flag_bit
= NFS_OWNER_RECLAIM_REBOOT
,
8363 .state_flag_bit
= NFS_STATE_RECLAIM_REBOOT
,
8364 .recover_open
= nfs4_open_reclaim
,
8365 .recover_lock
= nfs4_lock_reclaim
,
8366 .establish_clid
= nfs4_init_clientid
,
8367 .detect_trunking
= nfs40_discover_server_trunking
,
8370 #if defined(CONFIG_NFS_V4_1)
8371 static const struct nfs4_state_recovery_ops nfs41_reboot_recovery_ops
= {
8372 .owner_flag_bit
= NFS_OWNER_RECLAIM_REBOOT
,
8373 .state_flag_bit
= NFS_STATE_RECLAIM_REBOOT
,
8374 .recover_open
= nfs4_open_reclaim
,
8375 .recover_lock
= nfs4_lock_reclaim
,
8376 .establish_clid
= nfs41_init_clientid
,
8377 .reclaim_complete
= nfs41_proc_reclaim_complete
,
8378 .detect_trunking
= nfs41_discover_server_trunking
,
8380 #endif /* CONFIG_NFS_V4_1 */
8382 static const struct nfs4_state_recovery_ops nfs40_nograce_recovery_ops
= {
8383 .owner_flag_bit
= NFS_OWNER_RECLAIM_NOGRACE
,
8384 .state_flag_bit
= NFS_STATE_RECLAIM_NOGRACE
,
8385 .recover_open
= nfs40_open_expired
,
8386 .recover_lock
= nfs4_lock_expired
,
8387 .establish_clid
= nfs4_init_clientid
,
8390 #if defined(CONFIG_NFS_V4_1)
8391 static const struct nfs4_state_recovery_ops nfs41_nograce_recovery_ops
= {
8392 .owner_flag_bit
= NFS_OWNER_RECLAIM_NOGRACE
,
8393 .state_flag_bit
= NFS_STATE_RECLAIM_NOGRACE
,
8394 .recover_open
= nfs41_open_expired
,
8395 .recover_lock
= nfs41_lock_expired
,
8396 .establish_clid
= nfs41_init_clientid
,
8398 #endif /* CONFIG_NFS_V4_1 */
8400 static const struct nfs4_state_maintenance_ops nfs40_state_renewal_ops
= {
8401 .sched_state_renewal
= nfs4_proc_async_renew
,
8402 .get_state_renewal_cred_locked
= nfs4_get_renew_cred_locked
,
8403 .renew_lease
= nfs4_proc_renew
,
8406 #if defined(CONFIG_NFS_V4_1)
8407 static const struct nfs4_state_maintenance_ops nfs41_state_renewal_ops
= {
8408 .sched_state_renewal
= nfs41_proc_async_sequence
,
8409 .get_state_renewal_cred_locked
= nfs4_get_machine_cred_locked
,
8410 .renew_lease
= nfs4_proc_sequence
,
8414 static const struct nfs4_mig_recovery_ops nfs40_mig_recovery_ops
= {
8415 .get_locations
= _nfs40_proc_get_locations
,
8416 .fsid_present
= _nfs40_proc_fsid_present
,
8419 #if defined(CONFIG_NFS_V4_1)
8420 static const struct nfs4_mig_recovery_ops nfs41_mig_recovery_ops
= {
8421 .get_locations
= _nfs41_proc_get_locations
,
8422 .fsid_present
= _nfs41_proc_fsid_present
,
8424 #endif /* CONFIG_NFS_V4_1 */
8426 static const struct nfs4_minor_version_ops nfs_v4_0_minor_ops
= {
8428 .init_caps
= NFS_CAP_READDIRPLUS
8429 | NFS_CAP_ATOMIC_OPEN
8430 | NFS_CAP_CHANGE_ATTR
8431 | NFS_CAP_POSIX_LOCK
,
8432 .init_client
= nfs40_init_client
,
8433 .shutdown_client
= nfs40_shutdown_client
,
8434 .match_stateid
= nfs4_match_stateid
,
8435 .find_root_sec
= nfs4_find_root_sec
,
8436 .free_lock_state
= nfs4_release_lockowner
,
8437 .alloc_seqid
= nfs_alloc_seqid
,
8438 .call_sync_ops
= &nfs40_call_sync_ops
,
8439 .reboot_recovery_ops
= &nfs40_reboot_recovery_ops
,
8440 .nograce_recovery_ops
= &nfs40_nograce_recovery_ops
,
8441 .state_renewal_ops
= &nfs40_state_renewal_ops
,
8442 .mig_recovery_ops
= &nfs40_mig_recovery_ops
,
8445 #if defined(CONFIG_NFS_V4_1)
8446 static struct nfs_seqid
*
8447 nfs_alloc_no_seqid(struct nfs_seqid_counter
*arg1
, gfp_t arg2
)
8452 static const struct nfs4_minor_version_ops nfs_v4_1_minor_ops
= {
8454 .init_caps
= NFS_CAP_READDIRPLUS
8455 | NFS_CAP_ATOMIC_OPEN
8456 | NFS_CAP_CHANGE_ATTR
8457 | NFS_CAP_POSIX_LOCK
8458 | NFS_CAP_STATEID_NFSV41
8459 | NFS_CAP_ATOMIC_OPEN_V1
,
8460 .init_client
= nfs41_init_client
,
8461 .shutdown_client
= nfs41_shutdown_client
,
8462 .match_stateid
= nfs41_match_stateid
,
8463 .find_root_sec
= nfs41_find_root_sec
,
8464 .free_lock_state
= nfs41_free_lock_state
,
8465 .alloc_seqid
= nfs_alloc_no_seqid
,
8466 .call_sync_ops
= &nfs41_call_sync_ops
,
8467 .reboot_recovery_ops
= &nfs41_reboot_recovery_ops
,
8468 .nograce_recovery_ops
= &nfs41_nograce_recovery_ops
,
8469 .state_renewal_ops
= &nfs41_state_renewal_ops
,
8470 .mig_recovery_ops
= &nfs41_mig_recovery_ops
,
8474 #if defined(CONFIG_NFS_V4_2)
8475 static const struct nfs4_minor_version_ops nfs_v4_2_minor_ops
= {
8477 .init_caps
= NFS_CAP_READDIRPLUS
8478 | NFS_CAP_ATOMIC_OPEN
8479 | NFS_CAP_CHANGE_ATTR
8480 | NFS_CAP_POSIX_LOCK
8481 | NFS_CAP_STATEID_NFSV41
8482 | NFS_CAP_ATOMIC_OPEN_V1
8484 | NFS_CAP_DEALLOCATE
8486 .init_client
= nfs41_init_client
,
8487 .shutdown_client
= nfs41_shutdown_client
,
8488 .match_stateid
= nfs41_match_stateid
,
8489 .find_root_sec
= nfs41_find_root_sec
,
8490 .free_lock_state
= nfs41_free_lock_state
,
8491 .call_sync_ops
= &nfs41_call_sync_ops
,
8492 .alloc_seqid
= nfs_alloc_no_seqid
,
8493 .reboot_recovery_ops
= &nfs41_reboot_recovery_ops
,
8494 .nograce_recovery_ops
= &nfs41_nograce_recovery_ops
,
8495 .state_renewal_ops
= &nfs41_state_renewal_ops
,
8499 const struct nfs4_minor_version_ops
*nfs_v4_minor_ops
[] = {
8500 [0] = &nfs_v4_0_minor_ops
,
8501 #if defined(CONFIG_NFS_V4_1)
8502 [1] = &nfs_v4_1_minor_ops
,
8504 #if defined(CONFIG_NFS_V4_2)
8505 [2] = &nfs_v4_2_minor_ops
,
8509 static const struct inode_operations nfs4_dir_inode_operations
= {
8510 .create
= nfs_create
,
8511 .lookup
= nfs_lookup
,
8512 .atomic_open
= nfs_atomic_open
,
8514 .unlink
= nfs_unlink
,
8515 .symlink
= nfs_symlink
,
8519 .rename
= nfs_rename
,
8520 .permission
= nfs_permission
,
8521 .getattr
= nfs_getattr
,
8522 .setattr
= nfs_setattr
,
8523 .getxattr
= generic_getxattr
,
8524 .setxattr
= generic_setxattr
,
8525 .listxattr
= generic_listxattr
,
8526 .removexattr
= generic_removexattr
,
8529 static const struct inode_operations nfs4_file_inode_operations
= {
8530 .permission
= nfs_permission
,
8531 .getattr
= nfs_getattr
,
8532 .setattr
= nfs_setattr
,
8533 .getxattr
= generic_getxattr
,
8534 .setxattr
= generic_setxattr
,
8535 .listxattr
= generic_listxattr
,
8536 .removexattr
= generic_removexattr
,
8539 const struct nfs_rpc_ops nfs_v4_clientops
= {
8540 .version
= 4, /* protocol version */
8541 .dentry_ops
= &nfs4_dentry_operations
,
8542 .dir_inode_ops
= &nfs4_dir_inode_operations
,
8543 .file_inode_ops
= &nfs4_file_inode_operations
,
8544 .file_ops
= &nfs4_file_operations
,
8545 .getroot
= nfs4_proc_get_root
,
8546 .submount
= nfs4_submount
,
8547 .try_mount
= nfs4_try_mount
,
8548 .getattr
= nfs4_proc_getattr
,
8549 .setattr
= nfs4_proc_setattr
,
8550 .lookup
= nfs4_proc_lookup
,
8551 .access
= nfs4_proc_access
,
8552 .readlink
= nfs4_proc_readlink
,
8553 .create
= nfs4_proc_create
,
8554 .remove
= nfs4_proc_remove
,
8555 .unlink_setup
= nfs4_proc_unlink_setup
,
8556 .unlink_rpc_prepare
= nfs4_proc_unlink_rpc_prepare
,
8557 .unlink_done
= nfs4_proc_unlink_done
,
8558 .rename_setup
= nfs4_proc_rename_setup
,
8559 .rename_rpc_prepare
= nfs4_proc_rename_rpc_prepare
,
8560 .rename_done
= nfs4_proc_rename_done
,
8561 .link
= nfs4_proc_link
,
8562 .symlink
= nfs4_proc_symlink
,
8563 .mkdir
= nfs4_proc_mkdir
,
8564 .rmdir
= nfs4_proc_remove
,
8565 .readdir
= nfs4_proc_readdir
,
8566 .mknod
= nfs4_proc_mknod
,
8567 .statfs
= nfs4_proc_statfs
,
8568 .fsinfo
= nfs4_proc_fsinfo
,
8569 .pathconf
= nfs4_proc_pathconf
,
8570 .set_capabilities
= nfs4_server_capabilities
,
8571 .decode_dirent
= nfs4_decode_dirent
,
8572 .pgio_rpc_prepare
= nfs4_proc_pgio_rpc_prepare
,
8573 .read_setup
= nfs4_proc_read_setup
,
8574 .read_done
= nfs4_read_done
,
8575 .write_setup
= nfs4_proc_write_setup
,
8576 .write_done
= nfs4_write_done
,
8577 .commit_setup
= nfs4_proc_commit_setup
,
8578 .commit_rpc_prepare
= nfs4_proc_commit_rpc_prepare
,
8579 .commit_done
= nfs4_commit_done
,
8580 .lock
= nfs4_proc_lock
,
8581 .clear_acl_cache
= nfs4_zap_acl_attr
,
8582 .close_context
= nfs4_close_context
,
8583 .open_context
= nfs4_atomic_open
,
8584 .have_delegation
= nfs4_have_delegation
,
8585 .return_delegation
= nfs4_inode_return_delegation
,
8586 .alloc_client
= nfs4_alloc_client
,
8587 .init_client
= nfs4_init_client
,
8588 .free_client
= nfs4_free_client
,
8589 .create_server
= nfs4_create_server
,
8590 .clone_server
= nfs_clone_server
,
8593 static const struct xattr_handler nfs4_xattr_nfs4_acl_handler
= {
8594 .prefix
= XATTR_NAME_NFSV4_ACL
,
8595 .list
= nfs4_xattr_list_nfs4_acl
,
8596 .get
= nfs4_xattr_get_nfs4_acl
,
8597 .set
= nfs4_xattr_set_nfs4_acl
,
8600 const struct xattr_handler
*nfs4_xattr_handlers
[] = {
8601 &nfs4_xattr_nfs4_acl_handler
,
8602 #ifdef CONFIG_NFS_V4_SECURITY_LABEL
8603 &nfs4_xattr_nfs4_label_handler
,