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 int nfs40_setup_sequence(struct nfs4_slot_table
*tbl
,
499 struct nfs4_sequence_args
*args
,
500 struct nfs4_sequence_res
*res
,
501 struct rpc_task
*task
)
503 struct nfs4_slot
*slot
;
505 /* slot already allocated? */
506 if (res
->sr_slot
!= NULL
)
509 spin_lock(&tbl
->slot_tbl_lock
);
510 if (nfs4_slot_tbl_draining(tbl
) && !args
->sa_privileged
)
513 slot
= nfs4_alloc_slot(tbl
);
515 if (slot
== ERR_PTR(-ENOMEM
))
516 task
->tk_timeout
= HZ
>> 2;
519 spin_unlock(&tbl
->slot_tbl_lock
);
521 args
->sa_slot
= slot
;
525 rpc_call_start(task
);
529 if (args
->sa_privileged
)
530 rpc_sleep_on_priority(&tbl
->slot_tbl_waitq
, task
,
531 NULL
, RPC_PRIORITY_PRIVILEGED
);
533 rpc_sleep_on(&tbl
->slot_tbl_waitq
, task
, NULL
);
534 spin_unlock(&tbl
->slot_tbl_lock
);
537 EXPORT_SYMBOL_GPL(nfs40_setup_sequence
);
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 int nfs4_sequence_done(struct rpc_task
*task
, struct nfs4_sequence_res
*res
)
699 if (res
->sr_slot
== NULL
)
701 if (!res
->sr_slot
->table
->session
)
702 return nfs40_sequence_done(task
, res
);
703 return nfs41_sequence_done(task
, res
);
705 EXPORT_SYMBOL_GPL(nfs4_sequence_done
);
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
->nfs_client
->cl_slot_tbl
,
783 dprintk("--> %s clp %p session %p sr_slot %u\n",
784 __func__
, session
->clp
, session
, res
->sr_slot
?
785 res
->sr_slot
->slot_nr
: NFS4_NO_SLOT
);
787 ret
= nfs41_setup_sequence(session
, args
, res
, task
);
789 dprintk("<-- %s status=%d\n", __func__
, ret
);
793 static void nfs41_call_sync_prepare(struct rpc_task
*task
, void *calldata
)
795 struct nfs4_call_sync_data
*data
= calldata
;
796 struct nfs4_session
*session
= nfs4_get_session(data
->seq_server
);
798 dprintk("--> %s data->seq_server %p\n", __func__
, data
->seq_server
);
800 nfs41_setup_sequence(session
, data
->seq_args
, data
->seq_res
, task
);
803 static void nfs41_call_sync_done(struct rpc_task
*task
, void *calldata
)
805 struct nfs4_call_sync_data
*data
= calldata
;
807 nfs41_sequence_done(task
, data
->seq_res
);
810 static const struct rpc_call_ops nfs41_call_sync_ops
= {
811 .rpc_call_prepare
= nfs41_call_sync_prepare
,
812 .rpc_call_done
= nfs41_call_sync_done
,
815 #else /* !CONFIG_NFS_V4_1 */
817 static int nfs4_setup_sequence(const struct nfs_server
*server
,
818 struct nfs4_sequence_args
*args
,
819 struct nfs4_sequence_res
*res
,
820 struct rpc_task
*task
)
822 return nfs40_setup_sequence(server
->nfs_client
->cl_slot_tbl
,
826 int nfs4_sequence_done(struct rpc_task
*task
,
827 struct nfs4_sequence_res
*res
)
829 return nfs40_sequence_done(task
, res
);
831 EXPORT_SYMBOL_GPL(nfs4_sequence_done
);
833 #endif /* !CONFIG_NFS_V4_1 */
835 static void nfs40_call_sync_prepare(struct rpc_task
*task
, void *calldata
)
837 struct nfs4_call_sync_data
*data
= calldata
;
838 nfs4_setup_sequence(data
->seq_server
,
839 data
->seq_args
, data
->seq_res
, task
);
842 static void nfs40_call_sync_done(struct rpc_task
*task
, void *calldata
)
844 struct nfs4_call_sync_data
*data
= calldata
;
845 nfs4_sequence_done(task
, data
->seq_res
);
848 static const struct rpc_call_ops nfs40_call_sync_ops
= {
849 .rpc_call_prepare
= nfs40_call_sync_prepare
,
850 .rpc_call_done
= nfs40_call_sync_done
,
853 static int nfs4_call_sync_sequence(struct rpc_clnt
*clnt
,
854 struct nfs_server
*server
,
855 struct rpc_message
*msg
,
856 struct nfs4_sequence_args
*args
,
857 struct nfs4_sequence_res
*res
)
860 struct rpc_task
*task
;
861 struct nfs_client
*clp
= server
->nfs_client
;
862 struct nfs4_call_sync_data data
= {
863 .seq_server
= server
,
867 struct rpc_task_setup task_setup
= {
870 .callback_ops
= clp
->cl_mvops
->call_sync_ops
,
871 .callback_data
= &data
874 task
= rpc_run_task(&task_setup
);
878 ret
= task
->tk_status
;
884 int nfs4_call_sync(struct rpc_clnt
*clnt
,
885 struct nfs_server
*server
,
886 struct rpc_message
*msg
,
887 struct nfs4_sequence_args
*args
,
888 struct nfs4_sequence_res
*res
,
891 nfs4_init_sequence(args
, res
, cache_reply
);
892 return nfs4_call_sync_sequence(clnt
, server
, msg
, args
, res
);
895 static void update_changeattr(struct inode
*dir
, struct nfs4_change_info
*cinfo
)
897 struct nfs_inode
*nfsi
= NFS_I(dir
);
899 spin_lock(&dir
->i_lock
);
900 nfsi
->cache_validity
|= NFS_INO_INVALID_ATTR
|NFS_INO_INVALID_DATA
;
901 if (!cinfo
->atomic
|| cinfo
->before
!= dir
->i_version
)
902 nfs_force_lookup_revalidate(dir
);
903 dir
->i_version
= cinfo
->after
;
904 nfs_fscache_invalidate(dir
);
905 spin_unlock(&dir
->i_lock
);
908 struct nfs4_opendata
{
910 struct nfs_openargs o_arg
;
911 struct nfs_openres o_res
;
912 struct nfs_open_confirmargs c_arg
;
913 struct nfs_open_confirmres c_res
;
914 struct nfs4_string owner_name
;
915 struct nfs4_string group_name
;
916 struct nfs_fattr f_attr
;
917 struct nfs4_label
*f_label
;
919 struct dentry
*dentry
;
920 struct nfs4_state_owner
*owner
;
921 struct nfs4_state
*state
;
923 unsigned long timestamp
;
924 unsigned int rpc_done
: 1;
925 unsigned int file_created
: 1;
926 unsigned int is_recover
: 1;
931 static bool nfs4_clear_cap_atomic_open_v1(struct nfs_server
*server
,
932 int err
, struct nfs4_exception
*exception
)
936 if (!(server
->caps
& NFS_CAP_ATOMIC_OPEN_V1
))
938 server
->caps
&= ~NFS_CAP_ATOMIC_OPEN_V1
;
939 exception
->retry
= 1;
943 static enum open_claim_type4
944 nfs4_map_atomic_open_claim(struct nfs_server
*server
,
945 enum open_claim_type4 claim
)
947 if (server
->caps
& NFS_CAP_ATOMIC_OPEN_V1
)
952 case NFS4_OPEN_CLAIM_FH
:
953 return NFS4_OPEN_CLAIM_NULL
;
954 case NFS4_OPEN_CLAIM_DELEG_CUR_FH
:
955 return NFS4_OPEN_CLAIM_DELEGATE_CUR
;
956 case NFS4_OPEN_CLAIM_DELEG_PREV_FH
:
957 return NFS4_OPEN_CLAIM_DELEGATE_PREV
;
961 static void nfs4_init_opendata_res(struct nfs4_opendata
*p
)
963 p
->o_res
.f_attr
= &p
->f_attr
;
964 p
->o_res
.f_label
= p
->f_label
;
965 p
->o_res
.seqid
= p
->o_arg
.seqid
;
966 p
->c_res
.seqid
= p
->c_arg
.seqid
;
967 p
->o_res
.server
= p
->o_arg
.server
;
968 p
->o_res
.access_request
= p
->o_arg
.access
;
969 nfs_fattr_init(&p
->f_attr
);
970 nfs_fattr_init_names(&p
->f_attr
, &p
->owner_name
, &p
->group_name
);
973 static struct nfs4_opendata
*nfs4_opendata_alloc(struct dentry
*dentry
,
974 struct nfs4_state_owner
*sp
, fmode_t fmode
, int flags
,
975 const struct iattr
*attrs
,
976 struct nfs4_label
*label
,
977 enum open_claim_type4 claim
,
980 struct dentry
*parent
= dget_parent(dentry
);
981 struct inode
*dir
= parent
->d_inode
;
982 struct nfs_server
*server
= NFS_SERVER(dir
);
983 struct nfs4_opendata
*p
;
985 p
= kzalloc(sizeof(*p
), gfp_mask
);
989 p
->f_label
= nfs4_label_alloc(server
, gfp_mask
);
990 if (IS_ERR(p
->f_label
))
993 p
->o_arg
.seqid
= nfs_alloc_seqid(&sp
->so_seqid
, gfp_mask
);
994 if (p
->o_arg
.seqid
== NULL
)
996 nfs_sb_active(dentry
->d_sb
);
997 p
->dentry
= dget(dentry
);
1000 atomic_inc(&sp
->so_count
);
1001 p
->o_arg
.open_flags
= flags
;
1002 p
->o_arg
.fmode
= fmode
& (FMODE_READ
|FMODE_WRITE
);
1003 /* don't put an ACCESS op in OPEN compound if O_EXCL, because ACCESS
1004 * will return permission denied for all bits until close */
1005 if (!(flags
& O_EXCL
)) {
1006 /* ask server to check for all possible rights as results
1008 p
->o_arg
.access
= NFS4_ACCESS_READ
| NFS4_ACCESS_MODIFY
|
1009 NFS4_ACCESS_EXTEND
| NFS4_ACCESS_EXECUTE
;
1011 p
->o_arg
.clientid
= server
->nfs_client
->cl_clientid
;
1012 p
->o_arg
.id
.create_time
= ktime_to_ns(sp
->so_seqid
.create_time
);
1013 p
->o_arg
.id
.uniquifier
= sp
->so_seqid
.owner_id
;
1014 p
->o_arg
.name
= &dentry
->d_name
;
1015 p
->o_arg
.server
= server
;
1016 p
->o_arg
.bitmask
= nfs4_bitmask(server
, label
);
1017 p
->o_arg
.open_bitmap
= &nfs4_fattr_bitmap
[0];
1018 p
->o_arg
.label
= label
;
1019 p
->o_arg
.claim
= nfs4_map_atomic_open_claim(server
, claim
);
1020 switch (p
->o_arg
.claim
) {
1021 case NFS4_OPEN_CLAIM_NULL
:
1022 case NFS4_OPEN_CLAIM_DELEGATE_CUR
:
1023 case NFS4_OPEN_CLAIM_DELEGATE_PREV
:
1024 p
->o_arg
.fh
= NFS_FH(dir
);
1026 case NFS4_OPEN_CLAIM_PREVIOUS
:
1027 case NFS4_OPEN_CLAIM_FH
:
1028 case NFS4_OPEN_CLAIM_DELEG_CUR_FH
:
1029 case NFS4_OPEN_CLAIM_DELEG_PREV_FH
:
1030 p
->o_arg
.fh
= NFS_FH(dentry
->d_inode
);
1032 if (attrs
!= NULL
&& attrs
->ia_valid
!= 0) {
1035 p
->o_arg
.u
.attrs
= &p
->attrs
;
1036 memcpy(&p
->attrs
, attrs
, sizeof(p
->attrs
));
1039 verf
[1] = current
->pid
;
1040 memcpy(p
->o_arg
.u
.verifier
.data
, verf
,
1041 sizeof(p
->o_arg
.u
.verifier
.data
));
1043 p
->c_arg
.fh
= &p
->o_res
.fh
;
1044 p
->c_arg
.stateid
= &p
->o_res
.stateid
;
1045 p
->c_arg
.seqid
= p
->o_arg
.seqid
;
1046 nfs4_init_opendata_res(p
);
1047 kref_init(&p
->kref
);
1051 nfs4_label_free(p
->f_label
);
1059 static void nfs4_opendata_free(struct kref
*kref
)
1061 struct nfs4_opendata
*p
= container_of(kref
,
1062 struct nfs4_opendata
, kref
);
1063 struct super_block
*sb
= p
->dentry
->d_sb
;
1065 nfs_free_seqid(p
->o_arg
.seqid
);
1066 if (p
->state
!= NULL
)
1067 nfs4_put_open_state(p
->state
);
1068 nfs4_put_state_owner(p
->owner
);
1070 nfs4_label_free(p
->f_label
);
1074 nfs_sb_deactive(sb
);
1075 nfs_fattr_free_names(&p
->f_attr
);
1076 kfree(p
->f_attr
.mdsthreshold
);
1080 static void nfs4_opendata_put(struct nfs4_opendata
*p
)
1083 kref_put(&p
->kref
, nfs4_opendata_free
);
1086 static int nfs4_wait_for_completion_rpc_task(struct rpc_task
*task
)
1090 ret
= rpc_wait_for_completion_task(task
);
1094 static int can_open_cached(struct nfs4_state
*state
, fmode_t mode
, int open_mode
)
1098 if (open_mode
& (O_EXCL
|O_TRUNC
))
1100 switch (mode
& (FMODE_READ
|FMODE_WRITE
)) {
1102 ret
|= test_bit(NFS_O_RDONLY_STATE
, &state
->flags
) != 0
1103 && state
->n_rdonly
!= 0;
1106 ret
|= test_bit(NFS_O_WRONLY_STATE
, &state
->flags
) != 0
1107 && state
->n_wronly
!= 0;
1109 case FMODE_READ
|FMODE_WRITE
:
1110 ret
|= test_bit(NFS_O_RDWR_STATE
, &state
->flags
) != 0
1111 && state
->n_rdwr
!= 0;
1117 static int can_open_delegated(struct nfs_delegation
*delegation
, fmode_t fmode
)
1119 if (delegation
== NULL
)
1121 if ((delegation
->type
& fmode
) != fmode
)
1123 if (test_bit(NFS_DELEGATION_RETURNING
, &delegation
->flags
))
1125 nfs_mark_delegation_referenced(delegation
);
1129 static void update_open_stateflags(struct nfs4_state
*state
, fmode_t fmode
)
1138 case FMODE_READ
|FMODE_WRITE
:
1141 nfs4_state_set_mode_locked(state
, state
->state
| fmode
);
1144 static void nfs_test_and_clear_all_open_stateid(struct nfs4_state
*state
)
1146 struct nfs_client
*clp
= state
->owner
->so_server
->nfs_client
;
1147 bool need_recover
= false;
1149 if (test_and_clear_bit(NFS_O_RDONLY_STATE
, &state
->flags
) && state
->n_rdonly
)
1150 need_recover
= true;
1151 if (test_and_clear_bit(NFS_O_WRONLY_STATE
, &state
->flags
) && state
->n_wronly
)
1152 need_recover
= true;
1153 if (test_and_clear_bit(NFS_O_RDWR_STATE
, &state
->flags
) && state
->n_rdwr
)
1154 need_recover
= true;
1156 nfs4_state_mark_reclaim_nograce(clp
, state
);
1159 static bool nfs_need_update_open_stateid(struct nfs4_state
*state
,
1160 nfs4_stateid
*stateid
)
1162 if (test_and_set_bit(NFS_OPEN_STATE
, &state
->flags
) == 0)
1164 if (!nfs4_stateid_match_other(stateid
, &state
->open_stateid
)) {
1165 nfs_test_and_clear_all_open_stateid(state
);
1168 if (nfs4_stateid_is_newer(stateid
, &state
->open_stateid
))
1173 static void nfs_clear_open_stateid_locked(struct nfs4_state
*state
,
1174 nfs4_stateid
*stateid
, fmode_t fmode
)
1176 clear_bit(NFS_O_RDWR_STATE
, &state
->flags
);
1177 switch (fmode
& (FMODE_READ
|FMODE_WRITE
)) {
1179 clear_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
1182 clear_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
1185 clear_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
1186 clear_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
1187 clear_bit(NFS_OPEN_STATE
, &state
->flags
);
1189 if (stateid
== NULL
)
1191 if (!nfs_need_update_open_stateid(state
, stateid
))
1193 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) == 0)
1194 nfs4_stateid_copy(&state
->stateid
, stateid
);
1195 nfs4_stateid_copy(&state
->open_stateid
, stateid
);
1198 static void nfs_clear_open_stateid(struct nfs4_state
*state
, nfs4_stateid
*stateid
, fmode_t fmode
)
1200 write_seqlock(&state
->seqlock
);
1201 nfs_clear_open_stateid_locked(state
, stateid
, fmode
);
1202 write_sequnlock(&state
->seqlock
);
1203 if (test_bit(NFS_STATE_RECLAIM_NOGRACE
, &state
->flags
))
1204 nfs4_schedule_state_manager(state
->owner
->so_server
->nfs_client
);
1207 static void nfs_set_open_stateid_locked(struct nfs4_state
*state
, nfs4_stateid
*stateid
, fmode_t fmode
)
1211 set_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
1214 set_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
1216 case FMODE_READ
|FMODE_WRITE
:
1217 set_bit(NFS_O_RDWR_STATE
, &state
->flags
);
1219 if (!nfs_need_update_open_stateid(state
, stateid
))
1221 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) == 0)
1222 nfs4_stateid_copy(&state
->stateid
, stateid
);
1223 nfs4_stateid_copy(&state
->open_stateid
, stateid
);
1226 static void __update_open_stateid(struct nfs4_state
*state
, nfs4_stateid
*open_stateid
, const nfs4_stateid
*deleg_stateid
, fmode_t fmode
)
1229 * Protect the call to nfs4_state_set_mode_locked and
1230 * serialise the stateid update
1232 write_seqlock(&state
->seqlock
);
1233 if (deleg_stateid
!= NULL
) {
1234 nfs4_stateid_copy(&state
->stateid
, deleg_stateid
);
1235 set_bit(NFS_DELEGATED_STATE
, &state
->flags
);
1237 if (open_stateid
!= NULL
)
1238 nfs_set_open_stateid_locked(state
, open_stateid
, fmode
);
1239 write_sequnlock(&state
->seqlock
);
1240 spin_lock(&state
->owner
->so_lock
);
1241 update_open_stateflags(state
, fmode
);
1242 spin_unlock(&state
->owner
->so_lock
);
1245 static int update_open_stateid(struct nfs4_state
*state
, nfs4_stateid
*open_stateid
, nfs4_stateid
*delegation
, fmode_t fmode
)
1247 struct nfs_inode
*nfsi
= NFS_I(state
->inode
);
1248 struct nfs_delegation
*deleg_cur
;
1251 fmode
&= (FMODE_READ
|FMODE_WRITE
);
1254 deleg_cur
= rcu_dereference(nfsi
->delegation
);
1255 if (deleg_cur
== NULL
)
1258 spin_lock(&deleg_cur
->lock
);
1259 if (rcu_dereference(nfsi
->delegation
) != deleg_cur
||
1260 test_bit(NFS_DELEGATION_RETURNING
, &deleg_cur
->flags
) ||
1261 (deleg_cur
->type
& fmode
) != fmode
)
1262 goto no_delegation_unlock
;
1264 if (delegation
== NULL
)
1265 delegation
= &deleg_cur
->stateid
;
1266 else if (!nfs4_stateid_match(&deleg_cur
->stateid
, delegation
))
1267 goto no_delegation_unlock
;
1269 nfs_mark_delegation_referenced(deleg_cur
);
1270 __update_open_stateid(state
, open_stateid
, &deleg_cur
->stateid
, fmode
);
1272 no_delegation_unlock
:
1273 spin_unlock(&deleg_cur
->lock
);
1277 if (!ret
&& open_stateid
!= NULL
) {
1278 __update_open_stateid(state
, open_stateid
, NULL
, fmode
);
1281 if (test_bit(NFS_STATE_RECLAIM_NOGRACE
, &state
->flags
))
1282 nfs4_schedule_state_manager(state
->owner
->so_server
->nfs_client
);
1288 static void nfs4_return_incompatible_delegation(struct inode
*inode
, fmode_t fmode
)
1290 struct nfs_delegation
*delegation
;
1293 delegation
= rcu_dereference(NFS_I(inode
)->delegation
);
1294 if (delegation
== NULL
|| (delegation
->type
& fmode
) == fmode
) {
1299 nfs4_inode_return_delegation(inode
);
1302 static struct nfs4_state
*nfs4_try_open_cached(struct nfs4_opendata
*opendata
)
1304 struct nfs4_state
*state
= opendata
->state
;
1305 struct nfs_inode
*nfsi
= NFS_I(state
->inode
);
1306 struct nfs_delegation
*delegation
;
1307 int open_mode
= opendata
->o_arg
.open_flags
;
1308 fmode_t fmode
= opendata
->o_arg
.fmode
;
1309 nfs4_stateid stateid
;
1313 spin_lock(&state
->owner
->so_lock
);
1314 if (can_open_cached(state
, fmode
, open_mode
)) {
1315 update_open_stateflags(state
, fmode
);
1316 spin_unlock(&state
->owner
->so_lock
);
1317 goto out_return_state
;
1319 spin_unlock(&state
->owner
->so_lock
);
1321 delegation
= rcu_dereference(nfsi
->delegation
);
1322 if (!can_open_delegated(delegation
, fmode
)) {
1326 /* Save the delegation */
1327 nfs4_stateid_copy(&stateid
, &delegation
->stateid
);
1329 nfs_release_seqid(opendata
->o_arg
.seqid
);
1330 if (!opendata
->is_recover
) {
1331 ret
= nfs_may_open(state
->inode
, state
->owner
->so_cred
, open_mode
);
1337 /* Try to update the stateid using the delegation */
1338 if (update_open_stateid(state
, NULL
, &stateid
, fmode
))
1339 goto out_return_state
;
1342 return ERR_PTR(ret
);
1344 atomic_inc(&state
->count
);
1349 nfs4_opendata_check_deleg(struct nfs4_opendata
*data
, struct nfs4_state
*state
)
1351 struct nfs_client
*clp
= NFS_SERVER(state
->inode
)->nfs_client
;
1352 struct nfs_delegation
*delegation
;
1353 int delegation_flags
= 0;
1356 delegation
= rcu_dereference(NFS_I(state
->inode
)->delegation
);
1358 delegation_flags
= delegation
->flags
;
1360 if (data
->o_arg
.claim
== NFS4_OPEN_CLAIM_DELEGATE_CUR
) {
1361 pr_err_ratelimited("NFS: Broken NFSv4 server %s is "
1362 "returning a delegation for "
1363 "OPEN(CLAIM_DELEGATE_CUR)\n",
1365 } else if ((delegation_flags
& 1UL<<NFS_DELEGATION_NEED_RECLAIM
) == 0)
1366 nfs_inode_set_delegation(state
->inode
,
1367 data
->owner
->so_cred
,
1370 nfs_inode_reclaim_delegation(state
->inode
,
1371 data
->owner
->so_cred
,
1376 * Check the inode attributes against the CLAIM_PREVIOUS returned attributes
1377 * and update the nfs4_state.
1379 static struct nfs4_state
*
1380 _nfs4_opendata_reclaim_to_nfs4_state(struct nfs4_opendata
*data
)
1382 struct inode
*inode
= data
->state
->inode
;
1383 struct nfs4_state
*state
= data
->state
;
1386 if (!data
->rpc_done
) {
1387 if (data
->rpc_status
) {
1388 ret
= data
->rpc_status
;
1391 /* cached opens have already been processed */
1395 ret
= nfs_refresh_inode(inode
, &data
->f_attr
);
1399 if (data
->o_res
.delegation_type
!= 0)
1400 nfs4_opendata_check_deleg(data
, state
);
1402 update_open_stateid(state
, &data
->o_res
.stateid
, NULL
,
1404 atomic_inc(&state
->count
);
1408 return ERR_PTR(ret
);
1412 static struct nfs4_state
*
1413 _nfs4_opendata_to_nfs4_state(struct nfs4_opendata
*data
)
1415 struct inode
*inode
;
1416 struct nfs4_state
*state
= NULL
;
1419 if (!data
->rpc_done
) {
1420 state
= nfs4_try_open_cached(data
);
1425 if (!(data
->f_attr
.valid
& NFS_ATTR_FATTR
))
1427 inode
= nfs_fhget(data
->dir
->d_sb
, &data
->o_res
.fh
, &data
->f_attr
, data
->f_label
);
1428 ret
= PTR_ERR(inode
);
1432 state
= nfs4_get_open_state(inode
, data
->owner
);
1435 if (data
->o_res
.delegation_type
!= 0)
1436 nfs4_opendata_check_deleg(data
, state
);
1437 update_open_stateid(state
, &data
->o_res
.stateid
, NULL
,
1441 nfs_release_seqid(data
->o_arg
.seqid
);
1446 return ERR_PTR(ret
);
1449 static struct nfs4_state
*
1450 nfs4_opendata_to_nfs4_state(struct nfs4_opendata
*data
)
1452 if (data
->o_arg
.claim
== NFS4_OPEN_CLAIM_PREVIOUS
)
1453 return _nfs4_opendata_reclaim_to_nfs4_state(data
);
1454 return _nfs4_opendata_to_nfs4_state(data
);
1457 static struct nfs_open_context
*nfs4_state_find_open_context(struct nfs4_state
*state
)
1459 struct nfs_inode
*nfsi
= NFS_I(state
->inode
);
1460 struct nfs_open_context
*ctx
;
1462 spin_lock(&state
->inode
->i_lock
);
1463 list_for_each_entry(ctx
, &nfsi
->open_files
, list
) {
1464 if (ctx
->state
!= state
)
1466 get_nfs_open_context(ctx
);
1467 spin_unlock(&state
->inode
->i_lock
);
1470 spin_unlock(&state
->inode
->i_lock
);
1471 return ERR_PTR(-ENOENT
);
1474 static struct nfs4_opendata
*nfs4_open_recoverdata_alloc(struct nfs_open_context
*ctx
,
1475 struct nfs4_state
*state
, enum open_claim_type4 claim
)
1477 struct nfs4_opendata
*opendata
;
1479 opendata
= nfs4_opendata_alloc(ctx
->dentry
, state
->owner
, 0, 0,
1480 NULL
, NULL
, claim
, GFP_NOFS
);
1481 if (opendata
== NULL
)
1482 return ERR_PTR(-ENOMEM
);
1483 opendata
->state
= state
;
1484 atomic_inc(&state
->count
);
1488 static int nfs4_open_recover_helper(struct nfs4_opendata
*opendata
, fmode_t fmode
, struct nfs4_state
**res
)
1490 struct nfs4_state
*newstate
;
1493 opendata
->o_arg
.open_flags
= 0;
1494 opendata
->o_arg
.fmode
= fmode
;
1495 memset(&opendata
->o_res
, 0, sizeof(opendata
->o_res
));
1496 memset(&opendata
->c_res
, 0, sizeof(opendata
->c_res
));
1497 nfs4_init_opendata_res(opendata
);
1498 ret
= _nfs4_recover_proc_open(opendata
);
1501 newstate
= nfs4_opendata_to_nfs4_state(opendata
);
1502 if (IS_ERR(newstate
))
1503 return PTR_ERR(newstate
);
1504 nfs4_close_state(newstate
, fmode
);
1509 static int nfs4_open_recover(struct nfs4_opendata
*opendata
, struct nfs4_state
*state
)
1511 struct nfs4_state
*newstate
;
1514 /* Don't trigger recovery in nfs_test_and_clear_all_open_stateid */
1515 clear_bit(NFS_O_RDWR_STATE
, &state
->flags
);
1516 clear_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
1517 clear_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
1518 /* memory barrier prior to reading state->n_* */
1519 clear_bit(NFS_DELEGATED_STATE
, &state
->flags
);
1520 clear_bit(NFS_OPEN_STATE
, &state
->flags
);
1522 if (state
->n_rdwr
!= 0) {
1523 ret
= nfs4_open_recover_helper(opendata
, FMODE_READ
|FMODE_WRITE
, &newstate
);
1526 if (newstate
!= state
)
1529 if (state
->n_wronly
!= 0) {
1530 ret
= nfs4_open_recover_helper(opendata
, FMODE_WRITE
, &newstate
);
1533 if (newstate
!= state
)
1536 if (state
->n_rdonly
!= 0) {
1537 ret
= nfs4_open_recover_helper(opendata
, FMODE_READ
, &newstate
);
1540 if (newstate
!= state
)
1544 * We may have performed cached opens for all three recoveries.
1545 * Check if we need to update the current stateid.
1547 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) == 0 &&
1548 !nfs4_stateid_match(&state
->stateid
, &state
->open_stateid
)) {
1549 write_seqlock(&state
->seqlock
);
1550 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) == 0)
1551 nfs4_stateid_copy(&state
->stateid
, &state
->open_stateid
);
1552 write_sequnlock(&state
->seqlock
);
1559 * reclaim state on the server after a reboot.
1561 static int _nfs4_do_open_reclaim(struct nfs_open_context
*ctx
, struct nfs4_state
*state
)
1563 struct nfs_delegation
*delegation
;
1564 struct nfs4_opendata
*opendata
;
1565 fmode_t delegation_type
= 0;
1568 opendata
= nfs4_open_recoverdata_alloc(ctx
, state
,
1569 NFS4_OPEN_CLAIM_PREVIOUS
);
1570 if (IS_ERR(opendata
))
1571 return PTR_ERR(opendata
);
1573 delegation
= rcu_dereference(NFS_I(state
->inode
)->delegation
);
1574 if (delegation
!= NULL
&& test_bit(NFS_DELEGATION_NEED_RECLAIM
, &delegation
->flags
) != 0)
1575 delegation_type
= delegation
->type
;
1577 opendata
->o_arg
.u
.delegation_type
= delegation_type
;
1578 status
= nfs4_open_recover(opendata
, state
);
1579 nfs4_opendata_put(opendata
);
1583 static int nfs4_do_open_reclaim(struct nfs_open_context
*ctx
, struct nfs4_state
*state
)
1585 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
1586 struct nfs4_exception exception
= { };
1589 err
= _nfs4_do_open_reclaim(ctx
, state
);
1590 trace_nfs4_open_reclaim(ctx
, 0, err
);
1591 if (nfs4_clear_cap_atomic_open_v1(server
, err
, &exception
))
1593 if (err
!= -NFS4ERR_DELAY
)
1595 nfs4_handle_exception(server
, err
, &exception
);
1596 } while (exception
.retry
);
1600 static int nfs4_open_reclaim(struct nfs4_state_owner
*sp
, struct nfs4_state
*state
)
1602 struct nfs_open_context
*ctx
;
1605 ctx
= nfs4_state_find_open_context(state
);
1608 ret
= nfs4_do_open_reclaim(ctx
, state
);
1609 put_nfs_open_context(ctx
);
1613 static int nfs4_handle_delegation_recall_error(struct nfs_server
*server
, struct nfs4_state
*state
, const nfs4_stateid
*stateid
, int err
)
1617 printk(KERN_ERR
"NFS: %s: unhandled error "
1618 "%d.\n", __func__
, err
);
1623 case -NFS4ERR_BADSESSION
:
1624 case -NFS4ERR_BADSLOT
:
1625 case -NFS4ERR_BAD_HIGH_SLOT
:
1626 case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION
:
1627 case -NFS4ERR_DEADSESSION
:
1628 set_bit(NFS_DELEGATED_STATE
, &state
->flags
);
1629 nfs4_schedule_session_recovery(server
->nfs_client
->cl_session
, err
);
1631 case -NFS4ERR_STALE_CLIENTID
:
1632 case -NFS4ERR_STALE_STATEID
:
1633 set_bit(NFS_DELEGATED_STATE
, &state
->flags
);
1634 case -NFS4ERR_EXPIRED
:
1635 /* Don't recall a delegation if it was lost */
1636 nfs4_schedule_lease_recovery(server
->nfs_client
);
1638 case -NFS4ERR_MOVED
:
1639 nfs4_schedule_migration_recovery(server
);
1641 case -NFS4ERR_LEASE_MOVED
:
1642 nfs4_schedule_lease_moved_recovery(server
->nfs_client
);
1644 case -NFS4ERR_DELEG_REVOKED
:
1645 case -NFS4ERR_ADMIN_REVOKED
:
1646 case -NFS4ERR_BAD_STATEID
:
1647 case -NFS4ERR_OPENMODE
:
1648 nfs_inode_find_state_and_recover(state
->inode
,
1650 nfs4_schedule_stateid_recovery(server
, state
);
1652 case -NFS4ERR_DELAY
:
1653 case -NFS4ERR_GRACE
:
1654 set_bit(NFS_DELEGATED_STATE
, &state
->flags
);
1658 case -NFS4ERR_DENIED
:
1659 /* kill_proc(fl->fl_pid, SIGLOST, 1); */
1665 int nfs4_open_delegation_recall(struct nfs_open_context
*ctx
, struct nfs4_state
*state
, const nfs4_stateid
*stateid
)
1667 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
1668 struct nfs4_opendata
*opendata
;
1671 opendata
= nfs4_open_recoverdata_alloc(ctx
, state
,
1672 NFS4_OPEN_CLAIM_DELEG_CUR_FH
);
1673 if (IS_ERR(opendata
))
1674 return PTR_ERR(opendata
);
1675 nfs4_stateid_copy(&opendata
->o_arg
.u
.delegation
, stateid
);
1676 err
= nfs4_open_recover(opendata
, state
);
1677 nfs4_opendata_put(opendata
);
1678 return nfs4_handle_delegation_recall_error(server
, state
, stateid
, err
);
1681 static void nfs4_open_confirm_prepare(struct rpc_task
*task
, void *calldata
)
1683 struct nfs4_opendata
*data
= calldata
;
1685 nfs40_setup_sequence(data
->o_arg
.server
->nfs_client
->cl_slot_tbl
,
1686 &data
->c_arg
.seq_args
, &data
->c_res
.seq_res
, task
);
1689 static void nfs4_open_confirm_done(struct rpc_task
*task
, void *calldata
)
1691 struct nfs4_opendata
*data
= calldata
;
1693 nfs40_sequence_done(task
, &data
->c_res
.seq_res
);
1695 data
->rpc_status
= task
->tk_status
;
1696 if (data
->rpc_status
== 0) {
1697 nfs4_stateid_copy(&data
->o_res
.stateid
, &data
->c_res
.stateid
);
1698 nfs_confirm_seqid(&data
->owner
->so_seqid
, 0);
1699 renew_lease(data
->o_res
.server
, data
->timestamp
);
1704 static void nfs4_open_confirm_release(void *calldata
)
1706 struct nfs4_opendata
*data
= calldata
;
1707 struct nfs4_state
*state
= NULL
;
1709 /* If this request hasn't been cancelled, do nothing */
1710 if (data
->cancelled
== 0)
1712 /* In case of error, no cleanup! */
1713 if (!data
->rpc_done
)
1715 state
= nfs4_opendata_to_nfs4_state(data
);
1717 nfs4_close_state(state
, data
->o_arg
.fmode
);
1719 nfs4_opendata_put(data
);
1722 static const struct rpc_call_ops nfs4_open_confirm_ops
= {
1723 .rpc_call_prepare
= nfs4_open_confirm_prepare
,
1724 .rpc_call_done
= nfs4_open_confirm_done
,
1725 .rpc_release
= nfs4_open_confirm_release
,
1729 * Note: On error, nfs4_proc_open_confirm will free the struct nfs4_opendata
1731 static int _nfs4_proc_open_confirm(struct nfs4_opendata
*data
)
1733 struct nfs_server
*server
= NFS_SERVER(data
->dir
->d_inode
);
1734 struct rpc_task
*task
;
1735 struct rpc_message msg
= {
1736 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_OPEN_CONFIRM
],
1737 .rpc_argp
= &data
->c_arg
,
1738 .rpc_resp
= &data
->c_res
,
1739 .rpc_cred
= data
->owner
->so_cred
,
1741 struct rpc_task_setup task_setup_data
= {
1742 .rpc_client
= server
->client
,
1743 .rpc_message
= &msg
,
1744 .callback_ops
= &nfs4_open_confirm_ops
,
1745 .callback_data
= data
,
1746 .workqueue
= nfsiod_workqueue
,
1747 .flags
= RPC_TASK_ASYNC
,
1751 nfs4_init_sequence(&data
->c_arg
.seq_args
, &data
->c_res
.seq_res
, 1);
1752 kref_get(&data
->kref
);
1754 data
->rpc_status
= 0;
1755 data
->timestamp
= jiffies
;
1756 task
= rpc_run_task(&task_setup_data
);
1758 return PTR_ERR(task
);
1759 status
= nfs4_wait_for_completion_rpc_task(task
);
1761 data
->cancelled
= 1;
1764 status
= data
->rpc_status
;
1769 static void nfs4_open_prepare(struct rpc_task
*task
, void *calldata
)
1771 struct nfs4_opendata
*data
= calldata
;
1772 struct nfs4_state_owner
*sp
= data
->owner
;
1773 struct nfs_client
*clp
= sp
->so_server
->nfs_client
;
1775 if (nfs_wait_on_sequence(data
->o_arg
.seqid
, task
) != 0)
1778 * Check if we still need to send an OPEN call, or if we can use
1779 * a delegation instead.
1781 if (data
->state
!= NULL
) {
1782 struct nfs_delegation
*delegation
;
1784 if (can_open_cached(data
->state
, data
->o_arg
.fmode
, data
->o_arg
.open_flags
))
1787 delegation
= rcu_dereference(NFS_I(data
->state
->inode
)->delegation
);
1788 if (data
->o_arg
.claim
!= NFS4_OPEN_CLAIM_DELEGATE_CUR
&&
1789 data
->o_arg
.claim
!= NFS4_OPEN_CLAIM_DELEG_CUR_FH
&&
1790 can_open_delegated(delegation
, data
->o_arg
.fmode
))
1791 goto unlock_no_action
;
1794 /* Update client id. */
1795 data
->o_arg
.clientid
= clp
->cl_clientid
;
1796 switch (data
->o_arg
.claim
) {
1797 case NFS4_OPEN_CLAIM_PREVIOUS
:
1798 case NFS4_OPEN_CLAIM_DELEG_CUR_FH
:
1799 case NFS4_OPEN_CLAIM_DELEG_PREV_FH
:
1800 data
->o_arg
.open_bitmap
= &nfs4_open_noattr_bitmap
[0];
1801 case NFS4_OPEN_CLAIM_FH
:
1802 task
->tk_msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_OPEN_NOATTR
];
1803 nfs_copy_fh(&data
->o_res
.fh
, data
->o_arg
.fh
);
1805 data
->timestamp
= jiffies
;
1806 if (nfs4_setup_sequence(data
->o_arg
.server
,
1807 &data
->o_arg
.seq_args
,
1808 &data
->o_res
.seq_res
,
1810 nfs_release_seqid(data
->o_arg
.seqid
);
1812 /* Set the create mode (note dependency on the session type) */
1813 data
->o_arg
.createmode
= NFS4_CREATE_UNCHECKED
;
1814 if (data
->o_arg
.open_flags
& O_EXCL
) {
1815 data
->o_arg
.createmode
= NFS4_CREATE_EXCLUSIVE
;
1816 if (nfs4_has_persistent_session(clp
))
1817 data
->o_arg
.createmode
= NFS4_CREATE_GUARDED
;
1818 else if (clp
->cl_mvops
->minor_version
> 0)
1819 data
->o_arg
.createmode
= NFS4_CREATE_EXCLUSIVE4_1
;
1825 task
->tk_action
= NULL
;
1827 nfs4_sequence_done(task
, &data
->o_res
.seq_res
);
1830 static void nfs4_open_done(struct rpc_task
*task
, void *calldata
)
1832 struct nfs4_opendata
*data
= calldata
;
1834 data
->rpc_status
= task
->tk_status
;
1836 if (!nfs4_sequence_done(task
, &data
->o_res
.seq_res
))
1839 if (task
->tk_status
== 0) {
1840 if (data
->o_res
.f_attr
->valid
& NFS_ATTR_FATTR_TYPE
) {
1841 switch (data
->o_res
.f_attr
->mode
& S_IFMT
) {
1845 data
->rpc_status
= -ELOOP
;
1848 data
->rpc_status
= -EISDIR
;
1851 data
->rpc_status
= -ENOTDIR
;
1854 renew_lease(data
->o_res
.server
, data
->timestamp
);
1855 if (!(data
->o_res
.rflags
& NFS4_OPEN_RESULT_CONFIRM
))
1856 nfs_confirm_seqid(&data
->owner
->so_seqid
, 0);
1861 static void nfs4_open_release(void *calldata
)
1863 struct nfs4_opendata
*data
= calldata
;
1864 struct nfs4_state
*state
= NULL
;
1866 /* If this request hasn't been cancelled, do nothing */
1867 if (data
->cancelled
== 0)
1869 /* In case of error, no cleanup! */
1870 if (data
->rpc_status
!= 0 || !data
->rpc_done
)
1872 /* In case we need an open_confirm, no cleanup! */
1873 if (data
->o_res
.rflags
& NFS4_OPEN_RESULT_CONFIRM
)
1875 state
= nfs4_opendata_to_nfs4_state(data
);
1877 nfs4_close_state(state
, data
->o_arg
.fmode
);
1879 nfs4_opendata_put(data
);
1882 static const struct rpc_call_ops nfs4_open_ops
= {
1883 .rpc_call_prepare
= nfs4_open_prepare
,
1884 .rpc_call_done
= nfs4_open_done
,
1885 .rpc_release
= nfs4_open_release
,
1888 static int nfs4_run_open_task(struct nfs4_opendata
*data
, int isrecover
)
1890 struct inode
*dir
= data
->dir
->d_inode
;
1891 struct nfs_server
*server
= NFS_SERVER(dir
);
1892 struct nfs_openargs
*o_arg
= &data
->o_arg
;
1893 struct nfs_openres
*o_res
= &data
->o_res
;
1894 struct rpc_task
*task
;
1895 struct rpc_message msg
= {
1896 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_OPEN
],
1899 .rpc_cred
= data
->owner
->so_cred
,
1901 struct rpc_task_setup task_setup_data
= {
1902 .rpc_client
= server
->client
,
1903 .rpc_message
= &msg
,
1904 .callback_ops
= &nfs4_open_ops
,
1905 .callback_data
= data
,
1906 .workqueue
= nfsiod_workqueue
,
1907 .flags
= RPC_TASK_ASYNC
,
1911 nfs4_init_sequence(&o_arg
->seq_args
, &o_res
->seq_res
, 1);
1912 kref_get(&data
->kref
);
1914 data
->rpc_status
= 0;
1915 data
->cancelled
= 0;
1916 data
->is_recover
= 0;
1918 nfs4_set_sequence_privileged(&o_arg
->seq_args
);
1919 data
->is_recover
= 1;
1921 task
= rpc_run_task(&task_setup_data
);
1923 return PTR_ERR(task
);
1924 status
= nfs4_wait_for_completion_rpc_task(task
);
1926 data
->cancelled
= 1;
1929 status
= data
->rpc_status
;
1935 static int _nfs4_recover_proc_open(struct nfs4_opendata
*data
)
1937 struct inode
*dir
= data
->dir
->d_inode
;
1938 struct nfs_openres
*o_res
= &data
->o_res
;
1941 status
= nfs4_run_open_task(data
, 1);
1942 if (status
!= 0 || !data
->rpc_done
)
1945 nfs_fattr_map_and_free_names(NFS_SERVER(dir
), &data
->f_attr
);
1947 if (o_res
->rflags
& NFS4_OPEN_RESULT_CONFIRM
) {
1948 status
= _nfs4_proc_open_confirm(data
);
1957 * Additional permission checks in order to distinguish between an
1958 * open for read, and an open for execute. This works around the
1959 * fact that NFSv4 OPEN treats read and execute permissions as being
1961 * Note that in the non-execute case, we want to turn off permission
1962 * checking if we just created a new file (POSIX open() semantics).
1964 static int nfs4_opendata_access(struct rpc_cred
*cred
,
1965 struct nfs4_opendata
*opendata
,
1966 struct nfs4_state
*state
, fmode_t fmode
,
1969 struct nfs_access_entry cache
;
1972 /* access call failed or for some reason the server doesn't
1973 * support any access modes -- defer access call until later */
1974 if (opendata
->o_res
.access_supported
== 0)
1979 * Use openflags to check for exec, because fmode won't
1980 * always have FMODE_EXEC set when file open for exec.
1982 if (openflags
& __FMODE_EXEC
) {
1983 /* ONLY check for exec rights */
1985 } else if ((fmode
& FMODE_READ
) && !opendata
->file_created
)
1989 cache
.jiffies
= jiffies
;
1990 nfs_access_set_mask(&cache
, opendata
->o_res
.access_result
);
1991 nfs_access_add_cache(state
->inode
, &cache
);
1993 if ((mask
& ~cache
.mask
& (MAY_READ
| MAY_EXEC
)) == 0)
1996 /* even though OPEN succeeded, access is denied. Close the file */
1997 nfs4_close_state(state
, fmode
);
2002 * Note: On error, nfs4_proc_open will free the struct nfs4_opendata
2004 static int _nfs4_proc_open(struct nfs4_opendata
*data
)
2006 struct inode
*dir
= data
->dir
->d_inode
;
2007 struct nfs_server
*server
= NFS_SERVER(dir
);
2008 struct nfs_openargs
*o_arg
= &data
->o_arg
;
2009 struct nfs_openres
*o_res
= &data
->o_res
;
2012 status
= nfs4_run_open_task(data
, 0);
2013 if (!data
->rpc_done
)
2016 if (status
== -NFS4ERR_BADNAME
&&
2017 !(o_arg
->open_flags
& O_CREAT
))
2022 nfs_fattr_map_and_free_names(server
, &data
->f_attr
);
2024 if (o_arg
->open_flags
& O_CREAT
) {
2025 update_changeattr(dir
, &o_res
->cinfo
);
2026 if (o_arg
->open_flags
& O_EXCL
)
2027 data
->file_created
= 1;
2028 else if (o_res
->cinfo
.before
!= o_res
->cinfo
.after
)
2029 data
->file_created
= 1;
2031 if ((o_res
->rflags
& NFS4_OPEN_RESULT_LOCKTYPE_POSIX
) == 0)
2032 server
->caps
&= ~NFS_CAP_POSIX_LOCK
;
2033 if(o_res
->rflags
& NFS4_OPEN_RESULT_CONFIRM
) {
2034 status
= _nfs4_proc_open_confirm(data
);
2038 if (!(o_res
->f_attr
->valid
& NFS_ATTR_FATTR
))
2039 nfs4_proc_getattr(server
, &o_res
->fh
, o_res
->f_attr
, o_res
->f_label
);
2043 static int nfs4_recover_expired_lease(struct nfs_server
*server
)
2045 return nfs4_client_recover_expired_lease(server
->nfs_client
);
2050 * reclaim state on the server after a network partition.
2051 * Assumes caller holds the appropriate lock
2053 static int _nfs4_open_expired(struct nfs_open_context
*ctx
, struct nfs4_state
*state
)
2055 struct nfs4_opendata
*opendata
;
2058 opendata
= nfs4_open_recoverdata_alloc(ctx
, state
,
2059 NFS4_OPEN_CLAIM_FH
);
2060 if (IS_ERR(opendata
))
2061 return PTR_ERR(opendata
);
2062 ret
= nfs4_open_recover(opendata
, state
);
2064 d_drop(ctx
->dentry
);
2065 nfs4_opendata_put(opendata
);
2069 static int nfs4_do_open_expired(struct nfs_open_context
*ctx
, struct nfs4_state
*state
)
2071 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
2072 struct nfs4_exception exception
= { };
2076 err
= _nfs4_open_expired(ctx
, state
);
2077 trace_nfs4_open_expired(ctx
, 0, err
);
2078 if (nfs4_clear_cap_atomic_open_v1(server
, err
, &exception
))
2083 case -NFS4ERR_GRACE
:
2084 case -NFS4ERR_DELAY
:
2085 nfs4_handle_exception(server
, err
, &exception
);
2088 } while (exception
.retry
);
2093 static int nfs4_open_expired(struct nfs4_state_owner
*sp
, struct nfs4_state
*state
)
2095 struct nfs_open_context
*ctx
;
2098 ctx
= nfs4_state_find_open_context(state
);
2101 ret
= nfs4_do_open_expired(ctx
, state
);
2102 put_nfs_open_context(ctx
);
2106 static void nfs_finish_clear_delegation_stateid(struct nfs4_state
*state
)
2108 nfs_remove_bad_delegation(state
->inode
);
2109 write_seqlock(&state
->seqlock
);
2110 nfs4_stateid_copy(&state
->stateid
, &state
->open_stateid
);
2111 write_sequnlock(&state
->seqlock
);
2112 clear_bit(NFS_DELEGATED_STATE
, &state
->flags
);
2115 static void nfs40_clear_delegation_stateid(struct nfs4_state
*state
)
2117 if (rcu_access_pointer(NFS_I(state
->inode
)->delegation
) != NULL
)
2118 nfs_finish_clear_delegation_stateid(state
);
2121 static int nfs40_open_expired(struct nfs4_state_owner
*sp
, struct nfs4_state
*state
)
2123 /* NFSv4.0 doesn't allow for delegation recovery on open expire */
2124 nfs40_clear_delegation_stateid(state
);
2125 return nfs4_open_expired(sp
, state
);
2128 #if defined(CONFIG_NFS_V4_1)
2129 static void nfs41_check_delegation_stateid(struct nfs4_state
*state
)
2131 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
2132 nfs4_stateid stateid
;
2133 struct nfs_delegation
*delegation
;
2134 struct rpc_cred
*cred
;
2137 /* Get the delegation credential for use by test/free_stateid */
2139 delegation
= rcu_dereference(NFS_I(state
->inode
)->delegation
);
2140 if (delegation
== NULL
) {
2145 nfs4_stateid_copy(&stateid
, &delegation
->stateid
);
2146 cred
= get_rpccred(delegation
->cred
);
2148 status
= nfs41_test_stateid(server
, &stateid
, cred
);
2149 trace_nfs4_test_delegation_stateid(state
, NULL
, status
);
2151 if (status
!= NFS_OK
) {
2152 /* Free the stateid unless the server explicitly
2153 * informs us the stateid is unrecognized. */
2154 if (status
!= -NFS4ERR_BAD_STATEID
)
2155 nfs41_free_stateid(server
, &stateid
, cred
);
2156 nfs_finish_clear_delegation_stateid(state
);
2163 * nfs41_check_open_stateid - possibly free an open stateid
2165 * @state: NFSv4 state for an inode
2167 * Returns NFS_OK if recovery for this stateid is now finished.
2168 * Otherwise a negative NFS4ERR value is returned.
2170 static int nfs41_check_open_stateid(struct nfs4_state
*state
)
2172 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
2173 nfs4_stateid
*stateid
= &state
->open_stateid
;
2174 struct rpc_cred
*cred
= state
->owner
->so_cred
;
2177 /* If a state reset has been done, test_stateid is unneeded */
2178 if ((test_bit(NFS_O_RDONLY_STATE
, &state
->flags
) == 0) &&
2179 (test_bit(NFS_O_WRONLY_STATE
, &state
->flags
) == 0) &&
2180 (test_bit(NFS_O_RDWR_STATE
, &state
->flags
) == 0))
2181 return -NFS4ERR_BAD_STATEID
;
2183 status
= nfs41_test_stateid(server
, stateid
, cred
);
2184 trace_nfs4_test_open_stateid(state
, NULL
, status
);
2185 if (status
!= NFS_OK
) {
2186 /* Free the stateid unless the server explicitly
2187 * informs us the stateid is unrecognized. */
2188 if (status
!= -NFS4ERR_BAD_STATEID
)
2189 nfs41_free_stateid(server
, stateid
, cred
);
2191 clear_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
2192 clear_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
2193 clear_bit(NFS_O_RDWR_STATE
, &state
->flags
);
2194 clear_bit(NFS_OPEN_STATE
, &state
->flags
);
2199 static int nfs41_open_expired(struct nfs4_state_owner
*sp
, struct nfs4_state
*state
)
2203 nfs41_check_delegation_stateid(state
);
2204 status
= nfs41_check_open_stateid(state
);
2205 if (status
!= NFS_OK
)
2206 status
= nfs4_open_expired(sp
, state
);
2212 * on an EXCLUSIVE create, the server should send back a bitmask with FATTR4-*
2213 * fields corresponding to attributes that were used to store the verifier.
2214 * Make sure we clobber those fields in the later setattr call
2216 static inline void nfs4_exclusive_attrset(struct nfs4_opendata
*opendata
, struct iattr
*sattr
)
2218 if ((opendata
->o_res
.attrset
[1] & FATTR4_WORD1_TIME_ACCESS
) &&
2219 !(sattr
->ia_valid
& ATTR_ATIME_SET
))
2220 sattr
->ia_valid
|= ATTR_ATIME
;
2222 if ((opendata
->o_res
.attrset
[1] & FATTR4_WORD1_TIME_MODIFY
) &&
2223 !(sattr
->ia_valid
& ATTR_MTIME_SET
))
2224 sattr
->ia_valid
|= ATTR_MTIME
;
2227 static int _nfs4_open_and_get_state(struct nfs4_opendata
*opendata
,
2230 struct nfs_open_context
*ctx
)
2232 struct nfs4_state_owner
*sp
= opendata
->owner
;
2233 struct nfs_server
*server
= sp
->so_server
;
2234 struct dentry
*dentry
;
2235 struct nfs4_state
*state
;
2239 seq
= raw_seqcount_begin(&sp
->so_reclaim_seqcount
);
2241 ret
= _nfs4_proc_open(opendata
);
2245 state
= nfs4_opendata_to_nfs4_state(opendata
);
2246 ret
= PTR_ERR(state
);
2249 if (server
->caps
& NFS_CAP_POSIX_LOCK
)
2250 set_bit(NFS_STATE_POSIX_LOCKS
, &state
->flags
);
2252 dentry
= opendata
->dentry
;
2253 if (dentry
->d_inode
== NULL
) {
2254 /* FIXME: Is this d_drop() ever needed? */
2256 dentry
= d_add_unique(dentry
, igrab(state
->inode
));
2257 if (dentry
== NULL
) {
2258 dentry
= opendata
->dentry
;
2259 } else if (dentry
!= ctx
->dentry
) {
2261 ctx
->dentry
= dget(dentry
);
2263 nfs_set_verifier(dentry
,
2264 nfs_save_change_attribute(opendata
->dir
->d_inode
));
2267 ret
= nfs4_opendata_access(sp
->so_cred
, opendata
, state
, fmode
, flags
);
2272 if (dentry
->d_inode
== state
->inode
) {
2273 nfs_inode_attach_open_context(ctx
);
2274 if (read_seqcount_retry(&sp
->so_reclaim_seqcount
, seq
))
2275 nfs4_schedule_stateid_recovery(server
, state
);
2282 * Returns a referenced nfs4_state
2284 static int _nfs4_do_open(struct inode
*dir
,
2285 struct nfs_open_context
*ctx
,
2287 struct iattr
*sattr
,
2288 struct nfs4_label
*label
,
2291 struct nfs4_state_owner
*sp
;
2292 struct nfs4_state
*state
= NULL
;
2293 struct nfs_server
*server
= NFS_SERVER(dir
);
2294 struct nfs4_opendata
*opendata
;
2295 struct dentry
*dentry
= ctx
->dentry
;
2296 struct rpc_cred
*cred
= ctx
->cred
;
2297 struct nfs4_threshold
**ctx_th
= &ctx
->mdsthreshold
;
2298 fmode_t fmode
= ctx
->mode
& (FMODE_READ
|FMODE_WRITE
|FMODE_EXEC
);
2299 enum open_claim_type4 claim
= NFS4_OPEN_CLAIM_NULL
;
2300 struct nfs4_label
*olabel
= NULL
;
2303 /* Protect against reboot recovery conflicts */
2305 sp
= nfs4_get_state_owner(server
, cred
, GFP_KERNEL
);
2307 dprintk("nfs4_do_open: nfs4_get_state_owner failed!\n");
2310 status
= nfs4_recover_expired_lease(server
);
2312 goto err_put_state_owner
;
2313 if (dentry
->d_inode
!= NULL
)
2314 nfs4_return_incompatible_delegation(dentry
->d_inode
, fmode
);
2316 if (dentry
->d_inode
)
2317 claim
= NFS4_OPEN_CLAIM_FH
;
2318 opendata
= nfs4_opendata_alloc(dentry
, sp
, fmode
, flags
, sattr
,
2319 label
, claim
, GFP_KERNEL
);
2320 if (opendata
== NULL
)
2321 goto err_put_state_owner
;
2324 olabel
= nfs4_label_alloc(server
, GFP_KERNEL
);
2325 if (IS_ERR(olabel
)) {
2326 status
= PTR_ERR(olabel
);
2327 goto err_opendata_put
;
2331 if (server
->attr_bitmask
[2] & FATTR4_WORD2_MDSTHRESHOLD
) {
2332 if (!opendata
->f_attr
.mdsthreshold
) {
2333 opendata
->f_attr
.mdsthreshold
= pnfs_mdsthreshold_alloc();
2334 if (!opendata
->f_attr
.mdsthreshold
)
2335 goto err_free_label
;
2337 opendata
->o_arg
.open_bitmap
= &nfs4_pnfs_open_bitmap
[0];
2339 if (dentry
->d_inode
!= NULL
)
2340 opendata
->state
= nfs4_get_open_state(dentry
->d_inode
, sp
);
2342 status
= _nfs4_open_and_get_state(opendata
, fmode
, flags
, ctx
);
2344 goto err_free_label
;
2347 if ((opendata
->o_arg
.open_flags
& O_EXCL
) &&
2348 (opendata
->o_arg
.createmode
!= NFS4_CREATE_GUARDED
)) {
2349 nfs4_exclusive_attrset(opendata
, sattr
);
2351 nfs_fattr_init(opendata
->o_res
.f_attr
);
2352 status
= nfs4_do_setattr(state
->inode
, cred
,
2353 opendata
->o_res
.f_attr
, sattr
,
2354 state
, label
, olabel
);
2356 nfs_setattr_update_inode(state
->inode
, sattr
);
2357 nfs_post_op_update_inode(state
->inode
, opendata
->o_res
.f_attr
);
2358 nfs_setsecurity(state
->inode
, opendata
->o_res
.f_attr
, olabel
);
2361 if (opendata
->file_created
)
2362 *opened
|= FILE_CREATED
;
2364 if (pnfs_use_threshold(ctx_th
, opendata
->f_attr
.mdsthreshold
, server
)) {
2365 *ctx_th
= opendata
->f_attr
.mdsthreshold
;
2366 opendata
->f_attr
.mdsthreshold
= NULL
;
2369 nfs4_label_free(olabel
);
2371 nfs4_opendata_put(opendata
);
2372 nfs4_put_state_owner(sp
);
2375 nfs4_label_free(olabel
);
2377 nfs4_opendata_put(opendata
);
2378 err_put_state_owner
:
2379 nfs4_put_state_owner(sp
);
2385 static struct nfs4_state
*nfs4_do_open(struct inode
*dir
,
2386 struct nfs_open_context
*ctx
,
2388 struct iattr
*sattr
,
2389 struct nfs4_label
*label
,
2392 struct nfs_server
*server
= NFS_SERVER(dir
);
2393 struct nfs4_exception exception
= { };
2394 struct nfs4_state
*res
;
2398 status
= _nfs4_do_open(dir
, ctx
, flags
, sattr
, label
, opened
);
2400 trace_nfs4_open_file(ctx
, flags
, status
);
2403 /* NOTE: BAD_SEQID means the server and client disagree about the
2404 * book-keeping w.r.t. state-changing operations
2405 * (OPEN/CLOSE/LOCK/LOCKU...)
2406 * It is actually a sign of a bug on the client or on the server.
2408 * If we receive a BAD_SEQID error in the particular case of
2409 * doing an OPEN, we assume that nfs_increment_open_seqid() will
2410 * have unhashed the old state_owner for us, and that we can
2411 * therefore safely retry using a new one. We should still warn
2412 * the user though...
2414 if (status
== -NFS4ERR_BAD_SEQID
) {
2415 pr_warn_ratelimited("NFS: v4 server %s "
2416 " returned a bad sequence-id error!\n",
2417 NFS_SERVER(dir
)->nfs_client
->cl_hostname
);
2418 exception
.retry
= 1;
2422 * BAD_STATEID on OPEN means that the server cancelled our
2423 * state before it received the OPEN_CONFIRM.
2424 * Recover by retrying the request as per the discussion
2425 * on Page 181 of RFC3530.
2427 if (status
== -NFS4ERR_BAD_STATEID
) {
2428 exception
.retry
= 1;
2431 if (status
== -EAGAIN
) {
2432 /* We must have found a delegation */
2433 exception
.retry
= 1;
2436 if (nfs4_clear_cap_atomic_open_v1(server
, status
, &exception
))
2438 res
= ERR_PTR(nfs4_handle_exception(server
,
2439 status
, &exception
));
2440 } while (exception
.retry
);
2444 static int _nfs4_do_setattr(struct inode
*inode
, struct rpc_cred
*cred
,
2445 struct nfs_fattr
*fattr
, struct iattr
*sattr
,
2446 struct nfs4_state
*state
, struct nfs4_label
*ilabel
,
2447 struct nfs4_label
*olabel
)
2449 struct nfs_server
*server
= NFS_SERVER(inode
);
2450 struct nfs_setattrargs arg
= {
2451 .fh
= NFS_FH(inode
),
2454 .bitmask
= server
->attr_bitmask
,
2457 struct nfs_setattrres res
= {
2462 struct rpc_message msg
= {
2463 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETATTR
],
2468 unsigned long timestamp
= jiffies
;
2473 arg
.bitmask
= nfs4_bitmask(server
, ilabel
);
2475 arg
.bitmask
= nfs4_bitmask(server
, olabel
);
2477 nfs_fattr_init(fattr
);
2479 /* Servers should only apply open mode checks for file size changes */
2480 truncate
= (sattr
->ia_valid
& ATTR_SIZE
) ? true : false;
2481 fmode
= truncate
? FMODE_WRITE
: FMODE_READ
;
2483 if (nfs4_copy_delegation_stateid(&arg
.stateid
, inode
, fmode
)) {
2484 /* Use that stateid */
2485 } else if (truncate
&& state
!= NULL
) {
2486 struct nfs_lockowner lockowner
= {
2487 .l_owner
= current
->files
,
2488 .l_pid
= current
->tgid
,
2490 if (!nfs4_valid_open_stateid(state
))
2492 if (nfs4_select_rw_stateid(&arg
.stateid
, state
, FMODE_WRITE
,
2493 &lockowner
) == -EIO
)
2496 nfs4_stateid_copy(&arg
.stateid
, &zero_stateid
);
2498 status
= nfs4_call_sync(server
->client
, server
, &msg
, &arg
.seq_args
, &res
.seq_res
, 1);
2499 if (status
== 0 && state
!= NULL
)
2500 renew_lease(server
, timestamp
);
2504 static int nfs4_do_setattr(struct inode
*inode
, struct rpc_cred
*cred
,
2505 struct nfs_fattr
*fattr
, struct iattr
*sattr
,
2506 struct nfs4_state
*state
, struct nfs4_label
*ilabel
,
2507 struct nfs4_label
*olabel
)
2509 struct nfs_server
*server
= NFS_SERVER(inode
);
2510 struct nfs4_exception exception
= {
2516 err
= _nfs4_do_setattr(inode
, cred
, fattr
, sattr
, state
, ilabel
, olabel
);
2517 trace_nfs4_setattr(inode
, err
);
2519 case -NFS4ERR_OPENMODE
:
2520 if (!(sattr
->ia_valid
& ATTR_SIZE
)) {
2521 pr_warn_once("NFSv4: server %s is incorrectly "
2522 "applying open mode checks to "
2523 "a SETATTR that is not "
2524 "changing file size.\n",
2525 server
->nfs_client
->cl_hostname
);
2527 if (state
&& !(state
->state
& FMODE_WRITE
)) {
2529 if (sattr
->ia_valid
& ATTR_OPEN
)
2534 err
= nfs4_handle_exception(server
, err
, &exception
);
2535 } while (exception
.retry
);
2540 struct nfs4_closedata
{
2541 struct inode
*inode
;
2542 struct nfs4_state
*state
;
2543 struct nfs_closeargs arg
;
2544 struct nfs_closeres res
;
2545 struct nfs_fattr fattr
;
2546 unsigned long timestamp
;
2551 static void nfs4_free_closedata(void *data
)
2553 struct nfs4_closedata
*calldata
= data
;
2554 struct nfs4_state_owner
*sp
= calldata
->state
->owner
;
2555 struct super_block
*sb
= calldata
->state
->inode
->i_sb
;
2558 pnfs_roc_release(calldata
->state
->inode
);
2559 nfs4_put_open_state(calldata
->state
);
2560 nfs_free_seqid(calldata
->arg
.seqid
);
2561 nfs4_put_state_owner(sp
);
2562 nfs_sb_deactive(sb
);
2566 static void nfs4_close_done(struct rpc_task
*task
, void *data
)
2568 struct nfs4_closedata
*calldata
= data
;
2569 struct nfs4_state
*state
= calldata
->state
;
2570 struct nfs_server
*server
= NFS_SERVER(calldata
->inode
);
2571 nfs4_stateid
*res_stateid
= NULL
;
2573 dprintk("%s: begin!\n", __func__
);
2574 if (!nfs4_sequence_done(task
, &calldata
->res
.seq_res
))
2576 trace_nfs4_close(state
, &calldata
->arg
, &calldata
->res
, task
->tk_status
);
2577 /* hmm. we are done with the inode, and in the process of freeing
2578 * the state_owner. we keep this around to process errors
2580 switch (task
->tk_status
) {
2582 res_stateid
= &calldata
->res
.stateid
;
2583 if (calldata
->arg
.fmode
== 0 && calldata
->roc
)
2584 pnfs_roc_set_barrier(state
->inode
,
2585 calldata
->roc_barrier
);
2586 renew_lease(server
, calldata
->timestamp
);
2588 case -NFS4ERR_ADMIN_REVOKED
:
2589 case -NFS4ERR_STALE_STATEID
:
2590 case -NFS4ERR_OLD_STATEID
:
2591 case -NFS4ERR_BAD_STATEID
:
2592 case -NFS4ERR_EXPIRED
:
2593 if (calldata
->arg
.fmode
== 0)
2596 if (nfs4_async_handle_error(task
, server
, state
, NULL
) == -EAGAIN
) {
2597 rpc_restart_call_prepare(task
);
2601 nfs_clear_open_stateid(state
, res_stateid
, calldata
->arg
.fmode
);
2603 nfs_release_seqid(calldata
->arg
.seqid
);
2604 nfs_refresh_inode(calldata
->inode
, calldata
->res
.fattr
);
2605 dprintk("%s: done, ret = %d!\n", __func__
, task
->tk_status
);
2608 static void nfs4_close_prepare(struct rpc_task
*task
, void *data
)
2610 struct nfs4_closedata
*calldata
= data
;
2611 struct nfs4_state
*state
= calldata
->state
;
2612 struct inode
*inode
= calldata
->inode
;
2613 bool is_rdonly
, is_wronly
, is_rdwr
;
2616 dprintk("%s: begin!\n", __func__
);
2617 if (nfs_wait_on_sequence(calldata
->arg
.seqid
, task
) != 0)
2620 task
->tk_msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_OPEN_DOWNGRADE
];
2621 spin_lock(&state
->owner
->so_lock
);
2622 is_rdwr
= test_bit(NFS_O_RDWR_STATE
, &state
->flags
);
2623 is_rdonly
= test_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
2624 is_wronly
= test_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
2625 /* Calculate the change in open mode */
2626 calldata
->arg
.fmode
= 0;
2627 if (state
->n_rdwr
== 0) {
2628 if (state
->n_rdonly
== 0)
2629 call_close
|= is_rdonly
;
2631 calldata
->arg
.fmode
|= FMODE_READ
;
2632 if (state
->n_wronly
== 0)
2633 call_close
|= is_wronly
;
2635 calldata
->arg
.fmode
|= FMODE_WRITE
;
2637 calldata
->arg
.fmode
|= FMODE_READ
|FMODE_WRITE
;
2639 if (calldata
->arg
.fmode
== 0)
2640 call_close
|= is_rdwr
;
2642 if (!nfs4_valid_open_stateid(state
))
2644 spin_unlock(&state
->owner
->so_lock
);
2647 /* Note: exit _without_ calling nfs4_close_done */
2651 if (calldata
->arg
.fmode
== 0) {
2652 task
->tk_msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_CLOSE
];
2653 if (calldata
->roc
&&
2654 pnfs_roc_drain(inode
, &calldata
->roc_barrier
, task
)) {
2655 nfs_release_seqid(calldata
->arg
.seqid
);
2660 nfs_fattr_init(calldata
->res
.fattr
);
2661 calldata
->timestamp
= jiffies
;
2662 if (nfs4_setup_sequence(NFS_SERVER(inode
),
2663 &calldata
->arg
.seq_args
,
2664 &calldata
->res
.seq_res
,
2666 nfs_release_seqid(calldata
->arg
.seqid
);
2667 dprintk("%s: done!\n", __func__
);
2670 task
->tk_action
= NULL
;
2672 nfs4_sequence_done(task
, &calldata
->res
.seq_res
);
2675 static const struct rpc_call_ops nfs4_close_ops
= {
2676 .rpc_call_prepare
= nfs4_close_prepare
,
2677 .rpc_call_done
= nfs4_close_done
,
2678 .rpc_release
= nfs4_free_closedata
,
2681 static bool nfs4_state_has_opener(struct nfs4_state
*state
)
2683 /* first check existing openers */
2684 if (test_bit(NFS_O_RDONLY_STATE
, &state
->flags
) != 0 &&
2685 state
->n_rdonly
!= 0)
2688 if (test_bit(NFS_O_WRONLY_STATE
, &state
->flags
) != 0 &&
2689 state
->n_wronly
!= 0)
2692 if (test_bit(NFS_O_RDWR_STATE
, &state
->flags
) != 0 &&
2699 static bool nfs4_roc(struct inode
*inode
)
2701 struct nfs_inode
*nfsi
= NFS_I(inode
);
2702 struct nfs_open_context
*ctx
;
2703 struct nfs4_state
*state
;
2705 spin_lock(&inode
->i_lock
);
2706 list_for_each_entry(ctx
, &nfsi
->open_files
, list
) {
2710 if (nfs4_state_has_opener(state
)) {
2711 spin_unlock(&inode
->i_lock
);
2715 spin_unlock(&inode
->i_lock
);
2717 if (nfs4_check_delegation(inode
, FMODE_READ
))
2720 return pnfs_roc(inode
);
2724 * It is possible for data to be read/written from a mem-mapped file
2725 * after the sys_close call (which hits the vfs layer as a flush).
2726 * This means that we can't safely call nfsv4 close on a file until
2727 * the inode is cleared. This in turn means that we are not good
2728 * NFSv4 citizens - we do not indicate to the server to update the file's
2729 * share state even when we are done with one of the three share
2730 * stateid's in the inode.
2732 * NOTE: Caller must be holding the sp->so_owner semaphore!
2734 int nfs4_do_close(struct nfs4_state
*state
, gfp_t gfp_mask
, int wait
)
2736 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
2737 struct nfs4_closedata
*calldata
;
2738 struct nfs4_state_owner
*sp
= state
->owner
;
2739 struct rpc_task
*task
;
2740 struct rpc_message msg
= {
2741 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_CLOSE
],
2742 .rpc_cred
= state
->owner
->so_cred
,
2744 struct rpc_task_setup task_setup_data
= {
2745 .rpc_client
= server
->client
,
2746 .rpc_message
= &msg
,
2747 .callback_ops
= &nfs4_close_ops
,
2748 .workqueue
= nfsiod_workqueue
,
2749 .flags
= RPC_TASK_ASYNC
,
2751 int status
= -ENOMEM
;
2753 nfs4_state_protect(server
->nfs_client
, NFS_SP4_MACH_CRED_CLEANUP
,
2754 &task_setup_data
.rpc_client
, &msg
);
2756 calldata
= kzalloc(sizeof(*calldata
), gfp_mask
);
2757 if (calldata
== NULL
)
2759 nfs4_init_sequence(&calldata
->arg
.seq_args
, &calldata
->res
.seq_res
, 1);
2760 calldata
->inode
= state
->inode
;
2761 calldata
->state
= state
;
2762 calldata
->arg
.fh
= NFS_FH(state
->inode
);
2763 calldata
->arg
.stateid
= &state
->open_stateid
;
2764 /* Serialization for the sequence id */
2765 calldata
->arg
.seqid
= nfs_alloc_seqid(&state
->owner
->so_seqid
, gfp_mask
);
2766 if (calldata
->arg
.seqid
== NULL
)
2767 goto out_free_calldata
;
2768 calldata
->arg
.fmode
= 0;
2769 calldata
->arg
.bitmask
= server
->cache_consistency_bitmask
;
2770 calldata
->res
.fattr
= &calldata
->fattr
;
2771 calldata
->res
.seqid
= calldata
->arg
.seqid
;
2772 calldata
->res
.server
= server
;
2773 calldata
->roc
= nfs4_roc(state
->inode
);
2774 nfs_sb_active(calldata
->inode
->i_sb
);
2776 msg
.rpc_argp
= &calldata
->arg
;
2777 msg
.rpc_resp
= &calldata
->res
;
2778 task_setup_data
.callback_data
= calldata
;
2779 task
= rpc_run_task(&task_setup_data
);
2781 return PTR_ERR(task
);
2784 status
= rpc_wait_for_completion_task(task
);
2790 nfs4_put_open_state(state
);
2791 nfs4_put_state_owner(sp
);
2795 static struct inode
*
2796 nfs4_atomic_open(struct inode
*dir
, struct nfs_open_context
*ctx
,
2797 int open_flags
, struct iattr
*attr
, int *opened
)
2799 struct nfs4_state
*state
;
2800 struct nfs4_label l
= {0, 0, 0, NULL
}, *label
= NULL
;
2802 label
= nfs4_label_init_security(dir
, ctx
->dentry
, attr
, &l
);
2804 /* Protect against concurrent sillydeletes */
2805 state
= nfs4_do_open(dir
, ctx
, open_flags
, attr
, label
, opened
);
2807 nfs4_label_release_security(label
);
2810 return ERR_CAST(state
);
2811 return state
->inode
;
2814 static void nfs4_close_context(struct nfs_open_context
*ctx
, int is_sync
)
2816 if (ctx
->state
== NULL
)
2819 nfs4_close_sync(ctx
->state
, ctx
->mode
);
2821 nfs4_close_state(ctx
->state
, ctx
->mode
);
2824 #define FATTR4_WORD1_NFS40_MASK (2*FATTR4_WORD1_MOUNTED_ON_FILEID - 1UL)
2825 #define FATTR4_WORD2_NFS41_MASK (2*FATTR4_WORD2_SUPPATTR_EXCLCREAT - 1UL)
2826 #define FATTR4_WORD2_NFS42_MASK (2*FATTR4_WORD2_SECURITY_LABEL - 1UL)
2828 static int _nfs4_server_capabilities(struct nfs_server
*server
, struct nfs_fh
*fhandle
)
2830 struct nfs4_server_caps_arg args
= {
2833 struct nfs4_server_caps_res res
= {};
2834 struct rpc_message msg
= {
2835 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SERVER_CAPS
],
2841 status
= nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
2843 /* Sanity check the server answers */
2844 switch (server
->nfs_client
->cl_minorversion
) {
2846 res
.attr_bitmask
[1] &= FATTR4_WORD1_NFS40_MASK
;
2847 res
.attr_bitmask
[2] = 0;
2850 res
.attr_bitmask
[2] &= FATTR4_WORD2_NFS41_MASK
;
2853 res
.attr_bitmask
[2] &= FATTR4_WORD2_NFS42_MASK
;
2855 memcpy(server
->attr_bitmask
, res
.attr_bitmask
, sizeof(server
->attr_bitmask
));
2856 server
->caps
&= ~(NFS_CAP_ACLS
|NFS_CAP_HARDLINKS
|
2857 NFS_CAP_SYMLINKS
|NFS_CAP_FILEID
|
2858 NFS_CAP_MODE
|NFS_CAP_NLINK
|NFS_CAP_OWNER
|
2859 NFS_CAP_OWNER_GROUP
|NFS_CAP_ATIME
|
2860 NFS_CAP_CTIME
|NFS_CAP_MTIME
|
2861 NFS_CAP_SECURITY_LABEL
);
2862 if (res
.attr_bitmask
[0] & FATTR4_WORD0_ACL
&&
2863 res
.acl_bitmask
& ACL4_SUPPORT_ALLOW_ACL
)
2864 server
->caps
|= NFS_CAP_ACLS
;
2865 if (res
.has_links
!= 0)
2866 server
->caps
|= NFS_CAP_HARDLINKS
;
2867 if (res
.has_symlinks
!= 0)
2868 server
->caps
|= NFS_CAP_SYMLINKS
;
2869 if (res
.attr_bitmask
[0] & FATTR4_WORD0_FILEID
)
2870 server
->caps
|= NFS_CAP_FILEID
;
2871 if (res
.attr_bitmask
[1] & FATTR4_WORD1_MODE
)
2872 server
->caps
|= NFS_CAP_MODE
;
2873 if (res
.attr_bitmask
[1] & FATTR4_WORD1_NUMLINKS
)
2874 server
->caps
|= NFS_CAP_NLINK
;
2875 if (res
.attr_bitmask
[1] & FATTR4_WORD1_OWNER
)
2876 server
->caps
|= NFS_CAP_OWNER
;
2877 if (res
.attr_bitmask
[1] & FATTR4_WORD1_OWNER_GROUP
)
2878 server
->caps
|= NFS_CAP_OWNER_GROUP
;
2879 if (res
.attr_bitmask
[1] & FATTR4_WORD1_TIME_ACCESS
)
2880 server
->caps
|= NFS_CAP_ATIME
;
2881 if (res
.attr_bitmask
[1] & FATTR4_WORD1_TIME_METADATA
)
2882 server
->caps
|= NFS_CAP_CTIME
;
2883 if (res
.attr_bitmask
[1] & FATTR4_WORD1_TIME_MODIFY
)
2884 server
->caps
|= NFS_CAP_MTIME
;
2885 #ifdef CONFIG_NFS_V4_SECURITY_LABEL
2886 if (res
.attr_bitmask
[2] & FATTR4_WORD2_SECURITY_LABEL
)
2887 server
->caps
|= NFS_CAP_SECURITY_LABEL
;
2889 memcpy(server
->attr_bitmask_nl
, res
.attr_bitmask
,
2890 sizeof(server
->attr_bitmask
));
2891 server
->attr_bitmask_nl
[2] &= ~FATTR4_WORD2_SECURITY_LABEL
;
2893 memcpy(server
->cache_consistency_bitmask
, res
.attr_bitmask
, sizeof(server
->cache_consistency_bitmask
));
2894 server
->cache_consistency_bitmask
[0] &= FATTR4_WORD0_CHANGE
|FATTR4_WORD0_SIZE
;
2895 server
->cache_consistency_bitmask
[1] &= FATTR4_WORD1_TIME_METADATA
|FATTR4_WORD1_TIME_MODIFY
;
2896 server
->cache_consistency_bitmask
[2] = 0;
2897 server
->acl_bitmask
= res
.acl_bitmask
;
2898 server
->fh_expire_type
= res
.fh_expire_type
;
2904 int nfs4_server_capabilities(struct nfs_server
*server
, struct nfs_fh
*fhandle
)
2906 struct nfs4_exception exception
= { };
2909 err
= nfs4_handle_exception(server
,
2910 _nfs4_server_capabilities(server
, fhandle
),
2912 } while (exception
.retry
);
2916 static int _nfs4_lookup_root(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
2917 struct nfs_fsinfo
*info
)
2920 struct nfs4_lookup_root_arg args
= {
2923 struct nfs4_lookup_res res
= {
2925 .fattr
= info
->fattr
,
2928 struct rpc_message msg
= {
2929 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOOKUP_ROOT
],
2934 bitmask
[0] = nfs4_fattr_bitmap
[0];
2935 bitmask
[1] = nfs4_fattr_bitmap
[1];
2937 * Process the label in the upcoming getfattr
2939 bitmask
[2] = nfs4_fattr_bitmap
[2] & ~FATTR4_WORD2_SECURITY_LABEL
;
2941 nfs_fattr_init(info
->fattr
);
2942 return nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
2945 static int nfs4_lookup_root(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
2946 struct nfs_fsinfo
*info
)
2948 struct nfs4_exception exception
= { };
2951 err
= _nfs4_lookup_root(server
, fhandle
, info
);
2952 trace_nfs4_lookup_root(server
, fhandle
, info
->fattr
, err
);
2955 case -NFS4ERR_WRONGSEC
:
2958 err
= nfs4_handle_exception(server
, err
, &exception
);
2960 } while (exception
.retry
);
2965 static int nfs4_lookup_root_sec(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
2966 struct nfs_fsinfo
*info
, rpc_authflavor_t flavor
)
2968 struct rpc_auth_create_args auth_args
= {
2969 .pseudoflavor
= flavor
,
2971 struct rpc_auth
*auth
;
2974 auth
= rpcauth_create(&auth_args
, server
->client
);
2979 ret
= nfs4_lookup_root(server
, fhandle
, info
);
2985 * Retry pseudoroot lookup with various security flavors. We do this when:
2987 * NFSv4.0: the PUTROOTFH operation returns NFS4ERR_WRONGSEC
2988 * NFSv4.1: the server does not support the SECINFO_NO_NAME operation
2990 * Returns zero on success, or a negative NFS4ERR value, or a
2991 * negative errno value.
2993 static int nfs4_find_root_sec(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
2994 struct nfs_fsinfo
*info
)
2996 /* Per 3530bis 15.33.5 */
2997 static const rpc_authflavor_t flav_array
[] = {
3001 RPC_AUTH_UNIX
, /* courtesy */
3004 int status
= -EPERM
;
3007 if (server
->auth_info
.flavor_len
> 0) {
3008 /* try each flavor specified by user */
3009 for (i
= 0; i
< server
->auth_info
.flavor_len
; i
++) {
3010 status
= nfs4_lookup_root_sec(server
, fhandle
, info
,
3011 server
->auth_info
.flavors
[i
]);
3012 if (status
== -NFS4ERR_WRONGSEC
|| status
== -EACCES
)
3017 /* no flavors specified by user, try default list */
3018 for (i
= 0; i
< ARRAY_SIZE(flav_array
); i
++) {
3019 status
= nfs4_lookup_root_sec(server
, fhandle
, info
,
3021 if (status
== -NFS4ERR_WRONGSEC
|| status
== -EACCES
)
3028 * -EACCESS could mean that the user doesn't have correct permissions
3029 * to access the mount. It could also mean that we tried to mount
3030 * with a gss auth flavor, but rpc.gssd isn't running. Either way,
3031 * existing mount programs don't handle -EACCES very well so it should
3032 * be mapped to -EPERM instead.
3034 if (status
== -EACCES
)
3039 static int nfs4_do_find_root_sec(struct nfs_server
*server
,
3040 struct nfs_fh
*fhandle
, struct nfs_fsinfo
*info
)
3042 int mv
= server
->nfs_client
->cl_minorversion
;
3043 return nfs_v4_minor_ops
[mv
]->find_root_sec(server
, fhandle
, info
);
3047 * nfs4_proc_get_rootfh - get file handle for server's pseudoroot
3048 * @server: initialized nfs_server handle
3049 * @fhandle: we fill in the pseudo-fs root file handle
3050 * @info: we fill in an FSINFO struct
3051 * @auth_probe: probe the auth flavours
3053 * Returns zero on success, or a negative errno.
3055 int nfs4_proc_get_rootfh(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
3056 struct nfs_fsinfo
*info
,
3061 switch (auth_probe
) {
3063 status
= nfs4_lookup_root(server
, fhandle
, info
);
3064 if (status
!= -NFS4ERR_WRONGSEC
)
3067 status
= nfs4_do_find_root_sec(server
, fhandle
, info
);
3071 status
= nfs4_server_capabilities(server
, fhandle
);
3073 status
= nfs4_do_fsinfo(server
, fhandle
, info
);
3075 return nfs4_map_errors(status
);
3078 static int nfs4_proc_get_root(struct nfs_server
*server
, struct nfs_fh
*mntfh
,
3079 struct nfs_fsinfo
*info
)
3082 struct nfs_fattr
*fattr
= info
->fattr
;
3083 struct nfs4_label
*label
= NULL
;
3085 error
= nfs4_server_capabilities(server
, mntfh
);
3087 dprintk("nfs4_get_root: getcaps error = %d\n", -error
);
3091 label
= nfs4_label_alloc(server
, GFP_KERNEL
);
3093 return PTR_ERR(label
);
3095 error
= nfs4_proc_getattr(server
, mntfh
, fattr
, label
);
3097 dprintk("nfs4_get_root: getattr error = %d\n", -error
);
3098 goto err_free_label
;
3101 if (fattr
->valid
& NFS_ATTR_FATTR_FSID
&&
3102 !nfs_fsid_equal(&server
->fsid
, &fattr
->fsid
))
3103 memcpy(&server
->fsid
, &fattr
->fsid
, sizeof(server
->fsid
));
3106 nfs4_label_free(label
);
3112 * Get locations and (maybe) other attributes of a referral.
3113 * Note that we'll actually follow the referral later when
3114 * we detect fsid mismatch in inode revalidation
3116 static int nfs4_get_referral(struct rpc_clnt
*client
, struct inode
*dir
,
3117 const struct qstr
*name
, struct nfs_fattr
*fattr
,
3118 struct nfs_fh
*fhandle
)
3120 int status
= -ENOMEM
;
3121 struct page
*page
= NULL
;
3122 struct nfs4_fs_locations
*locations
= NULL
;
3124 page
= alloc_page(GFP_KERNEL
);
3127 locations
= kmalloc(sizeof(struct nfs4_fs_locations
), GFP_KERNEL
);
3128 if (locations
== NULL
)
3131 status
= nfs4_proc_fs_locations(client
, dir
, name
, locations
, page
);
3136 * If the fsid didn't change, this is a migration event, not a
3137 * referral. Cause us to drop into the exception handler, which
3138 * will kick off migration recovery.
3140 if (nfs_fsid_equal(&NFS_SERVER(dir
)->fsid
, &locations
->fattr
.fsid
)) {
3141 dprintk("%s: server did not return a different fsid for"
3142 " a referral at %s\n", __func__
, name
->name
);
3143 status
= -NFS4ERR_MOVED
;
3146 /* Fixup attributes for the nfs_lookup() call to nfs_fhget() */
3147 nfs_fixup_referral_attributes(&locations
->fattr
);
3149 /* replace the lookup nfs_fattr with the locations nfs_fattr */
3150 memcpy(fattr
, &locations
->fattr
, sizeof(struct nfs_fattr
));
3151 memset(fhandle
, 0, sizeof(struct nfs_fh
));
3159 static int _nfs4_proc_getattr(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
3160 struct nfs_fattr
*fattr
, struct nfs4_label
*label
)
3162 struct nfs4_getattr_arg args
= {
3164 .bitmask
= server
->attr_bitmask
,
3166 struct nfs4_getattr_res res
= {
3171 struct rpc_message msg
= {
3172 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GETATTR
],
3177 args
.bitmask
= nfs4_bitmask(server
, label
);
3179 nfs_fattr_init(fattr
);
3180 return nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
3183 static int nfs4_proc_getattr(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
3184 struct nfs_fattr
*fattr
, struct nfs4_label
*label
)
3186 struct nfs4_exception exception
= { };
3189 err
= _nfs4_proc_getattr(server
, fhandle
, fattr
, label
);
3190 trace_nfs4_getattr(server
, fhandle
, fattr
, err
);
3191 err
= nfs4_handle_exception(server
, err
,
3193 } while (exception
.retry
);
3198 * The file is not closed if it is opened due to the a request to change
3199 * the size of the file. The open call will not be needed once the
3200 * VFS layer lookup-intents are implemented.
3202 * Close is called when the inode is destroyed.
3203 * If we haven't opened the file for O_WRONLY, we
3204 * need to in the size_change case to obtain a stateid.
3207 * Because OPEN is always done by name in nfsv4, it is
3208 * possible that we opened a different file by the same
3209 * name. We can recognize this race condition, but we
3210 * can't do anything about it besides returning an error.
3212 * This will be fixed with VFS changes (lookup-intent).
3215 nfs4_proc_setattr(struct dentry
*dentry
, struct nfs_fattr
*fattr
,
3216 struct iattr
*sattr
)
3218 struct inode
*inode
= dentry
->d_inode
;
3219 struct rpc_cred
*cred
= NULL
;
3220 struct nfs4_state
*state
= NULL
;
3221 struct nfs4_label
*label
= NULL
;
3224 if (pnfs_ld_layoutret_on_setattr(inode
) &&
3225 sattr
->ia_valid
& ATTR_SIZE
&&
3226 sattr
->ia_size
< i_size_read(inode
))
3227 pnfs_commit_and_return_layout(inode
);
3229 nfs_fattr_init(fattr
);
3231 /* Deal with open(O_TRUNC) */
3232 if (sattr
->ia_valid
& ATTR_OPEN
)
3233 sattr
->ia_valid
&= ~(ATTR_MTIME
|ATTR_CTIME
);
3235 /* Optimization: if the end result is no change, don't RPC */
3236 if ((sattr
->ia_valid
& ~(ATTR_FILE
|ATTR_OPEN
)) == 0)
3239 /* Search for an existing open(O_WRITE) file */
3240 if (sattr
->ia_valid
& ATTR_FILE
) {
3241 struct nfs_open_context
*ctx
;
3243 ctx
= nfs_file_open_context(sattr
->ia_file
);
3250 label
= nfs4_label_alloc(NFS_SERVER(inode
), GFP_KERNEL
);
3252 return PTR_ERR(label
);
3254 status
= nfs4_do_setattr(inode
, cred
, fattr
, sattr
, state
, NULL
, label
);
3256 nfs_setattr_update_inode(inode
, sattr
);
3257 nfs_setsecurity(inode
, fattr
, label
);
3259 nfs4_label_free(label
);
3263 static int _nfs4_proc_lookup(struct rpc_clnt
*clnt
, struct inode
*dir
,
3264 const struct qstr
*name
, struct nfs_fh
*fhandle
,
3265 struct nfs_fattr
*fattr
, struct nfs4_label
*label
)
3267 struct nfs_server
*server
= NFS_SERVER(dir
);
3269 struct nfs4_lookup_arg args
= {
3270 .bitmask
= server
->attr_bitmask
,
3271 .dir_fh
= NFS_FH(dir
),
3274 struct nfs4_lookup_res res
= {
3280 struct rpc_message msg
= {
3281 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOOKUP
],
3286 args
.bitmask
= nfs4_bitmask(server
, label
);
3288 nfs_fattr_init(fattr
);
3290 dprintk("NFS call lookup %s\n", name
->name
);
3291 status
= nfs4_call_sync(clnt
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
3292 dprintk("NFS reply lookup: %d\n", status
);
3296 static void nfs_fixup_secinfo_attributes(struct nfs_fattr
*fattr
)
3298 fattr
->valid
|= NFS_ATTR_FATTR_TYPE
| NFS_ATTR_FATTR_MODE
|
3299 NFS_ATTR_FATTR_NLINK
| NFS_ATTR_FATTR_MOUNTPOINT
;
3300 fattr
->mode
= S_IFDIR
| S_IRUGO
| S_IXUGO
;
3304 static int nfs4_proc_lookup_common(struct rpc_clnt
**clnt
, struct inode
*dir
,
3305 struct qstr
*name
, struct nfs_fh
*fhandle
,
3306 struct nfs_fattr
*fattr
, struct nfs4_label
*label
)
3308 struct nfs4_exception exception
= { };
3309 struct rpc_clnt
*client
= *clnt
;
3312 err
= _nfs4_proc_lookup(client
, dir
, name
, fhandle
, fattr
, label
);
3313 trace_nfs4_lookup(dir
, name
, err
);
3315 case -NFS4ERR_BADNAME
:
3318 case -NFS4ERR_MOVED
:
3319 err
= nfs4_get_referral(client
, dir
, name
, fattr
, fhandle
);
3321 case -NFS4ERR_WRONGSEC
:
3323 if (client
!= *clnt
)
3325 client
= nfs4_negotiate_security(client
, dir
, name
);
3327 return PTR_ERR(client
);
3329 exception
.retry
= 1;
3332 err
= nfs4_handle_exception(NFS_SERVER(dir
), err
, &exception
);
3334 } while (exception
.retry
);
3339 else if (client
!= *clnt
)
3340 rpc_shutdown_client(client
);
3345 static int nfs4_proc_lookup(struct inode
*dir
, struct qstr
*name
,
3346 struct nfs_fh
*fhandle
, struct nfs_fattr
*fattr
,
3347 struct nfs4_label
*label
)
3350 struct rpc_clnt
*client
= NFS_CLIENT(dir
);
3352 status
= nfs4_proc_lookup_common(&client
, dir
, name
, fhandle
, fattr
, label
);
3353 if (client
!= NFS_CLIENT(dir
)) {
3354 rpc_shutdown_client(client
);
3355 nfs_fixup_secinfo_attributes(fattr
);
3361 nfs4_proc_lookup_mountpoint(struct inode
*dir
, struct qstr
*name
,
3362 struct nfs_fh
*fhandle
, struct nfs_fattr
*fattr
)
3364 struct rpc_clnt
*client
= NFS_CLIENT(dir
);
3367 status
= nfs4_proc_lookup_common(&client
, dir
, name
, fhandle
, fattr
, NULL
);
3369 return ERR_PTR(status
);
3370 return (client
== NFS_CLIENT(dir
)) ? rpc_clone_client(client
) : client
;
3373 static int _nfs4_proc_access(struct inode
*inode
, struct nfs_access_entry
*entry
)
3375 struct nfs_server
*server
= NFS_SERVER(inode
);
3376 struct nfs4_accessargs args
= {
3377 .fh
= NFS_FH(inode
),
3378 .bitmask
= server
->cache_consistency_bitmask
,
3380 struct nfs4_accessres res
= {
3383 struct rpc_message msg
= {
3384 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_ACCESS
],
3387 .rpc_cred
= entry
->cred
,
3389 int mode
= entry
->mask
;
3393 * Determine which access bits we want to ask for...
3395 if (mode
& MAY_READ
)
3396 args
.access
|= NFS4_ACCESS_READ
;
3397 if (S_ISDIR(inode
->i_mode
)) {
3398 if (mode
& MAY_WRITE
)
3399 args
.access
|= NFS4_ACCESS_MODIFY
| NFS4_ACCESS_EXTEND
| NFS4_ACCESS_DELETE
;
3400 if (mode
& MAY_EXEC
)
3401 args
.access
|= NFS4_ACCESS_LOOKUP
;
3403 if (mode
& MAY_WRITE
)
3404 args
.access
|= NFS4_ACCESS_MODIFY
| NFS4_ACCESS_EXTEND
;
3405 if (mode
& MAY_EXEC
)
3406 args
.access
|= NFS4_ACCESS_EXECUTE
;
3409 res
.fattr
= nfs_alloc_fattr();
3410 if (res
.fattr
== NULL
)
3413 status
= nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
3415 nfs_access_set_mask(entry
, res
.access
);
3416 nfs_refresh_inode(inode
, res
.fattr
);
3418 nfs_free_fattr(res
.fattr
);
3422 static int nfs4_proc_access(struct inode
*inode
, struct nfs_access_entry
*entry
)
3424 struct nfs4_exception exception
= { };
3427 err
= _nfs4_proc_access(inode
, entry
);
3428 trace_nfs4_access(inode
, err
);
3429 err
= nfs4_handle_exception(NFS_SERVER(inode
), err
,
3431 } while (exception
.retry
);
3436 * TODO: For the time being, we don't try to get any attributes
3437 * along with any of the zero-copy operations READ, READDIR,
3440 * In the case of the first three, we want to put the GETATTR
3441 * after the read-type operation -- this is because it is hard
3442 * to predict the length of a GETATTR response in v4, and thus
3443 * align the READ data correctly. This means that the GETATTR
3444 * may end up partially falling into the page cache, and we should
3445 * shift it into the 'tail' of the xdr_buf before processing.
3446 * To do this efficiently, we need to know the total length
3447 * of data received, which doesn't seem to be available outside
3450 * In the case of WRITE, we also want to put the GETATTR after
3451 * the operation -- in this case because we want to make sure
3452 * we get the post-operation mtime and size.
3454 * Both of these changes to the XDR layer would in fact be quite
3455 * minor, but I decided to leave them for a subsequent patch.
3457 static int _nfs4_proc_readlink(struct inode
*inode
, struct page
*page
,
3458 unsigned int pgbase
, unsigned int pglen
)
3460 struct nfs4_readlink args
= {
3461 .fh
= NFS_FH(inode
),
3466 struct nfs4_readlink_res res
;
3467 struct rpc_message msg
= {
3468 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_READLINK
],
3473 return nfs4_call_sync(NFS_SERVER(inode
)->client
, NFS_SERVER(inode
), &msg
, &args
.seq_args
, &res
.seq_res
, 0);
3476 static int nfs4_proc_readlink(struct inode
*inode
, struct page
*page
,
3477 unsigned int pgbase
, unsigned int pglen
)
3479 struct nfs4_exception exception
= { };
3482 err
= _nfs4_proc_readlink(inode
, page
, pgbase
, pglen
);
3483 trace_nfs4_readlink(inode
, err
);
3484 err
= nfs4_handle_exception(NFS_SERVER(inode
), err
,
3486 } while (exception
.retry
);
3491 * This is just for mknod. open(O_CREAT) will always do ->open_context().
3494 nfs4_proc_create(struct inode
*dir
, struct dentry
*dentry
, struct iattr
*sattr
,
3497 struct nfs4_label l
, *ilabel
= NULL
;
3498 struct nfs_open_context
*ctx
;
3499 struct nfs4_state
*state
;
3503 ctx
= alloc_nfs_open_context(dentry
, FMODE_READ
);
3505 return PTR_ERR(ctx
);
3507 ilabel
= nfs4_label_init_security(dir
, dentry
, sattr
, &l
);
3509 sattr
->ia_mode
&= ~current_umask();
3510 state
= nfs4_do_open(dir
, ctx
, flags
, sattr
, ilabel
, &opened
);
3511 if (IS_ERR(state
)) {
3512 status
= PTR_ERR(state
);
3516 nfs4_label_release_security(ilabel
);
3517 put_nfs_open_context(ctx
);
3521 static int _nfs4_proc_remove(struct inode
*dir
, struct qstr
*name
)
3523 struct nfs_server
*server
= NFS_SERVER(dir
);
3524 struct nfs_removeargs args
= {
3528 struct nfs_removeres res
= {
3531 struct rpc_message msg
= {
3532 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_REMOVE
],
3538 status
= nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 1);
3540 update_changeattr(dir
, &res
.cinfo
);
3544 static int nfs4_proc_remove(struct inode
*dir
, struct qstr
*name
)
3546 struct nfs4_exception exception
= { };
3549 err
= _nfs4_proc_remove(dir
, name
);
3550 trace_nfs4_remove(dir
, name
, err
);
3551 err
= nfs4_handle_exception(NFS_SERVER(dir
), err
,
3553 } while (exception
.retry
);
3557 static void nfs4_proc_unlink_setup(struct rpc_message
*msg
, struct inode
*dir
)
3559 struct nfs_server
*server
= NFS_SERVER(dir
);
3560 struct nfs_removeargs
*args
= msg
->rpc_argp
;
3561 struct nfs_removeres
*res
= msg
->rpc_resp
;
3563 res
->server
= server
;
3564 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_REMOVE
];
3565 nfs4_init_sequence(&args
->seq_args
, &res
->seq_res
, 1);
3567 nfs_fattr_init(res
->dir_attr
);
3570 static void nfs4_proc_unlink_rpc_prepare(struct rpc_task
*task
, struct nfs_unlinkdata
*data
)
3572 nfs4_setup_sequence(NFS_SERVER(data
->dir
),
3573 &data
->args
.seq_args
,
3578 static int nfs4_proc_unlink_done(struct rpc_task
*task
, struct inode
*dir
)
3580 struct nfs_unlinkdata
*data
= task
->tk_calldata
;
3581 struct nfs_removeres
*res
= &data
->res
;
3583 if (!nfs4_sequence_done(task
, &res
->seq_res
))
3585 if (nfs4_async_handle_error(task
, res
->server
, NULL
,
3586 &data
->timeout
) == -EAGAIN
)
3588 update_changeattr(dir
, &res
->cinfo
);
3592 static void nfs4_proc_rename_setup(struct rpc_message
*msg
, struct inode
*dir
)
3594 struct nfs_server
*server
= NFS_SERVER(dir
);
3595 struct nfs_renameargs
*arg
= msg
->rpc_argp
;
3596 struct nfs_renameres
*res
= msg
->rpc_resp
;
3598 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RENAME
];
3599 res
->server
= server
;
3600 nfs4_init_sequence(&arg
->seq_args
, &res
->seq_res
, 1);
3603 static void nfs4_proc_rename_rpc_prepare(struct rpc_task
*task
, struct nfs_renamedata
*data
)
3605 nfs4_setup_sequence(NFS_SERVER(data
->old_dir
),
3606 &data
->args
.seq_args
,
3611 static int nfs4_proc_rename_done(struct rpc_task
*task
, struct inode
*old_dir
,
3612 struct inode
*new_dir
)
3614 struct nfs_renamedata
*data
= task
->tk_calldata
;
3615 struct nfs_renameres
*res
= &data
->res
;
3617 if (!nfs4_sequence_done(task
, &res
->seq_res
))
3619 if (nfs4_async_handle_error(task
, res
->server
, NULL
, &data
->timeout
) == -EAGAIN
)
3622 update_changeattr(old_dir
, &res
->old_cinfo
);
3623 update_changeattr(new_dir
, &res
->new_cinfo
);
3627 static int _nfs4_proc_link(struct inode
*inode
, struct inode
*dir
, struct qstr
*name
)
3629 struct nfs_server
*server
= NFS_SERVER(inode
);
3630 struct nfs4_link_arg arg
= {
3631 .fh
= NFS_FH(inode
),
3632 .dir_fh
= NFS_FH(dir
),
3634 .bitmask
= server
->attr_bitmask
,
3636 struct nfs4_link_res res
= {
3640 struct rpc_message msg
= {
3641 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LINK
],
3645 int status
= -ENOMEM
;
3647 res
.fattr
= nfs_alloc_fattr();
3648 if (res
.fattr
== NULL
)
3651 res
.label
= nfs4_label_alloc(server
, GFP_KERNEL
);
3652 if (IS_ERR(res
.label
)) {
3653 status
= PTR_ERR(res
.label
);
3656 arg
.bitmask
= nfs4_bitmask(server
, res
.label
);
3658 status
= nfs4_call_sync(server
->client
, server
, &msg
, &arg
.seq_args
, &res
.seq_res
, 1);
3660 update_changeattr(dir
, &res
.cinfo
);
3661 status
= nfs_post_op_update_inode(inode
, res
.fattr
);
3663 nfs_setsecurity(inode
, res
.fattr
, res
.label
);
3667 nfs4_label_free(res
.label
);
3670 nfs_free_fattr(res
.fattr
);
3674 static int nfs4_proc_link(struct inode
*inode
, struct inode
*dir
, struct qstr
*name
)
3676 struct nfs4_exception exception
= { };
3679 err
= nfs4_handle_exception(NFS_SERVER(inode
),
3680 _nfs4_proc_link(inode
, dir
, name
),
3682 } while (exception
.retry
);
3686 struct nfs4_createdata
{
3687 struct rpc_message msg
;
3688 struct nfs4_create_arg arg
;
3689 struct nfs4_create_res res
;
3691 struct nfs_fattr fattr
;
3692 struct nfs4_label
*label
;
3695 static struct nfs4_createdata
*nfs4_alloc_createdata(struct inode
*dir
,
3696 struct qstr
*name
, struct iattr
*sattr
, u32 ftype
)
3698 struct nfs4_createdata
*data
;
3700 data
= kzalloc(sizeof(*data
), GFP_KERNEL
);
3702 struct nfs_server
*server
= NFS_SERVER(dir
);
3704 data
->label
= nfs4_label_alloc(server
, GFP_KERNEL
);
3705 if (IS_ERR(data
->label
))
3708 data
->msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_CREATE
];
3709 data
->msg
.rpc_argp
= &data
->arg
;
3710 data
->msg
.rpc_resp
= &data
->res
;
3711 data
->arg
.dir_fh
= NFS_FH(dir
);
3712 data
->arg
.server
= server
;
3713 data
->arg
.name
= name
;
3714 data
->arg
.attrs
= sattr
;
3715 data
->arg
.ftype
= ftype
;
3716 data
->arg
.bitmask
= nfs4_bitmask(server
, data
->label
);
3717 data
->res
.server
= server
;
3718 data
->res
.fh
= &data
->fh
;
3719 data
->res
.fattr
= &data
->fattr
;
3720 data
->res
.label
= data
->label
;
3721 nfs_fattr_init(data
->res
.fattr
);
3729 static int nfs4_do_create(struct inode
*dir
, struct dentry
*dentry
, struct nfs4_createdata
*data
)
3731 int status
= nfs4_call_sync(NFS_SERVER(dir
)->client
, NFS_SERVER(dir
), &data
->msg
,
3732 &data
->arg
.seq_args
, &data
->res
.seq_res
, 1);
3734 update_changeattr(dir
, &data
->res
.dir_cinfo
);
3735 status
= nfs_instantiate(dentry
, data
->res
.fh
, data
->res
.fattr
, data
->res
.label
);
3740 static void nfs4_free_createdata(struct nfs4_createdata
*data
)
3742 nfs4_label_free(data
->label
);
3746 static int _nfs4_proc_symlink(struct inode
*dir
, struct dentry
*dentry
,
3747 struct page
*page
, unsigned int len
, struct iattr
*sattr
,
3748 struct nfs4_label
*label
)
3750 struct nfs4_createdata
*data
;
3751 int status
= -ENAMETOOLONG
;
3753 if (len
> NFS4_MAXPATHLEN
)
3757 data
= nfs4_alloc_createdata(dir
, &dentry
->d_name
, sattr
, NF4LNK
);
3761 data
->msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SYMLINK
];
3762 data
->arg
.u
.symlink
.pages
= &page
;
3763 data
->arg
.u
.symlink
.len
= len
;
3764 data
->arg
.label
= label
;
3766 status
= nfs4_do_create(dir
, dentry
, data
);
3768 nfs4_free_createdata(data
);
3773 static int nfs4_proc_symlink(struct inode
*dir
, struct dentry
*dentry
,
3774 struct page
*page
, unsigned int len
, struct iattr
*sattr
)
3776 struct nfs4_exception exception
= { };
3777 struct nfs4_label l
, *label
= NULL
;
3780 label
= nfs4_label_init_security(dir
, dentry
, sattr
, &l
);
3783 err
= _nfs4_proc_symlink(dir
, dentry
, page
, len
, sattr
, label
);
3784 trace_nfs4_symlink(dir
, &dentry
->d_name
, err
);
3785 err
= nfs4_handle_exception(NFS_SERVER(dir
), err
,
3787 } while (exception
.retry
);
3789 nfs4_label_release_security(label
);
3793 static int _nfs4_proc_mkdir(struct inode
*dir
, struct dentry
*dentry
,
3794 struct iattr
*sattr
, struct nfs4_label
*label
)
3796 struct nfs4_createdata
*data
;
3797 int status
= -ENOMEM
;
3799 data
= nfs4_alloc_createdata(dir
, &dentry
->d_name
, sattr
, NF4DIR
);
3803 data
->arg
.label
= label
;
3804 status
= nfs4_do_create(dir
, dentry
, data
);
3806 nfs4_free_createdata(data
);
3811 static int nfs4_proc_mkdir(struct inode
*dir
, struct dentry
*dentry
,
3812 struct iattr
*sattr
)
3814 struct nfs4_exception exception
= { };
3815 struct nfs4_label l
, *label
= NULL
;
3818 label
= nfs4_label_init_security(dir
, dentry
, sattr
, &l
);
3820 sattr
->ia_mode
&= ~current_umask();
3822 err
= _nfs4_proc_mkdir(dir
, dentry
, sattr
, label
);
3823 trace_nfs4_mkdir(dir
, &dentry
->d_name
, err
);
3824 err
= nfs4_handle_exception(NFS_SERVER(dir
), err
,
3826 } while (exception
.retry
);
3827 nfs4_label_release_security(label
);
3832 static int _nfs4_proc_readdir(struct dentry
*dentry
, struct rpc_cred
*cred
,
3833 u64 cookie
, struct page
**pages
, unsigned int count
, int plus
)
3835 struct inode
*dir
= dentry
->d_inode
;
3836 struct nfs4_readdir_arg args
= {
3841 .bitmask
= NFS_SERVER(dentry
->d_inode
)->attr_bitmask
,
3844 struct nfs4_readdir_res res
;
3845 struct rpc_message msg
= {
3846 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_READDIR
],
3853 dprintk("%s: dentry = %pd2, cookie = %Lu\n", __func__
,
3855 (unsigned long long)cookie
);
3856 nfs4_setup_readdir(cookie
, NFS_I(dir
)->cookieverf
, dentry
, &args
);
3857 res
.pgbase
= args
.pgbase
;
3858 status
= nfs4_call_sync(NFS_SERVER(dir
)->client
, NFS_SERVER(dir
), &msg
, &args
.seq_args
, &res
.seq_res
, 0);
3860 memcpy(NFS_I(dir
)->cookieverf
, res
.verifier
.data
, NFS4_VERIFIER_SIZE
);
3861 status
+= args
.pgbase
;
3864 nfs_invalidate_atime(dir
);
3866 dprintk("%s: returns %d\n", __func__
, status
);
3870 static int nfs4_proc_readdir(struct dentry
*dentry
, struct rpc_cred
*cred
,
3871 u64 cookie
, struct page
**pages
, unsigned int count
, int plus
)
3873 struct nfs4_exception exception
= { };
3876 err
= _nfs4_proc_readdir(dentry
, cred
, cookie
,
3877 pages
, count
, plus
);
3878 trace_nfs4_readdir(dentry
->d_inode
, err
);
3879 err
= nfs4_handle_exception(NFS_SERVER(dentry
->d_inode
), err
,
3881 } while (exception
.retry
);
3885 static int _nfs4_proc_mknod(struct inode
*dir
, struct dentry
*dentry
,
3886 struct iattr
*sattr
, struct nfs4_label
*label
, dev_t rdev
)
3888 struct nfs4_createdata
*data
;
3889 int mode
= sattr
->ia_mode
;
3890 int status
= -ENOMEM
;
3892 data
= nfs4_alloc_createdata(dir
, &dentry
->d_name
, sattr
, NF4SOCK
);
3897 data
->arg
.ftype
= NF4FIFO
;
3898 else if (S_ISBLK(mode
)) {
3899 data
->arg
.ftype
= NF4BLK
;
3900 data
->arg
.u
.device
.specdata1
= MAJOR(rdev
);
3901 data
->arg
.u
.device
.specdata2
= MINOR(rdev
);
3903 else if (S_ISCHR(mode
)) {
3904 data
->arg
.ftype
= NF4CHR
;
3905 data
->arg
.u
.device
.specdata1
= MAJOR(rdev
);
3906 data
->arg
.u
.device
.specdata2
= MINOR(rdev
);
3907 } else if (!S_ISSOCK(mode
)) {
3912 data
->arg
.label
= label
;
3913 status
= nfs4_do_create(dir
, dentry
, data
);
3915 nfs4_free_createdata(data
);
3920 static int nfs4_proc_mknod(struct inode
*dir
, struct dentry
*dentry
,
3921 struct iattr
*sattr
, dev_t rdev
)
3923 struct nfs4_exception exception
= { };
3924 struct nfs4_label l
, *label
= NULL
;
3927 label
= nfs4_label_init_security(dir
, dentry
, sattr
, &l
);
3929 sattr
->ia_mode
&= ~current_umask();
3931 err
= _nfs4_proc_mknod(dir
, dentry
, sattr
, label
, rdev
);
3932 trace_nfs4_mknod(dir
, &dentry
->d_name
, err
);
3933 err
= nfs4_handle_exception(NFS_SERVER(dir
), err
,
3935 } while (exception
.retry
);
3937 nfs4_label_release_security(label
);
3942 static int _nfs4_proc_statfs(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
3943 struct nfs_fsstat
*fsstat
)
3945 struct nfs4_statfs_arg args
= {
3947 .bitmask
= server
->attr_bitmask
,
3949 struct nfs4_statfs_res res
= {
3952 struct rpc_message msg
= {
3953 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_STATFS
],
3958 nfs_fattr_init(fsstat
->fattr
);
3959 return nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
3962 static int nfs4_proc_statfs(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fsstat
*fsstat
)
3964 struct nfs4_exception exception
= { };
3967 err
= nfs4_handle_exception(server
,
3968 _nfs4_proc_statfs(server
, fhandle
, fsstat
),
3970 } while (exception
.retry
);
3974 static int _nfs4_do_fsinfo(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
3975 struct nfs_fsinfo
*fsinfo
)
3977 struct nfs4_fsinfo_arg args
= {
3979 .bitmask
= server
->attr_bitmask
,
3981 struct nfs4_fsinfo_res res
= {
3984 struct rpc_message msg
= {
3985 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_FSINFO
],
3990 return nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
3993 static int nfs4_do_fsinfo(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fsinfo
*fsinfo
)
3995 struct nfs4_exception exception
= { };
3996 unsigned long now
= jiffies
;
4000 err
= _nfs4_do_fsinfo(server
, fhandle
, fsinfo
);
4001 trace_nfs4_fsinfo(server
, fhandle
, fsinfo
->fattr
, err
);
4003 struct nfs_client
*clp
= server
->nfs_client
;
4005 spin_lock(&clp
->cl_lock
);
4006 clp
->cl_lease_time
= fsinfo
->lease_time
* HZ
;
4007 clp
->cl_last_renewal
= now
;
4008 spin_unlock(&clp
->cl_lock
);
4011 err
= nfs4_handle_exception(server
, err
, &exception
);
4012 } while (exception
.retry
);
4016 static int nfs4_proc_fsinfo(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fsinfo
*fsinfo
)
4020 nfs_fattr_init(fsinfo
->fattr
);
4021 error
= nfs4_do_fsinfo(server
, fhandle
, fsinfo
);
4023 /* block layout checks this! */
4024 server
->pnfs_blksize
= fsinfo
->blksize
;
4025 set_pnfs_layoutdriver(server
, fhandle
, fsinfo
->layouttype
);
4031 static int _nfs4_proc_pathconf(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
4032 struct nfs_pathconf
*pathconf
)
4034 struct nfs4_pathconf_arg args
= {
4036 .bitmask
= server
->attr_bitmask
,
4038 struct nfs4_pathconf_res res
= {
4039 .pathconf
= pathconf
,
4041 struct rpc_message msg
= {
4042 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_PATHCONF
],
4047 /* None of the pathconf attributes are mandatory to implement */
4048 if ((args
.bitmask
[0] & nfs4_pathconf_bitmap
[0]) == 0) {
4049 memset(pathconf
, 0, sizeof(*pathconf
));
4053 nfs_fattr_init(pathconf
->fattr
);
4054 return nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
4057 static int nfs4_proc_pathconf(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
4058 struct nfs_pathconf
*pathconf
)
4060 struct nfs4_exception exception
= { };
4064 err
= nfs4_handle_exception(server
,
4065 _nfs4_proc_pathconf(server
, fhandle
, pathconf
),
4067 } while (exception
.retry
);
4071 int nfs4_set_rw_stateid(nfs4_stateid
*stateid
,
4072 const struct nfs_open_context
*ctx
,
4073 const struct nfs_lock_context
*l_ctx
,
4076 const struct nfs_lockowner
*lockowner
= NULL
;
4079 lockowner
= &l_ctx
->lockowner
;
4080 return nfs4_select_rw_stateid(stateid
, ctx
->state
, fmode
, lockowner
);
4082 EXPORT_SYMBOL_GPL(nfs4_set_rw_stateid
);
4084 static bool nfs4_stateid_is_current(nfs4_stateid
*stateid
,
4085 const struct nfs_open_context
*ctx
,
4086 const struct nfs_lock_context
*l_ctx
,
4089 nfs4_stateid current_stateid
;
4091 /* If the current stateid represents a lost lock, then exit */
4092 if (nfs4_set_rw_stateid(¤t_stateid
, ctx
, l_ctx
, fmode
) == -EIO
)
4094 return nfs4_stateid_match(stateid
, ¤t_stateid
);
4097 static bool nfs4_error_stateid_expired(int err
)
4100 case -NFS4ERR_DELEG_REVOKED
:
4101 case -NFS4ERR_ADMIN_REVOKED
:
4102 case -NFS4ERR_BAD_STATEID
:
4103 case -NFS4ERR_STALE_STATEID
:
4104 case -NFS4ERR_OLD_STATEID
:
4105 case -NFS4ERR_OPENMODE
:
4106 case -NFS4ERR_EXPIRED
:
4112 void __nfs4_read_done_cb(struct nfs_pgio_header
*hdr
)
4114 nfs_invalidate_atime(hdr
->inode
);
4117 static int nfs4_read_done_cb(struct rpc_task
*task
, struct nfs_pgio_header
*hdr
)
4119 struct nfs_server
*server
= NFS_SERVER(hdr
->inode
);
4121 trace_nfs4_read(hdr
, task
->tk_status
);
4122 if (nfs4_async_handle_error(task
, server
,
4123 hdr
->args
.context
->state
,
4125 rpc_restart_call_prepare(task
);
4129 __nfs4_read_done_cb(hdr
);
4130 if (task
->tk_status
> 0)
4131 renew_lease(server
, hdr
->timestamp
);
4135 static bool nfs4_read_stateid_changed(struct rpc_task
*task
,
4136 struct nfs_pgio_args
*args
)
4139 if (!nfs4_error_stateid_expired(task
->tk_status
) ||
4140 nfs4_stateid_is_current(&args
->stateid
,
4145 rpc_restart_call_prepare(task
);
4149 static int nfs4_read_done(struct rpc_task
*task
, struct nfs_pgio_header
*hdr
)
4152 dprintk("--> %s\n", __func__
);
4154 if (!nfs4_sequence_done(task
, &hdr
->res
.seq_res
))
4156 if (nfs4_read_stateid_changed(task
, &hdr
->args
))
4158 return hdr
->pgio_done_cb
? hdr
->pgio_done_cb(task
, hdr
) :
4159 nfs4_read_done_cb(task
, hdr
);
4162 static void nfs4_proc_read_setup(struct nfs_pgio_header
*hdr
,
4163 struct rpc_message
*msg
)
4165 hdr
->timestamp
= jiffies
;
4166 hdr
->pgio_done_cb
= nfs4_read_done_cb
;
4167 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_READ
];
4168 nfs4_init_sequence(&hdr
->args
.seq_args
, &hdr
->res
.seq_res
, 0);
4171 static int nfs4_proc_pgio_rpc_prepare(struct rpc_task
*task
,
4172 struct nfs_pgio_header
*hdr
)
4174 if (nfs4_setup_sequence(NFS_SERVER(hdr
->inode
),
4175 &hdr
->args
.seq_args
,
4179 if (nfs4_set_rw_stateid(&hdr
->args
.stateid
, hdr
->args
.context
,
4180 hdr
->args
.lock_context
,
4181 hdr
->rw_ops
->rw_mode
) == -EIO
)
4183 if (unlikely(test_bit(NFS_CONTEXT_BAD
, &hdr
->args
.context
->flags
)))
4188 static int nfs4_write_done_cb(struct rpc_task
*task
,
4189 struct nfs_pgio_header
*hdr
)
4191 struct inode
*inode
= hdr
->inode
;
4193 trace_nfs4_write(hdr
, task
->tk_status
);
4194 if (nfs4_async_handle_error(task
, NFS_SERVER(inode
),
4195 hdr
->args
.context
->state
,
4197 rpc_restart_call_prepare(task
);
4200 if (task
->tk_status
>= 0) {
4201 renew_lease(NFS_SERVER(inode
), hdr
->timestamp
);
4202 nfs_post_op_update_inode_force_wcc(inode
, &hdr
->fattr
);
4207 static bool nfs4_write_stateid_changed(struct rpc_task
*task
,
4208 struct nfs_pgio_args
*args
)
4211 if (!nfs4_error_stateid_expired(task
->tk_status
) ||
4212 nfs4_stateid_is_current(&args
->stateid
,
4217 rpc_restart_call_prepare(task
);
4221 static int nfs4_write_done(struct rpc_task
*task
, struct nfs_pgio_header
*hdr
)
4223 if (!nfs4_sequence_done(task
, &hdr
->res
.seq_res
))
4225 if (nfs4_write_stateid_changed(task
, &hdr
->args
))
4227 return hdr
->pgio_done_cb
? hdr
->pgio_done_cb(task
, hdr
) :
4228 nfs4_write_done_cb(task
, hdr
);
4232 bool nfs4_write_need_cache_consistency_data(struct nfs_pgio_header
*hdr
)
4234 /* Don't request attributes for pNFS or O_DIRECT writes */
4235 if (hdr
->ds_clp
!= NULL
|| hdr
->dreq
!= NULL
)
4237 /* Otherwise, request attributes if and only if we don't hold
4240 return nfs4_have_delegation(hdr
->inode
, FMODE_READ
) == 0;
4243 static void nfs4_proc_write_setup(struct nfs_pgio_header
*hdr
,
4244 struct rpc_message
*msg
)
4246 struct nfs_server
*server
= NFS_SERVER(hdr
->inode
);
4248 if (!nfs4_write_need_cache_consistency_data(hdr
)) {
4249 hdr
->args
.bitmask
= NULL
;
4250 hdr
->res
.fattr
= NULL
;
4252 hdr
->args
.bitmask
= server
->cache_consistency_bitmask
;
4254 if (!hdr
->pgio_done_cb
)
4255 hdr
->pgio_done_cb
= nfs4_write_done_cb
;
4256 hdr
->res
.server
= server
;
4257 hdr
->timestamp
= jiffies
;
4259 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_WRITE
];
4260 nfs4_init_sequence(&hdr
->args
.seq_args
, &hdr
->res
.seq_res
, 1);
4263 static void nfs4_proc_commit_rpc_prepare(struct rpc_task
*task
, struct nfs_commit_data
*data
)
4265 nfs4_setup_sequence(NFS_SERVER(data
->inode
),
4266 &data
->args
.seq_args
,
4271 static int nfs4_commit_done_cb(struct rpc_task
*task
, struct nfs_commit_data
*data
)
4273 struct inode
*inode
= data
->inode
;
4275 trace_nfs4_commit(data
, task
->tk_status
);
4276 if (nfs4_async_handle_error(task
, NFS_SERVER(inode
),
4277 NULL
, NULL
) == -EAGAIN
) {
4278 rpc_restart_call_prepare(task
);
4284 static int nfs4_commit_done(struct rpc_task
*task
, struct nfs_commit_data
*data
)
4286 if (!nfs4_sequence_done(task
, &data
->res
.seq_res
))
4288 return data
->commit_done_cb(task
, data
);
4291 static void nfs4_proc_commit_setup(struct nfs_commit_data
*data
, struct rpc_message
*msg
)
4293 struct nfs_server
*server
= NFS_SERVER(data
->inode
);
4295 if (data
->commit_done_cb
== NULL
)
4296 data
->commit_done_cb
= nfs4_commit_done_cb
;
4297 data
->res
.server
= server
;
4298 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_COMMIT
];
4299 nfs4_init_sequence(&data
->args
.seq_args
, &data
->res
.seq_res
, 1);
4302 struct nfs4_renewdata
{
4303 struct nfs_client
*client
;
4304 unsigned long timestamp
;
4308 * nfs4_proc_async_renew(): This is not one of the nfs_rpc_ops; it is a special
4309 * standalone procedure for queueing an asynchronous RENEW.
4311 static void nfs4_renew_release(void *calldata
)
4313 struct nfs4_renewdata
*data
= calldata
;
4314 struct nfs_client
*clp
= data
->client
;
4316 if (atomic_read(&clp
->cl_count
) > 1)
4317 nfs4_schedule_state_renewal(clp
);
4318 nfs_put_client(clp
);
4322 static void nfs4_renew_done(struct rpc_task
*task
, void *calldata
)
4324 struct nfs4_renewdata
*data
= calldata
;
4325 struct nfs_client
*clp
= data
->client
;
4326 unsigned long timestamp
= data
->timestamp
;
4328 trace_nfs4_renew_async(clp
, task
->tk_status
);
4329 switch (task
->tk_status
) {
4332 case -NFS4ERR_LEASE_MOVED
:
4333 nfs4_schedule_lease_moved_recovery(clp
);
4336 /* Unless we're shutting down, schedule state recovery! */
4337 if (test_bit(NFS_CS_RENEWD
, &clp
->cl_res_state
) == 0)
4339 if (task
->tk_status
!= NFS4ERR_CB_PATH_DOWN
) {
4340 nfs4_schedule_lease_recovery(clp
);
4343 nfs4_schedule_path_down_recovery(clp
);
4345 do_renew_lease(clp
, timestamp
);
4348 static const struct rpc_call_ops nfs4_renew_ops
= {
4349 .rpc_call_done
= nfs4_renew_done
,
4350 .rpc_release
= nfs4_renew_release
,
4353 static int nfs4_proc_async_renew(struct nfs_client
*clp
, struct rpc_cred
*cred
, unsigned renew_flags
)
4355 struct rpc_message msg
= {
4356 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RENEW
],
4360 struct nfs4_renewdata
*data
;
4362 if (renew_flags
== 0)
4364 if (!atomic_inc_not_zero(&clp
->cl_count
))
4366 data
= kmalloc(sizeof(*data
), GFP_NOFS
);
4370 data
->timestamp
= jiffies
;
4371 return rpc_call_async(clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
,
4372 &nfs4_renew_ops
, data
);
4375 static int nfs4_proc_renew(struct nfs_client
*clp
, struct rpc_cred
*cred
)
4377 struct rpc_message msg
= {
4378 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RENEW
],
4382 unsigned long now
= jiffies
;
4385 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
4388 do_renew_lease(clp
, now
);
4392 static inline int nfs4_server_supports_acls(struct nfs_server
*server
)
4394 return server
->caps
& NFS_CAP_ACLS
;
4397 /* Assuming that XATTR_SIZE_MAX is a multiple of PAGE_SIZE, and that
4398 * it's OK to put sizeof(void) * (XATTR_SIZE_MAX/PAGE_SIZE) bytes on
4401 #define NFS4ACL_MAXPAGES DIV_ROUND_UP(XATTR_SIZE_MAX, PAGE_SIZE)
4403 static int buf_to_pages_noslab(const void *buf
, size_t buflen
,
4404 struct page
**pages
, unsigned int *pgbase
)
4406 struct page
*newpage
, **spages
;
4412 len
= min_t(size_t, PAGE_SIZE
, buflen
);
4413 newpage
= alloc_page(GFP_KERNEL
);
4415 if (newpage
== NULL
)
4417 memcpy(page_address(newpage
), buf
, len
);
4422 } while (buflen
!= 0);
4428 __free_page(spages
[rc
-1]);
4432 struct nfs4_cached_acl
{
4438 static void nfs4_set_cached_acl(struct inode
*inode
, struct nfs4_cached_acl
*acl
)
4440 struct nfs_inode
*nfsi
= NFS_I(inode
);
4442 spin_lock(&inode
->i_lock
);
4443 kfree(nfsi
->nfs4_acl
);
4444 nfsi
->nfs4_acl
= acl
;
4445 spin_unlock(&inode
->i_lock
);
4448 static void nfs4_zap_acl_attr(struct inode
*inode
)
4450 nfs4_set_cached_acl(inode
, NULL
);
4453 static inline ssize_t
nfs4_read_cached_acl(struct inode
*inode
, char *buf
, size_t buflen
)
4455 struct nfs_inode
*nfsi
= NFS_I(inode
);
4456 struct nfs4_cached_acl
*acl
;
4459 spin_lock(&inode
->i_lock
);
4460 acl
= nfsi
->nfs4_acl
;
4463 if (buf
== NULL
) /* user is just asking for length */
4465 if (acl
->cached
== 0)
4467 ret
= -ERANGE
; /* see getxattr(2) man page */
4468 if (acl
->len
> buflen
)
4470 memcpy(buf
, acl
->data
, acl
->len
);
4474 spin_unlock(&inode
->i_lock
);
4478 static void nfs4_write_cached_acl(struct inode
*inode
, struct page
**pages
, size_t pgbase
, size_t acl_len
)
4480 struct nfs4_cached_acl
*acl
;
4481 size_t buflen
= sizeof(*acl
) + acl_len
;
4483 if (buflen
<= PAGE_SIZE
) {
4484 acl
= kmalloc(buflen
, GFP_KERNEL
);
4488 _copy_from_pages(acl
->data
, pages
, pgbase
, acl_len
);
4490 acl
= kmalloc(sizeof(*acl
), GFP_KERNEL
);
4497 nfs4_set_cached_acl(inode
, acl
);
4501 * The getxattr API returns the required buffer length when called with a
4502 * NULL buf. The NFSv4 acl tool then calls getxattr again after allocating
4503 * the required buf. On a NULL buf, we send a page of data to the server
4504 * guessing that the ACL request can be serviced by a page. If so, we cache
4505 * up to the page of ACL data, and the 2nd call to getxattr is serviced by
4506 * the cache. If not so, we throw away the page, and cache the required
4507 * length. The next getxattr call will then produce another round trip to
4508 * the server, this time with the input buf of the required size.
4510 static ssize_t
__nfs4_get_acl_uncached(struct inode
*inode
, void *buf
, size_t buflen
)
4512 struct page
*pages
[NFS4ACL_MAXPAGES
] = {NULL
, };
4513 struct nfs_getaclargs args
= {
4514 .fh
= NFS_FH(inode
),
4518 struct nfs_getaclres res
= {
4521 struct rpc_message msg
= {
4522 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GETACL
],
4526 unsigned int npages
= DIV_ROUND_UP(buflen
, PAGE_SIZE
);
4527 int ret
= -ENOMEM
, i
;
4529 /* As long as we're doing a round trip to the server anyway,
4530 * let's be prepared for a page of acl data. */
4533 if (npages
> ARRAY_SIZE(pages
))
4536 for (i
= 0; i
< npages
; i
++) {
4537 pages
[i
] = alloc_page(GFP_KERNEL
);
4542 /* for decoding across pages */
4543 res
.acl_scratch
= alloc_page(GFP_KERNEL
);
4544 if (!res
.acl_scratch
)
4547 args
.acl_len
= npages
* PAGE_SIZE
;
4548 args
.acl_pgbase
= 0;
4550 dprintk("%s buf %p buflen %zu npages %d args.acl_len %zu\n",
4551 __func__
, buf
, buflen
, npages
, args
.acl_len
);
4552 ret
= nfs4_call_sync(NFS_SERVER(inode
)->client
, NFS_SERVER(inode
),
4553 &msg
, &args
.seq_args
, &res
.seq_res
, 0);
4557 /* Handle the case where the passed-in buffer is too short */
4558 if (res
.acl_flags
& NFS4_ACL_TRUNC
) {
4559 /* Did the user only issue a request for the acl length? */
4565 nfs4_write_cached_acl(inode
, pages
, res
.acl_data_offset
, res
.acl_len
);
4567 if (res
.acl_len
> buflen
) {
4571 _copy_from_pages(buf
, pages
, res
.acl_data_offset
, res
.acl_len
);
4576 for (i
= 0; i
< npages
; i
++)
4578 __free_page(pages
[i
]);
4579 if (res
.acl_scratch
)
4580 __free_page(res
.acl_scratch
);
4584 static ssize_t
nfs4_get_acl_uncached(struct inode
*inode
, void *buf
, size_t buflen
)
4586 struct nfs4_exception exception
= { };
4589 ret
= __nfs4_get_acl_uncached(inode
, buf
, buflen
);
4590 trace_nfs4_get_acl(inode
, ret
);
4593 ret
= nfs4_handle_exception(NFS_SERVER(inode
), ret
, &exception
);
4594 } while (exception
.retry
);
4598 static ssize_t
nfs4_proc_get_acl(struct inode
*inode
, void *buf
, size_t buflen
)
4600 struct nfs_server
*server
= NFS_SERVER(inode
);
4603 if (!nfs4_server_supports_acls(server
))
4605 ret
= nfs_revalidate_inode(server
, inode
);
4608 if (NFS_I(inode
)->cache_validity
& NFS_INO_INVALID_ACL
)
4609 nfs_zap_acl_cache(inode
);
4610 ret
= nfs4_read_cached_acl(inode
, buf
, buflen
);
4612 /* -ENOENT is returned if there is no ACL or if there is an ACL
4613 * but no cached acl data, just the acl length */
4615 return nfs4_get_acl_uncached(inode
, buf
, buflen
);
4618 static int __nfs4_proc_set_acl(struct inode
*inode
, const void *buf
, size_t buflen
)
4620 struct nfs_server
*server
= NFS_SERVER(inode
);
4621 struct page
*pages
[NFS4ACL_MAXPAGES
];
4622 struct nfs_setaclargs arg
= {
4623 .fh
= NFS_FH(inode
),
4627 struct nfs_setaclres res
;
4628 struct rpc_message msg
= {
4629 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETACL
],
4633 unsigned int npages
= DIV_ROUND_UP(buflen
, PAGE_SIZE
);
4636 if (!nfs4_server_supports_acls(server
))
4638 if (npages
> ARRAY_SIZE(pages
))
4640 i
= buf_to_pages_noslab(buf
, buflen
, arg
.acl_pages
, &arg
.acl_pgbase
);
4643 nfs4_inode_return_delegation(inode
);
4644 ret
= nfs4_call_sync(server
->client
, server
, &msg
, &arg
.seq_args
, &res
.seq_res
, 1);
4647 * Free each page after tx, so the only ref left is
4648 * held by the network stack
4651 put_page(pages
[i
-1]);
4654 * Acl update can result in inode attribute update.
4655 * so mark the attribute cache invalid.
4657 spin_lock(&inode
->i_lock
);
4658 NFS_I(inode
)->cache_validity
|= NFS_INO_INVALID_ATTR
;
4659 spin_unlock(&inode
->i_lock
);
4660 nfs_access_zap_cache(inode
);
4661 nfs_zap_acl_cache(inode
);
4665 static int nfs4_proc_set_acl(struct inode
*inode
, const void *buf
, size_t buflen
)
4667 struct nfs4_exception exception
= { };
4670 err
= __nfs4_proc_set_acl(inode
, buf
, buflen
);
4671 trace_nfs4_set_acl(inode
, err
);
4672 err
= nfs4_handle_exception(NFS_SERVER(inode
), err
,
4674 } while (exception
.retry
);
4678 #ifdef CONFIG_NFS_V4_SECURITY_LABEL
4679 static int _nfs4_get_security_label(struct inode
*inode
, void *buf
,
4682 struct nfs_server
*server
= NFS_SERVER(inode
);
4683 struct nfs_fattr fattr
;
4684 struct nfs4_label label
= {0, 0, buflen
, buf
};
4686 u32 bitmask
[3] = { 0, 0, FATTR4_WORD2_SECURITY_LABEL
};
4687 struct nfs4_getattr_arg arg
= {
4688 .fh
= NFS_FH(inode
),
4691 struct nfs4_getattr_res res
= {
4696 struct rpc_message msg
= {
4697 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GETATTR
],
4703 nfs_fattr_init(&fattr
);
4705 ret
= nfs4_call_sync(server
->client
, server
, &msg
, &arg
.seq_args
, &res
.seq_res
, 0);
4708 if (!(fattr
.valid
& NFS_ATTR_FATTR_V4_SECURITY_LABEL
))
4710 if (buflen
< label
.len
)
4715 static int nfs4_get_security_label(struct inode
*inode
, void *buf
,
4718 struct nfs4_exception exception
= { };
4721 if (!nfs_server_capable(inode
, NFS_CAP_SECURITY_LABEL
))
4725 err
= _nfs4_get_security_label(inode
, buf
, buflen
);
4726 trace_nfs4_get_security_label(inode
, err
);
4727 err
= nfs4_handle_exception(NFS_SERVER(inode
), err
,
4729 } while (exception
.retry
);
4733 static int _nfs4_do_set_security_label(struct inode
*inode
,
4734 struct nfs4_label
*ilabel
,
4735 struct nfs_fattr
*fattr
,
4736 struct nfs4_label
*olabel
)
4739 struct iattr sattr
= {0};
4740 struct nfs_server
*server
= NFS_SERVER(inode
);
4741 const u32 bitmask
[3] = { 0, 0, FATTR4_WORD2_SECURITY_LABEL
};
4742 struct nfs_setattrargs arg
= {
4743 .fh
= NFS_FH(inode
),
4749 struct nfs_setattrres res
= {
4754 struct rpc_message msg
= {
4755 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETATTR
],
4761 nfs4_stateid_copy(&arg
.stateid
, &zero_stateid
);
4763 status
= nfs4_call_sync(server
->client
, server
, &msg
, &arg
.seq_args
, &res
.seq_res
, 1);
4765 dprintk("%s failed: %d\n", __func__
, status
);
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
)
4775 struct nfs4_exception exception
= { };
4779 err
= _nfs4_do_set_security_label(inode
, ilabel
,
4781 trace_nfs4_set_security_label(inode
, err
);
4782 err
= nfs4_handle_exception(NFS_SERVER(inode
), err
,
4784 } while (exception
.retry
);
4789 nfs4_set_security_label(struct dentry
*dentry
, const void *buf
, size_t buflen
)
4791 struct nfs4_label ilabel
, *olabel
= NULL
;
4792 struct nfs_fattr fattr
;
4793 struct rpc_cred
*cred
;
4794 struct inode
*inode
= dentry
->d_inode
;
4797 if (!nfs_server_capable(inode
, NFS_CAP_SECURITY_LABEL
))
4800 nfs_fattr_init(&fattr
);
4804 ilabel
.label
= (char *)buf
;
4805 ilabel
.len
= buflen
;
4807 cred
= rpc_lookup_cred();
4809 return PTR_ERR(cred
);
4811 olabel
= nfs4_label_alloc(NFS_SERVER(inode
), GFP_KERNEL
);
4812 if (IS_ERR(olabel
)) {
4813 status
= -PTR_ERR(olabel
);
4817 status
= nfs4_do_set_security_label(inode
, &ilabel
, &fattr
, olabel
);
4819 nfs_setsecurity(inode
, &fattr
, olabel
);
4821 nfs4_label_free(olabel
);
4826 #endif /* CONFIG_NFS_V4_SECURITY_LABEL */
4830 nfs4_async_handle_error(struct rpc_task
*task
, const struct nfs_server
*server
,
4831 struct nfs4_state
*state
, long *timeout
)
4833 struct nfs_client
*clp
= server
->nfs_client
;
4835 if (task
->tk_status
>= 0)
4837 switch(task
->tk_status
) {
4838 case -NFS4ERR_DELEG_REVOKED
:
4839 case -NFS4ERR_ADMIN_REVOKED
:
4840 case -NFS4ERR_BAD_STATEID
:
4841 case -NFS4ERR_OPENMODE
:
4844 if (nfs4_schedule_stateid_recovery(server
, state
) < 0)
4845 goto recovery_failed
;
4846 goto wait_on_recovery
;
4847 case -NFS4ERR_EXPIRED
:
4848 if (state
!= NULL
) {
4849 if (nfs4_schedule_stateid_recovery(server
, state
) < 0)
4850 goto recovery_failed
;
4852 case -NFS4ERR_STALE_STATEID
:
4853 case -NFS4ERR_STALE_CLIENTID
:
4854 nfs4_schedule_lease_recovery(clp
);
4855 goto wait_on_recovery
;
4856 case -NFS4ERR_MOVED
:
4857 if (nfs4_schedule_migration_recovery(server
) < 0)
4858 goto recovery_failed
;
4859 goto wait_on_recovery
;
4860 case -NFS4ERR_LEASE_MOVED
:
4861 nfs4_schedule_lease_moved_recovery(clp
);
4862 goto wait_on_recovery
;
4863 #if defined(CONFIG_NFS_V4_1)
4864 case -NFS4ERR_BADSESSION
:
4865 case -NFS4ERR_BADSLOT
:
4866 case -NFS4ERR_BAD_HIGH_SLOT
:
4867 case -NFS4ERR_DEADSESSION
:
4868 case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION
:
4869 case -NFS4ERR_SEQ_FALSE_RETRY
:
4870 case -NFS4ERR_SEQ_MISORDERED
:
4871 dprintk("%s ERROR %d, Reset session\n", __func__
,
4873 nfs4_schedule_session_recovery(clp
->cl_session
, task
->tk_status
);
4874 goto wait_on_recovery
;
4875 #endif /* CONFIG_NFS_V4_1 */
4876 case -NFS4ERR_DELAY
:
4877 nfs_inc_server_stats(server
, NFSIOS_DELAY
);
4878 rpc_delay(task
, nfs4_update_delay(timeout
));
4880 case -NFS4ERR_GRACE
:
4881 rpc_delay(task
, NFS4_POLL_RETRY_MAX
);
4882 case -NFS4ERR_RETRY_UNCACHED_REP
:
4883 case -NFS4ERR_OLD_STATEID
:
4886 task
->tk_status
= nfs4_map_errors(task
->tk_status
);
4889 task
->tk_status
= -EIO
;
4892 rpc_sleep_on(&clp
->cl_rpcwaitq
, task
, NULL
);
4893 if (test_bit(NFS4CLNT_MANAGER_RUNNING
, &clp
->cl_state
) == 0)
4894 rpc_wake_up_queued_task(&clp
->cl_rpcwaitq
, task
);
4895 if (test_bit(NFS_MIG_FAILED
, &server
->mig_status
))
4896 goto recovery_failed
;
4898 task
->tk_status
= 0;
4902 static void nfs4_init_boot_verifier(const struct nfs_client
*clp
,
4903 nfs4_verifier
*bootverf
)
4907 if (test_bit(NFS4CLNT_PURGE_STATE
, &clp
->cl_state
)) {
4908 /* An impossible timestamp guarantees this value
4909 * will never match a generated boot time. */
4911 verf
[1] = cpu_to_be32(NSEC_PER_SEC
+ 1);
4913 struct nfs_net
*nn
= net_generic(clp
->cl_net
, nfs_net_id
);
4914 verf
[0] = cpu_to_be32(nn
->boot_time
.tv_sec
);
4915 verf
[1] = cpu_to_be32(nn
->boot_time
.tv_nsec
);
4917 memcpy(bootverf
->data
, verf
, sizeof(bootverf
->data
));
4921 nfs4_init_nonuniform_client_string(struct nfs_client
*clp
,
4922 char *buf
, size_t len
)
4924 unsigned int result
;
4926 if (clp
->cl_owner_id
!= NULL
)
4927 return strlcpy(buf
, clp
->cl_owner_id
, len
);
4930 result
= scnprintf(buf
, len
, "Linux NFSv4.0 %s/%s %s",
4932 rpc_peeraddr2str(clp
->cl_rpcclient
,
4934 rpc_peeraddr2str(clp
->cl_rpcclient
,
4935 RPC_DISPLAY_PROTO
));
4937 clp
->cl_owner_id
= kstrdup(buf
, GFP_KERNEL
);
4942 nfs4_init_uniform_client_string(struct nfs_client
*clp
,
4943 char *buf
, size_t len
)
4945 const char *nodename
= clp
->cl_rpcclient
->cl_nodename
;
4946 unsigned int result
;
4948 if (clp
->cl_owner_id
!= NULL
)
4949 return strlcpy(buf
, clp
->cl_owner_id
, len
);
4951 if (nfs4_client_id_uniquifier
[0] != '\0')
4952 result
= scnprintf(buf
, len
, "Linux NFSv%u.%u %s/%s",
4953 clp
->rpc_ops
->version
,
4954 clp
->cl_minorversion
,
4955 nfs4_client_id_uniquifier
,
4958 result
= scnprintf(buf
, len
, "Linux NFSv%u.%u %s",
4959 clp
->rpc_ops
->version
, clp
->cl_minorversion
,
4961 clp
->cl_owner_id
= kstrdup(buf
, GFP_KERNEL
);
4966 * nfs4_callback_up_net() starts only "tcp" and "tcp6" callback
4967 * services. Advertise one based on the address family of the
4971 nfs4_init_callback_netid(const struct nfs_client
*clp
, char *buf
, size_t len
)
4973 if (strchr(clp
->cl_ipaddr
, ':') != NULL
)
4974 return scnprintf(buf
, len
, "tcp6");
4976 return scnprintf(buf
, len
, "tcp");
4979 static void nfs4_setclientid_done(struct rpc_task
*task
, void *calldata
)
4981 struct nfs4_setclientid
*sc
= calldata
;
4983 if (task
->tk_status
== 0)
4984 sc
->sc_cred
= get_rpccred(task
->tk_rqstp
->rq_cred
);
4987 static const struct rpc_call_ops nfs4_setclientid_ops
= {
4988 .rpc_call_done
= nfs4_setclientid_done
,
4992 * nfs4_proc_setclientid - Negotiate client ID
4993 * @clp: state data structure
4994 * @program: RPC program for NFSv4 callback service
4995 * @port: IP port number for NFS4 callback service
4996 * @cred: RPC credential to use for this call
4997 * @res: where to place the result
4999 * Returns zero, a negative errno, or a negative NFS4ERR status code.
5001 int nfs4_proc_setclientid(struct nfs_client
*clp
, u32 program
,
5002 unsigned short port
, struct rpc_cred
*cred
,
5003 struct nfs4_setclientid_res
*res
)
5005 nfs4_verifier sc_verifier
;
5006 struct nfs4_setclientid setclientid
= {
5007 .sc_verifier
= &sc_verifier
,
5009 .sc_cb_ident
= clp
->cl_cb_ident
,
5011 struct rpc_message msg
= {
5012 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETCLIENTID
],
5013 .rpc_argp
= &setclientid
,
5017 struct rpc_task
*task
;
5018 struct rpc_task_setup task_setup_data
= {
5019 .rpc_client
= clp
->cl_rpcclient
,
5020 .rpc_message
= &msg
,
5021 .callback_ops
= &nfs4_setclientid_ops
,
5022 .callback_data
= &setclientid
,
5023 .flags
= RPC_TASK_TIMEOUT
,
5027 /* nfs_client_id4 */
5028 nfs4_init_boot_verifier(clp
, &sc_verifier
);
5029 if (test_bit(NFS_CS_MIGRATION
, &clp
->cl_flags
))
5030 setclientid
.sc_name_len
=
5031 nfs4_init_uniform_client_string(clp
,
5032 setclientid
.sc_name
,
5033 sizeof(setclientid
.sc_name
));
5035 setclientid
.sc_name_len
=
5036 nfs4_init_nonuniform_client_string(clp
,
5037 setclientid
.sc_name
,
5038 sizeof(setclientid
.sc_name
));
5040 setclientid
.sc_netid_len
=
5041 nfs4_init_callback_netid(clp
,
5042 setclientid
.sc_netid
,
5043 sizeof(setclientid
.sc_netid
));
5044 setclientid
.sc_uaddr_len
= scnprintf(setclientid
.sc_uaddr
,
5045 sizeof(setclientid
.sc_uaddr
), "%s.%u.%u",
5046 clp
->cl_ipaddr
, port
>> 8, port
& 255);
5048 dprintk("NFS call setclientid auth=%s, '%.*s'\n",
5049 clp
->cl_rpcclient
->cl_auth
->au_ops
->au_name
,
5050 setclientid
.sc_name_len
, setclientid
.sc_name
);
5051 task
= rpc_run_task(&task_setup_data
);
5053 status
= PTR_ERR(task
);
5056 status
= task
->tk_status
;
5057 if (setclientid
.sc_cred
) {
5058 clp
->cl_acceptor
= rpcauth_stringify_acceptor(setclientid
.sc_cred
);
5059 put_rpccred(setclientid
.sc_cred
);
5063 trace_nfs4_setclientid(clp
, status
);
5064 dprintk("NFS reply setclientid: %d\n", status
);
5069 * nfs4_proc_setclientid_confirm - Confirm client ID
5070 * @clp: state data structure
5071 * @res: result of a previous SETCLIENTID
5072 * @cred: RPC credential to use for this call
5074 * Returns zero, a negative errno, or a negative NFS4ERR status code.
5076 int nfs4_proc_setclientid_confirm(struct nfs_client
*clp
,
5077 struct nfs4_setclientid_res
*arg
,
5078 struct rpc_cred
*cred
)
5080 struct rpc_message msg
= {
5081 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETCLIENTID_CONFIRM
],
5087 dprintk("NFS call setclientid_confirm auth=%s, (client ID %llx)\n",
5088 clp
->cl_rpcclient
->cl_auth
->au_ops
->au_name
,
5090 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
5091 trace_nfs4_setclientid_confirm(clp
, status
);
5092 dprintk("NFS reply setclientid_confirm: %d\n", status
);
5096 struct nfs4_delegreturndata
{
5097 struct nfs4_delegreturnargs args
;
5098 struct nfs4_delegreturnres res
;
5100 nfs4_stateid stateid
;
5101 unsigned long timestamp
;
5102 struct nfs_fattr fattr
;
5104 struct inode
*inode
;
5109 static void nfs4_delegreturn_done(struct rpc_task
*task
, void *calldata
)
5111 struct nfs4_delegreturndata
*data
= calldata
;
5113 if (!nfs4_sequence_done(task
, &data
->res
.seq_res
))
5116 trace_nfs4_delegreturn_exit(&data
->args
, &data
->res
, task
->tk_status
);
5117 switch (task
->tk_status
) {
5119 renew_lease(data
->res
.server
, data
->timestamp
);
5120 case -NFS4ERR_ADMIN_REVOKED
:
5121 case -NFS4ERR_DELEG_REVOKED
:
5122 case -NFS4ERR_BAD_STATEID
:
5123 case -NFS4ERR_OLD_STATEID
:
5124 case -NFS4ERR_STALE_STATEID
:
5125 case -NFS4ERR_EXPIRED
:
5126 task
->tk_status
= 0;
5128 pnfs_roc_set_barrier(data
->inode
, data
->roc_barrier
);
5131 if (nfs4_async_handle_error(task
, data
->res
.server
,
5132 NULL
, NULL
) == -EAGAIN
) {
5133 rpc_restart_call_prepare(task
);
5137 data
->rpc_status
= task
->tk_status
;
5140 static void nfs4_delegreturn_release(void *calldata
)
5142 struct nfs4_delegreturndata
*data
= calldata
;
5145 pnfs_roc_release(data
->inode
);
5149 static void nfs4_delegreturn_prepare(struct rpc_task
*task
, void *data
)
5151 struct nfs4_delegreturndata
*d_data
;
5153 d_data
= (struct nfs4_delegreturndata
*)data
;
5156 pnfs_roc_drain(d_data
->inode
, &d_data
->roc_barrier
, task
))
5159 nfs4_setup_sequence(d_data
->res
.server
,
5160 &d_data
->args
.seq_args
,
5161 &d_data
->res
.seq_res
,
5165 static const struct rpc_call_ops nfs4_delegreturn_ops
= {
5166 .rpc_call_prepare
= nfs4_delegreturn_prepare
,
5167 .rpc_call_done
= nfs4_delegreturn_done
,
5168 .rpc_release
= nfs4_delegreturn_release
,
5171 static int _nfs4_proc_delegreturn(struct inode
*inode
, struct rpc_cred
*cred
, const nfs4_stateid
*stateid
, int issync
)
5173 struct nfs4_delegreturndata
*data
;
5174 struct nfs_server
*server
= NFS_SERVER(inode
);
5175 struct rpc_task
*task
;
5176 struct rpc_message msg
= {
5177 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_DELEGRETURN
],
5180 struct rpc_task_setup task_setup_data
= {
5181 .rpc_client
= server
->client
,
5182 .rpc_message
= &msg
,
5183 .callback_ops
= &nfs4_delegreturn_ops
,
5184 .flags
= RPC_TASK_ASYNC
,
5188 data
= kzalloc(sizeof(*data
), GFP_NOFS
);
5191 nfs4_init_sequence(&data
->args
.seq_args
, &data
->res
.seq_res
, 1);
5192 data
->args
.fhandle
= &data
->fh
;
5193 data
->args
.stateid
= &data
->stateid
;
5194 data
->args
.bitmask
= server
->cache_consistency_bitmask
;
5195 nfs_copy_fh(&data
->fh
, NFS_FH(inode
));
5196 nfs4_stateid_copy(&data
->stateid
, stateid
);
5197 data
->res
.fattr
= &data
->fattr
;
5198 data
->res
.server
= server
;
5199 nfs_fattr_init(data
->res
.fattr
);
5200 data
->timestamp
= jiffies
;
5201 data
->rpc_status
= 0;
5202 data
->inode
= inode
;
5203 data
->roc
= list_empty(&NFS_I(inode
)->open_files
) ?
5204 pnfs_roc(inode
) : false;
5206 task_setup_data
.callback_data
= data
;
5207 msg
.rpc_argp
= &data
->args
;
5208 msg
.rpc_resp
= &data
->res
;
5209 task
= rpc_run_task(&task_setup_data
);
5211 return PTR_ERR(task
);
5214 status
= nfs4_wait_for_completion_rpc_task(task
);
5217 status
= data
->rpc_status
;
5219 nfs_post_op_update_inode_force_wcc(inode
, &data
->fattr
);
5221 nfs_refresh_inode(inode
, &data
->fattr
);
5227 int nfs4_proc_delegreturn(struct inode
*inode
, struct rpc_cred
*cred
, const nfs4_stateid
*stateid
, int issync
)
5229 struct nfs_server
*server
= NFS_SERVER(inode
);
5230 struct nfs4_exception exception
= { };
5233 err
= _nfs4_proc_delegreturn(inode
, cred
, stateid
, issync
);
5234 trace_nfs4_delegreturn(inode
, err
);
5236 case -NFS4ERR_STALE_STATEID
:
5237 case -NFS4ERR_EXPIRED
:
5241 err
= nfs4_handle_exception(server
, err
, &exception
);
5242 } while (exception
.retry
);
5246 #define NFS4_LOCK_MINTIMEOUT (1 * HZ)
5247 #define NFS4_LOCK_MAXTIMEOUT (30 * HZ)
5250 * sleep, with exponential backoff, and retry the LOCK operation.
5252 static unsigned long
5253 nfs4_set_lock_task_retry(unsigned long timeout
)
5255 freezable_schedule_timeout_killable_unsafe(timeout
);
5257 if (timeout
> NFS4_LOCK_MAXTIMEOUT
)
5258 return NFS4_LOCK_MAXTIMEOUT
;
5262 static int _nfs4_proc_getlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
5264 struct inode
*inode
= state
->inode
;
5265 struct nfs_server
*server
= NFS_SERVER(inode
);
5266 struct nfs_client
*clp
= server
->nfs_client
;
5267 struct nfs_lockt_args arg
= {
5268 .fh
= NFS_FH(inode
),
5271 struct nfs_lockt_res res
= {
5274 struct rpc_message msg
= {
5275 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOCKT
],
5278 .rpc_cred
= state
->owner
->so_cred
,
5280 struct nfs4_lock_state
*lsp
;
5283 arg
.lock_owner
.clientid
= clp
->cl_clientid
;
5284 status
= nfs4_set_lock_state(state
, request
);
5287 lsp
= request
->fl_u
.nfs4_fl
.owner
;
5288 arg
.lock_owner
.id
= lsp
->ls_seqid
.owner_id
;
5289 arg
.lock_owner
.s_dev
= server
->s_dev
;
5290 status
= nfs4_call_sync(server
->client
, server
, &msg
, &arg
.seq_args
, &res
.seq_res
, 1);
5293 request
->fl_type
= F_UNLCK
;
5295 case -NFS4ERR_DENIED
:
5298 request
->fl_ops
->fl_release_private(request
);
5299 request
->fl_ops
= NULL
;
5304 static int nfs4_proc_getlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
5306 struct nfs4_exception exception
= { };
5310 err
= _nfs4_proc_getlk(state
, cmd
, request
);
5311 trace_nfs4_get_lock(request
, state
, cmd
, err
);
5312 err
= nfs4_handle_exception(NFS_SERVER(state
->inode
), err
,
5314 } while (exception
.retry
);
5318 static int do_vfs_lock(struct file
*file
, struct file_lock
*fl
)
5321 switch (fl
->fl_flags
& (FL_POSIX
|FL_FLOCK
)) {
5323 res
= posix_lock_file_wait(file
, fl
);
5326 res
= flock_lock_file_wait(file
, fl
);
5334 struct nfs4_unlockdata
{
5335 struct nfs_locku_args arg
;
5336 struct nfs_locku_res res
;
5337 struct nfs4_lock_state
*lsp
;
5338 struct nfs_open_context
*ctx
;
5339 struct file_lock fl
;
5340 const struct nfs_server
*server
;
5341 unsigned long timestamp
;
5344 static struct nfs4_unlockdata
*nfs4_alloc_unlockdata(struct file_lock
*fl
,
5345 struct nfs_open_context
*ctx
,
5346 struct nfs4_lock_state
*lsp
,
5347 struct nfs_seqid
*seqid
)
5349 struct nfs4_unlockdata
*p
;
5350 struct inode
*inode
= lsp
->ls_state
->inode
;
5352 p
= kzalloc(sizeof(*p
), GFP_NOFS
);
5355 p
->arg
.fh
= NFS_FH(inode
);
5357 p
->arg
.seqid
= seqid
;
5358 p
->res
.seqid
= seqid
;
5359 p
->arg
.stateid
= &lsp
->ls_stateid
;
5361 atomic_inc(&lsp
->ls_count
);
5362 /* Ensure we don't close file until we're done freeing locks! */
5363 p
->ctx
= get_nfs_open_context(ctx
);
5364 memcpy(&p
->fl
, fl
, sizeof(p
->fl
));
5365 p
->server
= NFS_SERVER(inode
);
5369 static void nfs4_locku_release_calldata(void *data
)
5371 struct nfs4_unlockdata
*calldata
= data
;
5372 nfs_free_seqid(calldata
->arg
.seqid
);
5373 nfs4_put_lock_state(calldata
->lsp
);
5374 put_nfs_open_context(calldata
->ctx
);
5378 static void nfs4_locku_done(struct rpc_task
*task
, void *data
)
5380 struct nfs4_unlockdata
*calldata
= data
;
5382 if (!nfs4_sequence_done(task
, &calldata
->res
.seq_res
))
5384 switch (task
->tk_status
) {
5386 nfs4_stateid_copy(&calldata
->lsp
->ls_stateid
,
5387 &calldata
->res
.stateid
);
5388 renew_lease(calldata
->server
, calldata
->timestamp
);
5390 case -NFS4ERR_BAD_STATEID
:
5391 case -NFS4ERR_OLD_STATEID
:
5392 case -NFS4ERR_STALE_STATEID
:
5393 case -NFS4ERR_EXPIRED
:
5396 if (nfs4_async_handle_error(task
, calldata
->server
,
5397 NULL
, NULL
) == -EAGAIN
)
5398 rpc_restart_call_prepare(task
);
5400 nfs_release_seqid(calldata
->arg
.seqid
);
5403 static void nfs4_locku_prepare(struct rpc_task
*task
, void *data
)
5405 struct nfs4_unlockdata
*calldata
= data
;
5407 if (nfs_wait_on_sequence(calldata
->arg
.seqid
, task
) != 0)
5409 if (test_bit(NFS_LOCK_INITIALIZED
, &calldata
->lsp
->ls_flags
) == 0) {
5410 /* Note: exit _without_ running nfs4_locku_done */
5413 calldata
->timestamp
= jiffies
;
5414 if (nfs4_setup_sequence(calldata
->server
,
5415 &calldata
->arg
.seq_args
,
5416 &calldata
->res
.seq_res
,
5418 nfs_release_seqid(calldata
->arg
.seqid
);
5421 task
->tk_action
= NULL
;
5423 nfs4_sequence_done(task
, &calldata
->res
.seq_res
);
5426 static const struct rpc_call_ops nfs4_locku_ops
= {
5427 .rpc_call_prepare
= nfs4_locku_prepare
,
5428 .rpc_call_done
= nfs4_locku_done
,
5429 .rpc_release
= nfs4_locku_release_calldata
,
5432 static struct rpc_task
*nfs4_do_unlck(struct file_lock
*fl
,
5433 struct nfs_open_context
*ctx
,
5434 struct nfs4_lock_state
*lsp
,
5435 struct nfs_seqid
*seqid
)
5437 struct nfs4_unlockdata
*data
;
5438 struct rpc_message msg
= {
5439 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOCKU
],
5440 .rpc_cred
= ctx
->cred
,
5442 struct rpc_task_setup task_setup_data
= {
5443 .rpc_client
= NFS_CLIENT(lsp
->ls_state
->inode
),
5444 .rpc_message
= &msg
,
5445 .callback_ops
= &nfs4_locku_ops
,
5446 .workqueue
= nfsiod_workqueue
,
5447 .flags
= RPC_TASK_ASYNC
,
5450 nfs4_state_protect(NFS_SERVER(lsp
->ls_state
->inode
)->nfs_client
,
5451 NFS_SP4_MACH_CRED_CLEANUP
, &task_setup_data
.rpc_client
, &msg
);
5453 /* Ensure this is an unlock - when canceling a lock, the
5454 * canceled lock is passed in, and it won't be an unlock.
5456 fl
->fl_type
= F_UNLCK
;
5458 data
= nfs4_alloc_unlockdata(fl
, ctx
, lsp
, seqid
);
5460 nfs_free_seqid(seqid
);
5461 return ERR_PTR(-ENOMEM
);
5464 nfs4_init_sequence(&data
->arg
.seq_args
, &data
->res
.seq_res
, 1);
5465 msg
.rpc_argp
= &data
->arg
;
5466 msg
.rpc_resp
= &data
->res
;
5467 task_setup_data
.callback_data
= data
;
5468 return rpc_run_task(&task_setup_data
);
5471 static int nfs4_proc_unlck(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
5473 struct inode
*inode
= state
->inode
;
5474 struct nfs4_state_owner
*sp
= state
->owner
;
5475 struct nfs_inode
*nfsi
= NFS_I(inode
);
5476 struct nfs_seqid
*seqid
;
5477 struct nfs4_lock_state
*lsp
;
5478 struct rpc_task
*task
;
5480 unsigned char fl_flags
= request
->fl_flags
;
5482 status
= nfs4_set_lock_state(state
, request
);
5483 /* Unlock _before_ we do the RPC call */
5484 request
->fl_flags
|= FL_EXISTS
;
5485 /* Exclude nfs_delegation_claim_locks() */
5486 mutex_lock(&sp
->so_delegreturn_mutex
);
5487 /* Exclude nfs4_reclaim_open_stateid() - note nesting! */
5488 down_read(&nfsi
->rwsem
);
5489 if (do_vfs_lock(request
->fl_file
, request
) == -ENOENT
) {
5490 up_read(&nfsi
->rwsem
);
5491 mutex_unlock(&sp
->so_delegreturn_mutex
);
5494 up_read(&nfsi
->rwsem
);
5495 mutex_unlock(&sp
->so_delegreturn_mutex
);
5498 /* Is this a delegated lock? */
5499 lsp
= request
->fl_u
.nfs4_fl
.owner
;
5500 if (test_bit(NFS_LOCK_INITIALIZED
, &lsp
->ls_flags
) == 0)
5502 seqid
= nfs_alloc_seqid(&lsp
->ls_seqid
, GFP_KERNEL
);
5506 task
= nfs4_do_unlck(request
, nfs_file_open_context(request
->fl_file
), lsp
, seqid
);
5507 status
= PTR_ERR(task
);
5510 status
= nfs4_wait_for_completion_rpc_task(task
);
5513 request
->fl_flags
= fl_flags
;
5514 trace_nfs4_unlock(request
, state
, F_SETLK
, status
);
5518 struct nfs4_lockdata
{
5519 struct nfs_lock_args arg
;
5520 struct nfs_lock_res res
;
5521 struct nfs4_lock_state
*lsp
;
5522 struct nfs_open_context
*ctx
;
5523 struct file_lock fl
;
5524 unsigned long timestamp
;
5527 struct nfs_server
*server
;
5530 static struct nfs4_lockdata
*nfs4_alloc_lockdata(struct file_lock
*fl
,
5531 struct nfs_open_context
*ctx
, struct nfs4_lock_state
*lsp
,
5534 struct nfs4_lockdata
*p
;
5535 struct inode
*inode
= lsp
->ls_state
->inode
;
5536 struct nfs_server
*server
= NFS_SERVER(inode
);
5538 p
= kzalloc(sizeof(*p
), gfp_mask
);
5542 p
->arg
.fh
= NFS_FH(inode
);
5544 p
->arg
.open_seqid
= nfs_alloc_seqid(&lsp
->ls_state
->owner
->so_seqid
, gfp_mask
);
5545 if (p
->arg
.open_seqid
== NULL
)
5547 p
->arg
.lock_seqid
= nfs_alloc_seqid(&lsp
->ls_seqid
, gfp_mask
);
5548 if (p
->arg
.lock_seqid
== NULL
)
5549 goto out_free_seqid
;
5550 p
->arg
.lock_stateid
= &lsp
->ls_stateid
;
5551 p
->arg
.lock_owner
.clientid
= server
->nfs_client
->cl_clientid
;
5552 p
->arg
.lock_owner
.id
= lsp
->ls_seqid
.owner_id
;
5553 p
->arg
.lock_owner
.s_dev
= server
->s_dev
;
5554 p
->res
.lock_seqid
= p
->arg
.lock_seqid
;
5557 atomic_inc(&lsp
->ls_count
);
5558 p
->ctx
= get_nfs_open_context(ctx
);
5559 memcpy(&p
->fl
, fl
, sizeof(p
->fl
));
5562 nfs_free_seqid(p
->arg
.open_seqid
);
5568 static void nfs4_lock_prepare(struct rpc_task
*task
, void *calldata
)
5570 struct nfs4_lockdata
*data
= calldata
;
5571 struct nfs4_state
*state
= data
->lsp
->ls_state
;
5573 dprintk("%s: begin!\n", __func__
);
5574 if (nfs_wait_on_sequence(data
->arg
.lock_seqid
, task
) != 0)
5576 /* Do we need to do an open_to_lock_owner? */
5577 if (!(data
->arg
.lock_seqid
->sequence
->flags
& NFS_SEQID_CONFIRMED
)) {
5578 if (nfs_wait_on_sequence(data
->arg
.open_seqid
, task
) != 0) {
5579 goto out_release_lock_seqid
;
5581 data
->arg
.open_stateid
= &state
->open_stateid
;
5582 data
->arg
.new_lock_owner
= 1;
5583 data
->res
.open_seqid
= data
->arg
.open_seqid
;
5585 data
->arg
.new_lock_owner
= 0;
5586 if (!nfs4_valid_open_stateid(state
)) {
5587 data
->rpc_status
= -EBADF
;
5588 task
->tk_action
= NULL
;
5589 goto out_release_open_seqid
;
5591 data
->timestamp
= jiffies
;
5592 if (nfs4_setup_sequence(data
->server
,
5593 &data
->arg
.seq_args
,
5597 out_release_open_seqid
:
5598 nfs_release_seqid(data
->arg
.open_seqid
);
5599 out_release_lock_seqid
:
5600 nfs_release_seqid(data
->arg
.lock_seqid
);
5602 nfs4_sequence_done(task
, &data
->res
.seq_res
);
5603 dprintk("%s: done!, ret = %d\n", __func__
, data
->rpc_status
);
5606 static void nfs4_lock_done(struct rpc_task
*task
, void *calldata
)
5608 struct nfs4_lockdata
*data
= calldata
;
5610 dprintk("%s: begin!\n", __func__
);
5612 if (!nfs4_sequence_done(task
, &data
->res
.seq_res
))
5615 data
->rpc_status
= task
->tk_status
;
5616 if (data
->arg
.new_lock_owner
!= 0) {
5617 if (data
->rpc_status
== 0)
5618 nfs_confirm_seqid(&data
->lsp
->ls_seqid
, 0);
5622 if (data
->rpc_status
== 0) {
5623 nfs4_stateid_copy(&data
->lsp
->ls_stateid
, &data
->res
.stateid
);
5624 set_bit(NFS_LOCK_INITIALIZED
, &data
->lsp
->ls_flags
);
5625 renew_lease(NFS_SERVER(data
->ctx
->dentry
->d_inode
), data
->timestamp
);
5628 dprintk("%s: done, ret = %d!\n", __func__
, data
->rpc_status
);
5631 static void nfs4_lock_release(void *calldata
)
5633 struct nfs4_lockdata
*data
= calldata
;
5635 dprintk("%s: begin!\n", __func__
);
5636 nfs_free_seqid(data
->arg
.open_seqid
);
5637 if (data
->cancelled
!= 0) {
5638 struct rpc_task
*task
;
5639 task
= nfs4_do_unlck(&data
->fl
, data
->ctx
, data
->lsp
,
5640 data
->arg
.lock_seqid
);
5642 rpc_put_task_async(task
);
5643 dprintk("%s: cancelling lock!\n", __func__
);
5645 nfs_free_seqid(data
->arg
.lock_seqid
);
5646 nfs4_put_lock_state(data
->lsp
);
5647 put_nfs_open_context(data
->ctx
);
5649 dprintk("%s: done!\n", __func__
);
5652 static const struct rpc_call_ops nfs4_lock_ops
= {
5653 .rpc_call_prepare
= nfs4_lock_prepare
,
5654 .rpc_call_done
= nfs4_lock_done
,
5655 .rpc_release
= nfs4_lock_release
,
5658 static void nfs4_handle_setlk_error(struct nfs_server
*server
, struct nfs4_lock_state
*lsp
, int new_lock_owner
, int error
)
5661 case -NFS4ERR_ADMIN_REVOKED
:
5662 case -NFS4ERR_BAD_STATEID
:
5663 lsp
->ls_seqid
.flags
&= ~NFS_SEQID_CONFIRMED
;
5664 if (new_lock_owner
!= 0 ||
5665 test_bit(NFS_LOCK_INITIALIZED
, &lsp
->ls_flags
) != 0)
5666 nfs4_schedule_stateid_recovery(server
, lsp
->ls_state
);
5668 case -NFS4ERR_STALE_STATEID
:
5669 lsp
->ls_seqid
.flags
&= ~NFS_SEQID_CONFIRMED
;
5670 case -NFS4ERR_EXPIRED
:
5671 nfs4_schedule_lease_recovery(server
->nfs_client
);
5675 static int _nfs4_do_setlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*fl
, int recovery_type
)
5677 struct nfs4_lockdata
*data
;
5678 struct rpc_task
*task
;
5679 struct rpc_message msg
= {
5680 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOCK
],
5681 .rpc_cred
= state
->owner
->so_cred
,
5683 struct rpc_task_setup task_setup_data
= {
5684 .rpc_client
= NFS_CLIENT(state
->inode
),
5685 .rpc_message
= &msg
,
5686 .callback_ops
= &nfs4_lock_ops
,
5687 .workqueue
= nfsiod_workqueue
,
5688 .flags
= RPC_TASK_ASYNC
,
5692 dprintk("%s: begin!\n", __func__
);
5693 data
= nfs4_alloc_lockdata(fl
, nfs_file_open_context(fl
->fl_file
),
5694 fl
->fl_u
.nfs4_fl
.owner
,
5695 recovery_type
== NFS_LOCK_NEW
? GFP_KERNEL
: GFP_NOFS
);
5699 data
->arg
.block
= 1;
5700 nfs4_init_sequence(&data
->arg
.seq_args
, &data
->res
.seq_res
, 1);
5701 msg
.rpc_argp
= &data
->arg
;
5702 msg
.rpc_resp
= &data
->res
;
5703 task_setup_data
.callback_data
= data
;
5704 if (recovery_type
> NFS_LOCK_NEW
) {
5705 if (recovery_type
== NFS_LOCK_RECLAIM
)
5706 data
->arg
.reclaim
= NFS_LOCK_RECLAIM
;
5707 nfs4_set_sequence_privileged(&data
->arg
.seq_args
);
5709 task
= rpc_run_task(&task_setup_data
);
5711 return PTR_ERR(task
);
5712 ret
= nfs4_wait_for_completion_rpc_task(task
);
5714 ret
= data
->rpc_status
;
5716 nfs4_handle_setlk_error(data
->server
, data
->lsp
,
5717 data
->arg
.new_lock_owner
, ret
);
5719 data
->cancelled
= 1;
5721 dprintk("%s: done, ret = %d!\n", __func__
, ret
);
5725 static int nfs4_lock_reclaim(struct nfs4_state
*state
, struct file_lock
*request
)
5727 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
5728 struct nfs4_exception exception
= {
5729 .inode
= state
->inode
,
5734 /* Cache the lock if possible... */
5735 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) != 0)
5737 err
= _nfs4_do_setlk(state
, F_SETLK
, request
, NFS_LOCK_RECLAIM
);
5738 trace_nfs4_lock_reclaim(request
, state
, F_SETLK
, err
);
5739 if (err
!= -NFS4ERR_DELAY
)
5741 nfs4_handle_exception(server
, err
, &exception
);
5742 } while (exception
.retry
);
5746 static int nfs4_lock_expired(struct nfs4_state
*state
, struct file_lock
*request
)
5748 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
5749 struct nfs4_exception exception
= {
5750 .inode
= state
->inode
,
5754 err
= nfs4_set_lock_state(state
, request
);
5757 if (!recover_lost_locks
) {
5758 set_bit(NFS_LOCK_LOST
, &request
->fl_u
.nfs4_fl
.owner
->ls_flags
);
5762 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) != 0)
5764 err
= _nfs4_do_setlk(state
, F_SETLK
, request
, NFS_LOCK_EXPIRED
);
5765 trace_nfs4_lock_expired(request
, state
, F_SETLK
, err
);
5769 case -NFS4ERR_GRACE
:
5770 case -NFS4ERR_DELAY
:
5771 nfs4_handle_exception(server
, err
, &exception
);
5774 } while (exception
.retry
);
5779 #if defined(CONFIG_NFS_V4_1)
5781 * nfs41_check_expired_locks - possibly free a lock stateid
5783 * @state: NFSv4 state for an inode
5785 * Returns NFS_OK if recovery for this stateid is now finished.
5786 * Otherwise a negative NFS4ERR value is returned.
5788 static int nfs41_check_expired_locks(struct nfs4_state
*state
)
5790 int status
, ret
= -NFS4ERR_BAD_STATEID
;
5791 struct nfs4_lock_state
*lsp
;
5792 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
5794 list_for_each_entry(lsp
, &state
->lock_states
, ls_locks
) {
5795 if (test_bit(NFS_LOCK_INITIALIZED
, &lsp
->ls_flags
)) {
5796 struct rpc_cred
*cred
= lsp
->ls_state
->owner
->so_cred
;
5798 status
= nfs41_test_stateid(server
,
5801 trace_nfs4_test_lock_stateid(state
, lsp
, status
);
5802 if (status
!= NFS_OK
) {
5803 /* Free the stateid unless the server
5804 * informs us the stateid is unrecognized. */
5805 if (status
!= -NFS4ERR_BAD_STATEID
)
5806 nfs41_free_stateid(server
,
5809 clear_bit(NFS_LOCK_INITIALIZED
, &lsp
->ls_flags
);
5818 static int nfs41_lock_expired(struct nfs4_state
*state
, struct file_lock
*request
)
5820 int status
= NFS_OK
;
5822 if (test_bit(LK_STATE_IN_USE
, &state
->flags
))
5823 status
= nfs41_check_expired_locks(state
);
5824 if (status
!= NFS_OK
)
5825 status
= nfs4_lock_expired(state
, request
);
5830 static int _nfs4_proc_setlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
5832 struct nfs4_state_owner
*sp
= state
->owner
;
5833 struct nfs_inode
*nfsi
= NFS_I(state
->inode
);
5834 unsigned char fl_flags
= request
->fl_flags
;
5836 int status
= -ENOLCK
;
5838 if ((fl_flags
& FL_POSIX
) &&
5839 !test_bit(NFS_STATE_POSIX_LOCKS
, &state
->flags
))
5841 /* Is this a delegated open? */
5842 status
= nfs4_set_lock_state(state
, request
);
5845 request
->fl_flags
|= FL_ACCESS
;
5846 status
= do_vfs_lock(request
->fl_file
, request
);
5849 down_read(&nfsi
->rwsem
);
5850 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
)) {
5851 /* Yes: cache locks! */
5852 /* ...but avoid races with delegation recall... */
5853 request
->fl_flags
= fl_flags
& ~FL_SLEEP
;
5854 status
= do_vfs_lock(request
->fl_file
, request
);
5857 seq
= raw_seqcount_begin(&sp
->so_reclaim_seqcount
);
5858 up_read(&nfsi
->rwsem
);
5859 status
= _nfs4_do_setlk(state
, cmd
, request
, NFS_LOCK_NEW
);
5862 down_read(&nfsi
->rwsem
);
5863 if (read_seqcount_retry(&sp
->so_reclaim_seqcount
, seq
)) {
5864 status
= -NFS4ERR_DELAY
;
5867 /* Note: we always want to sleep here! */
5868 request
->fl_flags
= fl_flags
| FL_SLEEP
;
5869 if (do_vfs_lock(request
->fl_file
, request
) < 0)
5870 printk(KERN_WARNING
"NFS: %s: VFS is out of sync with lock "
5871 "manager!\n", __func__
);
5873 up_read(&nfsi
->rwsem
);
5875 request
->fl_flags
= fl_flags
;
5879 static int nfs4_proc_setlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
5881 struct nfs4_exception exception
= {
5883 .inode
= state
->inode
,
5888 err
= _nfs4_proc_setlk(state
, cmd
, request
);
5889 trace_nfs4_set_lock(request
, state
, cmd
, err
);
5890 if (err
== -NFS4ERR_DENIED
)
5892 err
= nfs4_handle_exception(NFS_SERVER(state
->inode
),
5894 } while (exception
.retry
);
5899 nfs4_proc_lock(struct file
*filp
, int cmd
, struct file_lock
*request
)
5901 struct nfs_open_context
*ctx
;
5902 struct nfs4_state
*state
;
5903 unsigned long timeout
= NFS4_LOCK_MINTIMEOUT
;
5906 /* verify open state */
5907 ctx
= nfs_file_open_context(filp
);
5910 if (request
->fl_start
< 0 || request
->fl_end
< 0)
5913 if (IS_GETLK(cmd
)) {
5915 return nfs4_proc_getlk(state
, F_GETLK
, request
);
5919 if (!(IS_SETLK(cmd
) || IS_SETLKW(cmd
)))
5922 if (request
->fl_type
== F_UNLCK
) {
5924 return nfs4_proc_unlck(state
, cmd
, request
);
5931 * Don't rely on the VFS having checked the file open mode,
5932 * since it won't do this for flock() locks.
5934 switch (request
->fl_type
) {
5936 if (!(filp
->f_mode
& FMODE_READ
))
5940 if (!(filp
->f_mode
& FMODE_WRITE
))
5945 status
= nfs4_proc_setlk(state
, cmd
, request
);
5946 if ((status
!= -EAGAIN
) || IS_SETLK(cmd
))
5948 timeout
= nfs4_set_lock_task_retry(timeout
);
5949 status
= -ERESTARTSYS
;
5952 } while(status
< 0);
5956 int nfs4_lock_delegation_recall(struct file_lock
*fl
, struct nfs4_state
*state
, const nfs4_stateid
*stateid
)
5958 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
5961 err
= nfs4_set_lock_state(state
, fl
);
5964 err
= _nfs4_do_setlk(state
, F_SETLK
, fl
, NFS_LOCK_NEW
);
5965 return nfs4_handle_delegation_recall_error(server
, state
, stateid
, err
);
5968 struct nfs_release_lockowner_data
{
5969 struct nfs4_lock_state
*lsp
;
5970 struct nfs_server
*server
;
5971 struct nfs_release_lockowner_args args
;
5972 struct nfs_release_lockowner_res res
;
5973 unsigned long timestamp
;
5976 static void nfs4_release_lockowner_prepare(struct rpc_task
*task
, void *calldata
)
5978 struct nfs_release_lockowner_data
*data
= calldata
;
5979 struct nfs_server
*server
= data
->server
;
5980 nfs40_setup_sequence(server
->nfs_client
->cl_slot_tbl
,
5981 &data
->args
.seq_args
, &data
->res
.seq_res
, task
);
5982 data
->args
.lock_owner
.clientid
= server
->nfs_client
->cl_clientid
;
5983 data
->timestamp
= jiffies
;
5986 static void nfs4_release_lockowner_done(struct rpc_task
*task
, void *calldata
)
5988 struct nfs_release_lockowner_data
*data
= calldata
;
5989 struct nfs_server
*server
= data
->server
;
5991 nfs40_sequence_done(task
, &data
->res
.seq_res
);
5993 switch (task
->tk_status
) {
5995 renew_lease(server
, data
->timestamp
);
5997 case -NFS4ERR_STALE_CLIENTID
:
5998 case -NFS4ERR_EXPIRED
:
5999 nfs4_schedule_lease_recovery(server
->nfs_client
);
6001 case -NFS4ERR_LEASE_MOVED
:
6002 case -NFS4ERR_DELAY
:
6003 if (nfs4_async_handle_error(task
, server
,
6004 NULL
, NULL
) == -EAGAIN
)
6005 rpc_restart_call_prepare(task
);
6009 static void nfs4_release_lockowner_release(void *calldata
)
6011 struct nfs_release_lockowner_data
*data
= calldata
;
6012 nfs4_free_lock_state(data
->server
, data
->lsp
);
6016 static const struct rpc_call_ops nfs4_release_lockowner_ops
= {
6017 .rpc_call_prepare
= nfs4_release_lockowner_prepare
,
6018 .rpc_call_done
= nfs4_release_lockowner_done
,
6019 .rpc_release
= nfs4_release_lockowner_release
,
6023 nfs4_release_lockowner(struct nfs_server
*server
, struct nfs4_lock_state
*lsp
)
6025 struct nfs_release_lockowner_data
*data
;
6026 struct rpc_message msg
= {
6027 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RELEASE_LOCKOWNER
],
6030 if (server
->nfs_client
->cl_mvops
->minor_version
!= 0)
6033 data
= kmalloc(sizeof(*data
), GFP_NOFS
);
6037 data
->server
= server
;
6038 data
->args
.lock_owner
.clientid
= server
->nfs_client
->cl_clientid
;
6039 data
->args
.lock_owner
.id
= lsp
->ls_seqid
.owner_id
;
6040 data
->args
.lock_owner
.s_dev
= server
->s_dev
;
6042 msg
.rpc_argp
= &data
->args
;
6043 msg
.rpc_resp
= &data
->res
;
6044 nfs4_init_sequence(&data
->args
.seq_args
, &data
->res
.seq_res
, 0);
6045 rpc_call_async(server
->client
, &msg
, 0, &nfs4_release_lockowner_ops
, data
);
6048 #define XATTR_NAME_NFSV4_ACL "system.nfs4_acl"
6050 static int nfs4_xattr_set_nfs4_acl(struct dentry
*dentry
, const char *key
,
6051 const void *buf
, size_t buflen
,
6052 int flags
, int type
)
6054 if (strcmp(key
, "") != 0)
6057 return nfs4_proc_set_acl(dentry
->d_inode
, buf
, buflen
);
6060 static int nfs4_xattr_get_nfs4_acl(struct dentry
*dentry
, const char *key
,
6061 void *buf
, size_t buflen
, int type
)
6063 if (strcmp(key
, "") != 0)
6066 return nfs4_proc_get_acl(dentry
->d_inode
, buf
, buflen
);
6069 static size_t nfs4_xattr_list_nfs4_acl(struct dentry
*dentry
, char *list
,
6070 size_t list_len
, const char *name
,
6071 size_t name_len
, int type
)
6073 size_t len
= sizeof(XATTR_NAME_NFSV4_ACL
);
6075 if (!nfs4_server_supports_acls(NFS_SERVER(dentry
->d_inode
)))
6078 if (list
&& len
<= list_len
)
6079 memcpy(list
, XATTR_NAME_NFSV4_ACL
, len
);
6083 #ifdef CONFIG_NFS_V4_SECURITY_LABEL
6084 static inline int nfs4_server_supports_labels(struct nfs_server
*server
)
6086 return server
->caps
& NFS_CAP_SECURITY_LABEL
;
6089 static int nfs4_xattr_set_nfs4_label(struct dentry
*dentry
, const char *key
,
6090 const void *buf
, size_t buflen
,
6091 int flags
, int type
)
6093 if (security_ismaclabel(key
))
6094 return nfs4_set_security_label(dentry
, buf
, buflen
);
6099 static int nfs4_xattr_get_nfs4_label(struct dentry
*dentry
, const char *key
,
6100 void *buf
, size_t buflen
, int type
)
6102 if (security_ismaclabel(key
))
6103 return nfs4_get_security_label(dentry
->d_inode
, buf
, buflen
);
6107 static size_t nfs4_xattr_list_nfs4_label(struct dentry
*dentry
, char *list
,
6108 size_t list_len
, const char *name
,
6109 size_t name_len
, int type
)
6113 if (nfs_server_capable(dentry
->d_inode
, NFS_CAP_SECURITY_LABEL
)) {
6114 len
= security_inode_listsecurity(dentry
->d_inode
, NULL
, 0);
6115 if (list
&& len
<= list_len
)
6116 security_inode_listsecurity(dentry
->d_inode
, list
, len
);
6121 static const struct xattr_handler nfs4_xattr_nfs4_label_handler
= {
6122 .prefix
= XATTR_SECURITY_PREFIX
,
6123 .list
= nfs4_xattr_list_nfs4_label
,
6124 .get
= nfs4_xattr_get_nfs4_label
,
6125 .set
= nfs4_xattr_set_nfs4_label
,
6131 * nfs_fhget will use either the mounted_on_fileid or the fileid
6133 static void nfs_fixup_referral_attributes(struct nfs_fattr
*fattr
)
6135 if (!(((fattr
->valid
& NFS_ATTR_FATTR_MOUNTED_ON_FILEID
) ||
6136 (fattr
->valid
& NFS_ATTR_FATTR_FILEID
)) &&
6137 (fattr
->valid
& NFS_ATTR_FATTR_FSID
) &&
6138 (fattr
->valid
& NFS_ATTR_FATTR_V4_LOCATIONS
)))
6141 fattr
->valid
|= NFS_ATTR_FATTR_TYPE
| NFS_ATTR_FATTR_MODE
|
6142 NFS_ATTR_FATTR_NLINK
| NFS_ATTR_FATTR_V4_REFERRAL
;
6143 fattr
->mode
= S_IFDIR
| S_IRUGO
| S_IXUGO
;
6147 static int _nfs4_proc_fs_locations(struct rpc_clnt
*client
, struct inode
*dir
,
6148 const struct qstr
*name
,
6149 struct nfs4_fs_locations
*fs_locations
,
6152 struct nfs_server
*server
= NFS_SERVER(dir
);
6154 [0] = FATTR4_WORD0_FSID
| FATTR4_WORD0_FS_LOCATIONS
,
6156 struct nfs4_fs_locations_arg args
= {
6157 .dir_fh
= NFS_FH(dir
),
6162 struct nfs4_fs_locations_res res
= {
6163 .fs_locations
= fs_locations
,
6165 struct rpc_message msg
= {
6166 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_FS_LOCATIONS
],
6172 dprintk("%s: start\n", __func__
);
6174 /* Ask for the fileid of the absent filesystem if mounted_on_fileid
6175 * is not supported */
6176 if (NFS_SERVER(dir
)->attr_bitmask
[1] & FATTR4_WORD1_MOUNTED_ON_FILEID
)
6177 bitmask
[1] |= FATTR4_WORD1_MOUNTED_ON_FILEID
;
6179 bitmask
[0] |= FATTR4_WORD0_FILEID
;
6181 nfs_fattr_init(&fs_locations
->fattr
);
6182 fs_locations
->server
= server
;
6183 fs_locations
->nlocations
= 0;
6184 status
= nfs4_call_sync(client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
6185 dprintk("%s: returned status = %d\n", __func__
, status
);
6189 int nfs4_proc_fs_locations(struct rpc_clnt
*client
, struct inode
*dir
,
6190 const struct qstr
*name
,
6191 struct nfs4_fs_locations
*fs_locations
,
6194 struct nfs4_exception exception
= { };
6197 err
= _nfs4_proc_fs_locations(client
, dir
, name
,
6198 fs_locations
, page
);
6199 trace_nfs4_get_fs_locations(dir
, name
, err
);
6200 err
= nfs4_handle_exception(NFS_SERVER(dir
), err
,
6202 } while (exception
.retry
);
6207 * This operation also signals the server that this client is
6208 * performing migration recovery. The server can stop returning
6209 * NFS4ERR_LEASE_MOVED to this client. A RENEW operation is
6210 * appended to this compound to identify the client ID which is
6211 * performing recovery.
6213 static int _nfs40_proc_get_locations(struct inode
*inode
,
6214 struct nfs4_fs_locations
*locations
,
6215 struct page
*page
, struct rpc_cred
*cred
)
6217 struct nfs_server
*server
= NFS_SERVER(inode
);
6218 struct rpc_clnt
*clnt
= server
->client
;
6220 [0] = FATTR4_WORD0_FSID
| FATTR4_WORD0_FS_LOCATIONS
,
6222 struct nfs4_fs_locations_arg args
= {
6223 .clientid
= server
->nfs_client
->cl_clientid
,
6224 .fh
= NFS_FH(inode
),
6227 .migration
= 1, /* skip LOOKUP */
6228 .renew
= 1, /* append RENEW */
6230 struct nfs4_fs_locations_res res
= {
6231 .fs_locations
= locations
,
6235 struct rpc_message msg
= {
6236 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_FS_LOCATIONS
],
6241 unsigned long now
= jiffies
;
6244 nfs_fattr_init(&locations
->fattr
);
6245 locations
->server
= server
;
6246 locations
->nlocations
= 0;
6248 nfs4_init_sequence(&args
.seq_args
, &res
.seq_res
, 0);
6249 nfs4_set_sequence_privileged(&args
.seq_args
);
6250 status
= nfs4_call_sync_sequence(clnt
, server
, &msg
,
6251 &args
.seq_args
, &res
.seq_res
);
6255 renew_lease(server
, now
);
6259 #ifdef CONFIG_NFS_V4_1
6262 * This operation also signals the server that this client is
6263 * performing migration recovery. The server can stop asserting
6264 * SEQ4_STATUS_LEASE_MOVED for this client. The client ID
6265 * performing this operation is identified in the SEQUENCE
6266 * operation in this compound.
6268 * When the client supports GETATTR(fs_locations_info), it can
6269 * be plumbed in here.
6271 static int _nfs41_proc_get_locations(struct inode
*inode
,
6272 struct nfs4_fs_locations
*locations
,
6273 struct page
*page
, struct rpc_cred
*cred
)
6275 struct nfs_server
*server
= NFS_SERVER(inode
);
6276 struct rpc_clnt
*clnt
= server
->client
;
6278 [0] = FATTR4_WORD0_FSID
| FATTR4_WORD0_FS_LOCATIONS
,
6280 struct nfs4_fs_locations_arg args
= {
6281 .fh
= NFS_FH(inode
),
6284 .migration
= 1, /* skip LOOKUP */
6286 struct nfs4_fs_locations_res res
= {
6287 .fs_locations
= locations
,
6290 struct rpc_message msg
= {
6291 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_FS_LOCATIONS
],
6298 nfs_fattr_init(&locations
->fattr
);
6299 locations
->server
= server
;
6300 locations
->nlocations
= 0;
6302 nfs4_init_sequence(&args
.seq_args
, &res
.seq_res
, 0);
6303 nfs4_set_sequence_privileged(&args
.seq_args
);
6304 status
= nfs4_call_sync_sequence(clnt
, server
, &msg
,
6305 &args
.seq_args
, &res
.seq_res
);
6306 if (status
== NFS4_OK
&&
6307 res
.seq_res
.sr_status_flags
& SEQ4_STATUS_LEASE_MOVED
)
6308 status
= -NFS4ERR_LEASE_MOVED
;
6312 #endif /* CONFIG_NFS_V4_1 */
6315 * nfs4_proc_get_locations - discover locations for a migrated FSID
6316 * @inode: inode on FSID that is migrating
6317 * @locations: result of query
6319 * @cred: credential to use for this operation
6321 * Returns NFS4_OK on success, a negative NFS4ERR status code if the
6322 * operation failed, or a negative errno if a local error occurred.
6324 * On success, "locations" is filled in, but if the server has
6325 * no locations information, NFS_ATTR_FATTR_V4_LOCATIONS is not
6328 * -NFS4ERR_LEASE_MOVED is returned if the server still has leases
6329 * from this client that require migration recovery.
6331 int nfs4_proc_get_locations(struct inode
*inode
,
6332 struct nfs4_fs_locations
*locations
,
6333 struct page
*page
, struct rpc_cred
*cred
)
6335 struct nfs_server
*server
= NFS_SERVER(inode
);
6336 struct nfs_client
*clp
= server
->nfs_client
;
6337 const struct nfs4_mig_recovery_ops
*ops
=
6338 clp
->cl_mvops
->mig_recovery_ops
;
6339 struct nfs4_exception exception
= { };
6342 dprintk("%s: FSID %llx:%llx on \"%s\"\n", __func__
,
6343 (unsigned long long)server
->fsid
.major
,
6344 (unsigned long long)server
->fsid
.minor
,
6346 nfs_display_fhandle(NFS_FH(inode
), __func__
);
6349 status
= ops
->get_locations(inode
, locations
, page
, cred
);
6350 if (status
!= -NFS4ERR_DELAY
)
6352 nfs4_handle_exception(server
, status
, &exception
);
6353 } while (exception
.retry
);
6358 * This operation also signals the server that this client is
6359 * performing "lease moved" recovery. The server can stop
6360 * returning NFS4ERR_LEASE_MOVED to this client. A RENEW operation
6361 * is appended to this compound to identify the client ID which is
6362 * performing recovery.
6364 static int _nfs40_proc_fsid_present(struct inode
*inode
, struct rpc_cred
*cred
)
6366 struct nfs_server
*server
= NFS_SERVER(inode
);
6367 struct nfs_client
*clp
= NFS_SERVER(inode
)->nfs_client
;
6368 struct rpc_clnt
*clnt
= server
->client
;
6369 struct nfs4_fsid_present_arg args
= {
6370 .fh
= NFS_FH(inode
),
6371 .clientid
= clp
->cl_clientid
,
6372 .renew
= 1, /* append RENEW */
6374 struct nfs4_fsid_present_res res
= {
6377 struct rpc_message msg
= {
6378 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_FSID_PRESENT
],
6383 unsigned long now
= jiffies
;
6386 res
.fh
= nfs_alloc_fhandle();
6390 nfs4_init_sequence(&args
.seq_args
, &res
.seq_res
, 0);
6391 nfs4_set_sequence_privileged(&args
.seq_args
);
6392 status
= nfs4_call_sync_sequence(clnt
, server
, &msg
,
6393 &args
.seq_args
, &res
.seq_res
);
6394 nfs_free_fhandle(res
.fh
);
6398 do_renew_lease(clp
, now
);
6402 #ifdef CONFIG_NFS_V4_1
6405 * This operation also signals the server that this client is
6406 * performing "lease moved" recovery. The server can stop asserting
6407 * SEQ4_STATUS_LEASE_MOVED for this client. The client ID performing
6408 * this operation is identified in the SEQUENCE operation in this
6411 static int _nfs41_proc_fsid_present(struct inode
*inode
, struct rpc_cred
*cred
)
6413 struct nfs_server
*server
= NFS_SERVER(inode
);
6414 struct rpc_clnt
*clnt
= server
->client
;
6415 struct nfs4_fsid_present_arg args
= {
6416 .fh
= NFS_FH(inode
),
6418 struct nfs4_fsid_present_res res
= {
6420 struct rpc_message msg
= {
6421 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_FSID_PRESENT
],
6428 res
.fh
= nfs_alloc_fhandle();
6432 nfs4_init_sequence(&args
.seq_args
, &res
.seq_res
, 0);
6433 nfs4_set_sequence_privileged(&args
.seq_args
);
6434 status
= nfs4_call_sync_sequence(clnt
, server
, &msg
,
6435 &args
.seq_args
, &res
.seq_res
);
6436 nfs_free_fhandle(res
.fh
);
6437 if (status
== NFS4_OK
&&
6438 res
.seq_res
.sr_status_flags
& SEQ4_STATUS_LEASE_MOVED
)
6439 status
= -NFS4ERR_LEASE_MOVED
;
6443 #endif /* CONFIG_NFS_V4_1 */
6446 * nfs4_proc_fsid_present - Is this FSID present or absent on server?
6447 * @inode: inode on FSID to check
6448 * @cred: credential to use for this operation
6450 * Server indicates whether the FSID is present, moved, or not
6451 * recognized. This operation is necessary to clear a LEASE_MOVED
6452 * condition for this client ID.
6454 * Returns NFS4_OK if the FSID is present on this server,
6455 * -NFS4ERR_MOVED if the FSID is no longer present, a negative
6456 * NFS4ERR code if some error occurred on the server, or a
6457 * negative errno if a local failure occurred.
6459 int nfs4_proc_fsid_present(struct inode
*inode
, struct rpc_cred
*cred
)
6461 struct nfs_server
*server
= NFS_SERVER(inode
);
6462 struct nfs_client
*clp
= server
->nfs_client
;
6463 const struct nfs4_mig_recovery_ops
*ops
=
6464 clp
->cl_mvops
->mig_recovery_ops
;
6465 struct nfs4_exception exception
= { };
6468 dprintk("%s: FSID %llx:%llx on \"%s\"\n", __func__
,
6469 (unsigned long long)server
->fsid
.major
,
6470 (unsigned long long)server
->fsid
.minor
,
6472 nfs_display_fhandle(NFS_FH(inode
), __func__
);
6475 status
= ops
->fsid_present(inode
, cred
);
6476 if (status
!= -NFS4ERR_DELAY
)
6478 nfs4_handle_exception(server
, status
, &exception
);
6479 } while (exception
.retry
);
6484 * If 'use_integrity' is true and the state managment nfs_client
6485 * cl_rpcclient is using krb5i/p, use the integrity protected cl_rpcclient
6486 * and the machine credential as per RFC3530bis and RFC5661 Security
6487 * Considerations sections. Otherwise, just use the user cred with the
6488 * filesystem's rpc_client.
6490 static int _nfs4_proc_secinfo(struct inode
*dir
, const struct qstr
*name
, struct nfs4_secinfo_flavors
*flavors
, bool use_integrity
)
6493 struct nfs4_secinfo_arg args
= {
6494 .dir_fh
= NFS_FH(dir
),
6497 struct nfs4_secinfo_res res
= {
6500 struct rpc_message msg
= {
6501 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SECINFO
],
6505 struct rpc_clnt
*clnt
= NFS_SERVER(dir
)->client
;
6506 struct rpc_cred
*cred
= NULL
;
6508 if (use_integrity
) {
6509 clnt
= NFS_SERVER(dir
)->nfs_client
->cl_rpcclient
;
6510 cred
= nfs4_get_clid_cred(NFS_SERVER(dir
)->nfs_client
);
6511 msg
.rpc_cred
= cred
;
6514 dprintk("NFS call secinfo %s\n", name
->name
);
6516 nfs4_state_protect(NFS_SERVER(dir
)->nfs_client
,
6517 NFS_SP4_MACH_CRED_SECINFO
, &clnt
, &msg
);
6519 status
= nfs4_call_sync(clnt
, NFS_SERVER(dir
), &msg
, &args
.seq_args
,
6521 dprintk("NFS reply secinfo: %d\n", status
);
6529 int nfs4_proc_secinfo(struct inode
*dir
, const struct qstr
*name
,
6530 struct nfs4_secinfo_flavors
*flavors
)
6532 struct nfs4_exception exception
= { };
6535 err
= -NFS4ERR_WRONGSEC
;
6537 /* try to use integrity protection with machine cred */
6538 if (_nfs4_is_integrity_protected(NFS_SERVER(dir
)->nfs_client
))
6539 err
= _nfs4_proc_secinfo(dir
, name
, flavors
, true);
6542 * if unable to use integrity protection, or SECINFO with
6543 * integrity protection returns NFS4ERR_WRONGSEC (which is
6544 * disallowed by spec, but exists in deployed servers) use
6545 * the current filesystem's rpc_client and the user cred.
6547 if (err
== -NFS4ERR_WRONGSEC
)
6548 err
= _nfs4_proc_secinfo(dir
, name
, flavors
, false);
6550 trace_nfs4_secinfo(dir
, name
, err
);
6551 err
= nfs4_handle_exception(NFS_SERVER(dir
), err
,
6553 } while (exception
.retry
);
6557 #ifdef CONFIG_NFS_V4_1
6559 * Check the exchange flags returned by the server for invalid flags, having
6560 * both PNFS and NON_PNFS flags set, and not having one of NON_PNFS, PNFS, or
6563 static int nfs4_check_cl_exchange_flags(u32 flags
)
6565 if (flags
& ~EXCHGID4_FLAG_MASK_R
)
6567 if ((flags
& EXCHGID4_FLAG_USE_PNFS_MDS
) &&
6568 (flags
& EXCHGID4_FLAG_USE_NON_PNFS
))
6570 if (!(flags
& (EXCHGID4_FLAG_MASK_PNFS
)))
6574 return -NFS4ERR_INVAL
;
6578 nfs41_same_server_scope(struct nfs41_server_scope
*a
,
6579 struct nfs41_server_scope
*b
)
6581 if (a
->server_scope_sz
== b
->server_scope_sz
&&
6582 memcmp(a
->server_scope
, b
->server_scope
, a
->server_scope_sz
) == 0)
6589 * nfs4_proc_bind_conn_to_session()
6591 * The 4.1 client currently uses the same TCP connection for the
6592 * fore and backchannel.
6594 int nfs4_proc_bind_conn_to_session(struct nfs_client
*clp
, struct rpc_cred
*cred
)
6597 struct nfs41_bind_conn_to_session_res res
;
6598 struct rpc_message msg
= {
6600 &nfs4_procedures
[NFSPROC4_CLNT_BIND_CONN_TO_SESSION
],
6606 dprintk("--> %s\n", __func__
);
6608 res
.session
= kzalloc(sizeof(struct nfs4_session
), GFP_NOFS
);
6609 if (unlikely(res
.session
== NULL
)) {
6614 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
6615 trace_nfs4_bind_conn_to_session(clp
, status
);
6617 if (memcmp(res
.session
->sess_id
.data
,
6618 clp
->cl_session
->sess_id
.data
, NFS4_MAX_SESSIONID_LEN
)) {
6619 dprintk("NFS: %s: Session ID mismatch\n", __func__
);
6623 if (res
.dir
!= NFS4_CDFS4_BOTH
) {
6624 dprintk("NFS: %s: Unexpected direction from server\n",
6629 if (res
.use_conn_in_rdma_mode
) {
6630 dprintk("NFS: %s: Server returned RDMA mode = true\n",
6639 dprintk("<-- %s status= %d\n", __func__
, status
);
6644 * Minimum set of SP4_MACH_CRED operations from RFC 5661 in the enforce map
6645 * and operations we'd like to see to enable certain features in the allow map
6647 static const struct nfs41_state_protection nfs4_sp4_mach_cred_request
= {
6648 .how
= SP4_MACH_CRED
,
6649 .enforce
.u
.words
= {
6650 [1] = 1 << (OP_BIND_CONN_TO_SESSION
- 32) |
6651 1 << (OP_EXCHANGE_ID
- 32) |
6652 1 << (OP_CREATE_SESSION
- 32) |
6653 1 << (OP_DESTROY_SESSION
- 32) |
6654 1 << (OP_DESTROY_CLIENTID
- 32)
6657 [0] = 1 << (OP_CLOSE
) |
6660 [1] = 1 << (OP_SECINFO
- 32) |
6661 1 << (OP_SECINFO_NO_NAME
- 32) |
6662 1 << (OP_TEST_STATEID
- 32) |
6663 1 << (OP_FREE_STATEID
- 32) |
6664 1 << (OP_WRITE
- 32)
6669 * Select the state protection mode for client `clp' given the server results
6670 * from exchange_id in `sp'.
6672 * Returns 0 on success, negative errno otherwise.
6674 static int nfs4_sp4_select_mode(struct nfs_client
*clp
,
6675 struct nfs41_state_protection
*sp
)
6677 static const u32 supported_enforce
[NFS4_OP_MAP_NUM_WORDS
] = {
6678 [1] = 1 << (OP_BIND_CONN_TO_SESSION
- 32) |
6679 1 << (OP_EXCHANGE_ID
- 32) |
6680 1 << (OP_CREATE_SESSION
- 32) |
6681 1 << (OP_DESTROY_SESSION
- 32) |
6682 1 << (OP_DESTROY_CLIENTID
- 32)
6686 if (sp
->how
== SP4_MACH_CRED
) {
6687 /* Print state protect result */
6688 dfprintk(MOUNT
, "Server SP4_MACH_CRED support:\n");
6689 for (i
= 0; i
<= LAST_NFS4_OP
; i
++) {
6690 if (test_bit(i
, sp
->enforce
.u
.longs
))
6691 dfprintk(MOUNT
, " enforce op %d\n", i
);
6692 if (test_bit(i
, sp
->allow
.u
.longs
))
6693 dfprintk(MOUNT
, " allow op %d\n", i
);
6696 /* make sure nothing is on enforce list that isn't supported */
6697 for (i
= 0; i
< NFS4_OP_MAP_NUM_WORDS
; i
++) {
6698 if (sp
->enforce
.u
.words
[i
] & ~supported_enforce
[i
]) {
6699 dfprintk(MOUNT
, "sp4_mach_cred: disabled\n");
6705 * Minimal mode - state operations are allowed to use machine
6706 * credential. Note this already happens by default, so the
6707 * client doesn't have to do anything more than the negotiation.
6709 * NOTE: we don't care if EXCHANGE_ID is in the list -
6710 * we're already using the machine cred for exchange_id
6711 * and will never use a different cred.
6713 if (test_bit(OP_BIND_CONN_TO_SESSION
, sp
->enforce
.u
.longs
) &&
6714 test_bit(OP_CREATE_SESSION
, sp
->enforce
.u
.longs
) &&
6715 test_bit(OP_DESTROY_SESSION
, sp
->enforce
.u
.longs
) &&
6716 test_bit(OP_DESTROY_CLIENTID
, sp
->enforce
.u
.longs
)) {
6717 dfprintk(MOUNT
, "sp4_mach_cred:\n");
6718 dfprintk(MOUNT
, " minimal mode enabled\n");
6719 set_bit(NFS_SP4_MACH_CRED_MINIMAL
, &clp
->cl_sp4_flags
);
6721 dfprintk(MOUNT
, "sp4_mach_cred: disabled\n");
6725 if (test_bit(OP_CLOSE
, sp
->allow
.u
.longs
) &&
6726 test_bit(OP_LOCKU
, sp
->allow
.u
.longs
)) {
6727 dfprintk(MOUNT
, " cleanup mode enabled\n");
6728 set_bit(NFS_SP4_MACH_CRED_CLEANUP
, &clp
->cl_sp4_flags
);
6731 if (test_bit(OP_SECINFO
, sp
->allow
.u
.longs
) &&
6732 test_bit(OP_SECINFO_NO_NAME
, sp
->allow
.u
.longs
)) {
6733 dfprintk(MOUNT
, " secinfo mode enabled\n");
6734 set_bit(NFS_SP4_MACH_CRED_SECINFO
, &clp
->cl_sp4_flags
);
6737 if (test_bit(OP_TEST_STATEID
, sp
->allow
.u
.longs
) &&
6738 test_bit(OP_FREE_STATEID
, sp
->allow
.u
.longs
)) {
6739 dfprintk(MOUNT
, " stateid mode enabled\n");
6740 set_bit(NFS_SP4_MACH_CRED_STATEID
, &clp
->cl_sp4_flags
);
6743 if (test_bit(OP_WRITE
, sp
->allow
.u
.longs
)) {
6744 dfprintk(MOUNT
, " write mode enabled\n");
6745 set_bit(NFS_SP4_MACH_CRED_WRITE
, &clp
->cl_sp4_flags
);
6748 if (test_bit(OP_COMMIT
, sp
->allow
.u
.longs
)) {
6749 dfprintk(MOUNT
, " commit mode enabled\n");
6750 set_bit(NFS_SP4_MACH_CRED_COMMIT
, &clp
->cl_sp4_flags
);
6758 * _nfs4_proc_exchange_id()
6760 * Wrapper for EXCHANGE_ID operation.
6762 static int _nfs4_proc_exchange_id(struct nfs_client
*clp
, struct rpc_cred
*cred
,
6765 nfs4_verifier verifier
;
6766 struct nfs41_exchange_id_args args
= {
6767 .verifier
= &verifier
,
6769 #ifdef CONFIG_NFS_V4_1_MIGRATION
6770 .flags
= EXCHGID4_FLAG_SUPP_MOVED_REFER
|
6771 EXCHGID4_FLAG_BIND_PRINC_STATEID
|
6772 EXCHGID4_FLAG_SUPP_MOVED_MIGR
,
6774 .flags
= EXCHGID4_FLAG_SUPP_MOVED_REFER
|
6775 EXCHGID4_FLAG_BIND_PRINC_STATEID
,
6778 struct nfs41_exchange_id_res res
= {
6782 struct rpc_message msg
= {
6783 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_EXCHANGE_ID
],
6789 nfs4_init_boot_verifier(clp
, &verifier
);
6790 args
.id_len
= nfs4_init_uniform_client_string(clp
, args
.id
,
6792 dprintk("NFS call exchange_id auth=%s, '%.*s'\n",
6793 clp
->cl_rpcclient
->cl_auth
->au_ops
->au_name
,
6794 args
.id_len
, args
.id
);
6796 res
.server_owner
= kzalloc(sizeof(struct nfs41_server_owner
),
6798 if (unlikely(res
.server_owner
== NULL
)) {
6803 res
.server_scope
= kzalloc(sizeof(struct nfs41_server_scope
),
6805 if (unlikely(res
.server_scope
== NULL
)) {
6807 goto out_server_owner
;
6810 res
.impl_id
= kzalloc(sizeof(struct nfs41_impl_id
), GFP_NOFS
);
6811 if (unlikely(res
.impl_id
== NULL
)) {
6813 goto out_server_scope
;
6818 args
.state_protect
.how
= SP4_NONE
;
6822 args
.state_protect
= nfs4_sp4_mach_cred_request
;
6829 goto out_server_scope
;
6832 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
6833 trace_nfs4_exchange_id(clp
, status
);
6835 status
= nfs4_check_cl_exchange_flags(res
.flags
);
6838 status
= nfs4_sp4_select_mode(clp
, &res
.state_protect
);
6841 clp
->cl_clientid
= res
.clientid
;
6842 clp
->cl_exchange_flags
= (res
.flags
& ~EXCHGID4_FLAG_CONFIRMED_R
);
6843 if (!(res
.flags
& EXCHGID4_FLAG_CONFIRMED_R
))
6844 clp
->cl_seqid
= res
.seqid
;
6846 kfree(clp
->cl_serverowner
);
6847 clp
->cl_serverowner
= res
.server_owner
;
6848 res
.server_owner
= NULL
;
6850 /* use the most recent implementation id */
6851 kfree(clp
->cl_implid
);
6852 clp
->cl_implid
= res
.impl_id
;
6854 if (clp
->cl_serverscope
!= NULL
&&
6855 !nfs41_same_server_scope(clp
->cl_serverscope
,
6856 res
.server_scope
)) {
6857 dprintk("%s: server_scope mismatch detected\n",
6859 set_bit(NFS4CLNT_SERVER_SCOPE_MISMATCH
, &clp
->cl_state
);
6860 kfree(clp
->cl_serverscope
);
6861 clp
->cl_serverscope
= NULL
;
6864 if (clp
->cl_serverscope
== NULL
) {
6865 clp
->cl_serverscope
= res
.server_scope
;
6872 kfree(res
.server_owner
);
6874 kfree(res
.server_scope
);
6876 if (clp
->cl_implid
!= NULL
)
6877 dprintk("NFS reply exchange_id: Server Implementation ID: "
6878 "domain: %s, name: %s, date: %llu,%u\n",
6879 clp
->cl_implid
->domain
, clp
->cl_implid
->name
,
6880 clp
->cl_implid
->date
.seconds
,
6881 clp
->cl_implid
->date
.nseconds
);
6882 dprintk("NFS reply exchange_id: %d\n", status
);
6887 * nfs4_proc_exchange_id()
6889 * Returns zero, a negative errno, or a negative NFS4ERR status code.
6891 * Since the clientid has expired, all compounds using sessions
6892 * associated with the stale clientid will be returning
6893 * NFS4ERR_BADSESSION in the sequence operation, and will therefore
6894 * be in some phase of session reset.
6896 * Will attempt to negotiate SP4_MACH_CRED if krb5i / krb5p auth is used.
6898 int nfs4_proc_exchange_id(struct nfs_client
*clp
, struct rpc_cred
*cred
)
6900 rpc_authflavor_t authflavor
= clp
->cl_rpcclient
->cl_auth
->au_flavor
;
6903 /* try SP4_MACH_CRED if krb5i/p */
6904 if (authflavor
== RPC_AUTH_GSS_KRB5I
||
6905 authflavor
== RPC_AUTH_GSS_KRB5P
) {
6906 status
= _nfs4_proc_exchange_id(clp
, cred
, SP4_MACH_CRED
);
6912 return _nfs4_proc_exchange_id(clp
, cred
, SP4_NONE
);
6915 static int _nfs4_proc_destroy_clientid(struct nfs_client
*clp
,
6916 struct rpc_cred
*cred
)
6918 struct rpc_message msg
= {
6919 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_DESTROY_CLIENTID
],
6925 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
6926 trace_nfs4_destroy_clientid(clp
, status
);
6928 dprintk("NFS: Got error %d from the server %s on "
6929 "DESTROY_CLIENTID.", status
, clp
->cl_hostname
);
6933 static int nfs4_proc_destroy_clientid(struct nfs_client
*clp
,
6934 struct rpc_cred
*cred
)
6939 for (loop
= NFS4_MAX_LOOP_ON_RECOVER
; loop
!= 0; loop
--) {
6940 ret
= _nfs4_proc_destroy_clientid(clp
, cred
);
6942 case -NFS4ERR_DELAY
:
6943 case -NFS4ERR_CLIENTID_BUSY
:
6953 int nfs4_destroy_clientid(struct nfs_client
*clp
)
6955 struct rpc_cred
*cred
;
6958 if (clp
->cl_mvops
->minor_version
< 1)
6960 if (clp
->cl_exchange_flags
== 0)
6962 if (clp
->cl_preserve_clid
)
6964 cred
= nfs4_get_clid_cred(clp
);
6965 ret
= nfs4_proc_destroy_clientid(clp
, cred
);
6970 case -NFS4ERR_STALE_CLIENTID
:
6971 clp
->cl_exchange_flags
= 0;
6977 struct nfs4_get_lease_time_data
{
6978 struct nfs4_get_lease_time_args
*args
;
6979 struct nfs4_get_lease_time_res
*res
;
6980 struct nfs_client
*clp
;
6983 static void nfs4_get_lease_time_prepare(struct rpc_task
*task
,
6986 struct nfs4_get_lease_time_data
*data
=
6987 (struct nfs4_get_lease_time_data
*)calldata
;
6989 dprintk("--> %s\n", __func__
);
6990 /* just setup sequence, do not trigger session recovery
6991 since we're invoked within one */
6992 nfs41_setup_sequence(data
->clp
->cl_session
,
6993 &data
->args
->la_seq_args
,
6994 &data
->res
->lr_seq_res
,
6996 dprintk("<-- %s\n", __func__
);
7000 * Called from nfs4_state_manager thread for session setup, so don't recover
7001 * from sequence operation or clientid errors.
7003 static void nfs4_get_lease_time_done(struct rpc_task
*task
, void *calldata
)
7005 struct nfs4_get_lease_time_data
*data
=
7006 (struct nfs4_get_lease_time_data
*)calldata
;
7008 dprintk("--> %s\n", __func__
);
7009 if (!nfs41_sequence_done(task
, &data
->res
->lr_seq_res
))
7011 switch (task
->tk_status
) {
7012 case -NFS4ERR_DELAY
:
7013 case -NFS4ERR_GRACE
:
7014 dprintk("%s Retry: tk_status %d\n", __func__
, task
->tk_status
);
7015 rpc_delay(task
, NFS4_POLL_RETRY_MIN
);
7016 task
->tk_status
= 0;
7018 case -NFS4ERR_RETRY_UNCACHED_REP
:
7019 rpc_restart_call_prepare(task
);
7022 dprintk("<-- %s\n", __func__
);
7025 static const struct rpc_call_ops nfs4_get_lease_time_ops
= {
7026 .rpc_call_prepare
= nfs4_get_lease_time_prepare
,
7027 .rpc_call_done
= nfs4_get_lease_time_done
,
7030 int nfs4_proc_get_lease_time(struct nfs_client
*clp
, struct nfs_fsinfo
*fsinfo
)
7032 struct rpc_task
*task
;
7033 struct nfs4_get_lease_time_args args
;
7034 struct nfs4_get_lease_time_res res
= {
7035 .lr_fsinfo
= fsinfo
,
7037 struct nfs4_get_lease_time_data data
= {
7042 struct rpc_message msg
= {
7043 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GET_LEASE_TIME
],
7047 struct rpc_task_setup task_setup
= {
7048 .rpc_client
= clp
->cl_rpcclient
,
7049 .rpc_message
= &msg
,
7050 .callback_ops
= &nfs4_get_lease_time_ops
,
7051 .callback_data
= &data
,
7052 .flags
= RPC_TASK_TIMEOUT
,
7056 nfs4_init_sequence(&args
.la_seq_args
, &res
.lr_seq_res
, 0);
7057 nfs4_set_sequence_privileged(&args
.la_seq_args
);
7058 dprintk("--> %s\n", __func__
);
7059 task
= rpc_run_task(&task_setup
);
7062 status
= PTR_ERR(task
);
7064 status
= task
->tk_status
;
7067 dprintk("<-- %s return %d\n", __func__
, status
);
7073 * Initialize the values to be used by the client in CREATE_SESSION
7074 * If nfs4_init_session set the fore channel request and response sizes,
7077 * Set the back channel max_resp_sz_cached to zero to force the client to
7078 * always set csa_cachethis to FALSE because the current implementation
7079 * of the back channel DRC only supports caching the CB_SEQUENCE operation.
7081 static void nfs4_init_channel_attrs(struct nfs41_create_session_args
*args
)
7083 unsigned int max_rqst_sz
, max_resp_sz
;
7085 max_rqst_sz
= NFS_MAX_FILE_IO_SIZE
+ nfs41_maxwrite_overhead
;
7086 max_resp_sz
= NFS_MAX_FILE_IO_SIZE
+ nfs41_maxread_overhead
;
7088 /* Fore channel attributes */
7089 args
->fc_attrs
.max_rqst_sz
= max_rqst_sz
;
7090 args
->fc_attrs
.max_resp_sz
= max_resp_sz
;
7091 args
->fc_attrs
.max_ops
= NFS4_MAX_OPS
;
7092 args
->fc_attrs
.max_reqs
= max_session_slots
;
7094 dprintk("%s: Fore Channel : max_rqst_sz=%u max_resp_sz=%u "
7095 "max_ops=%u max_reqs=%u\n",
7097 args
->fc_attrs
.max_rqst_sz
, args
->fc_attrs
.max_resp_sz
,
7098 args
->fc_attrs
.max_ops
, args
->fc_attrs
.max_reqs
);
7100 /* Back channel attributes */
7101 args
->bc_attrs
.max_rqst_sz
= PAGE_SIZE
;
7102 args
->bc_attrs
.max_resp_sz
= PAGE_SIZE
;
7103 args
->bc_attrs
.max_resp_sz_cached
= 0;
7104 args
->bc_attrs
.max_ops
= NFS4_MAX_BACK_CHANNEL_OPS
;
7105 args
->bc_attrs
.max_reqs
= 1;
7107 dprintk("%s: Back Channel : max_rqst_sz=%u max_resp_sz=%u "
7108 "max_resp_sz_cached=%u max_ops=%u max_reqs=%u\n",
7110 args
->bc_attrs
.max_rqst_sz
, args
->bc_attrs
.max_resp_sz
,
7111 args
->bc_attrs
.max_resp_sz_cached
, args
->bc_attrs
.max_ops
,
7112 args
->bc_attrs
.max_reqs
);
7115 static int nfs4_verify_fore_channel_attrs(struct nfs41_create_session_args
*args
, struct nfs4_session
*session
)
7117 struct nfs4_channel_attrs
*sent
= &args
->fc_attrs
;
7118 struct nfs4_channel_attrs
*rcvd
= &session
->fc_attrs
;
7120 if (rcvd
->max_resp_sz
> sent
->max_resp_sz
)
7123 * Our requested max_ops is the minimum we need; we're not
7124 * prepared to break up compounds into smaller pieces than that.
7125 * So, no point even trying to continue if the server won't
7128 if (rcvd
->max_ops
< sent
->max_ops
)
7130 if (rcvd
->max_reqs
== 0)
7132 if (rcvd
->max_reqs
> NFS4_MAX_SLOT_TABLE
)
7133 rcvd
->max_reqs
= NFS4_MAX_SLOT_TABLE
;
7137 static int nfs4_verify_back_channel_attrs(struct nfs41_create_session_args
*args
, struct nfs4_session
*session
)
7139 struct nfs4_channel_attrs
*sent
= &args
->bc_attrs
;
7140 struct nfs4_channel_attrs
*rcvd
= &session
->bc_attrs
;
7142 if (rcvd
->max_rqst_sz
> sent
->max_rqst_sz
)
7144 if (rcvd
->max_resp_sz
< sent
->max_resp_sz
)
7146 if (rcvd
->max_resp_sz_cached
> sent
->max_resp_sz_cached
)
7148 /* These would render the backchannel useless: */
7149 if (rcvd
->max_ops
!= sent
->max_ops
)
7151 if (rcvd
->max_reqs
!= sent
->max_reqs
)
7156 static int nfs4_verify_channel_attrs(struct nfs41_create_session_args
*args
,
7157 struct nfs4_session
*session
)
7161 ret
= nfs4_verify_fore_channel_attrs(args
, session
);
7164 return nfs4_verify_back_channel_attrs(args
, session
);
7167 static int _nfs4_proc_create_session(struct nfs_client
*clp
,
7168 struct rpc_cred
*cred
)
7170 struct nfs4_session
*session
= clp
->cl_session
;
7171 struct nfs41_create_session_args args
= {
7173 .cb_program
= NFS4_CALLBACK
,
7175 struct nfs41_create_session_res res
= {
7178 struct rpc_message msg
= {
7179 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_CREATE_SESSION
],
7186 nfs4_init_channel_attrs(&args
);
7187 args
.flags
= (SESSION4_PERSIST
| SESSION4_BACK_CHAN
);
7189 status
= rpc_call_sync(session
->clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
7190 trace_nfs4_create_session(clp
, status
);
7193 /* Verify the session's negotiated channel_attrs values */
7194 status
= nfs4_verify_channel_attrs(&args
, session
);
7195 /* Increment the clientid slot sequence id */
7203 * Issues a CREATE_SESSION operation to the server.
7204 * It is the responsibility of the caller to verify the session is
7205 * expired before calling this routine.
7207 int nfs4_proc_create_session(struct nfs_client
*clp
, struct rpc_cred
*cred
)
7211 struct nfs4_session
*session
= clp
->cl_session
;
7213 dprintk("--> %s clp=%p session=%p\n", __func__
, clp
, session
);
7215 status
= _nfs4_proc_create_session(clp
, cred
);
7219 /* Init or reset the session slot tables */
7220 status
= nfs4_setup_session_slot_tables(session
);
7221 dprintk("slot table setup returned %d\n", status
);
7225 ptr
= (unsigned *)&session
->sess_id
.data
[0];
7226 dprintk("%s client>seqid %d sessionid %u:%u:%u:%u\n", __func__
,
7227 clp
->cl_seqid
, ptr
[0], ptr
[1], ptr
[2], ptr
[3]);
7229 dprintk("<-- %s\n", __func__
);
7234 * Issue the over-the-wire RPC DESTROY_SESSION.
7235 * The caller must serialize access to this routine.
7237 int nfs4_proc_destroy_session(struct nfs4_session
*session
,
7238 struct rpc_cred
*cred
)
7240 struct rpc_message msg
= {
7241 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_DESTROY_SESSION
],
7242 .rpc_argp
= session
,
7247 dprintk("--> nfs4_proc_destroy_session\n");
7249 /* session is still being setup */
7250 if (session
->clp
->cl_cons_state
!= NFS_CS_READY
)
7253 status
= rpc_call_sync(session
->clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
7254 trace_nfs4_destroy_session(session
->clp
, status
);
7257 dprintk("NFS: Got error %d from the server on DESTROY_SESSION. "
7258 "Session has been destroyed regardless...\n", status
);
7260 dprintk("<-- nfs4_proc_destroy_session\n");
7265 * Renew the cl_session lease.
7267 struct nfs4_sequence_data
{
7268 struct nfs_client
*clp
;
7269 struct nfs4_sequence_args args
;
7270 struct nfs4_sequence_res res
;
7273 static void nfs41_sequence_release(void *data
)
7275 struct nfs4_sequence_data
*calldata
= data
;
7276 struct nfs_client
*clp
= calldata
->clp
;
7278 if (atomic_read(&clp
->cl_count
) > 1)
7279 nfs4_schedule_state_renewal(clp
);
7280 nfs_put_client(clp
);
7284 static int nfs41_sequence_handle_errors(struct rpc_task
*task
, struct nfs_client
*clp
)
7286 switch(task
->tk_status
) {
7287 case -NFS4ERR_DELAY
:
7288 rpc_delay(task
, NFS4_POLL_RETRY_MAX
);
7291 nfs4_schedule_lease_recovery(clp
);
7296 static void nfs41_sequence_call_done(struct rpc_task
*task
, void *data
)
7298 struct nfs4_sequence_data
*calldata
= data
;
7299 struct nfs_client
*clp
= calldata
->clp
;
7301 if (!nfs41_sequence_done(task
, task
->tk_msg
.rpc_resp
))
7304 trace_nfs4_sequence(clp
, task
->tk_status
);
7305 if (task
->tk_status
< 0) {
7306 dprintk("%s ERROR %d\n", __func__
, task
->tk_status
);
7307 if (atomic_read(&clp
->cl_count
) == 1)
7310 if (nfs41_sequence_handle_errors(task
, clp
) == -EAGAIN
) {
7311 rpc_restart_call_prepare(task
);
7315 dprintk("%s rpc_cred %p\n", __func__
, task
->tk_msg
.rpc_cred
);
7317 dprintk("<-- %s\n", __func__
);
7320 static void nfs41_sequence_prepare(struct rpc_task
*task
, void *data
)
7322 struct nfs4_sequence_data
*calldata
= data
;
7323 struct nfs_client
*clp
= calldata
->clp
;
7324 struct nfs4_sequence_args
*args
;
7325 struct nfs4_sequence_res
*res
;
7327 args
= task
->tk_msg
.rpc_argp
;
7328 res
= task
->tk_msg
.rpc_resp
;
7330 nfs41_setup_sequence(clp
->cl_session
, args
, res
, task
);
7333 static const struct rpc_call_ops nfs41_sequence_ops
= {
7334 .rpc_call_done
= nfs41_sequence_call_done
,
7335 .rpc_call_prepare
= nfs41_sequence_prepare
,
7336 .rpc_release
= nfs41_sequence_release
,
7339 static struct rpc_task
*_nfs41_proc_sequence(struct nfs_client
*clp
,
7340 struct rpc_cred
*cred
,
7343 struct nfs4_sequence_data
*calldata
;
7344 struct rpc_message msg
= {
7345 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SEQUENCE
],
7348 struct rpc_task_setup task_setup_data
= {
7349 .rpc_client
= clp
->cl_rpcclient
,
7350 .rpc_message
= &msg
,
7351 .callback_ops
= &nfs41_sequence_ops
,
7352 .flags
= RPC_TASK_ASYNC
| RPC_TASK_TIMEOUT
,
7355 if (!atomic_inc_not_zero(&clp
->cl_count
))
7356 return ERR_PTR(-EIO
);
7357 calldata
= kzalloc(sizeof(*calldata
), GFP_NOFS
);
7358 if (calldata
== NULL
) {
7359 nfs_put_client(clp
);
7360 return ERR_PTR(-ENOMEM
);
7362 nfs4_init_sequence(&calldata
->args
, &calldata
->res
, 0);
7364 nfs4_set_sequence_privileged(&calldata
->args
);
7365 msg
.rpc_argp
= &calldata
->args
;
7366 msg
.rpc_resp
= &calldata
->res
;
7367 calldata
->clp
= clp
;
7368 task_setup_data
.callback_data
= calldata
;
7370 return rpc_run_task(&task_setup_data
);
7373 static int nfs41_proc_async_sequence(struct nfs_client
*clp
, struct rpc_cred
*cred
, unsigned renew_flags
)
7375 struct rpc_task
*task
;
7378 if ((renew_flags
& NFS4_RENEW_TIMEOUT
) == 0)
7380 task
= _nfs41_proc_sequence(clp
, cred
, false);
7382 ret
= PTR_ERR(task
);
7384 rpc_put_task_async(task
);
7385 dprintk("<-- %s status=%d\n", __func__
, ret
);
7389 static int nfs4_proc_sequence(struct nfs_client
*clp
, struct rpc_cred
*cred
)
7391 struct rpc_task
*task
;
7394 task
= _nfs41_proc_sequence(clp
, cred
, true);
7396 ret
= PTR_ERR(task
);
7399 ret
= rpc_wait_for_completion_task(task
);
7401 struct nfs4_sequence_res
*res
= task
->tk_msg
.rpc_resp
;
7403 if (task
->tk_status
== 0)
7404 nfs41_handle_sequence_flag_errors(clp
, res
->sr_status_flags
);
7405 ret
= task
->tk_status
;
7409 dprintk("<-- %s status=%d\n", __func__
, ret
);
7413 struct nfs4_reclaim_complete_data
{
7414 struct nfs_client
*clp
;
7415 struct nfs41_reclaim_complete_args arg
;
7416 struct nfs41_reclaim_complete_res res
;
7419 static void nfs4_reclaim_complete_prepare(struct rpc_task
*task
, void *data
)
7421 struct nfs4_reclaim_complete_data
*calldata
= data
;
7423 nfs41_setup_sequence(calldata
->clp
->cl_session
,
7424 &calldata
->arg
.seq_args
,
7425 &calldata
->res
.seq_res
,
7429 static int nfs41_reclaim_complete_handle_errors(struct rpc_task
*task
, struct nfs_client
*clp
)
7431 switch(task
->tk_status
) {
7433 case -NFS4ERR_COMPLETE_ALREADY
:
7434 case -NFS4ERR_WRONG_CRED
: /* What to do here? */
7436 case -NFS4ERR_DELAY
:
7437 rpc_delay(task
, NFS4_POLL_RETRY_MAX
);
7439 case -NFS4ERR_RETRY_UNCACHED_REP
:
7442 nfs4_schedule_lease_recovery(clp
);
7447 static void nfs4_reclaim_complete_done(struct rpc_task
*task
, void *data
)
7449 struct nfs4_reclaim_complete_data
*calldata
= data
;
7450 struct nfs_client
*clp
= calldata
->clp
;
7451 struct nfs4_sequence_res
*res
= &calldata
->res
.seq_res
;
7453 dprintk("--> %s\n", __func__
);
7454 if (!nfs41_sequence_done(task
, res
))
7457 trace_nfs4_reclaim_complete(clp
, task
->tk_status
);
7458 if (nfs41_reclaim_complete_handle_errors(task
, clp
) == -EAGAIN
) {
7459 rpc_restart_call_prepare(task
);
7462 dprintk("<-- %s\n", __func__
);
7465 static void nfs4_free_reclaim_complete_data(void *data
)
7467 struct nfs4_reclaim_complete_data
*calldata
= data
;
7472 static const struct rpc_call_ops nfs4_reclaim_complete_call_ops
= {
7473 .rpc_call_prepare
= nfs4_reclaim_complete_prepare
,
7474 .rpc_call_done
= nfs4_reclaim_complete_done
,
7475 .rpc_release
= nfs4_free_reclaim_complete_data
,
7479 * Issue a global reclaim complete.
7481 static int nfs41_proc_reclaim_complete(struct nfs_client
*clp
,
7482 struct rpc_cred
*cred
)
7484 struct nfs4_reclaim_complete_data
*calldata
;
7485 struct rpc_task
*task
;
7486 struct rpc_message msg
= {
7487 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RECLAIM_COMPLETE
],
7490 struct rpc_task_setup task_setup_data
= {
7491 .rpc_client
= clp
->cl_rpcclient
,
7492 .rpc_message
= &msg
,
7493 .callback_ops
= &nfs4_reclaim_complete_call_ops
,
7494 .flags
= RPC_TASK_ASYNC
,
7496 int status
= -ENOMEM
;
7498 dprintk("--> %s\n", __func__
);
7499 calldata
= kzalloc(sizeof(*calldata
), GFP_NOFS
);
7500 if (calldata
== NULL
)
7502 calldata
->clp
= clp
;
7503 calldata
->arg
.one_fs
= 0;
7505 nfs4_init_sequence(&calldata
->arg
.seq_args
, &calldata
->res
.seq_res
, 0);
7506 nfs4_set_sequence_privileged(&calldata
->arg
.seq_args
);
7507 msg
.rpc_argp
= &calldata
->arg
;
7508 msg
.rpc_resp
= &calldata
->res
;
7509 task_setup_data
.callback_data
= calldata
;
7510 task
= rpc_run_task(&task_setup_data
);
7512 status
= PTR_ERR(task
);
7515 status
= nfs4_wait_for_completion_rpc_task(task
);
7517 status
= task
->tk_status
;
7521 dprintk("<-- %s status=%d\n", __func__
, status
);
7526 nfs4_layoutget_prepare(struct rpc_task
*task
, void *calldata
)
7528 struct nfs4_layoutget
*lgp
= calldata
;
7529 struct nfs_server
*server
= NFS_SERVER(lgp
->args
.inode
);
7530 struct nfs4_session
*session
= nfs4_get_session(server
);
7532 dprintk("--> %s\n", __func__
);
7533 /* Note the is a race here, where a CB_LAYOUTRECALL can come in
7534 * right now covering the LAYOUTGET we are about to send.
7535 * However, that is not so catastrophic, and there seems
7536 * to be no way to prevent it completely.
7538 if (nfs41_setup_sequence(session
, &lgp
->args
.seq_args
,
7539 &lgp
->res
.seq_res
, task
))
7541 if (pnfs_choose_layoutget_stateid(&lgp
->args
.stateid
,
7542 NFS_I(lgp
->args
.inode
)->layout
,
7544 lgp
->args
.ctx
->state
)) {
7545 rpc_exit(task
, NFS4_OK
);
7549 static void nfs4_layoutget_done(struct rpc_task
*task
, void *calldata
)
7551 struct nfs4_layoutget
*lgp
= calldata
;
7552 struct inode
*inode
= lgp
->args
.inode
;
7553 struct nfs_server
*server
= NFS_SERVER(inode
);
7554 struct pnfs_layout_hdr
*lo
;
7555 struct nfs4_state
*state
= NULL
;
7556 unsigned long timeo
, now
, giveup
;
7558 dprintk("--> %s tk_status => %d\n", __func__
, -task
->tk_status
);
7560 if (!nfs41_sequence_done(task
, &lgp
->res
.seq_res
))
7563 switch (task
->tk_status
) {
7567 * NFS4ERR_LAYOUTTRYLATER is a conflict with another client
7568 * (or clients) writing to the same RAID stripe
7570 case -NFS4ERR_LAYOUTTRYLATER
:
7572 * NFS4ERR_RECALLCONFLICT is when conflict with self (must recall
7573 * existing layout before getting a new one).
7575 case -NFS4ERR_RECALLCONFLICT
:
7576 timeo
= rpc_get_timeout(task
->tk_client
);
7577 giveup
= lgp
->args
.timestamp
+ timeo
;
7579 if (time_after(giveup
, now
)) {
7580 unsigned long delay
;
7583 * - Not less then NFS4_POLL_RETRY_MIN.
7584 * - One last time a jiffie before we give up
7585 * - exponential backoff (time_now minus start_attempt)
7587 delay
= max_t(unsigned long, NFS4_POLL_RETRY_MIN
,
7588 min((giveup
- now
- 1),
7589 now
- lgp
->args
.timestamp
));
7591 dprintk("%s: NFS4ERR_RECALLCONFLICT waiting %lu\n",
7593 rpc_delay(task
, delay
);
7594 task
->tk_status
= 0;
7595 rpc_restart_call_prepare(task
);
7596 goto out
; /* Do not call nfs4_async_handle_error() */
7599 case -NFS4ERR_EXPIRED
:
7600 case -NFS4ERR_BAD_STATEID
:
7601 spin_lock(&inode
->i_lock
);
7602 lo
= NFS_I(inode
)->layout
;
7603 if (!lo
|| list_empty(&lo
->plh_segs
)) {
7604 spin_unlock(&inode
->i_lock
);
7605 /* If the open stateid was bad, then recover it. */
7606 state
= lgp
->args
.ctx
->state
;
7611 * Mark the bad layout state as invalid, then retry
7612 * with the current stateid.
7614 pnfs_mark_matching_lsegs_invalid(lo
, &head
, NULL
);
7615 spin_unlock(&inode
->i_lock
);
7616 pnfs_free_lseg_list(&head
);
7618 task
->tk_status
= 0;
7619 rpc_restart_call_prepare(task
);
7622 if (nfs4_async_handle_error(task
, server
, state
, NULL
) == -EAGAIN
)
7623 rpc_restart_call_prepare(task
);
7625 dprintk("<-- %s\n", __func__
);
7628 static size_t max_response_pages(struct nfs_server
*server
)
7630 u32 max_resp_sz
= server
->nfs_client
->cl_session
->fc_attrs
.max_resp_sz
;
7631 return nfs_page_array_len(0, max_resp_sz
);
7634 static void nfs4_free_pages(struct page
**pages
, size_t size
)
7641 for (i
= 0; i
< size
; i
++) {
7644 __free_page(pages
[i
]);
7649 static struct page
**nfs4_alloc_pages(size_t size
, gfp_t gfp_flags
)
7651 struct page
**pages
;
7654 pages
= kcalloc(size
, sizeof(struct page
*), gfp_flags
);
7656 dprintk("%s: can't alloc array of %zu pages\n", __func__
, size
);
7660 for (i
= 0; i
< size
; i
++) {
7661 pages
[i
] = alloc_page(gfp_flags
);
7663 dprintk("%s: failed to allocate page\n", __func__
);
7664 nfs4_free_pages(pages
, size
);
7672 static void nfs4_layoutget_release(void *calldata
)
7674 struct nfs4_layoutget
*lgp
= calldata
;
7675 struct inode
*inode
= lgp
->args
.inode
;
7676 struct nfs_server
*server
= NFS_SERVER(inode
);
7677 size_t max_pages
= max_response_pages(server
);
7679 dprintk("--> %s\n", __func__
);
7680 nfs4_free_pages(lgp
->args
.layout
.pages
, max_pages
);
7681 pnfs_put_layout_hdr(NFS_I(inode
)->layout
);
7682 put_nfs_open_context(lgp
->args
.ctx
);
7684 dprintk("<-- %s\n", __func__
);
7687 static const struct rpc_call_ops nfs4_layoutget_call_ops
= {
7688 .rpc_call_prepare
= nfs4_layoutget_prepare
,
7689 .rpc_call_done
= nfs4_layoutget_done
,
7690 .rpc_release
= nfs4_layoutget_release
,
7693 struct pnfs_layout_segment
*
7694 nfs4_proc_layoutget(struct nfs4_layoutget
*lgp
, gfp_t gfp_flags
)
7696 struct inode
*inode
= lgp
->args
.inode
;
7697 struct nfs_server
*server
= NFS_SERVER(inode
);
7698 size_t max_pages
= max_response_pages(server
);
7699 struct rpc_task
*task
;
7700 struct rpc_message msg
= {
7701 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LAYOUTGET
],
7702 .rpc_argp
= &lgp
->args
,
7703 .rpc_resp
= &lgp
->res
,
7704 .rpc_cred
= lgp
->cred
,
7706 struct rpc_task_setup task_setup_data
= {
7707 .rpc_client
= server
->client
,
7708 .rpc_message
= &msg
,
7709 .callback_ops
= &nfs4_layoutget_call_ops
,
7710 .callback_data
= lgp
,
7711 .flags
= RPC_TASK_ASYNC
,
7713 struct pnfs_layout_segment
*lseg
= NULL
;
7716 dprintk("--> %s\n", __func__
);
7718 /* nfs4_layoutget_release calls pnfs_put_layout_hdr */
7719 pnfs_get_layout_hdr(NFS_I(inode
)->layout
);
7721 lgp
->args
.layout
.pages
= nfs4_alloc_pages(max_pages
, gfp_flags
);
7722 if (!lgp
->args
.layout
.pages
) {
7723 nfs4_layoutget_release(lgp
);
7724 return ERR_PTR(-ENOMEM
);
7726 lgp
->args
.layout
.pglen
= max_pages
* PAGE_SIZE
;
7727 lgp
->args
.timestamp
= jiffies
;
7729 lgp
->res
.layoutp
= &lgp
->args
.layout
;
7730 lgp
->res
.seq_res
.sr_slot
= NULL
;
7731 nfs4_init_sequence(&lgp
->args
.seq_args
, &lgp
->res
.seq_res
, 0);
7733 task
= rpc_run_task(&task_setup_data
);
7735 return ERR_CAST(task
);
7736 status
= nfs4_wait_for_completion_rpc_task(task
);
7738 status
= task
->tk_status
;
7739 trace_nfs4_layoutget(lgp
->args
.ctx
,
7743 /* if layoutp->len is 0, nfs4_layoutget_prepare called rpc_exit */
7744 if (status
== 0 && lgp
->res
.layoutp
->len
)
7745 lseg
= pnfs_layout_process(lgp
);
7747 dprintk("<-- %s status=%d\n", __func__
, status
);
7749 return ERR_PTR(status
);
7754 nfs4_layoutreturn_prepare(struct rpc_task
*task
, void *calldata
)
7756 struct nfs4_layoutreturn
*lrp
= calldata
;
7758 dprintk("--> %s\n", __func__
);
7759 nfs41_setup_sequence(lrp
->clp
->cl_session
,
7760 &lrp
->args
.seq_args
,
7765 static void nfs4_layoutreturn_done(struct rpc_task
*task
, void *calldata
)
7767 struct nfs4_layoutreturn
*lrp
= calldata
;
7768 struct nfs_server
*server
;
7770 dprintk("--> %s\n", __func__
);
7772 if (!nfs41_sequence_done(task
, &lrp
->res
.seq_res
))
7775 server
= NFS_SERVER(lrp
->args
.inode
);
7776 switch (task
->tk_status
) {
7778 task
->tk_status
= 0;
7781 case -NFS4ERR_DELAY
:
7782 if (nfs4_async_handle_error(task
, server
, NULL
, NULL
) != -EAGAIN
)
7784 rpc_restart_call_prepare(task
);
7787 dprintk("<-- %s\n", __func__
);
7790 static void nfs4_layoutreturn_release(void *calldata
)
7792 struct nfs4_layoutreturn
*lrp
= calldata
;
7793 struct pnfs_layout_hdr
*lo
= lrp
->args
.layout
;
7795 dprintk("--> %s\n", __func__
);
7796 spin_lock(&lo
->plh_inode
->i_lock
);
7797 if (lrp
->res
.lrs_present
)
7798 pnfs_set_layout_stateid(lo
, &lrp
->res
.stateid
, true);
7799 clear_bit(NFS_LAYOUT_RETURN
, &lo
->plh_flags
);
7800 clear_bit(NFS_LAYOUT_RETURN_BEFORE_CLOSE
, &lo
->plh_flags
);
7801 rpc_wake_up(&NFS_SERVER(lo
->plh_inode
)->roc_rpcwaitq
);
7802 lo
->plh_block_lgets
--;
7803 spin_unlock(&lo
->plh_inode
->i_lock
);
7804 pnfs_put_layout_hdr(lrp
->args
.layout
);
7806 dprintk("<-- %s\n", __func__
);
7809 static const struct rpc_call_ops nfs4_layoutreturn_call_ops
= {
7810 .rpc_call_prepare
= nfs4_layoutreturn_prepare
,
7811 .rpc_call_done
= nfs4_layoutreturn_done
,
7812 .rpc_release
= nfs4_layoutreturn_release
,
7815 int nfs4_proc_layoutreturn(struct nfs4_layoutreturn
*lrp
, bool sync
)
7817 struct rpc_task
*task
;
7818 struct rpc_message msg
= {
7819 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LAYOUTRETURN
],
7820 .rpc_argp
= &lrp
->args
,
7821 .rpc_resp
= &lrp
->res
,
7822 .rpc_cred
= lrp
->cred
,
7824 struct rpc_task_setup task_setup_data
= {
7825 .rpc_client
= NFS_SERVER(lrp
->args
.inode
)->client
,
7826 .rpc_message
= &msg
,
7827 .callback_ops
= &nfs4_layoutreturn_call_ops
,
7828 .callback_data
= lrp
,
7829 .flags
= RPC_TASK_ASYNC
,
7833 dprintk("--> %s\n", __func__
);
7834 nfs4_init_sequence(&lrp
->args
.seq_args
, &lrp
->res
.seq_res
, 1);
7835 task
= rpc_run_task(&task_setup_data
);
7837 return PTR_ERR(task
);
7840 status
= nfs4_wait_for_completion_rpc_task(task
);
7843 status
= task
->tk_status
;
7844 trace_nfs4_layoutreturn(lrp
->args
.inode
, status
);
7846 dprintk("<-- %s status=%d\n", __func__
, status
);
7852 _nfs4_proc_getdeviceinfo(struct nfs_server
*server
,
7853 struct pnfs_device
*pdev
,
7854 struct rpc_cred
*cred
)
7856 struct nfs4_getdeviceinfo_args args
= {
7859 struct nfs4_getdeviceinfo_res res
= {
7862 struct rpc_message msg
= {
7863 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GETDEVICEINFO
],
7870 dprintk("--> %s\n", __func__
);
7871 status
= nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
7872 dprintk("<-- %s status=%d\n", __func__
, status
);
7877 int nfs4_proc_getdeviceinfo(struct nfs_server
*server
,
7878 struct pnfs_device
*pdev
,
7879 struct rpc_cred
*cred
)
7881 struct nfs4_exception exception
= { };
7885 err
= nfs4_handle_exception(server
,
7886 _nfs4_proc_getdeviceinfo(server
, pdev
, cred
),
7888 } while (exception
.retry
);
7891 EXPORT_SYMBOL_GPL(nfs4_proc_getdeviceinfo
);
7893 static void nfs4_layoutcommit_prepare(struct rpc_task
*task
, void *calldata
)
7895 struct nfs4_layoutcommit_data
*data
= calldata
;
7896 struct nfs_server
*server
= NFS_SERVER(data
->args
.inode
);
7897 struct nfs4_session
*session
= nfs4_get_session(server
);
7899 nfs41_setup_sequence(session
,
7900 &data
->args
.seq_args
,
7906 nfs4_layoutcommit_done(struct rpc_task
*task
, void *calldata
)
7908 struct nfs4_layoutcommit_data
*data
= calldata
;
7909 struct nfs_server
*server
= NFS_SERVER(data
->args
.inode
);
7911 if (!nfs41_sequence_done(task
, &data
->res
.seq_res
))
7914 switch (task
->tk_status
) { /* Just ignore these failures */
7915 case -NFS4ERR_DELEG_REVOKED
: /* layout was recalled */
7916 case -NFS4ERR_BADIOMODE
: /* no IOMODE_RW layout for range */
7917 case -NFS4ERR_BADLAYOUT
: /* no layout */
7918 case -NFS4ERR_GRACE
: /* loca_recalim always false */
7919 task
->tk_status
= 0;
7923 if (nfs4_async_handle_error(task
, server
, NULL
, NULL
) == -EAGAIN
) {
7924 rpc_restart_call_prepare(task
);
7930 static void nfs4_layoutcommit_release(void *calldata
)
7932 struct nfs4_layoutcommit_data
*data
= calldata
;
7934 pnfs_cleanup_layoutcommit(data
);
7935 nfs_post_op_update_inode_force_wcc(data
->args
.inode
,
7937 put_rpccred(data
->cred
);
7941 static const struct rpc_call_ops nfs4_layoutcommit_ops
= {
7942 .rpc_call_prepare
= nfs4_layoutcommit_prepare
,
7943 .rpc_call_done
= nfs4_layoutcommit_done
,
7944 .rpc_release
= nfs4_layoutcommit_release
,
7948 nfs4_proc_layoutcommit(struct nfs4_layoutcommit_data
*data
, bool sync
)
7950 struct rpc_message msg
= {
7951 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LAYOUTCOMMIT
],
7952 .rpc_argp
= &data
->args
,
7953 .rpc_resp
= &data
->res
,
7954 .rpc_cred
= data
->cred
,
7956 struct rpc_task_setup task_setup_data
= {
7957 .task
= &data
->task
,
7958 .rpc_client
= NFS_CLIENT(data
->args
.inode
),
7959 .rpc_message
= &msg
,
7960 .callback_ops
= &nfs4_layoutcommit_ops
,
7961 .callback_data
= data
,
7962 .flags
= RPC_TASK_ASYNC
,
7964 struct rpc_task
*task
;
7967 dprintk("NFS: %4d initiating layoutcommit call. sync %d "
7968 "lbw: %llu inode %lu\n",
7969 data
->task
.tk_pid
, sync
,
7970 data
->args
.lastbytewritten
,
7971 data
->args
.inode
->i_ino
);
7973 nfs4_init_sequence(&data
->args
.seq_args
, &data
->res
.seq_res
, 1);
7974 task
= rpc_run_task(&task_setup_data
);
7976 return PTR_ERR(task
);
7979 status
= nfs4_wait_for_completion_rpc_task(task
);
7982 status
= task
->tk_status
;
7983 trace_nfs4_layoutcommit(data
->args
.inode
, status
);
7985 dprintk("%s: status %d\n", __func__
, status
);
7991 * Use the state managment nfs_client cl_rpcclient, which uses krb5i (if
7992 * possible) as per RFC3530bis and RFC5661 Security Considerations sections
7995 _nfs41_proc_secinfo_no_name(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
7996 struct nfs_fsinfo
*info
,
7997 struct nfs4_secinfo_flavors
*flavors
, bool use_integrity
)
7999 struct nfs41_secinfo_no_name_args args
= {
8000 .style
= SECINFO_STYLE_CURRENT_FH
,
8002 struct nfs4_secinfo_res res
= {
8005 struct rpc_message msg
= {
8006 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SECINFO_NO_NAME
],
8010 struct rpc_clnt
*clnt
= server
->client
;
8011 struct rpc_cred
*cred
= NULL
;
8014 if (use_integrity
) {
8015 clnt
= server
->nfs_client
->cl_rpcclient
;
8016 cred
= nfs4_get_clid_cred(server
->nfs_client
);
8017 msg
.rpc_cred
= cred
;
8020 dprintk("--> %s\n", __func__
);
8021 status
= nfs4_call_sync(clnt
, server
, &msg
, &args
.seq_args
,
8023 dprintk("<-- %s status=%d\n", __func__
, status
);
8032 nfs41_proc_secinfo_no_name(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
8033 struct nfs_fsinfo
*info
, struct nfs4_secinfo_flavors
*flavors
)
8035 struct nfs4_exception exception
= { };
8038 /* first try using integrity protection */
8039 err
= -NFS4ERR_WRONGSEC
;
8041 /* try to use integrity protection with machine cred */
8042 if (_nfs4_is_integrity_protected(server
->nfs_client
))
8043 err
= _nfs41_proc_secinfo_no_name(server
, fhandle
, info
,
8047 * if unable to use integrity protection, or SECINFO with
8048 * integrity protection returns NFS4ERR_WRONGSEC (which is
8049 * disallowed by spec, but exists in deployed servers) use
8050 * the current filesystem's rpc_client and the user cred.
8052 if (err
== -NFS4ERR_WRONGSEC
)
8053 err
= _nfs41_proc_secinfo_no_name(server
, fhandle
, info
,
8058 case -NFS4ERR_WRONGSEC
:
8062 err
= nfs4_handle_exception(server
, err
, &exception
);
8064 } while (exception
.retry
);
8070 nfs41_find_root_sec(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
8071 struct nfs_fsinfo
*info
)
8075 rpc_authflavor_t flavor
= RPC_AUTH_MAXFLAVOR
;
8076 struct nfs4_secinfo_flavors
*flavors
;
8077 struct nfs4_secinfo4
*secinfo
;
8080 page
= alloc_page(GFP_KERNEL
);
8086 flavors
= page_address(page
);
8087 err
= nfs41_proc_secinfo_no_name(server
, fhandle
, info
, flavors
);
8090 * Fall back on "guess and check" method if
8091 * the server doesn't support SECINFO_NO_NAME
8093 if (err
== -NFS4ERR_WRONGSEC
|| err
== -ENOTSUPP
) {
8094 err
= nfs4_find_root_sec(server
, fhandle
, info
);
8100 for (i
= 0; i
< flavors
->num_flavors
; i
++) {
8101 secinfo
= &flavors
->flavors
[i
];
8103 switch (secinfo
->flavor
) {
8107 flavor
= rpcauth_get_pseudoflavor(secinfo
->flavor
,
8108 &secinfo
->flavor_info
);
8111 flavor
= RPC_AUTH_MAXFLAVOR
;
8115 if (!nfs_auth_info_match(&server
->auth_info
, flavor
))
8116 flavor
= RPC_AUTH_MAXFLAVOR
;
8118 if (flavor
!= RPC_AUTH_MAXFLAVOR
) {
8119 err
= nfs4_lookup_root_sec(server
, fhandle
,
8126 if (flavor
== RPC_AUTH_MAXFLAVOR
)
8137 static int _nfs41_test_stateid(struct nfs_server
*server
,
8138 nfs4_stateid
*stateid
,
8139 struct rpc_cred
*cred
)
8142 struct nfs41_test_stateid_args args
= {
8145 struct nfs41_test_stateid_res res
;
8146 struct rpc_message msg
= {
8147 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_TEST_STATEID
],
8152 struct rpc_clnt
*rpc_client
= server
->client
;
8154 nfs4_state_protect(server
->nfs_client
, NFS_SP4_MACH_CRED_STATEID
,
8157 dprintk("NFS call test_stateid %p\n", stateid
);
8158 nfs4_init_sequence(&args
.seq_args
, &res
.seq_res
, 0);
8159 nfs4_set_sequence_privileged(&args
.seq_args
);
8160 status
= nfs4_call_sync_sequence(rpc_client
, server
, &msg
,
8161 &args
.seq_args
, &res
.seq_res
);
8162 if (status
!= NFS_OK
) {
8163 dprintk("NFS reply test_stateid: failed, %d\n", status
);
8166 dprintk("NFS reply test_stateid: succeeded, %d\n", -res
.status
);
8171 * nfs41_test_stateid - perform a TEST_STATEID operation
8173 * @server: server / transport on which to perform the operation
8174 * @stateid: state ID to test
8177 * Returns NFS_OK if the server recognizes that "stateid" is valid.
8178 * Otherwise a negative NFS4ERR value is returned if the operation
8179 * failed or the state ID is not currently valid.
8181 static int nfs41_test_stateid(struct nfs_server
*server
,
8182 nfs4_stateid
*stateid
,
8183 struct rpc_cred
*cred
)
8185 struct nfs4_exception exception
= { };
8188 err
= _nfs41_test_stateid(server
, stateid
, cred
);
8189 if (err
!= -NFS4ERR_DELAY
)
8191 nfs4_handle_exception(server
, err
, &exception
);
8192 } while (exception
.retry
);
8196 struct nfs_free_stateid_data
{
8197 struct nfs_server
*server
;
8198 struct nfs41_free_stateid_args args
;
8199 struct nfs41_free_stateid_res res
;
8202 static void nfs41_free_stateid_prepare(struct rpc_task
*task
, void *calldata
)
8204 struct nfs_free_stateid_data
*data
= calldata
;
8205 nfs41_setup_sequence(nfs4_get_session(data
->server
),
8206 &data
->args
.seq_args
,
8211 static void nfs41_free_stateid_done(struct rpc_task
*task
, void *calldata
)
8213 struct nfs_free_stateid_data
*data
= calldata
;
8215 nfs41_sequence_done(task
, &data
->res
.seq_res
);
8217 switch (task
->tk_status
) {
8218 case -NFS4ERR_DELAY
:
8219 if (nfs4_async_handle_error(task
, data
->server
, NULL
, NULL
) == -EAGAIN
)
8220 rpc_restart_call_prepare(task
);
8224 static void nfs41_free_stateid_release(void *calldata
)
8229 static const struct rpc_call_ops nfs41_free_stateid_ops
= {
8230 .rpc_call_prepare
= nfs41_free_stateid_prepare
,
8231 .rpc_call_done
= nfs41_free_stateid_done
,
8232 .rpc_release
= nfs41_free_stateid_release
,
8235 static struct rpc_task
*_nfs41_free_stateid(struct nfs_server
*server
,
8236 nfs4_stateid
*stateid
,
8237 struct rpc_cred
*cred
,
8240 struct rpc_message msg
= {
8241 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_FREE_STATEID
],
8244 struct rpc_task_setup task_setup
= {
8245 .rpc_client
= server
->client
,
8246 .rpc_message
= &msg
,
8247 .callback_ops
= &nfs41_free_stateid_ops
,
8248 .flags
= RPC_TASK_ASYNC
,
8250 struct nfs_free_stateid_data
*data
;
8252 nfs4_state_protect(server
->nfs_client
, NFS_SP4_MACH_CRED_STATEID
,
8253 &task_setup
.rpc_client
, &msg
);
8255 dprintk("NFS call free_stateid %p\n", stateid
);
8256 data
= kmalloc(sizeof(*data
), GFP_NOFS
);
8258 return ERR_PTR(-ENOMEM
);
8259 data
->server
= server
;
8260 nfs4_stateid_copy(&data
->args
.stateid
, stateid
);
8262 task_setup
.callback_data
= data
;
8264 msg
.rpc_argp
= &data
->args
;
8265 msg
.rpc_resp
= &data
->res
;
8266 nfs4_init_sequence(&data
->args
.seq_args
, &data
->res
.seq_res
, 0);
8268 nfs4_set_sequence_privileged(&data
->args
.seq_args
);
8270 return rpc_run_task(&task_setup
);
8274 * nfs41_free_stateid - perform a FREE_STATEID operation
8276 * @server: server / transport on which to perform the operation
8277 * @stateid: state ID to release
8280 * Returns NFS_OK if the server freed "stateid". Otherwise a
8281 * negative NFS4ERR value is returned.
8283 static int nfs41_free_stateid(struct nfs_server
*server
,
8284 nfs4_stateid
*stateid
,
8285 struct rpc_cred
*cred
)
8287 struct rpc_task
*task
;
8290 task
= _nfs41_free_stateid(server
, stateid
, cred
, true);
8292 return PTR_ERR(task
);
8293 ret
= rpc_wait_for_completion_task(task
);
8295 ret
= task
->tk_status
;
8301 nfs41_free_lock_state(struct nfs_server
*server
, struct nfs4_lock_state
*lsp
)
8303 struct rpc_task
*task
;
8304 struct rpc_cred
*cred
= lsp
->ls_state
->owner
->so_cred
;
8306 task
= _nfs41_free_stateid(server
, &lsp
->ls_stateid
, cred
, false);
8307 nfs4_free_lock_state(server
, lsp
);
8313 static bool nfs41_match_stateid(const nfs4_stateid
*s1
,
8314 const nfs4_stateid
*s2
)
8316 if (memcmp(s1
->other
, s2
->other
, sizeof(s1
->other
)) != 0)
8319 if (s1
->seqid
== s2
->seqid
)
8321 if (s1
->seqid
== 0 || s2
->seqid
== 0)
8327 #endif /* CONFIG_NFS_V4_1 */
8329 static bool nfs4_match_stateid(const nfs4_stateid
*s1
,
8330 const nfs4_stateid
*s2
)
8332 return nfs4_stateid_match(s1
, s2
);
8336 static const struct nfs4_state_recovery_ops nfs40_reboot_recovery_ops
= {
8337 .owner_flag_bit
= NFS_OWNER_RECLAIM_REBOOT
,
8338 .state_flag_bit
= NFS_STATE_RECLAIM_REBOOT
,
8339 .recover_open
= nfs4_open_reclaim
,
8340 .recover_lock
= nfs4_lock_reclaim
,
8341 .establish_clid
= nfs4_init_clientid
,
8342 .detect_trunking
= nfs40_discover_server_trunking
,
8345 #if defined(CONFIG_NFS_V4_1)
8346 static const struct nfs4_state_recovery_ops nfs41_reboot_recovery_ops
= {
8347 .owner_flag_bit
= NFS_OWNER_RECLAIM_REBOOT
,
8348 .state_flag_bit
= NFS_STATE_RECLAIM_REBOOT
,
8349 .recover_open
= nfs4_open_reclaim
,
8350 .recover_lock
= nfs4_lock_reclaim
,
8351 .establish_clid
= nfs41_init_clientid
,
8352 .reclaim_complete
= nfs41_proc_reclaim_complete
,
8353 .detect_trunking
= nfs41_discover_server_trunking
,
8355 #endif /* CONFIG_NFS_V4_1 */
8357 static const struct nfs4_state_recovery_ops nfs40_nograce_recovery_ops
= {
8358 .owner_flag_bit
= NFS_OWNER_RECLAIM_NOGRACE
,
8359 .state_flag_bit
= NFS_STATE_RECLAIM_NOGRACE
,
8360 .recover_open
= nfs40_open_expired
,
8361 .recover_lock
= nfs4_lock_expired
,
8362 .establish_clid
= nfs4_init_clientid
,
8365 #if defined(CONFIG_NFS_V4_1)
8366 static const struct nfs4_state_recovery_ops nfs41_nograce_recovery_ops
= {
8367 .owner_flag_bit
= NFS_OWNER_RECLAIM_NOGRACE
,
8368 .state_flag_bit
= NFS_STATE_RECLAIM_NOGRACE
,
8369 .recover_open
= nfs41_open_expired
,
8370 .recover_lock
= nfs41_lock_expired
,
8371 .establish_clid
= nfs41_init_clientid
,
8373 #endif /* CONFIG_NFS_V4_1 */
8375 static const struct nfs4_state_maintenance_ops nfs40_state_renewal_ops
= {
8376 .sched_state_renewal
= nfs4_proc_async_renew
,
8377 .get_state_renewal_cred_locked
= nfs4_get_renew_cred_locked
,
8378 .renew_lease
= nfs4_proc_renew
,
8381 #if defined(CONFIG_NFS_V4_1)
8382 static const struct nfs4_state_maintenance_ops nfs41_state_renewal_ops
= {
8383 .sched_state_renewal
= nfs41_proc_async_sequence
,
8384 .get_state_renewal_cred_locked
= nfs4_get_machine_cred_locked
,
8385 .renew_lease
= nfs4_proc_sequence
,
8389 static const struct nfs4_mig_recovery_ops nfs40_mig_recovery_ops
= {
8390 .get_locations
= _nfs40_proc_get_locations
,
8391 .fsid_present
= _nfs40_proc_fsid_present
,
8394 #if defined(CONFIG_NFS_V4_1)
8395 static const struct nfs4_mig_recovery_ops nfs41_mig_recovery_ops
= {
8396 .get_locations
= _nfs41_proc_get_locations
,
8397 .fsid_present
= _nfs41_proc_fsid_present
,
8399 #endif /* CONFIG_NFS_V4_1 */
8401 static const struct nfs4_minor_version_ops nfs_v4_0_minor_ops
= {
8403 .init_caps
= NFS_CAP_READDIRPLUS
8404 | NFS_CAP_ATOMIC_OPEN
8405 | NFS_CAP_CHANGE_ATTR
8406 | NFS_CAP_POSIX_LOCK
,
8407 .init_client
= nfs40_init_client
,
8408 .shutdown_client
= nfs40_shutdown_client
,
8409 .match_stateid
= nfs4_match_stateid
,
8410 .find_root_sec
= nfs4_find_root_sec
,
8411 .free_lock_state
= nfs4_release_lockowner
,
8412 .call_sync_ops
= &nfs40_call_sync_ops
,
8413 .reboot_recovery_ops
= &nfs40_reboot_recovery_ops
,
8414 .nograce_recovery_ops
= &nfs40_nograce_recovery_ops
,
8415 .state_renewal_ops
= &nfs40_state_renewal_ops
,
8416 .mig_recovery_ops
= &nfs40_mig_recovery_ops
,
8419 #if defined(CONFIG_NFS_V4_1)
8420 static const struct nfs4_minor_version_ops nfs_v4_1_minor_ops
= {
8422 .init_caps
= NFS_CAP_READDIRPLUS
8423 | NFS_CAP_ATOMIC_OPEN
8424 | NFS_CAP_CHANGE_ATTR
8425 | NFS_CAP_POSIX_LOCK
8426 | NFS_CAP_STATEID_NFSV41
8427 | NFS_CAP_ATOMIC_OPEN_V1
,
8428 .init_client
= nfs41_init_client
,
8429 .shutdown_client
= nfs41_shutdown_client
,
8430 .match_stateid
= nfs41_match_stateid
,
8431 .find_root_sec
= nfs41_find_root_sec
,
8432 .free_lock_state
= nfs41_free_lock_state
,
8433 .call_sync_ops
= &nfs41_call_sync_ops
,
8434 .reboot_recovery_ops
= &nfs41_reboot_recovery_ops
,
8435 .nograce_recovery_ops
= &nfs41_nograce_recovery_ops
,
8436 .state_renewal_ops
= &nfs41_state_renewal_ops
,
8437 .mig_recovery_ops
= &nfs41_mig_recovery_ops
,
8441 #if defined(CONFIG_NFS_V4_2)
8442 static const struct nfs4_minor_version_ops nfs_v4_2_minor_ops
= {
8444 .init_caps
= NFS_CAP_READDIRPLUS
8445 | NFS_CAP_ATOMIC_OPEN
8446 | NFS_CAP_CHANGE_ATTR
8447 | NFS_CAP_POSIX_LOCK
8448 | NFS_CAP_STATEID_NFSV41
8449 | NFS_CAP_ATOMIC_OPEN_V1
8451 | NFS_CAP_DEALLOCATE
8453 .init_client
= nfs41_init_client
,
8454 .shutdown_client
= nfs41_shutdown_client
,
8455 .match_stateid
= nfs41_match_stateid
,
8456 .find_root_sec
= nfs41_find_root_sec
,
8457 .free_lock_state
= nfs41_free_lock_state
,
8458 .call_sync_ops
= &nfs41_call_sync_ops
,
8459 .reboot_recovery_ops
= &nfs41_reboot_recovery_ops
,
8460 .nograce_recovery_ops
= &nfs41_nograce_recovery_ops
,
8461 .state_renewal_ops
= &nfs41_state_renewal_ops
,
8465 const struct nfs4_minor_version_ops
*nfs_v4_minor_ops
[] = {
8466 [0] = &nfs_v4_0_minor_ops
,
8467 #if defined(CONFIG_NFS_V4_1)
8468 [1] = &nfs_v4_1_minor_ops
,
8470 #if defined(CONFIG_NFS_V4_2)
8471 [2] = &nfs_v4_2_minor_ops
,
8475 static const struct inode_operations nfs4_dir_inode_operations
= {
8476 .create
= nfs_create
,
8477 .lookup
= nfs_lookup
,
8478 .atomic_open
= nfs_atomic_open
,
8480 .unlink
= nfs_unlink
,
8481 .symlink
= nfs_symlink
,
8485 .rename
= nfs_rename
,
8486 .permission
= nfs_permission
,
8487 .getattr
= nfs_getattr
,
8488 .setattr
= nfs_setattr
,
8489 .getxattr
= generic_getxattr
,
8490 .setxattr
= generic_setxattr
,
8491 .listxattr
= generic_listxattr
,
8492 .removexattr
= generic_removexattr
,
8495 static const struct inode_operations nfs4_file_inode_operations
= {
8496 .permission
= nfs_permission
,
8497 .getattr
= nfs_getattr
,
8498 .setattr
= nfs_setattr
,
8499 .getxattr
= generic_getxattr
,
8500 .setxattr
= generic_setxattr
,
8501 .listxattr
= generic_listxattr
,
8502 .removexattr
= generic_removexattr
,
8505 const struct nfs_rpc_ops nfs_v4_clientops
= {
8506 .version
= 4, /* protocol version */
8507 .dentry_ops
= &nfs4_dentry_operations
,
8508 .dir_inode_ops
= &nfs4_dir_inode_operations
,
8509 .file_inode_ops
= &nfs4_file_inode_operations
,
8510 .file_ops
= &nfs4_file_operations
,
8511 .getroot
= nfs4_proc_get_root
,
8512 .submount
= nfs4_submount
,
8513 .try_mount
= nfs4_try_mount
,
8514 .getattr
= nfs4_proc_getattr
,
8515 .setattr
= nfs4_proc_setattr
,
8516 .lookup
= nfs4_proc_lookup
,
8517 .access
= nfs4_proc_access
,
8518 .readlink
= nfs4_proc_readlink
,
8519 .create
= nfs4_proc_create
,
8520 .remove
= nfs4_proc_remove
,
8521 .unlink_setup
= nfs4_proc_unlink_setup
,
8522 .unlink_rpc_prepare
= nfs4_proc_unlink_rpc_prepare
,
8523 .unlink_done
= nfs4_proc_unlink_done
,
8524 .rename_setup
= nfs4_proc_rename_setup
,
8525 .rename_rpc_prepare
= nfs4_proc_rename_rpc_prepare
,
8526 .rename_done
= nfs4_proc_rename_done
,
8527 .link
= nfs4_proc_link
,
8528 .symlink
= nfs4_proc_symlink
,
8529 .mkdir
= nfs4_proc_mkdir
,
8530 .rmdir
= nfs4_proc_remove
,
8531 .readdir
= nfs4_proc_readdir
,
8532 .mknod
= nfs4_proc_mknod
,
8533 .statfs
= nfs4_proc_statfs
,
8534 .fsinfo
= nfs4_proc_fsinfo
,
8535 .pathconf
= nfs4_proc_pathconf
,
8536 .set_capabilities
= nfs4_server_capabilities
,
8537 .decode_dirent
= nfs4_decode_dirent
,
8538 .pgio_rpc_prepare
= nfs4_proc_pgio_rpc_prepare
,
8539 .read_setup
= nfs4_proc_read_setup
,
8540 .read_done
= nfs4_read_done
,
8541 .write_setup
= nfs4_proc_write_setup
,
8542 .write_done
= nfs4_write_done
,
8543 .commit_setup
= nfs4_proc_commit_setup
,
8544 .commit_rpc_prepare
= nfs4_proc_commit_rpc_prepare
,
8545 .commit_done
= nfs4_commit_done
,
8546 .lock
= nfs4_proc_lock
,
8547 .clear_acl_cache
= nfs4_zap_acl_attr
,
8548 .close_context
= nfs4_close_context
,
8549 .open_context
= nfs4_atomic_open
,
8550 .have_delegation
= nfs4_have_delegation
,
8551 .return_delegation
= nfs4_inode_return_delegation
,
8552 .alloc_client
= nfs4_alloc_client
,
8553 .init_client
= nfs4_init_client
,
8554 .free_client
= nfs4_free_client
,
8555 .create_server
= nfs4_create_server
,
8556 .clone_server
= nfs_clone_server
,
8559 static const struct xattr_handler nfs4_xattr_nfs4_acl_handler
= {
8560 .prefix
= XATTR_NAME_NFSV4_ACL
,
8561 .list
= nfs4_xattr_list_nfs4_acl
,
8562 .get
= nfs4_xattr_get_nfs4_acl
,
8563 .set
= nfs4_xattr_set_nfs4_acl
,
8566 const struct xattr_handler
*nfs4_xattr_handlers
[] = {
8567 &nfs4_xattr_nfs4_acl_handler
,
8568 #ifdef CONFIG_NFS_V4_SECURITY_LABEL
8569 &nfs4_xattr_nfs4_label_handler
,