4 * Client-side procedure declarations for NFSv4.
6 * Copyright (c) 2002 The Regents of the University of Michigan.
9 * Kendrick Smith <kmsmith@umich.edu>
10 * Andy Adamson <andros@umich.edu>
12 * Redistribution and use in source and binary forms, with or without
13 * modification, are permitted provided that the following conditions
16 * 1. Redistributions of source code must retain the above copyright
17 * notice, this list of conditions and the following disclaimer.
18 * 2. Redistributions in binary form must reproduce the above copyright
19 * notice, this list of conditions and the following disclaimer in the
20 * documentation and/or other materials provided with the distribution.
21 * 3. Neither the name of the University nor the names of its
22 * contributors may be used to endorse or promote products derived
23 * from this software without specific prior written permission.
25 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
26 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
27 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
28 * DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
29 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
30 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
31 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
32 * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
33 * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
34 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
35 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
39 #include <linux/delay.h>
40 #include <linux/errno.h>
41 #include <linux/string.h>
42 #include <linux/ratelimit.h>
43 #include <linux/printk.h>
44 #include <linux/slab.h>
45 #include <linux/sunrpc/clnt.h>
46 #include <linux/nfs.h>
47 #include <linux/nfs4.h>
48 #include <linux/nfs_fs.h>
49 #include <linux/nfs_page.h>
50 #include <linux/nfs_mount.h>
51 #include <linux/namei.h>
52 #include <linux/mount.h>
53 #include <linux/module.h>
54 #include <linux/nfs_idmap.h>
55 #include <linux/xattr.h>
56 #include <linux/utsname.h>
57 #include <linux/freezer.h>
60 #include "delegation.h"
66 #include "nfs4session.h"
69 #include "nfs4trace.h"
71 #define NFSDBG_FACILITY NFSDBG_PROC
73 #define NFS4_POLL_RETRY_MIN (HZ/10)
74 #define NFS4_POLL_RETRY_MAX (15*HZ)
77 static int _nfs4_proc_open(struct nfs4_opendata
*data
);
78 static int _nfs4_recover_proc_open(struct nfs4_opendata
*data
);
79 static int nfs4_do_fsinfo(struct nfs_server
*, struct nfs_fh
*, struct nfs_fsinfo
*);
80 static int nfs4_async_handle_error(struct rpc_task
*, const struct nfs_server
*, struct nfs4_state
*, long *);
81 static void nfs_fixup_referral_attributes(struct nfs_fattr
*fattr
);
82 static int nfs4_proc_getattr(struct nfs_server
*, struct nfs_fh
*, struct nfs_fattr
*, struct nfs4_label
*label
);
83 static int _nfs4_proc_getattr(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fattr
*fattr
, struct nfs4_label
*label
);
84 static int nfs4_do_setattr(struct inode
*inode
, struct rpc_cred
*cred
,
85 struct nfs_fattr
*fattr
, struct iattr
*sattr
,
86 struct nfs4_state
*state
, struct nfs4_label
*ilabel
,
87 struct nfs4_label
*olabel
);
88 #ifdef CONFIG_NFS_V4_1
89 static int nfs41_test_stateid(struct nfs_server
*, nfs4_stateid
*,
91 static int nfs41_free_stateid(struct nfs_server
*, nfs4_stateid
*,
95 #ifdef CONFIG_NFS_V4_SECURITY_LABEL
96 static inline struct nfs4_label
*
97 nfs4_label_init_security(struct inode
*dir
, struct dentry
*dentry
,
98 struct iattr
*sattr
, struct nfs4_label
*label
)
105 if (nfs_server_capable(dir
, NFS_CAP_SECURITY_LABEL
) == 0)
108 err
= security_dentry_init_security(dentry
, sattr
->ia_mode
,
109 &dentry
->d_name
, (void **)&label
->label
, &label
->len
);
116 nfs4_label_release_security(struct nfs4_label
*label
)
119 security_release_secctx(label
->label
, label
->len
);
121 static inline u32
*nfs4_bitmask(struct nfs_server
*server
, struct nfs4_label
*label
)
124 return server
->attr_bitmask
;
126 return server
->attr_bitmask_nl
;
129 static inline struct nfs4_label
*
130 nfs4_label_init_security(struct inode
*dir
, struct dentry
*dentry
,
131 struct iattr
*sattr
, struct nfs4_label
*l
)
134 nfs4_label_release_security(struct nfs4_label
*label
)
137 nfs4_bitmask(struct nfs_server
*server
, struct nfs4_label
*label
)
138 { return server
->attr_bitmask
; }
141 /* Prevent leaks of NFSv4 errors into userland */
142 static int nfs4_map_errors(int err
)
147 case -NFS4ERR_RESOURCE
:
148 case -NFS4ERR_LAYOUTTRYLATER
:
149 case -NFS4ERR_RECALLCONFLICT
:
151 case -NFS4ERR_WRONGSEC
:
152 case -NFS4ERR_WRONG_CRED
:
154 case -NFS4ERR_BADOWNER
:
155 case -NFS4ERR_BADNAME
:
157 case -NFS4ERR_SHARE_DENIED
:
159 case -NFS4ERR_MINOR_VERS_MISMATCH
:
160 return -EPROTONOSUPPORT
;
161 case -NFS4ERR_FILE_OPEN
:
164 dprintk("%s could not handle NFSv4 error %d\n",
172 * This is our standard bitmap for GETATTR requests.
174 const u32 nfs4_fattr_bitmap
[3] = {
176 | FATTR4_WORD0_CHANGE
179 | FATTR4_WORD0_FILEID
,
181 | FATTR4_WORD1_NUMLINKS
183 | FATTR4_WORD1_OWNER_GROUP
184 | FATTR4_WORD1_RAWDEV
185 | FATTR4_WORD1_SPACE_USED
186 | FATTR4_WORD1_TIME_ACCESS
187 | FATTR4_WORD1_TIME_METADATA
188 | FATTR4_WORD1_TIME_MODIFY
,
189 #ifdef CONFIG_NFS_V4_SECURITY_LABEL
190 FATTR4_WORD2_SECURITY_LABEL
194 static const u32 nfs4_pnfs_open_bitmap
[3] = {
196 | FATTR4_WORD0_CHANGE
199 | FATTR4_WORD0_FILEID
,
201 | FATTR4_WORD1_NUMLINKS
203 | FATTR4_WORD1_OWNER_GROUP
204 | FATTR4_WORD1_RAWDEV
205 | FATTR4_WORD1_SPACE_USED
206 | FATTR4_WORD1_TIME_ACCESS
207 | FATTR4_WORD1_TIME_METADATA
208 | FATTR4_WORD1_TIME_MODIFY
,
209 FATTR4_WORD2_MDSTHRESHOLD
212 static const u32 nfs4_open_noattr_bitmap
[3] = {
214 | FATTR4_WORD0_CHANGE
215 | FATTR4_WORD0_FILEID
,
218 const u32 nfs4_statfs_bitmap
[3] = {
219 FATTR4_WORD0_FILES_AVAIL
220 | FATTR4_WORD0_FILES_FREE
221 | FATTR4_WORD0_FILES_TOTAL
,
222 FATTR4_WORD1_SPACE_AVAIL
223 | FATTR4_WORD1_SPACE_FREE
224 | FATTR4_WORD1_SPACE_TOTAL
227 const u32 nfs4_pathconf_bitmap
[3] = {
229 | FATTR4_WORD0_MAXNAME
,
233 const u32 nfs4_fsinfo_bitmap
[3] = { FATTR4_WORD0_MAXFILESIZE
234 | FATTR4_WORD0_MAXREAD
235 | FATTR4_WORD0_MAXWRITE
236 | FATTR4_WORD0_LEASE_TIME
,
237 FATTR4_WORD1_TIME_DELTA
238 | FATTR4_WORD1_FS_LAYOUT_TYPES
,
239 FATTR4_WORD2_LAYOUT_BLKSIZE
242 const u32 nfs4_fs_locations_bitmap
[3] = {
244 | FATTR4_WORD0_CHANGE
247 | FATTR4_WORD0_FILEID
248 | FATTR4_WORD0_FS_LOCATIONS
,
250 | FATTR4_WORD1_NUMLINKS
252 | FATTR4_WORD1_OWNER_GROUP
253 | FATTR4_WORD1_RAWDEV
254 | FATTR4_WORD1_SPACE_USED
255 | FATTR4_WORD1_TIME_ACCESS
256 | FATTR4_WORD1_TIME_METADATA
257 | FATTR4_WORD1_TIME_MODIFY
258 | FATTR4_WORD1_MOUNTED_ON_FILEID
,
261 static void nfs4_setup_readdir(u64 cookie
, __be32
*verifier
, struct dentry
*dentry
,
262 struct nfs4_readdir_arg
*readdir
)
267 readdir
->cookie
= cookie
;
268 memcpy(&readdir
->verifier
, verifier
, sizeof(readdir
->verifier
));
273 memset(&readdir
->verifier
, 0, sizeof(readdir
->verifier
));
278 * NFSv4 servers do not return entries for '.' and '..'
279 * Therefore, we fake these entries here. We let '.'
280 * have cookie 0 and '..' have cookie 1. Note that
281 * when talking to the server, we always send cookie 0
284 start
= p
= kmap_atomic(*readdir
->pages
);
287 *p
++ = xdr_one
; /* next */
288 *p
++ = xdr_zero
; /* cookie, first word */
289 *p
++ = xdr_one
; /* cookie, second word */
290 *p
++ = xdr_one
; /* entry len */
291 memcpy(p
, ".\0\0\0", 4); /* entry */
293 *p
++ = xdr_one
; /* bitmap length */
294 *p
++ = htonl(FATTR4_WORD0_FILEID
); /* bitmap */
295 *p
++ = htonl(8); /* attribute buffer length */
296 p
= xdr_encode_hyper(p
, NFS_FILEID(dentry
->d_inode
));
299 *p
++ = xdr_one
; /* next */
300 *p
++ = xdr_zero
; /* cookie, first word */
301 *p
++ = xdr_two
; /* cookie, second word */
302 *p
++ = xdr_two
; /* entry len */
303 memcpy(p
, "..\0\0", 4); /* entry */
305 *p
++ = xdr_one
; /* bitmap length */
306 *p
++ = htonl(FATTR4_WORD0_FILEID
); /* bitmap */
307 *p
++ = htonl(8); /* attribute buffer length */
308 p
= xdr_encode_hyper(p
, NFS_FILEID(dentry
->d_parent
->d_inode
));
310 readdir
->pgbase
= (char *)p
- (char *)start
;
311 readdir
->count
-= readdir
->pgbase
;
312 kunmap_atomic(start
);
315 static long nfs4_update_delay(long *timeout
)
319 return NFS4_POLL_RETRY_MAX
;
321 *timeout
= NFS4_POLL_RETRY_MIN
;
322 if (*timeout
> NFS4_POLL_RETRY_MAX
)
323 *timeout
= NFS4_POLL_RETRY_MAX
;
329 static int nfs4_delay(struct rpc_clnt
*clnt
, long *timeout
)
335 freezable_schedule_timeout_killable_unsafe(
336 nfs4_update_delay(timeout
));
337 if (fatal_signal_pending(current
))
342 /* This is the error handling routine for processes that are allowed
345 int nfs4_handle_exception(struct nfs_server
*server
, int errorcode
, struct nfs4_exception
*exception
)
347 struct nfs_client
*clp
= server
->nfs_client
;
348 struct nfs4_state
*state
= exception
->state
;
349 struct inode
*inode
= exception
->inode
;
352 exception
->retry
= 0;
356 case -NFS4ERR_OPENMODE
:
357 if (inode
&& nfs4_have_delegation(inode
, FMODE_READ
)) {
358 nfs4_inode_return_delegation(inode
);
359 exception
->retry
= 1;
364 ret
= nfs4_schedule_stateid_recovery(server
, state
);
367 goto wait_on_recovery
;
368 case -NFS4ERR_DELEG_REVOKED
:
369 case -NFS4ERR_ADMIN_REVOKED
:
370 case -NFS4ERR_BAD_STATEID
:
373 ret
= nfs4_schedule_stateid_recovery(server
, state
);
376 goto wait_on_recovery
;
377 case -NFS4ERR_EXPIRED
:
379 ret
= nfs4_schedule_stateid_recovery(server
, state
);
383 case -NFS4ERR_STALE_STATEID
:
384 case -NFS4ERR_STALE_CLIENTID
:
385 nfs4_schedule_lease_recovery(clp
);
386 goto wait_on_recovery
;
388 ret
= nfs4_schedule_migration_recovery(server
);
391 goto wait_on_recovery
;
392 case -NFS4ERR_LEASE_MOVED
:
393 nfs4_schedule_lease_moved_recovery(clp
);
394 goto wait_on_recovery
;
395 #if defined(CONFIG_NFS_V4_1)
396 case -NFS4ERR_BADSESSION
:
397 case -NFS4ERR_BADSLOT
:
398 case -NFS4ERR_BAD_HIGH_SLOT
:
399 case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION
:
400 case -NFS4ERR_DEADSESSION
:
401 case -NFS4ERR_SEQ_FALSE_RETRY
:
402 case -NFS4ERR_SEQ_MISORDERED
:
403 dprintk("%s ERROR: %d Reset session\n", __func__
,
405 nfs4_schedule_session_recovery(clp
->cl_session
, errorcode
);
406 goto wait_on_recovery
;
407 #endif /* defined(CONFIG_NFS_V4_1) */
408 case -NFS4ERR_FILE_OPEN
:
409 if (exception
->timeout
> HZ
) {
410 /* We have retried a decent amount, time to
418 ret
= nfs4_delay(server
->client
, &exception
->timeout
);
421 case -NFS4ERR_RETRY_UNCACHED_REP
:
422 case -NFS4ERR_OLD_STATEID
:
423 exception
->retry
= 1;
425 case -NFS4ERR_BADOWNER
:
426 /* The following works around a Linux server bug! */
427 case -NFS4ERR_BADNAME
:
428 if (server
->caps
& NFS_CAP_UIDGID_NOMAP
) {
429 server
->caps
&= ~NFS_CAP_UIDGID_NOMAP
;
430 exception
->retry
= 1;
431 printk(KERN_WARNING
"NFS: v4 server %s "
432 "does not accept raw "
434 "Reenabling the idmapper.\n",
435 server
->nfs_client
->cl_hostname
);
438 /* We failed to handle the error */
439 return nfs4_map_errors(ret
);
441 ret
= nfs4_wait_clnt_recover(clp
);
442 if (test_bit(NFS_MIG_FAILED
, &server
->mig_status
))
445 exception
->retry
= 1;
450 * Return 'true' if 'clp' is using an rpc_client that is integrity protected
451 * or 'false' otherwise.
453 static bool _nfs4_is_integrity_protected(struct nfs_client
*clp
)
455 rpc_authflavor_t flavor
= clp
->cl_rpcclient
->cl_auth
->au_flavor
;
457 if (flavor
== RPC_AUTH_GSS_KRB5I
||
458 flavor
== RPC_AUTH_GSS_KRB5P
)
464 static void do_renew_lease(struct nfs_client
*clp
, unsigned long timestamp
)
466 spin_lock(&clp
->cl_lock
);
467 if (time_before(clp
->cl_last_renewal
,timestamp
))
468 clp
->cl_last_renewal
= timestamp
;
469 spin_unlock(&clp
->cl_lock
);
472 static void renew_lease(const struct nfs_server
*server
, unsigned long timestamp
)
474 do_renew_lease(server
->nfs_client
, timestamp
);
477 struct nfs4_call_sync_data
{
478 const struct nfs_server
*seq_server
;
479 struct nfs4_sequence_args
*seq_args
;
480 struct nfs4_sequence_res
*seq_res
;
483 static void nfs4_init_sequence(struct nfs4_sequence_args
*args
,
484 struct nfs4_sequence_res
*res
, int cache_reply
)
486 args
->sa_slot
= NULL
;
487 args
->sa_cache_this
= cache_reply
;
488 args
->sa_privileged
= 0;
493 static void nfs4_set_sequence_privileged(struct nfs4_sequence_args
*args
)
495 args
->sa_privileged
= 1;
498 static int nfs40_setup_sequence(const struct nfs_server
*server
,
499 struct nfs4_sequence_args
*args
,
500 struct nfs4_sequence_res
*res
,
501 struct rpc_task
*task
)
503 struct nfs4_slot_table
*tbl
= server
->nfs_client
->cl_slot_tbl
;
504 struct nfs4_slot
*slot
;
506 /* slot already allocated? */
507 if (res
->sr_slot
!= NULL
)
510 spin_lock(&tbl
->slot_tbl_lock
);
511 if (nfs4_slot_tbl_draining(tbl
) && !args
->sa_privileged
)
514 slot
= nfs4_alloc_slot(tbl
);
516 if (slot
== ERR_PTR(-ENOMEM
))
517 task
->tk_timeout
= HZ
>> 2;
520 spin_unlock(&tbl
->slot_tbl_lock
);
522 args
->sa_slot
= slot
;
526 rpc_call_start(task
);
530 if (args
->sa_privileged
)
531 rpc_sleep_on_priority(&tbl
->slot_tbl_waitq
, task
,
532 NULL
, RPC_PRIORITY_PRIVILEGED
);
534 rpc_sleep_on(&tbl
->slot_tbl_waitq
, task
, NULL
);
535 spin_unlock(&tbl
->slot_tbl_lock
);
539 static int nfs40_sequence_done(struct rpc_task
*task
,
540 struct nfs4_sequence_res
*res
)
542 struct nfs4_slot
*slot
= res
->sr_slot
;
543 struct nfs4_slot_table
*tbl
;
549 spin_lock(&tbl
->slot_tbl_lock
);
550 if (!nfs41_wake_and_assign_slot(tbl
, slot
))
551 nfs4_free_slot(tbl
, slot
);
552 spin_unlock(&tbl
->slot_tbl_lock
);
559 #if defined(CONFIG_NFS_V4_1)
561 static void nfs41_sequence_free_slot(struct nfs4_sequence_res
*res
)
563 struct nfs4_session
*session
;
564 struct nfs4_slot_table
*tbl
;
565 struct nfs4_slot
*slot
= res
->sr_slot
;
566 bool send_new_highest_used_slotid
= false;
569 session
= tbl
->session
;
571 spin_lock(&tbl
->slot_tbl_lock
);
572 /* Be nice to the server: try to ensure that the last transmitted
573 * value for highest_user_slotid <= target_highest_slotid
575 if (tbl
->highest_used_slotid
> tbl
->target_highest_slotid
)
576 send_new_highest_used_slotid
= true;
578 if (nfs41_wake_and_assign_slot(tbl
, slot
)) {
579 send_new_highest_used_slotid
= false;
582 nfs4_free_slot(tbl
, slot
);
584 if (tbl
->highest_used_slotid
!= NFS4_NO_SLOT
)
585 send_new_highest_used_slotid
= false;
587 spin_unlock(&tbl
->slot_tbl_lock
);
589 if (send_new_highest_used_slotid
)
590 nfs41_server_notify_highest_slotid_update(session
->clp
);
593 int nfs41_sequence_done(struct rpc_task
*task
, struct nfs4_sequence_res
*res
)
595 struct nfs4_session
*session
;
596 struct nfs4_slot
*slot
= res
->sr_slot
;
597 struct nfs_client
*clp
;
598 bool interrupted
= false;
603 /* don't increment the sequence number if the task wasn't sent */
604 if (!RPC_WAS_SENT(task
))
607 session
= slot
->table
->session
;
609 if (slot
->interrupted
) {
610 slot
->interrupted
= 0;
614 trace_nfs4_sequence_done(session
, res
);
615 /* Check the SEQUENCE operation status */
616 switch (res
->sr_status
) {
618 /* Update the slot's sequence and clientid lease timer */
621 do_renew_lease(clp
, res
->sr_timestamp
);
622 /* Check sequence flags */
623 if (res
->sr_status_flags
!= 0)
624 nfs4_schedule_lease_recovery(clp
);
625 nfs41_update_target_slotid(slot
->table
, slot
, res
);
629 * sr_status remains 1 if an RPC level error occurred.
630 * The server may or may not have processed the sequence
632 * Mark the slot as having hosted an interrupted RPC call.
634 slot
->interrupted
= 1;
637 /* The server detected a resend of the RPC call and
638 * returned NFS4ERR_DELAY as per Section 2.10.6.2
641 dprintk("%s: slot=%u seq=%u: Operation in progress\n",
646 case -NFS4ERR_BADSLOT
:
648 * The slot id we used was probably retired. Try again
649 * using a different slot id.
652 case -NFS4ERR_SEQ_MISORDERED
:
654 * Was the last operation on this sequence interrupted?
655 * If so, retry after bumping the sequence number.
662 * Could this slot have been previously retired?
663 * If so, then the server may be expecting seq_nr = 1!
665 if (slot
->seq_nr
!= 1) {
670 case -NFS4ERR_SEQ_FALSE_RETRY
:
674 /* Just update the slot sequence no. */
678 /* The session may be reset by one of the error handlers. */
679 dprintk("%s: Error %d free the slot \n", __func__
, res
->sr_status
);
680 nfs41_sequence_free_slot(res
);
684 if (rpc_restart_call_prepare(task
)) {
690 if (!rpc_restart_call(task
))
692 rpc_delay(task
, NFS4_POLL_RETRY_MAX
);
695 EXPORT_SYMBOL_GPL(nfs41_sequence_done
);
697 static int nfs4_sequence_done(struct rpc_task
*task
,
698 struct nfs4_sequence_res
*res
)
700 if (res
->sr_slot
== NULL
)
702 if (!res
->sr_slot
->table
->session
)
703 return nfs40_sequence_done(task
, res
);
704 return nfs41_sequence_done(task
, res
);
707 int nfs41_setup_sequence(struct nfs4_session
*session
,
708 struct nfs4_sequence_args
*args
,
709 struct nfs4_sequence_res
*res
,
710 struct rpc_task
*task
)
712 struct nfs4_slot
*slot
;
713 struct nfs4_slot_table
*tbl
;
715 dprintk("--> %s\n", __func__
);
716 /* slot already allocated? */
717 if (res
->sr_slot
!= NULL
)
720 tbl
= &session
->fc_slot_table
;
722 task
->tk_timeout
= 0;
724 spin_lock(&tbl
->slot_tbl_lock
);
725 if (test_bit(NFS4_SLOT_TBL_DRAINING
, &tbl
->slot_tbl_state
) &&
726 !args
->sa_privileged
) {
727 /* The state manager will wait until the slot table is empty */
728 dprintk("%s session is draining\n", __func__
);
732 slot
= nfs4_alloc_slot(tbl
);
734 /* If out of memory, try again in 1/4 second */
735 if (slot
== ERR_PTR(-ENOMEM
))
736 task
->tk_timeout
= HZ
>> 2;
737 dprintk("<-- %s: no free slots\n", __func__
);
740 spin_unlock(&tbl
->slot_tbl_lock
);
742 args
->sa_slot
= slot
;
744 dprintk("<-- %s slotid=%u seqid=%u\n", __func__
,
745 slot
->slot_nr
, slot
->seq_nr
);
748 res
->sr_timestamp
= jiffies
;
749 res
->sr_status_flags
= 0;
751 * sr_status is only set in decode_sequence, and so will remain
752 * set to 1 if an rpc level failure occurs.
755 trace_nfs4_setup_sequence(session
, args
);
757 rpc_call_start(task
);
760 /* Privileged tasks are queued with top priority */
761 if (args
->sa_privileged
)
762 rpc_sleep_on_priority(&tbl
->slot_tbl_waitq
, task
,
763 NULL
, RPC_PRIORITY_PRIVILEGED
);
765 rpc_sleep_on(&tbl
->slot_tbl_waitq
, task
, NULL
);
766 spin_unlock(&tbl
->slot_tbl_lock
);
769 EXPORT_SYMBOL_GPL(nfs41_setup_sequence
);
771 static int nfs4_setup_sequence(const struct nfs_server
*server
,
772 struct nfs4_sequence_args
*args
,
773 struct nfs4_sequence_res
*res
,
774 struct rpc_task
*task
)
776 struct nfs4_session
*session
= nfs4_get_session(server
);
780 return nfs40_setup_sequence(server
, args
, res
, task
);
782 dprintk("--> %s clp %p session %p sr_slot %u\n",
783 __func__
, session
->clp
, session
, res
->sr_slot
?
784 res
->sr_slot
->slot_nr
: NFS4_NO_SLOT
);
786 ret
= nfs41_setup_sequence(session
, args
, res
, task
);
788 dprintk("<-- %s status=%d\n", __func__
, ret
);
792 static void nfs41_call_sync_prepare(struct rpc_task
*task
, void *calldata
)
794 struct nfs4_call_sync_data
*data
= calldata
;
795 struct nfs4_session
*session
= nfs4_get_session(data
->seq_server
);
797 dprintk("--> %s data->seq_server %p\n", __func__
, data
->seq_server
);
799 nfs41_setup_sequence(session
, data
->seq_args
, data
->seq_res
, task
);
802 static void nfs41_call_sync_done(struct rpc_task
*task
, void *calldata
)
804 struct nfs4_call_sync_data
*data
= calldata
;
806 nfs41_sequence_done(task
, data
->seq_res
);
809 static const struct rpc_call_ops nfs41_call_sync_ops
= {
810 .rpc_call_prepare
= nfs41_call_sync_prepare
,
811 .rpc_call_done
= nfs41_call_sync_done
,
814 #else /* !CONFIG_NFS_V4_1 */
816 static int nfs4_setup_sequence(const struct nfs_server
*server
,
817 struct nfs4_sequence_args
*args
,
818 struct nfs4_sequence_res
*res
,
819 struct rpc_task
*task
)
821 return nfs40_setup_sequence(server
, args
, res
, task
);
824 static int nfs4_sequence_done(struct rpc_task
*task
,
825 struct nfs4_sequence_res
*res
)
827 return nfs40_sequence_done(task
, res
);
830 #endif /* !CONFIG_NFS_V4_1 */
832 static void nfs40_call_sync_prepare(struct rpc_task
*task
, void *calldata
)
834 struct nfs4_call_sync_data
*data
= calldata
;
835 nfs4_setup_sequence(data
->seq_server
,
836 data
->seq_args
, data
->seq_res
, task
);
839 static void nfs40_call_sync_done(struct rpc_task
*task
, void *calldata
)
841 struct nfs4_call_sync_data
*data
= calldata
;
842 nfs4_sequence_done(task
, data
->seq_res
);
845 static const struct rpc_call_ops nfs40_call_sync_ops
= {
846 .rpc_call_prepare
= nfs40_call_sync_prepare
,
847 .rpc_call_done
= nfs40_call_sync_done
,
850 static int nfs4_call_sync_sequence(struct rpc_clnt
*clnt
,
851 struct nfs_server
*server
,
852 struct rpc_message
*msg
,
853 struct nfs4_sequence_args
*args
,
854 struct nfs4_sequence_res
*res
)
857 struct rpc_task
*task
;
858 struct nfs_client
*clp
= server
->nfs_client
;
859 struct nfs4_call_sync_data data
= {
860 .seq_server
= server
,
864 struct rpc_task_setup task_setup
= {
867 .callback_ops
= clp
->cl_mvops
->call_sync_ops
,
868 .callback_data
= &data
871 task
= rpc_run_task(&task_setup
);
875 ret
= task
->tk_status
;
881 int nfs4_call_sync(struct rpc_clnt
*clnt
,
882 struct nfs_server
*server
,
883 struct rpc_message
*msg
,
884 struct nfs4_sequence_args
*args
,
885 struct nfs4_sequence_res
*res
,
888 nfs4_init_sequence(args
, res
, cache_reply
);
889 return nfs4_call_sync_sequence(clnt
, server
, msg
, args
, res
);
892 static void update_changeattr(struct inode
*dir
, struct nfs4_change_info
*cinfo
)
894 struct nfs_inode
*nfsi
= NFS_I(dir
);
896 spin_lock(&dir
->i_lock
);
897 nfsi
->cache_validity
|= NFS_INO_INVALID_ATTR
|NFS_INO_INVALID_DATA
;
898 if (!cinfo
->atomic
|| cinfo
->before
!= dir
->i_version
)
899 nfs_force_lookup_revalidate(dir
);
900 dir
->i_version
= cinfo
->after
;
901 nfs_fscache_invalidate(dir
);
902 spin_unlock(&dir
->i_lock
);
905 struct nfs4_opendata
{
907 struct nfs_openargs o_arg
;
908 struct nfs_openres o_res
;
909 struct nfs_open_confirmargs c_arg
;
910 struct nfs_open_confirmres c_res
;
911 struct nfs4_string owner_name
;
912 struct nfs4_string group_name
;
913 struct nfs_fattr f_attr
;
914 struct nfs4_label
*f_label
;
916 struct dentry
*dentry
;
917 struct nfs4_state_owner
*owner
;
918 struct nfs4_state
*state
;
920 unsigned long timestamp
;
921 unsigned int rpc_done
: 1;
922 unsigned int file_created
: 1;
923 unsigned int is_recover
: 1;
928 static bool nfs4_clear_cap_atomic_open_v1(struct nfs_server
*server
,
929 int err
, struct nfs4_exception
*exception
)
933 if (!(server
->caps
& NFS_CAP_ATOMIC_OPEN_V1
))
935 server
->caps
&= ~NFS_CAP_ATOMIC_OPEN_V1
;
936 exception
->retry
= 1;
940 static enum open_claim_type4
941 nfs4_map_atomic_open_claim(struct nfs_server
*server
,
942 enum open_claim_type4 claim
)
944 if (server
->caps
& NFS_CAP_ATOMIC_OPEN_V1
)
949 case NFS4_OPEN_CLAIM_FH
:
950 return NFS4_OPEN_CLAIM_NULL
;
951 case NFS4_OPEN_CLAIM_DELEG_CUR_FH
:
952 return NFS4_OPEN_CLAIM_DELEGATE_CUR
;
953 case NFS4_OPEN_CLAIM_DELEG_PREV_FH
:
954 return NFS4_OPEN_CLAIM_DELEGATE_PREV
;
958 static void nfs4_init_opendata_res(struct nfs4_opendata
*p
)
960 p
->o_res
.f_attr
= &p
->f_attr
;
961 p
->o_res
.f_label
= p
->f_label
;
962 p
->o_res
.seqid
= p
->o_arg
.seqid
;
963 p
->c_res
.seqid
= p
->c_arg
.seqid
;
964 p
->o_res
.server
= p
->o_arg
.server
;
965 p
->o_res
.access_request
= p
->o_arg
.access
;
966 nfs_fattr_init(&p
->f_attr
);
967 nfs_fattr_init_names(&p
->f_attr
, &p
->owner_name
, &p
->group_name
);
970 static struct nfs4_opendata
*nfs4_opendata_alloc(struct dentry
*dentry
,
971 struct nfs4_state_owner
*sp
, fmode_t fmode
, int flags
,
972 const struct iattr
*attrs
,
973 struct nfs4_label
*label
,
974 enum open_claim_type4 claim
,
977 struct dentry
*parent
= dget_parent(dentry
);
978 struct inode
*dir
= parent
->d_inode
;
979 struct nfs_server
*server
= NFS_SERVER(dir
);
980 struct nfs4_opendata
*p
;
982 p
= kzalloc(sizeof(*p
), gfp_mask
);
986 p
->f_label
= nfs4_label_alloc(server
, gfp_mask
);
987 if (IS_ERR(p
->f_label
))
990 p
->o_arg
.seqid
= nfs_alloc_seqid(&sp
->so_seqid
, gfp_mask
);
991 if (p
->o_arg
.seqid
== NULL
)
993 nfs_sb_active(dentry
->d_sb
);
994 p
->dentry
= dget(dentry
);
997 atomic_inc(&sp
->so_count
);
998 p
->o_arg
.open_flags
= flags
;
999 p
->o_arg
.fmode
= fmode
& (FMODE_READ
|FMODE_WRITE
);
1000 /* don't put an ACCESS op in OPEN compound if O_EXCL, because ACCESS
1001 * will return permission denied for all bits until close */
1002 if (!(flags
& O_EXCL
)) {
1003 /* ask server to check for all possible rights as results
1005 p
->o_arg
.access
= NFS4_ACCESS_READ
| NFS4_ACCESS_MODIFY
|
1006 NFS4_ACCESS_EXTEND
| NFS4_ACCESS_EXECUTE
;
1008 p
->o_arg
.clientid
= server
->nfs_client
->cl_clientid
;
1009 p
->o_arg
.id
.create_time
= ktime_to_ns(sp
->so_seqid
.create_time
);
1010 p
->o_arg
.id
.uniquifier
= sp
->so_seqid
.owner_id
;
1011 p
->o_arg
.name
= &dentry
->d_name
;
1012 p
->o_arg
.server
= server
;
1013 p
->o_arg
.bitmask
= nfs4_bitmask(server
, label
);
1014 p
->o_arg
.open_bitmap
= &nfs4_fattr_bitmap
[0];
1015 p
->o_arg
.label
= label
;
1016 p
->o_arg
.claim
= nfs4_map_atomic_open_claim(server
, claim
);
1017 switch (p
->o_arg
.claim
) {
1018 case NFS4_OPEN_CLAIM_NULL
:
1019 case NFS4_OPEN_CLAIM_DELEGATE_CUR
:
1020 case NFS4_OPEN_CLAIM_DELEGATE_PREV
:
1021 p
->o_arg
.fh
= NFS_FH(dir
);
1023 case NFS4_OPEN_CLAIM_PREVIOUS
:
1024 case NFS4_OPEN_CLAIM_FH
:
1025 case NFS4_OPEN_CLAIM_DELEG_CUR_FH
:
1026 case NFS4_OPEN_CLAIM_DELEG_PREV_FH
:
1027 p
->o_arg
.fh
= NFS_FH(dentry
->d_inode
);
1029 if (attrs
!= NULL
&& attrs
->ia_valid
!= 0) {
1032 p
->o_arg
.u
.attrs
= &p
->attrs
;
1033 memcpy(&p
->attrs
, attrs
, sizeof(p
->attrs
));
1036 verf
[1] = current
->pid
;
1037 memcpy(p
->o_arg
.u
.verifier
.data
, verf
,
1038 sizeof(p
->o_arg
.u
.verifier
.data
));
1040 p
->c_arg
.fh
= &p
->o_res
.fh
;
1041 p
->c_arg
.stateid
= &p
->o_res
.stateid
;
1042 p
->c_arg
.seqid
= p
->o_arg
.seqid
;
1043 nfs4_init_opendata_res(p
);
1044 kref_init(&p
->kref
);
1048 nfs4_label_free(p
->f_label
);
1056 static void nfs4_opendata_free(struct kref
*kref
)
1058 struct nfs4_opendata
*p
= container_of(kref
,
1059 struct nfs4_opendata
, kref
);
1060 struct super_block
*sb
= p
->dentry
->d_sb
;
1062 nfs_free_seqid(p
->o_arg
.seqid
);
1063 if (p
->state
!= NULL
)
1064 nfs4_put_open_state(p
->state
);
1065 nfs4_put_state_owner(p
->owner
);
1067 nfs4_label_free(p
->f_label
);
1071 nfs_sb_deactive(sb
);
1072 nfs_fattr_free_names(&p
->f_attr
);
1073 kfree(p
->f_attr
.mdsthreshold
);
1077 static void nfs4_opendata_put(struct nfs4_opendata
*p
)
1080 kref_put(&p
->kref
, nfs4_opendata_free
);
1083 static int nfs4_wait_for_completion_rpc_task(struct rpc_task
*task
)
1087 ret
= rpc_wait_for_completion_task(task
);
1091 static int can_open_cached(struct nfs4_state
*state
, fmode_t mode
, int open_mode
)
1095 if (open_mode
& (O_EXCL
|O_TRUNC
))
1097 switch (mode
& (FMODE_READ
|FMODE_WRITE
)) {
1099 ret
|= test_bit(NFS_O_RDONLY_STATE
, &state
->flags
) != 0
1100 && state
->n_rdonly
!= 0;
1103 ret
|= test_bit(NFS_O_WRONLY_STATE
, &state
->flags
) != 0
1104 && state
->n_wronly
!= 0;
1106 case FMODE_READ
|FMODE_WRITE
:
1107 ret
|= test_bit(NFS_O_RDWR_STATE
, &state
->flags
) != 0
1108 && state
->n_rdwr
!= 0;
1114 static int can_open_delegated(struct nfs_delegation
*delegation
, fmode_t fmode
)
1116 if (delegation
== NULL
)
1118 if ((delegation
->type
& fmode
) != fmode
)
1120 if (test_bit(NFS_DELEGATION_NEED_RECLAIM
, &delegation
->flags
))
1122 if (test_bit(NFS_DELEGATION_RETURNING
, &delegation
->flags
))
1124 nfs_mark_delegation_referenced(delegation
);
1128 static void update_open_stateflags(struct nfs4_state
*state
, fmode_t fmode
)
1137 case FMODE_READ
|FMODE_WRITE
:
1140 nfs4_state_set_mode_locked(state
, state
->state
| fmode
);
1143 static void nfs_test_and_clear_all_open_stateid(struct nfs4_state
*state
)
1145 struct nfs_client
*clp
= state
->owner
->so_server
->nfs_client
;
1146 bool need_recover
= false;
1148 if (test_and_clear_bit(NFS_O_RDONLY_STATE
, &state
->flags
) && state
->n_rdonly
)
1149 need_recover
= true;
1150 if (test_and_clear_bit(NFS_O_WRONLY_STATE
, &state
->flags
) && state
->n_wronly
)
1151 need_recover
= true;
1152 if (test_and_clear_bit(NFS_O_RDWR_STATE
, &state
->flags
) && state
->n_rdwr
)
1153 need_recover
= true;
1155 nfs4_state_mark_reclaim_nograce(clp
, state
);
1158 static bool nfs_need_update_open_stateid(struct nfs4_state
*state
,
1159 nfs4_stateid
*stateid
)
1161 if (test_and_set_bit(NFS_OPEN_STATE
, &state
->flags
) == 0)
1163 if (!nfs4_stateid_match_other(stateid
, &state
->open_stateid
)) {
1164 nfs_test_and_clear_all_open_stateid(state
);
1167 if (nfs4_stateid_is_newer(stateid
, &state
->open_stateid
))
1172 static void nfs_clear_open_stateid_locked(struct nfs4_state
*state
,
1173 nfs4_stateid
*stateid
, fmode_t fmode
)
1175 clear_bit(NFS_O_RDWR_STATE
, &state
->flags
);
1176 switch (fmode
& (FMODE_READ
|FMODE_WRITE
)) {
1178 clear_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
1181 clear_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
1184 clear_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
1185 clear_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
1186 clear_bit(NFS_OPEN_STATE
, &state
->flags
);
1188 if (stateid
== NULL
)
1190 if (!nfs_need_update_open_stateid(state
, stateid
))
1192 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) == 0)
1193 nfs4_stateid_copy(&state
->stateid
, stateid
);
1194 nfs4_stateid_copy(&state
->open_stateid
, stateid
);
1197 static void nfs_clear_open_stateid(struct nfs4_state
*state
, nfs4_stateid
*stateid
, fmode_t fmode
)
1199 write_seqlock(&state
->seqlock
);
1200 nfs_clear_open_stateid_locked(state
, stateid
, fmode
);
1201 write_sequnlock(&state
->seqlock
);
1202 if (test_bit(NFS_STATE_RECLAIM_NOGRACE
, &state
->flags
))
1203 nfs4_schedule_state_manager(state
->owner
->so_server
->nfs_client
);
1206 static void nfs_set_open_stateid_locked(struct nfs4_state
*state
, nfs4_stateid
*stateid
, fmode_t fmode
)
1210 set_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
1213 set_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
1215 case FMODE_READ
|FMODE_WRITE
:
1216 set_bit(NFS_O_RDWR_STATE
, &state
->flags
);
1218 if (!nfs_need_update_open_stateid(state
, stateid
))
1220 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) == 0)
1221 nfs4_stateid_copy(&state
->stateid
, stateid
);
1222 nfs4_stateid_copy(&state
->open_stateid
, stateid
);
1225 static void __update_open_stateid(struct nfs4_state
*state
, nfs4_stateid
*open_stateid
, const nfs4_stateid
*deleg_stateid
, fmode_t fmode
)
1228 * Protect the call to nfs4_state_set_mode_locked and
1229 * serialise the stateid update
1231 write_seqlock(&state
->seqlock
);
1232 if (deleg_stateid
!= NULL
) {
1233 nfs4_stateid_copy(&state
->stateid
, deleg_stateid
);
1234 set_bit(NFS_DELEGATED_STATE
, &state
->flags
);
1236 if (open_stateid
!= NULL
)
1237 nfs_set_open_stateid_locked(state
, open_stateid
, fmode
);
1238 write_sequnlock(&state
->seqlock
);
1239 spin_lock(&state
->owner
->so_lock
);
1240 update_open_stateflags(state
, fmode
);
1241 spin_unlock(&state
->owner
->so_lock
);
1244 static int update_open_stateid(struct nfs4_state
*state
, nfs4_stateid
*open_stateid
, nfs4_stateid
*delegation
, fmode_t fmode
)
1246 struct nfs_inode
*nfsi
= NFS_I(state
->inode
);
1247 struct nfs_delegation
*deleg_cur
;
1250 fmode
&= (FMODE_READ
|FMODE_WRITE
);
1253 deleg_cur
= rcu_dereference(nfsi
->delegation
);
1254 if (deleg_cur
== NULL
)
1257 spin_lock(&deleg_cur
->lock
);
1258 if (rcu_dereference(nfsi
->delegation
) != deleg_cur
||
1259 test_bit(NFS_DELEGATION_RETURNING
, &deleg_cur
->flags
) ||
1260 (deleg_cur
->type
& fmode
) != fmode
)
1261 goto no_delegation_unlock
;
1263 if (delegation
== NULL
)
1264 delegation
= &deleg_cur
->stateid
;
1265 else if (!nfs4_stateid_match(&deleg_cur
->stateid
, delegation
))
1266 goto no_delegation_unlock
;
1268 nfs_mark_delegation_referenced(deleg_cur
);
1269 __update_open_stateid(state
, open_stateid
, &deleg_cur
->stateid
, fmode
);
1271 no_delegation_unlock
:
1272 spin_unlock(&deleg_cur
->lock
);
1276 if (!ret
&& open_stateid
!= NULL
) {
1277 __update_open_stateid(state
, open_stateid
, NULL
, fmode
);
1280 if (test_bit(NFS_STATE_RECLAIM_NOGRACE
, &state
->flags
))
1281 nfs4_schedule_state_manager(state
->owner
->so_server
->nfs_client
);
1287 static void nfs4_return_incompatible_delegation(struct inode
*inode
, fmode_t fmode
)
1289 struct nfs_delegation
*delegation
;
1292 delegation
= rcu_dereference(NFS_I(inode
)->delegation
);
1293 if (delegation
== NULL
|| (delegation
->type
& fmode
) == fmode
) {
1298 nfs4_inode_return_delegation(inode
);
1301 static struct nfs4_state
*nfs4_try_open_cached(struct nfs4_opendata
*opendata
)
1303 struct nfs4_state
*state
= opendata
->state
;
1304 struct nfs_inode
*nfsi
= NFS_I(state
->inode
);
1305 struct nfs_delegation
*delegation
;
1306 int open_mode
= opendata
->o_arg
.open_flags
;
1307 fmode_t fmode
= opendata
->o_arg
.fmode
;
1308 nfs4_stateid stateid
;
1312 spin_lock(&state
->owner
->so_lock
);
1313 if (can_open_cached(state
, fmode
, open_mode
)) {
1314 update_open_stateflags(state
, fmode
);
1315 spin_unlock(&state
->owner
->so_lock
);
1316 goto out_return_state
;
1318 spin_unlock(&state
->owner
->so_lock
);
1320 delegation
= rcu_dereference(nfsi
->delegation
);
1321 if (!can_open_delegated(delegation
, fmode
)) {
1325 /* Save the delegation */
1326 nfs4_stateid_copy(&stateid
, &delegation
->stateid
);
1328 nfs_release_seqid(opendata
->o_arg
.seqid
);
1329 if (!opendata
->is_recover
) {
1330 ret
= nfs_may_open(state
->inode
, state
->owner
->so_cred
, open_mode
);
1336 /* Try to update the stateid using the delegation */
1337 if (update_open_stateid(state
, NULL
, &stateid
, fmode
))
1338 goto out_return_state
;
1341 return ERR_PTR(ret
);
1343 atomic_inc(&state
->count
);
1348 nfs4_opendata_check_deleg(struct nfs4_opendata
*data
, struct nfs4_state
*state
)
1350 struct nfs_client
*clp
= NFS_SERVER(state
->inode
)->nfs_client
;
1351 struct nfs_delegation
*delegation
;
1352 int delegation_flags
= 0;
1355 delegation
= rcu_dereference(NFS_I(state
->inode
)->delegation
);
1357 delegation_flags
= delegation
->flags
;
1359 if (data
->o_arg
.claim
== NFS4_OPEN_CLAIM_DELEGATE_CUR
) {
1360 pr_err_ratelimited("NFS: Broken NFSv4 server %s is "
1361 "returning a delegation for "
1362 "OPEN(CLAIM_DELEGATE_CUR)\n",
1364 } else if ((delegation_flags
& 1UL<<NFS_DELEGATION_NEED_RECLAIM
) == 0)
1365 nfs_inode_set_delegation(state
->inode
,
1366 data
->owner
->so_cred
,
1369 nfs_inode_reclaim_delegation(state
->inode
,
1370 data
->owner
->so_cred
,
1375 * Check the inode attributes against the CLAIM_PREVIOUS returned attributes
1376 * and update the nfs4_state.
1378 static struct nfs4_state
*
1379 _nfs4_opendata_reclaim_to_nfs4_state(struct nfs4_opendata
*data
)
1381 struct inode
*inode
= data
->state
->inode
;
1382 struct nfs4_state
*state
= data
->state
;
1385 if (!data
->rpc_done
) {
1386 if (data
->rpc_status
) {
1387 ret
= data
->rpc_status
;
1390 /* cached opens have already been processed */
1394 ret
= nfs_refresh_inode(inode
, &data
->f_attr
);
1398 if (data
->o_res
.delegation_type
!= 0)
1399 nfs4_opendata_check_deleg(data
, state
);
1401 update_open_stateid(state
, &data
->o_res
.stateid
, NULL
,
1403 atomic_inc(&state
->count
);
1407 return ERR_PTR(ret
);
1411 static struct nfs4_state
*
1412 _nfs4_opendata_to_nfs4_state(struct nfs4_opendata
*data
)
1414 struct inode
*inode
;
1415 struct nfs4_state
*state
= NULL
;
1418 if (!data
->rpc_done
) {
1419 state
= nfs4_try_open_cached(data
);
1424 if (!(data
->f_attr
.valid
& NFS_ATTR_FATTR
))
1426 inode
= nfs_fhget(data
->dir
->d_sb
, &data
->o_res
.fh
, &data
->f_attr
, data
->f_label
);
1427 ret
= PTR_ERR(inode
);
1431 state
= nfs4_get_open_state(inode
, data
->owner
);
1434 if (data
->o_res
.delegation_type
!= 0)
1435 nfs4_opendata_check_deleg(data
, state
);
1436 update_open_stateid(state
, &data
->o_res
.stateid
, NULL
,
1440 nfs_release_seqid(data
->o_arg
.seqid
);
1445 return ERR_PTR(ret
);
1448 static struct nfs4_state
*
1449 nfs4_opendata_to_nfs4_state(struct nfs4_opendata
*data
)
1451 if (data
->o_arg
.claim
== NFS4_OPEN_CLAIM_PREVIOUS
)
1452 return _nfs4_opendata_reclaim_to_nfs4_state(data
);
1453 return _nfs4_opendata_to_nfs4_state(data
);
1456 static struct nfs_open_context
*nfs4_state_find_open_context(struct nfs4_state
*state
)
1458 struct nfs_inode
*nfsi
= NFS_I(state
->inode
);
1459 struct nfs_open_context
*ctx
;
1461 spin_lock(&state
->inode
->i_lock
);
1462 list_for_each_entry(ctx
, &nfsi
->open_files
, list
) {
1463 if (ctx
->state
!= state
)
1465 get_nfs_open_context(ctx
);
1466 spin_unlock(&state
->inode
->i_lock
);
1469 spin_unlock(&state
->inode
->i_lock
);
1470 return ERR_PTR(-ENOENT
);
1473 static struct nfs4_opendata
*nfs4_open_recoverdata_alloc(struct nfs_open_context
*ctx
,
1474 struct nfs4_state
*state
, enum open_claim_type4 claim
)
1476 struct nfs4_opendata
*opendata
;
1478 opendata
= nfs4_opendata_alloc(ctx
->dentry
, state
->owner
, 0, 0,
1479 NULL
, NULL
, claim
, GFP_NOFS
);
1480 if (opendata
== NULL
)
1481 return ERR_PTR(-ENOMEM
);
1482 opendata
->state
= state
;
1483 atomic_inc(&state
->count
);
1487 static int nfs4_open_recover_helper(struct nfs4_opendata
*opendata
, fmode_t fmode
, struct nfs4_state
**res
)
1489 struct nfs4_state
*newstate
;
1492 opendata
->o_arg
.open_flags
= 0;
1493 opendata
->o_arg
.fmode
= fmode
;
1494 memset(&opendata
->o_res
, 0, sizeof(opendata
->o_res
));
1495 memset(&opendata
->c_res
, 0, sizeof(opendata
->c_res
));
1496 nfs4_init_opendata_res(opendata
);
1497 ret
= _nfs4_recover_proc_open(opendata
);
1500 newstate
= nfs4_opendata_to_nfs4_state(opendata
);
1501 if (IS_ERR(newstate
))
1502 return PTR_ERR(newstate
);
1503 nfs4_close_state(newstate
, fmode
);
1508 static int nfs4_open_recover(struct nfs4_opendata
*opendata
, struct nfs4_state
*state
)
1510 struct nfs4_state
*newstate
;
1513 /* Don't trigger recovery in nfs_test_and_clear_all_open_stateid */
1514 clear_bit(NFS_O_RDWR_STATE
, &state
->flags
);
1515 clear_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
1516 clear_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
1517 /* memory barrier prior to reading state->n_* */
1518 clear_bit(NFS_DELEGATED_STATE
, &state
->flags
);
1519 clear_bit(NFS_OPEN_STATE
, &state
->flags
);
1521 if (state
->n_rdwr
!= 0) {
1522 ret
= nfs4_open_recover_helper(opendata
, FMODE_READ
|FMODE_WRITE
, &newstate
);
1525 if (newstate
!= state
)
1528 if (state
->n_wronly
!= 0) {
1529 ret
= nfs4_open_recover_helper(opendata
, FMODE_WRITE
, &newstate
);
1532 if (newstate
!= state
)
1535 if (state
->n_rdonly
!= 0) {
1536 ret
= nfs4_open_recover_helper(opendata
, FMODE_READ
, &newstate
);
1539 if (newstate
!= state
)
1543 * We may have performed cached opens for all three recoveries.
1544 * Check if we need to update the current stateid.
1546 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) == 0 &&
1547 !nfs4_stateid_match(&state
->stateid
, &state
->open_stateid
)) {
1548 write_seqlock(&state
->seqlock
);
1549 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) == 0)
1550 nfs4_stateid_copy(&state
->stateid
, &state
->open_stateid
);
1551 write_sequnlock(&state
->seqlock
);
1558 * reclaim state on the server after a reboot.
1560 static int _nfs4_do_open_reclaim(struct nfs_open_context
*ctx
, struct nfs4_state
*state
)
1562 struct nfs_delegation
*delegation
;
1563 struct nfs4_opendata
*opendata
;
1564 fmode_t delegation_type
= 0;
1567 opendata
= nfs4_open_recoverdata_alloc(ctx
, state
,
1568 NFS4_OPEN_CLAIM_PREVIOUS
);
1569 if (IS_ERR(opendata
))
1570 return PTR_ERR(opendata
);
1572 delegation
= rcu_dereference(NFS_I(state
->inode
)->delegation
);
1573 if (delegation
!= NULL
&& test_bit(NFS_DELEGATION_NEED_RECLAIM
, &delegation
->flags
) != 0)
1574 delegation_type
= delegation
->type
;
1576 opendata
->o_arg
.u
.delegation_type
= delegation_type
;
1577 status
= nfs4_open_recover(opendata
, state
);
1578 nfs4_opendata_put(opendata
);
1582 static int nfs4_do_open_reclaim(struct nfs_open_context
*ctx
, struct nfs4_state
*state
)
1584 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
1585 struct nfs4_exception exception
= { };
1588 err
= _nfs4_do_open_reclaim(ctx
, state
);
1589 trace_nfs4_open_reclaim(ctx
, 0, err
);
1590 if (nfs4_clear_cap_atomic_open_v1(server
, err
, &exception
))
1592 if (err
!= -NFS4ERR_DELAY
)
1594 nfs4_handle_exception(server
, err
, &exception
);
1595 } while (exception
.retry
);
1599 static int nfs4_open_reclaim(struct nfs4_state_owner
*sp
, struct nfs4_state
*state
)
1601 struct nfs_open_context
*ctx
;
1604 ctx
= nfs4_state_find_open_context(state
);
1607 ret
= nfs4_do_open_reclaim(ctx
, state
);
1608 put_nfs_open_context(ctx
);
1612 static int nfs4_handle_delegation_recall_error(struct nfs_server
*server
, struct nfs4_state
*state
, const nfs4_stateid
*stateid
, int err
)
1616 printk(KERN_ERR
"NFS: %s: unhandled error "
1617 "%d.\n", __func__
, err
);
1622 case -NFS4ERR_BADSESSION
:
1623 case -NFS4ERR_BADSLOT
:
1624 case -NFS4ERR_BAD_HIGH_SLOT
:
1625 case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION
:
1626 case -NFS4ERR_DEADSESSION
:
1627 set_bit(NFS_DELEGATED_STATE
, &state
->flags
);
1628 nfs4_schedule_session_recovery(server
->nfs_client
->cl_session
, err
);
1630 case -NFS4ERR_STALE_CLIENTID
:
1631 case -NFS4ERR_STALE_STATEID
:
1632 set_bit(NFS_DELEGATED_STATE
, &state
->flags
);
1633 case -NFS4ERR_EXPIRED
:
1634 /* Don't recall a delegation if it was lost */
1635 nfs4_schedule_lease_recovery(server
->nfs_client
);
1637 case -NFS4ERR_MOVED
:
1638 nfs4_schedule_migration_recovery(server
);
1640 case -NFS4ERR_LEASE_MOVED
:
1641 nfs4_schedule_lease_moved_recovery(server
->nfs_client
);
1643 case -NFS4ERR_DELEG_REVOKED
:
1644 case -NFS4ERR_ADMIN_REVOKED
:
1645 case -NFS4ERR_BAD_STATEID
:
1646 case -NFS4ERR_OPENMODE
:
1647 nfs_inode_find_state_and_recover(state
->inode
,
1649 nfs4_schedule_stateid_recovery(server
, state
);
1651 case -NFS4ERR_DELAY
:
1652 case -NFS4ERR_GRACE
:
1653 set_bit(NFS_DELEGATED_STATE
, &state
->flags
);
1657 case -NFS4ERR_DENIED
:
1658 /* kill_proc(fl->fl_pid, SIGLOST, 1); */
1664 int nfs4_open_delegation_recall(struct nfs_open_context
*ctx
, struct nfs4_state
*state
, const nfs4_stateid
*stateid
)
1666 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
1667 struct nfs4_opendata
*opendata
;
1670 opendata
= nfs4_open_recoverdata_alloc(ctx
, state
,
1671 NFS4_OPEN_CLAIM_DELEG_CUR_FH
);
1672 if (IS_ERR(opendata
))
1673 return PTR_ERR(opendata
);
1674 nfs4_stateid_copy(&opendata
->o_arg
.u
.delegation
, stateid
);
1675 err
= nfs4_open_recover(opendata
, state
);
1676 nfs4_opendata_put(opendata
);
1677 return nfs4_handle_delegation_recall_error(server
, state
, stateid
, err
);
1680 static void nfs4_open_confirm_prepare(struct rpc_task
*task
, void *calldata
)
1682 struct nfs4_opendata
*data
= calldata
;
1684 nfs40_setup_sequence(data
->o_arg
.server
, &data
->c_arg
.seq_args
,
1685 &data
->c_res
.seq_res
, task
);
1688 static void nfs4_open_confirm_done(struct rpc_task
*task
, void *calldata
)
1690 struct nfs4_opendata
*data
= calldata
;
1692 nfs40_sequence_done(task
, &data
->c_res
.seq_res
);
1694 data
->rpc_status
= task
->tk_status
;
1695 if (data
->rpc_status
== 0) {
1696 nfs4_stateid_copy(&data
->o_res
.stateid
, &data
->c_res
.stateid
);
1697 nfs_confirm_seqid(&data
->owner
->so_seqid
, 0);
1698 renew_lease(data
->o_res
.server
, data
->timestamp
);
1703 static void nfs4_open_confirm_release(void *calldata
)
1705 struct nfs4_opendata
*data
= calldata
;
1706 struct nfs4_state
*state
= NULL
;
1708 /* If this request hasn't been cancelled, do nothing */
1709 if (data
->cancelled
== 0)
1711 /* In case of error, no cleanup! */
1712 if (!data
->rpc_done
)
1714 state
= nfs4_opendata_to_nfs4_state(data
);
1716 nfs4_close_state(state
, data
->o_arg
.fmode
);
1718 nfs4_opendata_put(data
);
1721 static const struct rpc_call_ops nfs4_open_confirm_ops
= {
1722 .rpc_call_prepare
= nfs4_open_confirm_prepare
,
1723 .rpc_call_done
= nfs4_open_confirm_done
,
1724 .rpc_release
= nfs4_open_confirm_release
,
1728 * Note: On error, nfs4_proc_open_confirm will free the struct nfs4_opendata
1730 static int _nfs4_proc_open_confirm(struct nfs4_opendata
*data
)
1732 struct nfs_server
*server
= NFS_SERVER(data
->dir
->d_inode
);
1733 struct rpc_task
*task
;
1734 struct rpc_message msg
= {
1735 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_OPEN_CONFIRM
],
1736 .rpc_argp
= &data
->c_arg
,
1737 .rpc_resp
= &data
->c_res
,
1738 .rpc_cred
= data
->owner
->so_cred
,
1740 struct rpc_task_setup task_setup_data
= {
1741 .rpc_client
= server
->client
,
1742 .rpc_message
= &msg
,
1743 .callback_ops
= &nfs4_open_confirm_ops
,
1744 .callback_data
= data
,
1745 .workqueue
= nfsiod_workqueue
,
1746 .flags
= RPC_TASK_ASYNC
,
1750 nfs4_init_sequence(&data
->c_arg
.seq_args
, &data
->c_res
.seq_res
, 1);
1751 kref_get(&data
->kref
);
1753 data
->rpc_status
= 0;
1754 data
->timestamp
= jiffies
;
1755 task
= rpc_run_task(&task_setup_data
);
1757 return PTR_ERR(task
);
1758 status
= nfs4_wait_for_completion_rpc_task(task
);
1760 data
->cancelled
= 1;
1763 status
= data
->rpc_status
;
1768 static void nfs4_open_prepare(struct rpc_task
*task
, void *calldata
)
1770 struct nfs4_opendata
*data
= calldata
;
1771 struct nfs4_state_owner
*sp
= data
->owner
;
1772 struct nfs_client
*clp
= sp
->so_server
->nfs_client
;
1774 if (nfs_wait_on_sequence(data
->o_arg
.seqid
, task
) != 0)
1777 * Check if we still need to send an OPEN call, or if we can use
1778 * a delegation instead.
1780 if (data
->state
!= NULL
) {
1781 struct nfs_delegation
*delegation
;
1783 if (can_open_cached(data
->state
, data
->o_arg
.fmode
, data
->o_arg
.open_flags
))
1786 delegation
= rcu_dereference(NFS_I(data
->state
->inode
)->delegation
);
1787 if (data
->o_arg
.claim
!= NFS4_OPEN_CLAIM_DELEGATE_CUR
&&
1788 data
->o_arg
.claim
!= NFS4_OPEN_CLAIM_DELEG_CUR_FH
&&
1789 can_open_delegated(delegation
, data
->o_arg
.fmode
))
1790 goto unlock_no_action
;
1793 /* Update client id. */
1794 data
->o_arg
.clientid
= clp
->cl_clientid
;
1795 switch (data
->o_arg
.claim
) {
1796 case NFS4_OPEN_CLAIM_PREVIOUS
:
1797 case NFS4_OPEN_CLAIM_DELEG_CUR_FH
:
1798 case NFS4_OPEN_CLAIM_DELEG_PREV_FH
:
1799 data
->o_arg
.open_bitmap
= &nfs4_open_noattr_bitmap
[0];
1800 case NFS4_OPEN_CLAIM_FH
:
1801 task
->tk_msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_OPEN_NOATTR
];
1802 nfs_copy_fh(&data
->o_res
.fh
, data
->o_arg
.fh
);
1804 data
->timestamp
= jiffies
;
1805 if (nfs4_setup_sequence(data
->o_arg
.server
,
1806 &data
->o_arg
.seq_args
,
1807 &data
->o_res
.seq_res
,
1809 nfs_release_seqid(data
->o_arg
.seqid
);
1811 /* Set the create mode (note dependency on the session type) */
1812 data
->o_arg
.createmode
= NFS4_CREATE_UNCHECKED
;
1813 if (data
->o_arg
.open_flags
& O_EXCL
) {
1814 data
->o_arg
.createmode
= NFS4_CREATE_EXCLUSIVE
;
1815 if (nfs4_has_persistent_session(clp
))
1816 data
->o_arg
.createmode
= NFS4_CREATE_GUARDED
;
1817 else if (clp
->cl_mvops
->minor_version
> 0)
1818 data
->o_arg
.createmode
= NFS4_CREATE_EXCLUSIVE4_1
;
1824 task
->tk_action
= NULL
;
1826 nfs4_sequence_done(task
, &data
->o_res
.seq_res
);
1829 static void nfs4_open_done(struct rpc_task
*task
, void *calldata
)
1831 struct nfs4_opendata
*data
= calldata
;
1833 data
->rpc_status
= task
->tk_status
;
1835 if (!nfs4_sequence_done(task
, &data
->o_res
.seq_res
))
1838 if (task
->tk_status
== 0) {
1839 if (data
->o_res
.f_attr
->valid
& NFS_ATTR_FATTR_TYPE
) {
1840 switch (data
->o_res
.f_attr
->mode
& S_IFMT
) {
1844 data
->rpc_status
= -ELOOP
;
1847 data
->rpc_status
= -EISDIR
;
1850 data
->rpc_status
= -ENOTDIR
;
1853 renew_lease(data
->o_res
.server
, data
->timestamp
);
1854 if (!(data
->o_res
.rflags
& NFS4_OPEN_RESULT_CONFIRM
))
1855 nfs_confirm_seqid(&data
->owner
->so_seqid
, 0);
1860 static void nfs4_open_release(void *calldata
)
1862 struct nfs4_opendata
*data
= calldata
;
1863 struct nfs4_state
*state
= NULL
;
1865 /* If this request hasn't been cancelled, do nothing */
1866 if (data
->cancelled
== 0)
1868 /* In case of error, no cleanup! */
1869 if (data
->rpc_status
!= 0 || !data
->rpc_done
)
1871 /* In case we need an open_confirm, no cleanup! */
1872 if (data
->o_res
.rflags
& NFS4_OPEN_RESULT_CONFIRM
)
1874 state
= nfs4_opendata_to_nfs4_state(data
);
1876 nfs4_close_state(state
, data
->o_arg
.fmode
);
1878 nfs4_opendata_put(data
);
1881 static const struct rpc_call_ops nfs4_open_ops
= {
1882 .rpc_call_prepare
= nfs4_open_prepare
,
1883 .rpc_call_done
= nfs4_open_done
,
1884 .rpc_release
= nfs4_open_release
,
1887 static int nfs4_run_open_task(struct nfs4_opendata
*data
, int isrecover
)
1889 struct inode
*dir
= data
->dir
->d_inode
;
1890 struct nfs_server
*server
= NFS_SERVER(dir
);
1891 struct nfs_openargs
*o_arg
= &data
->o_arg
;
1892 struct nfs_openres
*o_res
= &data
->o_res
;
1893 struct rpc_task
*task
;
1894 struct rpc_message msg
= {
1895 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_OPEN
],
1898 .rpc_cred
= data
->owner
->so_cred
,
1900 struct rpc_task_setup task_setup_data
= {
1901 .rpc_client
= server
->client
,
1902 .rpc_message
= &msg
,
1903 .callback_ops
= &nfs4_open_ops
,
1904 .callback_data
= data
,
1905 .workqueue
= nfsiod_workqueue
,
1906 .flags
= RPC_TASK_ASYNC
,
1910 nfs4_init_sequence(&o_arg
->seq_args
, &o_res
->seq_res
, 1);
1911 kref_get(&data
->kref
);
1913 data
->rpc_status
= 0;
1914 data
->cancelled
= 0;
1915 data
->is_recover
= 0;
1917 nfs4_set_sequence_privileged(&o_arg
->seq_args
);
1918 data
->is_recover
= 1;
1920 task
= rpc_run_task(&task_setup_data
);
1922 return PTR_ERR(task
);
1923 status
= nfs4_wait_for_completion_rpc_task(task
);
1925 data
->cancelled
= 1;
1928 status
= data
->rpc_status
;
1934 static int _nfs4_recover_proc_open(struct nfs4_opendata
*data
)
1936 struct inode
*dir
= data
->dir
->d_inode
;
1937 struct nfs_openres
*o_res
= &data
->o_res
;
1940 status
= nfs4_run_open_task(data
, 1);
1941 if (status
!= 0 || !data
->rpc_done
)
1944 nfs_fattr_map_and_free_names(NFS_SERVER(dir
), &data
->f_attr
);
1946 if (o_res
->rflags
& NFS4_OPEN_RESULT_CONFIRM
) {
1947 status
= _nfs4_proc_open_confirm(data
);
1956 * Additional permission checks in order to distinguish between an
1957 * open for read, and an open for execute. This works around the
1958 * fact that NFSv4 OPEN treats read and execute permissions as being
1960 * Note that in the non-execute case, we want to turn off permission
1961 * checking if we just created a new file (POSIX open() semantics).
1963 static int nfs4_opendata_access(struct rpc_cred
*cred
,
1964 struct nfs4_opendata
*opendata
,
1965 struct nfs4_state
*state
, fmode_t fmode
,
1968 struct nfs_access_entry cache
;
1971 /* access call failed or for some reason the server doesn't
1972 * support any access modes -- defer access call until later */
1973 if (opendata
->o_res
.access_supported
== 0)
1978 * Use openflags to check for exec, because fmode won't
1979 * always have FMODE_EXEC set when file open for exec.
1981 if (openflags
& __FMODE_EXEC
) {
1982 /* ONLY check for exec rights */
1984 } else if ((fmode
& FMODE_READ
) && !opendata
->file_created
)
1988 cache
.jiffies
= jiffies
;
1989 nfs_access_set_mask(&cache
, opendata
->o_res
.access_result
);
1990 nfs_access_add_cache(state
->inode
, &cache
);
1992 if ((mask
& ~cache
.mask
& (MAY_READ
| MAY_EXEC
)) == 0)
1995 /* even though OPEN succeeded, access is denied. Close the file */
1996 nfs4_close_state(state
, fmode
);
2001 * Note: On error, nfs4_proc_open will free the struct nfs4_opendata
2003 static int _nfs4_proc_open(struct nfs4_opendata
*data
)
2005 struct inode
*dir
= data
->dir
->d_inode
;
2006 struct nfs_server
*server
= NFS_SERVER(dir
);
2007 struct nfs_openargs
*o_arg
= &data
->o_arg
;
2008 struct nfs_openres
*o_res
= &data
->o_res
;
2011 status
= nfs4_run_open_task(data
, 0);
2012 if (!data
->rpc_done
)
2015 if (status
== -NFS4ERR_BADNAME
&&
2016 !(o_arg
->open_flags
& O_CREAT
))
2021 nfs_fattr_map_and_free_names(server
, &data
->f_attr
);
2023 if (o_arg
->open_flags
& O_CREAT
) {
2024 update_changeattr(dir
, &o_res
->cinfo
);
2025 if (o_arg
->open_flags
& O_EXCL
)
2026 data
->file_created
= 1;
2027 else if (o_res
->cinfo
.before
!= o_res
->cinfo
.after
)
2028 data
->file_created
= 1;
2030 if ((o_res
->rflags
& NFS4_OPEN_RESULT_LOCKTYPE_POSIX
) == 0)
2031 server
->caps
&= ~NFS_CAP_POSIX_LOCK
;
2032 if(o_res
->rflags
& NFS4_OPEN_RESULT_CONFIRM
) {
2033 status
= _nfs4_proc_open_confirm(data
);
2037 if (!(o_res
->f_attr
->valid
& NFS_ATTR_FATTR
))
2038 nfs4_proc_getattr(server
, &o_res
->fh
, o_res
->f_attr
, o_res
->f_label
);
2042 static int nfs4_recover_expired_lease(struct nfs_server
*server
)
2044 return nfs4_client_recover_expired_lease(server
->nfs_client
);
2049 * reclaim state on the server after a network partition.
2050 * Assumes caller holds the appropriate lock
2052 static int _nfs4_open_expired(struct nfs_open_context
*ctx
, struct nfs4_state
*state
)
2054 struct nfs4_opendata
*opendata
;
2057 opendata
= nfs4_open_recoverdata_alloc(ctx
, state
,
2058 NFS4_OPEN_CLAIM_FH
);
2059 if (IS_ERR(opendata
))
2060 return PTR_ERR(opendata
);
2061 ret
= nfs4_open_recover(opendata
, state
);
2063 d_drop(ctx
->dentry
);
2064 nfs4_opendata_put(opendata
);
2068 static int nfs4_do_open_expired(struct nfs_open_context
*ctx
, struct nfs4_state
*state
)
2070 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
2071 struct nfs4_exception exception
= { };
2075 err
= _nfs4_open_expired(ctx
, state
);
2076 trace_nfs4_open_expired(ctx
, 0, err
);
2077 if (nfs4_clear_cap_atomic_open_v1(server
, err
, &exception
))
2082 case -NFS4ERR_GRACE
:
2083 case -NFS4ERR_DELAY
:
2084 nfs4_handle_exception(server
, err
, &exception
);
2087 } while (exception
.retry
);
2092 static int nfs4_open_expired(struct nfs4_state_owner
*sp
, struct nfs4_state
*state
)
2094 struct nfs_open_context
*ctx
;
2097 ctx
= nfs4_state_find_open_context(state
);
2100 ret
= nfs4_do_open_expired(ctx
, state
);
2101 put_nfs_open_context(ctx
);
2105 static void nfs_finish_clear_delegation_stateid(struct nfs4_state
*state
)
2107 nfs_remove_bad_delegation(state
->inode
);
2108 write_seqlock(&state
->seqlock
);
2109 nfs4_stateid_copy(&state
->stateid
, &state
->open_stateid
);
2110 write_sequnlock(&state
->seqlock
);
2111 clear_bit(NFS_DELEGATED_STATE
, &state
->flags
);
2114 static void nfs40_clear_delegation_stateid(struct nfs4_state
*state
)
2116 if (rcu_access_pointer(NFS_I(state
->inode
)->delegation
) != NULL
)
2117 nfs_finish_clear_delegation_stateid(state
);
2120 static int nfs40_open_expired(struct nfs4_state_owner
*sp
, struct nfs4_state
*state
)
2122 /* NFSv4.0 doesn't allow for delegation recovery on open expire */
2123 nfs40_clear_delegation_stateid(state
);
2124 return nfs4_open_expired(sp
, state
);
2127 #if defined(CONFIG_NFS_V4_1)
2128 static void nfs41_check_delegation_stateid(struct nfs4_state
*state
)
2130 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
2131 nfs4_stateid stateid
;
2132 struct nfs_delegation
*delegation
;
2133 struct rpc_cred
*cred
;
2136 /* Get the delegation credential for use by test/free_stateid */
2138 delegation
= rcu_dereference(NFS_I(state
->inode
)->delegation
);
2139 if (delegation
== NULL
) {
2144 nfs4_stateid_copy(&stateid
, &delegation
->stateid
);
2145 cred
= get_rpccred(delegation
->cred
);
2147 status
= nfs41_test_stateid(server
, &stateid
, cred
);
2148 trace_nfs4_test_delegation_stateid(state
, NULL
, status
);
2150 if (status
!= NFS_OK
) {
2151 /* Free the stateid unless the server explicitly
2152 * informs us the stateid is unrecognized. */
2153 if (status
!= -NFS4ERR_BAD_STATEID
)
2154 nfs41_free_stateid(server
, &stateid
, cred
);
2155 nfs_finish_clear_delegation_stateid(state
);
2162 * nfs41_check_open_stateid - possibly free an open stateid
2164 * @state: NFSv4 state for an inode
2166 * Returns NFS_OK if recovery for this stateid is now finished.
2167 * Otherwise a negative NFS4ERR value is returned.
2169 static int nfs41_check_open_stateid(struct nfs4_state
*state
)
2171 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
2172 nfs4_stateid
*stateid
= &state
->open_stateid
;
2173 struct rpc_cred
*cred
= state
->owner
->so_cred
;
2176 /* If a state reset has been done, test_stateid is unneeded */
2177 if ((test_bit(NFS_O_RDONLY_STATE
, &state
->flags
) == 0) &&
2178 (test_bit(NFS_O_WRONLY_STATE
, &state
->flags
) == 0) &&
2179 (test_bit(NFS_O_RDWR_STATE
, &state
->flags
) == 0))
2180 return -NFS4ERR_BAD_STATEID
;
2182 status
= nfs41_test_stateid(server
, stateid
, cred
);
2183 trace_nfs4_test_open_stateid(state
, NULL
, status
);
2184 if (status
!= NFS_OK
) {
2185 /* Free the stateid unless the server explicitly
2186 * informs us the stateid is unrecognized. */
2187 if (status
!= -NFS4ERR_BAD_STATEID
)
2188 nfs41_free_stateid(server
, stateid
, cred
);
2190 clear_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
2191 clear_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
2192 clear_bit(NFS_O_RDWR_STATE
, &state
->flags
);
2193 clear_bit(NFS_OPEN_STATE
, &state
->flags
);
2198 static int nfs41_open_expired(struct nfs4_state_owner
*sp
, struct nfs4_state
*state
)
2202 nfs41_check_delegation_stateid(state
);
2203 status
= nfs41_check_open_stateid(state
);
2204 if (status
!= NFS_OK
)
2205 status
= nfs4_open_expired(sp
, state
);
2211 * on an EXCLUSIVE create, the server should send back a bitmask with FATTR4-*
2212 * fields corresponding to attributes that were used to store the verifier.
2213 * Make sure we clobber those fields in the later setattr call
2215 static inline void nfs4_exclusive_attrset(struct nfs4_opendata
*opendata
, struct iattr
*sattr
)
2217 if ((opendata
->o_res
.attrset
[1] & FATTR4_WORD1_TIME_ACCESS
) &&
2218 !(sattr
->ia_valid
& ATTR_ATIME_SET
))
2219 sattr
->ia_valid
|= ATTR_ATIME
;
2221 if ((opendata
->o_res
.attrset
[1] & FATTR4_WORD1_TIME_MODIFY
) &&
2222 !(sattr
->ia_valid
& ATTR_MTIME_SET
))
2223 sattr
->ia_valid
|= ATTR_MTIME
;
2226 static int _nfs4_open_and_get_state(struct nfs4_opendata
*opendata
,
2229 struct nfs_open_context
*ctx
)
2231 struct nfs4_state_owner
*sp
= opendata
->owner
;
2232 struct nfs_server
*server
= sp
->so_server
;
2233 struct dentry
*dentry
;
2234 struct nfs4_state
*state
;
2238 seq
= raw_seqcount_begin(&sp
->so_reclaim_seqcount
);
2240 ret
= _nfs4_proc_open(opendata
);
2244 state
= nfs4_opendata_to_nfs4_state(opendata
);
2245 ret
= PTR_ERR(state
);
2248 if (server
->caps
& NFS_CAP_POSIX_LOCK
)
2249 set_bit(NFS_STATE_POSIX_LOCKS
, &state
->flags
);
2251 dentry
= opendata
->dentry
;
2252 if (dentry
->d_inode
== NULL
) {
2253 /* FIXME: Is this d_drop() ever needed? */
2255 dentry
= d_add_unique(dentry
, igrab(state
->inode
));
2256 if (dentry
== NULL
) {
2257 dentry
= opendata
->dentry
;
2258 } else if (dentry
!= ctx
->dentry
) {
2260 ctx
->dentry
= dget(dentry
);
2262 nfs_set_verifier(dentry
,
2263 nfs_save_change_attribute(opendata
->dir
->d_inode
));
2266 ret
= nfs4_opendata_access(sp
->so_cred
, opendata
, state
, fmode
, flags
);
2271 if (dentry
->d_inode
== state
->inode
) {
2272 nfs_inode_attach_open_context(ctx
);
2273 if (read_seqcount_retry(&sp
->so_reclaim_seqcount
, seq
))
2274 nfs4_schedule_stateid_recovery(server
, state
);
2281 * Returns a referenced nfs4_state
2283 static int _nfs4_do_open(struct inode
*dir
,
2284 struct nfs_open_context
*ctx
,
2286 struct iattr
*sattr
,
2287 struct nfs4_label
*label
,
2290 struct nfs4_state_owner
*sp
;
2291 struct nfs4_state
*state
= NULL
;
2292 struct nfs_server
*server
= NFS_SERVER(dir
);
2293 struct nfs4_opendata
*opendata
;
2294 struct dentry
*dentry
= ctx
->dentry
;
2295 struct rpc_cred
*cred
= ctx
->cred
;
2296 struct nfs4_threshold
**ctx_th
= &ctx
->mdsthreshold
;
2297 fmode_t fmode
= ctx
->mode
& (FMODE_READ
|FMODE_WRITE
|FMODE_EXEC
);
2298 enum open_claim_type4 claim
= NFS4_OPEN_CLAIM_NULL
;
2299 struct nfs4_label
*olabel
= NULL
;
2302 /* Protect against reboot recovery conflicts */
2304 sp
= nfs4_get_state_owner(server
, cred
, GFP_KERNEL
);
2306 dprintk("nfs4_do_open: nfs4_get_state_owner failed!\n");
2309 status
= nfs4_recover_expired_lease(server
);
2311 goto err_put_state_owner
;
2312 if (dentry
->d_inode
!= NULL
)
2313 nfs4_return_incompatible_delegation(dentry
->d_inode
, fmode
);
2315 if (dentry
->d_inode
)
2316 claim
= NFS4_OPEN_CLAIM_FH
;
2317 opendata
= nfs4_opendata_alloc(dentry
, sp
, fmode
, flags
, sattr
,
2318 label
, claim
, GFP_KERNEL
);
2319 if (opendata
== NULL
)
2320 goto err_put_state_owner
;
2323 olabel
= nfs4_label_alloc(server
, GFP_KERNEL
);
2324 if (IS_ERR(olabel
)) {
2325 status
= PTR_ERR(olabel
);
2326 goto err_opendata_put
;
2330 if (server
->attr_bitmask
[2] & FATTR4_WORD2_MDSTHRESHOLD
) {
2331 if (!opendata
->f_attr
.mdsthreshold
) {
2332 opendata
->f_attr
.mdsthreshold
= pnfs_mdsthreshold_alloc();
2333 if (!opendata
->f_attr
.mdsthreshold
)
2334 goto err_free_label
;
2336 opendata
->o_arg
.open_bitmap
= &nfs4_pnfs_open_bitmap
[0];
2338 if (dentry
->d_inode
!= NULL
)
2339 opendata
->state
= nfs4_get_open_state(dentry
->d_inode
, sp
);
2341 status
= _nfs4_open_and_get_state(opendata
, fmode
, flags
, ctx
);
2343 goto err_free_label
;
2346 if ((opendata
->o_arg
.open_flags
& O_EXCL
) &&
2347 (opendata
->o_arg
.createmode
!= NFS4_CREATE_GUARDED
)) {
2348 nfs4_exclusive_attrset(opendata
, sattr
);
2350 nfs_fattr_init(opendata
->o_res
.f_attr
);
2351 status
= nfs4_do_setattr(state
->inode
, cred
,
2352 opendata
->o_res
.f_attr
, sattr
,
2353 state
, label
, olabel
);
2355 nfs_setattr_update_inode(state
->inode
, sattr
);
2356 nfs_post_op_update_inode(state
->inode
, opendata
->o_res
.f_attr
);
2357 nfs_setsecurity(state
->inode
, opendata
->o_res
.f_attr
, olabel
);
2360 if (opendata
->file_created
)
2361 *opened
|= FILE_CREATED
;
2363 if (pnfs_use_threshold(ctx_th
, opendata
->f_attr
.mdsthreshold
, server
)) {
2364 *ctx_th
= opendata
->f_attr
.mdsthreshold
;
2365 opendata
->f_attr
.mdsthreshold
= NULL
;
2368 nfs4_label_free(olabel
);
2370 nfs4_opendata_put(opendata
);
2371 nfs4_put_state_owner(sp
);
2374 nfs4_label_free(olabel
);
2376 nfs4_opendata_put(opendata
);
2377 err_put_state_owner
:
2378 nfs4_put_state_owner(sp
);
2384 static struct nfs4_state
*nfs4_do_open(struct inode
*dir
,
2385 struct nfs_open_context
*ctx
,
2387 struct iattr
*sattr
,
2388 struct nfs4_label
*label
,
2391 struct nfs_server
*server
= NFS_SERVER(dir
);
2392 struct nfs4_exception exception
= { };
2393 struct nfs4_state
*res
;
2397 status
= _nfs4_do_open(dir
, ctx
, flags
, sattr
, label
, opened
);
2399 trace_nfs4_open_file(ctx
, flags
, status
);
2402 /* NOTE: BAD_SEQID means the server and client disagree about the
2403 * book-keeping w.r.t. state-changing operations
2404 * (OPEN/CLOSE/LOCK/LOCKU...)
2405 * It is actually a sign of a bug on the client or on the server.
2407 * If we receive a BAD_SEQID error in the particular case of
2408 * doing an OPEN, we assume that nfs_increment_open_seqid() will
2409 * have unhashed the old state_owner for us, and that we can
2410 * therefore safely retry using a new one. We should still warn
2411 * the user though...
2413 if (status
== -NFS4ERR_BAD_SEQID
) {
2414 pr_warn_ratelimited("NFS: v4 server %s "
2415 " returned a bad sequence-id error!\n",
2416 NFS_SERVER(dir
)->nfs_client
->cl_hostname
);
2417 exception
.retry
= 1;
2421 * BAD_STATEID on OPEN means that the server cancelled our
2422 * state before it received the OPEN_CONFIRM.
2423 * Recover by retrying the request as per the discussion
2424 * on Page 181 of RFC3530.
2426 if (status
== -NFS4ERR_BAD_STATEID
) {
2427 exception
.retry
= 1;
2430 if (status
== -EAGAIN
) {
2431 /* We must have found a delegation */
2432 exception
.retry
= 1;
2435 if (nfs4_clear_cap_atomic_open_v1(server
, status
, &exception
))
2437 res
= ERR_PTR(nfs4_handle_exception(server
,
2438 status
, &exception
));
2439 } while (exception
.retry
);
2443 static int _nfs4_do_setattr(struct inode
*inode
, struct rpc_cred
*cred
,
2444 struct nfs_fattr
*fattr
, struct iattr
*sattr
,
2445 struct nfs4_state
*state
, struct nfs4_label
*ilabel
,
2446 struct nfs4_label
*olabel
)
2448 struct nfs_server
*server
= NFS_SERVER(inode
);
2449 struct nfs_setattrargs arg
= {
2450 .fh
= NFS_FH(inode
),
2453 .bitmask
= server
->attr_bitmask
,
2456 struct nfs_setattrres res
= {
2461 struct rpc_message msg
= {
2462 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETATTR
],
2467 unsigned long timestamp
= jiffies
;
2472 arg
.bitmask
= nfs4_bitmask(server
, ilabel
);
2474 arg
.bitmask
= nfs4_bitmask(server
, olabel
);
2476 nfs_fattr_init(fattr
);
2478 /* Servers should only apply open mode checks for file size changes */
2479 truncate
= (sattr
->ia_valid
& ATTR_SIZE
) ? true : false;
2480 fmode
= truncate
? FMODE_WRITE
: FMODE_READ
;
2482 if (nfs4_copy_delegation_stateid(&arg
.stateid
, inode
, fmode
)) {
2483 /* Use that stateid */
2484 } else if (truncate
&& state
!= NULL
) {
2485 struct nfs_lockowner lockowner
= {
2486 .l_owner
= current
->files
,
2487 .l_pid
= current
->tgid
,
2489 if (!nfs4_valid_open_stateid(state
))
2491 if (nfs4_select_rw_stateid(&arg
.stateid
, state
, FMODE_WRITE
,
2492 &lockowner
) == -EIO
)
2495 nfs4_stateid_copy(&arg
.stateid
, &zero_stateid
);
2497 status
= nfs4_call_sync(server
->client
, server
, &msg
, &arg
.seq_args
, &res
.seq_res
, 1);
2498 if (status
== 0 && state
!= NULL
)
2499 renew_lease(server
, timestamp
);
2503 static int nfs4_do_setattr(struct inode
*inode
, struct rpc_cred
*cred
,
2504 struct nfs_fattr
*fattr
, struct iattr
*sattr
,
2505 struct nfs4_state
*state
, struct nfs4_label
*ilabel
,
2506 struct nfs4_label
*olabel
)
2508 struct nfs_server
*server
= NFS_SERVER(inode
);
2509 struct nfs4_exception exception
= {
2515 err
= _nfs4_do_setattr(inode
, cred
, fattr
, sattr
, state
, ilabel
, olabel
);
2516 trace_nfs4_setattr(inode
, err
);
2518 case -NFS4ERR_OPENMODE
:
2519 if (!(sattr
->ia_valid
& ATTR_SIZE
)) {
2520 pr_warn_once("NFSv4: server %s is incorrectly "
2521 "applying open mode checks to "
2522 "a SETATTR that is not "
2523 "changing file size.\n",
2524 server
->nfs_client
->cl_hostname
);
2526 if (state
&& !(state
->state
& FMODE_WRITE
)) {
2528 if (sattr
->ia_valid
& ATTR_OPEN
)
2533 err
= nfs4_handle_exception(server
, err
, &exception
);
2534 } while (exception
.retry
);
2539 struct nfs4_closedata
{
2540 struct inode
*inode
;
2541 struct nfs4_state
*state
;
2542 struct nfs_closeargs arg
;
2543 struct nfs_closeres res
;
2544 struct nfs_fattr fattr
;
2545 unsigned long timestamp
;
2550 static void nfs4_free_closedata(void *data
)
2552 struct nfs4_closedata
*calldata
= data
;
2553 struct nfs4_state_owner
*sp
= calldata
->state
->owner
;
2554 struct super_block
*sb
= calldata
->state
->inode
->i_sb
;
2557 pnfs_roc_release(calldata
->state
->inode
);
2558 nfs4_put_open_state(calldata
->state
);
2559 nfs_free_seqid(calldata
->arg
.seqid
);
2560 nfs4_put_state_owner(sp
);
2561 nfs_sb_deactive(sb
);
2565 static void nfs4_close_done(struct rpc_task
*task
, void *data
)
2567 struct nfs4_closedata
*calldata
= data
;
2568 struct nfs4_state
*state
= calldata
->state
;
2569 struct nfs_server
*server
= NFS_SERVER(calldata
->inode
);
2570 nfs4_stateid
*res_stateid
= NULL
;
2572 dprintk("%s: begin!\n", __func__
);
2573 if (!nfs4_sequence_done(task
, &calldata
->res
.seq_res
))
2575 trace_nfs4_close(state
, &calldata
->arg
, &calldata
->res
, task
->tk_status
);
2576 /* hmm. we are done with the inode, and in the process of freeing
2577 * the state_owner. we keep this around to process errors
2579 switch (task
->tk_status
) {
2581 res_stateid
= &calldata
->res
.stateid
;
2582 if (calldata
->arg
.fmode
== 0 && calldata
->roc
)
2583 pnfs_roc_set_barrier(state
->inode
,
2584 calldata
->roc_barrier
);
2585 renew_lease(server
, calldata
->timestamp
);
2587 case -NFS4ERR_ADMIN_REVOKED
:
2588 case -NFS4ERR_STALE_STATEID
:
2589 case -NFS4ERR_OLD_STATEID
:
2590 case -NFS4ERR_BAD_STATEID
:
2591 case -NFS4ERR_EXPIRED
:
2592 if (calldata
->arg
.fmode
== 0)
2595 if (nfs4_async_handle_error(task
, server
, state
, NULL
) == -EAGAIN
) {
2596 rpc_restart_call_prepare(task
);
2600 nfs_clear_open_stateid(state
, res_stateid
, calldata
->arg
.fmode
);
2602 nfs_release_seqid(calldata
->arg
.seqid
);
2603 nfs_refresh_inode(calldata
->inode
, calldata
->res
.fattr
);
2604 dprintk("%s: done, ret = %d!\n", __func__
, task
->tk_status
);
2607 static void nfs4_close_prepare(struct rpc_task
*task
, void *data
)
2609 struct nfs4_closedata
*calldata
= data
;
2610 struct nfs4_state
*state
= calldata
->state
;
2611 struct inode
*inode
= calldata
->inode
;
2612 bool is_rdonly
, is_wronly
, is_rdwr
;
2615 dprintk("%s: begin!\n", __func__
);
2616 if (nfs_wait_on_sequence(calldata
->arg
.seqid
, task
) != 0)
2619 task
->tk_msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_OPEN_DOWNGRADE
];
2620 spin_lock(&state
->owner
->so_lock
);
2621 is_rdwr
= test_bit(NFS_O_RDWR_STATE
, &state
->flags
);
2622 is_rdonly
= test_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
2623 is_wronly
= test_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
2624 /* Calculate the change in open mode */
2625 calldata
->arg
.fmode
= 0;
2626 if (state
->n_rdwr
== 0) {
2627 if (state
->n_rdonly
== 0)
2628 call_close
|= is_rdonly
;
2630 calldata
->arg
.fmode
|= FMODE_READ
;
2631 if (state
->n_wronly
== 0)
2632 call_close
|= is_wronly
;
2634 calldata
->arg
.fmode
|= FMODE_WRITE
;
2636 calldata
->arg
.fmode
|= FMODE_READ
|FMODE_WRITE
;
2638 if (calldata
->arg
.fmode
== 0)
2639 call_close
|= is_rdwr
;
2641 if (!nfs4_valid_open_stateid(state
))
2643 spin_unlock(&state
->owner
->so_lock
);
2646 /* Note: exit _without_ calling nfs4_close_done */
2650 if (calldata
->arg
.fmode
== 0) {
2651 task
->tk_msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_CLOSE
];
2652 if (calldata
->roc
&&
2653 pnfs_roc_drain(inode
, &calldata
->roc_barrier
, task
)) {
2654 nfs_release_seqid(calldata
->arg
.seqid
);
2659 nfs_fattr_init(calldata
->res
.fattr
);
2660 calldata
->timestamp
= jiffies
;
2661 if (nfs4_setup_sequence(NFS_SERVER(inode
),
2662 &calldata
->arg
.seq_args
,
2663 &calldata
->res
.seq_res
,
2665 nfs_release_seqid(calldata
->arg
.seqid
);
2666 dprintk("%s: done!\n", __func__
);
2669 task
->tk_action
= NULL
;
2671 nfs4_sequence_done(task
, &calldata
->res
.seq_res
);
2674 static const struct rpc_call_ops nfs4_close_ops
= {
2675 .rpc_call_prepare
= nfs4_close_prepare
,
2676 .rpc_call_done
= nfs4_close_done
,
2677 .rpc_release
= nfs4_free_closedata
,
2680 static bool nfs4_state_has_opener(struct nfs4_state
*state
)
2682 /* first check existing openers */
2683 if (test_bit(NFS_O_RDONLY_STATE
, &state
->flags
) != 0 &&
2684 state
->n_rdonly
!= 0)
2687 if (test_bit(NFS_O_WRONLY_STATE
, &state
->flags
) != 0 &&
2688 state
->n_wronly
!= 0)
2691 if (test_bit(NFS_O_RDWR_STATE
, &state
->flags
) != 0 &&
2698 static bool nfs4_roc(struct inode
*inode
)
2700 struct nfs_inode
*nfsi
= NFS_I(inode
);
2701 struct nfs_open_context
*ctx
;
2702 struct nfs4_state
*state
;
2704 spin_lock(&inode
->i_lock
);
2705 list_for_each_entry(ctx
, &nfsi
->open_files
, list
) {
2709 if (nfs4_state_has_opener(state
)) {
2710 spin_unlock(&inode
->i_lock
);
2714 spin_unlock(&inode
->i_lock
);
2716 if (nfs4_check_delegation(inode
, FMODE_READ
))
2719 return pnfs_roc(inode
);
2723 * It is possible for data to be read/written from a mem-mapped file
2724 * after the sys_close call (which hits the vfs layer as a flush).
2725 * This means that we can't safely call nfsv4 close on a file until
2726 * the inode is cleared. This in turn means that we are not good
2727 * NFSv4 citizens - we do not indicate to the server to update the file's
2728 * share state even when we are done with one of the three share
2729 * stateid's in the inode.
2731 * NOTE: Caller must be holding the sp->so_owner semaphore!
2733 int nfs4_do_close(struct nfs4_state
*state
, gfp_t gfp_mask
, int wait
)
2735 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
2736 struct nfs4_closedata
*calldata
;
2737 struct nfs4_state_owner
*sp
= state
->owner
;
2738 struct rpc_task
*task
;
2739 struct rpc_message msg
= {
2740 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_CLOSE
],
2741 .rpc_cred
= state
->owner
->so_cred
,
2743 struct rpc_task_setup task_setup_data
= {
2744 .rpc_client
= server
->client
,
2745 .rpc_message
= &msg
,
2746 .callback_ops
= &nfs4_close_ops
,
2747 .workqueue
= nfsiod_workqueue
,
2748 .flags
= RPC_TASK_ASYNC
,
2750 int status
= -ENOMEM
;
2752 nfs4_state_protect(server
->nfs_client
, NFS_SP4_MACH_CRED_CLEANUP
,
2753 &task_setup_data
.rpc_client
, &msg
);
2755 calldata
= kzalloc(sizeof(*calldata
), gfp_mask
);
2756 if (calldata
== NULL
)
2758 nfs4_init_sequence(&calldata
->arg
.seq_args
, &calldata
->res
.seq_res
, 1);
2759 calldata
->inode
= state
->inode
;
2760 calldata
->state
= state
;
2761 calldata
->arg
.fh
= NFS_FH(state
->inode
);
2762 calldata
->arg
.stateid
= &state
->open_stateid
;
2763 /* Serialization for the sequence id */
2764 calldata
->arg
.seqid
= nfs_alloc_seqid(&state
->owner
->so_seqid
, gfp_mask
);
2765 if (calldata
->arg
.seqid
== NULL
)
2766 goto out_free_calldata
;
2767 calldata
->arg
.fmode
= 0;
2768 calldata
->arg
.bitmask
= server
->cache_consistency_bitmask
;
2769 calldata
->res
.fattr
= &calldata
->fattr
;
2770 calldata
->res
.seqid
= calldata
->arg
.seqid
;
2771 calldata
->res
.server
= server
;
2772 calldata
->roc
= nfs4_roc(state
->inode
);
2773 nfs_sb_active(calldata
->inode
->i_sb
);
2775 msg
.rpc_argp
= &calldata
->arg
;
2776 msg
.rpc_resp
= &calldata
->res
;
2777 task_setup_data
.callback_data
= calldata
;
2778 task
= rpc_run_task(&task_setup_data
);
2780 return PTR_ERR(task
);
2783 status
= rpc_wait_for_completion_task(task
);
2789 nfs4_put_open_state(state
);
2790 nfs4_put_state_owner(sp
);
2794 static struct inode
*
2795 nfs4_atomic_open(struct inode
*dir
, struct nfs_open_context
*ctx
,
2796 int open_flags
, struct iattr
*attr
, int *opened
)
2798 struct nfs4_state
*state
;
2799 struct nfs4_label l
= {0, 0, 0, NULL
}, *label
= NULL
;
2801 label
= nfs4_label_init_security(dir
, ctx
->dentry
, attr
, &l
);
2803 /* Protect against concurrent sillydeletes */
2804 state
= nfs4_do_open(dir
, ctx
, open_flags
, attr
, label
, opened
);
2806 nfs4_label_release_security(label
);
2809 return ERR_CAST(state
);
2810 return state
->inode
;
2813 static void nfs4_close_context(struct nfs_open_context
*ctx
, int is_sync
)
2815 if (ctx
->state
== NULL
)
2818 nfs4_close_sync(ctx
->state
, ctx
->mode
);
2820 nfs4_close_state(ctx
->state
, ctx
->mode
);
2823 #define FATTR4_WORD1_NFS40_MASK (2*FATTR4_WORD1_MOUNTED_ON_FILEID - 1UL)
2824 #define FATTR4_WORD2_NFS41_MASK (2*FATTR4_WORD2_SUPPATTR_EXCLCREAT - 1UL)
2825 #define FATTR4_WORD2_NFS42_MASK (2*FATTR4_WORD2_SECURITY_LABEL - 1UL)
2827 static int _nfs4_server_capabilities(struct nfs_server
*server
, struct nfs_fh
*fhandle
)
2829 struct nfs4_server_caps_arg args
= {
2832 struct nfs4_server_caps_res res
= {};
2833 struct rpc_message msg
= {
2834 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SERVER_CAPS
],
2840 status
= nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
2842 /* Sanity check the server answers */
2843 switch (server
->nfs_client
->cl_minorversion
) {
2845 res
.attr_bitmask
[1] &= FATTR4_WORD1_NFS40_MASK
;
2846 res
.attr_bitmask
[2] = 0;
2849 res
.attr_bitmask
[2] &= FATTR4_WORD2_NFS41_MASK
;
2852 res
.attr_bitmask
[2] &= FATTR4_WORD2_NFS42_MASK
;
2854 memcpy(server
->attr_bitmask
, res
.attr_bitmask
, sizeof(server
->attr_bitmask
));
2855 server
->caps
&= ~(NFS_CAP_ACLS
|NFS_CAP_HARDLINKS
|
2856 NFS_CAP_SYMLINKS
|NFS_CAP_FILEID
|
2857 NFS_CAP_MODE
|NFS_CAP_NLINK
|NFS_CAP_OWNER
|
2858 NFS_CAP_OWNER_GROUP
|NFS_CAP_ATIME
|
2859 NFS_CAP_CTIME
|NFS_CAP_MTIME
|
2860 NFS_CAP_SECURITY_LABEL
);
2861 if (res
.attr_bitmask
[0] & FATTR4_WORD0_ACL
&&
2862 res
.acl_bitmask
& ACL4_SUPPORT_ALLOW_ACL
)
2863 server
->caps
|= NFS_CAP_ACLS
;
2864 if (res
.has_links
!= 0)
2865 server
->caps
|= NFS_CAP_HARDLINKS
;
2866 if (res
.has_symlinks
!= 0)
2867 server
->caps
|= NFS_CAP_SYMLINKS
;
2868 if (res
.attr_bitmask
[0] & FATTR4_WORD0_FILEID
)
2869 server
->caps
|= NFS_CAP_FILEID
;
2870 if (res
.attr_bitmask
[1] & FATTR4_WORD1_MODE
)
2871 server
->caps
|= NFS_CAP_MODE
;
2872 if (res
.attr_bitmask
[1] & FATTR4_WORD1_NUMLINKS
)
2873 server
->caps
|= NFS_CAP_NLINK
;
2874 if (res
.attr_bitmask
[1] & FATTR4_WORD1_OWNER
)
2875 server
->caps
|= NFS_CAP_OWNER
;
2876 if (res
.attr_bitmask
[1] & FATTR4_WORD1_OWNER_GROUP
)
2877 server
->caps
|= NFS_CAP_OWNER_GROUP
;
2878 if (res
.attr_bitmask
[1] & FATTR4_WORD1_TIME_ACCESS
)
2879 server
->caps
|= NFS_CAP_ATIME
;
2880 if (res
.attr_bitmask
[1] & FATTR4_WORD1_TIME_METADATA
)
2881 server
->caps
|= NFS_CAP_CTIME
;
2882 if (res
.attr_bitmask
[1] & FATTR4_WORD1_TIME_MODIFY
)
2883 server
->caps
|= NFS_CAP_MTIME
;
2884 #ifdef CONFIG_NFS_V4_SECURITY_LABEL
2885 if (res
.attr_bitmask
[2] & FATTR4_WORD2_SECURITY_LABEL
)
2886 server
->caps
|= NFS_CAP_SECURITY_LABEL
;
2888 memcpy(server
->attr_bitmask_nl
, res
.attr_bitmask
,
2889 sizeof(server
->attr_bitmask
));
2890 server
->attr_bitmask_nl
[2] &= ~FATTR4_WORD2_SECURITY_LABEL
;
2892 memcpy(server
->cache_consistency_bitmask
, res
.attr_bitmask
, sizeof(server
->cache_consistency_bitmask
));
2893 server
->cache_consistency_bitmask
[0] &= FATTR4_WORD0_CHANGE
|FATTR4_WORD0_SIZE
;
2894 server
->cache_consistency_bitmask
[1] &= FATTR4_WORD1_TIME_METADATA
|FATTR4_WORD1_TIME_MODIFY
;
2895 server
->cache_consistency_bitmask
[2] = 0;
2896 server
->acl_bitmask
= res
.acl_bitmask
;
2897 server
->fh_expire_type
= res
.fh_expire_type
;
2903 int nfs4_server_capabilities(struct nfs_server
*server
, struct nfs_fh
*fhandle
)
2905 struct nfs4_exception exception
= { };
2908 err
= nfs4_handle_exception(server
,
2909 _nfs4_server_capabilities(server
, fhandle
),
2911 } while (exception
.retry
);
2915 static int _nfs4_lookup_root(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
2916 struct nfs_fsinfo
*info
)
2919 struct nfs4_lookup_root_arg args
= {
2922 struct nfs4_lookup_res res
= {
2924 .fattr
= info
->fattr
,
2927 struct rpc_message msg
= {
2928 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOOKUP_ROOT
],
2933 bitmask
[0] = nfs4_fattr_bitmap
[0];
2934 bitmask
[1] = nfs4_fattr_bitmap
[1];
2936 * Process the label in the upcoming getfattr
2938 bitmask
[2] = nfs4_fattr_bitmap
[2] & ~FATTR4_WORD2_SECURITY_LABEL
;
2940 nfs_fattr_init(info
->fattr
);
2941 return nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
2944 static int nfs4_lookup_root(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
2945 struct nfs_fsinfo
*info
)
2947 struct nfs4_exception exception
= { };
2950 err
= _nfs4_lookup_root(server
, fhandle
, info
);
2951 trace_nfs4_lookup_root(server
, fhandle
, info
->fattr
, err
);
2954 case -NFS4ERR_WRONGSEC
:
2957 err
= nfs4_handle_exception(server
, err
, &exception
);
2959 } while (exception
.retry
);
2964 static int nfs4_lookup_root_sec(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
2965 struct nfs_fsinfo
*info
, rpc_authflavor_t flavor
)
2967 struct rpc_auth_create_args auth_args
= {
2968 .pseudoflavor
= flavor
,
2970 struct rpc_auth
*auth
;
2973 auth
= rpcauth_create(&auth_args
, server
->client
);
2978 ret
= nfs4_lookup_root(server
, fhandle
, info
);
2984 * Retry pseudoroot lookup with various security flavors. We do this when:
2986 * NFSv4.0: the PUTROOTFH operation returns NFS4ERR_WRONGSEC
2987 * NFSv4.1: the server does not support the SECINFO_NO_NAME operation
2989 * Returns zero on success, or a negative NFS4ERR value, or a
2990 * negative errno value.
2992 static int nfs4_find_root_sec(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
2993 struct nfs_fsinfo
*info
)
2995 /* Per 3530bis 15.33.5 */
2996 static const rpc_authflavor_t flav_array
[] = {
3000 RPC_AUTH_UNIX
, /* courtesy */
3003 int status
= -EPERM
;
3006 if (server
->auth_info
.flavor_len
> 0) {
3007 /* try each flavor specified by user */
3008 for (i
= 0; i
< server
->auth_info
.flavor_len
; i
++) {
3009 status
= nfs4_lookup_root_sec(server
, fhandle
, info
,
3010 server
->auth_info
.flavors
[i
]);
3011 if (status
== -NFS4ERR_WRONGSEC
|| status
== -EACCES
)
3016 /* no flavors specified by user, try default list */
3017 for (i
= 0; i
< ARRAY_SIZE(flav_array
); i
++) {
3018 status
= nfs4_lookup_root_sec(server
, fhandle
, info
,
3020 if (status
== -NFS4ERR_WRONGSEC
|| status
== -EACCES
)
3027 * -EACCESS could mean that the user doesn't have correct permissions
3028 * to access the mount. It could also mean that we tried to mount
3029 * with a gss auth flavor, but rpc.gssd isn't running. Either way,
3030 * existing mount programs don't handle -EACCES very well so it should
3031 * be mapped to -EPERM instead.
3033 if (status
== -EACCES
)
3038 static int nfs4_do_find_root_sec(struct nfs_server
*server
,
3039 struct nfs_fh
*fhandle
, struct nfs_fsinfo
*info
)
3041 int mv
= server
->nfs_client
->cl_minorversion
;
3042 return nfs_v4_minor_ops
[mv
]->find_root_sec(server
, fhandle
, info
);
3046 * nfs4_proc_get_rootfh - get file handle for server's pseudoroot
3047 * @server: initialized nfs_server handle
3048 * @fhandle: we fill in the pseudo-fs root file handle
3049 * @info: we fill in an FSINFO struct
3050 * @auth_probe: probe the auth flavours
3052 * Returns zero on success, or a negative errno.
3054 int nfs4_proc_get_rootfh(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
3055 struct nfs_fsinfo
*info
,
3060 switch (auth_probe
) {
3062 status
= nfs4_lookup_root(server
, fhandle
, info
);
3063 if (status
!= -NFS4ERR_WRONGSEC
)
3066 status
= nfs4_do_find_root_sec(server
, fhandle
, info
);
3070 status
= nfs4_server_capabilities(server
, fhandle
);
3072 status
= nfs4_do_fsinfo(server
, fhandle
, info
);
3074 return nfs4_map_errors(status
);
3077 static int nfs4_proc_get_root(struct nfs_server
*server
, struct nfs_fh
*mntfh
,
3078 struct nfs_fsinfo
*info
)
3081 struct nfs_fattr
*fattr
= info
->fattr
;
3082 struct nfs4_label
*label
= NULL
;
3084 error
= nfs4_server_capabilities(server
, mntfh
);
3086 dprintk("nfs4_get_root: getcaps error = %d\n", -error
);
3090 label
= nfs4_label_alloc(server
, GFP_KERNEL
);
3092 return PTR_ERR(label
);
3094 error
= nfs4_proc_getattr(server
, mntfh
, fattr
, label
);
3096 dprintk("nfs4_get_root: getattr error = %d\n", -error
);
3097 goto err_free_label
;
3100 if (fattr
->valid
& NFS_ATTR_FATTR_FSID
&&
3101 !nfs_fsid_equal(&server
->fsid
, &fattr
->fsid
))
3102 memcpy(&server
->fsid
, &fattr
->fsid
, sizeof(server
->fsid
));
3105 nfs4_label_free(label
);
3111 * Get locations and (maybe) other attributes of a referral.
3112 * Note that we'll actually follow the referral later when
3113 * we detect fsid mismatch in inode revalidation
3115 static int nfs4_get_referral(struct rpc_clnt
*client
, struct inode
*dir
,
3116 const struct qstr
*name
, struct nfs_fattr
*fattr
,
3117 struct nfs_fh
*fhandle
)
3119 int status
= -ENOMEM
;
3120 struct page
*page
= NULL
;
3121 struct nfs4_fs_locations
*locations
= NULL
;
3123 page
= alloc_page(GFP_KERNEL
);
3126 locations
= kmalloc(sizeof(struct nfs4_fs_locations
), GFP_KERNEL
);
3127 if (locations
== NULL
)
3130 status
= nfs4_proc_fs_locations(client
, dir
, name
, locations
, page
);
3135 * If the fsid didn't change, this is a migration event, not a
3136 * referral. Cause us to drop into the exception handler, which
3137 * will kick off migration recovery.
3139 if (nfs_fsid_equal(&NFS_SERVER(dir
)->fsid
, &locations
->fattr
.fsid
)) {
3140 dprintk("%s: server did not return a different fsid for"
3141 " a referral at %s\n", __func__
, name
->name
);
3142 status
= -NFS4ERR_MOVED
;
3145 /* Fixup attributes for the nfs_lookup() call to nfs_fhget() */
3146 nfs_fixup_referral_attributes(&locations
->fattr
);
3148 /* replace the lookup nfs_fattr with the locations nfs_fattr */
3149 memcpy(fattr
, &locations
->fattr
, sizeof(struct nfs_fattr
));
3150 memset(fhandle
, 0, sizeof(struct nfs_fh
));
3158 static int _nfs4_proc_getattr(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
3159 struct nfs_fattr
*fattr
, struct nfs4_label
*label
)
3161 struct nfs4_getattr_arg args
= {
3163 .bitmask
= server
->attr_bitmask
,
3165 struct nfs4_getattr_res res
= {
3170 struct rpc_message msg
= {
3171 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GETATTR
],
3176 args
.bitmask
= nfs4_bitmask(server
, label
);
3178 nfs_fattr_init(fattr
);
3179 return nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
3182 static int nfs4_proc_getattr(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
3183 struct nfs_fattr
*fattr
, struct nfs4_label
*label
)
3185 struct nfs4_exception exception
= { };
3188 err
= _nfs4_proc_getattr(server
, fhandle
, fattr
, label
);
3189 trace_nfs4_getattr(server
, fhandle
, fattr
, err
);
3190 err
= nfs4_handle_exception(server
, err
,
3192 } while (exception
.retry
);
3197 * The file is not closed if it is opened due to the a request to change
3198 * the size of the file. The open call will not be needed once the
3199 * VFS layer lookup-intents are implemented.
3201 * Close is called when the inode is destroyed.
3202 * If we haven't opened the file for O_WRONLY, we
3203 * need to in the size_change case to obtain a stateid.
3206 * Because OPEN is always done by name in nfsv4, it is
3207 * possible that we opened a different file by the same
3208 * name. We can recognize this race condition, but we
3209 * can't do anything about it besides returning an error.
3211 * This will be fixed with VFS changes (lookup-intent).
3214 nfs4_proc_setattr(struct dentry
*dentry
, struct nfs_fattr
*fattr
,
3215 struct iattr
*sattr
)
3217 struct inode
*inode
= dentry
->d_inode
;
3218 struct rpc_cred
*cred
= NULL
;
3219 struct nfs4_state
*state
= NULL
;
3220 struct nfs4_label
*label
= NULL
;
3223 if (pnfs_ld_layoutret_on_setattr(inode
) &&
3224 sattr
->ia_valid
& ATTR_SIZE
&&
3225 sattr
->ia_size
< i_size_read(inode
))
3226 pnfs_commit_and_return_layout(inode
);
3228 nfs_fattr_init(fattr
);
3230 /* Deal with open(O_TRUNC) */
3231 if (sattr
->ia_valid
& ATTR_OPEN
)
3232 sattr
->ia_valid
&= ~(ATTR_MTIME
|ATTR_CTIME
);
3234 /* Optimization: if the end result is no change, don't RPC */
3235 if ((sattr
->ia_valid
& ~(ATTR_FILE
|ATTR_OPEN
)) == 0)
3238 /* Search for an existing open(O_WRITE) file */
3239 if (sattr
->ia_valid
& ATTR_FILE
) {
3240 struct nfs_open_context
*ctx
;
3242 ctx
= nfs_file_open_context(sattr
->ia_file
);
3249 label
= nfs4_label_alloc(NFS_SERVER(inode
), GFP_KERNEL
);
3251 return PTR_ERR(label
);
3253 status
= nfs4_do_setattr(inode
, cred
, fattr
, sattr
, state
, NULL
, label
);
3255 nfs_setattr_update_inode(inode
, sattr
);
3256 nfs_setsecurity(inode
, fattr
, label
);
3258 nfs4_label_free(label
);
3262 static int _nfs4_proc_lookup(struct rpc_clnt
*clnt
, struct inode
*dir
,
3263 const struct qstr
*name
, struct nfs_fh
*fhandle
,
3264 struct nfs_fattr
*fattr
, struct nfs4_label
*label
)
3266 struct nfs_server
*server
= NFS_SERVER(dir
);
3268 struct nfs4_lookup_arg args
= {
3269 .bitmask
= server
->attr_bitmask
,
3270 .dir_fh
= NFS_FH(dir
),
3273 struct nfs4_lookup_res res
= {
3279 struct rpc_message msg
= {
3280 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOOKUP
],
3285 args
.bitmask
= nfs4_bitmask(server
, label
);
3287 nfs_fattr_init(fattr
);
3289 dprintk("NFS call lookup %s\n", name
->name
);
3290 status
= nfs4_call_sync(clnt
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
3291 dprintk("NFS reply lookup: %d\n", status
);
3295 static void nfs_fixup_secinfo_attributes(struct nfs_fattr
*fattr
)
3297 fattr
->valid
|= NFS_ATTR_FATTR_TYPE
| NFS_ATTR_FATTR_MODE
|
3298 NFS_ATTR_FATTR_NLINK
| NFS_ATTR_FATTR_MOUNTPOINT
;
3299 fattr
->mode
= S_IFDIR
| S_IRUGO
| S_IXUGO
;
3303 static int nfs4_proc_lookup_common(struct rpc_clnt
**clnt
, struct inode
*dir
,
3304 struct qstr
*name
, struct nfs_fh
*fhandle
,
3305 struct nfs_fattr
*fattr
, struct nfs4_label
*label
)
3307 struct nfs4_exception exception
= { };
3308 struct rpc_clnt
*client
= *clnt
;
3311 err
= _nfs4_proc_lookup(client
, dir
, name
, fhandle
, fattr
, label
);
3312 trace_nfs4_lookup(dir
, name
, err
);
3314 case -NFS4ERR_BADNAME
:
3317 case -NFS4ERR_MOVED
:
3318 err
= nfs4_get_referral(client
, dir
, name
, fattr
, fhandle
);
3320 case -NFS4ERR_WRONGSEC
:
3322 if (client
!= *clnt
)
3324 client
= nfs4_negotiate_security(client
, dir
, name
);
3326 return PTR_ERR(client
);
3328 exception
.retry
= 1;
3331 err
= nfs4_handle_exception(NFS_SERVER(dir
), err
, &exception
);
3333 } while (exception
.retry
);
3338 else if (client
!= *clnt
)
3339 rpc_shutdown_client(client
);
3344 static int nfs4_proc_lookup(struct inode
*dir
, struct qstr
*name
,
3345 struct nfs_fh
*fhandle
, struct nfs_fattr
*fattr
,
3346 struct nfs4_label
*label
)
3349 struct rpc_clnt
*client
= NFS_CLIENT(dir
);
3351 status
= nfs4_proc_lookup_common(&client
, dir
, name
, fhandle
, fattr
, label
);
3352 if (client
!= NFS_CLIENT(dir
)) {
3353 rpc_shutdown_client(client
);
3354 nfs_fixup_secinfo_attributes(fattr
);
3360 nfs4_proc_lookup_mountpoint(struct inode
*dir
, struct qstr
*name
,
3361 struct nfs_fh
*fhandle
, struct nfs_fattr
*fattr
)
3363 struct rpc_clnt
*client
= NFS_CLIENT(dir
);
3366 status
= nfs4_proc_lookup_common(&client
, dir
, name
, fhandle
, fattr
, NULL
);
3368 return ERR_PTR(status
);
3369 return (client
== NFS_CLIENT(dir
)) ? rpc_clone_client(client
) : client
;
3372 static int _nfs4_proc_access(struct inode
*inode
, struct nfs_access_entry
*entry
)
3374 struct nfs_server
*server
= NFS_SERVER(inode
);
3375 struct nfs4_accessargs args
= {
3376 .fh
= NFS_FH(inode
),
3377 .bitmask
= server
->cache_consistency_bitmask
,
3379 struct nfs4_accessres res
= {
3382 struct rpc_message msg
= {
3383 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_ACCESS
],
3386 .rpc_cred
= entry
->cred
,
3388 int mode
= entry
->mask
;
3392 * Determine which access bits we want to ask for...
3394 if (mode
& MAY_READ
)
3395 args
.access
|= NFS4_ACCESS_READ
;
3396 if (S_ISDIR(inode
->i_mode
)) {
3397 if (mode
& MAY_WRITE
)
3398 args
.access
|= NFS4_ACCESS_MODIFY
| NFS4_ACCESS_EXTEND
| NFS4_ACCESS_DELETE
;
3399 if (mode
& MAY_EXEC
)
3400 args
.access
|= NFS4_ACCESS_LOOKUP
;
3402 if (mode
& MAY_WRITE
)
3403 args
.access
|= NFS4_ACCESS_MODIFY
| NFS4_ACCESS_EXTEND
;
3404 if (mode
& MAY_EXEC
)
3405 args
.access
|= NFS4_ACCESS_EXECUTE
;
3408 res
.fattr
= nfs_alloc_fattr();
3409 if (res
.fattr
== NULL
)
3412 status
= nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
3414 nfs_access_set_mask(entry
, res
.access
);
3415 nfs_refresh_inode(inode
, res
.fattr
);
3417 nfs_free_fattr(res
.fattr
);
3421 static int nfs4_proc_access(struct inode
*inode
, struct nfs_access_entry
*entry
)
3423 struct nfs4_exception exception
= { };
3426 err
= _nfs4_proc_access(inode
, entry
);
3427 trace_nfs4_access(inode
, err
);
3428 err
= nfs4_handle_exception(NFS_SERVER(inode
), err
,
3430 } while (exception
.retry
);
3435 * TODO: For the time being, we don't try to get any attributes
3436 * along with any of the zero-copy operations READ, READDIR,
3439 * In the case of the first three, we want to put the GETATTR
3440 * after the read-type operation -- this is because it is hard
3441 * to predict the length of a GETATTR response in v4, and thus
3442 * align the READ data correctly. This means that the GETATTR
3443 * may end up partially falling into the page cache, and we should
3444 * shift it into the 'tail' of the xdr_buf before processing.
3445 * To do this efficiently, we need to know the total length
3446 * of data received, which doesn't seem to be available outside
3449 * In the case of WRITE, we also want to put the GETATTR after
3450 * the operation -- in this case because we want to make sure
3451 * we get the post-operation mtime and size.
3453 * Both of these changes to the XDR layer would in fact be quite
3454 * minor, but I decided to leave them for a subsequent patch.
3456 static int _nfs4_proc_readlink(struct inode
*inode
, struct page
*page
,
3457 unsigned int pgbase
, unsigned int pglen
)
3459 struct nfs4_readlink args
= {
3460 .fh
= NFS_FH(inode
),
3465 struct nfs4_readlink_res res
;
3466 struct rpc_message msg
= {
3467 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_READLINK
],
3472 return nfs4_call_sync(NFS_SERVER(inode
)->client
, NFS_SERVER(inode
), &msg
, &args
.seq_args
, &res
.seq_res
, 0);
3475 static int nfs4_proc_readlink(struct inode
*inode
, struct page
*page
,
3476 unsigned int pgbase
, unsigned int pglen
)
3478 struct nfs4_exception exception
= { };
3481 err
= _nfs4_proc_readlink(inode
, page
, pgbase
, pglen
);
3482 trace_nfs4_readlink(inode
, err
);
3483 err
= nfs4_handle_exception(NFS_SERVER(inode
), err
,
3485 } while (exception
.retry
);
3490 * This is just for mknod. open(O_CREAT) will always do ->open_context().
3493 nfs4_proc_create(struct inode
*dir
, struct dentry
*dentry
, struct iattr
*sattr
,
3496 struct nfs4_label l
, *ilabel
= NULL
;
3497 struct nfs_open_context
*ctx
;
3498 struct nfs4_state
*state
;
3502 ctx
= alloc_nfs_open_context(dentry
, FMODE_READ
);
3504 return PTR_ERR(ctx
);
3506 ilabel
= nfs4_label_init_security(dir
, dentry
, sattr
, &l
);
3508 sattr
->ia_mode
&= ~current_umask();
3509 state
= nfs4_do_open(dir
, ctx
, flags
, sattr
, ilabel
, &opened
);
3510 if (IS_ERR(state
)) {
3511 status
= PTR_ERR(state
);
3515 nfs4_label_release_security(ilabel
);
3516 put_nfs_open_context(ctx
);
3520 static int _nfs4_proc_remove(struct inode
*dir
, struct qstr
*name
)
3522 struct nfs_server
*server
= NFS_SERVER(dir
);
3523 struct nfs_removeargs args
= {
3527 struct nfs_removeres res
= {
3530 struct rpc_message msg
= {
3531 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_REMOVE
],
3537 status
= nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 1);
3539 update_changeattr(dir
, &res
.cinfo
);
3543 static int nfs4_proc_remove(struct inode
*dir
, struct qstr
*name
)
3545 struct nfs4_exception exception
= { };
3548 err
= _nfs4_proc_remove(dir
, name
);
3549 trace_nfs4_remove(dir
, name
, err
);
3550 err
= nfs4_handle_exception(NFS_SERVER(dir
), err
,
3552 } while (exception
.retry
);
3556 static void nfs4_proc_unlink_setup(struct rpc_message
*msg
, struct inode
*dir
)
3558 struct nfs_server
*server
= NFS_SERVER(dir
);
3559 struct nfs_removeargs
*args
= msg
->rpc_argp
;
3560 struct nfs_removeres
*res
= msg
->rpc_resp
;
3562 res
->server
= server
;
3563 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_REMOVE
];
3564 nfs4_init_sequence(&args
->seq_args
, &res
->seq_res
, 1);
3566 nfs_fattr_init(res
->dir_attr
);
3569 static void nfs4_proc_unlink_rpc_prepare(struct rpc_task
*task
, struct nfs_unlinkdata
*data
)
3571 nfs4_setup_sequence(NFS_SERVER(data
->dir
),
3572 &data
->args
.seq_args
,
3577 static int nfs4_proc_unlink_done(struct rpc_task
*task
, struct inode
*dir
)
3579 struct nfs_unlinkdata
*data
= task
->tk_calldata
;
3580 struct nfs_removeres
*res
= &data
->res
;
3582 if (!nfs4_sequence_done(task
, &res
->seq_res
))
3584 if (nfs4_async_handle_error(task
, res
->server
, NULL
,
3585 &data
->timeout
) == -EAGAIN
)
3587 update_changeattr(dir
, &res
->cinfo
);
3591 static void nfs4_proc_rename_setup(struct rpc_message
*msg
, struct inode
*dir
)
3593 struct nfs_server
*server
= NFS_SERVER(dir
);
3594 struct nfs_renameargs
*arg
= msg
->rpc_argp
;
3595 struct nfs_renameres
*res
= msg
->rpc_resp
;
3597 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RENAME
];
3598 res
->server
= server
;
3599 nfs4_init_sequence(&arg
->seq_args
, &res
->seq_res
, 1);
3602 static void nfs4_proc_rename_rpc_prepare(struct rpc_task
*task
, struct nfs_renamedata
*data
)
3604 nfs4_setup_sequence(NFS_SERVER(data
->old_dir
),
3605 &data
->args
.seq_args
,
3610 static int nfs4_proc_rename_done(struct rpc_task
*task
, struct inode
*old_dir
,
3611 struct inode
*new_dir
)
3613 struct nfs_renamedata
*data
= task
->tk_calldata
;
3614 struct nfs_renameres
*res
= &data
->res
;
3616 if (!nfs4_sequence_done(task
, &res
->seq_res
))
3618 if (nfs4_async_handle_error(task
, res
->server
, NULL
, &data
->timeout
) == -EAGAIN
)
3621 update_changeattr(old_dir
, &res
->old_cinfo
);
3622 update_changeattr(new_dir
, &res
->new_cinfo
);
3626 static int _nfs4_proc_link(struct inode
*inode
, struct inode
*dir
, struct qstr
*name
)
3628 struct nfs_server
*server
= NFS_SERVER(inode
);
3629 struct nfs4_link_arg arg
= {
3630 .fh
= NFS_FH(inode
),
3631 .dir_fh
= NFS_FH(dir
),
3633 .bitmask
= server
->attr_bitmask
,
3635 struct nfs4_link_res res
= {
3639 struct rpc_message msg
= {
3640 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LINK
],
3644 int status
= -ENOMEM
;
3646 res
.fattr
= nfs_alloc_fattr();
3647 if (res
.fattr
== NULL
)
3650 res
.label
= nfs4_label_alloc(server
, GFP_KERNEL
);
3651 if (IS_ERR(res
.label
)) {
3652 status
= PTR_ERR(res
.label
);
3655 arg
.bitmask
= nfs4_bitmask(server
, res
.label
);
3657 status
= nfs4_call_sync(server
->client
, server
, &msg
, &arg
.seq_args
, &res
.seq_res
, 1);
3659 update_changeattr(dir
, &res
.cinfo
);
3660 status
= nfs_post_op_update_inode(inode
, res
.fattr
);
3662 nfs_setsecurity(inode
, res
.fattr
, res
.label
);
3666 nfs4_label_free(res
.label
);
3669 nfs_free_fattr(res
.fattr
);
3673 static int nfs4_proc_link(struct inode
*inode
, struct inode
*dir
, struct qstr
*name
)
3675 struct nfs4_exception exception
= { };
3678 err
= nfs4_handle_exception(NFS_SERVER(inode
),
3679 _nfs4_proc_link(inode
, dir
, name
),
3681 } while (exception
.retry
);
3685 struct nfs4_createdata
{
3686 struct rpc_message msg
;
3687 struct nfs4_create_arg arg
;
3688 struct nfs4_create_res res
;
3690 struct nfs_fattr fattr
;
3691 struct nfs4_label
*label
;
3694 static struct nfs4_createdata
*nfs4_alloc_createdata(struct inode
*dir
,
3695 struct qstr
*name
, struct iattr
*sattr
, u32 ftype
)
3697 struct nfs4_createdata
*data
;
3699 data
= kzalloc(sizeof(*data
), GFP_KERNEL
);
3701 struct nfs_server
*server
= NFS_SERVER(dir
);
3703 data
->label
= nfs4_label_alloc(server
, GFP_KERNEL
);
3704 if (IS_ERR(data
->label
))
3707 data
->msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_CREATE
];
3708 data
->msg
.rpc_argp
= &data
->arg
;
3709 data
->msg
.rpc_resp
= &data
->res
;
3710 data
->arg
.dir_fh
= NFS_FH(dir
);
3711 data
->arg
.server
= server
;
3712 data
->arg
.name
= name
;
3713 data
->arg
.attrs
= sattr
;
3714 data
->arg
.ftype
= ftype
;
3715 data
->arg
.bitmask
= nfs4_bitmask(server
, data
->label
);
3716 data
->res
.server
= server
;
3717 data
->res
.fh
= &data
->fh
;
3718 data
->res
.fattr
= &data
->fattr
;
3719 data
->res
.label
= data
->label
;
3720 nfs_fattr_init(data
->res
.fattr
);
3728 static int nfs4_do_create(struct inode
*dir
, struct dentry
*dentry
, struct nfs4_createdata
*data
)
3730 int status
= nfs4_call_sync(NFS_SERVER(dir
)->client
, NFS_SERVER(dir
), &data
->msg
,
3731 &data
->arg
.seq_args
, &data
->res
.seq_res
, 1);
3733 update_changeattr(dir
, &data
->res
.dir_cinfo
);
3734 status
= nfs_instantiate(dentry
, data
->res
.fh
, data
->res
.fattr
, data
->res
.label
);
3739 static void nfs4_free_createdata(struct nfs4_createdata
*data
)
3741 nfs4_label_free(data
->label
);
3745 static int _nfs4_proc_symlink(struct inode
*dir
, struct dentry
*dentry
,
3746 struct page
*page
, unsigned int len
, struct iattr
*sattr
,
3747 struct nfs4_label
*label
)
3749 struct nfs4_createdata
*data
;
3750 int status
= -ENAMETOOLONG
;
3752 if (len
> NFS4_MAXPATHLEN
)
3756 data
= nfs4_alloc_createdata(dir
, &dentry
->d_name
, sattr
, NF4LNK
);
3760 data
->msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SYMLINK
];
3761 data
->arg
.u
.symlink
.pages
= &page
;
3762 data
->arg
.u
.symlink
.len
= len
;
3763 data
->arg
.label
= label
;
3765 status
= nfs4_do_create(dir
, dentry
, data
);
3767 nfs4_free_createdata(data
);
3772 static int nfs4_proc_symlink(struct inode
*dir
, struct dentry
*dentry
,
3773 struct page
*page
, unsigned int len
, struct iattr
*sattr
)
3775 struct nfs4_exception exception
= { };
3776 struct nfs4_label l
, *label
= NULL
;
3779 label
= nfs4_label_init_security(dir
, dentry
, sattr
, &l
);
3782 err
= _nfs4_proc_symlink(dir
, dentry
, page
, len
, sattr
, label
);
3783 trace_nfs4_symlink(dir
, &dentry
->d_name
, err
);
3784 err
= nfs4_handle_exception(NFS_SERVER(dir
), err
,
3786 } while (exception
.retry
);
3788 nfs4_label_release_security(label
);
3792 static int _nfs4_proc_mkdir(struct inode
*dir
, struct dentry
*dentry
,
3793 struct iattr
*sattr
, struct nfs4_label
*label
)
3795 struct nfs4_createdata
*data
;
3796 int status
= -ENOMEM
;
3798 data
= nfs4_alloc_createdata(dir
, &dentry
->d_name
, sattr
, NF4DIR
);
3802 data
->arg
.label
= label
;
3803 status
= nfs4_do_create(dir
, dentry
, data
);
3805 nfs4_free_createdata(data
);
3810 static int nfs4_proc_mkdir(struct inode
*dir
, struct dentry
*dentry
,
3811 struct iattr
*sattr
)
3813 struct nfs4_exception exception
= { };
3814 struct nfs4_label l
, *label
= NULL
;
3817 label
= nfs4_label_init_security(dir
, dentry
, sattr
, &l
);
3819 sattr
->ia_mode
&= ~current_umask();
3821 err
= _nfs4_proc_mkdir(dir
, dentry
, sattr
, label
);
3822 trace_nfs4_mkdir(dir
, &dentry
->d_name
, err
);
3823 err
= nfs4_handle_exception(NFS_SERVER(dir
), err
,
3825 } while (exception
.retry
);
3826 nfs4_label_release_security(label
);
3831 static int _nfs4_proc_readdir(struct dentry
*dentry
, struct rpc_cred
*cred
,
3832 u64 cookie
, struct page
**pages
, unsigned int count
, int plus
)
3834 struct inode
*dir
= dentry
->d_inode
;
3835 struct nfs4_readdir_arg args
= {
3840 .bitmask
= NFS_SERVER(dentry
->d_inode
)->attr_bitmask
,
3843 struct nfs4_readdir_res res
;
3844 struct rpc_message msg
= {
3845 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_READDIR
],
3852 dprintk("%s: dentry = %pd2, cookie = %Lu\n", __func__
,
3854 (unsigned long long)cookie
);
3855 nfs4_setup_readdir(cookie
, NFS_I(dir
)->cookieverf
, dentry
, &args
);
3856 res
.pgbase
= args
.pgbase
;
3857 status
= nfs4_call_sync(NFS_SERVER(dir
)->client
, NFS_SERVER(dir
), &msg
, &args
.seq_args
, &res
.seq_res
, 0);
3859 memcpy(NFS_I(dir
)->cookieverf
, res
.verifier
.data
, NFS4_VERIFIER_SIZE
);
3860 status
+= args
.pgbase
;
3863 nfs_invalidate_atime(dir
);
3865 dprintk("%s: returns %d\n", __func__
, status
);
3869 static int nfs4_proc_readdir(struct dentry
*dentry
, struct rpc_cred
*cred
,
3870 u64 cookie
, struct page
**pages
, unsigned int count
, int plus
)
3872 struct nfs4_exception exception
= { };
3875 err
= _nfs4_proc_readdir(dentry
, cred
, cookie
,
3876 pages
, count
, plus
);
3877 trace_nfs4_readdir(dentry
->d_inode
, err
);
3878 err
= nfs4_handle_exception(NFS_SERVER(dentry
->d_inode
), err
,
3880 } while (exception
.retry
);
3884 static int _nfs4_proc_mknod(struct inode
*dir
, struct dentry
*dentry
,
3885 struct iattr
*sattr
, struct nfs4_label
*label
, dev_t rdev
)
3887 struct nfs4_createdata
*data
;
3888 int mode
= sattr
->ia_mode
;
3889 int status
= -ENOMEM
;
3891 data
= nfs4_alloc_createdata(dir
, &dentry
->d_name
, sattr
, NF4SOCK
);
3896 data
->arg
.ftype
= NF4FIFO
;
3897 else if (S_ISBLK(mode
)) {
3898 data
->arg
.ftype
= NF4BLK
;
3899 data
->arg
.u
.device
.specdata1
= MAJOR(rdev
);
3900 data
->arg
.u
.device
.specdata2
= MINOR(rdev
);
3902 else if (S_ISCHR(mode
)) {
3903 data
->arg
.ftype
= NF4CHR
;
3904 data
->arg
.u
.device
.specdata1
= MAJOR(rdev
);
3905 data
->arg
.u
.device
.specdata2
= MINOR(rdev
);
3906 } else if (!S_ISSOCK(mode
)) {
3911 data
->arg
.label
= label
;
3912 status
= nfs4_do_create(dir
, dentry
, data
);
3914 nfs4_free_createdata(data
);
3919 static int nfs4_proc_mknod(struct inode
*dir
, struct dentry
*dentry
,
3920 struct iattr
*sattr
, dev_t rdev
)
3922 struct nfs4_exception exception
= { };
3923 struct nfs4_label l
, *label
= NULL
;
3926 label
= nfs4_label_init_security(dir
, dentry
, sattr
, &l
);
3928 sattr
->ia_mode
&= ~current_umask();
3930 err
= _nfs4_proc_mknod(dir
, dentry
, sattr
, label
, rdev
);
3931 trace_nfs4_mknod(dir
, &dentry
->d_name
, err
);
3932 err
= nfs4_handle_exception(NFS_SERVER(dir
), err
,
3934 } while (exception
.retry
);
3936 nfs4_label_release_security(label
);
3941 static int _nfs4_proc_statfs(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
3942 struct nfs_fsstat
*fsstat
)
3944 struct nfs4_statfs_arg args
= {
3946 .bitmask
= server
->attr_bitmask
,
3948 struct nfs4_statfs_res res
= {
3951 struct rpc_message msg
= {
3952 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_STATFS
],
3957 nfs_fattr_init(fsstat
->fattr
);
3958 return nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
3961 static int nfs4_proc_statfs(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fsstat
*fsstat
)
3963 struct nfs4_exception exception
= { };
3966 err
= nfs4_handle_exception(server
,
3967 _nfs4_proc_statfs(server
, fhandle
, fsstat
),
3969 } while (exception
.retry
);
3973 static int _nfs4_do_fsinfo(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
3974 struct nfs_fsinfo
*fsinfo
)
3976 struct nfs4_fsinfo_arg args
= {
3978 .bitmask
= server
->attr_bitmask
,
3980 struct nfs4_fsinfo_res res
= {
3983 struct rpc_message msg
= {
3984 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_FSINFO
],
3989 return nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
3992 static int nfs4_do_fsinfo(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fsinfo
*fsinfo
)
3994 struct nfs4_exception exception
= { };
3995 unsigned long now
= jiffies
;
3999 err
= _nfs4_do_fsinfo(server
, fhandle
, fsinfo
);
4000 trace_nfs4_fsinfo(server
, fhandle
, fsinfo
->fattr
, err
);
4002 struct nfs_client
*clp
= server
->nfs_client
;
4004 spin_lock(&clp
->cl_lock
);
4005 clp
->cl_lease_time
= fsinfo
->lease_time
* HZ
;
4006 clp
->cl_last_renewal
= now
;
4007 spin_unlock(&clp
->cl_lock
);
4010 err
= nfs4_handle_exception(server
, err
, &exception
);
4011 } while (exception
.retry
);
4015 static int nfs4_proc_fsinfo(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fsinfo
*fsinfo
)
4019 nfs_fattr_init(fsinfo
->fattr
);
4020 error
= nfs4_do_fsinfo(server
, fhandle
, fsinfo
);
4022 /* block layout checks this! */
4023 server
->pnfs_blksize
= fsinfo
->blksize
;
4024 set_pnfs_layoutdriver(server
, fhandle
, fsinfo
->layouttype
);
4030 static int _nfs4_proc_pathconf(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
4031 struct nfs_pathconf
*pathconf
)
4033 struct nfs4_pathconf_arg args
= {
4035 .bitmask
= server
->attr_bitmask
,
4037 struct nfs4_pathconf_res res
= {
4038 .pathconf
= pathconf
,
4040 struct rpc_message msg
= {
4041 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_PATHCONF
],
4046 /* None of the pathconf attributes are mandatory to implement */
4047 if ((args
.bitmask
[0] & nfs4_pathconf_bitmap
[0]) == 0) {
4048 memset(pathconf
, 0, sizeof(*pathconf
));
4052 nfs_fattr_init(pathconf
->fattr
);
4053 return nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
4056 static int nfs4_proc_pathconf(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
4057 struct nfs_pathconf
*pathconf
)
4059 struct nfs4_exception exception
= { };
4063 err
= nfs4_handle_exception(server
,
4064 _nfs4_proc_pathconf(server
, fhandle
, pathconf
),
4066 } while (exception
.retry
);
4070 int nfs4_set_rw_stateid(nfs4_stateid
*stateid
,
4071 const struct nfs_open_context
*ctx
,
4072 const struct nfs_lock_context
*l_ctx
,
4075 const struct nfs_lockowner
*lockowner
= NULL
;
4078 lockowner
= &l_ctx
->lockowner
;
4079 return nfs4_select_rw_stateid(stateid
, ctx
->state
, fmode
, lockowner
);
4081 EXPORT_SYMBOL_GPL(nfs4_set_rw_stateid
);
4083 static bool nfs4_stateid_is_current(nfs4_stateid
*stateid
,
4084 const struct nfs_open_context
*ctx
,
4085 const struct nfs_lock_context
*l_ctx
,
4088 nfs4_stateid current_stateid
;
4090 /* If the current stateid represents a lost lock, then exit */
4091 if (nfs4_set_rw_stateid(¤t_stateid
, ctx
, l_ctx
, fmode
) == -EIO
)
4093 return nfs4_stateid_match(stateid
, ¤t_stateid
);
4096 static bool nfs4_error_stateid_expired(int err
)
4099 case -NFS4ERR_DELEG_REVOKED
:
4100 case -NFS4ERR_ADMIN_REVOKED
:
4101 case -NFS4ERR_BAD_STATEID
:
4102 case -NFS4ERR_STALE_STATEID
:
4103 case -NFS4ERR_OLD_STATEID
:
4104 case -NFS4ERR_OPENMODE
:
4105 case -NFS4ERR_EXPIRED
:
4111 void __nfs4_read_done_cb(struct nfs_pgio_header
*hdr
)
4113 nfs_invalidate_atime(hdr
->inode
);
4116 static int nfs4_read_done_cb(struct rpc_task
*task
, struct nfs_pgio_header
*hdr
)
4118 struct nfs_server
*server
= NFS_SERVER(hdr
->inode
);
4120 trace_nfs4_read(hdr
, task
->tk_status
);
4121 if (nfs4_async_handle_error(task
, server
,
4122 hdr
->args
.context
->state
,
4124 rpc_restart_call_prepare(task
);
4128 __nfs4_read_done_cb(hdr
);
4129 if (task
->tk_status
> 0)
4130 renew_lease(server
, hdr
->timestamp
);
4134 static bool nfs4_read_stateid_changed(struct rpc_task
*task
,
4135 struct nfs_pgio_args
*args
)
4138 if (!nfs4_error_stateid_expired(task
->tk_status
) ||
4139 nfs4_stateid_is_current(&args
->stateid
,
4144 rpc_restart_call_prepare(task
);
4148 static int nfs4_read_done(struct rpc_task
*task
, struct nfs_pgio_header
*hdr
)
4151 dprintk("--> %s\n", __func__
);
4153 if (!nfs4_sequence_done(task
, &hdr
->res
.seq_res
))
4155 if (nfs4_read_stateid_changed(task
, &hdr
->args
))
4157 return hdr
->pgio_done_cb
? hdr
->pgio_done_cb(task
, hdr
) :
4158 nfs4_read_done_cb(task
, hdr
);
4161 static void nfs4_proc_read_setup(struct nfs_pgio_header
*hdr
,
4162 struct rpc_message
*msg
)
4164 hdr
->timestamp
= jiffies
;
4165 hdr
->pgio_done_cb
= nfs4_read_done_cb
;
4166 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_READ
];
4167 nfs4_init_sequence(&hdr
->args
.seq_args
, &hdr
->res
.seq_res
, 0);
4170 static int nfs4_proc_pgio_rpc_prepare(struct rpc_task
*task
,
4171 struct nfs_pgio_header
*hdr
)
4173 if (nfs4_setup_sequence(NFS_SERVER(hdr
->inode
),
4174 &hdr
->args
.seq_args
,
4178 if (nfs4_set_rw_stateid(&hdr
->args
.stateid
, hdr
->args
.context
,
4179 hdr
->args
.lock_context
,
4180 hdr
->rw_ops
->rw_mode
) == -EIO
)
4182 if (unlikely(test_bit(NFS_CONTEXT_BAD
, &hdr
->args
.context
->flags
)))
4187 static int nfs4_write_done_cb(struct rpc_task
*task
,
4188 struct nfs_pgio_header
*hdr
)
4190 struct inode
*inode
= hdr
->inode
;
4192 trace_nfs4_write(hdr
, task
->tk_status
);
4193 if (nfs4_async_handle_error(task
, NFS_SERVER(inode
),
4194 hdr
->args
.context
->state
,
4196 rpc_restart_call_prepare(task
);
4199 if (task
->tk_status
>= 0) {
4200 renew_lease(NFS_SERVER(inode
), hdr
->timestamp
);
4201 nfs_post_op_update_inode_force_wcc(inode
, &hdr
->fattr
);
4206 static bool nfs4_write_stateid_changed(struct rpc_task
*task
,
4207 struct nfs_pgio_args
*args
)
4210 if (!nfs4_error_stateid_expired(task
->tk_status
) ||
4211 nfs4_stateid_is_current(&args
->stateid
,
4216 rpc_restart_call_prepare(task
);
4220 static int nfs4_write_done(struct rpc_task
*task
, struct nfs_pgio_header
*hdr
)
4222 if (!nfs4_sequence_done(task
, &hdr
->res
.seq_res
))
4224 if (nfs4_write_stateid_changed(task
, &hdr
->args
))
4226 return hdr
->pgio_done_cb
? hdr
->pgio_done_cb(task
, hdr
) :
4227 nfs4_write_done_cb(task
, hdr
);
4231 bool nfs4_write_need_cache_consistency_data(struct nfs_pgio_header
*hdr
)
4233 /* Don't request attributes for pNFS or O_DIRECT writes */
4234 if (hdr
->ds_clp
!= NULL
|| hdr
->dreq
!= NULL
)
4236 /* Otherwise, request attributes if and only if we don't hold
4239 return nfs4_have_delegation(hdr
->inode
, FMODE_READ
) == 0;
4242 static void nfs4_proc_write_setup(struct nfs_pgio_header
*hdr
,
4243 struct rpc_message
*msg
)
4245 struct nfs_server
*server
= NFS_SERVER(hdr
->inode
);
4247 if (!nfs4_write_need_cache_consistency_data(hdr
)) {
4248 hdr
->args
.bitmask
= NULL
;
4249 hdr
->res
.fattr
= NULL
;
4251 hdr
->args
.bitmask
= server
->cache_consistency_bitmask
;
4253 if (!hdr
->pgio_done_cb
)
4254 hdr
->pgio_done_cb
= nfs4_write_done_cb
;
4255 hdr
->res
.server
= server
;
4256 hdr
->timestamp
= jiffies
;
4258 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_WRITE
];
4259 nfs4_init_sequence(&hdr
->args
.seq_args
, &hdr
->res
.seq_res
, 1);
4262 static void nfs4_proc_commit_rpc_prepare(struct rpc_task
*task
, struct nfs_commit_data
*data
)
4264 nfs4_setup_sequence(NFS_SERVER(data
->inode
),
4265 &data
->args
.seq_args
,
4270 static int nfs4_commit_done_cb(struct rpc_task
*task
, struct nfs_commit_data
*data
)
4272 struct inode
*inode
= data
->inode
;
4274 trace_nfs4_commit(data
, task
->tk_status
);
4275 if (nfs4_async_handle_error(task
, NFS_SERVER(inode
),
4276 NULL
, NULL
) == -EAGAIN
) {
4277 rpc_restart_call_prepare(task
);
4283 static int nfs4_commit_done(struct rpc_task
*task
, struct nfs_commit_data
*data
)
4285 if (!nfs4_sequence_done(task
, &data
->res
.seq_res
))
4287 return data
->commit_done_cb(task
, data
);
4290 static void nfs4_proc_commit_setup(struct nfs_commit_data
*data
, struct rpc_message
*msg
)
4292 struct nfs_server
*server
= NFS_SERVER(data
->inode
);
4294 if (data
->commit_done_cb
== NULL
)
4295 data
->commit_done_cb
= nfs4_commit_done_cb
;
4296 data
->res
.server
= server
;
4297 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_COMMIT
];
4298 nfs4_init_sequence(&data
->args
.seq_args
, &data
->res
.seq_res
, 1);
4301 struct nfs4_renewdata
{
4302 struct nfs_client
*client
;
4303 unsigned long timestamp
;
4307 * nfs4_proc_async_renew(): This is not one of the nfs_rpc_ops; it is a special
4308 * standalone procedure for queueing an asynchronous RENEW.
4310 static void nfs4_renew_release(void *calldata
)
4312 struct nfs4_renewdata
*data
= calldata
;
4313 struct nfs_client
*clp
= data
->client
;
4315 if (atomic_read(&clp
->cl_count
) > 1)
4316 nfs4_schedule_state_renewal(clp
);
4317 nfs_put_client(clp
);
4321 static void nfs4_renew_done(struct rpc_task
*task
, void *calldata
)
4323 struct nfs4_renewdata
*data
= calldata
;
4324 struct nfs_client
*clp
= data
->client
;
4325 unsigned long timestamp
= data
->timestamp
;
4327 trace_nfs4_renew_async(clp
, task
->tk_status
);
4328 switch (task
->tk_status
) {
4331 case -NFS4ERR_LEASE_MOVED
:
4332 nfs4_schedule_lease_moved_recovery(clp
);
4335 /* Unless we're shutting down, schedule state recovery! */
4336 if (test_bit(NFS_CS_RENEWD
, &clp
->cl_res_state
) == 0)
4338 if (task
->tk_status
!= NFS4ERR_CB_PATH_DOWN
) {
4339 nfs4_schedule_lease_recovery(clp
);
4342 nfs4_schedule_path_down_recovery(clp
);
4344 do_renew_lease(clp
, timestamp
);
4347 static const struct rpc_call_ops nfs4_renew_ops
= {
4348 .rpc_call_done
= nfs4_renew_done
,
4349 .rpc_release
= nfs4_renew_release
,
4352 static int nfs4_proc_async_renew(struct nfs_client
*clp
, struct rpc_cred
*cred
, unsigned renew_flags
)
4354 struct rpc_message msg
= {
4355 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RENEW
],
4359 struct nfs4_renewdata
*data
;
4361 if (renew_flags
== 0)
4363 if (!atomic_inc_not_zero(&clp
->cl_count
))
4365 data
= kmalloc(sizeof(*data
), GFP_NOFS
);
4369 data
->timestamp
= jiffies
;
4370 return rpc_call_async(clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
,
4371 &nfs4_renew_ops
, data
);
4374 static int nfs4_proc_renew(struct nfs_client
*clp
, struct rpc_cred
*cred
)
4376 struct rpc_message msg
= {
4377 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RENEW
],
4381 unsigned long now
= jiffies
;
4384 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
4387 do_renew_lease(clp
, now
);
4391 static inline int nfs4_server_supports_acls(struct nfs_server
*server
)
4393 return server
->caps
& NFS_CAP_ACLS
;
4396 /* Assuming that XATTR_SIZE_MAX is a multiple of PAGE_SIZE, and that
4397 * it's OK to put sizeof(void) * (XATTR_SIZE_MAX/PAGE_SIZE) bytes on
4400 #define NFS4ACL_MAXPAGES DIV_ROUND_UP(XATTR_SIZE_MAX, PAGE_SIZE)
4402 static int buf_to_pages_noslab(const void *buf
, size_t buflen
,
4403 struct page
**pages
, unsigned int *pgbase
)
4405 struct page
*newpage
, **spages
;
4411 len
= min_t(size_t, PAGE_SIZE
, buflen
);
4412 newpage
= alloc_page(GFP_KERNEL
);
4414 if (newpage
== NULL
)
4416 memcpy(page_address(newpage
), buf
, len
);
4421 } while (buflen
!= 0);
4427 __free_page(spages
[rc
-1]);
4431 struct nfs4_cached_acl
{
4437 static void nfs4_set_cached_acl(struct inode
*inode
, struct nfs4_cached_acl
*acl
)
4439 struct nfs_inode
*nfsi
= NFS_I(inode
);
4441 spin_lock(&inode
->i_lock
);
4442 kfree(nfsi
->nfs4_acl
);
4443 nfsi
->nfs4_acl
= acl
;
4444 spin_unlock(&inode
->i_lock
);
4447 static void nfs4_zap_acl_attr(struct inode
*inode
)
4449 nfs4_set_cached_acl(inode
, NULL
);
4452 static inline ssize_t
nfs4_read_cached_acl(struct inode
*inode
, char *buf
, size_t buflen
)
4454 struct nfs_inode
*nfsi
= NFS_I(inode
);
4455 struct nfs4_cached_acl
*acl
;
4458 spin_lock(&inode
->i_lock
);
4459 acl
= nfsi
->nfs4_acl
;
4462 if (buf
== NULL
) /* user is just asking for length */
4464 if (acl
->cached
== 0)
4466 ret
= -ERANGE
; /* see getxattr(2) man page */
4467 if (acl
->len
> buflen
)
4469 memcpy(buf
, acl
->data
, acl
->len
);
4473 spin_unlock(&inode
->i_lock
);
4477 static void nfs4_write_cached_acl(struct inode
*inode
, struct page
**pages
, size_t pgbase
, size_t acl_len
)
4479 struct nfs4_cached_acl
*acl
;
4480 size_t buflen
= sizeof(*acl
) + acl_len
;
4482 if (buflen
<= PAGE_SIZE
) {
4483 acl
= kmalloc(buflen
, GFP_KERNEL
);
4487 _copy_from_pages(acl
->data
, pages
, pgbase
, acl_len
);
4489 acl
= kmalloc(sizeof(*acl
), GFP_KERNEL
);
4496 nfs4_set_cached_acl(inode
, acl
);
4500 * The getxattr API returns the required buffer length when called with a
4501 * NULL buf. The NFSv4 acl tool then calls getxattr again after allocating
4502 * the required buf. On a NULL buf, we send a page of data to the server
4503 * guessing that the ACL request can be serviced by a page. If so, we cache
4504 * up to the page of ACL data, and the 2nd call to getxattr is serviced by
4505 * the cache. If not so, we throw away the page, and cache the required
4506 * length. The next getxattr call will then produce another round trip to
4507 * the server, this time with the input buf of the required size.
4509 static ssize_t
__nfs4_get_acl_uncached(struct inode
*inode
, void *buf
, size_t buflen
)
4511 struct page
*pages
[NFS4ACL_MAXPAGES
] = {NULL
, };
4512 struct nfs_getaclargs args
= {
4513 .fh
= NFS_FH(inode
),
4517 struct nfs_getaclres res
= {
4520 struct rpc_message msg
= {
4521 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GETACL
],
4525 unsigned int npages
= DIV_ROUND_UP(buflen
, PAGE_SIZE
);
4526 int ret
= -ENOMEM
, i
;
4528 /* As long as we're doing a round trip to the server anyway,
4529 * let's be prepared for a page of acl data. */
4532 if (npages
> ARRAY_SIZE(pages
))
4535 for (i
= 0; i
< npages
; i
++) {
4536 pages
[i
] = alloc_page(GFP_KERNEL
);
4541 /* for decoding across pages */
4542 res
.acl_scratch
= alloc_page(GFP_KERNEL
);
4543 if (!res
.acl_scratch
)
4546 args
.acl_len
= npages
* PAGE_SIZE
;
4547 args
.acl_pgbase
= 0;
4549 dprintk("%s buf %p buflen %zu npages %d args.acl_len %zu\n",
4550 __func__
, buf
, buflen
, npages
, args
.acl_len
);
4551 ret
= nfs4_call_sync(NFS_SERVER(inode
)->client
, NFS_SERVER(inode
),
4552 &msg
, &args
.seq_args
, &res
.seq_res
, 0);
4556 /* Handle the case where the passed-in buffer is too short */
4557 if (res
.acl_flags
& NFS4_ACL_TRUNC
) {
4558 /* Did the user only issue a request for the acl length? */
4564 nfs4_write_cached_acl(inode
, pages
, res
.acl_data_offset
, res
.acl_len
);
4566 if (res
.acl_len
> buflen
) {
4570 _copy_from_pages(buf
, pages
, res
.acl_data_offset
, res
.acl_len
);
4575 for (i
= 0; i
< npages
; i
++)
4577 __free_page(pages
[i
]);
4578 if (res
.acl_scratch
)
4579 __free_page(res
.acl_scratch
);
4583 static ssize_t
nfs4_get_acl_uncached(struct inode
*inode
, void *buf
, size_t buflen
)
4585 struct nfs4_exception exception
= { };
4588 ret
= __nfs4_get_acl_uncached(inode
, buf
, buflen
);
4589 trace_nfs4_get_acl(inode
, ret
);
4592 ret
= nfs4_handle_exception(NFS_SERVER(inode
), ret
, &exception
);
4593 } while (exception
.retry
);
4597 static ssize_t
nfs4_proc_get_acl(struct inode
*inode
, void *buf
, size_t buflen
)
4599 struct nfs_server
*server
= NFS_SERVER(inode
);
4602 if (!nfs4_server_supports_acls(server
))
4604 ret
= nfs_revalidate_inode(server
, inode
);
4607 if (NFS_I(inode
)->cache_validity
& NFS_INO_INVALID_ACL
)
4608 nfs_zap_acl_cache(inode
);
4609 ret
= nfs4_read_cached_acl(inode
, buf
, buflen
);
4611 /* -ENOENT is returned if there is no ACL or if there is an ACL
4612 * but no cached acl data, just the acl length */
4614 return nfs4_get_acl_uncached(inode
, buf
, buflen
);
4617 static int __nfs4_proc_set_acl(struct inode
*inode
, const void *buf
, size_t buflen
)
4619 struct nfs_server
*server
= NFS_SERVER(inode
);
4620 struct page
*pages
[NFS4ACL_MAXPAGES
];
4621 struct nfs_setaclargs arg
= {
4622 .fh
= NFS_FH(inode
),
4626 struct nfs_setaclres res
;
4627 struct rpc_message msg
= {
4628 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETACL
],
4632 unsigned int npages
= DIV_ROUND_UP(buflen
, PAGE_SIZE
);
4635 if (!nfs4_server_supports_acls(server
))
4637 if (npages
> ARRAY_SIZE(pages
))
4639 i
= buf_to_pages_noslab(buf
, buflen
, arg
.acl_pages
, &arg
.acl_pgbase
);
4642 nfs4_inode_return_delegation(inode
);
4643 ret
= nfs4_call_sync(server
->client
, server
, &msg
, &arg
.seq_args
, &res
.seq_res
, 1);
4646 * Free each page after tx, so the only ref left is
4647 * held by the network stack
4650 put_page(pages
[i
-1]);
4653 * Acl update can result in inode attribute update.
4654 * so mark the attribute cache invalid.
4656 spin_lock(&inode
->i_lock
);
4657 NFS_I(inode
)->cache_validity
|= NFS_INO_INVALID_ATTR
;
4658 spin_unlock(&inode
->i_lock
);
4659 nfs_access_zap_cache(inode
);
4660 nfs_zap_acl_cache(inode
);
4664 static int nfs4_proc_set_acl(struct inode
*inode
, const void *buf
, size_t buflen
)
4666 struct nfs4_exception exception
= { };
4669 err
= __nfs4_proc_set_acl(inode
, buf
, buflen
);
4670 trace_nfs4_set_acl(inode
, err
);
4671 err
= nfs4_handle_exception(NFS_SERVER(inode
), err
,
4673 } while (exception
.retry
);
4677 #ifdef CONFIG_NFS_V4_SECURITY_LABEL
4678 static int _nfs4_get_security_label(struct inode
*inode
, void *buf
,
4681 struct nfs_server
*server
= NFS_SERVER(inode
);
4682 struct nfs_fattr fattr
;
4683 struct nfs4_label label
= {0, 0, buflen
, buf
};
4685 u32 bitmask
[3] = { 0, 0, FATTR4_WORD2_SECURITY_LABEL
};
4686 struct nfs4_getattr_arg arg
= {
4687 .fh
= NFS_FH(inode
),
4690 struct nfs4_getattr_res res
= {
4695 struct rpc_message msg
= {
4696 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GETATTR
],
4702 nfs_fattr_init(&fattr
);
4704 ret
= nfs4_call_sync(server
->client
, server
, &msg
, &arg
.seq_args
, &res
.seq_res
, 0);
4707 if (!(fattr
.valid
& NFS_ATTR_FATTR_V4_SECURITY_LABEL
))
4709 if (buflen
< label
.len
)
4714 static int nfs4_get_security_label(struct inode
*inode
, void *buf
,
4717 struct nfs4_exception exception
= { };
4720 if (!nfs_server_capable(inode
, NFS_CAP_SECURITY_LABEL
))
4724 err
= _nfs4_get_security_label(inode
, buf
, buflen
);
4725 trace_nfs4_get_security_label(inode
, err
);
4726 err
= nfs4_handle_exception(NFS_SERVER(inode
), err
,
4728 } while (exception
.retry
);
4732 static int _nfs4_do_set_security_label(struct inode
*inode
,
4733 struct nfs4_label
*ilabel
,
4734 struct nfs_fattr
*fattr
,
4735 struct nfs4_label
*olabel
)
4738 struct iattr sattr
= {0};
4739 struct nfs_server
*server
= NFS_SERVER(inode
);
4740 const u32 bitmask
[3] = { 0, 0, FATTR4_WORD2_SECURITY_LABEL
};
4741 struct nfs_setattrargs arg
= {
4742 .fh
= NFS_FH(inode
),
4748 struct nfs_setattrres res
= {
4753 struct rpc_message msg
= {
4754 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETATTR
],
4760 nfs4_stateid_copy(&arg
.stateid
, &zero_stateid
);
4762 status
= nfs4_call_sync(server
->client
, server
, &msg
, &arg
.seq_args
, &res
.seq_res
, 1);
4764 dprintk("%s failed: %d\n", __func__
, status
);
4769 static int nfs4_do_set_security_label(struct inode
*inode
,
4770 struct nfs4_label
*ilabel
,
4771 struct nfs_fattr
*fattr
,
4772 struct nfs4_label
*olabel
)
4774 struct nfs4_exception exception
= { };
4778 err
= _nfs4_do_set_security_label(inode
, ilabel
,
4780 trace_nfs4_set_security_label(inode
, err
);
4781 err
= nfs4_handle_exception(NFS_SERVER(inode
), err
,
4783 } while (exception
.retry
);
4788 nfs4_set_security_label(struct dentry
*dentry
, const void *buf
, size_t buflen
)
4790 struct nfs4_label ilabel
, *olabel
= NULL
;
4791 struct nfs_fattr fattr
;
4792 struct rpc_cred
*cred
;
4793 struct inode
*inode
= dentry
->d_inode
;
4796 if (!nfs_server_capable(inode
, NFS_CAP_SECURITY_LABEL
))
4799 nfs_fattr_init(&fattr
);
4803 ilabel
.label
= (char *)buf
;
4804 ilabel
.len
= buflen
;
4806 cred
= rpc_lookup_cred();
4808 return PTR_ERR(cred
);
4810 olabel
= nfs4_label_alloc(NFS_SERVER(inode
), GFP_KERNEL
);
4811 if (IS_ERR(olabel
)) {
4812 status
= -PTR_ERR(olabel
);
4816 status
= nfs4_do_set_security_label(inode
, &ilabel
, &fattr
, olabel
);
4818 nfs_setsecurity(inode
, &fattr
, olabel
);
4820 nfs4_label_free(olabel
);
4825 #endif /* CONFIG_NFS_V4_SECURITY_LABEL */
4829 nfs4_async_handle_error(struct rpc_task
*task
, const struct nfs_server
*server
,
4830 struct nfs4_state
*state
, long *timeout
)
4832 struct nfs_client
*clp
= server
->nfs_client
;
4834 if (task
->tk_status
>= 0)
4836 switch(task
->tk_status
) {
4837 case -NFS4ERR_DELEG_REVOKED
:
4838 case -NFS4ERR_ADMIN_REVOKED
:
4839 case -NFS4ERR_BAD_STATEID
:
4840 case -NFS4ERR_OPENMODE
:
4843 if (nfs4_schedule_stateid_recovery(server
, state
) < 0)
4844 goto recovery_failed
;
4845 goto wait_on_recovery
;
4846 case -NFS4ERR_EXPIRED
:
4847 if (state
!= NULL
) {
4848 if (nfs4_schedule_stateid_recovery(server
, state
) < 0)
4849 goto recovery_failed
;
4851 case -NFS4ERR_STALE_STATEID
:
4852 case -NFS4ERR_STALE_CLIENTID
:
4853 nfs4_schedule_lease_recovery(clp
);
4854 goto wait_on_recovery
;
4855 case -NFS4ERR_MOVED
:
4856 if (nfs4_schedule_migration_recovery(server
) < 0)
4857 goto recovery_failed
;
4858 goto wait_on_recovery
;
4859 case -NFS4ERR_LEASE_MOVED
:
4860 nfs4_schedule_lease_moved_recovery(clp
);
4861 goto wait_on_recovery
;
4862 #if defined(CONFIG_NFS_V4_1)
4863 case -NFS4ERR_BADSESSION
:
4864 case -NFS4ERR_BADSLOT
:
4865 case -NFS4ERR_BAD_HIGH_SLOT
:
4866 case -NFS4ERR_DEADSESSION
:
4867 case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION
:
4868 case -NFS4ERR_SEQ_FALSE_RETRY
:
4869 case -NFS4ERR_SEQ_MISORDERED
:
4870 dprintk("%s ERROR %d, Reset session\n", __func__
,
4872 nfs4_schedule_session_recovery(clp
->cl_session
, task
->tk_status
);
4873 goto wait_on_recovery
;
4874 #endif /* CONFIG_NFS_V4_1 */
4875 case -NFS4ERR_DELAY
:
4876 nfs_inc_server_stats(server
, NFSIOS_DELAY
);
4877 rpc_delay(task
, nfs4_update_delay(timeout
));
4879 case -NFS4ERR_GRACE
:
4880 rpc_delay(task
, NFS4_POLL_RETRY_MAX
);
4881 case -NFS4ERR_RETRY_UNCACHED_REP
:
4882 case -NFS4ERR_OLD_STATEID
:
4885 task
->tk_status
= nfs4_map_errors(task
->tk_status
);
4888 task
->tk_status
= -EIO
;
4891 rpc_sleep_on(&clp
->cl_rpcwaitq
, task
, NULL
);
4892 if (test_bit(NFS4CLNT_MANAGER_RUNNING
, &clp
->cl_state
) == 0)
4893 rpc_wake_up_queued_task(&clp
->cl_rpcwaitq
, task
);
4894 if (test_bit(NFS_MIG_FAILED
, &server
->mig_status
))
4895 goto recovery_failed
;
4897 task
->tk_status
= 0;
4901 static void nfs4_init_boot_verifier(const struct nfs_client
*clp
,
4902 nfs4_verifier
*bootverf
)
4906 if (test_bit(NFS4CLNT_PURGE_STATE
, &clp
->cl_state
)) {
4907 /* An impossible timestamp guarantees this value
4908 * will never match a generated boot time. */
4910 verf
[1] = cpu_to_be32(NSEC_PER_SEC
+ 1);
4912 struct nfs_net
*nn
= net_generic(clp
->cl_net
, nfs_net_id
);
4913 verf
[0] = cpu_to_be32(nn
->boot_time
.tv_sec
);
4914 verf
[1] = cpu_to_be32(nn
->boot_time
.tv_nsec
);
4916 memcpy(bootverf
->data
, verf
, sizeof(bootverf
->data
));
4920 nfs4_init_nonuniform_client_string(const struct nfs_client
*clp
,
4921 char *buf
, size_t len
)
4923 unsigned int result
;
4926 result
= scnprintf(buf
, len
, "Linux NFSv4.0 %s/%s %s",
4928 rpc_peeraddr2str(clp
->cl_rpcclient
,
4930 rpc_peeraddr2str(clp
->cl_rpcclient
,
4931 RPC_DISPLAY_PROTO
));
4937 nfs4_init_uniform_client_string(const struct nfs_client
*clp
,
4938 char *buf
, size_t len
)
4940 const char *nodename
= clp
->cl_rpcclient
->cl_nodename
;
4942 if (nfs4_client_id_uniquifier
[0] != '\0')
4943 return scnprintf(buf
, len
, "Linux NFSv%u.%u %s/%s",
4944 clp
->rpc_ops
->version
,
4945 clp
->cl_minorversion
,
4946 nfs4_client_id_uniquifier
,
4948 return scnprintf(buf
, len
, "Linux NFSv%u.%u %s",
4949 clp
->rpc_ops
->version
, clp
->cl_minorversion
,
4954 * nfs4_callback_up_net() starts only "tcp" and "tcp6" callback
4955 * services. Advertise one based on the address family of the
4959 nfs4_init_callback_netid(const struct nfs_client
*clp
, char *buf
, size_t len
)
4961 if (strchr(clp
->cl_ipaddr
, ':') != NULL
)
4962 return scnprintf(buf
, len
, "tcp6");
4964 return scnprintf(buf
, len
, "tcp");
4967 static void nfs4_setclientid_done(struct rpc_task
*task
, void *calldata
)
4969 struct nfs4_setclientid
*sc
= calldata
;
4971 if (task
->tk_status
== 0)
4972 sc
->sc_cred
= get_rpccred(task
->tk_rqstp
->rq_cred
);
4975 static const struct rpc_call_ops nfs4_setclientid_ops
= {
4976 .rpc_call_done
= nfs4_setclientid_done
,
4980 * nfs4_proc_setclientid - Negotiate client ID
4981 * @clp: state data structure
4982 * @program: RPC program for NFSv4 callback service
4983 * @port: IP port number for NFS4 callback service
4984 * @cred: RPC credential to use for this call
4985 * @res: where to place the result
4987 * Returns zero, a negative errno, or a negative NFS4ERR status code.
4989 int nfs4_proc_setclientid(struct nfs_client
*clp
, u32 program
,
4990 unsigned short port
, struct rpc_cred
*cred
,
4991 struct nfs4_setclientid_res
*res
)
4993 nfs4_verifier sc_verifier
;
4994 struct nfs4_setclientid setclientid
= {
4995 .sc_verifier
= &sc_verifier
,
4997 .sc_cb_ident
= clp
->cl_cb_ident
,
4999 struct rpc_message msg
= {
5000 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETCLIENTID
],
5001 .rpc_argp
= &setclientid
,
5005 struct rpc_task
*task
;
5006 struct rpc_task_setup task_setup_data
= {
5007 .rpc_client
= clp
->cl_rpcclient
,
5008 .rpc_message
= &msg
,
5009 .callback_ops
= &nfs4_setclientid_ops
,
5010 .callback_data
= &setclientid
,
5011 .flags
= RPC_TASK_TIMEOUT
,
5015 /* nfs_client_id4 */
5016 nfs4_init_boot_verifier(clp
, &sc_verifier
);
5017 if (test_bit(NFS_CS_MIGRATION
, &clp
->cl_flags
))
5018 setclientid
.sc_name_len
=
5019 nfs4_init_uniform_client_string(clp
,
5020 setclientid
.sc_name
,
5021 sizeof(setclientid
.sc_name
));
5023 setclientid
.sc_name_len
=
5024 nfs4_init_nonuniform_client_string(clp
,
5025 setclientid
.sc_name
,
5026 sizeof(setclientid
.sc_name
));
5028 setclientid
.sc_netid_len
=
5029 nfs4_init_callback_netid(clp
,
5030 setclientid
.sc_netid
,
5031 sizeof(setclientid
.sc_netid
));
5032 setclientid
.sc_uaddr_len
= scnprintf(setclientid
.sc_uaddr
,
5033 sizeof(setclientid
.sc_uaddr
), "%s.%u.%u",
5034 clp
->cl_ipaddr
, port
>> 8, port
& 255);
5036 dprintk("NFS call setclientid auth=%s, '%.*s'\n",
5037 clp
->cl_rpcclient
->cl_auth
->au_ops
->au_name
,
5038 setclientid
.sc_name_len
, setclientid
.sc_name
);
5039 task
= rpc_run_task(&task_setup_data
);
5041 status
= PTR_ERR(task
);
5044 status
= task
->tk_status
;
5045 if (setclientid
.sc_cred
) {
5046 clp
->cl_acceptor
= rpcauth_stringify_acceptor(setclientid
.sc_cred
);
5047 put_rpccred(setclientid
.sc_cred
);
5051 trace_nfs4_setclientid(clp
, status
);
5052 dprintk("NFS reply setclientid: %d\n", status
);
5057 * nfs4_proc_setclientid_confirm - Confirm client ID
5058 * @clp: state data structure
5059 * @res: result of a previous SETCLIENTID
5060 * @cred: RPC credential to use for this call
5062 * Returns zero, a negative errno, or a negative NFS4ERR status code.
5064 int nfs4_proc_setclientid_confirm(struct nfs_client
*clp
,
5065 struct nfs4_setclientid_res
*arg
,
5066 struct rpc_cred
*cred
)
5068 struct rpc_message msg
= {
5069 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETCLIENTID_CONFIRM
],
5075 dprintk("NFS call setclientid_confirm auth=%s, (client ID %llx)\n",
5076 clp
->cl_rpcclient
->cl_auth
->au_ops
->au_name
,
5078 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
5079 trace_nfs4_setclientid_confirm(clp
, status
);
5080 dprintk("NFS reply setclientid_confirm: %d\n", status
);
5084 struct nfs4_delegreturndata
{
5085 struct nfs4_delegreturnargs args
;
5086 struct nfs4_delegreturnres res
;
5088 nfs4_stateid stateid
;
5089 unsigned long timestamp
;
5090 struct nfs_fattr fattr
;
5092 struct inode
*inode
;
5097 static void nfs4_delegreturn_done(struct rpc_task
*task
, void *calldata
)
5099 struct nfs4_delegreturndata
*data
= calldata
;
5101 if (!nfs4_sequence_done(task
, &data
->res
.seq_res
))
5104 trace_nfs4_delegreturn_exit(&data
->args
, &data
->res
, task
->tk_status
);
5105 switch (task
->tk_status
) {
5107 renew_lease(data
->res
.server
, data
->timestamp
);
5108 case -NFS4ERR_ADMIN_REVOKED
:
5109 case -NFS4ERR_DELEG_REVOKED
:
5110 case -NFS4ERR_BAD_STATEID
:
5111 case -NFS4ERR_OLD_STATEID
:
5112 case -NFS4ERR_STALE_STATEID
:
5113 case -NFS4ERR_EXPIRED
:
5114 task
->tk_status
= 0;
5116 pnfs_roc_set_barrier(data
->inode
, data
->roc_barrier
);
5119 if (nfs4_async_handle_error(task
, data
->res
.server
,
5120 NULL
, NULL
) == -EAGAIN
) {
5121 rpc_restart_call_prepare(task
);
5125 data
->rpc_status
= task
->tk_status
;
5128 static void nfs4_delegreturn_release(void *calldata
)
5130 struct nfs4_delegreturndata
*data
= calldata
;
5133 pnfs_roc_release(data
->inode
);
5137 static void nfs4_delegreturn_prepare(struct rpc_task
*task
, void *data
)
5139 struct nfs4_delegreturndata
*d_data
;
5141 d_data
= (struct nfs4_delegreturndata
*)data
;
5144 pnfs_roc_drain(d_data
->inode
, &d_data
->roc_barrier
, task
))
5147 nfs4_setup_sequence(d_data
->res
.server
,
5148 &d_data
->args
.seq_args
,
5149 &d_data
->res
.seq_res
,
5153 static const struct rpc_call_ops nfs4_delegreturn_ops
= {
5154 .rpc_call_prepare
= nfs4_delegreturn_prepare
,
5155 .rpc_call_done
= nfs4_delegreturn_done
,
5156 .rpc_release
= nfs4_delegreturn_release
,
5159 static int _nfs4_proc_delegreturn(struct inode
*inode
, struct rpc_cred
*cred
, const nfs4_stateid
*stateid
, int issync
)
5161 struct nfs4_delegreturndata
*data
;
5162 struct nfs_server
*server
= NFS_SERVER(inode
);
5163 struct rpc_task
*task
;
5164 struct rpc_message msg
= {
5165 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_DELEGRETURN
],
5168 struct rpc_task_setup task_setup_data
= {
5169 .rpc_client
= server
->client
,
5170 .rpc_message
= &msg
,
5171 .callback_ops
= &nfs4_delegreturn_ops
,
5172 .flags
= RPC_TASK_ASYNC
,
5176 data
= kzalloc(sizeof(*data
), GFP_NOFS
);
5179 nfs4_init_sequence(&data
->args
.seq_args
, &data
->res
.seq_res
, 1);
5180 data
->args
.fhandle
= &data
->fh
;
5181 data
->args
.stateid
= &data
->stateid
;
5182 data
->args
.bitmask
= server
->cache_consistency_bitmask
;
5183 nfs_copy_fh(&data
->fh
, NFS_FH(inode
));
5184 nfs4_stateid_copy(&data
->stateid
, stateid
);
5185 data
->res
.fattr
= &data
->fattr
;
5186 data
->res
.server
= server
;
5187 nfs_fattr_init(data
->res
.fattr
);
5188 data
->timestamp
= jiffies
;
5189 data
->rpc_status
= 0;
5190 data
->inode
= inode
;
5191 data
->roc
= list_empty(&NFS_I(inode
)->open_files
) ?
5192 pnfs_roc(inode
) : false;
5194 task_setup_data
.callback_data
= data
;
5195 msg
.rpc_argp
= &data
->args
;
5196 msg
.rpc_resp
= &data
->res
;
5197 task
= rpc_run_task(&task_setup_data
);
5199 return PTR_ERR(task
);
5202 status
= nfs4_wait_for_completion_rpc_task(task
);
5205 status
= data
->rpc_status
;
5207 nfs_post_op_update_inode_force_wcc(inode
, &data
->fattr
);
5209 nfs_refresh_inode(inode
, &data
->fattr
);
5215 int nfs4_proc_delegreturn(struct inode
*inode
, struct rpc_cred
*cred
, const nfs4_stateid
*stateid
, int issync
)
5217 struct nfs_server
*server
= NFS_SERVER(inode
);
5218 struct nfs4_exception exception
= { };
5221 err
= _nfs4_proc_delegreturn(inode
, cred
, stateid
, issync
);
5222 trace_nfs4_delegreturn(inode
, err
);
5224 case -NFS4ERR_STALE_STATEID
:
5225 case -NFS4ERR_EXPIRED
:
5229 err
= nfs4_handle_exception(server
, err
, &exception
);
5230 } while (exception
.retry
);
5234 #define NFS4_LOCK_MINTIMEOUT (1 * HZ)
5235 #define NFS4_LOCK_MAXTIMEOUT (30 * HZ)
5238 * sleep, with exponential backoff, and retry the LOCK operation.
5240 static unsigned long
5241 nfs4_set_lock_task_retry(unsigned long timeout
)
5243 freezable_schedule_timeout_killable_unsafe(timeout
);
5245 if (timeout
> NFS4_LOCK_MAXTIMEOUT
)
5246 return NFS4_LOCK_MAXTIMEOUT
;
5250 static int _nfs4_proc_getlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
5252 struct inode
*inode
= state
->inode
;
5253 struct nfs_server
*server
= NFS_SERVER(inode
);
5254 struct nfs_client
*clp
= server
->nfs_client
;
5255 struct nfs_lockt_args arg
= {
5256 .fh
= NFS_FH(inode
),
5259 struct nfs_lockt_res res
= {
5262 struct rpc_message msg
= {
5263 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOCKT
],
5266 .rpc_cred
= state
->owner
->so_cred
,
5268 struct nfs4_lock_state
*lsp
;
5271 arg
.lock_owner
.clientid
= clp
->cl_clientid
;
5272 status
= nfs4_set_lock_state(state
, request
);
5275 lsp
= request
->fl_u
.nfs4_fl
.owner
;
5276 arg
.lock_owner
.id
= lsp
->ls_seqid
.owner_id
;
5277 arg
.lock_owner
.s_dev
= server
->s_dev
;
5278 status
= nfs4_call_sync(server
->client
, server
, &msg
, &arg
.seq_args
, &res
.seq_res
, 1);
5281 request
->fl_type
= F_UNLCK
;
5283 case -NFS4ERR_DENIED
:
5286 request
->fl_ops
->fl_release_private(request
);
5287 request
->fl_ops
= NULL
;
5292 static int nfs4_proc_getlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
5294 struct nfs4_exception exception
= { };
5298 err
= _nfs4_proc_getlk(state
, cmd
, request
);
5299 trace_nfs4_get_lock(request
, state
, cmd
, err
);
5300 err
= nfs4_handle_exception(NFS_SERVER(state
->inode
), err
,
5302 } while (exception
.retry
);
5306 static int do_vfs_lock(struct file
*file
, struct file_lock
*fl
)
5309 switch (fl
->fl_flags
& (FL_POSIX
|FL_FLOCK
)) {
5311 res
= posix_lock_file_wait(file
, fl
);
5314 res
= flock_lock_file_wait(file
, fl
);
5322 struct nfs4_unlockdata
{
5323 struct nfs_locku_args arg
;
5324 struct nfs_locku_res res
;
5325 struct nfs4_lock_state
*lsp
;
5326 struct nfs_open_context
*ctx
;
5327 struct file_lock fl
;
5328 const struct nfs_server
*server
;
5329 unsigned long timestamp
;
5332 static struct nfs4_unlockdata
*nfs4_alloc_unlockdata(struct file_lock
*fl
,
5333 struct nfs_open_context
*ctx
,
5334 struct nfs4_lock_state
*lsp
,
5335 struct nfs_seqid
*seqid
)
5337 struct nfs4_unlockdata
*p
;
5338 struct inode
*inode
= lsp
->ls_state
->inode
;
5340 p
= kzalloc(sizeof(*p
), GFP_NOFS
);
5343 p
->arg
.fh
= NFS_FH(inode
);
5345 p
->arg
.seqid
= seqid
;
5346 p
->res
.seqid
= seqid
;
5347 p
->arg
.stateid
= &lsp
->ls_stateid
;
5349 atomic_inc(&lsp
->ls_count
);
5350 /* Ensure we don't close file until we're done freeing locks! */
5351 p
->ctx
= get_nfs_open_context(ctx
);
5352 memcpy(&p
->fl
, fl
, sizeof(p
->fl
));
5353 p
->server
= NFS_SERVER(inode
);
5357 static void nfs4_locku_release_calldata(void *data
)
5359 struct nfs4_unlockdata
*calldata
= data
;
5360 nfs_free_seqid(calldata
->arg
.seqid
);
5361 nfs4_put_lock_state(calldata
->lsp
);
5362 put_nfs_open_context(calldata
->ctx
);
5366 static void nfs4_locku_done(struct rpc_task
*task
, void *data
)
5368 struct nfs4_unlockdata
*calldata
= data
;
5370 if (!nfs4_sequence_done(task
, &calldata
->res
.seq_res
))
5372 switch (task
->tk_status
) {
5374 nfs4_stateid_copy(&calldata
->lsp
->ls_stateid
,
5375 &calldata
->res
.stateid
);
5376 renew_lease(calldata
->server
, calldata
->timestamp
);
5378 case -NFS4ERR_BAD_STATEID
:
5379 case -NFS4ERR_OLD_STATEID
:
5380 case -NFS4ERR_STALE_STATEID
:
5381 case -NFS4ERR_EXPIRED
:
5384 if (nfs4_async_handle_error(task
, calldata
->server
,
5385 NULL
, NULL
) == -EAGAIN
)
5386 rpc_restart_call_prepare(task
);
5388 nfs_release_seqid(calldata
->arg
.seqid
);
5391 static void nfs4_locku_prepare(struct rpc_task
*task
, void *data
)
5393 struct nfs4_unlockdata
*calldata
= data
;
5395 if (nfs_wait_on_sequence(calldata
->arg
.seqid
, task
) != 0)
5397 if (test_bit(NFS_LOCK_INITIALIZED
, &calldata
->lsp
->ls_flags
) == 0) {
5398 /* Note: exit _without_ running nfs4_locku_done */
5401 calldata
->timestamp
= jiffies
;
5402 if (nfs4_setup_sequence(calldata
->server
,
5403 &calldata
->arg
.seq_args
,
5404 &calldata
->res
.seq_res
,
5406 nfs_release_seqid(calldata
->arg
.seqid
);
5409 task
->tk_action
= NULL
;
5411 nfs4_sequence_done(task
, &calldata
->res
.seq_res
);
5414 static const struct rpc_call_ops nfs4_locku_ops
= {
5415 .rpc_call_prepare
= nfs4_locku_prepare
,
5416 .rpc_call_done
= nfs4_locku_done
,
5417 .rpc_release
= nfs4_locku_release_calldata
,
5420 static struct rpc_task
*nfs4_do_unlck(struct file_lock
*fl
,
5421 struct nfs_open_context
*ctx
,
5422 struct nfs4_lock_state
*lsp
,
5423 struct nfs_seqid
*seqid
)
5425 struct nfs4_unlockdata
*data
;
5426 struct rpc_message msg
= {
5427 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOCKU
],
5428 .rpc_cred
= ctx
->cred
,
5430 struct rpc_task_setup task_setup_data
= {
5431 .rpc_client
= NFS_CLIENT(lsp
->ls_state
->inode
),
5432 .rpc_message
= &msg
,
5433 .callback_ops
= &nfs4_locku_ops
,
5434 .workqueue
= nfsiod_workqueue
,
5435 .flags
= RPC_TASK_ASYNC
,
5438 nfs4_state_protect(NFS_SERVER(lsp
->ls_state
->inode
)->nfs_client
,
5439 NFS_SP4_MACH_CRED_CLEANUP
, &task_setup_data
.rpc_client
, &msg
);
5441 /* Ensure this is an unlock - when canceling a lock, the
5442 * canceled lock is passed in, and it won't be an unlock.
5444 fl
->fl_type
= F_UNLCK
;
5446 data
= nfs4_alloc_unlockdata(fl
, ctx
, lsp
, seqid
);
5448 nfs_free_seqid(seqid
);
5449 return ERR_PTR(-ENOMEM
);
5452 nfs4_init_sequence(&data
->arg
.seq_args
, &data
->res
.seq_res
, 1);
5453 msg
.rpc_argp
= &data
->arg
;
5454 msg
.rpc_resp
= &data
->res
;
5455 task_setup_data
.callback_data
= data
;
5456 return rpc_run_task(&task_setup_data
);
5459 static int nfs4_proc_unlck(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
5461 struct inode
*inode
= state
->inode
;
5462 struct nfs4_state_owner
*sp
= state
->owner
;
5463 struct nfs_inode
*nfsi
= NFS_I(inode
);
5464 struct nfs_seqid
*seqid
;
5465 struct nfs4_lock_state
*lsp
;
5466 struct rpc_task
*task
;
5468 unsigned char fl_flags
= request
->fl_flags
;
5470 status
= nfs4_set_lock_state(state
, request
);
5471 /* Unlock _before_ we do the RPC call */
5472 request
->fl_flags
|= FL_EXISTS
;
5473 /* Exclude nfs_delegation_claim_locks() */
5474 mutex_lock(&sp
->so_delegreturn_mutex
);
5475 /* Exclude nfs4_reclaim_open_stateid() - note nesting! */
5476 down_read(&nfsi
->rwsem
);
5477 if (do_vfs_lock(request
->fl_file
, request
) == -ENOENT
) {
5478 up_read(&nfsi
->rwsem
);
5479 mutex_unlock(&sp
->so_delegreturn_mutex
);
5482 up_read(&nfsi
->rwsem
);
5483 mutex_unlock(&sp
->so_delegreturn_mutex
);
5486 /* Is this a delegated lock? */
5487 lsp
= request
->fl_u
.nfs4_fl
.owner
;
5488 if (test_bit(NFS_LOCK_INITIALIZED
, &lsp
->ls_flags
) == 0)
5490 seqid
= nfs_alloc_seqid(&lsp
->ls_seqid
, GFP_KERNEL
);
5494 task
= nfs4_do_unlck(request
, nfs_file_open_context(request
->fl_file
), lsp
, seqid
);
5495 status
= PTR_ERR(task
);
5498 status
= nfs4_wait_for_completion_rpc_task(task
);
5501 request
->fl_flags
= fl_flags
;
5502 trace_nfs4_unlock(request
, state
, F_SETLK
, status
);
5506 struct nfs4_lockdata
{
5507 struct nfs_lock_args arg
;
5508 struct nfs_lock_res res
;
5509 struct nfs4_lock_state
*lsp
;
5510 struct nfs_open_context
*ctx
;
5511 struct file_lock fl
;
5512 unsigned long timestamp
;
5515 struct nfs_server
*server
;
5518 static struct nfs4_lockdata
*nfs4_alloc_lockdata(struct file_lock
*fl
,
5519 struct nfs_open_context
*ctx
, struct nfs4_lock_state
*lsp
,
5522 struct nfs4_lockdata
*p
;
5523 struct inode
*inode
= lsp
->ls_state
->inode
;
5524 struct nfs_server
*server
= NFS_SERVER(inode
);
5526 p
= kzalloc(sizeof(*p
), gfp_mask
);
5530 p
->arg
.fh
= NFS_FH(inode
);
5532 p
->arg
.open_seqid
= nfs_alloc_seqid(&lsp
->ls_state
->owner
->so_seqid
, gfp_mask
);
5533 if (p
->arg
.open_seqid
== NULL
)
5535 p
->arg
.lock_seqid
= nfs_alloc_seqid(&lsp
->ls_seqid
, gfp_mask
);
5536 if (p
->arg
.lock_seqid
== NULL
)
5537 goto out_free_seqid
;
5538 p
->arg
.lock_stateid
= &lsp
->ls_stateid
;
5539 p
->arg
.lock_owner
.clientid
= server
->nfs_client
->cl_clientid
;
5540 p
->arg
.lock_owner
.id
= lsp
->ls_seqid
.owner_id
;
5541 p
->arg
.lock_owner
.s_dev
= server
->s_dev
;
5542 p
->res
.lock_seqid
= p
->arg
.lock_seqid
;
5545 atomic_inc(&lsp
->ls_count
);
5546 p
->ctx
= get_nfs_open_context(ctx
);
5547 memcpy(&p
->fl
, fl
, sizeof(p
->fl
));
5550 nfs_free_seqid(p
->arg
.open_seqid
);
5556 static void nfs4_lock_prepare(struct rpc_task
*task
, void *calldata
)
5558 struct nfs4_lockdata
*data
= calldata
;
5559 struct nfs4_state
*state
= data
->lsp
->ls_state
;
5561 dprintk("%s: begin!\n", __func__
);
5562 if (nfs_wait_on_sequence(data
->arg
.lock_seqid
, task
) != 0)
5564 /* Do we need to do an open_to_lock_owner? */
5565 if (!(data
->arg
.lock_seqid
->sequence
->flags
& NFS_SEQID_CONFIRMED
)) {
5566 if (nfs_wait_on_sequence(data
->arg
.open_seqid
, task
) != 0) {
5567 goto out_release_lock_seqid
;
5569 data
->arg
.open_stateid
= &state
->open_stateid
;
5570 data
->arg
.new_lock_owner
= 1;
5571 data
->res
.open_seqid
= data
->arg
.open_seqid
;
5573 data
->arg
.new_lock_owner
= 0;
5574 if (!nfs4_valid_open_stateid(state
)) {
5575 data
->rpc_status
= -EBADF
;
5576 task
->tk_action
= NULL
;
5577 goto out_release_open_seqid
;
5579 data
->timestamp
= jiffies
;
5580 if (nfs4_setup_sequence(data
->server
,
5581 &data
->arg
.seq_args
,
5585 out_release_open_seqid
:
5586 nfs_release_seqid(data
->arg
.open_seqid
);
5587 out_release_lock_seqid
:
5588 nfs_release_seqid(data
->arg
.lock_seqid
);
5590 nfs4_sequence_done(task
, &data
->res
.seq_res
);
5591 dprintk("%s: done!, ret = %d\n", __func__
, data
->rpc_status
);
5594 static void nfs4_lock_done(struct rpc_task
*task
, void *calldata
)
5596 struct nfs4_lockdata
*data
= calldata
;
5598 dprintk("%s: begin!\n", __func__
);
5600 if (!nfs4_sequence_done(task
, &data
->res
.seq_res
))
5603 data
->rpc_status
= task
->tk_status
;
5604 if (data
->arg
.new_lock_owner
!= 0) {
5605 if (data
->rpc_status
== 0)
5606 nfs_confirm_seqid(&data
->lsp
->ls_seqid
, 0);
5610 if (data
->rpc_status
== 0) {
5611 nfs4_stateid_copy(&data
->lsp
->ls_stateid
, &data
->res
.stateid
);
5612 set_bit(NFS_LOCK_INITIALIZED
, &data
->lsp
->ls_flags
);
5613 renew_lease(NFS_SERVER(data
->ctx
->dentry
->d_inode
), data
->timestamp
);
5616 dprintk("%s: done, ret = %d!\n", __func__
, data
->rpc_status
);
5619 static void nfs4_lock_release(void *calldata
)
5621 struct nfs4_lockdata
*data
= calldata
;
5623 dprintk("%s: begin!\n", __func__
);
5624 nfs_free_seqid(data
->arg
.open_seqid
);
5625 if (data
->cancelled
!= 0) {
5626 struct rpc_task
*task
;
5627 task
= nfs4_do_unlck(&data
->fl
, data
->ctx
, data
->lsp
,
5628 data
->arg
.lock_seqid
);
5630 rpc_put_task_async(task
);
5631 dprintk("%s: cancelling lock!\n", __func__
);
5633 nfs_free_seqid(data
->arg
.lock_seqid
);
5634 nfs4_put_lock_state(data
->lsp
);
5635 put_nfs_open_context(data
->ctx
);
5637 dprintk("%s: done!\n", __func__
);
5640 static const struct rpc_call_ops nfs4_lock_ops
= {
5641 .rpc_call_prepare
= nfs4_lock_prepare
,
5642 .rpc_call_done
= nfs4_lock_done
,
5643 .rpc_release
= nfs4_lock_release
,
5646 static void nfs4_handle_setlk_error(struct nfs_server
*server
, struct nfs4_lock_state
*lsp
, int new_lock_owner
, int error
)
5649 case -NFS4ERR_ADMIN_REVOKED
:
5650 case -NFS4ERR_BAD_STATEID
:
5651 lsp
->ls_seqid
.flags
&= ~NFS_SEQID_CONFIRMED
;
5652 if (new_lock_owner
!= 0 ||
5653 test_bit(NFS_LOCK_INITIALIZED
, &lsp
->ls_flags
) != 0)
5654 nfs4_schedule_stateid_recovery(server
, lsp
->ls_state
);
5656 case -NFS4ERR_STALE_STATEID
:
5657 lsp
->ls_seqid
.flags
&= ~NFS_SEQID_CONFIRMED
;
5658 case -NFS4ERR_EXPIRED
:
5659 nfs4_schedule_lease_recovery(server
->nfs_client
);
5663 static int _nfs4_do_setlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*fl
, int recovery_type
)
5665 struct nfs4_lockdata
*data
;
5666 struct rpc_task
*task
;
5667 struct rpc_message msg
= {
5668 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOCK
],
5669 .rpc_cred
= state
->owner
->so_cred
,
5671 struct rpc_task_setup task_setup_data
= {
5672 .rpc_client
= NFS_CLIENT(state
->inode
),
5673 .rpc_message
= &msg
,
5674 .callback_ops
= &nfs4_lock_ops
,
5675 .workqueue
= nfsiod_workqueue
,
5676 .flags
= RPC_TASK_ASYNC
,
5680 dprintk("%s: begin!\n", __func__
);
5681 data
= nfs4_alloc_lockdata(fl
, nfs_file_open_context(fl
->fl_file
),
5682 fl
->fl_u
.nfs4_fl
.owner
,
5683 recovery_type
== NFS_LOCK_NEW
? GFP_KERNEL
: GFP_NOFS
);
5687 data
->arg
.block
= 1;
5688 nfs4_init_sequence(&data
->arg
.seq_args
, &data
->res
.seq_res
, 1);
5689 msg
.rpc_argp
= &data
->arg
;
5690 msg
.rpc_resp
= &data
->res
;
5691 task_setup_data
.callback_data
= data
;
5692 if (recovery_type
> NFS_LOCK_NEW
) {
5693 if (recovery_type
== NFS_LOCK_RECLAIM
)
5694 data
->arg
.reclaim
= NFS_LOCK_RECLAIM
;
5695 nfs4_set_sequence_privileged(&data
->arg
.seq_args
);
5697 task
= rpc_run_task(&task_setup_data
);
5699 return PTR_ERR(task
);
5700 ret
= nfs4_wait_for_completion_rpc_task(task
);
5702 ret
= data
->rpc_status
;
5704 nfs4_handle_setlk_error(data
->server
, data
->lsp
,
5705 data
->arg
.new_lock_owner
, ret
);
5707 data
->cancelled
= 1;
5709 dprintk("%s: done, ret = %d!\n", __func__
, ret
);
5713 static int nfs4_lock_reclaim(struct nfs4_state
*state
, struct file_lock
*request
)
5715 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
5716 struct nfs4_exception exception
= {
5717 .inode
= state
->inode
,
5722 /* Cache the lock if possible... */
5723 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) != 0)
5725 err
= _nfs4_do_setlk(state
, F_SETLK
, request
, NFS_LOCK_RECLAIM
);
5726 trace_nfs4_lock_reclaim(request
, state
, F_SETLK
, err
);
5727 if (err
!= -NFS4ERR_DELAY
)
5729 nfs4_handle_exception(server
, err
, &exception
);
5730 } while (exception
.retry
);
5734 static int nfs4_lock_expired(struct nfs4_state
*state
, struct file_lock
*request
)
5736 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
5737 struct nfs4_exception exception
= {
5738 .inode
= state
->inode
,
5742 err
= nfs4_set_lock_state(state
, request
);
5745 if (!recover_lost_locks
) {
5746 set_bit(NFS_LOCK_LOST
, &request
->fl_u
.nfs4_fl
.owner
->ls_flags
);
5750 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) != 0)
5752 err
= _nfs4_do_setlk(state
, F_SETLK
, request
, NFS_LOCK_EXPIRED
);
5753 trace_nfs4_lock_expired(request
, state
, F_SETLK
, err
);
5757 case -NFS4ERR_GRACE
:
5758 case -NFS4ERR_DELAY
:
5759 nfs4_handle_exception(server
, err
, &exception
);
5762 } while (exception
.retry
);
5767 #if defined(CONFIG_NFS_V4_1)
5769 * nfs41_check_expired_locks - possibly free a lock stateid
5771 * @state: NFSv4 state for an inode
5773 * Returns NFS_OK if recovery for this stateid is now finished.
5774 * Otherwise a negative NFS4ERR value is returned.
5776 static int nfs41_check_expired_locks(struct nfs4_state
*state
)
5778 int status
, ret
= -NFS4ERR_BAD_STATEID
;
5779 struct nfs4_lock_state
*lsp
;
5780 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
5782 list_for_each_entry(lsp
, &state
->lock_states
, ls_locks
) {
5783 if (test_bit(NFS_LOCK_INITIALIZED
, &lsp
->ls_flags
)) {
5784 struct rpc_cred
*cred
= lsp
->ls_state
->owner
->so_cred
;
5786 status
= nfs41_test_stateid(server
,
5789 trace_nfs4_test_lock_stateid(state
, lsp
, status
);
5790 if (status
!= NFS_OK
) {
5791 /* Free the stateid unless the server
5792 * informs us the stateid is unrecognized. */
5793 if (status
!= -NFS4ERR_BAD_STATEID
)
5794 nfs41_free_stateid(server
,
5797 clear_bit(NFS_LOCK_INITIALIZED
, &lsp
->ls_flags
);
5806 static int nfs41_lock_expired(struct nfs4_state
*state
, struct file_lock
*request
)
5808 int status
= NFS_OK
;
5810 if (test_bit(LK_STATE_IN_USE
, &state
->flags
))
5811 status
= nfs41_check_expired_locks(state
);
5812 if (status
!= NFS_OK
)
5813 status
= nfs4_lock_expired(state
, request
);
5818 static int _nfs4_proc_setlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
5820 struct nfs4_state_owner
*sp
= state
->owner
;
5821 struct nfs_inode
*nfsi
= NFS_I(state
->inode
);
5822 unsigned char fl_flags
= request
->fl_flags
;
5824 int status
= -ENOLCK
;
5826 if ((fl_flags
& FL_POSIX
) &&
5827 !test_bit(NFS_STATE_POSIX_LOCKS
, &state
->flags
))
5829 /* Is this a delegated open? */
5830 status
= nfs4_set_lock_state(state
, request
);
5833 request
->fl_flags
|= FL_ACCESS
;
5834 status
= do_vfs_lock(request
->fl_file
, request
);
5837 down_read(&nfsi
->rwsem
);
5838 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
)) {
5839 /* Yes: cache locks! */
5840 /* ...but avoid races with delegation recall... */
5841 request
->fl_flags
= fl_flags
& ~FL_SLEEP
;
5842 status
= do_vfs_lock(request
->fl_file
, request
);
5845 seq
= raw_seqcount_begin(&sp
->so_reclaim_seqcount
);
5846 up_read(&nfsi
->rwsem
);
5847 status
= _nfs4_do_setlk(state
, cmd
, request
, NFS_LOCK_NEW
);
5850 down_read(&nfsi
->rwsem
);
5851 if (read_seqcount_retry(&sp
->so_reclaim_seqcount
, seq
)) {
5852 status
= -NFS4ERR_DELAY
;
5855 /* Note: we always want to sleep here! */
5856 request
->fl_flags
= fl_flags
| FL_SLEEP
;
5857 if (do_vfs_lock(request
->fl_file
, request
) < 0)
5858 printk(KERN_WARNING
"NFS: %s: VFS is out of sync with lock "
5859 "manager!\n", __func__
);
5861 up_read(&nfsi
->rwsem
);
5863 request
->fl_flags
= fl_flags
;
5867 static int nfs4_proc_setlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
5869 struct nfs4_exception exception
= {
5871 .inode
= state
->inode
,
5876 err
= _nfs4_proc_setlk(state
, cmd
, request
);
5877 trace_nfs4_set_lock(request
, state
, cmd
, err
);
5878 if (err
== -NFS4ERR_DENIED
)
5880 err
= nfs4_handle_exception(NFS_SERVER(state
->inode
),
5882 } while (exception
.retry
);
5887 nfs4_proc_lock(struct file
*filp
, int cmd
, struct file_lock
*request
)
5889 struct nfs_open_context
*ctx
;
5890 struct nfs4_state
*state
;
5891 unsigned long timeout
= NFS4_LOCK_MINTIMEOUT
;
5894 /* verify open state */
5895 ctx
= nfs_file_open_context(filp
);
5898 if (request
->fl_start
< 0 || request
->fl_end
< 0)
5901 if (IS_GETLK(cmd
)) {
5903 return nfs4_proc_getlk(state
, F_GETLK
, request
);
5907 if (!(IS_SETLK(cmd
) || IS_SETLKW(cmd
)))
5910 if (request
->fl_type
== F_UNLCK
) {
5912 return nfs4_proc_unlck(state
, cmd
, request
);
5919 * Don't rely on the VFS having checked the file open mode,
5920 * since it won't do this for flock() locks.
5922 switch (request
->fl_type
) {
5924 if (!(filp
->f_mode
& FMODE_READ
))
5928 if (!(filp
->f_mode
& FMODE_WRITE
))
5933 status
= nfs4_proc_setlk(state
, cmd
, request
);
5934 if ((status
!= -EAGAIN
) || IS_SETLK(cmd
))
5936 timeout
= nfs4_set_lock_task_retry(timeout
);
5937 status
= -ERESTARTSYS
;
5940 } while(status
< 0);
5944 int nfs4_lock_delegation_recall(struct file_lock
*fl
, struct nfs4_state
*state
, const nfs4_stateid
*stateid
)
5946 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
5949 err
= nfs4_set_lock_state(state
, fl
);
5952 err
= _nfs4_do_setlk(state
, F_SETLK
, fl
, NFS_LOCK_NEW
);
5953 return nfs4_handle_delegation_recall_error(server
, state
, stateid
, err
);
5956 struct nfs_release_lockowner_data
{
5957 struct nfs4_lock_state
*lsp
;
5958 struct nfs_server
*server
;
5959 struct nfs_release_lockowner_args args
;
5960 struct nfs_release_lockowner_res res
;
5961 unsigned long timestamp
;
5964 static void nfs4_release_lockowner_prepare(struct rpc_task
*task
, void *calldata
)
5966 struct nfs_release_lockowner_data
*data
= calldata
;
5967 struct nfs_server
*server
= data
->server
;
5968 nfs40_setup_sequence(server
, &data
->args
.seq_args
,
5969 &data
->res
.seq_res
, task
);
5970 data
->args
.lock_owner
.clientid
= server
->nfs_client
->cl_clientid
;
5971 data
->timestamp
= jiffies
;
5974 static void nfs4_release_lockowner_done(struct rpc_task
*task
, void *calldata
)
5976 struct nfs_release_lockowner_data
*data
= calldata
;
5977 struct nfs_server
*server
= data
->server
;
5979 nfs40_sequence_done(task
, &data
->res
.seq_res
);
5981 switch (task
->tk_status
) {
5983 renew_lease(server
, data
->timestamp
);
5985 case -NFS4ERR_STALE_CLIENTID
:
5986 case -NFS4ERR_EXPIRED
:
5987 nfs4_schedule_lease_recovery(server
->nfs_client
);
5989 case -NFS4ERR_LEASE_MOVED
:
5990 case -NFS4ERR_DELAY
:
5991 if (nfs4_async_handle_error(task
, server
,
5992 NULL
, NULL
) == -EAGAIN
)
5993 rpc_restart_call_prepare(task
);
5997 static void nfs4_release_lockowner_release(void *calldata
)
5999 struct nfs_release_lockowner_data
*data
= calldata
;
6000 nfs4_free_lock_state(data
->server
, data
->lsp
);
6004 static const struct rpc_call_ops nfs4_release_lockowner_ops
= {
6005 .rpc_call_prepare
= nfs4_release_lockowner_prepare
,
6006 .rpc_call_done
= nfs4_release_lockowner_done
,
6007 .rpc_release
= nfs4_release_lockowner_release
,
6011 nfs4_release_lockowner(struct nfs_server
*server
, struct nfs4_lock_state
*lsp
)
6013 struct nfs_release_lockowner_data
*data
;
6014 struct rpc_message msg
= {
6015 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RELEASE_LOCKOWNER
],
6018 if (server
->nfs_client
->cl_mvops
->minor_version
!= 0)
6021 data
= kmalloc(sizeof(*data
), GFP_NOFS
);
6025 data
->server
= server
;
6026 data
->args
.lock_owner
.clientid
= server
->nfs_client
->cl_clientid
;
6027 data
->args
.lock_owner
.id
= lsp
->ls_seqid
.owner_id
;
6028 data
->args
.lock_owner
.s_dev
= server
->s_dev
;
6030 msg
.rpc_argp
= &data
->args
;
6031 msg
.rpc_resp
= &data
->res
;
6032 nfs4_init_sequence(&data
->args
.seq_args
, &data
->res
.seq_res
, 0);
6033 rpc_call_async(server
->client
, &msg
, 0, &nfs4_release_lockowner_ops
, data
);
6036 #define XATTR_NAME_NFSV4_ACL "system.nfs4_acl"
6038 static int nfs4_xattr_set_nfs4_acl(struct dentry
*dentry
, const char *key
,
6039 const void *buf
, size_t buflen
,
6040 int flags
, int type
)
6042 if (strcmp(key
, "") != 0)
6045 return nfs4_proc_set_acl(dentry
->d_inode
, buf
, buflen
);
6048 static int nfs4_xattr_get_nfs4_acl(struct dentry
*dentry
, const char *key
,
6049 void *buf
, size_t buflen
, int type
)
6051 if (strcmp(key
, "") != 0)
6054 return nfs4_proc_get_acl(dentry
->d_inode
, buf
, buflen
);
6057 static size_t nfs4_xattr_list_nfs4_acl(struct dentry
*dentry
, char *list
,
6058 size_t list_len
, const char *name
,
6059 size_t name_len
, int type
)
6061 size_t len
= sizeof(XATTR_NAME_NFSV4_ACL
);
6063 if (!nfs4_server_supports_acls(NFS_SERVER(dentry
->d_inode
)))
6066 if (list
&& len
<= list_len
)
6067 memcpy(list
, XATTR_NAME_NFSV4_ACL
, len
);
6071 #ifdef CONFIG_NFS_V4_SECURITY_LABEL
6072 static inline int nfs4_server_supports_labels(struct nfs_server
*server
)
6074 return server
->caps
& NFS_CAP_SECURITY_LABEL
;
6077 static int nfs4_xattr_set_nfs4_label(struct dentry
*dentry
, const char *key
,
6078 const void *buf
, size_t buflen
,
6079 int flags
, int type
)
6081 if (security_ismaclabel(key
))
6082 return nfs4_set_security_label(dentry
, buf
, buflen
);
6087 static int nfs4_xattr_get_nfs4_label(struct dentry
*dentry
, const char *key
,
6088 void *buf
, size_t buflen
, int type
)
6090 if (security_ismaclabel(key
))
6091 return nfs4_get_security_label(dentry
->d_inode
, buf
, buflen
);
6095 static size_t nfs4_xattr_list_nfs4_label(struct dentry
*dentry
, char *list
,
6096 size_t list_len
, const char *name
,
6097 size_t name_len
, int type
)
6101 if (nfs_server_capable(dentry
->d_inode
, NFS_CAP_SECURITY_LABEL
)) {
6102 len
= security_inode_listsecurity(dentry
->d_inode
, NULL
, 0);
6103 if (list
&& len
<= list_len
)
6104 security_inode_listsecurity(dentry
->d_inode
, list
, len
);
6109 static const struct xattr_handler nfs4_xattr_nfs4_label_handler
= {
6110 .prefix
= XATTR_SECURITY_PREFIX
,
6111 .list
= nfs4_xattr_list_nfs4_label
,
6112 .get
= nfs4_xattr_get_nfs4_label
,
6113 .set
= nfs4_xattr_set_nfs4_label
,
6119 * nfs_fhget will use either the mounted_on_fileid or the fileid
6121 static void nfs_fixup_referral_attributes(struct nfs_fattr
*fattr
)
6123 if (!(((fattr
->valid
& NFS_ATTR_FATTR_MOUNTED_ON_FILEID
) ||
6124 (fattr
->valid
& NFS_ATTR_FATTR_FILEID
)) &&
6125 (fattr
->valid
& NFS_ATTR_FATTR_FSID
) &&
6126 (fattr
->valid
& NFS_ATTR_FATTR_V4_LOCATIONS
)))
6129 fattr
->valid
|= NFS_ATTR_FATTR_TYPE
| NFS_ATTR_FATTR_MODE
|
6130 NFS_ATTR_FATTR_NLINK
| NFS_ATTR_FATTR_V4_REFERRAL
;
6131 fattr
->mode
= S_IFDIR
| S_IRUGO
| S_IXUGO
;
6135 static int _nfs4_proc_fs_locations(struct rpc_clnt
*client
, struct inode
*dir
,
6136 const struct qstr
*name
,
6137 struct nfs4_fs_locations
*fs_locations
,
6140 struct nfs_server
*server
= NFS_SERVER(dir
);
6142 [0] = FATTR4_WORD0_FSID
| FATTR4_WORD0_FS_LOCATIONS
,
6144 struct nfs4_fs_locations_arg args
= {
6145 .dir_fh
= NFS_FH(dir
),
6150 struct nfs4_fs_locations_res res
= {
6151 .fs_locations
= fs_locations
,
6153 struct rpc_message msg
= {
6154 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_FS_LOCATIONS
],
6160 dprintk("%s: start\n", __func__
);
6162 /* Ask for the fileid of the absent filesystem if mounted_on_fileid
6163 * is not supported */
6164 if (NFS_SERVER(dir
)->attr_bitmask
[1] & FATTR4_WORD1_MOUNTED_ON_FILEID
)
6165 bitmask
[1] |= FATTR4_WORD1_MOUNTED_ON_FILEID
;
6167 bitmask
[0] |= FATTR4_WORD0_FILEID
;
6169 nfs_fattr_init(&fs_locations
->fattr
);
6170 fs_locations
->server
= server
;
6171 fs_locations
->nlocations
= 0;
6172 status
= nfs4_call_sync(client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
6173 dprintk("%s: returned status = %d\n", __func__
, status
);
6177 int nfs4_proc_fs_locations(struct rpc_clnt
*client
, struct inode
*dir
,
6178 const struct qstr
*name
,
6179 struct nfs4_fs_locations
*fs_locations
,
6182 struct nfs4_exception exception
= { };
6185 err
= _nfs4_proc_fs_locations(client
, dir
, name
,
6186 fs_locations
, page
);
6187 trace_nfs4_get_fs_locations(dir
, name
, err
);
6188 err
= nfs4_handle_exception(NFS_SERVER(dir
), err
,
6190 } while (exception
.retry
);
6195 * This operation also signals the server that this client is
6196 * performing migration recovery. The server can stop returning
6197 * NFS4ERR_LEASE_MOVED to this client. A RENEW operation is
6198 * appended to this compound to identify the client ID which is
6199 * performing recovery.
6201 static int _nfs40_proc_get_locations(struct inode
*inode
,
6202 struct nfs4_fs_locations
*locations
,
6203 struct page
*page
, struct rpc_cred
*cred
)
6205 struct nfs_server
*server
= NFS_SERVER(inode
);
6206 struct rpc_clnt
*clnt
= server
->client
;
6208 [0] = FATTR4_WORD0_FSID
| FATTR4_WORD0_FS_LOCATIONS
,
6210 struct nfs4_fs_locations_arg args
= {
6211 .clientid
= server
->nfs_client
->cl_clientid
,
6212 .fh
= NFS_FH(inode
),
6215 .migration
= 1, /* skip LOOKUP */
6216 .renew
= 1, /* append RENEW */
6218 struct nfs4_fs_locations_res res
= {
6219 .fs_locations
= locations
,
6223 struct rpc_message msg
= {
6224 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_FS_LOCATIONS
],
6229 unsigned long now
= jiffies
;
6232 nfs_fattr_init(&locations
->fattr
);
6233 locations
->server
= server
;
6234 locations
->nlocations
= 0;
6236 nfs4_init_sequence(&args
.seq_args
, &res
.seq_res
, 0);
6237 nfs4_set_sequence_privileged(&args
.seq_args
);
6238 status
= nfs4_call_sync_sequence(clnt
, server
, &msg
,
6239 &args
.seq_args
, &res
.seq_res
);
6243 renew_lease(server
, now
);
6247 #ifdef CONFIG_NFS_V4_1
6250 * This operation also signals the server that this client is
6251 * performing migration recovery. The server can stop asserting
6252 * SEQ4_STATUS_LEASE_MOVED for this client. The client ID
6253 * performing this operation is identified in the SEQUENCE
6254 * operation in this compound.
6256 * When the client supports GETATTR(fs_locations_info), it can
6257 * be plumbed in here.
6259 static int _nfs41_proc_get_locations(struct inode
*inode
,
6260 struct nfs4_fs_locations
*locations
,
6261 struct page
*page
, struct rpc_cred
*cred
)
6263 struct nfs_server
*server
= NFS_SERVER(inode
);
6264 struct rpc_clnt
*clnt
= server
->client
;
6266 [0] = FATTR4_WORD0_FSID
| FATTR4_WORD0_FS_LOCATIONS
,
6268 struct nfs4_fs_locations_arg args
= {
6269 .fh
= NFS_FH(inode
),
6272 .migration
= 1, /* skip LOOKUP */
6274 struct nfs4_fs_locations_res res
= {
6275 .fs_locations
= locations
,
6278 struct rpc_message msg
= {
6279 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_FS_LOCATIONS
],
6286 nfs_fattr_init(&locations
->fattr
);
6287 locations
->server
= server
;
6288 locations
->nlocations
= 0;
6290 nfs4_init_sequence(&args
.seq_args
, &res
.seq_res
, 0);
6291 nfs4_set_sequence_privileged(&args
.seq_args
);
6292 status
= nfs4_call_sync_sequence(clnt
, server
, &msg
,
6293 &args
.seq_args
, &res
.seq_res
);
6294 if (status
== NFS4_OK
&&
6295 res
.seq_res
.sr_status_flags
& SEQ4_STATUS_LEASE_MOVED
)
6296 status
= -NFS4ERR_LEASE_MOVED
;
6300 #endif /* CONFIG_NFS_V4_1 */
6303 * nfs4_proc_get_locations - discover locations for a migrated FSID
6304 * @inode: inode on FSID that is migrating
6305 * @locations: result of query
6307 * @cred: credential to use for this operation
6309 * Returns NFS4_OK on success, a negative NFS4ERR status code if the
6310 * operation failed, or a negative errno if a local error occurred.
6312 * On success, "locations" is filled in, but if the server has
6313 * no locations information, NFS_ATTR_FATTR_V4_LOCATIONS is not
6316 * -NFS4ERR_LEASE_MOVED is returned if the server still has leases
6317 * from this client that require migration recovery.
6319 int nfs4_proc_get_locations(struct inode
*inode
,
6320 struct nfs4_fs_locations
*locations
,
6321 struct page
*page
, struct rpc_cred
*cred
)
6323 struct nfs_server
*server
= NFS_SERVER(inode
);
6324 struct nfs_client
*clp
= server
->nfs_client
;
6325 const struct nfs4_mig_recovery_ops
*ops
=
6326 clp
->cl_mvops
->mig_recovery_ops
;
6327 struct nfs4_exception exception
= { };
6330 dprintk("%s: FSID %llx:%llx on \"%s\"\n", __func__
,
6331 (unsigned long long)server
->fsid
.major
,
6332 (unsigned long long)server
->fsid
.minor
,
6334 nfs_display_fhandle(NFS_FH(inode
), __func__
);
6337 status
= ops
->get_locations(inode
, locations
, page
, cred
);
6338 if (status
!= -NFS4ERR_DELAY
)
6340 nfs4_handle_exception(server
, status
, &exception
);
6341 } while (exception
.retry
);
6346 * This operation also signals the server that this client is
6347 * performing "lease moved" recovery. The server can stop
6348 * returning NFS4ERR_LEASE_MOVED to this client. A RENEW operation
6349 * is appended to this compound to identify the client ID which is
6350 * performing recovery.
6352 static int _nfs40_proc_fsid_present(struct inode
*inode
, struct rpc_cred
*cred
)
6354 struct nfs_server
*server
= NFS_SERVER(inode
);
6355 struct nfs_client
*clp
= NFS_SERVER(inode
)->nfs_client
;
6356 struct rpc_clnt
*clnt
= server
->client
;
6357 struct nfs4_fsid_present_arg args
= {
6358 .fh
= NFS_FH(inode
),
6359 .clientid
= clp
->cl_clientid
,
6360 .renew
= 1, /* append RENEW */
6362 struct nfs4_fsid_present_res res
= {
6365 struct rpc_message msg
= {
6366 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_FSID_PRESENT
],
6371 unsigned long now
= jiffies
;
6374 res
.fh
= nfs_alloc_fhandle();
6378 nfs4_init_sequence(&args
.seq_args
, &res
.seq_res
, 0);
6379 nfs4_set_sequence_privileged(&args
.seq_args
);
6380 status
= nfs4_call_sync_sequence(clnt
, server
, &msg
,
6381 &args
.seq_args
, &res
.seq_res
);
6382 nfs_free_fhandle(res
.fh
);
6386 do_renew_lease(clp
, now
);
6390 #ifdef CONFIG_NFS_V4_1
6393 * This operation also signals the server that this client is
6394 * performing "lease moved" recovery. The server can stop asserting
6395 * SEQ4_STATUS_LEASE_MOVED for this client. The client ID performing
6396 * this operation is identified in the SEQUENCE operation in this
6399 static int _nfs41_proc_fsid_present(struct inode
*inode
, struct rpc_cred
*cred
)
6401 struct nfs_server
*server
= NFS_SERVER(inode
);
6402 struct rpc_clnt
*clnt
= server
->client
;
6403 struct nfs4_fsid_present_arg args
= {
6404 .fh
= NFS_FH(inode
),
6406 struct nfs4_fsid_present_res res
= {
6408 struct rpc_message msg
= {
6409 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_FSID_PRESENT
],
6416 res
.fh
= nfs_alloc_fhandle();
6420 nfs4_init_sequence(&args
.seq_args
, &res
.seq_res
, 0);
6421 nfs4_set_sequence_privileged(&args
.seq_args
);
6422 status
= nfs4_call_sync_sequence(clnt
, server
, &msg
,
6423 &args
.seq_args
, &res
.seq_res
);
6424 nfs_free_fhandle(res
.fh
);
6425 if (status
== NFS4_OK
&&
6426 res
.seq_res
.sr_status_flags
& SEQ4_STATUS_LEASE_MOVED
)
6427 status
= -NFS4ERR_LEASE_MOVED
;
6431 #endif /* CONFIG_NFS_V4_1 */
6434 * nfs4_proc_fsid_present - Is this FSID present or absent on server?
6435 * @inode: inode on FSID to check
6436 * @cred: credential to use for this operation
6438 * Server indicates whether the FSID is present, moved, or not
6439 * recognized. This operation is necessary to clear a LEASE_MOVED
6440 * condition for this client ID.
6442 * Returns NFS4_OK if the FSID is present on this server,
6443 * -NFS4ERR_MOVED if the FSID is no longer present, a negative
6444 * NFS4ERR code if some error occurred on the server, or a
6445 * negative errno if a local failure occurred.
6447 int nfs4_proc_fsid_present(struct inode
*inode
, struct rpc_cred
*cred
)
6449 struct nfs_server
*server
= NFS_SERVER(inode
);
6450 struct nfs_client
*clp
= server
->nfs_client
;
6451 const struct nfs4_mig_recovery_ops
*ops
=
6452 clp
->cl_mvops
->mig_recovery_ops
;
6453 struct nfs4_exception exception
= { };
6456 dprintk("%s: FSID %llx:%llx on \"%s\"\n", __func__
,
6457 (unsigned long long)server
->fsid
.major
,
6458 (unsigned long long)server
->fsid
.minor
,
6460 nfs_display_fhandle(NFS_FH(inode
), __func__
);
6463 status
= ops
->fsid_present(inode
, cred
);
6464 if (status
!= -NFS4ERR_DELAY
)
6466 nfs4_handle_exception(server
, status
, &exception
);
6467 } while (exception
.retry
);
6472 * If 'use_integrity' is true and the state managment nfs_client
6473 * cl_rpcclient is using krb5i/p, use the integrity protected cl_rpcclient
6474 * and the machine credential as per RFC3530bis and RFC5661 Security
6475 * Considerations sections. Otherwise, just use the user cred with the
6476 * filesystem's rpc_client.
6478 static int _nfs4_proc_secinfo(struct inode
*dir
, const struct qstr
*name
, struct nfs4_secinfo_flavors
*flavors
, bool use_integrity
)
6481 struct nfs4_secinfo_arg args
= {
6482 .dir_fh
= NFS_FH(dir
),
6485 struct nfs4_secinfo_res res
= {
6488 struct rpc_message msg
= {
6489 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SECINFO
],
6493 struct rpc_clnt
*clnt
= NFS_SERVER(dir
)->client
;
6494 struct rpc_cred
*cred
= NULL
;
6496 if (use_integrity
) {
6497 clnt
= NFS_SERVER(dir
)->nfs_client
->cl_rpcclient
;
6498 cred
= nfs4_get_clid_cred(NFS_SERVER(dir
)->nfs_client
);
6499 msg
.rpc_cred
= cred
;
6502 dprintk("NFS call secinfo %s\n", name
->name
);
6504 nfs4_state_protect(NFS_SERVER(dir
)->nfs_client
,
6505 NFS_SP4_MACH_CRED_SECINFO
, &clnt
, &msg
);
6507 status
= nfs4_call_sync(clnt
, NFS_SERVER(dir
), &msg
, &args
.seq_args
,
6509 dprintk("NFS reply secinfo: %d\n", status
);
6517 int nfs4_proc_secinfo(struct inode
*dir
, const struct qstr
*name
,
6518 struct nfs4_secinfo_flavors
*flavors
)
6520 struct nfs4_exception exception
= { };
6523 err
= -NFS4ERR_WRONGSEC
;
6525 /* try to use integrity protection with machine cred */
6526 if (_nfs4_is_integrity_protected(NFS_SERVER(dir
)->nfs_client
))
6527 err
= _nfs4_proc_secinfo(dir
, name
, flavors
, true);
6530 * if unable to use integrity protection, or SECINFO with
6531 * integrity protection returns NFS4ERR_WRONGSEC (which is
6532 * disallowed by spec, but exists in deployed servers) use
6533 * the current filesystem's rpc_client and the user cred.
6535 if (err
== -NFS4ERR_WRONGSEC
)
6536 err
= _nfs4_proc_secinfo(dir
, name
, flavors
, false);
6538 trace_nfs4_secinfo(dir
, name
, err
);
6539 err
= nfs4_handle_exception(NFS_SERVER(dir
), err
,
6541 } while (exception
.retry
);
6545 #ifdef CONFIG_NFS_V4_1
6547 * Check the exchange flags returned by the server for invalid flags, having
6548 * both PNFS and NON_PNFS flags set, and not having one of NON_PNFS, PNFS, or
6551 static int nfs4_check_cl_exchange_flags(u32 flags
)
6553 if (flags
& ~EXCHGID4_FLAG_MASK_R
)
6555 if ((flags
& EXCHGID4_FLAG_USE_PNFS_MDS
) &&
6556 (flags
& EXCHGID4_FLAG_USE_NON_PNFS
))
6558 if (!(flags
& (EXCHGID4_FLAG_MASK_PNFS
)))
6562 return -NFS4ERR_INVAL
;
6566 nfs41_same_server_scope(struct nfs41_server_scope
*a
,
6567 struct nfs41_server_scope
*b
)
6569 if (a
->server_scope_sz
== b
->server_scope_sz
&&
6570 memcmp(a
->server_scope
, b
->server_scope
, a
->server_scope_sz
) == 0)
6577 * nfs4_proc_bind_conn_to_session()
6579 * The 4.1 client currently uses the same TCP connection for the
6580 * fore and backchannel.
6582 int nfs4_proc_bind_conn_to_session(struct nfs_client
*clp
, struct rpc_cred
*cred
)
6585 struct nfs41_bind_conn_to_session_res res
;
6586 struct rpc_message msg
= {
6588 &nfs4_procedures
[NFSPROC4_CLNT_BIND_CONN_TO_SESSION
],
6594 dprintk("--> %s\n", __func__
);
6596 res
.session
= kzalloc(sizeof(struct nfs4_session
), GFP_NOFS
);
6597 if (unlikely(res
.session
== NULL
)) {
6602 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
6603 trace_nfs4_bind_conn_to_session(clp
, status
);
6605 if (memcmp(res
.session
->sess_id
.data
,
6606 clp
->cl_session
->sess_id
.data
, NFS4_MAX_SESSIONID_LEN
)) {
6607 dprintk("NFS: %s: Session ID mismatch\n", __func__
);
6611 if (res
.dir
!= NFS4_CDFS4_BOTH
) {
6612 dprintk("NFS: %s: Unexpected direction from server\n",
6617 if (res
.use_conn_in_rdma_mode
) {
6618 dprintk("NFS: %s: Server returned RDMA mode = true\n",
6627 dprintk("<-- %s status= %d\n", __func__
, status
);
6632 * Minimum set of SP4_MACH_CRED operations from RFC 5661 in the enforce map
6633 * and operations we'd like to see to enable certain features in the allow map
6635 static const struct nfs41_state_protection nfs4_sp4_mach_cred_request
= {
6636 .how
= SP4_MACH_CRED
,
6637 .enforce
.u
.words
= {
6638 [1] = 1 << (OP_BIND_CONN_TO_SESSION
- 32) |
6639 1 << (OP_EXCHANGE_ID
- 32) |
6640 1 << (OP_CREATE_SESSION
- 32) |
6641 1 << (OP_DESTROY_SESSION
- 32) |
6642 1 << (OP_DESTROY_CLIENTID
- 32)
6645 [0] = 1 << (OP_CLOSE
) |
6648 [1] = 1 << (OP_SECINFO
- 32) |
6649 1 << (OP_SECINFO_NO_NAME
- 32) |
6650 1 << (OP_TEST_STATEID
- 32) |
6651 1 << (OP_FREE_STATEID
- 32) |
6652 1 << (OP_WRITE
- 32)
6657 * Select the state protection mode for client `clp' given the server results
6658 * from exchange_id in `sp'.
6660 * Returns 0 on success, negative errno otherwise.
6662 static int nfs4_sp4_select_mode(struct nfs_client
*clp
,
6663 struct nfs41_state_protection
*sp
)
6665 static const u32 supported_enforce
[NFS4_OP_MAP_NUM_WORDS
] = {
6666 [1] = 1 << (OP_BIND_CONN_TO_SESSION
- 32) |
6667 1 << (OP_EXCHANGE_ID
- 32) |
6668 1 << (OP_CREATE_SESSION
- 32) |
6669 1 << (OP_DESTROY_SESSION
- 32) |
6670 1 << (OP_DESTROY_CLIENTID
- 32)
6674 if (sp
->how
== SP4_MACH_CRED
) {
6675 /* Print state protect result */
6676 dfprintk(MOUNT
, "Server SP4_MACH_CRED support:\n");
6677 for (i
= 0; i
<= LAST_NFS4_OP
; i
++) {
6678 if (test_bit(i
, sp
->enforce
.u
.longs
))
6679 dfprintk(MOUNT
, " enforce op %d\n", i
);
6680 if (test_bit(i
, sp
->allow
.u
.longs
))
6681 dfprintk(MOUNT
, " allow op %d\n", i
);
6684 /* make sure nothing is on enforce list that isn't supported */
6685 for (i
= 0; i
< NFS4_OP_MAP_NUM_WORDS
; i
++) {
6686 if (sp
->enforce
.u
.words
[i
] & ~supported_enforce
[i
]) {
6687 dfprintk(MOUNT
, "sp4_mach_cred: disabled\n");
6693 * Minimal mode - state operations are allowed to use machine
6694 * credential. Note this already happens by default, so the
6695 * client doesn't have to do anything more than the negotiation.
6697 * NOTE: we don't care if EXCHANGE_ID is in the list -
6698 * we're already using the machine cred for exchange_id
6699 * and will never use a different cred.
6701 if (test_bit(OP_BIND_CONN_TO_SESSION
, sp
->enforce
.u
.longs
) &&
6702 test_bit(OP_CREATE_SESSION
, sp
->enforce
.u
.longs
) &&
6703 test_bit(OP_DESTROY_SESSION
, sp
->enforce
.u
.longs
) &&
6704 test_bit(OP_DESTROY_CLIENTID
, sp
->enforce
.u
.longs
)) {
6705 dfprintk(MOUNT
, "sp4_mach_cred:\n");
6706 dfprintk(MOUNT
, " minimal mode enabled\n");
6707 set_bit(NFS_SP4_MACH_CRED_MINIMAL
, &clp
->cl_sp4_flags
);
6709 dfprintk(MOUNT
, "sp4_mach_cred: disabled\n");
6713 if (test_bit(OP_CLOSE
, sp
->allow
.u
.longs
) &&
6714 test_bit(OP_LOCKU
, sp
->allow
.u
.longs
)) {
6715 dfprintk(MOUNT
, " cleanup mode enabled\n");
6716 set_bit(NFS_SP4_MACH_CRED_CLEANUP
, &clp
->cl_sp4_flags
);
6719 if (test_bit(OP_SECINFO
, sp
->allow
.u
.longs
) &&
6720 test_bit(OP_SECINFO_NO_NAME
, sp
->allow
.u
.longs
)) {
6721 dfprintk(MOUNT
, " secinfo mode enabled\n");
6722 set_bit(NFS_SP4_MACH_CRED_SECINFO
, &clp
->cl_sp4_flags
);
6725 if (test_bit(OP_TEST_STATEID
, sp
->allow
.u
.longs
) &&
6726 test_bit(OP_FREE_STATEID
, sp
->allow
.u
.longs
)) {
6727 dfprintk(MOUNT
, " stateid mode enabled\n");
6728 set_bit(NFS_SP4_MACH_CRED_STATEID
, &clp
->cl_sp4_flags
);
6731 if (test_bit(OP_WRITE
, sp
->allow
.u
.longs
)) {
6732 dfprintk(MOUNT
, " write mode enabled\n");
6733 set_bit(NFS_SP4_MACH_CRED_WRITE
, &clp
->cl_sp4_flags
);
6736 if (test_bit(OP_COMMIT
, sp
->allow
.u
.longs
)) {
6737 dfprintk(MOUNT
, " commit mode enabled\n");
6738 set_bit(NFS_SP4_MACH_CRED_COMMIT
, &clp
->cl_sp4_flags
);
6746 * _nfs4_proc_exchange_id()
6748 * Wrapper for EXCHANGE_ID operation.
6750 static int _nfs4_proc_exchange_id(struct nfs_client
*clp
, struct rpc_cred
*cred
,
6753 nfs4_verifier verifier
;
6754 struct nfs41_exchange_id_args args
= {
6755 .verifier
= &verifier
,
6757 #ifdef CONFIG_NFS_V4_1_MIGRATION
6758 .flags
= EXCHGID4_FLAG_SUPP_MOVED_REFER
|
6759 EXCHGID4_FLAG_BIND_PRINC_STATEID
|
6760 EXCHGID4_FLAG_SUPP_MOVED_MIGR
,
6762 .flags
= EXCHGID4_FLAG_SUPP_MOVED_REFER
|
6763 EXCHGID4_FLAG_BIND_PRINC_STATEID
,
6766 struct nfs41_exchange_id_res res
= {
6770 struct rpc_message msg
= {
6771 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_EXCHANGE_ID
],
6777 nfs4_init_boot_verifier(clp
, &verifier
);
6778 args
.id_len
= nfs4_init_uniform_client_string(clp
, args
.id
,
6780 dprintk("NFS call exchange_id auth=%s, '%.*s'\n",
6781 clp
->cl_rpcclient
->cl_auth
->au_ops
->au_name
,
6782 args
.id_len
, args
.id
);
6784 res
.server_owner
= kzalloc(sizeof(struct nfs41_server_owner
),
6786 if (unlikely(res
.server_owner
== NULL
)) {
6791 res
.server_scope
= kzalloc(sizeof(struct nfs41_server_scope
),
6793 if (unlikely(res
.server_scope
== NULL
)) {
6795 goto out_server_owner
;
6798 res
.impl_id
= kzalloc(sizeof(struct nfs41_impl_id
), GFP_NOFS
);
6799 if (unlikely(res
.impl_id
== NULL
)) {
6801 goto out_server_scope
;
6806 args
.state_protect
.how
= SP4_NONE
;
6810 args
.state_protect
= nfs4_sp4_mach_cred_request
;
6817 goto out_server_scope
;
6820 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
6821 trace_nfs4_exchange_id(clp
, status
);
6823 status
= nfs4_check_cl_exchange_flags(res
.flags
);
6826 status
= nfs4_sp4_select_mode(clp
, &res
.state_protect
);
6829 clp
->cl_clientid
= res
.clientid
;
6830 clp
->cl_exchange_flags
= (res
.flags
& ~EXCHGID4_FLAG_CONFIRMED_R
);
6831 if (!(res
.flags
& EXCHGID4_FLAG_CONFIRMED_R
))
6832 clp
->cl_seqid
= res
.seqid
;
6834 kfree(clp
->cl_serverowner
);
6835 clp
->cl_serverowner
= res
.server_owner
;
6836 res
.server_owner
= NULL
;
6838 /* use the most recent implementation id */
6839 kfree(clp
->cl_implid
);
6840 clp
->cl_implid
= res
.impl_id
;
6842 if (clp
->cl_serverscope
!= NULL
&&
6843 !nfs41_same_server_scope(clp
->cl_serverscope
,
6844 res
.server_scope
)) {
6845 dprintk("%s: server_scope mismatch detected\n",
6847 set_bit(NFS4CLNT_SERVER_SCOPE_MISMATCH
, &clp
->cl_state
);
6848 kfree(clp
->cl_serverscope
);
6849 clp
->cl_serverscope
= NULL
;
6852 if (clp
->cl_serverscope
== NULL
) {
6853 clp
->cl_serverscope
= res
.server_scope
;
6860 kfree(res
.server_owner
);
6862 kfree(res
.server_scope
);
6864 if (clp
->cl_implid
!= NULL
)
6865 dprintk("NFS reply exchange_id: Server Implementation ID: "
6866 "domain: %s, name: %s, date: %llu,%u\n",
6867 clp
->cl_implid
->domain
, clp
->cl_implid
->name
,
6868 clp
->cl_implid
->date
.seconds
,
6869 clp
->cl_implid
->date
.nseconds
);
6870 dprintk("NFS reply exchange_id: %d\n", status
);
6875 * nfs4_proc_exchange_id()
6877 * Returns zero, a negative errno, or a negative NFS4ERR status code.
6879 * Since the clientid has expired, all compounds using sessions
6880 * associated with the stale clientid will be returning
6881 * NFS4ERR_BADSESSION in the sequence operation, and will therefore
6882 * be in some phase of session reset.
6884 * Will attempt to negotiate SP4_MACH_CRED if krb5i / krb5p auth is used.
6886 int nfs4_proc_exchange_id(struct nfs_client
*clp
, struct rpc_cred
*cred
)
6888 rpc_authflavor_t authflavor
= clp
->cl_rpcclient
->cl_auth
->au_flavor
;
6891 /* try SP4_MACH_CRED if krb5i/p */
6892 if (authflavor
== RPC_AUTH_GSS_KRB5I
||
6893 authflavor
== RPC_AUTH_GSS_KRB5P
) {
6894 status
= _nfs4_proc_exchange_id(clp
, cred
, SP4_MACH_CRED
);
6900 return _nfs4_proc_exchange_id(clp
, cred
, SP4_NONE
);
6903 static int _nfs4_proc_destroy_clientid(struct nfs_client
*clp
,
6904 struct rpc_cred
*cred
)
6906 struct rpc_message msg
= {
6907 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_DESTROY_CLIENTID
],
6913 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
6914 trace_nfs4_destroy_clientid(clp
, status
);
6916 dprintk("NFS: Got error %d from the server %s on "
6917 "DESTROY_CLIENTID.", status
, clp
->cl_hostname
);
6921 static int nfs4_proc_destroy_clientid(struct nfs_client
*clp
,
6922 struct rpc_cred
*cred
)
6927 for (loop
= NFS4_MAX_LOOP_ON_RECOVER
; loop
!= 0; loop
--) {
6928 ret
= _nfs4_proc_destroy_clientid(clp
, cred
);
6930 case -NFS4ERR_DELAY
:
6931 case -NFS4ERR_CLIENTID_BUSY
:
6941 int nfs4_destroy_clientid(struct nfs_client
*clp
)
6943 struct rpc_cred
*cred
;
6946 if (clp
->cl_mvops
->minor_version
< 1)
6948 if (clp
->cl_exchange_flags
== 0)
6950 if (clp
->cl_preserve_clid
)
6952 cred
= nfs4_get_clid_cred(clp
);
6953 ret
= nfs4_proc_destroy_clientid(clp
, cred
);
6958 case -NFS4ERR_STALE_CLIENTID
:
6959 clp
->cl_exchange_flags
= 0;
6965 struct nfs4_get_lease_time_data
{
6966 struct nfs4_get_lease_time_args
*args
;
6967 struct nfs4_get_lease_time_res
*res
;
6968 struct nfs_client
*clp
;
6971 static void nfs4_get_lease_time_prepare(struct rpc_task
*task
,
6974 struct nfs4_get_lease_time_data
*data
=
6975 (struct nfs4_get_lease_time_data
*)calldata
;
6977 dprintk("--> %s\n", __func__
);
6978 /* just setup sequence, do not trigger session recovery
6979 since we're invoked within one */
6980 nfs41_setup_sequence(data
->clp
->cl_session
,
6981 &data
->args
->la_seq_args
,
6982 &data
->res
->lr_seq_res
,
6984 dprintk("<-- %s\n", __func__
);
6988 * Called from nfs4_state_manager thread for session setup, so don't recover
6989 * from sequence operation or clientid errors.
6991 static void nfs4_get_lease_time_done(struct rpc_task
*task
, void *calldata
)
6993 struct nfs4_get_lease_time_data
*data
=
6994 (struct nfs4_get_lease_time_data
*)calldata
;
6996 dprintk("--> %s\n", __func__
);
6997 if (!nfs41_sequence_done(task
, &data
->res
->lr_seq_res
))
6999 switch (task
->tk_status
) {
7000 case -NFS4ERR_DELAY
:
7001 case -NFS4ERR_GRACE
:
7002 dprintk("%s Retry: tk_status %d\n", __func__
, task
->tk_status
);
7003 rpc_delay(task
, NFS4_POLL_RETRY_MIN
);
7004 task
->tk_status
= 0;
7006 case -NFS4ERR_RETRY_UNCACHED_REP
:
7007 rpc_restart_call_prepare(task
);
7010 dprintk("<-- %s\n", __func__
);
7013 static const struct rpc_call_ops nfs4_get_lease_time_ops
= {
7014 .rpc_call_prepare
= nfs4_get_lease_time_prepare
,
7015 .rpc_call_done
= nfs4_get_lease_time_done
,
7018 int nfs4_proc_get_lease_time(struct nfs_client
*clp
, struct nfs_fsinfo
*fsinfo
)
7020 struct rpc_task
*task
;
7021 struct nfs4_get_lease_time_args args
;
7022 struct nfs4_get_lease_time_res res
= {
7023 .lr_fsinfo
= fsinfo
,
7025 struct nfs4_get_lease_time_data data
= {
7030 struct rpc_message msg
= {
7031 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GET_LEASE_TIME
],
7035 struct rpc_task_setup task_setup
= {
7036 .rpc_client
= clp
->cl_rpcclient
,
7037 .rpc_message
= &msg
,
7038 .callback_ops
= &nfs4_get_lease_time_ops
,
7039 .callback_data
= &data
,
7040 .flags
= RPC_TASK_TIMEOUT
,
7044 nfs4_init_sequence(&args
.la_seq_args
, &res
.lr_seq_res
, 0);
7045 nfs4_set_sequence_privileged(&args
.la_seq_args
);
7046 dprintk("--> %s\n", __func__
);
7047 task
= rpc_run_task(&task_setup
);
7050 status
= PTR_ERR(task
);
7052 status
= task
->tk_status
;
7055 dprintk("<-- %s return %d\n", __func__
, status
);
7061 * Initialize the values to be used by the client in CREATE_SESSION
7062 * If nfs4_init_session set the fore channel request and response sizes,
7065 * Set the back channel max_resp_sz_cached to zero to force the client to
7066 * always set csa_cachethis to FALSE because the current implementation
7067 * of the back channel DRC only supports caching the CB_SEQUENCE operation.
7069 static void nfs4_init_channel_attrs(struct nfs41_create_session_args
*args
)
7071 unsigned int max_rqst_sz
, max_resp_sz
;
7073 max_rqst_sz
= NFS_MAX_FILE_IO_SIZE
+ nfs41_maxwrite_overhead
;
7074 max_resp_sz
= NFS_MAX_FILE_IO_SIZE
+ nfs41_maxread_overhead
;
7076 /* Fore channel attributes */
7077 args
->fc_attrs
.max_rqst_sz
= max_rqst_sz
;
7078 args
->fc_attrs
.max_resp_sz
= max_resp_sz
;
7079 args
->fc_attrs
.max_ops
= NFS4_MAX_OPS
;
7080 args
->fc_attrs
.max_reqs
= max_session_slots
;
7082 dprintk("%s: Fore Channel : max_rqst_sz=%u max_resp_sz=%u "
7083 "max_ops=%u max_reqs=%u\n",
7085 args
->fc_attrs
.max_rqst_sz
, args
->fc_attrs
.max_resp_sz
,
7086 args
->fc_attrs
.max_ops
, args
->fc_attrs
.max_reqs
);
7088 /* Back channel attributes */
7089 args
->bc_attrs
.max_rqst_sz
= PAGE_SIZE
;
7090 args
->bc_attrs
.max_resp_sz
= PAGE_SIZE
;
7091 args
->bc_attrs
.max_resp_sz_cached
= 0;
7092 args
->bc_attrs
.max_ops
= NFS4_MAX_BACK_CHANNEL_OPS
;
7093 args
->bc_attrs
.max_reqs
= 1;
7095 dprintk("%s: Back Channel : max_rqst_sz=%u max_resp_sz=%u "
7096 "max_resp_sz_cached=%u max_ops=%u max_reqs=%u\n",
7098 args
->bc_attrs
.max_rqst_sz
, args
->bc_attrs
.max_resp_sz
,
7099 args
->bc_attrs
.max_resp_sz_cached
, args
->bc_attrs
.max_ops
,
7100 args
->bc_attrs
.max_reqs
);
7103 static int nfs4_verify_fore_channel_attrs(struct nfs41_create_session_args
*args
, struct nfs4_session
*session
)
7105 struct nfs4_channel_attrs
*sent
= &args
->fc_attrs
;
7106 struct nfs4_channel_attrs
*rcvd
= &session
->fc_attrs
;
7108 if (rcvd
->max_resp_sz
> sent
->max_resp_sz
)
7111 * Our requested max_ops is the minimum we need; we're not
7112 * prepared to break up compounds into smaller pieces than that.
7113 * So, no point even trying to continue if the server won't
7116 if (rcvd
->max_ops
< sent
->max_ops
)
7118 if (rcvd
->max_reqs
== 0)
7120 if (rcvd
->max_reqs
> NFS4_MAX_SLOT_TABLE
)
7121 rcvd
->max_reqs
= NFS4_MAX_SLOT_TABLE
;
7125 static int nfs4_verify_back_channel_attrs(struct nfs41_create_session_args
*args
, struct nfs4_session
*session
)
7127 struct nfs4_channel_attrs
*sent
= &args
->bc_attrs
;
7128 struct nfs4_channel_attrs
*rcvd
= &session
->bc_attrs
;
7130 if (rcvd
->max_rqst_sz
> sent
->max_rqst_sz
)
7132 if (rcvd
->max_resp_sz
< sent
->max_resp_sz
)
7134 if (rcvd
->max_resp_sz_cached
> sent
->max_resp_sz_cached
)
7136 /* These would render the backchannel useless: */
7137 if (rcvd
->max_ops
!= sent
->max_ops
)
7139 if (rcvd
->max_reqs
!= sent
->max_reqs
)
7144 static int nfs4_verify_channel_attrs(struct nfs41_create_session_args
*args
,
7145 struct nfs4_session
*session
)
7149 ret
= nfs4_verify_fore_channel_attrs(args
, session
);
7152 return nfs4_verify_back_channel_attrs(args
, session
);
7155 static int _nfs4_proc_create_session(struct nfs_client
*clp
,
7156 struct rpc_cred
*cred
)
7158 struct nfs4_session
*session
= clp
->cl_session
;
7159 struct nfs41_create_session_args args
= {
7161 .cb_program
= NFS4_CALLBACK
,
7163 struct nfs41_create_session_res res
= {
7166 struct rpc_message msg
= {
7167 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_CREATE_SESSION
],
7174 nfs4_init_channel_attrs(&args
);
7175 args
.flags
= (SESSION4_PERSIST
| SESSION4_BACK_CHAN
);
7177 status
= rpc_call_sync(session
->clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
7178 trace_nfs4_create_session(clp
, status
);
7181 /* Verify the session's negotiated channel_attrs values */
7182 status
= nfs4_verify_channel_attrs(&args
, session
);
7183 /* Increment the clientid slot sequence id */
7191 * Issues a CREATE_SESSION operation to the server.
7192 * It is the responsibility of the caller to verify the session is
7193 * expired before calling this routine.
7195 int nfs4_proc_create_session(struct nfs_client
*clp
, struct rpc_cred
*cred
)
7199 struct nfs4_session
*session
= clp
->cl_session
;
7201 dprintk("--> %s clp=%p session=%p\n", __func__
, clp
, session
);
7203 status
= _nfs4_proc_create_session(clp
, cred
);
7207 /* Init or reset the session slot tables */
7208 status
= nfs4_setup_session_slot_tables(session
);
7209 dprintk("slot table setup returned %d\n", status
);
7213 ptr
= (unsigned *)&session
->sess_id
.data
[0];
7214 dprintk("%s client>seqid %d sessionid %u:%u:%u:%u\n", __func__
,
7215 clp
->cl_seqid
, ptr
[0], ptr
[1], ptr
[2], ptr
[3]);
7217 dprintk("<-- %s\n", __func__
);
7222 * Issue the over-the-wire RPC DESTROY_SESSION.
7223 * The caller must serialize access to this routine.
7225 int nfs4_proc_destroy_session(struct nfs4_session
*session
,
7226 struct rpc_cred
*cred
)
7228 struct rpc_message msg
= {
7229 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_DESTROY_SESSION
],
7230 .rpc_argp
= session
,
7235 dprintk("--> nfs4_proc_destroy_session\n");
7237 /* session is still being setup */
7238 if (session
->clp
->cl_cons_state
!= NFS_CS_READY
)
7241 status
= rpc_call_sync(session
->clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
7242 trace_nfs4_destroy_session(session
->clp
, status
);
7245 dprintk("NFS: Got error %d from the server on DESTROY_SESSION. "
7246 "Session has been destroyed regardless...\n", status
);
7248 dprintk("<-- nfs4_proc_destroy_session\n");
7253 * Renew the cl_session lease.
7255 struct nfs4_sequence_data
{
7256 struct nfs_client
*clp
;
7257 struct nfs4_sequence_args args
;
7258 struct nfs4_sequence_res res
;
7261 static void nfs41_sequence_release(void *data
)
7263 struct nfs4_sequence_data
*calldata
= data
;
7264 struct nfs_client
*clp
= calldata
->clp
;
7266 if (atomic_read(&clp
->cl_count
) > 1)
7267 nfs4_schedule_state_renewal(clp
);
7268 nfs_put_client(clp
);
7272 static int nfs41_sequence_handle_errors(struct rpc_task
*task
, struct nfs_client
*clp
)
7274 switch(task
->tk_status
) {
7275 case -NFS4ERR_DELAY
:
7276 rpc_delay(task
, NFS4_POLL_RETRY_MAX
);
7279 nfs4_schedule_lease_recovery(clp
);
7284 static void nfs41_sequence_call_done(struct rpc_task
*task
, void *data
)
7286 struct nfs4_sequence_data
*calldata
= data
;
7287 struct nfs_client
*clp
= calldata
->clp
;
7289 if (!nfs41_sequence_done(task
, task
->tk_msg
.rpc_resp
))
7292 trace_nfs4_sequence(clp
, task
->tk_status
);
7293 if (task
->tk_status
< 0) {
7294 dprintk("%s ERROR %d\n", __func__
, task
->tk_status
);
7295 if (atomic_read(&clp
->cl_count
) == 1)
7298 if (nfs41_sequence_handle_errors(task
, clp
) == -EAGAIN
) {
7299 rpc_restart_call_prepare(task
);
7303 dprintk("%s rpc_cred %p\n", __func__
, task
->tk_msg
.rpc_cred
);
7305 dprintk("<-- %s\n", __func__
);
7308 static void nfs41_sequence_prepare(struct rpc_task
*task
, void *data
)
7310 struct nfs4_sequence_data
*calldata
= data
;
7311 struct nfs_client
*clp
= calldata
->clp
;
7312 struct nfs4_sequence_args
*args
;
7313 struct nfs4_sequence_res
*res
;
7315 args
= task
->tk_msg
.rpc_argp
;
7316 res
= task
->tk_msg
.rpc_resp
;
7318 nfs41_setup_sequence(clp
->cl_session
, args
, res
, task
);
7321 static const struct rpc_call_ops nfs41_sequence_ops
= {
7322 .rpc_call_done
= nfs41_sequence_call_done
,
7323 .rpc_call_prepare
= nfs41_sequence_prepare
,
7324 .rpc_release
= nfs41_sequence_release
,
7327 static struct rpc_task
*_nfs41_proc_sequence(struct nfs_client
*clp
,
7328 struct rpc_cred
*cred
,
7331 struct nfs4_sequence_data
*calldata
;
7332 struct rpc_message msg
= {
7333 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SEQUENCE
],
7336 struct rpc_task_setup task_setup_data
= {
7337 .rpc_client
= clp
->cl_rpcclient
,
7338 .rpc_message
= &msg
,
7339 .callback_ops
= &nfs41_sequence_ops
,
7340 .flags
= RPC_TASK_ASYNC
| RPC_TASK_TIMEOUT
,
7343 if (!atomic_inc_not_zero(&clp
->cl_count
))
7344 return ERR_PTR(-EIO
);
7345 calldata
= kzalloc(sizeof(*calldata
), GFP_NOFS
);
7346 if (calldata
== NULL
) {
7347 nfs_put_client(clp
);
7348 return ERR_PTR(-ENOMEM
);
7350 nfs4_init_sequence(&calldata
->args
, &calldata
->res
, 0);
7352 nfs4_set_sequence_privileged(&calldata
->args
);
7353 msg
.rpc_argp
= &calldata
->args
;
7354 msg
.rpc_resp
= &calldata
->res
;
7355 calldata
->clp
= clp
;
7356 task_setup_data
.callback_data
= calldata
;
7358 return rpc_run_task(&task_setup_data
);
7361 static int nfs41_proc_async_sequence(struct nfs_client
*clp
, struct rpc_cred
*cred
, unsigned renew_flags
)
7363 struct rpc_task
*task
;
7366 if ((renew_flags
& NFS4_RENEW_TIMEOUT
) == 0)
7368 task
= _nfs41_proc_sequence(clp
, cred
, false);
7370 ret
= PTR_ERR(task
);
7372 rpc_put_task_async(task
);
7373 dprintk("<-- %s status=%d\n", __func__
, ret
);
7377 static int nfs4_proc_sequence(struct nfs_client
*clp
, struct rpc_cred
*cred
)
7379 struct rpc_task
*task
;
7382 task
= _nfs41_proc_sequence(clp
, cred
, true);
7384 ret
= PTR_ERR(task
);
7387 ret
= rpc_wait_for_completion_task(task
);
7389 struct nfs4_sequence_res
*res
= task
->tk_msg
.rpc_resp
;
7391 if (task
->tk_status
== 0)
7392 nfs41_handle_sequence_flag_errors(clp
, res
->sr_status_flags
);
7393 ret
= task
->tk_status
;
7397 dprintk("<-- %s status=%d\n", __func__
, ret
);
7401 struct nfs4_reclaim_complete_data
{
7402 struct nfs_client
*clp
;
7403 struct nfs41_reclaim_complete_args arg
;
7404 struct nfs41_reclaim_complete_res res
;
7407 static void nfs4_reclaim_complete_prepare(struct rpc_task
*task
, void *data
)
7409 struct nfs4_reclaim_complete_data
*calldata
= data
;
7411 nfs41_setup_sequence(calldata
->clp
->cl_session
,
7412 &calldata
->arg
.seq_args
,
7413 &calldata
->res
.seq_res
,
7417 static int nfs41_reclaim_complete_handle_errors(struct rpc_task
*task
, struct nfs_client
*clp
)
7419 switch(task
->tk_status
) {
7421 case -NFS4ERR_COMPLETE_ALREADY
:
7422 case -NFS4ERR_WRONG_CRED
: /* What to do here? */
7424 case -NFS4ERR_DELAY
:
7425 rpc_delay(task
, NFS4_POLL_RETRY_MAX
);
7427 case -NFS4ERR_RETRY_UNCACHED_REP
:
7430 nfs4_schedule_lease_recovery(clp
);
7435 static void nfs4_reclaim_complete_done(struct rpc_task
*task
, void *data
)
7437 struct nfs4_reclaim_complete_data
*calldata
= data
;
7438 struct nfs_client
*clp
= calldata
->clp
;
7439 struct nfs4_sequence_res
*res
= &calldata
->res
.seq_res
;
7441 dprintk("--> %s\n", __func__
);
7442 if (!nfs41_sequence_done(task
, res
))
7445 trace_nfs4_reclaim_complete(clp
, task
->tk_status
);
7446 if (nfs41_reclaim_complete_handle_errors(task
, clp
) == -EAGAIN
) {
7447 rpc_restart_call_prepare(task
);
7450 dprintk("<-- %s\n", __func__
);
7453 static void nfs4_free_reclaim_complete_data(void *data
)
7455 struct nfs4_reclaim_complete_data
*calldata
= data
;
7460 static const struct rpc_call_ops nfs4_reclaim_complete_call_ops
= {
7461 .rpc_call_prepare
= nfs4_reclaim_complete_prepare
,
7462 .rpc_call_done
= nfs4_reclaim_complete_done
,
7463 .rpc_release
= nfs4_free_reclaim_complete_data
,
7467 * Issue a global reclaim complete.
7469 static int nfs41_proc_reclaim_complete(struct nfs_client
*clp
,
7470 struct rpc_cred
*cred
)
7472 struct nfs4_reclaim_complete_data
*calldata
;
7473 struct rpc_task
*task
;
7474 struct rpc_message msg
= {
7475 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RECLAIM_COMPLETE
],
7478 struct rpc_task_setup task_setup_data
= {
7479 .rpc_client
= clp
->cl_rpcclient
,
7480 .rpc_message
= &msg
,
7481 .callback_ops
= &nfs4_reclaim_complete_call_ops
,
7482 .flags
= RPC_TASK_ASYNC
,
7484 int status
= -ENOMEM
;
7486 dprintk("--> %s\n", __func__
);
7487 calldata
= kzalloc(sizeof(*calldata
), GFP_NOFS
);
7488 if (calldata
== NULL
)
7490 calldata
->clp
= clp
;
7491 calldata
->arg
.one_fs
= 0;
7493 nfs4_init_sequence(&calldata
->arg
.seq_args
, &calldata
->res
.seq_res
, 0);
7494 nfs4_set_sequence_privileged(&calldata
->arg
.seq_args
);
7495 msg
.rpc_argp
= &calldata
->arg
;
7496 msg
.rpc_resp
= &calldata
->res
;
7497 task_setup_data
.callback_data
= calldata
;
7498 task
= rpc_run_task(&task_setup_data
);
7500 status
= PTR_ERR(task
);
7503 status
= nfs4_wait_for_completion_rpc_task(task
);
7505 status
= task
->tk_status
;
7509 dprintk("<-- %s status=%d\n", __func__
, status
);
7514 nfs4_layoutget_prepare(struct rpc_task
*task
, void *calldata
)
7516 struct nfs4_layoutget
*lgp
= calldata
;
7517 struct nfs_server
*server
= NFS_SERVER(lgp
->args
.inode
);
7518 struct nfs4_session
*session
= nfs4_get_session(server
);
7520 dprintk("--> %s\n", __func__
);
7521 /* Note the is a race here, where a CB_LAYOUTRECALL can come in
7522 * right now covering the LAYOUTGET we are about to send.
7523 * However, that is not so catastrophic, and there seems
7524 * to be no way to prevent it completely.
7526 if (nfs41_setup_sequence(session
, &lgp
->args
.seq_args
,
7527 &lgp
->res
.seq_res
, task
))
7529 if (pnfs_choose_layoutget_stateid(&lgp
->args
.stateid
,
7530 NFS_I(lgp
->args
.inode
)->layout
,
7531 lgp
->args
.ctx
->state
)) {
7532 rpc_exit(task
, NFS4_OK
);
7536 static void nfs4_layoutget_done(struct rpc_task
*task
, void *calldata
)
7538 struct nfs4_layoutget
*lgp
= calldata
;
7539 struct inode
*inode
= lgp
->args
.inode
;
7540 struct nfs_server
*server
= NFS_SERVER(inode
);
7541 struct pnfs_layout_hdr
*lo
;
7542 struct nfs4_state
*state
= NULL
;
7543 unsigned long timeo
, now
, giveup
;
7545 dprintk("--> %s tk_status => %d\n", __func__
, -task
->tk_status
);
7547 if (!nfs41_sequence_done(task
, &lgp
->res
.seq_res
))
7550 switch (task
->tk_status
) {
7554 * NFS4ERR_LAYOUTTRYLATER is a conflict with another client
7555 * (or clients) writing to the same RAID stripe
7557 case -NFS4ERR_LAYOUTTRYLATER
:
7559 * NFS4ERR_RECALLCONFLICT is when conflict with self (must recall
7560 * existing layout before getting a new one).
7562 case -NFS4ERR_RECALLCONFLICT
:
7563 timeo
= rpc_get_timeout(task
->tk_client
);
7564 giveup
= lgp
->args
.timestamp
+ timeo
;
7566 if (time_after(giveup
, now
)) {
7567 unsigned long delay
;
7570 * - Not less then NFS4_POLL_RETRY_MIN.
7571 * - One last time a jiffie before we give up
7572 * - exponential backoff (time_now minus start_attempt)
7574 delay
= max_t(unsigned long, NFS4_POLL_RETRY_MIN
,
7575 min((giveup
- now
- 1),
7576 now
- lgp
->args
.timestamp
));
7578 dprintk("%s: NFS4ERR_RECALLCONFLICT waiting %lu\n",
7580 rpc_delay(task
, delay
);
7581 task
->tk_status
= 0;
7582 rpc_restart_call_prepare(task
);
7583 goto out
; /* Do not call nfs4_async_handle_error() */
7586 case -NFS4ERR_EXPIRED
:
7587 case -NFS4ERR_BAD_STATEID
:
7588 spin_lock(&inode
->i_lock
);
7589 lo
= NFS_I(inode
)->layout
;
7590 if (!lo
|| list_empty(&lo
->plh_segs
)) {
7591 spin_unlock(&inode
->i_lock
);
7592 /* If the open stateid was bad, then recover it. */
7593 state
= lgp
->args
.ctx
->state
;
7598 * Mark the bad layout state as invalid, then retry
7599 * with the current stateid.
7601 pnfs_mark_matching_lsegs_invalid(lo
, &head
, NULL
);
7602 spin_unlock(&inode
->i_lock
);
7603 pnfs_free_lseg_list(&head
);
7605 task
->tk_status
= 0;
7606 rpc_restart_call_prepare(task
);
7609 if (nfs4_async_handle_error(task
, server
, state
, NULL
) == -EAGAIN
)
7610 rpc_restart_call_prepare(task
);
7612 dprintk("<-- %s\n", __func__
);
7615 static size_t max_response_pages(struct nfs_server
*server
)
7617 u32 max_resp_sz
= server
->nfs_client
->cl_session
->fc_attrs
.max_resp_sz
;
7618 return nfs_page_array_len(0, max_resp_sz
);
7621 static void nfs4_free_pages(struct page
**pages
, size_t size
)
7628 for (i
= 0; i
< size
; i
++) {
7631 __free_page(pages
[i
]);
7636 static struct page
**nfs4_alloc_pages(size_t size
, gfp_t gfp_flags
)
7638 struct page
**pages
;
7641 pages
= kcalloc(size
, sizeof(struct page
*), gfp_flags
);
7643 dprintk("%s: can't alloc array of %zu pages\n", __func__
, size
);
7647 for (i
= 0; i
< size
; i
++) {
7648 pages
[i
] = alloc_page(gfp_flags
);
7650 dprintk("%s: failed to allocate page\n", __func__
);
7651 nfs4_free_pages(pages
, size
);
7659 static void nfs4_layoutget_release(void *calldata
)
7661 struct nfs4_layoutget
*lgp
= calldata
;
7662 struct inode
*inode
= lgp
->args
.inode
;
7663 struct nfs_server
*server
= NFS_SERVER(inode
);
7664 size_t max_pages
= max_response_pages(server
);
7666 dprintk("--> %s\n", __func__
);
7667 nfs4_free_pages(lgp
->args
.layout
.pages
, max_pages
);
7668 pnfs_put_layout_hdr(NFS_I(inode
)->layout
);
7669 put_nfs_open_context(lgp
->args
.ctx
);
7671 dprintk("<-- %s\n", __func__
);
7674 static const struct rpc_call_ops nfs4_layoutget_call_ops
= {
7675 .rpc_call_prepare
= nfs4_layoutget_prepare
,
7676 .rpc_call_done
= nfs4_layoutget_done
,
7677 .rpc_release
= nfs4_layoutget_release
,
7680 struct pnfs_layout_segment
*
7681 nfs4_proc_layoutget(struct nfs4_layoutget
*lgp
, gfp_t gfp_flags
)
7683 struct inode
*inode
= lgp
->args
.inode
;
7684 struct nfs_server
*server
= NFS_SERVER(inode
);
7685 size_t max_pages
= max_response_pages(server
);
7686 struct rpc_task
*task
;
7687 struct rpc_message msg
= {
7688 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LAYOUTGET
],
7689 .rpc_argp
= &lgp
->args
,
7690 .rpc_resp
= &lgp
->res
,
7691 .rpc_cred
= lgp
->cred
,
7693 struct rpc_task_setup task_setup_data
= {
7694 .rpc_client
= server
->client
,
7695 .rpc_message
= &msg
,
7696 .callback_ops
= &nfs4_layoutget_call_ops
,
7697 .callback_data
= lgp
,
7698 .flags
= RPC_TASK_ASYNC
,
7700 struct pnfs_layout_segment
*lseg
= NULL
;
7703 dprintk("--> %s\n", __func__
);
7705 /* nfs4_layoutget_release calls pnfs_put_layout_hdr */
7706 pnfs_get_layout_hdr(NFS_I(inode
)->layout
);
7708 lgp
->args
.layout
.pages
= nfs4_alloc_pages(max_pages
, gfp_flags
);
7709 if (!lgp
->args
.layout
.pages
) {
7710 nfs4_layoutget_release(lgp
);
7711 return ERR_PTR(-ENOMEM
);
7713 lgp
->args
.layout
.pglen
= max_pages
* PAGE_SIZE
;
7714 lgp
->args
.timestamp
= jiffies
;
7716 lgp
->res
.layoutp
= &lgp
->args
.layout
;
7717 lgp
->res
.seq_res
.sr_slot
= NULL
;
7718 nfs4_init_sequence(&lgp
->args
.seq_args
, &lgp
->res
.seq_res
, 0);
7720 task
= rpc_run_task(&task_setup_data
);
7722 return ERR_CAST(task
);
7723 status
= nfs4_wait_for_completion_rpc_task(task
);
7725 status
= task
->tk_status
;
7726 trace_nfs4_layoutget(lgp
->args
.ctx
,
7730 /* if layoutp->len is 0, nfs4_layoutget_prepare called rpc_exit */
7731 if (status
== 0 && lgp
->res
.layoutp
->len
)
7732 lseg
= pnfs_layout_process(lgp
);
7734 dprintk("<-- %s status=%d\n", __func__
, status
);
7736 return ERR_PTR(status
);
7741 nfs4_layoutreturn_prepare(struct rpc_task
*task
, void *calldata
)
7743 struct nfs4_layoutreturn
*lrp
= calldata
;
7745 dprintk("--> %s\n", __func__
);
7746 nfs41_setup_sequence(lrp
->clp
->cl_session
,
7747 &lrp
->args
.seq_args
,
7752 static void nfs4_layoutreturn_done(struct rpc_task
*task
, void *calldata
)
7754 struct nfs4_layoutreturn
*lrp
= calldata
;
7755 struct nfs_server
*server
;
7757 dprintk("--> %s\n", __func__
);
7759 if (!nfs41_sequence_done(task
, &lrp
->res
.seq_res
))
7762 server
= NFS_SERVER(lrp
->args
.inode
);
7763 switch (task
->tk_status
) {
7765 task
->tk_status
= 0;
7768 case -NFS4ERR_DELAY
:
7769 if (nfs4_async_handle_error(task
, server
, NULL
, NULL
) != -EAGAIN
)
7771 rpc_restart_call_prepare(task
);
7774 dprintk("<-- %s\n", __func__
);
7777 static void nfs4_layoutreturn_release(void *calldata
)
7779 struct nfs4_layoutreturn
*lrp
= calldata
;
7780 struct pnfs_layout_hdr
*lo
= lrp
->args
.layout
;
7782 dprintk("--> %s\n", __func__
);
7783 spin_lock(&lo
->plh_inode
->i_lock
);
7784 if (lrp
->res
.lrs_present
)
7785 pnfs_set_layout_stateid(lo
, &lrp
->res
.stateid
, true);
7786 lo
->plh_block_lgets
--;
7787 spin_unlock(&lo
->plh_inode
->i_lock
);
7788 pnfs_put_layout_hdr(lrp
->args
.layout
);
7790 dprintk("<-- %s\n", __func__
);
7793 static const struct rpc_call_ops nfs4_layoutreturn_call_ops
= {
7794 .rpc_call_prepare
= nfs4_layoutreturn_prepare
,
7795 .rpc_call_done
= nfs4_layoutreturn_done
,
7796 .rpc_release
= nfs4_layoutreturn_release
,
7799 int nfs4_proc_layoutreturn(struct nfs4_layoutreturn
*lrp
)
7801 struct rpc_task
*task
;
7802 struct rpc_message msg
= {
7803 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LAYOUTRETURN
],
7804 .rpc_argp
= &lrp
->args
,
7805 .rpc_resp
= &lrp
->res
,
7806 .rpc_cred
= lrp
->cred
,
7808 struct rpc_task_setup task_setup_data
= {
7809 .rpc_client
= NFS_SERVER(lrp
->args
.inode
)->client
,
7810 .rpc_message
= &msg
,
7811 .callback_ops
= &nfs4_layoutreturn_call_ops
,
7812 .callback_data
= lrp
,
7816 dprintk("--> %s\n", __func__
);
7817 nfs4_init_sequence(&lrp
->args
.seq_args
, &lrp
->res
.seq_res
, 1);
7818 task
= rpc_run_task(&task_setup_data
);
7820 return PTR_ERR(task
);
7821 status
= task
->tk_status
;
7822 trace_nfs4_layoutreturn(lrp
->args
.inode
, status
);
7823 dprintk("<-- %s status=%d\n", __func__
, status
);
7829 _nfs4_proc_getdeviceinfo(struct nfs_server
*server
,
7830 struct pnfs_device
*pdev
,
7831 struct rpc_cred
*cred
)
7833 struct nfs4_getdeviceinfo_args args
= {
7836 struct nfs4_getdeviceinfo_res res
= {
7839 struct rpc_message msg
= {
7840 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GETDEVICEINFO
],
7847 dprintk("--> %s\n", __func__
);
7848 status
= nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
7849 dprintk("<-- %s status=%d\n", __func__
, status
);
7854 int nfs4_proc_getdeviceinfo(struct nfs_server
*server
,
7855 struct pnfs_device
*pdev
,
7856 struct rpc_cred
*cred
)
7858 struct nfs4_exception exception
= { };
7862 err
= nfs4_handle_exception(server
,
7863 _nfs4_proc_getdeviceinfo(server
, pdev
, cred
),
7865 } while (exception
.retry
);
7868 EXPORT_SYMBOL_GPL(nfs4_proc_getdeviceinfo
);
7870 static void nfs4_layoutcommit_prepare(struct rpc_task
*task
, void *calldata
)
7872 struct nfs4_layoutcommit_data
*data
= calldata
;
7873 struct nfs_server
*server
= NFS_SERVER(data
->args
.inode
);
7874 struct nfs4_session
*session
= nfs4_get_session(server
);
7876 nfs41_setup_sequence(session
,
7877 &data
->args
.seq_args
,
7883 nfs4_layoutcommit_done(struct rpc_task
*task
, void *calldata
)
7885 struct nfs4_layoutcommit_data
*data
= calldata
;
7886 struct nfs_server
*server
= NFS_SERVER(data
->args
.inode
);
7888 if (!nfs41_sequence_done(task
, &data
->res
.seq_res
))
7891 switch (task
->tk_status
) { /* Just ignore these failures */
7892 case -NFS4ERR_DELEG_REVOKED
: /* layout was recalled */
7893 case -NFS4ERR_BADIOMODE
: /* no IOMODE_RW layout for range */
7894 case -NFS4ERR_BADLAYOUT
: /* no layout */
7895 case -NFS4ERR_GRACE
: /* loca_recalim always false */
7896 task
->tk_status
= 0;
7900 if (nfs4_async_handle_error(task
, server
, NULL
, NULL
) == -EAGAIN
) {
7901 rpc_restart_call_prepare(task
);
7907 static void nfs4_layoutcommit_release(void *calldata
)
7909 struct nfs4_layoutcommit_data
*data
= calldata
;
7911 pnfs_cleanup_layoutcommit(data
);
7912 nfs_post_op_update_inode_force_wcc(data
->args
.inode
,
7914 put_rpccred(data
->cred
);
7918 static const struct rpc_call_ops nfs4_layoutcommit_ops
= {
7919 .rpc_call_prepare
= nfs4_layoutcommit_prepare
,
7920 .rpc_call_done
= nfs4_layoutcommit_done
,
7921 .rpc_release
= nfs4_layoutcommit_release
,
7925 nfs4_proc_layoutcommit(struct nfs4_layoutcommit_data
*data
, bool sync
)
7927 struct rpc_message msg
= {
7928 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LAYOUTCOMMIT
],
7929 .rpc_argp
= &data
->args
,
7930 .rpc_resp
= &data
->res
,
7931 .rpc_cred
= data
->cred
,
7933 struct rpc_task_setup task_setup_data
= {
7934 .task
= &data
->task
,
7935 .rpc_client
= NFS_CLIENT(data
->args
.inode
),
7936 .rpc_message
= &msg
,
7937 .callback_ops
= &nfs4_layoutcommit_ops
,
7938 .callback_data
= data
,
7939 .flags
= RPC_TASK_ASYNC
,
7941 struct rpc_task
*task
;
7944 dprintk("NFS: %4d initiating layoutcommit call. sync %d "
7945 "lbw: %llu inode %lu\n",
7946 data
->task
.tk_pid
, sync
,
7947 data
->args
.lastbytewritten
,
7948 data
->args
.inode
->i_ino
);
7950 nfs4_init_sequence(&data
->args
.seq_args
, &data
->res
.seq_res
, 1);
7951 task
= rpc_run_task(&task_setup_data
);
7953 return PTR_ERR(task
);
7956 status
= nfs4_wait_for_completion_rpc_task(task
);
7959 status
= task
->tk_status
;
7960 trace_nfs4_layoutcommit(data
->args
.inode
, status
);
7962 dprintk("%s: status %d\n", __func__
, status
);
7968 * Use the state managment nfs_client cl_rpcclient, which uses krb5i (if
7969 * possible) as per RFC3530bis and RFC5661 Security Considerations sections
7972 _nfs41_proc_secinfo_no_name(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
7973 struct nfs_fsinfo
*info
,
7974 struct nfs4_secinfo_flavors
*flavors
, bool use_integrity
)
7976 struct nfs41_secinfo_no_name_args args
= {
7977 .style
= SECINFO_STYLE_CURRENT_FH
,
7979 struct nfs4_secinfo_res res
= {
7982 struct rpc_message msg
= {
7983 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SECINFO_NO_NAME
],
7987 struct rpc_clnt
*clnt
= server
->client
;
7988 struct rpc_cred
*cred
= NULL
;
7991 if (use_integrity
) {
7992 clnt
= server
->nfs_client
->cl_rpcclient
;
7993 cred
= nfs4_get_clid_cred(server
->nfs_client
);
7994 msg
.rpc_cred
= cred
;
7997 dprintk("--> %s\n", __func__
);
7998 status
= nfs4_call_sync(clnt
, server
, &msg
, &args
.seq_args
,
8000 dprintk("<-- %s status=%d\n", __func__
, status
);
8009 nfs41_proc_secinfo_no_name(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
8010 struct nfs_fsinfo
*info
, struct nfs4_secinfo_flavors
*flavors
)
8012 struct nfs4_exception exception
= { };
8015 /* first try using integrity protection */
8016 err
= -NFS4ERR_WRONGSEC
;
8018 /* try to use integrity protection with machine cred */
8019 if (_nfs4_is_integrity_protected(server
->nfs_client
))
8020 err
= _nfs41_proc_secinfo_no_name(server
, fhandle
, info
,
8024 * if unable to use integrity protection, or SECINFO with
8025 * integrity protection returns NFS4ERR_WRONGSEC (which is
8026 * disallowed by spec, but exists in deployed servers) use
8027 * the current filesystem's rpc_client and the user cred.
8029 if (err
== -NFS4ERR_WRONGSEC
)
8030 err
= _nfs41_proc_secinfo_no_name(server
, fhandle
, info
,
8035 case -NFS4ERR_WRONGSEC
:
8039 err
= nfs4_handle_exception(server
, err
, &exception
);
8041 } while (exception
.retry
);
8047 nfs41_find_root_sec(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
8048 struct nfs_fsinfo
*info
)
8052 rpc_authflavor_t flavor
= RPC_AUTH_MAXFLAVOR
;
8053 struct nfs4_secinfo_flavors
*flavors
;
8054 struct nfs4_secinfo4
*secinfo
;
8057 page
= alloc_page(GFP_KERNEL
);
8063 flavors
= page_address(page
);
8064 err
= nfs41_proc_secinfo_no_name(server
, fhandle
, info
, flavors
);
8067 * Fall back on "guess and check" method if
8068 * the server doesn't support SECINFO_NO_NAME
8070 if (err
== -NFS4ERR_WRONGSEC
|| err
== -ENOTSUPP
) {
8071 err
= nfs4_find_root_sec(server
, fhandle
, info
);
8077 for (i
= 0; i
< flavors
->num_flavors
; i
++) {
8078 secinfo
= &flavors
->flavors
[i
];
8080 switch (secinfo
->flavor
) {
8084 flavor
= rpcauth_get_pseudoflavor(secinfo
->flavor
,
8085 &secinfo
->flavor_info
);
8088 flavor
= RPC_AUTH_MAXFLAVOR
;
8092 if (!nfs_auth_info_match(&server
->auth_info
, flavor
))
8093 flavor
= RPC_AUTH_MAXFLAVOR
;
8095 if (flavor
!= RPC_AUTH_MAXFLAVOR
) {
8096 err
= nfs4_lookup_root_sec(server
, fhandle
,
8103 if (flavor
== RPC_AUTH_MAXFLAVOR
)
8114 static int _nfs41_test_stateid(struct nfs_server
*server
,
8115 nfs4_stateid
*stateid
,
8116 struct rpc_cred
*cred
)
8119 struct nfs41_test_stateid_args args
= {
8122 struct nfs41_test_stateid_res res
;
8123 struct rpc_message msg
= {
8124 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_TEST_STATEID
],
8129 struct rpc_clnt
*rpc_client
= server
->client
;
8131 nfs4_state_protect(server
->nfs_client
, NFS_SP4_MACH_CRED_STATEID
,
8134 dprintk("NFS call test_stateid %p\n", stateid
);
8135 nfs4_init_sequence(&args
.seq_args
, &res
.seq_res
, 0);
8136 nfs4_set_sequence_privileged(&args
.seq_args
);
8137 status
= nfs4_call_sync_sequence(rpc_client
, server
, &msg
,
8138 &args
.seq_args
, &res
.seq_res
);
8139 if (status
!= NFS_OK
) {
8140 dprintk("NFS reply test_stateid: failed, %d\n", status
);
8143 dprintk("NFS reply test_stateid: succeeded, %d\n", -res
.status
);
8148 * nfs41_test_stateid - perform a TEST_STATEID operation
8150 * @server: server / transport on which to perform the operation
8151 * @stateid: state ID to test
8154 * Returns NFS_OK if the server recognizes that "stateid" is valid.
8155 * Otherwise a negative NFS4ERR value is returned if the operation
8156 * failed or the state ID is not currently valid.
8158 static int nfs41_test_stateid(struct nfs_server
*server
,
8159 nfs4_stateid
*stateid
,
8160 struct rpc_cred
*cred
)
8162 struct nfs4_exception exception
= { };
8165 err
= _nfs41_test_stateid(server
, stateid
, cred
);
8166 if (err
!= -NFS4ERR_DELAY
)
8168 nfs4_handle_exception(server
, err
, &exception
);
8169 } while (exception
.retry
);
8173 struct nfs_free_stateid_data
{
8174 struct nfs_server
*server
;
8175 struct nfs41_free_stateid_args args
;
8176 struct nfs41_free_stateid_res res
;
8179 static void nfs41_free_stateid_prepare(struct rpc_task
*task
, void *calldata
)
8181 struct nfs_free_stateid_data
*data
= calldata
;
8182 nfs41_setup_sequence(nfs4_get_session(data
->server
),
8183 &data
->args
.seq_args
,
8188 static void nfs41_free_stateid_done(struct rpc_task
*task
, void *calldata
)
8190 struct nfs_free_stateid_data
*data
= calldata
;
8192 nfs41_sequence_done(task
, &data
->res
.seq_res
);
8194 switch (task
->tk_status
) {
8195 case -NFS4ERR_DELAY
:
8196 if (nfs4_async_handle_error(task
, data
->server
, NULL
, NULL
) == -EAGAIN
)
8197 rpc_restart_call_prepare(task
);
8201 static void nfs41_free_stateid_release(void *calldata
)
8206 static const struct rpc_call_ops nfs41_free_stateid_ops
= {
8207 .rpc_call_prepare
= nfs41_free_stateid_prepare
,
8208 .rpc_call_done
= nfs41_free_stateid_done
,
8209 .rpc_release
= nfs41_free_stateid_release
,
8212 static struct rpc_task
*_nfs41_free_stateid(struct nfs_server
*server
,
8213 nfs4_stateid
*stateid
,
8214 struct rpc_cred
*cred
,
8217 struct rpc_message msg
= {
8218 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_FREE_STATEID
],
8221 struct rpc_task_setup task_setup
= {
8222 .rpc_client
= server
->client
,
8223 .rpc_message
= &msg
,
8224 .callback_ops
= &nfs41_free_stateid_ops
,
8225 .flags
= RPC_TASK_ASYNC
,
8227 struct nfs_free_stateid_data
*data
;
8229 nfs4_state_protect(server
->nfs_client
, NFS_SP4_MACH_CRED_STATEID
,
8230 &task_setup
.rpc_client
, &msg
);
8232 dprintk("NFS call free_stateid %p\n", stateid
);
8233 data
= kmalloc(sizeof(*data
), GFP_NOFS
);
8235 return ERR_PTR(-ENOMEM
);
8236 data
->server
= server
;
8237 nfs4_stateid_copy(&data
->args
.stateid
, stateid
);
8239 task_setup
.callback_data
= data
;
8241 msg
.rpc_argp
= &data
->args
;
8242 msg
.rpc_resp
= &data
->res
;
8243 nfs4_init_sequence(&data
->args
.seq_args
, &data
->res
.seq_res
, 0);
8245 nfs4_set_sequence_privileged(&data
->args
.seq_args
);
8247 return rpc_run_task(&task_setup
);
8251 * nfs41_free_stateid - perform a FREE_STATEID operation
8253 * @server: server / transport on which to perform the operation
8254 * @stateid: state ID to release
8257 * Returns NFS_OK if the server freed "stateid". Otherwise a
8258 * negative NFS4ERR value is returned.
8260 static int nfs41_free_stateid(struct nfs_server
*server
,
8261 nfs4_stateid
*stateid
,
8262 struct rpc_cred
*cred
)
8264 struct rpc_task
*task
;
8267 task
= _nfs41_free_stateid(server
, stateid
, cred
, true);
8269 return PTR_ERR(task
);
8270 ret
= rpc_wait_for_completion_task(task
);
8272 ret
= task
->tk_status
;
8278 nfs41_free_lock_state(struct nfs_server
*server
, struct nfs4_lock_state
*lsp
)
8280 struct rpc_task
*task
;
8281 struct rpc_cred
*cred
= lsp
->ls_state
->owner
->so_cred
;
8283 task
= _nfs41_free_stateid(server
, &lsp
->ls_stateid
, cred
, false);
8284 nfs4_free_lock_state(server
, lsp
);
8290 static bool nfs41_match_stateid(const nfs4_stateid
*s1
,
8291 const nfs4_stateid
*s2
)
8293 if (memcmp(s1
->other
, s2
->other
, sizeof(s1
->other
)) != 0)
8296 if (s1
->seqid
== s2
->seqid
)
8298 if (s1
->seqid
== 0 || s2
->seqid
== 0)
8304 #endif /* CONFIG_NFS_V4_1 */
8306 static bool nfs4_match_stateid(const nfs4_stateid
*s1
,
8307 const nfs4_stateid
*s2
)
8309 return nfs4_stateid_match(s1
, s2
);
8313 static const struct nfs4_state_recovery_ops nfs40_reboot_recovery_ops
= {
8314 .owner_flag_bit
= NFS_OWNER_RECLAIM_REBOOT
,
8315 .state_flag_bit
= NFS_STATE_RECLAIM_REBOOT
,
8316 .recover_open
= nfs4_open_reclaim
,
8317 .recover_lock
= nfs4_lock_reclaim
,
8318 .establish_clid
= nfs4_init_clientid
,
8319 .detect_trunking
= nfs40_discover_server_trunking
,
8322 #if defined(CONFIG_NFS_V4_1)
8323 static const struct nfs4_state_recovery_ops nfs41_reboot_recovery_ops
= {
8324 .owner_flag_bit
= NFS_OWNER_RECLAIM_REBOOT
,
8325 .state_flag_bit
= NFS_STATE_RECLAIM_REBOOT
,
8326 .recover_open
= nfs4_open_reclaim
,
8327 .recover_lock
= nfs4_lock_reclaim
,
8328 .establish_clid
= nfs41_init_clientid
,
8329 .reclaim_complete
= nfs41_proc_reclaim_complete
,
8330 .detect_trunking
= nfs41_discover_server_trunking
,
8332 #endif /* CONFIG_NFS_V4_1 */
8334 static const struct nfs4_state_recovery_ops nfs40_nograce_recovery_ops
= {
8335 .owner_flag_bit
= NFS_OWNER_RECLAIM_NOGRACE
,
8336 .state_flag_bit
= NFS_STATE_RECLAIM_NOGRACE
,
8337 .recover_open
= nfs40_open_expired
,
8338 .recover_lock
= nfs4_lock_expired
,
8339 .establish_clid
= nfs4_init_clientid
,
8342 #if defined(CONFIG_NFS_V4_1)
8343 static const struct nfs4_state_recovery_ops nfs41_nograce_recovery_ops
= {
8344 .owner_flag_bit
= NFS_OWNER_RECLAIM_NOGRACE
,
8345 .state_flag_bit
= NFS_STATE_RECLAIM_NOGRACE
,
8346 .recover_open
= nfs41_open_expired
,
8347 .recover_lock
= nfs41_lock_expired
,
8348 .establish_clid
= nfs41_init_clientid
,
8350 #endif /* CONFIG_NFS_V4_1 */
8352 static const struct nfs4_state_maintenance_ops nfs40_state_renewal_ops
= {
8353 .sched_state_renewal
= nfs4_proc_async_renew
,
8354 .get_state_renewal_cred_locked
= nfs4_get_renew_cred_locked
,
8355 .renew_lease
= nfs4_proc_renew
,
8358 #if defined(CONFIG_NFS_V4_1)
8359 static const struct nfs4_state_maintenance_ops nfs41_state_renewal_ops
= {
8360 .sched_state_renewal
= nfs41_proc_async_sequence
,
8361 .get_state_renewal_cred_locked
= nfs4_get_machine_cred_locked
,
8362 .renew_lease
= nfs4_proc_sequence
,
8366 static const struct nfs4_mig_recovery_ops nfs40_mig_recovery_ops
= {
8367 .get_locations
= _nfs40_proc_get_locations
,
8368 .fsid_present
= _nfs40_proc_fsid_present
,
8371 #if defined(CONFIG_NFS_V4_1)
8372 static const struct nfs4_mig_recovery_ops nfs41_mig_recovery_ops
= {
8373 .get_locations
= _nfs41_proc_get_locations
,
8374 .fsid_present
= _nfs41_proc_fsid_present
,
8376 #endif /* CONFIG_NFS_V4_1 */
8378 static const struct nfs4_minor_version_ops nfs_v4_0_minor_ops
= {
8380 .init_caps
= NFS_CAP_READDIRPLUS
8381 | NFS_CAP_ATOMIC_OPEN
8382 | NFS_CAP_CHANGE_ATTR
8383 | NFS_CAP_POSIX_LOCK
,
8384 .init_client
= nfs40_init_client
,
8385 .shutdown_client
= nfs40_shutdown_client
,
8386 .match_stateid
= nfs4_match_stateid
,
8387 .find_root_sec
= nfs4_find_root_sec
,
8388 .free_lock_state
= nfs4_release_lockowner
,
8389 .call_sync_ops
= &nfs40_call_sync_ops
,
8390 .reboot_recovery_ops
= &nfs40_reboot_recovery_ops
,
8391 .nograce_recovery_ops
= &nfs40_nograce_recovery_ops
,
8392 .state_renewal_ops
= &nfs40_state_renewal_ops
,
8393 .mig_recovery_ops
= &nfs40_mig_recovery_ops
,
8396 #if defined(CONFIG_NFS_V4_1)
8397 static const struct nfs4_minor_version_ops nfs_v4_1_minor_ops
= {
8399 .init_caps
= NFS_CAP_READDIRPLUS
8400 | NFS_CAP_ATOMIC_OPEN
8401 | NFS_CAP_CHANGE_ATTR
8402 | NFS_CAP_POSIX_LOCK
8403 | NFS_CAP_STATEID_NFSV41
8404 | NFS_CAP_ATOMIC_OPEN_V1
,
8405 .init_client
= nfs41_init_client
,
8406 .shutdown_client
= nfs41_shutdown_client
,
8407 .match_stateid
= nfs41_match_stateid
,
8408 .find_root_sec
= nfs41_find_root_sec
,
8409 .free_lock_state
= nfs41_free_lock_state
,
8410 .call_sync_ops
= &nfs41_call_sync_ops
,
8411 .reboot_recovery_ops
= &nfs41_reboot_recovery_ops
,
8412 .nograce_recovery_ops
= &nfs41_nograce_recovery_ops
,
8413 .state_renewal_ops
= &nfs41_state_renewal_ops
,
8414 .mig_recovery_ops
= &nfs41_mig_recovery_ops
,
8418 #if defined(CONFIG_NFS_V4_2)
8419 static const struct nfs4_minor_version_ops nfs_v4_2_minor_ops
= {
8421 .init_caps
= NFS_CAP_READDIRPLUS
8422 | NFS_CAP_ATOMIC_OPEN
8423 | NFS_CAP_CHANGE_ATTR
8424 | NFS_CAP_POSIX_LOCK
8425 | NFS_CAP_STATEID_NFSV41
8426 | NFS_CAP_ATOMIC_OPEN_V1
8428 | NFS_CAP_DEALLOCATE
8430 .init_client
= nfs41_init_client
,
8431 .shutdown_client
= nfs41_shutdown_client
,
8432 .match_stateid
= nfs41_match_stateid
,
8433 .find_root_sec
= nfs41_find_root_sec
,
8434 .free_lock_state
= nfs41_free_lock_state
,
8435 .call_sync_ops
= &nfs41_call_sync_ops
,
8436 .reboot_recovery_ops
= &nfs41_reboot_recovery_ops
,
8437 .nograce_recovery_ops
= &nfs41_nograce_recovery_ops
,
8438 .state_renewal_ops
= &nfs41_state_renewal_ops
,
8442 const struct nfs4_minor_version_ops
*nfs_v4_minor_ops
[] = {
8443 [0] = &nfs_v4_0_minor_ops
,
8444 #if defined(CONFIG_NFS_V4_1)
8445 [1] = &nfs_v4_1_minor_ops
,
8447 #if defined(CONFIG_NFS_V4_2)
8448 [2] = &nfs_v4_2_minor_ops
,
8452 static const struct inode_operations nfs4_dir_inode_operations
= {
8453 .create
= nfs_create
,
8454 .lookup
= nfs_lookup
,
8455 .atomic_open
= nfs_atomic_open
,
8457 .unlink
= nfs_unlink
,
8458 .symlink
= nfs_symlink
,
8462 .rename
= nfs_rename
,
8463 .permission
= nfs_permission
,
8464 .getattr
= nfs_getattr
,
8465 .setattr
= nfs_setattr
,
8466 .getxattr
= generic_getxattr
,
8467 .setxattr
= generic_setxattr
,
8468 .listxattr
= generic_listxattr
,
8469 .removexattr
= generic_removexattr
,
8472 static const struct inode_operations nfs4_file_inode_operations
= {
8473 .permission
= nfs_permission
,
8474 .getattr
= nfs_getattr
,
8475 .setattr
= nfs_setattr
,
8476 .getxattr
= generic_getxattr
,
8477 .setxattr
= generic_setxattr
,
8478 .listxattr
= generic_listxattr
,
8479 .removexattr
= generic_removexattr
,
8482 const struct nfs_rpc_ops nfs_v4_clientops
= {
8483 .version
= 4, /* protocol version */
8484 .dentry_ops
= &nfs4_dentry_operations
,
8485 .dir_inode_ops
= &nfs4_dir_inode_operations
,
8486 .file_inode_ops
= &nfs4_file_inode_operations
,
8487 .file_ops
= &nfs4_file_operations
,
8488 .getroot
= nfs4_proc_get_root
,
8489 .submount
= nfs4_submount
,
8490 .try_mount
= nfs4_try_mount
,
8491 .getattr
= nfs4_proc_getattr
,
8492 .setattr
= nfs4_proc_setattr
,
8493 .lookup
= nfs4_proc_lookup
,
8494 .access
= nfs4_proc_access
,
8495 .readlink
= nfs4_proc_readlink
,
8496 .create
= nfs4_proc_create
,
8497 .remove
= nfs4_proc_remove
,
8498 .unlink_setup
= nfs4_proc_unlink_setup
,
8499 .unlink_rpc_prepare
= nfs4_proc_unlink_rpc_prepare
,
8500 .unlink_done
= nfs4_proc_unlink_done
,
8501 .rename_setup
= nfs4_proc_rename_setup
,
8502 .rename_rpc_prepare
= nfs4_proc_rename_rpc_prepare
,
8503 .rename_done
= nfs4_proc_rename_done
,
8504 .link
= nfs4_proc_link
,
8505 .symlink
= nfs4_proc_symlink
,
8506 .mkdir
= nfs4_proc_mkdir
,
8507 .rmdir
= nfs4_proc_remove
,
8508 .readdir
= nfs4_proc_readdir
,
8509 .mknod
= nfs4_proc_mknod
,
8510 .statfs
= nfs4_proc_statfs
,
8511 .fsinfo
= nfs4_proc_fsinfo
,
8512 .pathconf
= nfs4_proc_pathconf
,
8513 .set_capabilities
= nfs4_server_capabilities
,
8514 .decode_dirent
= nfs4_decode_dirent
,
8515 .pgio_rpc_prepare
= nfs4_proc_pgio_rpc_prepare
,
8516 .read_setup
= nfs4_proc_read_setup
,
8517 .read_done
= nfs4_read_done
,
8518 .write_setup
= nfs4_proc_write_setup
,
8519 .write_done
= nfs4_write_done
,
8520 .commit_setup
= nfs4_proc_commit_setup
,
8521 .commit_rpc_prepare
= nfs4_proc_commit_rpc_prepare
,
8522 .commit_done
= nfs4_commit_done
,
8523 .lock
= nfs4_proc_lock
,
8524 .clear_acl_cache
= nfs4_zap_acl_attr
,
8525 .close_context
= nfs4_close_context
,
8526 .open_context
= nfs4_atomic_open
,
8527 .have_delegation
= nfs4_have_delegation
,
8528 .return_delegation
= nfs4_inode_return_delegation
,
8529 .alloc_client
= nfs4_alloc_client
,
8530 .init_client
= nfs4_init_client
,
8531 .free_client
= nfs4_free_client
,
8532 .create_server
= nfs4_create_server
,
8533 .clone_server
= nfs_clone_server
,
8536 static const struct xattr_handler nfs4_xattr_nfs4_acl_handler
= {
8537 .prefix
= XATTR_NAME_NFSV4_ACL
,
8538 .list
= nfs4_xattr_list_nfs4_acl
,
8539 .get
= nfs4_xattr_get_nfs4_acl
,
8540 .set
= nfs4_xattr_set_nfs4_acl
,
8543 const struct xattr_handler
*nfs4_xattr_handlers
[] = {
8544 &nfs4_xattr_nfs4_acl_handler
,
8545 #ifdef CONFIG_NFS_V4_SECURITY_LABEL
8546 &nfs4_xattr_nfs4_label_handler
,